3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 * 2000, 2001, 2002, 2003, 2004, 2005, 2006 by Larry Wall and others
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.
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
22 * op_static Whether or not the op is statically defined.
23 * This flag is used by the B::C compiler backend
24 * and indicates that the op should not be freed.
26 * See the comments in S_clear_yystack() for more
27 * details on the following three flags:
29 * op_latefree tell op_free() to clear this op (and free any kids)
30 * but not yet deallocate the struct. This means that
31 * the op may be safely op_free()d multiple times
32 * op_latefreed an op_latefree op has been op_free()d
33 * op_attached this op (sub)tree has been attached to a CV
35 * op_spare two spare bits!
36 * op_flags Flags common to all operations. See OPf_* below.
37 * op_private Flags peculiar to a particular operation (BUT,
38 * by default, set to the number of children until
39 * the operation is privatized by a check routine,
40 * which may or may not check number of children).
50 # define MADPROP_IN_BASEOP MADPROP* op_madprop;
52 # define MADPROP_IN_BASEOP
55 #ifdef BASEOP_DEFINITION
56 #define BASEOP BASEOP_DEFINITION
61 OP* (CPERLscope(*op_ppaddr))(pTHX); \
66 unsigned op_static:1; \
67 unsigned op_latefree:1; \
68 unsigned op_latefreed:1; \
69 unsigned op_attached:1; \
70 unsigned op_spare:2; \
75 #define OP_GIMME(op,dfl) \
76 (((op)->op_flags & OPf_WANT) == OPf_WANT_VOID ? G_VOID : \
77 ((op)->op_flags & OPf_WANT) == OPf_WANT_SCALAR ? G_SCALAR : \
78 ((op)->op_flags & OPf_WANT) == OPf_WANT_LIST ? G_ARRAY : \
84 =for apidoc Amn|U32|GIMME_V
85 The XSUB-writer's equivalent to Perl's C<wantarray>. Returns C<G_VOID>,
86 C<G_SCALAR> or C<G_ARRAY> for void, scalar or list context,
89 =for apidoc Amn|U32|GIMME
90 A backward-compatible version of C<GIMME_V> which can only return
91 C<G_SCALAR> or C<G_ARRAY>; in a void context, it returns C<G_SCALAR>.
92 Deprecated. Use C<GIMME_V> instead.
97 #define GIMME_V OP_GIMME(PL_op, block_gimme())
101 #define OPf_WANT 3 /* Mask for "want" bits: */
102 #define OPf_WANT_VOID 1 /* Want nothing */
103 #define OPf_WANT_SCALAR 2 /* Want single value */
104 #define OPf_WANT_LIST 3 /* Want list of any length */
105 #define OPf_KIDS 4 /* There is a firstborn child. */
106 #define OPf_PARENS 8 /* This operator was parenthesized. */
107 /* (Or block needs explicit scope entry.) */
108 #define OPf_REF 16 /* Certified reference. */
109 /* (Return container, not containee). */
110 #define OPf_MOD 32 /* Will modify (lvalue). */
111 #define OPf_STACKED 64 /* Some arg is arriving on the stack. */
112 #define OPf_SPECIAL 128 /* Do something weird for this op: */
113 /* On local LVAL, don't init local value. */
114 /* On OP_CONST, value is the hints hash for
115 eval, so return a copy from pp_const() */
116 /* On OP_SORT, subroutine is inlined. */
117 /* On OP_NOT, inversion was implicit. */
118 /* On OP_LEAVE, don't restore curpm. */
119 /* On truncate, we truncate filehandle */
120 /* On control verbs, we saw no label */
121 /* On flipflop, we saw ... instead of .. */
122 /* On UNOPs, saw bare parens, e.g. eof(). */
123 /* On OP_ENTERSUB || OP_NULL, saw a "do". */
124 /* On OP_EXISTS, treat av as av, not avhv. */
125 /* On OP_(ENTER|LEAVE)EVAL, don't clear $@ */
126 /* On OP_ENTERITER, loop var is per-thread */
127 /* On pushre, re is /\s+/ imp. by split " " */
128 /* On regcomp, "use re 'eval'" was in scope */
129 /* On OP_READLINE, was <$filehandle> */
