Commit | Line | Data |
---|---|---|
a0d0e21e LW |
1 | /* pp_hot.c |
2 | * | |
4bb101f2 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
b94e2f88 | 4 | * 2000, 2001, 2002, 2003, 2004, 2005, 2006, 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 | * | |
15 | * Awake! Awake! Fear, Fire, Foes! Awake! | |
16 | * Fire, Foes! Awake! | |
17 | */ | |
18 | ||
166f8a29 DM |
19 | /* This file contains 'hot' pp ("push/pop") functions that |
20 | * execute the opcodes that make up a perl program. A typical pp function | |
21 | * expects to find its arguments on the stack, and usually pushes its | |
22 | * results onto the stack, hence the 'pp' terminology. Each OP structure | |
23 | * contains a pointer to the relevant pp_foo() function. | |
24 | * | |
25 | * By 'hot', we mean common ops whose execution speed is critical. | |
26 | * By gathering them together into a single file, we encourage | |
27 | * CPU cache hits on hot code. Also it could be taken as a warning not to | |
28 | * change any code in this file unless you're sure it won't affect | |
29 | * performance. | |
30 | */ | |
31 | ||
a0d0e21e | 32 | #include "EXTERN.h" |
864dbfa3 | 33 | #define PERL_IN_PP_HOT_C |
a0d0e21e LW |
34 | #include "perl.h" |
35 | ||
36 | /* Hot code. */ | |
37 | ||
38 | PP(pp_const) | |
39 | { | |
97aff369 | 40 | dVAR; |
39644a26 | 41 | dSP; |
1d7c1841 | 42 | XPUSHs(cSVOP_sv); |
a0d0e21e LW |
43 | RETURN; |
44 | } | |
45 | ||
46 | PP(pp_nextstate) | |
47 | { | |
97aff369 | 48 | dVAR; |
533c011a | 49 | PL_curcop = (COP*)PL_op; |
a0d0e21e | 50 | TAINT_NOT; /* Each statement is presumed innocent */ |
3280af22 | 51 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e LW |
52 | FREETMPS; |
53 | return NORMAL; | |
54 | } | |
55 | ||
56 | PP(pp_gvsv) | |
57 | { | |
97aff369 | 58 | dVAR; |
39644a26 | 59 | dSP; |
924508f0 | 60 | EXTEND(SP,1); |
533c011a | 61 | if (PL_op->op_private & OPpLVAL_INTRO) |
1d7c1841 | 62 | PUSHs(save_scalar(cGVOP_gv)); |
a0d0e21e | 63 | else |
c69033f2 | 64 | PUSHs(GvSVn(cGVOP_gv)); |
a0d0e21e LW |
65 | RETURN; |
66 | } | |
67 | ||
68 | PP(pp_null) | |
69 | { | |
97aff369 | 70 | dVAR; |
a0d0e21e LW |
71 | return NORMAL; |
72 | } | |
73 | ||
7399586d HS |
74 | PP(pp_setstate) |
75 | { | |
97aff369 | 76 | dVAR; |
7399586d HS |
77 | PL_curcop = (COP*)PL_op; |
78 | return NORMAL; | |
79 | } | |
80 | ||
a0d0e21e LW |
81 | PP(pp_pushmark) |
82 | { | |
97aff369 | 83 | dVAR; |
3280af22 | 84 | PUSHMARK(PL_stack_sp); |
a0d0e21e LW |
85 | return NORMAL; |
86 | } | |
87 | ||
88 | PP(pp_stringify) | |
89 | { | |
97aff369 | 90 | dVAR; dSP; dTARGET; |
6050d10e | 91 | sv_copypv(TARG,TOPs); |
a0d0e21e LW |
92 | SETTARG; |
93 | RETURN; | |
94 | } | |
95 | ||
96 | PP(pp_gv) | |
97 | { | |
97aff369 | 98 | dVAR; dSP; |
1d7c1841 | 99 | XPUSHs((SV*)cGVOP_gv); |
a0d0e21e LW |
100 | RETURN; |
101 | } | |
102 | ||
103 | PP(pp_and) | |
104 | { | |
97aff369 | 105 | dVAR; dSP; |
a0d0e21e LW |
106 | if (!SvTRUE(TOPs)) |
107 | RETURN; | |
108 | else { | |
c960fc3b SP |
109 | if (PL_op->op_type == OP_AND) |
110 | --SP; | |
a0d0e21e LW |
111 | RETURNOP(cLOGOP->op_other); |
112 | } | |
113 | } | |
114 | ||
115 | PP(pp_sassign) | |
116 | { | |
97aff369 | 117 | dVAR; dSP; dPOPTOPssrl; |
748a9306 | 118 | |
533c011a | 119 | if (PL_op->op_private & OPpASSIGN_BACKWARDS) { |
0bd48802 AL |
120 | SV * const temp = left; |
121 | left = right; right = temp; | |
a0d0e21e | 122 | } |
3280af22 | 123 | if (PL_tainting && PL_tainted && !SvTAINTED(left)) |
a0d0e21e | 124 | TAINT_NOT; |
e26df76a | 125 | if (PL_op->op_private & OPpASSIGN_CV_TO_GV) { |
6136c704 | 126 | SV * const cv = SvRV(left); |
e26df76a NC |
127 | const U32 cv_type = SvTYPE(cv); |
128 | const U32 gv_type = SvTYPE(right); | |
6136c704 | 129 | const bool got_coderef = cv_type == SVt_PVCV || cv_type == SVt_PVFM; |
e26df76a NC |
130 | |
131 | if (!got_coderef) { | |
132 | assert(SvROK(cv)); | |
133 | } | |
134 | ||
135 | /* Can do the optimisation if right (LVAUE) is not a typeglob, | |
136 | left (RVALUE) is a reference to something, and we're in void | |
137 | context. */ | |
138 | if (!got_coderef && gv_type != SVt_PVGV && GIMME_V == G_VOID) { | |
139 | /* Is the target symbol table currently empty? */ | |
6136c704 | 140 | GV * const gv = gv_fetchsv(right, GV_NOINIT, SVt_PVGV); |
bb112e5a | 141 | if (SvTYPE(gv) != SVt_PVGV && !SvOK(gv)) { |
e26df76a NC |
142 | /* Good. Create a new proxy constant subroutine in the target. |
143 | The gv becomes a(nother) reference to the constant. */ | |
144 | SV *const value = SvRV(cv); | |
145 | ||
146 | SvUPGRADE((SV *)gv, SVt_RV); | |
147 | SvROK_on(gv); | |
148 | SvRV_set(gv, value); | |
b37c2d43 | 149 | SvREFCNT_inc_simple_void(value); |
e26df76a NC |
150 | SETs(right); |
151 | RETURN; | |
152 | } | |
153 | } | |
154 | ||
155 | /* Need to fix things up. */ | |
156 | if (gv_type != SVt_PVGV) { | |
157 | /* Need to fix GV. */ | |
158 | right = (SV*)gv_fetchsv(right, GV_ADD, SVt_PVGV); | |
159 | } | |
160 | ||
161 | if (!got_coderef) { | |
162 | /* We've been returned a constant rather than a full subroutine, | |
163 | but they expect a subroutine reference to apply. */ | |
164 | ENTER; | |
b37c2d43 | 165 | SvREFCNT_inc_void(SvRV(cv)); |
e26df76a NC |
166 | /* newCONSTSUB takes a reference count on the passed in SV |
167 | from us. We set the name to NULL, otherwise we get into | |
168 | all sorts of fun as the reference to our new sub is | |
169 | donated to the GV that we're about to assign to. | |
170 | */ | |
171 | SvRV_set(left, (SV *)newCONSTSUB(GvSTASH(right), NULL, | |
172 | SvRV(cv))); | |
173 | SvREFCNT_dec(cv); | |
174 | LEAVE; | |
e26df76a NC |
175 | } |
176 | ||
177 | } | |
54310121 | 178 | SvSetMagicSV(right, left); |
a0d0e21e LW |
179 | SETs(right); |
180 | RETURN; | |
181 | } | |
182 | ||
183 | PP(pp_cond_expr) | |
184 | { | |
97aff369 | 185 | dVAR; dSP; |
a0d0e21e | 186 | if (SvTRUEx(POPs)) |
1a67a97c | 187 | RETURNOP(cLOGOP->op_other); |
a0d0e21e | 188 | else |
1a67a97c | 189 | RETURNOP(cLOGOP->op_next); |
a0d0e21e LW |
190 | } |
191 | ||
192 | PP(pp_unstack) | |
193 | { | |
97aff369 | 194 | dVAR; |
a0d0e21e LW |
195 | I32 oldsave; |
196 | TAINT_NOT; /* Each statement is presumed innocent */ | |
3280af22 | 197 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e | 198 | FREETMPS; |
3280af22 | 199 | oldsave = PL_scopestack[PL_scopestack_ix - 1]; |
a0d0e21e LW |
200 | LEAVE_SCOPE(oldsave); |
201 | return NORMAL; | |
202 | } | |
203 | ||
a0d0e21e LW |
204 | PP(pp_concat) |
205 | { | |
97aff369 | 206 | dVAR; dSP; dATARGET; tryAMAGICbin(concat,opASSIGN); |
748a9306 LW |
207 | { |
208 | dPOPTOPssrl; | |
8d6d96c1 HS |
209 | bool lbyte; |
210 | STRLEN rlen; | |
d4c19fe8 | 211 | const char *rpv = NULL; |
a6b599c7 | 212 | bool rbyte = FALSE; |
a9c4fd4e | 213 | bool rcopied = FALSE; |
8d6d96c1 HS |
214 | |
215 | if (TARG == right && right != left) { | |
c75ab21a RH |
216 | /* mg_get(right) may happen here ... */ |
217 | rpv = SvPV_const(right, rlen); | |
218 | rbyte = !DO_UTF8(right); | |
8d6d96c1 | 219 | right = sv_2mortal(newSVpvn(rpv, rlen)); |
349d4f2f | 220 | rpv = SvPV_const(right, rlen); /* no point setting UTF-8 here */ |
db79b45b | 221 | rcopied = TRUE; |
8d6d96c1 | 222 | } |
7889fe52 | 223 | |
8d6d96c1 | 224 | if (TARG != left) { |
a9c4fd4e | 225 | STRLEN llen; |
5c144d81 | 226 | const char* const lpv = SvPV_const(left, llen); /* mg_get(left) may happen here */ |
90f5826e | 227 | lbyte = !DO_UTF8(left); |
8d6d96c1 HS |
228 | sv_setpvn(TARG, lpv, llen); |
229 | if (!lbyte) | |
230 | SvUTF8_on(TARG); | |
231 | else | |
232 | SvUTF8_off(TARG); | |
233 | } | |
234 | else { /* TARG == left */ | |
a9c4fd4e | 235 | STRLEN llen; |
5b295bef | 236 | SvGETMAGIC(left); /* or mg_get(left) may happen here */ |
c75ab21a RH |
237 | if (!SvOK(TARG)) { |
238 | if (left == right && ckWARN(WARN_UNINITIALIZED)) | |
239 | report_uninit(right); | |
c69006e4 | 240 | sv_setpvn(left, "", 0); |
c75ab21a | 241 | } |
10516c54 | 242 | (void)SvPV_nomg_const(left, llen); /* Needed to set UTF8 flag */ |
90f5826e TS |
243 | lbyte = !DO_UTF8(left); |
244 | if (IN_BYTES) | |
245 | SvUTF8_off(TARG); | |
8d6d96c1 | 246 | } |
a12c0f56 | 247 | |
c75ab21a RH |
248 | /* or mg_get(right) may happen here */ |
249 | if (!rcopied) { | |
250 | rpv = SvPV_const(right, rlen); | |
251 | rbyte = !DO_UTF8(right); | |
252 | } | |
8d6d96c1 HS |
253 | if (lbyte != rbyte) { |
254 | if (lbyte) | |
255 | sv_utf8_upgrade_nomg(TARG); | |
256 | else { | |
db79b45b JH |
257 | if (!rcopied) |
258 | right = sv_2mortal(newSVpvn(rpv, rlen)); | |
8d6d96c1 | 259 | sv_utf8_upgrade_nomg(right); |
349d4f2f | 260 | rpv = SvPV_const(right, rlen); |
69b47968 | 261 | } |
a0d0e21e | 262 | } |
8d6d96c1 | 263 | sv_catpvn_nomg(TARG, rpv, rlen); |
43ebc500 | 264 | |
a0d0e21e LW |
265 | SETTARG; |
266 | RETURN; | |
748a9306 | 267 | } |
a0d0e21e LW |
268 | } |
269 | ||
270 | PP(pp_padsv) | |
271 | { | |
97aff369 | 272 | dVAR; dSP; dTARGET; |
a0d0e21e | 273 | XPUSHs(TARG); |
533c011a NIS |
274 | if (PL_op->op_flags & OPf_MOD) { |
275 | if (PL_op->op_private & OPpLVAL_INTRO) | |
dd2155a4 | 276 | SAVECLEARSV(PAD_SVl(PL_op->op_targ)); |
a62b51b8 | 277 | if (PL_op->op_private & OPpDEREF) { |
8ec5e241 | 278 | PUTBACK; |
dd2155a4 | 279 | vivify_ref(PAD_SVl(PL_op->op_targ), PL_op->op_private & OPpDEREF); |
8ec5e241 NIS |
280 | SPAGAIN; |
281 | } | |
4633a7c4 | 282 | } |
a0d0e21e LW |
283 | RETURN; |
284 | } | |
285 | ||
286 | PP(pp_readline) | |
287 | { | |
97aff369 | 288 | dVAR; |
f5284f61 | 289 | tryAMAGICunTARGET(iter, 0); |
3280af22 | 290 | PL_last_in_gv = (GV*)(*PL_stack_sp--); |
8efb3254 | 291 | if (SvTYPE(PL_last_in_gv) != SVt_PVGV) { |
1c846c1f | 292 | if (SvROK(PL_last_in_gv) && SvTYPE(SvRV(PL_last_in_gv)) == SVt_PVGV) |
f5284f61 | 293 | PL_last_in_gv = (GV*)SvRV(PL_last_in_gv); |
8efb3254 | 294 | else { |
f5284f61 IZ |
295 | dSP; |
296 | XPUSHs((SV*)PL_last_in_gv); | |
297 | PUTBACK; | |
cea2e8a9 | 298 | pp_rv2gv(); |
f5284f61 | 299 | PL_last_in_gv = (GV*)(*PL_stack_sp--); |
f5284f61 IZ |
300 | } |
301 | } | |
a0d0e21e LW |
302 | return do_readline(); |
303 | } | |
304 | ||
305 | PP(pp_eq) | |
306 | { | |
97aff369 | 307 | dVAR; dSP; tryAMAGICbinSET(eq,0); |
4c9fe80f | 308 | #ifndef NV_PRESERVES_UV |
0bdaccee | 309 | if (SvROK(TOPs) && !SvAMAGIC(TOPs) && SvROK(TOPm1s) && !SvAMAGIC(TOPm1s)) { |
e61d22ef NC |
310 | SP--; |
311 | SETs(boolSV(SvRV(TOPs) == SvRV(TOPp1s))); | |
4c9fe80f AS |
312 | RETURN; |
313 | } | |
314 | #endif | |
28e5dec8 JH |
315 | #ifdef PERL_PRESERVE_IVUV |
316 | SvIV_please(TOPs); | |
317 | if (SvIOK(TOPs)) { | |
4c9fe80f AS |
318 | /* Unless the left argument is integer in range we are going |
319 | to have to use NV maths. Hence only attempt to coerce the | |
320 | right argument if we know the left is integer. */ | |
28e5dec8 JH |
321 | SvIV_please(TOPm1s); |
322 | if (SvIOK(TOPm1s)) { | |
0bd48802 AL |
323 | const bool auvok = SvUOK(TOPm1s); |
324 | const bool buvok = SvUOK(TOPs); | |
a12c0f56 | 325 | |
1605159e NC |
326 | if (auvok == buvok) { /* ## IV == IV or UV == UV ## */ |
327 | /* Casting IV to UV before comparison isn't going to matter | |
328 | on 2s complement. On 1s complement or sign&magnitude | |
329 | (if we have any of them) it could to make negative zero | |
330 | differ from normal zero. As I understand it. (Need to | |
331 | check - is negative zero implementation defined behaviour | |
332 | anyway?). NWC */ | |
0bd48802 AL |
333 | const UV buv = SvUVX(POPs); |
334 | const UV auv = SvUVX(TOPs); | |
28e5dec8 | 335 | |
28e5dec8 JH |
336 | SETs(boolSV(auv == buv)); |
337 | RETURN; | |
338 | } | |
339 | { /* ## Mixed IV,UV ## */ | |
1605159e | 340 | SV *ivp, *uvp; |
28e5dec8 | 341 | IV iv; |
28e5dec8 | 342 | |
1605159e | 343 | /* == is commutative so doesn't matter which is left or right */ |
28e5dec8 | 344 | if (auvok) { |
1605159e NC |
345 | /* top of stack (b) is the iv */ |
346 | ivp = *SP; | |
347 | uvp = *--SP; | |
348 | } else { | |
349 | uvp = *SP; | |
350 | ivp = *--SP; | |
351 | } | |
352 | iv = SvIVX(ivp); | |
d4c19fe8 | 353 | if (iv < 0) |
1605159e NC |
354 | /* As uv is a UV, it's >0, so it cannot be == */ |
355 | SETs(&PL_sv_no); | |
d4c19fe8 AL |
356 | else |
357 | /* we know iv is >= 0 */ | |
358 | SETs(boolSV((UV)iv == SvUVX(uvp))); | |
28e5dec8 JH |
359 | RETURN; |
360 | } | |
361 | } | |
362 | } | |
363 | #endif | |
a0d0e21e | 364 | { |
cab190d4 JD |
365 | #if defined(NAN_COMPARE_BROKEN) && defined(Perl_isnan) |
366 | dPOPTOPnnrl; | |
367 | if (Perl_isnan(left) || Perl_isnan(right)) | |
368 | RETSETNO; | |
369 | SETs(boolSV(left == right)); | |
370 | #else | |
a0d0e21e | 371 | dPOPnv; |
54310121 | 372 | SETs(boolSV(TOPn == value)); |
cab190d4 | 373 | #endif |
a0d0e21e LW |
374 | RETURN; |
375 | } | |
376 | } | |
377 | ||
378 | PP(pp_preinc) | |
379 | { | |
97aff369 | 380 | dVAR; dSP; |
f39684df | 381 | if (SvTYPE(TOPs) >= SVt_PVGV && SvTYPE(TOPs) != SVt_PVLV) |
d470f89e | 382 | DIE(aTHX_ PL_no_modify); |
3510b4a1 NC |
383 | if (!SvREADONLY(TOPs) && SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) |
384 | && SvIVX(TOPs) != IV_MAX) | |
55497cff | 385 | { |
45977657 | 386 | SvIV_set(TOPs, SvIVX(TOPs) + 1); |
55497cff | 387 | SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK); |
748a9306 | 388 | } |
28e5dec8 | 389 | else /* Do all the PERL_PRESERVE_IVUV conditionals in sv_inc */ |
748a9306 | 390 | sv_inc(TOPs); |
a0d0e21e LW |
391 | SvSETMAGIC(TOPs); |
392 | return NORMAL; | |
393 | } | |
394 | ||
395 | PP(pp_or) | |
396 | { | |
97aff369 | 397 | dVAR; dSP; |
a0d0e21e LW |
398 | if (SvTRUE(TOPs)) |
399 | RETURN; | |
400 | else { | |
c960fc3b SP |
401 | if (PL_op->op_type == OP_OR) |
402 | --SP; | |
a0d0e21e LW |
403 | RETURNOP(cLOGOP->op_other); |
404 | } | |
405 | } | |
406 | ||
25a55bd7 | 407 | PP(pp_defined) |
c963b151 | 408 | { |
97aff369 | 409 | dVAR; dSP; |
6136c704 AL |
410 | register SV* sv; |
411 | bool defined; | |
25a55bd7 | 412 | const int op_type = PL_op->op_type; |
6136c704 | 413 | const int is_dor = (op_type == OP_DOR || op_type == OP_DORASSIGN); |
c963b151 | 414 | |
6136c704 | 415 | if (is_dor) { |
25a55bd7 SP |
416 | sv = TOPs; |
417 | if (!sv || !SvANY(sv)) { | |
2bd49cfc NC |
418 | if (op_type == OP_DOR) |
419 | --SP; | |
25a55bd7 SP |
420 | RETURNOP(cLOGOP->op_other); |
421 | } | |
422 | } else if (op_type == OP_DEFINED) { | |
423 | sv = POPs; | |
424 | if (!sv || !SvANY(sv)) | |
425 | RETPUSHNO; | |
d9aa96a4 | 426 | } else |
52a5c517 | 427 | DIE(aTHX_ "panic: Invalid op (%s) in pp_defined()", OP_NAME(PL_op)); |
25a55bd7 | 428 | |
6136c704 | 429 | defined = FALSE; |
c963b151 BD |
430 | switch (SvTYPE(sv)) { |
431 | case SVt_PVAV: | |
432 | if (AvMAX(sv) >= 0 || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied))) | |
25a55bd7 | 433 | defined = TRUE; |
c963b151 BD |
434 | break; |
435 | case SVt_PVHV: | |
