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| Commit | Line | Data |
|---|---|---|
| a0d0e21e | 1 | /* pp.c |
| 79072805 | 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 | |
| 79072805 | 5 | * |
| a0d0e21e LW |
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. | |
| 79072805 | 8 | * |
| a0d0e21e LW |
9 | */ |
| 10 | ||
| 11 | /* | |
| 4ac71550 TC |
12 | * 'It's a big house this, and very peculiar. Always a bit more |
| 13 | * to discover, and no knowing what you'll find round a corner. | |
| 14 | * And Elves, sir!' --Samwise Gamgee | |
| 15 | * | |
| 16 | * [p.225 of _The Lord of the Rings_, II/i: "Many Meetings"] | |
| a0d0e21e | 17 | */ |
| 79072805 | 18 | |
| 166f8a29 DM |
19 | /* This file contains general pp ("push/pop") functions that execute the |
| 20 | * opcodes that make up a perl program. A typical pp function expects to | |
| 21 | * find its arguments on the stack, and usually pushes its results onto | |
| 22 | * the stack, hence the 'pp' terminology. Each OP structure contains | |
| 23 | * a pointer to the relevant pp_foo() function. | |
| 24 | */ | |
| 25 | ||
| 79072805 | 26 | #include "EXTERN.h" |
| 864dbfa3 | 27 | #define PERL_IN_PP_C |
| 79072805 | 28 | #include "perl.h" |
| 77bc9082 | 29 | #include "keywords.h" |
| 79072805 | 30 | |
| a4af207c JH |
31 | #include "reentr.h" |
| 32 | ||
| dfe9444c AD |
33 | /* XXX I can't imagine anyone who doesn't have this actually _needs_ |
| 34 | it, since pid_t is an integral type. | |
| 35 | --AD 2/20/1998 | |
| 36 | */ | |
| 37 | #ifdef NEED_GETPID_PROTO | |
| 38 | extern Pid_t getpid (void); | |
| 8ac85365 NIS |
39 | #endif |
| 40 | ||
| 0630166f SP |
41 | /* |
| 42 | * Some BSDs and Cygwin default to POSIX math instead of IEEE. | |
| 43 | * This switches them over to IEEE. | |
| 44 | */ | |
| 45 | #if defined(LIBM_LIB_VERSION) | |
| 46 | _LIB_VERSION_TYPE _LIB_VERSION = _IEEE_; | |
| 47 | #endif | |
| 48 | ||
| 13017935 SM |
49 | /* variations on pp_null */ |
| 50 | ||
| 93a17b20 LW |
51 | PP(pp_stub) |
| 52 | { | |
| 97aff369 | 53 | dVAR; |
| 39644a26 | 54 | dSP; |
| 54310121 | 55 | if (GIMME_V == G_SCALAR) |
| 3280af22 | 56 | XPUSHs(&PL_sv_undef); |
| 93a17b20 LW |
57 | RETURN; |
| 58 | } | |
| 59 | ||
| 79072805 LW |
60 | /* Pushy stuff. */ |
| 61 | ||
| 93a17b20 LW |
62 | PP(pp_padav) |
| 63 | { | |
| 97aff369 | 64 | dVAR; dSP; dTARGET; |
| 13017935 | 65 | I32 gimme; |
| e190e9b4 | 66 | assert(SvTYPE(TARG) == SVt_PVAV); |
| 533c011a | 67 | if (PL_op->op_private & OPpLVAL_INTRO) |
| a5911867 RGS |
68 | if (!(PL_op->op_private & OPpPAD_STATE)) |
| 69 | SAVECLEARSV(PAD_SVl(PL_op->op_targ)); | |
| 85e6fe83 | 70 | EXTEND(SP, 1); |
| 533c011a | 71 | if (PL_op->op_flags & OPf_REF) { |
| 85e6fe83 | 72 | PUSHs(TARG); |
| 93a17b20 | 73 | RETURN; |
| 40c94d11 FC |
74 | } else if (PL_op->op_private & OPpMAYBE_LVSUB) { |
| 75 | const I32 flags = is_lvalue_sub(); | |
| 76 | if (flags && !(flags & OPpENTERSUB_INARGS)) { | |
| 78f9721b SM |
77 | if (GIMME == G_SCALAR) |
| 78 | Perl_croak(aTHX_ "Can't return array to lvalue scalar context"); | |
| 79 | PUSHs(TARG); | |
| 80 | RETURN; | |
| 40c94d11 | 81 | } |
| 85e6fe83 | 82 | } |
| 13017935 SM |
83 | gimme = GIMME_V; |
| 84 | if (gimme == G_ARRAY) { | |
| 502c6561 | 85 | const I32 maxarg = AvFILL(MUTABLE_AV(TARG)) + 1; |
| 85e6fe83 | 86 | EXTEND(SP, maxarg); |
| 93965878 NIS |
87 | if (SvMAGICAL(TARG)) { |
| 88 | U32 i; | |
| eb160463 | 89 | for (i=0; i < (U32)maxarg; i++) { |
| 502c6561 | 90 | SV * const * const svp = av_fetch(MUTABLE_AV(TARG), i, FALSE); |
| 3280af22 | 91 | SP[i+1] = (svp) ? *svp : &PL_sv_undef; |
| 93965878 NIS |
92 | } |
| 93 | } | |
| 94 | else { | |
| 502c6561 | 95 | Copy(AvARRAY((const AV *)TARG), SP+1, maxarg, SV*); |
| 93965878 | 96 | } |
| 85e6fe83 LW |
97 | SP += maxarg; |
| 98 | } | |
| 13017935 | 99 | else if (gimme == G_SCALAR) { |
| 1b6737cc | 100 | SV* const sv = sv_newmortal(); |
| 502c6561 | 101 | const I32 maxarg = AvFILL(MUTABLE_AV(TARG)) + 1; |
| 85e6fe83 LW |
102 | sv_setiv(sv, maxarg); |
| 103 | PUSHs(sv); | |
| 104 | } | |
| 105 | RETURN; | |
| 93a17b20 LW |
106 | } |
| 107 | ||
| 108 | PP(pp_padhv) | |
| 109 | { | |
| 97aff369 | 110 | dVAR; dSP; dTARGET; |
| 54310121 | 111 | I32 gimme; |
| 112 | ||
| e190e9b4 | 113 | assert(SvTYPE(TARG) == SVt_PVHV); |
| 93a17b20 | 114 | XPUSHs(TARG); |
| 533c011a | 115 | if (PL_op->op_private & OPpLVAL_INTRO) |
| a5911867 RGS |
116 | if (!(PL_op->op_private & OPpPAD_STATE)) |
| 117 | SAVECLEARSV(PAD_SVl(PL_op->op_targ)); | |
| 533c011a | 118 | if (PL_op->op_flags & OPf_REF) |
| 93a17b20 | 119 | RETURN; |
| 40c94d11 FC |
120 | else if (PL_op->op_private & OPpMAYBE_LVSUB) { |
| 121 | const I32 flags = is_lvalue_sub(); | |
| 122 | if (flags && !(flags & OPpENTERSUB_INARGS)) { | |
| 78f9721b SM |
123 | if (GIMME == G_SCALAR) |
| 124 | Perl_croak(aTHX_ "Can't return hash to lvalue scalar context"); | |
| 125 | RETURN; | |
| 40c94d11 | 126 | } |
| 78f9721b | 127 | } |
| 54310121 | 128 | gimme = GIMME_V; |
| 129 | if (gimme == G_ARRAY) { | |
| 981b7185 | 130 | RETURNOP(Perl_do_kv(aTHX)); |
| 85e6fe83 | 131 | } |
| 54310121 | 132 | else if (gimme == G_SCALAR) { |
| 85fbaab2 | 133 | SV* const sv = Perl_hv_scalar(aTHX_ MUTABLE_HV(TARG)); |
| 85e6fe83 | 134 | SETs(sv); |
| 85e6fe83 | 135 | } |
| 54310121 | 136 | RETURN; |
| 93a17b20 LW |
137 | } |
| 138 | ||
| 79072805 LW |
139 | /* Translations. */ |
| 140 | ||
| 4bdf8368 | 141 | static const char S_no_symref_sv[] = |
| def89bff NC |
142 | "Can't use string (\"%" SVf32 "\"%s) as %s ref while \"strict refs\" in use"; |
| 143 | ||
| 79072805 LW |
144 | PP(pp_rv2gv) |
| 145 | { | |
| 97aff369 | 146 | dVAR; dSP; dTOPss; |
| 8ec5e241 | 147 | |
| f64c9ac5 | 148 | if (!isGV(sv) || SvFAKE(sv)) SvGETMAGIC(sv); |
| ed6116ce | 149 | if (SvROK(sv)) { |
| a0d0e21e | 150 | wasref: |
| 93d7320b DM |
151 | if (SvAMAGIC(sv)) { |
| 152 | sv = amagic_deref_call(sv, to_gv_amg); | |
| 153 | SPAGAIN; | |
| 154 | } | |
| ed6116ce | 155 | sv = SvRV(sv); |
| b1dadf13 | 156 | if (SvTYPE(sv) == SVt_PVIO) { |
| 159b6efe | 157 | GV * const gv = MUTABLE_GV(sv_newmortal()); |
| b1dadf13 | 158 | gv_init(gv, 0, "", 0, 0); |
| a45c7426 | 159 | GvIOp(gv) = MUTABLE_IO(sv); |
| b37c2d43 | 160 | SvREFCNT_inc_void_NN(sv); |
| ad64d0ec | 161 | sv = MUTABLE_SV(gv); |
| ef54e1a4 | 162 | } |
| 6e592b3a | 163 | else if (!isGV_with_GP(sv)) |
| cea2e8a9 | 164 | DIE(aTHX_ "Not a GLOB reference"); |
| 79072805 LW |
165 | } |
| 166 | else { | |
| 6e592b3a | 167 | if (!isGV_with_GP(sv)) { |
| afd1915d | 168 | if (!SvOK(sv) && sv != &PL_sv_undef) { |
| b13b2135 | 169 | /* If this is a 'my' scalar and flag is set then vivify |
| 853846ea | 170 | * NI-S 1999/05/07 |
| b13b2135 | 171 | */ |
| ac53db4c | 172 | if (SvREADONLY(sv)) |
| 6ad8f254 | 173 | Perl_croak_no_modify(aTHX); |
| 1d8d4d2a | 174 | if (PL_op->op_private & OPpDEREF) { |
| 2c8ac474 GS |
175 | GV *gv; |
| 176 | if (cUNOP->op_targ) { | |
| 177 | STRLEN len; | |
| 0bd48802 AL |
178 | SV * const namesv = PAD_SV(cUNOP->op_targ); |
| 179 | const char * const name = SvPV(namesv, len); | |
| 159b6efe | 180 | gv = MUTABLE_GV(newSV(0)); |
| 2c8ac474 GS |
181 | gv_init(gv, CopSTASH(PL_curcop), name, len, 0); |
| 182 | } | |
| 183 | else { | |
| 0bd48802 | 184 | const char * const name = CopSTASHPV(PL_curcop); |
| 2c8ac474 | 185 | gv = newGVgen(name); |
| 1d8d4d2a | 186 | } |
| 43230e26 | 187 | prepare_SV_for_RV(sv); |
| ad64d0ec | 188 | SvRV_set(sv, MUTABLE_SV(gv)); |
| 853846ea | 189 | SvROK_on(sv); |
| 1d8d4d2a | 190 | SvSETMAGIC(sv); |
| 853846ea | 191 | goto wasref; |
| 2c8ac474 | 192 | } |
| 533c011a NIS |
193 | if (PL_op->op_flags & OPf_REF || |
| 194 | PL_op->op_private & HINT_STRICT_REFS) | |
| cea2e8a9 | 195 | DIE(aTHX_ PL_no_usym, "a symbol"); |
| 599cee73 | 196 | if (ckWARN(WARN_UNINITIALIZED)) |
| 29489e7c | 197 | report_uninit(sv); |
| a0d0e21e LW |
198 | RETSETUNDEF; |
| 199 | } | |
| 35cd451c GS |
200 | if ((PL_op->op_flags & OPf_SPECIAL) && |
| 201 | !(PL_op->op_flags & OPf_MOD)) | |
| 202 | { | |
| ad64d0ec | 203 | SV * const temp = MUTABLE_SV(gv_fetchsv(sv, 0, SVt_PVGV)); |
| 7a5fd60d NC |
204 | if (!temp |
| 205 | && (!is_gv_magical_sv(sv,0) | |
| ad64d0ec NC |
206 | || !(sv = MUTABLE_SV(gv_fetchsv(sv, GV_ADD, |
| 207 | SVt_PVGV))))) { | |
| 35cd451c | 208 | RETSETUNDEF; |
| c9d5ac95 | 209 | } |
| 7a5fd60d | 210 | sv = temp; |
| 35cd451c GS |
211 | } |
| 212 | else { | |
| 213 | if (PL_op->op_private & HINT_STRICT_REFS) | |
| 10b53e54 | 214 | DIE(aTHX_ S_no_symref_sv, sv, (SvPOK(sv) && SvCUR(sv)>32 ? "..." : ""), "a symbol"); |
| e26df76a NC |
215 | if ((PL_op->op_private & (OPpLVAL_INTRO|OPpDONT_INIT_GV)) |
| 216 | == OPpDONT_INIT_GV) { | |
| 217 | /* We are the target of a coderef assignment. Return | |
| 218 | the scalar unchanged, and let pp_sasssign deal with | |
| 219 | things. */ | |
| 220 | RETURN; | |
| 221 | } | |
| ad64d0ec | 222 | sv = MUTABLE_SV(gv_fetchsv(sv, GV_ADD, SVt_PVGV)); |
| 35cd451c | 223 | } |
| 2acc3314 FC |
224 | /* FAKE globs in the symbol table cause weird bugs (#77810) */ |
| 225 | if (sv) SvFAKE_off(sv); | |
| 93a17b20 | 226 | } |
| 79072805 | 227 | } |
| 2acc3314 FC |
228 | if (sv && SvFAKE(sv)) { |
| 229 | SV *newsv = sv_newmortal(); | |
| 5cf4b255 | 230 | sv_setsv_flags(newsv, sv, 0); |
| 2acc3314 | 231 | SvFAKE_off(newsv); |
| d8906c05 | 232 | sv = newsv; |
| 2acc3314 | 233 | } |
| d8906c05 FC |
234 | if (PL_op->op_private & OPpLVAL_INTRO) |
| 235 | save_gp(MUTABLE_GV(sv), !(PL_op->op_flags & OPf_SPECIAL)); | |
| 236 | SETs(sv); | |
| 79072805 LW |
237 | RETURN; |
| 238 | } | |
| 239 | ||
| dc3c76f8 NC |
240 | /* Helper function for pp_rv2sv and pp_rv2av */ |
| 241 | GV * | |
| fe9845cc RB |
242 | Perl_softref2xv(pTHX_ SV *const sv, const char *const what, |
| 243 | const svtype type, SV ***spp) | |
| dc3c76f8 NC |
244 | { |
| 245 | dVAR; | |
| 246 | GV *gv; | |
| 247 | ||
| 7918f24d NC |
248 | PERL_ARGS_ASSERT_SOFTREF2XV; |
| 249 | ||
| dc3c76f8 NC |
250 | if (PL_op->op_private & HINT_STRICT_REFS) { |
| 251 | if (SvOK(sv)) | |
| 10b53e54 | 252 | Perl_die(aTHX_ S_no_symref_sv, sv, (SvPOK(sv) && SvCUR(sv)>32 ? "..." : ""), what); |
| dc3c76f8 NC |
253 | else |
| 254 | Perl_die(aTHX_ PL_no_usym, what); | |
| 255 | } | |
| 256 | if (!SvOK(sv)) { | |
| fd1d9b5c FC |
257 | if ( |
| 258 | PL_op->op_flags & OPf_REF && | |
| 259 | PL_op->op_next->op_type != OP_BOOLKEYS | |
| 260 | ) | |
| dc3c76f8 NC |
261 | Perl_die(aTHX_ PL_no_usym, what); |
| 262 | if (ckWARN(WARN_UNINITIALIZED)) | |
| 263 | report_uninit(sv); | |
| 264 | if (type != SVt_PV && GIMME_V == G_ARRAY) { | |
| 265 | (*spp)--; | |
| 266 | return NULL; | |
| 267 | } | |
| 268 | **spp = &PL_sv_undef; | |
| 269 | return NULL; | |
| 270 | } | |
| 271 | if ((PL_op->op_flags & OPf_SPECIAL) && | |
| 272 | !(PL_op->op_flags & OPf_MOD)) | |
| 273 | { | |
| 81e3fc25 | 274 | gv = gv_fetchsv(sv, 0, type); |
| dc3c76f8 NC |
275 | if (!gv |
| 276 | && (!is_gv_magical_sv(sv,0) | |
| 81e3fc25 | 277 | || !(gv = gv_fetchsv(sv, GV_ADD, type)))) |
| dc3c76f8 NC |
278 | { |
| 279 | **spp = &PL_sv_undef; | |
| 280 | return NULL; | |
| 281 | } | |
| 282 | } | |
| 283 | else { | |
| 81e3fc25 | 284 | gv = gv_fetchsv(sv, GV_ADD, type); |
| dc3c76f8 NC |
285 | } |
| 286 | return gv; | |
| 287 | } | |
| 288 | ||
| 79072805 LW |
289 | PP(pp_rv2sv) |
| 290 | { | |
| 97aff369 | 291 | dVAR; dSP; dTOPss; |
| c445ea15 | 292 | GV *gv = NULL; |
| 79072805 | 293 | |
| 0824d667 DM |
294 | if (!(PL_op->op_private & OPpDEREFed)) |
| 295 | SvGETMAGIC(sv); | |
| ed6116ce | 296 | if (SvROK(sv)) { |
| 93d7320b DM |
297 | if (SvAMAGIC(sv)) { |
| 298 | sv = amagic_deref_call(sv, to_sv_amg); | |
| 299 | SPAGAIN; | |
| 300 | } | |
| f5284f61 | 301 | |
| ed6116ce | 302 | sv = SvRV(sv); |
| 79072805 LW |
303 | switch (SvTYPE(sv)) { |
| 304 | case SVt_PVAV: | |
| 305 | case SVt_PVHV: | |
| 306 | case SVt_PVCV: | |
| cbae9b9f YST |
307 | case SVt_PVFM: |
| 308 | case SVt_PVIO: | |
| cea2e8a9 | 309 | DIE(aTHX_ "Not a SCALAR reference"); |
| 42d0e0b7 | 310 | default: NOOP; |
| 79072805 LW |
311 | } |
| 312 | } | |
| 313 | else { | |
| 159b6efe | 314 | gv = MUTABLE_GV(sv); |
| 748a9306 | 315 | |
| 6e592b3a | 316 | if (!isGV_with_GP(gv)) { |
| dc3c76f8 NC |
317 | gv = Perl_softref2xv(aTHX_ sv, "a SCALAR", SVt_PV, &sp); |
| 318 | if (!gv) | |
| 319 | RETURN; | |
| 463ee0b2 | 320 | } |
| 29c711a3 | 321 | sv = GvSVn(gv); |
| a0d0e21e | 322 | } |
| 533c011a | 323 | if (PL_op->op_flags & OPf_MOD) { |
| 82d03984 RGS |
324 | if (PL_op->op_private & OPpLVAL_INTRO) { |
| 325 | if (cUNOP->op_first->op_type == OP_NULL) | |
| 159b6efe | 326 | sv = save_scalar(MUTABLE_GV(TOPs)); |
| 82d03984 RGS |
327 | else if (gv) |
| 328 | sv = save_scalar(gv); | |
| 329 | else | |
| f1f66076 | 330 | Perl_croak(aTHX_ "%s", PL_no_localize_ref); |
| 82d03984 | 331 | } |
| 533c011a NIS |
332 | else if (PL_op->op_private & OPpDEREF) |
| 333 | vivify_ref(sv, PL_op->op_private & OPpDEREF); | |
| 79072805 | 334 | } |
| a0d0e21e | 335 | SETs(sv); |
| 79072805 LW |
336 | RETURN; |
| 337 | } | |
| 338 | ||
| 339 | PP(pp_av2arylen) | |
| 340 | { | |
| 97aff369 | 341 | dVAR; dSP; |
| 502c6561 | 342 | AV * const av = MUTABLE_AV(TOPs); |
| 02d85cc3 EB |
343 | const I32 lvalue = PL_op->op_flags & OPf_MOD || LVRET; |
| 344 | if (lvalue) { | |
| 345 | SV ** const sv = Perl_av_arylen_p(aTHX_ MUTABLE_AV(av)); | |
| 346 | if (!*sv) { | |
| 347 | *sv = newSV_type(SVt_PVMG); | |
| 348 | sv_magic(*sv, MUTABLE_SV(av), PERL_MAGIC_arylen, NULL, 0); | |
| 349 | } | |
| 350 | SETs(*sv); | |
| 351 | } else { | |
| 352 | SETs(sv_2mortal(newSViv( | |
| 353 | AvFILL(MUTABLE_AV(av)) + CopARYBASE_get(PL_curcop) | |
| 354 | ))); | |
| 79072805 | 355 | } |
| 79072805 LW |
356 | RETURN; |
| 357 | } | |
| 358 | ||
| a0d0e21e LW |
359 | PP(pp_pos) |
| 360 | { | |
| 2154eca7 | 361 | dVAR; dSP; dPOPss; |
| 8ec5e241 | 362 | |
| 78f9721b | 363 | if (PL_op->op_flags & OPf_MOD || LVRET) { |
| 16eb5365 FC |
364 | SV * const ret = sv_2mortal(newSV_type(SVt_PVLV)); /* Not TARG RT#67838 */ |
| 365 | sv_magic(ret, NULL, PERL_MAGIC_pos, NULL, 0); | |
| 366 | LvTYPE(ret) = '.'; | |
| 367 | LvTARG(ret) = SvREFCNT_inc_simple(sv); | |
| 2154eca7 | 368 | PUSHs(ret); /* no SvSETMAGIC */ |
| a0d0e21e LW |
369 | RETURN; |
| 370 | } | |
| 371 | else { | |
| a0d0e21e | 372 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) { |
| 1b6737cc | 373 | const MAGIC * const mg = mg_find(sv, PERL_MAGIC_regex_global); |
| 565764a8 | 374 | if (mg && mg->mg_len >= 0) { |
| 2154eca7 | 375 | dTARGET; |
| a0ed51b3 | 376 | I32 i = mg->mg_len; |
| 7e2040f0 | 377 | if (DO_UTF8(sv)) |
| a0ed51b3 | 378 | sv_pos_b2u(sv, &i); |
| fc15ae8f | 379 | PUSHi(i + CopARYBASE_get(PL_curcop)); |
| a0d0e21e LW |
380 | RETURN; |
| 381 | } | |
| 382 | } | |
| 383 | RETPUSHUNDEF; | |
| 384 | } | |
| 385 | } | |
| 386 | ||
| 79072805 LW |
387 | PP(pp_rv2cv) |
| 388 | { | |
| 97aff369 | 389 | dVAR; dSP; |
| 79072805 | 390 | GV *gv; |
| 1eced8f8 | 391 | HV *stash_unused; |
| c445ea15 AL |
392 | const I32 flags = (PL_op->op_flags & OPf_SPECIAL) |
| 393 | ? 0 | |
| 394 | : ((PL_op->op_private & (OPpLVAL_INTRO|OPpMAY_RETURN_CONSTANT)) == OPpMAY_RETURN_CONSTANT) | |
| 395 | ? GV_ADD|GV_NOEXPAND | |
| 396 | : GV_ADD; | |
| 4633a7c4 LW |
397 | /* We usually try to add a non-existent subroutine in case of AUTOLOAD. */ |
| 398 | /* (But not in defined().) */ | |
| e26df76a | 399 | |
| 1eced8f8 | 400 | CV *cv = sv_2cv(TOPs, &stash_unused, &gv, flags); |
| 07055b4c CS |
401 | if (cv) { |
| 402 | if (CvCLONE(cv)) | |
| ad64d0ec | 403 | cv = MUTABLE_CV(sv_2mortal(MUTABLE_SV(cv_clone(cv)))); |
| d32f2495 SC |
404 | if ((PL_op->op_private & OPpLVAL_INTRO)) { |
| 405 | if (gv && GvCV(gv) == cv && (gv = gv_autoload4(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), FALSE))) | |
| 406 | cv = GvCV(gv); | |
| 407 | if (!CvLVALUE(cv)) | |
| 408 | DIE(aTHX_ "Can't modify non-lvalue subroutine call"); | |
| 409 | } | |
| 07055b4c | 410 | } |
| e26df76a | 411 | else if ((flags == (GV_ADD|GV_NOEXPAND)) && gv && SvROK(gv)) { |
| ea726b52 | 412 | cv = MUTABLE_CV(gv); |
| e26df76a | 413 | } |
| 07055b4c | 414 | else |
| ea726b52 | 415 | cv = MUTABLE_CV(&PL_sv_undef); |
| ad64d0ec | 416 | SETs(MUTABLE_SV(cv)); |
| 79072805 LW |
417 | RETURN; |
| 418 | } | |
| 419 | ||
| c07a80fd | 420 | PP(pp_prototype) |
| 421 | { | |
| 97aff369 | 422 | dVAR; dSP; |
| c07a80fd | 423 | CV *cv; |
| 424 | HV *stash; | |
| 425 | GV *gv; | |
| fabdb6c0 | 426 | SV *ret = &PL_sv_undef; |
| c07a80fd | 427 | |
| b6c543e3 | 428 | if (SvPOK(TOPs) && SvCUR(TOPs) >= 7) { |
| e3f73d4e | 429 | const char * s = SvPVX_const(TOPs); |
| b6c543e3 | 430 | if (strnEQ(s, "CORE::", 6)) { |
| 5458a98a | 431 | const int code = keyword(s + 6, SvCUR(TOPs) - 6, 1); |
| b6c543e3 IZ |
432 | if (code < 0) { /* Overridable. */ |
| 433 | #define MAX_ARGS_OP ((sizeof(I32) - 1) * 2) | |
| 59b085e1 | 434 | int i = 0, n = 0, seen_question = 0, defgv = 0; |
| b6c543e3 IZ |
435 | I32 oa; |
| 436 | char str[ MAX_ARGS_OP * 2 + 2 ]; /* One ';', one '\0' */ | |
| 437 | ||
| bdf1bb36 | 438 | if (code == -KEY_chop || code == -KEY_chomp |
| f23102e2 | 439 | || code == -KEY_exec || code == -KEY_system) |
| 77bc9082 | 440 | goto set; |
| d116c547 | 441 | if (code == -KEY_mkdir) { |
| 84bafc02 | 442 | ret = newSVpvs_flags("_;$", SVs_TEMP); |
| d116c547 RGS |
443 | goto set; |
| 444 | } | |
| 7c8178a1 | 445 | if (code == -KEY_keys || code == -KEY_values || code == -KEY_each) { |
| cba5a3b0 DG |
446 | ret = newSVpvs_flags("+", SVs_TEMP); |
| 447 | goto set; | |
| 448 | } | |
| 449 | if (code == -KEY_push || code == -KEY_unshift) { | |
| 450 | ret = newSVpvs_flags("+@", SVs_TEMP); | |
| 451 | goto set; | |
| 452 | } | |
| 453 | if (code == -KEY_pop || code == -KEY_shift) { | |
| 454 | ret = newSVpvs_flags(";+", SVs_TEMP); | |
| 455 | goto set; | |
| 456 | } | |
| 457 | if (code == -KEY_splice) { | |
| 458 | ret = newSVpvs_flags("+;$$@", SVs_TEMP); | |
| 1db4d195 FC |
459 | goto set; |
| 460 | } | |
| 461 | if (code == -KEY_tied || code == -KEY_untie) { | |
| 462 | ret = newSVpvs_flags("\\[$@%*]", SVs_TEMP); | |
| 463 | goto set; | |
| 464 | } | |
| 465 | if (code == -KEY_tie) { | |
| 466 | ret = newSVpvs_flags("\\[$@%*]$@", SVs_TEMP); | |
| 7c8178a1 | 467 | goto set; |
| 7c4c6e7c FC |
468 | } |
| 469 | if (code == -KEY___FILE__ || code == -KEY___LINE__ | |
| 470 | || code == -KEY___PACKAGE__) { | |
| 471 | ret = newSVpvs_flags("", SVs_TEMP); | |
| 472 | goto set; | |
| 7c8178a1 | 473 | } |
| e3f73d4e RGS |
474 | if (code == -KEY_readpipe) { |
| 475 | s = "CORE::backtick"; | |
| 476 | } | |
| b6c543e3 | 477 | while (i < MAXO) { /* The slow way. */ |
| 22c35a8c GS |
478 | if (strEQ(s + 6, PL_op_name[i]) |
| 479 | || strEQ(s + 6, PL_op_desc[i])) | |
| 480 | { | |
| b6c543e3 | 481 | goto found; |
| 22c35a8c | 482 | } |
| b6c543e3 IZ |
483 | i++; |
| 484 | } | |
| 485 | goto nonesuch; /* Should not happen... */ | |
| 486 | found: | |
| 59b085e1 | 487 | defgv = PL_opargs[i] & OA_DEFGV; |
| 22c35a8c | 488 | oa = PL_opargs[i] >> OASHIFT; |
| b6c543e3 | 489 | while (oa) { |
| 59b085e1 | 490 | if (oa & OA_OPTIONAL && !seen_question && !defgv) { |
| b6c543e3 IZ |
491 | seen_question = 1; |
| 492 | str[n++] = ';'; | |
| ef54e1a4 | 493 | } |
| b13b2135 | 494 | if ((oa & (OA_OPTIONAL - 1)) >= OA_AVREF |
| 6e97e420 SC |
495 | && (oa & (OA_OPTIONAL - 1)) <= OA_SCALARREF |
| 496 | /* But globs are already references (kinda) */ | |
| 497 | && (oa & (OA_OPTIONAL - 1)) != OA_FILEREF | |
| 498 | ) { | |
| b6c543e3 IZ |
499 | str[n++] = '\\'; |
| 500 | } | |
| b6c543e3 IZ |
501 | str[n++] = ("?$@@%&*$")[oa & (OA_OPTIONAL - 1)]; |
| 502 | oa = oa >> 4; | |
| 503 | } | |
| 59b085e1 RGS |
504 | if (defgv && str[n - 1] == '$') |
| 505 | str[n - 1] = '_'; | |
| b6c543e3 | 506 | str[n++] = '\0'; |
| 59cd0e26 | 507 | ret = newSVpvn_flags(str, n - 1, SVs_TEMP); |
| ef54e1a4 JH |
508 | } |
| 509 | else if (code) /* Non-Overridable */ | |
| b6c543e3 IZ |
510 | goto set; |
| 511 | else { /* None such */ | |
| 512 | nonesuch: | |
| d470f89e | 513 | DIE(aTHX_ "Can't find an opnumber for \"%s\"", s+6); |
| b6c543e3 IZ |
514 | } |
| 515 | } | |
| 516 | } | |
| f2c0649b | 517 | cv = sv_2cv(TOPs, &stash, &gv, 0); |
| 5f05dabc | 518 | if (cv && SvPOK(cv)) |
| 59cd0e26 | 519 | ret = newSVpvn_flags(SvPVX_const(cv), SvCUR(cv), SVs_TEMP); |
| b6c543e3 | 520 | set: |
| c07a80fd | 521 | SETs(ret); |
| 522 | RETURN; | |
| 523 | } | |
| 524 | ||
| a0d0e21e LW |
525 | PP(pp_anoncode) |
| 526 | { | |
| 97aff369 | 527 | dVAR; dSP; |
| ea726b52 | 528 | CV *cv = MUTABLE_CV(PAD_SV(PL_op->op_targ)); |
| a5f75d66 | 529 | if (CvCLONE(cv)) |
| ad64d0ec | 530 | cv = MUTABLE_CV(sv_2mortal(MUTABLE_SV(cv_clone(cv)))); |
| 5f05dabc | 531 | EXTEND(SP,1); |
| ad64d0ec | 532 | PUSHs(MUTABLE_SV(cv)); |
| a0d0e21e LW |
533 | RETURN; |
| 534 | } | |
| 535 | ||
| 536 | PP(pp_srefgen) | |
| 79072805 | 537 | { |
| 97aff369 | 538 | dVAR; dSP; |
| 71be2cbc | 539 | *SP = refto(*SP); |
| 79072805 | 540 | RETURN; |
| 8ec5e241 | 541 | } |
| a0d0e21e LW |
542 | |
| 543 | PP(pp_refgen) | |
| 544 | { | |
| 97aff369 | 545 | dVAR; dSP; dMARK; |
| a0d0e21e | 546 | if (GIMME != G_ARRAY) { |
| 5f0b1d4e GS |
547 | if (++MARK <= SP) |
| 548 | *MARK = *SP; | |
| 549 | else | |
| 3280af22 | 550 | *MARK = &PL_sv_undef; |
| 5f0b1d4e GS |
551 | *MARK = refto(*MARK); |
| 552 | SP = MARK; | |
| 553 | RETURN; | |
| a0d0e21e | 554 | } |
| bbce6d69 | 555 | EXTEND_MORTAL(SP - MARK); |
| 71be2cbc | 556 | while (++MARK <= SP) |
| 557 | *MARK = refto(*MARK); | |
| a0d0e21e | 558 | RETURN; |
| 79072805 LW |
559 | } |
| 560 | ||
| 76e3520e | 561 | STATIC SV* |
| cea2e8a9 | 562 | S_refto(pTHX_ SV *sv) |
| 71be2cbc | 563 | { |
| 97aff369 | 564 | dVAR; |
| 71be2cbc | 565 | SV* rv; |
| 566 | ||
| 7918f24d NC |
567 | PERL_ARGS_ASSERT_REFTO; |
| 568 | ||
| 71be2cbc | 569 | if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y') { |
| 570 | if (LvTARGLEN(sv)) | |
| 68dc0745 | 571 | vivify_defelem(sv); |
| 572 | if (!(sv = LvTARG(sv))) | |
| 3280af22 | 573 | sv = &PL_sv_undef; |
| 0dd88869 | 574 | else |
| b37c2d43 | 575 | SvREFCNT_inc_void_NN(sv); |
| 71be2cbc | 576 | } |
| d8b46c1b | 577 | else if (SvTYPE(sv) == SVt_PVAV) { |
| 502c6561 NC |
578 | if (!AvREAL((const AV *)sv) && AvREIFY((const AV *)sv)) |
| 579 | av_reify(MUTABLE_AV(sv)); | |
| d8b46c1b | 580 | SvTEMP_off(sv); |
| b37c2d43 | 581 | SvREFCNT_inc_void_NN(sv); |
| d8b46c1b | 582 | } |
| f2933f5f DM |
583 | else if (SvPADTMP(sv) && !IS_PADGV(sv)) |
| 584 | sv = newSVsv(sv); | |
| 71be2cbc | 585 | else { |
| 586 | SvTEMP_off(sv); | |
| b37c2d43 | 587 | SvREFCNT_inc_void_NN(sv); |
| 71be2cbc | 588 | } |
| 589 | rv = sv_newmortal(); | |
| 4df7f6af | 590 | sv_upgrade(rv, SVt_IV); |
| b162af07 | 591 | SvRV_set(rv, sv); |
| 71be2cbc | 592 | SvROK_on(rv); |
| 593 | return rv; | |
| 594 | } | |
| 595 | ||
| 79072805 LW |
596 | PP(pp_ref) |
| 597 | { | |
| 97aff369 | 598 | dVAR; dSP; dTARGET; |
| e1ec3a88 | 599 | const char *pv; |
| 1b6737cc | 600 | SV * const sv = POPs; |
| f12c7020 | 601 | |
| 5b295bef RD |
602 | if (sv) |
| 603 | SvGETMAGIC(sv); | |
| f12c7020 | 604 | |
| a0d0e21e | 605 | if (!sv || !SvROK(sv)) |
| 4633a7c4 | 606 | RETPUSHNO; |
| 79072805 | 607 | |
| cba0b539 FR |
608 | pv = sv_reftype(SvRV(sv),TRUE); |
| 609 | PUSHp(pv, strlen(pv)); | |
| 79072805 LW |
610 | RETURN; |
| 611 | } | |
| 612 | ||
| 613 | PP(pp_bless) | |
| 614 | { | |
| 97aff369 | 615 | dVAR; dSP; |
| 463ee0b2 | 616 | HV *stash; |
| 79072805 | 617 | |
| 463ee0b2 | 618 | if (MAXARG == 1) |
| 11faa288 | 619 | stash = CopSTASH(PL_curcop); |
| 7b8d334a | 620 | else { |
| 1b6737cc | 621 | SV * const ssv = POPs; |
| 7b8d334a | 622 | STRLEN len; |
| e1ec3a88 | 623 | const char *ptr; |
| 81689caa | 624 | |
| 016a42f3 | 625 | if (ssv && !SvGMAGICAL(ssv) && !SvAMAGIC(ssv) && SvROK(ssv)) |
| 81689caa | 626 | Perl_croak(aTHX_ "Attempt to bless into a reference"); |
| 5c144d81 | 627 | ptr = SvPV_const(ssv,len); |
| a2a5de95 NC |
628 | if (len == 0) |
| 629 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), | |
| 630 | "Explicit blessing to '' (assuming package main)"); | |
| da51bb9b | 631 | stash = gv_stashpvn(ptr, len, GV_ADD); |
| 7b8d334a | 632 | } |
| a0d0e21e | 633 | |
| 5d3fdfeb | 634 | (void)sv_bless(TOPs, stash); |
| 79072805 LW |
635 | RETURN; |
| 636 | } | |
| 637 | ||
| fb73857a | 638 | PP(pp_gelem) |
| 639 | { | |
| 97aff369 | 640 | dVAR; dSP; |
| b13b2135 | 641 | |
| 1b6737cc AL |
642 | SV *sv = POPs; |
| 643 | const char * const elem = SvPV_nolen_const(sv); | |
| 159b6efe | 644 | GV * const gv = MUTABLE_GV(POPs); |
| c445ea15 | 645 | SV * tmpRef = NULL; |
| 1b6737cc | 646 | |
| c445ea15 | 647 | sv = NULL; |
| c4ba80c3 NC |
648 | if (elem) { |
| 649 | /* elem will always be NUL terminated. */ | |
| 1b6737cc | 650 | const char * const second_letter = elem + 1; |
| c4ba80c3 NC |
651 | switch (*elem) { |
| 652 | case 'A': | |
| 1b6737cc | 653 | if (strEQ(second_letter, "RRAY")) |
| ad64d0ec | 654 | tmpRef = MUTABLE_SV(GvAV(gv)); |
| c4ba80c3 NC |
655 | break; |
| 656 | case 'C': | |
| 1b6737cc | 657 | if (strEQ(second_letter, "ODE")) |
| ad64d0ec | 658 | tmpRef = MUTABLE_SV(GvCVu(gv)); |
| c4ba80c3 NC |
659 | break; |
| 660 | case 'F': | |
| 1b6737cc | 661 | if (strEQ(second_letter, "ILEHANDLE")) { |
| c4ba80c3 NC |
662 | /* finally deprecated in 5.8.0 */ |
| 663 | deprecate("*glob{FILEHANDLE}"); | |
| ad64d0ec | 664 | tmpRef = MUTABLE_SV(GvIOp(gv)); |
| c4ba80c3 NC |
665 | } |
| 666 | else | |
| 1b6737cc | 667 | if (strEQ(second_letter, "ORMAT")) |
| ad64d0ec | 668 | tmpRef = MUTABLE_SV(GvFORM(gv)); |
| c4ba80c3 NC |
669 | break; |
| 670 | case 'G': | |
| 1b6737cc | 671 | if (strEQ(second_letter, "LOB")) |
| ad64d0ec | 672 | tmpRef = MUTABLE_SV(gv); |
| c4ba80c3 NC |
673 | break; |
| 674 | case 'H': | |
| 1b6737cc | 675 | if (strEQ(second_letter, "ASH")) |
| ad64d0ec | 676 | tmpRef = MUTABLE_SV(GvHV(gv)); |
| c4ba80c3 NC |
677 | break; |
| 678 | case 'I': | |
| 1b6737cc | 679 | if (*second_letter == 'O' && !elem[2]) |
| ad64d0ec | 680 | tmpRef = MUTABLE_SV(GvIOp(gv)); |
| c4ba80c3 NC |
681 | break; |
| 682 | case 'N': | |
| 1b6737cc | 683 | if (strEQ(second_letter, "AME")) |
| a663657d | 684 | sv = newSVhek(GvNAME_HEK(gv)); |
| c4ba80c3 NC |
685 | break; |
| 686 | case 'P': | |
| 1b6737cc | 687 | if (strEQ(second_letter, "ACKAGE")) { |
| 7fa3a4ab NC |
688 | const HV * const stash = GvSTASH(gv); |
| 689 | const HEK * const hek = stash ? HvNAME_HEK(stash) : NULL; | |
| 396482e1 | 690 | sv = hek ? newSVhek(hek) : newSVpvs("__ANON__"); |
| c4ba80c3 NC |
691 | } |
| 692 | break; | |
| 693 | case 'S': | |
| 1b6737cc | 694 | if (strEQ(second_letter, "CALAR")) |
| f9d52e31 | 695 | tmpRef = GvSVn(gv); |
| c4ba80c3 | 696 | break; |
| 39b99f21 | 697 | } |
| fb73857a | 698 | } |
| 76e3520e GS |
699 | if (tmpRef) |
| 700 | sv = newRV(tmpRef); | |
| fb73857a | 701 | if (sv) |
| 702 | sv_2mortal(sv); | |
| 703 | else | |
| 3280af22 | 704 | sv = &PL_sv_undef; |
| fb73857a | 705 | XPUSHs(sv); |
| 706 | RETURN; | |
| 707 | } | |
| 708 | ||
| a0d0e21e | 709 | /* Pattern matching */ |
| 79072805 | 710 | |
| a0d0e21e | 711 | PP(pp_study) |
| 79072805 | 712 | { |
| 97aff369 | 713 | dVAR; dSP; dPOPss; |
| a0d0e21e | 714 | register unsigned char *s; |
| 72de20cd | 715 | char *sfirst_raw; |
| a0d0e21e | 716 | STRLEN len; |
| 4185c919 | 717 | MAGIC *mg = SvMAGICAL(sv) ? mg_find(sv, PERL_MAGIC_study) : NULL; |
| 72de20cd NC |
718 | U8 quanta; |
| 719 | STRLEN size; | |
| 4185c919 NC |
720 | |
| 721 | if (mg && SvSCREAM(sv)) | |
| 722 | RETPUSHYES; | |
| a0d0e21e | 723 | |
| a4f4e906 | 724 | s = (unsigned char*)(SvPV(sv, len)); |
| bc9a5256 | 725 | if (len == 0 || len > I32_MAX || !SvPOK(sv) || SvUTF8(sv) || SvVALID(sv)) { |
| a4f4e906 NC |
726 | /* No point in studying a zero length string, and not safe to study |
| 727 | anything that doesn't appear to be a simple scalar (and hence might | |
| 728 | change between now and when the regexp engine runs without our set | |
| bd473224 | 729 | magic ever running) such as a reference to an object with overloaded |
| bc9a5256 NC |
730 | stringification. Also refuse to study an FBM scalar, as this gives |
| 731 | more flexibility in SV flag usage. No real-world code would ever | |
| 732 | end up studying an FBM scalar, so this isn't a real pessimisation. | |
| 72de20cd NC |
733 | Endemic use of I32 in Perl_screaminstr makes it hard to safely push |
| 734 | the study length limit from I32_MAX to U32_MAX - 1. | |
| bc9a5256 | 735 | */ |
| a4f4e906 NC |
736 | RETPUSHNO; |
| 737 | } | |
| 738 | ||
| 72de20cd NC |
739 | if (len < 0xFF) { |
| 740 | quanta = 1; | |
| 741 | } else if (len < 0xFFFF) { | |
| 742 | quanta = 2; | |
| 743 | } else | |
| 744 | quanta = 4; | |
| a0d0e21e | 745 | |
| 72de20cd NC |
746 | size = (256 + len) * quanta; |
| 747 | sfirst_raw = (char *)safemalloc(size); | |
| 748 | ||
| 749 | if (!sfirst_raw) | |
| cea2e8a9 | 750 | DIE(aTHX_ "do_study: out of memory"); |
| a0d0e21e | 751 | |
| 4185c919 NC |
752 | SvSCREAM_on(sv); |
| 753 | if (!mg) | |
| 754 | mg = sv_magicext(sv, NULL, PERL_MAGIC_study, &PL_vtbl_regexp, NULL, 0); | |
