| 1 | /* op.h |
| 2 | * |
| 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
| 4 | * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others |
| 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 | * The fields of BASEOP are: |
| 13 | * op_next Pointer to next ppcode to execute after this one. |
| 14 | * (Top level pre-grafted op points to first op, |
| 15 | * but this is replaced when op is grafted in, when |
| 16 | * this op will point to the real next op, and the new |
| 17 | * parent takes over role of remembering starting op.) |
| 18 | * op_ppaddr Pointer to current ppcode's function. |
| 19 | * op_type The type of the operation. |
| 20 | * op_opt Whether or not the op has been optimised by the |
| 21 | * peephole optimiser. |
| 22 | * |
| 23 | * See the comments in S_clear_yystack() for more |
| 24 | * details on the following three flags: |
| 25 | * |
| 26 | * op_latefree tell op_free() to clear this op (and free any kids) |
| 27 | * but not yet deallocate the struct. This means that |
| 28 | * the op may be safely op_free()d multiple times |
| 29 | * op_latefreed an op_latefree op has been op_free()d |
| 30 | * op_attached this op (sub)tree has been attached to a CV |
| 31 | * |
| 32 | * op_spare three spare bits! |
| 33 | * op_flags Flags common to all operations. See OPf_* below. |
| 34 | * op_private Flags peculiar to a particular operation (BUT, |
| 35 | * by default, set to the number of children until |
| 36 | * the operation is privatized by a check routine, |
| 37 | * which may or may not check number of children). |
| 38 | */ |
| 39 | |
| 40 | #define OPCODE U16 |
| 41 | |
| 42 | #ifdef PERL_MAD |
| 43 | # define MADPROP_IN_BASEOP MADPROP* op_madprop; |
| 44 | #else |
| 45 | # define MADPROP_IN_BASEOP |
| 46 | #endif |
| 47 | |
| 48 | typedef PERL_BITFIELD16 Optype; |
| 49 | |
| 50 | #ifdef BASEOP_DEFINITION |
| 51 | #define BASEOP BASEOP_DEFINITION |
| 52 | #else |
| 53 | #define BASEOP \ |
| 54 | OP* op_next; \ |
| 55 | OP* op_sibling; \ |
| 56 | OP* (CPERLscope(*op_ppaddr))(pTHX); \ |
| 57 | MADPROP_IN_BASEOP \ |
| 58 | PADOFFSET op_targ; \ |
| 59 | PERL_BITFIELD16 op_type:9; \ |
| 60 | PERL_BITFIELD16 op_opt:1; \ |
| 61 | PERL_BITFIELD16 op_latefree:1; \ |
| 62 | PERL_BITFIELD16 op_latefreed:1; \ |
| 63 | PERL_BITFIELD16 op_attached:1; \ |
| 64 | PERL_BITFIELD16 op_spare:3; \ |
| 65 | U8 op_flags; \ |
| 66 | U8 op_private; |
| 67 | #endif |
| 68 | |
| 69 | /* If op_type:9 is changed to :10, also change PUSHEVAL in cop.h. |
| 70 | Also, if the type of op_type is ever changed (e.g. to PERL_BITFIELD32) |
| 71 | then all the other bit-fields before/after it should change their |
| 72 | types too to let VC pack them into the same 4 byte integer.*/ |
| 73 | |
| 74 | #define OP_GIMME(op,dfl) \ |
| 75 | (((op)->op_flags & OPf_WANT) == OPf_WANT_VOID ? G_VOID : \ |
| 76 | ((op)->op_flags & OPf_WANT) == OPf_WANT_SCALAR ? G_SCALAR : \ |
| 77 | ((op)->op_flags & OPf_WANT) == OPf_WANT_LIST ? G_ARRAY : \ |
| 78 | dfl) |
| 79 | |
| 80 | #define OP_GIMME_REVERSE(flags) ((flags) & G_WANT) |
| 81 | |
| 82 | /* |
| 83 | =head1 "Gimme" Values |
| 84 | |
| 85 | =for apidoc Amn|U32|GIMME_V |
| 86 | The XSUB-writer's equivalent to Perl's C<wantarray>. Returns C<G_VOID>, |
| 87 | C<G_SCALAR> or C<G_ARRAY> for void, scalar or list context, |
| 88 | respectively. See L<perlcall> for a usage example. |
| 89 | |
| 90 | =for apidoc Amn|U32|GIMME |
| 91 | A backward-compatible version of C<GIMME_V> which can only return |
| 92 | C<G_SCALAR> or C<G_ARRAY>; in a void context, it returns C<G_SCALAR>. |
| 93 | Deprecated. Use C<GIMME_V> instead. |
| 94 | |
| 95 | =cut |
| 96 | */ |
| 97 | |
| 98 | #define GIMME_V OP_GIMME(PL_op, block_gimme()) |
| 99 | |
