https://perl5.git.perl.org / perl5.git / blame
| Commit | Line | Data |
|---|---|---|
| a0d0e21e LW |
1 | /* pp_hot.c |
| 2 | * | |
| 1129b882 NC |
3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
| 4 | * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others | |
| a0d0e21e LW |
5 | * |
| 6 | * You may distribute under the terms of either the GNU General Public | |
| 7 | * License or the Artistic License, as specified in the README file. | |
| 8 | * | |
| 9 | */ | |
| 10 | ||
| 11 | /* | |
| 12 | * Then he heard Merry change the note, and up went the Horn-cry of Buckland, | |
| 13 | * shaking the air. | |
| 14 | * | |
| 4ac71550 TC |
15 | * Awake! Awake! Fear, Fire, Foes! Awake! |
| 16 | * Fire, Foes! Awake! | |
| 17 | * | |
| 18 | * [p.1007 of _The Lord of the Rings_, VI/viii: "The Scouring of the Shire"] | |
| a0d0e21e LW |
19 | */ |
| 20 | ||
| 166f8a29 DM |
21 | /* This file contains 'hot' pp ("push/pop") functions that |
| 22 | * execute the opcodes that make up a perl program. A typical pp function | |
| 23 | * expects to find its arguments on the stack, and usually pushes its | |
| 24 | * results onto the stack, hence the 'pp' terminology. Each OP structure | |
| 25 | * contains a pointer to the relevant pp_foo() function. | |
| 26 | * | |
| 27 | * By 'hot', we mean common ops whose execution speed is critical. | |
| 28 | * By gathering them together into a single file, we encourage | |
| 29 | * CPU cache hits on hot code. Also it could be taken as a warning not to | |
| 30 | * change any code in this file unless you're sure it won't affect | |
| 31 | * performance. | |
| 32 | */ | |
| 33 | ||
| a0d0e21e | 34 | #include "EXTERN.h" |
| 864dbfa3 | 35 | #define PERL_IN_PP_HOT_C |
| a0d0e21e LW |
36 | #include "perl.h" |
| 37 | ||
| 38 | /* Hot code. */ | |
| 39 | ||
| 40 | PP(pp_const) | |
| 41 | { | |
| 97aff369 | 42 | dVAR; |
| 39644a26 | 43 | dSP; |
| 996c9baa | 44 | XPUSHs(cSVOP_sv); |
| a0d0e21e LW |
45 | RETURN; |
| 46 | } | |
| 47 | ||
| 48 | PP(pp_nextstate) | |
| 49 | { | |
| 97aff369 | 50 | dVAR; |
| 533c011a | 51 | PL_curcop = (COP*)PL_op; |
| a0d0e21e | 52 | TAINT_NOT; /* Each statement is presumed innocent */ |
| 3280af22 | 53 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
| a0d0e21e | 54 | FREETMPS; |
| f410a211 | 55 | PERL_ASYNC_CHECK(); |
| a0d0e21e LW |
56 | return NORMAL; |
| 57 | } | |
| 58 | ||
| 59 | PP(pp_gvsv) | |
| 60 | { | |
| 97aff369 | 61 | dVAR; |
| 39644a26 | 62 | dSP; |
| 924508f0 | 63 | EXTEND(SP,1); |
| 533c011a | 64 | if (PL_op->op_private & OPpLVAL_INTRO) |
| 1d7c1841 | 65 | PUSHs(save_scalar(cGVOP_gv)); |
| a0d0e21e | 66 | else |
| c69033f2 | 67 | PUSHs(GvSVn(cGVOP_gv)); |
| a0d0e21e LW |
68 | RETURN; |
| 69 | } | |
| 70 | ||
| 71 | PP(pp_null) | |
| 72 | { | |
| 97aff369 | 73 | dVAR; |
| a0d0e21e LW |
74 | return NORMAL; |
| 75 | } | |
| 76 | ||
| 77 | PP(pp_pushmark) | |
| 78 | { | |
| 97aff369 | 79 | dVAR; |
| 3280af22 | 80 | PUSHMARK(PL_stack_sp); |
| a0d0e21e LW |
81 | return NORMAL; |
| 82 | } | |
| 83 | ||
| 84 | PP(pp_stringify) | |
| 85 | { | |
| 97aff369 | 86 | dVAR; dSP; dTARGET; |
| 6050d10e | 87 | sv_copypv(TARG,TOPs); |
| a0d0e21e LW |
88 | SETTARG; |
| 89 | RETURN; | |
| 90 | } | |
| 91 | ||
| 92 | PP(pp_gv) | |
| 93 | { | |
| 97aff369 | 94 | dVAR; dSP; |
| ad64d0ec | 95 | XPUSHs(MUTABLE_SV(cGVOP_gv)); |
| a0d0e21e LW |
96 | RETURN; |
| 97 | } | |
| 98 | ||
| 99 | PP(pp_and) | |
| 100 | { | |
| 97aff369 | 101 | dVAR; dSP; |
| f410a211 | 102 | PERL_ASYNC_CHECK(); |
| a0d0e21e LW |
103 | if (!SvTRUE(TOPs)) |
| 104 | RETURN; | |
| 105 | else { | |
| c960fc3b SP |
106 | if (PL_op->op_type == OP_AND) |
| 107 | --SP; | |
| a0d0e21e LW |
108 | RETURNOP(cLOGOP->op_other); |
| 109 | } | |
| 110 | } | |
| 111 | ||
| 112 | PP(pp_sassign) | |
| 113 | { | |
| 97aff369 | 114 | dVAR; dSP; dPOPTOPssrl; |
| 748a9306 | 115 | |
| 533c011a | 116 | if (PL_op->op_private & OPpASSIGN_BACKWARDS) { |
| 0bd48802 AL |
117 | SV * const temp = left; |
| 118 | left = right; right = temp; | |
| a0d0e21e | 119 | } |
| 3280af22 | 120 | if (PL_tainting && PL_tainted && !SvTAINTED(left)) |
| a0d0e21e | 121 | TAINT_NOT; |
| e26df76a | 122 | if (PL_op->op_private & OPpASSIGN_CV_TO_GV) { |
| 6136c704 | 123 | SV * const cv = SvRV(left); |
| e26df76a | 124 | const U32 cv_type = SvTYPE(cv); |
| 13be902c | 125 | const bool is_gv = isGV_with_GP(right); |
| 6136c704 | 126 | const bool got_coderef = cv_type == SVt_PVCV || cv_type == SVt_PVFM; |
| e26df76a NC |
127 | |
| 128 | if (!got_coderef) { | |
| 129 | assert(SvROK(cv)); | |
| 130 | } | |
| 131 | ||
| ae6d515f | 132 | /* Can do the optimisation if right (LVALUE) is not a typeglob, |
| e26df76a NC |
133 | left (RVALUE) is a reference to something, and we're in void |
| 134 | context. */ | |
| 13be902c | 135 | if (!got_coderef && !is_gv && GIMME_V == G_VOID) { |
| e26df76a | 136 | /* Is the target symbol table currently empty? */ |
| 6136c704 | 137 | GV * const gv = gv_fetchsv(right, GV_NOINIT, SVt_PVGV); |
| bb112e5a | 138 | if (SvTYPE(gv) != SVt_PVGV && !SvOK(gv)) { |
| e26df76a NC |
139 | /* Good. Create a new proxy constant subroutine in the target. |
| 140 | The gv becomes a(nother) reference to the constant. */ | |
| 141 | SV *const value = SvRV(cv); | |
| 142 | ||
| ad64d0ec | 143 | SvUPGRADE(MUTABLE_SV(gv), SVt_IV); |
| 1ccdb730 | 144 | SvPCS_IMPORTED_on(gv); |
| e26df76a | 145 | SvRV_set(gv, value); |
| b37c2d43 | 146 | SvREFCNT_inc_simple_void(value); |
| e26df76a NC |
147 | SETs(right); |
| 148 | RETURN; | |
| 149 | } | |
| 150 | } | |
| 151 | ||
| 152 | /* Need to fix things up. */ | |
| 13be902c | 153 | if (!is_gv) { |
| e26df76a | 154 | /* Need to fix GV. */ |
| ad64d0ec | 155 | right = MUTABLE_SV(gv_fetchsv(right, GV_ADD, SVt_PVGV)); |
| e26df76a NC |
156 | } |
| 157 | ||
| 158 | if (!got_coderef) { | |
| 159 | /* We've been returned a constant rather than a full subroutine, | |
| 160 | but they expect a subroutine reference to apply. */ | |
| 53a42478 | 161 | if (SvROK(cv)) { |
| d343c3ef | 162 | ENTER_with_name("sassign_coderef"); |
| 53a42478 NC |
163 | SvREFCNT_inc_void(SvRV(cv)); |
| 164 | /* newCONSTSUB takes a reference count on the passed in SV | |
| 165 | from us. We set the name to NULL, otherwise we get into | |
| 166 | all sorts of fun as the reference to our new sub is | |
| 167 | donated to the GV that we're about to assign to. | |
| 168 | */ | |
| ad64d0ec NC |
169 | SvRV_set(left, MUTABLE_SV(newCONSTSUB(GvSTASH(right), NULL, |
| 170 | SvRV(cv)))); | |
| 53a42478 | 171 | SvREFCNT_dec(cv); |
| d343c3ef | 172 | LEAVE_with_name("sassign_coderef"); |
| 53a42478 NC |
173 | } else { |
| 174 | /* What can happen for the corner case *{"BONK"} = \&{"BONK"}; | |
| 175 | is that | |
| 176 | First: ops for \&{"BONK"}; return us the constant in the | |
| 177 | symbol table | |
| 178 | Second: ops for *{"BONK"} cause that symbol table entry | |
| 179 | (and our reference to it) to be upgraded from RV | |
| 180 | to typeblob) | |
| 181 | Thirdly: We get here. cv is actually PVGV now, and its | |
| 182 | GvCV() is actually the subroutine we're looking for | |
| 183 | ||
| 184 | So change the reference so that it points to the subroutine | |
| 185 | of that typeglob, as that's what they were after all along. | |
| 186 | */ | |
| 159b6efe | 187 | GV *const upgraded = MUTABLE_GV(cv); |
| 53a42478 NC |
188 | CV *const source = GvCV(upgraded); |
| 189 | ||
| 190 | assert(source); | |
| 191 | assert(CvFLAGS(source) & CVf_CONST); | |
| 192 | ||
| 193 | SvREFCNT_inc_void(source); | |
| 194 | SvREFCNT_dec(upgraded); | |
| ad64d0ec | 195 | SvRV_set(left, MUTABLE_SV(source)); |
| 53a42478 | 196 | } |
| e26df76a | 197 | } |
| 53a42478 | 198 | |
| e26df76a | 199 | } |
| 8fe85e3f FC |
200 | if ( |
| 201 | SvTEMP(right) && !SvSMAGICAL(right) && SvREFCNT(right) == 1 && | |
| 202 | (!isGV_with_GP(right) || SvFAKE(right)) && ckWARN(WARN_MISC) | |
| 203 | ) | |
| 204 | Perl_warner(aTHX_ | |
| 205 | packWARN(WARN_MISC), "Useless assignment to a temporary" | |
| 206 | ); | |
| 54310121 | 207 | SvSetMagicSV(right, left); |
| a0d0e21e LW |
208 | SETs(right); |
| 209 | RETURN; | |
| 210 | } | |
| 211 | ||
| 212 | PP(pp_cond_expr) | |
| 213 | { | |
| 97aff369 | 214 | dVAR; dSP; |
| f410a211 | 215 | PERL_ASYNC_CHECK(); |
| a0d0e21e | 216 | if (SvTRUEx(POPs)) |
| 1a67a97c | 217 | RETURNOP(cLOGOP->op_other); |
| a0d0e21e | 218 | else |
| 1a67a97c | 219 | RETURNOP(cLOGOP->op_next); |
| a0d0e21e LW |
220 | } |
| 221 | ||
| 222 | PP(pp_unstack) | |
| 223 | { | |
| 97aff369 | 224 | dVAR; |
| 8f3964af | 225 | PERL_ASYNC_CHECK(); |
| a0d0e21e | 226 | TAINT_NOT; /* Each statement is presumed innocent */ |
| 3280af22 | 227 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
| a0d0e21e | 228 | FREETMPS; |
| eae48c89 Z |
229 | if (!(PL_op->op_flags & OPf_SPECIAL)) { |
| 230 | I32 oldsave = PL_scopestack[PL_scopestack_ix - 1]; | |
| 231 | LEAVE_SCOPE(oldsave); | |
| 232 | } | |
| a0d0e21e LW |
233 | return NORMAL; |
| 234 | } | |
| 235 | ||
| a0d0e21e LW |
236 | PP(pp_concat) |
| 237 | { | |
| 6f1401dc | 238 | dVAR; dSP; dATARGET; tryAMAGICbin_MG(concat_amg, AMGf_assign); |
| 748a9306 LW |
239 | { |
| 240 | dPOPTOPssrl; | |
| 8d6d96c1 HS |
241 | bool lbyte; |
| 242 | STRLEN rlen; | |
| d4c19fe8 | 243 | const char *rpv = NULL; |
| a6b599c7 | 244 | bool rbyte = FALSE; |
| a9c4fd4e | 245 | bool rcopied = FALSE; |
| 8d6d96c1 | 246 | |
| 6f1401dc DM |
247 | if (TARG == right && right != left) { /* $r = $l.$r */ |
| 248 | rpv = SvPV_nomg_const(right, rlen); | |
| c75ab21a | 249 | rbyte = !DO_UTF8(right); |
| 59cd0e26 | 250 | right = newSVpvn_flags(rpv, rlen, SVs_TEMP); |
| 349d4f2f | 251 | rpv = SvPV_const(right, rlen); /* no point setting UTF-8 here */ |
| db79b45b | 252 | rcopied = TRUE; |
| 8d6d96c1 | 253 | } |
| 7889fe52 | 254 | |
| 89734059 | 255 | if (TARG != left) { /* not $l .= $r */ |
| a9c4fd4e | 256 | STRLEN llen; |
| 6f1401dc | 257 | const char* const lpv = SvPV_nomg_const(left, llen); |
| 90f5826e | 258 | lbyte = !DO_UTF8(left); |
| 8d6d96c1 HS |
259 | sv_setpvn(TARG, lpv, llen); |
| 260 | if (!lbyte) | |
| 261 | SvUTF8_on(TARG); | |
| 262 | else | |
| 263 | SvUTF8_off(TARG); | |
| 264 | } | |
| 89734059 | 265 | else { /* $l .= $r */ |
| c75ab21a | 266 | if (!SvOK(TARG)) { |
| 89734059 | 267 | if (left == right && ckWARN(WARN_UNINITIALIZED)) /* $l .= $l */ |
| c75ab21a | 268 | report_uninit(right); |
| 76f68e9b | 269 | sv_setpvs(left, ""); |
| c75ab21a | 270 | } |
| c5aa2872 DM |
271 | lbyte = (SvROK(left) && SvTYPE(SvRV(left)) == SVt_REGEXP) |
| 272 | ? !DO_UTF8(SvRV(left)) : !DO_UTF8(left); | |
| 90f5826e TS |
273 | if (IN_BYTES) |
| 274 | SvUTF8_off(TARG); | |
| 8d6d96c1 | 275 | } |
| a12c0f56 | 276 | |
| c75ab21a | 277 | if (!rcopied) { |
| 6f1401dc | 278 | if (left == right) |
| 89734059 | 279 | /* $r.$r: do magic twice: tied might return different 2nd time */ |
| 6f1401dc DM |
280 | SvGETMAGIC(right); |
| 281 | rpv = SvPV_nomg_const(right, rlen); | |
| c75ab21a RH |
282 | rbyte = !DO_UTF8(right); |
| 283 | } | |
| 8d6d96c1 | 284 | if (lbyte != rbyte) { |
| e3393f51 NT |
285 | /* sv_utf8_upgrade_nomg() may reallocate the stack */ |
| 286 | PUTBACK; | |
| 8d6d96c1 HS |
287 | if (lbyte) |
| 288 | sv_utf8_upgrade_nomg(TARG); | |
| 289 | else { | |
| db79b45b | 290 | if (!rcopied) |
| 59cd0e26 | 291 | right = newSVpvn_flags(rpv, rlen, SVs_TEMP); |
| 8d6d96c1 | 292 | sv_utf8_upgrade_nomg(right); |
| 6f1401dc | 293 | rpv = SvPV_nomg_const(right, rlen); |
| 69b47968 | 294 | } |
| e3393f51 | 295 | SPAGAIN; |
| a0d0e21e | 296 | } |
| 8d6d96c1 | 297 | sv_catpvn_nomg(TARG, rpv, rlen); |
| 43ebc500 | 298 | |
| a0d0e21e LW |
299 | SETTARG; |
| 300 | RETURN; | |
| 748a9306 | 301 | } |
| a0d0e21e LW |
302 | } |
| 303 | ||
| 304 | PP(pp_padsv) | |
| 305 | { | |
| 97aff369 | 306 | dVAR; dSP; dTARGET; |
| a0d0e21e | 307 | XPUSHs(TARG); |
| 533c011a NIS |
308 | if (PL_op->op_flags & OPf_MOD) { |
| 309 | if (PL_op->op_private & OPpLVAL_INTRO) | |
| 952306ac RGS |
310 | if (!(PL_op->op_private & OPpPAD_STATE)) |
| 311 | SAVECLEARSV(PAD_SVl(PL_op->op_targ)); | |
| a62b51b8 | 312 | if (PL_op->op_private & OPpDEREF) { |
| 8ec5e241 | 313 | PUTBACK; |
| dd2155a4 | 314 | vivify_ref(PAD_SVl(PL_op->op_targ), PL_op->op_private & OPpDEREF); |
| 8ec5e241 NIS |
315 | SPAGAIN; |
| 316 | } | |
| 4633a7c4 | 317 | } |
| a0d0e21e LW |
318 | RETURN; |
| 319 | } | |
| 320 | ||
| 321 | PP(pp_readline) | |
| 322 | { | |
| 97aff369 | 323 | dVAR; |
| 9e27fd70 | 324 | dSP; SvGETMAGIC(TOPs); |
| 9426e1a5 | 325 | tryAMAGICunTARGET(iter_amg, 0, 0); |
| 159b6efe | 326 | PL_last_in_gv = MUTABLE_GV(*PL_stack_sp--); |
| 6e592b3a BM |
327 | if (!isGV_with_GP(PL_last_in_gv)) { |
| 328 | if (SvROK(PL_last_in_gv) && isGV_with_GP(SvRV(PL_last_in_gv))) | |
| 159b6efe | 329 | PL_last_in_gv = MUTABLE_GV(SvRV(PL_last_in_gv)); |
| 8efb3254 | 330 | else { |
| f5284f61 | 331 | dSP; |
| ad64d0ec | 332 | XPUSHs(MUTABLE_SV(PL_last_in_gv)); |
| f5284f61 | 333 | PUTBACK; |
| 897d3989 | 334 | Perl_pp_rv2gv(aTHX); |
| 159b6efe | 335 | PL_last_in_gv = MUTABLE_GV(*PL_stack_sp--); |
| f5284f61 IZ |
336 | } |
| 337 | } | |
| a0d0e21e LW |
338 | return do_readline(); |
| 339 | } | |
| 340 | ||
| 341 | PP(pp_eq) | |
| 342 | { | |
| 6f1401dc | 343 | dVAR; dSP; |
| a42d0242 | 344 | tryAMAGICbin_MG(eq_amg, AMGf_set|AMGf_numeric); |
| 4c9fe80f | 345 | #ifndef NV_PRESERVES_UV |
| ed3b9b3c | 346 | if (SvROK(TOPs) && !SvAMAGIC(TOPs) && SvROK(TOPm1s) && !SvAMAGIC(TOPm1s)) { |
| e61d22ef NC |
347 | SP--; |
| 348 | SETs(boolSV(SvRV(TOPs) == SvRV(TOPp1s))); | |
| 4c9fe80f AS |
349 | RETURN; |
| 350 | } | |
| 351 | #endif | |
| 28e5dec8 | 352 | #ifdef PERL_PRESERVE_IVUV |
| 6f1401dc | 353 | SvIV_please_nomg(TOPs); |
| 28e5dec8 | 354 | if (SvIOK(TOPs)) { |
| 4c9fe80f AS |
355 | /* Unless the left argument is integer in range we are going |
| 356 | to have to use NV maths. Hence only attempt to coerce the | |
| 357 | right argument if we know the left is integer. */ | |
| 6f1401dc | 358 | SvIV_please_nomg(TOPm1s); |
| 28e5dec8 | 359 | if (SvIOK(TOPm1s)) { |
| 0bd48802 AL |
360 | const bool auvok = SvUOK(TOPm1s); |
| 361 | const bool buvok = SvUOK(TOPs); | |
| a12c0f56 | 362 | |
| 1605159e NC |
363 | if (auvok == buvok) { /* ## IV == IV or UV == UV ## */ |
| 364 | /* Casting IV to UV before comparison isn't going to matter | |
| 365 | on 2s complement. On 1s complement or sign&magnitude | |
| 366 | (if we have any of them) it could to make negative zero | |
| 367 | differ from normal zero. As I understand it. (Need to | |
| 368 | check - is negative zero implementation defined behaviour | |
| 369 | anyway?). NWC */ | |
| 0bd48802 AL |
370 | const UV buv = SvUVX(POPs); |
| 371 | const UV auv = SvUVX(TOPs); | |
| 28e5dec8 | 372 | |
| 28e5dec8 JH |
373 | SETs(boolSV(auv == buv)); |
| 374 | RETURN; | |
| 375 | } | |
| 376 | { /* ## Mixed IV,UV ## */ | |
| 1605159e | 377 | SV *ivp, *uvp; |
| 28e5dec8 | 378 | IV iv; |
| 28e5dec8 | 379 | |
| 1605159e | 380 | /* == is commutative so doesn't matter which is left or right */ |
| 28e5dec8 | 381 | if (auvok) { |
| 1605159e NC |
382 | /* top of stack (b) is the iv */ |
| 383 | ivp = *SP; | |
| 384 | uvp = *--SP; | |
| 385 | } else { | |
| 386 | uvp = *SP; | |
| 387 | ivp = *--SP; | |
| 388 | } | |
| 389 | iv = SvIVX(ivp); | |
| d4c19fe8 | 390 | if (iv < 0) |
| 1605159e NC |
391 | /* As uv is a UV, it's >0, so it cannot be == */ |
| 392 | SETs(&PL_sv_no); | |
| d4c19fe8 AL |
393 | else |
| 394 | /* we know iv is >= 0 */ | |
| 395 | SETs(boolSV((UV)iv == SvUVX(uvp))); | |
| 28e5dec8 JH |
396 | RETURN; |
| 397 | } | |
| 398 | } | |
| 399 | } | |
| 400 | #endif | |
| a0d0e21e | 401 | { |
| cab190d4 | 402 | #if defined(NAN_COMPARE_BROKEN) && defined(Perl_isnan) |
| 6f1401dc | 403 | dPOPTOPnnrl_nomg; |
| cab190d4 JD |
404 | if (Perl_isnan(left) || Perl_isnan(right)) |
| 405 | RETSETNO; | |
| 406 | SETs(boolSV(left == right)); | |
| 407 | #else | |
| 6f1401dc DM |
408 | dPOPnv_nomg; |
| 409 | SETs(boolSV(SvNV_nomg(TOPs) == value)); | |
| cab190d4 | 410 | #endif |
| a0d0e21e LW |
411 | RETURN; |
| 412 | } | |
| 413 | } | |
| 414 | ||
| 415 | PP(pp_preinc) | |
| 416 | { | |
| 97aff369 | 417 | dVAR; dSP; |
| 6e592b3a | 418 | if (SvTYPE(TOPs) >= SVt_PVAV || isGV_with_GP(TOPs)) |
| 6ad8f254 | 419 | Perl_croak_no_modify(aTHX); |
| 3510b4a1 NC |
420 | if (!SvREADONLY(TOPs) && SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) |
| 421 | && SvIVX(TOPs) != IV_MAX) | |
| 55497cff | 422 | { |
| 45977657 | 423 | SvIV_set(TOPs, SvIVX(TOPs) + 1); |
| 55497cff | 424 | SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK); |
| 748a9306 | 425 | } |
| 28e5dec8 | 426 | else /* Do all the PERL_PRESERVE_IVUV conditionals in sv_inc */ |
| 748a9306 | 427 | sv_inc(TOPs); |
| a0d0e21e LW |
428 | SvSETMAGIC(TOPs); |
| 429 | return NORMAL; | |
| 430 | } | |
| 431 | ||
| 432 | PP(pp_or) | |
| 433 | { | |
| 97aff369 | 434 | dVAR; dSP; |
| f410a211 | 435 | PERL_ASYNC_CHECK(); |
| a0d0e21e LW |
436 | if (SvTRUE(TOPs)) |