| 72de20cd NC |
755 | mg->mg_ptr = sfirst_raw; |
| 756 | mg->mg_len = size; | |
| 757 | mg->mg_private = quanta; | |
| 758 | ||
| 759 | memset(sfirst_raw, ~0, 256 * quanta); | |
| 760 | ||
| 761 | /* The assumption here is that most studied strings are fairly short, hence | |
| 762 | the pain of the extra code is worth it, given the memory savings. | |
| 763 | 80 character string, 336 bytes as U8, down from 1344 as U32 | |
| 764 | 800 character string, 2112 bytes as U16, down from 4224 as U32 | |
| 765 | */ | |
| 766 | ||
| 767 | if (quanta == 1) { | |
| 768 | U8 *const sfirst = (U8 *)sfirst_raw; | |
| 769 | U8 *const snext = sfirst + 256; | |
| 770 | while (len-- > 0) { | |
| 771 | const U8 ch = s[len]; | |
| 772 | snext[len] = sfirst[ch]; | |
| 773 | sfirst[ch] = len; | |
| 774 | } | |
| 775 | } else if (quanta == 2) { | |
| 776 | U16 *const sfirst = (U16 *)sfirst_raw; | |
| 777 | U16 *const snext = sfirst + 256; | |
| 778 | while (len-- > 0) { | |
| 779 | const U8 ch = s[len]; | |
| 780 | snext[len] = sfirst[ch]; | |
| 781 | sfirst[ch] = len; | |
| 782 | } | |
| 783 | } else { | |
| 784 | U32 *const sfirst = (U32 *)sfirst_raw; | |
| 785 | U32 *const snext = sfirst + 256; | |
| 786 | while (len-- > 0) { | |
| 787 | const U8 ch = s[len]; | |
| 788 | snext[len] = sfirst[ch]; | |
| 789 | sfirst[ch] = len; | |
| 790 | } | |
| 79072805 LW |
791 | } |
| 792 | ||
| 1e422769 | 793 | RETPUSHYES; |
| 79072805 LW |
794 | } |
| 795 | ||
| a0d0e21e | 796 | PP(pp_trans) |
| 79072805 | 797 | { |
| 97aff369 | 798 | dVAR; dSP; dTARG; |
| a0d0e21e LW |
799 | SV *sv; |
| 800 | ||
| 533c011a | 801 | if (PL_op->op_flags & OPf_STACKED) |
| a0d0e21e | 802 | sv = POPs; |
| 59f00321 RGS |
803 | else if (PL_op->op_private & OPpTARGET_MY) |
| 804 | sv = GETTARGET; | |
| 79072805 | 805 | else { |
| 54b9620d | 806 | sv = DEFSV; |
| a0d0e21e | 807 | EXTEND(SP,1); |
| 79072805 | 808 | } |
| adbc6bb1 | 809 | TARG = sv_newmortal(); |
| bb16bae8 FC |
810 | if(PL_op->op_type == OP_TRANSR) { |
| 811 | SV * const newsv = newSVsv(sv); | |
| 812 | do_trans(newsv); | |
| 813 | mPUSHs(newsv); | |
| 814 | } | |
| 815 | else PUSHi(do_trans(sv)); | |
| a0d0e21e | 816 | RETURN; |
| 79072805 LW |
817 | } |
| 818 | ||
| a0d0e21e | 819 | /* Lvalue operators. */ |
| 79072805 | 820 | |
| 81745e4e NC |
821 | static void |
| 822 | S_do_chomp(pTHX_ SV *retval, SV *sv, bool chomping) | |
| 823 | { | |
| 824 | dVAR; | |
| 825 | STRLEN len; | |
| 826 | char *s; | |
| 827 | ||
| 828 | PERL_ARGS_ASSERT_DO_CHOMP; | |
| 829 | ||
| 830 | if (chomping && (RsSNARF(PL_rs) || RsRECORD(PL_rs))) | |
| 831 | return; | |
| 832 | if (SvTYPE(sv) == SVt_PVAV) { | |
| 833 | I32 i; | |
| 834 | AV *const av = MUTABLE_AV(sv); | |
| 835 | const I32 max = AvFILL(av); | |
| 836 | ||
| 837 | for (i = 0; i <= max; i++) { | |
| 838 | sv = MUTABLE_SV(av_fetch(av, i, FALSE)); | |
| 839 | if (sv && ((sv = *(SV**)sv), sv != &PL_sv_undef)) | |
| 840 | do_chomp(retval, sv, chomping); | |
| 841 | } | |
| 842 | return; | |
| 843 | } | |
| 844 | else if (SvTYPE(sv) == SVt_PVHV) { | |
| 845 | HV* const hv = MUTABLE_HV(sv); | |
| 846 | HE* entry; | |
| 847 | (void)hv_iterinit(hv); | |
| 848 | while ((entry = hv_iternext(hv))) | |
| 849 | do_chomp(retval, hv_iterval(hv,entry), chomping); | |
| 850 | return; | |
| 851 | } | |
| 852 | else if (SvREADONLY(sv)) { | |
| 853 | if (SvFAKE(sv)) { | |
| 854 | /* SV is copy-on-write */ | |
| 855 | sv_force_normal_flags(sv, 0); | |
| 856 | } | |
| 857 | if (SvREADONLY(sv)) | |
| 858 | Perl_croak_no_modify(aTHX); | |
| 859 | } | |
| 860 | ||
| 861 | if (PL_encoding) { | |
| 862 | if (!SvUTF8(sv)) { | |
| 863 | /* XXX, here sv is utf8-ized as a side-effect! | |
| 864 | If encoding.pm is used properly, almost string-generating | |
| 865 | operations, including literal strings, chr(), input data, etc. | |
| 866 | should have been utf8-ized already, right? | |
| 867 | */ | |
| 868 | sv_recode_to_utf8(sv, PL_encoding); | |
| 869 | } | |
| 870 | } | |
| 871 | ||
| 872 | s = SvPV(sv, len); | |
| 873 | if (chomping) { | |
| 874 | char *temp_buffer = NULL; | |
| 875 | SV *svrecode = NULL; | |
| 876 | ||
| 877 | if (s && len) { | |
| 878 | s += --len; | |
| 879 | if (RsPARA(PL_rs)) { | |
| 880 | if (*s != '\n') | |
| 881 | goto nope; | |
| 882 | ++SvIVX(retval); | |
| 883 | while (len && s[-1] == '\n') { | |
| 884 | --len; | |
| 885 | --s; | |
| 886 | ++SvIVX(retval); | |
| 887 | } | |
| 888 | } | |
| 889 | else { | |
| 890 | STRLEN rslen, rs_charlen; | |
| 891 | const char *rsptr = SvPV_const(PL_rs, rslen); | |
| 892 | ||
| 893 | rs_charlen = SvUTF8(PL_rs) | |
| 894 | ? sv_len_utf8(PL_rs) | |
| 895 | : rslen; | |
| 896 | ||
| 897 | if (SvUTF8(PL_rs) != SvUTF8(sv)) { | |
| 898 | /* Assumption is that rs is shorter than the scalar. */ | |
| 899 | if (SvUTF8(PL_rs)) { | |
| 900 | /* RS is utf8, scalar is 8 bit. */ | |
| 901 | bool is_utf8 = TRUE; | |
| 902 | temp_buffer = (char*)bytes_from_utf8((U8*)rsptr, | |
| 903 | &rslen, &is_utf8); | |
| 904 | if (is_utf8) { | |
| 905 | /* Cannot downgrade, therefore cannot possibly match | |
| 906 | */ | |
| 907 | assert (temp_buffer == rsptr); | |
| 908 | temp_buffer = NULL; | |
| 909 | goto nope; | |
| 910 | } | |
| 911 | rsptr = temp_buffer; | |
| 912 | } | |
| 913 | else if (PL_encoding) { | |
| 914 | /* RS is 8 bit, encoding.pm is used. | |
| 915 | * Do not recode PL_rs as a side-effect. */ | |
| 916 | svrecode = newSVpvn(rsptr, rslen); | |
| 917 | sv_recode_to_utf8(svrecode, PL_encoding); | |
| 918 | rsptr = SvPV_const(svrecode, rslen); | |
| 919 | rs_charlen = sv_len_utf8(svrecode); | |
| 920 | } | |
| 921 | else { | |
| 922 | /* RS is 8 bit, scalar is utf8. */ | |
| 923 | temp_buffer = (char*)bytes_to_utf8((U8*)rsptr, &rslen); | |
| 924 | rsptr = temp_buffer; | |
| 925 | } | |
| 926 | } | |
| 927 | if (rslen == 1) { | |
| 928 | if (*s != *rsptr) | |
| 929 | goto nope; | |
| 930 | ++SvIVX(retval); | |
| 931 | } | |
| 932 | else { | |
| 933 | if (len < rslen - 1) | |
| 934 | goto nope; | |
| 935 | len -= rslen - 1; | |
| 936 | s -= rslen - 1; | |
| 937 | if (memNE(s, rsptr, rslen)) | |
| 938 | goto nope; | |
| 939 | SvIVX(retval) += rs_charlen; | |
| 940 | } | |
| 941 | } | |
| 942 | s = SvPV_force_nolen(sv); | |
| 943 | SvCUR_set(sv, len); | |
| 944 | *SvEND(sv) = '\0'; | |
| 945 | SvNIOK_off(sv); | |
| 946 | SvSETMAGIC(sv); | |
| 947 | } | |
| 948 | nope: | |
| 949 | ||
| 950 | SvREFCNT_dec(svrecode); | |
| 951 | ||
| 952 | Safefree(temp_buffer); | |
| 953 | } else { | |
| 954 | if (len && !SvPOK(sv)) | |
| 955 | s = SvPV_force_nomg(sv, len); | |
| 956 | if (DO_UTF8(sv)) { | |
| 957 | if (s && len) { | |
| 958 | char * const send = s + len; | |
| 959 | char * const start = s; | |
| 960 | s = send - 1; | |
| 961 | while (s > start && UTF8_IS_CONTINUATION(*s)) | |
| 962 | s--; | |
| 963 | if (is_utf8_string((U8*)s, send - s)) { | |
| 964 | sv_setpvn(retval, s, send - s); | |
| 965 | *s = '\0'; | |
| 966 | SvCUR_set(sv, s - start); | |
| 967 | SvNIOK_off(sv); | |
| 968 | SvUTF8_on(retval); | |
| 969 | } | |
| 970 | } | |
| 971 | else | |
| 972 | sv_setpvs(retval, ""); | |
| 973 | } | |
| 974 | else if (s && len) { | |
| 975 | s += --len; | |
| 976 | sv_setpvn(retval, s, 1); | |
| 977 | *s = '\0'; | |
| 978 | SvCUR_set(sv, len); | |
| 979 | SvUTF8_off(sv); | |
| 980 | SvNIOK_off(sv); | |
| 981 | } | |
| 982 | else | |
| 983 | sv_setpvs(retval, ""); | |
| 984 | SvSETMAGIC(sv); | |
| 985 | } | |
| 986 | } | |
| 987 | ||
| a0d0e21e LW |
988 | PP(pp_schop) |
| 989 | { | |
| 97aff369 | 990 | dVAR; dSP; dTARGET; |
| fa54efae NC |
991 | const bool chomping = PL_op->op_type == OP_SCHOMP; |
| 992 | ||
| 993 | if (chomping) | |
| 994 | sv_setiv(TARG, 0); | |
| 995 | do_chomp(TARG, TOPs, chomping); | |
| a0d0e21e LW |
996 | SETTARG; |
| 997 | RETURN; | |
| 79072805 LW |
998 | } |
| 999 | ||
| a0d0e21e | 1000 | PP(pp_chop) |
| 79072805 | 1001 | { |
| 97aff369 | 1002 | dVAR; dSP; dMARK; dTARGET; dORIGMARK; |
| fa54efae | 1003 | const bool chomping = PL_op->op_type == OP_CHOMP; |
| 8ec5e241 | 1004 | |
| fa54efae NC |
1005 | if (chomping) |
| 1006 | sv_setiv(TARG, 0); | |
| 20cf1f79 | 1007 | while (MARK < SP) |
| fa54efae | 1008 | do_chomp(TARG, *++MARK, chomping); |
| 20cf1f79 NC |
1009 | SP = ORIGMARK; |
| 1010 | XPUSHTARG; | |
| a0d0e21e | 1011 | RETURN; |
| 79072805 LW |
1012 | } |
| 1013 | ||
| a0d0e21e LW |
1014 | PP(pp_undef) |
| 1015 | { | |
| 97aff369 | 1016 | dVAR; dSP; |
| a0d0e21e LW |
1017 | SV *sv; |
| 1018 | ||
| 533c011a | 1019 | if (!PL_op->op_private) { |
| 774d564b | 1020 | EXTEND(SP, 1); |
| a0d0e21e | 1021 | RETPUSHUNDEF; |
| 774d564b | 1022 | } |
| 79072805 | 1023 | |
| a0d0e21e LW |
1024 | sv = POPs; |
| 1025 | if (!sv) | |
| 1026 | RETPUSHUNDEF; | |
| 85e6fe83 | 1027 | |
| 765f542d | 1028 | SV_CHECK_THINKFIRST_COW_DROP(sv); |
| 85e6fe83 | 1029 | |
| a0d0e21e LW |
1030 | switch (SvTYPE(sv)) { |
| 1031 | case SVt_NULL: | |
| 1032 | break; | |
| 1033 | case SVt_PVAV: | |
| 502c6561 | 1034 | av_undef(MUTABLE_AV(sv)); |
| a0d0e21e LW |
1035 | break; |
| 1036 | case SVt_PVHV: | |
| 85fbaab2 | 1037 | hv_undef(MUTABLE_HV(sv)); |
| a0d0e21e LW |
1038 | break; |
| 1039 | case SVt_PVCV: | |
| a2a5de95 NC |
1040 | if (cv_const_sv((const CV *)sv)) |
| 1041 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), "Constant subroutine %s undefined", | |
| 1042 | CvANON((const CV *)sv) ? "(anonymous)" | |
| 1043 | : GvENAME(CvGV((const CV *)sv))); | |
| 5f66b61c | 1044 | /* FALLTHROUGH */ |
| 9607fc9c | 1045 | case SVt_PVFM: |
| 6fc92669 GS |
1046 | { |
| 1047 | /* let user-undef'd sub keep its identity */ | |
| ea726b52 NC |
1048 | GV* const gv = CvGV((const CV *)sv); |
| 1049 | cv_undef(MUTABLE_CV(sv)); | |
| b3f91e91 | 1050 | CvGV_set(MUTABLE_CV(sv), gv); |
| 6fc92669 | 1051 | } |
| a0d0e21e | 1052 | break; |
| 8e07c86e | 1053 | case SVt_PVGV: |
| 6e592b3a | 1054 | if (SvFAKE(sv)) { |
| 3280af22 | 1055 | SvSetMagicSV(sv, &PL_sv_undef); |
| 6e592b3a BM |
1056 | break; |
| 1057 | } | |
| 1058 | else if (isGV_with_GP(sv)) { | |
| 20408e3c | 1059 | GP *gp; |
| dd69841b BB |
1060 | HV *stash; |
| 1061 | ||
| dd69841b | 1062 | /* undef *Pkg::meth_name ... */ |
| e530fb81 FC |
1063 | bool method_changed |
| 1064 | = GvCVu((const GV *)sv) && (stash = GvSTASH((const GV *)sv)) | |
| 1065 | && HvENAME_get(stash); | |
| 1066 | /* undef *Foo:: */ | |
| 1067 | if((stash = GvHV((const GV *)sv))) { | |
| 1068 | if(HvENAME_get(stash)) | |
| 1069 | SvREFCNT_inc_simple_void_NN(sv_2mortal((SV *)stash)); | |
| 1070 | else stash = NULL; | |
| 1071 | } | |
| dd69841b | 1072 | |
| 159b6efe | 1073 | gp_free(MUTABLE_GV(sv)); |
| a02a5408 | 1074 | Newxz(gp, 1, GP); |
| c43ae56f | 1075 | GvGP_set(sv, gp_ref(gp)); |
| 561b68a9 | 1076 | GvSV(sv) = newSV(0); |
| 57843af0 | 1077 | GvLINE(sv) = CopLINE(PL_curcop); |
| 159b6efe | 1078 | GvEGV(sv) = MUTABLE_GV(sv); |
| 20408e3c | 1079 | GvMULTI_on(sv); |
| e530fb81 FC |
1080 | |
| 1081 | if(stash) | |
| afdbe55d | 1082 | mro_package_moved(NULL, stash, (const GV *)sv, 0); |
| e530fb81 FC |
1083 | stash = NULL; |
| 1084 | /* undef *Foo::ISA */ | |
| 1085 | if( strEQ(GvNAME((const GV *)sv), "ISA") | |
| 1086 | && (stash = GvSTASH((const GV *)sv)) | |
| 1087 | && (method_changed || HvENAME(stash)) ) | |
| 1088 | mro_isa_changed_in(stash); | |
| 1089 | else if(method_changed) | |
| 1090 | mro_method_changed_in( | |
| da9043f5 | 1091 | GvSTASH((const GV *)sv) |
| e530fb81 FC |
1092 | ); |
| 1093 | ||
| 6e592b3a | 1094 | break; |
| 20408e3c | 1095 | } |
| 6e592b3a | 1096 | /* FALL THROUGH */ |
| a0d0e21e | 1097 | default: |
| b15aece3 | 1098 | if (SvTYPE(sv) >= SVt_PV && SvPVX_const(sv) && SvLEN(sv)) { |
| 8bd4d4c5 | 1099 | SvPV_free(sv); |
| c445ea15 | 1100 | SvPV_set(sv, NULL); |
| 4633a7c4 | 1101 | SvLEN_set(sv, 0); |
| a0d0e21e | 1102 | } |
| 0c34ef67 | 1103 | SvOK_off(sv); |
| 4633a7c4 | 1104 | SvSETMAGIC(sv); |
| 79072805 | 1105 | } |
| a0d0e21e LW |
1106 | |
| 1107 | RETPUSHUNDEF; | |
| 79072805 LW |
1108 | } |
| 1109 | ||
| a0d0e21e | 1110 | PP(pp_predec) |
| 79072805 | 1111 | { |
| 97aff369 | 1112 | dVAR; dSP; |
| 6e592b3a | 1113 | if (SvTYPE(TOPs) >= SVt_PVAV || isGV_with_GP(TOPs)) |
| 6ad8f254 | 1114 | Perl_croak_no_modify(aTHX); |
| 3510b4a1 NC |
1115 | if (!SvREADONLY(TOPs) && SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) |
| 1116 | && SvIVX(TOPs) != IV_MIN) | |
| 55497cff | 1117 | { |
| 45977657 | 1118 | SvIV_set(TOPs, SvIVX(TOPs) - 1); |
| 55497cff | 1119 | SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK); |
| 748a9306 LW |
1120 | } |
| 1121 | else | |
| 1122 | sv_dec(TOPs); | |
| a0d0e21e LW |
1123 | SvSETMAGIC(TOPs); |
| 1124 | return NORMAL; | |
| 1125 | } | |
| 79072805 | 1126 | |
| a0d0e21e LW |
1127 | PP(pp_postinc) |
| 1128 | { | |
| 97aff369 | 1129 | dVAR; dSP; dTARGET; |
| 6e592b3a | 1130 | if (SvTYPE(TOPs) >= SVt_PVAV || isGV_with_GP(TOPs)) |
| 6ad8f254 | 1131 | Perl_croak_no_modify(aTHX); |
| 7dcb9b98 DM |
1132 | if (SvROK(TOPs)) |
| 1133 | TARG = sv_newmortal(); | |
| a0d0e21e | 1134 | sv_setsv(TARG, TOPs); |
| 3510b4a1 NC |
1135 | if (!SvREADONLY(TOPs) && SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) |
| 1136 | && SvIVX(TOPs) != IV_MAX) | |
| 55497cff | 1137 | { |
| 45977657 | 1138 | SvIV_set(TOPs, SvIVX(TOPs) + 1); |
| 55497cff | 1139 | SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK); |
| 748a9306 LW |
1140 | } |
| 1141 | else | |
| 6f1401dc | 1142 | sv_inc_nomg(TOPs); |
| a0d0e21e | 1143 | SvSETMAGIC(TOPs); |
| 1e54a23f | 1144 | /* special case for undef: see thread at 2003-03/msg00536.html in archive */ |
| a0d0e21e LW |
1145 | if (!SvOK(TARG)) |
| 1146 | sv_setiv(TARG, 0); | |
| 1147 | SETs(TARG); | |
| 1148 | return NORMAL; | |
| 1149 | } | |
| 79072805 | 1150 | |
| a0d0e21e LW |
1151 | PP(pp_postdec) |
| 1152 | { | |
| 97aff369 | 1153 | dVAR; dSP; dTARGET; |
| 6e592b3a | 1154 | if (SvTYPE(TOPs) >= SVt_PVAV || isGV_with_GP(TOPs)) |
| 6ad8f254 | 1155 | Perl_croak_no_modify(aTHX); |
| 7dcb9b98 DM |
1156 | if (SvROK(TOPs)) |
| 1157 | TARG = sv_newmortal(); | |
| a0d0e21e | 1158 | sv_setsv(TARG, TOPs); |
| 3510b4a1 NC |
1159 | if (!SvREADONLY(TOPs) && SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) |
| 1160 | && SvIVX(TOPs) != IV_MIN) | |
| 55497cff | 1161 | { |
| 45977657 | 1162 | SvIV_set(TOPs, SvIVX(TOPs) - 1); |
| 55497cff | 1163 | SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK); |
| 748a9306 LW |
1164 | } |
| 1165 | else | |
| 6f1401dc | 1166 | sv_dec_nomg(TOPs); |
| a0d0e21e LW |
1167 | SvSETMAGIC(TOPs); |
| 1168 | SETs(TARG); | |
| 1169 | return NORMAL; | |
| 1170 | } | |
| 79072805 | 1171 | |
| a0d0e21e LW |
1172 | /* Ordinary operators. */ |
| 1173 | ||
| 1174 | PP(pp_pow) | |
| 1175 | { | |
| 800401ee | 1176 | dVAR; dSP; dATARGET; SV *svl, *svr; |
| 58d76dfd | 1177 | #ifdef PERL_PRESERVE_IVUV |
| 52a96ae6 HS |
1178 | bool is_int = 0; |
| 1179 | #endif | |
| 6f1401dc DM |
1180 | tryAMAGICbin_MG(pow_amg, AMGf_assign|AMGf_numeric); |
| 1181 | svr = TOPs; | |
| 1182 | svl = TOPm1s; | |
| 52a96ae6 HS |
1183 | #ifdef PERL_PRESERVE_IVUV |
| 1184 | /* For integer to integer power, we do the calculation by hand wherever | |
| 1185 | we're sure it is safe; otherwise we call pow() and try to convert to | |
| 1186 | integer afterwards. */ | |
| 58d76dfd | 1187 | { |
| 6f1401dc | 1188 | SvIV_please_nomg(svr); |
| 800401ee | 1189 | if (SvIOK(svr)) { |
| 6f1401dc | 1190 | SvIV_please_nomg(svl); |
| 800401ee | 1191 | if (SvIOK(svl)) { |
| 900658e3 PF |
1192 | UV power; |
| 1193 | bool baseuok; | |
| 1194 | UV baseuv; | |
| 1195 | ||
| 800401ee JH |
1196 | if (SvUOK(svr)) { |
| 1197 | power = SvUVX(svr); | |
| 900658e3 | 1198 | } else { |
| 800401ee | 1199 | const IV iv = SvIVX(svr); |
| 900658e3 PF |
1200 | if (iv >= 0) { |
| 1201 | power = iv; | |
| 1202 | } else { | |
| 1203 | goto float_it; /* Can't do negative powers this way. */ | |
| 1204 | } | |
| 1205 | } | |
| 1206 | ||
| 800401ee | 1207 | baseuok = SvUOK(svl); |
| 900658e3 | 1208 | if (baseuok) { |
| 800401ee | 1209 | baseuv = SvUVX(svl); |
| 900658e3 | 1210 | } else { |
| 800401ee | 1211 | const IV iv = SvIVX(svl); |
| 900658e3 PF |
1212 | if (iv >= 0) { |
| 1213 | baseuv = iv; | |
| 1214 | baseuok = TRUE; /* effectively it's a UV now */ | |
| 1215 | } else { | |
| 1216 | baseuv = -iv; /* abs, baseuok == false records sign */ | |
| 1217 | } | |
| 1218 | } | |
| 52a96ae6 HS |
1219 | /* now we have integer ** positive integer. */ |
| 1220 | is_int = 1; | |
| 1221 | ||
| 1222 | /* foo & (foo - 1) is zero only for a power of 2. */ | |
| 58d76dfd | 1223 | if (!(baseuv & (baseuv - 1))) { |
| 52a96ae6 | 1224 | /* We are raising power-of-2 to a positive integer. |
| 58d76dfd JH |
1225 | The logic here will work for any base (even non-integer |
| 1226 | bases) but it can be less accurate than | |
| 1227 | pow (base,power) or exp (power * log (base)) when the | |
| 1228 | intermediate values start to spill out of the mantissa. | |
| 1229 | With powers of 2 we know this can't happen. | |
| 1230 | And powers of 2 are the favourite thing for perl | |
| 1231 | programmers to notice ** not doing what they mean. */ | |
| 1232 | NV result = 1.0; | |
| 1233 | NV base = baseuok ? baseuv : -(NV)baseuv; | |
| 900658e3 PF |
1234 | |
| 1235 | if (power & 1) { | |
| 1236 | result *= base; | |
| 1237 | } | |
| 1238 | while (power >>= 1) { | |
| 1239 | base *= base; | |
| 1240 | if (power & 1) { | |
| 1241 | result *= base; | |
| 1242 | } | |
| 1243 | } | |
| 58d76dfd JH |
1244 | SP--; |
| 1245 | SETn( result ); | |
| 6f1401dc | 1246 | SvIV_please_nomg(svr); |
| 58d76dfd | 1247 | RETURN; |
| 52a96ae6 HS |
1248 | } else { |
| 1249 | register unsigned int highbit = 8 * sizeof(UV); | |
| 900658e3 PF |
1250 | register unsigned int diff = 8 * sizeof(UV); |
| 1251 | while (diff >>= 1) { | |
| 1252 | highbit -= diff; | |
| 1253 | if (baseuv >> highbit) { | |
| 1254 | highbit += diff; | |
| 1255 | } | |
| 52a96ae6 HS |
1256 | } |
| 1257 | /* we now have baseuv < 2 ** highbit */ | |
| 1258 | if (power * highbit <= 8 * sizeof(UV)) { | |
| 1259 | /* result will definitely fit in UV, so use UV math | |
| 1260 | on same algorithm as above */ | |
| 1261 | register UV result = 1; | |
| 1262 | register UV base = baseuv; | |
| f2338a2e | 1263 | const bool odd_power = cBOOL(power & 1); |
| 900658e3 PF |
1264 | if (odd_power) { |
| 1265 | result *= base; | |
| 1266 | } | |
| 1267 | while (power >>= 1) { | |
| 1268 | base *= base; | |
| 1269 | if (power & 1) { | |
| 52a96ae6 | 1270 | result *= base; |
| 52a96ae6 HS |
1271 | } |
| 1272 | } | |
| 1273 | SP--; | |
| 0615a994 | 1274 | if (baseuok || !odd_power) |
| 52a96ae6 HS |
1275 | /* answer is positive */ |
| 1276 | SETu( result ); | |
| 1277 | else if (result <= (UV)IV_MAX) | |
| 1278 | /* answer negative, fits in IV */ | |
| 1279 | SETi( -(IV)result ); | |
| 1280 | else if (result == (UV)IV_MIN) | |
| 1281 | /* 2's complement assumption: special case IV_MIN */ | |
| 1282 | SETi( IV_MIN ); | |
| 1283 | else | |
| 1284 | /* answer negative, doesn't fit */ | |
| 1285 | SETn( -(NV)result ); | |
| 1286 | RETURN; | |
| 1287 | } | |
| 1288 | } | |
| 1289 | } | |
| 1290 | } | |
| 58d76dfd | 1291 | } |
| 52a96ae6 | 1292 | float_it: |
| 58d76dfd | 1293 | #endif |
| a0d0e21e | 1294 | { |
| 6f1401dc DM |
1295 | NV right = SvNV_nomg(svr); |
| 1296 | NV left = SvNV_nomg(svl); | |
| 4efa5a16 | 1297 | (void)POPs; |
| 3aaeb624 JA |
1298 | |
| 1299 | #if defined(USE_LONG_DOUBLE) && defined(HAS_AIX_POWL_NEG_BASE_BUG) | |
| 1300 | /* | |
| 1301 | We are building perl with long double support and are on an AIX OS | |
| 1302 | afflicted with a powl() function that wrongly returns NaNQ for any | |
| 1303 | negative base. This was reported to IBM as PMR #23047-379 on | |
| 1304 | 03/06/2006. The problem exists in at least the following versions | |
| 1305 | of AIX and the libm fileset, and no doubt others as well: | |
| 1306 | ||
| 1307 | AIX 4.3.3-ML10 bos.adt.libm 4.3.3.50 | |
| 1308 | AIX 5.1.0-ML04 bos.adt.libm 5.1.0.29 | |
| 1309 | AIX 5.2.0 bos.adt.libm 5.2.0.85 | |
| 1310 | ||
| 1311 | So, until IBM fixes powl(), we provide the following workaround to | |
| 1312 | handle the problem ourselves. Our logic is as follows: for | |
| 1313 | negative bases (left), we use fmod(right, 2) to check if the | |
| 1314 | exponent is an odd or even integer: | |
| 1315 | ||
| 1316 | - if odd, powl(left, right) == -powl(-left, right) | |
| 1317 | - if even, powl(left, right) == powl(-left, right) | |
| 1318 | ||
| 1319 | If the exponent is not an integer, the result is rightly NaNQ, so | |
| 1320 | we just return that (as NV_NAN). | |
| 1321 | */ | |
| 1322 | ||
| 1323 | if (left < 0.0) { | |
| 1324 | NV mod2 = Perl_fmod( right, 2.0 ); | |
| 1325 | if (mod2 == 1.0 || mod2 == -1.0) { /* odd integer */ | |
| 1326 | SETn( -Perl_pow( -left, right) ); | |
| 1327 | } else if (mod2 == 0.0) { /* even integer */ | |
| 1328 | SETn( Perl_pow( -left, right) ); | |
| 1329 | } else { /* fractional power */ | |
| 1330 | SETn( NV_NAN ); | |
| 1331 | } | |
| 1332 | } else { | |
| 1333 | SETn( Perl_pow( left, right) ); | |
| 1334 | } | |
| 1335 | #else | |
| 52a96ae6 | 1336 | SETn( Perl_pow( left, right) ); |
| 3aaeb624 JA |
1337 | #endif /* HAS_AIX_POWL_NEG_BASE_BUG */ |
| 1338 | ||
| 52a96ae6 HS |
1339 | #ifdef PERL_PRESERVE_IVUV |
| 1340 | if (is_int) | |
| 6f1401dc | 1341 | SvIV_please_nomg(svr); |
| 52a96ae6 HS |
1342 | #endif |
| 1343 | RETURN; | |
| 93a17b20 | 1344 | } |
| a0d0e21e LW |
1345 | } |
| 1346 | ||
| 1347 | PP(pp_multiply) | |
| 1348 | { | |
| 800401ee | 1349 | dVAR; dSP; dATARGET; SV *svl, *svr; |
| 6f1401dc DM |
1350 | tryAMAGICbin_MG(mult_amg, AMGf_assign|AMGf_numeric); |
| 1351 | svr = TOPs; | |
| 1352 | svl = TOPm1s; | |
| 28e5dec8 | 1353 | #ifdef PERL_PRESERVE_IVUV |
| 6f1401dc | 1354 | SvIV_please_nomg(svr); |
| 800401ee | 1355 | if (SvIOK(svr)) { |
| 28e5dec8 JH |
1356 | /* Unless the left argument is integer in range we are going to have to |
| 1357 | use NV maths. Hence only attempt to coerce the right argument if | |
| 1358 | we know the left is integer. */ | |
| 1359 | /* Left operand is defined, so is it IV? */ | |
| 6f1401dc | 1360 | SvIV_please_nomg(svl); |
| 800401ee JH |
1361 | if (SvIOK(svl)) { |
| 1362 | bool auvok = SvUOK(svl); | |
| 1363 | bool buvok = SvUOK(svr); | |
| 28e5dec8 JH |
1364 | const UV topmask = (~ (UV)0) << (4 * sizeof (UV)); |
| 1365 | const UV botmask = ~((~ (UV)0) << (4 * sizeof (UV))); | |
| 1366 | UV alow; | |
| 1367 | UV ahigh; | |
| 1368 | UV blow; | |
| 1369 | UV bhigh; | |
| 1370 | ||
| 1371 | if (auvok) { | |
| 800401ee | 1372 | alow = SvUVX(svl); |
| 28e5dec8 | 1373 | } else { |
| 800401ee | 1374 | const IV aiv = SvIVX(svl); |
| 28e5dec8 JH |
1375 | if (aiv >= 0) { |
| 1376 | alow = aiv; | |
| 1377 | auvok = TRUE; /* effectively it's a UV now */ | |
| 1378 | } else { | |
| 1379 | alow = -aiv; /* abs, auvok == false records sign */ | |
| 1380 | } | |
| 1381 | } | |
| 1382 | if (buvok) { | |
| 800401ee | 1383 | blow = SvUVX(svr); |
| 28e5dec8 | 1384 | } else { |
| 800401ee | 1385 | const IV biv = SvIVX(svr); |
| 28e5dec8 JH |
1386 | if (biv >= 0) { |
| 1387 | blow = biv; | |
| 1388 | buvok = TRUE; /* effectively it's a UV now */ | |
| 1389 | } else { | |
| 1390 | blow = -biv; /* abs, buvok == false records sign */ | |
| 1391 | } | |
| 1392 | } | |
| 1393 | ||
| 1394 | /* If this does sign extension on unsigned it's time for plan B */ | |
| 1395 | ahigh = alow >> (4 * sizeof (UV)); | |
| 1396 | alow &= botmask; | |
| 1397 | bhigh = blow >> (4 * sizeof (UV)); | |
| 1398 | blow &= botmask; | |
| 1399 | if (ahigh && bhigh) { | |
| 6f207bd3 | 1400 | NOOP; |
| 28e5dec8 JH |
1401 | /* eg 32 bit is at least 0x10000 * 0x10000 == 0x100000000 |
| 1402 | which is overflow. Drop to NVs below. */ | |
| 1403 | } else if (!ahigh && !bhigh) { | |
| 1404 | /* eg 32 bit is at most 0xFFFF * 0xFFFF == 0xFFFE0001 | |
| 1405 | so the unsigned multiply cannot overflow. */ | |
| c445ea15 | 1406 | const UV product = alow * blow; |
| 28e5dec8 JH |
1407 | if (auvok == buvok) { |
| 1408 | /* -ve * -ve or +ve * +ve gives a +ve result. */ | |
| 1409 | SP--; | |
| 1410 | SETu( product ); | |
| 1411 | RETURN; | |
| 1412 | } else if (product <= (UV)IV_MIN) { | |
| 1413 | /* 2s complement assumption that (UV)-IV_MIN is correct. */ | |
| 1414 | /* -ve result, which could overflow an IV */ | |
| 1415 | SP--; | |
| 25716404 | 1416 | SETi( -(IV)product ); |
| 28e5dec8 JH |
1417 | RETURN; |
| 1418 | } /* else drop to NVs below. */ | |
| 1419 | } else { | |
| 1420 | /* One operand is large, 1 small */ | |
| 1421 | UV product_middle; | |
| 1422 | if (bhigh) { | |
| 1423 | /* swap the operands */ | |
| 1424 | ahigh = bhigh; | |
| 1425 | bhigh = blow; /* bhigh now the temp var for the swap */ | |
| 1426 | blow = alow; | |
| 1427 | alow = bhigh; | |
| 1428 | } | |
| 1429 | /* now, ((ahigh * blow) << half_UV_len) + (alow * blow) | |
| 1430 | multiplies can't overflow. shift can, add can, -ve can. */ | |
| 1431 | product_middle = ahigh * blow; | |
| 1432 | if (!(product_middle & topmask)) { | |
| 1433 | /* OK, (ahigh * blow) won't lose bits when we shift it. */ | |
| 1434 | UV product_low; | |
| 1435 | product_middle <<= (4 * sizeof (UV)); | |
| 1436 | product_low = alow * blow; | |
| 1437 | ||
| 1438 | /* as for pp_add, UV + something mustn't get smaller. | |
| 1439 | IIRC ANSI mandates this wrapping *behaviour* for | |
| 1440 | unsigned whatever the actual representation*/ | |
| 1441 | product_low += product_middle; | |
| 1442 | if (product_low >= product_middle) { | |
| 1443 | /* didn't overflow */ | |
| 1444 | if (auvok == buvok) { | |
| 1445 | /* -ve * -ve or +ve * +ve gives a +ve result. */ | |
| 1446 | SP--; | |
| 1447 | SETu( product_low ); | |
| 1448 | RETURN; | |
| 1449 | } else if (product_low <= (UV)IV_MIN) { | |
| 1450 | /* 2s complement assumption again */ | |
| 1451 | /* -ve result, which could overflow an IV */ | |
| 1452 | SP--; | |
| 25716404 | 1453 | SETi( -(IV)product_low ); |
| 28e5dec8 JH |
1454 | RETURN; |
| 1455 | } /* else drop to NVs below. */ | |
| 1456 | } | |
| 1457 | } /* product_middle too large */ | |
| 1458 | } /* ahigh && bhigh */ | |
| 800401ee JH |
1459 | } /* SvIOK(svl) */ |
| 1460 | } /* SvIOK(svr) */ | |
| 28e5dec8 | 1461 | #endif |
| a0d0e21e | 1462 | { |
| 6f1401dc DM |
1463 | NV right = SvNV_nomg(svr); |
| 1464 | NV left = SvNV_nomg(svl); | |
| 4efa5a16 | 1465 | (void)POPs; |
| a0d0e21e LW |
1466 | SETn( left * right ); |
| 1467 | RETURN; | |
| 79072805 | 1468 | } |
| a0d0e21e LW |
1469 | } |
| 1470 | ||
| 1471 | PP(pp_divide) | |
| 1472 | { | |
| 800401ee | 1473 | dVAR; dSP; dATARGET; SV *svl, *svr; |
| 6f1401dc DM |
1474 | tryAMAGICbin_MG(div_amg, AMGf_assign|AMGf_numeric); |
| 1475 | svr = TOPs; | |
| 1476 | svl = TOPm1s; | |
| 5479d192 | 1477 | /* Only try to do UV divide first |
| 68795e93 | 1478 | if ((SLOPPYDIVIDE is true) or |
| 5479d192 NC |
1479 | (PERL_PRESERVE_IVUV is true and one or both SV is a UV too large |
| 1480 | to preserve)) | |
| 1481 | The assumption is that it is better to use floating point divide | |
| 1482 | whenever possible, only doing integer divide first if we can't be sure. | |
| 1483 | If NV_PRESERVES_UV is true then we know at compile time that no UV | |
| 1484 | can be too large to preserve, so don't need to compile the code to | |
| 1485 | test the size of UVs. */ | |
| 1486 | ||
| a0d0e21e | 1487 | #ifdef SLOPPYDIVIDE |
| 5479d192 NC |
1488 | # define PERL_TRY_UV_DIVIDE |
| 1489 | /* ensure that 20./5. == 4. */ | |
| a0d0e21e | 1490 | #else |
| 5479d192 NC |
1491 | # ifdef PERL_PRESERVE_IVUV |
| 1492 | # ifndef NV_PRESERVES_UV | |
| 1493 | # define PERL_TRY_UV_DIVIDE | |
| 1494 | # endif | |
| 1495 | # endif | |
| a0d0e21e | 1496 | #endif |
| 5479d192 NC |
1497 | |
| 1498 | #ifdef PERL_TRY_UV_DIVIDE | |
| 6f1401dc | 1499 | SvIV_please_nomg(svr); |
| 800401ee | 1500 | if (SvIOK(svr)) { |
| 6f1401dc | 1501 | SvIV_please_nomg(svl); |
| 800401ee JH |
1502 | if (SvIOK(svl)) { |
| 1503 | bool left_non_neg = SvUOK(svl); | |
| 1504 | bool right_non_neg = SvUOK(svr); | |
| 5479d192 NC |
1505 | UV left; |
| 1506 | UV right; | |
| 1507 | ||
| 1508 | if (right_non_neg) { | |
| 800401ee | 1509 | right = SvUVX(svr); |
| 5479d192 NC |
1510 | } |
| 1511 | else { | |
| 800401ee | 1512 | const IV biv = SvIVX(svr); |
| 5479d192 NC |
1513 | if (biv >= 0) { |
| 1514 | right = biv; | |
| 1515 | right_non_neg = TRUE; /* effectively it's a UV now */ | |
| 1516 | } | |
| 1517 | else { | |
| 1518 | right = -biv; | |
| 1519 | } | |
| 1520 | } | |
| 1521 | /* historically undef()/0 gives a "Use of uninitialized value" | |
| 1522 | warning before dieing, hence this test goes here. | |
| 1523 | If it were immediately before the second SvIV_please, then | |
| 1524 | DIE() would be invoked before left was even inspected, so | |
| 486ec47a | 1525 | no inspection would give no warning. */ |
| 5479d192 NC |
1526 | if (right == 0) |
| 1527 | DIE(aTHX_ "Illegal division by zero"); | |
| 1528 | ||
| 1529 | if (left_non_neg) { | |
| 800401ee | 1530 | left = SvUVX(svl); |
| 5479d192 NC |
1531 | } |
| 1532 | else { | |
