Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* op.c |
79072805 | 2 | * |
1129b882 NC |
3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
4 | * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others | |
79072805 LW |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public | |
7 | * License or the Artistic License, as specified in the README file. | |
8 | * | |
a0d0e21e LW |
9 | */ |
10 | ||
11 | /* | |
4ac71550 TC |
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 | |
17 | * | |
18 | * [p.23 of _The Lord of the Rings_, I/i: "A Long-Expected Party"] | |
79072805 LW |
19 | */ |
20 | ||
166f8a29 DM |
21 | /* This file contains the functions that create, manipulate and optimize |
22 | * the OP structures that hold a compiled perl program. | |
23 | * | |
24 | * A Perl program is compiled into a tree of OPs. Each op contains | |
25 | * structural pointers (eg to its siblings and the next op in the | |
26 | * execution sequence), a pointer to the function that would execute the | |
27 | * op, plus any data specific to that op. For example, an OP_CONST op | |
28 | * points to the pp_const() function and to an SV containing the constant | |
29 | * value. When pp_const() is executed, its job is to push that SV onto the | |
30 | * stack. | |
31 | * | |
32 | * OPs are mainly created by the newFOO() functions, which are mainly | |
33 | * called from the parser (in perly.y) as the code is parsed. For example | |
34 | * the Perl code $a + $b * $c would cause the equivalent of the following | |
35 | * to be called (oversimplifying a bit): | |
36 | * | |
37 | * newBINOP(OP_ADD, flags, | |
38 | * newSVREF($a), | |
39 | * newBINOP(OP_MULTIPLY, flags, newSVREF($b), newSVREF($c)) | |
40 | * ) | |
41 | * | |
42 | * Note that during the build of miniperl, a temporary copy of this file | |
43 | * is made, called opmini.c. | |
44 | */ | |
ccfc67b7 | 45 | |
61b743bb DM |
46 | /* |
47 | Perl's compiler is essentially a 3-pass compiler with interleaved phases: | |
48 | ||
49 | A bottom-up pass | |
50 | A top-down pass | |
51 | An execution-order pass | |
52 | ||
53 | The bottom-up pass is represented by all the "newOP" routines and | |
54 | the ck_ routines. The bottom-upness is actually driven by yacc. | |
55 | So at the point that a ck_ routine fires, we have no idea what the | |
56 | context is, either upward in the syntax tree, or either forward or | |
57 | backward in the execution order. (The bottom-up parser builds that | |
58 | part of the execution order it knows about, but if you follow the "next" | |
59 | links around, you'll find it's actually a closed loop through the | |
ef9da979 | 60 | top level node.) |
61b743bb DM |
61 | |
62 | Whenever the bottom-up parser gets to a node that supplies context to | |
63 | its components, it invokes that portion of the top-down pass that applies | |
64 | to that part of the subtree (and marks the top node as processed, so | |
65 | if a node further up supplies context, it doesn't have to take the | |
66 | plunge again). As a particular subcase of this, as the new node is | |
67 | built, it takes all the closed execution loops of its subcomponents | |
68 | and links them into a new closed loop for the higher level node. But | |
69 | it's still not the real execution order. | |
70 | ||
71 | The actual execution order is not known till we get a grammar reduction | |
72 | to a top-level unit like a subroutine or file that will be called by | |
73 | "name" rather than via a "next" pointer. At that point, we can call | |
74 | into peep() to do that code's portion of the 3rd pass. It has to be | |
75 | recursive, but it's recursive on basic blocks, not on tree nodes. | |
76 | */ | |
77 | ||
06e0342d | 78 | /* To implement user lexical pragmas, there needs to be a way at run time to |
b3ca2e83 NC |
79 | get the compile time state of %^H for that block. Storing %^H in every |
80 | block (or even COP) would be very expensive, so a different approach is | |
81 | taken. The (running) state of %^H is serialised into a tree of HE-like | |
82 | structs. Stores into %^H are chained onto the current leaf as a struct | |
83 | refcounted_he * with the key and the value. Deletes from %^H are saved | |
84 | with a value of PL_sv_placeholder. The state of %^H at any point can be | |
85 | turned back into a regular HV by walking back up the tree from that point's | |
06e0342d | 86 | leaf, ignoring any key you've already seen (placeholder or not), storing |
b3ca2e83 NC |
87 | the rest into the HV structure, then removing the placeholders. Hence |
88 | memory is only used to store the %^H deltas from the enclosing COP, rather | |
89 | than the entire %^H on each COP. | |
90 | ||
91 | To cause actions on %^H to write out the serialisation records, it has | |
92 | magic type 'H'. This magic (itself) does nothing, but its presence causes | |
93 | the values to gain magic type 'h', which has entries for set and clear. | |
c28fe1ec | 94 | C<Perl_magic_sethint> updates C<PL_compiling.cop_hints_hash> with a store |
34795b44 | 95 | record, with deletes written by C<Perl_magic_clearhint>. C<SAVEHINTS> |
c28fe1ec NC |
96 | saves the current C<PL_compiling.cop_hints_hash> on the save stack, so that |
97 | it will be correctly restored when any inner compiling scope is exited. | |
b3ca2e83 NC |
98 | */ |
99 | ||
79072805 | 100 | #include "EXTERN.h" |
864dbfa3 | 101 | #define PERL_IN_OP_C |
79072805 | 102 | #include "perl.h" |
77ca0c92 | 103 | #include "keywords.h" |
79072805 | 104 | |
a07e034d | 105 | #define CALL_PEEP(o) CALL_FPTR(PL_peepp)(aTHX_ o) |
f37b8c3f | 106 | #define CALL_OPFREEHOOK(o) if (PL_opfreehook) CALL_FPTR(PL_opfreehook)(aTHX_ o) |
a2efc822 | 107 | |
238a4c30 NIS |
108 | #if defined(PL_OP_SLAB_ALLOC) |
109 | ||
f1fac472 NC |
110 | #ifdef PERL_DEBUG_READONLY_OPS |
111 | # define PERL_SLAB_SIZE 4096 | |
112 | # include <sys/mman.h> | |
113 | #endif | |
114 | ||
238a4c30 NIS |
115 | #ifndef PERL_SLAB_SIZE |
116 | #define PERL_SLAB_SIZE 2048 | |
117 | #endif | |
118 | ||
c7e45529 | 119 | void * |
e91d68d5 | 120 | Perl_Slab_Alloc(pTHX_ size_t sz) |
1c846c1f | 121 | { |
5186cc12 | 122 | dVAR; |
5a8e194f NIS |
123 | /* |
124 | * To make incrementing use count easy PL_OpSlab is an I32 * | |
125 | * To make inserting the link to slab PL_OpPtr is I32 ** | |
126 | * So compute size in units of sizeof(I32 *) as that is how Pl_OpPtr increments | |
127 | * Add an overhead for pointer to slab and round up as a number of pointers | |
128 | */ | |
129 | sz = (sz + 2*sizeof(I32 *) -1)/sizeof(I32 *); | |
238a4c30 | 130 | if ((PL_OpSpace -= sz) < 0) { |
f1fac472 NC |
131 | #ifdef PERL_DEBUG_READONLY_OPS |
132 | /* We need to allocate chunk by chunk so that we can control the VM | |
133 | mapping */ | |
5186cc12 | 134 | PL_OpPtr = (I32**) mmap(0, PERL_SLAB_SIZE*sizeof(I32*), PROT_READ|PROT_WRITE, |
f1fac472 NC |
135 | MAP_ANON|MAP_PRIVATE, -1, 0); |
136 | ||
137 | DEBUG_m(PerlIO_printf(Perl_debug_log, "mapped %lu at %p\n", | |
138 | (unsigned long) PERL_SLAB_SIZE*sizeof(I32*), | |
139 | PL_OpPtr)); | |
140 | if(PL_OpPtr == MAP_FAILED) { | |
141 | perror("mmap failed"); | |
142 | abort(); | |
143 | } | |
144 | #else | |
277e868c NC |
145 | |
146 | PL_OpPtr = (I32 **) PerlMemShared_calloc(PERL_SLAB_SIZE,sizeof(I32*)); | |
f1fac472 | 147 | #endif |
083fcd59 | 148 | if (!PL_OpPtr) { |
238a4c30 NIS |
149 | return NULL; |
150 | } | |
5a8e194f NIS |
151 | /* We reserve the 0'th I32 sized chunk as a use count */ |
152 | PL_OpSlab = (I32 *) PL_OpPtr; | |
153 | /* Reduce size by the use count word, and by the size we need. | |
154 | * Latter is to mimic the '-=' in the if() above | |
155 | */ | |
156 | PL_OpSpace = PERL_SLAB_SIZE - (sizeof(I32)+sizeof(I32 **)-1)/sizeof(I32 **) - sz; | |
238a4c30 NIS |
157 | /* Allocation pointer starts at the top. |
158 | Theory: because we build leaves before trunk allocating at end | |
159 | means that at run time access is cache friendly upward | |
160 | */ | |
5a8e194f | 161 | PL_OpPtr += PERL_SLAB_SIZE; |
f1fac472 NC |
162 | |
163 | #ifdef PERL_DEBUG_READONLY_OPS | |
164 | /* We remember this slab. */ | |
165 | /* This implementation isn't efficient, but it is simple. */ | |
5186cc12 | 166 | PL_slabs = (I32**) realloc(PL_slabs, sizeof(I32**) * (PL_slab_count + 1)); |
f1fac472 NC |
167 | PL_slabs[PL_slab_count++] = PL_OpSlab; |
168 | DEBUG_m(PerlIO_printf(Perl_debug_log, "Allocate %p\n", PL_OpSlab)); | |
169 | #endif | |
238a4c30 NIS |
170 | } |
171 | assert( PL_OpSpace >= 0 ); | |
172 | /* Move the allocation pointer down */ | |
173 | PL_OpPtr -= sz; | |
5a8e194f | 174 | assert( PL_OpPtr > (I32 **) PL_OpSlab ); |
238a4c30 NIS |
175 | *PL_OpPtr = PL_OpSlab; /* Note which slab it belongs to */ |
176 | (*PL_OpSlab)++; /* Increment use count of slab */ | |
5a8e194f | 177 | assert( PL_OpPtr+sz <= ((I32 **) PL_OpSlab + PERL_SLAB_SIZE) ); |
238a4c30 NIS |
178 | assert( *PL_OpSlab > 0 ); |
179 | return (void *)(PL_OpPtr + 1); | |
180 | } | |
181 | ||
f1fac472 NC |
182 | #ifdef PERL_DEBUG_READONLY_OPS |
183 | void | |
184 | Perl_pending_Slabs_to_ro(pTHX) { | |
185 | /* Turn all the allocated op slabs read only. */ | |
186 | U32 count = PL_slab_count; | |
187 | I32 **const slabs = PL_slabs; | |
188 | ||
189 | /* Reset the array of pending OP slabs, as we're about to turn this lot | |
190 | read only. Also, do it ahead of the loop in case the warn triggers, | |
191 | and a warn handler has an eval */ | |
192 | ||
f1fac472 NC |
193 | PL_slabs = NULL; |
194 | PL_slab_count = 0; | |
195 | ||
196 | /* Force a new slab for any further allocation. */ | |
197 | PL_OpSpace = 0; | |
198 | ||
199 | while (count--) { | |
5892a4d4 | 200 | void *const start = slabs[count]; |
f1fac472 NC |
201 | const size_t size = PERL_SLAB_SIZE* sizeof(I32*); |
202 | if(mprotect(start, size, PROT_READ)) { | |
203 | Perl_warn(aTHX_ "mprotect for %p %lu failed with %d", | |
204 | start, (unsigned long) size, errno); | |
205 | } | |
206 | } | |
5892a4d4 NC |
207 | |
208 | free(slabs); | |
f1fac472 NC |
209 | } |
210 | ||
211 | STATIC void | |
212 | S_Slab_to_rw(pTHX_ void *op) | |
213 | { | |
214 | I32 * const * const ptr = (I32 **) op; | |
215 | I32 * const slab = ptr[-1]; | |
7918f24d NC |
216 | |
217 | PERL_ARGS_ASSERT_SLAB_TO_RW; | |
218 | ||
f1fac472 NC |
219 | assert( ptr-1 > (I32 **) slab ); |
220 | assert( ptr < ( (I32 **) slab + PERL_SLAB_SIZE) ); | |
221 | assert( *slab > 0 ); | |
222 | if(mprotect(slab, PERL_SLAB_SIZE*sizeof(I32*), PROT_READ|PROT_WRITE)) { | |
223 | Perl_warn(aTHX_ "mprotect RW for %p %lu failed with %d", | |
224 | slab, (unsigned long) PERL_SLAB_SIZE*sizeof(I32*), errno); | |
225 | } | |
226 | } | |
fc97af9c NC |
227 | |
228 | OP * | |
229 | Perl_op_refcnt_inc(pTHX_ OP *o) | |
230 | { | |
231 | if(o) { | |
232 | Slab_to_rw(o); | |
233 | ++o->op_targ; | |
234 | } | |
235 | return o; | |
236 | ||
237 | } | |
238 | ||
239 | PADOFFSET | |
240 | Perl_op_refcnt_dec(pTHX_ OP *o) | |
241 | { | |
7918f24d | 242 | PERL_ARGS_ASSERT_OP_REFCNT_DEC; |
fc97af9c NC |
243 | Slab_to_rw(o); |
244 | return --o->op_targ; | |
245 | } | |
f1fac472 NC |
246 | #else |
247 | # define Slab_to_rw(op) | |
248 | #endif | |
249 | ||
c7e45529 AE |
250 | void |
251 | Perl_Slab_Free(pTHX_ void *op) | |
238a4c30 | 252 | { |
551405c4 | 253 | I32 * const * const ptr = (I32 **) op; |
aec46f14 | 254 | I32 * const slab = ptr[-1]; |
7918f24d | 255 | PERL_ARGS_ASSERT_SLAB_FREE; |
5a8e194f NIS |
256 | assert( ptr-1 > (I32 **) slab ); |
257 | assert( ptr < ( (I32 **) slab + PERL_SLAB_SIZE) ); | |
238a4c30 | 258 | assert( *slab > 0 ); |
f1fac472 | 259 | Slab_to_rw(op); |
238a4c30 | 260 | if (--(*slab) == 0) { |
7e4e8c89 NC |
261 | # ifdef NETWARE |
262 | # define PerlMemShared PerlMem | |
263 | # endif | |
083fcd59 | 264 | |
f1fac472 | 265 | #ifdef PERL_DEBUG_READONLY_OPS |
782a40f1 | 266 | U32 count = PL_slab_count; |
f1fac472 | 267 | /* Need to remove this slab from our list of slabs */ |
782a40f1 | 268 | if (count) { |
f1fac472 NC |
269 | while (count--) { |
270 | if (PL_slabs[count] == slab) { | |
5186cc12 | 271 | dVAR; |
f1fac472 NC |
272 | /* Found it. Move the entry at the end to overwrite it. */ |
273 | DEBUG_m(PerlIO_printf(Perl_debug_log, | |
274 | "Deallocate %p by moving %p from %lu to %lu\n", | |
275 | PL_OpSlab, | |
276 | PL_slabs[PL_slab_count - 1], | |
277 | PL_slab_count, count)); | |
278 | PL_slabs[count] = PL_slabs[--PL_slab_count]; | |
279 | /* Could realloc smaller at this point, but probably not | |
280 | worth it. */ | |
fc97af9c NC |
281 | if(munmap(slab, PERL_SLAB_SIZE*sizeof(I32*))) { |
282 | perror("munmap failed"); | |
283 | abort(); | |
284 | } | |
285 | break; | |
f1fac472 | 286 | } |
f1fac472 NC |
287 | } |
288 | } | |
289 | #else | |
083fcd59 | 290 | PerlMemShared_free(slab); |
f1fac472 | 291 | #endif |
238a4c30 NIS |
292 | if (slab == PL_OpSlab) { |
293 | PL_OpSpace = 0; | |
294 | } | |
295 | } | |
b7dc083c | 296 | } |
b7dc083c | 297 | #endif |
e50aee73 | 298 | /* |
ce6f1cbc | 299 | * In the following definition, the ", (OP*)0" is just to make the compiler |
a5f75d66 | 300 | * think the expression is of the right type: croak actually does a Siglongjmp. |
e50aee73 | 301 | */ |
11343788 | 302 | #define CHECKOP(type,o) \ |
ce6f1cbc | 303 | ((PL_op_mask && PL_op_mask[type]) \ |
5dc0d613 | 304 | ? ( op_free((OP*)o), \ |
cb77fdf0 | 305 | Perl_croak(aTHX_ "'%s' trapped by operation mask", PL_op_desc[type]), \ |
ce6f1cbc | 306 | (OP*)0 ) \ |
fc0dc3b3 | 307 | : CALL_FPTR(PL_check[type])(aTHX_ (OP*)o)) |
e50aee73 | 308 | |
e6438c1a | 309 | #define RETURN_UNLIMITED_NUMBER (PERL_INT_MAX / 2) |
c53d7c7d | 310 | |
8b6b16e7 | 311 | STATIC const char* |
cea2e8a9 | 312 | S_gv_ename(pTHX_ GV *gv) |
4633a7c4 | 313 | { |
46c461b5 | 314 | SV* const tmpsv = sv_newmortal(); |
7918f24d NC |
315 | |
316 | PERL_ARGS_ASSERT_GV_ENAME; | |
317 | ||
bd61b366 | 318 | gv_efullname3(tmpsv, gv, NULL); |
8b6b16e7 | 319 | return SvPV_nolen_const(tmpsv); |
4633a7c4 LW |
320 | } |
321 | ||
76e3520e | 322 | STATIC OP * |
cea2e8a9 | 323 | S_no_fh_allowed(pTHX_ OP *o) |
79072805 | 324 | { |
7918f24d NC |
325 | PERL_ARGS_ASSERT_NO_FH_ALLOWED; |
326 | ||
cea2e8a9 | 327 | yyerror(Perl_form(aTHX_ "Missing comma after first argument to %s function", |
53e06cf0 | 328 | OP_DESC(o))); |
11343788 | 329 | return o; |
79072805 LW |
330 | } |
331 | ||
76e3520e | 332 | STATIC OP * |
bfed75c6 | 333 | S_too_few_arguments(pTHX_ OP *o, const char *name) |
79072805 | 334 | { |
7918f24d NC |
335 | PERL_ARGS_ASSERT_TOO_FEW_ARGUMENTS; |
336 | ||
cea2e8a9 | 337 | yyerror(Perl_form(aTHX_ "Not enough arguments for %s", name)); |
11343788 | 338 | return o; |
79072805 LW |
339 | } |
340 | ||
76e3520e | 341 | STATIC OP * |
bfed75c6 | 342 | S_too_many_arguments(pTHX_ OP *o, const char *name) |
79072805 | 343 | { |
7918f24d NC |
344 | PERL_ARGS_ASSERT_TOO_MANY_ARGUMENTS; |
345 | ||
cea2e8a9 | 346 | yyerror(Perl_form(aTHX_ "Too many arguments for %s", name)); |
11343788 | 347 | return o; |
79072805 LW |
348 | } |
349 | ||
76e3520e | 350 | STATIC void |
6867be6d | 351 | S_bad_type(pTHX_ I32 n, const char *t, const char *name, const OP *kid) |
8990e307 | 352 | { |
7918f24d NC |
353 | PERL_ARGS_ASSERT_BAD_TYPE; |
354 | ||
cea2e8a9 | 355 | yyerror(Perl_form(aTHX_ "Type of arg %d to %s must be %s (not %s)", |
53e06cf0 | 356 | (int)n, name, t, OP_DESC(kid))); |
8990e307 LW |
357 | } |
358 | ||
7a52d87a | 359 | STATIC void |
6867be6d | 360 | S_no_bareword_allowed(pTHX_ const OP *o) |
7a52d87a | 361 | { |
7918f24d NC |
362 | PERL_ARGS_ASSERT_NO_BAREWORD_ALLOWED; |
363 | ||
eb8433b7 NC |
364 | if (PL_madskills) |
365 | return; /* various ok barewords are hidden in extra OP_NULL */ | |
5a844595 | 366 | qerror(Perl_mess(aTHX_ |
35c1215d | 367 | "Bareword \"%"SVf"\" not allowed while \"strict subs\" in use", |
be2597df | 368 | SVfARG(cSVOPo_sv))); |
7a52d87a GS |
369 | } |
370 | ||
79072805 LW |
371 | /* "register" allocation */ |
372 | ||
373 | PADOFFSET | |
262cbcdb | 374 | Perl_allocmy(pTHX_ const char *const name) |
93a17b20 | 375 | { |
97aff369 | 376 | dVAR; |
a0d0e21e | 377 | PADOFFSET off; |
12bd6ede | 378 | const bool is_our = (PL_parser->in_my == KEY_our); |
a0d0e21e | 379 | |
7918f24d NC |
380 | PERL_ARGS_ASSERT_ALLOCMY; |
381 | ||
59f00321 | 382 | /* complain about "my $<special_var>" etc etc */ |
6b58708b | 383 | if (*name && |
3edf23ff | 384 | !(is_our || |
155aba94 | 385 | isALPHA(name[1]) || |
39e02b42 | 386 | (USE_UTF8_IN_NAMES && UTF8_IS_START(name[1])) || |
6b58708b | 387 | (name[1] == '_' && (*name == '$' || name[2])))) |
834a4ddd | 388 | { |
6b58708b | 389 | /* name[2] is true if strlen(name) > 2 */ |
c4d0567e | 390 | if (!isPRINT(name[1]) || strchr("\t\n\r\f", name[1])) { |
aab6a793 NC |
391 | yyerror(Perl_form(aTHX_ "Can't use global %c^%c%s in \"%s\"", |
392 | name[0], toCTRL(name[1]), name + 2, | |
393 | PL_parser->in_my == KEY_state ? "state" : "my")); | |
d1544d85 | 394 | } else { |
aab6a793 NC |
395 | yyerror(Perl_form(aTHX_ "Can't use global %s in \"%s\"",name, |
396 | PL_parser->in_my == KEY_state ? "state" : "my")); | |
46fc3d4c | 397 | } |
a0d0e21e | 398 | } |
748a9306 | 399 | |
dd2155a4 | 400 | /* check for duplicate declaration */ |
3edf23ff | 401 | pad_check_dup(name, is_our, (PL_curstash ? PL_curstash : PL_defstash)); |
33b8ce05 | 402 | |
dd2155a4 | 403 | /* allocate a spare slot and store the name in that slot */ |
93a17b20 | 404 | |
dd2155a4 | 405 | off = pad_add_name(name, |
12bd6ede | 406 | PL_parser->in_my_stash, |
3edf23ff | 407 | (is_our |
133706a6 RGS |
408 | /* $_ is always in main::, even with our */ |
409 | ? (PL_curstash && !strEQ(name,"$_") ? PL_curstash : PL_defstash) | |
5c284bb0 | 410 | : NULL |
dd2155a4 | 411 | ), |
952306ac | 412 | 0, /* not fake */ |
12bd6ede | 413 | PL_parser->in_my == KEY_state |
dd2155a4 | 414 | ); |
a74073ad DM |
415 | /* anon sub prototypes contains state vars should always be cloned, |
416 | * otherwise the state var would be shared between anon subs */ | |
417 | ||
418 | if (PL_parser->in_my == KEY_state && CvANON(PL_compcv)) | |
419 | CvCLONE_on(PL_compcv); | |
420 | ||
dd2155a4 | 421 | return off; |
79072805 LW |
422 | } |
423 | ||
d2c837a0 DM |
424 | /* free the body of an op without examining its contents. |
425 | * Always use this rather than FreeOp directly */ | |
426 | ||
4136a0f7 | 427 | static void |
d2c837a0 DM |
428 | S_op_destroy(pTHX_ OP *o) |
429 | { | |
430 | if (o->op_latefree) { | |
431 | o->op_latefreed = 1; | |
432 | return; | |
433 | } | |
434 | FreeOp(o); | |
435 | } | |
436 | ||
c4bd3ae5 NC |
437 | #ifdef USE_ITHREADS |
438 | # define forget_pmop(a,b) S_forget_pmop(aTHX_ a,b) | |
439 | #else | |
440 | # define forget_pmop(a,b) S_forget_pmop(aTHX_ a) | |
441 | #endif | |
d2c837a0 | 442 | |
79072805 LW |
443 | /* Destructor */ |
444 | ||
445 | void | |
864dbfa3 | 446 | Perl_op_free(pTHX_ OP *o) |
79072805 | 447 | { |
27da23d5 | 448 | dVAR; |
acb36ea4 | 449 | OPCODE type; |
79072805 | 450 | |
85594c31 | 451 | if (!o) |
79072805 | 452 | return; |
670f3923 DM |
453 | if (o->op_latefreed) { |
454 | if (o->op_latefree) | |
455 | return; | |
456 | goto do_free; | |
457 | } | |
79072805 | 458 | |
67566ccd | 459 | type = o->op_type; |
7934575e | 460 | if (o->op_private & OPpREFCOUNTED) { |
67566ccd | 461 | switch (type) { |
7934575e GS |
462 | case OP_LEAVESUB: |
463 | case OP_LEAVESUBLV: | |
464 | case OP_LEAVEEVAL: | |
465 | case OP_LEAVE: | |
466 | case OP_SCOPE: | |
467 | case OP_LEAVEWRITE: | |
67566ccd AL |
468 | { |
469 | PADOFFSET refcnt; | |
7934575e | 470 | OP_REFCNT_LOCK; |
4026c95a | 471 | refcnt = OpREFCNT_dec(o); |
7934575e | 472 | OP_REFCNT_UNLOCK; |
bfd0ff22 NC |
473 | if (refcnt) { |
474 | /* Need to find and remove any pattern match ops from the list | |
475 | we maintain for reset(). */ | |
476 | find_and_forget_pmops(o); | |
4026c95a | 477 | return; |
67566ccd | 478 | } |
bfd0ff22 | 479 | } |
7934575e GS |
480 | break; |
481 | default: | |
482 | break; | |
483 | } | |
484 | } | |
485 | ||
f37b8c3f VP |
486 | /* Call the op_free hook if it has been set. Do it now so that it's called |
487 | * at the right time for refcounted ops, but still before all of the kids | |
488 | * are freed. */ | |
489 | CALL_OPFREEHOOK(o); | |
490 | ||
11343788 | 491 | if (o->op_flags & OPf_KIDS) { |
6867be6d | 492 | register OP *kid, *nextkid; |
11343788 | 493 | for (kid = cUNOPo->op_first; kid; kid = nextkid) { |
85e6fe83 | 494 | nextkid = kid->op_sibling; /* Get before next freeing kid */ |
79072805 | 495 | op_free(kid); |
85e6fe83 | 496 | } |
79072805 | 497 | } |
acb36ea4 | 498 | |
fc97af9c NC |
499 | #ifdef PERL_DEBUG_READONLY_OPS |
500 | Slab_to_rw(o); | |
501 | #endif | |
502 | ||
acb36ea4 GS |
503 | /* COP* is not cleared by op_clear() so that we may track line |
504 | * numbers etc even after null() */ | |
cc93af5f RGS |
505 | if (type == OP_NEXTSTATE || type == OP_DBSTATE |
506 | || (type == OP_NULL /* the COP might have been null'ed */ | |
507 | && ((OPCODE)o->op_targ == OP_NEXTSTATE | |
508 | || (OPCODE)o->op_targ == OP_DBSTATE))) { | |
acb36ea4 | 509 | cop_free((COP*)o); |
3235b7a3 | 510 | } |
acb36ea4 | 511 | |
c53f1caa RU |
512 | if (type == OP_NULL) |
513 | type = (OPCODE)o->op_targ; | |
514 | ||
acb36ea4 | 515 | op_clear(o); |
670f3923 DM |
516 | if (o->op_latefree) { |
517 | o->op_latefreed = 1; | |
518 | return; | |
519 | } | |
520 | do_free: | |
238a4c30 | 521 | FreeOp(o); |
4d494880 DM |
522 | #ifdef DEBUG_LEAKING_SCALARS |
523 | if (PL_op == o) | |
5f66b61c | 524 | PL_op = NULL; |
4d494880 | 525 | #endif |
acb36ea4 | 526 | } |
79072805 | 527 | |
93c66552 DM |
528 | void |
529 | Perl_op_clear(pTHX_ OP *o) | |
acb36ea4 | 530 | { |
13137afc | 531 | |
27da23d5 | 532 | dVAR; |
7918f24d NC |
533 | |
534 | PERL_ARGS_ASSERT_OP_CLEAR; | |
535 | ||
eb8433b7 NC |
536 | #ifdef PERL_MAD |
537 | /* if (o->op_madprop && o->op_madprop->mad_next) | |
538 | abort(); */ | |
3cc8d589 NC |
539 | /* FIXME for MAD - if I uncomment these two lines t/op/pack.t fails with |
540 | "modification of a read only value" for a reason I can't fathom why. | |
541 | It's the "" stringification of $_, where $_ was set to '' in a foreach | |
04a4d38e NC |
542 | loop, but it defies simplification into a small test case. |
543 | However, commenting them out has caused ext/List/Util/t/weak.t to fail | |
544 | the last test. */ | |
3cc8d589 NC |
545 | /* |
546 | mad_free(o->op_madprop); | |
547 | o->op_madprop = 0; | |
548 | */ | |
eb8433b7 NC |
549 | #endif |
550 | ||
551 | retry: | |
11343788 | 552 | switch (o->op_type) { |
acb36ea4 | 553 | case OP_NULL: /* Was holding old type, if any. */ |
eb8433b7 | 554 | if (PL_madskills && o->op_targ != OP_NULL) { |
61a59f30 | 555 | o->op_type = (Optype)o->op_targ; |
eb8433b7 NC |
556 | o->op_targ = 0; |
557 | goto retry; | |
558 | } | |
acb36ea4 | 559 | case OP_ENTEREVAL: /* Was holding hints. */ |
acb36ea4 | 560 | o->op_targ = 0; |
a0d0e21e | 561 | break; |
a6006777 | 562 | default: |
ac4c12e7 | 563 | if (!(o->op_flags & OPf_REF) |
0b94c7bb | 564 | || (PL_check[o->op_type] != MEMBER_TO_FPTR(Perl_ck_ftst))) |
a6006777 | 565 | break; |
566 | /* FALL THROUGH */ | |
463ee0b2 | 567 | case OP_GVSV: |
79072805 | 568 | case OP_GV: |
a6006777 | 569 | case OP_AELEMFAST: |
6a077020 DM |
570 | if (! (o->op_type == OP_AELEMFAST && o->op_flags & OPf_SPECIAL)) { |
571 | /* not an OP_PADAV replacement */ | |
350de78d | 572 | #ifdef USE_ITHREADS |
6a077020 DM |
573 | if (cPADOPo->op_padix > 0) { |
574 | /* No GvIN_PAD_off(cGVOPo_gv) here, because other references | |
575 | * may still exist on the pad */ | |
576 | pad_swipe(cPADOPo->op_padix, TRUE); | |
577 | cPADOPo->op_padix = 0; | |
578 | } | |
350de78d | 579 | #else |
6a077020 | 580 | SvREFCNT_dec(cSVOPo->op_sv); |
a0714e2c | 581 | cSVOPo->op_sv = NULL; |
350de78d | 582 | #endif |
6a077020 | 583 | } |
79072805 | 584 | break; |
a1ae71d2 | 585 | case OP_METHOD_NAMED: |
79072805 | 586 | case OP_CONST: |
996c9baa | 587 | case OP_HINTSEVAL: |
11343788 | 588 | SvREFCNT_dec(cSVOPo->op_sv); |
a0714e2c | 589 | cSVOPo->op_sv = NULL; |
3b1c21fa AB |
590 | #ifdef USE_ITHREADS |
591 | /** Bug #15654 | |
592 | Even if op_clear does a pad_free for the target of the op, | |
6a077020 | 593 | pad_free doesn't actually remove the sv that exists in the pad; |
3b1c21fa AB |
594 | instead it lives on. This results in that it could be reused as |
595 | a target later on when the pad was reallocated. | |
596 | **/ | |
597 | if(o->op_targ) { | |
598 | pad_swipe(o->op_targ,1); | |
599 | o->op_targ = 0; | |
600 | } | |
601 | #endif | |
79072805 | 602 | break; |
748a9306 LW |
603 | case OP_GOTO: |
604 | case OP_NEXT: | |
605 | case OP_LAST: | |
606 | case OP_REDO: | |
11343788 | 607 | if (o->op_flags & (OPf_SPECIAL|OPf_STACKED|OPf_KIDS)) |
748a9306 LW |
608 | break; |
609 | /* FALL THROUGH */ | |
a0d0e21e | 610 | case OP_TRANS: |
acb36ea4 | 611 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { |
043e41b8 DM |
612 | #ifdef USE_ITHREADS |
613 | if (cPADOPo->op_padix > 0) { | |
614 | pad_swipe(cPADOPo->op_padix, TRUE); | |
615 | cPADOPo->op_padix = 0; | |
616 | } | |
617 | #else | |
a0ed51b3 | 618 | SvREFCNT_dec(cSVOPo->op_sv); |
a0714e2c | 619 | cSVOPo->op_sv = NULL; |
043e41b8 | 620 | #endif |
acb36ea4 GS |
621 | } |
622 | else { | |
ea71c68d | 623 | PerlMemShared_free(cPVOPo->op_pv); |
bd61b366 | 624 | cPVOPo->op_pv = NULL; |
acb36ea4 | 625 | } |
a0d0e21e LW |
626 | break; |
627 | case OP_SUBST: | |
20e98b0f | 628 | op_free(cPMOPo->op_pmreplrootu.op_pmreplroot); |
971a9dd3 | 629 | goto clear_pmop; |
748a9306 | 630 | case OP_PUSHRE: |
971a9dd3 | 631 | #ifdef USE_ITHREADS |
20e98b0f | 632 | if (cPMOPo->op_pmreplrootu.op_pmtargetoff) { |
dd2155a4 DM |
633 | /* No GvIN_PAD_off here, because other references may still |
634 | * exist on the pad */ | |
20e98b0f | 635 | pad_swipe(cPMOPo->op_pmreplrootu.op_pmtargetoff, TRUE); |
971a9dd3 GS |
636 | } |
637 | #else | |
ad64d0ec | 638 | SvREFCNT_dec(MUTABLE_SV(cPMOPo->op_pmreplrootu.op_pmtargetgv)); |
971a9dd3 GS |
639 | #endif |
640 | /* FALL THROUGH */ | |
a0d0e21e | 641 | case OP_MATCH: |
8782bef2 | 642 | case OP_QR: |
971a9dd3 | 643 | clear_pmop: |
c2b1997a | 644 | forget_pmop(cPMOPo, 1); |
20e98b0f | 645 | cPMOPo->op_pmreplrootu.op_pmreplroot = NULL; |
9cddf794 NC |
646 | /* we use the same protection as the "SAFE" version of the PM_ macros |
647 | * here since sv_clean_all might release some PMOPs | |
5f8cb046 DM |
648 | * after PL_regex_padav has been cleared |
649 | * and the clearing of PL_regex_padav needs to | |
650 | * happen before sv_clean_all | |
651 | */ | |
13137afc AB |
652 | #ifdef USE_ITHREADS |
653 | if(PL_regex_pad) { /* We could be in destruction */ | |
402d2eb1 | 654 | const IV offset = (cPMOPo)->op_pmoffset; |
9cddf794 | 655 | ReREFCNT_dec(PM_GETRE(cPMOPo)); |
402d2eb1 NC |
656 | PL_regex_pad[offset] = &PL_sv_undef; |
657 | sv_catpvn_nomg(PL_regex_pad[0], (const char *)&offset, | |
658 | sizeof(offset)); | |
13137afc | 659 | } |
9cddf794 NC |
660 | #else |
661 | ReREFCNT_dec(PM_GETRE(cPMOPo)); | |
662 | PM_SETRE(cPMOPo, NULL); | |
1eb1540c | 663 | #endif |
13137afc | 664 | |
a0d0e21e | 665 | break; |
79072805 LW |
666 | } |
667 | ||
743e66e6 | 668 | if (o->op_targ > 0) { |
11343788 | 669 | pad_free(o->op_targ); |
743e66e6 GS |
670 | o->op_targ = 0; |
671 | } | |
79072805 LW |
672 | } |
673 | ||
76e3520e | 674 | STATIC void |
3eb57f73 HS |
675 | S_cop_free(pTHX_ COP* cop) |
676 | { | |
7918f24d NC |
677 | PERL_ARGS_ASSERT_COP_FREE; |
678 | ||
05ec9bb3 NIS |
679 | CopFILE_free(cop); |
680 | CopSTASH_free(cop); | |
0453d815 | 681 | if (! specialWARN(cop->cop_warnings)) |
72dc9ed5 | 682 | PerlMemShared_free(cop->cop_warnings); |
c28fe1ec | 683 | Perl_refcounted_he_free(aTHX_ cop->cop_hints_hash); |
3eb57f73 HS |
684 | } |
685 | ||
c2b1997a | 686 | STATIC void |
c4bd3ae5 NC |
687 | S_forget_pmop(pTHX_ PMOP *const o |
688 | #ifdef USE_ITHREADS | |
689 | , U32 flags | |
690 | #endif | |
691 | ) | |
c2b1997a NC |
692 | { |
693 | HV * const pmstash = PmopSTASH(o); | |
7918f24d NC |
694 | |
695 | PERL_ARGS_ASSERT_FORGET_PMOP; | |
696 | ||
c2b1997a | 697 | if (pmstash && !SvIS_FREED(pmstash)) { |
ad64d0ec | 698 | MAGIC * const mg = mg_find((const SV *)pmstash, PERL_MAGIC_symtab); |
c2b1997a NC |
699 | if (mg) { |
700 | PMOP **const array = (PMOP**) mg->mg_ptr; | |
701 | U32 count = mg->mg_len / sizeof(PMOP**); | |
702 | U32 i = count; | |
703 | ||
704 | while (i--) { | |
705 | if (array[i] == o) { | |
706 | /* Found it. Move the entry at the end to overwrite it. */ | |
707 | array[i] = array[--count]; | |
708 | mg->mg_len = count * sizeof(PMOP**); | |
709 | /* Could realloc smaller at this point always, but probably | |
710 | not worth it. Probably worth free()ing if we're the | |
711 | last. */ | |
712 | if(!count) { | |
713 | Safefree(mg->mg_ptr); | |
714 | mg->mg_ptr = NULL; | |
715 | } | |
716 | break; | |
717 | } | |
718 | } | |
719 | } | |
720 | } | |
1cdf7faf NC |
721 | if (PL_curpm == o) |
722 | PL_curpm = NULL; | |
c4bd3ae5 | 723 | #ifdef USE_ITHREADS |
c2b1997a NC |
724 | if (flags) |
725 | PmopSTASH_free(o); | |
c4bd3ae5 | 726 | #endif |
c2b1997a NC |
727 | } |
728 | ||
bfd0ff22 NC |
729 | STATIC void |
730 | S_find_and_forget_pmops(pTHX_ OP *o) | |
731 | { | |
7918f24d NC |
732 | PERL_ARGS_ASSERT_FIND_AND_FORGET_PMOPS; |
733 | ||
bfd0ff22 NC |
734 | if (o->op_flags & OPf_KIDS) { |
735 | OP *kid = cUNOPo->op_first; | |
736 | while (kid) { | |
737 | switch (kid->op_type) { | |
738 | case OP_SUBST: | |
739 | case OP_PUSHRE: | |
740 | case OP_MATCH: | |
741 | case OP_QR: | |
742 | forget_pmop((PMOP*)kid, 0); | |
743 | } | |
744 | find_and_forget_pmops(kid); | |
745 | kid = kid->op_sibling; | |
746 | } | |
747 | } | |
748 | } | |
749 | ||
93c66552 DM |
750 | void |
751 | Perl_op_null(pTHX_ OP *o) | |
8990e307 | 752 | { |
27da23d5 | 753 | dVAR; |
7918f24d NC |
754 | |
755 | PERL_ARGS_ASSERT_OP_NULL; | |
756 | ||
acb36ea4 GS |
757 | if (o->op_type == OP_NULL) |
758 | return; | |
eb8433b7 NC |
759 | if (!PL_madskills) |
760 | op_clear(o); | |
11343788 MB |
761 | o->op_targ = o->op_type; |
762 | o->op_type = OP_NULL; | |
22c35a8c | 763 | o->op_ppaddr = PL_ppaddr[OP_NULL]; |
8990e307 LW |
764 | } |
765 | ||
4026c95a SH |
766 | void |
767 | Perl_op_refcnt_lock(pTHX) | |
768 | { | |
27da23d5 | 769 | dVAR; |
96a5add6 | 770 | PERL_UNUSED_CONTEXT; |
4026c95a SH |
771 | OP_REFCNT_LOCK; |
772 | } | |
773 | ||
774 | void | |
775 | Perl_op_refcnt_unlock(pTHX) | |
776 | { | |
27da23d5 | 777 | dVAR; |
96a5add6 | 778 | PERL_UNUSED_CONTEXT; |
4026c95a SH |
779 | OP_REFCNT_UNLOCK; |
780 | } | |
781 | ||
79072805 LW |
782 | /* Contextualizers */ |
783 | ||
463ee0b2 | 784 | #define LINKLIST(o) ((o)->op_next ? (o)->op_next : linklist((OP*)o)) |
79072805 | 785 | |
1f676739 | 786 | static OP * |
12e93c28 | 787 | S_linklist(pTHX_ OP *o) |
79072805 | 788 | { |
3edf23ff | 789 | OP *first; |
79072805 | 790 | |
7918f24d NC |
791 | PERL_ARGS_ASSERT_LINKLIST; |
792 | ||
11343788 MB |
793 | if (o->op_next) |
794 | return o->op_next; | |
79072805 LW |
795 | |
796 | /* establish postfix order */ | |
3edf23ff AL |
797 | first = cUNOPo->op_first; |
798 | if (first) { | |
6867be6d | 799 | register OP *kid; |
3edf23ff AL |
800 | o->op_next = LINKLIST(first); |
801 | kid = first; | |
802 | for (;;) { | |
803 | if (kid->op_sibling) { | |
79072805 | 804 | kid->op_next = LINKLIST(kid->op_sibling); |
3edf23ff AL |
805 | kid = kid->op_sibling; |
806 | } else { | |
11343788 | 807 | kid->op_next = o; |
3edf23ff AL |
808 | break; |
809 | } | |
79072805 LW |
810 | } |
811 | } | |
812 | else | |
11343788 | 813 | o->op_next = o; |
79072805 | 814 | |
11343788 | 815 | return o->op_next; |
79072805 LW |
816 | } |
817 | ||
1f676739 | 818 | static OP * |
2dd5337b | 819 | S_scalarkids(pTHX_ OP *o) |
79072805 | 820 | { |
11343788 | 821 | if (o && o->op_flags & OPf_KIDS) { |
bfed75c6 | 822 | OP *kid; |
11343788 | 823 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
824 | scalar(kid); |
825 | } | |
11343788 | 826 | return o; |
79072805 LW |
827 | } |
828 | ||
76e3520e | 829 | STATIC OP * |
cea2e8a9 | 830 | S_scalarboolean(pTHX_ OP *o) |
8990e307 | 831 | { |
97aff369 | 832 | dVAR; |
7918f24d NC |
833 | |
834 | PERL_ARGS_ASSERT_SCALARBOOLEAN; | |
835 | ||
d008e5eb | 836 | if (o->op_type == OP_SASSIGN && cBINOPo->op_first->op_type == OP_CONST) { |
d008e5eb | 837 | if (ckWARN(WARN_SYNTAX)) { |
6867be6d | 838 | const line_t oldline = CopLINE(PL_curcop); |
a0d0e21e | 839 | |
53a7735b DM |
840 | if (PL_parser && PL_parser->copline != NOLINE) |
841 | CopLINE_set(PL_curcop, PL_parser->copline); | |
9014280d | 842 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Found = in conditional, should be =="); |
57843af0 | 843 | CopLINE_set(PL_curcop, oldline); |
d008e5eb | 844 | } |
a0d0e21e | 845 | } |
11343788 | 846 | return scalar(o); |
8990e307 LW |
847 | } |
848 | ||
849 | OP * | |
864dbfa3 | 850 | Perl_scalar(pTHX_ OP *o) |
79072805 | 851 | { |
27da23d5 | 852 | dVAR; |
79072805 LW |
853 | OP *kid; |
854 | ||
a0d0e21e | 855 | /* assumes no premature commitment */ |
13765c85 DM |
856 | if (!o || (PL_parser && PL_parser->error_count) |
857 | || (o->op_flags & OPf_WANT) | |
5dc0d613 | 858 | || o->op_type == OP_RETURN) |
7e363e51 | 859 | { |
11343788 | 860 | return o; |
7e363e51 | 861 | } |
79072805 | 862 | |
5dc0d613 | 863 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_SCALAR; |
79072805 | 864 | |
11343788 | 865 | switch (o->op_type) { |
79072805 | 866 | case OP_REPEAT: |
11343788 | 867 | scalar(cBINOPo->op_first); |
8990e307 | 868 | break; |
79072805 LW |
869 | case OP_OR: |
870 | case OP_AND: | |
871 | case OP_COND_EXPR: | |
11343788 | 872 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
8990e307 | 873 | scalar(kid); |
79072805 | 874 | break; |
a0d0e21e | 875 | /* FALL THROUGH */ |
a6d8037e | 876 | case OP_SPLIT: |
79072805 | 877 | case OP_MATCH: |
8782bef2 | 878 | case OP_QR: |
79072805 LW |
879 | case OP_SUBST: |
880 | case OP_NULL: | |
8990e307 | 881 | default: |
11343788 MB |
882 | if (o->op_flags & OPf_KIDS) { |
883 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) | |
8990e307 LW |
884 | scalar(kid); |
885 | } | |
79072805 LW |
886 | break; |
887 | case OP_LEAVE: | |
888 | case OP_LEAVETRY: | |
5dc0d613 | 889 | kid = cLISTOPo->op_first; |
54310121 | 890 | scalar(kid); |
155aba94 | 891 | while ((kid = kid->op_sibling)) { |
54310121 | 892 | if (kid->op_sibling) |
893 | scalarvoid(kid); | |
894 | else | |
895 | scalar(kid); | |
896 | } | |
11206fdd | 897 | PL_curcop = &PL_compiling; |
54310121 | 898 | break; |
748a9306 | 899 | case OP_SCOPE: |
79072805 | 900 | case OP_LINESEQ: |
8990e307 | 901 | case OP_LIST: |
11343788 | 902 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
903 | if (kid->op_sibling) |
904 | scalarvoid(kid); | |
905 | else | |
906 | scalar(kid); | |
907 | } | |
11206fdd | 908 | PL_curcop = &PL_compiling; |
79072805 | 909 | break; |
a801c63c RGS |
910 | case OP_SORT: |
911 | if (ckWARN(WARN_VOID)) | |
9014280d | 912 | Perl_warner(aTHX_ packWARN(WARN_VOID), "Useless use of sort in scalar context"); |
553e7bb0 | 913 | break; |
79072805 | 914 | } |
11343788 | 915 | return o; |
79072805 LW |
916 | } |
917 | ||
918 | OP * | |
864dbfa3 | 919 | Perl_scalarvoid(pTHX_ OP *o) |
79072805 | 920 | { |
27da23d5 | 921 | dVAR; |
79072805 | 922 | OP *kid; |
c445ea15 | 923 | const char* useless = NULL; |
8990e307 | 924 | SV* sv; |
2ebea0a1 GS |
925 | U8 want; |
926 | ||
7918f24d NC |
927 | PERL_ARGS_ASSERT_SCALARVOID; |
928 | ||
eb8433b7 NC |
929 | /* trailing mad null ops don't count as "there" for void processing */ |
930 | if (PL_madskills && | |
931 | o->op_type != OP_NULL && | |
932 | o->op_sibling && | |
933 | o->op_sibling->op_type == OP_NULL) | |
934 | { | |
935 | OP *sib; | |
936 | for (sib = o->op_sibling; | |
937 | sib && sib->op_type == OP_NULL; | |
938 | sib = sib->op_sibling) ; | |
939 | ||
940 | if (!sib) | |
941 | return o; | |
942 | } | |
943 | ||
acb36ea4 | 944 | if (o->op_type == OP_NEXTSTATE |
acb36ea4 GS |
945 | || o->op_type == OP_DBSTATE |
946 | || (o->op_type == OP_NULL && (o->op_targ == OP_NEXTSTATE | |
acb36ea4 | 947 | || o->op_targ == OP_DBSTATE))) |
2ebea0a1 | 948 | PL_curcop = (COP*)o; /* for warning below */ |
79072805 | 949 | |
54310121 | 950 | /* assumes no premature commitment */ |
2ebea0a1 | 951 | want = o->op_flags & OPf_WANT; |
13765c85 DM |
952 | if ((want && want != OPf_WANT_SCALAR) |
953 | || (PL_parser && PL_parser->error_count) | |
5dc0d613 | 954 | || o->op_type == OP_RETURN) |
7e363e51 | 955 | { |
11343788 | 956 | return o; |
7e363e51 | 957 | } |
79072805 | 958 | |
b162f9ea | 959 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
960 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
961 | { | |
b162f9ea | 962 | return scalar(o); /* As if inside SASSIGN */ |
7e363e51 | 963 | } |
1c846c1f | 964 | |
5dc0d613 | 965 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_VOID; |
79072805 | 966 | |
11343788 | 967 | switch (o->op_type) { |
79072805 | 968 | default: |
22c35a8c | 969 | if (!(PL_opargs[o->op_type] & OA_FOLDCONST)) |
8990e307 | 970 | break; |
36477c24 | 971 | /* FALL THROUGH */ |
972 | case OP_REPEAT: | |
11343788 | 973 | if (o->op_flags & OPf_STACKED) |
8990e307 | 974 | break; |
5d82c453 GA |
975 | goto func_ops; |
976 | case OP_SUBSTR: | |
977 | if (o->op_private == 4) | |
978 | break; | |
8990e307 LW |
979 | /* FALL THROUGH */ |
980 | case OP_GVSV: | |
981 | case OP_WANTARRAY: | |
982 | case OP_GV: | |
74295f0b | 983 | case OP_SMARTMATCH: |
8990e307 LW |
984 | case OP_PADSV: |
985 | case OP_PADAV: | |
986 | case OP_PADHV: | |
987 | case OP_PADANY: | |
988 | case OP_AV2ARYLEN: | |
8990e307 | 989 | case OP_REF: |
a0d0e21e LW |
990 | case OP_REFGEN: |
991 | case OP_SREFGEN: | |
8990e307 LW |
992 | case OP_DEFINED: |
993 | case OP_HEX: | |
994 | case OP_OCT: | |
995 | case OP_LENGTH: | |
8990e307 LW |
996 | case OP_VEC: |
997 | case OP_INDEX: | |
998 | case OP_RINDEX: | |
999 | case OP_SPRINTF: | |
1000 | case OP_AELEM: | |
1001 | case OP_AELEMFAST: | |
1002 | case OP_ASLICE: | |
8990e307 LW |
1003 | case OP_HELEM: |
1004 | case OP_HSLICE: | |
1005 | case OP_UNPACK: | |
1006 | case OP_PACK: | |
8990e307 LW |
1007 | case OP_JOIN: |
1008 | case OP_LSLICE: | |
1009 | case OP_ANONLIST: | |
1010 | case OP_ANONHASH: | |
1011 | case OP_SORT: | |
1012 | case OP_REVERSE: | |
1013 | case OP_RANGE: | |
1014 | case OP_FLIP: | |
1015 | case OP_FLOP: | |
1016 | case OP_CALLER: | |
1017 | case OP_FILENO: | |
1018 | case OP_EOF: | |
1019 | case OP_TELL: | |
1020 | case OP_GETSOCKNAME: | |
1021 | case OP_GETPEERNAME: | |
1022 | case OP_READLINK: | |
1023 | case OP_TELLDIR: | |
1024 | case OP_GETPPID: | |
1025 | case OP_GETPGRP: | |
1026 | case OP_GETPRIORITY: | |
1027 | case OP_TIME: | |
1028 | case OP_TMS: | |
1029 | case OP_LOCALTIME: | |
1030 | case OP_GMTIME: | |
1031 | case OP_GHBYNAME: | |
1032 | case OP_GHBYADDR: | |
1033 | case OP_GHOSTENT: | |
1034 | case OP_GNBYNAME: | |
1035 | case OP_GNBYADDR: | |
1036 | case OP_GNETENT: | |
1037 | case OP_GPBYNAME: | |
1038 | case OP_GPBYNUMBER: | |
1039 | case OP_GPROTOENT: | |
1040 | case OP_GSBYNAME: | |
1041 | case OP_GSBYPORT: | |
1042 | case OP_GSERVENT: | |
1043 | case OP_GPWNAM: | |
1044 | case OP_GPWUID: | |
1045 | case OP_GGRNAM: | |
1046 | case OP_GGRGID: | |
1047 | case OP_GETLOGIN: | |
78e1b766 | 1048 | case OP_PROTOTYPE: |
5d82c453 | 1049 | func_ops: |
64aac5a9 | 1050 | if (!(o->op_private & (OPpLVAL_INTRO|OPpOUR_INTRO))) |
74295f0b | 1051 | /* Otherwise it's "Useless use of grep iterator" */ |
f5df4782 | 1052 | useless = OP_DESC(o); |
8990e307 LW |
1053 | break; |
1054 | ||
9f82cd5f YST |
1055 | case OP_NOT: |
1056 | kid = cUNOPo->op_first; | |
1057 | if (kid->op_type != OP_MATCH && kid->op_type != OP_SUBST && | |
1058 | kid->op_type != OP_TRANS) { | |
1059 | goto func_ops; | |
1060 | } | |
1061 | useless = "negative pattern binding (!~)"; | |
1062 | break; | |
1063 | ||
8990e307 LW |
1064 | case OP_RV2GV: |
1065 | case OP_RV2SV: | |
1066 | case OP_RV2AV: | |
1067 | case OP_RV2HV: | |
192587c2 | 1068 | if (!(o->op_private & (OPpLVAL_INTRO|OPpOUR_INTRO)) && |
11343788 | 1069 | (!o->op_sibling || o->op_sibling->op_type != OP_READLINE)) |
8990e307 LW |
1070 | useless = "a variable"; |
1071 | break; | |
79072805 LW |
1072 | |
1073 | case OP_CONST: | |
7766f137 | 1074 | sv = cSVOPo_sv; |
7a52d87a GS |
1075 | if (cSVOPo->op_private & OPpCONST_STRICT) |
1076 | no_bareword_allowed(o); | |
1077 | else { | |
d008e5eb | 1078 | if (ckWARN(WARN_VOID)) { |
fa01e093 RGS |
1079 | if (SvOK(sv)) { |
1080 | SV* msv = sv_2mortal(Perl_newSVpvf(aTHX_ | |
1081 | "a constant (%"SVf")", sv)); | |
1082 | useless = SvPV_nolen(msv); | |
1083 | } | |
1084 | else | |
1085 | useless = "a constant (undef)"; | |
2e0ae2d3 | 1086 | if (o->op_private & OPpCONST_ARYBASE) |
d4c19fe8 | 1087 | useless = NULL; |
e7fec78e | 1088 | /* don't warn on optimised away booleans, eg |
b5a930ec | 1089 | * use constant Foo, 5; Foo || print; */ |
e7fec78e | 1090 | if (cSVOPo->op_private & OPpCONST_SHORTCIRCUIT) |
d4c19fe8 | 1091 | useless = NULL; |
960b4253 MG |
1092 | /* the constants 0 and 1 are permitted as they are |
1093 | conventionally used as dummies in constructs like | |
1094 | 1 while some_condition_with_side_effects; */ | |
e7fec78e | 1095 | else if (SvNIOK(sv) && (SvNV(sv) == 0.0 || SvNV(sv) == 1.0)) |
d4c19fe8 | 1096 | useless = NULL; |
d008e5eb | 1097 | else if (SvPOK(sv)) { |
a52fe3ac A |
1098 | /* perl4's way of mixing documentation and code |
1099 | (before the invention of POD) was based on a | |
1100 | trick to mix nroff and perl code. The trick was | |
1101 | built upon these three nroff macros being used in | |
1102 | void context. The pink camel has the details in | |
1103 | the script wrapman near page 319. */ | |
6136c704 AL |
1104 | const char * const maybe_macro = SvPVX_const(sv); |
1105 | if (strnEQ(maybe_macro, "di", 2) || | |
1106 | strnEQ(maybe_macro, "ds", 2) || | |
1107 | strnEQ(maybe_macro, "ig", 2)) | |
d4c19fe8 | 1108 | useless = NULL; |
d008e5eb | 1109 | } |
8990e307 LW |
1110 | } |
1111 | } | |
93c66552 | 1112 | op_null(o); /* don't execute or even remember it */ |
79072805 LW |
1113 | break; |
1114 | ||
1115 | case OP_POSTINC: | |
11343788 | 1116 | o->op_type = OP_PREINC; /* pre-increment is faster */ |
22c35a8c | 1117 | o->op_ppaddr = PL_ppaddr[OP_PREINC]; |
79072805 LW |
1118 | break; |
1119 | ||
1120 | case OP_POSTDEC: | |
11343788 | 1121 | o->op_type = OP_PREDEC; /* pre-decrement is faster */ |
22c35a8c | 1122 | o->op_ppaddr = PL_ppaddr[OP_PREDEC]; |
79072805 LW |
1123 | break; |
1124 | ||