| 437 | RETURN; | |
| 438 | else { | |
| c960fc3b SP |
439 | if (PL_op->op_type == OP_OR) |
| 440 | --SP; | |
| a0d0e21e LW |
441 | RETURNOP(cLOGOP->op_other); |
| 442 | } | |
| 443 | } | |
| 444 | ||
| 25a55bd7 | 445 | PP(pp_defined) |
| c963b151 | 446 | { |
| 97aff369 | 447 | dVAR; dSP; |
| 6136c704 AL |
448 | register SV* sv; |
| 449 | bool defined; | |
| 25a55bd7 | 450 | const int op_type = PL_op->op_type; |
| ea5195b7 | 451 | const bool is_dor = (op_type == OP_DOR || op_type == OP_DORASSIGN); |
| c963b151 | 452 | |
| 6136c704 | 453 | if (is_dor) { |
| f410a211 | 454 | PERL_ASYNC_CHECK(); |
| 25a55bd7 SP |
455 | sv = TOPs; |
| 456 | if (!sv || !SvANY(sv)) { | |
| 2bd49cfc NC |
457 | if (op_type == OP_DOR) |
| 458 | --SP; | |
| 25a55bd7 SP |
459 | RETURNOP(cLOGOP->op_other); |
| 460 | } | |
| b7c44293 RGS |
461 | } |
| 462 | else { | |
| 463 | /* OP_DEFINED */ | |
| 25a55bd7 SP |
464 | sv = POPs; |
| 465 | if (!sv || !SvANY(sv)) | |
| 466 | RETPUSHNO; | |
| b7c44293 | 467 | } |
| 25a55bd7 | 468 | |
| 6136c704 | 469 | defined = FALSE; |
| c963b151 BD |
470 | switch (SvTYPE(sv)) { |
| 471 | case SVt_PVAV: | |
| 472 | if (AvMAX(sv) >= 0 || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied))) | |
| 25a55bd7 | 473 | defined = TRUE; |
| c963b151 BD |
474 | break; |
| 475 | case SVt_PVHV: | |
| 476 | if (HvARRAY(sv) || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv, PERL_MAGIC_tied))) | |
| 25a55bd7 | 477 | defined = TRUE; |
| c963b151 BD |
478 | break; |
| 479 | case SVt_PVCV: | |
| 480 | if (CvROOT(sv) || CvXSUB(sv)) | |
| 25a55bd7 | 481 | defined = TRUE; |
| c963b151 BD |
482 | break; |
| 483 | default: | |
| 5b295bef | 484 | SvGETMAGIC(sv); |
| c963b151 | 485 | if (SvOK(sv)) |
| 25a55bd7 | 486 | defined = TRUE; |
| 6136c704 | 487 | break; |
| c963b151 | 488 | } |
| 6136c704 AL |
489 | |
| 490 | if (is_dor) { | |
| c960fc3b SP |
491 | if(defined) |
| 492 | RETURN; | |
| 493 | if(op_type == OP_DOR) | |
| 494 | --SP; | |
| 25a55bd7 | 495 | RETURNOP(cLOGOP->op_other); |
| 25a55bd7 | 496 | } |
| d9aa96a4 SP |
497 | /* assuming OP_DEFINED */ |
| 498 | if(defined) | |
| 499 | RETPUSHYES; | |
| 500 | RETPUSHNO; | |
| c963b151 BD |
501 | } |
| 502 | ||
| a0d0e21e LW |
503 | PP(pp_add) |
| 504 | { | |
| 800401ee | 505 | dVAR; dSP; dATARGET; bool useleft; SV *svl, *svr; |
| 6f1401dc DM |
506 | tryAMAGICbin_MG(add_amg, AMGf_assign|AMGf_numeric); |
| 507 | svr = TOPs; | |
| 508 | svl = TOPm1s; | |
| 509 | ||
| 800401ee | 510 | useleft = USE_LEFT(svl); |
| 28e5dec8 JH |
511 | #ifdef PERL_PRESERVE_IVUV |
| 512 | /* We must see if we can perform the addition with integers if possible, | |
| 513 | as the integer code detects overflow while the NV code doesn't. | |
| 514 | If either argument hasn't had a numeric conversion yet attempt to get | |
| 515 | the IV. It's important to do this now, rather than just assuming that | |
| 516 | it's not IOK as a PV of "9223372036854775806" may not take well to NV | |
| 517 | addition, and an SV which is NOK, NV=6.0 ought to be coerced to | |
| 518 | integer in case the second argument is IV=9223372036854775806 | |
| 519 | We can (now) rely on sv_2iv to do the right thing, only setting the | |
| 520 | public IOK flag if the value in the NV (or PV) slot is truly integer. | |
| 521 | ||
| 522 | A side effect is that this also aggressively prefers integer maths over | |
| 7dca457a NC |
523 | fp maths for integer values. |
| 524 | ||
| a00b5bd3 | 525 | How to detect overflow? |
| 7dca457a NC |
526 | |
| 527 | C 99 section 6.2.6.1 says | |
| 528 | ||
| 529 | The range of nonnegative values of a signed integer type is a subrange | |
| 530 | of the corresponding unsigned integer type, and the representation of | |
| 531 | the same value in each type is the same. A computation involving | |
| 532 | unsigned operands can never overflow, because a result that cannot be | |
| 533 | represented by the resulting unsigned integer type is reduced modulo | |
| 534 | the number that is one greater than the largest value that can be | |
| 535 | represented by the resulting type. | |
| 536 | ||
| 537 | (the 9th paragraph) | |
| 538 | ||
| 539 | which I read as "unsigned ints wrap." | |
| 540 | ||
| 541 | signed integer overflow seems to be classed as "exception condition" | |
| 542 | ||
| 543 | If an exceptional condition occurs during the evaluation of an | |
| 544 | expression (that is, if the result is not mathematically defined or not | |
| 545 | in the range of representable values for its type), the behavior is | |
| 546 | undefined. | |
| 547 | ||
| 548 | (6.5, the 5th paragraph) | |
| 549 | ||
| 550 | I had assumed that on 2s complement machines signed arithmetic would | |
| 551 | wrap, hence coded pp_add and pp_subtract on the assumption that | |
| 552 | everything perl builds on would be happy. After much wailing and | |
| 553 | gnashing of teeth it would seem that irix64 knows its ANSI spec well, | |
| 554 | knows that it doesn't need to, and doesn't. Bah. Anyway, the all- | |
| 555 | unsigned code below is actually shorter than the old code. :-) | |
| 556 | */ | |
| 557 | ||
| 6f1401dc DM |
558 | SvIV_please_nomg(svr); |
| 559 | ||
| 800401ee | 560 | if (SvIOK(svr)) { |
| 28e5dec8 JH |
561 | /* Unless the left argument is integer in range we are going to have to |
| 562 | use NV maths. Hence only attempt to coerce the right argument if | |
| 563 | we know the left is integer. */ | |
| 9c5ffd7c JH |
564 | register UV auv = 0; |
| 565 | bool auvok = FALSE; | |
| 7dca457a NC |
566 | bool a_valid = 0; |
| 567 | ||
| 28e5dec8 | 568 | if (!useleft) { |
| 7dca457a NC |
569 | auv = 0; |
| 570 | a_valid = auvok = 1; | |
| 571 | /* left operand is undef, treat as zero. + 0 is identity, | |
| 572 | Could SETi or SETu right now, but space optimise by not adding | |
| 573 | lots of code to speed up what is probably a rarish case. */ | |
| 574 | } else { | |
| 575 | /* Left operand is defined, so is it IV? */ | |
| 6f1401dc | 576 | SvIV_please_nomg(svl); |
| 800401ee JH |
577 | if (SvIOK(svl)) { |
| 578 | if ((auvok = SvUOK(svl))) | |
| 579 | auv = SvUVX(svl); | |
| 7dca457a | 580 | else { |
| 800401ee | 581 | register const IV aiv = SvIVX(svl); |
| 7dca457a NC |
582 | if (aiv >= 0) { |
| 583 | auv = aiv; | |
| 584 | auvok = 1; /* Now acting as a sign flag. */ | |
| 585 | } else { /* 2s complement assumption for IV_MIN */ | |
| 586 | auv = (UV)-aiv; | |
| 587 | } | |
| 588 | } | |
| 589 | a_valid = 1; | |
| 28e5dec8 JH |
590 | } |
| 591 | } | |
| 7dca457a NC |
592 | if (a_valid) { |
| 593 | bool result_good = 0; | |
| 594 | UV result; | |
| 595 | register UV buv; | |
| 800401ee | 596 | bool buvok = SvUOK(svr); |
| a00b5bd3 | 597 | |
| 7dca457a | 598 | if (buvok) |
| 800401ee | 599 | buv = SvUVX(svr); |
| 7dca457a | 600 | else { |
| 800401ee | 601 | register const IV biv = SvIVX(svr); |
| 7dca457a NC |
602 | if (biv >= 0) { |
| 603 | buv = biv; | |
| 604 | buvok = 1; | |
| 605 | } else | |
| 606 | buv = (UV)-biv; | |
| 607 | } | |
| 608 | /* ?uvok if value is >= 0. basically, flagged as UV if it's +ve, | |
| 602f51c4 | 609 | else "IV" now, independent of how it came in. |
| 7dca457a NC |
610 | if a, b represents positive, A, B negative, a maps to -A etc |
| 611 | a + b => (a + b) | |
| 612 | A + b => -(a - b) | |
| 613 | a + B => (a - b) | |
| 614 | A + B => -(a + b) | |
| 615 | all UV maths. negate result if A negative. | |
| 616 | add if signs same, subtract if signs differ. */ | |
| 617 | ||
| 618 | if (auvok ^ buvok) { | |
| 619 | /* Signs differ. */ | |
| 620 | if (auv >= buv) { | |
| 621 | result = auv - buv; | |
| 622 | /* Must get smaller */ | |
| 623 | if (result <= auv) | |
| 624 | result_good = 1; | |
| 625 | } else { | |
| 626 | result = buv - auv; | |
| 627 | if (result <= buv) { | |
| 628 | /* result really should be -(auv-buv). as its negation | |
| 629 | of true value, need to swap our result flag */ | |
| 630 | auvok = !auvok; | |
| 631 | result_good = 1; | |
| 28e5dec8 JH |
632 | } |
| 633 | } | |
| 7dca457a NC |
634 | } else { |
| 635 | /* Signs same */ | |
| 636 | result = auv + buv; | |
| 637 | if (result >= auv) | |
| 638 | result_good = 1; | |
| 639 | } | |
| 640 | if (result_good) { | |
| 641 | SP--; | |
| 642 | if (auvok) | |
| 28e5dec8 | 643 | SETu( result ); |
| 7dca457a NC |
644 | else { |
| 645 | /* Negate result */ | |
| 646 | if (result <= (UV)IV_MIN) | |
| 647 | SETi( -(IV)result ); | |
| 648 | else { | |
| 649 | /* result valid, but out of range for IV. */ | |
| 650 | SETn( -(NV)result ); | |
| 28e5dec8 JH |
651 | } |
| 652 | } | |
| 7dca457a NC |
653 | RETURN; |
| 654 | } /* Overflow, drop through to NVs. */ | |
| 28e5dec8 JH |
655 | } |
| 656 | } | |
| 657 | #endif | |
| a0d0e21e | 658 | { |
| 6f1401dc | 659 | NV value = SvNV_nomg(svr); |
| 4efa5a16 | 660 | (void)POPs; |
| 28e5dec8 JH |
661 | if (!useleft) { |
| 662 | /* left operand is undef, treat as zero. + 0.0 is identity. */ | |
| 663 | SETn(value); | |
| 664 | RETURN; | |
| 665 | } | |
| 6f1401dc | 666 | SETn( value + SvNV_nomg(svl) ); |
| 28e5dec8 | 667 | RETURN; |
| a0d0e21e LW |
668 | } |
| 669 | } | |
| 670 | ||
| 671 | PP(pp_aelemfast) | |
| 672 | { | |
| 97aff369 | 673 | dVAR; dSP; |
| 502c6561 | 674 | AV * const av = PL_op->op_flags & OPf_SPECIAL |
| 8f878375 | 675 | ? MUTABLE_AV(PAD_SV(PL_op->op_targ)) : GvAVn(cGVOP_gv); |
| a3b680e6 | 676 | const U32 lval = PL_op->op_flags & OPf_MOD; |
| 0bd48802 | 677 | SV** const svp = av_fetch(av, PL_op->op_private, lval); |
| 3280af22 | 678 | SV *sv = (svp ? *svp : &PL_sv_undef); |
| 6ff81951 | 679 | EXTEND(SP, 1); |
| 39cf747a | 680 | if (!lval && SvRMAGICAL(av) && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
| fd69380d | 681 | mg_get(sv); |
| be6c24e0 | 682 | PUSHs(sv); |
| a0d0e21e LW |
683 | RETURN; |
| 684 | } | |
| 685 | ||
| 686 | PP(pp_join) | |
| 687 | { | |
| 97aff369 | 688 | dVAR; dSP; dMARK; dTARGET; |
| a0d0e21e LW |
689 | MARK++; |
| 690 | do_join(TARG, *MARK, MARK, SP); | |
| 691 | SP = MARK; | |
| 692 | SETs(TARG); | |
| 693 | RETURN; | |
| 694 | } | |
| 695 | ||
| 696 | PP(pp_pushre) | |
| 697 | { | |
| 97aff369 | 698 | dVAR; dSP; |
| 44a8e56a | 699 | #ifdef DEBUGGING |
| 700 | /* | |
| 701 | * We ass_u_me that LvTARGOFF() comes first, and that two STRLENs | |
| 702 | * will be enough to hold an OP*. | |
| 703 | */ | |
| c4420975 | 704 | SV* const sv = sv_newmortal(); |
| 44a8e56a | 705 | sv_upgrade(sv, SVt_PVLV); |
| 706 | LvTYPE(sv) = '/'; | |
| 533c011a | 707 | Copy(&PL_op, &LvTARGOFF(sv), 1, OP*); |
| 44a8e56a | 708 | XPUSHs(sv); |
| 709 | #else | |
| ad64d0ec | 710 | XPUSHs(MUTABLE_SV(PL_op)); |
| 44a8e56a | 711 | #endif |
| a0d0e21e LW |
712 | RETURN; |
| 713 | } | |
| 714 | ||
| 715 | /* Oversized hot code. */ | |
| 716 | ||
| 717 | PP(pp_print) | |
| 718 | { | |
| 27da23d5 | 719 | dVAR; dSP; dMARK; dORIGMARK; |
| 760ac839 | 720 | register PerlIO *fp; |
| 236988e4 | 721 | MAGIC *mg; |
| 159b6efe NC |
722 | GV * const gv |
| 723 | = (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv; | |
| 9c9f25b8 | 724 | IO *io = GvIO(gv); |
| 5b468f54 | 725 | |
| 9c9f25b8 | 726 | if (io |
| ad64d0ec | 727 | && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) |
| 5b468f54 | 728 | { |
| 01bb7c6d | 729 | had_magic: |
| 68dc0745 | 730 | if (MARK == ORIGMARK) { |
| 1c846c1f | 731 | /* If using default handle then we need to make space to |
| a60c0954 NIS |
732 | * pass object as 1st arg, so move other args up ... |
| 733 | */ | |
| 4352c267 | 734 | MEXTEND(SP, 1); |
| 68dc0745 | 735 | ++MARK; |
| 736 | Move(MARK, MARK + 1, (SP - MARK) + 1, SV*); | |
| 737 | ++SP; | |
| 738 | } | |
| 94bc412f NC |
739 | return Perl_tied_method(aTHX_ "PRINT", mark - 1, MUTABLE_SV(io), |
| 740 | mg, | |
| 741 | (G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK | |
| 742 | | (PL_op->op_type == OP_SAY | |
| 743 | ? TIED_METHOD_SAY : 0)), sp - mark); | |
| 236988e4 | 744 | } |
| 9c9f25b8 | 745 | if (!io) { |
| 68b590d9 | 746 | if ( gv && GvEGVx(gv) && (io = GvIO(GvEGV(gv))) |
| ad64d0ec | 747 | && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) |
| 01bb7c6d | 748 | goto had_magic; |
| 51087808 | 749 | report_evil_fh(gv); |
| 93189314 | 750 | SETERRNO(EBADF,RMS_IFI); |
| a0d0e21e LW |
751 | goto just_say_no; |
| 752 | } | |
| 753 | else if (!(fp = IoOFP(io))) { | |
| 7716c5c5 NC |
754 | if (IoIFP(io)) |
| 755 | report_wrongway_fh(gv, '<'); | |
| 51087808 | 756 | else |
| 7716c5c5 | 757 | report_evil_fh(gv); |
| 93189314 | 758 | SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI); |
| a0d0e21e LW |
759 | goto just_say_no; |
| 760 | } | |
| 761 | else { | |
| e23d9e2f | 762 | SV * const ofs = GvSV(PL_ofsgv); /* $, */ |
| a0d0e21e | 763 | MARK++; |
| e23d9e2f | 764 | if (ofs && (SvGMAGICAL(ofs) || SvOK(ofs))) { |
| a0d0e21e LW |
765 | while (MARK <= SP) { |
| 766 | if (!do_print(*MARK, fp)) | |
| 767 | break; | |
| 768 | MARK++; | |
| 769 | if (MARK <= SP) { | |
| e23d9e2f CS |
770 | /* don't use 'ofs' here - it may be invalidated by magic callbacks */ |
| 771 | if (!do_print(GvSV(PL_ofsgv), fp)) { | |
| a0d0e21e LW |
772 | MARK--; |
| 773 | break; | |
| 774 | } | |
| 775 | } | |
| 776 | } | |
| 777 | } | |
| 778 | else { | |
| 779 | while (MARK <= SP) { | |
| 780 | if (!do_print(*MARK, fp)) | |
| 781 | break; | |
| 782 | MARK++; | |
| 783 | } | |
| 784 | } | |
| 785 | if (MARK <= SP) | |
| 786 | goto just_say_no; | |
| 787 | else { | |
| cfc4a7da GA |
788 | if (PL_op->op_type == OP_SAY) { |
| 789 | if (PerlIO_write(fp, "\n", 1) == 0 || PerlIO_error(fp)) | |
| 790 | goto just_say_no; | |
| 791 | } | |
| 792 | else if (PL_ors_sv && SvOK(PL_ors_sv)) | |
| 7889fe52 | 793 | if (!do_print(PL_ors_sv, fp)) /* $\ */ |
| a0d0e21e LW |
794 | goto just_say_no; |
| 795 | ||
| 796 | if (IoFLAGS(io) & IOf_FLUSH) | |
| 760ac839 | 797 | if (PerlIO_flush(fp) == EOF) |
| a0d0e21e LW |
798 | goto just_say_no; |
| 799 | } | |
| 800 | } | |
| 801 | SP = ORIGMARK; | |
| e52fd6f4 | 802 | XPUSHs(&PL_sv_yes); |
| a0d0e21e LW |
803 | RETURN; |
| 804 | ||
| 805 | just_say_no: | |
| 806 | SP = ORIGMARK; | |
| e52fd6f4 | 807 | XPUSHs(&PL_sv_undef); |
| a0d0e21e LW |
808 | RETURN; |
| 809 | } | |
| 810 | ||
| 811 | PP(pp_rv2av) | |
| 812 | { | |
| 97aff369 | 813 | dVAR; dSP; dTOPss; |
| cde874ca | 814 | const I32 gimme = GIMME_V; |
| 17ab7946 NC |
815 | static const char an_array[] = "an ARRAY"; |
| 816 | static const char a_hash[] = "a HASH"; | |
| 817 | const bool is_pp_rv2av = PL_op->op_type == OP_RV2AV; | |
| d83b45b8 | 818 | const svtype type = is_pp_rv2av ? SVt_PVAV : SVt_PVHV; |
| a0d0e21e | 819 | |
| 0824d667 DM |
820 | if (!(PL_op->op_private & OPpDEREFed)) |
| 821 | SvGETMAGIC(sv); | |
| a0d0e21e | 822 | if (SvROK(sv)) { |
| 93d7320b DM |
823 | if (SvAMAGIC(sv)) { |
| 824 | sv = amagic_deref_call(sv, is_pp_rv2av ? to_av_amg : to_hv_amg); | |
| 825 | SPAGAIN; | |
| 826 | } | |
| 17ab7946 NC |
827 | sv = SvRV(sv); |
| 828 | if (SvTYPE(sv) != type) | |
| 829 | DIE(aTHX_ "Not %s reference", is_pp_rv2av ? an_array : a_hash); | |
| 533c011a | 830 | if (PL_op->op_flags & OPf_REF) { |
| 17ab7946 | 831 | SETs(sv); |
| a0d0e21e LW |
832 | RETURN; |
| 833 | } | |
| 78f9721b | 834 | else if (LVRET) { |
| cde874ca | 835 | if (gimme != G_ARRAY) |
| 042560a6 | 836 | goto croak_cant_return; |
| 17ab7946 | 837 | SETs(sv); |
| 78f9721b SM |
838 | RETURN; |
| 839 | } | |
| 82d03984 RGS |
840 | else if (PL_op->op_flags & OPf_MOD |
| 841 | && PL_op->op_private & OPpLVAL_INTRO) | |
| f1f66076 | 842 | Perl_croak(aTHX_ "%s", PL_no_localize_ref); |
| a0d0e21e LW |
843 | } |
| 844 | else { | |
| 17ab7946 | 845 | if (SvTYPE(sv) == type) { |
| 533c011a | 846 | if (PL_op->op_flags & OPf_REF) { |
| 17ab7946 | 847 | SETs(sv); |
| a0d0e21e LW |
848 | RETURN; |
| 849 | } | |
| 78f9721b | 850 | else if (LVRET) { |
| cde874ca | 851 | if (gimme != G_ARRAY) |
| 042560a6 | 852 | goto croak_cant_return; |
| 17ab7946 | 853 | SETs(sv); |
| 78f9721b SM |
854 | RETURN; |
| 855 | } | |
| a0d0e21e LW |
856 | } |
| 857 | else { | |
| 67955e0c | 858 | GV *gv; |
| 1c846c1f | 859 | |
| 6e592b3a | 860 | if (!isGV_with_GP(sv)) { |
| dc3c76f8 NC |
861 | gv = Perl_softref2xv(aTHX_ sv, is_pp_rv2av ? an_array : a_hash, |
| 862 | type, &sp); | |
| 863 | if (!gv) | |
| 864 | RETURN; | |
| 35cd451c GS |
865 | } |
| 866 | else { | |
| 159b6efe | 867 | gv = MUTABLE_GV(sv); |
| a0d0e21e | 868 | } |
| ad64d0ec | 869 | sv = is_pp_rv2av ? MUTABLE_SV(GvAVn(gv)) : MUTABLE_SV(GvHVn(gv)); |
| 533c011a | 870 | if (PL_op->op_private & OPpLVAL_INTRO) |
| ad64d0ec | 871 | sv = is_pp_rv2av ? MUTABLE_SV(save_ary(gv)) : MUTABLE_SV(save_hash(gv)); |
| 533c011a | 872 | if (PL_op->op_flags & OPf_REF) { |
| 17ab7946 | 873 | SETs(sv); |
| a0d0e21e LW |
874 | RETURN; |
| 875 | } | |
| 78f9721b | 876 | else if (LVRET) { |
| cde874ca | 877 | if (gimme != G_ARRAY) |
| 042560a6 | 878 | goto croak_cant_return; |
| 17ab7946 | 879 | SETs(sv); |
| 78f9721b SM |
880 | RETURN; |
| 881 | } | |
| a0d0e21e LW |
882 | } |
| 883 | } | |
| 884 | ||
| 17ab7946 | 885 | if (is_pp_rv2av) { |