| 800401ee | 1533 | const IV aiv = SvIVX(svl); |
| 5479d192 NC |
1534 | if (aiv >= 0) { |
| 1535 | left = aiv; | |
| 1536 | left_non_neg = TRUE; /* effectively it's a UV now */ | |
| 1537 | } | |
| 1538 | else { | |
| 1539 | left = -aiv; | |
| 1540 | } | |
| 1541 | } | |
| 1542 | ||
| 1543 | if (left >= right | |
| 1544 | #ifdef SLOPPYDIVIDE | |
| 1545 | /* For sloppy divide we always attempt integer division. */ | |
| 1546 | #else | |
| 1547 | /* Otherwise we only attempt it if either or both operands | |
| 1548 | would not be preserved by an NV. If both fit in NVs | |
| 0c2ee62a NC |
1549 | we fall through to the NV divide code below. However, |
| 1550 | as left >= right to ensure integer result here, we know that | |
| 1551 | we can skip the test on the right operand - right big | |
| 1552 | enough not to be preserved can't get here unless left is | |
| 1553 | also too big. */ | |
| 1554 | ||
| 1555 | && (left > ((UV)1 << NV_PRESERVES_UV_BITS)) | |
| 5479d192 NC |
1556 | #endif |
| 1557 | ) { | |
| 1558 | /* Integer division can't overflow, but it can be imprecise. */ | |
| 1b6737cc | 1559 | const UV result = left / right; |
| 5479d192 NC |
1560 | if (result * right == left) { |
| 1561 | SP--; /* result is valid */ | |
| 1562 | if (left_non_neg == right_non_neg) { | |
| 1563 | /* signs identical, result is positive. */ | |
| 1564 | SETu( result ); | |
| 1565 | RETURN; | |
| 1566 | } | |
| 1567 | /* 2s complement assumption */ | |
| 1568 | if (result <= (UV)IV_MIN) | |
| 91f3b821 | 1569 | SETi( -(IV)result ); |
| 5479d192 NC |
1570 | else { |
| 1571 | /* It's exact but too negative for IV. */ | |
| 1572 | SETn( -(NV)result ); | |
| 1573 | } | |
| 1574 | RETURN; | |
| 1575 | } /* tried integer divide but it was not an integer result */ | |
| 32fdb065 | 1576 | } /* else (PERL_ABS(result) < 1.0) or (both UVs in range for NV) */ |
| 5479d192 NC |
1577 | } /* left wasn't SvIOK */ |
| 1578 | } /* right wasn't SvIOK */ | |
| 1579 | #endif /* PERL_TRY_UV_DIVIDE */ | |
| 1580 | { | |
| 6f1401dc DM |
1581 | NV right = SvNV_nomg(svr); |
| 1582 | NV left = SvNV_nomg(svl); | |
| 4efa5a16 | 1583 | (void)POPs;(void)POPs; |
| ebc6a117 PD |
1584 | #if defined(NAN_COMPARE_BROKEN) && defined(Perl_isnan) |
| 1585 | if (! Perl_isnan(right) && right == 0.0) | |
| 1586 | #else | |
| 5479d192 | 1587 | if (right == 0.0) |
| ebc6a117 | 1588 | #endif |
| 5479d192 NC |
1589 | DIE(aTHX_ "Illegal division by zero"); |
| 1590 | PUSHn( left / right ); | |
| 1591 | RETURN; | |
| 79072805 | 1592 | } |
| a0d0e21e LW |
1593 | } |
| 1594 | ||
| 1595 | PP(pp_modulo) | |
| 1596 | { | |
| 6f1401dc DM |
1597 | dVAR; dSP; dATARGET; |
| 1598 | tryAMAGICbin_MG(modulo_amg, AMGf_assign|AMGf_numeric); | |
| a0d0e21e | 1599 | { |
| 9c5ffd7c JH |
1600 | UV left = 0; |
| 1601 | UV right = 0; | |
| dc656993 JH |
1602 | bool left_neg = FALSE; |
| 1603 | bool right_neg = FALSE; | |
| e2c88acc NC |
1604 | bool use_double = FALSE; |
| 1605 | bool dright_valid = FALSE; | |
| 9c5ffd7c JH |
1606 | NV dright = 0.0; |
| 1607 | NV dleft = 0.0; | |
| 6f1401dc DM |
1608 | SV * const svr = TOPs; |
| 1609 | SV * const svl = TOPm1s; | |
| 1610 | SvIV_please_nomg(svr); | |
| 800401ee JH |
1611 | if (SvIOK(svr)) { |
| 1612 | right_neg = !SvUOK(svr); | |
| e2c88acc | 1613 | if (!right_neg) { |
| 800401ee | 1614 | right = SvUVX(svr); |
| e2c88acc | 1615 | } else { |
| 800401ee | 1616 | const IV biv = SvIVX(svr); |
| e2c88acc NC |
1617 | if (biv >= 0) { |
| 1618 | right = biv; | |
| 1619 | right_neg = FALSE; /* effectively it's a UV now */ | |
| 1620 | } else { | |
| 1621 | right = -biv; | |
| 1622 | } | |
| 1623 | } | |
| 1624 | } | |
| 1625 | else { | |
| 6f1401dc | 1626 | dright = SvNV_nomg(svr); |
| 787eafbd IZ |
1627 | right_neg = dright < 0; |
| 1628 | if (right_neg) | |
| 1629 | dright = -dright; | |
| e2c88acc NC |
1630 | if (dright < UV_MAX_P1) { |
| 1631 | right = U_V(dright); | |
| 1632 | dright_valid = TRUE; /* In case we need to use double below. */ | |
| 1633 | } else { | |
| 1634 | use_double = TRUE; | |
| 1635 | } | |
| 787eafbd | 1636 | } |
| a0d0e21e | 1637 | |
| e2c88acc NC |
1638 | /* At this point use_double is only true if right is out of range for |
| 1639 | a UV. In range NV has been rounded down to nearest UV and | |
| 1640 | use_double false. */ | |
| 6f1401dc | 1641 | SvIV_please_nomg(svl); |
| 800401ee JH |
1642 | if (!use_double && SvIOK(svl)) { |
| 1643 | if (SvIOK(svl)) { | |
| 1644 | left_neg = !SvUOK(svl); | |
| e2c88acc | 1645 | if (!left_neg) { |
| 800401ee | 1646 | left = SvUVX(svl); |
| e2c88acc | 1647 | } else { |
| 800401ee | 1648 | const IV aiv = SvIVX(svl); |
| e2c88acc NC |
1649 | if (aiv >= 0) { |
| 1650 | left = aiv; | |
| 1651 | left_neg = FALSE; /* effectively it's a UV now */ | |
| 1652 | } else { | |
| 1653 | left = -aiv; | |
| 1654 | } | |
| 1655 | } | |
| 1656 | } | |
| 1657 | } | |
| 787eafbd | 1658 | else { |
| 6f1401dc | 1659 | dleft = SvNV_nomg(svl); |
| 787eafbd IZ |
1660 | left_neg = dleft < 0; |
| 1661 | if (left_neg) | |
| 1662 | dleft = -dleft; | |
| 68dc0745 | 1663 | |
| e2c88acc NC |
1664 | /* This should be exactly the 5.6 behaviour - if left and right are |
| 1665 | both in range for UV then use U_V() rather than floor. */ | |
| 1666 | if (!use_double) { | |
| 1667 | if (dleft < UV_MAX_P1) { | |
| 1668 | /* right was in range, so is dleft, so use UVs not double. | |
| 1669 | */ | |
| 1670 | left = U_V(dleft); | |
| 1671 | } | |
| 1672 | /* left is out of range for UV, right was in range, so promote | |
| 1673 | right (back) to double. */ | |
| 1674 | else { | |
| 1675 | /* The +0.5 is used in 5.6 even though it is not strictly | |
| 1676 | consistent with the implicit +0 floor in the U_V() | |
| 1677 | inside the #if 1. */ | |
| 1678 | dleft = Perl_floor(dleft + 0.5); | |
| 1679 | use_double = TRUE; | |
| 1680 | if (dright_valid) | |
| 1681 | dright = Perl_floor(dright + 0.5); | |
| 1682 | else | |
| 1683 | dright = right; | |
| 1684 | } | |
| 1685 | } | |
| 1686 | } | |
| 6f1401dc | 1687 | sp -= 2; |
| 787eafbd | 1688 | if (use_double) { |
| 65202027 | 1689 | NV dans; |
| 787eafbd | 1690 | |
| 787eafbd | 1691 | if (!dright) |
| cea2e8a9 | 1692 | DIE(aTHX_ "Illegal modulus zero"); |
| 787eafbd | 1693 | |
| 65202027 | 1694 | dans = Perl_fmod(dleft, dright); |
| 787eafbd IZ |
1695 | if ((left_neg != right_neg) && dans) |
| 1696 | dans = dright - dans; | |
| 1697 | if (right_neg) | |
| 1698 | dans = -dans; | |
| 1699 | sv_setnv(TARG, dans); | |
| 1700 | } | |
| 1701 | else { | |
| 1702 | UV ans; | |
| 1703 | ||
| 787eafbd | 1704 | if (!right) |
| cea2e8a9 | 1705 | DIE(aTHX_ "Illegal modulus zero"); |
| 787eafbd IZ |
1706 | |
| 1707 | ans = left % right; | |
| 1708 | if ((left_neg != right_neg) && ans) | |
| 1709 | ans = right - ans; | |
| 1710 | if (right_neg) { | |
| 1711 | /* XXX may warn: unary minus operator applied to unsigned type */ | |
| 1712 | /* could change -foo to be (~foo)+1 instead */ | |
| 1713 | if (ans <= ~((UV)IV_MAX)+1) | |
| 1714 | sv_setiv(TARG, ~ans+1); | |
| 1715 | else | |
| 65202027 | 1716 | sv_setnv(TARG, -(NV)ans); |
| 787eafbd IZ |
1717 | } |
| 1718 | else | |
| 1719 | sv_setuv(TARG, ans); | |
| 1720 | } | |
| 1721 | PUSHTARG; | |
| 1722 | RETURN; | |
| 79072805 | 1723 | } |
| a0d0e21e | 1724 | } |
| 79072805 | 1725 | |
| a0d0e21e LW |
1726 | PP(pp_repeat) |
| 1727 | { | |
| 6f1401dc | 1728 | dVAR; dSP; dATARGET; |
| 2b573ace | 1729 | register IV count; |
| 6f1401dc DM |
1730 | SV *sv; |
| 1731 | ||
| 1732 | if (GIMME == G_ARRAY && PL_op->op_private & OPpREPEAT_DOLIST) { | |
| 1733 | /* TODO: think of some way of doing list-repeat overloading ??? */ | |
| 1734 | sv = POPs; | |
| 1735 | SvGETMAGIC(sv); | |
| 1736 | } | |
| 1737 | else { | |
| 1738 | tryAMAGICbin_MG(repeat_amg, AMGf_assign); | |
| 1739 | sv = POPs; | |
| 1740 | } | |
| 1741 | ||
| 2b573ace JH |
1742 | if (SvIOKp(sv)) { |
| 1743 | if (SvUOK(sv)) { | |
| 6f1401dc | 1744 | const UV uv = SvUV_nomg(sv); |
| 2b573ace JH |
1745 | if (uv > IV_MAX) |
| 1746 | count = IV_MAX; /* The best we can do? */ | |
| 1747 | else | |
| 1748 | count = uv; | |
| 1749 | } else { | |
| 6f1401dc | 1750 | const IV iv = SvIV_nomg(sv); |
| 2b573ace JH |
1751 | if (iv < 0) |
| 1752 | count = 0; | |
| 1753 | else | |
| 1754 | count = iv; | |
| 1755 | } | |
| 1756 | } | |
| 1757 | else if (SvNOKp(sv)) { | |
| 6f1401dc | 1758 | const NV nv = SvNV_nomg(sv); |
| 2b573ace JH |
1759 | if (nv < 0.0) |
| 1760 | count = 0; | |
| 1761 | else | |
| 1762 | count = (IV)nv; | |
| 1763 | } | |
| 1764 | else | |
| 6f1401dc DM |
1765 | count = SvIV_nomg(sv); |
| 1766 | ||
| 533c011a | 1767 | if (GIMME == G_ARRAY && PL_op->op_private & OPpREPEAT_DOLIST) { |
| a0d0e21e | 1768 | dMARK; |
| 0bd48802 AL |
1769 | static const char oom_list_extend[] = "Out of memory during list extend"; |
| 1770 | const I32 items = SP - MARK; | |
| 1771 | const I32 max = items * count; | |
| 79072805 | 1772 | |
| 2b573ace JH |
1773 | MEM_WRAP_CHECK_1(max, SV*, oom_list_extend); |
| 1774 | /* Did the max computation overflow? */ | |
| 27d5b266 | 1775 | if (items > 0 && max > 0 && (max < items || max < count)) |
| 2b573ace | 1776 | Perl_croak(aTHX_ oom_list_extend); |
| a0d0e21e LW |
1777 | MEXTEND(MARK, max); |
| 1778 | if (count > 1) { | |
| 1779 | while (SP > MARK) { | |
| 976c8a39 JH |
1780 | #if 0 |
| 1781 | /* This code was intended to fix 20010809.028: | |
| 1782 | ||
| 1783 | $x = 'abcd'; | |
| 1784 | for (($x =~ /./g) x 2) { | |
| 1785 | print chop; # "abcdabcd" expected as output. | |
| 1786 | } | |
| 1787 | ||
| 1788 | * but that change (#11635) broke this code: | |
| 1789 | ||
| 1790 | $x = [("foo")x2]; # only one "foo" ended up in the anonlist. | |
| 1791 | ||
| 1792 | * I can't think of a better fix that doesn't introduce | |
| 1793 | * an efficiency hit by copying the SVs. The stack isn't | |
| 1794 | * refcounted, and mortalisation obviously doesn't | |
| 1795 | * Do The Right Thing when the stack has more than | |
| 1796 | * one pointer to the same mortal value. | |
| 1797 | * .robin. | |
| 1798 | */ | |
| e30acc16 RH |
1799 | if (*SP) { |
| 1800 | *SP = sv_2mortal(newSVsv(*SP)); | |
| 1801 | SvREADONLY_on(*SP); | |
| 1802 | } | |
| 976c8a39 JH |
1803 | #else |
| 1804 | if (*SP) | |
| 1805 | SvTEMP_off((*SP)); | |
| 1806 | #endif | |
| a0d0e21e | 1807 | SP--; |
| 79072805 | 1808 | } |
| a0d0e21e LW |
1809 | MARK++; |
| 1810 | repeatcpy((char*)(MARK + items), (char*)MARK, | |
| ad64d0ec | 1811 | items * sizeof(const SV *), count - 1); |
| a0d0e21e | 1812 | SP += max; |
| 79072805 | 1813 | } |
| a0d0e21e LW |
1814 | else if (count <= 0) |
| 1815 | SP -= items; | |
| 79072805 | 1816 | } |
| a0d0e21e | 1817 | else { /* Note: mark already snarfed by pp_list */ |
| 0bd48802 | 1818 | SV * const tmpstr = POPs; |
| a0d0e21e | 1819 | STRLEN len; |
| 9b877dbb | 1820 | bool isutf; |
| 2b573ace JH |
1821 | static const char oom_string_extend[] = |
| 1822 | "Out of memory during string extend"; | |
| a0d0e21e | 1823 | |
| 6f1401dc DM |
1824 | if (TARG != tmpstr) |
| 1825 | sv_setsv_nomg(TARG, tmpstr); | |
| 1826 | SvPV_force_nomg(TARG, len); | |
| 9b877dbb | 1827 | isutf = DO_UTF8(TARG); |
| 8ebc5c01 | 1828 | if (count != 1) { |
| 1829 | if (count < 1) | |
| 1830 | SvCUR_set(TARG, 0); | |
| 1831 | else { | |
| c445ea15 | 1832 | const STRLEN max = (UV)count * len; |
| 19a94d75 | 1833 | if (len > MEM_SIZE_MAX / count) |
| 2b573ace JH |
1834 | Perl_croak(aTHX_ oom_string_extend); |
| 1835 | MEM_WRAP_CHECK_1(max, char, oom_string_extend); | |
| 8569b9dc | 1836 | SvGROW(TARG, max + 1); |
| a0d0e21e | 1837 | repeatcpy(SvPVX(TARG) + len, SvPVX(TARG), len, count - 1); |
| b162af07 | 1838 | SvCUR_set(TARG, SvCUR(TARG) * count); |
| 7a4c00b4 | 1839 | } |
| a0d0e21e | 1840 | *SvEND(TARG) = '\0'; |
| a0d0e21e | 1841 | } |
| dfcb284a GS |
1842 | if (isutf) |
| 1843 | (void)SvPOK_only_UTF8(TARG); | |
| 1844 | else | |
| 1845 | (void)SvPOK_only(TARG); | |
| b80b6069 RH |
1846 | |
| 1847 | if (PL_op->op_private & OPpREPEAT_DOLIST) { | |
| 1848 | /* The parser saw this as a list repeat, and there | |
| 1849 | are probably several items on the stack. But we're | |
| 1850 | in scalar context, and there's no pp_list to save us | |
| 1851 | now. So drop the rest of the items -- robin@kitsite.com | |
| 1852 | */ | |
| 1853 | dMARK; | |
| 1854 | SP = MARK; | |
| 1855 | } | |
| a0d0e21e | 1856 | PUSHTARG; |
| 79072805 | 1857 | } |
| a0d0e21e LW |
1858 | RETURN; |
| 1859 | } | |
| 79072805 | 1860 | |
| a0d0e21e LW |
1861 | PP(pp_subtract) |
| 1862 | { | |
| 800401ee | 1863 | dVAR; dSP; dATARGET; bool useleft; SV *svl, *svr; |
| 6f1401dc DM |
1864 | tryAMAGICbin_MG(subtr_amg, AMGf_assign|AMGf_numeric); |
| 1865 | svr = TOPs; | |
| 1866 | svl = TOPm1s; | |
| 800401ee | 1867 | useleft = USE_LEFT(svl); |
| 28e5dec8 | 1868 | #ifdef PERL_PRESERVE_IVUV |
| 7dca457a NC |
1869 | /* See comments in pp_add (in pp_hot.c) about Overflow, and how |
| 1870 | "bad things" happen if you rely on signed integers wrapping. */ | |
| 6f1401dc | 1871 | SvIV_please_nomg(svr); |
| 800401ee | 1872 | if (SvIOK(svr)) { |
| 28e5dec8 JH |
1873 | /* Unless the left argument is integer in range we are going to have to |
| 1874 | use NV maths. Hence only attempt to coerce the right argument if | |
| 1875 | we know the left is integer. */ | |
| 9c5ffd7c JH |
1876 | register UV auv = 0; |
| 1877 | bool auvok = FALSE; | |
| 7dca457a NC |
1878 | bool a_valid = 0; |
| 1879 | ||
| 28e5dec8 | 1880 | if (!useleft) { |
| 7dca457a NC |
1881 | auv = 0; |
| 1882 | a_valid = auvok = 1; | |
| 1883 | /* left operand is undef, treat as zero. */ | |
| 28e5dec8 JH |
1884 | } else { |
| 1885 | /* Left operand is defined, so is it IV? */ | |
| 6f1401dc | 1886 | SvIV_please_nomg(svl); |
| 800401ee JH |
1887 | if (SvIOK(svl)) { |
| 1888 | if ((auvok = SvUOK(svl))) | |
| 1889 | auv = SvUVX(svl); | |
| 7dca457a | 1890 | else { |
| 800401ee | 1891 | register const IV aiv = SvIVX(svl); |
| 7dca457a NC |
1892 | if (aiv >= 0) { |
| 1893 | auv = aiv; | |
| 1894 | auvok = 1; /* Now acting as a sign flag. */ | |
| 1895 | } else { /* 2s complement assumption for IV_MIN */ | |
| 1896 | auv = (UV)-aiv; | |
| 28e5dec8 | 1897 | } |
| 7dca457a NC |
1898 | } |
| 1899 | a_valid = 1; | |
| 1900 | } | |
| 1901 | } | |
| 1902 | if (a_valid) { | |
| 1903 | bool result_good = 0; | |
| 1904 | UV result; | |
| 1905 | register UV buv; | |
| 800401ee | 1906 | bool buvok = SvUOK(svr); |
| 9041c2e3 | 1907 | |
| 7dca457a | 1908 | if (buvok) |
| 800401ee | 1909 | buv = SvUVX(svr); |
| 7dca457a | 1910 | else { |
| 800401ee | 1911 | register const IV biv = SvIVX(svr); |
| 7dca457a NC |
1912 | if (biv >= 0) { |
| 1913 | buv = biv; | |
| 1914 | buvok = 1; | |
| 1915 | } else | |
| 1916 | buv = (UV)-biv; | |
| 1917 | } | |
| 1918 | /* ?uvok if value is >= 0. basically, flagged as UV if it's +ve, | |
| 602f51c4 | 1919 | else "IV" now, independent of how it came in. |
| 7dca457a NC |
1920 | if a, b represents positive, A, B negative, a maps to -A etc |
| 1921 | a - b => (a - b) | |
| 1922 | A - b => -(a + b) | |
| 1923 | a - B => (a + b) | |
| 1924 | A - B => -(a - b) | |
| 1925 | all UV maths. negate result if A negative. | |
| 1926 | subtract if signs same, add if signs differ. */ | |
| 1927 | ||
| 1928 | if (auvok ^ buvok) { | |
| 1929 | /* Signs differ. */ | |
| 1930 | result = auv + buv; | |
| 1931 | if (result >= auv) | |
| 1932 | result_good = 1; | |
| 1933 | } else { | |
| 1934 | /* Signs same */ | |
| 1935 | if (auv >= buv) { | |
| 1936 | result = auv - buv; | |
| 1937 | /* Must get smaller */ | |
| 1938 | if (result <= auv) | |
| 1939 | result_good = 1; | |
| 1940 | } else { | |
| 1941 | result = buv - auv; | |
| 1942 | if (result <= buv) { | |
| 1943 | /* result really should be -(auv-buv). as its negation | |
| 1944 | of true value, need to swap our result flag */ | |
| 1945 | auvok = !auvok; | |
| 1946 | result_good = 1; | |
| 28e5dec8 | 1947 | } |
| 28e5dec8 JH |
1948 | } |
| 1949 | } | |
| 7dca457a NC |
1950 | if (result_good) { |
| 1951 | SP--; | |
| 1952 | if (auvok) | |
| 1953 | SETu( result ); | |
| 1954 | else { | |
| 1955 | /* Negate result */ | |
| 1956 | if (result <= (UV)IV_MIN) | |
| 1957 | SETi( -(IV)result ); | |
| 1958 | else { | |
| 1959 | /* result valid, but out of range for IV. */ | |
| 1960 | SETn( -(NV)result ); | |
| 1961 | } | |
| 1962 | } | |
| 1963 | RETURN; | |
| 1964 | } /* Overflow, drop through to NVs. */ | |
| 28e5dec8 JH |
1965 | } |
| 1966 | } | |
| 1967 | #endif | |
| a0d0e21e | 1968 | { |
| 6f1401dc | 1969 | NV value = SvNV_nomg(svr); |
| 4efa5a16 RD |
1970 | (void)POPs; |
| 1971 | ||
| 28e5dec8 JH |
1972 | if (!useleft) { |
| 1973 | /* left operand is undef, treat as zero - value */ | |
| 1974 | SETn(-value); | |
| 1975 | RETURN; | |
| 1976 | } | |
| 6f1401dc | 1977 | SETn( SvNV_nomg(svl) - value ); |
| 28e5dec8 | 1978 | RETURN; |
| 79072805 | 1979 | } |
| a0d0e21e | 1980 | } |
| 79072805 | 1981 | |
| a0d0e21e LW |
1982 | PP(pp_left_shift) |
| 1983 | { | |
| 6f1401dc | 1984 | dVAR; dSP; dATARGET; SV *svl, *svr; |
| a42d0242 | 1985 | tryAMAGICbin_MG(lshift_amg, AMGf_assign|AMGf_numeric); |
| 6f1401dc DM |
1986 | svr = POPs; |
| 1987 | svl = TOPs; | |
| a0d0e21e | 1988 | { |
| 6f1401dc | 1989 | const IV shift = SvIV_nomg(svr); |
| d0ba1bd2 | 1990 | if (PL_op->op_private & HINT_INTEGER) { |
| 6f1401dc | 1991 | const IV i = SvIV_nomg(svl); |
| 972b05a9 | 1992 | SETi(i << shift); |
| d0ba1bd2 JH |
1993 | } |
| 1994 | else { | |
| 6f1401dc | 1995 | const UV u = SvUV_nomg(svl); |
| 972b05a9 | 1996 | SETu(u << shift); |
| d0ba1bd2 | 1997 | } |
| 55497cff | 1998 | RETURN; |
| 79072805 | 1999 | } |
| a0d0e21e | 2000 | } |
| 79072805 | 2001 | |
| a0d0e21e LW |
2002 | PP(pp_right_shift) |
| 2003 | { | |
| 6f1401dc | 2004 | dVAR; dSP; dATARGET; SV *svl, *svr; |
| a42d0242 | 2005 | tryAMAGICbin_MG(rshift_amg, AMGf_assign|AMGf_numeric); |
| 6f1401dc DM |
2006 | svr = POPs; |
| 2007 | svl = TOPs; | |
| a0d0e21e | 2008 | { |
| 6f1401dc | 2009 | const IV shift = SvIV_nomg(svr); |
| d0ba1bd2 | 2010 | if (PL_op->op_private & HINT_INTEGER) { |
| 6f1401dc | 2011 | const IV i = SvIV_nomg(svl); |
| 972b05a9 | 2012 | SETi(i >> shift); |
| d0ba1bd2 JH |
2013 | } |
| 2014 | else { | |
| 6f1401dc | 2015 | const UV u = SvUV_nomg(svl); |
| 972b05a9 | 2016 | SETu(u >> shift); |
| d0ba1bd2 | 2017 | } |
| a0d0e21e | 2018 | RETURN; |
| 93a17b20 | 2019 | } |
| 79072805 LW |
2020 | } |
| 2021 | ||
| a0d0e21e | 2022 | PP(pp_lt) |
| 79072805 | 2023 | { |
| 6f1401dc | 2024 | dVAR; dSP; |
| 33efebe6 DM |
2025 | SV *left, *right; |
| 2026 | ||
| a42d0242 | 2027 | tryAMAGICbin_MG(lt_amg, AMGf_set|AMGf_numeric); |
| 33efebe6 DM |
2028 | right = POPs; |
| 2029 | left = TOPs; | |
| 2030 | SETs(boolSV( | |
| 2031 | (SvIOK_notUV(left) && SvIOK_notUV(right)) | |
| 2032 | ? (SvIVX(left) < SvIVX(right)) | |
| 2033 | : (do_ncmp(left, right) == -1) | |
| 2034 | )); | |
| 2035 | RETURN; | |
| a0d0e21e | 2036 | } |
| 79072805 | 2037 | |
| a0d0e21e LW |
2038 | PP(pp_gt) |
| 2039 | { | |
| 6f1401dc | 2040 | dVAR; dSP; |
| 33efebe6 | 2041 | SV *left, *right; |
| 1b6737cc | 2042 | |
| 33efebe6 DM |
2043 | tryAMAGICbin_MG(gt_amg, AMGf_set|AMGf_numeric); |
| 2044 | right = POPs; | |
| 2045 | left = TOPs; | |
| 2046 | SETs(boolSV( | |
| 2047 | (SvIOK_notUV(left) && SvIOK_notUV(right)) | |
| 2048 | ? (SvIVX(left) > SvIVX(right)) | |
| 2049 | : (do_ncmp(left, right) == 1) | |
| 2050 | )); | |
| 2051 | RETURN; | |
| a0d0e21e LW |
2052 | } |
| 2053 | ||
| 2054 | PP(pp_le) | |
| 2055 | { | |
| 6f1401dc | 2056 | dVAR; dSP; |
| 33efebe6 | 2057 | SV *left, *right; |
| 1b6737cc | 2058 | |
| 33efebe6 DM |
2059 | tryAMAGICbin_MG(le_amg, AMGf_set|AMGf_numeric); |
| 2060 | right = POPs; | |
| 2061 | left = TOPs; | |
| 2062 | SETs(boolSV( | |
| 2063 | (SvIOK_notUV(left) && SvIOK_notUV(right)) | |
| 2064 | ? (SvIVX(left) <= SvIVX(right)) | |
| 2065 | : (do_ncmp(left, right) <= 0) | |
| 2066 | )); | |
| 2067 | RETURN; | |
| a0d0e21e LW |
2068 | } |
| 2069 | ||
| 2070 | PP(pp_ge) | |
| 2071 | { | |
| 6f1401dc | 2072 | dVAR; dSP; |
| 33efebe6 DM |
2073 | SV *left, *right; |
| 2074 | ||
| 2075 | tryAMAGICbin_MG(ge_amg, AMGf_set|AMGf_numeric); | |
| 2076 | right = POPs; | |
| 2077 | left = TOPs; | |
| 2078 | SETs(boolSV( | |
| 2079 | (SvIOK_notUV(left) && SvIOK_notUV(right)) | |
| 2080 | ? (SvIVX(left) >= SvIVX(right)) | |
| 2081 | : ( (do_ncmp(left, right) & 2) == 0) | |
| 2082 | )); | |
| 2083 | RETURN; | |
| 2084 | } | |
| 1b6737cc | 2085 | |
| 33efebe6 DM |
2086 | PP(pp_ne) |
| 2087 | { | |
| 2088 | dVAR; dSP; | |
| 2089 | SV *left, *right; | |
| 2090 | ||
| 2091 | tryAMAGICbin_MG(ne_amg, AMGf_set|AMGf_numeric); | |
| 2092 | right = POPs; | |
| 2093 | left = TOPs; | |
| 2094 | SETs(boolSV( | |
| 2095 | (SvIOK_notUV(left) && SvIOK_notUV(right)) | |
| 2096 | ? (SvIVX(left) != SvIVX(right)) | |
| 2097 | : (do_ncmp(left, right) != 0) | |
| 2098 | )); | |
| 2099 | RETURN; | |
| 2100 | } | |
| 1b6737cc | 2101 | |
| 33efebe6 DM |
2102 | /* compare left and right SVs. Returns: |
| 2103 | * -1: < | |
| 2104 | * 0: == | |
| 2105 | * 1: > | |
| 2106 | * 2: left or right was a NaN | |
| 2107 | */ | |
| 2108 | I32 | |
| 2109 | Perl_do_ncmp(pTHX_ SV* const left, SV * const right) | |
| 2110 | { | |
| 2111 | dVAR; | |
| 1b6737cc | 2112 | |
| 33efebe6 DM |
2113 | PERL_ARGS_ASSERT_DO_NCMP; |
| 2114 | #ifdef PERL_PRESERVE_IVUV | |
| 2115 | SvIV_please_nomg(right); | |
| 2116 | /* Fortunately it seems NaN isn't IOK */ | |
| 2117 | if (SvIOK(right)) { | |
| 2118 | SvIV_please_nomg(left); | |
| 2119 | if (SvIOK(left)) { | |
| 2120 | if (!SvUOK(left)) { | |
| 2121 | const IV leftiv = SvIVX(left); | |
| 2122 | if (!SvUOK(right)) { | |
| 2123 | /* ## IV <=> IV ## */ | |
| 2124 | const IV rightiv = SvIVX(right); | |
| 2125 | return (leftiv > rightiv) - (leftiv < rightiv); | |
| 28e5dec8 | 2126 | } |
| 33efebe6 DM |
2127 | /* ## IV <=> UV ## */ |
| 2128 | if (leftiv < 0) | |
| 2129 | /* As (b) is a UV, it's >=0, so it must be < */ | |
| 2130 | return -1; | |
| 2131 | { | |
| 2132 | const UV rightuv = SvUVX(right); | |
| 2133 | return ((UV)leftiv > rightuv) - ((UV)leftiv < rightuv); | |
| 28e5dec8 | 2134 | } |
| 28e5dec8 | 2135 | } |
| 79072805 | 2136 | |
| 33efebe6 DM |
2137 | if (SvUOK(right)) { |
| 2138 | /* ## UV <=> UV ## */ | |
| 2139 | const UV leftuv = SvUVX(left); | |
| 2140 | const UV rightuv = SvUVX(right); | |
| 2141 | return (leftuv > rightuv) - (leftuv < rightuv); | |
| 28e5dec8 | 2142 | } |
| 33efebe6 DM |
2143 | /* ## UV <=> IV ## */ |
| 2144 | { | |
| 2145 | const IV rightiv = SvIVX(right); | |
| 2146 | if (rightiv < 0) | |
| 2147 | /* As (a) is a UV, it's >=0, so it cannot be < */ | |
| 2148 | return 1; | |
| 2149 | { | |
| 2150 | const UV leftuv = SvUVX(left); | |
| 2151 | return (leftuv > (UV)rightiv) - (leftuv < (UV)rightiv); | |
| 28e5dec8 | 2152 | } |
| 28e5dec8 | 2153 | } |
| 33efebe6 | 2154 | /* NOTREACHED */ |
| 28e5dec8 JH |
2155 | } |
| 2156 | } | |
| 2157 | #endif | |
| a0d0e21e | 2158 | { |
| 33efebe6 DM |
2159 | NV const rnv = SvNV_nomg(right); |
| 2160 | NV const lnv = SvNV_nomg(left); | |
| 2161 | ||
| cab190d4 | 2162 | #if defined(NAN_COMPARE_BROKEN) && defined(Perl_isnan) |
| 33efebe6 DM |
2163 | if (Perl_isnan(lnv) || Perl_isnan(rnv)) { |
| 2164 | return 2; | |
| 2165 | } | |
| 2166 | return (lnv > rnv) - (lnv < rnv); | |
| cab190d4 | 2167 | #else |
| 33efebe6 DM |
2168 | if (lnv < rnv) |
| 2169 | return -1; | |
| 2170 | if (lnv > rnv) | |
| 2171 | return 1; | |
| 2172 | if (lnv == rnv) | |
| 2173 | return 0; | |
| 2174 | return 2; | |
| cab190d4 | 2175 | #endif |
| a0d0e21e | 2176 | } |
| 79072805 LW |
2177 | } |
| 2178 | ||
| 33efebe6 | 2179 | |
| a0d0e21e | 2180 | PP(pp_ncmp) |
| 79072805 | 2181 | { |
| 33efebe6 DM |
2182 | dVAR; dSP; |
| 2183 | SV *left, *right; | |
| 2184 | I32 value; | |
| a42d0242 | 2185 | tryAMAGICbin_MG(ncmp_amg, AMGf_numeric); |
| 33efebe6 DM |
2186 | right = POPs; |
| 2187 | left = TOPs; | |
| 2188 | value = do_ncmp(left, right); | |
| 2189 | if (value == 2) { | |
| 3280af22 | 2190 | SETs(&PL_sv_undef); |
| 79072805 | 2191 | } |
| 33efebe6 DM |
2192 | else { |
| 2193 | dTARGET; | |
| 2194 | SETi(value); | |
| 2195 | } | |
| 2196 | RETURN; | |
| a0d0e21e | 2197 | } |
| 79072805 | 2198 | |
| afd9910b | 2199 | PP(pp_sle) |
| a0d0e21e | 2200 | { |
| 97aff369 | 2201 | dVAR; dSP; |
| 79072805 | 2202 | |
| afd9910b NC |
2203 | int amg_type = sle_amg; |
| 2204 | int multiplier = 1; | |
| 2205 | int rhs = 1; | |
| 79072805 | 2206 | |
| afd9910b NC |
2207 | switch (PL_op->op_type) { |
| 2208 | case OP_SLT: | |
| 2209 | amg_type = slt_amg; | |
| 2210 | /* cmp < 0 */ | |
| 2211 | rhs = 0; | |
| 2212 | break; | |
| 2213 | case OP_SGT: | |
| 2214 | amg_type = sgt_amg; | |
| 2215 | /* cmp > 0 */ | |
| 2216 | multiplier = -1; | |
| 2217 | rhs = 0; | |
| 2218 | break; | |
| 2219 | case OP_SGE: | |
| 2220 | amg_type = sge_amg; | |
| 2221 | /* cmp >= 0 */ | |
| 2222 | multiplier = -1; | |
| 2223 | break; | |
| 79072805 | 2224 | } |
| 79072805 | 2225 | |
| 6f1401dc | 2226 | tryAMAGICbin_MG(amg_type, AMGf_set); |
| a0d0e21e LW |
2227 | { |
| 2228 | dPOPTOPssrl; | |
| 1b6737cc | 2229 | const int cmp = (IN_LOCALE_RUNTIME |
| 078504b2 FC |
2230 | ? sv_cmp_locale_flags(left, right, 0) |
| 2231 | : sv_cmp_flags(left, right, 0)); | |
| afd9910b | 2232 | SETs(boolSV(cmp * multiplier < rhs)); |
| a0d0e21e LW |
2233 | RETURN; |
| 2234 | } | |
| 2235 | } | |
| 79072805 | 2236 | |
| 36477c24 | 2237 | PP(pp_seq) |
| 2238 | { | |
| 6f1401dc DM |
2239 | dVAR; dSP; |
| 2240 | tryAMAGICbin_MG(seq_amg, AMGf_set); | |
| 36477c24 | 2241 | { |
| 2242 | dPOPTOPssrl; | |
| 078504b2 | 2243 | SETs(boolSV(sv_eq_flags(left, right, 0))); |
| a0d0e21e LW |
2244 | RETURN; |
| 2245 | } | |
| 2246 | } | |
| 79072805 | 2247 | |
| a0d0e21e | 2248 | PP(pp_sne) |
| 79072805 | 2249 | { |
| 6f1401dc DM |
2250 | dVAR; dSP; |
| 2251 | tryAMAGICbin_MG(sne_amg, AMGf_set); | |
| a0d0e21e LW |
2252 | { |
| 2253 | dPOPTOPssrl; | |
| 078504b2 | 2254 | SETs(boolSV(!sv_eq_flags(left, right, 0))); |
| a0d0e21e | 2255 | RETURN; |
| 463ee0b2 | 2256 | } |
| 79072805 LW |
2257 | } |
| 2258 | ||
| a0d0e21e | 2259 | PP(pp_scmp) |
| 79072805 | 2260 | { |
| 6f1401dc DM |
2261 | dVAR; dSP; dTARGET; |
| 2262 | tryAMAGICbin_MG(scmp_amg, 0); | |
| a0d0e21e LW |
2263 | { |
| 2264 | dPOPTOPssrl; | |
| 1b6737cc | 2265 | const int cmp = (IN_LOCALE_RUNTIME |
| 078504b2 FC |
2266 | ? sv_cmp_locale_flags(left, right, 0) |
| 2267 | : sv_cmp_flags(left, right, 0)); | |
| bbce6d69 | 2268 | SETi( cmp ); |
| a0d0e21e LW |
2269 | RETURN; |
| 2270 | } | |
| 2271 | } | |
| 79072805 | 2272 | |
| 55497cff | 2273 | PP(pp_bit_and) |
| 2274 | { | |
| 6f1401dc DM |
2275 | dVAR; dSP; dATARGET; |
| 2276 | tryAMAGICbin_MG(band_amg, AMGf_assign); | |
| a0d0e21e LW |
2277 | { |
| 2278 | dPOPTOPssrl; | |
| 4633a7c4 | 2279 | if (SvNIOKp(left) || SvNIOKp(right)) { |
| b20c4ee1 FC |
2280 | const bool left_ro_nonnum = !SvNIOKp(left) && SvREADONLY(left); |
| 2281 | const bool right_ro_nonnum = !SvNIOKp(right) && SvREADONLY(right); | |
| d0ba1bd2 | 2282 | if (PL_op->op_private & HINT_INTEGER) { |
| 1b6737cc | 2283 | const IV i = SvIV_nomg(left) & SvIV_nomg(right); |
| 972b05a9 | 2284 | SETi(i); |
| d0ba1bd2 JH |
2285 | } |
| 2286 | else { | |
| 1b6737cc | 2287 | const UV u = SvUV_nomg(left) & SvUV_nomg(right); |
| 972b05a9 | 2288 | SETu(u); |
| d0ba1bd2 | 2289 | } |
| b20c4ee1 FC |
2290 | if (left_ro_nonnum) SvNIOK_off(left); |
| 2291 | if (right_ro_nonnum) SvNIOK_off(right); | |
| a0d0e21e LW |
2292 | } |
| 2293 | else { | |
| 533c011a | 2294 | do_vop(PL_op->op_type, TARG, left, right); |
| a0d0e21e LW |
2295 | SETTARG; |
| 2296 | } | |
| 2297 | RETURN; | |
| 2298 | } | |
| 2299 | } | |
| 79072805 | 2300 | |
| a0d0e21e LW |
2301 | PP(pp_bit_or) |
| 2302 | { | |
| 3658c1f1 NC |
2303 | dVAR; dSP; dATARGET; |
| 2304 | const int op_type = PL_op->op_type; | |
| 2305 | ||
| 6f1401dc | 2306 | tryAMAGICbin_MG((op_type == OP_BIT_OR ? bor_amg : bxor_amg), AMGf_assign); |
| a0d0e21e LW |
2307 | { |
| 2308 | dPOPTOPssrl; | |
| 4633a7c4 | 2309 | if (SvNIOKp(left) || SvNIOKp(right)) { |
| b20c4ee1 FC |
2310 | const bool left_ro_nonnum = !SvNIOKp(left) && SvREADONLY(left); |
| 2311 | const bool right_ro_nonnum = !SvNIOKp(right) && SvREADONLY(right); | |
| d0ba1bd2 | 2312 | if (PL_op->op_private & HINT_INTEGER) { |
| 3658c1f1 NC |
2313 | const IV l = (USE_LEFT(left) ? SvIV_nomg(left) : 0); |
| 2314 | const IV r = SvIV_nomg(right); | |
| 2315 | const IV result = op_type == OP_BIT_OR ? (l | r) : (l ^ r); | |
| 2316 | SETi(result); | |
| d0ba1bd2 JH |
2317 | } |
| 2318 | else { | |
| 3658c1f1 NC |
2319 | const UV l = (USE_LEFT(left) ? SvUV_nomg(left) : 0); |
| 2320 | const UV r = SvUV_nomg(right); | |
| 2321 | const UV result = op_type == OP_BIT_OR ? (l | r) : (l ^ r); | |
| 2322 | SETu(result); | |
| d0ba1bd2 | 2323 | } |
| b20c4ee1 FC |
2324 | if (left_ro_nonnum) SvNIOK_off(left); |
| 2325 | if (right_ro_nonnum) SvNIOK_off(right); | |
| a0d0e21e LW |
2326 | } |
| 2327 | else { | |
| 3658c1f1 | 2328 | do_vop(op_type, TARG, left, right); |
| a0d0e21e LW |
2329 | SETTARG; |
| 2330 | } | |
| 2331 | RETURN; | |