436 | if (HvARRAY(sv) || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied))) | |
25a55bd7 | 437 | defined = TRUE; |
c963b151 BD |
438 | break; |
439 | case SVt_PVCV: | |
440 | if (CvROOT(sv) || CvXSUB(sv)) | |
25a55bd7 | 441 | defined = TRUE; |
c963b151 BD |
442 | break; |
443 | default: | |
5b295bef | 444 | SvGETMAGIC(sv); |
c963b151 | 445 | if (SvOK(sv)) |
25a55bd7 | 446 | defined = TRUE; |
6136c704 | 447 | break; |
c963b151 | 448 | } |
6136c704 AL |
449 | |
450 | if (is_dor) { | |
c960fc3b SP |
451 | if(defined) |
452 | RETURN; | |
453 | if(op_type == OP_DOR) | |
454 | --SP; | |
25a55bd7 | 455 | RETURNOP(cLOGOP->op_other); |
25a55bd7 | 456 | } |
d9aa96a4 SP |
457 | /* assuming OP_DEFINED */ |
458 | if(defined) | |
459 | RETPUSHYES; | |
460 | RETPUSHNO; | |
c963b151 BD |
461 | } |
462 | ||
a0d0e21e LW |
463 | PP(pp_add) |
464 | { | |
97aff369 | 465 | dVAR; dSP; dATARGET; bool useleft; tryAMAGICbin(add,opASSIGN); |
28e5dec8 JH |
466 | useleft = USE_LEFT(TOPm1s); |
467 | #ifdef PERL_PRESERVE_IVUV | |
468 | /* We must see if we can perform the addition with integers if possible, | |
469 | as the integer code detects overflow while the NV code doesn't. | |
470 | If either argument hasn't had a numeric conversion yet attempt to get | |
471 | the IV. It's important to do this now, rather than just assuming that | |
472 | it's not IOK as a PV of "9223372036854775806" may not take well to NV | |
473 | addition, and an SV which is NOK, NV=6.0 ought to be coerced to | |
474 | integer in case the second argument is IV=9223372036854775806 | |
475 | We can (now) rely on sv_2iv to do the right thing, only setting the | |
476 | public IOK flag if the value in the NV (or PV) slot is truly integer. | |
477 | ||
478 | A side effect is that this also aggressively prefers integer maths over | |
7dca457a NC |
479 | fp maths for integer values. |
480 | ||
a00b5bd3 | 481 | How to detect overflow? |
7dca457a NC |
482 | |
483 | C 99 section 6.2.6.1 says | |
484 | ||
485 | The range of nonnegative values of a signed integer type is a subrange | |
486 | of the corresponding unsigned integer type, and the representation of | |
487 | the same value in each type is the same. A computation involving | |
488 | unsigned operands can never overflow, because a result that cannot be | |
489 | represented by the resulting unsigned integer type is reduced modulo | |
490 | the number that is one greater than the largest value that can be | |
491 | represented by the resulting type. | |
492 | ||
493 | (the 9th paragraph) | |
494 | ||
495 | which I read as "unsigned ints wrap." | |
496 | ||
497 | signed integer overflow seems to be classed as "exception condition" | |
498 | ||
499 | If an exceptional condition occurs during the evaluation of an | |
500 | expression (that is, if the result is not mathematically defined or not | |
501 | in the range of representable values for its type), the behavior is | |
502 | undefined. | |
503 | ||
504 | (6.5, the 5th paragraph) | |
505 | ||
506 | I had assumed that on 2s complement machines signed arithmetic would | |
507 | wrap, hence coded pp_add and pp_subtract on the assumption that | |
508 | everything perl builds on would be happy. After much wailing and | |
509 | gnashing of teeth it would seem that irix64 knows its ANSI spec well, | |
510 | knows that it doesn't need to, and doesn't. Bah. Anyway, the all- | |
511 | unsigned code below is actually shorter than the old code. :-) | |
512 | */ | |
513 | ||
28e5dec8 JH |
514 | SvIV_please(TOPs); |
515 | if (SvIOK(TOPs)) { | |
516 | /* Unless the left argument is integer in range we are going to have to | |
517 | use NV maths. Hence only attempt to coerce the right argument if | |
518 | we know the left is integer. */ | |
9c5ffd7c JH |
519 | register UV auv = 0; |
520 | bool auvok = FALSE; | |
7dca457a NC |
521 | bool a_valid = 0; |
522 | ||
28e5dec8 | 523 | if (!useleft) { |
7dca457a NC |
524 | auv = 0; |
525 | a_valid = auvok = 1; | |
526 | /* left operand is undef, treat as zero. + 0 is identity, | |
527 | Could SETi or SETu right now, but space optimise by not adding | |
528 | lots of code to speed up what is probably a rarish case. */ | |
529 | } else { | |
530 | /* Left operand is defined, so is it IV? */ | |
531 | SvIV_please(TOPm1s); | |
532 | if (SvIOK(TOPm1s)) { | |
533 | if ((auvok = SvUOK(TOPm1s))) | |
534 | auv = SvUVX(TOPm1s); | |
535 | else { | |
a3b680e6 | 536 | register const IV aiv = SvIVX(TOPm1s); |
7dca457a NC |
537 | if (aiv >= 0) { |
538 | auv = aiv; | |
539 | auvok = 1; /* Now acting as a sign flag. */ | |
540 | } else { /* 2s complement assumption for IV_MIN */ | |
541 | auv = (UV)-aiv; | |
542 | } | |
543 | } | |
544 | a_valid = 1; | |
28e5dec8 JH |
545 | } |
546 | } | |
7dca457a NC |
547 | if (a_valid) { |
548 | bool result_good = 0; | |
549 | UV result; | |
550 | register UV buv; | |
28e5dec8 | 551 | bool buvok = SvUOK(TOPs); |
a00b5bd3 | 552 | |
7dca457a NC |
553 | if (buvok) |
554 | buv = SvUVX(TOPs); | |
555 | else { | |
a3b680e6 | 556 | register const IV biv = SvIVX(TOPs); |
7dca457a NC |
557 | if (biv >= 0) { |
558 | buv = biv; | |
559 | buvok = 1; | |
560 | } else | |
561 | buv = (UV)-biv; | |
562 | } | |
563 | /* ?uvok if value is >= 0. basically, flagged as UV if it's +ve, | |
602f51c4 | 564 | else "IV" now, independent of how it came in. |
7dca457a NC |
565 | if a, b represents positive, A, B negative, a maps to -A etc |
566 | a + b => (a + b) | |
567 | A + b => -(a - b) | |
568 | a + B => (a - b) | |
569 | A + B => -(a + b) | |
570 | all UV maths. negate result if A negative. | |
571 | add if signs same, subtract if signs differ. */ | |
572 | ||
573 | if (auvok ^ buvok) { | |
574 | /* Signs differ. */ | |
575 | if (auv >= buv) { | |
576 | result = auv - buv; | |
577 | /* Must get smaller */ | |
578 | if (result <= auv) | |
579 | result_good = 1; | |
580 | } else { | |
581 | result = buv - auv; | |
582 | if (result <= buv) { | |
583 | /* result really should be -(auv-buv). as its negation | |
584 | of true value, need to swap our result flag */ | |
585 | auvok = !auvok; | |
586 | result_good = 1; | |
28e5dec8 JH |
587 | } |
588 | } | |
7dca457a NC |
589 | } else { |
590 | /* Signs same */ | |
591 | result = auv + buv; | |
592 | if (result >= auv) | |
593 | result_good = 1; | |
594 | } | |
595 | if (result_good) { | |
596 | SP--; | |
597 | if (auvok) | |
28e5dec8 | 598 | SETu( result ); |
7dca457a NC |
599 | else { |
600 | /* Negate result */ | |
601 | if (result <= (UV)IV_MIN) | |
602 | SETi( -(IV)result ); | |
603 | else { | |
604 | /* result valid, but out of range for IV. */ | |
605 | SETn( -(NV)result ); | |
28e5dec8 JH |
606 | } |
607 | } | |
7dca457a NC |
608 | RETURN; |
609 | } /* Overflow, drop through to NVs. */ | |
28e5dec8 JH |
610 | } |
611 | } | |
612 | #endif | |
a0d0e21e | 613 | { |
28e5dec8 JH |
614 | dPOPnv; |
615 | if (!useleft) { | |
616 | /* left operand is undef, treat as zero. + 0.0 is identity. */ | |
617 | SETn(value); | |
618 | RETURN; | |
619 | } | |
620 | SETn( value + TOPn ); | |
621 | RETURN; | |
a0d0e21e LW |
622 | } |
623 | } | |
624 | ||
625 | PP(pp_aelemfast) | |
626 | { | |
97aff369 | 627 | dVAR; dSP; |
c445ea15 | 628 | AV * const av = PL_op->op_flags & OPf_SPECIAL ? |
6a077020 | 629 | (AV*)PAD_SV(PL_op->op_targ) : GvAV(cGVOP_gv); |
a3b680e6 | 630 | const U32 lval = PL_op->op_flags & OPf_MOD; |
0bd48802 | 631 | SV** const svp = av_fetch(av, PL_op->op_private, lval); |
3280af22 | 632 | SV *sv = (svp ? *svp : &PL_sv_undef); |
6ff81951 | 633 | EXTEND(SP, 1); |
be6c24e0 GS |
634 | if (!lval && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
635 | sv = sv_mortalcopy(sv); | |
636 | PUSHs(sv); | |
a0d0e21e LW |
637 | RETURN; |
638 | } | |
639 | ||
640 | PP(pp_join) | |
641 | { | |
97aff369 | 642 | dVAR; dSP; dMARK; dTARGET; |
a0d0e21e LW |
643 | MARK++; |
644 | do_join(TARG, *MARK, MARK, SP); | |
645 | SP = MARK; | |
646 | SETs(TARG); | |
647 | RETURN; | |
648 | } | |
649 | ||
650 | PP(pp_pushre) | |
651 | { | |
97aff369 | 652 | dVAR; dSP; |
44a8e56a | 653 | #ifdef DEBUGGING |
654 | /* | |
655 | * We ass_u_me that LvTARGOFF() comes first, and that two STRLENs | |
656 | * will be enough to hold an OP*. | |
657 | */ | |
c4420975 | 658 | SV* const sv = sv_newmortal(); |
44a8e56a | 659 | sv_upgrade(sv, SVt_PVLV); |
660 | LvTYPE(sv) = '/'; | |
533c011a | 661 | Copy(&PL_op, &LvTARGOFF(sv), 1, OP*); |
44a8e56a | 662 | XPUSHs(sv); |
663 | #else | |
6b88bc9c | 664 | XPUSHs((SV*)PL_op); |
44a8e56a | 665 | #endif |
a0d0e21e LW |
666 | RETURN; |
667 | } | |
668 | ||
669 | /* Oversized hot code. */ | |
670 | ||
671 | PP(pp_print) | |
672 | { | |
27da23d5 | 673 | dVAR; dSP; dMARK; dORIGMARK; |
a0d0e21e | 674 | IO *io; |
760ac839 | 675 | register PerlIO *fp; |
236988e4 | 676 | MAGIC *mg; |
0bd48802 | 677 | GV * const gv = (PL_op->op_flags & OPf_STACKED) ? (GV*)*++MARK : PL_defoutgv; |
5b468f54 AMS |
678 | |
679 | if (gv && (io = GvIO(gv)) | |
680 | && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) | |
681 | { | |
01bb7c6d | 682 | had_magic: |
68dc0745 | 683 | if (MARK == ORIGMARK) { |
1c846c1f | 684 | /* If using default handle then we need to make space to |
a60c0954 NIS |
685 | * pass object as 1st arg, so move other args up ... |
686 | */ | |
4352c267 | 687 | MEXTEND(SP, 1); |
68dc0745 | 688 | ++MARK; |
689 | Move(MARK, MARK + 1, (SP - MARK) + 1, SV*); | |
690 | ++SP; | |
691 | } | |
692 | PUSHMARK(MARK - 1); | |
5b468f54 | 693 | *MARK = SvTIED_obj((SV*)io, mg); |
68dc0745 | 694 | PUTBACK; |
236988e4 | 695 | ENTER; |
864dbfa3 | 696 | call_method("PRINT", G_SCALAR); |
236988e4 | 697 | LEAVE; |
698 | SPAGAIN; | |
68dc0745 | 699 | MARK = ORIGMARK + 1; |
700 | *MARK = *SP; | |
701 | SP = MARK; | |
236988e4 | 702 | RETURN; |
703 | } | |
a0d0e21e | 704 | if (!(io = GvIO(gv))) { |
5b468f54 AMS |
705 | if ((GvEGV(gv)) && (io = GvIO(GvEGV(gv))) |
706 | && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) | |
01bb7c6d | 707 | goto had_magic; |
2dd78f96 JH |
708 | if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) |
709 | report_evil_fh(gv, io, PL_op->op_type); | |
93189314 | 710 | SETERRNO(EBADF,RMS_IFI); |
a0d0e21e LW |
711 | goto just_say_no; |
712 | } | |
713 | else if (!(fp = IoOFP(io))) { | |
599cee73 | 714 | if (ckWARN2(WARN_CLOSED, WARN_IO)) { |
4c80c0b2 NC |
715 | if (IoIFP(io)) |
716 | report_evil_fh(gv, io, OP_phoney_INPUT_ONLY); | |
2dd78f96 | 717 | else if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) |
bc37a18f | 718 | report_evil_fh(gv, io, PL_op->op_type); |
a0d0e21e | 719 | } |
93189314 | 720 | SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI); |
a0d0e21e LW |
721 | goto just_say_no; |
722 | } | |
723 | else { | |
724 | MARK++; | |
7889fe52 | 725 | if (PL_ofs_sv && SvOK(PL_ofs_sv)) { |
a0d0e21e LW |
726 | while (MARK <= SP) { |
727 | if (!do_print(*MARK, fp)) | |
728 | break; | |
729 | MARK++; | |
730 | if (MARK <= SP) { | |
7889fe52 | 731 | if (!do_print(PL_ofs_sv, fp)) { /* $, */ |
a0d0e21e LW |
732 | MARK--; |
733 | break; | |
734 | } | |
735 | } | |
736 | } | |
737 | } | |
738 | else { | |
739 | while (MARK <= SP) { | |
740 | if (!do_print(*MARK, fp)) | |
741 | break; | |
742 | MARK++; | |
743 | } | |
744 | } | |
745 | if (MARK <= SP) | |
746 | goto just_say_no; | |
747 | else { | |
7889fe52 NIS |
748 | if (PL_ors_sv && SvOK(PL_ors_sv)) |
749 | if (!do_print(PL_ors_sv, fp)) /* $\ */ | |
a0d0e21e LW |
750 | goto just_say_no; |
751 | ||
752 | if (IoFLAGS(io) & IOf_FLUSH) | |
760ac839 | 753 | if (PerlIO_flush(fp) == EOF) |
a0d0e21e LW |
754 | goto just_say_no; |
755 | } | |
756 | } | |
757 | SP = ORIGMARK; | |
e52fd6f4 | 758 | XPUSHs(&PL_sv_yes); |
a0d0e21e LW |
759 | RETURN; |
760 | ||
761 | just_say_no: | |
762 | SP = ORIGMARK; | |
e52fd6f4 | 763 | XPUSHs(&PL_sv_undef); |
a0d0e21e LW |
764 | RETURN; |
765 | } | |
766 | ||
767 | PP(pp_rv2av) | |
768 | { | |
97aff369 | 769 | dVAR; dSP; dTOPss; |
a0d0e21e LW |
770 | AV *av; |
771 | ||
772 | if (SvROK(sv)) { | |
773 | wasref: | |
f5284f61 IZ |
774 | tryAMAGICunDEREF(to_av); |
775 | ||
a0d0e21e LW |
776 | av = (AV*)SvRV(sv); |
777 | if (SvTYPE(av) != SVt_PVAV) | |
cea2e8a9 | 778 | DIE(aTHX_ "Not an ARRAY reference"); |
533c011a | 779 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 | 780 | SETs((SV*)av); |
a0d0e21e LW |
781 | RETURN; |
782 | } | |
78f9721b SM |
783 | else if (LVRET) { |
784 | if (GIMME == G_SCALAR) | |
785 | Perl_croak(aTHX_ "Can't return array to lvalue scalar context"); | |
786 | SETs((SV*)av); | |
787 | RETURN; | |
788 | } | |
82d03984 RGS |
789 | else if (PL_op->op_flags & OPf_MOD |
790 | && PL_op->op_private & OPpLVAL_INTRO) | |
791 | Perl_croak(aTHX_ PL_no_localize_ref); | |
a0d0e21e LW |
792 | } |
793 | else { | |
794 | if (SvTYPE(sv) == SVt_PVAV) { | |
795 | av = (AV*)sv; | |
533c011a | 796 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 | 797 | SETs((SV*)av); |
a0d0e21e LW |
798 | RETURN; |
799 | } | |
78f9721b SM |
800 | else if (LVRET) { |
801 | if (GIMME == G_SCALAR) | |
802 | Perl_croak(aTHX_ "Can't return array to lvalue" | |
803 | " scalar context"); | |
804 | SETs((SV*)av); | |
805 | RETURN; | |
806 | } | |
a0d0e21e LW |
807 | } |
808 | else { | |
67955e0c | 809 | GV *gv; |
1c846c1f | 810 | |
a0d0e21e LW |
811 | if (SvTYPE(sv) != SVt_PVGV) { |
812 | if (SvGMAGICAL(sv)) { | |
813 | mg_get(sv); | |
814 | if (SvROK(sv)) | |
815 | goto wasref; | |
816 | } | |
817 | if (!SvOK(sv)) { | |
533c011a NIS |
818 | if (PL_op->op_flags & OPf_REF || |
819 | PL_op->op_private & HINT_STRICT_REFS) | |
cea2e8a9 | 820 | DIE(aTHX_ PL_no_usym, "an ARRAY"); |
599cee73 | 821 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 822 | report_uninit(sv); |
f5284f61 | 823 | if (GIMME == G_ARRAY) { |
c2444246 | 824 | (void)POPs; |
4633a7c4 | 825 | RETURN; |
f5284f61 IZ |
826 | } |
827 | RETSETUNDEF; | |
a0d0e21e | 828 | } |
35cd451c GS |
829 | if ((PL_op->op_flags & OPf_SPECIAL) && |
830 | !(PL_op->op_flags & OPf_MOD)) | |
831 | { | |
f776e3cd | 832 | gv = (GV*)gv_fetchsv(sv, 0, SVt_PVAV); |
c9d5ac95 | 833 | if (!gv |
7a5fd60d | 834 | && (!is_gv_magical_sv(sv,0) |
f776e3cd | 835 | || !(gv = (GV*)gv_fetchsv(sv, GV_ADD, SVt_PVAV)))) |
c9d5ac95 | 836 | { |
35cd451c | 837 | RETSETUNDEF; |
c9d5ac95 | 838 | } |
35cd451c GS |
839 | } |
840 | else { | |
841 | if (PL_op->op_private & HINT_STRICT_REFS) | |
7a5fd60d | 842 | DIE(aTHX_ PL_no_symref_sv, sv, "an ARRAY"); |
f776e3cd | 843 | gv = (GV*)gv_fetchsv(sv, GV_ADD, SVt_PVAV); |
35cd451c GS |
844 | } |
845 | } | |
846 | else { | |
67955e0c | 847 | gv = (GV*)sv; |
a0d0e21e | 848 | } |
67955e0c | 849 | av = GvAVn(gv); |
533c011a | 850 | if (PL_op->op_private & OPpLVAL_INTRO) |
67955e0c | 851 | av = save_ary(gv); |
533c011a | 852 | if (PL_op->op_flags & OPf_REF) { |
f5284f61 | 853 | SETs((SV*)av); |
a0d0e21e LW |
854 | RETURN; |
855 | } | |
78f9721b SM |
856 | else if (LVRET) { |
857 | if (GIMME == G_SCALAR) | |
