Commit | Line | Data |
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a0d0e21e | 1 | /* op.h |
79072805 | 2 | * |
1129b882 NC |
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 | |
79072805 LW |
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 | * | |
79072805 LW |
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. | |
8be227ab | 22 | * op_slabbed allocated via opslab |
90840c5d RU |
23 | * op_static tell op_free() to skip PerlMemShared_free(), when |
24 | * !op_slabbed. | |
bb38a9e0 | 25 | * op_savefree on savestack via SAVEFREEOP |
3513c740 | 26 | * op_folded Result/remainder of a constant fold operation. |
29e61fd9 DM |
27 | * op_lastsib this op is is the last sibling |
28 | * op_spare One spare bit | |
79072805 LW |
29 | * op_flags Flags common to all operations. See OPf_* below. |
30 | * op_private Flags peculiar to a particular operation (BUT, | |
31 | * by default, set to the number of children until | |
32 | * the operation is privatized by a check routine, | |
33 | * which may or may not check number of children). | |
34 | */ | |
1850c8f9 | 35 | #include "op_reg_common.h" |
79072805 | 36 | |
79072805 | 37 | #define OPCODE U16 |
79072805 | 38 | |
61a59f30 | 39 | typedef PERL_BITFIELD16 Optype; |
0053d415 | 40 | |
0f4eea8f DL |
41 | #ifdef BASEOP_DEFINITION |
42 | #define BASEOP BASEOP_DEFINITION | |
43 | #else | |
79072805 LW |
44 | #define BASEOP \ |
45 | OP* op_next; \ | |
46 | OP* op_sibling; \ | |
16c91539 | 47 | OP* (*op_ppaddr)(pTHX); \ |
79072805 | 48 | PADOFFSET op_targ; \ |
654eccd5 JD |
49 | PERL_BITFIELD16 op_type:9; \ |
50 | PERL_BITFIELD16 op_opt:1; \ | |
8be227ab | 51 | PERL_BITFIELD16 op_slabbed:1; \ |
bb38a9e0 | 52 | PERL_BITFIELD16 op_savefree:1; \ |
90840c5d | 53 | PERL_BITFIELD16 op_static:1; \ |
3513c740 | 54 | PERL_BITFIELD16 op_folded:1; \ |
ea726588 | 55 | PERL_BITFIELD16 op_lastsib:1; \ |
29e61fd9 | 56 | PERL_BITFIELD16 op_spare:1; \ |
a0d0e21e LW |
57 | U8 op_flags; \ |
58 | U8 op_private; | |
0f4eea8f | 59 | #endif |
79072805 | 60 | |
0053d415 JD |
61 | /* If op_type:9 is changed to :10, also change PUSHEVAL in cop.h. |
62 | Also, if the type of op_type is ever changed (e.g. to PERL_BITFIELD32) | |
63 | then all the other bit-fields before/after it should change their | |
64 | types too to let VC pack them into the same 4 byte integer.*/ | |
17347a51 | 65 | |
fe615074 | 66 | /* for efficiency, requires OPf_WANT_VOID == G_VOID etc */ |
54310121 | 67 | #define OP_GIMME(op,dfl) \ |
fe615074 | 68 | (((op)->op_flags & OPf_WANT) ? ((op)->op_flags & OPf_WANT) : dfl) |
54310121 | 69 | |
2f8edad0 | 70 | #define OP_GIMME_REVERSE(flags) ((flags) & G_WANT) |
4f911530 | 71 | |
954c1994 | 72 | /* |
ccfc67b7 JH |
73 | =head1 "Gimme" Values |
74 | ||
954c1994 GS |
75 | =for apidoc Amn|U32|GIMME_V |
76 | The XSUB-writer's equivalent to Perl's C<wantarray>. Returns C<G_VOID>, | |
91e74348 | 77 | C<G_SCALAR> or C<G_ARRAY> for void, scalar or list context, |
72d33970 | 78 | respectively. See L<perlcall> for a usage example. |
954c1994 GS |
79 | |
80 | =for apidoc Amn|U32|GIMME | |
81 | A backward-compatible version of C<GIMME_V> which can only return | |
82 | C<G_SCALAR> or C<G_ARRAY>; in a void context, it returns C<G_SCALAR>. | |
83 | Deprecated. Use C<GIMME_V> instead. | |
84 | ||
85 | =cut | |
86 | */ | |
87 | ||
533c011a | 88 | #define GIMME_V OP_GIMME(PL_op, block_gimme()) |
79072805 LW |
89 | |
90 | /* Public flags */ | |
54310121 | 91 | |
92 | #define OPf_WANT 3 /* Mask for "want" bits: */ | |
93 | #define OPf_WANT_VOID 1 /* Want nothing */ | |
94 | #define OPf_WANT_SCALAR 2 /* Want single value */ | |
95 | #define OPf_WANT_LIST 3 /* Want list of any length */ | |
79072805 LW |
96 | #define OPf_KIDS 4 /* There is a firstborn child. */ |
97 | #define OPf_PARENS 8 /* This operator was parenthesized. */ | |
463ee0b2 | 98 | /* (Or block needs explicit scope entry.) */ |
a0d0e21e LW |
99 | #define OPf_REF 16 /* Certified reference. */ |
100 | /* (Return container, not containee). */ | |
101 | #define OPf_MOD 32 /* Will modify (lvalue). */ | |
102 | #define OPf_STACKED 64 /* Some arg is arriving on the stack. */ | |
79072805 LW |
103 | #define OPf_SPECIAL 128 /* Do something weird for this op: */ |
104 | /* On local LVAL, don't init local value. */ | |
105 | /* On OP_SORT, subroutine is inlined. */ | |
106 | /* On OP_NOT, inversion was implicit. */ | |
a0d0e21e | 107 | /* On OP_LEAVE, don't restore curpm. */ |
79072805 LW |
108 | /* On truncate, we truncate filehandle */ |
109 | /* On control verbs, we saw no label */ | |
110 | /* On flipflop, we saw ... instead of .. */ | |
111 | /* On UNOPs, saw bare parens, e.g. eof(). */ | |
deb92a6c | 112 | /* On OP_CHDIR, handle (or bare parens) */ |
a2167ea9 | 113 | /* On OP_NULL, saw a "do". */ |
afebc493 | 114 | /* On OP_EXISTS, treat av as av, not avhv. */ |
f2ec2afd | 115 | /* On OP_(ENTER|LEAVE)EVAL, don't clear $@ */ |
dbc200c5 | 116 | /* On pushre, rx is used as part of split, e.g. split " " */ |
497711e7 | 117 | /* On regcomp, "use re 'eval'" was in scope */ |
17fda545 NC |
118 | /* On RV2[ACGHS]V, don't create GV--in |
119 | defined()*/ | |
5df8de69 DM |
120 | /* On OP_DBSTATE, indicates breakpoint |
121 | * (runtime property) */ | |
6b514a0d | 122 | /* On OP_REQUIRE, was seen as CORE::require */ |
fc7debfb FC |
123 | /* On OP_(ENTER|LEAVE)WHEN, there's |
124 | no condition */ | |
0d863452 | 125 | /* On OP_SMARTMATCH, an implicit smartmatch */ |
78c72037 NC |
126 | /* On OP_ANONHASH and OP_ANONLIST, create a |
127 | reference to the new anon hash or array */ | |
fedf30e1 DM |
128 | /* On OP_HELEM, OP_MULTIDEREF and OP_HSLICE, |
129 | localization will be followed by assignment, | |
