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restore ExtUtils-ParseXS portability to Perl 5.6
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a0d0e21e 1/* op.h
79072805 2 *
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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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22 *
23 * See the comments in S_clear_yystack() for more
24 * details on the following three flags:
85594c31 25 *
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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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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
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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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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; \
16c91539 57 OP* (*op_ppaddr)(pTHX); \
598921a7 58 MADPROP_IN_BASEOP \
79072805 59 PADOFFSET op_targ; \
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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
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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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84=head1 "Gimme" Values
85
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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 $@ */
0ac6acae 126 /* On pushre, rx is used as part of split, e.g. split " " */
497711e7 127 /* On regcomp, "use re 'eval'" was in scope */
7c6fadd6 128 /* On OP_READLINE, was <$filehandle> */
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129 /* On RV2[ACGHS]V, don't create GV--in
130 defined()*/
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131 /* On OP_DBSTATE, indicates breakpoint
132 * (runtime property) */
6b514a0d 133 /* On OP_REQUIRE, was seen as CORE::require */
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134 /* On OP_(ENTER|LEAVE)WHEN, there's
135 no condition */
0d863452 136 /* On OP_SMARTMATCH, an implicit smartmatch */
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137 /* On OP_ANONHASH and OP_ANONLIST, create a
138 reference to the new anon hash or array */
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139 /* On OP_HELEM and OP_HSLICE, localization will be followed
140 by assignment, so do not wipe the target if it is special
141 (e.g. a glob or a magic SV) */
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142 /* On OP_MATCH, OP_SUBST & OP_TRANS, the
143 operand of a logical or conditional
144 that was optimised away, so it should
145 not be bound via =~ */
6b7c6d95 146 /* On OP_CONST, from a constant CV */
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147 /* On OP_GLOB, two meanings:
148 - Before ck_glob, called as CORE::glob
149 - After ck_glob, use Perl glob function
150 */
79072805 151
54310121 152/* old names; don't use in new code, but don't break them, either */
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153#define OPf_LIST OPf_WANT_LIST
154#define OPf_KNOW OPf_WANT
954c1994 155
54310121 156#define GIMME \
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157 (PL_op->op_flags & OPf_WANT \
158 ? ((PL_op->op_flags & OPf_WANT) == OPf_WANT_LIST \
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159 ? G_ARRAY \
160 : G_SCALAR) \
161 : dowantarray())
54310121 162
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163/* Lower bits of op_private often carry the number of arguments, as
164 * set by newBINOP, newUNOP and ck_fun */
165
51a68671 166/* NOTE: OP_NEXTSTATE and OP_DBSTATE (i.e. COPs) carry lower
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167 * bits of PL_hints in op_private */
168
a0d0e21e 169/* Private for lvalues */
cd06dffe 170#define OPpLVAL_INTRO 128 /* Lvalue must be localized or lvalue sub */
a0d0e21e 171
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172/* Private for OPs with TARGLEX */
173 /* (lower bits may carry MAXARG) */
174#define OPpTARGET_MY 16 /* Target is PADMY. */
175
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176/* Private for OP_LEAVE, OP_LEAVESUB, OP_LEAVESUBLV and OP_LEAVEWRITE */
177#define OPpREFCOUNTED 64 /* op_targ carries a refcount */
178
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179/* Private for OP_AASSIGN */
180#define OPpASSIGN_COMMON 64 /* Left & right have syms in common. */
181
182/* Private for OP_SASSIGN */
183#define OPpASSIGN_BACKWARDS 64 /* Left & right switched. */
e26df76a 184#define OPpASSIGN_CV_TO_GV 128 /* Possible optimisation for constants. */
79072805 185
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186/* Private for OP_MATCH and OP_SUBST{,CONST} */
187#define OPpRUNTIME 64 /* Pattern coming in on the stack */
188
79072805 189/* Private for OP_TRANS */
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190#define OPpTRANS_FROM_UTF 1
191#define OPpTRANS_TO_UTF 2
383e7cdd 192#define OPpTRANS_IDENTICAL 4 /* right side is same as left */
4757a243 193#define OPpTRANS_SQUASH 8
59f00321 194 /* 16 is used for OPpTARGET_MY */
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195#define OPpTRANS_COMPLEMENT 32
196#define OPpTRANS_GROWS 64
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197#define OPpTRANS_DELETE 128
198#define OPpTRANS_ALL (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF|OPpTRANS_IDENTICAL|OPpTRANS_SQUASH|OPpTRANS_COMPLEMENT|OPpTRANS_GROWS|OPpTRANS_DELETE)
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199
200/* Private for OP_REPEAT */
a0d0e21e 201#define OPpREPEAT_DOLIST 64 /* List replication. */
79072805 202
cf2dc985 203/* Private for OP_RV2GV, OP_RV2SV, OP_AELEM, OP_HELEM, OP_PADSV */
314d4778 204#define OPpDEREF (32|64) /* autovivify: Want ref to something: */
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PP
205#define OPpDEREF_AV 32 /* Want ref to AV. */
206#define OPpDEREF_HV 64 /* Want ref to HV. */
207#define OPpDEREF_SV (32|64) /* Want ref to SV. */
777d9014 208
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209 /* OP_ENTERSUB only */
210#define OPpENTERSUB_DB 16 /* Debug subroutine. */
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211#define OPpENTERSUB_HASTARG 4 /* Called from OP tree. */