130 /* On RV2[ACGHS]V, don't create GV--in
132 /* On OP_DBSTATE, indicates breakpoint
133 * (runtime property) */
134 /* On OP_AELEMFAST, indiciates pad var */
135 /* On OP_REQUIRE, was seen as CORE::require */
136 /* On OP_ENTERWHEN, there's no condition */
137 /* On OP_BREAK, an implicit break */
138 /* On OP_SMARTMATCH, an implicit smartmatch */
139 /* On OP_ANONHASH and OP_ANONLIST, create a
140 reference to the new anon hash or array */
142 /* old names; don't use in new code, but don't break them, either */
143 #define OPf_LIST OPf_WANT_LIST
144 #define OPf_KNOW OPf_WANT
147 (PL_op->op_flags & OPf_WANT \
148 ? ((PL_op->op_flags & OPf_WANT) == OPf_WANT_LIST \
153 /* NOTE: OP_NEXTSTATE, OP_DBSTATE, and OP_SETSTATE (i.e. COPs) carry lower
154 * bits of PL_hints in op_private */
156 /* Private for lvalues */
157 #define OPpLVAL_INTRO 128 /* Lvalue must be localized or lvalue sub */
159 /* Private for OP_LEAVE, OP_LEAVESUB, OP_LEAVESUBLV and OP_LEAVEWRITE */
160 #define OPpREFCOUNTED 64 /* op_targ carries a refcount */
162 /* Private for OP_AASSIGN */
163 #define OPpASSIGN_COMMON 64 /* Left & right have syms in common. */
165 /* Private for OP_SASSIGN */
166 #define OPpASSIGN_BACKWARDS 64 /* Left & right switched. */
167 #define OPpASSIGN_CV_TO_GV 128 /* Possible optimisation for constants. */
169 /* Private for OP_[AS]ASSIGN */
170 #define OPpASSIGN_STATE 32 /* Assign to a "state" variable */
172 /* Private for OP_MATCH and OP_SUBST{,CONST} */
173 #define OPpRUNTIME 64 /* Pattern coming in on the stack */
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)
186 /* Private for OP_REPEAT */
187 #define OPpREPEAT_DOLIST 64 /* List replication. */
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 /* OP_ENTERSUB only */
195 #define OPpENTERSUB_DB 16 /* Debug subroutine. */
196 #define OPpENTERSUB_HASTARG 32 /* Called from OP tree. */
197 #define OPpENTERSUB_NOMOD 64 /* Immune to mod() for :attrlist. */
199 #define OPpENTERSUB_AMPER 8 /* Used & form to call. */
200 #define OPpENTERSUB_NOPAREN 128 /* bare sub call (without parens) */
201 #define OPpENTERSUB_INARGS 4 /* Lval used as arg to a sub. */
203 #define OPpEARLY_CV 32 /* foo() called before sub foo was parsed */
205 #define OPpLVAL_DEFER 16 /* Defer creation of array/hash elem */
206 /* OP_RV2?V, OP_GVSV, OP_ENTERITER only */
207 #define OPpOUR_INTRO 16 /* Variable was in an our() */
208 /* OP_RV2[AGH]V, OP_PAD[AH]V, OP_[AH]ELEM */
209 #define OPpMAYBE_LVSUB 8 /* We might be an lvalue to return */
211 #define OPpPAD_STATE 16 /* is a "state" pad */
212 /* for OP_RV2?V, lower bits carry hints (currently only HINT_STRICT_REFS) */
215 #define OPpDONT_INIT_GV 4 /* Call gv_fetchpv with GV_NOINIT */
216 /* (Therefore will return whatever is currently in the symbol table, not
217 guaranteed to be a PVGV) */
220 #define OPpMAY_RETURN_CONSTANT 1 /* If a constant sub, return the constant */
222 /* Private for OPs with TARGLEX */
223 /* (lower bits may carry MAXARG) */
224 #define OPpTARGET_MY 16 /* Target is PADMY. */
226 /* Private for OP_ENTERITER and OP_ITER */
227 #define OPpITER_REVERSED 4 /* for (reverse ...) */
228 #define OPpITER_DEF 8 /* for $_ or for my $_ */
230 /* Private for OP_CONST */
231 #define OPpCONST_NOVER 2 /* no 6; */
232 #define OPpCONST_SHORTCIRCUIT 4 /* eg the constant 5 in (5 || foo) */
233 #define OPpCONST_STRICT 8 /* bearword subject to strict 'subs' */
234 #define OPpCONST_ENTERED 16 /* Has been entered as symbol. */
235 #define OPpCONST_ARYBASE 32 /* Was a $[ translated to constant. */