130 | so do not wipe the target if it is special | |
131 | (e.g. a glob or a magic SV) */ | |
2474a784 FC |
132 | /* On OP_MATCH, OP_SUBST & OP_TRANS, the |
133 | operand of a logical or conditional | |
134 | that was optimised away, so it should | |
135 | not be bound via =~ */ | |
6b7c6d95 | 136 | /* On OP_CONST, from a constant CV */ |
d67594ff FC |
137 | /* On OP_GLOB, two meanings: |
138 | - Before ck_glob, called as CORE::glob | |
139 | - After ck_glob, use Perl glob function | |
140 | */ | |
d5524600 | 141 | /* On OP_PADRANGE, push @_ */ |
7d1d69cb | 142 | /* On OP_DUMP, has no label */ |
205681b5 | 143 | /* On OP_UNSTACK, in a C-style for loop */ |
6d4eed21 FC |
144 | /* There is no room in op_flags for this one, so it has its own bit- |
145 | field member (op_folded) instead. The flag is only used to tell | |
146 | op_convert_list to set op_folded. */ | |
147 | #define OPf_FOLDED 1<<16 | |
79072805 | 148 | |
54310121 | 149 | /* old names; don't use in new code, but don't break them, either */ |
d91ab173 GS |
150 | #define OPf_LIST OPf_WANT_LIST |
151 | #define OPf_KNOW OPf_WANT | |
954c1994 | 152 | |
7143f21c | 153 | #if !defined(PERL_CORE) && !defined(PERL_EXT) |
82334630 | 154 | # define GIMME \ |
62a559b8 NIS |
155 | (PL_op->op_flags & OPf_WANT \ |
156 | ? ((PL_op->op_flags & OPf_WANT) == OPf_WANT_LIST \ | |
d91ab173 GS |
157 | ? G_ARRAY \ |
158 | : G_SCALAR) \ | |
159 | : dowantarray()) | |
82334630 | 160 | #endif |
54310121 | 161 | |
1dafeec8 | 162 | |
f3574cc6 DM |
163 | /* NOTE: OPp* flags are now auto-generated and defined in opcode.h, |
164 | * from data in regen/op_private */ | |
d41ff1b8 | 165 | |
a0d0e21e | 166 | |
59f00321 | 167 | #define OPpTRANS_ALL (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF|OPpTRANS_IDENTICAL|OPpTRANS_SQUASH|OPpTRANS_COMPLEMENT|OPpTRANS_GROWS|OPpTRANS_DELETE) |
79072805 | 168 | |
97e1065a | 169 | |
97e1065a | 170 | |
f3574cc6 DM |
171 | /* Mask for OP_ENTERSUB flags, the absence of which must be propagated |
172 | in dynamic context */ | |
777d9014 FC |
173 | #define OPpENTERSUB_LVAL_MASK (OPpLVAL_INTRO|OPpENTERSUB_INARGS) |
174 | ||
5db1eb8d | 175 | |
2f7c6295 DM |
176 | /* things that can be elements of op_aux */ |
177 | typedef union { | |
178 | PADOFFSET pad_offset; | |
179 | SV *sv; | |
180 | IV iv; | |
181 | UV uv; | |
182 | } UNOP_AUX_item; | |
183 | ||
fedf30e1 DM |
184 | #ifdef USE_ITHREADS |
185 | # define UNOP_AUX_item_sv(item) PAD_SVl((item)->pad_offset); | |
186 | #else | |
187 | # define UNOP_AUX_item_sv(item) ((item)->sv); | |
188 | #endif | |
189 | ||
190 | ||
191 | ||
60041a09 | 192 | |
79072805 LW |
193 | struct op { |
194 | BASEOP | |
195 | }; | |
196 | ||
197 | struct unop { | |
198 | BASEOP | |
199 | OP * op_first; | |
200 | }; | |
201 | ||
2f7c6295 DM |
202 | struct unop_aux { |
203 | BASEOP | |
204 | OP *op_first; | |
205 | UNOP_AUX_item *op_aux; | |
206 | }; | |
207 | ||
79072805 LW |
208 | struct binop { |
209 | BASEOP | |
210 | OP * op_first; | |
211 | OP * op_last; | |
212 | }; | |
213 | ||
214 | struct logop { | |
215 | BASEOP | |
216 | OP * op_first; | |
217 | OP * op_other; | |
218 | }; | |
219 | ||
79072805 LW |
220 | struct listop { |
221 | BASEOP | |
222 | OP * op_first; | |
223 | OP * op_last; | |
79072805 LW |
224 | }; |
225 | ||
b46e009d | 226 | struct methop { |
227 | BASEOP | |
228 | union { | |
229 | /* op_u.op_first *must* be aligned the same as the op_first | |
230 | * field of the other op types, and op_u.op_meth_sv *must* | |
231 | * be aligned with op_sv */ | |
232 | OP* op_first; /* optree for method name */ | |
233 | SV* op_meth_sv; /* static method name */ | |
234 | } op_u; | |
810bd8b7 | 235 | #ifdef USE_ITHREADS |
236 | PADOFFSET op_rclass_targ; /* pad index for redirect class */ | |
237 | #else | |
238 | SV* op_rclass_sv; /* static redirect class $o->A::meth() */ | |
239 | #endif | |
b46e009d | 240 | }; |
241 | ||
79072805 LW |
242 | struct pmop { |
243 | BASEOP | |
244 | OP * op_first; | |
245 | OP * op_last; | |
1fcf4c12 | 246 | #ifdef USE_ITHREADS |
784e50c8 | 247 | PADOFFSET op_pmoffset; |
1fcf4c12 AB |
248 | #else |
249 | REGEXP * op_pmregexp; /* compiled expression */ | |
250 | #endif | |
69bdead3 | 251 | U32 op_pmflags; |
29f2e912 | 252 | union { |
20e98b0f NC |
253 | OP * op_pmreplroot; /* For OP_SUBST */ |
254 | #ifdef USE_ITHREADS | |
255 | PADOFFSET op_pmtargetoff; /* For OP_PUSHRE */ | |
256 | #else | |
257 | GV * op_pmtargetgv; | |
258 | #endif | |
259 | } op_pmreplrootu; | |
260 | union { | |
29f2e912 | 261 | OP * op_pmreplstart; /* Only used in OP_SUBST */ |
cb55de95 | 262 | #ifdef USE_ITHREADS |
23083432 | 263 | PADOFFSET op_pmstashoff; /* Only used in OP_MATCH, with PMf_ONCE set */ |
cb55de95 | 264 | #else |
29f2e912 | 265 | HV * op_pmstash; |
cb55de95 | 266 | #endif |
29f2e912 | 267 | } op_pmstashstartu; |
68e2671b | 268 | OP * op_code_list; /* list of (?{}) code blocks */ |
79072805 | 269 | }; |
a0d0e21e | 270 | |
1fcf4c12 | 271 | #ifdef USE_ITHREADS |
14a49a24 NC |
272 | #define PM_GETRE(o) (SvTYPE(PL_regex_pad[(o)->op_pmoffset]) == SVt_REGEXP \ |
273 | ? (REGEXP*)(PL_regex_pad[(o)->op_pmoffset]) : NULL) | |
ede1273d NC |
274 | /* The assignment is just to enforce type safety (or at least get a warning). |
275 | */ | |
14a49a24 NC |
276 | /* With first class regexps not via a reference one needs to assign |
277 | &PL_sv_undef under ithreads. (This would probably work unthreaded, but NULL | |
278 | is cheaper. I guess we could allow NULL, but the check above would get | |
279 | more complex, and we'd have an AV with (SV*)NULL in it, which feels bad */ | |
280 | /* BEWARE - something that calls this macro passes (r) which has a side | |
281 | effect. */ | |
