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 | |
60 | top level node. | |
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) |
a2efc822 | 106 | |
238a4c30 NIS |
107 | #if defined(PL_OP_SLAB_ALLOC) |
108 | ||
f1fac472 NC |
109 | #ifdef PERL_DEBUG_READONLY_OPS |
110 | # define PERL_SLAB_SIZE 4096 | |
111 | # include <sys/mman.h> | |
112 | #endif | |
113 | ||
238a4c30 NIS |
114 | #ifndef PERL_SLAB_SIZE |
115 | #define PERL_SLAB_SIZE 2048 | |
116 | #endif | |
117 | ||
c7e45529 | 118 | void * |
e91d68d5 | 119 | Perl_Slab_Alloc(pTHX_ size_t sz) |
1c846c1f | 120 | { |
5186cc12 | 121 | dVAR; |
5a8e194f NIS |
122 | /* |
123 | * To make incrementing use count easy PL_OpSlab is an I32 * | |
124 | * To make inserting the link to slab PL_OpPtr is I32 ** | |
125 | * So compute size in units of sizeof(I32 *) as that is how Pl_OpPtr increments | |
126 | * Add an overhead for pointer to slab and round up as a number of pointers | |
127 | */ | |
128 | sz = (sz + 2*sizeof(I32 *) -1)/sizeof(I32 *); | |
238a4c30 | 129 | if ((PL_OpSpace -= sz) < 0) { |
f1fac472 NC |
130 | #ifdef PERL_DEBUG_READONLY_OPS |
131 | /* We need to allocate chunk by chunk so that we can control the VM | |
132 | mapping */ | |
5186cc12 | 133 | PL_OpPtr = (I32**) mmap(0, PERL_SLAB_SIZE*sizeof(I32*), PROT_READ|PROT_WRITE, |
f1fac472 NC |
134 | MAP_ANON|MAP_PRIVATE, -1, 0); |
135 | ||
136 | DEBUG_m(PerlIO_printf(Perl_debug_log, "mapped %lu at %p\n", | |
137 | (unsigned long) PERL_SLAB_SIZE*sizeof(I32*), | |
138 | PL_OpPtr)); | |
139 | if(PL_OpPtr == MAP_FAILED) { | |
140 | perror("mmap failed"); | |
141 | abort(); | |
142 | } | |
143 | #else | |
277e868c NC |
144 | |
145 | PL_OpPtr = (I32 **) PerlMemShared_calloc(PERL_SLAB_SIZE,sizeof(I32*)); | |
f1fac472 | 146 | #endif |
083fcd59 | 147 | if (!PL_OpPtr) { |
238a4c30 NIS |
148 | return NULL; |
149 | } | |
5a8e194f NIS |
150 | /* We reserve the 0'th I32 sized chunk as a use count */ |
151 | PL_OpSlab = (I32 *) PL_OpPtr; | |
152 | /* Reduce size by the use count word, and by the size we need. | |
153 | * Latter is to mimic the '-=' in the if() above | |
154 | */ | |
155 | PL_OpSpace = PERL_SLAB_SIZE - (sizeof(I32)+sizeof(I32 **)-1)/sizeof(I32 **) - sz; | |
238a4c30 NIS |
156 | /* Allocation pointer starts at the top. |
157 | Theory: because we build leaves before trunk allocating at end | |
158 | means that at run time access is cache friendly upward | |
159 | */ | |
5a8e194f | 160 | PL_OpPtr += PERL_SLAB_SIZE; |
f1fac472 NC |
161 | |
162 | #ifdef PERL_DEBUG_READONLY_OPS | |
163 | /* We remember this slab. */ | |
164 | /* This implementation isn't efficient, but it is simple. */ | |
5186cc12 | 165 | PL_slabs = (I32**) realloc(PL_slabs, sizeof(I32**) * (PL_slab_count + 1)); |
f1fac472 NC |
166 | PL_slabs[PL_slab_count++] = PL_OpSlab; |
167 | DEBUG_m(PerlIO_printf(Perl_debug_log, "Allocate %p\n", PL_OpSlab)); | |
168 | #endif | |
238a4c30 NIS |
169 | } |
170 | assert( PL_OpSpace >= 0 ); | |
171 | /* Move the allocation pointer down */ | |
172 | PL_OpPtr -= sz; | |
5a8e194f | 173 | assert( PL_OpPtr > (I32 **) PL_OpSlab ); |
238a4c30 NIS |
174 | *PL_OpPtr = PL_OpSlab; /* Note which slab it belongs to */ |
175 | (*PL_OpSlab)++; /* Increment use count of slab */ | |
5a8e194f | 176 | assert( PL_OpPtr+sz <= ((I32 **) PL_OpSlab + PERL_SLAB_SIZE) ); |
238a4c30 NIS |
177 | assert( *PL_OpSlab > 0 ); |
178 | return (void *)(PL_OpPtr + 1); | |
179 | } | |
180 | ||
f1fac472 NC |
181 | #ifdef PERL_DEBUG_READONLY_OPS |
182 | void | |
183 | Perl_pending_Slabs_to_ro(pTHX) { | |
184 | /* Turn all the allocated op slabs read only. */ | |
185 | U32 count = PL_slab_count; | |
186 | I32 **const slabs = PL_slabs; | |
187 | ||
188 | /* Reset the array of pending OP slabs, as we're about to turn this lot | |
189 | read only. Also, do it ahead of the loop in case the warn triggers, | |
190 | and a warn handler has an eval */ | |
191 | ||
f1fac472 NC |
192 | PL_slabs = NULL; |
193 | PL_slab_count = 0; | |
194 | ||
195 | /* Force a new slab for any further allocation. */ | |
196 | PL_OpSpace = 0; | |
197 | ||
198 | while (count--) { | |
5892a4d4 | 199 | void *const start = slabs[count]; |
f1fac472 NC |
200 | const size_t size = PERL_SLAB_SIZE* sizeof(I32*); |
201 | if(mprotect(start, size, PROT_READ)) { | |
202 | Perl_warn(aTHX_ "mprotect for %p %lu failed with %d", | |
203 | start, (unsigned long) size, errno); | |
204 | } | |
205 | } | |
5892a4d4 NC |
206 | |
207 | free(slabs); | |
f1fac472 NC |
208 | } |
209 | ||
210 | STATIC void | |
211 | S_Slab_to_rw(pTHX_ void *op) | |
212 | { | |
213 | I32 * const * const ptr = (I32 **) op; | |
214 | I32 * const slab = ptr[-1]; | |
7918f24d NC |
215 | |
216 | PERL_ARGS_ASSERT_SLAB_TO_RW; | |
217 | ||
f1fac472 NC |
218 | assert( ptr-1 > (I32 **) slab ); |
219 | assert( ptr < ( (I32 **) slab + PERL_SLAB_SIZE) ); | |
220 | assert( *slab > 0 ); | |
221 | if(mprotect(slab, PERL_SLAB_SIZE*sizeof(I32*), PROT_READ|PROT_WRITE)) { | |
222 | Perl_warn(aTHX_ "mprotect RW for %p %lu failed with %d", | |
223 | slab, (unsigned long) PERL_SLAB_SIZE*sizeof(I32*), errno); | |
224 | } | |
225 | } | |
fc97af9c NC |
226 | |
227 | OP * | |
228 | Perl_op_refcnt_inc(pTHX_ OP *o) | |
229 | { | |
230 | if(o) { | |
231 | Slab_to_rw(o); | |
232 | ++o->op_targ; | |
233 | } | |
234 | return o; | |
235 | ||
236 | } | |
237 | ||
238 | PADOFFSET | |
239 | Perl_op_refcnt_dec(pTHX_ OP *o) | |
240 | { | |
7918f24d | 241 | PERL_ARGS_ASSERT_OP_REFCNT_DEC; |
fc97af9c NC |
242 | Slab_to_rw(o); |
243 | return --o->op_targ; | |
244 | } | |
f1fac472 NC |
245 | #else |
246 | # define Slab_to_rw(op) | |
247 | #endif | |
248 | ||
c7e45529 AE |
249 | void |
250 | Perl_Slab_Free(pTHX_ void *op) | |
238a4c30 | 251 | { |
551405c4 | 252 | I32 * const * const ptr = (I32 **) op; |
aec46f14 | 253 | I32 * const slab = ptr[-1]; |
7918f24d | 254 | PERL_ARGS_ASSERT_SLAB_FREE; |
5a8e194f NIS |
255 | assert( ptr-1 > (I32 **) slab ); |
256 | assert( ptr < ( (I32 **) slab + PERL_SLAB_SIZE) ); | |
238a4c30 | 257 | assert( *slab > 0 ); |
f1fac472 | 258 | Slab_to_rw(op); |
238a4c30 | 259 | if (--(*slab) == 0) { |
7e4e8c89 NC |
260 | # ifdef NETWARE |
261 | # define PerlMemShared PerlMem | |
262 | # endif | |
083fcd59 | 263 | |
f1fac472 | 264 | #ifdef PERL_DEBUG_READONLY_OPS |
782a40f1 | 265 | U32 count = PL_slab_count; |
f1fac472 | 266 | /* Need to remove this slab from our list of slabs */ |
782a40f1 | 267 | if (count) { |
f1fac472 NC |
268 | while (count--) { |
269 | if (PL_slabs[count] == slab) { | |
5186cc12 | 270 | dVAR; |
f1fac472 NC |
271 | /* Found it. Move the entry at the end to overwrite it. */ |
272 | DEBUG_m(PerlIO_printf(Perl_debug_log, | |
273 | "Deallocate %p by moving %p from %lu to %lu\n", | |
274 | PL_OpSlab, | |
275 | PL_slabs[PL_slab_count - 1], | |
276 | PL_slab_count, count)); | |
277 | PL_slabs[count] = PL_slabs[--PL_slab_count]; | |
278 | /* Could realloc smaller at this point, but probably not | |
279 | worth it. */ | |
fc97af9c NC |
280 | if(munmap(slab, PERL_SLAB_SIZE*sizeof(I32*))) { |
281 | perror("munmap failed"); | |
282 | abort(); | |
283 | } | |
284 | break; | |
f1fac472 | 285 | } |
f1fac472 NC |
286 | } |
287 | } | |
288 | #else | |
083fcd59 | 289 | PerlMemShared_free(slab); |
f1fac472 | 290 | #endif |
238a4c30 NIS |
291 | if (slab == PL_OpSlab) { |
292 | PL_OpSpace = 0; | |
293 | } | |
294 | } | |
b7dc083c | 295 | } |
b7dc083c | 296 | #endif |
e50aee73 | 297 | /* |
ce6f1cbc | 298 | * In the following definition, the ", (OP*)0" is just to make the compiler |
a5f75d66 | 299 | * think the expression is of the right type: croak actually does a Siglongjmp. |
e50aee73 | 300 | */ |
11343788 | 301 | #define CHECKOP(type,o) \ |
ce6f1cbc | 302 | ((PL_op_mask && PL_op_mask[type]) \ |
5dc0d613 | 303 | ? ( op_free((OP*)o), \ |
cb77fdf0 | 304 | Perl_croak(aTHX_ "'%s' trapped by operation mask", PL_op_desc[type]), \ |
ce6f1cbc | 305 | (OP*)0 ) \ |
fc0dc3b3 | 306 | : CALL_FPTR(PL_check[type])(aTHX_ (OP*)o)) |
e50aee73 | 307 | |
e6438c1a | 308 | #define RETURN_UNLIMITED_NUMBER (PERL_INT_MAX / 2) |
c53d7c7d | 309 | |
8b6b16e7 | 310 | STATIC const char* |
cea2e8a9 | 311 | S_gv_ename(pTHX_ GV *gv) |
4633a7c4 | 312 | { |
46c461b5 | 313 | SV* const tmpsv = sv_newmortal(); |
7918f24d NC |
314 | |
315 | PERL_ARGS_ASSERT_GV_ENAME; | |
316 | ||
bd61b366 | 317 | gv_efullname3(tmpsv, gv, NULL); |
8b6b16e7 | 318 | return SvPV_nolen_const(tmpsv); |
4633a7c4 LW |
319 | } |
320 | ||
76e3520e | 321 | STATIC OP * |
cea2e8a9 | 322 | S_no_fh_allowed(pTHX_ OP *o) |
79072805 | 323 | { |
7918f24d NC |
324 | PERL_ARGS_ASSERT_NO_FH_ALLOWED; |
325 | ||
cea2e8a9 | 326 | yyerror(Perl_form(aTHX_ "Missing comma after first argument to %s function", |
53e06cf0 | 327 | OP_DESC(o))); |
11343788 | 328 | return o; |
79072805 LW |
329 | } |
330 | ||
76e3520e | 331 | STATIC OP * |
bfed75c6 | 332 | S_too_few_arguments(pTHX_ OP *o, const char *name) |
79072805 | 333 | { |
7918f24d NC |
334 | PERL_ARGS_ASSERT_TOO_FEW_ARGUMENTS; |
335 | ||
cea2e8a9 | 336 | yyerror(Perl_form(aTHX_ "Not enough arguments for %s", name)); |
11343788 | 337 | return o; |
79072805 LW |
338 | } |
339 | ||
76e3520e | 340 | STATIC OP * |
bfed75c6 | 341 | S_too_many_arguments(pTHX_ OP *o, const char *name) |
79072805 | 342 | { |
7918f24d NC |
343 | PERL_ARGS_ASSERT_TOO_MANY_ARGUMENTS; |
344 | ||
cea2e8a9 | 345 | yyerror(Perl_form(aTHX_ "Too many arguments for %s", name)); |
11343788 | 346 | return o; |
79072805 LW |
347 | } |
348 | ||
76e3520e | 349 | STATIC void |
6867be6d | 350 | S_bad_type(pTHX_ I32 n, const char *t, const char *name, const OP *kid) |
8990e307 | 351 | { |
7918f24d NC |
352 | PERL_ARGS_ASSERT_BAD_TYPE; |
353 | ||
cea2e8a9 | 354 | yyerror(Perl_form(aTHX_ "Type of arg %d to %s must be %s (not %s)", |
53e06cf0 | 355 | (int)n, name, t, OP_DESC(kid))); |
8990e307 LW |
356 | } |
357 | ||
7a52d87a | 358 | STATIC void |
6867be6d | 359 | S_no_bareword_allowed(pTHX_ const OP *o) |
7a52d87a | 360 | { |
7918f24d NC |
361 | PERL_ARGS_ASSERT_NO_BAREWORD_ALLOWED; |
362 | ||
eb8433b7 NC |
363 | if (PL_madskills) |
364 | return; /* various ok barewords are hidden in extra OP_NULL */ | |
5a844595 | 365 | qerror(Perl_mess(aTHX_ |
35c1215d | 366 | "Bareword \"%"SVf"\" not allowed while \"strict subs\" in use", |
be2597df | 367 | SVfARG(cSVOPo_sv))); |
7a52d87a GS |
368 | } |
369 | ||
79072805 LW |
370 | /* "register" allocation */ |
371 | ||
372 | PADOFFSET | |
262cbcdb | 373 | Perl_allocmy(pTHX_ const char *const name) |
93a17b20 | 374 | { |
97aff369 | 375 | dVAR; |
a0d0e21e | 376 | PADOFFSET off; |
12bd6ede | 377 | const bool is_our = (PL_parser->in_my == KEY_our); |
a0d0e21e | 378 | |
7918f24d NC |
379 | PERL_ARGS_ASSERT_ALLOCMY; |
380 | ||
59f00321 | 381 | /* complain about "my $<special_var>" etc etc */ |
6b58708b | 382 | if (*name && |
3edf23ff | 383 | !(is_our || |
155aba94 | 384 | isALPHA(name[1]) || |
39e02b42 | 385 | (USE_UTF8_IN_NAMES && UTF8_IS_START(name[1])) || |
6b58708b | 386 | (name[1] == '_' && (*name == '$' || name[2])))) |
834a4ddd | 387 | { |
6b58708b | 388 | /* name[2] is true if strlen(name) > 2 */ |
c4d0567e | 389 | if (!isPRINT(name[1]) || strchr("\t\n\r\f", name[1])) { |
aab6a793 NC |
390 | yyerror(Perl_form(aTHX_ "Can't use global %c^%c%s in \"%s\"", |
391 | name[0], toCTRL(name[1]), name + 2, | |
392 | PL_parser->in_my == KEY_state ? "state" : "my")); | |
d1544d85 | 393 | } else { |
aab6a793 NC |
394 | yyerror(Perl_form(aTHX_ "Can't use global %s in \"%s\"",name, |
395 | PL_parser->in_my == KEY_state ? "state" : "my")); | |
46fc3d4c | 396 | } |
a0d0e21e | 397 | } |
748a9306 | 398 | |
dd2155a4 | 399 | /* check for duplicate declaration */ |
3edf23ff | 400 | pad_check_dup(name, is_our, (PL_curstash ? PL_curstash : PL_defstash)); |
33b8ce05 | 401 | |
12bd6ede | 402 | if (PL_parser->in_my_stash && *name != '$') { |
dd2155a4 DM |
403 | yyerror(Perl_form(aTHX_ |
404 | "Can't declare class for non-scalar %s in \"%s\"", | |
952306ac | 405 | name, |
12bd6ede DM |
406 | is_our ? "our" |
407 | : PL_parser->in_my == KEY_state ? "state" : "my")); | |
6b35e009 GS |
408 | } |
409 | ||
dd2155a4 | 410 | /* allocate a spare slot and store the name in that slot */ |
93a17b20 | 411 | |
dd2155a4 | 412 | off = pad_add_name(name, |
12bd6ede | 413 | PL_parser->in_my_stash, |
3edf23ff | 414 | (is_our |
133706a6 RGS |
415 | /* $_ is always in main::, even with our */ |
416 | ? (PL_curstash && !strEQ(name,"$_") ? PL_curstash : PL_defstash) | |
5c284bb0 | 417 | : NULL |
dd2155a4 | 418 | ), |
952306ac | 419 | 0, /* not fake */ |
12bd6ede | 420 | PL_parser->in_my == KEY_state |
dd2155a4 | 421 | ); |
a74073ad DM |
422 | /* anon sub prototypes contains state vars should always be cloned, |
423 | * otherwise the state var would be shared between anon subs */ | |
424 | ||
425 | if (PL_parser->in_my == KEY_state && CvANON(PL_compcv)) | |
426 | CvCLONE_on(PL_compcv); | |
427 | ||
dd2155a4 | 428 | return off; |
79072805 LW |
429 | } |
430 | ||
d2c837a0 DM |
431 | /* free the body of an op without examining its contents. |
432 | * Always use this rather than FreeOp directly */ | |
433 | ||
4136a0f7 | 434 | static void |
d2c837a0 DM |
435 | S_op_destroy(pTHX_ OP *o) |
436 | { | |
437 | if (o->op_latefree) { | |
438 | o->op_latefreed = 1; | |
439 | return; | |
440 | } | |
441 | FreeOp(o); | |
442 | } | |
443 | ||
c4bd3ae5 NC |
444 | #ifdef USE_ITHREADS |
445 | # define forget_pmop(a,b) S_forget_pmop(aTHX_ a,b) | |
446 | #else | |
447 | # define forget_pmop(a,b) S_forget_pmop(aTHX_ a) | |
448 | #endif | |
d2c837a0 | 449 | |
79072805 LW |
450 | /* Destructor */ |
451 | ||
452 | void | |
864dbfa3 | 453 | Perl_op_free(pTHX_ OP *o) |
79072805 | 454 | { |
27da23d5 | 455 | dVAR; |
acb36ea4 | 456 | OPCODE type; |
79072805 | 457 | |
85594c31 | 458 | if (!o) |
79072805 | 459 | return; |
670f3923 DM |
460 | if (o->op_latefreed) { |
461 | if (o->op_latefree) | |
462 | return; | |
463 | goto do_free; | |
464 | } | |
79072805 | 465 | |
67566ccd | 466 | type = o->op_type; |
7934575e | 467 | if (o->op_private & OPpREFCOUNTED) { |
67566ccd | 468 | switch (type) { |
7934575e GS |
469 | case OP_LEAVESUB: |
470 | case OP_LEAVESUBLV: | |
471 | case OP_LEAVEEVAL: | |
472 | case OP_LEAVE: | |
473 | case OP_SCOPE: | |
474 | case OP_LEAVEWRITE: | |
67566ccd AL |
475 | { |
476 | PADOFFSET refcnt; | |
7934575e | 477 | OP_REFCNT_LOCK; |
4026c95a | 478 | refcnt = OpREFCNT_dec(o); |
7934575e | 479 | OP_REFCNT_UNLOCK; |
bfd0ff22 NC |
480 | if (refcnt) { |
481 | /* Need to find and remove any pattern match ops from the list | |
482 | we maintain for reset(). */ | |
483 | find_and_forget_pmops(o); | |
4026c95a | 484 | return; |
67566ccd | 485 | } |
bfd0ff22 | 486 | } |
7934575e GS |
487 | break; |
488 | default: | |
489 | break; | |
490 | } | |
491 | } | |
492 | ||
11343788 | 493 | if (o->op_flags & OPf_KIDS) { |
6867be6d | 494 | register OP *kid, *nextkid; |
11343788 | 495 | for (kid = cUNOPo->op_first; kid; kid = nextkid) { |
85e6fe83 | 496 | nextkid = kid->op_sibling; /* Get before next freeing kid */ |
79072805 | 497 | op_free(kid); |
85e6fe83 | 498 | } |
79072805 | 499 | } |
acb36ea4 | 500 | |
fc97af9c NC |
501 | #ifdef PERL_DEBUG_READONLY_OPS |
502 | Slab_to_rw(o); | |
503 | #endif | |
504 | ||
acb36ea4 GS |
505 | /* COP* is not cleared by op_clear() so that we may track line |
506 | * numbers etc even after null() */ | |
cc93af5f RGS |
507 | if (type == OP_NEXTSTATE || type == OP_DBSTATE |
508 | || (type == OP_NULL /* the COP might have been null'ed */ | |
509 | && ((OPCODE)o->op_targ == OP_NEXTSTATE | |
510 | || (OPCODE)o->op_targ == OP_DBSTATE))) { | |
acb36ea4 | 511 | cop_free((COP*)o); |
3235b7a3 | 512 | } |
acb36ea4 | 513 | |
c53f1caa RU |
514 | if (type == OP_NULL) |
515 | type = (OPCODE)o->op_targ; | |
516 | ||
acb36ea4 | 517 | op_clear(o); |
670f3923 DM |
518 | if (o->op_latefree) { |
519 | o->op_latefreed = 1; | |
520 | return; | |
521 | } | |
522 | do_free: | |
238a4c30 | 523 | FreeOp(o); |
4d494880 DM |
524 | #ifdef DEBUG_LEAKING_SCALARS |
525 | if (PL_op == o) | |
5f66b61c | 526 | PL_op = NULL; |
4d494880 | 527 | #endif |
acb36ea4 | 528 | } |
79072805 | 529 | |
93c66552 DM |
530 | void |
531 | Perl_op_clear(pTHX_ OP *o) | |
acb36ea4 | 532 | { |
13137afc | 533 | |
27da23d5 | 534 | dVAR; |
7918f24d NC |
535 | |
536 | PERL_ARGS_ASSERT_OP_CLEAR; | |
537 | ||
eb8433b7 NC |
538 | #ifdef PERL_MAD |
539 | /* if (o->op_madprop && o->op_madprop->mad_next) | |
540 | abort(); */ | |
3cc8d589 NC |
541 | /* FIXME for MAD - if I uncomment these two lines t/op/pack.t fails with |
542 | "modification of a read only value" for a reason I can't fathom why. | |
543 | It's the "" stringification of $_, where $_ was set to '' in a foreach | |
04a4d38e NC |
544 | loop, but it defies simplification into a small test case. |
545 | However, commenting them out has caused ext/List/Util/t/weak.t to fail | |
546 | the last test. */ | |
3cc8d589 NC |
547 | /* |
548 | mad_free(o->op_madprop); | |
549 | o->op_madprop = 0; | |
550 | */ | |
eb8433b7 NC |
551 | #endif |
552 | ||
553 | retry: | |
11343788 | 554 | switch (o->op_type) { |
acb36ea4 | 555 | case OP_NULL: /* Was holding old type, if any. */ |
eb8433b7 | 556 | if (PL_madskills && o->op_targ != OP_NULL) { |
61a59f30 | 557 | o->op_type = (Optype)o->op_targ; |
eb8433b7 NC |
558 | o->op_targ = 0; |
559 | goto retry; | |
560 | } | |
acb36ea4 | 561 | case OP_ENTEREVAL: /* Was holding hints. */ |
acb36ea4 | 562 | o->op_targ = 0; |
a0d0e21e | 563 | break; |
a6006777 | 564 | default: |
ac4c12e7 | 565 | if (!(o->op_flags & OPf_REF) |
0b94c7bb | 566 | || (PL_check[o->op_type] != MEMBER_TO_FPTR(Perl_ck_ftst))) |
a6006777 | 567 | break; |
568 | /* FALL THROUGH */ | |
463ee0b2 | 569 | case OP_GVSV: |
79072805 | 570 | case OP_GV: |
a6006777 | 571 | case OP_AELEMFAST: |
6a077020 DM |
572 | if (! (o->op_type == OP_AELEMFAST && o->op_flags & OPf_SPECIAL)) { |
573 | /* not an OP_PADAV replacement */ | |
350de78d | 574 | #ifdef USE_ITHREADS |
6a077020 DM |
575 | if (cPADOPo->op_padix > 0) { |
576 | /* No GvIN_PAD_off(cGVOPo_gv) here, because other references | |
577 | * may still exist on the pad */ | |
578 | pad_swipe(cPADOPo->op_padix, TRUE); | |
579 | cPADOPo->op_padix = 0; | |
580 | } | |
350de78d | 581 | #else |
6a077020 | 582 | SvREFCNT_dec(cSVOPo->op_sv); |
a0714e2c | 583 | cSVOPo->op_sv = NULL; |
350de78d | 584 | #endif |
6a077020 | 585 | } |
79072805 | 586 | break; |
a1ae71d2 | 587 | case OP_METHOD_NAMED: |
79072805 | 588 | case OP_CONST: |
996c9baa | 589 | case OP_HINTSEVAL: |
11343788 | 590 | SvREFCNT_dec(cSVOPo->op_sv); |
a0714e2c | 591 | cSVOPo->op_sv = NULL; |
3b1c21fa AB |
592 | #ifdef USE_ITHREADS |
593 | /** Bug #15654 | |
594 | Even if op_clear does a pad_free for the target of the op, | |
6a077020 | 595 | pad_free doesn't actually remove the sv that exists in the pad; |
3b1c21fa AB |
596 | instead it lives on. This results in that it could be reused as |
597 | a target later on when the pad was reallocated. | |
598 | **/ | |
599 | if(o->op_targ) { | |
600 | pad_swipe(o->op_targ,1); | |
601 | o->op_targ = 0; | |
602 | } | |
603 | #endif | |
79072805 | 604 | break; |
748a9306 LW |
605 | case OP_GOTO: |
606 | case OP_NEXT: | |
607 | case OP_LAST: | |
608 | case OP_REDO: | |
11343788 | 609 | if (o->op_flags & (OPf_SPECIAL|OPf_STACKED|OPf_KIDS)) |
748a9306 LW |
610 | break; |
611 | /* FALL THROUGH */ | |
a0d0e21e | 612 | case OP_TRANS: |
acb36ea4 | 613 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { |
043e41b8 DM |
614 | #ifdef USE_ITHREADS |
615 | if (cPADOPo->op_padix > 0) { | |
616 | pad_swipe(cPADOPo->op_padix, TRUE); | |
617 | cPADOPo->op_padix = 0; | |
618 | } | |
619 | #else | |
a0ed51b3 | 620 | SvREFCNT_dec(cSVOPo->op_sv); |
a0714e2c | 621 | cSVOPo->op_sv = NULL; |
043e41b8 | 622 | #endif |
acb36ea4 GS |
623 | } |
624 | else { | |
ea71c68d | 625 | PerlMemShared_free(cPVOPo->op_pv); |
bd61b366 | 626 | cPVOPo->op_pv = NULL; |
acb36ea4 | 627 | } |
a0d0e21e LW |
628 | break; |
629 | case OP_SUBST: | |
20e98b0f | 630 | op_free(cPMOPo->op_pmreplrootu.op_pmreplroot); |
971a9dd3 | 631 | goto clear_pmop; |
748a9306 | 632 | case OP_PUSHRE: |
971a9dd3 | 633 | #ifdef USE_ITHREADS |
20e98b0f | 634 | if (cPMOPo->op_pmreplrootu.op_pmtargetoff) { |
dd2155a4 DM |
635 | /* No GvIN_PAD_off here, because other references may still |
636 | * exist on the pad */ | |
20e98b0f | 637 | pad_swipe(cPMOPo->op_pmreplrootu.op_pmtargetoff, TRUE); |
971a9dd3 GS |
638 | } |
639 | #else | |
ad64d0ec | 640 | SvREFCNT_dec(MUTABLE_SV(cPMOPo->op_pmreplrootu.op_pmtargetgv)); |
971a9dd3 GS |
641 | #endif |
642 | /* FALL THROUGH */ | |
a0d0e21e | 643 | case OP_MATCH: |
8782bef2 | 644 | case OP_QR: |
971a9dd3 | 645 | clear_pmop: |
c2b1997a | 646 | forget_pmop(cPMOPo, 1); |
20e98b0f | 647 | cPMOPo->op_pmreplrootu.op_pmreplroot = NULL; |
9cddf794 NC |
648 | /* we use the same protection as the "SAFE" version of the PM_ macros |
649 | * here since sv_clean_all might release some PMOPs | |
5f8cb046 DM |
650 | * after PL_regex_padav has been cleared |
651 | * and the clearing of PL_regex_padav needs to | |
652 | * happen before sv_clean_all | |
653 | */ | |
13137afc AB |
654 | #ifdef USE_ITHREADS |
655 | if(PL_regex_pad) { /* We could be in destruction */ | |
402d2eb1 | 656 | const IV offset = (cPMOPo)->op_pmoffset; |
9cddf794 | 657 | ReREFCNT_dec(PM_GETRE(cPMOPo)); |
402d2eb1 NC |
658 | PL_regex_pad[offset] = &PL_sv_undef; |
659 | sv_catpvn_nomg(PL_regex_pad[0], (const char *)&offset, | |
660 | sizeof(offset)); | |
13137afc | 661 | } |
9cddf794 NC |
662 | #else |
663 | ReREFCNT_dec(PM_GETRE(cPMOPo)); | |
664 | PM_SETRE(cPMOPo, NULL); | |
1eb1540c | 665 | #endif |
13137afc | 666 | |
a0d0e21e | 667 | break; |
79072805 LW |
668 | } |
669 | ||
743e66e6 | 670 | if (o->op_targ > 0) { |
11343788 | 671 | pad_free(o->op_targ); |
743e66e6 GS |
672 | o->op_targ = 0; |
673 | } | |
79072805 LW |
674 | } |
675 | ||
76e3520e | 676 | STATIC void |
3eb57f73 HS |
677 | S_cop_free(pTHX_ COP* cop) |
678 | { | |
7918f24d NC |
679 | PERL_ARGS_ASSERT_COP_FREE; |
680 | ||
05ec9bb3 NIS |
681 | CopFILE_free(cop); |
682 | CopSTASH_free(cop); | |
0453d815 | 683 | if (! specialWARN(cop->cop_warnings)) |
72dc9ed5 | 684 | PerlMemShared_free(cop->cop_warnings); |
c28fe1ec | 685 | Perl_refcounted_he_free(aTHX_ cop->cop_hints_hash); |
3eb57f73 HS |
686 | } |
687 | ||
c2b1997a | 688 | STATIC void |
c4bd3ae5 NC |
689 | S_forget_pmop(pTHX_ PMOP *const o |
690 | #ifdef USE_ITHREADS | |
691 | , U32 flags | |
692 | #endif | |
693 | ) | |
c2b1997a NC |
694 | { |
695 | HV * const pmstash = PmopSTASH(o); | |
7918f24d NC |
696 | |
697 | PERL_ARGS_ASSERT_FORGET_PMOP; | |
698 | ||
c2b1997a | 699 | if (pmstash && !SvIS_FREED(pmstash)) { |
ad64d0ec | 700 | MAGIC * const mg = mg_find((const SV *)pmstash, PERL_MAGIC_symtab); |
c2b1997a NC |
701 | if (mg) { |
702 | PMOP **const array = (PMOP**) mg->mg_ptr; | |
703 | U32 count = mg->mg_len / sizeof(PMOP**); | |
704 | U32 i = count; | |
705 | ||
706 | while (i--) { | |
707 | if (array[i] == o) { | |
708 | /* Found it. Move the entry at the end to overwrite it. */ | |
709 | array[i] = array[--count]; | |
710 | mg->mg_len = count * sizeof(PMOP**); | |
711 | /* Could realloc smaller at this point always, but probably | |
712 | not worth it. Probably worth free()ing if we're the | |
713 | last. */ | |
714 | if(!count) { | |
715 | Safefree(mg->mg_ptr); | |
716 | mg->mg_ptr = NULL; | |
717 | } | |
718 | break; | |
719 | } | |
720 | } | |
721 | } | |
722 | } | |
1cdf7faf NC |
723 | if (PL_curpm == o) |
724 | PL_curpm = NULL; | |
c4bd3ae5 | 725 | #ifdef USE_ITHREADS |
c2b1997a NC |
726 | if (flags) |
727 | PmopSTASH_free(o); | |
c4bd3ae5 | 728 | #endif |
c2b1997a NC |
729 | } |
730 | ||
bfd0ff22 NC |
731 | STATIC void |
732 | S_find_and_forget_pmops(pTHX_ OP *o) | |
733 | { | |
7918f24d NC |
734 | PERL_ARGS_ASSERT_FIND_AND_FORGET_PMOPS; |
735 | ||
bfd0ff22 NC |
736 | if (o->op_flags & OPf_KIDS) { |
737 | OP *kid = cUNOPo->op_first; | |
738 | while (kid) { | |
739 | switch (kid->op_type) { | |
740 | case OP_SUBST: | |
741 | case OP_PUSHRE: | |
742 | case OP_MATCH: | |
743 | case OP_QR: | |
744 | forget_pmop((PMOP*)kid, 0); | |
745 | } | |
746 | find_and_forget_pmops(kid); | |
747 | kid = kid->op_sibling; | |
748 | } | |
749 | } | |
750 | } | |
751 | ||
93c66552 DM |
752 | void |
753 | Perl_op_null(pTHX_ OP *o) | |
8990e307 | 754 | { |
27da23d5 | 755 | dVAR; |
7918f24d NC |
756 | |
757 | PERL_ARGS_ASSERT_OP_NULL; | |
758 | ||
acb36ea4 GS |
759 | if (o->op_type == OP_NULL) |
760 | return; | |
eb8433b7 NC |
761 | if (!PL_madskills) |
762 | op_clear(o); | |
11343788 MB |
763 | o->op_targ = o->op_type; |
764 | o->op_type = OP_NULL; | |
22c35a8c | 765 | o->op_ppaddr = PL_ppaddr[OP_NULL]; |
8990e307 LW |
766 | } |
767 | ||
4026c95a SH |
768 | void |
769 | Perl_op_refcnt_lock(pTHX) | |
770 | { | |
27da23d5 | 771 | dVAR; |
96a5add6 | 772 | PERL_UNUSED_CONTEXT; |
4026c95a SH |
773 | OP_REFCNT_LOCK; |
774 | } | |
775 | ||
776 | void | |
777 | Perl_op_refcnt_unlock(pTHX) | |
778 | { | |
27da23d5 | 779 | dVAR; |
96a5add6 | 780 | PERL_UNUSED_CONTEXT; |
4026c95a SH |
781 | OP_REFCNT_UNLOCK; |
782 | } | |
783 | ||
79072805 LW |
784 | /* Contextualizers */ |
785 | ||
463ee0b2 | 786 | #define LINKLIST(o) ((o)->op_next ? (o)->op_next : linklist((OP*)o)) |
79072805 | 787 | |
1f676739 | 788 | static OP * |
12e93c28 | 789 | S_linklist(pTHX_ OP *o) |
79072805 | 790 | { |
3edf23ff | 791 | OP *first; |
79072805 | 792 | |
7918f24d NC |
793 | PERL_ARGS_ASSERT_LINKLIST; |
794 | ||
11343788 MB |
795 | if (o->op_next) |
796 | return o->op_next; | |
79072805 LW |
797 | |
798 | /* establish postfix order */ | |
3edf23ff AL |
799 | first = cUNOPo->op_first; |
800 | if (first) { | |
6867be6d | 801 | register OP *kid; |
3edf23ff AL |
802 | o->op_next = LINKLIST(first); |
803 | kid = first; | |
804 | for (;;) { | |
805 | if (kid->op_sibling) { | |
79072805 | 806 | kid->op_next = LINKLIST(kid->op_sibling); |
3edf23ff AL |
807 | kid = kid->op_sibling; |
808 | } else { | |
11343788 | 809 | kid->op_next = o; |
3edf23ff AL |
810 | break; |
811 | } | |
79072805 LW |
812 | } |
813 | } | |
814 | else | |
11343788 | 815 | o->op_next = o; |
79072805 | 816 | |
11343788 | 817 | return o->op_next; |
79072805 LW |
818 | } |
819 | ||
1f676739 | 820 | static OP * |
2dd5337b | 821 | S_scalarkids(pTHX_ OP *o) |
79072805 | 822 | { |
11343788 | 823 | if (o && o->op_flags & OPf_KIDS) { |
bfed75c6 | 824 | OP *kid; |
11343788 | 825 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
826 | scalar(kid); |
827 | } | |
11343788 | 828 | return o; |
79072805 LW |
829 | } |
830 | ||
76e3520e | 831 | STATIC OP * |
cea2e8a9 | 832 | S_scalarboolean(pTHX_ OP *o) |
8990e307 | 833 | { |
97aff369 | 834 | dVAR; |
7918f24d NC |
835 | |
836 | PERL_ARGS_ASSERT_SCALARBOOLEAN; | |
837 | ||
d008e5eb | 838 | if (o->op_type == OP_SASSIGN && cBINOPo->op_first->op_type == OP_CONST) { |
d008e5eb | 839 | if (ckWARN(WARN_SYNTAX)) { |
6867be6d | 840 | const line_t oldline = CopLINE(PL_curcop); |
a0d0e21e | 841 | |
53a7735b DM |
842 | if (PL_parser && PL_parser->copline != NOLINE) |
843 | CopLINE_set(PL_curcop, PL_parser->copline); | |
9014280d | 844 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Found = in conditional, should be =="); |
57843af0 | 845 | CopLINE_set(PL_curcop, oldline); |
d008e5eb | 846 | } |
a0d0e21e | 847 | } |
11343788 | 848 | return scalar(o); |
8990e307 LW |
849 | } |
850 | ||
851 | OP * | |
864dbfa3 | 852 | Perl_scalar(pTHX_ OP *o) |
79072805 | 853 | { |
27da23d5 | 854 | dVAR; |
79072805 LW |
855 | OP *kid; |
856 | ||
a0d0e21e | 857 | /* assumes no premature commitment */ |
13765c85 DM |
858 | if (!o || (PL_parser && PL_parser->error_count) |
859 | || (o->op_flags & OPf_WANT) | |
5dc0d613 | 860 | || o->op_type == OP_RETURN) |
7e363e51 | 861 | { |
11343788 | 862 | return o; |
7e363e51 | 863 | } |
79072805 | 864 | |
5dc0d613 | 865 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_SCALAR; |
79072805 | 866 | |
11343788 | 867 | switch (o->op_type) { |
79072805 | 868 | case OP_REPEAT: |
11343788 | 869 | scalar(cBINOPo->op_first); |
8990e307 | 870 | break; |
79072805 LW |
871 | case OP_OR: |
872 | case OP_AND: | |
873 | case OP_COND_EXPR: | |
11343788 | 874 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
8990e307 | 875 | scalar(kid); |
79072805 | 876 | break; |
a0d0e21e | 877 | case OP_SPLIT: |
11343788 | 878 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
20e98b0f | 879 | if (!kPMOP->op_pmreplrootu.op_pmreplroot) |
12bcd1a6 | 880 | deprecate_old("implicit split to @_"); |
a0d0e21e LW |
881 | } |
882 | /* FALL THROUGH */ | |
79072805 | 883 | case OP_MATCH: |
8782bef2 | 884 | case OP_QR: |
79072805 LW |
885 | case OP_SUBST: |
886 | case OP_NULL: | |
8990e307 | 887 | default: |
11343788 MB |
888 | if (o->op_flags & OPf_KIDS) { |
889 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) | |
8990e307 LW |
890 | scalar(kid); |
891 | } | |
79072805 LW |
892 | break; |
893 | case OP_LEAVE: | |
894 | case OP_LEAVETRY: | |
5dc0d613 | 895 | kid = cLISTOPo->op_first; |
54310121 | 896 | scalar(kid); |
155aba94 | 897 | while ((kid = kid->op_sibling)) { |
54310121 | 898 | if (kid->op_sibling) |
899 | scalarvoid(kid); | |
900 | else | |
901 | scalar(kid); | |
902 | } | |
11206fdd | 903 | PL_curcop = &PL_compiling; |
54310121 | 904 | break; |
748a9306 | 905 | case OP_SCOPE: |
79072805 | 906 | case OP_LINESEQ: |
8990e307 | 907 | case OP_LIST: |
11343788 | 908 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
909 | if (kid->op_sibling) |
910 | scalarvoid(kid); | |
911 | else | |
912 | scalar(kid); | |
913 | } | |
11206fdd | 914 | PL_curcop = &PL_compiling; |
79072805 | 915 | break; |
a801c63c RGS |
916 | case OP_SORT: |
917 | if (ckWARN(WARN_VOID)) | |
9014280d | 918 | Perl_warner(aTHX_ packWARN(WARN_VOID), "Useless use of sort in scalar context"); |
553e7bb0 | 919 | break; |
79072805 | 920 | } |
11343788 | 921 | return o; |
79072805 LW |
922 | } |
923 | ||
924 | OP * | |
864dbfa3 | 925 | Perl_scalarvoid(pTHX_ OP *o) |
79072805 | 926 | { |
27da23d5 | 927 | dVAR; |
79072805 | 928 | OP *kid; |
c445ea15 | 929 | const char* useless = NULL; |
8990e307 | 930 | SV* sv; |
2ebea0a1 GS |
931 | U8 want; |
932 | ||
7918f24d NC |
933 | PERL_ARGS_ASSERT_SCALARVOID; |
934 | ||
eb8433b7 NC |
935 | /* trailing mad null ops don't count as "there" for void processing */ |
936 | if (PL_madskills && | |
937 | o->op_type != OP_NULL && | |
938 | o->op_sibling && | |
939 | o->op_sibling->op_type == OP_NULL) | |
940 | { | |
941 | OP *sib; | |
942 | for (sib = o->op_sibling; | |
943 | sib && sib->op_type == OP_NULL; | |
944 | sib = sib->op_sibling) ; | |
945 | ||
946 | if (!sib) | |
947 | return o; | |
948 | } | |
949 | ||
acb36ea4 | 950 | if (o->op_type == OP_NEXTSTATE |
acb36ea4 GS |
951 | || o->op_type == OP_DBSTATE |
952 | || (o->op_type == OP_NULL && (o->op_targ == OP_NEXTSTATE | |
acb36ea4 | 953 | || o->op_targ == OP_DBSTATE))) |
2ebea0a1 | 954 | PL_curcop = (COP*)o; /* for warning below */ |
79072805 | 955 | |
54310121 | 956 | /* assumes no premature commitment */ |
2ebea0a1 | 957 | want = o->op_flags & OPf_WANT; |
13765c85 DM |
958 | if ((want && want != OPf_WANT_SCALAR) |
959 | || (PL_parser && PL_parser->error_count) | |
5dc0d613 | 960 | || o->op_type == OP_RETURN) |
7e363e51 | 961 | { |
11343788 | 962 | return o; |
7e363e51 | 963 | } |
79072805 | 964 | |
b162f9ea | 965 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
966 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
967 | { | |
b162f9ea | 968 | return scalar(o); /* As if inside SASSIGN */ |
7e363e51 | 969 | } |
1c846c1f | 970 | |
5dc0d613 | 971 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_VOID; |
79072805 | 972 | |
11343788 | 973 | switch (o->op_type) { |
79072805 | 974 | default: |
22c35a8c | 975 | if (!(PL_opargs[o->op_type] & OA_FOLDCONST)) |
8990e307 | 976 | break; |
36477c24 | 977 | /* FALL THROUGH */ |
978 | case OP_REPEAT: | |
11343788 | 979 | if (o->op_flags & OPf_STACKED) |
8990e307 | 980 | break; |
5d82c453 GA |
981 | goto func_ops; |
982 | case OP_SUBSTR: | |
983 | if (o->op_private == 4) | |
984 | break; | |
8990e307 LW |
985 | /* FALL THROUGH */ |
986 | case OP_GVSV: | |
987 | case OP_WANTARRAY: | |
988 | case OP_GV: | |
74295f0b | 989 | case OP_SMARTMATCH: |
8990e307 LW |
990 | case OP_PADSV: |
991 | case OP_PADAV: | |
992 | case OP_PADHV: | |
993 | case OP_PADANY: | |
994 | case OP_AV2ARYLEN: | |
8990e307 | 995 | case OP_REF: |
a0d0e21e LW |
996 | case OP_REFGEN: |
997 | case OP_SREFGEN: | |
8990e307 LW |
998 | case OP_DEFINED: |
999 | case OP_HEX: | |
1000 | case OP_OCT: | |
1001 | case OP_LENGTH: | |
8990e307 LW |
1002 | case OP_VEC: |
1003 | case OP_INDEX: | |
1004 | case OP_RINDEX: | |
1005 | case OP_SPRINTF: | |
1006 | case OP_AELEM: | |
1007 | case OP_AELEMFAST: | |
1008 | case OP_ASLICE: | |
8990e307 LW |
1009 | case OP_HELEM: |
1010 | case OP_HSLICE: | |
1011 | case OP_UNPACK: | |
1012 | case OP_PACK: | |
8990e307 LW |
1013 | case OP_JOIN: |
1014 | case OP_LSLICE: | |
1015 | case OP_ANONLIST: | |
1016 | case OP_ANONHASH: | |
1017 | case OP_SORT: | |
1018 | case OP_REVERSE: | |
1019 | case OP_RANGE: | |
1020 | case OP_FLIP: | |
1021 | case OP_FLOP: | |
1022 | case OP_CALLER: | |
1023 | case OP_FILENO: | |
1024 | case OP_EOF: | |
1025 | case OP_TELL: | |
1026 | case OP_GETSOCKNAME: | |
1027 | case OP_GETPEERNAME: | |
1028 | case OP_READLINK: | |
1029 | case OP_TELLDIR: | |
1030 | case OP_GETPPID: | |
1031 | case OP_GETPGRP: | |
1032 | case OP_GETPRIORITY: | |
1033 | case OP_TIME: | |
1034 | case OP_TMS: | |
1035 | case OP_LOCALTIME: | |
1036 | case OP_GMTIME: | |
1037 | case OP_GHBYNAME: | |
1038 | case OP_GHBYADDR: | |
1039 | case OP_GHOSTENT: | |
1040 | case OP_GNBYNAME: | |
1041 | case OP_GNBYADDR: | |
1042 | case OP_GNETENT: | |
1043 | case OP_GPBYNAME: | |
1044 | case OP_GPBYNUMBER: | |
1045 | case OP_GPROTOENT: | |
1046 | case OP_GSBYNAME: | |
1047 | case OP_GSBYPORT: | |
1048 | case OP_GSERVENT: | |
1049 | case OP_GPWNAM: | |
1050 | case OP_GPWUID: | |
1051 | case OP_GGRNAM: | |
1052 | case OP_GGRGID: | |
1053 | case OP_GETLOGIN: | |
78e1b766 | 1054 | case OP_PROTOTYPE: |
5d82c453 | 1055 | func_ops: |
64aac5a9 | 1056 | if (!(o->op_private & (OPpLVAL_INTRO|OPpOUR_INTRO))) |
74295f0b | 1057 | /* Otherwise it's "Useless use of grep iterator" */ |
f5df4782 | 1058 | useless = OP_DESC(o); |
8990e307 LW |
1059 | break; |
1060 | ||
9f82cd5f YST |
1061 | case OP_NOT: |
1062 | kid = cUNOPo->op_first; | |
1063 | if (kid->op_type != OP_MATCH && kid->op_type != OP_SUBST && | |
1064 | kid->op_type != OP_TRANS) { | |
1065 | goto func_ops; | |
1066 | } | |
1067 | useless = "negative pattern binding (!~)"; | |
1068 | break; | |
1069 | ||
8990e307 LW |
1070 | case OP_RV2GV: |
1071 | case OP_RV2SV: | |
1072 | case OP_RV2AV: | |
1073 | case OP_RV2HV: | |
192587c2 | 1074 | if (!(o->op_private & (OPpLVAL_INTRO|OPpOUR_INTRO)) && |
11343788 | 1075 | (!o->op_sibling || o->op_sibling->op_type != OP_READLINE)) |
8990e307 LW |
1076 | useless = "a variable"; |
1077 | break; | |
79072805 LW |
1078 | |
1079 | case OP_CONST: | |
7766f137 | 1080 | sv = cSVOPo_sv; |
7a52d87a GS |
1081 | if (cSVOPo->op_private & OPpCONST_STRICT) |
1082 | no_bareword_allowed(o); | |
1083 | else { | |
d008e5eb | 1084 | if (ckWARN(WARN_VOID)) { |
fa01e093 RGS |
1085 | if (SvOK(sv)) { |
1086 | SV* msv = sv_2mortal(Perl_newSVpvf(aTHX_ | |
1087 | "a constant (%"SVf")", sv)); | |
1088 | useless = SvPV_nolen(msv); | |
1089 | } | |
1090 | else | |
1091 | useless = "a constant (undef)"; | |
2e0ae2d3 | 1092 | if (o->op_private & OPpCONST_ARYBASE) |
d4c19fe8 | 1093 | useless = NULL; |
e7fec78e | 1094 | /* don't warn on optimised away booleans, eg |
b5a930ec | 1095 | * use constant Foo, 5; Foo || print; */ |
e7fec78e | 1096 | if (cSVOPo->op_private & OPpCONST_SHORTCIRCUIT) |
d4c19fe8 | 1097 | useless = NULL; |
960b4253 MG |
1098 | /* the constants 0 and 1 are permitted as they are |
1099 | conventionally used as dummies in constructs like | |
1100 | 1 while some_condition_with_side_effects; */ | |
e7fec78e | 1101 | else if (SvNIOK(sv) && (SvNV(sv) == 0.0 || SvNV(sv) == 1.0)) |
d4c19fe8 | 1102 | useless = NULL; |
d008e5eb | 1103 | else if (SvPOK(sv)) { |
a52fe3ac A |
1104 | /* perl4's way of mixing documentation and code |
1105 | (before the invention of POD) was based on a | |
1106 | trick to mix nroff and perl code. The trick was | |
1107 | built upon these three nroff macros being used in | |
1108 | void context. The pink camel has the details in | |
1109 | the script wrapman near page 319. */ | |
6136c704 AL |
1110 | const char * const maybe_macro = SvPVX_const(sv); |
1111 | if (strnEQ(maybe_macro, "di", 2) || | |
1112 | strnEQ(maybe_macro, "ds", 2) || | |
1113 | strnEQ(maybe_macro, "ig", 2)) | |
d4c19fe8 | 1114 | useless = NULL; |
d008e5eb | 1115 | } |
8990e307 LW |
1116 | } |
1117 | } | |
93c66552 | 1118 | op_null(o); /* don't execute or even remember it */ |
79072805 LW |
1119 | break; |
1120 | ||
1121 | case OP_POSTINC: | |
11343788 | 1122 | o->op_type = OP_PREINC; /* pre-increment is faster */ |
22c35a8c | 1123 | o->op_ppaddr = PL_ppaddr[OP_PREINC]; |
79072805 LW |
1124 | break; |
1125 | ||
1126 | case OP_POSTDEC: | |
11343788 | 1127 | o->op_type = OP_PREDEC; /* pre-decrement is faster */ |
22c35a8c | 1128 | o->op_ppaddr = PL_ppaddr[OP_PREDEC]; |
79072805 LW |
1129 | break; |
1130 | ||
679d6c4e HS |
1131 | case OP_I_POSTINC: |
1132 | o->op_type = OP_I_PREINC; /* pre-increment is faster */ | |
1133 | o->op_ppaddr = PL_ppaddr[OP_I_PREINC]; | |
1134 | break; | |
1135 | ||
1136 | case OP_I_POSTDEC: | |
1137 | o->op_type = OP_I_PREDEC; /* pre-decrement is faster */ | |
1138 | o->op_ppaddr = PL_ppaddr[OP_I_PREDEC]; | |
1139 | break; | |
1140 | ||
79072805 LW |
1141 | case OP_OR: |
1142 | case OP_AND: | |
edbe35ea VP |
1143 | kid = cLOGOPo->op_first; |
1144 | if (kid->op_type == OP_NOT | |
1145 | && (kid->op_flags & OPf_KIDS) | |
1146 | && !PL_madskills) { | |
1147 | if (o->op_type == OP_AND) { | |
1148 | o->op_type = OP_OR; | |
1149 | o->op_ppaddr = PL_ppaddr[OP_OR]; | |
1150 | } else { | |
1151 | o->op_type = OP_AND; | |
1152 | o->op_ppaddr = PL_ppaddr[OP_AND]; | |
1153 | } | |
1154 | op_null(kid); | |
1155 | } | |
1156 | ||
c963b151 | 1157 | case OP_DOR: |
79072805 | 1158 | case OP_COND_EXPR: |
0d863452 RH |
1159 | case OP_ENTERGIVEN: |
1160 | case OP_ENTERWHEN: | |
11343788 | 1161 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
1162 | scalarvoid(kid); |
1163 | break; | |
5aabfad6 | 1164 | |
a0d0e21e | 1165 | case OP_NULL: |
11343788 | 1166 | if (o->op_flags & OPf_STACKED) |
a0d0e21e | 1167 | break; |
5aabfad6 | 1168 | /* FALL THROUGH */ |
2ebea0a1 GS |
1169 | case OP_NEXTSTATE: |
1170 | case OP_DBSTATE: | |
79072805 LW |
1171 | case OP_ENTERTRY: |
1172 | case OP_ENTER: | |
11343788 | 1173 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1174 | break; |
54310121 | 1175 | /* FALL THROUGH */ |
463ee0b2 | 1176 | case OP_SCOPE: |
79072805 LW |
1177 | case OP_LEAVE: |
1178 | case OP_LEAVETRY: | |
a0d0e21e | 1179 | case OP_LEAVELOOP: |
79072805 | 1180 | case OP_LINESEQ: |
79072805 | 1181 | case OP_LIST: |
0d863452 RH |
1182 | case OP_LEAVEGIVEN: |
1183 | case OP_LEAVEWHEN: | |
11343788 | 1184 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
1185 | scalarvoid(kid); |
1186 | break; | |
c90c0ff4 | 1187 | case OP_ENTEREVAL: |
5196be3e | 1188 | scalarkids(o); |
c90c0ff4 | 1189 | break; |
5aabfad6 | 1190 | case OP_REQUIRE: |
c90c0ff4 | 1191 | /* all requires must return a boolean value */ |
5196be3e | 1192 | o->op_flags &= ~OPf_WANT; |
d6483035 GS |
1193 | /* FALL THROUGH */ |
1194 | case OP_SCALAR: | |
5196be3e | 1195 | return scalar(o); |
a0d0e21e | 1196 | case OP_SPLIT: |
11343788 | 1197 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
20e98b0f | 1198 | if (!kPMOP->op_pmreplrootu.op_pmreplroot) |
12bcd1a6 | 1199 | deprecate_old("implicit split to @_"); |
a0d0e21e LW |
1200 | } |
1201 | break; | |
79072805 | 1202 | } |
411caa50 | 1203 | if (useless && ckWARN(WARN_VOID)) |
9014280d | 1204 | Perl_warner(aTHX_ packWARN(WARN_VOID), "Useless use of %s in void context", useless); |
11343788 | 1205 | return o; |
79072805 LW |
1206 | } |
1207 | ||
1f676739 | 1208 | static OP * |
412da003 | 1209 | S_listkids(pTHX_ OP *o) |
79072805 | 1210 | { |
11343788 | 1211 | if (o && o->op_flags & OPf_KIDS) { |
6867be6d | 1212 | OP *kid; |
11343788 | 1213 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
1214 | list(kid); |
1215 | } | |
11343788 | 1216 | return o; |
79072805 LW |
1217 | } |
1218 | ||
1219 | OP * | |
864dbfa3 | 1220 | Perl_list(pTHX_ OP *o) |
79072805 | 1221 | { |
27da23d5 | 1222 | dVAR; |
79072805 LW |
1223 | OP *kid; |
1224 | ||
a0d0e21e | 1225 | /* assumes no premature commitment */ |
13765c85 DM |
1226 | if (!o || (o->op_flags & OPf_WANT) |
1227 | || (PL_parser && PL_parser->error_count) | |
5dc0d613 | 1228 | || o->op_type == OP_RETURN) |
7e363e51 | 1229 | { |
11343788 | 1230 | return o; |
7e363e51 | 1231 | } |
79072805 | 1232 | |
b162f9ea | 1233 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
1234 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
1235 | { | |
b162f9ea | 1236 | return o; /* As if inside SASSIGN */ |
7e363e51 | 1237 | } |
1c846c1f | 1238 | |
5dc0d613 | 1239 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_LIST; |
79072805 | 1240 | |
11343788 | 1241 | switch (o->op_type) { |
79072805 LW |
1242 | case OP_FLOP: |
1243 | case OP_REPEAT: | |
11343788 | 1244 | list(cBINOPo->op_first); |
79072805 LW |
1245 | break; |
1246 | case OP_OR: | |
1247 | case OP_AND: | |
1248 | case OP_COND_EXPR: | |
11343788 | 1249 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
1250 | list(kid); |
1251 | break; | |
1252 | default: | |
1253 | case OP_MATCH: | |
8782bef2 | 1254 | case OP_QR: |
79072805 LW |
1255 | case OP_SUBST: |
1256 | case OP_NULL: | |
11343788 | 1257 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1258 | break; |
11343788 MB |
1259 | if (!o->op_next && cUNOPo->op_first->op_type == OP_FLOP) { |