236 #define OPpCONST_BARE 64 /* Was a bare word (filehandle?). */
237 #define OPpCONST_WARNING 128 /* Was a $^W translated to constant. */
239 /* Private for OP_FLIP/FLOP */
240 #define OPpFLIP_LINENUM 64 /* Range arg potentially a line num. */
242 /* Private for OP_LIST */
243 #define OPpLIST_GUESSED 64 /* Guessed that pushmark was needed. */
245 /* Private for OP_DELETE */
246 #define OPpSLICE 64 /* Operating on a list of keys */
248 /* Private for OP_EXISTS */
249 #define OPpEXISTS_SUB 64 /* Checking for &sub, not {} or []. */
251 /* Private for OP_SORT */
252 #define OPpSORT_NUMERIC 1 /* Optimized away { $a <=> $b } */
253 #define OPpSORT_INTEGER 2 /* Ditto while under "use integer" */
254 #define OPpSORT_REVERSE 4 /* Reversed sort */
255 #define OPpSORT_INPLACE 8 /* sort in-place; eg @a = sort @a */
256 #define OPpSORT_DESCEND 16 /* Descending sort */
257 #define OPpSORT_QSORT 32 /* Use quicksort (not mergesort) */
258 #define OPpSORT_STABLE 64 /* Use a stable algorithm */
260 /* Private for OP_THREADSV */
261 #define OPpDONE_SVREF 64 /* Been through newSVREF once */
263 /* Private for OP_OPEN and OP_BACKTICK */
264 #define OPpOPEN_IN_RAW 16 /* binmode(F,":raw") on input fh */
265 #define OPpOPEN_IN_CRLF 32 /* binmode(F,":crlf") on input fh */
266 #define OPpOPEN_OUT_RAW 64 /* binmode(F,":raw") on output fh */
267 #define OPpOPEN_OUT_CRLF 128 /* binmode(F,":crlf") on output fh */
269 /* Private for OP_EXIT, HUSH also for OP_DIE */
270 #define OPpHUSH_VMSISH 64 /* hush DCL exit msg vmsish mode*/
271 #define OPpEXIT_VMSISH 128 /* exit(0) vs. exit(1) vmsish mode*/
273 /* Private for OP_FTXXX */
274 #define OPpFT_ACCESS 2 /* use filetest 'access' */
275 #define OPpFT_STACKED 4 /* stacked filetest, as in "-f -x $f" */
276 #define OP_IS_FILETEST_ACCESS(op) \
277 (((op)->op_type) == OP_FTRREAD || \
278 ((op)->op_type) == OP_FTRWRITE || \
279 ((op)->op_type) == OP_FTREXEC || \
280 ((op)->op_type) == OP_FTEREAD || \
281 ((op)->op_type) == OP_FTEWRITE || \
282 ((op)->op_type) == OP_FTEEXEC)
284 /* Private for OP_(MAP|GREP)(WHILE|START) */
285 #define OPpGREP_LEX 2 /* iterate over lexical $_ */
287 /* Private for OP_ENTEREVAL */
288 #define OPpEVAL_HAS_HH 2 /* Does it have a copy of %^H */
321 OP * op_pmreplroot; /* (type is really union {OP*,GV*,PADOFFSET}) */
326 REGEXP * op_pmregexp; /* compiled expression */
329 /* This field is only needed so that PMOPs can delete themselves from the
330 list held by the stash. In turn, that list is only needed for reset
331 to work correctly, and is now only a list of ops used by ?? matches,
332 which are rare. Hence it would be useful if we could find a way to
342 #define PM_GETRE(o) (INT2PTR(REGEXP*,SvIVX(PL_regex_pad[(o)->op_pmoffset])))
343 #define PM_SETRE(o,r) STMT_START { \
344 SV* const sv = PL_regex_pad[(o)->op_pmoffset]; \
345 sv_setiv(sv, PTR2IV(r)); \
347 #define PM_GETRE_SAFE(o) (PL_regex_pad ? PM_GETRE(o) : (REGEXP*)0)
348 #define PM_SETRE_SAFE(o,r) if (PL_regex_pad) PM_SETRE(o,r)
350 #define PM_GETRE(o) ((o)->op_pmregexp)
351 #define PM_SETRE(o,r) ((o)->op_pmregexp = (r))
352 #define PM_GETRE_SAFE PM_GETRE
353 #define PM_SETRE_SAFE PM_SETRE
357 #define PMf_RETAINT 0x0001 /* taint $1 etc. if target tainted */
358 #define PMf_ONCE 0x0002 /* match successfully only once per
359 reset, with related flag RXf_USED
360 in re->extflags holding state */
362 #define PMf_UNUSED 0x0004 /* free for use */
363 #define PMf_MAYBE_CONST 0x0008 /* replacement contains variables */
365 #define PMf_USED 0x0010 /* PMf_ONCE has matched successfully.
