Commit | Line | Data |
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4b88f280 | 1 | #line 2 "op.c" |
a0d0e21e | 2 | /* op.c |
79072805 | 3 | * |
1129b882 NC |
4 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
5 | * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others | |
79072805 LW |
6 | * |
7 | * You may distribute under the terms of either the GNU General Public | |
8 | * License or the Artistic License, as specified in the README file. | |
9 | * | |
a0d0e21e LW |
10 | */ |
11 | ||
12 | /* | |
4ac71550 TC |
13 | * 'You see: Mr. Drogo, he married poor Miss Primula Brandybuck. She was |
14 | * our Mr. Bilbo's first cousin on the mother's side (her mother being the | |
15 | * youngest of the Old Took's daughters); and Mr. Drogo was his second | |
16 | * cousin. So Mr. Frodo is his first *and* second cousin, once removed | |
17 | * either way, as the saying is, if you follow me.' --the Gaffer | |
18 | * | |
19 | * [p.23 of _The Lord of the Rings_, I/i: "A Long-Expected Party"] | |
79072805 LW |
20 | */ |
21 | ||
166f8a29 DM |
22 | /* This file contains the functions that create, manipulate and optimize |
23 | * the OP structures that hold a compiled perl program. | |
24 | * | |
25 | * A Perl program is compiled into a tree of OPs. Each op contains | |
26 | * structural pointers (eg to its siblings and the next op in the | |
27 | * execution sequence), a pointer to the function that would execute the | |
28 | * op, plus any data specific to that op. For example, an OP_CONST op | |
29 | * points to the pp_const() function and to an SV containing the constant | |
30 | * value. When pp_const() is executed, its job is to push that SV onto the | |
31 | * stack. | |
32 | * | |
33 | * OPs are mainly created by the newFOO() functions, which are mainly | |
34 | * called from the parser (in perly.y) as the code is parsed. For example | |
35 | * the Perl code $a + $b * $c would cause the equivalent of the following | |
36 | * to be called (oversimplifying a bit): | |
37 | * | |
38 | * newBINOP(OP_ADD, flags, | |
39 | * newSVREF($a), | |
40 | * newBINOP(OP_MULTIPLY, flags, newSVREF($b), newSVREF($c)) | |
41 | * ) | |
42 | * | |
43 | * Note that during the build of miniperl, a temporary copy of this file | |
44 | * is made, called opmini.c. | |
45 | */ | |
ccfc67b7 | 46 | |
61b743bb DM |
47 | /* |
48 | Perl's compiler is essentially a 3-pass compiler with interleaved phases: | |
49 | ||
50 | A bottom-up pass | |
51 | A top-down pass | |
52 | An execution-order pass | |
53 | ||
54 | The bottom-up pass is represented by all the "newOP" routines and | |
55 | the ck_ routines. The bottom-upness is actually driven by yacc. | |
56 | So at the point that a ck_ routine fires, we have no idea what the | |
57 | context is, either upward in the syntax tree, or either forward or | |
58 | backward in the execution order. (The bottom-up parser builds that | |
59 | part of the execution order it knows about, but if you follow the "next" | |
60 | links around, you'll find it's actually a closed loop through the | |
ef9da979 | 61 | top level node.) |
61b743bb DM |
62 | |
63 | Whenever the bottom-up parser gets to a node that supplies context to | |
64 | its components, it invokes that portion of the top-down pass that applies | |
65 | to that part of the subtree (and marks the top node as processed, so | |
66 | if a node further up supplies context, it doesn't have to take the | |
67 | plunge again). As a particular subcase of this, as the new node is | |
68 | built, it takes all the closed execution loops of its subcomponents | |
69 | and links them into a new closed loop for the higher level node. But | |
70 | it's still not the real execution order. | |
71 | ||
72 | The actual execution order is not known till we get a grammar reduction | |
73 | to a top-level unit like a subroutine or file that will be called by | |
74 | "name" rather than via a "next" pointer. At that point, we can call | |
75 | into peep() to do that code's portion of the 3rd pass. It has to be | |
76 | recursive, but it's recursive on basic blocks, not on tree nodes. | |
77 | */ | |
78 | ||
06e0342d | 79 | /* To implement user lexical pragmas, there needs to be a way at run time to |
b3ca2e83 NC |
80 | get the compile time state of %^H for that block. Storing %^H in every |
81 | block (or even COP) would be very expensive, so a different approach is | |
82 | taken. The (running) state of %^H is serialised into a tree of HE-like | |
83 | structs. Stores into %^H are chained onto the current leaf as a struct | |
84 | refcounted_he * with the key and the value. Deletes from %^H are saved | |
85 | with a value of PL_sv_placeholder. The state of %^H at any point can be | |
86 | turned back into a regular HV by walking back up the tree from that point's | |
06e0342d | 87 | leaf, ignoring any key you've already seen (placeholder or not), storing |
b3ca2e83 NC |
88 | the rest into the HV structure, then removing the placeholders. Hence |
89 | memory is only used to store the %^H deltas from the enclosing COP, rather | |
90 | than the entire %^H on each COP. | |
91 | ||
92 | To cause actions on %^H to write out the serialisation records, it has | |
93 | magic type 'H'. This magic (itself) does nothing, but its presence causes | |
94 | the values to gain magic type 'h', which has entries for set and clear. | |
c28fe1ec | 95 | C<Perl_magic_sethint> updates C<PL_compiling.cop_hints_hash> with a store |
34795b44 | 96 | record, with deletes written by C<Perl_magic_clearhint>. C<SAVEHINTS> |
c28fe1ec NC |
97 | saves the current C<PL_compiling.cop_hints_hash> on the save stack, so that |
98 | it will be correctly restored when any inner compiling scope is exited. | |
b3ca2e83 NC |
99 | */ |
100 | ||
79072805 | 101 | #include "EXTERN.h" |
864dbfa3 | 102 | #define PERL_IN_OP_C |
79072805 | 103 | #include "perl.h" |
77ca0c92 | 104 | #include "keywords.h" |
79072805 | 105 | |
a07e034d | 106 | #define CALL_PEEP(o) CALL_FPTR(PL_peepp)(aTHX_ o) |
f37b8c3f | 107 | #define CALL_OPFREEHOOK(o) if (PL_opfreehook) CALL_FPTR(PL_opfreehook)(aTHX_ o) |
a2efc822 | 108 | |
238a4c30 NIS |
109 | #if defined(PL_OP_SLAB_ALLOC) |
110 | ||
f1fac472 NC |
111 | #ifdef PERL_DEBUG_READONLY_OPS |
112 | # define PERL_SLAB_SIZE 4096 | |
113 | # include <sys/mman.h> | |
114 | #endif | |
115 | ||
238a4c30 NIS |
116 | #ifndef PERL_SLAB_SIZE |
117 | #define PERL_SLAB_SIZE 2048 | |
118 | #endif | |
119 | ||
c7e45529 | 120 | void * |
e91d68d5 | 121 | Perl_Slab_Alloc(pTHX_ size_t sz) |
1c846c1f | 122 | { |
5186cc12 | 123 | dVAR; |
5a8e194f NIS |
124 | /* |
125 | * To make incrementing use count easy PL_OpSlab is an I32 * | |
126 | * To make inserting the link to slab PL_OpPtr is I32 ** | |
127 | * So compute size in units of sizeof(I32 *) as that is how Pl_OpPtr increments | |
128 | * Add an overhead for pointer to slab and round up as a number of pointers | |
129 | */ | |
130 | sz = (sz + 2*sizeof(I32 *) -1)/sizeof(I32 *); | |
238a4c30 | 131 | if ((PL_OpSpace -= sz) < 0) { |
f1fac472 NC |
132 | #ifdef PERL_DEBUG_READONLY_OPS |
133 | /* We need to allocate chunk by chunk so that we can control the VM | |
134 | mapping */ | |
5186cc12 | 135 | PL_OpPtr = (I32**) mmap(0, PERL_SLAB_SIZE*sizeof(I32*), PROT_READ|PROT_WRITE, |
f1fac472 NC |
136 | MAP_ANON|MAP_PRIVATE, -1, 0); |
137 | ||
138 | DEBUG_m(PerlIO_printf(Perl_debug_log, "mapped %lu at %p\n", | |
139 | (unsigned long) PERL_SLAB_SIZE*sizeof(I32*), | |
140 | PL_OpPtr)); | |
141 | if(PL_OpPtr == MAP_FAILED) { | |
142 | perror("mmap failed"); | |
143 | abort(); | |
144 | } | |
145 | #else | |
277e868c NC |
146 | |
147 | PL_OpPtr = (I32 **) PerlMemShared_calloc(PERL_SLAB_SIZE,sizeof(I32*)); | |
f1fac472 | 148 | #endif |
083fcd59 | 149 | if (!PL_OpPtr) { |
238a4c30 NIS |
150 | return NULL; |
151 | } | |
5a8e194f NIS |
152 | /* We reserve the 0'th I32 sized chunk as a use count */ |
153 | PL_OpSlab = (I32 *) PL_OpPtr; | |
154 | /* Reduce size by the use count word, and by the size we need. | |
155 | * Latter is to mimic the '-=' in the if() above | |
156 | */ | |
157 | PL_OpSpace = PERL_SLAB_SIZE - (sizeof(I32)+sizeof(I32 **)-1)/sizeof(I32 **) - sz; | |
238a4c30 NIS |
158 | /* Allocation pointer starts at the top. |
159 | Theory: because we build leaves before trunk allocating at end | |
160 | means that at run time access is cache friendly upward | |
161 | */ | |
5a8e194f | 162 | PL_OpPtr += PERL_SLAB_SIZE; |
f1fac472 NC |
163 | |
164 | #ifdef PERL_DEBUG_READONLY_OPS | |
165 | /* We remember this slab. */ | |
166 | /* This implementation isn't efficient, but it is simple. */ | |
5186cc12 | 167 | PL_slabs = (I32**) realloc(PL_slabs, sizeof(I32**) * (PL_slab_count + 1)); |
f1fac472 NC |
168 | PL_slabs[PL_slab_count++] = PL_OpSlab; |
169 | DEBUG_m(PerlIO_printf(Perl_debug_log, "Allocate %p\n", PL_OpSlab)); | |
170 | #endif | |
238a4c30 NIS |
171 | } |
172 | assert( PL_OpSpace >= 0 ); | |
173 | /* Move the allocation pointer down */ | |
174 | PL_OpPtr -= sz; | |
5a8e194f | 175 | assert( PL_OpPtr > (I32 **) PL_OpSlab ); |
238a4c30 NIS |
176 | *PL_OpPtr = PL_OpSlab; /* Note which slab it belongs to */ |
177 | (*PL_OpSlab)++; /* Increment use count of slab */ | |
5a8e194f | 178 | assert( PL_OpPtr+sz <= ((I32 **) PL_OpSlab + PERL_SLAB_SIZE) ); |
238a4c30 NIS |
179 | assert( *PL_OpSlab > 0 ); |
180 | return (void *)(PL_OpPtr + 1); | |
181 | } | |
182 | ||
f1fac472 NC |
183 | #ifdef PERL_DEBUG_READONLY_OPS |
184 | void | |
185 | Perl_pending_Slabs_to_ro(pTHX) { | |
186 | /* Turn all the allocated op slabs read only. */ | |
187 | U32 count = PL_slab_count; | |
188 | I32 **const slabs = PL_slabs; | |
189 | ||
190 | /* Reset the array of pending OP slabs, as we're about to turn this lot | |