| 100 | /* Public flags */ |
| 101 | |
| 102 | #define OPf_WANT 3 /* Mask for "want" bits: */ |
| 103 | #define OPf_WANT_VOID 1 /* Want nothing */ |
| 104 | #define OPf_WANT_SCALAR 2 /* Want single value */ |
| 105 | #define OPf_WANT_LIST 3 /* Want list of any length */ |
| 106 | #define OPf_KIDS 4 /* There is a firstborn child. */ |
| 107 | #define OPf_PARENS 8 /* This operator was parenthesized. */ |
| 108 | /* (Or block needs explicit scope entry.) */ |
| 109 | #define OPf_REF 16 /* Certified reference. */ |
| 110 | /* (Return container, not containee). */ |
| 111 | #define OPf_MOD 32 /* Will modify (lvalue). */ |
| 112 | #define OPf_STACKED 64 /* Some arg is arriving on the stack. */ |
| 113 | #define OPf_SPECIAL 128 /* Do something weird for this op: */ |
| 114 | /* On local LVAL, don't init local value. */ |
| 115 | /* On OP_SORT, subroutine is inlined. */ |
| 116 | /* On OP_NOT, inversion was implicit. */ |
| 117 | /* On OP_LEAVE, don't restore curpm. */ |
| 118 | /* On truncate, we truncate filehandle */ |
| 119 | /* On control verbs, we saw no label */ |
| 120 | /* On flipflop, we saw ... instead of .. */ |
| 121 | /* On UNOPs, saw bare parens, e.g. eof(). */ |
| 122 | /* On OP_ENTERSUB || OP_NULL, saw a "do". */ |
| 123 | /* On OP_EXISTS, treat av as av, not avhv. */ |
| 124 | /* On OP_(ENTER|LEAVE)EVAL, don't clear $@ */ |
| 125 | /* On OP_ENTERITER, loop var is per-thread */ |
| 126 | /* On pushre, rx is used as part of split, e.g. split " " */ |
| 127 | /* On regcomp, "use re 'eval'" was in scope */ |
| 128 | /* On OP_READLINE, was <$filehandle> */ |
| 129 | /* On RV2[ACGHS]V, don't create GV--in |
| 130 | defined()*/ |
| 131 | /* On OP_DBSTATE, indicates breakpoint |
| 132 | * (runtime property) */ |
| 133 | /* On OP_AELEMFAST, indiciates pad var */ |
| 134 | /* On OP_REQUIRE, was seen as CORE::require */ |
| 135 | /* On OP_ENTERWHEN, there's no condition */ |
| 136 | /* On OP_BREAK, an implicit break */ |
| 137 | /* On OP_SMARTMATCH, an implicit smartmatch */ |
| 138 | /* On OP_ANONHASH and OP_ANONLIST, create a |
| 139 | reference to the new anon hash or array */ |
| 140 | /* On OP_ENTER, store caller context */ |
| 141 | /* On OP_HELEM and OP_HSLICE, localization will be followed |
| 142 | by assignment, so do not wipe the target if it is special |
| 143 | (e.g. a glob or a magic SV) */ |
| 144 | |
| 145 | /* old names; don't use in new code, but don't break them, either */ |
| 146 | #define OPf_LIST OPf_WANT_LIST |
| 147 | #define OPf_KNOW OPf_WANT |
| 148 | |
| 149 | #define GIMME \ |
| 150 | (PL_op->op_flags & OPf_WANT \ |
| 151 | ? ((PL_op->op_flags & OPf_WANT) == OPf_WANT_LIST \ |
| 152 | ? G_ARRAY \ |
| 153 | : G_SCALAR) \ |
| 154 | : dowantarray()) |
| 155 | |
| 156 | /* NOTE: OP_NEXTSTATE and OP_DBSTATE (i.e. COPs) carry lower |
| 157 | * bits of PL_hints in op_private */ |
| 158 | |
| 159 | /* Private for lvalues */ |
| 160 | #define OPpLVAL_INTRO 128 /* Lvalue must be localized or lvalue sub */ |
| 161 | |
| 162 | /* Private for OP_LEAVE, OP_LEAVESUB, OP_LEAVESUBLV and OP_LEAVEWRITE */ |
| 163 | #define OPpREFCOUNTED 64 /* op_targ carries a refcount */ |
| 164 | |
| 165 | /* Private for OP_AASSIGN */ |
| 166 | #define OPpASSIGN_COMMON 64 /* Left & right have syms in common. */ |
| 167 | |
| 168 | /* Private for OP_SASSIGN */ |
| 169 | #define OPpASSIGN_BACKWARDS 64 /* Left & right switched. */ |
| 170 | #define OPpASSIGN_CV_TO_GV 128 /* Possible optimisation for constants. */ |
| 171 | |
| 172 | /* Private for OP_MATCH and OP_SUBST{,CONST} */ |
| 173 | #define OPpRUNTIME 64 /* Pattern coming in on the stack */ |
| 174 | |
| 175 | /* Private for OP_TRANS */ |
| 176 | #define OPpTRANS_FROM_UTF 1 |
| 177 | #define OPpTRANS_TO_UTF 2 |