212#define OPpENTERSUB_INARGS 1 /* Lval used as arg to a sub. */
0e9700df 213/* used by OPpDEREF (32|64) */
1dafeec8 214/* used by HINT_STRICT_SUBS 2 */
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215 /* Mask for OP_ENTERSUB flags, the absence of which must be propagated
216 in dynamic context */
217#define OPpENTERSUB_LVAL_MASK (OPpLVAL_INTRO|OPpENTERSUB_INARGS)
218
d4ddbae8 219 /* OP_RV2CV only */
68dc0745 220#define OPpENTERSUB_AMPER 8 /* Used & form to call. */
9675f7ac 221#define OPpENTERSUB_NOPAREN 128 /* bare sub call (without parens) */
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222#define OPpMAY_RETURN_CONSTANT 1 /* If a constant sub, return the constant */
223
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224 /* OP_GV only */
225#define OPpEARLY_CV 32 /* foo() called before sub foo was parsed */
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226 /* OP_?ELEM only */
227#define OPpLVAL_DEFER 16 /* Defer creation of array/hash elem */
8dc99089 228 /* OP_RV2[SAH]V, OP_GVSV, OP_ENTERITER only */
78f9721b 229#define OPpOUR_INTRO 16 /* Variable was in an our() */
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230 /* OP_RV2[AGH]V, OP_PAD[AH]V, OP_[AH]ELEM, OP_[AH]SLICE OP_AV2ARYLEN,
231 OP_R?KEYS, OP_SUBSTR, OP_POS, OP_VEC */
78f9721b 232#define OPpMAYBE_LVSUB 8 /* We might be an lvalue to return */
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233
234 /* OP_SUBSTR only */
235#define OPpSUBSTR_REPL_FIRST 16 /* 1st arg is replacement string */
236
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237 /* OP_PADSV only */
238#define OPpPAD_STATE 16 /* is a "state" pad */
192587c2 239 /* for OP_RV2?V, lower bits carry hints (currently only HINT_STRICT_REFS) */
79072805 240
e26df76a 241 /* OP_RV2GV only */
cb0d96b9 242#define OPpDONT_INIT_GV 4 /* Call gv_fetchpv with GV_NOINIT */
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243/* (Therefore will return whatever is currently in the symbol table, not
244 guaranteed to be a PVGV) */
8dc99089 245#define OPpALLOW_FAKE 16 /* OK to return fake glob */
e26df76a 246
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NC
247/* Private for OP_ENTERITER and OP_ITER */
248#define OPpITER_REVERSED 4 /* for (reverse ...) */
0d863452 249#define OPpITER_DEF 8 /* for $_ or for my $_ */
ef3e5ea9 250
79072805 251/* Private for OP_CONST */
468aa647 252#define OPpCONST_NOVER 2 /* no 6; */
e7fec78e 253#define OPpCONST_SHORTCIRCUIT 4 /* eg the constant 5 in (5 || foo) */
486ec47a 254#define OPpCONST_STRICT 8 /* bareword subject to strict 'subs' */
748a9306 255#define OPpCONST_ENTERED 16 /* Has been entered as symbol. */
a0d0e21e 256#define OPpCONST_BARE 64 /* Was a bare word (filehandle?). */
599cee73 257#define OPpCONST_WARNING 128 /* Was a $^W translated to constant. */
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258
259/* Private for OP_FLIP/FLOP */
a0d0e21e 260#define OPpFLIP_LINENUM 64 /* Range arg potentially a line num. */
79072805 261
ed6116ce 262/* Private for OP_LIST */
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263#define OPpLIST_GUESSED 64 /* Guessed that pushmark was needed. */
264
5f05dabc 265/* Private for OP_DELETE */
54310121 266#define OPpSLICE 64 /* Operating on a list of keys */
7332a6c4 267/* Also OPpLVAL_INTRO (128) */
5f05dabc 268
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269/* Private for OP_EXISTS */
270#define OPpEXISTS_SUB 64 /* Checking for &sub, not {} or []. */
271
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272/* Private for OP_SORT */
273#define OPpSORT_NUMERIC 1 /* Optimized away { $a <=> $b } */
274#define OPpSORT_INTEGER 2 /* Ditto while under "use integer" */
eb209983 275#define OPpSORT_REVERSE 4 /* Reversed sort */
fe1bc4cf 276#define OPpSORT_INPLACE 8 /* sort in-place; eg @a = sort @a */
eb209983 277#define OPpSORT_DESCEND 16 /* Descending sort */
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278#define OPpSORT_QSORT 32 /* Use quicksort (not mergesort) */
279#define OPpSORT_STABLE 64 /* Use a stable algorithm */
280
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281/* Private for OP_REVERSE */
282#define OPpREVERSE_INPLACE 8 /* reverse in-place (@a = reverse @a) */
283
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284/* Private for OP_OPEN and OP_BACKTICK */
285#define OPpOPEN_IN_RAW 16 /* binmode(F,":raw") on input fh */
286#define OPpOPEN_IN_CRLF 32 /* binmode(F,":crlf") on input fh */
287#define OPpOPEN_OUT_RAW 64 /* binmode(F,":raw") on output fh */
288#define OPpOPEN_OUT_CRLF 128 /* binmode(F,":crlf") on output fh */
289
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290/* Private for OP_EXIT, HUSH also for OP_DIE */
291#define OPpHUSH_VMSISH 64 /* hush DCL exit msg vmsish mode*/
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292#define OPpEXIT_VMSISH 128 /* exit(0) vs. exit(1) vmsish mode*/
293
0d863452 294/* Private for OP_FTXXX */
1af34c76 295#define OPpFT_ACCESS 2 /* use filetest 'access' */
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GG
296#define OPpFT_STACKED 4 /* stacked filetest, as "-f" in "-f -x $f" */
297#define OPpFT_STACKING 8 /* stacking filetest, as "-x" in "-f -x $f" */
8db8f6b6 298#define OPpFT_AFTER_t 16 /* previous op was -t */
1af34c76 299
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300/* Private for OP_(MAP|GREP)(WHILE|START) */
301#define OPpGREP_LEX 2 /* iterate over lexical $_ */
302
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303/* Private for OP_ENTEREVAL */
304#define OPpEVAL_HAS_HH 2 /* Does it have a copy of %^H */
802a15e9 305#define OPpEVAL_UNICODE 4
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FC
306#define OPpEVAL_BYTES 8
307#define OPpEVAL_COPHH 16 /* Construct %^H from cop hints */
0d863452 308
84ed0108 309/* Private for OP_CALLER, OP_WANTARRAY and OP_RUNCV */
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FC
310#define OPpOFFBYONE 128 /* Treat caller(1) as caller(2) */
311
e664e0a4 312/* Private for OP_COREARGS */
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FC
313/* These must not conflict with OPpDONT_INIT_GV or OPpALLOW_FAKE.