| 502c6561 | 886 | AV *const av = MUTABLE_AV(sv); |
| 486ec47a | 887 | /* The guts of pp_rv2av, with no intending change to preserve history |
| 17ab7946 NC |
888 | (until such time as we get tools that can do blame annotation across |
| 889 | whitespace changes. */ | |
| 96913b52 VP |
890 | if (gimme == G_ARRAY) { |
| 891 | const I32 maxarg = AvFILL(av) + 1; | |
| 892 | (void)POPs; /* XXXX May be optimized away? */ | |
| 893 | EXTEND(SP, maxarg); | |
| 894 | if (SvRMAGICAL(av)) { | |
| 895 | U32 i; | |
| 896 | for (i=0; i < (U32)maxarg; i++) { | |
| 897 | SV ** const svp = av_fetch(av, i, FALSE); | |
| 898 | /* See note in pp_helem, and bug id #27839 */ | |
| 899 | SP[i+1] = svp | |
| 900 | ? SvGMAGICAL(*svp) ? (mg_get(*svp), *svp) : *svp | |
| 901 | : &PL_sv_undef; | |
| 902 | } | |
| 903 | } | |
| 904 | else { | |
| 905 | Copy(AvARRAY(av), SP+1, maxarg, SV*); | |
| 93965878 | 906 | } |
| 96913b52 | 907 | SP += maxarg; |
| 1c846c1f | 908 | } |
| 96913b52 VP |
909 | else if (gimme == G_SCALAR) { |
| 910 | dTARGET; | |
| 911 | const I32 maxarg = AvFILL(av) + 1; | |
| 912 | SETi(maxarg); | |
| 93965878 | 913 | } |
| 17ab7946 NC |
914 | } else { |
| 915 | /* The guts of pp_rv2hv */ | |
| 96913b52 VP |
916 | if (gimme == G_ARRAY) { /* array wanted */ |
| 917 | *PL_stack_sp = sv; | |
| 981b7185 | 918 | return Perl_do_kv(aTHX); |
| 96913b52 VP |
919 | } |
| 920 | else if (gimme == G_SCALAR) { | |
| 921 | dTARGET; | |
| 922 | TARG = Perl_hv_scalar(aTHX_ MUTABLE_HV(sv)); | |
| 923 | SPAGAIN; | |
| 924 | SETTARG; | |
| 925 | } | |
| 17ab7946 | 926 | } |
| be85d344 | 927 | RETURN; |
| 042560a6 NC |
928 | |
| 929 | croak_cant_return: | |
| 930 | Perl_croak(aTHX_ "Can't return %s to lvalue scalar context", | |
| 931 | is_pp_rv2av ? "array" : "hash"); | |
| 77e217c6 | 932 | RETURN; |
| a0d0e21e LW |
933 | } |
| 934 | ||
| 10c8fecd GS |
935 | STATIC void |
| 936 | S_do_oddball(pTHX_ HV *hash, SV **relem, SV **firstrelem) | |
| 937 | { | |
| 97aff369 | 938 | dVAR; |
| 7918f24d NC |
939 | |
| 940 | PERL_ARGS_ASSERT_DO_ODDBALL; | |
| 941 | ||
| 10c8fecd GS |
942 | if (*relem) { |
| 943 | SV *tmpstr; | |
| b464bac0 | 944 | const HE *didstore; |
| 6d822dc4 MS |
945 | |
| 946 | if (ckWARN(WARN_MISC)) { | |
| a3b680e6 | 947 | const char *err; |
| 10c8fecd GS |
948 | if (relem == firstrelem && |
| 949 | SvROK(*relem) && | |
| 950 | (SvTYPE(SvRV(*relem)) == SVt_PVAV || | |
| 951 | SvTYPE(SvRV(*relem)) == SVt_PVHV)) | |
| 952 | { | |
| a3b680e6 | 953 | err = "Reference found where even-sized list expected"; |
| 10c8fecd GS |
954 | } |
| 955 | else | |
| a3b680e6 | 956 | err = "Odd number of elements in hash assignment"; |
| f1f66076 | 957 | Perl_warner(aTHX_ packWARN(WARN_MISC), "%s", err); |
| 10c8fecd | 958 | } |
| 6d822dc4 | 959 | |
| 561b68a9 | 960 | tmpstr = newSV(0); |
| 6d822dc4 MS |
961 | didstore = hv_store_ent(hash,*relem,tmpstr,0); |
| 962 | if (SvMAGICAL(hash)) { | |
| 963 | if (SvSMAGICAL(tmpstr)) | |
| 964 | mg_set(tmpstr); | |
| 965 | if (!didstore) | |
| 966 | sv_2mortal(tmpstr); | |
| 967 | } | |
| 968 | TAINT_NOT; | |
| 10c8fecd GS |
969 | } |
| 970 | } | |
| 971 | ||
| a0d0e21e LW |
972 | PP(pp_aassign) |
| 973 | { | |
| 27da23d5 | 974 | dVAR; dSP; |
| 3280af22 NIS |
975 | SV **lastlelem = PL_stack_sp; |
| 976 | SV **lastrelem = PL_stack_base + POPMARK; | |
| 977 | SV **firstrelem = PL_stack_base + POPMARK + 1; | |
| a0d0e21e LW |
978 | SV **firstlelem = lastrelem + 1; |
| 979 | ||
| 980 | register SV **relem; | |
| 981 | register SV **lelem; | |
| 982 | ||
| 983 | register SV *sv; | |
| 984 | register AV *ary; | |
| 985 | ||
| 54310121 | 986 | I32 gimme; |
| a0d0e21e LW |
987 | HV *hash; |
| 988 | I32 i; | |
| 989 | int magic; | |
| ca65944e | 990 | int duplicates = 0; |
| cbbf8932 | 991 | SV **firsthashrelem = NULL; /* "= 0" keeps gcc 2.95 quiet */ |
| 5637b936 | 992 | |
| 3280af22 | 993 | PL_delaymagic = DM_DELAY; /* catch simultaneous items */ |
| ca65944e | 994 | gimme = GIMME_V; |
| a0d0e21e LW |
995 | |
| 996 | /* If there's a common identifier on both sides we have to take | |
| 997 | * special care that assigning the identifier on the left doesn't | |
| 998 | * clobber a value on the right that's used later in the list. | |
| acdea6f0 | 999 | * Don't bother if LHS is just an empty hash or array. |
| a0d0e21e | 1000 | */ |
| acdea6f0 DM |
1001 | |
| 1002 | if ( (PL_op->op_private & OPpASSIGN_COMMON) | |
| 1003 | && ( | |
| 1004 | firstlelem != lastlelem | |
| 1005 | || ! ((sv = *firstlelem)) | |
| 1006 | || SvMAGICAL(sv) | |
| 1007 | || ! (SvTYPE(sv) == SVt_PVAV || SvTYPE(sv) == SVt_PVHV) | |
| 1008 | || (SvTYPE(sv) == SVt_PVAV && AvFILL((AV*)sv) != -1) | |
| 1b95d04f | 1009 | || (SvTYPE(sv) == SVt_PVHV && HvUSEDKEYS((HV*)sv) != 0) |
| acdea6f0 DM |
1010 | ) |
| 1011 | ) { | |
| cc5e57d2 | 1012 | EXTEND_MORTAL(lastrelem - firstrelem + 1); |
| 10c8fecd | 1013 | for (relem = firstrelem; relem <= lastrelem; relem++) { |
| 155aba94 | 1014 | if ((sv = *relem)) { |
| a1f49e72 | 1015 | TAINT_NOT; /* Each item is independent */ |
| 61e5f455 NC |
1016 | |
| 1017 | /* Dear TODO test in t/op/sort.t, I love you. | |
| 1018 | (It's relying on a panic, not a "semi-panic" from newSVsv() | |
| 1019 | and then an assertion failure below.) */ | |
| 1020 | if (SvIS_FREED(sv)) { | |
| 1021 | Perl_croak(aTHX_ "panic: attempt to copy freed scalar %p", | |
| 1022 | (void*)sv); | |
| 1023 | } | |
| 1024 | /* Specifically *not* sv_mortalcopy(), as that will steal TEMPs, | |
| 1025 | and we need a second copy of a temp here. */ | |
| 1026 | *relem = sv_2mortal(newSVsv(sv)); | |
| a1f49e72 | 1027 | } |
| 10c8fecd | 1028 | } |
| a0d0e21e LW |
1029 | } |
| 1030 | ||
| 1031 | relem = firstrelem; | |
| 1032 | lelem = firstlelem; | |
| 4608196e RGS |
1033 | ary = NULL; |
| 1034 | hash = NULL; | |
| 10c8fecd | 1035 | |
| a0d0e21e | 1036 | while (lelem <= lastlelem) { |
| bbce6d69 | 1037 | TAINT_NOT; /* Each item stands on its own, taintwise. */ |
| a0d0e21e LW |
1038 | sv = *lelem++; |
| 1039 | switch (SvTYPE(sv)) { | |
| 1040 | case SVt_PVAV: | |
| 502c6561 | 1041 | ary = MUTABLE_AV(sv); |
| 748a9306 | 1042 | magic = SvMAGICAL(ary) != 0; |
| a0d0e21e | 1043 | av_clear(ary); |
| 7e42bd57 | 1044 | av_extend(ary, lastrelem - relem); |
| a0d0e21e LW |
1045 | i = 0; |
| 1046 | while (relem <= lastrelem) { /* gobble up all the rest */ | |
| 5117ca91 | 1047 | SV **didstore; |
| a0d0e21e | 1048 | assert(*relem); |
| 4f0556e9 NC |
1049 | sv = newSV(0); |
| 1050 | sv_setsv(sv, *relem); | |
| a0d0e21e | 1051 | *(relem++) = sv; |
| 5117ca91 GS |
1052 | didstore = av_store(ary,i++,sv); |
| 1053 | if (magic) { | |
| 8ef24240 | 1054 | if (SvSMAGICAL(sv)) |
| fb73857a | 1055 | mg_set(sv); |
| 5117ca91 | 1056 | if (!didstore) |
| 8127e0e3 | 1057 | sv_2mortal(sv); |
| 5117ca91 | 1058 | } |
| bbce6d69 | 1059 | TAINT_NOT; |
| a0d0e21e | 1060 | } |
| 354b0578 | 1061 | if (PL_delaymagic & DM_ARRAY_ISA) |
| ad64d0ec | 1062 | SvSETMAGIC(MUTABLE_SV(ary)); |
| a0d0e21e | 1063 | break; |
| 10c8fecd | 1064 | case SVt_PVHV: { /* normal hash */ |
| a0d0e21e | 1065 | SV *tmpstr; |
| 45960564 | 1066 | SV** topelem = relem; |
| a0d0e21e | 1067 | |
| 85fbaab2 | 1068 | hash = MUTABLE_HV(sv); |
| 748a9306 | 1069 | magic = SvMAGICAL(hash) != 0; |
| a0d0e21e | 1070 | hv_clear(hash); |
| ca65944e | 1071 | firsthashrelem = relem; |
| a0d0e21e LW |
1072 | |
| 1073 | while (relem < lastrelem) { /* gobble up all the rest */ | |
| 5117ca91 | 1074 | HE *didstore; |
| 6136c704 AL |
1075 | sv = *relem ? *relem : &PL_sv_no; |
| 1076 | relem++; | |
| 561b68a9 | 1077 | tmpstr = newSV(0); |
| a0d0e21e LW |
1078 | if (*relem) |
| 1079 | sv_setsv(tmpstr,*relem); /* value */ | |
| 45960564 DM |
1080 | relem++; |
| 1081 | if (gimme != G_VOID) { | |
| 1082 | if (hv_exists_ent(hash, sv, 0)) | |
| 1083 | /* key overwrites an existing entry */ | |
| 1084 | duplicates += 2; | |
| 1085 | else | |
| 1086 | if (gimme == G_ARRAY) { | |
| 1087 | /* copy element back: possibly to an earlier | |
| 1088 | * stack location if we encountered dups earlier */ | |
| 1089 | *topelem++ = sv; | |
| 1090 | *topelem++ = tmpstr; | |
| 1091 | } | |
| 1092 | } | |
| 5117ca91 GS |
1093 | didstore = hv_store_ent(hash,sv,tmpstr,0); |
| 1094 | if (magic) { | |
| 8ef24240 | 1095 | if (SvSMAGICAL(tmpstr)) |
| fb73857a | 1096 | mg_set(tmpstr); |
| 5117ca91 | 1097 | if (!didstore) |
| 8127e0e3 | 1098 | sv_2mortal(tmpstr); |
| 5117ca91 | 1099 | } |
| bbce6d69 | 1100 | TAINT_NOT; |
| 8e07c86e | 1101 | } |
| 6a0deba8 | 1102 | if (relem == lastrelem) { |
| 10c8fecd | 1103 | do_oddball(hash, relem, firstrelem); |
| 6a0deba8 | 1104 | relem++; |
| 1930e939 | 1105 | } |
| a0d0e21e LW |
1106 | } |
| 1107 | break; | |
| 1108 | default: | |
| 6fc92669 GS |
1109 | if (SvIMMORTAL(sv)) { |
| 1110 | if (relem <= lastrelem) | |
| 1111 | relem++; | |
| 1112 | break; | |
| a0d0e21e LW |
1113 | } |
| 1114 | if (relem <= lastrelem) { | |
| 1115 | sv_setsv(sv, *relem); | |
| 1116 | *(relem++) = sv; | |
| 1117 | } | |
| 1118 | else | |
| 3280af22 | 1119 | sv_setsv(sv, &PL_sv_undef); |
| 8ef24240 | 1120 | SvSETMAGIC(sv); |
| a0d0e21e LW |
1121 | break; |
| 1122 | } | |
| 1123 | } | |
| 3280af22 NIS |
1124 | if (PL_delaymagic & ~DM_DELAY) { |
| 1125 | if (PL_delaymagic & DM_UID) { | |
| a0d0e21e | 1126 | #ifdef HAS_SETRESUID |
| fb934a90 RD |
1127 | (void)setresuid((PL_delaymagic & DM_RUID) ? PL_uid : (Uid_t)-1, |
| 1128 | (PL_delaymagic & DM_EUID) ? PL_euid : (Uid_t)-1, | |
| 1129 | (Uid_t)-1); | |
| 56febc5e AD |
1130 | #else |
| 1131 | # ifdef HAS_SETREUID | |
| fb934a90 RD |
1132 | (void)setreuid((PL_delaymagic & DM_RUID) ? PL_uid : (Uid_t)-1, |
| 1133 | (PL_delaymagic & DM_EUID) ? PL_euid : (Uid_t)-1); | |
| 56febc5e AD |
1134 | # else |
| 1135 | # ifdef HAS_SETRUID | |
| b28d0864 NIS |
1136 | if ((PL_delaymagic & DM_UID) == DM_RUID) { |
| 1137 | (void)setruid(PL_uid); | |
| 1138 | PL_delaymagic &= ~DM_RUID; | |
| a0d0e21e | 1139 | } |
| 56febc5e AD |
1140 | # endif /* HAS_SETRUID */ |
| 1141 | # ifdef HAS_SETEUID | |
| b28d0864 | 1142 | if ((PL_delaymagic & DM_UID) == DM_EUID) { |
| fb934a90 | 1143 | (void)seteuid(PL_euid); |
| b28d0864 | 1144 | PL_delaymagic &= ~DM_EUID; |
| a0d0e21e | 1145 | } |
| 56febc5e | 1146 | # endif /* HAS_SETEUID */ |
| b28d0864 NIS |
1147 | if (PL_delaymagic & DM_UID) { |
| 1148 | if (PL_uid != PL_euid) | |
| cea2e8a9 | 1149 | DIE(aTHX_ "No setreuid available"); |
| b28d0864 | 1150 | (void)PerlProc_setuid(PL_uid); |
| a0d0e21e | 1151 | } |
| 56febc5e AD |
1152 | # endif /* HAS_SETREUID */ |
| 1153 | #endif /* HAS_SETRESUID */ | |
| d8eceb89 JH |
1154 | PL_uid = PerlProc_getuid(); |
| 1155 | PL_euid = PerlProc_geteuid(); | |
| a0d0e21e | 1156 | } |
| 3280af22 | 1157 | if (PL_delaymagic & DM_GID) { |
| a0d0e21e | 1158 | #ifdef HAS_SETRESGID |
| fb934a90 RD |
1159 | (void)setresgid((PL_delaymagic & DM_RGID) ? PL_gid : (Gid_t)-1, |
| 1160 | (PL_delaymagic & DM_EGID) ? PL_egid : (Gid_t)-1, | |
| 1161 | (Gid_t)-1); | |
| 56febc5e AD |
1162 | #else |
| 1163 | # ifdef HAS_SETREGID | |
| fb934a90 RD |
1164 | (void)setregid((PL_delaymagic & DM_RGID) ? PL_gid : (Gid_t)-1, |
| 1165 | (PL_delaymagic & DM_EGID) ? PL_egid : (Gid_t)-1); | |
| 56febc5e AD |
1166 | # else |
| 1167 | # ifdef HAS_SETRGID | |
| b28d0864 NIS |
1168 | if ((PL_delaymagic & DM_GID) == DM_RGID) { |
| 1169 | (void)setrgid(PL_gid); | |
| 1170 | PL_delaymagic &= ~DM_RGID; | |
| a0d0e21e | 1171 | } |
| 56febc5e AD |
1172 | # endif /* HAS_SETRGID */ |
| 1173 | # ifdef HAS_SETEGID | |
| b28d0864 | 1174 | if ((PL_delaymagic & DM_GID) == DM_EGID) { |
| fb934a90 | 1175 | (void)setegid(PL_egid); |
| b28d0864 | 1176 | PL_delaymagic &= ~DM_EGID; |
| a0d0e21e | 1177 | } |
| 56febc5e | 1178 | # endif /* HAS_SETEGID */ |
| b28d0864 NIS |
1179 | if (PL_delaymagic & DM_GID) { |
| 1180 | if (PL_gid != PL_egid) | |
| cea2e8a9 | 1181 | DIE(aTHX_ "No setregid available"); |
| b28d0864 | 1182 | (void)PerlProc_setgid(PL_gid); |
| a0d0e21e | 1183 | } |
| 56febc5e AD |
1184 | # endif /* HAS_SETREGID */ |
| 1185 | #endif /* HAS_SETRESGID */ | |
| d8eceb89 JH |
1186 | PL_gid = PerlProc_getgid(); |
| 1187 | PL_egid = PerlProc_getegid(); | |
| a0d0e21e | 1188 | } |
| 3280af22 | 1189 | PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); |
| a0d0e21e | 1190 | } |
| 3280af22 | 1191 | PL_delaymagic = 0; |
| 54310121 | 1192 | |
| 54310121 | 1193 | if (gimme == G_VOID) |
| 1194 | SP = firstrelem - 1; | |
| 1195 | else if (gimme == G_SCALAR) { | |
| 1196 | dTARGET; | |
| 1197 | SP = firstrelem; | |
| ca65944e | 1198 | SETi(lastrelem - firstrelem + 1 - duplicates); |
| 54310121 | 1199 | } |
| 1200 | else { | |
| ca65944e | 1201 | if (ary) |
| a0d0e21e | 1202 | SP = lastrelem; |
| ca65944e RGS |
1203 | else if (hash) { |
| 1204 | if (duplicates) { | |
| 45960564 DM |
1205 | /* at this point we have removed the duplicate key/value |
| 1206 | * pairs from the stack, but the remaining values may be | |
| 1207 | * wrong; i.e. with (a 1 a 2 b 3) on the stack we've removed | |
| 1208 | * the (a 2), but the stack now probably contains | |
| 1209 | * (a <freed> b 3), because { hv_save(a,1); hv_save(a,2) } | |
| 1210 | * obliterates the earlier key. So refresh all values. */ | |
| ca65944e | 1211 | lastrelem -= duplicates; |
| 45960564 DM |
1212 | relem = firsthashrelem; |
| 1213 | while (relem < lastrelem) { | |
| 1214 | HE *he; | |
| 1215 | sv = *relem++; | |
| 1216 | he = hv_fetch_ent(hash, sv, 0, 0); | |
| 1217 | *relem++ = (he ? HeVAL(he) : &PL_sv_undef); | |
| 1218 | } | |
| ca65944e RGS |
1219 | } |
| 1220 | SP = lastrelem; | |
| 1221 | } | |
| a0d0e21e LW |
1222 | else |
| 1223 | SP = firstrelem + (lastlelem - firstlelem); | |
| 0c8c7a05 | 1224 | lelem = firstlelem + (relem - firstrelem); |
| 5f05dabc | 1225 | while (relem <= SP) |
| 3280af22 | 1226 | *relem++ = (lelem <= lastlelem) ? *lelem++ : &PL_sv_undef; |
| a0d0e21e | 1227 | } |
| 08aeb9f7 | 1228 | |
| 54310121 | 1229 | RETURN; |
| a0d0e21e LW |
1230 | } |
| 1231 | ||
| 8782bef2 GB |
1232 | PP(pp_qr) |
| 1233 | { | |
| 97aff369 | 1234 | dVAR; dSP; |
| c4420975 | 1235 | register PMOP * const pm = cPMOP; |
| fe578d7f | 1236 | REGEXP * rx = PM_GETRE(pm); |
| 10599a69 | 1237 | SV * const pkg = rx ? CALLREG_PACKAGE(rx) : NULL; |
| c4420975 | 1238 | SV * const rv = sv_newmortal(); |
| 288b8c02 NC |
1239 | |
| 1240 | SvUPGRADE(rv, SVt_IV); | |
| c2123ae3 NC |
1241 | /* For a subroutine describing itself as "This is a hacky workaround" I'm |
| 1242 | loathe to use it here, but it seems to be the right fix. Or close. | |
| 1243 | The key part appears to be that it's essential for pp_qr to return a new | |
| 1244 | object (SV), which implies that there needs to be an effective way to | |
| 1245 | generate a new SV from the existing SV that is pre-compiled in the | |
| 1246 | optree. */ | |
| 1247 | SvRV_set(rv, MUTABLE_SV(reg_temp_copy(NULL, rx))); | |
| 288b8c02 NC |
1248 | SvROK_on(rv); |
| 1249 | ||
| 1250 | if (pkg) { | |
| f815daf2 | 1251 | HV *const stash = gv_stashsv(pkg, GV_ADD); |
| a954f6ee | 1252 | SvREFCNT_dec(pkg); |
| 288b8c02 NC |
1253 | (void)sv_bless(rv, stash); |
| 1254 | } | |
| 1255 | ||
| 9274aefd | 1256 | if (RX_EXTFLAGS(rx) & RXf_TAINTED) { |
| e08e52cf | 1257 | SvTAINTED_on(rv); |
| 9274aefd DM |
1258 | SvTAINTED_on(SvRV(rv)); |
| 1259 | } | |
| c8c13c22 JB |
1260 | XPUSHs(rv); |
| 1261 | RETURN; | |
| 8782bef2 GB |
1262 | } |
| 1263 | ||
| a0d0e21e LW |
1264 | PP(pp_match) |
| 1265 | { | |
| 97aff369 | 1266 | dVAR; dSP; dTARG; |
| a0d0e21e | 1267 | register PMOP *pm = cPMOP; |
| d65afb4b | 1268 | PMOP *dynpm = pm; |
| 0d46e09a SP |
1269 | register const char *t; |
| 1270 | register const char *s; | |
| 5c144d81 | 1271 | const char *strend; |
| a0d0e21e | 1272 | I32 global; |
| 1ed74d04 | 1273 | U8 r_flags = REXEC_CHECKED; |
| 5c144d81 | 1274 | const char *truebase; /* Start of string */ |
| aaa362c4 | 1275 | register REGEXP *rx = PM_GETRE(pm); |
| b3eb6a9b | 1276 | bool rxtainted; |
| a3b680e6 | 1277 | const I32 gimme = GIMME; |
| a0d0e21e | 1278 | STRLEN len; |
| 748a9306 | 1279 | I32 minmatch = 0; |
| a3b680e6 | 1280 | const I32 oldsave = PL_savestack_ix; |
| f86702cc | 1281 | I32 update_minmatch = 1; |
| e60df1fa | 1282 | I32 had_zerolen = 0; |
| 58e23c8d | 1283 | U32 gpos = 0; |
| a0d0e21e | 1284 | |
| 533c011a | 1285 | if (PL_op->op_flags & OPf_STACKED) |
| a0d0e21e | 1286 | TARG = POPs; |
| 59f00321 RGS |
1287 | else if (PL_op->op_private & OPpTARGET_MY) |
| 1288 | GETTARGET; | |
| a0d0e21e | 1289 | else { |
| 54b9620d | 1290 | TARG = DEFSV; |
| a0d0e21e LW |
1291 | EXTEND(SP,1); |
| 1292 | } | |
| d9f424b2 | 1293 | |
| c277df42 | 1294 | PUTBACK; /* EVAL blocks need stack_sp. */ |
| 69dc4b30 FC |
1295 | /* Skip get-magic if this is a qr// clone, because regcomp has |
| 1296 | already done it. */ | |
| 1297 | s = ((struct regexp *)SvANY(rx))->mother_re | |
| 1298 | ? SvPV_nomg_const(TARG, len) | |
| 1299 | : SvPV_const(TARG, len); | |
| a0d0e21e | 1300 | if (!s) |
| 2269b42e | 1301 | DIE(aTHX_ "panic: pp_match"); |