191 | read only. Also, do it ahead of the loop in case the warn triggers, | |
192 | and a warn handler has an eval */ | |
193 | ||
f1fac472 NC |
194 | PL_slabs = NULL; |
195 | PL_slab_count = 0; | |
196 | ||
197 | /* Force a new slab for any further allocation. */ | |
198 | PL_OpSpace = 0; | |
199 | ||
200 | while (count--) { | |
5892a4d4 | 201 | void *const start = slabs[count]; |
f1fac472 NC |
202 | const size_t size = PERL_SLAB_SIZE* sizeof(I32*); |
203 | if(mprotect(start, size, PROT_READ)) { | |
204 | Perl_warn(aTHX_ "mprotect for %p %lu failed with %d", | |
205 | start, (unsigned long) size, errno); | |
206 | } | |
207 | } | |
5892a4d4 NC |
208 | |
209 | free(slabs); | |
f1fac472 NC |
210 | } |
211 | ||
212 | STATIC void | |
213 | S_Slab_to_rw(pTHX_ void *op) | |
214 | { | |
215 | I32 * const * const ptr = (I32 **) op; | |
216 | I32 * const slab = ptr[-1]; | |
7918f24d NC |
217 | |
218 | PERL_ARGS_ASSERT_SLAB_TO_RW; | |
219 | ||
f1fac472 NC |
220 | assert( ptr-1 > (I32 **) slab ); |
221 | assert( ptr < ( (I32 **) slab + PERL_SLAB_SIZE) ); | |
222 | assert( *slab > 0 ); | |
223 | if(mprotect(slab, PERL_SLAB_SIZE*sizeof(I32*), PROT_READ|PROT_WRITE)) { | |
224 | Perl_warn(aTHX_ "mprotect RW for %p %lu failed with %d", | |
225 | slab, (unsigned long) PERL_SLAB_SIZE*sizeof(I32*), errno); | |
226 | } | |
227 | } | |
fc97af9c NC |
228 | |
229 | OP * | |
230 | Perl_op_refcnt_inc(pTHX_ OP *o) | |
231 | { | |
232 | if(o) { | |
233 | Slab_to_rw(o); | |
234 | ++o->op_targ; | |
235 | } | |
236 | return o; | |
237 | ||
238 | } | |
239 | ||
240 | PADOFFSET | |
241 | Perl_op_refcnt_dec(pTHX_ OP *o) | |
242 | { | |
7918f24d | 243 | PERL_ARGS_ASSERT_OP_REFCNT_DEC; |
fc97af9c NC |
244 | Slab_to_rw(o); |
245 | return --o->op_targ; | |
246 | } | |
f1fac472 NC |
247 | #else |
248 | # define Slab_to_rw(op) | |
249 | #endif | |
250 | ||
c7e45529 AE |
251 | void |
252 | Perl_Slab_Free(pTHX_ void *op) | |
238a4c30 | 253 | { |
551405c4 | 254 | I32 * const * const ptr = (I32 **) op; |
aec46f14 | 255 | I32 * const slab = ptr[-1]; |
7918f24d | 256 | PERL_ARGS_ASSERT_SLAB_FREE; |
5a8e194f NIS |
257 | assert( ptr-1 > (I32 **) slab ); |
258 | assert( ptr < ( (I32 **) slab + PERL_SLAB_SIZE) ); | |
238a4c30 | 259 | assert( *slab > 0 ); |
f1fac472 | 260 | Slab_to_rw(op); |
238a4c30 | 261 | if (--(*slab) == 0) { |
7e4e8c89 NC |
262 | # ifdef NETWARE |
263 | # define PerlMemShared PerlMem | |
264 | # endif | |
083fcd59 | 265 | |
f1fac472 | 266 | #ifdef PERL_DEBUG_READONLY_OPS |
782a40f1 | 267 | U32 count = PL_slab_count; |
f1fac472 | 268 | /* Need to remove this slab from our list of slabs */ |
782a40f1 | 269 | if (count) { |
f1fac472 NC |
270 | while (count--) { |
271 | if (PL_slabs[count] == slab) { | |
5186cc12 | 272 | dVAR; |
f1fac472 NC |
273 | /* Found it. Move the entry at the end to overwrite it. */ |
274 | DEBUG_m(PerlIO_printf(Perl_debug_log, | |
275 | "Deallocate %p by moving %p from %lu to %lu\n", | |
276 | PL_OpSlab, | |
277 | PL_slabs[PL_slab_count - 1], | |
278 | PL_slab_count, count)); | |
279 | PL_slabs[count] = PL_slabs[--PL_slab_count]; | |
280 | /* Could realloc smaller at this point, but probably not | |
281 | worth it. */ | |
fc97af9c NC |
282 | if(munmap(slab, PERL_SLAB_SIZE*sizeof(I32*))) { |
283 | perror("munmap failed"); | |
284 | abort(); | |
285 | } | |
286 | break; | |
f1fac472 | 287 | } |
f1fac472 NC |
288 | } |
289 | } | |
290 | #else | |
083fcd59 | 291 | PerlMemShared_free(slab); |
f1fac472 | 292 | #endif |
238a4c30 NIS |
293 | if (slab == PL_OpSlab) { |
294 | PL_OpSpace = 0; | |
295 | } | |
296 | } | |
b7dc083c | 297 | } |
b7dc083c | 298 | #endif |
e50aee73 | 299 | /* |
ce6f1cbc | 300 | * In the following definition, the ", (OP*)0" is just to make the compiler |
a5f75d66 | 301 | * think the expression is of the right type: croak actually does a Siglongjmp. |
e50aee73 | 302 | */ |
11343788 | 303 | #define CHECKOP(type,o) \ |
ce6f1cbc | 304 | ((PL_op_mask && PL_op_mask[type]) \ |
5dc0d613 | 305 | ? ( op_free((OP*)o), \ |
cb77fdf0 | 306 | Perl_croak(aTHX_ "'%s' trapped by operation mask", PL_op_desc[type]), \ |
ce6f1cbc | 307 | (OP*)0 ) \ |
fc0dc3b3 | 308 | : CALL_FPTR(PL_check[type])(aTHX_ (OP*)o)) |
e50aee73 | 309 | |
e6438c1a | 310 | #define RETURN_UNLIMITED_NUMBER (PERL_INT_MAX / 2) |
c53d7c7d | 311 | |
8b6b16e7 | 312 | STATIC const char* |
cea2e8a9 | 313 | S_gv_ename(pTHX_ GV *gv) |
4633a7c4 | 314 | { |
46c461b5 | 315 | SV* const tmpsv = sv_newmortal(); |
7918f24d NC |
316 | |
317 | PERL_ARGS_ASSERT_GV_ENAME; | |
318 | ||
bd61b366 | 319 | gv_efullname3(tmpsv, gv, NULL); |
8b6b16e7 | 320 | return SvPV_nolen_const(tmpsv); |
4633a7c4 LW |
321 | } |
322 | ||
76e3520e | 323 | STATIC OP * |
cea2e8a9 | 324 | S_no_fh_allowed(pTHX_ OP *o) |
79072805 | 325 | { |
7918f24d NC |
326 | PERL_ARGS_ASSERT_NO_FH_ALLOWED; |
327 | ||
cea2e8a9 | 328 | yyerror(Perl_form(aTHX_ "Missing comma after first argument to %s function", |
53e06cf0 | 329 | OP_DESC(o))); |
11343788 | 330 | return o; |
79072805 LW |
331 | } |
332 | ||
76e3520e | 333 | STATIC OP * |
bfed75c6 | 334 | S_too_few_arguments(pTHX_ OP *o, const char *name) |
79072805 | 335 | { |
7918f24d NC |
336 | PERL_ARGS_ASSERT_TOO_FEW_ARGUMENTS; |
337 | ||
cea2e8a9 | 338 | yyerror(Perl_form(aTHX_ "Not enough arguments for %s", name)); |
11343788 | 339 | return o; |
79072805 LW |
340 | } |
341 | ||
76e3520e | 342 | STATIC OP * |
bfed75c6 | 343 | S_too_many_arguments(pTHX_ OP *o, const char *name) |
79072805 | 344 | { |
7918f24d NC |
345 | PERL_ARGS_ASSERT_TOO_MANY_ARGUMENTS; |
346 | ||
cea2e8a9 | 347 | yyerror(Perl_form(aTHX_ "Too many arguments for %s", name)); |
11343788 | 348 | return o; |
79072805 LW |
349 | } |
350 | ||
76e3520e | 351 | STATIC void |
6867be6d | 352 | S_bad_type(pTHX_ I32 n, const char *t, const char *name, const OP *kid) |
8990e307 | 353 | { |
7918f24d NC |
354 | PERL_ARGS_ASSERT_BAD_TYPE; |
355 | ||
cea2e8a9 | 356 | yyerror(Perl_form(aTHX_ "Type of arg %d to %s must be %s (not %s)", |
53e06cf0 | 357 | (int)n, name, t, OP_DESC(kid))); |
8990e307 LW |
358 | } |
359 | ||
7a52d87a | 360 | STATIC void |
6867be6d | 361 | S_no_bareword_allowed(pTHX_ const OP *o) |
7a52d87a | 362 | { |
7918f24d NC |
363 | PERL_ARGS_ASSERT_NO_BAREWORD_ALLOWED; |
364 | ||
eb8433b7 NC |
365 | if (PL_madskills) |
366 | return; /* various ok barewords are hidden in extra OP_NULL */ | |
5a844595 | 367 | qerror(Perl_mess(aTHX_ |
35c1215d | 368 | "Bareword \"%"SVf"\" not allowed while \"strict subs\" in use", |
be2597df | 369 | SVfARG(cSVOPo_sv))); |
7a52d87a GS |
370 | } |
371 | ||
79072805 LW |
372 | /* "register" allocation */ |
373 | ||
374 | PADOFFSET | |
d6447115 | 375 | Perl_allocmy(pTHX_ const char *const name, const STRLEN len, const U32 flags) |
93a17b20 | 376 | { |
97aff369 | 377 | dVAR; |
a0d0e21e | 378 | PADOFFSET off; |
12bd6ede | 379 | const bool is_our = (PL_parser->in_my == KEY_our); |
a0d0e21e | 380 | |
7918f24d NC |
381 | PERL_ARGS_ASSERT_ALLOCMY; |
382 | ||
d6447115 NC |
383 | if (flags) |
384 | Perl_croak(aTHX_ "panic: allocmy illegal flag bits 0x%" UVxf, | |
385 | (UV)flags); | |
386 | ||
387 | /* Until we're using the length for real, cross check that we're being | |
388 | told the truth. */ | |
389 | assert(strlen(name) == len); | |
390 | ||
59f00321 | 391 | /* complain about "my $<special_var>" etc etc */ |
d6447115 | 392 | if (len && |
3edf23ff | 393 | !(is_our || |
155aba94 | 394 | isALPHA(name[1]) || |
39e02b42 | 395 | (USE_UTF8_IN_NAMES && UTF8_IS_START(name[1])) || |
d6447115 | 396 | (name[1] == '_' && (*name == '$' || len > 2)))) |
834a4ddd | 397 | { |
6b58708b | 398 | /* name[2] is true if strlen(name) > 2 */ |
c4d0567e | 399 | if (!isPRINT(name[1]) || strchr("\t\n\r\f", name[1])) { |
d6447115 NC |
400 | yyerror(Perl_form(aTHX_ "Can't use global %c^%c%.*s in \"%s\"", |
401 | name[0], toCTRL(name[1]), (int)(len - 2), name + 2, | |
aab6a793 | 402 | PL_parser->in_my == KEY_state ? "state" : "my")); |
d1544d85 | 403 | } else { |
d6447115 | 404 | yyerror(Perl_form(aTHX_ "Can't use global %.*s in \"%s\"", (int) len, name, |
aab6a793 | 405 | PL_parser->in_my == KEY_state ? "state" : "my")); |
46fc3d4c | 406 | } |
a0d0e21e | 407 | } |
748a9306 | 408 | |
dd2155a4 | 409 | /* allocate a spare slot and store the name in that slot */ |
93a17b20 | 410 | |
cca43f78 | 411 | off = pad_add_name(name, len, |
59cfed7d NC |
412 | is_our ? padadd_OUR : |
413 | PL_parser->in_my == KEY_state ? padadd_STATE : 0, | |
12bd6ede | 414 | PL_parser->in_my_stash, |
3edf23ff | 415 | (is_our |
133706a6 RGS |
416 | /* $_ is always in main::, even with our */ |
417 | ? (PL_curstash && !strEQ(name,"$_") ? PL_curstash : PL_defstash) | |
5c284bb0 | 418 | : NULL |
cca43f78 | 419 | ) |
dd2155a4 | 420 | ); |
a74073ad DM |
421 | /* anon sub prototypes contains state vars should always be cloned, |
422 | * otherwise the state var would be shared between anon subs */ | |
423 | ||
424 | if (PL_parser->in_my == KEY_state && CvANON(PL_compcv)) | |
425 | CvCLONE_on(PL_compcv); | |
426 | ||
dd2155a4 | 427 | return off; |
79072805 LW |
428 | } |
429 | ||
d2c837a0 DM |
430 | /* free the body of an op without examining its contents. |
431 | * Always use this rather than FreeOp directly */ | |
432 | ||
4136a0f7 | 433 | static void |
d2c837a0 DM |
434 | S_op_destroy(pTHX_ OP *o) |
435 | { | |
436 | if (o->op_latefree) { | |
437 | o->op_latefreed = 1; | |
438 | return; | |
439 | } | |
440 | FreeOp(o); | |
441 | } | |
442 | ||
c4bd3ae5 NC |
443 | #ifdef USE_ITHREADS |
444 | # define forget_pmop(a,b) S_forget_pmop(aTHX_ a,b) | |
445 | #else | |
446 | # define forget_pmop(a,b) S_forget_pmop(aTHX_ a) | |
447 | #endif | |
d2c837a0 | 448 | |
79072805 LW |
449 | /* Destructor */ |
450 | ||
451 | void | |