ede1273d | 282 | #define PM_SETRE(o,r) STMT_START { \ |
b1bc3f34 | 283 | REGEXP *const _pm_setre = (r); \ |
7948fc08 | 284 | assert(_pm_setre); \ |
b1bc3f34 | 285 | PL_regex_pad[(o)->op_pmoffset] = MUTABLE_SV(_pm_setre); \ |
ede1273d | 286 | } STMT_END |
1fcf4c12 | 287 | #else |
b9ed2502 AB |
288 | #define PM_GETRE(o) ((o)->op_pmregexp) |
289 | #define PM_SETRE(o,r) ((o)->op_pmregexp = (r)) | |
1fcf4c12 | 290 | #endif |
4825b64b | 291 | |
a6cd0fea KW |
292 | /* Currently these PMf flags occupy a single 32-bit word. Not all bits are |
293 | * currently used. The lower bits are shared with their corresponding RXf flag | |
294 | * bits, up to but not including _RXf_PMf_SHIFT_NEXT. The unused bits | |
295 | * immediately follow; finally the used Pmf-only (unshared) bits, so that the | |
296 | * highest bit in the word is used. This gathers all the unused bits as a pool | |
297 | * in the middle, like so: 11111111111111110000001111111111 | |
298 | * where the '1's represent used bits, and the '0's unused. This design allows | |
299 | * us to allocate off one end of the pool if we need to add a shared bit, and | |
300 | * off the other end if we need a non-shared bit, without disturbing the other | |
301 | * bits. This maximizes the likelihood of being able to change things without | |
302 | * breaking binary compatibility. | |
303 | * | |
304 | * To add shared bits, do so in op_reg_common.h. This should change | |
305 | * _RXf_PMf_SHIFT_NEXT so that things won't compile. Then come to regexp.h and | |
306 | * op.h and adjust the constant adders in the definitions of PMf_BASE_SHIFT and | |
307 | * Pmf_BASE_SHIFT down by the number of shared bits you added. That's it. | |
308 | * Things should be binary compatible. But if either of these gets to having | |
309 | * to subtract rather than add, leave at 0 and adjust all the entries below | |
310 | * that are in terms of this according. But if the first one of those is | |
311 | * already PMf_BASE_SHIFT+0, there are no bits left, and a redesign is in | |
312 | * order. | |
313 | * | |
314 | * To remove unshared bits, just delete its entry. If you're where breaking | |
315 | * binary compatibility is ok to do, you might want to adjust things to move | |
316 | * the newly opened space so that it gets absorbed into the common pool. | |
317 | * | |
318 | * To add unshared bits, first use up any gaps in the middle. Otherwise, | |
319 | * allocate off the low end until you get to PMf_BASE_SHIFT+0. If that isn't | |
320 | * enough, move PMf_BASE_SHIFT down (if possible) and add the new bit at the | |
321 | * other end instead; this preserves binary compatibility. */ | |
d262c0c7 | 322 | #define PMf_BASE_SHIFT (_RXf_PMf_SHIFT_NEXT+2) |
f4a4cecb | 323 | |
ef07e810 | 324 | /* 'use re "taint"' in scope: taint $1 etc. if target tainted */ |
9cba692b | 325 | #define PMf_RETAINT (1U<<(PMf_BASE_SHIFT+5)) |
c737faaf | 326 | |
c0f1c194 KW |
327 | /* match successfully only once per reset, with related flag RXf_USED in |
328 | * re->extflags holding state. This is used only for ?? matches, and only on | |
329 | * OP_MATCH and OP_QR */ | |
9cba692b | 330 | #define PMf_ONCE (1U<<(PMf_BASE_SHIFT+6)) |
1850c8f9 | 331 | |
d234778b | 332 | /* PMf_ONCE, i.e. ?pat?, has matched successfully. Not used under threading. */ |
9cba692b | 333 | #define PMf_USED (1U<<(PMf_BASE_SHIFT+7)) |
1850c8f9 KW |
334 | |
335 | /* subst replacement is constant */ | |
9cba692b | 336 | #define PMf_CONST (1U<<(PMf_BASE_SHIFT+8)) |
c737faaf | 337 | |
1850c8f9 | 338 | /* keep 1st runtime pattern forever */ |
9cba692b | 339 | #define PMf_KEEP (1U<<(PMf_BASE_SHIFT+9)) |
4da3eb8b | 340 | |
9cba692b | 341 | #define PMf_GLOBAL (1U<<(PMf_BASE_SHIFT+10)) /* pattern had a g modifier */ |
c737faaf | 342 | |
1850c8f9 | 343 | /* don't reset pos() if //g fails */ |
9cba692b | 344 | #define PMf_CONTINUE (1U<<(PMf_BASE_SHIFT+11)) |
1850c8f9 KW |
345 | |
346 | /* evaluating replacement as expr */ | |
9cba692b | 347 | #define PMf_EVAL (1U<<(PMf_BASE_SHIFT+12)) |
c0f1c194 KW |
348 | |
349 | /* Return substituted string instead of modifying it. */ | |
9cba692b | 350 | #define PMf_NONDESTRUCT (1U<<(PMf_BASE_SHIFT+13)) |
e357fc67 | 351 | |
d63c20f2 | 352 | /* the pattern has a CV attached (currently only under qr/...(?{}).../) */ |
9cba692b | 353 | #define PMf_HAS_CV (1U<<(PMf_BASE_SHIFT+14)) |
d63c20f2 | 354 | |
867940b8 DM |
355 | /* op_code_list is private; don't free it etc. It may well point to |
356 | * code within another sub, with different pad etc */ | |
9cba692b | 357 | #define PMf_CODELIST_PRIVATE (1U<<(PMf_BASE_SHIFT+15)) |
867940b8 | 358 | |
2a92a973 DM |
359 | /* the PMOP is a QR (we should be able to detect that from the op type, |
360 | * but the regex compilation API passes just the pm flags, not the op | |
361 | * itself */ | |
9cba692b KW |
362 | #define PMf_IS_QR (1U<<(PMf_BASE_SHIFT+16)) |
363 | #define PMf_USE_RE_EVAL (1U<<(PMf_BASE_SHIFT+17)) /* use re'eval' in scope */ | |
a6cd0fea KW |
364 | |
365 | /* See comments at the beginning of these defines about adding bits. The | |
366 | * highest bit position should be used, so that if PMf_BASE_SHIFT gets | |
367 | * increased, the #error below will be triggered so that you will be reminded | |
368 | * to adjust things at the other end to keep the bit positions unchanged */ | |
369 | #if PMf_BASE_SHIFT+17 > 31 | |
32cdcf9d | 370 | # error Too many PMf_ bits used. See above and regnodes.h for any spare in middle |
1850c8f9 | 371 | #endif |
79072805 | 372 | |
cb55de95 | 373 | #ifdef USE_ITHREADS |
05ec9bb3 | 374 | |
23083432 FC |
375 | # define PmopSTASH(o) ((o)->op_pmflags & PMf_ONCE \ |
376 | ? PL_stashpad[(o)->op_pmstashstartu.op_pmstashoff] \ | |
377 | : NULL) | |