858 | Perl_croak(aTHX_ "Can't return array to lvalue" | |
859 | " scalar context"); | |
860 | SETs((SV*)av); | |
861 | RETURN; | |
862 | } | |
a0d0e21e LW |
863 | } |
864 | } | |
865 | ||
866 | if (GIMME == G_ARRAY) { | |
a3b680e6 | 867 | const I32 maxarg = AvFILL(av) + 1; |
c2444246 | 868 | (void)POPs; /* XXXX May be optimized away? */ |
1c846c1f | 869 | EXTEND(SP, maxarg); |
93965878 | 870 | if (SvRMAGICAL(av)) { |
1c846c1f | 871 | U32 i; |
eb160463 | 872 | for (i=0; i < (U32)maxarg; i++) { |
0bcc34c2 | 873 | SV ** const svp = av_fetch(av, i, FALSE); |
547d1dd8 HS |
874 | /* See note in pp_helem, and bug id #27839 */ |
875 | SP[i+1] = svp | |
876 | ? SvGMAGICAL(*svp) ? sv_mortalcopy(*svp) : *svp | |
877 | : &PL_sv_undef; | |
93965878 | 878 | } |
1c846c1f | 879 | } |
93965878 NIS |
880 | else { |
881 | Copy(AvARRAY(av), SP+1, maxarg, SV*); | |
882 | } | |
a0d0e21e LW |
883 | SP += maxarg; |
884 | } | |
c754c3d7 | 885 | else if (GIMME_V == G_SCALAR) { |
a0d0e21e | 886 | dTARGET; |
a3b680e6 | 887 | const I32 maxarg = AvFILL(av) + 1; |
f5284f61 | 888 | SETi(maxarg); |
a0d0e21e LW |
889 | } |
890 | RETURN; | |
891 | } | |
892 | ||
893 | PP(pp_rv2hv) | |
894 | { | |
97aff369 | 895 | dVAR; dSP; dTOPss; |
a0d0e21e | 896 | HV *hv; |
a3b680e6 AL |
897 | const I32 gimme = GIMME_V; |
898 | static const char return_hash_to_lvalue_scalar[] = "Can't return hash to lvalue scalar context"; | |
a0d0e21e LW |
899 | |
900 | if (SvROK(sv)) { | |
901 | wasref: | |
f5284f61 IZ |
902 | tryAMAGICunDEREF(to_hv); |
903 | ||
a0d0e21e | 904 | hv = (HV*)SvRV(sv); |
6d822dc4 | 905 | if (SvTYPE(hv) != SVt_PVHV) |
cea2e8a9 | 906 | DIE(aTHX_ "Not a HASH reference"); |
533c011a | 907 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e LW |
908 | SETs((SV*)hv); |
909 | RETURN; | |
910 | } | |
78f9721b | 911 | else if (LVRET) { |
be85d344 | 912 | if (gimme != G_ARRAY) |
a3b680e6 | 913 | Perl_croak(aTHX_ return_hash_to_lvalue_scalar ); |
78f9721b SM |
914 | SETs((SV*)hv); |
915 | RETURN; | |
916 | } | |
82d03984 RGS |
917 | else if (PL_op->op_flags & OPf_MOD |
918 | && PL_op->op_private & OPpLVAL_INTRO) | |
919 | Perl_croak(aTHX_ PL_no_localize_ref); | |
a0d0e21e LW |
920 | } |
921 | else { | |
6d822dc4 | 922 | if (SvTYPE(sv) == SVt_PVHV) { |
a0d0e21e | 923 | hv = (HV*)sv; |
533c011a | 924 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e LW |
925 | SETs((SV*)hv); |
926 | RETURN; | |
927 | } | |
78f9721b | 928 | else if (LVRET) { |
be85d344 | 929 | if (gimme != G_ARRAY) |
a3b680e6 | 930 | Perl_croak(aTHX_ return_hash_to_lvalue_scalar ); |
78f9721b SM |
931 | SETs((SV*)hv); |
932 | RETURN; | |
933 | } | |
a0d0e21e LW |
934 | } |
935 | else { | |
67955e0c | 936 | GV *gv; |
1c846c1f | 937 | |
a0d0e21e LW |
938 | if (SvTYPE(sv) != SVt_PVGV) { |
939 | if (SvGMAGICAL(sv)) { | |
940 | mg_get(sv); | |
941 | if (SvROK(sv)) | |
942 | goto wasref; | |
943 | } | |
944 | if (!SvOK(sv)) { | |
533c011a NIS |
945 | if (PL_op->op_flags & OPf_REF || |
946 | PL_op->op_private & HINT_STRICT_REFS) | |
cea2e8a9 | 947 | DIE(aTHX_ PL_no_usym, "a HASH"); |
599cee73 | 948 | if (ckWARN(WARN_UNINITIALIZED)) |
29489e7c | 949 | report_uninit(sv); |
be85d344 | 950 | if (gimme == G_ARRAY) { |
4633a7c4 LW |
951 | SP--; |
952 | RETURN; | |
953 | } | |
a0d0e21e LW |
954 | RETSETUNDEF; |
955 | } | |
35cd451c GS |
956 | if ((PL_op->op_flags & OPf_SPECIAL) && |
957 | !(PL_op->op_flags & OPf_MOD)) | |
958 | { | |
f776e3cd | 959 | gv = (GV*)gv_fetchsv(sv, 0, SVt_PVHV); |
c9d5ac95 | 960 | if (!gv |
7a5fd60d | 961 | && (!is_gv_magical_sv(sv,0) |
f776e3cd | 962 | || !(gv = (GV*)gv_fetchsv(sv, GV_ADD, SVt_PVHV)))) |
c9d5ac95 | 963 | { |
35cd451c | 964 | RETSETUNDEF; |
c9d5ac95 | 965 | } |
35cd451c GS |
966 | } |
967 | else { | |
968 | if (PL_op->op_private & HINT_STRICT_REFS) | |
7a5fd60d | 969 | DIE(aTHX_ PL_no_symref_sv, sv, "a HASH"); |
f776e3cd | 970 | gv = (GV*)gv_fetchsv(sv, GV_ADD, SVt_PVHV); |
35cd451c GS |
971 | } |
972 | } | |
973 | else { | |
67955e0c | 974 | gv = (GV*)sv; |
a0d0e21e | 975 | } |
67955e0c | 976 | hv = GvHVn(gv); |
533c011a | 977 | if (PL_op->op_private & OPpLVAL_INTRO) |
67955e0c | 978 | hv = save_hash(gv); |
533c011a | 979 | if (PL_op->op_flags & OPf_REF) { |
a0d0e21e LW |
980 | SETs((SV*)hv); |
981 | RETURN; | |
982 | } | |
78f9721b | 983 | else if (LVRET) { |
be85d344 | 984 | if (gimme != G_ARRAY) |
a3b680e6 | 985 | Perl_croak(aTHX_ return_hash_to_lvalue_scalar ); |
78f9721b SM |
986 | SETs((SV*)hv); |
987 | RETURN; | |
988 | } | |
a0d0e21e LW |
989 | } |
990 | } | |
991 | ||
be85d344 | 992 | if (gimme == G_ARRAY) { /* array wanted */ |
3280af22 | 993 | *PL_stack_sp = (SV*)hv; |
cea2e8a9 | 994 | return do_kv(); |
a0d0e21e | 995 | } |
be85d344 | 996 | else if (gimme == G_SCALAR) { |
a0d0e21e | 997 | dTARGET; |
243d6ab3 | 998 | TARG = Perl_hv_scalar(aTHX_ hv); |
a0d0e21e | 999 | SETTARG; |
a0d0e21e | 1000 | } |
be85d344 | 1001 | RETURN; |
a0d0e21e LW |
1002 | } |
1003 | ||
10c8fecd GS |
1004 | STATIC void |
1005 | S_do_oddball(pTHX_ HV *hash, SV **relem, SV **firstrelem) | |
1006 | { | |
97aff369 | 1007 | dVAR; |
10c8fecd GS |
1008 | if (*relem) { |
1009 | SV *tmpstr; | |
b464bac0 | 1010 | const HE *didstore; |
6d822dc4 MS |
1011 | |
1012 | if (ckWARN(WARN_MISC)) { | |
a3b680e6 | 1013 | const char *err; |
10c8fecd GS |
1014 | if (relem == firstrelem && |
1015 | SvROK(*relem) && | |
1016 | (SvTYPE(SvRV(*relem)) == SVt_PVAV || | |
1017 | SvTYPE(SvRV(*relem)) == SVt_PVHV)) | |
1018 | { | |
a3b680e6 | 1019 | err = "Reference found where even-sized list expected"; |
10c8fecd GS |
1020 | } |
1021 | else | |
a3b680e6 AL |
1022 | err = "Odd number of elements in hash assignment"; |
1023 | Perl_warner(aTHX_ packWARN(WARN_MISC), err); | |
10c8fecd | 1024 | } |
6d822dc4 | 1025 | |
561b68a9 | 1026 | tmpstr = newSV(0); |
6d822dc4 MS |
1027 | didstore = hv_store_ent(hash,*relem,tmpstr,0); |
1028 | if (SvMAGICAL(hash)) { | |
1029 | if (SvSMAGICAL(tmpstr)) | |
1030 | mg_set(tmpstr); | |
1031 | if (!didstore) | |
1032 | sv_2mortal(tmpstr); | |
1033 | } | |
1034 | TAINT_NOT; | |
10c8fecd GS |
1035 | } |
1036 | } | |
1037 | ||
a0d0e21e LW |
1038 | PP(pp_aassign) |
1039 | { | |
27da23d5 | 1040 | dVAR; dSP; |
3280af22 NIS |
1041 | SV **lastlelem = PL_stack_sp; |
1042 | SV **lastrelem = PL_stack_base + POPMARK; | |
1043 | SV **firstrelem = PL_stack_base + POPMARK + 1; | |
a0d0e21e LW |
1044 | SV **firstlelem = lastrelem + 1; |
1045 | ||
1046 | register SV **relem; | |
1047 | register SV **lelem; | |
1048 | ||
1049 | register SV *sv; | |
1050 | register AV *ary; | |
1051 | ||
54310121 | 1052 | I32 gimme; |
a0d0e21e LW |
1053 | HV *hash; |
1054 | I32 i; | |
1055 | int magic; | |
ca65944e | 1056 | int duplicates = 0; |
cbbf8932 | 1057 | SV **firsthashrelem = NULL; /* "= 0" keeps gcc 2.95 quiet */ |
5637b936 | 1058 | |
a0d0e21e | 1059 | |
3280af22 | 1060 | PL_delaymagic = DM_DELAY; /* catch simultaneous items */ |
ca65944e | 1061 | gimme = GIMME_V; |
a0d0e21e LW |
1062 | |
1063 | /* If there's a common identifier on both sides we have to take | |
1064 | * special care that assigning the identifier on the left doesn't | |
1065 | * clobber a value on the right that's used later in the list. | |
1066 | */ | |
10c8fecd | 1067 | if (PL_op->op_private & (OPpASSIGN_COMMON)) { |
cc5e57d2 | 1068 | EXTEND_MORTAL(lastrelem - firstrelem + 1); |
10c8fecd | 1069 | for (relem = firstrelem; relem <= lastrelem; relem++) { |
155aba94 | 1070 | if ((sv = *relem)) { |
a1f49e72 | 1071 | TAINT_NOT; /* Each item is independent */ |
10c8fecd | 1072 | *relem = sv_mortalcopy(sv); |
a1f49e72 | 1073 | } |
10c8fecd | 1074 | } |
a0d0e21e LW |
1075 | } |
1076 | ||
1077 | relem = firstrelem; | |
1078 | lelem = firstlelem; | |
4608196e RGS |
1079 | ary = NULL; |
1080 | hash = NULL; | |
10c8fecd | 1081 | |
a0d0e21e | 1082 | while (lelem <= lastlelem) { |
bbce6d69 | 1083 | TAINT_NOT; /* Each item stands on its own, taintwise. */ |
a0d0e21e LW |
1084 | sv = *lelem++; |
1085 | switch (SvTYPE(sv)) { | |
1086 | case SVt_PVAV: | |
1087 | ary = (AV*)sv; | |
748a9306 | 1088 | magic = SvMAGICAL(ary) != 0; |
a0d0e21e | 1089 | av_clear(ary); |
7e42bd57 | 1090 | av_extend(ary, lastrelem - relem); |
a0d0e21e LW |
1091 | i = 0; |
1092 | while (relem <= lastrelem) { /* gobble up all the rest */ | |
5117ca91 | 1093 | SV **didstore; |
a0d0e21e | 1094 | assert(*relem); |
f2b990bf | 1095 | sv = newSVsv(*relem); |
a0d0e21e | 1096 | *(relem++) = sv; |
5117ca91 GS |
1097 | didstore = av_store(ary,i++,sv); |
1098 | if (magic) { | |
fb73857a | 1099 | if (SvSMAGICAL(sv)) |
1100 | mg_set(sv); | |
5117ca91 | 1101 | if (!didstore) |
8127e0e3 | 1102 | sv_2mortal(sv); |
5117ca91 | 1103 | } |
bbce6d69 | 1104 | TAINT_NOT; |
a0d0e21e LW |
1105 | } |
1106 | break; | |
10c8fecd | 1107 | case SVt_PVHV: { /* normal hash */ |
a0d0e21e LW |
1108 | SV *tmpstr; |
1109 | ||
1110 | hash = (HV*)sv; | |
748a9306 | 1111 | magic = SvMAGICAL(hash) != 0; |
a0d0e21e | 1112 | hv_clear(hash); |
ca65944e | 1113 | firsthashrelem = relem; |
a0d0e21e LW |
1114 | |
1115 | while (relem < lastrelem) { /* gobble up all the rest */ | |
5117ca91 | 1116 | HE *didstore; |
6136c704 AL |
1117 | sv = *relem ? *relem : &PL_sv_no; |
1118 | relem++; | |
561b68a9 | 1119 | tmpstr = newSV(0); |
a0d0e21e LW |
1120 | if (*relem) |
1121 | sv_setsv(tmpstr,*relem); /* value */ | |
1122 | *(relem++) = tmpstr; | |
ca65944e RGS |
1123 | if (gimme != G_VOID && hv_exists_ent(hash, sv, 0)) |
1124 | /* key overwrites an existing entry */ | |
1125 | duplicates += 2; | |
5117ca91 GS |
1126 | didstore = hv_store_ent(hash,sv,tmpstr,0); |
1127 | if (magic) { | |
fb73857a | 1128 | if (SvSMAGICAL(tmpstr)) |
1129 | mg_set(tmpstr); | |
5117ca91 | 1130 | if (!didstore) |
8127e0e3 | 1131 | sv_2mortal(tmpstr); |
5117ca91 | 1132 | } |
bbce6d69 | 1133 | TAINT_NOT; |
8e07c86e | 1134 | } |
6a0deba8 | 1135 | if (relem == lastrelem) { |
10c8fecd | 1136 | do_oddball(hash, relem, firstrelem); |
6a0deba8 | 1137 | relem++; |
1930e939 | 1138 | } |
a0d0e21e LW |
1139 | } |
1140 | break; | |
1141 | default: | |
6fc92669 GS |
1142 | if (SvIMMORTAL(sv)) { |
1143 | if (relem <= lastrelem) | |
1144 | relem++; | |
1145 | break; | |
a0d0e21e LW |
1146 | } |
1147 | if (relem <= lastrelem) { | |
1148 | sv_setsv(sv, *relem); | |
1149 | *(relem++) = sv; | |
1150 | } | |
1151 | else | |
3280af22 | 1152 | sv_setsv(sv, &PL_sv_undef); |
a0d0e21e LW |
1153 | SvSETMAGIC(sv); |
1154 | break; | |
1155 | } | |
1156 | } | |
3280af22 NIS |
1157 | if (PL_delaymagic & ~DM_DELAY) { |
1158 | if (PL_delaymagic & DM_UID) { | |
a0d0e21e | 1159 | #ifdef HAS_SETRESUID |
fb934a90 RD |
1160 | (void)setresuid((PL_delaymagic & DM_RUID) ? PL_uid : (Uid_t)-1, |
1161 | (PL_delaymagic & DM_EUID) ? PL_euid : (Uid_t)-1, | |
1162 | (Uid_t)-1); | |
56febc5e AD |
1163 | #else |
1164 | # ifdef HAS_SETREUID | |
fb934a90 RD |
1165 | (void)setreuid((PL_delaymagic & DM_RUID) ? PL_uid : (Uid_t)-1, |
1166 | (PL_delaymagic & DM_EUID) ? PL_euid : (Uid_t)-1); | |
56febc5e AD |
1167 | # else |
1168 | # ifdef HAS_SETRUID | |
b28d0864 NIS |
1169 | if ((PL_delaymagic & DM_UID) == DM_RUID) { |
1170 | (void)setruid(PL_uid); | |
1171 | PL_delaymagic &= ~DM_RUID; | |
a0d0e21e | 1172 | } |
56febc5e AD |
1173 | # endif /* HAS_SETRUID */ |
1174 | # ifdef HAS_SETEUID | |
b28d0864 | 1175 | if ((PL_delaymagic & DM_UID) == DM_EUID) { |
fb934a90 | 1176 | (void)seteuid(PL_euid); |
b28d0864 | 1177 | PL_delaymagic &= ~DM_EUID; |
a0d0e21e | 1178 | } |
56febc5e | 1179 | # endif /* HAS_SETEUID */ |
b28d0864 NIS |
1180 | if (PL_delaymagic & DM_UID) { |
1181 | if (PL_uid != PL_euid) | |
cea2e8a9 | 1182 | DIE(aTHX_ "No setreuid available"); |
b28d0864 | 1183 | (void)PerlProc_setuid(PL_uid); |
a0d0e21e | 1184 | } |
56febc5e AD |
1185 | # endif /* HAS_SETREUID */ |
1186 | #endif /* HAS_SETRESUID */ | |
d8eceb89 JH |
1187 | PL_uid = PerlProc_getuid(); |
1188 | PL_euid = PerlProc_geteuid(); | |
a0d0e21e | 1189 | } |
3280af22 | 1190 | if (PL_delaymagic & DM_GID) { |
a0d0e21e | 1191 | #ifdef HAS_SETRESGID |
fb934a90 RD |
1192 | (void)setresgid((PL_delaymagic & DM_RGID) ? PL_gid : (Gid_t)-1, |
1193 | (PL_delaymagic & DM_EGID) ? PL_egid : (Gid_t)-1, | |
1194 | (Gid_t)-1); | |
56febc5e AD |
1195 | #else |
1196 | # ifdef HAS_SETREGID | |
fb934a90 RD |
1197 | (void)setregid((PL_delaymagic & DM_RGID) ? PL_gid : (Gid_t)-1, |
1198 | (PL_delaymagic & DM_EGID) ? PL_egid : (Gid_t)-1); | |
56febc5e AD |
1199 | # else |
1200 | # ifdef HAS_SETRGID | |
b28d0864 NIS |
1201 | if ((PL_delaymagic & DM_GID) == DM_RGID) { |
1202 | (void)setrgid(PL_gid); | |
1203 | PL_delaymagic &= ~DM_RGID; | |
a0d0e21e | 1204 | } |
56febc5e AD |
1205 | # endif /* HAS_SETRGID */ |
1206 | # ifdef HAS_SETEGID | |
b28d0864 | 1207 | if ((PL_delaymagic & DM_GID) == DM_EGID) { |
fb934a90 | 1208 | (void)setegid(PL_egid); |
b28d0864 | 1209 | PL_delaymagic &= ~DM_EGID; |
a0d0e21e | 1210 | } |
56febc5e | 1211 | # endif /* HAS_SETEGID */ |
b28d0864 NIS |
1212 | if (PL_delaymagic & DM_GID) { |
1213 | if (PL_gid != PL_egid) | |
cea2e8a9 | 1214 | DIE(aTHX_ "No setregid available"); |
b28d0864 | 1215 | (void)PerlProc_setgid(PL_gid); |
a0d0e21e | 1216 | } |
56febc5e AD |
1217 | # endif /* HAS_SETREGID */ |
1218 | #endif /* HAS_SETRESGID */ | |
d8eceb89 JH |
1219 | PL_gid = PerlProc_getgid(); |
1220 | PL_egid = PerlProc_getegid(); | |
a0d0e21e | 1221 | } |
3280af22 | 1222 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
a0d0e21e | 1223 | } |
3280af22 | 1224 | PL_delaymagic = 0; |
54310121 | 1225 | |
54310121 | 1226 | if (gimme == G_VOID) |
1227 | SP = firstrelem - 1; | |
1228 | else if (gimme == G_SCALAR) { | |
1229 | dTARGET; | |
1230 | SP = firstrelem; | |
ca65944e | 1231 | SETi(lastrelem - firstrelem + 1 - duplicates); |
54310121 | 1232 | } |
1233 | else { | |
ca65944e | 1234 | if (ary) |
a0d0e21e | 1235 | SP = lastrelem; |
ca65944e RGS |
1236 | else if (hash) { |
1237 | if (duplicates) { | |
1238 | /* Removes from the stack the entries which ended up as | |
1239 | * duplicated keys in the hash (fix for [perl #24380]) */ | |
1240 | Move(firsthashrelem + duplicates, | |
1241 | firsthashrelem, duplicates, SV**); | |
1242 | lastrelem -= duplicates; | |
1243 | } | |
1244 | SP = lastrelem; | |
1245 | } | |
a0d0e21e LW |
1246 | else |
1247 | SP = firstrelem + (lastlelem - firstlelem); | |
0c8c7a05 | 1248 | lelem = firstlelem + (relem - firstrelem); |
5f05dabc | 1249 | while (relem <= SP) |
3280af22 | 1250 | *relem++ = (lelem <= lastlelem) ? *lelem++ : &PL_sv_undef; |
a0d0e21e | 1251 | } |
54310121 | 1252 | RETURN; |
a0d0e21e LW |
1253 | } |
1254 | ||
8782bef2 GB |
1255 | PP(pp_qr) |
1256 | { | |
97aff369 | 1257 | dVAR; dSP; |
c4420975 AL |
1258 | register PMOP * const pm = cPMOP; |
1259 | SV * const rv = sv_newmortal(); | |
1260 | SV * const sv = newSVrv(rv, "Regexp"); | |
e08e52cf AMS |
1261 | if (pm->op_pmdynflags & PMdf_TAINTED) |
1262 | SvTAINTED_on(rv); | |