| 178 | #define OPpTRANS_IDENTICAL 4 /* right side is same as left */ |
| 179 | #define OPpTRANS_SQUASH 8 |
| 180 | /* 16 is used for OPpTARGET_MY */ |
| 181 | #define OPpTRANS_COMPLEMENT 32 |
| 182 | #define OPpTRANS_GROWS 64 |
| 183 | #define OPpTRANS_DELETE 128 |
| 184 | #define OPpTRANS_ALL (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF|OPpTRANS_IDENTICAL|OPpTRANS_SQUASH|OPpTRANS_COMPLEMENT|OPpTRANS_GROWS|OPpTRANS_DELETE) |
| 185 | |
| 186 | /* Private for OP_REPEAT */ |
| 187 | #define OPpREPEAT_DOLIST 64 /* List replication. */ |
| 188 | |
| 189 | /* Private for OP_RV2GV, OP_RV2SV, OP_AELEM, OP_HELEM, OP_PADSV */ |
| 190 | #define OPpDEREF (32|64) /* autovivify: Want ref to something: */ |
| 191 | #define OPpDEREF_AV 32 /* Want ref to AV. */ |
| 192 | #define OPpDEREF_HV 64 /* Want ref to HV. */ |
| 193 | #define OPpDEREF_SV (32|64) /* Want ref to SV. */ |
| 194 | /* Private for OP_RV2SV, OP_RV2AV, OP_RV2AV */ |
| 195 | #define OPpDEREFed 4 /* prev op was OPpDEREF */ |
| 196 | /* OP_ENTERSUB only */ |
| 197 | #define OPpENTERSUB_DB 16 /* Debug subroutine. */ |
| 198 | #define OPpENTERSUB_HASTARG 32 /* Called from OP tree. */ |
| 199 | #define OPpENTERSUB_NOMOD 64 /* Immune to mod() for :attrlist. */ |
| 200 | /* OP_ENTERSUB and OP_RV2CV only */ |
| 201 | #define OPpENTERSUB_AMPER 8 /* Used & form to call. */ |
| 202 | #define OPpENTERSUB_NOPAREN 128 /* bare sub call (without parens) */ |
| 203 | #define OPpENTERSUB_INARGS 4 /* Lval used as arg to a sub. */ |
| 204 | /* OP_GV only */ |
| 205 | #define OPpEARLY_CV 32 /* foo() called before sub foo was parsed */ |
| 206 | /* OP_?ELEM only */ |
| 207 | #define OPpLVAL_DEFER 16 /* Defer creation of array/hash elem */ |
| 208 | /* OP_RV2?V, OP_GVSV, OP_ENTERITER only */ |
| 209 | #define OPpOUR_INTRO 16 /* Variable was in an our() */ |
| 210 | /* OP_RV2[AGH]V, OP_PAD[AH]V, OP_[AH]ELEM */ |
| 211 | #define OPpMAYBE_LVSUB 8 /* We might be an lvalue to return */ |
| 212 | /* OP_PADSV only */ |
| 213 | #define OPpPAD_STATE 16 /* is a "state" pad */ |
| 214 | /* for OP_RV2?V, lower bits carry hints (currently only HINT_STRICT_REFS) */ |
| 215 | |
| 216 | /* OP_RV2GV only */ |
| 217 | #define OPpDONT_INIT_GV 4 /* Call gv_fetchpv with GV_NOINIT */ |
| 218 | /* (Therefore will return whatever is currently in the symbol table, not |
| 219 | guaranteed to be a PVGV) */ |
| 220 | |
| 221 | /* OP_RV2CV only */ |
| 222 | #define OPpMAY_RETURN_CONSTANT 1 /* If a constant sub, return the constant */ |
| 223 | |
| 224 | /* Private for OPs with TARGLEX */ |
| 225 | /* (lower bits may carry MAXARG) */ |
| 226 | #define OPpTARGET_MY 16 /* Target is PADMY. */ |
| 227 | |
| 228 | /* Private for OP_ENTERITER and OP_ITER */ |
| 229 | #define OPpITER_REVERSED 4 /* for (reverse ...) */ |
| 230 | #define OPpITER_DEF 8 /* for $_ or for my $_ */ |
| 231 | |
| 232 | /* Private for OP_CONST */ |
| 233 | #define OPpCONST_NOVER 2 /* no 6; */ |
| 234 | #define OPpCONST_SHORTCIRCUIT 4 /* eg the constant 5 in (5 || foo) */ |
| 235 | #define OPpCONST_STRICT 8 /* bearword subject to strict 'subs' */ |
| 236 | #define OPpCONST_ENTERED 16 /* Has been entered as symbol. */ |
| 237 | #define OPpCONST_ARYBASE 32 /* Was a $[ translated to constant. */ |
| 238 | #define OPpCONST_BARE 64 /* Was a bare word (filehandle?). */ |
| 239 | #define OPpCONST_WARNING 128 /* Was a $^W translated to constant. */ |
| 240 | |
| 241 | /* Private for OP_FLIP/FLOP */ |
| 242 | #define OPpFLIP_LINENUM 64 /* Range arg potentially a line num. */ |
| 243 | |
| 244 | /* Private for OP_LIST */ |
| 245 | #define OPpLIST_GUESSED 64 /* Guessed that pushmark was needed. */ |
| 246 | |
| 247 | /* Private for OP_DELETE */ |
| 248 | #define OPpSLICE 64 /* Operating on a list of keys */ |