366 Not used under threading. */
368 #define PMf_CONST 0x0040 /* subst replacement is constant */
369 #define PMf_KEEP 0x0080 /* keep 1st runtime pattern forever */
370 #define PMf_GLOBAL 0x0100 /* pattern had a g modifier */
371 #define PMf_CONTINUE 0x0200 /* don't reset pos() if //g fails */
372 #define PMf_EVAL 0x0400 /* evaluating replacement as expr */
374 /* The following flags have exact equivalents in regcomp.h with the prefix RXf_
375 * which are stored in the regexp->extflags member.
377 #define PMf_LOCALE 0x00800 /* use locale for character types */
378 #define PMf_MULTILINE 0x01000 /* assume multiple lines */
379 #define PMf_SINGLELINE 0x02000 /* assume single line */
380 #define PMf_FOLD 0x04000 /* case insensitivity */
381 #define PMf_EXTENDED 0x08000 /* chuck embedded whitespace */
382 #define PMf_KEEPCOPY 0x10000 /* copy the string when matching */
384 /* mask of bits that need to be transfered to re->extflags */
385 #define PMf_COMPILETIME (PMf_MULTILINE|PMf_SINGLELINE|PMf_LOCALE|PMf_FOLD|PMf_EXTENDED|PMf_KEEPCOPY)
389 # define PmopSTASHPV(o) ((o)->op_pmstashpv)
390 # define PmopSTASHPV_set(o,pv) (PmopSTASHPV(o) = savesharedpv(pv))
391 # define PmopSTASH(o) (PmopSTASHPV(o) \
392 ? gv_stashpv(PmopSTASHPV(o),GV_ADD) : NULL)
393 # define PmopSTASH_set(o,hv) PmopSTASHPV_set(o, ((hv) ? HvNAME_get(hv) : NULL))
394 # define PmopSTASH_free(o) PerlMemShared_free(PmopSTASHPV(o))
397 # define PmopSTASH(o) ((o)->op_pmstash)
398 # define PmopSTASH_set(o,hv) ((o)->op_pmstash = (hv))
399 # define PmopSTASHPV(o) (PmopSTASH(o) ? HvNAME_get(PmopSTASH(o)) : NULL)
400 /* op_pmstash is not refcounted */
401 # define PmopSTASHPV_set(o,pv) PmopSTASH_set((o), gv_stashpv(pv,GV_ADD))
402 # define PmopSTASH_free(o)
429 #define cUNOPx(o) ((UNOP*)o)
430 #define cBINOPx(o) ((BINOP*)o)
431 #define cLISTOPx(o) ((LISTOP*)o)
432 #define cLOGOPx(o) ((LOGOP*)o)
433 #define cPMOPx(o) ((PMOP*)o)
434 #define cSVOPx(o) ((SVOP*)o)
435 #define cPADOPx(o) ((PADOP*)o)
436 #define cPVOPx(o) ((PVOP*)o)
437 #define cCOPx(o) ((COP*)o)
438 #define cLOOPx(o) ((LOOP*)o)
440 #define cUNOP cUNOPx(PL_op)
441 #define cBINOP cBINOPx(PL_op)
442 #define cLISTOP cLISTOPx(PL_op)
443 #define cLOGOP cLOGOPx(PL_op)
444 #define cPMOP cPMOPx(PL_op)
445 #define cSVOP cSVOPx(PL_op)
446 #define cPADOP cPADOPx(PL_op)
447 #define cPVOP cPVOPx(PL_op)
448 #define cCOP cCOPx(PL_op)
449 #define cLOOP cLOOPx(PL_op)
451 #define cUNOPo cUNOPx(o)
452 #define cBINOPo cBINOPx(o)
453 #define cLISTOPo cLISTOPx(o)
454 #define cLOGOPo cLOGOPx(o)
455 #define cPMOPo cPMOPx(o)
456 #define cSVOPo cSVOPx(o)
457 #define cPADOPo cPADOPx(o)
458 #define cPVOPo cPVOPx(o)
459 #define cCOPo cCOPx(o)
