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[perl5.git] / op.h
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a0d0e21e 1/* op.h
79072805 2 *
1129b882
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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
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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 *
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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.
2814eb74
PJ
20 * op_opt Whether or not the op has been optimised by the
21 * peephole optimiser.
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DM
22 *
23 * See the comments in S_clear_yystack() for more
24 * details on the following three flags:
85594c31 25 *
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DM
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
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DM
30 * op_attached this op (sub)tree has been attached to a CV
31 *
85594c31 32 * op_spare three spare bits!
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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 */
1850c8f9 39#include "op_reg_common.h"
79072805 40
79072805 41#define OPCODE U16
79072805 42
598921a7
NC
43#ifdef PERL_MAD
44# define MADPROP_IN_BASEOP MADPROP* op_madprop;
45#else
46# define MADPROP_IN_BASEOP
47#endif
48
61a59f30 49typedef PERL_BITFIELD16 Optype;
0053d415 50
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DL
51#ifdef BASEOP_DEFINITION
52#define BASEOP BASEOP_DEFINITION
53#else
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54#define BASEOP \
55 OP* op_next; \
56 OP* op_sibling; \
4f63d024 57 OP* (CPERLscope(*op_ppaddr))(pTHX); \
598921a7 58 MADPROP_IN_BASEOP \
79072805 59 PADOFFSET op_targ; \
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JD
60 PERL_BITFIELD16 op_type:9; \
61 PERL_BITFIELD16 op_opt:1; \
62 PERL_BITFIELD16 op_latefree:1; \
63 PERL_BITFIELD16 op_latefreed:1; \
64 PERL_BITFIELD16 op_attached:1; \
65 PERL_BITFIELD16 op_spare:3; \
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66 U8 op_flags; \
67 U8 op_private;
0f4eea8f 68#endif
79072805 69
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70/* If op_type:9 is changed to :10, also change PUSHEVAL in cop.h.
71 Also, if the type of op_type is ever changed (e.g. to PERL_BITFIELD32)
72 then all the other bit-fields before/after it should change their
73 types too to let VC pack them into the same 4 byte integer.*/
17347a51 74
54310121
PP
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 : \
79 dfl)
80
2f8edad0 81#define OP_GIMME_REVERSE(flags) ((flags) & G_WANT)
4f911530 82
954c1994 83/*
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JH
84=head1 "Gimme" Values
85
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GS
86=for apidoc Amn|U32|GIMME_V
87The XSUB-writer's equivalent to Perl's C<wantarray>. Returns C<G_VOID>,
91e74348 88C<G_SCALAR> or C<G_ARRAY> for void, scalar or list context,
683d9ad1 89respectively. See L<perlcall> for a usage example.
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90
91=for apidoc Amn|U32|GIMME
92A backward-compatible version of C<GIMME_V> which can only return
93C<G_SCALAR> or C<G_ARRAY>; in a void context, it returns C<G_SCALAR>.
94Deprecated. Use C<GIMME_V> instead.
95
96=cut
97*/
98
533c011a 99#define GIMME_V OP_GIMME(PL_op, block_gimme())
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100
101/* Public flags */
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102
103#define OPf_WANT 3 /* Mask for "want" bits: */
104#define OPf_WANT_VOID 1 /* Want nothing */
105#define OPf_WANT_SCALAR 2 /* Want single value */
106#define OPf_WANT_LIST 3 /* Want list of any length */
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107#define OPf_KIDS 4 /* There is a firstborn child. */
108#define OPf_PARENS 8 /* This operator was parenthesized. */
463ee0b2 109 /* (Or block needs explicit scope entry.) */
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110#define OPf_REF 16 /* Certified reference. */
111 /* (Return container, not containee). */