864dbfa3 | 452 | Perl_op_free(pTHX_ OP *o) |
79072805 | 453 | { |
27da23d5 | 454 | dVAR; |
acb36ea4 | 455 | OPCODE type; |
79072805 | 456 | |
85594c31 | 457 | if (!o) |
79072805 | 458 | return; |
670f3923 DM |
459 | if (o->op_latefreed) { |
460 | if (o->op_latefree) | |
461 | return; | |
462 | goto do_free; | |
463 | } | |
79072805 | 464 | |
67566ccd | 465 | type = o->op_type; |
7934575e | 466 | if (o->op_private & OPpREFCOUNTED) { |
67566ccd | 467 | switch (type) { |
7934575e GS |
468 | case OP_LEAVESUB: |
469 | case OP_LEAVESUBLV: | |
470 | case OP_LEAVEEVAL: | |
471 | case OP_LEAVE: | |
472 | case OP_SCOPE: | |
473 | case OP_LEAVEWRITE: | |
67566ccd AL |
474 | { |
475 | PADOFFSET refcnt; | |
7934575e | 476 | OP_REFCNT_LOCK; |
4026c95a | 477 | refcnt = OpREFCNT_dec(o); |
7934575e | 478 | OP_REFCNT_UNLOCK; |
bfd0ff22 NC |
479 | if (refcnt) { |
480 | /* Need to find and remove any pattern match ops from the list | |
481 | we maintain for reset(). */ | |
482 | find_and_forget_pmops(o); | |
4026c95a | 483 | return; |
67566ccd | 484 | } |
bfd0ff22 | 485 | } |
7934575e GS |
486 | break; |
487 | default: | |
488 | break; | |
489 | } | |
490 | } | |
491 | ||
f37b8c3f VP |
492 | /* Call the op_free hook if it has been set. Do it now so that it's called |
493 | * at the right time for refcounted ops, but still before all of the kids | |
494 | * are freed. */ | |
495 | CALL_OPFREEHOOK(o); | |
496 | ||
11343788 | 497 | if (o->op_flags & OPf_KIDS) { |
6867be6d | 498 | register OP *kid, *nextkid; |
11343788 | 499 | for (kid = cUNOPo->op_first; kid; kid = nextkid) { |
85e6fe83 | 500 | nextkid = kid->op_sibling; /* Get before next freeing kid */ |
79072805 | 501 | op_free(kid); |
85e6fe83 | 502 | } |
79072805 | 503 | } |
acb36ea4 | 504 | |
fc97af9c NC |
505 | #ifdef PERL_DEBUG_READONLY_OPS |
506 | Slab_to_rw(o); | |
507 | #endif | |
508 | ||
acb36ea4 GS |
509 | /* COP* is not cleared by op_clear() so that we may track line |
510 | * numbers etc even after null() */ | |
cc93af5f RGS |
511 | if (type == OP_NEXTSTATE || type == OP_DBSTATE |
512 | || (type == OP_NULL /* the COP might have been null'ed */ | |
513 | && ((OPCODE)o->op_targ == OP_NEXTSTATE | |
514 | || (OPCODE)o->op_targ == OP_DBSTATE))) { | |
acb36ea4 | 515 | cop_free((COP*)o); |
3235b7a3 | 516 | } |
acb36ea4 | 517 | |
c53f1caa RU |
518 | if (type == OP_NULL) |
519 | type = (OPCODE)o->op_targ; | |
520 | ||
acb36ea4 | 521 | op_clear(o); |
670f3923 DM |
522 | if (o->op_latefree) { |
523 | o->op_latefreed = 1; | |
524 | return; | |
525 | } | |
526 | do_free: | |
238a4c30 | 527 | FreeOp(o); |
4d494880 DM |
528 | #ifdef DEBUG_LEAKING_SCALARS |
529 | if (PL_op == o) | |
5f66b61c | 530 | PL_op = NULL; |
4d494880 | 531 | #endif |
acb36ea4 | 532 | } |
79072805 | 533 | |
93c66552 DM |
534 | void |
535 | Perl_op_clear(pTHX_ OP *o) | |
acb36ea4 | 536 | { |
13137afc | 537 | |
27da23d5 | 538 | dVAR; |
7918f24d NC |
539 | |
540 | PERL_ARGS_ASSERT_OP_CLEAR; | |
541 | ||
eb8433b7 NC |
542 | #ifdef PERL_MAD |
543 | /* if (o->op_madprop && o->op_madprop->mad_next) | |
544 | abort(); */ | |
3cc8d589 NC |
545 | /* FIXME for MAD - if I uncomment these two lines t/op/pack.t fails with |
546 | "modification of a read only value" for a reason I can't fathom why. | |
547 | It's the "" stringification of $_, where $_ was set to '' in a foreach | |
04a4d38e NC |
548 | loop, but it defies simplification into a small test case. |
549 | However, commenting them out has caused ext/List/Util/t/weak.t to fail | |
550 | the last test. */ | |
3cc8d589 NC |
551 | /* |
552 | mad_free(o->op_madprop); | |
553 | o->op_madprop = 0; | |
554 | */ | |
eb8433b7 NC |
555 | #endif |
556 | ||
557 | retry: | |
11343788 | 558 | switch (o->op_type) { |
acb36ea4 | 559 | case OP_NULL: /* Was holding old type, if any. */ |
eb8433b7 | 560 | if (PL_madskills && o->op_targ != OP_NULL) { |
61a59f30 | 561 | o->op_type = (Optype)o->op_targ; |
eb8433b7 NC |
562 | o->op_targ = 0; |
563 | goto retry; | |
564 | } | |
4d193d44 | 565 | case OP_ENTERTRY: |
acb36ea4 | 566 | case OP_ENTEREVAL: /* Was holding hints. */ |
acb36ea4 | 567 | o->op_targ = 0; |
a0d0e21e | 568 | break; |
a6006777 | 569 | default: |
ac4c12e7 | 570 | if (!(o->op_flags & OPf_REF) |
0b94c7bb | 571 | || (PL_check[o->op_type] != MEMBER_TO_FPTR(Perl_ck_ftst))) |
a6006777 | 572 | break; |
573 | /* FALL THROUGH */ | |
463ee0b2 | 574 | case OP_GVSV: |
79072805 | 575 | case OP_GV: |
a6006777 | 576 | case OP_AELEMFAST: |
6a077020 DM |
577 | if (! (o->op_type == OP_AELEMFAST && o->op_flags & OPf_SPECIAL)) { |
578 | /* not an OP_PADAV replacement */ | |
f7461760 Z |
579 | GV *gv = (o->op_type == OP_GV || o->op_type == OP_GVSV) |
580 | #ifdef USE_ITHREADS | |
581 | && PL_curpad | |
582 | #endif | |
583 | ? cGVOPo_gv : NULL; | |
b327b36f NC |
584 | /* It's possible during global destruction that the GV is freed |
585 | before the optree. Whilst the SvREFCNT_inc is happy to bump from | |
586 | 0 to 1 on a freed SV, the corresponding SvREFCNT_dec from 1 to 0 | |
587 | will trigger an assertion failure, because the entry to sv_clear | |
588 | checks that the scalar is not already freed. A check of for | |
589 | !SvIS_FREED(gv) turns out to be invalid, because during global | |
590 | destruction the reference count can be forced down to zero | |
591 | (with SVf_BREAK set). In which case raising to 1 and then | |
592 | dropping to 0 triggers cleanup before it should happen. I | |
593 | *think* that this might actually be a general, systematic, | |
594 | weakness of the whole idea of SVf_BREAK, in that code *is* | |
595 | allowed to raise and lower references during global destruction, | |
596 | so any *valid* code that happens to do this during global | |
597 | destruction might well trigger premature cleanup. */ | |
598 | bool still_valid = gv && SvREFCNT(gv); | |
599 | ||
600 | if (still_valid) | |
601 | SvREFCNT_inc_simple_void(gv); | |
350de78d | 602 | #ifdef USE_ITHREADS |
6a077020 DM |
603 | if (cPADOPo->op_padix > 0) { |
604 | /* No GvIN_PAD_off(cGVOPo_gv) here, because other references | |
605 | * may still exist on the pad */ | |
606 | pad_swipe(cPADOPo->op_padix, TRUE); | |
607 | cPADOPo->op_padix = 0; | |
608 | } | |
350de78d | 609 | #else |
6a077020 | 610 | SvREFCNT_dec(cSVOPo->op_sv); |
a0714e2c | 611 | cSVOPo->op_sv = NULL; |
350de78d | 612 | #endif |
b327b36f | 613 | if (still_valid) { |
f7461760 Z |
614 | int try_downgrade = SvREFCNT(gv) == 2; |
615 | SvREFCNT_dec(gv); | |
616 | if (try_downgrade) | |
617 | gv_try_downgrade(gv); | |
618 | } | |
6a077020 | 619 | } |
79072805 | 620 | break; |
a1ae71d2 | 621 | case OP_METHOD_NAMED: |
79072805 | 622 | case OP_CONST: |
996c9baa | 623 | case OP_HINTSEVAL: |
11343788 | 624 | SvREFCNT_dec(cSVOPo->op_sv); |
a0714e2c | 625 | cSVOPo->op_sv = NULL; |
3b1c21fa AB |
626 | #ifdef USE_ITHREADS |
627 | /** Bug #15654 | |
628 | Even if op_clear does a pad_free for the target of the op, | |
6a077020 | 629 | pad_free doesn't actually remove the sv that exists in the pad; |
3b1c21fa AB |
630 | instead it lives on. This results in that it could be reused as |
631 | a target later on when the pad was reallocated. | |
632 | **/ | |
633 | if(o->op_targ) { | |
634 | pad_swipe(o->op_targ,1); | |
635 | o->op_targ = 0; | |
636 | } | |
637 | #endif | |
79072805 | 638 | break; |
748a9306 LW |
639 | case OP_GOTO: |
640 | case OP_NEXT: | |
641 | case OP_LAST: | |
642 | case OP_REDO: | |
11343788 | 643 | if (o->op_flags & (OPf_SPECIAL|OPf_STACKED|OPf_KIDS)) |
748a9306 LW |
644 | break; |
645 | /* FALL THROUGH */ | |
a0d0e21e | 646 | case OP_TRANS: |
acb36ea4 | 647 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { |
043e41b8 DM |
648 | #ifdef USE_ITHREADS |
649 | if (cPADOPo->op_padix > 0) { | |
650 | pad_swipe(cPADOPo->op_padix, TRUE); | |
651 | cPADOPo->op_padix = 0; | |
652 | } | |
653 | #else | |
a0ed51b3 | 654 | SvREFCNT_dec(cSVOPo->op_sv); |
a0714e2c | 655 | cSVOPo->op_sv = NULL; |
043e41b8 | 656 | #endif |
acb36ea4 GS |
657 | } |
658 | else { | |
ea71c68d | 659 | PerlMemShared_free(cPVOPo->op_pv); |
bd61b366 | 660 | cPVOPo->op_pv = NULL; |
acb36ea4 | 661 | } |
a0d0e21e LW |
662 | break; |
663 | case OP_SUBST: | |
20e98b0f | 664 | op_free(cPMOPo->op_pmreplrootu.op_pmreplroot); |
971a9dd3 | 665 | goto clear_pmop; |
748a9306 | 666 | case OP_PUSHRE: |
971a9dd3 | 667 | #ifdef USE_ITHREADS |
20e98b0f | 668 | if (cPMOPo->op_pmreplrootu.op_pmtargetoff) { |
dd2155a4 DM |
669 | /* No GvIN_PAD_off here, because other references may still |
670 | * exist on the pad */ | |
20e98b0f | 671 | pad_swipe(cPMOPo->op_pmreplrootu.op_pmtargetoff, TRUE); |
971a9dd3 GS |
672 | } |
673 | #else | |
ad64d0ec | 674 | SvREFCNT_dec(MUTABLE_SV(cPMOPo->op_pmreplrootu.op_pmtargetgv)); |
971a9dd3 GS |
675 | #endif |
676 | /* FALL THROUGH */ | |
a0d0e21e | 677 | case OP_MATCH: |
8782bef2 | 678 | case OP_QR: |
971a9dd3 | 679 | clear_pmop: |
c2b1997a | 680 | forget_pmop(cPMOPo, 1); |
20e98b0f | 681 | cPMOPo->op_pmreplrootu.op_pmreplroot = NULL; |
9cddf794 NC |
682 | /* we use the same protection as the "SAFE" version of the PM_ macros |
683 | * here since sv_clean_all might release some PMOPs | |
5f8cb046 DM |
684 | * after PL_regex_padav has been cleared |
685 | * and the clearing of PL_regex_padav needs to | |
686 | * happen before sv_clean_all | |
687 | */ | |
13137afc AB |
688 | #ifdef USE_ITHREADS |
689 | if(PL_regex_pad) { /* We could be in destruction */ | |
402d2eb1 | 690 | const IV offset = (cPMOPo)->op_pmoffset; |
9cddf794 | 691 | ReREFCNT_dec(PM_GETRE(cPMOPo)); |
402d2eb1 NC |
692 | PL_regex_pad[offset] = &PL_sv_undef; |
693 | sv_catpvn_nomg(PL_regex_pad[0], (const char *)&offset, | |
694 | sizeof(offset)); | |
13137afc | 695 | } |
9cddf794 NC |
696 | #else |