aaa362c4 | 1263 | sv_magic(sv,(SV*)ReREFCNT_inc(PM_GETRE(pm)), PERL_MAGIC_qr,0,0); |
8782bef2 GB |
1264 | RETURNX(PUSHs(rv)); |
1265 | } | |
1266 | ||
a0d0e21e LW |
1267 | PP(pp_match) |
1268 | { | |
97aff369 | 1269 | dVAR; dSP; dTARG; |
a0d0e21e | 1270 | register PMOP *pm = cPMOP; |
d65afb4b | 1271 | PMOP *dynpm = pm; |
0d46e09a SP |
1272 | register const char *t; |
1273 | register const char *s; | |
5c144d81 | 1274 | const char *strend; |
a0d0e21e | 1275 | I32 global; |
f722798b | 1276 | I32 r_flags = REXEC_CHECKED; |
5c144d81 | 1277 | const char *truebase; /* Start of string */ |
aaa362c4 | 1278 | register REGEXP *rx = PM_GETRE(pm); |
b3eb6a9b | 1279 | bool rxtainted; |
a3b680e6 | 1280 | const I32 gimme = GIMME; |
a0d0e21e | 1281 | STRLEN len; |
748a9306 | 1282 | I32 minmatch = 0; |
a3b680e6 | 1283 | const I32 oldsave = PL_savestack_ix; |
f86702cc | 1284 | I32 update_minmatch = 1; |
e60df1fa | 1285 | I32 had_zerolen = 0; |
a0d0e21e | 1286 | |
533c011a | 1287 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e | 1288 | TARG = POPs; |
59f00321 RGS |
1289 | else if (PL_op->op_private & OPpTARGET_MY) |
1290 | GETTARGET; | |
a0d0e21e | 1291 | else { |
54b9620d | 1292 | TARG = DEFSV; |
a0d0e21e LW |
1293 | EXTEND(SP,1); |
1294 | } | |
d9f424b2 | 1295 | |
c277df42 | 1296 | PUTBACK; /* EVAL blocks need stack_sp. */ |
5c144d81 | 1297 | s = SvPV_const(TARG, len); |
a0d0e21e | 1298 | if (!s) |
2269b42e | 1299 | DIE(aTHX_ "panic: pp_match"); |
890ce7af | 1300 | strend = s + len; |
b3eb6a9b | 1301 | rxtainted = ((pm->op_pmdynflags & PMdf_TAINTED) || |
3280af22 | 1302 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
9212bbba | 1303 | TAINT_NOT; |
a0d0e21e | 1304 | |
a30b2f1f | 1305 | RX_MATCH_UTF8_set(rx, DO_UTF8(TARG)); |
d9f424b2 | 1306 | |
d65afb4b | 1307 | /* PMdf_USED is set after a ?? matches once */ |
48c036b1 | 1308 | if (pm->op_pmdynflags & PMdf_USED) { |
c277df42 | 1309 | failure: |
a0d0e21e LW |
1310 | if (gimme == G_ARRAY) |
1311 | RETURN; | |
1312 | RETPUSHNO; | |
1313 | } | |
1314 | ||
d65afb4b | 1315 | /* empty pattern special-cased to use last successful pattern if possible */ |
3280af22 NIS |
1316 | if (!rx->prelen && PL_curpm) { |
1317 | pm = PL_curpm; | |
aaa362c4 | 1318 | rx = PM_GETRE(pm); |
a0d0e21e | 1319 | } |
d65afb4b | 1320 | |
eb160463 | 1321 | if (rx->minlen > (I32)len) |
d65afb4b | 1322 | goto failure; |
c277df42 | 1323 | |
a0d0e21e | 1324 | truebase = t = s; |
ad94a511 IZ |
1325 | |
1326 | /* XXXX What part of this is needed with true \G-support? */ | |
d65afb4b | 1327 | if ((global = dynpm->op_pmflags & PMf_GLOBAL)) { |
cf93c79d | 1328 | rx->startp[0] = -1; |
a0d0e21e | 1329 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
c445ea15 | 1330 | MAGIC* const mg = mg_find(TARG, PERL_MAGIC_regex_global); |
565764a8 | 1331 | if (mg && mg->mg_len >= 0) { |
b7a35066 | 1332 | if (!(rx->reganch & ROPT_GPOS_SEEN)) |
1c846c1f | 1333 | rx->endp[0] = rx->startp[0] = mg->mg_len; |
0ef3e39e HS |
1334 | else if (rx->reganch & ROPT_ANCH_GPOS) { |
1335 | r_flags |= REXEC_IGNOREPOS; | |
1c846c1f | 1336 | rx->endp[0] = rx->startp[0] = mg->mg_len; |
0ef3e39e | 1337 | } |
748a9306 | 1338 | minmatch = (mg->mg_flags & MGf_MINMATCH); |
f86702cc | 1339 | update_minmatch = 0; |
748a9306 | 1340 | } |
a0d0e21e LW |
1341 | } |
1342 | } | |
14977893 | 1343 | if ((!global && rx->nparens) |
0b78c20a | 1344 | || SvTEMP(TARG) || PL_sawampersand || (pm->op_pmflags & PMf_EVAL)) |
14977893 | 1345 | r_flags |= REXEC_COPY_STR; |
1c846c1f | 1346 | if (SvSCREAM(TARG)) |
22e551b9 IZ |
1347 | r_flags |= REXEC_SCREAM; |
1348 | ||
a0d0e21e | 1349 | play_it_again: |
cf93c79d IZ |
1350 | if (global && rx->startp[0] != -1) { |
1351 | t = s = rx->endp[0] + truebase; | |
d9f97599 | 1352 | if ((s + rx->minlen) > strend) |
a0d0e21e | 1353 | goto nope; |
f86702cc | 1354 | if (update_minmatch++) |
e60df1fa | 1355 | minmatch = had_zerolen; |
a0d0e21e | 1356 | } |
60aeb6fd NIS |
1357 | if (rx->reganch & RE_USE_INTUIT && |
1358 | DO_UTF8(TARG) == ((rx->reganch & ROPT_UTF8) != 0)) { | |
5c144d81 NC |
1359 | /* FIXME - can PL_bostr be made const char *? */ |
1360 | PL_bostr = (char *)truebase; | |
1361 | s = CALLREG_INTUIT_START(aTHX_ rx, TARG, (char *)s, (char *)strend, r_flags, NULL); | |
f722798b IZ |
1362 | |
1363 | if (!s) | |
1364 | goto nope; | |
1365 | if ( (rx->reganch & ROPT_CHECK_ALL) | |
14977893 | 1366 | && !PL_sawampersand |
f722798b IZ |
1367 | && ((rx->reganch & ROPT_NOSCAN) |
1368 | || !((rx->reganch & RE_INTUIT_TAIL) | |
05b4157f GS |
1369 | && (r_flags & REXEC_SCREAM))) |
1370 | && !SvROK(TARG)) /* Cannot trust since INTUIT cannot guess ^ */ | |
f722798b | 1371 | goto yup; |
a0d0e21e | 1372 | } |
5c144d81 | 1373 | if (CALLREGEXEC(aTHX_ rx, (char*)s, (char *)strend, (char*)truebase, minmatch, TARG, NULL, r_flags)) |
bbce6d69 | 1374 | { |
3280af22 | 1375 | PL_curpm = pm; |
d65afb4b HS |
1376 | if (dynpm->op_pmflags & PMf_ONCE) |
1377 | dynpm->op_pmdynflags |= PMdf_USED; | |
a0d0e21e LW |
1378 | goto gotcha; |
1379 | } | |
1380 | else | |
1381 | goto ret_no; | |
1382 | /*NOTREACHED*/ | |
1383 | ||
1384 | gotcha: | |
72311751 GS |
1385 | if (rxtainted) |
1386 | RX_MATCH_TAINTED_on(rx); | |
1387 | TAINT_IF(RX_MATCH_TAINTED(rx)); | |
a0d0e21e | 1388 | if (gimme == G_ARRAY) { |
a3b680e6 AL |
1389 | const I32 nparens = rx->nparens; |
1390 | I32 i = (global && !nparens) ? 1 : 0; | |
a0d0e21e | 1391 | |
c277df42 | 1392 | SPAGAIN; /* EVAL blocks could move the stack. */ |
ffc61ed2 JH |
1393 | EXTEND(SP, nparens + i); |
1394 | EXTEND_MORTAL(nparens + i); | |
1395 | for (i = !i; i <= nparens; i++) { | |
a0d0e21e | 1396 | PUSHs(sv_newmortal()); |
cf93c79d | 1397 | if ((rx->startp[i] != -1) && rx->endp[i] != -1 ) { |
b464bac0 | 1398 | const I32 len = rx->endp[i] - rx->startp[i]; |
289555fe | 1399 | s = rx->startp[i] + truebase; |
290deeac A |
1400 | if (rx->endp[i] < 0 || rx->startp[i] < 0 || |
1401 | len < 0 || len > strend - s) | |
1402 | DIE(aTHX_ "panic: pp_match start/end pointers"); | |
a0d0e21e | 1403 | sv_setpvn(*SP, s, len); |
cce850e4 | 1404 | if (DO_UTF8(TARG) && is_utf8_string((U8*)s, len)) |
a197cbdd | 1405 | SvUTF8_on(*SP); |
a0d0e21e LW |
1406 | } |
1407 | } | |
1408 | if (global) { | |
d65afb4b | 1409 | if (dynpm->op_pmflags & PMf_CONTINUE) { |
6136c704 | 1410 | MAGIC* mg = NULL; |
0af80b60 HS |
1411 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) |
1412 | mg = mg_find(TARG, PERL_MAGIC_regex_global); | |
1413 | if (!mg) { | |
d83f0a82 NC |
1414 | #ifdef PERL_OLD_COPY_ON_WRITE |
1415 | if (SvIsCOW(TARG)) | |
1416 | sv_force_normal_flags(TARG, 0); | |
1417 | #endif | |
1418 | mg = sv_magicext(TARG, NULL, PERL_MAGIC_regex_global, | |
1419 | &PL_vtbl_mglob, NULL, 0); | |
0af80b60 HS |
1420 | } |
1421 | if (rx->startp[0] != -1) { | |
1422 | mg->mg_len = rx->endp[0]; | |
1423 | if (rx->startp[0] == rx->endp[0]) | |
1424 | mg->mg_flags |= MGf_MINMATCH; | |
1425 | else | |
1426 | mg->mg_flags &= ~MGf_MINMATCH; | |
1427 | } | |
1428 | } | |
cf93c79d IZ |
1429 | had_zerolen = (rx->startp[0] != -1 |
1430 | && rx->startp[0] == rx->endp[0]); | |
c277df42 | 1431 | PUTBACK; /* EVAL blocks may use stack */ |
cf93c79d | 1432 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e LW |
1433 | goto play_it_again; |
1434 | } | |
ffc61ed2 | 1435 | else if (!nparens) |
bde848c5 | 1436 | XPUSHs(&PL_sv_yes); |
4633a7c4 | 1437 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1438 | RETURN; |
1439 | } | |
1440 | else { | |
1441 | if (global) { | |
cbbf8932 | 1442 | MAGIC* mg; |
a0d0e21e | 1443 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) |
14befaf4 | 1444 | mg = mg_find(TARG, PERL_MAGIC_regex_global); |
cbbf8932 AL |
1445 | else |
1446 | mg = NULL; | |
a0d0e21e | 1447 | if (!mg) { |
d83f0a82 NC |
1448 | #ifdef PERL_OLD_COPY_ON_WRITE |
1449 | if (SvIsCOW(TARG)) | |
1450 | sv_force_normal_flags(TARG, 0); | |
1451 | #endif | |
1452 | mg = sv_magicext(TARG, NULL, PERL_MAGIC_regex_global, | |
1453 | &PL_vtbl_mglob, NULL, 0); | |
a0d0e21e | 1454 | } |
cf93c79d IZ |
1455 | if (rx->startp[0] != -1) { |
1456 | mg->mg_len = rx->endp[0]; | |
d9f97599 | 1457 | if (rx->startp[0] == rx->endp[0]) |
748a9306 LW |
1458 | mg->mg_flags |= MGf_MINMATCH; |
1459 | else | |
1460 | mg->mg_flags &= ~MGf_MINMATCH; | |
1461 | } | |
a0d0e21e | 1462 | } |
4633a7c4 | 1463 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1464 | RETPUSHYES; |
1465 | } | |
1466 | ||
f722798b | 1467 | yup: /* Confirmed by INTUIT */ |
72311751 GS |
1468 | if (rxtainted) |
1469 | RX_MATCH_TAINTED_on(rx); | |
1470 | TAINT_IF(RX_MATCH_TAINTED(rx)); | |
3280af22 | 1471 | PL_curpm = pm; |
d65afb4b HS |
1472 | if (dynpm->op_pmflags & PMf_ONCE) |
1473 | dynpm->op_pmdynflags |= PMdf_USED; | |
cf93c79d IZ |
1474 | if (RX_MATCH_COPIED(rx)) |
1475 | Safefree(rx->subbeg); | |
1476 | RX_MATCH_COPIED_off(rx); | |
6136c704 | 1477 | rx->subbeg = NULL; |
a0d0e21e | 1478 | if (global) { |
5c144d81 NC |
1479 | /* FIXME - should rx->subbeg be const char *? */ |
1480 | rx->subbeg = (char *) truebase; | |
cf93c79d | 1481 | rx->startp[0] = s - truebase; |
a30b2f1f | 1482 | if (RX_MATCH_UTF8(rx)) { |
0bcc34c2 | 1483 | char * const t = (char*)utf8_hop((U8*)s, rx->minlen); |
60aeb6fd NIS |
1484 | rx->endp[0] = t - truebase; |
1485 | } | |
1486 | else { | |
1487 | rx->endp[0] = s - truebase + rx->minlen; | |
1488 | } | |
cf93c79d | 1489 | rx->sublen = strend - truebase; |
a0d0e21e | 1490 | goto gotcha; |
1c846c1f | 1491 | } |
14977893 JH |
1492 | if (PL_sawampersand) { |
1493 | I32 off; | |
f8c7b90f | 1494 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
1495 | if (SvIsCOW(TARG) || (SvFLAGS(TARG) & CAN_COW_MASK) == CAN_COW_FLAGS) { |
1496 | if (DEBUG_C_TEST) { | |
1497 | PerlIO_printf(Perl_debug_log, | |
1498 | "Copy on write: pp_match $& capture, type %d, truebase=%p, t=%p, difference %d\n", | |
1499 | (int) SvTYPE(TARG), truebase, t, | |
1500 | (int)(t-truebase)); | |
1501 | } | |
1502 | rx->saved_copy = sv_setsv_cow(rx->saved_copy, TARG); | |
555831ce | 1503 | rx->subbeg = (char *) SvPVX_const(rx->saved_copy) + (t - truebase); |
ed252734 NC |
1504 | assert (SvPOKp(rx->saved_copy)); |
1505 | } else | |
1506 | #endif | |
1507 | { | |
14977893 | 1508 | |
ed252734 | 1509 | rx->subbeg = savepvn(t, strend - t); |
f8c7b90f | 1510 | #ifdef PERL_OLD_COPY_ON_WRITE |
a0714e2c | 1511 | rx->saved_copy = NULL; |
ed252734 NC |
1512 | #endif |
1513 | } | |
14977893 JH |
1514 | rx->sublen = strend - t; |
1515 | RX_MATCH_COPIED_on(rx); | |
1516 | off = rx->startp[0] = s - t; | |
1517 | rx->endp[0] = off + rx->minlen; | |
1518 | } | |
1519 | else { /* startp/endp are used by @- @+. */ | |
1520 | rx->startp[0] = s - truebase; | |
1521 | rx->endp[0] = s - truebase + rx->minlen; | |
1522 | } | |
2d862feb | 1523 | rx->nparens = rx->lastparen = rx->lastcloseparen = 0; /* used by @-, @+, and $^N */ |
4633a7c4 | 1524 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1525 | RETPUSHYES; |
1526 | ||
1527 | nope: | |
a0d0e21e | 1528 | ret_no: |
d65afb4b | 1529 | if (global && !(dynpm->op_pmflags & PMf_CONTINUE)) { |
a0d0e21e | 1530 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
6136c704 | 1531 | MAGIC* const mg = mg_find(TARG, PERL_MAGIC_regex_global); |
a0d0e21e | 1532 | if (mg) |
565764a8 | 1533 | mg->mg_len = -1; |
a0d0e21e LW |
1534 | } |
1535 | } | |
4633a7c4 | 1536 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
1537 | if (gimme == G_ARRAY) |
1538 | RETURN; | |
1539 | RETPUSHNO; | |
1540 | } | |
1541 | ||
1542 | OP * | |
864dbfa3 | 1543 | Perl_do_readline(pTHX) |
a0d0e21e | 1544 | { |
27da23d5 | 1545 | dVAR; dSP; dTARGETSTACKED; |
a0d0e21e LW |
1546 | register SV *sv; |
1547 | STRLEN tmplen = 0; | |
1548 | STRLEN offset; | |
760ac839 | 1549 | PerlIO *fp; |
a3b680e6 AL |
1550 | register IO * const io = GvIO(PL_last_in_gv); |
1551 | register const I32 type = PL_op->op_type; | |
1552 | const I32 gimme = GIMME_V; | |
a0d0e21e | 1553 | |
6136c704 AL |
1554 | if (io) { |
1555 | MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar); | |
1556 | if (mg) { | |
1557 | PUSHMARK(SP); | |
1558 | XPUSHs(SvTIED_obj((SV*)io, mg)); | |
1559 | PUTBACK; | |
1560 | ENTER; | |
1561 | call_method("READLINE", gimme); | |
1562 | LEAVE; | |
1563 | SPAGAIN; | |
1564 | if (gimme == G_SCALAR) { | |
1565 | SV* const result = POPs; | |
1566 | SvSetSV_nosteal(TARG, result); | |
1567 | PUSHTARG; | |
1568 | } | |
1569 | RETURN; | |
0b7c7b4f | 1570 | } |
e79b0511 | 1571 | } |
4608196e | 1572 | fp = NULL; |
a0d0e21e LW |
1573 | if (io) { |
1574 | fp = IoIFP(io); | |
1575 | if (!fp) { | |
1576 | if (IoFLAGS(io) & IOf_ARGV) { | |
1577 | if (IoFLAGS(io) & IOf_START) { | |
a0d0e21e | 1578 | IoLINES(io) = 0; |
3280af22 | 1579 | if (av_len(GvAVn(PL_last_in_gv)) < 0) { |
1d7c1841 | 1580 | IoFLAGS(io) &= ~IOf_START; |
4608196e | 1581 | do_open(PL_last_in_gv,"-",1,FALSE,O_RDONLY,0,NULL); |
c69033f2 | 1582 | sv_setpvn(GvSVn(PL_last_in_gv), "-", 1); |
3280af22 | 1583 | SvSETMAGIC(GvSV(PL_last_in_gv)); |
a2008d6d GS |
1584 | fp = IoIFP(io); |
1585 | goto have_fp; | |
a0d0e21e LW |
1586 | } |
1587 | } | |
3280af22 | 1588 | fp = nextargv(PL_last_in_gv); |
a0d0e21e | 1589 | if (!fp) { /* Note: fp != IoIFP(io) */ |
3280af22 | 1590 | (void)do_close(PL_last_in_gv, FALSE); /* now it does*/ |
a0d0e21e LW |
1591 | } |
1592 | } | |
0d44d22b NC |
1593 | else if (type == OP_GLOB) |
1594 | fp = Perl_start_glob(aTHX_ POPs, io); | |
a0d0e21e LW |
1595 | } |
1596 | else if (type == OP_GLOB) | |
1597 | SP--; | |
a00b5bd3 | 1598 | else if (ckWARN(WARN_IO) && IoTYPE(io) == IoTYPE_WRONLY) { |
4c80c0b2 | 1599 | report_evil_fh(PL_last_in_gv, io, OP_phoney_OUTPUT_ONLY); |
a00b5bd3 | 1600 | } |
a0d0e21e LW |
1601 | } |
1602 | if (!fp) { | |
041457d9 DM |
1603 | if ((!io || !(IoFLAGS(io) & IOf_START)) |
1604 | && ckWARN2(WARN_GLOB, WARN_CLOSED)) | |
1605 | { | |
3f4520fe | 1606 | if (type == OP_GLOB) |
9014280d | 1607 | Perl_warner(aTHX_ packWARN(WARN_GLOB), |
af8c498a GS |
1608 | "glob failed (can't start child: %s)", |
1609 | Strerror(errno)); | |
69282e91 | 1610 | else |
bc37a18f | 1611 | report_evil_fh(PL_last_in_gv, io, PL_op->op_type); |
3f4520fe | 1612 | } |
54310121 | 1613 | if (gimme == G_SCALAR) { |
79628082 | 1614 | /* undef TARG, and push that undefined value */ |
ba92458f AE |
1615 | if (type != OP_RCATLINE) { |
1616 | SV_CHECK_THINKFIRST_COW_DROP(TARG); | |
0c34ef67 | 1617 | SvOK_off(TARG); |
ba92458f | 1618 | } |
a0d0e21e LW |
1619 | PUSHTARG; |
1620 | } | |
1621 | RETURN; | |
1622 | } | |
a2008d6d | 1623 | have_fp: |
54310121 | 1624 | if (gimme == G_SCALAR) { |
a0d0e21e | 1625 | sv = TARG; |
9607fc9c | 1626 | if (SvROK(sv)) |
1627 | sv_unref(sv); | |
f7877b28 NC |
1628 | else if (isGV_with_GP(sv)) { |
1629 | SvPV_force_nolen(sv); | |
1630 | } | |
862a34c6 | 1631 | SvUPGRADE(sv, SVt_PV); |
a0d0e21e | 1632 | tmplen = SvLEN(sv); /* remember if already alloced */ |