679d6c4e HS |
1125 | case OP_I_POSTINC: |
1126 | o->op_type = OP_I_PREINC; /* pre-increment is faster */ | |
1127 | o->op_ppaddr = PL_ppaddr[OP_I_PREINC]; | |
1128 | break; | |
1129 | ||
1130 | case OP_I_POSTDEC: | |
1131 | o->op_type = OP_I_PREDEC; /* pre-decrement is faster */ | |
1132 | o->op_ppaddr = PL_ppaddr[OP_I_PREDEC]; | |
1133 | break; | |
1134 | ||
79072805 LW |
1135 | case OP_OR: |
1136 | case OP_AND: | |
edbe35ea VP |
1137 | kid = cLOGOPo->op_first; |
1138 | if (kid->op_type == OP_NOT | |
1139 | && (kid->op_flags & OPf_KIDS) | |
1140 | && !PL_madskills) { | |
1141 | if (o->op_type == OP_AND) { | |
1142 | o->op_type = OP_OR; | |
1143 | o->op_ppaddr = PL_ppaddr[OP_OR]; | |
1144 | } else { | |
1145 | o->op_type = OP_AND; | |
1146 | o->op_ppaddr = PL_ppaddr[OP_AND]; | |
1147 | } | |
1148 | op_null(kid); | |
1149 | } | |
1150 | ||
c963b151 | 1151 | case OP_DOR: |
79072805 | 1152 | case OP_COND_EXPR: |
0d863452 RH |
1153 | case OP_ENTERGIVEN: |
1154 | case OP_ENTERWHEN: | |
11343788 | 1155 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
1156 | scalarvoid(kid); |
1157 | break; | |
5aabfad6 | 1158 | |
a0d0e21e | 1159 | case OP_NULL: |
11343788 | 1160 | if (o->op_flags & OPf_STACKED) |
a0d0e21e | 1161 | break; |
5aabfad6 | 1162 | /* FALL THROUGH */ |
2ebea0a1 GS |
1163 | case OP_NEXTSTATE: |
1164 | case OP_DBSTATE: | |
79072805 LW |
1165 | case OP_ENTERTRY: |
1166 | case OP_ENTER: | |
11343788 | 1167 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1168 | break; |
54310121 | 1169 | /* FALL THROUGH */ |
463ee0b2 | 1170 | case OP_SCOPE: |
79072805 LW |
1171 | case OP_LEAVE: |
1172 | case OP_LEAVETRY: | |
a0d0e21e | 1173 | case OP_LEAVELOOP: |
79072805 | 1174 | case OP_LINESEQ: |
79072805 | 1175 | case OP_LIST: |
0d863452 RH |
1176 | case OP_LEAVEGIVEN: |
1177 | case OP_LEAVEWHEN: | |
11343788 | 1178 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
1179 | scalarvoid(kid); |
1180 | break; | |
c90c0ff4 | 1181 | case OP_ENTEREVAL: |
5196be3e | 1182 | scalarkids(o); |
c90c0ff4 | 1183 | break; |
5aabfad6 | 1184 | case OP_REQUIRE: |
c90c0ff4 | 1185 | /* all requires must return a boolean value */ |
5196be3e | 1186 | o->op_flags &= ~OPf_WANT; |
d6483035 GS |
1187 | /* FALL THROUGH */ |
1188 | case OP_SCALAR: | |
5196be3e | 1189 | return scalar(o); |
79072805 | 1190 | } |
411caa50 | 1191 | if (useless && ckWARN(WARN_VOID)) |
9014280d | 1192 | Perl_warner(aTHX_ packWARN(WARN_VOID), "Useless use of %s in void context", useless); |
11343788 | 1193 | return o; |
79072805 LW |
1194 | } |
1195 | ||
1f676739 | 1196 | static OP * |
412da003 | 1197 | S_listkids(pTHX_ OP *o) |
79072805 | 1198 | { |
11343788 | 1199 | if (o && o->op_flags & OPf_KIDS) { |
6867be6d | 1200 | OP *kid; |
11343788 | 1201 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
1202 | list(kid); |
1203 | } | |
11343788 | 1204 | return o; |
79072805 LW |
1205 | } |
1206 | ||
1207 | OP * | |
864dbfa3 | 1208 | Perl_list(pTHX_ OP *o) |
79072805 | 1209 | { |
27da23d5 | 1210 | dVAR; |
79072805 LW |
1211 | OP *kid; |
1212 | ||
a0d0e21e | 1213 | /* assumes no premature commitment */ |
13765c85 DM |
1214 | if (!o || (o->op_flags & OPf_WANT) |
1215 | || (PL_parser && PL_parser->error_count) | |
5dc0d613 | 1216 | || o->op_type == OP_RETURN) |
7e363e51 | 1217 | { |
11343788 | 1218 | return o; |
7e363e51 | 1219 | } |
79072805 | 1220 | |
b162f9ea | 1221 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
1222 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
1223 | { | |
b162f9ea | 1224 | return o; /* As if inside SASSIGN */ |
7e363e51 | 1225 | } |
1c846c1f | 1226 | |
5dc0d613 | 1227 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_LIST; |
79072805 | 1228 | |
11343788 | 1229 | switch (o->op_type) { |
79072805 LW |
1230 | case OP_FLOP: |
1231 | case OP_REPEAT: | |
11343788 | 1232 | list(cBINOPo->op_first); |
79072805 LW |
1233 | break; |
1234 | case OP_OR: | |
1235 | case OP_AND: | |
1236 | case OP_COND_EXPR: | |
11343788 | 1237 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
1238 | list(kid); |
1239 | break; | |
1240 | default: | |
1241 | case OP_MATCH: | |
8782bef2 | 1242 | case OP_QR: |
79072805 LW |
1243 | case OP_SUBST: |
1244 | case OP_NULL: | |
11343788 | 1245 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1246 | break; |
11343788 MB |
1247 | if (!o->op_next && cUNOPo->op_first->op_type == OP_FLOP) { |
1248 | list(cBINOPo->op_first); | |
1249 | return gen_constant_list(o); | |
79072805 LW |
1250 | } |
1251 | case OP_LIST: | |
11343788 | 1252 | listkids(o); |
79072805 LW |
1253 | break; |
1254 | case OP_LEAVE: | |
1255 | case OP_LEAVETRY: | |
5dc0d613 | 1256 | kid = cLISTOPo->op_first; |
54310121 | 1257 | list(kid); |
155aba94 | 1258 | while ((kid = kid->op_sibling)) { |
54310121 | 1259 | if (kid->op_sibling) |
1260 | scalarvoid(kid); | |
1261 | else | |
1262 | list(kid); | |
1263 | } | |
11206fdd | 1264 | PL_curcop = &PL_compiling; |
54310121 | 1265 | break; |
748a9306 | 1266 | case OP_SCOPE: |
79072805 | 1267 | case OP_LINESEQ: |
11343788 | 1268 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
1269 | if (kid->op_sibling) |
1270 | scalarvoid(kid); | |
1271 | else | |
1272 | list(kid); | |
1273 | } | |
11206fdd | 1274 | PL_curcop = &PL_compiling; |
79072805 | 1275 | break; |
c90c0ff4 | 1276 | case OP_REQUIRE: |
1277 | /* all requires must return a boolean value */ | |
5196be3e MB |
1278 | o->op_flags &= ~OPf_WANT; |
1279 | return scalar(o); | |
79072805 | 1280 | } |
11343788 | 1281 | return o; |
79072805 LW |
1282 | } |
1283 | ||
1f676739 | 1284 | static OP * |
2dd5337b | 1285 | S_scalarseq(pTHX_ OP *o) |
79072805 | 1286 | { |
97aff369 | 1287 | dVAR; |
11343788 | 1288 | if (o) { |
1496a290 AL |
1289 | const OPCODE type = o->op_type; |
1290 | ||
1291 | if (type == OP_LINESEQ || type == OP_SCOPE || | |
1292 | type == OP_LEAVE || type == OP_LEAVETRY) | |
463ee0b2 | 1293 | { |
6867be6d | 1294 | OP *kid; |
11343788 | 1295 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
ed6116ce | 1296 | if (kid->op_sibling) { |
463ee0b2 | 1297 | scalarvoid(kid); |
ed6116ce | 1298 | } |
463ee0b2 | 1299 | } |
3280af22 | 1300 | PL_curcop = &PL_compiling; |
79072805 | 1301 | } |
11343788 | 1302 | o->op_flags &= ~OPf_PARENS; |
3280af22 | 1303 | if (PL_hints & HINT_BLOCK_SCOPE) |
11343788 | 1304 | o->op_flags |= OPf_PARENS; |
79072805 | 1305 | } |
8990e307 | 1306 | else |
11343788 MB |
1307 | o = newOP(OP_STUB, 0); |
1308 | return o; | |
79072805 LW |
1309 | } |
1310 | ||
76e3520e | 1311 | STATIC OP * |
cea2e8a9 | 1312 | S_modkids(pTHX_ OP *o, I32 type) |
79072805 | 1313 | { |
11343788 | 1314 | if (o && o->op_flags & OPf_KIDS) { |
6867be6d | 1315 | OP *kid; |
11343788 | 1316 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 | 1317 | mod(kid, type); |
79072805 | 1318 | } |
11343788 | 1319 | return o; |
79072805 LW |
1320 | } |
1321 | ||
ff7298cb | 1322 | /* Propagate lvalue ("modifiable") context to an op and its children. |
ddeae0f1 DM |
1323 | * 'type' represents the context type, roughly based on the type of op that |
1324 | * would do the modifying, although local() is represented by OP_NULL. | |
1325 | * It's responsible for detecting things that can't be modified, flag | |
1326 | * things that need to behave specially in an lvalue context (e.g., "$$x = 5" | |
1327 | * might have to vivify a reference in $x), and so on. | |
1328 | * | |
1329 | * For example, "$a+1 = 2" would cause mod() to be called with o being | |
1330 | * OP_ADD and type being OP_SASSIGN, and would output an error. | |
1331 | */ | |
1332 | ||
79072805 | 1333 | OP * |
864dbfa3 | 1334 | Perl_mod(pTHX_ OP *o, I32 type) |
79072805 | 1335 | { |
27da23d5 | 1336 | dVAR; |
79072805 | 1337 | OP *kid; |
ddeae0f1 DM |
1338 | /* -1 = error on localize, 0 = ignore localize, 1 = ok to localize */ |
1339 | int localize = -1; | |
79072805 | 1340 | |
13765c85 | 1341 | if (!o || (PL_parser && PL_parser->error_count)) |
11343788 | 1342 | return o; |
79072805 | 1343 | |
b162f9ea | 1344 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
1345 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
1346 | { | |
b162f9ea | 1347 | return o; |
7e363e51 | 1348 | } |
1c846c1f | 1349 | |
11343788 | 1350 | switch (o->op_type) { |
68dc0745 | 1351 | case OP_UNDEF: |
ddeae0f1 | 1352 | localize = 0; |
3280af22 | 1353 | PL_modcount++; |
5dc0d613 | 1354 | return o; |
a0d0e21e | 1355 | case OP_CONST: |
2e0ae2d3 | 1356 | if (!(o->op_private & OPpCONST_ARYBASE)) |
a0d0e21e | 1357 | goto nomod; |
54dc0f91 | 1358 | localize = 0; |
3280af22 | 1359 | if (PL_eval_start && PL_eval_start->op_type == OP_CONST) { |
fc15ae8f NC |
1360 | CopARYBASE_set(&PL_compiling, |
1361 | (I32)SvIV(cSVOPx(PL_eval_start)->op_sv)); | |
3280af22 | 1362 | PL_eval_start = 0; |
a0d0e21e LW |
1363 | } |
1364 | else if (!type) { | |
fc15ae8f NC |
1365 | SAVECOPARYBASE(&PL_compiling); |
1366 | CopARYBASE_set(&PL_compiling, 0); | |
a0d0e21e LW |
1367 | } |
1368 | else if (type == OP_REFGEN) | |
1369 | goto nomod; | |
1370 | else | |
cea2e8a9 | 1371 | Perl_croak(aTHX_ "That use of $[ is unsupported"); |
a0d0e21e | 1372 | break; |
5f05dabc | 1373 | case OP_STUB: |
58bde88d | 1374 | if ((o->op_flags & OPf_PARENS) || PL_madskills) |
5f05dabc | 1375 | break; |
1376 | goto nomod; | |
a0d0e21e LW |
1377 | case OP_ENTERSUB: |
1378 | if ((type == OP_UNDEF || type == OP_REFGEN) && | |
11343788 MB |
1379 | !(o->op_flags & OPf_STACKED)) { |
1380 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
e26df76a NC |
1381 | /* The default is to set op_private to the number of children, |
1382 | which for a UNOP such as RV2CV is always 1. And w're using | |
1383 | the bit for a flag in RV2CV, so we need it clear. */ | |
1384 | o->op_private &= ~1; | |
22c35a8c | 1385 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 | 1386 | assert(cUNOPo->op_first->op_type == OP_NULL); |
93c66552 | 1387 | op_null(((LISTOP*)cUNOPo->op_first)->op_first);/* disable pushmark */ |
79072805 LW |
1388 | break; |
1389 | } | |
95f0a2f1 SB |
1390 | else if (o->op_private & OPpENTERSUB_NOMOD) |
1391 | return o; | |
cd06dffe GS |
1392 | else { /* lvalue subroutine call */ |
1393 | o->op_private |= OPpLVAL_INTRO; | |
e6438c1a | 1394 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
4978d6d9 | 1395 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) { |
cd06dffe GS |
1396 | /* Backward compatibility mode: */ |
1397 | o->op_private |= OPpENTERSUB_INARGS; | |
1398 | break; | |
1399 | } | |
1400 | else { /* Compile-time error message: */ | |
1401 | OP *kid = cUNOPo->op_first; | |
1402 | CV *cv; | |
1403 | OP *okid; | |
1404 | ||
3ea285d1 AL |
1405 | if (kid->op_type != OP_PUSHMARK) { |
1406 | if (kid->op_type != OP_NULL || kid->op_targ != OP_LIST) | |
1407 | Perl_croak(aTHX_ | |
1408 | "panic: unexpected lvalue entersub " | |
1409 | "args: type/targ %ld:%"UVuf, | |
1410 | (long)kid->op_type, (UV)kid->op_targ); | |
1411 | kid = kLISTOP->op_first; | |
1412 | } | |
cd06dffe GS |
1413 | while (kid->op_sibling) |
1414 | kid = kid->op_sibling; | |
1415 | if (!(kid->op_type == OP_NULL && kid->op_targ == OP_RV2CV)) { | |
1416 | /* Indirect call */ | |
1417 | if (kid->op_type == OP_METHOD_NAMED | |
1418 | || kid->op_type == OP_METHOD) | |
1419 | { | |
87d7fd28 | 1420 | UNOP *newop; |
b2ffa427 | 1421 | |
87d7fd28 | 1422 | NewOp(1101, newop, 1, UNOP); |
349fd7b7 GS |
1423 | newop->op_type = OP_RV2CV; |
1424 | newop->op_ppaddr = PL_ppaddr[OP_RV2CV]; | |
5f66b61c | 1425 | newop->op_first = NULL; |
87d7fd28 GS |
1426 | newop->op_next = (OP*)newop; |
1427 | kid->op_sibling = (OP*)newop; | |
349fd7b7 | 1428 | newop->op_private |= OPpLVAL_INTRO; |
e26df76a | 1429 | newop->op_private &= ~1; |
cd06dffe GS |
1430 | break; |
1431 | } | |
b2ffa427 | 1432 | |
cd06dffe GS |
1433 | if (kid->op_type != OP_RV2CV) |
1434 | Perl_croak(aTHX_ | |
1435 | "panic: unexpected lvalue entersub " | |
55140b79 | 1436 | "entry via type/targ %ld:%"UVuf, |
3d811634 | 1437 | (long)kid->op_type, (UV)kid->op_targ); |
cd06dffe GS |
1438 | kid->op_private |= OPpLVAL_INTRO; |
1439 | break; /* Postpone until runtime */ | |
1440 | } | |
b2ffa427 NIS |
1441 | |
1442 | okid = kid; | |
cd06dffe GS |
1443 | kid = kUNOP->op_first; |
1444 | if (kid->op_type == OP_NULL && kid->op_targ == OP_RV2SV) | |
1445 | kid = kUNOP->op_first; | |
b2ffa427 | 1446 | if (kid->op_type == OP_NULL) |
cd06dffe GS |
1447 | Perl_croak(aTHX_ |
1448 | "Unexpected constant lvalue entersub " | |
55140b79 | 1449 | "entry via type/targ %ld:%"UVuf, |
3d811634 | 1450 | (long)kid->op_type, (UV)kid->op_targ); |
cd06dffe GS |
1451 | if (kid->op_type != OP_GV) { |
1452 | /* Restore RV2CV to check lvalueness */ | |
1453 | restore_2cv: | |
1454 | if (kid->op_next && kid->op_next != kid) { /* Happens? */ | |
1455 | okid->op_next = kid->op_next; | |
1456 | kid->op_next = okid; | |
1457 | } | |
1458 | else | |
5f66b61c | 1459 | okid->op_next = NULL; |
cd06dffe GS |
1460 | okid->op_type = OP_RV2CV; |
1461 | okid->op_targ = 0; | |
1462 | okid->op_ppaddr = PL_ppaddr[OP_RV2CV]; | |
1463 | okid->op_private |= OPpLVAL_INTRO; | |
e26df76a | 1464 | okid->op_private &= ~1; |
cd06dffe GS |
1465 | break; |
1466 | } | |
b2ffa427 | 1467 | |
638eceb6 | 1468 | cv = GvCV(kGVOP_gv); |
1c846c1f | 1469 | if (!cv) |
cd06dffe GS |
1470 | goto restore_2cv; |
1471 | if (CvLVALUE(cv)) | |
1472 | break; | |
1473 | } | |
1474 | } | |
79072805 LW |
1475 | /* FALL THROUGH */ |
1476 | default: | |
a0d0e21e | 1477 | nomod: |
6fbb66d6 NC |
1478 | /* grep, foreach, subcalls, refgen */ |
1479 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) | |
a0d0e21e | 1480 | break; |
cea2e8a9 | 1481 | yyerror(Perl_form(aTHX_ "Can't modify %s in %s", |
638bc118 | 1482 | (o->op_type == OP_NULL && (o->op_flags & OPf_SPECIAL) |
cd06dffe GS |
1483 | ? "do block" |
1484 | : (o->op_type == OP_ENTERSUB | |
1485 | ? "non-lvalue subroutine call" | |
53e06cf0 | 1486 | : OP_DESC(o))), |
22c35a8c | 1487 | type ? PL_op_desc[type] : "local")); |
11343788 | 1488 | return o; |
79072805 | 1489 | |
a0d0e21e LW |
1490 | case OP_PREINC: |
1491 | case OP_PREDEC: | |
1492 | case OP_POW: | |
1493 | case OP_MULTIPLY: | |
1494 | case OP_DIVIDE: | |
1495 | case OP_MODULO: | |
1496 | case OP_REPEAT: | |
1497 | case OP_ADD: | |
1498 | case OP_SUBTRACT: | |
1499 | case OP_CONCAT: | |
1500 | case OP_LEFT_SHIFT: | |
1501 | case OP_RIGHT_SHIFT: | |
1502 | case OP_BIT_AND: | |
1503 | case OP_BIT_XOR: | |
1504 | case OP_BIT_OR: | |
1505 | case OP_I_MULTIPLY: | |
1506 | case OP_I_DIVIDE: | |
1507 | case OP_I_MODULO: | |
1508 | case OP_I_ADD: | |
1509 | case OP_I_SUBTRACT: | |
11343788 | 1510 | if (!(o->op_flags & OPf_STACKED)) |
a0d0e21e | 1511 | goto nomod; |
3280af22 | 1512 | PL_modcount++; |
a0d0e21e | 1513 | break; |
b2ffa427 | 1514 | |
79072805 | 1515 | case OP_COND_EXPR: |
ddeae0f1 | 1516 | localize = 1; |
11343788 | 1517 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 | 1518 | mod(kid, type); |
79072805 LW |
1519 | break; |
1520 | ||
1521 | case OP_RV2AV: | |
1522 | case OP_RV2HV: | |
11343788 | 1523 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) { |
e6438c1a | 1524 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
11343788 | 1525 | return o; /* Treat \(@foo) like ordinary list. */ |
748a9306 LW |
1526 | } |
1527 | /* FALL THROUGH */ | |
79072805 | 1528 | case OP_RV2GV: |
5dc0d613 | 1529 | if (scalar_mod_type(o, type)) |
3fe9a6f1 | 1530 | goto nomod; |
11343788 | 1531 | ref(cUNOPo->op_first, o->op_type); |
79072805 | 1532 | /* FALL THROUGH */ |
79072805 LW |
1533 | case OP_ASLICE: |
1534 | case OP_HSLICE: | |
78f9721b SM |
1535 | if (type == OP_LEAVESUBLV) |
1536 | o->op_private |= OPpMAYBE_LVSUB; | |
ddeae0f1 | 1537 | localize = 1; |
78f9721b SM |
1538 | /* FALL THROUGH */ |
1539 | case OP_AASSIGN: | |
93a17b20 LW |
1540 | case OP_NEXTSTATE: |
1541 | case OP_DBSTATE: | |
e6438c1a | 1542 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
79072805 | 1543 | break; |
463ee0b2 | 1544 | case OP_RV2SV: |
aeea060c | 1545 | ref(cUNOPo->op_first, o->op_type); |
ddeae0f1 | 1546 | localize = 1; |
463ee0b2 | 1547 | /* FALL THROUGH */ |
79072805 | 1548 | case OP_GV: |
463ee0b2 | 1549 | case OP_AV2ARYLEN: |
3280af22 | 1550 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 1551 | case OP_SASSIGN: |
bf4b1e52 GS |
1552 | case OP_ANDASSIGN: |
1553 | case OP_ORASSIGN: | |
c963b151 | 1554 | case OP_DORASSIGN: |
ddeae0f1 DM |
1555 | PL_modcount++; |
1556 | break; | |
1557 | ||
8990e307 | 1558 | case OP_AELEMFAST: |
6a077020 | 1559 | localize = -1; |
3280af22 | 1560 | PL_modcount++; |
8990e307 LW |
1561 | break; |
1562 | ||
748a9306 LW |
1563 | case OP_PADAV: |
1564 | case OP_PADHV: | |
e6438c1a | 1565 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
5196be3e MB |
1566 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) |
1567 | return o; /* Treat \(@foo) like ordinary list. */ | |
1568 | if (scalar_mod_type(o, type)) | |
3fe9a6f1 | 1569 | goto nomod; |
78f9721b SM |
1570 | if (type == OP_LEAVESUBLV) |
1571 | o->op_private |= OPpMAYBE_LVSUB; | |
748a9306 LW |
1572 | /* FALL THROUGH */ |
1573 | case OP_PADSV: | |
3280af22 | 1574 | PL_modcount++; |
ddeae0f1 | 1575 | if (!type) /* local() */ |
cea2e8a9 | 1576 | Perl_croak(aTHX_ "Can't localize lexical variable %s", |
dd2155a4 | 1577 | PAD_COMPNAME_PV(o->op_targ)); |
463ee0b2 LW |
1578 | break; |
1579 | ||
748a9306 | 1580 | case OP_PUSHMARK: |
ddeae0f1 | 1581 | localize = 0; |
748a9306 | 1582 | break; |
b2ffa427 | 1583 | |
69969c6f SB |
1584 | case OP_KEYS: |
1585 | if (type != OP_SASSIGN) | |
1586 | goto nomod; | |
5d82c453 GA |
1587 | goto lvalue_func; |
1588 | case OP_SUBSTR: | |
1589 | if (o->op_private == 4) /* don't allow 4 arg substr as lvalue */ | |
1590 | goto nomod; | |
5f05dabc | 1591 | /* FALL THROUGH */ |
a0d0e21e | 1592 | case OP_POS: |
463ee0b2 | 1593 | case OP_VEC: |
78f9721b SM |
1594 | if (type == OP_LEAVESUBLV) |
1595 | o->op_private |= OPpMAYBE_LVSUB; | |
5d82c453 | 1596 | lvalue_func: |
11343788 MB |
1597 | pad_free(o->op_targ); |
1598 | o->op_targ = pad_alloc(o->op_type, SVs_PADMY); | |
5dc0d613 | 1599 | assert(SvTYPE(PAD_SV(o->op_targ)) == SVt_NULL); |
11343788 MB |
1600 | if (o->op_flags & OPf_KIDS) |
1601 | mod(cBINOPo->op_first->op_sibling, type); | |
463ee0b2 | 1602 | break; |
a0d0e21e | 1603 | |
463ee0b2 LW |
1604 | case OP_AELEM: |
1605 | case OP_HELEM: | |
11343788 | 1606 | ref(cBINOPo->op_first, o->op_type); |
68dc0745 | 1607 | if (type == OP_ENTERSUB && |
5dc0d613 MB |
1608 | !(o->op_private & (OPpLVAL_INTRO | OPpDEREF))) |
1609 | o->op_private |= OPpLVAL_DEFER; | |
78f9721b SM |
1610 | if (type == OP_LEAVESUBLV) |
1611 | o->op_private |= OPpMAYBE_LVSUB; | |
ddeae0f1 | 1612 | localize = 1; |
3280af22 | 1613 | PL_modcount++; |
463ee0b2 LW |
1614 | break; |
1615 | ||
1616 | case OP_SCOPE: | |
1617 | case OP_LEAVE: | |
1618 | case OP_ENTER: | |
78f9721b | 1619 | case OP_LINESEQ: |
ddeae0f1 | 1620 | localize = 0; |
11343788 MB |
1621 | if (o->op_flags & OPf_KIDS) |
1622 | mod(cLISTOPo->op_last, type); | |
a0d0e21e LW |
1623 | break; |
1624 | ||
1625 | case OP_NULL: | |
ddeae0f1 | 1626 | localize = 0; |
638bc118 GS |
1627 | if (o->op_flags & OPf_SPECIAL) /* do BLOCK */ |
1628 | goto nomod; | |
1629 | else if (!(o->op_flags & OPf_KIDS)) | |
463ee0b2 | 1630 | break; |
11343788 MB |
1631 | if (o->op_targ != OP_LIST) { |
1632 | mod(cBINOPo->op_first, type); | |
a0d0e21e LW |
1633 | break; |
1634 | } | |
1635 | /* FALL THROUGH */ | |
463ee0b2 | 1636 | case OP_LIST: |
ddeae0f1 | 1637 | localize = 0; |
11343788 | 1638 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1639 | mod(kid, type); |
1640 | break; | |
78f9721b SM |
1641 | |
1642 | case OP_RETURN: | |
1643 | if (type != OP_LEAVESUBLV) | |
1644 | goto nomod; | |
1645 | break; /* mod()ing was handled by ck_return() */ | |
463ee0b2 | 1646 | } |
58d95175 | 1647 | |
8be1be90 AMS |
1648 | /* [20011101.069] File test operators interpret OPf_REF to mean that |
1649 | their argument is a filehandle; thus \stat(".") should not set | |
1650 | it. AMS 20011102 */ | |
1651 | if (type == OP_REFGEN && | |
1652 | PL_check[o->op_type] == MEMBER_TO_FPTR(Perl_ck_ftst)) | |
1653 | return o; | |
1654 | ||
1655 | if (type != OP_LEAVESUBLV) | |
1656 | o->op_flags |= OPf_MOD; | |
1657 | ||
1658 | if (type == OP_AASSIGN || type == OP_SASSIGN) | |
1659 | o->op_flags |= OPf_SPECIAL|OPf_REF; | |
ddeae0f1 DM |
1660 | else if (!type) { /* local() */ |
1661 | switch (localize) { | |
1662 | case 1: | |
1663 | o->op_private |= OPpLVAL_INTRO; | |
1664 | o->op_flags &= ~OPf_SPECIAL; | |
1665 | PL_hints |= HINT_BLOCK_SCOPE; | |
1666 | break; | |
1667 | case 0: | |
1668 | break; | |
1669 | case -1: | |
1670 | if (ckWARN(WARN_SYNTAX)) { | |
1671 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), | |
1672 | "Useless localization of %s", OP_DESC(o)); | |
1673 | } | |
1674 | } | |
463ee0b2 | 1675 | } |
8be1be90 AMS |
1676 | else if (type != OP_GREPSTART && type != OP_ENTERSUB |
1677 | && type != OP_LEAVESUBLV) | |
1678 | o->op_flags |= OPf_REF; | |
11343788 | 1679 | return o; |
463ee0b2 LW |
1680 | } |
1681 | ||
864dbfa3 | 1682 | STATIC bool |
5f66b61c | 1683 | S_scalar_mod_type(const OP *o, I32 type) |
3fe9a6f1 | 1684 | { |
7918f24d NC |
1685 | PERL_ARGS_ASSERT_SCALAR_MOD_TYPE; |
1686 | ||
3fe9a6f1 | 1687 | switch (type) { |
1688 | case OP_SASSIGN: | |
5196be3e | 1689 | if (o->op_type == OP_RV2GV) |
3fe9a6f1 | 1690 | return FALSE; |
1691 | /* FALL THROUGH */ | |
1692 | case OP_PREINC: | |
1693 | case OP_PREDEC: | |
1694 | case OP_POSTINC: | |
1695 | case OP_POSTDEC: | |
1696 | case OP_I_PREINC: | |
1697 | case OP_I_PREDEC: | |
1698 | case OP_I_POSTINC: | |
1699 | case OP_I_POSTDEC: | |
1700 | case OP_POW: | |
1701 | case OP_MULTIPLY: | |
1702 | case OP_DIVIDE: | |
1703 | case OP_MODULO: | |
1704 | case OP_REPEAT: | |
1705 | case OP_ADD: | |
1706 | case OP_SUBTRACT: | |
1707 | case OP_I_MULTIPLY: | |
1708 | case OP_I_DIVIDE: | |
1709 | case OP_I_MODULO: | |
1710 | case OP_I_ADD: | |
1711 | case OP_I_SUBTRACT: | |
1712 | case OP_LEFT_SHIFT: | |
1713 | case OP_RIGHT_SHIFT: | |
1714 | case OP_BIT_AND: | |
1715 | case OP_BIT_XOR: | |
1716 | case OP_BIT_OR: | |
1717 | case OP_CONCAT: | |
1718 | case OP_SUBST: | |
1719 | case OP_TRANS: | |
49e9fbe6 GS |
1720 | case OP_READ: |
1721 | case OP_SYSREAD: | |
1722 | case OP_RECV: | |
bf4b1e52 GS |
1723 | case OP_ANDASSIGN: |
1724 | case OP_ORASSIGN: | |
410d09fe | 1725 | case OP_DORASSIGN: |
3fe9a6f1 | 1726 | return TRUE; |
1727 | default: | |
1728 | return FALSE; | |
1729 | } | |
1730 | } | |
1731 | ||
35cd451c | 1732 | STATIC bool |
5f66b61c | 1733 | S_is_handle_constructor(const OP *o, I32 numargs) |
35cd451c | 1734 | { |
7918f24d NC |
1735 | PERL_ARGS_ASSERT_IS_HANDLE_CONSTRUCTOR; |
1736 | ||
35cd451c GS |
1737 | switch (o->op_type) { |
1738 | case OP_PIPE_OP: | |
1739 | case OP_SOCKPAIR: | |
504618e9 | 1740 | if (numargs == 2) |
35cd451c GS |
1741 | return TRUE; |
1742 | /* FALL THROUGH */ | |
1743 | case OP_SYSOPEN: | |
1744 | case OP_OPEN: | |
ded8aa31 | 1745 | case OP_SELECT: /* XXX c.f. SelectSaver.pm */ |
35cd451c GS |
1746 | case OP_SOCKET: |
1747 | case OP_OPEN_DIR: | |
1748 | case OP_ACCEPT: | |
504618e9 | 1749 | if (numargs == 1) |
35cd451c | 1750 | return TRUE; |
5f66b61c | 1751 | /* FALLTHROUGH */ |
35cd451c GS |
1752 | default: |
1753 | return FALSE; | |
1754 | } | |
1755 | } | |
1756 | ||
0d86688d NC |
1757 | static OP * |
1758 | S_refkids(pTHX_ OP *o, I32 type) | |
463ee0b2 | 1759 | { |
11343788 | 1760 | if (o && o->op_flags & OPf_KIDS) { |
6867be6d | 1761 | OP *kid; |
11343788 | 1762 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1763 | ref(kid, type); |
1764 | } | |
11343788 | 1765 | return o; |
463ee0b2 LW |
1766 | } |
1767 | ||
1768 | OP * | |
e4c5ccf3 | 1769 | Perl_doref(pTHX_ OP *o, I32 type, bool set_op_ref) |
463ee0b2 | 1770 | { |
27da23d5 | 1771 | dVAR; |
463ee0b2 | 1772 | OP *kid; |
463ee0b2 | 1773 | |
7918f24d NC |
1774 | PERL_ARGS_ASSERT_DOREF; |
1775 | ||
13765c85 | 1776 | if (!o || (PL_parser && PL_parser->error_count)) |
11343788 | 1777 | return o; |
463ee0b2 | 1778 | |
11343788 | 1779 | switch (o->op_type) { |
a0d0e21e | 1780 | case OP_ENTERSUB: |
afebc493 | 1781 | if ((type == OP_EXISTS || type == OP_DEFINED || type == OP_LOCK) && |
11343788 MB |
1782 | !(o->op_flags & OPf_STACKED)) { |
1783 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
22c35a8c | 1784 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 | 1785 | assert(cUNOPo->op_first->op_type == OP_NULL); |
93c66552 | 1786 | op_null(((LISTOP*)cUNOPo->op_first)->op_first); /* disable pushmark */ |
11343788 | 1787 | o->op_flags |= OPf_SPECIAL; |
e26df76a | 1788 | o->op_private &= ~1; |
8990e307 LW |
1789 | } |
1790 | break; | |
aeea060c | 1791 | |
463ee0b2 | 1792 | case OP_COND_EXPR: |
11343788 | 1793 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
e4c5ccf3 | 1794 | doref(kid, type, set_op_ref); |
463ee0b2 | 1795 | break; |
8990e307 | 1796 | case OP_RV2SV: |
35cd451c GS |
1797 | if (type == OP_DEFINED) |
1798 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
e4c5ccf3 | 1799 | doref(cUNOPo->op_first, o->op_type, set_op_ref); |
4633a7c4 LW |
1800 | /* FALL THROUGH */ |
1801 | case OP_PADSV: | |
5f05dabc | 1802 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1803 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1804 | : type == OP_RV2HV ? OPpDEREF_HV | |
1805 | : OPpDEREF_SV); | |
11343788 | 1806 | o->op_flags |= OPf_MOD; |
a0d0e21e | 1807 | } |
8990e307 | 1808 | break; |
1c846c1f | 1809 | |
463ee0b2 LW |
1810 | case OP_RV2AV: |
1811 | case OP_RV2HV: | |
e4c5ccf3 RH |
1812 | if (set_op_ref) |
1813 | o->op_flags |= OPf_REF; | |
8990e307 | 1814 | /* FALL THROUGH */ |
463ee0b2 | 1815 | case OP_RV2GV: |
35cd451c GS |
1816 | if (type == OP_DEFINED) |
1817 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
e4c5ccf3 | 1818 | doref(cUNOPo->op_first, o->op_type, set_op_ref); |
463ee0b2 | 1819 | break; |
8990e307 | 1820 | |
463ee0b2 LW |
1821 | case OP_PADAV: |
1822 | case OP_PADHV: | |
e4c5ccf3 RH |
1823 | if (set_op_ref) |
1824 | o->op_flags |= OPf_REF; | |
79072805 | 1825 | break; |
aeea060c | 1826 | |
8990e307 | 1827 | case OP_SCALAR: |
79072805 | 1828 | case OP_NULL: |
11343788 | 1829 | if (!(o->op_flags & OPf_KIDS)) |
463ee0b2 | 1830 | break; |
e4c5ccf3 | 1831 | doref(cBINOPo->op_first, type, set_op_ref); |
79072805 LW |
1832 | break; |
1833 | case OP_AELEM: | |
1834 | case OP_HELEM: | |
e4c5ccf3 | 1835 | doref(cBINOPo->op_first, o->op_type, set_op_ref); |
5f05dabc | 1836 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1837 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1838 | : type == OP_RV2HV ? OPpDEREF_HV | |
1839 | : OPpDEREF_SV); | |
11343788 | 1840 | o->op_flags |= OPf_MOD; |
8990e307 | 1841 | } |
79072805 LW |
1842 | break; |
1843 | ||
463ee0b2 | 1844 | case OP_SCOPE: |
79072805 | 1845 | case OP_LEAVE: |
e4c5ccf3 RH |
1846 | set_op_ref = FALSE; |
1847 | /* FALL THROUGH */ | |
79072805 | 1848 | case OP_ENTER: |
8990e307 | 1849 | case OP_LIST: |
11343788 | 1850 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1851 | break; |
e4c5ccf3 | 1852 | doref(cLISTOPo->op_last, type, set_op_ref); |
79072805 | 1853 | break; |
a0d0e21e LW |
1854 | default: |
1855 | break; | |
79072805 | 1856 | } |
11343788 | 1857 | return scalar(o); |
8990e307 | 1858 | |
79072805 LW |
1859 | } |
1860 | ||
09bef843 SB |
1861 | STATIC OP * |
1862 | S_dup_attrlist(pTHX_ OP *o) | |
1863 | { | |
97aff369 | 1864 | dVAR; |
0bd48802 | 1865 | OP *rop; |
09bef843 | 1866 | |
7918f24d NC |
1867 | PERL_ARGS_ASSERT_DUP_ATTRLIST; |
1868 | ||
09bef843 SB |
1869 | /* An attrlist is either a simple OP_CONST or an OP_LIST with kids, |
1870 | * where the first kid is OP_PUSHMARK and the remaining ones | |
1871 | * are OP_CONST. We need to push the OP_CONST values. | |
1872 | */ | |
1873 | if (o->op_type == OP_CONST) | |
b37c2d43 | 1874 | rop = newSVOP(OP_CONST, o->op_flags, SvREFCNT_inc_NN(cSVOPo->op_sv)); |
eb8433b7 NC |
1875 | #ifdef PERL_MAD |
1876 | else if (o->op_type == OP_NULL) | |
1d866c12 | 1877 | rop = NULL; |
eb8433b7 | 1878 | #endif |
09bef843 SB |
1879 | else { |
1880 | assert((o->op_type == OP_LIST) && (o->op_flags & OPf_KIDS)); | |
5f66b61c | 1881 | rop = NULL; |
09bef843 SB |
1882 | for (o = cLISTOPo->op_first; o; o=o->op_sibling) { |
1883 | if (o->op_type == OP_CONST) | |
1884 | rop = append_elem(OP_LIST, rop, | |
1885 | newSVOP(OP_CONST, o->op_flags, | |
b37c2d43 | 1886 | SvREFCNT_inc_NN(cSVOPo->op_sv))); |
09bef843 SB |
1887 | } |
1888 | } | |
1889 | return rop; | |
1890 | } | |
1891 | ||
1892 | STATIC void | |
95f0a2f1 | 1893 | S_apply_attrs(pTHX_ HV *stash, SV *target, OP *attrs, bool for_my) |
09bef843 | 1894 | { |
27da23d5 | 1895 | dVAR; |
09bef843 SB |
1896 | SV *stashsv; |
1897 | ||
7918f24d NC |
1898 | PERL_ARGS_ASSERT_APPLY_ATTRS; |
1899 | ||
09bef843 SB |
1900 | /* fake up C<use attributes $pkg,$rv,@attrs> */ |
1901 | ENTER; /* need to protect against side-effects of 'use' */ | |
5aaec2b4 | 1902 | stashsv = stash ? newSVhek(HvNAME_HEK(stash)) : &PL_sv_no; |
e4783991 | 1903 | |
09bef843 | 1904 | #define ATTRSMODULE "attributes" |
95f0a2f1 SB |
1905 | #define ATTRSMODULE_PM "attributes.pm" |
1906 | ||
1907 | if (for_my) { | |
95f0a2f1 | 1908 | /* Don't force the C<use> if we don't need it. */ |
a4fc7abc | 1909 | SV * const * const svp = hv_fetchs(GvHVn(PL_incgv), ATTRSMODULE_PM, FALSE); |
95f0a2f1 | 1910 | if (svp && *svp != &PL_sv_undef) |
6f207bd3 | 1911 | NOOP; /* already in %INC */ |
95f0a2f1 SB |
1912 | else |
1913 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, | |
6136c704 | 1914 | newSVpvs(ATTRSMODULE), NULL); |
95f0a2f1 SB |
1915 | } |
1916 | else { | |
1917 | Perl_load_module(aTHX_ PERL_LOADMOD_IMPORT_OPS, | |
6136c704 AL |
1918 | newSVpvs(ATTRSMODULE), |
1919 | NULL, | |
95f0a2f1 SB |
1920 | prepend_elem(OP_LIST, |
1921 | newSVOP(OP_CONST, 0, stashsv), | |
1922 | prepend_elem(OP_LIST, | |
1923 | newSVOP(OP_CONST, 0, | |
1924 | newRV(target)), | |
1925 | dup_attrlist(attrs)))); | |
1926 | } | |
09bef843 SB |
1927 | LEAVE; |
1928 | } | |
1929 | ||
95f0a2f1 SB |
1930 | STATIC void |
1931 | S_apply_attrs_my(pTHX_ HV *stash, OP *target, OP *attrs, OP **imopsp) | |
1932 | { | |
97aff369 | 1933 | dVAR; |
95f0a2f1 SB |
1934 | OP *pack, *imop, *arg; |
1935 | SV *meth, *stashsv; | |
1936 | ||
7918f24d NC |
1937 | PERL_ARGS_ASSERT_APPLY_ATTRS_MY; |
1938 | ||
95f0a2f1 SB |
1939 | if (!attrs) |
1940 | return; | |
1941 | ||
1942 | assert(target->op_type == OP_PADSV || | |
1943 | target->op_type == OP_PADHV || | |
1944 | target->op_type == OP_PADAV); | |
1945 | ||
1946 | /* Ensure that attributes.pm is loaded. */ | |
dd2155a4 | 1947 | apply_attrs(stash, PAD_SV(target->op_targ), attrs, TRUE); |
95f0a2f1 SB |
1948 | |
1949 | /* Need package name for method call. */ | |
6136c704 | 1950 | pack = newSVOP(OP_CONST, 0, newSVpvs(ATTRSMODULE)); |
95f0a2f1 SB |
1951 | |
1952 | /* Build up the real arg-list. */ | |
5aaec2b4 NC |
1953 | stashsv = stash ? newSVhek(HvNAME_HEK(stash)) : &PL_sv_no; |
1954 | ||
95f0a2f1 SB |
1955 | arg = newOP(OP_PADSV, 0); |
1956 | arg->op_targ = target->op_targ; | |
1957 | arg = prepend_elem(OP_LIST, | |
1958 | newSVOP(OP_CONST, 0, stashsv), | |
1959 | prepend_elem(OP_LIST, | |
1960 | newUNOP(OP_REFGEN, 0, | |
1961 | mod(arg, OP_REFGEN)), | |
1962 | dup_attrlist(attrs))); | |
1963 | ||
1964 | /* Fake up a method call to import */ | |
18916d0d | 1965 | meth = newSVpvs_share("import"); |
95f0a2f1 SB |
1966 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL|OPf_WANT_VOID, |
1967 | append_elem(OP_LIST, | |
1968 | prepend_elem(OP_LIST, pack, list(arg)), | |
1969 | newSVOP(OP_METHOD_NAMED, 0, meth))); | |
1970 | imop->op_private |= OPpENTERSUB_NOMOD; | |
1971 | ||
1972 | /* Combine the ops. */ | |
1973 | *imopsp = append_elem(OP_LIST, *imopsp, imop); | |
1974 | } | |
1975 | ||
1976 | /* | |
1977 | =notfor apidoc apply_attrs_string | |
1978 | ||
1979 | Attempts to apply a list of attributes specified by the C<attrstr> and | |
1980 | C<len> arguments to the subroutine identified by the C<cv> argument which | |
1981 | is expected to be associated with the package identified by the C<stashpv> | |
1982 | argument (see L<attributes>). It gets this wrong, though, in that it | |
1983 | does not correctly identify the boundaries of the individual attribute | |
1984 | specifications within C<attrstr>. This is not really intended for the | |
1985 | public API, but has to be listed here for systems such as AIX which | |
1986 | need an explicit export list for symbols. (It's called from XS code | |
1987 | in support of the C<ATTRS:> keyword from F<xsubpp>.) Patches to fix it | |
1988 | to respect attribute syntax properly would be welcome. | |
1989 | ||
1990 | =cut | |
1991 | */ | |
1992 | ||
be3174d2 | 1993 | void |
6867be6d AL |
1994 | Perl_apply_attrs_string(pTHX_ const char *stashpv, CV *cv, |
1995 | const char *attrstr, STRLEN len) | |
be3174d2 | 1996 | { |
5f66b61c | 1997 | OP *attrs = NULL; |
be3174d2 | 1998 | |
7918f24d NC |
1999 | PERL_ARGS_ASSERT_APPLY_ATTRS_STRING; |
2000 | ||
be3174d2 GS |
2001 | if (!len) { |
2002 | len = strlen(attrstr); | |
2003 | } | |
2004 | ||
2005 | while (len) { | |
2006 | for (; isSPACE(*attrstr) && len; --len, ++attrstr) ; | |
2007 | if (len) { | |
890ce7af | 2008 | const char * const sstr = attrstr; |
be3174d2 GS |
2009 | for (; !isSPACE(*attrstr) && len; --len, ++attrstr) ; |
2010 | attrs = append_elem(OP_LIST, attrs, | |
2011 | newSVOP(OP_CONST, 0, | |
2012 | newSVpvn(sstr, attrstr-sstr))); | |
2013 | } | |
2014 | } | |
2015 | ||
2016 | Perl_load_module(aTHX_ PERL_LOADMOD_IMPORT_OPS, | |
6136c704 | 2017 | newSVpvs(ATTRSMODULE), |
a0714e2c | 2018 | NULL, prepend_elem(OP_LIST, |
be3174d2 GS |
2019 | newSVOP(OP_CONST, 0, newSVpv(stashpv,0)), |
2020 | prepend_elem(OP_LIST, | |
2021 | newSVOP(OP_CONST, 0, | |
ad64d0ec | 2022 | newRV(MUTABLE_SV(cv))), |
be3174d2 GS |
2023 | attrs))); |
2024 | } | |
2025 | ||
09bef843 | 2026 | STATIC OP * |
95f0a2f1 | 2027 | S_my_kid(pTHX_ OP *o, OP *attrs, OP **imopsp) |
93a17b20 | 2028 | { |
97aff369 | 2029 | dVAR; |
93a17b20 LW |
2030 | I32 type; |
2031 | ||
7918f24d NC |
2032 | PERL_ARGS_ASSERT_MY_KID; |
2033 | ||
13765c85 | 2034 | if (!o || (PL_parser && PL_parser->error_count)) |
11343788 | 2035 | return o; |
93a17b20 | 2036 | |
bc61e325 | 2037 | type = o->op_type; |
eb8433b7 NC |
2038 | if (PL_madskills && type == OP_NULL && o->op_flags & OPf_KIDS) { |
2039 | (void)my_kid(cUNOPo->op_first, attrs, imopsp); | |
2040 | return o; | |
2041 | } | |
2042 | ||
93a17b20 | 2043 | if (type == OP_LIST) { |
6867be6d | 2044 | OP *kid; |
11343788 | 2045 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
95f0a2f1 | 2046 | my_kid(kid, attrs, imopsp); |
eb8433b7 NC |
2047 | } else if (type == OP_UNDEF |
2048 | #ifdef PERL_MAD | |
2049 | || type == OP_STUB | |
2050 | #endif | |
2051 | ) { | |
7766148a | 2052 | return o; |
77ca0c92 LW |
2053 | } else if (type == OP_RV2SV || /* "our" declaration */ |
2054 | type == OP_RV2AV || | |
2055 | type == OP_RV2HV) { /* XXX does this let anything illegal in? */ | |
1ce0b88c | 2056 | if (cUNOPo->op_first->op_type != OP_GV) { /* MJD 20011224 */ |
fab01b8e | 2057 | yyerror(Perl_form(aTHX_ "Can't declare %s in \"%s\"", |
952306ac | 2058 | OP_DESC(o), |
12bd6ede DM |
2059 | PL_parser->in_my == KEY_our |
2060 | ? "our" | |
2061 | : PL_parser->in_my == KEY_state ? "state" : "my")); | |
1ce0b88c | 2062 | } else if (attrs) { |
551405c4 | 2063 | GV * const gv = cGVOPx_gv(cUNOPo->op_first); |
12bd6ede DM |
2064 | PL_parser->in_my = FALSE; |
2065 | PL_parser->in_my_stash = NULL; | |
1ce0b88c RGS |
2066 | apply_attrs(GvSTASH(gv), |
2067 | (type == OP_RV2SV ? GvSV(gv) : | |
ad64d0ec NC |
2068 | type == OP_RV2AV ? MUTABLE_SV(GvAV(gv)) : |
2069 | type == OP_RV2HV ? MUTABLE_SV(GvHV(gv)) : MUTABLE_SV(gv)), | |
1ce0b88c RGS |
2070 | attrs, FALSE); |
2071 | } | |
192587c2 | 2072 | o->op_private |= OPpOUR_INTRO; |
77ca0c92 | 2073 | return o; |
95f0a2f1 SB |
2074 | } |
2075 | else if (type != OP_PADSV && | |
93a17b20 LW |
2076 | type != OP_PADAV && |
2077 | type != OP_PADHV && | |
2078 | type != OP_PUSHMARK) | |
2079 | { | |
eb64745e | 2080 | yyerror(Perl_form(aTHX_ "Can't declare %s in \"%s\"", |
53e06cf0 | 2081 | OP_DESC(o), |
12bd6ede DM |
2082 | PL_parser->in_my == KEY_our |
2083 | ? "our" | |
2084 | : PL_parser->in_my == KEY_state ? "state" : "my")); | |
11343788 | 2085 | return o; |
93a17b20 | 2086 | } |
09bef843 SB |
2087 | else if (attrs && type != OP_PUSHMARK) { |
2088 | HV *stash; | |
09bef843 | 2089 | |
12bd6ede DM |
2090 | PL_parser->in_my = FALSE; |
2091 | PL_parser->in_my_stash = NULL; | |
eb64745e | 2092 | |
09bef843 | 2093 | /* check for C<my Dog $spot> when deciding package */ |
dd2155a4 DM |
2094 | stash = PAD_COMPNAME_TYPE(o->op_targ); |
2095 | if (!stash) | |
09bef843 | 2096 | stash = PL_curstash; |
95f0a2f1 | 2097 | apply_attrs_my(stash, o, attrs, imopsp); |
09bef843 | 2098 | } |
11343788 MB |
2099 | o->op_flags |= OPf_MOD; |
2100 | o->op_private |= OPpLVAL_INTRO; | |
12bd6ede | 2101 | if (PL_parser->in_my == KEY_state) |
952306ac | 2102 | o->op_private |= OPpPAD_STATE; |
11343788 | 2103 | return o; |
93a17b20 LW |
2104 | } |
2105 | ||
2106 | OP * | |
09bef843 SB |
2107 | Perl_my_attrs(pTHX_ OP *o, OP *attrs) |
2108 | { | |
97aff369 | 2109 | dVAR; |
0bd48802 | 2110 | OP *rops; |
95f0a2f1 SB |
2111 | int maybe_scalar = 0; |
2112 | ||
7918f24d NC |
2113 | PERL_ARGS_ASSERT_MY_ATTRS; |
2114 | ||
d2be0de5 | 2115 | /* [perl #17376]: this appears to be premature, and results in code such as |
c754c3d7 | 2116 | C< our(%x); > executing in list mode rather than void mode */ |
d2be0de5 | 2117 | #if 0 |
09bef843 SB |
2118 | if (o->op_flags & OPf_PARENS) |
2119 | list(o); | |
95f0a2f1 SB |
2120 | else |
2121 | maybe_scalar = 1; | |
d2be0de5 YST |
2122 | #else |
2123 | maybe_scalar = 1; | |
2124 | #endif | |
09bef843 SB |
2125 | if (attrs) |
2126 | SAVEFREEOP(attrs); | |
5f66b61c | 2127 | rops = NULL; |
95f0a2f1 SB |
2128 | o = my_kid(o, attrs, &rops); |
2129 | if (rops) { | |
2130 | if (maybe_scalar && o->op_type == OP_PADSV) { | |
2131 | o = scalar(append_list(OP_LIST, (LISTOP*)rops, (LISTOP*)o)); | |
2132 | o->op_private |= OPpLVAL_INTRO; | |
2133 | } | |
2134 | else | |
2135 | o = append_list(OP_LIST, (LISTOP*)o, (LISTOP*)rops); | |
2136 | } | |
12bd6ede DM |
2137 | PL_parser->in_my = FALSE; |
2138 | PL_parser->in_my_stash = NULL; | |
eb64745e | 2139 | return o; |
09bef843 SB |
2140 | } |
2141 | ||
2142 | OP * | |
864dbfa3 | 2143 | Perl_sawparens(pTHX_ OP *o) |
79072805 | 2144 | { |
96a5add6 | 2145 | PERL_UNUSED_CONTEXT; |
79072805 LW |
2146 | if (o) |
2147 | o->op_flags |= OPf_PARENS; | |
2148 | return o; | |
2149 | } | |
2150 | ||
2151 | OP * | |
864dbfa3 | 2152 | Perl_bind_match(pTHX_ I32 type, OP *left, OP *right) |
79072805 | 2153 | { |
11343788 | 2154 | OP *o; |
59f00321 | 2155 | bool ismatchop = 0; |
1496a290 AL |
2156 | const OPCODE ltype = left->op_type; |
2157 | const OPCODE rtype = right->op_type; | |
79072805 | 2158 | |
7918f24d NC |
2159 | PERL_ARGS_ASSERT_BIND_MATCH; |
2160 | ||
1496a290 AL |
2161 | if ( (ltype == OP_RV2AV || ltype == OP_RV2HV || ltype == OP_PADAV |
2162 | || ltype == OP_PADHV) && ckWARN(WARN_MISC)) | |
041457d9 | 2163 | { |
1496a290 | 2164 | const char * const desc |
666ea192 JH |
2165 | = PL_op_desc[(rtype == OP_SUBST || rtype == OP_TRANS) |
2166 | ? (int)rtype : OP_MATCH]; | |
2167 | const char * const sample = ((ltype == OP_RV2AV || ltype == OP_PADAV) | |
2168 | ? "@array" : "%hash"); | |
9014280d | 2169 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
1c846c1f | 2170 | "Applying %s to %s will act on scalar(%s)", |
599cee73 | 2171 | desc, sample, sample); |
2ae324a7 | 2172 | } |
2173 | ||
1496a290 | 2174 | if (rtype == OP_CONST && |
5cc9e5c9 RH |
2175 | cSVOPx(right)->op_private & OPpCONST_BARE && |
2176 | cSVOPx(right)->op_private & OPpCONST_STRICT) | |
2177 | { | |
2178 | no_bareword_allowed(right); | |
2179 | } | |
2180 | ||
1496a290 AL |
2181 | ismatchop = rtype == OP_MATCH || |
2182 | rtype == OP_SUBST || | |
2183 | rtype == OP_TRANS; | |
59f00321 RGS |
2184 | if (ismatchop && right->op_private & OPpTARGET_MY) { |
2185 | right->op_targ = 0; | |
2186 | right->op_private &= ~OPpTARGET_MY; | |
2187 | } | |
2188 | if (!(right->op_flags & OPf_STACKED) && ismatchop) { | |
1496a290 AL |
2189 | OP *newleft; |
2190 | ||
79072805 | 2191 | right->op_flags |= OPf_STACKED; |
1496a290 AL |
2192 | if (rtype != OP_MATCH && |
2193 | ! (rtype == OP_TRANS && | |
6fbb66d6 | 2194 | right->op_private & OPpTRANS_IDENTICAL)) |
1496a290 AL |
2195 | newleft = mod(left, rtype); |
2196 | else | |
2197 | newleft = left; | |
79072805 | 2198 | if (right->op_type == OP_TRANS) |
1496a290 | 2199 | o = newBINOP(OP_NULL, OPf_STACKED, scalar(newleft), right); |
79072805 | 2200 | else |
1496a290 | 2201 | o = prepend_elem(rtype, scalar(newleft), right); |
79072805 | 2202 | if (type == OP_NOT) |
11343788 MB |
2203 | return newUNOP(OP_NOT, 0, scalar(o)); |
2204 | return o; | |
79072805 LW |
2205 | } |
2206 | else | |
2207 | return bind_match(type, left, | |
131b3ad0 | 2208 | pmruntime(newPMOP(OP_MATCH, 0), right, 0)); |
79072805 LW |
2209 | } |
2210 | ||
2211 | OP * | |
864dbfa3 | 2212 | Perl_invert(pTHX_ OP *o) |
79072805 | 2213 | { |
11343788 | 2214 | if (!o) |
1d866c12 | 2215 | return NULL; |
11343788 | 2216 | return newUNOP(OP_NOT, OPf_SPECIAL, scalar(o)); |
79072805 LW |
2217 | } |
2218 | ||
2219 | OP * | |
864dbfa3 | 2220 | Perl_scope(pTHX_ OP *o) |
79072805 | 2221 | { |
27da23d5 | 2222 | dVAR; |
79072805 | 2223 | if (o) { |
3280af22 | 2224 | if (o->op_flags & OPf_PARENS || PERLDB_NOOPT || PL_tainting) { |
463ee0b2 LW |
2225 | o = prepend_elem(OP_LINESEQ, newOP(OP_ENTER, 0), o); |
2226 | o->op_type = OP_LEAVE; | |
22c35a8c | 2227 | o->op_ppaddr = PL_ppaddr[OP_LEAVE]; |
463ee0b2 | 2228 | } |
fdb22418 HS |
2229 | else if (o->op_type == OP_LINESEQ) { |
2230 | OP *kid; | |
2231 | o->op_type = OP_SCOPE; | |
2232 | o->op_ppaddr = PL_ppaddr[OP_SCOPE]; | |
2233 | kid = ((LISTOP*)o)->op_first; | |
59110972 | 2234 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) { |
fdb22418 | 2235 | op_null(kid); |
59110972 RH |
2236 | |
2237 | /* The following deals with things like 'do {1 for 1}' */ | |
2238 | kid = kid->op_sibling; | |
2239 | if (kid && | |
2240 | (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE)) | |
2241 | op_null(kid); | |
2242 | } | |
463ee0b2 | 2243 | } |
fdb22418 | 2244 | else |
5f66b61c | 2245 | o = newLISTOP(OP_SCOPE, 0, o, NULL); |
79072805 LW |
2246 | } |
2247 | return o; | |
2248 | } | |
72dc9ed5 | 2249 | |