314 See pp.c:S_rv2gv. */
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315#define OPpCOREARGS_DEREF1 1 /* Arg 1 is a handle constructor */
316#define OPpCOREARGS_DEREF2 2 /* Arg 2 is a handle constructor */
cb85b2db 317#define OPpCOREARGS_SCALARMOD 64 /* \$ rather than \[$@%*] */
0b19d81a 318#define OPpCOREARGS_PUSHMARK 128 /* Call pp_pushmark */
e664e0a4 319
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320struct op {
321 BASEOP
322};
323
324struct unop {
325 BASEOP
326 OP * op_first;
327};
328
329struct binop {
330 BASEOP
331 OP * op_first;
332 OP * op_last;
333};
334
335struct logop {
336 BASEOP
337 OP * op_first;
338 OP * op_other;
339};
340
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341struct listop {
342 BASEOP
343 OP * op_first;
344 OP * op_last;
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345};
346
347struct pmop {
348 BASEOP
349 OP * op_first;
350 OP * op_last;
1fcf4c12 351#ifdef USE_ITHREADS
fd1bc7eb 352 IV op_pmoffset;
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AB
353#else
354 REGEXP * op_pmregexp; /* compiled expression */
355#endif
69bdead3 356 U32 op_pmflags;
29f2e912 357 union {
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NC
358 OP * op_pmreplroot; /* For OP_SUBST */
359#ifdef USE_ITHREADS
360 PADOFFSET op_pmtargetoff; /* For OP_PUSHRE */
361#else
362 GV * op_pmtargetgv;
363#endif
364 } op_pmreplrootu;
365 union {
29f2e912 366 OP * op_pmreplstart; /* Only used in OP_SUBST */
cb55de95 367#ifdef USE_ITHREADS
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BF
368 struct {
369 char * op_pmstashpv; /* Only used in OP_MATCH, with PMf_ONCE set */
370 U32 op_pmstashflags; /* currently only SVf_UTF8 or 0 */
371 } op_pmstashthr;
cb55de95 372#else
29f2e912 373 HV * op_pmstash;
cb55de95 374#endif
29f2e912 375 } op_pmstashstartu;
79072805 376};
a0d0e21e 377
1fcf4c12 378#ifdef USE_ITHREADS
14a49a24
NC
379#define PM_GETRE(o) (SvTYPE(PL_regex_pad[(o)->op_pmoffset]) == SVt_REGEXP \
380 ? (REGEXP*)(PL_regex_pad[(o)->op_pmoffset]) : NULL)
ede1273d
NC
381/* The assignment is just to enforce type safety (or at least get a warning).
382 */
14a49a24
NC
383/* With first class regexps not via a reference one needs to assign
384 &PL_sv_undef under ithreads. (This would probably work unthreaded, but NULL
385 is cheaper. I guess we could allow NULL, but the check above would get
386 more complex, and we'd have an AV with (SV*)NULL in it, which feels bad */
387/* BEWARE - something that calls this macro passes (r) which has a side
388 effect. */
ede1273d 389#define PM_SETRE(o,r) STMT_START { \
b1bc3f34 390 REGEXP *const _pm_setre = (r); \
7948fc08 391 assert(_pm_setre); \
b1bc3f34 392 PL_regex_pad[(o)->op_pmoffset] = MUTABLE_SV(_pm_setre); \
ede1273d 393 } STMT_END
1fcf4c12 394#else
b9ed2502
AB
395#define PM_GETRE(o) ((o)->op_pmregexp)
396#define PM_SETRE(o,r) ((o)->op_pmregexp = (r))
1fcf4c12 397#endif
4825b64b 398
beae72ee
KW
399/* Leave some space, so future bit allocations can go either in the shared or
400 * unshared area without affecting binary compatibility */
df7a8460 401#define PMf_BASE_SHIFT (_RXf_PMf_SHIFT_NEXT+6)
f4a4cecb 402
ef07e810 403/* 'use re "taint"' in scope: taint $1 etc. if target tainted */
1ad4ec54 404#define PMf_RETAINT (1<<(PMf_BASE_SHIFT+0))
c737faaf 405
c0f1c194
KW
406/* match successfully only once per reset, with related flag RXf_USED in
407 * re->extflags holding state. This is used only for ?? matches, and only on
408 * OP_MATCH and OP_QR */
1ad4ec54 409#define PMf_ONCE (1<<(PMf_BASE_SHIFT+1))
1850c8f9
KW
410
411/* replacement contains variables */
1ad4ec54 412#define PMf_MAYBE_CONST (1<<(PMf_BASE_SHIFT+2))
1850c8f9
KW
413
