Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* op.c |
79072805 | 2 | * |
4bb101f2 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
acde74e1 | 4 | * 2000, 2001, 2002, 2003, 2004, 2005, 2006, 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 | * | |
a0d0e21e LW |
9 | */ |
10 | ||
11 | /* | |
12 | * "You see: Mr. Drogo, he married poor Miss Primula Brandybuck. She was | |
13 | * our Mr. Bilbo's first cousin on the mother's side (her mother being the | |
14 | * youngest of the Old Took's daughters); and Mr. Drogo was his second | |
15 | * cousin. So Mr. Frodo is his first *and* second cousin, once removed | |
16 | * either way, as the saying is, if you follow me." --the Gaffer | |
79072805 LW |
17 | */ |
18 | ||
166f8a29 DM |
19 | /* This file contains the functions that create, manipulate and optimize |
20 | * the OP structures that hold a compiled perl program. | |
21 | * | |
22 | * A Perl program is compiled into a tree of OPs. Each op contains | |
23 | * structural pointers (eg to its siblings and the next op in the | |
24 | * execution sequence), a pointer to the function that would execute the | |
25 | * op, plus any data specific to that op. For example, an OP_CONST op | |
26 | * points to the pp_const() function and to an SV containing the constant | |
27 | * value. When pp_const() is executed, its job is to push that SV onto the | |
28 | * stack. | |
29 | * | |
30 | * OPs are mainly created by the newFOO() functions, which are mainly | |
31 | * called from the parser (in perly.y) as the code is parsed. For example | |
32 | * the Perl code $a + $b * $c would cause the equivalent of the following | |
33 | * to be called (oversimplifying a bit): | |
34 | * | |
35 | * newBINOP(OP_ADD, flags, | |
36 | * newSVREF($a), | |
37 | * newBINOP(OP_MULTIPLY, flags, newSVREF($b), newSVREF($c)) | |
38 | * ) | |
39 | * | |
40 | * Note that during the build of miniperl, a temporary copy of this file | |
41 | * is made, called opmini.c. | |
42 | */ | |
ccfc67b7 | 43 | |
61b743bb DM |
44 | /* |
45 | Perl's compiler is essentially a 3-pass compiler with interleaved phases: | |
46 | ||
47 | A bottom-up pass | |
48 | A top-down pass | |
49 | An execution-order pass | |
50 | ||
51 | The bottom-up pass is represented by all the "newOP" routines and | |
52 | the ck_ routines. The bottom-upness is actually driven by yacc. | |
53 | So at the point that a ck_ routine fires, we have no idea what the | |
54 | context is, either upward in the syntax tree, or either forward or | |
55 | backward in the execution order. (The bottom-up parser builds that | |
56 | part of the execution order it knows about, but if you follow the "next" | |
57 | links around, you'll find it's actually a closed loop through the | |
58 | top level node. | |
59 | ||
60 | Whenever the bottom-up parser gets to a node that supplies context to | |
61 | its components, it invokes that portion of the top-down pass that applies | |
62 | to that part of the subtree (and marks the top node as processed, so | |
63 | if a node further up supplies context, it doesn't have to take the | |
64 | plunge again). As a particular subcase of this, as the new node is | |
65 | built, it takes all the closed execution loops of its subcomponents | |
66 | and links them into a new closed loop for the higher level node. But | |
67 | it's still not the real execution order. | |
68 | ||
69 | The actual execution order is not known till we get a grammar reduction | |
70 | to a top-level unit like a subroutine or file that will be called by | |
71 | "name" rather than via a "next" pointer. At that point, we can call | |
72 | into peep() to do that code's portion of the 3rd pass. It has to be | |
73 | recursive, but it's recursive on basic blocks, not on tree nodes. | |
74 | */ | |
75 | ||
06e0342d | 76 | /* To implement user lexical pragmas, there needs to be a way at run time to |
b3ca2e83 NC |
77 | get the compile time state of %^H for that block. Storing %^H in every |
78 | block (or even COP) would be very expensive, so a different approach is | |
79 | taken. The (running) state of %^H is serialised into a tree of HE-like | |
80 | structs. Stores into %^H are chained onto the current leaf as a struct | |
81 | refcounted_he * with the key and the value. Deletes from %^H are saved | |
82 | with a value of PL_sv_placeholder. The state of %^H at any point can be | |
83 | turned back into a regular HV by walking back up the tree from that point's | |
06e0342d | 84 | leaf, ignoring any key you've already seen (placeholder or not), storing |
b3ca2e83 NC |
85 | the rest into the HV structure, then removing the placeholders. Hence |
86 | memory is only used to store the %^H deltas from the enclosing COP, rather | |
87 | than the entire %^H on each COP. | |
88 | ||
89 | To cause actions on %^H to write out the serialisation records, it has | |
90 | magic type 'H'. This magic (itself) does nothing, but its presence causes | |
91 | the values to gain magic type 'h', which has entries for set and clear. | |
c28fe1ec | 92 | C<Perl_magic_sethint> updates C<PL_compiling.cop_hints_hash> with a store |
b3ca2e83 | 93 | record, with deletes written by C<Perl_magic_clearhint>. C<SAVE_HINTS> |
c28fe1ec NC |
94 | saves the current C<PL_compiling.cop_hints_hash> on the save stack, so that |
95 | it will be correctly restored when any inner compiling scope is exited. | |
b3ca2e83 NC |
96 | */ |
97 | ||
79072805 | 98 | #include "EXTERN.h" |
864dbfa3 | 99 | #define PERL_IN_OP_C |
79072805 | 100 | #include "perl.h" |
77ca0c92 | 101 | #include "keywords.h" |
79072805 | 102 | |
a07e034d | 103 | #define CALL_PEEP(o) CALL_FPTR(PL_peepp)(aTHX_ o) |
a2efc822 | 104 | |
238a4c30 NIS |
105 | #if defined(PL_OP_SLAB_ALLOC) |
106 | ||
107 | #ifndef PERL_SLAB_SIZE | |
108 | #define PERL_SLAB_SIZE 2048 | |
109 | #endif | |
110 | ||
c7e45529 AE |
111 | void * |
112 | Perl_Slab_Alloc(pTHX_ int m, size_t sz) | |
1c846c1f | 113 | { |
5a8e194f NIS |
114 | /* |
115 | * To make incrementing use count easy PL_OpSlab is an I32 * | |
116 | * To make inserting the link to slab PL_OpPtr is I32 ** | |
117 | * So compute size in units of sizeof(I32 *) as that is how Pl_OpPtr increments | |
118 | * Add an overhead for pointer to slab and round up as a number of pointers | |
119 | */ | |
120 | sz = (sz + 2*sizeof(I32 *) -1)/sizeof(I32 *); | |
238a4c30 | 121 | if ((PL_OpSpace -= sz) < 0) { |
083fcd59 JH |
122 | PL_OpPtr = (I32 **) PerlMemShared_malloc(PERL_SLAB_SIZE*sizeof(I32*)); |
123 | if (!PL_OpPtr) { | |
238a4c30 NIS |
124 | return NULL; |
125 | } | |
5a8e194f NIS |
126 | Zero(PL_OpPtr,PERL_SLAB_SIZE,I32 **); |
127 | /* We reserve the 0'th I32 sized chunk as a use count */ | |
128 | PL_OpSlab = (I32 *) PL_OpPtr; | |
129 | /* Reduce size by the use count word, and by the size we need. | |
130 | * Latter is to mimic the '-=' in the if() above | |
131 | */ | |
132 | PL_OpSpace = PERL_SLAB_SIZE - (sizeof(I32)+sizeof(I32 **)-1)/sizeof(I32 **) - sz; | |
238a4c30 NIS |
133 | /* Allocation pointer starts at the top. |
134 | Theory: because we build leaves before trunk allocating at end | |
135 | means that at run time access is cache friendly upward | |
136 | */ | |
5a8e194f | 137 | PL_OpPtr += PERL_SLAB_SIZE; |
238a4c30 NIS |
138 | } |
139 | assert( PL_OpSpace >= 0 ); | |
140 | /* Move the allocation pointer down */ | |
141 | PL_OpPtr -= sz; | |
5a8e194f | 142 | assert( PL_OpPtr > (I32 **) PL_OpSlab ); |
238a4c30 NIS |
143 | *PL_OpPtr = PL_OpSlab; /* Note which slab it belongs to */ |
144 | (*PL_OpSlab)++; /* Increment use count of slab */ | |
5a8e194f | 145 | assert( PL_OpPtr+sz <= ((I32 **) PL_OpSlab + PERL_SLAB_SIZE) ); |
238a4c30 NIS |
146 | assert( *PL_OpSlab > 0 ); |
147 | return (void *)(PL_OpPtr + 1); | |
148 | } | |
149 | ||
c7e45529 AE |
150 | void |
151 | Perl_Slab_Free(pTHX_ void *op) | |
238a4c30 | 152 | { |
551405c4 | 153 | I32 * const * const ptr = (I32 **) op; |
aec46f14 | 154 | I32 * const slab = ptr[-1]; |
5a8e194f NIS |
155 | assert( ptr-1 > (I32 **) slab ); |
156 | assert( ptr < ( (I32 **) slab + PERL_SLAB_SIZE) ); | |
238a4c30 NIS |
157 | assert( *slab > 0 ); |
158 | if (--(*slab) == 0) { | |
7e4e8c89 NC |
159 | # ifdef NETWARE |
160 | # define PerlMemShared PerlMem | |
161 | # endif | |
083fcd59 JH |
162 | |
163 | PerlMemShared_free(slab); | |
238a4c30 NIS |
164 | if (slab == PL_OpSlab) { |
165 | PL_OpSpace = 0; | |
166 | } | |
167 | } | |
b7dc083c | 168 | } |
b7dc083c | 169 | #endif |
e50aee73 | 170 | /* |
ce6f1cbc | 171 | * In the following definition, the ", (OP*)0" is just to make the compiler |
a5f75d66 | 172 | * think the expression is of the right type: croak actually does a Siglongjmp. |
e50aee73 | 173 | */ |
11343788 | 174 | #define CHECKOP(type,o) \ |
ce6f1cbc | 175 | ((PL_op_mask && PL_op_mask[type]) \ |
5dc0d613 | 176 | ? ( op_free((OP*)o), \ |
cb77fdf0 | 177 | Perl_croak(aTHX_ "'%s' trapped by operation mask", PL_op_desc[type]), \ |
ce6f1cbc | 178 | (OP*)0 ) \ |
fc0dc3b3 | 179 | : CALL_FPTR(PL_check[type])(aTHX_ (OP*)o)) |
e50aee73 | 180 | |
e6438c1a | 181 | #define RETURN_UNLIMITED_NUMBER (PERL_INT_MAX / 2) |
c53d7c7d | 182 | |
8b6b16e7 | 183 | STATIC const char* |
cea2e8a9 | 184 | S_gv_ename(pTHX_ GV *gv) |
4633a7c4 | 185 | { |
46c461b5 | 186 | SV* const tmpsv = sv_newmortal(); |
bd61b366 | 187 | gv_efullname3(tmpsv, gv, NULL); |
8b6b16e7 | 188 | return SvPV_nolen_const(tmpsv); |
4633a7c4 LW |
189 | } |
190 | ||
76e3520e | 191 | STATIC OP * |
cea2e8a9 | 192 | S_no_fh_allowed(pTHX_ OP *o) |
79072805 | 193 | { |
cea2e8a9 | 194 | yyerror(Perl_form(aTHX_ "Missing comma after first argument to %s function", |
53e06cf0 | 195 | OP_DESC(o))); |
11343788 | 196 | return o; |
79072805 LW |
197 | } |
198 | ||
76e3520e | 199 | STATIC OP * |
bfed75c6 | 200 | S_too_few_arguments(pTHX_ OP *o, const char *name) |
79072805 | 201 | { |
cea2e8a9 | 202 | yyerror(Perl_form(aTHX_ "Not enough arguments for %s", name)); |
11343788 | 203 | return o; |
79072805 LW |
204 | } |
205 | ||
76e3520e | 206 | STATIC OP * |
bfed75c6 | 207 | S_too_many_arguments(pTHX_ OP *o, const char *name) |
79072805 | 208 | { |
cea2e8a9 | 209 | yyerror(Perl_form(aTHX_ "Too many arguments for %s", name)); |
11343788 | 210 | return o; |
79072805 LW |
211 | } |
212 | ||
76e3520e | 213 | STATIC void |
6867be6d | 214 | S_bad_type(pTHX_ I32 n, const char *t, const char *name, const OP *kid) |
8990e307 | 215 | { |
cea2e8a9 | 216 | yyerror(Perl_form(aTHX_ "Type of arg %d to %s must be %s (not %s)", |
53e06cf0 | 217 | (int)n, name, t, OP_DESC(kid))); |
8990e307 LW |
218 | } |
219 | ||
7a52d87a | 220 | STATIC void |
6867be6d | 221 | S_no_bareword_allowed(pTHX_ const OP *o) |
7a52d87a | 222 | { |
eb8433b7 NC |
223 | if (PL_madskills) |
224 | return; /* various ok barewords are hidden in extra OP_NULL */ | |
5a844595 | 225 | qerror(Perl_mess(aTHX_ |
35c1215d | 226 | "Bareword \"%"SVf"\" not allowed while \"strict subs\" in use", |
95b63a38 | 227 | (void*)cSVOPo_sv)); |
7a52d87a GS |
228 | } |
229 | ||
79072805 LW |
230 | /* "register" allocation */ |
231 | ||
232 | PADOFFSET | |
262cbcdb | 233 | Perl_allocmy(pTHX_ const char *const name) |
93a17b20 | 234 | { |
97aff369 | 235 | dVAR; |
a0d0e21e | 236 | PADOFFSET off; |
3edf23ff | 237 | const bool is_our = (PL_in_my == KEY_our); |
a0d0e21e | 238 | |
59f00321 | 239 | /* complain about "my $<special_var>" etc etc */ |
6b58708b | 240 | if (*name && |
3edf23ff | 241 | !(is_our || |
155aba94 | 242 | isALPHA(name[1]) || |
39e02b42 | 243 | (USE_UTF8_IN_NAMES && UTF8_IS_START(name[1])) || |
6b58708b | 244 | (name[1] == '_' && (*name == '$' || name[2])))) |
834a4ddd | 245 | { |
6b58708b | 246 | /* name[2] is true if strlen(name) > 2 */ |
c4d0567e | 247 | if (!isPRINT(name[1]) || strchr("\t\n\r\f", name[1])) { |
d1544d85 NC |
248 | yyerror(Perl_form(aTHX_ "Can't use global %c^%c%s in \"my\"", |
249 | name[0], toCTRL(name[1]), name + 2)); | |
250 | } else { | |
251 | yyerror(Perl_form(aTHX_ "Can't use global %s in \"my\"",name)); | |
46fc3d4c | 252 | } |
a0d0e21e | 253 | } |
748a9306 | 254 | |
dd2155a4 | 255 | /* check for duplicate declaration */ |
3edf23ff | 256 | pad_check_dup(name, is_our, (PL_curstash ? PL_curstash : PL_defstash)); |
33b8ce05 | 257 | |
dd2155a4 DM |
258 | if (PL_in_my_stash && *name != '$') { |
259 | yyerror(Perl_form(aTHX_ | |
260 | "Can't declare class for non-scalar %s in \"%s\"", | |
952306ac RGS |
261 | name, |
262 | is_our ? "our" : PL_in_my == KEY_state ? "state" : "my")); | |
6b35e009 GS |
263 | } |
264 | ||
dd2155a4 | 265 | /* allocate a spare slot and store the name in that slot */ |
93a17b20 | 266 | |
dd2155a4 DM |
267 | off = pad_add_name(name, |
268 | PL_in_my_stash, | |
3edf23ff | 269 | (is_our |
133706a6 RGS |
270 | /* $_ is always in main::, even with our */ |
271 | ? (PL_curstash && !strEQ(name,"$_") ? PL_curstash : PL_defstash) | |
5c284bb0 | 272 | : NULL |
dd2155a4 | 273 | ), |
952306ac RGS |
274 | 0, /* not fake */ |
275 | PL_in_my == KEY_state | |
dd2155a4 DM |
276 | ); |
277 | return off; | |
79072805 LW |
278 | } |
279 | ||
79072805 LW |
280 | /* Destructor */ |
281 | ||
282 | void | |
864dbfa3 | 283 | Perl_op_free(pTHX_ OP *o) |
79072805 | 284 | { |
27da23d5 | 285 | dVAR; |
acb36ea4 | 286 | OPCODE type; |
79072805 | 287 | |
2814eb74 | 288 | if (!o || o->op_static) |
79072805 LW |
289 | return; |
290 | ||
67566ccd | 291 | type = o->op_type; |
7934575e | 292 | if (o->op_private & OPpREFCOUNTED) { |
67566ccd | 293 | switch (type) { |
7934575e GS |
294 | case OP_LEAVESUB: |
295 | case OP_LEAVESUBLV: | |
296 | case OP_LEAVEEVAL: | |
297 | case OP_LEAVE: | |
298 | case OP_SCOPE: | |
299 | case OP_LEAVEWRITE: | |
67566ccd AL |
300 | { |
301 | PADOFFSET refcnt; | |
7934575e | 302 | OP_REFCNT_LOCK; |
4026c95a | 303 | refcnt = OpREFCNT_dec(o); |
7934575e | 304 | OP_REFCNT_UNLOCK; |
4026c95a SH |
305 | if (refcnt) |
306 | return; | |
67566ccd | 307 | } |
7934575e GS |
308 | break; |
309 | default: | |
310 | break; | |
311 | } | |
312 | } | |
313 | ||
11343788 | 314 | if (o->op_flags & OPf_KIDS) { |
6867be6d | 315 | register OP *kid, *nextkid; |
11343788 | 316 | for (kid = cUNOPo->op_first; kid; kid = nextkid) { |
85e6fe83 | 317 | nextkid = kid->op_sibling; /* Get before next freeing kid */ |
79072805 | 318 | op_free(kid); |
85e6fe83 | 319 | } |
79072805 | 320 | } |
acb36ea4 | 321 | if (type == OP_NULL) |
eb160463 | 322 | type = (OPCODE)o->op_targ; |
acb36ea4 GS |
323 | |
324 | /* COP* is not cleared by op_clear() so that we may track line | |
325 | * numbers etc even after null() */ | |
326 | if (type == OP_NEXTSTATE || type == OP_SETSTATE || type == OP_DBSTATE) | |
327 | cop_free((COP*)o); | |
328 | ||
329 | op_clear(o); | |
238a4c30 | 330 | FreeOp(o); |
4d494880 DM |
331 | #ifdef DEBUG_LEAKING_SCALARS |
332 | if (PL_op == o) | |
5f66b61c | 333 | PL_op = NULL; |
4d494880 | 334 | #endif |
acb36ea4 | 335 | } |
79072805 | 336 | |
93c66552 DM |
337 | void |
338 | Perl_op_clear(pTHX_ OP *o) | |
acb36ea4 | 339 | { |
13137afc | 340 | |
27da23d5 | 341 | dVAR; |
eb8433b7 NC |
342 | #ifdef PERL_MAD |
343 | /* if (o->op_madprop && o->op_madprop->mad_next) | |
344 | abort(); */ | |
3cc8d589 NC |
345 | /* FIXME for MAD - if I uncomment these two lines t/op/pack.t fails with |
346 | "modification of a read only value" for a reason I can't fathom why. | |
347 | It's the "" stringification of $_, where $_ was set to '' in a foreach | |
04a4d38e NC |
348 | loop, but it defies simplification into a small test case. |
349 | However, commenting them out has caused ext/List/Util/t/weak.t to fail | |
350 | the last test. */ | |
3cc8d589 NC |
351 | /* |
352 | mad_free(o->op_madprop); | |
353 | o->op_madprop = 0; | |
354 | */ | |
eb8433b7 NC |
355 | #endif |
356 | ||
357 | retry: | |
11343788 | 358 | switch (o->op_type) { |
acb36ea4 | 359 | case OP_NULL: /* Was holding old type, if any. */ |
eb8433b7 NC |
360 | if (PL_madskills && o->op_targ != OP_NULL) { |
361 | o->op_type = o->op_targ; | |
362 | o->op_targ = 0; | |
363 | goto retry; | |
364 | } | |
acb36ea4 | 365 | case OP_ENTEREVAL: /* Was holding hints. */ |
acb36ea4 | 366 | o->op_targ = 0; |
a0d0e21e | 367 | break; |
a6006777 | 368 | default: |
ac4c12e7 | 369 | if (!(o->op_flags & OPf_REF) |
0b94c7bb | 370 | || (PL_check[o->op_type] != MEMBER_TO_FPTR(Perl_ck_ftst))) |
a6006777 | 371 | break; |
372 | /* FALL THROUGH */ | |
463ee0b2 | 373 | case OP_GVSV: |
79072805 | 374 | case OP_GV: |
a6006777 | 375 | case OP_AELEMFAST: |
6a077020 DM |
376 | if (! (o->op_type == OP_AELEMFAST && o->op_flags & OPf_SPECIAL)) { |
377 | /* not an OP_PADAV replacement */ | |
350de78d | 378 | #ifdef USE_ITHREADS |
6a077020 DM |
379 | if (cPADOPo->op_padix > 0) { |
380 | /* No GvIN_PAD_off(cGVOPo_gv) here, because other references | |
381 | * may still exist on the pad */ | |
382 | pad_swipe(cPADOPo->op_padix, TRUE); | |
383 | cPADOPo->op_padix = 0; | |
384 | } | |
350de78d | 385 | #else |
6a077020 | 386 | SvREFCNT_dec(cSVOPo->op_sv); |
a0714e2c | 387 | cSVOPo->op_sv = NULL; |
350de78d | 388 | #endif |
6a077020 | 389 | } |
79072805 | 390 | break; |
a1ae71d2 | 391 | case OP_METHOD_NAMED: |
79072805 | 392 | case OP_CONST: |
11343788 | 393 | SvREFCNT_dec(cSVOPo->op_sv); |
a0714e2c | 394 | cSVOPo->op_sv = NULL; |
3b1c21fa AB |
395 | #ifdef USE_ITHREADS |
396 | /** Bug #15654 | |
397 | Even if op_clear does a pad_free for the target of the op, | |
6a077020 | 398 | pad_free doesn't actually remove the sv that exists in the pad; |
3b1c21fa AB |
399 | instead it lives on. This results in that it could be reused as |
400 | a target later on when the pad was reallocated. | |
401 | **/ | |
402 | if(o->op_targ) { | |
403 | pad_swipe(o->op_targ,1); | |
404 | o->op_targ = 0; | |
405 | } | |
406 | #endif | |
79072805 | 407 | break; |
748a9306 LW |
408 | case OP_GOTO: |
409 | case OP_NEXT: | |
410 | case OP_LAST: | |
411 | case OP_REDO: | |
11343788 | 412 | if (o->op_flags & (OPf_SPECIAL|OPf_STACKED|OPf_KIDS)) |
748a9306 LW |
413 | break; |
414 | /* FALL THROUGH */ | |
a0d0e21e | 415 | case OP_TRANS: |
acb36ea4 | 416 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { |
a0ed51b3 | 417 | SvREFCNT_dec(cSVOPo->op_sv); |
a0714e2c | 418 | cSVOPo->op_sv = NULL; |
acb36ea4 GS |
419 | } |
420 | else { | |
a0ed51b3 | 421 | Safefree(cPVOPo->op_pv); |
bd61b366 | 422 | cPVOPo->op_pv = NULL; |
acb36ea4 | 423 | } |
a0d0e21e LW |
424 | break; |
425 | case OP_SUBST: | |
11343788 | 426 | op_free(cPMOPo->op_pmreplroot); |
971a9dd3 | 427 | goto clear_pmop; |
748a9306 | 428 | case OP_PUSHRE: |
971a9dd3 | 429 | #ifdef USE_ITHREADS |
ba89bb6e | 430 | if (INT2PTR(PADOFFSET, cPMOPo->op_pmreplroot)) { |
dd2155a4 DM |
431 | /* No GvIN_PAD_off here, because other references may still |
432 | * exist on the pad */ | |
433 | pad_swipe(INT2PTR(PADOFFSET, cPMOPo->op_pmreplroot), TRUE); | |
971a9dd3 GS |
434 | } |
435 | #else | |
436 | SvREFCNT_dec((SV*)cPMOPo->op_pmreplroot); | |
437 | #endif | |
438 | /* FALL THROUGH */ | |
a0d0e21e | 439 | case OP_MATCH: |
8782bef2 | 440 | case OP_QR: |
971a9dd3 | 441 | clear_pmop: |
cb55de95 | 442 | { |
551405c4 | 443 | HV * const pmstash = PmopSTASH(cPMOPo); |
0565a181 | 444 | if (pmstash && !SvIS_FREED(pmstash)) { |
551405c4 | 445 | MAGIC * const mg = mg_find((SV*)pmstash, PERL_MAGIC_symtab); |
8d2f4536 NC |
446 | if (mg) { |
447 | PMOP *pmop = (PMOP*) mg->mg_obj; | |
448 | PMOP *lastpmop = NULL; | |
449 | while (pmop) { | |
450 | if (cPMOPo == pmop) { | |
451 | if (lastpmop) | |
452 | lastpmop->op_pmnext = pmop->op_pmnext; | |
453 | else | |
454 | mg->mg_obj = (SV*) pmop->op_pmnext; | |
455 | break; | |
456 | } | |
457 | lastpmop = pmop; | |
458 | pmop = pmop->op_pmnext; | |
cb55de95 | 459 | } |
cb55de95 | 460 | } |
83da49e6 | 461 | } |
05ec9bb3 | 462 | PmopSTASH_free(cPMOPo); |
cb55de95 | 463 | } |
5f66b61c | 464 | cPMOPo->op_pmreplroot = NULL; |
5f8cb046 DM |
465 | /* we use the "SAFE" version of the PM_ macros here |
466 | * since sv_clean_all might release some PMOPs | |
467 | * after PL_regex_padav has been cleared | |
468 | * and the clearing of PL_regex_padav needs to | |
469 | * happen before sv_clean_all | |
470 | */ | |
471 | ReREFCNT_dec(PM_GETRE_SAFE(cPMOPo)); | |
5f66b61c | 472 | PM_SETRE_SAFE(cPMOPo, NULL); |
13137afc AB |
473 | #ifdef USE_ITHREADS |
474 | if(PL_regex_pad) { /* We could be in destruction */ | |
475 | av_push((AV*) PL_regex_pad[0],(SV*) PL_regex_pad[(cPMOPo)->op_pmoffset]); | |
1cc8b4c5 | 476 | SvREPADTMP_on(PL_regex_pad[(cPMOPo)->op_pmoffset]); |
13137afc AB |
477 | PM_SETRE(cPMOPo, (cPMOPo)->op_pmoffset); |
478 | } | |
1eb1540c | 479 | #endif |
13137afc | 480 | |
a0d0e21e | 481 | break; |
79072805 LW |
482 | } |
483 | ||
743e66e6 | 484 | if (o->op_targ > 0) { |
11343788 | 485 | pad_free(o->op_targ); |
743e66e6 GS |
486 | o->op_targ = 0; |
487 | } | |
79072805 LW |
488 | } |
489 | ||
76e3520e | 490 | STATIC void |
3eb57f73 HS |
491 | S_cop_free(pTHX_ COP* cop) |
492 | { | |
05ec9bb3 NIS |
493 | Safefree(cop->cop_label); /* FIXME: treaddead ??? */ |
494 | CopFILE_free(cop); | |
495 | CopSTASH_free(cop); | |
0453d815 | 496 | if (! specialWARN(cop->cop_warnings)) |
72dc9ed5 | 497 | PerlMemShared_free(cop->cop_warnings); |
c28fe1ec | 498 | Perl_refcounted_he_free(aTHX_ cop->cop_hints_hash); |
3eb57f73 HS |
499 | } |
500 | ||
93c66552 DM |
501 | void |
502 | Perl_op_null(pTHX_ OP *o) | |
8990e307 | 503 | { |
27da23d5 | 504 | dVAR; |
acb36ea4 GS |
505 | if (o->op_type == OP_NULL) |
506 | return; | |
eb8433b7 NC |
507 | if (!PL_madskills) |
508 | op_clear(o); | |
11343788 MB |
509 | o->op_targ = o->op_type; |
510 | o->op_type = OP_NULL; | |
22c35a8c | 511 | o->op_ppaddr = PL_ppaddr[OP_NULL]; |
8990e307 LW |
512 | } |
513 | ||
4026c95a SH |
514 | void |
515 | Perl_op_refcnt_lock(pTHX) | |
516 | { | |
27da23d5 | 517 | dVAR; |
96a5add6 | 518 | PERL_UNUSED_CONTEXT; |
4026c95a SH |
519 | OP_REFCNT_LOCK; |
520 | } | |
521 | ||
522 | void | |
523 | Perl_op_refcnt_unlock(pTHX) | |
524 | { | |
27da23d5 | 525 | dVAR; |
96a5add6 | 526 | PERL_UNUSED_CONTEXT; |
4026c95a SH |
527 | OP_REFCNT_UNLOCK; |
528 | } | |
529 | ||
79072805 LW |
530 | /* Contextualizers */ |
531 | ||
463ee0b2 | 532 | #define LINKLIST(o) ((o)->op_next ? (o)->op_next : linklist((OP*)o)) |
79072805 LW |
533 | |
534 | OP * | |
864dbfa3 | 535 | Perl_linklist(pTHX_ OP *o) |
79072805 | 536 | { |
3edf23ff | 537 | OP *first; |
79072805 | 538 | |
11343788 MB |
539 | if (o->op_next) |
540 | return o->op_next; | |
79072805 LW |
541 | |
542 | /* establish postfix order */ | |
3edf23ff AL |
543 | first = cUNOPo->op_first; |
544 | if (first) { | |
6867be6d | 545 | register OP *kid; |
3edf23ff AL |
546 | o->op_next = LINKLIST(first); |
547 | kid = first; | |
548 | for (;;) { | |
549 | if (kid->op_sibling) { | |
79072805 | 550 | kid->op_next = LINKLIST(kid->op_sibling); |
3edf23ff AL |
551 | kid = kid->op_sibling; |
552 | } else { | |
11343788 | 553 | kid->op_next = o; |
3edf23ff AL |
554 | break; |
555 | } | |
79072805 LW |
556 | } |
557 | } | |
558 | else | |
11343788 | 559 | o->op_next = o; |
79072805 | 560 | |
11343788 | 561 | return o->op_next; |
79072805 LW |
562 | } |
563 | ||
564 | OP * | |
864dbfa3 | 565 | Perl_scalarkids(pTHX_ OP *o) |
79072805 | 566 | { |
11343788 | 567 | if (o && o->op_flags & OPf_KIDS) { |
bfed75c6 | 568 | OP *kid; |
11343788 | 569 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
570 | scalar(kid); |
571 | } | |
11343788 | 572 | return o; |
79072805 LW |
573 | } |
574 | ||
76e3520e | 575 | STATIC OP * |
cea2e8a9 | 576 | S_scalarboolean(pTHX_ OP *o) |
8990e307 | 577 | { |
97aff369 | 578 | dVAR; |
d008e5eb | 579 | if (o->op_type == OP_SASSIGN && cBINOPo->op_first->op_type == OP_CONST) { |
d008e5eb | 580 | if (ckWARN(WARN_SYNTAX)) { |
6867be6d | 581 | const line_t oldline = CopLINE(PL_curcop); |
a0d0e21e | 582 | |
d008e5eb | 583 | if (PL_copline != NOLINE) |
57843af0 | 584 | CopLINE_set(PL_curcop, PL_copline); |
9014280d | 585 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Found = in conditional, should be =="); |
57843af0 | 586 | CopLINE_set(PL_curcop, oldline); |
d008e5eb | 587 | } |
a0d0e21e | 588 | } |
11343788 | 589 | return scalar(o); |
8990e307 LW |
590 | } |
591 | ||
592 | OP * | |
864dbfa3 | 593 | Perl_scalar(pTHX_ OP *o) |
79072805 | 594 | { |
27da23d5 | 595 | dVAR; |
79072805 LW |
596 | OP *kid; |
597 | ||
a0d0e21e | 598 | /* assumes no premature commitment */ |
551405c4 | 599 | if (!o || PL_error_count || (o->op_flags & OPf_WANT) |
5dc0d613 | 600 | || o->op_type == OP_RETURN) |
7e363e51 | 601 | { |
11343788 | 602 | return o; |
7e363e51 | 603 | } |
79072805 | 604 | |
5dc0d613 | 605 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_SCALAR; |
79072805 | 606 | |
11343788 | 607 | switch (o->op_type) { |
79072805 | 608 | case OP_REPEAT: |
11343788 | 609 | scalar(cBINOPo->op_first); |
8990e307 | 610 | break; |
79072805 LW |
611 | case OP_OR: |
612 | case OP_AND: | |
613 | case OP_COND_EXPR: | |
11343788 | 614 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
8990e307 | 615 | scalar(kid); |
79072805 | 616 | break; |
a0d0e21e | 617 | case OP_SPLIT: |
11343788 | 618 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e | 619 | if (!kPMOP->op_pmreplroot) |
12bcd1a6 | 620 | deprecate_old("implicit split to @_"); |
a0d0e21e LW |
621 | } |
622 | /* FALL THROUGH */ | |
79072805 | 623 | case OP_MATCH: |
8782bef2 | 624 | case OP_QR: |
79072805 LW |
625 | case OP_SUBST: |
626 | case OP_NULL: | |
8990e307 | 627 | default: |
11343788 MB |
628 | if (o->op_flags & OPf_KIDS) { |
629 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) | |
8990e307 LW |
630 | scalar(kid); |
631 | } | |
79072805 LW |
632 | break; |
633 | case OP_LEAVE: | |
634 | case OP_LEAVETRY: | |
5dc0d613 | 635 | kid = cLISTOPo->op_first; |
54310121 | 636 | scalar(kid); |
155aba94 | 637 | while ((kid = kid->op_sibling)) { |
54310121 | 638 | if (kid->op_sibling) |
639 | scalarvoid(kid); | |
640 | else | |
641 | scalar(kid); | |
642 | } | |
11206fdd | 643 | PL_curcop = &PL_compiling; |
54310121 | 644 | break; |
748a9306 | 645 | case OP_SCOPE: |
79072805 | 646 | case OP_LINESEQ: |
8990e307 | 647 | case OP_LIST: |
11343788 | 648 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
649 | if (kid->op_sibling) |
650 | scalarvoid(kid); | |
651 | else | |
652 | scalar(kid); | |
653 | } | |
11206fdd | 654 | PL_curcop = &PL_compiling; |
79072805 | 655 | break; |
a801c63c RGS |
656 | case OP_SORT: |
657 | if (ckWARN(WARN_VOID)) | |
9014280d | 658 | Perl_warner(aTHX_ packWARN(WARN_VOID), "Useless use of sort in scalar context"); |
79072805 | 659 | } |
11343788 | 660 | return o; |
79072805 LW |
661 | } |
662 | ||
663 | OP * | |
864dbfa3 | 664 | Perl_scalarvoid(pTHX_ OP *o) |
79072805 | 665 | { |
27da23d5 | 666 | dVAR; |
79072805 | 667 | OP *kid; |
c445ea15 | 668 | const char* useless = NULL; |
8990e307 | 669 | SV* sv; |
2ebea0a1 GS |
670 | U8 want; |
671 | ||
eb8433b7 NC |
672 | /* trailing mad null ops don't count as "there" for void processing */ |
673 | if (PL_madskills && | |
674 | o->op_type != OP_NULL && | |
675 | o->op_sibling && | |
676 | o->op_sibling->op_type == OP_NULL) | |
677 | { | |
678 | OP *sib; | |
679 | for (sib = o->op_sibling; | |
680 | sib && sib->op_type == OP_NULL; | |
681 | sib = sib->op_sibling) ; | |
682 | ||
683 | if (!sib) | |
684 | return o; | |
685 | } | |
686 | ||
acb36ea4 GS |
687 | if (o->op_type == OP_NEXTSTATE |
688 | || o->op_type == OP_SETSTATE | |
689 | || o->op_type == OP_DBSTATE | |
690 | || (o->op_type == OP_NULL && (o->op_targ == OP_NEXTSTATE | |
691 | || o->op_targ == OP_SETSTATE | |
692 | || o->op_targ == OP_DBSTATE))) | |
2ebea0a1 | 693 | PL_curcop = (COP*)o; /* for warning below */ |
79072805 | 694 | |
54310121 | 695 | /* assumes no premature commitment */ |
2ebea0a1 GS |
696 | want = o->op_flags & OPf_WANT; |
697 | if ((want && want != OPf_WANT_SCALAR) || PL_error_count | |
5dc0d613 | 698 | || o->op_type == OP_RETURN) |
7e363e51 | 699 | { |
11343788 | 700 | return o; |
7e363e51 | 701 | } |
79072805 | 702 | |
b162f9ea | 703 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
704 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
705 | { | |
b162f9ea | 706 | return scalar(o); /* As if inside SASSIGN */ |
7e363e51 | 707 | } |
1c846c1f | 708 | |
5dc0d613 | 709 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_VOID; |
79072805 | 710 | |
11343788 | 711 | switch (o->op_type) { |
79072805 | 712 | default: |
22c35a8c | 713 | if (!(PL_opargs[o->op_type] & OA_FOLDCONST)) |
8990e307 | 714 | break; |
36477c24 | 715 | /* FALL THROUGH */ |
716 | case OP_REPEAT: | |
11343788 | 717 | if (o->op_flags & OPf_STACKED) |
8990e307 | 718 | break; |
5d82c453 GA |
719 | goto func_ops; |
720 | case OP_SUBSTR: | |
721 | if (o->op_private == 4) | |
722 | break; | |
8990e307 LW |
723 | /* FALL THROUGH */ |
724 | case OP_GVSV: | |
725 | case OP_WANTARRAY: | |
726 | case OP_GV: | |
727 | case OP_PADSV: | |
728 | case OP_PADAV: | |
729 | case OP_PADHV: | |
730 | case OP_PADANY: | |
731 | case OP_AV2ARYLEN: | |
8990e307 | 732 | case OP_REF: |
a0d0e21e LW |
733 | case OP_REFGEN: |
734 | case OP_SREFGEN: | |
8990e307 LW |
735 | case OP_DEFINED: |
736 | case OP_HEX: | |
737 | case OP_OCT: | |
738 | case OP_LENGTH: | |
8990e307 LW |
739 | case OP_VEC: |
740 | case OP_INDEX: | |
741 | case OP_RINDEX: | |
742 | case OP_SPRINTF: | |
743 | case OP_AELEM: | |
744 | case OP_AELEMFAST: | |
745 | case OP_ASLICE: | |
8990e307 LW |
746 | case OP_HELEM: |
747 | case OP_HSLICE: | |
748 | case OP_UNPACK: | |
749 | case OP_PACK: | |
8990e307 LW |
750 | case OP_JOIN: |
751 | case OP_LSLICE: | |
752 | case OP_ANONLIST: | |
753 | case OP_ANONHASH: | |
754 | case OP_SORT: | |
755 | case OP_REVERSE: | |
756 | case OP_RANGE: | |
757 | case OP_FLIP: | |
758 | case OP_FLOP: | |
759 | case OP_CALLER: | |
760 | case OP_FILENO: | |
761 | case OP_EOF: | |
762 | case OP_TELL: | |
763 | case OP_GETSOCKNAME: | |
764 | case OP_GETPEERNAME: | |
765 | case OP_READLINK: | |
766 | case OP_TELLDIR: | |
767 | case OP_GETPPID: | |
768 | case OP_GETPGRP: | |
769 | case OP_GETPRIORITY: | |
770 | case OP_TIME: | |
771 | case OP_TMS: | |
772 | case OP_LOCALTIME: | |
773 | case OP_GMTIME: | |
774 | case OP_GHBYNAME: | |
775 | case OP_GHBYADDR: | |
776 | case OP_GHOSTENT: | |
777 | case OP_GNBYNAME: | |
778 | case OP_GNBYADDR: | |
779 | case OP_GNETENT: | |
780 | case OP_GPBYNAME: | |
781 | case OP_GPBYNUMBER: | |
782 | case OP_GPROTOENT: | |
783 | case OP_GSBYNAME: | |
784 | case OP_GSBYPORT: | |
785 | case OP_GSERVENT: | |
786 | case OP_GPWNAM: | |
787 | case OP_GPWUID: | |
788 | case OP_GGRNAM: | |
789 | case OP_GGRGID: | |
790 | case OP_GETLOGIN: | |
78e1b766 | 791 | case OP_PROTOTYPE: |
5d82c453 | 792 | func_ops: |
64aac5a9 | 793 | if (!(o->op_private & (OPpLVAL_INTRO|OPpOUR_INTRO))) |
53e06cf0 | 794 | useless = OP_DESC(o); |
8990e307 LW |
795 | break; |
796 | ||
9f82cd5f YST |
797 | case OP_NOT: |
798 | kid = cUNOPo->op_first; | |
799 | if (kid->op_type != OP_MATCH && kid->op_type != OP_SUBST && | |
800 | kid->op_type != OP_TRANS) { | |
801 | goto func_ops; | |
802 | } | |
803 | useless = "negative pattern binding (!~)"; | |
804 | break; | |
805 | ||
8990e307 LW |
806 | case OP_RV2GV: |
807 | case OP_RV2SV: | |
808 | case OP_RV2AV: | |
809 | case OP_RV2HV: | |
192587c2 | 810 | if (!(o->op_private & (OPpLVAL_INTRO|OPpOUR_INTRO)) && |
11343788 | 811 | (!o->op_sibling || o->op_sibling->op_type != OP_READLINE)) |
8990e307 LW |
812 | useless = "a variable"; |
813 | break; | |
79072805 LW |
814 | |
815 | case OP_CONST: | |
7766f137 | 816 | sv = cSVOPo_sv; |
7a52d87a GS |
817 | if (cSVOPo->op_private & OPpCONST_STRICT) |
818 | no_bareword_allowed(o); | |
819 | else { | |
d008e5eb GS |
820 | if (ckWARN(WARN_VOID)) { |
821 | useless = "a constant"; | |
2e0ae2d3 | 822 | if (o->op_private & OPpCONST_ARYBASE) |
d4c19fe8 | 823 | useless = NULL; |
e7fec78e | 824 | /* don't warn on optimised away booleans, eg |
b5a930ec | 825 | * use constant Foo, 5; Foo || print; */ |
e7fec78e | 826 | if (cSVOPo->op_private & OPpCONST_SHORTCIRCUIT) |
d4c19fe8 | 827 | useless = NULL; |
960b4253 MG |
828 | /* the constants 0 and 1 are permitted as they are |
829 | conventionally used as dummies in constructs like | |
830 | 1 while some_condition_with_side_effects; */ | |
e7fec78e | 831 | else if (SvNIOK(sv) && (SvNV(sv) == 0.0 || SvNV(sv) == 1.0)) |
d4c19fe8 | 832 | useless = NULL; |
d008e5eb | 833 | else if (SvPOK(sv)) { |
a52fe3ac A |
834 | /* perl4's way of mixing documentation and code |
835 | (before the invention of POD) was based on a | |
836 | trick to mix nroff and perl code. The trick was | |
837 | built upon these three nroff macros being used in | |
838 | void context. The pink camel has the details in | |
839 | the script wrapman near page 319. */ | |
6136c704 AL |
840 | const char * const maybe_macro = SvPVX_const(sv); |
841 | if (strnEQ(maybe_macro, "di", 2) || | |
842 | strnEQ(maybe_macro, "ds", 2) || | |
843 | strnEQ(maybe_macro, "ig", 2)) | |
d4c19fe8 | 844 | useless = NULL; |
d008e5eb | 845 | } |
8990e307 LW |
846 | } |
847 | } | |
93c66552 | 848 | op_null(o); /* don't execute or even remember it */ |
79072805 LW |
849 | break; |
850 | ||
851 | case OP_POSTINC: | |
11343788 | 852 | o->op_type = OP_PREINC; /* pre-increment is faster */ |
22c35a8c | 853 | o->op_ppaddr = PL_ppaddr[OP_PREINC]; |
79072805 LW |
854 | break; |
855 | ||
856 | case OP_POSTDEC: | |
11343788 | 857 | o->op_type = OP_PREDEC; /* pre-decrement is faster */ |
22c35a8c | 858 | o->op_ppaddr = PL_ppaddr[OP_PREDEC]; |
79072805 LW |
859 | break; |
860 | ||
679d6c4e HS |
861 | case OP_I_POSTINC: |
862 | o->op_type = OP_I_PREINC; /* pre-increment is faster */ | |
863 | o->op_ppaddr = PL_ppaddr[OP_I_PREINC]; | |
864 | break; | |
865 | ||
866 | case OP_I_POSTDEC: | |
867 | o->op_type = OP_I_PREDEC; /* pre-decrement is faster */ | |
868 | o->op_ppaddr = PL_ppaddr[OP_I_PREDEC]; | |
869 | break; | |
870 | ||
79072805 LW |
871 | case OP_OR: |
872 | case OP_AND: | |
c963b151 | 873 | case OP_DOR: |
79072805 | 874 | case OP_COND_EXPR: |
0d863452 RH |
875 | case OP_ENTERGIVEN: |
876 | case OP_ENTERWHEN: | |
11343788 | 877 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
878 | scalarvoid(kid); |
879 | break; | |
5aabfad6 | 880 | |
a0d0e21e | 881 | case OP_NULL: |
11343788 | 882 | if (o->op_flags & OPf_STACKED) |
a0d0e21e | 883 | break; |
5aabfad6 | 884 | /* FALL THROUGH */ |
2ebea0a1 GS |
885 | case OP_NEXTSTATE: |
886 | case OP_DBSTATE: | |
79072805 LW |
887 | case OP_ENTERTRY: |
888 | case OP_ENTER: | |
11343788 | 889 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 890 | break; |
54310121 | 891 | /* FALL THROUGH */ |
463ee0b2 | 892 | case OP_SCOPE: |
79072805 LW |
893 | case OP_LEAVE: |
894 | case OP_LEAVETRY: | |
a0d0e21e | 895 | case OP_LEAVELOOP: |
79072805 | 896 | case OP_LINESEQ: |
79072805 | 897 | case OP_LIST: |
0d863452 RH |
898 | case OP_LEAVEGIVEN: |
899 | case OP_LEAVEWHEN: | |
11343788 | 900 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
901 | scalarvoid(kid); |
902 | break; | |
c90c0ff4 | 903 | case OP_ENTEREVAL: |
5196be3e | 904 | scalarkids(o); |
c90c0ff4 | 905 | break; |
5aabfad6 | 906 | case OP_REQUIRE: |
c90c0ff4 | 907 | /* all requires must return a boolean value */ |
5196be3e | 908 | o->op_flags &= ~OPf_WANT; |
d6483035 GS |
909 | /* FALL THROUGH */ |
910 | case OP_SCALAR: | |
5196be3e | 911 | return scalar(o); |
a0d0e21e | 912 | case OP_SPLIT: |
11343788 | 913 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e | 914 | if (!kPMOP->op_pmreplroot) |
12bcd1a6 | 915 | deprecate_old("implicit split to @_"); |
a0d0e21e LW |
916 | } |
917 | break; | |
79072805 | 918 | } |
411caa50 | 919 | if (useless && ckWARN(WARN_VOID)) |
9014280d | 920 | Perl_warner(aTHX_ packWARN(WARN_VOID), "Useless use of %s in void context", useless); |
11343788 | 921 | return o; |
79072805 LW |
922 | } |
923 | ||
924 | OP * | |
864dbfa3 | 925 | Perl_listkids(pTHX_ OP *o) |
79072805 | 926 | { |
11343788 | 927 | if (o && o->op_flags & OPf_KIDS) { |
6867be6d | 928 | OP *kid; |
11343788 | 929 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
930 | list(kid); |
931 | } | |
11343788 | 932 | return o; |
79072805 LW |
933 | } |
934 | ||
935 | OP * | |
864dbfa3 | 936 | Perl_list(pTHX_ OP *o) |
79072805 | 937 | { |
27da23d5 | 938 | dVAR; |
79072805 LW |
939 | OP *kid; |
940 | ||
a0d0e21e | 941 | /* assumes no premature commitment */ |
3280af22 | 942 | if (!o || (o->op_flags & OPf_WANT) || PL_error_count |
5dc0d613 | 943 | || o->op_type == OP_RETURN) |
7e363e51 | 944 | { |
11343788 | 945 | return o; |
7e363e51 | 946 | } |
79072805 | 947 | |
b162f9ea | 948 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
949 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
950 | { | |
b162f9ea | 951 | return o; /* As if inside SASSIGN */ |
7e363e51 | 952 | } |
1c846c1f | 953 | |
5dc0d613 | 954 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_LIST; |
79072805 | 955 | |
11343788 | 956 | switch (o->op_type) { |
79072805 LW |
957 | case OP_FLOP: |
958 | case OP_REPEAT: | |
11343788 | 959 | list(cBINOPo->op_first); |
79072805 LW |
960 | break; |
961 | case OP_OR: | |
962 | case OP_AND: | |
963 | case OP_COND_EXPR: | |
11343788 | 964 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
965 | list(kid); |
966 | break; | |
967 | default: | |
968 | case OP_MATCH: | |
8782bef2 | 969 | case OP_QR: |
79072805 LW |
970 | case OP_SUBST: |
971 | case OP_NULL: | |
11343788 | 972 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 973 | break; |
11343788 MB |
974 | if (!o->op_next && cUNOPo->op_first->op_type == OP_FLOP) { |
975 | list(cBINOPo->op_first); | |
976 | return gen_constant_list(o); | |
79072805 LW |
977 | } |
978 | case OP_LIST: | |
11343788 | 979 | listkids(o); |
79072805 LW |
980 | break; |
981 | case OP_LEAVE: | |
982 | case OP_LEAVETRY: | |
5dc0d613 | 983 | kid = cLISTOPo->op_first; |
54310121 | 984 | list(kid); |
155aba94 | 985 | while ((kid = kid->op_sibling)) { |
54310121 | 986 | if (kid->op_sibling) |
987 | scalarvoid(kid); | |
988 | else | |
989 | list(kid); | |
990 | } | |
11206fdd | 991 | PL_curcop = &PL_compiling; |
54310121 | 992 | break; |
748a9306 | 993 | case OP_SCOPE: |
79072805 | 994 | case OP_LINESEQ: |
11343788 | 995 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
996 | if (kid->op_sibling) |
997 | scalarvoid(kid); | |
998 | else | |
999 | list(kid); | |
1000 | } | |
11206fdd | 1001 | PL_curcop = &PL_compiling; |
79072805 | 1002 | break; |
c90c0ff4 | 1003 | case OP_REQUIRE: |
1004 | /* all requires must return a boolean value */ | |
5196be3e MB |
1005 | o->op_flags &= ~OPf_WANT; |
1006 | return scalar(o); | |
79072805 | 1007 | } |
11343788 | 1008 | return o; |
79072805 LW |
1009 | } |
1010 | ||
1011 | OP * | |
864dbfa3 | 1012 | Perl_scalarseq(pTHX_ OP *o) |
79072805 | 1013 | { |
97aff369 | 1014 | dVAR; |
11343788 | 1015 | if (o) { |
1496a290 AL |
1016 | const OPCODE type = o->op_type; |
1017 | ||
1018 | if (type == OP_LINESEQ || type == OP_SCOPE || | |
1019 | type == OP_LEAVE || type == OP_LEAVETRY) | |
463ee0b2 | 1020 | { |
6867be6d | 1021 | OP *kid; |
11343788 | 1022 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
ed6116ce | 1023 | if (kid->op_sibling) { |
463ee0b2 | 1024 | scalarvoid(kid); |
ed6116ce | 1025 | } |
463ee0b2 | 1026 | } |
3280af22 | 1027 | PL_curcop = &PL_compiling; |
79072805 | 1028 | } |
11343788 | 1029 | o->op_flags &= ~OPf_PARENS; |
3280af22 | 1030 | if (PL_hints & HINT_BLOCK_SCOPE) |
11343788 | 1031 | o->op_flags |= OPf_PARENS; |
79072805 | 1032 | } |
8990e307 | 1033 | else |
11343788 MB |
1034 | o = newOP(OP_STUB, 0); |