378 | # define PmopSTASH_set(o,hv) \ | |
379 | (assert_((o)->op_pmflags & PMf_ONCE) \ | |
380 | (o)->op_pmstashstartu.op_pmstashoff = \ | |
01f44973 | 381 | (hv) ? alloccopstash(hv) : 0) |
cb55de95 | 382 | #else |
29f2e912 NC |
383 | # define PmopSTASH(o) \ |
384 | (((o)->op_pmflags & PMf_ONCE) ? (o)->op_pmstashstartu.op_pmstash : NULL) | |
385 | # if defined (DEBUGGING) && defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) | |
386 | # define PmopSTASH_set(o,hv) ({ \ | |
387 | assert((o)->op_pmflags & PMf_ONCE); \ | |
388 | ((o)->op_pmstashstartu.op_pmstash = (hv)); \ | |
389 | }) | |
390 | # else | |
391 | # define PmopSTASH_set(o,hv) ((o)->op_pmstashstartu.op_pmstash = (hv)) | |
392 | # endif | |
cb55de95 | 393 | #endif |
23083432 FC |
394 | #define PmopSTASHPV(o) (PmopSTASH(o) ? HvNAME_get(PmopSTASH(o)) : NULL) |
395 | /* op_pmstashstartu.op_pmstash is not refcounted */ | |
396 | #define PmopSTASHPV_set(o,pv) PmopSTASH_set((o), gv_stashpv(pv,GV_ADD)) | |
cb55de95 | 397 | |
79072805 LW |
398 | struct svop { |
399 | BASEOP | |
400 | SV * op_sv; | |
401 | }; | |
402 | ||
7934575e | 403 | struct padop { |
79072805 | 404 | BASEOP |
7934575e | 405 | PADOFFSET op_padix; |
79072805 LW |
406 | }; |
407 | ||
408 | struct pvop { | |
409 | BASEOP | |
410 | char * op_pv; | |
411 | }; | |
412 | ||
79072805 LW |
413 | struct loop { |
414 | BASEOP | |
415 | OP * op_first; | |
416 | OP * op_last; | |
79072805 LW |
417 | OP * op_redoop; |
418 | OP * op_nextop; | |
419 | OP * op_lastop; | |
420 | }; | |
421 | ||
9524b6e6 FC |
422 | #define cUNOPx(o) ((UNOP*)(o)) |
423 | #define cUNOP_AUXx(o) ((UNOP_AUX*)(o)) | |
424 | #define cBINOPx(o) ((BINOP*)(o)) | |
425 | #define cLISTOPx(o) ((LISTOP*)(o)) | |
426 | #define cLOGOPx(o) ((LOGOP*)(o)) | |
427 | #define cPMOPx(o) ((PMOP*)(o)) | |
428 | #define cSVOPx(o) ((SVOP*)(o)) | |
429 | #define cPADOPx(o) ((PADOP*)(o)) | |
430 | #define cPVOPx(o) ((PVOP*)(o)) | |
431 | #define cCOPx(o) ((COP*)(o)) | |
432 | #define cLOOPx(o) ((LOOP*)(o)) | |
433 | #define cMETHOPx(o) ((METHOP*)(o)) | |
350de78d GS |
434 | |
435 | #define cUNOP cUNOPx(PL_op) | |
2f7c6295 | 436 | #define cUNOP_AUX cUNOP_AUXx(PL_op) |
350de78d GS |
437 | #define cBINOP cBINOPx(PL_op) |
438 | #define cLISTOP cLISTOPx(PL_op) | |
439 | #define cLOGOP cLOGOPx(PL_op) | |
440 | #define cPMOP cPMOPx(PL_op) | |
441 | #define cSVOP cSVOPx(PL_op) | |
442 | #define cPADOP cPADOPx(PL_op) | |
443 | #define cPVOP cPVOPx(PL_op) | |
444 | #define cCOP cCOPx(PL_op) | |
445 | #define cLOOP cLOOPx(PL_op) | |
446 | ||
447 | #define cUNOPo cUNOPx(o) | |
2f7c6295 | 448 | #define cUNOP_AUXo cUNOP_AUXx(o) |
350de78d GS |
449 | #define cBINOPo cBINOPx(o) |
450 | #define cLISTOPo cLISTOPx(o) | |
451 | #define cLOGOPo cLOGOPx(o) | |
452 | #define cPMOPo cPMOPx(o) | |
453 | #define cSVOPo cSVOPx(o) | |
454 | #define cPADOPo cPADOPx(o) | |
455 | #define cPVOPo cPVOPx(o) | |
456 | #define cCOPo cCOPx(o) | |
457 | #define cLOOPo cLOOPx(o) | |
458 | ||
459 | #define kUNOP cUNOPx(kid) | |
2f7c6295 | 460 | #define kUNOP_AUX cUNOP_AUXx(kid) |
350de78d GS |
461 | #define kBINOP cBINOPx(kid) |
462 | #define kLISTOP cLISTOPx(kid) | |
463 | #define kLOGOP cLOGOPx(kid) | |
464 | #define kPMOP cPMOPx(kid) | |
465 | #define kSVOP cSVOPx(kid) | |
466 | #define kPADOP cPADOPx(kid) | |
467 | #define kPVOP cPVOPx(kid) | |
468 | #define kCOP cCOPx(kid) | |
469 | #define kLOOP cLOOPx(kid) | |
470 | ||
471 | ||
472 | #ifdef USE_ITHREADS | |
dd2155a4 | 473 | # define cGVOPx_gv(o) ((GV*)PAD_SVl(cPADOPx(o)->op_padix)) |
9429039d FC |
474 | # ifndef PERL_CORE |
475 | # define IS_PADGV(v) (v && isGV(v)) | |
476 | # define IS_PADCONST(v) \ | |
f5a0fd1e | 477 | (v && (SvREADONLY(v) || (SvIsCOW(v) && !SvLEN(v)))) |
9429039d | 478 | # endif |
7766f137 | 479 | # define cSVOPx_sv(v) (cSVOPx(v)->op_sv \ |
dd2155a4 | 480 | ? cSVOPx(v)->op_sv : PAD_SVl((v)->op_targ)) |
638eceb6 | 481 | # define cSVOPx_svp(v) (cSVOPx(v)->op_sv \ |
dd2155a4 | 482 | ? &cSVOPx(v)->op_sv : &PAD_SVl((v)->op_targ)) |
810bd8b7 | 483 | # define cMETHOPx_rclass(v) PAD_SVl(cMETHOPx(v)->op_rclass_targ) |
350de78d | 484 | #else |
638eceb6 | 485 | # define cGVOPx_gv(o) ((GV*)cSVOPx(o)->op_sv) |
9429039d FC |
486 | # ifndef PERL_CORE |
487 | # define IS_PADGV(v) FALSE | |
488 | # define IS_PADCONST(v) FALSE | |
489 | # endif | |
7766f137 | 490 | # define cSVOPx_sv(v) (cSVOPx(v)->op_sv) |
638eceb6 | 491 | # define cSVOPx_svp(v) (&cSVOPx(v)->op_sv) |
810bd8b7 | 492 | # define cMETHOPx_rclass(v) (cMETHOPx(v)->op_rclass_sv) |
350de78d | 493 | #endif |
79072805 | 494 | |
b46e009d | 495 | # define cMETHOPx_meth(v) cSVOPx_sv(v) |
496 | ||
638eceb6 GS |
497 | #define cGVOP_gv cGVOPx_gv(PL_op) |
498 | #define cGVOPo_gv cGVOPx_gv(o) | |
499 | #define kGVOP_gv cGVOPx_gv(kid) | |
500 | #define cSVOP_sv cSVOPx_sv(PL_op) | |
501 | #define cSVOPo_sv cSVOPx_sv(o) | |
502 | #define kSVOP_sv cSVOPx_sv(kid) | |
7766f137 | 503 | |
bcabcc50 NC |
504 | #ifndef PERL_CORE |
505 | # define Nullop ((OP*)NULL) | |
506 | #endif | |
79072805 | 507 | |
cee4176c | 508 | /* Lowest byte of PL_opargs */ |
a0d0e21e LW |
509 | #define OA_MARK 1 |
510 | #define OA_FOLDCONST 2 | |
511 | #define OA_RETSCALAR 4 | |
512 | #define OA_TARGET 8 | |
903fd87c | 513 | #define OA_TARGLEX 16 |
a0d0e21e LW |
514 | #define OA_OTHERINT 32 |
515 | #define OA_DANGEROUS 64 | |
516 | #define OA_DEFGV 128 | |
517 | ||
738ec380 | 518 | /* The next 4 bits (8..11) encode op class information */ |
903fd87c | 519 | #define OCSHIFT 8 |
b162f9ea IZ |
520 | |
521 | #define OA_CLASS_MASK (15 << OCSHIFT) | |
522 | ||
523 | #define OA_BASEOP (0 << OCSHIFT) | |
524 | #define OA_UNOP (1 << OCSHIFT) | |
525 | #define OA_BINOP (2 << OCSHIFT) | |