bc44a8a2 | 1633 | if (!tmplen && !SvREADONLY(sv)) |
a0d0e21e | 1634 | Sv_Grow(sv, 80); /* try short-buffering it */ |
2b5e58c4 AMS |
1635 | offset = 0; |
1636 | if (type == OP_RCATLINE && SvOK(sv)) { | |
1637 | if (!SvPOK(sv)) { | |
8b6b16e7 | 1638 | SvPV_force_nolen(sv); |
2b5e58c4 | 1639 | } |
a0d0e21e | 1640 | offset = SvCUR(sv); |
2b5e58c4 | 1641 | } |
a0d0e21e | 1642 | } |
54310121 | 1643 | else { |
561b68a9 | 1644 | sv = sv_2mortal(newSV(80)); |
54310121 | 1645 | offset = 0; |
1646 | } | |
fbad3eb5 | 1647 | |
3887d568 AP |
1648 | /* This should not be marked tainted if the fp is marked clean */ |
1649 | #define MAYBE_TAINT_LINE(io, sv) \ | |
1650 | if (!(IoFLAGS(io) & IOf_UNTAINT)) { \ | |
1651 | TAINT; \ | |
1652 | SvTAINTED_on(sv); \ | |
1653 | } | |
1654 | ||
684bef36 | 1655 | /* delay EOF state for a snarfed empty file */ |
fbad3eb5 | 1656 | #define SNARF_EOF(gimme,rs,io,sv) \ |
684bef36 | 1657 | (gimme != G_SCALAR || SvCUR(sv) \ |
b9fee9ba | 1658 | || (IoFLAGS(io) & IOf_NOLINE) || !RsSNARF(rs)) |
fbad3eb5 | 1659 | |
a0d0e21e | 1660 | for (;;) { |
09e8efcc | 1661 | PUTBACK; |
fbad3eb5 | 1662 | if (!sv_gets(sv, fp, offset) |
2d726892 TF |
1663 | && (type == OP_GLOB |
1664 | || SNARF_EOF(gimme, PL_rs, io, sv) | |
1665 | || PerlIO_error(fp))) | |
fbad3eb5 | 1666 | { |
760ac839 | 1667 | PerlIO_clearerr(fp); |
a0d0e21e | 1668 | if (IoFLAGS(io) & IOf_ARGV) { |
3280af22 | 1669 | fp = nextargv(PL_last_in_gv); |
a0d0e21e LW |
1670 | if (fp) |
1671 | continue; | |
3280af22 | 1672 | (void)do_close(PL_last_in_gv, FALSE); |
a0d0e21e LW |
1673 | } |
1674 | else if (type == OP_GLOB) { | |
e476b1b5 | 1675 | if (!do_close(PL_last_in_gv, FALSE) && ckWARN(WARN_GLOB)) { |
9014280d | 1676 | Perl_warner(aTHX_ packWARN(WARN_GLOB), |
4eb79ab5 | 1677 | "glob failed (child exited with status %d%s)", |
894356b3 | 1678 | (int)(STATUS_CURRENT >> 8), |
cf494569 | 1679 | (STATUS_CURRENT & 0x80) ? ", core dumped" : ""); |
4eb79ab5 | 1680 | } |
a0d0e21e | 1681 | } |
54310121 | 1682 | if (gimme == G_SCALAR) { |
ba92458f AE |
1683 | if (type != OP_RCATLINE) { |
1684 | SV_CHECK_THINKFIRST_COW_DROP(TARG); | |
0c34ef67 | 1685 | SvOK_off(TARG); |
ba92458f | 1686 | } |
09e8efcc | 1687 | SPAGAIN; |
a0d0e21e LW |
1688 | PUSHTARG; |
1689 | } | |
3887d568 | 1690 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e LW |
1691 | RETURN; |
1692 | } | |
3887d568 | 1693 | MAYBE_TAINT_LINE(io, sv); |
a0d0e21e | 1694 | IoLINES(io)++; |
b9fee9ba | 1695 | IoFLAGS(io) |= IOf_NOLINE; |
71be2cbc | 1696 | SvSETMAGIC(sv); |
09e8efcc | 1697 | SPAGAIN; |
a0d0e21e | 1698 | XPUSHs(sv); |
a0d0e21e | 1699 | if (type == OP_GLOB) { |
349d4f2f | 1700 | const char *t1; |
a0d0e21e | 1701 | |
3280af22 | 1702 | if (SvCUR(sv) > 0 && SvCUR(PL_rs) > 0) { |
6136c704 | 1703 | char * const tmps = SvEND(sv) - 1; |
aa07b2f6 | 1704 | if (*tmps == *SvPVX_const(PL_rs)) { |
c07a80fd | 1705 | *tmps = '\0'; |
b162af07 | 1706 | SvCUR_set(sv, SvCUR(sv) - 1); |
c07a80fd | 1707 | } |
1708 | } | |
349d4f2f NC |
1709 | for (t1 = SvPVX_const(sv); *t1; t1++) |
1710 | if (!isALPHA(*t1) && !isDIGIT(*t1) && | |
1711 | strchr("$&*(){}[]'\";\\|?<>~`", *t1)) | |
a0d0e21e | 1712 | break; |
349d4f2f | 1713 | if (*t1 && PerlLIO_lstat(SvPVX_const(sv), &PL_statbuf) < 0) { |
a0d0e21e LW |
1714 | (void)POPs; /* Unmatched wildcard? Chuck it... */ |
1715 | continue; | |
1716 | } | |
2d79bf7f | 1717 | } else if (SvUTF8(sv)) { /* OP_READLINE, OP_RCATLINE */ |
d4c19fe8 AL |
1718 | if (ckWARN(WARN_UTF8)) { |
1719 | const U8 * const s = (const U8*)SvPVX_const(sv) + offset; | |
1720 | const STRLEN len = SvCUR(sv) - offset; | |
1721 | const U8 *f; | |
1722 | ||
1723 | if (!is_utf8_string_loc(s, len, &f)) | |
1724 | /* Emulate :encoding(utf8) warning in the same case. */ | |
1725 | Perl_warner(aTHX_ packWARN(WARN_UTF8), | |
1726 | "utf8 \"\\x%02X\" does not map to Unicode", | |
1727 | f < (U8*)SvEND(sv) ? *f : 0); | |
1728 | } | |
a0d0e21e | 1729 | } |
54310121 | 1730 | if (gimme == G_ARRAY) { |
a0d0e21e | 1731 | if (SvLEN(sv) - SvCUR(sv) > 20) { |
1da4ca5f | 1732 | SvPV_shrink_to_cur(sv); |
a0d0e21e | 1733 | } |
561b68a9 | 1734 | sv = sv_2mortal(newSV(80)); |
a0d0e21e LW |
1735 | continue; |
1736 | } | |
54310121 | 1737 | else if (gimme == G_SCALAR && !tmplen && SvLEN(sv) - SvCUR(sv) > 80) { |
a0d0e21e | 1738 | /* try to reclaim a bit of scalar space (only on 1st alloc) */ |
d5b5861b NC |
1739 | const STRLEN new_len |
1740 | = SvCUR(sv) < 60 ? 80 : SvCUR(sv)+40; /* allow some slop */ | |
1da4ca5f | 1741 | SvPV_renew(sv, new_len); |
a0d0e21e LW |
1742 | } |
1743 | RETURN; | |
1744 | } | |
1745 | } | |
1746 | ||
1747 | PP(pp_enter) | |
1748 | { | |
27da23d5 | 1749 | dVAR; dSP; |
c09156bb | 1750 | register PERL_CONTEXT *cx; |
533c011a | 1751 | I32 gimme = OP_GIMME(PL_op, -1); |
a0d0e21e | 1752 | |
54310121 | 1753 | if (gimme == -1) { |
1754 | if (cxstack_ix >= 0) | |
1755 | gimme = cxstack[cxstack_ix].blk_gimme; | |
1756 | else | |
1757 | gimme = G_SCALAR; | |
1758 | } | |
a0d0e21e LW |
1759 | |
1760 | ENTER; | |
1761 | ||
1762 | SAVETMPS; | |
924508f0 | 1763 | PUSHBLOCK(cx, CXt_BLOCK, SP); |
a0d0e21e LW |
1764 | |
1765 | RETURN; | |
1766 | } | |
1767 | ||
1768 | PP(pp_helem) | |
1769 | { | |
97aff369 | 1770 | dVAR; dSP; |
760ac839 | 1771 | HE* he; |
ae77835f | 1772 | SV **svp; |
c445ea15 AL |
1773 | SV * const keysv = POPs; |
1774 | HV * const hv = (HV*)POPs; | |
a3b680e6 AL |
1775 | const U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
1776 | const U32 defer = PL_op->op_private & OPpLVAL_DEFER; | |
be6c24e0 | 1777 | SV *sv; |
c158a4fd | 1778 | const U32 hash = (SvIsCOW_shared_hash(keysv)) ? SvSHARED_HASH(keysv) : 0; |
9c5ffd7c | 1779 | I32 preeminent = 0; |
a0d0e21e | 1780 | |
d4c19fe8 | 1781 | if (SvTYPE(hv) != SVt_PVHV) |
a0d0e21e | 1782 | RETPUSHUNDEF; |
d4c19fe8 AL |
1783 | |
1784 | if (PL_op->op_private & OPpLVAL_INTRO) { | |
1785 | MAGIC *mg; | |
1786 | HV *stash; | |
1787 | /* does the element we're localizing already exist? */ | |
1788 | preeminent = /* can we determine whether it exists? */ | |
1789 | ( !SvRMAGICAL(hv) | |
1790 | || mg_find((SV*)hv, PERL_MAGIC_env) | |
1791 | || ( (mg = mg_find((SV*)hv, PERL_MAGIC_tied)) | |
1792 | /* Try to preserve the existenceness of a tied hash | |
1793 | * element by using EXISTS and DELETE if possible. | |
1794 | * Fallback to FETCH and STORE otherwise */ | |
1795 | && (stash = SvSTASH(SvRV(SvTIED_obj((SV*)hv, mg)))) | |
1796 | && gv_fetchmethod_autoload(stash, "EXISTS", TRUE) | |
1797 | && gv_fetchmethod_autoload(stash, "DELETE", TRUE) | |
1798 | ) | |
1799 | ) ? hv_exists_ent(hv, keysv, 0) : 1; | |
1800 | } | |
1801 | he = hv_fetch_ent(hv, keysv, lval && !defer, hash); | |
1802 | svp = he ? &HeVAL(he) : NULL; | |
a0d0e21e | 1803 | if (lval) { |
3280af22 | 1804 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 | 1805 | SV* lv; |
1806 | SV* key2; | |
2d8e6c8d | 1807 | if (!defer) { |
ce5030a2 | 1808 | DIE(aTHX_ PL_no_helem_sv, keysv); |
2d8e6c8d | 1809 | } |
68dc0745 | 1810 | lv = sv_newmortal(); |
1811 | sv_upgrade(lv, SVt_PVLV); | |
1812 | LvTYPE(lv) = 'y'; | |
6136c704 | 1813 | sv_magic(lv, key2 = newSVsv(keysv), PERL_MAGIC_defelem, NULL, 0); |
68dc0745 | 1814 | SvREFCNT_dec(key2); /* sv_magic() increments refcount */ |
b37c2d43 | 1815 | LvTARG(lv) = SvREFCNT_inc_simple(hv); |
68dc0745 | 1816 | LvTARGLEN(lv) = 1; |
1817 | PUSHs(lv); | |
1818 | RETURN; | |
1819 | } | |
533c011a | 1820 | if (PL_op->op_private & OPpLVAL_INTRO) { |
bfcb3514 | 1821 | if (HvNAME_get(hv) && isGV(*svp)) |
533c011a | 1822 | save_gp((GV*)*svp, !(PL_op->op_flags & OPf_SPECIAL)); |
1f5346dc SC |
1823 | else { |
1824 | if (!preeminent) { | |
1825 | STRLEN keylen; | |
e62f0680 | 1826 | const char * const key = SvPV_const(keysv, keylen); |
7d654f43 NC |
1827 | SAVEDELETE(hv, savepvn(key,keylen), |
1828 | SvUTF8(keysv) ? -(I32)keylen : keylen); | |
bfc4de9f | 1829 | } else |
1f5346dc SC |
1830 | save_helem(hv, keysv, svp); |
1831 | } | |
5f05dabc | 1832 | } |
533c011a NIS |
1833 | else if (PL_op->op_private & OPpDEREF) |
1834 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); | |
a0d0e21e | 1835 | } |
3280af22 | 1836 | sv = (svp ? *svp : &PL_sv_undef); |
be6c24e0 GS |
1837 | /* This makes C<local $tied{foo} = $tied{foo}> possible. |
1838 | * Pushing the magical RHS on to the stack is useless, since | |
1839 | * that magic is soon destined to be misled by the local(), | |
1840 | * and thus the later pp_sassign() will fail to mg_get() the | |
1841 | * old value. This should also cure problems with delayed | |
1842 | * mg_get()s. GSAR 98-07-03 */ | |
1843 | if (!lval && SvGMAGICAL(sv)) | |
1844 | sv = sv_mortalcopy(sv); | |
1845 | PUSHs(sv); | |
a0d0e21e LW |
1846 | RETURN; |
1847 | } | |
1848 | ||
1849 | PP(pp_leave) | |
1850 | { | |
27da23d5 | 1851 | dVAR; dSP; |
c09156bb | 1852 | register PERL_CONTEXT *cx; |
a0d0e21e LW |
1853 | SV **newsp; |
1854 | PMOP *newpm; | |
1855 | I32 gimme; | |
1856 | ||
533c011a | 1857 | if (PL_op->op_flags & OPf_SPECIAL) { |
a0d0e21e | 1858 | cx = &cxstack[cxstack_ix]; |
3280af22 | 1859 | cx->blk_oldpm = PL_curpm; /* fake block should preserve $1 et al */ |
a0d0e21e LW |
1860 | } |
1861 | ||
1862 | POPBLOCK(cx,newpm); | |
1863 | ||
533c011a | 1864 | gimme = OP_GIMME(PL_op, -1); |
54310121 | 1865 | if (gimme == -1) { |
1866 | if (cxstack_ix >= 0) | |
1867 | gimme = cxstack[cxstack_ix].blk_gimme; | |
1868 | else | |
1869 | gimme = G_SCALAR; | |
1870 | } | |
a0d0e21e | 1871 | |
a1f49e72 | 1872 | TAINT_NOT; |
54310121 | 1873 | if (gimme == G_VOID) |
1874 | SP = newsp; | |
1875 | else if (gimme == G_SCALAR) { | |
a3b680e6 | 1876 | register SV **mark; |
54310121 | 1877 | MARK = newsp + 1; |
09256e2f | 1878 | if (MARK <= SP) { |
54310121 | 1879 | if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP)) |
1880 | *MARK = TOPs; | |
1881 | else | |
1882 | *MARK = sv_mortalcopy(TOPs); | |
09256e2f | 1883 | } else { |
54310121 | 1884 | MEXTEND(mark,0); |
3280af22 | 1885 | *MARK = &PL_sv_undef; |
a0d0e21e | 1886 | } |
54310121 | 1887 | SP = MARK; |
a0d0e21e | 1888 | } |
54310121 | 1889 | else if (gimme == G_ARRAY) { |
a1f49e72 | 1890 | /* in case LEAVE wipes old return values */ |
a3b680e6 | 1891 | register SV **mark; |
a1f49e72 CS |
1892 | for (mark = newsp + 1; mark <= SP; mark++) { |
1893 | if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP))) { | |
a0d0e21e | 1894 | *mark = sv_mortalcopy(*mark); |
a1f49e72 CS |
1895 | TAINT_NOT; /* Each item is independent */ |
1896 | } | |
1897 | } | |
a0d0e21e | 1898 | } |
3280af22 | 1899 | PL_curpm = newpm; /* Don't pop $1 et al till now */ |
a0d0e21e LW |
1900 | |
1901 | LEAVE; | |
1902 | ||
1903 | RETURN; | |
1904 | } | |
1905 | ||
1906 | PP(pp_iter) | |
1907 | { | |
97aff369 | 1908 | dVAR; dSP; |
c09156bb | 1909 | register PERL_CONTEXT *cx; |
dc09a129 | 1910 | SV *sv, *oldsv; |
4633a7c4 | 1911 | AV* av; |
1d7c1841 | 1912 | SV **itersvp; |
a0d0e21e | 1913 | |
924508f0 | 1914 | EXTEND(SP, 1); |
a0d0e21e | 1915 | cx = &cxstack[cxstack_ix]; |
6b35e009 | 1916 | if (CxTYPE(cx) != CXt_LOOP) |
cea2e8a9 | 1917 | DIE(aTHX_ "panic: pp_iter"); |
a0d0e21e | 1918 | |
1d7c1841 | 1919 | itersvp = CxITERVAR(cx); |
4633a7c4 | 1920 | av = cx->blk_loop.iterary; |
89ea2908 GA |
1921 | if (SvTYPE(av) != SVt_PVAV) { |
1922 | /* iterate ($min .. $max) */ | |
1923 | if (cx->blk_loop.iterlval) { | |
1924 | /* string increment */ | |
1925 | register SV* cur = cx->blk_loop.iterlval; | |
4fe3f0fa | 1926 | STRLEN maxlen = 0; |
83003860 | 1927 | const char *max = SvOK((SV*)av) ? SvPV_const((SV*)av, maxlen) : ""; |
89ea2908 | 1928 | if (!SvNIOK(cur) && SvCUR(cur) <= maxlen) { |
1d7c1841 | 1929 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
eaa5c2d6 | 1930 | /* safe to reuse old SV */ |
1d7c1841 | 1931 | sv_setsv(*itersvp, cur); |
eaa5c2d6 | 1932 | } |
1c846c1f | 1933 | else |
eaa5c2d6 GA |
1934 | { |
1935 | /* we need a fresh SV every time so that loop body sees a | |
1936 | * completely new SV for closures/references to work as | |
1937 | * they used to */ | |
dc09a129 | 1938 | oldsv = *itersvp; |
1d7c1841 | 1939 | *itersvp = newSVsv(cur); |
dc09a129 | 1940 | SvREFCNT_dec(oldsv); |
eaa5c2d6 | 1941 | } |
aa07b2f6 | 1942 | if (strEQ(SvPVX_const(cur), max)) |
89ea2908 GA |
1943 | sv_setiv(cur, 0); /* terminate next time */ |
1944 | else | |
1945 | sv_inc(cur); | |
1946 | RETPUSHYES; | |
1947 | } | |
1948 | RETPUSHNO; | |
1949 | } | |
1950 | /* integer increment */ | |
1951 | if (cx->blk_loop.iterix > cx->blk_loop.itermax) | |
1952 | RETPUSHNO; | |
7f61b687 | 1953 | |
3db8f154 | 1954 | /* don't risk potential race */ |
1d7c1841 | 1955 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
eaa5c2d6 | 1956 | /* safe to reuse old SV */ |
1d7c1841 | 1957 | sv_setiv(*itersvp, cx->blk_loop.iterix++); |
eaa5c2d6 | 1958 | } |
1c846c1f | 1959 | else |
eaa5c2d6 GA |
1960 | { |
1961 | /* we need a fresh SV every time so that loop body sees a | |
1962 | * completely new SV for closures/references to work as they | |
1963 | * used to */ | |
dc09a129 | 1964 | oldsv = *itersvp; |
1d7c1841 | 1965 | *itersvp = newSViv(cx->blk_loop.iterix++); |
dc09a129 | 1966 | SvREFCNT_dec(oldsv); |
eaa5c2d6 | 1967 | } |
89ea2908 GA |
1968 | RETPUSHYES; |
1969 | } | |
1970 | ||
1971 | /* iterate array */ | |
ef3e5ea9 NC |
1972 | if (PL_op->op_private & OPpITER_REVERSED) { |
1973 | /* In reverse, use itermax as the min :-) */ | |
c491ecac | 1974 | if (cx->blk_loop.iterix <= cx->blk_loop.itermax) |
ef3e5ea9 | 1975 | RETPUSHNO; |
a0d0e21e | 1976 | |
ef3e5ea9 | 1977 | if (SvMAGICAL(av) || AvREIFY(av)) { |
c445ea15 | 1978 | SV * const * const svp = av_fetch(av, --cx->blk_loop.iterix, FALSE); |
a0714e2c | 1979 | sv = svp ? *svp : NULL; |
ef3e5ea9 NC |
1980 | } |
1981 | else { | |
6e585ca0 | 1982 | sv = AvARRAY(av)[--cx->blk_loop.iterix]; |
ef3e5ea9 | 1983 | } |
d42935ef JH |
1984 | } |
1985 | else { | |
ef3e5ea9 NC |
1986 | if (cx->blk_loop.iterix >= (av == PL_curstack ? cx->blk_oldsp : |
1987 | AvFILL(av))) | |
1988 | RETPUSHNO; | |
1989 | ||
1990 | if (SvMAGICAL(av) || AvREIFY(av)) { | |
c445ea15 | 1991 | SV * const * const svp = av_fetch(av, ++cx->blk_loop.iterix, FALSE); |
a0714e2c | 1992 | sv = svp ? *svp : NULL; |
ef3e5ea9 NC |
1993 | } |
1994 | else { | |
1995 | sv = AvARRAY(av)[++cx->blk_loop.iterix]; | |
1996 | } | |
d42935ef | 1997 | } |
ef3e5ea9 | 1998 | |
0565a181 | 1999 | if (sv && SvIS_FREED(sv)) { |
a0714e2c | 2000 | *itersvp = NULL; |
b6c83531 | 2001 | Perl_croak(aTHX_ "Use of freed value in iteration"); |
cccede53 DM |
2002 | } |
2003 | ||
d42935ef | 2004 | if (sv) |
a0d0e21e | 2005 | SvTEMP_off(sv); |
a0d0e21e | 2006 | else |
3280af22 | 2007 | sv = &PL_sv_undef; |
8b530633 | 2008 | if (av != PL_curstack && sv == &PL_sv_undef) { |
5f05dabc | 2009 | SV *lv = cx->blk_loop.iterlval; |
71be2cbc | 2010 | if (lv && SvREFCNT(lv) > 1) { |
2011 | SvREFCNT_dec(lv); | |
a0714e2c | 2012 | lv = NULL; |