1035 | return o; | |
79072805 LW |
1036 | } |
1037 | ||
76e3520e | 1038 | STATIC OP * |
cea2e8a9 | 1039 | S_modkids(pTHX_ OP *o, I32 type) |
79072805 | 1040 | { |
11343788 | 1041 | if (o && o->op_flags & OPf_KIDS) { |
6867be6d | 1042 | OP *kid; |
11343788 | 1043 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 | 1044 | mod(kid, type); |
79072805 | 1045 | } |
11343788 | 1046 | return o; |
79072805 LW |
1047 | } |
1048 | ||
ff7298cb | 1049 | /* Propagate lvalue ("modifiable") context to an op and its children. |
ddeae0f1 DM |
1050 | * 'type' represents the context type, roughly based on the type of op that |
1051 | * would do the modifying, although local() is represented by OP_NULL. | |
1052 | * It's responsible for detecting things that can't be modified, flag | |
1053 | * things that need to behave specially in an lvalue context (e.g., "$$x = 5" | |
1054 | * might have to vivify a reference in $x), and so on. | |
1055 | * | |
1056 | * For example, "$a+1 = 2" would cause mod() to be called with o being | |
1057 | * OP_ADD and type being OP_SASSIGN, and would output an error. | |
1058 | */ | |
1059 | ||
79072805 | 1060 | OP * |
864dbfa3 | 1061 | Perl_mod(pTHX_ OP *o, I32 type) |
79072805 | 1062 | { |
27da23d5 | 1063 | dVAR; |
79072805 | 1064 | OP *kid; |
ddeae0f1 DM |
1065 | /* -1 = error on localize, 0 = ignore localize, 1 = ok to localize */ |
1066 | int localize = -1; | |
79072805 | 1067 | |
3280af22 | 1068 | if (!o || PL_error_count) |
11343788 | 1069 | return o; |
79072805 | 1070 | |
b162f9ea | 1071 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
1072 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
1073 | { | |
b162f9ea | 1074 | return o; |
7e363e51 | 1075 | } |
1c846c1f | 1076 | |
11343788 | 1077 | switch (o->op_type) { |
68dc0745 | 1078 | case OP_UNDEF: |
ddeae0f1 | 1079 | localize = 0; |
3280af22 | 1080 | PL_modcount++; |
5dc0d613 | 1081 | return o; |
a0d0e21e | 1082 | case OP_CONST: |
2e0ae2d3 | 1083 | if (!(o->op_private & OPpCONST_ARYBASE)) |
a0d0e21e | 1084 | goto nomod; |
54dc0f91 | 1085 | localize = 0; |
3280af22 | 1086 | if (PL_eval_start && PL_eval_start->op_type == OP_CONST) { |
fc15ae8f NC |
1087 | CopARYBASE_set(&PL_compiling, |
1088 | (I32)SvIV(cSVOPx(PL_eval_start)->op_sv)); | |
3280af22 | 1089 | PL_eval_start = 0; |
a0d0e21e LW |
1090 | } |
1091 | else if (!type) { | |
fc15ae8f NC |
1092 | SAVECOPARYBASE(&PL_compiling); |
1093 | CopARYBASE_set(&PL_compiling, 0); | |
a0d0e21e LW |
1094 | } |
1095 | else if (type == OP_REFGEN) | |
1096 | goto nomod; | |
1097 | else | |
cea2e8a9 | 1098 | Perl_croak(aTHX_ "That use of $[ is unsupported"); |
a0d0e21e | 1099 | break; |
5f05dabc | 1100 | case OP_STUB: |
eb8433b7 | 1101 | if (o->op_flags & OPf_PARENS || PL_madskills) |
5f05dabc | 1102 | break; |
1103 | goto nomod; | |
a0d0e21e LW |
1104 | case OP_ENTERSUB: |
1105 | if ((type == OP_UNDEF || type == OP_REFGEN) && | |
11343788 MB |
1106 | !(o->op_flags & OPf_STACKED)) { |
1107 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
e26df76a NC |
1108 | /* The default is to set op_private to the number of children, |
1109 | which for a UNOP such as RV2CV is always 1. And w're using | |
1110 | the bit for a flag in RV2CV, so we need it clear. */ | |
1111 | o->op_private &= ~1; | |
22c35a8c | 1112 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 | 1113 | assert(cUNOPo->op_first->op_type == OP_NULL); |
93c66552 | 1114 | op_null(((LISTOP*)cUNOPo->op_first)->op_first);/* disable pushmark */ |
79072805 LW |
1115 | break; |
1116 | } | |
95f0a2f1 SB |
1117 | else if (o->op_private & OPpENTERSUB_NOMOD) |
1118 | return o; | |
cd06dffe GS |
1119 | else { /* lvalue subroutine call */ |
1120 | o->op_private |= OPpLVAL_INTRO; | |
e6438c1a | 1121 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
4978d6d9 | 1122 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) { |
cd06dffe GS |
1123 | /* Backward compatibility mode: */ |
1124 | o->op_private |= OPpENTERSUB_INARGS; | |
1125 | break; | |
1126 | } | |
1127 | else { /* Compile-time error message: */ | |
1128 | OP *kid = cUNOPo->op_first; | |
1129 | CV *cv; | |
1130 | OP *okid; | |
1131 | ||
3ea285d1 AL |
1132 | if (kid->op_type != OP_PUSHMARK) { |
1133 | if (kid->op_type != OP_NULL || kid->op_targ != OP_LIST) | |
1134 | Perl_croak(aTHX_ | |
1135 | "panic: unexpected lvalue entersub " | |
1136 | "args: type/targ %ld:%"UVuf, | |
1137 | (long)kid->op_type, (UV)kid->op_targ); | |
1138 | kid = kLISTOP->op_first; | |
1139 | } | |
cd06dffe GS |
1140 | while (kid->op_sibling) |
1141 | kid = kid->op_sibling; | |
1142 | if (!(kid->op_type == OP_NULL && kid->op_targ == OP_RV2CV)) { | |
1143 | /* Indirect call */ | |
1144 | if (kid->op_type == OP_METHOD_NAMED | |
1145 | || kid->op_type == OP_METHOD) | |
1146 | { | |
87d7fd28 | 1147 | UNOP *newop; |
b2ffa427 | 1148 | |
87d7fd28 | 1149 | NewOp(1101, newop, 1, UNOP); |
349fd7b7 GS |
1150 | newop->op_type = OP_RV2CV; |
1151 | newop->op_ppaddr = PL_ppaddr[OP_RV2CV]; | |
5f66b61c | 1152 | newop->op_first = NULL; |
87d7fd28 GS |
1153 | newop->op_next = (OP*)newop; |
1154 | kid->op_sibling = (OP*)newop; | |
349fd7b7 | 1155 | newop->op_private |= OPpLVAL_INTRO; |
e26df76a | 1156 | newop->op_private &= ~1; |
cd06dffe GS |
1157 | break; |
1158 | } | |
b2ffa427 | 1159 | |
cd06dffe GS |
1160 | if (kid->op_type != OP_RV2CV) |
1161 | Perl_croak(aTHX_ | |
1162 | "panic: unexpected lvalue entersub " | |
55140b79 | 1163 | "entry via type/targ %ld:%"UVuf, |
3d811634 | 1164 | (long)kid->op_type, (UV)kid->op_targ); |
cd06dffe GS |
1165 | kid->op_private |= OPpLVAL_INTRO; |
1166 | break; /* Postpone until runtime */ | |
1167 | } | |
b2ffa427 NIS |
1168 | |
1169 | okid = kid; | |
cd06dffe GS |
1170 | kid = kUNOP->op_first; |
1171 | if (kid->op_type == OP_NULL && kid->op_targ == OP_RV2SV) | |
1172 | kid = kUNOP->op_first; | |
b2ffa427 | 1173 | if (kid->op_type == OP_NULL) |
cd06dffe GS |
1174 | Perl_croak(aTHX_ |
1175 | "Unexpected constant lvalue entersub " | |
55140b79 | 1176 | "entry via type/targ %ld:%"UVuf, |
3d811634 | 1177 | (long)kid->op_type, (UV)kid->op_targ); |
cd06dffe GS |
1178 | if (kid->op_type != OP_GV) { |
1179 | /* Restore RV2CV to check lvalueness */ | |
1180 | restore_2cv: | |
1181 | if (kid->op_next && kid->op_next != kid) { /* Happens? */ | |
1182 | okid->op_next = kid->op_next; | |
1183 | kid->op_next = okid; | |
1184 | } | |
1185 | else | |
5f66b61c | 1186 | okid->op_next = NULL; |
cd06dffe GS |
1187 | okid->op_type = OP_RV2CV; |
1188 | okid->op_targ = 0; | |
1189 | okid->op_ppaddr = PL_ppaddr[OP_RV2CV]; | |
1190 | okid->op_private |= OPpLVAL_INTRO; | |
e26df76a | 1191 | okid->op_private &= ~1; |
cd06dffe GS |
1192 | break; |
1193 | } | |
b2ffa427 | 1194 | |
638eceb6 | 1195 | cv = GvCV(kGVOP_gv); |
1c846c1f | 1196 | if (!cv) |
cd06dffe GS |
1197 | goto restore_2cv; |
1198 | if (CvLVALUE(cv)) | |
1199 | break; | |
1200 | } | |
1201 | } | |
79072805 LW |
1202 | /* FALL THROUGH */ |
1203 | default: | |
a0d0e21e | 1204 | nomod: |
6fbb66d6 NC |
1205 | /* grep, foreach, subcalls, refgen */ |
1206 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) | |
a0d0e21e | 1207 | break; |
cea2e8a9 | 1208 | yyerror(Perl_form(aTHX_ "Can't modify %s in %s", |
638bc118 | 1209 | (o->op_type == OP_NULL && (o->op_flags & OPf_SPECIAL) |
cd06dffe GS |
1210 | ? "do block" |
1211 | : (o->op_type == OP_ENTERSUB | |
1212 | ? "non-lvalue subroutine call" | |
53e06cf0 | 1213 | : OP_DESC(o))), |
22c35a8c | 1214 | type ? PL_op_desc[type] : "local")); |
11343788 | 1215 | return o; |
79072805 | 1216 | |
a0d0e21e LW |
1217 | case OP_PREINC: |
1218 | case OP_PREDEC: | |
1219 | case OP_POW: | |
1220 | case OP_MULTIPLY: | |
1221 | case OP_DIVIDE: | |
1222 | case OP_MODULO: | |
1223 | case OP_REPEAT: | |
1224 | case OP_ADD: | |
1225 | case OP_SUBTRACT: | |
1226 | case OP_CONCAT: | |
1227 | case OP_LEFT_SHIFT: | |
1228 | case OP_RIGHT_SHIFT: | |
1229 | case OP_BIT_AND: | |
1230 | case OP_BIT_XOR: | |
1231 | case OP_BIT_OR: | |
1232 | case OP_I_MULTIPLY: | |
1233 | case OP_I_DIVIDE: | |
1234 | case OP_I_MODULO: | |
1235 | case OP_I_ADD: | |
1236 | case OP_I_SUBTRACT: | |
11343788 | 1237 | if (!(o->op_flags & OPf_STACKED)) |
a0d0e21e | 1238 | goto nomod; |
3280af22 | 1239 | PL_modcount++; |
a0d0e21e | 1240 | break; |
b2ffa427 | 1241 | |
79072805 | 1242 | case OP_COND_EXPR: |
ddeae0f1 | 1243 | localize = 1; |
11343788 | 1244 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 | 1245 | mod(kid, type); |
79072805 LW |
1246 | break; |
1247 | ||
1248 | case OP_RV2AV: | |
1249 | case OP_RV2HV: | |
11343788 | 1250 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) { |
e6438c1a | 1251 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
11343788 | 1252 | return o; /* Treat \(@foo) like ordinary list. */ |
748a9306 LW |
1253 | } |
1254 | /* FALL THROUGH */ | |
79072805 | 1255 | case OP_RV2GV: |
5dc0d613 | 1256 | if (scalar_mod_type(o, type)) |
3fe9a6f1 | 1257 | goto nomod; |
11343788 | 1258 | ref(cUNOPo->op_first, o->op_type); |
79072805 | 1259 | /* FALL THROUGH */ |
79072805 LW |
1260 | case OP_ASLICE: |
1261 | case OP_HSLICE: | |
78f9721b SM |
1262 | if (type == OP_LEAVESUBLV) |
1263 | o->op_private |= OPpMAYBE_LVSUB; | |
ddeae0f1 | 1264 | localize = 1; |
78f9721b SM |
1265 | /* FALL THROUGH */ |
1266 | case OP_AASSIGN: | |
93a17b20 LW |
1267 | case OP_NEXTSTATE: |
1268 | case OP_DBSTATE: | |
e6438c1a | 1269 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
79072805 | 1270 | break; |
463ee0b2 | 1271 | case OP_RV2SV: |
aeea060c | 1272 | ref(cUNOPo->op_first, o->op_type); |
ddeae0f1 | 1273 | localize = 1; |
463ee0b2 | 1274 | /* FALL THROUGH */ |
79072805 | 1275 | case OP_GV: |
463ee0b2 | 1276 | case OP_AV2ARYLEN: |
3280af22 | 1277 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 1278 | case OP_SASSIGN: |
bf4b1e52 GS |
1279 | case OP_ANDASSIGN: |
1280 | case OP_ORASSIGN: | |
c963b151 | 1281 | case OP_DORASSIGN: |
ddeae0f1 DM |
1282 | PL_modcount++; |
1283 | break; | |
1284 | ||
8990e307 | 1285 | case OP_AELEMFAST: |
6a077020 | 1286 | localize = -1; |
3280af22 | 1287 | PL_modcount++; |
8990e307 LW |
1288 | break; |
1289 | ||
748a9306 LW |
1290 | case OP_PADAV: |
1291 | case OP_PADHV: | |
e6438c1a | 1292 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
5196be3e MB |
1293 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) |
1294 | return o; /* Treat \(@foo) like ordinary list. */ | |
1295 | if (scalar_mod_type(o, type)) | |
3fe9a6f1 | 1296 | goto nomod; |
78f9721b SM |
1297 | if (type == OP_LEAVESUBLV) |
1298 | o->op_private |= OPpMAYBE_LVSUB; | |
748a9306 LW |
1299 | /* FALL THROUGH */ |
1300 | case OP_PADSV: | |
3280af22 | 1301 | PL_modcount++; |
ddeae0f1 | 1302 | if (!type) /* local() */ |
cea2e8a9 | 1303 | Perl_croak(aTHX_ "Can't localize lexical variable %s", |
dd2155a4 | 1304 | PAD_COMPNAME_PV(o->op_targ)); |
463ee0b2 LW |
1305 | break; |
1306 | ||
748a9306 | 1307 | case OP_PUSHMARK: |
ddeae0f1 | 1308 | localize = 0; |
748a9306 | 1309 | break; |
b2ffa427 | 1310 | |
69969c6f SB |
1311 | case OP_KEYS: |
1312 | if (type != OP_SASSIGN) | |
1313 | goto nomod; | |
5d82c453 GA |
1314 | goto lvalue_func; |
1315 | case OP_SUBSTR: | |
1316 | if (o->op_private == 4) /* don't allow 4 arg substr as lvalue */ | |
1317 | goto nomod; | |
5f05dabc | 1318 | /* FALL THROUGH */ |
a0d0e21e | 1319 | case OP_POS: |
463ee0b2 | 1320 | case OP_VEC: |
78f9721b SM |
1321 | if (type == OP_LEAVESUBLV) |
1322 | o->op_private |= OPpMAYBE_LVSUB; | |
5d82c453 | 1323 | lvalue_func: |
11343788 MB |
1324 | pad_free(o->op_targ); |
1325 | o->op_targ = pad_alloc(o->op_type, SVs_PADMY); | |
5dc0d613 | 1326 | assert(SvTYPE(PAD_SV(o->op_targ)) == SVt_NULL); |
11343788 MB |
1327 | if (o->op_flags & OPf_KIDS) |
1328 | mod(cBINOPo->op_first->op_sibling, type); | |
463ee0b2 | 1329 | break; |
a0d0e21e | 1330 | |
463ee0b2 LW |
1331 | case OP_AELEM: |
1332 | case OP_HELEM: | |
11343788 | 1333 | ref(cBINOPo->op_first, o->op_type); |
68dc0745 | 1334 | if (type == OP_ENTERSUB && |
5dc0d613 MB |
1335 | !(o->op_private & (OPpLVAL_INTRO | OPpDEREF))) |
1336 | o->op_private |= OPpLVAL_DEFER; | |
78f9721b SM |
1337 | if (type == OP_LEAVESUBLV) |
1338 | o->op_private |= OPpMAYBE_LVSUB; | |
ddeae0f1 | 1339 | localize = 1; |
3280af22 | 1340 | PL_modcount++; |
463ee0b2 LW |
1341 | break; |
1342 | ||
1343 | case OP_SCOPE: | |
1344 | case OP_LEAVE: | |
1345 | case OP_ENTER: | |
78f9721b | 1346 | case OP_LINESEQ: |
ddeae0f1 | 1347 | localize = 0; |
11343788 MB |
1348 | if (o->op_flags & OPf_KIDS) |
1349 | mod(cLISTOPo->op_last, type); | |
a0d0e21e LW |
1350 | break; |
1351 | ||
1352 | case OP_NULL: | |
ddeae0f1 | 1353 | localize = 0; |
638bc118 GS |
1354 | if (o->op_flags & OPf_SPECIAL) /* do BLOCK */ |
1355 | goto nomod; | |
1356 | else if (!(o->op_flags & OPf_KIDS)) | |
463ee0b2 | 1357 | break; |
11343788 MB |
1358 | if (o->op_targ != OP_LIST) { |
1359 | mod(cBINOPo->op_first, type); | |
a0d0e21e LW |
1360 | break; |
1361 | } | |
1362 | /* FALL THROUGH */ | |
463ee0b2 | 1363 | case OP_LIST: |
ddeae0f1 | 1364 | localize = 0; |
11343788 | 1365 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1366 | mod(kid, type); |
1367 | break; | |
78f9721b SM |
1368 | |
1369 | case OP_RETURN: | |
1370 | if (type != OP_LEAVESUBLV) | |
1371 | goto nomod; | |
1372 | break; /* mod()ing was handled by ck_return() */ | |
463ee0b2 | 1373 | } |
58d95175 | 1374 | |
8be1be90 AMS |
1375 | /* [20011101.069] File test operators interpret OPf_REF to mean that |
1376 | their argument is a filehandle; thus \stat(".") should not set | |
1377 | it. AMS 20011102 */ | |
1378 | if (type == OP_REFGEN && | |
1379 | PL_check[o->op_type] == MEMBER_TO_FPTR(Perl_ck_ftst)) | |
1380 | return o; | |
1381 | ||
1382 | if (type != OP_LEAVESUBLV) | |
1383 | o->op_flags |= OPf_MOD; | |
1384 | ||
1385 | if (type == OP_AASSIGN || type == OP_SASSIGN) | |
1386 | o->op_flags |= OPf_SPECIAL|OPf_REF; | |
ddeae0f1 DM |
1387 | else if (!type) { /* local() */ |
1388 | switch (localize) { | |
1389 | case 1: | |
1390 | o->op_private |= OPpLVAL_INTRO; | |
1391 | o->op_flags &= ~OPf_SPECIAL; | |
1392 | PL_hints |= HINT_BLOCK_SCOPE; | |
1393 | break; | |
1394 | case 0: | |
1395 | break; | |
1396 | case -1: | |
1397 | if (ckWARN(WARN_SYNTAX)) { | |
1398 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), | |
1399 | "Useless localization of %s", OP_DESC(o)); | |
1400 | } | |
1401 | } | |
463ee0b2 | 1402 | } |
8be1be90 AMS |
1403 | else if (type != OP_GREPSTART && type != OP_ENTERSUB |
1404 | && type != OP_LEAVESUBLV) | |
1405 | o->op_flags |= OPf_REF; | |
11343788 | 1406 | return o; |
463ee0b2 LW |
1407 | } |
1408 | ||
864dbfa3 | 1409 | STATIC bool |
5f66b61c | 1410 | S_scalar_mod_type(const OP *o, I32 type) |
3fe9a6f1 | 1411 | { |
1412 | switch (type) { | |
1413 | case OP_SASSIGN: | |
5196be3e | 1414 | if (o->op_type == OP_RV2GV) |
3fe9a6f1 | 1415 | return FALSE; |
1416 | /* FALL THROUGH */ | |
1417 | case OP_PREINC: | |
1418 | case OP_PREDEC: | |
1419 | case OP_POSTINC: | |
1420 | case OP_POSTDEC: | |
1421 | case OP_I_PREINC: | |
1422 | case OP_I_PREDEC: | |
1423 | case OP_I_POSTINC: | |
1424 | case OP_I_POSTDEC: | |
1425 | case OP_POW: | |
1426 | case OP_MULTIPLY: | |
1427 | case OP_DIVIDE: | |
1428 | case OP_MODULO: | |
1429 | case OP_REPEAT: | |
1430 | case OP_ADD: | |
1431 | case OP_SUBTRACT: | |
1432 | case OP_I_MULTIPLY: | |
1433 | case OP_I_DIVIDE: | |
1434 | case OP_I_MODULO: | |
1435 | case OP_I_ADD: | |
1436 | case OP_I_SUBTRACT: | |
1437 | case OP_LEFT_SHIFT: | |
1438 | case OP_RIGHT_SHIFT: | |
1439 | case OP_BIT_AND: | |
1440 | case OP_BIT_XOR: | |
1441 | case OP_BIT_OR: | |
1442 | case OP_CONCAT: | |
1443 | case OP_SUBST: | |
1444 | case OP_TRANS: | |
49e9fbe6 GS |
1445 | case OP_READ: |
1446 | case OP_SYSREAD: | |
1447 | case OP_RECV: | |
bf4b1e52 GS |
1448 | case OP_ANDASSIGN: |
1449 | case OP_ORASSIGN: | |
3fe9a6f1 | 1450 | return TRUE; |
1451 | default: | |
1452 | return FALSE; | |
1453 | } | |
1454 | } | |
1455 | ||
35cd451c | 1456 | STATIC bool |
5f66b61c | 1457 | S_is_handle_constructor(const OP *o, I32 numargs) |
35cd451c GS |
1458 | { |
1459 | switch (o->op_type) { | |
1460 | case OP_PIPE_OP: | |
1461 | case OP_SOCKPAIR: | |
504618e9 | 1462 | if (numargs == 2) |
35cd451c GS |
1463 | return TRUE; |
1464 | /* FALL THROUGH */ | |
1465 | case OP_SYSOPEN: | |
1466 | case OP_OPEN: | |
ded8aa31 | 1467 | case OP_SELECT: /* XXX c.f. SelectSaver.pm */ |
35cd451c GS |
1468 | case OP_SOCKET: |
1469 | case OP_OPEN_DIR: | |
1470 | case OP_ACCEPT: | |
504618e9 | 1471 | if (numargs == 1) |
35cd451c | 1472 | return TRUE; |
5f66b61c | 1473 | /* FALLTHROUGH */ |
35cd451c GS |
1474 | default: |
1475 | return FALSE; | |
1476 | } | |
1477 | } | |
1478 | ||
463ee0b2 | 1479 | OP * |
864dbfa3 | 1480 | Perl_refkids(pTHX_ OP *o, I32 type) |
463ee0b2 | 1481 | { |
11343788 | 1482 | if (o && o->op_flags & OPf_KIDS) { |
6867be6d | 1483 | OP *kid; |
11343788 | 1484 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1485 | ref(kid, type); |
1486 | } | |
11343788 | 1487 | return o; |
463ee0b2 LW |
1488 | } |
1489 | ||
1490 | OP * | |
e4c5ccf3 | 1491 | Perl_doref(pTHX_ OP *o, I32 type, bool set_op_ref) |
463ee0b2 | 1492 | { |
27da23d5 | 1493 | dVAR; |
463ee0b2 | 1494 | OP *kid; |
463ee0b2 | 1495 | |
3280af22 | 1496 | if (!o || PL_error_count) |
11343788 | 1497 | return o; |
463ee0b2 | 1498 | |
11343788 | 1499 | switch (o->op_type) { |
a0d0e21e | 1500 | case OP_ENTERSUB: |
afebc493 | 1501 | if ((type == OP_EXISTS || type == OP_DEFINED || type == OP_LOCK) && |
11343788 MB |
1502 | !(o->op_flags & OPf_STACKED)) { |
1503 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
22c35a8c | 1504 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 | 1505 | assert(cUNOPo->op_first->op_type == OP_NULL); |
93c66552 | 1506 | op_null(((LISTOP*)cUNOPo->op_first)->op_first); /* disable pushmark */ |
11343788 | 1507 | o->op_flags |= OPf_SPECIAL; |
e26df76a | 1508 | o->op_private &= ~1; |
8990e307 LW |
1509 | } |
1510 | break; | |
aeea060c | 1511 | |
463ee0b2 | 1512 | case OP_COND_EXPR: |
11343788 | 1513 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
e4c5ccf3 | 1514 | doref(kid, type, set_op_ref); |
463ee0b2 | 1515 | break; |
8990e307 | 1516 | case OP_RV2SV: |
35cd451c GS |
1517 | if (type == OP_DEFINED) |
1518 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
e4c5ccf3 | 1519 | doref(cUNOPo->op_first, o->op_type, set_op_ref); |
4633a7c4 LW |
1520 | /* FALL THROUGH */ |
1521 | case OP_PADSV: | |
5f05dabc | 1522 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1523 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1524 | : type == OP_RV2HV ? OPpDEREF_HV | |
1525 | : OPpDEREF_SV); | |
11343788 | 1526 | o->op_flags |= OPf_MOD; |
a0d0e21e | 1527 | } |
8990e307 | 1528 | break; |
1c846c1f | 1529 | |
2faa37cc | 1530 | case OP_THREADSV: |
a863c7d1 MB |
1531 | o->op_flags |= OPf_MOD; /* XXX ??? */ |
1532 | break; | |
1533 | ||
463ee0b2 LW |
1534 | case OP_RV2AV: |
1535 | case OP_RV2HV: | |
e4c5ccf3 RH |
1536 | if (set_op_ref) |
1537 | o->op_flags |= OPf_REF; | |
8990e307 | 1538 | /* FALL THROUGH */ |
463ee0b2 | 1539 | case OP_RV2GV: |
35cd451c GS |
1540 | if (type == OP_DEFINED) |
1541 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
e4c5ccf3 | 1542 | doref(cUNOPo->op_first, o->op_type, set_op_ref); |
463ee0b2 | 1543 | break; |
8990e307 | 1544 | |
463ee0b2 LW |
1545 | case OP_PADAV: |
1546 | case OP_PADHV: | |
e4c5ccf3 RH |
1547 | if (set_op_ref) |
1548 | o->op_flags |= OPf_REF; | |
79072805 | 1549 | break; |
aeea060c | 1550 | |
8990e307 | 1551 | case OP_SCALAR: |
79072805 | 1552 | case OP_NULL: |
11343788 | 1553 | if (!(o->op_flags & OPf_KIDS)) |
463ee0b2 | 1554 | break; |
e4c5ccf3 | 1555 | doref(cBINOPo->op_first, type, set_op_ref); |
79072805 LW |
1556 | break; |
1557 | case OP_AELEM: | |
1558 | case OP_HELEM: | |
e4c5ccf3 | 1559 | doref(cBINOPo->op_first, o->op_type, set_op_ref); |
5f05dabc | 1560 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1561 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1562 | : type == OP_RV2HV ? OPpDEREF_HV | |
1563 | : OPpDEREF_SV); | |
11343788 | 1564 | o->op_flags |= OPf_MOD; |
8990e307 | 1565 | } |
79072805 LW |
1566 | break; |
1567 | ||
463ee0b2 | 1568 | case OP_SCOPE: |
79072805 | 1569 | case OP_LEAVE: |
e4c5ccf3 RH |
1570 | set_op_ref = FALSE; |
1571 | /* FALL THROUGH */ | |
79072805 | 1572 | case OP_ENTER: |
8990e307 | 1573 | case OP_LIST: |
11343788 | 1574 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1575 | break; |
e4c5ccf3 | 1576 | doref(cLISTOPo->op_last, type, set_op_ref); |
79072805 | 1577 | break; |
a0d0e21e LW |
1578 | default: |
1579 | break; | |
79072805 | 1580 | } |
11343788 | 1581 | return scalar(o); |
8990e307 | 1582 | |
79072805 LW |
1583 | } |
1584 | ||
09bef843 SB |
1585 | STATIC OP * |
1586 | S_dup_attrlist(pTHX_ OP *o) | |
1587 | { | |
97aff369 | 1588 | dVAR; |
0bd48802 | 1589 | OP *rop; |
09bef843 SB |
1590 | |
1591 | /* An attrlist is either a simple OP_CONST or an OP_LIST with kids, | |
1592 | * where the first kid is OP_PUSHMARK and the remaining ones | |
1593 | * are OP_CONST. We need to push the OP_CONST values. | |
1594 | */ | |
1595 | if (o->op_type == OP_CONST) | |
b37c2d43 | 1596 | rop = newSVOP(OP_CONST, o->op_flags, SvREFCNT_inc_NN(cSVOPo->op_sv)); |
eb8433b7 NC |
1597 | #ifdef PERL_MAD |
1598 | else if (o->op_type == OP_NULL) | |
1d866c12 | 1599 | rop = NULL; |
eb8433b7 | 1600 | #endif |
09bef843 SB |
1601 | else { |
1602 | assert((o->op_type == OP_LIST) && (o->op_flags & OPf_KIDS)); | |
5f66b61c | 1603 | rop = NULL; |
09bef843 SB |
1604 | for (o = cLISTOPo->op_first; o; o=o->op_sibling) { |
1605 | if (o->op_type == OP_CONST) | |
1606 | rop = append_elem(OP_LIST, rop, | |
1607 | newSVOP(OP_CONST, o->op_flags, | |
b37c2d43 | 1608 | SvREFCNT_inc_NN(cSVOPo->op_sv))); |
09bef843 SB |
1609 | } |
1610 | } | |
1611 | return rop; | |
1612 | } | |
1613 | ||
1614 | STATIC void | |
95f0a2f1 | 1615 | S_apply_attrs(pTHX_ HV *stash, SV *target, OP *attrs, bool for_my) |
09bef843 | 1616 | { |
27da23d5 | 1617 | dVAR; |
09bef843 SB |
1618 | SV *stashsv; |
1619 | ||
1620 | /* fake up C<use attributes $pkg,$rv,@attrs> */ | |
1621 | ENTER; /* need to protect against side-effects of 'use' */ | |
1622 | SAVEINT(PL_expect); | |
5aaec2b4 | 1623 | stashsv = stash ? newSVhek(HvNAME_HEK(stash)) : &PL_sv_no; |
e4783991 | 1624 | |
09bef843 | 1625 | #define ATTRSMODULE "attributes" |
95f0a2f1 SB |
1626 | #define ATTRSMODULE_PM "attributes.pm" |
1627 | ||
1628 | if (for_my) { | |
95f0a2f1 | 1629 | /* Don't force the C<use> if we don't need it. */ |
a4fc7abc | 1630 | SV * const * const svp = hv_fetchs(GvHVn(PL_incgv), ATTRSMODULE_PM, FALSE); |
95f0a2f1 | 1631 | if (svp && *svp != &PL_sv_undef) |
6f207bd3 | 1632 | NOOP; /* already in %INC */ |
95f0a2f1 SB |
1633 | else |
1634 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, | |
6136c704 | 1635 | newSVpvs(ATTRSMODULE), NULL); |
95f0a2f1 SB |
1636 | } |
1637 | else { | |
1638 | Perl_load_module(aTHX_ PERL_LOADMOD_IMPORT_OPS, | |
6136c704 AL |
1639 | newSVpvs(ATTRSMODULE), |
1640 | NULL, | |
95f0a2f1 SB |
1641 | prepend_elem(OP_LIST, |
1642 | newSVOP(OP_CONST, 0, stashsv), | |
1643 | prepend_elem(OP_LIST, | |
1644 | newSVOP(OP_CONST, 0, | |
1645 | newRV(target)), | |
1646 | dup_attrlist(attrs)))); | |
1647 | } | |
09bef843 SB |
1648 | LEAVE; |
1649 | } | |
1650 | ||
95f0a2f1 SB |
1651 | STATIC void |
1652 | S_apply_attrs_my(pTHX_ HV *stash, OP *target, OP *attrs, OP **imopsp) | |
1653 | { | |
97aff369 | 1654 | dVAR; |
95f0a2f1 SB |
1655 | OP *pack, *imop, *arg; |
1656 | SV *meth, *stashsv; | |
1657 | ||
1658 | if (!attrs) | |
1659 | return; | |
1660 | ||
1661 | assert(target->op_type == OP_PADSV || | |
1662 | target->op_type == OP_PADHV || | |
1663 | target->op_type == OP_PADAV); | |
1664 | ||
1665 | /* Ensure that attributes.pm is loaded. */ | |
dd2155a4 | 1666 | apply_attrs(stash, PAD_SV(target->op_targ), attrs, TRUE); |
95f0a2f1 SB |
1667 | |
1668 | /* Need package name for method call. */ | |
6136c704 | 1669 | pack = newSVOP(OP_CONST, 0, newSVpvs(ATTRSMODULE)); |
95f0a2f1 SB |
1670 | |
1671 | /* Build up the real arg-list. */ | |
5aaec2b4 NC |
1672 | stashsv = stash ? newSVhek(HvNAME_HEK(stash)) : &PL_sv_no; |
1673 | ||
95f0a2f1 SB |
1674 | arg = newOP(OP_PADSV, 0); |
1675 | arg->op_targ = target->op_targ; | |
1676 | arg = prepend_elem(OP_LIST, | |
1677 | newSVOP(OP_CONST, 0, stashsv), | |
1678 | prepend_elem(OP_LIST, | |
1679 | newUNOP(OP_REFGEN, 0, | |
1680 | mod(arg, OP_REFGEN)), | |
1681 | dup_attrlist(attrs))); | |
1682 | ||
1683 | /* Fake up a method call to import */ | |
18916d0d | 1684 | meth = newSVpvs_share("import"); |
95f0a2f1 SB |
1685 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL|OPf_WANT_VOID, |
1686 | append_elem(OP_LIST, | |
1687 | prepend_elem(OP_LIST, pack, list(arg)), | |
1688 | newSVOP(OP_METHOD_NAMED, 0, meth))); | |
1689 | imop->op_private |= OPpENTERSUB_NOMOD; | |
1690 | ||
1691 | /* Combine the ops. */ | |
1692 | *imopsp = append_elem(OP_LIST, *imopsp, imop); | |
1693 | } | |
1694 | ||
1695 | /* | |
1696 | =notfor apidoc apply_attrs_string | |
1697 | ||
1698 | Attempts to apply a list of attributes specified by the C<attrstr> and | |
1699 | C<len> arguments to the subroutine identified by the C<cv> argument which | |
1700 | is expected to be associated with the package identified by the C<stashpv> | |
1701 | argument (see L<attributes>). It gets this wrong, though, in that it | |
1702 | does not correctly identify the boundaries of the individual attribute | |
1703 | specifications within C<attrstr>. This is not really intended for the | |
1704 | public API, but has to be listed here for systems such as AIX which | |
1705 | need an explicit export list for symbols. (It's called from XS code | |
1706 | in support of the C<ATTRS:> keyword from F<xsubpp>.) Patches to fix it | |
1707 | to respect attribute syntax properly would be welcome. | |
1708 | ||
1709 | =cut | |
1710 | */ | |
1711 | ||
be3174d2 | 1712 | void |
6867be6d AL |
1713 | Perl_apply_attrs_string(pTHX_ const char *stashpv, CV *cv, |
1714 | const char *attrstr, STRLEN len) | |
be3174d2 | 1715 | { |
5f66b61c | 1716 | OP *attrs = NULL; |
be3174d2 GS |
1717 | |
1718 | if (!len) { | |
1719 | len = strlen(attrstr); | |
1720 | } | |
1721 | ||
1722 | while (len) { | |
1723 | for (; isSPACE(*attrstr) && len; --len, ++attrstr) ; | |
1724 | if (len) { | |
890ce7af | 1725 | const char * const sstr = attrstr; |
be3174d2 GS |
1726 | for (; !isSPACE(*attrstr) && len; --len, ++attrstr) ; |
1727 | attrs = append_elem(OP_LIST, attrs, | |
1728 | newSVOP(OP_CONST, 0, | |
1729 | newSVpvn(sstr, attrstr-sstr))); | |
1730 | } | |
1731 | } | |
1732 | ||
1733 | Perl_load_module(aTHX_ PERL_LOADMOD_IMPORT_OPS, | |
6136c704 | 1734 | newSVpvs(ATTRSMODULE), |
a0714e2c | 1735 | NULL, prepend_elem(OP_LIST, |
be3174d2 GS |
1736 | newSVOP(OP_CONST, 0, newSVpv(stashpv,0)), |
1737 | prepend_elem(OP_LIST, | |
1738 | newSVOP(OP_CONST, 0, | |
1739 | newRV((SV*)cv)), | |
1740 | attrs))); | |
1741 | } | |
1742 | ||
09bef843 | 1743 | STATIC OP * |
95f0a2f1 | 1744 | S_my_kid(pTHX_ OP *o, OP *attrs, OP **imopsp) |
93a17b20 | 1745 | { |
97aff369 | 1746 | dVAR; |
93a17b20 LW |
1747 | I32 type; |
1748 | ||
3280af22 | 1749 | if (!o || PL_error_count) |
11343788 | 1750 | return o; |
93a17b20 | 1751 | |
bc61e325 | 1752 | type = o->op_type; |
eb8433b7 NC |
1753 | if (PL_madskills && type == OP_NULL && o->op_flags & OPf_KIDS) { |
1754 | (void)my_kid(cUNOPo->op_first, attrs, imopsp); | |
1755 | return o; | |
1756 | } | |
1757 | ||
93a17b20 | 1758 | if (type == OP_LIST) { |
6867be6d | 1759 | OP *kid; |
11343788 | 1760 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
95f0a2f1 | 1761 | my_kid(kid, attrs, imopsp); |
eb8433b7 NC |
1762 | } else if (type == OP_UNDEF |
1763 | #ifdef PERL_MAD | |
1764 | || type == OP_STUB | |
1765 | #endif | |
1766 | ) { | |
7766148a | 1767 | return o; |
77ca0c92 LW |
1768 | } else if (type == OP_RV2SV || /* "our" declaration */ |
1769 | type == OP_RV2AV || | |
1770 | type == OP_RV2HV) { /* XXX does this let anything illegal in? */ | |
1ce0b88c RGS |
1771 | if (cUNOPo->op_first->op_type != OP_GV) { /* MJD 20011224 */ |
1772 | yyerror(Perl_form(aTHX_ "Can't declare %s in %s", | |
952306ac RGS |
1773 | OP_DESC(o), |
1774 | PL_in_my == KEY_our ? "our" : PL_in_my == KEY_state ? "state" : "my")); | |
1ce0b88c | 1775 | } else if (attrs) { |
551405c4 | 1776 | GV * const gv = cGVOPx_gv(cUNOPo->op_first); |
1ce0b88c | 1777 | PL_in_my = FALSE; |
5c284bb0 | 1778 | PL_in_my_stash = NULL; |
1ce0b88c RGS |
1779 | apply_attrs(GvSTASH(gv), |
1780 | (type == OP_RV2SV ? GvSV(gv) : | |
1781 | type == OP_RV2AV ? (SV*)GvAV(gv) : | |
1782 | type == OP_RV2HV ? (SV*)GvHV(gv) : (SV*)gv), | |
1783 | attrs, FALSE); | |
1784 | } | |
192587c2 | 1785 | o->op_private |= OPpOUR_INTRO; |
77ca0c92 | 1786 | return o; |
95f0a2f1 SB |
1787 | } |
1788 | else if (type != OP_PADSV && | |
93a17b20 LW |
1789 | type != OP_PADAV && |
1790 | type != OP_PADHV && | |
1791 | type != OP_PUSHMARK) | |
1792 | { | |
eb64745e | 1793 | yyerror(Perl_form(aTHX_ "Can't declare %s in \"%s\"", |
53e06cf0 | 1794 | OP_DESC(o), |
952306ac | 1795 | PL_in_my == KEY_our ? "our" : PL_in_my == KEY_state ? "state" : "my")); |
11343788 | 1796 | return o; |
93a17b20 | 1797 | } |
09bef843 SB |
1798 | else if (attrs && type != OP_PUSHMARK) { |
1799 | HV *stash; | |
09bef843 | 1800 | |
eb64745e | 1801 | PL_in_my = FALSE; |
5c284bb0 | 1802 | PL_in_my_stash = NULL; |
eb64745e | 1803 | |
09bef843 | 1804 | /* check for C<my Dog $spot> when deciding package */ |
dd2155a4 DM |
1805 | stash = PAD_COMPNAME_TYPE(o->op_targ); |
1806 | if (!stash) | |
09bef843 | 1807 | stash = PL_curstash; |
95f0a2f1 | 1808 | apply_attrs_my(stash, o, attrs, imopsp); |
09bef843 | 1809 | } |
11343788 MB |
1810 | o->op_flags |= OPf_MOD; |
1811 | o->op_private |= OPpLVAL_INTRO; | |
952306ac RGS |
1812 | if (PL_in_my == KEY_state) |
1813 | o->op_private |= OPpPAD_STATE; | |
11343788 | 1814 | return o; |
93a17b20 LW |
1815 | } |
1816 | ||
1817 | OP * | |
09bef843 SB |
1818 | Perl_my_attrs(pTHX_ OP *o, OP *attrs) |
1819 | { | |
97aff369 | 1820 | dVAR; |
0bd48802 | 1821 | OP *rops; |
95f0a2f1 SB |
1822 | int maybe_scalar = 0; |
1823 | ||
d2be0de5 | 1824 | /* [perl #17376]: this appears to be premature, and results in code such as |
c754c3d7 | 1825 | C< our(%x); > executing in list mode rather than void mode */ |
d2be0de5 | 1826 | #if 0 |
09bef843 SB |
1827 | if (o->op_flags & OPf_PARENS) |
1828 | list(o); | |
95f0a2f1 SB |
1829 | else |
1830 | maybe_scalar = 1; | |
d2be0de5 YST |
1831 | #else |
1832 | maybe_scalar = 1; | |
1833 | #endif | |
09bef843 SB |
1834 | if (attrs) |
1835 | SAVEFREEOP(attrs); | |
5f66b61c | 1836 | rops = NULL; |
95f0a2f1 SB |
1837 | o = my_kid(o, attrs, &rops); |
1838 | if (rops) { | |
1839 | if (maybe_scalar && o->op_type == OP_PADSV) { | |
1840 | o = scalar(append_list(OP_LIST, (LISTOP*)rops, (LISTOP*)o)); | |
1841 | o->op_private |= OPpLVAL_INTRO; | |
1842 | } | |
1843 | else | |
1844 | o = append_list(OP_LIST, (LISTOP*)o, (LISTOP*)rops); | |
1845 | } | |
eb64745e | 1846 | PL_in_my = FALSE; |
5c284bb0 | 1847 | PL_in_my_stash = NULL; |
eb64745e | 1848 | return o; |
09bef843 SB |
1849 | } |
1850 | ||
1851 | OP * | |
1852 | Perl_my(pTHX_ OP *o) | |
1853 | { | |
5f66b61c | 1854 | return my_attrs(o, NULL); |
09bef843 SB |
1855 | } |
1856 | ||
1857 | OP * | |
864dbfa3 | 1858 | Perl_sawparens(pTHX_ OP *o) |
79072805 | 1859 | { |
96a5add6 | 1860 | PERL_UNUSED_CONTEXT; |
79072805 LW |
1861 | if (o) |
1862 | o->op_flags |= OPf_PARENS; | |
1863 | return o; | |
1864 | } | |
1865 | ||
1866 | OP * | |
864dbfa3 | 1867 | Perl_bind_match(pTHX_ I32 type, OP *left, OP *right) |
79072805 | 1868 | { |
11343788 | 1869 | OP *o; |
59f00321 | 1870 | bool ismatchop = 0; |
1496a290 AL |
1871 | const OPCODE ltype = left->op_type; |
1872 | const OPCODE rtype = right->op_type; | |
79072805 | 1873 | |
1496a290 AL |
1874 | if ( (ltype == OP_RV2AV || ltype == OP_RV2HV || ltype == OP_PADAV |
1875 | || ltype == OP_PADHV) && ckWARN(WARN_MISC)) | |
041457d9 | 1876 | { |
1496a290 AL |
1877 | const char * const desc |
1878 | = PL_op_desc[(rtype == OP_SUBST || rtype == OP_TRANS) | |
1879 | ? rtype : OP_MATCH]; | |
1880 | const char * const sample = ((ltype == OP_RV2AV || ltype == OP_PADAV) | |
1881 | ? "@array" : "%hash"); | |
9014280d | 1882 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
1c846c1f | 1883 | "Applying %s to %s will act on scalar(%s)", |
599cee73 | 1884 | desc, sample, sample); |
2ae324a7 | 1885 | } |
1886 | ||
1496a290 | 1887 | if (rtype == OP_CONST && |
5cc9e5c9 RH |
1888 | cSVOPx(right)->op_private & OPpCONST_BARE && |
1889 | cSVOPx(right)->op_private & OPpCONST_STRICT) | |
1890 | { | |
1891 | no_bareword_allowed(right); | |
1892 | } | |
1893 | ||
1496a290 AL |
1894 | ismatchop = rtype == OP_MATCH || |
1895 | rtype == OP_SUBST || | |
1896 | rtype == OP_TRANS; | |
59f00321 RGS |
1897 | if (ismatchop && right->op_private & OPpTARGET_MY) { |
1898 | right->op_targ = 0; | |
1899 | right->op_private &= ~OPpTARGET_MY; | |
1900 | } | |
1901 | if (!(right->op_flags & OPf_STACKED) && ismatchop) { | |
1496a290 AL |
1902 | OP *newleft; |
1903 | ||
79072805 | 1904 | right->op_flags |= OPf_STACKED; |
1496a290 AL |
1905 | if (rtype != OP_MATCH && |
1906 | ! (rtype == OP_TRANS && | |
6fbb66d6 | 1907 | right->op_private & OPpTRANS_IDENTICAL)) |
1496a290 AL |
1908 | newleft = mod(left, rtype); |
1909 | else | |
1910 | newleft = left; | |
79072805 | 1911 | if (right->op_type == OP_TRANS) |
1496a290 | 1912 | o = newBINOP(OP_NULL, OPf_STACKED, scalar(newleft), right); |
79072805 | 1913 | else |
1496a290 | 1914 | o = prepend_elem(rtype, scalar(newleft), right); |
79072805 | 1915 | if (type == OP_NOT) |
11343788 MB |
1916 | return newUNOP(OP_NOT, 0, scalar(o)); |
1917 | return o; | |
79072805 LW |
1918 | } |
1919 | else | |
1920 | return bind_match(type, left, | |
131b3ad0 | 1921 | pmruntime(newPMOP(OP_MATCH, 0), right, 0)); |
79072805 LW |
1922 | } |
1923 | ||
1924 | OP * | |
864dbfa3 | 1925 | Perl_invert(pTHX_ OP *o) |
79072805 | 1926 | { |
11343788 | 1927 | if (!o) |
1d866c12 | 1928 | return NULL; |
11343788 | 1929 | return newUNOP(OP_NOT, OPf_SPECIAL, scalar(o)); |
79072805 LW |
1930 | } |
1931 | ||
1932 | OP * | |
864dbfa3 | 1933 | Perl_scope(pTHX_ OP *o) |
79072805 | 1934 | { |
27da23d5 | 1935 | dVAR; |
79072805 | 1936 | if (o) { |
3280af22 | 1937 | if (o->op_flags & OPf_PARENS || PERLDB_NOOPT || PL_tainting) { |
463ee0b2 LW |
1938 | o = prepend_elem(OP_LINESEQ, newOP(OP_ENTER, 0), o); |
1939 | o->op_type = OP_LEAVE; | |
22c35a8c | 1940 | o->op_ppaddr = PL_ppaddr[OP_LEAVE]; |
463ee0b2 | 1941 | } |
fdb22418 HS |
1942 | else if (o->op_type == OP_LINESEQ) { |
1943 | OP *kid; | |
1944 | o->op_type = OP_SCOPE; | |
1945 | o->op_ppaddr = PL_ppaddr[OP_SCOPE]; | |
1946 | kid = ((LISTOP*)o)->op_first; | |
59110972 | 1947 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) { |
fdb22418 | 1948 | op_null(kid); |
59110972 RH |
1949 | |
1950 | /* The following deals with things like 'do {1 for 1}' */ | |
1951 | kid = kid->op_sibling; | |
1952 | if (kid && | |
1953 | (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE)) | |
1954 | op_null(kid); | |
1955 | } | |
463ee0b2 | 1956 | } |
fdb22418 | 1957 | else |
5f66b61c | 1958 | o = newLISTOP(OP_SCOPE, 0, o, NULL); |
79072805 LW |
1959 | } |
1960 | return o; | |
1961 | } | |
72dc9ed5 | 1962 | |
a0d0e21e | 1963 | int |
864dbfa3 | 1964 | Perl_block_start(pTHX_ int full) |
79072805 | 1965 | { |
97aff369 | 1966 | dVAR; |
73d840c0 | 1967 | const int retval = PL_savestack_ix; |
dd2155a4 | 1968 | pad_block_start(full); |
b3ac6de7 | 1969 | SAVEHINTS(); |
3280af22 | 1970 | PL_hints &= ~HINT_BLOCK_SCOPE; |
68da3b2f | 1971 | SAVECOMPILEWARNINGS(); |
72dc9ed5 | 1972 | PL_compiling.cop_warnings = DUP_WARNINGS(PL_compiling.cop_warnings); |
a0d0e21e LW |
1973 | return retval; |
1974 | } | |
1975 | ||
1976 | OP* | |
864dbfa3 | 1977 | Perl_block_end(pTHX_ I32 floor, OP *seq) |
a0d0e21e | 1978 | { |
97aff369 | 1979 | dVAR; |
6867be6d | 1980 | const int needblockscope = PL_hints & HINT_BLOCK_SCOPE; |
551405c4 | 1981 | OP* const retval = scalarseq(seq); |
e9818f4e | 1982 | LEAVE_SCOPE(floor); |
623e6609 | 1983 | CopHINTS_set(&PL_compiling, PL_hints); |
a0d0e21e | 1984 | if (needblockscope) |
3280af22 | 1985 | PL_hints |= HINT_BLOCK_SCOPE; /* propagate out */ |
dd2155a4 | 1986 | pad_leavemy(); |
a0d0e21e LW |
1987 | return retval; |
1988 | } | |
1989 | ||
76e3520e | 1990 | STATIC OP * |
cea2e8a9 | 1991 | S_newDEFSVOP(pTHX) |
54b9620d | 1992 | { |
97aff369 | 1993 | dVAR; |
9f7d9405 | 1994 | const PADOFFSET offset = pad_findmy("$_"); |
00b1698f | 1995 | if (offset == NOT_IN_PAD || PAD_COMPNAME_FLAGS_isOUR(offset)) { |
59f00321 RGS |
1996 | return newSVREF(newGVOP(OP_GV, 0, PL_defgv)); |
1997 | } | |
1998 | else { | |
551405c4 | 1999 | OP * const o = newOP(OP_PADSV, 0); |
59f00321 RGS |
2000 | o->op_targ = offset; |
2001 | return o; | |
2002 | } | |
54b9620d MB |
2003 | } |
2004 | ||
a0d0e21e | 2005 | void |
864dbfa3 | 2006 | Perl_newPROG(pTHX_ OP *o) |
a0d0e21e | 2007 | { |
97aff369 | 2008 | dVAR; |
3280af22 | 2009 | if (PL_in_eval) { |
b295d113 TH |
2010 | if (PL_eval_root) |
2011 | return; | |
faef0170 HS |
2012 | PL_eval_root = newUNOP(OP_LEAVEEVAL, |
2013 | ((PL_in_eval & EVAL_KEEPERR) | |
2014 | ? OPf_SPECIAL : 0), o); | |
3280af22 | 2015 | PL_eval_start = linklist(PL_eval_root); |
7934575e GS |
2016 | PL_eval_root->op_private |= OPpREFCOUNTED; |
2017 | OpREFCNT_set(PL_eval_root, 1); | |
3280af22 | 2018 | PL_eval_root->op_next = 0; |
a2efc822 | 2019 | CALL_PEEP(PL_eval_start); |
a0d0e21e LW |
2020 | } |
2021 | else { | |
6be89cf9 AE |
2022 | if (o->op_type == OP_STUB) { |
2023 | PL_comppad_name = 0; | |
2024 | PL_compcv = 0; | |
2a4f803a | 2025 | FreeOp(o); |
a0d0e21e | 2026 | return; |
6be89cf9 | 2027 | } |
3280af22 NIS |
2028 | PL_main_root = scope(sawparens(scalarvoid(o))); |
2029 | PL_curcop = &PL_compiling; | |
2030 | PL_main_start = LINKLIST(PL_main_root); | |
7934575e GS |
2031 | PL_main_root->op_private |= OPpREFCOUNTED; |
2032 | OpREFCNT_set(PL_main_root, 1); | |
3280af22 | 2033 | PL_main_root->op_next = 0; |
a2efc822 | 2034 | CALL_PEEP(PL_main_start); |
3280af22 | 2035 | PL_compcv = 0; |
3841441e | 2036 | |
4fdae800 | 2037 | /* Register with debugger */ |
84902520 | 2038 | if (PERLDB_INTER) { |
551405c4 | 2039 | CV * const cv = get_cv("DB::postponed", FALSE); |
3841441e CS |
2040 | if (cv) { |
2041 | dSP; | |
924508f0 | 2042 | PUSHMARK(SP); |
cc49e20b | 2043 | XPUSHs((SV*)CopFILEGV(&PL_compiling)); |
3841441e | 2044 | PUTBACK; |
864dbfa3 | 2045 | call_sv((SV*)cv, G_DISCARD); |
3841441e CS |
2046 | } |
2047 | } | |
79072805 | 2048 | } |
79072805 LW |
2049 | } |
2050 | ||
2051 | OP * | |
864dbfa3 | 2052 | Perl_localize(pTHX_ OP *o, I32 lex) |
79072805 | 2053 | { |
97aff369 | 2054 | dVAR; |
79072805 | 2055 | if (o->op_flags & OPf_PARENS) |
d2be0de5 YST |
2056 | /* [perl #17376]: this appears to be premature, and results in code such as |
2057 | C< our(%x); > executing in list mode rather than void mode */ | |
2058 | #if 0 | |
79072805 | 2059 | list(o); |
d2be0de5 | 2060 | #else |
6f207bd3 | 2061 | NOOP; |
d2be0de5 | 2062 | #endif |
8990e307 | 2063 | else { |
041457d9 DM |
2064 | if ( PL_bufptr > PL_oldbufptr && PL_bufptr[-1] == ',' |
2065 | && ckWARN(WARN_PARENTHESIS)) | |
64420d0d JH |
2066 | { |
2067 | char *s = PL_bufptr; | |
bac662ee | 2068 | bool sigil = FALSE; |
64420d0d | 2069 | |
8473848f | 2070 | /* some heuristics to detect a potential error */ |