112#define OPf_MOD 32 /* Will modify (lvalue). */
113#define OPf_STACKED 64 /* Some arg is arriving on the stack. */
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114#define OPf_SPECIAL 128 /* Do something weird for this op: */
115 /* On local LVAL, don't init local value. */
116 /* On OP_SORT, subroutine is inlined. */
117 /* On OP_NOT, inversion was implicit. */
a0d0e21e 118 /* On OP_LEAVE, don't restore curpm. */
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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(). */
a0d0e21e 123 /* On OP_ENTERSUB || OP_NULL, saw a "do". */
afebc493 124 /* On OP_EXISTS, treat av as av, not avhv. */
f2ec2afd 125 /* On OP_(ENTER|LEAVE)EVAL, don't clear $@ */
54b9620d 126 /* On OP_ENTERITER, loop var is per-thread */
0ac6acae 127 /* On pushre, rx is used as part of split, e.g. split " " */
497711e7 128 /* On regcomp, "use re 'eval'" was in scope */
7c6fadd6 129 /* On OP_READLINE, was <$filehandle> */
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NC
130 /* On RV2[ACGHS]V, don't create GV--in
131 defined()*/
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132 /* On OP_DBSTATE, indicates breakpoint
133 * (runtime property) */
6a077020 134 /* On OP_AELEMFAST, indiciates pad var */
6b514a0d 135 /* On OP_REQUIRE, was seen as CORE::require */
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136 /* On OP_ENTERWHEN, there's no condition */
137 /* On OP_BREAK, an implicit break */
138 /* On OP_SMARTMATCH, an implicit smartmatch */
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NC
139 /* On OP_ANONHASH and OP_ANONLIST, create a
140 reference to the new anon hash or array */
e91684bf 141 /* On OP_ENTER, store caller context */
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142 /* On OP_HELEM and OP_HSLICE, localization will be followed
143 by assignment, so do not wipe the target if it is special
144 (e.g. a glob or a magic SV) */
79072805 145
54310121 146/* old names; don't use in new code, but don't break them, either */
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147#define OPf_LIST OPf_WANT_LIST
148#define OPf_KNOW OPf_WANT
954c1994 149
54310121 150#define GIMME \
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151 (PL_op->op_flags & OPf_WANT \
152 ? ((PL_op->op_flags & OPf_WANT) == OPf_WANT_LIST \
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GS
153 ? G_ARRAY \
154 : G_SCALAR) \
155 : dowantarray())
54310121 156
51a68671 157/* NOTE: OP_NEXTSTATE and OP_DBSTATE (i.e. COPs) carry lower
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158 * bits of PL_hints in op_private */
159
a0d0e21e 160/* Private for lvalues */
cd06dffe 161#define OPpLVAL_INTRO 128 /* Lvalue must be localized or lvalue sub */
a0d0e21e 162
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163/* Private for OP_LEAVE, OP_LEAVESUB, OP_LEAVESUBLV and OP_LEAVEWRITE */
164#define OPpREFCOUNTED 64 /* op_targ carries a refcount */
165
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166/* Private for OP_AASSIGN */
167#define OPpASSIGN_COMMON 64 /* Left & right have syms in common. */
168
169/* Private for OP_SASSIGN */
170#define OPpASSIGN_BACKWARDS 64 /* Left & right switched. */
e26df76a 171#define OPpASSIGN_CV_TO_GV 128 /* Possible optimisation for constants. */
79072805 172
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173/* Private for OP_MATCH and OP_SUBST{,CONST} */
174#define OPpRUNTIME 64 /* Pattern coming in on the stack */
175
79072805 176/* Private for OP_TRANS */
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177#define OPpTRANS_FROM_UTF 1
178#define OPpTRANS_TO_UTF 2
383e7cdd 179#define OPpTRANS_IDENTICAL 4 /* right side is same as left */
4757a243 180#define OPpTRANS_SQUASH 8
59f00321 181 /* 16 is used for OPpTARGET_MY */
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182#define OPpTRANS_COMPLEMENT 32
183#define OPpTRANS_GROWS 64
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184#define OPpTRANS_DELETE 128
185#define OPpTRANS_ALL (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF|OPpTRANS_IDENTICAL|OPpTRANS_SQUASH|OPpTRANS_COMPLEMENT|OPpTRANS_GROWS|OPpTRANS_DELETE)