a0d0e21e | 2250 | int |
864dbfa3 | 2251 | Perl_block_start(pTHX_ int full) |
79072805 | 2252 | { |
97aff369 | 2253 | dVAR; |
73d840c0 | 2254 | const int retval = PL_savestack_ix; |
dd2155a4 | 2255 | pad_block_start(full); |
b3ac6de7 | 2256 | SAVEHINTS(); |
3280af22 | 2257 | PL_hints &= ~HINT_BLOCK_SCOPE; |
68da3b2f | 2258 | SAVECOMPILEWARNINGS(); |
72dc9ed5 | 2259 | PL_compiling.cop_warnings = DUP_WARNINGS(PL_compiling.cop_warnings); |
a0d0e21e LW |
2260 | return retval; |
2261 | } | |
2262 | ||
2263 | OP* | |
864dbfa3 | 2264 | Perl_block_end(pTHX_ I32 floor, OP *seq) |
a0d0e21e | 2265 | { |
97aff369 | 2266 | dVAR; |
6867be6d | 2267 | const int needblockscope = PL_hints & HINT_BLOCK_SCOPE; |
551405c4 | 2268 | OP* const retval = scalarseq(seq); |
e9818f4e | 2269 | LEAVE_SCOPE(floor); |
623e6609 | 2270 | CopHINTS_set(&PL_compiling, PL_hints); |
a0d0e21e | 2271 | if (needblockscope) |
3280af22 | 2272 | PL_hints |= HINT_BLOCK_SCOPE; /* propagate out */ |
dd2155a4 | 2273 | pad_leavemy(); |
a0d0e21e LW |
2274 | return retval; |
2275 | } | |
2276 | ||
76e3520e | 2277 | STATIC OP * |
cea2e8a9 | 2278 | S_newDEFSVOP(pTHX) |
54b9620d | 2279 | { |
97aff369 | 2280 | dVAR; |
9f7d9405 | 2281 | const PADOFFSET offset = pad_findmy("$_"); |
00b1698f | 2282 | if (offset == NOT_IN_PAD || PAD_COMPNAME_FLAGS_isOUR(offset)) { |
59f00321 RGS |
2283 | return newSVREF(newGVOP(OP_GV, 0, PL_defgv)); |
2284 | } | |
2285 | else { | |
551405c4 | 2286 | OP * const o = newOP(OP_PADSV, 0); |
59f00321 RGS |
2287 | o->op_targ = offset; |
2288 | return o; | |
2289 | } | |
54b9620d MB |
2290 | } |
2291 | ||
a0d0e21e | 2292 | void |
864dbfa3 | 2293 | Perl_newPROG(pTHX_ OP *o) |
a0d0e21e | 2294 | { |
97aff369 | 2295 | dVAR; |
7918f24d NC |
2296 | |
2297 | PERL_ARGS_ASSERT_NEWPROG; | |
2298 | ||
3280af22 | 2299 | if (PL_in_eval) { |
b295d113 TH |
2300 | if (PL_eval_root) |
2301 | return; | |
faef0170 HS |
2302 | PL_eval_root = newUNOP(OP_LEAVEEVAL, |
2303 | ((PL_in_eval & EVAL_KEEPERR) | |
2304 | ? OPf_SPECIAL : 0), o); | |
3280af22 | 2305 | PL_eval_start = linklist(PL_eval_root); |
7934575e GS |
2306 | PL_eval_root->op_private |= OPpREFCOUNTED; |
2307 | OpREFCNT_set(PL_eval_root, 1); | |
3280af22 | 2308 | PL_eval_root->op_next = 0; |
a2efc822 | 2309 | CALL_PEEP(PL_eval_start); |
a0d0e21e LW |
2310 | } |
2311 | else { | |
6be89cf9 AE |
2312 | if (o->op_type == OP_STUB) { |
2313 | PL_comppad_name = 0; | |
2314 | PL_compcv = 0; | |
d2c837a0 | 2315 | S_op_destroy(aTHX_ o); |
a0d0e21e | 2316 | return; |
6be89cf9 | 2317 | } |
3280af22 NIS |
2318 | PL_main_root = scope(sawparens(scalarvoid(o))); |
2319 | PL_curcop = &PL_compiling; | |
2320 | PL_main_start = LINKLIST(PL_main_root); | |
7934575e GS |
2321 | PL_main_root->op_private |= OPpREFCOUNTED; |
2322 | OpREFCNT_set(PL_main_root, 1); | |
3280af22 | 2323 | PL_main_root->op_next = 0; |
a2efc822 | 2324 | CALL_PEEP(PL_main_start); |
3280af22 | 2325 | PL_compcv = 0; |
3841441e | 2326 | |
4fdae800 | 2327 | /* Register with debugger */ |
84902520 | 2328 | if (PERLDB_INTER) { |
b96d8cd9 | 2329 | CV * const cv = get_cvs("DB::postponed", 0); |
3841441e CS |
2330 | if (cv) { |
2331 | dSP; | |
924508f0 | 2332 | PUSHMARK(SP); |
ad64d0ec | 2333 | XPUSHs(MUTABLE_SV(CopFILEGV(&PL_compiling))); |
3841441e | 2334 | PUTBACK; |
ad64d0ec | 2335 | call_sv(MUTABLE_SV(cv), G_DISCARD); |
3841441e CS |
2336 | } |
2337 | } | |
79072805 | 2338 | } |
79072805 LW |
2339 | } |
2340 | ||
2341 | OP * | |
864dbfa3 | 2342 | Perl_localize(pTHX_ OP *o, I32 lex) |
79072805 | 2343 | { |
97aff369 | 2344 | dVAR; |
7918f24d NC |
2345 | |
2346 | PERL_ARGS_ASSERT_LOCALIZE; | |
2347 | ||
79072805 | 2348 | if (o->op_flags & OPf_PARENS) |
d2be0de5 YST |
2349 | /* [perl #17376]: this appears to be premature, and results in code such as |
2350 | C< our(%x); > executing in list mode rather than void mode */ | |
2351 | #if 0 | |
79072805 | 2352 | list(o); |
d2be0de5 | 2353 | #else |
6f207bd3 | 2354 | NOOP; |
d2be0de5 | 2355 | #endif |
8990e307 | 2356 | else { |
f06b5848 DM |
2357 | if ( PL_parser->bufptr > PL_parser->oldbufptr |
2358 | && PL_parser->bufptr[-1] == ',' | |
041457d9 | 2359 | && ckWARN(WARN_PARENTHESIS)) |
64420d0d | 2360 | { |
f06b5848 | 2361 | char *s = PL_parser->bufptr; |
bac662ee | 2362 | bool sigil = FALSE; |
64420d0d | 2363 | |
8473848f | 2364 | /* some heuristics to detect a potential error */ |
bac662ee | 2365 | while (*s && (strchr(", \t\n", *s))) |
64420d0d | 2366 | s++; |
8473848f | 2367 | |
bac662ee TS |
2368 | while (1) { |
2369 | if (*s && strchr("@$%*", *s) && *++s | |
2370 | && (isALNUM(*s) || UTF8_IS_CONTINUED(*s))) { | |
2371 | s++; | |
2372 | sigil = TRUE; | |
2373 | while (*s && (isALNUM(*s) || UTF8_IS_CONTINUED(*s))) | |
2374 | s++; | |
2375 | while (*s && (strchr(", \t\n", *s))) | |
2376 | s++; | |
2377 | } | |
2378 | else | |
2379 | break; | |
2380 | } | |
2381 | if (sigil && (*s == ';' || *s == '=')) { | |
2382 | Perl_warner(aTHX_ packWARN(WARN_PARENTHESIS), | |
8473848f | 2383 | "Parentheses missing around \"%s\" list", |
12bd6ede DM |
2384 | lex |
2385 | ? (PL_parser->in_my == KEY_our | |
2386 | ? "our" | |
2387 | : PL_parser->in_my == KEY_state | |
2388 | ? "state" | |
2389 | : "my") | |
2390 | : "local"); | |
8473848f | 2391 | } |
8990e307 LW |
2392 | } |
2393 | } | |
93a17b20 | 2394 | if (lex) |
eb64745e | 2395 | o = my(o); |
93a17b20 | 2396 | else |
eb64745e | 2397 | o = mod(o, OP_NULL); /* a bit kludgey */ |
12bd6ede DM |
2398 | PL_parser->in_my = FALSE; |
2399 | PL_parser->in_my_stash = NULL; | |
eb64745e | 2400 | return o; |
79072805 LW |
2401 | } |
2402 | ||
2403 | OP * | |
864dbfa3 | 2404 | Perl_jmaybe(pTHX_ OP *o) |
79072805 | 2405 | { |
7918f24d NC |
2406 | PERL_ARGS_ASSERT_JMAYBE; |
2407 | ||
79072805 | 2408 | if (o->op_type == OP_LIST) { |
fafc274c | 2409 | OP * const o2 |
d4c19fe8 | 2410 | = newSVREF(newGVOP(OP_GV, 0, gv_fetchpvs(";", GV_ADD|GV_NOTQUAL, SVt_PV))); |
554b3eca | 2411 | o = convert(OP_JOIN, 0, prepend_elem(OP_LIST, o2, o)); |
79072805 LW |
2412 | } |
2413 | return o; | |
2414 | } | |
2415 | ||
1f676739 | 2416 | static OP * |
b7783a12 | 2417 | S_fold_constants(pTHX_ register OP *o) |
79072805 | 2418 | { |
27da23d5 | 2419 | dVAR; |
001d637e | 2420 | register OP * VOL curop; |
eb8433b7 | 2421 | OP *newop; |
8ea43dc8 | 2422 | VOL I32 type = o->op_type; |
e3cbe32f | 2423 | SV * VOL sv = NULL; |
b7f7fd0b NC |
2424 | int ret = 0; |
2425 | I32 oldscope; | |
2426 | OP *old_next; | |
5f2d9966 DM |
2427 | SV * const oldwarnhook = PL_warnhook; |
2428 | SV * const olddiehook = PL_diehook; | |
c427f4d2 | 2429 | COP not_compiling; |
b7f7fd0b | 2430 | dJMPENV; |
79072805 | 2431 | |
7918f24d NC |
2432 | PERL_ARGS_ASSERT_FOLD_CONSTANTS; |
2433 | ||
22c35a8c | 2434 | if (PL_opargs[type] & OA_RETSCALAR) |
79072805 | 2435 | scalar(o); |
b162f9ea | 2436 | if (PL_opargs[type] & OA_TARGET && !o->op_targ) |
ed6116ce | 2437 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 | 2438 | |
eac055e9 GS |
2439 | /* integerize op, unless it happens to be C<-foo>. |
2440 | * XXX should pp_i_negate() do magic string negation instead? */ | |
2441 | if ((PL_opargs[type] & OA_OTHERINT) && (PL_hints & HINT_INTEGER) | |
2442 | && !(type == OP_NEGATE && cUNOPo->op_first->op_type == OP_CONST | |
2443 | && (cUNOPo->op_first->op_private & OPpCONST_BARE))) | |
2444 | { | |
22c35a8c | 2445 | o->op_ppaddr = PL_ppaddr[type = ++(o->op_type)]; |
eac055e9 | 2446 | } |
85e6fe83 | 2447 | |
22c35a8c | 2448 | if (!(PL_opargs[type] & OA_FOLDCONST)) |
79072805 LW |
2449 | goto nope; |
2450 | ||
de939608 | 2451 | switch (type) { |
7a52d87a GS |
2452 | case OP_NEGATE: |
2453 | /* XXX might want a ck_negate() for this */ | |
2454 | cUNOPo->op_first->op_private &= ~OPpCONST_STRICT; | |
2455 | break; | |
de939608 CS |
2456 | case OP_UCFIRST: |
2457 | case OP_LCFIRST: | |
2458 | case OP_UC: | |
2459 | case OP_LC: | |
69dcf70c MB |
2460 | case OP_SLT: |
2461 | case OP_SGT: | |
2462 | case OP_SLE: | |
2463 | case OP_SGE: | |
2464 | case OP_SCMP: | |
2de3dbcc JH |
2465 | /* XXX what about the numeric ops? */ |
2466 | if (PL_hints & HINT_LOCALE) | |
de939608 | 2467 | goto nope; |
553e7bb0 | 2468 | break; |
de939608 CS |
2469 | } |
2470 | ||
13765c85 | 2471 | if (PL_parser && PL_parser->error_count) |
a0d0e21e LW |
2472 | goto nope; /* Don't try to run w/ errors */ |
2473 | ||
79072805 | 2474 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
1496a290 AL |
2475 | const OPCODE type = curop->op_type; |
2476 | if ((type != OP_CONST || (curop->op_private & OPpCONST_BARE)) && | |
2477 | type != OP_LIST && | |
2478 | type != OP_SCALAR && | |
2479 | type != OP_NULL && | |
2480 | type != OP_PUSHMARK) | |
7a52d87a | 2481 | { |
79072805 LW |
2482 | goto nope; |
2483 | } | |
2484 | } | |
2485 | ||
2486 | curop = LINKLIST(o); | |
b7f7fd0b | 2487 | old_next = o->op_next; |
79072805 | 2488 | o->op_next = 0; |
533c011a | 2489 | PL_op = curop; |
b7f7fd0b NC |
2490 | |
2491 | oldscope = PL_scopestack_ix; | |
edb2152a | 2492 | create_eval_scope(G_FAKINGEVAL); |
b7f7fd0b | 2493 | |
c427f4d2 NC |
2494 | /* Verify that we don't need to save it: */ |
2495 | assert(PL_curcop == &PL_compiling); | |
2496 | StructCopy(&PL_compiling, ¬_compiling, COP); | |
2497 | PL_curcop = ¬_compiling; | |
2498 | /* The above ensures that we run with all the correct hints of the | |
2499 | currently compiling COP, but that IN_PERL_RUNTIME is not true. */ | |
2500 | assert(IN_PERL_RUNTIME); | |
5f2d9966 DM |
2501 | PL_warnhook = PERL_WARNHOOK_FATAL; |
2502 | PL_diehook = NULL; | |
b7f7fd0b NC |
2503 | JMPENV_PUSH(ret); |
2504 | ||
2505 | switch (ret) { | |
2506 | case 0: | |
2507 | CALLRUNOPS(aTHX); | |
2508 | sv = *(PL_stack_sp--); | |
2509 | if (o->op_targ && sv == PAD_SV(o->op_targ)) /* grab pad temp? */ | |
2510 | pad_swipe(o->op_targ, FALSE); | |
2511 | else if (SvTEMP(sv)) { /* grab mortal temp? */ | |
2512 | SvREFCNT_inc_simple_void(sv); | |
2513 | SvTEMP_off(sv); | |
2514 | } | |
2515 | break; | |
2516 | case 3: | |
2517 | /* Something tried to die. Abandon constant folding. */ | |
2518 | /* Pretend the error never happened. */ | |
ab69dbc2 | 2519 | CLEAR_ERRSV(); |
b7f7fd0b NC |
2520 | o->op_next = old_next; |
2521 | break; | |
2522 | default: | |
2523 | JMPENV_POP; | |
5f2d9966 DM |
2524 | /* Don't expect 1 (setjmp failed) or 2 (something called my_exit) */ |
2525 | PL_warnhook = oldwarnhook; | |
2526 | PL_diehook = olddiehook; | |
2527 | /* XXX note that this croak may fail as we've already blown away | |
2528 | * the stack - eg any nested evals */ | |
b7f7fd0b NC |
2529 | Perl_croak(aTHX_ "panic: fold_constants JMPENV_PUSH returned %d", ret); |
2530 | } | |
b7f7fd0b | 2531 | JMPENV_POP; |
5f2d9966 DM |
2532 | PL_warnhook = oldwarnhook; |
2533 | PL_diehook = olddiehook; | |
c427f4d2 | 2534 | PL_curcop = &PL_compiling; |
edb2152a NC |
2535 | |
2536 | if (PL_scopestack_ix > oldscope) | |
2537 | delete_eval_scope(); | |
eb8433b7 | 2538 | |
b7f7fd0b NC |
2539 | if (ret) |
2540 | goto nope; | |
2541 | ||
eb8433b7 | 2542 | #ifndef PERL_MAD |
79072805 | 2543 | op_free(o); |
eb8433b7 | 2544 | #endif |
de5e01c2 | 2545 | assert(sv); |
79072805 | 2546 | if (type == OP_RV2GV) |
159b6efe | 2547 | newop = newGVOP(OP_GV, 0, MUTABLE_GV(sv)); |
eb8433b7 | 2548 | else |
ad64d0ec | 2549 | newop = newSVOP(OP_CONST, 0, MUTABLE_SV(sv)); |
eb8433b7 NC |
2550 | op_getmad(o,newop,'f'); |
2551 | return newop; | |
aeea060c | 2552 | |
b7f7fd0b | 2553 | nope: |
79072805 LW |
2554 | return o; |
2555 | } | |
2556 | ||
1f676739 | 2557 | static OP * |
b7783a12 | 2558 | S_gen_constant_list(pTHX_ register OP *o) |
79072805 | 2559 | { |
27da23d5 | 2560 | dVAR; |
79072805 | 2561 | register OP *curop; |
6867be6d | 2562 | const I32 oldtmps_floor = PL_tmps_floor; |
79072805 | 2563 | |
a0d0e21e | 2564 | list(o); |
13765c85 | 2565 | if (PL_parser && PL_parser->error_count) |
a0d0e21e LW |
2566 | return o; /* Don't attempt to run with errors */ |
2567 | ||
533c011a | 2568 | PL_op = curop = LINKLIST(o); |
a0d0e21e | 2569 | o->op_next = 0; |
a2efc822 | 2570 | CALL_PEEP(curop); |
cea2e8a9 GS |
2571 | pp_pushmark(); |
2572 | CALLRUNOPS(aTHX); | |
533c011a | 2573 | PL_op = curop; |
78c72037 NC |
2574 | assert (!(curop->op_flags & OPf_SPECIAL)); |
2575 | assert(curop->op_type == OP_RANGE); | |
cea2e8a9 | 2576 | pp_anonlist(); |
3280af22 | 2577 | PL_tmps_floor = oldtmps_floor; |
79072805 LW |
2578 | |
2579 | o->op_type = OP_RV2AV; | |
22c35a8c | 2580 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
fb53bbb2 SG |
2581 | o->op_flags &= ~OPf_REF; /* treat \(1..2) like an ordinary list */ |
2582 | o->op_flags |= OPf_PARENS; /* and flatten \(1..2,3) */ | |
2814eb74 | 2583 | o->op_opt = 0; /* needs to be revisited in peep() */ |
79072805 | 2584 | curop = ((UNOP*)o)->op_first; |
b37c2d43 | 2585 | ((UNOP*)o)->op_first = newSVOP(OP_CONST, 0, SvREFCNT_inc_NN(*PL_stack_sp--)); |
eb8433b7 NC |
2586 | #ifdef PERL_MAD |
2587 | op_getmad(curop,o,'O'); | |
2588 | #else | |
79072805 | 2589 | op_free(curop); |
eb8433b7 | 2590 | #endif |
79072805 LW |
2591 | linklist(o); |
2592 | return list(o); | |
2593 | } | |
2594 | ||
2595 | OP * | |
864dbfa3 | 2596 | Perl_convert(pTHX_ I32 type, I32 flags, OP *o) |
79072805 | 2597 | { |
27da23d5 | 2598 | dVAR; |
11343788 | 2599 | if (!o || o->op_type != OP_LIST) |
5f66b61c | 2600 | o = newLISTOP(OP_LIST, 0, o, NULL); |
748a9306 | 2601 | else |
5dc0d613 | 2602 | o->op_flags &= ~OPf_WANT; |
79072805 | 2603 | |
22c35a8c | 2604 | if (!(PL_opargs[type] & OA_MARK)) |
93c66552 | 2605 | op_null(cLISTOPo->op_first); |
8990e307 | 2606 | |
eb160463 | 2607 | o->op_type = (OPCODE)type; |
22c35a8c | 2608 | o->op_ppaddr = PL_ppaddr[type]; |
11343788 | 2609 | o->op_flags |= flags; |
79072805 | 2610 | |
11343788 | 2611 | o = CHECKOP(type, o); |
fe2774ed | 2612 | if (o->op_type != (unsigned)type) |
11343788 | 2613 | return o; |
79072805 | 2614 | |
11343788 | 2615 | return fold_constants(o); |
79072805 LW |
2616 | } |
2617 | ||
2618 | /* List constructors */ | |
2619 | ||
2620 | OP * | |
864dbfa3 | 2621 | Perl_append_elem(pTHX_ I32 type, OP *first, OP *last) |
79072805 LW |
2622 | { |
2623 | if (!first) | |
2624 | return last; | |
8990e307 LW |
2625 | |
2626 | if (!last) | |
79072805 | 2627 | return first; |
8990e307 | 2628 | |
fe2774ed | 2629 | if (first->op_type != (unsigned)type |
155aba94 GS |
2630 | || (type == OP_LIST && (first->op_flags & OPf_PARENS))) |
2631 | { | |
2632 | return newLISTOP(type, 0, first, last); | |
2633 | } | |
79072805 | 2634 | |
a0d0e21e LW |
2635 | if (first->op_flags & OPf_KIDS) |
2636 | ((LISTOP*)first)->op_last->op_sibling = last; | |
2637 | else { | |
2638 | first->op_flags |= OPf_KIDS; | |
2639 | ((LISTOP*)first)->op_first = last; | |
2640 | } | |
2641 | ((LISTOP*)first)->op_last = last; | |
a0d0e21e | 2642 | return first; |
79072805 LW |
2643 | } |
2644 | ||
2645 | OP * | |
864dbfa3 | 2646 | Perl_append_list(pTHX_ I32 type, LISTOP *first, LISTOP *last) |
79072805 LW |
2647 | { |
2648 | if (!first) | |
2649 | return (OP*)last; | |
8990e307 LW |
2650 | |
2651 | if (!last) | |
79072805 | 2652 | return (OP*)first; |
8990e307 | 2653 | |
fe2774ed | 2654 | if (first->op_type != (unsigned)type) |
79072805 | 2655 | return prepend_elem(type, (OP*)first, (OP*)last); |
8990e307 | 2656 | |
fe2774ed | 2657 | if (last->op_type != (unsigned)type) |
79072805 LW |
2658 | return append_elem(type, (OP*)first, (OP*)last); |
2659 | ||
2660 | first->op_last->op_sibling = last->op_first; | |
2661 | first->op_last = last->op_last; | |
117dada2 | 2662 | first->op_flags |= (last->op_flags & OPf_KIDS); |
1c846c1f | 2663 | |
eb8433b7 NC |
2664 | #ifdef PERL_MAD |
2665 | if (last->op_first && first->op_madprop) { | |
2666 | MADPROP *mp = last->op_first->op_madprop; | |
2667 | if (mp) { | |
2668 | while (mp->mad_next) | |
2669 | mp = mp->mad_next; | |
2670 | mp->mad_next = first->op_madprop; | |
2671 | } | |
2672 | else { | |
2673 | last->op_first->op_madprop = first->op_madprop; | |
2674 | } | |
2675 | } | |
2676 | first->op_madprop = last->op_madprop; | |
2677 | last->op_madprop = 0; | |
2678 | #endif | |
2679 | ||
d2c837a0 | 2680 | S_op_destroy(aTHX_ (OP*)last); |
238a4c30 | 2681 | |
79072805 LW |
2682 | return (OP*)first; |
2683 | } | |
2684 | ||
2685 | OP * | |
864dbfa3 | 2686 | Perl_prepend_elem(pTHX_ I32 type, OP *first, OP *last) |
79072805 LW |
2687 | { |
2688 | if (!first) | |
2689 | return last; | |
8990e307 LW |
2690 | |
2691 | if (!last) | |
79072805 | 2692 | return first; |
8990e307 | 2693 | |
fe2774ed | 2694 | if (last->op_type == (unsigned)type) { |
8990e307 LW |
2695 | if (type == OP_LIST) { /* already a PUSHMARK there */ |
2696 | first->op_sibling = ((LISTOP*)last)->op_first->op_sibling; | |
2697 | ((LISTOP*)last)->op_first->op_sibling = first; | |
36a5d4ba DC |
2698 | if (!(first->op_flags & OPf_PARENS)) |
2699 | last->op_flags &= ~OPf_PARENS; | |
8990e307 LW |
2700 | } |
2701 | else { | |
2702 | if (!(last->op_flags & OPf_KIDS)) { | |
2703 | ((LISTOP*)last)->op_last = first; | |
2704 | last->op_flags |= OPf_KIDS; | |
2705 | } | |
2706 | first->op_sibling = ((LISTOP*)last)->op_first; | |
2707 | ((LISTOP*)last)->op_first = first; | |
79072805 | 2708 | } |
117dada2 | 2709 | last->op_flags |= OPf_KIDS; |
79072805 LW |
2710 | return last; |
2711 | } | |
2712 | ||
2713 | return newLISTOP(type, 0, first, last); | |
2714 | } | |
2715 | ||
2716 | /* Constructors */ | |
2717 | ||
eb8433b7 NC |
2718 | #ifdef PERL_MAD |
2719 | ||
2720 | TOKEN * | |
2721 | Perl_newTOKEN(pTHX_ I32 optype, YYSTYPE lval, MADPROP* madprop) | |
2722 | { | |
2723 | TOKEN *tk; | |
99129197 | 2724 | Newxz(tk, 1, TOKEN); |
eb8433b7 NC |
2725 | tk->tk_type = (OPCODE)optype; |
2726 | tk->tk_type = 12345; | |
2727 | tk->tk_lval = lval; | |
2728 | tk->tk_mad = madprop; | |
2729 | return tk; | |
2730 | } | |
2731 | ||
2732 | void | |
2733 | Perl_token_free(pTHX_ TOKEN* tk) | |
2734 | { | |
7918f24d NC |
2735 | PERL_ARGS_ASSERT_TOKEN_FREE; |
2736 | ||
eb8433b7 NC |
2737 | if (tk->tk_type != 12345) |
2738 | return; | |
2739 | mad_free(tk->tk_mad); | |
2740 | Safefree(tk); | |
2741 | } | |
2742 | ||
2743 | void | |
2744 | Perl_token_getmad(pTHX_ TOKEN* tk, OP* o, char slot) | |
2745 | { | |
2746 | MADPROP* mp; | |
2747 | MADPROP* tm; | |
7918f24d NC |
2748 | |
2749 | PERL_ARGS_ASSERT_TOKEN_GETMAD; | |
2750 | ||
eb8433b7 NC |
2751 | if (tk->tk_type != 12345) { |
2752 | Perl_warner(aTHX_ packWARN(WARN_MISC), | |
2753 | "Invalid TOKEN object ignored"); | |
2754 | return; | |
2755 | } | |
2756 | tm = tk->tk_mad; | |
2757 | if (!tm) | |
2758 | return; | |
2759 | ||
2760 | /* faked up qw list? */ | |
2761 | if (slot == '(' && | |
2762 | tm->mad_type == MAD_SV && | |
d503a9ba | 2763 | SvPVX((SV *)tm->mad_val)[0] == 'q') |
eb8433b7 NC |
2764 | slot = 'x'; |
2765 | ||
2766 | if (o) { | |
2767 | mp = o->op_madprop; | |
2768 | if (mp) { | |
2769 | for (;;) { | |
2770 | /* pretend constant fold didn't happen? */ | |
2771 | if (mp->mad_key == 'f' && | |
2772 | (o->op_type == OP_CONST || | |
2773 | o->op_type == OP_GV) ) | |
2774 | { | |
2775 | token_getmad(tk,(OP*)mp->mad_val,slot); | |
2776 | return; | |
2777 | } | |
2778 | if (!mp->mad_next) | |
2779 | break; | |
2780 | mp = mp->mad_next; | |
2781 | } | |
2782 | mp->mad_next = tm; | |
2783 | mp = mp->mad_next; | |
2784 | } | |
2785 | else { | |
2786 | o->op_madprop = tm; | |
2787 | mp = o->op_madprop; | |
2788 | } | |
2789 | if (mp->mad_key == 'X') | |
2790 | mp->mad_key = slot; /* just change the first one */ | |
2791 | ||
2792 | tk->tk_mad = 0; | |
2793 | } | |
2794 | else | |
2795 | mad_free(tm); | |
2796 | Safefree(tk); | |
2797 | } | |
2798 | ||
2799 | void | |
2800 | Perl_op_getmad_weak(pTHX_ OP* from, OP* o, char slot) | |
2801 | { | |
2802 | MADPROP* mp; | |
2803 | if (!from) | |
2804 | return; | |
2805 | if (o) { | |
2806 | mp = o->op_madprop; | |
2807 | if (mp) { | |
2808 | for (;;) { | |
2809 | /* pretend constant fold didn't happen? */ | |
2810 | if (mp->mad_key == 'f' && | |
2811 | (o->op_type == OP_CONST || | |
2812 | o->op_type == OP_GV) ) | |
2813 | { | |
2814 | op_getmad(from,(OP*)mp->mad_val,slot); | |
2815 | return; | |
2816 | } | |
2817 | if (!mp->mad_next) | |
2818 | break; | |
2819 | mp = mp->mad_next; | |
2820 | } | |
2821 | mp->mad_next = newMADPROP(slot,MAD_OP,from,0); | |
2822 | } | |
2823 | else { | |
2824 | o->op_madprop = newMADPROP(slot,MAD_OP,from,0); | |
2825 | } | |
2826 | } | |
2827 | } | |
2828 | ||
2829 | void | |
2830 | Perl_op_getmad(pTHX_ OP* from, OP* o, char slot) | |
2831 | { | |
2832 | MADPROP* mp; | |
2833 | if (!from) | |
2834 | return; | |
2835 | if (o) { | |
2836 | mp = o->op_madprop; | |
2837 | if (mp) { | |
2838 | for (;;) { | |
2839 | /* pretend constant fold didn't happen? */ | |
2840 | if (mp->mad_key == 'f' && | |
2841 | (o->op_type == OP_CONST || | |
2842 | o->op_type == OP_GV) ) | |
2843 | { | |
2844 | op_getmad(from,(OP*)mp->mad_val,slot); | |
2845 | return; | |
2846 | } | |
2847 | if (!mp->mad_next) | |
2848 | break; | |
2849 | mp = mp->mad_next; | |
2850 | } | |
2851 | mp->mad_next = newMADPROP(slot,MAD_OP,from,1); | |
2852 | } | |
2853 | else { | |
2854 | o->op_madprop = newMADPROP(slot,MAD_OP,from,1); | |
2855 | } | |
2856 | } | |
2857 | else { | |
99129197 NC |
2858 | PerlIO_printf(PerlIO_stderr(), |
2859 | "DESTROYING op = %0"UVxf"\n", PTR2UV(from)); | |
eb8433b7 NC |
2860 | op_free(from); |
2861 | } | |
2862 | } | |
2863 | ||
2864 | void | |
2865 | Perl_prepend_madprops(pTHX_ MADPROP* mp, OP* o, char slot) | |
2866 | { | |
2867 | MADPROP* tm; | |
2868 | if (!mp || !o) | |
2869 | return; | |
2870 | if (slot) | |
2871 | mp->mad_key = slot; | |
2872 | tm = o->op_madprop; | |
2873 | o->op_madprop = mp; | |
2874 | for (;;) { | |
2875 | if (!mp->mad_next) | |
2876 | break; | |
2877 | mp = mp->mad_next; | |
2878 | } | |
2879 | mp->mad_next = tm; | |
2880 | } | |
2881 | ||
2882 | void | |
2883 | Perl_append_madprops(pTHX_ MADPROP* tm, OP* o, char slot) | |
2884 | { | |
2885 | if (!o) | |
2886 | return; | |
2887 | addmad(tm, &(o->op_madprop), slot); | |
2888 | } | |
2889 | ||
2890 | void | |
2891 | Perl_addmad(pTHX_ MADPROP* tm, MADPROP** root, char slot) | |
2892 | { | |
2893 | MADPROP* mp; | |
2894 | if (!tm || !root) | |
2895 | return; | |
2896 | if (slot) | |
2897 | tm->mad_key = slot; | |
2898 | mp = *root; | |
2899 | if (!mp) { | |
2900 | *root = tm; | |
2901 | return; | |
2902 | } | |
2903 | for (;;) { | |
2904 | if (!mp->mad_next) | |
2905 | break; | |
2906 | mp = mp->mad_next; | |
2907 | } | |
2908 | mp->mad_next = tm; | |
2909 | } | |
2910 | ||
2911 | MADPROP * | |
2912 | Perl_newMADsv(pTHX_ char key, SV* sv) | |
2913 | { | |
7918f24d NC |
2914 | PERL_ARGS_ASSERT_NEWMADSV; |
2915 | ||
eb8433b7 NC |
2916 | return newMADPROP(key, MAD_SV, sv, 0); |
2917 | } | |
2918 | ||
2919 | MADPROP * | |
d503a9ba | 2920 | Perl_newMADPROP(pTHX_ char key, char type, void* val, I32 vlen) |
eb8433b7 NC |
2921 | { |
2922 | MADPROP *mp; | |
99129197 | 2923 | Newxz(mp, 1, MADPROP); |
eb8433b7 NC |
2924 | mp->mad_next = 0; |
2925 | mp->mad_key = key; | |
2926 | mp->mad_vlen = vlen; | |
2927 | mp->mad_type = type; | |
2928 | mp->mad_val = val; | |
2929 | /* PerlIO_printf(PerlIO_stderr(), "NEW mp = %0x\n", mp); */ | |
2930 | return mp; | |
2931 | } | |
2932 | ||
2933 | void | |
2934 | Perl_mad_free(pTHX_ MADPROP* mp) | |
2935 | { | |
2936 | /* PerlIO_printf(PerlIO_stderr(), "FREE mp = %0x\n", mp); */ | |
2937 | if (!mp) | |
2938 | return; | |
2939 | if (mp->mad_next) | |
2940 | mad_free(mp->mad_next); | |
bc177e6b | 2941 | /* if (PL_parser && PL_parser->lex_state != LEX_NOTPARSING && mp->mad_vlen) |
eb8433b7 NC |
2942 | PerlIO_printf(PerlIO_stderr(), "DESTROYING '%c'=<%s>\n", mp->mad_key & 255, mp->mad_val); */ |
2943 | switch (mp->mad_type) { | |
2944 | case MAD_NULL: | |
2945 | break; | |
2946 | case MAD_PV: | |
2947 | Safefree((char*)mp->mad_val); | |
2948 | break; | |
2949 | case MAD_OP: | |
2950 | if (mp->mad_vlen) /* vlen holds "strong/weak" boolean */ | |
2951 | op_free((OP*)mp->mad_val); | |
2952 | break; | |
2953 | case MAD_SV: | |
ad64d0ec | 2954 | sv_free(MUTABLE_SV(mp->mad_val)); |
eb8433b7 NC |
2955 | break; |
2956 | default: | |
2957 | PerlIO_printf(PerlIO_stderr(), "Unrecognized mad\n"); | |
2958 | break; | |
2959 | } | |
2960 | Safefree(mp); | |
2961 | } | |
2962 | ||
2963 | #endif | |
2964 | ||
79072805 | 2965 | OP * |
864dbfa3 | 2966 | Perl_newNULLLIST(pTHX) |
79072805 | 2967 | { |
8990e307 LW |
2968 | return newOP(OP_STUB, 0); |
2969 | } | |
2970 | ||
1f676739 | 2971 | static OP * |
b7783a12 | 2972 | S_force_list(pTHX_ OP *o) |
8990e307 | 2973 | { |
11343788 | 2974 | if (!o || o->op_type != OP_LIST) |
5f66b61c | 2975 | o = newLISTOP(OP_LIST, 0, o, NULL); |
93c66552 | 2976 | op_null(o); |
11343788 | 2977 | return o; |
79072805 LW |
2978 | } |
2979 | ||
2980 | OP * | |
864dbfa3 | 2981 | Perl_newLISTOP(pTHX_ I32 type, I32 flags, OP *first, OP *last) |
79072805 | 2982 | { |
27da23d5 | 2983 | dVAR; |
79072805 LW |
2984 | LISTOP *listop; |
2985 | ||
b7dc083c | 2986 | NewOp(1101, listop, 1, LISTOP); |
79072805 | 2987 | |
eb160463 | 2988 | listop->op_type = (OPCODE)type; |
22c35a8c | 2989 | listop->op_ppaddr = PL_ppaddr[type]; |
117dada2 SM |
2990 | if (first || last) |
2991 | flags |= OPf_KIDS; | |
eb160463 | 2992 | listop->op_flags = (U8)flags; |
79072805 LW |
2993 | |
2994 | if (!last && first) | |
2995 | last = first; | |
2996 | else if (!first && last) | |
2997 | first = last; | |
8990e307 LW |
2998 | else if (first) |
2999 | first->op_sibling = last; | |
79072805 LW |
3000 | listop->op_first = first; |
3001 | listop->op_last = last; | |
8990e307 | 3002 | if (type == OP_LIST) { |
551405c4 | 3003 | OP* const pushop = newOP(OP_PUSHMARK, 0); |
8990e307 LW |
3004 | pushop->op_sibling = first; |
3005 | listop->op_first = pushop; | |
3006 | listop->op_flags |= OPf_KIDS; | |
3007 | if (!last) | |
3008 | listop->op_last = pushop; | |
3009 | } | |
79072805 | 3010 | |
463d09e6 | 3011 | return CHECKOP(type, listop); |
79072805 LW |
3012 | } |
3013 | ||
3014 | OP * | |
864dbfa3 | 3015 | Perl_newOP(pTHX_ I32 type, I32 flags) |
79072805 | 3016 | { |
27da23d5 | 3017 | dVAR; |
11343788 | 3018 | OP *o; |
b7dc083c | 3019 | NewOp(1101, o, 1, OP); |
eb160463 | 3020 | o->op_type = (OPCODE)type; |
22c35a8c | 3021 | o->op_ppaddr = PL_ppaddr[type]; |
eb160463 | 3022 | o->op_flags = (U8)flags; |
670f3923 DM |
3023 | o->op_latefree = 0; |
3024 | o->op_latefreed = 0; | |
7e5d8ed2 | 3025 | o->op_attached = 0; |
79072805 | 3026 | |
11343788 | 3027 | o->op_next = o; |
eb160463 | 3028 | o->op_private = (U8)(0 | (flags >> 8)); |
22c35a8c | 3029 | if (PL_opargs[type] & OA_RETSCALAR) |
11343788 | 3030 | scalar(o); |
22c35a8c | 3031 | if (PL_opargs[type] & OA_TARGET) |
11343788 MB |
3032 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
3033 | return CHECKOP(type, o); | |
79072805 LW |
3034 | } |
3035 | ||
3036 | OP * | |
864dbfa3 | 3037 | Perl_newUNOP(pTHX_ I32 type, I32 flags, OP *first) |
79072805 | 3038 | { |
27da23d5 | 3039 | dVAR; |
79072805 LW |
3040 | UNOP *unop; |
3041 | ||
93a17b20 | 3042 | if (!first) |
aeea060c | 3043 | first = newOP(OP_STUB, 0); |
22c35a8c | 3044 | if (PL_opargs[type] & OA_MARK) |
8990e307 | 3045 | first = force_list(first); |
93a17b20 | 3046 | |
b7dc083c | 3047 | NewOp(1101, unop, 1, UNOP); |
eb160463 | 3048 | unop->op_type = (OPCODE)type; |
22c35a8c | 3049 | unop->op_ppaddr = PL_ppaddr[type]; |
79072805 | 3050 | unop->op_first = first; |
585ec06d | 3051 | unop->op_flags = (U8)(flags | OPf_KIDS); |
eb160463 | 3052 | unop->op_private = (U8)(1 | (flags >> 8)); |
e50aee73 | 3053 | unop = (UNOP*) CHECKOP(type, unop); |
79072805 LW |
3054 | if (unop->op_next) |
3055 | return (OP*)unop; | |
3056 | ||
a0d0e21e | 3057 | return fold_constants((OP *) unop); |
79072805 LW |
3058 | } |
3059 | ||
3060 | OP * | |
864dbfa3 | 3061 | Perl_newBINOP(pTHX_ I32 type, I32 flags, OP *first, OP *last) |
79072805 | 3062 | { |
27da23d5 | 3063 | dVAR; |
79072805 | 3064 | BINOP *binop; |
b7dc083c | 3065 | NewOp(1101, binop, 1, BINOP); |
79072805 LW |
3066 | |
3067 | if (!first) | |
3068 | first = newOP(OP_NULL, 0); | |
3069 | ||
eb160463 | 3070 | binop->op_type = (OPCODE)type; |
22c35a8c | 3071 | binop->op_ppaddr = PL_ppaddr[type]; |
79072805 | 3072 | binop->op_first = first; |
585ec06d | 3073 | binop->op_flags = (U8)(flags | OPf_KIDS); |
79072805 LW |
3074 | if (!last) { |
3075 | last = first; | |
eb160463 | 3076 | binop->op_private = (U8)(1 | (flags >> 8)); |
79072805 LW |
3077 | } |
3078 | else { | |
eb160463 | 3079 | binop->op_private = (U8)(2 | (flags >> 8)); |
79072805 LW |
3080 | first->op_sibling = last; |
3081 | } | |
3082 | ||
e50aee73 | 3083 | binop = (BINOP*)CHECKOP(type, binop); |
eb160463 | 3084 | if (binop->op_next || binop->op_type != (OPCODE)type) |
79072805 LW |
3085 | return (OP*)binop; |
3086 | ||
7284ab6f | 3087 | binop->op_last = binop->op_first->op_sibling; |
79072805 | 3088 | |
a0d0e21e | 3089 | return fold_constants((OP *)binop); |
79072805 LW |
3090 | } |
3091 | ||
5f66b61c AL |
3092 | static int uvcompare(const void *a, const void *b) |
3093 | __attribute__nonnull__(1) | |
3094 | __attribute__nonnull__(2) | |
3095 | __attribute__pure__; | |
abb2c242 | 3096 | static int uvcompare(const void *a, const void *b) |
2b9d42f0 | 3097 | { |
e1ec3a88 | 3098 | if (*((const UV *)a) < (*(const UV *)b)) |
2b9d42f0 | 3099 | return -1; |
e1ec3a88 | 3100 | if (*((const UV *)a) > (*(const UV *)b)) |
2b9d42f0 | 3101 | return 1; |
e1ec3a88 | 3102 | if (*((const UV *)a+1) < (*(const UV *)b+1)) |
2b9d42f0 | 3103 | return -1; |
e1ec3a88 | 3104 | if (*((const UV *)a+1) > (*(const UV *)b+1)) |
2b9d42f0 | 3105 | return 1; |
a0ed51b3 LW |
3106 | return 0; |
3107 | } | |
3108 | ||
0d86688d NC |
3109 | static OP * |
3110 | S_pmtrans(pTHX_ OP *o, OP *expr, OP *repl) | |
79072805 | 3111 | { |
97aff369 | 3112 | dVAR; |
2d03de9c | 3113 | SV * const tstr = ((SVOP*)expr)->op_sv; |
fbbb0949 DM |
3114 | SV * const rstr = |
3115 | #ifdef PERL_MAD | |
3116 | (repl->op_type == OP_NULL) | |
3117 | ? ((SVOP*)((LISTOP*)repl)->op_first)->op_sv : | |
3118 | #endif | |
3119 | ((SVOP*)repl)->op_sv; | |
463ee0b2 LW |
3120 | STRLEN tlen; |
3121 | STRLEN rlen; | |
5c144d81 NC |
3122 | const U8 *t = (U8*)SvPV_const(tstr, tlen); |
3123 | const U8 *r = (U8*)SvPV_const(rstr, rlen); | |
79072805 LW |
3124 | register I32 i; |
3125 | register I32 j; | |
9b877dbb | 3126 | I32 grows = 0; |
79072805 LW |
3127 | register short *tbl; |
3128 | ||
551405c4 AL |
3129 | const I32 complement = o->op_private & OPpTRANS_COMPLEMENT; |
3130 | const I32 squash = o->op_private & OPpTRANS_SQUASH; | |
3131 | I32 del = o->op_private & OPpTRANS_DELETE; | |
043e41b8 | 3132 | SV* swash; |
7918f24d NC |
3133 | |
3134 | PERL_ARGS_ASSERT_PMTRANS; | |
3135 | ||
800b4dc4 | 3136 | PL_hints |= HINT_BLOCK_SCOPE; |
1c846c1f | 3137 | |
036b4402 GS |
3138 | if (SvUTF8(tstr)) |
3139 | o->op_private |= OPpTRANS_FROM_UTF; | |
1c846c1f NIS |
3140 | |
3141 | if (SvUTF8(rstr)) | |
036b4402 | 3142 | o->op_private |= OPpTRANS_TO_UTF; |
79072805 | 3143 | |
a0ed51b3 | 3144 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { |
396482e1 | 3145 | SV* const listsv = newSVpvs("# comment\n"); |
c445ea15 | 3146 | SV* transv = NULL; |
5c144d81 NC |
3147 | const U8* tend = t + tlen; |
3148 | const U8* rend = r + rlen; | |
ba210ebe | 3149 | STRLEN ulen; |
84c133a0 RB |
3150 | UV tfirst = 1; |
3151 | UV tlast = 0; | |
3152 | IV tdiff; | |
3153 | UV rfirst = 1; | |
3154 | UV rlast = 0; | |
3155 | IV rdiff; | |
3156 | IV diff; | |
a0ed51b3 LW |
3157 | I32 none = 0; |
3158 | U32 max = 0; | |
3159 | I32 bits; | |
a0ed51b3 | 3160 | I32 havefinal = 0; |
9c5ffd7c | 3161 | U32 final = 0; |
551405c4 AL |
3162 | const I32 from_utf = o->op_private & OPpTRANS_FROM_UTF; |
3163 | const I32 to_utf = o->op_private & OPpTRANS_TO_UTF; | |
bf4a1e57 JH |
3164 | U8* tsave = NULL; |
3165 | U8* rsave = NULL; | |
9f7f3913 | 3166 | const U32 flags = UTF8_ALLOW_DEFAULT; |
bf4a1e57 JH |
3167 | |
3168 | if (!from_utf) { | |
3169 | STRLEN len = tlen; | |
5c144d81 | 3170 | t = tsave = bytes_to_utf8(t, &len); |
bf4a1e57 JH |
3171 | tend = t + len; |
3172 | } | |
3173 | if (!to_utf && rlen) { | |
3174 | STRLEN len = rlen; | |
5c144d81 | 3175 | r = rsave = bytes_to_utf8(r, &len); |
bf4a1e57 JH |
3176 | rend = r + len; |
3177 | } | |
a0ed51b3 | 3178 | |
2b9d42f0 NIS |
3179 | /* There are several snags with this code on EBCDIC: |
3180 | 1. 0xFF is a legal UTF-EBCDIC byte (there are no illegal bytes). | |
3181 | 2. scan_const() in toke.c has encoded chars in native encoding which makes | |
3182 | ranges at least in EBCDIC 0..255 range the bottom odd. | |
3183 | */ | |
3184 | ||
a0ed51b3 | 3185 | if (complement) { |
89ebb4a3 | 3186 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
2b9d42f0 | 3187 | UV *cp; |
a0ed51b3 | 3188 | UV nextmin = 0; |
a02a5408 | 3189 | Newx(cp, 2*tlen, UV); |
a0ed51b3 | 3190 | i = 0; |
396482e1 | 3191 | transv = newSVpvs(""); |
a0ed51b3 | 3192 | while (t < tend) { |
9f7f3913 | 3193 | cp[2*i] = utf8n_to_uvuni(t, tend-t, &ulen, flags); |
2b9d42f0 NIS |
3194 | t += ulen; |
3195 | if (t < tend && NATIVE_TO_UTF(*t) == 0xff) { | |
a0ed51b3 | 3196 | t++; |
9f7f3913 | 3197 | cp[2*i+1] = utf8n_to_uvuni(t, tend-t, &ulen, flags); |
2b9d42f0 | 3198 | t += ulen; |
a0ed51b3 | 3199 | } |
2b9d42f0 NIS |
3200 | else { |
3201 | cp[2*i+1] = cp[2*i]; | |
3202 | } | |
3203 | i++; | |
a0ed51b3 | 3204 | } |
2b9d42f0 | 3205 | qsort(cp, i, 2*sizeof(UV), uvcompare); |
a0ed51b3 | 3206 | for (j = 0; j < i; j++) { |
2b9d42f0 | 3207 | UV val = cp[2*j]; |
a0ed51b3 LW |
3208 | diff = val - nextmin; |
3209 | if (diff > 0) { | |
9041c2e3 | 3210 | t = uvuni_to_utf8(tmpbuf,nextmin); |
dfe13c55 | 3211 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 | 3212 | if (diff > 1) { |
2b9d42f0 | 3213 | U8 range_mark = UTF_TO_NATIVE(0xff); |
9041c2e3 | 3214 | t = uvuni_to_utf8(tmpbuf, val - 1); |
2b9d42f0 | 3215 | sv_catpvn(transv, (char *)&range_mark, 1); |
dfe13c55 | 3216 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 LW |
3217 | } |
3218 | } | |
2b9d42f0 | 3219 | val = cp[2*j+1]; |
a0ed51b3 LW |
3220 | if (val >= nextmin) |
3221 | nextmin = val + 1; | |
3222 | } | |
9041c2e3 | 3223 | t = uvuni_to_utf8(tmpbuf,nextmin); |
dfe13c55 | 3224 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
2b9d42f0 NIS |
3225 | { |
3226 | U8 range_mark = UTF_TO_NATIVE(0xff); | |
3227 | sv_catpvn(transv, (char *)&range_mark, 1); | |
3228 | } | |
b851fbc1 JH |
3229 | t = uvuni_to_utf8_flags(tmpbuf, 0x7fffffff, |
3230 | UNICODE_ALLOW_SUPER); | |
dfe13c55 | 3231 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
93524f2b | 3232 | t = (const U8*)SvPVX_const(transv); |
a0ed51b3 LW |
3233 | tlen = SvCUR(transv); |
3234 | tend = t + tlen; | |
455d824a | 3235 | Safefree(cp); |
a0ed51b3 LW |
3236 | } |
3237 | else if (!rlen && !del) { | |
3238 | r = t; rlen = tlen; rend = tend; | |
4757a243 LW |
3239 | } |
3240 | if (!squash) { | |
05d340b8 | 3241 | if ((!rlen && !del) || t == r || |
12ae5dfc | 3242 | (tlen == rlen && memEQ((char *)t, (char *)r, tlen))) |
01ec43d0 | 3243 | { |
4757a243 | 3244 | o->op_private |= OPpTRANS_IDENTICAL; |
01ec43d0 | 3245 | } |
a0ed51b3 LW |
3246 | } |
3247 | ||
3248 | while (t < tend || tfirst <= tlast) { | |
3249 | /* see if we need more "t" chars */ | |
3250 | if (tfirst > tlast) { | |
9f7f3913 | 3251 | tfirst = (I32)utf8n_to_uvuni(t, tend - t, &ulen, flags); |
a0ed51b3 | 3252 | t += ulen; |
2b9d42f0 | 3253 | if (t < tend && NATIVE_TO_UTF(*t) == 0xff) { /* illegal utf8 val indicates range */ |
ba210ebe | 3254 | t++; |
9f7f3913 | 3255 | tlast = (I32)utf8n_to_uvuni(t, tend - t, &ulen, flags); |
a0ed51b3 LW |
3256 | t += ulen; |
3257 | } | |
3258 | else | |
3259 | tlast = tfirst; | |
3260 | } | |
3261 | ||
3262 | /* now see if we need more "r" chars */ | |
3263 | if (rfirst > rlast) { | |
3264 | if (r < rend) { | |
9f7f3913 | 3265 | rfirst = (I32)utf8n_to_uvuni(r, rend - r, &ulen, flags); |
a0ed51b3 | 3266 | r += ulen; |
2b9d42f0 | 3267 | if (r < rend && NATIVE_TO_UTF(*r) == 0xff) { /* illegal utf8 val indicates range */ |
ba210ebe | 3268 | r++; |
9f7f3913 | 3269 | rlast = (I32)utf8n_to_uvuni(r, rend - r, &ulen, flags); |
a0ed51b3 LW |
3270 | r += ulen; |
3271 | } | |
3272 | else | |
3273 | rlast = rfirst; | |
3274 | } | |
3275 | else { | |
3276 | if (!havefinal++) | |
3277 | final = rlast; | |
3278 | rfirst = rlast = 0xffffffff; | |
3279 | } | |
3280 | } | |
3281 | ||
3282 | /* now see which range will peter our first, if either. */ | |
3283 | tdiff = tlast - tfirst; | |
3284 | rdiff = rlast - rfirst; | |
3285 | ||
3286 | if (tdiff <= rdiff) | |
3287 | diff = tdiff; | |
3288 | else | |
3289 | diff = rdiff; | |
3290 | ||
3291 | if (rfirst == 0xffffffff) { | |
3292 | diff = tdiff; /* oops, pretend rdiff is infinite */ | |
3293 | if (diff > 0) | |
894356b3 GS |
3294 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t%04lx\tXXXX\n", |
3295 | (long)tfirst, (long)tlast); | |
a0ed51b3 | 3296 | else |
894356b3 | 3297 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t\tXXXX\n", (long)tfirst); |
a0ed51b3 LW |
3298 | } |
3299 | else { | |
3300 | if (diff > 0) | |
894356b3 GS |
3301 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t%04lx\t%04lx\n", |
3302 | (long)tfirst, (long)(tfirst + diff), | |
3303 | (long)rfirst); | |
a0ed51b3 | 3304 | else |
894356b3 GS |
3305 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t\t%04lx\n", |
3306 | (long)tfirst, (long)rfirst); | |
a0ed51b3 LW |
3307 | |
3308 | if (rfirst + diff > max) | |
3309 | max = rfirst + diff; | |
9b877dbb | 3310 | if (!grows) |
45005bfb JH |
3311 | grows = (tfirst < rfirst && |
3312 | UNISKIP(tfirst) < UNISKIP(rfirst + diff)); | |
3313 | rfirst += diff + 1; | |
a0ed51b3 LW |
3314 | } |
3315 | tfirst += diff + 1; | |
3316 | } | |
3317 | ||
3318 | none = ++max; | |
3319 | if (del) | |
3320 | del = ++max; | |
3321 | ||
3322 | if (max > 0xffff) | |
3323 | bits = 32; | |
3324 | else if (max > 0xff) | |
3325 | bits = 16; | |
3326 | else | |
3327 | bits = 8; | |
3328 | ||
ea71c68d | 3329 | PerlMemShared_free(cPVOPo->op_pv); |
b3123a61 | 3330 | cPVOPo->op_pv = NULL; |
043e41b8 | 3331 | |
ad64d0ec | 3332 | swash = MUTABLE_SV(swash_init("utf8", "", listsv, bits, none)); |
043e41b8 DM |
3333 | #ifdef USE_ITHREADS |
3334 | cPADOPo->op_padix = pad_alloc(OP_TRANS, SVs_PADTMP); | |
3335 | SvREFCNT_dec(PAD_SVl(cPADOPo->op_padix)); | |
3336 | PAD_SETSV(cPADOPo->op_padix, swash); | |
3337 | SvPADTMP_on(swash); | |
a5446a64 | 3338 | SvREADONLY_on(swash); |
043e41b8 DM |
3339 | #else |
3340 | cSVOPo->op_sv = swash; | |
3341 | #endif | |
a0ed51b3 | 3342 | SvREFCNT_dec(listsv); |
b37c2d43 | 3343 | SvREFCNT_dec(transv); |
a0ed51b3 | 3344 | |
45005bfb | 3345 | if (!del && havefinal && rlen) |
85fbaab2 | 3346 | (void)hv_store(MUTABLE_HV(SvRV(swash)), "FINAL", 5, |
b448e4fe | 3347 | newSVuv((UV)final), 0); |
a0ed51b3 | 3348 | |
9b877dbb | 3349 | if (grows) |
a0ed51b3 LW |
3350 | o->op_private |= OPpTRANS_GROWS; |
3351 | ||
b37c2d43 AL |
3352 | Safefree(tsave); |
3353 | Safefree(rsave); | |
9b877dbb | 3354 | |
eb8433b7 NC |
3355 | #ifdef PERL_MAD |
3356 | op_getmad(expr,o,'e'); | |
3357 | op_getmad(repl,o,'r'); | |
3358 | #else | |
a0ed51b3 LW |
3359 | op_free(expr); |
3360 | op_free(repl); | |
eb8433b7 | 3361 | #endif |
a0ed51b3 LW |
3362 | return o; |
3363 | } | |
3364 | ||
3365 | tbl = (short*)cPVOPo->op_pv; | |
79072805 LW |
3366 | if (complement) { |
3367 | Zero(tbl, 256, short); | |
eb160463 | 3368 | for (i = 0; i < (I32)tlen; i++) |
ec49126f | 3369 | tbl[t[i]] = -1; |
79072805 LW |
3370 | for (i = 0, j = 0; i < 256; i++) { |
3371 | if (!tbl[i]) { | |
eb160463 | 3372 | if (j >= (I32)rlen) { |
a0ed51b3 | 3373 | if (del) |
79072805 LW |
3374 | tbl[i] = -2; |
3375 | else if (rlen) | |
ec49126f | 3376 | tbl[i] = r[j-1]; |
79072805 | 3377 | else |
eb160463 | 3378 | tbl[i] = (short)i; |
79072805 | 3379 | } |
9b877dbb IH |
3380 | else { |
3381 | if (i < 128 && r[j] >= 128) | |
3382 | grows = 1; | |
ec49126f | 3383 | tbl[i] = r[j++]; |
9b877dbb | 3384 | } |
79072805 LW |
3385 | } |
3386 | } | |
05d340b8 JH |
3387 | if (!del) { |
3388 | if (!rlen) { | |
3389 | j = rlen; | |
3390 | if (!squash) | |
3391 | o->op_private |= OPpTRANS_IDENTICAL; | |
3392 | } | |
eb160463 | 3393 | else if (j >= (I32)rlen) |
05d340b8 | 3394 | j = rlen - 1; |
10db182f | 3395 | else { |
aa1f7c5b JH |
3396 | tbl = |
3397 | (short *) | |
3398 | PerlMemShared_realloc(tbl, | |
3399 | (0x101+rlen-j) * sizeof(short)); | |
10db182f YO |
3400 | cPVOPo->op_pv = (char*)tbl; |
3401 | } | |
585ec06d | 3402 | tbl[0x100] = (short)(rlen - j); |
eb160463 | 3403 | for (i=0; i < (I32)rlen - j; i++) |
8973db79 JH |
3404 | tbl[0x101+i] = r[j+i]; |
3405 | } | |
79072805 LW |
3406 | } |
3407 | else { | |
a0ed51b3 | 3408 | if (!rlen && !del) { |
79072805 | 3409 | r = t; rlen = tlen; |
5d06d08e | 3410 | if (!squash) |
4757a243 | 3411 | o->op_private |= OPpTRANS_IDENTICAL; |
79072805 | 3412 | } |
94bfe852 RGS |
3413 | else if (!squash && rlen == tlen && memEQ((char*)t, (char*)r, tlen)) { |
3414 | o->op_private |= OPpTRANS_IDENTICAL; | |
3415 | } | |
79072805 LW |
3416 | for (i = 0; i < 256; i++) |
3417 | tbl[i] = -1; | |
eb160463 GS |
3418 | for (i = 0, j = 0; i < (I32)tlen; i++,j++) { |
3419 | if (j >= (I32)rlen) { | |
a0ed51b3 | 3420 | if (del) { |
ec49126f | 3421 | if (tbl[t[i]] == -1) |
3422 | tbl[t[i]] = -2; | |
79072805 LW |
3423 | continue; |
3424 | } | |
3425 | --j; | |
3426 | } | |
9b877dbb IH |
3427 | if (tbl[t[i]] == -1) { |
3428 | if (t[i] < 128 && r[j] >= 128) | |
3429 | grows = 1; | |
ec49126f | 3430 | tbl[t[i]] = r[j]; |
9b877dbb | 3431 | } |
79072805 LW |
3432 | } |
3433 | } | |
b08e453b RB |
3434 | |
3435 | if(ckWARN(WARN_MISC)) { | |
3436 | if(del && rlen == tlen) { | |
3437 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Useless use of /d modifier in transliteration operator"); | |
3438 | } else if(rlen > tlen) { | |
3439 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Replacement list is longer than search list"); | |
3440 | } | |
3441 | } | |
3442 | ||
9b877dbb IH |
3443 | if (grows) |
3444 | o->op_private |= OPpTRANS_GROWS; | |
eb8433b7 NC |
3445 | #ifdef PERL_MAD |
3446 | op_getmad(expr,o,'e'); | |
3447 | op_getmad(repl,o,'r'); | |
3448 | #else | |
79072805 LW |
3449 | op_free(expr); |
3450 | op_free(repl); | |
eb8433b7 | 3451 | #endif |
79072805 | 3452 | |
11343788 | 3453 | return o; |
79072805 LW |
3454 | } |
3455 | ||
3456 | OP * | |
864dbfa3 | 3457 | Perl_newPMOP(pTHX_ I32 type, I32 flags) |
79072805 | 3458 | { |
27da23d5 | 3459 | dVAR; |
79072805 LW |
3460 | PMOP *pmop; |
3461 | ||
b7dc083c | 3462 | NewOp(1101, pmop, 1, PMOP); |