bac662ee | 2071 | while (*s && (strchr(", \t\n", *s))) |
64420d0d | 2072 | s++; |
8473848f | 2073 | |
bac662ee TS |
2074 | while (1) { |
2075 | if (*s && strchr("@$%*", *s) && *++s | |
2076 | && (isALNUM(*s) || UTF8_IS_CONTINUED(*s))) { | |
2077 | s++; | |
2078 | sigil = TRUE; | |
2079 | while (*s && (isALNUM(*s) || UTF8_IS_CONTINUED(*s))) | |
2080 | s++; | |
2081 | while (*s && (strchr(", \t\n", *s))) | |
2082 | s++; | |
2083 | } | |
2084 | else | |
2085 | break; | |
2086 | } | |
2087 | if (sigil && (*s == ';' || *s == '=')) { | |
2088 | Perl_warner(aTHX_ packWARN(WARN_PARENTHESIS), | |
8473848f | 2089 | "Parentheses missing around \"%s\" list", |
952306ac | 2090 | lex ? (PL_in_my == KEY_our ? "our" : PL_in_my == KEY_state ? "state" : "my") |
8473848f RGS |
2091 | : "local"); |
2092 | } | |
8990e307 LW |
2093 | } |
2094 | } | |
93a17b20 | 2095 | if (lex) |
eb64745e | 2096 | o = my(o); |
93a17b20 | 2097 | else |
eb64745e GS |
2098 | o = mod(o, OP_NULL); /* a bit kludgey */ |
2099 | PL_in_my = FALSE; | |
5c284bb0 | 2100 | PL_in_my_stash = NULL; |
eb64745e | 2101 | return o; |
79072805 LW |
2102 | } |
2103 | ||
2104 | OP * | |
864dbfa3 | 2105 | Perl_jmaybe(pTHX_ OP *o) |
79072805 LW |
2106 | { |
2107 | if (o->op_type == OP_LIST) { | |
fafc274c | 2108 | OP * const o2 |
d4c19fe8 | 2109 | = newSVREF(newGVOP(OP_GV, 0, gv_fetchpvs(";", GV_ADD|GV_NOTQUAL, SVt_PV))); |
554b3eca | 2110 | o = convert(OP_JOIN, 0, prepend_elem(OP_LIST, o2, o)); |
79072805 LW |
2111 | } |
2112 | return o; | |
2113 | } | |
2114 | ||
2115 | OP * | |
864dbfa3 | 2116 | Perl_fold_constants(pTHX_ register OP *o) |
79072805 | 2117 | { |
27da23d5 | 2118 | dVAR; |
79072805 | 2119 | register OP *curop; |
eb8433b7 | 2120 | OP *newop; |
6148ee25 | 2121 | volatile I32 type = o->op_type; |
de5e01c2 | 2122 | SV *sv = NULL; |
b7f7fd0b NC |
2123 | int ret = 0; |
2124 | I32 oldscope; | |
2125 | OP *old_next; | |
5f2d9966 DM |
2126 | SV * const oldwarnhook = PL_warnhook; |
2127 | SV * const olddiehook = PL_diehook; | |
b7f7fd0b | 2128 | dJMPENV; |
79072805 | 2129 | |
22c35a8c | 2130 | if (PL_opargs[type] & OA_RETSCALAR) |
79072805 | 2131 | scalar(o); |
b162f9ea | 2132 | if (PL_opargs[type] & OA_TARGET && !o->op_targ) |
ed6116ce | 2133 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 | 2134 | |
eac055e9 GS |
2135 | /* integerize op, unless it happens to be C<-foo>. |
2136 | * XXX should pp_i_negate() do magic string negation instead? */ | |
2137 | if ((PL_opargs[type] & OA_OTHERINT) && (PL_hints & HINT_INTEGER) | |
2138 | && !(type == OP_NEGATE && cUNOPo->op_first->op_type == OP_CONST | |
2139 | && (cUNOPo->op_first->op_private & OPpCONST_BARE))) | |
2140 | { | |
22c35a8c | 2141 | o->op_ppaddr = PL_ppaddr[type = ++(o->op_type)]; |
eac055e9 | 2142 | } |
85e6fe83 | 2143 | |
22c35a8c | 2144 | if (!(PL_opargs[type] & OA_FOLDCONST)) |
79072805 LW |
2145 | goto nope; |
2146 | ||
de939608 | 2147 | switch (type) { |
7a52d87a GS |
2148 | case OP_NEGATE: |
2149 | /* XXX might want a ck_negate() for this */ | |
2150 | cUNOPo->op_first->op_private &= ~OPpCONST_STRICT; | |
2151 | break; | |
de939608 CS |
2152 | case OP_UCFIRST: |
2153 | case OP_LCFIRST: | |
2154 | case OP_UC: | |
2155 | case OP_LC: | |
69dcf70c MB |
2156 | case OP_SLT: |
2157 | case OP_SGT: | |
2158 | case OP_SLE: | |
2159 | case OP_SGE: | |
2160 | case OP_SCMP: | |
2de3dbcc JH |
2161 | /* XXX what about the numeric ops? */ |
2162 | if (PL_hints & HINT_LOCALE) | |
de939608 CS |
2163 | goto nope; |
2164 | } | |
2165 | ||
3280af22 | 2166 | if (PL_error_count) |
a0d0e21e LW |
2167 | goto nope; /* Don't try to run w/ errors */ |
2168 | ||
79072805 | 2169 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
1496a290 AL |
2170 | const OPCODE type = curop->op_type; |
2171 | if ((type != OP_CONST || (curop->op_private & OPpCONST_BARE)) && | |
2172 | type != OP_LIST && | |
2173 | type != OP_SCALAR && | |
2174 | type != OP_NULL && | |
2175 | type != OP_PUSHMARK) | |
7a52d87a | 2176 | { |
79072805 LW |
2177 | goto nope; |
2178 | } | |
2179 | } | |
2180 | ||
2181 | curop = LINKLIST(o); | |
b7f7fd0b | 2182 | old_next = o->op_next; |
79072805 | 2183 | o->op_next = 0; |
533c011a | 2184 | PL_op = curop; |
b7f7fd0b NC |
2185 | |
2186 | oldscope = PL_scopestack_ix; | |
edb2152a | 2187 | create_eval_scope(G_FAKINGEVAL); |
b7f7fd0b | 2188 | |
5f2d9966 DM |
2189 | PL_warnhook = PERL_WARNHOOK_FATAL; |
2190 | PL_diehook = NULL; | |
b7f7fd0b NC |
2191 | JMPENV_PUSH(ret); |
2192 | ||
2193 | switch (ret) { | |
2194 | case 0: | |
2195 | CALLRUNOPS(aTHX); | |
2196 | sv = *(PL_stack_sp--); | |
2197 | if (o->op_targ && sv == PAD_SV(o->op_targ)) /* grab pad temp? */ | |
2198 | pad_swipe(o->op_targ, FALSE); | |
2199 | else if (SvTEMP(sv)) { /* grab mortal temp? */ | |
2200 | SvREFCNT_inc_simple_void(sv); | |
2201 | SvTEMP_off(sv); | |
2202 | } | |
2203 | break; | |
2204 | case 3: | |
2205 | /* Something tried to die. Abandon constant folding. */ | |
2206 | /* Pretend the error never happened. */ | |
2207 | sv_setpvn(ERRSV,"",0); | |
2208 | o->op_next = old_next; | |
2209 | break; | |
2210 | default: | |
2211 | JMPENV_POP; | |
5f2d9966 DM |
2212 | /* Don't expect 1 (setjmp failed) or 2 (something called my_exit) */ |
2213 | PL_warnhook = oldwarnhook; | |
2214 | PL_diehook = olddiehook; | |
2215 | /* XXX note that this croak may fail as we've already blown away | |
2216 | * the stack - eg any nested evals */ | |
b7f7fd0b NC |
2217 | Perl_croak(aTHX_ "panic: fold_constants JMPENV_PUSH returned %d", ret); |
2218 | } | |
b7f7fd0b | 2219 | JMPENV_POP; |
5f2d9966 DM |
2220 | PL_warnhook = oldwarnhook; |
2221 | PL_diehook = olddiehook; | |
edb2152a NC |
2222 | |
2223 | if (PL_scopestack_ix > oldscope) | |
2224 | delete_eval_scope(); | |
eb8433b7 | 2225 | |
b7f7fd0b NC |
2226 | if (ret) |
2227 | goto nope; | |
2228 | ||
eb8433b7 | 2229 | #ifndef PERL_MAD |
79072805 | 2230 | op_free(o); |
eb8433b7 | 2231 | #endif |
de5e01c2 | 2232 | assert(sv); |
79072805 | 2233 | if (type == OP_RV2GV) |
eb8433b7 NC |
2234 | newop = newGVOP(OP_GV, 0, (GV*)sv); |
2235 | else | |
2236 | newop = newSVOP(OP_CONST, 0, sv); | |
2237 | op_getmad(o,newop,'f'); | |
2238 | return newop; | |
aeea060c | 2239 | |
b7f7fd0b | 2240 | nope: |
79072805 LW |
2241 | return o; |
2242 | } | |
2243 | ||
2244 | OP * | |
864dbfa3 | 2245 | Perl_gen_constant_list(pTHX_ register OP *o) |
79072805 | 2246 | { |
27da23d5 | 2247 | dVAR; |
79072805 | 2248 | register OP *curop; |
6867be6d | 2249 | const I32 oldtmps_floor = PL_tmps_floor; |
79072805 | 2250 | |
a0d0e21e | 2251 | list(o); |
3280af22 | 2252 | if (PL_error_count) |
a0d0e21e LW |
2253 | return o; /* Don't attempt to run with errors */ |
2254 | ||
533c011a | 2255 | PL_op = curop = LINKLIST(o); |
a0d0e21e | 2256 | o->op_next = 0; |
a2efc822 | 2257 | CALL_PEEP(curop); |
cea2e8a9 GS |
2258 | pp_pushmark(); |
2259 | CALLRUNOPS(aTHX); | |
533c011a | 2260 | PL_op = curop; |
cea2e8a9 | 2261 | pp_anonlist(); |
3280af22 | 2262 | PL_tmps_floor = oldtmps_floor; |
79072805 LW |
2263 | |
2264 | o->op_type = OP_RV2AV; | |
22c35a8c | 2265 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
fb53bbb2 SG |
2266 | o->op_flags &= ~OPf_REF; /* treat \(1..2) like an ordinary list */ |
2267 | o->op_flags |= OPf_PARENS; /* and flatten \(1..2,3) */ | |
2814eb74 | 2268 | o->op_opt = 0; /* needs to be revisited in peep() */ |
79072805 | 2269 | curop = ((UNOP*)o)->op_first; |
b37c2d43 | 2270 | ((UNOP*)o)->op_first = newSVOP(OP_CONST, 0, SvREFCNT_inc_NN(*PL_stack_sp--)); |
eb8433b7 NC |
2271 | #ifdef PERL_MAD |
2272 | op_getmad(curop,o,'O'); | |
2273 | #else | |
79072805 | 2274 | op_free(curop); |
eb8433b7 | 2275 | #endif |
79072805 LW |
2276 | linklist(o); |
2277 | return list(o); | |
2278 | } | |
2279 | ||
2280 | OP * | |
864dbfa3 | 2281 | Perl_convert(pTHX_ I32 type, I32 flags, OP *o) |
79072805 | 2282 | { |
27da23d5 | 2283 | dVAR; |
11343788 | 2284 | if (!o || o->op_type != OP_LIST) |
5f66b61c | 2285 | o = newLISTOP(OP_LIST, 0, o, NULL); |
748a9306 | 2286 | else |
5dc0d613 | 2287 | o->op_flags &= ~OPf_WANT; |
79072805 | 2288 | |
22c35a8c | 2289 | if (!(PL_opargs[type] & OA_MARK)) |
93c66552 | 2290 | op_null(cLISTOPo->op_first); |
8990e307 | 2291 | |
eb160463 | 2292 | o->op_type = (OPCODE)type; |
22c35a8c | 2293 | o->op_ppaddr = PL_ppaddr[type]; |
11343788 | 2294 | o->op_flags |= flags; |
79072805 | 2295 | |
11343788 | 2296 | o = CHECKOP(type, o); |
fe2774ed | 2297 | if (o->op_type != (unsigned)type) |
11343788 | 2298 | return o; |
79072805 | 2299 | |
11343788 | 2300 | return fold_constants(o); |
79072805 LW |
2301 | } |
2302 | ||
2303 | /* List constructors */ | |
2304 | ||
2305 | OP * | |
864dbfa3 | 2306 | Perl_append_elem(pTHX_ I32 type, OP *first, OP *last) |
79072805 LW |
2307 | { |
2308 | if (!first) | |
2309 | return last; | |
8990e307 LW |
2310 | |
2311 | if (!last) | |
79072805 | 2312 | return first; |
8990e307 | 2313 | |
fe2774ed | 2314 | if (first->op_type != (unsigned)type |
155aba94 GS |
2315 | || (type == OP_LIST && (first->op_flags & OPf_PARENS))) |
2316 | { | |
2317 | return newLISTOP(type, 0, first, last); | |
2318 | } | |
79072805 | 2319 | |
a0d0e21e LW |
2320 | if (first->op_flags & OPf_KIDS) |
2321 | ((LISTOP*)first)->op_last->op_sibling = last; | |
2322 | else { | |
2323 | first->op_flags |= OPf_KIDS; | |
2324 | ((LISTOP*)first)->op_first = last; | |
2325 | } | |
2326 | ((LISTOP*)first)->op_last = last; | |
a0d0e21e | 2327 | return first; |
79072805 LW |
2328 | } |
2329 | ||
2330 | OP * | |
864dbfa3 | 2331 | Perl_append_list(pTHX_ I32 type, LISTOP *first, LISTOP *last) |
79072805 LW |
2332 | { |
2333 | if (!first) | |
2334 | return (OP*)last; | |
8990e307 LW |
2335 | |
2336 | if (!last) | |
79072805 | 2337 | return (OP*)first; |
8990e307 | 2338 | |
fe2774ed | 2339 | if (first->op_type != (unsigned)type) |
79072805 | 2340 | return prepend_elem(type, (OP*)first, (OP*)last); |
8990e307 | 2341 | |
fe2774ed | 2342 | if (last->op_type != (unsigned)type) |
79072805 LW |
2343 | return append_elem(type, (OP*)first, (OP*)last); |
2344 | ||
2345 | first->op_last->op_sibling = last->op_first; | |
2346 | first->op_last = last->op_last; | |
117dada2 | 2347 | first->op_flags |= (last->op_flags & OPf_KIDS); |
1c846c1f | 2348 | |
eb8433b7 NC |
2349 | #ifdef PERL_MAD |
2350 | if (last->op_first && first->op_madprop) { | |
2351 | MADPROP *mp = last->op_first->op_madprop; | |
2352 | if (mp) { | |
2353 | while (mp->mad_next) | |
2354 | mp = mp->mad_next; | |
2355 | mp->mad_next = first->op_madprop; | |
2356 | } | |
2357 | else { | |
2358 | last->op_first->op_madprop = first->op_madprop; | |
2359 | } | |
2360 | } | |
2361 | first->op_madprop = last->op_madprop; | |
2362 | last->op_madprop = 0; | |
2363 | #endif | |
2364 | ||
238a4c30 NIS |
2365 | FreeOp(last); |
2366 | ||
79072805 LW |
2367 | return (OP*)first; |
2368 | } | |
2369 | ||
2370 | OP * | |
864dbfa3 | 2371 | Perl_prepend_elem(pTHX_ I32 type, OP *first, OP *last) |
79072805 LW |
2372 | { |
2373 | if (!first) | |
2374 | return last; | |
8990e307 LW |
2375 | |
2376 | if (!last) | |
79072805 | 2377 | return first; |
8990e307 | 2378 | |
fe2774ed | 2379 | if (last->op_type == (unsigned)type) { |
8990e307 LW |
2380 | if (type == OP_LIST) { /* already a PUSHMARK there */ |
2381 | first->op_sibling = ((LISTOP*)last)->op_first->op_sibling; | |
2382 | ((LISTOP*)last)->op_first->op_sibling = first; | |
36a5d4ba DC |
2383 | if (!(first->op_flags & OPf_PARENS)) |
2384 | last->op_flags &= ~OPf_PARENS; | |
8990e307 LW |
2385 | } |
2386 | else { | |
2387 | if (!(last->op_flags & OPf_KIDS)) { | |
2388 | ((LISTOP*)last)->op_last = first; | |
2389 | last->op_flags |= OPf_KIDS; | |
2390 | } | |
2391 | first->op_sibling = ((LISTOP*)last)->op_first; | |
2392 | ((LISTOP*)last)->op_first = first; | |
79072805 | 2393 | } |
117dada2 | 2394 | last->op_flags |= OPf_KIDS; |
79072805 LW |
2395 | return last; |
2396 | } | |
2397 | ||
2398 | return newLISTOP(type, 0, first, last); | |
2399 | } | |
2400 | ||
2401 | /* Constructors */ | |
2402 | ||
eb8433b7 NC |
2403 | #ifdef PERL_MAD |
2404 | ||
2405 | TOKEN * | |
2406 | Perl_newTOKEN(pTHX_ I32 optype, YYSTYPE lval, MADPROP* madprop) | |
2407 | { | |
2408 | TOKEN *tk; | |
99129197 | 2409 | Newxz(tk, 1, TOKEN); |
eb8433b7 NC |
2410 | tk->tk_type = (OPCODE)optype; |
2411 | tk->tk_type = 12345; | |
2412 | tk->tk_lval = lval; | |
2413 | tk->tk_mad = madprop; | |
2414 | return tk; | |
2415 | } | |
2416 | ||
2417 | void | |
2418 | Perl_token_free(pTHX_ TOKEN* tk) | |
2419 | { | |
2420 | if (tk->tk_type != 12345) | |
2421 | return; | |
2422 | mad_free(tk->tk_mad); | |
2423 | Safefree(tk); | |
2424 | } | |
2425 | ||
2426 | void | |
2427 | Perl_token_getmad(pTHX_ TOKEN* tk, OP* o, char slot) | |
2428 | { | |
2429 | MADPROP* mp; | |
2430 | MADPROP* tm; | |
2431 | if (tk->tk_type != 12345) { | |
2432 | Perl_warner(aTHX_ packWARN(WARN_MISC), | |
2433 | "Invalid TOKEN object ignored"); | |
2434 | return; | |
2435 | } | |
2436 | tm = tk->tk_mad; | |
2437 | if (!tm) | |
2438 | return; | |
2439 | ||
2440 | /* faked up qw list? */ | |
2441 | if (slot == '(' && | |
2442 | tm->mad_type == MAD_SV && | |
2443 | SvPVX((SV*)tm->mad_val)[0] == 'q') | |
2444 | slot = 'x'; | |
2445 | ||
2446 | if (o) { | |
2447 | mp = o->op_madprop; | |
2448 | if (mp) { | |
2449 | for (;;) { | |
2450 | /* pretend constant fold didn't happen? */ | |
2451 | if (mp->mad_key == 'f' && | |
2452 | (o->op_type == OP_CONST || | |
2453 | o->op_type == OP_GV) ) | |
2454 | { | |
2455 | token_getmad(tk,(OP*)mp->mad_val,slot); | |
2456 | return; | |
2457 | } | |
2458 | if (!mp->mad_next) | |
2459 | break; | |
2460 | mp = mp->mad_next; | |
2461 | } | |
2462 | mp->mad_next = tm; | |
2463 | mp = mp->mad_next; | |
2464 | } | |
2465 | else { | |
2466 | o->op_madprop = tm; | |
2467 | mp = o->op_madprop; | |
2468 | } | |
2469 | if (mp->mad_key == 'X') | |
2470 | mp->mad_key = slot; /* just change the first one */ | |
2471 | ||
2472 | tk->tk_mad = 0; | |
2473 | } | |
2474 | else | |
2475 | mad_free(tm); | |
2476 | Safefree(tk); | |
2477 | } | |
2478 | ||
2479 | void | |
2480 | Perl_op_getmad_weak(pTHX_ OP* from, OP* o, char slot) | |
2481 | { | |
2482 | MADPROP* mp; | |
2483 | if (!from) | |
2484 | return; | |
2485 | if (o) { | |
2486 | mp = o->op_madprop; | |
2487 | if (mp) { | |
2488 | for (;;) { | |
2489 | /* pretend constant fold didn't happen? */ | |
2490 | if (mp->mad_key == 'f' && | |
2491 | (o->op_type == OP_CONST || | |
2492 | o->op_type == OP_GV) ) | |
2493 | { | |
2494 | op_getmad(from,(OP*)mp->mad_val,slot); | |
2495 | return; | |
2496 | } | |
2497 | if (!mp->mad_next) | |
2498 | break; | |
2499 | mp = mp->mad_next; | |
2500 | } | |
2501 | mp->mad_next = newMADPROP(slot,MAD_OP,from,0); | |
2502 | } | |
2503 | else { | |
2504 | o->op_madprop = newMADPROP(slot,MAD_OP,from,0); | |
2505 | } | |
2506 | } | |
2507 | } | |
2508 | ||
2509 | void | |
2510 | Perl_op_getmad(pTHX_ OP* from, OP* o, char slot) | |
2511 | { | |
2512 | MADPROP* mp; | |
2513 | if (!from) | |
2514 | return; | |
2515 | if (o) { | |
2516 | mp = o->op_madprop; | |
2517 | if (mp) { | |
2518 | for (;;) { | |
2519 | /* pretend constant fold didn't happen? */ | |
2520 | if (mp->mad_key == 'f' && | |
2521 | (o->op_type == OP_CONST || | |
2522 | o->op_type == OP_GV) ) | |
2523 | { | |
2524 | op_getmad(from,(OP*)mp->mad_val,slot); | |
2525 | return; | |
2526 | } | |
2527 | if (!mp->mad_next) | |
2528 | break; | |
2529 | mp = mp->mad_next; | |
2530 | } | |
2531 | mp->mad_next = newMADPROP(slot,MAD_OP,from,1); | |
2532 | } | |
2533 | else { | |
2534 | o->op_madprop = newMADPROP(slot,MAD_OP,from,1); | |
2535 | } | |
2536 | } | |
2537 | else { | |
99129197 NC |
2538 | PerlIO_printf(PerlIO_stderr(), |
2539 | "DESTROYING op = %0"UVxf"\n", PTR2UV(from)); | |
eb8433b7 NC |
2540 | op_free(from); |
2541 | } | |
2542 | } | |
2543 | ||
2544 | void | |
2545 | Perl_prepend_madprops(pTHX_ MADPROP* mp, OP* o, char slot) | |
2546 | { | |
2547 | MADPROP* tm; | |
2548 | if (!mp || !o) | |
2549 | return; | |
2550 | if (slot) | |
2551 | mp->mad_key = slot; | |
2552 | tm = o->op_madprop; | |
2553 | o->op_madprop = mp; | |
2554 | for (;;) { | |
2555 | if (!mp->mad_next) | |
2556 | break; | |
2557 | mp = mp->mad_next; | |
2558 | } | |
2559 | mp->mad_next = tm; | |
2560 | } | |
2561 | ||
2562 | void | |
2563 | Perl_append_madprops(pTHX_ MADPROP* tm, OP* o, char slot) | |
2564 | { | |
2565 | if (!o) | |
2566 | return; | |
2567 | addmad(tm, &(o->op_madprop), slot); | |
2568 | } | |
2569 | ||
2570 | void | |
2571 | Perl_addmad(pTHX_ MADPROP* tm, MADPROP** root, char slot) | |
2572 | { | |
2573 | MADPROP* mp; | |
2574 | if (!tm || !root) | |
2575 | return; | |
2576 | if (slot) | |
2577 | tm->mad_key = slot; | |
2578 | mp = *root; | |
2579 | if (!mp) { | |
2580 | *root = tm; | |
2581 | return; | |
2582 | } | |
2583 | for (;;) { | |
2584 | if (!mp->mad_next) | |
2585 | break; | |
2586 | mp = mp->mad_next; | |
2587 | } | |
2588 | mp->mad_next = tm; | |
2589 | } | |
2590 | ||
2591 | MADPROP * | |
2592 | Perl_newMADsv(pTHX_ char key, SV* sv) | |
2593 | { | |
2594 | return newMADPROP(key, MAD_SV, sv, 0); | |
2595 | } | |
2596 | ||
2597 | MADPROP * | |
2598 | Perl_newMADPROP(pTHX_ char key, char type, void* val, I32 vlen) | |
2599 | { | |
2600 | MADPROP *mp; | |
99129197 | 2601 | Newxz(mp, 1, MADPROP); |
eb8433b7 NC |
2602 | mp->mad_next = 0; |
2603 | mp->mad_key = key; | |
2604 | mp->mad_vlen = vlen; | |
2605 | mp->mad_type = type; | |
2606 | mp->mad_val = val; | |
2607 | /* PerlIO_printf(PerlIO_stderr(), "NEW mp = %0x\n", mp); */ | |
2608 | return mp; | |
2609 | } | |
2610 | ||
2611 | void | |
2612 | Perl_mad_free(pTHX_ MADPROP* mp) | |
2613 | { | |
2614 | /* PerlIO_printf(PerlIO_stderr(), "FREE mp = %0x\n", mp); */ | |
2615 | if (!mp) | |
2616 | return; | |
2617 | if (mp->mad_next) | |
2618 | mad_free(mp->mad_next); | |
2619 | /* if (PL_lex_state != LEX_NOTPARSING && mp->mad_vlen) | |
2620 | PerlIO_printf(PerlIO_stderr(), "DESTROYING '%c'=<%s>\n", mp->mad_key & 255, mp->mad_val); */ | |
2621 | switch (mp->mad_type) { | |
2622 | case MAD_NULL: | |
2623 | break; | |
2624 | case MAD_PV: | |
2625 | Safefree((char*)mp->mad_val); | |
2626 | break; | |
2627 | case MAD_OP: | |
2628 | if (mp->mad_vlen) /* vlen holds "strong/weak" boolean */ | |
2629 | op_free((OP*)mp->mad_val); | |
2630 | break; | |
2631 | case MAD_SV: | |
2632 | sv_free((SV*)mp->mad_val); | |
2633 | break; | |
2634 | default: | |
2635 | PerlIO_printf(PerlIO_stderr(), "Unrecognized mad\n"); | |
2636 | break; | |
2637 | } | |
2638 | Safefree(mp); | |
2639 | } | |
2640 | ||
2641 | #endif | |
2642 | ||
79072805 | 2643 | OP * |
864dbfa3 | 2644 | Perl_newNULLLIST(pTHX) |
79072805 | 2645 | { |
8990e307 LW |
2646 | return newOP(OP_STUB, 0); |
2647 | } | |
2648 | ||
2649 | OP * | |
864dbfa3 | 2650 | Perl_force_list(pTHX_ OP *o) |
8990e307 | 2651 | { |
11343788 | 2652 | if (!o || o->op_type != OP_LIST) |
5f66b61c | 2653 | o = newLISTOP(OP_LIST, 0, o, NULL); |
93c66552 | 2654 | op_null(o); |
11343788 | 2655 | return o; |
79072805 LW |
2656 | } |
2657 | ||
2658 | OP * | |
864dbfa3 | 2659 | Perl_newLISTOP(pTHX_ I32 type, I32 flags, OP *first, OP *last) |
79072805 | 2660 | { |
27da23d5 | 2661 | dVAR; |
79072805 LW |
2662 | LISTOP *listop; |
2663 | ||
b7dc083c | 2664 | NewOp(1101, listop, 1, LISTOP); |
79072805 | 2665 | |
eb160463 | 2666 | listop->op_type = (OPCODE)type; |
22c35a8c | 2667 | listop->op_ppaddr = PL_ppaddr[type]; |
117dada2 SM |
2668 | if (first || last) |
2669 | flags |= OPf_KIDS; | |
eb160463 | 2670 | listop->op_flags = (U8)flags; |
79072805 LW |
2671 | |
2672 | if (!last && first) | |
2673 | last = first; | |
2674 | else if (!first && last) | |
2675 | first = last; | |
8990e307 LW |
2676 | else if (first) |
2677 | first->op_sibling = last; | |
79072805 LW |
2678 | listop->op_first = first; |
2679 | listop->op_last = last; | |
8990e307 | 2680 | if (type == OP_LIST) { |
551405c4 | 2681 | OP* const pushop = newOP(OP_PUSHMARK, 0); |
8990e307 LW |
2682 | pushop->op_sibling = first; |
2683 | listop->op_first = pushop; | |
2684 | listop->op_flags |= OPf_KIDS; | |
2685 | if (!last) | |
2686 | listop->op_last = pushop; | |
2687 | } | |
79072805 | 2688 | |
463d09e6 | 2689 | return CHECKOP(type, listop); |
79072805 LW |
2690 | } |
2691 | ||
2692 | OP * | |
864dbfa3 | 2693 | Perl_newOP(pTHX_ I32 type, I32 flags) |
79072805 | 2694 | { |
27da23d5 | 2695 | dVAR; |
11343788 | 2696 | OP *o; |
b7dc083c | 2697 | NewOp(1101, o, 1, OP); |
eb160463 | 2698 | o->op_type = (OPCODE)type; |
22c35a8c | 2699 | o->op_ppaddr = PL_ppaddr[type]; |
eb160463 | 2700 | o->op_flags = (U8)flags; |
79072805 | 2701 | |
11343788 | 2702 | o->op_next = o; |
eb160463 | 2703 | o->op_private = (U8)(0 | (flags >> 8)); |
22c35a8c | 2704 | if (PL_opargs[type] & OA_RETSCALAR) |
11343788 | 2705 | scalar(o); |
22c35a8c | 2706 | if (PL_opargs[type] & OA_TARGET) |
11343788 MB |
2707 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
2708 | return CHECKOP(type, o); | |
79072805 LW |
2709 | } |
2710 | ||
2711 | OP * | |
864dbfa3 | 2712 | Perl_newUNOP(pTHX_ I32 type, I32 flags, OP *first) |
79072805 | 2713 | { |
27da23d5 | 2714 | dVAR; |
79072805 LW |
2715 | UNOP *unop; |
2716 | ||
93a17b20 | 2717 | if (!first) |
aeea060c | 2718 | first = newOP(OP_STUB, 0); |
22c35a8c | 2719 | if (PL_opargs[type] & OA_MARK) |
8990e307 | 2720 | first = force_list(first); |
93a17b20 | 2721 | |
b7dc083c | 2722 | NewOp(1101, unop, 1, UNOP); |
eb160463 | 2723 | unop->op_type = (OPCODE)type; |
22c35a8c | 2724 | unop->op_ppaddr = PL_ppaddr[type]; |
79072805 | 2725 | unop->op_first = first; |
585ec06d | 2726 | unop->op_flags = (U8)(flags | OPf_KIDS); |
eb160463 | 2727 | unop->op_private = (U8)(1 | (flags >> 8)); |
e50aee73 | 2728 | unop = (UNOP*) CHECKOP(type, unop); |
79072805 LW |
2729 | if (unop->op_next) |
2730 | return (OP*)unop; | |
2731 | ||
a0d0e21e | 2732 | return fold_constants((OP *) unop); |
79072805 LW |
2733 | } |
2734 | ||
2735 | OP * | |
864dbfa3 | 2736 | Perl_newBINOP(pTHX_ I32 type, I32 flags, OP *first, OP *last) |
79072805 | 2737 | { |
27da23d5 | 2738 | dVAR; |
79072805 | 2739 | BINOP *binop; |
b7dc083c | 2740 | NewOp(1101, binop, 1, BINOP); |
79072805 LW |
2741 | |
2742 | if (!first) | |
2743 | first = newOP(OP_NULL, 0); | |
2744 | ||
eb160463 | 2745 | binop->op_type = (OPCODE)type; |
22c35a8c | 2746 | binop->op_ppaddr = PL_ppaddr[type]; |
79072805 | 2747 | binop->op_first = first; |
585ec06d | 2748 | binop->op_flags = (U8)(flags | OPf_KIDS); |
79072805 LW |
2749 | if (!last) { |
2750 | last = first; | |
eb160463 | 2751 | binop->op_private = (U8)(1 | (flags >> 8)); |
79072805 LW |
2752 | } |
2753 | else { | |
eb160463 | 2754 | binop->op_private = (U8)(2 | (flags >> 8)); |
79072805 LW |
2755 | first->op_sibling = last; |
2756 | } | |
2757 | ||
e50aee73 | 2758 | binop = (BINOP*)CHECKOP(type, binop); |
eb160463 | 2759 | if (binop->op_next || binop->op_type != (OPCODE)type) |
79072805 LW |
2760 | return (OP*)binop; |
2761 | ||
7284ab6f | 2762 | binop->op_last = binop->op_first->op_sibling; |
79072805 | 2763 | |
a0d0e21e | 2764 | return fold_constants((OP *)binop); |
79072805 LW |
2765 | } |
2766 | ||
5f66b61c AL |
2767 | static int uvcompare(const void *a, const void *b) |
2768 | __attribute__nonnull__(1) | |
2769 | __attribute__nonnull__(2) | |
2770 | __attribute__pure__; | |
abb2c242 | 2771 | static int uvcompare(const void *a, const void *b) |
2b9d42f0 | 2772 | { |
e1ec3a88 | 2773 | if (*((const UV *)a) < (*(const UV *)b)) |
2b9d42f0 | 2774 | return -1; |
e1ec3a88 | 2775 | if (*((const UV *)a) > (*(const UV *)b)) |
2b9d42f0 | 2776 | return 1; |
e1ec3a88 | 2777 | if (*((const UV *)a+1) < (*(const UV *)b+1)) |
2b9d42f0 | 2778 | return -1; |
e1ec3a88 | 2779 | if (*((const UV *)a+1) > (*(const UV *)b+1)) |
2b9d42f0 | 2780 | return 1; |
a0ed51b3 LW |
2781 | return 0; |
2782 | } | |
2783 | ||
79072805 | 2784 | OP * |
864dbfa3 | 2785 | Perl_pmtrans(pTHX_ OP *o, OP *expr, OP *repl) |
79072805 | 2786 | { |
97aff369 | 2787 | dVAR; |
2d03de9c AL |
2788 | SV * const tstr = ((SVOP*)expr)->op_sv; |
2789 | SV * const rstr = ((SVOP*)repl)->op_sv; | |
463ee0b2 LW |
2790 | STRLEN tlen; |
2791 | STRLEN rlen; | |
5c144d81 NC |
2792 | const U8 *t = (U8*)SvPV_const(tstr, tlen); |
2793 | const U8 *r = (U8*)SvPV_const(rstr, rlen); | |
79072805 LW |
2794 | register I32 i; |
2795 | register I32 j; | |
9b877dbb | 2796 | I32 grows = 0; |
79072805 LW |
2797 | register short *tbl; |
2798 | ||
551405c4 AL |
2799 | const I32 complement = o->op_private & OPpTRANS_COMPLEMENT; |
2800 | const I32 squash = o->op_private & OPpTRANS_SQUASH; | |
2801 | I32 del = o->op_private & OPpTRANS_DELETE; | |
800b4dc4 | 2802 | PL_hints |= HINT_BLOCK_SCOPE; |
1c846c1f | 2803 | |
036b4402 GS |
2804 | if (SvUTF8(tstr)) |
2805 | o->op_private |= OPpTRANS_FROM_UTF; | |
1c846c1f NIS |
2806 | |
2807 | if (SvUTF8(rstr)) | |
036b4402 | 2808 | o->op_private |= OPpTRANS_TO_UTF; |
79072805 | 2809 | |
a0ed51b3 | 2810 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { |
396482e1 | 2811 | SV* const listsv = newSVpvs("# comment\n"); |
c445ea15 | 2812 | SV* transv = NULL; |
5c144d81 NC |
2813 | const U8* tend = t + tlen; |
2814 | const U8* rend = r + rlen; | |
ba210ebe | 2815 | STRLEN ulen; |
84c133a0 RB |
2816 | UV tfirst = 1; |
2817 | UV tlast = 0; | |
2818 | IV tdiff; | |
2819 | UV rfirst = 1; | |
2820 | UV rlast = 0; | |
2821 | IV rdiff; | |
2822 | IV diff; | |
a0ed51b3 LW |
2823 | I32 none = 0; |
2824 | U32 max = 0; | |
2825 | I32 bits; | |
a0ed51b3 | 2826 | I32 havefinal = 0; |
9c5ffd7c | 2827 | U32 final = 0; |
551405c4 AL |
2828 | const I32 from_utf = o->op_private & OPpTRANS_FROM_UTF; |
2829 | const I32 to_utf = o->op_private & OPpTRANS_TO_UTF; | |
bf4a1e57 JH |
2830 | U8* tsave = NULL; |
2831 | U8* rsave = NULL; | |
9f7f3913 | 2832 | const U32 flags = UTF8_ALLOW_DEFAULT; |
bf4a1e57 JH |
2833 | |
2834 | if (!from_utf) { | |
2835 | STRLEN len = tlen; | |
5c144d81 | 2836 | t = tsave = bytes_to_utf8(t, &len); |
bf4a1e57 JH |
2837 | tend = t + len; |
2838 | } | |
2839 | if (!to_utf && rlen) { | |
2840 | STRLEN len = rlen; | |
5c144d81 | 2841 | r = rsave = bytes_to_utf8(r, &len); |
bf4a1e57 JH |
2842 | rend = r + len; |
2843 | } | |
a0ed51b3 | 2844 | |
2b9d42f0 NIS |
2845 | /* There are several snags with this code on EBCDIC: |
2846 | 1. 0xFF is a legal UTF-EBCDIC byte (there are no illegal bytes). | |
2847 | 2. scan_const() in toke.c has encoded chars in native encoding which makes | |
2848 | ranges at least in EBCDIC 0..255 range the bottom odd. | |
2849 | */ | |
2850 | ||
a0ed51b3 | 2851 | if (complement) { |
89ebb4a3 | 2852 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
2b9d42f0 | 2853 | UV *cp; |
a0ed51b3 | 2854 | UV nextmin = 0; |
a02a5408 | 2855 | Newx(cp, 2*tlen, UV); |
a0ed51b3 | 2856 | i = 0; |
396482e1 | 2857 | transv = newSVpvs(""); |
a0ed51b3 | 2858 | while (t < tend) { |
9f7f3913 | 2859 | cp[2*i] = utf8n_to_uvuni(t, tend-t, &ulen, flags); |
2b9d42f0 NIS |
2860 | t += ulen; |
2861 | if (t < tend && NATIVE_TO_UTF(*t) == 0xff) { | |
a0ed51b3 | 2862 | t++; |
9f7f3913 | 2863 | cp[2*i+1] = utf8n_to_uvuni(t, tend-t, &ulen, flags); |
2b9d42f0 | 2864 | t += ulen; |
a0ed51b3 | 2865 | } |
2b9d42f0 NIS |
2866 | else { |
2867 | cp[2*i+1] = cp[2*i]; | |
2868 | } | |
2869 | i++; | |
a0ed51b3 | 2870 | } |
2b9d42f0 | 2871 | qsort(cp, i, 2*sizeof(UV), uvcompare); |
a0ed51b3 | 2872 | for (j = 0; j < i; j++) { |
2b9d42f0 | 2873 | UV val = cp[2*j]; |
a0ed51b3 LW |
2874 | diff = val - nextmin; |
2875 | if (diff > 0) { | |
9041c2e3 | 2876 | t = uvuni_to_utf8(tmpbuf,nextmin); |
dfe13c55 | 2877 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 | 2878 | if (diff > 1) { |
2b9d42f0 | 2879 | U8 range_mark = UTF_TO_NATIVE(0xff); |
9041c2e3 | 2880 | t = uvuni_to_utf8(tmpbuf, val - 1); |
2b9d42f0 | 2881 | sv_catpvn(transv, (char *)&range_mark, 1); |
dfe13c55 | 2882 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 LW |
2883 | } |
2884 | } | |
2b9d42f0 | 2885 | val = cp[2*j+1]; |
a0ed51b3 LW |
2886 | if (val >= nextmin) |
2887 | nextmin = val + 1; | |
2888 | } | |
9041c2e3 | 2889 | t = uvuni_to_utf8(tmpbuf,nextmin); |
dfe13c55 | 2890 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
2b9d42f0 NIS |
2891 | { |
2892 | U8 range_mark = UTF_TO_NATIVE(0xff); | |
2893 | sv_catpvn(transv, (char *)&range_mark, 1); | |
2894 | } | |
b851fbc1 JH |
2895 | t = uvuni_to_utf8_flags(tmpbuf, 0x7fffffff, |
2896 | UNICODE_ALLOW_SUPER); | |
dfe13c55 | 2897 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
93524f2b | 2898 | t = (const U8*)SvPVX_const(transv); |
a0ed51b3 LW |
2899 | tlen = SvCUR(transv); |
2900 | tend = t + tlen; | |
455d824a | 2901 | Safefree(cp); |
a0ed51b3 LW |
2902 | } |
2903 | else if (!rlen && !del) { | |
2904 | r = t; rlen = tlen; rend = tend; | |
4757a243 LW |
2905 | } |
2906 | if (!squash) { | |
05d340b8 | 2907 | if ((!rlen && !del) || t == r || |
12ae5dfc | 2908 | (tlen == rlen && memEQ((char *)t, (char *)r, tlen))) |
01ec43d0 | 2909 | { |
4757a243 | 2910 | o->op_private |= OPpTRANS_IDENTICAL; |
01ec43d0 | 2911 | } |
a0ed51b3 LW |
2912 | } |
2913 | ||
2914 | while (t < tend || tfirst <= tlast) { | |
2915 | /* see if we need more "t" chars */ | |
2916 | if (tfirst > tlast) { | |
9f7f3913 | 2917 | tfirst = (I32)utf8n_to_uvuni(t, tend - t, &ulen, flags); |
a0ed51b3 | 2918 | t += ulen; |
2b9d42f0 | 2919 | if (t < tend && NATIVE_TO_UTF(*t) == 0xff) { /* illegal utf8 val indicates range */ |
ba210ebe | 2920 | t++; |
9f7f3913 | 2921 | tlast = (I32)utf8n_to_uvuni(t, tend - t, &ulen, flags); |
a0ed51b3 LW |
2922 | t += ulen; |
2923 | } | |
2924 | else | |
2925 | tlast = tfirst; | |
2926 | } | |
2927 | ||
2928 | /* now see if we need more "r" chars */ | |
2929 | if (rfirst > rlast) { | |
2930 | if (r < rend) { | |
9f7f3913 | 2931 | rfirst = (I32)utf8n_to_uvuni(r, rend - r, &ulen, flags); |
a0ed51b3 | 2932 | r += ulen; |
2b9d42f0 | 2933 | if (r < rend && NATIVE_TO_UTF(*r) == 0xff) { /* illegal utf8 val indicates range */ |
ba210ebe | 2934 | r++; |
9f7f3913 | 2935 | rlast = (I32)utf8n_to_uvuni(r, rend - r, &ulen, flags); |
a0ed51b3 LW |
2936 | r += ulen; |
2937 | } | |
2938 | else | |
2939 | rlast = rfirst; | |
2940 | } | |
2941 | else { | |
2942 | if (!havefinal++) | |
2943 | final = rlast; | |
2944 | rfirst = rlast = 0xffffffff; | |
2945 | } | |
2946 | } | |
2947 | ||
2948 | /* now see which range will peter our first, if either. */ | |
2949 | tdiff = tlast - tfirst; | |
2950 | rdiff = rlast - rfirst; | |
2951 | ||
2952 | if (tdiff <= rdiff) | |
2953 | diff = tdiff; | |
2954 | else | |
2955 | diff = rdiff; | |
2956 | ||
2957 | if (rfirst == 0xffffffff) { | |
2958 | diff = tdiff; /* oops, pretend rdiff is infinite */ | |
2959 | if (diff > 0) | |
894356b3 GS |
2960 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t%04lx\tXXXX\n", |
2961 | (long)tfirst, (long)tlast); | |
a0ed51b3 | 2962 | else |
894356b3 | 2963 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t\tXXXX\n", (long)tfirst); |
a0ed51b3 LW |
2964 | } |
2965 | else { | |
2966 | if (diff > 0) | |
894356b3 GS |
2967 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t%04lx\t%04lx\n", |
2968 | (long)tfirst, (long)(tfirst + diff), | |
2969 | (long)rfirst); | |
a0ed51b3 | 2970 | else |
894356b3 GS |
2971 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t\t%04lx\n", |
2972 | (long)tfirst, (long)rfirst); | |
a0ed51b3 LW |
2973 | |
2974 | if (rfirst + diff > max) | |
2975 | max = rfirst + diff; | |
9b877dbb | 2976 | if (!grows) |
45005bfb JH |
2977 | grows = (tfirst < rfirst && |
2978 | UNISKIP(tfirst) < UNISKIP(rfirst + diff)); | |
2979 | rfirst += diff + 1; | |
a0ed51b3 LW |
2980 | } |
2981 | tfirst += diff + 1; | |
2982 | } | |
2983 | ||
2984 | none = ++max; | |
2985 | if (del) | |
2986 | del = ++max; | |
2987 | ||
2988 | if (max > 0xffff) | |
2989 | bits = 32; | |
2990 | else if (max > 0xff) | |
2991 | bits = 16; | |
2992 | else | |
2993 | bits = 8; | |
2994 | ||
455d824a | 2995 | Safefree(cPVOPo->op_pv); |
a0ed51b3 LW |
2996 | cSVOPo->op_sv = (SV*)swash_init("utf8", "", listsv, bits, none); |
2997 | SvREFCNT_dec(listsv); | |
b37c2d43 | 2998 | SvREFCNT_dec(transv); |
a0ed51b3 | 2999 | |
45005bfb | 3000 | if (!del && havefinal && rlen) |
b448e4fe JH |
3001 | (void)hv_store((HV*)SvRV((cSVOPo->op_sv)), "FINAL", 5, |
3002 | newSVuv((UV)final), 0); | |
a0ed51b3 | 3003 | |
9b877dbb | 3004 | if (grows) |
a0ed51b3 LW |
3005 | o->op_private |= OPpTRANS_GROWS; |
3006 | ||
b37c2d43 AL |
3007 | Safefree(tsave); |
3008 | Safefree(rsave); | |
9b877dbb | 3009 | |
eb8433b7 NC |
3010 | #ifdef PERL_MAD |
3011 | op_getmad(expr,o,'e'); | |
3012 | op_getmad(repl,o,'r'); | |
3013 | #else | |
a0ed51b3 LW |
3014 | op_free(expr); |
3015 | op_free(repl); | |
eb8433b7 | 3016 | #endif |
a0ed51b3 LW |
3017 | return o; |
3018 | } | |
3019 | ||
3020 | tbl = (short*)cPVOPo->op_pv; | |
79072805 LW |
3021 | if (complement) { |
3022 | Zero(tbl, 256, short); | |
eb160463 | 3023 | for (i = 0; i < (I32)tlen; i++) |
ec49126f | 3024 | tbl[t[i]] = -1; |
79072805 LW |
3025 | for (i = 0, j = 0; i < 256; i++) { |
3026 | if (!tbl[i]) { | |
eb160463 | 3027 | if (j >= (I32)rlen) { |
a0ed51b3 | 3028 | if (del) |
79072805 LW |
3029 | tbl[i] = -2; |
3030 | else if (rlen) | |
ec49126f | 3031 | tbl[i] = r[j-1]; |
79072805 | 3032 | else |
eb160463 | 3033 | tbl[i] = (short)i; |
79072805 | 3034 | } |
9b877dbb IH |
3035 | else { |
3036 | if (i < 128 && r[j] >= 128) | |
3037 | grows = 1; | |
ec49126f | 3038 | tbl[i] = r[j++]; |
9b877dbb | 3039 | } |
79072805 LW |
3040 | } |
3041 | } | |
05d340b8 JH |
3042 | if (!del) { |
3043 | if (!rlen) { | |
3044 | j = rlen; | |
3045 | if (!squash) | |
3046 | o->op_private |= OPpTRANS_IDENTICAL; | |
3047 | } | |
eb160463 | 3048 | else if (j >= (I32)rlen) |
05d340b8 JH |
3049 | j = rlen - 1; |
3050 | else | |
3051 | cPVOPo->op_pv = (char*)Renew(tbl, 0x101+rlen-j, short); | |
585ec06d | 3052 | tbl[0x100] = (short)(rlen - j); |
eb160463 | 3053 | for (i=0; i < (I32)rlen - j; i++) |
8973db79 JH |
3054 | tbl[0x101+i] = r[j+i]; |
3055 | } | |
79072805 LW |
3056 | } |
3057 | else { | |
a0ed51b3 | 3058 | if (!rlen && !del) { |
79072805 | 3059 | r = t; rlen = tlen; |
5d06d08e | 3060 | if (!squash) |
4757a243 | 3061 | o->op_private |= OPpTRANS_IDENTICAL; |
79072805 | 3062 | } |
94bfe852 RGS |
3063 | else if (!squash && rlen == tlen && memEQ((char*)t, (char*)r, tlen)) { |
3064 | o->op_private |= OPpTRANS_IDENTICAL; | |
3065 | } | |
79072805 LW |
3066 | for (i = 0; i < 256; i++) |
3067 | tbl[i] = -1; | |
eb160463 GS |
3068 | for (i = 0, j = 0; i < (I32)tlen; i++,j++) { |
3069 | if (j >= (I32)rlen) { | |
a0ed51b3 | 3070 | if (del) { |
ec49126f | 3071 | if (tbl[t[i]] == -1) |
3072 | tbl[t[i]] = -2; | |
79072805 LW |
3073 | continue; |
3074 | } | |
3075 | --j; | |
3076 | } | |
9b877dbb IH |
3077 | if (tbl[t[i]] == -1) { |
3078 | if (t[i] < 128 && r[j] >= 128) | |
3079 | grows = 1; | |
ec49126f | 3080 | tbl[t[i]] = r[j]; |
9b877dbb | 3081 | } |
79072805 LW |
3082 | } |
3083 | } | |
9b877dbb IH |
3084 | if (grows) |
3085 | o->op_private |= OPpTRANS_GROWS; | |
eb8433b7 NC |
3086 | #ifdef PERL_MAD |
3087 | op_getmad(expr,o,'e'); | |
3088 | op_getmad(repl,o,'r'); | |
3089 | #else | |
79072805 LW |
3090 | op_free(expr); |
3091 | op_free(repl); | |
eb8433b7 | 3092 | #endif |
79072805 | 3093 | |
11343788 | 3094 | return o; |
79072805 LW |
3095 | } |
3096 | ||
3097 | OP * | |
864dbfa3 | 3098 | Perl_newPMOP(pTHX_ I32 type, I32 flags) |
79072805 | 3099 | { |
27da23d5 | 3100 | dVAR; |
79072805 LW |
3101 | PMOP *pmop; |
3102 | ||
b7dc083c | 3103 | NewOp(1101, pmop, 1, PMOP); |
eb160463 | 3104 | pmop->op_type = (OPCODE)type; |
22c35a8c | 3105 | pmop->op_ppaddr = PL_ppaddr[type]; |
eb160463 GS |
3106 | pmop->op_flags = (U8)flags; |
3107 | pmop->op_private = (U8)(0 | (flags >> 8)); | |
79072805 | 3108 | |
3280af22 | 3109 | if (PL_hints & HINT_RE_TAINT) |
b3eb6a9b | 3110 | pmop->op_pmpermflags |= PMf_RETAINT; |
3280af22 | 3111 | if (PL_hints & HINT_LOCALE) |
b3eb6a9b GS |
3112 | pmop->op_pmpermflags |= PMf_LOCALE; |
3113 | pmop->op_pmflags = pmop->op_pmpermflags; | |
36477c24 | 3114 | |
debc9467 | 3115 | #ifdef USE_ITHREADS |
551405c4 AL |
3116 | if (av_len((AV*) PL_regex_pad[0]) > -1) { |
3117 | SV * const repointer = av_pop((AV*)PL_regex_pad[0]); | |
3118 | pmop->op_pmoffset = SvIV(repointer); | |
3119 | SvREPADTMP_off(repointer); | |
3120 | sv_setiv(repointer,0); | |
3121 | } else { | |
3122 | SV * const repointer = newSViv(0); | |
b37c2d43 | 3123 | av_push(PL_regex_padav, SvREFCNT_inc_simple_NN(repointer)); |
551405c4 AL |
3124 | pmop->op_pmoffset = av_len(PL_regex_padav); |
3125 | PL_regex_pad = AvARRAY(PL_regex_padav); | |
13137afc | 3126 | } |
debc9467 | 3127 | #endif |
1eb1540c | 3128 | |
1fcf4c12 | 3129 | /* link into pm list */ |
3280af22 | 3130 | if (type != OP_TRANS && PL_curstash) { |
8d2f4536 NC |
3131 | MAGIC *mg = mg_find((SV*)PL_curstash, PERL_MAGIC_symtab); |
3132 | ||
3133 | if (!mg) { | |
3134 | mg = sv_magicext((SV*)PL_curstash, 0, PERL_MAGIC_symtab, 0, 0, 0); | |
3135 | } | |
3136 | pmop->op_pmnext = (PMOP*)mg->mg_obj; | |
3137 | mg->mg_obj = (SV*)pmop; | |
cb55de95 | 3138 | PmopSTASH_set(pmop,PL_curstash); |
79072805 LW |
3139 | } |
3140 | ||
463d09e6 | 3141 | return CHECKOP(type, pmop); |
79072805 LW |
3142 | } |
3143 | ||
131b3ad0 DM |
3144 | /* Given some sort of match op o, and an expression expr containing a |
3145 | * pattern, either compile expr into a regex and attach it to o (if it's | |
3146 | * constant), or convert expr into a runtime regcomp op sequence (if it's | |
3147 | * not) | |
3148 | * | |
3149 | * isreg indicates that the pattern is part of a regex construct, eg | |
3150 | * $x =~ /pattern/ or split /pattern/, as opposed to $x =~ $pattern or | |
3151 | * split "pattern", which aren't. In the former case, expr will be a list | |
3152 | * if the pattern contains more than one term (eg /a$b/) or if it contains | |
3153 | * a replacement, ie s/// or tr///. | |
3154 | */ | |
3155 | ||
79072805 | 3156 | OP * |
131b3ad0 | 3157 | Perl_pmruntime(pTHX_ OP *o, OP *expr, bool isreg) |
79072805 | 3158 | { |
27da23d5 | 3159 | dVAR; |
79072805 LW |
3160 | PMOP *pm; |
3161 | LOGOP *rcop; | |
ce862d02 | 3162 | I32 repl_has_vars = 0; |
5f66b61c | 3163 | OP* repl = NULL; |
131b3ad0 DM |
3164 | bool reglist; |
3165 | ||
3166 | if (o->op_type == OP_SUBST || o->op_type == OP_TRANS) { | |
3167 | /* last element in list is the replacement; pop it */ | |
3168 | OP* kid; | |
3169 | repl = cLISTOPx(expr)->op_last; | |
3170 | kid = cLISTOPx(expr)->op_first; | |
3171 | while (kid->op_sibling != repl) | |
3172 | kid = kid->op_sibling; | |
5f66b61c | 3173 | kid->op_sibling = NULL; |
131b3ad0 DM |
3174 | cLISTOPx(expr)->op_last = kid; |
3175 | } | |
79072805 | 3176 | |
131b3ad0 DM |
3177 | if (isreg && expr->op_type == OP_LIST && |
3178 | cLISTOPx(expr)->op_first->op_sibling == cLISTOPx(expr)->op_last) | |
3179 | { | |
3180 | /* convert single element list to element */ | |
0bd48802 | 3181 | OP* const oe = expr; |
131b3ad0 | 3182 | expr = cLISTOPx(oe)->op_first->op_sibling; |
5f66b61c AL |
3183 | cLISTOPx(oe)->op_first->op_sibling = NULL; |
3184 | cLISTOPx(oe)->op_last = NULL; | |
131b3ad0 DM |
3185 | op_free(oe); |
3186 | } | |
3187 | ||
3188 | if (o->op_type == OP_TRANS) { | |
11343788 | 3189 | return pmtrans(o, expr, repl); |
131b3ad0 DM |
3190 | } |
3191 | ||
3192 | reglist = isreg && expr->op_type == OP_LIST; | |
3193 | if (reglist) | |
3194 | op_null(expr); | |
79072805 | 3195 | |
3280af22 | 3196 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 3197 | pm = (PMOP*)o; |
79072805 LW |
3198 | |