| 249 | /* Also OPpLVAL_INTRO (128) */ |
| 250 | |
| 251 | /* Private for OP_EXISTS */ |
| 252 | #define OPpEXISTS_SUB 64 /* Checking for &sub, not {} or []. */ |
| 253 | |
| 254 | /* Private for OP_SORT */ |
| 255 | #define OPpSORT_NUMERIC 1 /* Optimized away { $a <=> $b } */ |
| 256 | #define OPpSORT_INTEGER 2 /* Ditto while under "use integer" */ |
| 257 | #define OPpSORT_REVERSE 4 /* Reversed sort */ |
| 258 | #define OPpSORT_INPLACE 8 /* sort in-place; eg @a = sort @a */ |
| 259 | #define OPpSORT_DESCEND 16 /* Descending sort */ |
| 260 | #define OPpSORT_QSORT 32 /* Use quicksort (not mergesort) */ |
| 261 | #define OPpSORT_STABLE 64 /* Use a stable algorithm */ |
| 262 | |
| 263 | /* Private for OP_REVERSE */ |
| 264 | #define OPpREVERSE_INPLACE 8 /* reverse in-place (@a = reverse @a) */ |
| 265 | |
| 266 | /* Private for OP_OPEN and OP_BACKTICK */ |
| 267 | #define OPpOPEN_IN_RAW 16 /* binmode(F,":raw") on input fh */ |
| 268 | #define OPpOPEN_IN_CRLF 32 /* binmode(F,":crlf") on input fh */ |
| 269 | #define OPpOPEN_OUT_RAW 64 /* binmode(F,":raw") on output fh */ |
| 270 | #define OPpOPEN_OUT_CRLF 128 /* binmode(F,":crlf") on output fh */ |
| 271 | |
| 272 | /* Private for OP_EXIT, HUSH also for OP_DIE */ |
| 273 | #define OPpHUSH_VMSISH 64 /* hush DCL exit msg vmsish mode*/ |
| 274 | #define OPpEXIT_VMSISH 128 /* exit(0) vs. exit(1) vmsish mode*/ |
| 275 | |
| 276 | /* Private for OP_FTXXX */ |
| 277 | #define OPpFT_ACCESS 2 /* use filetest 'access' */ |
| 278 | #define OPpFT_STACKED 4 /* stacked filetest, as in "-f -x $f" */ |
| 279 | |
| 280 | /* Private for OP_(MAP|GREP)(WHILE|START) */ |
| 281 | #define OPpGREP_LEX 2 /* iterate over lexical $_ */ |
| 282 | |
| 283 | /* Private for OP_ENTEREVAL */ |
| 284 | #define OPpEVAL_HAS_HH 2 /* Does it have a copy of %^H */ |
| 285 | |
| 286 | struct op { |
| 287 | BASEOP |
| 288 | }; |
| 289 | |
| 290 | struct unop { |
| 291 | BASEOP |
| 292 | OP * op_first; |
| 293 | }; |
| 294 | |
| 295 | struct binop { |
| 296 | BASEOP |
| 297 | OP * op_first; |
| 298 | OP * op_last; |
| 299 | }; |
| 300 | |
| 301 | struct logop { |
| 302 | BASEOP |
| 303 | OP * op_first; |
| 304 | OP * op_other; |
| 305 | }; |
| 306 | |
| 307 | struct listop { |
| 308 | BASEOP |
| 309 | OP * op_first; |
| 310 | OP * op_last; |
| 311 | }; |
| 312 | |
| 313 | struct pmop { |
| 314 | BASEOP |
| 315 | OP * op_first; |
| 316 | OP * op_last; |
| 317 | #ifdef USE_ITHREADS |
| 318 | IV op_pmoffset; |
| 319 | #else |
| 320 | REGEXP * op_pmregexp; /* compiled expression */ |
| 321 | #endif |
| 322 | U32 op_pmflags; |
| 323 | union { |
| 324 | OP * op_pmreplroot; /* For OP_SUBST */ |
| 325 | #ifdef USE_ITHREADS |
| 326 | PADOFFSET op_pmtargetoff; /* For OP_PUSHRE */ |
| 327 | #else |
| 328 | GV * op_pmtargetgv; |
| 329 | #endif |
| 330 | } op_pmreplrootu; |
| 331 | union { |
| 332 | OP * op_pmreplstart; /* Only used in OP_SUBST */ |
| 333 | #ifdef USE_ITHREADS |
| 334 | char * op_pmstashpv; /* Only used in OP_MATCH, with PMf_ONCE set */ |
| 335 | #else |
| 336 | HV * op_pmstash; |
| 337 | #endif |
| 338 | } op_pmstashstartu; |
| 339 | }; |
| 340 | |
| 341 | #ifdef USE_ITHREADS |
| 342 | #define PM_GETRE(o) (SvTYPE(PL_regex_pad[(o)->op_pmoffset]) == SVt_REGEXP \ |
| 343 | ? (REGEXP*)(PL_regex_pad[(o)->op_pmoffset]) : NULL) |
| 344 | /* The assignment is just to enforce type safety (or at least get a warning). |
| 345 | */ |
| 346 | /* With first class regexps not via a reference one needs to assign |
| 347 | &PL_sv_undef under ithreads. (This would probably work unthreaded, but NULL |
| 348 | is cheaper. I guess we could allow NULL, but the check above would get |
| 349 | more complex, and we'd have an AV with (SV*)NULL in it, which feels bad */ |