697 | ReREFCNT_dec(PM_GETRE(cPMOPo)); | |
698 | PM_SETRE(cPMOPo, NULL); | |
1eb1540c | 699 | #endif |
13137afc | 700 | |
a0d0e21e | 701 | break; |
79072805 LW |
702 | } |
703 | ||
743e66e6 | 704 | if (o->op_targ > 0) { |
11343788 | 705 | pad_free(o->op_targ); |
743e66e6 GS |
706 | o->op_targ = 0; |
707 | } | |
79072805 LW |
708 | } |
709 | ||
76e3520e | 710 | STATIC void |
3eb57f73 HS |
711 | S_cop_free(pTHX_ COP* cop) |
712 | { | |
7918f24d NC |
713 | PERL_ARGS_ASSERT_COP_FREE; |
714 | ||
05ec9bb3 NIS |
715 | CopFILE_free(cop); |
716 | CopSTASH_free(cop); | |
0453d815 | 717 | if (! specialWARN(cop->cop_warnings)) |
72dc9ed5 | 718 | PerlMemShared_free(cop->cop_warnings); |
c28fe1ec | 719 | Perl_refcounted_he_free(aTHX_ cop->cop_hints_hash); |
3eb57f73 HS |
720 | } |
721 | ||
c2b1997a | 722 | STATIC void |
c4bd3ae5 NC |
723 | S_forget_pmop(pTHX_ PMOP *const o |
724 | #ifdef USE_ITHREADS | |
725 | , U32 flags | |
726 | #endif | |
727 | ) | |
c2b1997a NC |
728 | { |
729 | HV * const pmstash = PmopSTASH(o); | |
7918f24d NC |
730 | |
731 | PERL_ARGS_ASSERT_FORGET_PMOP; | |
732 | ||
c2b1997a | 733 | if (pmstash && !SvIS_FREED(pmstash)) { |
ad64d0ec | 734 | MAGIC * const mg = mg_find((const SV *)pmstash, PERL_MAGIC_symtab); |
c2b1997a NC |
735 | if (mg) { |
736 | PMOP **const array = (PMOP**) mg->mg_ptr; | |
737 | U32 count = mg->mg_len / sizeof(PMOP**); | |
738 | U32 i = count; | |
739 | ||
740 | while (i--) { | |
741 | if (array[i] == o) { | |
742 | /* Found it. Move the entry at the end to overwrite it. */ | |
743 | array[i] = array[--count]; | |
744 | mg->mg_len = count * sizeof(PMOP**); | |
745 | /* Could realloc smaller at this point always, but probably | |
746 | not worth it. Probably worth free()ing if we're the | |
747 | last. */ | |
748 | if(!count) { | |
749 | Safefree(mg->mg_ptr); | |
750 | mg->mg_ptr = NULL; | |
751 | } | |
752 | break; | |
753 | } | |
754 | } | |
755 | } | |
756 | } | |
1cdf7faf NC |
757 | if (PL_curpm == o) |
758 | PL_curpm = NULL; | |
c4bd3ae5 | 759 | #ifdef USE_ITHREADS |
c2b1997a NC |
760 | if (flags) |
761 | PmopSTASH_free(o); | |
c4bd3ae5 | 762 | #endif |
c2b1997a NC |
763 | } |
764 | ||
bfd0ff22 NC |
765 | STATIC void |
766 | S_find_and_forget_pmops(pTHX_ OP *o) | |
767 | { | |
7918f24d NC |
768 | PERL_ARGS_ASSERT_FIND_AND_FORGET_PMOPS; |
769 | ||
bfd0ff22 NC |
770 | if (o->op_flags & OPf_KIDS) { |
771 | OP *kid = cUNOPo->op_first; | |
772 | while (kid) { | |
773 | switch (kid->op_type) { | |
774 | case OP_SUBST: | |
775 | case OP_PUSHRE: | |
776 | case OP_MATCH: | |
777 | case OP_QR: | |
778 | forget_pmop((PMOP*)kid, 0); | |
779 | } | |
780 | find_and_forget_pmops(kid); | |
781 | kid = kid->op_sibling; | |
782 | } | |
783 | } | |
784 | } | |
785 | ||
93c66552 DM |
786 | void |
787 | Perl_op_null(pTHX_ OP *o) | |
8990e307 | 788 | { |
27da23d5 | 789 | dVAR; |
7918f24d NC |
790 | |
791 | PERL_ARGS_ASSERT_OP_NULL; | |
792 | ||
acb36ea4 GS |
793 | if (o->op_type == OP_NULL) |
794 | return; | |
eb8433b7 NC |
795 | if (!PL_madskills) |
796 | op_clear(o); | |
11343788 MB |
797 | o->op_targ = o->op_type; |
798 | o->op_type = OP_NULL; | |
22c35a8c | 799 | o->op_ppaddr = PL_ppaddr[OP_NULL]; |
8990e307 LW |
800 | } |
801 | ||
4026c95a SH |
802 | void |
803 | Perl_op_refcnt_lock(pTHX) | |
804 | { | |
27da23d5 | 805 | dVAR; |
96a5add6 | 806 | PERL_UNUSED_CONTEXT; |
4026c95a SH |
807 | OP_REFCNT_LOCK; |
808 | } | |
809 | ||
810 | void | |
811 | Perl_op_refcnt_unlock(pTHX) | |
812 | { | |
27da23d5 | 813 | dVAR; |
96a5add6 | 814 | PERL_UNUSED_CONTEXT; |
4026c95a SH |
815 | OP_REFCNT_UNLOCK; |
816 | } | |
817 | ||
79072805 LW |
818 | /* Contextualizers */ |
819 | ||
463ee0b2 | 820 | #define LINKLIST(o) ((o)->op_next ? (o)->op_next : linklist((OP*)o)) |
79072805 | 821 | |
1f676739 | 822 | static OP * |
12e93c28 | 823 | S_linklist(pTHX_ OP *o) |
79072805 | 824 | { |
3edf23ff | 825 | OP *first; |
79072805 | 826 | |
7918f24d NC |
827 | PERL_ARGS_ASSERT_LINKLIST; |
828 | ||
11343788 MB |
829 | if (o->op_next) |
830 | return o->op_next; | |
79072805 LW |
831 | |
832 | /* establish postfix order */ | |
3edf23ff AL |
833 | first = cUNOPo->op_first; |
834 | if (first) { | |
6867be6d | 835 | register OP *kid; |
3edf23ff AL |
836 | o->op_next = LINKLIST(first); |
837 | kid = first; | |
838 | for (;;) { | |
839 | if (kid->op_sibling) { | |
79072805 | 840 | kid->op_next = LINKLIST(kid->op_sibling); |
3edf23ff AL |
841 | kid = kid->op_sibling; |
842 | } else { | |
11343788 | 843 | kid->op_next = o; |
3edf23ff AL |
844 | break; |
845 | } | |
79072805 LW |
846 | } |
847 | } | |
848 | else | |
11343788 | 849 | o->op_next = o; |
79072805 | 850 | |
11343788 | 851 | return o->op_next; |
79072805 LW |
852 | } |
853 | ||
1f676739 | 854 | static OP * |
2dd5337b | 855 | S_scalarkids(pTHX_ OP *o) |
79072805 | 856 | { |
11343788 | 857 | if (o && o->op_flags & OPf_KIDS) { |
bfed75c6 | 858 | OP *kid; |
11343788 | 859 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
860 | scalar(kid); |
861 | } | |
11343788 | 862 | return o; |
79072805 LW |
863 | } |
864 | ||
76e3520e | 865 | STATIC OP * |
cea2e8a9 | 866 | S_scalarboolean(pTHX_ OP *o) |
8990e307 | 867 | { |
97aff369 | 868 | dVAR; |
7918f24d NC |
869 | |
870 | PERL_ARGS_ASSERT_SCALARBOOLEAN; | |
871 | ||
d008e5eb | 872 | if (o->op_type == OP_SASSIGN && cBINOPo->op_first->op_type == OP_CONST) { |
d008e5eb | 873 | if (ckWARN(WARN_SYNTAX)) { |
6867be6d | 874 | const line_t oldline = CopLINE(PL_curcop); |
a0d0e21e | 875 | |
53a7735b DM |
876 | if (PL_parser && PL_parser->copline != NOLINE) |
877 | CopLINE_set(PL_curcop, PL_parser->copline); | |
9014280d | 878 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Found = in conditional, should be =="); |
57843af0 | 879 | CopLINE_set(PL_curcop, oldline); |
d008e5eb | 880 | } |
a0d0e21e | 881 | } |
11343788 | 882 | return scalar(o); |
8990e307 LW |
883 | } |
884 | ||
885 | OP * | |
864dbfa3 | 886 | Perl_scalar(pTHX_ OP *o) |
79072805 | 887 | { |
27da23d5 | 888 | dVAR; |
79072805 LW |
889 | OP *kid; |
890 | ||
a0d0e21e | 891 | /* assumes no premature commitment */ |
13765c85 DM |
892 | if (!o || (PL_parser && PL_parser->error_count) |
893 | || (o->op_flags & OPf_WANT) | |
5dc0d613 | 894 | || o->op_type == OP_RETURN) |
7e363e51 | 895 | { |
11343788 | 896 | return o; |
7e363e51 | 897 | } |
79072805 | 898 | |
5dc0d613 | 899 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_SCALAR; |
79072805 | 900 | |
11343788 | 901 | switch (o->op_type) { |
79072805 | 902 | case OP_REPEAT: |
11343788 | 903 | scalar(cBINOPo->op_first); |
8990e307 | 904 | break; |
79072805 LW |
905 | case OP_OR: |
906 | case OP_AND: | |
907 | case OP_COND_EXPR: | |
11343788 | 908 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
8990e307 | 909 | scalar(kid); |
79072805 | 910 | break; |
a0d0e21e | 911 | /* FALL THROUGH */ |
a6d8037e | 912 | case OP_SPLIT: |
79072805 | 913 | case OP_MATCH: |
8782bef2 | 914 | case OP_QR: |
79072805 LW |
915 | case OP_SUBST: |
916 | case OP_NULL: | |
8990e307 | 917 | default: |
11343788 MB |
918 | if (o->op_flags & OPf_KIDS) { |
919 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) | |
8990e307 LW |
920 | scalar(kid); |
921 | } | |
79072805 LW |
922 | break; |
923 | case OP_LEAVE: | |
924 | case OP_LEAVETRY: | |
5dc0d613 | 925 | kid = cLISTOPo->op_first; |
54310121 | 926 | scalar(kid); |
155aba94 | 927 | while ((kid = kid->op_sibling)) { |
54310121 | 928 | if (kid->op_sibling) |
929 | scalarvoid(kid); | |
930 | else | |
931 | scalar(kid); | |
932 | } | |
11206fdd | 933 | PL_curcop = &PL_compiling; |
54310121 | 934 | break; |
748a9306 | 935 | case OP_SCOPE: |
79072805 | 936 | case OP_LINESEQ: |
8990e307 | 937 | case OP_LIST: |
11343788 | 938 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
939 | if (kid->op_sibling) |
940 | scalarvoid(kid); | |
941 | else | |
942 | scalar(kid); | |
943 | } | |
11206fdd | 944 | PL_curcop = &PL_compiling; |
79072805 | 945 | break; |
a801c63c | 946 | case OP_SORT: |
a2a5de95 | 947 | Perl_ck_warner(aTHX_ packWARN(WARN_VOID), "Useless use of sort in scalar context"); |
553e7bb0 | 948 | break; |
79072805 | 949 | } |
11343788 | 950 | return o; |
79072805 LW |
951 | } |
952 | ||
953 | OP * | |
864dbfa3 | 954 | Perl_scalarvoid(pTHX_ OP *o) |
79072805 | 955 | { |
27da23d5 | 956 | dVAR; |
79072805 | 957 | OP *kid; |
c445ea15 | 958 | const char* useless = NULL; |
8990e307 | 959 | SV* sv; |
2ebea0a1 GS |
960 | U8 want; |
961 | ||
7918f24d NC |
962 | PERL_ARGS_ASSERT_SCALARVOID; |
963 | ||
eb8433b7 NC |
964 | /* trailing mad null ops don't count as "there" for void processing */ |
965 | if (PL_madskills && | |
966 | o->op_type != OP_NULL && | |
967 | o->op_sibling && | |
968 | o->op_sibling->op_type == OP_NULL) | |
969 | { | |
970 | OP *sib; | |
971 | for (sib = o->op_sibling; | |
972 | sib && sib->op_type == OP_NULL; | |
973 | sib = sib->op_sibling) ; | |
974 | ||
975 | if (!sib) | |
976 | return o; | |
977 | } | |
978 | ||
acb36ea4 | 979 | if (o->op_type == OP_NEXTSTATE |
acb36ea4 GS |
980 | || o->op_type == OP_DBSTATE |
981 | || (o->op_type == OP_NULL && (o->op_targ == OP_NEXTSTATE | |
acb36ea4 | 982 | || o->op_targ == OP_DBSTATE))) |
2ebea0a1 | 983 | PL_curcop = (COP*)o; /* for warning below */ |
79072805 | 984 | |
54310121 | 985 | /* assumes no premature commitment */ |
2ebea0a1 | 986 | want = o->op_flags & OPf_WANT; |
13765c85 DM |
987 | if ((want && want != OPf_WANT_SCALAR) |
988 | || (PL_parser && PL_parser->error_count) | |
021f53de | 989 | || o->op_type == OP_RETURN || o->op_type == OP_REQUIRE) |
7e363e51 | 990 | { |
11343788 | 991 | return o; |
7e363e51 | 992 | } |
79072805 | 993 | |
b162f9ea | 994 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
995 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