3199 | if (expr->op_type == OP_CONST) { | |
463ee0b2 | 3200 | STRLEN plen; |
6136c704 | 3201 | SV * const pat = ((SVOP*)expr)->op_sv; |
5c144d81 | 3202 | const char *p = SvPV_const(pat, plen); |
770526c1 | 3203 | if ((o->op_flags & OPf_SPECIAL) && (*p == ' ' && p[1] == '\0')) { |
5c144d81 NC |
3204 | U32 was_readonly = SvREADONLY(pat); |
3205 | ||
3206 | if (was_readonly) { | |
3207 | if (SvFAKE(pat)) { | |
3208 | sv_force_normal_flags(pat, 0); | |
3209 | assert(!SvREADONLY(pat)); | |
3210 | was_readonly = 0; | |
3211 | } else { | |
3212 | SvREADONLY_off(pat); | |
3213 | } | |
3214 | } | |
3215 | ||
93a17b20 | 3216 | sv_setpvn(pat, "\\s+", 3); |
5c144d81 NC |
3217 | |
3218 | SvFLAGS(pat) |= was_readonly; | |
3219 | ||
3220 | p = SvPV_const(pat, plen); | |
79072805 LW |
3221 | pm->op_pmflags |= PMf_SKIPWHITE; |
3222 | } | |
5b71a6a7 | 3223 | if (DO_UTF8(pat)) |
a5961de5 | 3224 | pm->op_pmdynflags |= PMdf_UTF8; |
5c144d81 NC |
3225 | /* FIXME - can we make this function take const char * args? */ |
3226 | PM_SETRE(pm, CALLREGCOMP(aTHX_ (char*)p, (char*)p + plen, pm)); | |
aaa362c4 | 3227 | if (strEQ("\\s+", PM_GETRE(pm)->precomp)) |
85e6fe83 | 3228 | pm->op_pmflags |= PMf_WHITE; |
eb8433b7 NC |
3229 | #ifdef PERL_MAD |
3230 | op_getmad(expr,(OP*)pm,'e'); | |
3231 | #else | |
79072805 | 3232 | op_free(expr); |
eb8433b7 | 3233 | #endif |
79072805 LW |
3234 | } |
3235 | else { | |
3280af22 | 3236 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) |
1c846c1f | 3237 | expr = newUNOP((!(PL_hints & HINT_RE_EVAL) |
2cd61cdb IZ |
3238 | ? OP_REGCRESET |
3239 | : OP_REGCMAYBE),0,expr); | |
463ee0b2 | 3240 | |
b7dc083c | 3241 | NewOp(1101, rcop, 1, LOGOP); |
79072805 | 3242 | rcop->op_type = OP_REGCOMP; |
22c35a8c | 3243 | rcop->op_ppaddr = PL_ppaddr[OP_REGCOMP]; |
79072805 | 3244 | rcop->op_first = scalar(expr); |
131b3ad0 DM |
3245 | rcop->op_flags |= OPf_KIDS |
3246 | | ((PL_hints & HINT_RE_EVAL) ? OPf_SPECIAL : 0) | |
3247 | | (reglist ? OPf_STACKED : 0); | |
79072805 | 3248 | rcop->op_private = 1; |
11343788 | 3249 | rcop->op_other = o; |
131b3ad0 DM |
3250 | if (reglist) |
3251 | rcop->op_targ = pad_alloc(rcop->op_type, SVs_PADTMP); | |
3252 | ||
b5c19bd7 DM |
3253 | /* /$x/ may cause an eval, since $x might be qr/(?{..})/ */ |
3254 | PL_cv_has_eval = 1; | |
79072805 LW |
3255 | |
3256 | /* establish postfix order */ | |
3280af22 | 3257 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) { |
463ee0b2 LW |
3258 | LINKLIST(expr); |
3259 | rcop->op_next = expr; | |
3260 | ((UNOP*)expr)->op_first->op_next = (OP*)rcop; | |
3261 | } | |
3262 | else { | |
3263 | rcop->op_next = LINKLIST(expr); | |
3264 | expr->op_next = (OP*)rcop; | |
3265 | } | |
79072805 | 3266 | |
11343788 | 3267 | prepend_elem(o->op_type, scalar((OP*)rcop), o); |
79072805 LW |
3268 | } |
3269 | ||
3270 | if (repl) { | |
748a9306 | 3271 | OP *curop; |
0244c3a4 | 3272 | if (pm->op_pmflags & PMf_EVAL) { |
6136c704 | 3273 | curop = NULL; |
8bafa735 | 3274 | if (CopLINE(PL_curcop) < (line_t)PL_multi_end) |
eb160463 | 3275 | CopLINE_set(PL_curcop, (line_t)PL_multi_end); |
0244c3a4 | 3276 | } |
748a9306 LW |
3277 | else if (repl->op_type == OP_CONST) |
3278 | curop = repl; | |
79072805 | 3279 | else { |
c445ea15 | 3280 | OP *lastop = NULL; |
79072805 | 3281 | for (curop = LINKLIST(repl); curop!=repl; curop = LINKLIST(curop)) { |
22c35a8c | 3282 | if (PL_opargs[curop->op_type] & OA_DANGEROUS) { |
79072805 | 3283 | if (curop->op_type == OP_GV) { |
6136c704 | 3284 | GV * const gv = cGVOPx_gv(curop); |
ce862d02 | 3285 | repl_has_vars = 1; |
f702bf4a | 3286 | if (strchr("&`'123456789+-\016\022", *GvENAME(gv))) |
79072805 LW |
3287 | break; |
3288 | } | |
3289 | else if (curop->op_type == OP_RV2CV) | |
3290 | break; | |
3291 | else if (curop->op_type == OP_RV2SV || | |
3292 | curop->op_type == OP_RV2AV || | |
3293 | curop->op_type == OP_RV2HV || | |
3294 | curop->op_type == OP_RV2GV) { | |
3295 | if (lastop && lastop->op_type != OP_GV) /*funny deref?*/ | |
3296 | break; | |
3297 | } | |
748a9306 LW |
3298 | else if (curop->op_type == OP_PADSV || |
3299 | curop->op_type == OP_PADAV || | |
3300 | curop->op_type == OP_PADHV || | |
554b3eca | 3301 | curop->op_type == OP_PADANY) { |
ce862d02 | 3302 | repl_has_vars = 1; |
748a9306 | 3303 | } |
1167e5da | 3304 | else if (curop->op_type == OP_PUSHRE) |
6f207bd3 | 3305 | NOOP; /* Okay here, dangerous in newASSIGNOP */ |
79072805 LW |
3306 | else |
3307 | break; | |
3308 | } | |
3309 | lastop = curop; | |
3310 | } | |
748a9306 | 3311 | } |
ce862d02 | 3312 | if (curop == repl |
1c846c1f | 3313 | && !(repl_has_vars |
aaa362c4 RS |
3314 | && (!PM_GETRE(pm) |
3315 | || PM_GETRE(pm)->reganch & ROPT_EVAL_SEEN))) { | |
748a9306 | 3316 | pm->op_pmflags |= PMf_CONST; /* const for long enough */ |
4633a7c4 | 3317 | pm->op_pmpermflags |= PMf_CONST; /* const for long enough */ |
11343788 | 3318 | prepend_elem(o->op_type, scalar(repl), o); |
748a9306 LW |
3319 | } |
3320 | else { | |
aaa362c4 | 3321 | if (curop == repl && !PM_GETRE(pm)) { /* Has variables. */ |
ce862d02 IZ |
3322 | pm->op_pmflags |= PMf_MAYBE_CONST; |
3323 | pm->op_pmpermflags |= PMf_MAYBE_CONST; | |
3324 | } | |
b7dc083c | 3325 | NewOp(1101, rcop, 1, LOGOP); |
748a9306 | 3326 | rcop->op_type = OP_SUBSTCONT; |
22c35a8c | 3327 | rcop->op_ppaddr = PL_ppaddr[OP_SUBSTCONT]; |
748a9306 LW |
3328 | rcop->op_first = scalar(repl); |
3329 | rcop->op_flags |= OPf_KIDS; | |
3330 | rcop->op_private = 1; | |
11343788 | 3331 | rcop->op_other = o; |
748a9306 LW |
3332 | |
3333 | /* establish postfix order */ | |
3334 | rcop->op_next = LINKLIST(repl); | |
3335 | repl->op_next = (OP*)rcop; | |
3336 | ||
3337 | pm->op_pmreplroot = scalar((OP*)rcop); | |
3338 | pm->op_pmreplstart = LINKLIST(rcop); | |
3339 | rcop->op_next = 0; | |
79072805 LW |
3340 | } |
3341 | } | |
3342 | ||
3343 | return (OP*)pm; | |
3344 | } | |
3345 | ||
3346 | OP * | |
864dbfa3 | 3347 | Perl_newSVOP(pTHX_ I32 type, I32 flags, SV *sv) |
79072805 | 3348 | { |
27da23d5 | 3349 | dVAR; |
79072805 | 3350 | SVOP *svop; |
b7dc083c | 3351 | NewOp(1101, svop, 1, SVOP); |
eb160463 | 3352 | svop->op_type = (OPCODE)type; |
22c35a8c | 3353 | svop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
3354 | svop->op_sv = sv; |
3355 | svop->op_next = (OP*)svop; | |
eb160463 | 3356 | svop->op_flags = (U8)flags; |
22c35a8c | 3357 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 3358 | scalar((OP*)svop); |
22c35a8c | 3359 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 3360 | svop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 3361 | return CHECKOP(type, svop); |
79072805 LW |
3362 | } |
3363 | ||
3364 | OP * | |
350de78d GS |
3365 | Perl_newPADOP(pTHX_ I32 type, I32 flags, SV *sv) |
3366 | { | |
27da23d5 | 3367 | dVAR; |
350de78d GS |
3368 | PADOP *padop; |
3369 | NewOp(1101, padop, 1, PADOP); | |
eb160463 | 3370 | padop->op_type = (OPCODE)type; |
350de78d GS |
3371 | padop->op_ppaddr = PL_ppaddr[type]; |
3372 | padop->op_padix = pad_alloc(type, SVs_PADTMP); | |
dd2155a4 DM |
3373 | SvREFCNT_dec(PAD_SVl(padop->op_padix)); |
3374 | PAD_SETSV(padop->op_padix, sv); | |
ce50c033 AMS |
3375 | if (sv) |
3376 | SvPADTMP_on(sv); | |
350de78d | 3377 | padop->op_next = (OP*)padop; |
eb160463 | 3378 | padop->op_flags = (U8)flags; |
350de78d GS |
3379 | if (PL_opargs[type] & OA_RETSCALAR) |
3380 | scalar((OP*)padop); | |
3381 | if (PL_opargs[type] & OA_TARGET) | |
3382 | padop->op_targ = pad_alloc(type, SVs_PADTMP); | |
3383 | return CHECKOP(type, padop); | |
3384 | } | |
3385 | ||
3386 | OP * | |
864dbfa3 | 3387 | Perl_newGVOP(pTHX_ I32 type, I32 flags, GV *gv) |
79072805 | 3388 | { |
27da23d5 | 3389 | dVAR; |
350de78d | 3390 | #ifdef USE_ITHREADS |
ce50c033 AMS |
3391 | if (gv) |
3392 | GvIN_PAD_on(gv); | |
b37c2d43 | 3393 | return newPADOP(type, flags, SvREFCNT_inc_simple(gv)); |
350de78d | 3394 | #else |
b37c2d43 | 3395 | return newSVOP(type, flags, SvREFCNT_inc_simple(gv)); |
350de78d | 3396 | #endif |
79072805 LW |
3397 | } |
3398 | ||
3399 | OP * | |
864dbfa3 | 3400 | Perl_newPVOP(pTHX_ I32 type, I32 flags, char *pv) |
79072805 | 3401 | { |
27da23d5 | 3402 | dVAR; |
79072805 | 3403 | PVOP *pvop; |
b7dc083c | 3404 | NewOp(1101, pvop, 1, PVOP); |
eb160463 | 3405 | pvop->op_type = (OPCODE)type; |
22c35a8c | 3406 | pvop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
3407 | pvop->op_pv = pv; |
3408 | pvop->op_next = (OP*)pvop; | |
eb160463 | 3409 | pvop->op_flags = (U8)flags; |
22c35a8c | 3410 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 3411 | scalar((OP*)pvop); |
22c35a8c | 3412 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 3413 | pvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 3414 | return CHECKOP(type, pvop); |
79072805 LW |
3415 | } |
3416 | ||
eb8433b7 NC |
3417 | #ifdef PERL_MAD |
3418 | OP* | |
3419 | #else | |
79072805 | 3420 | void |
eb8433b7 | 3421 | #endif |
864dbfa3 | 3422 | Perl_package(pTHX_ OP *o) |
79072805 | 3423 | { |
97aff369 | 3424 | dVAR; |
6867be6d | 3425 | const char *name; |
de11ba31 | 3426 | STRLEN len; |
eb8433b7 NC |
3427 | #ifdef PERL_MAD |
3428 | OP *pegop; | |
3429 | #endif | |
79072805 | 3430 | |
3280af22 NIS |
3431 | save_hptr(&PL_curstash); |
3432 | save_item(PL_curstname); | |
de11ba31 | 3433 | |
5c144d81 | 3434 | name = SvPV_const(cSVOPo->op_sv, len); |
de11ba31 AMS |
3435 | PL_curstash = gv_stashpvn(name, len, TRUE); |
3436 | sv_setpvn(PL_curstname, name, len); | |
de11ba31 | 3437 | |
7ad382f4 | 3438 | PL_hints |= HINT_BLOCK_SCOPE; |
3280af22 NIS |
3439 | PL_copline = NOLINE; |
3440 | PL_expect = XSTATE; | |
eb8433b7 NC |
3441 | |
3442 | #ifndef PERL_MAD | |
3443 | op_free(o); | |
3444 | #else | |
3445 | if (!PL_madskills) { | |
3446 | op_free(o); | |
1d866c12 | 3447 | return NULL; |
eb8433b7 NC |
3448 | } |
3449 | ||
3450 | pegop = newOP(OP_NULL,0); | |
3451 | op_getmad(o,pegop,'P'); | |
3452 | return pegop; | |
3453 | #endif | |
79072805 LW |
3454 | } |
3455 | ||
eb8433b7 NC |
3456 | #ifdef PERL_MAD |
3457 | OP* | |
3458 | #else | |
85e6fe83 | 3459 | void |
eb8433b7 | 3460 | #endif |
88d95a4d | 3461 | Perl_utilize(pTHX_ int aver, I32 floor, OP *version, OP *idop, OP *arg) |
85e6fe83 | 3462 | { |
97aff369 | 3463 | dVAR; |
a0d0e21e | 3464 | OP *pack; |
a0d0e21e | 3465 | OP *imop; |
b1cb66bf | 3466 | OP *veop; |
eb8433b7 NC |
3467 | #ifdef PERL_MAD |
3468 | OP *pegop = newOP(OP_NULL,0); | |
3469 | #endif | |
85e6fe83 | 3470 | |
88d95a4d | 3471 | if (idop->op_type != OP_CONST) |
cea2e8a9 | 3472 | Perl_croak(aTHX_ "Module name must be constant"); |
85e6fe83 | 3473 | |
eb8433b7 NC |
3474 | if (PL_madskills) |
3475 | op_getmad(idop,pegop,'U'); | |
3476 | ||
5f66b61c | 3477 | veop = NULL; |
b1cb66bf | 3478 | |
aec46f14 | 3479 | if (version) { |
551405c4 | 3480 | SV * const vesv = ((SVOP*)version)->op_sv; |
b1cb66bf | 3481 | |
eb8433b7 NC |
3482 | if (PL_madskills) |
3483 | op_getmad(version,pegop,'V'); | |
aec46f14 | 3484 | if (!arg && !SvNIOKp(vesv)) { |
b1cb66bf | 3485 | arg = version; |
3486 | } | |
3487 | else { | |
3488 | OP *pack; | |
0f79a09d | 3489 | SV *meth; |
b1cb66bf | 3490 | |
44dcb63b | 3491 | if (version->op_type != OP_CONST || !SvNIOKp(vesv)) |
cea2e8a9 | 3492 | Perl_croak(aTHX_ "Version number must be constant number"); |
b1cb66bf | 3493 | |
88d95a4d JH |
3494 | /* Make copy of idop so we don't free it twice */ |
3495 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)idop)->op_sv)); | |
b1cb66bf | 3496 | |
3497 | /* Fake up a method call to VERSION */ | |
18916d0d | 3498 | meth = newSVpvs_share("VERSION"); |
b1cb66bf | 3499 | veop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, |
3500 | append_elem(OP_LIST, | |
0f79a09d GS |
3501 | prepend_elem(OP_LIST, pack, list(version)), |
3502 | newSVOP(OP_METHOD_NAMED, 0, meth))); | |
b1cb66bf | 3503 | } |
3504 | } | |
aeea060c | 3505 | |
a0d0e21e | 3506 | /* Fake up an import/unimport */ |
eb8433b7 NC |
3507 | if (arg && arg->op_type == OP_STUB) { |
3508 | if (PL_madskills) | |
3509 | op_getmad(arg,pegop,'S'); | |
4633a7c4 | 3510 | imop = arg; /* no import on explicit () */ |
eb8433b7 | 3511 | } |
88d95a4d | 3512 | else if (SvNIOKp(((SVOP*)idop)->op_sv)) { |
5f66b61c | 3513 | imop = NULL; /* use 5.0; */ |
468aa647 RGS |
3514 | if (!aver) |
3515 | idop->op_private |= OPpCONST_NOVER; | |
b1cb66bf | 3516 | } |
4633a7c4 | 3517 | else { |
0f79a09d GS |
3518 | SV *meth; |
3519 | ||
eb8433b7 NC |
3520 | if (PL_madskills) |
3521 | op_getmad(arg,pegop,'A'); | |
3522 | ||
88d95a4d JH |
3523 | /* Make copy of idop so we don't free it twice */ |
3524 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)idop)->op_sv)); | |
0f79a09d GS |
3525 | |
3526 | /* Fake up a method call to import/unimport */ | |
427d62a4 | 3527 | meth = aver |
18916d0d | 3528 | ? newSVpvs_share("import") : newSVpvs_share("unimport"); |
4633a7c4 | 3529 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, |
0f79a09d GS |
3530 | append_elem(OP_LIST, |
3531 | prepend_elem(OP_LIST, pack, list(arg)), | |
3532 | newSVOP(OP_METHOD_NAMED, 0, meth))); | |
4633a7c4 LW |
3533 | } |
3534 | ||
a0d0e21e | 3535 | /* Fake up the BEGIN {}, which does its thing immediately. */ |
09bef843 | 3536 | newATTRSUB(floor, |
18916d0d | 3537 | newSVOP(OP_CONST, 0, newSVpvs_share("BEGIN")), |
5f66b61c AL |
3538 | NULL, |
3539 | NULL, | |
a0d0e21e | 3540 | append_elem(OP_LINESEQ, |
b1cb66bf | 3541 | append_elem(OP_LINESEQ, |
bd61b366 SS |
3542 | newSTATEOP(0, NULL, newUNOP(OP_REQUIRE, 0, idop)), |
3543 | newSTATEOP(0, NULL, veop)), | |
3544 | newSTATEOP(0, NULL, imop) )); | |
85e6fe83 | 3545 | |
70f5e4ed JH |
3546 | /* The "did you use incorrect case?" warning used to be here. |
3547 | * The problem is that on case-insensitive filesystems one | |
3548 | * might get false positives for "use" (and "require"): | |
3549 | * "use Strict" or "require CARP" will work. This causes | |
3550 | * portability problems for the script: in case-strict | |
3551 | * filesystems the script will stop working. | |
3552 | * | |
3553 | * The "incorrect case" warning checked whether "use Foo" | |
3554 | * imported "Foo" to your namespace, but that is wrong, too: | |
3555 | * there is no requirement nor promise in the language that | |
3556 | * a Foo.pm should or would contain anything in package "Foo". | |
3557 | * | |
3558 | * There is very little Configure-wise that can be done, either: | |
3559 | * the case-sensitivity of the build filesystem of Perl does not | |
3560 | * help in guessing the case-sensitivity of the runtime environment. | |
3561 | */ | |
18fc9488 | 3562 | |
c305c6a0 | 3563 | PL_hints |= HINT_BLOCK_SCOPE; |
3280af22 NIS |
3564 | PL_copline = NOLINE; |
3565 | PL_expect = XSTATE; | |
8ec8fbef | 3566 | PL_cop_seqmax++; /* Purely for B::*'s benefit */ |
eb8433b7 NC |
3567 | |
3568 | #ifdef PERL_MAD | |
3569 | if (!PL_madskills) { | |
3570 | /* FIXME - don't allocate pegop if !PL_madskills */ | |
3571 | op_free(pegop); | |
1d866c12 | 3572 | return NULL; |
eb8433b7 NC |
3573 | } |
3574 | return pegop; | |
3575 | #endif | |
85e6fe83 LW |
3576 | } |
3577 | ||
7d3fb230 | 3578 | /* |
ccfc67b7 JH |
3579 | =head1 Embedding Functions |
3580 | ||
7d3fb230 BS |
3581 | =for apidoc load_module |
3582 | ||
3583 | Loads the module whose name is pointed to by the string part of name. | |
3584 | Note that the actual module name, not its filename, should be given. | |
3585 | Eg, "Foo::Bar" instead of "Foo/Bar.pm". flags can be any of | |
3586 | PERL_LOADMOD_DENY, PERL_LOADMOD_NOIMPORT, or PERL_LOADMOD_IMPORT_OPS | |
3587 | (or 0 for no flags). ver, if specified, provides version semantics | |
3588 | similar to C<use Foo::Bar VERSION>. The optional trailing SV* | |
3589 | arguments can be used to specify arguments to the module's import() | |
3590 | method, similar to C<use Foo::Bar VERSION LIST>. | |
3591 | ||
3592 | =cut */ | |
3593 | ||
e4783991 GS |
3594 | void |
3595 | Perl_load_module(pTHX_ U32 flags, SV *name, SV *ver, ...) | |
3596 | { | |
3597 | va_list args; | |
3598 | va_start(args, ver); | |
3599 | vload_module(flags, name, ver, &args); | |
3600 | va_end(args); | |
3601 | } | |
3602 | ||
3603 | #ifdef PERL_IMPLICIT_CONTEXT | |
3604 | void | |
3605 | Perl_load_module_nocontext(U32 flags, SV *name, SV *ver, ...) | |
3606 | { | |
3607 | dTHX; | |
3608 | va_list args; | |
3609 | va_start(args, ver); | |
3610 | vload_module(flags, name, ver, &args); | |
3611 | va_end(args); | |
3612 | } | |
3613 | #endif | |
3614 | ||
3615 | void | |
3616 | Perl_vload_module(pTHX_ U32 flags, SV *name, SV *ver, va_list *args) | |
3617 | { | |
97aff369 | 3618 | dVAR; |
551405c4 | 3619 | OP *veop, *imop; |
e4783991 | 3620 | |
551405c4 | 3621 | OP * const modname = newSVOP(OP_CONST, 0, name); |
e4783991 GS |
3622 | modname->op_private |= OPpCONST_BARE; |
3623 | if (ver) { | |
3624 | veop = newSVOP(OP_CONST, 0, ver); | |
3625 | } | |
3626 | else | |
5f66b61c | 3627 | veop = NULL; |
e4783991 GS |
3628 | if (flags & PERL_LOADMOD_NOIMPORT) { |
3629 | imop = sawparens(newNULLLIST()); | |
3630 | } | |
3631 | else if (flags & PERL_LOADMOD_IMPORT_OPS) { | |
3632 | imop = va_arg(*args, OP*); | |
3633 | } | |
3634 | else { | |
3635 | SV *sv; | |
5f66b61c | 3636 | imop = NULL; |
e4783991 GS |
3637 | sv = va_arg(*args, SV*); |
3638 | while (sv) { | |
3639 | imop = append_elem(OP_LIST, imop, newSVOP(OP_CONST, 0, sv)); | |
3640 | sv = va_arg(*args, SV*); | |
3641 | } | |
3642 | } | |
81885997 | 3643 | { |
6867be6d AL |
3644 | const line_t ocopline = PL_copline; |
3645 | COP * const ocurcop = PL_curcop; | |
3646 | const int oexpect = PL_expect; | |
81885997 GS |
3647 | |
3648 | utilize(!(flags & PERL_LOADMOD_DENY), start_subparse(FALSE, 0), | |
3649 | veop, modname, imop); | |
3650 | PL_expect = oexpect; | |
3651 | PL_copline = ocopline; | |
834a3ffa | 3652 | PL_curcop = ocurcop; |
81885997 | 3653 | } |
e4783991 GS |
3654 | } |
3655 | ||
79072805 | 3656 | OP * |
850e8516 | 3657 | Perl_dofile(pTHX_ OP *term, I32 force_builtin) |
78ca652e | 3658 | { |
97aff369 | 3659 | dVAR; |
78ca652e | 3660 | OP *doop; |
a0714e2c | 3661 | GV *gv = NULL; |
78ca652e | 3662 | |
850e8516 | 3663 | if (!force_builtin) { |
fafc274c | 3664 | gv = gv_fetchpvs("do", GV_NOTQUAL, SVt_PVCV); |
850e8516 | 3665 | if (!(gv && GvCVu(gv) && GvIMPORTED_CV(gv))) { |
a4fc7abc | 3666 | GV * const * const gvp = (GV**)hv_fetchs(PL_globalstash, "do", FALSE); |
a0714e2c | 3667 | gv = gvp ? *gvp : NULL; |
850e8516 RGS |
3668 | } |
3669 | } | |
78ca652e | 3670 | |
b9f751c0 | 3671 | if (gv && GvCVu(gv) && GvIMPORTED_CV(gv)) { |
78ca652e GS |
3672 | doop = ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, |
3673 | append_elem(OP_LIST, term, | |
3674 | scalar(newUNOP(OP_RV2CV, 0, | |
d4c19fe8 | 3675 | newGVOP(OP_GV, 0, gv)))))); |
78ca652e GS |
3676 | } |
3677 | else { | |
3678 | doop = newUNOP(OP_DOFILE, 0, scalar(term)); | |
3679 | } | |
3680 | return doop; | |
3681 | } | |
3682 | ||
3683 | OP * | |
864dbfa3 | 3684 | Perl_newSLICEOP(pTHX_ I32 flags, OP *subscript, OP *listval) |
79072805 LW |
3685 | { |
3686 | return newBINOP(OP_LSLICE, flags, | |
8990e307 LW |
3687 | list(force_list(subscript)), |
3688 | list(force_list(listval)) ); | |
79072805 LW |
3689 | } |
3690 | ||
76e3520e | 3691 | STATIC I32 |
504618e9 | 3692 | S_is_list_assignment(pTHX_ register const OP *o) |
79072805 | 3693 | { |
1496a290 AL |
3694 | unsigned type; |
3695 | U8 flags; | |
3696 | ||
11343788 | 3697 | if (!o) |
79072805 LW |
3698 | return TRUE; |
3699 | ||
1496a290 | 3700 | if ((o->op_type == OP_NULL) && (o->op_flags & OPf_KIDS)) |
11343788 | 3701 | o = cUNOPo->op_first; |
79072805 | 3702 | |
1496a290 AL |
3703 | flags = o->op_flags; |
3704 | type = o->op_type; | |
3705 | if (type == OP_COND_EXPR) { | |
504618e9 AL |
3706 | const I32 t = is_list_assignment(cLOGOPo->op_first->op_sibling); |
3707 | const I32 f = is_list_assignment(cLOGOPo->op_first->op_sibling->op_sibling); | |
79072805 LW |
3708 | |
3709 | if (t && f) | |
3710 | return TRUE; | |
3711 | if (t || f) | |
3712 | yyerror("Assignment to both a list and a scalar"); | |
3713 | return FALSE; | |
3714 | } | |
3715 | ||
1496a290 AL |
3716 | if (type == OP_LIST && |
3717 | (flags & OPf_WANT) == OPf_WANT_SCALAR && | |
95f0a2f1 SB |
3718 | o->op_private & OPpLVAL_INTRO) |
3719 | return FALSE; | |
3720 | ||
1496a290 AL |
3721 | if (type == OP_LIST || flags & OPf_PARENS || |
3722 | type == OP_RV2AV || type == OP_RV2HV || | |
3723 | type == OP_ASLICE || type == OP_HSLICE) | |
79072805 LW |
3724 | return TRUE; |
3725 | ||
1496a290 | 3726 | if (type == OP_PADAV || type == OP_PADHV) |
93a17b20 LW |
3727 | return TRUE; |
3728 | ||
1496a290 | 3729 | if (type == OP_RV2SV) |
79072805 LW |
3730 | return FALSE; |
3731 | ||
3732 | return FALSE; | |
3733 | } | |
3734 | ||
3735 | OP * | |
864dbfa3 | 3736 | Perl_newASSIGNOP(pTHX_ I32 flags, OP *left, I32 optype, OP *right) |
79072805 | 3737 | { |
97aff369 | 3738 | dVAR; |
11343788 | 3739 | OP *o; |
79072805 | 3740 | |
a0d0e21e | 3741 | if (optype) { |
c963b151 | 3742 | if (optype == OP_ANDASSIGN || optype == OP_ORASSIGN || optype == OP_DORASSIGN) { |
a0d0e21e LW |
3743 | return newLOGOP(optype, 0, |
3744 | mod(scalar(left), optype), | |
3745 | newUNOP(OP_SASSIGN, 0, scalar(right))); | |
3746 | } | |
3747 | else { | |
3748 | return newBINOP(optype, OPf_STACKED, | |
3749 | mod(scalar(left), optype), scalar(right)); | |
3750 | } | |
3751 | } | |
3752 | ||
504618e9 | 3753 | if (is_list_assignment(left)) { |
10c8fecd GS |
3754 | OP *curop; |
3755 | ||
3280af22 | 3756 | PL_modcount = 0; |
dbfe47cf RD |
3757 | /* Grandfathering $[ assignment here. Bletch.*/ |
3758 | /* Only simple assignments like C<< ($[) = 1 >> are allowed */ | |
3759 | PL_eval_start = (left->op_type == OP_CONST) ? right : 0; | |
463ee0b2 | 3760 | left = mod(left, OP_AASSIGN); |
3280af22 NIS |
3761 | if (PL_eval_start) |
3762 | PL_eval_start = 0; | |
dbfe47cf | 3763 | else if (left->op_type == OP_CONST) { |
eb8433b7 | 3764 | /* FIXME for MAD */ |
dbfe47cf RD |
3765 | /* Result of assignment is always 1 (or we'd be dead already) */ |
3766 | return newSVOP(OP_CONST, 0, newSViv(1)); | |
a0d0e21e | 3767 | } |
10c8fecd GS |
3768 | curop = list(force_list(left)); |
3769 | o = newBINOP(OP_AASSIGN, flags, list(force_list(right)), curop); | |
eb160463 | 3770 | o->op_private = (U8)(0 | (flags >> 8)); |
dd2155a4 DM |
3771 | |
3772 | /* PL_generation sorcery: | |
3773 | * an assignment like ($a,$b) = ($c,$d) is easier than | |
3774 | * ($a,$b) = ($c,$a), since there is no need for temporary vars. | |
3775 | * To detect whether there are common vars, the global var | |
3776 | * PL_generation is incremented for each assign op we compile. | |
3777 | * Then, while compiling the assign op, we run through all the | |
3778 | * variables on both sides of the assignment, setting a spare slot | |
3779 | * in each of them to PL_generation. If any of them already have | |
3780 | * that value, we know we've got commonality. We could use a | |
3781 | * single bit marker, but then we'd have to make 2 passes, first | |
3782 | * to clear the flag, then to test and set it. To find somewhere | |
3783 | * to store these values, evil chicanery is done with SvCUR(). | |
3784 | */ | |
3785 | ||
461824dc | 3786 | { |
11343788 | 3787 | OP *lastop = o; |
3280af22 | 3788 | PL_generation++; |
11343788 | 3789 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
22c35a8c | 3790 | if (PL_opargs[curop->op_type] & OA_DANGEROUS) { |
79072805 | 3791 | if (curop->op_type == OP_GV) { |
638eceb6 | 3792 | GV *gv = cGVOPx_gv(curop); |
169d2d72 NC |
3793 | if (gv == PL_defgv |
3794 | || (int)GvASSIGN_GENERATION(gv) == PL_generation) | |
79072805 | 3795 | break; |
169d2d72 | 3796 | GvASSIGN_GENERATION_set(gv, PL_generation); |
79072805 | 3797 | } |
748a9306 LW |
3798 | else if (curop->op_type == OP_PADSV || |
3799 | curop->op_type == OP_PADAV || | |
3800 | curop->op_type == OP_PADHV || | |
dd2155a4 DM |
3801 | curop->op_type == OP_PADANY) |
3802 | { | |
3803 | if (PAD_COMPNAME_GEN(curop->op_targ) | |
92251a1e | 3804 | == (STRLEN)PL_generation) |
748a9306 | 3805 | break; |
b162af07 | 3806 | PAD_COMPNAME_GEN_set(curop->op_targ, PL_generation); |
dd2155a4 | 3807 | |
748a9306 | 3808 | } |
79072805 LW |
3809 | else if (curop->op_type == OP_RV2CV) |
3810 | break; | |
3811 | else if (curop->op_type == OP_RV2SV || | |
3812 | curop->op_type == OP_RV2AV || | |
3813 | curop->op_type == OP_RV2HV || | |
3814 | curop->op_type == OP_RV2GV) { | |
3815 | if (lastop->op_type != OP_GV) /* funny deref? */ | |
3816 | break; | |
3817 | } | |
1167e5da SM |
3818 | else if (curop->op_type == OP_PUSHRE) { |
3819 | if (((PMOP*)curop)->op_pmreplroot) { | |
b3f5893f | 3820 | #ifdef USE_ITHREADS |
dd2155a4 DM |
3821 | GV *gv = (GV*)PAD_SVl(INT2PTR(PADOFFSET, |
3822 | ((PMOP*)curop)->op_pmreplroot)); | |
b3f5893f | 3823 | #else |
1167e5da | 3824 | GV *gv = (GV*)((PMOP*)curop)->op_pmreplroot; |
b3f5893f | 3825 | #endif |
169d2d72 NC |
3826 | if (gv == PL_defgv |
3827 | || (int)GvASSIGN_GENERATION(gv) == PL_generation) | |
1167e5da | 3828 | break; |
169d2d72 NC |
3829 | GvASSIGN_GENERATION_set(gv, PL_generation); |
3830 | GvASSIGN_GENERATION_set(gv, PL_generation); | |
b2ffa427 | 3831 | } |
1167e5da | 3832 | } |
79072805 LW |
3833 | else |
3834 | break; | |
3835 | } | |
3836 | lastop = curop; | |
3837 | } | |
11343788 | 3838 | if (curop != o) |
10c8fecd | 3839 | o->op_private |= OPpASSIGN_COMMON; |
461824dc | 3840 | } |
9fdc7570 RGS |
3841 | |
3842 | if ( ((left->op_private & OPpLVAL_INTRO) || ckWARN(WARN_MISC)) | |
3843 | && (left->op_type == OP_LIST | |
3844 | || (left->op_type == OP_NULL && left->op_targ == OP_LIST))) | |
3845 | { | |
3846 | OP* lop = ((LISTOP*)left)->op_first; | |
3847 | while (lop) { | |
3848 | if (lop->op_type == OP_PADSV || | |
3849 | lop->op_type == OP_PADAV || | |
3850 | lop->op_type == OP_PADHV || | |
3851 | lop->op_type == OP_PADANY) | |
3852 | { | |
3853 | if (lop->op_private & OPpPAD_STATE) { | |
3854 | if (left->op_private & OPpLVAL_INTRO) { | |
3855 | o->op_private |= OPpASSIGN_STATE; | |
3856 | /* hijacking PADSTALE for uninitialized state variables */ | |
3857 | SvPADSTALE_on(PAD_SVl(lop->op_targ)); | |
3858 | } | |
3859 | else { /* we already checked for WARN_MISC before */ | |
3860 | Perl_warner(aTHX_ packWARN(WARN_MISC), "State variable %s will be reinitialized", | |
3861 | PAD_COMPNAME_PV(lop->op_targ)); | |
3862 | } | |
3863 | } | |
3864 | } | |
3865 | lop = lop->op_sibling; | |
3866 | } | |
3867 | } | |
3868 | ||
c07a80fd | 3869 | if (right && right->op_type == OP_SPLIT) { |
1496a290 AL |
3870 | OP* tmpop = ((LISTOP*)right)->op_first; |
3871 | if (tmpop && (tmpop->op_type == OP_PUSHRE)) { | |
551405c4 | 3872 | PMOP * const pm = (PMOP*)tmpop; |
c07a80fd | 3873 | if (left->op_type == OP_RV2AV && |
3874 | !(left->op_private & OPpLVAL_INTRO) && | |
11343788 | 3875 | !(o->op_private & OPpASSIGN_COMMON) ) |
c07a80fd | 3876 | { |
3877 | tmpop = ((UNOP*)left)->op_first; | |
3878 | if (tmpop->op_type == OP_GV && !pm->op_pmreplroot) { | |
971a9dd3 | 3879 | #ifdef USE_ITHREADS |
ba89bb6e | 3880 | pm->op_pmreplroot = INT2PTR(OP*, cPADOPx(tmpop)->op_padix); |
971a9dd3 GS |
3881 | cPADOPx(tmpop)->op_padix = 0; /* steal it */ |
3882 | #else | |
3883 | pm->op_pmreplroot = (OP*)cSVOPx(tmpop)->op_sv; | |
a0714e2c | 3884 | cSVOPx(tmpop)->op_sv = NULL; /* steal it */ |
971a9dd3 | 3885 | #endif |
c07a80fd | 3886 | pm->op_pmflags |= PMf_ONCE; |
11343788 | 3887 | tmpop = cUNOPo->op_first; /* to list (nulled) */ |
c07a80fd | 3888 | tmpop = ((UNOP*)tmpop)->op_first; /* to pushmark */ |
5f66b61c | 3889 | tmpop->op_sibling = NULL; /* don't free split */ |
c07a80fd | 3890 | right->op_next = tmpop->op_next; /* fix starting loc */ |
eb8433b7 NC |
3891 | #ifdef PERL_MAD |
3892 | op_getmad(o,right,'R'); /* blow off assign */ | |
3893 | #else | |
11343788 | 3894 | op_free(o); /* blow off assign */ |
eb8433b7 | 3895 | #endif |
54310121 | 3896 | right->op_flags &= ~OPf_WANT; |
a5f75d66 | 3897 | /* "I don't know and I don't care." */ |
c07a80fd | 3898 | return right; |
3899 | } | |
3900 | } | |
3901 | else { | |
e6438c1a | 3902 | if (PL_modcount < RETURN_UNLIMITED_NUMBER && |
c07a80fd | 3903 | ((LISTOP*)right)->op_last->op_type == OP_CONST) |
3904 | { | |
3905 | SV *sv = ((SVOP*)((LISTOP*)right)->op_last)->op_sv; | |
3906 | if (SvIVX(sv) == 0) | |
3280af22 | 3907 | sv_setiv(sv, PL_modcount+1); |
c07a80fd | 3908 | } |
3909 | } | |
3910 | } | |
3911 | } | |
11343788 | 3912 | return o; |
79072805 LW |
3913 | } |
3914 | if (!right) | |
3915 | right = newOP(OP_UNDEF, 0); | |
3916 | if (right->op_type == OP_READLINE) { | |
3917 | right->op_flags |= OPf_STACKED; | |
463ee0b2 | 3918 | return newBINOP(OP_NULL, flags, mod(scalar(left), OP_SASSIGN), scalar(right)); |
79072805 | 3919 | } |
a0d0e21e | 3920 | else { |
3280af22 | 3921 | PL_eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ |
11343788 | 3922 | o = newBINOP(OP_SASSIGN, flags, |
463ee0b2 | 3923 | scalar(right), mod(scalar(left), OP_SASSIGN) ); |
3280af22 NIS |
3924 | if (PL_eval_start) |
3925 | PL_eval_start = 0; | |
748a9306 | 3926 | else { |
eb8433b7 | 3927 | /* FIXME for MAD */ |
3b6547f5 | 3928 | op_free(o); |
fc15ae8f | 3929 | o = newSVOP(OP_CONST, 0, newSViv(CopARYBASE_get(&PL_compiling))); |
2e0ae2d3 | 3930 | o->op_private |= OPpCONST_ARYBASE; |
a0d0e21e LW |
3931 | } |
3932 | } | |
11343788 | 3933 | return o; |
79072805 LW |
3934 | } |
3935 | ||
3936 | OP * | |
864dbfa3 | 3937 | Perl_newSTATEOP(pTHX_ I32 flags, char *label, OP *o) |
79072805 | 3938 | { |
27da23d5 | 3939 | dVAR; |
e1ec3a88 | 3940 | const U32 seq = intro_my(); |
79072805 LW |
3941 | register COP *cop; |
3942 | ||
b7dc083c | 3943 | NewOp(1101, cop, 1, COP); |
57843af0 | 3944 | if (PERLDB_LINE && CopLINE(PL_curcop) && PL_curstash != PL_debstash) { |
8990e307 | 3945 | cop->op_type = OP_DBSTATE; |
22c35a8c | 3946 | cop->op_ppaddr = PL_ppaddr[ OP_DBSTATE ]; |
8990e307 LW |
3947 | } |
3948 | else { | |
3949 | cop->op_type = OP_NEXTSTATE; | |
22c35a8c | 3950 | cop->op_ppaddr = PL_ppaddr[ OP_NEXTSTATE ]; |
8990e307 | 3951 | } |
eb160463 | 3952 | cop->op_flags = (U8)flags; |
623e6609 | 3953 | CopHINTS_set(cop, PL_hints); |
ff0cee69 | 3954 | #ifdef NATIVE_HINTS |
3955 | cop->op_private |= NATIVE_HINTS; | |
3956 | #endif | |
623e6609 | 3957 | CopHINTS_set(&PL_compiling, CopHINTS_get(cop)); |
79072805 LW |
3958 | cop->op_next = (OP*)cop; |
3959 | ||
463ee0b2 LW |
3960 | if (label) { |
3961 | cop->cop_label = label; | |
3280af22 | 3962 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 3963 | } |
bbce6d69 | 3964 | cop->cop_seq = seq; |
7b0bddfa | 3965 | /* CopARYBASE is now "virtual", in that it's stored as a flag bit in |
c28fe1ec NC |
3966 | CopHINTS and a possible value in cop_hints_hash, so no need to copy it. |
3967 | */ | |
72dc9ed5 | 3968 | cop->cop_warnings = DUP_WARNINGS(PL_curcop->cop_warnings); |
c28fe1ec NC |
3969 | cop->cop_hints_hash = PL_curcop->cop_hints_hash; |
3970 | if (cop->cop_hints_hash) { | |
cbb1fbea | 3971 | HINTS_REFCNT_LOCK; |
c28fe1ec | 3972 | cop->cop_hints_hash->refcounted_he_refcnt++; |
cbb1fbea | 3973 | HINTS_REFCNT_UNLOCK; |
b3ca2e83 | 3974 | } |
79072805 | 3975 | |
3280af22 | 3976 | if (PL_copline == NOLINE) |
57843af0 | 3977 | CopLINE_set(cop, CopLINE(PL_curcop)); |
79072805 | 3978 | else { |
57843af0 | 3979 | CopLINE_set(cop, PL_copline); |
3280af22 | 3980 | PL_copline = NOLINE; |
79072805 | 3981 | } |
57843af0 | 3982 | #ifdef USE_ITHREADS |
f4dd75d9 | 3983 | CopFILE_set(cop, CopFILE(PL_curcop)); /* XXX share in a pvtable? */ |
57843af0 | 3984 | #else |
f4dd75d9 | 3985 | CopFILEGV_set(cop, CopFILEGV(PL_curcop)); |
57843af0 | 3986 | #endif |
11faa288 | 3987 | CopSTASH_set(cop, PL_curstash); |
79072805 | 3988 | |
3280af22 | 3989 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
fe8247eb | 3990 | SV * const * const svp = av_fetch(CopFILEAVx(PL_curcop), (I32)CopLINE(cop), FALSE); |
2d03de9c AL |
3991 | if (svp && *svp != &PL_sv_undef ) { |
3992 | (void)SvIOK_on(*svp); | |
45977657 | 3993 | SvIV_set(*svp, PTR2IV(cop)); |
1eb1540c | 3994 | } |
93a17b20 LW |
3995 | } |
3996 | ||
722969e2 | 3997 | return prepend_elem(OP_LINESEQ, (OP*)cop, o); |
79072805 LW |
3998 | } |
3999 | ||
bbce6d69 | 4000 | |
79072805 | 4001 | OP * |
864dbfa3 | 4002 | Perl_newLOGOP(pTHX_ I32 type, I32 flags, OP *first, OP *other) |
79072805 | 4003 | { |
27da23d5 | 4004 | dVAR; |
883ffac3 CS |
4005 | return new_logop(type, flags, &first, &other); |
4006 | } | |
4007 | ||
3bd495df | 4008 | STATIC OP * |
cea2e8a9 | 4009 | S_new_logop(pTHX_ I32 type, I32 flags, OP** firstp, OP** otherp) |
883ffac3 | 4010 | { |
27da23d5 | 4011 | dVAR; |
79072805 | 4012 | LOGOP *logop; |
11343788 | 4013 | OP *o; |
883ffac3 | 4014 | OP *first = *firstp; |
b22e6366 | 4015 | OP * const other = *otherp; |
79072805 | 4016 | |
a0d0e21e LW |
4017 | if (type == OP_XOR) /* Not short circuit, but here by precedence. */ |
4018 | return newBINOP(type, flags, scalar(first), scalar(other)); | |
4019 | ||
8990e307 | 4020 | scalarboolean(first); |
79072805 | 4021 | /* optimize "!a && b" to "a || b", and "!a || b" to "a && b" */ |
68726e16 NC |
4022 | if (first->op_type == OP_NOT |
4023 | && (first->op_flags & OPf_SPECIAL) | |
4024 | && (first->op_flags & OPf_KIDS)) { | |
79072805 LW |
4025 | if (type == OP_AND || type == OP_OR) { |
4026 | if (type == OP_AND) | |
4027 | type = OP_OR; | |
4028 | else | |
4029 | type = OP_AND; | |
11343788 | 4030 | o = first; |
883ffac3 | 4031 | first = *firstp = cUNOPo->op_first; |
11343788 MB |
4032 | if (o->op_next) |
4033 | first->op_next = o->op_next; | |
5f66b61c | 4034 | cUNOPo->op_first = NULL; |
eb8433b7 NC |
4035 | #ifdef PERL_MAD |
4036 | op_getmad(o,first,'O'); | |
4037 | #else | |
11343788 | 4038 | op_free(o); |
eb8433b7 | 4039 | #endif |
79072805 LW |
4040 | } |
4041 | } | |
4042 | if (first->op_type == OP_CONST) { | |
39a440a3 DM |
4043 | if (first->op_private & OPpCONST_STRICT) |
4044 | no_bareword_allowed(first); | |
041457d9 | 4045 | else if ((first->op_private & OPpCONST_BARE) && ckWARN(WARN_BAREWORD)) |
989dfb19 | 4046 | Perl_warner(aTHX_ packWARN(WARN_BAREWORD), "Bareword found in conditional"); |
75cc09e4 MHM |
4047 | if ((type == OP_AND && SvTRUE(((SVOP*)first)->op_sv)) || |
4048 | (type == OP_OR && !SvTRUE(((SVOP*)first)->op_sv)) || | |
4049 | (type == OP_DOR && !SvOK(((SVOP*)first)->op_sv))) { | |
5f66b61c | 4050 | *firstp = NULL; |
d6fee5c7 DM |
4051 | if (other->op_type == OP_CONST) |
4052 | other->op_private |= OPpCONST_SHORTCIRCUIT; | |
eb8433b7 NC |
4053 | if (PL_madskills) { |
4054 | OP *newop = newUNOP(OP_NULL, 0, other); | |
4055 | op_getmad(first, newop, '1'); | |
4056 | newop->op_targ = type; /* set "was" field */ | |
4057 | return newop; | |
4058 | } | |
4059 | op_free(first); | |
79072805 LW |
4060 | return other; |
4061 | } | |
4062 | else { | |
7921d0f2 | 4063 | /* check for C<my $x if 0>, or C<my($x,$y) if 0> */ |
6867be6d | 4064 | const OP *o2 = other; |
7921d0f2 DM |
4065 | if ( ! (o2->op_type == OP_LIST |
4066 | && (( o2 = cUNOPx(o2)->op_first)) | |
4067 | && o2->op_type == OP_PUSHMARK | |
4068 | && (( o2 = o2->op_sibling)) ) | |
4069 | ) | |
4070 | o2 = other; | |
4071 | if ((o2->op_type == OP_PADSV || o2->op_type == OP_PADAV | |
4072 | || o2->op_type == OP_PADHV) | |
4073 | && o2->op_private & OPpLVAL_INTRO | |
4074 | && ckWARN(WARN_DEPRECATED)) | |
4075 | { | |
4076 | Perl_warner(aTHX_ packWARN(WARN_DEPRECATED), | |
4077 | "Deprecated use of my() in false conditional"); | |
4078 | } | |
4079 | ||
5f66b61c | 4080 | *otherp = NULL; |
d6fee5c7 DM |
4081 | if (first->op_type == OP_CONST) |
4082 | first->op_private |= OPpCONST_SHORTCIRCUIT; | |
eb8433b7 NC |
4083 | if (PL_madskills) { |
4084 | first = newUNOP(OP_NULL, 0, first); | |
4085 | op_getmad(other, first, '2'); | |
4086 | first->op_targ = type; /* set "was" field */ | |
4087 | } | |
4088 | else | |
4089 | op_free(other); | |
79072805 LW |
4090 | return first; |
4091 | } | |
4092 | } | |
041457d9 DM |
4093 | else if ((first->op_flags & OPf_KIDS) && type != OP_DOR |
4094 | && ckWARN(WARN_MISC)) /* [#24076] Don't warn for <FH> err FOO. */ | |
59e10468 | 4095 | { |
b22e6366 AL |
4096 | const OP * const k1 = ((UNOP*)first)->op_first; |
4097 | const OP * const k2 = k1->op_sibling; | |
a6006777 | 4098 | OPCODE warnop = 0; |
4099 | switch (first->op_type) | |
4100 | { | |
4101 | case OP_NULL: | |
4102 | if (k2 && k2->op_type == OP_READLINE | |
4103 | && (k2->op_flags & OPf_STACKED) | |
1c846c1f | 4104 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
72b16652 | 4105 | { |
a6006777 | 4106 | warnop = k2->op_type; |
72b16652 | 4107 | } |
a6006777 | 4108 | break; |
4109 | ||
4110 | case OP_SASSIGN: | |
68dc0745 | 4111 | if (k1->op_type == OP_READDIR |
4112 | || k1->op_type == OP_GLOB | |
72b16652 | 4113 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) |
68dc0745 | 4114 | || k1->op_type == OP_EACH) |
72b16652 GS |
4115 | { |
4116 | warnop = ((k1->op_type == OP_NULL) | |
eb160463 | 4117 | ? (OPCODE)k1->op_targ : k1->op_type); |
72b16652 | 4118 | } |
a6006777 | 4119 | break; |
4120 | } | |
8ebc5c01 | 4121 | if (warnop) { |
6867be6d | 4122 | const line_t oldline = CopLINE(PL_curcop); |
57843af0 | 4123 | CopLINE_set(PL_curcop, PL_copline); |
9014280d | 4124 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
599cee73 | 4125 | "Value of %s%s can be \"0\"; test with defined()", |
22c35a8c | 4126 | PL_op_desc[warnop], |
68dc0745 | 4127 | ((warnop == OP_READLINE || warnop == OP_GLOB) |
4128 | ? " construct" : "() operator")); | |
57843af0 | 4129 | CopLINE_set(PL_curcop, oldline); |
8ebc5c01 | 4130 | } |
a6006777 | 4131 | } |
79072805 LW |
4132 | |
4133 | if (!other) | |
4134 | return first; | |
4135 | ||
c963b151 | 4136 | if (type == OP_ANDASSIGN || type == OP_ORASSIGN || type == OP_DORASSIGN) |
a0d0e21e LW |
4137 | other->op_private |= OPpASSIGN_BACKWARDS; /* other is an OP_SASSIGN */ |
4138 | ||
b7dc083c | 4139 | NewOp(1101, logop, 1, LOGOP); |
79072805 | 4140 | |
eb160463 | 4141 | logop->op_type = (OPCODE)type; |
22c35a8c | 4142 | logop->op_ppaddr = PL_ppaddr[type]; |
79072805 | 4143 | logop->op_first = first; |
585ec06d | 4144 | logop->op_flags = (U8)(flags | OPf_KIDS); |
79072805 | 4145 | logop->op_other = LINKLIST(other); |
eb160463 | 4146 | logop->op_private = (U8)(1 | (flags >> 8)); |
79072805 LW |
4147 | |
4148 | /* establish postfix order */ | |
4149 | logop->op_next = LINKLIST(first); | |
4150 | first->op_next = (OP*)logop; | |
4151 | first->op_sibling = other; | |
4152 | ||
463d09e6 RGS |
4153 | CHECKOP(type,logop); |
4154 | ||
11343788 MB |
4155 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
4156 | other->op_next = o; | |
79072805 | 4157 | |
11343788 | 4158 | return o; |
79072805 LW |
4159 | } |
4160 | ||
4161 | OP * | |
864dbfa3 | 4162 | Perl_newCONDOP(pTHX_ I32 flags, OP *first, OP *trueop, OP *falseop) |
79072805 | 4163 | { |
27da23d5 | 4164 | dVAR; |
1a67a97c SM |
4165 | LOGOP *logop; |
4166 | OP *start; | |
11343788 | 4167 | OP *o; |
79072805 | 4168 | |
b1cb66bf | 4169 | if (!falseop) |
4170 | return newLOGOP(OP_AND, 0, first, trueop); | |
4171 | if (!trueop) | |
4172 | return newLOGOP(OP_OR, 0, first, falseop); | |
79072805 | 4173 | |
8990e307 | 4174 | scalarboolean(first); |
79072805 | 4175 | if (first->op_type == OP_CONST) { |
2bc6235c | 4176 | if (first->op_private & OPpCONST_BARE && |
b22e6366 AL |
4177 | first->op_private & OPpCONST_STRICT) { |
4178 | no_bareword_allowed(first); | |
4179 | } | |
79072805 | 4180 | if (SvTRUE(((SVOP*)first)->op_sv)) { |
eb8433b7 NC |
4181 | #ifdef PERL_MAD |
4182 | if (PL_madskills) { | |
4183 | trueop = newUNOP(OP_NULL, 0, trueop); | |