eb160463 | 3463 | pmop->op_type = (OPCODE)type; |
22c35a8c | 3464 | pmop->op_ppaddr = PL_ppaddr[type]; |
eb160463 GS |
3465 | pmop->op_flags = (U8)flags; |
3466 | pmop->op_private = (U8)(0 | (flags >> 8)); | |
79072805 | 3467 | |
3280af22 | 3468 | if (PL_hints & HINT_RE_TAINT) |
c737faaf | 3469 | pmop->op_pmflags |= PMf_RETAINT; |
3280af22 | 3470 | if (PL_hints & HINT_LOCALE) |
c737faaf YO |
3471 | pmop->op_pmflags |= PMf_LOCALE; |
3472 | ||
36477c24 | 3473 | |
debc9467 | 3474 | #ifdef USE_ITHREADS |
402d2eb1 NC |
3475 | assert(SvPOK(PL_regex_pad[0])); |
3476 | if (SvCUR(PL_regex_pad[0])) { | |
3477 | /* Pop off the "packed" IV from the end. */ | |
3478 | SV *const repointer_list = PL_regex_pad[0]; | |
3479 | const char *p = SvEND(repointer_list) - sizeof(IV); | |
3480 | const IV offset = *((IV*)p); | |
3481 | ||
3482 | assert(SvCUR(repointer_list) % sizeof(IV) == 0); | |
3483 | ||
3484 | SvEND_set(repointer_list, p); | |
3485 | ||
110f3028 | 3486 | pmop->op_pmoffset = offset; |
14a49a24 NC |
3487 | /* This slot should be free, so assert this: */ |
3488 | assert(PL_regex_pad[offset] == &PL_sv_undef); | |
551405c4 | 3489 | } else { |
14a49a24 | 3490 | SV * const repointer = &PL_sv_undef; |
9a8b6709 | 3491 | av_push(PL_regex_padav, repointer); |
551405c4 AL |
3492 | pmop->op_pmoffset = av_len(PL_regex_padav); |
3493 | PL_regex_pad = AvARRAY(PL_regex_padav); | |
13137afc | 3494 | } |
debc9467 | 3495 | #endif |
1eb1540c | 3496 | |
463d09e6 | 3497 | return CHECKOP(type, pmop); |
79072805 LW |
3498 | } |
3499 | ||
131b3ad0 DM |
3500 | /* Given some sort of match op o, and an expression expr containing a |
3501 | * pattern, either compile expr into a regex and attach it to o (if it's | |
3502 | * constant), or convert expr into a runtime regcomp op sequence (if it's | |
3503 | * not) | |
3504 | * | |
3505 | * isreg indicates that the pattern is part of a regex construct, eg | |
3506 | * $x =~ /pattern/ or split /pattern/, as opposed to $x =~ $pattern or | |
3507 | * split "pattern", which aren't. In the former case, expr will be a list | |
3508 | * if the pattern contains more than one term (eg /a$b/) or if it contains | |
3509 | * a replacement, ie s/// or tr///. | |
3510 | */ | |
3511 | ||
79072805 | 3512 | OP * |
131b3ad0 | 3513 | Perl_pmruntime(pTHX_ OP *o, OP *expr, bool isreg) |
79072805 | 3514 | { |
27da23d5 | 3515 | dVAR; |
79072805 LW |
3516 | PMOP *pm; |
3517 | LOGOP *rcop; | |
ce862d02 | 3518 | I32 repl_has_vars = 0; |
5f66b61c | 3519 | OP* repl = NULL; |
131b3ad0 DM |
3520 | bool reglist; |
3521 | ||
7918f24d NC |
3522 | PERL_ARGS_ASSERT_PMRUNTIME; |
3523 | ||
131b3ad0 DM |
3524 | if (o->op_type == OP_SUBST || o->op_type == OP_TRANS) { |
3525 | /* last element in list is the replacement; pop it */ | |
3526 | OP* kid; | |
3527 | repl = cLISTOPx(expr)->op_last; | |
3528 | kid = cLISTOPx(expr)->op_first; | |
3529 | while (kid->op_sibling != repl) | |
3530 | kid = kid->op_sibling; | |
5f66b61c | 3531 | kid->op_sibling = NULL; |
131b3ad0 DM |
3532 | cLISTOPx(expr)->op_last = kid; |
3533 | } | |
79072805 | 3534 | |
131b3ad0 DM |
3535 | if (isreg && expr->op_type == OP_LIST && |
3536 | cLISTOPx(expr)->op_first->op_sibling == cLISTOPx(expr)->op_last) | |
3537 | { | |
3538 | /* convert single element list to element */ | |
0bd48802 | 3539 | OP* const oe = expr; |
131b3ad0 | 3540 | expr = cLISTOPx(oe)->op_first->op_sibling; |
5f66b61c AL |
3541 | cLISTOPx(oe)->op_first->op_sibling = NULL; |
3542 | cLISTOPx(oe)->op_last = NULL; | |
131b3ad0 DM |
3543 | op_free(oe); |
3544 | } | |
3545 | ||
3546 | if (o->op_type == OP_TRANS) { | |
11343788 | 3547 | return pmtrans(o, expr, repl); |
131b3ad0 DM |
3548 | } |
3549 | ||
3550 | reglist = isreg && expr->op_type == OP_LIST; | |
3551 | if (reglist) | |
3552 | op_null(expr); | |
79072805 | 3553 | |
3280af22 | 3554 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 3555 | pm = (PMOP*)o; |
79072805 LW |
3556 | |
3557 | if (expr->op_type == OP_CONST) { | |
b9ad30b4 | 3558 | SV *pat = ((SVOP*)expr)->op_sv; |
c737faaf | 3559 | U32 pm_flags = pm->op_pmflags & PMf_COMPILETIME; |
5c144d81 | 3560 | |
0ac6acae AB |
3561 | if (o->op_flags & OPf_SPECIAL) |
3562 | pm_flags |= RXf_SPLIT; | |
5c144d81 | 3563 | |
b9ad30b4 NC |
3564 | if (DO_UTF8(pat)) { |
3565 | assert (SvUTF8(pat)); | |
3566 | } else if (SvUTF8(pat)) { | |
3567 | /* Not doing UTF-8, despite what the SV says. Is this only if we're | |
3568 | trapped in use 'bytes'? */ | |
3569 | /* Make a copy of the octet sequence, but without the flag on, as | |
3570 | the compiler now honours the SvUTF8 flag on pat. */ | |
3571 | STRLEN len; | |
3572 | const char *const p = SvPV(pat, len); | |
3573 | pat = newSVpvn_flags(p, len, SVs_TEMP); | |
3574 | } | |
0ac6acae | 3575 | |
3ab4a224 | 3576 | PM_SETRE(pm, CALLREGCOMP(pat, pm_flags)); |
c737faaf | 3577 | |
eb8433b7 NC |
3578 | #ifdef PERL_MAD |
3579 | op_getmad(expr,(OP*)pm,'e'); | |
3580 | #else | |
79072805 | 3581 | op_free(expr); |
eb8433b7 | 3582 | #endif |
79072805 LW |
3583 | } |
3584 | else { | |
3280af22 | 3585 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) |
1c846c1f | 3586 | expr = newUNOP((!(PL_hints & HINT_RE_EVAL) |
2cd61cdb IZ |
3587 | ? OP_REGCRESET |
3588 | : OP_REGCMAYBE),0,expr); | |
463ee0b2 | 3589 | |
b7dc083c | 3590 | NewOp(1101, rcop, 1, LOGOP); |
79072805 | 3591 | rcop->op_type = OP_REGCOMP; |
22c35a8c | 3592 | rcop->op_ppaddr = PL_ppaddr[OP_REGCOMP]; |
79072805 | 3593 | rcop->op_first = scalar(expr); |
131b3ad0 DM |
3594 | rcop->op_flags |= OPf_KIDS |
3595 | | ((PL_hints & HINT_RE_EVAL) ? OPf_SPECIAL : 0) | |
3596 | | (reglist ? OPf_STACKED : 0); | |
79072805 | 3597 | rcop->op_private = 1; |
11343788 | 3598 | rcop->op_other = o; |
131b3ad0 DM |
3599 | if (reglist) |
3600 | rcop->op_targ = pad_alloc(rcop->op_type, SVs_PADTMP); | |
3601 | ||
b5c19bd7 DM |
3602 | /* /$x/ may cause an eval, since $x might be qr/(?{..})/ */ |
3603 | PL_cv_has_eval = 1; | |
79072805 LW |
3604 | |
3605 | /* establish postfix order */ | |
3280af22 | 3606 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) { |
463ee0b2 LW |
3607 | LINKLIST(expr); |
3608 | rcop->op_next = expr; | |
3609 | ((UNOP*)expr)->op_first->op_next = (OP*)rcop; | |
3610 | } | |
3611 | else { | |
3612 | rcop->op_next = LINKLIST(expr); | |
3613 | expr->op_next = (OP*)rcop; | |
3614 | } | |
79072805 | 3615 | |
11343788 | 3616 | prepend_elem(o->op_type, scalar((OP*)rcop), o); |
79072805 LW |
3617 | } |
3618 | ||
3619 | if (repl) { | |
748a9306 | 3620 | OP *curop; |
0244c3a4 | 3621 | if (pm->op_pmflags & PMf_EVAL) { |
6136c704 | 3622 | curop = NULL; |
670a9cb2 DM |
3623 | if (CopLINE(PL_curcop) < (line_t)PL_parser->multi_end) |
3624 | CopLINE_set(PL_curcop, (line_t)PL_parser->multi_end); | |
0244c3a4 | 3625 | } |
748a9306 LW |
3626 | else if (repl->op_type == OP_CONST) |
3627 | curop = repl; | |
79072805 | 3628 | else { |
c445ea15 | 3629 | OP *lastop = NULL; |
79072805 | 3630 | for (curop = LINKLIST(repl); curop!=repl; curop = LINKLIST(curop)) { |
e80b829c | 3631 | if (curop->op_type == OP_SCOPE |
10250113 | 3632 | || curop->op_type == OP_LEAVE |
e80b829c | 3633 | || (PL_opargs[curop->op_type] & OA_DANGEROUS)) { |
79072805 | 3634 | if (curop->op_type == OP_GV) { |
6136c704 | 3635 | GV * const gv = cGVOPx_gv(curop); |
ce862d02 | 3636 | repl_has_vars = 1; |
f702bf4a | 3637 | if (strchr("&`'123456789+-\016\022", *GvENAME(gv))) |
79072805 LW |
3638 | break; |
3639 | } | |
3640 | else if (curop->op_type == OP_RV2CV) | |
3641 | break; | |
3642 | else if (curop->op_type == OP_RV2SV || | |
3643 | curop->op_type == OP_RV2AV || | |
3644 | curop->op_type == OP_RV2HV || | |
3645 | curop->op_type == OP_RV2GV) { | |
3646 | if (lastop && lastop->op_type != OP_GV) /*funny deref?*/ | |
3647 | break; | |
3648 | } | |
748a9306 LW |
3649 | else if (curop->op_type == OP_PADSV || |
3650 | curop->op_type == OP_PADAV || | |
3651 | curop->op_type == OP_PADHV || | |
e80b829c RGS |
3652 | curop->op_type == OP_PADANY) |
3653 | { | |
ce862d02 | 3654 | repl_has_vars = 1; |
748a9306 | 3655 | } |
1167e5da | 3656 | else if (curop->op_type == OP_PUSHRE) |
6f207bd3 | 3657 | NOOP; /* Okay here, dangerous in newASSIGNOP */ |
79072805 LW |
3658 | else |
3659 | break; | |
3660 | } | |
3661 | lastop = curop; | |
3662 | } | |
748a9306 | 3663 | } |
ce862d02 | 3664 | if (curop == repl |
e80b829c RGS |
3665 | && !(repl_has_vars |
3666 | && (!PM_GETRE(pm) | |
07bc277f | 3667 | || RX_EXTFLAGS(PM_GETRE(pm)) & RXf_EVAL_SEEN))) |
3be69782 | 3668 | { |
748a9306 | 3669 | pm->op_pmflags |= PMf_CONST; /* const for long enough */ |
11343788 | 3670 | prepend_elem(o->op_type, scalar(repl), o); |
748a9306 LW |
3671 | } |
3672 | else { | |
aaa362c4 | 3673 | if (curop == repl && !PM_GETRE(pm)) { /* Has variables. */ |
ce862d02 | 3674 | pm->op_pmflags |= PMf_MAYBE_CONST; |
ce862d02 | 3675 | } |
b7dc083c | 3676 | NewOp(1101, rcop, 1, LOGOP); |
748a9306 | 3677 | rcop->op_type = OP_SUBSTCONT; |
22c35a8c | 3678 | rcop->op_ppaddr = PL_ppaddr[OP_SUBSTCONT]; |
748a9306 LW |
3679 | rcop->op_first = scalar(repl); |
3680 | rcop->op_flags |= OPf_KIDS; | |
3681 | rcop->op_private = 1; | |
11343788 | 3682 | rcop->op_other = o; |
748a9306 LW |
3683 | |
3684 | /* establish postfix order */ | |
3685 | rcop->op_next = LINKLIST(repl); | |
3686 | repl->op_next = (OP*)rcop; | |
3687 | ||
20e98b0f | 3688 | pm->op_pmreplrootu.op_pmreplroot = scalar((OP*)rcop); |
29f2e912 NC |
3689 | assert(!(pm->op_pmflags & PMf_ONCE)); |
3690 | pm->op_pmstashstartu.op_pmreplstart = LINKLIST(rcop); | |
748a9306 | 3691 | rcop->op_next = 0; |
79072805 LW |
3692 | } |
3693 | } | |
3694 | ||
3695 | return (OP*)pm; | |
3696 | } | |
3697 | ||
3698 | OP * | |
864dbfa3 | 3699 | Perl_newSVOP(pTHX_ I32 type, I32 flags, SV *sv) |
79072805 | 3700 | { |
27da23d5 | 3701 | dVAR; |
79072805 | 3702 | SVOP *svop; |
7918f24d NC |
3703 | |
3704 | PERL_ARGS_ASSERT_NEWSVOP; | |
3705 | ||
b7dc083c | 3706 | NewOp(1101, svop, 1, SVOP); |
eb160463 | 3707 | svop->op_type = (OPCODE)type; |
22c35a8c | 3708 | svop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
3709 | svop->op_sv = sv; |
3710 | svop->op_next = (OP*)svop; | |
eb160463 | 3711 | svop->op_flags = (U8)flags; |
22c35a8c | 3712 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 3713 | scalar((OP*)svop); |
22c35a8c | 3714 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 3715 | svop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 3716 | return CHECKOP(type, svop); |
79072805 LW |
3717 | } |
3718 | ||
392d04bb | 3719 | #ifdef USE_ITHREADS |
79072805 | 3720 | OP * |
350de78d GS |
3721 | Perl_newPADOP(pTHX_ I32 type, I32 flags, SV *sv) |
3722 | { | |
27da23d5 | 3723 | dVAR; |
350de78d | 3724 | PADOP *padop; |
7918f24d NC |
3725 | |
3726 | PERL_ARGS_ASSERT_NEWPADOP; | |
3727 | ||
350de78d | 3728 | NewOp(1101, padop, 1, PADOP); |
eb160463 | 3729 | padop->op_type = (OPCODE)type; |
350de78d GS |
3730 | padop->op_ppaddr = PL_ppaddr[type]; |
3731 | padop->op_padix = pad_alloc(type, SVs_PADTMP); | |
dd2155a4 DM |
3732 | SvREFCNT_dec(PAD_SVl(padop->op_padix)); |
3733 | PAD_SETSV(padop->op_padix, sv); | |
58182927 NC |
3734 | assert(sv); |
3735 | SvPADTMP_on(sv); | |
350de78d | 3736 | padop->op_next = (OP*)padop; |
eb160463 | 3737 | padop->op_flags = (U8)flags; |
350de78d GS |
3738 | if (PL_opargs[type] & OA_RETSCALAR) |
3739 | scalar((OP*)padop); | |
3740 | if (PL_opargs[type] & OA_TARGET) | |
3741 | padop->op_targ = pad_alloc(type, SVs_PADTMP); | |
3742 | return CHECKOP(type, padop); | |
3743 | } | |
392d04bb | 3744 | #endif |
350de78d GS |
3745 | |
3746 | OP * | |
864dbfa3 | 3747 | Perl_newGVOP(pTHX_ I32 type, I32 flags, GV *gv) |
79072805 | 3748 | { |
27da23d5 | 3749 | dVAR; |
7918f24d NC |
3750 | |
3751 | PERL_ARGS_ASSERT_NEWGVOP; | |
3752 | ||
350de78d | 3753 | #ifdef USE_ITHREADS |
58182927 | 3754 | GvIN_PAD_on(gv); |
ff8997d7 | 3755 | return newPADOP(type, flags, SvREFCNT_inc_simple_NN(gv)); |
350de78d | 3756 | #else |
ff8997d7 | 3757 | return newSVOP(type, flags, SvREFCNT_inc_simple_NN(gv)); |
350de78d | 3758 | #endif |
79072805 LW |
3759 | } |
3760 | ||
3761 | OP * | |
864dbfa3 | 3762 | Perl_newPVOP(pTHX_ I32 type, I32 flags, char *pv) |
79072805 | 3763 | { |
27da23d5 | 3764 | dVAR; |
79072805 | 3765 | PVOP *pvop; |
b7dc083c | 3766 | NewOp(1101, pvop, 1, PVOP); |
eb160463 | 3767 | pvop->op_type = (OPCODE)type; |
22c35a8c | 3768 | pvop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
3769 | pvop->op_pv = pv; |
3770 | pvop->op_next = (OP*)pvop; | |
eb160463 | 3771 | pvop->op_flags = (U8)flags; |
22c35a8c | 3772 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 3773 | scalar((OP*)pvop); |
22c35a8c | 3774 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 3775 | pvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 3776 | return CHECKOP(type, pvop); |
79072805 LW |
3777 | } |
3778 | ||
eb8433b7 NC |
3779 | #ifdef PERL_MAD |
3780 | OP* | |
3781 | #else | |
79072805 | 3782 | void |
eb8433b7 | 3783 | #endif |
864dbfa3 | 3784 | Perl_package(pTHX_ OP *o) |
79072805 | 3785 | { |
97aff369 | 3786 | dVAR; |
bf070237 | 3787 | SV *const sv = cSVOPo->op_sv; |
eb8433b7 NC |
3788 | #ifdef PERL_MAD |
3789 | OP *pegop; | |
3790 | #endif | |
79072805 | 3791 | |
7918f24d NC |
3792 | PERL_ARGS_ASSERT_PACKAGE; |
3793 | ||
3280af22 NIS |
3794 | save_hptr(&PL_curstash); |
3795 | save_item(PL_curstname); | |
de11ba31 | 3796 | |
bf070237 | 3797 | PL_curstash = gv_stashsv(sv, GV_ADD); |
e1a479c5 | 3798 | |
bf070237 | 3799 | sv_setsv(PL_curstname, sv); |
de11ba31 | 3800 | |
7ad382f4 | 3801 | PL_hints |= HINT_BLOCK_SCOPE; |
53a7735b DM |
3802 | PL_parser->copline = NOLINE; |
3803 | PL_parser->expect = XSTATE; | |
eb8433b7 NC |
3804 | |
3805 | #ifndef PERL_MAD | |
3806 | op_free(o); | |
3807 | #else | |
3808 | if (!PL_madskills) { | |
3809 | op_free(o); | |
1d866c12 | 3810 | return NULL; |
eb8433b7 NC |
3811 | } |
3812 | ||
3813 | pegop = newOP(OP_NULL,0); | |
3814 | op_getmad(o,pegop,'P'); | |
3815 | return pegop; | |
3816 | #endif | |
79072805 LW |
3817 | } |
3818 | ||
eb8433b7 NC |
3819 | #ifdef PERL_MAD |
3820 | OP* | |
3821 | #else | |
85e6fe83 | 3822 | void |
eb8433b7 | 3823 | #endif |
88d95a4d | 3824 | Perl_utilize(pTHX_ int aver, I32 floor, OP *version, OP *idop, OP *arg) |
85e6fe83 | 3825 | { |
97aff369 | 3826 | dVAR; |
a0d0e21e | 3827 | OP *pack; |
a0d0e21e | 3828 | OP *imop; |
b1cb66bf | 3829 | OP *veop; |
eb8433b7 NC |
3830 | #ifdef PERL_MAD |
3831 | OP *pegop = newOP(OP_NULL,0); | |
3832 | #endif | |
85e6fe83 | 3833 | |
7918f24d NC |
3834 | PERL_ARGS_ASSERT_UTILIZE; |
3835 | ||
88d95a4d | 3836 | if (idop->op_type != OP_CONST) |
cea2e8a9 | 3837 | Perl_croak(aTHX_ "Module name must be constant"); |
85e6fe83 | 3838 | |
eb8433b7 NC |
3839 | if (PL_madskills) |
3840 | op_getmad(idop,pegop,'U'); | |
3841 | ||
5f66b61c | 3842 | veop = NULL; |
b1cb66bf | 3843 | |
aec46f14 | 3844 | if (version) { |
551405c4 | 3845 | SV * const vesv = ((SVOP*)version)->op_sv; |
b1cb66bf | 3846 | |
eb8433b7 NC |
3847 | if (PL_madskills) |
3848 | op_getmad(version,pegop,'V'); | |
aec46f14 | 3849 | if (!arg && !SvNIOKp(vesv)) { |
b1cb66bf | 3850 | arg = version; |
3851 | } | |
3852 | else { | |
3853 | OP *pack; | |
0f79a09d | 3854 | SV *meth; |
b1cb66bf | 3855 | |
44dcb63b | 3856 | if (version->op_type != OP_CONST || !SvNIOKp(vesv)) |
fe13d51d | 3857 | Perl_croak(aTHX_ "Version number must be a constant number"); |
b1cb66bf | 3858 | |
88d95a4d JH |
3859 | /* Make copy of idop so we don't free it twice */ |
3860 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)idop)->op_sv)); | |
b1cb66bf | 3861 | |
3862 | /* Fake up a method call to VERSION */ | |
18916d0d | 3863 | meth = newSVpvs_share("VERSION"); |
b1cb66bf | 3864 | veop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, |
3865 | append_elem(OP_LIST, | |
0f79a09d GS |
3866 | prepend_elem(OP_LIST, pack, list(version)), |
3867 | newSVOP(OP_METHOD_NAMED, 0, meth))); | |
b1cb66bf | 3868 | } |
3869 | } | |
aeea060c | 3870 | |
a0d0e21e | 3871 | /* Fake up an import/unimport */ |
eb8433b7 NC |
3872 | if (arg && arg->op_type == OP_STUB) { |
3873 | if (PL_madskills) | |
3874 | op_getmad(arg,pegop,'S'); | |
4633a7c4 | 3875 | imop = arg; /* no import on explicit () */ |
eb8433b7 | 3876 | } |
88d95a4d | 3877 | else if (SvNIOKp(((SVOP*)idop)->op_sv)) { |
5f66b61c | 3878 | imop = NULL; /* use 5.0; */ |
468aa647 RGS |
3879 | if (!aver) |
3880 | idop->op_private |= OPpCONST_NOVER; | |
b1cb66bf | 3881 | } |
4633a7c4 | 3882 | else { |
0f79a09d GS |
3883 | SV *meth; |
3884 | ||
eb8433b7 NC |
3885 | if (PL_madskills) |
3886 | op_getmad(arg,pegop,'A'); | |
3887 | ||
88d95a4d JH |
3888 | /* Make copy of idop so we don't free it twice */ |
3889 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)idop)->op_sv)); | |
0f79a09d GS |
3890 | |
3891 | /* Fake up a method call to import/unimport */ | |
427d62a4 | 3892 | meth = aver |
18916d0d | 3893 | ? newSVpvs_share("import") : newSVpvs_share("unimport"); |
4633a7c4 | 3894 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, |
0f79a09d GS |
3895 | append_elem(OP_LIST, |
3896 | prepend_elem(OP_LIST, pack, list(arg)), | |
3897 | newSVOP(OP_METHOD_NAMED, 0, meth))); | |
4633a7c4 LW |
3898 | } |
3899 | ||
a0d0e21e | 3900 | /* Fake up the BEGIN {}, which does its thing immediately. */ |
09bef843 | 3901 | newATTRSUB(floor, |
18916d0d | 3902 | newSVOP(OP_CONST, 0, newSVpvs_share("BEGIN")), |
5f66b61c AL |
3903 | NULL, |
3904 | NULL, | |
a0d0e21e | 3905 | append_elem(OP_LINESEQ, |
b1cb66bf | 3906 | append_elem(OP_LINESEQ, |
bd61b366 SS |
3907 | newSTATEOP(0, NULL, newUNOP(OP_REQUIRE, 0, idop)), |
3908 | newSTATEOP(0, NULL, veop)), | |
3909 | newSTATEOP(0, NULL, imop) )); | |
85e6fe83 | 3910 | |
70f5e4ed JH |
3911 | /* The "did you use incorrect case?" warning used to be here. |
3912 | * The problem is that on case-insensitive filesystems one | |
3913 | * might get false positives for "use" (and "require"): | |
3914 | * "use Strict" or "require CARP" will work. This causes | |
3915 | * portability problems for the script: in case-strict | |
3916 | * filesystems the script will stop working. | |
3917 | * | |
3918 | * The "incorrect case" warning checked whether "use Foo" | |
3919 | * imported "Foo" to your namespace, but that is wrong, too: | |
3920 | * there is no requirement nor promise in the language that | |
3921 | * a Foo.pm should or would contain anything in package "Foo". | |
3922 | * | |
3923 | * There is very little Configure-wise that can be done, either: | |
3924 | * the case-sensitivity of the build filesystem of Perl does not | |
3925 | * help in guessing the case-sensitivity of the runtime environment. | |
3926 | */ | |
18fc9488 | 3927 | |
c305c6a0 | 3928 | PL_hints |= HINT_BLOCK_SCOPE; |
53a7735b DM |
3929 | PL_parser->copline = NOLINE; |
3930 | PL_parser->expect = XSTATE; | |
8ec8fbef | 3931 | PL_cop_seqmax++; /* Purely for B::*'s benefit */ |
eb8433b7 NC |
3932 | |
3933 | #ifdef PERL_MAD | |
3934 | if (!PL_madskills) { | |
3935 | /* FIXME - don't allocate pegop if !PL_madskills */ | |
3936 | op_free(pegop); | |
1d866c12 | 3937 | return NULL; |
eb8433b7 NC |
3938 | } |
3939 | return pegop; | |
3940 | #endif | |
85e6fe83 LW |
3941 | } |
3942 | ||
7d3fb230 | 3943 | /* |
ccfc67b7 JH |
3944 | =head1 Embedding Functions |
3945 | ||
7d3fb230 BS |
3946 | =for apidoc load_module |
3947 | ||
3948 | Loads the module whose name is pointed to by the string part of name. | |
3949 | Note that the actual module name, not its filename, should be given. | |
3950 | Eg, "Foo::Bar" instead of "Foo/Bar.pm". flags can be any of | |
3951 | PERL_LOADMOD_DENY, PERL_LOADMOD_NOIMPORT, or PERL_LOADMOD_IMPORT_OPS | |
3952 | (or 0 for no flags). ver, if specified, provides version semantics | |
3953 | similar to C<use Foo::Bar VERSION>. The optional trailing SV* | |
3954 | arguments can be used to specify arguments to the module's import() | |
76f108ac JD |
3955 | method, similar to C<use Foo::Bar VERSION LIST>. They must be |
3956 | terminated with a final NULL pointer. Note that this list can only | |
3957 | be omitted when the PERL_LOADMOD_NOIMPORT flag has been used. | |
3958 | Otherwise at least a single NULL pointer to designate the default | |
3959 | import list is required. | |
7d3fb230 BS |
3960 | |
3961 | =cut */ | |
3962 | ||
e4783991 GS |
3963 | void |
3964 | Perl_load_module(pTHX_ U32 flags, SV *name, SV *ver, ...) | |
3965 | { | |
3966 | va_list args; | |
7918f24d NC |
3967 | |
3968 | PERL_ARGS_ASSERT_LOAD_MODULE; | |
3969 | ||
e4783991 GS |
3970 | va_start(args, ver); |
3971 | vload_module(flags, name, ver, &args); | |
3972 | va_end(args); | |
3973 | } | |
3974 | ||
3975 | #ifdef PERL_IMPLICIT_CONTEXT | |
3976 | void | |
3977 | Perl_load_module_nocontext(U32 flags, SV *name, SV *ver, ...) | |
3978 | { | |
3979 | dTHX; | |
3980 | va_list args; | |
7918f24d | 3981 | PERL_ARGS_ASSERT_LOAD_MODULE_NOCONTEXT; |
e4783991 GS |
3982 | va_start(args, ver); |
3983 | vload_module(flags, name, ver, &args); | |
3984 | va_end(args); | |
3985 | } | |
3986 | #endif | |
3987 | ||
3988 | void | |
3989 | Perl_vload_module(pTHX_ U32 flags, SV *name, SV *ver, va_list *args) | |
3990 | { | |
97aff369 | 3991 | dVAR; |
551405c4 | 3992 | OP *veop, *imop; |
551405c4 | 3993 | OP * const modname = newSVOP(OP_CONST, 0, name); |
7918f24d NC |
3994 | |
3995 | PERL_ARGS_ASSERT_VLOAD_MODULE; | |
3996 | ||
e4783991 GS |
3997 | modname->op_private |= OPpCONST_BARE; |
3998 | if (ver) { | |
3999 | veop = newSVOP(OP_CONST, 0, ver); | |
4000 | } | |
4001 | else | |
5f66b61c | 4002 | veop = NULL; |
e4783991 GS |
4003 | if (flags & PERL_LOADMOD_NOIMPORT) { |
4004 | imop = sawparens(newNULLLIST()); | |
4005 | } | |
4006 | else if (flags & PERL_LOADMOD_IMPORT_OPS) { | |
4007 | imop = va_arg(*args, OP*); | |
4008 | } | |
4009 | else { | |
4010 | SV *sv; | |
5f66b61c | 4011 | imop = NULL; |
e4783991 GS |
4012 | sv = va_arg(*args, SV*); |
4013 | while (sv) { | |
4014 | imop = append_elem(OP_LIST, imop, newSVOP(OP_CONST, 0, sv)); | |
4015 | sv = va_arg(*args, SV*); | |
4016 | } | |
4017 | } | |
81885997 | 4018 | |
53a7735b DM |
4019 | /* utilize() fakes up a BEGIN { require ..; import ... }, so make sure |
4020 | * that it has a PL_parser to play with while doing that, and also | |
4021 | * that it doesn't mess with any existing parser, by creating a tmp | |
4022 | * new parser with lex_start(). This won't actually be used for much, | |
4023 | * since pp_require() will create another parser for the real work. */ | |
4024 | ||
4025 | ENTER; | |
4026 | SAVEVPTR(PL_curcop); | |
5486870f | 4027 | lex_start(NULL, NULL, FALSE); |
53a7735b DM |
4028 | utilize(!(flags & PERL_LOADMOD_DENY), start_subparse(FALSE, 0), |
4029 | veop, modname, imop); | |
4030 | LEAVE; | |
e4783991 GS |
4031 | } |
4032 | ||
79072805 | 4033 | OP * |
850e8516 | 4034 | Perl_dofile(pTHX_ OP *term, I32 force_builtin) |
78ca652e | 4035 | { |
97aff369 | 4036 | dVAR; |
78ca652e | 4037 | OP *doop; |
a0714e2c | 4038 | GV *gv = NULL; |
78ca652e | 4039 | |
7918f24d NC |
4040 | PERL_ARGS_ASSERT_DOFILE; |
4041 | ||
850e8516 | 4042 | if (!force_builtin) { |
fafc274c | 4043 | gv = gv_fetchpvs("do", GV_NOTQUAL, SVt_PVCV); |
850e8516 | 4044 | if (!(gv && GvCVu(gv) && GvIMPORTED_CV(gv))) { |
a4fc7abc | 4045 | GV * const * const gvp = (GV**)hv_fetchs(PL_globalstash, "do", FALSE); |
a0714e2c | 4046 | gv = gvp ? *gvp : NULL; |
850e8516 RGS |
4047 | } |
4048 | } | |
78ca652e | 4049 | |
b9f751c0 | 4050 | if (gv && GvCVu(gv) && GvIMPORTED_CV(gv)) { |
78ca652e GS |
4051 | doop = ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, |
4052 | append_elem(OP_LIST, term, | |
4053 | scalar(newUNOP(OP_RV2CV, 0, | |
d4c19fe8 | 4054 | newGVOP(OP_GV, 0, gv)))))); |
78ca652e GS |
4055 | } |
4056 | else { | |
4057 | doop = newUNOP(OP_DOFILE, 0, scalar(term)); | |
4058 | } | |
4059 | return doop; | |
4060 | } | |
4061 | ||
4062 | OP * | |
864dbfa3 | 4063 | Perl_newSLICEOP(pTHX_ I32 flags, OP *subscript, OP *listval) |
79072805 LW |
4064 | { |
4065 | return newBINOP(OP_LSLICE, flags, | |
8990e307 LW |
4066 | list(force_list(subscript)), |
4067 | list(force_list(listval)) ); | |
79072805 LW |
4068 | } |
4069 | ||
76e3520e | 4070 | STATIC I32 |
504618e9 | 4071 | S_is_list_assignment(pTHX_ register const OP *o) |
79072805 | 4072 | { |
1496a290 AL |
4073 | unsigned type; |
4074 | U8 flags; | |
4075 | ||
11343788 | 4076 | if (!o) |
79072805 LW |
4077 | return TRUE; |
4078 | ||
1496a290 | 4079 | if ((o->op_type == OP_NULL) && (o->op_flags & OPf_KIDS)) |
11343788 | 4080 | o = cUNOPo->op_first; |
79072805 | 4081 | |
1496a290 AL |
4082 | flags = o->op_flags; |
4083 | type = o->op_type; | |
4084 | if (type == OP_COND_EXPR) { | |
504618e9 AL |
4085 | const I32 t = is_list_assignment(cLOGOPo->op_first->op_sibling); |
4086 | const I32 f = is_list_assignment(cLOGOPo->op_first->op_sibling->op_sibling); | |
79072805 LW |
4087 | |
4088 | if (t && f) | |
4089 | return TRUE; | |
4090 | if (t || f) | |
4091 | yyerror("Assignment to both a list and a scalar"); | |
4092 | return FALSE; | |
4093 | } | |
4094 | ||
1496a290 AL |
4095 | if (type == OP_LIST && |
4096 | (flags & OPf_WANT) == OPf_WANT_SCALAR && | |
95f0a2f1 SB |
4097 | o->op_private & OPpLVAL_INTRO) |
4098 | return FALSE; | |
4099 | ||
1496a290 AL |
4100 | if (type == OP_LIST || flags & OPf_PARENS || |
4101 | type == OP_RV2AV || type == OP_RV2HV || | |
4102 | type == OP_ASLICE || type == OP_HSLICE) | |
79072805 LW |
4103 | return TRUE; |
4104 | ||
1496a290 | 4105 | if (type == OP_PADAV || type == OP_PADHV) |
93a17b20 LW |
4106 | return TRUE; |
4107 | ||
1496a290 | 4108 | if (type == OP_RV2SV) |
79072805 LW |
4109 | return FALSE; |
4110 | ||
4111 | return FALSE; | |
4112 | } | |
4113 | ||
4114 | OP * | |
864dbfa3 | 4115 | Perl_newASSIGNOP(pTHX_ I32 flags, OP *left, I32 optype, OP *right) |
79072805 | 4116 | { |
97aff369 | 4117 | dVAR; |
11343788 | 4118 | OP *o; |
79072805 | 4119 | |
a0d0e21e | 4120 | if (optype) { |
c963b151 | 4121 | if (optype == OP_ANDASSIGN || optype == OP_ORASSIGN || optype == OP_DORASSIGN) { |
a0d0e21e LW |
4122 | return newLOGOP(optype, 0, |
4123 | mod(scalar(left), optype), | |
4124 | newUNOP(OP_SASSIGN, 0, scalar(right))); | |
4125 | } | |
4126 | else { | |
4127 | return newBINOP(optype, OPf_STACKED, | |
4128 | mod(scalar(left), optype), scalar(right)); | |
4129 | } | |
4130 | } | |
4131 | ||
504618e9 | 4132 | if (is_list_assignment(left)) { |
6dbe9451 NC |
4133 | static const char no_list_state[] = "Initialization of state variables" |
4134 | " in list context currently forbidden"; | |
10c8fecd | 4135 | OP *curop; |
fafafbaf | 4136 | bool maybe_common_vars = TRUE; |
10c8fecd | 4137 | |
3280af22 | 4138 | PL_modcount = 0; |
dbfe47cf RD |
4139 | /* Grandfathering $[ assignment here. Bletch.*/ |
4140 | /* Only simple assignments like C<< ($[) = 1 >> are allowed */ | |
fe5bfecd | 4141 | PL_eval_start = (left->op_type == OP_CONST) ? right : NULL; |
463ee0b2 | 4142 | left = mod(left, OP_AASSIGN); |
3280af22 NIS |
4143 | if (PL_eval_start) |
4144 | PL_eval_start = 0; | |
dbfe47cf | 4145 | else if (left->op_type == OP_CONST) { |
eb8433b7 | 4146 | /* FIXME for MAD */ |
dbfe47cf RD |
4147 | /* Result of assignment is always 1 (or we'd be dead already) */ |
4148 | return newSVOP(OP_CONST, 0, newSViv(1)); | |
a0d0e21e | 4149 | } |
10c8fecd GS |
4150 | curop = list(force_list(left)); |
4151 | o = newBINOP(OP_AASSIGN, flags, list(force_list(right)), curop); | |
eb160463 | 4152 | o->op_private = (U8)(0 | (flags >> 8)); |
dd2155a4 | 4153 | |
fafafbaf RD |
4154 | if ((left->op_type == OP_LIST |
4155 | || (left->op_type == OP_NULL && left->op_targ == OP_LIST))) | |
4156 | { | |
4157 | OP* lop = ((LISTOP*)left)->op_first; | |
4158 | maybe_common_vars = FALSE; | |
4159 | while (lop) { | |
4160 | if (lop->op_type == OP_PADSV || | |
4161 | lop->op_type == OP_PADAV || | |
4162 | lop->op_type == OP_PADHV || | |
4163 | lop->op_type == OP_PADANY) { | |
4164 | if (!(lop->op_private & OPpLVAL_INTRO)) | |
4165 | maybe_common_vars = TRUE; | |
4166 | ||
4167 | if (lop->op_private & OPpPAD_STATE) { | |
4168 | if (left->op_private & OPpLVAL_INTRO) { | |
4169 | /* Each variable in state($a, $b, $c) = ... */ | |
4170 | } | |
4171 | else { | |
4172 | /* Each state variable in | |
4173 | (state $a, my $b, our $c, $d, undef) = ... */ | |
4174 | } | |
4175 | yyerror(no_list_state); | |
4176 | } else { | |
4177 | /* Each my variable in | |
4178 | (state $a, my $b, our $c, $d, undef) = ... */ | |
4179 | } | |
4180 | } else if (lop->op_type == OP_UNDEF || | |
4181 | lop->op_type == OP_PUSHMARK) { | |
4182 | /* undef may be interesting in | |
4183 | (state $a, undef, state $c) */ | |
4184 | } else { | |
4185 | /* Other ops in the list. */ | |
4186 | maybe_common_vars = TRUE; | |
4187 | } | |
4188 | lop = lop->op_sibling; | |
4189 | } | |
4190 | } | |
4191 | else if ((left->op_private & OPpLVAL_INTRO) | |
4192 | && ( left->op_type == OP_PADSV | |
4193 | || left->op_type == OP_PADAV | |
4194 | || left->op_type == OP_PADHV | |
4195 | || left->op_type == OP_PADANY)) | |
4196 | { | |
4197 | maybe_common_vars = FALSE; | |
4198 | if (left->op_private & OPpPAD_STATE) { | |
4199 | /* All single variable list context state assignments, hence | |
4200 | state ($a) = ... | |
4201 | (state $a) = ... | |
4202 | state @a = ... | |
4203 | state (@a) = ... | |
4204 | (state @a) = ... | |
4205 | state %a = ... | |
4206 | state (%a) = ... | |
4207 | (state %a) = ... | |
4208 | */ | |
4209 | yyerror(no_list_state); | |
4210 | } | |
4211 | } | |
4212 | ||
dd2155a4 DM |
4213 | /* PL_generation sorcery: |
4214 | * an assignment like ($a,$b) = ($c,$d) is easier than | |
4215 | * ($a,$b) = ($c,$a), since there is no need for temporary vars. | |
4216 | * To detect whether there are common vars, the global var | |
4217 | * PL_generation is incremented for each assign op we compile. | |
4218 | * Then, while compiling the assign op, we run through all the | |
4219 | * variables on both sides of the assignment, setting a spare slot | |
4220 | * in each of them to PL_generation. If any of them already have | |
4221 | * that value, we know we've got commonality. We could use a | |
4222 | * single bit marker, but then we'd have to make 2 passes, first | |
4223 | * to clear the flag, then to test and set it. To find somewhere | |
931b58fb | 4224 | * to store these values, evil chicanery is done with SvUVX(). |
dd2155a4 DM |
4225 | */ |
4226 | ||
fafafbaf | 4227 | if (maybe_common_vars) { |
11343788 | 4228 | OP *lastop = o; |
3280af22 | 4229 | PL_generation++; |
11343788 | 4230 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
22c35a8c | 4231 | if (PL_opargs[curop->op_type] & OA_DANGEROUS) { |
79072805 | 4232 | if (curop->op_type == OP_GV) { |
638eceb6 | 4233 | GV *gv = cGVOPx_gv(curop); |
169d2d72 NC |
4234 | if (gv == PL_defgv |
4235 | || (int)GvASSIGN_GENERATION(gv) == PL_generation) | |
79072805 | 4236 | break; |
169d2d72 | 4237 | GvASSIGN_GENERATION_set(gv, PL_generation); |
79072805 | 4238 | } |
748a9306 LW |
4239 | else if (curop->op_type == OP_PADSV || |
4240 | curop->op_type == OP_PADAV || | |
4241 | curop->op_type == OP_PADHV || | |
dd2155a4 DM |
4242 | curop->op_type == OP_PADANY) |
4243 | { | |
4244 | if (PAD_COMPNAME_GEN(curop->op_targ) | |
92251a1e | 4245 | == (STRLEN)PL_generation) |
748a9306 | 4246 | break; |
b162af07 | 4247 | PAD_COMPNAME_GEN_set(curop->op_targ, PL_generation); |
dd2155a4 | 4248 | |
748a9306 | 4249 | } |
79072805 LW |
4250 | else if (curop->op_type == OP_RV2CV) |
4251 | break; | |
4252 | else if (curop->op_type == OP_RV2SV || | |
4253 | curop->op_type == OP_RV2AV || | |
4254 | curop->op_type == OP_RV2HV || | |
4255 | curop->op_type == OP_RV2GV) { | |
4256 | if (lastop->op_type != OP_GV) /* funny deref? */ | |
4257 | break; | |
4258 | } | |
1167e5da | 4259 | else if (curop->op_type == OP_PUSHRE) { |
b3f5893f | 4260 | #ifdef USE_ITHREADS |
20e98b0f | 4261 | if (((PMOP*)curop)->op_pmreplrootu.op_pmtargetoff) { |
159b6efe | 4262 | GV *const gv = MUTABLE_GV(PAD_SVl(((PMOP*)curop)->op_pmreplrootu.op_pmtargetoff)); |
169d2d72 NC |
4263 | if (gv == PL_defgv |
4264 | || (int)GvASSIGN_GENERATION(gv) == PL_generation) | |
1167e5da | 4265 | break; |
169d2d72 | 4266 | GvASSIGN_GENERATION_set(gv, PL_generation); |
20e98b0f NC |
4267 | } |
4268 | #else | |
4269 | GV *const gv | |
4270 | = ((PMOP*)curop)->op_pmreplrootu.op_pmtargetgv; | |
4271 | if (gv) { | |
4272 | if (gv == PL_defgv | |
4273 | || (int)GvASSIGN_GENERATION(gv) == PL_generation) | |
4274 | break; | |
169d2d72 | 4275 | GvASSIGN_GENERATION_set(gv, PL_generation); |
b2ffa427 | 4276 | } |
20e98b0f | 4277 | #endif |
1167e5da | 4278 | } |
79072805 LW |
4279 | else |
4280 | break; | |
4281 | } | |
4282 | lastop = curop; | |
4283 | } | |
11343788 | 4284 | if (curop != o) |
10c8fecd | 4285 | o->op_private |= OPpASSIGN_COMMON; |
461824dc | 4286 | } |
9fdc7570 | 4287 | |
e9cc17ba | 4288 | if (right && right->op_type == OP_SPLIT && !PL_madskills) { |
1496a290 AL |
4289 | OP* tmpop = ((LISTOP*)right)->op_first; |
4290 | if (tmpop && (tmpop->op_type == OP_PUSHRE)) { | |
551405c4 | 4291 | PMOP * const pm = (PMOP*)tmpop; |
c07a80fd | 4292 | if (left->op_type == OP_RV2AV && |
4293 | !(left->op_private & OPpLVAL_INTRO) && | |
11343788 | 4294 | !(o->op_private & OPpASSIGN_COMMON) ) |
c07a80fd | 4295 | { |
4296 | tmpop = ((UNOP*)left)->op_first; | |
20e98b0f NC |
4297 | if (tmpop->op_type == OP_GV |
4298 | #ifdef USE_ITHREADS | |
4299 | && !pm->op_pmreplrootu.op_pmtargetoff | |
4300 | #else | |
4301 | && !pm->op_pmreplrootu.op_pmtargetgv | |
4302 | #endif | |
4303 | ) { | |
971a9dd3 | 4304 | #ifdef USE_ITHREADS |
20e98b0f NC |
4305 | pm->op_pmreplrootu.op_pmtargetoff |
4306 | = cPADOPx(tmpop)->op_padix; | |
971a9dd3 GS |
4307 | cPADOPx(tmpop)->op_padix = 0; /* steal it */ |
4308 | #else | |
20e98b0f | 4309 | pm->op_pmreplrootu.op_pmtargetgv |
159b6efe | 4310 | = MUTABLE_GV(cSVOPx(tmpop)->op_sv); |
a0714e2c | 4311 | cSVOPx(tmpop)->op_sv = NULL; /* steal it */ |
971a9dd3 | 4312 | #endif |
c07a80fd | 4313 | pm->op_pmflags |= PMf_ONCE; |
11343788 | 4314 | tmpop = cUNOPo->op_first; /* to list (nulled) */ |
c07a80fd | 4315 | tmpop = ((UNOP*)tmpop)->op_first; /* to pushmark */ |
5f66b61c | 4316 | tmpop->op_sibling = NULL; /* don't free split */ |
c07a80fd | 4317 | right->op_next = tmpop->op_next; /* fix starting loc */ |
11343788 | 4318 | op_free(o); /* blow off assign */ |
54310121 | 4319 | right->op_flags &= ~OPf_WANT; |
a5f75d66 | 4320 | /* "I don't know and I don't care." */ |
c07a80fd | 4321 | return right; |
4322 | } | |
4323 | } | |
4324 | else { | |
e6438c1a | 4325 | if (PL_modcount < RETURN_UNLIMITED_NUMBER && |
c07a80fd | 4326 | ((LISTOP*)right)->op_last->op_type == OP_CONST) |
4327 | { | |
4328 | SV *sv = ((SVOP*)((LISTOP*)right)->op_last)->op_sv; | |
b8de32d5 | 4329 | if (SvIOK(sv) && SvIVX(sv) == 0) |
3280af22 | 4330 | sv_setiv(sv, PL_modcount+1); |
c07a80fd | 4331 | } |
4332 | } | |
4333 | } | |
4334 | } | |
11343788 | 4335 | return o; |
79072805 LW |
4336 | } |
4337 | if (!right) | |
4338 | right = newOP(OP_UNDEF, 0); | |
4339 | if (right->op_type == OP_READLINE) { | |
4340 | right->op_flags |= OPf_STACKED; | |
463ee0b2 | 4341 | return newBINOP(OP_NULL, flags, mod(scalar(left), OP_SASSIGN), scalar(right)); |
79072805 | 4342 | } |
a0d0e21e | 4343 | else { |
3280af22 | 4344 | PL_eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ |
11343788 | 4345 | o = newBINOP(OP_SASSIGN, flags, |
463ee0b2 | 4346 | scalar(right), mod(scalar(left), OP_SASSIGN) ); |
3280af22 NIS |
4347 | if (PL_eval_start) |
4348 | PL_eval_start = 0; | |
748a9306 | 4349 | else { |
27aaedc1 | 4350 | if (!PL_madskills) { /* assignment to $[ is ignored when making a mad dump */ |
55b67815 | 4351 | deprecate("assignment to $["); |
27aaedc1 GG |
4352 | op_free(o); |
4353 | o = newSVOP(OP_CONST, 0, newSViv(CopARYBASE_get(&PL_compiling))); | |
4354 | o->op_private |= OPpCONST_ARYBASE; | |
4355 | } | |
a0d0e21e LW |
4356 | } |
4357 | } | |
11343788 | 4358 | return o; |
79072805 LW |
4359 | } |
4360 | ||
4361 | OP * | |
864dbfa3 | 4362 | Perl_newSTATEOP(pTHX_ I32 flags, char *label, OP *o) |
79072805 | 4363 | { |
27da23d5 | 4364 | dVAR; |
e1ec3a88 | 4365 | const U32 seq = intro_my(); |
79072805 LW |
4366 | register COP *cop; |
4367 | ||
b7dc083c | 4368 | NewOp(1101, cop, 1, COP); |
57843af0 | 4369 | if (PERLDB_LINE && CopLINE(PL_curcop) && PL_curstash != PL_debstash) { |
8990e307 | 4370 | cop->op_type = OP_DBSTATE; |
22c35a8c | 4371 | cop->op_ppaddr = PL_ppaddr[ OP_DBSTATE ]; |
8990e307 LW |
4372 | } |
4373 | else { | |
4374 | cop->op_type = OP_NEXTSTATE; | |
22c35a8c | 4375 | cop->op_ppaddr = PL_ppaddr[ OP_NEXTSTATE ]; |
8990e307 | 4376 | } |
eb160463 | 4377 | cop->op_flags = (U8)flags; |
623e6609 | 4378 | CopHINTS_set(cop, PL_hints); |
ff0cee69 | 4379 | #ifdef NATIVE_HINTS |
4380 | cop->op_private |= NATIVE_HINTS; | |
4381 | #endif | |
623e6609 | 4382 | CopHINTS_set(&PL_compiling, CopHINTS_get(cop)); |
79072805 LW |
4383 | cop->op_next = (OP*)cop; |
4384 | ||
bbce6d69 | 4385 | cop->cop_seq = seq; |
7b0bddfa | 4386 | /* CopARYBASE is now "virtual", in that it's stored as a flag bit in |
c28fe1ec NC |
4387 | CopHINTS and a possible value in cop_hints_hash, so no need to copy it. |
4388 | */ | |
72dc9ed5 | 4389 | cop->cop_warnings = DUP_WARNINGS(PL_curcop->cop_warnings); |
c28fe1ec NC |
4390 | cop->cop_hints_hash = PL_curcop->cop_hints_hash; |
4391 | if (cop->cop_hints_hash) { | |
cbb1fbea | 4392 | HINTS_REFCNT_LOCK; |
c28fe1ec | 4393 | cop->cop_hints_hash->refcounted_he_refcnt++; |
cbb1fbea | 4394 | HINTS_REFCNT_UNLOCK; |
b3ca2e83 | 4395 | } |
dca6062a | 4396 | if (label) { |
dca6062a | 4397 | cop->cop_hints_hash |
012da8e5 | 4398 | = Perl_store_cop_label(aTHX_ cop->cop_hints_hash, label); |
dca6062a NC |
4399 | |
4400 | PL_hints |= HINT_BLOCK_SCOPE; | |
4401 | /* It seems that we need to defer freeing this pointer, as other parts | |
4402 | of the grammar end up wanting to copy it after this op has been | |
4403 | created. */ | |
4404 | SAVEFREEPV(label); | |
dca6062a | 4405 | } |
79072805 | 4406 | |
53a7735b | 4407 | if (PL_parser && PL_parser->copline == NOLINE) |
57843af0 | 4408 | CopLINE_set(cop, CopLINE(PL_curcop)); |
79072805 | 4409 | else { |
53a7735b DM |
4410 | CopLINE_set(cop, PL_parser->copline); |
4411 | if (PL_parser) | |
4412 | PL_parser->copline = NOLINE; | |
79072805 | 4413 | } |
57843af0 | 4414 | #ifdef USE_ITHREADS |
f4dd75d9 | 4415 | CopFILE_set(cop, CopFILE(PL_curcop)); /* XXX share in a pvtable? */ |
57843af0 | 4416 | #else |
f4dd75d9 | 4417 | CopFILEGV_set(cop, CopFILEGV(PL_curcop)); |
57843af0 | 4418 | #endif |
11faa288 | 4419 | CopSTASH_set(cop, PL_curstash); |
79072805 | 4420 | |
65269a95 TB |
4421 | if ((PERLDB_LINE || PERLDB_SAVESRC) && PL_curstash != PL_debstash) { |
4422 | /* this line can have a breakpoint - store the cop in IV */ | |
80a702cd RGS |
4423 | AV *av = CopFILEAVx(PL_curcop); |
4424 | if (av) { | |
4425 | SV * const * const svp = av_fetch(av, (I32)CopLINE(cop), FALSE); | |
4426 | if (svp && *svp != &PL_sv_undef ) { | |
4427 | (void)SvIOK_on(*svp); | |
4428 | SvIV_set(*svp, PTR2IV(cop)); | |
4429 | } | |
1eb1540c | 4430 | } |
93a17b20 LW |
4431 | } |
4432 | ||
f6f3a1fe RGS |
4433 | if (flags & OPf_SPECIAL) |
4434 | op_null((OP*)cop); | |
722969e2 | 4435 | return prepend_elem(OP_LINESEQ, (OP*)cop, o); |
79072805 LW |
4436 | } |
4437 | ||
bbce6d69 | 4438 | |
79072805 | 4439 | OP * |
864dbfa3 | 4440 | Perl_newLOGOP(pTHX_ I32 type, I32 flags, OP *first, OP *other) |
79072805 | 4441 | { |
27da23d5 | 4442 | dVAR; |
7918f24d NC |
4443 | |
4444 | PERL_ARGS_ASSERT_NEWLOGOP; | |
4445 | ||
883ffac3 CS |
4446 | return new_logop(type, flags, &first, &other); |
4447 | } | |
4448 | ||
3bd495df | 4449 | STATIC OP * |
71c4dbc3 VP |
4450 | S_search_const(pTHX_ OP *o) |
4451 | { | |
4452 | PERL_ARGS_ASSERT_SEARCH_CONST; | |
4453 | ||
4454 | switch (o->op_type) { | |
4455 | case OP_CONST: | |
4456 | return o; | |
4457 | case OP_NULL: | |
4458 | if (o->op_flags & OPf_KIDS) | |
4459 | return search_const(cUNOPo->op_first); | |
4460 | break; | |
4461 | case OP_LEAVE: | |
4462 | case OP_SCOPE: | |
4463 | case OP_LINESEQ: | |
4464 | { | |
4465 | OP *kid; | |
4466 | if (!(o->op_flags & OPf_KIDS)) | |
4467 | return NULL; | |
4468 | kid = cLISTOPo->op_first; | |
4469 | do { | |
4470 | switch (kid->op_type) { | |
4471 | case OP_ENTER: | |
4472 | case OP_NULL: | |
4473 | case OP_NEXTSTATE: | |
4474 | kid = kid->op_sibling; | |
4475 | break; | |
4476 | default: | |
4477 | if (kid != cLISTOPo->op_last) | |
4478 | return NULL; | |
4479 | goto last; | |
4480 | } | |
4481 | } while (kid); | |
4482 | if (!kid) | |
4483 | kid = cLISTOPo->op_last; | |
4484 | last: | |
4485 | return search_const(kid); | |
4486 | } | |
4487 | } | |
4488 | ||
4489 | return NULL; | |
4490 | } | |
4491 | ||
4492 | STATIC OP * | |
cea2e8a9 | 4493 | S_new_logop(pTHX_ I32 type, I32 flags, OP** firstp, OP** otherp) |
883ffac3 | 4494 | { |
27da23d5 | 4495 | dVAR; |
79072805 | 4496 | LOGOP *logop; |
11343788 | 4497 | OP *o; |
71c4dbc3 VP |
4498 | OP *first; |
4499 | OP *other; | |
4500 | OP *cstop = NULL; | |
edbe35ea | 4501 | int prepend_not = 0; |
79072805 | 4502 | |
7918f24d NC |
4503 | PERL_ARGS_ASSERT_NEW_LOGOP; |
4504 | ||
71c4dbc3 VP |
4505 | first = *firstp; |
4506 | other = *otherp; | |
4507 | ||
a0d0e21e LW |
4508 | if (type == OP_XOR) /* Not short circuit, but here by precedence. */ |
4509 | return newBINOP(type, flags, scalar(first), scalar(other)); | |
4510 | ||
8990e307 | 4511 | scalarboolean(first); |
edbe35ea | 4512 | /* optimize AND and OR ops that have NOTs as children */ |
68726e16 | 4513 | if (first->op_type == OP_NOT |
b6214b80 | 4514 | && (first->op_flags & OPf_KIDS) |
edbe35ea VP |
4515 | && ((first->op_flags & OPf_SPECIAL) /* unless ($x) { } */ |
4516 | || (other->op_type == OP_NOT)) /* if (!$x && !$y) { } */ | |
b6214b80 | 4517 | && !PL_madskills) { |
79072805 LW |
4518 | if (type == OP_AND || type == OP_OR) { |
4519 | if (type == OP_AND) | |
4520 | type = OP_OR; | |
4521 | else | |
4522 | type = OP_AND; | |
07f3cdf5 | 4523 | op_null(first); |
edbe35ea | 4524 | if (other->op_type == OP_NOT) { /* !a AND|OR !b => !(a OR|AND b) */ |
07f3cdf5 | 4525 | op_null(other); |
edbe35ea VP |
4526 | prepend_not = 1; /* prepend a NOT op later */ |
4527 | } | |
79072805 LW |
4528 | } |
4529 | } | |
71c4dbc3 VP |
4530 | /* search for a constant op that could let us fold the test */ |
4531 | if ((cstop = search_const(first))) { | |
4532 | if (cstop->op_private & OPpCONST_STRICT) | |
4533 | no_bareword_allowed(cstop); | |
4534 | else if ((cstop->op_private & OPpCONST_BARE) && ckWARN(WARN_BAREWORD)) | |