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186
187/* Private for OP_REPEAT */
a0d0e21e 188#define OPpREPEAT_DOLIST 64 /* List replication. */
79072805 189
cf2dc985 190/* Private for OP_RV2GV, OP_RV2SV, OP_AELEM, OP_HELEM, OP_PADSV */
314d4778 191#define OPpDEREF (32|64) /* autovivify: Want ref to something: */
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PP
192#define OPpDEREF_AV 32 /* Want ref to AV. */
193#define OPpDEREF_HV 64 /* Want ref to HV. */
194#define OPpDEREF_SV (32|64) /* Want ref to SV. */
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195/* Private for OP_RV2SV, OP_RV2AV, OP_RV2AV */
196#define OPpDEREFed 4 /* prev op was OPpDEREF */
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197 /* OP_ENTERSUB only */
198#define OPpENTERSUB_DB 16 /* Debug subroutine. */
d3011074 199#define OPpENTERSUB_HASTARG 32 /* Called from OP tree. */
95f0a2f1 200#define OPpENTERSUB_NOMOD 64 /* Immune to mod() for :attrlist. */
b900987b 201 /* OP_ENTERSUB and OP_RV2CV only */
68dc0745 202#define OPpENTERSUB_AMPER 8 /* Used & form to call. */
9675f7ac 203#define OPpENTERSUB_NOPAREN 128 /* bare sub call (without parens) */
cd06dffe 204#define OPpENTERSUB_INARGS 4 /* Lval used as arg to a sub. */
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205 /* OP_GV only */
206#define OPpEARLY_CV 32 /* foo() called before sub foo was parsed */
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207 /* OP_?ELEM only */
208#define OPpLVAL_DEFER 16 /* Defer creation of array/hash elem */
241416b8 209 /* OP_RV2?V, OP_GVSV, OP_ENTERITER only */
78f9721b 210#define OPpOUR_INTRO 16 /* Variable was in an our() */
cb0d96b9 211 /* OP_RV2[AGH]V, OP_PAD[AH]V, OP_[AH]ELEM */
78f9721b 212#define OPpMAYBE_LVSUB 8 /* We might be an lvalue to return */
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213 /* OP_PADSV only */
214#define OPpPAD_STATE 16 /* is a "state" pad */
192587c2 215 /* for OP_RV2?V, lower bits carry hints (currently only HINT_STRICT_REFS) */
79072805 216
e26df76a 217 /* OP_RV2GV only */
cb0d96b9 218#define OPpDONT_INIT_GV 4 /* Call gv_fetchpv with GV_NOINIT */
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NC
219/* (Therefore will return whatever is currently in the symbol table, not
220 guaranteed to be a PVGV) */
221
222 /* OP_RV2CV only */
223#define OPpMAY_RETURN_CONSTANT 1 /* If a constant sub, return the constant */
224
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225/* Private for OPs with TARGLEX */
226 /* (lower bits may carry MAXARG) */
227#define OPpTARGET_MY 16 /* Target is PADMY. */
228
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229/* Private for OP_ENTERITER and OP_ITER */
230#define OPpITER_REVERSED 4 /* for (reverse ...) */
0d863452 231#define OPpITER_DEF 8 /* for $_ or for my $_ */
ef3e5ea9 232
79072805 233/* Private for OP_CONST */
468aa647 234#define OPpCONST_NOVER 2 /* no 6; */
e7fec78e 235#define OPpCONST_SHORTCIRCUIT 4 /* eg the constant 5 in (5 || foo) */
7a52d87a 236#define OPpCONST_STRICT 8 /* bearword subject to strict 'subs' */
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237#define OPpCONST_ENTERED 16 /* Has been entered as symbol. */
238#define OPpCONST_ARYBASE 32 /* Was a $[ translated to constant. */
a0d0e21e 239#define OPpCONST_BARE 64 /* Was a bare word (filehandle?). */
599cee73 240#define OPpCONST_WARNING 128 /* Was a $^W translated to constant. */
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241
242/* Private for OP_FLIP/FLOP */
a0d0e21e 243#define OPpFLIP_LINENUM 64 /* Range arg potentially a line num. */
79072805 244
ed6116ce 245/* Private for OP_LIST */
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246#define OPpLIST_GUESSED 64 /* Guessed that pushmark was needed. */
247
5f05dabc 248/* Private for OP_DELETE */
54310121 249#define OPpSLICE 64 /* Operating on a list of keys */
7332a6c4 250/* Also OPpLVAL_INTRO (128) */
5f05dabc 251
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252/* Private for OP_EXISTS */