| 79072805 | 2332 | } |
| a0d0e21e | 2333 | } |
| 79072805 | 2334 | |
| a0d0e21e LW |
2335 | PP(pp_negate) |
| 2336 | { | |
| 6f1401dc DM |
2337 | dVAR; dSP; dTARGET; |
| 2338 | tryAMAGICun_MG(neg_amg, AMGf_numeric); | |
| a0d0e21e | 2339 | { |
| 6f1401dc | 2340 | SV * const sv = TOPs; |
| 1b6737cc | 2341 | const int flags = SvFLAGS(sv); |
| a5b92898 | 2342 | |
| 886a4465 | 2343 | if( !SvNIOK( sv ) && looks_like_number( sv ) ){ |
| a5b92898 RB |
2344 | SvIV_please( sv ); |
| 2345 | } | |
| 2346 | ||
| 28e5dec8 JH |
2347 | if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) { |
| 2348 | /* It's publicly an integer, or privately an integer-not-float */ | |
| 2349 | oops_its_an_int: | |
| 9b0e499b GS |
2350 | if (SvIsUV(sv)) { |
| 2351 | if (SvIVX(sv) == IV_MIN) { | |
| 28e5dec8 | 2352 | /* 2s complement assumption. */ |
| 9b0e499b GS |
2353 | SETi(SvIVX(sv)); /* special case: -((UV)IV_MAX+1) == IV_MIN */ |
| 2354 | RETURN; | |
| 2355 | } | |
| 2356 | else if (SvUVX(sv) <= IV_MAX) { | |
| beccb14c | 2357 | SETi(-SvIVX(sv)); |
| 9b0e499b GS |
2358 | RETURN; |
| 2359 | } | |
| 2360 | } | |
| 2361 | else if (SvIVX(sv) != IV_MIN) { | |
| 2362 | SETi(-SvIVX(sv)); | |
| 2363 | RETURN; | |
| 2364 | } | |
| 28e5dec8 JH |
2365 | #ifdef PERL_PRESERVE_IVUV |
| 2366 | else { | |
| 2367 | SETu((UV)IV_MIN); | |
| 2368 | RETURN; | |
| 2369 | } | |
| 2370 | #endif | |
| 9b0e499b GS |
2371 | } |
| 2372 | if (SvNIOKp(sv)) | |
| 6f1401dc | 2373 | SETn(-SvNV_nomg(sv)); |
| 4633a7c4 | 2374 | else if (SvPOKp(sv)) { |
| a0d0e21e | 2375 | STRLEN len; |
| 6f1401dc | 2376 | const char * const s = SvPV_nomg_const(sv, len); |
| bbce6d69 | 2377 | if (isIDFIRST(*s)) { |
| 76f68e9b | 2378 | sv_setpvs(TARG, "-"); |
| a0d0e21e | 2379 | sv_catsv(TARG, sv); |
| 79072805 | 2380 | } |
| a0d0e21e | 2381 | else if (*s == '+' || *s == '-') { |
| 6f1401dc DM |
2382 | sv_setsv_nomg(TARG, sv); |
| 2383 | *SvPV_force_nomg(TARG, len) = *s == '-' ? '+' : '-'; | |
| 79072805 | 2384 | } |
| 8eb28a70 | 2385 | else if (DO_UTF8(sv)) { |
| 6f1401dc | 2386 | SvIV_please_nomg(sv); |
| 8eb28a70 JH |
2387 | if (SvIOK(sv)) |
| 2388 | goto oops_its_an_int; | |
| 2389 | if (SvNOK(sv)) | |
| 6f1401dc | 2390 | sv_setnv(TARG, -SvNV_nomg(sv)); |
| 8eb28a70 | 2391 | else { |
| 76f68e9b | 2392 | sv_setpvs(TARG, "-"); |
| 8eb28a70 JH |
2393 | sv_catsv(TARG, sv); |
| 2394 | } | |
| 834a4ddd | 2395 | } |
| 28e5dec8 | 2396 | else { |
| 6f1401dc | 2397 | SvIV_please_nomg(sv); |
| 8eb28a70 JH |
2398 | if (SvIOK(sv)) |
| 2399 | goto oops_its_an_int; | |
| 6f1401dc | 2400 | sv_setnv(TARG, -SvNV_nomg(sv)); |
| 28e5dec8 | 2401 | } |
| a0d0e21e | 2402 | SETTARG; |
| 79072805 | 2403 | } |
| 4633a7c4 | 2404 | else |
| 6f1401dc | 2405 | SETn(-SvNV_nomg(sv)); |
| 79072805 | 2406 | } |
| a0d0e21e | 2407 | RETURN; |
| 79072805 LW |
2408 | } |
| 2409 | ||
| a0d0e21e | 2410 | PP(pp_not) |
| 79072805 | 2411 | { |
| 6f1401dc DM |
2412 | dVAR; dSP; |
| 2413 | tryAMAGICun_MG(not_amg, AMGf_set); | |
| 06c841cf | 2414 | *PL_stack_sp = boolSV(!SvTRUE_nomg(*PL_stack_sp)); |
| a0d0e21e | 2415 | return NORMAL; |
| 79072805 LW |
2416 | } |
| 2417 | ||
| a0d0e21e | 2418 | PP(pp_complement) |
| 79072805 | 2419 | { |
| 6f1401dc | 2420 | dVAR; dSP; dTARGET; |
| a42d0242 | 2421 | tryAMAGICun_MG(compl_amg, AMGf_numeric); |
| a0d0e21e LW |
2422 | { |
| 2423 | dTOPss; | |
| 4633a7c4 | 2424 | if (SvNIOKp(sv)) { |
| d0ba1bd2 | 2425 | if (PL_op->op_private & HINT_INTEGER) { |
| 1b6737cc | 2426 | const IV i = ~SvIV_nomg(sv); |
| 972b05a9 | 2427 | SETi(i); |
| d0ba1bd2 JH |
2428 | } |
| 2429 | else { | |
| 1b6737cc | 2430 | const UV u = ~SvUV_nomg(sv); |
| 972b05a9 | 2431 | SETu(u); |
| d0ba1bd2 | 2432 | } |
| a0d0e21e LW |
2433 | } |
| 2434 | else { | |
| 51723571 | 2435 | register U8 *tmps; |
| 55497cff | 2436 | register I32 anum; |
| a0d0e21e LW |
2437 | STRLEN len; |
| 2438 | ||
| 10516c54 | 2439 | (void)SvPV_nomg_const(sv,len); /* force check for uninit var */ |
| 891f9566 | 2440 | sv_setsv_nomg(TARG, sv); |
| 6f1401dc | 2441 | tmps = (U8*)SvPV_force_nomg(TARG, len); |
| a0d0e21e | 2442 | anum = len; |
| 1d68d6cd | 2443 | if (SvUTF8(TARG)) { |
| a1ca4561 | 2444 | /* Calculate exact length, let's not estimate. */ |
| 1d68d6cd | 2445 | STRLEN targlen = 0; |
| ba210ebe | 2446 | STRLEN l; |
| a1ca4561 YST |
2447 | UV nchar = 0; |
| 2448 | UV nwide = 0; | |
| 01f6e806 | 2449 | U8 * const send = tmps + len; |
| 74d49cd0 TS |
2450 | U8 * const origtmps = tmps; |
| 2451 | const UV utf8flags = UTF8_ALLOW_ANYUV; | |
| 1d68d6cd | 2452 | |
| 1d68d6cd | 2453 | while (tmps < send) { |
| 74d49cd0 TS |
2454 | const UV c = utf8n_to_uvchr(tmps, send-tmps, &l, utf8flags); |
| 2455 | tmps += l; | |
| 5bbb0b5a | 2456 | targlen += UNISKIP(~c); |
| a1ca4561 YST |
2457 | nchar++; |
| 2458 | if (c > 0xff) | |
| 2459 | nwide++; | |
| 1d68d6cd SC |
2460 | } |
| 2461 | ||
| 2462 | /* Now rewind strings and write them. */ | |
| 74d49cd0 | 2463 | tmps = origtmps; |
| a1ca4561 YST |
2464 | |
| 2465 | if (nwide) { | |
| 01f6e806 AL |
2466 | U8 *result; |
| 2467 | U8 *p; | |
| 2468 | ||
| 74d49cd0 | 2469 | Newx(result, targlen + 1, U8); |
| 01f6e806 | 2470 | p = result; |
| a1ca4561 | 2471 | while (tmps < send) { |
| 74d49cd0 TS |
2472 | const UV c = utf8n_to_uvchr(tmps, send-tmps, &l, utf8flags); |
| 2473 | tmps += l; | |
| 01f6e806 | 2474 | p = uvchr_to_utf8_flags(p, ~c, UNICODE_ALLOW_ANY); |
| a1ca4561 | 2475 | } |
| 01f6e806 | 2476 | *p = '\0'; |
| c1c21316 NC |
2477 | sv_usepvn_flags(TARG, (char*)result, targlen, |
| 2478 | SV_HAS_TRAILING_NUL); | |
| a1ca4561 YST |
2479 | SvUTF8_on(TARG); |
| 2480 | } | |
| 2481 | else { | |
| 01f6e806 AL |
2482 | U8 *result; |
| 2483 | U8 *p; | |
| 2484 | ||
| 74d49cd0 | 2485 | Newx(result, nchar + 1, U8); |
| 01f6e806 | 2486 | p = result; |
| a1ca4561 | 2487 | while (tmps < send) { |
| 74d49cd0 TS |
2488 | const U8 c = (U8)utf8n_to_uvchr(tmps, send-tmps, &l, utf8flags); |
| 2489 | tmps += l; | |
| 01f6e806 | 2490 | *p++ = ~c; |
| a1ca4561 | 2491 | } |
| 01f6e806 | 2492 | *p = '\0'; |
| c1c21316 | 2493 | sv_usepvn_flags(TARG, (char*)result, nchar, SV_HAS_TRAILING_NUL); |
| d0a21e00 | 2494 | SvUTF8_off(TARG); |
| 1d68d6cd | 2495 | } |
| ec93b65f | 2496 | SETTARG; |
| 1d68d6cd SC |
2497 | RETURN; |
| 2498 | } | |
| a0d0e21e | 2499 | #ifdef LIBERAL |
| 51723571 JH |
2500 | { |
| 2501 | register long *tmpl; | |
| 2502 | for ( ; anum && (unsigned long)tmps % sizeof(long); anum--, tmps++) | |
| 2503 | *tmps = ~*tmps; | |
| 2504 | tmpl = (long*)tmps; | |
| bb7a0f54 | 2505 | for ( ; anum >= (I32)sizeof(long); anum -= (I32)sizeof(long), tmpl++) |
| 51723571 JH |
2506 | *tmpl = ~*tmpl; |
| 2507 | tmps = (U8*)tmpl; | |
| 2508 | } | |
| a0d0e21e LW |
2509 | #endif |
| 2510 | for ( ; anum > 0; anum--, tmps++) | |
| 2511 | *tmps = ~*tmps; | |
| ec93b65f | 2512 | SETTARG; |
| a0d0e21e LW |
2513 | } |
| 2514 | RETURN; | |
| 2515 | } | |
| 79072805 LW |
2516 | } |
| 2517 | ||
| a0d0e21e LW |
2518 | /* integer versions of some of the above */ |
| 2519 | ||
| a0d0e21e | 2520 | PP(pp_i_multiply) |
| 79072805 | 2521 | { |
| 6f1401dc DM |
2522 | dVAR; dSP; dATARGET; |
| 2523 | tryAMAGICbin_MG(mult_amg, AMGf_assign); | |
| a0d0e21e | 2524 | { |
| 6f1401dc | 2525 | dPOPTOPiirl_nomg; |
| a0d0e21e LW |
2526 | SETi( left * right ); |
| 2527 | RETURN; | |
| 2528 | } | |
| 79072805 LW |
2529 | } |
| 2530 | ||
| a0d0e21e | 2531 | PP(pp_i_divide) |
| 79072805 | 2532 | { |
| 85935d8e | 2533 | IV num; |
| 6f1401dc DM |
2534 | dVAR; dSP; dATARGET; |
| 2535 | tryAMAGICbin_MG(div_amg, AMGf_assign); | |
| a0d0e21e | 2536 | { |
| 6f1401dc | 2537 | dPOPTOPssrl; |
| 85935d8e | 2538 | IV value = SvIV_nomg(right); |
| a0d0e21e | 2539 | if (value == 0) |
| ece1bcef | 2540 | DIE(aTHX_ "Illegal division by zero"); |
| 85935d8e | 2541 | num = SvIV_nomg(left); |
| a0cec769 YST |
2542 | |
| 2543 | /* avoid FPE_INTOVF on some platforms when num is IV_MIN */ | |
| 2544 | if (value == -1) | |
| 2545 | value = - num; | |
| 2546 | else | |
| 2547 | value = num / value; | |
| 6f1401dc | 2548 | SETi(value); |
| a0d0e21e LW |
2549 | RETURN; |
| 2550 | } | |
| 79072805 LW |
2551 | } |
| 2552 | ||
| befad5d1 | 2553 | #if defined(__GLIBC__) && IVSIZE == 8 |
| 224ec323 JH |
2554 | STATIC |
| 2555 | PP(pp_i_modulo_0) | |
| befad5d1 NC |
2556 | #else |
| 2557 | PP(pp_i_modulo) | |
| 2558 | #endif | |
| 224ec323 JH |
2559 | { |
| 2560 | /* This is the vanilla old i_modulo. */ | |
| 6f1401dc DM |
2561 | dVAR; dSP; dATARGET; |
| 2562 | tryAMAGICbin_MG(modulo_amg, AMGf_assign); | |
| 224ec323 | 2563 | { |
| 6f1401dc | 2564 | dPOPTOPiirl_nomg; |
| 224ec323 JH |
2565 | if (!right) |
| 2566 | DIE(aTHX_ "Illegal modulus zero"); | |
| a0cec769 YST |
2567 | /* avoid FPE_INTOVF on some platforms when left is IV_MIN */ |
| 2568 | if (right == -1) | |
| 2569 | SETi( 0 ); | |
| 2570 | else | |
| 2571 | SETi( left % right ); | |
| 224ec323 JH |
2572 | RETURN; |
| 2573 | } | |
| 2574 | } | |
| 2575 | ||
| 11010fa3 | 2576 | #if defined(__GLIBC__) && IVSIZE == 8 |
| 224ec323 JH |
2577 | STATIC |
| 2578 | PP(pp_i_modulo_1) | |
| befad5d1 | 2579 | |
| 224ec323 | 2580 | { |
| 224ec323 | 2581 | /* This is the i_modulo with the workaround for the _moddi3 bug |
| fce2b89e | 2582 | * in (at least) glibc 2.2.5 (the PERL_ABS() the workaround). |
| 224ec323 | 2583 | * See below for pp_i_modulo. */ |
| 6f1401dc DM |
2584 | dVAR; dSP; dATARGET; |
| 2585 | tryAMAGICbin_MG(modulo_amg, AMGf_assign); | |
| 224ec323 | 2586 | { |
| 6f1401dc | 2587 | dPOPTOPiirl_nomg; |
| 224ec323 JH |
2588 | if (!right) |
| 2589 | DIE(aTHX_ "Illegal modulus zero"); | |
| a0cec769 YST |
2590 | /* avoid FPE_INTOVF on some platforms when left is IV_MIN */ |
| 2591 | if (right == -1) | |
| 2592 | SETi( 0 ); | |
| 2593 | else | |
| 2594 | SETi( left % PERL_ABS(right) ); | |
| 224ec323 JH |
2595 | RETURN; |
| 2596 | } | |
| 224ec323 JH |
2597 | } |
| 2598 | ||
| a0d0e21e | 2599 | PP(pp_i_modulo) |
| 79072805 | 2600 | { |
| 6f1401dc DM |
2601 | dVAR; dSP; dATARGET; |
| 2602 | tryAMAGICbin_MG(modulo_amg, AMGf_assign); | |
| 224ec323 | 2603 | { |
| 6f1401dc | 2604 | dPOPTOPiirl_nomg; |
| 224ec323 JH |
2605 | if (!right) |
| 2606 | DIE(aTHX_ "Illegal modulus zero"); | |
| 2607 | /* The assumption is to use hereafter the old vanilla version... */ | |
| 2608 | PL_op->op_ppaddr = | |
| 2609 | PL_ppaddr[OP_I_MODULO] = | |
| 1c127fab | 2610 | Perl_pp_i_modulo_0; |
| 224ec323 JH |
2611 | /* .. but if we have glibc, we might have a buggy _moddi3 |
| 2612 | * (at least glicb 2.2.5 is known to have this bug), in other | |
| 2613 | * words our integer modulus with negative quad as the second | |
| 2614 | * argument might be broken. Test for this and re-patch the | |
| 2615 | * opcode dispatch table if that is the case, remembering to | |
| 2616 | * also apply the workaround so that this first round works | |
| 2617 | * right, too. See [perl #9402] for more information. */ | |
| 224ec323 JH |
2618 | { |
| 2619 | IV l = 3; | |
| 2620 | IV r = -10; | |
| 2621 | /* Cannot do this check with inlined IV constants since | |
| 2622 | * that seems to work correctly even with the buggy glibc. */ | |
| 2623 | if (l % r == -3) { | |
| 2624 | /* Yikes, we have the bug. | |
| 2625 | * Patch in the workaround version. */ | |
| 2626 | PL_op->op_ppaddr = | |
| 2627 | PL_ppaddr[OP_I_MODULO] = | |
| 2628 | &Perl_pp_i_modulo_1; | |
| 2629 | /* Make certain we work right this time, too. */ | |
| 32fdb065 | 2630 | right = PERL_ABS(right); |
| 224ec323 JH |
2631 | } |
| 2632 | } | |
| a0cec769 YST |
2633 | /* avoid FPE_INTOVF on some platforms when left is IV_MIN */ |
| 2634 | if (right == -1) | |
| 2635 | SETi( 0 ); | |
| 2636 | else | |
| 2637 | SETi( left % right ); | |
| 224ec323 JH |
2638 | RETURN; |
| 2639 | } | |
| 79072805 | 2640 | } |
| befad5d1 | 2641 | #endif |
| 79072805 | 2642 | |
| a0d0e21e | 2643 | PP(pp_i_add) |
| 79072805 | 2644 | { |
| 6f1401dc DM |
2645 | dVAR; dSP; dATARGET; |
| 2646 | tryAMAGICbin_MG(add_amg, AMGf_assign); | |
| a0d0e21e | 2647 | { |
| 6f1401dc | 2648 | dPOPTOPiirl_ul_nomg; |
| a0d0e21e LW |
2649 | SETi( left + right ); |
| 2650 | RETURN; | |
| 79072805 | 2651 | } |
| 79072805 LW |
2652 | } |
| 2653 | ||
| a0d0e21e | 2654 | PP(pp_i_subtract) |
| 79072805 | 2655 | { |
| 6f1401dc DM |
2656 | dVAR; dSP; dATARGET; |
| 2657 | tryAMAGICbin_MG(subtr_amg, AMGf_assign); | |
| a0d0e21e | 2658 | { |
| 6f1401dc | 2659 | dPOPTOPiirl_ul_nomg; |
| a0d0e21e LW |
2660 | SETi( left - right ); |
| 2661 | RETURN; | |
| 79072805 | 2662 | } |
| 79072805 LW |
2663 | } |
| 2664 | ||
| a0d0e21e | 2665 | PP(pp_i_lt) |
| 79072805 | 2666 | { |
| 6f1401dc DM |
2667 | dVAR; dSP; |
| 2668 | tryAMAGICbin_MG(lt_amg, AMGf_set); | |
| a0d0e21e | 2669 | { |
| 96b6b87f | 2670 | dPOPTOPiirl_nomg; |
| 54310121 | 2671 | SETs(boolSV(left < right)); |
| a0d0e21e LW |
2672 | RETURN; |
| 2673 | } | |
| 79072805 LW |
2674 | } |
| 2675 | ||
| a0d0e21e | 2676 | PP(pp_i_gt) |
| 79072805 | 2677 | { |
| 6f1401dc DM |
2678 | dVAR; dSP; |
| 2679 | tryAMAGICbin_MG(gt_amg, AMGf_set); | |
| a0d0e21e | 2680 | { |
| 96b6b87f | 2681 | dPOPTOPiirl_nomg; |
| 54310121 | 2682 | SETs(boolSV(left > right)); |
| a0d0e21e LW |
2683 | RETURN; |
| 2684 | } | |
| 79072805 LW |
2685 | } |
| 2686 | ||
| a0d0e21e | 2687 | PP(pp_i_le) |
| 79072805 | 2688 | { |
| 6f1401dc DM |
2689 | dVAR; dSP; |
| 2690 | tryAMAGICbin_MG(le_amg, AMGf_set); | |
| a0d0e21e | 2691 | { |
| 96b6b87f | 2692 | dPOPTOPiirl_nomg; |
| 54310121 | 2693 | SETs(boolSV(left <= right)); |
| a0d0e21e | 2694 | RETURN; |
| 85e6fe83 | 2695 | } |
| 79072805 LW |
2696 | } |
| 2697 | ||
| a0d0e21e | 2698 | PP(pp_i_ge) |
| 79072805 | 2699 | { |
| 6f1401dc DM |
2700 | dVAR; dSP; |
| 2701 | tryAMAGICbin_MG(ge_amg, AMGf_set); | |
| a0d0e21e | 2702 | { |
| 96b6b87f | 2703 | dPOPTOPiirl_nomg; |
| 54310121 | 2704 | SETs(boolSV(left >= right)); |
| a0d0e21e LW |
2705 | RETURN; |
| 2706 | } | |
| 79072805 LW |
2707 | } |
| 2708 | ||
| a0d0e21e | 2709 | PP(pp_i_eq) |
| 79072805 | 2710 | { |
| 6f1401dc DM |
2711 | dVAR; dSP; |
| 2712 | tryAMAGICbin_MG(eq_amg, AMGf_set); | |
| a0d0e21e | 2713 | { |
| 96b6b87f | 2714 | dPOPTOPiirl_nomg; |
| 54310121 | 2715 | SETs(boolSV(left == right)); |
| a0d0e21e LW |
2716 | RETURN; |
| 2717 | } | |
| 79072805 LW |
2718 | } |
| 2719 | ||
| a0d0e21e | 2720 | PP(pp_i_ne) |
| 79072805 | 2721 | { |
| 6f1401dc DM |
2722 | dVAR; dSP; |
| 2723 | tryAMAGICbin_MG(ne_amg, AMGf_set); | |
| a0d0e21e | 2724 | { |
| 96b6b87f | 2725 | dPOPTOPiirl_nomg; |
| 54310121 | 2726 | SETs(boolSV(left != right)); |
| a0d0e21e LW |
2727 | RETURN; |
| 2728 | } | |
| 79072805 LW |
2729 | } |
| 2730 | ||
| a0d0e21e | 2731 | PP(pp_i_ncmp) |
| 79072805 | 2732 | { |
| 6f1401dc DM |
2733 | dVAR; dSP; dTARGET; |
| 2734 | tryAMAGICbin_MG(ncmp_amg, 0); | |
| a0d0e21e | 2735 | { |
| 96b6b87f | 2736 | dPOPTOPiirl_nomg; |
| a0d0e21e | 2737 | I32 value; |
| 79072805 | 2738 | |
| a0d0e21e | 2739 | if (left > right) |
| 79072805 | 2740 | value = 1; |
| a0d0e21e | 2741 | else if (left < right) |
| 79072805 | 2742 | value = -1; |
| a0d0e21e | 2743 | else |
| 79072805 | 2744 | value = 0; |
| a0d0e21e LW |
2745 | SETi(value); |
| 2746 | RETURN; | |
| 79072805 | 2747 | } |
| 85e6fe83 LW |
2748 | } |
| 2749 | ||
| 2750 | PP(pp_i_negate) | |
| 2751 | { | |
| 6f1401dc DM |
2752 | dVAR; dSP; dTARGET; |
| 2753 | tryAMAGICun_MG(neg_amg, 0); | |
| 2754 | { | |
| 2755 | SV * const sv = TOPs; | |
| 2756 | IV const i = SvIV_nomg(sv); | |
| 2757 | SETi(-i); | |
| 2758 | RETURN; | |
| 2759 | } | |
| 85e6fe83 LW |
2760 | } |
| 2761 | ||
| 79072805 LW |
2762 | /* High falutin' math. */ |
| 2763 | ||
| 2764 | PP(pp_atan2) | |
| 2765 | { | |
| 6f1401dc DM |
2766 | dVAR; dSP; dTARGET; |
| 2767 | tryAMAGICbin_MG(atan2_amg, 0); | |
| a0d0e21e | 2768 | { |
| 096c060c | 2769 | dPOPTOPnnrl_nomg; |
| a1021d57 | 2770 | SETn(Perl_atan2(left, right)); |
| a0d0e21e LW |
2771 | RETURN; |
| 2772 | } | |
| 79072805 LW |
2773 | } |
| 2774 | ||
| 2775 | PP(pp_sin) | |
| 2776 | { | |
| 71302fe3 NC |
2777 | dVAR; dSP; dTARGET; |
| 2778 | int amg_type = sin_amg; | |
| 2779 | const char *neg_report = NULL; | |
| bc81784a | 2780 | NV (*func)(NV) = Perl_sin; |
| 71302fe3 NC |
2781 | const int op_type = PL_op->op_type; |
| 2782 | ||
| 2783 | switch (op_type) { | |
| 2784 | case OP_COS: | |
| 2785 | amg_type = cos_amg; | |
| bc81784a | 2786 | func = Perl_cos; |
| 71302fe3 NC |
2787 | break; |
| 2788 | case OP_EXP: | |
| 2789 | amg_type = exp_amg; | |
| bc81784a | 2790 | func = Perl_exp; |
| 71302fe3 NC |
2791 | break; |
| 2792 | case OP_LOG: | |
| 2793 | amg_type = log_amg; | |
| bc81784a | 2794 | func = Perl_log; |
| 71302fe3 NC |
2795 | neg_report = "log"; |
| 2796 | break; | |
| 2797 | case OP_SQRT: | |
| 2798 | amg_type = sqrt_amg; | |
| bc81784a | 2799 | func = Perl_sqrt; |
| 71302fe3 NC |
2800 | neg_report = "sqrt"; |
| 2801 | break; | |
| a0d0e21e | 2802 | } |
| 79072805 | 2803 | |
| 6f1401dc DM |
2804 | |
| 2805 | tryAMAGICun_MG(amg_type, 0); | |
| a0d0e21e | 2806 | { |
| 6f1401dc DM |
2807 | SV * const arg = POPs; |
| 2808 | const NV value = SvNV_nomg(arg); | |
| 71302fe3 NC |
2809 | if (neg_report) { |
| 2810 | if (op_type == OP_LOG ? (value <= 0.0) : (value < 0.0)) { | |
| 2811 | SET_NUMERIC_STANDARD(); | |
| 2812 | DIE(aTHX_ "Can't take %s of %"NVgf, neg_report, value); | |
| 2813 | } | |
| 2814 | } | |
| 2815 | XPUSHn(func(value)); | |
| a0d0e21e LW |
2816 | RETURN; |
| 2817 | } | |
| 79072805 LW |
2818 | } |
| 2819 | ||
| 56cb0a1c AD |
2820 | /* Support Configure command-line overrides for rand() functions. |
| 2821 | After 5.005, perhaps we should replace this by Configure support | |
| 2822 | for drand48(), random(), or rand(). For 5.005, though, maintain | |
| 2823 | compatibility by calling rand() but allow the user to override it. | |
| 2824 | See INSTALL for details. --Andy Dougherty 15 July 1998 | |
| 2825 | */ | |
| 85ab1d1d JH |
2826 | /* Now it's after 5.005, and Configure supports drand48() and random(), |
| 2827 | in addition to rand(). So the overrides should not be needed any more. | |
| 2828 | --Jarkko Hietaniemi 27 September 1998 | |
| 2829 | */ | |
| 2830 | ||
| 2831 | #ifndef HAS_DRAND48_PROTO | |
| 20ce7b12 | 2832 | extern double drand48 (void); |
| 56cb0a1c AD |
2833 | #endif |
| 2834 | ||
| 79072805 LW |
2835 | PP(pp_rand) |
| 2836 | { | |
| 97aff369 | 2837 | dVAR; dSP; dTARGET; |
| 65202027 | 2838 | NV value; |
| 79072805 LW |
2839 | if (MAXARG < 1) |
| 2840 | value = 1.0; | |
| 2841 | else | |
| 2842 | value = POPn; | |
| 2843 | if (value == 0.0) | |
| 2844 | value = 1.0; | |
| 80252599 | 2845 | if (!PL_srand_called) { |
| 85ab1d1d | 2846 | (void)seedDrand01((Rand_seed_t)seed()); |
| 80252599 | 2847 | PL_srand_called = TRUE; |
| 93dc8474 | 2848 | } |
| 85ab1d1d | 2849 | value *= Drand01(); |
| 79072805 LW |
2850 | XPUSHn(value); |
| 2851 | RETURN; | |
| 2852 | } | |
| 2853 | ||
| 2854 | PP(pp_srand) | |
| 2855 | { | |
| 83832992 | 2856 | dVAR; dSP; dTARGET; |
| 0bd48802 | 2857 | const UV anum = (MAXARG < 1) ? seed() : POPu; |
| 85ab1d1d | 2858 | (void)seedDrand01((Rand_seed_t)anum); |
| 80252599 | 2859 | PL_srand_called = TRUE; |
| da1010ec NC |
2860 | if (anum) |
| 2861 | XPUSHu(anum); | |
| 2862 | else { | |
| 2863 | /* Historically srand always returned true. We can avoid breaking | |
| 2864 | that like this: */ | |
| 2865 | sv_setpvs(TARG, "0 but true"); | |
| 2866 | XPUSHTARG; | |
| 2867 | } | |
| 83832992 | 2868 | RETURN; |
| 79072805 LW |
2869 | } |
| 2870 | ||
| 79072805 LW |
2871 | PP(pp_int) |
| 2872 | { | |
| 6f1401dc DM |
2873 | dVAR; dSP; dTARGET; |
| 2874 | tryAMAGICun_MG(int_amg, AMGf_numeric); | |
| 774d564b | 2875 | { |
| 6f1401dc DM |
2876 | SV * const sv = TOPs; |
| 2877 | const IV iv = SvIV_nomg(sv); | |
| 28e5dec8 JH |
2878 | /* XXX it's arguable that compiler casting to IV might be subtly |
| 2879 | different from modf (for numbers inside (IV_MIN,UV_MAX)) in which | |
| 2880 | else preferring IV has introduced a subtle behaviour change bug. OTOH | |
| 2881 | relying on floating point to be accurate is a bug. */ | |
| 2882 | ||
| c781a409 | 2883 | if (!SvOK(sv)) { |
| 922c4365 | 2884 | SETu(0); |
| c781a409 RD |
2885 | } |
| 2886 | else if (SvIOK(sv)) { | |
| 2887 | if (SvIsUV(sv)) | |
| 6f1401dc | 2888 | SETu(SvUV_nomg(sv)); |
| c781a409 | 2889 | else |
| 28e5dec8 | 2890 | SETi(iv); |
| c781a409 | 2891 | } |
| c781a409 | 2892 | else { |
| 6f1401dc | 2893 | const NV value = SvNV_nomg(sv); |
| 1048ea30 | 2894 | if (value >= 0.0) { |
| 28e5dec8 JH |
2895 | if (value < (NV)UV_MAX + 0.5) { |
| 2896 | SETu(U_V(value)); | |
| 2897 | } else { | |
| 059a1014 | 2898 | SETn(Perl_floor(value)); |
| 28e5dec8 | 2899 | } |
| 1048ea30 | 2900 | } |
| 28e5dec8 JH |
2901 | else { |
| 2902 | if (value > (NV)IV_MIN - 0.5) { | |
| 2903 | SETi(I_V(value)); | |
| 2904 | } else { | |
| 1bbae031 | 2905 | SETn(Perl_ceil(value)); |
| 28e5dec8 JH |
2906 | } |
| 2907 | } | |
| 774d564b | 2908 | } |
| 79072805 | 2909 | } |
| 79072805 LW |
2910 | RETURN; |
| 2911 | } | |
| 2912 | ||
| 463ee0b2 LW |
2913 | PP(pp_abs) |
| 2914 | { | |
| 6f1401dc DM |
2915 | dVAR; dSP; dTARGET; |
| 2916 | tryAMAGICun_MG(abs_amg, AMGf_numeric); | |
| a0d0e21e | 2917 | { |
| 6f1401dc | 2918 | SV * const sv = TOPs; |
| 28e5dec8 | 2919 | /* This will cache the NV value if string isn't actually integer */ |
| 6f1401dc | 2920 | const IV iv = SvIV_nomg(sv); |
| a227d84d | 2921 | |
| 800401ee | 2922 | if (!SvOK(sv)) { |
| 922c4365 | 2923 | SETu(0); |
| 800401ee JH |
2924 | } |
| 2925 | else if (SvIOK(sv)) { | |
| 28e5dec8 | 2926 | /* IVX is precise */ |
| 800401ee | 2927 | if (SvIsUV(sv)) { |
| 6f1401dc | 2928 | SETu(SvUV_nomg(sv)); /* force it to be numeric only */ |
| 28e5dec8 JH |
2929 | } else { |
| 2930 | if (iv >= 0) { | |
| 2931 | SETi(iv); | |
| 2932 | } else { | |
| 2933 | if (iv != IV_MIN) { | |
| 2934 | SETi(-iv); | |
| 2935 | } else { | |
| 2936 | /* 2s complement assumption. Also, not really needed as | |
| 2937 | IV_MIN and -IV_MIN should both be %100...00 and NV-able */ | |
| 2938 | SETu(IV_MIN); | |
| 2939 | } | |
| a227d84d | 2940 | } |
| 28e5dec8 JH |
2941 | } |
| 2942 | } else{ | |
| 6f1401dc | 2943 | const NV value = SvNV_nomg(sv); |
| 774d564b | 2944 | if (value < 0.0) |
| 1b6737cc | 2945 | SETn(-value); |
| a4474c9e DD |
2946 | else |
| 2947 | SETn(value); | |
| 774d564b | 2948 | } |
| a0d0e21e | 2949 | } |
| 774d564b | 2950 | RETURN; |
| 463ee0b2 LW |
2951 | } |
| 2952 | ||
| 79072805 LW |
2953 | PP(pp_oct) |
| 2954 | { | |
| 97aff369 | 2955 | dVAR; dSP; dTARGET; |
| 5c144d81 | 2956 | const char *tmps; |
| 53305cf1 | 2957 | I32 flags = PERL_SCAN_ALLOW_UNDERSCORES; |
| 6f894ead | 2958 | STRLEN len; |
| 53305cf1 NC |
2959 | NV result_nv; |
| 2960 | UV result_uv; | |
| 1b6737cc | 2961 | SV* const sv = POPs; |
| 79072805 | 2962 | |
| 349d4f2f | 2963 | tmps = (SvPV_const(sv, len)); |
| 2bc69dc4 NIS |
2964 | if (DO_UTF8(sv)) { |
| 2965 | /* If Unicode, try to downgrade | |
| 2966 | * If not possible, croak. */ | |
| 1b6737cc | 2967 | SV* const tsv = sv_2mortal(newSVsv(sv)); |
| 2bc69dc4 NIS |
2968 | |
| 2969 | SvUTF8_on(tsv); | |
| 2970 | sv_utf8_downgrade(tsv, FALSE); | |
| 349d4f2f | 2971 | tmps = SvPV_const(tsv, len); |
| 2bc69dc4 | 2972 | } |
| daa2adfd NC |
2973 | if (PL_op->op_type == OP_HEX) |
| 2974 | goto hex; | |
| 2975 | ||
| 6f894ead | 2976 | while (*tmps && len && isSPACE(*tmps)) |
| 53305cf1 | 2977 | tmps++, len--; |
| 9e24b6e2 | 2978 | if (*tmps == '0') |
| 53305cf1 | 2979 | tmps++, len--; |
| a674e8db | 2980 | if (*tmps == 'x' || *tmps == 'X') { |
| daa2adfd | 2981 | hex: |
| 53305cf1 | 2982 | result_uv = grok_hex (tmps, &len, &flags, &result_nv); |
| daa2adfd | 2983 | } |
| a674e8db | 2984 | else if (*tmps == 'b' || *tmps == 'B') |
| 53305cf1 | 2985 | result_uv = grok_bin (tmps, &len, &flags, &result_nv); |
| 464e2e8a | 2986 | else |
| 53305cf1 NC |
2987 | result_uv = grok_oct (tmps, &len, &flags, &result_nv); |
| 2988 | ||
| 2989 | if (flags & PERL_SCAN_GREATER_THAN_UV_MAX) { | |
| 2990 | XPUSHn(result_nv); | |
| 2991 | } | |
| 2992 | else { | |
| 2993 | XPUSHu(result_uv); | |
| 2994 | } | |
| 79072805 LW |
2995 | RETURN; |
| 2996 | } | |
| 2997 | ||
| 2998 | /* String stuff. */ | |
| 2999 | ||
| 3000 | PP(pp_length) | |
| 3001 | { | |
| 97aff369 | 3002 | dVAR; dSP; dTARGET; |
| 0bd48802 | 3003 | SV * const sv = TOPs; |
| a0ed51b3 | 3004 | |
| 656266fc | 3005 | if (SvGAMAGIC(sv)) { |
| 9f621bb0 NC |
3006 | /* For an overloaded or magic scalar, we can't know in advance if |
| 3007 | it's going to be UTF-8 or not. Also, we can't call sv_len_utf8 as | |
| 3008 | it likes to cache the length. Maybe that should be a documented | |
| 3009 | feature of it. | |
| 92331800 NC |
3010 | */ |
| 3011 | STRLEN len; | |
| 9f621bb0 NC |
3012 | const char *const p |
| 3013 | = sv_2pv_flags(sv, &len, | |
| 3014 | SV_UNDEF_RETURNS_NULL|SV_CONST_RETURN|SV_GMAGIC); | |
| 92331800 | 3015 | |
| d88e091f | 3016 | if (!p) { |
| 9407f9c1 DL |
3017 | if (!SvPADTMP(TARG)) { |
| 3018 | sv_setsv(TARG, &PL_sv_undef); | |
| 3019 | SETTARG; | |
| 3020 | } | |
| 3021 | SETs(&PL_sv_undef); | |
| d88e091f | 3022 | } |
| 9f621bb0 | 3023 | else if (DO_UTF8(sv)) { |
| 899be101 | 3024 | SETi(utf8_length((U8*)p, (U8*)p + len)); |
| 92331800 NC |
3025 | } |
| 3026 | else | |
| 3027 | SETi(len); | |
| 656266fc | 3028 | } else if (SvOK(sv)) { |
| 9f621bb0 NC |
3029 | /* Neither magic nor overloaded. */ |
| 3030 | if (DO_UTF8(sv)) | |
| 3031 | SETi(sv_len_utf8(sv)); | |
| 3032 | else | |
| 3033 | SETi(sv_len(sv)); | |
| 656266fc | 3034 | } else { |
| 9407f9c1 DL |
3035 | if (!SvPADTMP(TARG)) { |
| 3036 | sv_setsv_nomg(TARG, &PL_sv_undef); | |
| 3037 | SETTARG; | |
| 3038 | } | |
| 3039 | SETs(&PL_sv_undef); | |
| 92331800 | 3040 | } |
| 79072805 LW |
3041 | RETURN; |
| 3042 | } | |
| 3043 | ||
| 3044 | PP(pp_substr) | |
| 3045 | { | |
| 97aff369 | 3046 | dVAR; dSP; dTARGET; |
| 79072805 | 3047 | SV *sv; |
| 463ee0b2 | 3048 | STRLEN curlen; |
| 9402d6ed | 3049 | STRLEN utf8_curlen; |
| 777f7c56 EB |
3050 | SV * pos_sv; |
| 3051 | IV pos1_iv; | |
| 3052 | int pos1_is_uv; | |
| 3053 | IV pos2_iv; | |
| 3054 | int pos2_is_uv; | |
| 3055 | SV * len_sv; | |
| 3056 | IV len_iv = 0; | |
| 3057 | int len_is_uv = 1; | |
| 050e6362 | 3058 | const I32 lvalue = PL_op->op_flags & OPf_MOD || LVRET; |
| e1ec3a88 | 3059 | const char *tmps; |
| 777f7c56 | 3060 | const IV arybase = CopARYBASE_get(PL_curcop); |
| 9402d6ed | 3061 | SV *repl_sv = NULL; |
| cbbf8932 | 3062 | const char *repl = NULL; |
| 7b8d334a | 3063 | STRLEN repl_len; |
| 050e6362 | 3064 | const int num_args = PL_op->op_private & 7; |
| 13e30c65 | 3065 | bool repl_need_utf8_upgrade = FALSE; |
| 9402d6ed | 3066 | bool repl_is_utf8 = FALSE; |
| 79072805 | 3067 | |
| 78f9721b SM |
3068 | if (num_args > 2) { |
| 3069 | if (num_args > 3) { | |
| 9402d6ed | 3070 | repl_sv = POPs; |
| 83003860 | 3071 | repl = SvPV_const(repl_sv, repl_len); |
| 9402d6ed | 3072 | repl_is_utf8 = DO_UTF8(repl_sv) && SvCUR(repl_sv); |
| 7b8d334a | 3073 | } |
| 777f7c56 EB |
3074 | len_sv = POPs; |
| 3075 | len_iv = SvIV(len_sv); | |
| 3076 | len_is_uv = SvIOK_UV(len_sv); | |
| 5d82c453 | 3077 | } |
| 777f7c56 EB |
3078 | pos_sv = POPs; |
| 3079 | pos1_iv = SvIV(pos_sv); | |
| 3080 | pos1_is_uv = SvIOK_UV(pos_sv); | |
| 79072805 | 3081 | sv = POPs; |
| 849ca7ee | 3082 | PUTBACK; |
| 9402d6ed JH |
3083 | if (repl_sv) { |
| 3084 | if (repl_is_utf8) { | |
| 3085 | if (!DO_UTF8(sv)) | |
| 3086 | sv_utf8_upgrade(sv); | |
| 3087 | } | |
| 13e30c65 JH |
3088 | else if (DO_UTF8(sv)) |
| 3089 | repl_need_utf8_upgrade = TRUE; | |
| 9402d6ed | 3090 | } |
| 5c144d81 | 3091 | tmps = SvPV_const(sv, curlen); |
| 7e2040f0 | 3092 | if (DO_UTF8(sv)) { |
| 9402d6ed JH |
3093 | utf8_curlen = sv_len_utf8(sv); |
| 3094 | if (utf8_curlen == curlen) | |
| 3095 | utf8_curlen = 0; | |
| a0ed51b3 | 3096 | else |
| 9402d6ed | 3097 | curlen = utf8_curlen; |
| a0ed51b3 | 3098 | } |
| d1c2b58a | 3099 | else |
| 9402d6ed | 3100 | utf8_curlen = 0; |
| a0ed51b3 | 3101 | |
| 777f7c56 EB |
3102 | if ( (pos1_is_uv && arybase < 0) || (pos1_iv >= arybase) ) { /* pos >= $[ */ |
| 3103 | UV pos1_uv = pos1_iv-arybase; | |
| 3104 | /* Overflow can occur when $[ < 0 */ | |
| 3105 | if (arybase < 0 && pos1_uv < (UV)pos1_iv) | |
| 1c900557 | 3106 | goto bound_fail; |
| 777f7c56 EB |
3107 | pos1_iv = pos1_uv; |
| 3108 | pos1_is_uv = 1; | |
| 3109 | } | |
| 3110 | else if (pos1_is_uv ? (UV)pos1_iv > 0 : pos1_iv > 0) { | |
| 1c900557 | 3111 | goto bound_fail; /* $[=3; substr($_,2,...) */ |
| 777f7c56 EB |
3112 | } |
| 3113 | else { /* pos < $[ */ | |
| 3114 | if (pos1_iv == 0) { /* $[=1; substr($_,0,...) */ | |
| 3115 | pos1_iv = curlen; | |
| 3116 | pos1_is_uv = 1; | |
| 3117 | } else { | |
| 3118 | if (curlen) { | |
| 3119 | pos1_is_uv = curlen-1 > ~(UV)pos1_iv; | |
| 3120 | pos1_iv += curlen; | |
| 3121 | } | |
| 5d82c453 | 3122 | } |
| 68dc0745 | 3123 | } |
| 777f7c56 EB |
3124 | if (pos1_is_uv || pos1_iv > 0) { |
| 3125 | if ((UV)pos1_iv > curlen) | |
| 1c900557 | 3126 | goto bound_fail; |
| 777f7c56 EB |
3127 | } |
| 3128 | ||
| 3129 | if (num_args > 2) { | |
| 3130 | if (!len_is_uv && len_iv < 0) { | |