1260 | list(cBINOPo->op_first); | |
1261 | return gen_constant_list(o); | |
79072805 LW |
1262 | } |
1263 | case OP_LIST: | |
11343788 | 1264 | listkids(o); |
79072805 LW |
1265 | break; |
1266 | case OP_LEAVE: | |
1267 | case OP_LEAVETRY: | |
5dc0d613 | 1268 | kid = cLISTOPo->op_first; |
54310121 | 1269 | list(kid); |
155aba94 | 1270 | while ((kid = kid->op_sibling)) { |
54310121 | 1271 | if (kid->op_sibling) |
1272 | scalarvoid(kid); | |
1273 | else | |
1274 | list(kid); | |
1275 | } | |
11206fdd | 1276 | PL_curcop = &PL_compiling; |
54310121 | 1277 | break; |
748a9306 | 1278 | case OP_SCOPE: |
79072805 | 1279 | case OP_LINESEQ: |
11343788 | 1280 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
1281 | if (kid->op_sibling) |
1282 | scalarvoid(kid); | |
1283 | else | |
1284 | list(kid); | |
1285 | } | |
11206fdd | 1286 | PL_curcop = &PL_compiling; |
79072805 | 1287 | break; |
c90c0ff4 | 1288 | case OP_REQUIRE: |
1289 | /* all requires must return a boolean value */ | |
5196be3e MB |
1290 | o->op_flags &= ~OPf_WANT; |
1291 | return scalar(o); | |
79072805 | 1292 | } |
11343788 | 1293 | return o; |
79072805 LW |
1294 | } |
1295 | ||
1f676739 | 1296 | static OP * |
2dd5337b | 1297 | S_scalarseq(pTHX_ OP *o) |
79072805 | 1298 | { |
97aff369 | 1299 | dVAR; |
11343788 | 1300 | if (o) { |
1496a290 AL |
1301 | const OPCODE type = o->op_type; |
1302 | ||
1303 | if (type == OP_LINESEQ || type == OP_SCOPE || | |
1304 | type == OP_LEAVE || type == OP_LEAVETRY) | |
463ee0b2 | 1305 | { |
6867be6d | 1306 | OP *kid; |
11343788 | 1307 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
ed6116ce | 1308 | if (kid->op_sibling) { |
463ee0b2 | 1309 | scalarvoid(kid); |
ed6116ce | 1310 | } |
463ee0b2 | 1311 | } |
3280af22 | 1312 | PL_curcop = &PL_compiling; |
79072805 | 1313 | } |
11343788 | 1314 | o->op_flags &= ~OPf_PARENS; |
3280af22 | 1315 | if (PL_hints & HINT_BLOCK_SCOPE) |
11343788 | 1316 | o->op_flags |= OPf_PARENS; |
79072805 | 1317 | } |
8990e307 | 1318 | else |
11343788 MB |
1319 | o = newOP(OP_STUB, 0); |
1320 | return o; | |
79072805 LW |
1321 | } |
1322 | ||
76e3520e | 1323 | STATIC OP * |
cea2e8a9 | 1324 | S_modkids(pTHX_ OP *o, I32 type) |
79072805 | 1325 | { |
11343788 | 1326 | if (o && o->op_flags & OPf_KIDS) { |
6867be6d | 1327 | OP *kid; |
11343788 | 1328 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 | 1329 | mod(kid, type); |
79072805 | 1330 | } |
11343788 | 1331 | return o; |
79072805 LW |
1332 | } |
1333 | ||
ff7298cb | 1334 | /* Propagate lvalue ("modifiable") context to an op and its children. |
ddeae0f1 DM |
1335 | * 'type' represents the context type, roughly based on the type of op that |
1336 | * would do the modifying, although local() is represented by OP_NULL. | |
1337 | * It's responsible for detecting things that can't be modified, flag | |
1338 | * things that need to behave specially in an lvalue context (e.g., "$$x = 5" | |
1339 | * might have to vivify a reference in $x), and so on. | |
1340 | * | |
1341 | * For example, "$a+1 = 2" would cause mod() to be called with o being | |
1342 | * OP_ADD and type being OP_SASSIGN, and would output an error. | |
1343 | */ | |
1344 | ||
79072805 | 1345 | OP * |
864dbfa3 | 1346 | Perl_mod(pTHX_ OP *o, I32 type) |
79072805 | 1347 | { |
27da23d5 | 1348 | dVAR; |
79072805 | 1349 | OP *kid; |
ddeae0f1 DM |
1350 | /* -1 = error on localize, 0 = ignore localize, 1 = ok to localize */ |
1351 | int localize = -1; | |
79072805 | 1352 | |
13765c85 | 1353 | if (!o || (PL_parser && PL_parser->error_count)) |
11343788 | 1354 | return o; |
79072805 | 1355 | |
b162f9ea | 1356 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
1357 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
1358 | { | |
b162f9ea | 1359 | return o; |
7e363e51 | 1360 | } |
1c846c1f | 1361 | |
11343788 | 1362 | switch (o->op_type) { |
68dc0745 | 1363 | case OP_UNDEF: |
ddeae0f1 | 1364 | localize = 0; |
3280af22 | 1365 | PL_modcount++; |
5dc0d613 | 1366 | return o; |
a0d0e21e | 1367 | case OP_CONST: |
2e0ae2d3 | 1368 | if (!(o->op_private & OPpCONST_ARYBASE)) |
a0d0e21e | 1369 | goto nomod; |
54dc0f91 | 1370 | localize = 0; |
3280af22 | 1371 | if (PL_eval_start && PL_eval_start->op_type == OP_CONST) { |
fc15ae8f NC |
1372 | CopARYBASE_set(&PL_compiling, |
1373 | (I32)SvIV(cSVOPx(PL_eval_start)->op_sv)); | |
3280af22 | 1374 | PL_eval_start = 0; |
a0d0e21e LW |
1375 | } |
1376 | else if (!type) { | |
fc15ae8f NC |
1377 | SAVECOPARYBASE(&PL_compiling); |
1378 | CopARYBASE_set(&PL_compiling, 0); | |
a0d0e21e LW |
1379 | } |
1380 | else if (type == OP_REFGEN) | |
1381 | goto nomod; | |
1382 | else | |
cea2e8a9 | 1383 | Perl_croak(aTHX_ "That use of $[ is unsupported"); |
a0d0e21e | 1384 | break; |
5f05dabc | 1385 | case OP_STUB: |
58bde88d | 1386 | if ((o->op_flags & OPf_PARENS) || PL_madskills) |
5f05dabc | 1387 | break; |
1388 | goto nomod; | |
a0d0e21e LW |
1389 | case OP_ENTERSUB: |
1390 | if ((type == OP_UNDEF || type == OP_REFGEN) && | |
11343788 MB |
1391 | !(o->op_flags & OPf_STACKED)) { |
1392 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
e26df76a NC |
1393 | /* The default is to set op_private to the number of children, |
1394 | which for a UNOP such as RV2CV is always 1. And w're using | |
1395 | the bit for a flag in RV2CV, so we need it clear. */ | |
1396 | o->op_private &= ~1; | |
22c35a8c | 1397 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 | 1398 | assert(cUNOPo->op_first->op_type == OP_NULL); |
93c66552 | 1399 | op_null(((LISTOP*)cUNOPo->op_first)->op_first);/* disable pushmark */ |
79072805 LW |
1400 | break; |
1401 | } | |
95f0a2f1 SB |
1402 | else if (o->op_private & OPpENTERSUB_NOMOD) |
1403 | return o; | |
cd06dffe GS |
1404 | else { /* lvalue subroutine call */ |
1405 | o->op_private |= OPpLVAL_INTRO; | |
e6438c1a | 1406 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
4978d6d9 | 1407 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) { |
cd06dffe GS |
1408 | /* Backward compatibility mode: */ |
1409 | o->op_private |= OPpENTERSUB_INARGS; | |
1410 | break; | |
1411 | } | |
1412 | else { /* Compile-time error message: */ | |
1413 | OP *kid = cUNOPo->op_first; | |
1414 | CV *cv; | |
1415 | OP *okid; | |
1416 | ||
3ea285d1 AL |
1417 | if (kid->op_type != OP_PUSHMARK) { |
1418 | if (kid->op_type != OP_NULL || kid->op_targ != OP_LIST) | |
1419 | Perl_croak(aTHX_ | |
1420 | "panic: unexpected lvalue entersub " | |
1421 | "args: type/targ %ld:%"UVuf, | |
1422 | (long)kid->op_type, (UV)kid->op_targ); | |
1423 | kid = kLISTOP->op_first; | |
1424 | } | |
cd06dffe GS |
1425 | while (kid->op_sibling) |
1426 | kid = kid->op_sibling; | |
1427 | if (!(kid->op_type == OP_NULL && kid->op_targ == OP_RV2CV)) { | |
1428 | /* Indirect call */ | |
1429 | if (kid->op_type == OP_METHOD_NAMED | |
1430 | || kid->op_type == OP_METHOD) | |
1431 | { | |
87d7fd28 | 1432 | UNOP *newop; |
b2ffa427 | 1433 | |
87d7fd28 | 1434 | NewOp(1101, newop, 1, UNOP); |
349fd7b7 GS |
1435 | newop->op_type = OP_RV2CV; |
1436 | newop->op_ppaddr = PL_ppaddr[OP_RV2CV]; | |
5f66b61c | 1437 | newop->op_first = NULL; |
87d7fd28 GS |
1438 | newop->op_next = (OP*)newop; |
1439 | kid->op_sibling = (OP*)newop; | |
349fd7b7 | 1440 | newop->op_private |= OPpLVAL_INTRO; |
e26df76a | 1441 | newop->op_private &= ~1; |
cd06dffe GS |
1442 | break; |
1443 | } | |
b2ffa427 | 1444 | |
cd06dffe GS |
1445 | if (kid->op_type != OP_RV2CV) |
1446 | Perl_croak(aTHX_ | |
1447 | "panic: unexpected lvalue entersub " | |
55140b79 | 1448 | "entry via type/targ %ld:%"UVuf, |
3d811634 | 1449 | (long)kid->op_type, (UV)kid->op_targ); |
cd06dffe GS |
1450 | kid->op_private |= OPpLVAL_INTRO; |
1451 | break; /* Postpone until runtime */ | |
1452 | } | |
b2ffa427 NIS |
1453 | |
1454 | okid = kid; | |
cd06dffe GS |
1455 | kid = kUNOP->op_first; |
1456 | if (kid->op_type == OP_NULL && kid->op_targ == OP_RV2SV) | |
1457 | kid = kUNOP->op_first; | |
b2ffa427 | 1458 | if (kid->op_type == OP_NULL) |
cd06dffe GS |
1459 | Perl_croak(aTHX_ |
1460 | "Unexpected constant lvalue entersub " | |
55140b79 | 1461 | "entry via type/targ %ld:%"UVuf, |
3d811634 | 1462 | (long)kid->op_type, (UV)kid->op_targ); |
cd06dffe GS |
1463 | if (kid->op_type != OP_GV) { |
1464 | /* Restore RV2CV to check lvalueness */ | |
1465 | restore_2cv: | |
1466 | if (kid->op_next && kid->op_next != kid) { /* Happens? */ | |
1467 | okid->op_next = kid->op_next; | |
1468 | kid->op_next = okid; | |
1469 | } | |
1470 | else | |
5f66b61c | 1471 | okid->op_next = NULL; |
cd06dffe GS |
1472 | okid->op_type = OP_RV2CV; |
1473 | okid->op_targ = 0; | |
1474 | okid->op_ppaddr = PL_ppaddr[OP_RV2CV]; | |
1475 | okid->op_private |= OPpLVAL_INTRO; | |
e26df76a | 1476 | okid->op_private &= ~1; |
cd06dffe GS |
1477 | break; |
1478 | } | |
b2ffa427 | 1479 | |
638eceb6 | 1480 | cv = GvCV(kGVOP_gv); |
1c846c1f | 1481 | if (!cv) |
cd06dffe GS |
1482 | goto restore_2cv; |
1483 | if (CvLVALUE(cv)) | |
1484 | break; | |
1485 | } | |
1486 | } | |
79072805 LW |
1487 | /* FALL THROUGH */ |
1488 | default: | |
a0d0e21e | 1489 | nomod: |
6fbb66d6 NC |
1490 | /* grep, foreach, subcalls, refgen */ |
1491 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) | |
a0d0e21e | 1492 | break; |
cea2e8a9 | 1493 | yyerror(Perl_form(aTHX_ "Can't modify %s in %s", |
638bc118 | 1494 | (o->op_type == OP_NULL && (o->op_flags & OPf_SPECIAL) |
cd06dffe GS |
1495 | ? "do block" |
1496 | : (o->op_type == OP_ENTERSUB | |
1497 | ? "non-lvalue subroutine call" | |
53e06cf0 | 1498 | : OP_DESC(o))), |
22c35a8c | 1499 | type ? PL_op_desc[type] : "local")); |
11343788 | 1500 | return o; |
79072805 | 1501 | |
a0d0e21e LW |
1502 | case OP_PREINC: |
1503 | case OP_PREDEC: | |
1504 | case OP_POW: | |
1505 | case OP_MULTIPLY: | |
1506 | case OP_DIVIDE: | |
1507 | case OP_MODULO: | |
1508 | case OP_REPEAT: | |
1509 | case OP_ADD: | |
1510 | case OP_SUBTRACT: | |
1511 | case OP_CONCAT: | |
1512 | case OP_LEFT_SHIFT: | |
1513 | case OP_RIGHT_SHIFT: | |
1514 | case OP_BIT_AND: | |
1515 | case OP_BIT_XOR: | |
1516 | case OP_BIT_OR: | |
1517 | case OP_I_MULTIPLY: | |
1518 | case OP_I_DIVIDE: | |
1519 | case OP_I_MODULO: | |
1520 | case OP_I_ADD: | |
1521 | case OP_I_SUBTRACT: | |
11343788 | 1522 | if (!(o->op_flags & OPf_STACKED)) |
a0d0e21e | 1523 | goto nomod; |
3280af22 | 1524 | PL_modcount++; |
a0d0e21e | 1525 | break; |
b2ffa427 | 1526 | |
79072805 | 1527 | case OP_COND_EXPR: |
ddeae0f1 | 1528 | localize = 1; |
11343788 | 1529 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 | 1530 | mod(kid, type); |
79072805 LW |
1531 | break; |
1532 | ||
1533 | case OP_RV2AV: | |
1534 | case OP_RV2HV: | |
11343788 | 1535 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) { |
e6438c1a | 1536 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
11343788 | 1537 | return o; /* Treat \(@foo) like ordinary list. */ |
748a9306 LW |
1538 | } |
1539 | /* FALL THROUGH */ | |
79072805 | 1540 | case OP_RV2GV: |
5dc0d613 | 1541 | if (scalar_mod_type(o, type)) |
3fe9a6f1 | 1542 | goto nomod; |
11343788 | 1543 | ref(cUNOPo->op_first, o->op_type); |
79072805 | 1544 | /* FALL THROUGH */ |
79072805 LW |
1545 | case OP_ASLICE: |
1546 | case OP_HSLICE: | |
78f9721b SM |
1547 | if (type == OP_LEAVESUBLV) |
1548 | o->op_private |= OPpMAYBE_LVSUB; | |
ddeae0f1 | 1549 | localize = 1; |
78f9721b SM |
1550 | /* FALL THROUGH */ |
1551 | case OP_AASSIGN: | |
93a17b20 LW |
1552 | case OP_NEXTSTATE: |
1553 | case OP_DBSTATE: | |
e6438c1a | 1554 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
79072805 | 1555 | break; |
463ee0b2 | 1556 | case OP_RV2SV: |
aeea060c | 1557 | ref(cUNOPo->op_first, o->op_type); |
ddeae0f1 | 1558 | localize = 1; |
463ee0b2 | 1559 | /* FALL THROUGH */ |
79072805 | 1560 | case OP_GV: |
463ee0b2 | 1561 | case OP_AV2ARYLEN: |
3280af22 | 1562 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 1563 | case OP_SASSIGN: |
bf4b1e52 GS |
1564 | case OP_ANDASSIGN: |
1565 | case OP_ORASSIGN: | |
c963b151 | 1566 | case OP_DORASSIGN: |
ddeae0f1 DM |
1567 | PL_modcount++; |
1568 | break; | |
1569 | ||
8990e307 | 1570 | case OP_AELEMFAST: |
6a077020 | 1571 | localize = -1; |
3280af22 | 1572 | PL_modcount++; |
8990e307 LW |
1573 | break; |
1574 | ||
748a9306 LW |
1575 | case OP_PADAV: |
1576 | case OP_PADHV: | |
e6438c1a | 1577 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
5196be3e MB |
1578 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) |
1579 | return o; /* Treat \(@foo) like ordinary list. */ | |
1580 | if (scalar_mod_type(o, type)) | |
3fe9a6f1 | 1581 | goto nomod; |
78f9721b SM |
1582 | if (type == OP_LEAVESUBLV) |
1583 | o->op_private |= OPpMAYBE_LVSUB; | |
748a9306 LW |
1584 | /* FALL THROUGH */ |
1585 | case OP_PADSV: | |
3280af22 | 1586 | PL_modcount++; |
ddeae0f1 | 1587 | if (!type) /* local() */ |
cea2e8a9 | 1588 | Perl_croak(aTHX_ "Can't localize lexical variable %s", |
dd2155a4 | 1589 | PAD_COMPNAME_PV(o->op_targ)); |
463ee0b2 LW |
1590 | break; |
1591 | ||
748a9306 | 1592 | case OP_PUSHMARK: |
ddeae0f1 | 1593 | localize = 0; |
748a9306 | 1594 | break; |
b2ffa427 | 1595 | |
69969c6f SB |
1596 | case OP_KEYS: |
1597 | if (type != OP_SASSIGN) | |
1598 | goto nomod; | |
5d82c453 GA |
1599 | goto lvalue_func; |
1600 | case OP_SUBSTR: | |
1601 | if (o->op_private == 4) /* don't allow 4 arg substr as lvalue */ | |
1602 | goto nomod; | |
5f05dabc | 1603 | /* FALL THROUGH */ |
a0d0e21e | 1604 | case OP_POS: |
463ee0b2 | 1605 | case OP_VEC: |
78f9721b SM |
1606 | if (type == OP_LEAVESUBLV) |
1607 | o->op_private |= OPpMAYBE_LVSUB; | |
5d82c453 | 1608 | lvalue_func: |
11343788 MB |
1609 | pad_free(o->op_targ); |
1610 | o->op_targ = pad_alloc(o->op_type, SVs_PADMY); | |
5dc0d613 | 1611 | assert(SvTYPE(PAD_SV(o->op_targ)) == SVt_NULL); |
11343788 MB |
1612 | if (o->op_flags & OPf_KIDS) |
1613 | mod(cBINOPo->op_first->op_sibling, type); | |
463ee0b2 | 1614 | break; |
a0d0e21e | 1615 | |
463ee0b2 LW |
1616 | case OP_AELEM: |
1617 | case OP_HELEM: | |
11343788 | 1618 | ref(cBINOPo->op_first, o->op_type); |
68dc0745 | 1619 | if (type == OP_ENTERSUB && |
5dc0d613 MB |
1620 | !(o->op_private & (OPpLVAL_INTRO | OPpDEREF))) |
1621 | o->op_private |= OPpLVAL_DEFER; | |
78f9721b SM |
1622 | if (type == OP_LEAVESUBLV) |
1623 | o->op_private |= OPpMAYBE_LVSUB; | |
ddeae0f1 | 1624 | localize = 1; |
3280af22 | 1625 | PL_modcount++; |
463ee0b2 LW |
1626 | break; |
1627 | ||
1628 | case OP_SCOPE: | |
1629 | case OP_LEAVE: | |
1630 | case OP_ENTER: | |
78f9721b | 1631 | case OP_LINESEQ: |
ddeae0f1 | 1632 | localize = 0; |
11343788 MB |
1633 | if (o->op_flags & OPf_KIDS) |
1634 | mod(cLISTOPo->op_last, type); | |
a0d0e21e LW |
1635 | break; |
1636 | ||
1637 | case OP_NULL: | |
ddeae0f1 | 1638 | localize = 0; |
638bc118 GS |
1639 | if (o->op_flags & OPf_SPECIAL) /* do BLOCK */ |
1640 | goto nomod; | |
1641 | else if (!(o->op_flags & OPf_KIDS)) | |
463ee0b2 | 1642 | break; |
11343788 MB |
1643 | if (o->op_targ != OP_LIST) { |
1644 | mod(cBINOPo->op_first, type); | |
a0d0e21e LW |
1645 | break; |
1646 | } | |
1647 | /* FALL THROUGH */ | |
463ee0b2 | 1648 | case OP_LIST: |
ddeae0f1 | 1649 | localize = 0; |
11343788 | 1650 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1651 | mod(kid, type); |
1652 | break; | |
78f9721b SM |
1653 | |
1654 | case OP_RETURN: | |
1655 | if (type != OP_LEAVESUBLV) | |
1656 | goto nomod; | |
1657 | break; /* mod()ing was handled by ck_return() */ | |
463ee0b2 | 1658 | } |
58d95175 | 1659 | |
8be1be90 AMS |
1660 | /* [20011101.069] File test operators interpret OPf_REF to mean that |
1661 | their argument is a filehandle; thus \stat(".") should not set | |
1662 | it. AMS 20011102 */ | |
1663 | if (type == OP_REFGEN && | |
1664 | PL_check[o->op_type] == MEMBER_TO_FPTR(Perl_ck_ftst)) | |
1665 | return o; | |
1666 | ||
1667 | if (type != OP_LEAVESUBLV) | |
1668 | o->op_flags |= OPf_MOD; | |
1669 | ||
1670 | if (type == OP_AASSIGN || type == OP_SASSIGN) | |
1671 | o->op_flags |= OPf_SPECIAL|OPf_REF; | |
ddeae0f1 DM |
1672 | else if (!type) { /* local() */ |
1673 | switch (localize) { | |
1674 | case 1: | |
1675 | o->op_private |= OPpLVAL_INTRO; | |
1676 | o->op_flags &= ~OPf_SPECIAL; | |
1677 | PL_hints |= HINT_BLOCK_SCOPE; | |
1678 | break; | |
1679 | case 0: | |
1680 | break; | |
1681 | case -1: | |
1682 | if (ckWARN(WARN_SYNTAX)) { | |
1683 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), | |
1684 | "Useless localization of %s", OP_DESC(o)); | |
1685 | } | |
1686 | } | |
463ee0b2 | 1687 | } |
8be1be90 AMS |
1688 | else if (type != OP_GREPSTART && type != OP_ENTERSUB |
1689 | && type != OP_LEAVESUBLV) | |
1690 | o->op_flags |= OPf_REF; | |
11343788 | 1691 | return o; |
463ee0b2 LW |
1692 | } |
1693 | ||
864dbfa3 | 1694 | STATIC bool |
5f66b61c | 1695 | S_scalar_mod_type(const OP *o, I32 type) |
3fe9a6f1 | 1696 | { |
7918f24d NC |
1697 | PERL_ARGS_ASSERT_SCALAR_MOD_TYPE; |
1698 | ||
3fe9a6f1 | 1699 | switch (type) { |
1700 | case OP_SASSIGN: | |
5196be3e | 1701 | if (o->op_type == OP_RV2GV) |
3fe9a6f1 | 1702 | return FALSE; |
1703 | /* FALL THROUGH */ | |
1704 | case OP_PREINC: | |
1705 | case OP_PREDEC: | |
1706 | case OP_POSTINC: | |
1707 | case OP_POSTDEC: | |
1708 | case OP_I_PREINC: | |
1709 | case OP_I_PREDEC: | |
1710 | case OP_I_POSTINC: | |
1711 | case OP_I_POSTDEC: | |
1712 | case OP_POW: | |
1713 | case OP_MULTIPLY: | |
1714 | case OP_DIVIDE: | |
1715 | case OP_MODULO: | |
1716 | case OP_REPEAT: | |
1717 | case OP_ADD: | |
1718 | case OP_SUBTRACT: | |
1719 | case OP_I_MULTIPLY: | |
1720 | case OP_I_DIVIDE: | |
1721 | case OP_I_MODULO: | |
1722 | case OP_I_ADD: | |
1723 | case OP_I_SUBTRACT: | |
1724 | case OP_LEFT_SHIFT: | |
1725 | case OP_RIGHT_SHIFT: | |
1726 | case OP_BIT_AND: | |
1727 | case OP_BIT_XOR: | |
1728 | case OP_BIT_OR: | |
1729 | case OP_CONCAT: | |
1730 | case OP_SUBST: | |
1731 | case OP_TRANS: | |
49e9fbe6 GS |
1732 | case OP_READ: |
1733 | case OP_SYSREAD: | |
1734 | case OP_RECV: | |
bf4b1e52 GS |
1735 | case OP_ANDASSIGN: |
1736 | case OP_ORASSIGN: | |
410d09fe | 1737 | case OP_DORASSIGN: |
3fe9a6f1 | 1738 | return TRUE; |
1739 | default: | |
1740 | return FALSE; | |
1741 | } | |
1742 | } | |
1743 | ||
35cd451c | 1744 | STATIC bool |
5f66b61c | 1745 | S_is_handle_constructor(const OP *o, I32 numargs) |
35cd451c | 1746 | { |
7918f24d NC |
1747 | PERL_ARGS_ASSERT_IS_HANDLE_CONSTRUCTOR; |
1748 | ||
35cd451c GS |
1749 | switch (o->op_type) { |
1750 | case OP_PIPE_OP: | |
1751 | case OP_SOCKPAIR: | |
504618e9 | 1752 | if (numargs == 2) |
35cd451c GS |
1753 | return TRUE; |
1754 | /* FALL THROUGH */ | |
1755 | case OP_SYSOPEN: | |
1756 | case OP_OPEN: | |
ded8aa31 | 1757 | case OP_SELECT: /* XXX c.f. SelectSaver.pm */ |
35cd451c GS |
1758 | case OP_SOCKET: |
1759 | case OP_OPEN_DIR: | |
1760 | case OP_ACCEPT: | |
504618e9 | 1761 | if (numargs == 1) |
35cd451c | 1762 | return TRUE; |
5f66b61c | 1763 | /* FALLTHROUGH */ |
35cd451c GS |
1764 | default: |
1765 | return FALSE; | |
1766 | } | |
1767 | } | |
1768 | ||
0d86688d NC |
1769 | static OP * |
1770 | S_refkids(pTHX_ OP *o, I32 type) | |
463ee0b2 | 1771 | { |
11343788 | 1772 | if (o && o->op_flags & OPf_KIDS) { |
6867be6d | 1773 | OP *kid; |
11343788 | 1774 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1775 | ref(kid, type); |
1776 | } | |
11343788 | 1777 | return o; |
463ee0b2 LW |
1778 | } |
1779 | ||
1780 | OP * | |
e4c5ccf3 | 1781 | Perl_doref(pTHX_ OP *o, I32 type, bool set_op_ref) |
463ee0b2 | 1782 | { |
27da23d5 | 1783 | dVAR; |
463ee0b2 | 1784 | OP *kid; |
463ee0b2 | 1785 | |
7918f24d NC |
1786 | PERL_ARGS_ASSERT_DOREF; |
1787 | ||
13765c85 | 1788 | if (!o || (PL_parser && PL_parser->error_count)) |
11343788 | 1789 | return o; |
463ee0b2 | 1790 | |
11343788 | 1791 | switch (o->op_type) { |
a0d0e21e | 1792 | case OP_ENTERSUB: |
afebc493 | 1793 | if ((type == OP_EXISTS || type == OP_DEFINED || type == OP_LOCK) && |
11343788 MB |
1794 | !(o->op_flags & OPf_STACKED)) { |
1795 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
22c35a8c | 1796 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 | 1797 | assert(cUNOPo->op_first->op_type == OP_NULL); |
93c66552 | 1798 | op_null(((LISTOP*)cUNOPo->op_first)->op_first); /* disable pushmark */ |
11343788 | 1799 | o->op_flags |= OPf_SPECIAL; |
e26df76a | 1800 | o->op_private &= ~1; |
8990e307 LW |
1801 | } |
1802 | break; | |
aeea060c | 1803 | |
463ee0b2 | 1804 | case OP_COND_EXPR: |
11343788 | 1805 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
e4c5ccf3 | 1806 | doref(kid, type, set_op_ref); |
463ee0b2 | 1807 | break; |
8990e307 | 1808 | case OP_RV2SV: |
35cd451c GS |
1809 | if (type == OP_DEFINED) |
1810 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
e4c5ccf3 | 1811 | doref(cUNOPo->op_first, o->op_type, set_op_ref); |
4633a7c4 LW |
1812 | /* FALL THROUGH */ |
1813 | case OP_PADSV: | |
5f05dabc | 1814 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1815 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1816 | : type == OP_RV2HV ? OPpDEREF_HV | |
1817 | : OPpDEREF_SV); | |
11343788 | 1818 | o->op_flags |= OPf_MOD; |
a0d0e21e | 1819 | } |
8990e307 | 1820 | break; |
1c846c1f | 1821 | |
463ee0b2 LW |
1822 | case OP_RV2AV: |
1823 | case OP_RV2HV: | |
e4c5ccf3 RH |
1824 | if (set_op_ref) |
1825 | o->op_flags |= OPf_REF; | |
8990e307 | 1826 | /* FALL THROUGH */ |
463ee0b2 | 1827 | case OP_RV2GV: |
35cd451c GS |
1828 | if (type == OP_DEFINED) |
1829 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
e4c5ccf3 | 1830 | doref(cUNOPo->op_first, o->op_type, set_op_ref); |
463ee0b2 | 1831 | break; |
8990e307 | 1832 | |
463ee0b2 LW |
1833 | case OP_PADAV: |
1834 | case OP_PADHV: | |
e4c5ccf3 RH |
1835 | if (set_op_ref) |
1836 | o->op_flags |= OPf_REF; | |
79072805 | 1837 | break; |
aeea060c | 1838 | |
8990e307 | 1839 | case OP_SCALAR: |
79072805 | 1840 | case OP_NULL: |
11343788 | 1841 | if (!(o->op_flags & OPf_KIDS)) |
463ee0b2 | 1842 | break; |
e4c5ccf3 | 1843 | doref(cBINOPo->op_first, type, set_op_ref); |
79072805 LW |
1844 | break; |
1845 | case OP_AELEM: | |
1846 | case OP_HELEM: | |
e4c5ccf3 | 1847 | doref(cBINOPo->op_first, o->op_type, set_op_ref); |
5f05dabc | 1848 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1849 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1850 | : type == OP_RV2HV ? OPpDEREF_HV | |
1851 | : OPpDEREF_SV); | |
11343788 | 1852 | o->op_flags |= OPf_MOD; |
8990e307 | 1853 | } |
79072805 LW |
1854 | break; |
1855 | ||
463ee0b2 | 1856 | case OP_SCOPE: |
79072805 | 1857 | case OP_LEAVE: |
e4c5ccf3 RH |
1858 | set_op_ref = FALSE; |
1859 | /* FALL THROUGH */ | |
79072805 | 1860 | case OP_ENTER: |
8990e307 | 1861 | case OP_LIST: |
11343788 | 1862 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1863 | break; |
e4c5ccf3 | 1864 | doref(cLISTOPo->op_last, type, set_op_ref); |
79072805 | 1865 | break; |
a0d0e21e LW |
1866 | default: |
1867 | break; | |
79072805 | 1868 | } |
11343788 | 1869 | return scalar(o); |
8990e307 | 1870 | |
79072805 LW |
1871 | } |
1872 | ||
09bef843 SB |
1873 | STATIC OP * |
1874 | S_dup_attrlist(pTHX_ OP *o) | |
1875 | { | |
97aff369 | 1876 | dVAR; |
0bd48802 | 1877 | OP *rop; |
09bef843 | 1878 | |
7918f24d NC |
1879 | PERL_ARGS_ASSERT_DUP_ATTRLIST; |
1880 | ||
09bef843 SB |
1881 | /* An attrlist is either a simple OP_CONST or an OP_LIST with kids, |
1882 | * where the first kid is OP_PUSHMARK and the remaining ones | |
1883 | * are OP_CONST. We need to push the OP_CONST values. | |
1884 | */ | |
1885 | if (o->op_type == OP_CONST) | |
b37c2d43 | 1886 | rop = newSVOP(OP_CONST, o->op_flags, SvREFCNT_inc_NN(cSVOPo->op_sv)); |
eb8433b7 NC |
1887 | #ifdef PERL_MAD |
1888 | else if (o->op_type == OP_NULL) | |
1d866c12 | 1889 | rop = NULL; |
eb8433b7 | 1890 | #endif |
09bef843 SB |
1891 | else { |
1892 | assert((o->op_type == OP_LIST) && (o->op_flags & OPf_KIDS)); | |
5f66b61c | 1893 | rop = NULL; |
09bef843 SB |
1894 | for (o = cLISTOPo->op_first; o; o=o->op_sibling) { |
1895 | if (o->op_type == OP_CONST) | |
1896 | rop = append_elem(OP_LIST, rop, | |
1897 | newSVOP(OP_CONST, o->op_flags, | |
b37c2d43 | 1898 | SvREFCNT_inc_NN(cSVOPo->op_sv))); |
09bef843 SB |
1899 | } |
1900 | } | |
1901 | return rop; | |
1902 | } | |
1903 | ||
1904 | STATIC void | |
95f0a2f1 | 1905 | S_apply_attrs(pTHX_ HV *stash, SV *target, OP *attrs, bool for_my) |
09bef843 | 1906 | { |
27da23d5 | 1907 | dVAR; |
09bef843 SB |
1908 | SV *stashsv; |
1909 | ||
7918f24d NC |
1910 | PERL_ARGS_ASSERT_APPLY_ATTRS; |
1911 | ||
09bef843 SB |
1912 | /* fake up C<use attributes $pkg,$rv,@attrs> */ |
1913 | ENTER; /* need to protect against side-effects of 'use' */ | |
5aaec2b4 | 1914 | stashsv = stash ? newSVhek(HvNAME_HEK(stash)) : &PL_sv_no; |
e4783991 | 1915 | |
09bef843 | 1916 | #define ATTRSMODULE "attributes" |
95f0a2f1 SB |
1917 | #define ATTRSMODULE_PM "attributes.pm" |
1918 | ||
1919 | if (for_my) { | |
95f0a2f1 | 1920 | /* Don't force the C<use> if we don't need it. */ |
a4fc7abc | 1921 | SV * const * const svp = hv_fetchs(GvHVn(PL_incgv), ATTRSMODULE_PM, FALSE); |
95f0a2f1 | 1922 | if (svp && *svp != &PL_sv_undef) |
6f207bd3 | 1923 | NOOP; /* already in %INC */ |
95f0a2f1 SB |
1924 | else |
1925 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, | |
6136c704 | 1926 | newSVpvs(ATTRSMODULE), NULL); |
95f0a2f1 SB |
1927 | } |
1928 | else { | |
1929 | Perl_load_module(aTHX_ PERL_LOADMOD_IMPORT_OPS, | |
6136c704 AL |
1930 | newSVpvs(ATTRSMODULE), |
1931 | NULL, | |
95f0a2f1 SB |
1932 | prepend_elem(OP_LIST, |
1933 | newSVOP(OP_CONST, 0, stashsv), | |
1934 | prepend_elem(OP_LIST, | |
1935 | newSVOP(OP_CONST, 0, | |
1936 | newRV(target)), | |
1937 | dup_attrlist(attrs)))); | |
1938 | } | |
09bef843 SB |
1939 | LEAVE; |
1940 | } | |
1941 | ||
95f0a2f1 SB |
1942 | STATIC void |
1943 | S_apply_attrs_my(pTHX_ HV *stash, OP *target, OP *attrs, OP **imopsp) | |
1944 | { | |
97aff369 | 1945 | dVAR; |
95f0a2f1 SB |
1946 | OP *pack, *imop, *arg; |
1947 | SV *meth, *stashsv; | |
1948 | ||
7918f24d NC |
1949 | PERL_ARGS_ASSERT_APPLY_ATTRS_MY; |
1950 | ||
95f0a2f1 SB |
1951 | if (!attrs) |
1952 | return; | |
1953 | ||
1954 | assert(target->op_type == OP_PADSV || | |
1955 | target->op_type == OP_PADHV || | |
1956 | target->op_type == OP_PADAV); | |
1957 | ||
1958 | /* Ensure that attributes.pm is loaded. */ | |
dd2155a4 | 1959 | apply_attrs(stash, PAD_SV(target->op_targ), attrs, TRUE); |
95f0a2f1 SB |
1960 | |
1961 | /* Need package name for method call. */ | |
6136c704 | 1962 | pack = newSVOP(OP_CONST, 0, newSVpvs(ATTRSMODULE)); |
95f0a2f1 SB |
1963 | |
1964 | /* Build up the real arg-list. */ | |
5aaec2b4 NC |
1965 | stashsv = stash ? newSVhek(HvNAME_HEK(stash)) : &PL_sv_no; |
1966 | ||
95f0a2f1 SB |
1967 | arg = newOP(OP_PADSV, 0); |
1968 | arg->op_targ = target->op_targ; | |
1969 | arg = prepend_elem(OP_LIST, | |
1970 | newSVOP(OP_CONST, 0, stashsv), | |
1971 | prepend_elem(OP_LIST, | |
1972 | newUNOP(OP_REFGEN, 0, | |
1973 | mod(arg, OP_REFGEN)), | |
1974 | dup_attrlist(attrs))); | |
1975 | ||
1976 | /* Fake up a method call to import */ | |
18916d0d | 1977 | meth = newSVpvs_share("import"); |
95f0a2f1 SB |
1978 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL|OPf_WANT_VOID, |
1979 | append_elem(OP_LIST, | |
1980 | prepend_elem(OP_LIST, pack, list(arg)), | |
1981 | newSVOP(OP_METHOD_NAMED, 0, meth))); | |
1982 | imop->op_private |= OPpENTERSUB_NOMOD; | |
1983 | ||
1984 | /* Combine the ops. */ | |
1985 | *imopsp = append_elem(OP_LIST, *imopsp, imop); | |
1986 | } | |
1987 | ||
1988 | /* | |
1989 | =notfor apidoc apply_attrs_string | |
1990 | ||
1991 | Attempts to apply a list of attributes specified by the C<attrstr> and | |
1992 | C<len> arguments to the subroutine identified by the C<cv> argument which | |
1993 | is expected to be associated with the package identified by the C<stashpv> | |
1994 | argument (see L<attributes>). It gets this wrong, though, in that it | |
1995 | does not correctly identify the boundaries of the individual attribute | |
1996 | specifications within C<attrstr>. This is not really intended for the | |
1997 | public API, but has to be listed here for systems such as AIX which | |
1998 | need an explicit export list for symbols. (It's called from XS code | |
1999 | in support of the C<ATTRS:> keyword from F<xsubpp>.) Patches to fix it | |
2000 | to respect attribute syntax properly would be welcome. | |
2001 | ||
2002 | =cut | |
2003 | */ | |
2004 | ||
be3174d2 | 2005 | void |
6867be6d AL |
2006 | Perl_apply_attrs_string(pTHX_ const char *stashpv, CV *cv, |
2007 | const char *attrstr, STRLEN len) | |
be3174d2 | 2008 | { |
5f66b61c | 2009 | OP *attrs = NULL; |
be3174d2 | 2010 | |
7918f24d NC |
2011 | PERL_ARGS_ASSERT_APPLY_ATTRS_STRING; |
2012 | ||
be3174d2 GS |
2013 | if (!len) { |
2014 | len = strlen(attrstr); | |
2015 | } | |
2016 | ||
2017 | while (len) { | |
2018 | for (; isSPACE(*attrstr) && len; --len, ++attrstr) ; | |
2019 | if (len) { | |
890ce7af | 2020 | const char * const sstr = attrstr; |
be3174d2 GS |
2021 | for (; !isSPACE(*attrstr) && len; --len, ++attrstr) ; |
2022 | attrs = append_elem(OP_LIST, attrs, | |
2023 | newSVOP(OP_CONST, 0, | |
2024 | newSVpvn(sstr, attrstr-sstr))); | |
2025 | } | |
2026 | } | |
2027 | ||
2028 | Perl_load_module(aTHX_ PERL_LOADMOD_IMPORT_OPS, | |
6136c704 | 2029 | newSVpvs(ATTRSMODULE), |
a0714e2c | 2030 | NULL, prepend_elem(OP_LIST, |
be3174d2 GS |
2031 | newSVOP(OP_CONST, 0, newSVpv(stashpv,0)), |
2032 | prepend_elem(OP_LIST, | |
2033 | newSVOP(OP_CONST, 0, | |
ad64d0ec | 2034 | newRV(MUTABLE_SV(cv))), |
be3174d2 GS |
2035 | attrs))); |
2036 | } | |
2037 | ||
09bef843 | 2038 | STATIC OP * |
95f0a2f1 | 2039 | S_my_kid(pTHX_ OP *o, OP *attrs, OP **imopsp) |
93a17b20 | 2040 | { |
97aff369 | 2041 | dVAR; |
93a17b20 LW |
2042 | I32 type; |
2043 | ||
7918f24d NC |
2044 | PERL_ARGS_ASSERT_MY_KID; |
2045 | ||
13765c85 | 2046 | if (!o || (PL_parser && PL_parser->error_count)) |
11343788 | 2047 | return o; |
93a17b20 | 2048 | |
bc61e325 | 2049 | type = o->op_type; |
eb8433b7 NC |
2050 | if (PL_madskills && type == OP_NULL && o->op_flags & OPf_KIDS) { |
2051 | (void)my_kid(cUNOPo->op_first, attrs, imopsp); | |
2052 | return o; | |
2053 | } | |
2054 | ||
93a17b20 | 2055 | if (type == OP_LIST) { |
6867be6d | 2056 | OP *kid; |
11343788 | 2057 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
95f0a2f1 | 2058 | my_kid(kid, attrs, imopsp); |
eb8433b7 NC |
2059 | } else if (type == OP_UNDEF |
2060 | #ifdef PERL_MAD | |
2061 | || type == OP_STUB | |
2062 | #endif | |
2063 | ) { | |
7766148a | 2064 | return o; |
77ca0c92 LW |
2065 | } else if (type == OP_RV2SV || /* "our" declaration */ |
2066 | type == OP_RV2AV || | |
2067 | type == OP_RV2HV) { /* XXX does this let anything illegal in? */ | |
1ce0b88c | 2068 | if (cUNOPo->op_first->op_type != OP_GV) { /* MJD 20011224 */ |
fab01b8e | 2069 | yyerror(Perl_form(aTHX_ "Can't declare %s in \"%s\"", |
952306ac | 2070 | OP_DESC(o), |
12bd6ede DM |
2071 | PL_parser->in_my == KEY_our |
2072 | ? "our" | |
2073 | : PL_parser->in_my == KEY_state ? "state" : "my")); | |
1ce0b88c | 2074 | } else if (attrs) { |
551405c4 | 2075 | GV * const gv = cGVOPx_gv(cUNOPo->op_first); |
12bd6ede DM |
2076 | PL_parser->in_my = FALSE; |
2077 | PL_parser->in_my_stash = NULL; | |
1ce0b88c RGS |
2078 | apply_attrs(GvSTASH(gv), |
2079 | (type == OP_RV2SV ? GvSV(gv) : | |
ad64d0ec NC |
2080 | type == OP_RV2AV ? MUTABLE_SV(GvAV(gv)) : |
2081 | type == OP_RV2HV ? MUTABLE_SV(GvHV(gv)) : MUTABLE_SV(gv)), | |
1ce0b88c RGS |
2082 | attrs, FALSE); |
2083 | } | |
192587c2 | 2084 | o->op_private |= OPpOUR_INTRO; |
77ca0c92 | 2085 | return o; |
95f0a2f1 SB |
2086 | } |
2087 | else if (type != OP_PADSV && | |
93a17b20 LW |
2088 | type != OP_PADAV && |
2089 | type != OP_PADHV && | |
2090 | type != OP_PUSHMARK) | |
2091 | { | |
eb64745e | 2092 | yyerror(Perl_form(aTHX_ "Can't declare %s in \"%s\"", |
53e06cf0 | 2093 | OP_DESC(o), |
12bd6ede DM |
2094 | PL_parser->in_my == KEY_our |
2095 | ? "our" | |
2096 | : PL_parser->in_my == KEY_state ? "state" : "my")); | |
11343788 | 2097 | return o; |
93a17b20 | 2098 | } |
09bef843 SB |
2099 | else if (attrs && type != OP_PUSHMARK) { |
2100 | HV *stash; | |
09bef843 | 2101 | |
12bd6ede DM |
2102 | PL_parser->in_my = FALSE; |
2103 | PL_parser->in_my_stash = NULL; | |
eb64745e | 2104 | |
09bef843 | 2105 | /* check for C<my Dog $spot> when deciding package */ |
dd2155a4 DM |
2106 | stash = PAD_COMPNAME_TYPE(o->op_targ); |
2107 | if (!stash) | |
09bef843 | 2108 | stash = PL_curstash; |
95f0a2f1 | 2109 | apply_attrs_my(stash, o, attrs, imopsp); |
09bef843 | 2110 | } |
11343788 MB |
2111 | o->op_flags |= OPf_MOD; |
2112 | o->op_private |= OPpLVAL_INTRO; | |
12bd6ede | 2113 | if (PL_parser->in_my == KEY_state) |
952306ac | 2114 | o->op_private |= OPpPAD_STATE; |
11343788 | 2115 | return o; |
93a17b20 LW |
2116 | } |
2117 | ||
2118 | OP * | |
09bef843 SB |
2119 | Perl_my_attrs(pTHX_ OP *o, OP *attrs) |
2120 | { | |
97aff369 | 2121 | dVAR; |
0bd48802 | 2122 | OP *rops; |
95f0a2f1 SB |
2123 | int maybe_scalar = 0; |
2124 | ||
7918f24d NC |
2125 | PERL_ARGS_ASSERT_MY_ATTRS; |
2126 | ||
d2be0de5 | 2127 | /* [perl #17376]: this appears to be premature, and results in code such as |
c754c3d7 | 2128 | C< our(%x); > executing in list mode rather than void mode */ |
d2be0de5 | 2129 | #if 0 |
09bef843 SB |
2130 | if (o->op_flags & OPf_PARENS) |
2131 | list(o); | |
95f0a2f1 SB |
2132 | else |
2133 | maybe_scalar = 1; | |
d2be0de5 YST |
2134 | #else |
2135 | maybe_scalar = 1; | |
2136 | #endif | |
09bef843 SB |
2137 | if (attrs) |
2138 | SAVEFREEOP(attrs); | |
5f66b61c | 2139 | rops = NULL; |
95f0a2f1 SB |
2140 | o = my_kid(o, attrs, &rops); |
2141 | if (rops) { | |
2142 | if (maybe_scalar && o->op_type == OP_PADSV) { | |
2143 | o = scalar(append_list(OP_LIST, (LISTOP*)rops, (LISTOP*)o)); | |
2144 | o->op_private |= OPpLVAL_INTRO; | |
2145 | } | |
2146 | else | |
2147 | o = append_list(OP_LIST, (LISTOP*)o, (LISTOP*)rops); | |
2148 | } | |
12bd6ede DM |
2149 | PL_parser->in_my = FALSE; |
2150 | PL_parser->in_my_stash = NULL; | |
eb64745e | 2151 | return o; |
09bef843 SB |
2152 | } |
2153 | ||
2154 | OP * | |
864dbfa3 | 2155 | Perl_sawparens(pTHX_ OP *o) |
79072805 | 2156 | { |
96a5add6 | 2157 | PERL_UNUSED_CONTEXT; |
79072805 LW |
2158 | if (o) |
2159 | o->op_flags |= OPf_PARENS; | |
2160 | return o; | |
2161 | } | |
2162 | ||
2163 | OP * | |
864dbfa3 | 2164 | Perl_bind_match(pTHX_ I32 type, OP *left, OP *right) |
79072805 | 2165 | { |
11343788 | 2166 | OP *o; |
59f00321 | 2167 | bool ismatchop = 0; |
1496a290 AL |
2168 | const OPCODE ltype = left->op_type; |
2169 | const OPCODE rtype = right->op_type; | |
79072805 | 2170 | |
7918f24d NC |
2171 | PERL_ARGS_ASSERT_BIND_MATCH; |
2172 | ||
1496a290 AL |
2173 | if ( (ltype == OP_RV2AV || ltype == OP_RV2HV || ltype == OP_PADAV |
2174 | || ltype == OP_PADHV) && ckWARN(WARN_MISC)) | |
041457d9 | 2175 | { |
1496a290 | 2176 | const char * const desc |
666ea192 JH |
2177 | = PL_op_desc[(rtype == OP_SUBST || rtype == OP_TRANS) |
2178 | ? (int)rtype : OP_MATCH]; | |
2179 | const char * const sample = ((ltype == OP_RV2AV || ltype == OP_PADAV) | |
2180 | ? "@array" : "%hash"); | |
9014280d | 2181 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
1c846c1f | 2182 | "Applying %s to %s will act on scalar(%s)", |
599cee73 | 2183 | desc, sample, sample); |
2ae324a7 | 2184 | } |
2185 | ||
1496a290 | 2186 | if (rtype == OP_CONST && |
5cc9e5c9 RH |
2187 | cSVOPx(right)->op_private & OPpCONST_BARE && |
2188 | cSVOPx(right)->op_private & OPpCONST_STRICT) | |
2189 | { | |
2190 | no_bareword_allowed(right); | |
2191 | } | |
2192 | ||
1496a290 AL |
2193 | ismatchop = rtype == OP_MATCH || |
2194 | rtype == OP_SUBST || | |
2195 | rtype == OP_TRANS; | |
59f00321 RGS |
2196 | if (ismatchop && right->op_private & OPpTARGET_MY) { |
2197 | right->op_targ = 0; | |
2198 | right->op_private &= ~OPpTARGET_MY; | |
2199 | } | |
2200 | if (!(right->op_flags & OPf_STACKED) && ismatchop) { | |
1496a290 AL |
2201 | OP *newleft; |
2202 | ||
79072805 | 2203 | right->op_flags |= OPf_STACKED; |
1496a290 AL |
2204 | if (rtype != OP_MATCH && |
2205 | ! (rtype == OP_TRANS && | |
6fbb66d6 | 2206 | right->op_private & OPpTRANS_IDENTICAL)) |
1496a290 AL |
2207 | newleft = mod(left, rtype); |
2208 | else | |
2209 | newleft = left; | |
79072805 | 2210 | if (right->op_type == OP_TRANS) |
1496a290 | 2211 | o = newBINOP(OP_NULL, OPf_STACKED, scalar(newleft), right); |
79072805 | 2212 | else |
1496a290 | 2213 | o = prepend_elem(rtype, scalar(newleft), right); |
79072805 | 2214 | if (type == OP_NOT) |
11343788 MB |
2215 | return newUNOP(OP_NOT, 0, scalar(o)); |
2216 | return o; | |
79072805 LW |
2217 | } |
2218 | else | |
2219 | return bind_match(type, left, | |
131b3ad0 | 2220 | pmruntime(newPMOP(OP_MATCH, 0), right, 0)); |
79072805 LW |
2221 | } |
2222 | ||
2223 | OP * | |
864dbfa3 | 2224 | Perl_invert(pTHX_ OP *o) |
79072805 | 2225 | { |
11343788 | 2226 | if (!o) |
1d866c12 | 2227 | return NULL; |
11343788 | 2228 | return newUNOP(OP_NOT, OPf_SPECIAL, scalar(o)); |
79072805 LW |
2229 | } |
2230 | ||
2231 | OP * | |
864dbfa3 | 2232 | Perl_scope(pTHX_ OP *o) |
79072805 | 2233 | { |
27da23d5 | 2234 | dVAR; |
79072805 | 2235 | if (o) { |
3280af22 | 2236 | if (o->op_flags & OPf_PARENS || PERLDB_NOOPT || PL_tainting) { |
463ee0b2 LW |
2237 | o = prepend_elem(OP_LINESEQ, newOP(OP_ENTER, 0), o); |
2238 | o->op_type = OP_LEAVE; | |
22c35a8c | 2239 | o->op_ppaddr = PL_ppaddr[OP_LEAVE]; |
463ee0b2 | 2240 | } |
fdb22418 HS |
2241 | else if (o->op_type == OP_LINESEQ) { |
2242 | OP *kid; | |
2243 | o->op_type = OP_SCOPE; | |
2244 | o->op_ppaddr = PL_ppaddr[OP_SCOPE]; | |
2245 | kid = ((LISTOP*)o)->op_first; | |
59110972 | 2246 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) { |
fdb22418 | 2247 | op_null(kid); |
59110972 RH |
2248 | |
2249 | /* The following deals with things like 'do {1 for 1}' */ | |
2250 | kid = kid->op_sibling; | |
2251 | if (kid && | |
2252 | (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE)) | |
2253 | op_null(kid); | |
2254 | } | |
463ee0b2 | 2255 | } |
fdb22418 | 2256 | else |
5f66b61c | 2257 | o = newLISTOP(OP_SCOPE, 0, o, NULL); |
79072805 LW |
2258 | } |
2259 | return o; | |
2260 | } | |
72dc9ed5 | 2261 | |
a0d0e21e | 2262 | int |
864dbfa3 | 2263 | Perl_block_start(pTHX_ int full) |
79072805 | 2264 | { |
97aff369 | 2265 | dVAR; |
73d840c0 | 2266 | const int retval = PL_savestack_ix; |
dd2155a4 | 2267 | pad_block_start(full); |
b3ac6de7 | 2268 | SAVEHINTS(); |
3280af22 | 2269 | PL_hints &= ~HINT_BLOCK_SCOPE; |
68da3b2f | 2270 | SAVECOMPILEWARNINGS(); |
72dc9ed5 | 2271 | PL_compiling.cop_warnings = DUP_WARNINGS(PL_compiling.cop_warnings); |
a0d0e21e LW |
2272 | return retval; |
2273 | } | |
2274 | ||
2275 | OP* | |
864dbfa3 | 2276 | Perl_block_end(pTHX_ I32 floor, OP *seq) |
a0d0e21e | 2277 | { |
97aff369 | 2278 | dVAR; |
6867be6d | 2279 | const int needblockscope = PL_hints & HINT_BLOCK_SCOPE; |
551405c4 | 2280 | OP* const retval = scalarseq(seq); |
e9818f4e | 2281 | LEAVE_SCOPE(floor); |
623e6609 | 2282 | CopHINTS_set(&PL_compiling, PL_hints); |
a0d0e21e | 2283 | if (needblockscope) |
3280af22 | 2284 | PL_hints |= HINT_BLOCK_SCOPE; /* propagate out */ |
dd2155a4 | 2285 | pad_leavemy(); |
a0d0e21e LW |
2286 | return retval; |
2287 | } | |
2288 | ||
76e3520e | 2289 | STATIC OP * |
cea2e8a9 | 2290 | S_newDEFSVOP(pTHX) |
54b9620d | 2291 | { |
97aff369 | 2292 | dVAR; |
9f7d9405 | 2293 | const PADOFFSET offset = pad_findmy("$_"); |
00b1698f | 2294 | if (offset == NOT_IN_PAD || PAD_COMPNAME_FLAGS_isOUR(offset)) { |
59f00321 RGS |
2295 | return newSVREF(newGVOP(OP_GV, 0, PL_defgv)); |
2296 | } | |
2297 | else { | |
551405c4 | 2298 | OP * const o = newOP(OP_PADSV, 0); |
59f00321 RGS |
2299 | o->op_targ = offset; |
2300 | return o; | |
2301 | } | |
54b9620d MB |
2302 | } |
2303 | ||
a0d0e21e | 2304 | void |
864dbfa3 | 2305 | Perl_newPROG(pTHX_ OP *o) |
a0d0e21e | 2306 | { |
97aff369 | 2307 | dVAR; |
7918f24d NC |
2308 | |
2309 | PERL_ARGS_ASSERT_NEWPROG; | |
2310 | ||
3280af22 | 2311 | if (PL_in_eval) { |
b295d113 TH |
2312 | if (PL_eval_root) |
2313 | return; | |
faef0170 HS |
2314 | PL_eval_root = newUNOP(OP_LEAVEEVAL, |
2315 | ((PL_in_eval & EVAL_KEEPERR) | |
2316 | ? OPf_SPECIAL : 0), o); | |
3280af22 | 2317 | PL_eval_start = linklist(PL_eval_root); |
7934575e GS |
2318 | PL_eval_root->op_private |= OPpREFCOUNTED; |
2319 | OpREFCNT_set(PL_eval_root, 1); | |
3280af22 | 2320 | PL_eval_root->op_next = 0; |
a2efc822 | 2321 | CALL_PEEP(PL_eval_start); |
a0d0e21e LW |
2322 | } |
2323 | else { | |
6be89cf9 AE |
2324 | if (o->op_type == OP_STUB) { |
2325 | PL_comppad_name = 0; | |
2326 | PL_compcv = 0; | |
d2c837a0 | 2327 | S_op_destroy(aTHX_ o); |
a0d0e21e | 2328 | return; |
6be89cf9 | 2329 | } |
3280af22 NIS |
2330 | PL_main_root = scope(sawparens(scalarvoid(o))); |
2331 | PL_curcop = &PL_compiling; | |
2332 | PL_main_start = LINKLIST(PL_main_root); | |
7934575e GS |
2333 | PL_main_root->op_private |= OPpREFCOUNTED; |
2334 | OpREFCNT_set(PL_main_root, 1); | |
3280af22 | 2335 | PL_main_root->op_next = 0; |
a2efc822 | 2336 | CALL_PEEP(PL_main_start); |
3280af22 | 2337 | PL_compcv = 0; |
3841441e | 2338 | |
4fdae800 | 2339 | /* Register with debugger */ |
84902520 | 2340 | if (PERLDB_INTER) { |
780a5241 NC |
2341 | CV * const cv |
2342 | = Perl_get_cvn_flags(aTHX_ STR_WITH_LEN("DB::postponed"), 0); | |
3841441e CS |
2343 | if (cv) { |
2344 | dSP; | |
924508f0 | 2345 | PUSHMARK(SP); |
ad64d0ec | 2346 | XPUSHs(MUTABLE_SV(CopFILEGV(&PL_compiling))); |
3841441e | 2347 | PUTBACK; |
ad64d0ec | 2348 | call_sv(MUTABLE_SV(cv), G_DISCARD); |
3841441e CS |
2349 | } |
2350 | } | |
79072805 | 2351 | } |
79072805 LW |
2352 | } |
2353 | ||
2354 | OP * | |
864dbfa3 | 2355 | Perl_localize(pTHX_ OP *o, I32 lex) |
79072805 | 2356 | { |
97aff369 | 2357 | dVAR; |
7918f24d NC |
2358 | |
2359 | PERL_ARGS_ASSERT_LOCALIZE; | |
2360 | ||
79072805 | 2361 | if (o->op_flags & OPf_PARENS) |
d2be0de5 YST |
2362 | /* [perl #17376]: this appears to be premature, and results in code such as |