414/* PMf_ONCE has matched successfully. Not used under threading. */
1ad4ec54 415#define PMf_USED (1<<(PMf_BASE_SHIFT+3))
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KW
416
417/* subst replacement is constant */
1ad4ec54 418#define PMf_CONST (1<<(PMf_BASE_SHIFT+4))
c737faaf 419
1850c8f9 420/* keep 1st runtime pattern forever */
1ad4ec54 421#define PMf_KEEP (1<<(PMf_BASE_SHIFT+5))
4da3eb8b 422
1ad4ec54 423#define PMf_GLOBAL (1<<(PMf_BASE_SHIFT+6)) /* pattern had a g modifier */
c737faaf 424
1850c8f9 425/* don't reset pos() if //g fails */
1ad4ec54 426#define PMf_CONTINUE (1<<(PMf_BASE_SHIFT+7))
1850c8f9
KW
427
428/* evaluating replacement as expr */
1ad4ec54 429#define PMf_EVAL (1<<(PMf_BASE_SHIFT+8))
c0f1c194
KW
430
431/* Return substituted string instead of modifying it. */
1ad4ec54 432#define PMf_NONDESTRUCT (1<<(PMf_BASE_SHIFT+9))
e357fc67 433
1ad4ec54 434#if PMf_BASE_SHIFT+9 > 31
32cdcf9d 435# error Too many PMf_ bits used. See above and regnodes.h for any spare in middle
1850c8f9 436#endif
79072805 437
cb55de95 438#ifdef USE_ITHREADS
05ec9bb3 439
29f2e912 440# define PmopSTASHPV(o) \
0eaf81c5 441 (((o)->op_pmflags & PMf_ONCE) ? (o)->op_pmstashstartu.op_pmstashthr.op_pmstashpv : NULL)
29f2e912
NC
442# if defined (DEBUGGING) && defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN)
443# define PmopSTASHPV_set(o,pv) ({ \
444 assert((o)->op_pmflags & PMf_ONCE); \
0eaf81c5 445 ((o)->op_pmstashstartu.op_pmstashthr.op_pmstashpv = savesharedpv(pv)); \
29f2e912
NC
446 })
447# else
448# define PmopSTASHPV_set(o,pv) \
0eaf81c5 449 ((o)->op_pmstashstartu.op_pmstashthr.op_pmstashpv = savesharedpv(pv))
29f2e912 450# endif
0eaf81c5
BF
451# define PmopSTASH_flags(o) ((o)->op_pmstashstartu.op_pmstashthr.op_pmstashflags)
452# define PmopSTASH_flags_set(o,flags) ((o)->op_pmstashstartu.op_pmstashthr.op_pmstashflags = flags)
453# define PmopSTASH(o) (PmopSTASHPV(o) \
454 ? gv_stashpv((o)->op_pmstashstartu.op_pmstashthr.op_pmstashpv, \
455 GV_ADD | PmopSTASH_flags(o)) : NULL)
456# define PmopSTASH_set(o,hv) (PmopSTASHPV_set(o, (hv) ? HvNAME_get(hv) : NULL), \
457 PmopSTASH_flags_set(o, \
458 ((hv) && HvNAME_HEK(hv) && \
459 HvNAMEUTF8(hv)) \
460 ? SVf_UTF8 \
461 : 0))
05ec9bb3
NIS
462# define PmopSTASH_free(o) PerlMemShared_free(PmopSTASHPV(o))
463
cb55de95 464#else
29f2e912
NC
465# define PmopSTASH(o) \
466 (((o)->op_pmflags & PMf_ONCE) ? (o)->op_pmstashstartu.op_pmstash : NULL)
467# if defined (DEBUGGING) && defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN)
468# define PmopSTASH_set(o,hv) ({ \
469 assert((o)->op_pmflags & PMf_ONCE); \
470 ((o)->op_pmstashstartu.op_pmstash = (hv)); \
471 })
472# else
473# define PmopSTASH_set(o,hv) ((o)->op_pmstashstartu.op_pmstash = (hv))
474# endif
bd61b366 475# define PmopSTASHPV(o) (PmopSTASH(o) ? HvNAME_get(PmopSTASH(o)) : NULL)
29f2e912 476 /* op_pmstashstartu.op_pmstash is not refcounted */
cb55de95 477# define PmopSTASHPV_set(o,pv) PmopSTASH_set((o), gv_stashpv(pv,GV_ADD))
c4bd3ae5
NC
478/* Note that if this becomes non-empty, then S_forget_pmop in op.c will need
479 changing */
05ec9bb3 480# define PmopSTASH_free(o)
cb55de95
JH
481#endif
482
79072805
LW
483struct svop {
484 BASEOP
485 SV * op_sv;
486};
487
7934575e 488struct padop {
79072805 489 BASEOP
7934575e 490 PADOFFSET op_padix;
79072805
LW
491};
492
493struct pvop {
494 BASEOP
495 char * op_pv;
496};
497
79072805
LW
498struct loop {
499 BASEOP
500 OP * op_first;
501 OP * op_last;
79072805
LW
502 OP * op_redoop;
503 OP * op_nextop;
504 OP * op_lastop;
505};
506
350de78d
GS
507#define cUNOPx(o) ((UNOP*)o)
508#define cBINOPx(o) ((BINOP*)o)
509#define cLISTOPx(o) ((LISTOP*)o)
510#define cLOGOPx(o) ((LOGOP*)o)
511#define cPMOPx(o) ((PMOP*)o)
512#define cSVOPx(o) ((SVOP*)o)