| 3131 | pos2_iv = curlen + len_iv; | |
| 3132 | if (curlen) | |
| 3133 | pos2_is_uv = curlen-1 > ~(UV)len_iv; | |
| 3134 | else | |
| 3135 | pos2_is_uv = 0; | |
| 3136 | } else { /* len_iv >= 0 */ | |
| 3137 | if (!pos1_is_uv && pos1_iv < 0) { | |
| 3138 | pos2_iv = pos1_iv + len_iv; | |
| 3139 | pos2_is_uv = (UV)len_iv > (UV)IV_MAX; | |
| 3140 | } else { | |
| 3141 | if ((UV)len_iv > curlen-(UV)pos1_iv) | |
| 3142 | pos2_iv = curlen; | |
| 3143 | else | |
| 3144 | pos2_iv = pos1_iv+len_iv; | |
| 3145 | pos2_is_uv = 1; | |
| 3146 | } | |
| 5d82c453 | 3147 | } |
| 2304df62 | 3148 | } |
| 79072805 | 3149 | else { |
| 777f7c56 EB |
3150 | pos2_iv = curlen; |
| 3151 | pos2_is_uv = 1; | |
| 3152 | } | |
| 3153 | ||
| 3154 | if (!pos2_is_uv && pos2_iv < 0) { | |
| 3155 | if (!pos1_is_uv && pos1_iv < 0) | |
| 1c900557 | 3156 | goto bound_fail; |
| 777f7c56 EB |
3157 | pos2_iv = 0; |
| 3158 | } | |
| 3159 | else if (!pos1_is_uv && pos1_iv < 0) | |
| 3160 | pos1_iv = 0; | |
| 3161 | ||
| 3162 | if ((UV)pos2_iv < (UV)pos1_iv) | |
| 3163 | pos2_iv = pos1_iv; | |
| 3164 | if ((UV)pos2_iv > curlen) | |
| 3165 | pos2_iv = curlen; | |
| 3166 | ||
| 3167 | { | |
| 3168 | /* pos1_iv and pos2_iv both in 0..curlen, so the cast is safe */ | |
| 3169 | const STRLEN pos = (STRLEN)( (UV)pos1_iv ); | |
| 3170 | const STRLEN len = (STRLEN)( (UV)pos2_iv - (UV)pos1_iv ); | |
| 777f7c56 | 3171 | STRLEN byte_len = len; |
| d931b1be NC |
3172 | STRLEN byte_pos = utf8_curlen |
| 3173 | ? sv_pos_u2b_flags(sv, pos, &byte_len, SV_CONST_RETURN) : pos; | |
| 3174 | ||
| 2154eca7 EB |
3175 | if (lvalue && !repl) { |
| 3176 | SV * ret; | |
| 3177 | ||
| 3178 | if (!SvGMAGICAL(sv)) { | |
| 3179 | if (SvROK(sv)) { | |
| 3180 | SvPV_force_nolen(sv); | |
| 3181 | Perl_ck_warner(aTHX_ packWARN(WARN_SUBSTR), | |
| 3182 | "Attempt to use reference as lvalue in substr"); | |
| 3183 | } | |
| 3184 | if (isGV_with_GP(sv)) | |
| 3185 | SvPV_force_nolen(sv); | |
| 3186 | else if (SvOK(sv)) /* is it defined ? */ | |
| 3187 | (void)SvPOK_only_UTF8(sv); | |
| 3188 | else | |
| 3189 | sv_setpvs(sv, ""); /* avoid lexical reincarnation */ | |
| 781e7547 | 3190 | } |
| 2154eca7 EB |
3191 | |
| 3192 | ret = sv_2mortal(newSV_type(SVt_PVLV)); /* Not TARG RT#67838 */ | |
| 3193 | sv_magic(ret, NULL, PERL_MAGIC_substr, NULL, 0); | |
| 3194 | LvTYPE(ret) = 'x'; | |
| 3195 | LvTARG(ret) = SvREFCNT_inc_simple(sv); | |
| 3196 | LvTARGOFF(ret) = pos; | |
| 3197 | LvTARGLEN(ret) = len; | |
| 3198 | ||
| 3199 | SPAGAIN; | |
| 3200 | PUSHs(ret); /* avoid SvSETMAGIC here */ | |
| 3201 | RETURN; | |
| 781e7547 DM |
3202 | } |
| 3203 | ||
| 2154eca7 EB |
3204 | SvTAINTED_off(TARG); /* decontaminate */ |
| 3205 | SvUTF8_off(TARG); /* decontaminate */ | |
| 3206 | ||
| 3207 | tmps += byte_pos; | |
| 777f7c56 | 3208 | sv_setpvn(TARG, tmps, byte_len); |
| 12aa1545 | 3209 | #ifdef USE_LOCALE_COLLATE |
| 14befaf4 | 3210 | sv_unmagic(TARG, PERL_MAGIC_collxfrm); |
| 12aa1545 | 3211 | #endif |
| 9402d6ed | 3212 | if (utf8_curlen) |
| 7f66633b | 3213 | SvUTF8_on(TARG); |
| 2154eca7 | 3214 | |
| f7928d6c | 3215 | if (repl) { |
| 13e30c65 JH |
3216 | SV* repl_sv_copy = NULL; |
| 3217 | ||
| 3218 | if (repl_need_utf8_upgrade) { | |
| 3219 | repl_sv_copy = newSVsv(repl_sv); | |
| 3220 | sv_utf8_upgrade(repl_sv_copy); | |
| 349d4f2f | 3221 | repl = SvPV_const(repl_sv_copy, repl_len); |
| 13e30c65 JH |
3222 | repl_is_utf8 = DO_UTF8(repl_sv_copy) && SvCUR(sv); |
| 3223 | } | |
| 502d9230 VP |
3224 | if (!SvOK(sv)) |
| 3225 | sv_setpvs(sv, ""); | |
| 777f7c56 | 3226 | sv_insert_flags(sv, byte_pos, byte_len, repl, repl_len, 0); |
| 9402d6ed | 3227 | if (repl_is_utf8) |
| f7928d6c | 3228 | SvUTF8_on(sv); |
| ef8d46e8 | 3229 | SvREFCNT_dec(repl_sv_copy); |
| f7928d6c | 3230 | } |
| 79072805 | 3231 | } |
| 849ca7ee | 3232 | SPAGAIN; |
| e27c778f FC |
3233 | SvSETMAGIC(TARG); |
| 3234 | PUSHs(TARG); | |
| 79072805 | 3235 | RETURN; |
| 777f7c56 | 3236 | |
| 1c900557 | 3237 | bound_fail: |
| 777f7c56 EB |
3238 | if (lvalue || repl) |
| 3239 | Perl_croak(aTHX_ "substr outside of string"); | |
| 3240 | Perl_ck_warner(aTHX_ packWARN(WARN_SUBSTR), "substr outside of string"); | |
| 3241 | RETPUSHUNDEF; | |
| 79072805 LW |
3242 | } |
| 3243 | ||
| 3244 | PP(pp_vec) | |
| 3245 | { | |
| 2154eca7 | 3246 | dVAR; dSP; |
| 1b6737cc AL |
3247 | register const IV size = POPi; |
| 3248 | register const IV offset = POPi; | |
| 3249 | register SV * const src = POPs; | |
| 3250 | const I32 lvalue = PL_op->op_flags & OPf_MOD || LVRET; | |
| 2154eca7 | 3251 | SV * ret; |
| a0d0e21e | 3252 | |
| 81e118e0 | 3253 | if (lvalue) { /* it's an lvalue! */ |
| 2154eca7 EB |
3254 | ret = sv_2mortal(newSV_type(SVt_PVLV)); /* Not TARG RT#67838 */ |
| 3255 | sv_magic(ret, NULL, PERL_MAGIC_vec, NULL, 0); | |
| 3256 | LvTYPE(ret) = 'v'; | |
| 3257 | LvTARG(ret) = SvREFCNT_inc_simple(src); | |
| 3258 | LvTARGOFF(ret) = offset; | |
| 3259 | LvTARGLEN(ret) = size; | |
| 3260 | } | |
| 3261 | else { | |
| 3262 | dTARGET; | |
| 3263 | SvTAINTED_off(TARG); /* decontaminate */ | |
| 3264 | ret = TARG; | |
| 79072805 LW |
3265 | } |
| 3266 | ||
| 2154eca7 EB |
3267 | sv_setuv(ret, do_vecget(src, offset, size)); |
| 3268 | PUSHs(ret); | |
| 79072805 LW |
3269 | RETURN; |
| 3270 | } | |
| 3271 | ||
| 3272 | PP(pp_index) | |
| 3273 | { | |
| 97aff369 | 3274 | dVAR; dSP; dTARGET; |
| 79072805 LW |
3275 | SV *big; |
| 3276 | SV *little; | |
| c445ea15 | 3277 | SV *temp = NULL; |
| ad66a58c | 3278 | STRLEN biglen; |
| 2723d216 | 3279 | STRLEN llen = 0; |
| 79072805 LW |
3280 | I32 offset; |
| 3281 | I32 retval; | |
| 73ee8be2 NC |
3282 | const char *big_p; |
| 3283 | const char *little_p; | |
| fc15ae8f | 3284 | const I32 arybase = CopARYBASE_get(PL_curcop); |
| 2f040f7f NC |
3285 | bool big_utf8; |
| 3286 | bool little_utf8; | |
| 2723d216 | 3287 | const bool is_index = PL_op->op_type == OP_INDEX; |
| 79072805 | 3288 | |
| 2723d216 NC |
3289 | if (MAXARG >= 3) { |
| 3290 | /* arybase is in characters, like offset, so combine prior to the | |
| 3291 | UTF-8 to bytes calculation. */ | |
| 79072805 | 3292 | offset = POPi - arybase; |
| 2723d216 | 3293 | } |
| 79072805 LW |
3294 | little = POPs; |
| 3295 | big = POPs; | |
| 73ee8be2 NC |
3296 | big_p = SvPV_const(big, biglen); |
| 3297 | little_p = SvPV_const(little, llen); | |
| 3298 | ||
| e609e586 NC |
3299 | big_utf8 = DO_UTF8(big); |
| 3300 | little_utf8 = DO_UTF8(little); | |
| 3301 | if (big_utf8 ^ little_utf8) { | |
| 3302 | /* One needs to be upgraded. */ | |
| 2f040f7f NC |
3303 | if (little_utf8 && !PL_encoding) { |
| 3304 | /* Well, maybe instead we might be able to downgrade the small | |
| 3305 | string? */ | |
| 1eced8f8 | 3306 | char * const pv = (char*)bytes_from_utf8((U8 *)little_p, &llen, |
| 2f040f7f NC |
3307 | &little_utf8); |
| 3308 | if (little_utf8) { | |
| 3309 | /* If the large string is ISO-8859-1, and it's not possible to | |
| 3310 | convert the small string to ISO-8859-1, then there is no | |
| 3311 | way that it could be found anywhere by index. */ | |
| 3312 | retval = -1; | |
| 3313 | goto fail; | |
| 3314 | } | |
| e609e586 | 3315 | |
| 2f040f7f NC |
3316 | /* At this point, pv is a malloc()ed string. So donate it to temp |
| 3317 | to ensure it will get free()d */ | |
| 3318 | little = temp = newSV(0); | |
| 73ee8be2 NC |
3319 | sv_usepvn(temp, pv, llen); |
| 3320 | little_p = SvPVX(little); | |
| e609e586 | 3321 | } else { |
| 73ee8be2 NC |
3322 | temp = little_utf8 |
| 3323 | ? newSVpvn(big_p, biglen) : newSVpvn(little_p, llen); | |
| 2f040f7f NC |
3324 | |
| 3325 | if (PL_encoding) { | |
| 3326 | sv_recode_to_utf8(temp, PL_encoding); | |
| 3327 | } else { | |
| 3328 | sv_utf8_upgrade(temp); | |
| 3329 | } | |
| 3330 | if (little_utf8) { | |
| 3331 | big = temp; | |
| 3332 | big_utf8 = TRUE; | |
| 73ee8be2 | 3333 | big_p = SvPV_const(big, biglen); |
| 2f040f7f NC |
3334 | } else { |
| 3335 | little = temp; | |
| 73ee8be2 | 3336 | little_p = SvPV_const(little, llen); |
| 2f040f7f | 3337 | } |
| e609e586 NC |
3338 | } |
| 3339 | } | |
| 73ee8be2 NC |
3340 | if (SvGAMAGIC(big)) { |
| 3341 | /* Life just becomes a lot easier if I use a temporary here. | |
| 3342 | Otherwise I need to avoid calls to sv_pos_u2b(), which (dangerously) | |
| 3343 | will trigger magic and overloading again, as will fbm_instr() | |
| 3344 | */ | |
| 59cd0e26 NC |
3345 | big = newSVpvn_flags(big_p, biglen, |
| 3346 | SVs_TEMP | (big_utf8 ? SVf_UTF8 : 0)); | |
| 73ee8be2 NC |
3347 | big_p = SvPVX(big); |
| 3348 | } | |
| e4e44778 | 3349 | if (SvGAMAGIC(little) || (is_index && !SvOK(little))) { |
| 73ee8be2 NC |
3350 | /* index && SvOK() is a hack. fbm_instr() calls SvPV_const, which will |
| 3351 | warn on undef, and we've already triggered a warning with the | |
| 3352 | SvPV_const some lines above. We can't remove that, as we need to | |
| 3353 | call some SvPV to trigger overloading early and find out if the | |
| 3354 | string is UTF-8. | |
| 3355 | This is all getting to messy. The API isn't quite clean enough, | |
| 3356 | because data access has side effects. | |
| 3357 | */ | |
| 59cd0e26 NC |
3358 | little = newSVpvn_flags(little_p, llen, |
| 3359 | SVs_TEMP | (little_utf8 ? SVf_UTF8 : 0)); | |
| 73ee8be2 NC |
3360 | little_p = SvPVX(little); |
| 3361 | } | |
| e609e586 | 3362 | |
| 79072805 | 3363 | if (MAXARG < 3) |
| 2723d216 | 3364 | offset = is_index ? 0 : biglen; |
| a0ed51b3 | 3365 | else { |
| ad66a58c | 3366 | if (big_utf8 && offset > 0) |
| a0ed51b3 | 3367 | sv_pos_u2b(big, &offset, 0); |
| 73ee8be2 NC |
3368 | if (!is_index) |
| 3369 | offset += llen; | |
| a0ed51b3 | 3370 | } |
| 79072805 LW |
3371 | if (offset < 0) |
| 3372 | offset = 0; | |
| ad66a58c NC |
3373 | else if (offset > (I32)biglen) |
| 3374 | offset = biglen; | |
| 73ee8be2 NC |
3375 | if (!(little_p = is_index |
| 3376 | ? fbm_instr((unsigned char*)big_p + offset, | |
| 3377 | (unsigned char*)big_p + biglen, little, 0) | |
| 3378 | : rninstr(big_p, big_p + offset, | |
| 3379 | little_p, little_p + llen))) | |
| a0ed51b3 | 3380 | retval = -1; |
| ad66a58c | 3381 | else { |
| 73ee8be2 | 3382 | retval = little_p - big_p; |
| ad66a58c NC |
3383 | if (retval > 0 && big_utf8) |
| 3384 | sv_pos_b2u(big, &retval); | |
| 3385 | } | |
| ef8d46e8 | 3386 | SvREFCNT_dec(temp); |
| 2723d216 | 3387 | fail: |
| a0ed51b3 | 3388 | PUSHi(retval + arybase); |
| 79072805 LW |
3389 | RETURN; |
| 3390 | } | |
| 3391 | ||
| 3392 | PP(pp_sprintf) | |
| 3393 | { | |
| 97aff369 | 3394 | dVAR; dSP; dMARK; dORIGMARK; dTARGET; |
| 3e6bd4bf | 3395 | SvTAINTED_off(TARG); |
| 79072805 | 3396 | do_sprintf(TARG, SP-MARK, MARK+1); |
| bbce6d69 | 3397 | TAINT_IF(SvTAINTED(TARG)); |
| 79072805 LW |
3398 | SP = ORIGMARK; |
| 3399 | PUSHTARG; | |
| 3400 | RETURN; | |
| 3401 | } | |
| 3402 | ||
| 79072805 LW |
3403 | PP(pp_ord) |
| 3404 | { | |
| 97aff369 | 3405 | dVAR; dSP; dTARGET; |
| 1eced8f8 | 3406 | |
| 7df053ec | 3407 | SV *argsv = POPs; |
| ba210ebe | 3408 | STRLEN len; |
| 349d4f2f | 3409 | const U8 *s = (U8*)SvPV_const(argsv, len); |
| 121910a4 | 3410 | |
| 799ef3cb | 3411 | if (PL_encoding && SvPOK(argsv) && !DO_UTF8(argsv)) { |
| 1eced8f8 | 3412 | SV * const tmpsv = sv_2mortal(newSVsv(argsv)); |
| 799ef3cb | 3413 | s = (U8*)sv_recode_to_utf8(tmpsv, PL_encoding); |
| 121910a4 JH |
3414 | argsv = tmpsv; |
| 3415 | } | |
| 79072805 | 3416 | |
| 872c91ae | 3417 | XPUSHu(DO_UTF8(argsv) ? |
| 89ebb4a3 | 3418 | utf8n_to_uvchr(s, UTF8_MAXBYTES, 0, UTF8_ALLOW_ANYUV) : |
| 5fc32dea | 3419 | (UV)(*s & 0xff)); |
| 68795e93 | 3420 | |
| 79072805 LW |
3421 | RETURN; |
| 3422 | } | |
| 3423 | ||
| 463ee0b2 LW |
3424 | PP(pp_chr) |
| 3425 | { | |
| 97aff369 | 3426 | dVAR; dSP; dTARGET; |
| 463ee0b2 | 3427 | char *tmps; |
| 8a064bd6 JH |
3428 | UV value; |
| 3429 | ||
| 3430 | if (((SvIOK_notUV(TOPs) && SvIV(TOPs) < 0) | |
| 3431 | || | |
| 3432 | (SvNOK(TOPs) && SvNV(TOPs) < 0.0))) { | |
| 3433 | if (IN_BYTES) { | |
| 3434 | value = POPu; /* chr(-1) eq chr(0xff), etc. */ | |
| 3435 | } else { | |
| 3436 | (void) POPs; /* Ignore the argument value. */ | |
| 3437 | value = UNICODE_REPLACEMENT; | |
| 3438 | } | |
| 3439 | } else { | |
| 3440 | value = POPu; | |
| 3441 | } | |
| 463ee0b2 | 3442 | |
| 862a34c6 | 3443 | SvUPGRADE(TARG,SVt_PV); |
| a0ed51b3 | 3444 | |
| 0064a8a9 | 3445 | if (value > 255 && !IN_BYTES) { |
| eb160463 | 3446 | SvGROW(TARG, (STRLEN)UNISKIP(value)+1); |
| 62961d2e | 3447 | tmps = (char*)uvchr_to_utf8_flags((U8*)SvPVX(TARG), value, 0); |
| 349d4f2f | 3448 | SvCUR_set(TARG, tmps - SvPVX_const(TARG)); |
| a0ed51b3 LW |
3449 | *tmps = '\0'; |
| 3450 | (void)SvPOK_only(TARG); | |
| aa6ffa16 | 3451 | SvUTF8_on(TARG); |
| a0ed51b3 LW |
3452 | XPUSHs(TARG); |
| 3453 | RETURN; | |
| 3454 | } | |
| 3455 | ||
| 748a9306 | 3456 | SvGROW(TARG,2); |
| 463ee0b2 LW |
3457 | SvCUR_set(TARG, 1); |
| 3458 | tmps = SvPVX(TARG); | |
| eb160463 | 3459 | *tmps++ = (char)value; |
| 748a9306 | 3460 | *tmps = '\0'; |
| a0d0e21e | 3461 | (void)SvPOK_only(TARG); |
| 4c5ed6e2 | 3462 | |
| 88632417 | 3463 | if (PL_encoding && !IN_BYTES) { |
| 799ef3cb | 3464 | sv_recode_to_utf8(TARG, PL_encoding); |
| 88632417 JH |
3465 | tmps = SvPVX(TARG); |
| 3466 | if (SvCUR(TARG) == 0 || !is_utf8_string((U8*)tmps, SvCUR(TARG)) || | |
| 4c5ed6e2 TS |
3467 | UNICODE_IS_REPLACEMENT(utf8_to_uvchr((U8*)tmps, NULL))) { |
| 3468 | SvGROW(TARG, 2); | |
| d5a15ac2 | 3469 | tmps = SvPVX(TARG); |
| 4c5ed6e2 TS |
3470 | SvCUR_set(TARG, 1); |
| 3471 | *tmps++ = (char)value; | |
| 88632417 | 3472 | *tmps = '\0'; |
| 4c5ed6e2 | 3473 | SvUTF8_off(TARG); |
| 88632417 JH |
3474 | } |
| 3475 | } | |
| 4c5ed6e2 | 3476 | |
| 463ee0b2 LW |
3477 | XPUSHs(TARG); |
| 3478 | RETURN; | |
| 3479 | } | |
| 3480 | ||
| 79072805 LW |
3481 | PP(pp_crypt) |
| 3482 | { | |
| 79072805 | 3483 | #ifdef HAS_CRYPT |
| 97aff369 | 3484 | dVAR; dSP; dTARGET; |
| 5f74f29c | 3485 | dPOPTOPssrl; |
| 85c16d83 | 3486 | STRLEN len; |
| 10516c54 | 3487 | const char *tmps = SvPV_const(left, len); |
| 2bc69dc4 | 3488 | |
| 85c16d83 | 3489 | if (DO_UTF8(left)) { |
| 2bc69dc4 | 3490 | /* If Unicode, try to downgrade. |
| f2791508 JH |
3491 | * If not possible, croak. |
| 3492 | * Yes, we made this up. */ | |
| 1b6737cc | 3493 | SV* const tsv = sv_2mortal(newSVsv(left)); |
| 2bc69dc4 | 3494 | |
| f2791508 | 3495 | SvUTF8_on(tsv); |
| 2bc69dc4 | 3496 | sv_utf8_downgrade(tsv, FALSE); |
| 349d4f2f | 3497 | tmps = SvPV_const(tsv, len); |
| 85c16d83 | 3498 | } |
| 05404ffe JH |
3499 | # ifdef USE_ITHREADS |
| 3500 | # ifdef HAS_CRYPT_R | |
| 3501 | if (!PL_reentrant_buffer->_crypt_struct_buffer) { | |
| 3502 | /* This should be threadsafe because in ithreads there is only | |
| 3503 | * one thread per interpreter. If this would not be true, | |
| 3504 | * we would need a mutex to protect this malloc. */ | |
| 3505 | PL_reentrant_buffer->_crypt_struct_buffer = | |
| 3506 | (struct crypt_data *)safemalloc(sizeof(struct crypt_data)); | |
| 3507 | #if defined(__GLIBC__) || defined(__EMX__) | |
| 3508 | if (PL_reentrant_buffer->_crypt_struct_buffer) { | |
| 3509 | PL_reentrant_buffer->_crypt_struct_buffer->initialized = 0; | |
| 3510 | /* work around glibc-2.2.5 bug */ | |
| 3511 | PL_reentrant_buffer->_crypt_struct_buffer->current_saltbits = 0; | |
| 3512 | } | |
| 05404ffe | 3513 | #endif |
| 6ab58e4d | 3514 | } |
| 05404ffe JH |
3515 | # endif /* HAS_CRYPT_R */ |
| 3516 | # endif /* USE_ITHREADS */ | |
| 5f74f29c | 3517 | # ifdef FCRYPT |
| 83003860 | 3518 | sv_setpv(TARG, fcrypt(tmps, SvPV_nolen_const(right))); |
| 5f74f29c | 3519 | # else |
| 83003860 | 3520 | sv_setpv(TARG, PerlProc_crypt(tmps, SvPV_nolen_const(right))); |
| 5f74f29c | 3521 | # endif |
| ec93b65f | 3522 | SETTARG; |
| 4808266b | 3523 | RETURN; |
| 79072805 | 3524 | #else |
| b13b2135 | 3525 | DIE(aTHX_ |
| 79072805 LW |
3526 | "The crypt() function is unimplemented due to excessive paranoia."); |
| 3527 | #endif | |
| 79072805 LW |
3528 | } |
| 3529 | ||
| 00f254e2 KW |
3530 | /* Generally UTF-8 and UTF-EBCDIC are indistinguishable at this level. So |
| 3531 | * most comments below say UTF-8, when in fact they mean UTF-EBCDIC as well */ | |
| 3532 | ||
| 00f254e2 KW |
3533 | /* Below are several macros that generate code */ |
| 3534 | /* Generates code to store a unicode codepoint c that is known to occupy | |
| 3535 | * exactly two UTF-8 and UTF-EBCDIC bytes; it is stored into p and p+1. */ | |
| 3536 | #define STORE_UNI_TO_UTF8_TWO_BYTE(p, c) \ | |
| 3537 | STMT_START { \ | |
| 3538 | *(p) = UTF8_TWO_BYTE_HI(c); \ | |
| 3539 | *((p)+1) = UTF8_TWO_BYTE_LO(c); \ | |
| 3540 | } STMT_END | |
| 3541 | ||
| 3542 | /* Like STORE_UNI_TO_UTF8_TWO_BYTE, but advances p to point to the next | |
| 3543 | * available byte after the two bytes */ | |
| 3544 | #define CAT_UNI_TO_UTF8_TWO_BYTE(p, c) \ | |
| 3545 | STMT_START { \ | |
| 3546 | *(p)++ = UTF8_TWO_BYTE_HI(c); \ | |
| 3547 | *((p)++) = UTF8_TWO_BYTE_LO(c); \ | |
| 3548 | } STMT_END | |
| 3549 | ||
| 3550 | /* Generates code to store the upper case of latin1 character l which is known | |
| 3551 | * to have its upper case be non-latin1 into the two bytes p and p+1. There | |
| 3552 | * are only two characters that fit this description, and this macro knows | |
| 3553 | * about them, and that the upper case values fit into two UTF-8 or UTF-EBCDIC | |
| 3554 | * bytes */ | |
| 3555 | #define STORE_NON_LATIN1_UC(p, l) \ | |
| 3556 | STMT_START { \ | |
| 3557 | if ((l) == LATIN_SMALL_LETTER_Y_WITH_DIAERESIS) { \ | |
| 3558 | STORE_UNI_TO_UTF8_TWO_BYTE((p), LATIN_CAPITAL_LETTER_Y_WITH_DIAERESIS); \ | |
| 3559 | } else { /* Must be the following letter */ \ | |
| 3560 | STORE_UNI_TO_UTF8_TWO_BYTE((p), GREEK_CAPITAL_LETTER_MU); \ | |
| 3561 | } \ | |
| 3562 | } STMT_END | |
| 3563 | ||
| 3564 | /* Like STORE_NON_LATIN1_UC, but advances p to point to the next available byte | |
| 3565 | * after the character stored */ | |
| 3566 | #define CAT_NON_LATIN1_UC(p, l) \ | |
| 3567 | STMT_START { \ | |
| 3568 | if ((l) == LATIN_SMALL_LETTER_Y_WITH_DIAERESIS) { \ | |
| 3569 | CAT_UNI_TO_UTF8_TWO_BYTE((p), LATIN_CAPITAL_LETTER_Y_WITH_DIAERESIS); \ | |
| 3570 | } else { \ | |
| 3571 | CAT_UNI_TO_UTF8_TWO_BYTE((p), GREEK_CAPITAL_LETTER_MU); \ | |
| 3572 | } \ | |
| 3573 | } STMT_END | |
| 3574 | ||
| 3575 | /* Generates code to add the two UTF-8 bytes (probably u) that are the upper | |
| 3576 | * case of l into p and p+1. u must be the result of toUPPER_LATIN1_MOD(l), | |
| 3577 | * and must require two bytes to store it. Advances p to point to the next | |
| 3578 | * available position */ | |
| 3579 | #define CAT_TWO_BYTE_UNI_UPPER_MOD(p, l, u) \ | |
| 3580 | STMT_START { \ | |
| 3581 | if ((u) != LATIN_SMALL_LETTER_Y_WITH_DIAERESIS) { \ | |
| 3582 | CAT_UNI_TO_UTF8_TWO_BYTE((p), (u)); /* not special, just save it */ \ | |
| 3583 | } else if (l == LATIN_SMALL_LETTER_SHARP_S) { \ | |
| 3584 | *(p)++ = 'S'; *(p)++ = 'S'; /* upper case is 'SS' */ \ | |
| 3585 | } else {/* else is one of the other two special cases */ \ | |
| 3586 | CAT_NON_LATIN1_UC((p), (l)); \ | |
| 3587 | } \ | |
| 3588 | } STMT_END | |
| 3589 | ||
| 79072805 LW |
3590 | PP(pp_ucfirst) |
| 3591 | { | |
| 00f254e2 KW |
3592 | /* Actually is both lcfirst() and ucfirst(). Only the first character |
| 3593 | * changes. This means that possibly we can change in-place, ie., just | |
| 3594 | * take the source and change that one character and store it back, but not | |
| 3595 | * if read-only etc, or if the length changes */ | |
| 3596 | ||
| 97aff369 | 3597 | dVAR; |
| 39644a26 | 3598 | dSP; |
| d54190f6 | 3599 | SV *source = TOPs; |
| 00f254e2 | 3600 | STRLEN slen; /* slen is the byte length of the whole SV. */ |
| d54190f6 NC |
3601 | STRLEN need; |
| 3602 | SV *dest; | |
| 00f254e2 KW |
3603 | bool inplace; /* ? Convert first char only, in-place */ |
| 3604 | bool doing_utf8 = FALSE; /* ? using utf8 */ | |
| 3605 | bool convert_source_to_utf8 = FALSE; /* ? need to convert */ | |
| 12e9c124 | 3606 | const int op_type = PL_op->op_type; |
| d54190f6 NC |
3607 | const U8 *s; |
| 3608 | U8 *d; | |
| 3609 | U8 tmpbuf[UTF8_MAXBYTES_CASE+1]; | |
| 00f254e2 KW |
3610 | STRLEN ulen; /* ulen is the byte length of the original Unicode character |
| 3611 | * stored as UTF-8 at s. */ | |
| 3612 | STRLEN tculen; /* tculen is the byte length of the freshly titlecased (or | |
| 3613 | * lowercased) character stored in tmpbuf. May be either | |
| 3614 | * UTF-8 or not, but in either case is the number of bytes */ | |
| d54190f6 NC |
3615 | |
| 3616 | SvGETMAGIC(source); | |
| 3617 | if (SvOK(source)) { | |
| 3618 | s = (const U8*)SvPV_nomg_const(source, slen); | |
| 3619 | } else { | |
| 0a0ffbce RGS |
3620 | if (ckWARN(WARN_UNINITIALIZED)) |
| 3621 | report_uninit(source); | |
| 1eced8f8 | 3622 | s = (const U8*)""; |
| d54190f6 NC |
3623 | slen = 0; |
| 3624 | } | |
| a0ed51b3 | 3625 | |
| 00f254e2 KW |
3626 | /* We may be able to get away with changing only the first character, in |
| 3627 | * place, but not if read-only, etc. Later we may discover more reasons to | |
| 3628 | * not convert in-place. */ | |
| 3629 | inplace = SvPADTMP(source) && !SvREADONLY(source) && SvTEMP(source); | |
| 3630 | ||
| 3631 | /* First calculate what the changed first character should be. This affects | |
| 3632 | * whether we can just swap it out, leaving the rest of the string unchanged, | |
| 3633 | * or even if have to convert the dest to UTF-8 when the source isn't */ | |
| 3634 | ||
| 3635 | if (! slen) { /* If empty */ | |
| 3636 | need = 1; /* still need a trailing NUL */ | |
| 3637 | } | |
| 3638 | else if (DO_UTF8(source)) { /* Is the source utf8? */ | |
| d54190f6 | 3639 | doing_utf8 = TRUE; |
| 00f254e2 KW |
3640 | |
| 3641 | /* TODO: This is #ifdefd out because it has hard-coded the standard mappings, | |
| 3642 | * and doesn't allow for the user to specify their own. When code is added to | |
| 3643 | * detect if there is a user-defined mapping in force here, and if so to use | |
| 3644 | * that, then the code below can be compiled. The detection would be a good | |
| 3645 | * thing anyway, as currently the user-defined mappings only work on utf8 | |
| 3646 | * strings, and thus depend on the chosen internal storage method, which is a | |
| 3647 | * bad thing */ | |
| 3648 | #ifdef GO_AHEAD_AND_BREAK_USER_DEFINED_CASE_MAPPINGS | |
| 3649 | if (UTF8_IS_INVARIANT(*s)) { | |
| 3650 | ||
| 3651 | /* An invariant source character is either ASCII or, in EBCDIC, an | |
| 3652 | * ASCII equivalent or a caseless C1 control. In both these cases, | |
| 3653 | * the lower and upper cases of any character are also invariants | |
| 3654 | * (and title case is the same as upper case). So it is safe to | |
| 3655 | * use the simple case change macros which avoid the overhead of | |
| 3656 | * the general functions. Note that if perl were to be extended to | |
| 3657 | * do locale handling in UTF-8 strings, this wouldn't be true in, | |
| 3658 | * for example, Lithuanian or Turkic. */ | |
| 3659 | *tmpbuf = (op_type == OP_LCFIRST) ? toLOWER(*s) : toUPPER(*s); | |
| 3660 | tculen = ulen = 1; | |
| 3661 | need = slen + 1; | |
| 12e9c124 | 3662 | } |
| 00f254e2 KW |
3663 | else if (UTF8_IS_DOWNGRADEABLE_START(*s)) { |
| 3664 | U8 chr; | |
| 3665 | ||
| 3666 | /* Similarly, if the source character isn't invariant but is in the | |
| 3667 | * latin1 range (or EBCDIC equivalent thereof), we have the case | |
| 3668 | * changes compiled into perl, and can avoid the overhead of the | |
| 3669 | * general functions. In this range, the characters are stored as | |
| 3670 | * two UTF-8 bytes, and it so happens that any changed-case version | |
| 3671 | * is also two bytes (in both ASCIIish and EBCDIC machines). */ | |
| 3672 | tculen = ulen = 2; | |
| 3673 | need = slen + 1; | |
| 3674 | ||
| 3675 | /* Convert the two source bytes to a single Unicode code point | |
| 3676 | * value, change case and save for below */ | |
| 356979f4 | 3677 | chr = TWO_BYTE_UTF8_TO_UNI(*s, *(s+1)); |
| 00f254e2 KW |
3678 | if (op_type == OP_LCFIRST) { /* lower casing is easy */ |
| 3679 | U8 lower = toLOWER_LATIN1(chr); | |
| 3680 | STORE_UNI_TO_UTF8_TWO_BYTE(tmpbuf, lower); | |
| 3681 | } | |
| 3682 | else { /* ucfirst */ | |
| 3683 | U8 upper = toUPPER_LATIN1_MOD(chr); | |
| 3684 | ||
| 3685 | /* Most of the latin1 range characters are well-behaved. Their | |
| 3686 | * title and upper cases are the same, and are also in the | |
| 3687 | * latin1 range. The macro above returns their upper (hence | |
| 3688 | * title) case, and all that need be done is to save the result | |
| 3689 | * for below. However, several characters are problematic, and | |
| 3690 | * have to be handled specially. The MOD in the macro name | |
| 3691 | * above means that these tricky characters all get mapped to | |
| 3692 | * the single character LATIN_SMALL_LETTER_Y_WITH_DIAERESIS. | |
| 3693 | * This mapping saves some tests for the majority of the | |
| 3694 | * characters */ | |
| 3695 | ||
| 3696 | if (upper != LATIN_SMALL_LETTER_Y_WITH_DIAERESIS) { | |
| 3697 | ||
| 3698 | /* Not tricky. Just save it. */ | |
| 3699 | STORE_UNI_TO_UTF8_TWO_BYTE(tmpbuf, upper); | |
| 3700 | } | |
| 3701 | else if (chr == LATIN_SMALL_LETTER_SHARP_S) { | |
| 3702 | ||
| 3703 | /* This one is tricky because it is two characters long, | |
| 3704 | * though the UTF-8 is still two bytes, so the stored | |
| 3705 | * length doesn't change */ | |
| 3706 | *tmpbuf = 'S'; /* The UTF-8 is 'Ss' */ | |
| 3707 | *(tmpbuf + 1) = 's'; | |
| 3708 | } | |
| 3709 | else { | |
| 3710 | ||
| 3711 | /* The other two have their title and upper cases the same, | |
| 3712 | * but are tricky because the changed-case characters | |
| 3713 | * aren't in the latin1 range. They, however, do fit into | |
| 3714 | * two UTF-8 bytes */ | |
| 3715 | STORE_NON_LATIN1_UC(tmpbuf, chr); | |
| 3716 | } | |
| 3717 | } | |
| 3718 | } | |
| 3719 | else { | |
| 3720 | #endif /* end of dont want to break user-defined casing */ | |
| 3721 | ||
| 3722 | /* Here, can't short-cut the general case */ | |
| 3723 | ||
| 3724 | utf8_to_uvchr(s, &ulen); | |
| 3725 | if (op_type == OP_UCFIRST) toTITLE_utf8(s, tmpbuf, &tculen); | |
| 3726 | else toLOWER_utf8(s, tmpbuf, &tculen); | |
| 3727 | ||
| 3728 | /* we can't do in-place if the length changes. */ | |
| 3729 | if (ulen != tculen) inplace = FALSE; | |
| 3730 | need = slen + 1 - ulen + tculen; | |
| 3731 | #ifdef GO_AHEAD_AND_BREAK_USER_DEFINED_CASE_MAPPINGS | |
| 3732 | } | |
| 3733 | #endif | |
| d54190f6 | 3734 | } |
| 00f254e2 KW |
3735 | else { /* Non-zero length, non-UTF-8, Need to consider locale and if |
| 3736 | * latin1 is treated as caseless. Note that a locale takes | |
| 3737 | * precedence */ | |
| 3738 | tculen = 1; /* Most characters will require one byte, but this will | |
| 3739 | * need to be overridden for the tricky ones */ | |
| 3740 | need = slen + 1; | |
| 3741 | ||
| 3742 | if (op_type == OP_LCFIRST) { | |
| d54190f6 | 3743 | |
| 00f254e2 KW |
3744 | /* lower case the first letter: no trickiness for any character */ |
| 3745 | *tmpbuf = (IN_LOCALE_RUNTIME) ? toLOWER_LC(*s) : | |
| 3746 | ((IN_UNI_8_BIT) ? toLOWER_LATIN1(*s) : toLOWER(*s)); | |
| 3747 | } | |
| 3748 | /* is ucfirst() */ | |
| 3749 | else if (IN_LOCALE_RUNTIME) { | |
| 3750 | *tmpbuf = toUPPER_LC(*s); /* This would be a bug if any locales | |
| 3751 | * have upper and title case different | |
| 3752 | */ | |
| 3753 | } | |
| 3754 | else if (! IN_UNI_8_BIT) { | |
| 3755 | *tmpbuf = toUPPER(*s); /* Returns caseless for non-ascii, or | |
| 3756 | * on EBCDIC machines whatever the | |
| 3757 | * native function does */ | |
| 3758 | } | |
| 3759 | else { /* is ucfirst non-UTF-8, not in locale, and cased latin1 */ | |
| 3760 | *tmpbuf = toUPPER_LATIN1_MOD(*s); | |
| 3761 | ||
| 3762 | /* tmpbuf now has the correct title case for all latin1 characters | |
| 3763 | * except for the several ones that have tricky handling. All | |
| 3764 | * of these are mapped by the MOD to the letter below. */ | |
| 3765 | if (*tmpbuf == LATIN_SMALL_LETTER_Y_WITH_DIAERESIS) { | |
| 3766 | ||
| 3767 | /* The length is going to change, with all three of these, so | |
| 3768 | * can't replace just the first character */ | |
| 3769 | inplace = FALSE; | |
| 3770 | ||
| 3771 | /* We use the original to distinguish between these tricky | |
| 3772 | * cases */ | |
| 3773 | if (*s == LATIN_SMALL_LETTER_SHARP_S) { | |
| 3774 | /* Two character title case 'Ss', but can remain non-UTF-8 */ | |
| 3775 | need = slen + 2; | |
| 3776 | *tmpbuf = 'S'; | |
| 3777 | *(tmpbuf + 1) = 's'; /* Assert: length(tmpbuf) >= 2 */ | |
| 3778 | tculen = 2; | |
| 3779 | } | |
| 3780 | else { | |
| d54190f6 | 3781 | |
| 00f254e2 KW |
3782 | /* The other two tricky ones have their title case outside |
| 3783 | * latin1. It is the same as their upper case. */ | |
| 3784 | doing_utf8 = TRUE; | |
| 3785 | STORE_NON_LATIN1_UC(tmpbuf, *s); | |
| 3786 | ||
| 3787 | /* The UTF-8 and UTF-EBCDIC lengths of both these characters | |
| 3788 | * and their upper cases is 2. */ | |