| 890ce7af | 1302 | strend = s + len; |
| 07bc277f | 1303 | rxtainted = ((RX_EXTFLAGS(rx) & RXf_TAINTED) || |
| 3280af22 | 1304 | (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); |
| 9212bbba | 1305 | TAINT_NOT; |
| a0d0e21e | 1306 | |
| a30b2f1f | 1307 | RX_MATCH_UTF8_set(rx, DO_UTF8(TARG)); |
| d9f424b2 | 1308 | |
| d65afb4b | 1309 | /* PMdf_USED is set after a ?? matches once */ |
| c737faaf YO |
1310 | if ( |
| 1311 | #ifdef USE_ITHREADS | |
| 1312 | SvREADONLY(PL_regex_pad[pm->op_pmoffset]) | |
| 1313 | #else | |
| 1314 | pm->op_pmflags & PMf_USED | |
| 1315 | #endif | |
| 1316 | ) { | |
| c277df42 | 1317 | failure: |
| a0d0e21e LW |
1318 | if (gimme == G_ARRAY) |
| 1319 | RETURN; | |
| 1320 | RETPUSHNO; | |
| 1321 | } | |
| 1322 | ||
| c737faaf YO |
1323 | |
| 1324 | ||
| d65afb4b | 1325 | /* empty pattern special-cased to use last successful pattern if possible */ |
| 220fc49f | 1326 | if (!RX_PRELEN(rx) && PL_curpm) { |
| 3280af22 | 1327 | pm = PL_curpm; |
| aaa362c4 | 1328 | rx = PM_GETRE(pm); |
| a0d0e21e | 1329 | } |
| d65afb4b | 1330 | |
| 07bc277f | 1331 | if (RX_MINLEN(rx) > (I32)len) |
| d65afb4b | 1332 | goto failure; |
| c277df42 | 1333 | |
| a0d0e21e | 1334 | truebase = t = s; |
| ad94a511 IZ |
1335 | |
| 1336 | /* XXXX What part of this is needed with true \G-support? */ | |
| d65afb4b | 1337 | if ((global = dynpm->op_pmflags & PMf_GLOBAL)) { |
| 07bc277f | 1338 | RX_OFFS(rx)[0].start = -1; |
| a0d0e21e | 1339 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
| c445ea15 | 1340 | MAGIC* const mg = mg_find(TARG, PERL_MAGIC_regex_global); |
| 565764a8 | 1341 | if (mg && mg->mg_len >= 0) { |
| 07bc277f NC |
1342 | if (!(RX_EXTFLAGS(rx) & RXf_GPOS_SEEN)) |
| 1343 | RX_OFFS(rx)[0].end = RX_OFFS(rx)[0].start = mg->mg_len; | |
| 1344 | else if (RX_EXTFLAGS(rx) & RXf_ANCH_GPOS) { | |
| 0ef3e39e | 1345 | r_flags |= REXEC_IGNOREPOS; |
| 07bc277f NC |
1346 | RX_OFFS(rx)[0].end = RX_OFFS(rx)[0].start = mg->mg_len; |
| 1347 | } else if (RX_EXTFLAGS(rx) & RXf_GPOS_FLOAT) | |
| 58e23c8d YO |
1348 | gpos = mg->mg_len; |
| 1349 | else | |
| 07bc277f NC |
1350 | RX_OFFS(rx)[0].end = RX_OFFS(rx)[0].start = mg->mg_len; |
| 1351 | minmatch = (mg->mg_flags & MGf_MINMATCH) ? RX_GOFS(rx) + 1 : 0; | |
| f86702cc | 1352 | update_minmatch = 0; |
| 748a9306 | 1353 | } |
| a0d0e21e LW |
1354 | } |
| 1355 | } | |
| a229a030 | 1356 | /* XXX: comment out !global get safe $1 vars after a |
| 62e7980d | 1357 | match, BUT be aware that this leads to dramatic slowdowns on |
| a229a030 YO |
1358 | /g matches against large strings. So far a solution to this problem |
| 1359 | appears to be quite tricky. | |
| 1360 | Test for the unsafe vars are TODO for now. */ | |
| 0d8a731b DM |
1361 | if ( (!global && RX_NPARENS(rx)) |
| 1362 | || SvTEMP(TARG) || SvAMAGIC(TARG) || PL_sawampersand | |
| 1363 | || (RX_EXTFLAGS(rx) & (RXf_EVAL_SEEN|RXf_PMf_KEEPCOPY))) | |
| 14977893 | 1364 | r_flags |= REXEC_COPY_STR; |
| 1c846c1f | 1365 | if (SvSCREAM(TARG)) |
| 22e551b9 IZ |
1366 | r_flags |= REXEC_SCREAM; |
| 1367 | ||
| d7be1480 | 1368 | play_it_again: |
| 07bc277f NC |
1369 | if (global && RX_OFFS(rx)[0].start != -1) { |
| 1370 | t = s = RX_OFFS(rx)[0].end + truebase - RX_GOFS(rx); | |
| 1371 | if ((s + RX_MINLEN(rx)) > strend || s < truebase) | |
| a0d0e21e | 1372 | goto nope; |
| f86702cc | 1373 | if (update_minmatch++) |
| e60df1fa | 1374 | minmatch = had_zerolen; |
| a0d0e21e | 1375 | } |
| 07bc277f | 1376 | if (RX_EXTFLAGS(rx) & RXf_USE_INTUIT && |
| 3c8556c3 | 1377 | DO_UTF8(TARG) == (RX_UTF8(rx) != 0)) { |
| 5c144d81 NC |
1378 | /* FIXME - can PL_bostr be made const char *? */ |
| 1379 | PL_bostr = (char *)truebase; | |
| f9f4320a | 1380 | s = CALLREG_INTUIT_START(rx, TARG, (char *)s, (char *)strend, r_flags, NULL); |
| f722798b IZ |
1381 | |
| 1382 | if (!s) | |
| 1383 | goto nope; | |
| 07bc277f | 1384 | if ( (RX_EXTFLAGS(rx) & RXf_CHECK_ALL) |
| 14977893 | 1385 | && !PL_sawampersand |
| 07bc277f NC |
1386 | && !(RX_EXTFLAGS(rx) & RXf_PMf_KEEPCOPY) |
| 1387 | && ((RX_EXTFLAGS(rx) & RXf_NOSCAN) | |
| 1388 | || !((RX_EXTFLAGS(rx) & RXf_INTUIT_TAIL) | |
| 05b4157f GS |
1389 | && (r_flags & REXEC_SCREAM))) |
| 1390 | && !SvROK(TARG)) /* Cannot trust since INTUIT cannot guess ^ */ | |
| f722798b | 1391 | goto yup; |
| a0d0e21e | 1392 | } |
| 1f36f092 RB |
1393 | if (CALLREGEXEC(rx, (char*)s, (char *)strend, (char*)truebase, |
| 1394 | minmatch, TARG, NUM2PTR(void*, gpos), r_flags)) | |
| bbce6d69 | 1395 | { |
| 3280af22 | 1396 | PL_curpm = pm; |
| c737faaf YO |
1397 | if (dynpm->op_pmflags & PMf_ONCE) { |
| 1398 | #ifdef USE_ITHREADS | |
| 1399 | SvREADONLY_on(PL_regex_pad[dynpm->op_pmoffset]); | |
| 1400 | #else | |
| 1401 | dynpm->op_pmflags |= PMf_USED; | |
| 1402 | #endif | |
| 1403 | } | |
| a0d0e21e LW |
1404 | goto gotcha; |
| 1405 | } | |
| 1406 | else | |
| 1407 | goto ret_no; | |
| 1408 | /*NOTREACHED*/ | |
| 1409 | ||
| 1410 | gotcha: | |
| 72311751 GS |
1411 | if (rxtainted) |
| 1412 | RX_MATCH_TAINTED_on(rx); | |
| 1413 | TAINT_IF(RX_MATCH_TAINTED(rx)); | |
| a0d0e21e | 1414 | if (gimme == G_ARRAY) { |
| 07bc277f | 1415 | const I32 nparens = RX_NPARENS(rx); |
| a3b680e6 | 1416 | I32 i = (global && !nparens) ? 1 : 0; |
| a0d0e21e | 1417 | |
| c277df42 | 1418 | SPAGAIN; /* EVAL blocks could move the stack. */ |
| ffc61ed2 JH |
1419 | EXTEND(SP, nparens + i); |
| 1420 | EXTEND_MORTAL(nparens + i); | |
| 1421 | for (i = !i; i <= nparens; i++) { | |
| a0d0e21e | 1422 | PUSHs(sv_newmortal()); |
| 07bc277f NC |
1423 | if ((RX_OFFS(rx)[i].start != -1) && RX_OFFS(rx)[i].end != -1 ) { |
| 1424 | const I32 len = RX_OFFS(rx)[i].end - RX_OFFS(rx)[i].start; | |
| 1425 | s = RX_OFFS(rx)[i].start + truebase; | |
| 1426 | if (RX_OFFS(rx)[i].end < 0 || RX_OFFS(rx)[i].start < 0 || | |
| 290deeac A |
1427 | len < 0 || len > strend - s) |
| 1428 | DIE(aTHX_ "panic: pp_match start/end pointers"); | |
| a0d0e21e | 1429 | sv_setpvn(*SP, s, len); |
| cce850e4 | 1430 | if (DO_UTF8(TARG) && is_utf8_string((U8*)s, len)) |
| a197cbdd | 1431 | SvUTF8_on(*SP); |
| a0d0e21e LW |
1432 | } |
| 1433 | } | |
| 1434 | if (global) { | |
| d65afb4b | 1435 | if (dynpm->op_pmflags & PMf_CONTINUE) { |
| 6136c704 | 1436 | MAGIC* mg = NULL; |
| 0af80b60 HS |
1437 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) |
| 1438 | mg = mg_find(TARG, PERL_MAGIC_regex_global); | |
| 1439 | if (!mg) { | |
| d83f0a82 NC |
1440 | #ifdef PERL_OLD_COPY_ON_WRITE |
| 1441 | if (SvIsCOW(TARG)) | |
| 1442 | sv_force_normal_flags(TARG, 0); | |
| 1443 | #endif | |
| 1444 | mg = sv_magicext(TARG, NULL, PERL_MAGIC_regex_global, | |
| 1445 | &PL_vtbl_mglob, NULL, 0); | |
| 0af80b60 | 1446 | } |
| 07bc277f NC |
1447 | if (RX_OFFS(rx)[0].start != -1) { |
| 1448 | mg->mg_len = RX_OFFS(rx)[0].end; | |
| 1449 | if (RX_OFFS(rx)[0].start + RX_GOFS(rx) == (UV)RX_OFFS(rx)[0].end) | |
| 0af80b60 HS |
1450 | mg->mg_flags |= MGf_MINMATCH; |
| 1451 | else | |
| 1452 | mg->mg_flags &= ~MGf_MINMATCH; | |
| 1453 | } | |
| 1454 | } | |
| 07bc277f NC |
1455 | had_zerolen = (RX_OFFS(rx)[0].start != -1 |
| 1456 | && (RX_OFFS(rx)[0].start + RX_GOFS(rx) | |
| 1457 | == (UV)RX_OFFS(rx)[0].end)); | |
| c277df42 | 1458 | PUTBACK; /* EVAL blocks may use stack */ |
| cf93c79d | 1459 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
| a0d0e21e LW |
1460 | goto play_it_again; |
| 1461 | } | |
| ffc61ed2 | 1462 | else if (!nparens) |
| bde848c5 | 1463 | XPUSHs(&PL_sv_yes); |
| 4633a7c4 | 1464 | LEAVE_SCOPE(oldsave); |
| a0d0e21e LW |
1465 | RETURN; |
| 1466 | } | |
| 1467 | else { | |
| 1468 | if (global) { | |
| cbbf8932 | 1469 | MAGIC* mg; |
| a0d0e21e | 1470 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) |
| 14befaf4 | 1471 | mg = mg_find(TARG, PERL_MAGIC_regex_global); |
| cbbf8932 AL |
1472 | else |
| 1473 | mg = NULL; | |
| a0d0e21e | 1474 | if (!mg) { |
| d83f0a82 NC |
1475 | #ifdef PERL_OLD_COPY_ON_WRITE |
| 1476 | if (SvIsCOW(TARG)) | |
| 1477 | sv_force_normal_flags(TARG, 0); | |
| 1478 | #endif | |
| 1479 | mg = sv_magicext(TARG, NULL, PERL_MAGIC_regex_global, | |
| 1480 | &PL_vtbl_mglob, NULL, 0); | |
| a0d0e21e | 1481 | } |
| 07bc277f NC |
1482 | if (RX_OFFS(rx)[0].start != -1) { |
| 1483 | mg->mg_len = RX_OFFS(rx)[0].end; | |
| 1484 | if (RX_OFFS(rx)[0].start + RX_GOFS(rx) == (UV)RX_OFFS(rx)[0].end) | |
| 748a9306 LW |
1485 | mg->mg_flags |= MGf_MINMATCH; |
| 1486 | else | |
| 1487 | mg->mg_flags &= ~MGf_MINMATCH; | |
| 1488 | } | |
| a0d0e21e | 1489 | } |
| 4633a7c4 | 1490 | LEAVE_SCOPE(oldsave); |
| a0d0e21e LW |
1491 | RETPUSHYES; |
| 1492 | } | |
| 1493 | ||
| f722798b | 1494 | yup: /* Confirmed by INTUIT */ |
| 72311751 GS |
1495 | if (rxtainted) |
| 1496 | RX_MATCH_TAINTED_on(rx); | |
| 1497 | TAINT_IF(RX_MATCH_TAINTED(rx)); | |
| 3280af22 | 1498 | PL_curpm = pm; |
| c737faaf YO |
1499 | if (dynpm->op_pmflags & PMf_ONCE) { |
| 1500 | #ifdef USE_ITHREADS | |
| 1501 | SvREADONLY_on(PL_regex_pad[dynpm->op_pmoffset]); | |
| 1502 | #else | |
| 1503 | dynpm->op_pmflags |= PMf_USED; | |
| 1504 | #endif | |
| 1505 | } | |
| cf93c79d | 1506 | if (RX_MATCH_COPIED(rx)) |
| 07bc277f | 1507 | Safefree(RX_SUBBEG(rx)); |
| cf93c79d | 1508 | RX_MATCH_COPIED_off(rx); |
| 07bc277f | 1509 | RX_SUBBEG(rx) = NULL; |
| a0d0e21e | 1510 | if (global) { |
| 5c144d81 | 1511 | /* FIXME - should rx->subbeg be const char *? */ |
| 07bc277f NC |
1512 | RX_SUBBEG(rx) = (char *) truebase; |
| 1513 | RX_OFFS(rx)[0].start = s - truebase; | |
| a30b2f1f | 1514 | if (RX_MATCH_UTF8(rx)) { |
| 07bc277f NC |
1515 | char * const t = (char*)utf8_hop((U8*)s, RX_MINLENRET(rx)); |
| 1516 | RX_OFFS(rx)[0].end = t - truebase; | |
| 60aeb6fd NIS |
1517 | } |
| 1518 | else { | |
| 07bc277f | 1519 | RX_OFFS(rx)[0].end = s - truebase + RX_MINLENRET(rx); |
| 60aeb6fd | 1520 | } |
| 07bc277f | 1521 | RX_SUBLEN(rx) = strend - truebase; |
| a0d0e21e | 1522 | goto gotcha; |
| 1c846c1f | 1523 | } |
| 07bc277f | 1524 | if (PL_sawampersand || RX_EXTFLAGS(rx) & RXf_PMf_KEEPCOPY) { |
| 14977893 | 1525 | I32 off; |
| f8c7b90f | 1526 | #ifdef PERL_OLD_COPY_ON_WRITE |
| ed252734 NC |
1527 | if (SvIsCOW(TARG) || (SvFLAGS(TARG) & CAN_COW_MASK) == CAN_COW_FLAGS) { |
| 1528 | if (DEBUG_C_TEST) { | |
| 1529 | PerlIO_printf(Perl_debug_log, | |
| 1530 | "Copy on write: pp_match $& capture, type %d, truebase=%p, t=%p, difference %d\n", | |
| 6c9570dc | 1531 | (int) SvTYPE(TARG), (void*)truebase, (void*)t, |
| ed252734 NC |
1532 | (int)(t-truebase)); |
| 1533 | } | |
| bdd9a1b1 NC |
1534 | RX_SAVED_COPY(rx) = sv_setsv_cow(RX_SAVED_COPY(rx), TARG); |
| 1535 | RX_SUBBEG(rx) | |
| 1536 | = (char *) SvPVX_const(RX_SAVED_COPY(rx)) + (t - truebase); | |
| 1537 | assert (SvPOKp(RX_SAVED_COPY(rx))); | |
| ed252734 NC |
1538 | } else |
| 1539 | #endif | |
| 1540 | { | |
| 14977893 | 1541 | |
| 07bc277f | 1542 | RX_SUBBEG(rx) = savepvn(t, strend - t); |
| f8c7b90f | 1543 | #ifdef PERL_OLD_COPY_ON_WRITE |
| bdd9a1b1 | 1544 | RX_SAVED_COPY(rx) = NULL; |
| ed252734 NC |
1545 | #endif |
| 1546 | } | |
| 07bc277f | 1547 | RX_SUBLEN(rx) = strend - t; |
| 14977893 | 1548 | RX_MATCH_COPIED_on(rx); |
| 07bc277f NC |
1549 | off = RX_OFFS(rx)[0].start = s - t; |
| 1550 | RX_OFFS(rx)[0].end = off + RX_MINLENRET(rx); | |
| 14977893 JH |
1551 | } |
| 1552 | else { /* startp/endp are used by @- @+. */ | |
| 07bc277f NC |
1553 | RX_OFFS(rx)[0].start = s - truebase; |
| 1554 | RX_OFFS(rx)[0].end = s - truebase + RX_MINLENRET(rx); | |
| 14977893 | 1555 | } |
| 07bc277f | 1556 | /* including RX_NPARENS(rx) in the below code seems highly suspicious. |
| cde0cee5 | 1557 | -dmq */ |
| 07bc277f | 1558 | RX_NPARENS(rx) = RX_LASTPAREN(rx) = RX_LASTCLOSEPAREN(rx) = 0; /* used by @-, @+, and $^N */ |
| 4633a7c4 | 1559 | LEAVE_SCOPE(oldsave); |
| a0d0e21e LW |
1560 | RETPUSHYES; |
| 1561 | ||
| 1562 | nope: | |
| a0d0e21e | 1563 | ret_no: |
| d65afb4b | 1564 | if (global && !(dynpm->op_pmflags & PMf_CONTINUE)) { |
| a0d0e21e | 1565 | if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { |
| 6136c704 | 1566 | MAGIC* const mg = mg_find(TARG, PERL_MAGIC_regex_global); |
| a0d0e21e | 1567 | if (mg) |
| 565764a8 | 1568 | mg->mg_len = -1; |
| a0d0e21e LW |
1569 | } |
| 1570 | } | |
| 4633a7c4 | 1571 | LEAVE_SCOPE(oldsave); |
| a0d0e21e LW |
1572 | if (gimme == G_ARRAY) |
| 1573 | RETURN; | |
| 1574 | RETPUSHNO; | |
| 1575 | } | |
| 1576 | ||
| 1577 | OP * | |
| 864dbfa3 | 1578 | Perl_do_readline(pTHX) |
| a0d0e21e | 1579 | { |
| 27da23d5 | 1580 | dVAR; dSP; dTARGETSTACKED; |
| a0d0e21e LW |
1581 | register SV *sv; |
| 1582 | STRLEN tmplen = 0; | |
| 1583 | STRLEN offset; | |
| 760ac839 | 1584 | PerlIO *fp; |
| a3b680e6 AL |
1585 | register IO * const io = GvIO(PL_last_in_gv); |
| 1586 | register const I32 type = PL_op->op_type; | |
| 1587 | const I32 gimme = GIMME_V; | |
| a0d0e21e | 1588 | |
| 6136c704 | 1589 | if (io) { |
| 50db69d8 | 1590 | const MAGIC *const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar); |
| 6136c704 | 1591 | if (mg) { |
| 50db69d8 | 1592 | Perl_tied_method(aTHX_ "READLINE", SP, MUTABLE_SV(io), mg, gimme, 0); |
| 6136c704 | 1593 | if (gimme == G_SCALAR) { |
| 50db69d8 NC |
1594 | SPAGAIN; |
| 1595 | SvSetSV_nosteal(TARG, TOPs); | |
| 1596 | SETTARG; | |
| 6136c704 | 1597 | } |
| 50db69d8 | 1598 | return NORMAL; |
| 0b7c7b4f | 1599 | } |
| e79b0511 | 1600 | } |
| 4608196e | 1601 | fp = NULL; |
| a0d0e21e LW |
1602 | if (io) { |
| 1603 | fp = IoIFP(io); | |
| 1604 | if (!fp) { | |
| 1605 | if (IoFLAGS(io) & IOf_ARGV) { | |
| 1606 | if (IoFLAGS(io) & IOf_START) { | |
| a0d0e21e | 1607 | IoLINES(io) = 0; |
| 3280af22 | 1608 | if (av_len(GvAVn(PL_last_in_gv)) < 0) { |
| 1d7c1841 | 1609 | IoFLAGS(io) &= ~IOf_START; |
| 4608196e | 1610 | do_open(PL_last_in_gv,"-",1,FALSE,O_RDONLY,0,NULL); |
| 76f68e9b | 1611 | sv_setpvs(GvSVn(PL_last_in_gv), "-"); |
| 3280af22 | 1612 | SvSETMAGIC(GvSV(PL_last_in_gv)); |
| a2008d6d GS |
1613 | fp = IoIFP(io); |
| 1614 | goto have_fp; | |
| a0d0e21e LW |
1615 | } |
| 1616 | } | |
| 3280af22 | 1617 | fp = nextargv(PL_last_in_gv); |
| a0d0e21e | 1618 | if (!fp) { /* Note: fp != IoIFP(io) */ |
| 3280af22 | 1619 | (void)do_close(PL_last_in_gv, FALSE); /* now it does*/ |
| a0d0e21e LW |
1620 | } |
| 1621 | } | |
| 0d44d22b NC |
1622 | else if (type == OP_GLOB) |
| 1623 | fp = Perl_start_glob(aTHX_ POPs, io); | |
| a0d0e21e LW |
1624 | } |
| 1625 | else if (type == OP_GLOB) | |
| 1626 | SP--; | |
| 7716c5c5 | 1627 | else if (IoTYPE(io) == IoTYPE_WRONLY) { |
| a5390457 | 1628 | report_wrongway_fh(PL_last_in_gv, '>'); |
| a00b5bd3 | 1629 | } |
| a0d0e21e LW |
1630 | } |
| 1631 | if (!fp) { | |
| 041457d9 DM |
1632 | if ((!io || !(IoFLAGS(io) & IOf_START)) |
| 1633 | && ckWARN2(WARN_GLOB, WARN_CLOSED)) | |
| 1634 | { | |
| 3f4520fe | 1635 | if (type == OP_GLOB) |
| 9014280d | 1636 | Perl_warner(aTHX_ packWARN(WARN_GLOB), |
| af8c498a GS |
1637 | "glob failed (can't start child: %s)", |
| 1638 | Strerror(errno)); | |
| 69282e91 | 1639 | else |
| 831e4cc3 | 1640 | report_evil_fh(PL_last_in_gv); |
| 3f4520fe | 1641 | } |
| 54310121 | 1642 | if (gimme == G_SCALAR) { |
| 79628082 | 1643 | /* undef TARG, and push that undefined value */ |
| ba92458f AE |
1644 | if (type != OP_RCATLINE) { |
| 1645 | SV_CHECK_THINKFIRST_COW_DROP(TARG); | |
| 0c34ef67 | 1646 | SvOK_off(TARG); |
| ba92458f | 1647 | } |
| a0d0e21e LW |
1648 | PUSHTARG; |
| 1649 | } | |
| 1650 | RETURN; | |
| 1651 | } | |
| a2008d6d | 1652 | have_fp: |
| 54310121 | 1653 | if (gimme == G_SCALAR) { |
| a0d0e21e | 1654 | sv = TARG; |
| 0f722b55 RGS |
1655 | if (type == OP_RCATLINE && SvGMAGICAL(sv)) |
| 1656 | mg_get(sv); | |
| 48de12d9 RGS |
1657 | if (SvROK(sv)) { |
| 1658 | if (type == OP_RCATLINE) | |
| 1659 | SvPV_force_nolen(sv); | |
| 1660 | else | |
| 1661 | sv_unref(sv); | |
| 1662 | } | |
| f7877b28 NC |
1663 | else if (isGV_with_GP(sv)) { |
| 1664 | SvPV_force_nolen(sv); | |
| 1665 | } | |
| 862a34c6 | 1666 | SvUPGRADE(sv, SVt_PV); |
| a0d0e21e | 1667 | tmplen = SvLEN(sv); /* remember if already alloced */ |
| f72e8700 JJ |
1668 | if (!tmplen && !SvREADONLY(sv)) { |
| 1669 | /* try short-buffering it. Please update t/op/readline.t | |
| 1670 | * if you change the growth length. | |
| 1671 | */ | |
| 1672 | Sv_Grow(sv, 80); | |
| 1673 | } | |
| 2b5e58c4 AMS |
1674 | offset = 0; |
| 1675 | if (type == OP_RCATLINE && SvOK(sv)) { | |
| 1676 | if (!SvPOK(sv)) { | |
| 8b6b16e7 | 1677 | SvPV_force_nolen(sv); |
| 2b5e58c4 | 1678 | } |
| a0d0e21e | 1679 | offset = SvCUR(sv); |
| 2b5e58c4 | 1680 | } |
| a0d0e21e | 1681 | } |
| 54310121 | 1682 | else { |
| 561b68a9 | 1683 | sv = sv_2mortal(newSV(80)); |
| 54310121 | 1684 | offset = 0; |
| 1685 | } | |
| fbad3eb5 | 1686 | |
| 3887d568 AP |
1687 | /* This should not be marked tainted if the fp is marked clean */ |
| 1688 | #define MAYBE_TAINT_LINE(io, sv) \ | |
| 1689 | if (!(IoFLAGS(io) & IOf_UNTAINT)) { \ | |
| 1690 | TAINT; \ | |
| 1691 | SvTAINTED_on(sv); \ | |
| 1692 | } | |
| 1693 | ||
| 684bef36 | 1694 | /* delay EOF state for a snarfed empty file */ |