| 350 | /* BEWARE - something that calls this macro passes (r) which has a side |
| 351 | effect. */ |
| 352 | #define PM_SETRE(o,r) STMT_START { \ |
| 353 | REGEXP *const _pm_setre = (r); \ |
| 354 | assert(_pm_setre); \ |
| 355 | PL_regex_pad[(o)->op_pmoffset] = MUTABLE_SV(_pm_setre); \ |
| 356 | } STMT_END |
| 357 | #else |
| 358 | #define PM_GETRE(o) ((o)->op_pmregexp) |
| 359 | #define PM_SETRE(o,r) ((o)->op_pmregexp = (r)) |
| 360 | #endif |
| 361 | |
| 362 | |
| 363 | #define PMf_RETAINT 0x00000040 /* taint $1 etc. if target tainted */ |
| 364 | #define PMf_ONCE 0x00000080 /* match successfully only once per |
| 365 | reset, with related flag RXf_USED |
| 366 | in re->extflags holding state. |
| 367 | This is used only for ?? matches, |
| 368 | and only on OP_MATCH and OP_QR */ |
| 369 | |
| 370 | #define PMf_UNUSED 0x00000100 /* free for use */ |
| 371 | #define PMf_MAYBE_CONST 0x00000200 /* replacement contains variables */ |
| 372 | |
| 373 | #define PMf_USED 0x00000400 /* PMf_ONCE has matched successfully. |
| 374 | Not used under threading. */ |
| 375 | |
| 376 | #define PMf_CONST 0x00000800 /* subst replacement is constant */ |
| 377 | #define PMf_KEEP 0x00001000 /* keep 1st runtime pattern forever */ |
| 378 | #define PMf_GLOBAL 0x00002000 /* pattern had a g modifier */ |
| 379 | #define PMf_CONTINUE 0x00004000 /* don't reset pos() if //g fails */ |
| 380 | #define PMf_EVAL 0x00008000 /* evaluating replacement as expr */ |
| 381 | #define PMf_NONDESTRUCT 0x00010000 /* Return substituted string instead |
| 382 | of modifying it. */ |
| 383 | |
| 384 | /* The following flags have exact equivalents in regcomp.h with the prefix RXf_ |
| 385 | * which are stored in the regexp->extflags member. If you change them here, |
| 386 | * you have to change them there, and vice versa. |
| 387 | */ |
| 388 | #define PMf_MULTILINE 0x00000001 /* assume multiple lines */ |
| 389 | #define PMf_SINGLELINE 0x00000002 /* assume single line */ |
| 390 | #define PMf_FOLD 0x00000004 /* case insensitivity */ |
| 391 | #define PMf_EXTENDED 0x00000008 /* chuck embedded whitespace */ |
| 392 | #define PMf_KEEPCOPY 0x00000010 /* copy the string when matching */ |
| 393 | #define PMf_LOCALE 0x00000020 /* use locale for character types */ |
| 394 | |
| 395 | /* mask of bits that need to be transfered to re->extflags */ |
| 396 | #define PMf_COMPILETIME (PMf_MULTILINE|PMf_SINGLELINE|PMf_LOCALE|PMf_FOLD|PMf_EXTENDED|PMf_KEEPCOPY) |
| 397 | |
| 398 | #ifdef USE_ITHREADS |
| 399 | |
| 400 | # define PmopSTASHPV(o) \ |
| 401 | (((o)->op_pmflags & PMf_ONCE) ? (o)->op_pmstashstartu.op_pmstashpv : NULL) |
| 402 | # if defined (DEBUGGING) && defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) |
| 403 | # define PmopSTASHPV_set(o,pv) ({ \ |
| 404 | assert((o)->op_pmflags & PMf_ONCE); \ |
| 405 | ((o)->op_pmstashstartu.op_pmstashpv = savesharedpv(pv)); \ |
| 406 | }) |
| 407 | # else |
| 408 | # define PmopSTASHPV_set(o,pv) \ |
| 409 | ((o)->op_pmstashstartu.op_pmstashpv = savesharedpv(pv)) |
| 410 | # endif |
| 411 | # define PmopSTASH(o) (PmopSTASHPV(o) \ |
| 412 | ? gv_stashpv((o)->op_pmstashstartu.op_pmstashpv,GV_ADD) : NULL) |
| 413 | # define PmopSTASH_set(o,hv) PmopSTASHPV_set(o, ((hv) ? HvNAME_get(hv) : NULL)) |
| 414 | # define PmopSTASH_free(o) PerlMemShared_free(PmopSTASHPV(o)) |
| 415 | |
| 416 | #else |
| 417 | # define PmopSTASH(o) \ |
| 418 | (((o)->op_pmflags & PMf_ONCE) ? (o)->op_pmstashstartu.op_pmstash : NULL) |
| 419 | # if defined (DEBUGGING) && defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) |
| 420 | # define PmopSTASH_set(o,hv) ({ \ |
| 421 | assert((o)->op_pmflags & PMf_ONCE); \ |
| 422 | ((o)->op_pmstashstartu.op_pmstash = (hv)); \ |
| 423 | }) |