| 3789 | tculen = ulen = 2; | |
| 3790 | ||
| 3791 | /* The entire result will have to be in UTF-8. Assume worst | |
| 3792 | * case sizing in conversion. (all latin1 characters occupy | |
| 3793 | * at most two bytes in utf8) */ | |
| 3794 | convert_source_to_utf8 = TRUE; | |
| 3795 | need = slen * 2 + 1; | |
| 3796 | } | |
| 3797 | } /* End of is one of the three special chars */ | |
| 3798 | } /* End of use Unicode (Latin1) semantics */ | |
| 3799 | } /* End of changing the case of the first character */ | |
| 3800 | ||
| 3801 | /* Here, have the first character's changed case stored in tmpbuf. Ready to | |
| 3802 | * generate the result */ | |
| 3803 | if (inplace) { | |
| 3804 | ||
| 3805 | /* We can convert in place. This means we change just the first | |
| 3806 | * character without disturbing the rest; no need to grow */ | |
| d54190f6 NC |
3807 | dest = source; |
| 3808 | s = d = (U8*)SvPV_force_nomg(source, slen); | |
| 3809 | } else { | |
| 3810 | dTARGET; | |
| 3811 | ||
| 3812 | dest = TARG; | |
| 3813 | ||
| 00f254e2 KW |
3814 | /* Here, we can't convert in place; we earlier calculated how much |
| 3815 | * space we will need, so grow to accommodate that */ | |
| d54190f6 | 3816 | SvUPGRADE(dest, SVt_PV); |
| 3b416f41 | 3817 | d = (U8*)SvGROW(dest, need); |
| d54190f6 NC |
3818 | (void)SvPOK_only(dest); |
| 3819 | ||
| 3820 | SETs(dest); | |
| d54190f6 | 3821 | } |
| 44bc797b | 3822 | |
| d54190f6 | 3823 | if (doing_utf8) { |
| 00f254e2 KW |
3824 | if (! inplace) { |
| 3825 | if (! convert_source_to_utf8) { | |
| 3826 | ||
| 3827 | /* Here both source and dest are in UTF-8, but have to create | |
| 3828 | * the entire output. We initialize the result to be the | |
| 3829 | * title/lower cased first character, and then append the rest | |
| 3830 | * of the string. */ | |
| 3831 | sv_setpvn(dest, (char*)tmpbuf, tculen); | |
| 3832 | if (slen > ulen) { | |
| 3833 | sv_catpvn(dest, (char*)(s + ulen), slen - ulen); | |
| 3834 | } | |
| 3835 | } | |
| 3836 | else { | |
| 3837 | const U8 *const send = s + slen; | |
| 3838 | ||
| 3839 | /* Here the dest needs to be in UTF-8, but the source isn't, | |
| 3840 | * except we earlier UTF-8'd the first character of the source | |
| 3841 | * into tmpbuf. First put that into dest, and then append the | |
| 3842 | * rest of the source, converting it to UTF-8 as we go. */ | |
| 3843 | ||
| 3844 | /* Assert tculen is 2 here because the only two characters that | |
| 3845 | * get to this part of the code have 2-byte UTF-8 equivalents */ | |
| 3846 | *d++ = *tmpbuf; | |
| 3847 | *d++ = *(tmpbuf + 1); | |
| 3848 | s++; /* We have just processed the 1st char */ | |
| 3849 | ||
| 3850 | for (; s < send; s++) { | |
| 3851 | d = uvchr_to_utf8(d, *s); | |
| 3852 | } | |
| 3853 | *d = '\0'; | |
| 3854 | SvCUR_set(dest, d - (U8*)SvPVX_const(dest)); | |
| 3855 | } | |
| d54190f6 | 3856 | SvUTF8_on(dest); |
| a0ed51b3 | 3857 | } |
| 00f254e2 | 3858 | else { /* in-place UTF-8. Just overwrite the first character */ |
| d54190f6 NC |
3859 | Copy(tmpbuf, d, tculen, U8); |
| 3860 | SvCUR_set(dest, need - 1); | |
| a0ed51b3 | 3861 | } |
| a0ed51b3 | 3862 | } |
| 00f254e2 KW |
3863 | else { /* Neither source nor dest are in or need to be UTF-8 */ |
| 3864 | if (slen) { | |
| 2de3dbcc | 3865 | if (IN_LOCALE_RUNTIME) { |
| 31351b04 | 3866 | TAINT; |
| d54190f6 | 3867 | SvTAINTED_on(dest); |
| 31351b04 | 3868 | } |
| 00f254e2 KW |
3869 | if (inplace) { /* in-place, only need to change the 1st char */ |
| 3870 | *d = *tmpbuf; | |
| 3871 | } | |
| 3872 | else { /* Not in-place */ | |
| 3873 | ||
| 3874 | /* Copy the case-changed character(s) from tmpbuf */ | |
| 3875 | Copy(tmpbuf, d, tculen, U8); | |
| 3876 | d += tculen - 1; /* Code below expects d to point to final | |
| 3877 | * character stored */ | |
| 3878 | } | |
| 3879 | } | |
| 3880 | else { /* empty source */ | |
| 3881 | /* See bug #39028: Don't taint if empty */ | |
| d54190f6 NC |
3882 | *d = *s; |
| 3883 | } | |
| 3884 | ||
| 00f254e2 KW |
3885 | /* In a "use bytes" we don't treat the source as UTF-8, but, still want |
| 3886 | * the destination to retain that flag */ | |
| d54190f6 NC |
3887 | if (SvUTF8(source)) |
| 3888 | SvUTF8_on(dest); | |
| 3889 | ||
| 00f254e2 | 3890 | if (!inplace) { /* Finish the rest of the string, unchanged */ |
| d54190f6 NC |
3891 | /* This will copy the trailing NUL */ |
| 3892 | Copy(s + 1, d + 1, slen, U8); | |
| 3893 | SvCUR_set(dest, need - 1); | |
| bbce6d69 | 3894 | } |
| bbce6d69 | 3895 | } |
| 539689e7 FC |
3896 | if (dest != source && SvTAINTED(source)) |
| 3897 | SvTAINT(dest); | |
| d54190f6 | 3898 | SvSETMAGIC(dest); |
| 79072805 LW |
3899 | RETURN; |
| 3900 | } | |
| 3901 | ||
| 67306194 NC |
3902 | /* There's so much setup/teardown code common between uc and lc, I wonder if |
| 3903 | it would be worth merging the two, and just having a switch outside each | |
| 00f254e2 | 3904 | of the three tight loops. There is less and less commonality though */ |
| 79072805 LW |
3905 | PP(pp_uc) |
| 3906 | { | |
| 97aff369 | 3907 | dVAR; |
| 39644a26 | 3908 | dSP; |
| 67306194 | 3909 | SV *source = TOPs; |
| 463ee0b2 | 3910 | STRLEN len; |
| 67306194 NC |
3911 | STRLEN min; |
| 3912 | SV *dest; | |
| 3913 | const U8 *s; | |
| 3914 | U8 *d; | |
| 79072805 | 3915 | |
| 67306194 NC |
3916 | SvGETMAGIC(source); |
| 3917 | ||
| 3918 | if (SvPADTMP(source) && !SvREADONLY(source) && !SvAMAGIC(source) | |
| 00f254e2 KW |
3919 | && SvTEMP(source) && !DO_UTF8(source) |
| 3920 | && (IN_LOCALE_RUNTIME || ! IN_UNI_8_BIT)) { | |
| 3921 | ||
| 3922 | /* We can convert in place. The reason we can't if in UNI_8_BIT is to | |
| 3923 | * make the loop tight, so we overwrite the source with the dest before | |
| 3924 | * looking at it, and we need to look at the original source | |
| 3925 | * afterwards. There would also need to be code added to handle | |
| 3926 | * switching to not in-place in midstream if we run into characters | |
| 3927 | * that change the length. | |
| 3928 | */ | |
| 67306194 NC |
3929 | dest = source; |
| 3930 | s = d = (U8*)SvPV_force_nomg(source, len); | |
| 3931 | min = len + 1; | |
| 3932 | } else { | |
| a0ed51b3 | 3933 | dTARGET; |
| a0ed51b3 | 3934 | |
| 67306194 | 3935 | dest = TARG; |
| 128c9517 | 3936 | |
| 67306194 NC |
3937 | /* The old implementation would copy source into TARG at this point. |
| 3938 | This had the side effect that if source was undef, TARG was now | |
| 3939 | an undefined SV with PADTMP set, and they don't warn inside | |
| 3940 | sv_2pv_flags(). However, we're now getting the PV direct from | |
| 3941 | source, which doesn't have PADTMP set, so it would warn. Hence the | |
| 3942 | little games. */ | |
| 3943 | ||
| 3944 | if (SvOK(source)) { | |
| 3945 | s = (const U8*)SvPV_nomg_const(source, len); | |
| 3946 | } else { | |
| 0a0ffbce RGS |
3947 | if (ckWARN(WARN_UNINITIALIZED)) |
| 3948 | report_uninit(source); | |
| 1eced8f8 | 3949 | s = (const U8*)""; |
| 67306194 | 3950 | len = 0; |
| a0ed51b3 | 3951 | } |
| 67306194 NC |
3952 | min = len + 1; |
| 3953 | ||
| 3954 | SvUPGRADE(dest, SVt_PV); | |
| 3b416f41 | 3955 | d = (U8*)SvGROW(dest, min); |
| 67306194 NC |
3956 | (void)SvPOK_only(dest); |
| 3957 | ||
| 3958 | SETs(dest); | |
| a0ed51b3 | 3959 | } |
| 31351b04 | 3960 | |
| 67306194 NC |
3961 | /* Overloaded values may have toggled the UTF-8 flag on source, so we need |
| 3962 | to check DO_UTF8 again here. */ | |
| 3963 | ||
| 3964 | if (DO_UTF8(source)) { | |
| 3965 | const U8 *const send = s + len; | |
| 3966 | U8 tmpbuf[UTF8_MAXBYTES+1]; | |
| 3967 | ||
| 4c8a458a KW |
3968 | /* All occurrences of these are to be moved to follow any other marks. |
| 3969 | * This is context-dependent. We may not be passed enough context to | |
| 3970 | * move the iota subscript beyond all of them, but we do the best we can | |
| 3971 | * with what we're given. The result is always better than if we | |
| 3972 | * hadn't done this. And, the problem would only arise if we are | |
| 3973 | * passed a character without all its combining marks, which would be | |
| 3974 | * the caller's mistake. The information this is based on comes from a | |
| 3975 | * comment in Unicode SpecialCasing.txt, (and the Standard's text | |
| 3976 | * itself) and so can't be checked properly to see if it ever gets | |
| 3977 | * revised. But the likelihood of it changing is remote */ | |
| 00f254e2 | 3978 | bool in_iota_subscript = FALSE; |
| 00f254e2 | 3979 | |
| 67306194 | 3980 | while (s < send) { |
| 00f254e2 KW |
3981 | if (in_iota_subscript && ! is_utf8_mark(s)) { |
| 3982 | /* A non-mark. Time to output the iota subscript */ | |
| 3983 | #define GREEK_CAPITAL_LETTER_IOTA 0x0399 | |
| 3984 | #define COMBINING_GREEK_YPOGEGRAMMENI 0x0345 | |
| 3985 | ||
| 3986 | CAT_UNI_TO_UTF8_TWO_BYTE(d, GREEK_CAPITAL_LETTER_IOTA); | |
| 3987 | in_iota_subscript = FALSE; | |
| 3988 | } | |
| 00f254e2 KW |
3989 | |
| 3990 | ||
| 3991 | /* See comments at the first instance in this file of this ifdef */ | |
| 3992 | #ifdef GO_AHEAD_AND_BREAK_USER_DEFINED_CASE_MAPPINGS | |
| 67306194 | 3993 | |
| 00f254e2 KW |
3994 | /* If the UTF-8 character is invariant, then it is in the range |
| 3995 | * known by the standard macro; result is only one byte long */ | |
| 3996 | if (UTF8_IS_INVARIANT(*s)) { | |
| 3997 | *d++ = toUPPER(*s); | |
| 3998 | s++; | |
| 3999 | } | |
| 4000 | else if (UTF8_IS_DOWNGRADEABLE_START(*s)) { | |
| 4001 | ||
| 4002 | /* Likewise, if it fits in a byte, its case change is in our | |
| 4003 | * table */ | |
| 81367fea | 4004 | U8 orig = TWO_BYTE_UTF8_TO_UNI(*s, *s++); |
| 00f254e2 KW |
4005 | U8 upper = toUPPER_LATIN1_MOD(orig); |
| 4006 | CAT_TWO_BYTE_UNI_UPPER_MOD(d, orig, upper); | |
| 81367fea | 4007 | s++; |
| 00f254e2 KW |
4008 | } |
| 4009 | else { | |
| 4010 | #else | |
| 4011 | { | |
| 4012 | #endif | |
| 4013 | ||
| 4014 | /* Otherwise, need the general UTF-8 case. Get the changed | |
| 4015 | * case value and copy it to the output buffer */ | |
| 4016 | ||
| 4017 | const STRLEN u = UTF8SKIP(s); | |
| 4018 | STRLEN ulen; | |
| 67306194 | 4019 | |
| 00f254e2 | 4020 | const UV uv = toUPPER_utf8(s, tmpbuf, &ulen); |
| 4c8a458a KW |
4021 | if (uv == GREEK_CAPITAL_LETTER_IOTA |
| 4022 | && utf8_to_uvchr(s, 0) == COMBINING_GREEK_YPOGEGRAMMENI) | |
| 4023 | { | |
| 00f254e2 KW |
4024 | in_iota_subscript = TRUE; |
| 4025 | } | |
| 4026 | else { | |
| 00f254e2 KW |
4027 | if (ulen > u && (SvLEN(dest) < (min += ulen - u))) { |
| 4028 | /* If the eventually required minimum size outgrows | |
| 4029 | * the available space, we need to grow. */ | |
| 4030 | const UV o = d - (U8*)SvPVX_const(dest); | |
| 4031 | ||
| 4032 | /* If someone uppercases one million U+03B0s we | |
| 4033 | * SvGROW() one million times. Or we could try | |
| 4034 | * guessing how much to allocate without allocating too | |
| 4c8a458a KW |
4035 | * much. Such is life. See corresponding comment in |
| 4036 | * lc code for another option */ | |
| 00f254e2 KW |
4037 | SvGROW(dest, min); |
| 4038 | d = (U8*)SvPVX(dest) + o; | |
| 4039 | } | |
| 4040 | Copy(tmpbuf, d, ulen, U8); | |
| 4041 | d += ulen; | |
| 00f254e2 | 4042 | } |
| 00f254e2 | 4043 | s += u; |
| 67306194 | 4044 | } |
| 67306194 | 4045 | } |
| 4c8a458a KW |
4046 | if (in_iota_subscript) { |
| 4047 | CAT_UNI_TO_UTF8_TWO_BYTE(d, GREEK_CAPITAL_LETTER_IOTA); | |
| 4048 | } | |
| 67306194 NC |
4049 | SvUTF8_on(dest); |
| 4050 | *d = '\0'; | |
| 4051 | SvCUR_set(dest, d - (U8*)SvPVX_const(dest)); | |
| 4c8a458a KW |
4052 | } |
| 4053 | else { /* Not UTF-8 */ | |
| 67306194 NC |
4054 | if (len) { |
| 4055 | const U8 *const send = s + len; | |
| 00f254e2 KW |
4056 | |
| 4057 | /* Use locale casing if in locale; regular style if not treating | |
| 4058 | * latin1 as having case; otherwise the latin1 casing. Do the | |
| 4059 | * whole thing in a tight loop, for speed, */ | |
| 2de3dbcc | 4060 | if (IN_LOCALE_RUNTIME) { |
| 31351b04 | 4061 | TAINT; |
| 67306194 NC |
4062 | SvTAINTED_on(dest); |
| 4063 | for (; s < send; d++, s++) | |
| 4064 | *d = toUPPER_LC(*s); | |
| 31351b04 | 4065 | } |
| 00f254e2 KW |
4066 | else if (! IN_UNI_8_BIT) { |
| 4067 | for (; s < send; d++, s++) { | |
| 67306194 | 4068 | *d = toUPPER(*s); |
| 00f254e2 | 4069 | } |
| 31351b04 | 4070 | } |
| 00f254e2 KW |
4071 | else { |
| 4072 | for (; s < send; d++, s++) { | |
| 4073 | *d = toUPPER_LATIN1_MOD(*s); | |
| 4074 | if (*d != LATIN_SMALL_LETTER_Y_WITH_DIAERESIS) continue; | |
| 4075 | ||
| 4076 | /* The mainstream case is the tight loop above. To avoid | |
| 4077 | * extra tests in that, all three characters that require | |
| 4078 | * special handling are mapped by the MOD to the one tested | |
| 4079 | * just above. | |
| 4080 | * Use the source to distinguish between the three cases */ | |
| 4081 | ||
| 4082 | if (*s == LATIN_SMALL_LETTER_SHARP_S) { | |
| 4083 | ||
| 4084 | /* uc() of this requires 2 characters, but they are | |
| 4085 | * ASCII. If not enough room, grow the string */ | |
| 4086 | if (SvLEN(dest) < ++min) { | |
| 4087 | const UV o = d - (U8*)SvPVX_const(dest); | |
| 4088 | SvGROW(dest, min); | |
| 4089 | d = (U8*)SvPVX(dest) + o; | |
| 4090 | } | |
| 4091 | *d++ = 'S'; *d = 'S'; /* upper case is 'SS' */ | |
| 4092 | continue; /* Back to the tight loop; still in ASCII */ | |
| 4093 | } | |
| 4094 | ||
| 4095 | /* The other two special handling characters have their | |
| 4096 | * upper cases outside the latin1 range, hence need to be | |
| 4097 | * in UTF-8, so the whole result needs to be in UTF-8. So, | |
| 4098 | * here we are somewhere in the middle of processing a | |
| 4099 | * non-UTF-8 string, and realize that we will have to convert | |
| 4100 | * the whole thing to UTF-8. What to do? There are | |
| 4101 | * several possibilities. The simplest to code is to | |
| 4102 | * convert what we have so far, set a flag, and continue on | |
| 4103 | * in the loop. The flag would be tested each time through | |
| 4104 | * the loop, and if set, the next character would be | |
| 4105 | * converted to UTF-8 and stored. But, I (khw) didn't want | |
| 4106 | * to slow down the mainstream case at all for this fairly | |
| 4107 | * rare case, so I didn't want to add a test that didn't | |
| 4108 | * absolutely have to be there in the loop, besides the | |
| 4109 | * possibility that it would get too complicated for | |
| 4110 | * optimizers to deal with. Another possibility is to just | |
| 4111 | * give up, convert the source to UTF-8, and restart the | |
| 4112 | * function that way. Another possibility is to convert | |
| 4113 | * both what has already been processed and what is yet to | |
| 4114 | * come separately to UTF-8, then jump into the loop that | |
| 4115 | * handles UTF-8. But the most efficient time-wise of the | |
| 4116 | * ones I could think of is what follows, and turned out to | |
| 4117 | * not require much extra code. */ | |
| 4118 | ||
| 4119 | /* Convert what we have so far into UTF-8, telling the | |
| 4120 | * function that we know it should be converted, and to | |
| 4121 | * allow extra space for what we haven't processed yet. | |
| 4122 | * Assume the worst case space requirements for converting | |
| 4123 | * what we haven't processed so far: that it will require | |
| 4124 | * two bytes for each remaining source character, plus the | |
| 4125 | * NUL at the end. This may cause the string pointer to | |
| 4126 | * move, so re-find it. */ | |
| 4127 | ||
| 4128 | len = d - (U8*)SvPVX_const(dest); | |
| 4129 | SvCUR_set(dest, len); | |
| 4130 | len = sv_utf8_upgrade_flags_grow(dest, | |
| 4131 | SV_GMAGIC|SV_FORCE_UTF8_UPGRADE, | |
| 4132 | (send -s) * 2 + 1); | |
| 4133 | d = (U8*)SvPVX(dest) + len; | |
| 4134 | ||
| 4135 | /* And append the current character's upper case in UTF-8 */ | |
| 4136 | CAT_NON_LATIN1_UC(d, *s); | |
| 4137 | ||
| 4138 | /* Now process the remainder of the source, converting to | |
| 4139 | * upper and UTF-8. If a resulting byte is invariant in | |
| 4140 | * UTF-8, output it as-is, otherwise convert to UTF-8 and | |
| 4141 | * append it to the output. */ | |
| 4142 | ||
| 4143 | s++; | |
| 4144 | for (; s < send; s++) { | |
| 4145 | U8 upper = toUPPER_LATIN1_MOD(*s); | |
| 4146 | if UTF8_IS_INVARIANT(upper) { | |
| 4147 | *d++ = upper; | |
| 4148 | } | |
| 4149 | else { | |
| 4150 | CAT_TWO_BYTE_UNI_UPPER_MOD(d, *s, upper); | |
| 4151 | } | |
| 4152 | } | |
| 4153 | ||
| 4154 | /* Here have processed the whole source; no need to continue | |
| 4155 | * with the outer loop. Each character has been converted | |
| 4156 | * to upper case and converted to UTF-8 */ | |
| 4157 | ||
| 4158 | break; | |
| 4159 | } /* End of processing all latin1-style chars */ | |
| 4160 | } /* End of processing all chars */ | |
| 4161 | } /* End of source is not empty */ | |
| 4162 | ||
| 67306194 | 4163 | if (source != dest) { |
| 00f254e2 | 4164 | *d = '\0'; /* Here d points to 1 after last char, add NUL */ |
| 67306194 NC |
4165 | SvCUR_set(dest, d - (U8*)SvPVX_const(dest)); |
| 4166 | } | |
| 00f254e2 | 4167 | } /* End of isn't utf8 */ |
| 539689e7 FC |
4168 | if (dest != source && SvTAINTED(source)) |
| 4169 | SvTAINT(dest); | |
| 67306194 | 4170 | SvSETMAGIC(dest); |
| 79072805 LW |
4171 | RETURN; |
| 4172 | } | |
| 4173 | ||
| 4174 | PP(pp_lc) | |
| 4175 | { | |
| 97aff369 | 4176 | dVAR; |
| 39644a26 | 4177 | dSP; |
| ec9af7d4 | 4178 | SV *source = TOPs; |
| 463ee0b2 | 4179 | STRLEN len; |
| ec9af7d4 NC |
4180 | STRLEN min; |
| 4181 | SV *dest; | |
| 4182 | const U8 *s; | |
| 4183 | U8 *d; | |
| 79072805 | 4184 | |
| ec9af7d4 NC |
4185 | SvGETMAGIC(source); |
| 4186 | ||
| 4187 | if (SvPADTMP(source) && !SvREADONLY(source) && !SvAMAGIC(source) | |
| 17fa0776 | 4188 | && SvTEMP(source) && !DO_UTF8(source)) { |
| ec9af7d4 | 4189 | |
| 00f254e2 KW |
4190 | /* We can convert in place, as lowercasing anything in the latin1 range |
| 4191 | * (or else DO_UTF8 would have been on) doesn't lengthen it */ | |
| ec9af7d4 NC |
4192 | dest = source; |
| 4193 | s = d = (U8*)SvPV_force_nomg(source, len); | |
| 4194 | min = len + 1; | |
| 4195 | } else { | |
| a0ed51b3 | 4196 | dTARGET; |
| a0ed51b3 | 4197 | |
| ec9af7d4 NC |
4198 | dest = TARG; |
| 4199 | ||
| 4200 | /* The old implementation would copy source into TARG at this point. | |
| 4201 | This had the side effect that if source was undef, TARG was now | |
| 4202 | an undefined SV with PADTMP set, and they don't warn inside | |
| 4203 | sv_2pv_flags(). However, we're now getting the PV direct from | |
| 4204 | source, which doesn't have PADTMP set, so it would warn. Hence the | |
| 4205 | little games. */ | |
| 4206 | ||
| 4207 | if (SvOK(source)) { | |
| 4208 | s = (const U8*)SvPV_nomg_const(source, len); | |
| 4209 | } else { | |
| 0a0ffbce RGS |
4210 | if (ckWARN(WARN_UNINITIALIZED)) |
| 4211 | report_uninit(source); | |
| 1eced8f8 | 4212 | s = (const U8*)""; |
| ec9af7d4 | 4213 | len = 0; |
| a0ed51b3 | 4214 | } |
| ec9af7d4 | 4215 | min = len + 1; |
| 128c9517 | 4216 | |
| ec9af7d4 | 4217 | SvUPGRADE(dest, SVt_PV); |
| 3b416f41 | 4218 | d = (U8*)SvGROW(dest, min); |
| ec9af7d4 NC |
4219 | (void)SvPOK_only(dest); |
| 4220 | ||
| 4221 | SETs(dest); | |
| 4222 | } | |
| 4223 | ||
| 4224 | /* Overloaded values may have toggled the UTF-8 flag on source, so we need | |
| 4225 | to check DO_UTF8 again here. */ | |
| 4226 | ||
| 4227 | if (DO_UTF8(source)) { | |
| 4228 | const U8 *const send = s + len; | |
| 4229 | U8 tmpbuf[UTF8_MAXBYTES_CASE+1]; | |
| 4230 | ||
| 4231 | while (s < send) { | |
| 00f254e2 KW |
4232 | /* See comments at the first instance in this file of this ifdef */ |
| 4233 | #ifdef GO_AHEAD_AND_BREAK_USER_DEFINED_CASE_MAPPINGS | |
| 4234 | if (UTF8_IS_INVARIANT(*s)) { | |
| 89ebb4a3 | 4235 | |
| 00f254e2 | 4236 | /* Invariant characters use the standard mappings compiled in. |
| ec9af7d4 | 4237 | */ |
| 00f254e2 KW |
4238 | *d++ = toLOWER(*s); |
| 4239 | s++; | |
| ec9af7d4 | 4240 | } |
| 00f254e2 | 4241 | else if (UTF8_IS_DOWNGRADEABLE_START(*s)) { |
| 89ebb4a3 | 4242 | |
| 00f254e2 | 4243 | /* As do the ones in the Latin1 range */ |
| 81367fea | 4244 | U8 lower = toLOWER_LATIN1(TWO_BYTE_UTF8_TO_UNI(*s, *s++)); |
| 00f254e2 | 4245 | CAT_UNI_TO_UTF8_TWO_BYTE(d, lower); |
| 81367fea | 4246 | s++; |
| a0ed51b3 | 4247 | } |
| 00f254e2 KW |
4248 | else { |
| 4249 | #endif | |
| 4250 | /* Here, is utf8 not in Latin-1 range, have to go out and get | |
| 4251 | * the mappings from the tables. */ | |
| 4252 | ||
| 4253 | const STRLEN u = UTF8SKIP(s); | |
| 4254 | STRLEN ulen; | |
| 4255 | ||
| 00f254e2 KW |
4256 | #ifndef CONTEXT_DEPENDENT_CASING |
| 4257 | toLOWER_utf8(s, tmpbuf, &ulen); | |
| 4258 | #else | |
| 4c8a458a KW |
4259 | /* This is ifdefd out because it needs more work and thought. It isn't clear |
| 4260 | * that we should do it. | |
| 4261 | * A minor objection is that this is based on a hard-coded rule from the | |
| 4262 | * Unicode standard, and may change, but this is not very likely at all. | |
| 4263 | * mktables should check and warn if it does. | |
| 4264 | * More importantly, if the sigma occurs at the end of the string, we don't | |
| 4265 | * have enough context to know whether it is part of a larger string or going | |
| 4266 | * to be or not. It may be that we are passed a subset of the context, via | |
| 4267 | * a \U...\E, for example, and we could conceivably know the larger context if | |
| 4268 | * code were changed to pass that in. But, if the string passed in is an | |
| 4269 | * intermediate result, and the user concatenates two strings together | |
| 4270 | * after we have made a final sigma, that would be wrong. If the final sigma | |
| 4271 | * occurs in the middle of the string we are working on, then we know that it | |
| 4272 | * should be a final sigma, but otherwise we can't be sure. */ | |
| 00f254e2 KW |
4273 | |
| 4274 | const UV uv = toLOWER_utf8(s, tmpbuf, &ulen); | |
| 4275 | ||
| 4276 | /* If the lower case is a small sigma, it may be that we need | |
| 4277 | * to change it to a final sigma. This happens at the end of | |
| 4278 | * a word that contains more than just this character, and only | |
| 4279 | * when we started with a capital sigma. */ | |
| 4280 | if (uv == UNICODE_GREEK_SMALL_LETTER_SIGMA && | |
| 4281 | s > send - len && /* Makes sure not the first letter */ | |
| 4282 | utf8_to_uvchr(s, 0) == UNICODE_GREEK_CAPITAL_LETTER_SIGMA | |
| 4283 | ) { | |
| 4284 | ||
| 4285 | /* We use the algorithm in: | |
| 4286 | * http://www.unicode.org/versions/Unicode5.0.0/ch03.pdf (C | |
| 4287 | * is a CAPITAL SIGMA): If C is preceded by a sequence | |
| 4288 | * consisting of a cased letter and a case-ignorable | |
| 4289 | * sequence, and C is not followed by a sequence consisting | |
| 4290 | * of a case ignorable sequence and then a cased letter, | |
| 4291 | * then when lowercasing C, C becomes a final sigma */ | |
| 4292 | ||
| 4293 | /* To determine if this is the end of a word, need to peek | |
| 4294 | * ahead. Look at the next character */ | |
| 4295 | const U8 *peek = s + u; | |
| 4296 | ||
| 4297 | /* Skip any case ignorable characters */ | |
| 4298 | while (peek < send && is_utf8_case_ignorable(peek)) { | |
| 4299 | peek += UTF8SKIP(peek); | |
| 4300 | } | |
| 4301 | ||
| 4302 | /* If we reached the end of the string without finding any | |
| 4303 | * non-case ignorable characters, or if the next such one | |
| 4304 | * is not-cased, then we have met the conditions for it | |
| 4305 | * being a final sigma with regards to peek ahead, and so | |
| 4306 | * must do peek behind for the remaining conditions. (We | |
| 4307 | * know there is stuff behind to look at since we tested | |
| 4308 | * above that this isn't the first letter) */ | |
| 4309 | if (peek >= send || ! is_utf8_cased(peek)) { | |
| 4310 | peek = utf8_hop(s, -1); | |
| 4311 | ||
| 4312 | /* Here are at the beginning of the first character | |
| 4313 | * before the original upper case sigma. Keep backing | |
| 4314 | * up, skipping any case ignorable characters */ | |
| 4315 | while (is_utf8_case_ignorable(peek)) { | |
| 4316 | peek = utf8_hop(peek, -1); | |
| 4317 | } | |
| 4318 | ||
| 4319 | /* Here peek points to the first byte of the closest | |
| 4320 | * non-case-ignorable character before the capital | |
| 4321 | * sigma. If it is cased, then by the Unicode | |
| 4322 | * algorithm, we should use a small final sigma instead | |
| 4323 | * of what we have */ | |
| 4324 | if (is_utf8_cased(peek)) { | |
| 4325 | STORE_UNI_TO_UTF8_TWO_BYTE(tmpbuf, | |
| 4326 | UNICODE_GREEK_SMALL_LETTER_FINAL_SIGMA); | |
| 4327 | } | |
| 4328 | } | |
| 4329 | } | |
| 4330 | else { /* Not a context sensitive mapping */ | |
| 4331 | #endif /* End of commented out context sensitive */ | |
| 4332 | if (ulen > u && (SvLEN(dest) < (min += ulen - u))) { | |
| 4333 | ||
| 4334 | /* If the eventually required minimum size outgrows | |
| 4335 | * the available space, we need to grow. */ | |
| 4336 | const UV o = d - (U8*)SvPVX_const(dest); | |
| 4337 | ||
| 4338 | /* If someone lowercases one million U+0130s we | |
| 4339 | * SvGROW() one million times. Or we could try | |
| 4340 | * guessing how much to allocate without allocating too | |
| 4341 | * much. Such is life. Another option would be to | |
| 4342 | * grow an extra byte or two more each time we need to | |
| 4343 | * grow, which would cut down the million to 500K, with | |
| 4344 | * little waste */ | |
| 4345 | SvGROW(dest, min); | |
| 4346 | d = (U8*)SvPVX(dest) + o; | |
| 4347 | } | |
| 4348 | #ifdef CONTEXT_DEPENDENT_CASING | |
| 4349 | } | |
| 4350 | #endif | |
| 4351 | /* Copy the newly lowercased letter to the output buffer we're | |
| 4352 | * building */ | |
| 4353 | Copy(tmpbuf, d, ulen, U8); | |
| 4354 | d += ulen; | |
| 4355 | s += u; | |
| 4356 | #ifdef GO_AHEAD_AND_BREAK_USER_DEFINED_CASE_MAPPINGS | |
| 4357 | } | |
| 4358 | #endif | |
| 4359 | } /* End of looping through the source string */ | |
| ec9af7d4 NC |
4360 | SvUTF8_on(dest); |
| 4361 | *d = '\0'; | |
| 4362 | SvCUR_set(dest, d - (U8*)SvPVX_const(dest)); | |
| 00f254e2 | 4363 | } else { /* Not utf8 */ |
| 31351b04 | 4364 | if (len) { |
| ec9af7d4 | 4365 | const U8 *const send = s + len; |
| 00f254e2 KW |
4366 | |
| 4367 | /* Use locale casing if in locale; regular style if not treating | |
| 4368 | * latin1 as having case; otherwise the latin1 casing. Do the | |
| 4369 | * whole thing in a tight loop, for speed, */ | |
| 2de3dbcc | 4370 | if (IN_LOCALE_RUNTIME) { |
| 31351b04 | 4371 | TAINT; |
| ec9af7d4 NC |
4372 | SvTAINTED_on(dest); |
| 4373 | for (; s < send; d++, s++) | |
| 4374 | *d = toLOWER_LC(*s); | |
| 31351b04 | 4375 | } |
| 00f254e2 KW |
4376 | else if (! IN_UNI_8_BIT) { |
| 4377 | for (; s < send; d++, s++) { | |
| ec9af7d4 | 4378 | *d = toLOWER(*s); |
| 00f254e2 KW |
4379 | } |
| 4380 | } | |
| 4381 | else { | |
| 4382 | for (; s < send; d++, s++) { | |
| 4383 | *d = toLOWER_LATIN1(*s); | |
| 4384 | } | |
| 31351b04 | 4385 | } |
| bbce6d69 | 4386 | } |
| ec9af7d4 NC |
4387 | if (source != dest) { |
| 4388 | *d = '\0'; | |
| 4389 | SvCUR_set(dest, d - (U8*)SvPVX_const(dest)); | |
| 4390 | } | |
| 79072805 | 4391 | } |
| 539689e7 FC |
4392 | if (dest != source && SvTAINTED(source)) |
| 4393 | SvTAINT(dest); | |
| ec9af7d4 | 4394 | SvSETMAGIC(dest); |
| 79072805 LW |
4395 | RETURN; |
| 4396 | } | |
| 4397 | ||
| a0d0e21e | 4398 | PP(pp_quotemeta) |
| 79072805 | 4399 | { |
| 97aff369 | 4400 | dVAR; dSP; dTARGET; |
| 1b6737cc | 4401 | SV * const sv = TOPs; |
| a0d0e21e | 4402 | STRLEN len; |
| 0d46e09a | 4403 | register const char *s = SvPV_const(sv,len); |
| 79072805 | 4404 | |
| 7e2040f0 | 4405 | SvUTF8_off(TARG); /* decontaminate */ |
| a0d0e21e | 4406 | if (len) { |
| 1b6737cc | 4407 | register char *d; |
| 862a34c6 | 4408 | SvUPGRADE(TARG, SVt_PV); |
| c07a80fd | 4409 | SvGROW(TARG, (len * 2) + 1); |
| a0d0e21e | 4410 | d = SvPVX(TARG); |
| 7e2040f0 | 4411 | if (DO_UTF8(sv)) { |
| 0dd2cdef | 4412 | while (len) { |
| fd400ab9 | 4413 | if (UTF8_IS_CONTINUED(*s)) { |
| 0dd2cdef LW |
4414 | STRLEN ulen = UTF8SKIP(s); |
| 4415 | if (ulen > len) | |
| 4416 | ulen = len; | |
| 4417 | len -= ulen; | |
| 4418 | while (ulen--) | |
| 4419 | *d++ = *s++; | |
| 4420 | } | |
| 4421 | else { | |
| 4422 | if (!isALNUM(*s)) | |
| 4423 | *d++ = '\\'; | |
| 4424 | *d++ = *s++; | |
| 4425 | len--; | |
| 4426 | } | |
| 4427 | } | |
| 7e2040f0 | 4428 | SvUTF8_on(TARG); |
| 0dd2cdef LW |
4429 | } |
| 4430 | else { | |
| 4431 | while (len--) { | |
| 4432 | if (!isALNUM(*s)) | |
| 4433 | *d++ = '\\'; | |
| 4434 | *d++ = *s++; | |
| 4435 | } | |
| 79072805 | 4436 | } |
| a0d0e21e | 4437 | *d = '\0'; |
| 349d4f2f | 4438 | SvCUR_set(TARG, d - SvPVX_const(TARG)); |
| 3aa33fe5 | 4439 | (void)SvPOK_only_UTF8(TARG); |
| 79072805 | 4440 | } |
| a0d0e21e LW |
4441 | else |
| 4442 | sv_setpvn(TARG, s, len); | |
| ec93b65f | 4443 | SETTARG; |
| 79072805 LW |
4444 | RETURN; |
| 4445 | } | |
| 4446 | ||
| a0d0e21e | 4447 | /* Arrays. */ |
| 79072805 | 4448 | |
| a0d0e21e | 4449 | PP(pp_aslice) |
| 79072805 | 4450 | { |