526 | #define OA_LOGOP (3 << OCSHIFT) | |
1a67a97c SM |
527 | #define OA_LISTOP (4 << OCSHIFT) |
528 | #define OA_PMOP (5 << OCSHIFT) | |
529 | #define OA_SVOP (6 << OCSHIFT) | |
7934575e | 530 | #define OA_PADOP (7 << OCSHIFT) |
1a67a97c SM |
531 | #define OA_PVOP_OR_SVOP (8 << OCSHIFT) |
532 | #define OA_LOOP (9 << OCSHIFT) | |
533 | #define OA_COP (10 << OCSHIFT) | |
534 | #define OA_BASEOP_OR_UNOP (11 << OCSHIFT) | |
535 | #define OA_FILESTATOP (12 << OCSHIFT) | |
536 | #define OA_LOOPEXOP (13 << OCSHIFT) | |
b46e009d | 537 | #define OA_METHOP (14 << OCSHIFT) |
2f7c6295 | 538 | #define OA_UNOP_AUX (15 << OCSHIFT) |
b162f9ea | 539 | |
738ec380 DM |
540 | /* Each remaining nybble of PL_opargs (i.e. bits 12..15, 16..19 etc) |
541 | * encode the type for each arg */ | |
903fd87c | 542 | #define OASHIFT 12 |
a0d0e21e | 543 | |
a0d0e21e LW |
544 | #define OA_SCALAR 1 |
545 | #define OA_LIST 2 | |
546 | #define OA_AVREF 3 | |
547 | #define OA_HVREF 4 | |
548 | #define OA_CVREF 5 | |
549 | #define OA_FILEREF 6 | |
550 | #define OA_SCALARREF 7 | |
551 | #define OA_OPTIONAL 8 | |
552 | ||
d3c72c2a DM |
553 | /* Op_REFCNT is a reference count at the head of each op tree: needed |
554 | * since the tree is shared between threads, and between cloned closure | |
555 | * copies in the same thread. OP_REFCNT_LOCK/UNLOCK is used when modifying | |
556 | * this count. | |
557 | * The same mutex is used to protect the refcounts of the reg_trie_data | |
558 | * and reg_ac_data structures, which are shared between duplicated | |
559 | * regexes. | |
560 | */ | |
561 | ||
534825c4 GS |
562 | #ifdef USE_ITHREADS |
563 | # define OP_REFCNT_INIT MUTEX_INIT(&PL_op_mutex) | |
4026c95a SH |
564 | # ifdef PERL_CORE |
565 | # define OP_REFCNT_LOCK MUTEX_LOCK(&PL_op_mutex) | |
566 | # define OP_REFCNT_UNLOCK MUTEX_UNLOCK(&PL_op_mutex) | |
567 | # else | |
568 | # define OP_REFCNT_LOCK op_refcnt_lock() | |
569 | # define OP_REFCNT_UNLOCK op_refcnt_unlock() | |
570 | # endif | |
534825c4 | 571 | # define OP_REFCNT_TERM MUTEX_DESTROY(&PL_op_mutex) |
534825c4 GS |
572 | #else |
573 | # define OP_REFCNT_INIT NOOP | |
574 | # define OP_REFCNT_LOCK NOOP | |
575 | # define OP_REFCNT_UNLOCK NOOP | |
576 | # define OP_REFCNT_TERM NOOP | |
534825c4 | 577 | #endif |
e4783991 | 578 | |
282f25c9 | 579 | #define OpREFCNT_set(o,n) ((o)->op_targ = (n)) |
fc97af9c NC |
580 | #ifdef PERL_DEBUG_READONLY_OPS |
581 | # define OpREFCNT_inc(o) Perl_op_refcnt_inc(aTHX_ o) | |
582 | # define OpREFCNT_dec(o) Perl_op_refcnt_dec(aTHX_ o) | |
583 | #else | |
584 | # define OpREFCNT_inc(o) ((o) ? (++(o)->op_targ, (o)) : NULL) | |
585 | # define OpREFCNT_dec(o) (--(o)->op_targ) | |
586 | #endif | |
282f25c9 | 587 | |
e4783991 | 588 | /* flags used by Perl_load_module() */ |
ec6d81ab RGS |
589 | #define PERL_LOADMOD_DENY 0x1 /* no Module */ |
590 | #define PERL_LOADMOD_NOIMPORT 0x2 /* use Module () */ | |
466f50cc FC |
591 | #define PERL_LOADMOD_IMPORT_OPS 0x4 /* import arguments |
592 | are passed as a sin- | |
593 | gle op tree, not a | |
594 | list of SVs */ | |
e5dd39fc | 595 | |
30d9c59b | 596 | #if defined(PERL_IN_PERLY_C) || defined(PERL_IN_OP_C) || defined(PERL_IN_TOKE_C) |
e4c5ccf3 | 597 | #define ref(o, type) doref(o, type, TRUE) |
a0c21aa1 | 598 | #endif |
e4c5ccf3 | 599 | |
5983a79d BM |
600 | /* |
601 | =head1 Optree Manipulation Functions | |
602 | ||
603 | =for apidoc Am|OP*|LINKLIST|OP *o | |
604 | Given the root of an optree, link the tree in execution order using the | |
72d33970 | 605 | C<op_next> pointers and return the first op executed. If this has |
5983a79d | 606 | already been done, it will not be redone, and C<< o->op_next >> will be |
72d33970 | 607 | returned. If C<< o->op_next >> is not already set, I<o> should be at |
5983a79d BM |
608 | least an C<UNOP>. |
609 | ||
610 | =cut | |
611 | */ | |
612 | ||
613 | #define LINKLIST(o) ((o)->op_next ? (o)->op_next : op_linklist((OP*)o)) | |
614 | ||
33f36c71 NC |
615 | /* no longer used anywhere in core */ |
616 | #ifndef PERL_CORE | |
46471bde | 617 | #define cv_ckproto(cv, gv, p) \ |
f717afa7 | 618 | cv_ckproto_len_flags((cv), (gv), (p), (p) ? strlen(p) : 0, 0) |
33f36c71 NC |
619 | #endif |
620 | ||
7d0905b9 NC |
621 | #ifdef PERL_CORE |
622 | # define my(o) my_attrs((o), NULL) | |
623 | #endif | |
624 | ||
e5dd39fc | 625 | #ifdef USE_REENTRANT_API |
10bc17b6 | 626 | #include "reentr.h" |
e5dd39fc AB |
627 | #endif |
628 | ||
c7e45529 | 629 | #define NewOp(m,var,c,type) \ |
e91d68d5 | 630 | (var = (type *) Perl_Slab_Alloc(aTHX_ c*sizeof(type))) |
c7e45529 | 631 | #define NewOpSz(m,var,size) \ |
e91d68d5 | 632 | (var = (OP *) Perl_Slab_Alloc(aTHX_ size)) |
c7e45529 | 633 | #define FreeOp(p) Perl_Slab_Free(aTHX_ p) |
8be227ab FC |
634 | |
635 | /* | |
636 | * The per-CV op slabs consist of a header (the opslab struct) and a bunch | |
637 | * of space for allocating op slots, each of which consists of two pointers | |
638 | * followed by an op. The first pointer points to the next op slot. The | |
639 | * second points to the slab. At the end of the slab is a null pointer, | |
640 | * so that slot->opslot_next - slot can be used to determine the size | |
641 | * of the op. | |
642 | * | |
643 | * Each CV can have multiple slabs; opslab_next points to the next slab, to | |
644 | * form a chain. All bookkeeping is done on the first slab, which is where | |
645 | * all the op slots point. | |
646 | * | |
647 | * Freed ops are marked as freed and attached to the freed chain | |
648 | * via op_next pointers. | |
649 | * | |
650 | * When there is more than one slab, the second slab in the slab chain is | |
651 | * assumed to be the one with free space available. It is used when allo- | |
