| 1 | /* pp_ctl.c |
| 2 | * |
| 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
| 4 | * 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 by Larry Wall and others |
| 5 | * |
| 6 | * You may distribute under the terms of either the GNU General Public |
| 7 | * License or the Artistic License, as specified in the README file. |
| 8 | * |
| 9 | */ |
| 10 | |
| 11 | /* |
| 12 | * Now far ahead the Road has gone, |
| 13 | * And I must follow, if I can, |
| 14 | * Pursuing it with eager feet, |
| 15 | * Until it joins some larger way |
| 16 | * Where many paths and errands meet. |
| 17 | * And whither then? I cannot say. |
| 18 | */ |
| 19 | |
| 20 | /* This file contains control-oriented pp ("push/pop") functions that |
| 21 | * execute the opcodes that make up a perl program. A typical pp function |
| 22 | * expects to find its arguments on the stack, and usually pushes its |
| 23 | * results onto the stack, hence the 'pp' terminology. Each OP structure |
| 24 | * contains a pointer to the relevant pp_foo() function. |
| 25 | * |
| 26 | * Control-oriented means things like pp_enteriter() and pp_next(), which |
| 27 | * alter the flow of control of the program. |
| 28 | */ |
| 29 | |
| 30 | |
| 31 | #include "EXTERN.h" |
| 32 | #define PERL_IN_PP_CTL_C |
| 33 | #include "perl.h" |
| 34 | |
| 35 | #ifndef WORD_ALIGN |
| 36 | #define WORD_ALIGN sizeof(U32) |
| 37 | #endif |
| 38 | |
| 39 | #define DOCATCH(o) ((CATCH_GET == TRUE) ? docatch(o) : (o)) |
| 40 | |
| 41 | #define dopoptosub(plop) dopoptosub_at(cxstack, (plop)) |
| 42 | |
| 43 | PP(pp_wantarray) |
| 44 | { |
| 45 | dVAR; |
| 46 | dSP; |
| 47 | I32 cxix; |
| 48 | EXTEND(SP, 1); |
| 49 | |
| 50 | cxix = dopoptosub(cxstack_ix); |
| 51 | if (cxix < 0) |
| 52 | RETPUSHUNDEF; |
| 53 | |
| 54 | switch (cxstack[cxix].blk_gimme) { |
| 55 | case G_ARRAY: |
| 56 | RETPUSHYES; |
| 57 | case G_SCALAR: |
| 58 | RETPUSHNO; |
| 59 | default: |
| 60 | RETPUSHUNDEF; |
| 61 | } |
| 62 | } |
| 63 | |
| 64 | PP(pp_regcreset) |
| 65 | { |
| 66 | dVAR; |
| 67 | /* XXXX Should store the old value to allow for tie/overload - and |
| 68 | restore in regcomp, where marked with XXXX. */ |
| 69 | PL_reginterp_cnt = 0; |
| 70 | TAINT_NOT; |
| 71 | return NORMAL; |
| 72 | } |
| 73 | |
| 74 | PP(pp_regcomp) |
| 75 | { |
| 76 | dVAR; |
| 77 | dSP; |
| 78 | register PMOP *pm = (PMOP*)cLOGOP->op_other; |
| 79 | SV *tmpstr; |
| 80 | REGEXP *re = NULL; |
| 81 | |
| 82 | /* prevent recompiling under /o and ithreads. */ |
| 83 | #if defined(USE_ITHREADS) |
| 84 | if (pm->op_pmflags & PMf_KEEP && PM_GETRE(pm)) { |
| 85 | if (PL_op->op_flags & OPf_STACKED) { |
| 86 | dMARK; |
| 87 | SP = MARK; |
| 88 | } |
| 89 | else |
| 90 | (void)POPs; |
| 91 | RETURN; |
| 92 | } |
| 93 | #endif |
| 94 | if (PL_op->op_flags & OPf_STACKED) { |
| 95 | /* multiple args; concatentate them */ |
| 96 | dMARK; dORIGMARK; |
| 97 | tmpstr = PAD_SV(ARGTARG); |
| 98 | sv_setpvn(tmpstr, "", 0); |
| 99 | while (++MARK <= SP) { |
| 100 | if (PL_amagic_generation) { |
| 101 | SV *sv; |
| 102 | if ((SvAMAGIC(tmpstr) || SvAMAGIC(*MARK)) && |
| 103 | (sv = amagic_call(tmpstr, *MARK, concat_amg, AMGf_assign))) |
| 104 | { |
| 105 | sv_setsv(tmpstr, sv); |
| 106 | continue; |
| 107 | } |
| 108 | } |
| 109 | sv_catsv(tmpstr, *MARK); |
| 110 | } |
| 111 | SvSETMAGIC(tmpstr); |
| 112 | SP = ORIGMARK; |
| 113 | } |
| 114 | else |
| 115 | tmpstr = POPs; |
| 116 | |
| 117 | if (SvROK(tmpstr)) { |
| 118 | SV * const sv = SvRV(tmpstr); |
| 119 | if (SvTYPE(sv) == SVt_REGEXP) |
| 120 | re = (REGEXP*) sv; |
| 121 | } |
| 122 | if (re) { |
| 123 | re = reg_temp_copy(re); |
| 124 | ReREFCNT_dec(PM_GETRE(pm)); |
| 125 | PM_SETRE(pm, re); |
| 126 | } |
| 127 | else { |
| 128 | STRLEN len; |
| 129 | const char *t = SvOK(tmpstr) ? SvPV_const(tmpstr, len) : ""; |
| 130 | re = PM_GETRE(pm); |
| 131 | assert (re != (REGEXP*) &PL_sv_undef); |
| 132 | |
| 133 | /* Check against the last compiled regexp. */ |
| 134 | if (!re || !RX_PRECOMP(re) || RX_PRELEN(re) != len || |
| 135 | memNE(RX_PRECOMP(re), t, len)) |
| 136 | { |
| 137 | const regexp_engine *eng = re ? RX_ENGINE(re) : NULL; |
| 138 | U32 pm_flags = pm->op_pmflags & PMf_COMPILETIME; |
| 139 | if (re) { |
| 140 | ReREFCNT_dec(re); |
| 141 | #ifdef USE_ITHREADS |
| 142 | PM_SETRE(pm, (REGEXP*) &PL_sv_undef); |
| 143 | #else |
| 144 | PM_SETRE(pm, NULL); /* crucial if regcomp aborts */ |
| 145 | #endif |
| 146 | } else if (PL_curcop->cop_hints_hash) { |
| 147 | SV *ptr = Perl_refcounted_he_fetch(aTHX_ PL_curcop->cop_hints_hash, 0, |
| 148 | "regcomp", 7, 0, 0); |
| 149 | if (ptr && SvIOK(ptr) && SvIV(ptr)) |
| 150 | eng = INT2PTR(regexp_engine*,SvIV(ptr)); |
| 151 | } |
| 152 | |
| 153 | if (PL_op->op_flags & OPf_SPECIAL) |
| 154 | PL_reginterp_cnt = I32_MAX; /* Mark as safe. */ |
| 155 | |
| 156 | if (DO_UTF8(tmpstr)) { |
| 157 | assert (SvUTF8(tmpstr)); |
| 158 | } else if (SvUTF8(tmpstr)) { |
| 159 | /* Not doing UTF-8, despite what the SV says. Is this only if |
| 160 | we're trapped in use 'bytes'? */ |
| 161 | /* Make a copy of the octet sequence, but without the flag on, |
| 162 | as the compiler now honours the SvUTF8 flag on tmpstr. */ |
| 163 | STRLEN len; |
| 164 | const char *const p = SvPV(tmpstr, len); |
| 165 | tmpstr = newSVpvn_flags(p, len, SVs_TEMP); |
| 166 | } |
| 167 | |
| 168 | if (eng) |
| 169 | PM_SETRE(pm, CALLREGCOMP_ENG(eng, tmpstr, pm_flags)); |
| 170 | else |
| 171 | PM_SETRE(pm, CALLREGCOMP(tmpstr, pm_flags)); |
| 172 | |
| 173 | PL_reginterp_cnt = 0; /* XXXX Be extra paranoid - needed |
| 174 | inside tie/overload accessors. */ |
| 175 | } |
| 176 | } |
| 177 | |
| 178 | re = PM_GETRE(pm); |
| 179 | |
| 180 | #ifndef INCOMPLETE_TAINTS |
| 181 | if (PL_tainting) { |
| 182 | if (PL_tainted) |
| 183 | RX_EXTFLAGS(re) |= RXf_TAINTED; |
| 184 | else |
| 185 | RX_EXTFLAGS(re) &= ~RXf_TAINTED; |
| 186 | } |
| 187 | #endif |
| 188 | |
| 189 | if (!RX_PRELEN(PM_GETRE(pm)) && PL_curpm) |
| 190 | pm = PL_curpm; |
| 191 | |
| 192 | |
| 193 | #if !defined(USE_ITHREADS) |
| 194 | /* can't change the optree at runtime either */ |
| 195 | /* PMf_KEEP is handled differently under threads to avoid these problems */ |
| 196 | if (pm->op_pmflags & PMf_KEEP) { |
| 197 | pm->op_private &= ~OPpRUNTIME; /* no point compiling again */ |
| 198 | cLOGOP->op_first->op_next = PL_op->op_next; |
| 199 | } |
| 200 | #endif |
| 201 | RETURN; |
| 202 | } |
| 203 | |
| 204 | PP(pp_substcont) |
| 205 | { |
| 206 | dVAR; |
| 207 | dSP; |
| 208 | register PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
| 209 | register PMOP * const pm = (PMOP*) cLOGOP->op_other; |
| 210 | register SV * const dstr = cx->sb_dstr; |
| 211 | register char *s = cx->sb_s; |
| 212 | register char *m = cx->sb_m; |
| 213 | char *orig = cx->sb_orig; |
| 214 | register REGEXP * const rx = cx->sb_rx; |
| 215 | SV *nsv = NULL; |
| 216 | REGEXP *old = PM_GETRE(pm); |
| 217 | if(old != rx) { |
| 218 | if(old) |
| 219 | ReREFCNT_dec(old); |
| 220 | PM_SETRE(pm,ReREFCNT_inc(rx)); |
| 221 | } |
| 222 | |
| 223 | rxres_restore(&cx->sb_rxres, rx); |
| 224 | RX_MATCH_UTF8_set(rx, DO_UTF8(cx->sb_targ)); |
| 225 | |
| 226 | if (cx->sb_iters++) { |
| 227 | const I32 saviters = cx->sb_iters; |
| 228 | if (cx->sb_iters > cx->sb_maxiters) |
| 229 | DIE(aTHX_ "Substitution loop"); |
| 230 | |
| 231 | if (!(cx->sb_rxtainted & 2) && SvTAINTED(TOPs)) |
| 232 | cx->sb_rxtainted |= 2; |
| 233 | sv_catsv(dstr, POPs); |
| 234 | FREETMPS; /* Prevent excess tmp stack */ |
| 235 | |
| 236 | /* Are we done */ |
| 237 | if (cx->sb_once || !CALLREGEXEC(rx, s, cx->sb_strend, orig, |
| 238 | s == m, cx->sb_targ, NULL, |
| 239 | ((cx->sb_rflags & REXEC_COPY_STR) |
| 240 | ? (REXEC_IGNOREPOS|REXEC_NOT_FIRST) |
| 241 | : (REXEC_COPY_STR|REXEC_IGNOREPOS|REXEC_NOT_FIRST)))) |
| 242 | { |
| 243 | SV * const targ = cx->sb_targ; |
| 244 | |
| 245 | assert(cx->sb_strend >= s); |
| 246 | if(cx->sb_strend > s) { |
| 247 | if (DO_UTF8(dstr) && !SvUTF8(targ)) |
| 248 | sv_catpvn_utf8_upgrade(dstr, s, cx->sb_strend - s, nsv); |
| 249 | else |
| 250 | sv_catpvn(dstr, s, cx->sb_strend - s); |
| 251 | } |
| 252 | cx->sb_rxtainted |= RX_MATCH_TAINTED(rx); |
| 253 | |
| 254 | #ifdef PERL_OLD_COPY_ON_WRITE |
| 255 | if (SvIsCOW(targ)) { |
| 256 | sv_force_normal_flags(targ, SV_COW_DROP_PV); |
| 257 | } else |
| 258 | #endif |
| 259 | { |
| 260 | SvPV_free(targ); |
| 261 | } |
| 262 | SvPV_set(targ, SvPVX(dstr)); |
| 263 | SvCUR_set(targ, SvCUR(dstr)); |
| 264 | SvLEN_set(targ, SvLEN(dstr)); |
| 265 | if (DO_UTF8(dstr)) |
| 266 | SvUTF8_on(targ); |
| 267 | SvPV_set(dstr, NULL); |
| 268 | |
| 269 | TAINT_IF(cx->sb_rxtainted & 1); |
| 270 | mPUSHi(saviters - 1); |
| 271 | |
| 272 | (void)SvPOK_only_UTF8(targ); |
| 273 | TAINT_IF(cx->sb_rxtainted); |
| 274 | SvSETMAGIC(targ); |
| 275 | SvTAINT(targ); |
| 276 | |
| 277 | LEAVE_SCOPE(cx->sb_oldsave); |
| 278 | POPSUBST(cx); |
| 279 | RETURNOP(pm->op_next); |
| 280 | } |
| 281 | cx->sb_iters = saviters; |
| 282 | } |
| 283 | if (RX_MATCH_COPIED(rx) && RX_SUBBEG(rx) != orig) { |
| 284 | m = s; |
| 285 | s = orig; |
| 286 | cx->sb_orig = orig = RX_SUBBEG(rx); |
| 287 | s = orig + (m - s); |
| 288 | cx->sb_strend = s + (cx->sb_strend - m); |
| 289 | } |
| 290 | cx->sb_m = m = RX_OFFS(rx)[0].start + orig; |
| 291 | if (m > s) { |
| 292 | if (DO_UTF8(dstr) && !SvUTF8(cx->sb_targ)) |
| 293 | sv_catpvn_utf8_upgrade(dstr, s, m - s, nsv); |
| 294 | else |
| 295 | sv_catpvn(dstr, s, m-s); |
| 296 | } |
| 297 | cx->sb_s = RX_OFFS(rx)[0].end + orig; |
| 298 | { /* Update the pos() information. */ |
| 299 | SV * const sv = cx->sb_targ; |
| 300 | MAGIC *mg; |
| 301 | I32 i; |
| 302 | SvUPGRADE(sv, SVt_PVMG); |
| 303 | if (!(mg = mg_find(sv, PERL_MAGIC_regex_global))) { |
| 304 | #ifdef PERL_OLD_COPY_ON_WRITE |
| 305 | if (SvIsCOW(sv)) |
| 306 | sv_force_normal_flags(sv, 0); |
| 307 | #endif |
| 308 | mg = sv_magicext(sv, NULL, PERL_MAGIC_regex_global, &PL_vtbl_mglob, |
| 309 | NULL, 0); |
| 310 | } |
| 311 | i = m - orig; |
| 312 | if (DO_UTF8(sv)) |
| 313 | sv_pos_b2u(sv, &i); |
| 314 | mg->mg_len = i; |
| 315 | } |
| 316 | if (old != rx) |
| 317 | (void)ReREFCNT_inc(rx); |
| 318 | cx->sb_rxtainted |= RX_MATCH_TAINTED(rx); |
| 319 | rxres_save(&cx->sb_rxres, rx); |
| 320 | RETURNOP(pm->op_pmstashstartu.op_pmreplstart); |
| 321 | } |
| 322 | |
| 323 | void |
| 324 | Perl_rxres_save(pTHX_ void **rsp, REGEXP *rx) |
| 325 | { |
| 326 | UV *p = (UV*)*rsp; |
| 327 | U32 i; |
| 328 | PERL_UNUSED_CONTEXT; |
| 329 | |
| 330 | if (!p || p[1] < RX_NPARENS(rx)) { |
| 331 | #ifdef PERL_OLD_COPY_ON_WRITE |
| 332 | i = 7 + RX_NPARENS(rx) * 2; |
| 333 | #else |
| 334 | i = 6 + RX_NPARENS(rx) * 2; |
| 335 | #endif |
| 336 | if (!p) |
| 337 | Newx(p, i, UV); |
| 338 | else |
| 339 | Renew(p, i, UV); |
| 340 | *rsp = (void*)p; |
| 341 | } |
| 342 | |
| 343 | *p++ = PTR2UV(RX_MATCH_COPIED(rx) ? RX_SUBBEG(rx) : NULL); |
| 344 | RX_MATCH_COPIED_off(rx); |
| 345 | |
| 346 | #ifdef PERL_OLD_COPY_ON_WRITE |
| 347 | *p++ = PTR2UV(RX_SAVED_COPY(rx)); |
| 348 | RX_SAVED_COPY(rx) = NULL; |
| 349 | #endif |
| 350 | |
| 351 | *p++ = RX_NPARENS(rx); |
| 352 | |
| 353 | *p++ = PTR2UV(RX_SUBBEG(rx)); |
| 354 | *p++ = (UV)RX_SUBLEN(rx); |
| 355 | for (i = 0; i <= RX_NPARENS(rx); ++i) { |
| 356 | *p++ = (UV)RX_OFFS(rx)[i].start; |
| 357 | *p++ = (UV)RX_OFFS(rx)[i].end; |
| 358 | } |
| 359 | } |
| 360 | |
| 361 | void |
| 362 | Perl_rxres_restore(pTHX_ void **rsp, REGEXP *rx) |
| 363 | { |
| 364 | UV *p = (UV*)*rsp; |
| 365 | U32 i; |
| 366 | PERL_UNUSED_CONTEXT; |
| 367 | |
| 368 | RX_MATCH_COPY_FREE(rx); |
| 369 | RX_MATCH_COPIED_set(rx, *p); |
| 370 | *p++ = 0; |
| 371 | |
| 372 | #ifdef PERL_OLD_COPY_ON_WRITE |
| 373 | if (RX_SAVED_COPY(rx)) |
| 374 | SvREFCNT_dec (RX_SAVED_COPY(rx)); |
| 375 | RX_SAVED_COPY(rx) = INT2PTR(SV*,*p); |
| 376 | *p++ = 0; |
| 377 | #endif |
| 378 | |
| 379 | RX_NPARENS(rx) = *p++; |
| 380 | |
| 381 | RX_SUBBEG(rx) = INT2PTR(char*,*p++); |
| 382 | RX_SUBLEN(rx) = (I32)(*p++); |
| 383 | for (i = 0; i <= RX_NPARENS(rx); ++i) { |
| 384 | RX_OFFS(rx)[i].start = (I32)(*p++); |
| 385 | RX_OFFS(rx)[i].end = (I32)(*p++); |
| 386 | } |
| 387 | } |
| 388 | |
| 389 | void |
| 390 | Perl_rxres_free(pTHX_ void **rsp) |
| 391 | { |
| 392 | UV * const p = (UV*)*rsp; |
| 393 | PERL_UNUSED_CONTEXT; |
| 394 | |
| 395 | if (p) { |
| 396 | #ifdef PERL_POISON |
| 397 | void *tmp = INT2PTR(char*,*p); |
| 398 | Safefree(tmp); |
| 399 | if (*p) |
| 400 | PoisonFree(*p, 1, sizeof(*p)); |
| 401 | #else |
| 402 | Safefree(INT2PTR(char*,*p)); |
| 403 | #endif |
| 404 | #ifdef PERL_OLD_COPY_ON_WRITE |
| 405 | if (p[1]) { |
| 406 | SvREFCNT_dec (INT2PTR(SV*,p[1])); |
| 407 | } |
| 408 | #endif |
| 409 | Safefree(p); |
| 410 | *rsp = NULL; |
| 411 | } |
| 412 | } |
| 413 | |
| 414 | PP(pp_formline) |
| 415 | { |
| 416 | dVAR; dSP; dMARK; dORIGMARK; |
| 417 | register SV * const tmpForm = *++MARK; |
| 418 | register U32 *fpc; |
| 419 | register char *t; |
| 420 | const char *f; |
| 421 | register I32 arg; |
| 422 | register SV *sv = NULL; |
| 423 | const char *item = NULL; |
| 424 | I32 itemsize = 0; |
| 425 | I32 fieldsize = 0; |
| 426 | I32 lines = 0; |
| 427 | bool chopspace = (strchr(PL_chopset, ' ') != NULL); |
| 428 | const char *chophere = NULL; |
| 429 | char *linemark = NULL; |
| 430 | NV value; |
| 431 | bool gotsome = FALSE; |
| 432 | STRLEN len; |
| 433 | const STRLEN fudge = SvPOK(tmpForm) |
| 434 | ? (SvCUR(tmpForm) * (IN_BYTES ? 1 : 3) + 1) : 0; |
| 435 | bool item_is_utf8 = FALSE; |
| 436 | bool targ_is_utf8 = FALSE; |
| 437 | SV * nsv = NULL; |
| 438 | OP * parseres = NULL; |
| 439 | const char *fmt; |
| 440 | bool oneline; |
| 441 | |
| 442 | if (!SvMAGICAL(tmpForm) || !SvCOMPILED(tmpForm)) { |
| 443 | if (SvREADONLY(tmpForm)) { |
| 444 | SvREADONLY_off(tmpForm); |
| 445 | parseres = doparseform(tmpForm); |
| 446 | SvREADONLY_on(tmpForm); |
| 447 | } |
| 448 | else |
| 449 | parseres = doparseform(tmpForm); |
| 450 | if (parseres) |
| 451 | return parseres; |
| 452 | } |
| 453 | SvPV_force(PL_formtarget, len); |
| 454 | if (DO_UTF8(PL_formtarget)) |
| 455 | targ_is_utf8 = TRUE; |
| 456 | t = SvGROW(PL_formtarget, len + fudge + 1); /* XXX SvCUR bad */ |
| 457 | t += len; |
| 458 | f = SvPV_const(tmpForm, len); |
| 459 | /* need to jump to the next word */ |
| 460 | fpc = (U32*)(f + len + WORD_ALIGN - SvCUR(tmpForm) % WORD_ALIGN); |
| 461 | |
| 462 | for (;;) { |
| 463 | DEBUG_f( { |
| 464 | const char *name = "???"; |
| 465 | arg = -1; |
| 466 | switch (*fpc) { |
| 467 | case FF_LITERAL: arg = fpc[1]; name = "LITERAL"; break; |
| 468 | case FF_BLANK: arg = fpc[1]; name = "BLANK"; break; |
| 469 | case FF_SKIP: arg = fpc[1]; name = "SKIP"; break; |
| 470 | case FF_FETCH: arg = fpc[1]; name = "FETCH"; break; |
| 471 | case FF_DECIMAL: arg = fpc[1]; name = "DECIMAL"; break; |
| 472 | |
| 473 | case FF_CHECKNL: name = "CHECKNL"; break; |
| 474 | case FF_CHECKCHOP: name = "CHECKCHOP"; break; |
| 475 | case FF_SPACE: name = "SPACE"; break; |
| 476 | case FF_HALFSPACE: name = "HALFSPACE"; break; |
| 477 | case FF_ITEM: name = "ITEM"; break; |
| 478 | case FF_CHOP: name = "CHOP"; break; |
| 479 | case FF_LINEGLOB: name = "LINEGLOB"; break; |
| 480 | case FF_NEWLINE: name = "NEWLINE"; break; |
| 481 | case FF_MORE: name = "MORE"; break; |
| 482 | case FF_LINEMARK: name = "LINEMARK"; break; |
| 483 | case FF_END: name = "END"; break; |
| 484 | case FF_0DECIMAL: name = "0DECIMAL"; break; |
| 485 | case FF_LINESNGL: name = "LINESNGL"; break; |
| 486 | } |
| 487 | if (arg >= 0) |
| 488 | PerlIO_printf(Perl_debug_log, "%-16s%ld\n", name, (long) arg); |
| 489 | else |
| 490 | PerlIO_printf(Perl_debug_log, "%-16s\n", name); |
| 491 | } ); |
| 492 | switch (*fpc++) { |
| 493 | case FF_LINEMARK: |
| 494 | linemark = t; |
| 495 | lines++; |
| 496 | gotsome = FALSE; |
| 497 | break; |
| 498 | |
| 499 | case FF_LITERAL: |
| 500 | arg = *fpc++; |
| 501 | if (targ_is_utf8 && !SvUTF8(tmpForm)) { |
| 502 | SvCUR_set(PL_formtarget, t - SvPVX_const(PL_formtarget)); |
| 503 | *t = '\0'; |
| 504 | sv_catpvn_utf8_upgrade(PL_formtarget, f, arg, nsv); |
| 505 | t = SvEND(PL_formtarget); |
| 506 | break; |
| 507 | } |
| 508 | if (!targ_is_utf8 && DO_UTF8(tmpForm)) { |
| 509 | SvCUR_set(PL_formtarget, t - SvPVX_const(PL_formtarget)); |
| 510 | *t = '\0'; |
| 511 | sv_utf8_upgrade(PL_formtarget); |
| 512 | SvGROW(PL_formtarget, SvCUR(PL_formtarget) + fudge + 1); |
| 513 | t = SvEND(PL_formtarget); |
| 514 | targ_is_utf8 = TRUE; |
| 515 | } |
| 516 | while (arg--) |
| 517 | *t++ = *f++; |
| 518 | break; |
| 519 | |
| 520 | case FF_SKIP: |
| 521 | f += *fpc++; |
| 522 | break; |
| 523 | |
| 524 | case FF_FETCH: |
| 525 | arg = *fpc++; |
| 526 | f += arg; |
| 527 | fieldsize = arg; |
| 528 | |
| 529 | if (MARK < SP) |
| 530 | sv = *++MARK; |
| 531 | else { |
| 532 | sv = &PL_sv_no; |
| 533 | if (ckWARN(WARN_SYNTAX)) |
| 534 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Not enough format arguments"); |
| 535 | } |
| 536 | break; |
| 537 | |
| 538 | case FF_CHECKNL: |
| 539 | { |
| 540 | const char *send; |
| 541 | const char *s = item = SvPV_const(sv, len); |
| 542 | itemsize = len; |
| 543 | if (DO_UTF8(sv)) { |
| 544 | itemsize = sv_len_utf8(sv); |
| 545 | if (itemsize != (I32)len) { |
| 546 | I32 itembytes; |
| 547 | if (itemsize > fieldsize) { |
| 548 | itemsize = fieldsize; |
| 549 | itembytes = itemsize; |
| 550 | sv_pos_u2b(sv, &itembytes, 0); |
| 551 | } |
| 552 | else |
| 553 | itembytes = len; |
| 554 | send = chophere = s + itembytes; |
| 555 | while (s < send) { |
| 556 | if (*s & ~31) |
| 557 | gotsome = TRUE; |
| 558 | else if (*s == '\n') |
| 559 | break; |
| 560 | s++; |
| 561 | } |
| 562 | item_is_utf8 = TRUE; |
| 563 | itemsize = s - item; |
| 564 | sv_pos_b2u(sv, &itemsize); |
| 565 | break; |
| 566 | } |
| 567 | } |
| 568 | item_is_utf8 = FALSE; |
| 569 | if (itemsize > fieldsize) |
| 570 | itemsize = fieldsize; |
| 571 | send = chophere = s + itemsize; |
| 572 | while (s < send) { |
| 573 | if (*s & ~31) |
| 574 | gotsome = TRUE; |
| 575 | else if (*s == '\n') |
| 576 | break; |
| 577 | s++; |
| 578 | } |
| 579 | itemsize = s - item; |
| 580 | break; |
| 581 | } |
| 582 | |
| 583 | case FF_CHECKCHOP: |
| 584 | { |
| 585 | const char *s = item = SvPV_const(sv, len); |
| 586 | itemsize = len; |
| 587 | if (DO_UTF8(sv)) { |
| 588 | itemsize = sv_len_utf8(sv); |
| 589 | if (itemsize != (I32)len) { |
| 590 | I32 itembytes; |
| 591 | if (itemsize <= fieldsize) { |
| 592 | const char *send = chophere = s + itemsize; |
| 593 | while (s < send) { |
| 594 | if (*s == '\r') { |
| 595 | itemsize = s - item; |
| 596 | chophere = s; |
| 597 | break; |
| 598 | } |
| 599 | if (*s++ & ~31) |
| 600 | gotsome = TRUE; |
| 601 | } |
| 602 | } |
| 603 | else { |
| 604 | const char *send; |
| 605 | itemsize = fieldsize; |