4184 | op_getmad(first,trueop,'C'); | |
4185 | op_getmad(falseop,trueop,'e'); | |
4186 | } | |
4187 | /* FIXME for MAD - should there be an ELSE here? */ | |
4188 | #else | |
79072805 | 4189 | op_free(first); |
b1cb66bf | 4190 | op_free(falseop); |
eb8433b7 | 4191 | #endif |
b1cb66bf | 4192 | return trueop; |
79072805 LW |
4193 | } |
4194 | else { | |
eb8433b7 NC |
4195 | #ifdef PERL_MAD |
4196 | if (PL_madskills) { | |
4197 | falseop = newUNOP(OP_NULL, 0, falseop); | |
4198 | op_getmad(first,falseop,'C'); | |
4199 | op_getmad(trueop,falseop,'t'); | |
4200 | } | |
4201 | /* FIXME for MAD - should there be an ELSE here? */ | |
4202 | #else | |
79072805 | 4203 | op_free(first); |
b1cb66bf | 4204 | op_free(trueop); |
eb8433b7 | 4205 | #endif |
b1cb66bf | 4206 | return falseop; |
79072805 LW |
4207 | } |
4208 | } | |
1a67a97c SM |
4209 | NewOp(1101, logop, 1, LOGOP); |
4210 | logop->op_type = OP_COND_EXPR; | |
4211 | logop->op_ppaddr = PL_ppaddr[OP_COND_EXPR]; | |
4212 | logop->op_first = first; | |
585ec06d | 4213 | logop->op_flags = (U8)(flags | OPf_KIDS); |
eb160463 | 4214 | logop->op_private = (U8)(1 | (flags >> 8)); |
1a67a97c SM |
4215 | logop->op_other = LINKLIST(trueop); |
4216 | logop->op_next = LINKLIST(falseop); | |
79072805 | 4217 | |
463d09e6 RGS |
4218 | CHECKOP(OP_COND_EXPR, /* that's logop->op_type */ |
4219 | logop); | |
79072805 LW |
4220 | |
4221 | /* establish postfix order */ | |
1a67a97c SM |
4222 | start = LINKLIST(first); |
4223 | first->op_next = (OP*)logop; | |
79072805 | 4224 | |
b1cb66bf | 4225 | first->op_sibling = trueop; |
4226 | trueop->op_sibling = falseop; | |
1a67a97c | 4227 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
79072805 | 4228 | |
1a67a97c | 4229 | trueop->op_next = falseop->op_next = o; |
79072805 | 4230 | |
1a67a97c | 4231 | o->op_next = start; |
11343788 | 4232 | return o; |
79072805 LW |
4233 | } |
4234 | ||
4235 | OP * | |
864dbfa3 | 4236 | Perl_newRANGE(pTHX_ I32 flags, OP *left, OP *right) |
79072805 | 4237 | { |
27da23d5 | 4238 | dVAR; |
1a67a97c | 4239 | LOGOP *range; |
79072805 LW |
4240 | OP *flip; |
4241 | OP *flop; | |
1a67a97c | 4242 | OP *leftstart; |
11343788 | 4243 | OP *o; |
79072805 | 4244 | |
1a67a97c | 4245 | NewOp(1101, range, 1, LOGOP); |
79072805 | 4246 | |
1a67a97c SM |
4247 | range->op_type = OP_RANGE; |
4248 | range->op_ppaddr = PL_ppaddr[OP_RANGE]; | |
4249 | range->op_first = left; | |
4250 | range->op_flags = OPf_KIDS; | |
4251 | leftstart = LINKLIST(left); | |
4252 | range->op_other = LINKLIST(right); | |
eb160463 | 4253 | range->op_private = (U8)(1 | (flags >> 8)); |
79072805 LW |
4254 | |
4255 | left->op_sibling = right; | |
4256 | ||
1a67a97c SM |
4257 | range->op_next = (OP*)range; |
4258 | flip = newUNOP(OP_FLIP, flags, (OP*)range); | |
79072805 | 4259 | flop = newUNOP(OP_FLOP, 0, flip); |
11343788 | 4260 | o = newUNOP(OP_NULL, 0, flop); |
79072805 | 4261 | linklist(flop); |
1a67a97c | 4262 | range->op_next = leftstart; |
79072805 LW |
4263 | |
4264 | left->op_next = flip; | |
4265 | right->op_next = flop; | |
4266 | ||
1a67a97c SM |
4267 | range->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
4268 | sv_upgrade(PAD_SV(range->op_targ), SVt_PVNV); | |
ed6116ce | 4269 | flip->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 LW |
4270 | sv_upgrade(PAD_SV(flip->op_targ), SVt_PVNV); |
4271 | ||
4272 | flip->op_private = left->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
4273 | flop->op_private = right->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
4274 | ||
11343788 | 4275 | flip->op_next = o; |
79072805 | 4276 | if (!flip->op_private || !flop->op_private) |
11343788 | 4277 | linklist(o); /* blow off optimizer unless constant */ |
79072805 | 4278 | |
11343788 | 4279 | return o; |
79072805 LW |
4280 | } |
4281 | ||
4282 | OP * | |
864dbfa3 | 4283 | Perl_newLOOPOP(pTHX_ I32 flags, I32 debuggable, OP *expr, OP *block) |
79072805 | 4284 | { |
97aff369 | 4285 | dVAR; |
463ee0b2 | 4286 | OP* listop; |
11343788 | 4287 | OP* o; |
73d840c0 | 4288 | const bool once = block && block->op_flags & OPf_SPECIAL && |
a0d0e21e | 4289 | (block->op_type == OP_ENTERSUB || block->op_type == OP_NULL); |
46c461b5 AL |
4290 | |
4291 | PERL_UNUSED_ARG(debuggable); | |
93a17b20 | 4292 | |
463ee0b2 LW |
4293 | if (expr) { |
4294 | if (once && expr->op_type == OP_CONST && !SvTRUE(((SVOP*)expr)->op_sv)) | |
4295 | return block; /* do {} while 0 does once */ | |
fb73857a | 4296 | if (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB |
4297 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB)) { | |
774d564b | 4298 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 4299 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 | 4300 | } else if (expr->op_flags & OPf_KIDS) { |
46c461b5 AL |
4301 | const OP * const k1 = ((UNOP*)expr)->op_first; |
4302 | const OP * const k2 = k1 ? k1->op_sibling : NULL; | |
55d729e4 | 4303 | switch (expr->op_type) { |
1c846c1f | 4304 | case OP_NULL: |
55d729e4 GS |
4305 | if (k2 && k2->op_type == OP_READLINE |
4306 | && (k2->op_flags & OPf_STACKED) | |
1c846c1f | 4307 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
55d729e4 | 4308 | expr = newUNOP(OP_DEFINED, 0, expr); |
1c846c1f | 4309 | break; |
55d729e4 GS |
4310 | |
4311 | case OP_SASSIGN: | |
06dc7ac6 | 4312 | if (k1 && (k1->op_type == OP_READDIR |
55d729e4 | 4313 | || k1->op_type == OP_GLOB |
6531c3e6 | 4314 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) |
06dc7ac6 | 4315 | || k1->op_type == OP_EACH)) |
55d729e4 GS |
4316 | expr = newUNOP(OP_DEFINED, 0, expr); |
4317 | break; | |
4318 | } | |
774d564b | 4319 | } |
463ee0b2 | 4320 | } |
93a17b20 | 4321 | |
e1548254 RGS |
4322 | /* if block is null, the next append_elem() would put UNSTACK, a scalar |
4323 | * op, in listop. This is wrong. [perl #27024] */ | |
4324 | if (!block) | |
4325 | block = newOP(OP_NULL, 0); | |
8990e307 | 4326 | listop = append_elem(OP_LINESEQ, block, newOP(OP_UNSTACK, 0)); |
883ffac3 | 4327 | o = new_logop(OP_AND, 0, &expr, &listop); |
463ee0b2 | 4328 | |
883ffac3 CS |
4329 | if (listop) |
4330 | ((LISTOP*)listop)->op_last->op_next = LINKLIST(o); | |
79072805 | 4331 | |
11343788 MB |
4332 | if (once && o != listop) |
4333 | o->op_next = ((LOGOP*)cUNOPo->op_first)->op_other; | |
79072805 | 4334 | |
11343788 MB |
4335 | if (o == listop) |
4336 | o = newUNOP(OP_NULL, 0, o); /* or do {} while 1 loses outer block */ | |
748a9306 | 4337 | |
11343788 MB |
4338 | o->op_flags |= flags; |
4339 | o = scope(o); | |
4340 | o->op_flags |= OPf_SPECIAL; /* suppress POPBLOCK curpm restoration*/ | |
4341 | return o; | |
79072805 LW |
4342 | } |
4343 | ||
4344 | OP * | |
a034e688 DM |
4345 | Perl_newWHILEOP(pTHX_ I32 flags, I32 debuggable, LOOP *loop, I32 |
4346 | whileline, OP *expr, OP *block, OP *cont, I32 has_my) | |
79072805 | 4347 | { |
27da23d5 | 4348 | dVAR; |
79072805 | 4349 | OP *redo; |
c445ea15 | 4350 | OP *next = NULL; |
79072805 | 4351 | OP *listop; |
11343788 | 4352 | OP *o; |
1ba6ee2b | 4353 | U8 loopflags = 0; |
46c461b5 AL |
4354 | |
4355 | PERL_UNUSED_ARG(debuggable); | |
79072805 | 4356 | |
2d03de9c AL |
4357 | if (expr) { |
4358 | if (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB | |
4359 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB)) { | |
4360 | expr = newUNOP(OP_DEFINED, 0, | |
4361 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); | |
4362 | } else if (expr->op_flags & OPf_KIDS) { | |
4363 | const OP * const k1 = ((UNOP*)expr)->op_first; | |
4364 | const OP * const k2 = (k1) ? k1->op_sibling : NULL; | |
4365 | switch (expr->op_type) { | |
4366 | case OP_NULL: | |
4367 | if (k2 && k2->op_type == OP_READLINE | |
4368 | && (k2->op_flags & OPf_STACKED) | |
4369 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) | |
4370 | expr = newUNOP(OP_DEFINED, 0, expr); | |
4371 | break; | |
55d729e4 | 4372 | |
2d03de9c | 4373 | case OP_SASSIGN: |
72c8de1a | 4374 | if (k1 && (k1->op_type == OP_READDIR |
2d03de9c AL |
4375 | || k1->op_type == OP_GLOB |
4376 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) | |
72c8de1a | 4377 | || k1->op_type == OP_EACH)) |
2d03de9c AL |
4378 | expr = newUNOP(OP_DEFINED, 0, expr); |
4379 | break; | |
4380 | } | |
55d729e4 | 4381 | } |
748a9306 | 4382 | } |
79072805 LW |
4383 | |
4384 | if (!block) | |
4385 | block = newOP(OP_NULL, 0); | |
a034e688 | 4386 | else if (cont || has_my) { |
87246558 GS |
4387 | block = scope(block); |
4388 | } | |
79072805 | 4389 | |
1ba6ee2b | 4390 | if (cont) { |
79072805 | 4391 | next = LINKLIST(cont); |
1ba6ee2b | 4392 | } |
fb73857a | 4393 | if (expr) { |
551405c4 | 4394 | OP * const unstack = newOP(OP_UNSTACK, 0); |
85538317 GS |
4395 | if (!next) |
4396 | next = unstack; | |
4397 | cont = append_elem(OP_LINESEQ, cont, unstack); | |
fb73857a | 4398 | } |
79072805 | 4399 | |
ce3e5c45 | 4400 | assert(block); |
463ee0b2 | 4401 | listop = append_list(OP_LINESEQ, (LISTOP*)block, (LISTOP*)cont); |
ce3e5c45 | 4402 | assert(listop); |
79072805 LW |
4403 | redo = LINKLIST(listop); |
4404 | ||
4405 | if (expr) { | |
eb160463 | 4406 | PL_copline = (line_t)whileline; |
883ffac3 CS |
4407 | scalar(listop); |
4408 | o = new_logop(OP_AND, 0, &expr, &listop); | |
11343788 | 4409 | if (o == expr && o->op_type == OP_CONST && !SvTRUE(cSVOPo->op_sv)) { |
85e6fe83 | 4410 | op_free(expr); /* oops, it's a while (0) */ |
463ee0b2 | 4411 | op_free((OP*)loop); |
5f66b61c | 4412 | return NULL; /* listop already freed by new_logop */ |
463ee0b2 | 4413 | } |
883ffac3 | 4414 | if (listop) |
497b47a8 | 4415 | ((LISTOP*)listop)->op_last->op_next = |
883ffac3 | 4416 | (o == listop ? redo : LINKLIST(o)); |
79072805 LW |
4417 | } |
4418 | else | |
11343788 | 4419 | o = listop; |
79072805 LW |
4420 | |
4421 | if (!loop) { | |
b7dc083c | 4422 | NewOp(1101,loop,1,LOOP); |
79072805 | 4423 | loop->op_type = OP_ENTERLOOP; |
22c35a8c | 4424 | loop->op_ppaddr = PL_ppaddr[OP_ENTERLOOP]; |
79072805 LW |
4425 | loop->op_private = 0; |
4426 | loop->op_next = (OP*)loop; | |
4427 | } | |
4428 | ||
11343788 | 4429 | o = newBINOP(OP_LEAVELOOP, 0, (OP*)loop, o); |
79072805 LW |
4430 | |
4431 | loop->op_redoop = redo; | |
11343788 | 4432 | loop->op_lastop = o; |
1ba6ee2b | 4433 | o->op_private |= loopflags; |
79072805 LW |
4434 | |
4435 | if (next) | |
4436 | loop->op_nextop = next; | |
4437 | else | |
11343788 | 4438 | loop->op_nextop = o; |
79072805 | 4439 | |
11343788 MB |
4440 | o->op_flags |= flags; |
4441 | o->op_private |= (flags >> 8); | |
4442 | return o; | |
79072805 LW |
4443 | } |
4444 | ||
4445 | OP * | |
66a1b24b | 4446 | Perl_newFOROP(pTHX_ I32 flags, char *label, line_t forline, OP *sv, OP *expr, OP *block, OP *cont) |
79072805 | 4447 | { |
27da23d5 | 4448 | dVAR; |
79072805 | 4449 | LOOP *loop; |
fb73857a | 4450 | OP *wop; |
4bbc6d12 | 4451 | PADOFFSET padoff = 0; |
4633a7c4 | 4452 | I32 iterflags = 0; |
241416b8 | 4453 | I32 iterpflags = 0; |
d4c19fe8 | 4454 | OP *madsv = NULL; |
79072805 | 4455 | |
79072805 | 4456 | if (sv) { |
85e6fe83 | 4457 | if (sv->op_type == OP_RV2SV) { /* symbol table variable */ |
241416b8 | 4458 | iterpflags = sv->op_private & OPpOUR_INTRO; /* for our $x () */ |
748a9306 | 4459 | sv->op_type = OP_RV2GV; |
22c35a8c | 4460 | sv->op_ppaddr = PL_ppaddr[OP_RV2GV]; |
0d863452 RH |
4461 | if (cGVOPx_gv(cUNOPx(sv)->op_first) == PL_defgv) |
4462 | iterpflags |= OPpITER_DEF; | |
79072805 | 4463 | } |
85e6fe83 | 4464 | else if (sv->op_type == OP_PADSV) { /* private variable */ |
241416b8 | 4465 | iterpflags = sv->op_private & OPpLVAL_INTRO; /* for my $x () */ |
85e6fe83 | 4466 | padoff = sv->op_targ; |
eb8433b7 NC |
4467 | if (PL_madskills) |
4468 | madsv = sv; | |
4469 | else { | |
4470 | sv->op_targ = 0; | |
4471 | op_free(sv); | |
4472 | } | |
5f66b61c | 4473 | sv = NULL; |
85e6fe83 | 4474 | } |
54b9620d MB |
4475 | else if (sv->op_type == OP_THREADSV) { /* per-thread variable */ |
4476 | padoff = sv->op_targ; | |
eb8433b7 NC |
4477 | if (PL_madskills) |
4478 | madsv = sv; | |
4479 | else { | |
4480 | sv->op_targ = 0; | |
4481 | iterflags |= OPf_SPECIAL; | |
4482 | op_free(sv); | |
4483 | } | |
5f66b61c | 4484 | sv = NULL; |
54b9620d | 4485 | } |
79072805 | 4486 | else |
cea2e8a9 | 4487 | Perl_croak(aTHX_ "Can't use %s for loop variable", PL_op_desc[sv->op_type]); |
0d863452 RH |
4488 | if (padoff && strEQ(PAD_COMPNAME_PV(padoff), "$_")) |
4489 | iterpflags |= OPpITER_DEF; | |
79072805 LW |
4490 | } |
4491 | else { | |
9f7d9405 | 4492 | const PADOFFSET offset = pad_findmy("$_"); |
00b1698f | 4493 | if (offset == NOT_IN_PAD || PAD_COMPNAME_FLAGS_isOUR(offset)) { |
aabe9514 RGS |
4494 | sv = newGVOP(OP_GV, 0, PL_defgv); |
4495 | } | |
4496 | else { | |
4497 | padoff = offset; | |
aabe9514 | 4498 | } |
0d863452 | 4499 | iterpflags |= OPpITER_DEF; |
79072805 | 4500 | } |
5f05dabc | 4501 | if (expr->op_type == OP_RV2AV || expr->op_type == OP_PADAV) { |
89ea2908 | 4502 | expr = mod(force_list(scalar(ref(expr, OP_ITER))), OP_GREPSTART); |
4633a7c4 LW |
4503 | iterflags |= OPf_STACKED; |
4504 | } | |
89ea2908 GA |
4505 | else if (expr->op_type == OP_NULL && |
4506 | (expr->op_flags & OPf_KIDS) && | |
4507 | ((BINOP*)expr)->op_first->op_type == OP_FLOP) | |
4508 | { | |
4509 | /* Basically turn for($x..$y) into the same as for($x,$y), but we | |
4510 | * set the STACKED flag to indicate that these values are to be | |
4511 | * treated as min/max values by 'pp_iterinit'. | |
4512 | */ | |
d4c19fe8 | 4513 | const UNOP* const flip = (UNOP*)((UNOP*)((BINOP*)expr)->op_first)->op_first; |
551405c4 | 4514 | LOGOP* const range = (LOGOP*) flip->op_first; |
66a1b24b AL |
4515 | OP* const left = range->op_first; |
4516 | OP* const right = left->op_sibling; | |
5152d7c7 | 4517 | LISTOP* listop; |
89ea2908 GA |
4518 | |
4519 | range->op_flags &= ~OPf_KIDS; | |
5f66b61c | 4520 | range->op_first = NULL; |
89ea2908 | 4521 | |
5152d7c7 | 4522 | listop = (LISTOP*)newLISTOP(OP_LIST, 0, left, right); |
1a67a97c SM |
4523 | listop->op_first->op_next = range->op_next; |
4524 | left->op_next = range->op_other; | |
5152d7c7 GS |
4525 | right->op_next = (OP*)listop; |
4526 | listop->op_next = listop->op_first; | |
89ea2908 | 4527 | |
eb8433b7 NC |
4528 | #ifdef PERL_MAD |
4529 | op_getmad(expr,(OP*)listop,'O'); | |
4530 | #else | |
89ea2908 | 4531 | op_free(expr); |
eb8433b7 | 4532 | #endif |
5152d7c7 | 4533 | expr = (OP*)(listop); |
93c66552 | 4534 | op_null(expr); |
89ea2908 GA |
4535 | iterflags |= OPf_STACKED; |
4536 | } | |
4537 | else { | |
4538 | expr = mod(force_list(expr), OP_GREPSTART); | |
4539 | } | |
4540 | ||
4633a7c4 | 4541 | loop = (LOOP*)list(convert(OP_ENTERITER, iterflags, |
89ea2908 | 4542 | append_elem(OP_LIST, expr, scalar(sv)))); |
85e6fe83 | 4543 | assert(!loop->op_next); |
241416b8 | 4544 | /* for my $x () sets OPpLVAL_INTRO; |
14f338dc | 4545 | * for our $x () sets OPpOUR_INTRO */ |
c5661c80 | 4546 | loop->op_private = (U8)iterpflags; |
b7dc083c | 4547 | #ifdef PL_OP_SLAB_ALLOC |
155aba94 GS |
4548 | { |
4549 | LOOP *tmp; | |
4550 | NewOp(1234,tmp,1,LOOP); | |
bd5f3bc4 | 4551 | Copy(loop,tmp,1,LISTOP); |
238a4c30 | 4552 | FreeOp(loop); |
155aba94 GS |
4553 | loop = tmp; |
4554 | } | |
b7dc083c | 4555 | #else |
04e62e51 | 4556 | loop = PerlMemShared_realloc(loop, sizeof(LOOP)); |
1c846c1f | 4557 | #endif |
85e6fe83 | 4558 | loop->op_targ = padoff; |
a034e688 | 4559 | wop = newWHILEOP(flags, 1, loop, forline, newOP(OP_ITER, 0), block, cont, 0); |
eb8433b7 NC |
4560 | if (madsv) |
4561 | op_getmad(madsv, (OP*)loop, 'v'); | |
3280af22 | 4562 | PL_copline = forline; |
fb73857a | 4563 | return newSTATEOP(0, label, wop); |
79072805 LW |
4564 | } |
4565 | ||
8990e307 | 4566 | OP* |
864dbfa3 | 4567 | Perl_newLOOPEX(pTHX_ I32 type, OP *label) |
8990e307 | 4568 | { |
97aff369 | 4569 | dVAR; |
11343788 | 4570 | OP *o; |
2d8e6c8d | 4571 | |
8990e307 | 4572 | if (type != OP_GOTO || label->op_type == OP_CONST) { |
cdaebead MB |
4573 | /* "last()" means "last" */ |
4574 | if (label->op_type == OP_STUB && (label->op_flags & OPf_PARENS)) | |
4575 | o = newOP(type, OPf_SPECIAL); | |
4576 | else { | |
4577 | o = newPVOP(type, 0, savepv(label->op_type == OP_CONST | |
8b6b16e7 | 4578 | ? SvPVx_nolen_const(((SVOP*)label)->op_sv) |
cdaebead MB |
4579 | : "")); |
4580 | } | |
eb8433b7 NC |
4581 | #ifdef PERL_MAD |
4582 | op_getmad(label,o,'L'); | |
4583 | #else | |
8990e307 | 4584 | op_free(label); |
eb8433b7 | 4585 | #endif |
8990e307 LW |
4586 | } |
4587 | else { | |
e3aba57a RGS |
4588 | /* Check whether it's going to be a goto &function */ |
4589 | if (label->op_type == OP_ENTERSUB | |
4590 | && !(label->op_flags & OPf_STACKED)) | |
a0d0e21e | 4591 | label = newUNOP(OP_REFGEN, 0, mod(label, OP_REFGEN)); |
11343788 | 4592 | o = newUNOP(type, OPf_STACKED, label); |
8990e307 | 4593 | } |
3280af22 | 4594 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 4595 | return o; |
8990e307 LW |
4596 | } |
4597 | ||
0d863452 RH |
4598 | /* if the condition is a literal array or hash |
4599 | (or @{ ... } etc), make a reference to it. | |
4600 | */ | |
4601 | STATIC OP * | |
4602 | S_ref_array_or_hash(pTHX_ OP *cond) | |
4603 | { | |
4604 | if (cond | |
4605 | && (cond->op_type == OP_RV2AV | |
4606 | || cond->op_type == OP_PADAV | |
4607 | || cond->op_type == OP_RV2HV | |
4608 | || cond->op_type == OP_PADHV)) | |
4609 | ||
4610 | return newUNOP(OP_REFGEN, | |
4611 | 0, mod(cond, OP_REFGEN)); | |
4612 | ||
4613 | else | |
4614 | return cond; | |
4615 | } | |
4616 | ||
4617 | /* These construct the optree fragments representing given() | |
4618 | and when() blocks. | |
4619 | ||
4620 | entergiven and enterwhen are LOGOPs; the op_other pointer | |
4621 | points up to the associated leave op. We need this so we | |
4622 | can put it in the context and make break/continue work. | |
4623 | (Also, of course, pp_enterwhen will jump straight to | |
4624 | op_other if the match fails.) | |
4625 | */ | |
4626 | ||
4627 | STATIC | |
4628 | OP * | |
4629 | S_newGIVWHENOP(pTHX_ OP *cond, OP *block, | |
4630 | I32 enter_opcode, I32 leave_opcode, | |
4631 | PADOFFSET entertarg) | |
4632 | { | |
97aff369 | 4633 | dVAR; |
0d863452 RH |
4634 | LOGOP *enterop; |
4635 | OP *o; | |
4636 | ||
4637 | NewOp(1101, enterop, 1, LOGOP); | |
4638 | enterop->op_type = enter_opcode; | |
4639 | enterop->op_ppaddr = PL_ppaddr[enter_opcode]; | |
4640 | enterop->op_flags = (U8) OPf_KIDS; | |
4641 | enterop->op_targ = ((entertarg == NOT_IN_PAD) ? 0 : entertarg); | |
4642 | enterop->op_private = 0; | |
4643 | ||
4644 | o = newUNOP(leave_opcode, 0, (OP *) enterop); | |
4645 | ||
4646 | if (cond) { | |
4647 | enterop->op_first = scalar(cond); | |
4648 | cond->op_sibling = block; | |
4649 | ||
4650 | o->op_next = LINKLIST(cond); | |
4651 | cond->op_next = (OP *) enterop; | |
4652 | } | |
4653 | else { | |
4654 | /* This is a default {} block */ | |
4655 | enterop->op_first = block; | |
4656 | enterop->op_flags |= OPf_SPECIAL; | |
4657 | ||
4658 | o->op_next = (OP *) enterop; | |
4659 | } | |
4660 | ||
4661 | CHECKOP(enter_opcode, enterop); /* Currently does nothing, since | |
4662 | entergiven and enterwhen both | |
4663 | use ck_null() */ | |
4664 | ||
4665 | enterop->op_next = LINKLIST(block); | |
4666 | block->op_next = enterop->op_other = o; | |
4667 | ||
4668 | return o; | |
4669 | } | |
4670 | ||
4671 | /* Does this look like a boolean operation? For these purposes | |
4672 | a boolean operation is: | |
4673 | - a subroutine call [*] | |
4674 | - a logical connective | |
4675 | - a comparison operator | |
4676 | - a filetest operator, with the exception of -s -M -A -C | |
4677 | - defined(), exists() or eof() | |
4678 | - /$re/ or $foo =~ /$re/ | |
4679 | ||
4680 | [*] possibly surprising | |
4681 | */ | |
4682 | STATIC | |
4683 | bool | |
ef519e13 | 4684 | S_looks_like_bool(pTHX_ const OP *o) |
0d863452 | 4685 | { |
97aff369 | 4686 | dVAR; |
0d863452 RH |
4687 | switch(o->op_type) { |
4688 | case OP_OR: | |
4689 | return looks_like_bool(cLOGOPo->op_first); | |
4690 | ||
4691 | case OP_AND: | |
4692 | return ( | |
4693 | looks_like_bool(cLOGOPo->op_first) | |
4694 | && looks_like_bool(cLOGOPo->op_first->op_sibling)); | |
4695 | ||
4696 | case OP_ENTERSUB: | |
4697 | ||
4698 | case OP_NOT: case OP_XOR: | |
4699 | /* Note that OP_DOR is not here */ | |
4700 | ||
4701 | case OP_EQ: case OP_NE: case OP_LT: | |
4702 | case OP_GT: case OP_LE: case OP_GE: | |
4703 | ||
4704 | case OP_I_EQ: case OP_I_NE: case OP_I_LT: | |
4705 | case OP_I_GT: case OP_I_LE: case OP_I_GE: | |
4706 | ||
4707 | case OP_SEQ: case OP_SNE: case OP_SLT: | |
4708 | case OP_SGT: case OP_SLE: case OP_SGE: | |
4709 | ||
4710 | case OP_SMARTMATCH: | |
4711 | ||
4712 | case OP_FTRREAD: case OP_FTRWRITE: case OP_FTREXEC: | |
4713 | case OP_FTEREAD: case OP_FTEWRITE: case OP_FTEEXEC: | |
4714 | case OP_FTIS: case OP_FTEOWNED: case OP_FTROWNED: | |
4715 | case OP_FTZERO: case OP_FTSOCK: case OP_FTCHR: | |
4716 | case OP_FTBLK: case OP_FTFILE: case OP_FTDIR: | |
4717 | case OP_FTPIPE: case OP_FTLINK: case OP_FTSUID: | |
4718 | case OP_FTSGID: case OP_FTSVTX: case OP_FTTTY: | |
4719 | case OP_FTTEXT: case OP_FTBINARY: | |
4720 | ||
4721 | case OP_DEFINED: case OP_EXISTS: | |
4722 | case OP_MATCH: case OP_EOF: | |
4723 | ||
4724 | return TRUE; | |
4725 | ||
4726 | case OP_CONST: | |
4727 | /* Detect comparisons that have been optimized away */ | |
4728 | if (cSVOPo->op_sv == &PL_sv_yes | |
4729 | || cSVOPo->op_sv == &PL_sv_no) | |
4730 | ||
4731 | return TRUE; | |
4732 | ||
4733 | /* FALL THROUGH */ | |
4734 | default: | |
4735 | return FALSE; | |
4736 | } | |
4737 | } | |
4738 | ||
4739 | OP * | |
4740 | Perl_newGIVENOP(pTHX_ OP *cond, OP *block, PADOFFSET defsv_off) | |
4741 | { | |
97aff369 | 4742 | dVAR; |
0d863452 RH |
4743 | assert( cond ); |
4744 | return newGIVWHENOP( | |
4745 | ref_array_or_hash(cond), | |
4746 | block, | |
4747 | OP_ENTERGIVEN, OP_LEAVEGIVEN, | |
4748 | defsv_off); | |
4749 | } | |
4750 | ||
4751 | /* If cond is null, this is a default {} block */ | |
4752 | OP * | |
4753 | Perl_newWHENOP(pTHX_ OP *cond, OP *block) | |
4754 | { | |
ef519e13 | 4755 | const bool cond_llb = (!cond || looks_like_bool(cond)); |
0d863452 RH |
4756 | OP *cond_op; |
4757 | ||
4758 | if (cond_llb) | |
4759 | cond_op = cond; | |
4760 | else { | |
4761 | cond_op = newBINOP(OP_SMARTMATCH, OPf_SPECIAL, | |
4762 | newDEFSVOP(), | |
4763 | scalar(ref_array_or_hash(cond))); | |
4764 | } | |
4765 | ||
4766 | return newGIVWHENOP( | |
4767 | cond_op, | |
4768 | append_elem(block->op_type, block, newOP(OP_BREAK, OPf_SPECIAL)), | |
4769 | OP_ENTERWHEN, OP_LEAVEWHEN, 0); | |
4770 | } | |
4771 | ||
7dafbf52 DM |
4772 | /* |
4773 | =for apidoc cv_undef | |
4774 | ||
4775 | Clear out all the active components of a CV. This can happen either | |
4776 | by an explicit C<undef &foo>, or by the reference count going to zero. | |
4777 | In the former case, we keep the CvOUTSIDE pointer, so that any anonymous | |
4778 | children can still follow the full lexical scope chain. | |
4779 | ||
4780 | =cut | |
4781 | */ | |
4782 | ||
79072805 | 4783 | void |
864dbfa3 | 4784 | Perl_cv_undef(pTHX_ CV *cv) |
79072805 | 4785 | { |
27da23d5 | 4786 | dVAR; |
a636914a | 4787 | #ifdef USE_ITHREADS |
aed2304a | 4788 | if (CvFILE(cv) && !CvISXSUB(cv)) { |
35f1c1c7 | 4789 | /* for XSUBs CvFILE point directly to static memory; __FILE__ */ |
a636914a | 4790 | Safefree(CvFILE(cv)); |
a636914a | 4791 | } |
f3e31eb5 | 4792 | CvFILE(cv) = 0; |
a636914a RH |
4793 | #endif |
4794 | ||
aed2304a | 4795 | if (!CvISXSUB(cv) && CvROOT(cv)) { |
bb172083 | 4796 | if (SvTYPE(cv) == SVt_PVCV && CvDEPTH(cv)) |
cea2e8a9 | 4797 | Perl_croak(aTHX_ "Can't undef active subroutine"); |
8990e307 | 4798 | ENTER; |
a0d0e21e | 4799 | |
f3548bdc | 4800 | PAD_SAVE_SETNULLPAD(); |
a0d0e21e | 4801 | |
282f25c9 | 4802 | op_free(CvROOT(cv)); |
5f66b61c AL |
4803 | CvROOT(cv) = NULL; |
4804 | CvSTART(cv) = NULL; | |
8990e307 | 4805 | LEAVE; |
79072805 | 4806 | } |
1d5db326 | 4807 | SvPOK_off((SV*)cv); /* forget prototype */ |
a0714e2c | 4808 | CvGV(cv) = NULL; |
a3985cdc DM |
4809 | |
4810 | pad_undef(cv); | |
4811 | ||
7dafbf52 DM |
4812 | /* remove CvOUTSIDE unless this is an undef rather than a free */ |
4813 | if (!SvREFCNT(cv) && CvOUTSIDE(cv)) { | |
4814 | if (!CvWEAKOUTSIDE(cv)) | |
4815 | SvREFCNT_dec(CvOUTSIDE(cv)); | |
601f1833 | 4816 | CvOUTSIDE(cv) = NULL; |
7dafbf52 | 4817 | } |
beab0874 JT |
4818 | if (CvCONST(cv)) { |
4819 | SvREFCNT_dec((SV*)CvXSUBANY(cv).any_ptr); | |
4820 | CvCONST_off(cv); | |
4821 | } | |
d04ba589 | 4822 | if (CvISXSUB(cv) && CvXSUB(cv)) { |
96a5add6 | 4823 | CvXSUB(cv) = NULL; |
50762d59 | 4824 | } |
7dafbf52 DM |
4825 | /* delete all flags except WEAKOUTSIDE */ |
4826 | CvFLAGS(cv) &= CVf_WEAKOUTSIDE; | |
79072805 LW |
4827 | } |
4828 | ||
3fe9a6f1 | 4829 | void |
cbf82dd0 NC |
4830 | Perl_cv_ckproto_len(pTHX_ const CV *cv, const GV *gv, const char *p, |
4831 | const STRLEN len) | |
4832 | { | |
4833 | /* Can't just use a strcmp on the prototype, as CONSTSUBs "cheat" by | |
4834 | relying on SvCUR, and doubling up the buffer to hold CvFILE(). */ | |
4835 | if (((!p != !SvPOK(cv)) /* One has prototype, one has not. */ | |
4836 | || (p && (len != SvCUR(cv) /* Not the same length. */ | |
4837 | || memNE(p, SvPVX_const(cv), len)))) | |
4838 | && ckWARN_d(WARN_PROTOTYPE)) { | |
2d03de9c | 4839 | SV* const msg = sv_newmortal(); |
a0714e2c | 4840 | SV* name = NULL; |
3fe9a6f1 | 4841 | |
4842 | if (gv) | |
bd61b366 | 4843 | gv_efullname3(name = sv_newmortal(), gv, NULL); |
46fc3d4c | 4844 | sv_setpv(msg, "Prototype mismatch:"); |
4845 | if (name) | |
95b63a38 | 4846 | Perl_sv_catpvf(aTHX_ msg, " sub %"SVf, (void*)name); |
3fe9a6f1 | 4847 | if (SvPOK(cv)) |
95b63a38 | 4848 | Perl_sv_catpvf(aTHX_ msg, " (%"SVf")", (void*)cv); |
ebe643b9 | 4849 | else |
396482e1 GA |
4850 | sv_catpvs(msg, ": none"); |
4851 | sv_catpvs(msg, " vs "); | |
46fc3d4c | 4852 | if (p) |
cbf82dd0 | 4853 | Perl_sv_catpvf(aTHX_ msg, "(%.*s)", (int) len, p); |
46fc3d4c | 4854 | else |
396482e1 | 4855 | sv_catpvs(msg, "none"); |
95b63a38 | 4856 | Perl_warner(aTHX_ packWARN(WARN_PROTOTYPE), "%"SVf, (void*)msg); |
3fe9a6f1 | 4857 | } |
4858 | } | |
4859 | ||
35f1c1c7 SB |
4860 | static void const_sv_xsub(pTHX_ CV* cv); |
4861 | ||
beab0874 | 4862 | /* |
ccfc67b7 JH |
4863 | |
4864 | =head1 Optree Manipulation Functions | |
4865 | ||
beab0874 JT |
4866 | =for apidoc cv_const_sv |
4867 | ||
4868 | If C<cv> is a constant sub eligible for inlining. returns the constant | |
4869 | value returned by the sub. Otherwise, returns NULL. | |
4870 | ||
4871 | Constant subs can be created with C<newCONSTSUB> or as described in | |
4872 | L<perlsub/"Constant Functions">. | |
4873 | ||
4874 | =cut | |
4875 | */ | |
760ac839 | 4876 | SV * |
864dbfa3 | 4877 | Perl_cv_const_sv(pTHX_ CV *cv) |
760ac839 | 4878 | { |
96a5add6 | 4879 | PERL_UNUSED_CONTEXT; |
5069cc75 NC |
4880 | if (!cv) |
4881 | return NULL; | |
4882 | if (!(SvTYPE(cv) == SVt_PVCV || SvTYPE(cv) == SVt_PVFM)) | |
4883 | return NULL; | |
4884 | return CvCONST(cv) ? (SV*)CvXSUBANY(cv).any_ptr : NULL; | |
fe5e78ed | 4885 | } |
760ac839 | 4886 | |
b5c19bd7 DM |
4887 | /* op_const_sv: examine an optree to determine whether it's in-lineable. |
4888 | * Can be called in 3 ways: | |
4889 | * | |
4890 | * !cv | |
4891 | * look for a single OP_CONST with attached value: return the value | |
4892 | * | |
4893 | * cv && CvCLONE(cv) && !CvCONST(cv) | |
4894 | * | |
4895 | * examine the clone prototype, and if contains only a single | |
4896 | * OP_CONST referencing a pad const, or a single PADSV referencing | |
4897 | * an outer lexical, return a non-zero value to indicate the CV is | |
4898 | * a candidate for "constizing" at clone time | |
4899 | * | |
4900 | * cv && CvCONST(cv) | |
4901 | * | |
4902 | * We have just cloned an anon prototype that was marked as a const | |
4903 | * candidiate. Try to grab the current value, and in the case of | |
4904 | * PADSV, ignore it if it has multiple references. Return the value. | |
4905 | */ | |
4906 | ||
fe5e78ed | 4907 | SV * |
6867be6d | 4908 | Perl_op_const_sv(pTHX_ const OP *o, CV *cv) |
fe5e78ed | 4909 | { |
97aff369 | 4910 | dVAR; |
a0714e2c | 4911 | SV *sv = NULL; |
fe5e78ed | 4912 | |
0f79a09d | 4913 | if (!o) |
a0714e2c | 4914 | return NULL; |
1c846c1f NIS |
4915 | |
4916 | if (o->op_type == OP_LINESEQ && cLISTOPo->op_first) | |
fe5e78ed GS |
4917 | o = cLISTOPo->op_first->op_sibling; |
4918 | ||
4919 | for (; o; o = o->op_next) { | |
890ce7af | 4920 | const OPCODE type = o->op_type; |
fe5e78ed | 4921 | |
1c846c1f | 4922 | if (sv && o->op_next == o) |
fe5e78ed | 4923 | return sv; |
e576b457 JT |
4924 | if (o->op_next != o) { |
4925 | if (type == OP_NEXTSTATE || type == OP_NULL || type == OP_PUSHMARK) | |
4926 | continue; | |
4927 | if (type == OP_DBSTATE) | |
4928 | continue; | |
4929 | } | |
54310121 | 4930 | if (type == OP_LEAVESUB || type == OP_RETURN) |
4931 | break; | |
4932 | if (sv) | |
a0714e2c | 4933 | return NULL; |
7766f137 | 4934 | if (type == OP_CONST && cSVOPo->op_sv) |
5dc0d613 | 4935 | sv = cSVOPo->op_sv; |
b5c19bd7 | 4936 | else if (cv && type == OP_CONST) { |
dd2155a4 | 4937 | sv = PAD_BASE_SV(CvPADLIST(cv), o->op_targ); |
beab0874 | 4938 | if (!sv) |
a0714e2c | 4939 | return NULL; |
b5c19bd7 DM |
4940 | } |
4941 | else if (cv && type == OP_PADSV) { | |
4942 | if (CvCONST(cv)) { /* newly cloned anon */ | |
4943 | sv = PAD_BASE_SV(CvPADLIST(cv), o->op_targ); | |
4944 | /* the candidate should have 1 ref from this pad and 1 ref | |
4945 | * from the parent */ | |
4946 | if (!sv || SvREFCNT(sv) != 2) | |
a0714e2c | 4947 | return NULL; |
beab0874 | 4948 | sv = newSVsv(sv); |
b5c19bd7 DM |
4949 | SvREADONLY_on(sv); |
4950 | return sv; | |
4951 | } | |
4952 | else { | |
4953 | if (PAD_COMPNAME_FLAGS(o->op_targ) & SVf_FAKE) | |
4954 | sv = &PL_sv_undef; /* an arbitrary non-null value */ | |
beab0874 | 4955 | } |
760ac839 | 4956 | } |
b5c19bd7 | 4957 | else { |
a0714e2c | 4958 | return NULL; |
b5c19bd7 | 4959 | } |
760ac839 LW |
4960 | } |
4961 | return sv; | |
4962 | } | |
4963 | ||
eb8433b7 NC |
4964 | #ifdef PERL_MAD |
4965 | OP * | |
4966 | #else | |
09bef843 | 4967 | void |
eb8433b7 | 4968 | #endif |
09bef843 SB |
4969 | Perl_newMYSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, OP *block) |
4970 | { | |
99129197 NC |
4971 | #if 0 |
4972 | /* This would be the return value, but the return cannot be reached. */ | |
eb8433b7 NC |
4973 | OP* pegop = newOP(OP_NULL, 0); |
4974 | #endif | |
4975 | ||
46c461b5 AL |
4976 | PERL_UNUSED_ARG(floor); |
4977 | ||
09bef843 SB |
4978 | if (o) |
4979 | SAVEFREEOP(o); | |
4980 | if (proto) | |
4981 | SAVEFREEOP(proto); | |
4982 | if (attrs) | |
4983 | SAVEFREEOP(attrs); | |
4984 | if (block) | |
4985 | SAVEFREEOP(block); | |
4986 | Perl_croak(aTHX_ "\"my sub\" not yet implemented"); | |
eb8433b7 | 4987 | #ifdef PERL_MAD |
99129197 | 4988 | NORETURN_FUNCTION_END; |
eb8433b7 | 4989 | #endif |
09bef843 SB |
4990 | } |
4991 | ||
748a9306 | 4992 | CV * |
864dbfa3 | 4993 | Perl_newSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *block) |
79072805 | 4994 | { |
5f66b61c | 4995 | return Perl_newATTRSUB(aTHX_ floor, o, proto, NULL, block); |
09bef843 SB |
4996 | } |
4997 | ||
4998 | CV * | |
4999 | Perl_newATTRSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, OP *block) | |
5000 | { | |
27da23d5 | 5001 | dVAR; |
6867be6d | 5002 | const char *aname; |
83ee9e09 | 5003 | GV *gv; |
5c144d81 | 5004 | const char *ps; |
ea6e9374 | 5005 | STRLEN ps_len; |
c445ea15 | 5006 | register CV *cv = NULL; |
beab0874 | 5007 | SV *const_sv; |
b48b272a NC |
5008 | /* If the subroutine has no body, no attributes, and no builtin attributes |
5009 | then it's just a sub declaration, and we may be able to get away with | |
5010 | storing with a placeholder scalar in the symbol table, rather than a | |
5011 | full GV and CV. If anything is present then it will take a full CV to | |
5012 | store it. */ | |
5013 | const I32 gv_fetch_flags | |
eb8433b7 NC |
5014 | = (block || attrs || (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS) |
5015 | || PL_madskills) | |
b48b272a | 5016 | ? GV_ADDMULTI : GV_ADDMULTI | GV_NOINIT; |
bd61b366 | 5017 | const char * const name = o ? SvPVx_nolen_const(cSVOPo->op_sv) : NULL; |
8e742a20 MHM |
5018 | |
5019 | if (proto) { | |
5020 | assert(proto->op_type == OP_CONST); | |
5c144d81 | 5021 | ps = SvPVx_const(((SVOP*)proto)->op_sv, ps_len); |
8e742a20 MHM |
5022 | } |
5023 | else | |
bd61b366 | 5024 | ps = NULL; |
8e742a20 | 5025 | |
83ee9e09 | 5026 | if (!name && PERLDB_NAMEANON && CopLINE(PL_curcop)) { |
aec46f14 | 5027 | SV * const sv = sv_newmortal(); |
c99da370 JH |
5028 | Perl_sv_setpvf(aTHX_ sv, "%s[%s:%"IVdf"]", |
5029 | PL_curstash ? "__ANON__" : "__ANON__::__ANON__", | |
83ee9e09 | 5030 | CopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); |
b15aece3 | 5031 | aname = SvPVX_const(sv); |
83ee9e09 GS |
5032 | } |
5033 | else | |
bd61b366 | 5034 | aname = NULL; |
61dbb99a | 5035 | |
61dbb99a | 5036 | gv = name ? gv_fetchsv(cSVOPo->op_sv, gv_fetch_flags, SVt_PVCV) |
7a5fd60d NC |
5037 | : gv_fetchpv(aname ? aname |
5038 | : (PL_curstash ? "__ANON__" : "__ANON__::__ANON__"), | |
61dbb99a | 5039 | gv_fetch_flags, SVt_PVCV); |
83ee9e09 | 5040 | |
eb8433b7 NC |
5041 | if (!PL_madskills) { |
5042 | if (o) | |
5043 | SAVEFREEOP(o); | |
5044 | if (proto) | |
5045 | SAVEFREEOP(proto); | |
5046 | if (attrs) | |
5047 | SAVEFREEOP(attrs); | |
5048 | } | |
3fe9a6f1 | 5049 | |
09bef843 | 5050 | if (SvTYPE(gv) != SVt_PVGV) { /* Maybe prototype now, and had at |
55d729e4 GS |
5051 | maximum a prototype before. */ |
5052 | if (SvTYPE(gv) > SVt_NULL) { | |
0453d815 | 5053 | if (!SvPOK((SV*)gv) && !(SvIOK((SV*)gv) && SvIVX((SV*)gv) == -1) |
e476b1b5 | 5054 | && ckWARN_d(WARN_PROTOTYPE)) |
f248d071 | 5055 | { |
9014280d | 5056 | Perl_warner(aTHX_ packWARN(WARN_PROTOTYPE), "Runaway prototype"); |
f248d071 | 5057 | } |
cbf82dd0 | 5058 | cv_ckproto_len((CV*)gv, NULL, ps, ps_len); |
55d729e4 GS |
5059 | } |
5060 | if (ps) | |
ea6e9374 | 5061 | sv_setpvn((SV*)gv, ps, ps_len); |
55d729e4 GS |
5062 | else |
5063 | sv_setiv((SV*)gv, -1); | |
3280af22 NIS |
5064 | SvREFCNT_dec(PL_compcv); |
5065 | cv = PL_compcv = NULL; | |
5066 | PL_sub_generation++; | |
beab0874 | 5067 | goto done; |
55d729e4 GS |
5068 | } |
5069 | ||
601f1833 | 5070 | cv = (!name || GvCVGEN(gv)) ? NULL : GvCV(gv); |
beab0874 | 5071 | |
7fb37951 AMS |
5072 | #ifdef GV_UNIQUE_CHECK |
5073 | if (cv && GvUNIQUE(gv) && SvREADONLY(cv)) { | |
5074 | Perl_croak(aTHX_ "Can't define subroutine %s (GV is unique)", name); | |
5bd07a3d DM |
5075 | } |
5076 | #endif | |
5077 | ||
eb8433b7 NC |
5078 | if (!block || !ps || *ps || attrs |
5079 | || (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS) | |
5080 | #ifdef PERL_MAD | |
5081 | || block->op_type == OP_NULL | |
5082 | #endif | |
5083 | ) | |
a0714e2c | 5084 | const_sv = NULL; |
beab0874 | 5085 | else |
601f1833 | 5086 | const_sv = op_const_sv(block, NULL); |
beab0874 JT |
5087 | |
5088 | if (cv) { | |
6867be6d | 5089 | const bool exists = CvROOT(cv) || CvXSUB(cv); |
5bd07a3d | 5090 | |
7fb37951 AMS |
5091 | #ifdef GV_UNIQUE_CHECK |
5092 | if (exists && GvUNIQUE(gv)) { | |
5093 | Perl_croak(aTHX_ "Can't redefine unique subroutine %s", name); | |
5bd07a3d DM |
5094 | } |
5095 | #endif | |
5096 | ||
60ed1d8c GS |
5097 | /* if the subroutine doesn't exist and wasn't pre-declared |
5098 | * with a prototype, assume it will be AUTOLOADed, | |
5099 | * skipping the prototype check | |
5100 | */ | |
5101 | if (exists || SvPOK(cv)) | |
cbf82dd0 | 5102 | cv_ckproto_len(cv, gv, ps, ps_len); |
68dc0745 | 5103 | /* already defined (or promised)? */ |
60ed1d8c | 5104 | if (exists || GvASSUMECV(gv)) { |
eb8433b7 NC |
5105 | if ((!block |
5106 | #ifdef PERL_MAD | |
5107 | || block->op_type == OP_NULL | |
5108 | #endif | |
5109 | )&& !attrs) { | |
d3cea301 SB |
5110 | if (CvFLAGS(PL_compcv)) { |
5111 | /* might have had built-in attrs applied */ | |
5112 | CvFLAGS(cv) |= (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS); | |
5113 | } | |
aa689395 | 5114 | /* just a "sub foo;" when &foo is already defined */ |
3280af22 | 5115 | SAVEFREESV(PL_compcv); |
aa689395 | 5116 | goto done; |
5117 | } | |
eb8433b7 NC |
5118 | if (block |
5119 | #ifdef PERL_MAD | |
5120 | && block->op_type != OP_NULL | |
5121 | #endif | |
5122 | ) { | |
beab0874 JT |
5123 | if (ckWARN(WARN_REDEFINE) |
5124 | || (CvCONST(cv) | |
5125 | && (!const_sv || sv_cmp(cv_const_sv(cv), const_sv)))) | |
5126 | { | |
6867be6d | 5127 | const line_t oldline = CopLINE(PL_curcop); |
d8a34499 IK |
5128 | if (PL_copline != NOLINE) |
5129 | CopLINE_set(PL_curcop, PL_copline); | |
9014280d | 5130 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), |
beab0874 JT |
5131 | CvCONST(cv) ? "Constant subroutine %s redefined" |
5132 | : "Subroutine %s redefined", name); | |
5133 | CopLINE_set(PL_curcop, oldline); | |
5134 | } | |
eb8433b7 NC |
5135 | #ifdef PERL_MAD |
5136 | if (!PL_minus_c) /* keep old one around for madskills */ | |
5137 | #endif | |
5138 | { | |
5139 | /* (PL_madskills unset in used file.) */ | |
5140 | SvREFCNT_dec(cv); | |
5141 | } | |
601f1833 | 5142 | cv = NULL; |
79072805 | 5143 | } |
79072805 LW |
5144 | } |
5145 | } | |
beab0874 | 5146 | if (const_sv) { |
f84c484e | 5147 | SvREFCNT_inc_simple_void_NN(const_sv); |
beab0874 | 5148 | if (cv) { |
0768512c | 5149 | assert(!CvROOT(cv) && !CvCONST(cv)); |
c69006e4 | 5150 | sv_setpvn((SV*)cv, "", 0); /* prototype is "" */ |
beab0874 JT |
5151 | CvXSUBANY(cv).any_ptr = const_sv; |
5152 | CvXSUB(cv) = const_sv_xsub; | |
5153 | CvCONST_on(cv); | |
d04ba589 | 5154 | CvISXSUB_on(cv); |
beab0874 JT |
5155 | } |
5156 | else { | |
601f1833 | 5157 | GvCV(gv) = NULL; |
beab0874 JT |
5158 | cv = newCONSTSUB(NULL, name, const_sv); |
5159 | } | |
eb8433b7 NC |
5160 | PL_sub_generation++; |
5161 | if (PL_madskills) | |
5162 | goto install_block; | |
beab0874 JT |
5163 | op_free(block); |
5164 | SvREFCNT_dec(PL_compcv); | |
5165 | PL_compcv = NULL; | |
beab0874 JT |
5166 | goto done; |
5167 | } | |
09bef843 SB |
5168 | if (attrs) { |
5169 | HV *stash; | |
5170 | SV *rcv; | |
5171 | ||
5172 | /* Need to do a C<use attributes $stash_of_cv,\&cv,@attrs> | |
5173 | * before we clobber PL_compcv. | |
5174 | */ | |
99129197 | 5175 | if (cv && (!block |
eb8433b7 NC |
5176 | #ifdef PERL_MAD |
5177 | || block->op_type == OP_NULL | |
5178 | #endif | |
5179 | )) { | |
09bef843 | 5180 | rcv = (SV*)cv; |
020f0e03 SB |
5181 | /* Might have had built-in attributes applied -- propagate them. */ |
5182 | CvFLAGS(cv) |= (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS); | |
a9164de8 | 5183 | if (CvGV(cv) && GvSTASH(CvGV(cv))) |
09bef843 | 5184 | stash = GvSTASH(CvGV(cv)); |
a9164de8 | 5185 | else if (CvSTASH(cv)) |
09bef843 SB |
5186 | stash = CvSTASH(cv); |
5187 | else | |
5188 | stash = PL_curstash; | |
5189 | } | |
5190 | else { | |
5191 | /* possibly about to re-define existing subr -- ignore old cv */ | |
5192 | rcv = (SV*)PL_compcv; | |
a9164de8 | 5193 | if (name && GvSTASH(gv)) |
09bef843 SB |
5194 | stash = GvSTASH(gv); |
5195 | else | |
5196 | stash = PL_curstash; | |
5197 | } | |
95f0a2f1 | 5198 | apply_attrs(stash, rcv, attrs, FALSE); |
09bef843 | 5199 | } |
a0d0e21e | 5200 | if (cv) { /* must reuse cv if autoloaded */ |
eb8433b7 NC |
5201 | if ( |
5202 | #ifdef PERL_MAD | |
5203 | ( | |
5204 | #endif | |
5205 | !block | |
5206 | #ifdef PERL_MAD | |
5207 | || block->op_type == OP_NULL) && !PL_madskills | |