253#define OPpEXISTS_SUB 64 /* Checking for &sub, not {} or []. */
254
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JH
255/* Private for OP_SORT */
256#define OPpSORT_NUMERIC 1 /* Optimized away { $a <=> $b } */
257#define OPpSORT_INTEGER 2 /* Ditto while under "use integer" */
eb209983 258#define OPpSORT_REVERSE 4 /* Reversed sort */
fe1bc4cf 259#define OPpSORT_INPLACE 8 /* sort in-place; eg @a = sort @a */
eb209983 260#define OPpSORT_DESCEND 16 /* Descending sort */
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261#define OPpSORT_QSORT 32 /* Use quicksort (not mergesort) */
262#define OPpSORT_STABLE 64 /* Use a stable algorithm */
263
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264/* Private for OP_REVERSE */
265#define OPpREVERSE_INPLACE 8 /* reverse in-place (@a = reverse @a) */
266
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267/* Private for OP_OPEN and OP_BACKTICK */
268#define OPpOPEN_IN_RAW 16 /* binmode(F,":raw") on input fh */
269#define OPpOPEN_IN_CRLF 32 /* binmode(F,":crlf") on input fh */
270#define OPpOPEN_OUT_RAW 64 /* binmode(F,":raw") on output fh */
271#define OPpOPEN_OUT_CRLF 128 /* binmode(F,":crlf") on output fh */
272
96e176bf
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273/* Private for OP_EXIT, HUSH also for OP_DIE */
274#define OPpHUSH_VMSISH 64 /* hush DCL exit msg vmsish mode*/
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275#define OPpEXIT_VMSISH 128 /* exit(0) vs. exit(1) vmsish mode*/
276
0d863452 277/* Private for OP_FTXXX */
1af34c76 278#define OPpFT_ACCESS 2 /* use filetest 'access' */
fbb0b3b3 279#define OPpFT_STACKED 4 /* stacked filetest, as in "-f -x $f" */
1af34c76 280
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281/* Private for OP_(MAP|GREP)(WHILE|START) */
282#define OPpGREP_LEX 2 /* iterate over lexical $_ */
283
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284/* Private for OP_ENTEREVAL */
285#define OPpEVAL_HAS_HH 2 /* Does it have a copy of %^H */
286
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287struct op {
288 BASEOP
289};
290
291struct unop {
292 BASEOP
293 OP * op_first;
294};
295
296struct binop {
297 BASEOP
298 OP * op_first;
299 OP * op_last;
300};
301
302struct logop {
303 BASEOP
304 OP * op_first;
305 OP * op_other;
306};
307
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308struct listop {
309 BASEOP
310 OP * op_first;
311 OP * op_last;
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312};
313
314struct pmop {
315 BASEOP
316 OP * op_first;
317 OP * op_last;
1fcf4c12 318#ifdef USE_ITHREADS
fd1bc7eb 319 IV op_pmoffset;
1fcf4c12
AB
320#else
321 REGEXP * op_pmregexp; /* compiled expression */
322#endif
69bdead3 323 U32 op_pmflags;
29f2e912 324 union {
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NC
325 OP * op_pmreplroot; /* For OP_SUBST */
326#ifdef USE_ITHREADS
327 PADOFFSET op_pmtargetoff; /* For OP_PUSHRE */
328#else
329 GV * op_pmtargetgv;
330#endif
331 } op_pmreplrootu;
332 union {
29f2e912 333 OP * op_pmreplstart; /* Only used in OP_SUBST */
cb55de95 334#ifdef USE_ITHREADS
29f2e912 335 char * op_pmstashpv; /* Only used in OP_MATCH, with PMf_ONCE set */
cb55de95 336#else
29f2e912 337 HV * op_pmstash;
cb55de95 338#endif
29f2e912 339 } op_pmstashstartu;
79072805 340};
a0d0e21e 341
1fcf4c12 342#ifdef USE_ITHREADS
14a49a24
NC
343#define PM_GETRE(o) (SvTYPE(PL_regex_pad[(o)->op_pmoffset]) == SVt_REGEXP \
344 ? (REGEXP*)(PL_regex_pad[(o)->op_pmoffset]) : NULL)
ede1273d
NC
345/* The assignment is just to enforce type safety (or at least get a warning).
346 */
14a49a24
NC
347/* With first class regexps not via a reference one needs to assign
348 &PL_sv_undef under ithreads. (This would probably work unthreaded, but NULL
349 is cheaper. I guess we could allow NULL, but the check above would get
350 more complex, and we'd have an AV with (SV*)NULL in it, which feels bad */
351/* BEWARE - something that calls this macro passes (r) which has a side
352 effect. */
ede1273d 353#define PM_SETRE(o,r) STMT_START { \
b1bc3f34 354 REGEXP *const _pm_setre = (r); \