996 | { | |
b162f9ea | 997 | return scalar(o); /* As if inside SASSIGN */ |
7e363e51 | 998 | } |
1c846c1f | 999 | |
5dc0d613 | 1000 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_VOID; |
79072805 | 1001 | |
11343788 | 1002 | switch (o->op_type) { |
79072805 | 1003 | default: |
22c35a8c | 1004 | if (!(PL_opargs[o->op_type] & OA_FOLDCONST)) |
8990e307 | 1005 | break; |
36477c24 | 1006 | /* FALL THROUGH */ |
1007 | case OP_REPEAT: | |
11343788 | 1008 | if (o->op_flags & OPf_STACKED) |
8990e307 | 1009 | break; |
5d82c453 GA |
1010 | goto func_ops; |
1011 | case OP_SUBSTR: | |
1012 | if (o->op_private == 4) | |
1013 | break; | |
8990e307 LW |
1014 | /* FALL THROUGH */ |
1015 | case OP_GVSV: | |
1016 | case OP_WANTARRAY: | |
1017 | case OP_GV: | |
74295f0b | 1018 | case OP_SMARTMATCH: |
8990e307 LW |
1019 | case OP_PADSV: |
1020 | case OP_PADAV: | |
1021 | case OP_PADHV: | |
1022 | case OP_PADANY: | |
1023 | case OP_AV2ARYLEN: | |
8990e307 | 1024 | case OP_REF: |
a0d0e21e LW |
1025 | case OP_REFGEN: |
1026 | case OP_SREFGEN: | |
8990e307 LW |
1027 | case OP_DEFINED: |
1028 | case OP_HEX: | |
1029 | case OP_OCT: | |
1030 | case OP_LENGTH: | |
8990e307 LW |
1031 | case OP_VEC: |
1032 | case OP_INDEX: | |
1033 | case OP_RINDEX: | |
1034 | case OP_SPRINTF: | |
1035 | case OP_AELEM: | |
1036 | case OP_AELEMFAST: | |
1037 | case OP_ASLICE: | |
8990e307 LW |
1038 | case OP_HELEM: |
1039 | case OP_HSLICE: | |
1040 | case OP_UNPACK: | |
1041 | case OP_PACK: | |
8990e307 LW |
1042 | case OP_JOIN: |
1043 | case OP_LSLICE: | |
1044 | case OP_ANONLIST: | |
1045 | case OP_ANONHASH: | |
1046 | case OP_SORT: | |
1047 | case OP_REVERSE: | |
1048 | case OP_RANGE: | |
1049 | case OP_FLIP: | |
1050 | case OP_FLOP: | |
1051 | case OP_CALLER: | |
1052 | case OP_FILENO: | |
1053 | case OP_EOF: | |
1054 | case OP_TELL: | |
1055 | case OP_GETSOCKNAME: | |
1056 | case OP_GETPEERNAME: | |
1057 | case OP_READLINK: | |
1058 | case OP_TELLDIR: | |
1059 | case OP_GETPPID: | |
1060 | case OP_GETPGRP: | |
1061 | case OP_GETPRIORITY: | |
1062 | case OP_TIME: | |
1063 | case OP_TMS: | |
1064 | case OP_LOCALTIME: | |
1065 | case OP_GMTIME: | |
1066 | case OP_GHBYNAME: | |
1067 | case OP_GHBYADDR: | |
1068 | case OP_GHOSTENT: | |
1069 | case OP_GNBYNAME: | |
1070 | case OP_GNBYADDR: | |
1071 | case OP_GNETENT: | |
1072 | case OP_GPBYNAME: | |
1073 | case OP_GPBYNUMBER: | |
1074 | case OP_GPROTOENT: | |
1075 | case OP_GSBYNAME: | |
1076 | case OP_GSBYPORT: | |
1077 | case OP_GSERVENT: | |
1078 | case OP_GPWNAM: | |
1079 | case OP_GPWUID: | |
1080 | case OP_GGRNAM: | |
1081 | case OP_GGRGID: | |
1082 | case OP_GETLOGIN: | |
78e1b766 | 1083 | case OP_PROTOTYPE: |
5d82c453 | 1084 | func_ops: |
64aac5a9 | 1085 | if (!(o->op_private & (OPpLVAL_INTRO|OPpOUR_INTRO))) |
74295f0b | 1086 | /* Otherwise it's "Useless use of grep iterator" */ |
f5df4782 | 1087 | useless = OP_DESC(o); |
75068674 RGS |
1088 | break; |
1089 | ||
1090 | case OP_SPLIT: | |
1091 | kid = cLISTOPo->op_first; | |
1092 | if (kid && kid->op_type == OP_PUSHRE | |
1093 | #ifdef USE_ITHREADS | |
1094 | && !((PMOP*)kid)->op_pmreplrootu.op_pmtargetoff) | |
1095 | #else | |
1096 | && !((PMOP*)kid)->op_pmreplrootu.op_pmtargetgv) | |
1097 | #endif | |
1098 | useless = OP_DESC(o); | |
8990e307 LW |
1099 | break; |
1100 | ||
9f82cd5f YST |
1101 | case OP_NOT: |
1102 | kid = cUNOPo->op_first; | |
1103 | if (kid->op_type != OP_MATCH && kid->op_type != OP_SUBST && | |
1104 | kid->op_type != OP_TRANS) { | |
1105 | goto func_ops; | |
1106 | } | |
1107 | useless = "negative pattern binding (!~)"; | |
1108 | break; | |
1109 | ||
8990e307 LW |
1110 | case OP_RV2GV: |
1111 | case OP_RV2SV: | |
1112 | case OP_RV2AV: | |
1113 | case OP_RV2HV: | |
192587c2 | 1114 | if (!(o->op_private & (OPpLVAL_INTRO|OPpOUR_INTRO)) && |
11343788 | 1115 | (!o->op_sibling || o->op_sibling->op_type != OP_READLINE)) |
8990e307 LW |
1116 | useless = "a variable"; |
1117 | break; | |
79072805 LW |
1118 | |
1119 | case OP_CONST: | |
7766f137 | 1120 | sv = cSVOPo_sv; |
7a52d87a GS |
1121 | if (cSVOPo->op_private & OPpCONST_STRICT) |
1122 | no_bareword_allowed(o); | |
1123 | else { | |
d008e5eb | 1124 | if (ckWARN(WARN_VOID)) { |
fa01e093 RGS |
1125 | if (SvOK(sv)) { |
1126 | SV* msv = sv_2mortal(Perl_newSVpvf(aTHX_ | |
1127 | "a constant (%"SVf")", sv)); | |
1128 | useless = SvPV_nolen(msv); | |
1129 | } | |
1130 | else | |
1131 | useless = "a constant (undef)"; | |
2e0ae2d3 | 1132 | if (o->op_private & OPpCONST_ARYBASE) |
d4c19fe8 | 1133 | useless = NULL; |
e7fec78e | 1134 | /* don't warn on optimised away booleans, eg |
b5a930ec | 1135 | * use constant Foo, 5; Foo || print; */ |
e7fec78e | 1136 | if (cSVOPo->op_private & OPpCONST_SHORTCIRCUIT) |
d4c19fe8 | 1137 | useless = NULL; |
960b4253 MG |
1138 | /* the constants 0 and 1 are permitted as they are |
1139 | conventionally used as dummies in constructs like | |
1140 | 1 while some_condition_with_side_effects; */ | |
e7fec78e | 1141 | else if (SvNIOK(sv) && (SvNV(sv) == 0.0 || SvNV(sv) == 1.0)) |
d4c19fe8 | 1142 | useless = NULL; |
d008e5eb | 1143 | else if (SvPOK(sv)) { |
a52fe3ac A |
1144 | /* perl4's way of mixing documentation and code |
1145 | (before the invention of POD) was based on a | |
1146 | trick to mix nroff and perl code. The trick was | |
1147 | built upon these three nroff macros being used in | |
1148 | void context. The pink camel has the details in | |
1149 | the script wrapman near page 319. */ | |
6136c704 AL |
1150 | const char * const maybe_macro = SvPVX_const(sv); |
1151 | if (strnEQ(maybe_macro, "di", 2) || | |
1152 | strnEQ(maybe_macro, "ds", 2) || | |
1153 | strnEQ(maybe_macro, "ig", 2)) | |
d4c19fe8 | 1154 | useless = NULL; |
d008e5eb | 1155 | } |
8990e307 LW |
1156 | } |
1157 | } | |
93c66552 | 1158 | op_null(o); /* don't execute or even remember it */ |
79072805 LW |
1159 | break; |
1160 | ||
1161 | case OP_POSTINC: | |
11343788 | 1162 | o->op_type = OP_PREINC; /* pre-increment is faster */ |
22c35a8c | 1163 | o->op_ppaddr = PL_ppaddr[OP_PREINC]; |
79072805 LW |
1164 | break; |
1165 | ||
1166 | case OP_POSTDEC: | |
11343788 | 1167 | o->op_type = OP_PREDEC; /* pre-decrement is faster */ |
22c35a8c | 1168 | o->op_ppaddr = PL_ppaddr[OP_PREDEC]; |
79072805 LW |
1169 | break; |
1170 | ||
679d6c4e HS |
1171 | case OP_I_POSTINC: |
1172 | o->op_type = OP_I_PREINC; /* pre-increment is faster */ | |
1173 | o->op_ppaddr = PL_ppaddr[OP_I_PREINC]; | |
1174 | break; | |
1175 | ||
1176 | case OP_I_POSTDEC: | |
1177 | o->op_type = OP_I_PREDEC; /* pre-decrement is faster */ | |
1178 | o->op_ppaddr = PL_ppaddr[OP_I_PREDEC]; | |
1179 | break; | |
1180 | ||
79072805 LW |
1181 | case OP_OR: |
1182 | case OP_AND: | |
edbe35ea VP |
1183 | kid = cLOGOPo->op_first; |
1184 | if (kid->op_type == OP_NOT | |
1185 | && (kid->op_flags & OPf_KIDS) | |
1186 | && !PL_madskills) { | |
1187 | if (o->op_type == OP_AND) { | |
1188 | o->op_type = OP_OR; | |
1189 | o->op_ppaddr = PL_ppaddr[OP_OR]; | |
1190 | } else { | |
1191 | o->op_type = OP_AND; | |
1192 | o->op_ppaddr = PL_ppaddr[OP_AND]; | |
1193 | } | |
1194 | op_null(kid); | |
1195 | } | |
1196 | ||
c963b151 | 1197 | case OP_DOR: |
79072805 | 1198 | case OP_COND_EXPR: |
0d863452 RH |
1199 | case OP_ENTERGIVEN: |
1200 | case OP_ENTERWHEN: | |
11343788 | 1201 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
1202 | scalarvoid(kid); |
1203 | break; | |
5aabfad6 | 1204 | |
a0d0e21e | 1205 | case OP_NULL: |
11343788 | 1206 | if (o->op_flags & OPf_STACKED) |
a0d0e21e | 1207 | break; |
5aabfad6 | 1208 | /* FALL THROUGH */ |
2ebea0a1 GS |
1209 | case OP_NEXTSTATE: |
1210 | case OP_DBSTATE: | |
79072805 LW |
1211 | case OP_ENTERTRY: |
1212 | case OP_ENTER: | |
11343788 | 1213 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1214 | break; |
54310121 | 1215 | /* FALL THROUGH */ |
463ee0b2 | 1216 | case OP_SCOPE: |
79072805 LW |
1217 | case OP_LEAVE: |
1218 | case OP_LEAVETRY: | |
a0d0e21e | 1219 | case OP_LEAVELOOP: |
79072805 | 1220 | case OP_LINESEQ: |
79072805 | 1221 | case OP_LIST: |
0d863452 RH |
1222 | case OP_LEAVEGIVEN: |
1223 | case OP_LEAVEWHEN: | |
11343788 | 1224 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
1225 | scalarvoid(kid); |
1226 | break; | |
c90c0ff4 | 1227 | case OP_ENTEREVAL: |
5196be3e | 1228 | scalarkids(o); |
c90c0ff4 | 1229 | break; |
d6483035 | 1230 | case OP_SCALAR: |
5196be3e | 1231 | return scalar(o); |
79072805 | 1232 | } |
a2a5de95 NC |
1233 | if (useless) |
1234 | Perl_ck_warner(aTHX_ packWARN(WARN_VOID), "Useless use of %s in void context", useless); | |
11343788 | 1235 | return o; |
79072805 LW |
1236 | } |
1237 | ||
1f676739 | 1238 | static OP * |
412da003 | 1239 | S_listkids(pTHX_ OP *o) |
79072805 | 1240 | { |
11343788 | 1241 | if (o && o->op_flags & OPf_KIDS) { |
6867be6d | 1242 | OP *kid; |
11343788 | 1243 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
1244 | list(kid); |
1245 | } | |
11343788 | 1246 | return o; |
79072805 LW |
1247 | } |
1248 | ||
1249 | OP * | |
864dbfa3 | 1250 | Perl_list(pTHX_ OP *o) |
79072805 | 1251 | { |
27da23d5 | 1252 | dVAR; |
79072805 LW |
1253 | OP *kid; |
1254 | ||
a0d0e21e | 1255 | /* assumes no premature commitment */ |
13765c85 DM |
1256 | if (!o || (o->op_flags & OPf_WANT) |
1257 | || (PL_parser && PL_parser->error_count) | |
5dc0d613 | 1258 | || o->op_type == OP_RETURN) |
7e363e51 | 1259 | { |
11343788 | 1260 | return o; |
7e363e51 | 1261 | } |
79072805 | 1262 | |
b162f9ea | 1263 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
1264 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
1265 | { | |
b162f9ea | 1266 | return o; /* As if inside SASSIGN */ |
7e363e51 | 1267 | } |
1c846c1f | 1268 | |