| fbad3eb5 | 1695 | #define SNARF_EOF(gimme,rs,io,sv) \ |
| 684bef36 | 1696 | (gimme != G_SCALAR || SvCUR(sv) \ |
| b9fee9ba | 1697 | || (IoFLAGS(io) & IOf_NOLINE) || !RsSNARF(rs)) |
| fbad3eb5 | 1698 | |
| a0d0e21e | 1699 | for (;;) { |
| 09e8efcc | 1700 | PUTBACK; |
| fbad3eb5 | 1701 | if (!sv_gets(sv, fp, offset) |
| 2d726892 TF |
1702 | && (type == OP_GLOB |
| 1703 | || SNARF_EOF(gimme, PL_rs, io, sv) | |
| 1704 | || PerlIO_error(fp))) | |
| fbad3eb5 | 1705 | { |
| 760ac839 | 1706 | PerlIO_clearerr(fp); |
| a0d0e21e | 1707 | if (IoFLAGS(io) & IOf_ARGV) { |
| 3280af22 | 1708 | fp = nextargv(PL_last_in_gv); |
| a0d0e21e LW |
1709 | if (fp) |
| 1710 | continue; | |
| 3280af22 | 1711 | (void)do_close(PL_last_in_gv, FALSE); |
| a0d0e21e LW |
1712 | } |
| 1713 | else if (type == OP_GLOB) { | |
| a2a5de95 NC |
1714 | if (!do_close(PL_last_in_gv, FALSE)) { |
| 1715 | Perl_ck_warner(aTHX_ packWARN(WARN_GLOB), | |
| 1716 | "glob failed (child exited with status %d%s)", | |
| 1717 | (int)(STATUS_CURRENT >> 8), | |
| 1718 | (STATUS_CURRENT & 0x80) ? ", core dumped" : ""); | |
| 4eb79ab5 | 1719 | } |
| a0d0e21e | 1720 | } |
| 54310121 | 1721 | if (gimme == G_SCALAR) { |
| ba92458f AE |
1722 | if (type != OP_RCATLINE) { |
| 1723 | SV_CHECK_THINKFIRST_COW_DROP(TARG); | |
| 0c34ef67 | 1724 | SvOK_off(TARG); |
| ba92458f | 1725 | } |
| 09e8efcc | 1726 | SPAGAIN; |
| a0d0e21e LW |
1727 | PUSHTARG; |
| 1728 | } | |
| 3887d568 | 1729 | MAYBE_TAINT_LINE(io, sv); |
| a0d0e21e LW |
1730 | RETURN; |
| 1731 | } | |
| 3887d568 | 1732 | MAYBE_TAINT_LINE(io, sv); |
| a0d0e21e | 1733 | IoLINES(io)++; |
| b9fee9ba | 1734 | IoFLAGS(io) |= IOf_NOLINE; |
| 71be2cbc | 1735 | SvSETMAGIC(sv); |
| 09e8efcc | 1736 | SPAGAIN; |
| a0d0e21e | 1737 | XPUSHs(sv); |
| a0d0e21e | 1738 | if (type == OP_GLOB) { |
| 349d4f2f | 1739 | const char *t1; |
| a0d0e21e | 1740 | |
| 3280af22 | 1741 | if (SvCUR(sv) > 0 && SvCUR(PL_rs) > 0) { |
| 6136c704 | 1742 | char * const tmps = SvEND(sv) - 1; |
| aa07b2f6 | 1743 | if (*tmps == *SvPVX_const(PL_rs)) { |
| c07a80fd | 1744 | *tmps = '\0'; |
| b162af07 | 1745 | SvCUR_set(sv, SvCUR(sv) - 1); |
| c07a80fd | 1746 | } |
| 1747 | } | |
| 349d4f2f NC |
1748 | for (t1 = SvPVX_const(sv); *t1; t1++) |
| 1749 | if (!isALPHA(*t1) && !isDIGIT(*t1) && | |
| 1750 | strchr("$&*(){}[]'\";\\|?<>~`", *t1)) | |
| a0d0e21e | 1751 | break; |
| 349d4f2f | 1752 | if (*t1 && PerlLIO_lstat(SvPVX_const(sv), &PL_statbuf) < 0) { |
| a0d0e21e LW |
1753 | (void)POPs; /* Unmatched wildcard? Chuck it... */ |
| 1754 | continue; | |
| 1755 | } | |
| 2d79bf7f | 1756 | } else if (SvUTF8(sv)) { /* OP_READLINE, OP_RCATLINE */ |
| d4c19fe8 AL |
1757 | if (ckWARN(WARN_UTF8)) { |
| 1758 | const U8 * const s = (const U8*)SvPVX_const(sv) + offset; | |
| 1759 | const STRLEN len = SvCUR(sv) - offset; | |
| 1760 | const U8 *f; | |
| 1761 | ||
| 1762 | if (!is_utf8_string_loc(s, len, &f)) | |
| 1763 | /* Emulate :encoding(utf8) warning in the same case. */ | |
| 1764 | Perl_warner(aTHX_ packWARN(WARN_UTF8), | |
| 1765 | "utf8 \"\\x%02X\" does not map to Unicode", | |
| 1766 | f < (U8*)SvEND(sv) ? *f : 0); | |
| 1767 | } | |
| a0d0e21e | 1768 | } |
| 54310121 | 1769 | if (gimme == G_ARRAY) { |
| a0d0e21e | 1770 | if (SvLEN(sv) - SvCUR(sv) > 20) { |
| 1da4ca5f | 1771 | SvPV_shrink_to_cur(sv); |
| a0d0e21e | 1772 | } |
| 561b68a9 | 1773 | sv = sv_2mortal(newSV(80)); |
| a0d0e21e LW |
1774 | continue; |
| 1775 | } | |
| 54310121 | 1776 | else if (gimme == G_SCALAR && !tmplen && SvLEN(sv) - SvCUR(sv) > 80) { |
| a0d0e21e | 1777 | /* try to reclaim a bit of scalar space (only on 1st alloc) */ |
| d5b5861b NC |
1778 | const STRLEN new_len |
| 1779 | = SvCUR(sv) < 60 ? 80 : SvCUR(sv)+40; /* allow some slop */ | |
| 1da4ca5f | 1780 | SvPV_renew(sv, new_len); |
| a0d0e21e LW |
1781 | } |
| 1782 | RETURN; | |
| 1783 | } | |
| 1784 | } | |
| 1785 | ||
| 1786 | PP(pp_enter) | |
| 1787 | { | |
| 27da23d5 | 1788 | dVAR; dSP; |
| c09156bb | 1789 | register PERL_CONTEXT *cx; |
| 533c011a | 1790 | I32 gimme = OP_GIMME(PL_op, -1); |
| a0d0e21e | 1791 | |
| 54310121 | 1792 | if (gimme == -1) { |
| e91684bf VP |
1793 | if (cxstack_ix >= 0) { |
| 1794 | /* If this flag is set, we're just inside a return, so we should | |
| 1795 | * store the caller's context */ | |
| 1796 | gimme = (PL_op->op_flags & OPf_SPECIAL) | |
| 1797 | ? block_gimme() | |
| 1798 | : cxstack[cxstack_ix].blk_gimme; | |
| 1799 | } else | |
| 54310121 | 1800 | gimme = G_SCALAR; |
| 1801 | } | |
| a0d0e21e | 1802 | |
| d343c3ef | 1803 | ENTER_with_name("block"); |
| a0d0e21e LW |
1804 | |
| 1805 | SAVETMPS; | |
| 924508f0 | 1806 | PUSHBLOCK(cx, CXt_BLOCK, SP); |
| a0d0e21e LW |
1807 | |
| 1808 | RETURN; | |
| 1809 | } | |
| 1810 | ||
| 1811 | PP(pp_helem) | |
| 1812 | { | |
| 97aff369 | 1813 | dVAR; dSP; |
| 760ac839 | 1814 | HE* he; |
| ae77835f | 1815 | SV **svp; |
| c445ea15 | 1816 | SV * const keysv = POPs; |
| 85fbaab2 | 1817 | HV * const hv = MUTABLE_HV(POPs); |
| a3b680e6 AL |
1818 | const U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
| 1819 | const U32 defer = PL_op->op_private & OPpLVAL_DEFER; | |
| be6c24e0 | 1820 | SV *sv; |
| c158a4fd | 1821 | const U32 hash = (SvIsCOW_shared_hash(keysv)) ? SvSHARED_HASH(keysv) : 0; |
| 92970b93 | 1822 | const bool localizing = PL_op->op_private & OPpLVAL_INTRO; |
| d30e492c | 1823 | bool preeminent = TRUE; |
| a0d0e21e | 1824 | |
| d4c19fe8 | 1825 | if (SvTYPE(hv) != SVt_PVHV) |
| a0d0e21e | 1826 | RETPUSHUNDEF; |
| d4c19fe8 | 1827 | |
| 92970b93 | 1828 | if (localizing) { |
| d4c19fe8 AL |
1829 | MAGIC *mg; |
| 1830 | HV *stash; | |
| d30e492c VP |
1831 | |
| 1832 | /* If we can determine whether the element exist, | |
| 1833 | * Try to preserve the existenceness of a tied hash | |
| 1834 | * element by using EXISTS and DELETE if possible. | |
| 1835 | * Fallback to FETCH and STORE otherwise. */ | |
| 1836 | if (SvCANEXISTDELETE(hv) || mg_find((const SV *)hv, PERL_MAGIC_env)) | |
| 1837 | preeminent = hv_exists_ent(hv, keysv, 0); | |
| d4c19fe8 | 1838 | } |
| d30e492c | 1839 | |
| d4c19fe8 AL |
1840 | he = hv_fetch_ent(hv, keysv, lval && !defer, hash); |
| 1841 | svp = he ? &HeVAL(he) : NULL; | |
| a0d0e21e | 1842 | if (lval) { |
| 3280af22 | 1843 | if (!svp || *svp == &PL_sv_undef) { |
| 68dc0745 | 1844 | SV* lv; |
| 1845 | SV* key2; | |
| 2d8e6c8d | 1846 | if (!defer) { |
| be2597df | 1847 | DIE(aTHX_ PL_no_helem_sv, SVfARG(keysv)); |
| 2d8e6c8d | 1848 | } |
| 68dc0745 | 1849 | lv = sv_newmortal(); |
| 1850 | sv_upgrade(lv, SVt_PVLV); | |
| 1851 | LvTYPE(lv) = 'y'; | |
| 6136c704 | 1852 | sv_magic(lv, key2 = newSVsv(keysv), PERL_MAGIC_defelem, NULL, 0); |
| 68dc0745 | 1853 | SvREFCNT_dec(key2); /* sv_magic() increments refcount */ |
| b37c2d43 | 1854 | LvTARG(lv) = SvREFCNT_inc_simple(hv); |
| 68dc0745 | 1855 | LvTARGLEN(lv) = 1; |
| 1856 | PUSHs(lv); | |
| 1857 | RETURN; | |
| 1858 | } | |
| 92970b93 | 1859 | if (localizing) { |
| bfcb3514 | 1860 | if (HvNAME_get(hv) && isGV(*svp)) |
| 159b6efe | 1861 | save_gp(MUTABLE_GV(*svp), !(PL_op->op_flags & OPf_SPECIAL)); |
| 47cfc530 VP |
1862 | else if (preeminent) |
| 1863 | save_helem_flags(hv, keysv, svp, | |
| 1864 | (PL_op->op_flags & OPf_SPECIAL) ? 0 : SAVEf_SETMAGIC); | |
| 1865 | else | |
| 1866 | SAVEHDELETE(hv, keysv); | |
| 5f05dabc | 1867 | } |
| 533c011a NIS |
1868 | else if (PL_op->op_private & OPpDEREF) |
| 1869 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); | |
| a0d0e21e | 1870 | } |
| 3280af22 | 1871 | sv = (svp ? *svp : &PL_sv_undef); |
| fd69380d DM |
1872 | /* Originally this did a conditional C<sv = sv_mortalcopy(sv)>; this |
| 1873 | * was to make C<local $tied{foo} = $tied{foo}> possible. | |
| 1874 | * However, it seems no longer to be needed for that purpose, and | |
| 1875 | * introduced a new bug: stuff like C<while ($hash{taintedval} =~ /.../g> | |
| 1876 | * would loop endlessly since the pos magic is getting set on the | |
| 1877 | * mortal copy and lost. However, the copy has the effect of | |
| 1878 | * triggering the get magic, and losing it altogether made things like | |
| 1879 | * c<$tied{foo};> in void context no longer do get magic, which some | |
| 1880 | * code relied on. Also, delayed triggering of magic on @+ and friends | |
| 1881 | * meant the original regex may be out of scope by now. So as a | |
| 1882 | * compromise, do the get magic here. (The MGf_GSKIP flag will stop it | |
| 1883 | * being called too many times). */ | |
| 39cf747a | 1884 | if (!lval && SvRMAGICAL(hv) && SvGMAGICAL(sv)) |
| fd69380d | 1885 | mg_get(sv); |
| be6c24e0 | 1886 | PUSHs(sv); |
| a0d0e21e LW |
1887 | RETURN; |
| 1888 | } | |
| 1889 | ||
| 1890 | PP(pp_leave) | |
| 1891 | { | |
| 27da23d5 | 1892 | dVAR; dSP; |
| c09156bb | 1893 | register PERL_CONTEXT *cx; |
| a0d0e21e LW |
1894 | SV **newsp; |
| 1895 | PMOP *newpm; | |
| 1896 | I32 gimme; | |
| 1897 | ||
| 533c011a | 1898 | if (PL_op->op_flags & OPf_SPECIAL) { |
| a0d0e21e | 1899 | cx = &cxstack[cxstack_ix]; |
| 3280af22 | 1900 | cx->blk_oldpm = PL_curpm; /* fake block should preserve $1 et al */ |
| a0d0e21e LW |
1901 | } |
| 1902 | ||
| 1903 | POPBLOCK(cx,newpm); | |
| 1904 | ||
| e91684bf | 1905 | gimme = OP_GIMME(PL_op, (cxstack_ix >= 0) ? gimme : G_SCALAR); |
| a0d0e21e | 1906 | |
| a1f49e72 | 1907 | TAINT_NOT; |
| 54310121 | 1908 | if (gimme == G_VOID) |
| 1909 | SP = newsp; | |
| 1910 | else if (gimme == G_SCALAR) { | |
| a3b680e6 | 1911 | register SV **mark; |
| 54310121 | 1912 | MARK = newsp + 1; |
| 09256e2f | 1913 | if (MARK <= SP) { |
| 54310121 | 1914 | if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP)) |
| 1915 | *MARK = TOPs; | |
| 1916 | else | |
| 1917 | *MARK = sv_mortalcopy(TOPs); | |
| 09256e2f | 1918 | } else { |
| 54310121 | 1919 | MEXTEND(mark,0); |
| 3280af22 | 1920 | *MARK = &PL_sv_undef; |
| a0d0e21e | 1921 | } |
| 54310121 | 1922 | SP = MARK; |
| a0d0e21e | 1923 | } |
| 54310121 | 1924 | else if (gimme == G_ARRAY) { |
| a1f49e72 | 1925 | /* in case LEAVE wipes old return values */ |
| a3b680e6 | 1926 | register SV **mark; |
| a1f49e72 CS |
1927 | for (mark = newsp + 1; mark <= SP; mark++) { |
| 1928 | if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP))) { | |
| a0d0e21e | 1929 | *mark = sv_mortalcopy(*mark); |
| a1f49e72 CS |
1930 | TAINT_NOT; /* Each item is independent */ |
| 1931 | } | |
| 1932 | } | |
| a0d0e21e | 1933 | } |
| 3280af22 | 1934 | PL_curpm = newpm; /* Don't pop $1 et al till now */ |
| a0d0e21e | 1935 | |
| d343c3ef | 1936 | LEAVE_with_name("block"); |
| a0d0e21e LW |
1937 | |
| 1938 | RETURN; | |
| 1939 | } | |
| 1940 | ||
| 1941 | PP(pp_iter) | |
| 1942 | { | |
| 97aff369 | 1943 | dVAR; dSP; |
| c09156bb | 1944 | register PERL_CONTEXT *cx; |
| dc09a129 | 1945 | SV *sv, *oldsv; |
| 1d7c1841 | 1946 | SV **itersvp; |
| d01136d6 BS |
1947 | AV *av = NULL; /* used for LOOP_FOR on arrays and the stack */ |
| 1948 | bool av_is_stack = FALSE; | |
| a0d0e21e | 1949 | |
| 924508f0 | 1950 | EXTEND(SP, 1); |
| a0d0e21e | 1951 | cx = &cxstack[cxstack_ix]; |
| 3b719c58 | 1952 | if (!CxTYPE_is_LOOP(cx)) |
| cea2e8a9 | 1953 | DIE(aTHX_ "panic: pp_iter"); |
| a0d0e21e | 1954 | |
| 1d7c1841 | 1955 | itersvp = CxITERVAR(cx); |
| d01136d6 | 1956 | if (CxTYPE(cx) == CXt_LOOP_LAZYSV) { |
| 89ea2908 | 1957 | /* string increment */ |
| d01136d6 BS |
1958 | SV* cur = cx->blk_loop.state_u.lazysv.cur; |
| 1959 | SV *end = cx->blk_loop.state_u.lazysv.end; | |
| 267cc4a8 NC |
1960 | /* If the maximum is !SvOK(), pp_enteriter substitutes PL_sv_no. |
| 1961 | It has SvPVX of "" and SvCUR of 0, which is what we want. */ | |
| 4fe3f0fa | 1962 | STRLEN maxlen = 0; |
| d01136d6 | 1963 | const char *max = SvPV_const(end, maxlen); |
| 89ea2908 | 1964 | if (!SvNIOK(cur) && SvCUR(cur) <= maxlen) { |
| 1d7c1841 | 1965 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
| eaa5c2d6 | 1966 | /* safe to reuse old SV */ |
| 1d7c1841 | 1967 | sv_setsv(*itersvp, cur); |
| eaa5c2d6 | 1968 | } |
| 1c846c1f | 1969 | else |
| eaa5c2d6 GA |
1970 | { |
| 1971 | /* we need a fresh SV every time so that loop body sees a | |
| 1972 | * completely new SV for closures/references to work as | |
| 1973 | * they used to */ | |
| dc09a129 | 1974 | oldsv = *itersvp; |
| 1d7c1841 | 1975 | *itersvp = newSVsv(cur); |
| dc09a129 | 1976 | SvREFCNT_dec(oldsv); |
| eaa5c2d6 | 1977 | } |
| aa07b2f6 | 1978 | if (strEQ(SvPVX_const(cur), max)) |
| 89ea2908 GA |
1979 | sv_setiv(cur, 0); /* terminate next time */ |
| 1980 | else | |
| 1981 | sv_inc(cur); | |
| 1982 | RETPUSHYES; | |
| 1983 | } | |
| 1984 | RETPUSHNO; | |
| d01136d6 BS |
1985 | } |
| 1986 | else if (CxTYPE(cx) == CXt_LOOP_LAZYIV) { | |
| 89ea2908 | 1987 | /* integer increment */ |
| d01136d6 | 1988 | if (cx->blk_loop.state_u.lazyiv.cur > cx->blk_loop.state_u.lazyiv.end) |
| 89ea2908 | 1989 | RETPUSHNO; |
| 7f61b687 | 1990 | |
| 3db8f154 | 1991 | /* don't risk potential race */ |
| 1d7c1841 | 1992 | if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { |
| eaa5c2d6 | 1993 | /* safe to reuse old SV */ |
| d01136d6 | 1994 | sv_setiv(*itersvp, cx->blk_loop.state_u.lazyiv.cur++); |
| eaa5c2d6 | 1995 | } |
| 1c846c1f | 1996 | else |
| eaa5c2d6 GA |
1997 | { |
| 1998 | /* we need a fresh SV every time so that loop body sees a | |
| 1999 | * completely new SV for closures/references to work as they | |
| 2000 | * used to */ | |
| dc09a129 | 2001 | oldsv = *itersvp; |
| d01136d6 | 2002 | *itersvp = newSViv(cx->blk_loop.state_u.lazyiv.cur++); |
| dc09a129 | 2003 | SvREFCNT_dec(oldsv); |
| eaa5c2d6 | 2004 | } |
| a2309040 JH |
2005 | |
| 2006 | /* Handle end of range at IV_MAX */ | |
| d01136d6 BS |
2007 | if ((cx->blk_loop.state_u.lazyiv.cur == IV_MIN) && |
| 2008 | (cx->blk_loop.state_u.lazyiv.end == IV_MAX)) | |
| a2309040 | 2009 | { |
| d01136d6 BS |
2010 | cx->blk_loop.state_u.lazyiv.cur++; |
| 2011 | cx->blk_loop.state_u.lazyiv.end++; | |
| a2309040 JH |
2012 | } |
| 2013 | ||
| 89ea2908 GA |
2014 | RETPUSHYES; |
| 2015 | } | |
| 2016 | ||
| 2017 | /* iterate array */ | |
| d01136d6 BS |
2018 | assert(CxTYPE(cx) == CXt_LOOP_FOR); |
| 2019 | av = cx->blk_loop.state_u.ary.ary; | |
| 2020 | if (!av) { | |
| 2021 | av_is_stack = TRUE; | |
| 2022 | av = PL_curstack; | |
| 2023 | } | |
| ef3e5ea9 | 2024 | if (PL_op->op_private & OPpITER_REVERSED) { |
| d01136d6 BS |
2025 | if (cx->blk_loop.state_u.ary.ix <= (av_is_stack |
| 2026 | ? cx->blk_loop.resetsp + 1 : 0)) | |
| ef3e5ea9 | 2027 | RETPUSHNO; |
| a0d0e21e | 2028 | |
| ef3e5ea9 | 2029 | if (SvMAGICAL(av) || AvREIFY(av)) { |
| d01136d6 | 2030 | SV * const * const svp = av_fetch(av, --cx->blk_loop.state_u.ary.ix, FALSE); |
| a0714e2c | 2031 | sv = svp ? *svp : NULL; |
| ef3e5ea9 NC |
2032 | } |
| 2033 | else { | |
| d01136d6 | 2034 | sv = AvARRAY(av)[--cx->blk_loop.state_u.ary.ix]; |
| ef3e5ea9 | 2035 | } |
| d42935ef JH |
2036 | } |
| 2037 | else { | |
| d01136d6 | 2038 | if (cx->blk_loop.state_u.ary.ix >= (av_is_stack ? cx->blk_oldsp : |
| ef3e5ea9 NC |
2039 | AvFILL(av))) |
| 2040 | RETPUSHNO; | |
| 2041 | ||
| 2042 | if (SvMAGICAL(av) || AvREIFY(av)) { | |
| d01136d6 | 2043 | SV * const * const svp = av_fetch(av, ++cx->blk_loop.state_u.ary.ix, FALSE); |
| a0714e2c | 2044 | sv = svp ? *svp : NULL; |
| ef3e5ea9 NC |
2045 | } |
| 2046 | else { | |
| d01136d6 | 2047 | sv = AvARRAY(av)[++cx->blk_loop.state_u.ary.ix]; |
| ef3e5ea9 | 2048 | } |
| d42935ef | 2049 | } |
| ef3e5ea9 | 2050 | |
| 0565a181 | 2051 | if (sv && SvIS_FREED(sv)) { |
| a0714e2c | 2052 | *itersvp = NULL; |
| b6c83531 | 2053 | Perl_croak(aTHX_ "Use of freed value in iteration"); |
| cccede53 DM |
2054 | } |
| 2055 | ||
| d01136d6 | 2056 | if (sv) { |
| a0d0e21e | 2057 | SvTEMP_off(sv); |
| d01136d6 BS |
2058 | SvREFCNT_inc_simple_void_NN(sv); |
| 2059 | } | |
| a0d0e21e | 2060 | else |
| 3280af22 | 2061 | sv = &PL_sv_undef; |
| d01136d6 BS |
2062 | if (!av_is_stack && sv == &PL_sv_undef) { |
| 2063 | SV *lv = newSV_type(SVt_PVLV); | |
| 2064 | LvTYPE(lv) = 'y'; | |
| 2065 | sv_magic(lv, NULL, PERL_MAGIC_defelem, NULL, 0); | |
| b37c2d43 | 2066 | LvTARG(lv) = SvREFCNT_inc_simple(av); |
| d01136d6 | 2067 | LvTARGOFF(lv) = cx->blk_loop.state_u.ary.ix; |
| 42718184 | 2068 | LvTARGLEN(lv) = (STRLEN)UV_MAX; |
| d01136d6 | 2069 | sv = lv; |
| 5f05dabc | 2070 | } |
| a0d0e21e | 2071 | |
| dc09a129 | 2072 | oldsv = *itersvp; |
| d01136d6 | 2073 | *itersvp = sv; |
| dc09a129 DM |
2074 | SvREFCNT_dec(oldsv); |
| 2075 | ||
| a0d0e21e LW |
2076 | RETPUSHYES; |
| 2077 | } | |
| 2078 | ||
| ef07e810 DM |
2079 | /* |
| 2080 | A description of how taint works in pattern matching and substitution. | |
| 2081 | ||
| 0ab462a6 DM |
2082 | While the pattern is being assembled/concatenated and them compiled, |
| 2083 | PL_tainted will get set if any component of the pattern is tainted, e.g. | |
| 2084 | /.*$tainted/. At the end of pattern compilation, the RXf_TAINTED flag | |
| 2085 | is set on the pattern if PL_tainted is set. | |
| ef07e810 | 2086 | |