| 424 | # else |
| 425 | # define PmopSTASH_set(o,hv) ((o)->op_pmstashstartu.op_pmstash = (hv)) |
| 426 | # endif |
| 427 | # define PmopSTASHPV(o) (PmopSTASH(o) ? HvNAME_get(PmopSTASH(o)) : NULL) |
| 428 | /* op_pmstashstartu.op_pmstash is not refcounted */ |
| 429 | # define PmopSTASHPV_set(o,pv) PmopSTASH_set((o), gv_stashpv(pv,GV_ADD)) |
| 430 | /* Note that if this becomes non-empty, then S_forget_pmop in op.c will need |
| 431 | changing */ |
| 432 | # define PmopSTASH_free(o) |
| 433 | #endif |
| 434 | |
| 435 | struct svop { |
| 436 | BASEOP |
| 437 | SV * op_sv; |
| 438 | }; |
| 439 | |
| 440 | struct padop { |
| 441 | BASEOP |
| 442 | PADOFFSET op_padix; |
| 443 | }; |
| 444 | |
| 445 | struct pvop { |
| 446 | BASEOP |
| 447 | char * op_pv; |
| 448 | }; |
| 449 | |
| 450 | struct loop { |
| 451 | BASEOP |
| 452 | OP * op_first; |
| 453 | OP * op_last; |
| 454 | OP * op_redoop; |
| 455 | OP * op_nextop; |
| 456 | OP * op_lastop; |
| 457 | }; |
| 458 | |
| 459 | #define cUNOPx(o) ((UNOP*)o) |
| 460 | #define cBINOPx(o) ((BINOP*)o) |
| 461 | #define cLISTOPx(o) ((LISTOP*)o) |
| 462 | #define cLOGOPx(o) ((LOGOP*)o) |
| 463 | #define cPMOPx(o) ((PMOP*)o) |
| 464 | #define cSVOPx(o) ((SVOP*)o) |
| 465 | #define cPADOPx(o) ((PADOP*)o) |
| 466 | #define cPVOPx(o) ((PVOP*)o) |
| 467 | #define cCOPx(o) ((COP*)o) |
| 468 | #define cLOOPx(o) ((LOOP*)o) |
| 469 | |
| 470 | #define cUNOP cUNOPx(PL_op) |
| 471 | #define cBINOP cBINOPx(PL_op) |
| 472 | #define cLISTOP cLISTOPx(PL_op) |
| 473 | #define cLOGOP cLOGOPx(PL_op) |
| 474 | #define cPMOP cPMOPx(PL_op) |
| 475 | #define cSVOP cSVOPx(PL_op) |
| 476 | #define cPADOP cPADOPx(PL_op) |
| 477 | #define cPVOP cPVOPx(PL_op) |
| 478 | #define cCOP cCOPx(PL_op) |
| 479 | #define cLOOP cLOOPx(PL_op) |
| 480 | |
| 481 | #define cUNOPo cUNOPx(o) |
| 482 | #define cBINOPo cBINOPx(o) |
| 483 | #define cLISTOPo cLISTOPx(o) |
| 484 | #define cLOGOPo cLOGOPx(o) |
| 485 | #define cPMOPo cPMOPx(o) |
| 486 | #define cSVOPo cSVOPx(o) |
| 487 | #define cPADOPo cPADOPx(o) |
| 488 | #define cPVOPo cPVOPx(o) |
| 489 | #define cCOPo cCOPx(o) |
| 490 | #define cLOOPo cLOOPx(o) |
| 491 | |
| 492 | #define kUNOP cUNOPx(kid) |
| 493 | #define kBINOP cBINOPx(kid) |
| 494 | #define kLISTOP cLISTOPx(kid) |
| 495 | #define kLOGOP cLOGOPx(kid) |
| 496 | #define kPMOP cPMOPx(kid) |
| 497 | #define kSVOP cSVOPx(kid) |
| 498 | #define kPADOP cPADOPx(kid) |
| 499 | #define kPVOP cPVOPx(kid) |
| 500 | #define kCOP cCOPx(kid) |
| 501 | #define kLOOP cLOOPx(kid) |
| 502 | |
| 503 | |
| 504 | #ifdef USE_ITHREADS |
| 505 | # define cGVOPx_gv(o) ((GV*)PAD_SVl(cPADOPx(o)->op_padix)) |
| 506 | # define IS_PADGV(v) (v && SvTYPE(v) == SVt_PVGV && isGV_with_GP(v) \ |
| 507 | && GvIN_PAD(v)) |
| 508 | # define IS_PADCONST(v) (v && SvREADONLY(v)) |
| 509 | # define cSVOPx_sv(v) (cSVOPx(v)->op_sv \ |
| 510 | ? cSVOPx(v)->op_sv : PAD_SVl((v)->op_targ)) |
| 511 | # define cSVOPx_svp(v) (cSVOPx(v)->op_sv \ |
| 512 | ? &cSVOPx(v)->op_sv : &PAD_SVl((v)->op_targ)) |
| 513 | #else |
| 514 | # define cGVOPx_gv(o) ((GV*)cSVOPx(o)->op_sv) |
| 515 | # define IS_PADGV(v) FALSE |
| 516 | # define IS_PADCONST(v) FALSE |
| 517 | # define cSVOPx_sv(v) (cSVOPx(v)->op_sv) |
| 518 | # define cSVOPx_svp(v) (&cSVOPx(v)->op_sv) |
| 519 | #endif |
| 520 | |
| 521 | #define cGVOP_gv cGVOPx_gv(PL_op) |
| 522 | #define cGVOPo_gv cGVOPx_gv(o) |
| 523 | #define kGVOP_gv cGVOPx_gv(kid) |
| 524 | #define cSVOP_sv cSVOPx_sv(PL_op) |
| 525 | #define cSVOPo_sv cSVOPx_sv(o) |
| 526 | #define kSVOP_sv cSVOPx_sv(kid) |
| 527 | |
| 528 | #ifndef PERL_CORE |
| 529 | # define Nullop ((OP*)NULL) |
| 530 | #endif |
| 531 | |
| 532 | /* Lowest byte-and-a-bit of PL_opargs */ |
| 533 | #define OA_MARK 1 |