513#define cPADOPx(o) ((PADOP*)o)
514#define cPVOPx(o) ((PVOP*)o)
515#define cCOPx(o) ((COP*)o)
516#define cLOOPx(o) ((LOOP*)o)
517
518#define cUNOP cUNOPx(PL_op)
519#define cBINOP cBINOPx(PL_op)
520#define cLISTOP cLISTOPx(PL_op)
521#define cLOGOP cLOGOPx(PL_op)
522#define cPMOP cPMOPx(PL_op)
523#define cSVOP cSVOPx(PL_op)
524#define cPADOP cPADOPx(PL_op)
525#define cPVOP cPVOPx(PL_op)
526#define cCOP cCOPx(PL_op)
527#define cLOOP cLOOPx(PL_op)
528
529#define cUNOPo cUNOPx(o)
530#define cBINOPo cBINOPx(o)
531#define cLISTOPo cLISTOPx(o)
532#define cLOGOPo cLOGOPx(o)
533#define cPMOPo cPMOPx(o)
534#define cSVOPo cSVOPx(o)
535#define cPADOPo cPADOPx(o)
536#define cPVOPo cPVOPx(o)
537#define cCOPo cCOPx(o)
538#define cLOOPo cLOOPx(o)
539
540#define kUNOP cUNOPx(kid)
541#define kBINOP cBINOPx(kid)
542#define kLISTOP cLISTOPx(kid)
543#define kLOGOP cLOGOPx(kid)
544#define kPMOP cPMOPx(kid)
545#define kSVOP cSVOPx(kid)
546#define kPADOP cPADOPx(kid)
547#define kPVOP cPVOPx(kid)
548#define kCOP cCOPx(kid)
549#define kLOOP cLOOPx(kid)
550
551
552#ifdef USE_ITHREADS
dd2155a4 553# define cGVOPx_gv(o) ((GV*)PAD_SVl(cPADOPx(o)->op_padix))
cecf5685
NC
554# define IS_PADGV(v) (v && SvTYPE(v) == SVt_PVGV && isGV_with_GP(v) \
555 && GvIN_PAD(v))
7766f137
GS
556# define IS_PADCONST(v) (v && SvREADONLY(v))
557# define cSVOPx_sv(v) (cSVOPx(v)->op_sv \
dd2155a4 558 ? cSVOPx(v)->op_sv : PAD_SVl((v)->op_targ))
638eceb6 559# define cSVOPx_svp(v) (cSVOPx(v)->op_sv \
dd2155a4 560 ? &cSVOPx(v)->op_sv : &PAD_SVl((v)->op_targ))
350de78d 561#else
638eceb6 562# define cGVOPx_gv(o) ((GV*)cSVOPx(o)->op_sv)
743e66e6 563# define IS_PADGV(v) FALSE
7766f137
GS
564# define IS_PADCONST(v) FALSE
565# define cSVOPx_sv(v) (cSVOPx(v)->op_sv)
638eceb6 566# define cSVOPx_svp(v) (&cSVOPx(v)->op_sv)
350de78d 567#endif
79072805 568
638eceb6
GS
569#define cGVOP_gv cGVOPx_gv(PL_op)
570#define cGVOPo_gv cGVOPx_gv(o)
571#define kGVOP_gv cGVOPx_gv(kid)
572#define cSVOP_sv cSVOPx_sv(PL_op)
573#define cSVOPo_sv cSVOPx_sv(o)
574#define kSVOP_sv cSVOPx_sv(kid)
7766f137 575
bcabcc50
NC
576#ifndef PERL_CORE
577# define Nullop ((OP*)NULL)
578#endif
79072805 579
cee4176c 580/* Lowest byte of PL_opargs */
a0d0e21e
LW
581#define OA_MARK 1
582#define OA_FOLDCONST 2
583#define OA_RETSCALAR 4
584#define OA_TARGET 8
903fd87c 585#define OA_TARGLEX 16
a0d0e21e
LW
586#define OA_OTHERINT 32
587#define OA_DANGEROUS 64
588#define OA_DEFGV 128
589
db173bac 590/* The next 4 bits encode op class information */
903fd87c 591#define OCSHIFT 8
b162f9ea
IZ
592
593#define OA_CLASS_MASK (15 << OCSHIFT)
594
595#define OA_BASEOP (0 << OCSHIFT)
596#define OA_UNOP (1 << OCSHIFT)
597#define OA_BINOP (2 << OCSHIFT)
598#define OA_LOGOP (3 << OCSHIFT)
1a67a97c
SM
599#define OA_LISTOP (4 << OCSHIFT)
600#define OA_PMOP (5 << OCSHIFT)
601#define OA_SVOP (6 << OCSHIFT)
7934575e 602#define OA_PADOP (7 << OCSHIFT)
1a67a97c
SM
603#define OA_PVOP_OR_SVOP (8 << OCSHIFT)
604#define OA_LOOP (9 << OCSHIFT)
605#define OA_COP (10 << OCSHIFT)
606#define OA_BASEOP_OR_UNOP (11 << OCSHIFT)
607#define OA_FILESTATOP (12 << OCSHIFT)
608#define OA_LOOPEXOP (13 << OCSHIFT)
b162f9ea 609
903fd87c 610#define OASHIFT 12
a0d0e21e 611
4369b173 612/* Remaining nybbles of PL_opargs */
a0d0e21e
LW
613#define OA_SCALAR 1
614#define OA_LIST 2
615#define OA_AVREF 3
616#define OA_HVREF 4
617#define OA_CVREF 5
618#define OA_FILEREF 6
619#define OA_SCALARREF 7
620#define OA_OPTIONAL 8
621
d3c72c2a
DM
622/* Op_REFCNT is a reference count at the head of each op tree: needed
623 * since the tree is shared between threads, and between cloned closure
624 * copies in the same thread. OP_REFCNT_LOCK/UNLOCK is used when modifying
625 * this count.