5dc0d613 | 1269 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_LIST; |
79072805 | 1270 | |
11343788 | 1271 | switch (o->op_type) { |
79072805 LW |
1272 | case OP_FLOP: |
1273 | case OP_REPEAT: | |
11343788 | 1274 | list(cBINOPo->op_first); |
79072805 LW |
1275 | break; |
1276 | case OP_OR: | |
1277 | case OP_AND: | |
1278 | case OP_COND_EXPR: | |
11343788 | 1279 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
1280 | list(kid); |
1281 | break; | |
1282 | default: | |
1283 | case OP_MATCH: | |
8782bef2 | 1284 | case OP_QR: |
79072805 LW |
1285 | case OP_SUBST: |
1286 | case OP_NULL: | |
11343788 | 1287 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1288 | break; |
11343788 MB |
1289 | if (!o->op_next && cUNOPo->op_first->op_type == OP_FLOP) { |
1290 | list(cBINOPo->op_first); | |
1291 | return gen_constant_list(o); | |
79072805 LW |
1292 | } |
1293 | case OP_LIST: | |
11343788 | 1294 | listkids(o); |
79072805 LW |
1295 | break; |
1296 | case OP_LEAVE: | |
1297 | case OP_LEAVETRY: | |
5dc0d613 | 1298 | kid = cLISTOPo->op_first; |
54310121 | 1299 | list(kid); |
155aba94 | 1300 | while ((kid = kid->op_sibling)) { |
54310121 | 1301 | if (kid->op_sibling) |
1302 | scalarvoid(kid); | |
1303 | else | |
1304 | list(kid); | |
1305 | } | |
11206fdd | 1306 | PL_curcop = &PL_compiling; |
54310121 | 1307 | break; |
748a9306 | 1308 | case OP_SCOPE: |
79072805 | 1309 | case OP_LINESEQ: |
11343788 | 1310 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
1311 | if (kid->op_sibling) |
1312 | scalarvoid(kid); | |
1313 | else | |
1314 | list(kid); | |
1315 | } | |
11206fdd | 1316 | PL_curcop = &PL_compiling; |
79072805 LW |
1317 | break; |
1318 | } | |
11343788 | 1319 | return o; |
79072805 LW |
1320 | } |
1321 | ||
1f676739 | 1322 | static OP * |
2dd5337b | 1323 | S_scalarseq(pTHX_ OP *o) |
79072805 | 1324 | { |
97aff369 | 1325 | dVAR; |
11343788 | 1326 | if (o) { |
1496a290 AL |
1327 | const OPCODE type = o->op_type; |
1328 | ||
1329 | if (type == OP_LINESEQ || type == OP_SCOPE || | |
1330 | type == OP_LEAVE || type == OP_LEAVETRY) | |
463ee0b2 | 1331 | { |
6867be6d | 1332 | OP *kid; |
11343788 | 1333 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
ed6116ce | 1334 | if (kid->op_sibling) { |
463ee0b2 | 1335 | scalarvoid(kid); |
ed6116ce | 1336 | } |
463ee0b2 | 1337 | } |
3280af22 | 1338 | PL_curcop = &PL_compiling; |
79072805 | 1339 | } |
11343788 | 1340 | o->op_flags &= ~OPf_PARENS; |
3280af22 | 1341 | if (PL_hints & HINT_BLOCK_SCOPE) |
11343788 | 1342 | o->op_flags |= OPf_PARENS; |
79072805 | 1343 | } |
8990e307 | 1344 | else |
11343788 MB |
1345 | o = newOP(OP_STUB, 0); |
1346 | return o; | |
79072805 LW |
1347 | } |
1348 | ||
76e3520e | 1349 | STATIC OP * |
cea2e8a9 | 1350 | S_modkids(pTHX_ OP *o, I32 type) |
79072805 | 1351 | { |
11343788 | 1352 | if (o && o->op_flags & OPf_KIDS) { |
6867be6d | 1353 | OP *kid; |
11343788 | 1354 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 | 1355 | mod(kid, type); |
79072805 | 1356 | } |
11343788 | 1357 | return o; |
79072805 LW |
1358 | } |
1359 | ||
ff7298cb | 1360 | /* Propagate lvalue ("modifiable") context to an op and its children. |
ddeae0f1 DM |
1361 | * 'type' represents the context type, roughly based on the type of op that |
1362 | * would do the modifying, although local() is represented by OP_NULL. | |
1363 | * It's responsible for detecting things that can't be modified, flag | |
1364 | * things that need to behave specially in an lvalue context (e.g., "$$x = 5" | |
1365 | * might have to vivify a reference in $x), and so on. | |
1366 | * | |
1367 | * For example, "$a+1 = 2" would cause mod() to be called with o being | |
1368 | * OP_ADD and type being OP_SASSIGN, and would output an error. | |
1369 | */ | |
1370 | ||
79072805 | 1371 | OP * |
864dbfa3 | 1372 | Perl_mod(pTHX_ OP *o, I32 type) |
79072805 | 1373 | { |
27da23d5 | 1374 | dVAR; |
79072805 | 1375 | OP *kid; |
ddeae0f1 DM |
1376 | /* -1 = error on localize, 0 = ignore localize, 1 = ok to localize */ |
1377 | int localize = -1; | |
79072805 | 1378 | |
13765c85 | 1379 | if (!o || (PL_parser && PL_parser->error_count)) |
11343788 | 1380 | return o; |
79072805 | 1381 | |
b162f9ea | 1382 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
1383 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
1384 | { | |
b162f9ea | 1385 | return o; |
7e363e51 | 1386 | } |
1c846c1f | 1387 | |
11343788 | 1388 | switch (o->op_type) { |
68dc0745 | 1389 | case OP_UNDEF: |
ddeae0f1 | 1390 | localize = 0; |
3280af22 | 1391 | PL_modcount++; |
5dc0d613 | 1392 | return o; |
a0d0e21e | 1393 | case OP_CONST: |
2e0ae2d3 | 1394 | if (!(o->op_private & OPpCONST_ARYBASE)) |
a0d0e21e | 1395 | goto nomod; |
54dc0f91 | 1396 | localize = 0; |
3280af22 | 1397 | if (PL_eval_start && PL_eval_start->op_type == OP_CONST) { |
fc15ae8f NC |
1398 | CopARYBASE_set(&PL_compiling, |
1399 | (I32)SvIV(cSVOPx(PL_eval_start)->op_sv)); | |
3280af22 | 1400 | PL_eval_start = 0; |
a0d0e21e LW |
1401 | } |
1402 | else if (!type) { | |
fc15ae8f NC |
1403 | SAVECOPARYBASE(&PL_compiling); |
1404 | CopARYBASE_set(&PL_compiling, 0); | |
a0d0e21e LW |
1405 | } |
1406 | else if (type == OP_REFGEN) | |
1407 | goto nomod; | |
1408 | else | |
cea2e8a9 | 1409 | Perl_croak(aTHX_ "That use of $[ is unsupported"); |
a0d0e21e | 1410 | break; |
5f05dabc | 1411 | case OP_STUB: |
58bde88d | 1412 | if ((o->op_flags & OPf_PARENS) || PL_madskills) |
5f05dabc | 1413 | break; |
1414 | goto nomod; | |
a0d0e21e LW |
1415 | case OP_ENTERSUB: |
1416 | if ((type == OP_UNDEF || type == OP_REFGEN) && | |
11343788 MB |
1417 | !(o->op_flags & OPf_STACKED)) { |
1418 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
e26df76a NC |
1419 | /* The default is to set op_private to the number of children, |
1420 | which for a UNOP such as RV2CV is always 1. And w're using | |
1421 | the bit for a flag in RV2CV, so we need it clear. */ | |
1422 | o->op_private &= ~1; | |
22c35a8c | 1423 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 | 1424 | assert(cUNOPo->op_first->op_type == OP_NULL); |
93c66552 | 1425 | op_null(((LISTOP*)cUNOPo->op_first)->op_first);/* disable pushmark */ |
79072805 LW |
1426 | break; |
1427 | } | |
95f0a2f1 SB |
1428 | else if (o->op_private & OPpENTERSUB_NOMOD) |
1429 | return o; | |
cd06dffe GS |
1430 | else { /* lvalue subroutine call */ |
1431 | o->op_private |= OPpLVAL_INTRO; | |
e6438c1a | 1432 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
4978d6d9 | 1433 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) { |
cd06dffe GS |
1434 | /* Backward compatibility mode: */ |
1435 | o->op_private |= OPpENTERSUB_INARGS; | |
1436 | break; | |
1437 | } | |
1438 | else { /* Compile-time error message: */ | |
1439 | OP *kid = cUNOPo->op_first; | |
1440 | CV *cv; | |
1441 | OP *okid; | |
1442 | ||
3ea285d1 AL |
1443 | if (kid->op_type != OP_PUSHMARK) { |
1444 | if (kid->op_type != OP_NULL || kid->op_targ != OP_LIST) | |
1445 | Perl_croak(aTHX_ | |
1446 | "panic: unexpected lvalue entersub " | |
1447 | "args: type/targ %ld:%"UVuf, | |
1448 | (long)kid->op_type, (UV)kid->op_targ); | |
1449 | kid = kLISTOP->op_first; | |
1450 | } | |
cd06dffe GS |
1451 | while (kid->op_sibling) |
1452 | kid = kid->op_sibling; | |
1453 | if (!(kid->op_type == OP_NULL && kid->op_targ == OP_RV2CV)) { | |
1454 | /* Indirect call */ | |
1455 | if (kid->op_type == OP_METHOD_NAMED | |
1456 | || kid->op_type == OP_METHOD) | |
1457 | { | |
87d7fd28 | 1458 | UNOP *newop; |
b2ffa427 | 1459 | |
87d7fd28 | 1460 | NewOp(1101, newop, 1, UNOP); |
349fd7b7 GS |
1461 | newop->op_type = OP_RV2CV; |
1462 | newop->op_ppaddr = PL_ppaddr[OP_RV2CV]; | |
5f66b61c | 1463 | newop->op_first = NULL; |
87d7fd28 GS |
1464 | newop->op_next = (OP*)newop; |
1465 | kid->op_sibling = (OP*)newop; | |
349fd7b7 | 1466 | newop->op_private |= OPpLVAL_INTRO; |
e26df76a | 1467 | newop->op_private &= ~1; |
cd06dffe GS |
1468 | break; |
1469 | } | |
b2ffa427 | 1470 | |
cd06dffe GS |
1471 | if (kid->op_type != OP_RV2CV) |
1472 | Perl_croak(aTHX_ | |
1473 | "panic: unexpected lvalue entersub " | |
55140b79 | 1474 | "entry via type/targ %ld:%"UVuf, |
3d811634 | 1475 | (long)kid->op_type, (UV)kid->op_targ); |
cd06dffe GS |
1476 | kid->op_private |= OPpLVAL_INTRO; |
1477 | break; /* Postpone until runtime */ | |
1478 | } | |
b2ffa427 NIS |
1479 | |
1480 | okid = kid; | |
cd06dffe GS |
1481 | kid = kUNOP->op_first; |
1482 | if (kid->op_type == OP_NULL && kid->op_targ == OP_RV2SV) | |
1483 | kid = kUNOP->op_first; | |
b2ffa427 | 1484 | if (kid->op_type == OP_NULL) |
cd06dffe GS |
1485 | Perl_croak(aTHX_ |
1486 | "Unexpected constant lvalue entersub " | |
55140b79 | 1487 | "entry via type/targ %ld:%"UVuf, |
3d811634 | 1488 | (long)kid->op_type, (UV)kid->op_targ); |
cd06dffe GS |
1489 | if (kid->op_type != OP_GV) { |
1490 | /* Restore RV2CV to check lvalueness */ | |
1491 | restore_2cv: | |
1492 | if (kid->op_next && kid->op_next != kid) { /* Happens? */ | |
1493 | okid->op_next = kid->op_next; | |
1494 | kid->op_next = okid; | |
1495 | } | |
1496 | else | |
5f66b61c | 1497 | okid->op_next = NULL; |
cd06dffe GS |
1498 | okid->op_type = OP_RV2CV; |
1499 | okid->op_targ = 0; | |
1500 | okid->op_ppaddr = PL_ppaddr[OP_RV2CV]; | |
1501 | okid->op_private |= OPpLVAL_INTRO; | |
e26df76a | 1502 | okid->op_private &= ~1; |
cd06dffe GS |
1503 | break; |
1504 | } | |
b2ffa427 | 1505 | |
638eceb6 | 1506 | cv = GvCV(kGVOP_gv); |
1c846c1f | 1507 | if (!cv) |
cd06dffe GS |
1508 | goto restore_2cv; |
1509 | if (CvLVALUE(cv)) | |
1510 | break; | |
1511 | } | |
1512 | } | |
79072805 LW |
1513 | /* FALL THROUGH */ |
1514 | default: | |
a0d0e21e | 1515 | nomod: |
6fbb66d6 NC |
1516 | /* grep, foreach, subcalls, refgen */ |
1517 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) | |