989dfb19 | 4535 | Perl_warner(aTHX_ packWARN(WARN_BAREWORD), "Bareword found in conditional"); |
71c4dbc3 VP |
4536 | if ((type == OP_AND && SvTRUE(((SVOP*)cstop)->op_sv)) || |
4537 | (type == OP_OR && !SvTRUE(((SVOP*)cstop)->op_sv)) || | |
4538 | (type == OP_DOR && !SvOK(((SVOP*)cstop)->op_sv))) { | |
5f66b61c | 4539 | *firstp = NULL; |
d6fee5c7 DM |
4540 | if (other->op_type == OP_CONST) |
4541 | other->op_private |= OPpCONST_SHORTCIRCUIT; | |
eb8433b7 NC |
4542 | if (PL_madskills) { |
4543 | OP *newop = newUNOP(OP_NULL, 0, other); | |
4544 | op_getmad(first, newop, '1'); | |
4545 | newop->op_targ = type; /* set "was" field */ | |
4546 | return newop; | |
4547 | } | |
4548 | op_free(first); | |
dd3e51dc VP |
4549 | if (other->op_type == OP_LEAVE) |
4550 | other = newUNOP(OP_NULL, OPf_SPECIAL, other); | |
79072805 LW |
4551 | return other; |
4552 | } | |
4553 | else { | |
7921d0f2 | 4554 | /* check for C<my $x if 0>, or C<my($x,$y) if 0> */ |
6867be6d | 4555 | const OP *o2 = other; |
7921d0f2 DM |
4556 | if ( ! (o2->op_type == OP_LIST |
4557 | && (( o2 = cUNOPx(o2)->op_first)) | |
4558 | && o2->op_type == OP_PUSHMARK | |
4559 | && (( o2 = o2->op_sibling)) ) | |
4560 | ) | |
4561 | o2 = other; | |
4562 | if ((o2->op_type == OP_PADSV || o2->op_type == OP_PADAV | |
4563 | || o2->op_type == OP_PADHV) | |
4564 | && o2->op_private & OPpLVAL_INTRO | |
52351015 | 4565 | && !(o2->op_private & OPpPAD_STATE) |
7921d0f2 DM |
4566 | && ckWARN(WARN_DEPRECATED)) |
4567 | { | |
4568 | Perl_warner(aTHX_ packWARN(WARN_DEPRECATED), | |
4569 | "Deprecated use of my() in false conditional"); | |
4570 | } | |
4571 | ||
5f66b61c | 4572 | *otherp = NULL; |
d6fee5c7 DM |
4573 | if (first->op_type == OP_CONST) |
4574 | first->op_private |= OPpCONST_SHORTCIRCUIT; | |
eb8433b7 NC |
4575 | if (PL_madskills) { |
4576 | first = newUNOP(OP_NULL, 0, first); | |
4577 | op_getmad(other, first, '2'); | |
4578 | first->op_targ = type; /* set "was" field */ | |
4579 | } | |
4580 | else | |
4581 | op_free(other); | |
79072805 LW |
4582 | return first; |
4583 | } | |
4584 | } | |
041457d9 DM |
4585 | else if ((first->op_flags & OPf_KIDS) && type != OP_DOR |
4586 | && ckWARN(WARN_MISC)) /* [#24076] Don't warn for <FH> err FOO. */ | |
59e10468 | 4587 | { |
b22e6366 AL |
4588 | const OP * const k1 = ((UNOP*)first)->op_first; |
4589 | const OP * const k2 = k1->op_sibling; | |
a6006777 | 4590 | OPCODE warnop = 0; |
4591 | switch (first->op_type) | |
4592 | { | |
4593 | case OP_NULL: | |
4594 | if (k2 && k2->op_type == OP_READLINE | |
4595 | && (k2->op_flags & OPf_STACKED) | |
1c846c1f | 4596 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
72b16652 | 4597 | { |
a6006777 | 4598 | warnop = k2->op_type; |
72b16652 | 4599 | } |
a6006777 | 4600 | break; |
4601 | ||
4602 | case OP_SASSIGN: | |
68dc0745 | 4603 | if (k1->op_type == OP_READDIR |
4604 | || k1->op_type == OP_GLOB | |
72b16652 | 4605 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) |
68dc0745 | 4606 | || k1->op_type == OP_EACH) |
72b16652 GS |
4607 | { |
4608 | warnop = ((k1->op_type == OP_NULL) | |
eb160463 | 4609 | ? (OPCODE)k1->op_targ : k1->op_type); |
72b16652 | 4610 | } |
a6006777 | 4611 | break; |
4612 | } | |
8ebc5c01 | 4613 | if (warnop) { |
6867be6d | 4614 | const line_t oldline = CopLINE(PL_curcop); |
53a7735b | 4615 | CopLINE_set(PL_curcop, PL_parser->copline); |
9014280d | 4616 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
599cee73 | 4617 | "Value of %s%s can be \"0\"; test with defined()", |
22c35a8c | 4618 | PL_op_desc[warnop], |
68dc0745 | 4619 | ((warnop == OP_READLINE || warnop == OP_GLOB) |
4620 | ? " construct" : "() operator")); | |
57843af0 | 4621 | CopLINE_set(PL_curcop, oldline); |
8ebc5c01 | 4622 | } |
a6006777 | 4623 | } |
79072805 LW |
4624 | |
4625 | if (!other) | |
4626 | return first; | |
4627 | ||
c963b151 | 4628 | if (type == OP_ANDASSIGN || type == OP_ORASSIGN || type == OP_DORASSIGN) |
a0d0e21e LW |
4629 | other->op_private |= OPpASSIGN_BACKWARDS; /* other is an OP_SASSIGN */ |
4630 | ||
b7dc083c | 4631 | NewOp(1101, logop, 1, LOGOP); |
79072805 | 4632 | |
eb160463 | 4633 | logop->op_type = (OPCODE)type; |
22c35a8c | 4634 | logop->op_ppaddr = PL_ppaddr[type]; |
79072805 | 4635 | logop->op_first = first; |
585ec06d | 4636 | logop->op_flags = (U8)(flags | OPf_KIDS); |
79072805 | 4637 | logop->op_other = LINKLIST(other); |
eb160463 | 4638 | logop->op_private = (U8)(1 | (flags >> 8)); |
79072805 LW |
4639 | |
4640 | /* establish postfix order */ | |
4641 | logop->op_next = LINKLIST(first); | |
4642 | first->op_next = (OP*)logop; | |
4643 | first->op_sibling = other; | |
4644 | ||
463d09e6 RGS |
4645 | CHECKOP(type,logop); |
4646 | ||
edbe35ea | 4647 | o = newUNOP(prepend_not ? OP_NOT : OP_NULL, 0, (OP*)logop); |
11343788 | 4648 | other->op_next = o; |
79072805 | 4649 | |
11343788 | 4650 | return o; |
79072805 LW |
4651 | } |
4652 | ||
4653 | OP * | |
864dbfa3 | 4654 | Perl_newCONDOP(pTHX_ I32 flags, OP *first, OP *trueop, OP *falseop) |
79072805 | 4655 | { |
27da23d5 | 4656 | dVAR; |
1a67a97c SM |
4657 | LOGOP *logop; |
4658 | OP *start; | |
11343788 | 4659 | OP *o; |
71c4dbc3 | 4660 | OP *cstop; |
79072805 | 4661 | |
7918f24d NC |
4662 | PERL_ARGS_ASSERT_NEWCONDOP; |
4663 | ||
b1cb66bf | 4664 | if (!falseop) |
4665 | return newLOGOP(OP_AND, 0, first, trueop); | |
4666 | if (!trueop) | |
4667 | return newLOGOP(OP_OR, 0, first, falseop); | |
79072805 | 4668 | |
8990e307 | 4669 | scalarboolean(first); |
71c4dbc3 | 4670 | if ((cstop = search_const(first))) { |
5b6782b2 | 4671 | /* Left or right arm of the conditional? */ |
71c4dbc3 | 4672 | const bool left = SvTRUE(((SVOP*)cstop)->op_sv); |
5b6782b2 NC |
4673 | OP *live = left ? trueop : falseop; |
4674 | OP *const dead = left ? falseop : trueop; | |
71c4dbc3 VP |
4675 | if (cstop->op_private & OPpCONST_BARE && |
4676 | cstop->op_private & OPpCONST_STRICT) { | |
4677 | no_bareword_allowed(cstop); | |
b22e6366 | 4678 | } |
5b6782b2 NC |
4679 | if (PL_madskills) { |
4680 | /* This is all dead code when PERL_MAD is not defined. */ | |
4681 | live = newUNOP(OP_NULL, 0, live); | |
4682 | op_getmad(first, live, 'C'); | |
4683 | op_getmad(dead, live, left ? 'e' : 't'); | |
4684 | } else { | |
4685 | op_free(first); | |
4686 | op_free(dead); | |
79072805 | 4687 | } |
ef9da979 FC |
4688 | if (live->op_type == OP_LEAVE) |
4689 | live = newUNOP(OP_NULL, OPf_SPECIAL, live); | |
5b6782b2 | 4690 | return live; |
79072805 | 4691 | } |
1a67a97c SM |
4692 | NewOp(1101, logop, 1, LOGOP); |
4693 | logop->op_type = OP_COND_EXPR; | |
4694 | logop->op_ppaddr = PL_ppaddr[OP_COND_EXPR]; | |
4695 | logop->op_first = first; | |
585ec06d | 4696 | logop->op_flags = (U8)(flags | OPf_KIDS); |
eb160463 | 4697 | logop->op_private = (U8)(1 | (flags >> 8)); |
1a67a97c SM |
4698 | logop->op_other = LINKLIST(trueop); |
4699 | logop->op_next = LINKLIST(falseop); | |
79072805 | 4700 | |
463d09e6 RGS |
4701 | CHECKOP(OP_COND_EXPR, /* that's logop->op_type */ |
4702 | logop); | |
79072805 LW |
4703 | |
4704 | /* establish postfix order */ | |
1a67a97c SM |
4705 | start = LINKLIST(first); |
4706 | first->op_next = (OP*)logop; | |
79072805 | 4707 | |
b1cb66bf | 4708 | first->op_sibling = trueop; |
4709 | trueop->op_sibling = falseop; | |
1a67a97c | 4710 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
79072805 | 4711 | |
1a67a97c | 4712 | trueop->op_next = falseop->op_next = o; |
79072805 | 4713 | |
1a67a97c | 4714 | o->op_next = start; |
11343788 | 4715 | return o; |
79072805 LW |
4716 | } |
4717 | ||
4718 | OP * | |
864dbfa3 | 4719 | Perl_newRANGE(pTHX_ I32 flags, OP *left, OP *right) |
79072805 | 4720 | { |
27da23d5 | 4721 | dVAR; |
1a67a97c | 4722 | LOGOP *range; |
79072805 LW |
4723 | OP *flip; |
4724 | OP *flop; | |
1a67a97c | 4725 | OP *leftstart; |
11343788 | 4726 | OP *o; |
79072805 | 4727 | |
7918f24d NC |
4728 | PERL_ARGS_ASSERT_NEWRANGE; |
4729 | ||
1a67a97c | 4730 | NewOp(1101, range, 1, LOGOP); |
79072805 | 4731 | |
1a67a97c SM |
4732 | range->op_type = OP_RANGE; |
4733 | range->op_ppaddr = PL_ppaddr[OP_RANGE]; | |
4734 | range->op_first = left; | |
4735 | range->op_flags = OPf_KIDS; | |
4736 | leftstart = LINKLIST(left); | |
4737 | range->op_other = LINKLIST(right); | |
eb160463 | 4738 | range->op_private = (U8)(1 | (flags >> 8)); |
79072805 LW |
4739 | |
4740 | left->op_sibling = right; | |
4741 | ||
1a67a97c SM |
4742 | range->op_next = (OP*)range; |
4743 | flip = newUNOP(OP_FLIP, flags, (OP*)range); | |
79072805 | 4744 | flop = newUNOP(OP_FLOP, 0, flip); |
11343788 | 4745 | o = newUNOP(OP_NULL, 0, flop); |
79072805 | 4746 | linklist(flop); |
1a67a97c | 4747 | range->op_next = leftstart; |
79072805 LW |
4748 | |
4749 | left->op_next = flip; | |
4750 | right->op_next = flop; | |
4751 | ||
1a67a97c SM |
4752 | range->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
4753 | sv_upgrade(PAD_SV(range->op_targ), SVt_PVNV); | |
ed6116ce | 4754 | flip->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 LW |
4755 | sv_upgrade(PAD_SV(flip->op_targ), SVt_PVNV); |
4756 | ||
4757 | flip->op_private = left->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
4758 | flop->op_private = right->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
4759 | ||
11343788 | 4760 | flip->op_next = o; |
79072805 | 4761 | if (!flip->op_private || !flop->op_private) |
11343788 | 4762 | linklist(o); /* blow off optimizer unless constant */ |
79072805 | 4763 | |
11343788 | 4764 | return o; |
79072805 LW |
4765 | } |
4766 | ||
4767 | OP * | |
864dbfa3 | 4768 | Perl_newLOOPOP(pTHX_ I32 flags, I32 debuggable, OP *expr, OP *block) |
79072805 | 4769 | { |
97aff369 | 4770 | dVAR; |
463ee0b2 | 4771 | OP* listop; |
11343788 | 4772 | OP* o; |
73d840c0 | 4773 | const bool once = block && block->op_flags & OPf_SPECIAL && |
a0d0e21e | 4774 | (block->op_type == OP_ENTERSUB || block->op_type == OP_NULL); |
46c461b5 AL |
4775 | |
4776 | PERL_UNUSED_ARG(debuggable); | |
93a17b20 | 4777 | |
463ee0b2 LW |
4778 | if (expr) { |
4779 | if (once && expr->op_type == OP_CONST && !SvTRUE(((SVOP*)expr)->op_sv)) | |
4780 | return block; /* do {} while 0 does once */ | |
fb73857a | 4781 | if (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB |
4782 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB)) { | |
774d564b | 4783 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 4784 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 | 4785 | } else if (expr->op_flags & OPf_KIDS) { |
46c461b5 AL |
4786 | const OP * const k1 = ((UNOP*)expr)->op_first; |
4787 | const OP * const k2 = k1 ? k1->op_sibling : NULL; | |
55d729e4 | 4788 | switch (expr->op_type) { |
1c846c1f | 4789 | case OP_NULL: |
55d729e4 GS |
4790 | if (k2 && k2->op_type == OP_READLINE |
4791 | && (k2->op_flags & OPf_STACKED) | |
1c846c1f | 4792 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
55d729e4 | 4793 | expr = newUNOP(OP_DEFINED, 0, expr); |
1c846c1f | 4794 | break; |
55d729e4 GS |
4795 | |
4796 | case OP_SASSIGN: | |
06dc7ac6 | 4797 | if (k1 && (k1->op_type == OP_READDIR |
55d729e4 | 4798 | || k1->op_type == OP_GLOB |
6531c3e6 | 4799 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) |
06dc7ac6 | 4800 | || k1->op_type == OP_EACH)) |
55d729e4 GS |
4801 | expr = newUNOP(OP_DEFINED, 0, expr); |
4802 | break; | |
4803 | } | |
774d564b | 4804 | } |
463ee0b2 | 4805 | } |
93a17b20 | 4806 | |
e1548254 RGS |
4807 | /* if block is null, the next append_elem() would put UNSTACK, a scalar |
4808 | * op, in listop. This is wrong. [perl #27024] */ | |
4809 | if (!block) | |
4810 | block = newOP(OP_NULL, 0); | |
8990e307 | 4811 | listop = append_elem(OP_LINESEQ, block, newOP(OP_UNSTACK, 0)); |
883ffac3 | 4812 | o = new_logop(OP_AND, 0, &expr, &listop); |
463ee0b2 | 4813 | |
883ffac3 CS |
4814 | if (listop) |
4815 | ((LISTOP*)listop)->op_last->op_next = LINKLIST(o); | |
79072805 | 4816 | |
11343788 MB |
4817 | if (once && o != listop) |
4818 | o->op_next = ((LOGOP*)cUNOPo->op_first)->op_other; | |
79072805 | 4819 | |
11343788 MB |
4820 | if (o == listop) |
4821 | o = newUNOP(OP_NULL, 0, o); /* or do {} while 1 loses outer block */ | |
748a9306 | 4822 | |
11343788 MB |
4823 | o->op_flags |= flags; |
4824 | o = scope(o); | |
4825 | o->op_flags |= OPf_SPECIAL; /* suppress POPBLOCK curpm restoration*/ | |
4826 | return o; | |
79072805 LW |
4827 | } |
4828 | ||
4829 | OP * | |
a034e688 DM |
4830 | Perl_newWHILEOP(pTHX_ I32 flags, I32 debuggable, LOOP *loop, I32 |
4831 | whileline, OP *expr, OP *block, OP *cont, I32 has_my) | |
79072805 | 4832 | { |
27da23d5 | 4833 | dVAR; |
79072805 | 4834 | OP *redo; |
c445ea15 | 4835 | OP *next = NULL; |
79072805 | 4836 | OP *listop; |
11343788 | 4837 | OP *o; |
1ba6ee2b | 4838 | U8 loopflags = 0; |
46c461b5 AL |
4839 | |
4840 | PERL_UNUSED_ARG(debuggable); | |
79072805 | 4841 | |
2d03de9c AL |
4842 | if (expr) { |
4843 | if (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB | |
4844 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB)) { | |
4845 | expr = newUNOP(OP_DEFINED, 0, | |
4846 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); | |
4847 | } else if (expr->op_flags & OPf_KIDS) { | |
4848 | const OP * const k1 = ((UNOP*)expr)->op_first; | |
4849 | const OP * const k2 = (k1) ? k1->op_sibling : NULL; | |
4850 | switch (expr->op_type) { | |
4851 | case OP_NULL: | |
4852 | if (k2 && k2->op_type == OP_READLINE | |
4853 | && (k2->op_flags & OPf_STACKED) | |
4854 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) | |
4855 | expr = newUNOP(OP_DEFINED, 0, expr); | |
4856 | break; | |
55d729e4 | 4857 | |
2d03de9c | 4858 | case OP_SASSIGN: |
72c8de1a | 4859 | if (k1 && (k1->op_type == OP_READDIR |
2d03de9c AL |
4860 | || k1->op_type == OP_GLOB |
4861 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) | |
72c8de1a | 4862 | || k1->op_type == OP_EACH)) |
2d03de9c AL |
4863 | expr = newUNOP(OP_DEFINED, 0, expr); |
4864 | break; | |
4865 | } | |
55d729e4 | 4866 | } |
748a9306 | 4867 | } |
79072805 LW |
4868 | |
4869 | if (!block) | |
4870 | block = newOP(OP_NULL, 0); | |
a034e688 | 4871 | else if (cont || has_my) { |
87246558 GS |
4872 | block = scope(block); |
4873 | } | |
79072805 | 4874 | |
1ba6ee2b | 4875 | if (cont) { |
79072805 | 4876 | next = LINKLIST(cont); |
1ba6ee2b | 4877 | } |
fb73857a | 4878 | if (expr) { |
551405c4 | 4879 | OP * const unstack = newOP(OP_UNSTACK, 0); |
85538317 GS |
4880 | if (!next) |
4881 | next = unstack; | |
4882 | cont = append_elem(OP_LINESEQ, cont, unstack); | |
fb73857a | 4883 | } |
79072805 | 4884 | |
ce3e5c45 | 4885 | assert(block); |
463ee0b2 | 4886 | listop = append_list(OP_LINESEQ, (LISTOP*)block, (LISTOP*)cont); |
ce3e5c45 | 4887 | assert(listop); |
79072805 LW |
4888 | redo = LINKLIST(listop); |
4889 | ||
4890 | if (expr) { | |
53a7735b | 4891 | PL_parser->copline = (line_t)whileline; |
883ffac3 CS |
4892 | scalar(listop); |
4893 | o = new_logop(OP_AND, 0, &expr, &listop); | |
11343788 | 4894 | if (o == expr && o->op_type == OP_CONST && !SvTRUE(cSVOPo->op_sv)) { |
85e6fe83 | 4895 | op_free(expr); /* oops, it's a while (0) */ |
463ee0b2 | 4896 | op_free((OP*)loop); |
5f66b61c | 4897 | return NULL; /* listop already freed by new_logop */ |
463ee0b2 | 4898 | } |
883ffac3 | 4899 | if (listop) |
497b47a8 | 4900 | ((LISTOP*)listop)->op_last->op_next = |
883ffac3 | 4901 | (o == listop ? redo : LINKLIST(o)); |
79072805 LW |
4902 | } |
4903 | else | |
11343788 | 4904 | o = listop; |
79072805 LW |
4905 | |
4906 | if (!loop) { | |
b7dc083c | 4907 | NewOp(1101,loop,1,LOOP); |
79072805 | 4908 | loop->op_type = OP_ENTERLOOP; |
22c35a8c | 4909 | loop->op_ppaddr = PL_ppaddr[OP_ENTERLOOP]; |
79072805 LW |
4910 | loop->op_private = 0; |
4911 | loop->op_next = (OP*)loop; | |
4912 | } | |
4913 | ||
11343788 | 4914 | o = newBINOP(OP_LEAVELOOP, 0, (OP*)loop, o); |
79072805 LW |
4915 | |
4916 | loop->op_redoop = redo; | |
11343788 | 4917 | loop->op_lastop = o; |
1ba6ee2b | 4918 | o->op_private |= loopflags; |
79072805 LW |
4919 | |
4920 | if (next) | |
4921 | loop->op_nextop = next; | |
4922 | else | |
11343788 | 4923 | loop->op_nextop = o; |
79072805 | 4924 | |
11343788 MB |
4925 | o->op_flags |= flags; |
4926 | o->op_private |= (flags >> 8); | |
4927 | return o; | |
79072805 LW |
4928 | } |
4929 | ||
4930 | OP * | |
66a1b24b | 4931 | Perl_newFOROP(pTHX_ I32 flags, char *label, line_t forline, OP *sv, OP *expr, OP *block, OP *cont) |
79072805 | 4932 | { |
27da23d5 | 4933 | dVAR; |
79072805 | 4934 | LOOP *loop; |
fb73857a | 4935 | OP *wop; |
4bbc6d12 | 4936 | PADOFFSET padoff = 0; |
4633a7c4 | 4937 | I32 iterflags = 0; |
241416b8 | 4938 | I32 iterpflags = 0; |
d4c19fe8 | 4939 | OP *madsv = NULL; |
79072805 | 4940 | |
7918f24d NC |
4941 | PERL_ARGS_ASSERT_NEWFOROP; |
4942 | ||
79072805 | 4943 | if (sv) { |
85e6fe83 | 4944 | if (sv->op_type == OP_RV2SV) { /* symbol table variable */ |
241416b8 | 4945 | iterpflags = sv->op_private & OPpOUR_INTRO; /* for our $x () */ |
748a9306 | 4946 | sv->op_type = OP_RV2GV; |
22c35a8c | 4947 | sv->op_ppaddr = PL_ppaddr[OP_RV2GV]; |
0be9a6bb RH |
4948 | |
4949 | /* The op_type check is needed to prevent a possible segfault | |
4950 | * if the loop variable is undeclared and 'strict vars' is in | |
4951 | * effect. This is illegal but is nonetheless parsed, so we | |
4952 | * may reach this point with an OP_CONST where we're expecting | |
4953 | * an OP_GV. | |
4954 | */ | |
4955 | if (cUNOPx(sv)->op_first->op_type == OP_GV | |
4956 | && cGVOPx_gv(cUNOPx(sv)->op_first) == PL_defgv) | |
0d863452 | 4957 | iterpflags |= OPpITER_DEF; |
79072805 | 4958 | } |
85e6fe83 | 4959 | else if (sv->op_type == OP_PADSV) { /* private variable */ |
241416b8 | 4960 | iterpflags = sv->op_private & OPpLVAL_INTRO; /* for my $x () */ |
85e6fe83 | 4961 | padoff = sv->op_targ; |
eb8433b7 NC |
4962 | if (PL_madskills) |
4963 | madsv = sv; | |
4964 | else { | |
4965 | sv->op_targ = 0; | |
4966 | op_free(sv); | |
4967 | } | |
5f66b61c | 4968 | sv = NULL; |
85e6fe83 | 4969 | } |
79072805 | 4970 | else |
cea2e8a9 | 4971 | Perl_croak(aTHX_ "Can't use %s for loop variable", PL_op_desc[sv->op_type]); |
f8503592 NC |
4972 | if (padoff) { |
4973 | SV *const namesv = PAD_COMPNAME_SV(padoff); | |
4974 | STRLEN len; | |
4975 | const char *const name = SvPV_const(namesv, len); | |
4976 | ||
4977 | if (len == 2 && name[0] == '$' && name[1] == '_') | |
4978 | iterpflags |= OPpITER_DEF; | |
4979 | } | |
79072805 LW |
4980 | } |
4981 | else { | |
9f7d9405 | 4982 | const PADOFFSET offset = pad_findmy("$_"); |
00b1698f | 4983 | if (offset == NOT_IN_PAD || PAD_COMPNAME_FLAGS_isOUR(offset)) { |
aabe9514 RGS |
4984 | sv = newGVOP(OP_GV, 0, PL_defgv); |
4985 | } | |
4986 | else { | |
4987 | padoff = offset; | |
aabe9514 | 4988 | } |
0d863452 | 4989 | iterpflags |= OPpITER_DEF; |
79072805 | 4990 | } |
5f05dabc | 4991 | if (expr->op_type == OP_RV2AV || expr->op_type == OP_PADAV) { |
89ea2908 | 4992 | expr = mod(force_list(scalar(ref(expr, OP_ITER))), OP_GREPSTART); |
4633a7c4 LW |
4993 | iterflags |= OPf_STACKED; |
4994 | } | |
89ea2908 GA |
4995 | else if (expr->op_type == OP_NULL && |
4996 | (expr->op_flags & OPf_KIDS) && | |
4997 | ((BINOP*)expr)->op_first->op_type == OP_FLOP) | |
4998 | { | |
4999 | /* Basically turn for($x..$y) into the same as for($x,$y), but we | |
5000 | * set the STACKED flag to indicate that these values are to be | |
5001 | * treated as min/max values by 'pp_iterinit'. | |
5002 | */ | |
d4c19fe8 | 5003 | const UNOP* const flip = (UNOP*)((UNOP*)((BINOP*)expr)->op_first)->op_first; |
551405c4 | 5004 | LOGOP* const range = (LOGOP*) flip->op_first; |
66a1b24b AL |
5005 | OP* const left = range->op_first; |
5006 | OP* const right = left->op_sibling; | |
5152d7c7 | 5007 | LISTOP* listop; |
89ea2908 GA |
5008 | |
5009 | range->op_flags &= ~OPf_KIDS; | |
5f66b61c | 5010 | range->op_first = NULL; |
89ea2908 | 5011 | |
5152d7c7 | 5012 | listop = (LISTOP*)newLISTOP(OP_LIST, 0, left, right); |
1a67a97c SM |
5013 | listop->op_first->op_next = range->op_next; |
5014 | left->op_next = range->op_other; | |
5152d7c7 GS |
5015 | right->op_next = (OP*)listop; |
5016 | listop->op_next = listop->op_first; | |
89ea2908 | 5017 | |
eb8433b7 NC |
5018 | #ifdef PERL_MAD |
5019 | op_getmad(expr,(OP*)listop,'O'); | |
5020 | #else | |
89ea2908 | 5021 | op_free(expr); |
eb8433b7 | 5022 | #endif |
5152d7c7 | 5023 | expr = (OP*)(listop); |
93c66552 | 5024 | op_null(expr); |
89ea2908 GA |
5025 | iterflags |= OPf_STACKED; |
5026 | } | |
5027 | else { | |
5028 | expr = mod(force_list(expr), OP_GREPSTART); | |
5029 | } | |
5030 | ||
4633a7c4 | 5031 | loop = (LOOP*)list(convert(OP_ENTERITER, iterflags, |
89ea2908 | 5032 | append_elem(OP_LIST, expr, scalar(sv)))); |
85e6fe83 | 5033 | assert(!loop->op_next); |
241416b8 | 5034 | /* for my $x () sets OPpLVAL_INTRO; |
14f338dc | 5035 | * for our $x () sets OPpOUR_INTRO */ |
c5661c80 | 5036 | loop->op_private = (U8)iterpflags; |
b7dc083c | 5037 | #ifdef PL_OP_SLAB_ALLOC |
155aba94 GS |
5038 | { |
5039 | LOOP *tmp; | |
5040 | NewOp(1234,tmp,1,LOOP); | |
bd5f3bc4 | 5041 | Copy(loop,tmp,1,LISTOP); |
bfafaa29 | 5042 | S_op_destroy(aTHX_ (OP*)loop); |
155aba94 GS |
5043 | loop = tmp; |
5044 | } | |
b7dc083c | 5045 | #else |
10edeb5d | 5046 | loop = (LOOP*)PerlMemShared_realloc(loop, sizeof(LOOP)); |
1c846c1f | 5047 | #endif |
85e6fe83 | 5048 | loop->op_targ = padoff; |
a034e688 | 5049 | wop = newWHILEOP(flags, 1, loop, forline, newOP(OP_ITER, 0), block, cont, 0); |
eb8433b7 NC |
5050 | if (madsv) |
5051 | op_getmad(madsv, (OP*)loop, 'v'); | |
53a7735b | 5052 | PL_parser->copline = forline; |
fb73857a | 5053 | return newSTATEOP(0, label, wop); |
79072805 LW |
5054 | } |
5055 | ||
8990e307 | 5056 | OP* |
864dbfa3 | 5057 | Perl_newLOOPEX(pTHX_ I32 type, OP *label) |
8990e307 | 5058 | { |
97aff369 | 5059 | dVAR; |
11343788 | 5060 | OP *o; |
2d8e6c8d | 5061 | |
7918f24d NC |
5062 | PERL_ARGS_ASSERT_NEWLOOPEX; |
5063 | ||
8990e307 | 5064 | if (type != OP_GOTO || label->op_type == OP_CONST) { |
cdaebead MB |
5065 | /* "last()" means "last" */ |
5066 | if (label->op_type == OP_STUB && (label->op_flags & OPf_PARENS)) | |
5067 | o = newOP(type, OPf_SPECIAL); | |
5068 | else { | |
ea71c68d | 5069 | o = newPVOP(type, 0, savesharedpv(label->op_type == OP_CONST |
4ea561bc | 5070 | ? SvPV_nolen_const(((SVOP*)label)->op_sv) |
666ea192 | 5071 | : "")); |
cdaebead | 5072 | } |
eb8433b7 NC |
5073 | #ifdef PERL_MAD |
5074 | op_getmad(label,o,'L'); | |
5075 | #else | |
8990e307 | 5076 | op_free(label); |
eb8433b7 | 5077 | #endif |
8990e307 LW |
5078 | } |
5079 | else { | |
e3aba57a RGS |
5080 | /* Check whether it's going to be a goto &function */ |
5081 | if (label->op_type == OP_ENTERSUB | |
5082 | && !(label->op_flags & OPf_STACKED)) | |
a0d0e21e | 5083 | label = newUNOP(OP_REFGEN, 0, mod(label, OP_REFGEN)); |
11343788 | 5084 | o = newUNOP(type, OPf_STACKED, label); |
8990e307 | 5085 | } |
3280af22 | 5086 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 5087 | return o; |
8990e307 LW |
5088 | } |
5089 | ||
0d863452 RH |
5090 | /* if the condition is a literal array or hash |
5091 | (or @{ ... } etc), make a reference to it. | |
5092 | */ | |
5093 | STATIC OP * | |
5094 | S_ref_array_or_hash(pTHX_ OP *cond) | |
5095 | { | |
5096 | if (cond | |
5097 | && (cond->op_type == OP_RV2AV | |
5098 | || cond->op_type == OP_PADAV | |
5099 | || cond->op_type == OP_RV2HV | |
5100 | || cond->op_type == OP_PADHV)) | |
5101 | ||
5102 | return newUNOP(OP_REFGEN, | |
5103 | 0, mod(cond, OP_REFGEN)); | |
5104 | ||
5105 | else | |
5106 | return cond; | |
5107 | } | |
5108 | ||
5109 | /* These construct the optree fragments representing given() | |
5110 | and when() blocks. | |
5111 | ||
5112 | entergiven and enterwhen are LOGOPs; the op_other pointer | |
5113 | points up to the associated leave op. We need this so we | |
5114 | can put it in the context and make break/continue work. | |
5115 | (Also, of course, pp_enterwhen will jump straight to | |
5116 | op_other if the match fails.) | |
5117 | */ | |
5118 | ||
4136a0f7 | 5119 | STATIC OP * |
0d863452 RH |
5120 | S_newGIVWHENOP(pTHX_ OP *cond, OP *block, |
5121 | I32 enter_opcode, I32 leave_opcode, | |
5122 | PADOFFSET entertarg) | |
5123 | { | |
97aff369 | 5124 | dVAR; |
0d863452 RH |
5125 | LOGOP *enterop; |
5126 | OP *o; | |
5127 | ||
7918f24d NC |
5128 | PERL_ARGS_ASSERT_NEWGIVWHENOP; |
5129 | ||
0d863452 | 5130 | NewOp(1101, enterop, 1, LOGOP); |
61a59f30 | 5131 | enterop->op_type = (Optype)enter_opcode; |
0d863452 RH |
5132 | enterop->op_ppaddr = PL_ppaddr[enter_opcode]; |
5133 | enterop->op_flags = (U8) OPf_KIDS; | |
5134 | enterop->op_targ = ((entertarg == NOT_IN_PAD) ? 0 : entertarg); | |
5135 | enterop->op_private = 0; | |
5136 | ||
5137 | o = newUNOP(leave_opcode, 0, (OP *) enterop); | |
5138 | ||
5139 | if (cond) { | |
5140 | enterop->op_first = scalar(cond); | |
5141 | cond->op_sibling = block; | |
5142 | ||
5143 | o->op_next = LINKLIST(cond); | |
5144 | cond->op_next = (OP *) enterop; | |
5145 | } | |
5146 | else { | |
5147 | /* This is a default {} block */ | |
5148 | enterop->op_first = block; | |
5149 | enterop->op_flags |= OPf_SPECIAL; | |
5150 | ||
5151 | o->op_next = (OP *) enterop; | |
5152 | } | |
5153 | ||
5154 | CHECKOP(enter_opcode, enterop); /* Currently does nothing, since | |
5155 | entergiven and enterwhen both | |
5156 | use ck_null() */ | |
5157 | ||
5158 | enterop->op_next = LINKLIST(block); | |
5159 | block->op_next = enterop->op_other = o; | |
5160 | ||
5161 | return o; | |
5162 | } | |
5163 | ||
5164 | /* Does this look like a boolean operation? For these purposes | |
5165 | a boolean operation is: | |
5166 | - a subroutine call [*] | |
5167 | - a logical connective | |
5168 | - a comparison operator | |
5169 | - a filetest operator, with the exception of -s -M -A -C | |
5170 | - defined(), exists() or eof() | |
5171 | - /$re/ or $foo =~ /$re/ | |
5172 | ||
5173 | [*] possibly surprising | |
5174 | */ | |
4136a0f7 | 5175 | STATIC bool |
ef519e13 | 5176 | S_looks_like_bool(pTHX_ const OP *o) |
0d863452 | 5177 | { |
97aff369 | 5178 | dVAR; |
7918f24d NC |
5179 | |
5180 | PERL_ARGS_ASSERT_LOOKS_LIKE_BOOL; | |
5181 | ||
0d863452 RH |
5182 | switch(o->op_type) { |
5183 | case OP_OR: | |
f92e1a16 | 5184 | case OP_DOR: |
0d863452 RH |
5185 | return looks_like_bool(cLOGOPo->op_first); |
5186 | ||
5187 | case OP_AND: | |
5188 | return ( | |
5189 | looks_like_bool(cLOGOPo->op_first) | |
5190 | && looks_like_bool(cLOGOPo->op_first->op_sibling)); | |
5191 | ||
1e1d4b91 JJ |
5192 | case OP_NULL: |
5193 | return ( | |
5194 | o->op_flags & OPf_KIDS | |
5195 | && looks_like_bool(cUNOPo->op_first)); | |
5196 | ||
5341b2b7 JJ |
5197 | case OP_SCALAR: |
5198 | return looks_like_bool(cUNOPo->op_first); | |
5199 | ||
5200 | ||
0d863452 RH |
5201 | case OP_ENTERSUB: |
5202 | ||
5203 | case OP_NOT: case OP_XOR: | |
0d863452 RH |
5204 | |
5205 | case OP_EQ: case OP_NE: case OP_LT: | |
5206 | case OP_GT: case OP_LE: case OP_GE: | |
5207 | ||
5208 | case OP_I_EQ: case OP_I_NE: case OP_I_LT: | |
5209 | case OP_I_GT: case OP_I_LE: case OP_I_GE: | |
5210 | ||
5211 | case OP_SEQ: case OP_SNE: case OP_SLT: | |
5212 | case OP_SGT: case OP_SLE: case OP_SGE: | |
5213 | ||
5214 | case OP_SMARTMATCH: | |
5215 | ||
5216 | case OP_FTRREAD: case OP_FTRWRITE: case OP_FTREXEC: | |
5217 | case OP_FTEREAD: case OP_FTEWRITE: case OP_FTEEXEC: | |
5218 | case OP_FTIS: case OP_FTEOWNED: case OP_FTROWNED: | |
5219 | case OP_FTZERO: case OP_FTSOCK: case OP_FTCHR: | |
5220 | case OP_FTBLK: case OP_FTFILE: case OP_FTDIR: | |
5221 | case OP_FTPIPE: case OP_FTLINK: case OP_FTSUID: | |
5222 | case OP_FTSGID: case OP_FTSVTX: case OP_FTTTY: | |
5223 | case OP_FTTEXT: case OP_FTBINARY: | |
5224 | ||
5225 | case OP_DEFINED: case OP_EXISTS: | |
5226 | case OP_MATCH: case OP_EOF: | |
5227 | ||
f118ea0d RGS |
5228 | case OP_FLOP: |
5229 | ||
0d863452 RH |
5230 | return TRUE; |
5231 | ||
5232 | case OP_CONST: | |
5233 | /* Detect comparisons that have been optimized away */ | |
5234 | if (cSVOPo->op_sv == &PL_sv_yes | |
5235 | || cSVOPo->op_sv == &PL_sv_no) | |
5236 | ||
5237 | return TRUE; | |
6e03d743 RGS |
5238 | else |
5239 | return FALSE; | |
6e03d743 | 5240 | |
0d863452 RH |
5241 | /* FALL THROUGH */ |
5242 | default: | |
5243 | return FALSE; | |
5244 | } | |
5245 | } | |
5246 | ||
5247 | OP * | |
5248 | Perl_newGIVENOP(pTHX_ OP *cond, OP *block, PADOFFSET defsv_off) | |
5249 | { | |
97aff369 | 5250 | dVAR; |
7918f24d | 5251 | PERL_ARGS_ASSERT_NEWGIVENOP; |
0d863452 RH |
5252 | return newGIVWHENOP( |
5253 | ref_array_or_hash(cond), | |
5254 | block, | |
5255 | OP_ENTERGIVEN, OP_LEAVEGIVEN, | |
5256 | defsv_off); | |
5257 | } | |
5258 | ||
5259 | /* If cond is null, this is a default {} block */ | |
5260 | OP * | |
5261 | Perl_newWHENOP(pTHX_ OP *cond, OP *block) | |
5262 | { | |
ef519e13 | 5263 | const bool cond_llb = (!cond || looks_like_bool(cond)); |
0d863452 RH |
5264 | OP *cond_op; |
5265 | ||
7918f24d NC |
5266 | PERL_ARGS_ASSERT_NEWWHENOP; |
5267 | ||
0d863452 RH |
5268 | if (cond_llb) |
5269 | cond_op = cond; | |
5270 | else { | |
5271 | cond_op = newBINOP(OP_SMARTMATCH, OPf_SPECIAL, | |
5272 | newDEFSVOP(), | |
5273 | scalar(ref_array_or_hash(cond))); | |
5274 | } | |
5275 | ||
5276 | return newGIVWHENOP( | |
5277 | cond_op, | |
5278 | append_elem(block->op_type, block, newOP(OP_BREAK, OPf_SPECIAL)), | |
5279 | OP_ENTERWHEN, OP_LEAVEWHEN, 0); | |
5280 | } | |
5281 | ||
7dafbf52 DM |
5282 | /* |
5283 | =for apidoc cv_undef | |
5284 | ||
5285 | Clear out all the active components of a CV. This can happen either | |
5286 | by an explicit C<undef &foo>, or by the reference count going to zero. | |
5287 | In the former case, we keep the CvOUTSIDE pointer, so that any anonymous | |
5288 | children can still follow the full lexical scope chain. | |
5289 | ||
5290 | =cut | |
5291 | */ | |
5292 | ||
79072805 | 5293 | void |
864dbfa3 | 5294 | Perl_cv_undef(pTHX_ CV *cv) |
79072805 | 5295 | { |
27da23d5 | 5296 | dVAR; |
503de470 | 5297 | |
7918f24d NC |
5298 | PERL_ARGS_ASSERT_CV_UNDEF; |
5299 | ||
503de470 DM |
5300 | DEBUG_X(PerlIO_printf(Perl_debug_log, |
5301 | "CV undef: cv=0x%"UVxf" comppad=0x%"UVxf"\n", | |
5302 | PTR2UV(cv), PTR2UV(PL_comppad)) | |
5303 | ); | |
5304 | ||
a636914a | 5305 | #ifdef USE_ITHREADS |
aed2304a | 5306 | if (CvFILE(cv) && !CvISXSUB(cv)) { |
35f1c1c7 | 5307 | /* for XSUBs CvFILE point directly to static memory; __FILE__ */ |
a636914a | 5308 | Safefree(CvFILE(cv)); |
a636914a | 5309 | } |
b3123a61 | 5310 | CvFILE(cv) = NULL; |
a636914a RH |
5311 | #endif |
5312 | ||
aed2304a | 5313 | if (!CvISXSUB(cv) && CvROOT(cv)) { |
bb172083 | 5314 | if (SvTYPE(cv) == SVt_PVCV && CvDEPTH(cv)) |
cea2e8a9 | 5315 | Perl_croak(aTHX_ "Can't undef active subroutine"); |
8990e307 | 5316 | ENTER; |
a0d0e21e | 5317 | |
f3548bdc | 5318 | PAD_SAVE_SETNULLPAD(); |
a0d0e21e | 5319 | |
282f25c9 | 5320 | op_free(CvROOT(cv)); |
5f66b61c AL |
5321 | CvROOT(cv) = NULL; |
5322 | CvSTART(cv) = NULL; | |
8990e307 | 5323 | LEAVE; |
79072805 | 5324 | } |
ad64d0ec | 5325 | SvPOK_off(MUTABLE_SV(cv)); /* forget prototype */ |
a0714e2c | 5326 | CvGV(cv) = NULL; |
a3985cdc DM |
5327 | |
5328 | pad_undef(cv); | |
5329 | ||
7dafbf52 DM |
5330 | /* remove CvOUTSIDE unless this is an undef rather than a free */ |
5331 | if (!SvREFCNT(cv) && CvOUTSIDE(cv)) { | |
5332 | if (!CvWEAKOUTSIDE(cv)) | |
5333 | SvREFCNT_dec(CvOUTSIDE(cv)); | |
601f1833 | 5334 | CvOUTSIDE(cv) = NULL; |
7dafbf52 | 5335 | } |
beab0874 | 5336 | if (CvCONST(cv)) { |
ad64d0ec | 5337 | SvREFCNT_dec(MUTABLE_SV(CvXSUBANY(cv).any_ptr)); |
beab0874 JT |
5338 | CvCONST_off(cv); |
5339 | } | |
d04ba589 | 5340 | if (CvISXSUB(cv) && CvXSUB(cv)) { |
96a5add6 | 5341 | CvXSUB(cv) = NULL; |
50762d59 | 5342 | } |
7dafbf52 DM |
5343 | /* delete all flags except WEAKOUTSIDE */ |
5344 | CvFLAGS(cv) &= CVf_WEAKOUTSIDE; | |
79072805 LW |
5345 | } |
5346 | ||
3fe9a6f1 | 5347 | void |
cbf82dd0 NC |
5348 | Perl_cv_ckproto_len(pTHX_ const CV *cv, const GV *gv, const char *p, |
5349 | const STRLEN len) | |
5350 | { | |
7918f24d NC |
5351 | PERL_ARGS_ASSERT_CV_CKPROTO_LEN; |
5352 | ||
cbf82dd0 NC |
5353 | /* Can't just use a strcmp on the prototype, as CONSTSUBs "cheat" by |
5354 | relying on SvCUR, and doubling up the buffer to hold CvFILE(). */ | |
5355 | if (((!p != !SvPOK(cv)) /* One has prototype, one has not. */ | |
5356 | || (p && (len != SvCUR(cv) /* Not the same length. */ | |
5357 | || memNE(p, SvPVX_const(cv), len)))) | |
5358 | && ckWARN_d(WARN_PROTOTYPE)) { | |
2d03de9c | 5359 | SV* const msg = sv_newmortal(); |
a0714e2c | 5360 | SV* name = NULL; |
3fe9a6f1 | 5361 | |
5362 | if (gv) | |
bd61b366 | 5363 | gv_efullname3(name = sv_newmortal(), gv, NULL); |
6502358f | 5364 | sv_setpvs(msg, "Prototype mismatch:"); |
46fc3d4c | 5365 | if (name) |
be2597df | 5366 | Perl_sv_catpvf(aTHX_ msg, " sub %"SVf, SVfARG(name)); |
3fe9a6f1 | 5367 | if (SvPOK(cv)) |
be2597df | 5368 | Perl_sv_catpvf(aTHX_ msg, " (%"SVf")", SVfARG(cv)); |
ebe643b9 | 5369 | else |
396482e1 GA |
5370 | sv_catpvs(msg, ": none"); |
5371 | sv_catpvs(msg, " vs "); | |
46fc3d4c | 5372 | if (p) |
cbf82dd0 | 5373 | Perl_sv_catpvf(aTHX_ msg, "(%.*s)", (int) len, p); |
46fc3d4c | 5374 | else |
396482e1 | 5375 | sv_catpvs(msg, "none"); |
be2597df | 5376 | Perl_warner(aTHX_ packWARN(WARN_PROTOTYPE), "%"SVf, SVfARG(msg)); |
3fe9a6f1 | 5377 | } |
5378 | } | |
5379 | ||
35f1c1c7 SB |
5380 | static void const_sv_xsub(pTHX_ CV* cv); |
5381 | ||
beab0874 | 5382 | /* |
ccfc67b7 JH |
5383 | |
5384 | =head1 Optree Manipulation Functions | |
5385 | ||
beab0874 JT |
5386 | =for apidoc cv_const_sv |
5387 | ||
5388 | If C<cv> is a constant sub eligible for inlining. returns the constant | |
5389 | value returned by the sub. Otherwise, returns NULL. | |
5390 | ||
5391 | Constant subs can be created with C<newCONSTSUB> or as described in | |
5392 | L<perlsub/"Constant Functions">. | |
5393 | ||
5394 | =cut | |
5395 | */ | |
760ac839 | 5396 | SV * |
d45f5b30 | 5397 | Perl_cv_const_sv(pTHX_ const CV *const cv) |
760ac839 | 5398 | { |
96a5add6 | 5399 | PERL_UNUSED_CONTEXT; |
5069cc75 NC |
5400 | if (!cv) |
5401 | return NULL; | |
5402 | if (!(SvTYPE(cv) == SVt_PVCV || SvTYPE(cv) == SVt_PVFM)) | |
5403 | return NULL; | |
ad64d0ec | 5404 | return CvCONST(cv) ? MUTABLE_SV(CvXSUBANY(cv).any_ptr) : NULL; |
fe5e78ed | 5405 | } |
760ac839 | 5406 | |
b5c19bd7 DM |
5407 | /* op_const_sv: examine an optree to determine whether it's in-lineable. |
5408 | * Can be called in 3 ways: | |
5409 | * | |
5410 | * !cv | |
5411 | * look for a single OP_CONST with attached value: return the value | |
5412 | * | |
5413 | * cv && CvCLONE(cv) && !CvCONST(cv) | |
5414 | * | |
5415 | * examine the clone prototype, and if contains only a single | |
5416 | * OP_CONST referencing a pad const, or a single PADSV referencing | |
5417 | * an outer lexical, return a non-zero value to indicate the CV is | |
5418 | * a candidate for "constizing" at clone time | |
5419 | * | |
5420 | * cv && CvCONST(cv) | |
5421 | * | |
5422 | * We have just cloned an anon prototype that was marked as a const | |
5423 | * candidiate. Try to grab the current value, and in the case of | |
5424 | * PADSV, ignore it if it has multiple references. Return the value. | |
5425 | */ | |
5426 | ||
fe5e78ed | 5427 | SV * |
6867be6d | 5428 | Perl_op_const_sv(pTHX_ const OP *o, CV *cv) |
fe5e78ed | 5429 | { |
97aff369 | 5430 | dVAR; |
a0714e2c | 5431 | SV *sv = NULL; |
fe5e78ed | 5432 | |
c631f32b GG |
5433 | if (PL_madskills) |
5434 | return NULL; | |
5435 | ||
0f79a09d | 5436 | if (!o) |
a0714e2c | 5437 | return NULL; |
1c846c1f NIS |
5438 | |
5439 | if (o->op_type == OP_LINESEQ && cLISTOPo->op_first) | |
fe5e78ed GS |
5440 | o = cLISTOPo->op_first->op_sibling; |
5441 | ||
5442 | for (; o; o = o->op_next) { | |
890ce7af | 5443 | const OPCODE type = o->op_type; |
fe5e78ed | 5444 | |
1c846c1f | 5445 | if (sv && o->op_next == o) |
fe5e78ed | 5446 | return sv; |
e576b457 JT |
5447 | if (o->op_next != o) { |
5448 | if (type == OP_NEXTSTATE || type == OP_NULL || type == OP_PUSHMARK) | |
5449 | continue; | |
5450 | if (type == OP_DBSTATE) | |
5451 | continue; | |
5452 | } | |
54310121 | 5453 | if (type == OP_LEAVESUB || type == OP_RETURN) |
5454 | break; | |
5455 | if (sv) | |
a0714e2c | 5456 | return NULL; |
7766f137 | 5457 | if (type == OP_CONST && cSVOPo->op_sv) |
5dc0d613 | 5458 | sv = cSVOPo->op_sv; |
b5c19bd7 | 5459 | else if (cv && type == OP_CONST) { |
dd2155a4 | 5460 | sv = PAD_BASE_SV(CvPADLIST(cv), o->op_targ); |
beab0874 | 5461 | if (!sv) |
a0714e2c | 5462 | return NULL; |
b5c19bd7 DM |
5463 | } |
5464 | else if (cv && type == OP_PADSV) { | |
5465 | if (CvCONST(cv)) { /* newly cloned anon */ | |
5466 | sv = PAD_BASE_SV(CvPADLIST(cv), o->op_targ); | |
5467 | /* the candidate should have 1 ref from this pad and 1 ref | |
5468 | * from the parent */ | |
5469 | if (!sv || SvREFCNT(sv) != 2) | |
a0714e2c | 5470 | return NULL; |
beab0874 | 5471 | sv = newSVsv(sv); |
b5c19bd7 DM |
5472 | SvREADONLY_on(sv); |
5473 | return sv; | |
5474 | } | |
5475 | else { | |
5476 | if (PAD_COMPNAME_FLAGS(o->op_targ) & SVf_FAKE) | |
5477 | sv = &PL_sv_undef; /* an arbitrary non-null value */ | |
beab0874 | 5478 | } |
760ac839 | 5479 | } |
b5c19bd7 | 5480 | else { |
a0714e2c | 5481 | return NULL; |
b5c19bd7 | 5482 | } |
760ac839 LW |
5483 | } |
5484 | return sv; | |
5485 | } | |
5486 | ||
eb8433b7 NC |
5487 | #ifdef PERL_MAD |
5488 | OP * | |
5489 | #else | |
09bef843 | 5490 | void |
eb8433b7 | 5491 | #endif |
09bef843 SB |
5492 | Perl_newMYSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, OP *block) |
5493 | { | |
99129197 NC |
5494 | #if 0 |
5495 | /* This would be the return value, but the return cannot be reached. */ | |
eb8433b7 NC |
5496 | OP* pegop = newOP(OP_NULL, 0); |
5497 | #endif | |
5498 | ||
46c461b5 AL |
5499 | PERL_UNUSED_ARG(floor); |
5500 | ||
09bef843 SB |
5501 | if (o) |
5502 | SAVEFREEOP(o); | |
5503 | if (proto) | |
5504 | SAVEFREEOP(proto); | |
5505 | if (attrs) | |
5506 | SAVEFREEOP(attrs); | |
5507 | if (block) | |
5508 | SAVEFREEOP(block); | |
5509 | Perl_croak(aTHX_ "\"my sub\" not yet implemented"); | |
eb8433b7 | 5510 | #ifdef PERL_MAD |
99129197 | 5511 | NORETURN_FUNCTION_END; |
eb8433b7 | 5512 | #endif |
09bef843 SB |
5513 | } |
5514 | ||
748a9306 | 5515 | CV * |
864dbfa3 | 5516 | Perl_newSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *block) |
79072805 | 5517 | { |
5f66b61c | 5518 | return Perl_newATTRSUB(aTHX_ floor, o, proto, NULL, block); |
09bef843 SB |
5519 | } |
5520 | ||
5521 | CV * | |
5522 | Perl_newATTRSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, OP *block) | |
5523 | { | |
27da23d5 | 5524 | dVAR; |
83ee9e09 | 5525 | GV *gv; |
5c144d81 | 5526 | const char *ps; |
ea6e9374 | 5527 | STRLEN ps_len; |
c445ea15 | 5528 | register CV *cv = NULL; |
beab0874 | 5529 | SV *const_sv; |
b48b272a NC |
5530 | /* If the subroutine has no body, no attributes, and no builtin attributes |
5531 | then it's just a sub declaration, and we may be able to get away with | |
5532 | storing with a placeholder scalar in the symbol table, rather than a | |
5533 | full GV and CV. If anything is present then it will take a full CV to | |
5534 | store it. */ | |
5535 | const I32 gv_fetch_flags | |
eb8433b7 NC |
5536 | = (block || attrs || (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS) |
5537 | || PL_madskills) | |
b48b272a | 5538 | ? GV_ADDMULTI : GV_ADDMULTI | GV_NOINIT; |
4ea561bc | 5539 | const char * const name = o ? SvPV_nolen_const(cSVOPo->op_sv) : NULL; |
ed4a8a9b | 5540 | bool has_name; |
8e742a20 MHM |
5541 | |
5542 | if (proto) { | |
5543 | assert(proto->op_type == OP_CONST); | |
4ea561bc | 5544 | ps = SvPV_const(((SVOP*)proto)->op_sv, ps_len); |
8e742a20 MHM |
5545 | } |
5546 | else | |
bd61b366 | 5547 | ps = NULL; |
8e742a20 | 5548 | |
ed4a8a9b NC |
5549 | if (name) { |
5550 | gv = gv_fetchsv(cSVOPo->op_sv, gv_fetch_flags, SVt_PVCV); | |
5551 | has_name = TRUE; | |
5552 | } else if (PERLDB_NAMEANON && CopLINE(PL_curcop)) { | |
aec46f14 | 5553 | SV * const sv = sv_newmortal(); |
c99da370 JH |
5554 | Perl_sv_setpvf(aTHX_ sv, "%s[%s:%"IVdf"]", |
5555 | PL_curstash ? "__ANON__" : "__ANON__::__ANON__", | |
83ee9e09 | 5556 | CopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); |
ed4a8a9b NC |
5557 | gv = gv_fetchsv(sv, gv_fetch_flags, SVt_PVCV); |
5558 | has_name = TRUE; | |
c1754fce NC |
5559 | } else if (PL_curstash) { |
5560 | gv = gv_fetchpvs("__ANON__", gv_fetch_flags, SVt_PVCV); | |
ed4a8a9b | 5561 | has_name = FALSE; |
c1754fce NC |
5562 | } else { |
5563 | gv = gv_fetchpvs("__ANON__::__ANON__", gv_fetch_flags, SVt_PVCV); | |
ed4a8a9b | 5564 | has_name = FALSE; |
c1754fce | 5565 | } |
83ee9e09 | 5566 | |
eb8433b7 NC |
5567 | if (!PL_madskills) { |
5568 | if (o) | |
5569 | SAVEFREEOP(o); | |
5570 | if (proto) | |
5571 | SAVEFREEOP(proto); | |
5572 | if (attrs) | |
5573 | SAVEFREEOP(attrs); | |
5574 | } | |
3fe9a6f1 | 5575 | |
09bef843 | 5576 | if (SvTYPE(gv) != SVt_PVGV) { /* Maybe prototype now, and had at |
55d729e4 GS |
5577 | maximum a prototype before. */ |
5578 | if (SvTYPE(gv) > SVt_NULL) { | |
ad64d0ec NC |
5579 | if (!SvPOK((const SV *)gv) |
5580 | && !(SvIOK((const SV *)gv) && SvIVX((const SV *)gv) == -1) | |
e476b1b5 | 5581 | && ckWARN_d(WARN_PROTOTYPE)) |
f248d071 | 5582 | { |
9014280d | 5583 | Perl_warner(aTHX_ packWARN(WARN_PROTOTYPE), "Runaway prototype"); |
f248d071 | 5584 | } |
ea726b52 | 5585 | cv_ckproto_len((const CV *)gv, NULL, ps, ps_len); |
55d729e4 GS |
5586 | } |
5587 | if (ps) | |
ad64d0ec | 5588 | sv_setpvn(MUTABLE_SV(gv), ps, ps_len); |
55d729e4 | 5589 | else |
ad64d0ec | 5590 | sv_setiv(MUTABLE_SV(gv), -1); |
e1a479c5 | 5591 | |
3280af22 NIS |
5592 | SvREFCNT_dec(PL_compcv); |
5593 | cv = PL_compcv = NULL; | |
beab0874 | 5594 | goto done; |
55d729e4 GS |
5595 | } |
5596 | ||
601f1833 | 5597 | cv = (!name || GvCVGEN(gv)) ? NULL : GvCV(gv); |
beab0874 | 5598 | |
eb8433b7 NC |
5599 | if (!block || !ps || *ps || attrs |
5600 | || (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS) | |
5601 | #ifdef PERL_MAD | |
5602 | || block->op_type == OP_NULL | |
5603 | #endif | |
5604 | ) | |
a0714e2c | 5605 | const_sv = NULL; |
beab0874 | 5606 | else |
601f1833 | 5607 | const_sv = op_const_sv(block, NULL); |
beab0874 JT |
5608 | |
5609 | if (cv) { | |
6867be6d | 5610 | const bool exists = CvROOT(cv) || CvXSUB(cv); |
5bd07a3d | 5611 | |
60ed1d8c GS |
5612 | /* if the subroutine doesn't exist and wasn't pre-declared |
5613 | * with a prototype, assume it will be AUTOLOADed, | |