| 606 | itembytes = itemsize; |
| 607 | sv_pos_u2b(sv, &itembytes, 0); |
| 608 | send = chophere = s + itembytes; |
| 609 | while (s < send || (s == send && isSPACE(*s))) { |
| 610 | if (isSPACE(*s)) { |
| 611 | if (chopspace) |
| 612 | chophere = s; |
| 613 | if (*s == '\r') |
| 614 | break; |
| 615 | } |
| 616 | else { |
| 617 | if (*s & ~31) |
| 618 | gotsome = TRUE; |
| 619 | if (strchr(PL_chopset, *s)) |
| 620 | chophere = s + 1; |
| 621 | } |
| 622 | s++; |
| 623 | } |
| 624 | itemsize = chophere - item; |
| 625 | sv_pos_b2u(sv, &itemsize); |
| 626 | } |
| 627 | item_is_utf8 = TRUE; |
| 628 | break; |
| 629 | } |
| 630 | } |
| 631 | item_is_utf8 = FALSE; |
| 632 | if (itemsize <= fieldsize) { |
| 633 | const char *const send = chophere = s + itemsize; |
| 634 | while (s < send) { |
| 635 | if (*s == '\r') { |
| 636 | itemsize = s - item; |
| 637 | chophere = s; |
| 638 | break; |
| 639 | } |
| 640 | if (*s++ & ~31) |
| 641 | gotsome = TRUE; |
| 642 | } |
| 643 | } |
| 644 | else { |
| 645 | const char *send; |
| 646 | itemsize = fieldsize; |
| 647 | send = chophere = s + itemsize; |
| 648 | while (s < send || (s == send && isSPACE(*s))) { |
| 649 | if (isSPACE(*s)) { |
| 650 | if (chopspace) |
| 651 | chophere = s; |
| 652 | if (*s == '\r') |
| 653 | break; |
| 654 | } |
| 655 | else { |
| 656 | if (*s & ~31) |
| 657 | gotsome = TRUE; |
| 658 | if (strchr(PL_chopset, *s)) |
| 659 | chophere = s + 1; |
| 660 | } |
| 661 | s++; |
| 662 | } |
| 663 | itemsize = chophere - item; |
| 664 | } |
| 665 | break; |
| 666 | } |
| 667 | |
| 668 | case FF_SPACE: |
| 669 | arg = fieldsize - itemsize; |
| 670 | if (arg) { |
| 671 | fieldsize -= arg; |
| 672 | while (arg-- > 0) |
| 673 | *t++ = ' '; |
| 674 | } |
| 675 | break; |
| 676 | |
| 677 | case FF_HALFSPACE: |
| 678 | arg = fieldsize - itemsize; |
| 679 | if (arg) { |
| 680 | arg /= 2; |
| 681 | fieldsize -= arg; |
| 682 | while (arg-- > 0) |
| 683 | *t++ = ' '; |
| 684 | } |
| 685 | break; |
| 686 | |
| 687 | case FF_ITEM: |
| 688 | { |
| 689 | const char *s = item; |
| 690 | arg = itemsize; |
| 691 | if (item_is_utf8) { |
| 692 | if (!targ_is_utf8) { |
| 693 | SvCUR_set(PL_formtarget, t - SvPVX_const(PL_formtarget)); |
| 694 | *t = '\0'; |
| 695 | sv_utf8_upgrade(PL_formtarget); |
| 696 | SvGROW(PL_formtarget, SvCUR(PL_formtarget) + fudge + 1); |
| 697 | t = SvEND(PL_formtarget); |
| 698 | targ_is_utf8 = TRUE; |
| 699 | } |
| 700 | while (arg--) { |
| 701 | if (UTF8_IS_CONTINUED(*s)) { |
| 702 | STRLEN skip = UTF8SKIP(s); |
| 703 | switch (skip) { |
| 704 | default: |
| 705 | Move(s,t,skip,char); |
| 706 | s += skip; |
| 707 | t += skip; |
| 708 | break; |
| 709 | case 7: *t++ = *s++; |
| 710 | case 6: *t++ = *s++; |
| 711 | case 5: *t++ = *s++; |
| 712 | case 4: *t++ = *s++; |
| 713 | case 3: *t++ = *s++; |
| 714 | case 2: *t++ = *s++; |
| 715 | case 1: *t++ = *s++; |
| 716 | } |
| 717 | } |
| 718 | else { |
| 719 | if ( !((*t++ = *s++) & ~31) ) |
| 720 | t[-1] = ' '; |
| 721 | } |
| 722 | } |
| 723 | break; |
| 724 | } |
| 725 | if (targ_is_utf8 && !item_is_utf8) { |
| 726 | SvCUR_set(PL_formtarget, t - SvPVX_const(PL_formtarget)); |
| 727 | *t = '\0'; |
| 728 | sv_catpvn_utf8_upgrade(PL_formtarget, s, arg, nsv); |
| 729 | for (; t < SvEND(PL_formtarget); t++) { |
| 730 | #ifdef EBCDIC |
| 731 | const int ch = *t; |
| 732 | if (iscntrl(ch)) |
| 733 | #else |
| 734 | if (!(*t & ~31)) |
| 735 | #endif |
| 736 | *t = ' '; |
| 737 | } |
| 738 | break; |
| 739 | } |
| 740 | while (arg--) { |
| 741 | #ifdef EBCDIC |
| 742 | const int ch = *t++ = *s++; |
| 743 | if (iscntrl(ch)) |
| 744 | #else |
| 745 | if ( !((*t++ = *s++) & ~31) ) |
| 746 | #endif |
| 747 | t[-1] = ' '; |
| 748 | } |
| 749 | break; |
| 750 | } |
| 751 | |
| 752 | case FF_CHOP: |
| 753 | { |
| 754 | const char *s = chophere; |
| 755 | if (chopspace) { |
| 756 | while (isSPACE(*s)) |
| 757 | s++; |
| 758 | } |
| 759 | sv_chop(sv,s); |
| 760 | SvSETMAGIC(sv); |
| 761 | break; |
| 762 | } |
| 763 | |
| 764 | case FF_LINESNGL: |
| 765 | chopspace = 0; |
| 766 | oneline = TRUE; |
| 767 | goto ff_line; |
| 768 | case FF_LINEGLOB: |
| 769 | oneline = FALSE; |
| 770 | ff_line: |
| 771 | { |
| 772 | const char *s = item = SvPV_const(sv, len); |
| 773 | itemsize = len; |
| 774 | if ((item_is_utf8 = DO_UTF8(sv))) |
| 775 | itemsize = sv_len_utf8(sv); |
| 776 | if (itemsize) { |
| 777 | bool chopped = FALSE; |
| 778 | const char *const send = s + len; |
| 779 | gotsome = TRUE; |
| 780 | chophere = s + itemsize; |
| 781 | while (s < send) { |
| 782 | if (*s++ == '\n') { |
| 783 | if (oneline) { |
| 784 | chopped = TRUE; |
| 785 | chophere = s; |
| 786 | break; |
| 787 | } else { |
| 788 | if (s == send) { |
| 789 | itemsize--; |
| 790 | chopped = TRUE; |
| 791 | } else |
| 792 | lines++; |
| 793 | } |
| 794 | } |
| 795 | } |
| 796 | SvCUR_set(PL_formtarget, t - SvPVX_const(PL_formtarget)); |
| 797 | if (targ_is_utf8) |
| 798 | SvUTF8_on(PL_formtarget); |
| 799 | if (oneline) { |
| 800 | SvCUR_set(sv, chophere - item); |
| 801 | sv_catsv(PL_formtarget, sv); |
| 802 | SvCUR_set(sv, itemsize); |
| 803 | } else |
| 804 | sv_catsv(PL_formtarget, sv); |
| 805 | if (chopped) |
| 806 | SvCUR_set(PL_formtarget, SvCUR(PL_formtarget) - 1); |
| 807 | SvGROW(PL_formtarget, SvCUR(PL_formtarget) + fudge + 1); |
| 808 | t = SvPVX(PL_formtarget) + SvCUR(PL_formtarget); |
| 809 | if (item_is_utf8) |
| 810 | targ_is_utf8 = TRUE; |
| 811 | } |
| 812 | break; |
| 813 | } |
| 814 | |
| 815 | case FF_0DECIMAL: |
| 816 | arg = *fpc++; |
| 817 | #if defined(USE_LONG_DOUBLE) |
| 818 | fmt = (const char *) |
| 819 | ((arg & 256) ? |
| 820 | "%#0*.*" PERL_PRIfldbl : "%0*.*" PERL_PRIfldbl); |
| 821 | #else |
| 822 | fmt = (const char *) |
| 823 | ((arg & 256) ? |
| 824 | "%#0*.*f" : "%0*.*f"); |
| 825 | #endif |
| 826 | goto ff_dec; |
| 827 | case FF_DECIMAL: |
| 828 | arg = *fpc++; |
| 829 | #if defined(USE_LONG_DOUBLE) |
| 830 | fmt = (const char *) |
| 831 | ((arg & 256) ? "%#*.*" PERL_PRIfldbl : "%*.*" PERL_PRIfldbl); |
| 832 | #else |
| 833 | fmt = (const char *) |
| 834 | ((arg & 256) ? "%#*.*f" : "%*.*f"); |
| 835 | #endif |
| 836 | ff_dec: |
| 837 | /* If the field is marked with ^ and the value is undefined, |
| 838 | blank it out. */ |
| 839 | if ((arg & 512) && !SvOK(sv)) { |
| 840 | arg = fieldsize; |
| 841 | while (arg--) |
| 842 | *t++ = ' '; |
| 843 | break; |
| 844 | } |
| 845 | gotsome = TRUE; |
| 846 | value = SvNV(sv); |
| 847 | /* overflow evidence */ |
| 848 | if (num_overflow(value, fieldsize, arg)) { |
| 849 | arg = fieldsize; |
| 850 | while (arg--) |
| 851 | *t++ = '#'; |
| 852 | break; |
| 853 | } |
| 854 | /* Formats aren't yet marked for locales, so assume "yes". */ |
| 855 | { |
| 856 | STORE_NUMERIC_STANDARD_SET_LOCAL(); |
| 857 | my_snprintf(t, SvLEN(PL_formtarget) - (t - SvPVX(PL_formtarget)), fmt, (int) fieldsize, (int) arg & 255, value); |
| 858 | RESTORE_NUMERIC_STANDARD(); |
| 859 | } |
| 860 | t += fieldsize; |
| 861 | break; |
| 862 | |
| 863 | case FF_NEWLINE: |
| 864 | f++; |
| 865 | while (t-- > linemark && *t == ' ') ; |
| 866 | t++; |
| 867 | *t++ = '\n'; |
| 868 | break; |
| 869 | |
| 870 | case FF_BLANK: |
| 871 | arg = *fpc++; |
| 872 | if (gotsome) { |
| 873 | if (arg) { /* repeat until fields exhausted? */ |
| 874 | *t = '\0'; |
| 875 | SvCUR_set(PL_formtarget, t - SvPVX_const(PL_formtarget)); |
| 876 | lines += FmLINES(PL_formtarget); |
| 877 | if (lines == 200) { |
| 878 | arg = t - linemark; |
| 879 | if (strnEQ(linemark, linemark - arg, arg)) |
| 880 | DIE(aTHX_ "Runaway format"); |
| 881 | } |
| 882 | if (targ_is_utf8) |
| 883 | SvUTF8_on(PL_formtarget); |
| 884 | FmLINES(PL_formtarget) = lines; |
| 885 | SP = ORIGMARK; |
| 886 | RETURNOP(cLISTOP->op_first); |
| 887 | } |
| 888 | } |
| 889 | else { |
| 890 | t = linemark; |
| 891 | lines--; |
| 892 | } |
| 893 | break; |
| 894 | |
| 895 | case FF_MORE: |
| 896 | { |
| 897 | const char *s = chophere; |
| 898 | const char *send = item + len; |
| 899 | if (chopspace) { |
| 900 | while (isSPACE(*s) && (s < send)) |
| 901 | s++; |
| 902 | } |
| 903 | if (s < send) { |
| 904 | char *s1; |
| 905 | arg = fieldsize - itemsize; |
| 906 | if (arg) { |
| 907 | fieldsize -= arg; |
| 908 | while (arg-- > 0) |
| 909 | *t++ = ' '; |
| 910 | } |
| 911 | s1 = t - 3; |
| 912 | if (strnEQ(s1," ",3)) { |
| 913 | while (s1 > SvPVX_const(PL_formtarget) && isSPACE(s1[-1])) |
| 914 | s1--; |
| 915 | } |
| 916 | *s1++ = '.'; |
| 917 | *s1++ = '.'; |
| 918 | *s1++ = '.'; |
| 919 | } |
| 920 | break; |
| 921 | } |
| 922 | case FF_END: |
| 923 | *t = '\0'; |
| 924 | SvCUR_set(PL_formtarget, t - SvPVX_const(PL_formtarget)); |
| 925 | if (targ_is_utf8) |
| 926 | SvUTF8_on(PL_formtarget); |
| 927 | FmLINES(PL_formtarget) += lines; |
| 928 | SP = ORIGMARK; |
| 929 | RETPUSHYES; |
| 930 | } |
| 931 | } |
| 932 | } |
| 933 | |
| 934 | PP(pp_grepstart) |
| 935 | { |
| 936 | dVAR; dSP; |
| 937 | SV *src; |
| 938 | |
| 939 | if (PL_stack_base + *PL_markstack_ptr == SP) { |
| 940 | (void)POPMARK; |
| 941 | if (GIMME_V == G_SCALAR) |
| 942 | mXPUSHi(0); |
| 943 | RETURNOP(PL_op->op_next->op_next); |
| 944 | } |
| 945 | PL_stack_sp = PL_stack_base + *PL_markstack_ptr + 1; |
| 946 | pp_pushmark(); /* push dst */ |
| 947 | pp_pushmark(); /* push src */ |
| 948 | ENTER; /* enter outer scope */ |
| 949 | |
| 950 | SAVETMPS; |
| 951 | if (PL_op->op_private & OPpGREP_LEX) |
| 952 | SAVESPTR(PAD_SVl(PL_op->op_targ)); |
| 953 | else |
| 954 | SAVE_DEFSV; |
| 955 | ENTER; /* enter inner scope */ |
| 956 | SAVEVPTR(PL_curpm); |
| 957 | |
| 958 | src = PL_stack_base[*PL_markstack_ptr]; |
| 959 | SvTEMP_off(src); |
| 960 | if (PL_op->op_private & OPpGREP_LEX) |
| 961 | PAD_SVl(PL_op->op_targ) = src; |
| 962 | else |
| 963 | DEFSV = src; |
| 964 | |
| 965 | PUTBACK; |
| 966 | if (PL_op->op_type == OP_MAPSTART) |
| 967 | pp_pushmark(); /* push top */ |
| 968 | return ((LOGOP*)PL_op->op_next)->op_other; |
| 969 | } |
| 970 | |
| 971 | PP(pp_mapwhile) |
| 972 | { |
| 973 | dVAR; dSP; |
| 974 | const I32 gimme = GIMME_V; |
| 975 | I32 items = (SP - PL_stack_base) - *PL_markstack_ptr; /* how many new items */ |
| 976 | I32 count; |
| 977 | I32 shift; |
| 978 | SV** src; |
| 979 | SV** dst; |
| 980 | |
| 981 | /* first, move source pointer to the next item in the source list */ |
| 982 | ++PL_markstack_ptr[-1]; |
| 983 | |
| 984 | /* if there are new items, push them into the destination list */ |
| 985 | if (items && gimme != G_VOID) { |
| 986 | /* might need to make room back there first */ |
| 987 | if (items > PL_markstack_ptr[-1] - PL_markstack_ptr[-2]) { |
| 988 | /* XXX this implementation is very pessimal because the stack |
| 989 | * is repeatedly extended for every set of items. Is possible |
| 990 | * to do this without any stack extension or copying at all |
| 991 | * by maintaining a separate list over which the map iterates |
| 992 | * (like foreach does). --gsar */ |
| 993 | |
| 994 | /* everything in the stack after the destination list moves |
| 995 | * towards the end the stack by the amount of room needed */ |
| 996 | shift = items - (PL_markstack_ptr[-1] - PL_markstack_ptr[-2]); |
| 997 | |
| 998 | /* items to shift up (accounting for the moved source pointer) */ |
| 999 | count = (SP - PL_stack_base) - (PL_markstack_ptr[-1] - 1); |
| 1000 | |
| 1001 | /* This optimization is by Ben Tilly and it does |
| 1002 | * things differently from what Sarathy (gsar) |
| 1003 | * is describing. The downside of this optimization is |
| 1004 | * that leaves "holes" (uninitialized and hopefully unused areas) |
| 1005 | * to the Perl stack, but on the other hand this |
| 1006 | * shouldn't be a problem. If Sarathy's idea gets |
| 1007 | * implemented, this optimization should become |
| 1008 | * irrelevant. --jhi */ |
| 1009 | if (shift < count) |
| 1010 | shift = count; /* Avoid shifting too often --Ben Tilly */ |
| 1011 | |
| 1012 | EXTEND(SP,shift); |
| 1013 | src = SP; |
| 1014 | dst = (SP += shift); |
| 1015 | PL_markstack_ptr[-1] += shift; |
| 1016 | *PL_markstack_ptr += shift; |
| 1017 | while (count--) |
| 1018 | *dst-- = *src--; |
| 1019 | } |
| 1020 | /* copy the new items down to the destination list */ |
| 1021 | dst = PL_stack_base + (PL_markstack_ptr[-2] += items) - 1; |
| 1022 | if (gimme == G_ARRAY) { |
| 1023 | while (items-- > 0) |
| 1024 | *dst-- = SvTEMP(TOPs) ? POPs : sv_mortalcopy(POPs); |
| 1025 | } |
| 1026 | else { |
| 1027 | /* scalar context: we don't care about which values map returns |
| 1028 | * (we use undef here). And so we certainly don't want to do mortal |
| 1029 | * copies of meaningless values. */ |
| 1030 | while (items-- > 0) { |
| 1031 | (void)POPs; |
| 1032 | *dst-- = &PL_sv_undef; |
| 1033 | } |
| 1034 | } |
| 1035 | } |
| 1036 | LEAVE; /* exit inner scope */ |
| 1037 | |
| 1038 | /* All done yet? */ |
| 1039 | if (PL_markstack_ptr[-1] > *PL_markstack_ptr) { |
| 1040 | |
| 1041 | (void)POPMARK; /* pop top */ |
| 1042 | LEAVE; /* exit outer scope */ |
| 1043 | (void)POPMARK; /* pop src */ |
| 1044 | items = --*PL_markstack_ptr - PL_markstack_ptr[-1]; |
| 1045 | (void)POPMARK; /* pop dst */ |
| 1046 | SP = PL_stack_base + POPMARK; /* pop original mark */ |
| 1047 | if (gimme == G_SCALAR) { |
| 1048 | if (PL_op->op_private & OPpGREP_LEX) { |
| 1049 | SV* sv = sv_newmortal(); |
| 1050 | sv_setiv(sv, items); |
| 1051 | PUSHs(sv); |
| 1052 | } |
| 1053 | else { |
| 1054 | dTARGET; |
| 1055 | XPUSHi(items); |
| 1056 | } |
| 1057 | } |
| 1058 | else if (gimme == G_ARRAY) |
| 1059 | SP += items; |
| 1060 | RETURN; |
| 1061 | } |
| 1062 | else { |
| 1063 | SV *src; |
| 1064 | |
| 1065 | ENTER; /* enter inner scope */ |
| 1066 | SAVEVPTR(PL_curpm); |
| 1067 | |
| 1068 | /* set $_ to the new source item */ |
| 1069 | src = PL_stack_base[PL_markstack_ptr[-1]]; |
| 1070 | SvTEMP_off(src); |
| 1071 | if (PL_op->op_private & OPpGREP_LEX) |
| 1072 | PAD_SVl(PL_op->op_targ) = src; |
| 1073 | else |
| 1074 | DEFSV = src; |
| 1075 | |
| 1076 | RETURNOP(cLOGOP->op_other); |
| 1077 | } |
| 1078 | } |
| 1079 | |
| 1080 | /* Range stuff. */ |
| 1081 | |
| 1082 | PP(pp_range) |
| 1083 | { |
| 1084 | dVAR; |
| 1085 | if (GIMME == G_ARRAY) |
| 1086 | return NORMAL; |
| 1087 | if (SvTRUEx(PAD_SV(PL_op->op_targ))) |
| 1088 | return cLOGOP->op_other; |
| 1089 | else |
| 1090 | return NORMAL; |
| 1091 | } |
| 1092 | |
| 1093 | PP(pp_flip) |
| 1094 | { |
| 1095 | dVAR; |
| 1096 | dSP; |
| 1097 | |
| 1098 | if (GIMME == G_ARRAY) { |
| 1099 | RETURNOP(((LOGOP*)cUNOP->op_first)->op_other); |
| 1100 | } |
| 1101 | else { |
| 1102 | dTOPss; |
| 1103 | SV * const targ = PAD_SV(PL_op->op_targ); |
| 1104 | int flip = 0; |
| 1105 | |
| 1106 | if (PL_op->op_private & OPpFLIP_LINENUM) { |
| 1107 | if (GvIO(PL_last_in_gv)) { |
| 1108 | flip = SvIV(sv) == (IV)IoLINES(GvIOp(PL_last_in_gv)); |
| 1109 | } |
| 1110 | else { |
| 1111 | GV * const gv = gv_fetchpvs(".", GV_ADD|GV_NOTQUAL, SVt_PV); |
| 1112 | if (gv && GvSV(gv)) |
| 1113 | flip = SvIV(sv) == SvIV(GvSV(gv)); |
| 1114 | } |
| 1115 | } else { |
| 1116 | flip = SvTRUE(sv); |
| 1117 | } |
| 1118 | if (flip) { |
| 1119 | sv_setiv(PAD_SV(cUNOP->op_first->op_targ), 1); |
| 1120 | if (PL_op->op_flags & OPf_SPECIAL) { |
| 1121 | sv_setiv(targ, 1); |
| 1122 | SETs(targ); |
| 1123 | RETURN; |
| 1124 | } |
| 1125 | else { |
| 1126 | sv_setiv(targ, 0); |
| 1127 | SP--; |
| 1128 | RETURNOP(((LOGOP*)cUNOP->op_first)->op_other); |
| 1129 | } |
| 1130 | } |
| 1131 | sv_setpvn(TARG, "", 0); |
| 1132 | SETs(targ); |
| 1133 | RETURN; |
| 1134 | } |
| 1135 | } |
| 1136 | |
| 1137 | /* This code tries to decide if "$left .. $right" should use the |
| 1138 | magical string increment, or if the range is numeric (we make |
| 1139 | an exception for .."0" [#18165]). AMS 20021031. */ |
| 1140 | |
| 1141 | #define RANGE_IS_NUMERIC(left,right) ( \ |
| 1142 | SvNIOKp(left) || (SvOK(left) && !SvPOKp(left)) || \ |
| 1143 | SvNIOKp(right) || (SvOK(right) && !SvPOKp(right)) || \ |
| 1144 | (((!SvOK(left) && SvOK(right)) || ((!SvOK(left) || \ |
| 1145 | looks_like_number(left)) && SvPOKp(left) && *SvPVX_const(left) != '0')) \ |
| 1146 | && (!SvOK(right) || looks_like_number(right)))) |
| 1147 | |
| 1148 | PP(pp_flop) |
| 1149 | { |
| 1150 | dVAR; dSP; |
| 1151 | |
| 1152 | if (GIMME == G_ARRAY) { |
| 1153 | dPOPPOPssrl; |
| 1154 | |
| 1155 | SvGETMAGIC(left); |
| 1156 | SvGETMAGIC(right); |
| 1157 | |
| 1158 | if (RANGE_IS_NUMERIC(left,right)) { |
| 1159 | register IV i, j; |
| 1160 | IV max; |
| 1161 | if ((SvOK(left) && SvNV(left) < IV_MIN) || |
| 1162 | (SvOK(right) && SvNV(right) > IV_MAX)) |
| 1163 | DIE(aTHX_ "Range iterator outside integer range"); |
| 1164 | i = SvIV(left); |
| 1165 | max = SvIV(right); |
| 1166 | if (max >= i) { |
| 1167 | j = max - i + 1; |
| 1168 | EXTEND_MORTAL(j); |
| 1169 | EXTEND(SP, j); |
| 1170 | } |
| 1171 | else |
| 1172 | j = 0; |
| 1173 | while (j--) { |
| 1174 | SV * const sv = sv_2mortal(newSViv(i++)); |
| 1175 | PUSHs(sv); |
| 1176 | } |
| 1177 | } |
| 1178 | else { |
| 1179 | SV * const final = sv_mortalcopy(right); |
| 1180 | STRLEN len; |
| 1181 | const char * const tmps = SvPV_const(final, len); |
| 1182 | |
| 1183 | SV *sv = sv_mortalcopy(left); |
| 1184 | SvPV_force_nolen(sv); |
| 1185 | while (!SvNIOKp(sv) && SvCUR(sv) <= len) { |
| 1186 | XPUSHs(sv); |
| 1187 | if (strEQ(SvPVX_const(sv),tmps)) |
| 1188 | break; |
| 1189 | sv = sv_2mortal(newSVsv(sv)); |
| 1190 | sv_inc(sv); |
| 1191 | } |
| 1192 | } |
| 1193 | } |
| 1194 | else { |
| 1195 | dTOPss; |
| 1196 | SV * const targ = PAD_SV(cUNOP->op_first->op_targ); |
| 1197 | int flop = 0; |
| 1198 | sv_inc(targ); |
| 1199 | |
| 1200 | if (PL_op->op_private & OPpFLIP_LINENUM) { |
| 1201 | if (GvIO(PL_last_in_gv)) { |
| 1202 | flop = SvIV(sv) == (IV)IoLINES(GvIOp(PL_last_in_gv)); |
| 1203 | } |
| 1204 | else { |
| 1205 | GV * const gv = gv_fetchpvs(".", GV_ADD|GV_NOTQUAL, SVt_PV); |
| 1206 | if (gv && GvSV(gv)) flop = SvIV(sv) == SvIV(GvSV(gv)); |
| 1207 | } |
| 1208 | } |
| 1209 | else { |
| 1210 | flop = SvTRUE(sv); |
| 1211 | } |
| 1212 | |
| 1213 | if (flop) { |
| 1214 | sv_setiv(PAD_SV(((UNOP*)cUNOP->op_first)->op_first->op_targ), 0); |
| 1215 | sv_catpvs(targ, "E0"); |
| 1216 | } |
| 1217 | SETs(targ); |
| 1218 | } |
| 1219 | |
| 1220 | RETURN; |
| 1221 | } |
| 1222 | |
| 1223 | /* Control. */ |
| 1224 | |
| 1225 | static const char * const context_name[] = { |
| 1226 | "pseudo-block", |
| 1227 | "subroutine", |
| 1228 | "eval", |
| 1229 | "loop", |
| 1230 | "substitution", |
| 1231 | "block", |
| 1232 | "format", |
| 1233 | "given", |
| 1234 | "when" |
| 1235 | }; |
| 1236 | |
| 1237 | STATIC I32 |
| 1238 | S_dopoptolabel(pTHX_ const char *label) |
| 1239 | { |
| 1240 | dVAR; |
| 1241 | register I32 i; |
| 1242 | |
| 1243 | for (i = cxstack_ix; i >= 0; i--) { |