7948fc08 355 assert(_pm_setre); \
b1bc3f34 356 PL_regex_pad[(o)->op_pmoffset] = MUTABLE_SV(_pm_setre); \
ede1273d 357 } STMT_END
1fcf4c12 358#else
b9ed2502
AB
359#define PM_GETRE(o) ((o)->op_pmregexp)
360#define PM_SETRE(o,r) ((o)->op_pmregexp = (r))
1fcf4c12 361#endif
4825b64b 362
beae72ee
KW
363/* Leave some space, so future bit allocations can go either in the shared or
364 * unshared area without affecting binary compatibility */
365#define PMf_BASE_SHIFT (_RXf_PMf_SHIFT_NEXT+8)
f4a4cecb 366
1850c8f9 367/* taint $1 etc. if target tainted */
1ad4ec54 368#define PMf_RETAINT (1<<(PMf_BASE_SHIFT+0))
c737faaf 369
c0f1c194
KW
370/* match successfully only once per reset, with related flag RXf_USED in
371 * re->extflags holding state. This is used only for ?? matches, and only on
372 * OP_MATCH and OP_QR */
1ad4ec54 373#define PMf_ONCE (1<<(PMf_BASE_SHIFT+1))
1850c8f9
KW
374
375/* replacement contains variables */
1ad4ec54 376#define PMf_MAYBE_CONST (1<<(PMf_BASE_SHIFT+2))
1850c8f9
KW
377
378/* PMf_ONCE has matched successfully. Not used under threading. */
1ad4ec54 379#define PMf_USED (1<<(PMf_BASE_SHIFT+3))
1850c8f9
KW
380
381/* subst replacement is constant */
1ad4ec54 382#define PMf_CONST (1<<(PMf_BASE_SHIFT+4))
c737faaf 383
1850c8f9 384/* keep 1st runtime pattern forever */
1ad4ec54
KW
385#define PMf_KEEP (1<<(PMf_BASE_SHIFT+5))
386#define PMf_GLOBAL (1<<(PMf_BASE_SHIFT+6)) /* pattern had a g modifier */
c737faaf 387
1850c8f9 388/* don't reset pos() if //g fails */
1ad4ec54 389#define PMf_CONTINUE (1<<(PMf_BASE_SHIFT+7))
1850c8f9
KW
390
391/* evaluating replacement as expr */
1ad4ec54 392#define PMf_EVAL (1<<(PMf_BASE_SHIFT+8))
c0f1c194
KW
393
394/* Return substituted string instead of modifying it. */
1ad4ec54 395#define PMf_NONDESTRUCT (1<<(PMf_BASE_SHIFT+9))
e357fc67 396
1ad4ec54 397#if PMf_BASE_SHIFT+9 > 31
32cdcf9d 398# error Too many PMf_ bits used. See above and regnodes.h for any spare in middle
1850c8f9 399#endif
79072805 400
cb55de95 401#ifdef USE_ITHREADS
05ec9bb3 402
29f2e912
NC
403# define PmopSTASHPV(o) \
404 (((o)->op_pmflags & PMf_ONCE) ? (o)->op_pmstashstartu.op_pmstashpv : NULL)
405# if defined (DEBUGGING) && defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN)
406# define PmopSTASHPV_set(o,pv) ({ \
407 assert((o)->op_pmflags & PMf_ONCE); \
408 ((o)->op_pmstashstartu.op_pmstashpv = savesharedpv(pv)); \
409 })
410# else
411# define PmopSTASHPV_set(o,pv) \
412 ((o)->op_pmstashstartu.op_pmstashpv = savesharedpv(pv))
413# endif
cb55de95 414# define PmopSTASH(o) (PmopSTASHPV(o) \
29f2e912 415 ? gv_stashpv((o)->op_pmstashstartu.op_pmstashpv,GV_ADD) : NULL)
bd61b366 416# define PmopSTASH_set(o,hv) PmopSTASHPV_set(o, ((hv) ? HvNAME_get(hv) : NULL))
05ec9bb3
NIS
417# define PmopSTASH_free(o) PerlMemShared_free(PmopSTASHPV(o))
418
cb55de95 419#else
29f2e912
NC
420# define PmopSTASH(o) \
421 (((o)->op_pmflags & PMf_ONCE) ? (o)->op_pmstashstartu.op_pmstash : NULL)
422# if defined (DEBUGGING) && defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN)
423# define PmopSTASH_set(o,hv) ({ \
424 assert((o)->op_pmflags & PMf_ONCE); \
425 ((o)->op_pmstashstartu.op_pmstash = (hv)); \
426 })
427# else
428# define PmopSTASH_set(o,hv) ((o)->op_pmstashstartu.op_pmstash = (hv))
429# endif
bd61b366 430# define PmopSTASHPV(o) (PmopSTASH(o) ? HvNAME_get(PmopSTASH(o)) : NULL)
29f2e912 431 /* op_pmstashstartu.op_pmstash is not refcounted */
cb55de95 432# define PmopSTASHPV_set(o,pv) PmopSTASH_set((o), gv_stashpv(pv,GV_ADD))
c4bd3ae5
NC
433/* Note that if this becomes non-empty, then S_forget_pmop in op.c will need
434 changing */
05ec9bb3 435# define PmopSTASH_free(o)
cb55de95
JH
436#endif
437
79072805
LW
438struct svop {
439 BASEOP
440 SV * op_sv;
441};
442
7934575e 443struct padop {
79072805 444 BASEOP
7934575e 445 PADOFFSET op_padix;
79072805
LW
446};
447
448struct pvop {
449 BASEOP
450 char * op_pv;
451};
452
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LW
453struct loop {
454 BASEOP
455 OP * op_first;
456 OP * op_last;
79072805
LW
457 OP * op_redoop;
458 OP * op_nextop;
459 OP * op_lastop;
460};
461