5614 | * skipping the prototype check | |
5615 | */ | |
5616 | if (exists || SvPOK(cv)) | |
cbf82dd0 | 5617 | cv_ckproto_len(cv, gv, ps, ps_len); |
68dc0745 | 5618 | /* already defined (or promised)? */ |
60ed1d8c | 5619 | if (exists || GvASSUMECV(gv)) { |
eb8433b7 NC |
5620 | if ((!block |
5621 | #ifdef PERL_MAD | |
5622 | || block->op_type == OP_NULL | |
5623 | #endif | |
5624 | )&& !attrs) { | |
d3cea301 SB |
5625 | if (CvFLAGS(PL_compcv)) { |
5626 | /* might have had built-in attrs applied */ | |
5627 | CvFLAGS(cv) |= (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS); | |
5628 | } | |
aa689395 | 5629 | /* just a "sub foo;" when &foo is already defined */ |
3280af22 | 5630 | SAVEFREESV(PL_compcv); |
aa689395 | 5631 | goto done; |
5632 | } | |
eb8433b7 NC |
5633 | if (block |
5634 | #ifdef PERL_MAD | |
5635 | && block->op_type != OP_NULL | |
5636 | #endif | |
5637 | ) { | |
beab0874 JT |
5638 | if (ckWARN(WARN_REDEFINE) |
5639 | || (CvCONST(cv) | |
5640 | && (!const_sv || sv_cmp(cv_const_sv(cv), const_sv)))) | |
5641 | { | |
6867be6d | 5642 | const line_t oldline = CopLINE(PL_curcop); |
53a7735b DM |
5643 | if (PL_parser && PL_parser->copline != NOLINE) |
5644 | CopLINE_set(PL_curcop, PL_parser->copline); | |
9014280d | 5645 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), |
666ea192 JH |
5646 | CvCONST(cv) ? "Constant subroutine %s redefined" |
5647 | : "Subroutine %s redefined", name); | |
beab0874 JT |
5648 | CopLINE_set(PL_curcop, oldline); |
5649 | } | |
eb8433b7 NC |
5650 | #ifdef PERL_MAD |
5651 | if (!PL_minus_c) /* keep old one around for madskills */ | |
5652 | #endif | |
5653 | { | |
5654 | /* (PL_madskills unset in used file.) */ | |
5655 | SvREFCNT_dec(cv); | |
5656 | } | |
601f1833 | 5657 | cv = NULL; |
79072805 | 5658 | } |
79072805 LW |
5659 | } |
5660 | } | |
beab0874 | 5661 | if (const_sv) { |
f84c484e | 5662 | SvREFCNT_inc_simple_void_NN(const_sv); |
beab0874 | 5663 | if (cv) { |
0768512c | 5664 | assert(!CvROOT(cv) && !CvCONST(cv)); |
ad64d0ec | 5665 | sv_setpvs(MUTABLE_SV(cv), ""); /* prototype is "" */ |
beab0874 JT |
5666 | CvXSUBANY(cv).any_ptr = const_sv; |
5667 | CvXSUB(cv) = const_sv_xsub; | |
5668 | CvCONST_on(cv); | |
d04ba589 | 5669 | CvISXSUB_on(cv); |
beab0874 JT |
5670 | } |
5671 | else { | |
601f1833 | 5672 | GvCV(gv) = NULL; |
beab0874 JT |
5673 | cv = newCONSTSUB(NULL, name, const_sv); |
5674 | } | |
e1a479c5 BB |
5675 | mro_method_changed_in( /* sub Foo::Bar () { 123 } */ |
5676 | (CvGV(cv) && GvSTASH(CvGV(cv))) | |
5677 | ? GvSTASH(CvGV(cv)) | |
5678 | : CvSTASH(cv) | |
5679 | ? CvSTASH(cv) | |
5680 | : PL_curstash | |
5681 | ); | |
eb8433b7 NC |
5682 | if (PL_madskills) |
5683 | goto install_block; | |
beab0874 JT |
5684 | op_free(block); |
5685 | SvREFCNT_dec(PL_compcv); | |
5686 | PL_compcv = NULL; | |
beab0874 JT |
5687 | goto done; |
5688 | } | |
09330df8 Z |
5689 | if (cv) { /* must reuse cv if autoloaded */ |
5690 | /* transfer PL_compcv to cv */ | |
5691 | if (block | |
eb8433b7 | 5692 | #ifdef PERL_MAD |
09330df8 | 5693 | && block->op_type != OP_NULL |
eb8433b7 | 5694 | #endif |
09330df8 Z |
5695 | ) { |
5696 | cv_undef(cv); | |
5697 | CvFLAGS(cv) = CvFLAGS(PL_compcv); | |
5698 | if (!CvWEAKOUTSIDE(cv)) | |
5699 | SvREFCNT_dec(CvOUTSIDE(cv)); | |
5700 | CvOUTSIDE(cv) = CvOUTSIDE(PL_compcv); | |
5701 | CvOUTSIDE_SEQ(cv) = CvOUTSIDE_SEQ(PL_compcv); | |
5702 | CvOUTSIDE(PL_compcv) = 0; | |
5703 | CvPADLIST(cv) = CvPADLIST(PL_compcv); | |
5704 | CvPADLIST(PL_compcv) = 0; | |
5705 | /* inner references to PL_compcv must be fixed up ... */ | |
5706 | pad_fixup_inner_anons(CvPADLIST(cv), PL_compcv, cv); | |
5707 | if (PERLDB_INTER)/* Advice debugger on the new sub. */ | |
5708 | ++PL_sub_generation; | |
09bef843 SB |
5709 | } |
5710 | else { | |
09330df8 Z |
5711 | /* Might have had built-in attributes applied -- propagate them. */ |
5712 | CvFLAGS(cv) |= (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS); | |
09bef843 | 5713 | } |
282f25c9 | 5714 | /* ... before we throw it away */ |
3280af22 | 5715 | SvREFCNT_dec(PL_compcv); |
b5c19bd7 | 5716 | PL_compcv = cv; |
a0d0e21e LW |
5717 | } |
5718 | else { | |
3280af22 | 5719 | cv = PL_compcv; |
44a8e56a | 5720 | if (name) { |
5721 | GvCV(gv) = cv; | |
eb8433b7 NC |
5722 | if (PL_madskills) { |
5723 | if (strEQ(name, "import")) { | |
ad64d0ec | 5724 | PL_formfeed = MUTABLE_SV(cv); |
eb8433b7 NC |
5725 | Perl_warner(aTHX_ packWARN(WARN_VOID), "%lx\n", (long)cv); |
5726 | } | |
5727 | } | |
44a8e56a | 5728 | GvCVGEN(gv) = 0; |
e1a479c5 | 5729 | mro_method_changed_in(GvSTASH(gv)); /* sub Foo::bar { (shift)+1 } */ |
44a8e56a | 5730 | } |
a0d0e21e | 5731 | } |
09330df8 Z |
5732 | if (!CvGV(cv)) { |
5733 | CvGV(cv) = gv; | |
5734 | CvFILE_set_from_cop(cv, PL_curcop); | |
5735 | CvSTASH(cv) = PL_curstash; | |
5736 | } | |
5737 | if (attrs) { | |
5738 | /* Need to do a C<use attributes $stash_of_cv,\&cv,@attrs>. */ | |
5739 | HV *stash = name && GvSTASH(CvGV(cv)) ? GvSTASH(CvGV(cv)) : PL_curstash; | |
5740 | apply_attrs(stash, MUTABLE_SV(cv), attrs, FALSE); | |
5741 | } | |
8990e307 | 5742 | |
3fe9a6f1 | 5743 | if (ps) |
ad64d0ec | 5744 | sv_setpvn(MUTABLE_SV(cv), ps, ps_len); |
4633a7c4 | 5745 | |
13765c85 | 5746 | if (PL_parser && PL_parser->error_count) { |
c07a80fd | 5747 | op_free(block); |
5f66b61c | 5748 | block = NULL; |
68dc0745 | 5749 | if (name) { |
6867be6d | 5750 | const char *s = strrchr(name, ':'); |
68dc0745 | 5751 | s = s ? s+1 : name; |
6d4c2119 | 5752 | if (strEQ(s, "BEGIN")) { |
e1ec3a88 | 5753 | const char not_safe[] = |
6d4c2119 | 5754 | "BEGIN not safe after errors--compilation aborted"; |
faef0170 | 5755 | if (PL_in_eval & EVAL_KEEPERR) |
cea2e8a9 | 5756 | Perl_croak(aTHX_ not_safe); |
6d4c2119 CS |
5757 | else { |
5758 | /* force display of errors found but not reported */ | |
38a03e6e | 5759 | sv_catpv(ERRSV, not_safe); |
be2597df | 5760 | Perl_croak(aTHX_ "%"SVf, SVfARG(ERRSV)); |
6d4c2119 CS |
5761 | } |
5762 | } | |
68dc0745 | 5763 | } |
c07a80fd | 5764 | } |
eb8433b7 | 5765 | install_block: |
beab0874 JT |
5766 | if (!block) |
5767 | goto done; | |
a0d0e21e | 5768 | |
aac018bb NC |
5769 | /* If we assign an optree to a PVCV, then we've defined a subroutine that |
5770 | the debugger could be able to set a breakpoint in, so signal to | |
5771 | pp_entereval that it should not throw away any saved lines at scope | |
5772 | exit. */ | |
5773 | ||
fd06b02c | 5774 | PL_breakable_sub_gen++; |
7766f137 | 5775 | if (CvLVALUE(cv)) { |
78f9721b SM |
5776 | CvROOT(cv) = newUNOP(OP_LEAVESUBLV, 0, |
5777 | mod(scalarseq(block), OP_LEAVESUBLV)); | |
7e5d8ed2 | 5778 | block->op_attached = 1; |
7766f137 GS |
5779 | } |
5780 | else { | |
09c2fd24 AE |
5781 | /* This makes sub {}; work as expected. */ |
5782 | if (block->op_type == OP_STUB) { | |
1496a290 | 5783 | OP* const newblock = newSTATEOP(0, NULL, 0); |
eb8433b7 NC |
5784 | #ifdef PERL_MAD |
5785 | op_getmad(block,newblock,'B'); | |
5786 | #else | |
09c2fd24 | 5787 | op_free(block); |
eb8433b7 NC |
5788 | #endif |
5789 | block = newblock; | |
09c2fd24 | 5790 | } |
7e5d8ed2 DM |
5791 | else |
5792 | block->op_attached = 1; | |
7766f137 GS |
5793 | CvROOT(cv) = newUNOP(OP_LEAVESUB, 0, scalarseq(block)); |
5794 | } | |
5795 | CvROOT(cv)->op_private |= OPpREFCOUNTED; | |
5796 | OpREFCNT_set(CvROOT(cv), 1); | |
5797 | CvSTART(cv) = LINKLIST(CvROOT(cv)); | |
5798 | CvROOT(cv)->op_next = 0; | |
a2efc822 | 5799 | CALL_PEEP(CvSTART(cv)); |
7766f137 GS |
5800 | |
5801 | /* now that optimizer has done its work, adjust pad values */ | |
54310121 | 5802 | |
dd2155a4 DM |
5803 | pad_tidy(CvCLONE(cv) ? padtidy_SUBCLONE : padtidy_SUB); |
5804 | ||
5805 | if (CvCLONE(cv)) { | |
beab0874 JT |
5806 | assert(!CvCONST(cv)); |
5807 | if (ps && !*ps && op_const_sv(block, cv)) | |
5808 | CvCONST_on(cv); | |
a0d0e21e | 5809 | } |
79072805 | 5810 | |
ed4a8a9b | 5811 | if (has_name) { |
3280af22 | 5812 | if (PERLDB_SUBLINE && PL_curstash != PL_debstash) { |
561b68a9 | 5813 | SV * const sv = newSV(0); |
c4420975 | 5814 | SV * const tmpstr = sv_newmortal(); |
5c1737d1 NC |
5815 | GV * const db_postponed = gv_fetchpvs("DB::postponed", |
5816 | GV_ADDMULTI, SVt_PVHV); | |
44a8e56a | 5817 | HV *hv; |
5818 | ||
ed094faf GS |
5819 | Perl_sv_setpvf(aTHX_ sv, "%s:%ld-%ld", |
5820 | CopFILE(PL_curcop), | |
cc49e20b | 5821 | (long)PL_subline, (long)CopLINE(PL_curcop)); |
bd61b366 | 5822 | gv_efullname3(tmpstr, gv, NULL); |
04fe65b0 RGS |
5823 | (void)hv_store(GvHV(PL_DBsub), SvPVX_const(tmpstr), |
5824 | SvCUR(tmpstr), sv, 0); | |
44a8e56a | 5825 | hv = GvHVn(db_postponed); |
551405c4 AL |
5826 | if (HvFILL(hv) > 0 && hv_exists(hv, SvPVX_const(tmpstr), SvCUR(tmpstr))) { |
5827 | CV * const pcv = GvCV(db_postponed); | |
5828 | if (pcv) { | |
5829 | dSP; | |
5830 | PUSHMARK(SP); | |
5831 | XPUSHs(tmpstr); | |
5832 | PUTBACK; | |
ad64d0ec | 5833 | call_sv(MUTABLE_SV(pcv), G_DISCARD); |
551405c4 | 5834 | } |
44a8e56a | 5835 | } |
5836 | } | |
79072805 | 5837 | |
13765c85 | 5838 | if (name && ! (PL_parser && PL_parser->error_count)) |
0cd10f52 | 5839 | process_special_blocks(name, gv, cv); |
33fb7a6e | 5840 | } |
ed094faf | 5841 | |
33fb7a6e | 5842 | done: |
53a7735b DM |
5843 | if (PL_parser) |
5844 | PL_parser->copline = NOLINE; | |
33fb7a6e NC |
5845 | LEAVE_SCOPE(floor); |
5846 | return cv; | |
5847 | } | |
ed094faf | 5848 | |
33fb7a6e NC |
5849 | STATIC void |
5850 | S_process_special_blocks(pTHX_ const char *const fullname, GV *const gv, | |
5851 | CV *const cv) | |
5852 | { | |
5853 | const char *const colon = strrchr(fullname,':'); | |
5854 | const char *const name = colon ? colon + 1 : fullname; | |
5855 | ||
7918f24d NC |
5856 | PERL_ARGS_ASSERT_PROCESS_SPECIAL_BLOCKS; |
5857 | ||
33fb7a6e | 5858 | if (*name == 'B') { |
6952d67e | 5859 | if (strEQ(name, "BEGIN")) { |
6867be6d | 5860 | const I32 oldscope = PL_scopestack_ix; |
28757baa | 5861 | ENTER; |
57843af0 GS |
5862 | SAVECOPFILE(&PL_compiling); |
5863 | SAVECOPLINE(&PL_compiling); | |
28757baa | 5864 | |
a58fb6f9 | 5865 | DEBUG_x( dump_sub(gv) ); |
ad64d0ec | 5866 | Perl_av_create_and_push(aTHX_ &PL_beginav, MUTABLE_SV(cv)); |
ea2f84a3 | 5867 | GvCV(gv) = 0; /* cv has been hijacked */ |
3280af22 | 5868 | call_list(oldscope, PL_beginav); |
a6006777 | 5869 | |
3280af22 | 5870 | PL_curcop = &PL_compiling; |
623e6609 | 5871 | CopHINTS_set(&PL_compiling, PL_hints); |
28757baa | 5872 | LEAVE; |
5873 | } | |
33fb7a6e NC |
5874 | else |
5875 | return; | |
5876 | } else { | |
5877 | if (*name == 'E') { | |
5878 | if strEQ(name, "END") { | |
a58fb6f9 | 5879 | DEBUG_x( dump_sub(gv) ); |
ad64d0ec | 5880 | Perl_av_create_and_unshift_one(aTHX_ &PL_endav, MUTABLE_SV(cv)); |
33fb7a6e NC |
5881 | } else |
5882 | return; | |
5883 | } else if (*name == 'U') { | |
5884 | if (strEQ(name, "UNITCHECK")) { | |
5885 | /* It's never too late to run a unitcheck block */ | |
ad64d0ec | 5886 | Perl_av_create_and_unshift_one(aTHX_ &PL_unitcheckav, MUTABLE_SV(cv)); |
33fb7a6e NC |
5887 | } |
5888 | else | |
5889 | return; | |
5890 | } else if (*name == 'C') { | |
5891 | if (strEQ(name, "CHECK")) { | |
5892 | if (PL_main_start && ckWARN(WARN_VOID)) | |
5893 | Perl_warner(aTHX_ packWARN(WARN_VOID), | |
5894 | "Too late to run CHECK block"); | |
ad64d0ec | 5895 | Perl_av_create_and_unshift_one(aTHX_ &PL_checkav, MUTABLE_SV(cv)); |
33fb7a6e NC |
5896 | } |
5897 | else | |
5898 | return; | |
5899 | } else if (*name == 'I') { | |
5900 | if (strEQ(name, "INIT")) { | |
5901 | if (PL_main_start && ckWARN(WARN_VOID)) | |
5902 | Perl_warner(aTHX_ packWARN(WARN_VOID), | |
5903 | "Too late to run INIT block"); | |
ad64d0ec | 5904 | Perl_av_create_and_push(aTHX_ &PL_initav, MUTABLE_SV(cv)); |
33fb7a6e NC |
5905 | } |
5906 | else | |
5907 | return; | |
5908 | } else | |
5909 | return; | |
a58fb6f9 | 5910 | DEBUG_x( dump_sub(gv) ); |
33fb7a6e | 5911 | GvCV(gv) = 0; /* cv has been hijacked */ |
79072805 | 5912 | } |
79072805 LW |
5913 | } |
5914 | ||
954c1994 GS |
5915 | /* |
5916 | =for apidoc newCONSTSUB | |
5917 | ||
5918 | Creates a constant sub equivalent to Perl C<sub FOO () { 123 }> which is | |
5919 | eligible for inlining at compile-time. | |
5920 | ||
99ab892b NC |
5921 | Passing NULL for SV creates a constant sub equivalent to C<sub BAR () {}>, |
5922 | which won't be called if used as a destructor, but will suppress the overhead | |
5923 | of a call to C<AUTOLOAD>. (This form, however, isn't eligible for inlining at | |
5924 | compile time.) | |
5925 | ||
954c1994 GS |
5926 | =cut |
5927 | */ | |
5928 | ||
beab0874 | 5929 | CV * |
e1ec3a88 | 5930 | Perl_newCONSTSUB(pTHX_ HV *stash, const char *name, SV *sv) |
5476c433 | 5931 | { |
27da23d5 | 5932 | dVAR; |
beab0874 | 5933 | CV* cv; |
cbf82dd0 | 5934 | #ifdef USE_ITHREADS |
54d012c6 | 5935 | const char *const file = CopFILE(PL_curcop); |
cbf82dd0 NC |
5936 | #else |
5937 | SV *const temp_sv = CopFILESV(PL_curcop); | |
def18e4c | 5938 | const char *const file = temp_sv ? SvPV_nolen_const(temp_sv) : NULL; |
cbf82dd0 | 5939 | #endif |
5476c433 | 5940 | |
11faa288 | 5941 | ENTER; |
11faa288 | 5942 | |
401667e9 DM |
5943 | if (IN_PERL_RUNTIME) { |
5944 | /* at runtime, it's not safe to manipulate PL_curcop: it may be | |
5945 | * an op shared between threads. Use a non-shared COP for our | |
5946 | * dirty work */ | |
5947 | SAVEVPTR(PL_curcop); | |
5948 | PL_curcop = &PL_compiling; | |
5949 | } | |
f4dd75d9 | 5950 | SAVECOPLINE(PL_curcop); |
53a7735b | 5951 | CopLINE_set(PL_curcop, PL_parser ? PL_parser->copline : NOLINE); |
f4dd75d9 GS |
5952 | |
5953 | SAVEHINTS(); | |
3280af22 | 5954 | PL_hints &= ~HINT_BLOCK_SCOPE; |
11faa288 GS |
5955 | |
5956 | if (stash) { | |
5957 | SAVESPTR(PL_curstash); | |
5958 | SAVECOPSTASH(PL_curcop); | |
5959 | PL_curstash = stash; | |
05ec9bb3 | 5960 | CopSTASH_set(PL_curcop,stash); |
11faa288 | 5961 | } |
5476c433 | 5962 | |
cbf82dd0 NC |
5963 | /* file becomes the CvFILE. For an XS, it's supposed to be static storage, |
5964 | and so doesn't get free()d. (It's expected to be from the C pre- | |
5965 | processor __FILE__ directive). But we need a dynamically allocated one, | |
77004dee | 5966 | and we need it to get freed. */ |
54d012c6 NC |
5967 | cv = newXS_flags(name, const_sv_xsub, file ? file : "", "", |
5968 | XS_DYNAMIC_FILENAME); | |
beab0874 JT |
5969 | CvXSUBANY(cv).any_ptr = sv; |
5970 | CvCONST_on(cv); | |
5476c433 | 5971 | |
65e66c80 | 5972 | #ifdef USE_ITHREADS |
02f28d44 MHM |
5973 | if (stash) |
5974 | CopSTASH_free(PL_curcop); | |
65e66c80 | 5975 | #endif |
11faa288 | 5976 | LEAVE; |
beab0874 JT |
5977 | |
5978 | return cv; | |
5476c433 JD |
5979 | } |
5980 | ||
77004dee NC |
5981 | CV * |
5982 | Perl_newXS_flags(pTHX_ const char *name, XSUBADDR_t subaddr, | |
5983 | const char *const filename, const char *const proto, | |
5984 | U32 flags) | |
5985 | { | |
5986 | CV *cv = newXS(name, subaddr, filename); | |
5987 | ||
7918f24d NC |
5988 | PERL_ARGS_ASSERT_NEWXS_FLAGS; |
5989 | ||
77004dee NC |
5990 | if (flags & XS_DYNAMIC_FILENAME) { |
5991 | /* We need to "make arrangements" (ie cheat) to ensure that the | |
5992 | filename lasts as long as the PVCV we just created, but also doesn't | |
5993 | leak */ | |
5994 | STRLEN filename_len = strlen(filename); | |
5995 | STRLEN proto_and_file_len = filename_len; | |
5996 | char *proto_and_file; | |
5997 | STRLEN proto_len; | |
5998 | ||
5999 | if (proto) { | |
6000 | proto_len = strlen(proto); | |
6001 | proto_and_file_len += proto_len; | |
6002 | ||
6003 | Newx(proto_and_file, proto_and_file_len + 1, char); | |
6004 | Copy(proto, proto_and_file, proto_len, char); | |
6005 | Copy(filename, proto_and_file + proto_len, filename_len + 1, char); | |
6006 | } else { | |
6007 | proto_len = 0; | |
6008 | proto_and_file = savepvn(filename, filename_len); | |
6009 | } | |
6010 | ||
6011 | /* This gets free()d. :-) */ | |
ad64d0ec | 6012 | sv_usepvn_flags(MUTABLE_SV(cv), proto_and_file, proto_and_file_len, |
77004dee NC |
6013 | SV_HAS_TRAILING_NUL); |
6014 | if (proto) { | |
6015 | /* This gives us the correct prototype, rather than one with the | |
6016 | file name appended. */ | |
6017 | SvCUR_set(cv, proto_len); | |
6018 | } else { | |
6019 | SvPOK_off(cv); | |
6020 | } | |
81a2b3b6 | 6021 | CvFILE(cv) = proto_and_file + proto_len; |
77004dee | 6022 | } else { |
ad64d0ec | 6023 | sv_setpv(MUTABLE_SV(cv), proto); |
77004dee NC |
6024 | } |
6025 | return cv; | |
6026 | } | |
6027 | ||
954c1994 GS |
6028 | /* |
6029 | =for apidoc U||newXS | |
6030 | ||
77004dee NC |
6031 | Used by C<xsubpp> to hook up XSUBs as Perl subs. I<filename> needs to be |
6032 | static storage, as it is used directly as CvFILE(), without a copy being made. | |
954c1994 GS |
6033 | |
6034 | =cut | |
6035 | */ | |
6036 | ||
57d3b86d | 6037 | CV * |
bfed75c6 | 6038 | Perl_newXS(pTHX_ const char *name, XSUBADDR_t subaddr, const char *filename) |
a0d0e21e | 6039 | { |
97aff369 | 6040 | dVAR; |
666ea192 JH |
6041 | GV * const gv = gv_fetchpv(name ? name : |
6042 | (PL_curstash ? "__ANON__" : "__ANON__::__ANON__"), | |
6043 | GV_ADDMULTI, SVt_PVCV); | |
79072805 | 6044 | register CV *cv; |
44a8e56a | 6045 | |
7918f24d NC |
6046 | PERL_ARGS_ASSERT_NEWXS; |
6047 | ||
1ecdd9a8 HS |
6048 | if (!subaddr) |
6049 | Perl_croak(aTHX_ "panic: no address for '%s' in '%s'", name, filename); | |
6050 | ||
601f1833 | 6051 | if ((cv = (name ? GvCV(gv) : NULL))) { |
44a8e56a | 6052 | if (GvCVGEN(gv)) { |
6053 | /* just a cached method */ | |
6054 | SvREFCNT_dec(cv); | |
601f1833 | 6055 | cv = NULL; |
44a8e56a | 6056 | } |
6057 | else if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
6058 | /* already defined (or promised) */ | |
1df70142 | 6059 | /* XXX It's possible for this HvNAME_get to return null, and get passed into strEQ */ |
66a1b24b AL |
6060 | if (ckWARN(WARN_REDEFINE)) { |
6061 | GV * const gvcv = CvGV(cv); | |
6062 | if (gvcv) { | |
6063 | HV * const stash = GvSTASH(gvcv); | |
6064 | if (stash) { | |
8b38226b AL |
6065 | const char *redefined_name = HvNAME_get(stash); |
6066 | if ( strEQ(redefined_name,"autouse") ) { | |
66a1b24b | 6067 | const line_t oldline = CopLINE(PL_curcop); |
53a7735b DM |
6068 | if (PL_parser && PL_parser->copline != NOLINE) |
6069 | CopLINE_set(PL_curcop, PL_parser->copline); | |
66a1b24b | 6070 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), |
666ea192 JH |
6071 | CvCONST(cv) ? "Constant subroutine %s redefined" |
6072 | : "Subroutine %s redefined" | |
6073 | ,name); | |
66a1b24b AL |
6074 | CopLINE_set(PL_curcop, oldline); |
6075 | } | |
6076 | } | |
6077 | } | |
a0d0e21e LW |
6078 | } |
6079 | SvREFCNT_dec(cv); | |
601f1833 | 6080 | cv = NULL; |
79072805 | 6081 | } |
79072805 | 6082 | } |
44a8e56a | 6083 | |
6084 | if (cv) /* must reuse cv if autoloaded */ | |
6085 | cv_undef(cv); | |
a0d0e21e | 6086 | else { |
ea726b52 | 6087 | cv = MUTABLE_CV(newSV_type(SVt_PVCV)); |
44a8e56a | 6088 | if (name) { |
6089 | GvCV(gv) = cv; | |
6090 | GvCVGEN(gv) = 0; | |
e1a479c5 | 6091 | mro_method_changed_in(GvSTASH(gv)); /* newXS */ |
44a8e56a | 6092 | } |
a0d0e21e | 6093 | } |
65c50114 | 6094 | CvGV(cv) = gv; |
b195d487 | 6095 | (void)gv_fetchfile(filename); |
dd374669 | 6096 | CvFILE(cv) = (char *)filename; /* NOTE: not copied, as it is expected to be |
57843af0 | 6097 | an external constant string */ |
d04ba589 | 6098 | CvISXSUB_on(cv); |
a0d0e21e | 6099 | CvXSUB(cv) = subaddr; |
44a8e56a | 6100 | |
33fb7a6e NC |
6101 | if (name) |
6102 | process_special_blocks(name, gv, cv); | |
8990e307 | 6103 | else |
a5f75d66 | 6104 | CvANON_on(cv); |
44a8e56a | 6105 | |
a0d0e21e | 6106 | return cv; |
79072805 LW |
6107 | } |
6108 | ||
eb8433b7 NC |
6109 | #ifdef PERL_MAD |
6110 | OP * | |
6111 | #else | |
79072805 | 6112 | void |
eb8433b7 | 6113 | #endif |
864dbfa3 | 6114 | Perl_newFORM(pTHX_ I32 floor, OP *o, OP *block) |
79072805 | 6115 | { |
97aff369 | 6116 | dVAR; |
79072805 | 6117 | register CV *cv; |
eb8433b7 NC |
6118 | #ifdef PERL_MAD |
6119 | OP* pegop = newOP(OP_NULL, 0); | |
6120 | #endif | |
79072805 | 6121 | |
0bd48802 | 6122 | GV * const gv = o |
f776e3cd | 6123 | ? gv_fetchsv(cSVOPo->op_sv, GV_ADD, SVt_PVFM) |
fafc274c | 6124 | : gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVFM); |
0bd48802 | 6125 | |
a5f75d66 | 6126 | GvMULTI_on(gv); |
155aba94 | 6127 | if ((cv = GvFORM(gv))) { |
599cee73 | 6128 | if (ckWARN(WARN_REDEFINE)) { |
6867be6d | 6129 | const line_t oldline = CopLINE(PL_curcop); |
53a7735b DM |
6130 | if (PL_parser && PL_parser->copline != NOLINE) |
6131 | CopLINE_set(PL_curcop, PL_parser->copline); | |
ee6d2783 NC |
6132 | if (o) { |
6133 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), | |
6134 | "Format %"SVf" redefined", SVfARG(cSVOPo->op_sv)); | |
6135 | } else { | |
6136 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), | |
6137 | "Format STDOUT redefined"); | |
6138 | } | |
57843af0 | 6139 | CopLINE_set(PL_curcop, oldline); |
79072805 | 6140 | } |
8990e307 | 6141 | SvREFCNT_dec(cv); |
79072805 | 6142 | } |
3280af22 | 6143 | cv = PL_compcv; |
79072805 | 6144 | GvFORM(gv) = cv; |
65c50114 | 6145 | CvGV(cv) = gv; |
a636914a | 6146 | CvFILE_set_from_cop(cv, PL_curcop); |
79072805 | 6147 | |
a0d0e21e | 6148 | |
dd2155a4 | 6149 | pad_tidy(padtidy_FORMAT); |
79072805 | 6150 | CvROOT(cv) = newUNOP(OP_LEAVEWRITE, 0, scalarseq(block)); |
7934575e GS |
6151 | CvROOT(cv)->op_private |= OPpREFCOUNTED; |
6152 | OpREFCNT_set(CvROOT(cv), 1); | |
79072805 LW |
6153 | CvSTART(cv) = LINKLIST(CvROOT(cv)); |
6154 | CvROOT(cv)->op_next = 0; | |
a2efc822 | 6155 | CALL_PEEP(CvSTART(cv)); |
eb8433b7 NC |
6156 | #ifdef PERL_MAD |
6157 | op_getmad(o,pegop,'n'); | |
6158 | op_getmad_weak(block, pegop, 'b'); | |
6159 | #else | |
11343788 | 6160 | op_free(o); |
eb8433b7 | 6161 | #endif |
53a7735b DM |
6162 | if (PL_parser) |
6163 | PL_parser->copline = NOLINE; | |
8990e307 | 6164 | LEAVE_SCOPE(floor); |
eb8433b7 NC |
6165 | #ifdef PERL_MAD |
6166 | return pegop; | |
6167 | #endif | |
79072805 LW |
6168 | } |
6169 | ||
6170 | OP * | |
864dbfa3 | 6171 | Perl_newANONLIST(pTHX_ OP *o) |
79072805 | 6172 | { |
78c72037 | 6173 | return convert(OP_ANONLIST, OPf_SPECIAL, o); |
79072805 LW |
6174 | } |
6175 | ||
6176 | OP * | |
864dbfa3 | 6177 | Perl_newANONHASH(pTHX_ OP *o) |
79072805 | 6178 | { |
78c72037 | 6179 | return convert(OP_ANONHASH, OPf_SPECIAL, o); |
a0d0e21e LW |
6180 | } |
6181 | ||
6182 | OP * | |
864dbfa3 | 6183 | Perl_newANONSUB(pTHX_ I32 floor, OP *proto, OP *block) |
a0d0e21e | 6184 | { |
5f66b61c | 6185 | return newANONATTRSUB(floor, proto, NULL, block); |
09bef843 SB |
6186 | } |
6187 | ||
6188 | OP * | |
6189 | Perl_newANONATTRSUB(pTHX_ I32 floor, OP *proto, OP *attrs, OP *block) | |
6190 | { | |
a0d0e21e | 6191 | return newUNOP(OP_REFGEN, 0, |
09bef843 | 6192 | newSVOP(OP_ANONCODE, 0, |
ad64d0ec | 6193 | MUTABLE_SV(newATTRSUB(floor, 0, proto, attrs, block)))); |
79072805 LW |
6194 | } |
6195 | ||
6196 | OP * | |
864dbfa3 | 6197 | Perl_oopsAV(pTHX_ OP *o) |
79072805 | 6198 | { |
27da23d5 | 6199 | dVAR; |
7918f24d NC |
6200 | |
6201 | PERL_ARGS_ASSERT_OOPSAV; | |
6202 | ||
ed6116ce LW |
6203 | switch (o->op_type) { |
6204 | case OP_PADSV: | |
6205 | o->op_type = OP_PADAV; | |
22c35a8c | 6206 | o->op_ppaddr = PL_ppaddr[OP_PADAV]; |
51e247a3 | 6207 | return ref(o, OP_RV2AV); |
b2ffa427 | 6208 | |
ed6116ce | 6209 | case OP_RV2SV: |
79072805 | 6210 | o->op_type = OP_RV2AV; |
22c35a8c | 6211 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
79072805 | 6212 | ref(o, OP_RV2AV); |
ed6116ce LW |
6213 | break; |
6214 | ||
6215 | default: | |
0453d815 | 6216 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 6217 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "oops: oopsAV"); |
ed6116ce LW |
6218 | break; |
6219 | } | |
79072805 LW |
6220 | return o; |
6221 | } | |
6222 | ||
6223 | OP * | |
864dbfa3 | 6224 | Perl_oopsHV(pTHX_ OP *o) |
79072805 | 6225 | { |
27da23d5 | 6226 | dVAR; |
7918f24d NC |
6227 | |
6228 | PERL_ARGS_ASSERT_OOPSHV; | |
6229 | ||
ed6116ce LW |
6230 | switch (o->op_type) { |
6231 | case OP_PADSV: | |
6232 | case OP_PADAV: | |
6233 | o->op_type = OP_PADHV; | |
22c35a8c | 6234 | o->op_ppaddr = PL_ppaddr[OP_PADHV]; |
51e247a3 | 6235 | return ref(o, OP_RV2HV); |
ed6116ce LW |
6236 | |
6237 | case OP_RV2SV: | |
6238 | case OP_RV2AV: | |
79072805 | 6239 | o->op_type = OP_RV2HV; |
22c35a8c | 6240 | o->op_ppaddr = PL_ppaddr[OP_RV2HV]; |
79072805 | 6241 | ref(o, OP_RV2HV); |
ed6116ce LW |
6242 | break; |
6243 | ||
6244 | default: | |
0453d815 | 6245 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 6246 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "oops: oopsHV"); |
ed6116ce LW |
6247 | break; |
6248 | } | |
79072805 LW |
6249 | return o; |
6250 | } | |
6251 | ||
6252 | OP * | |
864dbfa3 | 6253 | Perl_newAVREF(pTHX_ OP *o) |
79072805 | 6254 | { |
27da23d5 | 6255 | dVAR; |
7918f24d NC |
6256 | |
6257 | PERL_ARGS_ASSERT_NEWAVREF; | |
6258 | ||
ed6116ce LW |
6259 | if (o->op_type == OP_PADANY) { |
6260 | o->op_type = OP_PADAV; | |
22c35a8c | 6261 | o->op_ppaddr = PL_ppaddr[OP_PADAV]; |
93a17b20 | 6262 | return o; |
ed6116ce | 6263 | } |
a1063b2d | 6264 | else if ((o->op_type == OP_RV2AV || o->op_type == OP_PADAV) |
9014280d PM |
6265 | && ckWARN(WARN_DEPRECATED)) { |
6266 | Perl_warner(aTHX_ packWARN(WARN_DEPRECATED), | |
a1063b2d RH |
6267 | "Using an array as a reference is deprecated"); |
6268 | } | |
79072805 LW |
6269 | return newUNOP(OP_RV2AV, 0, scalar(o)); |
6270 | } | |
6271 | ||
6272 | OP * | |
864dbfa3 | 6273 | Perl_newGVREF(pTHX_ I32 type, OP *o) |
79072805 | 6274 | { |
82092f1d | 6275 | if (type == OP_MAPSTART || type == OP_GREPSTART || type == OP_SORT) |
a0d0e21e | 6276 | return newUNOP(OP_NULL, 0, o); |
748a9306 | 6277 | return ref(newUNOP(OP_RV2GV, OPf_REF, o), type); |
79072805 LW |
6278 | } |
6279 | ||
6280 | OP * | |
864dbfa3 | 6281 | Perl_newHVREF(pTHX_ OP *o) |
79072805 | 6282 | { |
27da23d5 | 6283 | dVAR; |
7918f24d NC |
6284 | |
6285 | PERL_ARGS_ASSERT_NEWHVREF; | |
6286 | ||
ed6116ce LW |
6287 | if (o->op_type == OP_PADANY) { |
6288 | o->op_type = OP_PADHV; | |
22c35a8c | 6289 | o->op_ppaddr = PL_ppaddr[OP_PADHV]; |
93a17b20 | 6290 | return o; |
ed6116ce | 6291 | } |
a1063b2d | 6292 | else if ((o->op_type == OP_RV2HV || o->op_type == OP_PADHV) |
9014280d PM |
6293 | && ckWARN(WARN_DEPRECATED)) { |
6294 | Perl_warner(aTHX_ packWARN(WARN_DEPRECATED), | |
a1063b2d RH |
6295 | "Using a hash as a reference is deprecated"); |
6296 | } | |
79072805 LW |
6297 | return newUNOP(OP_RV2HV, 0, scalar(o)); |
6298 | } | |
6299 | ||
6300 | OP * | |
864dbfa3 | 6301 | Perl_newCVREF(pTHX_ I32 flags, OP *o) |
79072805 | 6302 | { |
c07a80fd | 6303 | return newUNOP(OP_RV2CV, flags, scalar(o)); |
79072805 LW |
6304 | } |
6305 | ||
6306 | OP * | |
864dbfa3 | 6307 | Perl_newSVREF(pTHX_ OP *o) |
79072805 | 6308 | { |
27da23d5 | 6309 | dVAR; |
7918f24d NC |
6310 | |
6311 | PERL_ARGS_ASSERT_NEWSVREF; | |
6312 | ||
ed6116ce LW |
6313 | if (o->op_type == OP_PADANY) { |
6314 | o->op_type = OP_PADSV; | |
22c35a8c | 6315 | o->op_ppaddr = PL_ppaddr[OP_PADSV]; |
93a17b20 | 6316 | return o; |
ed6116ce | 6317 | } |
79072805 LW |
6318 | return newUNOP(OP_RV2SV, 0, scalar(o)); |
6319 | } | |
6320 | ||
61b743bb DM |
6321 | /* Check routines. See the comments at the top of this file for details |
6322 | * on when these are called */ | |
79072805 LW |
6323 | |
6324 | OP * | |
cea2e8a9 | 6325 | Perl_ck_anoncode(pTHX_ OP *o) |
5f05dabc | 6326 | { |
7918f24d NC |
6327 | PERL_ARGS_ASSERT_CK_ANONCODE; |
6328 | ||
dd2155a4 | 6329 | cSVOPo->op_targ = pad_add_anon(cSVOPo->op_sv, o->op_type); |
eb8433b7 | 6330 | if (!PL_madskills) |
1d866c12 | 6331 | cSVOPo->op_sv = NULL; |
5dc0d613 | 6332 | return o; |
5f05dabc | 6333 | } |
6334 | ||
6335 | OP * | |
cea2e8a9 | 6336 | Perl_ck_bitop(pTHX_ OP *o) |
55497cff | 6337 | { |
97aff369 | 6338 | dVAR; |
7918f24d NC |
6339 | |
6340 | PERL_ARGS_ASSERT_CK_BITOP; | |
6341 | ||
276b2a0c RGS |
6342 | #define OP_IS_NUMCOMPARE(op) \ |
6343 | ((op) == OP_LT || (op) == OP_I_LT || \ | |
6344 | (op) == OP_GT || (op) == OP_I_GT || \ | |
6345 | (op) == OP_LE || (op) == OP_I_LE || \ | |
6346 | (op) == OP_GE || (op) == OP_I_GE || \ | |
6347 | (op) == OP_EQ || (op) == OP_I_EQ || \ | |
6348 | (op) == OP_NE || (op) == OP_I_NE || \ | |
6349 | (op) == OP_NCMP || (op) == OP_I_NCMP) | |
d5ec2987 | 6350 | o->op_private = (U8)(PL_hints & HINT_INTEGER); |
2b84528b RGS |
6351 | if (!(o->op_flags & OPf_STACKED) /* Not an assignment */ |
6352 | && (o->op_type == OP_BIT_OR | |
6353 | || o->op_type == OP_BIT_AND | |
6354 | || o->op_type == OP_BIT_XOR)) | |
276b2a0c | 6355 | { |
1df70142 AL |
6356 | const OP * const left = cBINOPo->op_first; |
6357 | const OP * const right = left->op_sibling; | |
96a925ab YST |
6358 | if ((OP_IS_NUMCOMPARE(left->op_type) && |
6359 | (left->op_flags & OPf_PARENS) == 0) || | |
6360 | (OP_IS_NUMCOMPARE(right->op_type) && | |
6361 | (right->op_flags & OPf_PARENS) == 0)) | |
276b2a0c RGS |
6362 | if (ckWARN(WARN_PRECEDENCE)) |
6363 | Perl_warner(aTHX_ packWARN(WARN_PRECEDENCE), | |
6364 | "Possible precedence problem on bitwise %c operator", | |
6365 | o->op_type == OP_BIT_OR ? '|' | |
6366 | : o->op_type == OP_BIT_AND ? '&' : '^' | |
6367 | ); | |
6368 | } | |
5dc0d613 | 6369 | return o; |
55497cff | 6370 | } |
6371 | ||
6372 | OP * | |
cea2e8a9 | 6373 | Perl_ck_concat(pTHX_ OP *o) |
79072805 | 6374 | { |
0bd48802 | 6375 | const OP * const kid = cUNOPo->op_first; |
7918f24d NC |
6376 | |
6377 | PERL_ARGS_ASSERT_CK_CONCAT; | |
96a5add6 | 6378 | PERL_UNUSED_CONTEXT; |
7918f24d | 6379 | |
df91b2c5 AE |
6380 | if (kid->op_type == OP_CONCAT && !(kid->op_private & OPpTARGET_MY) && |
6381 | !(kUNOP->op_first->op_flags & OPf_MOD)) | |
0165acc7 | 6382 | o->op_flags |= OPf_STACKED; |
11343788 | 6383 | return o; |
79072805 LW |
6384 | } |
6385 | ||
6386 | OP * | |
cea2e8a9 | 6387 | Perl_ck_spair(pTHX_ OP *o) |
79072805 | 6388 | { |
27da23d5 | 6389 | dVAR; |
7918f24d NC |
6390 | |
6391 | PERL_ARGS_ASSERT_CK_SPAIR; | |
6392 | ||
11343788 | 6393 | if (o->op_flags & OPf_KIDS) { |
79072805 | 6394 | OP* newop; |
a0d0e21e | 6395 | OP* kid; |
6867be6d | 6396 | const OPCODE type = o->op_type; |
5dc0d613 | 6397 | o = modkids(ck_fun(o), type); |
11343788 | 6398 | kid = cUNOPo->op_first; |
a0d0e21e | 6399 | newop = kUNOP->op_first->op_sibling; |
1496a290 AL |
6400 | if (newop) { |
6401 | const OPCODE type = newop->op_type; | |
6402 | if (newop->op_sibling || !(PL_opargs[type] & OA_RETSCALAR) || | |
6403 | type == OP_PADAV || type == OP_PADHV || | |
6404 | type == OP_RV2AV || type == OP_RV2HV) | |
6405 | return o; | |
a0d0e21e | 6406 | } |
eb8433b7 NC |
6407 | #ifdef PERL_MAD |
6408 | op_getmad(kUNOP->op_first,newop,'K'); | |
6409 | #else | |
a0d0e21e | 6410 | op_free(kUNOP->op_first); |
eb8433b7 | 6411 | #endif |
a0d0e21e LW |
6412 | kUNOP->op_first = newop; |
6413 | } | |
22c35a8c | 6414 | o->op_ppaddr = PL_ppaddr[++o->op_type]; |
11343788 | 6415 | return ck_fun(o); |
a0d0e21e LW |
6416 | } |
6417 | ||
6418 | OP * | |
cea2e8a9 | 6419 | Perl_ck_delete(pTHX_ OP *o) |
a0d0e21e | 6420 | { |
7918f24d NC |
6421 | PERL_ARGS_ASSERT_CK_DELETE; |
6422 | ||
11343788 | 6423 | o = ck_fun(o); |
5dc0d613 | 6424 | o->op_private = 0; |
11343788 | 6425 | if (o->op_flags & OPf_KIDS) { |
551405c4 | 6426 | OP * const kid = cUNOPo->op_first; |
01020589 GS |
6427 | switch (kid->op_type) { |
6428 | case OP_ASLICE: | |
6429 | o->op_flags |= OPf_SPECIAL; | |
6430 | /* FALL THROUGH */ | |
6431 | case OP_HSLICE: | |
5dc0d613 | 6432 | o->op_private |= OPpSLICE; |
01020589 GS |
6433 | break; |
6434 | case OP_AELEM: | |
6435 | o->op_flags |= OPf_SPECIAL; | |
6436 | /* FALL THROUGH */ | |
6437 | case OP_HELEM: | |
6438 | break; | |
6439 | default: | |
6440 | Perl_croak(aTHX_ "%s argument is not a HASH or ARRAY element or slice", | |
53e06cf0 | 6441 | OP_DESC(o)); |
01020589 | 6442 | } |
7332a6c4 VP |
6443 | if (kid->op_private & OPpLVAL_INTRO) |
6444 | o->op_private |= OPpLVAL_INTRO; | |
93c66552 | 6445 | op_null(kid); |
79072805 | 6446 | } |
11343788 | 6447 | return o; |
79072805 LW |
6448 | } |
6449 | ||
6450 | OP * | |
96e176bf CL |
6451 | Perl_ck_die(pTHX_ OP *o) |
6452 | { | |
7918f24d NC |
6453 | PERL_ARGS_ASSERT_CK_DIE; |
6454 | ||
96e176bf CL |
6455 | #ifdef VMS |
6456 | if (VMSISH_HUSHED) o->op_private |= OPpHUSH_VMSISH; | |
6457 | #endif | |
6458 | return ck_fun(o); | |
6459 | } | |
6460 | ||
6461 | OP * | |
cea2e8a9 | 6462 | Perl_ck_eof(pTHX_ OP *o) |
79072805 | 6463 | { |
97aff369 | 6464 | dVAR; |
79072805 | 6465 | |
7918f24d NC |
6466 | PERL_ARGS_ASSERT_CK_EOF; |
6467 | ||
11343788 MB |
6468 | if (o->op_flags & OPf_KIDS) { |
6469 | if (cLISTOPo->op_first->op_type == OP_STUB) { | |
1d866c12 AL |
6470 | OP * const newop |
6471 | = newUNOP(o->op_type, OPf_SPECIAL, newGVOP(OP_GV, 0, PL_argvgv)); | |
eb8433b7 NC |
6472 | #ifdef PERL_MAD |
6473 | op_getmad(o,newop,'O'); | |
6474 | #else | |
11343788 | 6475 | op_free(o); |
eb8433b7 NC |
6476 | #endif |
6477 | o = newop; | |
8990e307 | 6478 | } |
11343788 | 6479 | return ck_fun(o); |
79072805 | 6480 | } |
11343788 | 6481 | return o; |
79072805 LW |
6482 | } |
6483 | ||
6484 | OP * | |
cea2e8a9 | 6485 | Perl_ck_eval(pTHX_ OP *o) |
79072805 | 6486 | { |
27da23d5 | 6487 | dVAR; |
7918f24d NC |
6488 | |
6489 | PERL_ARGS_ASSERT_CK_EVAL; | |
6490 | ||
3280af22 | 6491 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 6492 | if (o->op_flags & OPf_KIDS) { |
46c461b5 | 6493 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
79072805 | 6494 | |
93a17b20 | 6495 | if (!kid) { |
11343788 | 6496 | o->op_flags &= ~OPf_KIDS; |
93c66552 | 6497 | op_null(o); |
79072805 | 6498 | } |
b14574b4 | 6499 | else if (kid->op_type == OP_LINESEQ || kid->op_type == OP_STUB) { |
79072805 | 6500 | LOGOP *enter; |
eb8433b7 | 6501 | #ifdef PERL_MAD |
1d866c12 | 6502 | OP* const oldo = o; |
eb8433b7 | 6503 | #endif |
79072805 | 6504 | |
11343788 | 6505 | cUNOPo->op_first = 0; |
eb8433b7 | 6506 | #ifndef PERL_MAD |
11343788 | 6507 | op_free(o); |
eb8433b7 | 6508 | #endif |
79072805 | 6509 | |
b7dc083c | 6510 | NewOp(1101, enter, 1, LOGOP); |
79072805 | 6511 | enter->op_type = OP_ENTERTRY; |
22c35a8c | 6512 | enter->op_ppaddr = PL_ppaddr[OP_ENTERTRY]; |
79072805 LW |
6513 | enter->op_private = 0; |
6514 | ||
6515 | /* establish postfix order */ | |
6516 | enter->op_next = (OP*)enter; | |
6517 | ||
3a7a94e2 RGS |
6518 | CHECKOP(OP_ENTERTRY, enter); |
6519 | ||
11343788 MB |
6520 | o = prepend_elem(OP_LINESEQ, (OP*)enter, (OP*)kid); |
6521 | o->op_type = OP_LEAVETRY; | |
22c35a8c | 6522 | o->op_ppaddr = PL_ppaddr[OP_LEAVETRY]; |
11343788 | 6523 | enter->op_other = o; |
eb8433b7 | 6524 | op_getmad(oldo,o,'O'); |
11343788 | 6525 | return o; |
79072805 | 6526 | } |
b5c19bd7 | 6527 | else { |
473986ff | 6528 | scalar((OP*)kid); |
b5c19bd7 DM |
6529 | PL_cv_has_eval = 1; |
6530 | } | |
79072805 LW |
6531 | } |
6532 | else { | |
eb8433b7 | 6533 | #ifdef PERL_MAD |
1d866c12 | 6534 | OP* const oldo = o; |
eb8433b7 | 6535 | #else |
11343788 | 6536 | op_free(o); |
eb8433b7 | 6537 | #endif |
54b9620d | 6538 | o = newUNOP(OP_ENTEREVAL, 0, newDEFSVOP()); |
eb8433b7 | 6539 | op_getmad(oldo,o,'O'); |
79072805 | 6540 | } |
3280af22 | 6541 | o->op_targ = (PADOFFSET)PL_hints; |
7168684c | 6542 | if ((PL_hints & HINT_LOCALIZE_HH) != 0 && GvHV(PL_hintgv)) { |
996c9baa VP |
6543 | /* Store a copy of %^H that pp_entereval can pick up. */ |
6544 | OP *hhop = newSVOP(OP_HINTSEVAL, 0, | |
ad64d0ec | 6545 | MUTABLE_SV(Perl_hv_copy_hints_hv(aTHX_ GvHV(PL_hintgv)))); |
0d863452 RH |
6546 | cUNOPo->op_first->op_sibling = hhop; |
6547 | o->op_private |= OPpEVAL_HAS_HH; | |
6548 | } | |
11343788 | 6549 | return o; |
79072805 LW |
6550 | } |
6551 | ||
6552 | OP * | |
d98f61e7 GS |
6553 | Perl_ck_exit(pTHX_ OP *o) |
6554 | { | |
7918f24d NC |
6555 | PERL_ARGS_ASSERT_CK_EXIT; |
6556 | ||
d98f61e7 | 6557 | #ifdef VMS |
551405c4 | 6558 | HV * const table = GvHV(PL_hintgv); |
d98f61e7 | 6559 | if (table) { |
a4fc7abc | 6560 | SV * const * const svp = hv_fetchs(table, "vmsish_exit", FALSE); |
d98f61e7 GS |
6561 | if (svp && *svp && SvTRUE(*svp)) |
6562 | o->op_private |= OPpEXIT_VMSISH; | |
6563 | } | |
96e176bf | 6564 | if (VMSISH_HUSHED) o->op_private |= OPpHUSH_VMSISH; |
d98f61e7 GS |
6565 | #endif |
6566 | return ck_fun(o); | |
6567 | } | |
6568 | ||
6569 | OP * | |
cea2e8a9 | 6570 | Perl_ck_exec(pTHX_ OP *o) |
79072805 | 6571 | { |
7918f24d NC |
6572 | PERL_ARGS_ASSERT_CK_EXEC; |
6573 | ||
11343788 | 6574 | if (o->op_flags & OPf_STACKED) { |
6867be6d | 6575 | OP *kid; |
11343788 MB |
6576 | o = ck_fun(o); |
6577 | kid = cUNOPo->op_first->op_sibling; | |
8990e307 | 6578 | if (kid->op_type == OP_RV2GV) |
93c66552 | 6579 | op_null(kid); |
79072805 | 6580 | } |
463ee0b2 | 6581 | else |
11343788 MB |
6582 | o = listkids(o); |
6583 | return o; | |
79072805 LW |
6584 | } |
6585 | ||
6586 | OP * | |
cea2e8a9 | 6587 | Perl_ck_exists(pTHX_ OP *o) |
5f05dabc | 6588 | { |
97aff369 | 6589 | dVAR; |
7918f24d NC |
6590 | |
6591 | PERL_ARGS_ASSERT_CK_EXISTS; | |
6592 | ||
5196be3e MB |
6593 | o = ck_fun(o); |
6594 | if (o->op_flags & OPf_KIDS) { | |
46c461b5 | 6595 | OP * const kid = cUNOPo->op_first; |
afebc493 GS |
6596 | if (kid->op_type == OP_ENTERSUB) { |
6597 | (void) ref(kid, o->op_type); | |
13765c85 DM |
6598 | if (kid->op_type != OP_RV2CV |
6599 | && !(PL_parser && PL_parser->error_count)) | |
afebc493 | 6600 | Perl_croak(aTHX_ "%s argument is not a subroutine name", |
53e06cf0 | 6601 | OP_DESC(o)); |
afebc493 GS |
6602 | o->op_private |= OPpEXISTS_SUB; |
6603 | } | |
6604 | else if (kid->op_type == OP_AELEM) | |
01020589 GS |
6605 | o->op_flags |= OPf_SPECIAL; |
6606 | else if (kid->op_type != OP_HELEM) | |
b0fdf69e | 6607 | Perl_croak(aTHX_ "%s argument is not a HASH or ARRAY element or a subroutine", |
53e06cf0 | 6608 | OP_DESC(o)); |
93c66552 | 6609 | op_null(kid); |
5f05dabc | 6610 | } |
5196be3e | 6611 | return o; |
5f05dabc | 6612 | } |
6613 | ||
79072805 | 6614 | OP * |
cea2e8a9 | 6615 | Perl_ck_rvconst(pTHX_ register OP *o) |
79072805 | 6616 | { |
27da23d5 | 6617 | dVAR; |
0bd48802 | 6618 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
85e6fe83 | 6619 | |
7918f24d NC |
6620 | PERL_ARGS_ASSERT_CK_RVCONST; |
6621 | ||
3280af22 | 6622 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
e26df76a NC |
6623 | if (o->op_type == OP_RV2CV) |
6624 | o->op_private &= ~1; | |
6625 | ||
79072805 | 6626 | if (kid->op_type == OP_CONST) { |
44a8e56a | 6627 | int iscv; |
6628 | GV *gv; | |
504618e9 | 6629 | SV * const kidsv = kid->op_sv; |
44a8e56a | 6630 | |
779c5bc9 GS |
6631 | /* Is it a constant from cv_const_sv()? */ |
6632 | if (SvROK(kidsv) && SvREADONLY(kidsv)) { | |
0bd48802 | 6633 | SV * const rsv = SvRV(kidsv); |
42d0e0b7 | 6634 | const svtype type = SvTYPE(rsv); |
bd61b366 | 6635 | const char *badtype = NULL; |
779c5bc9 GS |
6636 | |
6637 | switch (o->op_type) { | |
6638 | case OP_RV2SV: | |
42d0e0b7 | 6639 | if (type > SVt_PVMG) |
779c5bc9 GS |
6640 | badtype = "a SCALAR"; |
6641 | break; | |
6642 | case OP_RV2AV: | |
42d0e0b7 | 6643 | if (type != SVt_PVAV) |
779c5bc9 GS |
6644 | badtype = "an ARRAY"; |
6645 | break; | |
6646 | case OP_RV2HV: | |
42d0e0b7 | 6647 | if (type != SVt_PVHV) |
779c5bc9 | 6648 | badtype = "a HASH"; |
779c5bc9 GS |
6649 | break; |
6650 | case OP_RV2CV: | |
42d0e0b7 | 6651 | if (type != SVt_PVCV) |
779c5bc9 GS |
6652 | badtype = "a CODE"; |
6653 | break; | |
6654 | } | |
6655 | if (badtype) | |
cea2e8a9 | 6656 | Perl_croak(aTHX_ "Constant is not %s reference", badtype); |
779c5bc9 GS |
6657 | return o; |
6658 | } | |
ce10b5d1 RGS |
6659 | else if ((o->op_type == OP_RV2HV || o->op_type == OP_RV2SV) && |
6660 | (PL_hints & HINT_STRICT_REFS) && SvPOK(kidsv)) { | |
6661 | /* If this is an access to a stash, disable "strict refs", because | |
6662 | * stashes aren't auto-vivified at compile-time (unless we store | |
6663 | * symbols in them), and we don't want to produce a run-time | |
6664 | * stricture error when auto-vivifying the stash. */ | |
6665 | const char *s = SvPV_nolen(kidsv); | |
6666 | const STRLEN l = SvCUR(kidsv); | |
6667 | if (l > 1 && s[l-1] == ':' && s[l-2] == ':') | |
6668 | o->op_private &= ~HINT_STRICT_REFS; | |
6669 | } | |
6670 | if ((o->op_private & HINT_STRICT_REFS) && (kid->op_private & OPpCONST_BARE)) { | |
5f66b61c | 6671 | const char *badthing; |
5dc0d613 | 6672 | switch (o->op_type) { |
44a8e56a | 6673 | case OP_RV2SV: |
6674 | badthing = "a SCALAR"; | |
6675 | break; | |
6676 | case OP_RV2AV: | |
6677 | badthing = "an ARRAY"; | |
6678 | break; | |
6679 | case OP_RV2HV: | |
6680 | badthing = "a HASH"; | |
6681 | break; | |
5f66b61c AL |
6682 | default: |
6683 | badthing = NULL; | |
6684 | break; | |
44a8e56a | 6685 | } |
6686 | if (badthing) | |
1c846c1f | 6687 | Perl_croak(aTHX_ |
95b63a38 | 6688 | "Can't use bareword (\"%"SVf"\") as %s ref while \"strict refs\" in use", |
be2597df | 6689 | SVfARG(kidsv), badthing); |
44a8e56a | 6690 | } |
93233ece CS |
6691 | /* |
6692 | * This is a little tricky. We only want to add the symbol if we | |
6693 | * didn't add it in the lexer. Otherwise we get duplicate strict | |
6694 | * warnings. But if we didn't add it in the lexer, we must at | |
6695 | * least pretend like we wanted to add it even if it existed before, | |
6696 | * or we get possible typo warnings. OPpCONST_ENTERED says | |
6697 | * whether the lexer already added THIS instance of this symbol. | |
6698 | */ | |
5196be3e | 6699 | iscv = (o->op_type == OP_RV2CV) * 2; |
93233ece | 6700 | do { |
7a5fd60d | 6701 | gv = gv_fetchsv(kidsv, |
748a9306 | 6702 | iscv | !(kid->op_private & OPpCONST_ENTERED), |
a0d0e21e LW |
6703 | iscv |
6704 | ? SVt_PVCV | |
11343788 | 6705 | : o->op_type == OP_RV2SV |
a0d0e21e | 6706 | ? SVt_PV |
11343788 | 6707 | : o->op_type == OP_RV2AV |
a0d0e21e | 6708 | ? SVt_PVAV |
11343788 | 6709 | : o->op_type == OP_RV2HV |
a0d0e21e LW |
6710 | ? SVt_PVHV |
6711 | : SVt_PVGV); | |
93233ece CS |
6712 | } while (!gv && !(kid->op_private & OPpCONST_ENTERED) && !iscv++); |
6713 | if (gv) { | |
6714 | kid->op_type = OP_GV; | |
6715 | SvREFCNT_dec(kid->op_sv); | |
350de78d | 6716 | #ifdef USE_ITHREADS |
638eceb6 | 6717 | /* XXX hack: dependence on sizeof(PADOP) <= sizeof(SVOP) */ |
350de78d | 6718 | kPADOP->op_padix = pad_alloc(OP_GV, SVs_PADTMP); |
dd2155a4 | 6719 | SvREFCNT_dec(PAD_SVl(kPADOP->op_padix)); |
743e66e6 | 6720 | GvIN_PAD_on(gv); |
ad64d0ec | 6721 | PAD_SETSV(kPADOP->op_padix, MUTABLE_SV(SvREFCNT_inc_simple_NN(gv))); |
350de78d | 6722 | #else |
b37c2d43 | 6723 | kid->op_sv = SvREFCNT_inc_simple_NN(gv); |