a0d0e21e | 1518 | break; |
cea2e8a9 | 1519 | yyerror(Perl_form(aTHX_ "Can't modify %s in %s", |
638bc118 | 1520 | (o->op_type == OP_NULL && (o->op_flags & OPf_SPECIAL) |
cd06dffe GS |
1521 | ? "do block" |
1522 | : (o->op_type == OP_ENTERSUB | |
1523 | ? "non-lvalue subroutine call" | |
53e06cf0 | 1524 | : OP_DESC(o))), |
22c35a8c | 1525 | type ? PL_op_desc[type] : "local")); |
11343788 | 1526 | return o; |
79072805 | 1527 | |
a0d0e21e LW |
1528 | case OP_PREINC: |
1529 | case OP_PREDEC: | |
1530 | case OP_POW: | |
1531 | case OP_MULTIPLY: | |
1532 | case OP_DIVIDE: | |
1533 | case OP_MODULO: | |
1534 | case OP_REPEAT: | |
1535 | case OP_ADD: | |
1536 | case OP_SUBTRACT: | |
1537 | case OP_CONCAT: | |
1538 | case OP_LEFT_SHIFT: | |
1539 | case OP_RIGHT_SHIFT: | |
1540 | case OP_BIT_AND: | |
1541 | case OP_BIT_XOR: | |
1542 | case OP_BIT_OR: | |
1543 | case OP_I_MULTIPLY: | |
1544 | case OP_I_DIVIDE: | |
1545 | case OP_I_MODULO: | |
1546 | case OP_I_ADD: | |
1547 | case OP_I_SUBTRACT: | |
11343788 | 1548 | if (!(o->op_flags & OPf_STACKED)) |
a0d0e21e | 1549 | goto nomod; |
3280af22 | 1550 | PL_modcount++; |
a0d0e21e | 1551 | break; |
b2ffa427 | 1552 | |
79072805 | 1553 | case OP_COND_EXPR: |
ddeae0f1 | 1554 | localize = 1; |
11343788 | 1555 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 | 1556 | mod(kid, type); |
79072805 LW |
1557 | break; |
1558 | ||
1559 | case OP_RV2AV: | |
1560 | case OP_RV2HV: | |
11343788 | 1561 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) { |
e6438c1a | 1562 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
11343788 | 1563 | return o; /* Treat \(@foo) like ordinary list. */ |
748a9306 LW |
1564 | } |
1565 | /* FALL THROUGH */ | |
79072805 | 1566 | case OP_RV2GV: |
5dc0d613 | 1567 | if (scalar_mod_type(o, type)) |
3fe9a6f1 | 1568 | goto nomod; |
11343788 | 1569 | ref(cUNOPo->op_first, o->op_type); |
79072805 | 1570 | /* FALL THROUGH */ |
79072805 LW |
1571 | case OP_ASLICE: |
1572 | case OP_HSLICE: | |
78f9721b SM |
1573 | if (type == OP_LEAVESUBLV) |
1574 | o->op_private |= OPpMAYBE_LVSUB; | |
ddeae0f1 | 1575 | localize = 1; |
78f9721b SM |
1576 | /* FALL THROUGH */ |
1577 | case OP_AASSIGN: | |
93a17b20 LW |
1578 | case OP_NEXTSTATE: |
1579 | case OP_DBSTATE: | |
e6438c1a | 1580 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
79072805 | 1581 | break; |
28c5b5bc RGS |
1582 | case OP_AV2ARYLEN: |
1583 | PL_hints |= HINT_BLOCK_SCOPE; | |
1584 | if (type == OP_LEAVESUBLV) | |
1585 | o->op_private |= OPpMAYBE_LVSUB; | |
1586 | PL_modcount++; | |
1587 | break; | |
463ee0b2 | 1588 | case OP_RV2SV: |
aeea060c | 1589 | ref(cUNOPo->op_first, o->op_type); |
ddeae0f1 | 1590 | localize = 1; |
463ee0b2 | 1591 | /* FALL THROUGH */ |
79072805 | 1592 | case OP_GV: |
3280af22 | 1593 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 1594 | case OP_SASSIGN: |
bf4b1e52 GS |
1595 | case OP_ANDASSIGN: |
1596 | case OP_ORASSIGN: | |
c963b151 | 1597 | case OP_DORASSIGN: |
ddeae0f1 DM |
1598 | PL_modcount++; |
1599 | break; | |
1600 | ||
8990e307 | 1601 | case OP_AELEMFAST: |
6a077020 | 1602 | localize = -1; |
3280af22 | 1603 | PL_modcount++; |
8990e307 LW |
1604 | break; |
1605 | ||
748a9306 LW |
1606 | case OP_PADAV: |
1607 | case OP_PADHV: | |
e6438c1a | 1608 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
5196be3e MB |
1609 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) |
1610 | return o; /* Treat \(@foo) like ordinary list. */ | |
1611 | if (scalar_mod_type(o, type)) | |
3fe9a6f1 | 1612 | goto nomod; |
78f9721b SM |
1613 | if (type == OP_LEAVESUBLV) |
1614 | o->op_private |= OPpMAYBE_LVSUB; | |
748a9306 LW |
1615 | /* FALL THROUGH */ |
1616 | case OP_PADSV: | |
3280af22 | 1617 | PL_modcount++; |
ddeae0f1 | 1618 | if (!type) /* local() */ |
cea2e8a9 | 1619 | Perl_croak(aTHX_ "Can't localize lexical variable %s", |
dd2155a4 | 1620 | PAD_COMPNAME_PV(o->op_targ)); |
463ee0b2 LW |
1621 | break; |
1622 | ||
748a9306 | 1623 | case OP_PUSHMARK: |
ddeae0f1 | 1624 | localize = 0; |
748a9306 | 1625 | break; |
b2ffa427 | 1626 | |
69969c6f SB |
1627 | case OP_KEYS: |
1628 | if (type != OP_SASSIGN) | |
1629 | goto nomod; | |
5d82c453 GA |
1630 | goto lvalue_func; |
1631 | case OP_SUBSTR: | |
1632 | if (o->op_private == 4) /* don't allow 4 arg substr as lvalue */ | |
1633 | goto nomod; | |
5f05dabc | 1634 | /* FALL THROUGH */ |
a0d0e21e | 1635 | case OP_POS: |
463ee0b2 | 1636 | case OP_VEC: |
78f9721b SM |
1637 | if (type == OP_LEAVESUBLV) |
1638 | o->op_private |= OPpMAYBE_LVSUB; | |
5d82c453 | 1639 | lvalue_func: |
11343788 MB |
1640 | pad_free(o->op_targ); |
1641 | o->op_targ = pad_alloc(o->op_type, SVs_PADMY); | |
5dc0d613 | 1642 | assert(SvTYPE(PAD_SV(o->op_targ)) == SVt_NULL); |
11343788 MB |
1643 | if (o->op_flags & OPf_KIDS) |
1644 | mod(cBINOPo->op_first->op_sibling, type); | |
463ee0b2 | 1645 | break; |
a0d0e21e | 1646 | |
463ee0b2 LW |
1647 | case OP_AELEM: |
1648 | case OP_HELEM: | |
11343788 | 1649 | ref(cBINOPo->op_first, o->op_type); |
68dc0745 | 1650 | if (type == OP_ENTERSUB && |
5dc0d613 MB |
1651 | !(o->op_private & (OPpLVAL_INTRO | OPpDEREF))) |
1652 | o->op_private |= OPpLVAL_DEFER; | |
78f9721b SM |
1653 | if (type == OP_LEAVESUBLV) |
1654 | o->op_private |= OPpMAYBE_LVSUB; | |
ddeae0f1 | 1655 | localize = 1; |
3280af22 | 1656 | PL_modcount++; |
463ee0b2 LW |
1657 | break; |
1658 | ||
1659 | case OP_SCOPE: | |
1660 | case OP_LEAVE: | |
1661 | case OP_ENTER: | |
78f9721b | 1662 | case OP_LINESEQ: |
ddeae0f1 | 1663 | localize = 0; |
11343788 MB |
1664 | if (o->op_flags & OPf_KIDS) |
1665 | mod(cLISTOPo->op_last, type); | |
a0d0e21e LW |
1666 | break; |
1667 | ||
1668 | case OP_NULL: | |
ddeae0f1 | 1669 | localize = 0; |
638bc118 GS |
1670 | if (o->op_flags & OPf_SPECIAL) /* do BLOCK */ |
1671 | goto nomod; | |
1672 | else if (!(o->op_flags & OPf_KIDS)) | |
463ee0b2 | 1673 | break; |
11343788 MB |
1674 | if (o->op_targ != OP_LIST) { |
1675 | mod(cBINOPo->op_first, type); | |
a0d0e21e LW |
1676 | break; |
1677 | } | |
1678 | /* FALL THROUGH */ | |
463ee0b2 | 1679 | case OP_LIST: |
ddeae0f1 | 1680 | localize = 0; |
11343788 | 1681 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1682 | mod(kid, type); |
1683 | break; | |
78f9721b SM |
1684 | |
1685 | case OP_RETURN: | |
1686 | if (type != OP_LEAVESUBLV) | |
1687 | goto nomod; | |
1688 | break; /* mod()ing was handled by ck_return() */ | |
463ee0b2 | 1689 | } |
58d95175 | 1690 | |
8be1be90 AMS |
1691 | /* [20011101.069] File test operators interpret OPf_REF to mean that |
1692 | their argument is a filehandle; thus \stat(".") should not set | |
1693 | it. AMS 20011102 */ | |
1694 | if (type == OP_REFGEN && | |
1695 | PL_check[o->op_type] == MEMBER_TO_FPTR(Perl_ck_ftst)) | |
1696 | return o; | |
1697 | ||
1698 | if (type != OP_LEAVESUBLV) | |
1699 | o->op_flags |= OPf_MOD; | |
1700 | ||
1701 | if (type == OP_AASSIGN || type == OP_SASSIGN) | |
1702 | o->op_flags |= OPf_SPECIAL|OPf_REF; | |
ddeae0f1 DM |
1703 | else if (!type) { /* local() */ |
1704 | switch (localize) { | |
1705 | case 1: | |
1706 | o->op_private |= OPpLVAL_INTRO; | |
1707 | o->op_flags &= ~OPf_SPECIAL; | |
1708 | PL_hints |= HINT_BLOCK_SCOPE; | |
1709 | break; | |
1710 | case 0: | |
1711 | break; | |
1712 | case -1: | |
a2a5de95 NC |
1713 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), |
1714 | "Useless localization of %s", OP_DESC(o)); | |
ddeae0f1 | 1715 | } |
463ee0b2 | 1716 | } |
8be1be90 AMS |
1717 | else if (type != OP_GREPSTART && type != OP_ENTERSUB |
1718 | && type != OP_LEAVESUBLV) | |
1719 | o->op_flags |= OPf_REF; | |
11343788 | 1720 | return o; |
463ee0b2 LW |
1721 | } |
1722 | ||
864dbfa3 | 1723 | STATIC bool |
5f66b61c | 1724 | S_scalar_mod_type(const OP *o, I32 type) |
3fe9a6f1 | 1725 | { |
7918f24d NC |
1726 | PERL_ARGS_ASSERT_SCALAR_MOD_TYPE; |
1727 | ||
3fe9a6f1 | 1728 | switch (type) { |
1729 | case OP_SASSIGN: | |
5196be3e | 1730 | if (o->op_type == OP_RV2GV) |
3fe9a6f1 | 1731 | return FALSE; |
1732 | /* FALL THROUGH */ | |
1733 | case OP_PREINC: | |
1734 | case OP_PREDEC: | |
1735 | case OP_POSTINC: | |
1736 | case OP_POSTDEC: | |
1737 | case OP_I_PREINC: | |
1738 | case OP_I_PREDEC: | |
1739 | case OP_I_POSTINC: | |
1740 | case OP_I_POSTDEC: | |
1741 | case OP_POW: | |
1742 | case OP_MULTIPLY: | |
1743 | case OP_DIVIDE: | |
1744 | case OP_MODULO: | |
1745 | case OP_REPEAT: | |
1746 | case OP_ADD: | |
1747 | case OP_SUBTRACT: | |
1748 | case OP_I_MULTIPLY: | |
1749 | case OP_I_DIVIDE: | |
1750 | case OP_I_MODULO: | |
1751 | case OP_I_ADD: | |
1752 | case OP_I_SUBTRACT: | |
1753 | case OP_LEFT_SHIFT: | |
1754 | case OP_RIGHT_SHIFT: | |
1755 | case OP_BIT_AND: | |
1756 | case OP_BIT_XOR: | |
1757 | case OP_BIT_OR: | |
1758 | case OP_CONCAT: | |
1759 | case OP_SUBST: | |
1760 | case OP_TRANS: | |
49e9fbe6 GS |
1761 | case OP_READ: |
1762 | case OP_SYSREAD: | |
1763 | case OP_RECV: | |
bf4b1e52 GS |
1764 | case OP_ANDASSIGN: |
1765 | case OP_ORASSIGN: | |
410d09fe | 1766 | case OP_DORASSIGN: |
3fe9a6f1 | 1767 | return TRUE; |
1768 | default: | |
1769 | return FALSE; | |
1770 | } | |
1771 | } | |
1772 | ||
35cd451c | 1773 | STATIC bool |
5f66b61c | 1774 | S_is_handle_constructor(const OP *o, I32 numargs) |
35cd451c | 1775 | { |
7918f24d NC |
1776 | PERL_ARGS_ASSERT_IS_HANDLE_CONSTRUCTOR; |
1777 | ||
35cd451c GS |
1778 | switch (o->op_type) { |
1779 | case OP_PIPE_OP: | |
1780 | case OP_SOCKPAIR: | |
504618e9 | 1781 | if (numargs == 2) |
35cd451c GS |
1782 | return TRUE; |
1783 | /* FALL THROUGH */ | |
1784 | case OP_SYSOPEN: | |
1785 | case OP_OPEN: | |
ded8aa31 | 1786 | case OP_SELECT: /* XXX c.f. SelectSaver.pm */ |
35cd451c GS |
1787 | case OP_SOCKET: |
1788 | case OP_OPEN_DIR: | |
1789 | case OP_ACCEPT: | |