| 97aff369 | 4451 | dVAR; dSP; dMARK; dORIGMARK; |
| 502c6561 | 4452 | register AV *const av = MUTABLE_AV(POPs); |
| 1b6737cc | 4453 | register const I32 lval = (PL_op->op_flags & OPf_MOD || LVRET); |
| 79072805 | 4454 | |
| a0d0e21e | 4455 | if (SvTYPE(av) == SVt_PVAV) { |
| fc15ae8f | 4456 | const I32 arybase = CopARYBASE_get(PL_curcop); |
| 4ad10a0b VP |
4457 | const bool localizing = PL_op->op_private & OPpLVAL_INTRO; |
| 4458 | bool can_preserve = FALSE; | |
| 4459 | ||
| 4460 | if (localizing) { | |
| 4461 | MAGIC *mg; | |
| 4462 | HV *stash; | |
| 4463 | ||
| 4464 | can_preserve = SvCANEXISTDELETE(av); | |
| 4465 | } | |
| 4466 | ||
| 4467 | if (lval && localizing) { | |
| 1b6737cc | 4468 | register SV **svp; |
| 748a9306 | 4469 | I32 max = -1; |
| 924508f0 | 4470 | for (svp = MARK + 1; svp <= SP; svp++) { |
| 4ea561bc | 4471 | const I32 elem = SvIV(*svp); |
| 748a9306 LW |
4472 | if (elem > max) |
| 4473 | max = elem; | |
| 4474 | } | |
| 4475 | if (max > AvMAX(av)) | |
| 4476 | av_extend(av, max); | |
| 4477 | } | |
| 4ad10a0b | 4478 | |
| a0d0e21e | 4479 | while (++MARK <= SP) { |
| 1b6737cc | 4480 | register SV **svp; |
| 4ea561bc | 4481 | I32 elem = SvIV(*MARK); |
| 4ad10a0b | 4482 | bool preeminent = TRUE; |
| a0d0e21e | 4483 | |
| 748a9306 LW |
4484 | if (elem > 0) |
| 4485 | elem -= arybase; | |
| 4ad10a0b VP |
4486 | if (localizing && can_preserve) { |
| 4487 | /* If we can determine whether the element exist, | |
| 4488 | * Try to preserve the existenceness of a tied array | |
| 4489 | * element by using EXISTS and DELETE if possible. | |
| 4490 | * Fallback to FETCH and STORE otherwise. */ | |
| 4491 | preeminent = av_exists(av, elem); | |
| 4492 | } | |
| 4493 | ||
| a0d0e21e LW |
4494 | svp = av_fetch(av, elem, lval); |
| 4495 | if (lval) { | |
| 3280af22 | 4496 | if (!svp || *svp == &PL_sv_undef) |
| cea2e8a9 | 4497 | DIE(aTHX_ PL_no_aelem, elem); |
| 4ad10a0b VP |
4498 | if (localizing) { |
| 4499 | if (preeminent) | |
| 4500 | save_aelem(av, elem, svp); | |
| 4501 | else | |
| 4502 | SAVEADELETE(av, elem); | |
| 4503 | } | |
| 79072805 | 4504 | } |
| 3280af22 | 4505 | *MARK = svp ? *svp : &PL_sv_undef; |
| 79072805 LW |
4506 | } |
| 4507 | } | |
| 748a9306 | 4508 | if (GIMME != G_ARRAY) { |
| a0d0e21e | 4509 | MARK = ORIGMARK; |
| 04ab2c87 | 4510 | *++MARK = SP > ORIGMARK ? *SP : &PL_sv_undef; |
| a0d0e21e LW |
4511 | SP = MARK; |
| 4512 | } | |
| 79072805 LW |
4513 | RETURN; |
| 4514 | } | |
| 4515 | ||
| cba5a3b0 DG |
4516 | /* Smart dereferencing for keys, values and each */ |
| 4517 | PP(pp_rkeys) | |
| 4518 | { | |
| 4519 | dVAR; | |
| 4520 | dSP; | |
| 4521 | dPOPss; | |
| 4522 | ||
| 7ac5715b FC |
4523 | SvGETMAGIC(sv); |
| 4524 | ||
| 4525 | if ( | |
| 4526 | !SvROK(sv) | |
| 4527 | || (sv = SvRV(sv), | |
| 4528 | (SvTYPE(sv) != SVt_PVHV && SvTYPE(sv) != SVt_PVAV) | |
| 4529 | || SvOBJECT(sv) | |
| 4530 | ) | |
| 4531 | ) { | |
| 4532 | DIE(aTHX_ | |
| 4533 | "Type of argument to %s must be unblessed hashref or arrayref", | |
| 4c540399 | 4534 | PL_op_desc[PL_op->op_type] ); |
| cba5a3b0 DG |
4535 | } |
| 4536 | ||
| d8065907 FC |
4537 | if (PL_op->op_flags & OPf_SPECIAL && SvTYPE(sv) == SVt_PVAV) |
| 4538 | DIE(aTHX_ | |
| 4539 | "Can't modify %s in %s", | |
| 4540 | PL_op_desc[PL_op->op_type], PL_op_desc[PL_op->op_next->op_type] | |
| 4541 | ); | |
| 4542 | ||
| cba5a3b0 DG |
4543 | /* Delegate to correct function for op type */ |
| 4544 | PUSHs(sv); | |
| 4545 | if (PL_op->op_type == OP_RKEYS || PL_op->op_type == OP_RVALUES) { | |
| 4546 | return (SvTYPE(sv) == SVt_PVHV) ? Perl_do_kv(aTHX) : Perl_pp_akeys(aTHX); | |
| 4547 | } | |
| 4548 | else { | |
| 4549 | return (SvTYPE(sv) == SVt_PVHV) ? Perl_pp_each(aTHX) : Perl_pp_aeach(aTHX); | |
| 4550 | } | |
| 4551 | } | |
| 4552 | ||
| 878d132a NC |
4553 | PP(pp_aeach) |
| 4554 | { | |
| 4555 | dVAR; | |
| 4556 | dSP; | |
| 502c6561 | 4557 | AV *array = MUTABLE_AV(POPs); |
| 878d132a | 4558 | const I32 gimme = GIMME_V; |
| 453d94a9 | 4559 | IV *iterp = Perl_av_iter_p(aTHX_ array); |
| 878d132a NC |
4560 | const IV current = (*iterp)++; |
| 4561 | ||
| 4562 | if (current > av_len(array)) { | |
| 4563 | *iterp = 0; | |
| 4564 | if (gimme == G_SCALAR) | |
| 4565 | RETPUSHUNDEF; | |
| 4566 | else | |
| 4567 | RETURN; | |
| 4568 | } | |
| 4569 | ||
| 4570 | EXTEND(SP, 2); | |
| 4571 | mPUSHi(CopARYBASE_get(PL_curcop) + current); | |
| 4572 | if (gimme == G_ARRAY) { | |
| 4573 | SV **const element = av_fetch(array, current, 0); | |
| 4574 | PUSHs(element ? *element : &PL_sv_undef); | |
| 4575 | } | |
| 4576 | RETURN; | |
| 4577 | } | |
| 4578 | ||
| 4579 | PP(pp_akeys) | |
| 4580 | { | |
| 4581 | dVAR; | |
| 4582 | dSP; | |
| 502c6561 | 4583 | AV *array = MUTABLE_AV(POPs); |
| 878d132a NC |
4584 | const I32 gimme = GIMME_V; |
| 4585 | ||
| 4586 | *Perl_av_iter_p(aTHX_ array) = 0; | |
| 4587 | ||
| 4588 | if (gimme == G_SCALAR) { | |
| 4589 | dTARGET; | |
| 4590 | PUSHi(av_len(array) + 1); | |
| 4591 | } | |
| 4592 | else if (gimme == G_ARRAY) { | |
| 4593 | IV n = Perl_av_len(aTHX_ array); | |
| 4594 | IV i = CopARYBASE_get(PL_curcop); | |
| 4595 | ||
| 4596 | EXTEND(SP, n + 1); | |
| 4597 | ||
| cba5a3b0 | 4598 | if (PL_op->op_type == OP_AKEYS || PL_op->op_type == OP_RKEYS) { |
| 878d132a NC |
4599 | n += i; |
| 4600 | for (; i <= n; i++) { | |
| 4601 | mPUSHi(i); | |
| 4602 | } | |
| 4603 | } | |
| 4604 | else { | |
| 4605 | for (i = 0; i <= n; i++) { | |
| 4606 | SV *const *const elem = Perl_av_fetch(aTHX_ array, i, 0); | |
| 4607 | PUSHs(elem ? *elem : &PL_sv_undef); | |
| 4608 | } | |
| 4609 | } | |
| 4610 | } | |
| 4611 | RETURN; | |
| 4612 | } | |
| 4613 | ||
| 79072805 LW |
4614 | /* Associative arrays. */ |
| 4615 | ||
| 4616 | PP(pp_each) | |
| 4617 | { | |
| 97aff369 | 4618 | dVAR; |
| 39644a26 | 4619 | dSP; |
| 85fbaab2 | 4620 | HV * hash = MUTABLE_HV(POPs); |
| c07a80fd | 4621 | HE *entry; |
| f54cb97a | 4622 | const I32 gimme = GIMME_V; |
| 8ec5e241 | 4623 | |
| c07a80fd | 4624 | PUTBACK; |
| c750a3ec | 4625 | /* might clobber stack_sp */ |
| 6d822dc4 | 4626 | entry = hv_iternext(hash); |
| c07a80fd | 4627 | SPAGAIN; |
| 79072805 | 4628 | |
| 79072805 LW |
4629 | EXTEND(SP, 2); |
| 4630 | if (entry) { | |
| 1b6737cc | 4631 | SV* const sv = hv_iterkeysv(entry); |
| 574c8022 | 4632 | PUSHs(sv); /* won't clobber stack_sp */ |
| 54310121 | 4633 | if (gimme == G_ARRAY) { |
| 59af0135 | 4634 | SV *val; |
| c07a80fd | 4635 | PUTBACK; |
| c750a3ec | 4636 | /* might clobber stack_sp */ |
| 6d822dc4 | 4637 | val = hv_iterval(hash, entry); |
| c07a80fd | 4638 | SPAGAIN; |
| 59af0135 | 4639 | PUSHs(val); |
| 79072805 | 4640 | } |
| 79072805 | 4641 | } |
| 54310121 | 4642 | else if (gimme == G_SCALAR) |
| 79072805 LW |
4643 | RETPUSHUNDEF; |
| 4644 | ||
| 4645 | RETURN; | |
| 4646 | } | |
| 4647 | ||
| 7332a6c4 VP |
4648 | STATIC OP * |
| 4649 | S_do_delete_local(pTHX) | |
| 79072805 | 4650 | { |
| 97aff369 | 4651 | dVAR; |
| 39644a26 | 4652 | dSP; |
| f54cb97a | 4653 | const I32 gimme = GIMME_V; |
| 7332a6c4 VP |
4654 | const MAGIC *mg; |
| 4655 | HV *stash; | |
| 4656 | ||
| 4657 | if (PL_op->op_private & OPpSLICE) { | |
| 4658 | dMARK; dORIGMARK; | |
| 4659 | SV * const osv = POPs; | |
| 4660 | const bool tied = SvRMAGICAL(osv) | |
| 4661 | && mg_find((const SV *)osv, PERL_MAGIC_tied); | |
| 4662 | const bool can_preserve = SvCANEXISTDELETE(osv) | |
| 4663 | || mg_find((const SV *)osv, PERL_MAGIC_env); | |
| 4664 | const U32 type = SvTYPE(osv); | |
| 4665 | if (type == SVt_PVHV) { /* hash element */ | |
| 4666 | HV * const hv = MUTABLE_HV(osv); | |
| 4667 | while (++MARK <= SP) { | |
| 4668 | SV * const keysv = *MARK; | |
| 4669 | SV *sv = NULL; | |
| 4670 | bool preeminent = TRUE; | |
| 4671 | if (can_preserve) | |
| 4672 | preeminent = hv_exists_ent(hv, keysv, 0); | |
| 4673 | if (tied) { | |
| 4674 | HE *he = hv_fetch_ent(hv, keysv, 1, 0); | |
| 4675 | if (he) | |
| 4676 | sv = HeVAL(he); | |
| 4677 | else | |
| 4678 | preeminent = FALSE; | |
| 4679 | } | |
| 4680 | else { | |
| 4681 | sv = hv_delete_ent(hv, keysv, 0, 0); | |
| 4682 | SvREFCNT_inc_simple_void(sv); /* De-mortalize */ | |
| 4683 | } | |
| 4684 | if (preeminent) { | |
| 4685 | save_helem_flags(hv, keysv, &sv, SAVEf_KEEPOLDELEM); | |
| 4686 | if (tied) { | |
| 4687 | *MARK = sv_mortalcopy(sv); | |
| 4688 | mg_clear(sv); | |
| 4689 | } else | |
| 4690 | *MARK = sv; | |
| 4691 | } | |
| 4692 | else { | |
| 4693 | SAVEHDELETE(hv, keysv); | |
| 4694 | *MARK = &PL_sv_undef; | |
| 4695 | } | |
| 4696 | } | |
| 4697 | } | |
| 4698 | else if (type == SVt_PVAV) { /* array element */ | |
| 4699 | if (PL_op->op_flags & OPf_SPECIAL) { | |
| 4700 | AV * const av = MUTABLE_AV(osv); | |
| 4701 | while (++MARK <= SP) { | |
| 4702 | I32 idx = SvIV(*MARK); | |
| 4703 | SV *sv = NULL; | |
| 4704 | bool preeminent = TRUE; | |
| 4705 | if (can_preserve) | |
| 4706 | preeminent = av_exists(av, idx); | |
| 4707 | if (tied) { | |
| 4708 | SV **svp = av_fetch(av, idx, 1); | |
| 4709 | if (svp) | |
| 4710 | sv = *svp; | |
| 4711 | else | |
| 4712 | preeminent = FALSE; | |
| 4713 | } | |
| 4714 | else { | |
| 4715 | sv = av_delete(av, idx, 0); | |
| 4716 | SvREFCNT_inc_simple_void(sv); /* De-mortalize */ | |
| 4717 | } | |
| 4718 | if (preeminent) { | |
| 4719 | save_aelem_flags(av, idx, &sv, SAVEf_KEEPOLDELEM); | |
| 4720 | if (tied) { | |
| 4721 | *MARK = sv_mortalcopy(sv); | |
| 4722 | mg_clear(sv); | |
| 4723 | } else | |
| 4724 | *MARK = sv; | |
| 4725 | } | |
| 4726 | else { | |
| 4727 | SAVEADELETE(av, idx); | |
| 4728 | *MARK = &PL_sv_undef; | |
| 4729 | } | |
| 4730 | } | |
| 4731 | } | |
| 4732 | } | |
| 4733 | else | |
| 4734 | DIE(aTHX_ "Not a HASH reference"); | |
| 4735 | if (gimme == G_VOID) | |
| 4736 | SP = ORIGMARK; | |
| 4737 | else if (gimme == G_SCALAR) { | |
| 4738 | MARK = ORIGMARK; | |
| 4739 | if (SP > MARK) | |
| 4740 | *++MARK = *SP; | |
| 4741 | else | |
| 4742 | *++MARK = &PL_sv_undef; | |
| 4743 | SP = MARK; | |
| 4744 | } | |
| 4745 | } | |
| 4746 | else { | |
| 4747 | SV * const keysv = POPs; | |
| 4748 | SV * const osv = POPs; | |
| 4749 | const bool tied = SvRMAGICAL(osv) | |
| 4750 | && mg_find((const SV *)osv, PERL_MAGIC_tied); | |
| 4751 | const bool can_preserve = SvCANEXISTDELETE(osv) | |
| 4752 | || mg_find((const SV *)osv, PERL_MAGIC_env); | |
| 4753 | const U32 type = SvTYPE(osv); | |
| 4754 | SV *sv = NULL; | |
| 4755 | if (type == SVt_PVHV) { | |
| 4756 | HV * const hv = MUTABLE_HV(osv); | |
| 4757 | bool preeminent = TRUE; | |
| 4758 | if (can_preserve) | |
| 4759 | preeminent = hv_exists_ent(hv, keysv, 0); | |
| 4760 | if (tied) { | |
| 4761 | HE *he = hv_fetch_ent(hv, keysv, 1, 0); | |
| 4762 | if (he) | |
| 4763 | sv = HeVAL(he); | |
| 4764 | else | |
| 4765 | preeminent = FALSE; | |
| 4766 | } | |
| 4767 | else { | |
| 4768 | sv = hv_delete_ent(hv, keysv, 0, 0); | |
| 4769 | SvREFCNT_inc_simple_void(sv); /* De-mortalize */ | |
| 4770 | } | |
| 4771 | if (preeminent) { | |
| 4772 | save_helem_flags(hv, keysv, &sv, SAVEf_KEEPOLDELEM); | |
| 4773 | if (tied) { | |
| 4774 | SV *nsv = sv_mortalcopy(sv); | |
| 4775 | mg_clear(sv); | |
| 4776 | sv = nsv; | |
| 4777 | } | |
| 4778 | } | |
| 4779 | else | |
| 4780 | SAVEHDELETE(hv, keysv); | |
| 4781 | } | |
| 4782 | else if (type == SVt_PVAV) { | |
| 4783 | if (PL_op->op_flags & OPf_SPECIAL) { | |
| 4784 | AV * const av = MUTABLE_AV(osv); | |
| 4785 | I32 idx = SvIV(keysv); | |
| 4786 | bool preeminent = TRUE; | |
| 4787 | if (can_preserve) | |
| 4788 | preeminent = av_exists(av, idx); | |
| 4789 | if (tied) { | |
| 4790 | SV **svp = av_fetch(av, idx, 1); | |
| 4791 | if (svp) | |
| 4792 | sv = *svp; | |
| 4793 | else | |
| 4794 | preeminent = FALSE; | |
| 4795 | } | |
| 4796 | else { | |
| 4797 | sv = av_delete(av, idx, 0); | |
| 4798 | SvREFCNT_inc_simple_void(sv); /* De-mortalize */ | |
| 4799 | } | |
| 4800 | if (preeminent) { | |
| 4801 | save_aelem_flags(av, idx, &sv, SAVEf_KEEPOLDELEM); | |
| 4802 | if (tied) { | |
| 4803 | SV *nsv = sv_mortalcopy(sv); | |
| 4804 | mg_clear(sv); | |
| 4805 | sv = nsv; | |
| 4806 | } | |
| 4807 | } | |
| 4808 | else | |
| 4809 | SAVEADELETE(av, idx); | |
| 4810 | } | |
| 4811 | else | |
| 4812 | DIE(aTHX_ "panic: avhv_delete no longer supported"); | |
| 4813 | } | |
| 4814 | else | |
| 4815 | DIE(aTHX_ "Not a HASH reference"); | |
| 4816 | if (!sv) | |
| 4817 | sv = &PL_sv_undef; | |
| 4818 | if (gimme != G_VOID) | |
| 4819 | PUSHs(sv); | |
| 4820 | } | |
| 4821 | ||
| 4822 | RETURN; | |
| 4823 | } | |
| 4824 | ||
| 4825 | PP(pp_delete) | |
| 4826 | { | |
| 4827 | dVAR; | |
| 4828 | dSP; | |
| 4829 | I32 gimme; | |
| 4830 | I32 discard; | |
| 4831 | ||
| 4832 | if (PL_op->op_private & OPpLVAL_INTRO) | |
| 4833 | return do_delete_local(); | |
| 4834 | ||
| 4835 | gimme = GIMME_V; | |
| 4836 | discard = (gimme == G_VOID) ? G_DISCARD : 0; | |
| 5f05dabc | 4837 | |
| 533c011a | 4838 | if (PL_op->op_private & OPpSLICE) { |
| 5f05dabc | 4839 | dMARK; dORIGMARK; |
| 85fbaab2 | 4840 | HV * const hv = MUTABLE_HV(POPs); |
| 1b6737cc | 4841 | const U32 hvtype = SvTYPE(hv); |
| 01020589 GS |
4842 | if (hvtype == SVt_PVHV) { /* hash element */ |
| 4843 | while (++MARK <= SP) { | |
| 1b6737cc | 4844 | SV * const sv = hv_delete_ent(hv, *MARK, discard, 0); |
| 01020589 GS |
4845 | *MARK = sv ? sv : &PL_sv_undef; |
| 4846 | } | |
| 5f05dabc | 4847 | } |
| 6d822dc4 MS |
4848 | else if (hvtype == SVt_PVAV) { /* array element */ |
| 4849 | if (PL_op->op_flags & OPf_SPECIAL) { | |
| 4850 | while (++MARK <= SP) { | |
| 502c6561 | 4851 | SV * const sv = av_delete(MUTABLE_AV(hv), SvIV(*MARK), discard); |
| 6d822dc4 MS |
4852 | *MARK = sv ? sv : &PL_sv_undef; |
| 4853 | } | |
| 4854 | } | |
| 01020589 GS |
4855 | } |
| 4856 | else | |
| 4857 | DIE(aTHX_ "Not a HASH reference"); | |
| 54310121 | 4858 | if (discard) |
| 4859 | SP = ORIGMARK; | |
| 4860 | else if (gimme == G_SCALAR) { | |
| 5f05dabc | 4861 | MARK = ORIGMARK; |
| 9111c9c0 DM |
4862 | if (SP > MARK) |
| 4863 | *++MARK = *SP; | |
| 4864 | else | |
| 4865 | *++MARK = &PL_sv_undef; | |
| 5f05dabc | 4866 | SP = MARK; |
| 4867 | } | |
| 4868 | } | |
| 4869 | else { | |
| 4870 | SV *keysv = POPs; | |
| 85fbaab2 | 4871 | HV * const hv = MUTABLE_HV(POPs); |
| 295d248e | 4872 | SV *sv = NULL; |
| 97fcbf96 MB |
4873 | if (SvTYPE(hv) == SVt_PVHV) |
| 4874 | sv = hv_delete_ent(hv, keysv, discard, 0); | |
| 01020589 GS |
4875 | else if (SvTYPE(hv) == SVt_PVAV) { |
| 4876 | if (PL_op->op_flags & OPf_SPECIAL) | |
| 502c6561 | 4877 | sv = av_delete(MUTABLE_AV(hv), SvIV(keysv), discard); |
| af288a60 HS |
4878 | else |
| 4879 | DIE(aTHX_ "panic: avhv_delete no longer supported"); | |
| 01020589 | 4880 | } |
| 97fcbf96 | 4881 | else |
| cea2e8a9 | 4882 | DIE(aTHX_ "Not a HASH reference"); |
| 5f05dabc | 4883 | if (!sv) |
| 3280af22 | 4884 | sv = &PL_sv_undef; |
| 54310121 | 4885 | if (!discard) |
| 4886 | PUSHs(sv); | |
| 79072805 | 4887 | } |
| 79072805 LW |
4888 | RETURN; |
| 4889 | } | |
| 4890 | ||
| a0d0e21e | 4891 | PP(pp_exists) |
| 79072805 | 4892 | { |
| 97aff369 | 4893 | dVAR; |
| 39644a26 | 4894 | dSP; |
| afebc493 GS |
4895 | SV *tmpsv; |
| 4896 | HV *hv; | |
| 4897 | ||
| 4898 | if (PL_op->op_private & OPpEXISTS_SUB) { | |
| 4899 | GV *gv; | |
| 0bd48802 | 4900 | SV * const sv = POPs; |
| f2c0649b | 4901 | CV * const cv = sv_2cv(sv, &hv, &gv, 0); |
| afebc493 GS |
4902 | if (cv) |
| 4903 | RETPUSHYES; | |
| 4904 | if (gv && isGV(gv) && GvCV(gv) && !GvCVGEN(gv)) | |
| 4905 | RETPUSHYES; | |
| 4906 | RETPUSHNO; | |
| 4907 | } | |
| 4908 | tmpsv = POPs; | |
| 85fbaab2 | 4909 | hv = MUTABLE_HV(POPs); |
| c750a3ec | 4910 | if (SvTYPE(hv) == SVt_PVHV) { |
| ae77835f | 4911 | if (hv_exists_ent(hv, tmpsv, 0)) |
| c750a3ec | 4912 | RETPUSHYES; |
| ef54e1a4 JH |
4913 | } |
| 4914 | else if (SvTYPE(hv) == SVt_PVAV) { | |
| 01020589 | 4915 | if (PL_op->op_flags & OPf_SPECIAL) { /* array element */ |
| 502c6561 | 4916 | if (av_exists(MUTABLE_AV(hv), SvIV(tmpsv))) |
| 01020589 GS |
4917 | RETPUSHYES; |
| 4918 | } | |
| ef54e1a4 JH |
4919 | } |
| 4920 | else { | |
| cea2e8a9 | 4921 | DIE(aTHX_ "Not a HASH reference"); |
| a0d0e21e | 4922 | } |
| a0d0e21e LW |
4923 | RETPUSHNO; |
| 4924 | } | |
| 79072805 | 4925 | |
| a0d0e21e LW |
4926 | PP(pp_hslice) |
| 4927 | { | |
| 97aff369 | 4928 | dVAR; dSP; dMARK; dORIGMARK; |
| 85fbaab2 | 4929 | register HV * const hv = MUTABLE_HV(POPs); |
| 1b6737cc AL |
4930 | register const I32 lval = (PL_op->op_flags & OPf_MOD || LVRET); |
| 4931 | const bool localizing = PL_op->op_private & OPpLVAL_INTRO; | |
| d30e492c | 4932 | bool can_preserve = FALSE; |
| 79072805 | 4933 | |
| eb85dfd3 DM |
4934 | if (localizing) { |
| 4935 | MAGIC *mg; | |
| 4936 | HV *stash; | |
| 4937 | ||
| d30e492c VP |
4938 | if (SvCANEXISTDELETE(hv) || mg_find((const SV *)hv, PERL_MAGIC_env)) |
| 4939 | can_preserve = TRUE; | |
| eb85dfd3 DM |
4940 | } |
| 4941 | ||
| 6d822dc4 | 4942 | while (++MARK <= SP) { |
| 1b6737cc | 4943 | SV * const keysv = *MARK; |
| 6d822dc4 MS |
4944 | SV **svp; |
| 4945 | HE *he; | |
| d30e492c VP |
4946 | bool preeminent = TRUE; |
| 4947 | ||
| 4948 | if (localizing && can_preserve) { | |
| 4949 | /* If we can determine whether the element exist, | |
| 4950 | * try to preserve the existenceness of a tied hash | |
| 4951 | * element by using EXISTS and DELETE if possible. | |
| 4952 | * Fallback to FETCH and STORE otherwise. */ | |
| 4953 | preeminent = hv_exists_ent(hv, keysv, 0); | |
| 6d822dc4 | 4954 | } |
| eb85dfd3 | 4955 | |
| 6d822dc4 | 4956 | he = hv_fetch_ent(hv, keysv, lval, 0); |
| fe5bfecd | 4957 | svp = he ? &HeVAL(he) : NULL; |
| eb85dfd3 | 4958 | |
| 6d822dc4 MS |
4959 | if (lval) { |
| 4960 | if (!svp || *svp == &PL_sv_undef) { | |
| be2597df | 4961 | DIE(aTHX_ PL_no_helem_sv, SVfARG(keysv)); |
| 6d822dc4 MS |
4962 | } |
| 4963 | if (localizing) { | |
| 7a2e501a | 4964 | if (HvNAME_get(hv) && isGV(*svp)) |
| 159b6efe | 4965 | save_gp(MUTABLE_GV(*svp), !(PL_op->op_flags & OPf_SPECIAL)); |
| 47cfc530 VP |
4966 | else if (preeminent) |
| 4967 | save_helem_flags(hv, keysv, svp, | |
| 4968 | (PL_op->op_flags & OPf_SPECIAL) ? 0 : SAVEf_SETMAGIC); | |
| 4969 | else | |
| 4970 | SAVEHDELETE(hv, keysv); | |
| 6d822dc4 MS |
4971 | } |
| 4972 | } | |
| 4973 | *MARK = svp ? *svp : &PL_sv_undef; | |
| 79072805 | 4974 | } |
| a0d0e21e LW |
4975 | if (GIMME != G_ARRAY) { |
| 4976 | MARK = ORIGMARK; | |
| 04ab2c87 | 4977 | *++MARK = SP > ORIGMARK ? *SP : &PL_sv_undef; |
| a0d0e21e | 4978 | SP = MARK; |
| 79072805 | 4979 | } |
| a0d0e21e LW |
4980 | RETURN; |
| 4981 | } | |
| 4982 | ||
| 4983 | /* List operators. */ | |
| 4984 | ||
| 4985 | PP(pp_list) | |
| 4986 | { | |
| 97aff369 | 4987 | dVAR; dSP; dMARK; |
| a0d0e21e LW |
4988 | if (GIMME != G_ARRAY) { |
| 4989 | if (++MARK <= SP) | |
| 4990 | *MARK = *SP; /* unwanted list, return last item */ | |
| 8990e307 | 4991 | else |
| 3280af22 | 4992 | *MARK = &PL_sv_undef; |
| a0d0e21e | 4993 | SP = MARK; |
| 79072805 | 4994 | } |
| a0d0e21e | 4995 | RETURN; |
| 79072805 LW |
4996 | } |
| 4997 | ||
| a0d0e21e | 4998 | PP(pp_lslice) |
| 79072805 | 4999 | { |
| 97aff369 | 5000 | dVAR; |
| 39644a26 | 5001 | dSP; |
| 1b6737cc AL |
5002 | SV ** const lastrelem = PL_stack_sp; |
| 5003 | SV ** const lastlelem = PL_stack_base + POPMARK; | |
| 5004 | SV ** const firstlelem = PL_stack_base + POPMARK + 1; | |
| 5005 | register SV ** const firstrelem = lastlelem + 1; | |
| fc15ae8f | 5006 | const I32 arybase = CopARYBASE_get(PL_curcop); |
| 42e73ed0 | 5007 | I32 is_something_there = FALSE; |
| 1b6737cc AL |
5008 | |
| 5009 | register const I32 max = lastrelem - lastlelem; | |
| a0d0e21e | 5010 | register SV **lelem; |
| a0d0e21e LW |
5011 | |
| 5012 | if (GIMME != G_ARRAY) { | |
| 4ea561bc | 5013 | I32 ix = SvIV(*lastlelem); |
| 748a9306 LW |
5014 | if (ix < 0) |
| 5015 | ix += max; | |
| 5016 | else | |
| 5017 | ix -= arybase; | |
| a0d0e21e | 5018 | if (ix < 0 || ix >= max) |
| 3280af22 | 5019 | *firstlelem = &PL_sv_undef; |
| a0d0e21e LW |
5020 | else |
| 5021 | *firstlelem = firstrelem[ix]; | |
| 5022 | SP = firstlelem; | |
| 5023 | RETURN; | |
| 5024 | } | |
| 5025 | ||
| 5026 | if (max == 0) { | |
| 5027 | SP = firstlelem - 1; | |
| 5028 | RETURN; | |
| 5029 | } | |
| 5030 | ||
| 5031 | for (lelem = firstlelem; lelem <= lastlelem; lelem++) { | |
| 4ea561bc | 5032 | I32 ix = SvIV(*lelem); |
| c73bf8e3 | 5033 | if (ix < 0) |
| a0d0e21e | 5034 | ix += max; |
| b13b2135 | 5035 | else |
| 748a9306 | 5036 | ix -= arybase; |
| c73bf8e3 HS |
5037 | if (ix < 0 || ix >= max) |
| 5038 | *lelem = &PL_sv_undef; | |
| 5039 | else { | |
| 5040 | is_something_there = TRUE; | |
| 5041 | if (!(*lelem = firstrelem[ix])) | |
| 3280af22 | 5042 | *lelem = &PL_sv_undef; |
| 748a9306 | 5043 | } |
| 79072805 | 5044 | } |
| 4633a7c4 LW |
5045 | if (is_something_there) |
| 5046 | SP = lastlelem; | |
| 5047 | else | |
| 5048 | SP = firstlelem - 1; | |
| 79072805 LW |
5049 | RETURN; |
| 5050 | } | |
| 5051 | ||
| a0d0e21e LW |
5052 | PP(pp_anonlist) |
| 5053 | { | |
| 97aff369 | 5054 | dVAR; dSP; dMARK; dORIGMARK; |
| 1b6737cc | 5055 | const I32 items = SP - MARK; |
| ad64d0ec | 5056 | SV * const av = MUTABLE_SV(av_make(items, MARK+1)); |
| 44a8e56a | 5057 | SP = ORIGMARK; /* av_make() might realloc stack_sp */ |
| 6e449a3a MHM |
5058 | mXPUSHs((PL_op->op_flags & OPf_SPECIAL) |
| 5059 | ? newRV_noinc(av) : av); | |
| a0d0e21e LW |
5060 | RETURN; |
| 5061 | } | |
| 5062 | ||
| 5063 | PP(pp_anonhash) | |
| 79072805 | 5064 | { |
| 97aff369 | 5065 | dVAR; dSP; dMARK; dORIGMARK; |
| 78c72037 | 5066 | HV* const hv = newHV(); |
| a0d0e21e LW |
5067 | |
| 5068 | while (MARK < SP) { | |
| 1b6737cc | 5069 | SV * const key = *++MARK; |
| 561b68a9 | 5070 | SV * const val = newSV(0); |
| a0d0e21e LW |
5071 | if (MARK < SP) |
| 5072 | sv_setsv(val, *++MARK); | |
| a2a5de95 NC |
5073 | else |
| 5074 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), "Odd number of elements in anonymous hash"); | |
| f12c7020 | 5075 | (void)hv_store_ent(hv,key,val,0); |
| 79072805 | 5076 | } |
| a0d0e21e | 5077 | SP = ORIGMARK; |
| 6e449a3a | 5078 | mXPUSHs((PL_op->op_flags & OPf_SPECIAL) |
| ad64d0ec | 5079 | ? newRV_noinc(MUTABLE_SV(hv)) : MUTABLE_SV(hv)); |
| 79072805 LW |
5080 | RETURN; |
| 5081 | } | |
| 5082 | ||
| d4fc4415 FC |
5083 | static AV * |
| 5084 | S_deref_plain_array(pTHX_ AV *ary) | |
| 5085 | { | |
| 5086 | if (SvTYPE(ary) == SVt_PVAV) return ary; | |
| d2d95e13 | 5087 | SvGETMAGIC((SV *)ary); |
| d4fc4415 FC |
5088 | if (!SvROK(ary) || SvTYPE(SvRV(ary)) != SVt_PVAV) |
| 5089 | Perl_die(aTHX_ "Not an ARRAY reference"); | |
| 5090 | else if (SvOBJECT(SvRV(ary))) | |
| 5091 | Perl_die(aTHX_ "Not an unblessed ARRAY reference"); | |
| 5092 | return (AV *)SvRV(ary); | |
| 5093 | } | |
| 5094 | ||
| 5095 | #if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) | |
| 5096 | # define DEREF_PLAIN_ARRAY(ary) \ | |
| 5097 | ({ \ | |
| 5098 | AV *aRrRay = ary; \ | |
| 5099 | SvTYPE(aRrRay) == SVt_PVAV \ | |
| 5100 | ? aRrRay \ | |
| 5101 | : S_deref_plain_array(aTHX_ aRrRay); \ | |
| 5102 | }) | |
| 5103 | #else | |
| 5104 | # define DEREF_PLAIN_ARRAY(ary) \ | |
| 5105 | ( \ | |
| 3b0f6d32 | 5106 | PL_Sv = (SV *)(ary), \ |
| d4fc4415 FC |
5107 | SvTYPE(PL_Sv) == SVt_PVAV \ |
| 5108 | ? (AV *)PL_Sv \ | |
| 3b0f6d32 | 5109 | : S_deref_plain_array(aTHX_ (AV *)PL_Sv) \ |
| d4fc4415 FC |
5110 | ) |
| 5111 | #endif | |
| 5112 | ||
| a0d0e21e | 5113 | PP(pp_splice) |
| 79072805 | 5114 | { |
| 27da23d5 | 5115 | dVAR; dSP; dMARK; dORIGMARK; |
| 5cd408a2 | 5116 | int num_args = (SP - MARK); |
| d4fc4415 | 5117 | register AV *ary = DEREF_PLAIN_ARRAY(MUTABLE_AV(*++MARK)); |
| a0d0e21e LW |
5118 | register SV **src; |
| 5119 | register SV **dst; | |
| 5120 | register I32 i; | |
| 5121 | register I32 offset; | |
| 5122 | register I32 length; | |
| 5123 | I32 newlen; | |
| 5124 | I32 after; | |
| 5125 | I32 diff; | |
| ad64d0ec | 5126 | const MAGIC * const mg = SvTIED_mg((const SV *)ary, PERL_MAGIC_tied); |
| 93965878 | 5127 | |
| 1b6737cc | 5128 | if (mg) { |
| af71faff NC |
5129 | return Perl_tied_method(aTHX_ "SPLICE", mark - 1, MUTABLE_SV(ary), mg, |
| 5130 | GIMME_V | TIED_METHOD_ARGUMENTS_ON_STACK, | |
| 5131 | sp - mark); | |
| 93965878 | 5132 | } |
| 79072805 | 5133 | |
| a0d0e21e | 5134 | SP++; |
| 79072805 | 5135 | |
| a0d0e21e | 5136 | if (++MARK < SP) { |
| 4ea561bc | 5137 | offset = i = SvIV(*MARK); |
| a0d0e21e | 5138 | if (offset < 0) |
| 93965878 | 5139 | offset += AvFILLp(ary) + 1; |
| a0d0e21e | 5140 | else |
| fc15ae8f | 5141 | offset -= CopARYBASE_get(PL_curcop); |
| 84902520 | 5142 | if (offset < 0) |
| cea2e8a9 | 5143 | DIE(aTHX_ PL_no_aelem, i); |
| a0d0e21e LW |
5144 | if (++MARK < SP) { |
| 5145 | length = SvIVx(*MARK++); | |
| 48cdf507 GA |
5146 | if (length < 0) { |
| 5147 | length += AvFILLp(ary) - offset + 1; | |
| 5148 | if (length < 0) | |
| 5149 | length = 0; | |
| 5150 | } | |
| 79072805 LW |
5151 | } |
| 5152 | else | |
| a0d0e21e | 5153 | length = AvMAX(ary) + 1; /* close enough to infinity */ |
| 79072805 | 5154 | } |
| a0d0e21e LW |
5155 | else { |
| 5156 | offset = 0; | |
| 5157 | length = AvMAX(ary) + 1; | |
| 5158 | } | |
| 8cbc2e3b | 5159 | if (offset > AvFILLp(ary) + 1) { |
| 5cd408a2 EB |
5160 | if (num_args > 2) |
| 5161 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), "splice() offset past end of array" ); | |
| 93965878 | 5162 | offset = AvFILLp(ary) + 1; |
| 8cbc2e3b | 5163 | } |
| 93965878 | 5164 | after = AvFILLp(ary) + 1 - (offset + length); |
| a0d0e21e LW |
5165 | if (after < 0) { /* not that much array */ |
| 5166 | length += after; /* offset+length now in array */ | |
| 5167 | after = 0; | |
| 5168 | if (!AvALLOC(ary)) | |
| 5169 | av_extend(ary, 0); | |
| 5170 | } | |
| 5171 | ||
| 5172 | /* At this point, MARK .. SP-1 is our new LIST */ | |
| 5173 | ||
| 5174 | newlen = SP - MARK; | |
| 5175 | diff = newlen - length; | |
| 13d7cbc1 GS |
5176 | if (newlen && !AvREAL(ary) && AvREIFY(ary)) |
| 5177 | av_reify(ary); | |
| a0d0e21e | 5178 | |
| 50528de0 WL |
5179 | /* make new elements SVs now: avoid problems if they're from the array */ |
| 5180 | for (dst = MARK, i = newlen; i; i--) { | |
| 1b6737cc | 5181 | SV * const h = *dst; |
| f2b990bf | 5182 | *dst++ = newSVsv(h); |
| 50528de0 WL |
5183 | } |
| 5184 | ||
| a0d0e21e | 5185 | if (diff < 0) { /* shrinking the area */ |
| 95b63a38 | 5186 | SV **tmparyval = NULL; |
| a0d0e21e | 5187 | if (newlen) { |
| a02a5408 | 5188 | Newx(tmparyval, newlen, SV*); /* so remember insertion */ |
| a0d0e21e | 5189 | Copy(MARK, tmparyval, newlen, SV*); |
| 79072805 | 5190 | } |
| a0d0e21e LW |
5191 | |
| 5192 | MARK = ORIGMARK + 1; | |
| 5193 | if (GIMME == G_ARRAY) { /* copy return vals to stack */ | |
| 5194 | MEXTEND(MARK, length); | |
| 5195 | Copy(AvARRAY(ary)+offset, MARK, length, SV*); | |
| 5196 | if (AvREAL(ary)) { | |
| bbce6d69 | 5197 | EXTEND_MORTAL(length); |
| 36477c24 | 5198 | for (i = length, dst = MARK; i; i--) { |
| 486ec47a | 5199 | sv_2mortal(*dst); /* free them eventually */ |
| 36477c24 | 5200 | dst++; |
| 5201 | } | |
| a0d0e21e LW |
5202 | } |
| 5203 | MARK += length - 1; | |
| 79072805 | 5204 | } |
| a0d0e21e LW |
5205 | else { |
| 5206 | *MARK = AvARRAY(ary)[offset+length-1]; | |
| 5207 | if (AvREAL(ary)) { | |
| d689ffdd | 5208 | sv_2mortal(*MARK); |
| a0d0e21e LW |
5209 | for (i = length - 1, dst = &AvARRAY(ary)[offset]; i > 0; i--) |
| 5210 | SvREFCNT_dec(*dst++); /* free them now */ | |
| 79072805 | 5211 | } |
| a0d0e21e | 5212 | } |
| 93965878 | 5213 | AvFILLp(ary) += diff; |
| a0d0e21e LW |
5214 | |
| 5215 | /* pull up or down? */ | |
| 5216 | ||
| 5217 | if (offset < after) { /* easier to pull up */ | |
| 5218 | if (offset) { /* esp. if nothing to pull */ | |
| 5219 | src = &AvARRAY(ary)[offset-1]; | |
| 5220 | dst = src - diff; /* diff is negative */ | |
| 5221 | for (i = offset; i > 0; i--) /* can't trust Copy */ | |
| 5222 | *dst-- = *src--; | |
| 79072805 | 5223 | } |
| a0d0e21e | 5224 | dst = AvARRAY(ary); |
| 9c6bc640 | 5225 | AvARRAY(ary) = AvARRAY(ary) - diff; /* diff is negative */ |
| a0d0e21e LW |
5226 | AvMAX(ary) += diff; |
| 5227 | } | |
| 5228 | else { | |
| 5229 | if (after) { /* anything to pull down? */ | |
| 5230 | src = AvARRAY(ary) + offset + length; | |
| 5231 | dst = src + diff; /* diff is negative */ | |
| 5232 | Move(src, dst, after, SV*); | |
| 79072805 | 5233 | } |
| 93965878 | 5234 | dst = &AvARRAY(ary)[AvFILLp(ary)+1]; |
| a0d0e21e LW |
5235 | /* avoid later double free */ |
| 5236 | } | |
| 5237 | i = -diff; | |
| 5238 | while (i) | |
| 3280af22 | 5239 | dst[--i] = &PL_sv_undef; |
| a0d0e21e LW |
5240 | |
| 5241 | if (newlen) { | |
| 50528de0 | 5242 | Copy( tmparyval, AvARRAY(ary) + offset, newlen, SV* ); |
| a0d0e21e LW |
5243 | Safefree(tmparyval); |
| 5244 | } | |
| 5245 | } | |
| 5246 | else { /* no, expanding (or same) */ | |
| d3961450 | 5247 | SV** tmparyval = NULL; |
| a0d0e21e | 5248 | if (length) { |
| a02a5408 | 5249 | Newx(tmparyval, length, SV*); /* so remember deletion */ |
| a0d0e21e LW |
5250 | Copy(AvARRAY(ary)+offset, tmparyval, length, SV*); |