| 1244 | register const PERL_CONTEXT * const cx = &cxstack[i]; |
| 1245 | switch (CxTYPE(cx)) { |
| 1246 | case CXt_SUBST: |
| 1247 | case CXt_SUB: |
| 1248 | case CXt_FORMAT: |
| 1249 | case CXt_EVAL: |
| 1250 | case CXt_NULL: |
| 1251 | case CXt_GIVEN: |
| 1252 | case CXt_WHEN: |
| 1253 | if (ckWARN(WARN_EXITING)) |
| 1254 | Perl_warner(aTHX_ packWARN(WARN_EXITING), "Exiting %s via %s", |
| 1255 | context_name[CxTYPE(cx)], OP_NAME(PL_op)); |
| 1256 | if (CxTYPE(cx) == CXt_NULL) |
| 1257 | return -1; |
| 1258 | break; |
| 1259 | case CXt_LOOP: |
| 1260 | if ( !CxLABEL(cx) || strNE(label, CxLABEL(cx)) ) { |
| 1261 | DEBUG_l(Perl_deb(aTHX_ "(Skipping label #%ld %s)\n", |
| 1262 | (long)i, CxLABEL(cx))); |
| 1263 | continue; |
| 1264 | } |
| 1265 | DEBUG_l( Perl_deb(aTHX_ "(Found label #%ld %s)\n", (long)i, label)); |
| 1266 | return i; |
| 1267 | } |
| 1268 | } |
| 1269 | return i; |
| 1270 | } |
| 1271 | |
| 1272 | |
| 1273 | |
| 1274 | I32 |
| 1275 | Perl_dowantarray(pTHX) |
| 1276 | { |
| 1277 | dVAR; |
| 1278 | const I32 gimme = block_gimme(); |
| 1279 | return (gimme == G_VOID) ? G_SCALAR : gimme; |
| 1280 | } |
| 1281 | |
| 1282 | I32 |
| 1283 | Perl_block_gimme(pTHX) |
| 1284 | { |
| 1285 | dVAR; |
| 1286 | const I32 cxix = dopoptosub(cxstack_ix); |
| 1287 | if (cxix < 0) |
| 1288 | return G_VOID; |
| 1289 | |
| 1290 | switch (cxstack[cxix].blk_gimme) { |
| 1291 | case G_VOID: |
| 1292 | return G_VOID; |
| 1293 | case G_SCALAR: |
| 1294 | return G_SCALAR; |
| 1295 | case G_ARRAY: |
| 1296 | return G_ARRAY; |
| 1297 | default: |
| 1298 | Perl_croak(aTHX_ "panic: bad gimme: %d\n", cxstack[cxix].blk_gimme); |
| 1299 | /* NOTREACHED */ |
| 1300 | return 0; |
| 1301 | } |
| 1302 | } |
| 1303 | |
| 1304 | I32 |
| 1305 | Perl_is_lvalue_sub(pTHX) |
| 1306 | { |
| 1307 | dVAR; |
| 1308 | const I32 cxix = dopoptosub(cxstack_ix); |
| 1309 | assert(cxix >= 0); /* We should only be called from inside subs */ |
| 1310 | |
| 1311 | if (CxLVAL(cxstack + cxix) && CvLVALUE(cxstack[cxix].blk_sub.cv)) |
| 1312 | return CxLVAL(cxstack + cxix); |
| 1313 | else |
| 1314 | return 0; |
| 1315 | } |
| 1316 | |
| 1317 | STATIC I32 |
| 1318 | S_dopoptosub_at(pTHX_ const PERL_CONTEXT *cxstk, I32 startingblock) |
| 1319 | { |
| 1320 | dVAR; |
| 1321 | I32 i; |
| 1322 | for (i = startingblock; i >= 0; i--) { |
| 1323 | register const PERL_CONTEXT * const cx = &cxstk[i]; |
| 1324 | switch (CxTYPE(cx)) { |
| 1325 | default: |
| 1326 | continue; |
| 1327 | case CXt_EVAL: |
| 1328 | case CXt_SUB: |
| 1329 | case CXt_FORMAT: |
| 1330 | DEBUG_l( Perl_deb(aTHX_ "(Found sub #%ld)\n", (long)i)); |
| 1331 | return i; |
| 1332 | } |
| 1333 | } |
| 1334 | return i; |
| 1335 | } |
| 1336 | |
| 1337 | STATIC I32 |
| 1338 | S_dopoptoeval(pTHX_ I32 startingblock) |
| 1339 | { |
| 1340 | dVAR; |
| 1341 | I32 i; |
| 1342 | for (i = startingblock; i >= 0; i--) { |
| 1343 | register const PERL_CONTEXT *cx = &cxstack[i]; |
| 1344 | switch (CxTYPE(cx)) { |
| 1345 | default: |
| 1346 | continue; |
| 1347 | case CXt_EVAL: |
| 1348 | DEBUG_l( Perl_deb(aTHX_ "(Found eval #%ld)\n", (long)i)); |
| 1349 | return i; |
| 1350 | } |
| 1351 | } |
| 1352 | return i; |
| 1353 | } |
| 1354 | |
| 1355 | STATIC I32 |
| 1356 | S_dopoptoloop(pTHX_ I32 startingblock) |
| 1357 | { |
| 1358 | dVAR; |
| 1359 | I32 i; |
| 1360 | for (i = startingblock; i >= 0; i--) { |
| 1361 | register const PERL_CONTEXT * const cx = &cxstack[i]; |
| 1362 | switch (CxTYPE(cx)) { |
| 1363 | case CXt_SUBST: |
| 1364 | case CXt_SUB: |
| 1365 | case CXt_FORMAT: |
| 1366 | case CXt_EVAL: |
| 1367 | case CXt_NULL: |
| 1368 | if (ckWARN(WARN_EXITING)) |
| 1369 | Perl_warner(aTHX_ packWARN(WARN_EXITING), "Exiting %s via %s", |
| 1370 | context_name[CxTYPE(cx)], OP_NAME(PL_op)); |
| 1371 | if ((CxTYPE(cx)) == CXt_NULL) |
| 1372 | return -1; |
| 1373 | break; |
| 1374 | case CXt_LOOP: |
| 1375 | DEBUG_l( Perl_deb(aTHX_ "(Found loop #%ld)\n", (long)i)); |
| 1376 | return i; |
| 1377 | } |
| 1378 | } |
| 1379 | return i; |
| 1380 | } |
| 1381 | |
| 1382 | STATIC I32 |
| 1383 | S_dopoptogiven(pTHX_ I32 startingblock) |
| 1384 | { |
| 1385 | dVAR; |
| 1386 | I32 i; |
| 1387 | for (i = startingblock; i >= 0; i--) { |
| 1388 | register const PERL_CONTEXT *cx = &cxstack[i]; |
| 1389 | switch (CxTYPE(cx)) { |
| 1390 | default: |
| 1391 | continue; |
| 1392 | case CXt_GIVEN: |
| 1393 | DEBUG_l( Perl_deb(aTHX_ "(Found given #%ld)\n", (long)i)); |
| 1394 | return i; |
| 1395 | case CXt_LOOP: |
| 1396 | if (CxFOREACHDEF(cx)) { |
| 1397 | DEBUG_l( Perl_deb(aTHX_ "(Found foreach #%ld)\n", (long)i)); |
| 1398 | return i; |
| 1399 | } |
| 1400 | } |
| 1401 | } |
| 1402 | return i; |
| 1403 | } |
| 1404 | |
| 1405 | STATIC I32 |
| 1406 | S_dopoptowhen(pTHX_ I32 startingblock) |
| 1407 | { |
| 1408 | dVAR; |
| 1409 | I32 i; |
| 1410 | for (i = startingblock; i >= 0; i--) { |
| 1411 | register const PERL_CONTEXT *cx = &cxstack[i]; |
| 1412 | switch (CxTYPE(cx)) { |
| 1413 | default: |
| 1414 | continue; |
| 1415 | case CXt_WHEN: |
| 1416 | DEBUG_l( Perl_deb(aTHX_ "(Found when #%ld)\n", (long)i)); |
| 1417 | return i; |
| 1418 | } |
| 1419 | } |
| 1420 | return i; |
| 1421 | } |
| 1422 | |
| 1423 | void |
| 1424 | Perl_dounwind(pTHX_ I32 cxix) |
| 1425 | { |
| 1426 | dVAR; |
| 1427 | I32 optype; |
| 1428 | |
| 1429 | while (cxstack_ix > cxix) { |
| 1430 | SV *sv; |
| 1431 | register PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
| 1432 | DEBUG_l(PerlIO_printf(Perl_debug_log, "Unwinding block %ld, type %s\n", |
| 1433 | (long) cxstack_ix, PL_block_type[CxTYPE(cx)])); |
| 1434 | /* Note: we don't need to restore the base context info till the end. */ |
| 1435 | switch (CxTYPE(cx)) { |
| 1436 | case CXt_SUBST: |
| 1437 | POPSUBST(cx); |
| 1438 | continue; /* not break */ |
| 1439 | case CXt_SUB: |
| 1440 | POPSUB(cx,sv); |
| 1441 | LEAVESUB(sv); |
| 1442 | break; |
| 1443 | case CXt_EVAL: |
| 1444 | POPEVAL(cx); |
| 1445 | break; |
| 1446 | case CXt_LOOP: |
| 1447 | POPLOOP(cx); |
| 1448 | break; |
| 1449 | case CXt_NULL: |
| 1450 | break; |
| 1451 | case CXt_FORMAT: |
| 1452 | POPFORMAT(cx); |
| 1453 | break; |
| 1454 | } |
| 1455 | cxstack_ix--; |
| 1456 | } |
| 1457 | PERL_UNUSED_VAR(optype); |
| 1458 | } |
| 1459 | |
| 1460 | void |
| 1461 | Perl_qerror(pTHX_ SV *err) |
| 1462 | { |
| 1463 | dVAR; |
| 1464 | if (PL_in_eval) |
| 1465 | sv_catsv(ERRSV, err); |
| 1466 | else if (PL_errors) |
| 1467 | sv_catsv(PL_errors, err); |
| 1468 | else |
| 1469 | Perl_warn(aTHX_ "%"SVf, SVfARG(err)); |
| 1470 | if (PL_parser) |
| 1471 | ++PL_parser->error_count; |
| 1472 | } |
| 1473 | |
| 1474 | OP * |
| 1475 | Perl_die_where(pTHX_ const char *message, STRLEN msglen) |
| 1476 | { |
| 1477 | dVAR; |
| 1478 | |
| 1479 | if (PL_in_eval) { |
| 1480 | I32 cxix; |
| 1481 | I32 gimme; |
| 1482 | |
| 1483 | if (message) { |
| 1484 | if (PL_in_eval & EVAL_KEEPERR) { |
| 1485 | static const char prefix[] = "\t(in cleanup) "; |
| 1486 | SV * const err = ERRSV; |
| 1487 | const char *e = NULL; |
| 1488 | if (!SvPOK(err)) |
| 1489 | sv_setpvn(err,"",0); |
| 1490 | else if (SvCUR(err) >= sizeof(prefix)+msglen-1) { |
| 1491 | STRLEN len; |
| 1492 | e = SvPV_const(err, len); |
| 1493 | e += len - msglen; |
| 1494 | if (*e != *message || strNE(e,message)) |
| 1495 | e = NULL; |
| 1496 | } |
| 1497 | if (!e) { |
| 1498 | SvGROW(err, SvCUR(err)+sizeof(prefix)+msglen); |
| 1499 | sv_catpvn(err, prefix, sizeof(prefix)-1); |
| 1500 | sv_catpvn(err, message, msglen); |
| 1501 | if (ckWARN(WARN_MISC)) { |
| 1502 | const STRLEN start = SvCUR(err)-msglen-sizeof(prefix)+1; |
| 1503 | Perl_warner(aTHX_ packWARN(WARN_MISC), SvPVX_const(err)+start); |
| 1504 | } |
| 1505 | } |
| 1506 | } |
| 1507 | else { |
| 1508 | sv_setpvn(ERRSV, message, msglen); |
| 1509 | } |
| 1510 | } |
| 1511 | |
| 1512 | while ((cxix = dopoptoeval(cxstack_ix)) < 0 |
| 1513 | && PL_curstackinfo->si_prev) |
| 1514 | { |
| 1515 | dounwind(-1); |
| 1516 | POPSTACK; |
| 1517 | } |
| 1518 | |
| 1519 | if (cxix >= 0) { |
| 1520 | I32 optype; |
| 1521 | register PERL_CONTEXT *cx; |
| 1522 | SV **newsp; |
| 1523 | |
| 1524 | if (cxix < cxstack_ix) |
| 1525 | dounwind(cxix); |
| 1526 | |
| 1527 | POPBLOCK(cx,PL_curpm); |
| 1528 | if (CxTYPE(cx) != CXt_EVAL) { |
| 1529 | if (!message) |
| 1530 | message = SvPVx_const(ERRSV, msglen); |
| 1531 | PerlIO_write(Perl_error_log, (const char *)"panic: die ", 11); |
| 1532 | PerlIO_write(Perl_error_log, message, msglen); |
| 1533 | my_exit(1); |
| 1534 | } |
| 1535 | POPEVAL(cx); |
| 1536 | |
| 1537 | if (gimme == G_SCALAR) |
| 1538 | *++newsp = &PL_sv_undef; |
| 1539 | PL_stack_sp = newsp; |
| 1540 | |
| 1541 | LEAVE; |
| 1542 | |
| 1543 | /* LEAVE could clobber PL_curcop (see save_re_context()) |
| 1544 | * XXX it might be better to find a way to avoid messing with |
| 1545 | * PL_curcop in save_re_context() instead, but this is a more |
| 1546 | * minimal fix --GSAR */ |
| 1547 | PL_curcop = cx->blk_oldcop; |
| 1548 | |
| 1549 | if (optype == OP_REQUIRE) { |
| 1550 | const char* const msg = SvPVx_nolen_const(ERRSV); |
| 1551 | SV * const nsv = cx->blk_eval.old_namesv; |
| 1552 | (void)hv_store(GvHVn(PL_incgv), SvPVX_const(nsv), SvCUR(nsv), |
| 1553 | &PL_sv_undef, 0); |
| 1554 | DIE(aTHX_ "%sCompilation failed in require", |
| 1555 | *msg ? msg : "Unknown error\n"); |
| 1556 | } |
| 1557 | assert(CxTYPE(cx) == CXt_EVAL); |
| 1558 | return cx->blk_eval.retop; |
| 1559 | } |
| 1560 | } |
| 1561 | if (!message) |
| 1562 | message = SvPVx_const(ERRSV, msglen); |
| 1563 | |
| 1564 | write_to_stderr(message, msglen); |
| 1565 | my_failure_exit(); |
| 1566 | /* NOTREACHED */ |
| 1567 | return 0; |
| 1568 | } |
| 1569 | |
| 1570 | PP(pp_xor) |
| 1571 | { |
| 1572 | dVAR; dSP; dPOPTOPssrl; |
| 1573 | if (SvTRUE(left) != SvTRUE(right)) |
| 1574 | RETSETYES; |
| 1575 | else |
| 1576 | RETSETNO; |
| 1577 | } |
| 1578 | |
| 1579 | PP(pp_caller) |
| 1580 | { |
| 1581 | dVAR; |
| 1582 | dSP; |
| 1583 | register I32 cxix = dopoptosub(cxstack_ix); |
| 1584 | register const PERL_CONTEXT *cx; |
| 1585 | register const PERL_CONTEXT *ccstack = cxstack; |
| 1586 | const PERL_SI *top_si = PL_curstackinfo; |
| 1587 | I32 gimme; |
| 1588 | const char *stashname; |
| 1589 | I32 count = 0; |
| 1590 | |
| 1591 | if (MAXARG) |
| 1592 | count = POPi; |
| 1593 | |
| 1594 | for (;;) { |
| 1595 | /* we may be in a higher stacklevel, so dig down deeper */ |
| 1596 | while (cxix < 0 && top_si->si_type != PERLSI_MAIN) { |
| 1597 | top_si = top_si->si_prev; |
| 1598 | ccstack = top_si->si_cxstack; |
| 1599 | cxix = dopoptosub_at(ccstack, top_si->si_cxix); |
| 1600 | } |
| 1601 | if (cxix < 0) { |
| 1602 | if (GIMME != G_ARRAY) { |
| 1603 | EXTEND(SP, 1); |
| 1604 | RETPUSHUNDEF; |
| 1605 | } |
| 1606 | RETURN; |
| 1607 | } |
| 1608 | /* caller() should not report the automatic calls to &DB::sub */ |
| 1609 | if (PL_DBsub && GvCV(PL_DBsub) && cxix >= 0 && |
| 1610 | ccstack[cxix].blk_sub.cv == GvCV(PL_DBsub)) |
| 1611 | count++; |
| 1612 | if (!count--) |
| 1613 | break; |
| 1614 | cxix = dopoptosub_at(ccstack, cxix - 1); |
| 1615 | } |
| 1616 | |
| 1617 | cx = &ccstack[cxix]; |
| 1618 | if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) { |
| 1619 | const I32 dbcxix = dopoptosub_at(ccstack, cxix - 1); |
| 1620 | /* We expect that ccstack[dbcxix] is CXt_SUB, anyway, the |
| 1621 | field below is defined for any cx. */ |
| 1622 | /* caller() should not report the automatic calls to &DB::sub */ |
| 1623 | if (PL_DBsub && GvCV(PL_DBsub) && dbcxix >= 0 && ccstack[dbcxix].blk_sub.cv == GvCV(PL_DBsub)) |
| 1624 | cx = &ccstack[dbcxix]; |
| 1625 | } |
| 1626 | |
| 1627 | stashname = CopSTASHPV(cx->blk_oldcop); |
| 1628 | if (GIMME != G_ARRAY) { |
| 1629 | EXTEND(SP, 1); |
| 1630 | if (!stashname) |
| 1631 | PUSHs(&PL_sv_undef); |
| 1632 | else { |
| 1633 | dTARGET; |
| 1634 | sv_setpv(TARG, stashname); |
| 1635 | PUSHs(TARG); |
| 1636 | } |
| 1637 | RETURN; |
| 1638 | } |
| 1639 | |
| 1640 | EXTEND(SP, 11); |
| 1641 | |
| 1642 | if (!stashname) |
| 1643 | PUSHs(&PL_sv_undef); |
| 1644 | else |
| 1645 | mPUSHs(newSVpv(stashname, 0)); |
| 1646 | mPUSHs(newSVpv(OutCopFILE(cx->blk_oldcop), 0)); |
| 1647 | mPUSHi((I32)CopLINE(cx->blk_oldcop)); |
| 1648 | if (!MAXARG) |
| 1649 | RETURN; |
| 1650 | if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) { |
| 1651 | GV * const cvgv = CvGV(ccstack[cxix].blk_sub.cv); |
| 1652 | /* So is ccstack[dbcxix]. */ |
| 1653 | if (isGV(cvgv)) { |
| 1654 | SV * const sv = newSV(0); |
| 1655 | gv_efullname3(sv, cvgv, NULL); |
| 1656 | mPUSHs(sv); |
| 1657 | PUSHs(boolSV(CxHASARGS(cx))); |
| 1658 | } |
| 1659 | else { |
| 1660 | PUSHs(newSVpvs_flags("(unknown)", SVs_TEMP)); |
| 1661 | PUSHs(boolSV(CxHASARGS(cx))); |
| 1662 | } |
| 1663 | } |
| 1664 | else { |
| 1665 | PUSHs(newSVpvs_flags("(eval)", SVs_TEMP)); |
| 1666 | mPUSHi(0); |
| 1667 | } |
| 1668 | gimme = (I32)cx->blk_gimme; |
| 1669 | if (gimme == G_VOID) |
| 1670 | PUSHs(&PL_sv_undef); |
| 1671 | else |
| 1672 | PUSHs(boolSV((gimme & G_WANT) == G_ARRAY)); |
| 1673 | if (CxTYPE(cx) == CXt_EVAL) { |
| 1674 | /* eval STRING */ |
| 1675 | if (cx->blk_eval.old_op_type == OP_ENTEREVAL) { |
| 1676 | PUSHs(cx->blk_eval.cur_text); |
| 1677 | PUSHs(&PL_sv_no); |
| 1678 | } |
| 1679 | /* require */ |
| 1680 | else if (cx->blk_eval.old_namesv) { |
| 1681 | mPUSHs(newSVsv(cx->blk_eval.old_namesv)); |
| 1682 | PUSHs(&PL_sv_yes); |
| 1683 | } |
| 1684 | /* eval BLOCK (try blocks have old_namesv == 0) */ |
| 1685 | else { |
| 1686 | PUSHs(&PL_sv_undef); |
| 1687 | PUSHs(&PL_sv_undef); |
| 1688 | } |
| 1689 | } |
| 1690 | else { |
| 1691 | PUSHs(&PL_sv_undef); |
| 1692 | PUSHs(&PL_sv_undef); |
| 1693 | } |
| 1694 | if (CxTYPE(cx) == CXt_SUB && CxHASARGS(cx) |
| 1695 | && CopSTASH_eq(PL_curcop, PL_debstash)) |
| 1696 | { |
| 1697 | AV * const ary = cx->blk_sub.argarray; |
| 1698 | const int off = AvARRAY(ary) - AvALLOC(ary); |
| 1699 | |
| 1700 | if (!PL_dbargs) { |
| 1701 | GV* const tmpgv = gv_fetchpvs("DB::args", GV_ADD, SVt_PVAV); |
| 1702 | PL_dbargs = GvAV(gv_AVadd(tmpgv)); |
| 1703 | GvMULTI_on(tmpgv); |
| 1704 | AvREAL_off(PL_dbargs); /* XXX should be REIFY (see av.h) */ |
| 1705 | } |
| 1706 | |
| 1707 | if (AvMAX(PL_dbargs) < AvFILLp(ary) + off) |
| 1708 | av_extend(PL_dbargs, AvFILLp(ary) + off); |
| 1709 | Copy(AvALLOC(ary), AvARRAY(PL_dbargs), AvFILLp(ary) + 1 + off, SV*); |
| 1710 | AvFILLp(PL_dbargs) = AvFILLp(ary) + off; |
| 1711 | } |
| 1712 | /* XXX only hints propagated via op_private are currently |
| 1713 | * visible (others are not easily accessible, since they |
| 1714 | * use the global PL_hints) */ |
| 1715 | mPUSHi(CopHINTS_get(cx->blk_oldcop)); |
| 1716 | { |
| 1717 | SV * mask ; |
| 1718 | STRLEN * const old_warnings = cx->blk_oldcop->cop_warnings ; |
| 1719 | |
| 1720 | if (old_warnings == pWARN_NONE || |
| 1721 | (old_warnings == pWARN_STD && (PL_dowarn & G_WARN_ON) == 0)) |
| 1722 | mask = newSVpvn(WARN_NONEstring, WARNsize) ; |
| 1723 | else if (old_warnings == pWARN_ALL || |
| 1724 | (old_warnings == pWARN_STD && PL_dowarn & G_WARN_ON)) { |
| 1725 | /* Get the bit mask for $warnings::Bits{all}, because |
| 1726 | * it could have been extended by warnings::register */ |
| 1727 | SV **bits_all; |
| 1728 | HV * const bits = get_hv("warnings::Bits", FALSE); |
| 1729 | if (bits && (bits_all=hv_fetchs(bits, "all", FALSE))) { |
| 1730 | mask = newSVsv(*bits_all); |
| 1731 | } |
| 1732 | else { |
| 1733 | mask = newSVpvn(WARN_ALLstring, WARNsize) ; |
| 1734 | } |
| 1735 | } |
| 1736 | else |
| 1737 | mask = newSVpvn((char *) (old_warnings + 1), old_warnings[0]); |
| 1738 | mPUSHs(mask); |
| 1739 | } |
| 1740 | |
| 1741 | PUSHs(cx->blk_oldcop->cop_hints_hash ? |
| 1742 | sv_2mortal(newRV_noinc( |
| 1743 | (SV*)Perl_refcounted_he_chain_2hv(aTHX_ |
| 1744 | cx->blk_oldcop->cop_hints_hash))) |
| 1745 | : &PL_sv_undef); |
| 1746 | RETURN; |
| 1747 | } |
| 1748 | |
| 1749 | PP(pp_reset) |
| 1750 | { |
| 1751 | dVAR; |
| 1752 | dSP; |
| 1753 | const char * const tmps = (MAXARG < 1) ? (const char *)"" : POPpconstx; |
| 1754 | sv_reset(tmps, CopSTASH(PL_curcop)); |
| 1755 | PUSHs(&PL_sv_yes); |
| 1756 | RETURN; |
| 1757 | } |
| 1758 | |
| 1759 | /* like pp_nextstate, but used instead when the debugger is active */ |
| 1760 | |
| 1761 | PP(pp_dbstate) |
| 1762 | { |
| 1763 | dVAR; |
| 1764 | PL_curcop = (COP*)PL_op; |
| 1765 | TAINT_NOT; /* Each statement is presumed innocent */ |
| 1766 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
| 1767 | FREETMPS; |
| 1768 | |
| 1769 | if (PL_op->op_flags & OPf_SPECIAL /* breakpoint */ |
| 1770 | || SvIV(PL_DBsingle) || SvIV(PL_DBsignal) || SvIV(PL_DBtrace)) |
| 1771 | { |
| 1772 | dSP; |
| 1773 | register PERL_CONTEXT *cx; |
| 1774 | const I32 gimme = G_ARRAY; |
| 1775 | U8 hasargs; |
| 1776 | GV * const gv = PL_DBgv; |
| 1777 | register CV * const cv = GvCV(gv); |
| 1778 | |
| 1779 | if (!cv) |
| 1780 | DIE(aTHX_ "No DB::DB routine defined"); |
| 1781 | |
| 1782 | if (CvDEPTH(cv) >= 1 && !(PL_debug & DEBUG_DB_RECURSE_FLAG)) |
| 1783 | /* don't do recursive DB::DB call */ |
| 1784 | return NORMAL; |
| 1785 | |
| 1786 | ENTER; |
| 1787 | SAVETMPS; |
| 1788 | |
| 1789 | SAVEI32(PL_debug); |
| 1790 | SAVESTACK_POS(); |
| 1791 | PL_debug = 0; |
| 1792 | hasargs = 0; |
| 1793 | SPAGAIN; |
| 1794 | |
| 1795 | if (CvISXSUB(cv)) { |
| 1796 | CvDEPTH(cv)++; |
| 1797 | PUSHMARK(SP); |
| 1798 | (void)(*CvXSUB(cv))(aTHX_ cv); |
| 1799 | CvDEPTH(cv)--; |
| 1800 | FREETMPS; |
| 1801 | LEAVE; |
| 1802 | return NORMAL; |
| 1803 | } |
| 1804 | else { |
| 1805 | PUSHBLOCK(cx, CXt_SUB, SP); |
| 1806 | PUSHSUB_DB(cx); |
| 1807 | cx->blk_sub.retop = PL_op->op_next; |
| 1808 | CvDEPTH(cv)++; |
| 1809 | SAVECOMPPAD(); |
| 1810 | PAD_SET_CUR_NOSAVE(CvPADLIST(cv), 1); |
| 1811 | RETURNOP(CvSTART(cv)); |
| 1812 | } |
| 1813 | } |
| 1814 | else |
| 1815 | return NORMAL; |
| 1816 | } |
| 1817 | |
| 1818 | PP(pp_enteriter) |
| 1819 | { |
| 1820 | dVAR; dSP; dMARK; |
| 1821 | register PERL_CONTEXT *cx; |
| 1822 | const I32 gimme = GIMME_V; |
| 1823 | SV **svp; |
| 1824 | U16 cxtype = CXt_LOOP | CXp_FOREACH; |
| 1825 | #ifdef USE_ITHREADS |
| 1826 | void *iterdata; |
| 1827 | #endif |
| 1828 | |
| 1829 | ENTER; |
| 1830 | SAVETMPS; |
| 1831 | |
| 1832 | if (PL_op->op_targ) { |
| 1833 | if (PL_op->op_private & OPpLVAL_INTRO) { /* for my $x (...) */ |
| 1834 | SvPADSTALE_off(PAD_SVl(PL_op->op_targ)); |
| 1835 | SAVESETSVFLAGS(PAD_SVl(PL_op->op_targ), |
| 1836 | SVs_PADSTALE, SVs_PADSTALE); |
| 1837 | } |
| 1838 | #ifndef USE_ITHREADS |
| 1839 | svp = &PAD_SVl(PL_op->op_targ); /* "my" variable */ |
| 1840 | SAVESPTR(*svp); |
| 1841 | #else |
| 1842 | SAVEPADSV(PL_op->op_targ); |
| 1843 | iterdata = INT2PTR(void*, PL_op->op_targ); |
| 1844 | cxtype |= CXp_PADVAR; |
| 1845 | #endif |
| 1846 | } |
| 1847 | else { |
| 1848 | GV * const gv = (GV*)POPs; |