652 | * cating an op if there are no freed ops available or big enough. | |
653 | */ | |
654 | ||
7aef8e5b | 655 | #ifdef PERL_CORE |
8be227ab FC |
656 | struct opslot { |
657 | /* keep opslot_next first */ | |
658 | OPSLOT * opslot_next; /* next slot */ | |
659 | OPSLAB * opslot_slab; /* owner */ | |
660 | OP opslot_op; /* the op itself */ | |
661 | }; | |
662 | ||
663 | struct opslab { | |
664 | OPSLOT * opslab_first; /* first op in this slab */ | |
665 | OPSLAB * opslab_next; /* next slab */ | |
666 | OP * opslab_freed; /* chain of freed ops */ | |
667 | size_t opslab_refcnt; /* number of ops */ | |
3107b51f FC |
668 | # ifdef PERL_DEBUG_READONLY_OPS |
669 | U16 opslab_size; /* size of slab in pointers */ | |
670 | bool opslab_readonly; | |
671 | # endif | |
8be227ab FC |
672 | OPSLOT opslab_slots; /* slots begin here */ |
673 | }; | |
674 | ||
675 | # define OPSLOT_HEADER STRUCT_OFFSET(OPSLOT, opslot_op) | |
676 | # define OPSLOT_HEADER_P (OPSLOT_HEADER/sizeof(I32 *)) | |
c7724415 | 677 | # define OpSLOT(o) (assert_(o->op_slabbed) \ |
8be227ab | 678 | (OPSLOT *)(((char *)o)-OPSLOT_HEADER)) |
8be227ab FC |
679 | # define OpSLAB(o) OpSLOT(o)->opslot_slab |
680 | # define OpslabREFCNT_dec(slab) \ | |
681 | (((slab)->opslab_refcnt == 1) \ | |
682 | ? opslab_free_nopad(slab) \ | |
683 | : (void)--(slab)->opslab_refcnt) | |
684 | /* Variant that does not null out the pads */ | |
685 | # define OpslabREFCNT_dec_padok(slab) \ | |
686 | (((slab)->opslab_refcnt == 1) \ | |
687 | ? opslab_free(slab) \ | |
688 | : (void)--(slab)->opslab_refcnt) | |
c7e45529 | 689 | #endif |
598921a7 | 690 | |
1930840b | 691 | struct block_hooks { |
52db365a | 692 | U32 bhk_flags; |
1930840b BM |
693 | void (*bhk_start) (pTHX_ int full); |
694 | void (*bhk_pre_end) (pTHX_ OP **seq); | |
695 | void (*bhk_post_end) (pTHX_ OP **seq); | |
52db365a | 696 | void (*bhk_eval) (pTHX_ OP *const saveop); |
1930840b BM |
697 | }; |
698 | ||
fd85fad2 BM |
699 | /* |
700 | =head1 Compile-time scope hooks | |
701 | ||
3e4ddde5 | 702 | =for apidoc mx|U32|BhkFLAGS|BHK *hk |
fd85fad2 BM |
703 | Return the BHK's flags. |
704 | ||
3e4ddde5 | 705 | =for apidoc mx|void *|BhkENTRY|BHK *hk|which |
72d33970 FC |
706 | Return an entry from the BHK structure. I<which> is a preprocessor token |
707 | indicating which entry to return. If the appropriate flag is not set | |
708 | this will return NULL. The type of the return value depends on which | |
fd85fad2 BM |
709 | entry you ask for. |
710 | ||
3e4ddde5 | 711 | =for apidoc Amx|void|BhkENTRY_set|BHK *hk|which|void *ptr |
fd85fad2 | 712 | Set an entry in the BHK structure, and set the flags to indicate it is |
72d33970 | 713 | valid. I<which> is a preprocessing token indicating which entry to set. |
fd85fad2 BM |
714 | The type of I<ptr> depends on the entry. |
715 | ||
3e4ddde5 | 716 | =for apidoc Amx|void|BhkDISABLE|BHK *hk|which |
a3e07c87 | 717 | Temporarily disable an entry in this BHK structure, by clearing the |
72d33970 | 718 | appropriate flag. I<which> is a preprocessor token indicating which |
a3e07c87 BM |
719 | entry to disable. |
720 | ||
3e4ddde5 | 721 | =for apidoc Amx|void|BhkENABLE|BHK *hk|which |
a3e07c87 | 722 | Re-enable an entry in this BHK structure, by setting the appropriate |
72d33970 | 723 | flag. I<which> is a preprocessor token indicating which entry to enable. |
a3e07c87 BM |
724 | This will assert (under -DDEBUGGING) if the entry doesn't contain a valid |
725 | pointer. | |
726 | ||
3e4ddde5 | 727 | =for apidoc mx|void|CALL_BLOCK_HOOKS|which|arg |
72d33970 | 728 | Call all the registered block hooks for type I<which>. I<which> is a |
fd85fad2 BM |
729 | preprocessing token; the type of I<arg> depends on I<which>. |
730 | ||
731 | =cut | |
732 | */ | |
733 | ||
52db365a BM |
734 | #define BhkFLAGS(hk) ((hk)->bhk_flags) |
735 | ||
a88d97bf BM |
736 | #define BHKf_bhk_start 0x01 |
737 | #define BHKf_bhk_pre_end 0x02 | |
738 | #define BHKf_bhk_post_end 0x04 | |
739 | #define BHKf_bhk_eval 0x08 | |
52db365a BM |
740 | |
741 | #define BhkENTRY(hk, which) \ | |
a88d97bf | 742 | ((BhkFLAGS(hk) & BHKf_ ## which) ? ((hk)->which) : NULL) |
52db365a | 743 | |
a3e07c87 BM |
744 | #define BhkENABLE(hk, which) \ |
745 | STMT_START { \ | |
746 | BhkFLAGS(hk) |= BHKf_ ## which; \ | |
747 | assert(BhkENTRY(hk, which)); \ | |
748 | } STMT_END | |
749 | ||
750 | #define BhkDISABLE(hk, which) \ | |
751 | STMT_START { \ | |
752 | BhkFLAGS(hk) &= ~(BHKf_ ## which); \ | |
753 | } STMT_END | |
754 | ||
52db365a BM |
755 | #define BhkENTRY_set(hk, which, ptr) \ |
756 | STMT_START { \ | |
a88d97bf | 757 | (hk)->which = ptr; \ |
a3e07c87 | 758 | BhkENABLE(hk, which); \ |
52db365a BM |
759 | } STMT_END |
760 | ||
1930840b BM |
761 | #define CALL_BLOCK_HOOKS(which, arg) \ |
762 | STMT_START { \ | |
763 | if (PL_blockhooks) { \ | |
c70927a6 | 764 | SSize_t i; \ |
b9f2b683 | 765 | for (i = av_tindex(PL_blockhooks); i >= 0; i--) { \ |
1930840b | 766 | SV *sv = AvARRAY(PL_blockhooks)[i]; \ |
52db365a | 767 | BHK *hk; \ |
1930840b BM |
768 | \ |
769 | assert(SvIOK(sv)); \ | |
770 | if (SvUOK(sv)) \ | |
52db365a | 771 | hk = INT2PTR(BHK *, SvUVX(sv)); \ |
1930840b | 772 | else \ |
52db365a | 773 | hk = INT2PTR(BHK *, SvIVX(sv)); \ |
1930840b | 774 | \ |
52db365a | 775 | if (BhkENTRY(hk, which)) \ |
16c91539 | 776 | BhkENTRY(hk, which)(aTHX_ arg); \ |
1930840b BM |
777 | } \ |
778 | } \ | |
779 | } STMT_END | |
780 | ||
d9088386 Z |
781 | /* flags for rv2cv_op_cv */ |
782 | ||
783 | #define RV2CVOPCV_MARK_EARLY 0x00000001 | |
784 | #define RV2CVOPCV_RETURN_NAME_GV 0x00000002 | |
211a4342 | 785 | #define RV2CVOPCV_RETURN_STUB 0x00000004 |
9c98a81f FC |