2363 | C< our(%x); > executing in list mode rather than void mode */ | |
2364 | #if 0 | |
79072805 | 2365 | list(o); |
d2be0de5 | 2366 | #else |
6f207bd3 | 2367 | NOOP; |
d2be0de5 | 2368 | #endif |
8990e307 | 2369 | else { |
f06b5848 DM |
2370 | if ( PL_parser->bufptr > PL_parser->oldbufptr |
2371 | && PL_parser->bufptr[-1] == ',' | |
041457d9 | 2372 | && ckWARN(WARN_PARENTHESIS)) |
64420d0d | 2373 | { |
f06b5848 | 2374 | char *s = PL_parser->bufptr; |
bac662ee | 2375 | bool sigil = FALSE; |
64420d0d | 2376 | |
8473848f | 2377 | /* some heuristics to detect a potential error */ |
bac662ee | 2378 | while (*s && (strchr(", \t\n", *s))) |
64420d0d | 2379 | s++; |
8473848f | 2380 | |
bac662ee TS |
2381 | while (1) { |
2382 | if (*s && strchr("@$%*", *s) && *++s | |
2383 | && (isALNUM(*s) || UTF8_IS_CONTINUED(*s))) { | |
2384 | s++; | |
2385 | sigil = TRUE; | |
2386 | while (*s && (isALNUM(*s) || UTF8_IS_CONTINUED(*s))) | |
2387 | s++; | |
2388 | while (*s && (strchr(", \t\n", *s))) | |
2389 | s++; | |
2390 | } | |
2391 | else | |
2392 | break; | |
2393 | } | |
2394 | if (sigil && (*s == ';' || *s == '=')) { | |
2395 | Perl_warner(aTHX_ packWARN(WARN_PARENTHESIS), | |
8473848f | 2396 | "Parentheses missing around \"%s\" list", |
12bd6ede DM |
2397 | lex |
2398 | ? (PL_parser->in_my == KEY_our | |
2399 | ? "our" | |
2400 | : PL_parser->in_my == KEY_state | |
2401 | ? "state" | |
2402 | : "my") | |
2403 | : "local"); | |
8473848f | 2404 | } |
8990e307 LW |
2405 | } |
2406 | } | |
93a17b20 | 2407 | if (lex) |
eb64745e | 2408 | o = my(o); |
93a17b20 | 2409 | else |
eb64745e | 2410 | o = mod(o, OP_NULL); /* a bit kludgey */ |
12bd6ede DM |
2411 | PL_parser->in_my = FALSE; |
2412 | PL_parser->in_my_stash = NULL; | |
eb64745e | 2413 | return o; |
79072805 LW |
2414 | } |
2415 | ||
2416 | OP * | |
864dbfa3 | 2417 | Perl_jmaybe(pTHX_ OP *o) |
79072805 | 2418 | { |
7918f24d NC |
2419 | PERL_ARGS_ASSERT_JMAYBE; |
2420 | ||
79072805 | 2421 | if (o->op_type == OP_LIST) { |
fafc274c | 2422 | OP * const o2 |
d4c19fe8 | 2423 | = newSVREF(newGVOP(OP_GV, 0, gv_fetchpvs(";", GV_ADD|GV_NOTQUAL, SVt_PV))); |
554b3eca | 2424 | o = convert(OP_JOIN, 0, prepend_elem(OP_LIST, o2, o)); |
79072805 LW |
2425 | } |
2426 | return o; | |
2427 | } | |
2428 | ||
1f676739 | 2429 | static OP * |
b7783a12 | 2430 | S_fold_constants(pTHX_ register OP *o) |
79072805 | 2431 | { |
27da23d5 | 2432 | dVAR; |
001d637e | 2433 | register OP * VOL curop; |
eb8433b7 | 2434 | OP *newop; |
8ea43dc8 | 2435 | VOL I32 type = o->op_type; |
e3cbe32f | 2436 | SV * VOL sv = NULL; |
b7f7fd0b NC |
2437 | int ret = 0; |
2438 | I32 oldscope; | |
2439 | OP *old_next; | |
5f2d9966 DM |
2440 | SV * const oldwarnhook = PL_warnhook; |
2441 | SV * const olddiehook = PL_diehook; | |
c427f4d2 | 2442 | COP not_compiling; |
b7f7fd0b | 2443 | dJMPENV; |
79072805 | 2444 | |
7918f24d NC |
2445 | PERL_ARGS_ASSERT_FOLD_CONSTANTS; |
2446 | ||
22c35a8c | 2447 | if (PL_opargs[type] & OA_RETSCALAR) |
79072805 | 2448 | scalar(o); |
b162f9ea | 2449 | if (PL_opargs[type] & OA_TARGET && !o->op_targ) |
ed6116ce | 2450 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 | 2451 | |
eac055e9 GS |
2452 | /* integerize op, unless it happens to be C<-foo>. |
2453 | * XXX should pp_i_negate() do magic string negation instead? */ | |
2454 | if ((PL_opargs[type] & OA_OTHERINT) && (PL_hints & HINT_INTEGER) | |
2455 | && !(type == OP_NEGATE && cUNOPo->op_first->op_type == OP_CONST | |
2456 | && (cUNOPo->op_first->op_private & OPpCONST_BARE))) | |
2457 | { | |
22c35a8c | 2458 | o->op_ppaddr = PL_ppaddr[type = ++(o->op_type)]; |
eac055e9 | 2459 | } |
85e6fe83 | 2460 | |
22c35a8c | 2461 | if (!(PL_opargs[type] & OA_FOLDCONST)) |
79072805 LW |
2462 | goto nope; |
2463 | ||
de939608 | 2464 | switch (type) { |
7a52d87a GS |
2465 | case OP_NEGATE: |
2466 | /* XXX might want a ck_negate() for this */ | |
2467 | cUNOPo->op_first->op_private &= ~OPpCONST_STRICT; | |
2468 | break; | |
de939608 CS |
2469 | case OP_UCFIRST: |
2470 | case OP_LCFIRST: | |
2471 | case OP_UC: | |
2472 | case OP_LC: | |
69dcf70c MB |
2473 | case OP_SLT: |
2474 | case OP_SGT: | |
2475 | case OP_SLE: | |
2476 | case OP_SGE: | |
2477 | case OP_SCMP: | |
2de3dbcc JH |
2478 | /* XXX what about the numeric ops? */ |
2479 | if (PL_hints & HINT_LOCALE) | |
de939608 | 2480 | goto nope; |
553e7bb0 | 2481 | break; |
de939608 CS |
2482 | } |
2483 | ||
13765c85 | 2484 | if (PL_parser && PL_parser->error_count) |
a0d0e21e LW |
2485 | goto nope; /* Don't try to run w/ errors */ |
2486 | ||
79072805 | 2487 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
1496a290 AL |
2488 | const OPCODE type = curop->op_type; |
2489 | if ((type != OP_CONST || (curop->op_private & OPpCONST_BARE)) && | |
2490 | type != OP_LIST && | |
2491 | type != OP_SCALAR && | |
2492 | type != OP_NULL && | |
2493 | type != OP_PUSHMARK) | |
7a52d87a | 2494 | { |
79072805 LW |
2495 | goto nope; |
2496 | } | |
2497 | } | |
2498 | ||
2499 | curop = LINKLIST(o); | |
b7f7fd0b | 2500 | old_next = o->op_next; |
79072805 | 2501 | o->op_next = 0; |
533c011a | 2502 | PL_op = curop; |
b7f7fd0b NC |
2503 | |
2504 | oldscope = PL_scopestack_ix; | |
edb2152a | 2505 | create_eval_scope(G_FAKINGEVAL); |
b7f7fd0b | 2506 | |
c427f4d2 NC |
2507 | /* Verify that we don't need to save it: */ |
2508 | assert(PL_curcop == &PL_compiling); | |
2509 | StructCopy(&PL_compiling, ¬_compiling, COP); | |
2510 | PL_curcop = ¬_compiling; | |
2511 | /* The above ensures that we run with all the correct hints of the | |
2512 | currently compiling COP, but that IN_PERL_RUNTIME is not true. */ | |
2513 | assert(IN_PERL_RUNTIME); | |
5f2d9966 DM |
2514 | PL_warnhook = PERL_WARNHOOK_FATAL; |
2515 | PL_diehook = NULL; | |
b7f7fd0b NC |
2516 | JMPENV_PUSH(ret); |
2517 | ||
2518 | switch (ret) { | |
2519 | case 0: | |
2520 | CALLRUNOPS(aTHX); | |
2521 | sv = *(PL_stack_sp--); | |
2522 | if (o->op_targ && sv == PAD_SV(o->op_targ)) /* grab pad temp? */ | |
2523 | pad_swipe(o->op_targ, FALSE); | |
2524 | else if (SvTEMP(sv)) { /* grab mortal temp? */ | |
2525 | SvREFCNT_inc_simple_void(sv); | |
2526 | SvTEMP_off(sv); | |
2527 | } | |
2528 | break; | |
2529 | case 3: | |
2530 | /* Something tried to die. Abandon constant folding. */ | |
2531 | /* Pretend the error never happened. */ | |
ab69dbc2 | 2532 | CLEAR_ERRSV(); |
b7f7fd0b NC |
2533 | o->op_next = old_next; |
2534 | break; | |
2535 | default: | |
2536 | JMPENV_POP; | |
5f2d9966 DM |
2537 | /* Don't expect 1 (setjmp failed) or 2 (something called my_exit) */ |
2538 | PL_warnhook = oldwarnhook; | |
2539 | PL_diehook = olddiehook; | |
2540 | /* XXX note that this croak may fail as we've already blown away | |
2541 | * the stack - eg any nested evals */ | |
b7f7fd0b NC |
2542 | Perl_croak(aTHX_ "panic: fold_constants JMPENV_PUSH returned %d", ret); |
2543 | } | |
b7f7fd0b | 2544 | JMPENV_POP; |
5f2d9966 DM |
2545 | PL_warnhook = oldwarnhook; |
2546 | PL_diehook = olddiehook; | |
c427f4d2 | 2547 | PL_curcop = &PL_compiling; |
edb2152a NC |
2548 | |
2549 | if (PL_scopestack_ix > oldscope) | |
2550 | delete_eval_scope(); | |
eb8433b7 | 2551 | |
b7f7fd0b NC |
2552 | if (ret) |
2553 | goto nope; | |
2554 | ||
eb8433b7 | 2555 | #ifndef PERL_MAD |
79072805 | 2556 | op_free(o); |
eb8433b7 | 2557 | #endif |
de5e01c2 | 2558 | assert(sv); |
79072805 | 2559 | if (type == OP_RV2GV) |
159b6efe | 2560 | newop = newGVOP(OP_GV, 0, MUTABLE_GV(sv)); |
eb8433b7 | 2561 | else |
ad64d0ec | 2562 | newop = newSVOP(OP_CONST, 0, MUTABLE_SV(sv)); |
eb8433b7 NC |
2563 | op_getmad(o,newop,'f'); |
2564 | return newop; | |
aeea060c | 2565 | |
b7f7fd0b | 2566 | nope: |
79072805 LW |
2567 | return o; |
2568 | } | |
2569 | ||
1f676739 | 2570 | static OP * |
b7783a12 | 2571 | S_gen_constant_list(pTHX_ register OP *o) |
79072805 | 2572 | { |
27da23d5 | 2573 | dVAR; |
79072805 | 2574 | register OP *curop; |
6867be6d | 2575 | const I32 oldtmps_floor = PL_tmps_floor; |
79072805 | 2576 | |
a0d0e21e | 2577 | list(o); |
13765c85 | 2578 | if (PL_parser && PL_parser->error_count) |
a0d0e21e LW |
2579 | return o; /* Don't attempt to run with errors */ |
2580 | ||
533c011a | 2581 | PL_op = curop = LINKLIST(o); |
a0d0e21e | 2582 | o->op_next = 0; |
a2efc822 | 2583 | CALL_PEEP(curop); |
cea2e8a9 GS |
2584 | pp_pushmark(); |
2585 | CALLRUNOPS(aTHX); | |
533c011a | 2586 | PL_op = curop; |
78c72037 NC |
2587 | assert (!(curop->op_flags & OPf_SPECIAL)); |
2588 | assert(curop->op_type == OP_RANGE); | |
cea2e8a9 | 2589 | pp_anonlist(); |
3280af22 | 2590 | PL_tmps_floor = oldtmps_floor; |
79072805 LW |
2591 | |
2592 | o->op_type = OP_RV2AV; | |
22c35a8c | 2593 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
fb53bbb2 SG |
2594 | o->op_flags &= ~OPf_REF; /* treat \(1..2) like an ordinary list */ |
2595 | o->op_flags |= OPf_PARENS; /* and flatten \(1..2,3) */ | |
2814eb74 | 2596 | o->op_opt = 0; /* needs to be revisited in peep() */ |
79072805 | 2597 | curop = ((UNOP*)o)->op_first; |
b37c2d43 | 2598 | ((UNOP*)o)->op_first = newSVOP(OP_CONST, 0, SvREFCNT_inc_NN(*PL_stack_sp--)); |
eb8433b7 NC |
2599 | #ifdef PERL_MAD |
2600 | op_getmad(curop,o,'O'); | |
2601 | #else | |
79072805 | 2602 | op_free(curop); |
eb8433b7 | 2603 | #endif |
79072805 LW |
2604 | linklist(o); |
2605 | return list(o); | |
2606 | } | |
2607 | ||
2608 | OP * | |
864dbfa3 | 2609 | Perl_convert(pTHX_ I32 type, I32 flags, OP *o) |
79072805 | 2610 | { |
27da23d5 | 2611 | dVAR; |
11343788 | 2612 | if (!o || o->op_type != OP_LIST) |
5f66b61c | 2613 | o = newLISTOP(OP_LIST, 0, o, NULL); |
748a9306 | 2614 | else |
5dc0d613 | 2615 | o->op_flags &= ~OPf_WANT; |
79072805 | 2616 | |
22c35a8c | 2617 | if (!(PL_opargs[type] & OA_MARK)) |
93c66552 | 2618 | op_null(cLISTOPo->op_first); |
8990e307 | 2619 | |
eb160463 | 2620 | o->op_type = (OPCODE)type; |
22c35a8c | 2621 | o->op_ppaddr = PL_ppaddr[type]; |
11343788 | 2622 | o->op_flags |= flags; |
79072805 | 2623 | |
11343788 | 2624 | o = CHECKOP(type, o); |
fe2774ed | 2625 | if (o->op_type != (unsigned)type) |
11343788 | 2626 | return o; |
79072805 | 2627 | |
11343788 | 2628 | return fold_constants(o); |
79072805 LW |
2629 | } |
2630 | ||
2631 | /* List constructors */ | |
2632 | ||
2633 | OP * | |
864dbfa3 | 2634 | Perl_append_elem(pTHX_ I32 type, OP *first, OP *last) |
79072805 LW |
2635 | { |
2636 | if (!first) | |
2637 | return last; | |
8990e307 LW |
2638 | |
2639 | if (!last) | |
79072805 | 2640 | return first; |
8990e307 | 2641 | |
fe2774ed | 2642 | if (first->op_type != (unsigned)type |
155aba94 GS |
2643 | || (type == OP_LIST && (first->op_flags & OPf_PARENS))) |
2644 | { | |
2645 | return newLISTOP(type, 0, first, last); | |
2646 | } | |
79072805 | 2647 | |
a0d0e21e LW |
2648 | if (first->op_flags & OPf_KIDS) |
2649 | ((LISTOP*)first)->op_last->op_sibling = last; | |
2650 | else { | |
2651 | first->op_flags |= OPf_KIDS; | |
2652 | ((LISTOP*)first)->op_first = last; | |
2653 | } | |
2654 | ((LISTOP*)first)->op_last = last; | |
a0d0e21e | 2655 | return first; |
79072805 LW |
2656 | } |
2657 | ||
2658 | OP * | |
864dbfa3 | 2659 | Perl_append_list(pTHX_ I32 type, LISTOP *first, LISTOP *last) |
79072805 LW |
2660 | { |
2661 | if (!first) | |
2662 | return (OP*)last; | |
8990e307 LW |
2663 | |
2664 | if (!last) | |
79072805 | 2665 | return (OP*)first; |
8990e307 | 2666 | |
fe2774ed | 2667 | if (first->op_type != (unsigned)type) |
79072805 | 2668 | return prepend_elem(type, (OP*)first, (OP*)last); |
8990e307 | 2669 | |
fe2774ed | 2670 | if (last->op_type != (unsigned)type) |
79072805 LW |
2671 | return append_elem(type, (OP*)first, (OP*)last); |
2672 | ||
2673 | first->op_last->op_sibling = last->op_first; | |
2674 | first->op_last = last->op_last; | |
117dada2 | 2675 | first->op_flags |= (last->op_flags & OPf_KIDS); |
1c846c1f | 2676 | |
eb8433b7 NC |
2677 | #ifdef PERL_MAD |
2678 | if (last->op_first && first->op_madprop) { | |
2679 | MADPROP *mp = last->op_first->op_madprop; | |
2680 | if (mp) { | |
2681 | while (mp->mad_next) | |
2682 | mp = mp->mad_next; | |
2683 | mp->mad_next = first->op_madprop; | |
2684 | } | |
2685 | else { | |
2686 | last->op_first->op_madprop = first->op_madprop; | |
2687 | } | |
2688 | } | |
2689 | first->op_madprop = last->op_madprop; | |
2690 | last->op_madprop = 0; | |
2691 | #endif | |
2692 | ||
d2c837a0 | 2693 | S_op_destroy(aTHX_ (OP*)last); |
238a4c30 | 2694 | |
79072805 LW |
2695 | return (OP*)first; |
2696 | } | |
2697 | ||
2698 | OP * | |
864dbfa3 | 2699 | Perl_prepend_elem(pTHX_ I32 type, OP *first, OP *last) |
79072805 LW |
2700 | { |
2701 | if (!first) | |
2702 | return last; | |
8990e307 LW |
2703 | |
2704 | if (!last) | |
79072805 | 2705 | return first; |
8990e307 | 2706 | |
fe2774ed | 2707 | if (last->op_type == (unsigned)type) { |
8990e307 LW |
2708 | if (type == OP_LIST) { /* already a PUSHMARK there */ |
2709 | first->op_sibling = ((LISTOP*)last)->op_first->op_sibling; | |
2710 | ((LISTOP*)last)->op_first->op_sibling = first; | |
36a5d4ba DC |
2711 | if (!(first->op_flags & OPf_PARENS)) |
2712 | last->op_flags &= ~OPf_PARENS; | |
8990e307 LW |
2713 | } |
2714 | else { | |
2715 | if (!(last->op_flags & OPf_KIDS)) { | |
2716 | ((LISTOP*)last)->op_last = first; | |
2717 | last->op_flags |= OPf_KIDS; | |
2718 | } | |
2719 | first->op_sibling = ((LISTOP*)last)->op_first; | |
2720 | ((LISTOP*)last)->op_first = first; | |
79072805 | 2721 | } |
117dada2 | 2722 | last->op_flags |= OPf_KIDS; |
79072805 LW |
2723 | return last; |
2724 | } | |
2725 | ||
2726 | return newLISTOP(type, 0, first, last); | |
2727 | } | |
2728 | ||
2729 | /* Constructors */ | |
2730 | ||
eb8433b7 NC |
2731 | #ifdef PERL_MAD |
2732 | ||
2733 | TOKEN * | |
2734 | Perl_newTOKEN(pTHX_ I32 optype, YYSTYPE lval, MADPROP* madprop) | |
2735 | { | |
2736 | TOKEN *tk; | |
99129197 | 2737 | Newxz(tk, 1, TOKEN); |
eb8433b7 NC |
2738 | tk->tk_type = (OPCODE)optype; |
2739 | tk->tk_type = 12345; | |
2740 | tk->tk_lval = lval; | |
2741 | tk->tk_mad = madprop; | |
2742 | return tk; | |
2743 | } | |
2744 | ||
2745 | void | |
2746 | Perl_token_free(pTHX_ TOKEN* tk) | |
2747 | { | |
7918f24d NC |
2748 | PERL_ARGS_ASSERT_TOKEN_FREE; |
2749 | ||
eb8433b7 NC |
2750 | if (tk->tk_type != 12345) |
2751 | return; | |
2752 | mad_free(tk->tk_mad); | |
2753 | Safefree(tk); | |
2754 | } | |
2755 | ||
2756 | void | |
2757 | Perl_token_getmad(pTHX_ TOKEN* tk, OP* o, char slot) | |
2758 | { | |
2759 | MADPROP* mp; | |
2760 | MADPROP* tm; | |
7918f24d NC |
2761 | |
2762 | PERL_ARGS_ASSERT_TOKEN_GETMAD; | |
2763 | ||
eb8433b7 NC |
2764 | if (tk->tk_type != 12345) { |
2765 | Perl_warner(aTHX_ packWARN(WARN_MISC), | |
2766 | "Invalid TOKEN object ignored"); | |
2767 | return; | |
2768 | } | |
2769 | tm = tk->tk_mad; | |
2770 | if (!tm) | |
2771 | return; | |
2772 | ||
2773 | /* faked up qw list? */ | |
2774 | if (slot == '(' && | |
2775 | tm->mad_type == MAD_SV && | |
ad64d0ec | 2776 | SvPVX((const SV *)tm->mad_val)[0] == 'q') |
eb8433b7 NC |
2777 | slot = 'x'; |
2778 | ||
2779 | if (o) { | |
2780 | mp = o->op_madprop; | |
2781 | if (mp) { | |
2782 | for (;;) { | |
2783 | /* pretend constant fold didn't happen? */ | |
2784 | if (mp->mad_key == 'f' && | |
2785 | (o->op_type == OP_CONST || | |
2786 | o->op_type == OP_GV) ) | |
2787 | { | |
2788 | token_getmad(tk,(OP*)mp->mad_val,slot); | |
2789 | return; | |
2790 | } | |
2791 | if (!mp->mad_next) | |
2792 | break; | |
2793 | mp = mp->mad_next; | |
2794 | } | |
2795 | mp->mad_next = tm; | |
2796 | mp = mp->mad_next; | |
2797 | } | |
2798 | else { | |
2799 | o->op_madprop = tm; | |
2800 | mp = o->op_madprop; | |
2801 | } | |
2802 | if (mp->mad_key == 'X') | |
2803 | mp->mad_key = slot; /* just change the first one */ | |
2804 | ||
2805 | tk->tk_mad = 0; | |
2806 | } | |
2807 | else | |
2808 | mad_free(tm); | |
2809 | Safefree(tk); | |
2810 | } | |
2811 | ||
2812 | void | |
2813 | Perl_op_getmad_weak(pTHX_ OP* from, OP* o, char slot) | |
2814 | { | |
2815 | MADPROP* mp; | |
2816 | if (!from) | |
2817 | return; | |
2818 | if (o) { | |
2819 | mp = o->op_madprop; | |
2820 | if (mp) { | |
2821 | for (;;) { | |
2822 | /* pretend constant fold didn't happen? */ | |
2823 | if (mp->mad_key == 'f' && | |
2824 | (o->op_type == OP_CONST || | |
2825 | o->op_type == OP_GV) ) | |
2826 | { | |
2827 | op_getmad(from,(OP*)mp->mad_val,slot); | |
2828 | return; | |
2829 | } | |
2830 | if (!mp->mad_next) | |
2831 | break; | |
2832 | mp = mp->mad_next; | |
2833 | } | |
2834 | mp->mad_next = newMADPROP(slot,MAD_OP,from,0); | |
2835 | } | |
2836 | else { | |
2837 | o->op_madprop = newMADPROP(slot,MAD_OP,from,0); | |
2838 | } | |
2839 | } | |
2840 | } | |
2841 | ||
2842 | void | |
2843 | Perl_op_getmad(pTHX_ OP* from, OP* o, char slot) | |
2844 | { | |
2845 | MADPROP* mp; | |
2846 | if (!from) | |
2847 | return; | |
2848 | if (o) { | |
2849 | mp = o->op_madprop; | |
2850 | if (mp) { | |
2851 | for (;;) { | |
2852 | /* pretend constant fold didn't happen? */ | |
2853 | if (mp->mad_key == 'f' && | |
2854 | (o->op_type == OP_CONST || | |
2855 | o->op_type == OP_GV) ) | |
2856 | { | |
2857 | op_getmad(from,(OP*)mp->mad_val,slot); | |
2858 | return; | |
2859 | } | |
2860 | if (!mp->mad_next) | |
2861 | break; | |
2862 | mp = mp->mad_next; | |
2863 | } | |
2864 | mp->mad_next = newMADPROP(slot,MAD_OP,from,1); | |
2865 | } | |
2866 | else { | |
2867 | o->op_madprop = newMADPROP(slot,MAD_OP,from,1); | |
2868 | } | |
2869 | } | |
2870 | else { | |
99129197 NC |
2871 | PerlIO_printf(PerlIO_stderr(), |
2872 | "DESTROYING op = %0"UVxf"\n", PTR2UV(from)); | |
eb8433b7 NC |
2873 | op_free(from); |
2874 | } | |
2875 | } | |
2876 | ||
2877 | void | |
2878 | Perl_prepend_madprops(pTHX_ MADPROP* mp, OP* o, char slot) | |
2879 | { | |
2880 | MADPROP* tm; | |
2881 | if (!mp || !o) | |
2882 | return; | |
2883 | if (slot) | |
2884 | mp->mad_key = slot; | |
2885 | tm = o->op_madprop; | |
2886 | o->op_madprop = mp; | |
2887 | for (;;) { | |
2888 | if (!mp->mad_next) | |
2889 | break; | |
2890 | mp = mp->mad_next; | |
2891 | } | |
2892 | mp->mad_next = tm; | |
2893 | } | |
2894 | ||
2895 | void | |
2896 | Perl_append_madprops(pTHX_ MADPROP* tm, OP* o, char slot) | |
2897 | { | |
2898 | if (!o) | |
2899 | return; | |
2900 | addmad(tm, &(o->op_madprop), slot); | |
2901 | } | |
2902 | ||
2903 | void | |
2904 | Perl_addmad(pTHX_ MADPROP* tm, MADPROP** root, char slot) | |
2905 | { | |
2906 | MADPROP* mp; | |
2907 | if (!tm || !root) | |
2908 | return; | |
2909 | if (slot) | |
2910 | tm->mad_key = slot; | |
2911 | mp = *root; | |
2912 | if (!mp) { | |
2913 | *root = tm; | |
2914 | return; | |
2915 | } | |
2916 | for (;;) { | |
2917 | if (!mp->mad_next) | |
2918 | break; | |
2919 | mp = mp->mad_next; | |
2920 | } | |
2921 | mp->mad_next = tm; | |
2922 | } | |
2923 | ||
2924 | MADPROP * | |
2925 | Perl_newMADsv(pTHX_ char key, SV* sv) | |
2926 | { | |
7918f24d NC |
2927 | PERL_ARGS_ASSERT_NEWMADSV; |
2928 | ||
eb8433b7 NC |
2929 | return newMADPROP(key, MAD_SV, sv, 0); |
2930 | } | |
2931 | ||
2932 | MADPROP * | |
594c10dc | 2933 | Perl_newMADPROP(pTHX_ char key, char type, const void* val, I32 vlen) |
eb8433b7 NC |
2934 | { |
2935 | MADPROP *mp; | |
99129197 | 2936 | Newxz(mp, 1, MADPROP); |
eb8433b7 NC |
2937 | mp->mad_next = 0; |
2938 | mp->mad_key = key; | |
2939 | mp->mad_vlen = vlen; | |
2940 | mp->mad_type = type; | |
2941 | mp->mad_val = val; | |
2942 | /* PerlIO_printf(PerlIO_stderr(), "NEW mp = %0x\n", mp); */ | |
2943 | return mp; | |
2944 | } | |
2945 | ||
2946 | void | |
2947 | Perl_mad_free(pTHX_ MADPROP* mp) | |
2948 | { | |
2949 | /* PerlIO_printf(PerlIO_stderr(), "FREE mp = %0x\n", mp); */ | |
2950 | if (!mp) | |
2951 | return; | |
2952 | if (mp->mad_next) | |
2953 | mad_free(mp->mad_next); | |
bc177e6b | 2954 | /* if (PL_parser && PL_parser->lex_state != LEX_NOTPARSING && mp->mad_vlen) |
eb8433b7 NC |
2955 | PerlIO_printf(PerlIO_stderr(), "DESTROYING '%c'=<%s>\n", mp->mad_key & 255, mp->mad_val); */ |
2956 | switch (mp->mad_type) { | |
2957 | case MAD_NULL: | |
2958 | break; | |
2959 | case MAD_PV: | |
2960 | Safefree((char*)mp->mad_val); | |
2961 | break; | |
2962 | case MAD_OP: | |
2963 | if (mp->mad_vlen) /* vlen holds "strong/weak" boolean */ | |
2964 | op_free((OP*)mp->mad_val); | |
2965 | break; | |
2966 | case MAD_SV: | |
ad64d0ec | 2967 | sv_free(MUTABLE_SV(mp->mad_val)); |
eb8433b7 NC |
2968 | break; |
2969 | default: | |
2970 | PerlIO_printf(PerlIO_stderr(), "Unrecognized mad\n"); | |
2971 | break; | |
2972 | } | |
2973 | Safefree(mp); | |
2974 | } | |
2975 | ||
2976 | #endif | |
2977 | ||
79072805 | 2978 | OP * |
864dbfa3 | 2979 | Perl_newNULLLIST(pTHX) |
79072805 | 2980 | { |
8990e307 LW |
2981 | return newOP(OP_STUB, 0); |
2982 | } | |
2983 | ||
1f676739 | 2984 | static OP * |
b7783a12 | 2985 | S_force_list(pTHX_ OP *o) |
8990e307 | 2986 | { |
11343788 | 2987 | if (!o || o->op_type != OP_LIST) |
5f66b61c | 2988 | o = newLISTOP(OP_LIST, 0, o, NULL); |
93c66552 | 2989 | op_null(o); |
11343788 | 2990 | return o; |
79072805 LW |
2991 | } |
2992 | ||
2993 | OP * | |
864dbfa3 | 2994 | Perl_newLISTOP(pTHX_ I32 type, I32 flags, OP *first, OP *last) |
79072805 | 2995 | { |
27da23d5 | 2996 | dVAR; |
79072805 LW |
2997 | LISTOP *listop; |
2998 | ||
b7dc083c | 2999 | NewOp(1101, listop, 1, LISTOP); |
79072805 | 3000 | |
eb160463 | 3001 | listop->op_type = (OPCODE)type; |
22c35a8c | 3002 | listop->op_ppaddr = PL_ppaddr[type]; |
117dada2 SM |
3003 | if (first || last) |
3004 | flags |= OPf_KIDS; | |
eb160463 | 3005 | listop->op_flags = (U8)flags; |
79072805 LW |
3006 | |
3007 | if (!last && first) | |
3008 | last = first; | |
3009 | else if (!first && last) | |
3010 | first = last; | |
8990e307 LW |
3011 | else if (first) |
3012 | first->op_sibling = last; | |
79072805 LW |
3013 | listop->op_first = first; |
3014 | listop->op_last = last; | |
8990e307 | 3015 | if (type == OP_LIST) { |
551405c4 | 3016 | OP* const pushop = newOP(OP_PUSHMARK, 0); |
8990e307 LW |
3017 | pushop->op_sibling = first; |
3018 | listop->op_first = pushop; | |
3019 | listop->op_flags |= OPf_KIDS; | |
3020 | if (!last) | |
3021 | listop->op_last = pushop; | |
3022 | } | |
79072805 | 3023 | |
463d09e6 | 3024 | return CHECKOP(type, listop); |
79072805 LW |
3025 | } |
3026 | ||
3027 | OP * | |
864dbfa3 | 3028 | Perl_newOP(pTHX_ I32 type, I32 flags) |
79072805 | 3029 | { |
27da23d5 | 3030 | dVAR; |
11343788 | 3031 | OP *o; |
b7dc083c | 3032 | NewOp(1101, o, 1, OP); |
eb160463 | 3033 | o->op_type = (OPCODE)type; |
22c35a8c | 3034 | o->op_ppaddr = PL_ppaddr[type]; |
eb160463 | 3035 | o->op_flags = (U8)flags; |
670f3923 DM |
3036 | o->op_latefree = 0; |
3037 | o->op_latefreed = 0; | |
7e5d8ed2 | 3038 | o->op_attached = 0; |
79072805 | 3039 | |
11343788 | 3040 | o->op_next = o; |
eb160463 | 3041 | o->op_private = (U8)(0 | (flags >> 8)); |
22c35a8c | 3042 | if (PL_opargs[type] & OA_RETSCALAR) |
11343788 | 3043 | scalar(o); |
22c35a8c | 3044 | if (PL_opargs[type] & OA_TARGET) |
11343788 MB |
3045 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
3046 | return CHECKOP(type, o); | |
79072805 LW |
3047 | } |
3048 | ||
3049 | OP * | |
864dbfa3 | 3050 | Perl_newUNOP(pTHX_ I32 type, I32 flags, OP *first) |
79072805 | 3051 | { |
27da23d5 | 3052 | dVAR; |
79072805 LW |
3053 | UNOP *unop; |
3054 | ||
93a17b20 | 3055 | if (!first) |
aeea060c | 3056 | first = newOP(OP_STUB, 0); |
22c35a8c | 3057 | if (PL_opargs[type] & OA_MARK) |
8990e307 | 3058 | first = force_list(first); |
93a17b20 | 3059 | |
b7dc083c | 3060 | NewOp(1101, unop, 1, UNOP); |
eb160463 | 3061 | unop->op_type = (OPCODE)type; |
22c35a8c | 3062 | unop->op_ppaddr = PL_ppaddr[type]; |
79072805 | 3063 | unop->op_first = first; |
585ec06d | 3064 | unop->op_flags = (U8)(flags | OPf_KIDS); |
eb160463 | 3065 | unop->op_private = (U8)(1 | (flags >> 8)); |
e50aee73 | 3066 | unop = (UNOP*) CHECKOP(type, unop); |
79072805 LW |
3067 | if (unop->op_next) |
3068 | return (OP*)unop; | |
3069 | ||
a0d0e21e | 3070 | return fold_constants((OP *) unop); |
79072805 LW |
3071 | } |
3072 | ||
3073 | OP * | |
864dbfa3 | 3074 | Perl_newBINOP(pTHX_ I32 type, I32 flags, OP *first, OP *last) |
79072805 | 3075 | { |
27da23d5 | 3076 | dVAR; |
79072805 | 3077 | BINOP *binop; |
b7dc083c | 3078 | NewOp(1101, binop, 1, BINOP); |
79072805 LW |
3079 | |
3080 | if (!first) | |
3081 | first = newOP(OP_NULL, 0); | |
3082 | ||
eb160463 | 3083 | binop->op_type = (OPCODE)type; |
22c35a8c | 3084 | binop->op_ppaddr = PL_ppaddr[type]; |
79072805 | 3085 | binop->op_first = first; |
585ec06d | 3086 | binop->op_flags = (U8)(flags | OPf_KIDS); |
79072805 LW |
3087 | if (!last) { |
3088 | last = first; | |
eb160463 | 3089 | binop->op_private = (U8)(1 | (flags >> 8)); |
79072805 LW |
3090 | } |
3091 | else { | |
eb160463 | 3092 | binop->op_private = (U8)(2 | (flags >> 8)); |
79072805 LW |
3093 | first->op_sibling = last; |
3094 | } | |
3095 | ||
e50aee73 | 3096 | binop = (BINOP*)CHECKOP(type, binop); |
eb160463 | 3097 | if (binop->op_next || binop->op_type != (OPCODE)type) |
79072805 LW |
3098 | return (OP*)binop; |
3099 | ||
7284ab6f | 3100 | binop->op_last = binop->op_first->op_sibling; |
79072805 | 3101 | |
a0d0e21e | 3102 | return fold_constants((OP *)binop); |
79072805 LW |
3103 | } |
3104 | ||
5f66b61c AL |
3105 | static int uvcompare(const void *a, const void *b) |
3106 | __attribute__nonnull__(1) | |
3107 | __attribute__nonnull__(2) | |
3108 | __attribute__pure__; | |
abb2c242 | 3109 | static int uvcompare(const void *a, const void *b) |
2b9d42f0 | 3110 | { |
e1ec3a88 | 3111 | if (*((const UV *)a) < (*(const UV *)b)) |
2b9d42f0 | 3112 | return -1; |
e1ec3a88 | 3113 | if (*((const UV *)a) > (*(const UV *)b)) |
2b9d42f0 | 3114 | return 1; |
e1ec3a88 | 3115 | if (*((const UV *)a+1) < (*(const UV *)b+1)) |
2b9d42f0 | 3116 | return -1; |
e1ec3a88 | 3117 | if (*((const UV *)a+1) > (*(const UV *)b+1)) |
2b9d42f0 | 3118 | return 1; |
a0ed51b3 LW |
3119 | return 0; |
3120 | } | |
3121 | ||
0d86688d NC |
3122 | static OP * |
3123 | S_pmtrans(pTHX_ OP *o, OP *expr, OP *repl) | |
79072805 | 3124 | { |
97aff369 | 3125 | dVAR; |
2d03de9c | 3126 | SV * const tstr = ((SVOP*)expr)->op_sv; |
fbbb0949 DM |
3127 | SV * const rstr = |
3128 | #ifdef PERL_MAD | |
3129 | (repl->op_type == OP_NULL) | |
3130 | ? ((SVOP*)((LISTOP*)repl)->op_first)->op_sv : | |
3131 | #endif | |
3132 | ((SVOP*)repl)->op_sv; | |
463ee0b2 LW |
3133 | STRLEN tlen; |
3134 | STRLEN rlen; | |
5c144d81 NC |
3135 | const U8 *t = (U8*)SvPV_const(tstr, tlen); |
3136 | const U8 *r = (U8*)SvPV_const(rstr, rlen); | |
79072805 LW |
3137 | register I32 i; |
3138 | register I32 j; | |
9b877dbb | 3139 | I32 grows = 0; |
79072805 LW |
3140 | register short *tbl; |
3141 | ||
551405c4 AL |
3142 | const I32 complement = o->op_private & OPpTRANS_COMPLEMENT; |
3143 | const I32 squash = o->op_private & OPpTRANS_SQUASH; | |
3144 | I32 del = o->op_private & OPpTRANS_DELETE; | |
043e41b8 | 3145 | SV* swash; |
7918f24d NC |
3146 | |
3147 | PERL_ARGS_ASSERT_PMTRANS; | |
3148 | ||
800b4dc4 | 3149 | PL_hints |= HINT_BLOCK_SCOPE; |
1c846c1f | 3150 | |
036b4402 GS |
3151 | if (SvUTF8(tstr)) |
3152 | o->op_private |= OPpTRANS_FROM_UTF; | |
1c846c1f NIS |
3153 | |
3154 | if (SvUTF8(rstr)) | |
036b4402 | 3155 | o->op_private |= OPpTRANS_TO_UTF; |
79072805 | 3156 | |
a0ed51b3 | 3157 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { |
396482e1 | 3158 | SV* const listsv = newSVpvs("# comment\n"); |
c445ea15 | 3159 | SV* transv = NULL; |
5c144d81 NC |
3160 | const U8* tend = t + tlen; |
3161 | const U8* rend = r + rlen; | |
ba210ebe | 3162 | STRLEN ulen; |
84c133a0 RB |
3163 | UV tfirst = 1; |
3164 | UV tlast = 0; | |
3165 | IV tdiff; | |
3166 | UV rfirst = 1; | |
3167 | UV rlast = 0; | |
3168 | IV rdiff; | |
3169 | IV diff; | |
a0ed51b3 LW |
3170 | I32 none = 0; |
3171 | U32 max = 0; | |
3172 | I32 bits; | |
a0ed51b3 | 3173 | I32 havefinal = 0; |
9c5ffd7c | 3174 | U32 final = 0; |
551405c4 AL |
3175 | const I32 from_utf = o->op_private & OPpTRANS_FROM_UTF; |
3176 | const I32 to_utf = o->op_private & OPpTRANS_TO_UTF; | |
bf4a1e57 JH |
3177 | U8* tsave = NULL; |
3178 | U8* rsave = NULL; | |
9f7f3913 | 3179 | const U32 flags = UTF8_ALLOW_DEFAULT; |
bf4a1e57 JH |
3180 | |
3181 | if (!from_utf) { | |
3182 | STRLEN len = tlen; | |
5c144d81 | 3183 | t = tsave = bytes_to_utf8(t, &len); |
bf4a1e57 JH |
3184 | tend = t + len; |
3185 | } | |
3186 | if (!to_utf && rlen) { | |
3187 | STRLEN len = rlen; | |
5c144d81 | 3188 | r = rsave = bytes_to_utf8(r, &len); |
bf4a1e57 JH |
3189 | rend = r + len; |
3190 | } | |
a0ed51b3 | 3191 | |
2b9d42f0 NIS |
3192 | /* There are several snags with this code on EBCDIC: |
3193 | 1. 0xFF is a legal UTF-EBCDIC byte (there are no illegal bytes). | |
3194 | 2. scan_const() in toke.c has encoded chars in native encoding which makes | |
3195 | ranges at least in EBCDIC 0..255 range the bottom odd. | |
3196 | */ | |
3197 | ||
a0ed51b3 | 3198 | if (complement) { |
89ebb4a3 | 3199 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
2b9d42f0 | 3200 | UV *cp; |
a0ed51b3 | 3201 | UV nextmin = 0; |
a02a5408 | 3202 | Newx(cp, 2*tlen, UV); |
a0ed51b3 | 3203 | i = 0; |
396482e1 | 3204 | transv = newSVpvs(""); |
a0ed51b3 | 3205 | while (t < tend) { |
9f7f3913 | 3206 | cp[2*i] = utf8n_to_uvuni(t, tend-t, &ulen, flags); |
2b9d42f0 NIS |
3207 | t += ulen; |
3208 | if (t < tend && NATIVE_TO_UTF(*t) == 0xff) { | |
a0ed51b3 | 3209 | t++; |
9f7f3913 | 3210 | cp[2*i+1] = utf8n_to_uvuni(t, tend-t, &ulen, flags); |
2b9d42f0 | 3211 | t += ulen; |
a0ed51b3 | 3212 | } |
2b9d42f0 NIS |
3213 | else { |
3214 | cp[2*i+1] = cp[2*i]; | |
3215 | } | |
3216 | i++; | |
a0ed51b3 | 3217 | } |
2b9d42f0 | 3218 | qsort(cp, i, 2*sizeof(UV), uvcompare); |
a0ed51b3 | 3219 | for (j = 0; j < i; j++) { |
2b9d42f0 | 3220 | UV val = cp[2*j]; |
a0ed51b3 LW |
3221 | diff = val - nextmin; |
3222 | if (diff > 0) { | |
9041c2e3 | 3223 | t = uvuni_to_utf8(tmpbuf,nextmin); |
dfe13c55 | 3224 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 | 3225 | if (diff > 1) { |
2b9d42f0 | 3226 | U8 range_mark = UTF_TO_NATIVE(0xff); |
9041c2e3 | 3227 | t = uvuni_to_utf8(tmpbuf, val - 1); |
2b9d42f0 | 3228 | sv_catpvn(transv, (char *)&range_mark, 1); |
dfe13c55 | 3229 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 LW |
3230 | } |
3231 | } | |
2b9d42f0 | 3232 | val = cp[2*j+1]; |
a0ed51b3 LW |
3233 | if (val >= nextmin) |
3234 | nextmin = val + 1; | |
3235 | } | |
9041c2e3 | 3236 | t = uvuni_to_utf8(tmpbuf,nextmin); |
dfe13c55 | 3237 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
2b9d42f0 NIS |
3238 | { |
3239 | U8 range_mark = UTF_TO_NATIVE(0xff); | |
3240 | sv_catpvn(transv, (char *)&range_mark, 1); | |
3241 | } | |
b851fbc1 JH |
3242 | t = uvuni_to_utf8_flags(tmpbuf, 0x7fffffff, |
3243 | UNICODE_ALLOW_SUPER); | |
dfe13c55 | 3244 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
93524f2b | 3245 | t = (const U8*)SvPVX_const(transv); |
a0ed51b3 LW |
3246 | tlen = SvCUR(transv); |
3247 | tend = t + tlen; | |
455d824a | 3248 | Safefree(cp); |
a0ed51b3 LW |
3249 | } |
3250 | else if (!rlen && !del) { | |
3251 | r = t; rlen = tlen; rend = tend; | |
4757a243 LW |
3252 | } |
3253 | if (!squash) { | |
05d340b8 | 3254 | if ((!rlen && !del) || t == r || |
12ae5dfc | 3255 | (tlen == rlen && memEQ((char *)t, (char *)r, tlen))) |
01ec43d0 | 3256 | { |
4757a243 | 3257 | o->op_private |= OPpTRANS_IDENTICAL; |
01ec43d0 | 3258 | } |
a0ed51b3 LW |
3259 | } |
3260 | ||
3261 | while (t < tend || tfirst <= tlast) { | |
3262 | /* see if we need more "t" chars */ | |
3263 | if (tfirst > tlast) { | |
9f7f3913 | 3264 | tfirst = (I32)utf8n_to_uvuni(t, tend - t, &ulen, flags); |
a0ed51b3 | 3265 | t += ulen; |
2b9d42f0 | 3266 | if (t < tend && NATIVE_TO_UTF(*t) == 0xff) { /* illegal utf8 val indicates range */ |
ba210ebe | 3267 | t++; |
9f7f3913 | 3268 | tlast = (I32)utf8n_to_uvuni(t, tend - t, &ulen, flags); |
a0ed51b3 LW |
3269 | t += ulen; |
3270 | } | |
3271 | else | |
3272 | tlast = tfirst; | |
3273 | } | |
3274 | ||
3275 | /* now see if we need more "r" chars */ | |
3276 | if (rfirst > rlast) { | |
3277 | if (r < rend) { | |
9f7f3913 | 3278 | rfirst = (I32)utf8n_to_uvuni(r, rend - r, &ulen, flags); |
a0ed51b3 | 3279 | r += ulen; |
2b9d42f0 | 3280 | if (r < rend && NATIVE_TO_UTF(*r) == 0xff) { /* illegal utf8 val indicates range */ |
ba210ebe | 3281 | r++; |
9f7f3913 | 3282 | rlast = (I32)utf8n_to_uvuni(r, rend - r, &ulen, flags); |
a0ed51b3 LW |
3283 | r += ulen; |
3284 | } | |
3285 | else | |
3286 | rlast = rfirst; | |
3287 | } | |
3288 | else { | |
3289 | if (!havefinal++) | |
3290 | final = rlast; | |
3291 | rfirst = rlast = 0xffffffff; | |
3292 | } | |
3293 | } | |
3294 | ||
3295 | /* now see which range will peter our first, if either. */ | |
3296 | tdiff = tlast - tfirst; | |
3297 | rdiff = rlast - rfirst; | |
3298 | ||
3299 | if (tdiff <= rdiff) | |
3300 | diff = tdiff; | |
3301 | else | |
3302 | diff = rdiff; | |
3303 | ||
3304 | if (rfirst == 0xffffffff) { | |
3305 | diff = tdiff; /* oops, pretend rdiff is infinite */ | |
3306 | if (diff > 0) | |
894356b3 GS |
3307 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t%04lx\tXXXX\n", |
3308 | (long)tfirst, (long)tlast); | |
a0ed51b3 | 3309 | else |
894356b3 | 3310 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t\tXXXX\n", (long)tfirst); |
a0ed51b3 LW |
3311 | } |
3312 | else { | |
3313 | if (diff > 0) | |
894356b3 GS |
3314 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t%04lx\t%04lx\n", |
3315 | (long)tfirst, (long)(tfirst + diff), | |
3316 | (long)rfirst); | |
a0ed51b3 | 3317 | else |
894356b3 GS |
3318 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t\t%04lx\n", |
3319 | (long)tfirst, (long)rfirst); | |
a0ed51b3 LW |
3320 | |
3321 | if (rfirst + diff > max) | |
3322 | max = rfirst + diff; | |
9b877dbb | 3323 | if (!grows) |
45005bfb JH |
3324 | grows = (tfirst < rfirst && |
3325 | UNISKIP(tfirst) < UNISKIP(rfirst + diff)); | |
3326 | rfirst += diff + 1; | |
a0ed51b3 LW |
3327 | } |
3328 | tfirst += diff + 1; | |
3329 | } | |
3330 | ||
3331 | none = ++max; | |
3332 | if (del) | |
3333 | del = ++max; | |
3334 | ||
3335 | if (max > 0xffff) | |
3336 | bits = 32; | |
3337 | else if (max > 0xff) | |
3338 | bits = 16; | |
3339 | else | |
3340 | bits = 8; | |
3341 | ||
ea71c68d | 3342 | PerlMemShared_free(cPVOPo->op_pv); |
b3123a61 | 3343 | cPVOPo->op_pv = NULL; |
043e41b8 | 3344 | |
ad64d0ec | 3345 | swash = MUTABLE_SV(swash_init("utf8", "", listsv, bits, none)); |
043e41b8 DM |
3346 | #ifdef USE_ITHREADS |
3347 | cPADOPo->op_padix = pad_alloc(OP_TRANS, SVs_PADTMP); | |
3348 | SvREFCNT_dec(PAD_SVl(cPADOPo->op_padix)); | |
3349 | PAD_SETSV(cPADOPo->op_padix, swash); | |
3350 | SvPADTMP_on(swash); | |
3351 | #else | |
3352 | cSVOPo->op_sv = swash; | |
3353 | #endif | |
a0ed51b3 | 3354 | SvREFCNT_dec(listsv); |
b37c2d43 | 3355 | SvREFCNT_dec(transv); |
a0ed51b3 | 3356 | |
45005bfb | 3357 | if (!del && havefinal && rlen) |
85fbaab2 | 3358 | (void)hv_store(MUTABLE_HV(SvRV(swash)), "FINAL", 5, |
b448e4fe | 3359 | newSVuv((UV)final), 0); |
a0ed51b3 | 3360 | |
9b877dbb | 3361 | if (grows) |
a0ed51b3 LW |
3362 | o->op_private |= OPpTRANS_GROWS; |
3363 | ||
b37c2d43 AL |
3364 | Safefree(tsave); |
3365 | Safefree(rsave); | |
9b877dbb | 3366 | |
eb8433b7 NC |
3367 | #ifdef PERL_MAD |
3368 | op_getmad(expr,o,'e'); | |
3369 | op_getmad(repl,o,'r'); | |
3370 | #else | |
a0ed51b3 LW |
3371 | op_free(expr); |
3372 | op_free(repl); | |
eb8433b7 | 3373 | #endif |
a0ed51b3 LW |
3374 | return o; |
3375 | } | |
3376 | ||
3377 | tbl = (short*)cPVOPo->op_pv; | |
79072805 LW |
3378 | if (complement) { |
3379 | Zero(tbl, 256, short); | |
eb160463 | 3380 | for (i = 0; i < (I32)tlen; i++) |
ec49126f | 3381 | tbl[t[i]] = -1; |
79072805 LW |
3382 | for (i = 0, j = 0; i < 256; i++) { |
3383 | if (!tbl[i]) { | |
eb160463 | 3384 | if (j >= (I32)rlen) { |
a0ed51b3 | 3385 | if (del) |
79072805 LW |
3386 | tbl[i] = -2; |
3387 | else if (rlen) | |
ec49126f | 3388 | tbl[i] = r[j-1]; |
79072805 | 3389 | else |
eb160463 | 3390 | tbl[i] = (short)i; |
79072805 | 3391 | } |
9b877dbb IH |
3392 | else { |
3393 | if (i < 128 && r[j] >= 128) | |
3394 | grows = 1; | |
ec49126f | 3395 | tbl[i] = r[j++]; |
9b877dbb | 3396 | } |
79072805 LW |
3397 | } |
3398 | } | |
05d340b8 JH |
3399 | if (!del) { |
3400 | if (!rlen) { | |
3401 | j = rlen; | |
3402 | if (!squash) | |
3403 | o->op_private |= OPpTRANS_IDENTICAL; | |
3404 | } | |
eb160463 | 3405 | else if (j >= (I32)rlen) |
05d340b8 | 3406 | j = rlen - 1; |
10db182f | 3407 | else { |
aa1f7c5b JH |
3408 | tbl = |
3409 | (short *) | |
3410 | PerlMemShared_realloc(tbl, | |
3411 | (0x101+rlen-j) * sizeof(short)); | |
10db182f YO |
3412 | cPVOPo->op_pv = (char*)tbl; |
3413 | } | |
585ec06d | 3414 | tbl[0x100] = (short)(rlen - j); |
eb160463 | 3415 | for (i=0; i < (I32)rlen - j; i++) |
8973db79 JH |
3416 | tbl[0x101+i] = r[j+i]; |
3417 | } | |
79072805 LW |
3418 | } |
3419 | else { | |
a0ed51b3 | 3420 | if (!rlen && !del) { |
79072805 | 3421 | r = t; rlen = tlen; |
5d06d08e | 3422 | if (!squash) |
4757a243 | 3423 | o->op_private |= OPpTRANS_IDENTICAL; |
79072805 | 3424 | } |
94bfe852 RGS |
3425 | else if (!squash && rlen == tlen && memEQ((char*)t, (char*)r, tlen)) { |
3426 | o->op_private |= OPpTRANS_IDENTICAL; | |
3427 | } | |
79072805 LW |
3428 | for (i = 0; i < 256; i++) |
3429 | tbl[i] = -1; | |
eb160463 GS |
3430 | for (i = 0, j = 0; i < (I32)tlen; i++,j++) { |
3431 | if (j >= (I32)rlen) { | |
a0ed51b3 | 3432 | if (del) { |
ec49126f | 3433 | if (tbl[t[i]] == -1) |
3434 | tbl[t[i]] = -2; | |
79072805 LW |
3435 | continue; |
3436 | } | |
3437 | --j; | |
3438 | } | |
9b877dbb IH |
3439 | if (tbl[t[i]] == -1) { |
3440 | if (t[i] < 128 && r[j] >= 128) | |
3441 | grows = 1; | |
ec49126f | 3442 | tbl[t[i]] = r[j]; |
9b877dbb | 3443 | } |
79072805 LW |
3444 | } |
3445 | } | |
b08e453b RB |
3446 | |
3447 | if(ckWARN(WARN_MISC)) { | |
3448 | if(del && rlen == tlen) { | |
3449 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Useless use of /d modifier in transliteration operator"); | |
3450 | } else if(rlen > tlen) { | |
3451 | Perl_warner(aTHX_ packWARN(WARN_MISC), "Replacement list is longer than search list"); | |
3452 | } | |
3453 | } | |
3454 | ||
9b877dbb IH |
3455 | if (grows) |
3456 | o->op_private |= OPpTRANS_GROWS; | |
eb8433b7 NC |
3457 | #ifdef PERL_MAD |
3458 | op_getmad(expr,o,'e'); | |
3459 | op_getmad(repl,o,'r'); | |
3460 | #else | |
79072805 LW |
3461 | op_free(expr); |
3462 | op_free(repl); | |
eb8433b7 | 3463 | #endif |
79072805 | 3464 | |
11343788 | 3465 | return o; |
79072805 LW |
3466 | } |
3467 | ||
3468 | OP * | |
864dbfa3 | 3469 | Perl_newPMOP(pTHX_ I32 type, I32 flags) |
79072805 | 3470 | { |
27da23d5 | 3471 | dVAR; |
79072805 LW |
3472 | PMOP *pmop; |
3473 | ||
b7dc083c | 3474 | NewOp(1101, pmop, 1, PMOP); |
eb160463 | 3475 | pmop->op_type = (OPCODE)type; |
22c35a8c | 3476 | pmop->op_ppaddr = PL_ppaddr[type]; |
eb160463 GS |
3477 | pmop->op_flags = (U8)flags; |
3478 | pmop->op_private = (U8)(0 | (flags >> 8)); | |
79072805 | 3479 | |
3280af22 | 3480 | if (PL_hints & HINT_RE_TAINT) |
c737faaf | 3481 | pmop->op_pmflags |= PMf_RETAINT; |
3280af22 | 3482 | if (PL_hints & HINT_LOCALE) |
c737faaf YO |
3483 | pmop->op_pmflags |= PMf_LOCALE; |
3484 | ||
36477c24 | 3485 | |
debc9467 | 3486 | #ifdef USE_ITHREADS |
402d2eb1 NC |
3487 | assert(SvPOK(PL_regex_pad[0])); |
3488 | if (SvCUR(PL_regex_pad[0])) { | |
3489 | /* Pop off the "packed" IV from the end. */ | |
3490 | SV *const repointer_list = PL_regex_pad[0]; | |
3491 | const char *p = SvEND(repointer_list) - sizeof(IV); | |
3492 | const IV offset = *((IV*)p); | |
3493 | ||
3494 | assert(SvCUR(repointer_list) % sizeof(IV) == 0); | |
3495 | ||
3496 | SvEND_set(repointer_list, p); | |
3497 | ||
110f3028 | 3498 | pmop->op_pmoffset = offset; |
14a49a24 NC |
3499 | /* This slot should be free, so assert this: */ |
3500 | assert(PL_regex_pad[offset] == &PL_sv_undef); | |
551405c4 | 3501 | } else { |
14a49a24 | 3502 | SV * const repointer = &PL_sv_undef; |
9a8b6709 | 3503 | av_push(PL_regex_padav, repointer); |
551405c4 AL |
3504 | pmop->op_pmoffset = av_len(PL_regex_padav); |
3505 | PL_regex_pad = AvARRAY(PL_regex_padav); | |
13137afc | 3506 | } |
debc9467 | 3507 | #endif |
1eb1540c | 3508 | |
463d09e6 | 3509 | return CHECKOP(type, pmop); |
79072805 LW |
3510 | } |
3511 | ||
131b3ad0 DM |
3512 | /* Given some sort of match op o, and an expression expr containing a |
3513 | * pattern, either compile expr into a regex and attach it to o (if it's | |
3514 | * constant), or convert expr into a runtime regcomp op sequence (if it's | |
3515 | * not) | |
3516 | * | |
3517 | * isreg indicates that the pattern is part of a regex construct, eg | |
3518 | * $x =~ /pattern/ or split /pattern/, as opposed to $x =~ $pattern or | |
3519 | * split "pattern", which aren't. In the former case, expr will be a list | |
3520 | * if the pattern contains more than one term (eg /a$b/) or if it contains | |
3521 | * a replacement, ie s/// or tr///. | |
3522 | */ | |
3523 | ||
79072805 | 3524 | OP * |
131b3ad0 | 3525 | Perl_pmruntime(pTHX_ OP *o, OP *expr, bool isreg) |
79072805 | 3526 | { |
27da23d5 | 3527 | dVAR; |
79072805 LW |
3528 | PMOP *pm; |
3529 | LOGOP *rcop; | |
ce862d02 | 3530 | I32 repl_has_vars = 0; |
5f66b61c | 3531 | OP* repl = NULL; |
131b3ad0 DM |
3532 | bool reglist; |
3533 | ||
7918f24d NC |
3534 | PERL_ARGS_ASSERT_PMRUNTIME; |
3535 | ||
131b3ad0 DM |
3536 | if (o->op_type == OP_SUBST || o->op_type == OP_TRANS) { |
3537 | /* last element in list is the replacement; pop it */ | |
3538 | OP* kid; | |
3539 | repl = cLISTOPx(expr)->op_last; | |
3540 | kid = cLISTOPx(expr)->op_first; | |
3541 | while (kid->op_sibling != repl) | |
3542 | kid = kid->op_sibling; | |
5f66b61c | 3543 | kid->op_sibling = NULL; |
131b3ad0 DM |
3544 | cLISTOPx(expr)->op_last = kid; |
3545 | } | |
79072805 | 3546 | |
131b3ad0 DM |
3547 | if (isreg && expr->op_type == OP_LIST && |