| 1849 | svp = &GvSV(gv); /* symbol table variable */ |
| 1850 | SAVEGENERICSV(*svp); |
| 1851 | *svp = newSV(0); |
| 1852 | #ifdef USE_ITHREADS |
| 1853 | iterdata = (void*)gv; |
| 1854 | #endif |
| 1855 | } |
| 1856 | |
| 1857 | if (PL_op->op_private & OPpITER_DEF) |
| 1858 | cxtype |= CXp_FOR_DEF; |
| 1859 | |
| 1860 | ENTER; |
| 1861 | |
| 1862 | PUSHBLOCK(cx, cxtype, SP); |
| 1863 | #ifdef USE_ITHREADS |
| 1864 | PUSHLOOP(cx, iterdata, MARK); |
| 1865 | #else |
| 1866 | PUSHLOOP(cx, svp, MARK); |
| 1867 | #endif |
| 1868 | if (PL_op->op_flags & OPf_STACKED) { |
| 1869 | cx->blk_loop.iterary = (AV*)SvREFCNT_inc(POPs); |
| 1870 | if (SvTYPE(cx->blk_loop.iterary) != SVt_PVAV) { |
| 1871 | dPOPss; |
| 1872 | SV * const right = (SV*)cx->blk_loop.iterary; |
| 1873 | SvGETMAGIC(sv); |
| 1874 | SvGETMAGIC(right); |
| 1875 | if (RANGE_IS_NUMERIC(sv,right)) { |
| 1876 | #ifdef NV_PRESERVES_UV |
| 1877 | if ((SvOK(sv) && ((SvNV(sv) < (NV)IV_MIN) || |
| 1878 | (SvNV(sv) > (NV)IV_MAX))) |
| 1879 | || |
| 1880 | (SvOK(right) && ((SvNV(right) > (NV)IV_MAX) || |
| 1881 | (SvNV(right) < (NV)IV_MIN)))) |
| 1882 | #else |
| 1883 | if ((SvOK(sv) && ((SvNV(sv) <= (NV)IV_MIN) |
| 1884 | || |
| 1885 | ((SvNV(sv) > 0) && |
| 1886 | ((SvUV(sv) > (UV)IV_MAX) || |
| 1887 | (SvNV(sv) > (NV)UV_MAX))))) |
| 1888 | || |
| 1889 | (SvOK(right) && ((SvNV(right) <= (NV)IV_MIN) |
| 1890 | || |
| 1891 | ((SvNV(right) > 0) && |
| 1892 | ((SvUV(right) > (UV)IV_MAX) || |
| 1893 | (SvNV(right) > (NV)UV_MAX)))))) |
| 1894 | #endif |
| 1895 | DIE(aTHX_ "Range iterator outside integer range"); |
| 1896 | cx->blk_loop.iterix = SvIV(sv); |
| 1897 | cx->blk_loop.itermax = SvIV(right); |
| 1898 | #ifdef DEBUGGING |
| 1899 | /* for correct -Dstv display */ |
| 1900 | cx->blk_oldsp = sp - PL_stack_base; |
| 1901 | #endif |
| 1902 | } |
| 1903 | else { |
| 1904 | cx->blk_loop.iterlval = newSVsv(sv); |
| 1905 | (void) SvPV_force_nolen(cx->blk_loop.iterlval); |
| 1906 | (void) SvPV_nolen_const(right); |
| 1907 | } |
| 1908 | } |
| 1909 | else if (PL_op->op_private & OPpITER_REVERSED) { |
| 1910 | cx->blk_loop.itermax = 0; |
| 1911 | cx->blk_loop.iterix = AvFILL(cx->blk_loop.iterary) + 1; |
| 1912 | |
| 1913 | } |
| 1914 | } |
| 1915 | else { |
| 1916 | cx->blk_loop.iterary = PL_curstack; |
| 1917 | AvFILLp(PL_curstack) = SP - PL_stack_base; |
| 1918 | if (PL_op->op_private & OPpITER_REVERSED) { |
| 1919 | cx->blk_loop.itermax = MARK - PL_stack_base + 1; |
| 1920 | cx->blk_loop.iterix = cx->blk_oldsp + 1; |
| 1921 | } |
| 1922 | else { |
| 1923 | cx->blk_loop.iterix = MARK - PL_stack_base; |
| 1924 | } |
| 1925 | } |
| 1926 | |
| 1927 | RETURN; |
| 1928 | } |
| 1929 | |
| 1930 | PP(pp_enterloop) |
| 1931 | { |
| 1932 | dVAR; dSP; |
| 1933 | register PERL_CONTEXT *cx; |
| 1934 | const I32 gimme = GIMME_V; |
| 1935 | |
| 1936 | ENTER; |
| 1937 | SAVETMPS; |
| 1938 | ENTER; |
| 1939 | |
| 1940 | PUSHBLOCK(cx, CXt_LOOP, SP); |
| 1941 | PUSHLOOP(cx, 0, SP); |
| 1942 | |
| 1943 | RETURN; |
| 1944 | } |
| 1945 | |
| 1946 | PP(pp_leaveloop) |
| 1947 | { |
| 1948 | dVAR; dSP; |
| 1949 | register PERL_CONTEXT *cx; |
| 1950 | I32 gimme; |
| 1951 | SV **newsp; |
| 1952 | PMOP *newpm; |
| 1953 | SV **mark; |
| 1954 | |
| 1955 | POPBLOCK(cx,newpm); |
| 1956 | assert(CxTYPE(cx) == CXt_LOOP); |
| 1957 | mark = newsp; |
| 1958 | newsp = PL_stack_base + cx->blk_loop.resetsp; |
| 1959 | |
| 1960 | TAINT_NOT; |
| 1961 | if (gimme == G_VOID) |
| 1962 | NOOP; |
| 1963 | else if (gimme == G_SCALAR) { |
| 1964 | if (mark < SP) |
| 1965 | *++newsp = sv_mortalcopy(*SP); |
| 1966 | else |
| 1967 | *++newsp = &PL_sv_undef; |
| 1968 | } |
| 1969 | else { |
| 1970 | while (mark < SP) { |
| 1971 | *++newsp = sv_mortalcopy(*++mark); |
| 1972 | TAINT_NOT; /* Each item is independent */ |
| 1973 | } |
| 1974 | } |
| 1975 | SP = newsp; |
| 1976 | PUTBACK; |
| 1977 | |
| 1978 | POPLOOP(cx); /* Stack values are safe: release loop vars ... */ |
| 1979 | PL_curpm = newpm; /* ... and pop $1 et al */ |
| 1980 | |
| 1981 | LEAVE; |
| 1982 | LEAVE; |
| 1983 | |
| 1984 | return NORMAL; |
| 1985 | } |
| 1986 | |
| 1987 | PP(pp_return) |
| 1988 | { |
| 1989 | dVAR; dSP; dMARK; |
| 1990 | register PERL_CONTEXT *cx; |
| 1991 | bool popsub2 = FALSE; |
| 1992 | bool clear_errsv = FALSE; |
| 1993 | I32 gimme; |
| 1994 | SV **newsp; |
| 1995 | PMOP *newpm; |
| 1996 | I32 optype = 0; |
| 1997 | SV *sv; |
| 1998 | OP *retop; |
| 1999 | |
| 2000 | const I32 cxix = dopoptosub(cxstack_ix); |
| 2001 | |
| 2002 | if (cxix < 0) { |
| 2003 | if (CxMULTICALL(cxstack)) { /* In this case we must be in a |
| 2004 | * sort block, which is a CXt_NULL |
| 2005 | * not a CXt_SUB */ |
| 2006 | dounwind(0); |
| 2007 | PL_stack_base[1] = *PL_stack_sp; |
| 2008 | PL_stack_sp = PL_stack_base + 1; |
| 2009 | return 0; |
| 2010 | } |
| 2011 | else |
| 2012 | DIE(aTHX_ "Can't return outside a subroutine"); |
| 2013 | } |
| 2014 | if (cxix < cxstack_ix) |
| 2015 | dounwind(cxix); |
| 2016 | |
| 2017 | if (CxMULTICALL(&cxstack[cxix])) { |
| 2018 | gimme = cxstack[cxix].blk_gimme; |
| 2019 | if (gimme == G_VOID) |
| 2020 | PL_stack_sp = PL_stack_base; |
| 2021 | else if (gimme == G_SCALAR) { |
| 2022 | PL_stack_base[1] = *PL_stack_sp; |
| 2023 | PL_stack_sp = PL_stack_base + 1; |
| 2024 | } |
| 2025 | return 0; |
| 2026 | } |
| 2027 | |
| 2028 | POPBLOCK(cx,newpm); |
| 2029 | switch (CxTYPE(cx)) { |
| 2030 | case CXt_SUB: |
| 2031 | popsub2 = TRUE; |
| 2032 | retop = cx->blk_sub.retop; |
| 2033 | cxstack_ix++; /* preserve cx entry on stack for use by POPSUB */ |
| 2034 | break; |
| 2035 | case CXt_EVAL: |
| 2036 | if (!(PL_in_eval & EVAL_KEEPERR)) |
| 2037 | clear_errsv = TRUE; |
| 2038 | POPEVAL(cx); |
| 2039 | retop = cx->blk_eval.retop; |
| 2040 | if (CxTRYBLOCK(cx)) |
| 2041 | break; |
| 2042 | lex_end(); |
| 2043 | if (optype == OP_REQUIRE && |
| 2044 | (MARK == SP || (gimme == G_SCALAR && !SvTRUE(*SP))) ) |
| 2045 | { |
| 2046 | /* Unassume the success we assumed earlier. */ |
| 2047 | SV * const nsv = cx->blk_eval.old_namesv; |
| 2048 | (void)hv_delete(GvHVn(PL_incgv), SvPVX_const(nsv), SvCUR(nsv), G_DISCARD); |
| 2049 | DIE(aTHX_ "%"SVf" did not return a true value", SVfARG(nsv)); |
| 2050 | } |
| 2051 | break; |
| 2052 | case CXt_FORMAT: |
| 2053 | POPFORMAT(cx); |
| 2054 | retop = cx->blk_sub.retop; |
| 2055 | break; |
| 2056 | default: |
| 2057 | DIE(aTHX_ "panic: return"); |
| 2058 | } |
| 2059 | |
| 2060 | TAINT_NOT; |
| 2061 | if (gimme == G_SCALAR) { |
| 2062 | if (MARK < SP) { |
| 2063 | if (popsub2) { |
| 2064 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
| 2065 | if (SvTEMP(TOPs)) { |
| 2066 | *++newsp = SvREFCNT_inc(*SP); |
| 2067 | FREETMPS; |
| 2068 | sv_2mortal(*newsp); |
| 2069 | } |
| 2070 | else { |
| 2071 | sv = SvREFCNT_inc(*SP); /* FREETMPS could clobber it */ |
| 2072 | FREETMPS; |
| 2073 | *++newsp = sv_mortalcopy(sv); |
| 2074 | SvREFCNT_dec(sv); |
| 2075 | } |
| 2076 | } |
| 2077 | else |
| 2078 | *++newsp = (SvTEMP(*SP)) ? *SP : sv_mortalcopy(*SP); |
| 2079 | } |
| 2080 | else |
| 2081 | *++newsp = sv_mortalcopy(*SP); |
| 2082 | } |
| 2083 | else |
| 2084 | *++newsp = &PL_sv_undef; |
| 2085 | } |
| 2086 | else if (gimme == G_ARRAY) { |
| 2087 | while (++MARK <= SP) { |
| 2088 | *++newsp = (popsub2 && SvTEMP(*MARK)) |
| 2089 | ? *MARK : sv_mortalcopy(*MARK); |
| 2090 | TAINT_NOT; /* Each item is independent */ |
| 2091 | } |
| 2092 | } |
| 2093 | PL_stack_sp = newsp; |
| 2094 | |
| 2095 | LEAVE; |
| 2096 | /* Stack values are safe: */ |
| 2097 | if (popsub2) { |
| 2098 | cxstack_ix--; |
| 2099 | POPSUB(cx,sv); /* release CV and @_ ... */ |
| 2100 | } |
| 2101 | else |
| 2102 | sv = NULL; |
| 2103 | PL_curpm = newpm; /* ... and pop $1 et al */ |
| 2104 | |
| 2105 | LEAVESUB(sv); |
| 2106 | if (clear_errsv) |
| 2107 | sv_setpvn(ERRSV,"",0); |
| 2108 | return retop; |
| 2109 | } |
| 2110 | |
| 2111 | PP(pp_last) |
| 2112 | { |
| 2113 | dVAR; dSP; |
| 2114 | I32 cxix; |
| 2115 | register PERL_CONTEXT *cx; |
| 2116 | I32 pop2 = 0; |
| 2117 | I32 gimme; |
| 2118 | I32 optype; |
| 2119 | OP *nextop; |
| 2120 | SV **newsp; |
| 2121 | PMOP *newpm; |
| 2122 | SV **mark; |
| 2123 | SV *sv = NULL; |
| 2124 | |
| 2125 | |
| 2126 | if (PL_op->op_flags & OPf_SPECIAL) { |
| 2127 | cxix = dopoptoloop(cxstack_ix); |
| 2128 | if (cxix < 0) |
| 2129 | DIE(aTHX_ "Can't \"last\" outside a loop block"); |
| 2130 | } |
| 2131 | else { |
| 2132 | cxix = dopoptolabel(cPVOP->op_pv); |
| 2133 | if (cxix < 0) |
| 2134 | DIE(aTHX_ "Label not found for \"last %s\"", cPVOP->op_pv); |
| 2135 | } |
| 2136 | if (cxix < cxstack_ix) |
| 2137 | dounwind(cxix); |
| 2138 | |
| 2139 | POPBLOCK(cx,newpm); |
| 2140 | cxstack_ix++; /* temporarily protect top context */ |
| 2141 | mark = newsp; |
| 2142 | switch (CxTYPE(cx)) { |
| 2143 | case CXt_LOOP: |
| 2144 | pop2 = CXt_LOOP; |
| 2145 | newsp = PL_stack_base + cx->blk_loop.resetsp; |
| 2146 | nextop = cx->blk_loop.my_op->op_lastop->op_next; |
| 2147 | break; |
| 2148 | case CXt_SUB: |
| 2149 | pop2 = CXt_SUB; |
| 2150 | nextop = cx->blk_sub.retop; |
| 2151 | break; |
| 2152 | case CXt_EVAL: |
| 2153 | POPEVAL(cx); |
| 2154 | nextop = cx->blk_eval.retop; |
| 2155 | break; |
| 2156 | case CXt_FORMAT: |
| 2157 | POPFORMAT(cx); |
| 2158 | nextop = cx->blk_sub.retop; |
| 2159 | break; |
| 2160 | default: |
| 2161 | DIE(aTHX_ "panic: last"); |
| 2162 | } |
| 2163 | |
| 2164 | TAINT_NOT; |
| 2165 | if (gimme == G_SCALAR) { |
| 2166 | if (MARK < SP) |
| 2167 | *++newsp = ((pop2 == CXt_SUB) && SvTEMP(*SP)) |
| 2168 | ? *SP : sv_mortalcopy(*SP); |
| 2169 | else |
| 2170 | *++newsp = &PL_sv_undef; |
| 2171 | } |
| 2172 | else if (gimme == G_ARRAY) { |
| 2173 | while (++MARK <= SP) { |
| 2174 | *++newsp = ((pop2 == CXt_SUB) && SvTEMP(*MARK)) |
| 2175 | ? *MARK : sv_mortalcopy(*MARK); |
| 2176 | TAINT_NOT; /* Each item is independent */ |
| 2177 | } |
| 2178 | } |
| 2179 | SP = newsp; |
| 2180 | PUTBACK; |
| 2181 | |
| 2182 | LEAVE; |
| 2183 | cxstack_ix--; |
| 2184 | /* Stack values are safe: */ |
| 2185 | switch (pop2) { |
| 2186 | case CXt_LOOP: |
| 2187 | POPLOOP(cx); /* release loop vars ... */ |
| 2188 | LEAVE; |
| 2189 | break; |
| 2190 | case CXt_SUB: |
| 2191 | POPSUB(cx,sv); /* release CV and @_ ... */ |
| 2192 | break; |
| 2193 | } |
| 2194 | PL_curpm = newpm; /* ... and pop $1 et al */ |
| 2195 | |
| 2196 | LEAVESUB(sv); |
| 2197 | PERL_UNUSED_VAR(optype); |
| 2198 | PERL_UNUSED_VAR(gimme); |
| 2199 | return nextop; |
| 2200 | } |
| 2201 | |
| 2202 | PP(pp_next) |
| 2203 | { |
| 2204 | dVAR; |
| 2205 | I32 cxix; |
| 2206 | register PERL_CONTEXT *cx; |
| 2207 | I32 inner; |
| 2208 | |
| 2209 | if (PL_op->op_flags & OPf_SPECIAL) { |
| 2210 | cxix = dopoptoloop(cxstack_ix); |
| 2211 | if (cxix < 0) |
| 2212 | DIE(aTHX_ "Can't \"next\" outside a loop block"); |
| 2213 | } |
| 2214 | else { |
| 2215 | cxix = dopoptolabel(cPVOP->op_pv); |
| 2216 | if (cxix < 0) |
| 2217 | DIE(aTHX_ "Label not found for \"next %s\"", cPVOP->op_pv); |
| 2218 | } |
| 2219 | if (cxix < cxstack_ix) |
| 2220 | dounwind(cxix); |
| 2221 | |
| 2222 | /* clear off anything above the scope we're re-entering, but |
| 2223 | * save the rest until after a possible continue block */ |
| 2224 | inner = PL_scopestack_ix; |
| 2225 | TOPBLOCK(cx); |
| 2226 | if (PL_scopestack_ix < inner) |
| 2227 | leave_scope(PL_scopestack[PL_scopestack_ix]); |
| 2228 | PL_curcop = cx->blk_oldcop; |
| 2229 | return CX_LOOP_NEXTOP_GET(cx); |
| 2230 | } |
| 2231 | |
| 2232 | PP(pp_redo) |
| 2233 | { |
| 2234 | dVAR; |
| 2235 | I32 cxix; |
| 2236 | register PERL_CONTEXT *cx; |
| 2237 | I32 oldsave; |
| 2238 | OP* redo_op; |
| 2239 | |
| 2240 | if (PL_op->op_flags & OPf_SPECIAL) { |
| 2241 | cxix = dopoptoloop(cxstack_ix); |
| 2242 | if (cxix < 0) |
| 2243 | DIE(aTHX_ "Can't \"redo\" outside a loop block"); |
| 2244 | } |
| 2245 | else { |
| 2246 | cxix = dopoptolabel(cPVOP->op_pv); |
| 2247 | if (cxix < 0) |
| 2248 | DIE(aTHX_ "Label not found for \"redo %s\"", cPVOP->op_pv); |
| 2249 | } |
| 2250 | if (cxix < cxstack_ix) |
| 2251 | dounwind(cxix); |
| 2252 | |
| 2253 | redo_op = cxstack[cxix].blk_loop.my_op->op_redoop; |
| 2254 | if (redo_op->op_type == OP_ENTER) { |
| 2255 | /* pop one less context to avoid $x being freed in while (my $x..) */ |
| 2256 | cxstack_ix++; |
| 2257 | assert(CxTYPE(&cxstack[cxstack_ix]) == CXt_BLOCK); |
| 2258 | redo_op = redo_op->op_next; |
| 2259 | } |
| 2260 | |
| 2261 | TOPBLOCK(cx); |
| 2262 | oldsave = PL_scopestack[PL_scopestack_ix - 1]; |
| 2263 | LEAVE_SCOPE(oldsave); |
| 2264 | FREETMPS; |
| 2265 | PL_curcop = cx->blk_oldcop; |
| 2266 | return redo_op; |
| 2267 | } |
| 2268 | |
| 2269 | STATIC OP * |
| 2270 | S_dofindlabel(pTHX_ OP *o, const char *label, OP **opstack, OP **oplimit) |
| 2271 | { |
| 2272 | dVAR; |
| 2273 | OP **ops = opstack; |
| 2274 | static const char too_deep[] = "Target of goto is too deeply nested"; |
| 2275 | |
| 2276 | if (ops >= oplimit) |
| 2277 | Perl_croak(aTHX_ too_deep); |
| 2278 | if (o->op_type == OP_LEAVE || |
| 2279 | o->op_type == OP_SCOPE || |
| 2280 | o->op_type == OP_LEAVELOOP || |
| 2281 | o->op_type == OP_LEAVESUB || |
| 2282 | o->op_type == OP_LEAVETRY) |
| 2283 | { |
| 2284 | *ops++ = cUNOPo->op_first; |
| 2285 | if (ops >= oplimit) |
| 2286 | Perl_croak(aTHX_ too_deep); |
| 2287 | } |
| 2288 | *ops = 0; |
| 2289 | if (o->op_flags & OPf_KIDS) { |
| 2290 | OP *kid; |
| 2291 | /* First try all the kids at this level, since that's likeliest. */ |
| 2292 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) { |
| 2293 | if ((kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) && |
| 2294 | kCOP->cop_label && strEQ(kCOP->cop_label, label)) |
| 2295 | return kid; |
| 2296 | } |
| 2297 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) { |
| 2298 | if (kid == PL_lastgotoprobe) |
| 2299 | continue; |
| 2300 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) { |
| 2301 | if (ops == opstack) |
| 2302 | *ops++ = kid; |
| 2303 | else if (ops[-1]->op_type == OP_NEXTSTATE || |
| 2304 | ops[-1]->op_type == OP_DBSTATE) |
| 2305 | ops[-1] = kid; |
| 2306 | else |
| 2307 | *ops++ = kid; |
| 2308 | } |
| 2309 | if ((o = dofindlabel(kid, label, ops, oplimit))) |
| 2310 | return o; |
| 2311 | } |
| 2312 | } |
| 2313 | *ops = 0; |
| 2314 | return 0; |
| 2315 | } |
| 2316 | |
| 2317 | PP(pp_goto) |
| 2318 | { |
| 2319 | dVAR; dSP; |
| 2320 | OP *retop = NULL; |
| 2321 | I32 ix; |
| 2322 | register PERL_CONTEXT *cx; |
| 2323 | #define GOTO_DEPTH 64 |
| 2324 | OP *enterops[GOTO_DEPTH]; |
| 2325 | const char *label = NULL; |
| 2326 | const bool do_dump = (PL_op->op_type == OP_DUMP); |
| 2327 | static const char must_have_label[] = "goto must have label"; |
| 2328 | |
| 2329 | if (PL_op->op_flags & OPf_STACKED) { |
| 2330 | SV * const sv = POPs; |
| 2331 | |
| 2332 | /* This egregious kludge implements goto &subroutine */ |
| 2333 | if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVCV) { |
| 2334 | I32 cxix; |
| 2335 | register PERL_CONTEXT *cx; |
| 2336 | CV* cv = (CV*)SvRV(sv); |
| 2337 | SV** mark; |
| 2338 | I32 items = 0; |
| 2339 | I32 oldsave; |
| 2340 | bool reified = 0; |
| 2341 | |
| 2342 | retry: |
| 2343 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
| 2344 | const GV * const gv = CvGV(cv); |
| 2345 | if (gv) { |
| 2346 | GV *autogv; |
| 2347 | SV *tmpstr; |
| 2348 | /* autoloaded stub? */ |
| 2349 | if (cv != GvCV(gv) && (cv = GvCV(gv))) |
| 2350 | goto retry; |
| 2351 | autogv = gv_autoload4(GvSTASH(gv), GvNAME(gv), |
| 2352 | GvNAMELEN(gv), FALSE); |
| 2353 | if (autogv && (cv = GvCV(autogv))) |
| 2354 | goto retry; |
| 2355 | tmpstr = sv_newmortal(); |
| 2356 | gv_efullname3(tmpstr, gv, NULL); |
| 2357 | DIE(aTHX_ "Goto undefined subroutine &%"SVf"", SVfARG(tmpstr)); |
| 2358 | } |
| 2359 | DIE(aTHX_ "Goto undefined subroutine"); |
| 2360 | } |
| 2361 | |
| 2362 | /* First do some returnish stuff. */ |
| 2363 | SvREFCNT_inc_simple_void(cv); /* avoid premature free during unwind */ |
| 2364 | FREETMPS; |
| 2365 | cxix = dopoptosub(cxstack_ix); |
| 2366 | if (cxix < 0) |
| 2367 | DIE(aTHX_ "Can't goto subroutine outside a subroutine"); |
| 2368 | if (cxix < cxstack_ix) |
| 2369 | dounwind(cxix); |
| 2370 | TOPBLOCK(cx); |
| 2371 | SPAGAIN; |
| 2372 | /* ban goto in eval: see <20050521150056.GC20213@iabyn.com> */ |
| 2373 | if (CxTYPE(cx) == CXt_EVAL) { |
| 2374 | if (CxREALEVAL(cx)) |
| 2375 | DIE(aTHX_ "Can't goto subroutine from an eval-string"); |
| 2376 | else |
| 2377 | DIE(aTHX_ "Can't goto subroutine from an eval-block"); |
| 2378 | } |
| 2379 | else if (CxMULTICALL(cx)) |
| 2380 | DIE(aTHX_ "Can't goto subroutine from a sort sub (or similar callback)"); |
| 2381 | if (CxTYPE(cx) == CXt_SUB && CxHASARGS(cx)) { |
| 2382 | /* put @_ back onto stack */ |
| 2383 | AV* av = cx->blk_sub.argarray; |
| 2384 | |
| 2385 | items = AvFILLp(av) + 1; |
| 2386 | EXTEND(SP, items+1); /* @_ could have been extended. */ |
| 2387 | Copy(AvARRAY(av), SP + 1, items, SV*); |
| 2388 | SvREFCNT_dec(GvAV(PL_defgv)); |
| 2389 | GvAV(PL_defgv) = cx->blk_sub.savearray; |
| 2390 | CLEAR_ARGARRAY(av); |
| 2391 | /* abandon @_ if it got reified */ |
| 2392 | if (AvREAL(av)) { |
| 2393 | reified = 1; |
| 2394 | SvREFCNT_dec(av); |
| 2395 | av = newAV(); |
| 2396 | av_extend(av, items-1); |
| 2397 | AvREIFY_only(av); |
| 2398 | PAD_SVl(0) = (SV*)(cx->blk_sub.argarray = av); |
| 2399 | } |
| 2400 | } |
| 2401 | else if (CvISXSUB(cv)) { /* put GvAV(defgv) back onto stack */ |
| 2402 | AV* const av = GvAV(PL_defgv); |
| 2403 | items = AvFILLp(av) + 1; |
| 2404 | EXTEND(SP, items+1); /* @_ could have been extended. */ |
| 2405 | Copy(AvARRAY(av), SP + 1, items, SV*); |
| 2406 | } |
| 2407 | mark = SP; |
| 2408 | SP += items; |
| 2409 | if (CxTYPE(cx) == CXt_SUB && |
| 2410 | !(CvDEPTH(cx->blk_sub.cv) = cx->blk_sub.olddepth)) |
| 2411 | SvREFCNT_dec(cx->blk_sub.cv); |
| 2412 | oldsave = PL_scopestack[PL_scopestack_ix - 1]; |
| 2413 | LEAVE_SCOPE(oldsave); |
| 2414 | |
| 2415 | /* Now do some callish stuff. */ |
| 2416 | SAVETMPS; |
| 2417 | SAVEFREESV(cv); /* later, undo the 'avoid premature free' hack */ |
| 2418 | if (CvISXSUB(cv)) { |
| 2419 | OP* const retop = cx->blk_sub.retop; |
| 2420 | SV **newsp; |
| 2421 | I32 gimme; |
| 2422 | if (reified) { |
| 2423 | I32 index; |
| 2424 | for (index=0; index<items; index++) |
| 2425 | sv_2mortal(SP[-index]); |
| 2426 | } |
| 2427 | |
| 2428 | /* XS subs don't have a CxSUB, so pop it */ |
| 2429 | POPBLOCK(cx, PL_curpm); |
| 2430 | /* Push a mark for the start of arglist */ |
| 2431 | PUSHMARK(mark); |
| 2432 | PUTBACK; |
| 2433 | (void)(*CvXSUB(cv))(aTHX_ cv); |
| 2434 | LEAVE; |
| 2435 | return retop; |
| 2436 | } |
| 2437 | else { |
| 2438 | AV* const padlist = CvPADLIST(cv); |
| 2439 | if (CxTYPE(cx) == CXt_EVAL) { |
| 2440 | PL_in_eval = cx->blk_eval.old_in_eval; |