71be2cbc | 2013 | } |
5f05dabc | 2014 | if (lv) |
2015 | SvREFCNT_dec(LvTARG(lv)); | |
2016 | else { | |
561b68a9 | 2017 | lv = cx->blk_loop.iterlval = newSV(0); |
5f05dabc | 2018 | sv_upgrade(lv, SVt_PVLV); |
5f05dabc | 2019 | LvTYPE(lv) = 'y'; |
6136c704 | 2020 | sv_magic(lv, NULL, PERL_MAGIC_defelem, NULL, 0); |
5f05dabc | 2021 | } |
b37c2d43 | 2022 | LvTARG(lv) = SvREFCNT_inc_simple(av); |
5f05dabc | 2023 | LvTARGOFF(lv) = cx->blk_loop.iterix; |
42718184 | 2024 | LvTARGLEN(lv) = (STRLEN)UV_MAX; |
5f05dabc | 2025 | sv = (SV*)lv; |
2026 | } | |
a0d0e21e | 2027 | |
dc09a129 | 2028 | oldsv = *itersvp; |
b37c2d43 | 2029 | *itersvp = SvREFCNT_inc_simple_NN(sv); |
dc09a129 DM |
2030 | SvREFCNT_dec(oldsv); |
2031 | ||
a0d0e21e LW |
2032 | RETPUSHYES; |
2033 | } | |
2034 | ||
2035 | PP(pp_subst) | |
2036 | { | |
97aff369 | 2037 | dVAR; dSP; dTARG; |
a0d0e21e LW |
2038 | register PMOP *pm = cPMOP; |
2039 | PMOP *rpm = pm; | |
a0d0e21e LW |
2040 | register char *s; |
2041 | char *strend; | |
2042 | register char *m; | |
5c144d81 | 2043 | const char *c; |
a0d0e21e LW |
2044 | register char *d; |
2045 | STRLEN clen; | |
2046 | I32 iters = 0; | |
2047 | I32 maxiters; | |
2048 | register I32 i; | |
2049 | bool once; | |
71be2cbc | 2050 | bool rxtainted; |
a0d0e21e | 2051 | char *orig; |
22e551b9 | 2052 | I32 r_flags; |
aaa362c4 | 2053 | register REGEXP *rx = PM_GETRE(pm); |
a0d0e21e LW |
2054 | STRLEN len; |
2055 | int force_on_match = 0; | |
0bcc34c2 | 2056 | const I32 oldsave = PL_savestack_ix; |
792b2c16 | 2057 | STRLEN slen; |
f272994b | 2058 | bool doutf8 = FALSE; |
f8c7b90f | 2059 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2060 | bool is_cow; |
2061 | #endif | |
a0714e2c | 2062 | SV *nsv = NULL; |
a0d0e21e | 2063 | |
5cd24f17 | 2064 | /* known replacement string? */ |
b37c2d43 | 2065 | register SV *dstr = (pm->op_pmflags & PMf_CONST) ? POPs : NULL; |
533c011a | 2066 | if (PL_op->op_flags & OPf_STACKED) |
a0d0e21e | 2067 | TARG = POPs; |
59f00321 RGS |
2068 | else if (PL_op->op_private & OPpTARGET_MY) |
2069 | GETTARGET; | |
a0d0e21e | 2070 | else { |
54b9620d | 2071 | TARG = DEFSV; |
a0d0e21e | 2072 | EXTEND(SP,1); |
1c846c1f | 2073 | } |
d9f424b2 | 2074 | |
f8c7b90f | 2075 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2076 | /* Awooga. Awooga. "bool" types that are actually char are dangerous, |
2077 | because they make integers such as 256 "false". */ | |
2078 | is_cow = SvIsCOW(TARG) ? TRUE : FALSE; | |
2079 | #else | |
765f542d NC |
2080 | if (SvIsCOW(TARG)) |
2081 | sv_force_normal_flags(TARG,0); | |
ed252734 NC |
2082 | #endif |
2083 | if ( | |
f8c7b90f | 2084 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2085 | !is_cow && |
2086 | #endif | |
2087 | (SvREADONLY(TARG) | |
4ce457a6 TP |
2088 | || ( (SvTYPE(TARG) == SVt_PVGV || SvTYPE(TARG) > SVt_PVLV) |
2089 | && !(SvTYPE(TARG) == SVt_PVGV && SvFAKE(TARG))))) | |
d470f89e | 2090 | DIE(aTHX_ PL_no_modify); |
8ec5e241 NIS |
2091 | PUTBACK; |
2092 | ||
d5263905 | 2093 | s = SvPV_mutable(TARG, len); |
68dc0745 | 2094 | if (!SvPOKp(TARG) || SvTYPE(TARG) == SVt_PVGV) |
a0d0e21e | 2095 | force_on_match = 1; |
b3eb6a9b | 2096 | rxtainted = ((pm->op_pmdynflags & PMdf_TAINTED) || |
3280af22 NIS |
2097 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
2098 | if (PL_tainted) | |
b3eb6a9b | 2099 | rxtainted |= 2; |
9212bbba | 2100 | TAINT_NOT; |
a12c0f56 | 2101 | |
a30b2f1f | 2102 | RX_MATCH_UTF8_set(rx, DO_UTF8(TARG)); |
d9f424b2 | 2103 | |
a0d0e21e LW |
2104 | force_it: |
2105 | if (!pm || !s) | |
2269b42e | 2106 | DIE(aTHX_ "panic: pp_subst"); |
a0d0e21e LW |
2107 | |
2108 | strend = s + len; | |
a30b2f1f | 2109 | slen = RX_MATCH_UTF8(rx) ? utf8_length((U8*)s, (U8*)strend) : len; |
792b2c16 JH |
2110 | maxiters = 2 * slen + 10; /* We can match twice at each |
2111 | position, once with zero-length, | |
2112 | second time with non-zero. */ | |
a0d0e21e | 2113 | |
3280af22 NIS |
2114 | if (!rx->prelen && PL_curpm) { |
2115 | pm = PL_curpm; | |
aaa362c4 | 2116 | rx = PM_GETRE(pm); |
a0d0e21e | 2117 | } |
0b78c20a JH |
2118 | r_flags = (rx->nparens || SvTEMP(TARG) || PL_sawampersand |
2119 | || (pm->op_pmflags & PMf_EVAL)) | |
ed252734 | 2120 | ? REXEC_COPY_STR : 0; |
f722798b | 2121 | if (SvSCREAM(TARG)) |
22e551b9 | 2122 | r_flags |= REXEC_SCREAM; |
7fba1cd6 | 2123 | |
a0d0e21e | 2124 | orig = m = s; |
f722798b | 2125 | if (rx->reganch & RE_USE_INTUIT) { |
ee0b7718 | 2126 | PL_bostr = orig; |
f722798b IZ |
2127 | s = CALLREG_INTUIT_START(aTHX_ rx, TARG, s, strend, r_flags, NULL); |
2128 | ||
2129 | if (!s) | |
2130 | goto nope; | |
2131 | /* How to do it in subst? */ | |
2132 | /* if ( (rx->reganch & ROPT_CHECK_ALL) | |
1c846c1f | 2133 | && !PL_sawampersand |
f722798b IZ |
2134 | && ((rx->reganch & ROPT_NOSCAN) |
2135 | || !((rx->reganch & RE_INTUIT_TAIL) | |
2136 | && (r_flags & REXEC_SCREAM)))) | |
2137 | goto yup; | |
2138 | */ | |
a0d0e21e | 2139 | } |
71be2cbc | 2140 | |
2141 | /* only replace once? */ | |
a0d0e21e | 2142 | once = !(rpm->op_pmflags & PMf_GLOBAL); |
71be2cbc | 2143 | |
2144 | /* known replacement string? */ | |
f272994b | 2145 | if (dstr) { |
8514a05a JH |
2146 | /* replacement needing upgrading? */ |
2147 | if (DO_UTF8(TARG) && !doutf8) { | |
db79b45b | 2148 | nsv = sv_newmortal(); |
4a176938 | 2149 | SvSetSV(nsv, dstr); |
8514a05a JH |
2150 | if (PL_encoding) |
2151 | sv_recode_to_utf8(nsv, PL_encoding); | |
2152 | else | |
2153 | sv_utf8_upgrade(nsv); | |
5c144d81 | 2154 | c = SvPV_const(nsv, clen); |
4a176938 JH |
2155 | doutf8 = TRUE; |
2156 | } | |
2157 | else { | |
5c144d81 | 2158 | c = SvPV_const(dstr, clen); |
4a176938 | 2159 | doutf8 = DO_UTF8(dstr); |
8514a05a | 2160 | } |
f272994b A |
2161 | } |
2162 | else { | |
6136c704 | 2163 | c = NULL; |
f272994b A |
2164 | doutf8 = FALSE; |
2165 | } | |
2166 | ||
71be2cbc | 2167 | /* can do inplace substitution? */ |
ed252734 | 2168 | if (c |
f8c7b90f | 2169 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2170 | && !is_cow |
2171 | #endif | |
2172 | && (I32)clen <= rx->minlen && (once || !(r_flags & REXEC_COPY_STR)) | |
db79b45b JH |
2173 | && !(rx->reganch & ROPT_LOOKBEHIND_SEEN) |
2174 | && (!doutf8 || SvUTF8(TARG))) { | |
f722798b IZ |
2175 | if (!CALLREGEXEC(aTHX_ rx, s, strend, orig, 0, TARG, NULL, |
2176 | r_flags | REXEC_CHECKED)) | |
2177 | { | |
8ec5e241 | 2178 | SPAGAIN; |
3280af22 | 2179 | PUSHs(&PL_sv_no); |
71be2cbc | 2180 | LEAVE_SCOPE(oldsave); |
2181 | RETURN; | |
2182 | } | |
f8c7b90f | 2183 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2184 | if (SvIsCOW(TARG)) { |
2185 | assert (!force_on_match); | |
2186 | goto have_a_cow; | |
2187 | } | |
2188 | #endif | |
71be2cbc | 2189 | if (force_on_match) { |
2190 | force_on_match = 0; | |
2191 | s = SvPV_force(TARG, len); | |
2192 | goto force_it; | |
2193 | } | |
71be2cbc | 2194 | d = s; |
3280af22 | 2195 | PL_curpm = pm; |
71be2cbc | 2196 | SvSCREAM_off(TARG); /* disable possible screamer */ |
2197 | if (once) { | |
48c036b1 | 2198 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d IZ |
2199 | m = orig + rx->startp[0]; |
2200 | d = orig + rx->endp[0]; | |
71be2cbc | 2201 | s = orig; |
2202 | if (m - s > strend - d) { /* faster to shorten from end */ | |
2203 | if (clen) { | |
2204 | Copy(c, m, clen, char); | |
2205 | m += clen; | |
a0d0e21e | 2206 | } |
71be2cbc | 2207 | i = strend - d; |
2208 | if (i > 0) { | |
2209 | Move(d, m, i, char); | |
2210 | m += i; | |
a0d0e21e | 2211 | } |
71be2cbc | 2212 | *m = '\0'; |
2213 | SvCUR_set(TARG, m - s); | |
2214 | } | |
155aba94 | 2215 | else if ((i = m - s)) { /* faster from front */ |
71be2cbc | 2216 | d -= clen; |
2217 | m = d; | |
2218 | sv_chop(TARG, d-i); | |
2219 | s += i; | |
2220 | while (i--) | |
2221 | *--d = *--s; | |
2222 | if (clen) | |
2223 | Copy(c, m, clen, char); | |
2224 | } | |
2225 | else if (clen) { | |
2226 | d -= clen; | |
2227 | sv_chop(TARG, d); | |
2228 | Copy(c, d, clen, char); | |
2229 | } | |
2230 | else { | |
2231 | sv_chop(TARG, d); | |
2232 | } | |
48c036b1 | 2233 | TAINT_IF(rxtainted & 1); |
8ec5e241 | 2234 | SPAGAIN; |
3280af22 | 2235 | PUSHs(&PL_sv_yes); |
71be2cbc | 2236 | } |
2237 | else { | |
71be2cbc | 2238 | do { |
2239 | if (iters++ > maxiters) | |
cea2e8a9 | 2240 | DIE(aTHX_ "Substitution loop"); |
d9f97599 | 2241 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d | 2242 | m = rx->startp[0] + orig; |
155aba94 | 2243 | if ((i = m - s)) { |
71be2cbc | 2244 | if (s != d) |
2245 | Move(s, d, i, char); | |
2246 | d += i; | |
a0d0e21e | 2247 | } |
71be2cbc | 2248 | if (clen) { |
2249 | Copy(c, d, clen, char); | |
2250 | d += clen; | |
2251 | } | |
cf93c79d | 2252 | s = rx->endp[0] + orig; |
cea2e8a9 | 2253 | } while (CALLREGEXEC(aTHX_ rx, s, strend, orig, s == m, |
f722798b IZ |
2254 | TARG, NULL, |
2255 | /* don't match same null twice */ | |
2256 | REXEC_NOT_FIRST|REXEC_IGNOREPOS)); | |
71be2cbc | 2257 | if (s != d) { |
2258 | i = strend - s; | |
aa07b2f6 | 2259 | SvCUR_set(TARG, d - SvPVX_const(TARG) + i); |
71be2cbc | 2260 | Move(s, d, i+1, char); /* include the NUL */ |
a0d0e21e | 2261 | } |
48c036b1 | 2262 | TAINT_IF(rxtainted & 1); |
8ec5e241 | 2263 | SPAGAIN; |
71be2cbc | 2264 | PUSHs(sv_2mortal(newSViv((I32)iters))); |
a0d0e21e | 2265 | } |
80b498e0 | 2266 | (void)SvPOK_only_UTF8(TARG); |
48c036b1 | 2267 | TAINT_IF(rxtainted); |
8ec5e241 NIS |
2268 | if (SvSMAGICAL(TARG)) { |
2269 | PUTBACK; | |
2270 | mg_set(TARG); | |
2271 | SPAGAIN; | |
2272 | } | |
9212bbba | 2273 | SvTAINT(TARG); |
aefe6dfc JH |
2274 | if (doutf8) |
2275 | SvUTF8_on(TARG); | |
71be2cbc | 2276 | LEAVE_SCOPE(oldsave); |
2277 | RETURN; | |
a0d0e21e | 2278 | } |
71be2cbc | 2279 | |
f722798b IZ |
2280 | if (CALLREGEXEC(aTHX_ rx, s, strend, orig, 0, TARG, NULL, |
2281 | r_flags | REXEC_CHECKED)) | |
2282 | { | |
a0d0e21e LW |
2283 | if (force_on_match) { |
2284 | force_on_match = 0; | |
2285 | s = SvPV_force(TARG, len); | |
2286 | goto force_it; | |
2287 | } | |
f8c7b90f | 2288 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2289 | have_a_cow: |
2290 | #endif | |
48c036b1 | 2291 | rxtainted |= RX_MATCH_TAINTED(rx); |
f2b990bf | 2292 | dstr = newSVpvn(m, s-m); |
ffc61ed2 JH |
2293 | if (DO_UTF8(TARG)) |
2294 | SvUTF8_on(dstr); | |
3280af22 | 2295 | PL_curpm = pm; |
a0d0e21e | 2296 | if (!c) { |
c09156bb | 2297 | register PERL_CONTEXT *cx; |
8ec5e241 | 2298 | SPAGAIN; |
454f1e26 | 2299 | (void)ReREFCNT_inc(rx); |
a0d0e21e LW |
2300 | PUSHSUBST(cx); |
2301 | RETURNOP(cPMOP->op_pmreplroot); | |
2302 | } | |
cf93c79d | 2303 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
a0d0e21e LW |
2304 | do { |
2305 | if (iters++ > maxiters) | |
cea2e8a9 | 2306 | DIE(aTHX_ "Substitution loop"); |
d9f97599 | 2307 | rxtainted |= RX_MATCH_TAINTED(rx); |
cf93c79d | 2308 | if (RX_MATCH_COPIED(rx) && rx->subbeg != orig) { |
a0d0e21e LW |
2309 | m = s; |
2310 | s = orig; | |
cf93c79d | 2311 | orig = rx->subbeg; |
a0d0e21e LW |
2312 | s = orig + (m - s); |
2313 | strend = s + (strend - m); | |
2314 | } | |
cf93c79d | 2315 | m = rx->startp[0] + orig; |
db79b45b JH |
2316 | if (doutf8 && !SvUTF8(dstr)) |
2317 | sv_catpvn_utf8_upgrade(dstr, s, m - s, nsv); | |
2318 | else | |
2319 | sv_catpvn(dstr, s, m-s); | |
cf93c79d | 2320 | s = rx->endp[0] + orig; |
a0d0e21e LW |
2321 | if (clen) |
2322 | sv_catpvn(dstr, c, clen); | |
2323 | if (once) | |
2324 | break; | |
ffc61ed2 JH |
2325 | } while (CALLREGEXEC(aTHX_ rx, s, strend, orig, s == m, |
2326 | TARG, NULL, r_flags)); | |
db79b45b JH |
2327 | if (doutf8 && !DO_UTF8(TARG)) |
2328 | sv_catpvn_utf8_upgrade(dstr, s, strend - s, nsv); | |
89afcb60 A |
2329 | else |
2330 | sv_catpvn(dstr, s, strend - s); | |
748a9306 | 2331 | |
f8c7b90f | 2332 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
2333 | /* The match may make the string COW. If so, brilliant, because that's |
2334 | just saved us one malloc, copy and free - the regexp has donated | |
2335 | the old buffer, and we malloc an entirely new one, rather than the | |
2336 | regexp malloc()ing a buffer and copying our original, only for | |
2337 | us to throw it away here during the substitution. */ | |
2338 | if (SvIsCOW(TARG)) { | |
2339 | sv_force_normal_flags(TARG, SV_COW_DROP_PV); | |
2340 | } else | |
2341 | #endif | |
2342 | { | |
8bd4d4c5 | 2343 | SvPV_free(TARG); |
ed252734 | 2344 | } |
f880fe2f | 2345 | SvPV_set(TARG, SvPVX(dstr)); |
748a9306 LW |
2346 | SvCUR_set(TARG, SvCUR(dstr)); |
2347 | SvLEN_set(TARG, SvLEN(dstr)); | |
f272994b | 2348 | doutf8 |= DO_UTF8(dstr); |
6136c704 | 2349 | SvPV_set(dstr, NULL); |
748a9306 LW |
2350 | sv_free(dstr); |
2351 | ||
48c036b1 | 2352 | TAINT_IF(rxtainted & 1); |
f878fbec | 2353 | SPAGAIN; |
48c036b1 GS |
2354 | PUSHs(sv_2mortal(newSViv((I32)iters))); |
2355 | ||
a0d0e21e | 2356 | (void)SvPOK_only(TARG); |
f272994b | 2357 | if (doutf8) |
60aeb6fd | 2358 | SvUTF8_on(TARG); |
48c036b1 | 2359 | TAINT_IF(rxtainted); |
a0d0e21e | 2360 | SvSETMAGIC(TARG); |
9212bbba | 2361 | SvTAINT(TARG); |
4633a7c4 | 2362 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
2363 | RETURN; |
2364 | } | |
5cd24f17 | 2365 | goto ret_no; |
a0d0e21e LW |
2366 | |
2367 | nope: | |
1c846c1f | 2368 | ret_no: |
8ec5e241 | 2369 | SPAGAIN; |
3280af22 | 2370 | PUSHs(&PL_sv_no); |
4633a7c4 | 2371 | LEAVE_SCOPE(oldsave); |
a0d0e21e LW |
2372 | RETURN; |
2373 | } | |
2374 | ||
2375 | PP(pp_grepwhile) | |
2376 | { | |
27da23d5 | 2377 | dVAR; dSP; |
a0d0e21e LW |
2378 | |
2379 | if (SvTRUEx(POPs)) | |
3280af22 NIS |
2380 | PL_stack_base[PL_markstack_ptr[-1]++] = PL_stack_base[*PL_markstack_ptr]; |
2381 | ++*PL_markstack_ptr; | |
a0d0e21e LW |
2382 | LEAVE; /* exit inner scope */ |
2383 | ||
2384 | /* All done yet? */ | |
3280af22 | 2385 | if (PL_stack_base + *PL_markstack_ptr > SP) { |
a0d0e21e | 2386 | I32 items; |
c4420975 | 2387 | const I32 gimme = GIMME_V; |
a0d0e21e LW |
2388 | |
2389 | LEAVE; /* exit outer scope */ | |
2390 | (void)POPMARK; /* pop src */ | |
3280af22 | 2391 | items = --*PL_markstack_ptr - PL_markstack_ptr[-1]; |
a0d0e21e | 2392 | (void)POPMARK; /* pop dst */ |
3280af22 | 2393 | SP = PL_stack_base + POPMARK; /* pop original mark */ |
54310121 | 2394 | if (gimme == G_SCALAR) { |
7cc47870 | 2395 | if (PL_op->op_private & OPpGREP_LEX) { |
c4420975 | 2396 | SV* const sv = sv_newmortal(); |
7cc47870 RGS |
2397 | sv_setiv(sv, items); |
2398 | PUSHs(sv); | |
2399 | } | |
2400 | else { | |
2401 | dTARGET; | |
2402 | XPUSHi(items); | |
2403 | } | |
a0d0e21e | 2404 | } |
54310121 | 2405 | else if (gimme == G_ARRAY) |
2406 | SP += items; | |
a0d0e21e LW |
2407 | RETURN; |
2408 | } | |
2409 | else { | |
2410 | SV *src; | |
2411 | ||
2412 | ENTER; /* enter inner scope */ | |
1d7c1841 | 2413 | SAVEVPTR(PL_curpm); |
a0d0e21e | 2414 | |
3280af22 | 2415 | src = PL_stack_base[*PL_markstack_ptr]; |
a0d0e21e | 2416 | SvTEMP_off(src); |
59f00321 RGS |