| 0ab462a6 DM |
2087 | When the pattern is copied, e.g. $r = qr/..../, the SV holding the ref to |
| 2088 | the pattern is marked as tainted. This means that subsequent usage, such | |
| 2089 | as /x$r/, will set PL_tainted, and thus RXf_TAINTED, on the new pattern too. | |
| ef07e810 DM |
2090 | |
| 2091 | During execution of a pattern, locale-variant ops such as ALNUML set the | |
| 2092 | local flag RF_tainted. At the end of execution, the engine sets the | |
| 0ab462a6 DM |
2093 | RXf_TAINTED_SEEN on the pattern if RF_tainted got set, or clears it |
| 2094 | otherwise. | |
| ef07e810 DM |
2095 | |
| 2096 | In addition, RXf_TAINTED_SEEN is used post-execution by the get magic code | |
| 2097 | of $1 et al to indicate whether the returned value should be tainted. | |
| 2098 | It is the responsibility of the caller of the pattern (i.e. pp_match, | |
| 2099 | pp_subst etc) to set this flag for any other circumstances where $1 needs | |
| 2100 | to be tainted. | |
| 2101 | ||
| 2102 | The taint behaviour of pp_subst (and pp_substcont) is quite complex. | |
| 2103 | ||
| 2104 | There are three possible sources of taint | |
| 2105 | * the source string | |
| 2106 | * the pattern (both compile- and run-time, RXf_TAINTED / RXf_TAINTED_SEEN) | |
| 2107 | * the replacement string (or expression under /e) | |
| 2108 | ||
| 2109 | There are four destinations of taint and they are affected by the sources | |
| 2110 | according to the rules below: | |
| 2111 | ||
| 2112 | * the return value (not including /r): | |
| 2113 | tainted by the source string and pattern, but only for the | |
| 2114 | number-of-iterations case; boolean returns aren't tainted; | |
| 2115 | * the modified string (or modified copy under /r): | |
| 2116 | tainted by the source string, pattern, and replacement strings; | |
| 2117 | * $1 et al: | |
| 2118 | tainted by the pattern, and under 'use re "taint"', by the source | |
| 2119 | string too; | |
| 2120 | * PL_taint - i.e. whether subsequent code (e.g. in a /e block) is tainted: | |
| 2121 | should always be unset before executing subsequent code. | |
| 2122 | ||
| 2123 | The overall action of pp_subst is: | |
| 2124 | ||
| 2125 | * at the start, set bits in rxtainted indicating the taint status of | |
| 2126 | the various sources. | |
| 2127 | ||
| 2128 | * After each pattern execution, update the SUBST_TAINT_PAT bit in | |
| 2129 | rxtainted if RXf_TAINTED_SEEN has been set, to indicate that the | |
| 2130 | pattern has subsequently become tainted via locale ops. | |
| 2131 | ||
| 2132 | * If control is being passed to pp_substcont to execute a /e block, | |
| 2133 | save rxtainted in the CXt_SUBST block, for future use by | |
| 2134 | pp_substcont. | |
| 2135 | ||
| 2136 | * Whenever control is being returned to perl code (either by falling | |
| 2137 | off the "end" of pp_subst/pp_substcont, or by entering a /e block), | |
| 2138 | use the flag bits in rxtainted to make all the appropriate types of | |
| 0ab462a6 DM |
2139 | destination taint visible; e.g. set RXf_TAINTED_SEEN so that $1 |
| 2140 | et al will appear tainted. | |
| ef07e810 DM |
2141 | |
| 2142 | pp_match is just a simpler version of the above. | |
| 2143 | ||
| 2144 | */ | |
| 2145 | ||
| a0d0e21e LW |
2146 | PP(pp_subst) |
| 2147 | { | |
| 97aff369 | 2148 | dVAR; dSP; dTARG; |
| a0d0e21e LW |
2149 | register PMOP *pm = cPMOP; |
| 2150 | PMOP *rpm = pm; | |
| a0d0e21e LW |
2151 | register char *s; |
| 2152 | char *strend; | |
| 2153 | register char *m; | |
| 5c144d81 | 2154 | const char *c; |
| a0d0e21e LW |
2155 | register char *d; |
| 2156 | STRLEN clen; | |
| 2157 | I32 iters = 0; | |
| 2158 | I32 maxiters; | |
| 2159 | register I32 i; | |
| 2160 | bool once; | |
| ef07e810 DM |
2161 | U8 rxtainted = 0; /* holds various SUBST_TAINT_* flag bits. |
| 2162 | See "how taint works" above */ | |
| a0d0e21e | 2163 | char *orig; |
| 1ed74d04 | 2164 | U8 r_flags; |
| aaa362c4 | 2165 | register REGEXP *rx = PM_GETRE(pm); |
| a0d0e21e LW |
2166 | STRLEN len; |
| 2167 | int force_on_match = 0; | |
| 0bcc34c2 | 2168 | const I32 oldsave = PL_savestack_ix; |
| 792b2c16 | 2169 | STRLEN slen; |
| f272994b | 2170 | bool doutf8 = FALSE; |
| f8c7b90f | 2171 | #ifdef PERL_OLD_COPY_ON_WRITE |
| ed252734 NC |
2172 | bool is_cow; |
| 2173 | #endif | |
| a0714e2c | 2174 | SV *nsv = NULL; |
| b770e143 NC |
2175 | /* known replacement string? */ |
| 2176 | register SV *dstr = (pm->op_pmflags & PMf_CONST) ? POPs : NULL; | |
| a0d0e21e | 2177 | |
| f410a211 NC |
2178 | PERL_ASYNC_CHECK(); |
| 2179 | ||
| 533c011a | 2180 | if (PL_op->op_flags & OPf_STACKED) |
| a0d0e21e | 2181 | TARG = POPs; |
| 59f00321 RGS |
2182 | else if (PL_op->op_private & OPpTARGET_MY) |
| 2183 | GETTARGET; | |
| a0d0e21e | 2184 | else { |
| 54b9620d | 2185 | TARG = DEFSV; |
| a0d0e21e | 2186 | EXTEND(SP,1); |
| 1c846c1f | 2187 | } |
| d9f424b2 | 2188 | |
| 4f4d7508 DC |
2189 | /* In non-destructive replacement mode, duplicate target scalar so it |
| 2190 | * remains unchanged. */ | |
| 2191 | if (rpm->op_pmflags & PMf_NONDESTRUCT) | |
| 4eedab49 | 2192 | TARG = sv_2mortal(newSVsv(TARG)); |
| 4f4d7508 | 2193 | |
| f8c7b90f | 2194 | #ifdef PERL_OLD_COPY_ON_WRITE |
| ed252734 NC |
2195 | /* Awooga. Awooga. "bool" types that are actually char are dangerous, |
| 2196 | because they make integers such as 256 "false". */ | |
| 2197 | is_cow = SvIsCOW(TARG) ? TRUE : FALSE; | |
| 2198 | #else | |
| 765f542d NC |
2199 | if (SvIsCOW(TARG)) |
| 2200 | sv_force_normal_flags(TARG,0); | |
| ed252734 NC |
2201 | #endif |
| 2202 | if ( | |
| f8c7b90f | 2203 | #ifdef PERL_OLD_COPY_ON_WRITE |
| ed252734 NC |
2204 | !is_cow && |
| 2205 | #endif | |
| 2206 | (SvREADONLY(TARG) | |
| cecf5685 NC |
2207 | || ( ((SvTYPE(TARG) == SVt_PVGV && isGV_with_GP(TARG)) |
| 2208 | || SvTYPE(TARG) > SVt_PVLV) | |
| 4ce457a6 | 2209 | && !(SvTYPE(TARG) == SVt_PVGV && SvFAKE(TARG))))) |
| 6ad8f254 | 2210 | Perl_croak_no_modify(aTHX); |
| 8ec5e241 NIS |
2211 | PUTBACK; |
| 2212 | ||
| 3e462cdc | 2213 | setup_match: |
| d5263905 | 2214 | s = SvPV_mutable(TARG, len); |
| 68dc0745 | 2215 | if (!SvPOKp(TARG) || SvTYPE(TARG) == SVt_PVGV) |
| a0d0e21e | 2216 | force_on_match = 1; |
| 20be6587 DM |
2217 | |
| 2218 | /* only replace once? */ | |
| 2219 | once = !(rpm->op_pmflags & PMf_GLOBAL); | |
| 2220 | ||
| ef07e810 | 2221 | /* See "how taint works" above */ |
| 20be6587 DM |
2222 | if (PL_tainting) { |
| 2223 | rxtainted = ( | |
| 2224 | (SvTAINTED(TARG) ? SUBST_TAINT_STR : 0) | |
| 2225 | | ((RX_EXTFLAGS(rx) & RXf_TAINTED) ? SUBST_TAINT_PAT : 0) | |
| 2226 | | ((pm->op_pmflags & PMf_RETAINT) ? SUBST_TAINT_RETAINT : 0) | |
| 2227 | | ((once && !(rpm->op_pmflags & PMf_NONDESTRUCT)) | |
| 2228 | ? SUBST_TAINT_BOOLRET : 0)); | |
| 2229 | TAINT_NOT; | |
| 2230 | } | |
| a12c0f56 | 2231 | |
| a30b2f1f | 2232 | RX_MATCH_UTF8_set(rx, DO_UTF8(TARG)); |
| d9f424b2 | 2233 | |
| a0d0e21e LW |
2234 | force_it: |
| 2235 | if (!pm || !s) | |
| 2269b42e | 2236 | DIE(aTHX_ "panic: pp_subst"); |
| a0d0e21e LW |
2237 | |
| 2238 | strend = s + len; | |
| a30b2f1f | 2239 | slen = RX_MATCH_UTF8(rx) ? utf8_length((U8*)s, (U8*)strend) : len; |
| 792b2c16 JH |
2240 | maxiters = 2 * slen + 10; /* We can match twice at each |
| 2241 | position, once with zero-length, | |
| 2242 | second time with non-zero. */ | |
| a0d0e21e | 2243 | |
| 220fc49f | 2244 | if (!RX_PRELEN(rx) && PL_curpm) { |
| 3280af22 | 2245 | pm = PL_curpm; |
| aaa362c4 | 2246 | rx = PM_GETRE(pm); |
| a0d0e21e | 2247 | } |
| 07bc277f NC |
2248 | r_flags = (RX_NPARENS(rx) || SvTEMP(TARG) || PL_sawampersand |
| 2249 | || (RX_EXTFLAGS(rx) & (RXf_EVAL_SEEN|RXf_PMf_KEEPCOPY)) ) | |
| ed252734 | 2250 | ? REXEC_COPY_STR : 0; |
| f722798b | 2251 | if (SvSCREAM(TARG)) |
| 22e551b9 | 2252 | r_flags |= REXEC_SCREAM; |
| 7fba1cd6 | 2253 | |
| a0d0e21e | 2254 | orig = m = s; |
| 07bc277f | 2255 | if (RX_EXTFLAGS(rx) & RXf_USE_INTUIT) { |
| ee0b7718 | 2256 | PL_bostr = orig; |
| f9f4320a | 2257 | s = CALLREG_INTUIT_START(rx, TARG, s, strend, r_flags, NULL); |
| f722798b IZ |
2258 | |
| 2259 | if (!s) | |
| df34c13a | 2260 | goto ret_no; |
| f722798b | 2261 | /* How to do it in subst? */ |
| 07bc277f | 2262 | /* if ( (RX_EXTFLAGS(rx) & RXf_CHECK_ALL) |
| 1c846c1f | 2263 | && !PL_sawampersand |
| 07bc277f NC |
2264 | && !(RX_EXTFLAGS(rx) & RXf_KEEPCOPY) |
| 2265 | && ((RX_EXTFLAGS(rx) & RXf_NOSCAN) | |
| 2266 | || !((RX_EXTFLAGS(rx) & RXf_INTUIT_TAIL) | |
| f722798b IZ |
2267 | && (r_flags & REXEC_SCREAM)))) |
| 2268 | goto yup; | |
| 2269 | */ | |
| a0d0e21e | 2270 | } |
| 71be2cbc | 2271 | |
| 8b64c330 DM |
2272 | if (!CALLREGEXEC(rx, s, strend, orig, 0, TARG, NULL, |
| 2273 | r_flags | REXEC_CHECKED)) | |
| 2274 | { | |
| 5e79dfb9 DM |
2275 | ret_no: |
| 2276 | SPAGAIN; | |
| 2277 | PUSHs(rpm->op_pmflags & PMf_NONDESTRUCT ? TARG : &PL_sv_no); | |
| 2278 | LEAVE_SCOPE(oldsave); | |
| 2279 | RETURN; | |
| 2280 | } | |
| 2281 | ||
| 71be2cbc | 2282 | /* known replacement string? */ |
| f272994b | 2283 | if (dstr) { |
| 20be6587 DM |
2284 | if (SvTAINTED(dstr)) |
| 2285 | rxtainted |= SUBST_TAINT_REPL; | |
| 3e462cdc KW |
2286 | |
| 2287 | /* Upgrade the source if the replacement is utf8 but the source is not, | |
| 2288 | * but only if it matched; see | |
| 2289 | * http://www.nntp.perl.org/group/perl.perl5.porters/2010/04/msg158809.html | |
| 2290 | */ | |
| 5e79dfb9 | 2291 | if (DO_UTF8(dstr) && ! DO_UTF8(TARG)) { |
| c95ca9b8 DM |
2292 | char * const orig_pvx = SvPVX(TARG); |
| 2293 | const STRLEN new_len = sv_utf8_upgrade_nomg(TARG); | |
| 3e462cdc KW |
2294 | |
| 2295 | /* If the lengths are the same, the pattern contains only | |
| 2296 | * invariants, can keep going; otherwise, various internal markers | |
| 2297 | * could be off, so redo */ | |
| c95ca9b8 | 2298 | if (new_len != len || orig_pvx != SvPVX(TARG)) { |
| 3e462cdc KW |
2299 | goto setup_match; |
| 2300 | } | |
| 2301 | } | |
| 2302 | ||
| 8514a05a JH |
2303 | /* replacement needing upgrading? */ |
| 2304 | if (DO_UTF8(TARG) && !doutf8) { | |
| db79b45b | 2305 | nsv = sv_newmortal(); |
| 4a176938 | 2306 | SvSetSV(nsv, dstr); |
| 8514a05a JH |
2307 | if (PL_encoding) |
| 2308 | sv_recode_to_utf8(nsv, PL_encoding); | |
| 2309 | else | |
| 2310 | sv_utf8_upgrade(nsv); | |
| 5c144d81 | 2311 | c = SvPV_const(nsv, clen); |
| 4a176938 JH |
2312 | doutf8 = TRUE; |
| 2313 | } | |
| 2314 | else { | |
| 5c144d81 | 2315 | c = SvPV_const(dstr, clen); |
| 4a176938 | 2316 | doutf8 = DO_UTF8(dstr); |
| 8514a05a | 2317 | } |
| f272994b A |
2318 | } |
| 2319 | else { | |
| 6136c704 | 2320 | c = NULL; |
| f272994b A |
2321 | doutf8 = FALSE; |
| 2322 | } | |
| 2323 | ||
| 71be2cbc | 2324 | /* can do inplace substitution? */ |
| ed252734 | 2325 | if (c |
| f8c7b90f | 2326 | #ifdef PERL_OLD_COPY_ON_WRITE |
| ed252734 NC |
2327 | && !is_cow |
| 2328 | #endif | |
| 07bc277f NC |
2329 | && (I32)clen <= RX_MINLENRET(rx) && (once || !(r_flags & REXEC_COPY_STR)) |
| 2330 | && !(RX_EXTFLAGS(rx) & RXf_LOOKBEHIND_SEEN) | |
| 8b030b38 DM |
2331 | && (!doutf8 || SvUTF8(TARG))) |
| 2332 | { | |
| ec911639 | 2333 | |
| f8c7b90f | 2334 | #ifdef PERL_OLD_COPY_ON_WRITE |
| ed252734 NC |
2335 | if (SvIsCOW(TARG)) { |
| 2336 | assert (!force_on_match); | |
| 2337 | goto have_a_cow; | |
| 2338 | } | |
| 2339 | #endif | |
| 71be2cbc | 2340 | if (force_on_match) { |
| 2341 | force_on_match = 0; | |
| 2342 | s = SvPV_force(TARG, len); | |
| 2343 | goto force_it; | |
| 2344 | } | |
| 71be2cbc | 2345 | d = s; |
| 3280af22 | 2346 | PL_curpm = pm; |
| 71be2cbc | 2347 | SvSCREAM_off(TARG); /* disable possible screamer */ |
| 2348 | if (once) { | |
| 20be6587 DM |
2349 | if (RX_MATCH_TAINTED(rx)) /* run time pattern taint, eg locale */ |
| 2350 | rxtainted |= SUBST_TAINT_PAT; | |
| 07bc277f NC |
2351 | m = orig + RX_OFFS(rx)[0].start; |
| 2352 | d = orig + RX_OFFS(rx)[0].end; | |
| 71be2cbc | 2353 | s = orig; |
| 2354 | if (m - s > strend - d) { /* faster to shorten from end */ | |
| 2355 | if (clen) { | |
| 2356 | Copy(c, m, clen, char); | |
| 2357 | m += clen; | |
| a0d0e21e | 2358 | } |
| 71be2cbc | 2359 | i = strend - d; |
| 2360 | if (i > 0) { | |
| 2361 | Move(d, m, i, char); | |
| 2362 | m += i; | |
| a0d0e21e | 2363 | } |
| 71be2cbc | 2364 | *m = '\0'; |
| 2365 | SvCUR_set(TARG, m - s); | |
| 2366 | } | |
| 155aba94 | 2367 | else if ((i = m - s)) { /* faster from front */ |
| 71be2cbc | 2368 | d -= clen; |
| 2369 | m = d; | |
| 0d3c21b0 | 2370 | Move(s, d - i, i, char); |
| 71be2cbc | 2371 | sv_chop(TARG, d-i); |
| 71be2cbc | 2372 | if (clen) |
| 2373 | Copy(c, m, clen, char); | |
| 2374 | } | |
| 2375 | else if (clen) { | |
| 2376 | d -= clen; | |
| 2377 | sv_chop(TARG, d); | |
| 2378 | Copy(c, d, clen, char); | |
| 2379 | } | |
| 2380 | else { | |
| 2381 | sv_chop(TARG, d); | |
| 2382 | } | |
| 8ec5e241 | 2383 | SPAGAIN; |
| af050d75 | 2384 | PUSHs(rpm->op_pmflags & PMf_NONDESTRUCT ? TARG : &PL_sv_yes); |
| 71be2cbc | 2385 | } |
| 2386 | else { | |
| 71be2cbc | 2387 | do { |
| 2388 | if (iters++ > maxiters) | |
| cea2e8a9 | 2389 | DIE(aTHX_ "Substitution loop"); |
| 20be6587 DM |
2390 | if (RX_MATCH_TAINTED(rx)) /* run time pattern taint, eg locale */ |
| 2391 | rxtainted |= SUBST_TAINT_PAT; | |
| 07bc277f | 2392 | m = RX_OFFS(rx)[0].start + orig; |
| 155aba94 | 2393 | if ((i = m - s)) { |
| 71be2cbc | 2394 | if (s != d) |
| 2395 | Move(s, d, i, char); | |
| 2396 | d += i; | |
| a0d0e21e | 2397 | } |
| 71be2cbc | 2398 | if (clen) { |
| 2399 | Copy(c, d, clen, char); | |
| 2400 | d += clen; | |
| 2401 | } | |
| 07bc277f | 2402 | s = RX_OFFS(rx)[0].end + orig; |
| f9f4320a | 2403 | } while (CALLREGEXEC(rx, s, strend, orig, s == m, |
| f722798b IZ |
2404 | TARG, NULL, |
| 2405 | /* don't match same null twice */ | |
| 2406 | REXEC_NOT_FIRST|REXEC_IGNOREPOS)); | |
| 71be2cbc | 2407 | if (s != d) { |
| 2408 | i = strend - s; | |
| aa07b2f6 | 2409 | SvCUR_set(TARG, d - SvPVX_const(TARG) + i); |
| 71be2cbc | 2410 | Move(s, d, i+1, char); /* include the NUL */ |
| a0d0e21e | 2411 | } |
| 8ec5e241 | 2412 | SPAGAIN; |
| 4f4d7508 DC |
2413 | if (rpm->op_pmflags & PMf_NONDESTRUCT) |
| 2414 | PUSHs(TARG); | |
| 2415 | else | |
| 2416 | mPUSHi((I32)iters); | |
| a0d0e21e LW |
2417 | } |
| 2418 | } | |
| ff6e92e8 | 2419 | else { |
| a0d0e21e LW |
2420 | if (force_on_match) { |
| 2421 | force_on_match = 0; | |
| 2422 | s = SvPV_force(TARG, len); | |
| 2423 | goto force_it; | |
| 2424 | } | |
| f8c7b90f | 2425 | #ifdef PERL_OLD_COPY_ON_WRITE |
| ed252734 NC |
2426 | have_a_cow: |
| 2427 | #endif | |
| 20be6587 DM |
2428 | if (RX_MATCH_TAINTED(rx)) /* run time pattern taint, eg locale */ |
| 2429 | rxtainted |= SUBST_TAINT_PAT; | |
| 740cce10 | 2430 | dstr = newSVpvn_utf8(m, s-m, DO_UTF8(TARG)); |
| cff085c1 | 2431 | SAVEFREESV(dstr); |
| 3280af22 | 2432 | PL_curpm = pm; |
| a0d0e21e | 2433 | if (!c) { |
| c09156bb | 2434 | register PERL_CONTEXT *cx; |
| 8ec5e241 | 2435 | SPAGAIN; |
| 20be6587 DM |
2436 | /* note that a whole bunch of local vars are saved here for |
| 2437 | * use by pp_substcont: here's a list of them in case you're | |
| 2438 | * searching for places in this sub that uses a particular var: | |
| 2439 | * iters maxiters r_flags oldsave rxtainted orig dstr targ | |
| 2440 | * s m strend rx once */ | |
| a0d0e21e | 2441 | PUSHSUBST(cx); |
| 20e98b0f | 2442 | RETURNOP(cPMOP->op_pmreplrootu.op_pmreplroot); |
| a0d0e21e | 2443 | } |
| cf93c79d | 2444 | r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; |
| a0d0e21e LW |
2445 | do { |
| 2446 | if (iters++ > maxiters) | |
| cea2e8a9 | 2447 | DIE(aTHX_ "Substitution loop"); |
| 20be6587 DM |
2448 | if (RX_MATCH_TAINTED(rx)) |
| 2449 | rxtainted |= SUBST_TAINT_PAT; | |
| 07bc277f | 2450 | if (RX_MATCH_COPIED(rx) && RX_SUBBEG(rx) != orig) { |
| a0d0e21e LW |
2451 | m = s; |
| 2452 | s = orig; | |
| 07bc277f | 2453 | orig = RX_SUBBEG(rx); |
| a0d0e21e LW |
2454 | s = orig + (m - s); |
| 2455 | strend = s + (strend - m); | |
| 2456 | } | |
| 07bc277f | 2457 | m = RX_OFFS(rx)[0].start + orig; |
| db79b45b JH |
2458 | if (doutf8 && !SvUTF8(dstr)) |
| 2459 | sv_catpvn_utf8_upgrade(dstr, s, m - s, nsv); | |
| 2460 | else | |
| 2461 | sv_catpvn(dstr, s, m-s); | |
| 07bc277f | 2462 | s = RX_OFFS(rx)[0].end + orig; |
| a0d0e21e LW |
2463 | if (clen) |
| 2464 | sv_catpvn(dstr, c, clen); | |
| 2465 | if (once) | |
| 2466 | break; | |
| f9f4320a | 2467 | } while (CALLREGEXEC(rx, s, strend, orig, s == m, |
| ffc61ed2 | 2468 | TARG, NULL, r_flags)); |
| db79b45b JH |
2469 | if (doutf8 && !DO_UTF8(TARG)) |
| 2470 | sv_catpvn_utf8_upgrade(dstr, s, strend - s, nsv); | |
| 89afcb60 A |
2471 | else |
| 2472 | sv_catpvn(dstr, s, strend - s); | |
| 748a9306 | 2473 | |
| f8c7b90f | 2474 | #ifdef PERL_OLD_COPY_ON_WRITE |
| ed252734 NC |
2475 | /* The match may make the string COW. If so, brilliant, because that's |
| 2476 | just saved us one malloc, copy and free - the regexp has donated | |
| 2477 | the old buffer, and we malloc an entirely new one, rather than the | |