626 * The same mutex is used to protect the refcounts of the reg_trie_data
627 * and reg_ac_data structures, which are shared between duplicated
628 * regexes.
629 */
630
534825c4
GS
631#ifdef USE_ITHREADS
632# define OP_REFCNT_INIT MUTEX_INIT(&PL_op_mutex)
4026c95a
SH
633# ifdef PERL_CORE
634# define OP_REFCNT_LOCK MUTEX_LOCK(&PL_op_mutex)
635# define OP_REFCNT_UNLOCK MUTEX_UNLOCK(&PL_op_mutex)
636# else
637# define OP_REFCNT_LOCK op_refcnt_lock()
638# define OP_REFCNT_UNLOCK op_refcnt_unlock()
639# endif
534825c4 640# define OP_REFCNT_TERM MUTEX_DESTROY(&PL_op_mutex)
534825c4
GS
641#else
642# define OP_REFCNT_INIT NOOP
643# define OP_REFCNT_LOCK NOOP
644# define OP_REFCNT_UNLOCK NOOP
645# define OP_REFCNT_TERM NOOP
534825c4 646#endif
e4783991 647
282f25c9 648#define OpREFCNT_set(o,n) ((o)->op_targ = (n))
fc97af9c
NC
649#ifdef PERL_DEBUG_READONLY_OPS
650# define OpREFCNT_inc(o) Perl_op_refcnt_inc(aTHX_ o)
651# define OpREFCNT_dec(o) Perl_op_refcnt_dec(aTHX_ o)
652#else
653# define OpREFCNT_inc(o) ((o) ? (++(o)->op_targ, (o)) : NULL)
654# define OpREFCNT_dec(o) (--(o)->op_targ)
655#endif
282f25c9 656
e4783991 657/* flags used by Perl_load_module() */
ec6d81ab
RGS
658#define PERL_LOADMOD_DENY 0x1 /* no Module */
659#define PERL_LOADMOD_NOIMPORT 0x2 /* use Module () */
660#define PERL_LOADMOD_IMPORT_OPS 0x4 /* use Module (...) */
e5dd39fc 661
a0c21aa1 662#if defined(PERL_IN_PERLY_C) || defined(PERL_IN_OP_C)
e4c5ccf3 663#define ref(o, type) doref(o, type, TRUE)
a0c21aa1 664#endif
e4c5ccf3 665
5983a79d
BM
666/*
667=head1 Optree Manipulation Functions
668
669=for apidoc Am|OP*|LINKLIST|OP *o
670Given the root of an optree, link the tree in execution order using the
671C<op_next> pointers and return the first op executed. If this has
672already been done, it will not be redone, and C<< o->op_next >> will be
673returned. If C<< o->op_next >> is not already set, I<o> should be at
674least an C<UNOP>.
675
676=cut
677*/
678
679#define LINKLIST(o) ((o)->op_next ? (o)->op_next : op_linklist((OP*)o))
680
33f36c71
NC
681/* no longer used anywhere in core */
682#ifndef PERL_CORE
46471bde 683#define cv_ckproto(cv, gv, p) \
f717afa7 684 cv_ckproto_len_flags((cv), (gv), (p), (p) ? strlen(p) : 0, 0)
33f36c71
NC
685#endif
686
7d0905b9
NC
687#ifdef PERL_CORE
688# define my(o) my_attrs((o), NULL)
689#endif
690
e5dd39fc 691#ifdef USE_REENTRANT_API
10bc17b6 692#include "reentr.h"
e5dd39fc
AB
693#endif
694
c7e45529
AE
695#if defined(PL_OP_SLAB_ALLOC)
696#define NewOp(m,var,c,type) \
e91d68d5 697 (var = (type *) Perl_Slab_Alloc(aTHX_ c*sizeof(type)))
c7e45529 698#define NewOpSz(m,var,size) \
e91d68d5 699 (var = (OP *) Perl_Slab_Alloc(aTHX_ size))
c7e45529
AE
700#define FreeOp(p) Perl_Slab_Free(aTHX_ p)
701#else
04e62e51
NC
702#define NewOp(m, var, c, type) \
703 (var = (MEM_WRAP_CHECK_(c,type) \
704 (type*)PerlMemShared_calloc(c, sizeof(type))))
113b9ccf 705#define NewOpSz(m, var, size) \
04e62e51
NC
706 (var = (OP*)PerlMemShared_calloc(1, size))
707#define FreeOp(p) PerlMemShared_free(p)
c7e45529 708#endif
598921a7 709
1930840b 710struct block_hooks {
52db365a 711 U32 bhk_flags;
1930840b
BM
712 void (*bhk_start) (pTHX_ int full);
713 void (*bhk_pre_end) (pTHX_ OP **seq);
714 void (*bhk_post_end) (pTHX_ OP **seq);
52db365a 715 void (*bhk_eval) (pTHX_ OP *const saveop);
1930840b
BM
716};
717
fd85fad2
BM
718/*
719=head1 Compile-time scope hooks
720
3e4ddde5 721=for apidoc mx|U32|BhkFLAGS|BHK *hk
fd85fad2
BM
722Return the BHK's flags.
723
3e4ddde5 724=for apidoc mx|void *|BhkENTRY|BHK *hk|which
fd85fad2
BM
725Return an entry from the BHK structure. I<which> is a preprocessor token
726indicating which entry to return. If the appropriate flag is not set
727this will return NULL. The type of the return value depends on which
728entry you ask for.