2417 | if (PL_op->op_private & OPpGREP_LEX) |
2418 | PAD_SVl(PL_op->op_targ) = src; | |
2419 | else | |
2420 | DEFSV = src; | |
a0d0e21e LW |
2421 | |
2422 | RETURNOP(cLOGOP->op_other); | |
2423 | } | |
2424 | } | |
2425 | ||
2426 | PP(pp_leavesub) | |
2427 | { | |
27da23d5 | 2428 | dVAR; dSP; |
a0d0e21e LW |
2429 | SV **mark; |
2430 | SV **newsp; | |
2431 | PMOP *newpm; | |
2432 | I32 gimme; | |
c09156bb | 2433 | register PERL_CONTEXT *cx; |
b0d9ce38 | 2434 | SV *sv; |
a0d0e21e | 2435 | |
9850bf21 RH |
2436 | if (CxMULTICALL(&cxstack[cxstack_ix])) |
2437 | return 0; | |
2438 | ||
a0d0e21e | 2439 | POPBLOCK(cx,newpm); |
5dd42e15 | 2440 | cxstack_ix++; /* temporarily protect top context */ |
1c846c1f | 2441 | |
a1f49e72 | 2442 | TAINT_NOT; |
a0d0e21e LW |
2443 | if (gimme == G_SCALAR) { |
2444 | MARK = newsp + 1; | |
a29cdaf0 | 2445 | if (MARK <= SP) { |
a8bba7fa | 2446 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
a29cdaf0 IZ |
2447 | if (SvTEMP(TOPs)) { |
2448 | *MARK = SvREFCNT_inc(TOPs); | |
2449 | FREETMPS; | |
2450 | sv_2mortal(*MARK); | |
cd06dffe GS |
2451 | } |
2452 | else { | |
959e3673 | 2453 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
a29cdaf0 | 2454 | FREETMPS; |
959e3673 GS |
2455 | *MARK = sv_mortalcopy(sv); |
2456 | SvREFCNT_dec(sv); | |
a29cdaf0 | 2457 | } |
cd06dffe GS |
2458 | } |
2459 | else | |
a29cdaf0 | 2460 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); |
cd06dffe GS |
2461 | } |
2462 | else { | |
f86702cc | 2463 | MEXTEND(MARK, 0); |
3280af22 | 2464 | *MARK = &PL_sv_undef; |
a0d0e21e LW |
2465 | } |
2466 | SP = MARK; | |
2467 | } | |
54310121 | 2468 | else if (gimme == G_ARRAY) { |
f86702cc | 2469 | for (MARK = newsp + 1; MARK <= SP; MARK++) { |
a1f49e72 | 2470 | if (!SvTEMP(*MARK)) { |
f86702cc | 2471 | *MARK = sv_mortalcopy(*MARK); |
a1f49e72 CS |
2472 | TAINT_NOT; /* Each item is independent */ |
2473 | } | |
f86702cc | 2474 | } |
a0d0e21e | 2475 | } |
f86702cc | 2476 | PUTBACK; |
1c846c1f | 2477 | |
5dd42e15 DM |
2478 | LEAVE; |
2479 | cxstack_ix--; | |
b0d9ce38 | 2480 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
3280af22 | 2481 | PL_curpm = newpm; /* ... and pop $1 et al */ |
a0d0e21e | 2482 | |
b0d9ce38 | 2483 | LEAVESUB(sv); |
f39bc417 | 2484 | return cx->blk_sub.retop; |
a0d0e21e LW |
2485 | } |
2486 | ||
cd06dffe GS |
2487 | /* This duplicates the above code because the above code must not |
2488 | * get any slower by more conditions */ | |
2489 | PP(pp_leavesublv) | |
2490 | { | |
27da23d5 | 2491 | dVAR; dSP; |
cd06dffe GS |
2492 | SV **mark; |
2493 | SV **newsp; | |
2494 | PMOP *newpm; | |
2495 | I32 gimme; | |
2496 | register PERL_CONTEXT *cx; | |
b0d9ce38 | 2497 | SV *sv; |
cd06dffe | 2498 | |
9850bf21 RH |
2499 | if (CxMULTICALL(&cxstack[cxstack_ix])) |
2500 | return 0; | |
2501 | ||
cd06dffe | 2502 | POPBLOCK(cx,newpm); |
5dd42e15 | 2503 | cxstack_ix++; /* temporarily protect top context */ |
1c846c1f | 2504 | |
cd06dffe GS |
2505 | TAINT_NOT; |
2506 | ||
2507 | if (cx->blk_sub.lval & OPpENTERSUB_INARGS) { | |
2508 | /* We are an argument to a function or grep(). | |
2509 | * This kind of lvalueness was legal before lvalue | |
2510 | * subroutines too, so be backward compatible: | |
2511 | * cannot report errors. */ | |
2512 | ||
2513 | /* Scalar context *is* possible, on the LHS of -> only, | |
2514 | * as in f()->meth(). But this is not an lvalue. */ | |
2515 | if (gimme == G_SCALAR) | |
2516 | goto temporise; | |
2517 | if (gimme == G_ARRAY) { | |
a8bba7fa | 2518 | if (!CvLVALUE(cx->blk_sub.cv)) |
cd06dffe GS |
2519 | goto temporise_array; |
2520 | EXTEND_MORTAL(SP - newsp); | |
2521 | for (mark = newsp + 1; mark <= SP; mark++) { | |
2522 | if (SvTEMP(*mark)) | |
bb263b4e | 2523 | /*EMPTY*/; |
cd06dffe GS |
2524 | else if (SvFLAGS(*mark) & (SVs_PADTMP | SVf_READONLY)) |
2525 | *mark = sv_mortalcopy(*mark); | |
2526 | else { | |
2527 | /* Can be a localized value subject to deletion. */ | |
2528 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
b37c2d43 | 2529 | SvREFCNT_inc_void(*mark); |
cd06dffe GS |
2530 | } |
2531 | } | |
2532 | } | |
2533 | } | |
2534 | else if (cx->blk_sub.lval) { /* Leave it as it is if we can. */ | |
2535 | /* Here we go for robustness, not for speed, so we change all | |
2536 | * the refcounts so the caller gets a live guy. Cannot set | |
2537 | * TEMP, so sv_2mortal is out of question. */ | |
a8bba7fa | 2538 | if (!CvLVALUE(cx->blk_sub.cv)) { |
5dd42e15 DM |
2539 | LEAVE; |
2540 | cxstack_ix--; | |
b0d9ce38 | 2541 | POPSUB(cx,sv); |
d470f89e | 2542 | PL_curpm = newpm; |
b0d9ce38 | 2543 | LEAVESUB(sv); |
d470f89e GS |
2544 | DIE(aTHX_ "Can't modify non-lvalue subroutine call"); |
2545 | } | |
cd06dffe GS |
2546 | if (gimme == G_SCALAR) { |
2547 | MARK = newsp + 1; | |
2548 | EXTEND_MORTAL(1); | |
2549 | if (MARK == SP) { | |
f9bc45ef TP |
2550 | /* Temporaries are bad unless they happen to be elements |
2551 | * of a tied hash or array */ | |
2552 | if (SvFLAGS(TOPs) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY) && | |
2553 | !(SvRMAGICAL(TOPs) && mg_find(TOPs, PERL_MAGIC_tiedelem))) { | |
5dd42e15 DM |
2554 | LEAVE; |
2555 | cxstack_ix--; | |
b0d9ce38 | 2556 | POPSUB(cx,sv); |
d470f89e | 2557 | PL_curpm = newpm; |
b0d9ce38 | 2558 | LEAVESUB(sv); |
e9f19e3c HS |
2559 | DIE(aTHX_ "Can't return %s from lvalue subroutine", |
2560 | SvREADONLY(TOPs) ? (TOPs == &PL_sv_undef) ? "undef" | |
2561 | : "a readonly value" : "a temporary"); | |
d470f89e | 2562 | } |
cd06dffe GS |
2563 | else { /* Can be a localized value |
2564 | * subject to deletion. */ | |
2565 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
b37c2d43 | 2566 | SvREFCNT_inc_void(*mark); |
cd06dffe GS |
2567 | } |
2568 | } | |
d470f89e | 2569 | else { /* Should not happen? */ |
5dd42e15 DM |
2570 | LEAVE; |
2571 | cxstack_ix--; | |
b0d9ce38 | 2572 | POPSUB(cx,sv); |
d470f89e | 2573 | PL_curpm = newpm; |
b0d9ce38 | 2574 | LEAVESUB(sv); |
d470f89e | 2575 | DIE(aTHX_ "%s returned from lvalue subroutine in scalar context", |
cd06dffe | 2576 | (MARK > SP ? "Empty array" : "Array")); |
d470f89e | 2577 | } |
cd06dffe GS |
2578 | SP = MARK; |
2579 | } | |
2580 | else if (gimme == G_ARRAY) { | |
2581 | EXTEND_MORTAL(SP - newsp); | |
2582 | for (mark = newsp + 1; mark <= SP; mark++) { | |
f206cdda AMS |
2583 | if (*mark != &PL_sv_undef |
2584 | && SvFLAGS(*mark) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY)) { | |
d470f89e GS |
2585 | /* Might be flattened array after $#array = */ |
2586 | PUTBACK; | |
5dd42e15 DM |
2587 | LEAVE; |
2588 | cxstack_ix--; | |
b0d9ce38 | 2589 | POPSUB(cx,sv); |
d470f89e | 2590 | PL_curpm = newpm; |
b0d9ce38 | 2591 | LEAVESUB(sv); |
f206cdda AMS |
2592 | DIE(aTHX_ "Can't return a %s from lvalue subroutine", |
2593 | SvREADONLY(TOPs) ? "readonly value" : "temporary"); | |
d470f89e | 2594 | } |
cd06dffe | 2595 | else { |
cd06dffe GS |
2596 | /* Can be a localized value subject to deletion. */ |
2597 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
b37c2d43 | 2598 | SvREFCNT_inc_void(*mark); |
cd06dffe GS |
2599 | } |
2600 | } | |
2601 | } | |
2602 | } | |
2603 | else { | |
2604 | if (gimme == G_SCALAR) { | |
2605 | temporise: | |
2606 | MARK = newsp + 1; | |
2607 | if (MARK <= SP) { | |
a8bba7fa | 2608 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
cd06dffe GS |
2609 | if (SvTEMP(TOPs)) { |
2610 | *MARK = SvREFCNT_inc(TOPs); | |
2611 | FREETMPS; | |
2612 | sv_2mortal(*MARK); | |
2613 | } | |
2614 | else { | |
959e3673 | 2615 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
cd06dffe | 2616 | FREETMPS; |
959e3673 GS |
2617 | *MARK = sv_mortalcopy(sv); |
2618 | SvREFCNT_dec(sv); | |
cd06dffe GS |
2619 | } |
2620 | } | |
2621 | else | |
2622 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); | |
2623 | } | |
2624 | else { | |
2625 | MEXTEND(MARK, 0); | |
2626 | *MARK = &PL_sv_undef; | |
2627 | } | |
2628 | SP = MARK; | |
2629 | } | |
2630 | else if (gimme == G_ARRAY) { | |
2631 | temporise_array: | |
2632 | for (MARK = newsp + 1; MARK <= SP; MARK++) { | |
2633 | if (!SvTEMP(*MARK)) { | |
2634 | *MARK = sv_mortalcopy(*MARK); | |
2635 | TAINT_NOT; /* Each item is independent */ | |
2636 | } | |
2637 | } | |
2638 | } | |
2639 | } | |
2640 | PUTBACK; | |
1c846c1f | 2641 | |
5dd42e15 DM |
2642 | LEAVE; |
2643 | cxstack_ix--; | |
b0d9ce38 | 2644 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
cd06dffe GS |
2645 | PL_curpm = newpm; /* ... and pop $1 et al */ |
2646 | ||
b0d9ce38 | 2647 | LEAVESUB(sv); |
f39bc417 | 2648 | return cx->blk_sub.retop; |
cd06dffe GS |
2649 | } |
2650 | ||
2651 | ||
76e3520e | 2652 | STATIC CV * |
cea2e8a9 | 2653 | S_get_db_sub(pTHX_ SV **svp, CV *cv) |
3de9ffa1 | 2654 | { |
97aff369 | 2655 | dVAR; |
0bcc34c2 | 2656 | SV * const dbsv = GvSVn(PL_DBsub); |
491527d0 | 2657 | |
f398eb67 | 2658 | save_item(dbsv); |
491527d0 | 2659 | if (!PERLDB_SUB_NN) { |
92adfbd4 | 2660 | GV * const gv = CvGV(cv); |
491527d0 | 2661 | |
491527d0 | 2662 | if ( (CvFLAGS(cv) & (CVf_ANON | CVf_CLONED)) |
1c846c1f | 2663 | || strEQ(GvNAME(gv), "END") |
491527d0 | 2664 | || ((GvCV(gv) != cv) && /* Could be imported, and old sub redefined. */ |
92adfbd4 | 2665 | !( (SvTYPE(*svp) == SVt_PVGV) && (GvCV((GV*)*svp) == cv) ))) { |
491527d0 GS |
2666 | /* Use GV from the stack as a fallback. */ |
2667 | /* GV is potentially non-unique, or contain different CV. */ | |
823a54a3 | 2668 | SV * const tmp = newRV((SV*)cv); |
c2e66d9e GS |
2669 | sv_setsv(dbsv, tmp); |
2670 | SvREFCNT_dec(tmp); | |
491527d0 GS |
2671 | } |
2672 | else { | |
6136c704 | 2673 | gv_efullname3(dbsv, gv, NULL); |
491527d0 | 2674 | } |
3de9ffa1 MB |
2675 | } |
2676 | else { | |
a9c4fd4e | 2677 | const int type = SvTYPE(dbsv); |
f398eb67 NC |
2678 | if (type < SVt_PVIV && type != SVt_IV) |
2679 | sv_upgrade(dbsv, SVt_PVIV); | |
155aba94 | 2680 | (void)SvIOK_on(dbsv); |
45977657 | 2681 | SvIV_set(dbsv, PTR2IV(cv)); /* Do it the quickest way */ |
3de9ffa1 | 2682 | } |
491527d0 | 2683 | |
aed2304a | 2684 | if (CvISXSUB(cv)) |
3280af22 NIS |
2685 | PL_curcopdb = PL_curcop; |
2686 | cv = GvCV(PL_DBsub); | |
3de9ffa1 MB |
2687 | return cv; |
2688 | } | |
2689 | ||
a0d0e21e LW |
2690 | PP(pp_entersub) |
2691 | { | |
27da23d5 | 2692 | dVAR; dSP; dPOPss; |
a0d0e21e | 2693 | GV *gv; |
a0d0e21e | 2694 | register CV *cv; |
c09156bb | 2695 | register PERL_CONTEXT *cx; |
5d94fbed | 2696 | I32 gimme; |
a9c4fd4e | 2697 | const bool hasargs = (PL_op->op_flags & OPf_STACKED) != 0; |
a0d0e21e LW |
2698 | |
2699 | if (!sv) | |
cea2e8a9 | 2700 | DIE(aTHX_ "Not a CODE reference"); |
a0d0e21e | 2701 | switch (SvTYPE(sv)) { |
f1025168 NC |
2702 | /* This is overwhelming the most common case: */ |
2703 | case SVt_PVGV: | |
f730a42d NC |
2704 | if (!(cv = GvCVu((GV*)sv))) { |
2705 | HV *stash; | |
f2c0649b | 2706 | cv = sv_2cv(sv, &stash, &gv, 0); |
f730a42d | 2707 | } |
f1025168 NC |
2708 | if (!cv) { |
2709 | ENTER; | |
2710 | SAVETMPS; | |
2711 | goto try_autoload; | |
2712 | } | |
2713 | break; | |
a0d0e21e LW |
2714 | default: |
2715 | if (!SvROK(sv)) { | |
a9c4fd4e | 2716 | const char *sym; |
3280af22 | 2717 | if (sv == &PL_sv_yes) { /* unfound import, ignore */ |
fb73857a | 2718 | if (hasargs) |
3280af22 | 2719 | SP = PL_stack_base + POPMARK; |
a0d0e21e | 2720 | RETURN; |
fb73857a | 2721 | } |
15ff848f CS |
2722 | if (SvGMAGICAL(sv)) { |
2723 | mg_get(sv); | |
f5f1d18e AMS |
2724 | if (SvROK(sv)) |
2725 | goto got_rv; | |
6136c704 | 2726 | sym = SvPOKp(sv) ? SvPVX_const(sv) : NULL; |
15ff848f | 2727 | } |
a9c4fd4e | 2728 | else { |
8b6b16e7 | 2729 | sym = SvPV_nolen_const(sv); |
a9c4fd4e | 2730 | } |
15ff848f | 2731 | if (!sym) |
cea2e8a9 | 2732 | DIE(aTHX_ PL_no_usym, "a subroutine"); |
533c011a | 2733 | if (PL_op->op_private & HINT_STRICT_REFS) |
cea2e8a9 | 2734 | DIE(aTHX_ PL_no_symref, sym, "a subroutine"); |
864dbfa3 | 2735 | cv = get_cv(sym, TRUE); |
a0d0e21e LW |
2736 | break; |
2737 | } | |
f5f1d18e | 2738 | got_rv: |
f5284f61 | 2739 | { |
823a54a3 | 2740 | SV * const * sp = &sv; /* Used in tryAMAGICunDEREF macro. */ |
f5284f61 IZ |
2741 | tryAMAGICunDEREF(to_cv); |
2742 | } | |
a0d0e21e LW |
2743 | cv = (CV*)SvRV(sv); |
2744 | if (SvTYPE(cv) == SVt_PVCV) | |
2745 | break; | |
2746 | /* FALL THROUGH */ | |
2747 | case SVt_PVHV: | |
2748 | case SVt_PVAV: | |
cea2e8a9 | 2749 | DIE(aTHX_ "Not a CODE reference"); |
f1025168 | 2750 | /* This is the second most common case: */ |
a0d0e21e LW |
2751 | case SVt_PVCV: |
2752 | cv = (CV*)sv; | |
2753 | break; | |
a0d0e21e LW |
2754 | } |
2755 | ||
2756 | ENTER; | |
2757 | SAVETMPS; | |
2758 | ||
2759 | retry: | |
a0d0e21e | 2760 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
2f349aa0 NC |
2761 | GV* autogv; |
2762 | SV* sub_name; | |
2763 | ||
2764 | /* anonymous or undef'd function leaves us no recourse */ | |
2765 | if (CvANON(cv) || !(gv = CvGV(cv))) | |
2766 | DIE(aTHX_ "Undefined subroutine called"); | |
2767 | ||
2768 | /* autoloaded stub? */ | |
2769 | if (cv != GvCV(gv)) { | |
2770 | cv = GvCV(gv); | |
2771 | } | |
2772 | /* should call AUTOLOAD now? */ | |
2773 | else { | |
2774 | try_autoload: | |
2775 | if ((autogv = gv_autoload4(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), | |
2776 | FALSE))) | |
2777 | { | |
2778 | cv = GvCV(autogv); | |
2779 | } | |
2780 | /* sorry */ | |
2781 | else { | |
2782 | sub_name = sv_newmortal(); | |
6136c704 | 2783 | gv_efullname3(sub_name, gv, NULL); |
2f349aa0 NC |
2784 | DIE(aTHX_ "Undefined subroutine &%"SVf" called", sub_name); |
2785 | } | |
2786 | } | |
2787 | if (!cv) | |
2788 | DIE(aTHX_ "Not a CODE reference"); | |
2789 | goto retry; | |
a0d0e21e LW |
2790 | } |
2791 | ||
54310121 | 2792 | gimme = GIMME_V; |
67caa1fe | 2793 | if ((PL_op->op_private & OPpENTERSUB_DB) && GvCV(PL_DBsub) && !CvNODEBUG(cv)) { |
06492da6 SF |
2794 | if (CvASSERTION(cv) && PL_DBassertion) |
2795 | sv_setiv(PL_DBassertion, 1); | |
2796 | ||
4f01c5a5 | 2797 | cv = get_db_sub(&sv, cv); |
ccafdc96 RGS |
2798 | if (!cv || (!CvXSUB(cv) && !CvSTART(cv))) |
2799 | DIE(aTHX_ "No DB::sub routine defined"); | |
67caa1fe | 2800 | } |
a0d0e21e | 2801 | |
aed2304a | 2802 | if (!(CvISXSUB(cv))) { |
f1025168 | 2803 | /* This path taken at least 75% of the time */ |
a0d0e21e LW |
2804 | dMARK; |
2805 | register I32 items = SP - MARK; | |
0bcc34c2 | 2806 | AV* const padlist = CvPADLIST(cv); |
a0d0e21e LW |
2807 | PUSHBLOCK(cx, CXt_SUB, MARK); |
2808 | PUSHSUB(cx); | |
f39bc417 | 2809 | cx->blk_sub.retop = PL_op->op_next; |
a0d0e21e | 2810 | CvDEPTH(cv)++; |
6b35e009 GS |
2811 | /* XXX This would be a natural place to set C<PL_compcv = cv> so |
2812 | * that eval'' ops within this sub know the correct lexical space. | |
a3985cdc DM |
2813 | * Owing the speed considerations, we choose instead to search for |
2814 | * the cv using find_runcv() when calling doeval(). | |
6b35e009 | 2815 | */ |