| 2441 | PL_eval_root = cx->blk_eval.old_eval_root; |
| 2442 | cx->cx_type = CXt_SUB; |
| 2443 | } |
| 2444 | cx->blk_sub.cv = cv; |
| 2445 | cx->blk_sub.olddepth = CvDEPTH(cv); |
| 2446 | |
| 2447 | CvDEPTH(cv)++; |
| 2448 | if (CvDEPTH(cv) < 2) |
| 2449 | SvREFCNT_inc_simple_void_NN(cv); |
| 2450 | else { |
| 2451 | if (CvDEPTH(cv) == PERL_SUB_DEPTH_WARN && ckWARN(WARN_RECURSION)) |
| 2452 | sub_crush_depth(cv); |
| 2453 | pad_push(padlist, CvDEPTH(cv)); |
| 2454 | } |
| 2455 | SAVECOMPPAD(); |
| 2456 | PAD_SET_CUR_NOSAVE(padlist, CvDEPTH(cv)); |
| 2457 | if (CxHASARGS(cx)) |
| 2458 | { |
| 2459 | AV* const av = (AV*)PAD_SVl(0); |
| 2460 | |
| 2461 | cx->blk_sub.savearray = GvAV(PL_defgv); |
| 2462 | GvAV(PL_defgv) = (AV*)SvREFCNT_inc_simple(av); |
| 2463 | CX_CURPAD_SAVE(cx->blk_sub); |
| 2464 | cx->blk_sub.argarray = av; |
| 2465 | |
| 2466 | if (items >= AvMAX(av) + 1) { |
| 2467 | SV **ary = AvALLOC(av); |
| 2468 | if (AvARRAY(av) != ary) { |
| 2469 | AvMAX(av) += AvARRAY(av) - AvALLOC(av); |
| 2470 | AvARRAY(av) = ary; |
| 2471 | } |
| 2472 | if (items >= AvMAX(av) + 1) { |
| 2473 | AvMAX(av) = items - 1; |
| 2474 | Renew(ary,items+1,SV*); |
| 2475 | AvALLOC(av) = ary; |
| 2476 | AvARRAY(av) = ary; |
| 2477 | } |
| 2478 | } |
| 2479 | ++mark; |
| 2480 | Copy(mark,AvARRAY(av),items,SV*); |
| 2481 | AvFILLp(av) = items - 1; |
| 2482 | assert(!AvREAL(av)); |
| 2483 | if (reified) { |
| 2484 | /* transfer 'ownership' of refcnts to new @_ */ |
| 2485 | AvREAL_on(av); |
| 2486 | AvREIFY_off(av); |
| 2487 | } |
| 2488 | while (items--) { |
| 2489 | if (*mark) |
| 2490 | SvTEMP_off(*mark); |
| 2491 | mark++; |
| 2492 | } |
| 2493 | } |
| 2494 | if (PERLDB_SUB) { /* Checking curstash breaks DProf. */ |
| 2495 | Perl_get_db_sub(aTHX_ NULL, cv); |
| 2496 | if (PERLDB_GOTO) { |
| 2497 | CV * const gotocv = get_cv("DB::goto", FALSE); |
| 2498 | if (gotocv) { |
| 2499 | PUSHMARK( PL_stack_sp ); |
| 2500 | call_sv((SV*)gotocv, G_SCALAR | G_NODEBUG); |
| 2501 | PL_stack_sp--; |
| 2502 | } |
| 2503 | } |
| 2504 | } |
| 2505 | RETURNOP(CvSTART(cv)); |
| 2506 | } |
| 2507 | } |
| 2508 | else { |
| 2509 | label = SvPV_nolen_const(sv); |
| 2510 | if (!(do_dump || *label)) |
| 2511 | DIE(aTHX_ must_have_label); |
| 2512 | } |
| 2513 | } |
| 2514 | else if (PL_op->op_flags & OPf_SPECIAL) { |
| 2515 | if (! do_dump) |
| 2516 | DIE(aTHX_ must_have_label); |
| 2517 | } |
| 2518 | else |
| 2519 | label = cPVOP->op_pv; |
| 2520 | |
| 2521 | if (label && *label) { |
| 2522 | OP *gotoprobe = NULL; |
| 2523 | bool leaving_eval = FALSE; |
| 2524 | bool in_block = FALSE; |
| 2525 | PERL_CONTEXT *last_eval_cx = NULL; |
| 2526 | |
| 2527 | /* find label */ |
| 2528 | |
| 2529 | PL_lastgotoprobe = NULL; |
| 2530 | *enterops = 0; |
| 2531 | for (ix = cxstack_ix; ix >= 0; ix--) { |
| 2532 | cx = &cxstack[ix]; |
| 2533 | switch (CxTYPE(cx)) { |
| 2534 | case CXt_EVAL: |
| 2535 | leaving_eval = TRUE; |
| 2536 | if (!CxTRYBLOCK(cx)) { |
| 2537 | gotoprobe = (last_eval_cx ? |
| 2538 | last_eval_cx->blk_eval.old_eval_root : |
| 2539 | PL_eval_root); |
| 2540 | last_eval_cx = cx; |
| 2541 | break; |
| 2542 | } |
| 2543 | /* else fall through */ |
| 2544 | case CXt_LOOP: |
| 2545 | gotoprobe = cx->blk_oldcop->op_sibling; |
| 2546 | break; |
| 2547 | case CXt_SUBST: |
| 2548 | continue; |
| 2549 | case CXt_BLOCK: |
| 2550 | if (ix) { |
| 2551 | gotoprobe = cx->blk_oldcop->op_sibling; |
| 2552 | in_block = TRUE; |
| 2553 | } else |
| 2554 | gotoprobe = PL_main_root; |
| 2555 | break; |
| 2556 | case CXt_SUB: |
| 2557 | if (CvDEPTH(cx->blk_sub.cv) && !CxMULTICALL(cx)) { |
| 2558 | gotoprobe = CvROOT(cx->blk_sub.cv); |
| 2559 | break; |
| 2560 | } |
| 2561 | /* FALL THROUGH */ |
| 2562 | case CXt_FORMAT: |
| 2563 | case CXt_NULL: |
| 2564 | DIE(aTHX_ "Can't \"goto\" out of a pseudo block"); |
| 2565 | default: |
| 2566 | if (ix) |
| 2567 | DIE(aTHX_ "panic: goto"); |
| 2568 | gotoprobe = PL_main_root; |
| 2569 | break; |
| 2570 | } |
| 2571 | if (gotoprobe) { |
| 2572 | retop = dofindlabel(gotoprobe, label, |
| 2573 | enterops, enterops + GOTO_DEPTH); |
| 2574 | if (retop) |
| 2575 | break; |
| 2576 | } |
| 2577 | PL_lastgotoprobe = gotoprobe; |
| 2578 | } |
| 2579 | if (!retop) |
| 2580 | DIE(aTHX_ "Can't find label %s", label); |
| 2581 | |
| 2582 | /* if we're leaving an eval, check before we pop any frames |
| 2583 | that we're not going to punt, otherwise the error |
| 2584 | won't be caught */ |
| 2585 | |
| 2586 | if (leaving_eval && *enterops && enterops[1]) { |
| 2587 | I32 i; |
| 2588 | for (i = 1; enterops[i]; i++) |
| 2589 | if (enterops[i]->op_type == OP_ENTERITER) |
| 2590 | DIE(aTHX_ "Can't \"goto\" into the middle of a foreach loop"); |
| 2591 | } |
| 2592 | |
| 2593 | /* pop unwanted frames */ |
| 2594 | |
| 2595 | if (ix < cxstack_ix) { |
| 2596 | I32 oldsave; |
| 2597 | |
| 2598 | if (ix < 0) |
| 2599 | ix = 0; |
| 2600 | dounwind(ix); |
| 2601 | TOPBLOCK(cx); |
| 2602 | oldsave = PL_scopestack[PL_scopestack_ix]; |
| 2603 | LEAVE_SCOPE(oldsave); |
| 2604 | } |
| 2605 | |
| 2606 | /* push wanted frames */ |
| 2607 | |
| 2608 | if (*enterops && enterops[1]) { |
| 2609 | OP * const oldop = PL_op; |
| 2610 | ix = enterops[1]->op_type == OP_ENTER && in_block ? 2 : 1; |
| 2611 | for (; enterops[ix]; ix++) { |
| 2612 | PL_op = enterops[ix]; |
| 2613 | /* Eventually we may want to stack the needed arguments |
| 2614 | * for each op. For now, we punt on the hard ones. */ |
| 2615 | if (PL_op->op_type == OP_ENTERITER) |
| 2616 | DIE(aTHX_ "Can't \"goto\" into the middle of a foreach loop"); |
| 2617 | CALL_FPTR(PL_op->op_ppaddr)(aTHX); |
| 2618 | } |
| 2619 | PL_op = oldop; |
| 2620 | } |
| 2621 | } |
| 2622 | |
| 2623 | if (do_dump) { |
| 2624 | #ifdef VMS |
| 2625 | if (!retop) retop = PL_main_start; |
| 2626 | #endif |
| 2627 | PL_restartop = retop; |
| 2628 | PL_do_undump = TRUE; |
| 2629 | |
| 2630 | my_unexec(); |
| 2631 | |
| 2632 | PL_restartop = 0; /* hmm, must be GNU unexec().. */ |
| 2633 | PL_do_undump = FALSE; |
| 2634 | } |
| 2635 | |
| 2636 | RETURNOP(retop); |
| 2637 | } |
| 2638 | |
| 2639 | PP(pp_exit) |
| 2640 | { |
| 2641 | dVAR; |
| 2642 | dSP; |
| 2643 | I32 anum; |
| 2644 | |
| 2645 | if (MAXARG < 1) |
| 2646 | anum = 0; |
| 2647 | else { |
| 2648 | anum = SvIVx(POPs); |
| 2649 | #ifdef VMS |
| 2650 | if (anum == 1 && (PL_op->op_private & OPpEXIT_VMSISH)) |
| 2651 | anum = 0; |
| 2652 | VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH); |
| 2653 | #endif |
| 2654 | } |
| 2655 | PL_exit_flags |= PERL_EXIT_EXPECTED; |
| 2656 | #ifdef PERL_MAD |
| 2657 | /* KLUDGE: disable exit 0 in BEGIN blocks when we're just compiling */ |
| 2658 | if (anum || !(PL_minus_c && PL_madskills)) |
| 2659 | my_exit(anum); |
| 2660 | #else |
| 2661 | my_exit(anum); |
| 2662 | #endif |
| 2663 | PUSHs(&PL_sv_undef); |
| 2664 | RETURN; |
| 2665 | } |
| 2666 | |
| 2667 | /* Eval. */ |
| 2668 | |
| 2669 | STATIC void |
| 2670 | S_save_lines(pTHX_ AV *array, SV *sv) |
| 2671 | { |
| 2672 | const char *s = SvPVX_const(sv); |
| 2673 | const char * const send = SvPVX_const(sv) + SvCUR(sv); |
| 2674 | I32 line = 1; |
| 2675 | |
| 2676 | while (s && s < send) { |
| 2677 | const char *t; |
| 2678 | SV * const tmpstr = newSV_type(SVt_PVMG); |
| 2679 | |
| 2680 | t = strchr(s, '\n'); |
| 2681 | if (t) |
| 2682 | t++; |
| 2683 | else |
| 2684 | t = send; |
| 2685 | |
| 2686 | sv_setpvn(tmpstr, s, t - s); |
| 2687 | av_store(array, line++, tmpstr); |
| 2688 | s = t; |
| 2689 | } |
| 2690 | } |
| 2691 | |
| 2692 | STATIC OP * |
| 2693 | S_docatch(pTHX_ OP *o) |
| 2694 | { |
| 2695 | dVAR; |
| 2696 | int ret; |
| 2697 | OP * const oldop = PL_op; |
| 2698 | dJMPENV; |
| 2699 | |
| 2700 | #ifdef DEBUGGING |
| 2701 | assert(CATCH_GET == TRUE); |
| 2702 | #endif |
| 2703 | PL_op = o; |
| 2704 | |
| 2705 | JMPENV_PUSH(ret); |
| 2706 | switch (ret) { |
| 2707 | case 0: |
| 2708 | assert(cxstack_ix >= 0); |
| 2709 | assert(CxTYPE(&cxstack[cxstack_ix]) == CXt_EVAL); |
| 2710 | cxstack[cxstack_ix].blk_eval.cur_top_env = PL_top_env; |
| 2711 | redo_body: |
| 2712 | CALLRUNOPS(aTHX); |
| 2713 | break; |
| 2714 | case 3: |
| 2715 | /* die caught by an inner eval - continue inner loop */ |
| 2716 | |
| 2717 | /* NB XXX we rely on the old popped CxEVAL still being at the top |
| 2718 | * of the stack; the way die_where() currently works, this |
| 2719 | * assumption is valid. In theory The cur_top_env value should be |
| 2720 | * returned in another global, the way retop (aka PL_restartop) |
| 2721 | * is. */ |
| 2722 | assert(CxTYPE(&cxstack[cxstack_ix+1]) == CXt_EVAL); |
| 2723 | |
| 2724 | if (PL_restartop |
| 2725 | && cxstack[cxstack_ix+1].blk_eval.cur_top_env == PL_top_env) |
| 2726 | { |
| 2727 | PL_op = PL_restartop; |
| 2728 | PL_restartop = 0; |
| 2729 | goto redo_body; |
| 2730 | } |
| 2731 | /* FALL THROUGH */ |
| 2732 | default: |
| 2733 | JMPENV_POP; |
| 2734 | PL_op = oldop; |
| 2735 | JMPENV_JUMP(ret); |
| 2736 | /* NOTREACHED */ |
| 2737 | } |
| 2738 | JMPENV_POP; |
| 2739 | PL_op = oldop; |
| 2740 | return NULL; |
| 2741 | } |
| 2742 | |
| 2743 | OP * |
| 2744 | Perl_sv_compile_2op(pTHX_ SV *sv, OP** startop, const char *code, PAD** padp) |
| 2745 | /* sv Text to convert to OP tree. */ |
| 2746 | /* startop op_free() this to undo. */ |
| 2747 | /* code Short string id of the caller. */ |
| 2748 | { |
| 2749 | /* FIXME - how much of this code is common with pp_entereval? */ |
| 2750 | dVAR; dSP; /* Make POPBLOCK work. */ |
| 2751 | PERL_CONTEXT *cx; |
| 2752 | SV **newsp; |
| 2753 | I32 gimme = G_VOID; |
| 2754 | I32 optype; |
| 2755 | OP dummy; |
| 2756 | char tbuf[TYPE_DIGITS(long) + 12 + 10]; |
| 2757 | char *tmpbuf = tbuf; |
| 2758 | char *safestr; |
| 2759 | int runtime; |
| 2760 | CV* runcv = NULL; /* initialise to avoid compiler warnings */ |
| 2761 | STRLEN len; |
| 2762 | |
| 2763 | ENTER; |
| 2764 | lex_start(sv, NULL, FALSE); |
| 2765 | SAVETMPS; |
| 2766 | /* switch to eval mode */ |
| 2767 | |
| 2768 | if (IN_PERL_COMPILETIME) { |
| 2769 | SAVECOPSTASH_FREE(&PL_compiling); |
| 2770 | CopSTASH_set(&PL_compiling, PL_curstash); |
| 2771 | } |
| 2772 | if (PERLDB_NAMEEVAL && CopLINE(PL_curcop)) { |
| 2773 | SV * const sv = sv_newmortal(); |
| 2774 | Perl_sv_setpvf(aTHX_ sv, "_<(%.10seval %lu)[%s:%"IVdf"]", |
| 2775 | code, (unsigned long)++PL_evalseq, |
| 2776 | CopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); |
| 2777 | tmpbuf = SvPVX(sv); |
| 2778 | len = SvCUR(sv); |
| 2779 | } |
| 2780 | else |
| 2781 | len = my_snprintf(tmpbuf, sizeof(tbuf), "_<(%.10s_eval %lu)", code, |
| 2782 | (unsigned long)++PL_evalseq); |
| 2783 | SAVECOPFILE_FREE(&PL_compiling); |
| 2784 | CopFILE_set(&PL_compiling, tmpbuf+2); |
| 2785 | SAVECOPLINE(&PL_compiling); |
| 2786 | CopLINE_set(&PL_compiling, 1); |
| 2787 | /* XXX For C<eval "...">s within BEGIN {} blocks, this ends up |
| 2788 | deleting the eval's FILEGV from the stash before gv_check() runs |
| 2789 | (i.e. before run-time proper). To work around the coredump that |
| 2790 | ensues, we always turn GvMULTI_on for any globals that were |
| 2791 | introduced within evals. See force_ident(). GSAR 96-10-12 */ |
| 2792 | safestr = savepvn(tmpbuf, len); |
| 2793 | SAVEDELETE(PL_defstash, safestr, len); |
| 2794 | SAVEHINTS(); |
| 2795 | #ifdef OP_IN_REGISTER |
| 2796 | PL_opsave = op; |
| 2797 | #else |
| 2798 | SAVEVPTR(PL_op); |
| 2799 | #endif |
| 2800 | |
| 2801 | /* we get here either during compilation, or via pp_regcomp at runtime */ |
| 2802 | runtime = IN_PERL_RUNTIME; |
| 2803 | if (runtime) |
| 2804 | runcv = find_runcv(NULL); |
| 2805 | |
| 2806 | PL_op = &dummy; |
| 2807 | PL_op->op_type = OP_ENTEREVAL; |
| 2808 | PL_op->op_flags = 0; /* Avoid uninit warning. */ |
| 2809 | PUSHBLOCK(cx, CXt_EVAL|(IN_PERL_COMPILETIME ? 0 : CXp_REAL), SP); |
| 2810 | PUSHEVAL(cx, 0, NULL); |
| 2811 | |
| 2812 | if (runtime) |
| 2813 | (void) doeval(G_SCALAR, startop, runcv, PL_curcop->cop_seq); |
| 2814 | else |
| 2815 | (void) doeval(G_SCALAR, startop, PL_compcv, PL_cop_seqmax); |
| 2816 | POPBLOCK(cx,PL_curpm); |
| 2817 | POPEVAL(cx); |
| 2818 | |
| 2819 | (*startop)->op_type = OP_NULL; |
| 2820 | (*startop)->op_ppaddr = PL_ppaddr[OP_NULL]; |
| 2821 | lex_end(); |
| 2822 | /* XXX DAPM do this properly one year */ |
| 2823 | *padp = (AV*)SvREFCNT_inc_simple(PL_comppad); |
| 2824 | LEAVE; |
| 2825 | if (IN_PERL_COMPILETIME) |
| 2826 | CopHINTS_set(&PL_compiling, PL_hints); |
| 2827 | #ifdef OP_IN_REGISTER |
| 2828 | op = PL_opsave; |
| 2829 | #endif |
| 2830 | PERL_UNUSED_VAR(newsp); |
| 2831 | PERL_UNUSED_VAR(optype); |
| 2832 | |
| 2833 | return PL_eval_start; |
| 2834 | } |
| 2835 | |
| 2836 | |
| 2837 | /* |
| 2838 | =for apidoc find_runcv |
| 2839 | |
| 2840 | Locate the CV corresponding to the currently executing sub or eval. |
| 2841 | If db_seqp is non_null, skip CVs that are in the DB package and populate |
| 2842 | *db_seqp with the cop sequence number at the point that the DB:: code was |
| 2843 | entered. (allows debuggers to eval in the scope of the breakpoint rather |
| 2844 | than in the scope of the debugger itself). |
| 2845 | |
| 2846 | =cut |
| 2847 | */ |
| 2848 | |
| 2849 | CV* |
| 2850 | Perl_find_runcv(pTHX_ U32 *db_seqp) |
| 2851 | { |
| 2852 | dVAR; |
| 2853 | PERL_SI *si; |
| 2854 | |
| 2855 | if (db_seqp) |
| 2856 | *db_seqp = PL_curcop->cop_seq; |
| 2857 | for (si = PL_curstackinfo; si; si = si->si_prev) { |
| 2858 | I32 ix; |
| 2859 | for (ix = si->si_cxix; ix >= 0; ix--) { |
| 2860 | const PERL_CONTEXT *cx = &(si->si_cxstack[ix]); |
| 2861 | if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) { |
| 2862 | CV * const cv = cx->blk_sub.cv; |
| 2863 | /* skip DB:: code */ |
| 2864 | if (db_seqp && PL_debstash && CvSTASH(cv) == PL_debstash) { |
| 2865 | *db_seqp = cx->blk_oldcop->cop_seq; |
| 2866 | continue; |
| 2867 | } |
| 2868 | return cv; |
| 2869 | } |
| 2870 | else if (CxTYPE(cx) == CXt_EVAL && !CxTRYBLOCK(cx)) |
| 2871 | return PL_compcv; |
| 2872 | } |
| 2873 | } |
| 2874 | return PL_main_cv; |
| 2875 | } |
| 2876 | |
| 2877 | |
| 2878 | /* Compile a require/do, an eval '', or a /(?{...})/. |
| 2879 | * In the last case, startop is non-null, and contains the address of |
| 2880 | * a pointer that should be set to the just-compiled code. |
| 2881 | * outside is the lexically enclosing CV (if any) that invoked us. |
| 2882 | * Returns a bool indicating whether the compile was successful; if so, |
| 2883 | * PL_eval_start contains the first op of the compiled ocde; otherwise, |
| 2884 | * pushes undef (also croaks if startop != NULL). |
| 2885 | */ |
| 2886 | |
| 2887 | STATIC bool |
| 2888 | S_doeval(pTHX_ int gimme, OP** startop, CV* outside, U32 seq) |
| 2889 | { |
| 2890 | dVAR; dSP; |
| 2891 | OP * const saveop = PL_op; |
| 2892 | |
| 2893 | PL_in_eval = ((saveop && saveop->op_type == OP_REQUIRE) |
| 2894 | ? (EVAL_INREQUIRE | (PL_in_eval & EVAL_INEVAL)) |
| 2895 | : EVAL_INEVAL); |
| 2896 | |
| 2897 | PUSHMARK(SP); |
| 2898 | |
| 2899 | SAVESPTR(PL_compcv); |
| 2900 | PL_compcv = (CV*)newSV_type(SVt_PVCV); |
| 2901 | CvEVAL_on(PL_compcv); |
| 2902 | assert(CxTYPE(&cxstack[cxstack_ix]) == CXt_EVAL); |
| 2903 | cxstack[cxstack_ix].blk_eval.cv = PL_compcv; |
| 2904 | |
| 2905 | CvOUTSIDE_SEQ(PL_compcv) = seq; |
| 2906 | CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc_simple(outside); |
| 2907 | |
| 2908 | /* set up a scratch pad */ |
| 2909 | |
| 2910 | CvPADLIST(PL_compcv) = pad_new(padnew_SAVE); |
| 2911 | PL_op = NULL; /* avoid PL_op and PL_curpad referring to different CVs */ |
| 2912 | |
| 2913 | |
| 2914 | if (!PL_madskills) |
| 2915 | SAVEMORTALIZESV(PL_compcv); /* must remain until end of current statement */ |
| 2916 | |
| 2917 | /* make sure we compile in the right package */ |
| 2918 | |
| 2919 | if (CopSTASH_ne(PL_curcop, PL_curstash)) { |
| 2920 | SAVESPTR(PL_curstash); |
| 2921 | PL_curstash = CopSTASH(PL_curcop); |
| 2922 | } |
| 2923 | /* XXX:ajgo do we really need to alloc an AV for begin/checkunit */ |
| 2924 | SAVESPTR(PL_beginav); |
| 2925 | PL_beginav = newAV(); |
| 2926 | SAVEFREESV(PL_beginav); |
| 2927 | SAVESPTR(PL_unitcheckav); |
| 2928 | PL_unitcheckav = newAV(); |
| 2929 | SAVEFREESV(PL_unitcheckav); |
| 2930 | |
| 2931 | #ifdef PERL_MAD |
| 2932 | SAVEBOOL(PL_madskills); |
| 2933 | PL_madskills = 0; |
| 2934 | #endif |
| 2935 | |
| 2936 | /* try to compile it */ |
| 2937 | |
| 2938 | PL_eval_root = NULL; |
| 2939 | PL_curcop = &PL_compiling; |
| 2940 | CopARYBASE_set(PL_curcop, 0); |
| 2941 | if (saveop && (saveop->op_type != OP_REQUIRE) && (saveop->op_flags & OPf_SPECIAL)) |
| 2942 | PL_in_eval |= EVAL_KEEPERR; |
| 2943 | else |
| 2944 | sv_setpvn(ERRSV,"",0); |
| 2945 | if (yyparse() || PL_parser->error_count || !PL_eval_root) { |
| 2946 | SV **newsp; /* Used by POPBLOCK. */ |
| 2947 | PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
| 2948 | I32 optype = 0; /* Might be reset by POPEVAL. */ |
| 2949 | const char *msg; |
| 2950 | |
| 2951 | PL_op = saveop; |
| 2952 | if (PL_eval_root) { |
| 2953 | op_free(PL_eval_root); |
| 2954 | PL_eval_root = NULL; |
| 2955 | } |
| 2956 | SP = PL_stack_base + POPMARK; /* pop original mark */ |
| 2957 | if (!startop) { |
| 2958 | POPBLOCK(cx,PL_curpm); |
| 2959 | POPEVAL(cx); |
| 2960 | } |
| 2961 | lex_end(); |
| 2962 | LEAVE; |
| 2963 | |
| 2964 | msg = SvPVx_nolen_const(ERRSV); |
| 2965 | if (optype == OP_REQUIRE) { |
| 2966 | const SV * const nsv = cx->blk_eval.old_namesv; |
| 2967 | (void)hv_store(GvHVn(PL_incgv), SvPVX_const(nsv), SvCUR(nsv), |
| 2968 | &PL_sv_undef, 0); |
| 2969 | Perl_croak(aTHX_ "%sCompilation failed in require", |
| 2970 | *msg ? msg : "Unknown error\n"); |
| 2971 | } |
| 2972 | else if (startop) { |
| 2973 | POPBLOCK(cx,PL_curpm); |
| 2974 | POPEVAL(cx); |
| 2975 | Perl_croak(aTHX_ "%sCompilation failed in regexp", |
| 2976 | (*msg ? msg : "Unknown error\n")); |
| 2977 | } |
| 2978 | else { |
| 2979 | if (!*msg) { |
| 2980 | sv_setpvs(ERRSV, "Compilation error"); |
| 2981 | } |
| 2982 | } |
| 2983 | PERL_UNUSED_VAR(newsp); |
| 2984 | PUSHs(&PL_sv_undef); |
| 2985 | PUTBACK; |
| 2986 | return FALSE; |
| 2987 | } |
| 2988 | CopLINE_set(&PL_compiling, 0); |
| 2989 | if (startop) { |
| 2990 | *startop = PL_eval_root; |
| 2991 | } else |
| 2992 | SAVEFREEOP(PL_eval_root); |
| 2993 | |
| 2994 | /* Set the context for this new optree. |
| 2995 | * If the last op is an OP_REQUIRE, force scalar context. |
| 2996 | * Otherwise, propagate the context from the eval(). */ |
| 2997 | if (PL_eval_root->op_type == OP_LEAVEEVAL |
| 2998 | && cUNOPx(PL_eval_root)->op_first->op_type == OP_LINESEQ |
| 2999 | && cLISTOPx(cUNOPx(PL_eval_root)->op_first)->op_last->op_type |
| 3000 | == OP_REQUIRE) |
| 3001 | scalar(PL_eval_root); |
| 3002 | else if ((gimme & G_WANT) == G_VOID) |
| 3003 | scalarvoid(PL_eval_root); |