350de78d | 6724 | #endif |
23f1ca44 | 6725 | kid->op_private = 0; |
76cd736e | 6726 | kid->op_ppaddr = PL_ppaddr[OP_GV]; |
a0d0e21e | 6727 | } |
79072805 | 6728 | } |
11343788 | 6729 | return o; |
79072805 LW |
6730 | } |
6731 | ||
6732 | OP * | |
cea2e8a9 | 6733 | Perl_ck_ftst(pTHX_ OP *o) |
79072805 | 6734 | { |
27da23d5 | 6735 | dVAR; |
6867be6d | 6736 | const I32 type = o->op_type; |
79072805 | 6737 | |
7918f24d NC |
6738 | PERL_ARGS_ASSERT_CK_FTST; |
6739 | ||
d0dca557 | 6740 | if (o->op_flags & OPf_REF) { |
6f207bd3 | 6741 | NOOP; |
d0dca557 JD |
6742 | } |
6743 | else if (o->op_flags & OPf_KIDS && cUNOPo->op_first->op_type != OP_STUB) { | |
551405c4 | 6744 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
1496a290 | 6745 | const OPCODE kidtype = kid->op_type; |
79072805 | 6746 | |
1496a290 | 6747 | if (kidtype == OP_CONST && (kid->op_private & OPpCONST_BARE)) { |
551405c4 | 6748 | OP * const newop = newGVOP(type, OPf_REF, |
f776e3cd | 6749 | gv_fetchsv(kid->op_sv, GV_ADD, SVt_PVIO)); |
eb8433b7 NC |
6750 | #ifdef PERL_MAD |
6751 | op_getmad(o,newop,'O'); | |
6752 | #else | |
11343788 | 6753 | op_free(o); |
eb8433b7 | 6754 | #endif |
1d866c12 | 6755 | return newop; |
79072805 | 6756 | } |
6ecf81d6 | 6757 | if ((PL_hints & HINT_FILETEST_ACCESS) && OP_IS_FILETEST_ACCESS(o->op_type)) |
1af34c76 | 6758 | o->op_private |= OPpFT_ACCESS; |
1496a290 AL |
6759 | if (PL_check[kidtype] == MEMBER_TO_FPTR(Perl_ck_ftst) |
6760 | && kidtype != OP_STAT && kidtype != OP_LSTAT) | |
fbb0b3b3 | 6761 | o->op_private |= OPpFT_STACKED; |
79072805 LW |
6762 | } |
6763 | else { | |
eb8433b7 | 6764 | #ifdef PERL_MAD |
1d866c12 | 6765 | OP* const oldo = o; |
eb8433b7 | 6766 | #else |
11343788 | 6767 | op_free(o); |
eb8433b7 | 6768 | #endif |
79072805 | 6769 | if (type == OP_FTTTY) |
8fde6460 | 6770 | o = newGVOP(type, OPf_REF, PL_stdingv); |
79072805 | 6771 | else |
d0dca557 | 6772 | o = newUNOP(type, 0, newDEFSVOP()); |
eb8433b7 | 6773 | op_getmad(oldo,o,'O'); |
79072805 | 6774 | } |
11343788 | 6775 | return o; |
79072805 LW |
6776 | } |
6777 | ||
6778 | OP * | |
cea2e8a9 | 6779 | Perl_ck_fun(pTHX_ OP *o) |
79072805 | 6780 | { |
97aff369 | 6781 | dVAR; |
6867be6d | 6782 | const int type = o->op_type; |
22c35a8c | 6783 | register I32 oa = PL_opargs[type] >> OASHIFT; |
aeea060c | 6784 | |
7918f24d NC |
6785 | PERL_ARGS_ASSERT_CK_FUN; |
6786 | ||
11343788 | 6787 | if (o->op_flags & OPf_STACKED) { |
79072805 LW |
6788 | if ((oa & OA_OPTIONAL) && (oa >> 4) && !((oa >> 4) & OA_OPTIONAL)) |
6789 | oa &= ~OA_OPTIONAL; | |
6790 | else | |
11343788 | 6791 | return no_fh_allowed(o); |
79072805 LW |
6792 | } |
6793 | ||
11343788 | 6794 | if (o->op_flags & OPf_KIDS) { |
6867be6d AL |
6795 | OP **tokid = &cLISTOPo->op_first; |
6796 | register OP *kid = cLISTOPo->op_first; | |
6797 | OP *sibl; | |
6798 | I32 numargs = 0; | |
6799 | ||
8990e307 | 6800 | if (kid->op_type == OP_PUSHMARK || |
155aba94 | 6801 | (kid->op_type == OP_NULL && kid->op_targ == OP_PUSHMARK)) |
8990e307 | 6802 | { |
79072805 LW |
6803 | tokid = &kid->op_sibling; |
6804 | kid = kid->op_sibling; | |
6805 | } | |
22c35a8c | 6806 | if (!kid && PL_opargs[type] & OA_DEFGV) |
54b9620d | 6807 | *tokid = kid = newDEFSVOP(); |
79072805 LW |
6808 | |
6809 | while (oa && kid) { | |
6810 | numargs++; | |
6811 | sibl = kid->op_sibling; | |
eb8433b7 NC |
6812 | #ifdef PERL_MAD |
6813 | if (!sibl && kid->op_type == OP_STUB) { | |
6814 | numargs--; | |
6815 | break; | |
6816 | } | |
6817 | #endif | |
79072805 LW |
6818 | switch (oa & 7) { |
6819 | case OA_SCALAR: | |
62c18ce2 GS |
6820 | /* list seen where single (scalar) arg expected? */ |
6821 | if (numargs == 1 && !(oa >> 4) | |
6822 | && kid->op_type == OP_LIST && type != OP_SCALAR) | |
6823 | { | |
6824 | return too_many_arguments(o,PL_op_desc[type]); | |
6825 | } | |
79072805 LW |
6826 | scalar(kid); |
6827 | break; | |
6828 | case OA_LIST: | |
6829 | if (oa < 16) { | |
6830 | kid = 0; | |
6831 | continue; | |
6832 | } | |
6833 | else | |
6834 | list(kid); | |
6835 | break; | |
6836 | case OA_AVREF: | |
936edb8b | 6837 | if ((type == OP_PUSH || type == OP_UNSHIFT) |
f87c3213 | 6838 | && !kid->op_sibling && ckWARN(WARN_SYNTAX)) |
9014280d | 6839 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
de4864e4 | 6840 | "Useless use of %s with no values", |
936edb8b | 6841 | PL_op_desc[type]); |
b2ffa427 | 6842 | |
79072805 | 6843 | if (kid->op_type == OP_CONST && |
62c18ce2 GS |
6844 | (kid->op_private & OPpCONST_BARE)) |
6845 | { | |
551405c4 | 6846 | OP * const newop = newAVREF(newGVOP(OP_GV, 0, |
f776e3cd | 6847 | gv_fetchsv(((SVOP*)kid)->op_sv, GV_ADD, SVt_PVAV) )); |
12bcd1a6 PM |
6848 | if (ckWARN2(WARN_DEPRECATED, WARN_SYNTAX)) |
6849 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), | |
7a5fd60d | 6850 | "Array @%"SVf" missing the @ in argument %"IVdf" of %s()", |
be2597df | 6851 | SVfARG(((SVOP*)kid)->op_sv), (IV)numargs, PL_op_desc[type]); |
eb8433b7 NC |
6852 | #ifdef PERL_MAD |
6853 | op_getmad(kid,newop,'K'); | |
6854 | #else | |
79072805 | 6855 | op_free(kid); |
eb8433b7 | 6856 | #endif |
79072805 LW |
6857 | kid = newop; |
6858 | kid->op_sibling = sibl; | |
6859 | *tokid = kid; | |
6860 | } | |
8990e307 | 6861 | else if (kid->op_type != OP_RV2AV && kid->op_type != OP_PADAV) |
35cd451c | 6862 | bad_type(numargs, "array", PL_op_desc[type], kid); |
a0d0e21e | 6863 | mod(kid, type); |
79072805 LW |
6864 | break; |
6865 | case OA_HVREF: | |
6866 | if (kid->op_type == OP_CONST && | |
62c18ce2 GS |
6867 | (kid->op_private & OPpCONST_BARE)) |
6868 | { | |
551405c4 | 6869 | OP * const newop = newHVREF(newGVOP(OP_GV, 0, |
f776e3cd | 6870 | gv_fetchsv(((SVOP*)kid)->op_sv, GV_ADD, SVt_PVHV) )); |
12bcd1a6 PM |
6871 | if (ckWARN2(WARN_DEPRECATED, WARN_SYNTAX)) |
6872 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), | |
7a5fd60d | 6873 | "Hash %%%"SVf" missing the %% in argument %"IVdf" of %s()", |
be2597df | 6874 | SVfARG(((SVOP*)kid)->op_sv), (IV)numargs, PL_op_desc[type]); |
eb8433b7 NC |
6875 | #ifdef PERL_MAD |
6876 | op_getmad(kid,newop,'K'); | |
6877 | #else | |
79072805 | 6878 | op_free(kid); |
eb8433b7 | 6879 | #endif |
79072805 LW |
6880 | kid = newop; |
6881 | kid->op_sibling = sibl; | |
6882 | *tokid = kid; | |
6883 | } | |
8990e307 | 6884 | else if (kid->op_type != OP_RV2HV && kid->op_type != OP_PADHV) |
35cd451c | 6885 | bad_type(numargs, "hash", PL_op_desc[type], kid); |
a0d0e21e | 6886 | mod(kid, type); |
79072805 LW |
6887 | break; |
6888 | case OA_CVREF: | |
6889 | { | |
551405c4 | 6890 | OP * const newop = newUNOP(OP_NULL, 0, kid); |
79072805 LW |
6891 | kid->op_sibling = 0; |
6892 | linklist(kid); | |
6893 | newop->op_next = newop; | |
6894 | kid = newop; | |
6895 | kid->op_sibling = sibl; | |
6896 | *tokid = kid; | |
6897 | } | |
6898 | break; | |
6899 | case OA_FILEREF: | |
c340be78 | 6900 | if (kid->op_type != OP_GV && kid->op_type != OP_RV2GV) { |
79072805 | 6901 | if (kid->op_type == OP_CONST && |
62c18ce2 GS |
6902 | (kid->op_private & OPpCONST_BARE)) |
6903 | { | |
0bd48802 | 6904 | OP * const newop = newGVOP(OP_GV, 0, |
f776e3cd | 6905 | gv_fetchsv(((SVOP*)kid)->op_sv, GV_ADD, SVt_PVIO)); |
afbdacea | 6906 | if (!(o->op_private & 1) && /* if not unop */ |
8a996ce8 | 6907 | kid == cLISTOPo->op_last) |
364daeac | 6908 | cLISTOPo->op_last = newop; |
eb8433b7 NC |
6909 | #ifdef PERL_MAD |
6910 | op_getmad(kid,newop,'K'); | |
6911 | #else | |
79072805 | 6912 | op_free(kid); |
eb8433b7 | 6913 | #endif |
79072805 LW |
6914 | kid = newop; |
6915 | } | |
1ea32a52 GS |
6916 | else if (kid->op_type == OP_READLINE) { |
6917 | /* neophyte patrol: open(<FH>), close(<FH>) etc. */ | |
53e06cf0 | 6918 | bad_type(numargs, "HANDLE", OP_DESC(o), kid); |
1ea32a52 | 6919 | } |
79072805 | 6920 | else { |
35cd451c | 6921 | I32 flags = OPf_SPECIAL; |
a6c40364 | 6922 | I32 priv = 0; |
2c8ac474 GS |
6923 | PADOFFSET targ = 0; |
6924 | ||
35cd451c | 6925 | /* is this op a FH constructor? */ |
853846ea | 6926 | if (is_handle_constructor(o,numargs)) { |
bd61b366 | 6927 | const char *name = NULL; |
dd2155a4 | 6928 | STRLEN len = 0; |
2c8ac474 GS |
6929 | |
6930 | flags = 0; | |
6931 | /* Set a flag to tell rv2gv to vivify | |
853846ea NIS |
6932 | * need to "prove" flag does not mean something |
6933 | * else already - NI-S 1999/05/07 | |
2c8ac474 GS |
6934 | */ |
6935 | priv = OPpDEREF; | |
6936 | if (kid->op_type == OP_PADSV) { | |
f8503592 NC |
6937 | SV *const namesv |
6938 | = PAD_COMPNAME_SV(kid->op_targ); | |
6939 | name = SvPV_const(namesv, len); | |
2c8ac474 GS |
6940 | } |
6941 | else if (kid->op_type == OP_RV2SV | |
6942 | && kUNOP->op_first->op_type == OP_GV) | |
6943 | { | |
0bd48802 | 6944 | GV * const gv = cGVOPx_gv(kUNOP->op_first); |
2c8ac474 GS |
6945 | name = GvNAME(gv); |
6946 | len = GvNAMELEN(gv); | |
6947 | } | |
afd1915d GS |
6948 | else if (kid->op_type == OP_AELEM |
6949 | || kid->op_type == OP_HELEM) | |
6950 | { | |
735fec84 | 6951 | OP *firstop; |
551405c4 | 6952 | OP *op = ((BINOP*)kid)->op_first; |
a4fc7abc | 6953 | name = NULL; |
551405c4 | 6954 | if (op) { |
a0714e2c | 6955 | SV *tmpstr = NULL; |
551405c4 | 6956 | const char * const a = |
666ea192 JH |
6957 | kid->op_type == OP_AELEM ? |
6958 | "[]" : "{}"; | |
0c4b0a3f JH |
6959 | if (((op->op_type == OP_RV2AV) || |
6960 | (op->op_type == OP_RV2HV)) && | |
735fec84 RGS |
6961 | (firstop = ((UNOP*)op)->op_first) && |
6962 | (firstop->op_type == OP_GV)) { | |
0c4b0a3f | 6963 | /* packagevar $a[] or $h{} */ |
735fec84 | 6964 | GV * const gv = cGVOPx_gv(firstop); |
0c4b0a3f JH |
6965 | if (gv) |
6966 | tmpstr = | |
6967 | Perl_newSVpvf(aTHX_ | |
6968 | "%s%c...%c", | |
6969 | GvNAME(gv), | |
6970 | a[0], a[1]); | |
6971 | } | |
6972 | else if (op->op_type == OP_PADAV | |
6973 | || op->op_type == OP_PADHV) { | |
6974 | /* lexicalvar $a[] or $h{} */ | |
551405c4 | 6975 | const char * const padname = |
0c4b0a3f JH |
6976 | PAD_COMPNAME_PV(op->op_targ); |
6977 | if (padname) | |
6978 | tmpstr = | |
6979 | Perl_newSVpvf(aTHX_ | |
6980 | "%s%c...%c", | |
6981 | padname + 1, | |
6982 | a[0], a[1]); | |
0c4b0a3f JH |
6983 | } |
6984 | if (tmpstr) { | |
93524f2b | 6985 | name = SvPV_const(tmpstr, len); |
0c4b0a3f JH |
6986 | sv_2mortal(tmpstr); |
6987 | } | |
6988 | } | |
6989 | if (!name) { | |
6990 | name = "__ANONIO__"; | |
6991 | len = 10; | |
6992 | } | |
6993 | mod(kid, type); | |
afd1915d | 6994 | } |
2c8ac474 GS |
6995 | if (name) { |
6996 | SV *namesv; | |
6997 | targ = pad_alloc(OP_RV2GV, SVs_PADTMP); | |
dd2155a4 | 6998 | namesv = PAD_SVl(targ); |
862a34c6 | 6999 | SvUPGRADE(namesv, SVt_PV); |
2c8ac474 | 7000 | if (*name != '$') |
76f68e9b | 7001 | sv_setpvs(namesv, "$"); |
2c8ac474 GS |
7002 | sv_catpvn(namesv, name, len); |
7003 | } | |
853846ea | 7004 | } |
79072805 | 7005 | kid->op_sibling = 0; |
35cd451c | 7006 | kid = newUNOP(OP_RV2GV, flags, scalar(kid)); |
2c8ac474 GS |
7007 | kid->op_targ = targ; |
7008 | kid->op_private |= priv; | |
79072805 LW |
7009 | } |
7010 | kid->op_sibling = sibl; | |
7011 | *tokid = kid; | |
7012 | } | |
7013 | scalar(kid); | |
7014 | break; | |
7015 | case OA_SCALARREF: | |
a0d0e21e | 7016 | mod(scalar(kid), type); |
79072805 LW |
7017 | break; |
7018 | } | |
7019 | oa >>= 4; | |
7020 | tokid = &kid->op_sibling; | |
7021 | kid = kid->op_sibling; | |
7022 | } | |
eb8433b7 NC |
7023 | #ifdef PERL_MAD |
7024 | if (kid && kid->op_type != OP_STUB) | |
7025 | return too_many_arguments(o,OP_DESC(o)); | |
7026 | o->op_private |= numargs; | |
7027 | #else | |
7028 | /* FIXME - should the numargs move as for the PERL_MAD case? */ | |
11343788 | 7029 | o->op_private |= numargs; |
79072805 | 7030 | if (kid) |
53e06cf0 | 7031 | return too_many_arguments(o,OP_DESC(o)); |
eb8433b7 | 7032 | #endif |
11343788 | 7033 | listkids(o); |
79072805 | 7034 | } |
22c35a8c | 7035 | else if (PL_opargs[type] & OA_DEFGV) { |
c56915e3 | 7036 | #ifdef PERL_MAD |
c7fe699d | 7037 | OP *newop = newUNOP(type, 0, newDEFSVOP()); |
c56915e3 | 7038 | op_getmad(o,newop,'O'); |
c7fe699d | 7039 | return newop; |
c56915e3 | 7040 | #else |
c7fe699d | 7041 | /* Ordering of these two is important to keep f_map.t passing. */ |
11343788 | 7042 | op_free(o); |
c7fe699d | 7043 | return newUNOP(type, 0, newDEFSVOP()); |
c56915e3 | 7044 | #endif |
a0d0e21e LW |
7045 | } |
7046 | ||
79072805 LW |
7047 | if (oa) { |
7048 | while (oa & OA_OPTIONAL) | |
7049 | oa >>= 4; | |
7050 | if (oa && oa != OA_LIST) | |
53e06cf0 | 7051 | return too_few_arguments(o,OP_DESC(o)); |
79072805 | 7052 | } |
11343788 | 7053 | return o; |
79072805 LW |
7054 | } |
7055 | ||
7056 | OP * | |
cea2e8a9 | 7057 | Perl_ck_glob(pTHX_ OP *o) |
79072805 | 7058 | { |
27da23d5 | 7059 | dVAR; |
fb73857a | 7060 | GV *gv; |
7061 | ||
7918f24d NC |
7062 | PERL_ARGS_ASSERT_CK_GLOB; |
7063 | ||
649da076 | 7064 | o = ck_fun(o); |
1f2bfc8a | 7065 | if ((o->op_flags & OPf_KIDS) && !cLISTOPo->op_first->op_sibling) |
54b9620d | 7066 | append_elem(OP_GLOB, o, newDEFSVOP()); |
fb73857a | 7067 | |
fafc274c | 7068 | if (!((gv = gv_fetchpvs("glob", GV_NOTQUAL, SVt_PVCV)) |
b9f751c0 GS |
7069 | && GvCVu(gv) && GvIMPORTED_CV(gv))) |
7070 | { | |
5c1737d1 | 7071 | gv = gv_fetchpvs("CORE::GLOBAL::glob", 0, SVt_PVCV); |
b9f751c0 | 7072 | } |
b1cb66bf | 7073 | |
52bb0670 | 7074 | #if !defined(PERL_EXTERNAL_GLOB) |
72b16652 | 7075 | /* XXX this can be tightened up and made more failsafe. */ |
f444d496 | 7076 | if (!(gv && GvCVu(gv) && GvIMPORTED_CV(gv))) { |
7d3fb230 | 7077 | GV *glob_gv; |
72b16652 | 7078 | ENTER; |
00ca71c1 | 7079 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, |
a0714e2c | 7080 | newSVpvs("File::Glob"), NULL, NULL, NULL); |
5c1737d1 NC |
7081 | gv = gv_fetchpvs("CORE::GLOBAL::glob", 0, SVt_PVCV); |
7082 | glob_gv = gv_fetchpvs("File::Glob::csh_glob", 0, SVt_PVCV); | |
7d3fb230 | 7083 | GvCV(gv) = GvCV(glob_gv); |
ad64d0ec | 7084 | SvREFCNT_inc_void(MUTABLE_SV(GvCV(gv))); |
7d3fb230 | 7085 | GvIMPORTED_CV_on(gv); |
72b16652 GS |
7086 | LEAVE; |
7087 | } | |
52bb0670 | 7088 | #endif /* PERL_EXTERNAL_GLOB */ |
72b16652 | 7089 | |
b9f751c0 | 7090 | if (gv && GvCVu(gv) && GvIMPORTED_CV(gv)) { |
5196be3e | 7091 | append_elem(OP_GLOB, o, |
80252599 | 7092 | newSVOP(OP_CONST, 0, newSViv(PL_glob_index++))); |
1f2bfc8a | 7093 | o->op_type = OP_LIST; |
22c35a8c | 7094 | o->op_ppaddr = PL_ppaddr[OP_LIST]; |
1f2bfc8a | 7095 | cLISTOPo->op_first->op_type = OP_PUSHMARK; |
22c35a8c | 7096 | cLISTOPo->op_first->op_ppaddr = PL_ppaddr[OP_PUSHMARK]; |
ad33f57d | 7097 | cLISTOPo->op_first->op_targ = 0; |
1f2bfc8a | 7098 | o = newUNOP(OP_ENTERSUB, OPf_STACKED, |
aeea060c | 7099 | append_elem(OP_LIST, o, |
1f2bfc8a MB |
7100 | scalar(newUNOP(OP_RV2CV, 0, |
7101 | newGVOP(OP_GV, 0, gv))))); | |
d58bf5aa MB |
7102 | o = newUNOP(OP_NULL, 0, ck_subr(o)); |
7103 | o->op_targ = OP_GLOB; /* hint at what it used to be */ | |
7104 | return o; | |
b1cb66bf | 7105 | } |
7106 | gv = newGVgen("main"); | |
a0d0e21e | 7107 | gv_IOadd(gv); |
11343788 MB |
7108 | append_elem(OP_GLOB, o, newGVOP(OP_GV, 0, gv)); |
7109 | scalarkids(o); | |
649da076 | 7110 | return o; |
79072805 LW |
7111 | } |
7112 | ||
7113 | OP * | |
cea2e8a9 | 7114 | Perl_ck_grep(pTHX_ OP *o) |
79072805 | 7115 | { |
27da23d5 | 7116 | dVAR; |
03ca120d | 7117 | LOGOP *gwop = NULL; |
79072805 | 7118 | OP *kid; |
6867be6d | 7119 | const OPCODE type = o->op_type == OP_GREPSTART ? OP_GREPWHILE : OP_MAPWHILE; |
9f7d9405 | 7120 | PADOFFSET offset; |
79072805 | 7121 | |
7918f24d NC |
7122 | PERL_ARGS_ASSERT_CK_GREP; |
7123 | ||
22c35a8c | 7124 | o->op_ppaddr = PL_ppaddr[OP_GREPSTART]; |
13765c85 | 7125 | /* don't allocate gwop here, as we may leak it if PL_parser->error_count > 0 */ |
aeea060c | 7126 | |
11343788 | 7127 | if (o->op_flags & OPf_STACKED) { |
a0d0e21e | 7128 | OP* k; |
11343788 MB |
7129 | o = ck_sort(o); |
7130 | kid = cLISTOPo->op_first->op_sibling; | |
d09ad856 BS |
7131 | if (!cUNOPx(kid)->op_next) |
7132 | Perl_croak(aTHX_ "panic: ck_grep"); | |
e3c9a8b9 | 7133 | for (k = cUNOPx(kid)->op_first; k; k = k->op_next) { |
a0d0e21e LW |
7134 | kid = k; |
7135 | } | |
03ca120d | 7136 | NewOp(1101, gwop, 1, LOGOP); |
a0d0e21e | 7137 | kid->op_next = (OP*)gwop; |
11343788 | 7138 | o->op_flags &= ~OPf_STACKED; |
93a17b20 | 7139 | } |
11343788 | 7140 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e LW |
7141 | if (type == OP_MAPWHILE) |
7142 | list(kid); | |
7143 | else | |
7144 | scalar(kid); | |
11343788 | 7145 | o = ck_fun(o); |
13765c85 | 7146 | if (PL_parser && PL_parser->error_count) |
11343788 | 7147 | return o; |
aeea060c | 7148 | kid = cLISTOPo->op_first->op_sibling; |
79072805 | 7149 | if (kid->op_type != OP_NULL) |
cea2e8a9 | 7150 | Perl_croak(aTHX_ "panic: ck_grep"); |
79072805 LW |
7151 | kid = kUNOP->op_first; |
7152 | ||
03ca120d MHM |
7153 | if (!gwop) |
7154 | NewOp(1101, gwop, 1, LOGOP); | |
a0d0e21e | 7155 | gwop->op_type = type; |
22c35a8c | 7156 | gwop->op_ppaddr = PL_ppaddr[type]; |
11343788 | 7157 | gwop->op_first = listkids(o); |
79072805 | 7158 | gwop->op_flags |= OPf_KIDS; |
79072805 | 7159 | gwop->op_other = LINKLIST(kid); |
79072805 | 7160 | kid->op_next = (OP*)gwop; |
59f00321 | 7161 | offset = pad_findmy("$_"); |
00b1698f | 7162 | if (offset == NOT_IN_PAD || PAD_COMPNAME_FLAGS_isOUR(offset)) { |
59f00321 RGS |
7163 | o->op_private = gwop->op_private = 0; |
7164 | gwop->op_targ = pad_alloc(type, SVs_PADTMP); | |
7165 | } | |
7166 | else { | |
7167 | o->op_private = gwop->op_private = OPpGREP_LEX; | |
7168 | gwop->op_targ = o->op_targ = offset; | |
7169 | } | |
79072805 | 7170 | |
11343788 | 7171 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e | 7172 | if (!kid || !kid->op_sibling) |
53e06cf0 | 7173 | return too_few_arguments(o,OP_DESC(o)); |
a0d0e21e LW |
7174 | for (kid = kid->op_sibling; kid; kid = kid->op_sibling) |
7175 | mod(kid, OP_GREPSTART); | |
7176 | ||
79072805 LW |
7177 | return (OP*)gwop; |
7178 | } | |
7179 | ||
7180 | OP * | |
cea2e8a9 | 7181 | Perl_ck_index(pTHX_ OP *o) |
79072805 | 7182 | { |
7918f24d NC |
7183 | PERL_ARGS_ASSERT_CK_INDEX; |
7184 | ||
11343788 MB |
7185 | if (o->op_flags & OPf_KIDS) { |
7186 | OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
0b71040e LW |
7187 | if (kid) |
7188 | kid = kid->op_sibling; /* get past "big" */ | |
79072805 | 7189 | if (kid && kid->op_type == OP_CONST) |
2779dcf1 | 7190 | fbm_compile(((SVOP*)kid)->op_sv, 0); |
79072805 | 7191 | } |
11343788 | 7192 | return ck_fun(o); |
79072805 LW |
7193 | } |
7194 | ||
7195 | OP * | |
cea2e8a9 | 7196 | Perl_ck_lfun(pTHX_ OP *o) |
79072805 | 7197 | { |
6867be6d | 7198 | const OPCODE type = o->op_type; |
7918f24d NC |
7199 | |
7200 | PERL_ARGS_ASSERT_CK_LFUN; | |
7201 | ||
5dc0d613 | 7202 | return modkids(ck_fun(o), type); |
79072805 LW |
7203 | } |
7204 | ||
7205 | OP * | |
cea2e8a9 | 7206 | Perl_ck_defined(pTHX_ OP *o) /* 19990527 MJD */ |
69794302 | 7207 | { |
7918f24d NC |
7208 | PERL_ARGS_ASSERT_CK_DEFINED; |
7209 | ||
12bcd1a6 | 7210 | if ((o->op_flags & OPf_KIDS) && ckWARN2(WARN_DEPRECATED, WARN_SYNTAX)) { |
d0334bed GS |
7211 | switch (cUNOPo->op_first->op_type) { |
7212 | case OP_RV2AV: | |
a8739d98 JH |
7213 | /* This is needed for |
7214 | if (defined %stash::) | |
7215 | to work. Do not break Tk. | |
7216 | */ | |
1c846c1f | 7217 | break; /* Globals via GV can be undef */ |
d0334bed GS |
7218 | case OP_PADAV: |
7219 | case OP_AASSIGN: /* Is this a good idea? */ | |
12bcd1a6 | 7220 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
f10b0346 | 7221 | "defined(@array) is deprecated"); |
12bcd1a6 | 7222 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
cc507455 | 7223 | "\t(Maybe you should just omit the defined()?)\n"); |
69794302 | 7224 | break; |
d0334bed | 7225 | case OP_RV2HV: |
a8739d98 JH |
7226 | /* This is needed for |
7227 | if (defined %stash::) | |
7228 | to work. Do not break Tk. | |
7229 | */ | |
1c846c1f | 7230 | break; /* Globals via GV can be undef */ |
d0334bed | 7231 | case OP_PADHV: |
12bcd1a6 | 7232 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
894356b3 | 7233 | "defined(%%hash) is deprecated"); |
12bcd1a6 | 7234 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
cc507455 | 7235 | "\t(Maybe you should just omit the defined()?)\n"); |
d0334bed GS |
7236 | break; |
7237 | default: | |
7238 | /* no warning */ | |
7239 | break; | |
7240 | } | |
69794302 MJD |
7241 | } |
7242 | return ck_rfun(o); | |
7243 | } | |
7244 | ||
7245 | OP * | |
e4b7ebf3 RGS |
7246 | Perl_ck_readline(pTHX_ OP *o) |
7247 | { | |
7918f24d NC |
7248 | PERL_ARGS_ASSERT_CK_READLINE; |
7249 | ||
e4b7ebf3 RGS |
7250 | if (!(o->op_flags & OPf_KIDS)) { |
7251 | OP * const newop | |
7252 | = newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, PL_argvgv)); | |
7253 | #ifdef PERL_MAD | |
7254 | op_getmad(o,newop,'O'); | |
7255 | #else | |
7256 | op_free(o); | |
7257 | #endif | |
7258 | return newop; | |
7259 | } | |
7260 | return o; | |
7261 | } | |
7262 | ||
7263 | OP * | |
cea2e8a9 | 7264 | Perl_ck_rfun(pTHX_ OP *o) |
8990e307 | 7265 | { |
6867be6d | 7266 | const OPCODE type = o->op_type; |
7918f24d NC |
7267 | |
7268 | PERL_ARGS_ASSERT_CK_RFUN; | |
7269 | ||
5dc0d613 | 7270 | return refkids(ck_fun(o), type); |
8990e307 LW |
7271 | } |
7272 | ||
7273 | OP * | |
cea2e8a9 | 7274 | Perl_ck_listiob(pTHX_ OP *o) |
79072805 LW |
7275 | { |
7276 | register OP *kid; | |
aeea060c | 7277 | |
7918f24d NC |
7278 | PERL_ARGS_ASSERT_CK_LISTIOB; |
7279 | ||
11343788 | 7280 | kid = cLISTOPo->op_first; |
79072805 | 7281 | if (!kid) { |
11343788 MB |
7282 | o = force_list(o); |
7283 | kid = cLISTOPo->op_first; | |
79072805 LW |
7284 | } |
7285 | if (kid->op_type == OP_PUSHMARK) | |
7286 | kid = kid->op_sibling; | |
11343788 | 7287 | if (kid && o->op_flags & OPf_STACKED) |
79072805 LW |
7288 | kid = kid->op_sibling; |
7289 | else if (kid && !kid->op_sibling) { /* print HANDLE; */ | |
7290 | if (kid->op_type == OP_CONST && kid->op_private & OPpCONST_BARE) { | |
11343788 | 7291 | o->op_flags |= OPf_STACKED; /* make it a filehandle */ |
748a9306 | 7292 | kid = newUNOP(OP_RV2GV, OPf_REF, scalar(kid)); |
11343788 MB |
7293 | cLISTOPo->op_first->op_sibling = kid; |
7294 | cLISTOPo->op_last = kid; | |
79072805 LW |
7295 | kid = kid->op_sibling; |
7296 | } | |
7297 | } | |
b2ffa427 | 7298 | |
79072805 | 7299 | if (!kid) |
54b9620d | 7300 | append_elem(o->op_type, o, newDEFSVOP()); |
79072805 | 7301 | |
2de3dbcc | 7302 | return listkids(o); |
bbce6d69 | 7303 | } |
7304 | ||
7305 | OP * | |
0d863452 RH |
7306 | Perl_ck_smartmatch(pTHX_ OP *o) |
7307 | { | |
97aff369 | 7308 | dVAR; |
0d863452 RH |
7309 | if (0 == (o->op_flags & OPf_SPECIAL)) { |
7310 | OP *first = cBINOPo->op_first; | |
7311 | OP *second = first->op_sibling; | |
7312 | ||
7313 | /* Implicitly take a reference to an array or hash */ | |
5f66b61c | 7314 | first->op_sibling = NULL; |
0d863452 RH |
7315 | first = cBINOPo->op_first = ref_array_or_hash(first); |
7316 | second = first->op_sibling = ref_array_or_hash(second); | |
7317 | ||
7318 | /* Implicitly take a reference to a regular expression */ | |
7319 | if (first->op_type == OP_MATCH) { | |
7320 | first->op_type = OP_QR; | |
7321 | first->op_ppaddr = PL_ppaddr[OP_QR]; | |
7322 | } | |
7323 | if (second->op_type == OP_MATCH) { | |
7324 | second->op_type = OP_QR; | |
7325 | second->op_ppaddr = PL_ppaddr[OP_QR]; | |
7326 | } | |
7327 | } | |
7328 | ||
7329 | return o; | |
7330 | } | |
7331 | ||
7332 | ||
7333 | OP * | |
b162f9ea IZ |
7334 | Perl_ck_sassign(pTHX_ OP *o) |
7335 | { | |
3088bf26 | 7336 | dVAR; |
1496a290 | 7337 | OP * const kid = cLISTOPo->op_first; |
7918f24d NC |
7338 | |
7339 | PERL_ARGS_ASSERT_CK_SASSIGN; | |
7340 | ||
b162f9ea IZ |
7341 | /* has a disposable target? */ |
7342 | if ((PL_opargs[kid->op_type] & OA_TARGLEX) | |
6b66af17 GS |
7343 | && !(kid->op_flags & OPf_STACKED) |
7344 | /* Cannot steal the second time! */ | |
1b438339 GG |
7345 | && !(kid->op_private & OPpTARGET_MY) |
7346 | /* Keep the full thing for madskills */ | |
7347 | && !PL_madskills | |
7348 | ) | |
b162f9ea | 7349 | { |
551405c4 | 7350 | OP * const kkid = kid->op_sibling; |
b162f9ea IZ |
7351 | |
7352 | /* Can just relocate the target. */ | |
2c2d71f5 JH |
7353 | if (kkid && kkid->op_type == OP_PADSV |
7354 | && !(kkid->op_private & OPpLVAL_INTRO)) | |
7355 | { | |
b162f9ea | 7356 | kid->op_targ = kkid->op_targ; |
743e66e6 | 7357 | kkid->op_targ = 0; |
b162f9ea IZ |
7358 | /* Now we do not need PADSV and SASSIGN. */ |
7359 | kid->op_sibling = o->op_sibling; /* NULL */ | |
7360 | cLISTOPo->op_first = NULL; | |
7361 | op_free(o); | |
7362 | op_free(kkid); | |
7363 | kid->op_private |= OPpTARGET_MY; /* Used for context settings */ | |
7364 | return kid; | |
7365 | } | |
7366 | } | |
c5917253 NC |
7367 | if (kid->op_sibling) { |
7368 | OP *kkid = kid->op_sibling; | |
7369 | if (kkid->op_type == OP_PADSV | |
7370 | && (kkid->op_private & OPpLVAL_INTRO) | |
7371 | && SvPAD_STATE(*av_fetch(PL_comppad_name, kkid->op_targ, FALSE))) { | |
7372 | const PADOFFSET target = kkid->op_targ; | |
7373 | OP *const other = newOP(OP_PADSV, | |
7374 | kkid->op_flags | |
7375 | | ((kkid->op_private & ~OPpLVAL_INTRO) << 8)); | |
7376 | OP *const first = newOP(OP_NULL, 0); | |
7377 | OP *const nullop = newCONDOP(0, first, o, other); | |
7378 | OP *const condop = first->op_next; | |
7379 | /* hijacking PADSTALE for uninitialized state variables */ | |
7380 | SvPADSTALE_on(PAD_SVl(target)); | |
7381 | ||
7382 | condop->op_type = OP_ONCE; | |
7383 | condop->op_ppaddr = PL_ppaddr[OP_ONCE]; | |
7384 | condop->op_targ = target; | |
7385 | other->op_targ = target; | |
7386 | ||
95562366 NC |
7387 | /* Because we change the type of the op here, we will skip the |
7388 | assinment binop->op_last = binop->op_first->op_sibling; at the | |
7389 | end of Perl_newBINOP(). So need to do it here. */ | |
7390 | cBINOPo->op_last = cBINOPo->op_first->op_sibling; | |
7391 | ||
c5917253 NC |
7392 | return nullop; |
7393 | } | |
7394 | } | |
b162f9ea IZ |
7395 | return o; |
7396 | } | |
7397 | ||
7398 | OP * | |
cea2e8a9 | 7399 | Perl_ck_match(pTHX_ OP *o) |
79072805 | 7400 | { |
97aff369 | 7401 | dVAR; |
7918f24d NC |
7402 | |
7403 | PERL_ARGS_ASSERT_CK_MATCH; | |
7404 | ||
0d863452 | 7405 | if (o->op_type != OP_QR && PL_compcv) { |
9f7d9405 | 7406 | const PADOFFSET offset = pad_findmy("$_"); |
00b1698f | 7407 | if (offset != NOT_IN_PAD && !(PAD_COMPNAME_FLAGS_isOUR(offset))) { |
59f00321 RGS |
7408 | o->op_targ = offset; |
7409 | o->op_private |= OPpTARGET_MY; | |
7410 | } | |
7411 | } | |
7412 | if (o->op_type == OP_MATCH || o->op_type == OP_QR) | |
7413 | o->op_private |= OPpRUNTIME; | |
11343788 | 7414 | return o; |
79072805 LW |
7415 | } |
7416 | ||
7417 | OP * | |
f5d5a27c CS |
7418 | Perl_ck_method(pTHX_ OP *o) |
7419 | { | |
551405c4 | 7420 | OP * const kid = cUNOPo->op_first; |
7918f24d NC |
7421 | |
7422 | PERL_ARGS_ASSERT_CK_METHOD; | |
7423 | ||
f5d5a27c CS |
7424 | if (kid->op_type == OP_CONST) { |
7425 | SV* sv = kSVOP->op_sv; | |
a4fc7abc AL |
7426 | const char * const method = SvPVX_const(sv); |
7427 | if (!(strchr(method, ':') || strchr(method, '\''))) { | |
f5d5a27c | 7428 | OP *cmop; |
1c846c1f | 7429 | if (!SvREADONLY(sv) || !SvFAKE(sv)) { |
a4fc7abc | 7430 | sv = newSVpvn_share(method, SvCUR(sv), 0); |
1c846c1f NIS |
7431 | } |
7432 | else { | |
a0714e2c | 7433 | kSVOP->op_sv = NULL; |
1c846c1f | 7434 | } |
f5d5a27c | 7435 | cmop = newSVOP(OP_METHOD_NAMED, 0, sv); |
eb8433b7 NC |
7436 | #ifdef PERL_MAD |
7437 | op_getmad(o,cmop,'O'); | |
7438 | #else | |
f5d5a27c | 7439 | op_free(o); |
eb8433b7 | 7440 | #endif |
f5d5a27c CS |
7441 | return cmop; |
7442 | } | |
7443 | } | |
7444 | return o; | |
7445 | } | |
7446 | ||
7447 | OP * | |
cea2e8a9 | 7448 | Perl_ck_null(pTHX_ OP *o) |
79072805 | 7449 | { |
7918f24d | 7450 | PERL_ARGS_ASSERT_CK_NULL; |
96a5add6 | 7451 | PERL_UNUSED_CONTEXT; |
11343788 | 7452 | return o; |
79072805 LW |
7453 | } |
7454 | ||
7455 | OP * | |
16fe6d59 GS |
7456 | Perl_ck_open(pTHX_ OP *o) |
7457 | { | |
97aff369 | 7458 | dVAR; |
551405c4 | 7459 | HV * const table = GvHV(PL_hintgv); |
7918f24d NC |
7460 | |
7461 | PERL_ARGS_ASSERT_CK_OPEN; | |
7462 | ||
16fe6d59 | 7463 | if (table) { |
a4fc7abc | 7464 | SV **svp = hv_fetchs(table, "open_IN", FALSE); |
16fe6d59 | 7465 | if (svp && *svp) { |
a79b25b7 VP |
7466 | STRLEN len = 0; |
7467 | const char *d = SvPV_const(*svp, len); | |
7468 | const I32 mode = mode_from_discipline(d, len); | |
16fe6d59 GS |
7469 | if (mode & O_BINARY) |
7470 | o->op_private |= OPpOPEN_IN_RAW; | |
7471 | else if (mode & O_TEXT) | |
7472 | o->op_private |= OPpOPEN_IN_CRLF; | |
7473 | } | |
7474 | ||
a4fc7abc | 7475 | svp = hv_fetchs(table, "open_OUT", FALSE); |
16fe6d59 | 7476 | if (svp && *svp) { |
a79b25b7 VP |
7477 | STRLEN len = 0; |
7478 | const char *d = SvPV_const(*svp, len); | |
7479 | const I32 mode = mode_from_discipline(d, len); | |
16fe6d59 GS |
7480 | if (mode & O_BINARY) |
7481 | o->op_private |= OPpOPEN_OUT_RAW; | |
7482 | else if (mode & O_TEXT) | |
7483 | o->op_private |= OPpOPEN_OUT_CRLF; | |
7484 | } | |
7485 | } | |
8d7403e6 RGS |
7486 | if (o->op_type == OP_BACKTICK) { |
7487 | if (!(o->op_flags & OPf_KIDS)) { | |
e4b7ebf3 RGS |
7488 | OP * const newop = newUNOP(OP_BACKTICK, 0, newDEFSVOP()); |
7489 | #ifdef PERL_MAD | |
7490 | op_getmad(o,newop,'O'); | |
7491 | #else | |
8d7403e6 | 7492 | op_free(o); |
e4b7ebf3 RGS |
7493 | #endif |
7494 | return newop; | |
8d7403e6 | 7495 | } |
16fe6d59 | 7496 | return o; |
8d7403e6 | 7497 | } |
3b82e551 JH |
7498 | { |
7499 | /* In case of three-arg dup open remove strictness | |
7500 | * from the last arg if it is a bareword. */ | |
551405c4 AL |
7501 | OP * const first = cLISTOPx(o)->op_first; /* The pushmark. */ |
7502 | OP * const last = cLISTOPx(o)->op_last; /* The bareword. */ | |
3b82e551 | 7503 | OP *oa; |
b15aece3 | 7504 | const char *mode; |
3b82e551 JH |
7505 | |
7506 | if ((last->op_type == OP_CONST) && /* The bareword. */ | |
7507 | (last->op_private & OPpCONST_BARE) && | |
7508 | (last->op_private & OPpCONST_STRICT) && | |
7509 | (oa = first->op_sibling) && /* The fh. */ | |
7510 | (oa = oa->op_sibling) && /* The mode. */ | |
ea1d064a | 7511 | (oa->op_type == OP_CONST) && |
3b82e551 | 7512 | SvPOK(((SVOP*)oa)->op_sv) && |
b15aece3 | 7513 | (mode = SvPVX_const(((SVOP*)oa)->op_sv)) && |
3b82e551 JH |
7514 | mode[0] == '>' && mode[1] == '&' && /* A dup open. */ |
7515 | (last == oa->op_sibling)) /* The bareword. */ | |
7516 | last->op_private &= ~OPpCONST_STRICT; | |
7517 | } | |
16fe6d59 GS |
7518 | return ck_fun(o); |
7519 | } | |
7520 | ||
7521 | OP * | |
cea2e8a9 | 7522 | Perl_ck_repeat(pTHX_ OP *o) |
79072805 | 7523 | { |
7918f24d NC |
7524 | PERL_ARGS_ASSERT_CK_REPEAT; |
7525 | ||
11343788 MB |
7526 | if (cBINOPo->op_first->op_flags & OPf_PARENS) { |
7527 | o->op_private |= OPpREPEAT_DOLIST; | |
7528 | cBINOPo->op_first = force_list(cBINOPo->op_first); | |
79072805 LW |
7529 | } |
7530 | else | |
11343788 MB |
7531 | scalar(o); |
7532 | return o; | |
79072805 LW |
7533 | } |
7534 | ||
7535 | OP * | |
cea2e8a9 | 7536 | Perl_ck_require(pTHX_ OP *o) |
8990e307 | 7537 | { |
97aff369 | 7538 | dVAR; |
a0714e2c | 7539 | GV* gv = NULL; |
ec4ab249 | 7540 | |
7918f24d NC |
7541 | PERL_ARGS_ASSERT_CK_REQUIRE; |
7542 | ||
11343788 | 7543 | if (o->op_flags & OPf_KIDS) { /* Shall we supply missing .pm? */ |
551405c4 | 7544 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
8990e307 LW |
7545 | |
7546 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
551405c4 | 7547 | SV * const sv = kid->op_sv; |
5c144d81 | 7548 | U32 was_readonly = SvREADONLY(sv); |
8990e307 | 7549 | char *s; |
cfff9797 NC |
7550 | STRLEN len; |
7551 | const char *end; | |
5c144d81 NC |
7552 | |
7553 | if (was_readonly) { | |
7554 | if (SvFAKE(sv)) { | |
7555 | sv_force_normal_flags(sv, 0); | |
7556 | assert(!SvREADONLY(sv)); | |
7557 | was_readonly = 0; | |
7558 | } else { | |
7559 | SvREADONLY_off(sv); | |
7560 | } | |
7561 | } | |
7562 | ||
cfff9797 NC |
7563 | s = SvPVX(sv); |
7564 | len = SvCUR(sv); | |
7565 | end = s + len; | |
7566 | for (; s < end; s++) { | |
a0d0e21e LW |
7567 | if (*s == ':' && s[1] == ':') { |
7568 | *s = '/'; | |
5c6b2528 | 7569 | Move(s+2, s+1, end - s - 1, char); |
cfff9797 | 7570 | --end; |
a0d0e21e | 7571 | } |
8990e307 | 7572 | } |
cfff9797 | 7573 | SvEND_set(sv, end); |
396482e1 | 7574 | sv_catpvs(sv, ".pm"); |
5c144d81 | 7575 | SvFLAGS(sv) |= was_readonly; |
8990e307 LW |
7576 | } |
7577 | } | |
ec4ab249 | 7578 | |
a72a1c8b RGS |
7579 | if (!(o->op_flags & OPf_SPECIAL)) { /* Wasn't written as CORE::require */ |
7580 | /* handle override, if any */ | |
fafc274c | 7581 | gv = gv_fetchpvs("require", GV_NOTQUAL, SVt_PVCV); |
d6a985f2 | 7582 | if (!(gv && GvCVu(gv) && GvIMPORTED_CV(gv))) { |
a4fc7abc | 7583 | GV * const * const gvp = (GV**)hv_fetchs(PL_globalstash, "require", FALSE); |
a0714e2c | 7584 | gv = gvp ? *gvp : NULL; |
d6a985f2 | 7585 | } |
a72a1c8b | 7586 | } |
ec4ab249 | 7587 | |
b9f751c0 | 7588 | if (gv && GvCVu(gv) && GvIMPORTED_CV(gv)) { |
551405c4 | 7589 | OP * const kid = cUNOPo->op_first; |
f11453cb NC |
7590 | OP * newop; |
7591 | ||
ec4ab249 | 7592 | cUNOPo->op_first = 0; |
f11453cb | 7593 | #ifndef PERL_MAD |
ec4ab249 | 7594 | op_free(o); |
eb8433b7 | 7595 | #endif |
f11453cb NC |
7596 | newop = ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, |
7597 | append_elem(OP_LIST, kid, | |
7598 | scalar(newUNOP(OP_RV2CV, 0, | |
7599 | newGVOP(OP_GV, 0, | |
7600 | gv)))))); | |
7601 | op_getmad(o,newop,'O'); | |
eb8433b7 | 7602 | return newop; |
ec4ab249 GA |
7603 | } |
7604 | ||
11343788 | 7605 | return ck_fun(o); |
8990e307 LW |
7606 | } |
7607 | ||
78f9721b SM |
7608 | OP * |
7609 | Perl_ck_return(pTHX_ OP *o) | |
7610 | { | |
97aff369 | 7611 | dVAR; |
e91684bf | 7612 | OP *kid; |
7918f24d NC |
7613 | |
7614 | PERL_ARGS_ASSERT_CK_RETURN; | |
7615 | ||
e91684bf | 7616 | kid = cLISTOPo->op_first->op_sibling; |
78f9721b | 7617 | if (CvLVALUE(PL_compcv)) { |
e91684bf | 7618 | for (; kid; kid = kid->op_sibling) |
78f9721b | 7619 | mod(kid, OP_LEAVESUBLV); |
e91684bf VP |
7620 | } else { |
7621 | for (; kid; kid = kid->op_sibling) | |
7622 | if ((kid->op_type == OP_NULL) | |
1c8a4223 | 7623 | && ((kid->op_flags & (OPf_SPECIAL|OPf_KIDS)) == (OPf_SPECIAL|OPf_KIDS))) { |
e91684bf | 7624 | /* This is a do block */ |
1c8a4223 VP |
7625 | OP *op = kUNOP->op_first; |
7626 | if (op->op_type == OP_LEAVE && op->op_flags & OPf_KIDS) { | |
7627 | op = cUNOPx(op)->op_first; | |
7628 | assert(op->op_type == OP_ENTER && !(op->op_flags & OPf_SPECIAL)); | |
7629 | /* Force the use of the caller's context */ | |
7630 | op->op_flags |= OPf_SPECIAL; | |
7631 | } | |
e91684bf | 7632 | } |
78f9721b | 7633 | } |
e91684bf | 7634 | |
78f9721b SM |
7635 | return o; |
7636 | } | |
7637 | ||
79072805 | 7638 | OP * |
cea2e8a9 | 7639 | Perl_ck_select(pTHX_ OP *o) |
79072805 | 7640 | { |
27da23d5 | 7641 | dVAR; |
c07a80fd | 7642 | OP* kid; |
7918f24d NC |
7643 | |
7644 | PERL_ARGS_ASSERT_CK_SELECT; | |
7645 | ||
11343788 MB |
7646 | if (o->op_flags & OPf_KIDS) { |
7647 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
2304df62 | 7648 | if (kid && kid->op_sibling) { |
11343788 | 7649 | o->op_type = OP_SSELECT; |
22c35a8c | 7650 | o->op_ppaddr = PL_ppaddr[OP_SSELECT]; |
11343788 MB |
7651 | o = ck_fun(o); |
7652 | return fold_constants(o); | |
79072805 LW |
7653 | } |
7654 | } | |
11343788 MB |
7655 | o = ck_fun(o); |
7656 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
c07a80fd | 7657 | if (kid && kid->op_type == OP_RV2GV) |
7658 | kid->op_private &= ~HINT_STRICT_REFS; | |
11343788 | 7659 | return o; |
79072805 LW |
7660 | } |
7661 | ||
7662 | OP * | |
cea2e8a9 | 7663 | Perl_ck_shift(pTHX_ OP *o) |
79072805 | 7664 | { |
97aff369 | 7665 | dVAR; |
6867be6d | 7666 | const I32 type = o->op_type; |
79072805 | 7667 | |
7918f24d NC |
7668 | PERL_ARGS_ASSERT_CK_SHIFT; |
7669 | ||
11343788 | 7670 | if (!(o->op_flags & OPf_KIDS)) { |
821005df | 7671 | OP *argop = newUNOP(OP_RV2AV, 0, |
8fde6460 | 7672 | scalar(newGVOP(OP_GV, 0, CvUNIQUE(PL_compcv) ? PL_argvgv : PL_defgv))); |
eb8433b7 | 7673 | #ifdef PERL_MAD |
821005df | 7674 | OP * const oldo = o; |
eb8433b7 NC |
7675 | o = newUNOP(type, 0, scalar(argop)); |
7676 | op_getmad(oldo,o,'O'); | |
7677 | return o; | |
7678 | #else | |
821005df | 7679 | op_free(o); |
6d4ff0d2 | 7680 | return newUNOP(type, 0, scalar(argop)); |
eb8433b7 | 7681 | #endif |
79072805 | 7682 | } |
11343788 | 7683 | return scalar(modkids(ck_fun(o), type)); |
79072805 LW |
7684 | } |
7685 | ||
7686 | OP * | |
cea2e8a9 | 7687 | Perl_ck_sort(pTHX_ OP *o) |
79072805 | 7688 | { |
97aff369 | 7689 | dVAR; |
8e3f9bdf | 7690 | OP *firstkid; |
bbce6d69 | 7691 | |
7918f24d NC |
7692 | PERL_ARGS_ASSERT_CK_SORT; |
7693 | ||
1496a290 | 7694 | if (o->op_type == OP_SORT && (PL_hints & HINT_LOCALIZE_HH) != 0) { |
a4fc7abc | 7695 | HV * const hinthv = GvHV(PL_hintgv); |
7b9ef140 | 7696 | if (hinthv) { |
a4fc7abc | 7697 | SV ** const svp = hv_fetchs(hinthv, "sort", FALSE); |
7b9ef140 | 7698 | if (svp) { |
a4fc7abc | 7699 | const I32 sorthints = (I32)SvIV(*svp); |
7b9ef140 RH |
7700 | if ((sorthints & HINT_SORT_QUICKSORT) != 0) |
7701 | o->op_private |= OPpSORT_QSORT; | |
7702 | if ((sorthints & HINT_SORT_STABLE) != 0) | |
7703 | o->op_private |= OPpSORT_STABLE; | |
7704 | } | |
7705 | } | |
7706 | } | |
7707 | ||
9ea6e965 | 7708 | if (o->op_type == OP_SORT && o->op_flags & OPf_STACKED) |
51a19bc0 | 7709 | simplify_sort(o); |
8e3f9bdf GS |
7710 | firstkid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
7711 | if (o->op_flags & OPf_STACKED) { /* may have been cleared */ | |
9c5ffd7c | 7712 | OP *k = NULL; |
8e3f9bdf | 7713 | OP *kid = cUNOPx(firstkid)->op_first; /* get past null */ |
79072805 | 7714 | |
463ee0b2 | 7715 | if (kid->op_type == OP_SCOPE || kid->op_type == OP_LEAVE) { |
79072805 | 7716 | linklist(kid); |
463ee0b2 LW |
7717 | if (kid->op_type == OP_SCOPE) { |
7718 | k = kid->op_next; | |
7719 | kid->op_next = 0; | |
79072805 | 7720 | } |
463ee0b2 | 7721 | else if (kid->op_type == OP_LEAVE) { |
11343788 | 7722 | if (o->op_type == OP_SORT) { |
93c66552 | 7723 | op_null(kid); /* wipe out leave */ |
748a9306 | 7724 | kid->op_next = kid; |
463ee0b2 | 7725 | |
748a9306 LW |
7726 | for (k = kLISTOP->op_first->op_next; k; k = k->op_next) { |
7727 | if (k->op_next == kid) | |
7728 | k->op_next = 0; | |
71a29c3c GS |
7729 | /* don't descend into loops */ |
7730 | else if (k->op_type == OP_ENTERLOOP | |
7731 | || k->op_type == OP_ENTERITER) | |
7732 | { | |
7733 | k = cLOOPx(k)->op_lastop; | |
7734 | } | |
748a9306 | 7735 | } |
463ee0b2 | 7736 | } |
748a9306 LW |
7737 | else |
7738 | kid->op_next = 0; /* just disconnect the leave */ | |
a0d0e21e | 7739 | k = kLISTOP->op_first; |
463ee0b2 | 7740 | } |
a2efc822 | 7741 | CALL_PEEP(k); |
a0d0e21e | 7742 | |
8e3f9bdf GS |
7743 | kid = firstkid; |
7744 | if (o->op_type == OP_SORT) { | |
7745 | /* provide scalar context for comparison function/block */ | |
7746 | kid = scalar(kid); | |
a0d0e21e | 7747 | kid->op_next = kid; |
8e3f9bdf | 7748 | } |
a0d0e21e LW |
7749 | else |
7750 | kid->op_next = k; | |
11343788 | 7751 | o->op_flags |= OPf_SPECIAL; |
79072805 | 7752 | } |
c6e96bcb | 7753 | else if (kid->op_type == OP_RV2SV || kid->op_type == OP_PADSV) |
93c66552 | 7754 | op_null(firstkid); |
8e3f9bdf GS |
7755 | |
7756 | firstkid = firstkid->op_sibling; | |
79072805 | 7757 | } |
bbce6d69 | 7758 | |
8e3f9bdf GS |
7759 | /* provide list context for arguments */ |
7760 | if (o->op_type == OP_SORT) | |
7761 | list(firstkid); | |
7762 | ||
11343788 | 7763 | return o; |
79072805 | 7764 | } |
bda4119b GS |
7765 | |
7766 | STATIC void | |
cea2e8a9 | 7767 | S_simplify_sort(pTHX_ OP *o) |
9c007264 | 7768 | { |
97aff369 | 7769 | dVAR; |
9c007264 JH |
7770 | register OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
7771 | OP *k; | |
eb209983 | 7772 | int descending; |
350de78d | 7773 | GV *gv; |
770526c1 | 7774 | const char *gvname; |
7918f24d NC |
7775 | |
7776 | PERL_ARGS_ASSERT_SIMPLIFY_SORT; | |
7777 | ||
9c007264 JH |
7778 | if (!(o->op_flags & OPf_STACKED)) |
7779 | return; | |
fafc274c NC |
7780 | GvMULTI_on(gv_fetchpvs("a", GV_ADD|GV_NOTQUAL, SVt_PV)); |
7781 | GvMULTI_on(gv_fetchpvs("b", GV_ADD|GV_NOTQUAL, SVt_PV)); | |
82092f1d | 7782 | kid = kUNOP->op_first; /* get past null */ |
9c007264 JH |
7783 | if (kid->op_type != OP_SCOPE) |
7784 | return; | |
7785 | kid = kLISTOP->op_last; /* get past scope */ | |
7786 | switch(kid->op_type) { | |
7787 | case OP_NCMP: | |
7788 | case OP_I_NCMP: | |
7789 | case OP_SCMP: | |
7790 | break; | |
7791 | default: | |
7792 | return; | |
7793 | } | |
7794 | k = kid; /* remember this node*/ | |
7795 | if (kBINOP->op_first->op_type != OP_RV2SV) | |
7796 | return; | |
7797 | kid = kBINOP->op_first; /* get past cmp */ | |
7798 | if (kUNOP->op_first->op_type != OP_GV) | |
7799 | return; | |
7800 | kid = kUNOP->op_first; /* get past rv2sv */ | |
638eceb6 | 7801 | gv = kGVOP_gv; |
350de78d | 7802 | if (GvSTASH(gv) != PL_curstash) |
9c007264 | 7803 | return; |
770526c1 NC |
7804 | gvname = GvNAME(gv); |
7805 | if (*gvname == 'a' && gvname[1] == '\0') | |
eb209983 | 7806 | descending = 0; |
770526c1 | 7807 | else if (*gvname == 'b' && gvname[1] == '\0') |
eb209983 | 7808 | descending = 1; |
9c007264 JH |
7809 | else |
7810 | return; | |
eb209983 | 7811 | |
9c007264 JH |
7812 | kid = k; /* back to cmp */ |
7813 | if (kBINOP->op_last->op_type != OP_RV2SV) | |
7814 | return; | |
7815 | kid = kBINOP->op_last; /* down to 2nd arg */ | |
7816 | if (kUNOP->op_first->op_type != OP_GV) | |
7817 | return; | |
7818 | kid = kUNOP->op_first; /* get past rv2sv */ | |
638eceb6 | 7819 | gv = kGVOP_gv; |
770526c1 NC |
7820 | if (GvSTASH(gv) != PL_curstash) |
7821 | return; | |
7822 | gvname = GvNAME(gv); | |
7823 | if ( descending | |
7824 | ? !(*gvname == 'a' && gvname[1] == '\0') | |
7825 | : !(*gvname == 'b' && gvname[1] == '\0')) | |
9c007264 JH |
7826 | return; |
7827 | o->op_flags &= ~(OPf_STACKED | OPf_SPECIAL); | |
eb209983 NC |
7828 | if (descending) |
7829 | o->op_private |= OPpSORT_DESCEND; | |
9c007264 JH |
7830 | if (k->op_type == OP_NCMP) |
7831 | o->op_private |= OPpSORT_NUMERIC; | |
7832 | if (k->op_type == OP_I_NCMP) | |
7833 | o->op_private |= OPpSORT_NUMERIC | OPpSORT_INTEGER; | |
e507f050 SM |
7834 | kid = cLISTOPo->op_first->op_sibling; |
7835 | cLISTOPo->op_first->op_sibling = kid->op_sibling; /* bypass old block */ | |
eb8433b7 NC |
7836 | #ifdef PERL_MAD |
7837 | op_getmad(kid,o,'S'); /* then delete it */ | |