786 | #ifdef PERL_CORE /* behaviour of this flag is subject to change: */ |
787 | # define RV2CVOPCV_MAYBE_NAME_GV 0x00000008 | |
788 | #endif | |
789 | #define RV2CVOPCV_FLAG_MASK 0x0000000f /* all of the above */ | |
d9088386 | 790 | |
d3d7d28f FC |
791 | #define op_lvalue(op,t) Perl_op_lvalue_flags(aTHX_ op,t,0) |
792 | ||
f5d552b4 FC |
793 | /* flags for op_lvalue_flags */ |
794 | ||
795 | #define OP_LVALUE_NO_CROAK 1 | |
796 | ||
9733086d BM |
797 | /* |
798 | =head1 Custom Operators | |
799 | ||
800 | =for apidoc Am|U32|XopFLAGS|XOP *xop | |
801 | Return the XOP's flags. | |
802 | ||
803 | =for apidoc Am||XopENTRY|XOP *xop|which | |
72d33970 FC |
804 | Return a member of the XOP structure. I<which> is a cpp token |
805 | indicating which entry to return. If the member is not set | |
806 | this will return a default value. The return type depends | |
807 | on I<which>. This macro evaluates its arguments more than | |
808 | once. If you are using C<Perl_custom_op_xop> to retreive a | |
ae103e09 DD |
809 | C<XOP *> from a C<OP *>, use the more efficient L</XopENTRYCUSTOM> instead. |
810 | ||
811 | =for apidoc Am||XopENTRYCUSTOM|const OP *o|which | |
812 | Exactly like C<XopENTRY(XopENTRY(Perl_custom_op_xop(aTHX_ o), which)> but more | |
72d33970 | 813 | efficient. The I<which> parameter is identical to L</XopENTRY>. |
9733086d BM |
814 | |
815 | =for apidoc Am|void|XopENTRY_set|XOP *xop|which|value | |
72d33970 FC |
816 | Set a member of the XOP structure. I<which> is a cpp token |
817 | indicating which entry to set. See L<perlguts/"Custom Operators"> | |
818 | for details about the available members and how | |
819 | they are used. This macro evaluates its argument | |
ae103e09 | 820 | more than once. |
9733086d BM |
821 | |
822 | =for apidoc Am|void|XopDISABLE|XOP *xop|which | |
823 | Temporarily disable a member of the XOP, by clearing the appropriate flag. | |
824 | ||
825 | =for apidoc Am|void|XopENABLE|XOP *xop|which | |
826 | Reenable a member of the XOP which has been disabled. | |
827 | ||
828 | =cut | |
829 | */ | |
830 | ||
1830b3d9 BM |
831 | struct custom_op { |
832 | U32 xop_flags; | |
833 | const char *xop_name; | |
834 | const char *xop_desc; | |
835 | U32 xop_class; | |
836 | void (*xop_peep)(pTHX_ OP *o, OP *oldop); | |
837 | }; | |
838 | ||
ae103e09 DD |
839 | /* return value of Perl_custom_op_get_field, similar to void * then casting but |
840 | the U32 doesn't need truncation on 64 bit platforms in the caller, also | |
841 | for easier macro writing */ | |
842 | typedef union { | |
843 | const char *xop_name; | |
844 | const char *xop_desc; | |
845 | U32 xop_class; | |
846 | void (*xop_peep)(pTHX_ OP *o, OP *oldop); | |
847 | XOP *xop_ptr; | |
848 | } XOPRETANY; | |
849 | ||
1830b3d9 BM |
850 | #define XopFLAGS(xop) ((xop)->xop_flags) |
851 | ||
852 | #define XOPf_xop_name 0x01 | |
853 | #define XOPf_xop_desc 0x02 | |
854 | #define XOPf_xop_class 0x04 | |
855 | #define XOPf_xop_peep 0x08 | |
856 | ||
ae103e09 DD |
857 | /* used by Perl_custom_op_get_field for option checking */ |
858 | typedef enum { | |
859 | XOPe_xop_ptr = 0, /* just get the XOP *, don't look inside it */ | |
860 | XOPe_xop_name = XOPf_xop_name, | |
861 | XOPe_xop_desc = XOPf_xop_desc, | |
862 | XOPe_xop_class = XOPf_xop_class, | |
4a3798ca | 863 | XOPe_xop_peep = XOPf_xop_peep |
ae103e09 DD |
864 | } xop_flags_enum; |
865 | ||
1830b3d9 BM |
866 | #define XOPd_xop_name PL_op_name[OP_CUSTOM] |
867 | #define XOPd_xop_desc PL_op_desc[OP_CUSTOM] | |
868 | #define XOPd_xop_class OA_BASEOP | |
869 | #define XOPd_xop_peep ((Perl_cpeep_t)0) | |
870 | ||
871 | #define XopENTRY_set(xop, which, to) \ | |
872 | STMT_START { \ | |
873 | (xop)->which = (to); \ | |
874 | (xop)->xop_flags |= XOPf_ ## which; \ | |
875 | } STMT_END | |
876 | ||
877 | #define XopENTRY(xop, which) \ | |
878 | ((XopFLAGS(xop) & XOPf_ ## which) ? (xop)->which : XOPd_ ## which) | |
879 | ||
ae103e09 DD |
880 | #define XopENTRYCUSTOM(o, which) \ |
881 | (Perl_custom_op_get_field(aTHX_ o, XOPe_ ## which).which) | |
882 | ||
1830b3d9 BM |
883 | #define XopDISABLE(xop, which) ((xop)->xop_flags &= ~XOPf_ ## which) |
884 | #define XopENABLE(xop, which) \ | |
885 | STMT_START { \ | |
886 | (xop)->xop_flags |= XOPf_ ## which; \ | |
887 | assert(XopENTRY(xop, which)); \ | |
888 | } STMT_END | |
889 | ||
ae103e09 DD |
890 | #define Perl_custom_op_xop(x) \ |
891 | (Perl_custom_op_get_field(x, XOPe_xop_ptr).xop_ptr) | |
892 | ||
9733086d BM |
893 | /* |
894 | =head1 Optree Manipulation Functions | |
895 | ||
896 | =for apidoc Am|const char *|OP_NAME|OP *o | |
72d33970 | 897 | Return the name of the provided OP. For core ops this looks up the name |
9733086d BM |
898 | from the op_type; for custom ops from the op_ppaddr. |
899 | ||
900 | =for apidoc Am|const char *|OP_DESC|OP *o | |
901 | Return a short description of the provided OP. | |
902 | ||
903 | =for apidoc Am|U32|OP_CLASS|OP *o | |
904 | Return the class of the provided OP: that is, which of the *OP | |
72d33970 | 905 | structures it uses. For core ops this currently gets the information out |
9733086d BM |
906 | of PL_opargs, which does not always accurately reflect the type used. |
907 | For custom ops the type is returned from the registration, and it is up | |
72d33970 | 908 | to the registree to ensure it is accurate. The value returned will be |
9733086d BM |
909 | one of the OA_* constants from op.h. |
910 | ||
5bfb0af0 | 911 | =for apidoc Am|bool|OP_TYPE_IS|OP *o|Optype type |
11ee9dd6 S |
912 | Returns true if the given OP is not a NULL pointer |
913 | and if it is of the given type. | |
914 | ||
915 | The negation of this macro, C<OP_TYPE_ISNT> is also available | |