| 3004 | else if ((gimme & G_WANT) == G_ARRAY) |
| 3005 | list(PL_eval_root); |
| 3006 | else |
| 3007 | scalar(PL_eval_root); |
| 3008 | |
| 3009 | DEBUG_x(dump_eval()); |
| 3010 | |
| 3011 | /* Register with debugger: */ |
| 3012 | if (PERLDB_INTER && saveop && saveop->op_type == OP_REQUIRE) { |
| 3013 | CV * const cv = get_cv("DB::postponed", FALSE); |
| 3014 | if (cv) { |
| 3015 | dSP; |
| 3016 | PUSHMARK(SP); |
| 3017 | XPUSHs((SV*)CopFILEGV(&PL_compiling)); |
| 3018 | PUTBACK; |
| 3019 | call_sv((SV*)cv, G_DISCARD); |
| 3020 | } |
| 3021 | } |
| 3022 | |
| 3023 | if (PL_unitcheckav) |
| 3024 | call_list(PL_scopestack_ix, PL_unitcheckav); |
| 3025 | |
| 3026 | /* compiled okay, so do it */ |
| 3027 | |
| 3028 | CvDEPTH(PL_compcv) = 1; |
| 3029 | SP = PL_stack_base + POPMARK; /* pop original mark */ |
| 3030 | PL_op = saveop; /* The caller may need it. */ |
| 3031 | PL_parser->lex_state = LEX_NOTPARSING; /* $^S needs this. */ |
| 3032 | |
| 3033 | PUTBACK; |
| 3034 | return TRUE; |
| 3035 | } |
| 3036 | |
| 3037 | STATIC PerlIO * |
| 3038 | S_check_type_and_open(pTHX_ const char *name) |
| 3039 | { |
| 3040 | Stat_t st; |
| 3041 | const int st_rc = PerlLIO_stat(name, &st); |
| 3042 | |
| 3043 | if (st_rc < 0 || S_ISDIR(st.st_mode) || S_ISBLK(st.st_mode)) { |
| 3044 | return NULL; |
| 3045 | } |
| 3046 | |
| 3047 | return PerlIO_open(name, PERL_SCRIPT_MODE); |
| 3048 | } |
| 3049 | |
| 3050 | #ifndef PERL_DISABLE_PMC |
| 3051 | STATIC PerlIO * |
| 3052 | S_doopen_pm(pTHX_ const char *name, const STRLEN namelen) |
| 3053 | { |
| 3054 | PerlIO *fp; |
| 3055 | |
| 3056 | if (namelen > 3 && memEQs(name + namelen - 3, 3, ".pm")) { |
| 3057 | SV *const pmcsv = newSV(namelen + 2); |
| 3058 | char *const pmc = SvPVX(pmcsv); |
| 3059 | Stat_t pmcstat; |
| 3060 | |
| 3061 | memcpy(pmc, name, namelen); |
| 3062 | pmc[namelen] = 'c'; |
| 3063 | pmc[namelen + 1] = '\0'; |
| 3064 | |
| 3065 | if (PerlLIO_stat(pmc, &pmcstat) < 0) { |
| 3066 | fp = check_type_and_open(name); |
| 3067 | } |
| 3068 | else { |
| 3069 | fp = check_type_and_open(pmc); |
| 3070 | } |
| 3071 | SvREFCNT_dec(pmcsv); |
| 3072 | } |
| 3073 | else { |
| 3074 | fp = check_type_and_open(name); |
| 3075 | } |
| 3076 | return fp; |
| 3077 | } |
| 3078 | #else |
| 3079 | # define doopen_pm(name, namelen) check_type_and_open(name) |
| 3080 | #endif /* !PERL_DISABLE_PMC */ |
| 3081 | |
| 3082 | PP(pp_require) |
| 3083 | { |
| 3084 | dVAR; dSP; |
| 3085 | register PERL_CONTEXT *cx; |
| 3086 | SV *sv; |
| 3087 | const char *name; |
| 3088 | STRLEN len; |
| 3089 | char * unixname; |
| 3090 | STRLEN unixlen; |
| 3091 | #ifdef VMS |
| 3092 | int vms_unixname = 0; |
| 3093 | #endif |
| 3094 | const char *tryname = NULL; |
| 3095 | SV *namesv = NULL; |
| 3096 | const I32 gimme = GIMME_V; |
| 3097 | int filter_has_file = 0; |
| 3098 | PerlIO *tryrsfp = NULL; |
| 3099 | SV *filter_cache = NULL; |
| 3100 | SV *filter_state = NULL; |
| 3101 | SV *filter_sub = NULL; |
| 3102 | SV *hook_sv = NULL; |
| 3103 | SV *encoding; |
| 3104 | OP *op; |
| 3105 | |
| 3106 | sv = POPs; |
| 3107 | if ( (SvNIOKp(sv) || SvVOK(sv)) && PL_op->op_type != OP_DOFILE) { |
| 3108 | sv = new_version(sv); |
| 3109 | if (!sv_derived_from(PL_patchlevel, "version")) |
| 3110 | upg_version(PL_patchlevel, TRUE); |
| 3111 | if (cUNOP->op_first->op_type == OP_CONST && cUNOP->op_first->op_private & OPpCONST_NOVER) { |
| 3112 | if ( vcmp(sv,PL_patchlevel) <= 0 ) |
| 3113 | DIE(aTHX_ "Perls since %"SVf" too modern--this is %"SVf", stopped", |
| 3114 | SVfARG(vnormal(sv)), SVfARG(vnormal(PL_patchlevel))); |
| 3115 | } |
| 3116 | else { |
| 3117 | if ( vcmp(sv,PL_patchlevel) > 0 ) { |
| 3118 | I32 first = 0; |
| 3119 | AV *lav; |
| 3120 | SV * const req = SvRV(sv); |
| 3121 | SV * const pv = *hv_fetchs((HV*)req, "original", FALSE); |
| 3122 | |
| 3123 | /* get the left hand term */ |
| 3124 | lav = (AV *)SvRV(*hv_fetchs((HV*)req, "version", FALSE)); |
| 3125 | |
| 3126 | first = SvIV(*av_fetch(lav,0,0)); |
| 3127 | if ( first > (int)PERL_REVISION /* probably 'use 6.0' */ |
| 3128 | || hv_exists((HV*)req, "qv", 2 ) /* qv style */ |
| 3129 | || av_len(lav) > 1 /* FP with > 3 digits */ |
| 3130 | || strstr(SvPVX(pv),".0") /* FP with leading 0 */ |
| 3131 | ) { |
| 3132 | DIE(aTHX_ "Perl %"SVf" required--this is only " |
| 3133 | "%"SVf", stopped", SVfARG(vnormal(req)), |
| 3134 | SVfARG(vnormal(PL_patchlevel))); |
| 3135 | } |
| 3136 | else { /* probably 'use 5.10' or 'use 5.8' */ |
| 3137 | SV * hintsv = newSV(0); |
| 3138 | I32 second = 0; |
| 3139 | |
| 3140 | if (av_len(lav)>=1) |
| 3141 | second = SvIV(*av_fetch(lav,1,0)); |
| 3142 | |
| 3143 | second /= second >= 600 ? 100 : 10; |
| 3144 | hintsv = Perl_newSVpvf(aTHX_ "v%d.%d.%d", |
| 3145 | (int)first, (int)second,0); |
| 3146 | upg_version(hintsv, TRUE); |
| 3147 | |
| 3148 | DIE(aTHX_ "Perl %"SVf" required (did you mean %"SVf"?)" |
| 3149 | "--this is only %"SVf", stopped", |
| 3150 | SVfARG(vnormal(req)), |
| 3151 | SVfARG(vnormal(hintsv)), |
| 3152 | SVfARG(vnormal(PL_patchlevel))); |
| 3153 | } |
| 3154 | } |
| 3155 | } |
| 3156 | |
| 3157 | /* We do this only with use, not require. */ |
| 3158 | if (PL_compcv && |
| 3159 | /* If we request a version >= 5.9.5, load feature.pm with the |
| 3160 | * feature bundle that corresponds to the required version. */ |
| 3161 | vcmp(sv, sv_2mortal(upg_version(newSVnv(5.009005), FALSE))) >= 0) { |
| 3162 | SV *const importsv = vnormal(sv); |
| 3163 | *SvPVX_mutable(importsv) = ':'; |
| 3164 | ENTER; |
| 3165 | Perl_load_module(aTHX_ 0, newSVpvs("feature"), NULL, importsv, NULL); |
| 3166 | LEAVE; |
| 3167 | } |
| 3168 | |
| 3169 | RETPUSHYES; |
| 3170 | } |
| 3171 | name = SvPV_const(sv, len); |
| 3172 | if (!(name && len > 0 && *name)) |
| 3173 | DIE(aTHX_ "Null filename used"); |
| 3174 | TAINT_PROPER("require"); |
| 3175 | |
| 3176 | |
| 3177 | #ifdef VMS |
| 3178 | /* The key in the %ENV hash is in the syntax of file passed as the argument |
| 3179 | * usually this is in UNIX format, but sometimes in VMS format, which |
| 3180 | * can result in a module being pulled in more than once. |
| 3181 | * To prevent this, the key must be stored in UNIX format if the VMS |
| 3182 | * name can be translated to UNIX. |
| 3183 | */ |
| 3184 | if ((unixname = tounixspec(name, NULL)) != NULL) { |
| 3185 | unixlen = strlen(unixname); |
| 3186 | vms_unixname = 1; |
| 3187 | } |
| 3188 | else |
| 3189 | #endif |
| 3190 | { |
| 3191 | /* if not VMS or VMS name can not be translated to UNIX, pass it |
| 3192 | * through. |
| 3193 | */ |
| 3194 | unixname = (char *) name; |
| 3195 | unixlen = len; |
| 3196 | } |
| 3197 | if (PL_op->op_type == OP_REQUIRE) { |
| 3198 | SV * const * const svp = hv_fetch(GvHVn(PL_incgv), |
| 3199 | unixname, unixlen, 0); |
| 3200 | if ( svp ) { |
| 3201 | if (*svp != &PL_sv_undef) |
| 3202 | RETPUSHYES; |
| 3203 | else |
| 3204 | DIE(aTHX_ "Attempt to reload %s aborted.\n" |
| 3205 | "Compilation failed in require", unixname); |
| 3206 | } |
| 3207 | } |
| 3208 | |
| 3209 | /* prepare to compile file */ |
| 3210 | |
| 3211 | if (path_is_absolute(name)) { |
| 3212 | tryname = name; |
| 3213 | tryrsfp = doopen_pm(name, len); |
| 3214 | } |
| 3215 | #ifdef MACOS_TRADITIONAL |
| 3216 | if (!tryrsfp) { |
| 3217 | char newname[256]; |
| 3218 | |
| 3219 | MacPerl_CanonDir(name, newname, 1); |
| 3220 | if (path_is_absolute(newname)) { |
| 3221 | tryname = newname; |
| 3222 | tryrsfp = doopen_pm(newname, strlen(newname)); |
| 3223 | } |
| 3224 | } |
| 3225 | #endif |
| 3226 | if (!tryrsfp) { |
| 3227 | AV * const ar = GvAVn(PL_incgv); |
| 3228 | I32 i; |
| 3229 | #ifdef VMS |
| 3230 | if (vms_unixname) |
| 3231 | #endif |
| 3232 | { |
| 3233 | namesv = newSV_type(SVt_PV); |
| 3234 | for (i = 0; i <= AvFILL(ar); i++) { |
| 3235 | SV * const dirsv = *av_fetch(ar, i, TRUE); |
| 3236 | |
| 3237 | if (SvTIED_mg((SV*)ar, PERL_MAGIC_tied)) |
| 3238 | mg_get(dirsv); |
| 3239 | if (SvROK(dirsv)) { |
| 3240 | int count; |
| 3241 | SV **svp; |
| 3242 | SV *loader = dirsv; |
| 3243 | |
| 3244 | if (SvTYPE(SvRV(loader)) == SVt_PVAV |
| 3245 | && !sv_isobject(loader)) |
| 3246 | { |
| 3247 | loader = *av_fetch((AV *)SvRV(loader), 0, TRUE); |
| 3248 | } |
| 3249 | |
| 3250 | Perl_sv_setpvf(aTHX_ namesv, "/loader/0x%"UVxf"/%s", |
| 3251 | PTR2UV(SvRV(dirsv)), name); |
| 3252 | tryname = SvPVX_const(namesv); |
| 3253 | tryrsfp = NULL; |
| 3254 | |
| 3255 | ENTER; |
| 3256 | SAVETMPS; |
| 3257 | EXTEND(SP, 2); |
| 3258 | |
| 3259 | PUSHMARK(SP); |
| 3260 | PUSHs(dirsv); |
| 3261 | PUSHs(sv); |
| 3262 | PUTBACK; |
| 3263 | if (sv_isobject(loader)) |
| 3264 | count = call_method("INC", G_ARRAY); |
| 3265 | else |
| 3266 | count = call_sv(loader, G_ARRAY); |
| 3267 | SPAGAIN; |
| 3268 | |
| 3269 | /* Adjust file name if the hook has set an %INC entry */ |
| 3270 | svp = hv_fetch(GvHVn(PL_incgv), name, len, 0); |
| 3271 | if (svp) |
| 3272 | tryname = SvPVX_const(*svp); |
| 3273 | |
| 3274 | if (count > 0) { |
| 3275 | int i = 0; |
| 3276 | SV *arg; |
| 3277 | |
| 3278 | SP -= count - 1; |
| 3279 | arg = SP[i++]; |
| 3280 | |
| 3281 | if (SvROK(arg) && (SvTYPE(SvRV(arg)) <= SVt_PVLV) |
| 3282 | && !isGV_with_GP(SvRV(arg))) { |
| 3283 | filter_cache = SvRV(arg); |
| 3284 | SvREFCNT_inc_simple_void_NN(filter_cache); |
| 3285 | |
| 3286 | if (i < count) { |
| 3287 | arg = SP[i++]; |
| 3288 | } |
| 3289 | } |
| 3290 | |
| 3291 | if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVGV) { |
| 3292 | arg = SvRV(arg); |
| 3293 | } |
| 3294 | |
| 3295 | if (SvTYPE(arg) == SVt_PVGV) { |
| 3296 | IO * const io = GvIO((GV *)arg); |
| 3297 | |
| 3298 | ++filter_has_file; |
| 3299 | |
| 3300 | if (io) { |
| 3301 | tryrsfp = IoIFP(io); |
| 3302 | if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { |
| 3303 | PerlIO_close(IoOFP(io)); |
| 3304 | } |
| 3305 | IoIFP(io) = NULL; |
| 3306 | IoOFP(io) = NULL; |
| 3307 | } |
| 3308 | |
| 3309 | if (i < count) { |
| 3310 | arg = SP[i++]; |
| 3311 | } |
| 3312 | } |
| 3313 | |
| 3314 | if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVCV) { |
| 3315 | filter_sub = arg; |
| 3316 | SvREFCNT_inc_simple_void_NN(filter_sub); |
| 3317 | |
| 3318 | if (i < count) { |
| 3319 | filter_state = SP[i]; |
| 3320 | SvREFCNT_inc_simple_void(filter_state); |
| 3321 | } |
| 3322 | } |
| 3323 | |
| 3324 | if (!tryrsfp && (filter_cache || filter_sub)) { |
| 3325 | tryrsfp = PerlIO_open(BIT_BUCKET, |
| 3326 | PERL_SCRIPT_MODE); |
| 3327 | } |
| 3328 | SP--; |
| 3329 | } |
| 3330 | |
| 3331 | PUTBACK; |
| 3332 | FREETMPS; |
| 3333 | LEAVE; |
| 3334 | |
| 3335 | if (tryrsfp) { |
| 3336 | hook_sv = dirsv; |
| 3337 | break; |
| 3338 | } |
| 3339 | |
| 3340 | filter_has_file = 0; |
| 3341 | if (filter_cache) { |
| 3342 | SvREFCNT_dec(filter_cache); |
| 3343 | filter_cache = NULL; |
| 3344 | } |
| 3345 | if (filter_state) { |
| 3346 | SvREFCNT_dec(filter_state); |
| 3347 | filter_state = NULL; |
| 3348 | } |
| 3349 | if (filter_sub) { |
| 3350 | SvREFCNT_dec(filter_sub); |
| 3351 | filter_sub = NULL; |
| 3352 | } |
| 3353 | } |
| 3354 | else { |
| 3355 | if (!path_is_absolute(name) |
| 3356 | #ifdef MACOS_TRADITIONAL |
| 3357 | /* We consider paths of the form :a:b ambiguous and interpret them first |
| 3358 | as global then as local |
| 3359 | */ |
| 3360 | || (*name == ':' && name[1] != ':' && strchr(name+2, ':')) |
| 3361 | #endif |
| 3362 | ) { |
| 3363 | const char *dir; |
| 3364 | STRLEN dirlen; |
| 3365 | |
| 3366 | if (SvOK(dirsv)) { |
| 3367 | dir = SvPV_const(dirsv, dirlen); |
| 3368 | } else { |
| 3369 | dir = ""; |
| 3370 | dirlen = 0; |
| 3371 | } |
| 3372 | |
| 3373 | #ifdef MACOS_TRADITIONAL |
| 3374 | char buf1[256]; |
| 3375 | char buf2[256]; |
| 3376 | |
| 3377 | MacPerl_CanonDir(name, buf2, 1); |
| 3378 | Perl_sv_setpvf(aTHX_ namesv, "%s%s", MacPerl_CanonDir(dir, buf1, 0), buf2+(buf2[0] == ':')); |
| 3379 | #else |
| 3380 | # ifdef VMS |
| 3381 | char *unixdir; |
| 3382 | if ((unixdir = tounixpath(dir, NULL)) == NULL) |
| 3383 | continue; |
| 3384 | sv_setpv(namesv, unixdir); |
| 3385 | sv_catpv(namesv, unixname); |
| 3386 | # else |
| 3387 | # ifdef __SYMBIAN32__ |
| 3388 | if (PL_origfilename[0] && |
| 3389 | PL_origfilename[1] == ':' && |
| 3390 | !(dir[0] && dir[1] == ':')) |
| 3391 | Perl_sv_setpvf(aTHX_ namesv, |
| 3392 | "%c:%s\\%s", |
| 3393 | PL_origfilename[0], |
| 3394 | dir, name); |
| 3395 | else |
| 3396 | Perl_sv_setpvf(aTHX_ namesv, |
| 3397 | "%s\\%s", |
| 3398 | dir, name); |
| 3399 | # else |
| 3400 | /* The equivalent of |
| 3401 | Perl_sv_setpvf(aTHX_ namesv, "%s/%s", dir, name); |
| 3402 | but without the need to parse the format string, or |
| 3403 | call strlen on either pointer, and with the correct |
| 3404 | allocation up front. */ |
| 3405 | { |
| 3406 | char *tmp = SvGROW(namesv, dirlen + len + 2); |
| 3407 | |
| 3408 | memcpy(tmp, dir, dirlen); |
| 3409 | tmp +=dirlen; |
| 3410 | *tmp++ = '/'; |
| 3411 | /* name came from an SV, so it will have a '\0' at the |
| 3412 | end that we can copy as part of this memcpy(). */ |
| 3413 | memcpy(tmp, name, len + 1); |
| 3414 | |
| 3415 | SvCUR_set(namesv, dirlen + len + 1); |
| 3416 | |
| 3417 | /* Don't even actually have to turn SvPOK_on() as we |
| 3418 | access it directly with SvPVX() below. */ |
| 3419 | } |
| 3420 | # endif |
| 3421 | # endif |
| 3422 | #endif |
| 3423 | TAINT_PROPER("require"); |
| 3424 | tryname = SvPVX_const(namesv); |
| 3425 | tryrsfp = doopen_pm(tryname, SvCUR(namesv)); |
| 3426 | if (tryrsfp) { |
| 3427 | if (tryname[0] == '.' && tryname[1] == '/') |
| 3428 | tryname += 2; |
| 3429 | break; |
| 3430 | } |
| 3431 | else if (errno == EMFILE) |
| 3432 | /* no point in trying other paths if out of handles */ |
| 3433 | break; |
| 3434 | } |
| 3435 | } |
| 3436 | } |
| 3437 | } |
| 3438 | } |
| 3439 | SAVECOPFILE_FREE(&PL_compiling); |
| 3440 | CopFILE_set(&PL_compiling, tryrsfp ? tryname : name); |
| 3441 | SvREFCNT_dec(namesv); |
| 3442 | if (!tryrsfp) { |
| 3443 | if (PL_op->op_type == OP_REQUIRE) { |
| 3444 | const char *msgstr = name; |
| 3445 | if(errno == EMFILE) { |
| 3446 | SV * const msg |
| 3447 | = sv_2mortal(Perl_newSVpvf(aTHX_ "%s: %s", msgstr, |
| 3448 | Strerror(errno))); |
| 3449 | msgstr = SvPV_nolen_const(msg); |
| 3450 | } else { |
| 3451 | if (namesv) { /* did we lookup @INC? */ |
| 3452 | AV * const ar = GvAVn(PL_incgv); |
| 3453 | I32 i; |
| 3454 | SV * const msg = sv_2mortal(Perl_newSVpvf(aTHX_ |
| 3455 | "%s in @INC%s%s (@INC contains:", |
| 3456 | msgstr, |
| 3457 | (instr(msgstr, ".h ") |
| 3458 | ? " (change .h to .ph maybe?)" : ""), |
| 3459 | (instr(msgstr, ".ph ") |
| 3460 | ? " (did you run h2ph?)" : "") |
| 3461 | )); |
| 3462 | |
| 3463 | for (i = 0; i <= AvFILL(ar); i++) { |
| 3464 | sv_catpvs(msg, " "); |
| 3465 | sv_catsv(msg, *av_fetch(ar, i, TRUE)); |
| 3466 | } |
| 3467 | sv_catpvs(msg, ")"); |
| 3468 | msgstr = SvPV_nolen_const(msg); |
| 3469 | } |
| 3470 | } |
| 3471 | DIE(aTHX_ "Can't locate %s", msgstr); |
| 3472 | } |
| 3473 | |
| 3474 | RETPUSHUNDEF; |
| 3475 | } |
| 3476 | else |
| 3477 | SETERRNO(0, SS_NORMAL); |
| 3478 | |
| 3479 | /* Assume success here to prevent recursive requirement. */ |
| 3480 | /* name is never assigned to again, so len is still strlen(name) */ |
| 3481 | /* Check whether a hook in @INC has already filled %INC */ |
| 3482 | if (!hook_sv) { |
| 3483 | (void)hv_store(GvHVn(PL_incgv), |
| 3484 | unixname, unixlen, newSVpv(CopFILE(&PL_compiling),0),0); |
| 3485 | } else { |
| 3486 | SV** const svp = hv_fetch(GvHVn(PL_incgv), unixname, unixlen, 0); |
| 3487 | if (!svp) |
| 3488 | (void)hv_store(GvHVn(PL_incgv), |
| 3489 | unixname, unixlen, SvREFCNT_inc_simple(hook_sv), 0 ); |
| 3490 | } |
| 3491 | |
| 3492 | ENTER; |
| 3493 | SAVETMPS; |
| 3494 | lex_start(NULL, tryrsfp, TRUE); |
| 3495 | |
| 3496 | SAVEHINTS(); |
| 3497 | PL_hints = 0; |
| 3498 | SAVECOMPILEWARNINGS(); |
| 3499 | if (PL_dowarn & G_WARN_ALL_ON) |
| 3500 | PL_compiling.cop_warnings = pWARN_ALL ; |
| 3501 | else if (PL_dowarn & G_WARN_ALL_OFF) |
| 3502 | PL_compiling.cop_warnings = pWARN_NONE ; |
| 3503 | else |
| 3504 | PL_compiling.cop_warnings = pWARN_STD ; |
| 3505 | |
| 3506 | if (filter_sub || filter_cache) { |
| 3507 | SV * const datasv = filter_add(S_run_user_filter, NULL); |
| 3508 | IoLINES(datasv) = filter_has_file; |
| 3509 | IoTOP_GV(datasv) = (GV *)filter_state; |
| 3510 | IoBOTTOM_GV(datasv) = (GV *)filter_sub; |
| 3511 | IoFMT_GV(datasv) = (GV *)filter_cache; |
| 3512 | } |
| 3513 | |
| 3514 | /* switch to eval mode */ |
| 3515 | PUSHBLOCK(cx, CXt_EVAL, SP); |
| 3516 | PUSHEVAL(cx, name, NULL); |
| 3517 | cx->blk_eval.retop = PL_op->op_next; |
| 3518 | |
| 3519 | SAVECOPLINE(&PL_compiling); |
| 3520 | CopLINE_set(&PL_compiling, 0); |
| 3521 | |
| 3522 | PUTBACK; |
| 3523 | |
| 3524 | /* Store and reset encoding. */ |
| 3525 | encoding = PL_encoding; |
| 3526 | PL_encoding = NULL; |
| 3527 | |
| 3528 | if (doeval(gimme, NULL, NULL, PL_curcop->cop_seq)) |
| 3529 | op = DOCATCH(PL_eval_start); |
| 3530 | else |
| 3531 | op = PL_op->op_next; |
| 3532 | |
| 3533 | /* Restore encoding. */ |
| 3534 | PL_encoding = encoding; |
| 3535 | |
| 3536 | return op; |
| 3537 | } |
| 3538 | |
| 3539 | PP(pp_entereval) |
| 3540 | { |
| 3541 | dVAR; dSP; |
| 3542 | register PERL_CONTEXT *cx; |
| 3543 | SV *sv; |
| 3544 | const I32 gimme = GIMME_V; |
| 3545 | const I32 was = PL_sub_generation; |
| 3546 | char tbuf[TYPE_DIGITS(long) + 12]; |
| 3547 | char *tmpbuf = tbuf; |
| 3548 | char *safestr; |
| 3549 | STRLEN len; |
| 3550 | bool ok; |
| 3551 | CV* runcv; |
| 3552 | U32 seq; |
| 3553 | HV *saved_hh = NULL; |
| 3554 | const char * const fakestr = "_<(eval )"; |
| 3555 | const int fakelen = 9 + 1; |
| 3556 | |
| 3557 | if (PL_op->op_private & OPpEVAL_HAS_HH) { |
| 3558 | saved_hh = (HV*) SvREFCNT_inc(POPs); |
| 3559 | } |
| 3560 | sv = POPs; |
| 3561 | |
| 3562 | TAINT_IF(SvTAINTED(sv)); |
| 3563 | TAINT_PROPER("eval"); |
| 3564 | |
| 3565 | ENTER; |
| 3566 | lex_start(sv, NULL, FALSE); |
| 3567 | SAVETMPS; |
| 3568 | |
| 3569 | /* switch to eval mode */ |
| 3570 | |
| 3571 | if (PERLDB_NAMEEVAL && CopLINE(PL_curcop)) { |
| 3572 | SV * const temp_sv = sv_newmortal(); |
| 3573 | Perl_sv_setpvf(aTHX_ temp_sv, "_<(eval %lu)[%s:%"IVdf"]", |
| 3574 | (unsigned long)++PL_evalseq, |
| 3575 | CopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); |
| 3576 | tmpbuf = SvPVX(temp_sv); |
| 3577 | len = SvCUR(temp_sv); |
| 3578 | } |
| 3579 | else |
| 3580 | len = my_snprintf(tmpbuf, sizeof(tbuf), "_<(eval %lu)", (unsigned long)++PL_evalseq); |
| 3581 | SAVECOPFILE_FREE(&PL_compiling); |
| 3582 | CopFILE_set(&PL_compiling, tmpbuf+2); |
| 3583 | SAVECOPLINE(&PL_compiling); |
| 3584 | CopLINE_set(&PL_compiling, 1); |
| 3585 | /* XXX For C<eval "...">s within BEGIN {} blocks, this ends up |