| 5251 | } | |
| 5252 | ||
| 5253 | if (diff > 0) { /* expanding */ | |
| a0d0e21e | 5254 | /* push up or down? */ |
| a0d0e21e LW |
5255 | if (offset < after && diff <= AvARRAY(ary) - AvALLOC(ary)) { |
| 5256 | if (offset) { | |
| 5257 | src = AvARRAY(ary); | |
| 5258 | dst = src - diff; | |
| 5259 | Move(src, dst, offset, SV*); | |
| 79072805 | 5260 | } |
| 9c6bc640 | 5261 | AvARRAY(ary) = AvARRAY(ary) - diff;/* diff is positive */ |
| a0d0e21e | 5262 | AvMAX(ary) += diff; |
| 93965878 | 5263 | AvFILLp(ary) += diff; |
| 79072805 LW |
5264 | } |
| 5265 | else { | |
| 93965878 NIS |
5266 | if (AvFILLp(ary) + diff >= AvMAX(ary)) /* oh, well */ |
| 5267 | av_extend(ary, AvFILLp(ary) + diff); | |
| 5268 | AvFILLp(ary) += diff; | |
| a0d0e21e LW |
5269 | |
| 5270 | if (after) { | |
| 93965878 | 5271 | dst = AvARRAY(ary) + AvFILLp(ary); |
| a0d0e21e LW |
5272 | src = dst - diff; |
| 5273 | for (i = after; i; i--) { | |
| 5274 | *dst-- = *src--; | |
| 5275 | } | |
| 79072805 LW |
5276 | } |
| 5277 | } | |
| a0d0e21e LW |
5278 | } |
| 5279 | ||
| 50528de0 WL |
5280 | if (newlen) { |
| 5281 | Copy( MARK, AvARRAY(ary) + offset, newlen, SV* ); | |
| a0d0e21e | 5282 | } |
| 50528de0 | 5283 | |
| a0d0e21e LW |
5284 | MARK = ORIGMARK + 1; |
| 5285 | if (GIMME == G_ARRAY) { /* copy return vals to stack */ | |
| 5286 | if (length) { | |
| 5287 | Copy(tmparyval, MARK, length, SV*); | |
| 5288 | if (AvREAL(ary)) { | |
| bbce6d69 | 5289 | EXTEND_MORTAL(length); |
| 36477c24 | 5290 | for (i = length, dst = MARK; i; i--) { |
| 486ec47a | 5291 | sv_2mortal(*dst); /* free them eventually */ |
| 36477c24 | 5292 | dst++; |
| 5293 | } | |
| 79072805 LW |
5294 | } |
| 5295 | } | |
| a0d0e21e LW |
5296 | MARK += length - 1; |
| 5297 | } | |
| 5298 | else if (length--) { | |
| 5299 | *MARK = tmparyval[length]; | |
| 5300 | if (AvREAL(ary)) { | |
| d689ffdd | 5301 | sv_2mortal(*MARK); |
| a0d0e21e LW |
5302 | while (length-- > 0) |
| 5303 | SvREFCNT_dec(tmparyval[length]); | |
| 79072805 | 5304 | } |
| 79072805 | 5305 | } |
| a0d0e21e | 5306 | else |
| 3280af22 | 5307 | *MARK = &PL_sv_undef; |
| d3961450 | 5308 | Safefree(tmparyval); |
| 79072805 | 5309 | } |
| 474af990 FR |
5310 | |
| 5311 | if (SvMAGICAL(ary)) | |
| 5312 | mg_set(MUTABLE_SV(ary)); | |
| 5313 | ||
| a0d0e21e | 5314 | SP = MARK; |
| 79072805 LW |
5315 | RETURN; |
| 5316 | } | |
| 5317 | ||
| a0d0e21e | 5318 | PP(pp_push) |
| 79072805 | 5319 | { |
| 27da23d5 | 5320 | dVAR; dSP; dMARK; dORIGMARK; dTARGET; |
| d4fc4415 | 5321 | register AV * const ary = DEREF_PLAIN_ARRAY(MUTABLE_AV(*++MARK)); |
| ad64d0ec | 5322 | const MAGIC * const mg = SvTIED_mg((const SV *)ary, PERL_MAGIC_tied); |
| 79072805 | 5323 | |
| 1b6737cc | 5324 | if (mg) { |
| ad64d0ec | 5325 | *MARK-- = SvTIED_obj(MUTABLE_SV(ary), mg); |
| 93965878 NIS |
5326 | PUSHMARK(MARK); |
| 5327 | PUTBACK; | |
| d343c3ef | 5328 | ENTER_with_name("call_PUSH"); |
| 864dbfa3 | 5329 | call_method("PUSH",G_SCALAR|G_DISCARD); |
| d343c3ef | 5330 | LEAVE_with_name("call_PUSH"); |
| 93965878 | 5331 | SPAGAIN; |
| 93965878 | 5332 | } |
| a60c0954 | 5333 | else { |
| 89c14e2e | 5334 | PL_delaymagic = DM_DELAY; |
| a60c0954 | 5335 | for (++MARK; MARK <= SP; MARK++) { |
| 561b68a9 | 5336 | SV * const sv = newSV(0); |
| a60c0954 NIS |
5337 | if (*MARK) |
| 5338 | sv_setsv(sv, *MARK); | |
| 0a75904b | 5339 | av_store(ary, AvFILLp(ary)+1, sv); |
| a60c0954 | 5340 | } |
| 354b0578 | 5341 | if (PL_delaymagic & DM_ARRAY_ISA) |
| ad64d0ec | 5342 | mg_set(MUTABLE_SV(ary)); |
| 89c14e2e BB |
5343 | |
| 5344 | PL_delaymagic = 0; | |
| 6eeabd23 VP |
5345 | } |
| 5346 | SP = ORIGMARK; | |
| 5347 | if (OP_GIMME(PL_op, 0) != G_VOID) { | |
| 5348 | PUSHi( AvFILL(ary) + 1 ); | |
| 79072805 | 5349 | } |
| 79072805 LW |
5350 | RETURN; |
| 5351 | } | |
| 5352 | ||
| a0d0e21e | 5353 | PP(pp_shift) |
| 79072805 | 5354 | { |
| 97aff369 | 5355 | dVAR; |
| 39644a26 | 5356 | dSP; |
| 538f5756 | 5357 | AV * const av = PL_op->op_flags & OPf_SPECIAL |
| d4fc4415 | 5358 | ? MUTABLE_AV(GvAV(PL_defgv)) : DEREF_PLAIN_ARRAY(MUTABLE_AV(POPs)); |
| 789b4bc9 | 5359 | SV * const sv = PL_op->op_type == OP_SHIFT ? av_shift(av) : av_pop(av); |
| 79072805 | 5360 | EXTEND(SP, 1); |
| c2b4a044 | 5361 | assert (sv); |
| d689ffdd | 5362 | if (AvREAL(av)) |
| a0d0e21e LW |
5363 | (void)sv_2mortal(sv); |
| 5364 | PUSHs(sv); | |
| 79072805 | 5365 | RETURN; |
| 79072805 LW |
5366 | } |
| 5367 | ||
| a0d0e21e | 5368 | PP(pp_unshift) |
| 79072805 | 5369 | { |
| 27da23d5 | 5370 | dVAR; dSP; dMARK; dORIGMARK; dTARGET; |
| d4fc4415 | 5371 | register AV *ary = DEREF_PLAIN_ARRAY(MUTABLE_AV(*++MARK)); |
| ad64d0ec | 5372 | const MAGIC * const mg = SvTIED_mg((const SV *)ary, PERL_MAGIC_tied); |
| 93965878 | 5373 | |
| 1b6737cc | 5374 | if (mg) { |
| ad64d0ec | 5375 | *MARK-- = SvTIED_obj(MUTABLE_SV(ary), mg); |
| 7fd66d9d | 5376 | PUSHMARK(MARK); |
| 93965878 | 5377 | PUTBACK; |
| d343c3ef | 5378 | ENTER_with_name("call_UNSHIFT"); |
| 864dbfa3 | 5379 | call_method("UNSHIFT",G_SCALAR|G_DISCARD); |
| d343c3ef | 5380 | LEAVE_with_name("call_UNSHIFT"); |
| 93965878 | 5381 | SPAGAIN; |
| 93965878 | 5382 | } |
| a60c0954 | 5383 | else { |
| 1b6737cc | 5384 | register I32 i = 0; |
| a60c0954 NIS |
5385 | av_unshift(ary, SP - MARK); |
| 5386 | while (MARK < SP) { | |
| 1b6737cc | 5387 | SV * const sv = newSVsv(*++MARK); |
| a60c0954 NIS |
5388 | (void)av_store(ary, i++, sv); |
| 5389 | } | |
| 79072805 | 5390 | } |
| a0d0e21e | 5391 | SP = ORIGMARK; |
| 6eeabd23 | 5392 | if (OP_GIMME(PL_op, 0) != G_VOID) { |
| 5658d0a9 LR |
5393 | PUSHi( AvFILL(ary) + 1 ); |
| 5394 | } | |
| 79072805 | 5395 | RETURN; |
| 79072805 LW |
5396 | } |
| 5397 | ||
| a0d0e21e | 5398 | PP(pp_reverse) |
| 79072805 | 5399 | { |
| 97aff369 | 5400 | dVAR; dSP; dMARK; |
| 79072805 | 5401 | |
| a0d0e21e | 5402 | if (GIMME == G_ARRAY) { |
| 484c818f VP |
5403 | if (PL_op->op_private & OPpREVERSE_INPLACE) { |
| 5404 | AV *av; | |
| 5405 | ||
| 5406 | /* See pp_sort() */ | |
| 5407 | assert( MARK+1 == SP && *SP && SvTYPE(*SP) == SVt_PVAV); | |
| 5408 | (void)POPMARK; /* remove mark associated with ex-OP_AASSIGN */ | |
| 5409 | av = MUTABLE_AV((*SP)); | |
| 5410 | /* In-place reversing only happens in void context for the array | |
| 5411 | * assignment. We don't need to push anything on the stack. */ | |
| 5412 | SP = MARK; | |
| 5413 | ||
| 5414 | if (SvMAGICAL(av)) { | |
| 5415 | I32 i, j; | |
| 5416 | register SV *tmp = sv_newmortal(); | |
| 5417 | /* For SvCANEXISTDELETE */ | |
| 5418 | HV *stash; | |
| 5419 | const MAGIC *mg; | |
| 5420 | bool can_preserve = SvCANEXISTDELETE(av); | |
| 5421 | ||
| 5422 | for (i = 0, j = av_len(av); i < j; ++i, --j) { | |
| 5423 | register SV *begin, *end; | |
| 5424 | ||
| 5425 | if (can_preserve) { | |
| 5426 | if (!av_exists(av, i)) { | |
| 5427 | if (av_exists(av, j)) { | |
| 5428 | register SV *sv = av_delete(av, j, 0); | |
| 5429 | begin = *av_fetch(av, i, TRUE); | |
| 5430 | sv_setsv_mg(begin, sv); | |
| 5431 | } | |
| 5432 | continue; | |
| 5433 | } | |
| 5434 | else if (!av_exists(av, j)) { | |
| 5435 | register SV *sv = av_delete(av, i, 0); | |
| 5436 | end = *av_fetch(av, j, TRUE); | |
| 5437 | sv_setsv_mg(end, sv); | |
| 5438 | continue; | |
| 5439 | } | |
| 5440 | } | |
| 5441 | ||
| 5442 | begin = *av_fetch(av, i, TRUE); | |
| 5443 | end = *av_fetch(av, j, TRUE); | |
| 5444 | sv_setsv(tmp, begin); | |
| 5445 | sv_setsv_mg(begin, end); | |
| 5446 | sv_setsv_mg(end, tmp); | |
| 5447 | } | |
| 5448 | } | |
| 5449 | else { | |
| 5450 | SV **begin = AvARRAY(av); | |
| 484c818f | 5451 | |
| 95a26d8e VP |
5452 | if (begin) { |
| 5453 | SV **end = begin + AvFILLp(av); | |
| 5454 | ||
| 5455 | while (begin < end) { | |
| 5456 | register SV * const tmp = *begin; | |
| 5457 | *begin++ = *end; | |
| 5458 | *end-- = tmp; | |
| 5459 | } | |
| 484c818f VP |
5460 | } |
| 5461 | } | |
| 5462 | } | |
| 5463 | else { | |
| 5464 | SV **oldsp = SP; | |
| 5465 | MARK++; | |
| 5466 | while (MARK < SP) { | |
| 5467 | register SV * const tmp = *MARK; | |
| 5468 | *MARK++ = *SP; | |
| 5469 | *SP-- = tmp; | |
| 5470 | } | |
| 5471 | /* safe as long as stack cannot get extended in the above */ | |
| 5472 | SP = oldsp; | |
| a0d0e21e | 5473 | } |
| 79072805 LW |
5474 | } |
| 5475 | else { | |
| a0d0e21e LW |
5476 | register char *up; |
| 5477 | register char *down; | |
| 5478 | register I32 tmp; | |
| 5479 | dTARGET; | |
| 5480 | STRLEN len; | |
| 79072805 | 5481 | |
| 7e2040f0 | 5482 | SvUTF8_off(TARG); /* decontaminate */ |
| a0d0e21e | 5483 | if (SP - MARK > 1) |
| 3280af22 | 5484 | do_join(TARG, &PL_sv_no, MARK, SP); |
| 1e21d011 | 5485 | else { |
| 789bd863 | 5486 | sv_setsv(TARG, SP > MARK ? *SP : find_rundefsv()); |
| 1e21d011 B |
5487 | if (! SvOK(TARG) && ckWARN(WARN_UNINITIALIZED)) |
| 5488 | report_uninit(TARG); | |
| 5489 | } | |
| 5490 | ||
| a0d0e21e LW |
5491 | up = SvPV_force(TARG, len); |
| 5492 | if (len > 1) { | |
| 7e2040f0 | 5493 | if (DO_UTF8(TARG)) { /* first reverse each character */ |
| dfe13c55 | 5494 | U8* s = (U8*)SvPVX(TARG); |
| 349d4f2f | 5495 | const U8* send = (U8*)(s + len); |
| a0ed51b3 | 5496 | while (s < send) { |
| d742c382 | 5497 | if (UTF8_IS_INVARIANT(*s)) { |
| a0ed51b3 LW |
5498 | s++; |
| 5499 | continue; | |
| 5500 | } | |
| 5501 | else { | |
| 9041c2e3 | 5502 | if (!utf8_to_uvchr(s, 0)) |
| a0dbb045 | 5503 | break; |
| dfe13c55 | 5504 | up = (char*)s; |
| a0ed51b3 | 5505 | s += UTF8SKIP(s); |
| dfe13c55 | 5506 | down = (char*)(s - 1); |
| a0dbb045 | 5507 | /* reverse this character */ |
| a0ed51b3 LW |
5508 | while (down > up) { |
| 5509 | tmp = *up; | |
| 5510 | *up++ = *down; | |
| eb160463 | 5511 | *down-- = (char)tmp; |
| a0ed51b3 LW |
5512 | } |
| 5513 | } | |
| 5514 | } | |
| 5515 | up = SvPVX(TARG); | |
| 5516 | } | |
| a0d0e21e LW |
5517 | down = SvPVX(TARG) + len - 1; |
| 5518 | while (down > up) { | |
| 5519 | tmp = *up; | |
| 5520 | *up++ = *down; | |
| eb160463 | 5521 | *down-- = (char)tmp; |
| a0d0e21e | 5522 | } |
| 3aa33fe5 | 5523 | (void)SvPOK_only_UTF8(TARG); |
| 79072805 | 5524 | } |
| a0d0e21e LW |
5525 | SP = MARK + 1; |
| 5526 | SETTARG; | |
| 79072805 | 5527 | } |
| a0d0e21e | 5528 | RETURN; |
| 79072805 LW |
5529 | } |
| 5530 | ||
| a0d0e21e | 5531 | PP(pp_split) |
| 79072805 | 5532 | { |
| 27da23d5 | 5533 | dVAR; dSP; dTARG; |
| a0d0e21e | 5534 | AV *ary; |
| 467f0320 | 5535 | register IV limit = POPi; /* note, negative is forever */ |
| 1b6737cc | 5536 | SV * const sv = POPs; |
| a0d0e21e | 5537 | STRLEN len; |
| 727b7506 | 5538 | register const char *s = SvPV_const(sv, len); |
| 1b6737cc | 5539 | const bool do_utf8 = DO_UTF8(sv); |
| 727b7506 | 5540 | const char *strend = s + len; |
| 44a8e56a | 5541 | register PMOP *pm; |
| d9f97599 | 5542 | register REGEXP *rx; |
| a0d0e21e | 5543 | register SV *dstr; |
| 727b7506 | 5544 | register const char *m; |
| a0d0e21e | 5545 | I32 iters = 0; |
| bb7a0f54 | 5546 | const STRLEN slen = do_utf8 ? utf8_length((U8*)s, (U8*)strend) : (STRLEN)(strend - s); |
| 792b2c16 | 5547 | I32 maxiters = slen + 10; |
| c1a7495a | 5548 | I32 trailing_empty = 0; |
| 727b7506 | 5549 | const char *orig; |
| 1b6737cc | 5550 | const I32 origlimit = limit; |
| a0d0e21e LW |
5551 | I32 realarray = 0; |
| 5552 | I32 base; | |
| f54cb97a | 5553 | const I32 gimme = GIMME_V; |
| 941446f6 | 5554 | bool gimme_scalar; |
| f54cb97a | 5555 | const I32 oldsave = PL_savestack_ix; |
| 437d3b4e | 5556 | U32 make_mortal = SVs_TEMP; |
| 7fba1cd6 | 5557 | bool multiline = 0; |
| b37c2d43 | 5558 | MAGIC *mg = NULL; |
| 79072805 | 5559 | |
| 44a8e56a | 5560 | #ifdef DEBUGGING |
| 5561 | Copy(&LvTARGOFF(POPs), &pm, 1, PMOP*); | |
| 5562 | #else | |
| 5563 | pm = (PMOP*)POPs; | |
| 5564 | #endif | |
| a0d0e21e | 5565 | if (!pm || !s) |
| 2269b42e | 5566 | DIE(aTHX_ "panic: pp_split"); |
| aaa362c4 | 5567 | rx = PM_GETRE(pm); |
| bbce6d69 | 5568 | |
| a62b1201 | 5569 | TAINT_IF(get_regex_charset(RX_EXTFLAGS(rx)) == REGEX_LOCALE_CHARSET && |
| 07bc277f | 5570 | (RX_EXTFLAGS(rx) & (RXf_WHITE | RXf_SKIPWHITE))); |
| bbce6d69 | 5571 | |
| a30b2f1f | 5572 | RX_MATCH_UTF8_set(rx, do_utf8); |
| d9f424b2 | 5573 | |
| 971a9dd3 | 5574 | #ifdef USE_ITHREADS |
| 20e98b0f | 5575 | if (pm->op_pmreplrootu.op_pmtargetoff) { |
| 159b6efe | 5576 | ary = GvAVn(MUTABLE_GV(PAD_SVl(pm->op_pmreplrootu.op_pmtargetoff))); |
| 20e98b0f | 5577 | } |
| 971a9dd3 | 5578 | #else |
| 20e98b0f NC |
5579 | if (pm->op_pmreplrootu.op_pmtargetgv) { |
| 5580 | ary = GvAVn(pm->op_pmreplrootu.op_pmtargetgv); | |
| 971a9dd3 | 5581 | } |
| 20e98b0f | 5582 | #endif |
| 79072805 | 5583 | else |
| 7d49f689 | 5584 | ary = NULL; |
| a0d0e21e LW |
5585 | if (ary && (gimme != G_ARRAY || (pm->op_pmflags & PMf_ONCE))) { |
| 5586 | realarray = 1; | |
| 8ec5e241 | 5587 | PUTBACK; |
| a0d0e21e LW |
5588 | av_extend(ary,0); |
| 5589 | av_clear(ary); | |
| 8ec5e241 | 5590 | SPAGAIN; |
| ad64d0ec | 5591 | if ((mg = SvTIED_mg((const SV *)ary, PERL_MAGIC_tied))) { |
| 8ec5e241 | 5592 | PUSHMARK(SP); |
| ad64d0ec | 5593 | XPUSHs(SvTIED_obj(MUTABLE_SV(ary), mg)); |
| 8ec5e241 NIS |
5594 | } |
| 5595 | else { | |
| 1c0b011c | 5596 | if (!AvREAL(ary)) { |
| 1b6737cc | 5597 | I32 i; |
| 1c0b011c | 5598 | AvREAL_on(ary); |
| abff13bb | 5599 | AvREIFY_off(ary); |
| 1c0b011c | 5600 | for (i = AvFILLp(ary); i >= 0; i--) |
| 3280af22 | 5601 | AvARRAY(ary)[i] = &PL_sv_undef; /* don't free mere refs */ |
| 1c0b011c NIS |
5602 | } |
| 5603 | /* temporarily switch stacks */ | |
| 8b7059b1 | 5604 | SAVESWITCHSTACK(PL_curstack, ary); |
| 8ec5e241 | 5605 | make_mortal = 0; |
| 1c0b011c | 5606 | } |
| 79072805 | 5607 | } |
| 3280af22 | 5608 | base = SP - PL_stack_base; |
| a0d0e21e | 5609 | orig = s; |
| 07bc277f | 5610 | if (RX_EXTFLAGS(rx) & RXf_SKIPWHITE) { |
| 613f191e TS |
5611 | if (do_utf8) { |
| 5612 | while (*s == ' ' || is_utf8_space((U8*)s)) | |
| 5613 | s += UTF8SKIP(s); | |
| 5614 | } | |
| a62b1201 | 5615 | else if (get_regex_charset(RX_EXTFLAGS(rx)) == REGEX_LOCALE_CHARSET) { |
| bbce6d69 | 5616 | while (isSPACE_LC(*s)) |
| 5617 | s++; | |
| 5618 | } | |
| 5619 | else { | |
| 5620 | while (isSPACE(*s)) | |
| 5621 | s++; | |
| 5622 | } | |
| a0d0e21e | 5623 | } |
| 73134a2e | 5624 | if (RX_EXTFLAGS(rx) & RXf_PMf_MULTILINE) { |
| 7fba1cd6 | 5625 | multiline = 1; |
| c07a80fd | 5626 | } |
| 5627 | ||
| 941446f6 FC |
5628 | gimme_scalar = gimme == G_SCALAR && !ary; |
| 5629 | ||
| a0d0e21e LW |
5630 | if (!limit) |
| 5631 | limit = maxiters + 2; | |
| 07bc277f | 5632 | if (RX_EXTFLAGS(rx) & RXf_WHITE) { |
| a0d0e21e | 5633 | while (--limit) { |
| bbce6d69 | 5634 | m = s; |
| 8727f688 YO |
5635 | /* this one uses 'm' and is a negative test */ |
| 5636 | if (do_utf8) { | |
| 613f191e TS |
5637 | while (m < strend && !( *m == ' ' || is_utf8_space((U8*)m) )) { |
| 5638 | const int t = UTF8SKIP(m); | |
| 5639 | /* is_utf8_space returns FALSE for malform utf8 */ | |
| 5640 | if (strend - m < t) | |
| 5641 | m = strend; | |
| 5642 | else | |
| 5643 | m += t; | |
| 5644 | } | |
| a62b1201 KW |
5645 | } |
| 5646 | else if (get_regex_charset(RX_EXTFLAGS(rx)) == REGEX_LOCALE_CHARSET) { | |
| 8727f688 YO |
5647 | while (m < strend && !isSPACE_LC(*m)) |
| 5648 | ++m; | |
| 5649 | } else { | |
| 5650 | while (m < strend && !isSPACE(*m)) | |
| 5651 | ++m; | |
| 5652 | } | |
| a0d0e21e LW |
5653 | if (m >= strend) |
| 5654 | break; | |
| bbce6d69 | 5655 | |
| c1a7495a BB |
5656 | if (gimme_scalar) { |
| 5657 | iters++; | |
| 5658 | if (m-s == 0) | |
| 5659 | trailing_empty++; | |
| 5660 | else | |
| 5661 | trailing_empty = 0; | |
| 5662 | } else { | |
| 5663 | dstr = newSVpvn_flags(s, m-s, | |
| 5664 | (do_utf8 ? SVf_UTF8 : 0) | make_mortal); | |
| 5665 | XPUSHs(dstr); | |
| 5666 | } | |
| bbce6d69 | 5667 | |
| 613f191e TS |
5668 | /* skip the whitespace found last */ |
| 5669 | if (do_utf8) | |
| 5670 | s = m + UTF8SKIP(m); | |
| 5671 | else | |
| 5672 | s = m + 1; | |
| 5673 | ||
| 8727f688 YO |
5674 | /* this one uses 's' and is a positive test */ |
| 5675 | if (do_utf8) { | |
| 613f191e | 5676 | while (s < strend && ( *s == ' ' || is_utf8_space((U8*)s) )) |
| 8727f688 | 5677 | s += UTF8SKIP(s); |
| a62b1201 KW |
5678 | } |
| 5679 | else if (get_regex_charset(RX_EXTFLAGS(rx)) == REGEX_LOCALE_CHARSET) { | |
| 8727f688 YO |
5680 | while (s < strend && isSPACE_LC(*s)) |
| 5681 | ++s; | |
| 5682 | } else { | |
| 5683 | while (s < strend && isSPACE(*s)) | |
| 5684 | ++s; | |
| 5685 | } | |
| 79072805 LW |
5686 | } |
| 5687 | } | |
| 07bc277f | 5688 | else if (RX_EXTFLAGS(rx) & RXf_START_ONLY) { |
| a0d0e21e | 5689 | while (--limit) { |
| a6e20a40 AL |
5690 | for (m = s; m < strend && *m != '\n'; m++) |
| 5691 | ; | |
| a0d0e21e LW |
5692 | m++; |
| 5693 | if (m >= strend) | |
| 5694 | break; | |
| c1a7495a BB |
5695 | |
| 5696 | if (gimme_scalar) { | |
| 5697 | iters++; | |
| 5698 | if (m-s == 0) | |
| 5699 | trailing_empty++; | |
| 5700 | else | |
| 5701 | trailing_empty = 0; | |
| 5702 | } else { | |
| 5703 | dstr = newSVpvn_flags(s, m-s, | |
| 5704 | (do_utf8 ? SVf_UTF8 : 0) | make_mortal); | |
| 5705 | XPUSHs(dstr); | |
| 5706 | } | |
| a0d0e21e LW |
5707 | s = m; |
| 5708 | } | |
| 5709 | } | |
| 07bc277f | 5710 | else if (RX_EXTFLAGS(rx) & RXf_NULL && !(s >= strend)) { |
| 640f820d AB |
5711 | /* |
| 5712 | Pre-extend the stack, either the number of bytes or | |
| 5713 | characters in the string or a limited amount, triggered by: | |
| 5714 | ||
| 5715 | my ($x, $y) = split //, $str; | |
| 5716 | or | |
| 5717 | split //, $str, $i; | |
| 5718 | */ | |
| c1a7495a BB |
5719 | if (!gimme_scalar) { |
| 5720 | const U32 items = limit - 1; | |
| 5721 | if (items < slen) | |
| 5722 | EXTEND(SP, items); | |
| 5723 | else | |
| 5724 | EXTEND(SP, slen); | |
| 5725 | } | |
| 640f820d | 5726 | |
| e9515b0f AB |
5727 | if (do_utf8) { |
| 5728 | while (--limit) { | |
| 5729 | /* keep track of how many bytes we skip over */ | |
| 5730 | m = s; | |
| 640f820d | 5731 | s += UTF8SKIP(s); |
| c1a7495a BB |
5732 | if (gimme_scalar) { |
| 5733 | iters++; | |
| 5734 | if (s-m == 0) | |
| 5735 | trailing_empty++; | |
| 5736 | else | |
| 5737 | trailing_empty = 0; | |
| 5738 | } else { | |
| 5739 | dstr = newSVpvn_flags(m, s-m, SVf_UTF8 | make_mortal); | |
| 640f820d | 5740 | |
| c1a7495a BB |
5741 | PUSHs(dstr); |
| 5742 | } | |
| 640f820d | 5743 | |
| e9515b0f AB |
5744 | if (s >= strend) |
| 5745 | break; | |
| 5746 | } | |
| 5747 | } else { | |
| 5748 | while (--limit) { | |
| c1a7495a BB |
5749 | if (gimme_scalar) { |
| 5750 | iters++; | |
| 5751 | } else { | |
| 5752 | dstr = newSVpvn(s, 1); | |
| e9515b0f | 5753 | |
| e9515b0f | 5754 | |
| c1a7495a BB |
5755 | if (make_mortal) |
| 5756 | sv_2mortal(dstr); | |
| 640f820d | 5757 | |
| c1a7495a BB |
5758 | PUSHs(dstr); |
| 5759 | } | |
| 5760 | ||
| 5761 | s++; | |
| e9515b0f AB |
5762 | |
| 5763 | if (s >= strend) | |
| 5764 | break; | |
| 5765 | } | |
| 640f820d AB |
5766 | } |
| 5767 | } | |
| 3c8556c3 | 5768 | else if (do_utf8 == (RX_UTF8(rx) != 0) && |
| 07bc277f NC |
5769 | (RX_EXTFLAGS(rx) & RXf_USE_INTUIT) && !RX_NPARENS(rx) |
| 5770 | && (RX_EXTFLAGS(rx) & RXf_CHECK_ALL) | |
| 5771 | && !(RX_EXTFLAGS(rx) & RXf_ANCH)) { | |
| 5772 | const int tail = (RX_EXTFLAGS(rx) & RXf_INTUIT_TAIL); | |
| f9f4320a | 5773 | SV * const csv = CALLREG_INTUIT_STRING(rx); |
| cf93c79d | 5774 | |
| 07bc277f | 5775 | len = RX_MINLENRET(rx); |
| 3c8556c3 | 5776 | if (len == 1 && !RX_UTF8(rx) && !tail) { |
| 1b6737cc | 5777 | const char c = *SvPV_nolen_const(csv); |
| a0d0e21e | 5778 | while (--limit) { |
| a6e20a40 AL |
5779 | for (m = s; m < strend && *m != c; m++) |
| 5780 | ; | |
| a0d0e21e LW |
5781 | if (m >= strend) |
| 5782 | break; | |
| c1a7495a BB |
5783 | if (gimme_scalar) { |
| 5784 | iters++; | |
| 5785 | if (m-s == 0) | |
| 5786 | trailing_empty++; | |
| 5787 | else | |
| 5788 | trailing_empty = 0; | |
| 5789 | } else { | |
| 5790 | dstr = newSVpvn_flags(s, m-s, | |
| 5791 | (do_utf8 ? SVf_UTF8 : 0) | make_mortal); | |
| 5792 | XPUSHs(dstr); | |
| 5793 | } | |
| 93f04dac JH |
5794 | /* The rx->minlen is in characters but we want to step |
| 5795 | * s ahead by bytes. */ | |
| 1aa99e6b IH |
5796 | if (do_utf8) |
| 5797 | s = (char*)utf8_hop((U8*)m, len); | |
| 5798 | else | |
| 5799 | s = m + len; /* Fake \n at the end */ | |
| a0d0e21e LW |
5800 | } |
| 5801 | } | |
| 5802 | else { | |
| a0d0e21e | 5803 | while (s < strend && --limit && |
| f722798b | 5804 | (m = fbm_instr((unsigned char*)s, (unsigned char*)strend, |
| 7fba1cd6 | 5805 | csv, multiline ? FBMrf_MULTILINE : 0)) ) |
| a0d0e21e | 5806 | { |
| c1a7495a BB |
5807 | if (gimme_scalar) { |
| 5808 | iters++; | |
| 5809 | if (m-s == 0) | |
| 5810 | trailing_empty++; | |
| 5811 | else | |
| 5812 | trailing_empty = 0; | |
| 5813 | } else { | |
| 5814 | dstr = newSVpvn_flags(s, m-s, | |
| 5815 | (do_utf8 ? SVf_UTF8 : 0) | make_mortal); | |
| 5816 | XPUSHs(dstr); | |
| 5817 | } | |
| 93f04dac JH |
5818 | /* The rx->minlen is in characters but we want to step |
| 5819 | * s ahead by bytes. */ | |
| 1aa99e6b IH |
5820 | if (do_utf8) |
| 5821 | s = (char*)utf8_hop((U8*)m, len); | |
| 5822 | else | |
| 5823 | s = m + len; /* Fake \n at the end */ | |
| a0d0e21e | 5824 | } |
| 463ee0b2 | 5825 | } |
| 463ee0b2 | 5826 | } |
| a0d0e21e | 5827 | else { |
| 07bc277f | 5828 | maxiters += slen * RX_NPARENS(rx); |
| 080c2dec | 5829 | while (s < strend && --limit) |
| bbce6d69 | 5830 | { |
| 1b6737cc | 5831 | I32 rex_return; |
| 080c2dec | 5832 | PUTBACK; |
| f9f4320a | 5833 | rex_return = CALLREGEXEC(rx, (char*)s, (char*)strend, (char*)orig, 1 , |
| bfafcb9a | 5834 | sv, NULL, SvSCREAM(sv) ? REXEC_SCREAM : 0); |
| 080c2dec | 5835 | SPAGAIN; |
| 1b6737cc | 5836 | if (rex_return == 0) |
| 080c2dec | 5837 | break; |
| d9f97599 | 5838 | TAINT_IF(RX_MATCH_TAINTED(rx)); |
| 07bc277f | 5839 | if (RX_MATCH_COPIED(rx) && RX_SUBBEG(rx) != orig) { |
| a0d0e21e LW |
5840 | m = s; |
| 5841 | s = orig; | |
| 07bc277f | 5842 | orig = RX_SUBBEG(rx); |
| a0d0e21e LW |
5843 | s = orig + (m - s); |
| 5844 | strend = s + (strend - m); | |
| 5845 | } | |
| 07bc277f | 5846 | m = RX_OFFS(rx)[0].start + orig; |
| c1a7495a BB |
5847 | |
| 5848 | if (gimme_scalar) { | |
| 5849 | iters++; | |
| 5850 | if (m-s == 0) | |
| 5851 | trailing_empty++; | |
| 5852 | else | |
| 5853 | trailing_empty = 0; | |
| 5854 | } else { | |
| 5855 | dstr = newSVpvn_flags(s, m-s, | |
| 5856 | (do_utf8 ? SVf_UTF8 : 0) | make_mortal); | |
| 5857 | XPUSHs(dstr); | |
| 5858 | } | |
| 07bc277f | 5859 | if (RX_NPARENS(rx)) { |
| 1b6737cc | 5860 | I32 i; |
| 07bc277f NC |
5861 | for (i = 1; i <= (I32)RX_NPARENS(rx); i++) { |
| 5862 | s = RX_OFFS(rx)[i].start + orig; | |
| 5863 | m = RX_OFFS(rx)[i].end + orig; | |
| 6de67870 JP |
5864 | |
| 5865 | /* japhy (07/27/01) -- the (m && s) test doesn't catch | |
| 5866 | parens that didn't match -- they should be set to | |
| 5867 | undef, not the empty string */ | |
| c1a7495a BB |
5868 | if (gimme_scalar) { |
| 5869 | iters++; | |
| 5870 | if (m-s == 0) | |
| 5871 | trailing_empty++; | |
| 5872 | else | |
| 5873 | trailing_empty = 0; | |
| 5874 | } else { | |
| 5875 | if (m >= orig && s >= orig) { | |
| 5876 | dstr = newSVpvn_flags(s, m-s, | |
| 5877 | (do_utf8 ? SVf_UTF8 : 0) | |
| 5878 | | make_mortal); | |
| 5879 | } | |
| 5880 | else | |
| 5881 | dstr = &PL_sv_undef; /* undef, not "" */ | |
| 5882 | XPUSHs(dstr); | |
| 748a9306 | 5883 | } |
| c1a7495a | 5884 | |
| a0d0e21e LW |
5885 | } |
| 5886 | } | |
| 07bc277f | 5887 | s = RX_OFFS(rx)[0].end + orig; |
| a0d0e21e | 5888 | } |
| 79072805 | 5889 | } |
| 8ec5e241 | 5890 | |
| c1a7495a BB |
5891 | if (!gimme_scalar) { |
| 5892 | iters = (SP - PL_stack_base) - base; | |
| 5893 | } | |
| a0d0e21e | 5894 | if (iters > maxiters) |
| cea2e8a9 | 5895 | DIE(aTHX_ "Split loop"); |
| 8ec5e241 | 5896 | |
| a0d0e21e LW |
5897 | /* keep field after final delim? */ |
| 5898 | if (s < strend || (iters && origlimit)) { | |
| c1a7495a BB |
5899 | if (!gimme_scalar) { |
| 5900 | const STRLEN l = strend - s; | |
| 5901 | dstr = newSVpvn_flags(s, l, (do_utf8 ? SVf_UTF8 : 0) | make_mortal); | |
| 5902 | XPUSHs(dstr); | |
| 5903 | } | |
| a0d0e21e | 5904 | iters++; |
| 79072805 | 5905 | } |
| a0d0e21e | 5906 | else if (!origlimit) { |
| c1a7495a BB |
5907 | if (gimme_scalar) { |
| 5908 | iters -= trailing_empty; | |
| 5909 | } else { | |
| 5910 | while (iters > 0 && (!TOPs || !SvANY(TOPs) || SvCUR(TOPs) == 0)) { | |
| 5911 | if (TOPs && !make_mortal) | |
| 5912 | sv_2mortal(TOPs); | |
| 5913 | *SP-- = &PL_sv_undef; | |
| 5914 | iters--; | |
| 5915 | } | |
| 89900bd3 | 5916 | } |
| a0d0e21e | 5917 | } |
| 8ec5e241 | 5918 | |
| 8b7059b1 DM |
5919 | PUTBACK; |
| 5920 | LEAVE_SCOPE(oldsave); /* may undo an earlier SWITCHSTACK */ | |
| 5921 | SPAGAIN; | |
| a0d0e21e | 5922 | if (realarray) { |
| 8ec5e241 | 5923 | if (!mg) { |
| 1c0b011c NIS |
5924 | if (SvSMAGICAL(ary)) { |
| 5925 | PUTBACK; | |
| ad64d0ec | 5926 | mg_set(MUTABLE_SV(ary)); |
| 1c0b011c NIS |
5927 | SPAGAIN; |
| 5928 | } | |
| 5929 | if (gimme == G_ARRAY) { | |
| 5930 | EXTEND(SP, iters); | |
| 5931 | Copy(AvARRAY(ary), SP + 1, iters, SV*); | |
| 5932 | SP += iters; | |
| 5933 | RETURN; | |
| 5934 | } | |
| 8ec5e241 | 5935 | } |
| 1c0b011c | 5936 | else { |
| fb73857a | 5937 | PUTBACK; |
| d343c3ef | 5938 | ENTER_with_name("call_PUSH"); |
| 864dbfa3 | 5939 | call_method("PUSH",G_SCALAR|G_DISCARD); |
| d343c3ef | 5940 | LEAVE_with_name("call_PUSH"); |
| fb73857a | 5941 | SPAGAIN; |
| 8ec5e241 | 5942 | if (gimme == G_ARRAY) { |
| 1b6737cc | 5943 | I32 i; |
| 8ec5e241 NIS |
5944 | /* EXTEND should not be needed - we just popped them */ |
| 5945 | EXTEND(SP, iters); | |
| 5946 | for (i=0; i < iters; i++) { | |
| 5947 | SV **svp = av_fetch(ary, i, FALSE); | |
| 3280af22 | 5948 | PUSHs((svp) ? *svp : &PL_sv_undef); |
| 8ec5e241 | 5949 | } |
| 1c0b011c NIS |
5950 | RETURN; |
| 5951 | } | |
| a0d0e21e LW |
5952 | } |
| 5953 | } | |
| 5954 | else { | |
| 5955 | if (gimme == G_ARRAY) | |
| 5956 | RETURN; | |
| 5957 | } | |
| 7f18b612 YST |
5958 | |
| 5959 | GETTARGET; | |
| 5960 | PUSHi(iters); | |
| 5961 | RETURN; | |
| 79072805 | 5962 | } |
| 85e6fe83 | 5963 | |
| c5917253 NC |
5964 | PP(pp_once) |
| 5965 | { | |
| 5966 | dSP; | |
| 5967 | SV *const sv = PAD_SVl(PL_op->op_targ); | |
| 5968 | ||
| 5969 | if (SvPADSTALE(sv)) { | |
| 5970 | /* First time. */ | |
| 5971 | SvPADSTALE_off(sv); | |
| 5972 | RETURNOP(cLOGOP->op_other); | |
| 5973 | } | |
| 5974 | RETURNOP(cLOGOP->op_next); | |
| 5975 | } | |
| 5976 | ||
| c0329465 MB |
5977 | PP(pp_lock) |
| 5978 | { | |
| 97aff369 | 5979 | dVAR; |
| 39644a26 | 5980 | dSP; |
| c0329465 | 5981 | dTOPss; |
| e55aaa0e | 5982 | SV *retsv = sv; |
| 076a2a80 | 5983 | assert(SvTYPE(retsv) != SVt_PVCV); |
| 68795e93 | 5984 | SvLOCK(sv); |
| 076a2a80 | 5985 | if (SvTYPE(retsv) == SVt_PVAV || SvTYPE(retsv) == SVt_PVHV) { |
| e55aaa0e MB |
5986 | retsv = refto(retsv); |
| 5987 | } | |
| 5988 | SETs(retsv); | |
| c0329465 MB |
5989 | RETURN; |
| 5990 | } | |
| a863c7d1 | 5991 | |
| 65bca31a NC |
5992 | |
| 5993 | PP(unimplemented_op) | |
| 5994 | { | |
| 97aff369 | 5995 | dVAR; |
| 361ed549 NC |
5996 | const Optype op_type = PL_op->op_type; |
| 5997 | /* Using OP_NAME() isn't going to be helpful here. Firstly, it doesn't cope | |
| 5998 | with out of range op numbers - it only "special" cases op_custom. | |
| 5999 | Secondly, as the three ops we "panic" on are padmy, mapstart and custom, | |
| 6000 | if we get here for a custom op then that means that the custom op didn't | |
| 6001 | have an implementation. Given that OP_NAME() looks up the custom op | |
| 6002 | by its pp_addr, likely it will return NULL, unless someone (unhelpfully) | |
| 6003 | registers &PL_unimplemented_op as the address of their custom op. | |
| 6004 | NULL doesn't generate a useful error message. "custom" does. */ | |
| 6005 | const char *const name = op_type >= OP_max | |
| 6006 | ? "[out of range]" : PL_op_name[PL_op->op_type]; | |
| 7627e6d0 NC |
6007 | if(OP_IS_SOCKET(op_type)) |
| 6008 | DIE(aTHX_ PL_no_sock_func, name); | |
| 361ed549 | 6009 | DIE(aTHX_ "panic: unimplemented op %s (#%d) called", name, op_type); |
| 65bca31a NC |
6010 | } |
| 6011 | ||
| 867fa1e2 YO |
6012 | PP(pp_boolkeys) |
| 6013 | { | |
| 6014 | dVAR; | |
| 6015 | dSP; | |
| 6016 | HV * const hv = (HV*)POPs; | |
| 6017 | ||
| fd1d9b5c FC |
6018 | if (SvTYPE(hv) != SVt_PVHV) { XPUSHs(&PL_sv_no); RETURN; } |
| 6019 | ||
| 867fa1e2 YO |
6020 | if (SvRMAGICAL(hv)) { |
| 6021 | MAGIC * const mg = mg_find((SV*)hv, PERL_MAGIC_tied); | |
| 6022 | if (mg) { | |
| 6023 | XPUSHs(magic_scalarpack(hv, mg)); | |
| 6024 | RETURN; | |
| 6025 | } | |
| 6026 | } | |
| 6027 | ||
| 1b95d04f | 6028 | XPUSHs(boolSV(HvUSEDKEYS(hv) != 0)); |
| 867fa1e2 YO |
6029 | RETURN; |
| 6030 | } | |
| 6031 | ||
| e609e586 NC |
6032 | /* |
| 6033 | * Local variables: | |
| 6034 | * c-indentation-style: bsd | |
| 6035 | * c-basic-offset: 4 | |
| 6036 | * indent-tabs-mode: t | |
| 6037 | * End: | |
| 6038 | * | |
| 37442d52 RGS |
6039 | * ex: set ts=8 sts=4 sw=4 noet: |
| 6040 | */ |