3548 | cLISTOPx(expr)->op_first->op_sibling == cLISTOPx(expr)->op_last) | |
3549 | { | |
3550 | /* convert single element list to element */ | |
0bd48802 | 3551 | OP* const oe = expr; |
131b3ad0 | 3552 | expr = cLISTOPx(oe)->op_first->op_sibling; |
5f66b61c AL |
3553 | cLISTOPx(oe)->op_first->op_sibling = NULL; |
3554 | cLISTOPx(oe)->op_last = NULL; | |
131b3ad0 DM |
3555 | op_free(oe); |
3556 | } | |
3557 | ||
3558 | if (o->op_type == OP_TRANS) { | |
11343788 | 3559 | return pmtrans(o, expr, repl); |
131b3ad0 DM |
3560 | } |
3561 | ||
3562 | reglist = isreg && expr->op_type == OP_LIST; | |
3563 | if (reglist) | |
3564 | op_null(expr); | |
79072805 | 3565 | |
3280af22 | 3566 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 3567 | pm = (PMOP*)o; |
79072805 LW |
3568 | |
3569 | if (expr->op_type == OP_CONST) { | |
b9ad30b4 | 3570 | SV *pat = ((SVOP*)expr)->op_sv; |
c737faaf | 3571 | U32 pm_flags = pm->op_pmflags & PMf_COMPILETIME; |
5c144d81 | 3572 | |
0ac6acae AB |
3573 | if (o->op_flags & OPf_SPECIAL) |
3574 | pm_flags |= RXf_SPLIT; | |
5c144d81 | 3575 | |
b9ad30b4 NC |
3576 | if (DO_UTF8(pat)) { |
3577 | assert (SvUTF8(pat)); | |
3578 | } else if (SvUTF8(pat)) { | |
3579 | /* Not doing UTF-8, despite what the SV says. Is this only if we're | |
3580 | trapped in use 'bytes'? */ | |
3581 | /* Make a copy of the octet sequence, but without the flag on, as | |
3582 | the compiler now honours the SvUTF8 flag on pat. */ | |
3583 | STRLEN len; | |
3584 | const char *const p = SvPV(pat, len); | |
3585 | pat = newSVpvn_flags(p, len, SVs_TEMP); | |
3586 | } | |
0ac6acae | 3587 | |
3ab4a224 | 3588 | PM_SETRE(pm, CALLREGCOMP(pat, pm_flags)); |
c737faaf | 3589 | |
eb8433b7 NC |
3590 | #ifdef PERL_MAD |
3591 | op_getmad(expr,(OP*)pm,'e'); | |
3592 | #else | |
79072805 | 3593 | op_free(expr); |
eb8433b7 | 3594 | #endif |
79072805 LW |
3595 | } |
3596 | else { | |
3280af22 | 3597 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) |
1c846c1f | 3598 | expr = newUNOP((!(PL_hints & HINT_RE_EVAL) |
2cd61cdb IZ |
3599 | ? OP_REGCRESET |
3600 | : OP_REGCMAYBE),0,expr); | |
463ee0b2 | 3601 | |
b7dc083c | 3602 | NewOp(1101, rcop, 1, LOGOP); |
79072805 | 3603 | rcop->op_type = OP_REGCOMP; |
22c35a8c | 3604 | rcop->op_ppaddr = PL_ppaddr[OP_REGCOMP]; |
79072805 | 3605 | rcop->op_first = scalar(expr); |
131b3ad0 DM |
3606 | rcop->op_flags |= OPf_KIDS |
3607 | | ((PL_hints & HINT_RE_EVAL) ? OPf_SPECIAL : 0) | |
3608 | | (reglist ? OPf_STACKED : 0); | |
79072805 | 3609 | rcop->op_private = 1; |
11343788 | 3610 | rcop->op_other = o; |
131b3ad0 DM |
3611 | if (reglist) |
3612 | rcop->op_targ = pad_alloc(rcop->op_type, SVs_PADTMP); | |
3613 | ||
b5c19bd7 DM |
3614 | /* /$x/ may cause an eval, since $x might be qr/(?{..})/ */ |
3615 | PL_cv_has_eval = 1; | |
79072805 LW |
3616 | |
3617 | /* establish postfix order */ | |
3280af22 | 3618 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) { |
463ee0b2 LW |
3619 | LINKLIST(expr); |
3620 | rcop->op_next = expr; | |
3621 | ((UNOP*)expr)->op_first->op_next = (OP*)rcop; | |
3622 | } | |
3623 | else { | |
3624 | rcop->op_next = LINKLIST(expr); | |
3625 | expr->op_next = (OP*)rcop; | |
3626 | } | |
79072805 | 3627 | |
11343788 | 3628 | prepend_elem(o->op_type, scalar((OP*)rcop), o); |
79072805 LW |
3629 | } |
3630 | ||
3631 | if (repl) { | |
748a9306 | 3632 | OP *curop; |
0244c3a4 | 3633 | if (pm->op_pmflags & PMf_EVAL) { |
6136c704 | 3634 | curop = NULL; |
670a9cb2 DM |
3635 | if (CopLINE(PL_curcop) < (line_t)PL_parser->multi_end) |
3636 | CopLINE_set(PL_curcop, (line_t)PL_parser->multi_end); | |
0244c3a4 | 3637 | } |
748a9306 LW |
3638 | else if (repl->op_type == OP_CONST) |
3639 | curop = repl; | |
79072805 | 3640 | else { |
c445ea15 | 3641 | OP *lastop = NULL; |
79072805 | 3642 | for (curop = LINKLIST(repl); curop!=repl; curop = LINKLIST(curop)) { |
e80b829c | 3643 | if (curop->op_type == OP_SCOPE |
10250113 | 3644 | || curop->op_type == OP_LEAVE |
e80b829c | 3645 | || (PL_opargs[curop->op_type] & OA_DANGEROUS)) { |
79072805 | 3646 | if (curop->op_type == OP_GV) { |
6136c704 | 3647 | GV * const gv = cGVOPx_gv(curop); |
ce862d02 | 3648 | repl_has_vars = 1; |
f702bf4a | 3649 | if (strchr("&`'123456789+-\016\022", *GvENAME(gv))) |
79072805 LW |
3650 | break; |
3651 | } | |
3652 | else if (curop->op_type == OP_RV2CV) | |
3653 | break; | |
3654 | else if (curop->op_type == OP_RV2SV || | |
3655 | curop->op_type == OP_RV2AV || | |
3656 | curop->op_type == OP_RV2HV || | |
3657 | curop->op_type == OP_RV2GV) { | |
3658 | if (lastop && lastop->op_type != OP_GV) /*funny deref?*/ | |
3659 | break; | |
3660 | } | |
748a9306 LW |
3661 | else if (curop->op_type == OP_PADSV || |
3662 | curop->op_type == OP_PADAV || | |
3663 | curop->op_type == OP_PADHV || | |
e80b829c RGS |
3664 | curop->op_type == OP_PADANY) |
3665 | { | |
ce862d02 | 3666 | repl_has_vars = 1; |
748a9306 | 3667 | } |
1167e5da | 3668 | else if (curop->op_type == OP_PUSHRE) |
6f207bd3 | 3669 | NOOP; /* Okay here, dangerous in newASSIGNOP */ |
79072805 LW |
3670 | else |
3671 | break; | |
3672 | } | |
3673 | lastop = curop; | |
3674 | } | |
748a9306 | 3675 | } |
ce862d02 | 3676 | if (curop == repl |
e80b829c RGS |
3677 | && !(repl_has_vars |
3678 | && (!PM_GETRE(pm) | |
07bc277f | 3679 | || RX_EXTFLAGS(PM_GETRE(pm)) & RXf_EVAL_SEEN))) |
3be69782 | 3680 | { |
748a9306 | 3681 | pm->op_pmflags |= PMf_CONST; /* const for long enough */ |
11343788 | 3682 | prepend_elem(o->op_type, scalar(repl), o); |
748a9306 LW |
3683 | } |
3684 | else { | |
aaa362c4 | 3685 | if (curop == repl && !PM_GETRE(pm)) { /* Has variables. */ |
ce862d02 | 3686 | pm->op_pmflags |= PMf_MAYBE_CONST; |
ce862d02 | 3687 | } |
b7dc083c | 3688 | NewOp(1101, rcop, 1, LOGOP); |
748a9306 | 3689 | rcop->op_type = OP_SUBSTCONT; |
22c35a8c | 3690 | rcop->op_ppaddr = PL_ppaddr[OP_SUBSTCONT]; |
748a9306 LW |
3691 | rcop->op_first = scalar(repl); |
3692 | rcop->op_flags |= OPf_KIDS; | |
3693 | rcop->op_private = 1; | |
11343788 | 3694 | rcop->op_other = o; |
748a9306 LW |
3695 | |
3696 | /* establish postfix order */ | |
3697 | rcop->op_next = LINKLIST(repl); | |
3698 | repl->op_next = (OP*)rcop; | |
3699 | ||
20e98b0f | 3700 | pm->op_pmreplrootu.op_pmreplroot = scalar((OP*)rcop); |
29f2e912 NC |
3701 | assert(!(pm->op_pmflags & PMf_ONCE)); |
3702 | pm->op_pmstashstartu.op_pmreplstart = LINKLIST(rcop); | |
748a9306 | 3703 | rcop->op_next = 0; |
79072805 LW |
3704 | } |
3705 | } | |
3706 | ||
3707 | return (OP*)pm; | |
3708 | } | |
3709 | ||
3710 | OP * | |
864dbfa3 | 3711 | Perl_newSVOP(pTHX_ I32 type, I32 flags, SV *sv) |
79072805 | 3712 | { |
27da23d5 | 3713 | dVAR; |
79072805 | 3714 | SVOP *svop; |
7918f24d NC |
3715 | |
3716 | PERL_ARGS_ASSERT_NEWSVOP; | |
3717 | ||
b7dc083c | 3718 | NewOp(1101, svop, 1, SVOP); |
eb160463 | 3719 | svop->op_type = (OPCODE)type; |
22c35a8c | 3720 | svop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
3721 | svop->op_sv = sv; |
3722 | svop->op_next = (OP*)svop; | |
eb160463 | 3723 | svop->op_flags = (U8)flags; |
22c35a8c | 3724 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 3725 | scalar((OP*)svop); |
22c35a8c | 3726 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 3727 | svop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 3728 | return CHECKOP(type, svop); |
79072805 LW |
3729 | } |
3730 | ||
392d04bb | 3731 | #ifdef USE_ITHREADS |
79072805 | 3732 | OP * |
350de78d GS |
3733 | Perl_newPADOP(pTHX_ I32 type, I32 flags, SV *sv) |
3734 | { | |
27da23d5 | 3735 | dVAR; |
350de78d | 3736 | PADOP *padop; |
7918f24d NC |
3737 | |
3738 | PERL_ARGS_ASSERT_NEWPADOP; | |
3739 | ||
350de78d | 3740 | NewOp(1101, padop, 1, PADOP); |
eb160463 | 3741 | padop->op_type = (OPCODE)type; |
350de78d GS |
3742 | padop->op_ppaddr = PL_ppaddr[type]; |
3743 | padop->op_padix = pad_alloc(type, SVs_PADTMP); | |
dd2155a4 DM |
3744 | SvREFCNT_dec(PAD_SVl(padop->op_padix)); |
3745 | PAD_SETSV(padop->op_padix, sv); | |
58182927 NC |
3746 | assert(sv); |
3747 | SvPADTMP_on(sv); | |
350de78d | 3748 | padop->op_next = (OP*)padop; |
eb160463 | 3749 | padop->op_flags = (U8)flags; |
350de78d GS |
3750 | if (PL_opargs[type] & OA_RETSCALAR) |
3751 | scalar((OP*)padop); | |
3752 | if (PL_opargs[type] & OA_TARGET) | |
3753 | padop->op_targ = pad_alloc(type, SVs_PADTMP); | |
3754 | return CHECKOP(type, padop); | |
3755 | } | |
392d04bb | 3756 | #endif |
350de78d GS |
3757 | |
3758 | OP * | |
864dbfa3 | 3759 | Perl_newGVOP(pTHX_ I32 type, I32 flags, GV *gv) |
79072805 | 3760 | { |
27da23d5 | 3761 | dVAR; |
7918f24d NC |
3762 | |
3763 | PERL_ARGS_ASSERT_NEWGVOP; | |
3764 | ||
350de78d | 3765 | #ifdef USE_ITHREADS |
58182927 | 3766 | GvIN_PAD_on(gv); |
ff8997d7 | 3767 | return newPADOP(type, flags, SvREFCNT_inc_simple_NN(gv)); |
350de78d | 3768 | #else |
ff8997d7 | 3769 | return newSVOP(type, flags, SvREFCNT_inc_simple_NN(gv)); |
350de78d | 3770 | #endif |
79072805 LW |
3771 | } |
3772 | ||
3773 | OP * | |
864dbfa3 | 3774 | Perl_newPVOP(pTHX_ I32 type, I32 flags, char *pv) |
79072805 | 3775 | { |
27da23d5 | 3776 | dVAR; |
79072805 | 3777 | PVOP *pvop; |
b7dc083c | 3778 | NewOp(1101, pvop, 1, PVOP); |
eb160463 | 3779 | pvop->op_type = (OPCODE)type; |
22c35a8c | 3780 | pvop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
3781 | pvop->op_pv = pv; |
3782 | pvop->op_next = (OP*)pvop; | |
eb160463 | 3783 | pvop->op_flags = (U8)flags; |
22c35a8c | 3784 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 3785 | scalar((OP*)pvop); |
22c35a8c | 3786 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 3787 | pvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 3788 | return CHECKOP(type, pvop); |
79072805 LW |
3789 | } |
3790 | ||
eb8433b7 NC |
3791 | #ifdef PERL_MAD |
3792 | OP* | |
3793 | #else | |
79072805 | 3794 | void |
eb8433b7 | 3795 | #endif |
864dbfa3 | 3796 | Perl_package(pTHX_ OP *o) |
79072805 | 3797 | { |
97aff369 | 3798 | dVAR; |
bf070237 | 3799 | SV *const sv = cSVOPo->op_sv; |
eb8433b7 NC |
3800 | #ifdef PERL_MAD |
3801 | OP *pegop; | |
3802 | #endif | |
79072805 | 3803 | |
7918f24d NC |
3804 | PERL_ARGS_ASSERT_PACKAGE; |
3805 | ||
3280af22 NIS |
3806 | save_hptr(&PL_curstash); |
3807 | save_item(PL_curstname); | |
de11ba31 | 3808 | |
bf070237 | 3809 | PL_curstash = gv_stashsv(sv, GV_ADD); |
e1a479c5 | 3810 | |
bf070237 | 3811 | sv_setsv(PL_curstname, sv); |
de11ba31 | 3812 | |
7ad382f4 | 3813 | PL_hints |= HINT_BLOCK_SCOPE; |
53a7735b DM |
3814 | PL_parser->copline = NOLINE; |
3815 | PL_parser->expect = XSTATE; | |
eb8433b7 NC |
3816 | |
3817 | #ifndef PERL_MAD | |
3818 | op_free(o); | |
3819 | #else | |
3820 | if (!PL_madskills) { | |
3821 | op_free(o); | |
1d866c12 | 3822 | return NULL; |
eb8433b7 NC |
3823 | } |
3824 | ||
3825 | pegop = newOP(OP_NULL,0); | |
3826 | op_getmad(o,pegop,'P'); | |
3827 | return pegop; | |
3828 | #endif | |
79072805 LW |
3829 | } |
3830 | ||
eb8433b7 NC |
3831 | #ifdef PERL_MAD |
3832 | OP* | |
3833 | #else | |
85e6fe83 | 3834 | void |
eb8433b7 | 3835 | #endif |
88d95a4d | 3836 | Perl_utilize(pTHX_ int aver, I32 floor, OP *version, OP *idop, OP *arg) |
85e6fe83 | 3837 | { |
97aff369 | 3838 | dVAR; |
a0d0e21e | 3839 | OP *pack; |
a0d0e21e | 3840 | OP *imop; |
b1cb66bf | 3841 | OP *veop; |
eb8433b7 NC |
3842 | #ifdef PERL_MAD |
3843 | OP *pegop = newOP(OP_NULL,0); | |
3844 | #endif | |
85e6fe83 | 3845 | |
7918f24d NC |
3846 | PERL_ARGS_ASSERT_UTILIZE; |
3847 | ||
88d95a4d | 3848 | if (idop->op_type != OP_CONST) |
cea2e8a9 | 3849 | Perl_croak(aTHX_ "Module name must be constant"); |
85e6fe83 | 3850 | |
eb8433b7 NC |
3851 | if (PL_madskills) |
3852 | op_getmad(idop,pegop,'U'); | |
3853 | ||
5f66b61c | 3854 | veop = NULL; |
b1cb66bf | 3855 | |
aec46f14 | 3856 | if (version) { |
551405c4 | 3857 | SV * const vesv = ((SVOP*)version)->op_sv; |
b1cb66bf | 3858 | |
eb8433b7 NC |
3859 | if (PL_madskills) |
3860 | op_getmad(version,pegop,'V'); | |
aec46f14 | 3861 | if (!arg && !SvNIOKp(vesv)) { |
b1cb66bf | 3862 | arg = version; |
3863 | } | |
3864 | else { | |
3865 | OP *pack; | |
0f79a09d | 3866 | SV *meth; |
b1cb66bf | 3867 | |
44dcb63b | 3868 | if (version->op_type != OP_CONST || !SvNIOKp(vesv)) |
cea2e8a9 | 3869 | Perl_croak(aTHX_ "Version number must be constant number"); |
b1cb66bf | 3870 | |
88d95a4d JH |
3871 | /* Make copy of idop so we don't free it twice */ |
3872 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)idop)->op_sv)); | |
b1cb66bf | 3873 | |
3874 | /* Fake up a method call to VERSION */ | |
18916d0d | 3875 | meth = newSVpvs_share("VERSION"); |
b1cb66bf | 3876 | veop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, |
3877 | append_elem(OP_LIST, | |
0f79a09d GS |
3878 | prepend_elem(OP_LIST, pack, list(version)), |
3879 | newSVOP(OP_METHOD_NAMED, 0, meth))); | |
b1cb66bf | 3880 | } |
3881 | } | |
aeea060c | 3882 | |
a0d0e21e | 3883 | /* Fake up an import/unimport */ |
eb8433b7 NC |
3884 | if (arg && arg->op_type == OP_STUB) { |
3885 | if (PL_madskills) | |
3886 | op_getmad(arg,pegop,'S'); | |
4633a7c4 | 3887 | imop = arg; /* no import on explicit () */ |
eb8433b7 | 3888 | } |
88d95a4d | 3889 | else if (SvNIOKp(((SVOP*)idop)->op_sv)) { |
5f66b61c | 3890 | imop = NULL; /* use 5.0; */ |
468aa647 RGS |
3891 | if (!aver) |
3892 | idop->op_private |= OPpCONST_NOVER; | |
b1cb66bf | 3893 | } |
4633a7c4 | 3894 | else { |
0f79a09d GS |
3895 | SV *meth; |
3896 | ||
eb8433b7 NC |
3897 | if (PL_madskills) |
3898 | op_getmad(arg,pegop,'A'); | |
3899 | ||
88d95a4d JH |
3900 | /* Make copy of idop so we don't free it twice */ |
3901 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)idop)->op_sv)); | |
0f79a09d GS |
3902 | |
3903 | /* Fake up a method call to import/unimport */ | |
427d62a4 | 3904 | meth = aver |
18916d0d | 3905 | ? newSVpvs_share("import") : newSVpvs_share("unimport"); |
4633a7c4 | 3906 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, |
0f79a09d GS |
3907 | append_elem(OP_LIST, |
3908 | prepend_elem(OP_LIST, pack, list(arg)), | |
3909 | newSVOP(OP_METHOD_NAMED, 0, meth))); | |
4633a7c4 LW |
3910 | } |
3911 | ||
a0d0e21e | 3912 | /* Fake up the BEGIN {}, which does its thing immediately. */ |
09bef843 | 3913 | newATTRSUB(floor, |
18916d0d | 3914 | newSVOP(OP_CONST, 0, newSVpvs_share("BEGIN")), |
5f66b61c AL |
3915 | NULL, |
3916 | NULL, | |
a0d0e21e | 3917 | append_elem(OP_LINESEQ, |
b1cb66bf | 3918 | append_elem(OP_LINESEQ, |
bd61b366 SS |
3919 | newSTATEOP(0, NULL, newUNOP(OP_REQUIRE, 0, idop)), |
3920 | newSTATEOP(0, NULL, veop)), | |
3921 | newSTATEOP(0, NULL, imop) )); | |
85e6fe83 | 3922 | |
70f5e4ed JH |
3923 | /* The "did you use incorrect case?" warning used to be here. |
3924 | * The problem is that on case-insensitive filesystems one | |
3925 | * might get false positives for "use" (and "require"): | |
3926 | * "use Strict" or "require CARP" will work. This causes | |
3927 | * portability problems for the script: in case-strict | |
3928 | * filesystems the script will stop working. | |
3929 | * | |
3930 | * The "incorrect case" warning checked whether "use Foo" | |
3931 | * imported "Foo" to your namespace, but that is wrong, too: | |
3932 | * there is no requirement nor promise in the language that | |
3933 | * a Foo.pm should or would contain anything in package "Foo". | |
3934 | * | |
3935 | * There is very little Configure-wise that can be done, either: | |
3936 | * the case-sensitivity of the build filesystem of Perl does not | |
3937 | * help in guessing the case-sensitivity of the runtime environment. | |
3938 | */ | |
18fc9488 | 3939 | |
c305c6a0 | 3940 | PL_hints |= HINT_BLOCK_SCOPE; |
53a7735b DM |
3941 | PL_parser->copline = NOLINE; |
3942 | PL_parser->expect = XSTATE; | |
8ec8fbef | 3943 | PL_cop_seqmax++; /* Purely for B::*'s benefit */ |
eb8433b7 NC |
3944 | |
3945 | #ifdef PERL_MAD | |
3946 | if (!PL_madskills) { | |
3947 | /* FIXME - don't allocate pegop if !PL_madskills */ | |
3948 | op_free(pegop); | |
1d866c12 | 3949 | return NULL; |
eb8433b7 NC |
3950 | } |
3951 | return pegop; | |
3952 | #endif | |
85e6fe83 LW |
3953 | } |
3954 | ||
7d3fb230 | 3955 | /* |
ccfc67b7 JH |
3956 | =head1 Embedding Functions |
3957 | ||
7d3fb230 BS |
3958 | =for apidoc load_module |
3959 | ||
3960 | Loads the module whose name is pointed to by the string part of name. | |
3961 | Note that the actual module name, not its filename, should be given. | |
3962 | Eg, "Foo::Bar" instead of "Foo/Bar.pm". flags can be any of | |
3963 | PERL_LOADMOD_DENY, PERL_LOADMOD_NOIMPORT, or PERL_LOADMOD_IMPORT_OPS | |
3964 | (or 0 for no flags). ver, if specified, provides version semantics | |
3965 | similar to C<use Foo::Bar VERSION>. The optional trailing SV* | |
3966 | arguments can be used to specify arguments to the module's import() | |
3967 | method, similar to C<use Foo::Bar VERSION LIST>. | |
3968 | ||
3969 | =cut */ | |
3970 | ||
e4783991 GS |
3971 | void |
3972 | Perl_load_module(pTHX_ U32 flags, SV *name, SV *ver, ...) | |
3973 | { | |
3974 | va_list args; | |
7918f24d NC |
3975 | |
3976 | PERL_ARGS_ASSERT_LOAD_MODULE; | |
3977 | ||
e4783991 GS |
3978 | va_start(args, ver); |
3979 | vload_module(flags, name, ver, &args); | |
3980 | va_end(args); | |
3981 | } | |
3982 | ||
3983 | #ifdef PERL_IMPLICIT_CONTEXT | |
3984 | void | |
3985 | Perl_load_module_nocontext(U32 flags, SV *name, SV *ver, ...) | |
3986 | { | |
3987 | dTHX; | |
3988 | va_list args; | |
7918f24d | 3989 | PERL_ARGS_ASSERT_LOAD_MODULE_NOCONTEXT; |
e4783991 GS |
3990 | va_start(args, ver); |
3991 | vload_module(flags, name, ver, &args); | |
3992 | va_end(args); | |
3993 | } | |
3994 | #endif | |
3995 | ||
3996 | void | |
3997 | Perl_vload_module(pTHX_ U32 flags, SV *name, SV *ver, va_list *args) | |
3998 | { | |
97aff369 | 3999 | dVAR; |
551405c4 | 4000 | OP *veop, *imop; |
551405c4 | 4001 | OP * const modname = newSVOP(OP_CONST, 0, name); |
7918f24d NC |
4002 | |
4003 | PERL_ARGS_ASSERT_VLOAD_MODULE; | |
4004 | ||
e4783991 GS |
4005 | modname->op_private |= OPpCONST_BARE; |
4006 | if (ver) { | |
4007 | veop = newSVOP(OP_CONST, 0, ver); | |
4008 | } | |
4009 | else | |
5f66b61c | 4010 | veop = NULL; |
e4783991 GS |
4011 | if (flags & PERL_LOADMOD_NOIMPORT) { |
4012 | imop = sawparens(newNULLLIST()); | |
4013 | } | |
4014 | else if (flags & PERL_LOADMOD_IMPORT_OPS) { | |
4015 | imop = va_arg(*args, OP*); | |
4016 | } | |
4017 | else { | |
4018 | SV *sv; | |
5f66b61c | 4019 | imop = NULL; |
e4783991 GS |
4020 | sv = va_arg(*args, SV*); |
4021 | while (sv) { | |
4022 | imop = append_elem(OP_LIST, imop, newSVOP(OP_CONST, 0, sv)); | |
4023 | sv = va_arg(*args, SV*); | |
4024 | } | |
4025 | } | |
81885997 | 4026 | |
53a7735b DM |
4027 | /* utilize() fakes up a BEGIN { require ..; import ... }, so make sure |
4028 | * that it has a PL_parser to play with while doing that, and also | |
4029 | * that it doesn't mess with any existing parser, by creating a tmp | |
4030 | * new parser with lex_start(). This won't actually be used for much, | |
4031 | * since pp_require() will create another parser for the real work. */ | |
4032 | ||
4033 | ENTER; | |
4034 | SAVEVPTR(PL_curcop); | |
5486870f | 4035 | lex_start(NULL, NULL, FALSE); |
53a7735b DM |
4036 | utilize(!(flags & PERL_LOADMOD_DENY), start_subparse(FALSE, 0), |
4037 | veop, modname, imop); | |
4038 | LEAVE; | |
e4783991 GS |
4039 | } |
4040 | ||
79072805 | 4041 | OP * |
850e8516 | 4042 | Perl_dofile(pTHX_ OP *term, I32 force_builtin) |
78ca652e | 4043 | { |
97aff369 | 4044 | dVAR; |
78ca652e | 4045 | OP *doop; |
a0714e2c | 4046 | GV *gv = NULL; |
78ca652e | 4047 | |
7918f24d NC |
4048 | PERL_ARGS_ASSERT_DOFILE; |
4049 | ||
850e8516 | 4050 | if (!force_builtin) { |
fafc274c | 4051 | gv = gv_fetchpvs("do", GV_NOTQUAL, SVt_PVCV); |
850e8516 | 4052 | if (!(gv && GvCVu(gv) && GvIMPORTED_CV(gv))) { |
a4fc7abc | 4053 | GV * const * const gvp = (GV**)hv_fetchs(PL_globalstash, "do", FALSE); |
a0714e2c | 4054 | gv = gvp ? *gvp : NULL; |
850e8516 RGS |
4055 | } |
4056 | } | |
78ca652e | 4057 | |
b9f751c0 | 4058 | if (gv && GvCVu(gv) && GvIMPORTED_CV(gv)) { |
78ca652e GS |
4059 | doop = ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, |
4060 | append_elem(OP_LIST, term, | |
4061 | scalar(newUNOP(OP_RV2CV, 0, | |
d4c19fe8 | 4062 | newGVOP(OP_GV, 0, gv)))))); |
78ca652e GS |
4063 | } |
4064 | else { | |
4065 | doop = newUNOP(OP_DOFILE, 0, scalar(term)); | |
4066 | } | |
4067 | return doop; | |
4068 | } | |
4069 | ||
4070 | OP * | |
864dbfa3 | 4071 | Perl_newSLICEOP(pTHX_ I32 flags, OP *subscript, OP *listval) |
79072805 LW |
4072 | { |
4073 | return newBINOP(OP_LSLICE, flags, | |
8990e307 LW |
4074 | list(force_list(subscript)), |
4075 | list(force_list(listval)) ); | |
79072805 LW |
4076 | } |
4077 | ||
76e3520e | 4078 | STATIC I32 |
504618e9 | 4079 | S_is_list_assignment(pTHX_ register const OP *o) |
79072805 | 4080 | { |
1496a290 AL |
4081 | unsigned type; |
4082 | U8 flags; | |
4083 | ||
11343788 | 4084 | if (!o) |
79072805 LW |
4085 | return TRUE; |
4086 | ||
1496a290 | 4087 | if ((o->op_type == OP_NULL) && (o->op_flags & OPf_KIDS)) |
11343788 | 4088 | o = cUNOPo->op_first; |
79072805 | 4089 | |
1496a290 AL |
4090 | flags = o->op_flags; |
4091 | type = o->op_type; | |
4092 | if (type == OP_COND_EXPR) { | |
504618e9 AL |
4093 | const I32 t = is_list_assignment(cLOGOPo->op_first->op_sibling); |
4094 | const I32 f = is_list_assignment(cLOGOPo->op_first->op_sibling->op_sibling); | |
79072805 LW |
4095 | |
4096 | if (t && f) | |
4097 | return TRUE; | |
4098 | if (t || f) | |
4099 | yyerror("Assignment to both a list and a scalar"); | |
4100 | return FALSE; | |
4101 | } | |
4102 | ||
1496a290 AL |
4103 | if (type == OP_LIST && |
4104 | (flags & OPf_WANT) == OPf_WANT_SCALAR && | |
95f0a2f1 SB |
4105 | o->op_private & OPpLVAL_INTRO) |
4106 | return FALSE; | |
4107 | ||
1496a290 AL |
4108 | if (type == OP_LIST || flags & OPf_PARENS || |
4109 | type == OP_RV2AV || type == OP_RV2HV || | |
4110 | type == OP_ASLICE || type == OP_HSLICE) | |
79072805 LW |
4111 | return TRUE; |
4112 | ||
1496a290 | 4113 | if (type == OP_PADAV || type == OP_PADHV) |
93a17b20 LW |
4114 | return TRUE; |
4115 | ||
1496a290 | 4116 | if (type == OP_RV2SV) |
79072805 LW |
4117 | return FALSE; |
4118 | ||
4119 | return FALSE; | |
4120 | } | |
4121 | ||
4122 | OP * | |
864dbfa3 | 4123 | Perl_newASSIGNOP(pTHX_ I32 flags, OP *left, I32 optype, OP *right) |
79072805 | 4124 | { |
97aff369 | 4125 | dVAR; |
11343788 | 4126 | OP *o; |
79072805 | 4127 | |
a0d0e21e | 4128 | if (optype) { |
c963b151 | 4129 | if (optype == OP_ANDASSIGN || optype == OP_ORASSIGN || optype == OP_DORASSIGN) { |
a0d0e21e LW |
4130 | return newLOGOP(optype, 0, |
4131 | mod(scalar(left), optype), | |
4132 | newUNOP(OP_SASSIGN, 0, scalar(right))); | |
4133 | } | |
4134 | else { | |
4135 | return newBINOP(optype, OPf_STACKED, | |
4136 | mod(scalar(left), optype), scalar(right)); | |
4137 | } | |
4138 | } | |
4139 | ||
504618e9 | 4140 | if (is_list_assignment(left)) { |
6dbe9451 NC |
4141 | static const char no_list_state[] = "Initialization of state variables" |
4142 | " in list context currently forbidden"; | |
10c8fecd | 4143 | OP *curop; |
fafafbaf | 4144 | bool maybe_common_vars = TRUE; |
10c8fecd | 4145 | |
3280af22 | 4146 | PL_modcount = 0; |
dbfe47cf RD |
4147 | /* Grandfathering $[ assignment here. Bletch.*/ |
4148 | /* Only simple assignments like C<< ($[) = 1 >> are allowed */ | |
fe5bfecd | 4149 | PL_eval_start = (left->op_type == OP_CONST) ? right : NULL; |
463ee0b2 | 4150 | left = mod(left, OP_AASSIGN); |
3280af22 NIS |
4151 | if (PL_eval_start) |
4152 | PL_eval_start = 0; | |
dbfe47cf | 4153 | else if (left->op_type == OP_CONST) { |
eb8433b7 | 4154 | /* FIXME for MAD */ |
dbfe47cf RD |
4155 | /* Result of assignment is always 1 (or we'd be dead already) */ |
4156 | return newSVOP(OP_CONST, 0, newSViv(1)); | |
a0d0e21e | 4157 | } |
10c8fecd GS |
4158 | curop = list(force_list(left)); |
4159 | o = newBINOP(OP_AASSIGN, flags, list(force_list(right)), curop); | |
eb160463 | 4160 | o->op_private = (U8)(0 | (flags >> 8)); |
dd2155a4 | 4161 | |
fafafbaf RD |
4162 | if ((left->op_type == OP_LIST |
4163 | || (left->op_type == OP_NULL && left->op_targ == OP_LIST))) | |
4164 | { | |
4165 | OP* lop = ((LISTOP*)left)->op_first; | |
4166 | maybe_common_vars = FALSE; | |
4167 | while (lop) { | |
4168 | if (lop->op_type == OP_PADSV || | |
4169 | lop->op_type == OP_PADAV || | |
4170 | lop->op_type == OP_PADHV || | |
4171 | lop->op_type == OP_PADANY) { | |
4172 | if (!(lop->op_private & OPpLVAL_INTRO)) | |
4173 | maybe_common_vars = TRUE; | |
4174 | ||
4175 | if (lop->op_private & OPpPAD_STATE) { | |
4176 | if (left->op_private & OPpLVAL_INTRO) { | |
4177 | /* Each variable in state($a, $b, $c) = ... */ | |
4178 | } | |
4179 | else { | |
4180 | /* Each state variable in | |
4181 | (state $a, my $b, our $c, $d, undef) = ... */ | |
4182 | } | |
4183 | yyerror(no_list_state); | |
4184 | } else { | |
4185 | /* Each my variable in | |
4186 | (state $a, my $b, our $c, $d, undef) = ... */ | |
4187 | } | |
4188 | } else if (lop->op_type == OP_UNDEF || | |
4189 | lop->op_type == OP_PUSHMARK) { | |
4190 | /* undef may be interesting in | |
4191 | (state $a, undef, state $c) */ | |
4192 | } else { | |
4193 | /* Other ops in the list. */ | |
4194 | maybe_common_vars = TRUE; | |
4195 | } | |
4196 | lop = lop->op_sibling; | |
4197 | } | |
4198 | } | |
4199 | else if ((left->op_private & OPpLVAL_INTRO) | |
4200 | && ( left->op_type == OP_PADSV | |
4201 | || left->op_type == OP_PADAV | |
4202 | || left->op_type == OP_PADHV | |
4203 | || left->op_type == OP_PADANY)) | |
4204 | { | |
4205 | maybe_common_vars = FALSE; | |
4206 | if (left->op_private & OPpPAD_STATE) { | |
4207 | /* All single variable list context state assignments, hence | |
4208 | state ($a) = ... | |
4209 | (state $a) = ... | |
4210 | state @a = ... | |
4211 | state (@a) = ... | |
4212 | (state @a) = ... | |
4213 | state %a = ... | |
4214 | state (%a) = ... | |
4215 | (state %a) = ... | |
4216 | */ | |
4217 | yyerror(no_list_state); | |
4218 | } | |
4219 | } | |
4220 | ||
dd2155a4 DM |
4221 | /* PL_generation sorcery: |
4222 | * an assignment like ($a,$b) = ($c,$d) is easier than | |
4223 | * ($a,$b) = ($c,$a), since there is no need for temporary vars. | |
4224 | * To detect whether there are common vars, the global var | |
4225 | * PL_generation is incremented for each assign op we compile. | |
4226 | * Then, while compiling the assign op, we run through all the | |
4227 | * variables on both sides of the assignment, setting a spare slot | |
4228 | * in each of them to PL_generation. If any of them already have | |
4229 | * that value, we know we've got commonality. We could use a | |
4230 | * single bit marker, but then we'd have to make 2 passes, first | |
4231 | * to clear the flag, then to test and set it. To find somewhere | |
931b58fb | 4232 | * to store these values, evil chicanery is done with SvUVX(). |
dd2155a4 DM |
4233 | */ |
4234 | ||
fafafbaf | 4235 | if (maybe_common_vars) { |
11343788 | 4236 | OP *lastop = o; |
3280af22 | 4237 | PL_generation++; |
11343788 | 4238 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
22c35a8c | 4239 | if (PL_opargs[curop->op_type] & OA_DANGEROUS) { |
79072805 | 4240 | if (curop->op_type == OP_GV) { |
638eceb6 | 4241 | GV *gv = cGVOPx_gv(curop); |
169d2d72 NC |
4242 | if (gv == PL_defgv |
4243 | || (int)GvASSIGN_GENERATION(gv) == PL_generation) | |
79072805 | 4244 | break; |
169d2d72 | 4245 | GvASSIGN_GENERATION_set(gv, PL_generation); |
79072805 | 4246 | } |
748a9306 LW |
4247 | else if (curop->op_type == OP_PADSV || |
4248 | curop->op_type == OP_PADAV || | |
4249 | curop->op_type == OP_PADHV || | |
dd2155a4 DM |
4250 | curop->op_type == OP_PADANY) |
4251 | { | |
4252 | if (PAD_COMPNAME_GEN(curop->op_targ) | |
92251a1e | 4253 | == (STRLEN)PL_generation) |
748a9306 | 4254 | break; |
b162af07 | 4255 | PAD_COMPNAME_GEN_set(curop->op_targ, PL_generation); |
dd2155a4 | 4256 | |
748a9306 | 4257 | } |
79072805 LW |
4258 | else if (curop->op_type == OP_RV2CV) |
4259 | break; | |
4260 | else if (curop->op_type == OP_RV2SV || | |
4261 | curop->op_type == OP_RV2AV || | |
4262 | curop->op_type == OP_RV2HV || | |
4263 | curop->op_type == OP_RV2GV) { | |
4264 | if (lastop->op_type != OP_GV) /* funny deref? */ | |
4265 | break; | |
4266 | } | |
1167e5da | 4267 | else if (curop->op_type == OP_PUSHRE) { |
b3f5893f | 4268 | #ifdef USE_ITHREADS |
20e98b0f | 4269 | if (((PMOP*)curop)->op_pmreplrootu.op_pmtargetoff) { |
159b6efe | 4270 | GV *const gv = MUTABLE_GV(PAD_SVl(((PMOP*)curop)->op_pmreplrootu.op_pmtargetoff)); |
169d2d72 NC |
4271 | if (gv == PL_defgv |
4272 | || (int)GvASSIGN_GENERATION(gv) == PL_generation) | |
1167e5da | 4273 | break; |
169d2d72 | 4274 | GvASSIGN_GENERATION_set(gv, PL_generation); |
20e98b0f NC |
4275 | } |
4276 | #else | |
4277 | GV *const gv | |
4278 | = ((PMOP*)curop)->op_pmreplrootu.op_pmtargetgv; | |
4279 | if (gv) { | |
4280 | if (gv == PL_defgv | |
4281 | || (int)GvASSIGN_GENERATION(gv) == PL_generation) | |
4282 | break; | |
169d2d72 | 4283 | GvASSIGN_GENERATION_set(gv, PL_generation); |
b2ffa427 | 4284 | } |
20e98b0f | 4285 | #endif |
1167e5da | 4286 | } |
79072805 LW |
4287 | else |
4288 | break; | |
4289 | } | |
4290 | lastop = curop; | |
4291 | } | |
11343788 | 4292 | if (curop != o) |
10c8fecd | 4293 | o->op_private |= OPpASSIGN_COMMON; |
461824dc | 4294 | } |
9fdc7570 | 4295 | |
e9cc17ba | 4296 | if (right && right->op_type == OP_SPLIT && !PL_madskills) { |
1496a290 AL |
4297 | OP* tmpop = ((LISTOP*)right)->op_first; |
4298 | if (tmpop && (tmpop->op_type == OP_PUSHRE)) { | |
551405c4 | 4299 | PMOP * const pm = (PMOP*)tmpop; |
c07a80fd | 4300 | if (left->op_type == OP_RV2AV && |
4301 | !(left->op_private & OPpLVAL_INTRO) && | |
11343788 | 4302 | !(o->op_private & OPpASSIGN_COMMON) ) |
c07a80fd | 4303 | { |
4304 | tmpop = ((UNOP*)left)->op_first; | |
20e98b0f NC |
4305 | if (tmpop->op_type == OP_GV |
4306 | #ifdef USE_ITHREADS | |
4307 | && !pm->op_pmreplrootu.op_pmtargetoff | |
4308 | #else | |
4309 | && !pm->op_pmreplrootu.op_pmtargetgv | |
4310 | #endif | |
4311 | ) { | |
971a9dd3 | 4312 | #ifdef USE_ITHREADS |
20e98b0f NC |
4313 | pm->op_pmreplrootu.op_pmtargetoff |
4314 | = cPADOPx(tmpop)->op_padix; | |
971a9dd3 GS |
4315 | cPADOPx(tmpop)->op_padix = 0; /* steal it */ |
4316 | #else | |
20e98b0f | 4317 | pm->op_pmreplrootu.op_pmtargetgv |
159b6efe | 4318 | = MUTABLE_GV(cSVOPx(tmpop)->op_sv); |
a0714e2c | 4319 | cSVOPx(tmpop)->op_sv = NULL; /* steal it */ |
971a9dd3 | 4320 | #endif |
c07a80fd | 4321 | pm->op_pmflags |= PMf_ONCE; |
11343788 | 4322 | tmpop = cUNOPo->op_first; /* to list (nulled) */ |
c07a80fd | 4323 | tmpop = ((UNOP*)tmpop)->op_first; /* to pushmark */ |
5f66b61c | 4324 | tmpop->op_sibling = NULL; /* don't free split */ |
c07a80fd | 4325 | right->op_next = tmpop->op_next; /* fix starting loc */ |
11343788 | 4326 | op_free(o); /* blow off assign */ |
54310121 | 4327 | right->op_flags &= ~OPf_WANT; |
a5f75d66 | 4328 | /* "I don't know and I don't care." */ |
c07a80fd | 4329 | return right; |
4330 | } | |
4331 | } | |
4332 | else { | |
e6438c1a | 4333 | if (PL_modcount < RETURN_UNLIMITED_NUMBER && |
c07a80fd | 4334 | ((LISTOP*)right)->op_last->op_type == OP_CONST) |
4335 | { | |
4336 | SV *sv = ((SVOP*)((LISTOP*)right)->op_last)->op_sv; | |
4337 | if (SvIVX(sv) == 0) | |
3280af22 | 4338 | sv_setiv(sv, PL_modcount+1); |
c07a80fd | 4339 | } |
4340 | } | |
4341 | } | |
4342 | } | |
11343788 | 4343 | return o; |
79072805 LW |
4344 | } |
4345 | if (!right) | |
4346 | right = newOP(OP_UNDEF, 0); | |
4347 | if (right->op_type == OP_READLINE) { | |
4348 | right->op_flags |= OPf_STACKED; | |
463ee0b2 | 4349 | return newBINOP(OP_NULL, flags, mod(scalar(left), OP_SASSIGN), scalar(right)); |
79072805 | 4350 | } |
a0d0e21e | 4351 | else { |
3280af22 | 4352 | PL_eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ |
11343788 | 4353 | o = newBINOP(OP_SASSIGN, flags, |
463ee0b2 | 4354 | scalar(right), mod(scalar(left), OP_SASSIGN) ); |
3280af22 NIS |
4355 | if (PL_eval_start) |
4356 | PL_eval_start = 0; | |
748a9306 | 4357 | else { |
27aaedc1 GG |
4358 | if (!PL_madskills) { /* assignment to $[ is ignored when making a mad dump */ |
4359 | op_free(o); | |
4360 | o = newSVOP(OP_CONST, 0, newSViv(CopARYBASE_get(&PL_compiling))); | |
4361 | o->op_private |= OPpCONST_ARYBASE; | |
4362 | } | |
a0d0e21e LW |
4363 | } |
4364 | } | |
11343788 | 4365 | return o; |
79072805 LW |
4366 | } |
4367 | ||
4368 | OP * | |
864dbfa3 | 4369 | Perl_newSTATEOP(pTHX_ I32 flags, char *label, OP *o) |
79072805 | 4370 | { |
27da23d5 | 4371 | dVAR; |
e1ec3a88 | 4372 | const U32 seq = intro_my(); |
79072805 LW |
4373 | register COP *cop; |
4374 | ||
b7dc083c | 4375 | NewOp(1101, cop, 1, COP); |
57843af0 | 4376 | if (PERLDB_LINE && CopLINE(PL_curcop) && PL_curstash != PL_debstash) { |
8990e307 | 4377 | cop->op_type = OP_DBSTATE; |
22c35a8c | 4378 | cop->op_ppaddr = PL_ppaddr[ OP_DBSTATE ]; |
8990e307 LW |
4379 | } |
4380 | else { | |
4381 | cop->op_type = OP_NEXTSTATE; | |
22c35a8c | 4382 | cop->op_ppaddr = PL_ppaddr[ OP_NEXTSTATE ]; |
8990e307 | 4383 | } |
eb160463 | 4384 | cop->op_flags = (U8)flags; |
623e6609 | 4385 | CopHINTS_set(cop, PL_hints); |
ff0cee69 | 4386 | #ifdef NATIVE_HINTS |
4387 | cop->op_private |= NATIVE_HINTS; | |
4388 | #endif | |
623e6609 | 4389 | CopHINTS_set(&PL_compiling, CopHINTS_get(cop)); |
79072805 LW |
4390 | cop->op_next = (OP*)cop; |
4391 | ||
bbce6d69 | 4392 | cop->cop_seq = seq; |
7b0bddfa | 4393 | /* CopARYBASE is now "virtual", in that it's stored as a flag bit in |
c28fe1ec NC |
4394 | CopHINTS and a possible value in cop_hints_hash, so no need to copy it. |
4395 | */ | |
72dc9ed5 | 4396 | cop->cop_warnings = DUP_WARNINGS(PL_curcop->cop_warnings); |
c28fe1ec NC |
4397 | cop->cop_hints_hash = PL_curcop->cop_hints_hash; |
4398 | if (cop->cop_hints_hash) { | |
cbb1fbea | 4399 | HINTS_REFCNT_LOCK; |
c28fe1ec | 4400 | cop->cop_hints_hash->refcounted_he_refcnt++; |
cbb1fbea | 4401 | HINTS_REFCNT_UNLOCK; |
b3ca2e83 | 4402 | } |
dca6062a | 4403 | if (label) { |
dca6062a | 4404 | cop->cop_hints_hash |
012da8e5 | 4405 | = Perl_store_cop_label(aTHX_ cop->cop_hints_hash, label); |
dca6062a NC |
4406 | |
4407 | PL_hints |= HINT_BLOCK_SCOPE; | |
4408 | /* It seems that we need to defer freeing this pointer, as other parts | |
4409 | of the grammar end up wanting to copy it after this op has been | |
4410 | created. */ | |
4411 | SAVEFREEPV(label); | |
dca6062a | 4412 | } |
79072805 | 4413 | |
53a7735b | 4414 | if (PL_parser && PL_parser->copline == NOLINE) |
57843af0 | 4415 | CopLINE_set(cop, CopLINE(PL_curcop)); |
79072805 | 4416 | else { |
53a7735b DM |
4417 | CopLINE_set(cop, PL_parser->copline); |
4418 | if (PL_parser) | |
4419 | PL_parser->copline = NOLINE; | |
79072805 | 4420 | } |
57843af0 | 4421 | #ifdef USE_ITHREADS |
f4dd75d9 | 4422 | CopFILE_set(cop, CopFILE(PL_curcop)); /* XXX share in a pvtable? */ |
57843af0 | 4423 | #else |
f4dd75d9 | 4424 | CopFILEGV_set(cop, CopFILEGV(PL_curcop)); |
57843af0 | 4425 | #endif |
11faa288 | 4426 | CopSTASH_set(cop, PL_curstash); |
79072805 | 4427 | |
65269a95 TB |
4428 | if ((PERLDB_LINE || PERLDB_SAVESRC) && PL_curstash != PL_debstash) { |
4429 | /* this line can have a breakpoint - store the cop in IV */ | |
80a702cd RGS |
4430 | AV *av = CopFILEAVx(PL_curcop); |
4431 | if (av) { | |
4432 | SV * const * const svp = av_fetch(av, (I32)CopLINE(cop), FALSE); | |
4433 | if (svp && *svp != &PL_sv_undef ) { | |
4434 | (void)SvIOK_on(*svp); | |
4435 | SvIV_set(*svp, PTR2IV(cop)); | |
4436 | } | |
1eb1540c | 4437 | } |
93a17b20 LW |
4438 | } |
4439 | ||
f6f3a1fe RGS |
4440 | if (flags & OPf_SPECIAL) |
4441 | op_null((OP*)cop); | |
722969e2 | 4442 | return prepend_elem(OP_LINESEQ, (OP*)cop, o); |
79072805 LW |
4443 | } |
4444 | ||
bbce6d69 | 4445 | |
79072805 | 4446 | OP * |
864dbfa3 | 4447 | Perl_newLOGOP(pTHX_ I32 type, I32 flags, OP *first, OP *other) |
79072805 | 4448 | { |
27da23d5 | 4449 | dVAR; |
7918f24d NC |
4450 | |
4451 | PERL_ARGS_ASSERT_NEWLOGOP; | |
4452 | ||
883ffac3 CS |
4453 | return new_logop(type, flags, &first, &other); |
4454 | } | |
4455 | ||
3bd495df | 4456 | STATIC OP * |
71c4dbc3 VP |
4457 | S_search_const(pTHX_ OP *o) |
4458 | { | |
4459 | PERL_ARGS_ASSERT_SEARCH_CONST; | |
4460 | ||
4461 | switch (o->op_type) { | |
4462 | case OP_CONST: | |
4463 | return o; | |
4464 | case OP_NULL: | |
4465 | if (o->op_flags & OPf_KIDS) | |
4466 | return search_const(cUNOPo->op_first); | |
4467 | break; | |
4468 | case OP_LEAVE: | |
4469 | case OP_SCOPE: | |
4470 | case OP_LINESEQ: | |
4471 | { | |
4472 | OP *kid; | |
4473 | if (!(o->op_flags & OPf_KIDS)) | |
4474 | return NULL; | |
4475 | kid = cLISTOPo->op_first; | |
4476 | do { | |
4477 | switch (kid->op_type) { | |
4478 | case OP_ENTER: | |
4479 | case OP_NULL: | |
4480 | case OP_NEXTSTATE: | |
4481 | kid = kid->op_sibling; | |
4482 | break; | |
4483 | default: | |
4484 | if (kid != cLISTOPo->op_last) | |
4485 | return NULL; | |
4486 | goto last; | |
4487 | } | |
4488 | } while (kid); | |
4489 | if (!kid) | |
4490 | kid = cLISTOPo->op_last; | |
4491 | last: | |
4492 | return search_const(kid); | |
4493 | } | |
4494 | } | |
4495 | ||
4496 | return NULL; | |
4497 | } | |
4498 | ||
4499 | STATIC OP * | |
cea2e8a9 | 4500 | S_new_logop(pTHX_ I32 type, I32 flags, OP** firstp, OP** otherp) |
883ffac3 | 4501 | { |
27da23d5 | 4502 | dVAR; |
79072805 | 4503 | LOGOP *logop; |
11343788 | 4504 | OP *o; |
71c4dbc3 VP |
4505 | OP *first; |
4506 | OP *other; | |
4507 | OP *cstop = NULL; | |
edbe35ea | 4508 | int prepend_not = 0; |
79072805 | 4509 | |
7918f24d NC |
4510 | PERL_ARGS_ASSERT_NEW_LOGOP; |
4511 | ||
71c4dbc3 VP |
4512 | first = *firstp; |
4513 | other = *otherp; | |
4514 | ||
a0d0e21e LW |
4515 | if (type == OP_XOR) /* Not short circuit, but here by precedence. */ |
4516 | return newBINOP(type, flags, scalar(first), scalar(other)); | |
4517 | ||
8990e307 | 4518 | scalarboolean(first); |
edbe35ea | 4519 | /* optimize AND and OR ops that have NOTs as children */ |
68726e16 | 4520 | if (first->op_type == OP_NOT |
b6214b80 | 4521 | && (first->op_flags & OPf_KIDS) |
edbe35ea VP |
4522 | && ((first->op_flags & OPf_SPECIAL) /* unless ($x) { } */ |
4523 | || (other->op_type == OP_NOT)) /* if (!$x && !$y) { } */ | |
b6214b80 | 4524 | && !PL_madskills) { |
79072805 LW |
4525 | if (type == OP_AND || type == OP_OR) { |
4526 | if (type == OP_AND) | |
4527 | type = OP_OR; | |
4528 | else | |
4529 | type = OP_AND; | |
07f3cdf5 | 4530 | op_null(first); |
edbe35ea | 4531 | if (other->op_type == OP_NOT) { /* !a AND|OR !b => !(a OR|AND b) */ |
07f3cdf5 | 4532 | op_null(other); |
edbe35ea VP |
4533 | prepend_not = 1; /* prepend a NOT op later */ |
4534 | } | |
79072805 LW |
4535 | } |
4536 | } | |
71c4dbc3 VP |
4537 | /* search for a constant op that could let us fold the test */ |
4538 | if ((cstop = search_const(first))) { | |
4539 | if (cstop->op_private & OPpCONST_STRICT) | |
4540 | no_bareword_allowed(cstop); | |
4541 | else if ((cstop->op_private & OPpCONST_BARE) && ckWARN(WARN_BAREWORD)) | |
989dfb19 | 4542 | Perl_warner(aTHX_ packWARN(WARN_BAREWORD), "Bareword found in conditional"); |
71c4dbc3 VP |
4543 | if ((type == OP_AND && SvTRUE(((SVOP*)cstop)->op_sv)) || |
4544 | (type == OP_OR && !SvTRUE(((SVOP*)cstop)->op_sv)) || | |
4545 | (type == OP_DOR && !SvOK(((SVOP*)cstop)->op_sv))) { | |
5f66b61c | 4546 | *firstp = NULL; |
d6fee5c7 DM |
4547 | if (other->op_type == OP_CONST) |
4548 | other->op_private |= OPpCONST_SHORTCIRCUIT; | |
eb8433b7 NC |
4549 | if (PL_madskills) { |
4550 | OP *newop = newUNOP(OP_NULL, 0, other); | |
4551 | op_getmad(first, newop, '1'); | |
4552 | newop->op_targ = type; /* set "was" field */ | |
4553 | return newop; | |
4554 | } | |
4555 | op_free(first); | |
79072805 LW |
4556 | return other; |
4557 | } | |
4558 | else { | |
7921d0f2 | 4559 | /* check for C<my $x if 0>, or C<my($x,$y) if 0> */ |
6867be6d | 4560 | const OP *o2 = other; |
7921d0f2 DM |
4561 | if ( ! (o2->op_type == OP_LIST |
4562 | && (( o2 = cUNOPx(o2)->op_first)) | |
4563 | && o2->op_type == OP_PUSHMARK | |
4564 | && (( o2 = o2->op_sibling)) ) | |
4565 | ) | |
4566 | o2 = other; | |
4567 | if ((o2->op_type == OP_PADSV || o2->op_type == OP_PADAV | |
4568 | || o2->op_type == OP_PADHV) | |
4569 | && o2->op_private & OPpLVAL_INTRO | |
52351015 | 4570 | && !(o2->op_private & OPpPAD_STATE) |
7921d0f2 DM |
4571 | && ckWARN(WARN_DEPRECATED)) |
4572 | { | |
4573 | Perl_warner(aTHX_ packWARN(WARN_DEPRECATED), | |
4574 | "Deprecated use of my() in false conditional"); | |
4575 | } | |
4576 | ||
5f66b61c | 4577 | *otherp = NULL; |
d6fee5c7 DM |
4578 | if (first->op_type == OP_CONST) |
4579 | first->op_private |= OPpCONST_SHORTCIRCUIT; | |
eb8433b7 NC |
4580 | if (PL_madskills) { |
4581 | first = newUNOP(OP_NULL, 0, first); | |
4582 | op_getmad(other, first, '2'); | |
4583 | first->op_targ = type; /* set "was" field */ | |
4584 | } | |
4585 | else | |
4586 | op_free(other); | |
79072805 LW |
4587 | return first; |
4588 | } | |
4589 | } | |
041457d9 DM |
4590 | else if ((first->op_flags & OPf_KIDS) && type != OP_DOR |
4591 | && ckWARN(WARN_MISC)) /* [#24076] Don't warn for <FH> err FOO. */ | |
59e10468 | 4592 | { |
b22e6366 AL |
4593 | const OP * const k1 = ((UNOP*)first)->op_first; |
4594 | const OP * const k2 = k1->op_sibling; | |
a6006777 | 4595 | OPCODE warnop = 0; |
4596 | switch (first->op_type) | |
4597 | { | |
4598 | case OP_NULL: | |
4599 | if (k2 && k2->op_type == OP_READLINE | |
4600 | && (k2->op_flags & OPf_STACKED) | |
1c846c1f | 4601 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
72b16652 | 4602 | { |
a6006777 | 4603 | warnop = k2->op_type; |
72b16652 | 4604 | } |
a6006777 | 4605 | break; |
4606 | ||
4607 | case OP_SASSIGN: | |
68dc0745 | 4608 | if (k1->op_type == OP_READDIR |
4609 | || k1->op_type == OP_GLOB | |
72b16652 | 4610 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) |
68dc0745 | 4611 | || k1->op_type == OP_EACH) |
72b16652 GS |
4612 | { |