| 534 | #define OA_FOLDCONST 2 |
| 535 | #define OA_RETSCALAR 4 |
| 536 | #define OA_TARGET 8 |
| 537 | #define OA_RETINTEGER 16 |
| 538 | #define OA_OTHERINT 32 |
| 539 | #define OA_DANGEROUS 64 |
| 540 | #define OA_DEFGV 128 |
| 541 | #define OA_TARGLEX 256 |
| 542 | |
| 543 | /* The next 4 bits encode op class information */ |
| 544 | #define OCSHIFT 9 |
| 545 | |
| 546 | #define OA_CLASS_MASK (15 << OCSHIFT) |
| 547 | |
| 548 | #define OA_BASEOP (0 << OCSHIFT) |
| 549 | #define OA_UNOP (1 << OCSHIFT) |
| 550 | #define OA_BINOP (2 << OCSHIFT) |
| 551 | #define OA_LOGOP (3 << OCSHIFT) |
| 552 | #define OA_LISTOP (4 << OCSHIFT) |
| 553 | #define OA_PMOP (5 << OCSHIFT) |
| 554 | #define OA_SVOP (6 << OCSHIFT) |
| 555 | #define OA_PADOP (7 << OCSHIFT) |
| 556 | #define OA_PVOP_OR_SVOP (8 << OCSHIFT) |
| 557 | #define OA_LOOP (9 << OCSHIFT) |
| 558 | #define OA_COP (10 << OCSHIFT) |
| 559 | #define OA_BASEOP_OR_UNOP (11 << OCSHIFT) |
| 560 | #define OA_FILESTATOP (12 << OCSHIFT) |
| 561 | #define OA_LOOPEXOP (13 << OCSHIFT) |
| 562 | |
| 563 | #define OASHIFT 13 |
| 564 | |
| 565 | /* Remaining nybbles of PL_opargs */ |
| 566 | #define OA_SCALAR 1 |
| 567 | #define OA_LIST 2 |
| 568 | #define OA_AVREF 3 |
| 569 | #define OA_HVREF 4 |
| 570 | #define OA_CVREF 5 |
| 571 | #define OA_FILEREF 6 |
| 572 | #define OA_SCALARREF 7 |
| 573 | #define OA_OPTIONAL 8 |
| 574 | |
| 575 | /* Op_REFCNT is a reference count at the head of each op tree: needed |
| 576 | * since the tree is shared between threads, and between cloned closure |
| 577 | * copies in the same thread. OP_REFCNT_LOCK/UNLOCK is used when modifying |
| 578 | * this count. |
| 579 | * The same mutex is used to protect the refcounts of the reg_trie_data |
| 580 | * and reg_ac_data structures, which are shared between duplicated |
| 581 | * regexes. |
| 582 | */ |
| 583 | |
| 584 | #ifdef USE_ITHREADS |
| 585 | # define OP_REFCNT_INIT MUTEX_INIT(&PL_op_mutex) |
| 586 | # ifdef PERL_CORE |
| 587 | # define OP_REFCNT_LOCK MUTEX_LOCK(&PL_op_mutex) |
| 588 | # define OP_REFCNT_UNLOCK MUTEX_UNLOCK(&PL_op_mutex) |
| 589 | # else |
| 590 | # define OP_REFCNT_LOCK op_refcnt_lock() |
| 591 | # define OP_REFCNT_UNLOCK op_refcnt_unlock() |
| 592 | # endif |
| 593 | # define OP_REFCNT_TERM MUTEX_DESTROY(&PL_op_mutex) |
| 594 | #else |
| 595 | # define OP_REFCNT_INIT NOOP |
| 596 | # define OP_REFCNT_LOCK NOOP |
| 597 | # define OP_REFCNT_UNLOCK NOOP |
| 598 | # define OP_REFCNT_TERM NOOP |
| 599 | #endif |
| 600 | |
| 601 | #define OpREFCNT_set(o,n) ((o)->op_targ = (n)) |
| 602 | #ifdef PERL_DEBUG_READONLY_OPS |
| 603 | # define OpREFCNT_inc(o) Perl_op_refcnt_inc(aTHX_ o) |
| 604 | # define OpREFCNT_dec(o) Perl_op_refcnt_dec(aTHX_ o) |
| 605 | #else |
| 606 | # define OpREFCNT_inc(o) ((o) ? (++(o)->op_targ, (o)) : NULL) |
| 607 | # define OpREFCNT_dec(o) (--(o)->op_targ) |
| 608 | #endif |
| 609 | |
| 610 | /* flags used by Perl_load_module() */ |
| 611 | #define PERL_LOADMOD_DENY 0x1 /* no Module */ |
| 612 | #define PERL_LOADMOD_NOIMPORT 0x2 /* use Module () */ |
| 613 | #define PERL_LOADMOD_IMPORT_OPS 0x4 /* use Module (...) */ |
| 614 | |
| 615 | #if defined(PERL_IN_PERLY_C) || defined(PERL_IN_OP_C) |
| 616 | #define ref(o, type) doref(o, type, TRUE) |
| 617 | #endif |
| 618 | |
| 619 | /* no longer used anywhere in core */ |
| 620 | #ifndef PERL_CORE |
| 621 | #define cv_ckproto(cv, gv, p) \ |
| 622 | cv_ckproto_len((cv), (gv), (p), (p) ? strlen(p) : 0) |
| 623 | #endif |
| 624 | |
| 625 | #ifdef PERL_CORE |
| 626 | # define my(o) my_attrs((o), NULL) |
| 627 | #endif |
| 628 | |
| 629 | #ifdef USE_REENTRANT_API |
| 630 | #include "reentr.h" |
| 631 | #endif |
| 632 | |
| 633 | #if defined(PL_OP_SLAB_ALLOC) |