| 3586 | deleting the eval's FILEGV from the stash before gv_check() runs |
| 3587 | (i.e. before run-time proper). To work around the coredump that |
| 3588 | ensues, we always turn GvMULTI_on for any globals that were |
| 3589 | introduced within evals. See force_ident(). GSAR 96-10-12 */ |
| 3590 | safestr = savepvn(tmpbuf, len); |
| 3591 | SAVEDELETE(PL_defstash, safestr, len); |
| 3592 | SAVEHINTS(); |
| 3593 | PL_hints = PL_op->op_targ; |
| 3594 | if (saved_hh) |
| 3595 | GvHV(PL_hintgv) = saved_hh; |
| 3596 | SAVECOMPILEWARNINGS(); |
| 3597 | PL_compiling.cop_warnings = DUP_WARNINGS(PL_curcop->cop_warnings); |
| 3598 | if (PL_compiling.cop_hints_hash) { |
| 3599 | Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash); |
| 3600 | } |
| 3601 | PL_compiling.cop_hints_hash = PL_curcop->cop_hints_hash; |
| 3602 | if (PL_compiling.cop_hints_hash) { |
| 3603 | HINTS_REFCNT_LOCK; |
| 3604 | PL_compiling.cop_hints_hash->refcounted_he_refcnt++; |
| 3605 | HINTS_REFCNT_UNLOCK; |
| 3606 | } |
| 3607 | /* special case: an eval '' executed within the DB package gets lexically |
| 3608 | * placed in the first non-DB CV rather than the current CV - this |
| 3609 | * allows the debugger to execute code, find lexicals etc, in the |
| 3610 | * scope of the code being debugged. Passing &seq gets find_runcv |
| 3611 | * to do the dirty work for us */ |
| 3612 | runcv = find_runcv(&seq); |
| 3613 | |
| 3614 | PUSHBLOCK(cx, (CXt_EVAL|CXp_REAL), SP); |
| 3615 | PUSHEVAL(cx, 0, NULL); |
| 3616 | cx->blk_eval.retop = PL_op->op_next; |
| 3617 | |
| 3618 | /* prepare to compile string */ |
| 3619 | |
| 3620 | if (PERLDB_LINE && PL_curstash != PL_debstash) |
| 3621 | save_lines(CopFILEAV(&PL_compiling), PL_parser->linestr); |
| 3622 | PUTBACK; |
| 3623 | ok = doeval(gimme, NULL, runcv, seq); |
| 3624 | if (PERLDB_INTER && was != (I32)PL_sub_generation /* Some subs defined here. */ |
| 3625 | && ok) { |
| 3626 | /* Copy in anything fake and short. */ |
| 3627 | my_strlcpy(safestr, fakestr, fakelen); |
| 3628 | } |
| 3629 | return ok ? DOCATCH(PL_eval_start) : PL_op->op_next; |
| 3630 | } |
| 3631 | |
| 3632 | PP(pp_leaveeval) |
| 3633 | { |
| 3634 | dVAR; dSP; |
| 3635 | register SV **mark; |
| 3636 | SV **newsp; |
| 3637 | PMOP *newpm; |
| 3638 | I32 gimme; |
| 3639 | register PERL_CONTEXT *cx; |
| 3640 | OP *retop; |
| 3641 | const U8 save_flags = PL_op -> op_flags; |
| 3642 | I32 optype; |
| 3643 | |
| 3644 | POPBLOCK(cx,newpm); |
| 3645 | POPEVAL(cx); |
| 3646 | retop = cx->blk_eval.retop; |
| 3647 | |
| 3648 | TAINT_NOT; |
| 3649 | if (gimme == G_VOID) |
| 3650 | MARK = newsp; |
| 3651 | else if (gimme == G_SCALAR) { |
| 3652 | MARK = newsp + 1; |
| 3653 | if (MARK <= SP) { |
| 3654 | if (SvFLAGS(TOPs) & SVs_TEMP) |
| 3655 | *MARK = TOPs; |
| 3656 | else |
| 3657 | *MARK = sv_mortalcopy(TOPs); |
| 3658 | } |
| 3659 | else { |
| 3660 | MEXTEND(mark,0); |
| 3661 | *MARK = &PL_sv_undef; |
| 3662 | } |
| 3663 | SP = MARK; |
| 3664 | } |
| 3665 | else { |
| 3666 | /* in case LEAVE wipes old return values */ |
| 3667 | for (mark = newsp + 1; mark <= SP; mark++) { |
| 3668 | if (!(SvFLAGS(*mark) & SVs_TEMP)) { |
| 3669 | *mark = sv_mortalcopy(*mark); |
| 3670 | TAINT_NOT; /* Each item is independent */ |
| 3671 | } |
| 3672 | } |
| 3673 | } |
| 3674 | PL_curpm = newpm; /* Don't pop $1 et al till now */ |
| 3675 | |
| 3676 | #ifdef DEBUGGING |
| 3677 | assert(CvDEPTH(PL_compcv) == 1); |
| 3678 | #endif |
| 3679 | CvDEPTH(PL_compcv) = 0; |
| 3680 | lex_end(); |
| 3681 | |
| 3682 | if (optype == OP_REQUIRE && |
| 3683 | !(gimme == G_SCALAR ? SvTRUE(*SP) : SP > newsp)) |
| 3684 | { |
| 3685 | /* Unassume the success we assumed earlier. */ |
| 3686 | SV * const nsv = cx->blk_eval.old_namesv; |
| 3687 | (void)hv_delete(GvHVn(PL_incgv), SvPVX_const(nsv), SvCUR(nsv), G_DISCARD); |
| 3688 | retop = Perl_die(aTHX_ "%"SVf" did not return a true value", SVfARG(nsv)); |
| 3689 | /* die_where() did LEAVE, or we won't be here */ |
| 3690 | } |
| 3691 | else { |
| 3692 | LEAVE; |
| 3693 | if (!(save_flags & OPf_SPECIAL)) |
| 3694 | sv_setpvn(ERRSV,"",0); |
| 3695 | } |
| 3696 | |
| 3697 | RETURNOP(retop); |
| 3698 | } |
| 3699 | |
| 3700 | /* Common code for Perl_call_sv and Perl_fold_constants, put here to keep it |
| 3701 | close to the related Perl_create_eval_scope. */ |
| 3702 | void |
| 3703 | Perl_delete_eval_scope(pTHX) |
| 3704 | { |
| 3705 | SV **newsp; |
| 3706 | PMOP *newpm; |
| 3707 | I32 gimme; |
| 3708 | register PERL_CONTEXT *cx; |
| 3709 | I32 optype; |
| 3710 | |
| 3711 | POPBLOCK(cx,newpm); |
| 3712 | POPEVAL(cx); |
| 3713 | PL_curpm = newpm; |
| 3714 | LEAVE; |
| 3715 | PERL_UNUSED_VAR(newsp); |
| 3716 | PERL_UNUSED_VAR(gimme); |
| 3717 | PERL_UNUSED_VAR(optype); |
| 3718 | } |
| 3719 | |
| 3720 | /* Common-ish code salvaged from Perl_call_sv and pp_entertry, because it was |
| 3721 | also needed by Perl_fold_constants. */ |
| 3722 | PERL_CONTEXT * |
| 3723 | Perl_create_eval_scope(pTHX_ U32 flags) |
| 3724 | { |
| 3725 | PERL_CONTEXT *cx; |
| 3726 | const I32 gimme = GIMME_V; |
| 3727 | |
| 3728 | ENTER; |
| 3729 | SAVETMPS; |
| 3730 | |
| 3731 | PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp); |
| 3732 | PUSHEVAL(cx, 0, 0); |
| 3733 | |
| 3734 | PL_in_eval = EVAL_INEVAL; |
| 3735 | if (flags & G_KEEPERR) |
| 3736 | PL_in_eval |= EVAL_KEEPERR; |
| 3737 | else |
| 3738 | sv_setpvn(ERRSV,"",0); |
| 3739 | if (flags & G_FAKINGEVAL) { |
| 3740 | PL_eval_root = PL_op; /* Only needed so that goto works right. */ |
| 3741 | } |
| 3742 | return cx; |
| 3743 | } |
| 3744 | |
| 3745 | PP(pp_entertry) |
| 3746 | { |
| 3747 | dVAR; |
| 3748 | PERL_CONTEXT * const cx = create_eval_scope(0); |
| 3749 | cx->blk_eval.retop = cLOGOP->op_other->op_next; |
| 3750 | return DOCATCH(PL_op->op_next); |
| 3751 | } |
| 3752 | |
| 3753 | PP(pp_leavetry) |
| 3754 | { |
| 3755 | dVAR; dSP; |
| 3756 | SV **newsp; |
| 3757 | PMOP *newpm; |
| 3758 | I32 gimme; |
| 3759 | register PERL_CONTEXT *cx; |
| 3760 | I32 optype; |
| 3761 | |
| 3762 | POPBLOCK(cx,newpm); |
| 3763 | POPEVAL(cx); |
| 3764 | PERL_UNUSED_VAR(optype); |
| 3765 | |
| 3766 | TAINT_NOT; |
| 3767 | if (gimme == G_VOID) |
| 3768 | SP = newsp; |
| 3769 | else if (gimme == G_SCALAR) { |
| 3770 | register SV **mark; |
| 3771 | MARK = newsp + 1; |
| 3772 | if (MARK <= SP) { |
| 3773 | if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP)) |
| 3774 | *MARK = TOPs; |
| 3775 | else |
| 3776 | *MARK = sv_mortalcopy(TOPs); |
| 3777 | } |
| 3778 | else { |
| 3779 | MEXTEND(mark,0); |
| 3780 | *MARK = &PL_sv_undef; |
| 3781 | } |
| 3782 | SP = MARK; |
| 3783 | } |
| 3784 | else { |
| 3785 | /* in case LEAVE wipes old return values */ |
| 3786 | register SV **mark; |
| 3787 | for (mark = newsp + 1; mark <= SP; mark++) { |
| 3788 | if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP))) { |
| 3789 | *mark = sv_mortalcopy(*mark); |
| 3790 | TAINT_NOT; /* Each item is independent */ |
| 3791 | } |
| 3792 | } |
| 3793 | } |
| 3794 | PL_curpm = newpm; /* Don't pop $1 et al till now */ |
| 3795 | |
| 3796 | LEAVE; |
| 3797 | sv_setpvn(ERRSV,"",0); |
| 3798 | RETURN; |
| 3799 | } |
| 3800 | |
| 3801 | PP(pp_entergiven) |
| 3802 | { |
| 3803 | dVAR; dSP; |
| 3804 | register PERL_CONTEXT *cx; |
| 3805 | const I32 gimme = GIMME_V; |
| 3806 | |
| 3807 | ENTER; |
| 3808 | SAVETMPS; |
| 3809 | |
| 3810 | if (PL_op->op_targ == 0) { |
| 3811 | SV ** const defsv_p = &GvSV(PL_defgv); |
| 3812 | *defsv_p = newSVsv(POPs); |
| 3813 | SAVECLEARSV(*defsv_p); |
| 3814 | } |
| 3815 | else |
| 3816 | sv_setsv(PAD_SV(PL_op->op_targ), POPs); |
| 3817 | |
| 3818 | PUSHBLOCK(cx, CXt_GIVEN, SP); |
| 3819 | PUSHGIVEN(cx); |
| 3820 | |
| 3821 | RETURN; |
| 3822 | } |
| 3823 | |
| 3824 | PP(pp_leavegiven) |
| 3825 | { |
| 3826 | dVAR; dSP; |
| 3827 | register PERL_CONTEXT *cx; |
| 3828 | I32 gimme; |
| 3829 | SV **newsp; |
| 3830 | PMOP *newpm; |
| 3831 | PERL_UNUSED_CONTEXT; |
| 3832 | |
| 3833 | POPBLOCK(cx,newpm); |
| 3834 | assert(CxTYPE(cx) == CXt_GIVEN); |
| 3835 | |
| 3836 | SP = newsp; |
| 3837 | PUTBACK; |
| 3838 | |
| 3839 | PL_curpm = newpm; /* pop $1 et al */ |
| 3840 | |
| 3841 | LEAVE; |
| 3842 | |
| 3843 | return NORMAL; |
| 3844 | } |
| 3845 | |
| 3846 | /* Helper routines used by pp_smartmatch */ |
| 3847 | STATIC PMOP * |
| 3848 | S_make_matcher(pTHX_ REGEXP *re) |
| 3849 | { |
| 3850 | dVAR; |
| 3851 | PMOP *matcher = (PMOP *) newPMOP(OP_MATCH, OPf_WANT_SCALAR | OPf_STACKED); |
| 3852 | PM_SETRE(matcher, ReREFCNT_inc(re)); |
| 3853 | |
| 3854 | SAVEFREEOP((OP *) matcher); |
| 3855 | ENTER; SAVETMPS; |
| 3856 | SAVEOP(); |
| 3857 | return matcher; |
| 3858 | } |
| 3859 | |
| 3860 | STATIC bool |
| 3861 | S_matcher_matches_sv(pTHX_ PMOP *matcher, SV *sv) |
| 3862 | { |
| 3863 | dVAR; |
| 3864 | dSP; |
| 3865 | |
| 3866 | PL_op = (OP *) matcher; |
| 3867 | XPUSHs(sv); |
| 3868 | PUTBACK; |
| 3869 | (void) pp_match(); |
| 3870 | SPAGAIN; |
| 3871 | return (SvTRUEx(POPs)); |
| 3872 | } |
| 3873 | |
| 3874 | STATIC void |
| 3875 | S_destroy_matcher(pTHX_ PMOP *matcher) |
| 3876 | { |
| 3877 | dVAR; |
| 3878 | PERL_UNUSED_ARG(matcher); |
| 3879 | FREETMPS; |
| 3880 | LEAVE; |
| 3881 | } |
| 3882 | |
| 3883 | /* Do a smart match */ |
| 3884 | PP(pp_smartmatch) |
| 3885 | { |
| 3886 | return do_smartmatch(NULL, NULL); |
| 3887 | } |
| 3888 | |
| 3889 | /* This version of do_smartmatch() implements the |
| 3890 | * table of smart matches that is found in perlsyn. |
| 3891 | */ |
| 3892 | STATIC OP * |
| 3893 | S_do_smartmatch(pTHX_ HV *seen_this, HV *seen_other) |
| 3894 | { |
| 3895 | dVAR; |
| 3896 | dSP; |
| 3897 | |
| 3898 | SV *e = TOPs; /* e is for 'expression' */ |
| 3899 | SV *d = TOPm1s; /* d is for 'default', as in PL_defgv */ |
| 3900 | SV *This, *Other; /* 'This' (and Other to match) to play with C++ */ |
| 3901 | REGEXP *this_regex, *other_regex; |
| 3902 | |
| 3903 | # define NOT_EMPTY_PROTO(cv) (!SvPOK(cv) || SvCUR(cv) == 0) |
| 3904 | |
| 3905 | # define SM_REF(type) ( \ |
| 3906 | (SvROK(d) && (SvTYPE(This = SvRV(d)) == SVt_##type) && (Other = e)) \ |
| 3907 | || (SvROK(e) && (SvTYPE(This = SvRV(e)) == SVt_##type) && (Other = d))) |
| 3908 | |
| 3909 | # define SM_CV_NEP /* Find a code ref without an empty prototype */ \ |
| 3910 | ((SvROK(d) && (SvTYPE(This = SvRV(d)) == SVt_PVCV) \ |
| 3911 | && NOT_EMPTY_PROTO(This) && (Other = e)) \ |
| 3912 | || (SvROK(e) && (SvTYPE(This = SvRV(e)) == SVt_PVCV) \ |
| 3913 | && NOT_EMPTY_PROTO(This) && (Other = d))) |
| 3914 | |
| 3915 | # define SM_REGEX ( \ |
| 3916 | (SvROK(d) && (SvTYPE(This = SvRV(d)) == SVt_REGEXP) \ |
| 3917 | && (this_regex = (REGEXP*) This) \ |
| 3918 | && (Other = e)) \ |
| 3919 | || \ |
| 3920 | (SvROK(e) && (SvTYPE(This = SvRV(e)) == SVt_REGEXP) \ |
| 3921 | && (this_regex = (REGEXP*) This) \ |
| 3922 | && (Other = d)) ) |
| 3923 | |
| 3924 | |
| 3925 | # define SM_OTHER_REF(type) \ |
| 3926 | (SvROK(Other) && SvTYPE(SvRV(Other)) == SVt_##type) |
| 3927 | |
| 3928 | # define SM_OTHER_REGEX (SvROK(Other) \ |
| 3929 | && (SvTYPE(SvRV(Other)) == SVt_REGEXP) \ |
| 3930 | && (other_regex = (REGEXP*) SvRV(Other))) |
| 3931 | |
| 3932 | |
| 3933 | # define SM_SEEN_THIS(sv) hv_exists_ent(seen_this, \ |
| 3934 | sv_2mortal(newSViv(PTR2IV(sv))), 0) |
| 3935 | |
| 3936 | # define SM_SEEN_OTHER(sv) hv_exists_ent(seen_other, \ |
| 3937 | sv_2mortal(newSViv(PTR2IV(sv))), 0) |
| 3938 | |
| 3939 | tryAMAGICbinSET(smart, 0); |
| 3940 | |
| 3941 | SP -= 2; /* Pop the values */ |
| 3942 | |
| 3943 | /* Take care only to invoke mg_get() once for each argument. |
| 3944 | * Currently we do this by copying the SV if it's magical. */ |
| 3945 | if (d) { |
| 3946 | if (SvGMAGICAL(d)) |
| 3947 | d = sv_mortalcopy(d); |
| 3948 | } |
| 3949 | else |
| 3950 | d = &PL_sv_undef; |
| 3951 | |
| 3952 | assert(e); |
| 3953 | if (SvGMAGICAL(e)) |
| 3954 | e = sv_mortalcopy(e); |
| 3955 | |
| 3956 | if (SM_CV_NEP) { |
| 3957 | I32 c; |
| 3958 | |
| 3959 | if ( SM_OTHER_REF(PVCV) && NOT_EMPTY_PROTO(SvRV(Other)) ) |
| 3960 | { |
| 3961 | if (This == SvRV(Other)) |
| 3962 | RETPUSHYES; |
| 3963 | else |
| 3964 | RETPUSHNO; |
| 3965 | } |
| 3966 | |
| 3967 | ENTER; |
| 3968 | SAVETMPS; |
| 3969 | PUSHMARK(SP); |
| 3970 | PUSHs(Other); |
| 3971 | PUTBACK; |
| 3972 | c = call_sv(This, G_SCALAR); |
| 3973 | SPAGAIN; |
| 3974 | if (c == 0) |
| 3975 | PUSHs(&PL_sv_no); |
| 3976 | else if (SvTEMP(TOPs)) |
| 3977 | SvREFCNT_inc_void(TOPs); |
| 3978 | FREETMPS; |
| 3979 | LEAVE; |
| 3980 | RETURN; |
| 3981 | } |
| 3982 | else if (SM_REF(PVHV)) { |
| 3983 | if (SM_OTHER_REF(PVHV)) { |
| 3984 | /* Check that the key-sets are identical */ |
| 3985 | HE *he; |
| 3986 | HV *other_hv = (HV *) SvRV(Other); |
| 3987 | bool tied = FALSE; |
| 3988 | bool other_tied = FALSE; |
| 3989 | U32 this_key_count = 0, |
| 3990 | other_key_count = 0; |
| 3991 | |
| 3992 | /* Tied hashes don't know how many keys they have. */ |
| 3993 | if (SvTIED_mg(This, PERL_MAGIC_tied)) { |
| 3994 | tied = TRUE; |
| 3995 | } |
| 3996 | else if (SvTIED_mg((SV *) other_hv, PERL_MAGIC_tied)) { |
| 3997 | HV * const temp = other_hv; |
| 3998 | other_hv = (HV *) This; |
| 3999 | This = (SV *) temp; |
| 4000 | tied = TRUE; |
| 4001 | } |
| 4002 | if (SvTIED_mg((SV *) other_hv, PERL_MAGIC_tied)) |
| 4003 | other_tied = TRUE; |
| 4004 | |
| 4005 | if (!tied && HvUSEDKEYS((HV *) This) != HvUSEDKEYS(other_hv)) |
| 4006 | RETPUSHNO; |
| 4007 | |
| 4008 | /* The hashes have the same number of keys, so it suffices |
| 4009 | to check that one is a subset of the other. */ |
| 4010 | (void) hv_iterinit((HV *) This); |
| 4011 | while ( (he = hv_iternext((HV *) This)) ) { |
| 4012 | I32 key_len; |
| 4013 | char * const key = hv_iterkey(he, &key_len); |
| 4014 | |
| 4015 | ++ this_key_count; |
| 4016 | |
| 4017 | if(!hv_exists(other_hv, key, key_len)) { |
| 4018 | (void) hv_iterinit((HV *) This); /* reset iterator */ |
| 4019 | RETPUSHNO; |
| 4020 | } |
| 4021 | } |
| 4022 | |
| 4023 | if (other_tied) { |
| 4024 | (void) hv_iterinit(other_hv); |
| 4025 | while ( hv_iternext(other_hv) ) |
| 4026 | ++other_key_count; |
| 4027 | } |
| 4028 | else |
| 4029 | other_key_count = HvUSEDKEYS(other_hv); |
| 4030 | |
| 4031 | if (this_key_count != other_key_count) |
| 4032 | RETPUSHNO; |
| 4033 | else |
| 4034 | RETPUSHYES; |
| 4035 | } |
| 4036 | else if (SM_OTHER_REF(PVAV)) { |
| 4037 | AV * const other_av = (AV *) SvRV(Other); |
| 4038 | const I32 other_len = av_len(other_av) + 1; |
| 4039 | I32 i; |
| 4040 | |
| 4041 | for (i = 0; i < other_len; ++i) { |
| 4042 | SV ** const svp = av_fetch(other_av, i, FALSE); |
| 4043 | char *key; |
| 4044 | STRLEN key_len; |
| 4045 | |
| 4046 | if (svp) { /* ??? When can this not happen? */ |
| 4047 | key = SvPV(*svp, key_len); |
| 4048 | if (hv_exists((HV *) This, key, key_len)) |
| 4049 | RETPUSHYES; |
| 4050 | } |
| 4051 | } |
| 4052 | RETPUSHNO; |
| 4053 | } |
| 4054 | else if (SM_OTHER_REGEX) { |
| 4055 | PMOP * const matcher = make_matcher(other_regex); |
| 4056 | HE *he; |
| 4057 | |
| 4058 | (void) hv_iterinit((HV *) This); |
| 4059 | while ( (he = hv_iternext((HV *) This)) ) { |
| 4060 | if (matcher_matches_sv(matcher, hv_iterkeysv(he))) { |
| 4061 | (void) hv_iterinit((HV *) This); |
| 4062 | destroy_matcher(matcher); |
| 4063 | RETPUSHYES; |
| 4064 | } |
| 4065 | } |
| 4066 | destroy_matcher(matcher); |
| 4067 | RETPUSHNO; |
| 4068 | } |
| 4069 | else { |
| 4070 | if (hv_exists_ent((HV *) This, Other, 0)) |
| 4071 | RETPUSHYES; |
| 4072 | else |
| 4073 | RETPUSHNO; |
| 4074 | } |
| 4075 | } |
| 4076 | else if (SM_REF(PVAV)) { |
| 4077 | if (SM_OTHER_REF(PVAV)) { |
| 4078 | AV *other_av = (AV *) SvRV(Other); |
| 4079 | if (av_len((AV *) This) != av_len(other_av)) |
| 4080 | RETPUSHNO; |
| 4081 | else { |
| 4082 | I32 i; |
| 4083 | const I32 other_len = av_len(other_av); |
| 4084 | |
| 4085 | if (NULL == seen_this) { |
| 4086 | seen_this = newHV(); |
| 4087 | (void) sv_2mortal((SV *) seen_this); |
| 4088 | } |
| 4089 | if (NULL == seen_other) { |
| 4090 | seen_this = newHV(); |
| 4091 | (void) sv_2mortal((SV *) seen_other); |
| 4092 | } |
| 4093 | for(i = 0; i <= other_len; ++i) { |
| 4094 | SV * const * const this_elem = av_fetch((AV *)This, i, FALSE); |
| 4095 | SV * const * const other_elem = av_fetch(other_av, i, FALSE); |
| 4096 | |
| 4097 | if (!this_elem || !other_elem) { |
| 4098 | if (this_elem || other_elem) |
| 4099 | RETPUSHNO; |
| 4100 | } |
| 4101 | else if (SM_SEEN_THIS(*this_elem) |
| 4102 | || SM_SEEN_OTHER(*other_elem)) |
| 4103 | { |
| 4104 | if (*this_elem != *other_elem) |
| 4105 | RETPUSHNO; |
| 4106 | } |
| 4107 | else { |
| 4108 | (void)hv_store_ent(seen_this, |
| 4109 | sv_2mortal(newSViv(PTR2IV(*this_elem))), |
| 4110 | &PL_sv_undef, 0); |
| 4111 | (void)hv_store_ent(seen_other, |
| 4112 | sv_2mortal(newSViv(PTR2IV(*other_elem))), |
| 4113 | &PL_sv_undef, 0); |
| 4114 | PUSHs(*this_elem); |
| 4115 | PUSHs(*other_elem); |
| 4116 | |
| 4117 | PUTBACK; |
| 4118 | (void) do_smartmatch(seen_this, seen_other); |
| 4119 | SPAGAIN; |
| 4120 | |
| 4121 | if (!SvTRUEx(POPs)) |
| 4122 | RETPUSHNO; |
| 4123 | } |
| 4124 | } |
| 4125 | RETPUSHYES; |
| 4126 | } |
| 4127 | } |
| 4128 | else if (SM_OTHER_REGEX) { |
| 4129 | PMOP * const matcher = make_matcher(other_regex); |
| 4130 | const I32 this_len = av_len((AV *) This); |
| 4131 | I32 i; |
| 4132 | |
| 4133 | for(i = 0; i <= this_len; ++i) { |
| 4134 | SV * const * const svp = av_fetch((AV *)This, i, FALSE); |
| 4135 | if (svp && matcher_matches_sv(matcher, *svp)) { |
| 4136 | destroy_matcher(matcher); |
| 4137 | RETPUSHYES; |
| 4138 | } |
| 4139 | } |
| 4140 | destroy_matcher(matcher); |
| 4141 | RETPUSHNO; |
| 4142 | } |
| 4143 | else if (SvIOK(Other) || SvNOK(Other)) { |
| 4144 | I32 i; |
| 4145 | |
| 4146 | for(i = 0; i <= AvFILL((AV *) This); ++i) { |
| 4147 | SV * const * const svp = av_fetch((AV *)This, i, FALSE); |
| 4148 | if (!svp) |
| 4149 | continue; |
| 4150 | |
| 4151 | PUSHs(Other); |
| 4152 | PUSHs(*svp); |
| 4153 | PUTBACK; |
| 4154 | if (CopHINTS_get(PL_curcop) & HINT_INTEGER) |
| 4155 | (void) pp_i_eq(); |
| 4156 | else |
| 4157 | (void) pp_eq(); |
| 4158 | SPAGAIN; |
| 4159 | if (SvTRUEx(POPs)) |
| 4160 | RETPUSHYES; |
| 4161 | } |
| 4162 | RETPUSHNO; |
| 4163 | } |
| 4164 | else if (SvPOK(Other)) { |
| 4165 | const I32 this_len = av_len((AV *) This); |
| 4166 | I32 i; |
| 4167 | |
| 4168 | for(i = 0; i <= this_len; ++i) { |
| 4169 | SV * const * const svp = av_fetch((AV *)This, i, FALSE); |
| 4170 | if (!svp) |
| 4171 | continue; |
| 4172 | |
| 4173 | PUSHs(Other); |
| 4174 | PUSHs(*svp); |
| 4175 | PUTBACK; |
| 4176 | (void) pp_seq(); |
| 4177 | SPAGAIN; |
| 4178 | if (SvTRUEx(POPs)) |
| 4179 | RETPUSHYES; |
| 4180 | } |
| 4181 | RETPUSHNO; |
| 4182 | } |
| 4183 | } |
| 4184 | else if (!SvOK(d) || !SvOK(e)) { |
| 4185 | if (!SvOK(d) && !SvOK(e)) |