460 #define cLOOPo cLOOPx(o)
462 #define kUNOP cUNOPx(kid)
463 #define kBINOP cBINOPx(kid)
464 #define kLISTOP cLISTOPx(kid)
465 #define kLOGOP cLOGOPx(kid)
466 #define kPMOP cPMOPx(kid)
467 #define kSVOP cSVOPx(kid)
468 #define kPADOP cPADOPx(kid)
469 #define kPVOP cPVOPx(kid)
470 #define kCOP cCOPx(kid)
471 #define kLOOP cLOOPx(kid)
475 # define cGVOPx_gv(o) ((GV*)PAD_SVl(cPADOPx(o)->op_padix))
476 # define IS_PADGV(v) (v && SvTYPE(v) == SVt_PVGV && isGV_with_GP(v) \
478 # define IS_PADCONST(v) (v && SvREADONLY(v))
479 # define cSVOPx_sv(v) (cSVOPx(v)->op_sv \
480 ? cSVOPx(v)->op_sv : PAD_SVl((v)->op_targ))
481 # define cSVOPx_svp(v) (cSVOPx(v)->op_sv \
482 ? &cSVOPx(v)->op_sv : &PAD_SVl((v)->op_targ))
484 # define cGVOPx_gv(o) ((GV*)cSVOPx(o)->op_sv)
485 # define IS_PADGV(v) FALSE
486 # define IS_PADCONST(v) FALSE
487 # define cSVOPx_sv(v) (cSVOPx(v)->op_sv)
488 # define cSVOPx_svp(v) (&cSVOPx(v)->op_sv)
491 #define cGVOP_gv cGVOPx_gv(PL_op)
492 #define cGVOPo_gv cGVOPx_gv(o)
493 #define kGVOP_gv cGVOPx_gv(kid)
494 #define cSVOP_sv cSVOPx_sv(PL_op)
495 #define cSVOPo_sv cSVOPx_sv(o)
496 #define kSVOP_sv cSVOPx_sv(kid)
498 #define Nullop Null(OP*)
500 /* Lowest byte-and-a-bit of PL_opargs */
502 #define OA_FOLDCONST 2
503 #define OA_RETSCALAR 4
505 #define OA_RETINTEGER 16
506 #define OA_OTHERINT 32
507 #define OA_DANGEROUS 64
509 #define OA_TARGLEX 256
511 /* The next 4 bits encode op class information */
514 #define OA_CLASS_MASK (15 << OCSHIFT)
516 #define OA_BASEOP (0 << OCSHIFT)
517 #define OA_UNOP (1 << OCSHIFT)
518 #define OA_BINOP (2 << OCSHIFT)
519 #define OA_LOGOP (3 << OCSHIFT)
520 #define OA_LISTOP (4 << OCSHIFT)
521 #define OA_PMOP (5 << OCSHIFT)
522 #define OA_SVOP (6 << OCSHIFT)
523 #define OA_PADOP (7 << OCSHIFT)
524 #define OA_PVOP_OR_SVOP (8 << OCSHIFT)
525 #define OA_LOOP (9 << OCSHIFT)
526 #define OA_COP (10 << OCSHIFT)
527 #define OA_BASEOP_OR_UNOP (11 << OCSHIFT)
528 #define OA_FILESTATOP (12 << OCSHIFT)
529 #define OA_LOOPEXOP (13 << OCSHIFT)
533 /* Remaining nybbles of PL_opargs */
540 #define OA_SCALARREF 7
541 #define OA_OPTIONAL 8
543 /* Op_REFCNT is a reference count at the head of each op tree: needed
544 * since the tree is shared between threads, and between cloned closure
545 * copies in the same thread. OP_REFCNT_LOCK/UNLOCK is used when modifying
547 * The same mutex is used to protect the refcounts of the reg_trie_data
548 * and reg_ac_data structures, which are shared between duplicated
553 # define OP_REFCNT_INIT MUTEX_INIT(&PL_op_mutex)
555 # define OP_REFCNT_LOCK MUTEX_LOCK(&PL_op_mutex)
556 # define OP_REFCNT_UNLOCK MUTEX_UNLOCK(&PL_op_mutex)