350de78d
GS
462#define cUNOPx(o) ((UNOP*)o)
463#define cBINOPx(o) ((BINOP*)o)
464#define cLISTOPx(o) ((LISTOP*)o)
465#define cLOGOPx(o) ((LOGOP*)o)
466#define cPMOPx(o) ((PMOP*)o)
467#define cSVOPx(o) ((SVOP*)o)
468#define cPADOPx(o) ((PADOP*)o)
469#define cPVOPx(o) ((PVOP*)o)
470#define cCOPx(o) ((COP*)o)
471#define cLOOPx(o) ((LOOP*)o)
472
473#define cUNOP cUNOPx(PL_op)
474#define cBINOP cBINOPx(PL_op)
475#define cLISTOP cLISTOPx(PL_op)
476#define cLOGOP cLOGOPx(PL_op)
477#define cPMOP cPMOPx(PL_op)
478#define cSVOP cSVOPx(PL_op)
479#define cPADOP cPADOPx(PL_op)
480#define cPVOP cPVOPx(PL_op)
481#define cCOP cCOPx(PL_op)
482#define cLOOP cLOOPx(PL_op)
483
484#define cUNOPo cUNOPx(o)
485#define cBINOPo cBINOPx(o)
486#define cLISTOPo cLISTOPx(o)
487#define cLOGOPo cLOGOPx(o)
488#define cPMOPo cPMOPx(o)
489#define cSVOPo cSVOPx(o)
490#define cPADOPo cPADOPx(o)
491#define cPVOPo cPVOPx(o)
492#define cCOPo cCOPx(o)
493#define cLOOPo cLOOPx(o)
494
495#define kUNOP cUNOPx(kid)
496#define kBINOP cBINOPx(kid)
497#define kLISTOP cLISTOPx(kid)
498#define kLOGOP cLOGOPx(kid)
499#define kPMOP cPMOPx(kid)
500#define kSVOP cSVOPx(kid)
501#define kPADOP cPADOPx(kid)
502#define kPVOP cPVOPx(kid)
503#define kCOP cCOPx(kid)
504#define kLOOP cLOOPx(kid)
505
506
507#ifdef USE_ITHREADS
dd2155a4 508# define cGVOPx_gv(o) ((GV*)PAD_SVl(cPADOPx(o)->op_padix))
cecf5685
NC
509# define IS_PADGV(v) (v && SvTYPE(v) == SVt_PVGV && isGV_with_GP(v) \
510 && GvIN_PAD(v))
7766f137
GS
511# define IS_PADCONST(v) (v && SvREADONLY(v))
512# define cSVOPx_sv(v) (cSVOPx(v)->op_sv \
dd2155a4 513 ? cSVOPx(v)->op_sv : PAD_SVl((v)->op_targ))
638eceb6 514# define cSVOPx_svp(v) (cSVOPx(v)->op_sv \
dd2155a4 515 ? &cSVOPx(v)->op_sv : &PAD_SVl((v)->op_targ))
350de78d 516#else
638eceb6 517# define cGVOPx_gv(o) ((GV*)cSVOPx(o)->op_sv)
743e66e6 518# define IS_PADGV(v) FALSE
7766f137
GS
519# define IS_PADCONST(v) FALSE
520# define cSVOPx_sv(v) (cSVOPx(v)->op_sv)
638eceb6 521# define cSVOPx_svp(v) (&cSVOPx(v)->op_sv)
350de78d 522#endif
79072805 523
638eceb6
GS
524#define cGVOP_gv cGVOPx_gv(PL_op)
525#define cGVOPo_gv cGVOPx_gv(o)
526#define kGVOP_gv cGVOPx_gv(kid)
527#define cSVOP_sv cSVOPx_sv(PL_op)
528#define cSVOPo_sv cSVOPx_sv(o)
529#define kSVOP_sv cSVOPx_sv(kid)
7766f137 530
bcabcc50
NC
531#ifndef PERL_CORE
532# define Nullop ((OP*)NULL)
533#endif
79072805 534
91135acb 535/* Lowest byte-and-a-bit of PL_opargs */
a0d0e21e
LW
536#define OA_MARK 1
537#define OA_FOLDCONST 2
538#define OA_RETSCALAR 4
539#define OA_TARGET 8
540#define OA_RETINTEGER 16
541#define OA_OTHERINT 32
542#define OA_DANGEROUS 64
543#define OA_DEFGV 128
b162f9ea 544#define OA_TARGLEX 256
a0d0e21e 545
db173bac 546/* The next 4 bits encode op class information */
b162f9ea
IZ
547#define OCSHIFT 9
548
549#define OA_CLASS_MASK (15 << OCSHIFT)
550
551#define OA_BASEOP (0 << OCSHIFT)
552#define OA_UNOP (1 << OCSHIFT)
553#define OA_BINOP (2 << OCSHIFT)
554#define OA_LOGOP (3 << OCSHIFT)
1a67a97c
SM
555#define OA_LISTOP (4 << OCSHIFT)
556#define OA_PMOP (5 << OCSHIFT)
557#define OA_SVOP (6 << OCSHIFT)
7934575e 558#define OA_PADOP (7 << OCSHIFT)
1a67a97c
SM
559#define OA_PVOP_OR_SVOP (8 << OCSHIFT)
560#define OA_LOOP (9 << OCSHIFT)
561#define OA_COP (10 << OCSHIFT)
562#define OA_BASEOP_OR_UNOP (11 << OCSHIFT)
563#define OA_FILESTATOP (12 << OCSHIFT)
564#define OA_LOOPEXOP (13 << OCSHIFT)
b162f9ea
IZ
565
566#define OASHIFT 13
a0d0e21e 567
4369b173 568/* Remaining nybbles of PL_opargs */
a0d0e21e
LW
569#define OA_SCALAR 1
570#define OA_LIST 2
571#define OA_AVREF 3
572#define OA_HVREF 4
573#define OA_CVREF 5
574#define OA_FILEREF 6
575#define OA_SCALARREF 7
576#define OA_OPTIONAL 8
577
d3c72c2a
DM
578/* Op_REFCNT is a reference count at the head of each op tree: needed
579 * since the tree is shared between threads, and between cloned closure
580 * copies in the same thread. OP_REFCNT_LOCK/UNLOCK is used when modifying
581 * this count.
582 * The same mutex is used to protect the refcounts of the reg_trie_data
583 * and reg_ac_data structures, which are shared between duplicated
584 * regexes.