| 4186 | RETPUSHYES; |
| 4187 | else |
| 4188 | RETPUSHNO; |
| 4189 | } |
| 4190 | else if (SM_REGEX) { |
| 4191 | PMOP * const matcher = make_matcher(this_regex); |
| 4192 | |
| 4193 | PUTBACK; |
| 4194 | PUSHs(matcher_matches_sv(matcher, Other) |
| 4195 | ? &PL_sv_yes |
| 4196 | : &PL_sv_no); |
| 4197 | destroy_matcher(matcher); |
| 4198 | RETURN; |
| 4199 | } |
| 4200 | else if (SM_REF(PVCV)) { |
| 4201 | I32 c; |
| 4202 | /* This must be a null-prototyped sub, because we |
| 4203 | already checked for the other kind. */ |
| 4204 | |
| 4205 | ENTER; |
| 4206 | SAVETMPS; |
| 4207 | PUSHMARK(SP); |
| 4208 | PUTBACK; |
| 4209 | c = call_sv(This, G_SCALAR); |
| 4210 | SPAGAIN; |
| 4211 | if (c == 0) |
| 4212 | PUSHs(&PL_sv_undef); |
| 4213 | else if (SvTEMP(TOPs)) |
| 4214 | SvREFCNT_inc_void(TOPs); |
| 4215 | |
| 4216 | if (SM_OTHER_REF(PVCV)) { |
| 4217 | /* This one has to be null-proto'd too. |
| 4218 | Call both of 'em, and compare the results */ |
| 4219 | PUSHMARK(SP); |
| 4220 | c = call_sv(SvRV(Other), G_SCALAR); |
| 4221 | SPAGAIN; |
| 4222 | if (c == 0) |
| 4223 | PUSHs(&PL_sv_undef); |
| 4224 | else if (SvTEMP(TOPs)) |
| 4225 | SvREFCNT_inc_void(TOPs); |
| 4226 | FREETMPS; |
| 4227 | LEAVE; |
| 4228 | PUTBACK; |
| 4229 | return pp_eq(); |
| 4230 | } |
| 4231 | |
| 4232 | FREETMPS; |
| 4233 | LEAVE; |
| 4234 | RETURN; |
| 4235 | } |
| 4236 | else if ( ((SvIOK(d) || SvNOK(d)) && (This = d) && (Other = e)) |
| 4237 | || ((SvIOK(e) || SvNOK(e)) && (This = e) && (Other = d)) ) |
| 4238 | { |
| 4239 | if (SvPOK(Other) && !looks_like_number(Other)) { |
| 4240 | /* String comparison */ |
| 4241 | PUSHs(d); PUSHs(e); |
| 4242 | PUTBACK; |
| 4243 | return pp_seq(); |
| 4244 | } |
| 4245 | /* Otherwise, numeric comparison */ |
| 4246 | PUSHs(d); PUSHs(e); |
| 4247 | PUTBACK; |
| 4248 | if (CopHINTS_get(PL_curcop) & HINT_INTEGER) |
| 4249 | (void) pp_i_eq(); |
| 4250 | else |
| 4251 | (void) pp_eq(); |
| 4252 | SPAGAIN; |
| 4253 | if (SvTRUEx(POPs)) |
| 4254 | RETPUSHYES; |
| 4255 | else |
| 4256 | RETPUSHNO; |
| 4257 | } |
| 4258 | |
| 4259 | /* As a last resort, use string comparison */ |
| 4260 | PUSHs(d); PUSHs(e); |
| 4261 | PUTBACK; |
| 4262 | return pp_seq(); |
| 4263 | } |
| 4264 | |
| 4265 | PP(pp_enterwhen) |
| 4266 | { |
| 4267 | dVAR; dSP; |
| 4268 | register PERL_CONTEXT *cx; |
| 4269 | const I32 gimme = GIMME_V; |
| 4270 | |
| 4271 | /* This is essentially an optimization: if the match |
| 4272 | fails, we don't want to push a context and then |
| 4273 | pop it again right away, so we skip straight |
| 4274 | to the op that follows the leavewhen. |
| 4275 | */ |
| 4276 | if ((0 == (PL_op->op_flags & OPf_SPECIAL)) && !SvTRUEx(POPs)) |
| 4277 | return cLOGOP->op_other->op_next; |
| 4278 | |
| 4279 | ENTER; |
| 4280 | SAVETMPS; |
| 4281 | |
| 4282 | PUSHBLOCK(cx, CXt_WHEN, SP); |
| 4283 | PUSHWHEN(cx); |
| 4284 | |
| 4285 | RETURN; |
| 4286 | } |
| 4287 | |
| 4288 | PP(pp_leavewhen) |
| 4289 | { |
| 4290 | dVAR; dSP; |
| 4291 | register PERL_CONTEXT *cx; |
| 4292 | I32 gimme; |
| 4293 | SV **newsp; |
| 4294 | PMOP *newpm; |
| 4295 | |
| 4296 | POPBLOCK(cx,newpm); |
| 4297 | assert(CxTYPE(cx) == CXt_WHEN); |
| 4298 | |
| 4299 | SP = newsp; |
| 4300 | PUTBACK; |
| 4301 | |
| 4302 | PL_curpm = newpm; /* pop $1 et al */ |
| 4303 | |
| 4304 | LEAVE; |
| 4305 | return NORMAL; |
| 4306 | } |
| 4307 | |
| 4308 | PP(pp_continue) |
| 4309 | { |
| 4310 | dVAR; |
| 4311 | I32 cxix; |
| 4312 | register PERL_CONTEXT *cx; |
| 4313 | I32 inner; |
| 4314 | |
| 4315 | cxix = dopoptowhen(cxstack_ix); |
| 4316 | if (cxix < 0) |
| 4317 | DIE(aTHX_ "Can't \"continue\" outside a when block"); |
| 4318 | if (cxix < cxstack_ix) |
| 4319 | dounwind(cxix); |
| 4320 | |
| 4321 | /* clear off anything above the scope we're re-entering */ |
| 4322 | inner = PL_scopestack_ix; |
| 4323 | TOPBLOCK(cx); |
| 4324 | if (PL_scopestack_ix < inner) |
| 4325 | leave_scope(PL_scopestack[PL_scopestack_ix]); |
| 4326 | PL_curcop = cx->blk_oldcop; |
| 4327 | return cx->blk_givwhen.leave_op; |
| 4328 | } |
| 4329 | |
| 4330 | PP(pp_break) |
| 4331 | { |
| 4332 | dVAR; |
| 4333 | I32 cxix; |
| 4334 | register PERL_CONTEXT *cx; |
| 4335 | I32 inner; |
| 4336 | |
| 4337 | cxix = dopoptogiven(cxstack_ix); |
| 4338 | if (cxix < 0) { |
| 4339 | if (PL_op->op_flags & OPf_SPECIAL) |
| 4340 | DIE(aTHX_ "Can't use when() outside a topicalizer"); |
| 4341 | else |
| 4342 | DIE(aTHX_ "Can't \"break\" outside a given block"); |
| 4343 | } |
| 4344 | if (CxFOREACH(&cxstack[cxix]) && (0 == (PL_op->op_flags & OPf_SPECIAL))) |
| 4345 | DIE(aTHX_ "Can't \"break\" in a loop topicalizer"); |
| 4346 | |
| 4347 | if (cxix < cxstack_ix) |
| 4348 | dounwind(cxix); |
| 4349 | |
| 4350 | /* clear off anything above the scope we're re-entering */ |
| 4351 | inner = PL_scopestack_ix; |
| 4352 | TOPBLOCK(cx); |
| 4353 | if (PL_scopestack_ix < inner) |
| 4354 | leave_scope(PL_scopestack[PL_scopestack_ix]); |
| 4355 | PL_curcop = cx->blk_oldcop; |
| 4356 | |
| 4357 | if (CxFOREACH(cx)) |
| 4358 | return CX_LOOP_NEXTOP_GET(cx); |
| 4359 | else |
| 4360 | return cx->blk_givwhen.leave_op; |
| 4361 | } |
| 4362 | |
| 4363 | STATIC OP * |
| 4364 | S_doparseform(pTHX_ SV *sv) |
| 4365 | { |
| 4366 | STRLEN len; |
| 4367 | register char *s = SvPV_force(sv, len); |
| 4368 | register char * const send = s + len; |
| 4369 | register char *base = NULL; |
| 4370 | register I32 skipspaces = 0; |
| 4371 | bool noblank = FALSE; |
| 4372 | bool repeat = FALSE; |
| 4373 | bool postspace = FALSE; |
| 4374 | U32 *fops; |
| 4375 | register U32 *fpc; |
| 4376 | U32 *linepc = NULL; |
| 4377 | register I32 arg; |
| 4378 | bool ischop; |
| 4379 | bool unchopnum = FALSE; |
| 4380 | int maxops = 12; /* FF_LINEMARK + FF_END + 10 (\0 without preceding \n) */ |
| 4381 | |
| 4382 | if (len == 0) |
| 4383 | Perl_croak(aTHX_ "Null picture in formline"); |
| 4384 | |
| 4385 | /* estimate the buffer size needed */ |
| 4386 | for (base = s; s <= send; s++) { |
| 4387 | if (*s == '\n' || *s == '@' || *s == '^') |
| 4388 | maxops += 10; |
| 4389 | } |
| 4390 | s = base; |
| 4391 | base = NULL; |
| 4392 | |
| 4393 | Newx(fops, maxops, U32); |
| 4394 | fpc = fops; |
| 4395 | |
| 4396 | if (s < send) { |
| 4397 | linepc = fpc; |
| 4398 | *fpc++ = FF_LINEMARK; |
| 4399 | noblank = repeat = FALSE; |
| 4400 | base = s; |
| 4401 | } |
| 4402 | |
| 4403 | while (s <= send) { |
| 4404 | switch (*s++) { |
| 4405 | default: |
| 4406 | skipspaces = 0; |
| 4407 | continue; |
| 4408 | |
| 4409 | case '~': |
| 4410 | if (*s == '~') { |
| 4411 | repeat = TRUE; |
| 4412 | *s = ' '; |
| 4413 | } |
| 4414 | noblank = TRUE; |
| 4415 | s[-1] = ' '; |
| 4416 | /* FALL THROUGH */ |
| 4417 | case ' ': case '\t': |
| 4418 | skipspaces++; |
| 4419 | continue; |
| 4420 | case 0: |
| 4421 | if (s < send) { |
| 4422 | skipspaces = 0; |
| 4423 | continue; |
| 4424 | } /* else FALL THROUGH */ |
| 4425 | case '\n': |
| 4426 | arg = s - base; |
| 4427 | skipspaces++; |
| 4428 | arg -= skipspaces; |
| 4429 | if (arg) { |
| 4430 | if (postspace) |
| 4431 | *fpc++ = FF_SPACE; |
| 4432 | *fpc++ = FF_LITERAL; |
| 4433 | *fpc++ = (U16)arg; |
| 4434 | } |
| 4435 | postspace = FALSE; |
| 4436 | if (s <= send) |
| 4437 | skipspaces--; |
| 4438 | if (skipspaces) { |
| 4439 | *fpc++ = FF_SKIP; |
| 4440 | *fpc++ = (U16)skipspaces; |
| 4441 | } |
| 4442 | skipspaces = 0; |
| 4443 | if (s <= send) |
| 4444 | *fpc++ = FF_NEWLINE; |
| 4445 | if (noblank) { |
| 4446 | *fpc++ = FF_BLANK; |
| 4447 | if (repeat) |
| 4448 | arg = fpc - linepc + 1; |
| 4449 | else |
| 4450 | arg = 0; |
| 4451 | *fpc++ = (U16)arg; |
| 4452 | } |
| 4453 | if (s < send) { |
| 4454 | linepc = fpc; |
| 4455 | *fpc++ = FF_LINEMARK; |
| 4456 | noblank = repeat = FALSE; |
| 4457 | base = s; |
| 4458 | } |
| 4459 | else |
| 4460 | s++; |
| 4461 | continue; |
| 4462 | |
| 4463 | case '@': |
| 4464 | case '^': |
| 4465 | ischop = s[-1] == '^'; |
| 4466 | |
| 4467 | if (postspace) { |
| 4468 | *fpc++ = FF_SPACE; |
| 4469 | postspace = FALSE; |
| 4470 | } |
| 4471 | arg = (s - base) - 1; |
| 4472 | if (arg) { |
| 4473 | *fpc++ = FF_LITERAL; |
| 4474 | *fpc++ = (U16)arg; |
| 4475 | } |
| 4476 | |
| 4477 | base = s - 1; |
| 4478 | *fpc++ = FF_FETCH; |
| 4479 | if (*s == '*') { |
| 4480 | s++; |
| 4481 | *fpc++ = 2; /* skip the @* or ^* */ |
| 4482 | if (ischop) { |
| 4483 | *fpc++ = FF_LINESNGL; |
| 4484 | *fpc++ = FF_CHOP; |
| 4485 | } else |
| 4486 | *fpc++ = FF_LINEGLOB; |
| 4487 | } |
| 4488 | else if (*s == '#' || (*s == '.' && s[1] == '#')) { |
| 4489 | arg = ischop ? 512 : 0; |
| 4490 | base = s - 1; |
| 4491 | while (*s == '#') |
| 4492 | s++; |
| 4493 | if (*s == '.') { |
| 4494 | const char * const f = ++s; |
| 4495 | while (*s == '#') |
| 4496 | s++; |
| 4497 | arg |= 256 + (s - f); |
| 4498 | } |
| 4499 | *fpc++ = s - base; /* fieldsize for FETCH */ |
| 4500 | *fpc++ = FF_DECIMAL; |
| 4501 | *fpc++ = (U16)arg; |
| 4502 | unchopnum |= ! ischop; |
| 4503 | } |
| 4504 | else if (*s == '0' && s[1] == '#') { /* Zero padded decimals */ |
| 4505 | arg = ischop ? 512 : 0; |
| 4506 | base = s - 1; |
| 4507 | s++; /* skip the '0' first */ |
| 4508 | while (*s == '#') |
| 4509 | s++; |
| 4510 | if (*s == '.') { |
| 4511 | const char * const f = ++s; |
| 4512 | while (*s == '#') |
| 4513 | s++; |
| 4514 | arg |= 256 + (s - f); |
| 4515 | } |
| 4516 | *fpc++ = s - base; /* fieldsize for FETCH */ |
| 4517 | *fpc++ = FF_0DECIMAL; |
| 4518 | *fpc++ = (U16)arg; |
| 4519 | unchopnum |= ! ischop; |
| 4520 | } |
| 4521 | else { |
| 4522 | I32 prespace = 0; |
| 4523 | bool ismore = FALSE; |
| 4524 | |
| 4525 | if (*s == '>') { |
| 4526 | while (*++s == '>') ; |
| 4527 | prespace = FF_SPACE; |
| 4528 | } |
| 4529 | else if (*s == '|') { |
| 4530 | while (*++s == '|') ; |
| 4531 | prespace = FF_HALFSPACE; |
| 4532 | postspace = TRUE; |
| 4533 | } |
| 4534 | else { |
| 4535 | if (*s == '<') |
| 4536 | while (*++s == '<') ; |
| 4537 | postspace = TRUE; |
| 4538 | } |
| 4539 | if (*s == '.' && s[1] == '.' && s[2] == '.') { |
| 4540 | s += 3; |
| 4541 | ismore = TRUE; |
| 4542 | } |
| 4543 | *fpc++ = s - base; /* fieldsize for FETCH */ |
| 4544 | |
| 4545 | *fpc++ = ischop ? FF_CHECKCHOP : FF_CHECKNL; |
| 4546 | |
| 4547 | if (prespace) |
| 4548 | *fpc++ = (U16)prespace; |
| 4549 | *fpc++ = FF_ITEM; |
| 4550 | if (ismore) |
| 4551 | *fpc++ = FF_MORE; |
| 4552 | if (ischop) |
| 4553 | *fpc++ = FF_CHOP; |
| 4554 | } |
| 4555 | base = s; |
| 4556 | skipspaces = 0; |
| 4557 | continue; |
| 4558 | } |
| 4559 | } |
| 4560 | *fpc++ = FF_END; |
| 4561 | |
| 4562 | assert (fpc <= fops + maxops); /* ensure our buffer estimate was valid */ |
| 4563 | arg = fpc - fops; |
| 4564 | { /* need to jump to the next word */ |
| 4565 | int z; |
| 4566 | z = WORD_ALIGN - SvCUR(sv) % WORD_ALIGN; |
| 4567 | SvGROW(sv, SvCUR(sv) + z + arg * sizeof(U32) + 4); |
| 4568 | s = SvPVX(sv) + SvCUR(sv) + z; |
| 4569 | } |
| 4570 | Copy(fops, s, arg, U32); |
| 4571 | Safefree(fops); |
| 4572 | sv_magic(sv, NULL, PERL_MAGIC_fm, NULL, 0); |
| 4573 | SvCOMPILED_on(sv); |
| 4574 | |
| 4575 | if (unchopnum && repeat) |
| 4576 | DIE(aTHX_ "Repeated format line will never terminate (~~ and @#)"); |
| 4577 | return 0; |
| 4578 | } |
| 4579 | |
| 4580 | |
| 4581 | STATIC bool |
| 4582 | S_num_overflow(NV value, I32 fldsize, I32 frcsize) |
| 4583 | { |
| 4584 | /* Can value be printed in fldsize chars, using %*.*f ? */ |
| 4585 | NV pwr = 1; |
| 4586 | NV eps = 0.5; |
| 4587 | bool res = FALSE; |
| 4588 | int intsize = fldsize - (value < 0 ? 1 : 0); |
| 4589 | |
| 4590 | if (frcsize & 256) |
| 4591 | intsize--; |
| 4592 | frcsize &= 255; |
| 4593 | intsize -= frcsize; |
| 4594 | |
| 4595 | while (intsize--) pwr *= 10.0; |
| 4596 | while (frcsize--) eps /= 10.0; |
| 4597 | |
| 4598 | if( value >= 0 ){ |
| 4599 | if (value + eps >= pwr) |
| 4600 | res = TRUE; |
| 4601 | } else { |
| 4602 | if (value - eps <= -pwr) |
| 4603 | res = TRUE; |
| 4604 | } |
| 4605 | return res; |
| 4606 | } |
| 4607 | |
| 4608 | static I32 |
| 4609 | S_run_user_filter(pTHX_ int idx, SV *buf_sv, int maxlen) |
| 4610 | { |
| 4611 | dVAR; |
| 4612 | SV * const datasv = FILTER_DATA(idx); |
| 4613 | const int filter_has_file = IoLINES(datasv); |
| 4614 | SV * const filter_state = (SV *)IoTOP_GV(datasv); |
| 4615 | SV * const filter_sub = (SV *)IoBOTTOM_GV(datasv); |
| 4616 | int status = 0; |
| 4617 | SV *upstream; |
| 4618 | STRLEN got_len; |
| 4619 | const char *got_p = NULL; |
| 4620 | const char *prune_from = NULL; |
| 4621 | bool read_from_cache = FALSE; |
| 4622 | STRLEN umaxlen; |
| 4623 | |
| 4624 | assert(maxlen >= 0); |
| 4625 | umaxlen = maxlen; |
| 4626 | |
| 4627 | /* I was having segfault trouble under Linux 2.2.5 after a |
| 4628 | parse error occured. (Had to hack around it with a test |
| 4629 | for PL_parser->error_count == 0.) Solaris doesn't segfault -- |
| 4630 | not sure where the trouble is yet. XXX */ |
| 4631 | |
| 4632 | if (IoFMT_GV(datasv)) { |
| 4633 | SV *const cache = (SV *)IoFMT_GV(datasv); |
| 4634 | if (SvOK(cache)) { |
| 4635 | STRLEN cache_len; |
| 4636 | const char *cache_p = SvPV(cache, cache_len); |
| 4637 | STRLEN take = 0; |
| 4638 | |
| 4639 | if (umaxlen) { |
| 4640 | /* Running in block mode and we have some cached data already. |
| 4641 | */ |
| 4642 | if (cache_len >= umaxlen) { |
| 4643 | /* In fact, so much data we don't even need to call |
| 4644 | filter_read. */ |
| 4645 | take = umaxlen; |
| 4646 | } |
| 4647 | } else { |
| 4648 | const char *const first_nl = |
| 4649 | (const char *)memchr(cache_p, '\n', cache_len); |
| 4650 | if (first_nl) { |
| 4651 | take = first_nl + 1 - cache_p; |
| 4652 | } |
| 4653 | } |
| 4654 | if (take) { |
| 4655 | sv_catpvn(buf_sv, cache_p, take); |
| 4656 | sv_chop(cache, cache_p + take); |
| 4657 | /* Definately not EOF */ |
| 4658 | return 1; |
| 4659 | } |
| 4660 | |
| 4661 | sv_catsv(buf_sv, cache); |
| 4662 | if (umaxlen) { |
| 4663 | umaxlen -= cache_len; |
| 4664 | } |
| 4665 | SvOK_off(cache); |
| 4666 | read_from_cache = TRUE; |
| 4667 | } |
| 4668 | } |
| 4669 | |
| 4670 | /* Filter API says that the filter appends to the contents of the buffer. |
| 4671 | Usually the buffer is "", so the details don't matter. But if it's not, |
| 4672 | then clearly what it contains is already filtered by this filter, so we |
| 4673 | don't want to pass it in a second time. |
| 4674 | I'm going to use a mortal in case the upstream filter croaks. */ |
| 4675 | upstream = ((SvOK(buf_sv) && sv_len(buf_sv)) || SvGMAGICAL(buf_sv)) |
| 4676 | ? sv_newmortal() : buf_sv; |
| 4677 | SvUPGRADE(upstream, SVt_PV); |
| 4678 | |
| 4679 | if (filter_has_file) { |
| 4680 | status = FILTER_READ(idx+1, upstream, 0); |
| 4681 | } |
| 4682 | |
| 4683 | if (filter_sub && status >= 0) { |
| 4684 | dSP; |
| 4685 | int count; |
| 4686 | |
| 4687 | ENTER; |
| 4688 | SAVE_DEFSV; |
| 4689 | SAVETMPS; |
| 4690 | EXTEND(SP, 2); |
| 4691 | |
| 4692 | DEFSV = upstream; |
| 4693 | PUSHMARK(SP); |
| 4694 | mPUSHi(0); |
| 4695 | if (filter_state) { |
| 4696 | PUSHs(filter_state); |
| 4697 | } |
| 4698 | PUTBACK; |
| 4699 | count = call_sv(filter_sub, G_SCALAR); |
| 4700 | SPAGAIN; |
| 4701 | |
| 4702 | if (count > 0) { |
| 4703 | SV *out = POPs; |
| 4704 | if (SvOK(out)) { |
| 4705 | status = SvIV(out); |
| 4706 | } |
| 4707 | } |
| 4708 | |
| 4709 | PUTBACK; |
| 4710 | FREETMPS; |
| 4711 | LEAVE; |
| 4712 | } |
| 4713 | |
| 4714 | if(SvOK(upstream)) { |
| 4715 | got_p = SvPV(upstream, got_len); |
| 4716 | if (umaxlen) { |
| 4717 | if (got_len > umaxlen) { |
| 4718 | prune_from = got_p + umaxlen; |
| 4719 | } |
| 4720 | } else { |
| 4721 | const char *const first_nl = |
| 4722 | (const char *)memchr(got_p, '\n', got_len); |
| 4723 | if (first_nl && first_nl + 1 < got_p + got_len) { |
| 4724 | /* There's a second line here... */ |
| 4725 | prune_from = first_nl + 1; |
| 4726 | } |
| 4727 | } |
| 4728 | } |
| 4729 | if (prune_from) { |
| 4730 | /* Oh. Too long. Stuff some in our cache. */ |
| 4731 | STRLEN cached_len = got_p + got_len - prune_from; |
| 4732 | SV *cache = (SV *)IoFMT_GV(datasv); |
| 4733 | |
| 4734 | if (!cache) { |
| 4735 | IoFMT_GV(datasv) = (GV*) (cache = newSV(got_len - umaxlen)); |
| 4736 | } else if (SvOK(cache)) { |
| 4737 | /* Cache should be empty. */ |
| 4738 | assert(!SvCUR(cache)); |
| 4739 | } |
| 4740 | |
| 4741 | sv_setpvn(cache, prune_from, cached_len); |
| 4742 | /* If you ask for block mode, you may well split UTF-8 characters. |
| 4743 | "If it breaks, you get to keep both parts" |
| 4744 | (Your code is broken if you don't put them back together again |
| 4745 | before something notices.) */ |
| 4746 | if (SvUTF8(upstream)) { |
| 4747 | SvUTF8_on(cache); |
| 4748 | } |
| 4749 | SvCUR_set(upstream, got_len - cached_len); |
| 4750 | /* Can't yet be EOF */ |
| 4751 | if (status == 0) |
| 4752 | status = 1; |
| 4753 | } |
| 4754 | |
| 4755 | /* If they are at EOF but buf_sv has something in it, then they may never |
| 4756 | have touched the SV upstream, so it may be undefined. If we naively |
| 4757 | concatenate it then we get a warning about use of uninitialised value. |
| 4758 | */ |
| 4759 | if (upstream != buf_sv && (SvOK(upstream) || SvGMAGICAL(upstream))) { |
| 4760 | sv_catsv(buf_sv, upstream); |
| 4761 | } |
| 4762 | |
| 4763 | if (status <= 0) { |
| 4764 | IoLINES(datasv) = 0; |
| 4765 | SvREFCNT_dec(IoFMT_GV(datasv)); |
| 4766 | if (filter_state) { |
| 4767 | SvREFCNT_dec(filter_state); |
| 4768 | IoTOP_GV(datasv) = NULL; |
| 4769 | } |
| 4770 | if (filter_sub) { |
| 4771 | SvREFCNT_dec(filter_sub); |
| 4772 | IoBOTTOM_GV(datasv) = NULL; |
| 4773 | } |
| 4774 | filter_del(S_run_user_filter); |
| 4775 | } |
| 4776 | if (status == 0 && read_from_cache) { |
| 4777 | /* If we read some data from the cache (and by getting here it implies |
| 4778 | that we emptied the cache) then we aren't yet at EOF, and mustn't |
| 4779 | report that to our caller. */ |
| 4780 | return 1; |
| 4781 | } |
| 4782 | return status; |
| 4783 | } |
| 4784 | |
| 4785 | /* perhaps someone can come up with a better name for |
| 4786 | this? it is not really "absolute", per se ... */ |
| 4787 | static bool |
| 4788 | S_path_is_absolute(const char *name) |
| 4789 | { |
| 4790 | if (PERL_FILE_IS_ABSOLUTE(name) |
| 4791 | #ifdef MACOS_TRADITIONAL |
| 4792 | || (*name == ':') |
| 4793 | #else |
| 4794 | || (*name == '.' && (name[1] == '/' || |
| 4795 | (name[1] == '.' && name[2] == '/'))) |
| 4796 | #endif |
| 4797 | ) |
| 4798 | { |
| 4799 | return TRUE; |
| 4800 | } |
| 4801 | else |
| 4802 | return FALSE; |
| 4803 | } |
| 4804 | |
| 4805 | /* |
| 4806 | * Local variables: |
| 4807 | * c-indentation-style: bsd |
| 4808 | * c-basic-offset: 4 |
| 4809 | * indent-tabs-mode: t |
| 4810 | * End: |
| 4811 | * |
| 4812 | * ex: set ts=8 sts=4 sw=4 noet: |
| 4813 | */ |