4613 | warnop = ((k1->op_type == OP_NULL) | |
eb160463 | 4614 | ? (OPCODE)k1->op_targ : k1->op_type); |
72b16652 | 4615 | } |
a6006777 | 4616 | break; |
4617 | } | |
8ebc5c01 | 4618 | if (warnop) { |
6867be6d | 4619 | const line_t oldline = CopLINE(PL_curcop); |
53a7735b | 4620 | CopLINE_set(PL_curcop, PL_parser->copline); |
9014280d | 4621 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
599cee73 | 4622 | "Value of %s%s can be \"0\"; test with defined()", |
22c35a8c | 4623 | PL_op_desc[warnop], |
68dc0745 | 4624 | ((warnop == OP_READLINE || warnop == OP_GLOB) |
4625 | ? " construct" : "() operator")); | |
57843af0 | 4626 | CopLINE_set(PL_curcop, oldline); |
8ebc5c01 | 4627 | } |
a6006777 | 4628 | } |
79072805 LW |
4629 | |
4630 | if (!other) | |
4631 | return first; | |
4632 | ||
c963b151 | 4633 | if (type == OP_ANDASSIGN || type == OP_ORASSIGN || type == OP_DORASSIGN) |
a0d0e21e LW |
4634 | other->op_private |= OPpASSIGN_BACKWARDS; /* other is an OP_SASSIGN */ |
4635 | ||
b7dc083c | 4636 | NewOp(1101, logop, 1, LOGOP); |
79072805 | 4637 | |
eb160463 | 4638 | logop->op_type = (OPCODE)type; |
22c35a8c | 4639 | logop->op_ppaddr = PL_ppaddr[type]; |
79072805 | 4640 | logop->op_first = first; |
585ec06d | 4641 | logop->op_flags = (U8)(flags | OPf_KIDS); |
79072805 | 4642 | logop->op_other = LINKLIST(other); |
eb160463 | 4643 | logop->op_private = (U8)(1 | (flags >> 8)); |
79072805 LW |
4644 | |
4645 | /* establish postfix order */ | |
4646 | logop->op_next = LINKLIST(first); | |
4647 | first->op_next = (OP*)logop; | |
4648 | first->op_sibling = other; | |
4649 | ||
463d09e6 RGS |
4650 | CHECKOP(type,logop); |
4651 | ||
edbe35ea | 4652 | o = newUNOP(prepend_not ? OP_NOT : OP_NULL, 0, (OP*)logop); |
11343788 | 4653 | other->op_next = o; |
79072805 | 4654 | |
11343788 | 4655 | return o; |
79072805 LW |
4656 | } |
4657 | ||
4658 | OP * | |
864dbfa3 | 4659 | Perl_newCONDOP(pTHX_ I32 flags, OP *first, OP *trueop, OP *falseop) |
79072805 | 4660 | { |
27da23d5 | 4661 | dVAR; |
1a67a97c SM |
4662 | LOGOP *logop; |
4663 | OP *start; | |
11343788 | 4664 | OP *o; |
71c4dbc3 | 4665 | OP *cstop; |
79072805 | 4666 | |
7918f24d NC |
4667 | PERL_ARGS_ASSERT_NEWCONDOP; |
4668 | ||
b1cb66bf | 4669 | if (!falseop) |
4670 | return newLOGOP(OP_AND, 0, first, trueop); | |
4671 | if (!trueop) | |
4672 | return newLOGOP(OP_OR, 0, first, falseop); | |
79072805 | 4673 | |
8990e307 | 4674 | scalarboolean(first); |
71c4dbc3 | 4675 | if ((cstop = search_const(first))) { |
5b6782b2 | 4676 | /* Left or right arm of the conditional? */ |
71c4dbc3 | 4677 | const bool left = SvTRUE(((SVOP*)cstop)->op_sv); |
5b6782b2 NC |
4678 | OP *live = left ? trueop : falseop; |
4679 | OP *const dead = left ? falseop : trueop; | |
71c4dbc3 VP |
4680 | if (cstop->op_private & OPpCONST_BARE && |
4681 | cstop->op_private & OPpCONST_STRICT) { | |
4682 | no_bareword_allowed(cstop); | |
b22e6366 | 4683 | } |
5b6782b2 NC |
4684 | if (PL_madskills) { |
4685 | /* This is all dead code when PERL_MAD is not defined. */ | |
4686 | live = newUNOP(OP_NULL, 0, live); | |
4687 | op_getmad(first, live, 'C'); | |
4688 | op_getmad(dead, live, left ? 'e' : 't'); | |
4689 | } else { | |
4690 | op_free(first); | |
4691 | op_free(dead); | |
79072805 | 4692 | } |
5b6782b2 | 4693 | return live; |
79072805 | 4694 | } |
1a67a97c SM |
4695 | NewOp(1101, logop, 1, LOGOP); |
4696 | logop->op_type = OP_COND_EXPR; | |
4697 | logop->op_ppaddr = PL_ppaddr[OP_COND_EXPR]; | |
4698 | logop->op_first = first; | |
585ec06d | 4699 | logop->op_flags = (U8)(flags | OPf_KIDS); |
eb160463 | 4700 | logop->op_private = (U8)(1 | (flags >> 8)); |
1a67a97c SM |
4701 | logop->op_other = LINKLIST(trueop); |
4702 | logop->op_next = LINKLIST(falseop); | |
79072805 | 4703 | |
463d09e6 RGS |
4704 | CHECKOP(OP_COND_EXPR, /* that's logop->op_type */ |
4705 | logop); | |
79072805 LW |
4706 | |
4707 | /* establish postfix order */ | |
1a67a97c SM |
4708 | start = LINKLIST(first); |
4709 | first->op_next = (OP*)logop; | |
79072805 | 4710 | |
b1cb66bf | 4711 | first->op_sibling = trueop; |
4712 | trueop->op_sibling = falseop; | |
1a67a97c | 4713 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
79072805 | 4714 | |
1a67a97c | 4715 | trueop->op_next = falseop->op_next = o; |
79072805 | 4716 | |
1a67a97c | 4717 | o->op_next = start; |
11343788 | 4718 | return o; |
79072805 LW |
4719 | } |
4720 | ||
4721 | OP * | |
864dbfa3 | 4722 | Perl_newRANGE(pTHX_ I32 flags, OP *left, OP *right) |
79072805 | 4723 | { |
27da23d5 | 4724 | dVAR; |
1a67a97c | 4725 | LOGOP *range; |
79072805 LW |
4726 | OP *flip; |
4727 | OP *flop; | |
1a67a97c | 4728 | OP *leftstart; |
11343788 | 4729 | OP *o; |
79072805 | 4730 | |
7918f24d NC |
4731 | PERL_ARGS_ASSERT_NEWRANGE; |
4732 | ||
1a67a97c | 4733 | NewOp(1101, range, 1, LOGOP); |
79072805 | 4734 | |
1a67a97c SM |
4735 | range->op_type = OP_RANGE; |
4736 | range->op_ppaddr = PL_ppaddr[OP_RANGE]; | |
4737 | range->op_first = left; | |
4738 | range->op_flags = OPf_KIDS; | |
4739 | leftstart = LINKLIST(left); | |
4740 | range->op_other = LINKLIST(right); | |
eb160463 | 4741 | range->op_private = (U8)(1 | (flags >> 8)); |
79072805 LW |
4742 | |
4743 | left->op_sibling = right; | |
4744 | ||
1a67a97c SM |
4745 | range->op_next = (OP*)range; |
4746 | flip = newUNOP(OP_FLIP, flags, (OP*)range); | |
79072805 | 4747 | flop = newUNOP(OP_FLOP, 0, flip); |
11343788 | 4748 | o = newUNOP(OP_NULL, 0, flop); |
79072805 | 4749 | linklist(flop); |
1a67a97c | 4750 | range->op_next = leftstart; |
79072805 LW |
4751 | |
4752 | left->op_next = flip; | |
4753 | right->op_next = flop; | |
4754 | ||
1a67a97c SM |
4755 | range->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
4756 | sv_upgrade(PAD_SV(range->op_targ), SVt_PVNV); | |
ed6116ce | 4757 | flip->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 LW |
4758 | sv_upgrade(PAD_SV(flip->op_targ), SVt_PVNV); |
4759 | ||
4760 | flip->op_private = left->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
4761 | flop->op_private = right->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
4762 | ||
11343788 | 4763 | flip->op_next = o; |
79072805 | 4764 | if (!flip->op_private || !flop->op_private) |
11343788 | 4765 | linklist(o); /* blow off optimizer unless constant */ |
79072805 | 4766 | |
11343788 | 4767 | return o; |
79072805 LW |
4768 | } |
4769 | ||
4770 | OP * | |
864dbfa3 | 4771 | Perl_newLOOPOP(pTHX_ I32 flags, I32 debuggable, OP *expr, OP *block) |
79072805 | 4772 | { |
97aff369 | 4773 | dVAR; |
463ee0b2 | 4774 | OP* listop; |
11343788 | 4775 | OP* o; |
73d840c0 | 4776 | const bool once = block && block->op_flags & OPf_SPECIAL && |
a0d0e21e | 4777 | (block->op_type == OP_ENTERSUB || block->op_type == OP_NULL); |
46c461b5 AL |
4778 | |
4779 | PERL_UNUSED_ARG(debuggable); | |
93a17b20 | 4780 | |
463ee0b2 LW |
4781 | if (expr) { |
4782 | if (once && expr->op_type == OP_CONST && !SvTRUE(((SVOP*)expr)->op_sv)) | |
4783 | return block; /* do {} while 0 does once */ | |
fb73857a | 4784 | if (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB |
4785 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB)) { | |
774d564b | 4786 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 4787 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 | 4788 | } else if (expr->op_flags & OPf_KIDS) { |
46c461b5 AL |
4789 | const OP * const k1 = ((UNOP*)expr)->op_first; |
4790 | const OP * const k2 = k1 ? k1->op_sibling : NULL; | |
55d729e4 | 4791 | switch (expr->op_type) { |
1c846c1f | 4792 | case OP_NULL: |
55d729e4 GS |
4793 | if (k2 && k2->op_type == OP_READLINE |
4794 | && (k2->op_flags & OPf_STACKED) | |
1c846c1f | 4795 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
55d729e4 | 4796 | expr = newUNOP(OP_DEFINED, 0, expr); |
1c846c1f | 4797 | break; |
55d729e4 GS |
4798 | |
4799 | case OP_SASSIGN: | |
06dc7ac6 | 4800 | if (k1 && (k1->op_type == OP_READDIR |
55d729e4 | 4801 | || k1->op_type == OP_GLOB |
6531c3e6 | 4802 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) |
06dc7ac6 | 4803 | || k1->op_type == OP_EACH)) |
55d729e4 GS |
4804 | expr = newUNOP(OP_DEFINED, 0, expr); |
4805 | break; | |
4806 | } | |
774d564b | 4807 | } |
463ee0b2 | 4808 | } |
93a17b20 | 4809 | |
e1548254 RGS |
4810 | /* if block is null, the next append_elem() would put UNSTACK, a scalar |
4811 | * op, in listop. This is wrong. [perl #27024] */ | |
4812 | if (!block) | |
4813 | block = newOP(OP_NULL, 0); | |
8990e307 | 4814 | listop = append_elem(OP_LINESEQ, block, newOP(OP_UNSTACK, 0)); |
883ffac3 | 4815 | o = new_logop(OP_AND, 0, &expr, &listop); |
463ee0b2 | 4816 | |
883ffac3 CS |
4817 | if (listop) |
4818 | ((LISTOP*)listop)->op_last->op_next = LINKLIST(o); | |
79072805 | 4819 | |
11343788 MB |
4820 | if (once && o != listop) |
4821 | o->op_next = ((LOGOP*)cUNOPo->op_first)->op_other; | |
79072805 | 4822 | |
11343788 MB |
4823 | if (o == listop) |
4824 | o = newUNOP(OP_NULL, 0, o); /* or do {} while 1 loses outer block */ | |
748a9306 | 4825 | |
11343788 MB |
4826 | o->op_flags |= flags; |
4827 | o = scope(o); | |
4828 | o->op_flags |= OPf_SPECIAL; /* suppress POPBLOCK curpm restoration*/ | |
4829 | return o; | |
79072805 LW |
4830 | } |
4831 | ||
4832 | OP * | |
a034e688 DM |
4833 | Perl_newWHILEOP(pTHX_ I32 flags, I32 debuggable, LOOP *loop, I32 |
4834 | whileline, OP *expr, OP *block, OP *cont, I32 has_my) | |
79072805 | 4835 | { |
27da23d5 | 4836 | dVAR; |
79072805 | 4837 | OP *redo; |
c445ea15 | 4838 | OP *next = NULL; |
79072805 | 4839 | OP *listop; |
11343788 | 4840 | OP *o; |
1ba6ee2b | 4841 | U8 loopflags = 0; |
46c461b5 AL |
4842 | |
4843 | PERL_UNUSED_ARG(debuggable); | |
79072805 | 4844 | |
2d03de9c AL |
4845 | if (expr) { |
4846 | if (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB | |
4847 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB)) { | |
4848 | expr = newUNOP(OP_DEFINED, 0, | |
4849 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); | |
4850 | } else if (expr->op_flags & OPf_KIDS) { | |
4851 | const OP * const k1 = ((UNOP*)expr)->op_first; | |
4852 | const OP * const k2 = (k1) ? k1->op_sibling : NULL; | |
4853 | switch (expr->op_type) { | |
4854 | case OP_NULL: | |
4855 | if (k2 && k2->op_type == OP_READLINE | |
4856 | && (k2->op_flags & OPf_STACKED) | |
4857 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) | |
4858 | expr = newUNOP(OP_DEFINED, 0, expr); | |
4859 | break; | |
55d729e4 | 4860 | |
2d03de9c | 4861 | case OP_SASSIGN: |
72c8de1a | 4862 | if (k1 && (k1->op_type == OP_READDIR |
2d03de9c AL |
4863 | || k1->op_type == OP_GLOB |
4864 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) | |
72c8de1a | 4865 | || k1->op_type == OP_EACH)) |
2d03de9c AL |
4866 | expr = newUNOP(OP_DEFINED, 0, expr); |
4867 | break; | |
4868 | } | |
55d729e4 | 4869 | } |
748a9306 | 4870 | } |
79072805 LW |
4871 | |
4872 | if (!block) | |
4873 | block = newOP(OP_NULL, 0); | |
a034e688 | 4874 | else if (cont || has_my) { |
87246558 GS |
4875 | block = scope(block); |
4876 | } | |
79072805 | 4877 | |
1ba6ee2b | 4878 | if (cont) { |
79072805 | 4879 | next = LINKLIST(cont); |
1ba6ee2b | 4880 | } |
fb73857a | 4881 | if (expr) { |
551405c4 | 4882 | OP * const unstack = newOP(OP_UNSTACK, 0); |
85538317 GS |
4883 | if (!next) |
4884 | next = unstack; | |
4885 | cont = append_elem(OP_LINESEQ, cont, unstack); | |
fb73857a | 4886 | } |
79072805 | 4887 | |
ce3e5c45 | 4888 | assert(block); |
463ee0b2 | 4889 | listop = append_list(OP_LINESEQ, (LISTOP*)block, (LISTOP*)cont); |
ce3e5c45 | 4890 | assert(listop); |
79072805 LW |
4891 | redo = LINKLIST(listop); |
4892 | ||
4893 | if (expr) { | |
53a7735b | 4894 | PL_parser->copline = (line_t)whileline; |
883ffac3 CS |
4895 | scalar(listop); |
4896 | o = new_logop(OP_AND, 0, &expr, &listop); | |
11343788 | 4897 | if (o == expr && o->op_type == OP_CONST && !SvTRUE(cSVOPo->op_sv)) { |
85e6fe83 | 4898 | op_free(expr); /* oops, it's a while (0) */ |
463ee0b2 | 4899 | op_free((OP*)loop); |
5f66b61c | 4900 | return NULL; /* listop already freed by new_logop */ |
463ee0b2 | 4901 | } |
883ffac3 | 4902 | if (listop) |
497b47a8 | 4903 | ((LISTOP*)listop)->op_last->op_next = |
883ffac3 | 4904 | (o == listop ? redo : LINKLIST(o)); |
79072805 LW |
4905 | } |
4906 | else | |
11343788 | 4907 | o = listop; |
79072805 LW |
4908 | |
4909 | if (!loop) { | |
b7dc083c | 4910 | NewOp(1101,loop,1,LOOP); |
79072805 | 4911 | loop->op_type = OP_ENTERLOOP; |
22c35a8c | 4912 | loop->op_ppaddr = PL_ppaddr[OP_ENTERLOOP]; |
79072805 LW |
4913 | loop->op_private = 0; |
4914 | loop->op_next = (OP*)loop; | |
4915 | } | |
4916 | ||
11343788 | 4917 | o = newBINOP(OP_LEAVELOOP, 0, (OP*)loop, o); |
79072805 LW |
4918 | |
4919 | loop->op_redoop = redo; | |
11343788 | 4920 | loop->op_lastop = o; |
1ba6ee2b | 4921 | o->op_private |= loopflags; |
79072805 LW |
4922 | |
4923 | if (next) | |
4924 | loop->op_nextop = next; | |
4925 | else | |
11343788 | 4926 | loop->op_nextop = o; |
79072805 | 4927 | |
11343788 MB |
4928 | o->op_flags |= flags; |
4929 | o->op_private |= (flags >> 8); | |
4930 | return o; | |
79072805 LW |
4931 | } |
4932 | ||
4933 | OP * | |
66a1b24b | 4934 | Perl_newFOROP(pTHX_ I32 flags, char *label, line_t forline, OP *sv, OP *expr, OP *block, OP *cont) |
79072805 | 4935 | { |
27da23d5 | 4936 | dVAR; |
79072805 | 4937 | LOOP *loop; |
fb73857a | 4938 | OP *wop; |
4bbc6d12 | 4939 | PADOFFSET padoff = 0; |
4633a7c4 | 4940 | I32 iterflags = 0; |
241416b8 | 4941 | I32 iterpflags = 0; |
d4c19fe8 | 4942 | OP *madsv = NULL; |
79072805 | 4943 | |
7918f24d NC |
4944 | PERL_ARGS_ASSERT_NEWFOROP; |
4945 | ||
79072805 | 4946 | if (sv) { |
85e6fe83 | 4947 | if (sv->op_type == OP_RV2SV) { /* symbol table variable */ |
241416b8 | 4948 | iterpflags = sv->op_private & OPpOUR_INTRO; /* for our $x () */ |
748a9306 | 4949 | sv->op_type = OP_RV2GV; |
22c35a8c | 4950 | sv->op_ppaddr = PL_ppaddr[OP_RV2GV]; |
0be9a6bb RH |
4951 | |
4952 | /* The op_type check is needed to prevent a possible segfault | |
4953 | * if the loop variable is undeclared and 'strict vars' is in | |
4954 | * effect. This is illegal but is nonetheless parsed, so we | |
4955 | * may reach this point with an OP_CONST where we're expecting | |
4956 | * an OP_GV. | |
4957 | */ | |
4958 | if (cUNOPx(sv)->op_first->op_type == OP_GV | |
4959 | && cGVOPx_gv(cUNOPx(sv)->op_first) == PL_defgv) | |
0d863452 | 4960 | iterpflags |= OPpITER_DEF; |
79072805 | 4961 | } |
85e6fe83 | 4962 | else if (sv->op_type == OP_PADSV) { /* private variable */ |
241416b8 | 4963 | iterpflags = sv->op_private & OPpLVAL_INTRO; /* for my $x () */ |
85e6fe83 | 4964 | padoff = sv->op_targ; |
eb8433b7 NC |
4965 | if (PL_madskills) |
4966 | madsv = sv; | |
4967 | else { | |
4968 | sv->op_targ = 0; | |
4969 | op_free(sv); | |
4970 | } | |
5f66b61c | 4971 | sv = NULL; |
85e6fe83 | 4972 | } |
79072805 | 4973 | else |
cea2e8a9 | 4974 | Perl_croak(aTHX_ "Can't use %s for loop variable", PL_op_desc[sv->op_type]); |
f8503592 NC |
4975 | if (padoff) { |
4976 | SV *const namesv = PAD_COMPNAME_SV(padoff); | |
4977 | STRLEN len; | |
4978 | const char *const name = SvPV_const(namesv, len); | |
4979 | ||
4980 | if (len == 2 && name[0] == '$' && name[1] == '_') | |
4981 | iterpflags |= OPpITER_DEF; | |
4982 | } | |
79072805 LW |
4983 | } |
4984 | else { | |
9f7d9405 | 4985 | const PADOFFSET offset = pad_findmy("$_"); |
00b1698f | 4986 | if (offset == NOT_IN_PAD || PAD_COMPNAME_FLAGS_isOUR(offset)) { |
aabe9514 RGS |
4987 | sv = newGVOP(OP_GV, 0, PL_defgv); |
4988 | } | |
4989 | else { | |
4990 | padoff = offset; | |
aabe9514 | 4991 | } |
0d863452 | 4992 | iterpflags |= OPpITER_DEF; |
79072805 | 4993 | } |
5f05dabc | 4994 | if (expr->op_type == OP_RV2AV || expr->op_type == OP_PADAV) { |
89ea2908 | 4995 | expr = mod(force_list(scalar(ref(expr, OP_ITER))), OP_GREPSTART); |
4633a7c4 LW |
4996 | iterflags |= OPf_STACKED; |
4997 | } | |
89ea2908 GA |
4998 | else if (expr->op_type == OP_NULL && |
4999 | (expr->op_flags & OPf_KIDS) && | |
5000 | ((BINOP*)expr)->op_first->op_type == OP_FLOP) | |
5001 | { | |
5002 | /* Basically turn for($x..$y) into the same as for($x,$y), but we | |
5003 | * set the STACKED flag to indicate that these values are to be | |
5004 | * treated as min/max values by 'pp_iterinit'. | |
5005 | */ | |
d4c19fe8 | 5006 | const UNOP* const flip = (UNOP*)((UNOP*)((BINOP*)expr)->op_first)->op_first; |
551405c4 | 5007 | LOGOP* const range = (LOGOP*) flip->op_first; |
66a1b24b AL |
5008 | OP* const left = range->op_first; |
5009 | OP* const right = left->op_sibling; | |
5152d7c7 | 5010 | LISTOP* listop; |
89ea2908 GA |
5011 | |
5012 | range->op_flags &= ~OPf_KIDS; | |
5f66b61c | 5013 | range->op_first = NULL; |
89ea2908 | 5014 | |
5152d7c7 | 5015 | listop = (LISTOP*)newLISTOP(OP_LIST, 0, left, right); |
1a67a97c SM |
5016 | listop->op_first->op_next = range->op_next; |
5017 | left->op_next = range->op_other; | |
5152d7c7 GS |
5018 | right->op_next = (OP*)listop; |
5019 | listop->op_next = listop->op_first; | |
89ea2908 | 5020 | |
eb8433b7 NC |
5021 | #ifdef PERL_MAD |
5022 | op_getmad(expr,(OP*)listop,'O'); | |
5023 | #else | |
89ea2908 | 5024 | op_free(expr); |
eb8433b7 | 5025 | #endif |
5152d7c7 | 5026 | expr = (OP*)(listop); |
93c66552 | 5027 | op_null(expr); |
89ea2908 GA |
5028 | iterflags |= OPf_STACKED; |
5029 | } | |
5030 | else { | |
5031 | expr = mod(force_list(expr), OP_GREPSTART); | |
5032 | } | |
5033 | ||
4633a7c4 | 5034 | loop = (LOOP*)list(convert(OP_ENTERITER, iterflags, |
89ea2908 | 5035 | append_elem(OP_LIST, expr, scalar(sv)))); |
85e6fe83 | 5036 | assert(!loop->op_next); |
241416b8 | 5037 | /* for my $x () sets OPpLVAL_INTRO; |
14f338dc | 5038 | * for our $x () sets OPpOUR_INTRO */ |
c5661c80 | 5039 | loop->op_private = (U8)iterpflags; |
b7dc083c | 5040 | #ifdef PL_OP_SLAB_ALLOC |
155aba94 GS |
5041 | { |
5042 | LOOP *tmp; | |
5043 | NewOp(1234,tmp,1,LOOP); | |
bd5f3bc4 | 5044 | Copy(loop,tmp,1,LISTOP); |
bfafaa29 | 5045 | S_op_destroy(aTHX_ (OP*)loop); |
155aba94 GS |
5046 | loop = tmp; |
5047 | } | |
b7dc083c | 5048 | #else |
10edeb5d | 5049 | loop = (LOOP*)PerlMemShared_realloc(loop, sizeof(LOOP)); |
1c846c1f | 5050 | #endif |
85e6fe83 | 5051 | loop->op_targ = padoff; |
a034e688 | 5052 | wop = newWHILEOP(flags, 1, loop, forline, newOP(OP_ITER, 0), block, cont, 0); |
eb8433b7 NC |
5053 | if (madsv) |
5054 | op_getmad(madsv, (OP*)loop, 'v'); | |
53a7735b | 5055 | PL_parser->copline = forline; |
fb73857a | 5056 | return newSTATEOP(0, label, wop); |
79072805 LW |
5057 | } |
5058 | ||
8990e307 | 5059 | OP* |
864dbfa3 | 5060 | Perl_newLOOPEX(pTHX_ I32 type, OP *label) |
8990e307 | 5061 | { |
97aff369 | 5062 | dVAR; |
11343788 | 5063 | OP *o; |
2d8e6c8d | 5064 | |
7918f24d NC |
5065 | PERL_ARGS_ASSERT_NEWLOOPEX; |
5066 | ||
8990e307 | 5067 | if (type != OP_GOTO || label->op_type == OP_CONST) { |
cdaebead MB |
5068 | /* "last()" means "last" */ |
5069 | if (label->op_type == OP_STUB && (label->op_flags & OPf_PARENS)) | |
5070 | o = newOP(type, OPf_SPECIAL); | |
5071 | else { | |
ea71c68d | 5072 | o = newPVOP(type, 0, savesharedpv(label->op_type == OP_CONST |
4ea561bc | 5073 | ? SvPV_nolen_const(((SVOP*)label)->op_sv) |
666ea192 | 5074 | : "")); |
cdaebead | 5075 | } |
eb8433b7 NC |
5076 | #ifdef PERL_MAD |
5077 | op_getmad(label,o,'L'); | |
5078 | #else | |
8990e307 | 5079 | op_free(label); |
eb8433b7 | 5080 | #endif |
8990e307 LW |
5081 | } |
5082 | else { | |
e3aba57a RGS |
5083 | /* Check whether it's going to be a goto &function */ |
5084 | if (label->op_type == OP_ENTERSUB | |
5085 | && !(label->op_flags & OPf_STACKED)) | |
a0d0e21e | 5086 | label = newUNOP(OP_REFGEN, 0, mod(label, OP_REFGEN)); |
11343788 | 5087 | o = newUNOP(type, OPf_STACKED, label); |
8990e307 | 5088 | } |
3280af22 | 5089 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 5090 | return o; |
8990e307 LW |
5091 | } |
5092 | ||
0d863452 RH |
5093 | /* if the condition is a literal array or hash |
5094 | (or @{ ... } etc), make a reference to it. | |
5095 | */ | |
5096 | STATIC OP * | |
5097 | S_ref_array_or_hash(pTHX_ OP *cond) | |
5098 | { | |
5099 | if (cond | |
5100 | && (cond->op_type == OP_RV2AV | |
5101 | || cond->op_type == OP_PADAV | |
5102 | || cond->op_type == OP_RV2HV | |
5103 | || cond->op_type == OP_PADHV)) | |
5104 | ||
5105 | return newUNOP(OP_REFGEN, | |
5106 | 0, mod(cond, OP_REFGEN)); | |
5107 | ||
5108 | else | |
5109 | return cond; | |
5110 | } | |
5111 | ||
5112 | /* These construct the optree fragments representing given() | |
5113 | and when() blocks. | |
5114 | ||
5115 | entergiven and enterwhen are LOGOPs; the op_other pointer | |
5116 | points up to the associated leave op. We need this so we | |
5117 | can put it in the context and make break/continue work. | |
5118 | (Also, of course, pp_enterwhen will jump straight to | |
5119 | op_other if the match fails.) | |
5120 | */ | |
5121 | ||
4136a0f7 | 5122 | STATIC OP * |
0d863452 RH |
5123 | S_newGIVWHENOP(pTHX_ OP *cond, OP *block, |
5124 | I32 enter_opcode, I32 leave_opcode, | |
5125 | PADOFFSET entertarg) | |
5126 | { | |
97aff369 | 5127 | dVAR; |
0d863452 RH |
5128 | LOGOP *enterop; |
5129 | OP *o; | |
5130 | ||
7918f24d NC |
5131 | PERL_ARGS_ASSERT_NEWGIVWHENOP; |
5132 | ||
0d863452 | 5133 | NewOp(1101, enterop, 1, LOGOP); |
61a59f30 | 5134 | enterop->op_type = (Optype)enter_opcode; |
0d863452 RH |
5135 | enterop->op_ppaddr = PL_ppaddr[enter_opcode]; |
5136 | enterop->op_flags = (U8) OPf_KIDS; | |
5137 | enterop->op_targ = ((entertarg == NOT_IN_PAD) ? 0 : entertarg); | |
5138 | enterop->op_private = 0; | |
5139 | ||
5140 | o = newUNOP(leave_opcode, 0, (OP *) enterop); | |
5141 | ||
5142 | if (cond) { | |
5143 | enterop->op_first = scalar(cond); | |
5144 | cond->op_sibling = block; | |
5145 | ||
5146 | o->op_next = LINKLIST(cond); | |
5147 | cond->op_next = (OP *) enterop; | |
5148 | } | |
5149 | else { | |
5150 | /* This is a default {} block */ | |
5151 | enterop->op_first = block; | |
5152 | enterop->op_flags |= OPf_SPECIAL; | |
5153 | ||
5154 | o->op_next = (OP *) enterop; | |
5155 | } | |
5156 | ||
5157 | CHECKOP(enter_opcode, enterop); /* Currently does nothing, since | |
5158 | entergiven and enterwhen both | |
5159 | use ck_null() */ | |
5160 | ||
5161 | enterop->op_next = LINKLIST(block); | |
5162 | block->op_next = enterop->op_other = o; | |
5163 | ||
5164 | return o; | |
5165 | } | |
5166 | ||
5167 | /* Does this look like a boolean operation? For these purposes | |
5168 | a boolean operation is: | |
5169 | - a subroutine call [*] | |
5170 | - a logical connective | |
5171 | - a comparison operator | |
5172 | - a filetest operator, with the exception of -s -M -A -C | |
5173 | - defined(), exists() or eof() | |
5174 | - /$re/ or $foo =~ /$re/ | |
5175 | ||
5176 | [*] possibly surprising | |
5177 | */ | |
4136a0f7 | 5178 | STATIC bool |
ef519e13 | 5179 | S_looks_like_bool(pTHX_ const OP *o) |
0d863452 | 5180 | { |
97aff369 | 5181 | dVAR; |
7918f24d NC |
5182 | |
5183 | PERL_ARGS_ASSERT_LOOKS_LIKE_BOOL; | |
5184 | ||
0d863452 RH |
5185 | switch(o->op_type) { |
5186 | case OP_OR: | |
5187 | return looks_like_bool(cLOGOPo->op_first); | |
5188 | ||
5189 | case OP_AND: | |
5190 | return ( | |
5191 | looks_like_bool(cLOGOPo->op_first) | |
5192 | && looks_like_bool(cLOGOPo->op_first->op_sibling)); | |
5193 | ||
1e1d4b91 JJ |
5194 | case OP_NULL: |
5195 | return ( | |
5196 | o->op_flags & OPf_KIDS | |
5197 | && looks_like_bool(cUNOPo->op_first)); | |
5198 | ||
0d863452 RH |
5199 | case OP_ENTERSUB: |
5200 | ||
5201 | case OP_NOT: case OP_XOR: | |
5202 | /* Note that OP_DOR is not here */ | |
5203 | ||
5204 | case OP_EQ: case OP_NE: case OP_LT: | |
5205 | case OP_GT: case OP_LE: case OP_GE: | |
5206 | ||
5207 | case OP_I_EQ: case OP_I_NE: case OP_I_LT: | |
5208 | case OP_I_GT: case OP_I_LE: case OP_I_GE: | |
5209 | ||
5210 | case OP_SEQ: case OP_SNE: case OP_SLT: | |
5211 | case OP_SGT: case OP_SLE: case OP_SGE: | |
5212 | ||
5213 | case OP_SMARTMATCH: | |
5214 | ||
5215 | case OP_FTRREAD: case OP_FTRWRITE: case OP_FTREXEC: | |
5216 | case OP_FTEREAD: case OP_FTEWRITE: case OP_FTEEXEC: | |
5217 | case OP_FTIS: case OP_FTEOWNED: case OP_FTROWNED: | |
5218 | case OP_FTZERO: case OP_FTSOCK: case OP_FTCHR: | |
5219 | case OP_FTBLK: case OP_FTFILE: case OP_FTDIR: | |
5220 | case OP_FTPIPE: case OP_FTLINK: case OP_FTSUID: | |
5221 | case OP_FTSGID: case OP_FTSVTX: case OP_FTTTY: | |
5222 | case OP_FTTEXT: case OP_FTBINARY: | |
5223 | ||
5224 | case OP_DEFINED: case OP_EXISTS: | |
5225 | case OP_MATCH: case OP_EOF: | |
5226 | ||
5227 | return TRUE; | |
5228 | ||
5229 | case OP_CONST: | |
5230 | /* Detect comparisons that have been optimized away */ | |
5231 | if (cSVOPo->op_sv == &PL_sv_yes | |
5232 | || cSVOPo->op_sv == &PL_sv_no) | |
5233 | ||
5234 | return TRUE; | |
5235 | ||
5236 | /* FALL THROUGH */ | |
5237 | default: | |
5238 | return FALSE; | |
5239 | } | |
5240 | } | |
5241 | ||
5242 | OP * | |
5243 | Perl_newGIVENOP(pTHX_ OP *cond, OP *block, PADOFFSET defsv_off) | |
5244 | { | |
97aff369 | 5245 | dVAR; |
7918f24d | 5246 | PERL_ARGS_ASSERT_NEWGIVENOP; |
0d863452 RH |
5247 | return newGIVWHENOP( |
5248 | ref_array_or_hash(cond), | |
5249 | block, | |
5250 | OP_ENTERGIVEN, OP_LEAVEGIVEN, | |
5251 | defsv_off); | |
5252 | } | |
5253 | ||
5254 | /* If cond is null, this is a default {} block */ | |
5255 | OP * | |
5256 | Perl_newWHENOP(pTHX_ OP *cond, OP *block) | |
5257 | { | |
ef519e13 | 5258 | const bool cond_llb = (!cond || looks_like_bool(cond)); |
0d863452 RH |
5259 | OP *cond_op; |
5260 | ||
7918f24d NC |
5261 | PERL_ARGS_ASSERT_NEWWHENOP; |
5262 | ||
0d863452 RH |
5263 | if (cond_llb) |
5264 | cond_op = cond; | |
5265 | else { | |
5266 | cond_op = newBINOP(OP_SMARTMATCH, OPf_SPECIAL, | |
5267 | newDEFSVOP(), | |
5268 | scalar(ref_array_or_hash(cond))); | |
5269 | } | |
5270 | ||
5271 | return newGIVWHENOP( | |
5272 | cond_op, | |
5273 | append_elem(block->op_type, block, newOP(OP_BREAK, OPf_SPECIAL)), | |
5274 | OP_ENTERWHEN, OP_LEAVEWHEN, 0); | |
5275 | } | |
5276 | ||
7dafbf52 DM |
5277 | /* |
5278 | =for apidoc cv_undef | |
5279 | ||
5280 | Clear out all the active components of a CV. This can happen either | |
5281 | by an explicit C<undef &foo>, or by the reference count going to zero. | |
5282 | In the former case, we keep the CvOUTSIDE pointer, so that any anonymous | |
5283 | children can still follow the full lexical scope chain. | |
5284 | ||
5285 | =cut | |
5286 | */ | |
5287 | ||
79072805 | 5288 | void |
864dbfa3 | 5289 | Perl_cv_undef(pTHX_ CV *cv) |
79072805 | 5290 | { |
27da23d5 | 5291 | dVAR; |
503de470 | 5292 | |
7918f24d NC |
5293 | PERL_ARGS_ASSERT_CV_UNDEF; |
5294 | ||
503de470 DM |
5295 | DEBUG_X(PerlIO_printf(Perl_debug_log, |
5296 | "CV undef: cv=0x%"UVxf" comppad=0x%"UVxf"\n", | |
5297 | PTR2UV(cv), PTR2UV(PL_comppad)) | |
5298 | ); | |
5299 | ||
a636914a | 5300 | #ifdef USE_ITHREADS |
aed2304a | 5301 | if (CvFILE(cv) && !CvISXSUB(cv)) { |
35f1c1c7 | 5302 | /* for XSUBs CvFILE point directly to static memory; __FILE__ */ |
a636914a | 5303 | Safefree(CvFILE(cv)); |
a636914a | 5304 | } |
b3123a61 | 5305 | CvFILE(cv) = NULL; |
a636914a RH |
5306 | #endif |
5307 | ||
aed2304a | 5308 | if (!CvISXSUB(cv) && CvROOT(cv)) { |
bb172083 | 5309 | if (SvTYPE(cv) == SVt_PVCV && CvDEPTH(cv)) |
cea2e8a9 | 5310 | Perl_croak(aTHX_ "Can't undef active subroutine"); |
8990e307 | 5311 | ENTER; |
a0d0e21e | 5312 | |
f3548bdc | 5313 | PAD_SAVE_SETNULLPAD(); |
a0d0e21e | 5314 | |
282f25c9 | 5315 | op_free(CvROOT(cv)); |
5f66b61c AL |
5316 | CvROOT(cv) = NULL; |
5317 | CvSTART(cv) = NULL; | |
8990e307 | 5318 | LEAVE; |
79072805 | 5319 | } |
ad64d0ec | 5320 | SvPOK_off(MUTABLE_SV(cv)); /* forget prototype */ |
a0714e2c | 5321 | CvGV(cv) = NULL; |
a3985cdc DM |
5322 | |
5323 | pad_undef(cv); | |
5324 | ||
7dafbf52 DM |
5325 | /* remove CvOUTSIDE unless this is an undef rather than a free */ |
5326 | if (!SvREFCNT(cv) && CvOUTSIDE(cv)) { | |
5327 | if (!CvWEAKOUTSIDE(cv)) | |
5328 | SvREFCNT_dec(CvOUTSIDE(cv)); | |
601f1833 | 5329 | CvOUTSIDE(cv) = NULL; |
7dafbf52 | 5330 | } |
beab0874 | 5331 | if (CvCONST(cv)) { |
ad64d0ec | 5332 | SvREFCNT_dec(MUTABLE_SV(CvXSUBANY(cv).any_ptr)); |
beab0874 JT |
5333 | CvCONST_off(cv); |
5334 | } | |
d04ba589 | 5335 | if (CvISXSUB(cv) && CvXSUB(cv)) { |
96a5add6 | 5336 | CvXSUB(cv) = NULL; |
50762d59 | 5337 | } |
7dafbf52 DM |
5338 | /* delete all flags except WEAKOUTSIDE */ |
5339 | CvFLAGS(cv) &= CVf_WEAKOUTSIDE; | |
79072805 LW |
5340 | } |
5341 | ||
3fe9a6f1 | 5342 | void |
cbf82dd0 NC |
5343 | Perl_cv_ckproto_len(pTHX_ const CV *cv, const GV *gv, const char *p, |
5344 | const STRLEN len) | |
5345 | { | |
7918f24d NC |
5346 | PERL_ARGS_ASSERT_CV_CKPROTO_LEN; |
5347 | ||
cbf82dd0 NC |
5348 | /* Can't just use a strcmp on the prototype, as CONSTSUBs "cheat" by |
5349 | relying on SvCUR, and doubling up the buffer to hold CvFILE(). */ | |
5350 | if (((!p != !SvPOK(cv)) /* One has prototype, one has not. */ | |
5351 | || (p && (len != SvCUR(cv) /* Not the same length. */ | |
5352 | || memNE(p, SvPVX_const(cv), len)))) | |
5353 | && ckWARN_d(WARN_PROTOTYPE)) { | |
2d03de9c | 5354 | SV* const msg = sv_newmortal(); |
a0714e2c | 5355 | SV* name = NULL; |
3fe9a6f1 | 5356 | |
5357 | if (gv) | |
bd61b366 | 5358 | gv_efullname3(name = sv_newmortal(), gv, NULL); |
6502358f | 5359 | sv_setpvs(msg, "Prototype mismatch:"); |
46fc3d4c | 5360 | if (name) |
be2597df | 5361 | Perl_sv_catpvf(aTHX_ msg, " sub %"SVf, SVfARG(name)); |
3fe9a6f1 | 5362 | if (SvPOK(cv)) |
be2597df | 5363 | Perl_sv_catpvf(aTHX_ msg, " (%"SVf")", SVfARG(cv)); |
ebe643b9 | 5364 | else |
396482e1 GA |
5365 | sv_catpvs(msg, ": none"); |
5366 | sv_catpvs(msg, " vs "); | |
46fc3d4c | 5367 | if (p) |
cbf82dd0 | 5368 | Perl_sv_catpvf(aTHX_ msg, "(%.*s)", (int) len, p); |
46fc3d4c | 5369 | else |
396482e1 | 5370 | sv_catpvs(msg, "none"); |
be2597df | 5371 | Perl_warner(aTHX_ packWARN(WARN_PROTOTYPE), "%"SVf, SVfARG(msg)); |
3fe9a6f1 | 5372 | } |
5373 | } | |
5374 | ||
35f1c1c7 SB |
5375 | static void const_sv_xsub(pTHX_ CV* cv); |
5376 | ||
beab0874 | 5377 | /* |
ccfc67b7 JH |
5378 | |
5379 | =head1 Optree Manipulation Functions | |
5380 | ||
beab0874 JT |
5381 | =for apidoc cv_const_sv |
5382 | ||
5383 | If C<cv> is a constant sub eligible for inlining. returns the constant | |
5384 | value returned by the sub. Otherwise, returns NULL. | |
5385 | ||
5386 | Constant subs can be created with C<newCONSTSUB> or as described in | |
5387 | L<perlsub/"Constant Functions">. | |
5388 | ||
5389 | =cut | |
5390 | */ | |
760ac839 | 5391 | SV * |
d45f5b30 | 5392 | Perl_cv_const_sv(pTHX_ const CV *const cv) |
760ac839 | 5393 | { |
96a5add6 | 5394 | PERL_UNUSED_CONTEXT; |
5069cc75 NC |
5395 | if (!cv) |
5396 | return NULL; | |
5397 | if (!(SvTYPE(cv) == SVt_PVCV || SvTYPE(cv) == SVt_PVFM)) | |
5398 | return NULL; | |
ad64d0ec | 5399 | return CvCONST(cv) ? MUTABLE_SV(CvXSUBANY(cv).any_ptr) : NULL; |
fe5e78ed | 5400 | } |
760ac839 | 5401 | |
b5c19bd7 DM |
5402 | /* op_const_sv: examine an optree to determine whether it's in-lineable. |
5403 | * Can be called in 3 ways: | |
5404 | * | |
5405 | * !cv | |
5406 | * look for a single OP_CONST with attached value: return the value | |
5407 | * | |
5408 | * cv && CvCLONE(cv) && !CvCONST(cv) | |
5409 | * | |
5410 | * examine the clone prototype, and if contains only a single | |
5411 | * OP_CONST referencing a pad const, or a single PADSV referencing | |
5412 | * an outer lexical, return a non-zero value to indicate the CV is | |
5413 | * a candidate for "constizing" at clone time | |
5414 | * | |
5415 | * cv && CvCONST(cv) | |
5416 | * | |
5417 | * We have just cloned an anon prototype that was marked as a const | |
5418 | * candidiate. Try to grab the current value, and in the case of | |
5419 | * PADSV, ignore it if it has multiple references. Return the value. | |
5420 | */ | |
5421 | ||
fe5e78ed | 5422 | SV * |
6867be6d | 5423 | Perl_op_const_sv(pTHX_ const OP *o, CV *cv) |
fe5e78ed | 5424 | { |
97aff369 | 5425 | dVAR; |
a0714e2c | 5426 | SV *sv = NULL; |
fe5e78ed | 5427 | |
c631f32b GG |
5428 | if (PL_madskills) |
5429 | return NULL; | |
5430 | ||
0f79a09d | 5431 | if (!o) |
a0714e2c | 5432 | return NULL; |
1c846c1f NIS |
5433 | |
5434 | if (o->op_type == OP_LINESEQ && cLISTOPo->op_first) | |
fe5e78ed GS |
5435 | o = cLISTOPo->op_first->op_sibling; |
5436 | ||
5437 | for (; o; o = o->op_next) { | |
890ce7af | 5438 | const OPCODE type = o->op_type; |
fe5e78ed | 5439 | |
1c846c1f | 5440 | if (sv && o->op_next == o) |
fe5e78ed | 5441 | return sv; |
e576b457 JT |
5442 | if (o->op_next != o) { |
5443 | if (type == OP_NEXTSTATE || type == OP_NULL || type == OP_PUSHMARK) | |
5444 | continue; | |
5445 | if (type == OP_DBSTATE) | |
5446 | continue; | |
5447 | } | |
54310121 | 5448 | if (type == OP_LEAVESUB || type == OP_RETURN) |
5449 | break; | |
5450 | if (sv) | |
a0714e2c | 5451 | return NULL; |
7766f137 | 5452 | if (type == OP_CONST && cSVOPo->op_sv) |
5dc0d613 | 5453 | sv = cSVOPo->op_sv; |
b5c19bd7 | 5454 | else if (cv && type == OP_CONST) { |
dd2155a4 | 5455 | sv = PAD_BASE_SV(CvPADLIST(cv), o->op_targ); |
beab0874 | 5456 | if (!sv) |
a0714e2c | 5457 | return NULL; |
b5c19bd7 DM |
5458 | } |
5459 | else if (cv && type == OP_PADSV) { | |
5460 | if (CvCONST(cv)) { /* newly cloned anon */ | |
5461 | sv = PAD_BASE_SV(CvPADLIST(cv), o->op_targ); | |
5462 | /* the candidate should have 1 ref from this pad and 1 ref | |
5463 | * from the parent */ | |
5464 | if (!sv || SvREFCNT(sv) != 2) | |
a0714e2c | 5465 | return NULL; |
beab0874 | 5466 | sv = newSVsv(sv); |
b5c19bd7 DM |
5467 | SvREADONLY_on(sv); |
5468 | return sv; | |
5469 | } | |
5470 | else { | |
5471 | if (PAD_COMPNAME_FLAGS(o->op_targ) & SVf_FAKE) | |
5472 | sv = &PL_sv_undef; /* an arbitrary non-null value */ | |
beab0874 | 5473 | } |
760ac839 | 5474 | } |
b5c19bd7 | 5475 | else { |
a0714e2c | 5476 | return NULL; |
b5c19bd7 | 5477 | } |
760ac839 LW |
5478 | } |
5479 | return sv; | |
5480 | } | |
5481 | ||
eb8433b7 NC |
5482 | #ifdef PERL_MAD |
5483 | OP * | |
5484 | #else | |
09bef843 | 5485 | void |
eb8433b7 | 5486 | #endif |
09bef843 SB |
5487 | Perl_newMYSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, OP *block) |
5488 | { | |
99129197 NC |
5489 | #if 0 |
5490 | /* This would be the return value, but the return cannot be reached. */ | |
eb8433b7 NC |
5491 | OP* pegop = newOP(OP_NULL, 0); |
5492 | #endif | |
5493 | ||
46c461b5 AL |
5494 | PERL_UNUSED_ARG(floor); |
5495 | ||
09bef843 SB |
5496 | if (o) |
5497 | SAVEFREEOP(o); | |
5498 | if (proto) | |
5499 | SAVEFREEOP(proto); | |
5500 | if (attrs) | |
5501 | SAVEFREEOP(attrs); | |
5502 | if (block) | |
5503 | SAVEFREEOP(block); | |
5504 | Perl_croak(aTHX_ "\"my sub\" not yet implemented"); | |
eb8433b7 | 5505 | #ifdef PERL_MAD |
99129197 | 5506 | NORETURN_FUNCTION_END; |
eb8433b7 | 5507 | #endif |
09bef843 SB |
5508 | } |
5509 | ||
748a9306 | 5510 | CV * |
864dbfa3 | 5511 | Perl_newSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *block) |
79072805 | 5512 | { |
5f66b61c | 5513 | return Perl_newATTRSUB(aTHX_ floor, o, proto, NULL, block); |
09bef843 SB |
5514 | } |
5515 | ||
5516 | CV * | |
5517 | Perl_newATTRSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, OP *block) | |
5518 | { | |
27da23d5 | 5519 | dVAR; |
6867be6d | 5520 | const char *aname; |
83ee9e09 | 5521 | GV *gv; |
5c144d81 | 5522 | const char *ps; |
ea6e9374 | 5523 | STRLEN ps_len; |
c445ea15 | 5524 | register CV *cv = NULL; |
beab0874 | 5525 | SV *const_sv; |
b48b272a NC |
5526 | /* If the subroutine has no body, no attributes, and no builtin attributes |
5527 | then it's just a sub declaration, and we may be able to get away with | |
5528 | storing with a placeholder scalar in the symbol table, rather than a | |
5529 | full GV and CV. If anything is present then it will take a full CV to | |
5530 | store it. */ | |
5531 | const I32 gv_fetch_flags | |
eb8433b7 NC |
5532 | = (block || attrs || (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS) |
5533 | || PL_madskills) | |
b48b272a | 5534 | ? GV_ADDMULTI : GV_ADDMULTI | GV_NOINIT; |
4ea561bc | 5535 | const char * const name = o ? SvPV_nolen_const(cSVOPo->op_sv) : NULL; |
8e742a20 MHM |
5536 | |
5537 | if (proto) { | |
5538 | assert(proto->op_type == OP_CONST); | |
4ea561bc | 5539 | ps = SvPV_const(((SVOP*)proto)->op_sv, ps_len); |
8e742a20 MHM |
5540 | } |
5541 | else | |
bd61b366 | 5542 | ps = NULL; |
8e742a20 | 5543 | |
83ee9e09 | 5544 | if (!name && PERLDB_NAMEANON && CopLINE(PL_curcop)) { |
aec46f14 | 5545 | SV * const sv = sv_newmortal(); |
c99da370 JH |
5546 | Perl_sv_setpvf(aTHX_ sv, "%s[%s:%"IVdf"]", |
5547 | PL_curstash ? "__ANON__" : "__ANON__::__ANON__", | |
83ee9e09 | 5548 | CopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); |
b15aece3 | 5549 | aname = SvPVX_const(sv); |
83ee9e09 GS |
5550 | } |
5551 | else | |
bd61b366 | 5552 | aname = NULL; |
61dbb99a | 5553 | |
61dbb99a | 5554 | gv = name ? gv_fetchsv(cSVOPo->op_sv, gv_fetch_flags, SVt_PVCV) |
666ea192 JH |
5555 | : gv_fetchpv(aname ? aname |
5556 | : (PL_curstash ? "__ANON__" : "__ANON__::__ANON__"), | |
61dbb99a | 5557 | gv_fetch_flags, SVt_PVCV); |
83ee9e09 | 5558 | |
eb8433b7 NC |
5559 | if (!PL_madskills) { |
5560 | if (o) | |
5561 | SAVEFREEOP(o); | |
5562 | if (proto) | |
5563 | SAVEFREEOP(proto); | |
5564 | if (attrs) | |
5565 | SAVEFREEOP(attrs); | |
5566 | } | |
3fe9a6f1 | 5567 | |
09bef843 | 5568 | if (SvTYPE(gv) != SVt_PVGV) { /* Maybe prototype now, and had at |
55d729e4 GS |
5569 | maximum a prototype before. */ |
5570 | if (SvTYPE(gv) > SVt_NULL) { | |
ad64d0ec NC |
5571 | if (!SvPOK((const SV *)gv) |
5572 | && !(SvIOK((const SV *)gv) && SvIVX((const SV *)gv) == -1) | |
e476b1b5 | 5573 | && ckWARN_d(WARN_PROTOTYPE)) |
f248d071 | 5574 | { |
9014280d | 5575 | Perl_warner(aTHX_ packWARN(WARN_PROTOTYPE), "Runaway prototype"); |
f248d071 | 5576 | } |
ea726b52 | 5577 | cv_ckproto_len((const CV *)gv, NULL, ps, ps_len); |
55d729e4 GS |
5578 | } |
5579 | if (ps) | |
ad64d0ec | 5580 | sv_setpvn(MUTABLE_SV(gv), ps, ps_len); |
55d729e4 | 5581 | else |
ad64d0ec | 5582 | sv_setiv(MUTABLE_SV(gv), -1); |
e1a479c5 | 5583 | |
3280af22 NIS |
5584 | SvREFCNT_dec(PL_compcv); |
5585 | cv = PL_compcv = NULL; | |
beab0874 | 5586 | goto done; |
55d729e4 GS |
5587 | } |
5588 | ||
601f1833 | 5589 | cv = (!name || GvCVGEN(gv)) ? NULL : GvCV(gv); |
beab0874 | 5590 | |
7fb37951 AMS |
5591 | #ifdef GV_UNIQUE_CHECK |
5592 | if (cv && GvUNIQUE(gv) && SvREADONLY(cv)) { | |
5593 | Perl_croak(aTHX_ "Can't define subroutine %s (GV is unique)", name); | |
5bd07a3d DM |
5594 | } |
5595 | #endif | |
5596 | ||
eb8433b7 NC |
5597 | if (!block || !ps || *ps || attrs |
5598 | || (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS) | |
5599 | #ifdef PERL_MAD | |
5600 | || block->op_type == OP_NULL | |
5601 | #endif | |
5602 | ) | |
a0714e2c | 5603 | const_sv = NULL; |
beab0874 | 5604 | else |
601f1833 | 5605 | const_sv = op_const_sv(block, NULL); |
beab0874 JT |
5606 | |
5607 | if (cv) { | |
6867be6d | 5608 | const bool exists = CvROOT(cv) || CvXSUB(cv); |
5bd07a3d | 5609 | |
7fb37951 AMS |
5610 | #ifdef GV_UNIQUE_CHECK |
5611 | if (exists && GvUNIQUE(gv)) { | |
5612 | Perl_croak(aTHX_ "Can't redefine unique subroutine %s", name); | |
5bd07a3d DM |
5613 | } |
5614 | #endif | |
5615 | ||
60ed1d8c GS |
5616 | /* if the subroutine doesn't exist and wasn't pre-declared |
5617 | * with a prototype, assume it will be AUTOLOADed, | |
5618 | * skipping the prototype check | |
5619 | */ | |
5620 | if (exists || SvPOK(cv)) | |
cbf82dd0 | 5621 | cv_ckproto_len(cv, gv, ps, ps_len); |
68dc0745 | 5622 | /* already defined (or promised)? */ |
60ed1d8c | 5623 | if (exists || GvASSUMECV(gv)) { |
eb8433b7 NC |
5624 | if ((!block |
5625 | #ifdef PERL_MAD | |
5626 | || block->op_type == OP_NULL | |
5627 | #endif | |
5628 | )&& !attrs) { | |
d3cea301 SB |
5629 | if (CvFLAGS(PL_compcv)) { |
5630 | /* might have had built-in attrs applied */ | |
5631 | CvFLAGS(cv) |= (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS); | |
5632 | } | |
aa689395 | 5633 | /* just a "sub foo;" when &foo is already defined */ |
3280af22 | 5634 | SAVEFREESV(PL_compcv); |
aa689395 | 5635 | goto done; |
5636 | } | |
eb8433b7 NC |
5637 | if (block |
5638 | #ifdef PERL_MAD | |
5639 | && block->op_type != OP_NULL | |
5640 | #endif | |
5641 | ) { | |
beab0874 JT |
5642 | if (ckWARN(WARN_REDEFINE) |
5643 | || (CvCONST(cv) | |
5644 | && (!const_sv || sv_cmp(cv_const_sv(cv), const_sv)))) | |
5645 | { | |
6867be6d | 5646 | const line_t oldline = CopLINE(PL_curcop); |
53a7735b DM |
5647 | if (PL_parser && PL_parser->copline != NOLINE) |
5648 | CopLINE_set(PL_curcop, PL_parser->copline); | |
9014280d | 5649 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), |
666ea192 JH |
5650 | CvCONST(cv) ? "Constant subroutine %s redefined" |
5651 | : "Subroutine %s redefined", name); | |
beab0874 JT |
5652 | CopLINE_set(PL_curcop, oldline); |
5653 | } | |
eb8433b7 NC |
5654 | #ifdef PERL_MAD |
5655 | if (!PL_minus_c) /* keep old one around for madskills */ | |
5656 | #endif | |
5657 | { | |
5658 | /* (PL_madskills unset in used file.) */ | |
5659 | SvREFCNT_dec(cv); | |
5660 | } | |
601f1833 | 5661 | cv = NULL; |
79072805 | 5662 | } |
79072805 LW |
5663 | } |
5664 | } | |
beab0874 | 5665 | if (const_sv) { |
f84c484e | 5666 | SvREFCNT_inc_simple_void_NN(const_sv); |
beab0874 | 5667 | if (cv) { |
0768512c | 5668 | assert(!CvROOT(cv) && !CvCONST(cv)); |
ad64d0ec | 5669 | sv_setpvs(MUTABLE_SV(cv), ""); /* prototype is "" */ |
beab0874 JT |
5670 | CvXSUBANY(cv).any_ptr = const_sv; |
5671 | CvXSUB(cv) = const_sv_xsub; | |
5672 | CvCONST_on(cv); | |
d04ba589 | 5673 | CvISXSUB_on(cv); |
beab0874 JT |
5674 | } |
5675 | else { | |
601f1833 | 5676 | GvCV(gv) = NULL; |
beab0874 JT |
5677 | cv = newCONSTSUB(NULL, name, const_sv); |
5678 | } | |
e1a479c5 BB |
5679 | mro_method_changed_in( /* sub Foo::Bar () { 123 } */ |
5680 | (CvGV(cv) && GvSTASH(CvGV(cv))) | |
5681 | ? GvSTASH(CvGV(cv)) | |