| 634 | #define NewOp(m,var,c,type) \ |
| 635 | (var = (type *) Perl_Slab_Alloc(aTHX_ c*sizeof(type))) |
| 636 | #define NewOpSz(m,var,size) \ |
| 637 | (var = (OP *) Perl_Slab_Alloc(aTHX_ size)) |
| 638 | #define FreeOp(p) Perl_Slab_Free(aTHX_ p) |
| 639 | #else |
| 640 | #define NewOp(m, var, c, type) \ |
| 641 | (var = (MEM_WRAP_CHECK_(c,type) \ |
| 642 | (type*)PerlMemShared_calloc(c, sizeof(type)))) |
| 643 | #define NewOpSz(m, var, size) \ |
| 644 | (var = (OP*)PerlMemShared_calloc(1, size)) |
| 645 | #define FreeOp(p) PerlMemShared_free(p) |
| 646 | #endif |
| 647 | |
| 648 | #ifdef PERL_MAD |
| 649 | # define MAD_NULL 1 |
| 650 | # define MAD_PV 2 |
| 651 | # define MAD_OP 3 |
| 652 | # define MAD_SV 4 |
| 653 | |
| 654 | struct madprop { |
| 655 | MADPROP* mad_next; |
| 656 | void *mad_val; |
| 657 | U32 mad_vlen; |
| 658 | /* short mad_count; */ |
| 659 | char mad_key; |
| 660 | char mad_type; |
| 661 | }; |
| 662 | |
| 663 | struct token { |
| 664 | I32 tk_type; |
| 665 | YYSTYPE tk_lval; |
| 666 | MADPROP* tk_mad; |
| 667 | }; |
| 668 | #endif |
| 669 | |
| 670 | /* |
| 671 | * Values that can be held by mad_key : |
| 672 | * ^ unfilled head spot |
| 673 | * , literal , |
| 674 | * ; literal ; (blank if implicit ; at end of block) |
| 675 | * : literal : from ?: or attr list |
| 676 | * + unary + |
| 677 | * ? literal ? from ?: |
| 678 | * ( literal ( |
| 679 | * ) literal ) |
| 680 | * [ literal [ |
| 681 | * ] literal ] |
| 682 | * { literal { |
| 683 | * } literal } |
| 684 | * @ literal @ sigil |
| 685 | * $ literal $ sigil |
| 686 | * * literal * sigil |
| 687 | * ! use is source filtered |
| 688 | * & & or sub |
| 689 | * # whitespace/comment following ; or } |
| 690 | * # $# sigil |
| 691 | * 1 1st ; from for(;;) |
| 692 | * 1 retired protasis |
| 693 | * 2 2nd ; from for(;;) |
| 694 | * 2 retired apodosis |
| 695 | * 3 C-style for list |
| 696 | * a sub or var attributes |
| 697 | * a non-method arrow operator |
| 698 | * A method arrow operator |
| 699 | * A use import args |
| 700 | * b format block |
| 701 | * B retired stub block |
| 702 | * C constant conditional op |
| 703 | * d declarator |
| 704 | * D do block |
| 705 | * e unreached "else" (see C) |
| 706 | * e expression producing E |
| 707 | * E tr/E/R/, /E/ |
| 708 | * f folded constant op |
| 709 | * F peg op for format |
| 710 | * g op was forced to be a word |
| 711 | * i if/unless modifier |
| 712 | * I if/elsif/unless statement |
| 713 | * k local declarator |
| 714 | * K retired kid op |
| 715 | * l last index of array ($#foo) |
| 716 | * L label |
| 717 | * m modifier on regex |
| 718 | * n sub or format name |
| 719 | * o current operator/declarator name |
| 720 | * o else/continue |
| 721 | * O generic optimized op |
| 722 | * p peg to hold extra whitespace at statement level |
| 723 | * P peg op for package declaration |
| 724 | * q opening quote |
| 725 | * = quoted material |
| 726 | * Q closing quote |
| 727 | * Q optimized qw// |
| 728 | * r expression producing R |
| 729 | * R tr/E/R/ s/E/R/ |
| 730 | * s sub signature |
| 731 | * S use import stub (no import) |
| 732 | * S retired sort block |
| 733 | * t unreached "then" (see C) |
| 734 | * U use import op |
| 735 | * v private sv of for loop |
| 736 | * V use version |
| 737 | * w while/until modifier |
| 738 | * W while/for statement |
| 739 | * x optimized qw |
| 740 | * X random thing |
| 741 | * _ whitespace/comments preceding anything else |
| 742 | * ~ =~ operator |
| 743 | */ |
| 744 | |
| 745 | /* |
| 746 | * Local variables: |
| 747 | * c-indentation-style: bsd |
| 748 | * c-basic-offset: 4 |
| 749 | * indent-tabs-mode: t |
| 750 | * End: |
| 751 | * |
| 752 | * ex: set ts=8 sts=4 sw=4 noet: |
| 753 | */ |