5208 | #endif | |
5209 | ) { | |
09bef843 SB |
5210 | /* got here with just attrs -- work done, so bug out */ |
5211 | SAVEFREESV(PL_compcv); | |
5212 | goto done; | |
5213 | } | |
a3985cdc | 5214 | /* transfer PL_compcv to cv */ |
4633a7c4 | 5215 | cv_undef(cv); |
3280af22 | 5216 | CvFLAGS(cv) = CvFLAGS(PL_compcv); |
5c41a5fa DM |
5217 | if (!CvWEAKOUTSIDE(cv)) |
5218 | SvREFCNT_dec(CvOUTSIDE(cv)); | |
3280af22 | 5219 | CvOUTSIDE(cv) = CvOUTSIDE(PL_compcv); |
a3985cdc | 5220 | CvOUTSIDE_SEQ(cv) = CvOUTSIDE_SEQ(PL_compcv); |
3280af22 NIS |
5221 | CvOUTSIDE(PL_compcv) = 0; |
5222 | CvPADLIST(cv) = CvPADLIST(PL_compcv); | |
5223 | CvPADLIST(PL_compcv) = 0; | |
282f25c9 | 5224 | /* inner references to PL_compcv must be fixed up ... */ |
dd2155a4 | 5225 | pad_fixup_inner_anons(CvPADLIST(cv), PL_compcv, cv); |
282f25c9 | 5226 | /* ... before we throw it away */ |
3280af22 | 5227 | SvREFCNT_dec(PL_compcv); |
b5c19bd7 | 5228 | PL_compcv = cv; |
a933f601 IZ |
5229 | if (PERLDB_INTER)/* Advice debugger on the new sub. */ |
5230 | ++PL_sub_generation; | |
a0d0e21e LW |
5231 | } |
5232 | else { | |
3280af22 | 5233 | cv = PL_compcv; |
44a8e56a | 5234 | if (name) { |
5235 | GvCV(gv) = cv; | |
eb8433b7 NC |
5236 | if (PL_madskills) { |
5237 | if (strEQ(name, "import")) { | |
5238 | PL_formfeed = (SV*)cv; | |
5239 | Perl_warner(aTHX_ packWARN(WARN_VOID), "%lx\n", (long)cv); | |
5240 | } | |
5241 | } | |
44a8e56a | 5242 | GvCVGEN(gv) = 0; |
3280af22 | 5243 | PL_sub_generation++; |
44a8e56a | 5244 | } |
a0d0e21e | 5245 | } |
65c50114 | 5246 | CvGV(cv) = gv; |
a636914a | 5247 | CvFILE_set_from_cop(cv, PL_curcop); |
3280af22 | 5248 | CvSTASH(cv) = PL_curstash; |
8990e307 | 5249 | |
3fe9a6f1 | 5250 | if (ps) |
ea6e9374 | 5251 | sv_setpvn((SV*)cv, ps, ps_len); |
4633a7c4 | 5252 | |
3280af22 | 5253 | if (PL_error_count) { |
c07a80fd | 5254 | op_free(block); |
5f66b61c | 5255 | block = NULL; |
68dc0745 | 5256 | if (name) { |
6867be6d | 5257 | const char *s = strrchr(name, ':'); |
68dc0745 | 5258 | s = s ? s+1 : name; |
6d4c2119 | 5259 | if (strEQ(s, "BEGIN")) { |
e1ec3a88 | 5260 | const char not_safe[] = |
6d4c2119 | 5261 | "BEGIN not safe after errors--compilation aborted"; |
faef0170 | 5262 | if (PL_in_eval & EVAL_KEEPERR) |
cea2e8a9 | 5263 | Perl_croak(aTHX_ not_safe); |
6d4c2119 CS |
5264 | else { |
5265 | /* force display of errors found but not reported */ | |
38a03e6e | 5266 | sv_catpv(ERRSV, not_safe); |
95b63a38 | 5267 | Perl_croak(aTHX_ "%"SVf, (void*)ERRSV); |
6d4c2119 CS |
5268 | } |
5269 | } | |
68dc0745 | 5270 | } |
c07a80fd | 5271 | } |
eb8433b7 | 5272 | install_block: |
beab0874 JT |
5273 | if (!block) |
5274 | goto done; | |
a0d0e21e | 5275 | |
7766f137 | 5276 | if (CvLVALUE(cv)) { |
78f9721b SM |
5277 | CvROOT(cv) = newUNOP(OP_LEAVESUBLV, 0, |
5278 | mod(scalarseq(block), OP_LEAVESUBLV)); | |
7766f137 GS |
5279 | } |
5280 | else { | |
09c2fd24 AE |
5281 | /* This makes sub {}; work as expected. */ |
5282 | if (block->op_type == OP_STUB) { | |
1496a290 | 5283 | OP* const newblock = newSTATEOP(0, NULL, 0); |
eb8433b7 NC |
5284 | #ifdef PERL_MAD |
5285 | op_getmad(block,newblock,'B'); | |
5286 | #else | |
09c2fd24 | 5287 | op_free(block); |
eb8433b7 NC |
5288 | #endif |
5289 | block = newblock; | |
09c2fd24 | 5290 | } |
7766f137 GS |
5291 | CvROOT(cv) = newUNOP(OP_LEAVESUB, 0, scalarseq(block)); |
5292 | } | |
5293 | CvROOT(cv)->op_private |= OPpREFCOUNTED; | |
5294 | OpREFCNT_set(CvROOT(cv), 1); | |
5295 | CvSTART(cv) = LINKLIST(CvROOT(cv)); | |
5296 | CvROOT(cv)->op_next = 0; | |
a2efc822 | 5297 | CALL_PEEP(CvSTART(cv)); |
7766f137 GS |
5298 | |
5299 | /* now that optimizer has done its work, adjust pad values */ | |
54310121 | 5300 | |
dd2155a4 DM |
5301 | pad_tidy(CvCLONE(cv) ? padtidy_SUBCLONE : padtidy_SUB); |
5302 | ||
5303 | if (CvCLONE(cv)) { | |
beab0874 JT |
5304 | assert(!CvCONST(cv)); |
5305 | if (ps && !*ps && op_const_sv(block, cv)) | |
5306 | CvCONST_on(cv); | |
a0d0e21e | 5307 | } |
79072805 | 5308 | |
83ee9e09 | 5309 | if (name || aname) { |
6867be6d | 5310 | const char *s; |
0bd48802 | 5311 | const char * const tname = (name ? name : aname); |
44a8e56a | 5312 | |
3280af22 | 5313 | if (PERLDB_SUBLINE && PL_curstash != PL_debstash) { |
561b68a9 | 5314 | SV * const sv = newSV(0); |
c4420975 | 5315 | SV * const tmpstr = sv_newmortal(); |
5c1737d1 NC |
5316 | GV * const db_postponed = gv_fetchpvs("DB::postponed", |
5317 | GV_ADDMULTI, SVt_PVHV); | |
44a8e56a | 5318 | HV *hv; |
5319 | ||
ed094faf GS |
5320 | Perl_sv_setpvf(aTHX_ sv, "%s:%ld-%ld", |
5321 | CopFILE(PL_curcop), | |
cc49e20b | 5322 | (long)PL_subline, (long)CopLINE(PL_curcop)); |
bd61b366 | 5323 | gv_efullname3(tmpstr, gv, NULL); |
b15aece3 | 5324 | hv_store(GvHV(PL_DBsub), SvPVX_const(tmpstr), SvCUR(tmpstr), sv, 0); |
44a8e56a | 5325 | hv = GvHVn(db_postponed); |
551405c4 AL |
5326 | if (HvFILL(hv) > 0 && hv_exists(hv, SvPVX_const(tmpstr), SvCUR(tmpstr))) { |
5327 | CV * const pcv = GvCV(db_postponed); | |
5328 | if (pcv) { | |
5329 | dSP; | |
5330 | PUSHMARK(SP); | |
5331 | XPUSHs(tmpstr); | |
5332 | PUTBACK; | |
5333 | call_sv((SV*)pcv, G_DISCARD); | |
5334 | } | |
44a8e56a | 5335 | } |
5336 | } | |
79072805 | 5337 | |
83ee9e09 | 5338 | if ((s = strrchr(tname,':'))) |
28757baa | 5339 | s++; |
5340 | else | |
83ee9e09 | 5341 | s = tname; |
ed094faf | 5342 | |
7d30b5c4 | 5343 | if (*s != 'B' && *s != 'E' && *s != 'C' && *s != 'I') |
ed094faf GS |
5344 | goto done; |
5345 | ||
7678c486 | 5346 | if (strEQ(s, "BEGIN") && !PL_error_count) { |
6867be6d | 5347 | const I32 oldscope = PL_scopestack_ix; |
28757baa | 5348 | ENTER; |
57843af0 GS |
5349 | SAVECOPFILE(&PL_compiling); |
5350 | SAVECOPLINE(&PL_compiling); | |
28757baa | 5351 | |
3280af22 NIS |
5352 | if (!PL_beginav) |
5353 | PL_beginav = newAV(); | |
28757baa | 5354 | DEBUG_x( dump_sub(gv) ); |
ea2f84a3 GS |
5355 | av_push(PL_beginav, (SV*)cv); |
5356 | GvCV(gv) = 0; /* cv has been hijacked */ | |
3280af22 | 5357 | call_list(oldscope, PL_beginav); |
a6006777 | 5358 | |
3280af22 | 5359 | PL_curcop = &PL_compiling; |
623e6609 | 5360 | CopHINTS_set(&PL_compiling, PL_hints); |
28757baa | 5361 | LEAVE; |
5362 | } | |
3280af22 NIS |
5363 | else if (strEQ(s, "END") && !PL_error_count) { |
5364 | if (!PL_endav) | |
5365 | PL_endav = newAV(); | |
ed094faf | 5366 | DEBUG_x( dump_sub(gv) ); |
3280af22 | 5367 | av_unshift(PL_endav, 1); |
ea2f84a3 GS |
5368 | av_store(PL_endav, 0, (SV*)cv); |
5369 | GvCV(gv) = 0; /* cv has been hijacked */ | |
28757baa | 5370 | } |
7d30b5c4 GS |
5371 | else if (strEQ(s, "CHECK") && !PL_error_count) { |
5372 | if (!PL_checkav) | |
5373 | PL_checkav = newAV(); | |
ed094faf | 5374 | DEBUG_x( dump_sub(gv) ); |
ddda08b7 | 5375 | if (PL_main_start && ckWARN(WARN_VOID)) |
9014280d | 5376 | Perl_warner(aTHX_ packWARN(WARN_VOID), "Too late to run CHECK block"); |
7d30b5c4 | 5377 | av_unshift(PL_checkav, 1); |
ea2f84a3 GS |
5378 | av_store(PL_checkav, 0, (SV*)cv); |
5379 | GvCV(gv) = 0; /* cv has been hijacked */ | |
4f25aa18 | 5380 | } |
3280af22 NIS |
5381 | else if (strEQ(s, "INIT") && !PL_error_count) { |
5382 | if (!PL_initav) | |
5383 | PL_initav = newAV(); | |
ed094faf | 5384 | DEBUG_x( dump_sub(gv) ); |
ddda08b7 | 5385 | if (PL_main_start && ckWARN(WARN_VOID)) |
9014280d | 5386 | Perl_warner(aTHX_ packWARN(WARN_VOID), "Too late to run INIT block"); |
ea2f84a3 GS |
5387 | av_push(PL_initav, (SV*)cv); |
5388 | GvCV(gv) = 0; /* cv has been hijacked */ | |
ae77835f | 5389 | } |
79072805 | 5390 | } |
a6006777 | 5391 | |
aa689395 | 5392 | done: |
3280af22 | 5393 | PL_copline = NOLINE; |
8990e307 | 5394 | LEAVE_SCOPE(floor); |
a0d0e21e | 5395 | return cv; |
79072805 LW |
5396 | } |
5397 | ||
b099ddc0 | 5398 | /* XXX unsafe for threads if eval_owner isn't held */ |
954c1994 GS |
5399 | /* |
5400 | =for apidoc newCONSTSUB | |
5401 | ||
5402 | Creates a constant sub equivalent to Perl C<sub FOO () { 123 }> which is | |
5403 | eligible for inlining at compile-time. | |
5404 | ||
5405 | =cut | |
5406 | */ | |
5407 | ||
beab0874 | 5408 | CV * |
e1ec3a88 | 5409 | Perl_newCONSTSUB(pTHX_ HV *stash, const char *name, SV *sv) |
5476c433 | 5410 | { |
27da23d5 | 5411 | dVAR; |
beab0874 | 5412 | CV* cv; |
cbf82dd0 NC |
5413 | #ifdef USE_ITHREADS |
5414 | const char *const temp_p = CopFILE(PL_curcop); | |
07fcac01 | 5415 | const STRLEN len = temp_p ? strlen(temp_p) : 0; |
cbf82dd0 NC |
5416 | #else |
5417 | SV *const temp_sv = CopFILESV(PL_curcop); | |
5418 | STRLEN len; | |
5419 | const char *const temp_p = temp_sv ? SvPV_const(temp_sv, len) : NULL; | |
5420 | #endif | |
07fcac01 | 5421 | char *const file = savepvn(temp_p, temp_p ? len : 0); |
5476c433 | 5422 | |
11faa288 | 5423 | ENTER; |
11faa288 | 5424 | |
f4dd75d9 | 5425 | SAVECOPLINE(PL_curcop); |
11faa288 | 5426 | CopLINE_set(PL_curcop, PL_copline); |
f4dd75d9 GS |
5427 | |
5428 | SAVEHINTS(); | |
3280af22 | 5429 | PL_hints &= ~HINT_BLOCK_SCOPE; |
11faa288 GS |
5430 | |
5431 | if (stash) { | |
5432 | SAVESPTR(PL_curstash); | |
5433 | SAVECOPSTASH(PL_curcop); | |
5434 | PL_curstash = stash; | |
05ec9bb3 | 5435 | CopSTASH_set(PL_curcop,stash); |
11faa288 | 5436 | } |
5476c433 | 5437 | |
cbf82dd0 NC |
5438 | /* file becomes the CvFILE. For an XS, it's supposed to be static storage, |
5439 | and so doesn't get free()d. (It's expected to be from the C pre- | |
5440 | processor __FILE__ directive). But we need a dynamically allocated one, | |
77004dee NC |
5441 | and we need it to get freed. */ |
5442 | cv = newXS_flags(name, const_sv_xsub, file, "", XS_DYNAMIC_FILENAME); | |
beab0874 JT |
5443 | CvXSUBANY(cv).any_ptr = sv; |
5444 | CvCONST_on(cv); | |
5476c433 | 5445 | |
65e66c80 | 5446 | #ifdef USE_ITHREADS |
02f28d44 MHM |
5447 | if (stash) |
5448 | CopSTASH_free(PL_curcop); | |
65e66c80 | 5449 | #endif |
11faa288 | 5450 | LEAVE; |
beab0874 JT |
5451 | |
5452 | return cv; | |
5476c433 JD |
5453 | } |
5454 | ||
77004dee NC |
5455 | CV * |
5456 | Perl_newXS_flags(pTHX_ const char *name, XSUBADDR_t subaddr, | |
5457 | const char *const filename, const char *const proto, | |
5458 | U32 flags) | |
5459 | { | |
5460 | CV *cv = newXS(name, subaddr, filename); | |
5461 | ||
5462 | if (flags & XS_DYNAMIC_FILENAME) { | |
5463 | /* We need to "make arrangements" (ie cheat) to ensure that the | |
5464 | filename lasts as long as the PVCV we just created, but also doesn't | |
5465 | leak */ | |
5466 | STRLEN filename_len = strlen(filename); | |
5467 | STRLEN proto_and_file_len = filename_len; | |
5468 | char *proto_and_file; | |
5469 | STRLEN proto_len; | |
5470 | ||
5471 | if (proto) { | |
5472 | proto_len = strlen(proto); | |
5473 | proto_and_file_len += proto_len; | |
5474 | ||
5475 | Newx(proto_and_file, proto_and_file_len + 1, char); | |
5476 | Copy(proto, proto_and_file, proto_len, char); | |
5477 | Copy(filename, proto_and_file + proto_len, filename_len + 1, char); | |
5478 | } else { | |
5479 | proto_len = 0; | |
5480 | proto_and_file = savepvn(filename, filename_len); | |
5481 | } | |
5482 | ||
5483 | /* This gets free()d. :-) */ | |
5484 | sv_usepvn_flags((SV*)cv, proto_and_file, proto_and_file_len, | |
5485 | SV_HAS_TRAILING_NUL); | |
5486 | if (proto) { | |
5487 | /* This gives us the correct prototype, rather than one with the | |
5488 | file name appended. */ | |
5489 | SvCUR_set(cv, proto_len); | |
5490 | } else { | |
5491 | SvPOK_off(cv); | |
5492 | } | |
81a2b3b6 | 5493 | CvFILE(cv) = proto_and_file + proto_len; |
77004dee NC |
5494 | } else { |
5495 | sv_setpv((SV *)cv, proto); | |
5496 | } | |
5497 | return cv; | |
5498 | } | |
5499 | ||
954c1994 GS |
5500 | /* |
5501 | =for apidoc U||newXS | |
5502 | ||
77004dee NC |
5503 | Used by C<xsubpp> to hook up XSUBs as Perl subs. I<filename> needs to be |
5504 | static storage, as it is used directly as CvFILE(), without a copy being made. | |
954c1994 GS |
5505 | |
5506 | =cut | |
5507 | */ | |
5508 | ||
57d3b86d | 5509 | CV * |
bfed75c6 | 5510 | Perl_newXS(pTHX_ const char *name, XSUBADDR_t subaddr, const char *filename) |
a0d0e21e | 5511 | { |
97aff369 | 5512 | dVAR; |
9a957fbc | 5513 | GV * const gv = gv_fetchpv(name ? name : |
c99da370 JH |
5514 | (PL_curstash ? "__ANON__" : "__ANON__::__ANON__"), |
5515 | GV_ADDMULTI, SVt_PVCV); | |
79072805 | 5516 | register CV *cv; |
44a8e56a | 5517 | |
1ecdd9a8 HS |
5518 | if (!subaddr) |
5519 | Perl_croak(aTHX_ "panic: no address for '%s' in '%s'", name, filename); | |
5520 | ||
601f1833 | 5521 | if ((cv = (name ? GvCV(gv) : NULL))) { |
44a8e56a | 5522 | if (GvCVGEN(gv)) { |
5523 | /* just a cached method */ | |
5524 | SvREFCNT_dec(cv); | |
601f1833 | 5525 | cv = NULL; |
44a8e56a | 5526 | } |
5527 | else if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
5528 | /* already defined (or promised) */ | |
1df70142 | 5529 | /* XXX It's possible for this HvNAME_get to return null, and get passed into strEQ */ |
66a1b24b AL |
5530 | if (ckWARN(WARN_REDEFINE)) { |
5531 | GV * const gvcv = CvGV(cv); | |
5532 | if (gvcv) { | |
5533 | HV * const stash = GvSTASH(gvcv); | |
5534 | if (stash) { | |
8b38226b AL |
5535 | const char *redefined_name = HvNAME_get(stash); |
5536 | if ( strEQ(redefined_name,"autouse") ) { | |
66a1b24b AL |
5537 | const line_t oldline = CopLINE(PL_curcop); |
5538 | if (PL_copline != NOLINE) | |
5539 | CopLINE_set(PL_curcop, PL_copline); | |
5540 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), | |
5541 | CvCONST(cv) ? "Constant subroutine %s redefined" | |
5542 | : "Subroutine %s redefined" | |
5543 | ,name); | |
5544 | CopLINE_set(PL_curcop, oldline); | |
5545 | } | |
5546 | } | |
5547 | } | |
a0d0e21e LW |
5548 | } |
5549 | SvREFCNT_dec(cv); | |
601f1833 | 5550 | cv = NULL; |
79072805 | 5551 | } |
79072805 | 5552 | } |
44a8e56a | 5553 | |
5554 | if (cv) /* must reuse cv if autoloaded */ | |
5555 | cv_undef(cv); | |
a0d0e21e | 5556 | else { |
561b68a9 | 5557 | cv = (CV*)newSV(0); |
a0d0e21e | 5558 | sv_upgrade((SV *)cv, SVt_PVCV); |
44a8e56a | 5559 | if (name) { |
5560 | GvCV(gv) = cv; | |
5561 | GvCVGEN(gv) = 0; | |
3280af22 | 5562 | PL_sub_generation++; |
44a8e56a | 5563 | } |
a0d0e21e | 5564 | } |
65c50114 | 5565 | CvGV(cv) = gv; |
b195d487 | 5566 | (void)gv_fetchfile(filename); |
dd374669 | 5567 | CvFILE(cv) = (char *)filename; /* NOTE: not copied, as it is expected to be |
57843af0 | 5568 | an external constant string */ |
d04ba589 | 5569 | CvISXSUB_on(cv); |
a0d0e21e | 5570 | CvXSUB(cv) = subaddr; |
44a8e56a | 5571 | |
28757baa | 5572 | if (name) { |
e1ec3a88 | 5573 | const char *s = strrchr(name,':'); |
28757baa | 5574 | if (s) |
5575 | s++; | |
5576 | else | |
5577 | s = name; | |
ed094faf | 5578 | |
7d30b5c4 | 5579 | if (*s != 'B' && *s != 'E' && *s != 'C' && *s != 'I') |
ed094faf GS |
5580 | goto done; |
5581 | ||
28757baa | 5582 | if (strEQ(s, "BEGIN")) { |
3280af22 NIS |
5583 | if (!PL_beginav) |
5584 | PL_beginav = newAV(); | |
ea2f84a3 GS |
5585 | av_push(PL_beginav, (SV*)cv); |
5586 | GvCV(gv) = 0; /* cv has been hijacked */ | |
28757baa | 5587 | } |
5588 | else if (strEQ(s, "END")) { | |
3280af22 NIS |
5589 | if (!PL_endav) |
5590 | PL_endav = newAV(); | |
5591 | av_unshift(PL_endav, 1); | |
ea2f84a3 GS |
5592 | av_store(PL_endav, 0, (SV*)cv); |
5593 | GvCV(gv) = 0; /* cv has been hijacked */ | |
28757baa | 5594 | } |
7d30b5c4 GS |
5595 | else if (strEQ(s, "CHECK")) { |
5596 | if (!PL_checkav) | |
5597 | PL_checkav = newAV(); | |
ddda08b7 | 5598 | if (PL_main_start && ckWARN(WARN_VOID)) |
9014280d | 5599 | Perl_warner(aTHX_ packWARN(WARN_VOID), "Too late to run CHECK block"); |
7d30b5c4 | 5600 | av_unshift(PL_checkav, 1); |
ea2f84a3 GS |
5601 | av_store(PL_checkav, 0, (SV*)cv); |
5602 | GvCV(gv) = 0; /* cv has been hijacked */ | |
4f25aa18 | 5603 | } |
7d07dbc2 | 5604 | else if (strEQ(s, "INIT")) { |
3280af22 NIS |
5605 | if (!PL_initav) |
5606 | PL_initav = newAV(); | |
ddda08b7 | 5607 | if (PL_main_start && ckWARN(WARN_VOID)) |
9014280d | 5608 | Perl_warner(aTHX_ packWARN(WARN_VOID), "Too late to run INIT block"); |
ea2f84a3 GS |
5609 | av_push(PL_initav, (SV*)cv); |
5610 | GvCV(gv) = 0; /* cv has been hijacked */ | |
ae77835f | 5611 | } |
28757baa | 5612 | } |
8990e307 | 5613 | else |
a5f75d66 | 5614 | CvANON_on(cv); |
44a8e56a | 5615 | |
ed094faf | 5616 | done: |
a0d0e21e | 5617 | return cv; |
79072805 LW |
5618 | } |
5619 | ||
eb8433b7 NC |
5620 | #ifdef PERL_MAD |
5621 | OP * | |
5622 | #else | |
79072805 | 5623 | void |
eb8433b7 | 5624 | #endif |
864dbfa3 | 5625 | Perl_newFORM(pTHX_ I32 floor, OP *o, OP *block) |
79072805 | 5626 | { |
97aff369 | 5627 | dVAR; |
79072805 | 5628 | register CV *cv; |
eb8433b7 NC |
5629 | #ifdef PERL_MAD |
5630 | OP* pegop = newOP(OP_NULL, 0); | |
5631 | #endif | |
79072805 | 5632 | |
0bd48802 | 5633 | GV * const gv = o |
f776e3cd | 5634 | ? gv_fetchsv(cSVOPo->op_sv, GV_ADD, SVt_PVFM) |
fafc274c | 5635 | : gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVFM); |
0bd48802 | 5636 | |
7fb37951 AMS |
5637 | #ifdef GV_UNIQUE_CHECK |
5638 | if (GvUNIQUE(gv)) { | |
5639 | Perl_croak(aTHX_ "Bad symbol for form (GV is unique)"); | |
5bd07a3d DM |
5640 | } |
5641 | #endif | |
a5f75d66 | 5642 | GvMULTI_on(gv); |
155aba94 | 5643 | if ((cv = GvFORM(gv))) { |
599cee73 | 5644 | if (ckWARN(WARN_REDEFINE)) { |
6867be6d | 5645 | const line_t oldline = CopLINE(PL_curcop); |
d8a34499 IK |
5646 | if (PL_copline != NOLINE) |
5647 | CopLINE_set(PL_curcop, PL_copline); | |
7a5fd60d NC |
5648 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), |
5649 | o ? "Format %"SVf" redefined" | |
95b63a38 | 5650 | : "Format STDOUT redefined", (void*)cSVOPo->op_sv); |
57843af0 | 5651 | CopLINE_set(PL_curcop, oldline); |
79072805 | 5652 | } |
8990e307 | 5653 | SvREFCNT_dec(cv); |
79072805 | 5654 | } |
3280af22 | 5655 | cv = PL_compcv; |
79072805 | 5656 | GvFORM(gv) = cv; |
65c50114 | 5657 | CvGV(cv) = gv; |
a636914a | 5658 | CvFILE_set_from_cop(cv, PL_curcop); |
79072805 | 5659 | |
a0d0e21e | 5660 | |
dd2155a4 | 5661 | pad_tidy(padtidy_FORMAT); |
79072805 | 5662 | CvROOT(cv) = newUNOP(OP_LEAVEWRITE, 0, scalarseq(block)); |
7934575e GS |
5663 | CvROOT(cv)->op_private |= OPpREFCOUNTED; |
5664 | OpREFCNT_set(CvROOT(cv), 1); | |
79072805 LW |
5665 | CvSTART(cv) = LINKLIST(CvROOT(cv)); |
5666 | CvROOT(cv)->op_next = 0; | |
a2efc822 | 5667 | CALL_PEEP(CvSTART(cv)); |
eb8433b7 NC |
5668 | #ifdef PERL_MAD |
5669 | op_getmad(o,pegop,'n'); | |
5670 | op_getmad_weak(block, pegop, 'b'); | |
5671 | #else | |
11343788 | 5672 | op_free(o); |
eb8433b7 | 5673 | #endif |
3280af22 | 5674 | PL_copline = NOLINE; |
8990e307 | 5675 | LEAVE_SCOPE(floor); |
eb8433b7 NC |
5676 | #ifdef PERL_MAD |
5677 | return pegop; | |
5678 | #endif | |
79072805 LW |
5679 | } |
5680 | ||
5681 | OP * | |
864dbfa3 | 5682 | Perl_newANONLIST(pTHX_ OP *o) |
79072805 | 5683 | { |
93a17b20 | 5684 | return newUNOP(OP_REFGEN, 0, |
11343788 | 5685 | mod(list(convert(OP_ANONLIST, 0, o)), OP_REFGEN)); |
79072805 LW |
5686 | } |
5687 | ||
5688 | OP * | |
864dbfa3 | 5689 | Perl_newANONHASH(pTHX_ OP *o) |
79072805 | 5690 | { |
93a17b20 | 5691 | return newUNOP(OP_REFGEN, 0, |
11343788 | 5692 | mod(list(convert(OP_ANONHASH, 0, o)), OP_REFGEN)); |
a0d0e21e LW |
5693 | } |
5694 | ||
5695 | OP * | |
864dbfa3 | 5696 | Perl_newANONSUB(pTHX_ I32 floor, OP *proto, OP *block) |
a0d0e21e | 5697 | { |
5f66b61c | 5698 | return newANONATTRSUB(floor, proto, NULL, block); |
09bef843 SB |
5699 | } |
5700 | ||
5701 | OP * | |
5702 | Perl_newANONATTRSUB(pTHX_ I32 floor, OP *proto, OP *attrs, OP *block) | |
5703 | { | |
a0d0e21e | 5704 | return newUNOP(OP_REFGEN, 0, |
09bef843 SB |
5705 | newSVOP(OP_ANONCODE, 0, |
5706 | (SV*)newATTRSUB(floor, 0, proto, attrs, block))); | |
79072805 LW |
5707 | } |
5708 | ||
5709 | OP * | |
864dbfa3 | 5710 | Perl_oopsAV(pTHX_ OP *o) |
79072805 | 5711 | { |
27da23d5 | 5712 | dVAR; |
ed6116ce LW |
5713 | switch (o->op_type) { |
5714 | case OP_PADSV: | |
5715 | o->op_type = OP_PADAV; | |
22c35a8c | 5716 | o->op_ppaddr = PL_ppaddr[OP_PADAV]; |
51e247a3 | 5717 | return ref(o, OP_RV2AV); |
b2ffa427 | 5718 | |
ed6116ce | 5719 | case OP_RV2SV: |
79072805 | 5720 | o->op_type = OP_RV2AV; |
22c35a8c | 5721 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
79072805 | 5722 | ref(o, OP_RV2AV); |
ed6116ce LW |
5723 | break; |
5724 | ||
5725 | default: | |
0453d815 | 5726 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 5727 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "oops: oopsAV"); |
ed6116ce LW |
5728 | break; |
5729 | } | |
79072805 LW |
5730 | return o; |
5731 | } | |
5732 | ||
5733 | OP * | |
864dbfa3 | 5734 | Perl_oopsHV(pTHX_ OP *o) |
79072805 | 5735 | { |
27da23d5 | 5736 | dVAR; |
ed6116ce LW |
5737 | switch (o->op_type) { |
5738 | case OP_PADSV: | |
5739 | case OP_PADAV: | |
5740 | o->op_type = OP_PADHV; | |
22c35a8c | 5741 | o->op_ppaddr = PL_ppaddr[OP_PADHV]; |
51e247a3 | 5742 | return ref(o, OP_RV2HV); |
ed6116ce LW |
5743 | |
5744 | case OP_RV2SV: | |
5745 | case OP_RV2AV: | |
79072805 | 5746 | o->op_type = OP_RV2HV; |
22c35a8c | 5747 | o->op_ppaddr = PL_ppaddr[OP_RV2HV]; |
79072805 | 5748 | ref(o, OP_RV2HV); |
ed6116ce LW |
5749 | break; |
5750 | ||
5751 | default: | |
0453d815 | 5752 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 5753 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "oops: oopsHV"); |
ed6116ce LW |
5754 | break; |
5755 | } | |
79072805 LW |
5756 | return o; |
5757 | } | |
5758 | ||
5759 | OP * | |
864dbfa3 | 5760 | Perl_newAVREF(pTHX_ OP *o) |
79072805 | 5761 | { |
27da23d5 | 5762 | dVAR; |
ed6116ce LW |
5763 | if (o->op_type == OP_PADANY) { |
5764 | o->op_type = OP_PADAV; | |
22c35a8c | 5765 | o->op_ppaddr = PL_ppaddr[OP_PADAV]; |
93a17b20 | 5766 | return o; |
ed6116ce | 5767 | } |
a1063b2d | 5768 | else if ((o->op_type == OP_RV2AV || o->op_type == OP_PADAV) |
9014280d PM |
5769 | && ckWARN(WARN_DEPRECATED)) { |
5770 | Perl_warner(aTHX_ packWARN(WARN_DEPRECATED), | |
a1063b2d RH |
5771 | "Using an array as a reference is deprecated"); |
5772 | } | |
79072805 LW |
5773 | return newUNOP(OP_RV2AV, 0, scalar(o)); |
5774 | } | |
5775 | ||
5776 | OP * | |
864dbfa3 | 5777 | Perl_newGVREF(pTHX_ I32 type, OP *o) |
79072805 | 5778 | { |
82092f1d | 5779 | if (type == OP_MAPSTART || type == OP_GREPSTART || type == OP_SORT) |
a0d0e21e | 5780 | return newUNOP(OP_NULL, 0, o); |
748a9306 | 5781 | return ref(newUNOP(OP_RV2GV, OPf_REF, o), type); |
79072805 LW |
5782 | } |
5783 | ||
5784 | OP * | |
864dbfa3 | 5785 | Perl_newHVREF(pTHX_ OP *o) |
79072805 | 5786 | { |
27da23d5 | 5787 | dVAR; |
ed6116ce LW |
5788 | if (o->op_type == OP_PADANY) { |
5789 | o->op_type = OP_PADHV; | |
22c35a8c | 5790 | o->op_ppaddr = PL_ppaddr[OP_PADHV]; |
93a17b20 | 5791 | return o; |
ed6116ce | 5792 | } |
a1063b2d | 5793 | else if ((o->op_type == OP_RV2HV || o->op_type == OP_PADHV) |
9014280d PM |
5794 | && ckWARN(WARN_DEPRECATED)) { |
5795 | Perl_warner(aTHX_ packWARN(WARN_DEPRECATED), | |
a1063b2d RH |
5796 | "Using a hash as a reference is deprecated"); |
5797 | } | |
79072805 LW |
5798 | return newUNOP(OP_RV2HV, 0, scalar(o)); |
5799 | } | |
5800 | ||
5801 | OP * | |
864dbfa3 | 5802 | Perl_newCVREF(pTHX_ I32 flags, OP *o) |
79072805 | 5803 | { |
c07a80fd | 5804 | return newUNOP(OP_RV2CV, flags, scalar(o)); |
79072805 LW |
5805 | } |
5806 | ||
5807 | OP * | |
864dbfa3 | 5808 | Perl_newSVREF(pTHX_ OP *o) |
79072805 | 5809 | { |
27da23d5 | 5810 | dVAR; |
ed6116ce LW |
5811 | if (o->op_type == OP_PADANY) { |
5812 | o->op_type = OP_PADSV; | |
22c35a8c | 5813 | o->op_ppaddr = PL_ppaddr[OP_PADSV]; |
93a17b20 | 5814 | return o; |
ed6116ce | 5815 | } |
224a4551 MB |
5816 | else if (o->op_type == OP_THREADSV && !(o->op_flags & OPpDONE_SVREF)) { |
5817 | o->op_flags |= OPpDONE_SVREF; | |
a863c7d1 | 5818 | return o; |
224a4551 | 5819 | } |
79072805 LW |
5820 | return newUNOP(OP_RV2SV, 0, scalar(o)); |
5821 | } | |
5822 | ||
61b743bb DM |
5823 | /* Check routines. See the comments at the top of this file for details |
5824 | * on when these are called */ | |
79072805 LW |
5825 | |
5826 | OP * | |
cea2e8a9 | 5827 | Perl_ck_anoncode(pTHX_ OP *o) |
5f05dabc | 5828 | { |
dd2155a4 | 5829 | cSVOPo->op_targ = pad_add_anon(cSVOPo->op_sv, o->op_type); |
eb8433b7 | 5830 | if (!PL_madskills) |
1d866c12 | 5831 | cSVOPo->op_sv = NULL; |
5dc0d613 | 5832 | return o; |
5f05dabc | 5833 | } |
5834 | ||
5835 | OP * | |
cea2e8a9 | 5836 | Perl_ck_bitop(pTHX_ OP *o) |
55497cff | 5837 | { |
97aff369 | 5838 | dVAR; |
276b2a0c RGS |
5839 | #define OP_IS_NUMCOMPARE(op) \ |
5840 | ((op) == OP_LT || (op) == OP_I_LT || \ | |
5841 | (op) == OP_GT || (op) == OP_I_GT || \ | |
5842 | (op) == OP_LE || (op) == OP_I_LE || \ | |
5843 | (op) == OP_GE || (op) == OP_I_GE || \ | |
5844 | (op) == OP_EQ || (op) == OP_I_EQ || \ | |
5845 | (op) == OP_NE || (op) == OP_I_NE || \ | |
5846 | (op) == OP_NCMP || (op) == OP_I_NCMP) | |
d5ec2987 | 5847 | o->op_private = (U8)(PL_hints & HINT_INTEGER); |
2b84528b RGS |
5848 | if (!(o->op_flags & OPf_STACKED) /* Not an assignment */ |
5849 | && (o->op_type == OP_BIT_OR | |
5850 | || o->op_type == OP_BIT_AND | |
5851 | || o->op_type == OP_BIT_XOR)) | |
276b2a0c | 5852 | { |
1df70142 AL |
5853 | const OP * const left = cBINOPo->op_first; |
5854 | const OP * const right = left->op_sibling; | |
96a925ab YST |
5855 | if ((OP_IS_NUMCOMPARE(left->op_type) && |
5856 | (left->op_flags & OPf_PARENS) == 0) || | |
5857 | (OP_IS_NUMCOMPARE(right->op_type) && | |
5858 | (right->op_flags & OPf_PARENS) == 0)) | |
276b2a0c RGS |
5859 | if (ckWARN(WARN_PRECEDENCE)) |
5860 | Perl_warner(aTHX_ packWARN(WARN_PRECEDENCE), | |
5861 | "Possible precedence problem on bitwise %c operator", | |
5862 | o->op_type == OP_BIT_OR ? '|' | |
5863 | : o->op_type == OP_BIT_AND ? '&' : '^' | |
5864 | ); | |
5865 | } | |
5dc0d613 | 5866 | return o; |
55497cff | 5867 | } |
5868 | ||
5869 | OP * | |
cea2e8a9 | 5870 | Perl_ck_concat(pTHX_ OP *o) |
79072805 | 5871 | { |
0bd48802 | 5872 | const OP * const kid = cUNOPo->op_first; |
96a5add6 | 5873 | PERL_UNUSED_CONTEXT; |
df91b2c5 AE |
5874 | if (kid->op_type == OP_CONCAT && !(kid->op_private & OPpTARGET_MY) && |
5875 | !(kUNOP->op_first->op_flags & OPf_MOD)) | |
0165acc7 | 5876 | o->op_flags |= OPf_STACKED; |
11343788 | 5877 | return o; |
79072805 LW |
5878 | } |
5879 | ||
5880 | OP * | |
cea2e8a9 | 5881 | Perl_ck_spair(pTHX_ OP *o) |
79072805 | 5882 | { |
27da23d5 | 5883 | dVAR; |
11343788 | 5884 | if (o->op_flags & OPf_KIDS) { |
79072805 | 5885 | OP* newop; |
a0d0e21e | 5886 | OP* kid; |
6867be6d | 5887 | const OPCODE type = o->op_type; |
5dc0d613 | 5888 | o = modkids(ck_fun(o), type); |
11343788 | 5889 | kid = cUNOPo->op_first; |
a0d0e21e | 5890 | newop = kUNOP->op_first->op_sibling; |
1496a290 AL |
5891 | if (newop) { |
5892 | const OPCODE type = newop->op_type; | |
5893 | if (newop->op_sibling || !(PL_opargs[type] & OA_RETSCALAR) || | |
5894 | type == OP_PADAV || type == OP_PADHV || | |
5895 | type == OP_RV2AV || type == OP_RV2HV) | |
5896 | return o; | |
a0d0e21e | 5897 | } |
eb8433b7 NC |
5898 | #ifdef PERL_MAD |
5899 | op_getmad(kUNOP->op_first,newop,'K'); | |
5900 | #else | |
a0d0e21e | 5901 | op_free(kUNOP->op_first); |
eb8433b7 | 5902 | #endif |
a0d0e21e LW |
5903 | kUNOP->op_first = newop; |
5904 | } | |
22c35a8c | 5905 | o->op_ppaddr = PL_ppaddr[++o->op_type]; |
11343788 | 5906 | return ck_fun(o); |
a0d0e21e LW |
5907 | } |
5908 | ||
5909 | OP * | |
cea2e8a9 | 5910 | Perl_ck_delete(pTHX_ OP *o) |
a0d0e21e | 5911 | { |
11343788 | 5912 | o = ck_fun(o); |
5dc0d613 | 5913 | o->op_private = 0; |
11343788 | 5914 | if (o->op_flags & OPf_KIDS) { |
551405c4 | 5915 | OP * const kid = cUNOPo->op_first; |
01020589 GS |
5916 | switch (kid->op_type) { |
5917 | case OP_ASLICE: | |
5918 | o->op_flags |= OPf_SPECIAL; | |
5919 | /* FALL THROUGH */ | |
5920 | case OP_HSLICE: | |
5dc0d613 | 5921 | o->op_private |= OPpSLICE; |
01020589 GS |
5922 | break; |
5923 | case OP_AELEM: | |
5924 | o->op_flags |= OPf_SPECIAL; | |
5925 | /* FALL THROUGH */ | |
5926 | case OP_HELEM: | |
5927 | break; | |
5928 | default: | |
5929 | Perl_croak(aTHX_ "%s argument is not a HASH or ARRAY element or slice", | |
53e06cf0 | 5930 | OP_DESC(o)); |
01020589 | 5931 | } |
93c66552 | 5932 | op_null(kid); |
79072805 | 5933 | } |
11343788 | 5934 | return o; |
79072805 LW |
5935 | } |
5936 | ||
5937 | OP * | |
96e176bf CL |
5938 | Perl_ck_die(pTHX_ OP *o) |
5939 | { | |
5940 | #ifdef VMS | |
5941 | if (VMSISH_HUSHED) o->op_private |= OPpHUSH_VMSISH; | |
5942 | #endif | |
5943 | return ck_fun(o); | |
5944 | } | |
5945 | ||
5946 | OP * | |
cea2e8a9 | 5947 | Perl_ck_eof(pTHX_ OP *o) |
79072805 | 5948 | { |
97aff369 | 5949 | dVAR; |
79072805 | 5950 | |
11343788 MB |
5951 | if (o->op_flags & OPf_KIDS) { |
5952 | if (cLISTOPo->op_first->op_type == OP_STUB) { | |
1d866c12 AL |
5953 | OP * const newop |
5954 | = newUNOP(o->op_type, OPf_SPECIAL, newGVOP(OP_GV, 0, PL_argvgv)); | |
eb8433b7 NC |
5955 | #ifdef PERL_MAD |
5956 | op_getmad(o,newop,'O'); | |
5957 | #else | |
11343788 | 5958 | op_free(o); |
eb8433b7 NC |
5959 | #endif |
5960 | o = newop; | |
8990e307 | 5961 | } |
11343788 | 5962 | return ck_fun(o); |
79072805 | 5963 | } |
11343788 | 5964 | return o; |
79072805 LW |
5965 | } |
5966 | ||
5967 | OP * | |
cea2e8a9 | 5968 | Perl_ck_eval(pTHX_ OP *o) |
79072805 | 5969 | { |
27da23d5 | 5970 | dVAR; |
3280af22 | 5971 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 5972 | if (o->op_flags & OPf_KIDS) { |
46c461b5 | 5973 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
79072805 | 5974 | |
93a17b20 | 5975 | if (!kid) { |
11343788 | 5976 | o->op_flags &= ~OPf_KIDS; |
93c66552 | 5977 | op_null(o); |
79072805 | 5978 | } |
b14574b4 | 5979 | else if (kid->op_type == OP_LINESEQ || kid->op_type == OP_STUB) { |
79072805 | 5980 | LOGOP *enter; |
eb8433b7 | 5981 | #ifdef PERL_MAD |
1d866c12 | 5982 | OP* const oldo = o; |
eb8433b7 | 5983 | #endif |
79072805 | 5984 | |
11343788 | 5985 | cUNOPo->op_first = 0; |
eb8433b7 | 5986 | #ifndef PERL_MAD |
11343788 | 5987 | op_free(o); |
eb8433b7 | 5988 | #endif |
79072805 | 5989 | |
b7dc083c | 5990 | NewOp(1101, enter, 1, LOGOP); |
79072805 | 5991 | enter->op_type = OP_ENTERTRY; |
22c35a8c | 5992 | enter->op_ppaddr = PL_ppaddr[OP_ENTERTRY]; |
79072805 LW |
5993 | enter->op_private = 0; |
5994 | ||
5995 | /* establish postfix order */ | |
5996 | enter->op_next = (OP*)enter; | |
5997 | ||
11343788 MB |
5998 | o = prepend_elem(OP_LINESEQ, (OP*)enter, (OP*)kid); |
5999 | o->op_type = OP_LEAVETRY; | |
22c35a8c | 6000 | o->op_ppaddr = PL_ppaddr[OP_LEAVETRY]; |
11343788 | 6001 | enter->op_other = o; |
eb8433b7 | 6002 | op_getmad(oldo,o,'O'); |
11343788 | 6003 | return o; |
79072805 | 6004 | } |
b5c19bd7 | 6005 | else { |
473986ff | 6006 | scalar((OP*)kid); |
b5c19bd7 DM |
6007 | PL_cv_has_eval = 1; |
6008 | } | |
79072805 LW |
6009 | } |
6010 | else { | |
eb8433b7 | 6011 | #ifdef PERL_MAD |
1d866c12 | 6012 | OP* const oldo = o; |
eb8433b7 | 6013 | #else |
11343788 | 6014 | op_free(o); |
eb8433b7 | 6015 | #endif |
54b9620d | 6016 | o = newUNOP(OP_ENTEREVAL, 0, newDEFSVOP()); |
eb8433b7 | 6017 | op_getmad(oldo,o,'O'); |
79072805 | 6018 | } |
3280af22 | 6019 | o->op_targ = (PADOFFSET)PL_hints; |
7168684c | 6020 | if ((PL_hints & HINT_LOCALIZE_HH) != 0 && GvHV(PL_hintgv)) { |
0d863452 | 6021 | /* Store a copy of %^H that pp_entereval can pick up */ |
5b9c0671 NC |
6022 | OP *hhop = newSVOP(OP_CONST, 0, |
6023 | (SV*)Perl_hv_copy_hints_hv(aTHX_ GvHV(PL_hintgv))); | |
0d863452 RH |
6024 | cUNOPo->op_first->op_sibling = hhop; |
6025 | o->op_private |= OPpEVAL_HAS_HH; | |
6026 | } | |
11343788 | 6027 | return o; |
79072805 LW |
6028 | } |
6029 | ||
6030 | OP * | |
d98f61e7 GS |
6031 | Perl_ck_exit(pTHX_ OP *o) |
6032 | { | |
6033 | #ifdef VMS | |
551405c4 | 6034 | HV * const table = GvHV(PL_hintgv); |
d98f61e7 | 6035 | if (table) { |
a4fc7abc | 6036 | SV * const * const svp = hv_fetchs(table, "vmsish_exit", FALSE); |
d98f61e7 GS |
6037 | if (svp && *svp && SvTRUE(*svp)) |
6038 | o->op_private |= OPpEXIT_VMSISH; | |
6039 | } | |
96e176bf | 6040 | if (VMSISH_HUSHED) o->op_private |= OPpHUSH_VMSISH; |
d98f61e7 GS |
6041 | #endif |
6042 | return ck_fun(o); | |
6043 | } | |
6044 | ||
6045 | OP * | |
cea2e8a9 | 6046 | Perl_ck_exec(pTHX_ OP *o) |
79072805 | 6047 | { |
11343788 | 6048 | if (o->op_flags & OPf_STACKED) { |
6867be6d | 6049 | OP *kid; |
11343788 MB |
6050 | o = ck_fun(o); |
6051 | kid = cUNOPo->op_first->op_sibling; | |
8990e307 | 6052 | if (kid->op_type == OP_RV2GV) |
93c66552 | 6053 | op_null(kid); |
79072805 | 6054 | } |
463ee0b2 | 6055 | else |
11343788 MB |
6056 | o = listkids(o); |
6057 | return o; | |
79072805 LW |
6058 | } |
6059 | ||
6060 | OP * | |
cea2e8a9 | 6061 | Perl_ck_exists(pTHX_ OP *o) |
5f05dabc | 6062 | { |
97aff369 | 6063 | dVAR; |
5196be3e MB |
6064 | o = ck_fun(o); |
6065 | if (o->op_flags & OPf_KIDS) { | |
46c461b5 | 6066 | OP * const kid = cUNOPo->op_first; |
afebc493 GS |
6067 | if (kid->op_type == OP_ENTERSUB) { |
6068 | (void) ref(kid, o->op_type); | |
6069 | if (kid->op_type != OP_RV2CV && !PL_error_count) | |
6070 | Perl_croak(aTHX_ "%s argument is not a subroutine name", | |
53e06cf0 | 6071 | OP_DESC(o)); |
afebc493 GS |
6072 | o->op_private |= OPpEXISTS_SUB; |
6073 | } | |
6074 | else if (kid->op_type == OP_AELEM) | |
01020589 GS |
6075 | o->op_flags |= OPf_SPECIAL; |
6076 | else if (kid->op_type != OP_HELEM) | |
6077 | Perl_croak(aTHX_ "%s argument is not a HASH or ARRAY element", | |
53e06cf0 | 6078 | OP_DESC(o)); |
93c66552 | 6079 | op_null(kid); |
5f05dabc | 6080 | } |
5196be3e | 6081 | return o; |
5f05dabc | 6082 | } |
6083 | ||
79072805 | 6084 | OP * |
cea2e8a9 | 6085 | Perl_ck_rvconst(pTHX_ register OP *o) |
79072805 | 6086 | { |
27da23d5 | 6087 | dVAR; |
0bd48802 | 6088 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
85e6fe83 | 6089 | |
3280af22 | 6090 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
e26df76a NC |
6091 | if (o->op_type == OP_RV2CV) |
6092 | o->op_private &= ~1; | |
6093 | ||
79072805 | 6094 | if (kid->op_type == OP_CONST) { |
44a8e56a | 6095 | int iscv; |
6096 | GV *gv; | |
504618e9 | 6097 | SV * const kidsv = kid->op_sv; |
44a8e56a | 6098 | |
779c5bc9 GS |
6099 | /* Is it a constant from cv_const_sv()? */ |
6100 | if (SvROK(kidsv) && SvREADONLY(kidsv)) { | |
0bd48802 | 6101 | SV * const rsv = SvRV(kidsv); |
42d0e0b7 | 6102 | const svtype type = SvTYPE(rsv); |
bd61b366 | 6103 | const char *badtype = NULL; |
779c5bc9 GS |
6104 | |
6105 | switch (o->op_type) { | |
6106 | case OP_RV2SV: | |
42d0e0b7 | 6107 | if (type > SVt_PVMG) |
779c5bc9 GS |
6108 | badtype = "a SCALAR"; |
6109 | break; | |
6110 | case OP_RV2AV: | |
42d0e0b7 | 6111 | if (type != SVt_PVAV) |
779c5bc9 GS |
6112 | badtype = "an ARRAY"; |
6113 | break; | |
6114 | case OP_RV2HV: | |
42d0e0b7 | 6115 | if (type != SVt_PVHV) |
779c5bc9 | 6116 | badtype = "a HASH"; |
779c5bc9 GS |
6117 | break; |
6118 | case OP_RV2CV: | |
42d0e0b7 | 6119 | if (type != SVt_PVCV) |
779c5bc9 GS |
6120 | badtype = "a CODE"; |
6121 | break; | |
6122 | } | |
6123 | if (badtype) | |
cea2e8a9 | 6124 | Perl_croak(aTHX_ "Constant is not %s reference", badtype); |
779c5bc9 GS |
6125 | return o; |
6126 | } | |
ce10b5d1 RGS |
6127 | else if ((o->op_type == OP_RV2HV || o->op_type == OP_RV2SV) && |
6128 | (PL_hints & HINT_STRICT_REFS) && SvPOK(kidsv)) { | |
6129 | /* If this is an access to a stash, disable "strict refs", because | |
6130 | * stashes aren't auto-vivified at compile-time (unless we store | |
6131 | * symbols in them), and we don't want to produce a run-time | |
6132 | * stricture error when auto-vivifying the stash. */ | |
6133 | const char *s = SvPV_nolen(kidsv); | |
6134 | const STRLEN l = SvCUR(kidsv); | |
6135 | if (l > 1 && s[l-1] == ':' && s[l-2] == ':') | |
6136 | o->op_private &= ~HINT_STRICT_REFS; | |
6137 | } | |
6138 | if ((o->op_private & HINT_STRICT_REFS) && (kid->op_private & OPpCONST_BARE)) { | |
5f66b61c | 6139 | const char *badthing; |
5dc0d613 | 6140 | switch (o->op_type) { |
44a8e56a | 6141 | case OP_RV2SV: |
6142 | badthing = "a SCALAR"; | |
6143 | break; | |
6144 | case OP_RV2AV: | |
6145 | badthing = "an ARRAY"; | |
6146 | break; | |
6147 | case OP_RV2HV: | |
6148 | badthing = "a HASH"; | |
6149 | break; | |
5f66b61c AL |
6150 | default: |
6151 | badthing = NULL; | |
6152 | break; | |
44a8e56a | 6153 | } |
6154 | if (badthing) | |
1c846c1f | 6155 | Perl_croak(aTHX_ |
95b63a38 JH |
6156 | "Can't use bareword (\"%"SVf"\") as %s ref while \"strict refs\" in use", |
6157 | (void*)kidsv, badthing); | |
44a8e56a | 6158 | } |
93233ece CS |
6159 | /* |
6160 | * This is a little tricky. We only want to add the symbol if we | |
6161 | * didn't add it in the lexer. Otherwise we get duplicate strict | |
6162 | * warnings. But if we didn't add it in the lexer, we must at | |
6163 | * least pretend like we wanted to add it even if it existed before, | |
6164 | * or we get possible typo warnings. OPpCONST_ENTERED says | |
6165 | * whether the lexer already added THIS instance of this symbol. | |
6166 | */ | |
5196be3e | 6167 | iscv = (o->op_type == OP_RV2CV) * 2; |
93233ece | 6168 | do { |
7a5fd60d | 6169 | gv = gv_fetchsv(kidsv, |
748a9306 | 6170 | iscv | !(kid->op_private & OPpCONST_ENTERED), |
a0d0e21e LW |
6171 | iscv |
6172 | ? SVt_PVCV | |
11343788 | 6173 | : o->op_type == OP_RV2SV |
a0d0e21e | 6174 | ? SVt_PV |
11343788 | 6175 | : o->op_type == OP_RV2AV |
a0d0e21e | 6176 | ? SVt_PVAV |
11343788 | 6177 | : o->op_type == OP_RV2HV |
a0d0e21e LW |
6178 | ? SVt_PVHV |
6179 | : SVt_PVGV); | |
93233ece CS |
6180 | } while (!gv && !(kid->op_private & OPpCONST_ENTERED) && !iscv++); |
6181 | if (gv) { | |
6182 | kid->op_type = OP_GV; | |
6183 | SvREFCNT_dec(kid->op_sv); | |
350de78d | 6184 | #ifdef USE_ITHREADS |
638eceb6 | 6185 | /* XXX hack: dependence on sizeof(PADOP) <= sizeof(SVOP) */ |
350de78d | 6186 | kPADOP->op_padix = pad_alloc(OP_GV, SVs_PADTMP); |
dd2155a4 | 6187 | SvREFCNT_dec(PAD_SVl(kPADOP->op_padix)); |
743e66e6 | 6188 | GvIN_PAD_on(gv); |
b37c2d43 | 6189 | PAD_SETSV(kPADOP->op_padix, (SV*) SvREFCNT_inc_simple_NN(gv)); |
350de78d | 6190 | #else |
b37c2d43 | 6191 | kid->op_sv = SvREFCNT_inc_simple_NN(gv); |
350de78d | 6192 | #endif |
23f1ca44 | 6193 | kid->op_private = 0; |
76cd736e | 6194 | kid->op_ppaddr = PL_ppaddr[OP_GV]; |
a0d0e21e | 6195 | } |
79072805 | 6196 | } |
11343788 | 6197 | return o; |
79072805 LW |
6198 | } |
6199 | ||
6200 | OP * | |
cea2e8a9 | 6201 | Perl_ck_ftst(pTHX_ OP *o) |
79072805 | 6202 | { |
27da23d5 | 6203 | dVAR; |
6867be6d | 6204 | const I32 type = o->op_type; |
79072805 | 6205 | |
d0dca557 | 6206 | if (o->op_flags & OPf_REF) { |
6f207bd3 | 6207 | NOOP; |
d0dca557 JD |
6208 | } |
6209 | else if (o->op_flags & OPf_KIDS && cUNOPo->op_first->op_type != OP_STUB) { | |
551405c4 | 6210 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
1496a290 | 6211 | const OPCODE kidtype = kid->op_type; |
79072805 | 6212 | |
1496a290 | 6213 | if (kidtype == OP_CONST && (kid->op_private & OPpCONST_BARE)) { |
551405c4 | 6214 | OP * const newop = newGVOP(type, OPf_REF, |
f776e3cd | 6215 | gv_fetchsv(kid->op_sv, GV_ADD, SVt_PVIO)); |
eb8433b7 NC |
6216 | #ifdef PERL_MAD |
6217 | op_getmad(o,newop,'O'); | |
6218 | #else | |
11343788 | 6219 | op_free(o); |
eb8433b7 | 6220 | #endif |
1d866c12 | 6221 | return newop; |
79072805 | 6222 | } |
1d866c12 | 6223 | if ((PL_hints & HINT_FILETEST_ACCESS) && OP_IS_FILETEST_ACCESS(o)) |
1af34c76 | 6224 | o->op_private |= OPpFT_ACCESS; |
1496a290 AL |
6225 | if (PL_check[kidtype] == MEMBER_TO_FPTR(Perl_ck_ftst) |
6226 | && kidtype != OP_STAT && kidtype != OP_LSTAT) | |