5682 | : CvSTASH(cv) | |
5683 | ? CvSTASH(cv) | |
5684 | : PL_curstash | |
5685 | ); | |
eb8433b7 NC |
5686 | if (PL_madskills) |
5687 | goto install_block; | |
beab0874 JT |
5688 | op_free(block); |
5689 | SvREFCNT_dec(PL_compcv); | |
5690 | PL_compcv = NULL; | |
beab0874 JT |
5691 | goto done; |
5692 | } | |
09bef843 SB |
5693 | if (attrs) { |
5694 | HV *stash; | |
5695 | SV *rcv; | |
5696 | ||
5697 | /* Need to do a C<use attributes $stash_of_cv,\&cv,@attrs> | |
5698 | * before we clobber PL_compcv. | |
5699 | */ | |
99129197 | 5700 | if (cv && (!block |
eb8433b7 NC |
5701 | #ifdef PERL_MAD |
5702 | || block->op_type == OP_NULL | |
5703 | #endif | |
5704 | )) { | |
ad64d0ec | 5705 | rcv = MUTABLE_SV(cv); |
020f0e03 SB |
5706 | /* Might have had built-in attributes applied -- propagate them. */ |
5707 | CvFLAGS(cv) |= (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS); | |
a9164de8 | 5708 | if (CvGV(cv) && GvSTASH(CvGV(cv))) |
09bef843 | 5709 | stash = GvSTASH(CvGV(cv)); |
a9164de8 | 5710 | else if (CvSTASH(cv)) |
09bef843 SB |
5711 | stash = CvSTASH(cv); |
5712 | else | |
5713 | stash = PL_curstash; | |
5714 | } | |
5715 | else { | |
5716 | /* possibly about to re-define existing subr -- ignore old cv */ | |
ad64d0ec | 5717 | rcv = MUTABLE_SV(PL_compcv); |
a9164de8 | 5718 | if (name && GvSTASH(gv)) |
09bef843 SB |
5719 | stash = GvSTASH(gv); |
5720 | else | |
5721 | stash = PL_curstash; | |
5722 | } | |
95f0a2f1 | 5723 | apply_attrs(stash, rcv, attrs, FALSE); |
09bef843 | 5724 | } |
a0d0e21e | 5725 | if (cv) { /* must reuse cv if autoloaded */ |
eb8433b7 NC |
5726 | if ( |
5727 | #ifdef PERL_MAD | |
5728 | ( | |
5729 | #endif | |
5730 | !block | |
5731 | #ifdef PERL_MAD | |
5732 | || block->op_type == OP_NULL) && !PL_madskills | |
5733 | #endif | |
5734 | ) { | |
09bef843 SB |
5735 | /* got here with just attrs -- work done, so bug out */ |
5736 | SAVEFREESV(PL_compcv); | |
5737 | goto done; | |
5738 | } | |
a3985cdc | 5739 | /* transfer PL_compcv to cv */ |
4633a7c4 | 5740 | cv_undef(cv); |
3280af22 | 5741 | CvFLAGS(cv) = CvFLAGS(PL_compcv); |
5c41a5fa DM |
5742 | if (!CvWEAKOUTSIDE(cv)) |
5743 | SvREFCNT_dec(CvOUTSIDE(cv)); | |
3280af22 | 5744 | CvOUTSIDE(cv) = CvOUTSIDE(PL_compcv); |
a3985cdc | 5745 | CvOUTSIDE_SEQ(cv) = CvOUTSIDE_SEQ(PL_compcv); |
3280af22 NIS |
5746 | CvOUTSIDE(PL_compcv) = 0; |
5747 | CvPADLIST(cv) = CvPADLIST(PL_compcv); | |
5748 | CvPADLIST(PL_compcv) = 0; | |
282f25c9 | 5749 | /* inner references to PL_compcv must be fixed up ... */ |
dd2155a4 | 5750 | pad_fixup_inner_anons(CvPADLIST(cv), PL_compcv, cv); |
282f25c9 | 5751 | /* ... before we throw it away */ |
3280af22 | 5752 | SvREFCNT_dec(PL_compcv); |
b5c19bd7 | 5753 | PL_compcv = cv; |
a933f601 IZ |
5754 | if (PERLDB_INTER)/* Advice debugger on the new sub. */ |
5755 | ++PL_sub_generation; | |
a0d0e21e LW |
5756 | } |
5757 | else { | |
3280af22 | 5758 | cv = PL_compcv; |
44a8e56a | 5759 | if (name) { |
5760 | GvCV(gv) = cv; | |
eb8433b7 NC |
5761 | if (PL_madskills) { |
5762 | if (strEQ(name, "import")) { | |
ad64d0ec | 5763 | PL_formfeed = MUTABLE_SV(cv); |
eb8433b7 NC |
5764 | Perl_warner(aTHX_ packWARN(WARN_VOID), "%lx\n", (long)cv); |
5765 | } | |
5766 | } | |
44a8e56a | 5767 | GvCVGEN(gv) = 0; |
e1a479c5 | 5768 | mro_method_changed_in(GvSTASH(gv)); /* sub Foo::bar { (shift)+1 } */ |
44a8e56a | 5769 | } |
a0d0e21e | 5770 | } |
65c50114 | 5771 | CvGV(cv) = gv; |
a636914a | 5772 | CvFILE_set_from_cop(cv, PL_curcop); |
3280af22 | 5773 | CvSTASH(cv) = PL_curstash; |
8990e307 | 5774 | |
3fe9a6f1 | 5775 | if (ps) |
ad64d0ec | 5776 | sv_setpvn(MUTABLE_SV(cv), ps, ps_len); |
4633a7c4 | 5777 | |
13765c85 | 5778 | if (PL_parser && PL_parser->error_count) { |
c07a80fd | 5779 | op_free(block); |
5f66b61c | 5780 | block = NULL; |
68dc0745 | 5781 | if (name) { |
6867be6d | 5782 | const char *s = strrchr(name, ':'); |
68dc0745 | 5783 | s = s ? s+1 : name; |
6d4c2119 | 5784 | if (strEQ(s, "BEGIN")) { |
e1ec3a88 | 5785 | const char not_safe[] = |
6d4c2119 | 5786 | "BEGIN not safe after errors--compilation aborted"; |
faef0170 | 5787 | if (PL_in_eval & EVAL_KEEPERR) |
cea2e8a9 | 5788 | Perl_croak(aTHX_ not_safe); |
6d4c2119 CS |
5789 | else { |
5790 | /* force display of errors found but not reported */ | |
38a03e6e | 5791 | sv_catpv(ERRSV, not_safe); |
be2597df | 5792 | Perl_croak(aTHX_ "%"SVf, SVfARG(ERRSV)); |
6d4c2119 CS |
5793 | } |
5794 | } | |
68dc0745 | 5795 | } |
c07a80fd | 5796 | } |
eb8433b7 | 5797 | install_block: |
beab0874 JT |
5798 | if (!block) |
5799 | goto done; | |
a0d0e21e | 5800 | |
aac018bb NC |
5801 | /* If we assign an optree to a PVCV, then we've defined a subroutine that |
5802 | the debugger could be able to set a breakpoint in, so signal to | |
5803 | pp_entereval that it should not throw away any saved lines at scope | |
5804 | exit. */ | |
5805 | ||
fd06b02c | 5806 | PL_breakable_sub_gen++; |
7766f137 | 5807 | if (CvLVALUE(cv)) { |
78f9721b SM |
5808 | CvROOT(cv) = newUNOP(OP_LEAVESUBLV, 0, |
5809 | mod(scalarseq(block), OP_LEAVESUBLV)); | |
7e5d8ed2 | 5810 | block->op_attached = 1; |
7766f137 GS |
5811 | } |
5812 | else { | |
09c2fd24 AE |
5813 | /* This makes sub {}; work as expected. */ |
5814 | if (block->op_type == OP_STUB) { | |
1496a290 | 5815 | OP* const newblock = newSTATEOP(0, NULL, 0); |
eb8433b7 NC |
5816 | #ifdef PERL_MAD |
5817 | op_getmad(block,newblock,'B'); | |
5818 | #else | |
09c2fd24 | 5819 | op_free(block); |
eb8433b7 NC |
5820 | #endif |
5821 | block = newblock; | |
09c2fd24 | 5822 | } |
7e5d8ed2 DM |
5823 | else |
5824 | block->op_attached = 1; | |
7766f137 GS |
5825 | CvROOT(cv) = newUNOP(OP_LEAVESUB, 0, scalarseq(block)); |
5826 | } | |
5827 | CvROOT(cv)->op_private |= OPpREFCOUNTED; | |
5828 | OpREFCNT_set(CvROOT(cv), 1); | |
5829 | CvSTART(cv) = LINKLIST(CvROOT(cv)); | |
5830 | CvROOT(cv)->op_next = 0; | |
a2efc822 | 5831 | CALL_PEEP(CvSTART(cv)); |
7766f137 GS |
5832 | |
5833 | /* now that optimizer has done its work, adjust pad values */ | |
54310121 | 5834 | |
dd2155a4 DM |
5835 | pad_tidy(CvCLONE(cv) ? padtidy_SUBCLONE : padtidy_SUB); |
5836 | ||
5837 | if (CvCLONE(cv)) { | |
beab0874 JT |
5838 | assert(!CvCONST(cv)); |
5839 | if (ps && !*ps && op_const_sv(block, cv)) | |
5840 | CvCONST_on(cv); | |
a0d0e21e | 5841 | } |
79072805 | 5842 | |
83ee9e09 | 5843 | if (name || aname) { |
3280af22 | 5844 | if (PERLDB_SUBLINE && PL_curstash != PL_debstash) { |
561b68a9 | 5845 | SV * const sv = newSV(0); |
c4420975 | 5846 | SV * const tmpstr = sv_newmortal(); |
5c1737d1 NC |
5847 | GV * const db_postponed = gv_fetchpvs("DB::postponed", |
5848 | GV_ADDMULTI, SVt_PVHV); | |
44a8e56a | 5849 | HV *hv; |
5850 | ||
ed094faf GS |
5851 | Perl_sv_setpvf(aTHX_ sv, "%s:%ld-%ld", |
5852 | CopFILE(PL_curcop), | |
cc49e20b | 5853 | (long)PL_subline, (long)CopLINE(PL_curcop)); |
bd61b366 | 5854 | gv_efullname3(tmpstr, gv, NULL); |
04fe65b0 RGS |
5855 | (void)hv_store(GvHV(PL_DBsub), SvPVX_const(tmpstr), |
5856 | SvCUR(tmpstr), sv, 0); | |
44a8e56a | 5857 | hv = GvHVn(db_postponed); |
551405c4 AL |
5858 | if (HvFILL(hv) > 0 && hv_exists(hv, SvPVX_const(tmpstr), SvCUR(tmpstr))) { |
5859 | CV * const pcv = GvCV(db_postponed); | |
5860 | if (pcv) { | |
5861 | dSP; | |
5862 | PUSHMARK(SP); | |
5863 | XPUSHs(tmpstr); | |
5864 | PUTBACK; | |
ad64d0ec | 5865 | call_sv(MUTABLE_SV(pcv), G_DISCARD); |
551405c4 | 5866 | } |
44a8e56a | 5867 | } |
5868 | } | |
79072805 | 5869 | |
13765c85 | 5870 | if (name && ! (PL_parser && PL_parser->error_count)) |
0cd10f52 | 5871 | process_special_blocks(name, gv, cv); |
33fb7a6e | 5872 | } |
ed094faf | 5873 | |
33fb7a6e | 5874 | done: |
53a7735b DM |
5875 | if (PL_parser) |
5876 | PL_parser->copline = NOLINE; | |
33fb7a6e NC |
5877 | LEAVE_SCOPE(floor); |
5878 | return cv; | |
5879 | } | |
ed094faf | 5880 | |
33fb7a6e NC |
5881 | STATIC void |
5882 | S_process_special_blocks(pTHX_ const char *const fullname, GV *const gv, | |
5883 | CV *const cv) | |
5884 | { | |
5885 | const char *const colon = strrchr(fullname,':'); | |
5886 | const char *const name = colon ? colon + 1 : fullname; | |
5887 | ||
7918f24d NC |
5888 | PERL_ARGS_ASSERT_PROCESS_SPECIAL_BLOCKS; |
5889 | ||
33fb7a6e | 5890 | if (*name == 'B') { |
6952d67e | 5891 | if (strEQ(name, "BEGIN")) { |
6867be6d | 5892 | const I32 oldscope = PL_scopestack_ix; |
28757baa | 5893 | ENTER; |
57843af0 GS |
5894 | SAVECOPFILE(&PL_compiling); |
5895 | SAVECOPLINE(&PL_compiling); | |
28757baa | 5896 | |
28757baa | 5897 | DEBUG_x( dump_sub(gv) ); |
ad64d0ec | 5898 | Perl_av_create_and_push(aTHX_ &PL_beginav, MUTABLE_SV(cv)); |
ea2f84a3 | 5899 | GvCV(gv) = 0; /* cv has been hijacked */ |
3280af22 | 5900 | call_list(oldscope, PL_beginav); |
a6006777 | 5901 | |
3280af22 | 5902 | PL_curcop = &PL_compiling; |
623e6609 | 5903 | CopHINTS_set(&PL_compiling, PL_hints); |
28757baa | 5904 | LEAVE; |
5905 | } | |
33fb7a6e NC |
5906 | else |
5907 | return; | |
5908 | } else { | |
5909 | if (*name == 'E') { | |
5910 | if strEQ(name, "END") { | |
5911 | DEBUG_x( dump_sub(gv) ); | |
ad64d0ec | 5912 | Perl_av_create_and_unshift_one(aTHX_ &PL_endav, MUTABLE_SV(cv)); |
33fb7a6e NC |
5913 | } else |
5914 | return; | |
5915 | } else if (*name == 'U') { | |
5916 | if (strEQ(name, "UNITCHECK")) { | |
5917 | /* It's never too late to run a unitcheck block */ | |
ad64d0ec | 5918 | Perl_av_create_and_unshift_one(aTHX_ &PL_unitcheckav, MUTABLE_SV(cv)); |
33fb7a6e NC |
5919 | } |
5920 | else | |
5921 | return; | |
5922 | } else if (*name == 'C') { | |
5923 | if (strEQ(name, "CHECK")) { | |
5924 | if (PL_main_start && ckWARN(WARN_VOID)) | |
5925 | Perl_warner(aTHX_ packWARN(WARN_VOID), | |
5926 | "Too late to run CHECK block"); | |
ad64d0ec | 5927 | Perl_av_create_and_unshift_one(aTHX_ &PL_checkav, MUTABLE_SV(cv)); |
33fb7a6e NC |
5928 | } |
5929 | else | |
5930 | return; | |
5931 | } else if (*name == 'I') { | |
5932 | if (strEQ(name, "INIT")) { | |
5933 | if (PL_main_start && ckWARN(WARN_VOID)) | |
5934 | Perl_warner(aTHX_ packWARN(WARN_VOID), | |
5935 | "Too late to run INIT block"); | |
ad64d0ec | 5936 | Perl_av_create_and_push(aTHX_ &PL_initav, MUTABLE_SV(cv)); |
33fb7a6e NC |
5937 | } |
5938 | else | |
5939 | return; | |
5940 | } else | |
5941 | return; | |
5942 | DEBUG_x( dump_sub(gv) ); | |
5943 | GvCV(gv) = 0; /* cv has been hijacked */ | |
79072805 | 5944 | } |
79072805 LW |
5945 | } |
5946 | ||
954c1994 GS |
5947 | /* |
5948 | =for apidoc newCONSTSUB | |
5949 | ||
5950 | Creates a constant sub equivalent to Perl C<sub FOO () { 123 }> which is | |
5951 | eligible for inlining at compile-time. | |
5952 | ||
5953 | =cut | |
5954 | */ | |
5955 | ||
beab0874 | 5956 | CV * |
e1ec3a88 | 5957 | Perl_newCONSTSUB(pTHX_ HV *stash, const char *name, SV *sv) |
5476c433 | 5958 | { |
27da23d5 | 5959 | dVAR; |
beab0874 | 5960 | CV* cv; |
cbf82dd0 NC |
5961 | #ifdef USE_ITHREADS |
5962 | const char *const temp_p = CopFILE(PL_curcop); | |
07fcac01 | 5963 | const STRLEN len = temp_p ? strlen(temp_p) : 0; |
cbf82dd0 NC |
5964 | #else |
5965 | SV *const temp_sv = CopFILESV(PL_curcop); | |
5966 | STRLEN len; | |
5967 | const char *const temp_p = temp_sv ? SvPV_const(temp_sv, len) : NULL; | |
5968 | #endif | |
07fcac01 | 5969 | char *const file = savepvn(temp_p, temp_p ? len : 0); |
5476c433 | 5970 | |
11faa288 | 5971 | ENTER; |
11faa288 | 5972 | |
401667e9 DM |
5973 | if (IN_PERL_RUNTIME) { |
5974 | /* at runtime, it's not safe to manipulate PL_curcop: it may be | |
5975 | * an op shared between threads. Use a non-shared COP for our | |
5976 | * dirty work */ | |
5977 | SAVEVPTR(PL_curcop); | |
5978 | PL_curcop = &PL_compiling; | |
5979 | } | |
f4dd75d9 | 5980 | SAVECOPLINE(PL_curcop); |
53a7735b | 5981 | CopLINE_set(PL_curcop, PL_parser ? PL_parser->copline : NOLINE); |
f4dd75d9 GS |
5982 | |
5983 | SAVEHINTS(); | |
3280af22 | 5984 | PL_hints &= ~HINT_BLOCK_SCOPE; |
11faa288 GS |
5985 | |
5986 | if (stash) { | |
5987 | SAVESPTR(PL_curstash); | |
5988 | SAVECOPSTASH(PL_curcop); | |
5989 | PL_curstash = stash; | |
05ec9bb3 | 5990 | CopSTASH_set(PL_curcop,stash); |
11faa288 | 5991 | } |
5476c433 | 5992 | |
cbf82dd0 NC |
5993 | /* file becomes the CvFILE. For an XS, it's supposed to be static storage, |
5994 | and so doesn't get free()d. (It's expected to be from the C pre- | |
5995 | processor __FILE__ directive). But we need a dynamically allocated one, | |
77004dee NC |
5996 | and we need it to get freed. */ |
5997 | cv = newXS_flags(name, const_sv_xsub, file, "", XS_DYNAMIC_FILENAME); | |
beab0874 JT |
5998 | CvXSUBANY(cv).any_ptr = sv; |
5999 | CvCONST_on(cv); | |
c3db7d92 | 6000 | Safefree(file); |
5476c433 | 6001 | |
65e66c80 | 6002 | #ifdef USE_ITHREADS |
02f28d44 MHM |
6003 | if (stash) |
6004 | CopSTASH_free(PL_curcop); | |
65e66c80 | 6005 | #endif |
11faa288 | 6006 | LEAVE; |
beab0874 JT |
6007 | |
6008 | return cv; | |
5476c433 JD |
6009 | } |
6010 | ||
77004dee NC |
6011 | CV * |
6012 | Perl_newXS_flags(pTHX_ const char *name, XSUBADDR_t subaddr, | |
6013 | const char *const filename, const char *const proto, | |
6014 | U32 flags) | |
6015 | { | |
6016 | CV *cv = newXS(name, subaddr, filename); | |
6017 | ||
7918f24d NC |
6018 | PERL_ARGS_ASSERT_NEWXS_FLAGS; |
6019 | ||
77004dee NC |
6020 | if (flags & XS_DYNAMIC_FILENAME) { |
6021 | /* We need to "make arrangements" (ie cheat) to ensure that the | |
6022 | filename lasts as long as the PVCV we just created, but also doesn't | |
6023 | leak */ | |
6024 | STRLEN filename_len = strlen(filename); | |
6025 | STRLEN proto_and_file_len = filename_len; | |
6026 | char *proto_and_file; | |
6027 | STRLEN proto_len; | |
6028 | ||
6029 | if (proto) { | |
6030 | proto_len = strlen(proto); | |
6031 | proto_and_file_len += proto_len; | |
6032 | ||
6033 | Newx(proto_and_file, proto_and_file_len + 1, char); | |
6034 | Copy(proto, proto_and_file, proto_len, char); | |
6035 | Copy(filename, proto_and_file + proto_len, filename_len + 1, char); | |
6036 | } else { | |
6037 | proto_len = 0; | |
6038 | proto_and_file = savepvn(filename, filename_len); | |
6039 | } | |
6040 | ||
6041 | /* This gets free()d. :-) */ | |
ad64d0ec | 6042 | sv_usepvn_flags(MUTABLE_SV(cv), proto_and_file, proto_and_file_len, |
77004dee NC |
6043 | SV_HAS_TRAILING_NUL); |
6044 | if (proto) { | |
6045 | /* This gives us the correct prototype, rather than one with the | |
6046 | file name appended. */ | |
6047 | SvCUR_set(cv, proto_len); | |
6048 | } else { | |
6049 | SvPOK_off(cv); | |
6050 | } | |
81a2b3b6 | 6051 | CvFILE(cv) = proto_and_file + proto_len; |
77004dee | 6052 | } else { |
ad64d0ec | 6053 | sv_setpv(MUTABLE_SV(cv), proto); |
77004dee NC |
6054 | } |
6055 | return cv; | |
6056 | } | |
6057 | ||
954c1994 GS |
6058 | /* |
6059 | =for apidoc U||newXS | |
6060 | ||
77004dee NC |
6061 | Used by C<xsubpp> to hook up XSUBs as Perl subs. I<filename> needs to be |
6062 | static storage, as it is used directly as CvFILE(), without a copy being made. | |
954c1994 GS |
6063 | |
6064 | =cut | |
6065 | */ | |
6066 | ||
57d3b86d | 6067 | CV * |
bfed75c6 | 6068 | Perl_newXS(pTHX_ const char *name, XSUBADDR_t subaddr, const char *filename) |
a0d0e21e | 6069 | { |
97aff369 | 6070 | dVAR; |
666ea192 JH |
6071 | GV * const gv = gv_fetchpv(name ? name : |
6072 | (PL_curstash ? "__ANON__" : "__ANON__::__ANON__"), | |
6073 | GV_ADDMULTI, SVt_PVCV); | |
79072805 | 6074 | register CV *cv; |
44a8e56a | 6075 | |
7918f24d NC |
6076 | PERL_ARGS_ASSERT_NEWXS; |
6077 | ||
1ecdd9a8 HS |
6078 | if (!subaddr) |
6079 | Perl_croak(aTHX_ "panic: no address for '%s' in '%s'", name, filename); | |
6080 | ||
601f1833 | 6081 | if ((cv = (name ? GvCV(gv) : NULL))) { |
44a8e56a | 6082 | if (GvCVGEN(gv)) { |
6083 | /* just a cached method */ | |
6084 | SvREFCNT_dec(cv); | |
601f1833 | 6085 | cv = NULL; |
44a8e56a | 6086 | } |
6087 | else if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
6088 | /* already defined (or promised) */ | |
1df70142 | 6089 | /* XXX It's possible for this HvNAME_get to return null, and get passed into strEQ */ |
66a1b24b AL |
6090 | if (ckWARN(WARN_REDEFINE)) { |
6091 | GV * const gvcv = CvGV(cv); | |
6092 | if (gvcv) { | |
6093 | HV * const stash = GvSTASH(gvcv); | |
6094 | if (stash) { | |
8b38226b AL |
6095 | const char *redefined_name = HvNAME_get(stash); |
6096 | if ( strEQ(redefined_name,"autouse") ) { | |
66a1b24b | 6097 | const line_t oldline = CopLINE(PL_curcop); |
53a7735b DM |
6098 | if (PL_parser && PL_parser->copline != NOLINE) |
6099 | CopLINE_set(PL_curcop, PL_parser->copline); | |
66a1b24b | 6100 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), |
666ea192 JH |
6101 | CvCONST(cv) ? "Constant subroutine %s redefined" |
6102 | : "Subroutine %s redefined" | |
6103 | ,name); | |
66a1b24b AL |
6104 | CopLINE_set(PL_curcop, oldline); |
6105 | } | |
6106 | } | |
6107 | } | |
a0d0e21e LW |
6108 | } |
6109 | SvREFCNT_dec(cv); | |
601f1833 | 6110 | cv = NULL; |
79072805 | 6111 | } |
79072805 | 6112 | } |
44a8e56a | 6113 | |
6114 | if (cv) /* must reuse cv if autoloaded */ | |
6115 | cv_undef(cv); | |
a0d0e21e | 6116 | else { |
ea726b52 | 6117 | cv = MUTABLE_CV(newSV_type(SVt_PVCV)); |
44a8e56a | 6118 | if (name) { |
6119 | GvCV(gv) = cv; | |
6120 | GvCVGEN(gv) = 0; | |
e1a479c5 | 6121 | mro_method_changed_in(GvSTASH(gv)); /* newXS */ |
44a8e56a | 6122 | } |
a0d0e21e | 6123 | } |
65c50114 | 6124 | CvGV(cv) = gv; |
b195d487 | 6125 | (void)gv_fetchfile(filename); |
dd374669 | 6126 | CvFILE(cv) = (char *)filename; /* NOTE: not copied, as it is expected to be |
57843af0 | 6127 | an external constant string */ |
d04ba589 | 6128 | CvISXSUB_on(cv); |
a0d0e21e | 6129 | CvXSUB(cv) = subaddr; |
44a8e56a | 6130 | |
33fb7a6e NC |
6131 | if (name) |
6132 | process_special_blocks(name, gv, cv); | |
8990e307 | 6133 | else |
a5f75d66 | 6134 | CvANON_on(cv); |
44a8e56a | 6135 | |
a0d0e21e | 6136 | return cv; |
79072805 LW |
6137 | } |
6138 | ||
eb8433b7 NC |
6139 | #ifdef PERL_MAD |
6140 | OP * | |
6141 | #else | |
79072805 | 6142 | void |
eb8433b7 | 6143 | #endif |
864dbfa3 | 6144 | Perl_newFORM(pTHX_ I32 floor, OP *o, OP *block) |
79072805 | 6145 | { |
97aff369 | 6146 | dVAR; |
79072805 | 6147 | register CV *cv; |
eb8433b7 NC |
6148 | #ifdef PERL_MAD |
6149 | OP* pegop = newOP(OP_NULL, 0); | |
6150 | #endif | |
79072805 | 6151 | |
0bd48802 | 6152 | GV * const gv = o |
f776e3cd | 6153 | ? gv_fetchsv(cSVOPo->op_sv, GV_ADD, SVt_PVFM) |
fafc274c | 6154 | : gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVFM); |
0bd48802 | 6155 | |
7fb37951 AMS |
6156 | #ifdef GV_UNIQUE_CHECK |
6157 | if (GvUNIQUE(gv)) { | |
666ea192 | 6158 | Perl_croak(aTHX_ "Bad symbol for form (GV is unique)"); |
5bd07a3d DM |
6159 | } |
6160 | #endif | |
a5f75d66 | 6161 | GvMULTI_on(gv); |
155aba94 | 6162 | if ((cv = GvFORM(gv))) { |
599cee73 | 6163 | if (ckWARN(WARN_REDEFINE)) { |
6867be6d | 6164 | const line_t oldline = CopLINE(PL_curcop); |
53a7735b DM |
6165 | if (PL_parser && PL_parser->copline != NOLINE) |
6166 | CopLINE_set(PL_curcop, PL_parser->copline); | |
7a5fd60d | 6167 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), |
666ea192 | 6168 | o ? "Format %"SVf" redefined" |
be2597df | 6169 | : "Format STDOUT redefined", SVfARG(cSVOPo->op_sv)); |
57843af0 | 6170 | CopLINE_set(PL_curcop, oldline); |
79072805 | 6171 | } |
8990e307 | 6172 | SvREFCNT_dec(cv); |
79072805 | 6173 | } |
3280af22 | 6174 | cv = PL_compcv; |
79072805 | 6175 | GvFORM(gv) = cv; |
65c50114 | 6176 | CvGV(cv) = gv; |
a636914a | 6177 | CvFILE_set_from_cop(cv, PL_curcop); |
79072805 | 6178 | |
a0d0e21e | 6179 | |
dd2155a4 | 6180 | pad_tidy(padtidy_FORMAT); |
79072805 | 6181 | CvROOT(cv) = newUNOP(OP_LEAVEWRITE, 0, scalarseq(block)); |
7934575e GS |
6182 | CvROOT(cv)->op_private |= OPpREFCOUNTED; |
6183 | OpREFCNT_set(CvROOT(cv), 1); | |
79072805 LW |
6184 | CvSTART(cv) = LINKLIST(CvROOT(cv)); |
6185 | CvROOT(cv)->op_next = 0; | |
a2efc822 | 6186 | CALL_PEEP(CvSTART(cv)); |
eb8433b7 NC |
6187 | #ifdef PERL_MAD |
6188 | op_getmad(o,pegop,'n'); | |
6189 | op_getmad_weak(block, pegop, 'b'); | |
6190 | #else | |
11343788 | 6191 | op_free(o); |
eb8433b7 | 6192 | #endif |
53a7735b DM |
6193 | if (PL_parser) |
6194 | PL_parser->copline = NOLINE; | |
8990e307 | 6195 | LEAVE_SCOPE(floor); |
eb8433b7 NC |
6196 | #ifdef PERL_MAD |
6197 | return pegop; | |
6198 | #endif | |
79072805 LW |
6199 | } |
6200 | ||
6201 | OP * | |
864dbfa3 | 6202 | Perl_newANONLIST(pTHX_ OP *o) |
79072805 | 6203 | { |
78c72037 | 6204 | return convert(OP_ANONLIST, OPf_SPECIAL, o); |
79072805 LW |
6205 | } |
6206 | ||
6207 | OP * | |
864dbfa3 | 6208 | Perl_newANONHASH(pTHX_ OP *o) |
79072805 | 6209 | { |
78c72037 | 6210 | return convert(OP_ANONHASH, OPf_SPECIAL, o); |
a0d0e21e LW |
6211 | } |
6212 | ||
6213 | OP * | |
864dbfa3 | 6214 | Perl_newANONSUB(pTHX_ I32 floor, OP *proto, OP *block) |
a0d0e21e | 6215 | { |
5f66b61c | 6216 | return newANONATTRSUB(floor, proto, NULL, block); |
09bef843 SB |
6217 | } |
6218 | ||
6219 | OP * | |
6220 | Perl_newANONATTRSUB(pTHX_ I32 floor, OP *proto, OP *attrs, OP *block) | |
6221 | { | |
a0d0e21e | 6222 | return newUNOP(OP_REFGEN, 0, |
09bef843 | 6223 | newSVOP(OP_ANONCODE, 0, |
ad64d0ec | 6224 | MUTABLE_SV(newATTRSUB(floor, 0, proto, attrs, block)))); |
79072805 LW |
6225 | } |
6226 | ||
6227 | OP * | |
864dbfa3 | 6228 | Perl_oopsAV(pTHX_ OP *o) |
79072805 | 6229 | { |
27da23d5 | 6230 | dVAR; |
7918f24d NC |
6231 | |
6232 | PERL_ARGS_ASSERT_OOPSAV; | |
6233 | ||
ed6116ce LW |
6234 | switch (o->op_type) { |
6235 | case OP_PADSV: | |
6236 | o->op_type = OP_PADAV; | |
22c35a8c | 6237 | o->op_ppaddr = PL_ppaddr[OP_PADAV]; |
51e247a3 | 6238 | return ref(o, OP_RV2AV); |
b2ffa427 | 6239 | |
ed6116ce | 6240 | case OP_RV2SV: |
79072805 | 6241 | o->op_type = OP_RV2AV; |
22c35a8c | 6242 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
79072805 | 6243 | ref(o, OP_RV2AV); |
ed6116ce LW |
6244 | break; |
6245 | ||
6246 | default: | |
0453d815 | 6247 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 6248 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "oops: oopsAV"); |
ed6116ce LW |
6249 | break; |
6250 | } | |
79072805 LW |
6251 | return o; |
6252 | } | |
6253 | ||
6254 | OP * | |
864dbfa3 | 6255 | Perl_oopsHV(pTHX_ OP *o) |
79072805 | 6256 | { |
27da23d5 | 6257 | dVAR; |
7918f24d NC |
6258 | |
6259 | PERL_ARGS_ASSERT_OOPSHV; | |
6260 | ||
ed6116ce LW |
6261 | switch (o->op_type) { |
6262 | case OP_PADSV: | |
6263 | case OP_PADAV: | |
6264 | o->op_type = OP_PADHV; | |
22c35a8c | 6265 | o->op_ppaddr = PL_ppaddr[OP_PADHV]; |
51e247a3 | 6266 | return ref(o, OP_RV2HV); |
ed6116ce LW |
6267 | |
6268 | case OP_RV2SV: | |
6269 | case OP_RV2AV: | |
79072805 | 6270 | o->op_type = OP_RV2HV; |
22c35a8c | 6271 | o->op_ppaddr = PL_ppaddr[OP_RV2HV]; |
79072805 | 6272 | ref(o, OP_RV2HV); |
ed6116ce LW |
6273 | break; |
6274 | ||
6275 | default: | |
0453d815 | 6276 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 6277 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "oops: oopsHV"); |
ed6116ce LW |
6278 | break; |
6279 | } | |
79072805 LW |
6280 | return o; |
6281 | } | |
6282 | ||
6283 | OP * | |
864dbfa3 | 6284 | Perl_newAVREF(pTHX_ OP *o) |
79072805 | 6285 | { |
27da23d5 | 6286 | dVAR; |
7918f24d NC |
6287 | |
6288 | PERL_ARGS_ASSERT_NEWAVREF; | |
6289 | ||
ed6116ce LW |
6290 | if (o->op_type == OP_PADANY) { |
6291 | o->op_type = OP_PADAV; | |
22c35a8c | 6292 | o->op_ppaddr = PL_ppaddr[OP_PADAV]; |
93a17b20 | 6293 | return o; |
ed6116ce | 6294 | } |
a1063b2d | 6295 | else if ((o->op_type == OP_RV2AV || o->op_type == OP_PADAV) |
9014280d PM |
6296 | && ckWARN(WARN_DEPRECATED)) { |
6297 | Perl_warner(aTHX_ packWARN(WARN_DEPRECATED), | |
a1063b2d RH |
6298 | "Using an array as a reference is deprecated"); |
6299 | } | |
79072805 LW |
6300 | return newUNOP(OP_RV2AV, 0, scalar(o)); |
6301 | } | |
6302 | ||
6303 | OP * | |
864dbfa3 | 6304 | Perl_newGVREF(pTHX_ I32 type, OP *o) |
79072805 | 6305 | { |
82092f1d | 6306 | if (type == OP_MAPSTART || type == OP_GREPSTART || type == OP_SORT) |
a0d0e21e | 6307 | return newUNOP(OP_NULL, 0, o); |
748a9306 | 6308 | return ref(newUNOP(OP_RV2GV, OPf_REF, o), type); |
79072805 LW |
6309 | } |
6310 | ||
6311 | OP * | |
864dbfa3 | 6312 | Perl_newHVREF(pTHX_ OP *o) |
79072805 | 6313 | { |
27da23d5 | 6314 | dVAR; |
7918f24d NC |
6315 | |
6316 | PERL_ARGS_ASSERT_NEWHVREF; | |
6317 | ||
ed6116ce LW |
6318 | if (o->op_type == OP_PADANY) { |
6319 | o->op_type = OP_PADHV; | |
22c35a8c | 6320 | o->op_ppaddr = PL_ppaddr[OP_PADHV]; |
93a17b20 | 6321 | return o; |
ed6116ce | 6322 | } |
a1063b2d | 6323 | else if ((o->op_type == OP_RV2HV || o->op_type == OP_PADHV) |
9014280d PM |
6324 | && ckWARN(WARN_DEPRECATED)) { |
6325 | Perl_warner(aTHX_ packWARN(WARN_DEPRECATED), | |
a1063b2d RH |
6326 | "Using a hash as a reference is deprecated"); |
6327 | } | |
79072805 LW |
6328 | return newUNOP(OP_RV2HV, 0, scalar(o)); |
6329 | } | |
6330 | ||
6331 | OP * | |
864dbfa3 | 6332 | Perl_newCVREF(pTHX_ I32 flags, OP *o) |
79072805 | 6333 | { |
c07a80fd | 6334 | return newUNOP(OP_RV2CV, flags, scalar(o)); |
79072805 LW |
6335 | } |
6336 | ||
6337 | OP * | |
864dbfa3 | 6338 | Perl_newSVREF(pTHX_ OP *o) |
79072805 | 6339 | { |
27da23d5 | 6340 | dVAR; |
7918f24d NC |
6341 | |
6342 | PERL_ARGS_ASSERT_NEWSVREF; | |
6343 | ||
ed6116ce LW |
6344 | if (o->op_type == OP_PADANY) { |
6345 | o->op_type = OP_PADSV; | |
22c35a8c | 6346 | o->op_ppaddr = PL_ppaddr[OP_PADSV]; |
93a17b20 | 6347 | return o; |
ed6116ce | 6348 | } |
79072805 LW |
6349 | return newUNOP(OP_RV2SV, 0, scalar(o)); |
6350 | } | |
6351 | ||
61b743bb DM |
6352 | /* Check routines. See the comments at the top of this file for details |
6353 | * on when these are called */ | |
79072805 LW |
6354 | |
6355 | OP * | |
cea2e8a9 | 6356 | Perl_ck_anoncode(pTHX_ OP *o) |
5f05dabc | 6357 | { |
7918f24d NC |
6358 | PERL_ARGS_ASSERT_CK_ANONCODE; |
6359 | ||
dd2155a4 | 6360 | cSVOPo->op_targ = pad_add_anon(cSVOPo->op_sv, o->op_type); |
eb8433b7 | 6361 | if (!PL_madskills) |
1d866c12 | 6362 | cSVOPo->op_sv = NULL; |
5dc0d613 | 6363 | return o; |
5f05dabc | 6364 | } |
6365 | ||
6366 | OP * | |
cea2e8a9 | 6367 | Perl_ck_bitop(pTHX_ OP *o) |
55497cff | 6368 | { |
97aff369 | 6369 | dVAR; |
7918f24d NC |
6370 | |
6371 | PERL_ARGS_ASSERT_CK_BITOP; | |
6372 | ||
276b2a0c RGS |
6373 | #define OP_IS_NUMCOMPARE(op) \ |
6374 | ((op) == OP_LT || (op) == OP_I_LT || \ | |
6375 | (op) == OP_GT || (op) == OP_I_GT || \ | |
6376 | (op) == OP_LE || (op) == OP_I_LE || \ | |
6377 | (op) == OP_GE || (op) == OP_I_GE || \ | |
6378 | (op) == OP_EQ || (op) == OP_I_EQ || \ | |
6379 | (op) == OP_NE || (op) == OP_I_NE || \ | |
6380 | (op) == OP_NCMP || (op) == OP_I_NCMP) | |
d5ec2987 | 6381 | o->op_private = (U8)(PL_hints & HINT_INTEGER); |
2b84528b RGS |
6382 | if (!(o->op_flags & OPf_STACKED) /* Not an assignment */ |
6383 | && (o->op_type == OP_BIT_OR | |
6384 | || o->op_type == OP_BIT_AND | |
6385 | || o->op_type == OP_BIT_XOR)) | |
276b2a0c | 6386 | { |
1df70142 AL |
6387 | const OP * const left = cBINOPo->op_first; |
6388 | const OP * const right = left->op_sibling; | |
96a925ab YST |
6389 | if ((OP_IS_NUMCOMPARE(left->op_type) && |
6390 | (left->op_flags & OPf_PARENS) == 0) || | |
6391 | (OP_IS_NUMCOMPARE(right->op_type) && | |
6392 | (right->op_flags & OPf_PARENS) == 0)) | |
276b2a0c RGS |
6393 | if (ckWARN(WARN_PRECEDENCE)) |
6394 | Perl_warner(aTHX_ packWARN(WARN_PRECEDENCE), | |
6395 | "Possible precedence problem on bitwise %c operator", | |
6396 | o->op_type == OP_BIT_OR ? '|' | |
6397 | : o->op_type == OP_BIT_AND ? '&' : '^' | |
6398 | ); | |
6399 | } | |
5dc0d613 | 6400 | return o; |
55497cff | 6401 | } |
6402 | ||
6403 | OP * | |
cea2e8a9 | 6404 | Perl_ck_concat(pTHX_ OP *o) |
79072805 | 6405 | { |
0bd48802 | 6406 | const OP * const kid = cUNOPo->op_first; |
7918f24d NC |
6407 | |
6408 | PERL_ARGS_ASSERT_CK_CONCAT; | |
96a5add6 | 6409 | PERL_UNUSED_CONTEXT; |
7918f24d | 6410 | |
df91b2c5 AE |
6411 | if (kid->op_type == OP_CONCAT && !(kid->op_private & OPpTARGET_MY) && |
6412 | !(kUNOP->op_first->op_flags & OPf_MOD)) | |
0165acc7 | 6413 | o->op_flags |= OPf_STACKED; |
11343788 | 6414 | return o; |
79072805 LW |
6415 | } |
6416 | ||
6417 | OP * | |
cea2e8a9 | 6418 | Perl_ck_spair(pTHX_ OP *o) |
79072805 | 6419 | { |
27da23d5 | 6420 | dVAR; |
7918f24d NC |
6421 | |
6422 | PERL_ARGS_ASSERT_CK_SPAIR; | |
6423 | ||
11343788 | 6424 | if (o->op_flags & OPf_KIDS) { |
79072805 | 6425 | OP* newop; |
a0d0e21e | 6426 | OP* kid; |
6867be6d | 6427 | const OPCODE type = o->op_type; |
5dc0d613 | 6428 | o = modkids(ck_fun(o), type); |
11343788 | 6429 | kid = cUNOPo->op_first; |
a0d0e21e | 6430 | newop = kUNOP->op_first->op_sibling; |
1496a290 AL |
6431 | if (newop) { |
6432 | const OPCODE type = newop->op_type; | |
6433 | if (newop->op_sibling || !(PL_opargs[type] & OA_RETSCALAR) || | |
6434 | type == OP_PADAV || type == OP_PADHV || | |
6435 | type == OP_RV2AV || type == OP_RV2HV) | |
6436 | return o; | |
a0d0e21e | 6437 | } |
eb8433b7 NC |
6438 | #ifdef PERL_MAD |
6439 | op_getmad(kUNOP->op_first,newop,'K'); | |
6440 | #else | |
a0d0e21e | 6441 | op_free(kUNOP->op_first); |
eb8433b7 | 6442 | #endif |
a0d0e21e LW |
6443 | kUNOP->op_first = newop; |
6444 | } | |
22c35a8c | 6445 | o->op_ppaddr = PL_ppaddr[++o->op_type]; |
11343788 | 6446 | return ck_fun(o); |
a0d0e21e LW |
6447 | } |
6448 | ||
6449 | OP * | |
cea2e8a9 | 6450 | Perl_ck_delete(pTHX_ OP *o) |
a0d0e21e | 6451 | { |
7918f24d NC |
6452 | PERL_ARGS_ASSERT_CK_DELETE; |
6453 | ||
11343788 | 6454 | o = ck_fun(o); |
5dc0d613 | 6455 | o->op_private = 0; |
11343788 | 6456 | if (o->op_flags & OPf_KIDS) { |
551405c4 | 6457 | OP * const kid = cUNOPo->op_first; |
01020589 GS |
6458 | switch (kid->op_type) { |
6459 | case OP_ASLICE: | |
6460 | o->op_flags |= OPf_SPECIAL; | |
6461 | /* FALL THROUGH */ | |
6462 | case OP_HSLICE: | |
5dc0d613 | 6463 | o->op_private |= OPpSLICE; |
01020589 GS |
6464 | break; |
6465 | case OP_AELEM: | |
6466 | o->op_flags |= OPf_SPECIAL; | |
6467 | /* FALL THROUGH */ | |
6468 | case OP_HELEM: | |
6469 | break; | |
6470 | default: | |
6471 | Perl_croak(aTHX_ "%s argument is not a HASH or ARRAY element or slice", | |
53e06cf0 | 6472 | OP_DESC(o)); |
01020589 | 6473 | } |
93c66552 | 6474 | op_null(kid); |
79072805 | 6475 | } |
11343788 | 6476 | return o; |
79072805 LW |
6477 | } |
6478 | ||
6479 | OP * | |
96e176bf CL |
6480 | Perl_ck_die(pTHX_ OP *o) |
6481 | { | |
7918f24d NC |
6482 | PERL_ARGS_ASSERT_CK_DIE; |
6483 | ||
96e176bf CL |
6484 | #ifdef VMS |
6485 | if (VMSISH_HUSHED) o->op_private |= OPpHUSH_VMSISH; | |
6486 | #endif | |
6487 | return ck_fun(o); | |
6488 | } | |
6489 | ||
6490 | OP * | |
cea2e8a9 | 6491 | Perl_ck_eof(pTHX_ OP *o) |
79072805 | 6492 | { |
97aff369 | 6493 | dVAR; |
79072805 | 6494 | |
7918f24d NC |
6495 | PERL_ARGS_ASSERT_CK_EOF; |
6496 | ||
11343788 MB |
6497 | if (o->op_flags & OPf_KIDS) { |
6498 | if (cLISTOPo->op_first->op_type == OP_STUB) { | |
1d866c12 AL |
6499 | OP * const newop |
6500 | = newUNOP(o->op_type, OPf_SPECIAL, newGVOP(OP_GV, 0, PL_argvgv)); | |
eb8433b7 NC |
6501 | #ifdef PERL_MAD |
6502 | op_getmad(o,newop,'O'); | |
6503 | #else | |
11343788 | 6504 | op_free(o); |
eb8433b7 NC |
6505 | #endif |
6506 | o = newop; | |
8990e307 | 6507 | } |
11343788 | 6508 | return ck_fun(o); |
79072805 | 6509 | } |
11343788 | 6510 | return o; |
79072805 LW |
6511 | } |
6512 | ||
6513 | OP * | |
cea2e8a9 | 6514 | Perl_ck_eval(pTHX_ OP *o) |
79072805 | 6515 | { |
27da23d5 | 6516 | dVAR; |
7918f24d NC |
6517 | |
6518 | PERL_ARGS_ASSERT_CK_EVAL; | |
6519 | ||
3280af22 | 6520 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 6521 | if (o->op_flags & OPf_KIDS) { |
46c461b5 | 6522 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
79072805 | 6523 | |
93a17b20 | 6524 | if (!kid) { |
11343788 | 6525 | o->op_flags &= ~OPf_KIDS; |
93c66552 | 6526 | op_null(o); |
79072805 | 6527 | } |
b14574b4 | 6528 | else if (kid->op_type == OP_LINESEQ || kid->op_type == OP_STUB) { |
79072805 | 6529 | LOGOP *enter; |
eb8433b7 | 6530 | #ifdef PERL_MAD |
1d866c12 | 6531 | OP* const oldo = o; |
eb8433b7 | 6532 | #endif |
79072805 | 6533 | |
11343788 | 6534 | cUNOPo->op_first = 0; |
eb8433b7 | 6535 | #ifndef PERL_MAD |
11343788 | 6536 | op_free(o); |
eb8433b7 | 6537 | #endif |
79072805 | 6538 | |
b7dc083c | 6539 | NewOp(1101, enter, 1, LOGOP); |
79072805 | 6540 | enter->op_type = OP_ENTERTRY; |
22c35a8c | 6541 | enter->op_ppaddr = PL_ppaddr[OP_ENTERTRY]; |
79072805 LW |
6542 | enter->op_private = 0; |
6543 | ||
6544 | /* establish postfix order */ | |
6545 | enter->op_next = (OP*)enter; | |
6546 | ||
11343788 MB |
6547 | o = prepend_elem(OP_LINESEQ, (OP*)enter, (OP*)kid); |
6548 | o->op_type = OP_LEAVETRY; | |
22c35a8c | 6549 | o->op_ppaddr = PL_ppaddr[OP_LEAVETRY]; |
11343788 | 6550 | enter->op_other = o; |
eb8433b7 | 6551 | op_getmad(oldo,o,'O'); |
11343788 | 6552 | return o; |
79072805 | 6553 | } |
b5c19bd7 | 6554 | else { |
473986ff | 6555 | scalar((OP*)kid); |
b5c19bd7 DM |
6556 | PL_cv_has_eval = 1; |
6557 | } | |
79072805 LW |
6558 | } |
6559 | else { | |
eb8433b7 | 6560 | #ifdef PERL_MAD |
1d866c12 | 6561 | OP* const oldo = o; |
eb8433b7 | 6562 | #else |
11343788 | 6563 | op_free(o); |
eb8433b7 | 6564 | #endif |
54b9620d | 6565 | o = newUNOP(OP_ENTEREVAL, 0, newDEFSVOP()); |
eb8433b7 | 6566 | op_getmad(oldo,o,'O'); |
79072805 | 6567 | } |
3280af22 | 6568 | o->op_targ = (PADOFFSET)PL_hints; |
7168684c | 6569 | if ((PL_hints & HINT_LOCALIZE_HH) != 0 && GvHV(PL_hintgv)) { |
996c9baa VP |
6570 | /* Store a copy of %^H that pp_entereval can pick up. */ |
6571 | OP *hhop = newSVOP(OP_HINTSEVAL, 0, | |
ad64d0ec | 6572 | MUTABLE_SV(Perl_hv_copy_hints_hv(aTHX_ GvHV(PL_hintgv)))); |
0d863452 RH |
6573 | cUNOPo->op_first->op_sibling = hhop; |
6574 | o->op_private |= OPpEVAL_HAS_HH; | |
6575 | } | |
11343788 | 6576 | return o; |
79072805 LW |
6577 | } |
6578 | ||
6579 | OP * | |
d98f61e7 GS |
6580 | Perl_ck_exit(pTHX_ OP *o) |
6581 | { | |
7918f24d NC |
6582 | PERL_ARGS_ASSERT_CK_EXIT; |
6583 | ||
d98f61e7 | 6584 | #ifdef VMS |
551405c4 | 6585 | HV * const table = GvHV(PL_hintgv); |
d98f61e7 | 6586 | if (table) { |
a4fc7abc | 6587 | SV * const * const svp = hv_fetchs(table, "vmsish_exit", FALSE); |
d98f61e7 GS |
6588 | if (svp && *svp && SvTRUE(*svp)) |
6589 | o->op_private |= OPpEXIT_VMSISH; | |
6590 | } | |
96e176bf | 6591 | if (VMSISH_HUSHED) o->op_private |= OPpHUSH_VMSISH; |
d98f61e7 GS |
6592 | #endif |
6593 | return ck_fun(o); | |
6594 | } | |
6595 | ||
6596 | OP * | |
cea2e8a9 | 6597 | Perl_ck_exec(pTHX_ OP *o) |
79072805 | 6598 | { |
7918f24d NC |
6599 | PERL_ARGS_ASSERT_CK_EXEC; |
6600 | ||
11343788 | 6601 | if (o->op_flags & OPf_STACKED) { |
6867be6d | 6602 | OP *kid; |
11343788 MB |
6603 | o = ck_fun(o); |
6604 | kid = cUNOPo->op_first->op_sibling; | |
8990e307 | 6605 | if (kid->op_type == OP_RV2GV) |
93c66552 | 6606 | op_null(kid); |
79072805 | 6607 | } |
463ee0b2 | 6608 | else |
11343788 MB |
6609 | o = listkids(o); |
6610 | return o; | |
79072805 LW |
6611 | } |
6612 | ||
6613 | OP * | |
cea2e8a9 | 6614 | Perl_ck_exists(pTHX_ OP *o) |
5f05dabc | 6615 | { |
97aff369 | 6616 | dVAR; |
7918f24d NC |
6617 | |
6618 | PERL_ARGS_ASSERT_CK_EXISTS; | |
6619 | ||
5196be3e MB |
6620 | o = ck_fun(o); |
6621 | if (o->op_flags & OPf_KIDS) { | |
46c461b5 | 6622 | OP * const kid = cUNOPo->op_first; |
afebc493 GS |
6623 | if (kid->op_type == OP_ENTERSUB) { |
6624 | (void) ref(kid, o->op_type); | |
13765c85 DM |
6625 | if (kid->op_type != OP_RV2CV |
6626 | && !(PL_parser && PL_parser->error_count)) | |
afebc493 | 6627 | Perl_croak(aTHX_ "%s argument is not a subroutine name", |
53e06cf0 | 6628 | OP_DESC(o)); |
afebc493 GS |
6629 | o->op_private |= OPpEXISTS_SUB; |
6630 | } | |
6631 | else if (kid->op_type == OP_AELEM) | |
01020589 GS |
6632 | o->op_flags |= OPf_SPECIAL; |
6633 | else if (kid->op_type != OP_HELEM) | |
b0fdf69e | 6634 | Perl_croak(aTHX_ "%s argument is not a HASH or ARRAY element or a subroutine", |
53e06cf0 | 6635 | OP_DESC(o)); |
93c66552 | 6636 | op_null(kid); |
5f05dabc | 6637 | } |
5196be3e | 6638 | return o; |
5f05dabc | 6639 | } |
6640 | ||
79072805 | 6641 | OP * |
cea2e8a9 | 6642 | Perl_ck_rvconst(pTHX_ register OP *o) |
79072805 | 6643 | { |
27da23d5 | 6644 | dVAR; |
0bd48802 | 6645 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
85e6fe83 | 6646 | |
7918f24d NC |
6647 | PERL_ARGS_ASSERT_CK_RVCONST; |
6648 | ||
3280af22 | 6649 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
e26df76a NC |
6650 | if (o->op_type == OP_RV2CV) |
6651 | o->op_private &= ~1; | |
6652 | ||
79072805 | 6653 | if (kid->op_type == OP_CONST) { |
44a8e56a | 6654 | int iscv; |
6655 | GV *gv; | |
504618e9 | 6656 | SV * const kidsv = kid->op_sv; |
44a8e56a | 6657 | |
779c5bc9 GS |
6658 | /* Is it a constant from cv_const_sv()? */ |
6659 | if (SvROK(kidsv) && SvREADONLY(kidsv)) { | |
0bd48802 | 6660 | SV * const rsv = SvRV(kidsv); |
42d0e0b7 | 6661 | const svtype type = SvTYPE(rsv); |
bd61b366 | 6662 | const char *badtype = NULL; |
779c5bc9 GS |
6663 | |
6664 | switch (o->op_type) { | |
6665 | case OP_RV2SV: | |
42d0e0b7 | 6666 | if (type > SVt_PVMG) |
779c5bc9 GS |
6667 | badtype = "a SCALAR"; |
6668 | break; | |
6669 | case OP_RV2AV: | |
42d0e0b7 | 6670 | if (type != SVt_PVAV) |
779c5bc9 GS |
6671 | badtype = "an ARRAY"; |
6672 | break; | |
6673 | case OP_RV2HV: | |
42d0e0b7 | 6674 | if (type != SVt_PVHV) |
779c5bc9 | 6675 | badtype = "a HASH"; |
779c5bc9 GS |
6676 | break; |
6677 | case OP_RV2CV: | |
42d0e0b7 | 6678 | if (type != SVt_PVCV) |
779c5bc9 GS |
6679 | badtype = "a CODE"; |
6680 | break; | |
6681 | } | |
6682 | if (badtype) | |
cea2e8a9 | 6683 | Perl_croak(aTHX_ "Constant is not %s reference", badtype); |
779c5bc9 GS |
6684 | return o; |
6685 | } | |
ce10b5d1 RGS |
6686 | else if ((o->op_type == OP_RV2HV || o->op_type == OP_RV2SV) && |
6687 | (PL_hints & HINT_STRICT_REFS) && SvPOK(kidsv)) { | |
6688 | /* If this is an access to a stash, disable "strict refs", because | |
6689 | * stashes aren't auto-vivified at compile-time (unless we store | |
6690 | * symbols in them), and we don't want to produce a run-time | |
6691 | * stricture error when auto-vivifying the stash. */ | |
6692 | const char *s = SvPV_nolen(kidsv); | |
6693 | const STRLEN l = SvCUR(kidsv); | |
6694 | if (l > 1 && s[l-1] == ':' && s[l-2] == ':') | |
6695 | o->op_private &= ~HINT_STRICT_REFS; | |
6696 | } | |
6697 | if ((o->op_private & HINT_STRICT_REFS) && (kid->op_private & OPpCONST_BARE)) { | |
5f66b61c | 6698 | const char *badthing; |
5dc0d613 | 6699 | switch (o->op_type) { |
44a8e56a | 6700 | case OP_RV2SV: |
6701 | badthing = "a SCALAR"; | |
6702 | break; | |
6703 | case OP_RV2AV: | |
6704 | badthing = "an ARRAY"; | |
6705 | break; | |
6706 | case OP_RV2HV: | |
6707 | badthing = "a HASH"; | |
6708 | break; | |
5f66b61c AL |
6709 | default: |
6710 | badthing = NULL; | |
6711 | break; | |
44a8e56a | 6712 | } |
6713 | if (badthing) | |
1c846c1f | 6714 | Perl_croak(aTHX_ |
95b63a38 | 6715 | "Can't use bareword (\"%"SVf"\") as %s ref while \"strict refs\" in use", |
be2597df | 6716 | SVfARG(kidsv), badthing); |
44a8e56a | 6717 | } |
93233ece CS |
6718 | /* |
6719 | * This is a little tricky. We only want to add the symbol if we | |
6720 | * didn't add it in the lexer. Otherwise we get duplicate strict | |
6721 | * warnings. But if we didn't add it in the lexer, we must at | |
6722 | * least pretend like we wanted to add it even if it existed before, | |
6723 | * or we get possible typo warnings. OPpCONST_ENTERED says | |
6724 | * whether the lexer already added THIS instance of this symbol. | |
6725 | */ | |
5196be3e | 6726 | iscv = (o->op_type == OP_RV2CV) * 2; |
93233ece | 6727 | do { |
7a5fd60d | 6728 | gv = gv_fetchsv(kidsv, |
748a9306 | 6729 | iscv | !(kid->op_private & OPpCONST_ENTERED), |
a0d0e21e LW |
6730 | iscv |
6731 | ? SVt_PVCV | |
11343788 | 6732 | : o->op_type == OP_RV2SV |
a0d0e21e | 6733 | ? SVt_PV |
11343788 | 6734 | : o->op_type == OP_RV2AV |
a0d0e21e | 6735 | ? SVt_PVAV |
11343788 | 6736 | : o->op_type == OP_RV2HV |
a0d0e21e LW |
6737 | ? SVt_PVHV |
6738 | : SVt_PVGV); | |
93233ece CS |
6739 | } while (!gv && !(kid->op_private & OPpCONST_ENTERED) && !iscv++); |
6740 | if (gv) { | |
6741 | kid->op_type = OP_GV; | |
6742 | SvREFCNT_dec(kid->op_sv); | |
350de78d | 6743 | #ifdef USE_ITHREADS |
638eceb6 | 6744 | /* XXX hack: dependence on sizeof(PADOP) <= sizeof(SVOP) */ |
350de78d | 6745 | kPADOP->op_padix = pad_alloc(OP_GV, SVs_PADTMP); |
dd2155a4 | 6746 | SvREFCNT_dec(PAD_SVl(kPADOP->op_padix)); |
743e66e6 | 6747 | GvIN_PAD_on(gv); |
ad64d0ec | 6748 | PAD_SETSV(kPADOP->op_padix, MUTABLE_SV(SvREFCNT_inc_simple_NN(gv))); |
350de78d | 6749 | #else |
b37c2d43 | 6750 | kid->op_sv = SvREFCNT_inc_simple_NN(gv); |
350de78d | 6751 | #endif |
23f1ca44 | 6752 | kid->op_private = 0; |
76cd736e | 6753 | kid->op_ppaddr = PL_ppaddr[OP_GV]; |
a0d0e21e | 6754 | } |
79072805 | 6755 | } |
11343788 | 6756 | return o; |
79072805 LW |
6757 | } |
6758 | ||
6759 | OP * | |
cea2e8a9 | 6760 | Perl_ck_ftst(pTHX_ OP *o) |
79072805 | 6761 | { |
27da23d5 | 6762 | dVAR; |
6867be6d | 6763 | const I32 type = o->op_type; |
79072805 | 6764 | |
7918f24d NC |
6765 | PERL_ARGS_ASSERT_CK_FTST; |
6766 | ||
d0dca557 | 6767 | if (o->op_flags & OPf_REF) { |
6f207bd3 | 6768 | NOOP; |
d0dca557 JD |
6769 | } |
6770 | else if (o->op_flags & OPf_KIDS && cUNOPo->op_first->op_type != OP_STUB) { | |
551405c4 | 6771 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
1496a290 | 6772 | const OPCODE kidtype = kid->op_type; |
79072805 | 6773 | |
1496a290 | 6774 | if (kidtype == OP_CONST && (kid->op_private & OPpCONST_BARE)) { |
551405c4 | 6775 | OP * const newop = newGVOP(type, OPf_REF, |
f776e3cd | 6776 | gv_fetchsv(kid->op_sv, GV_ADD, SVt_PVIO)); |
eb8433b7 NC |
6777 | #ifdef PERL_MAD |
6778 | op_getmad(o,newop,'O'); | |
6779 | #else | |
11343788 | 6780 | op_free(o); |
eb8433b7 | 6781 | #endif |
1d866c12 | 6782 | return newop; |
79072805 | 6783 | } |