7838 | #else | |
e507f050 | 7839 | op_free(kid); /* then delete it */ |
eb8433b7 | 7840 | #endif |
9c007264 | 7841 | } |
79072805 LW |
7842 | |
7843 | OP * | |
cea2e8a9 | 7844 | Perl_ck_split(pTHX_ OP *o) |
79072805 | 7845 | { |
27da23d5 | 7846 | dVAR; |
79072805 | 7847 | register OP *kid; |
aeea060c | 7848 | |
7918f24d NC |
7849 | PERL_ARGS_ASSERT_CK_SPLIT; |
7850 | ||
11343788 MB |
7851 | if (o->op_flags & OPf_STACKED) |
7852 | return no_fh_allowed(o); | |
79072805 | 7853 | |
11343788 | 7854 | kid = cLISTOPo->op_first; |
8990e307 | 7855 | if (kid->op_type != OP_NULL) |
cea2e8a9 | 7856 | Perl_croak(aTHX_ "panic: ck_split"); |
8990e307 | 7857 | kid = kid->op_sibling; |
11343788 MB |
7858 | op_free(cLISTOPo->op_first); |
7859 | cLISTOPo->op_first = kid; | |
85e6fe83 | 7860 | if (!kid) { |
396482e1 | 7861 | cLISTOPo->op_first = kid = newSVOP(OP_CONST, 0, newSVpvs(" ")); |
11343788 | 7862 | cLISTOPo->op_last = kid; /* There was only one element previously */ |
85e6fe83 | 7863 | } |
79072805 | 7864 | |
de4bf5b3 | 7865 | if (kid->op_type != OP_MATCH || kid->op_flags & OPf_STACKED) { |
551405c4 | 7866 | OP * const sibl = kid->op_sibling; |
463ee0b2 | 7867 | kid->op_sibling = 0; |
131b3ad0 | 7868 | kid = pmruntime( newPMOP(OP_MATCH, OPf_SPECIAL), kid, 0); |
11343788 MB |
7869 | if (cLISTOPo->op_first == cLISTOPo->op_last) |
7870 | cLISTOPo->op_last = kid; | |
7871 | cLISTOPo->op_first = kid; | |
79072805 LW |
7872 | kid->op_sibling = sibl; |
7873 | } | |
7874 | ||
7875 | kid->op_type = OP_PUSHRE; | |
22c35a8c | 7876 | kid->op_ppaddr = PL_ppaddr[OP_PUSHRE]; |
79072805 | 7877 | scalar(kid); |
041457d9 | 7878 | if (((PMOP *)kid)->op_pmflags & PMf_GLOBAL && ckWARN(WARN_REGEXP)) { |
f34840d8 MJD |
7879 | Perl_warner(aTHX_ packWARN(WARN_REGEXP), |
7880 | "Use of /g modifier is meaningless in split"); | |
7881 | } | |
79072805 LW |
7882 | |
7883 | if (!kid->op_sibling) | |
54b9620d | 7884 | append_elem(OP_SPLIT, o, newDEFSVOP()); |
79072805 LW |
7885 | |
7886 | kid = kid->op_sibling; | |
7887 | scalar(kid); | |
7888 | ||
7889 | if (!kid->op_sibling) | |
11343788 | 7890 | append_elem(OP_SPLIT, o, newSVOP(OP_CONST, 0, newSViv(0))); |
ce3e5c45 | 7891 | assert(kid->op_sibling); |
79072805 LW |
7892 | |
7893 | kid = kid->op_sibling; | |
7894 | scalar(kid); | |
7895 | ||
7896 | if (kid->op_sibling) | |
53e06cf0 | 7897 | return too_many_arguments(o,OP_DESC(o)); |
79072805 | 7898 | |
11343788 | 7899 | return o; |
79072805 LW |
7900 | } |
7901 | ||
7902 | OP * | |
1c846c1f | 7903 | Perl_ck_join(pTHX_ OP *o) |
eb6e2d6f | 7904 | { |
551405c4 | 7905 | const OP * const kid = cLISTOPo->op_first->op_sibling; |
7918f24d NC |
7906 | |
7907 | PERL_ARGS_ASSERT_CK_JOIN; | |
7908 | ||
041457d9 DM |
7909 | if (kid && kid->op_type == OP_MATCH) { |
7910 | if (ckWARN(WARN_SYNTAX)) { | |
6867be6d | 7911 | const REGEXP *re = PM_GETRE(kPMOP); |
d2c6dc5e | 7912 | const char *pmstr = re ? RX_PRECOMP_const(re) : "STRING"; |
220fc49f | 7913 | const STRLEN len = re ? RX_PRELEN(re) : 6; |
9014280d | 7914 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
bcdf7404 | 7915 | "/%.*s/ should probably be written as \"%.*s\"", |
d83b45b8 | 7916 | (int)len, pmstr, (int)len, pmstr); |
eb6e2d6f GS |
7917 | } |
7918 | } | |
7919 | return ck_fun(o); | |
7920 | } | |
7921 | ||
7922 | OP * | |
cea2e8a9 | 7923 | Perl_ck_subr(pTHX_ OP *o) |
79072805 | 7924 | { |
97aff369 | 7925 | dVAR; |
11343788 MB |
7926 | OP *prev = ((cUNOPo->op_first->op_sibling) |
7927 | ? cUNOPo : ((UNOP*)cUNOPo->op_first))->op_first; | |
7928 | OP *o2 = prev->op_sibling; | |
4633a7c4 | 7929 | OP *cvop; |
a0751766 | 7930 | const char *proto = NULL; |
cbf82dd0 | 7931 | const char *proto_end = NULL; |
c445ea15 AL |
7932 | CV *cv = NULL; |
7933 | GV *namegv = NULL; | |
4633a7c4 LW |
7934 | int optional = 0; |
7935 | I32 arg = 0; | |
5b794e05 | 7936 | I32 contextclass = 0; |
d3fcec1f | 7937 | const char *e = NULL; |
0723351e | 7938 | bool delete_op = 0; |
4633a7c4 | 7939 | |
7918f24d NC |
7940 | PERL_ARGS_ASSERT_CK_SUBR; |
7941 | ||
d3011074 | 7942 | o->op_private |= OPpENTERSUB_HASTARG; |
11343788 | 7943 | for (cvop = o2; cvop->op_sibling; cvop = cvop->op_sibling) ; |
4633a7c4 LW |
7944 | if (cvop->op_type == OP_RV2CV) { |
7945 | SVOP* tmpop; | |
11343788 | 7946 | o->op_private |= (cvop->op_private & OPpENTERSUB_AMPER); |
93c66552 | 7947 | op_null(cvop); /* disable rv2cv */ |
4633a7c4 | 7948 | tmpop = (SVOP*)((UNOP*)cvop)->op_first; |
76cd736e | 7949 | if (tmpop->op_type == OP_GV && !(o->op_private & OPpENTERSUB_AMPER)) { |
638eceb6 | 7950 | GV *gv = cGVOPx_gv(tmpop); |
350de78d | 7951 | cv = GvCVu(gv); |
76cd736e GS |
7952 | if (!cv) |
7953 | tmpop->op_private |= OPpEARLY_CV; | |
06492da6 SF |
7954 | else { |
7955 | if (SvPOK(cv)) { | |
cbf82dd0 | 7956 | STRLEN len; |
06492da6 | 7957 | namegv = CvANON(cv) ? gv : CvGV(cv); |
ad64d0ec | 7958 | proto = SvPV(MUTABLE_SV(cv), len); |
cbf82dd0 | 7959 | proto_end = proto + len; |
06492da6 | 7960 | } |
46fc3d4c | 7961 | } |
4633a7c4 LW |
7962 | } |
7963 | } | |
f5d5a27c | 7964 | else if (cvop->op_type == OP_METHOD || cvop->op_type == OP_METHOD_NAMED) { |
7a52d87a GS |
7965 | if (o2->op_type == OP_CONST) |
7966 | o2->op_private &= ~OPpCONST_STRICT; | |
58a40671 | 7967 | else if (o2->op_type == OP_LIST) { |
5f66b61c AL |
7968 | OP * const sib = ((UNOP*)o2)->op_first->op_sibling; |
7969 | if (sib && sib->op_type == OP_CONST) | |
7970 | sib->op_private &= ~OPpCONST_STRICT; | |
58a40671 | 7971 | } |
7a52d87a | 7972 | } |
3280af22 NIS |
7973 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
7974 | if (PERLDB_SUB && PL_curstash != PL_debstash) | |
11343788 MB |
7975 | o->op_private |= OPpENTERSUB_DB; |
7976 | while (o2 != cvop) { | |
eb8433b7 | 7977 | OP* o3; |
9fc012f4 GG |
7978 | if (PL_madskills && o2->op_type == OP_STUB) { |
7979 | o2 = o2->op_sibling; | |
7980 | continue; | |
7981 | } | |
eb8433b7 NC |
7982 | if (PL_madskills && o2->op_type == OP_NULL) |
7983 | o3 = ((UNOP*)o2)->op_first; | |
7984 | else | |
7985 | o3 = o2; | |
4633a7c4 | 7986 | if (proto) { |
cbf82dd0 | 7987 | if (proto >= proto_end) |
5dc0d613 | 7988 | return too_many_arguments(o, gv_ename(namegv)); |
cbf82dd0 NC |
7989 | |
7990 | switch (*proto) { | |
4633a7c4 LW |
7991 | case ';': |
7992 | optional = 1; | |
7993 | proto++; | |
7994 | continue; | |
b13fd70a | 7995 | case '_': |
f00d1d61 | 7996 | /* _ must be at the end */ |
cb40c25d | 7997 | if (proto[1] && proto[1] != ';') |
f00d1d61 | 7998 | goto oops; |
4633a7c4 LW |
7999 | case '$': |
8000 | proto++; | |
8001 | arg++; | |
11343788 | 8002 | scalar(o2); |
4633a7c4 LW |
8003 | break; |
8004 | case '%': | |
8005 | case '@': | |
11343788 | 8006 | list(o2); |
4633a7c4 LW |
8007 | arg++; |
8008 | break; | |
8009 | case '&': | |
8010 | proto++; | |
8011 | arg++; | |
eb8433b7 | 8012 | if (o3->op_type != OP_REFGEN && o3->op_type != OP_UNDEF) |
75fc29ea | 8013 | bad_type(arg, |
666ea192 JH |
8014 | arg == 1 ? "block or sub {}" : "sub {}", |
8015 | gv_ename(namegv), o3); | |
4633a7c4 LW |
8016 | break; |
8017 | case '*': | |
2ba6ecf4 | 8018 | /* '*' allows any scalar type, including bareword */ |
4633a7c4 LW |
8019 | proto++; |
8020 | arg++; | |
eb8433b7 | 8021 | if (o3->op_type == OP_RV2GV) |
2ba6ecf4 | 8022 | goto wrapref; /* autoconvert GLOB -> GLOBref */ |
eb8433b7 NC |
8023 | else if (o3->op_type == OP_CONST) |
8024 | o3->op_private &= ~OPpCONST_STRICT; | |
8025 | else if (o3->op_type == OP_ENTERSUB) { | |
9675f7ac | 8026 | /* accidental subroutine, revert to bareword */ |
eb8433b7 | 8027 | OP *gvop = ((UNOP*)o3)->op_first; |
9675f7ac GS |
8028 | if (gvop && gvop->op_type == OP_NULL) { |
8029 | gvop = ((UNOP*)gvop)->op_first; | |
8030 | if (gvop) { | |
8031 | for (; gvop->op_sibling; gvop = gvop->op_sibling) | |
8032 | ; | |
8033 | if (gvop && | |
8034 | (gvop->op_private & OPpENTERSUB_NOPAREN) && | |
8035 | (gvop = ((UNOP*)gvop)->op_first) && | |
8036 | gvop->op_type == OP_GV) | |
8037 | { | |
551405c4 AL |
8038 | GV * const gv = cGVOPx_gv(gvop); |
8039 | OP * const sibling = o2->op_sibling; | |
396482e1 | 8040 | SV * const n = newSVpvs(""); |
eb8433b7 | 8041 | #ifdef PERL_MAD |
1d866c12 | 8042 | OP * const oldo2 = o2; |
eb8433b7 | 8043 | #else |
9675f7ac | 8044 | op_free(o2); |
eb8433b7 | 8045 | #endif |
2a797ae2 | 8046 | gv_fullname4(n, gv, "", FALSE); |
2692f720 | 8047 | o2 = newSVOP(OP_CONST, 0, n); |
eb8433b7 | 8048 | op_getmad(oldo2,o2,'O'); |
9675f7ac GS |
8049 | prev->op_sibling = o2; |
8050 | o2->op_sibling = sibling; | |
8051 | } | |
8052 | } | |
8053 | } | |
8054 | } | |
2ba6ecf4 GS |
8055 | scalar(o2); |
8056 | break; | |
5b794e05 JH |
8057 | case '[': case ']': |
8058 | goto oops; | |
8059 | break; | |
4633a7c4 LW |
8060 | case '\\': |
8061 | proto++; | |
8062 | arg++; | |
5b794e05 | 8063 | again: |
4633a7c4 | 8064 | switch (*proto++) { |
5b794e05 JH |
8065 | case '[': |
8066 | if (contextclass++ == 0) { | |
841d93c8 | 8067 | e = strchr(proto, ']'); |
5b794e05 JH |
8068 | if (!e || e == proto) |
8069 | goto oops; | |
8070 | } | |
8071 | else | |
8072 | goto oops; | |
8073 | goto again; | |
8074 | break; | |
8075 | case ']': | |
466bafcd | 8076 | if (contextclass) { |
a0751766 NC |
8077 | const char *p = proto; |
8078 | const char *const end = proto; | |
466bafcd | 8079 | contextclass = 0; |
47127b64 | 8080 | while (*--p != '[') {} |
a0751766 NC |
8081 | bad_type(arg, Perl_form(aTHX_ "one of %.*s", |
8082 | (int)(end - p), p), | |
8083 | gv_ename(namegv), o3); | |
466bafcd | 8084 | } else |
5b794e05 JH |
8085 | goto oops; |
8086 | break; | |
4633a7c4 | 8087 | case '*': |
eb8433b7 | 8088 | if (o3->op_type == OP_RV2GV) |
5b794e05 JH |
8089 | goto wrapref; |
8090 | if (!contextclass) | |
eb8433b7 | 8091 | bad_type(arg, "symbol", gv_ename(namegv), o3); |
5b794e05 | 8092 | break; |
4633a7c4 | 8093 | case '&': |
eb8433b7 | 8094 | if (o3->op_type == OP_ENTERSUB) |
5b794e05 JH |
8095 | goto wrapref; |
8096 | if (!contextclass) | |
eb8433b7 NC |
8097 | bad_type(arg, "subroutine entry", gv_ename(namegv), |
8098 | o3); | |
5b794e05 | 8099 | break; |
4633a7c4 | 8100 | case '$': |
eb8433b7 NC |
8101 | if (o3->op_type == OP_RV2SV || |
8102 | o3->op_type == OP_PADSV || | |
8103 | o3->op_type == OP_HELEM || | |
5b9081af | 8104 | o3->op_type == OP_AELEM) |
5b794e05 JH |
8105 | goto wrapref; |
8106 | if (!contextclass) | |
eb8433b7 | 8107 | bad_type(arg, "scalar", gv_ename(namegv), o3); |
5b794e05 | 8108 | break; |
4633a7c4 | 8109 | case '@': |
eb8433b7 NC |
8110 | if (o3->op_type == OP_RV2AV || |
8111 | o3->op_type == OP_PADAV) | |
5b794e05 JH |
8112 | goto wrapref; |
8113 | if (!contextclass) | |
eb8433b7 | 8114 | bad_type(arg, "array", gv_ename(namegv), o3); |
5b794e05 | 8115 | break; |
4633a7c4 | 8116 | case '%': |
eb8433b7 NC |
8117 | if (o3->op_type == OP_RV2HV || |
8118 | o3->op_type == OP_PADHV) | |
5b794e05 JH |
8119 | goto wrapref; |
8120 | if (!contextclass) | |
eb8433b7 | 8121 | bad_type(arg, "hash", gv_ename(namegv), o3); |
5b794e05 JH |
8122 | break; |
8123 | wrapref: | |
4633a7c4 | 8124 | { |
551405c4 AL |
8125 | OP* const kid = o2; |
8126 | OP* const sib = kid->op_sibling; | |
4633a7c4 | 8127 | kid->op_sibling = 0; |
6fa846a0 GS |
8128 | o2 = newUNOP(OP_REFGEN, 0, kid); |
8129 | o2->op_sibling = sib; | |
e858de61 | 8130 | prev->op_sibling = o2; |
4633a7c4 | 8131 | } |
841d93c8 | 8132 | if (contextclass && e) { |
5b794e05 JH |
8133 | proto = e + 1; |
8134 | contextclass = 0; | |
8135 | } | |
4633a7c4 LW |
8136 | break; |
8137 | default: goto oops; | |
8138 | } | |
5b794e05 JH |
8139 | if (contextclass) |
8140 | goto again; | |
4633a7c4 | 8141 | break; |
b1cb66bf | 8142 | case ' ': |
8143 | proto++; | |
8144 | continue; | |
4633a7c4 LW |
8145 | default: |
8146 | oops: | |
35c1215d | 8147 | Perl_croak(aTHX_ "Malformed prototype for %s: %"SVf, |
be2597df | 8148 | gv_ename(namegv), SVfARG(cv)); |
4633a7c4 LW |
8149 | } |
8150 | } | |
8151 | else | |
11343788 MB |
8152 | list(o2); |
8153 | mod(o2, OP_ENTERSUB); | |
8154 | prev = o2; | |
8155 | o2 = o2->op_sibling; | |
551405c4 | 8156 | } /* while */ |
236b555a RGS |
8157 | if (o2 == cvop && proto && *proto == '_') { |
8158 | /* generate an access to $_ */ | |
8159 | o2 = newDEFSVOP(); | |
8160 | o2->op_sibling = prev->op_sibling; | |
8161 | prev->op_sibling = o2; /* instead of cvop */ | |
8162 | } | |
cbf82dd0 | 8163 | if (proto && !optional && proto_end > proto && |
236b555a | 8164 | (*proto != '@' && *proto != '%' && *proto != ';' && *proto != '_')) |
5dc0d613 | 8165 | return too_few_arguments(o, gv_ename(namegv)); |
0723351e | 8166 | if(delete_op) { |
eb8433b7 | 8167 | #ifdef PERL_MAD |
1d866c12 | 8168 | OP * const oldo = o; |
eb8433b7 | 8169 | #else |
06492da6 | 8170 | op_free(o); |
eb8433b7 | 8171 | #endif |
06492da6 | 8172 | o=newSVOP(OP_CONST, 0, newSViv(0)); |
eb8433b7 | 8173 | op_getmad(oldo,o,'O'); |
06492da6 | 8174 | } |
11343788 | 8175 | return o; |
79072805 LW |
8176 | } |
8177 | ||
8178 | OP * | |
cea2e8a9 | 8179 | Perl_ck_svconst(pTHX_ OP *o) |
8990e307 | 8180 | { |
7918f24d | 8181 | PERL_ARGS_ASSERT_CK_SVCONST; |
96a5add6 | 8182 | PERL_UNUSED_CONTEXT; |
11343788 MB |
8183 | SvREADONLY_on(cSVOPo->op_sv); |
8184 | return o; | |
8990e307 LW |
8185 | } |
8186 | ||
8187 | OP * | |
d4ac975e GA |
8188 | Perl_ck_chdir(pTHX_ OP *o) |
8189 | { | |
8190 | if (o->op_flags & OPf_KIDS) { | |
1496a290 | 8191 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
d4ac975e GA |
8192 | |
8193 | if (kid && kid->op_type == OP_CONST && | |
8194 | (kid->op_private & OPpCONST_BARE)) | |
8195 | { | |
8196 | o->op_flags |= OPf_SPECIAL; | |
8197 | kid->op_private &= ~OPpCONST_STRICT; | |
8198 | } | |
8199 | } | |
8200 | return ck_fun(o); | |
8201 | } | |
8202 | ||
8203 | OP * | |
cea2e8a9 | 8204 | Perl_ck_trunc(pTHX_ OP *o) |
79072805 | 8205 | { |
7918f24d NC |
8206 | PERL_ARGS_ASSERT_CK_TRUNC; |
8207 | ||
11343788 MB |
8208 | if (o->op_flags & OPf_KIDS) { |
8209 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 | 8210 | |
a0d0e21e LW |
8211 | if (kid->op_type == OP_NULL) |
8212 | kid = (SVOP*)kid->op_sibling; | |
bb53490d GS |
8213 | if (kid && kid->op_type == OP_CONST && |
8214 | (kid->op_private & OPpCONST_BARE)) | |
8215 | { | |
11343788 | 8216 | o->op_flags |= OPf_SPECIAL; |
bb53490d GS |
8217 | kid->op_private &= ~OPpCONST_STRICT; |
8218 | } | |
79072805 | 8219 | } |
11343788 | 8220 | return ck_fun(o); |
79072805 LW |
8221 | } |
8222 | ||
35fba0d9 | 8223 | OP * |
bab9c0ac RGS |
8224 | Perl_ck_unpack(pTHX_ OP *o) |
8225 | { | |
8226 | OP *kid = cLISTOPo->op_first; | |
7918f24d NC |
8227 | |
8228 | PERL_ARGS_ASSERT_CK_UNPACK; | |
8229 | ||
bab9c0ac RGS |
8230 | if (kid->op_sibling) { |
8231 | kid = kid->op_sibling; | |
8232 | if (!kid->op_sibling) | |
8233 | kid->op_sibling = newDEFSVOP(); | |
8234 | } | |
8235 | return ck_fun(o); | |
8236 | } | |
8237 | ||
8238 | OP * | |
35fba0d9 RG |
8239 | Perl_ck_substr(pTHX_ OP *o) |
8240 | { | |
7918f24d NC |
8241 | PERL_ARGS_ASSERT_CK_SUBSTR; |
8242 | ||
35fba0d9 | 8243 | o = ck_fun(o); |
1d866c12 | 8244 | if ((o->op_flags & OPf_KIDS) && (o->op_private == 4)) { |
35fba0d9 RG |
8245 | OP *kid = cLISTOPo->op_first; |
8246 | ||
8247 | if (kid->op_type == OP_NULL) | |
8248 | kid = kid->op_sibling; | |
8249 | if (kid) | |
8250 | kid->op_flags |= OPf_MOD; | |
8251 | ||
8252 | } | |
8253 | return o; | |
8254 | } | |
8255 | ||
878d132a NC |
8256 | OP * |
8257 | Perl_ck_each(pTHX_ OP *o) | |
8258 | { | |
d75c0fe7 | 8259 | dVAR; |
878d132a NC |
8260 | OP *kid = cLISTOPo->op_first; |
8261 | ||
7918f24d NC |
8262 | PERL_ARGS_ASSERT_CK_EACH; |
8263 | ||
878d132a NC |
8264 | if (kid->op_type == OP_PADAV || kid->op_type == OP_RV2AV) { |
8265 | const unsigned new_type = o->op_type == OP_EACH ? OP_AEACH | |
8266 | : o->op_type == OP_KEYS ? OP_AKEYS : OP_AVALUES; | |
8267 | o->op_type = new_type; | |
8268 | o->op_ppaddr = PL_ppaddr[new_type]; | |
8269 | } | |
8270 | else if (!(kid->op_type == OP_PADHV || kid->op_type == OP_RV2HV | |
8271 | || (kid->op_type == OP_CONST && kid->op_private & OPpCONST_BARE) | |
8272 | )) { | |
8273 | bad_type(1, "hash or array", PL_op_desc[o->op_type], kid); | |
8274 | return o; | |
8275 | } | |
8276 | return ck_fun(o); | |
8277 | } | |
8278 | ||
61b743bb DM |
8279 | /* A peephole optimizer. We visit the ops in the order they're to execute. |
8280 | * See the comments at the top of this file for more details about when | |
8281 | * peep() is called */ | |
463ee0b2 | 8282 | |
79072805 | 8283 | void |
864dbfa3 | 8284 | Perl_peep(pTHX_ register OP *o) |
79072805 | 8285 | { |
27da23d5 | 8286 | dVAR; |
c445ea15 | 8287 | register OP* oldop = NULL; |
2d8e6c8d | 8288 | |
2814eb74 | 8289 | if (!o || o->op_opt) |
79072805 | 8290 | return; |
a0d0e21e | 8291 | ENTER; |
462e5cf6 | 8292 | SAVEOP(); |
7766f137 | 8293 | SAVEVPTR(PL_curcop); |
a0d0e21e | 8294 | for (; o; o = o->op_next) { |
2814eb74 | 8295 | if (o->op_opt) |
a0d0e21e | 8296 | break; |
6d7dd4a5 NC |
8297 | /* By default, this op has now been optimised. A couple of cases below |
8298 | clear this again. */ | |
8299 | o->op_opt = 1; | |
533c011a | 8300 | PL_op = o; |
a0d0e21e LW |
8301 | switch (o->op_type) { |
8302 | case OP_NEXTSTATE: | |
8303 | case OP_DBSTATE: | |
3280af22 | 8304 | PL_curcop = ((COP*)o); /* for warnings */ |
a0d0e21e LW |
8305 | break; |
8306 | ||
a0d0e21e | 8307 | case OP_CONST: |
7a52d87a GS |
8308 | if (cSVOPo->op_private & OPpCONST_STRICT) |
8309 | no_bareword_allowed(o); | |
7766f137 | 8310 | #ifdef USE_ITHREADS |
996c9baa | 8311 | case OP_HINTSEVAL: |
3848b962 | 8312 | case OP_METHOD_NAMED: |
7766f137 GS |
8313 | /* Relocate sv to the pad for thread safety. |
8314 | * Despite being a "constant", the SV is written to, | |
8315 | * for reference counts, sv_upgrade() etc. */ | |
8316 | if (cSVOP->op_sv) { | |
6867be6d | 8317 | const PADOFFSET ix = pad_alloc(OP_CONST, SVs_PADTMP); |
996c9baa | 8318 | if (o->op_type != OP_METHOD_NAMED && SvPADTMP(cSVOPo->op_sv)) { |
6a7129a1 | 8319 | /* If op_sv is already a PADTMP then it is being used by |
9a049f1c | 8320 | * some pad, so make a copy. */ |
dd2155a4 DM |
8321 | sv_setsv(PAD_SVl(ix),cSVOPo->op_sv); |
8322 | SvREADONLY_on(PAD_SVl(ix)); | |
6a7129a1 GS |
8323 | SvREFCNT_dec(cSVOPo->op_sv); |
8324 | } | |
996c9baa | 8325 | else if (o->op_type != OP_METHOD_NAMED |
052ca17e NC |
8326 | && cSVOPo->op_sv == &PL_sv_undef) { |
8327 | /* PL_sv_undef is hack - it's unsafe to store it in the | |
8328 | AV that is the pad, because av_fetch treats values of | |
8329 | PL_sv_undef as a "free" AV entry and will merrily | |
8330 | replace them with a new SV, causing pad_alloc to think | |
8331 | that this pad slot is free. (When, clearly, it is not) | |
8332 | */ | |
8333 | SvOK_off(PAD_SVl(ix)); | |
8334 | SvPADTMP_on(PAD_SVl(ix)); | |
8335 | SvREADONLY_on(PAD_SVl(ix)); | |
8336 | } | |
6a7129a1 | 8337 | else { |
dd2155a4 | 8338 | SvREFCNT_dec(PAD_SVl(ix)); |
6a7129a1 | 8339 | SvPADTMP_on(cSVOPo->op_sv); |
dd2155a4 | 8340 | PAD_SETSV(ix, cSVOPo->op_sv); |
9a049f1c | 8341 | /* XXX I don't know how this isn't readonly already. */ |
dd2155a4 | 8342 | SvREADONLY_on(PAD_SVl(ix)); |
6a7129a1 | 8343 | } |
a0714e2c | 8344 | cSVOPo->op_sv = NULL; |
7766f137 GS |
8345 | o->op_targ = ix; |
8346 | } | |
8347 | #endif | |
07447971 GS |
8348 | break; |
8349 | ||
df91b2c5 AE |
8350 | case OP_CONCAT: |
8351 | if (o->op_next && o->op_next->op_type == OP_STRINGIFY) { | |
8352 | if (o->op_next->op_private & OPpTARGET_MY) { | |
8353 | if (o->op_flags & OPf_STACKED) /* chained concats */ | |
a6aa0b75 | 8354 | break; /* ignore_optimization */ |
df91b2c5 AE |
8355 | else { |
8356 | /* assert(PL_opargs[o->op_type] & OA_TARGLEX); */ | |
8357 | o->op_targ = o->op_next->op_targ; | |
8358 | o->op_next->op_targ = 0; | |
8359 | o->op_private |= OPpTARGET_MY; | |
8360 | } | |
8361 | } | |
8362 | op_null(o->op_next); | |
8363 | } | |
df91b2c5 | 8364 | break; |
6d7dd4a5 NC |
8365 | case OP_STUB: |
8366 | if ((o->op_flags & OPf_WANT) != OPf_WANT_LIST) { | |
8367 | break; /* Scalar stub must produce undef. List stub is noop */ | |
8368 | } | |
8369 | goto nothin; | |
79072805 | 8370 | case OP_NULL: |
acb36ea4 | 8371 | if (o->op_targ == OP_NEXTSTATE |
5edb5b2a | 8372 | || o->op_targ == OP_DBSTATE) |
acb36ea4 | 8373 | { |
3280af22 | 8374 | PL_curcop = ((COP*)o); |
acb36ea4 | 8375 | } |
dad75012 AMS |
8376 | /* XXX: We avoid setting op_seq here to prevent later calls |
8377 | to peep() from mistakenly concluding that optimisation | |
8378 | has already occurred. This doesn't fix the real problem, | |
8379 | though (See 20010220.007). AMS 20010719 */ | |
2814eb74 | 8380 | /* op_seq functionality is now replaced by op_opt */ |
6d7dd4a5 | 8381 | o->op_opt = 0; |
f46f2f82 | 8382 | /* FALL THROUGH */ |
79072805 | 8383 | case OP_SCALAR: |
93a17b20 | 8384 | case OP_LINESEQ: |
463ee0b2 | 8385 | case OP_SCOPE: |
6d7dd4a5 | 8386 | nothin: |
a0d0e21e LW |
8387 | if (oldop && o->op_next) { |
8388 | oldop->op_next = o->op_next; | |
6d7dd4a5 | 8389 | o->op_opt = 0; |
79072805 LW |
8390 | continue; |
8391 | } | |
79072805 LW |
8392 | break; |
8393 | ||
6a077020 | 8394 | case OP_PADAV: |
79072805 | 8395 | case OP_GV: |
6a077020 | 8396 | if (o->op_type == OP_PADAV || o->op_next->op_type == OP_RV2AV) { |
0bd48802 | 8397 | OP* const pop = (o->op_type == OP_PADAV) ? |
6a077020 | 8398 | o->op_next : o->op_next->op_next; |
a0d0e21e | 8399 | IV i; |
f9dc862f | 8400 | if (pop && pop->op_type == OP_CONST && |
af5acbb4 | 8401 | ((PL_op = pop->op_next)) && |
8990e307 | 8402 | pop->op_next->op_type == OP_AELEM && |
a0d0e21e | 8403 | !(pop->op_next->op_private & |
78f9721b | 8404 | (OPpLVAL_INTRO|OPpLVAL_DEFER|OPpDEREF|OPpMAYBE_LVSUB)) && |
fc15ae8f | 8405 | (i = SvIV(((SVOP*)pop)->op_sv) - CopARYBASE_get(PL_curcop)) |
a0d0e21e | 8406 | <= 255 && |
8990e307 LW |
8407 | i >= 0) |
8408 | { | |
350de78d | 8409 | GV *gv; |
af5acbb4 DM |
8410 | if (cSVOPx(pop)->op_private & OPpCONST_STRICT) |
8411 | no_bareword_allowed(pop); | |
6a077020 DM |
8412 | if (o->op_type == OP_GV) |
8413 | op_null(o->op_next); | |
93c66552 DM |
8414 | op_null(pop->op_next); |
8415 | op_null(pop); | |
a0d0e21e LW |
8416 | o->op_flags |= pop->op_next->op_flags & OPf_MOD; |
8417 | o->op_next = pop->op_next->op_next; | |
22c35a8c | 8418 | o->op_ppaddr = PL_ppaddr[OP_AELEMFAST]; |
a0d0e21e | 8419 | o->op_private = (U8)i; |
6a077020 DM |
8420 | if (o->op_type == OP_GV) { |
8421 | gv = cGVOPo_gv; | |
8422 | GvAVn(gv); | |
8423 | } | |
8424 | else | |
8425 | o->op_flags |= OPf_SPECIAL; | |
8426 | o->op_type = OP_AELEMFAST; | |
8427 | } | |
6a077020 DM |
8428 | break; |
8429 | } | |
8430 | ||
8431 | if (o->op_next->op_type == OP_RV2SV) { | |
8432 | if (!(o->op_next->op_private & OPpDEREF)) { | |
8433 | op_null(o->op_next); | |
8434 | o->op_private |= o->op_next->op_private & (OPpLVAL_INTRO | |
8435 | | OPpOUR_INTRO); | |
8436 | o->op_next = o->op_next->op_next; | |
8437 | o->op_type = OP_GVSV; | |
8438 | o->op_ppaddr = PL_ppaddr[OP_GVSV]; | |
8990e307 | 8439 | } |
79072805 | 8440 | } |
e476b1b5 | 8441 | else if ((o->op_private & OPpEARLY_CV) && ckWARN(WARN_PROTOTYPE)) { |
551405c4 | 8442 | GV * const gv = cGVOPo_gv; |
b15aece3 | 8443 | if (SvTYPE(gv) == SVt_PVGV && GvCV(gv) && SvPVX_const(GvCV(gv))) { |
76cd736e | 8444 | /* XXX could check prototype here instead of just carping */ |
551405c4 | 8445 | SV * const sv = sv_newmortal(); |
bd61b366 | 8446 | gv_efullname3(sv, gv, NULL); |
9014280d | 8447 | Perl_warner(aTHX_ packWARN(WARN_PROTOTYPE), |
35c1215d | 8448 | "%"SVf"() called too early to check prototype", |
be2597df | 8449 | SVfARG(sv)); |
76cd736e GS |
8450 | } |
8451 | } | |
89de2904 AMS |
8452 | else if (o->op_next->op_type == OP_READLINE |
8453 | && o->op_next->op_next->op_type == OP_CONCAT | |
8454 | && (o->op_next->op_next->op_flags & OPf_STACKED)) | |
8455 | { | |
d2c45030 AMS |
8456 | /* Turn "$a .= <FH>" into an OP_RCATLINE. AMS 20010917 */ |
8457 | o->op_type = OP_RCATLINE; | |
8458 | o->op_flags |= OPf_STACKED; | |
8459 | o->op_ppaddr = PL_ppaddr[OP_RCATLINE]; | |
89de2904 | 8460 | op_null(o->op_next->op_next); |
d2c45030 | 8461 | op_null(o->op_next); |
89de2904 | 8462 | } |
76cd736e | 8463 | |
79072805 LW |
8464 | break; |
8465 | ||
a0d0e21e | 8466 | case OP_MAPWHILE: |
79072805 LW |
8467 | case OP_GREPWHILE: |
8468 | case OP_AND: | |
8469 | case OP_OR: | |
c963b151 | 8470 | case OP_DOR: |
2c2d71f5 JH |
8471 | case OP_ANDASSIGN: |
8472 | case OP_ORASSIGN: | |
c963b151 | 8473 | case OP_DORASSIGN: |
1a67a97c SM |
8474 | case OP_COND_EXPR: |
8475 | case OP_RANGE: | |
c5917253 | 8476 | case OP_ONCE: |
fd4d1407 IZ |
8477 | while (cLOGOP->op_other->op_type == OP_NULL) |
8478 | cLOGOP->op_other = cLOGOP->op_other->op_next; | |
a2efc822 | 8479 | peep(cLOGOP->op_other); /* Recursive calls are not replaced by fptr calls */ |
79072805 LW |
8480 | break; |
8481 | ||
79072805 | 8482 | case OP_ENTERLOOP: |
9c2ca71a | 8483 | case OP_ENTERITER: |
58cccf98 SM |
8484 | while (cLOOP->op_redoop->op_type == OP_NULL) |
8485 | cLOOP->op_redoop = cLOOP->op_redoop->op_next; | |
79072805 | 8486 | peep(cLOOP->op_redoop); |
58cccf98 SM |
8487 | while (cLOOP->op_nextop->op_type == OP_NULL) |
8488 | cLOOP->op_nextop = cLOOP->op_nextop->op_next; | |
79072805 | 8489 | peep(cLOOP->op_nextop); |
58cccf98 SM |
8490 | while (cLOOP->op_lastop->op_type == OP_NULL) |
8491 | cLOOP->op_lastop = cLOOP->op_lastop->op_next; | |
79072805 LW |
8492 | peep(cLOOP->op_lastop); |
8493 | break; | |
8494 | ||
79072805 | 8495 | case OP_SUBST: |
29f2e912 NC |
8496 | assert(!(cPMOP->op_pmflags & PMf_ONCE)); |
8497 | while (cPMOP->op_pmstashstartu.op_pmreplstart && | |
8498 | cPMOP->op_pmstashstartu.op_pmreplstart->op_type == OP_NULL) | |
8499 | cPMOP->op_pmstashstartu.op_pmreplstart | |
8500 | = cPMOP->op_pmstashstartu.op_pmreplstart->op_next; | |
8501 | peep(cPMOP->op_pmstashstartu.op_pmreplstart); | |
79072805 LW |
8502 | break; |
8503 | ||
a0d0e21e | 8504 | case OP_EXEC: |
041457d9 DM |
8505 | if (o->op_next && o->op_next->op_type == OP_NEXTSTATE |
8506 | && ckWARN(WARN_SYNTAX)) | |
8507 | { | |
1496a290 AL |
8508 | if (o->op_next->op_sibling) { |
8509 | const OPCODE type = o->op_next->op_sibling->op_type; | |
8510 | if (type != OP_EXIT && type != OP_WARN && type != OP_DIE) { | |
8511 | const line_t oldline = CopLINE(PL_curcop); | |
8512 | CopLINE_set(PL_curcop, CopLINE((COP*)o->op_next)); | |
8513 | Perl_warner(aTHX_ packWARN(WARN_EXEC), | |
8514 | "Statement unlikely to be reached"); | |
8515 | Perl_warner(aTHX_ packWARN(WARN_EXEC), | |
8516 | "\t(Maybe you meant system() when you said exec()?)\n"); | |
8517 | CopLINE_set(PL_curcop, oldline); | |
8518 | } | |
a0d0e21e LW |
8519 | } |
8520 | } | |
8521 | break; | |
b2ffa427 | 8522 | |
c750a3ec | 8523 | case OP_HELEM: { |
e75d1f10 | 8524 | UNOP *rop; |
6d822dc4 | 8525 | SV *lexname; |
e75d1f10 | 8526 | GV **fields; |
6d822dc4 | 8527 | SV **svp, *sv; |
d5263905 | 8528 | const char *key = NULL; |
c750a3ec | 8529 | STRLEN keylen; |
b2ffa427 | 8530 | |
1c846c1f | 8531 | if (((BINOP*)o)->op_last->op_type != OP_CONST) |
c750a3ec | 8532 | break; |
1c846c1f NIS |
8533 | |
8534 | /* Make the CONST have a shared SV */ | |
8535 | svp = cSVOPx_svp(((BINOP*)o)->op_last); | |
38bb37b9 | 8536 | if (!SvFAKE(sv = *svp) || !SvREADONLY(sv)) { |
d5263905 | 8537 | key = SvPV_const(sv, keylen); |
25716404 | 8538 | lexname = newSVpvn_share(key, |
bb7a0f54 | 8539 | SvUTF8(sv) ? -(I32)keylen : (I32)keylen, |
25716404 | 8540 | 0); |
1c846c1f NIS |
8541 | SvREFCNT_dec(sv); |
8542 | *svp = lexname; | |
8543 | } | |
e75d1f10 RD |
8544 | |
8545 | if ((o->op_private & (OPpLVAL_INTRO))) | |
8546 | break; | |
8547 | ||
8548 | rop = (UNOP*)((BINOP*)o)->op_first; | |
8549 | if (rop->op_type != OP_RV2HV || rop->op_first->op_type != OP_PADSV) | |
8550 | break; | |
8551 | lexname = *av_fetch(PL_comppad_name, rop->op_first->op_targ, TRUE); | |
00b1698f | 8552 | if (!SvPAD_TYPED(lexname)) |
e75d1f10 | 8553 | break; |
a4fc7abc | 8554 | fields = (GV**)hv_fetchs(SvSTASH(lexname), "FIELDS", FALSE); |
e75d1f10 RD |
8555 | if (!fields || !GvHV(*fields)) |
8556 | break; | |
93524f2b | 8557 | key = SvPV_const(*svp, keylen); |
e75d1f10 | 8558 | if (!hv_fetch(GvHV(*fields), key, |
bb7a0f54 | 8559 | SvUTF8(*svp) ? -(I32)keylen : (I32)keylen, FALSE)) |
e75d1f10 RD |
8560 | { |
8561 | Perl_croak(aTHX_ "No such class field \"%s\" " | |
8562 | "in variable %s of type %s", | |
93524f2b | 8563 | key, SvPV_nolen_const(lexname), HvNAME_get(SvSTASH(lexname))); |
e75d1f10 RD |
8564 | } |
8565 | ||
6d822dc4 MS |
8566 | break; |
8567 | } | |
c750a3ec | 8568 | |
e75d1f10 RD |
8569 | case OP_HSLICE: { |
8570 | UNOP *rop; | |
8571 | SV *lexname; | |
8572 | GV **fields; | |
8573 | SV **svp; | |
93524f2b | 8574 | const char *key; |
e75d1f10 RD |
8575 | STRLEN keylen; |
8576 | SVOP *first_key_op, *key_op; | |
8577 | ||
8578 | if ((o->op_private & (OPpLVAL_INTRO)) | |
8579 | /* I bet there's always a pushmark... */ | |
8580 | || ((LISTOP*)o)->op_first->op_sibling->op_type != OP_LIST) | |
8581 | /* hmmm, no optimization if list contains only one key. */ | |
8582 | break; | |
8583 | rop = (UNOP*)((LISTOP*)o)->op_last; | |
8584 | if (rop->op_type != OP_RV2HV) | |
8585 | break; | |
8586 | if (rop->op_first->op_type == OP_PADSV) | |
8587 | /* @$hash{qw(keys here)} */ | |
8588 | rop = (UNOP*)rop->op_first; | |
8589 | else { | |
8590 | /* @{$hash}{qw(keys here)} */ | |
8591 | if (rop->op_first->op_type == OP_SCOPE | |
8592 | && cLISTOPx(rop->op_first)->op_last->op_type == OP_PADSV) | |
8593 | { | |
8594 | rop = (UNOP*)cLISTOPx(rop->op_first)->op_last; | |
8595 | } | |
8596 | else | |
8597 | break; | |
8598 | } | |
8599 | ||
8600 | lexname = *av_fetch(PL_comppad_name, rop->op_targ, TRUE); | |
00b1698f | 8601 | if (!SvPAD_TYPED(lexname)) |
e75d1f10 | 8602 | break; |
a4fc7abc | 8603 | fields = (GV**)hv_fetchs(SvSTASH(lexname), "FIELDS", FALSE); |
e75d1f10 RD |
8604 | if (!fields || !GvHV(*fields)) |
8605 | break; | |
8606 | /* Again guessing that the pushmark can be jumped over.... */ | |
8607 | first_key_op = (SVOP*)((LISTOP*)((LISTOP*)o)->op_first->op_sibling) | |
8608 | ->op_first->op_sibling; | |
8609 | for (key_op = first_key_op; key_op; | |
8610 | key_op = (SVOP*)key_op->op_sibling) { | |
8611 | if (key_op->op_type != OP_CONST) | |
8612 | continue; | |
8613 | svp = cSVOPx_svp(key_op); | |
93524f2b | 8614 | key = SvPV_const(*svp, keylen); |
e75d1f10 | 8615 | if (!hv_fetch(GvHV(*fields), key, |
bb7a0f54 | 8616 | SvUTF8(*svp) ? -(I32)keylen : (I32)keylen, FALSE)) |
e75d1f10 RD |
8617 | { |
8618 | Perl_croak(aTHX_ "No such class field \"%s\" " | |
8619 | "in variable %s of type %s", | |
bfcb3514 | 8620 | key, SvPV_nolen(lexname), HvNAME_get(SvSTASH(lexname))); |
e75d1f10 RD |
8621 | } |
8622 | } | |
8623 | break; | |
8624 | } | |
8625 | ||
fe1bc4cf | 8626 | case OP_SORT: { |
fe1bc4cf | 8627 | /* will point to RV2AV or PADAV op on LHS/RHS of assign */ |
551405c4 | 8628 | OP *oleft; |
fe1bc4cf DM |
8629 | OP *o2; |
8630 | ||
fe1bc4cf | 8631 | /* check that RHS of sort is a single plain array */ |
551405c4 | 8632 | OP *oright = cUNOPo->op_first; |
fe1bc4cf DM |
8633 | if (!oright || oright->op_type != OP_PUSHMARK) |
8634 | break; | |
471178c0 NC |
8635 | |
8636 | /* reverse sort ... can be optimised. */ | |
8637 | if (!cUNOPo->op_sibling) { | |
8638 | /* Nothing follows us on the list. */ | |
551405c4 | 8639 | OP * const reverse = o->op_next; |
471178c0 NC |
8640 | |
8641 | if (reverse->op_type == OP_REVERSE && | |
8642 | (reverse->op_flags & OPf_WANT) == OPf_WANT_LIST) { | |
551405c4 | 8643 | OP * const pushmark = cUNOPx(reverse)->op_first; |
471178c0 NC |
8644 | if (pushmark && (pushmark->op_type == OP_PUSHMARK) |
8645 | && (cUNOPx(pushmark)->op_sibling == o)) { | |
8646 | /* reverse -> pushmark -> sort */ | |
8647 | o->op_private |= OPpSORT_REVERSE; | |
8648 | op_null(reverse); | |
8649 | pushmark->op_next = oright->op_next; | |
8650 | op_null(oright); | |
8651 | } | |
8652 | } | |
8653 | } | |
8654 | ||
8655 | /* make @a = sort @a act in-place */ | |
8656 | ||
fe1bc4cf DM |
8657 | oright = cUNOPx(oright)->op_sibling; |
8658 | if (!oright) | |
8659 | break; | |
8660 | if (oright->op_type == OP_NULL) { /* skip sort block/sub */ | |
8661 | oright = cUNOPx(oright)->op_sibling; | |
8662 | } | |
8663 | ||
8664 | if (!oright || | |
8665 | (oright->op_type != OP_RV2AV && oright->op_type != OP_PADAV) | |
8666 | || oright->op_next != o | |
8667 | || (oright->op_private & OPpLVAL_INTRO) | |
8668 | ) | |
8669 | break; | |
8670 | ||
8671 | /* o2 follows the chain of op_nexts through the LHS of the | |
8672 | * assign (if any) to the aassign op itself */ | |
8673 | o2 = o->op_next; | |
8674 | if (!o2 || o2->op_type != OP_NULL) | |
8675 | break; | |
8676 | o2 = o2->op_next; | |
8677 | if (!o2 || o2->op_type != OP_PUSHMARK) | |
8678 | break; | |
8679 | o2 = o2->op_next; | |
8680 | if (o2 && o2->op_type == OP_GV) | |
8681 | o2 = o2->op_next; | |
8682 | if (!o2 | |
8683 | || (o2->op_type != OP_PADAV && o2->op_type != OP_RV2AV) | |
8684 | || (o2->op_private & OPpLVAL_INTRO) | |
8685 | ) | |
8686 | break; | |
8687 | oleft = o2; | |
8688 | o2 = o2->op_next; | |
8689 | if (!o2 || o2->op_type != OP_NULL) | |
8690 | break; | |
8691 | o2 = o2->op_next; | |
8692 | if (!o2 || o2->op_type != OP_AASSIGN | |
8693 | || (o2->op_flags & OPf_WANT) != OPf_WANT_VOID) | |
8694 | break; | |
8695 | ||
db7511db DM |
8696 | /* check that the sort is the first arg on RHS of assign */ |
8697 | ||
8698 | o2 = cUNOPx(o2)->op_first; | |
8699 | if (!o2 || o2->op_type != OP_NULL) | |
8700 | break; | |
8701 | o2 = cUNOPx(o2)->op_first; | |
8702 | if (!o2 || o2->op_type != OP_PUSHMARK) | |
8703 | break; | |
8704 | if (o2->op_sibling != o) | |
8705 | break; | |
8706 | ||
fe1bc4cf DM |
8707 | /* check the array is the same on both sides */ |
8708 | if (oleft->op_type == OP_RV2AV) { | |
8709 | if (oright->op_type != OP_RV2AV | |
8710 | || !cUNOPx(oright)->op_first | |
8711 | || cUNOPx(oright)->op_first->op_type != OP_GV | |
8712 | || cGVOPx_gv(cUNOPx(oleft)->op_first) != | |
8713 | cGVOPx_gv(cUNOPx(oright)->op_first) | |
8714 | ) | |
8715 | break; | |
8716 | } | |
8717 | else if (oright->op_type != OP_PADAV | |
8718 | || oright->op_targ != oleft->op_targ | |
8719 | ) | |
8720 | break; | |
8721 | ||
8722 | /* transfer MODishness etc from LHS arg to RHS arg */ | |
8723 | oright->op_flags = oleft->op_flags; | |
8724 | o->op_private |= OPpSORT_INPLACE; | |
8725 | ||
8726 | /* excise push->gv->rv2av->null->aassign */ | |
8727 | o2 = o->op_next->op_next; | |
8728 | op_null(o2); /* PUSHMARK */ | |
8729 | o2 = o2->op_next; | |
8730 | if (o2->op_type == OP_GV) { | |
8731 | op_null(o2); /* GV */ | |
8732 | o2 = o2->op_next; | |
8733 | } | |
8734 | op_null(o2); /* RV2AV or PADAV */ | |
8735 | o2 = o2->op_next->op_next; | |
8736 | op_null(o2); /* AASSIGN */ | |
8737 | ||
8738 | o->op_next = o2->op_next; | |
8739 | ||
8740 | break; | |
8741 | } | |
ef3e5ea9 NC |
8742 | |
8743 | case OP_REVERSE: { | |
e682d7b7 | 8744 | OP *ourmark, *theirmark, *ourlast, *iter, *expushmark, *rv2av; |
ce335f37 | 8745 | OP *gvop = NULL; |
ef3e5ea9 | 8746 | LISTOP *enter, *exlist; |
ef3e5ea9 NC |
8747 | |
8748 | enter = (LISTOP *) o->op_next; | |
8749 | if (!enter) | |
8750 | break; | |
8751 | if (enter->op_type == OP_NULL) { | |
8752 | enter = (LISTOP *) enter->op_next; | |
8753 | if (!enter) | |
8754 | break; | |
8755 | } | |
d46f46af NC |
8756 | /* for $a (...) will have OP_GV then OP_RV2GV here. |
8757 | for (...) just has an OP_GV. */ | |
ce335f37 NC |
8758 | if (enter->op_type == OP_GV) { |
8759 | gvop = (OP *) enter; | |
8760 | enter = (LISTOP *) enter->op_next; | |
8761 | if (!enter) | |
8762 | break; | |
d46f46af NC |
8763 | if (enter->op_type == OP_RV2GV) { |
8764 | enter = (LISTOP *) enter->op_next; | |
8765 | if (!enter) | |
ce335f37 | 8766 | break; |
d46f46af | 8767 | } |
ce335f37 NC |
8768 | } |
8769 | ||
ef3e5ea9 NC |
8770 | if (enter->op_type != OP_ENTERITER) |
8771 | break; | |
8772 | ||
8773 | iter = enter->op_next; | |
8774 | if (!iter || iter->op_type != OP_ITER) | |
8775 | break; | |
8776 | ||
ce335f37 NC |
8777 | expushmark = enter->op_first; |
8778 | if (!expushmark || expushmark->op_type != OP_NULL | |
8779 | || expushmark->op_targ != OP_PUSHMARK) | |
8780 | break; | |
8781 | ||
8782 | exlist = (LISTOP *) expushmark->op_sibling; | |
ef3e5ea9 NC |
8783 | if (!exlist || exlist->op_type != OP_NULL |
8784 | || exlist->op_targ != OP_LIST) | |
8785 | break; | |
8786 | ||
8787 | if (exlist->op_last != o) { | |
8788 | /* Mmm. Was expecting to point back to this op. */ | |
8789 | break; | |
8790 | } | |
8791 | theirmark = exlist->op_first; | |
8792 | if (!theirmark || theirmark->op_type != OP_PUSHMARK) | |
8793 | break; | |
8794 | ||
c491ecac | 8795 | if (theirmark->op_sibling != o) { |
ef3e5ea9 NC |
8796 | /* There's something between the mark and the reverse, eg |
8797 | for (1, reverse (...)) | |
8798 | so no go. */ | |
8799 | break; | |
8800 | } | |
8801 | ||
c491ecac NC |
8802 | ourmark = ((LISTOP *)o)->op_first; |
8803 | if (!ourmark || ourmark->op_type != OP_PUSHMARK) | |
8804 | break; | |
8805 | ||
ef3e5ea9 NC |
8806 | ourlast = ((LISTOP *)o)->op_last; |
8807 | if (!ourlast || ourlast->op_next != o) | |
8808 | break; | |
8809 | ||
e682d7b7 NC |
8810 | rv2av = ourmark->op_sibling; |
8811 | if (rv2av && rv2av->op_type == OP_RV2AV && rv2av->op_sibling == 0 | |
8812 | && rv2av->op_flags == (OPf_WANT_LIST | OPf_KIDS) | |
8813 | && enter->op_flags == (OPf_WANT_LIST | OPf_KIDS)) { | |
8814 | /* We're just reversing a single array. */ | |
8815 | rv2av->op_flags = OPf_WANT_SCALAR | OPf_KIDS | OPf_REF; | |
8816 | enter->op_flags |= OPf_STACKED; | |
8817 | } | |
8818 | ||
ef3e5ea9 NC |
8819 | /* We don't have control over who points to theirmark, so sacrifice |
8820 | ours. */ | |
8821 | theirmark->op_next = ourmark->op_next; | |
8822 | theirmark->op_flags = ourmark->op_flags; | |
ce335f37 | 8823 | ourlast->op_next = gvop ? gvop : (OP *) enter; |
ef3e5ea9 NC |
8824 | op_null(ourmark); |
8825 | op_null(o); | |
8826 | enter->op_private |= OPpITER_REVERSED; | |
8827 | iter->op_private |= OPpITER_REVERSED; | |
8828 | ||
8829 | break; | |
8830 | } | |
e26df76a NC |
8831 | |
8832 | case OP_SASSIGN: { | |
8833 | OP *rv2gv; | |
8834 | UNOP *refgen, *rv2cv; | |
8835 | LISTOP *exlist; | |
8836 | ||
50baa5ea | 8837 | if ((o->op_flags & OPf_WANT) != OPf_WANT_VOID) |
de3370bc NC |
8838 | break; |
8839 | ||
e26df76a NC |
8840 | if ((o->op_private & ~OPpASSIGN_BACKWARDS) != 2) |
8841 | break; | |
8842 | ||
8843 | rv2gv = ((BINOP *)o)->op_last; | |
8844 | if (!rv2gv || rv2gv->op_type != OP_RV2GV) | |
8845 | break; | |
8846 | ||
8847 | refgen = (UNOP *)((BINOP *)o)->op_first; | |
8848 | ||
8849 | if (!refgen || refgen->op_type != OP_REFGEN) | |
8850 | break; | |
8851 | ||
8852 | exlist = (LISTOP *)refgen->op_first; | |
8853 | if (!exlist || exlist->op_type != OP_NULL | |
8854 | || exlist->op_targ != OP_LIST) | |
8855 | break; | |
8856 | ||
8857 | if (exlist->op_first->op_type != OP_PUSHMARK) | |
8858 | break; | |
8859 | ||
8860 | rv2cv = (UNOP*)exlist->op_last; | |
8861 | ||
8862 | if (rv2cv->op_type != OP_RV2CV) | |
8863 | break; | |
8864 | ||
8865 | assert ((rv2gv->op_private & OPpDONT_INIT_GV) == 0); | |
8866 | assert ((o->op_private & OPpASSIGN_CV_TO_GV) == 0); | |
8867 | assert ((rv2cv->op_private & OPpMAY_RETURN_CONSTANT) == 0); | |
8868 | ||
8869 | o->op_private |= OPpASSIGN_CV_TO_GV; | |
8870 | rv2gv->op_private |= OPpDONT_INIT_GV; | |
8871 | rv2cv->op_private |= OPpMAY_RETURN_CONSTANT; | |
8872 | ||
8873 | break; | |
8874 | } | |
8875 | ||
fe1bc4cf | 8876 | |
0477511c NC |
8877 | case OP_QR: |
8878 | case OP_MATCH: | |
29f2e912 NC |
8879 | if (!(cPMOP->op_pmflags & PMf_ONCE)) { |
8880 | assert (!cPMOP->op_pmstashstartu.op_pmreplstart); | |
8881 | } | |
79072805 LW |
8882 | break; |
8883 | } | |
a0d0e21e | 8884 | oldop = o; |
79072805 | 8885 | } |
a0d0e21e | 8886 | LEAVE; |
79072805 | 8887 | } |
beab0874 | 8888 | |
cef6ea9d | 8889 | const char* |
1cb0ed9b | 8890 | Perl_custom_op_name(pTHX_ const OP* o) |
53e06cf0 | 8891 | { |
97aff369 | 8892 | dVAR; |
e1ec3a88 | 8893 | const IV index = PTR2IV(o->op_ppaddr); |
53e06cf0 SC |
8894 | SV* keysv; |
8895 | HE* he; | |
8896 | ||
7918f24d NC |
8897 | PERL_ARGS_ASSERT_CUSTOM_OP_NAME; |
8898 | ||
53e06cf0 | 8899 | if (!PL_custom_op_names) /* This probably shouldn't happen */ |
27da23d5 | 8900 | return (char *)PL_op_name[OP_CUSTOM]; |
53e06cf0 SC |
8901 | |
8902 | keysv = sv_2mortal(newSViv(index)); | |
8903 | ||
8904 | he = hv_fetch_ent(PL_custom_op_names, keysv, 0, 0); | |
8905 | if (!he) | |
27da23d5 | 8906 | return (char *)PL_op_name[OP_CUSTOM]; /* Don't know who you are */ |
53e06cf0 SC |
8907 | |
8908 | return SvPV_nolen(HeVAL(he)); | |
8909 | } | |
8910 | ||
cef6ea9d | 8911 | const char* |
1cb0ed9b | 8912 | Perl_custom_op_desc(pTHX_ const OP* o) |
53e06cf0 | 8913 | { |
97aff369 | 8914 | dVAR; |
e1ec3a88 | 8915 | const IV index = PTR2IV(o->op_ppaddr); |
53e06cf0 SC |
8916 | SV* keysv; |
8917 | HE* he; | |
8918 | ||
7918f24d NC |
8919 | PERL_ARGS_ASSERT_CUSTOM_OP_DESC; |
8920 | ||
53e06cf0 | 8921 | if (!PL_custom_op_descs) |
27da23d5 | 8922 | return (char *)PL_op_desc[OP_CUSTOM]; |
53e06cf0 SC |
8923 | |
8924 | keysv = sv_2mortal(newSViv(index)); | |
8925 | ||
8926 | he = hv_fetch_ent(PL_custom_op_descs, keysv, 0, 0); | |
8927 | if (!he) | |
27da23d5 | 8928 | return (char *)PL_op_desc[OP_CUSTOM]; |
53e06cf0 SC |
8929 | |
8930 | return SvPV_nolen(HeVAL(he)); | |
8931 | } | |
19e8ce8e | 8932 | |
beab0874 JT |
8933 | #include "XSUB.h" |
8934 | ||
8935 | /* Efficient sub that returns a constant scalar value. */ | |
8936 | static void | |
acfe0abc | 8937 | const_sv_xsub(pTHX_ CV* cv) |
beab0874 | 8938 | { |
97aff369 | 8939 | dVAR; |
beab0874 | 8940 | dXSARGS; |
99ab892b | 8941 | SV *const sv = MUTABLE_SV(XSANY.any_ptr); |
9cbac4c7 | 8942 | if (items != 0) { |
6f207bd3 | 8943 | NOOP; |
9cbac4c7 | 8944 | #if 0 |
fe13d51d | 8945 | /* diag_listed_as: SKIPME */ |
9cbac4c7 | 8946 | Perl_croak(aTHX_ "usage: %s::%s()", |
bfcb3514 | 8947 | HvNAME_get(GvSTASH(CvGV(cv))), GvNAME(CvGV(cv))); |
9cbac4c7 DM |
8948 | #endif |
8949 | } | |
99ab892b NC |
8950 | if (!sv) { |
8951 | XSRETURN(0); | |
8952 | } | |
9a049f1c | 8953 | EXTEND(sp, 1); |
99ab892b | 8954 | ST(0) = sv; |
beab0874 JT |
8955 | XSRETURN(1); |
8956 | } | |
4946a0fa NC |
8957 | |
8958 | /* | |
8959 | * Local variables: | |
8960 | * c-indentation-style: bsd | |
8961 | * c-basic-offset: 4 | |
8962 | * indent-tabs-mode: t | |
8963 | * End: | |
8964 | * | |
37442d52 RGS |
8965 | * ex: set ts=8 sts=4 sw=4 noet: |
8966 | */ |