729
3e4ddde5 730=for apidoc Amx|void|BhkENTRY_set|BHK *hk|which|void *ptr
fd85fad2
BM
731Set an entry in the BHK structure, and set the flags to indicate it is
732valid. I<which> is a preprocessing token indicating which entry to set.
733The type of I<ptr> depends on the entry.
734
3e4ddde5 735=for apidoc Amx|void|BhkDISABLE|BHK *hk|which
a3e07c87
BM
736Temporarily disable an entry in this BHK structure, by clearing the
737appropriate flag. I<which> is a preprocessor token indicating which
738entry to disable.
739
3e4ddde5 740=for apidoc Amx|void|BhkENABLE|BHK *hk|which
a3e07c87
BM
741Re-enable an entry in this BHK structure, by setting the appropriate
742flag. I<which> is a preprocessor token indicating which entry to enable.
743This will assert (under -DDEBUGGING) if the entry doesn't contain a valid
744pointer.
745
3e4ddde5 746=for apidoc mx|void|CALL_BLOCK_HOOKS|which|arg
fd85fad2
BM
747Call all the registered block hooks for type I<which>. I<which> is a
748preprocessing token; the type of I<arg> depends on I<which>.
749
750=cut
751*/
752
52db365a
BM
753#define BhkFLAGS(hk) ((hk)->bhk_flags)
754
a88d97bf
BM
755#define BHKf_bhk_start 0x01
756#define BHKf_bhk_pre_end 0x02
757#define BHKf_bhk_post_end 0x04
758#define BHKf_bhk_eval 0x08
52db365a
BM
759
760#define BhkENTRY(hk, which) \
a88d97bf 761 ((BhkFLAGS(hk) & BHKf_ ## which) ? ((hk)->which) : NULL)
52db365a 762
a3e07c87
BM
763#define BhkENABLE(hk, which) \
764 STMT_START { \
765 BhkFLAGS(hk) |= BHKf_ ## which; \
766 assert(BhkENTRY(hk, which)); \
767 } STMT_END
768
769#define BhkDISABLE(hk, which) \
770 STMT_START { \
771 BhkFLAGS(hk) &= ~(BHKf_ ## which); \
772 } STMT_END
773
52db365a
BM
774#define BhkENTRY_set(hk, which, ptr) \
775 STMT_START { \
a88d97bf 776 (hk)->which = ptr; \
a3e07c87 777 BhkENABLE(hk, which); \
52db365a
BM
778 } STMT_END
779
1930840b
BM
780#define CALL_BLOCK_HOOKS(which, arg) \
781 STMT_START { \
782 if (PL_blockhooks) { \
783 I32 i; \
784 for (i = av_len(PL_blockhooks); i >= 0; i--) { \
785 SV *sv = AvARRAY(PL_blockhooks)[i]; \
52db365a 786 BHK *hk; \
1930840b
BM
787 \
788 assert(SvIOK(sv)); \
789 if (SvUOK(sv)) \
52db365a 790 hk = INT2PTR(BHK *, SvUVX(sv)); \
1930840b 791 else \
52db365a 792 hk = INT2PTR(BHK *, SvIVX(sv)); \
1930840b 793 \
52db365a 794 if (BhkENTRY(hk, which)) \
16c91539 795 BhkENTRY(hk, which)(aTHX_ arg); \
1930840b
BM
796 } \
797 } \
798 } STMT_END
799
d9088386
Z
800/* flags for rv2cv_op_cv */
801
802#define RV2CVOPCV_MARK_EARLY 0x00000001
803#define RV2CVOPCV_RETURN_NAME_GV 0x00000002
804
d3d7d28f
FC
805#define op_lvalue(op,t) Perl_op_lvalue_flags(aTHX_ op,t,0)
806
f5d552b4
FC
807/* flags for op_lvalue_flags */
808
809#define OP_LVALUE_NO_CROAK 1
810
9733086d
BM
811/*
812=head1 Custom Operators
813
814=for apidoc Am|U32|XopFLAGS|XOP *xop
815Return the XOP's flags.
816
817=for apidoc Am||XopENTRY|XOP *xop|which
818Return a member of the XOP structure. I<which> is a cpp token indicating
819which entry to return. If the member is not set this will return a
820default value. The return type depends on I<which>.
821
822=for apidoc Am|void|XopENTRY_set|XOP *xop|which|value
823Set a member of the XOP structure. I<which> is a cpp token indicating
824which entry to set. See L<perlguts/"Custom Operators"> for details about
825the available members and how they are used.
826
827=for apidoc Am|void|XopDISABLE|XOP *xop|which
828Temporarily disable a member of the XOP, by clearing the appropriate flag.
829
830=for apidoc Am|void|XopENABLE|XOP *xop|which
831Reenable a member of the XOP which has been disabled.