6ecf81d6 | 6784 | if ((PL_hints & HINT_FILETEST_ACCESS) && OP_IS_FILETEST_ACCESS(o->op_type)) |
1af34c76 | 6785 | o->op_private |= OPpFT_ACCESS; |
1496a290 AL |
6786 | if (PL_check[kidtype] == MEMBER_TO_FPTR(Perl_ck_ftst) |
6787 | && kidtype != OP_STAT && kidtype != OP_LSTAT) | |
fbb0b3b3 | 6788 | o->op_private |= OPpFT_STACKED; |
79072805 LW |
6789 | } |
6790 | else { | |
eb8433b7 | 6791 | #ifdef PERL_MAD |
1d866c12 | 6792 | OP* const oldo = o; |
eb8433b7 | 6793 | #else |
11343788 | 6794 | op_free(o); |
eb8433b7 | 6795 | #endif |
79072805 | 6796 | if (type == OP_FTTTY) |
8fde6460 | 6797 | o = newGVOP(type, OPf_REF, PL_stdingv); |
79072805 | 6798 | else |
d0dca557 | 6799 | o = newUNOP(type, 0, newDEFSVOP()); |
eb8433b7 | 6800 | op_getmad(oldo,o,'O'); |
79072805 | 6801 | } |
11343788 | 6802 | return o; |
79072805 LW |
6803 | } |
6804 | ||
6805 | OP * | |
cea2e8a9 | 6806 | Perl_ck_fun(pTHX_ OP *o) |
79072805 | 6807 | { |
97aff369 | 6808 | dVAR; |
6867be6d | 6809 | const int type = o->op_type; |
22c35a8c | 6810 | register I32 oa = PL_opargs[type] >> OASHIFT; |
aeea060c | 6811 | |
7918f24d NC |
6812 | PERL_ARGS_ASSERT_CK_FUN; |
6813 | ||
11343788 | 6814 | if (o->op_flags & OPf_STACKED) { |
79072805 LW |
6815 | if ((oa & OA_OPTIONAL) && (oa >> 4) && !((oa >> 4) & OA_OPTIONAL)) |
6816 | oa &= ~OA_OPTIONAL; | |
6817 | else | |
11343788 | 6818 | return no_fh_allowed(o); |
79072805 LW |
6819 | } |
6820 | ||
11343788 | 6821 | if (o->op_flags & OPf_KIDS) { |
6867be6d AL |
6822 | OP **tokid = &cLISTOPo->op_first; |
6823 | register OP *kid = cLISTOPo->op_first; | |
6824 | OP *sibl; | |
6825 | I32 numargs = 0; | |
6826 | ||
8990e307 | 6827 | if (kid->op_type == OP_PUSHMARK || |
155aba94 | 6828 | (kid->op_type == OP_NULL && kid->op_targ == OP_PUSHMARK)) |
8990e307 | 6829 | { |
79072805 LW |
6830 | tokid = &kid->op_sibling; |
6831 | kid = kid->op_sibling; | |
6832 | } | |
22c35a8c | 6833 | if (!kid && PL_opargs[type] & OA_DEFGV) |
54b9620d | 6834 | *tokid = kid = newDEFSVOP(); |
79072805 LW |
6835 | |
6836 | while (oa && kid) { | |
6837 | numargs++; | |
6838 | sibl = kid->op_sibling; | |
eb8433b7 NC |
6839 | #ifdef PERL_MAD |
6840 | if (!sibl && kid->op_type == OP_STUB) { | |
6841 | numargs--; | |
6842 | break; | |
6843 | } | |
6844 | #endif | |
79072805 LW |
6845 | switch (oa & 7) { |
6846 | case OA_SCALAR: | |
62c18ce2 GS |
6847 | /* list seen where single (scalar) arg expected? */ |
6848 | if (numargs == 1 && !(oa >> 4) | |
6849 | && kid->op_type == OP_LIST && type != OP_SCALAR) | |
6850 | { | |
6851 | return too_many_arguments(o,PL_op_desc[type]); | |
6852 | } | |
79072805 LW |
6853 | scalar(kid); |
6854 | break; | |
6855 | case OA_LIST: | |
6856 | if (oa < 16) { | |
6857 | kid = 0; | |
6858 | continue; | |
6859 | } | |
6860 | else | |
6861 | list(kid); | |
6862 | break; | |
6863 | case OA_AVREF: | |
936edb8b | 6864 | if ((type == OP_PUSH || type == OP_UNSHIFT) |
f87c3213 | 6865 | && !kid->op_sibling && ckWARN(WARN_SYNTAX)) |
9014280d | 6866 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
de4864e4 | 6867 | "Useless use of %s with no values", |
936edb8b | 6868 | PL_op_desc[type]); |
b2ffa427 | 6869 | |
79072805 | 6870 | if (kid->op_type == OP_CONST && |
62c18ce2 GS |
6871 | (kid->op_private & OPpCONST_BARE)) |
6872 | { | |
551405c4 | 6873 | OP * const newop = newAVREF(newGVOP(OP_GV, 0, |
f776e3cd | 6874 | gv_fetchsv(((SVOP*)kid)->op_sv, GV_ADD, SVt_PVAV) )); |
12bcd1a6 PM |
6875 | if (ckWARN2(WARN_DEPRECATED, WARN_SYNTAX)) |
6876 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), | |
7a5fd60d | 6877 | "Array @%"SVf" missing the @ in argument %"IVdf" of %s()", |
be2597df | 6878 | SVfARG(((SVOP*)kid)->op_sv), (IV)numargs, PL_op_desc[type]); |
eb8433b7 NC |
6879 | #ifdef PERL_MAD |
6880 | op_getmad(kid,newop,'K'); | |
6881 | #else | |
79072805 | 6882 | op_free(kid); |
eb8433b7 | 6883 | #endif |
79072805 LW |
6884 | kid = newop; |
6885 | kid->op_sibling = sibl; | |
6886 | *tokid = kid; | |
6887 | } | |
8990e307 | 6888 | else if (kid->op_type != OP_RV2AV && kid->op_type != OP_PADAV) |
35cd451c | 6889 | bad_type(numargs, "array", PL_op_desc[type], kid); |
a0d0e21e | 6890 | mod(kid, type); |
79072805 LW |
6891 | break; |
6892 | case OA_HVREF: | |
6893 | if (kid->op_type == OP_CONST && | |
62c18ce2 GS |
6894 | (kid->op_private & OPpCONST_BARE)) |
6895 | { | |
551405c4 | 6896 | OP * const newop = newHVREF(newGVOP(OP_GV, 0, |
f776e3cd | 6897 | gv_fetchsv(((SVOP*)kid)->op_sv, GV_ADD, SVt_PVHV) )); |
12bcd1a6 PM |
6898 | if (ckWARN2(WARN_DEPRECATED, WARN_SYNTAX)) |
6899 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), | |
7a5fd60d | 6900 | "Hash %%%"SVf" missing the %% in argument %"IVdf" of %s()", |
be2597df | 6901 | SVfARG(((SVOP*)kid)->op_sv), (IV)numargs, PL_op_desc[type]); |
eb8433b7 NC |
6902 | #ifdef PERL_MAD |
6903 | op_getmad(kid,newop,'K'); | |
6904 | #else | |
79072805 | 6905 | op_free(kid); |
eb8433b7 | 6906 | #endif |
79072805 LW |
6907 | kid = newop; |
6908 | kid->op_sibling = sibl; | |
6909 | *tokid = kid; | |
6910 | } | |
8990e307 | 6911 | else if (kid->op_type != OP_RV2HV && kid->op_type != OP_PADHV) |
35cd451c | 6912 | bad_type(numargs, "hash", PL_op_desc[type], kid); |
a0d0e21e | 6913 | mod(kid, type); |
79072805 LW |
6914 | break; |
6915 | case OA_CVREF: | |
6916 | { | |
551405c4 | 6917 | OP * const newop = newUNOP(OP_NULL, 0, kid); |
79072805 LW |
6918 | kid->op_sibling = 0; |
6919 | linklist(kid); | |
6920 | newop->op_next = newop; | |
6921 | kid = newop; | |
6922 | kid->op_sibling = sibl; | |
6923 | *tokid = kid; | |
6924 | } | |
6925 | break; | |
6926 | case OA_FILEREF: | |
c340be78 | 6927 | if (kid->op_type != OP_GV && kid->op_type != OP_RV2GV) { |
79072805 | 6928 | if (kid->op_type == OP_CONST && |
62c18ce2 GS |
6929 | (kid->op_private & OPpCONST_BARE)) |
6930 | { | |
0bd48802 | 6931 | OP * const newop = newGVOP(OP_GV, 0, |
f776e3cd | 6932 | gv_fetchsv(((SVOP*)kid)->op_sv, GV_ADD, SVt_PVIO)); |
afbdacea | 6933 | if (!(o->op_private & 1) && /* if not unop */ |
8a996ce8 | 6934 | kid == cLISTOPo->op_last) |
364daeac | 6935 | cLISTOPo->op_last = newop; |
eb8433b7 NC |
6936 | #ifdef PERL_MAD |
6937 | op_getmad(kid,newop,'K'); | |
6938 | #else | |
79072805 | 6939 | op_free(kid); |
eb8433b7 | 6940 | #endif |
79072805 LW |
6941 | kid = newop; |
6942 | } | |
1ea32a52 GS |
6943 | else if (kid->op_type == OP_READLINE) { |
6944 | /* neophyte patrol: open(<FH>), close(<FH>) etc. */ | |
53e06cf0 | 6945 | bad_type(numargs, "HANDLE", OP_DESC(o), kid); |
1ea32a52 | 6946 | } |
79072805 | 6947 | else { |
35cd451c | 6948 | I32 flags = OPf_SPECIAL; |
a6c40364 | 6949 | I32 priv = 0; |
2c8ac474 GS |
6950 | PADOFFSET targ = 0; |
6951 | ||
35cd451c | 6952 | /* is this op a FH constructor? */ |
853846ea | 6953 | if (is_handle_constructor(o,numargs)) { |
bd61b366 | 6954 | const char *name = NULL; |
dd2155a4 | 6955 | STRLEN len = 0; |
2c8ac474 GS |
6956 | |
6957 | flags = 0; | |
6958 | /* Set a flag to tell rv2gv to vivify | |
853846ea NIS |
6959 | * need to "prove" flag does not mean something |
6960 | * else already - NI-S 1999/05/07 | |
2c8ac474 GS |
6961 | */ |
6962 | priv = OPpDEREF; | |
6963 | if (kid->op_type == OP_PADSV) { | |
f8503592 NC |
6964 | SV *const namesv |
6965 | = PAD_COMPNAME_SV(kid->op_targ); | |
6966 | name = SvPV_const(namesv, len); | |
2c8ac474 GS |
6967 | } |
6968 | else if (kid->op_type == OP_RV2SV | |
6969 | && kUNOP->op_first->op_type == OP_GV) | |
6970 | { | |
0bd48802 | 6971 | GV * const gv = cGVOPx_gv(kUNOP->op_first); |
2c8ac474 GS |
6972 | name = GvNAME(gv); |
6973 | len = GvNAMELEN(gv); | |
6974 | } | |
afd1915d GS |
6975 | else if (kid->op_type == OP_AELEM |
6976 | || kid->op_type == OP_HELEM) | |
6977 | { | |
735fec84 | 6978 | OP *firstop; |
551405c4 | 6979 | OP *op = ((BINOP*)kid)->op_first; |
a4fc7abc | 6980 | name = NULL; |
551405c4 | 6981 | if (op) { |
a0714e2c | 6982 | SV *tmpstr = NULL; |
551405c4 | 6983 | const char * const a = |
666ea192 JH |
6984 | kid->op_type == OP_AELEM ? |
6985 | "[]" : "{}"; | |
0c4b0a3f JH |
6986 | if (((op->op_type == OP_RV2AV) || |
6987 | (op->op_type == OP_RV2HV)) && | |
735fec84 RGS |
6988 | (firstop = ((UNOP*)op)->op_first) && |
6989 | (firstop->op_type == OP_GV)) { | |
0c4b0a3f | 6990 | /* packagevar $a[] or $h{} */ |
735fec84 | 6991 | GV * const gv = cGVOPx_gv(firstop); |
0c4b0a3f JH |
6992 | if (gv) |
6993 | tmpstr = | |
6994 | Perl_newSVpvf(aTHX_ | |
6995 | "%s%c...%c", | |
6996 | GvNAME(gv), | |
6997 | a[0], a[1]); | |
6998 | } | |
6999 | else if (op->op_type == OP_PADAV | |
7000 | || op->op_type == OP_PADHV) { | |
7001 | /* lexicalvar $a[] or $h{} */ | |
551405c4 | 7002 | const char * const padname = |
0c4b0a3f JH |
7003 | PAD_COMPNAME_PV(op->op_targ); |
7004 | if (padname) | |
7005 | tmpstr = | |
7006 | Perl_newSVpvf(aTHX_ | |
7007 | "%s%c...%c", | |
7008 | padname + 1, | |
7009 | a[0], a[1]); | |
0c4b0a3f JH |
7010 | } |
7011 | if (tmpstr) { | |
93524f2b | 7012 | name = SvPV_const(tmpstr, len); |
0c4b0a3f JH |
7013 | sv_2mortal(tmpstr); |
7014 | } | |
7015 | } | |
7016 | if (!name) { | |
7017 | name = "__ANONIO__"; | |
7018 | len = 10; | |
7019 | } | |
7020 | mod(kid, type); | |
afd1915d | 7021 | } |
2c8ac474 GS |
7022 | if (name) { |
7023 | SV *namesv; | |
7024 | targ = pad_alloc(OP_RV2GV, SVs_PADTMP); | |
dd2155a4 | 7025 | namesv = PAD_SVl(targ); |
862a34c6 | 7026 | SvUPGRADE(namesv, SVt_PV); |
2c8ac474 | 7027 | if (*name != '$') |
76f68e9b | 7028 | sv_setpvs(namesv, "$"); |
2c8ac474 GS |
7029 | sv_catpvn(namesv, name, len); |
7030 | } | |
853846ea | 7031 | } |
79072805 | 7032 | kid->op_sibling = 0; |
35cd451c | 7033 | kid = newUNOP(OP_RV2GV, flags, scalar(kid)); |
2c8ac474 GS |
7034 | kid->op_targ = targ; |
7035 | kid->op_private |= priv; | |
79072805 LW |
7036 | } |
7037 | kid->op_sibling = sibl; | |
7038 | *tokid = kid; | |
7039 | } | |
7040 | scalar(kid); | |
7041 | break; | |
7042 | case OA_SCALARREF: | |
a0d0e21e | 7043 | mod(scalar(kid), type); |
79072805 LW |
7044 | break; |
7045 | } | |
7046 | oa >>= 4; | |
7047 | tokid = &kid->op_sibling; | |
7048 | kid = kid->op_sibling; | |
7049 | } | |
eb8433b7 NC |
7050 | #ifdef PERL_MAD |
7051 | if (kid && kid->op_type != OP_STUB) | |
7052 | return too_many_arguments(o,OP_DESC(o)); | |
7053 | o->op_private |= numargs; | |
7054 | #else | |
7055 | /* FIXME - should the numargs move as for the PERL_MAD case? */ | |
11343788 | 7056 | o->op_private |= numargs; |
79072805 | 7057 | if (kid) |
53e06cf0 | 7058 | return too_many_arguments(o,OP_DESC(o)); |
eb8433b7 | 7059 | #endif |
11343788 | 7060 | listkids(o); |
79072805 | 7061 | } |
22c35a8c | 7062 | else if (PL_opargs[type] & OA_DEFGV) { |
c56915e3 | 7063 | #ifdef PERL_MAD |
c7fe699d | 7064 | OP *newop = newUNOP(type, 0, newDEFSVOP()); |
c56915e3 | 7065 | op_getmad(o,newop,'O'); |
c7fe699d | 7066 | return newop; |
c56915e3 | 7067 | #else |
c7fe699d | 7068 | /* Ordering of these two is important to keep f_map.t passing. */ |
11343788 | 7069 | op_free(o); |
c7fe699d | 7070 | return newUNOP(type, 0, newDEFSVOP()); |
c56915e3 | 7071 | #endif |
a0d0e21e LW |
7072 | } |
7073 | ||
79072805 LW |
7074 | if (oa) { |
7075 | while (oa & OA_OPTIONAL) | |
7076 | oa >>= 4; | |
7077 | if (oa && oa != OA_LIST) | |
53e06cf0 | 7078 | return too_few_arguments(o,OP_DESC(o)); |
79072805 | 7079 | } |
11343788 | 7080 | return o; |
79072805 LW |
7081 | } |
7082 | ||
7083 | OP * | |
cea2e8a9 | 7084 | Perl_ck_glob(pTHX_ OP *o) |
79072805 | 7085 | { |
27da23d5 | 7086 | dVAR; |
fb73857a | 7087 | GV *gv; |
7088 | ||
7918f24d NC |
7089 | PERL_ARGS_ASSERT_CK_GLOB; |
7090 | ||
649da076 | 7091 | o = ck_fun(o); |
1f2bfc8a | 7092 | if ((o->op_flags & OPf_KIDS) && !cLISTOPo->op_first->op_sibling) |
54b9620d | 7093 | append_elem(OP_GLOB, o, newDEFSVOP()); |
fb73857a | 7094 | |
fafc274c | 7095 | if (!((gv = gv_fetchpvs("glob", GV_NOTQUAL, SVt_PVCV)) |
b9f751c0 GS |
7096 | && GvCVu(gv) && GvIMPORTED_CV(gv))) |
7097 | { | |
5c1737d1 | 7098 | gv = gv_fetchpvs("CORE::GLOBAL::glob", 0, SVt_PVCV); |
b9f751c0 | 7099 | } |
b1cb66bf | 7100 | |
52bb0670 | 7101 | #if !defined(PERL_EXTERNAL_GLOB) |
72b16652 | 7102 | /* XXX this can be tightened up and made more failsafe. */ |
f444d496 | 7103 | if (!(gv && GvCVu(gv) && GvIMPORTED_CV(gv))) { |
7d3fb230 | 7104 | GV *glob_gv; |
72b16652 | 7105 | ENTER; |
00ca71c1 | 7106 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, |
a0714e2c | 7107 | newSVpvs("File::Glob"), NULL, NULL, NULL); |
5c1737d1 NC |
7108 | gv = gv_fetchpvs("CORE::GLOBAL::glob", 0, SVt_PVCV); |
7109 | glob_gv = gv_fetchpvs("File::Glob::csh_glob", 0, SVt_PVCV); | |
7d3fb230 | 7110 | GvCV(gv) = GvCV(glob_gv); |
ad64d0ec | 7111 | SvREFCNT_inc_void(MUTABLE_SV(GvCV(gv))); |
7d3fb230 | 7112 | GvIMPORTED_CV_on(gv); |
72b16652 GS |
7113 | LEAVE; |
7114 | } | |
52bb0670 | 7115 | #endif /* PERL_EXTERNAL_GLOB */ |
72b16652 | 7116 | |
b9f751c0 | 7117 | if (gv && GvCVu(gv) && GvIMPORTED_CV(gv)) { |
5196be3e | 7118 | append_elem(OP_GLOB, o, |
80252599 | 7119 | newSVOP(OP_CONST, 0, newSViv(PL_glob_index++))); |
1f2bfc8a | 7120 | o->op_type = OP_LIST; |
22c35a8c | 7121 | o->op_ppaddr = PL_ppaddr[OP_LIST]; |
1f2bfc8a | 7122 | cLISTOPo->op_first->op_type = OP_PUSHMARK; |
22c35a8c | 7123 | cLISTOPo->op_first->op_ppaddr = PL_ppaddr[OP_PUSHMARK]; |
ad33f57d | 7124 | cLISTOPo->op_first->op_targ = 0; |
1f2bfc8a | 7125 | o = newUNOP(OP_ENTERSUB, OPf_STACKED, |
aeea060c | 7126 | append_elem(OP_LIST, o, |
1f2bfc8a MB |
7127 | scalar(newUNOP(OP_RV2CV, 0, |
7128 | newGVOP(OP_GV, 0, gv))))); | |
d58bf5aa MB |
7129 | o = newUNOP(OP_NULL, 0, ck_subr(o)); |
7130 | o->op_targ = OP_GLOB; /* hint at what it used to be */ | |
7131 | return o; | |
b1cb66bf | 7132 | } |
7133 | gv = newGVgen("main"); | |
a0d0e21e | 7134 | gv_IOadd(gv); |
11343788 MB |
7135 | append_elem(OP_GLOB, o, newGVOP(OP_GV, 0, gv)); |
7136 | scalarkids(o); | |
649da076 | 7137 | return o; |
79072805 LW |
7138 | } |
7139 | ||
7140 | OP * | |
cea2e8a9 | 7141 | Perl_ck_grep(pTHX_ OP *o) |
79072805 | 7142 | { |
27da23d5 | 7143 | dVAR; |
03ca120d | 7144 | LOGOP *gwop = NULL; |
79072805 | 7145 | OP *kid; |
6867be6d | 7146 | const OPCODE type = o->op_type == OP_GREPSTART ? OP_GREPWHILE : OP_MAPWHILE; |
9f7d9405 | 7147 | PADOFFSET offset; |
79072805 | 7148 | |
7918f24d NC |
7149 | PERL_ARGS_ASSERT_CK_GREP; |
7150 | ||
22c35a8c | 7151 | o->op_ppaddr = PL_ppaddr[OP_GREPSTART]; |
13765c85 | 7152 | /* don't allocate gwop here, as we may leak it if PL_parser->error_count > 0 */ |
aeea060c | 7153 | |
11343788 | 7154 | if (o->op_flags & OPf_STACKED) { |
a0d0e21e | 7155 | OP* k; |
11343788 MB |
7156 | o = ck_sort(o); |
7157 | kid = cLISTOPo->op_first->op_sibling; | |
d09ad856 BS |
7158 | if (!cUNOPx(kid)->op_next) |
7159 | Perl_croak(aTHX_ "panic: ck_grep"); | |
e3c9a8b9 | 7160 | for (k = cUNOPx(kid)->op_first; k; k = k->op_next) { |
a0d0e21e LW |
7161 | kid = k; |
7162 | } | |
03ca120d | 7163 | NewOp(1101, gwop, 1, LOGOP); |
a0d0e21e | 7164 | kid->op_next = (OP*)gwop; |
11343788 | 7165 | o->op_flags &= ~OPf_STACKED; |
93a17b20 | 7166 | } |
11343788 | 7167 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e LW |
7168 | if (type == OP_MAPWHILE) |
7169 | list(kid); | |
7170 | else | |
7171 | scalar(kid); | |
11343788 | 7172 | o = ck_fun(o); |
13765c85 | 7173 | if (PL_parser && PL_parser->error_count) |
11343788 | 7174 | return o; |
aeea060c | 7175 | kid = cLISTOPo->op_first->op_sibling; |
79072805 | 7176 | if (kid->op_type != OP_NULL) |
cea2e8a9 | 7177 | Perl_croak(aTHX_ "panic: ck_grep"); |
79072805 LW |
7178 | kid = kUNOP->op_first; |
7179 | ||
03ca120d MHM |
7180 | if (!gwop) |
7181 | NewOp(1101, gwop, 1, LOGOP); | |
a0d0e21e | 7182 | gwop->op_type = type; |
22c35a8c | 7183 | gwop->op_ppaddr = PL_ppaddr[type]; |
11343788 | 7184 | gwop->op_first = listkids(o); |
79072805 | 7185 | gwop->op_flags |= OPf_KIDS; |
79072805 | 7186 | gwop->op_other = LINKLIST(kid); |
79072805 | 7187 | kid->op_next = (OP*)gwop; |
59f00321 | 7188 | offset = pad_findmy("$_"); |
00b1698f | 7189 | if (offset == NOT_IN_PAD || PAD_COMPNAME_FLAGS_isOUR(offset)) { |
59f00321 RGS |
7190 | o->op_private = gwop->op_private = 0; |
7191 | gwop->op_targ = pad_alloc(type, SVs_PADTMP); | |
7192 | } | |
7193 | else { | |
7194 | o->op_private = gwop->op_private = OPpGREP_LEX; | |
7195 | gwop->op_targ = o->op_targ = offset; | |
7196 | } | |
79072805 | 7197 | |
11343788 | 7198 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e | 7199 | if (!kid || !kid->op_sibling) |
53e06cf0 | 7200 | return too_few_arguments(o,OP_DESC(o)); |
a0d0e21e LW |
7201 | for (kid = kid->op_sibling; kid; kid = kid->op_sibling) |
7202 | mod(kid, OP_GREPSTART); | |
7203 | ||
79072805 LW |
7204 | return (OP*)gwop; |
7205 | } | |
7206 | ||
7207 | OP * | |
cea2e8a9 | 7208 | Perl_ck_index(pTHX_ OP *o) |
79072805 | 7209 | { |
7918f24d NC |
7210 | PERL_ARGS_ASSERT_CK_INDEX; |
7211 | ||
11343788 MB |
7212 | if (o->op_flags & OPf_KIDS) { |
7213 | OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
0b71040e LW |
7214 | if (kid) |
7215 | kid = kid->op_sibling; /* get past "big" */ | |
79072805 | 7216 | if (kid && kid->op_type == OP_CONST) |
2779dcf1 | 7217 | fbm_compile(((SVOP*)kid)->op_sv, 0); |
79072805 | 7218 | } |
11343788 | 7219 | return ck_fun(o); |
79072805 LW |
7220 | } |
7221 | ||
7222 | OP * | |
cea2e8a9 | 7223 | Perl_ck_lfun(pTHX_ OP *o) |
79072805 | 7224 | { |
6867be6d | 7225 | const OPCODE type = o->op_type; |
7918f24d NC |
7226 | |
7227 | PERL_ARGS_ASSERT_CK_LFUN; | |
7228 | ||
5dc0d613 | 7229 | return modkids(ck_fun(o), type); |
79072805 LW |
7230 | } |
7231 | ||
7232 | OP * | |
cea2e8a9 | 7233 | Perl_ck_defined(pTHX_ OP *o) /* 19990527 MJD */ |
69794302 | 7234 | { |
7918f24d NC |
7235 | PERL_ARGS_ASSERT_CK_DEFINED; |
7236 | ||
12bcd1a6 | 7237 | if ((o->op_flags & OPf_KIDS) && ckWARN2(WARN_DEPRECATED, WARN_SYNTAX)) { |
d0334bed GS |
7238 | switch (cUNOPo->op_first->op_type) { |
7239 | case OP_RV2AV: | |
a8739d98 JH |
7240 | /* This is needed for |
7241 | if (defined %stash::) | |
7242 | to work. Do not break Tk. | |
7243 | */ | |
1c846c1f | 7244 | break; /* Globals via GV can be undef */ |
d0334bed GS |
7245 | case OP_PADAV: |
7246 | case OP_AASSIGN: /* Is this a good idea? */ | |
12bcd1a6 | 7247 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
f10b0346 | 7248 | "defined(@array) is deprecated"); |
12bcd1a6 | 7249 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
cc507455 | 7250 | "\t(Maybe you should just omit the defined()?)\n"); |
69794302 | 7251 | break; |
d0334bed | 7252 | case OP_RV2HV: |
a8739d98 JH |
7253 | /* This is needed for |
7254 | if (defined %stash::) | |
7255 | to work. Do not break Tk. | |
7256 | */ | |
1c846c1f | 7257 | break; /* Globals via GV can be undef */ |
d0334bed | 7258 | case OP_PADHV: |
12bcd1a6 | 7259 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
894356b3 | 7260 | "defined(%%hash) is deprecated"); |
12bcd1a6 | 7261 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
cc507455 | 7262 | "\t(Maybe you should just omit the defined()?)\n"); |
d0334bed GS |
7263 | break; |
7264 | default: | |
7265 | /* no warning */ | |
7266 | break; | |
7267 | } | |
69794302 MJD |
7268 | } |
7269 | return ck_rfun(o); | |
7270 | } | |
7271 | ||
7272 | OP * | |
e4b7ebf3 RGS |
7273 | Perl_ck_readline(pTHX_ OP *o) |
7274 | { | |
7918f24d NC |
7275 | PERL_ARGS_ASSERT_CK_READLINE; |
7276 | ||
e4b7ebf3 RGS |
7277 | if (!(o->op_flags & OPf_KIDS)) { |
7278 | OP * const newop | |
7279 | = newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, PL_argvgv)); | |
7280 | #ifdef PERL_MAD | |
7281 | op_getmad(o,newop,'O'); | |
7282 | #else | |
7283 | op_free(o); | |
7284 | #endif | |
7285 | return newop; | |
7286 | } | |
7287 | return o; | |
7288 | } | |
7289 | ||
7290 | OP * | |
cea2e8a9 | 7291 | Perl_ck_rfun(pTHX_ OP *o) |
8990e307 | 7292 | { |
6867be6d | 7293 | const OPCODE type = o->op_type; |
7918f24d NC |
7294 | |
7295 | PERL_ARGS_ASSERT_CK_RFUN; | |
7296 | ||
5dc0d613 | 7297 | return refkids(ck_fun(o), type); |
8990e307 LW |
7298 | } |
7299 | ||
7300 | OP * | |
cea2e8a9 | 7301 | Perl_ck_listiob(pTHX_ OP *o) |
79072805 LW |
7302 | { |
7303 | register OP *kid; | |
aeea060c | 7304 | |
7918f24d NC |
7305 | PERL_ARGS_ASSERT_CK_LISTIOB; |
7306 | ||
11343788 | 7307 | kid = cLISTOPo->op_first; |
79072805 | 7308 | if (!kid) { |
11343788 MB |
7309 | o = force_list(o); |
7310 | kid = cLISTOPo->op_first; | |
79072805 LW |
7311 | } |
7312 | if (kid->op_type == OP_PUSHMARK) | |
7313 | kid = kid->op_sibling; | |
11343788 | 7314 | if (kid && o->op_flags & OPf_STACKED) |
79072805 LW |
7315 | kid = kid->op_sibling; |
7316 | else if (kid && !kid->op_sibling) { /* print HANDLE; */ | |
7317 | if (kid->op_type == OP_CONST && kid->op_private & OPpCONST_BARE) { | |
11343788 | 7318 | o->op_flags |= OPf_STACKED; /* make it a filehandle */ |
748a9306 | 7319 | kid = newUNOP(OP_RV2GV, OPf_REF, scalar(kid)); |
11343788 MB |
7320 | cLISTOPo->op_first->op_sibling = kid; |
7321 | cLISTOPo->op_last = kid; | |
79072805 LW |
7322 | kid = kid->op_sibling; |
7323 | } | |
7324 | } | |
b2ffa427 | 7325 | |
79072805 | 7326 | if (!kid) |
54b9620d | 7327 | append_elem(o->op_type, o, newDEFSVOP()); |
79072805 | 7328 | |
2de3dbcc | 7329 | return listkids(o); |
bbce6d69 | 7330 | } |
7331 | ||
7332 | OP * | |
0d863452 RH |
7333 | Perl_ck_smartmatch(pTHX_ OP *o) |
7334 | { | |
97aff369 | 7335 | dVAR; |
0d863452 RH |
7336 | if (0 == (o->op_flags & OPf_SPECIAL)) { |
7337 | OP *first = cBINOPo->op_first; | |
7338 | OP *second = first->op_sibling; | |
7339 | ||
7340 | /* Implicitly take a reference to an array or hash */ | |
5f66b61c | 7341 | first->op_sibling = NULL; |
0d863452 RH |
7342 | first = cBINOPo->op_first = ref_array_or_hash(first); |
7343 | second = first->op_sibling = ref_array_or_hash(second); | |
7344 | ||
7345 | /* Implicitly take a reference to a regular expression */ | |
7346 | if (first->op_type == OP_MATCH) { | |
7347 | first->op_type = OP_QR; | |
7348 | first->op_ppaddr = PL_ppaddr[OP_QR]; | |
7349 | } | |
7350 | if (second->op_type == OP_MATCH) { | |
7351 | second->op_type = OP_QR; | |
7352 | second->op_ppaddr = PL_ppaddr[OP_QR]; | |
7353 | } | |
7354 | } | |
7355 | ||
7356 | return o; | |
7357 | } | |
7358 | ||
7359 | ||
7360 | OP * | |
b162f9ea IZ |
7361 | Perl_ck_sassign(pTHX_ OP *o) |
7362 | { | |
3088bf26 | 7363 | dVAR; |
1496a290 | 7364 | OP * const kid = cLISTOPo->op_first; |
7918f24d NC |
7365 | |
7366 | PERL_ARGS_ASSERT_CK_SASSIGN; | |
7367 | ||
b162f9ea IZ |
7368 | /* has a disposable target? */ |
7369 | if ((PL_opargs[kid->op_type] & OA_TARGLEX) | |
6b66af17 GS |
7370 | && !(kid->op_flags & OPf_STACKED) |
7371 | /* Cannot steal the second time! */ | |
1b438339 GG |
7372 | && !(kid->op_private & OPpTARGET_MY) |
7373 | /* Keep the full thing for madskills */ | |
7374 | && !PL_madskills | |
7375 | ) | |
b162f9ea | 7376 | { |
551405c4 | 7377 | OP * const kkid = kid->op_sibling; |
b162f9ea IZ |
7378 | |
7379 | /* Can just relocate the target. */ | |
2c2d71f5 JH |
7380 | if (kkid && kkid->op_type == OP_PADSV |
7381 | && !(kkid->op_private & OPpLVAL_INTRO)) | |
7382 | { | |
b162f9ea | 7383 | kid->op_targ = kkid->op_targ; |
743e66e6 | 7384 | kkid->op_targ = 0; |
b162f9ea IZ |
7385 | /* Now we do not need PADSV and SASSIGN. */ |
7386 | kid->op_sibling = o->op_sibling; /* NULL */ | |
7387 | cLISTOPo->op_first = NULL; | |
7388 | op_free(o); | |
7389 | op_free(kkid); | |
7390 | kid->op_private |= OPpTARGET_MY; /* Used for context settings */ | |
7391 | return kid; | |
7392 | } | |
7393 | } | |
c5917253 NC |
7394 | if (kid->op_sibling) { |
7395 | OP *kkid = kid->op_sibling; | |
7396 | if (kkid->op_type == OP_PADSV | |
7397 | && (kkid->op_private & OPpLVAL_INTRO) | |
7398 | && SvPAD_STATE(*av_fetch(PL_comppad_name, kkid->op_targ, FALSE))) { | |
7399 | const PADOFFSET target = kkid->op_targ; | |
7400 | OP *const other = newOP(OP_PADSV, | |
7401 | kkid->op_flags | |
7402 | | ((kkid->op_private & ~OPpLVAL_INTRO) << 8)); | |
7403 | OP *const first = newOP(OP_NULL, 0); | |
7404 | OP *const nullop = newCONDOP(0, first, o, other); | |
7405 | OP *const condop = first->op_next; | |
7406 | /* hijacking PADSTALE for uninitialized state variables */ | |
7407 | SvPADSTALE_on(PAD_SVl(target)); | |
7408 | ||
7409 | condop->op_type = OP_ONCE; | |
7410 | condop->op_ppaddr = PL_ppaddr[OP_ONCE]; | |
7411 | condop->op_targ = target; | |
7412 | other->op_targ = target; | |
7413 | ||
95562366 NC |
7414 | /* Because we change the type of the op here, we will skip the |
7415 | assinment binop->op_last = binop->op_first->op_sibling; at the | |
7416 | end of Perl_newBINOP(). So need to do it here. */ | |
7417 | cBINOPo->op_last = cBINOPo->op_first->op_sibling; | |
7418 | ||
c5917253 NC |
7419 | return nullop; |
7420 | } | |
7421 | } | |
b162f9ea IZ |
7422 | return o; |
7423 | } | |
7424 | ||
7425 | OP * | |
cea2e8a9 | 7426 | Perl_ck_match(pTHX_ OP *o) |
79072805 | 7427 | { |
97aff369 | 7428 | dVAR; |
7918f24d NC |
7429 | |
7430 | PERL_ARGS_ASSERT_CK_MATCH; | |
7431 | ||
0d863452 | 7432 | if (o->op_type != OP_QR && PL_compcv) { |
9f7d9405 | 7433 | const PADOFFSET offset = pad_findmy("$_"); |
00b1698f | 7434 | if (offset != NOT_IN_PAD && !(PAD_COMPNAME_FLAGS_isOUR(offset))) { |
59f00321 RGS |
7435 | o->op_targ = offset; |
7436 | o->op_private |= OPpTARGET_MY; | |
7437 | } | |
7438 | } | |
7439 | if (o->op_type == OP_MATCH || o->op_type == OP_QR) | |
7440 | o->op_private |= OPpRUNTIME; | |
11343788 | 7441 | return o; |
79072805 LW |
7442 | } |
7443 | ||
7444 | OP * | |
f5d5a27c CS |
7445 | Perl_ck_method(pTHX_ OP *o) |
7446 | { | |
551405c4 | 7447 | OP * const kid = cUNOPo->op_first; |
7918f24d NC |
7448 | |
7449 | PERL_ARGS_ASSERT_CK_METHOD; | |
7450 | ||
f5d5a27c CS |
7451 | if (kid->op_type == OP_CONST) { |
7452 | SV* sv = kSVOP->op_sv; | |
a4fc7abc AL |
7453 | const char * const method = SvPVX_const(sv); |
7454 | if (!(strchr(method, ':') || strchr(method, '\''))) { | |
f5d5a27c | 7455 | OP *cmop; |
1c846c1f | 7456 | if (!SvREADONLY(sv) || !SvFAKE(sv)) { |
a4fc7abc | 7457 | sv = newSVpvn_share(method, SvCUR(sv), 0); |
1c846c1f NIS |
7458 | } |
7459 | else { | |
a0714e2c | 7460 | kSVOP->op_sv = NULL; |
1c846c1f | 7461 | } |
f5d5a27c | 7462 | cmop = newSVOP(OP_METHOD_NAMED, 0, sv); |
eb8433b7 NC |
7463 | #ifdef PERL_MAD |
7464 | op_getmad(o,cmop,'O'); | |
7465 | #else | |
f5d5a27c | 7466 | op_free(o); |
eb8433b7 | 7467 | #endif |
f5d5a27c CS |
7468 | return cmop; |
7469 | } | |
7470 | } | |
7471 | return o; | |
7472 | } | |
7473 | ||
7474 | OP * | |
cea2e8a9 | 7475 | Perl_ck_null(pTHX_ OP *o) |
79072805 | 7476 | { |
7918f24d | 7477 | PERL_ARGS_ASSERT_CK_NULL; |
96a5add6 | 7478 | PERL_UNUSED_CONTEXT; |
11343788 | 7479 | return o; |
79072805 LW |
7480 | } |
7481 | ||
7482 | OP * | |
16fe6d59 GS |
7483 | Perl_ck_open(pTHX_ OP *o) |
7484 | { | |
97aff369 | 7485 | dVAR; |
551405c4 | 7486 | HV * const table = GvHV(PL_hintgv); |
7918f24d NC |
7487 | |
7488 | PERL_ARGS_ASSERT_CK_OPEN; | |
7489 | ||
16fe6d59 | 7490 | if (table) { |
a4fc7abc | 7491 | SV **svp = hv_fetchs(table, "open_IN", FALSE); |
16fe6d59 | 7492 | if (svp && *svp) { |
a79b25b7 VP |
7493 | STRLEN len = 0; |
7494 | const char *d = SvPV_const(*svp, len); | |
7495 | const I32 mode = mode_from_discipline(d, len); | |
16fe6d59 GS |
7496 | if (mode & O_BINARY) |
7497 | o->op_private |= OPpOPEN_IN_RAW; | |
7498 | else if (mode & O_TEXT) | |
7499 | o->op_private |= OPpOPEN_IN_CRLF; | |
7500 | } | |
7501 | ||
a4fc7abc | 7502 | svp = hv_fetchs(table, "open_OUT", FALSE); |
16fe6d59 | 7503 | if (svp && *svp) { |
a79b25b7 VP |
7504 | STRLEN len = 0; |
7505 | const char *d = SvPV_const(*svp, len); | |
7506 | const I32 mode = mode_from_discipline(d, len); | |
16fe6d59 GS |
7507 | if (mode & O_BINARY) |
7508 | o->op_private |= OPpOPEN_OUT_RAW; | |
7509 | else if (mode & O_TEXT) | |
7510 | o->op_private |= OPpOPEN_OUT_CRLF; | |
7511 | } | |
7512 | } | |
8d7403e6 RGS |
7513 | if (o->op_type == OP_BACKTICK) { |
7514 | if (!(o->op_flags & OPf_KIDS)) { | |
e4b7ebf3 RGS |
7515 | OP * const newop = newUNOP(OP_BACKTICK, 0, newDEFSVOP()); |
7516 | #ifdef PERL_MAD | |
7517 | op_getmad(o,newop,'O'); | |
7518 | #else | |
8d7403e6 | 7519 | op_free(o); |
e4b7ebf3 RGS |
7520 | #endif |
7521 | return newop; | |
8d7403e6 | 7522 | } |
16fe6d59 | 7523 | return o; |
8d7403e6 | 7524 | } |
3b82e551 JH |
7525 | { |
7526 | /* In case of three-arg dup open remove strictness | |
7527 | * from the last arg if it is a bareword. */ | |
551405c4 AL |
7528 | OP * const first = cLISTOPx(o)->op_first; /* The pushmark. */ |
7529 | OP * const last = cLISTOPx(o)->op_last; /* The bareword. */ | |
3b82e551 | 7530 | OP *oa; |
b15aece3 | 7531 | const char *mode; |
3b82e551 JH |
7532 | |
7533 | if ((last->op_type == OP_CONST) && /* The bareword. */ | |
7534 | (last->op_private & OPpCONST_BARE) && | |
7535 | (last->op_private & OPpCONST_STRICT) && | |
7536 | (oa = first->op_sibling) && /* The fh. */ | |
7537 | (oa = oa->op_sibling) && /* The mode. */ | |
ea1d064a | 7538 | (oa->op_type == OP_CONST) && |
3b82e551 | 7539 | SvPOK(((SVOP*)oa)->op_sv) && |
b15aece3 | 7540 | (mode = SvPVX_const(((SVOP*)oa)->op_sv)) && |
3b82e551 JH |
7541 | mode[0] == '>' && mode[1] == '&' && /* A dup open. */ |
7542 | (last == oa->op_sibling)) /* The bareword. */ | |
7543 | last->op_private &= ~OPpCONST_STRICT; | |
7544 | } | |
16fe6d59 GS |
7545 | return ck_fun(o); |
7546 | } | |
7547 | ||
7548 | OP * | |
cea2e8a9 | 7549 | Perl_ck_repeat(pTHX_ OP *o) |
79072805 | 7550 | { |
7918f24d NC |
7551 | PERL_ARGS_ASSERT_CK_REPEAT; |
7552 | ||
11343788 MB |
7553 | if (cBINOPo->op_first->op_flags & OPf_PARENS) { |
7554 | o->op_private |= OPpREPEAT_DOLIST; | |
7555 | cBINOPo->op_first = force_list(cBINOPo->op_first); | |
79072805 LW |
7556 | } |
7557 | else | |
11343788 MB |
7558 | scalar(o); |
7559 | return o; | |
79072805 LW |
7560 | } |
7561 | ||
7562 | OP * | |
cea2e8a9 | 7563 | Perl_ck_require(pTHX_ OP *o) |
8990e307 | 7564 | { |
97aff369 | 7565 | dVAR; |
a0714e2c | 7566 | GV* gv = NULL; |
ec4ab249 | 7567 | |
7918f24d NC |
7568 | PERL_ARGS_ASSERT_CK_REQUIRE; |
7569 | ||
11343788 | 7570 | if (o->op_flags & OPf_KIDS) { /* Shall we supply missing .pm? */ |
551405c4 | 7571 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
8990e307 LW |
7572 | |
7573 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
551405c4 | 7574 | SV * const sv = kid->op_sv; |
5c144d81 | 7575 | U32 was_readonly = SvREADONLY(sv); |
8990e307 | 7576 | char *s; |
cfff9797 NC |
7577 | STRLEN len; |
7578 | const char *end; | |
5c144d81 NC |
7579 | |
7580 | if (was_readonly) { | |
7581 | if (SvFAKE(sv)) { | |
7582 | sv_force_normal_flags(sv, 0); | |
7583 | assert(!SvREADONLY(sv)); | |
7584 | was_readonly = 0; | |
7585 | } else { | |
7586 | SvREADONLY_off(sv); | |
7587 | } | |
7588 | } | |
7589 | ||
cfff9797 NC |
7590 | s = SvPVX(sv); |
7591 | len = SvCUR(sv); | |
7592 | end = s + len; | |
7593 | for (; s < end; s++) { | |
a0d0e21e LW |
7594 | if (*s == ':' && s[1] == ':') { |
7595 | *s = '/'; | |
5c6b2528 | 7596 | Move(s+2, s+1, end - s - 1, char); |
cfff9797 | 7597 | --end; |
a0d0e21e | 7598 | } |
8990e307 | 7599 | } |
cfff9797 | 7600 | SvEND_set(sv, end); |
396482e1 | 7601 | sv_catpvs(sv, ".pm"); |
5c144d81 | 7602 | SvFLAGS(sv) |= was_readonly; |
8990e307 LW |
7603 | } |
7604 | } | |
ec4ab249 | 7605 | |
a72a1c8b RGS |
7606 | if (!(o->op_flags & OPf_SPECIAL)) { /* Wasn't written as CORE::require */ |
7607 | /* handle override, if any */ | |
fafc274c | 7608 | gv = gv_fetchpvs("require", GV_NOTQUAL, SVt_PVCV); |
d6a985f2 | 7609 | if (!(gv && GvCVu(gv) && GvIMPORTED_CV(gv))) { |
a4fc7abc | 7610 | GV * const * const gvp = (GV**)hv_fetchs(PL_globalstash, "require", FALSE); |
a0714e2c | 7611 | gv = gvp ? *gvp : NULL; |
d6a985f2 | 7612 | } |
a72a1c8b | 7613 | } |
ec4ab249 | 7614 | |
b9f751c0 | 7615 | if (gv && GvCVu(gv) && GvIMPORTED_CV(gv)) { |
551405c4 | 7616 | OP * const kid = cUNOPo->op_first; |
f11453cb NC |
7617 | OP * newop; |
7618 | ||
ec4ab249 | 7619 | cUNOPo->op_first = 0; |
f11453cb | 7620 | #ifndef PERL_MAD |
ec4ab249 | 7621 | op_free(o); |
eb8433b7 | 7622 | #endif |
f11453cb NC |
7623 | newop = ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, |
7624 | append_elem(OP_LIST, kid, | |
7625 | scalar(newUNOP(OP_RV2CV, 0, | |
7626 | newGVOP(OP_GV, 0, | |
7627 | gv)))))); | |
7628 | op_getmad(o,newop,'O'); | |
eb8433b7 | 7629 | return newop; |
ec4ab249 GA |
7630 | } |
7631 | ||
11343788 | 7632 | return ck_fun(o); |
8990e307 LW |
7633 | } |
7634 | ||
78f9721b SM |
7635 | OP * |
7636 | Perl_ck_return(pTHX_ OP *o) | |
7637 | { | |
97aff369 | 7638 | dVAR; |
e91684bf | 7639 | OP *kid; |
7918f24d NC |
7640 | |
7641 | PERL_ARGS_ASSERT_CK_RETURN; | |
7642 | ||
e91684bf | 7643 | kid = cLISTOPo->op_first->op_sibling; |
78f9721b | 7644 | if (CvLVALUE(PL_compcv)) { |
e91684bf | 7645 | for (; kid; kid = kid->op_sibling) |
78f9721b | 7646 | mod(kid, OP_LEAVESUBLV); |
e91684bf VP |
7647 | } else { |
7648 | for (; kid; kid = kid->op_sibling) | |
7649 | if ((kid->op_type == OP_NULL) | |
1c8a4223 | 7650 | && ((kid->op_flags & (OPf_SPECIAL|OPf_KIDS)) == (OPf_SPECIAL|OPf_KIDS))) { |
e91684bf | 7651 | /* This is a do block */ |
1c8a4223 VP |
7652 | OP *op = kUNOP->op_first; |
7653 | if (op->op_type == OP_LEAVE && op->op_flags & OPf_KIDS) { | |
7654 | op = cUNOPx(op)->op_first; | |
7655 | assert(op->op_type == OP_ENTER && !(op->op_flags & OPf_SPECIAL)); | |
7656 | /* Force the use of the caller's context */ | |
7657 | op->op_flags |= OPf_SPECIAL; | |
7658 | } | |
e91684bf | 7659 | } |
78f9721b | 7660 | } |
e91684bf | 7661 | |
78f9721b SM |
7662 | return o; |
7663 | } | |
7664 | ||
79072805 | 7665 | OP * |
cea2e8a9 | 7666 | Perl_ck_select(pTHX_ OP *o) |
79072805 | 7667 | { |
27da23d5 | 7668 | dVAR; |
c07a80fd | 7669 | OP* kid; |
7918f24d NC |
7670 | |
7671 | PERL_ARGS_ASSERT_CK_SELECT; | |
7672 | ||
11343788 MB |
7673 | if (o->op_flags & OPf_KIDS) { |
7674 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
2304df62 | 7675 | if (kid && kid->op_sibling) { |
11343788 | 7676 | o->op_type = OP_SSELECT; |
22c35a8c | 7677 | o->op_ppaddr = PL_ppaddr[OP_SSELECT]; |
11343788 MB |
7678 | o = ck_fun(o); |
7679 | return fold_constants(o); | |
79072805 LW |
7680 | } |
7681 | } | |
11343788 MB |
7682 | o = ck_fun(o); |
7683 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
c07a80fd | 7684 | if (kid && kid->op_type == OP_RV2GV) |
7685 | kid->op_private &= ~HINT_STRICT_REFS; | |
11343788 | 7686 | return o; |
79072805 LW |
7687 | } |
7688 | ||
7689 | OP * | |
cea2e8a9 | 7690 | Perl_ck_shift(pTHX_ OP *o) |
79072805 | 7691 | { |
97aff369 | 7692 | dVAR; |
6867be6d | 7693 | const I32 type = o->op_type; |
79072805 | 7694 | |
7918f24d NC |
7695 | PERL_ARGS_ASSERT_CK_SHIFT; |
7696 | ||
11343788 | 7697 | if (!(o->op_flags & OPf_KIDS)) { |
6d4ff0d2 | 7698 | OP *argop; |
eb8433b7 NC |
7699 | /* FIXME - this can be refactored to reduce code in #ifdefs */ |
7700 | #ifdef PERL_MAD | |
1d866c12 | 7701 | OP * const oldo = o; |
eb8433b7 | 7702 | #else |
11343788 | 7703 | op_free(o); |
eb8433b7 | 7704 | #endif |
6d4ff0d2 | 7705 | argop = newUNOP(OP_RV2AV, 0, |
8fde6460 | 7706 | scalar(newGVOP(OP_GV, 0, CvUNIQUE(PL_compcv) ? PL_argvgv : PL_defgv))); |
eb8433b7 NC |
7707 | #ifdef PERL_MAD |
7708 | o = newUNOP(type, 0, scalar(argop)); | |
7709 | op_getmad(oldo,o,'O'); | |
7710 | return o; | |
7711 | #else | |
6d4ff0d2 | 7712 | return newUNOP(type, 0, scalar(argop)); |
eb8433b7 | 7713 | #endif |
79072805 | 7714 | } |
11343788 | 7715 | return scalar(modkids(ck_fun(o), type)); |
79072805 LW |
7716 | } |
7717 | ||
7718 | OP * | |
cea2e8a9 | 7719 | Perl_ck_sort(pTHX_ OP *o) |
79072805 | 7720 | { |
97aff369 | 7721 | dVAR; |
8e3f9bdf | 7722 | OP *firstkid; |
bbce6d69 | 7723 | |
7918f24d NC |
7724 | PERL_ARGS_ASSERT_CK_SORT; |
7725 | ||
1496a290 | 7726 | if (o->op_type == OP_SORT && (PL_hints & HINT_LOCALIZE_HH) != 0) { |
a4fc7abc | 7727 | HV * const hinthv = GvHV(PL_hintgv); |
7b9ef140 | 7728 | if (hinthv) { |
a4fc7abc | 7729 | SV ** const svp = hv_fetchs(hinthv, "sort", FALSE); |
7b9ef140 | 7730 | if (svp) { |
a4fc7abc | 7731 | const I32 sorthints = (I32)SvIV(*svp); |
7b9ef140 RH |
7732 | if ((sorthints & HINT_SORT_QUICKSORT) != 0) |
7733 | o->op_private |= OPpSORT_QSORT; | |
7734 | if ((sorthints & HINT_SORT_STABLE) != 0) | |
7735 | o->op_private |= OPpSORT_STABLE; | |
7736 | } | |
7737 | } | |
7738 | } | |
7739 | ||
9ea6e965 | 7740 | if (o->op_type == OP_SORT && o->op_flags & OPf_STACKED) |
51a19bc0 | 7741 | simplify_sort(o); |
8e3f9bdf GS |
7742 | firstkid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
7743 | if (o->op_flags & OPf_STACKED) { /* may have been cleared */ | |
9c5ffd7c | 7744 | OP *k = NULL; |
8e3f9bdf | 7745 | OP *kid = cUNOPx(firstkid)->op_first; /* get past null */ |
79072805 | 7746 | |
463ee0b2 | 7747 | if (kid->op_type == OP_SCOPE || kid->op_type == OP_LEAVE) { |
79072805 | 7748 | linklist(kid); |
463ee0b2 LW |
7749 | if (kid->op_type == OP_SCOPE) { |
7750 | k = kid->op_next; | |
7751 | kid->op_next = 0; | |
79072805 | 7752 | } |
463ee0b2 | 7753 | else if (kid->op_type == OP_LEAVE) { |
11343788 | 7754 | if (o->op_type == OP_SORT) { |
93c66552 | 7755 | op_null(kid); /* wipe out leave */ |
748a9306 | 7756 | kid->op_next = kid; |
463ee0b2 | 7757 | |
748a9306 LW |
7758 | for (k = kLISTOP->op_first->op_next; k; k = k->op_next) { |
7759 | if (k->op_next == kid) | |
7760 | k->op_next = 0; | |
71a29c3c GS |
7761 | /* don't descend into loops */ |
7762 | else if (k->op_type == OP_ENTERLOOP | |
7763 | || k->op_type == OP_ENTERITER) | |
7764 | { | |
7765 | k = cLOOPx(k)->op_lastop; | |
7766 | } | |
748a9306 | 7767 | } |
463ee0b2 | 7768 | } |
748a9306 LW |
7769 | else |
7770 | kid->op_next = 0; /* just disconnect the leave */ | |
a0d0e21e | 7771 | k = kLISTOP->op_first; |
463ee0b2 | 7772 | } |
a2efc822 | 7773 | CALL_PEEP(k); |
a0d0e21e | 7774 | |
8e3f9bdf GS |
7775 | kid = firstkid; |
7776 | if (o->op_type == OP_SORT) { | |
7777 | /* provide scalar context for comparison function/block */ | |
7778 | kid = scalar(kid); | |
a0d0e21e | 7779 | kid->op_next = kid; |
8e3f9bdf | 7780 | } |
a0d0e21e LW |
7781 | else |
7782 | kid->op_next = k; | |
11343788 | 7783 | o->op_flags |= OPf_SPECIAL; |
79072805 | 7784 | } |
c6e96bcb | 7785 | else if (kid->op_type == OP_RV2SV || kid->op_type == OP_PADSV) |
93c66552 | 7786 | op_null(firstkid); |
8e3f9bdf GS |
7787 | |
7788 | firstkid = firstkid->op_sibling; | |
79072805 | 7789 | } |
bbce6d69 | 7790 | |
8e3f9bdf GS |
7791 | /* provide list context for arguments */ |
7792 | if (o->op_type == OP_SORT) | |
7793 | list(firstkid); | |
7794 | ||
11343788 | 7795 | return o; |
79072805 | 7796 | } |
bda4119b GS |
7797 | |
7798 | STATIC void | |
cea2e8a9 | 7799 | S_simplify_sort(pTHX_ OP *o) |
9c007264 | 7800 | { |
97aff369 | 7801 | dVAR; |
9c007264 JH |
7802 | register OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
7803 | OP *k; | |
eb209983 | 7804 | int descending; |
350de78d | 7805 | GV *gv; |
770526c1 | 7806 | const char *gvname; |
7918f24d NC |
7807 | |
7808 | PERL_ARGS_ASSERT_SIMPLIFY_SORT; | |
7809 | ||
9c007264 JH |
7810 | if (!(o->op_flags & OPf_STACKED)) |
7811 | return; | |
fafc274c NC |
7812 | GvMULTI_on(gv_fetchpvs("a", GV_ADD|GV_NOTQUAL, SVt_PV)); |
7813 | GvMULTI_on(gv_fetchpvs("b", GV_ADD|GV_NOTQUAL, SVt_PV)); | |
82092f1d | 7814 | kid = kUNOP->op_first; /* get past null */ |
9c007264 JH |
7815 | if (kid->op_type != OP_SCOPE) |
7816 | return; | |
7817 | kid = kLISTOP->op_last; /* get past scope */ | |
7818 | switch(kid->op_type) { | |
7819 | case OP_NCMP: | |
7820 | case OP_I_NCMP: | |
7821 | case OP_SCMP: | |
7822 | break; | |
7823 | default: | |
7824 | return; | |
7825 | } | |
7826 | k = kid; /* remember this node*/ | |
7827 | if (kBINOP->op_first->op_type != OP_RV2SV) | |
7828 | return; | |
7829 | kid = kBINOP->op_first; /* get past cmp */ | |
7830 | if (kUNOP->op_first->op_type != OP_GV) | |
7831 | return; | |
7832 | kid = kUNOP->op_first; /* get past rv2sv */ | |
638eceb6 | 7833 | gv = kGVOP_gv; |
350de78d | 7834 | if (GvSTASH(gv) != PL_curstash) |
9c007264 | 7835 | return; |
770526c1 NC |
7836 | gvname = GvNAME(gv); |
7837 | if (*gvname == 'a' && gvname[1] == '\0') | |
eb209983 | 7838 | descending = 0; |
770526c1 | 7839 | else if (*gvname == 'b' && gvname[1] == '\0') |
eb209983 | 7840 | descending = 1; |
9c007264 JH |
7841 | else |
7842 | return; | |
eb209983 | 7843 | |
9c007264 JH |
7844 | kid = k; /* back to cmp */ |
7845 | if (kBINOP->op_last->op_type != OP_RV2SV) | |
7846 | return; | |
7847 | kid = kBINOP->op_last; /* down to 2nd arg */ | |
7848 | if (kUNOP->op_first->op_type != OP_GV) | |
7849 | return; | |
7850 | kid = kUNOP->op_first; /* get past rv2sv */ | |
638eceb6 | 7851 | gv = kGVOP_gv; |
770526c1 NC |
7852 | if (GvSTASH(gv) != PL_curstash) |
7853 | return; | |
7854 | gvname = GvNAME(gv); | |
7855 | if ( descending | |
7856 | ? !(*gvname == 'a' && gvname[1] == '\0') | |
7857 | : !(*gvname == 'b' && gvname[1] == '\0')) | |
9c007264 JH |
7858 | return; |
7859 | o->op_flags &= ~(OPf_STACKED | OPf_SPECIAL); | |
eb209983 NC |
7860 | if (descending) |
7861 | o->op_private |= OPpSORT_DESCEND; | |
9c007264 JH |
7862 | if (k->op_type == OP_NCMP) |
7863 | o->op_private |= OPpSORT_NUMERIC; | |
7864 | if (k->op_type == OP_I_NCMP) | |
7865 | o->op_private |= OPpSORT_NUMERIC | OPpSORT_INTEGER; | |
e507f050 SM |
7866 | kid = cLISTOPo->op_first->op_sibling; |
7867 | cLISTOPo->op_first->op_sibling = kid->op_sibling; /* bypass old block */ | |
eb8433b7 NC |
7868 | #ifdef PERL_MAD |
7869 | op_getmad(kid,o,'S'); /* then delete it */ | |
7870 | #else | |
e507f050 | 7871 | op_free(kid); /* then delete it */ |
eb8433b7 | 7872 | #endif |
9c007264 | 7873 | } |
79072805 LW |
7874 | |
7875 | OP * | |
cea2e8a9 | 7876 | Perl_ck_split(pTHX_ OP *o) |
79072805 | 7877 | { |
27da23d5 | 7878 | dVAR; |
79072805 | 7879 | register OP *kid; |
aeea060c | 7880 | |
7918f24d NC |
7881 | PERL_ARGS_ASSERT_CK_SPLIT; |
7882 | ||
11343788 MB |
7883 | if (o->op_flags & OPf_STACKED) |