| 2478 | regexp malloc()ing a buffer and copying our original, only for | |
| 2479 | us to throw it away here during the substitution. */ | |
| 2480 | if (SvIsCOW(TARG)) { | |
| 2481 | sv_force_normal_flags(TARG, SV_COW_DROP_PV); | |
| 2482 | } else | |
| 2483 | #endif | |
| 2484 | { | |
| 8bd4d4c5 | 2485 | SvPV_free(TARG); |
| ed252734 | 2486 | } |
| f880fe2f | 2487 | SvPV_set(TARG, SvPVX(dstr)); |
| 748a9306 LW |
2488 | SvCUR_set(TARG, SvCUR(dstr)); |
| 2489 | SvLEN_set(TARG, SvLEN(dstr)); | |
| f272994b | 2490 | doutf8 |= DO_UTF8(dstr); |
| 6136c704 | 2491 | SvPV_set(dstr, NULL); |
| 748a9306 | 2492 | |
| f878fbec | 2493 | SPAGAIN; |
| 4f4d7508 DC |
2494 | if (rpm->op_pmflags & PMf_NONDESTRUCT) |
| 2495 | PUSHs(TARG); | |
| 2496 | else | |
| 2497 | mPUSHi((I32)iters); | |
| a0d0e21e | 2498 | } |
| f1a76097 DM |
2499 | (void)SvPOK_only_UTF8(TARG); |
| 2500 | if (doutf8) | |
| 2501 | SvUTF8_on(TARG); | |
| 20be6587 | 2502 | |
| ef07e810 | 2503 | /* See "how taint works" above */ |
| 20be6587 DM |
2504 | if (PL_tainting) { |
| 2505 | if ((rxtainted & SUBST_TAINT_PAT) || | |
| 2506 | ((rxtainted & (SUBST_TAINT_STR|SUBST_TAINT_RETAINT)) == | |
| 2507 | (SUBST_TAINT_STR|SUBST_TAINT_RETAINT)) | |
| 2508 | ) | |
| 2509 | (RX_MATCH_TAINTED_on(rx)); /* taint $1 et al */ | |
| 2510 | ||
| 2511 | if (!(rxtainted & SUBST_TAINT_BOOLRET) | |
| 2512 | && (rxtainted & (SUBST_TAINT_STR|SUBST_TAINT_PAT)) | |
| 2513 | ) | |
| 2514 | SvTAINTED_on(TOPs); /* taint return value */ | |
| 2515 | else | |
| 2516 | SvTAINTED_off(TOPs); /* may have got tainted earlier */ | |
| 2517 | ||
| 2518 | /* needed for mg_set below */ | |
| 2519 | PL_tainted = | |
| 2520 | cBOOL(rxtainted & (SUBST_TAINT_STR|SUBST_TAINT_PAT|SUBST_TAINT_REPL)); | |
| 2521 | SvTAINT(TARG); | |
| 2522 | } | |
| 2523 | SvSETMAGIC(TARG); /* PL_tainted must be correctly set for this mg_set */ | |
| 2524 | TAINT_NOT; | |
| f1a76097 DM |
2525 | LEAVE_SCOPE(oldsave); |
| 2526 | RETURN; | |
| a0d0e21e LW |
2527 | } |
| 2528 | ||
| 2529 | PP(pp_grepwhile) | |
| 2530 | { | |
| 27da23d5 | 2531 | dVAR; dSP; |
| a0d0e21e LW |
2532 | |
| 2533 | if (SvTRUEx(POPs)) | |
| 3280af22 NIS |
2534 | PL_stack_base[PL_markstack_ptr[-1]++] = PL_stack_base[*PL_markstack_ptr]; |
| 2535 | ++*PL_markstack_ptr; | |
| b2a2a901 | 2536 | FREETMPS; |
| d343c3ef | 2537 | LEAVE_with_name("grep_item"); /* exit inner scope */ |
| a0d0e21e LW |
2538 | |
| 2539 | /* All done yet? */ | |
| 3280af22 | 2540 | if (PL_stack_base + *PL_markstack_ptr > SP) { |
| a0d0e21e | 2541 | I32 items; |
| c4420975 | 2542 | const I32 gimme = GIMME_V; |
| a0d0e21e | 2543 | |
| d343c3ef | 2544 | LEAVE_with_name("grep"); /* exit outer scope */ |
| a0d0e21e | 2545 | (void)POPMARK; /* pop src */ |
| 3280af22 | 2546 | items = --*PL_markstack_ptr - PL_markstack_ptr[-1]; |
| a0d0e21e | 2547 | (void)POPMARK; /* pop dst */ |
| 3280af22 | 2548 | SP = PL_stack_base + POPMARK; /* pop original mark */ |
| 54310121 | 2549 | if (gimme == G_SCALAR) { |
| 7cc47870 | 2550 | if (PL_op->op_private & OPpGREP_LEX) { |
| c4420975 | 2551 | SV* const sv = sv_newmortal(); |
| 7cc47870 RGS |
2552 | sv_setiv(sv, items); |
| 2553 | PUSHs(sv); | |
| 2554 | } | |
| 2555 | else { | |
| 2556 | dTARGET; | |
| 2557 | XPUSHi(items); | |
| 2558 | } | |
| a0d0e21e | 2559 | } |
| 54310121 | 2560 | else if (gimme == G_ARRAY) |
| 2561 | SP += items; | |
| a0d0e21e LW |
2562 | RETURN; |
| 2563 | } | |
| 2564 | else { | |
| 2565 | SV *src; | |
| 2566 | ||
| d343c3ef | 2567 | ENTER_with_name("grep_item"); /* enter inner scope */ |
| 1d7c1841 | 2568 | SAVEVPTR(PL_curpm); |
| a0d0e21e | 2569 | |
| 3280af22 | 2570 | src = PL_stack_base[*PL_markstack_ptr]; |
| a0d0e21e | 2571 | SvTEMP_off(src); |
| 59f00321 RGS |
2572 | if (PL_op->op_private & OPpGREP_LEX) |
| 2573 | PAD_SVl(PL_op->op_targ) = src; | |
| 2574 | else | |
| 414bf5ae | 2575 | DEFSV_set(src); |
| a0d0e21e LW |
2576 | |
| 2577 | RETURNOP(cLOGOP->op_other); | |
| 2578 | } | |
| 2579 | } | |
| 2580 | ||
| 2581 | PP(pp_leavesub) | |
| 2582 | { | |
| 27da23d5 | 2583 | dVAR; dSP; |
| a0d0e21e LW |
2584 | SV **mark; |
| 2585 | SV **newsp; | |
| 2586 | PMOP *newpm; | |
| 2587 | I32 gimme; | |
| c09156bb | 2588 | register PERL_CONTEXT *cx; |
| b0d9ce38 | 2589 | SV *sv; |
| a0d0e21e | 2590 | |
| 9850bf21 RH |
2591 | if (CxMULTICALL(&cxstack[cxstack_ix])) |
| 2592 | return 0; | |
| 2593 | ||
| a0d0e21e | 2594 | POPBLOCK(cx,newpm); |
| 5dd42e15 | 2595 | cxstack_ix++; /* temporarily protect top context */ |
| 1c846c1f | 2596 | |
| a1f49e72 | 2597 | TAINT_NOT; |
| a0d0e21e LW |
2598 | if (gimme == G_SCALAR) { |
| 2599 | MARK = newsp + 1; | |
| a29cdaf0 | 2600 | if (MARK <= SP) { |
| a8bba7fa | 2601 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
| a29cdaf0 IZ |
2602 | if (SvTEMP(TOPs)) { |
| 2603 | *MARK = SvREFCNT_inc(TOPs); | |
| 2604 | FREETMPS; | |
| 2605 | sv_2mortal(*MARK); | |
| cd06dffe GS |
2606 | } |
| 2607 | else { | |
| 959e3673 | 2608 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
| a29cdaf0 | 2609 | FREETMPS; |
| 959e3673 GS |
2610 | *MARK = sv_mortalcopy(sv); |
| 2611 | SvREFCNT_dec(sv); | |
| a29cdaf0 | 2612 | } |
| cd06dffe GS |
2613 | } |
| 2614 | else | |
| a29cdaf0 | 2615 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); |
| cd06dffe GS |
2616 | } |
| 2617 | else { | |
| f86702cc | 2618 | MEXTEND(MARK, 0); |
| 3280af22 | 2619 | *MARK = &PL_sv_undef; |
| a0d0e21e LW |
2620 | } |
| 2621 | SP = MARK; | |
| 2622 | } | |
| 54310121 | 2623 | else if (gimme == G_ARRAY) { |
| f86702cc | 2624 | for (MARK = newsp + 1; MARK <= SP; MARK++) { |
| a1f49e72 | 2625 | if (!SvTEMP(*MARK)) { |
| f86702cc | 2626 | *MARK = sv_mortalcopy(*MARK); |
| a1f49e72 CS |
2627 | TAINT_NOT; /* Each item is independent */ |
| 2628 | } | |
| f86702cc | 2629 | } |
| a0d0e21e | 2630 | } |
| f86702cc | 2631 | PUTBACK; |
| 1c846c1f | 2632 | |
| a57c6685 | 2633 | LEAVE; |
| 5dd42e15 | 2634 | cxstack_ix--; |
| b0d9ce38 | 2635 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
| 3280af22 | 2636 | PL_curpm = newpm; /* ... and pop $1 et al */ |
| a0d0e21e | 2637 | |
| b0d9ce38 | 2638 | LEAVESUB(sv); |
| f39bc417 | 2639 | return cx->blk_sub.retop; |
| a0d0e21e LW |
2640 | } |
| 2641 | ||
| cd06dffe GS |
2642 | /* This duplicates the above code because the above code must not |
| 2643 | * get any slower by more conditions */ | |
| 2644 | PP(pp_leavesublv) | |
| 2645 | { | |
| 27da23d5 | 2646 | dVAR; dSP; |
| cd06dffe GS |
2647 | SV **mark; |
| 2648 | SV **newsp; | |
| 2649 | PMOP *newpm; | |
| 2650 | I32 gimme; | |
| 2651 | register PERL_CONTEXT *cx; | |
| b0d9ce38 | 2652 | SV *sv; |
| cd06dffe | 2653 | |
| 9850bf21 RH |
2654 | if (CxMULTICALL(&cxstack[cxstack_ix])) |
| 2655 | return 0; | |
| 2656 | ||
| cd06dffe | 2657 | POPBLOCK(cx,newpm); |
| 5dd42e15 | 2658 | cxstack_ix++; /* temporarily protect top context */ |
| 1c846c1f | 2659 | |
| cd06dffe GS |
2660 | TAINT_NOT; |
| 2661 | ||
| bafb2adc | 2662 | if (CxLVAL(cx) & OPpENTERSUB_INARGS) { |
| cd06dffe GS |
2663 | /* We are an argument to a function or grep(). |
| 2664 | * This kind of lvalueness was legal before lvalue | |
| 2665 | * subroutines too, so be backward compatible: | |
| 2666 | * cannot report errors. */ | |
| 2667 | ||
| 2668 | /* Scalar context *is* possible, on the LHS of -> only, | |
| 2669 | * as in f()->meth(). But this is not an lvalue. */ | |
| 2670 | if (gimme == G_SCALAR) | |
| 2671 | goto temporise; | |
| 2672 | if (gimme == G_ARRAY) { | |
| 91e34d82 MP |
2673 | mark = newsp + 1; |
| 2674 | /* We want an array here, but padav will have left us an arrayref for an lvalue, | |
| 2675 | * so we need to expand it */ | |
| 2676 | if(SvTYPE(*mark) == SVt_PVAV) { | |
| 2677 | AV *const av = MUTABLE_AV(*mark); | |
| 2678 | const I32 maxarg = AvFILL(av) + 1; | |
| 2679 | (void)POPs; /* get rid of the array ref */ | |
| 2680 | EXTEND(SP, maxarg); | |
| 2681 | if (SvRMAGICAL(av)) { | |
| 2682 | U32 i; | |
| 2683 | for (i=0; i < (U32)maxarg; i++) { | |
| 2684 | SV ** const svp = av_fetch(av, i, FALSE); | |
| 2685 | SP[i+1] = svp | |
| 2686 | ? SvGMAGICAL(*svp) ? (mg_get(*svp), *svp) : *svp | |
| 2687 | : &PL_sv_undef; | |
| 2688 | } | |
| 2689 | } | |
| 2690 | else { | |
| 2691 | Copy(AvARRAY(av), SP+1, maxarg, SV*); | |
| 2692 | } | |
| 2693 | SP += maxarg; | |
| 2694 | PUTBACK; | |
| 2695 | } | |
| a8bba7fa | 2696 | if (!CvLVALUE(cx->blk_sub.cv)) |
| cd06dffe GS |
2697 | goto temporise_array; |
| 2698 | EXTEND_MORTAL(SP - newsp); | |
| 2699 | for (mark = newsp + 1; mark <= SP; mark++) { | |
| 2700 | if (SvTEMP(*mark)) | |
| 6f207bd3 | 2701 | NOOP; |
| cd06dffe GS |
2702 | else if (SvFLAGS(*mark) & (SVs_PADTMP | SVf_READONLY)) |
| 2703 | *mark = sv_mortalcopy(*mark); | |
| 2704 | else { | |
| 2705 | /* Can be a localized value subject to deletion. */ | |
| 2706 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
| b37c2d43 | 2707 | SvREFCNT_inc_void(*mark); |
| cd06dffe GS |
2708 | } |
| 2709 | } | |
| 2710 | } | |
| 2711 | } | |
| bafb2adc | 2712 | else if (CxLVAL(cx)) { /* Leave it as it is if we can. */ |
| cd06dffe GS |
2713 | /* Here we go for robustness, not for speed, so we change all |
| 2714 | * the refcounts so the caller gets a live guy. Cannot set | |
| 2715 | * TEMP, so sv_2mortal is out of question. */ | |
| a8bba7fa | 2716 | if (!CvLVALUE(cx->blk_sub.cv)) { |
| a57c6685 | 2717 | LEAVE; |
| 5dd42e15 | 2718 | cxstack_ix--; |
| b0d9ce38 | 2719 | POPSUB(cx,sv); |
| d470f89e | 2720 | PL_curpm = newpm; |
| b0d9ce38 | 2721 | LEAVESUB(sv); |
| d470f89e GS |
2722 | DIE(aTHX_ "Can't modify non-lvalue subroutine call"); |
| 2723 | } | |
| cd06dffe GS |
2724 | if (gimme == G_SCALAR) { |
| 2725 | MARK = newsp + 1; | |
| 2726 | EXTEND_MORTAL(1); | |
| 2727 | if (MARK == SP) { | |
| fd6c41ce | 2728 | if ((SvPADTMP(TOPs) || |
| c73030b8 FC |
2729 | (SvFLAGS(TOPs) & (SVf_READONLY | SVf_FAKE)) |
| 2730 | == SVf_READONLY | |
| 2731 | ) && | |
| 2732 | !SvSMAGICAL(TOPs)) { | |
| 2733 | LEAVE; | |
| 2734 | cxstack_ix--; | |
| 2735 | POPSUB(cx,sv); | |
| 2736 | PL_curpm = newpm; | |
| 2737 | LEAVESUB(sv); | |
| 2738 | DIE(aTHX_ "Can't return %s from lvalue subroutine", | |
| 2739 | SvREADONLY(TOPs) ? (TOPs == &PL_sv_undef) ? "undef" | |
| 2740 | : "a readonly value" : "a temporary"); | |
| 2741 | } | |
| 2742 | else { /* Can be a localized value | |
| 2743 | * subject to deletion. */ | |
| cd06dffe | 2744 | PL_tmps_stack[++PL_tmps_ix] = *mark; |
| b37c2d43 | 2745 | SvREFCNT_inc_void(*mark); |
| c73030b8 | 2746 | } |
| cd06dffe | 2747 | } |
| 69b22cd1 FC |
2748 | else { |
| 2749 | /* sub:lvalue{} will take us here. | |
| 2750 | Presumably the case of a non-empty array never happens. | |
| 2751 | */ | |
| a57c6685 | 2752 | LEAVE; |
| 5dd42e15 | 2753 | cxstack_ix--; |
| b0d9ce38 | 2754 | POPSUB(cx,sv); |
| d470f89e | 2755 | PL_curpm = newpm; |
| b0d9ce38 | 2756 | LEAVESUB(sv); |
| 69b22cd1 FC |
2757 | DIE(aTHX_ "%s", |
| 2758 | (MARK > SP | |
| 2759 | ? "Can't return undef from lvalue subroutine" | |
| 2760 | : "Array returned from lvalue subroutine in scalar " | |
| 2761 | "context" | |
| 2762 | ) | |
| 2763 | ); | |
| d470f89e | 2764 | } |
| cd06dffe GS |
2765 | SP = MARK; |
| 2766 | } | |
| 2767 | else if (gimme == G_ARRAY) { | |
| 2768 | EXTEND_MORTAL(SP - newsp); | |
| 2769 | for (mark = newsp + 1; mark <= SP; mark++) { | |
| f206cdda | 2770 | if (*mark != &PL_sv_undef |
| fd6c41ce | 2771 | && (SvPADTMP(*mark) |
| a0aa6076 FC |
2772 | || (SvFLAGS(*mark) & (SVf_READONLY|SVf_FAKE)) |
| 2773 | == SVf_READONLY | |
| 2774 | ) | |
| 2775 | ) { | |
| d470f89e GS |
2776 | /* Might be flattened array after $#array = */ |
| 2777 | PUTBACK; | |
| a57c6685 | 2778 | LEAVE; |
| 5dd42e15 | 2779 | cxstack_ix--; |
| b0d9ce38 | 2780 | POPSUB(cx,sv); |
| d470f89e | 2781 | PL_curpm = newpm; |
| b0d9ce38 | 2782 | LEAVESUB(sv); |
| f206cdda AMS |
2783 | DIE(aTHX_ "Can't return a %s from lvalue subroutine", |
| 2784 | SvREADONLY(TOPs) ? "readonly value" : "temporary"); | |
| d470f89e | 2785 | } |
| cd06dffe | 2786 | else { |
| cd06dffe GS |
2787 | /* Can be a localized value subject to deletion. */ |
| 2788 | PL_tmps_stack[++PL_tmps_ix] = *mark; | |
| b37c2d43 | 2789 | SvREFCNT_inc_void(*mark); |
| cd06dffe GS |
2790 | } |
| 2791 | } | |
| 2792 | } | |
| 2793 | } | |
| 2794 | else { | |
| 2795 | if (gimme == G_SCALAR) { | |
| 2796 | temporise: | |
| 2797 | MARK = newsp + 1; | |
| 2798 | if (MARK <= SP) { | |
| a8bba7fa | 2799 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
| cd06dffe GS |
2800 | if (SvTEMP(TOPs)) { |
| 2801 | *MARK = SvREFCNT_inc(TOPs); | |
| 2802 | FREETMPS; | |
| 2803 | sv_2mortal(*MARK); | |
| 2804 | } | |
| 2805 | else { | |
| 959e3673 | 2806 | sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ |
| cd06dffe | 2807 | FREETMPS; |
| 959e3673 GS |
2808 | *MARK = sv_mortalcopy(sv); |
| 2809 | SvREFCNT_dec(sv); | |
| cd06dffe GS |
2810 | } |
| 2811 | } | |
| 2812 | else | |
| 2813 | *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); | |
| 2814 | } | |
| 2815 | else { | |
| 2816 | MEXTEND(MARK, 0); | |
| 2817 | *MARK = &PL_sv_undef; | |
| 2818 | } | |
| 2819 | SP = MARK; | |
| 2820 | } | |
| 2821 | else if (gimme == G_ARRAY) { | |
| 2822 | temporise_array: | |
| 2823 | for (MARK = newsp + 1; MARK <= SP; MARK++) { | |
| 2824 | if (!SvTEMP(*MARK)) { | |
| 2825 | *MARK = sv_mortalcopy(*MARK); | |
| 2826 | TAINT_NOT; /* Each item is independent */ | |
| 2827 | } | |
| 2828 | } | |
| 2829 | } | |
| 2830 | } | |
| 2831 | PUTBACK; | |
| 1c846c1f | 2832 | |
| a57c6685 | 2833 | LEAVE; |
| 5dd42e15 | 2834 | cxstack_ix--; |
| b0d9ce38 | 2835 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ |
| cd06dffe GS |
2836 | PL_curpm = newpm; /* ... and pop $1 et al */ |
| 2837 | ||
| b0d9ce38 | 2838 | LEAVESUB(sv); |
| f39bc417 | 2839 | return cx->blk_sub.retop; |
| cd06dffe GS |
2840 | } |
| 2841 | ||
| a0d0e21e LW |
2842 | PP(pp_entersub) |
| 2843 | { | |
| 27da23d5 | 2844 | dVAR; dSP; dPOPss; |
| a0d0e21e | 2845 | GV *gv; |
| a0d0e21e | 2846 | register CV *cv; |
| c09156bb | 2847 | register PERL_CONTEXT *cx; |
| 5d94fbed | 2848 | I32 gimme; |
| a9c4fd4e | 2849 | const bool hasargs = (PL_op->op_flags & OPf_STACKED) != 0; |
| a0d0e21e LW |
2850 | |
| 2851 | if (!sv) | |
| cea2e8a9 | 2852 | DIE(aTHX_ "Not a CODE reference"); |
| a0d0e21e | 2853 | switch (SvTYPE(sv)) { |
| f1025168 NC |
2854 | /* This is overwhelming the most common case: */ |
| 2855 | case SVt_PVGV: | |
| 6e592b3a BM |
2856 | if (!isGV_with_GP(sv)) |
| 2857 | DIE(aTHX_ "Not a CODE reference"); | |
| 13be902c | 2858 | we_have_a_glob: |
| 159b6efe | 2859 | if (!(cv = GvCVu((const GV *)sv))) { |
| f730a42d | 2860 | HV *stash; |
| f2c0649b | 2861 | cv = sv_2cv(sv, &stash, &gv, 0); |
| f730a42d | 2862 | } |
| f1025168 | 2863 | if (!cv) { |
| a57c6685 | 2864 | ENTER; |
| f1025168 NC |
2865 | SAVETMPS; |
| 2866 | goto try_autoload; | |
| 2867 | } | |
| 2868 | break; | |
| 13be902c FC |
2869 | case SVt_PVLV: |
| 2870 | if(isGV_with_GP(sv)) goto we_have_a_glob; | |
| 2871 | /*FALLTHROUGH*/ | |
| a0d0e21e | 2872 | default: |
| 7c75014e DM |
2873 | if (sv == &PL_sv_yes) { /* unfound import, ignore */ |
| 2874 | if (hasargs) | |
| 2875 | SP = PL_stack_base + POPMARK; | |
| 4d198de3 DM |
2876 | else |
| 2877 | (void)POPMARK; | |
| 7c75014e DM |
2878 | RETURN; |
| 2879 | } | |
| 2880 | SvGETMAGIC(sv); | |
| 2881 | if (SvROK(sv)) { | |
| 93d7320b DM |
2882 | if (SvAMAGIC(sv)) { |
| 2883 | sv = amagic_deref_call(sv, to_cv_amg); | |
| 2884 | /* Don't SPAGAIN here. */ | |
| 2885 | } | |
| 7c75014e DM |
2886 | } |
| 2887 | else { | |
| a9c4fd4e | 2888 | const char *sym; |
| 780a5241 | 2889 | STRLEN len; |
| 7c75014e | 2890 | sym = SvPV_nomg_const(sv, len); |
| 15ff848f | 2891 | if (!sym) |
| cea2e8a9 | 2892 | DIE(aTHX_ PL_no_usym, "a subroutine"); |
| 533c011a | 2893 | if (PL_op->op_private & HINT_STRICT_REFS) |
| 973a7615 | 2894 | DIE(aTHX_ "Can't use string (\"%.32s\"%s) as a subroutine ref while \"strict refs\" in use", sym, len>32 ? "..." : ""); |
| 780a5241 | 2895 | cv = get_cvn_flags(sym, len, GV_ADD|SvUTF8(sv)); |
| a0d0e21e LW |
2896 | break; |
| 2897 | } | |
| ea726b52 | 2898 | cv = MUTABLE_CV(SvRV(sv)); |
| a0d0e21e LW |
2899 | if (SvTYPE(cv) == SVt_PVCV) |
| 2900 | break; | |
| 2901 | /* FALL THROUGH */ | |
| 2902 | case SVt_PVHV: | |
| 2903 | case SVt_PVAV: | |
| cea2e8a9 | 2904 | DIE(aTHX_ "Not a CODE reference"); |
| f1025168 | 2905 | /* This is the second most common case: */ |
| a0d0e21e | 2906 | case SVt_PVCV: |
| ea726b52 | 2907 | cv = MUTABLE_CV(sv); |
| a0d0e21e | 2908 | break; |
| a0d0e21e LW |
2909 | } |
| 2910 | ||
| a57c6685 | 2911 | ENTER; |
| a0d0e21e LW |
2912 | SAVETMPS; |
| 2913 | ||
| 2914 | retry: | |
| 541ed3a9 FC |
2915 | if (CvCLONE(cv) && ! CvCLONED(cv)) |
| 2916 | DIE(aTHX_ "Closure prototype called"); | |
| a0d0e21e | 2917 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
| 2f349aa0 NC |
2918 | GV* autogv; |
| 2919 | SV* sub_name; | |
| 2920 | ||