b36bdeca | 2816 | if (CvDEPTH(cv) >= 2) { |
1d7c1841 | 2817 | PERL_STACK_OVERFLOW_CHECK(); |
26019298 | 2818 | pad_push(padlist, CvDEPTH(cv)); |
a0d0e21e | 2819 | } |
9320a037 DM |
2820 | SAVECOMPPAD(); |
2821 | PAD_SET_CUR_NOSAVE(padlist, CvDEPTH(cv)); | |
6d4ff0d2 | 2822 | if (hasargs) |
6d4ff0d2 | 2823 | { |
0bcc34c2 | 2824 | AV* const av = (AV*)PAD_SVl(0); |
221373f0 GS |
2825 | if (AvREAL(av)) { |
2826 | /* @_ is normally not REAL--this should only ever | |
2827 | * happen when DB::sub() calls things that modify @_ */ | |
2828 | av_clear(av); | |
2829 | AvREAL_off(av); | |
2830 | AvREIFY_on(av); | |
2831 | } | |
3280af22 | 2832 | cx->blk_sub.savearray = GvAV(PL_defgv); |
b37c2d43 | 2833 | GvAV(PL_defgv) = (AV*)SvREFCNT_inc_simple(av); |
dd2155a4 | 2834 | CX_CURPAD_SAVE(cx->blk_sub); |
6d4ff0d2 | 2835 | cx->blk_sub.argarray = av; |
a0d0e21e LW |
2836 | ++MARK; |
2837 | ||
2838 | if (items > AvMAX(av) + 1) { | |
504618e9 | 2839 | SV **ary = AvALLOC(av); |
a0d0e21e LW |
2840 | if (AvARRAY(av) != ary) { |
2841 | AvMAX(av) += AvARRAY(av) - AvALLOC(av); | |
f880fe2f | 2842 | SvPV_set(av, (char*)ary); |
a0d0e21e LW |
2843 | } |
2844 | if (items > AvMAX(av) + 1) { | |
2845 | AvMAX(av) = items - 1; | |
2846 | Renew(ary,items,SV*); | |
2847 | AvALLOC(av) = ary; | |
f880fe2f | 2848 | SvPV_set(av, (char*)ary); |
a0d0e21e LW |
2849 | } |
2850 | } | |
2851 | Copy(MARK,AvARRAY(av),items,SV*); | |
93965878 | 2852 | AvFILLp(av) = items - 1; |
1c846c1f | 2853 | |
a0d0e21e LW |
2854 | while (items--) { |
2855 | if (*MARK) | |
2856 | SvTEMP_off(*MARK); | |
2857 | MARK++; | |
2858 | } | |
2859 | } | |
4a925ff6 GS |
2860 | /* warning must come *after* we fully set up the context |
2861 | * stuff so that __WARN__ handlers can safely dounwind() | |
2862 | * if they want to | |
2863 | */ | |
2864 | if (CvDEPTH(cv) == 100 && ckWARN(WARN_RECURSION) | |
2865 | && !(PERLDB_SUB && cv == GvCV(PL_DBsub))) | |
2866 | sub_crush_depth(cv); | |
77a005ab | 2867 | #if 0 |
bf49b057 | 2868 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
0f15f207 | 2869 | "%p entersub returning %p\n", thr, CvSTART(cv))); |
77a005ab | 2870 | #endif |
a0d0e21e LW |
2871 | RETURNOP(CvSTART(cv)); |
2872 | } | |
f1025168 | 2873 | else { |
f1025168 NC |
2874 | I32 markix = TOPMARK; |
2875 | ||
2876 | PUTBACK; | |
2877 | ||
2878 | if (!hasargs) { | |
2879 | /* Need to copy @_ to stack. Alternative may be to | |
2880 | * switch stack to @_, and copy return values | |
2881 | * back. This would allow popping @_ in XSUB, e.g.. XXXX */ | |
a3b680e6 AL |
2882 | AV * const av = GvAV(PL_defgv); |
2883 | const I32 items = AvFILLp(av) + 1; /* @_ is not tieable */ | |
f1025168 NC |
2884 | |
2885 | if (items) { | |
2886 | /* Mark is at the end of the stack. */ | |
2887 | EXTEND(SP, items); | |
2888 | Copy(AvARRAY(av), SP + 1, items, SV*); | |
2889 | SP += items; | |
2890 | PUTBACK ; | |
2891 | } | |
2892 | } | |
2893 | /* We assume first XSUB in &DB::sub is the called one. */ | |
2894 | if (PL_curcopdb) { | |
2895 | SAVEVPTR(PL_curcop); | |
2896 | PL_curcop = PL_curcopdb; | |
2897 | PL_curcopdb = NULL; | |
2898 | } | |
2899 | /* Do we need to open block here? XXXX */ | |
2900 | (void)(*CvXSUB(cv))(aTHX_ cv); | |
2901 | ||
2902 | /* Enforce some sanity in scalar context. */ | |
2903 | if (gimme == G_SCALAR && ++markix != PL_stack_sp - PL_stack_base ) { | |
2904 | if (markix > PL_stack_sp - PL_stack_base) | |
2905 | *(PL_stack_base + markix) = &PL_sv_undef; | |
2906 | else | |
2907 | *(PL_stack_base + markix) = *PL_stack_sp; | |
2908 | PL_stack_sp = PL_stack_base + markix; | |
2909 | } | |
f1025168 NC |
2910 | LEAVE; |
2911 | return NORMAL; | |
2912 | } | |
a0d0e21e LW |
2913 | } |
2914 | ||
44a8e56a | 2915 | void |
864dbfa3 | 2916 | Perl_sub_crush_depth(pTHX_ CV *cv) |
44a8e56a | 2917 | { |
2918 | if (CvANON(cv)) | |
9014280d | 2919 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on anonymous subroutine"); |
44a8e56a | 2920 | else { |
aec46f14 | 2921 | SV* const tmpstr = sv_newmortal(); |
6136c704 | 2922 | gv_efullname3(tmpstr, CvGV(cv), NULL); |
35c1215d NC |
2923 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on subroutine \"%"SVf"\"", |
2924 | tmpstr); | |
44a8e56a | 2925 | } |
2926 | } | |
2927 | ||
a0d0e21e LW |
2928 | PP(pp_aelem) |
2929 | { | |
97aff369 | 2930 | dVAR; dSP; |
a0d0e21e | 2931 | SV** svp; |
a3b680e6 | 2932 | SV* const elemsv = POPs; |
d804643f | 2933 | IV elem = SvIV(elemsv); |
0bcc34c2 | 2934 | AV* const av = (AV*)POPs; |
e1ec3a88 AL |
2935 | const U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
2936 | const U32 defer = (PL_op->op_private & OPpLVAL_DEFER) && (elem > av_len(av)); | |
be6c24e0 | 2937 | SV *sv; |
a0d0e21e | 2938 | |
e35c1634 | 2939 | if (SvROK(elemsv) && !SvGAMAGIC(elemsv) && ckWARN(WARN_MISC)) |
35c1215d | 2940 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Use of reference \"%"SVf"\" as array index", elemsv); |
748a9306 | 2941 | if (elem > 0) |
3280af22 | 2942 | elem -= PL_curcop->cop_arybase; |
a0d0e21e LW |
2943 | if (SvTYPE(av) != SVt_PVAV) |
2944 | RETPUSHUNDEF; | |
68dc0745 | 2945 | svp = av_fetch(av, elem, lval && !defer); |
a0d0e21e | 2946 | if (lval) { |
2b573ace | 2947 | #ifdef PERL_MALLOC_WRAP |
2b573ace | 2948 | if (SvUOK(elemsv)) { |
a9c4fd4e | 2949 | const UV uv = SvUV(elemsv); |
2b573ace JH |
2950 | elem = uv > IV_MAX ? IV_MAX : uv; |
2951 | } | |
2952 | else if (SvNOK(elemsv)) | |
2953 | elem = (IV)SvNV(elemsv); | |
a3b680e6 AL |
2954 | if (elem > 0) { |
2955 | static const char oom_array_extend[] = | |
2956 | "Out of memory during array extend"; /* Duplicated in av.c */ | |
2b573ace | 2957 | MEM_WRAP_CHECK_1(elem,SV*,oom_array_extend); |
a3b680e6 | 2958 | } |
2b573ace | 2959 | #endif |
3280af22 | 2960 | if (!svp || *svp == &PL_sv_undef) { |
68dc0745 | 2961 | SV* lv; |
2962 | if (!defer) | |
cea2e8a9 | 2963 | DIE(aTHX_ PL_no_aelem, elem); |
68dc0745 | 2964 | lv = sv_newmortal(); |
2965 | sv_upgrade(lv, SVt_PVLV); | |
2966 | LvTYPE(lv) = 'y'; | |
a0714e2c | 2967 | sv_magic(lv, NULL, PERL_MAGIC_defelem, NULL, 0); |
b37c2d43 | 2968 | LvTARG(lv) = SvREFCNT_inc_simple(av); |
68dc0745 | 2969 | LvTARGOFF(lv) = elem; |
2970 | LvTARGLEN(lv) = 1; | |
2971 | PUSHs(lv); | |
2972 | RETURN; | |
2973 | } | |
bfc4de9f | 2974 | if (PL_op->op_private & OPpLVAL_INTRO) |
161b7d16 | 2975 | save_aelem(av, elem, svp); |
533c011a NIS |
2976 | else if (PL_op->op_private & OPpDEREF) |
2977 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); | |
a0d0e21e | 2978 | } |
3280af22 | 2979 | sv = (svp ? *svp : &PL_sv_undef); |
be6c24e0 GS |
2980 | if (!lval && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
2981 | sv = sv_mortalcopy(sv); | |
2982 | PUSHs(sv); | |
a0d0e21e LW |
2983 | RETURN; |
2984 | } | |
2985 | ||
02a9e968 | 2986 | void |
864dbfa3 | 2987 | Perl_vivify_ref(pTHX_ SV *sv, U32 to_what) |
02a9e968 | 2988 | { |
5b295bef | 2989 | SvGETMAGIC(sv); |
02a9e968 CS |
2990 | if (!SvOK(sv)) { |
2991 | if (SvREADONLY(sv)) | |
cea2e8a9 | 2992 | Perl_croak(aTHX_ PL_no_modify); |
5f05dabc | 2993 | if (SvTYPE(sv) < SVt_RV) |
2994 | sv_upgrade(sv, SVt_RV); | |
2995 | else if (SvTYPE(sv) >= SVt_PV) { | |
8bd4d4c5 | 2996 | SvPV_free(sv); |
b162af07 SP |
2997 | SvLEN_set(sv, 0); |
2998 | SvCUR_set(sv, 0); | |
5f05dabc | 2999 | } |
68dc0745 | 3000 | switch (to_what) { |
5f05dabc | 3001 | case OPpDEREF_SV: |
561b68a9 | 3002 | SvRV_set(sv, newSV(0)); |
5f05dabc | 3003 | break; |
3004 | case OPpDEREF_AV: | |
b162af07 | 3005 | SvRV_set(sv, (SV*)newAV()); |
5f05dabc | 3006 | break; |
3007 | case OPpDEREF_HV: | |
b162af07 | 3008 | SvRV_set(sv, (SV*)newHV()); |
5f05dabc | 3009 | break; |
3010 | } | |
02a9e968 CS |
3011 | SvROK_on(sv); |
3012 | SvSETMAGIC(sv); | |
3013 | } | |
3014 | } | |
3015 | ||
a0d0e21e LW |
3016 | PP(pp_method) |
3017 | { | |
97aff369 | 3018 | dVAR; dSP; |
890ce7af | 3019 | SV* const sv = TOPs; |
f5d5a27c CS |
3020 | |
3021 | if (SvROK(sv)) { | |
890ce7af | 3022 | SV* const rsv = SvRV(sv); |
f5d5a27c CS |
3023 | if (SvTYPE(rsv) == SVt_PVCV) { |
3024 | SETs(rsv); | |
3025 | RETURN; | |
3026 | } | |
3027 | } | |
3028 | ||
4608196e | 3029 | SETs(method_common(sv, NULL)); |
f5d5a27c CS |
3030 | RETURN; |
3031 | } | |
3032 | ||
3033 | PP(pp_method_named) | |
3034 | { | |
97aff369 | 3035 | dVAR; dSP; |
890ce7af | 3036 | SV* const sv = cSVOP_sv; |
c158a4fd | 3037 | U32 hash = SvSHARED_HASH(sv); |
f5d5a27c CS |
3038 | |
3039 | XPUSHs(method_common(sv, &hash)); | |
3040 | RETURN; | |
3041 | } | |
3042 | ||
3043 | STATIC SV * | |
3044 | S_method_common(pTHX_ SV* meth, U32* hashp) | |
3045 | { | |
97aff369 | 3046 | dVAR; |
a0d0e21e LW |
3047 | SV* ob; |
3048 | GV* gv; | |
56304f61 | 3049 | HV* stash; |
f5d5a27c | 3050 | STRLEN namelen; |
6136c704 | 3051 | const char* packname = NULL; |
a0714e2c | 3052 | SV *packsv = NULL; |
ac91690f | 3053 | STRLEN packlen; |
46c461b5 AL |
3054 | const char * const name = SvPV_const(meth, namelen); |
3055 | SV * const sv = *(PL_stack_base + TOPMARK + 1); | |
f5d5a27c | 3056 | |
4f1b7578 SC |
3057 | if (!sv) |
3058 | Perl_croak(aTHX_ "Can't call method \"%s\" on an undefined value", name); | |
3059 | ||
5b295bef | 3060 | SvGETMAGIC(sv); |
a0d0e21e | 3061 | if (SvROK(sv)) |
16d20bd9 | 3062 | ob = (SV*)SvRV(sv); |
a0d0e21e LW |
3063 | else { |
3064 | GV* iogv; | |
a0d0e21e | 3065 | |
af09ea45 | 3066 | /* this isn't a reference */ |
5c144d81 | 3067 | if(SvOK(sv) && (packname = SvPV_const(sv, packlen))) { |
b464bac0 | 3068 | const HE* const he = hv_fetch_ent(PL_stashcache, sv, 0, 0); |
081fc587 | 3069 | if (he) { |
5e6396ae | 3070 | stash = INT2PTR(HV*,SvIV(HeVAL(he))); |
081fc587 AB |
3071 | goto fetch; |
3072 | } | |
3073 | } | |
3074 | ||
a0d0e21e | 3075 | if (!SvOK(sv) || |
05f5af9a | 3076 | !(packname) || |
f776e3cd | 3077 | !(iogv = gv_fetchsv(sv, 0, SVt_PVIO)) || |
a0d0e21e LW |
3078 | !(ob=(SV*)GvIO(iogv))) |
3079 | { | |
af09ea45 | 3080 | /* this isn't the name of a filehandle either */ |
1c846c1f | 3081 | if (!packname || |
fd400ab9 | 3082 | ((UTF8_IS_START(*packname) && DO_UTF8(sv)) |
b86a2fa7 | 3083 | ? !isIDFIRST_utf8((U8*)packname) |
834a4ddd LW |
3084 | : !isIDFIRST(*packname) |
3085 | )) | |
3086 | { | |
f5d5a27c CS |
3087 | Perl_croak(aTHX_ "Can't call method \"%s\" %s", name, |
3088 | SvOK(sv) ? "without a package or object reference" | |
3089 | : "on an undefined value"); | |
834a4ddd | 3090 | } |
af09ea45 IK |
3091 | /* assume it's a package name */ |
3092 | stash = gv_stashpvn(packname, packlen, FALSE); | |
0dae17bd GS |
3093 | if (!stash) |
3094 | packsv = sv; | |
081fc587 | 3095 | else { |
d4c19fe8 | 3096 | SV* const ref = newSViv(PTR2IV(stash)); |
7e8961ec AB |
3097 | hv_store(PL_stashcache, packname, packlen, ref, 0); |
3098 | } | |
ac91690f | 3099 | goto fetch; |
a0d0e21e | 3100 | } |
af09ea45 | 3101 | /* it _is_ a filehandle name -- replace with a reference */ |
3280af22 | 3102 | *(PL_stack_base + TOPMARK + 1) = sv_2mortal(newRV((SV*)iogv)); |
a0d0e21e LW |
3103 | } |
3104 | ||
af09ea45 | 3105 | /* if we got here, ob should be a reference or a glob */ |
f0d43078 GS |
3106 | if (!ob || !(SvOBJECT(ob) |
3107 | || (SvTYPE(ob) == SVt_PVGV && (ob = (SV*)GvIO((GV*)ob)) | |
3108 | && SvOBJECT(ob)))) | |
3109 | { | |
f5d5a27c CS |
3110 | Perl_croak(aTHX_ "Can't call method \"%s\" on unblessed reference", |
3111 | name); | |
f0d43078 | 3112 | } |
a0d0e21e | 3113 | |
56304f61 | 3114 | stash = SvSTASH(ob); |
a0d0e21e | 3115 | |
ac91690f | 3116 | fetch: |
af09ea45 IK |
3117 | /* NOTE: stash may be null, hope hv_fetch_ent and |
3118 | gv_fetchmethod can cope (it seems they can) */ | |
3119 | ||
f5d5a27c CS |
3120 | /* shortcut for simple names */ |
3121 | if (hashp) { | |
b464bac0 | 3122 | const HE* const he = hv_fetch_ent(stash, meth, 0, *hashp); |
f5d5a27c CS |
3123 | if (he) { |
3124 | gv = (GV*)HeVAL(he); | |
3125 | if (isGV(gv) && GvCV(gv) && | |
3126 | (!GvCVGEN(gv) || GvCVGEN(gv) == PL_sub_generation)) | |
3127 | return (SV*)GvCV(gv); | |
3128 | } | |
3129 | } | |
3130 | ||
0dae17bd | 3131 | gv = gv_fetchmethod(stash ? stash : (HV*)packsv, name); |
af09ea45 | 3132 | |
56304f61 | 3133 | if (!gv) { |
af09ea45 IK |
3134 | /* This code tries to figure out just what went wrong with |
3135 | gv_fetchmethod. It therefore needs to duplicate a lot of | |
3136 | the internals of that function. We can't move it inside | |
3137 | Perl_gv_fetchmethod_autoload(), however, since that would | |
3138 | cause UNIVERSAL->can("NoSuchPackage::foo") to croak, and we | |
3139 | don't want that. | |
3140 | */ | |
a9c4fd4e | 3141 | const char* leaf = name; |
6136c704 | 3142 | const char* sep = NULL; |
a9c4fd4e | 3143 | const char* p; |
56304f61 CS |
3144 | |
3145 | for (p = name; *p; p++) { | |
3146 | if (*p == '\'') | |
3147 | sep = p, leaf = p + 1; | |
3148 | else if (*p == ':' && *(p + 1) == ':') | |
3149 | sep = p, leaf = p + 2; | |
3150 | } | |
3151 | if (!sep || ((sep - name) == 5 && strnEQ(name, "SUPER", 5))) { | |
9b9d0b15 NC |
3152 | /* the method name is unqualified or starts with SUPER:: */ |
3153 | bool need_strlen = 1; | |
3154 | if (sep) { | |
3155 | packname = CopSTASHPV(PL_curcop); | |
3156 | } | |
3157 | else if (stash) { | |
46c461b5 | 3158 | HEK * const packhek = HvNAME_HEK(stash); |
9b9d0b15 NC |
3159 | if (packhek) { |
3160 | packname = HEK_KEY(packhek); | |
3161 | packlen = HEK_LEN(packhek); | |
3162 | need_strlen = 0; | |
3163 | } else { | |
3164 | goto croak; | |
3165 | } | |
3166 | } | |
3167 | ||
3168 | if (!packname) { | |
3169 | croak: | |
e27ad1f2 AV |
3170 | Perl_croak(aTHX_ |
3171 | "Can't use anonymous symbol table for method lookup"); | |
9b9d0b15 NC |
3172 | } |
3173 | else if (need_strlen) | |
e27ad1f2 | 3174 | packlen = strlen(packname); |
9b9d0b15 | 3175 | |
56304f61 CS |
3176 | } |
3177 | else { | |
af09ea45 | 3178 | /* the method name is qualified */ |
56304f61 CS |
3179 | packname = name; |
3180 | packlen = sep - name; | |
3181 | } | |
af09ea45 IK |
3182 | |
3183 | /* we're relying on gv_fetchmethod not autovivifying the stash */ | |
3184 | if (gv_stashpvn(packname, packlen, FALSE)) { | |
c1899e02 | 3185 | Perl_croak(aTHX_ |
af09ea45 IK |
3186 | "Can't locate object method \"%s\" via package \"%.*s\"", |
3187 | leaf, (int)packlen, packname); | |
c1899e02 GS |
3188 | } |
3189 | else { | |
3190 | Perl_croak(aTHX_ | |
af09ea45 IK |
3191 | "Can't locate object method \"%s\" via package \"%.*s\"" |
3192 | " (perhaps you forgot to load \"%.*s\"?)", | |
3193 | leaf, (int)packlen, packname, (int)packlen, packname); | |
c1899e02 | 3194 | } |
56304f61 | 3195 | } |
f5d5a27c | 3196 | return isGV(gv) ? (SV*)GvCV(gv) : (SV*)gv; |
a0d0e21e | 3197 | } |
241d1a3b NC |
3198 | |
3199 | /* | |
3200 | * Local variables: | |
3201 | * c-indentation-style: bsd | |
3202 | * c-basic-offset: 4 | |
3203 | * indent-tabs-mode: t | |
3204 | * End: | |
3205 | * | |
37442d52 RGS |
3206 | * ex: set ts=8 sts=4 sw=4 noet: |
3207 | */ |