7884 | return no_fh_allowed(o); | |
79072805 | 7885 | |
11343788 | 7886 | kid = cLISTOPo->op_first; |
8990e307 | 7887 | if (kid->op_type != OP_NULL) |
cea2e8a9 | 7888 | Perl_croak(aTHX_ "panic: ck_split"); |
8990e307 | 7889 | kid = kid->op_sibling; |
11343788 MB |
7890 | op_free(cLISTOPo->op_first); |
7891 | cLISTOPo->op_first = kid; | |
85e6fe83 | 7892 | if (!kid) { |
396482e1 | 7893 | cLISTOPo->op_first = kid = newSVOP(OP_CONST, 0, newSVpvs(" ")); |
11343788 | 7894 | cLISTOPo->op_last = kid; /* There was only one element previously */ |
85e6fe83 | 7895 | } |
79072805 | 7896 | |
de4bf5b3 | 7897 | if (kid->op_type != OP_MATCH || kid->op_flags & OPf_STACKED) { |
551405c4 | 7898 | OP * const sibl = kid->op_sibling; |
463ee0b2 | 7899 | kid->op_sibling = 0; |
131b3ad0 | 7900 | kid = pmruntime( newPMOP(OP_MATCH, OPf_SPECIAL), kid, 0); |
11343788 MB |
7901 | if (cLISTOPo->op_first == cLISTOPo->op_last) |
7902 | cLISTOPo->op_last = kid; | |
7903 | cLISTOPo->op_first = kid; | |
79072805 LW |
7904 | kid->op_sibling = sibl; |
7905 | } | |
7906 | ||
7907 | kid->op_type = OP_PUSHRE; | |
22c35a8c | 7908 | kid->op_ppaddr = PL_ppaddr[OP_PUSHRE]; |
79072805 | 7909 | scalar(kid); |
041457d9 | 7910 | if (((PMOP *)kid)->op_pmflags & PMf_GLOBAL && ckWARN(WARN_REGEXP)) { |
f34840d8 MJD |
7911 | Perl_warner(aTHX_ packWARN(WARN_REGEXP), |
7912 | "Use of /g modifier is meaningless in split"); | |
7913 | } | |
79072805 LW |
7914 | |
7915 | if (!kid->op_sibling) | |
54b9620d | 7916 | append_elem(OP_SPLIT, o, newDEFSVOP()); |
79072805 LW |
7917 | |
7918 | kid = kid->op_sibling; | |
7919 | scalar(kid); | |
7920 | ||
7921 | if (!kid->op_sibling) | |
11343788 | 7922 | append_elem(OP_SPLIT, o, newSVOP(OP_CONST, 0, newSViv(0))); |
ce3e5c45 | 7923 | assert(kid->op_sibling); |
79072805 LW |
7924 | |
7925 | kid = kid->op_sibling; | |
7926 | scalar(kid); | |
7927 | ||
7928 | if (kid->op_sibling) | |
53e06cf0 | 7929 | return too_many_arguments(o,OP_DESC(o)); |
79072805 | 7930 | |
11343788 | 7931 | return o; |
79072805 LW |
7932 | } |
7933 | ||
7934 | OP * | |
1c846c1f | 7935 | Perl_ck_join(pTHX_ OP *o) |
eb6e2d6f | 7936 | { |
551405c4 | 7937 | const OP * const kid = cLISTOPo->op_first->op_sibling; |
7918f24d NC |
7938 | |
7939 | PERL_ARGS_ASSERT_CK_JOIN; | |
7940 | ||
041457d9 DM |
7941 | if (kid && kid->op_type == OP_MATCH) { |
7942 | if (ckWARN(WARN_SYNTAX)) { | |
6867be6d | 7943 | const REGEXP *re = PM_GETRE(kPMOP); |
d2c6dc5e | 7944 | const char *pmstr = re ? RX_PRECOMP_const(re) : "STRING"; |
220fc49f | 7945 | const STRLEN len = re ? RX_PRELEN(re) : 6; |
9014280d | 7946 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
bcdf7404 | 7947 | "/%.*s/ should probably be written as \"%.*s\"", |
d83b45b8 | 7948 | (int)len, pmstr, (int)len, pmstr); |
eb6e2d6f GS |
7949 | } |
7950 | } | |
7951 | return ck_fun(o); | |
7952 | } | |
7953 | ||
7954 | OP * | |
cea2e8a9 | 7955 | Perl_ck_subr(pTHX_ OP *o) |
79072805 | 7956 | { |
97aff369 | 7957 | dVAR; |
11343788 MB |
7958 | OP *prev = ((cUNOPo->op_first->op_sibling) |
7959 | ? cUNOPo : ((UNOP*)cUNOPo->op_first))->op_first; | |
7960 | OP *o2 = prev->op_sibling; | |
4633a7c4 | 7961 | OP *cvop; |
a0751766 | 7962 | const char *proto = NULL; |
cbf82dd0 | 7963 | const char *proto_end = NULL; |
c445ea15 AL |
7964 | CV *cv = NULL; |
7965 | GV *namegv = NULL; | |
4633a7c4 LW |
7966 | int optional = 0; |
7967 | I32 arg = 0; | |
5b794e05 | 7968 | I32 contextclass = 0; |
d3fcec1f | 7969 | const char *e = NULL; |
0723351e | 7970 | bool delete_op = 0; |
4633a7c4 | 7971 | |
7918f24d NC |
7972 | PERL_ARGS_ASSERT_CK_SUBR; |
7973 | ||
d3011074 | 7974 | o->op_private |= OPpENTERSUB_HASTARG; |
11343788 | 7975 | for (cvop = o2; cvop->op_sibling; cvop = cvop->op_sibling) ; |
4633a7c4 LW |
7976 | if (cvop->op_type == OP_RV2CV) { |
7977 | SVOP* tmpop; | |
11343788 | 7978 | o->op_private |= (cvop->op_private & OPpENTERSUB_AMPER); |
93c66552 | 7979 | op_null(cvop); /* disable rv2cv */ |
4633a7c4 | 7980 | tmpop = (SVOP*)((UNOP*)cvop)->op_first; |
76cd736e | 7981 | if (tmpop->op_type == OP_GV && !(o->op_private & OPpENTERSUB_AMPER)) { |
638eceb6 | 7982 | GV *gv = cGVOPx_gv(tmpop); |
350de78d | 7983 | cv = GvCVu(gv); |
76cd736e GS |
7984 | if (!cv) |
7985 | tmpop->op_private |= OPpEARLY_CV; | |
06492da6 SF |
7986 | else { |
7987 | if (SvPOK(cv)) { | |
cbf82dd0 | 7988 | STRLEN len; |
06492da6 | 7989 | namegv = CvANON(cv) ? gv : CvGV(cv); |
ad64d0ec | 7990 | proto = SvPV(MUTABLE_SV(cv), len); |
cbf82dd0 | 7991 | proto_end = proto + len; |
06492da6 | 7992 | } |
46fc3d4c | 7993 | } |
4633a7c4 LW |
7994 | } |
7995 | } | |
f5d5a27c | 7996 | else if (cvop->op_type == OP_METHOD || cvop->op_type == OP_METHOD_NAMED) { |
7a52d87a GS |
7997 | if (o2->op_type == OP_CONST) |
7998 | o2->op_private &= ~OPpCONST_STRICT; | |
58a40671 | 7999 | else if (o2->op_type == OP_LIST) { |
5f66b61c AL |
8000 | OP * const sib = ((UNOP*)o2)->op_first->op_sibling; |
8001 | if (sib && sib->op_type == OP_CONST) | |
8002 | sib->op_private &= ~OPpCONST_STRICT; | |
58a40671 | 8003 | } |
7a52d87a | 8004 | } |
3280af22 NIS |
8005 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
8006 | if (PERLDB_SUB && PL_curstash != PL_debstash) | |
11343788 MB |
8007 | o->op_private |= OPpENTERSUB_DB; |
8008 | while (o2 != cvop) { | |
eb8433b7 | 8009 | OP* o3; |
9fc012f4 GG |
8010 | if (PL_madskills && o2->op_type == OP_STUB) { |
8011 | o2 = o2->op_sibling; | |
8012 | continue; | |
8013 | } | |
eb8433b7 NC |
8014 | if (PL_madskills && o2->op_type == OP_NULL) |
8015 | o3 = ((UNOP*)o2)->op_first; | |
8016 | else | |
8017 | o3 = o2; | |
4633a7c4 | 8018 | if (proto) { |
cbf82dd0 | 8019 | if (proto >= proto_end) |
5dc0d613 | 8020 | return too_many_arguments(o, gv_ename(namegv)); |
cbf82dd0 NC |
8021 | |
8022 | switch (*proto) { | |
4633a7c4 LW |
8023 | case ';': |
8024 | optional = 1; | |
8025 | proto++; | |
8026 | continue; | |
b13fd70a | 8027 | case '_': |
f00d1d61 | 8028 | /* _ must be at the end */ |
cb40c25d | 8029 | if (proto[1] && proto[1] != ';') |
f00d1d61 | 8030 | goto oops; |
4633a7c4 LW |
8031 | case '$': |
8032 | proto++; | |
8033 | arg++; | |
11343788 | 8034 | scalar(o2); |
4633a7c4 LW |
8035 | break; |
8036 | case '%': | |
8037 | case '@': | |
11343788 | 8038 | list(o2); |
4633a7c4 LW |
8039 | arg++; |
8040 | break; | |
8041 | case '&': | |
8042 | proto++; | |
8043 | arg++; | |
eb8433b7 | 8044 | if (o3->op_type != OP_REFGEN && o3->op_type != OP_UNDEF) |
75fc29ea | 8045 | bad_type(arg, |
666ea192 JH |
8046 | arg == 1 ? "block or sub {}" : "sub {}", |
8047 | gv_ename(namegv), o3); | |
4633a7c4 LW |
8048 | break; |
8049 | case '*': | |
2ba6ecf4 | 8050 | /* '*' allows any scalar type, including bareword */ |
4633a7c4 LW |
8051 | proto++; |
8052 | arg++; | |
eb8433b7 | 8053 | if (o3->op_type == OP_RV2GV) |
2ba6ecf4 | 8054 | goto wrapref; /* autoconvert GLOB -> GLOBref */ |
eb8433b7 NC |
8055 | else if (o3->op_type == OP_CONST) |
8056 | o3->op_private &= ~OPpCONST_STRICT; | |
8057 | else if (o3->op_type == OP_ENTERSUB) { | |
9675f7ac | 8058 | /* accidental subroutine, revert to bareword */ |
eb8433b7 | 8059 | OP *gvop = ((UNOP*)o3)->op_first; |
9675f7ac GS |
8060 | if (gvop && gvop->op_type == OP_NULL) { |
8061 | gvop = ((UNOP*)gvop)->op_first; | |
8062 | if (gvop) { | |
8063 | for (; gvop->op_sibling; gvop = gvop->op_sibling) | |
8064 | ; | |
8065 | if (gvop && | |
8066 | (gvop->op_private & OPpENTERSUB_NOPAREN) && | |
8067 | (gvop = ((UNOP*)gvop)->op_first) && | |
8068 | gvop->op_type == OP_GV) | |
8069 | { | |
551405c4 AL |
8070 | GV * const gv = cGVOPx_gv(gvop); |
8071 | OP * const sibling = o2->op_sibling; | |
396482e1 | 8072 | SV * const n = newSVpvs(""); |
eb8433b7 | 8073 | #ifdef PERL_MAD |
1d866c12 | 8074 | OP * const oldo2 = o2; |
eb8433b7 | 8075 | #else |
9675f7ac | 8076 | op_free(o2); |
eb8433b7 | 8077 | #endif |
2a797ae2 | 8078 | gv_fullname4(n, gv, "", FALSE); |
2692f720 | 8079 | o2 = newSVOP(OP_CONST, 0, n); |
eb8433b7 | 8080 | op_getmad(oldo2,o2,'O'); |
9675f7ac GS |
8081 | prev->op_sibling = o2; |
8082 | o2->op_sibling = sibling; | |
8083 | } | |
8084 | } | |
8085 | } | |
8086 | } | |
2ba6ecf4 GS |
8087 | scalar(o2); |
8088 | break; | |
5b794e05 JH |
8089 | case '[': case ']': |
8090 | goto oops; | |
8091 | break; | |
4633a7c4 LW |
8092 | case '\\': |
8093 | proto++; | |
8094 | arg++; | |
5b794e05 | 8095 | again: |
4633a7c4 | 8096 | switch (*proto++) { |
5b794e05 JH |
8097 | case '[': |
8098 | if (contextclass++ == 0) { | |
841d93c8 | 8099 | e = strchr(proto, ']'); |
5b794e05 JH |
8100 | if (!e || e == proto) |
8101 | goto oops; | |
8102 | } | |
8103 | else | |
8104 | goto oops; | |
8105 | goto again; | |
8106 | break; | |
8107 | case ']': | |
466bafcd | 8108 | if (contextclass) { |
a0751766 NC |
8109 | const char *p = proto; |
8110 | const char *const end = proto; | |
466bafcd | 8111 | contextclass = 0; |
47127b64 | 8112 | while (*--p != '[') {} |
a0751766 NC |
8113 | bad_type(arg, Perl_form(aTHX_ "one of %.*s", |
8114 | (int)(end - p), p), | |
8115 | gv_ename(namegv), o3); | |
466bafcd | 8116 | } else |
5b794e05 JH |
8117 | goto oops; |
8118 | break; | |
4633a7c4 | 8119 | case '*': |
eb8433b7 | 8120 | if (o3->op_type == OP_RV2GV) |
5b794e05 JH |
8121 | goto wrapref; |
8122 | if (!contextclass) | |
eb8433b7 | 8123 | bad_type(arg, "symbol", gv_ename(namegv), o3); |
5b794e05 | 8124 | break; |
4633a7c4 | 8125 | case '&': |
eb8433b7 | 8126 | if (o3->op_type == OP_ENTERSUB) |
5b794e05 JH |
8127 | goto wrapref; |
8128 | if (!contextclass) | |
eb8433b7 NC |
8129 | bad_type(arg, "subroutine entry", gv_ename(namegv), |
8130 | o3); | |
5b794e05 | 8131 | break; |
4633a7c4 | 8132 | case '$': |
eb8433b7 NC |
8133 | if (o3->op_type == OP_RV2SV || |
8134 | o3->op_type == OP_PADSV || | |
8135 | o3->op_type == OP_HELEM || | |
5b9081af | 8136 | o3->op_type == OP_AELEM) |
5b794e05 JH |
8137 | goto wrapref; |
8138 | if (!contextclass) | |
eb8433b7 | 8139 | bad_type(arg, "scalar", gv_ename(namegv), o3); |
5b794e05 | 8140 | break; |
4633a7c4 | 8141 | case '@': |
eb8433b7 NC |
8142 | if (o3->op_type == OP_RV2AV || |
8143 | o3->op_type == OP_PADAV) | |
5b794e05 JH |
8144 | goto wrapref; |
8145 | if (!contextclass) | |
eb8433b7 | 8146 | bad_type(arg, "array", gv_ename(namegv), o3); |
5b794e05 | 8147 | break; |
4633a7c4 | 8148 | case '%': |
eb8433b7 NC |
8149 | if (o3->op_type == OP_RV2HV || |
8150 | o3->op_type == OP_PADHV) | |
5b794e05 JH |
8151 | goto wrapref; |
8152 | if (!contextclass) | |
eb8433b7 | 8153 | bad_type(arg, "hash", gv_ename(namegv), o3); |
5b794e05 JH |
8154 | break; |
8155 | wrapref: | |
4633a7c4 | 8156 | { |
551405c4 AL |
8157 | OP* const kid = o2; |
8158 | OP* const sib = kid->op_sibling; | |
4633a7c4 | 8159 | kid->op_sibling = 0; |
6fa846a0 GS |
8160 | o2 = newUNOP(OP_REFGEN, 0, kid); |
8161 | o2->op_sibling = sib; | |
e858de61 | 8162 | prev->op_sibling = o2; |
4633a7c4 | 8163 | } |
841d93c8 | 8164 | if (contextclass && e) { |
5b794e05 JH |
8165 | proto = e + 1; |
8166 | contextclass = 0; | |
8167 | } | |
4633a7c4 LW |
8168 | break; |
8169 | default: goto oops; | |
8170 | } | |
5b794e05 JH |
8171 | if (contextclass) |
8172 | goto again; | |
4633a7c4 | 8173 | break; |
b1cb66bf | 8174 | case ' ': |
8175 | proto++; | |
8176 | continue; | |
4633a7c4 LW |
8177 | default: |
8178 | oops: | |
35c1215d | 8179 | Perl_croak(aTHX_ "Malformed prototype for %s: %"SVf, |
be2597df | 8180 | gv_ename(namegv), SVfARG(cv)); |
4633a7c4 LW |
8181 | } |
8182 | } | |
8183 | else | |
11343788 MB |
8184 | list(o2); |
8185 | mod(o2, OP_ENTERSUB); | |
8186 | prev = o2; | |
8187 | o2 = o2->op_sibling; | |
551405c4 | 8188 | } /* while */ |
236b555a RGS |
8189 | if (o2 == cvop && proto && *proto == '_') { |
8190 | /* generate an access to $_ */ | |
8191 | o2 = newDEFSVOP(); | |
8192 | o2->op_sibling = prev->op_sibling; | |
8193 | prev->op_sibling = o2; /* instead of cvop */ | |
8194 | } | |
cbf82dd0 | 8195 | if (proto && !optional && proto_end > proto && |
236b555a | 8196 | (*proto != '@' && *proto != '%' && *proto != ';' && *proto != '_')) |
5dc0d613 | 8197 | return too_few_arguments(o, gv_ename(namegv)); |
0723351e | 8198 | if(delete_op) { |
eb8433b7 | 8199 | #ifdef PERL_MAD |
1d866c12 | 8200 | OP * const oldo = o; |
eb8433b7 | 8201 | #else |
06492da6 | 8202 | op_free(o); |
eb8433b7 | 8203 | #endif |
06492da6 | 8204 | o=newSVOP(OP_CONST, 0, newSViv(0)); |
eb8433b7 | 8205 | op_getmad(oldo,o,'O'); |
06492da6 | 8206 | } |
11343788 | 8207 | return o; |
79072805 LW |
8208 | } |
8209 | ||
8210 | OP * | |
cea2e8a9 | 8211 | Perl_ck_svconst(pTHX_ OP *o) |
8990e307 | 8212 | { |
7918f24d | 8213 | PERL_ARGS_ASSERT_CK_SVCONST; |
96a5add6 | 8214 | PERL_UNUSED_CONTEXT; |
11343788 MB |
8215 | SvREADONLY_on(cSVOPo->op_sv); |
8216 | return o; | |
8990e307 LW |
8217 | } |
8218 | ||
8219 | OP * | |
d4ac975e GA |
8220 | Perl_ck_chdir(pTHX_ OP *o) |
8221 | { | |
8222 | if (o->op_flags & OPf_KIDS) { | |
1496a290 | 8223 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
d4ac975e GA |
8224 | |
8225 | if (kid && kid->op_type == OP_CONST && | |
8226 | (kid->op_private & OPpCONST_BARE)) | |
8227 | { | |
8228 | o->op_flags |= OPf_SPECIAL; | |
8229 | kid->op_private &= ~OPpCONST_STRICT; | |
8230 | } | |
8231 | } | |
8232 | return ck_fun(o); | |
8233 | } | |
8234 | ||
8235 | OP * | |
cea2e8a9 | 8236 | Perl_ck_trunc(pTHX_ OP *o) |
79072805 | 8237 | { |
7918f24d NC |
8238 | PERL_ARGS_ASSERT_CK_TRUNC; |
8239 | ||
11343788 MB |
8240 | if (o->op_flags & OPf_KIDS) { |
8241 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 | 8242 | |
a0d0e21e LW |
8243 | if (kid->op_type == OP_NULL) |
8244 | kid = (SVOP*)kid->op_sibling; | |
bb53490d GS |
8245 | if (kid && kid->op_type == OP_CONST && |
8246 | (kid->op_private & OPpCONST_BARE)) | |
8247 | { | |
11343788 | 8248 | o->op_flags |= OPf_SPECIAL; |
bb53490d GS |
8249 | kid->op_private &= ~OPpCONST_STRICT; |
8250 | } | |
79072805 | 8251 | } |
11343788 | 8252 | return ck_fun(o); |
79072805 LW |
8253 | } |
8254 | ||
35fba0d9 | 8255 | OP * |
bab9c0ac RGS |
8256 | Perl_ck_unpack(pTHX_ OP *o) |
8257 | { | |
8258 | OP *kid = cLISTOPo->op_first; | |
7918f24d NC |
8259 | |
8260 | PERL_ARGS_ASSERT_CK_UNPACK; | |
8261 | ||
bab9c0ac RGS |
8262 | if (kid->op_sibling) { |
8263 | kid = kid->op_sibling; | |
8264 | if (!kid->op_sibling) | |
8265 | kid->op_sibling = newDEFSVOP(); | |
8266 | } | |
8267 | return ck_fun(o); | |
8268 | } | |
8269 | ||
8270 | OP * | |
35fba0d9 RG |
8271 | Perl_ck_substr(pTHX_ OP *o) |
8272 | { | |
7918f24d NC |
8273 | PERL_ARGS_ASSERT_CK_SUBSTR; |
8274 | ||
35fba0d9 | 8275 | o = ck_fun(o); |
1d866c12 | 8276 | if ((o->op_flags & OPf_KIDS) && (o->op_private == 4)) { |
35fba0d9 RG |
8277 | OP *kid = cLISTOPo->op_first; |
8278 | ||
8279 | if (kid->op_type == OP_NULL) | |
8280 | kid = kid->op_sibling; | |
8281 | if (kid) | |
8282 | kid->op_flags |= OPf_MOD; | |
8283 | ||
8284 | } | |
8285 | return o; | |
8286 | } | |
8287 | ||
878d132a NC |
8288 | OP * |
8289 | Perl_ck_each(pTHX_ OP *o) | |
8290 | { | |
d75c0fe7 | 8291 | dVAR; |
878d132a NC |
8292 | OP *kid = cLISTOPo->op_first; |
8293 | ||
7918f24d NC |
8294 | PERL_ARGS_ASSERT_CK_EACH; |
8295 | ||
878d132a NC |
8296 | if (kid->op_type == OP_PADAV || kid->op_type == OP_RV2AV) { |
8297 | const unsigned new_type = o->op_type == OP_EACH ? OP_AEACH | |
8298 | : o->op_type == OP_KEYS ? OP_AKEYS : OP_AVALUES; | |
8299 | o->op_type = new_type; | |
8300 | o->op_ppaddr = PL_ppaddr[new_type]; | |
8301 | } | |
8302 | else if (!(kid->op_type == OP_PADHV || kid->op_type == OP_RV2HV | |
8303 | || (kid->op_type == OP_CONST && kid->op_private & OPpCONST_BARE) | |
8304 | )) { | |
8305 | bad_type(1, "hash or array", PL_op_desc[o->op_type], kid); | |
8306 | return o; | |
8307 | } | |
8308 | return ck_fun(o); | |
8309 | } | |
8310 | ||
61b743bb DM |
8311 | /* A peephole optimizer. We visit the ops in the order they're to execute. |
8312 | * See the comments at the top of this file for more details about when | |
8313 | * peep() is called */ | |
463ee0b2 | 8314 | |
79072805 | 8315 | void |
864dbfa3 | 8316 | Perl_peep(pTHX_ register OP *o) |
79072805 | 8317 | { |
27da23d5 | 8318 | dVAR; |
c445ea15 | 8319 | register OP* oldop = NULL; |
2d8e6c8d | 8320 | |
2814eb74 | 8321 | if (!o || o->op_opt) |
79072805 | 8322 | return; |
a0d0e21e | 8323 | ENTER; |
462e5cf6 | 8324 | SAVEOP(); |
7766f137 | 8325 | SAVEVPTR(PL_curcop); |
a0d0e21e | 8326 | for (; o; o = o->op_next) { |
2814eb74 | 8327 | if (o->op_opt) |
a0d0e21e | 8328 | break; |
6d7dd4a5 NC |
8329 | /* By default, this op has now been optimised. A couple of cases below |
8330 | clear this again. */ | |
8331 | o->op_opt = 1; | |
533c011a | 8332 | PL_op = o; |
a0d0e21e LW |
8333 | switch (o->op_type) { |
8334 | case OP_NEXTSTATE: | |
8335 | case OP_DBSTATE: | |
3280af22 | 8336 | PL_curcop = ((COP*)o); /* for warnings */ |
a0d0e21e LW |
8337 | break; |
8338 | ||
a0d0e21e | 8339 | case OP_CONST: |
7a52d87a GS |
8340 | if (cSVOPo->op_private & OPpCONST_STRICT) |
8341 | no_bareword_allowed(o); | |
7766f137 | 8342 | #ifdef USE_ITHREADS |
996c9baa | 8343 | case OP_HINTSEVAL: |
3848b962 | 8344 | case OP_METHOD_NAMED: |
7766f137 GS |
8345 | /* Relocate sv to the pad for thread safety. |
8346 | * Despite being a "constant", the SV is written to, | |
8347 | * for reference counts, sv_upgrade() etc. */ | |
8348 | if (cSVOP->op_sv) { | |
6867be6d | 8349 | const PADOFFSET ix = pad_alloc(OP_CONST, SVs_PADTMP); |
996c9baa | 8350 | if (o->op_type != OP_METHOD_NAMED && SvPADTMP(cSVOPo->op_sv)) { |
6a7129a1 | 8351 | /* If op_sv is already a PADTMP then it is being used by |
9a049f1c | 8352 | * some pad, so make a copy. */ |
dd2155a4 DM |
8353 | sv_setsv(PAD_SVl(ix),cSVOPo->op_sv); |
8354 | SvREADONLY_on(PAD_SVl(ix)); | |
6a7129a1 GS |
8355 | SvREFCNT_dec(cSVOPo->op_sv); |
8356 | } | |
996c9baa | 8357 | else if (o->op_type != OP_METHOD_NAMED |
052ca17e NC |
8358 | && cSVOPo->op_sv == &PL_sv_undef) { |
8359 | /* PL_sv_undef is hack - it's unsafe to store it in the | |
8360 | AV that is the pad, because av_fetch treats values of | |
8361 | PL_sv_undef as a "free" AV entry and will merrily | |
8362 | replace them with a new SV, causing pad_alloc to think | |
8363 | that this pad slot is free. (When, clearly, it is not) | |
8364 | */ | |
8365 | SvOK_off(PAD_SVl(ix)); | |
8366 | SvPADTMP_on(PAD_SVl(ix)); | |
8367 | SvREADONLY_on(PAD_SVl(ix)); | |
8368 | } | |
6a7129a1 | 8369 | else { |
dd2155a4 | 8370 | SvREFCNT_dec(PAD_SVl(ix)); |
6a7129a1 | 8371 | SvPADTMP_on(cSVOPo->op_sv); |
dd2155a4 | 8372 | PAD_SETSV(ix, cSVOPo->op_sv); |
9a049f1c | 8373 | /* XXX I don't know how this isn't readonly already. */ |
dd2155a4 | 8374 | SvREADONLY_on(PAD_SVl(ix)); |
6a7129a1 | 8375 | } |
a0714e2c | 8376 | cSVOPo->op_sv = NULL; |
7766f137 GS |
8377 | o->op_targ = ix; |
8378 | } | |
8379 | #endif | |
07447971 GS |
8380 | break; |
8381 | ||
df91b2c5 AE |
8382 | case OP_CONCAT: |
8383 | if (o->op_next && o->op_next->op_type == OP_STRINGIFY) { | |
8384 | if (o->op_next->op_private & OPpTARGET_MY) { | |
8385 | if (o->op_flags & OPf_STACKED) /* chained concats */ | |
a6aa0b75 | 8386 | break; /* ignore_optimization */ |
df91b2c5 AE |
8387 | else { |
8388 | /* assert(PL_opargs[o->op_type] & OA_TARGLEX); */ | |
8389 | o->op_targ = o->op_next->op_targ; | |
8390 | o->op_next->op_targ = 0; | |
8391 | o->op_private |= OPpTARGET_MY; | |
8392 | } | |
8393 | } | |
8394 | op_null(o->op_next); | |
8395 | } | |
df91b2c5 | 8396 | break; |
6d7dd4a5 NC |
8397 | case OP_STUB: |
8398 | if ((o->op_flags & OPf_WANT) != OPf_WANT_LIST) { | |
8399 | break; /* Scalar stub must produce undef. List stub is noop */ | |
8400 | } | |
8401 | goto nothin; | |
79072805 | 8402 | case OP_NULL: |
acb36ea4 | 8403 | if (o->op_targ == OP_NEXTSTATE |
5edb5b2a | 8404 | || o->op_targ == OP_DBSTATE) |
acb36ea4 | 8405 | { |
3280af22 | 8406 | PL_curcop = ((COP*)o); |
acb36ea4 | 8407 | } |
dad75012 AMS |
8408 | /* XXX: We avoid setting op_seq here to prevent later calls |
8409 | to peep() from mistakenly concluding that optimisation | |
8410 | has already occurred. This doesn't fix the real problem, | |
8411 | though (See 20010220.007). AMS 20010719 */ | |
2814eb74 | 8412 | /* op_seq functionality is now replaced by op_opt */ |
6d7dd4a5 | 8413 | o->op_opt = 0; |
f46f2f82 | 8414 | /* FALL THROUGH */ |
79072805 | 8415 | case OP_SCALAR: |
93a17b20 | 8416 | case OP_LINESEQ: |
463ee0b2 | 8417 | case OP_SCOPE: |
6d7dd4a5 | 8418 | nothin: |
a0d0e21e LW |
8419 | if (oldop && o->op_next) { |
8420 | oldop->op_next = o->op_next; | |
6d7dd4a5 | 8421 | o->op_opt = 0; |
79072805 LW |
8422 | continue; |
8423 | } | |
79072805 LW |
8424 | break; |
8425 | ||
6a077020 | 8426 | case OP_PADAV: |
79072805 | 8427 | case OP_GV: |
6a077020 | 8428 | if (o->op_type == OP_PADAV || o->op_next->op_type == OP_RV2AV) { |
0bd48802 | 8429 | OP* const pop = (o->op_type == OP_PADAV) ? |
6a077020 | 8430 | o->op_next : o->op_next->op_next; |
a0d0e21e | 8431 | IV i; |
f9dc862f | 8432 | if (pop && pop->op_type == OP_CONST && |
af5acbb4 | 8433 | ((PL_op = pop->op_next)) && |
8990e307 | 8434 | pop->op_next->op_type == OP_AELEM && |
a0d0e21e | 8435 | !(pop->op_next->op_private & |
78f9721b | 8436 | (OPpLVAL_INTRO|OPpLVAL_DEFER|OPpDEREF|OPpMAYBE_LVSUB)) && |
fc15ae8f | 8437 | (i = SvIV(((SVOP*)pop)->op_sv) - CopARYBASE_get(PL_curcop)) |
a0d0e21e | 8438 | <= 255 && |
8990e307 LW |
8439 | i >= 0) |
8440 | { | |
350de78d | 8441 | GV *gv; |
af5acbb4 DM |
8442 | if (cSVOPx(pop)->op_private & OPpCONST_STRICT) |
8443 | no_bareword_allowed(pop); | |
6a077020 DM |
8444 | if (o->op_type == OP_GV) |
8445 | op_null(o->op_next); | |
93c66552 DM |
8446 | op_null(pop->op_next); |
8447 | op_null(pop); | |
a0d0e21e LW |
8448 | o->op_flags |= pop->op_next->op_flags & OPf_MOD; |
8449 | o->op_next = pop->op_next->op_next; | |
22c35a8c | 8450 | o->op_ppaddr = PL_ppaddr[OP_AELEMFAST]; |
a0d0e21e | 8451 | o->op_private = (U8)i; |
6a077020 DM |
8452 | if (o->op_type == OP_GV) { |
8453 | gv = cGVOPo_gv; | |
8454 | GvAVn(gv); | |
8455 | } | |
8456 | else | |
8457 | o->op_flags |= OPf_SPECIAL; | |
8458 | o->op_type = OP_AELEMFAST; | |
8459 | } | |
6a077020 DM |
8460 | break; |
8461 | } | |
8462 | ||
8463 | if (o->op_next->op_type == OP_RV2SV) { | |
8464 | if (!(o->op_next->op_private & OPpDEREF)) { | |
8465 | op_null(o->op_next); | |
8466 | o->op_private |= o->op_next->op_private & (OPpLVAL_INTRO | |
8467 | | OPpOUR_INTRO); | |
8468 | o->op_next = o->op_next->op_next; | |
8469 | o->op_type = OP_GVSV; | |
8470 | o->op_ppaddr = PL_ppaddr[OP_GVSV]; | |
8990e307 | 8471 | } |
79072805 | 8472 | } |
e476b1b5 | 8473 | else if ((o->op_private & OPpEARLY_CV) && ckWARN(WARN_PROTOTYPE)) { |
551405c4 | 8474 | GV * const gv = cGVOPo_gv; |
b15aece3 | 8475 | if (SvTYPE(gv) == SVt_PVGV && GvCV(gv) && SvPVX_const(GvCV(gv))) { |
76cd736e | 8476 | /* XXX could check prototype here instead of just carping */ |
551405c4 | 8477 | SV * const sv = sv_newmortal(); |
bd61b366 | 8478 | gv_efullname3(sv, gv, NULL); |
9014280d | 8479 | Perl_warner(aTHX_ packWARN(WARN_PROTOTYPE), |
35c1215d | 8480 | "%"SVf"() called too early to check prototype", |
be2597df | 8481 | SVfARG(sv)); |
76cd736e GS |
8482 | } |
8483 | } | |
89de2904 AMS |
8484 | else if (o->op_next->op_type == OP_READLINE |
8485 | && o->op_next->op_next->op_type == OP_CONCAT | |
8486 | && (o->op_next->op_next->op_flags & OPf_STACKED)) | |
8487 | { | |
d2c45030 AMS |
8488 | /* Turn "$a .= <FH>" into an OP_RCATLINE. AMS 20010917 */ |
8489 | o->op_type = OP_RCATLINE; | |
8490 | o->op_flags |= OPf_STACKED; | |
8491 | o->op_ppaddr = PL_ppaddr[OP_RCATLINE]; | |
89de2904 | 8492 | op_null(o->op_next->op_next); |
d2c45030 | 8493 | op_null(o->op_next); |
89de2904 | 8494 | } |
76cd736e | 8495 | |
79072805 LW |
8496 | break; |
8497 | ||
a0d0e21e | 8498 | case OP_MAPWHILE: |
79072805 LW |
8499 | case OP_GREPWHILE: |
8500 | case OP_AND: | |
8501 | case OP_OR: | |
c963b151 | 8502 | case OP_DOR: |
2c2d71f5 JH |
8503 | case OP_ANDASSIGN: |
8504 | case OP_ORASSIGN: | |
c963b151 | 8505 | case OP_DORASSIGN: |
1a67a97c SM |
8506 | case OP_COND_EXPR: |
8507 | case OP_RANGE: | |
c5917253 | 8508 | case OP_ONCE: |
fd4d1407 IZ |
8509 | while (cLOGOP->op_other->op_type == OP_NULL) |
8510 | cLOGOP->op_other = cLOGOP->op_other->op_next; | |
a2efc822 | 8511 | peep(cLOGOP->op_other); /* Recursive calls are not replaced by fptr calls */ |
79072805 LW |
8512 | break; |
8513 | ||
79072805 | 8514 | case OP_ENTERLOOP: |
9c2ca71a | 8515 | case OP_ENTERITER: |
58cccf98 SM |
8516 | while (cLOOP->op_redoop->op_type == OP_NULL) |
8517 | cLOOP->op_redoop = cLOOP->op_redoop->op_next; | |
79072805 | 8518 | peep(cLOOP->op_redoop); |
58cccf98 SM |
8519 | while (cLOOP->op_nextop->op_type == OP_NULL) |
8520 | cLOOP->op_nextop = cLOOP->op_nextop->op_next; | |
79072805 | 8521 | peep(cLOOP->op_nextop); |
58cccf98 SM |
8522 | while (cLOOP->op_lastop->op_type == OP_NULL) |
8523 | cLOOP->op_lastop = cLOOP->op_lastop->op_next; | |
79072805 LW |
8524 | peep(cLOOP->op_lastop); |
8525 | break; | |
8526 | ||
79072805 | 8527 | case OP_SUBST: |
29f2e912 NC |
8528 | assert(!(cPMOP->op_pmflags & PMf_ONCE)); |
8529 | while (cPMOP->op_pmstashstartu.op_pmreplstart && | |
8530 | cPMOP->op_pmstashstartu.op_pmreplstart->op_type == OP_NULL) | |
8531 | cPMOP->op_pmstashstartu.op_pmreplstart | |
8532 | = cPMOP->op_pmstashstartu.op_pmreplstart->op_next; | |
8533 | peep(cPMOP->op_pmstashstartu.op_pmreplstart); | |
79072805 LW |
8534 | break; |
8535 | ||
a0d0e21e | 8536 | case OP_EXEC: |
041457d9 DM |
8537 | if (o->op_next && o->op_next->op_type == OP_NEXTSTATE |
8538 | && ckWARN(WARN_SYNTAX)) | |
8539 | { | |
1496a290 AL |
8540 | if (o->op_next->op_sibling) { |
8541 | const OPCODE type = o->op_next->op_sibling->op_type; | |
8542 | if (type != OP_EXIT && type != OP_WARN && type != OP_DIE) { | |
8543 | const line_t oldline = CopLINE(PL_curcop); | |
8544 | CopLINE_set(PL_curcop, CopLINE((COP*)o->op_next)); | |
8545 | Perl_warner(aTHX_ packWARN(WARN_EXEC), | |
8546 | "Statement unlikely to be reached"); | |
8547 | Perl_warner(aTHX_ packWARN(WARN_EXEC), | |
8548 | "\t(Maybe you meant system() when you said exec()?)\n"); | |
8549 | CopLINE_set(PL_curcop, oldline); | |
8550 | } | |
a0d0e21e LW |
8551 | } |
8552 | } | |
8553 | break; | |
b2ffa427 | 8554 | |
c750a3ec | 8555 | case OP_HELEM: { |
e75d1f10 | 8556 | UNOP *rop; |
6d822dc4 | 8557 | SV *lexname; |
e75d1f10 | 8558 | GV **fields; |
6d822dc4 | 8559 | SV **svp, *sv; |
d5263905 | 8560 | const char *key = NULL; |
c750a3ec | 8561 | STRLEN keylen; |
b2ffa427 | 8562 | |
1c846c1f | 8563 | if (((BINOP*)o)->op_last->op_type != OP_CONST) |
c750a3ec | 8564 | break; |
1c846c1f NIS |
8565 | |
8566 | /* Make the CONST have a shared SV */ | |
8567 | svp = cSVOPx_svp(((BINOP*)o)->op_last); | |
3049cdab | 8568 | if ((!SvFAKE(sv = *svp) || !SvREADONLY(sv)) && !IS_PADCONST(sv)) { |
d5263905 | 8569 | key = SvPV_const(sv, keylen); |
25716404 | 8570 | lexname = newSVpvn_share(key, |
bb7a0f54 | 8571 | SvUTF8(sv) ? -(I32)keylen : (I32)keylen, |
25716404 | 8572 | 0); |
1c846c1f NIS |
8573 | SvREFCNT_dec(sv); |
8574 | *svp = lexname; | |
8575 | } | |
e75d1f10 RD |
8576 | |
8577 | if ((o->op_private & (OPpLVAL_INTRO))) | |
8578 | break; | |
8579 | ||
8580 | rop = (UNOP*)((BINOP*)o)->op_first; | |
8581 | if (rop->op_type != OP_RV2HV || rop->op_first->op_type != OP_PADSV) | |
8582 | break; | |
8583 | lexname = *av_fetch(PL_comppad_name, rop->op_first->op_targ, TRUE); | |
00b1698f | 8584 | if (!SvPAD_TYPED(lexname)) |
e75d1f10 | 8585 | break; |
a4fc7abc | 8586 | fields = (GV**)hv_fetchs(SvSTASH(lexname), "FIELDS", FALSE); |
e75d1f10 RD |
8587 | if (!fields || !GvHV(*fields)) |
8588 | break; | |
93524f2b | 8589 | key = SvPV_const(*svp, keylen); |
e75d1f10 | 8590 | if (!hv_fetch(GvHV(*fields), key, |
bb7a0f54 | 8591 | SvUTF8(*svp) ? -(I32)keylen : (I32)keylen, FALSE)) |
e75d1f10 RD |
8592 | { |
8593 | Perl_croak(aTHX_ "No such class field \"%s\" " | |
8594 | "in variable %s of type %s", | |
93524f2b | 8595 | key, SvPV_nolen_const(lexname), HvNAME_get(SvSTASH(lexname))); |
e75d1f10 RD |
8596 | } |
8597 | ||
6d822dc4 MS |
8598 | break; |
8599 | } | |
c750a3ec | 8600 | |
e75d1f10 RD |
8601 | case OP_HSLICE: { |
8602 | UNOP *rop; | |
8603 | SV *lexname; | |
8604 | GV **fields; | |
8605 | SV **svp; | |
93524f2b | 8606 | const char *key; |
e75d1f10 RD |
8607 | STRLEN keylen; |
8608 | SVOP *first_key_op, *key_op; | |
8609 | ||
8610 | if ((o->op_private & (OPpLVAL_INTRO)) | |
8611 | /* I bet there's always a pushmark... */ | |
8612 | || ((LISTOP*)o)->op_first->op_sibling->op_type != OP_LIST) | |
8613 | /* hmmm, no optimization if list contains only one key. */ | |
8614 | break; | |
8615 | rop = (UNOP*)((LISTOP*)o)->op_last; | |
8616 | if (rop->op_type != OP_RV2HV) | |
8617 | break; | |
8618 | if (rop->op_first->op_type == OP_PADSV) | |
8619 | /* @$hash{qw(keys here)} */ | |
8620 | rop = (UNOP*)rop->op_first; | |
8621 | else { | |
8622 | /* @{$hash}{qw(keys here)} */ | |
8623 | if (rop->op_first->op_type == OP_SCOPE | |
8624 | && cLISTOPx(rop->op_first)->op_last->op_type == OP_PADSV) | |
8625 | { | |
8626 | rop = (UNOP*)cLISTOPx(rop->op_first)->op_last; | |
8627 | } | |
8628 | else | |
8629 | break; | |
8630 | } | |
8631 | ||
8632 | lexname = *av_fetch(PL_comppad_name, rop->op_targ, TRUE); | |
00b1698f | 8633 | if (!SvPAD_TYPED(lexname)) |
e75d1f10 | 8634 | break; |
a4fc7abc | 8635 | fields = (GV**)hv_fetchs(SvSTASH(lexname), "FIELDS", FALSE); |
e75d1f10 RD |
8636 | if (!fields || !GvHV(*fields)) |
8637 | break; | |
8638 | /* Again guessing that the pushmark can be jumped over.... */ | |
8639 | first_key_op = (SVOP*)((LISTOP*)((LISTOP*)o)->op_first->op_sibling) | |
8640 | ->op_first->op_sibling; | |
8641 | for (key_op = first_key_op; key_op; | |
8642 | key_op = (SVOP*)key_op->op_sibling) { | |
8643 | if (key_op->op_type != OP_CONST) | |
8644 | continue; | |
8645 | svp = cSVOPx_svp(key_op); | |
93524f2b | 8646 | key = SvPV_const(*svp, keylen); |
e75d1f10 | 8647 | if (!hv_fetch(GvHV(*fields), key, |
bb7a0f54 | 8648 | SvUTF8(*svp) ? -(I32)keylen : (I32)keylen, FALSE)) |
e75d1f10 RD |
8649 | { |
8650 | Perl_croak(aTHX_ "No such class field \"%s\" " | |
8651 | "in variable %s of type %s", | |
bfcb3514 | 8652 | key, SvPV_nolen(lexname), HvNAME_get(SvSTASH(lexname))); |
e75d1f10 RD |
8653 | } |
8654 | } | |
8655 | break; | |
8656 | } | |
8657 | ||
fe1bc4cf | 8658 | case OP_SORT: { |
fe1bc4cf | 8659 | /* will point to RV2AV or PADAV op on LHS/RHS of assign */ |
551405c4 | 8660 | OP *oleft; |
fe1bc4cf DM |
8661 | OP *o2; |
8662 | ||
fe1bc4cf | 8663 | /* check that RHS of sort is a single plain array */ |
551405c4 | 8664 | OP *oright = cUNOPo->op_first; |
fe1bc4cf DM |
8665 | if (!oright || oright->op_type != OP_PUSHMARK) |
8666 | break; | |
471178c0 NC |
8667 | |
8668 | /* reverse sort ... can be optimised. */ | |
8669 | if (!cUNOPo->op_sibling) { | |
8670 | /* Nothing follows us on the list. */ | |
551405c4 | 8671 | OP * const reverse = o->op_next; |
471178c0 NC |
8672 | |
8673 | if (reverse->op_type == OP_REVERSE && | |
8674 | (reverse->op_flags & OPf_WANT) == OPf_WANT_LIST) { | |
551405c4 | 8675 | OP * const pushmark = cUNOPx(reverse)->op_first; |
471178c0 NC |
8676 | if (pushmark && (pushmark->op_type == OP_PUSHMARK) |
8677 | && (cUNOPx(pushmark)->op_sibling == o)) { | |
8678 | /* reverse -> pushmark -> sort */ | |
8679 | o->op_private |= OPpSORT_REVERSE; | |
8680 | op_null(reverse); | |
8681 | pushmark->op_next = oright->op_next; | |
8682 | op_null(oright); | |
8683 | } | |
8684 | } | |
8685 | } | |
8686 | ||
8687 | /* make @a = sort @a act in-place */ | |
8688 | ||
fe1bc4cf DM |
8689 | oright = cUNOPx(oright)->op_sibling; |
8690 | if (!oright) | |
8691 | break; | |
8692 | if (oright->op_type == OP_NULL) { /* skip sort block/sub */ | |
8693 | oright = cUNOPx(oright)->op_sibling; | |
8694 | } | |
8695 | ||
8696 | if (!oright || | |
8697 | (oright->op_type != OP_RV2AV && oright->op_type != OP_PADAV) | |
8698 | || oright->op_next != o | |
8699 | || (oright->op_private & OPpLVAL_INTRO) | |
8700 | ) | |
8701 | break; | |
8702 | ||
8703 | /* o2 follows the chain of op_nexts through the LHS of the | |
8704 | * assign (if any) to the aassign op itself */ | |
8705 | o2 = o->op_next; | |
8706 | if (!o2 || o2->op_type != OP_NULL) | |
8707 | break; | |
8708 | o2 = o2->op_next; | |
8709 | if (!o2 || o2->op_type != OP_PUSHMARK) | |
8710 | break; | |
8711 | o2 = o2->op_next; | |
8712 | if (o2 && o2->op_type == OP_GV) | |
8713 | o2 = o2->op_next; | |
8714 | if (!o2 | |
8715 | || (o2->op_type != OP_PADAV && o2->op_type != OP_RV2AV) | |
8716 | || (o2->op_private & OPpLVAL_INTRO) | |
8717 | ) | |
8718 | break; | |
8719 | oleft = o2; | |
8720 | o2 = o2->op_next; | |
8721 | if (!o2 || o2->op_type != OP_NULL) | |
8722 | break; | |
8723 | o2 = o2->op_next; | |
8724 | if (!o2 || o2->op_type != OP_AASSIGN | |
8725 | || (o2->op_flags & OPf_WANT) != OPf_WANT_VOID) | |
8726 | break; | |
8727 | ||
db7511db DM |
8728 | /* check that the sort is the first arg on RHS of assign */ |
8729 | ||
8730 | o2 = cUNOPx(o2)->op_first; | |
8731 | if (!o2 || o2->op_type != OP_NULL) | |
8732 | break; | |
8733 | o2 = cUNOPx(o2)->op_first; | |
8734 | if (!o2 || o2->op_type != OP_PUSHMARK) | |
8735 | break; | |
8736 | if (o2->op_sibling != o) | |
8737 | break; | |
8738 | ||
fe1bc4cf DM |
8739 | /* check the array is the same on both sides */ |
8740 | if (oleft->op_type == OP_RV2AV) { | |
8741 | if (oright->op_type != OP_RV2AV | |
8742 | || !cUNOPx(oright)->op_first | |
8743 | || cUNOPx(oright)->op_first->op_type != OP_GV | |
8744 | || cGVOPx_gv(cUNOPx(oleft)->op_first) != | |
8745 | cGVOPx_gv(cUNOPx(oright)->op_first) | |
8746 | ) | |
8747 | break; | |
8748 | } | |
8749 | else if (oright->op_type != OP_PADAV | |
8750 | || oright->op_targ != oleft->op_targ | |
8751 | ) | |
8752 | break; | |
8753 | ||
8754 | /* transfer MODishness etc from LHS arg to RHS arg */ | |
8755 | oright->op_flags = oleft->op_flags; | |
8756 | o->op_private |= OPpSORT_INPLACE; | |
8757 | ||
8758 | /* excise push->gv->rv2av->null->aassign */ | |
8759 | o2 = o->op_next->op_next; | |
8760 | op_null(o2); /* PUSHMARK */ | |
8761 | o2 = o2->op_next; | |
8762 | if (o2->op_type == OP_GV) { | |
8763 | op_null(o2); /* GV */ | |
8764 | o2 = o2->op_next; | |
8765 | } | |
8766 | op_null(o2); /* RV2AV or PADAV */ | |
8767 | o2 = o2->op_next->op_next; | |
8768 | op_null(o2); /* AASSIGN */ | |
8769 | ||
8770 | o->op_next = o2->op_next; | |
8771 | ||
8772 | break; | |
8773 | } | |
ef3e5ea9 NC |
8774 | |
8775 | case OP_REVERSE: { | |
e682d7b7 | 8776 | OP *ourmark, *theirmark, *ourlast, *iter, *expushmark, *rv2av; |
ce335f37 | 8777 | OP *gvop = NULL; |
ef3e5ea9 | 8778 | LISTOP *enter, *exlist; |
ef3e5ea9 NC |
8779 | |
8780 | enter = (LISTOP *) o->op_next; | |
8781 | if (!enter) | |
8782 | break; | |
8783 | if (enter->op_type == OP_NULL) { | |
8784 | enter = (LISTOP *) enter->op_next; | |
8785 | if (!enter) | |
8786 | break; | |
8787 | } | |
d46f46af NC |
8788 | /* for $a (...) will have OP_GV then OP_RV2GV here. |
8789 | for (...) just has an OP_GV. */ | |
ce335f37 NC |
8790 | if (enter->op_type == OP_GV) { |
8791 | gvop = (OP *) enter; | |
8792 | enter = (LISTOP *) enter->op_next; | |
8793 | if (!enter) | |
8794 | break; | |
d46f46af NC |
8795 | if (enter->op_type == OP_RV2GV) { |
8796 | enter = (LISTOP *) enter->op_next; | |
8797 | if (!enter) | |
ce335f37 | 8798 | break; |
d46f46af | 8799 | } |
ce335f37 NC |
8800 | } |
8801 | ||
ef3e5ea9 NC |
8802 | if (enter->op_type != OP_ENTERITER) |
8803 | break; | |
8804 | ||
8805 | iter = enter->op_next; | |
8806 | if (!iter || iter->op_type != OP_ITER) | |
8807 | break; | |
8808 | ||
ce335f37 NC |
8809 | expushmark = enter->op_first; |
8810 | if (!expushmark || expushmark->op_type != OP_NULL | |
8811 | || expushmark->op_targ != OP_PUSHMARK) | |
8812 | break; | |
8813 | ||
8814 | exlist = (LISTOP *) expushmark->op_sibling; | |
ef3e5ea9 NC |
8815 | if (!exlist || exlist->op_type != OP_NULL |
8816 | || exlist->op_targ != OP_LIST) | |
8817 | break; | |
8818 | ||
8819 | if (exlist->op_last != o) { | |
8820 | /* Mmm. Was expecting to point back to this op. */ | |
8821 | break; | |
8822 | } | |
8823 | theirmark = exlist->op_first; | |
8824 | if (!theirmark || theirmark->op_type != OP_PUSHMARK) | |
8825 | break; | |
8826 | ||
c491ecac | 8827 | if (theirmark->op_sibling != o) { |
ef3e5ea9 NC |
8828 | /* There's something between the mark and the reverse, eg |
8829 | for (1, reverse (...)) | |
8830 | so no go. */ | |
8831 | break; | |
8832 | } | |
8833 | ||
c491ecac NC |
8834 | ourmark = ((LISTOP *)o)->op_first; |
8835 | if (!ourmark || ourmark->op_type != OP_PUSHMARK) | |
8836 | break; | |
8837 | ||
ef3e5ea9 NC |
8838 | ourlast = ((LISTOP *)o)->op_last; |
8839 | if (!ourlast || ourlast->op_next != o) | |
8840 | break; | |
8841 | ||
e682d7b7 NC |
8842 | rv2av = ourmark->op_sibling; |
8843 | if (rv2av && rv2av->op_type == OP_RV2AV && rv2av->op_sibling == 0 | |
8844 | && rv2av->op_flags == (OPf_WANT_LIST | OPf_KIDS) | |
8845 | && enter->op_flags == (OPf_WANT_LIST | OPf_KIDS)) { | |
8846 | /* We're just reversing a single array. */ | |
8847 | rv2av->op_flags = OPf_WANT_SCALAR | OPf_KIDS | OPf_REF; | |
8848 | enter->op_flags |= OPf_STACKED; | |
8849 | } | |
8850 | ||
ef3e5ea9 NC |
8851 | /* We don't have control over who points to theirmark, so sacrifice |
8852 | ours. */ | |
8853 | theirmark->op_next = ourmark->op_next; | |
8854 | theirmark->op_flags = ourmark->op_flags; | |
ce335f37 | 8855 | ourlast->op_next = gvop ? gvop : (OP *) enter; |
ef3e5ea9 NC |
8856 | op_null(ourmark); |
8857 | op_null(o); | |
8858 | enter->op_private |= OPpITER_REVERSED; | |
8859 | iter->op_private |= OPpITER_REVERSED; | |
8860 | ||
8861 | break; | |
8862 | } | |
e26df76a NC |
8863 | |
8864 | case OP_SASSIGN: { | |
8865 | OP *rv2gv; | |
8866 | UNOP *refgen, *rv2cv; | |
8867 | LISTOP *exlist; | |
8868 | ||
50baa5ea | 8869 | if ((o->op_flags & OPf_WANT) != OPf_WANT_VOID) |
de3370bc NC |
8870 | break; |
8871 | ||
e26df76a NC |
8872 | if ((o->op_private & ~OPpASSIGN_BACKWARDS) != 2) |
8873 | break; | |
8874 | ||
8875 | rv2gv = ((BINOP *)o)->op_last; | |
8876 | if (!rv2gv || rv2gv->op_type != OP_RV2GV) | |
8877 | break; | |
8878 | ||
8879 | refgen = (UNOP *)((BINOP *)o)->op_first; | |
8880 | ||
8881 | if (!refgen || refgen->op_type != OP_REFGEN) | |
8882 | break; | |
8883 | ||
8884 | exlist = (LISTOP *)refgen->op_first; | |
8885 | if (!exlist || exlist->op_type != OP_NULL | |
8886 | || exlist->op_targ != OP_LIST) | |
8887 | break; | |
8888 | ||
8889 | if (exlist->op_first->op_type != OP_PUSHMARK) | |
8890 | break; | |
8891 | ||
8892 | rv2cv = (UNOP*)exlist->op_last; | |
8893 | ||
8894 | if (rv2cv->op_type != OP_RV2CV) | |
8895 | break; | |
8896 | ||
8897 | assert ((rv2gv->op_private & OPpDONT_INIT_GV) == 0); | |
8898 | assert ((o->op_private & OPpASSIGN_CV_TO_GV) == 0); | |
8899 | assert ((rv2cv->op_private & OPpMAY_RETURN_CONSTANT) == 0); | |
8900 | ||
8901 | o->op_private |= OPpASSIGN_CV_TO_GV; | |
8902 | rv2gv->op_private |= OPpDONT_INIT_GV; | |
8903 | rv2cv->op_private |= OPpMAY_RETURN_CONSTANT; | |
8904 | ||
8905 | break; | |
8906 | } | |
8907 | ||
fe1bc4cf | 8908 | |
0477511c NC |
8909 | case OP_QR: |
8910 | case OP_MATCH: | |
29f2e912 NC |
8911 | if (!(cPMOP->op_pmflags & PMf_ONCE)) { |
8912 | assert (!cPMOP->op_pmstashstartu.op_pmreplstart); | |
8913 | } | |
79072805 LW |
8914 | break; |
8915 | } | |
a0d0e21e | 8916 | oldop = o; |
79072805 | 8917 | } |
a0d0e21e | 8918 | LEAVE; |
79072805 | 8919 | } |
beab0874 | 8920 | |
cef6ea9d | 8921 | const char* |
1cb0ed9b | 8922 | Perl_custom_op_name(pTHX_ const OP* o) |
53e06cf0 | 8923 | { |
97aff369 | 8924 | dVAR; |
e1ec3a88 | 8925 | const IV index = PTR2IV(o->op_ppaddr); |
53e06cf0 SC |
8926 | SV* keysv; |
8927 | HE* he; | |
8928 | ||
7918f24d NC |
8929 | PERL_ARGS_ASSERT_CUSTOM_OP_NAME; |
8930 | ||
53e06cf0 | 8931 | if (!PL_custom_op_names) /* This probably shouldn't happen */ |
27da23d5 | 8932 | return (char *)PL_op_name[OP_CUSTOM]; |
53e06cf0 SC |
8933 | |
8934 | keysv = sv_2mortal(newSViv(index)); | |
8935 | ||
8936 | he = hv_fetch_ent(PL_custom_op_names, keysv, 0, 0); | |
8937 | if (!he) | |
27da23d5 | 8938 | return (char *)PL_op_name[OP_CUSTOM]; /* Don't know who you are */ |
53e06cf0 SC |
8939 | |
8940 | return SvPV_nolen(HeVAL(he)); | |
8941 | } | |
8942 | ||
cef6ea9d | 8943 | const char* |
1cb0ed9b | 8944 | Perl_custom_op_desc(pTHX_ const OP* o) |
53e06cf0 | 8945 | { |
97aff369 | 8946 | dVAR; |
e1ec3a88 | 8947 | const IV index = PTR2IV(o->op_ppaddr); |
53e06cf0 SC |
8948 | SV* keysv; |
8949 | HE* he; | |
8950 | ||
7918f24d NC |
8951 | PERL_ARGS_ASSERT_CUSTOM_OP_DESC; |
8952 | ||
53e06cf0 | 8953 | if (!PL_custom_op_descs) |
27da23d5 | 8954 | return (char *)PL_op_desc[OP_CUSTOM]; |
53e06cf0 SC |
8955 | |
8956 | keysv = sv_2mortal(newSViv(index)); | |
8957 | ||
8958 | he = hv_fetch_ent(PL_custom_op_descs, keysv, 0, 0); | |
8959 | if (!he) | |
27da23d5 | 8960 | return (char *)PL_op_desc[OP_CUSTOM]; |
53e06cf0 SC |
8961 | |
8962 | return SvPV_nolen(HeVAL(he)); | |
8963 | } | |
19e8ce8e | 8964 | |
beab0874 JT |
8965 | #include "XSUB.h" |
8966 | ||
8967 | /* Efficient sub that returns a constant scalar value. */ | |
8968 | static void | |
acfe0abc | 8969 | const_sv_xsub(pTHX_ CV* cv) |
beab0874 | 8970 | { |
97aff369 | 8971 | dVAR; |
beab0874 | 8972 | dXSARGS; |
9cbac4c7 | 8973 | if (items != 0) { |
6f207bd3 | 8974 | NOOP; |
9cbac4c7 DM |
8975 | #if 0 |
8976 | Perl_croak(aTHX_ "usage: %s::%s()", | |
bfcb3514 | 8977 | HvNAME_get(GvSTASH(CvGV(cv))), GvNAME(CvGV(cv))); |
9cbac4c7 DM |
8978 | #endif |
8979 | } | |
9a049f1c | 8980 | EXTEND(sp, 1); |
ad64d0ec | 8981 | ST(0) = MUTABLE_SV(XSANY.any_ptr); |
beab0874 JT |
8982 | XSRETURN(1); |
8983 | } | |
4946a0fa NC |
8984 | |
8985 | /* | |
8986 | * Local variables: | |
8987 | * c-indentation-style: bsd | |
8988 | * c-basic-offset: 4 | |
8989 | * indent-tabs-mode: t | |
8990 | * End: | |
8991 | * | |
37442d52 RGS |
8992 | * ex: set ts=8 sts=4 sw=4 noet: |
8993 | */ |