585 */
586
534825c4
GS
587#ifdef USE_ITHREADS
588# define OP_REFCNT_INIT MUTEX_INIT(&PL_op_mutex)
4026c95a
SH
589# ifdef PERL_CORE
590# define OP_REFCNT_LOCK MUTEX_LOCK(&PL_op_mutex)
591# define OP_REFCNT_UNLOCK MUTEX_UNLOCK(&PL_op_mutex)
592# else
593# define OP_REFCNT_LOCK op_refcnt_lock()
594# define OP_REFCNT_UNLOCK op_refcnt_unlock()
595# endif
534825c4 596# define OP_REFCNT_TERM MUTEX_DESTROY(&PL_op_mutex)
534825c4
GS
597#else
598# define OP_REFCNT_INIT NOOP
599# define OP_REFCNT_LOCK NOOP
600# define OP_REFCNT_UNLOCK NOOP
601# define OP_REFCNT_TERM NOOP
534825c4 602#endif
e4783991 603
282f25c9 604#define OpREFCNT_set(o,n) ((o)->op_targ = (n))
fc97af9c
NC
605#ifdef PERL_DEBUG_READONLY_OPS
606# define OpREFCNT_inc(o) Perl_op_refcnt_inc(aTHX_ o)
607# define OpREFCNT_dec(o) Perl_op_refcnt_dec(aTHX_ o)
608#else
609# define OpREFCNT_inc(o) ((o) ? (++(o)->op_targ, (o)) : NULL)
610# define OpREFCNT_dec(o) (--(o)->op_targ)
611#endif
282f25c9 612
e4783991 613/* flags used by Perl_load_module() */
ec6d81ab
RGS
614#define PERL_LOADMOD_DENY 0x1 /* no Module */
615#define PERL_LOADMOD_NOIMPORT 0x2 /* use Module () */
616#define PERL_LOADMOD_IMPORT_OPS 0x4 /* use Module (...) */
e5dd39fc 617
a0c21aa1 618#if defined(PERL_IN_PERLY_C) || defined(PERL_IN_OP_C)
e4c5ccf3 619#define ref(o, type) doref(o, type, TRUE)
a0c21aa1 620#endif
e4c5ccf3 621
33f36c71
NC
622/* no longer used anywhere in core */
623#ifndef PERL_CORE
46471bde
NC
624#define cv_ckproto(cv, gv, p) \
625 cv_ckproto_len((cv), (gv), (p), (p) ? strlen(p) : 0)
33f36c71
NC
626#endif
627
7d0905b9
NC
628#ifdef PERL_CORE
629# define my(o) my_attrs((o), NULL)
630#endif
631
e5dd39fc 632#ifdef USE_REENTRANT_API
10bc17b6 633#include "reentr.h"
e5dd39fc
AB
634#endif
635
c7e45529
AE
636#if defined(PL_OP_SLAB_ALLOC)
637#define NewOp(m,var,c,type) \
e91d68d5 638 (var = (type *) Perl_Slab_Alloc(aTHX_ c*sizeof(type)))
c7e45529 639#define NewOpSz(m,var,size) \
e91d68d5 640 (var = (OP *) Perl_Slab_Alloc(aTHX_ size))
c7e45529
AE
641#define FreeOp(p) Perl_Slab_Free(aTHX_ p)
642#else
04e62e51
NC
643#define NewOp(m, var, c, type) \
644 (var = (MEM_WRAP_CHECK_(c,type) \
645 (type*)PerlMemShared_calloc(c, sizeof(type))))
113b9ccf 646#define NewOpSz(m, var, size) \
04e62e51
NC
647 (var = (OP*)PerlMemShared_calloc(1, size))
648#define FreeOp(p) PerlMemShared_free(p)
c7e45529 649#endif
598921a7 650
1930840b 651struct block_hooks {
52db365a 652 U32 bhk_flags;
1930840b
BM
653 void (*bhk_start) (pTHX_ int full);
654 void (*bhk_pre_end) (pTHX_ OP **seq);
655 void (*bhk_post_end) (pTHX_ OP **seq);
52db365a 656 void (*bhk_eval) (pTHX_ OP *const saveop);
1930840b
BM
657};
658
fd85fad2
BM
659/*
660=head1 Compile-time scope hooks
661
662=for apidoc m|U32|BhkFLAGS|BHK *hk
663Return the BHK's flags.
664
665=for apidoc m|void *|BhkENTRY|BHK *hk|which
666Return an entry from the BHK structure. I<which> is a preprocessor token
667indicating which entry to return. If the appropriate flag is not set
668this will return NULL. The type of the return value depends on which
669entry you ask for.
670
671=for apidoc Am|void|BhkENTRY_set|BHK *hk|which|void *ptr
672Set an entry in the BHK structure, and set the flags to indicate it is
673valid. I<which> is a preprocessing token indicating which entry to set.
674The type of I<ptr> depends on the entry.
675
a3e07c87
BM
676=for apidoc Am|void|BhkDISABLE|BHK *hk|which
677Temporarily disable an entry in this BHK structure, by clearing the
678appropriate flag. I<which> is a preprocessor token indicating which
679entry to disable.
680
681=for apidoc Am|void|BhkENABLE|BHK *hk|which
682Re-enable an entry in this BHK structure, by setting the appropriate
683flag. I<which> is a preprocessor token indicating which entry to enable.
684This will assert (under -DDEBUGGING) if the entry doesn't contain a valid
685pointer.
686
fd85fad2
BM
687=for apidoc m|void|CALL_BLOCK_HOOKS|which|arg
688Call all the registered block hooks for type I<which>. I<which> is a
689preprocessing token; the type of I<arg> depends on I<which>.