832
833=cut
834*/
835
1830b3d9
BM
836struct custom_op {
837 U32 xop_flags;
838 const char *xop_name;
839 const char *xop_desc;
840 U32 xop_class;
841 void (*xop_peep)(pTHX_ OP *o, OP *oldop);
842};
843
844#define XopFLAGS(xop) ((xop)->xop_flags)
845
846#define XOPf_xop_name 0x01
847#define XOPf_xop_desc 0x02
848#define XOPf_xop_class 0x04
849#define XOPf_xop_peep 0x08
850
851#define XOPd_xop_name PL_op_name[OP_CUSTOM]
852#define XOPd_xop_desc PL_op_desc[OP_CUSTOM]
853#define XOPd_xop_class OA_BASEOP
854#define XOPd_xop_peep ((Perl_cpeep_t)0)
855
856#define XopENTRY_set(xop, which, to) \
857 STMT_START { \
858 (xop)->which = (to); \
859 (xop)->xop_flags |= XOPf_ ## which; \
860 } STMT_END
861
862#define XopENTRY(xop, which) \
863 ((XopFLAGS(xop) & XOPf_ ## which) ? (xop)->which : XOPd_ ## which)
864
865#define XopDISABLE(xop, which) ((xop)->xop_flags &= ~XOPf_ ## which)
866#define XopENABLE(xop, which) \
867 STMT_START { \
868 (xop)->xop_flags |= XOPf_ ## which; \
869 assert(XopENTRY(xop, which)); \
870 } STMT_END
871
9733086d
BM
872/*
873=head1 Optree Manipulation Functions
874
875=for apidoc Am|const char *|OP_NAME|OP *o
876Return the name of the provided OP. For core ops this looks up the name
877from the op_type; for custom ops from the op_ppaddr.
878
879=for apidoc Am|const char *|OP_DESC|OP *o
880Return a short description of the provided OP.
881
882=for apidoc Am|U32|OP_CLASS|OP *o
883Return the class of the provided OP: that is, which of the *OP
884structures it uses. For core ops this currently gets the information out
885of PL_opargs, which does not always accurately reflect the type used.
886For custom ops the type is returned from the registration, and it is up
887to the registree to ensure it is accurate. The value returned will be
888one of the OA_* constants from op.h.
889
890=cut
891*/
892
1830b3d9
BM
893#define OP_NAME(o) ((o)->op_type == OP_CUSTOM \
894 ? XopENTRY(Perl_custom_op_xop(aTHX_ o), xop_name) \
895 : PL_op_name[(o)->op_type])
896#define OP_DESC(o) ((o)->op_type == OP_CUSTOM \
897 ? XopENTRY(Perl_custom_op_xop(aTHX_ o), xop_desc) \
898 : PL_op_desc[(o)->op_type])
899#define OP_CLASS(o) ((o)->op_type == OP_CUSTOM \
900 ? XopENTRY(Perl_custom_op_xop(aTHX_ o), xop_class) \
901 : (PL_opargs[(o)->op_type] & OA_CLASS_MASK))
902
7bff8c33
NC
903#define newSUB(f, o, p, b) Perl_newATTRSUB(aTHX_ (f), (o), (p), NULL, (b))
904
598921a7
NC
905#ifdef PERL_MAD
906# define MAD_NULL 1
907# define MAD_PV 2
908# define MAD_OP 3
909# define MAD_SV 4
910
911struct madprop {
912 MADPROP* mad_next;
d503a9ba 913 void *mad_val;
598921a7
NC
914 U32 mad_vlen;
915/* short mad_count; */
916 char mad_key;
917 char mad_type;
918};
919
920struct token {
921 I32 tk_type;
922 YYSTYPE tk_lval;
923 MADPROP* tk_mad;
924};
925#endif
2d910ff8
RGS
926
927/*
2b3def87 928 * Values that can be held by mad_key :
2d910ff8
RGS
929 * ^ unfilled head spot
930 * , literal ,
931 * ; literal ; (blank if implicit ; at end of block)
932 * : literal : from ?: or attr list
933 * + unary +
934 * ? literal ? from ?:
935 * ( literal (
936 * ) literal )
937 * [ literal [
938 * ] literal ]
939 * { literal {
940 * } literal }
941 * @ literal @ sigil
942 * $ literal $ sigil
943 * * literal * sigil
944 * ! use is source filtered
945 * & & or sub
946 * # whitespace/comment following ; or }
947 * # $# sigil
948 * 1 1st ; from for(;;)
949 * 1 retired protasis
950 * 2 2nd ; from for(;;)
951 * 2 retired apodosis
952 * 3 C-style for list
953 * a sub or var attributes
954 * a non-method arrow operator
955 * A method arrow operator
956 * A use import args
957 * b format block
958 * B retired stub block
959 * C constant conditional op
960 * d declarator
961 * D do block
962 * e unreached "else" (see C)
963 * e expression producing E
964 * E tr/E/R/, /E/
965 * f folded constant op
966 * F peg op for format
63575281 967 * g op was forced to be a word
2d910ff8
RGS
968 * i if/unless modifier
969 * I if/elsif/unless statement
dde83331 970 * k local declarator
2d910ff8
RGS
971 * K retired kid op
972 * l last index of array ($#foo)
973 * L label
974 * m modifier on regex
2d910ff8
RGS
975 * n sub or format name
976 * o current operator/declarator name
977 * o else/continue
978 * O generic optimized op
979 * p peg to hold extra whitespace at statement level
980 * P peg op for package declaration
981 * q opening quote
982 * = quoted material
983 * Q closing quote
984 * Q optimized qw//
985 * r expression producing R
986 * R tr/E/R/ s/E/R/
2d910ff8
RGS
987 * s sub signature
988 * S use import stub (no import)
989 * S retired sort block
990 * t unreached "then" (see C)
991 * U use import op
992 * v private sv of for loop
993 * V use version
994 * w while/until modifier
995 * W while/for statement
996 * x optimized qw
997 * X random thing
998 * _ whitespace/comments preceding anything else
999 * ~ =~ operator
1000 */
3f2908ec
NC
1001
1002/*
1003 * Local variables:
1004 * c-indentation-style: bsd
1005 * c-basic-offset: 4
1006 * indent-tabs-mode: t
1007 * End:
1008 *
1009 * ex: set ts=8 sts=4 sw=4 noet:
1010 */