558 # define OP_REFCNT_LOCK op_refcnt_lock()
559 # define OP_REFCNT_UNLOCK op_refcnt_unlock()
561 # define OP_REFCNT_TERM MUTEX_DESTROY(&PL_op_mutex)
563 # define OP_REFCNT_INIT NOOP
564 # define OP_REFCNT_LOCK NOOP
565 # define OP_REFCNT_UNLOCK NOOP
566 # define OP_REFCNT_TERM NOOP
569 #define OpREFCNT_set(o,n) ((o)->op_targ = (n))
570 #define OpREFCNT_inc(o) ((o) ? (++(o)->op_targ, (o)) : NULL)
571 #define OpREFCNT_dec(o) (--(o)->op_targ)
573 /* flags used by Perl_load_module() */
574 #define PERL_LOADMOD_DENY 0x1
575 #define PERL_LOADMOD_NOIMPORT 0x2
576 #define PERL_LOADMOD_IMPORT_OPS 0x4
578 #if defined(PERL_IN_PERLY_C) || defined(PERL_IN_OP_C)
579 #define ref(o, type) doref(o, type, TRUE)
582 /* no longer used anywhere in core */
584 #define cv_ckproto(cv, gv, p) \
585 cv_ckproto_len((cv), (gv), (p), (p) ? strlen(p) : 0)
588 #ifdef USE_REENTRANT_API
592 #if defined(PL_OP_SLAB_ALLOC)
593 #define NewOp(m,var,c,type) \
594 (var = (type *) Perl_Slab_Alloc(aTHX_ c*sizeof(type)))
595 #define NewOpSz(m,var,size) \
596 (var = (OP *) Perl_Slab_Alloc(aTHX_ size))
597 #define FreeOp(p) Perl_Slab_Free(aTHX_ p)
599 #define NewOp(m, var, c, type) \
600 (var = (MEM_WRAP_CHECK_(c,type) \
601 (type*)PerlMemShared_calloc(c, sizeof(type))))
602 #define NewOpSz(m, var, size) \
603 (var = (OP*)PerlMemShared_calloc(1, size))
604 #define FreeOp(p) PerlMemShared_free(p)
617 /* short mad_count; */
630 * Values that can be hold by mad_key :
631 * ^ unfilled head spot
633 * ; literal ; (blank if implicit ; at end of block)
634 * : literal : from ?: or attr list
636 * ? literal ? from ?:
646 * ! use is source filtered
648 * # whitespace/comment following ; or }
650 * 1 1st ; from for(;;)
652 * 2 2nd ; from for(;;)
655 * a sub or var attributes
656 * a non-method arrow operator
657 * A method arrow operator
660 * B retired stub block
661 * C constant conditional op
664 * e unreached "else" (see C)
665 * e expression producing E
667 * f folded constant op
668 * F peg op for format
669 * i if/unless modifier
670 * I if/elsif/unless statement
672 * l last index of array ($#foo)
674 * m modifier on regex
675 * M my assignment slurped into some other operator's target
676 * n sub or format name
677 * o current operator/declarator name
679 * O generic optimized op
680 * p peg to hold extra whitespace at statement level
681 * P peg op for package declaration
686 * r expression producing R
688 * R assign slurped by split
690 * S use import stub (no import)
691 * S retired sort block
692 * t unreached "then" (see C)
694 * v private sv of for loop
696 * w while/until modifier
697 * W while/for statement
700 * _ whitespace/comments preceding anything else