| 2921 | /* anonymous or undef'd function leaves us no recourse */ | |
| 2922 | if (CvANON(cv) || !(gv = CvGV(cv))) | |
| 2923 | DIE(aTHX_ "Undefined subroutine called"); | |
| 2924 | ||
| 2925 | /* autoloaded stub? */ | |
| 2926 | if (cv != GvCV(gv)) { | |
| 2927 | cv = GvCV(gv); | |
| 2928 | } | |
| 2929 | /* should call AUTOLOAD now? */ | |
| 2930 | else { | |
| 7e623da3 | 2931 | try_autoload: |
| 2f349aa0 | 2932 | if ((autogv = gv_autoload4(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), |
| 7e623da3 | 2933 | FALSE))) |
| 2f349aa0 NC |
2934 | { |
| 2935 | cv = GvCV(autogv); | |
| 2936 | } | |
| 2937 | /* sorry */ | |
| 2938 | else { | |
| 2939 | sub_name = sv_newmortal(); | |
| 6136c704 | 2940 | gv_efullname3(sub_name, gv, NULL); |
| be2597df | 2941 | DIE(aTHX_ "Undefined subroutine &%"SVf" called", SVfARG(sub_name)); |
| 2f349aa0 NC |
2942 | } |
| 2943 | } | |
| 2944 | if (!cv) | |
| 2945 | DIE(aTHX_ "Not a CODE reference"); | |
| 2946 | goto retry; | |
| a0d0e21e LW |
2947 | } |
| 2948 | ||
| 54310121 | 2949 | gimme = GIMME_V; |
| 67caa1fe | 2950 | if ((PL_op->op_private & OPpENTERSUB_DB) && GvCV(PL_DBsub) && !CvNODEBUG(cv)) { |
| 005a8a35 | 2951 | Perl_get_db_sub(aTHX_ &sv, cv); |
| a9ef256d NC |
2952 | if (CvISXSUB(cv)) |
| 2953 | PL_curcopdb = PL_curcop; | |
| 1ad62f64 BR |
2954 | if (CvLVALUE(cv)) { |
| 2955 | /* check for lsub that handles lvalue subroutines */ | |
| ae5c1e95 | 2956 | cv = GvCV(gv_HVadd(gv_fetchpvs("DB::lsub", GV_ADDMULTI, SVt_PVHV))); |
| 1ad62f64 BR |
2957 | /* if lsub not found then fall back to DB::sub */ |
| 2958 | if (!cv) cv = GvCV(PL_DBsub); | |
| 2959 | } else { | |
| 2960 | cv = GvCV(PL_DBsub); | |
| 2961 | } | |
| a9ef256d | 2962 | |
| ccafdc96 RGS |
2963 | if (!cv || (!CvXSUB(cv) && !CvSTART(cv))) |
| 2964 | DIE(aTHX_ "No DB::sub routine defined"); | |
| 67caa1fe | 2965 | } |
| a0d0e21e | 2966 | |
| aed2304a | 2967 | if (!(CvISXSUB(cv))) { |
| f1025168 | 2968 | /* This path taken at least 75% of the time */ |
| a0d0e21e LW |
2969 | dMARK; |
| 2970 | register I32 items = SP - MARK; | |
| 0bcc34c2 | 2971 | AV* const padlist = CvPADLIST(cv); |
| a0d0e21e LW |
2972 | PUSHBLOCK(cx, CXt_SUB, MARK); |
| 2973 | PUSHSUB(cx); | |
| f39bc417 | 2974 | cx->blk_sub.retop = PL_op->op_next; |
| a0d0e21e | 2975 | CvDEPTH(cv)++; |
| 6b35e009 GS |
2976 | /* XXX This would be a natural place to set C<PL_compcv = cv> so |
| 2977 | * that eval'' ops within this sub know the correct lexical space. | |
| a3985cdc DM |
2978 | * Owing the speed considerations, we choose instead to search for |
| 2979 | * the cv using find_runcv() when calling doeval(). | |
| 6b35e009 | 2980 | */ |
| 3a76ca88 RGS |
2981 | if (CvDEPTH(cv) >= 2) { |
| 2982 | PERL_STACK_OVERFLOW_CHECK(); | |
| 2983 | pad_push(padlist, CvDEPTH(cv)); | |
| a0d0e21e | 2984 | } |
| 3a76ca88 RGS |
2985 | SAVECOMPPAD(); |
| 2986 | PAD_SET_CUR_NOSAVE(padlist, CvDEPTH(cv)); | |
| 2987 | if (hasargs) { | |
| 10533ace | 2988 | AV *const av = MUTABLE_AV(PAD_SVl(0)); |
| 221373f0 GS |
2989 | if (AvREAL(av)) { |
| 2990 | /* @_ is normally not REAL--this should only ever | |
| 2991 | * happen when DB::sub() calls things that modify @_ */ | |
| 2992 | av_clear(av); | |
| 2993 | AvREAL_off(av); | |
| 2994 | AvREIFY_on(av); | |
| 2995 | } | |
| 3280af22 | 2996 | cx->blk_sub.savearray = GvAV(PL_defgv); |
| 502c6561 | 2997 | GvAV(PL_defgv) = MUTABLE_AV(SvREFCNT_inc_simple(av)); |
| dd2155a4 | 2998 | CX_CURPAD_SAVE(cx->blk_sub); |
| 6d4ff0d2 | 2999 | cx->blk_sub.argarray = av; |
| a0d0e21e LW |
3000 | ++MARK; |
| 3001 | ||
| 3002 | if (items > AvMAX(av) + 1) { | |
| 504618e9 | 3003 | SV **ary = AvALLOC(av); |
| a0d0e21e LW |
3004 | if (AvARRAY(av) != ary) { |
| 3005 | AvMAX(av) += AvARRAY(av) - AvALLOC(av); | |
| 9c6bc640 | 3006 | AvARRAY(av) = ary; |
| a0d0e21e LW |
3007 | } |
| 3008 | if (items > AvMAX(av) + 1) { | |
| 3009 | AvMAX(av) = items - 1; | |
| 3010 | Renew(ary,items,SV*); | |
| 3011 | AvALLOC(av) = ary; | |
| 9c6bc640 | 3012 | AvARRAY(av) = ary; |
| a0d0e21e LW |
3013 | } |
| 3014 | } | |
| 3015 | Copy(MARK,AvARRAY(av),items,SV*); | |
| 93965878 | 3016 | AvFILLp(av) = items - 1; |
| 1c846c1f | 3017 | |
| a0d0e21e LW |
3018 | while (items--) { |
| 3019 | if (*MARK) | |
| 3020 | SvTEMP_off(*MARK); | |
| 3021 | MARK++; | |
| 3022 | } | |
| 3023 | } | |
| 4a925ff6 GS |
3024 | /* warning must come *after* we fully set up the context |
| 3025 | * stuff so that __WARN__ handlers can safely dounwind() | |
| 3026 | * if they want to | |
| 3027 | */ | |
| 2b9dff67 | 3028 | if (CvDEPTH(cv) == PERL_SUB_DEPTH_WARN && ckWARN(WARN_RECURSION) |
| 4a925ff6 GS |
3029 | && !(PERLDB_SUB && cv == GvCV(PL_DBsub))) |
| 3030 | sub_crush_depth(cv); | |
| a0d0e21e LW |
3031 | RETURNOP(CvSTART(cv)); |
| 3032 | } | |
| f1025168 | 3033 | else { |
| 3a76ca88 | 3034 | I32 markix = TOPMARK; |
| f1025168 | 3035 | |
| 3a76ca88 | 3036 | PUTBACK; |
| f1025168 | 3037 | |
| 3a76ca88 RGS |
3038 | if (!hasargs) { |
| 3039 | /* Need to copy @_ to stack. Alternative may be to | |
| 3040 | * switch stack to @_, and copy return values | |
| 3041 | * back. This would allow popping @_ in XSUB, e.g.. XXXX */ | |
| 3042 | AV * const av = GvAV(PL_defgv); | |
| 3043 | const I32 items = AvFILLp(av) + 1; /* @_ is not tieable */ | |
| 3044 | ||
| 3045 | if (items) { | |
| 3046 | /* Mark is at the end of the stack. */ | |
| 3047 | EXTEND(SP, items); | |
| 3048 | Copy(AvARRAY(av), SP + 1, items, SV*); | |
| 3049 | SP += items; | |
| 3050 | PUTBACK ; | |
| 3051 | } | |
| 3052 | } | |
| 3053 | /* We assume first XSUB in &DB::sub is the called one. */ | |
| 3054 | if (PL_curcopdb) { | |
| 3055 | SAVEVPTR(PL_curcop); | |
| 3056 | PL_curcop = PL_curcopdb; | |
| 3057 | PL_curcopdb = NULL; | |
| 3058 | } | |
| 3059 | /* Do we need to open block here? XXXX */ | |
| 72df79cf GF |
3060 | |
| 3061 | /* CvXSUB(cv) must not be NULL because newXS() refuses NULL xsub address */ | |
| 3062 | assert(CvXSUB(cv)); | |
| 16c91539 | 3063 | CvXSUB(cv)(aTHX_ cv); |
| 3a76ca88 RGS |
3064 | |
| 3065 | /* Enforce some sanity in scalar context. */ | |
| 3066 | if (gimme == G_SCALAR && ++markix != PL_stack_sp - PL_stack_base ) { | |
| 3067 | if (markix > PL_stack_sp - PL_stack_base) | |
| 3068 | *(PL_stack_base + markix) = &PL_sv_undef; | |
| 3069 | else | |
| 3070 | *(PL_stack_base + markix) = *PL_stack_sp; | |
| 3071 | PL_stack_sp = PL_stack_base + markix; | |
| 3072 | } | |
| a57c6685 | 3073 | LEAVE; |
| f1025168 NC |
3074 | return NORMAL; |
| 3075 | } | |
| a0d0e21e LW |
3076 | } |
| 3077 | ||
| 44a8e56a | 3078 | void |
| 864dbfa3 | 3079 | Perl_sub_crush_depth(pTHX_ CV *cv) |
| 44a8e56a | 3080 | { |
| 7918f24d NC |
3081 | PERL_ARGS_ASSERT_SUB_CRUSH_DEPTH; |
| 3082 | ||
| 44a8e56a | 3083 | if (CvANON(cv)) |
| 9014280d | 3084 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on anonymous subroutine"); |
| 44a8e56a | 3085 | else { |
| aec46f14 | 3086 | SV* const tmpstr = sv_newmortal(); |
| 6136c704 | 3087 | gv_efullname3(tmpstr, CvGV(cv), NULL); |
| 35c1215d | 3088 | Perl_warner(aTHX_ packWARN(WARN_RECURSION), "Deep recursion on subroutine \"%"SVf"\"", |
| be2597df | 3089 | SVfARG(tmpstr)); |
| 44a8e56a | 3090 | } |
| 3091 | } | |
| 3092 | ||
| a0d0e21e LW |
3093 | PP(pp_aelem) |
| 3094 | { | |
| 97aff369 | 3095 | dVAR; dSP; |
| a0d0e21e | 3096 | SV** svp; |
| a3b680e6 | 3097 | SV* const elemsv = POPs; |
| d804643f | 3098 | IV elem = SvIV(elemsv); |
| 502c6561 | 3099 | AV *const av = MUTABLE_AV(POPs); |
| e1ec3a88 AL |
3100 | const U32 lval = PL_op->op_flags & OPf_MOD || LVRET; |
| 3101 | const U32 defer = (PL_op->op_private & OPpLVAL_DEFER) && (elem > av_len(av)); | |
| 4ad10a0b VP |
3102 | const bool localizing = PL_op->op_private & OPpLVAL_INTRO; |
| 3103 | bool preeminent = TRUE; | |
| be6c24e0 | 3104 | SV *sv; |
| a0d0e21e | 3105 | |
| e35c1634 | 3106 | if (SvROK(elemsv) && !SvGAMAGIC(elemsv) && ckWARN(WARN_MISC)) |
| 95b63a38 JH |
3107 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
| 3108 | "Use of reference \"%"SVf"\" as array index", | |
| be2597df | 3109 | SVfARG(elemsv)); |
| 748a9306 | 3110 | if (elem > 0) |
| fc15ae8f | 3111 | elem -= CopARYBASE_get(PL_curcop); |
| a0d0e21e LW |
3112 | if (SvTYPE(av) != SVt_PVAV) |
| 3113 | RETPUSHUNDEF; | |
| 4ad10a0b VP |
3114 | |
| 3115 | if (localizing) { | |
| 3116 | MAGIC *mg; | |
| 3117 | HV *stash; | |
| 3118 | ||
| 3119 | /* If we can determine whether the element exist, | |
| 3120 | * Try to preserve the existenceness of a tied array | |
| 3121 | * element by using EXISTS and DELETE if possible. | |
| 3122 | * Fallback to FETCH and STORE otherwise. */ | |
| 3123 | if (SvCANEXISTDELETE(av)) | |
| 3124 | preeminent = av_exists(av, elem); | |
| 3125 | } | |
| 3126 | ||
| 68dc0745 | 3127 | svp = av_fetch(av, elem, lval && !defer); |
| a0d0e21e | 3128 | if (lval) { |
| 2b573ace | 3129 | #ifdef PERL_MALLOC_WRAP |
| 2b573ace | 3130 | if (SvUOK(elemsv)) { |
| a9c4fd4e | 3131 | const UV uv = SvUV(elemsv); |
| 2b573ace JH |
3132 | elem = uv > IV_MAX ? IV_MAX : uv; |
| 3133 | } | |
| 3134 | else if (SvNOK(elemsv)) | |
| 3135 | elem = (IV)SvNV(elemsv); | |
| a3b680e6 AL |
3136 | if (elem > 0) { |
| 3137 | static const char oom_array_extend[] = | |
| 3138 | "Out of memory during array extend"; /* Duplicated in av.c */ | |
| 2b573ace | 3139 | MEM_WRAP_CHECK_1(elem,SV*,oom_array_extend); |
| a3b680e6 | 3140 | } |
| 2b573ace | 3141 | #endif |
| 3280af22 | 3142 | if (!svp || *svp == &PL_sv_undef) { |
| 68dc0745 | 3143 | SV* lv; |
| 3144 | if (!defer) | |
| cea2e8a9 | 3145 | DIE(aTHX_ PL_no_aelem, elem); |
| 68dc0745 | 3146 | lv = sv_newmortal(); |
| 3147 | sv_upgrade(lv, SVt_PVLV); | |
| 3148 | LvTYPE(lv) = 'y'; | |
| a0714e2c | 3149 | sv_magic(lv, NULL, PERL_MAGIC_defelem, NULL, 0); |
| b37c2d43 | 3150 | LvTARG(lv) = SvREFCNT_inc_simple(av); |
| 68dc0745 | 3151 | LvTARGOFF(lv) = elem; |
| 3152 | LvTARGLEN(lv) = 1; | |
| 3153 | PUSHs(lv); | |
| 3154 | RETURN; | |
| 3155 | } | |
| 4ad10a0b VP |
3156 | if (localizing) { |
| 3157 | if (preeminent) | |
| 3158 | save_aelem(av, elem, svp); | |
| 3159 | else | |
| 3160 | SAVEADELETE(av, elem); | |
| 3161 | } | |
| 533c011a NIS |
3162 | else if (PL_op->op_private & OPpDEREF) |
| 3163 | vivify_ref(*svp, PL_op->op_private & OPpDEREF); | |
| a0d0e21e | 3164 | } |
| 3280af22 | 3165 | sv = (svp ? *svp : &PL_sv_undef); |
| 39cf747a | 3166 | if (!lval && SvRMAGICAL(av) && SvGMAGICAL(sv)) /* see note in pp_helem() */ |
| fd69380d | 3167 | mg_get(sv); |
| be6c24e0 | 3168 | PUSHs(sv); |
| a0d0e21e LW |
3169 | RETURN; |
| 3170 | } | |
| 3171 | ||
| 02a9e968 | 3172 | void |
| 864dbfa3 | 3173 | Perl_vivify_ref(pTHX_ SV *sv, U32 to_what) |
| 02a9e968 | 3174 | { |
| 7918f24d NC |
3175 | PERL_ARGS_ASSERT_VIVIFY_REF; |
| 3176 | ||
| 5b295bef | 3177 | SvGETMAGIC(sv); |
| 02a9e968 CS |
3178 | if (!SvOK(sv)) { |
| 3179 | if (SvREADONLY(sv)) | |
| 6ad8f254 | 3180 | Perl_croak_no_modify(aTHX); |
| 43230e26 | 3181 | prepare_SV_for_RV(sv); |
| 68dc0745 | 3182 | switch (to_what) { |
| 5f05dabc | 3183 | case OPpDEREF_SV: |
| 561b68a9 | 3184 | SvRV_set(sv, newSV(0)); |
| 5f05dabc | 3185 | break; |
| 3186 | case OPpDEREF_AV: | |
| ad64d0ec | 3187 | SvRV_set(sv, MUTABLE_SV(newAV())); |
| 5f05dabc | 3188 | break; |
| 3189 | case OPpDEREF_HV: | |
| ad64d0ec | 3190 | SvRV_set(sv, MUTABLE_SV(newHV())); |
| 5f05dabc | 3191 | break; |
| 3192 | } | |
| 02a9e968 CS |
3193 | SvROK_on(sv); |
| 3194 | SvSETMAGIC(sv); | |
| 3195 | } | |
| 3196 | } | |
| 3197 | ||
| a0d0e21e LW |
3198 | PP(pp_method) |
| 3199 | { | |
| 97aff369 | 3200 | dVAR; dSP; |
| 890ce7af | 3201 | SV* const sv = TOPs; |
| f5d5a27c CS |
3202 | |
| 3203 | if (SvROK(sv)) { | |
| 890ce7af | 3204 | SV* const rsv = SvRV(sv); |
| f5d5a27c CS |
3205 | if (SvTYPE(rsv) == SVt_PVCV) { |
| 3206 | SETs(rsv); | |
| 3207 | RETURN; | |
| 3208 | } | |
| 3209 | } | |
| 3210 | ||
| 4608196e | 3211 | SETs(method_common(sv, NULL)); |
| f5d5a27c CS |
3212 | RETURN; |
| 3213 | } | |
| 3214 | ||
| 3215 | PP(pp_method_named) | |
| 3216 | { | |
| 97aff369 | 3217 | dVAR; dSP; |
| 890ce7af | 3218 | SV* const sv = cSVOP_sv; |
| c158a4fd | 3219 | U32 hash = SvSHARED_HASH(sv); |
| f5d5a27c CS |
3220 | |
| 3221 | XPUSHs(method_common(sv, &hash)); | |
| 3222 | RETURN; | |
| 3223 | } | |
| 3224 | ||
| 3225 | STATIC SV * | |
| 3226 | S_method_common(pTHX_ SV* meth, U32* hashp) | |
| 3227 | { | |
| 97aff369 | 3228 | dVAR; |
| a0d0e21e LW |
3229 | SV* ob; |
| 3230 | GV* gv; | |
| 56304f61 | 3231 | HV* stash; |
| 6136c704 | 3232 | const char* packname = NULL; |
| a0714e2c | 3233 | SV *packsv = NULL; |
| ac91690f | 3234 | STRLEN packlen; |
| 46c461b5 | 3235 | SV * const sv = *(PL_stack_base + TOPMARK + 1); |
| f5d5a27c | 3236 | |
| 7918f24d NC |
3237 | PERL_ARGS_ASSERT_METHOD_COMMON; |
| 3238 | ||
| 4f1b7578 | 3239 | if (!sv) |
| a214957f VP |
3240 | Perl_croak(aTHX_ "Can't call method \"%"SVf"\" on an undefined value", |
| 3241 | SVfARG(meth)); | |
| 4f1b7578 | 3242 | |
| 5b295bef | 3243 | SvGETMAGIC(sv); |
| a0d0e21e | 3244 | if (SvROK(sv)) |
| ad64d0ec | 3245 | ob = MUTABLE_SV(SvRV(sv)); |
| a0d0e21e LW |
3246 | else { |
| 3247 | GV* iogv; | |
| a0d0e21e | 3248 | |
| af09ea45 | 3249 | /* this isn't a reference */ |
| 5c144d81 | 3250 | if(SvOK(sv) && (packname = SvPV_const(sv, packlen))) { |
| b464bac0 | 3251 | const HE* const he = hv_fetch_ent(PL_stashcache, sv, 0, 0); |
| 081fc587 | 3252 | if (he) { |
| 5e6396ae | 3253 | stash = INT2PTR(HV*,SvIV(HeVAL(he))); |
| 081fc587 AB |
3254 | goto fetch; |
| 3255 | } | |
| 3256 | } | |
| 3257 | ||
| a0d0e21e | 3258 | if (!SvOK(sv) || |
| 05f5af9a | 3259 | !(packname) || |
| f776e3cd | 3260 | !(iogv = gv_fetchsv(sv, 0, SVt_PVIO)) || |
| ad64d0ec | 3261 | !(ob=MUTABLE_SV(GvIO(iogv)))) |
| a0d0e21e | 3262 | { |
| af09ea45 | 3263 | /* this isn't the name of a filehandle either */ |
| 1c846c1f | 3264 | if (!packname || |
| fd400ab9 | 3265 | ((UTF8_IS_START(*packname) && DO_UTF8(sv)) |
| b86a2fa7 | 3266 | ? !isIDFIRST_utf8((U8*)packname) |
| 834a4ddd LW |
3267 | : !isIDFIRST(*packname) |
| 3268 | )) | |
| 3269 | { | |
| a214957f VP |
3270 | Perl_croak(aTHX_ "Can't call method \"%"SVf"\" %s", |
| 3271 | SVfARG(meth), | |
| f5d5a27c CS |
3272 | SvOK(sv) ? "without a package or object reference" |
| 3273 | : "on an undefined value"); | |
| 834a4ddd | 3274 | } |
| af09ea45 | 3275 | /* assume it's a package name */ |
| da51bb9b | 3276 | stash = gv_stashpvn(packname, packlen, 0); |
| 0dae17bd GS |
3277 | if (!stash) |
| 3278 | packsv = sv; | |
| 081fc587 | 3279 | else { |
| d4c19fe8 | 3280 | SV* const ref = newSViv(PTR2IV(stash)); |
| 04fe65b0 | 3281 | (void)hv_store(PL_stashcache, packname, packlen, ref, 0); |
| 7e8961ec | 3282 | } |
| ac91690f | 3283 | goto fetch; |
| a0d0e21e | 3284 | } |
| af09ea45 | 3285 | /* it _is_ a filehandle name -- replace with a reference */ |
| ad64d0ec | 3286 | *(PL_stack_base + TOPMARK + 1) = sv_2mortal(newRV(MUTABLE_SV(iogv))); |
| a0d0e21e LW |
3287 | } |
| 3288 | ||
| af09ea45 | 3289 | /* if we got here, ob should be a reference or a glob */ |
| f0d43078 | 3290 | if (!ob || !(SvOBJECT(ob) |
| 6e592b3a BM |
3291 | || (SvTYPE(ob) == SVt_PVGV |
| 3292 | && isGV_with_GP(ob) | |
| 159b6efe | 3293 | && (ob = MUTABLE_SV(GvIO((const GV *)ob))) |
| f0d43078 GS |
3294 | && SvOBJECT(ob)))) |
| 3295 | { | |
| a214957f | 3296 | const char * const name = SvPV_nolen_const(meth); |
| f5d5a27c | 3297 | Perl_croak(aTHX_ "Can't call method \"%s\" on unblessed reference", |
| 59e7186f | 3298 | (SvSCREAM(meth) && strEQ(name,"isa")) ? "DOES" : |
| f5d5a27c | 3299 | name); |
| f0d43078 | 3300 | } |
| a0d0e21e | 3301 | |
| 56304f61 | 3302 | stash = SvSTASH(ob); |
| a0d0e21e | 3303 | |
| ac91690f | 3304 | fetch: |
| af09ea45 IK |
3305 | /* NOTE: stash may be null, hope hv_fetch_ent and |
| 3306 | gv_fetchmethod can cope (it seems they can) */ | |
| 3307 | ||
| f5d5a27c CS |
3308 | /* shortcut for simple names */ |
| 3309 | if (hashp) { | |
| b464bac0 | 3310 | const HE* const he = hv_fetch_ent(stash, meth, 0, *hashp); |
| f5d5a27c | 3311 | if (he) { |
| 159b6efe | 3312 | gv = MUTABLE_GV(HeVAL(he)); |
| f5d5a27c | 3313 | if (isGV(gv) && GvCV(gv) && |
| e1a479c5 | 3314 | (!GvCVGEN(gv) || GvCVGEN(gv) |
| dd69841b | 3315 | == (PL_sub_generation + HvMROMETA(stash)->cache_gen))) |
| ad64d0ec | 3316 | return MUTABLE_SV(GvCV(gv)); |
| f5d5a27c CS |
3317 | } |
| 3318 | } | |
| 3319 | ||
| a214957f VP |
3320 | gv = gv_fetchmethod_flags(stash ? stash : MUTABLE_HV(packsv), |
| 3321 | SvPV_nolen_const(meth), | |
| 256d1bb2 | 3322 | GV_AUTOLOAD | GV_CROAK); |
| 9b9d0b15 | 3323 | |
| 256d1bb2 | 3324 | assert(gv); |
| 9b9d0b15 | 3325 | |
| ad64d0ec | 3326 | return isGV(gv) ? MUTABLE_SV(GvCV(gv)) : MUTABLE_SV(gv); |
| a0d0e21e | 3327 | } |
| 241d1a3b NC |
3328 | |
| 3329 | /* | |
| 3330 | * Local variables: | |
| 3331 | * c-indentation-style: bsd | |
| 3332 | * c-basic-offset: 4 | |
| 3333 | * indent-tabs-mode: t | |
| 3334 | * End: | |
| 3335 | * | |
| 37442d52 RGS |
3336 | * ex: set ts=8 sts=4 sw=4 noet: |
| 3337 | */ |