fbb0b3b3 | 6227 | o->op_private |= OPpFT_STACKED; |
79072805 LW |
6228 | } |
6229 | else { | |
eb8433b7 | 6230 | #ifdef PERL_MAD |
1d866c12 | 6231 | OP* const oldo = o; |
eb8433b7 | 6232 | #else |
11343788 | 6233 | op_free(o); |
eb8433b7 | 6234 | #endif |
79072805 | 6235 | if (type == OP_FTTTY) |
8fde6460 | 6236 | o = newGVOP(type, OPf_REF, PL_stdingv); |
79072805 | 6237 | else |
d0dca557 | 6238 | o = newUNOP(type, 0, newDEFSVOP()); |
eb8433b7 | 6239 | op_getmad(oldo,o,'O'); |
79072805 | 6240 | } |
11343788 | 6241 | return o; |
79072805 LW |
6242 | } |
6243 | ||
6244 | OP * | |
cea2e8a9 | 6245 | Perl_ck_fun(pTHX_ OP *o) |
79072805 | 6246 | { |
97aff369 | 6247 | dVAR; |
6867be6d | 6248 | const int type = o->op_type; |
22c35a8c | 6249 | register I32 oa = PL_opargs[type] >> OASHIFT; |
aeea060c | 6250 | |
11343788 | 6251 | if (o->op_flags & OPf_STACKED) { |
79072805 LW |
6252 | if ((oa & OA_OPTIONAL) && (oa >> 4) && !((oa >> 4) & OA_OPTIONAL)) |
6253 | oa &= ~OA_OPTIONAL; | |
6254 | else | |
11343788 | 6255 | return no_fh_allowed(o); |
79072805 LW |
6256 | } |
6257 | ||
11343788 | 6258 | if (o->op_flags & OPf_KIDS) { |
6867be6d AL |
6259 | OP **tokid = &cLISTOPo->op_first; |
6260 | register OP *kid = cLISTOPo->op_first; | |
6261 | OP *sibl; | |
6262 | I32 numargs = 0; | |
6263 | ||
8990e307 | 6264 | if (kid->op_type == OP_PUSHMARK || |
155aba94 | 6265 | (kid->op_type == OP_NULL && kid->op_targ == OP_PUSHMARK)) |
8990e307 | 6266 | { |
79072805 LW |
6267 | tokid = &kid->op_sibling; |
6268 | kid = kid->op_sibling; | |
6269 | } | |
22c35a8c | 6270 | if (!kid && PL_opargs[type] & OA_DEFGV) |
54b9620d | 6271 | *tokid = kid = newDEFSVOP(); |
79072805 LW |
6272 | |
6273 | while (oa && kid) { | |
6274 | numargs++; | |
6275 | sibl = kid->op_sibling; | |
eb8433b7 NC |
6276 | #ifdef PERL_MAD |
6277 | if (!sibl && kid->op_type == OP_STUB) { | |
6278 | numargs--; | |
6279 | break; | |
6280 | } | |
6281 | #endif | |
79072805 LW |
6282 | switch (oa & 7) { |
6283 | case OA_SCALAR: | |
62c18ce2 GS |
6284 | /* list seen where single (scalar) arg expected? */ |
6285 | if (numargs == 1 && !(oa >> 4) | |
6286 | && kid->op_type == OP_LIST && type != OP_SCALAR) | |
6287 | { | |
6288 | return too_many_arguments(o,PL_op_desc[type]); | |
6289 | } | |
79072805 LW |
6290 | scalar(kid); |
6291 | break; | |
6292 | case OA_LIST: | |
6293 | if (oa < 16) { | |
6294 | kid = 0; | |
6295 | continue; | |
6296 | } | |
6297 | else | |
6298 | list(kid); | |
6299 | break; | |
6300 | case OA_AVREF: | |
936edb8b | 6301 | if ((type == OP_PUSH || type == OP_UNSHIFT) |
f87c3213 | 6302 | && !kid->op_sibling && ckWARN(WARN_SYNTAX)) |
9014280d | 6303 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
de4864e4 | 6304 | "Useless use of %s with no values", |
936edb8b | 6305 | PL_op_desc[type]); |
b2ffa427 | 6306 | |
79072805 | 6307 | if (kid->op_type == OP_CONST && |
62c18ce2 GS |
6308 | (kid->op_private & OPpCONST_BARE)) |
6309 | { | |
551405c4 | 6310 | OP * const newop = newAVREF(newGVOP(OP_GV, 0, |
f776e3cd | 6311 | gv_fetchsv(((SVOP*)kid)->op_sv, GV_ADD, SVt_PVAV) )); |
12bcd1a6 PM |
6312 | if (ckWARN2(WARN_DEPRECATED, WARN_SYNTAX)) |
6313 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), | |
7a5fd60d | 6314 | "Array @%"SVf" missing the @ in argument %"IVdf" of %s()", |
95b63a38 | 6315 | (void*)((SVOP*)kid)->op_sv, (IV)numargs, PL_op_desc[type]); |
eb8433b7 NC |
6316 | #ifdef PERL_MAD |
6317 | op_getmad(kid,newop,'K'); | |
6318 | #else | |
79072805 | 6319 | op_free(kid); |
eb8433b7 | 6320 | #endif |
79072805 LW |
6321 | kid = newop; |
6322 | kid->op_sibling = sibl; | |
6323 | *tokid = kid; | |
6324 | } | |
8990e307 | 6325 | else if (kid->op_type != OP_RV2AV && kid->op_type != OP_PADAV) |
35cd451c | 6326 | bad_type(numargs, "array", PL_op_desc[type], kid); |
a0d0e21e | 6327 | mod(kid, type); |
79072805 LW |
6328 | break; |
6329 | case OA_HVREF: | |
6330 | if (kid->op_type == OP_CONST && | |
62c18ce2 GS |
6331 | (kid->op_private & OPpCONST_BARE)) |
6332 | { | |
551405c4 | 6333 | OP * const newop = newHVREF(newGVOP(OP_GV, 0, |
f776e3cd | 6334 | gv_fetchsv(((SVOP*)kid)->op_sv, GV_ADD, SVt_PVHV) )); |
12bcd1a6 PM |
6335 | if (ckWARN2(WARN_DEPRECATED, WARN_SYNTAX)) |
6336 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), | |
7a5fd60d | 6337 | "Hash %%%"SVf" missing the %% in argument %"IVdf" of %s()", |
95b63a38 | 6338 | (void*)((SVOP*)kid)->op_sv, (IV)numargs, PL_op_desc[type]); |
eb8433b7 NC |
6339 | #ifdef PERL_MAD |
6340 | op_getmad(kid,newop,'K'); | |
6341 | #else | |
79072805 | 6342 | op_free(kid); |
eb8433b7 | 6343 | #endif |
79072805 LW |
6344 | kid = newop; |
6345 | kid->op_sibling = sibl; | |
6346 | *tokid = kid; | |
6347 | } | |
8990e307 | 6348 | else if (kid->op_type != OP_RV2HV && kid->op_type != OP_PADHV) |
35cd451c | 6349 | bad_type(numargs, "hash", PL_op_desc[type], kid); |
a0d0e21e | 6350 | mod(kid, type); |
79072805 LW |
6351 | break; |
6352 | case OA_CVREF: | |
6353 | { | |
551405c4 | 6354 | OP * const newop = newUNOP(OP_NULL, 0, kid); |
79072805 LW |
6355 | kid->op_sibling = 0; |
6356 | linklist(kid); | |
6357 | newop->op_next = newop; | |
6358 | kid = newop; | |
6359 | kid->op_sibling = sibl; | |
6360 | *tokid = kid; | |
6361 | } | |
6362 | break; | |
6363 | case OA_FILEREF: | |
c340be78 | 6364 | if (kid->op_type != OP_GV && kid->op_type != OP_RV2GV) { |
79072805 | 6365 | if (kid->op_type == OP_CONST && |
62c18ce2 GS |
6366 | (kid->op_private & OPpCONST_BARE)) |
6367 | { | |
0bd48802 | 6368 | OP * const newop = newGVOP(OP_GV, 0, |
f776e3cd | 6369 | gv_fetchsv(((SVOP*)kid)->op_sv, GV_ADD, SVt_PVIO)); |
afbdacea | 6370 | if (!(o->op_private & 1) && /* if not unop */ |
8a996ce8 | 6371 | kid == cLISTOPo->op_last) |
364daeac | 6372 | cLISTOPo->op_last = newop; |
eb8433b7 NC |
6373 | #ifdef PERL_MAD |
6374 | op_getmad(kid,newop,'K'); | |
6375 | #else | |
79072805 | 6376 | op_free(kid); |
eb8433b7 | 6377 | #endif |
79072805 LW |
6378 | kid = newop; |
6379 | } | |
1ea32a52 GS |
6380 | else if (kid->op_type == OP_READLINE) { |
6381 | /* neophyte patrol: open(<FH>), close(<FH>) etc. */ | |
53e06cf0 | 6382 | bad_type(numargs, "HANDLE", OP_DESC(o), kid); |
1ea32a52 | 6383 | } |
79072805 | 6384 | else { |
35cd451c | 6385 | I32 flags = OPf_SPECIAL; |
a6c40364 | 6386 | I32 priv = 0; |
2c8ac474 GS |
6387 | PADOFFSET targ = 0; |
6388 | ||
35cd451c | 6389 | /* is this op a FH constructor? */ |
853846ea | 6390 | if (is_handle_constructor(o,numargs)) { |
bd61b366 | 6391 | const char *name = NULL; |
dd2155a4 | 6392 | STRLEN len = 0; |
2c8ac474 GS |
6393 | |
6394 | flags = 0; | |
6395 | /* Set a flag to tell rv2gv to vivify | |
853846ea NIS |
6396 | * need to "prove" flag does not mean something |
6397 | * else already - NI-S 1999/05/07 | |
2c8ac474 GS |
6398 | */ |
6399 | priv = OPpDEREF; | |
6400 | if (kid->op_type == OP_PADSV) { | |
dd2155a4 DM |
6401 | name = PAD_COMPNAME_PV(kid->op_targ); |
6402 | /* SvCUR of a pad namesv can't be trusted | |
6403 | * (see PL_generation), so calc its length | |
6404 | * manually */ | |
6405 | if (name) | |
6406 | len = strlen(name); | |
6407 | ||
2c8ac474 GS |
6408 | } |
6409 | else if (kid->op_type == OP_RV2SV | |
6410 | && kUNOP->op_first->op_type == OP_GV) | |
6411 | { | |
0bd48802 | 6412 | GV * const gv = cGVOPx_gv(kUNOP->op_first); |
2c8ac474 GS |
6413 | name = GvNAME(gv); |
6414 | len = GvNAMELEN(gv); | |
6415 | } | |
afd1915d GS |
6416 | else if (kid->op_type == OP_AELEM |
6417 | || kid->op_type == OP_HELEM) | |
6418 | { | |
735fec84 | 6419 | OP *firstop; |
551405c4 | 6420 | OP *op = ((BINOP*)kid)->op_first; |
a4fc7abc | 6421 | name = NULL; |
551405c4 | 6422 | if (op) { |
a0714e2c | 6423 | SV *tmpstr = NULL; |
551405c4 | 6424 | const char * const a = |
0c4b0a3f JH |
6425 | kid->op_type == OP_AELEM ? |
6426 | "[]" : "{}"; | |
6427 | if (((op->op_type == OP_RV2AV) || | |
6428 | (op->op_type == OP_RV2HV)) && | |
735fec84 RGS |
6429 | (firstop = ((UNOP*)op)->op_first) && |
6430 | (firstop->op_type == OP_GV)) { | |
0c4b0a3f | 6431 | /* packagevar $a[] or $h{} */ |
735fec84 | 6432 | GV * const gv = cGVOPx_gv(firstop); |
0c4b0a3f JH |
6433 | if (gv) |
6434 | tmpstr = | |
6435 | Perl_newSVpvf(aTHX_ | |
6436 | "%s%c...%c", | |
6437 | GvNAME(gv), | |
6438 | a[0], a[1]); | |
6439 | } | |
6440 | else if (op->op_type == OP_PADAV | |
6441 | || op->op_type == OP_PADHV) { | |
6442 | /* lexicalvar $a[] or $h{} */ | |
551405c4 | 6443 | const char * const padname = |
0c4b0a3f JH |
6444 | PAD_COMPNAME_PV(op->op_targ); |
6445 | if (padname) | |
6446 | tmpstr = | |
6447 | Perl_newSVpvf(aTHX_ | |
6448 | "%s%c...%c", | |
6449 | padname + 1, | |
6450 | a[0], a[1]); | |
0c4b0a3f JH |
6451 | } |
6452 | if (tmpstr) { | |
93524f2b | 6453 | name = SvPV_const(tmpstr, len); |
0c4b0a3f JH |
6454 | sv_2mortal(tmpstr); |
6455 | } | |
6456 | } | |
6457 | if (!name) { | |
6458 | name = "__ANONIO__"; | |
6459 | len = 10; | |
6460 | } | |
6461 | mod(kid, type); | |
afd1915d | 6462 | } |
2c8ac474 GS |
6463 | if (name) { |
6464 | SV *namesv; | |
6465 | targ = pad_alloc(OP_RV2GV, SVs_PADTMP); | |
dd2155a4 | 6466 | namesv = PAD_SVl(targ); |
862a34c6 | 6467 | SvUPGRADE(namesv, SVt_PV); |
2c8ac474 GS |
6468 | if (*name != '$') |
6469 | sv_setpvn(namesv, "$", 1); | |
6470 | sv_catpvn(namesv, name, len); | |
6471 | } | |
853846ea | 6472 | } |
79072805 | 6473 | kid->op_sibling = 0; |
35cd451c | 6474 | kid = newUNOP(OP_RV2GV, flags, scalar(kid)); |
2c8ac474 GS |
6475 | kid->op_targ = targ; |
6476 | kid->op_private |= priv; | |
79072805 LW |
6477 | } |
6478 | kid->op_sibling = sibl; | |
6479 | *tokid = kid; | |
6480 | } | |
6481 | scalar(kid); | |
6482 | break; | |
6483 | case OA_SCALARREF: | |
a0d0e21e | 6484 | mod(scalar(kid), type); |
79072805 LW |
6485 | break; |
6486 | } | |
6487 | oa >>= 4; | |
6488 | tokid = &kid->op_sibling; | |
6489 | kid = kid->op_sibling; | |
6490 | } | |
eb8433b7 NC |
6491 | #ifdef PERL_MAD |
6492 | if (kid && kid->op_type != OP_STUB) | |
6493 | return too_many_arguments(o,OP_DESC(o)); | |
6494 | o->op_private |= numargs; | |
6495 | #else | |
6496 | /* FIXME - should the numargs move as for the PERL_MAD case? */ | |
11343788 | 6497 | o->op_private |= numargs; |
79072805 | 6498 | if (kid) |
53e06cf0 | 6499 | return too_many_arguments(o,OP_DESC(o)); |
eb8433b7 | 6500 | #endif |
11343788 | 6501 | listkids(o); |
79072805 | 6502 | } |
22c35a8c | 6503 | else if (PL_opargs[type] & OA_DEFGV) { |
c56915e3 | 6504 | #ifdef PERL_MAD |
c7fe699d | 6505 | OP *newop = newUNOP(type, 0, newDEFSVOP()); |
c56915e3 | 6506 | op_getmad(o,newop,'O'); |
c7fe699d | 6507 | return newop; |
c56915e3 | 6508 | #else |
c7fe699d | 6509 | /* Ordering of these two is important to keep f_map.t passing. */ |
11343788 | 6510 | op_free(o); |
c7fe699d | 6511 | return newUNOP(type, 0, newDEFSVOP()); |
c56915e3 | 6512 | #endif |
a0d0e21e LW |
6513 | } |
6514 | ||
79072805 LW |
6515 | if (oa) { |
6516 | while (oa & OA_OPTIONAL) | |
6517 | oa >>= 4; | |
6518 | if (oa && oa != OA_LIST) | |
53e06cf0 | 6519 | return too_few_arguments(o,OP_DESC(o)); |
79072805 | 6520 | } |
11343788 | 6521 | return o; |
79072805 LW |
6522 | } |
6523 | ||
6524 | OP * | |
cea2e8a9 | 6525 | Perl_ck_glob(pTHX_ OP *o) |
79072805 | 6526 | { |
27da23d5 | 6527 | dVAR; |
fb73857a | 6528 | GV *gv; |
6529 | ||
649da076 | 6530 | o = ck_fun(o); |
1f2bfc8a | 6531 | if ((o->op_flags & OPf_KIDS) && !cLISTOPo->op_first->op_sibling) |
54b9620d | 6532 | append_elem(OP_GLOB, o, newDEFSVOP()); |
fb73857a | 6533 | |
fafc274c | 6534 | if (!((gv = gv_fetchpvs("glob", GV_NOTQUAL, SVt_PVCV)) |
b9f751c0 GS |
6535 | && GvCVu(gv) && GvIMPORTED_CV(gv))) |
6536 | { | |
5c1737d1 | 6537 | gv = gv_fetchpvs("CORE::GLOBAL::glob", 0, SVt_PVCV); |
b9f751c0 | 6538 | } |
b1cb66bf | 6539 | |
52bb0670 | 6540 | #if !defined(PERL_EXTERNAL_GLOB) |
72b16652 | 6541 | /* XXX this can be tightened up and made more failsafe. */ |
f444d496 | 6542 | if (!(gv && GvCVu(gv) && GvIMPORTED_CV(gv))) { |
7d3fb230 | 6543 | GV *glob_gv; |
72b16652 | 6544 | ENTER; |
00ca71c1 | 6545 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, |
a0714e2c | 6546 | newSVpvs("File::Glob"), NULL, NULL, NULL); |
5c1737d1 NC |
6547 | gv = gv_fetchpvs("CORE::GLOBAL::glob", 0, SVt_PVCV); |
6548 | glob_gv = gv_fetchpvs("File::Glob::csh_glob", 0, SVt_PVCV); | |
7d3fb230 | 6549 | GvCV(gv) = GvCV(glob_gv); |
b37c2d43 | 6550 | SvREFCNT_inc_void((SV*)GvCV(gv)); |
7d3fb230 | 6551 | GvIMPORTED_CV_on(gv); |
72b16652 GS |
6552 | LEAVE; |
6553 | } | |
52bb0670 | 6554 | #endif /* PERL_EXTERNAL_GLOB */ |
72b16652 | 6555 | |
b9f751c0 | 6556 | if (gv && GvCVu(gv) && GvIMPORTED_CV(gv)) { |
5196be3e | 6557 | append_elem(OP_GLOB, o, |
80252599 | 6558 | newSVOP(OP_CONST, 0, newSViv(PL_glob_index++))); |
1f2bfc8a | 6559 | o->op_type = OP_LIST; |
22c35a8c | 6560 | o->op_ppaddr = PL_ppaddr[OP_LIST]; |
1f2bfc8a | 6561 | cLISTOPo->op_first->op_type = OP_PUSHMARK; |
22c35a8c | 6562 | cLISTOPo->op_first->op_ppaddr = PL_ppaddr[OP_PUSHMARK]; |
ad33f57d | 6563 | cLISTOPo->op_first->op_targ = 0; |
1f2bfc8a | 6564 | o = newUNOP(OP_ENTERSUB, OPf_STACKED, |
aeea060c | 6565 | append_elem(OP_LIST, o, |
1f2bfc8a MB |
6566 | scalar(newUNOP(OP_RV2CV, 0, |
6567 | newGVOP(OP_GV, 0, gv))))); | |
d58bf5aa MB |
6568 | o = newUNOP(OP_NULL, 0, ck_subr(o)); |
6569 | o->op_targ = OP_GLOB; /* hint at what it used to be */ | |
6570 | return o; | |
b1cb66bf | 6571 | } |
6572 | gv = newGVgen("main"); | |
a0d0e21e | 6573 | gv_IOadd(gv); |
11343788 MB |
6574 | append_elem(OP_GLOB, o, newGVOP(OP_GV, 0, gv)); |
6575 | scalarkids(o); | |
649da076 | 6576 | return o; |
79072805 LW |
6577 | } |
6578 | ||
6579 | OP * | |
cea2e8a9 | 6580 | Perl_ck_grep(pTHX_ OP *o) |
79072805 | 6581 | { |
27da23d5 | 6582 | dVAR; |
03ca120d | 6583 | LOGOP *gwop = NULL; |
79072805 | 6584 | OP *kid; |
6867be6d | 6585 | const OPCODE type = o->op_type == OP_GREPSTART ? OP_GREPWHILE : OP_MAPWHILE; |
9f7d9405 | 6586 | PADOFFSET offset; |
79072805 | 6587 | |
22c35a8c | 6588 | o->op_ppaddr = PL_ppaddr[OP_GREPSTART]; |
03ca120d | 6589 | /* don't allocate gwop here, as we may leak it if PL_error_count > 0 */ |
aeea060c | 6590 | |
11343788 | 6591 | if (o->op_flags & OPf_STACKED) { |
a0d0e21e | 6592 | OP* k; |
11343788 MB |
6593 | o = ck_sort(o); |
6594 | kid = cLISTOPo->op_first->op_sibling; | |
d09ad856 BS |
6595 | if (!cUNOPx(kid)->op_next) |
6596 | Perl_croak(aTHX_ "panic: ck_grep"); | |
e3c9a8b9 | 6597 | for (k = cUNOPx(kid)->op_first; k; k = k->op_next) { |
a0d0e21e LW |
6598 | kid = k; |
6599 | } | |
03ca120d | 6600 | NewOp(1101, gwop, 1, LOGOP); |
a0d0e21e | 6601 | kid->op_next = (OP*)gwop; |
11343788 | 6602 | o->op_flags &= ~OPf_STACKED; |
93a17b20 | 6603 | } |
11343788 | 6604 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e LW |
6605 | if (type == OP_MAPWHILE) |
6606 | list(kid); | |
6607 | else | |
6608 | scalar(kid); | |
11343788 | 6609 | o = ck_fun(o); |
3280af22 | 6610 | if (PL_error_count) |
11343788 | 6611 | return o; |
aeea060c | 6612 | kid = cLISTOPo->op_first->op_sibling; |
79072805 | 6613 | if (kid->op_type != OP_NULL) |
cea2e8a9 | 6614 | Perl_croak(aTHX_ "panic: ck_grep"); |
79072805 LW |
6615 | kid = kUNOP->op_first; |
6616 | ||
03ca120d MHM |
6617 | if (!gwop) |
6618 | NewOp(1101, gwop, 1, LOGOP); | |
a0d0e21e | 6619 | gwop->op_type = type; |
22c35a8c | 6620 | gwop->op_ppaddr = PL_ppaddr[type]; |
11343788 | 6621 | gwop->op_first = listkids(o); |
79072805 | 6622 | gwop->op_flags |= OPf_KIDS; |
79072805 | 6623 | gwop->op_other = LINKLIST(kid); |
79072805 | 6624 | kid->op_next = (OP*)gwop; |
59f00321 | 6625 | offset = pad_findmy("$_"); |
00b1698f | 6626 | if (offset == NOT_IN_PAD || PAD_COMPNAME_FLAGS_isOUR(offset)) { |
59f00321 RGS |
6627 | o->op_private = gwop->op_private = 0; |
6628 | gwop->op_targ = pad_alloc(type, SVs_PADTMP); | |
6629 | } | |
6630 | else { | |
6631 | o->op_private = gwop->op_private = OPpGREP_LEX; | |
6632 | gwop->op_targ = o->op_targ = offset; | |
6633 | } | |
79072805 | 6634 | |
11343788 | 6635 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e | 6636 | if (!kid || !kid->op_sibling) |
53e06cf0 | 6637 | return too_few_arguments(o,OP_DESC(o)); |
a0d0e21e LW |
6638 | for (kid = kid->op_sibling; kid; kid = kid->op_sibling) |
6639 | mod(kid, OP_GREPSTART); | |
6640 | ||
79072805 LW |
6641 | return (OP*)gwop; |
6642 | } | |
6643 | ||
6644 | OP * | |
cea2e8a9 | 6645 | Perl_ck_index(pTHX_ OP *o) |
79072805 | 6646 | { |
11343788 MB |
6647 | if (o->op_flags & OPf_KIDS) { |
6648 | OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
0b71040e LW |
6649 | if (kid) |
6650 | kid = kid->op_sibling; /* get past "big" */ | |
79072805 | 6651 | if (kid && kid->op_type == OP_CONST) |
2779dcf1 | 6652 | fbm_compile(((SVOP*)kid)->op_sv, 0); |
79072805 | 6653 | } |
11343788 | 6654 | return ck_fun(o); |
79072805 LW |
6655 | } |
6656 | ||
6657 | OP * | |
cea2e8a9 | 6658 | Perl_ck_lengthconst(pTHX_ OP *o) |
79072805 LW |
6659 | { |
6660 | /* XXX length optimization goes here */ | |
11343788 | 6661 | return ck_fun(o); |
79072805 LW |
6662 | } |
6663 | ||
6664 | OP * | |
cea2e8a9 | 6665 | Perl_ck_lfun(pTHX_ OP *o) |
79072805 | 6666 | { |
6867be6d | 6667 | const OPCODE type = o->op_type; |
5dc0d613 | 6668 | return modkids(ck_fun(o), type); |
79072805 LW |
6669 | } |
6670 | ||
6671 | OP * | |
cea2e8a9 | 6672 | Perl_ck_defined(pTHX_ OP *o) /* 19990527 MJD */ |
69794302 | 6673 | { |
12bcd1a6 | 6674 | if ((o->op_flags & OPf_KIDS) && ckWARN2(WARN_DEPRECATED, WARN_SYNTAX)) { |
d0334bed GS |
6675 | switch (cUNOPo->op_first->op_type) { |
6676 | case OP_RV2AV: | |
a8739d98 JH |
6677 | /* This is needed for |
6678 | if (defined %stash::) | |
6679 | to work. Do not break Tk. | |
6680 | */ | |
1c846c1f | 6681 | break; /* Globals via GV can be undef */ |
d0334bed GS |
6682 | case OP_PADAV: |
6683 | case OP_AASSIGN: /* Is this a good idea? */ | |
12bcd1a6 | 6684 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
f10b0346 | 6685 | "defined(@array) is deprecated"); |
12bcd1a6 | 6686 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
cc507455 | 6687 | "\t(Maybe you should just omit the defined()?)\n"); |
69794302 | 6688 | break; |
d0334bed | 6689 | case OP_RV2HV: |
a8739d98 JH |
6690 | /* This is needed for |
6691 | if (defined %stash::) | |
6692 | to work. Do not break Tk. | |
6693 | */ | |
1c846c1f | 6694 | break; /* Globals via GV can be undef */ |
d0334bed | 6695 | case OP_PADHV: |
12bcd1a6 | 6696 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
894356b3 | 6697 | "defined(%%hash) is deprecated"); |
12bcd1a6 | 6698 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
cc507455 | 6699 | "\t(Maybe you should just omit the defined()?)\n"); |
d0334bed GS |
6700 | break; |
6701 | default: | |
6702 | /* no warning */ | |
6703 | break; | |
6704 | } | |
69794302 MJD |
6705 | } |
6706 | return ck_rfun(o); | |
6707 | } | |
6708 | ||
6709 | OP * | |
cea2e8a9 | 6710 | Perl_ck_rfun(pTHX_ OP *o) |
8990e307 | 6711 | { |
6867be6d | 6712 | const OPCODE type = o->op_type; |
5dc0d613 | 6713 | return refkids(ck_fun(o), type); |
8990e307 LW |
6714 | } |
6715 | ||
6716 | OP * | |
cea2e8a9 | 6717 | Perl_ck_listiob(pTHX_ OP *o) |
79072805 LW |
6718 | { |
6719 | register OP *kid; | |
aeea060c | 6720 | |
11343788 | 6721 | kid = cLISTOPo->op_first; |
79072805 | 6722 | if (!kid) { |
11343788 MB |
6723 | o = force_list(o); |
6724 | kid = cLISTOPo->op_first; | |
79072805 LW |
6725 | } |
6726 | if (kid->op_type == OP_PUSHMARK) | |
6727 | kid = kid->op_sibling; | |
11343788 | 6728 | if (kid && o->op_flags & OPf_STACKED) |
79072805 LW |
6729 | kid = kid->op_sibling; |
6730 | else if (kid && !kid->op_sibling) { /* print HANDLE; */ | |
6731 | if (kid->op_type == OP_CONST && kid->op_private & OPpCONST_BARE) { | |
11343788 | 6732 | o->op_flags |= OPf_STACKED; /* make it a filehandle */ |
748a9306 | 6733 | kid = newUNOP(OP_RV2GV, OPf_REF, scalar(kid)); |
11343788 MB |
6734 | cLISTOPo->op_first->op_sibling = kid; |
6735 | cLISTOPo->op_last = kid; | |
79072805 LW |
6736 | kid = kid->op_sibling; |
6737 | } | |
6738 | } | |
b2ffa427 | 6739 | |
79072805 | 6740 | if (!kid) |
54b9620d | 6741 | append_elem(o->op_type, o, newDEFSVOP()); |
79072805 | 6742 | |
2de3dbcc | 6743 | return listkids(o); |
bbce6d69 | 6744 | } |
6745 | ||
6746 | OP * | |
0d863452 RH |
6747 | Perl_ck_say(pTHX_ OP *o) |
6748 | { | |
6749 | o = ck_listiob(o); | |
6750 | o->op_type = OP_PRINT; | |
6751 | cLISTOPo->op_last = cLISTOPo->op_last->op_sibling | |
396482e1 | 6752 | = newSVOP(OP_CONST, 0, newSVpvs("\n")); |
0d863452 RH |
6753 | return o; |
6754 | } | |
6755 | ||
6756 | OP * | |
6757 | Perl_ck_smartmatch(pTHX_ OP *o) | |
6758 | { | |
97aff369 | 6759 | dVAR; |
0d863452 RH |
6760 | if (0 == (o->op_flags & OPf_SPECIAL)) { |
6761 | OP *first = cBINOPo->op_first; | |
6762 | OP *second = first->op_sibling; | |
6763 | ||
6764 | /* Implicitly take a reference to an array or hash */ | |
5f66b61c | 6765 | first->op_sibling = NULL; |
0d863452 RH |
6766 | first = cBINOPo->op_first = ref_array_or_hash(first); |
6767 | second = first->op_sibling = ref_array_or_hash(second); | |
6768 | ||
6769 | /* Implicitly take a reference to a regular expression */ | |
6770 | if (first->op_type == OP_MATCH) { | |
6771 | first->op_type = OP_QR; | |
6772 | first->op_ppaddr = PL_ppaddr[OP_QR]; | |
6773 | } | |
6774 | if (second->op_type == OP_MATCH) { | |
6775 | second->op_type = OP_QR; | |
6776 | second->op_ppaddr = PL_ppaddr[OP_QR]; | |
6777 | } | |
6778 | } | |
6779 | ||
6780 | return o; | |
6781 | } | |
6782 | ||
6783 | ||
6784 | OP * | |
b162f9ea IZ |
6785 | Perl_ck_sassign(pTHX_ OP *o) |
6786 | { | |
1496a290 | 6787 | OP * const kid = cLISTOPo->op_first; |
b162f9ea IZ |
6788 | /* has a disposable target? */ |
6789 | if ((PL_opargs[kid->op_type] & OA_TARGLEX) | |
6b66af17 GS |
6790 | && !(kid->op_flags & OPf_STACKED) |
6791 | /* Cannot steal the second time! */ | |
6792 | && !(kid->op_private & OPpTARGET_MY)) | |
b162f9ea | 6793 | { |
551405c4 | 6794 | OP * const kkid = kid->op_sibling; |
b162f9ea IZ |
6795 | |
6796 | /* Can just relocate the target. */ | |
2c2d71f5 JH |
6797 | if (kkid && kkid->op_type == OP_PADSV |
6798 | && !(kkid->op_private & OPpLVAL_INTRO)) | |
6799 | { | |
b162f9ea | 6800 | kid->op_targ = kkid->op_targ; |
743e66e6 | 6801 | kkid->op_targ = 0; |
b162f9ea IZ |
6802 | /* Now we do not need PADSV and SASSIGN. */ |
6803 | kid->op_sibling = o->op_sibling; /* NULL */ | |
6804 | cLISTOPo->op_first = NULL; | |
eb8433b7 NC |
6805 | #ifdef PERL_MAD |
6806 | op_getmad(o,kid,'O'); | |
6807 | op_getmad(kkid,kid,'M'); | |
6808 | #else | |
b162f9ea IZ |
6809 | op_free(o); |
6810 | op_free(kkid); | |
eb8433b7 | 6811 | #endif |
b162f9ea IZ |
6812 | kid->op_private |= OPpTARGET_MY; /* Used for context settings */ |
6813 | return kid; | |
6814 | } | |
6815 | } | |
952306ac RGS |
6816 | if (kid->op_sibling) { |
6817 | OP *kkid = kid->op_sibling; | |
6818 | if (kkid->op_type == OP_PADSV | |
6819 | && (kkid->op_private & OPpLVAL_INTRO) | |
6820 | && SvPAD_STATE(*av_fetch(PL_comppad_name, kkid->op_targ, FALSE))) { | |
6821 | o->op_private |= OPpASSIGN_STATE; | |
6822 | /* hijacking PADSTALE for uninitialized state variables */ | |
6823 | SvPADSTALE_on(PAD_SVl(kkid->op_targ)); | |
6824 | } | |
6825 | } | |
b162f9ea IZ |
6826 | return o; |
6827 | } | |
6828 | ||
6829 | OP * | |
cea2e8a9 | 6830 | Perl_ck_match(pTHX_ OP *o) |
79072805 | 6831 | { |
97aff369 | 6832 | dVAR; |
0d863452 | 6833 | if (o->op_type != OP_QR && PL_compcv) { |
9f7d9405 | 6834 | const PADOFFSET offset = pad_findmy("$_"); |
00b1698f | 6835 | if (offset != NOT_IN_PAD && !(PAD_COMPNAME_FLAGS_isOUR(offset))) { |
59f00321 RGS |
6836 | o->op_targ = offset; |
6837 | o->op_private |= OPpTARGET_MY; | |
6838 | } | |
6839 | } | |
6840 | if (o->op_type == OP_MATCH || o->op_type == OP_QR) | |
6841 | o->op_private |= OPpRUNTIME; | |
11343788 | 6842 | return o; |
79072805 LW |
6843 | } |
6844 | ||
6845 | OP * | |
f5d5a27c CS |
6846 | Perl_ck_method(pTHX_ OP *o) |
6847 | { | |
551405c4 | 6848 | OP * const kid = cUNOPo->op_first; |
f5d5a27c CS |
6849 | if (kid->op_type == OP_CONST) { |
6850 | SV* sv = kSVOP->op_sv; | |
a4fc7abc AL |
6851 | const char * const method = SvPVX_const(sv); |
6852 | if (!(strchr(method, ':') || strchr(method, '\''))) { | |
f5d5a27c | 6853 | OP *cmop; |
1c846c1f | 6854 | if (!SvREADONLY(sv) || !SvFAKE(sv)) { |
a4fc7abc | 6855 | sv = newSVpvn_share(method, SvCUR(sv), 0); |
1c846c1f NIS |
6856 | } |
6857 | else { | |
a0714e2c | 6858 | kSVOP->op_sv = NULL; |
1c846c1f | 6859 | } |
f5d5a27c | 6860 | cmop = newSVOP(OP_METHOD_NAMED, 0, sv); |
eb8433b7 NC |
6861 | #ifdef PERL_MAD |
6862 | op_getmad(o,cmop,'O'); | |
6863 | #else | |
f5d5a27c | 6864 | op_free(o); |
eb8433b7 | 6865 | #endif |
f5d5a27c CS |
6866 | return cmop; |
6867 | } | |
6868 | } | |
6869 | return o; | |
6870 | } | |
6871 | ||
6872 | OP * | |
cea2e8a9 | 6873 | Perl_ck_null(pTHX_ OP *o) |
79072805 | 6874 | { |
96a5add6 | 6875 | PERL_UNUSED_CONTEXT; |
11343788 | 6876 | return o; |
79072805 LW |
6877 | } |
6878 | ||
6879 | OP * | |
16fe6d59 GS |
6880 | Perl_ck_open(pTHX_ OP *o) |
6881 | { | |
97aff369 | 6882 | dVAR; |
551405c4 | 6883 | HV * const table = GvHV(PL_hintgv); |
16fe6d59 | 6884 | if (table) { |
a4fc7abc | 6885 | SV **svp = hv_fetchs(table, "open_IN", FALSE); |
16fe6d59 | 6886 | if (svp && *svp) { |
551405c4 | 6887 | const I32 mode = mode_from_discipline(*svp); |
16fe6d59 GS |
6888 | if (mode & O_BINARY) |
6889 | o->op_private |= OPpOPEN_IN_RAW; | |
6890 | else if (mode & O_TEXT) | |
6891 | o->op_private |= OPpOPEN_IN_CRLF; | |
6892 | } | |
6893 | ||
a4fc7abc | 6894 | svp = hv_fetchs(table, "open_OUT", FALSE); |
16fe6d59 | 6895 | if (svp && *svp) { |
551405c4 | 6896 | const I32 mode = mode_from_discipline(*svp); |
16fe6d59 GS |
6897 | if (mode & O_BINARY) |
6898 | o->op_private |= OPpOPEN_OUT_RAW; | |
6899 | else if (mode & O_TEXT) | |
6900 | o->op_private |= OPpOPEN_OUT_CRLF; | |
6901 | } | |
6902 | } | |
6903 | if (o->op_type == OP_BACKTICK) | |
6904 | return o; | |
3b82e551 JH |
6905 | { |
6906 | /* In case of three-arg dup open remove strictness | |
6907 | * from the last arg if it is a bareword. */ | |
551405c4 AL |
6908 | OP * const first = cLISTOPx(o)->op_first; /* The pushmark. */ |
6909 | OP * const last = cLISTOPx(o)->op_last; /* The bareword. */ | |
3b82e551 | 6910 | OP *oa; |
b15aece3 | 6911 | const char *mode; |
3b82e551 JH |
6912 | |
6913 | if ((last->op_type == OP_CONST) && /* The bareword. */ | |
6914 | (last->op_private & OPpCONST_BARE) && | |
6915 | (last->op_private & OPpCONST_STRICT) && | |
6916 | (oa = first->op_sibling) && /* The fh. */ | |
6917 | (oa = oa->op_sibling) && /* The mode. */ | |
ea1d064a | 6918 | (oa->op_type == OP_CONST) && |
3b82e551 | 6919 | SvPOK(((SVOP*)oa)->op_sv) && |
b15aece3 | 6920 | (mode = SvPVX_const(((SVOP*)oa)->op_sv)) && |
3b82e551 JH |
6921 | mode[0] == '>' && mode[1] == '&' && /* A dup open. */ |
6922 | (last == oa->op_sibling)) /* The bareword. */ | |
6923 | last->op_private &= ~OPpCONST_STRICT; | |
6924 | } | |
16fe6d59 GS |
6925 | return ck_fun(o); |
6926 | } | |
6927 | ||
6928 | OP * | |
cea2e8a9 | 6929 | Perl_ck_repeat(pTHX_ OP *o) |
79072805 | 6930 | { |
11343788 MB |
6931 | if (cBINOPo->op_first->op_flags & OPf_PARENS) { |
6932 | o->op_private |= OPpREPEAT_DOLIST; | |
6933 | cBINOPo->op_first = force_list(cBINOPo->op_first); | |
79072805 LW |
6934 | } |
6935 | else | |
11343788 MB |
6936 | scalar(o); |
6937 | return o; | |
79072805 LW |
6938 | } |
6939 | ||
6940 | OP * | |
cea2e8a9 | 6941 | Perl_ck_require(pTHX_ OP *o) |
8990e307 | 6942 | { |
97aff369 | 6943 | dVAR; |
a0714e2c | 6944 | GV* gv = NULL; |
ec4ab249 | 6945 | |
11343788 | 6946 | if (o->op_flags & OPf_KIDS) { /* Shall we supply missing .pm? */ |
551405c4 | 6947 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
8990e307 LW |
6948 | |
6949 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
551405c4 | 6950 | SV * const sv = kid->op_sv; |
5c144d81 | 6951 | U32 was_readonly = SvREADONLY(sv); |
8990e307 | 6952 | char *s; |
5c144d81 NC |
6953 | |
6954 | if (was_readonly) { | |
6955 | if (SvFAKE(sv)) { | |
6956 | sv_force_normal_flags(sv, 0); | |
6957 | assert(!SvREADONLY(sv)); | |
6958 | was_readonly = 0; | |
6959 | } else { | |
6960 | SvREADONLY_off(sv); | |
6961 | } | |
6962 | } | |
6963 | ||
6964 | for (s = SvPVX(sv); *s; s++) { | |
a0d0e21e | 6965 | if (*s == ':' && s[1] == ':') { |
42d9b98d | 6966 | const STRLEN len = strlen(s+2)+1; |
a0d0e21e | 6967 | *s = '/'; |
42d9b98d | 6968 | Move(s+2, s+1, len, char); |
5c144d81 | 6969 | SvCUR_set(sv, SvCUR(sv) - 1); |
a0d0e21e | 6970 | } |
8990e307 | 6971 | } |
396482e1 | 6972 | sv_catpvs(sv, ".pm"); |
5c144d81 | 6973 | SvFLAGS(sv) |= was_readonly; |
8990e307 LW |
6974 | } |
6975 | } | |
ec4ab249 | 6976 | |
a72a1c8b RGS |
6977 | if (!(o->op_flags & OPf_SPECIAL)) { /* Wasn't written as CORE::require */ |
6978 | /* handle override, if any */ | |
fafc274c | 6979 | gv = gv_fetchpvs("require", GV_NOTQUAL, SVt_PVCV); |
d6a985f2 | 6980 | if (!(gv && GvCVu(gv) && GvIMPORTED_CV(gv))) { |
a4fc7abc | 6981 | GV * const * const gvp = (GV**)hv_fetchs(PL_globalstash, "require", FALSE); |
a0714e2c | 6982 | gv = gvp ? *gvp : NULL; |
d6a985f2 | 6983 | } |
a72a1c8b | 6984 | } |
ec4ab249 | 6985 | |
b9f751c0 | 6986 | if (gv && GvCVu(gv) && GvIMPORTED_CV(gv)) { |
551405c4 | 6987 | OP * const kid = cUNOPo->op_first; |
f11453cb NC |
6988 | OP * newop; |
6989 | ||
ec4ab249 | 6990 | cUNOPo->op_first = 0; |
f11453cb | 6991 | #ifndef PERL_MAD |
ec4ab249 | 6992 | op_free(o); |
eb8433b7 | 6993 | #endif |
f11453cb NC |
6994 | newop = ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, |
6995 | append_elem(OP_LIST, kid, | |
6996 | scalar(newUNOP(OP_RV2CV, 0, | |
6997 | newGVOP(OP_GV, 0, | |
6998 | gv)))))); | |
6999 | op_getmad(o,newop,'O'); | |
eb8433b7 | 7000 | return newop; |
ec4ab249 GA |
7001 | } |
7002 | ||
11343788 | 7003 | return ck_fun(o); |
8990e307 LW |
7004 | } |
7005 | ||
78f9721b SM |
7006 | OP * |
7007 | Perl_ck_return(pTHX_ OP *o) | |
7008 | { | |
97aff369 | 7009 | dVAR; |
78f9721b | 7010 | if (CvLVALUE(PL_compcv)) { |
6867be6d | 7011 | OP *kid; |
78f9721b SM |
7012 | for (kid = cLISTOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
7013 | mod(kid, OP_LEAVESUBLV); | |
7014 | } | |
7015 | return o; | |
7016 | } | |
7017 | ||
79072805 | 7018 | OP * |
cea2e8a9 | 7019 | Perl_ck_select(pTHX_ OP *o) |
79072805 | 7020 | { |
27da23d5 | 7021 | dVAR; |
c07a80fd | 7022 | OP* kid; |
11343788 MB |
7023 | if (o->op_flags & OPf_KIDS) { |
7024 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
2304df62 | 7025 | if (kid && kid->op_sibling) { |
11343788 | 7026 | o->op_type = OP_SSELECT; |
22c35a8c | 7027 | o->op_ppaddr = PL_ppaddr[OP_SSELECT]; |
11343788 MB |
7028 | o = ck_fun(o); |
7029 | return fold_constants(o); | |
79072805 LW |
7030 | } |
7031 | } | |
11343788 MB |
7032 | o = ck_fun(o); |
7033 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
c07a80fd | 7034 | if (kid && kid->op_type == OP_RV2GV) |
7035 | kid->op_private &= ~HINT_STRICT_REFS; | |
11343788 | 7036 | return o; |
79072805 LW |
7037 | } |
7038 | ||
7039 | OP * | |
cea2e8a9 | 7040 | Perl_ck_shift(pTHX_ OP *o) |
79072805 | 7041 | { |
97aff369 | 7042 | dVAR; |
6867be6d | 7043 | const I32 type = o->op_type; |
79072805 | 7044 | |
11343788 | 7045 | if (!(o->op_flags & OPf_KIDS)) { |
6d4ff0d2 | 7046 | OP *argop; |
eb8433b7 NC |
7047 | /* FIXME - this can be refactored to reduce code in #ifdefs */ |
7048 | #ifdef PERL_MAD | |
1d866c12 | 7049 | OP * const oldo = o; |
eb8433b7 | 7050 | #else |
11343788 | 7051 | op_free(o); |
eb8433b7 | 7052 | #endif |
6d4ff0d2 | 7053 | argop = newUNOP(OP_RV2AV, 0, |
8fde6460 | 7054 | scalar(newGVOP(OP_GV, 0, CvUNIQUE(PL_compcv) ? PL_argvgv : PL_defgv))); |
eb8433b7 NC |
7055 | #ifdef PERL_MAD |
7056 | o = newUNOP(type, 0, scalar(argop)); | |
7057 | op_getmad(oldo,o,'O'); | |
7058 | return o; | |
7059 | #else | |
6d4ff0d2 | 7060 | return newUNOP(type, 0, scalar(argop)); |
eb8433b7 | 7061 | #endif |
79072805 | 7062 | } |
11343788 | 7063 | return scalar(modkids(ck_fun(o), type)); |
79072805 LW |
7064 | } |
7065 | ||
7066 | OP * | |
cea2e8a9 | 7067 | Perl_ck_sort(pTHX_ OP *o) |
79072805 | 7068 | { |
97aff369 | 7069 | dVAR; |
8e3f9bdf | 7070 | OP *firstkid; |
bbce6d69 | 7071 | |
1496a290 | 7072 | if (o->op_type == OP_SORT && (PL_hints & HINT_LOCALIZE_HH) != 0) { |
a4fc7abc | 7073 | HV * const hinthv = GvHV(PL_hintgv); |
7b9ef140 | 7074 | if (hinthv) { |
a4fc7abc | 7075 | SV ** const svp = hv_fetchs(hinthv, "sort", FALSE); |
7b9ef140 | 7076 | if (svp) { |
a4fc7abc | 7077 | const I32 sorthints = (I32)SvIV(*svp); |
7b9ef140 RH |
7078 | if ((sorthints & HINT_SORT_QUICKSORT) != 0) |
7079 | o->op_private |= OPpSORT_QSORT; | |
7080 | if ((sorthints & HINT_SORT_STABLE) != 0) | |
7081 | o->op_private |= OPpSORT_STABLE; | |
7082 | } | |
7083 | } | |
7084 | } | |
7085 | ||
9ea6e965 | 7086 | if (o->op_type == OP_SORT && o->op_flags & OPf_STACKED) |
51a19bc0 | 7087 | simplify_sort(o); |
8e3f9bdf GS |
7088 | firstkid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
7089 | if (o->op_flags & OPf_STACKED) { /* may have been cleared */ | |
9c5ffd7c | 7090 | OP *k = NULL; |
8e3f9bdf | 7091 | OP *kid = cUNOPx(firstkid)->op_first; /* get past null */ |
79072805 | 7092 | |
463ee0b2 | 7093 | if (kid->op_type == OP_SCOPE || kid->op_type == OP_LEAVE) { |
79072805 | 7094 | linklist(kid); |
463ee0b2 LW |
7095 | if (kid->op_type == OP_SCOPE) { |
7096 | k = kid->op_next; | |
7097 | kid->op_next = 0; | |
79072805 | 7098 | } |
463ee0b2 | 7099 | else if (kid->op_type == OP_LEAVE) { |
11343788 | 7100 | if (o->op_type == OP_SORT) { |
93c66552 | 7101 | op_null(kid); /* wipe out leave */ |
748a9306 | 7102 | kid->op_next = kid; |
463ee0b2 | 7103 | |
748a9306 LW |
7104 | for (k = kLISTOP->op_first->op_next; k; k = k->op_next) { |
7105 | if (k->op_next == kid) | |
7106 | k->op_next = 0; | |
71a29c3c GS |
7107 | /* don't descend into loops */ |
7108 | else if (k->op_type == OP_ENTERLOOP | |
7109 | || k->op_type == OP_ENTERITER) | |
7110 | { | |
7111 | k = cLOOPx(k)->op_lastop; | |
7112 | } | |
748a9306 | 7113 | } |
463ee0b2 | 7114 | } |
748a9306 LW |
7115 | else |
7116 | kid->op_next = 0; /* just disconnect the leave */ | |
a0d0e21e | 7117 | k = kLISTOP->op_first; |
463ee0b2 | 7118 | } |
a2efc822 | 7119 | CALL_PEEP(k); |
a0d0e21e | 7120 | |
8e3f9bdf GS |
7121 | kid = firstkid; |
7122 | if (o->op_type == OP_SORT) { | |
7123 | /* provide scalar context for comparison function/block */ | |
7124 | kid = scalar(kid); | |
a0d0e21e | 7125 | kid->op_next = kid; |
8e3f9bdf | 7126 | } |
a0d0e21e LW |
7127 | else |
7128 | kid->op_next = k; | |
11343788 | 7129 | o->op_flags |= OPf_SPECIAL; |
79072805 | 7130 | } |
c6e96bcb | 7131 | else if (kid->op_type == OP_RV2SV || kid->op_type == OP_PADSV) |
93c66552 | 7132 | op_null(firstkid); |
8e3f9bdf GS |
7133 | |
7134 | firstkid = firstkid->op_sibling; | |
79072805 | 7135 | } |
bbce6d69 | 7136 | |
8e3f9bdf GS |
7137 | /* provide list context for arguments */ |
7138 | if (o->op_type == OP_SORT) | |
7139 | list(firstkid); | |
7140 | ||
11343788 | 7141 | return o; |
79072805 | 7142 | } |
bda4119b GS |
7143 | |
7144 | STATIC void | |
cea2e8a9 | 7145 | S_simplify_sort(pTHX_ OP *o) |
9c007264 | 7146 | { |
97aff369 | 7147 | dVAR; |
9c007264 JH |
7148 | register OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
7149 | OP *k; | |
eb209983 | 7150 | int descending; |
350de78d | 7151 | GV *gv; |
770526c1 | 7152 | const char *gvname; |
9c007264 JH |
7153 | if (!(o->op_flags & OPf_STACKED)) |
7154 | return; | |
fafc274c NC |
7155 | GvMULTI_on(gv_fetchpvs("a", GV_ADD|GV_NOTQUAL, SVt_PV)); |
7156 | GvMULTI_on(gv_fetchpvs("b", GV_ADD|GV_NOTQUAL, SVt_PV)); | |
82092f1d | 7157 | kid = kUNOP->op_first; /* get past null */ |
9c007264 JH |
7158 | if (kid->op_type != OP_SCOPE) |
7159 | return; | |
7160 | kid = kLISTOP->op_last; /* get past scope */ | |
7161 | switch(kid->op_type) { | |
7162 | case OP_NCMP: | |
7163 | case OP_I_NCMP: | |
7164 | case OP_SCMP: | |
7165 | break; | |
7166 | default: | |
7167 | return; | |
7168 | } | |
7169 | k = kid; /* remember this node*/ | |
7170 | if (kBINOP->op_first->op_type != OP_RV2SV) | |
7171 | return; | |
7172 | kid = kBINOP->op_first; /* get past cmp */ | |
7173 | if (kUNOP->op_first->op_type != OP_GV) | |
7174 | return; | |
7175 | kid = kUNOP->op_first; /* get past rv2sv */ | |
638eceb6 | 7176 | gv = kGVOP_gv; |
350de78d | 7177 | if (GvSTASH(gv) != PL_curstash) |
9c007264 | 7178 | return; |
770526c1 NC |
7179 | gvname = GvNAME(gv); |
7180 | if (*gvname == 'a' && gvname[1] == '\0') | |
eb209983 | 7181 | descending = 0; |
770526c1 | 7182 | else if (*gvname == 'b' && gvname[1] == '\0') |
eb209983 | 7183 | descending = 1; |
9c007264 JH |
7184 | else |
7185 | return; | |
eb209983 | 7186 | |
9c007264 JH |
7187 | kid = k; /* back to cmp */ |
7188 | if (kBINOP->op_last->op_type != OP_RV2SV) | |
7189 | return; | |
7190 | kid = kBINOP->op_last; /* down to 2nd arg */ | |
7191 | if (kUNOP->op_first->op_type != OP_GV) | |
7192 | return; | |
7193 | kid = kUNOP->op_first; /* get past rv2sv */ | |
638eceb6 | 7194 | gv = kGVOP_gv; |
770526c1 NC |
7195 | if (GvSTASH(gv) != PL_curstash) |
7196 | return; | |
7197 | gvname = GvNAME(gv); | |
7198 | if ( descending | |
7199 | ? !(*gvname == 'a' && gvname[1] == '\0') | |
7200 | : !(*gvname == 'b' && gvname[1] == '\0')) | |
9c007264 JH |
7201 | return; |
7202 | o->op_flags &= ~(OPf_STACKED | OPf_SPECIAL); | |
eb209983 NC |
7203 | if (descending) |
7204 | o->op_private |= OPpSORT_DESCEND; | |
9c007264 JH |
7205 | if (k->op_type == OP_NCMP) |
7206 | o->op_private |= OPpSORT_NUMERIC; | |
7207 | if (k->op_type == OP_I_NCMP) | |
7208 | o->op_private |= OPpSORT_NUMERIC | OPpSORT_INTEGER; | |
e507f050 SM |
7209 | kid = cLISTOPo->op_first->op_sibling; |
7210 | cLISTOPo->op_first->op_sibling = kid->op_sibling; /* bypass old block */ | |
eb8433b7 NC |
7211 | #ifdef PERL_MAD |
7212 | op_getmad(kid,o,'S'); /* then delete it */ | |
7213 | #else | |
e507f050 | 7214 | op_free(kid); /* then delete it */ |
eb8433b7 | 7215 | #endif |
9c007264 | 7216 | } |
79072805 LW |
7217 | |
7218 | OP * | |
cea2e8a9 | 7219 | Perl_ck_split(pTHX_ OP *o) |
79072805 | 7220 | { |
27da23d5 | 7221 | dVAR; |
79072805 | 7222 | register OP *kid; |
aeea060c | 7223 | |
11343788 MB |
7224 | if (o->op_flags & OPf_STACKED) |
7225 | return no_fh_allowed(o); | |
79072805 | 7226 | |
11343788 | 7227 | kid = cLISTOPo->op_first; |
8990e307 | 7228 | if (kid->op_type != OP_NULL) |
cea2e8a9 | 7229 | Perl_croak(aTHX_ "panic: ck_split"); |
8990e307 | 7230 | kid = kid->op_sibling; |
11343788 MB |
7231 | op_free(cLISTOPo->op_first); |
7232 | cLISTOPo->op_first = kid; | |
85e6fe83 | 7233 | if (!kid) { |
396482e1 | 7234 | cLISTOPo->op_first = kid = newSVOP(OP_CONST, 0, newSVpvs(" ")); |
11343788 | 7235 | cLISTOPo->op_last = kid; /* There was only one element previously */ |
85e6fe83 | 7236 | } |
79072805 | 7237 | |
de4bf5b3 | 7238 | if (kid->op_type != OP_MATCH || kid->op_flags & OPf_STACKED) { |
551405c4 | 7239 | OP * const sibl = kid->op_sibling; |
463ee0b2 | 7240 | kid->op_sibling = 0; |
131b3ad0 | 7241 | kid = pmruntime( newPMOP(OP_MATCH, OPf_SPECIAL), kid, 0); |
11343788 MB |
7242 | if (cLISTOPo->op_first == cLISTOPo->op_last) |
7243 | cLISTOPo->op_last = kid; | |
7244 | cLISTOPo->op_first = kid; | |
79072805 LW |
7245 | kid->op_sibling = sibl; |
7246 | } | |
7247 | ||
7248 | kid->op_type = OP_PUSHRE; | |
22c35a8c | 7249 | kid->op_ppaddr = PL_ppaddr[OP_PUSHRE]; |
79072805 | 7250 | scalar(kid); |