690
691=cut
692*/
693
52db365a
BM
694#define BhkFLAGS(hk) ((hk)->bhk_flags)
695
696#define BHKf_start 0x01
697#define BHKf_pre_end 0x02
698#define BHKf_post_end 0x04
699#define BHKf_eval 0x08
700
701#define BhkENTRY(hk, which) \
702 ((BhkFLAGS(hk) & BHKf_ ## which) ? ((hk)->bhk_ ## which) : NULL)
703
a3e07c87
BM
704#define BhkENABLE(hk, which) \
705 STMT_START { \
706 BhkFLAGS(hk) |= BHKf_ ## which; \
707 assert(BhkENTRY(hk, which)); \
708 } STMT_END
709
710#define BhkDISABLE(hk, which) \
711 STMT_START { \
712 BhkFLAGS(hk) &= ~(BHKf_ ## which); \
713 } STMT_END
714
52db365a
BM
715#define BhkENTRY_set(hk, which, ptr) \
716 STMT_START { \
717 (hk)->bhk_ ## which = ptr; \
a3e07c87 718 BhkENABLE(hk, which); \
52db365a
BM
719 } STMT_END
720
1930840b
BM
721#define CALL_BLOCK_HOOKS(which, arg) \
722 STMT_START { \
723 if (PL_blockhooks) { \
724 I32 i; \
725 for (i = av_len(PL_blockhooks); i >= 0; i--) { \
726 SV *sv = AvARRAY(PL_blockhooks)[i]; \
52db365a 727 BHK *hk; \
1930840b
BM
728 \
729 assert(SvIOK(sv)); \
730 if (SvUOK(sv)) \
52db365a 731 hk = INT2PTR(BHK *, SvUVX(sv)); \
1930840b 732 else \
52db365a 733 hk = INT2PTR(BHK *, SvIVX(sv)); \
1930840b 734 \
52db365a
BM
735 if (BhkENTRY(hk, which)) \
736 CALL_FPTR(BhkENTRY(hk, which))(aTHX_ arg); \
1930840b
BM
737 } \
738 } \
739 } STMT_END
740
598921a7
NC
741#ifdef PERL_MAD
742# define MAD_NULL 1
743# define MAD_PV 2
744# define MAD_OP 3
745# define MAD_SV 4
746
747struct madprop {
748 MADPROP* mad_next;
d503a9ba 749 void *mad_val;
598921a7
NC
750 U32 mad_vlen;
751/* short mad_count; */
752 char mad_key;
753 char mad_type;
754};
755
756struct token {
757 I32 tk_type;
758 YYSTYPE tk_lval;
759 MADPROP* tk_mad;
760};
761#endif
2d910ff8
RGS
762
763/*
2b3def87 764 * Values that can be held by mad_key :
2d910ff8
RGS
765 * ^ unfilled head spot
766 * , literal ,
767 * ; literal ; (blank if implicit ; at end of block)
768 * : literal : from ?: or attr list
769 * + unary +
770 * ? literal ? from ?:
771 * ( literal (
772 * ) literal )
773 * [ literal [
774 * ] literal ]
775 * { literal {
776 * } literal }
777 * @ literal @ sigil
778 * $ literal $ sigil
779 * * literal * sigil
780 * ! use is source filtered
781 * & & or sub
782 * # whitespace/comment following ; or }
783 * # $# sigil
784 * 1 1st ; from for(;;)
785 * 1 retired protasis
786 * 2 2nd ; from for(;;)
787 * 2 retired apodosis
788 * 3 C-style for list
789 * a sub or var attributes
790 * a non-method arrow operator
791 * A method arrow operator
792 * A use import args
793 * b format block
794 * B retired stub block
795 * C constant conditional op
796 * d declarator
797 * D do block
798 * e unreached "else" (see C)
799 * e expression producing E
800 * E tr/E/R/, /E/
801 * f folded constant op
802 * F peg op for format
63575281 803 * g op was forced to be a word
2d910ff8
RGS
804 * i if/unless modifier
805 * I if/elsif/unless statement
dde83331 806 * k local declarator
2d910ff8
RGS
807 * K retired kid op
808 * l last index of array ($#foo)
809 * L label
810 * m modifier on regex
2d910ff8
RGS
811 * n sub or format name
812 * o current operator/declarator name
813 * o else/continue
814 * O generic optimized op
815 * p peg to hold extra whitespace at statement level
816 * P peg op for package declaration
817 * q opening quote
818 * = quoted material
819 * Q closing quote
820 * Q optimized qw//
821 * r expression producing R
822 * R tr/E/R/ s/E/R/
2d910ff8
RGS
823 * s sub signature
824 * S use import stub (no import)
825 * S retired sort block
826 * t unreached "then" (see C)
827 * U use import op
828 * v private sv of for loop
829 * V use version
830 * w while/until modifier
831 * W while/for statement
832 * x optimized qw
833 * X random thing
834 * _ whitespace/comments preceding anything else
835 * ~ =~ operator
836 */
3f2908ec
NC
837
838/*
839 * Local variables:
840 * c-indentation-style: bsd
841 * c-basic-offset: 4
842 * indent-tabs-mode: t
843 * End:
844 *
845 * ex: set ts=8 sts=4 sw=4 noet:
846 */