916 | as well as C<OP_TYPE_IS_NN> and C<OP_TYPE_ISNT_NN> which elide | |
917 | the NULL pointer check. | |
918 | ||
5bfb0af0 | 919 | =for apidoc Am|bool|OP_TYPE_IS_OR_WAS|OP *o|Optype type |
11ee9dd6 S |
920 | Returns true if the given OP is not a NULL pointer and |
921 | if it is of the given type or used to be before being | |
922 | replaced by an OP of type OP_NULL. | |
923 | ||
924 | The negation of this macro, C<OP_TYPE_ISNT_AND_WASNT> | |
925 | is also available as well as C<OP_TYPE_IS_OR_WAS_NN> | |
926 | and C<OP_TYPE_ISNT_AND_WASNT_NN> which elide | |
927 | the NULL pointer check. | |
928 | ||
e6dae479 | 929 | =for apidoc Am|bool|OpHAS_SIBLING|OP *o |
1ed44841 DM |
930 | Returns true if o has a sibling |
931 | ||
e6dae479 | 932 | =for apidoc Am|bool|OpSIBLING|OP *o |
1ed44841 DM |
933 | Returns the sibling of o, or NULL if there is no sibling |
934 | ||
e6dae479 | 935 | =for apidoc Am|bool|OpSIBLING_set|OP *o|OP *sib |
1ed44841 DM |
936 | Sets the sibling of o to sib |
937 | ||
9733086d BM |
938 | =cut |
939 | */ | |
940 | ||
1830b3d9 | 941 | #define OP_NAME(o) ((o)->op_type == OP_CUSTOM \ |
ae103e09 | 942 | ? XopENTRYCUSTOM(o, xop_name) \ |
1830b3d9 BM |
943 | : PL_op_name[(o)->op_type]) |
944 | #define OP_DESC(o) ((o)->op_type == OP_CUSTOM \ | |
ae103e09 | 945 | ? XopENTRYCUSTOM(o, xop_desc) \ |
1830b3d9 BM |
946 | : PL_op_desc[(o)->op_type]) |
947 | #define OP_CLASS(o) ((o)->op_type == OP_CUSTOM \ | |
ae103e09 | 948 | ? XopENTRYCUSTOM(o, xop_class) \ |
1830b3d9 BM |
949 | : (PL_opargs[(o)->op_type] & OA_CLASS_MASK)) |
950 | ||
437e3a7d | 951 | #define OP_TYPE_IS(o, type) ((o) && (o)->op_type == (type)) |
11ee9dd6 S |
952 | #define OP_TYPE_IS_NN(o, type) ((o)->op_type == (type)) |
953 | #define OP_TYPE_ISNT(o, type) ((o) && (o)->op_type != (type)) | |
954 | #define OP_TYPE_ISNT_NN(o, type) ((o)->op_type != (type)) | |
955 | ||
956 | #define OP_TYPE_IS_OR_WAS_NN(o, type) \ | |
957 | ( ((o)->op_type == OP_NULL \ | |
958 | ? (o)->op_targ \ | |
959 | : (o)->op_type) \ | |
960 | == (type) ) | |
961 | ||
962 | #define OP_TYPE_IS_OR_WAS(o, type) \ | |
963 | ( (o) && OP_TYPE_IS_OR_WAS_NN(o, type) ) | |
964 | ||
965 | #define OP_TYPE_ISNT_AND_WASNT_NN(o, type) \ | |
966 | ( ((o)->op_type == OP_NULL \ | |
967 | ? (o)->op_targ \ | |
968 | : (o)->op_type) \ | |
969 | != (type) ) | |
970 | ||
971 | #define OP_TYPE_ISNT_AND_WASNT(o, type) \ | |
972 | ( (o) && OP_TYPE_ISNT_AND_WASNT_NN(o, type) ) | |
437e3a7d | 973 | |
29e61fd9 | 974 | #ifdef PERL_OP_PARENT |
e6dae479 FC |
975 | # define OpHAS_SIBLING(o) (!cBOOL((o)->op_lastsib)) |
976 | # define OpSIBLING(o) (0 + (o)->op_lastsib ? NULL : (o)->op_sibling) | |
977 | # define OpSIBLING_set(o, sib) ((o)->op_sibling = (sib)) | |
29e61fd9 | 978 | #else |
e6dae479 FC |
979 | # define OpHAS_SIBLING(o) (cBOOL((o)->op_sibling)) |
980 | # define OpSIBLING(o) (0 + (o)->op_sibling) | |
981 | # define OpSIBLING_set(o, sib) ((o)->op_sibling = (sib)) | |
982 | #endif | |
983 | #if !defined(PERL_CORE) && !defined(PERL_EXT) | |
984 | # define OP_SIBLING(o) OpSIBLING(o) | |
29e61fd9 | 985 | #endif |
1ed44841 | 986 | |
e8f91c91 DD |
987 | #define newATTRSUB(f, o, p, a, b) Perl_newATTRSUB_x(aTHX_ f, o, p, a, b, FALSE) |
988 | #define newSUB(f, o, p, b) newATTRSUB((f), (o), (p), NULL, (b)) | |
7bff8c33 | 989 | |
3f2908ec | 990 | /* |
e8570548 Z |
991 | =head1 Hook manipulation |
992 | */ | |
993 | ||
994 | #ifdef USE_ITHREADS | |
995 | # define OP_CHECK_MUTEX_INIT MUTEX_INIT(&PL_check_mutex) | |
996 | # define OP_CHECK_MUTEX_LOCK MUTEX_LOCK(&PL_check_mutex) | |
997 | # define OP_CHECK_MUTEX_UNLOCK MUTEX_UNLOCK(&PL_check_mutex) | |
998 | # define OP_CHECK_MUTEX_TERM MUTEX_DESTROY(&PL_check_mutex) | |
999 | #else | |
1000 | # define OP_CHECK_MUTEX_INIT NOOP | |
1001 | # define OP_CHECK_MUTEX_LOCK NOOP | |
1002 | # define OP_CHECK_MUTEX_UNLOCK NOOP | |
1003 | # define OP_CHECK_MUTEX_TERM NOOP | |
1004 | #endif | |
1005 | ||
fedf30e1 DM |
1006 | |
1007 | /* Stuff for OP_MULTDEREF/pp_multideref. */ | |
1008 | ||
1009 | /* actions */ | |
1010 | ||
1011 | /* Load another word of actions/flag bits. Must be 0 */ | |
1012 | #define MDEREF_reload 0 | |
1013 | ||
1014 | #define MDEREF_AV_pop_rv2av_aelem 1 | |
1015 | #define MDEREF_AV_gvsv_vivify_rv2av_aelem 2 | |
1016 | #define MDEREF_AV_padsv_vivify_rv2av_aelem 3 | |
1017 | #define MDEREF_AV_vivify_rv2av_aelem 4 | |
1018 | #define MDEREF_AV_padav_aelem 5 | |
1019 | #define MDEREF_AV_gvav_aelem 6 | |
1020 | ||
1021 | #define MDEREF_HV_pop_rv2hv_helem 8 | |
1022 | #define MDEREF_HV_gvsv_vivify_rv2hv_helem 9 | |
1023 | #define MDEREF_HV_padsv_vivify_rv2hv_helem 10 | |
1024 | #define MDEREF_HV_vivify_rv2hv_helem 11 | |
1025 | #define MDEREF_HV_padhv_helem 12 | |
1026 | #define MDEREF_HV_gvhv_helem 13 | |
1027 | ||
1028 | #define MDEREF_ACTION_MASK 0xf | |
1029 | ||
1030 | /* key / index type */ | |
1031 | ||
1032 | #define MDEREF_INDEX_none 0x00 /* run external ops to generate index */ | |
1033 | #define MDEREF_INDEX_const 0x10 /* index is const PV/UV */ | |
1034 | #define MDEREF_INDEX_padsv 0x20 /* index is lexical var */ | |
1035 | #define MDEREF_INDEX_gvsv 0x30 /* index is GV */ | |
1036 | ||
1037 | #define MDEREF_INDEX_MASK 0x30 | |
1038 | ||
1039 | /* bit flags */ | |
1040 | ||
1041 | #define MDEREF_FLAG_last 0x40 /* the last [ah]elem; PL_op flags apply */ | |
1042 | ||
1043 | #define MDEREF_MASK 0x7F | |
1044 | #define MDEREF_SHIFT 7 | |
1045 | ||
1046 | ||
e8570548 | 1047 | /* |
3f2908ec NC |
1048 | * Local variables: |
1049 | * c-indentation-style: bsd | |
1050 | * c-basic-offset: 4 | |
14d04a33 | 1051 | * indent-tabs-mode: nil |
3f2908ec NC |
1052 | * End: |
1053 | * | |
14d04a33 | 1054 | * ex: set ts=8 sts=4 sw=4 et: |
3f2908ec | 1055 | */ |