041457d9 | 7251 | if (((PMOP *)kid)->op_pmflags & PMf_GLOBAL && ckWARN(WARN_REGEXP)) { |
f34840d8 MJD |
7252 | Perl_warner(aTHX_ packWARN(WARN_REGEXP), |
7253 | "Use of /g modifier is meaningless in split"); | |
7254 | } | |
79072805 LW |
7255 | |
7256 | if (!kid->op_sibling) | |
54b9620d | 7257 | append_elem(OP_SPLIT, o, newDEFSVOP()); |
79072805 LW |
7258 | |
7259 | kid = kid->op_sibling; | |
7260 | scalar(kid); | |
7261 | ||
7262 | if (!kid->op_sibling) | |
11343788 | 7263 | append_elem(OP_SPLIT, o, newSVOP(OP_CONST, 0, newSViv(0))); |
ce3e5c45 | 7264 | assert(kid->op_sibling); |
79072805 LW |
7265 | |
7266 | kid = kid->op_sibling; | |
7267 | scalar(kid); | |
7268 | ||
7269 | if (kid->op_sibling) | |
53e06cf0 | 7270 | return too_many_arguments(o,OP_DESC(o)); |
79072805 | 7271 | |
11343788 | 7272 | return o; |
79072805 LW |
7273 | } |
7274 | ||
7275 | OP * | |
1c846c1f | 7276 | Perl_ck_join(pTHX_ OP *o) |
eb6e2d6f | 7277 | { |
551405c4 | 7278 | const OP * const kid = cLISTOPo->op_first->op_sibling; |
041457d9 DM |
7279 | if (kid && kid->op_type == OP_MATCH) { |
7280 | if (ckWARN(WARN_SYNTAX)) { | |
6867be6d AL |
7281 | const REGEXP *re = PM_GETRE(kPMOP); |
7282 | const char *pmstr = re ? re->precomp : "STRING"; | |
9014280d | 7283 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
eb6e2d6f GS |
7284 | "/%s/ should probably be written as \"%s\"", |
7285 | pmstr, pmstr); | |
7286 | } | |
7287 | } | |
7288 | return ck_fun(o); | |
7289 | } | |
7290 | ||
7291 | OP * | |
cea2e8a9 | 7292 | Perl_ck_subr(pTHX_ OP *o) |
79072805 | 7293 | { |
97aff369 | 7294 | dVAR; |
11343788 MB |
7295 | OP *prev = ((cUNOPo->op_first->op_sibling) |
7296 | ? cUNOPo : ((UNOP*)cUNOPo->op_first))->op_first; | |
7297 | OP *o2 = prev->op_sibling; | |
4633a7c4 | 7298 | OP *cvop; |
a0751766 | 7299 | const char *proto = NULL; |
cbf82dd0 | 7300 | const char *proto_end = NULL; |
c445ea15 AL |
7301 | CV *cv = NULL; |
7302 | GV *namegv = NULL; | |
4633a7c4 LW |
7303 | int optional = 0; |
7304 | I32 arg = 0; | |
5b794e05 | 7305 | I32 contextclass = 0; |
c445ea15 | 7306 | char *e = NULL; |
0723351e | 7307 | bool delete_op = 0; |
4633a7c4 | 7308 | |
d3011074 | 7309 | o->op_private |= OPpENTERSUB_HASTARG; |
11343788 | 7310 | for (cvop = o2; cvop->op_sibling; cvop = cvop->op_sibling) ; |
4633a7c4 LW |
7311 | if (cvop->op_type == OP_RV2CV) { |
7312 | SVOP* tmpop; | |
11343788 | 7313 | o->op_private |= (cvop->op_private & OPpENTERSUB_AMPER); |
93c66552 | 7314 | op_null(cvop); /* disable rv2cv */ |
4633a7c4 | 7315 | tmpop = (SVOP*)((UNOP*)cvop)->op_first; |
76cd736e | 7316 | if (tmpop->op_type == OP_GV && !(o->op_private & OPpENTERSUB_AMPER)) { |
638eceb6 | 7317 | GV *gv = cGVOPx_gv(tmpop); |
350de78d | 7318 | cv = GvCVu(gv); |
76cd736e GS |
7319 | if (!cv) |
7320 | tmpop->op_private |= OPpEARLY_CV; | |
06492da6 SF |
7321 | else { |
7322 | if (SvPOK(cv)) { | |
cbf82dd0 | 7323 | STRLEN len; |
06492da6 | 7324 | namegv = CvANON(cv) ? gv : CvGV(cv); |
cbf82dd0 NC |
7325 | proto = SvPV((SV*)cv, len); |
7326 | proto_end = proto + len; | |
06492da6 SF |
7327 | } |
7328 | if (CvASSERTION(cv)) { | |
7329 | if (PL_hints & HINT_ASSERTING) { | |
7330 | if (PERLDB_ASSERTION && PL_curstash != PL_debstash) | |
7331 | o->op_private |= OPpENTERSUB_DB; | |
7332 | } | |
8fa7688f | 7333 | else { |
0723351e | 7334 | delete_op = 1; |
041457d9 | 7335 | if (!(PL_hints & HINT_ASSERTIONSSEEN) && ckWARN(WARN_ASSERTIONS)) { |
8fa7688f SF |
7336 | Perl_warner(aTHX_ packWARN(WARN_ASSERTIONS), |
7337 | "Impossible to activate assertion call"); | |
7338 | } | |
7339 | } | |
06492da6 | 7340 | } |
46fc3d4c | 7341 | } |
4633a7c4 LW |
7342 | } |
7343 | } | |
f5d5a27c | 7344 | else if (cvop->op_type == OP_METHOD || cvop->op_type == OP_METHOD_NAMED) { |
7a52d87a GS |
7345 | if (o2->op_type == OP_CONST) |
7346 | o2->op_private &= ~OPpCONST_STRICT; | |
58a40671 | 7347 | else if (o2->op_type == OP_LIST) { |
5f66b61c AL |
7348 | OP * const sib = ((UNOP*)o2)->op_first->op_sibling; |
7349 | if (sib && sib->op_type == OP_CONST) | |
7350 | sib->op_private &= ~OPpCONST_STRICT; | |
58a40671 | 7351 | } |
7a52d87a | 7352 | } |
3280af22 NIS |
7353 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
7354 | if (PERLDB_SUB && PL_curstash != PL_debstash) | |
11343788 MB |
7355 | o->op_private |= OPpENTERSUB_DB; |
7356 | while (o2 != cvop) { | |
eb8433b7 NC |
7357 | OP* o3; |
7358 | if (PL_madskills && o2->op_type == OP_NULL) | |
7359 | o3 = ((UNOP*)o2)->op_first; | |
7360 | else | |
7361 | o3 = o2; | |
4633a7c4 | 7362 | if (proto) { |
cbf82dd0 | 7363 | if (proto >= proto_end) |
5dc0d613 | 7364 | return too_many_arguments(o, gv_ename(namegv)); |
cbf82dd0 NC |
7365 | |
7366 | switch (*proto) { | |
4633a7c4 LW |
7367 | case ';': |
7368 | optional = 1; | |
7369 | proto++; | |
7370 | continue; | |
7371 | case '$': | |
7372 | proto++; | |
7373 | arg++; | |
11343788 | 7374 | scalar(o2); |
4633a7c4 LW |
7375 | break; |
7376 | case '%': | |
7377 | case '@': | |
11343788 | 7378 | list(o2); |
4633a7c4 LW |
7379 | arg++; |
7380 | break; | |
7381 | case '&': | |
7382 | proto++; | |
7383 | arg++; | |
eb8433b7 | 7384 | if (o3->op_type != OP_REFGEN && o3->op_type != OP_UNDEF) |
75fc29ea GS |
7385 | bad_type(arg, |
7386 | arg == 1 ? "block or sub {}" : "sub {}", | |
eb8433b7 | 7387 | gv_ename(namegv), o3); |
4633a7c4 LW |
7388 | break; |
7389 | case '*': | |
2ba6ecf4 | 7390 | /* '*' allows any scalar type, including bareword */ |
4633a7c4 LW |
7391 | proto++; |
7392 | arg++; | |
eb8433b7 | 7393 | if (o3->op_type == OP_RV2GV) |
2ba6ecf4 | 7394 | goto wrapref; /* autoconvert GLOB -> GLOBref */ |
eb8433b7 NC |
7395 | else if (o3->op_type == OP_CONST) |
7396 | o3->op_private &= ~OPpCONST_STRICT; | |
7397 | else if (o3->op_type == OP_ENTERSUB) { | |
9675f7ac | 7398 | /* accidental subroutine, revert to bareword */ |
eb8433b7 | 7399 | OP *gvop = ((UNOP*)o3)->op_first; |
9675f7ac GS |
7400 | if (gvop && gvop->op_type == OP_NULL) { |
7401 | gvop = ((UNOP*)gvop)->op_first; | |
7402 | if (gvop) { | |
7403 | for (; gvop->op_sibling; gvop = gvop->op_sibling) | |
7404 | ; | |
7405 | if (gvop && | |
7406 | (gvop->op_private & OPpENTERSUB_NOPAREN) && | |
7407 | (gvop = ((UNOP*)gvop)->op_first) && | |
7408 | gvop->op_type == OP_GV) | |
7409 | { | |
551405c4 AL |
7410 | GV * const gv = cGVOPx_gv(gvop); |
7411 | OP * const sibling = o2->op_sibling; | |
396482e1 | 7412 | SV * const n = newSVpvs(""); |
eb8433b7 | 7413 | #ifdef PERL_MAD |
1d866c12 | 7414 | OP * const oldo2 = o2; |
eb8433b7 | 7415 | #else |
9675f7ac | 7416 | op_free(o2); |
eb8433b7 | 7417 | #endif |
2a797ae2 | 7418 | gv_fullname4(n, gv, "", FALSE); |
2692f720 | 7419 | o2 = newSVOP(OP_CONST, 0, n); |
eb8433b7 | 7420 | op_getmad(oldo2,o2,'O'); |
9675f7ac GS |
7421 | prev->op_sibling = o2; |
7422 | o2->op_sibling = sibling; | |
7423 | } | |
7424 | } | |
7425 | } | |
7426 | } | |
2ba6ecf4 GS |
7427 | scalar(o2); |
7428 | break; | |
5b794e05 JH |
7429 | case '[': case ']': |
7430 | goto oops; | |
7431 | break; | |
4633a7c4 LW |
7432 | case '\\': |
7433 | proto++; | |
7434 | arg++; | |
5b794e05 | 7435 | again: |
4633a7c4 | 7436 | switch (*proto++) { |
5b794e05 JH |
7437 | case '[': |
7438 | if (contextclass++ == 0) { | |
841d93c8 | 7439 | e = strchr(proto, ']'); |
5b794e05 JH |
7440 | if (!e || e == proto) |
7441 | goto oops; | |
7442 | } | |
7443 | else | |
7444 | goto oops; | |
7445 | goto again; | |
7446 | break; | |
7447 | case ']': | |
466bafcd | 7448 | if (contextclass) { |
a0751766 NC |
7449 | const char *p = proto; |
7450 | const char *const end = proto; | |
466bafcd | 7451 | contextclass = 0; |
466bafcd | 7452 | while (*--p != '['); |
a0751766 NC |
7453 | bad_type(arg, Perl_form(aTHX_ "one of %.*s", |
7454 | (int)(end - p), p), | |
7455 | gv_ename(namegv), o3); | |
466bafcd | 7456 | } else |
5b794e05 JH |
7457 | goto oops; |
7458 | break; | |
4633a7c4 | 7459 | case '*': |
eb8433b7 | 7460 | if (o3->op_type == OP_RV2GV) |
5b794e05 JH |
7461 | goto wrapref; |
7462 | if (!contextclass) | |
eb8433b7 | 7463 | bad_type(arg, "symbol", gv_ename(namegv), o3); |
5b794e05 | 7464 | break; |
4633a7c4 | 7465 | case '&': |
eb8433b7 | 7466 | if (o3->op_type == OP_ENTERSUB) |
5b794e05 JH |
7467 | goto wrapref; |
7468 | if (!contextclass) | |
eb8433b7 NC |
7469 | bad_type(arg, "subroutine entry", gv_ename(namegv), |
7470 | o3); | |
5b794e05 | 7471 | break; |
4633a7c4 | 7472 | case '$': |
eb8433b7 NC |
7473 | if (o3->op_type == OP_RV2SV || |
7474 | o3->op_type == OP_PADSV || | |
7475 | o3->op_type == OP_HELEM || | |
7476 | o3->op_type == OP_AELEM || | |
7477 | o3->op_type == OP_THREADSV) | |
5b794e05 JH |
7478 | goto wrapref; |
7479 | if (!contextclass) | |
eb8433b7 | 7480 | bad_type(arg, "scalar", gv_ename(namegv), o3); |
5b794e05 | 7481 | break; |
4633a7c4 | 7482 | case '@': |
eb8433b7 NC |
7483 | if (o3->op_type == OP_RV2AV || |
7484 | o3->op_type == OP_PADAV) | |
5b794e05 JH |
7485 | goto wrapref; |
7486 | if (!contextclass) | |
eb8433b7 | 7487 | bad_type(arg, "array", gv_ename(namegv), o3); |
5b794e05 | 7488 | break; |
4633a7c4 | 7489 | case '%': |
eb8433b7 NC |
7490 | if (o3->op_type == OP_RV2HV || |
7491 | o3->op_type == OP_PADHV) | |
5b794e05 JH |
7492 | goto wrapref; |
7493 | if (!contextclass) | |
eb8433b7 | 7494 | bad_type(arg, "hash", gv_ename(namegv), o3); |
5b794e05 JH |
7495 | break; |
7496 | wrapref: | |
4633a7c4 | 7497 | { |
551405c4 AL |
7498 | OP* const kid = o2; |
7499 | OP* const sib = kid->op_sibling; | |
4633a7c4 | 7500 | kid->op_sibling = 0; |
6fa846a0 GS |
7501 | o2 = newUNOP(OP_REFGEN, 0, kid); |
7502 | o2->op_sibling = sib; | |
e858de61 | 7503 | prev->op_sibling = o2; |
4633a7c4 | 7504 | } |
841d93c8 | 7505 | if (contextclass && e) { |
5b794e05 JH |
7506 | proto = e + 1; |
7507 | contextclass = 0; | |
7508 | } | |
4633a7c4 LW |
7509 | break; |
7510 | default: goto oops; | |
7511 | } | |
5b794e05 JH |
7512 | if (contextclass) |
7513 | goto again; | |
4633a7c4 | 7514 | break; |
b1cb66bf | 7515 | case ' ': |
7516 | proto++; | |
7517 | continue; | |
4633a7c4 LW |
7518 | default: |
7519 | oops: | |
35c1215d | 7520 | Perl_croak(aTHX_ "Malformed prototype for %s: %"SVf, |
95b63a38 | 7521 | gv_ename(namegv), (void*)cv); |
4633a7c4 LW |
7522 | } |
7523 | } | |
7524 | else | |
11343788 MB |
7525 | list(o2); |
7526 | mod(o2, OP_ENTERSUB); | |
7527 | prev = o2; | |
7528 | o2 = o2->op_sibling; | |
551405c4 | 7529 | } /* while */ |
cbf82dd0 NC |
7530 | if (proto && !optional && proto_end > proto && |
7531 | (*proto != '@' && *proto != '%' && *proto != ';')) | |
5dc0d613 | 7532 | return too_few_arguments(o, gv_ename(namegv)); |
0723351e | 7533 | if(delete_op) { |
eb8433b7 | 7534 | #ifdef PERL_MAD |
1d866c12 | 7535 | OP * const oldo = o; |
eb8433b7 | 7536 | #else |
06492da6 | 7537 | op_free(o); |
eb8433b7 | 7538 | #endif |
06492da6 | 7539 | o=newSVOP(OP_CONST, 0, newSViv(0)); |
eb8433b7 | 7540 | op_getmad(oldo,o,'O'); |
06492da6 | 7541 | } |
11343788 | 7542 | return o; |
79072805 LW |
7543 | } |
7544 | ||
7545 | OP * | |
cea2e8a9 | 7546 | Perl_ck_svconst(pTHX_ OP *o) |
8990e307 | 7547 | { |
96a5add6 | 7548 | PERL_UNUSED_CONTEXT; |
11343788 MB |
7549 | SvREADONLY_on(cSVOPo->op_sv); |
7550 | return o; | |
8990e307 LW |
7551 | } |
7552 | ||
7553 | OP * | |
d4ac975e GA |
7554 | Perl_ck_chdir(pTHX_ OP *o) |
7555 | { | |
7556 | if (o->op_flags & OPf_KIDS) { | |
1496a290 | 7557 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
d4ac975e GA |
7558 | |
7559 | if (kid && kid->op_type == OP_CONST && | |
7560 | (kid->op_private & OPpCONST_BARE)) | |
7561 | { | |
7562 | o->op_flags |= OPf_SPECIAL; | |
7563 | kid->op_private &= ~OPpCONST_STRICT; | |
7564 | } | |
7565 | } | |
7566 | return ck_fun(o); | |
7567 | } | |
7568 | ||
7569 | OP * | |
cea2e8a9 | 7570 | Perl_ck_trunc(pTHX_ OP *o) |
79072805 | 7571 | { |
11343788 MB |
7572 | if (o->op_flags & OPf_KIDS) { |
7573 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 | 7574 | |
a0d0e21e LW |
7575 | if (kid->op_type == OP_NULL) |
7576 | kid = (SVOP*)kid->op_sibling; | |
bb53490d GS |
7577 | if (kid && kid->op_type == OP_CONST && |
7578 | (kid->op_private & OPpCONST_BARE)) | |
7579 | { | |
11343788 | 7580 | o->op_flags |= OPf_SPECIAL; |
bb53490d GS |
7581 | kid->op_private &= ~OPpCONST_STRICT; |
7582 | } | |
79072805 | 7583 | } |
11343788 | 7584 | return ck_fun(o); |
79072805 LW |
7585 | } |
7586 | ||
35fba0d9 | 7587 | OP * |
bab9c0ac RGS |
7588 | Perl_ck_unpack(pTHX_ OP *o) |
7589 | { | |
7590 | OP *kid = cLISTOPo->op_first; | |
7591 | if (kid->op_sibling) { | |
7592 | kid = kid->op_sibling; | |
7593 | if (!kid->op_sibling) | |
7594 | kid->op_sibling = newDEFSVOP(); | |
7595 | } | |
7596 | return ck_fun(o); | |
7597 | } | |
7598 | ||
7599 | OP * | |
35fba0d9 RG |
7600 | Perl_ck_substr(pTHX_ OP *o) |
7601 | { | |
7602 | o = ck_fun(o); | |
1d866c12 | 7603 | if ((o->op_flags & OPf_KIDS) && (o->op_private == 4)) { |
35fba0d9 RG |
7604 | OP *kid = cLISTOPo->op_first; |
7605 | ||
7606 | if (kid->op_type == OP_NULL) | |
7607 | kid = kid->op_sibling; | |
7608 | if (kid) | |
7609 | kid->op_flags |= OPf_MOD; | |
7610 | ||
7611 | } | |
7612 | return o; | |
7613 | } | |
7614 | ||
61b743bb DM |
7615 | /* A peephole optimizer. We visit the ops in the order they're to execute. |
7616 | * See the comments at the top of this file for more details about when | |
7617 | * peep() is called */ | |
463ee0b2 | 7618 | |
79072805 | 7619 | void |
864dbfa3 | 7620 | Perl_peep(pTHX_ register OP *o) |
79072805 | 7621 | { |
27da23d5 | 7622 | dVAR; |
c445ea15 | 7623 | register OP* oldop = NULL; |
2d8e6c8d | 7624 | |
2814eb74 | 7625 | if (!o || o->op_opt) |
79072805 | 7626 | return; |
a0d0e21e | 7627 | ENTER; |
462e5cf6 | 7628 | SAVEOP(); |
7766f137 | 7629 | SAVEVPTR(PL_curcop); |
a0d0e21e | 7630 | for (; o; o = o->op_next) { |
2814eb74 | 7631 | if (o->op_opt) |
a0d0e21e | 7632 | break; |
533c011a | 7633 | PL_op = o; |
a0d0e21e | 7634 | switch (o->op_type) { |
acb36ea4 | 7635 | case OP_SETSTATE: |
a0d0e21e LW |
7636 | case OP_NEXTSTATE: |
7637 | case OP_DBSTATE: | |
3280af22 | 7638 | PL_curcop = ((COP*)o); /* for warnings */ |
2814eb74 | 7639 | o->op_opt = 1; |
a0d0e21e LW |
7640 | break; |
7641 | ||
a0d0e21e | 7642 | case OP_CONST: |
7a52d87a GS |
7643 | if (cSVOPo->op_private & OPpCONST_STRICT) |
7644 | no_bareword_allowed(o); | |
7766f137 | 7645 | #ifdef USE_ITHREADS |
3848b962 | 7646 | case OP_METHOD_NAMED: |
7766f137 GS |
7647 | /* Relocate sv to the pad for thread safety. |
7648 | * Despite being a "constant", the SV is written to, | |
7649 | * for reference counts, sv_upgrade() etc. */ | |
7650 | if (cSVOP->op_sv) { | |
6867be6d | 7651 | const PADOFFSET ix = pad_alloc(OP_CONST, SVs_PADTMP); |
330e22d5 | 7652 | if (o->op_type == OP_CONST && SvPADTMP(cSVOPo->op_sv)) { |
6a7129a1 | 7653 | /* If op_sv is already a PADTMP then it is being used by |
9a049f1c | 7654 | * some pad, so make a copy. */ |
dd2155a4 DM |
7655 | sv_setsv(PAD_SVl(ix),cSVOPo->op_sv); |
7656 | SvREADONLY_on(PAD_SVl(ix)); | |
6a7129a1 GS |
7657 | SvREFCNT_dec(cSVOPo->op_sv); |
7658 | } | |
052ca17e NC |
7659 | else if (o->op_type == OP_CONST |
7660 | && cSVOPo->op_sv == &PL_sv_undef) { | |
7661 | /* PL_sv_undef is hack - it's unsafe to store it in the | |
7662 | AV that is the pad, because av_fetch treats values of | |
7663 | PL_sv_undef as a "free" AV entry and will merrily | |
7664 | replace them with a new SV, causing pad_alloc to think | |
7665 | that this pad slot is free. (When, clearly, it is not) | |
7666 | */ | |
7667 | SvOK_off(PAD_SVl(ix)); | |
7668 | SvPADTMP_on(PAD_SVl(ix)); | |
7669 | SvREADONLY_on(PAD_SVl(ix)); | |
7670 | } | |
6a7129a1 | 7671 | else { |
dd2155a4 | 7672 | SvREFCNT_dec(PAD_SVl(ix)); |
6a7129a1 | 7673 | SvPADTMP_on(cSVOPo->op_sv); |
dd2155a4 | 7674 | PAD_SETSV(ix, cSVOPo->op_sv); |
9a049f1c | 7675 | /* XXX I don't know how this isn't readonly already. */ |
dd2155a4 | 7676 | SvREADONLY_on(PAD_SVl(ix)); |
6a7129a1 | 7677 | } |
a0714e2c | 7678 | cSVOPo->op_sv = NULL; |
7766f137 GS |
7679 | o->op_targ = ix; |
7680 | } | |
7681 | #endif | |
2814eb74 | 7682 | o->op_opt = 1; |
07447971 GS |
7683 | break; |
7684 | ||
df91b2c5 AE |
7685 | case OP_CONCAT: |
7686 | if (o->op_next && o->op_next->op_type == OP_STRINGIFY) { | |
7687 | if (o->op_next->op_private & OPpTARGET_MY) { | |
7688 | if (o->op_flags & OPf_STACKED) /* chained concats */ | |
7689 | goto ignore_optimization; | |
7690 | else { | |
7691 | /* assert(PL_opargs[o->op_type] & OA_TARGLEX); */ | |
7692 | o->op_targ = o->op_next->op_targ; | |
7693 | o->op_next->op_targ = 0; | |
7694 | o->op_private |= OPpTARGET_MY; | |
7695 | } | |
7696 | } | |
7697 | op_null(o->op_next); | |
7698 | } | |
7699 | ignore_optimization: | |
2814eb74 | 7700 | o->op_opt = 1; |
df91b2c5 | 7701 | break; |
8990e307 | 7702 | case OP_STUB: |
54310121 | 7703 | if ((o->op_flags & OPf_WANT) != OPf_WANT_LIST) { |
2814eb74 | 7704 | o->op_opt = 1; |
54310121 | 7705 | break; /* Scalar stub must produce undef. List stub is noop */ |
8990e307 | 7706 | } |
748a9306 | 7707 | goto nothin; |
79072805 | 7708 | case OP_NULL: |
acb36ea4 GS |
7709 | if (o->op_targ == OP_NEXTSTATE |
7710 | || o->op_targ == OP_DBSTATE | |
7711 | || o->op_targ == OP_SETSTATE) | |
7712 | { | |
3280af22 | 7713 | PL_curcop = ((COP*)o); |
acb36ea4 | 7714 | } |
dad75012 AMS |
7715 | /* XXX: We avoid setting op_seq here to prevent later calls |
7716 | to peep() from mistakenly concluding that optimisation | |
7717 | has already occurred. This doesn't fix the real problem, | |
7718 | though (See 20010220.007). AMS 20010719 */ | |
2814eb74 | 7719 | /* op_seq functionality is now replaced by op_opt */ |
dad75012 AMS |
7720 | if (oldop && o->op_next) { |
7721 | oldop->op_next = o->op_next; | |
7722 | continue; | |
7723 | } | |
7724 | break; | |
79072805 | 7725 | case OP_SCALAR: |
93a17b20 | 7726 | case OP_LINESEQ: |
463ee0b2 | 7727 | case OP_SCOPE: |
748a9306 | 7728 | nothin: |
a0d0e21e LW |
7729 | if (oldop && o->op_next) { |
7730 | oldop->op_next = o->op_next; | |
79072805 LW |
7731 | continue; |
7732 | } | |
2814eb74 | 7733 | o->op_opt = 1; |
79072805 LW |
7734 | break; |
7735 | ||
6a077020 | 7736 | case OP_PADAV: |
79072805 | 7737 | case OP_GV: |
6a077020 | 7738 | if (o->op_type == OP_PADAV || o->op_next->op_type == OP_RV2AV) { |
0bd48802 | 7739 | OP* const pop = (o->op_type == OP_PADAV) ? |
6a077020 | 7740 | o->op_next : o->op_next->op_next; |
a0d0e21e | 7741 | IV i; |
f9dc862f | 7742 | if (pop && pop->op_type == OP_CONST && |
af5acbb4 | 7743 | ((PL_op = pop->op_next)) && |
8990e307 | 7744 | pop->op_next->op_type == OP_AELEM && |
a0d0e21e | 7745 | !(pop->op_next->op_private & |
78f9721b | 7746 | (OPpLVAL_INTRO|OPpLVAL_DEFER|OPpDEREF|OPpMAYBE_LVSUB)) && |
fc15ae8f | 7747 | (i = SvIV(((SVOP*)pop)->op_sv) - CopARYBASE_get(PL_curcop)) |
a0d0e21e | 7748 | <= 255 && |
8990e307 LW |
7749 | i >= 0) |
7750 | { | |
350de78d | 7751 | GV *gv; |
af5acbb4 DM |
7752 | if (cSVOPx(pop)->op_private & OPpCONST_STRICT) |
7753 | no_bareword_allowed(pop); | |
6a077020 DM |
7754 | if (o->op_type == OP_GV) |
7755 | op_null(o->op_next); | |
93c66552 DM |
7756 | op_null(pop->op_next); |
7757 | op_null(pop); | |
a0d0e21e LW |
7758 | o->op_flags |= pop->op_next->op_flags & OPf_MOD; |
7759 | o->op_next = pop->op_next->op_next; | |
22c35a8c | 7760 | o->op_ppaddr = PL_ppaddr[OP_AELEMFAST]; |
a0d0e21e | 7761 | o->op_private = (U8)i; |
6a077020 DM |
7762 | if (o->op_type == OP_GV) { |
7763 | gv = cGVOPo_gv; | |
7764 | GvAVn(gv); | |
7765 | } | |
7766 | else | |
7767 | o->op_flags |= OPf_SPECIAL; | |
7768 | o->op_type = OP_AELEMFAST; | |
7769 | } | |
7770 | o->op_opt = 1; | |
7771 | break; | |
7772 | } | |
7773 | ||
7774 | if (o->op_next->op_type == OP_RV2SV) { | |
7775 | if (!(o->op_next->op_private & OPpDEREF)) { | |
7776 | op_null(o->op_next); | |
7777 | o->op_private |= o->op_next->op_private & (OPpLVAL_INTRO | |
7778 | | OPpOUR_INTRO); | |
7779 | o->op_next = o->op_next->op_next; | |
7780 | o->op_type = OP_GVSV; | |
7781 | o->op_ppaddr = PL_ppaddr[OP_GVSV]; | |
8990e307 | 7782 | } |
79072805 | 7783 | } |
e476b1b5 | 7784 | else if ((o->op_private & OPpEARLY_CV) && ckWARN(WARN_PROTOTYPE)) { |
551405c4 | 7785 | GV * const gv = cGVOPo_gv; |
b15aece3 | 7786 | if (SvTYPE(gv) == SVt_PVGV && GvCV(gv) && SvPVX_const(GvCV(gv))) { |
76cd736e | 7787 | /* XXX could check prototype here instead of just carping */ |
551405c4 | 7788 | SV * const sv = sv_newmortal(); |
bd61b366 | 7789 | gv_efullname3(sv, gv, NULL); |
9014280d | 7790 | Perl_warner(aTHX_ packWARN(WARN_PROTOTYPE), |
35c1215d | 7791 | "%"SVf"() called too early to check prototype", |
95b63a38 | 7792 | (void*)sv); |
76cd736e GS |
7793 | } |
7794 | } | |
89de2904 AMS |
7795 | else if (o->op_next->op_type == OP_READLINE |
7796 | && o->op_next->op_next->op_type == OP_CONCAT | |
7797 | && (o->op_next->op_next->op_flags & OPf_STACKED)) | |
7798 | { | |
d2c45030 AMS |
7799 | /* Turn "$a .= <FH>" into an OP_RCATLINE. AMS 20010917 */ |
7800 | o->op_type = OP_RCATLINE; | |
7801 | o->op_flags |= OPf_STACKED; | |
7802 | o->op_ppaddr = PL_ppaddr[OP_RCATLINE]; | |
89de2904 | 7803 | op_null(o->op_next->op_next); |
d2c45030 | 7804 | op_null(o->op_next); |
89de2904 | 7805 | } |
76cd736e | 7806 | |
2814eb74 | 7807 | o->op_opt = 1; |
79072805 LW |
7808 | break; |
7809 | ||
a0d0e21e | 7810 | case OP_MAPWHILE: |
79072805 LW |
7811 | case OP_GREPWHILE: |
7812 | case OP_AND: | |
7813 | case OP_OR: | |
c963b151 | 7814 | case OP_DOR: |
2c2d71f5 JH |
7815 | case OP_ANDASSIGN: |
7816 | case OP_ORASSIGN: | |
c963b151 | 7817 | case OP_DORASSIGN: |
1a67a97c SM |
7818 | case OP_COND_EXPR: |
7819 | case OP_RANGE: | |
2814eb74 | 7820 | o->op_opt = 1; |
fd4d1407 IZ |
7821 | while (cLOGOP->op_other->op_type == OP_NULL) |
7822 | cLOGOP->op_other = cLOGOP->op_other->op_next; | |
a2efc822 | 7823 | peep(cLOGOP->op_other); /* Recursive calls are not replaced by fptr calls */ |
79072805 LW |
7824 | break; |
7825 | ||
79072805 | 7826 | case OP_ENTERLOOP: |
9c2ca71a | 7827 | case OP_ENTERITER: |
2814eb74 | 7828 | o->op_opt = 1; |
58cccf98 SM |
7829 | while (cLOOP->op_redoop->op_type == OP_NULL) |
7830 | cLOOP->op_redoop = cLOOP->op_redoop->op_next; | |
79072805 | 7831 | peep(cLOOP->op_redoop); |
58cccf98 SM |
7832 | while (cLOOP->op_nextop->op_type == OP_NULL) |
7833 | cLOOP->op_nextop = cLOOP->op_nextop->op_next; | |
79072805 | 7834 | peep(cLOOP->op_nextop); |
58cccf98 SM |
7835 | while (cLOOP->op_lastop->op_type == OP_NULL) |
7836 | cLOOP->op_lastop = cLOOP->op_lastop->op_next; | |
79072805 LW |
7837 | peep(cLOOP->op_lastop); |
7838 | break; | |
7839 | ||
8782bef2 | 7840 | case OP_QR: |
79072805 LW |
7841 | case OP_MATCH: |
7842 | case OP_SUBST: | |
2814eb74 | 7843 | o->op_opt = 1; |
9041c2e3 | 7844 | while (cPMOP->op_pmreplstart && |
58cccf98 SM |
7845 | cPMOP->op_pmreplstart->op_type == OP_NULL) |
7846 | cPMOP->op_pmreplstart = cPMOP->op_pmreplstart->op_next; | |
a0d0e21e | 7847 | peep(cPMOP->op_pmreplstart); |
79072805 LW |
7848 | break; |
7849 | ||
a0d0e21e | 7850 | case OP_EXEC: |
2814eb74 | 7851 | o->op_opt = 1; |
041457d9 DM |
7852 | if (o->op_next && o->op_next->op_type == OP_NEXTSTATE |
7853 | && ckWARN(WARN_SYNTAX)) | |
7854 | { | |
1496a290 AL |
7855 | if (o->op_next->op_sibling) { |
7856 | const OPCODE type = o->op_next->op_sibling->op_type; | |
7857 | if (type != OP_EXIT && type != OP_WARN && type != OP_DIE) { | |
7858 | const line_t oldline = CopLINE(PL_curcop); | |
7859 | CopLINE_set(PL_curcop, CopLINE((COP*)o->op_next)); | |
7860 | Perl_warner(aTHX_ packWARN(WARN_EXEC), | |
7861 | "Statement unlikely to be reached"); | |
7862 | Perl_warner(aTHX_ packWARN(WARN_EXEC), | |
7863 | "\t(Maybe you meant system() when you said exec()?)\n"); | |
7864 | CopLINE_set(PL_curcop, oldline); | |
7865 | } | |
a0d0e21e LW |
7866 | } |
7867 | } | |
7868 | break; | |
b2ffa427 | 7869 | |
c750a3ec | 7870 | case OP_HELEM: { |
e75d1f10 | 7871 | UNOP *rop; |
6d822dc4 | 7872 | SV *lexname; |
e75d1f10 | 7873 | GV **fields; |
6d822dc4 | 7874 | SV **svp, *sv; |
d5263905 | 7875 | const char *key = NULL; |
c750a3ec | 7876 | STRLEN keylen; |
b2ffa427 | 7877 | |
2814eb74 | 7878 | o->op_opt = 1; |
1c846c1f NIS |
7879 | |
7880 | if (((BINOP*)o)->op_last->op_type != OP_CONST) | |
c750a3ec | 7881 | break; |
1c846c1f NIS |
7882 | |
7883 | /* Make the CONST have a shared SV */ | |
7884 | svp = cSVOPx_svp(((BINOP*)o)->op_last); | |
3049cdab | 7885 | if ((!SvFAKE(sv = *svp) || !SvREADONLY(sv)) && !IS_PADCONST(sv)) { |
d5263905 | 7886 | key = SvPV_const(sv, keylen); |
25716404 | 7887 | lexname = newSVpvn_share(key, |
bb7a0f54 | 7888 | SvUTF8(sv) ? -(I32)keylen : (I32)keylen, |
25716404 | 7889 | 0); |
1c846c1f NIS |
7890 | SvREFCNT_dec(sv); |
7891 | *svp = lexname; | |
7892 | } | |
e75d1f10 RD |
7893 | |
7894 | if ((o->op_private & (OPpLVAL_INTRO))) | |
7895 | break; | |
7896 | ||
7897 | rop = (UNOP*)((BINOP*)o)->op_first; | |
7898 | if (rop->op_type != OP_RV2HV || rop->op_first->op_type != OP_PADSV) | |
7899 | break; | |
7900 | lexname = *av_fetch(PL_comppad_name, rop->op_first->op_targ, TRUE); | |
00b1698f | 7901 | if (!SvPAD_TYPED(lexname)) |
e75d1f10 | 7902 | break; |
a4fc7abc | 7903 | fields = (GV**)hv_fetchs(SvSTASH(lexname), "FIELDS", FALSE); |
e75d1f10 RD |
7904 | if (!fields || !GvHV(*fields)) |
7905 | break; | |
93524f2b | 7906 | key = SvPV_const(*svp, keylen); |
e75d1f10 | 7907 | if (!hv_fetch(GvHV(*fields), key, |
bb7a0f54 | 7908 | SvUTF8(*svp) ? -(I32)keylen : (I32)keylen, FALSE)) |
e75d1f10 RD |
7909 | { |
7910 | Perl_croak(aTHX_ "No such class field \"%s\" " | |
7911 | "in variable %s of type %s", | |
93524f2b | 7912 | key, SvPV_nolen_const(lexname), HvNAME_get(SvSTASH(lexname))); |
e75d1f10 RD |
7913 | } |
7914 | ||
6d822dc4 MS |
7915 | break; |
7916 | } | |
c750a3ec | 7917 | |
e75d1f10 RD |
7918 | case OP_HSLICE: { |
7919 | UNOP *rop; | |
7920 | SV *lexname; | |
7921 | GV **fields; | |
7922 | SV **svp; | |
93524f2b | 7923 | const char *key; |
e75d1f10 RD |
7924 | STRLEN keylen; |
7925 | SVOP *first_key_op, *key_op; | |
7926 | ||
7927 | if ((o->op_private & (OPpLVAL_INTRO)) | |
7928 | /* I bet there's always a pushmark... */ | |
7929 | || ((LISTOP*)o)->op_first->op_sibling->op_type != OP_LIST) | |
7930 | /* hmmm, no optimization if list contains only one key. */ | |
7931 | break; | |
7932 | rop = (UNOP*)((LISTOP*)o)->op_last; | |
7933 | if (rop->op_type != OP_RV2HV) | |
7934 | break; | |
7935 | if (rop->op_first->op_type == OP_PADSV) | |
7936 | /* @$hash{qw(keys here)} */ | |
7937 | rop = (UNOP*)rop->op_first; | |
7938 | else { | |
7939 | /* @{$hash}{qw(keys here)} */ | |
7940 | if (rop->op_first->op_type == OP_SCOPE | |
7941 | && cLISTOPx(rop->op_first)->op_last->op_type == OP_PADSV) | |
7942 | { | |
7943 | rop = (UNOP*)cLISTOPx(rop->op_first)->op_last; | |
7944 | } | |
7945 | else | |
7946 | break; | |
7947 | } | |
7948 | ||
7949 | lexname = *av_fetch(PL_comppad_name, rop->op_targ, TRUE); | |
00b1698f | 7950 | if (!SvPAD_TYPED(lexname)) |
e75d1f10 | 7951 | break; |
a4fc7abc | 7952 | fields = (GV**)hv_fetchs(SvSTASH(lexname), "FIELDS", FALSE); |
e75d1f10 RD |
7953 | if (!fields || !GvHV(*fields)) |
7954 | break; | |
7955 | /* Again guessing that the pushmark can be jumped over.... */ | |
7956 | first_key_op = (SVOP*)((LISTOP*)((LISTOP*)o)->op_first->op_sibling) | |
7957 | ->op_first->op_sibling; | |
7958 | for (key_op = first_key_op; key_op; | |
7959 | key_op = (SVOP*)key_op->op_sibling) { | |
7960 | if (key_op->op_type != OP_CONST) | |
7961 | continue; | |
7962 | svp = cSVOPx_svp(key_op); | |
93524f2b | 7963 | key = SvPV_const(*svp, keylen); |
e75d1f10 | 7964 | if (!hv_fetch(GvHV(*fields), key, |
bb7a0f54 | 7965 | SvUTF8(*svp) ? -(I32)keylen : (I32)keylen, FALSE)) |
e75d1f10 RD |
7966 | { |
7967 | Perl_croak(aTHX_ "No such class field \"%s\" " | |
7968 | "in variable %s of type %s", | |
bfcb3514 | 7969 | key, SvPV_nolen(lexname), HvNAME_get(SvSTASH(lexname))); |
e75d1f10 RD |
7970 | } |
7971 | } | |
7972 | break; | |
7973 | } | |
7974 | ||
fe1bc4cf | 7975 | case OP_SORT: { |
fe1bc4cf | 7976 | /* will point to RV2AV or PADAV op on LHS/RHS of assign */ |
551405c4 | 7977 | OP *oleft; |
fe1bc4cf DM |
7978 | OP *o2; |
7979 | ||
fe1bc4cf | 7980 | /* check that RHS of sort is a single plain array */ |
551405c4 | 7981 | OP *oright = cUNOPo->op_first; |
fe1bc4cf DM |
7982 | if (!oright || oright->op_type != OP_PUSHMARK) |
7983 | break; | |
471178c0 NC |
7984 | |
7985 | /* reverse sort ... can be optimised. */ | |
7986 | if (!cUNOPo->op_sibling) { | |
7987 | /* Nothing follows us on the list. */ | |
551405c4 | 7988 | OP * const reverse = o->op_next; |
471178c0 NC |
7989 | |
7990 | if (reverse->op_type == OP_REVERSE && | |
7991 | (reverse->op_flags & OPf_WANT) == OPf_WANT_LIST) { | |
551405c4 | 7992 | OP * const pushmark = cUNOPx(reverse)->op_first; |
471178c0 NC |
7993 | if (pushmark && (pushmark->op_type == OP_PUSHMARK) |
7994 | && (cUNOPx(pushmark)->op_sibling == o)) { | |
7995 | /* reverse -> pushmark -> sort */ | |
7996 | o->op_private |= OPpSORT_REVERSE; | |
7997 | op_null(reverse); | |
7998 | pushmark->op_next = oright->op_next; | |
7999 | op_null(oright); | |
8000 | } | |
8001 | } | |
8002 | } | |
8003 | ||
8004 | /* make @a = sort @a act in-place */ | |
8005 | ||
8006 | o->op_opt = 1; | |
8007 | ||
fe1bc4cf DM |
8008 | oright = cUNOPx(oright)->op_sibling; |
8009 | if (!oright) | |
8010 | break; | |
8011 | if (oright->op_type == OP_NULL) { /* skip sort block/sub */ | |
8012 | oright = cUNOPx(oright)->op_sibling; | |
8013 | } | |
8014 | ||
8015 | if (!oright || | |
8016 | (oright->op_type != OP_RV2AV && oright->op_type != OP_PADAV) | |
8017 | || oright->op_next != o | |
8018 | || (oright->op_private & OPpLVAL_INTRO) | |
8019 | ) | |
8020 | break; | |
8021 | ||
8022 | /* o2 follows the chain of op_nexts through the LHS of the | |
8023 | * assign (if any) to the aassign op itself */ | |
8024 | o2 = o->op_next; | |
8025 | if (!o2 || o2->op_type != OP_NULL) | |
8026 | break; | |
8027 | o2 = o2->op_next; | |
8028 | if (!o2 || o2->op_type != OP_PUSHMARK) | |
8029 | break; | |
8030 | o2 = o2->op_next; | |
8031 | if (o2 && o2->op_type == OP_GV) | |
8032 | o2 = o2->op_next; | |
8033 | if (!o2 | |
8034 | || (o2->op_type != OP_PADAV && o2->op_type != OP_RV2AV) | |
8035 | || (o2->op_private & OPpLVAL_INTRO) | |
8036 | ) | |
8037 | break; | |
8038 | oleft = o2; | |
8039 | o2 = o2->op_next; | |
8040 | if (!o2 || o2->op_type != OP_NULL) | |
8041 | break; | |
8042 | o2 = o2->op_next; | |
8043 | if (!o2 || o2->op_type != OP_AASSIGN | |
8044 | || (o2->op_flags & OPf_WANT) != OPf_WANT_VOID) | |
8045 | break; | |
8046 | ||
db7511db DM |
8047 | /* check that the sort is the first arg on RHS of assign */ |
8048 | ||
8049 | o2 = cUNOPx(o2)->op_first; | |
8050 | if (!o2 || o2->op_type != OP_NULL) | |
8051 | break; | |
8052 | o2 = cUNOPx(o2)->op_first; | |
8053 | if (!o2 || o2->op_type != OP_PUSHMARK) | |
8054 | break; | |
8055 | if (o2->op_sibling != o) | |
8056 | break; | |
8057 | ||
fe1bc4cf DM |
8058 | /* check the array is the same on both sides */ |
8059 | if (oleft->op_type == OP_RV2AV) { | |
8060 | if (oright->op_type != OP_RV2AV | |
8061 | || !cUNOPx(oright)->op_first | |
8062 | || cUNOPx(oright)->op_first->op_type != OP_GV | |
8063 | || cGVOPx_gv(cUNOPx(oleft)->op_first) != | |
8064 | cGVOPx_gv(cUNOPx(oright)->op_first) | |
8065 | ) | |
8066 | break; | |
8067 | } | |
8068 | else if (oright->op_type != OP_PADAV | |
8069 | || oright->op_targ != oleft->op_targ | |
8070 | ) | |
8071 | break; | |
8072 | ||
8073 | /* transfer MODishness etc from LHS arg to RHS arg */ | |
8074 | oright->op_flags = oleft->op_flags; | |
8075 | o->op_private |= OPpSORT_INPLACE; | |
8076 | ||
8077 | /* excise push->gv->rv2av->null->aassign */ | |
8078 | o2 = o->op_next->op_next; | |
8079 | op_null(o2); /* PUSHMARK */ | |
8080 | o2 = o2->op_next; | |
8081 | if (o2->op_type == OP_GV) { | |
8082 | op_null(o2); /* GV */ | |
8083 | o2 = o2->op_next; | |
8084 | } | |
8085 | op_null(o2); /* RV2AV or PADAV */ | |
8086 | o2 = o2->op_next->op_next; | |
8087 | op_null(o2); /* AASSIGN */ | |
8088 | ||
8089 | o->op_next = o2->op_next; | |
8090 | ||
8091 | break; | |
8092 | } | |
ef3e5ea9 NC |
8093 | |
8094 | case OP_REVERSE: { | |
e682d7b7 | 8095 | OP *ourmark, *theirmark, *ourlast, *iter, *expushmark, *rv2av; |
ce335f37 | 8096 | OP *gvop = NULL; |
ef3e5ea9 NC |
8097 | LISTOP *enter, *exlist; |
8098 | o->op_opt = 1; | |
8099 | ||
8100 | enter = (LISTOP *) o->op_next; | |
8101 | if (!enter) | |
8102 | break; | |
8103 | if (enter->op_type == OP_NULL) { | |
8104 | enter = (LISTOP *) enter->op_next; | |
8105 | if (!enter) | |
8106 | break; | |
8107 | } | |
d46f46af NC |
8108 | /* for $a (...) will have OP_GV then OP_RV2GV here. |
8109 | for (...) just has an OP_GV. */ | |
ce335f37 NC |
8110 | if (enter->op_type == OP_GV) { |
8111 | gvop = (OP *) enter; | |
8112 | enter = (LISTOP *) enter->op_next; | |
8113 | if (!enter) | |
8114 | break; | |
d46f46af NC |
8115 | if (enter->op_type == OP_RV2GV) { |
8116 | enter = (LISTOP *) enter->op_next; | |
8117 | if (!enter) | |
ce335f37 | 8118 | break; |
d46f46af | 8119 | } |
ce335f37 NC |
8120 | } |
8121 | ||
ef3e5ea9 NC |
8122 | if (enter->op_type != OP_ENTERITER) |
8123 | break; | |
8124 | ||
8125 | iter = enter->op_next; | |
8126 | if (!iter || iter->op_type != OP_ITER) | |
8127 | break; | |
8128 | ||
ce335f37 NC |
8129 | expushmark = enter->op_first; |
8130 | if (!expushmark || expushmark->op_type != OP_NULL | |
8131 | || expushmark->op_targ != OP_PUSHMARK) | |
8132 | break; | |
8133 | ||
8134 | exlist = (LISTOP *) expushmark->op_sibling; | |
ef3e5ea9 NC |
8135 | if (!exlist || exlist->op_type != OP_NULL |
8136 | || exlist->op_targ != OP_LIST) | |
8137 | break; | |
8138 | ||
8139 | if (exlist->op_last != o) { | |
8140 | /* Mmm. Was expecting to point back to this op. */ | |
8141 | break; | |
8142 | } | |
8143 | theirmark = exlist->op_first; | |
8144 | if (!theirmark || theirmark->op_type != OP_PUSHMARK) | |
8145 | break; | |
8146 | ||
c491ecac | 8147 | if (theirmark->op_sibling != o) { |
ef3e5ea9 NC |
8148 | /* There's something between the mark and the reverse, eg |
8149 | for (1, reverse (...)) | |
8150 | so no go. */ | |
8151 | break; | |
8152 | } | |
8153 | ||
c491ecac NC |
8154 | ourmark = ((LISTOP *)o)->op_first; |
8155 | if (!ourmark || ourmark->op_type != OP_PUSHMARK) | |
8156 | break; | |
8157 | ||
ef3e5ea9 NC |
8158 | ourlast = ((LISTOP *)o)->op_last; |
8159 | if (!ourlast || ourlast->op_next != o) | |
8160 | break; | |
8161 | ||
e682d7b7 NC |
8162 | rv2av = ourmark->op_sibling; |
8163 | if (rv2av && rv2av->op_type == OP_RV2AV && rv2av->op_sibling == 0 | |
8164 | && rv2av->op_flags == (OPf_WANT_LIST | OPf_KIDS) | |
8165 | && enter->op_flags == (OPf_WANT_LIST | OPf_KIDS)) { | |
8166 | /* We're just reversing a single array. */ | |
8167 | rv2av->op_flags = OPf_WANT_SCALAR | OPf_KIDS | OPf_REF; | |
8168 | enter->op_flags |= OPf_STACKED; | |
8169 | } | |
8170 | ||
ef3e5ea9 NC |
8171 | /* We don't have control over who points to theirmark, so sacrifice |
8172 | ours. */ | |
8173 | theirmark->op_next = ourmark->op_next; | |
8174 | theirmark->op_flags = ourmark->op_flags; | |
ce335f37 | 8175 | ourlast->op_next = gvop ? gvop : (OP *) enter; |
ef3e5ea9 NC |
8176 | op_null(ourmark); |
8177 | op_null(o); | |
8178 | enter->op_private |= OPpITER_REVERSED; | |
8179 | iter->op_private |= OPpITER_REVERSED; | |
8180 | ||
8181 | break; | |
8182 | } | |
e26df76a NC |
8183 | |
8184 | case OP_SASSIGN: { | |
8185 | OP *rv2gv; | |
8186 | UNOP *refgen, *rv2cv; | |
8187 | LISTOP *exlist; | |
8188 | ||
8189 | /* I do not understand this, but if o->op_opt isn't set to 1, | |
8190 | various tests in ext/B/t/bytecode.t fail with no readily | |
8191 | apparent cause. */ | |
8192 | ||
8193 | o->op_opt = 1; | |
8194 | ||
de3370bc NC |
8195 | |
8196 | if ((o->op_flags && OPf_WANT) != OPf_WANT_VOID) | |
8197 | break; | |
8198 | ||
e26df76a NC |
8199 | if ((o->op_private & ~OPpASSIGN_BACKWARDS) != 2) |
8200 | break; | |
8201 | ||
8202 | rv2gv = ((BINOP *)o)->op_last; | |
8203 | if (!rv2gv || rv2gv->op_type != OP_RV2GV) | |
8204 | break; | |
8205 | ||
8206 | refgen = (UNOP *)((BINOP *)o)->op_first; | |
8207 | ||
8208 | if (!refgen || refgen->op_type != OP_REFGEN) | |
8209 | break; | |
8210 | ||
8211 | exlist = (LISTOP *)refgen->op_first; | |
8212 | if (!exlist || exlist->op_type != OP_NULL | |
8213 | || exlist->op_targ != OP_LIST) | |
8214 | break; | |
8215 | ||
8216 | if (exlist->op_first->op_type != OP_PUSHMARK) | |
8217 | break; | |
8218 | ||
8219 | rv2cv = (UNOP*)exlist->op_last; | |
8220 | ||
8221 | if (rv2cv->op_type != OP_RV2CV) | |
8222 | break; | |
8223 | ||
8224 | assert ((rv2gv->op_private & OPpDONT_INIT_GV) == 0); | |
8225 | assert ((o->op_private & OPpASSIGN_CV_TO_GV) == 0); | |
8226 | assert ((rv2cv->op_private & OPpMAY_RETURN_CONSTANT) == 0); | |
8227 | ||
8228 | o->op_private |= OPpASSIGN_CV_TO_GV; | |
8229 | rv2gv->op_private |= OPpDONT_INIT_GV; | |
8230 | rv2cv->op_private |= OPpMAY_RETURN_CONSTANT; | |
8231 | ||
8232 | break; | |
8233 | } | |
8234 | ||
fe1bc4cf | 8235 | |
79072805 | 8236 | default: |
2814eb74 | 8237 | o->op_opt = 1; |
79072805 LW |
8238 | break; |
8239 | } | |
a0d0e21e | 8240 | oldop = o; |
79072805 | 8241 | } |
a0d0e21e | 8242 | LEAVE; |
79072805 | 8243 | } |
beab0874 | 8244 | |
1cb0ed9b RGS |
8245 | char* |
8246 | Perl_custom_op_name(pTHX_ const OP* o) | |
53e06cf0 | 8247 | { |
97aff369 | 8248 | dVAR; |
e1ec3a88 | 8249 | const IV index = PTR2IV(o->op_ppaddr); |
53e06cf0 SC |
8250 | SV* keysv; |
8251 | HE* he; | |
8252 | ||
8253 | if (!PL_custom_op_names) /* This probably shouldn't happen */ | |
27da23d5 | 8254 | return (char *)PL_op_name[OP_CUSTOM]; |
53e06cf0 SC |
8255 | |
8256 | keysv = sv_2mortal(newSViv(index)); | |
8257 | ||
8258 | he = hv_fetch_ent(PL_custom_op_names, keysv, 0, 0); | |
8259 | if (!he) | |
27da23d5 | 8260 | return (char *)PL_op_name[OP_CUSTOM]; /* Don't know who you are */ |
53e06cf0 SC |
8261 | |
8262 | return SvPV_nolen(HeVAL(he)); | |
8263 | } | |
8264 | ||
1cb0ed9b RGS |
8265 | char* |
8266 | Perl_custom_op_desc(pTHX_ const OP* o) | |
53e06cf0 | 8267 | { |
97aff369 | 8268 | dVAR; |
e1ec3a88 | 8269 | const IV index = PTR2IV(o->op_ppaddr); |
53e06cf0 SC |
8270 | SV* keysv; |
8271 | HE* he; | |
8272 | ||
8273 | if (!PL_custom_op_descs) | |
27da23d5 | 8274 | return (char *)PL_op_desc[OP_CUSTOM]; |
53e06cf0 SC |
8275 | |
8276 | keysv = sv_2mortal(newSViv(index)); | |
8277 | ||
8278 | he = hv_fetch_ent(PL_custom_op_descs, keysv, 0, 0); | |
8279 | if (!he) | |
27da23d5 | 8280 | return (char *)PL_op_desc[OP_CUSTOM]; |
53e06cf0 SC |
8281 | |
8282 | return SvPV_nolen(HeVAL(he)); | |
8283 | } | |
19e8ce8e | 8284 | |
beab0874 JT |
8285 | #include "XSUB.h" |
8286 | ||
8287 | /* Efficient sub that returns a constant scalar value. */ | |
8288 | static void | |
acfe0abc | 8289 | const_sv_xsub(pTHX_ CV* cv) |
beab0874 | 8290 | { |
97aff369 | 8291 | dVAR; |
beab0874 | 8292 | dXSARGS; |
9cbac4c7 | 8293 | if (items != 0) { |
6f207bd3 | 8294 | NOOP; |
9cbac4c7 DM |
8295 | #if 0 |
8296 | Perl_croak(aTHX_ "usage: %s::%s()", | |
bfcb3514 | 8297 | HvNAME_get(GvSTASH(CvGV(cv))), GvNAME(CvGV(cv))); |
9cbac4c7 DM |
8298 | #endif |
8299 | } | |
9a049f1c | 8300 | EXTEND(sp, 1); |
0768512c | 8301 | ST(0) = (SV*)XSANY.any_ptr; |
beab0874 JT |
8302 | XSRETURN(1); |
8303 | } | |
4946a0fa NC |
8304 | |
8305 | /* | |
8306 | * Local variables: | |
8307 | * c-indentation-style: bsd | |
8308 | * c-basic-offset: 4 | |
8309 | * indent-tabs-mode: t | |
8310 | * End: | |
8311 | * | |
37442d52 RGS |
8312 | * ex: set ts=8 sts=4 sw=4 noet: |
8313 | */ |