504618e9 | 1790 | if (numargs == 1) |
35cd451c | 1791 | return TRUE; |
5f66b61c | 1792 | /* FALLTHROUGH */ |
35cd451c GS |
1793 | default: |
1794 | return FALSE; | |
1795 | } | |
1796 | } | |
1797 | ||
0d86688d NC |
1798 | static OP * |
1799 | S_refkids(pTHX_ OP *o, I32 type) | |
463ee0b2 | 1800 | { |
11343788 | 1801 | if (o && o->op_flags & OPf_KIDS) { |
6867be6d | 1802 | OP *kid; |
11343788 | 1803 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1804 | ref(kid, type); |
1805 | } | |
11343788 | 1806 | return o; |
463ee0b2 LW |
1807 | } |
1808 | ||
1809 | OP * | |
e4c5ccf3 | 1810 | Perl_doref(pTHX_ OP *o, I32 type, bool set_op_ref) |
463ee0b2 | 1811 | { |
27da23d5 | 1812 | dVAR; |
463ee0b2 | 1813 | OP *kid; |
463ee0b2 | 1814 | |
7918f24d NC |
1815 | PERL_ARGS_ASSERT_DOREF; |
1816 | ||
13765c85 | 1817 | if (!o || (PL_parser && PL_parser->error_count)) |
11343788 | 1818 | return o; |
463ee0b2 | 1819 | |
11343788 | 1820 | switch (o->op_type) { |
a0d0e21e | 1821 | case OP_ENTERSUB: |
afebc493 | 1822 | if ((type == OP_EXISTS || type == OP_DEFINED || type == OP_LOCK) && |
11343788 MB |
1823 | !(o->op_flags & OPf_STACKED)) { |
1824 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
22c35a8c | 1825 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 | 1826 | assert(cUNOPo->op_first->op_type == OP_NULL); |
93c66552 | 1827 | op_null(((LISTOP*)cUNOPo->op_first)->op_first); /* disable pushmark */ |
11343788 | 1828 | o->op_flags |= OPf_SPECIAL; |
e26df76a | 1829 | o->op_private &= ~1; |
8990e307 LW |
1830 | } |
1831 | break; | |
aeea060c | 1832 | |
463ee0b2 | 1833 | case OP_COND_EXPR: |
11343788 | 1834 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
e4c5ccf3 | 1835 | doref(kid, type, set_op_ref); |
463ee0b2 | 1836 | break; |
8990e307 | 1837 | case OP_RV2SV: |
35cd451c GS |
1838 | if (type == OP_DEFINED) |
1839 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
e4c5ccf3 | 1840 | doref(cUNOPo->op_first, o->op_type, set_op_ref); |
4633a7c4 LW |
1841 | /* FALL THROUGH */ |
1842 | case OP_PADSV: | |
5f05dabc | 1843 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1844 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1845 | : type == OP_RV2HV ? OPpDEREF_HV | |
1846 | : OPpDEREF_SV); | |
11343788 | 1847 | o->op_flags |= OPf_MOD; |
a0d0e21e | 1848 | } |
8990e307 | 1849 | break; |
1c846c1f | 1850 | |
463ee0b2 LW |
1851 | case OP_RV2AV: |
1852 | case OP_RV2HV: | |
e4c5ccf3 RH |
1853 | if (set_op_ref) |
1854 | o->op_flags |= OPf_REF; | |
8990e307 | 1855 | /* FALL THROUGH */ |
463ee0b2 | 1856 | case OP_RV2GV: |
35cd451c GS |
1857 | if (type == OP_DEFINED) |
1858 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
e4c5ccf3 | 1859 | doref(cUNOPo->op_first, o->op_type, set_op_ref); |
463ee0b2 | 1860 | break; |
8990e307 | 1861 | |
463ee0b2 LW |
1862 | case OP_PADAV: |
1863 | case OP_PADHV: | |
e4c5ccf3 RH |
1864 | if (set_op_ref) |
1865 | o->op_flags |= OPf_REF; | |
79072805 | 1866 | break; |
aeea060c | 1867 | |
8990e307 | 1868 | case OP_SCALAR: |
79072805 | 1869 | case OP_NULL: |
11343788 | 1870 | if (!(o->op_flags & OPf_KIDS)) |
463ee0b2 | 1871 | break; |
e4c5ccf3 | 1872 | doref(cBINOPo->op_first, type, set_op_ref); |
79072805 LW |
1873 | break; |
1874 | case OP_AELEM: | |
1875 | case OP_HELEM: | |
e4c5ccf3 | 1876 | doref(cBINOPo->op_first, o->op_type, set_op_ref); |
5f05dabc | 1877 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1878 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1879 | : type == OP_RV2HV ? OPpDEREF_HV | |
1880 | : OPpDEREF_SV); | |
11343788 | 1881 | o->op_flags |= OPf_MOD; |
8990e307 | 1882 | } |
79072805 LW |
1883 | break; |
1884 | ||
463ee0b2 | 1885 | case OP_SCOPE: |
79072805 | 1886 | case OP_LEAVE: |
e4c5ccf3 RH |
1887 | set_op_ref = FALSE; |
1888 | /* FALL THROUGH */ | |
79072805 | 1889 | case OP_ENTER: |
8990e307 | 1890 | case OP_LIST: |
11343788 | 1891 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1892 | break; |
e4c5ccf3 | 1893 | doref(cLISTOPo->op_last, type, set_op_ref); |
79072805 | 1894 | break; |
a0d0e21e LW |
1895 | default: |
1896 | break; | |
79072805 | 1897 | } |
11343788 | 1898 | return scalar(o); |
8990e307 | 1899 | |
79072805 LW |
1900 | } |
1901 | ||
09bef843 SB |
1902 | STATIC OP * |
1903 | S_dup_attrlist(pTHX_ OP *o) | |
1904 | { | |
97aff369 | 1905 | dVAR; |
0bd48802 | 1906 | OP *rop; |
09bef843 | 1907 | |
7918f24d NC |
1908 | PERL_ARGS_ASSERT_DUP_ATTRLIST; |
1909 | ||
09bef843 SB |
1910 | /* An attrlist is either a simple OP_CONST or an OP_LIST with kids, |
1911 | * where the first kid is OP_PUSHMARK and the remaining ones | |
1912 | * are OP_CONST. We need to push the OP_CONST values. | |
1913 | */ | |
1914 | if (o->op_type == OP_CONST) | |
b37c2d43 | 1915 | rop = newSVOP(OP_CONST, o->op_flags, SvREFCNT_inc_NN(cSVOPo->op_sv)); |
eb8433b7 NC |
1916 | #ifdef PERL_MAD |
1917 | else if (o->op_type == OP_NULL) | |
1d866c12 | 1918 | rop = NULL; |
eb8433b7 | 1919 | #endif |
09bef843 SB |
1920 | else { |
1921 | assert((o->op_type == OP_LIST) && (o->op_flags & OPf_KIDS)); | |
5f66b61c | 1922 | rop = NULL; |
09bef843 SB |
1923 | for (o = cLISTOPo->op_first; o; o=o->op_sibling) { |
1924 | if (o->op_type == OP_CONST) | |
1925 | rop = append_elem(OP_LIST, rop, | |
1926 | newSVOP(OP_CONST, o->op_flags, | |
b37c2d43 | 1927 | SvREFCNT_inc_NN(cSVOPo->op_sv))); |
09bef843 SB |
1928 | } |
1929 | } | |
1930 | return rop; | |
1931 | } | |
1932 | ||
1933 | STATIC void | |
95f0a2f1 | 1934 | S_apply_attrs(pTHX_ HV *stash, SV *target, OP *attrs, bool for_my) |
09bef843 | 1935 | { |
27da23d5 | 1936 | dVAR; |
09bef843 SB |
1937 | SV *stashsv; |
1938 | ||
7918f24d NC |
1939 | PERL_ARGS_ASSERT_APPLY_ATTRS; |
1940 | ||
09bef843 SB |
1941 | /* fake up C<use attributes $pkg,$rv,@attrs> */ |
1942 | ENTER; /* need to protect against side-effects of 'use' */ | |
5aaec2b4 | 1943 | stashsv = stash ? newSVhek(HvNAME_HEK(stash)) : &PL_sv_no; |
e4783991 | 1944 | |
09bef843 | 1945 | #define ATTRSMODULE "attributes" |
95f0a2f1 SB |
1946 | #define ATTRSMODULE_PM "attributes.pm" |
1947 | ||
1948 | if (for_my) { | |
95f0a2f1 | 1949 | /* Don't force the C<use> if we don't need it. */ |
a4fc7abc | 1950 | SV * const * const svp = hv_fetchs(GvHVn(PL_incgv), ATTRSMODULE_PM, FALSE); |
95f0a2f1 | 1951 | if (svp && *svp != &PL_sv_undef) |
6f207bd3 | 1952 | NOOP; /* already in %INC */ |
95f0a2f1 SB |
1953 | else |
1954 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, | |
6136c704 | 1955 | newSVpvs(ATTRSMODULE), NULL); |
95f0a2f1 SB |
1956 | } |
1957 | else { | |
1958 | Perl_load_module(aTHX_ PERL_LOADMOD_IMPORT_OPS, | |
6136c704 AL |
1959 | newSVpvs(ATTRSMODULE), |
1960 | NULL, | |
95f0a2f1 SB |
1961 | prepend_elem(OP_LIST, |
1962 | newSVOP(OP_CONST, 0, stashsv), | |
1963 | prepend_elem(OP_LIST, | |
1964 | newSVOP(OP_CONST, 0, | |
1965 | newRV(target)), | |
1966 | dup_attrlist(attrs)))); | |
1967 | } | |
09bef843 SB |
1968 | LEAVE; |
1969 | } | |
1970 | ||
95f0a2f1 SB |
1971 | STATIC void |
1972 | S_apply_attrs_my(pTHX_ HV *stash, OP *target, OP *attrs, OP **imopsp) | |
1973 | { | |
97aff369 | 1974 | dVAR; |
95f0a2f1 SB |
1975 | OP *pack, *imop, *arg; |
1976 | SV *meth, *stashsv; | |
1977 | ||
7918f24d NC |
1978 | PERL_ARGS_ASSERT_APPLY_ATTRS_MY; |
1979 | ||
95f0a2f1 SB |
1980 | if (!attrs) |
1981 | return; | |
1982 | ||
1983 | assert(target->op_type == OP_PADSV || | |
1984 | target->op_type == OP_PADHV || | |
1985 | target->op_type == OP_PADAV); | |
1986 | ||
1987 | /* Ensure that attributes.pm is loaded. */ | |
dd2155a4 | 1988 | apply_attrs(stash, PAD_SV(target->op_targ), attrs, TRUE); |
95f0a2f1 SB |
1989 | |
1990 | /* Need package name for method call. */ | |
6136c704 | 1991 | pack = newSVOP(OP_CONST, 0, newSVpvs(ATTRSMODULE)); |
95f0a2f1 SB |
1992 | |
1993 | /* Build up the real arg-list. */ | |
5aaec2b4 NC |
1994 | stashsv = stash ? newSVhek(HvNAME_HEK(stash)) : &PL_sv_no; |
1995 | ||
95f0a2f1 SB |
1996 | arg = newOP(OP_PADSV, 0); |
1997 | arg->op_targ = target->op_targ; | |
1998 | arg = prepend_elem(OP_LIST, | |
1999 | newSVOP(OP_CONST, 0, stashsv), | |
2000 | prepend_elem(OP_LIST, | |
2001 | newUNOP(OP_REFGEN, 0, | |
2002 | mod(arg, OP_REFGEN)), | |
2003 | dup_attrlist(attrs))); | |
2004 | ||
2005 | /* Fake up a method call to import */ | |
18916d0d | 2006 | meth = newSVpvs_share("import"); |
95f0a2f1 SB |
2007 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL|OPf_WANT_VOID, |
2008 | append_elem(OP_LIST, | |
2009 | prepend_elem(OP_LIST, pack, list(arg)), | |
2010 | newSVOP(OP_METHOD_NAMED, 0, meth))); | |
2011 | imop->op_private |= OPpENTERSUB_NOMOD; | |
2012 | ||
2013 | /* Combine the ops. */ | |
2014 | *imopsp = append_elem(OP_LIST, *imopsp, imop); | |
2015 | } | |
2016 | ||
2017 | /* | |
2018 | =notfor apidoc apply_attrs_string | |
2019 | ||
2020 | Attempts to apply a list of attributes specified by the C<attrstr> and | |
2021 | C<len> arguments to the subroutine identified by the C<cv> argument which | |
2022 | is expected to be associated with the package identified by the C<stashpv> | |
2023 | argument (see L<attributes>). It gets this wrong, though, in that it | |
2024 | does not correctly identify the boundaries of the individual attribute | |
2025 | specifications within C<attrstr>. This is not really intended for the | |
2026 | public API, but has to be listed here for systems such as AIX which | |
2027 | need an explicit export list for symbols. (It's called from XS code | |
2028 | in support of the C<ATTRS:> keyword from F<xsubpp>.) Patches to fix it | |
2029 | to respect attribute syntax properly would be welcome. | |
2030 | ||
2031 | =cut | |
2032 | */ | |
2033 | ||
be3174d2 | 2034 | void |
6867be6d AL |
2035 | Perl_apply_attrs_string(pTHX_ const char *stashpv, CV *cv, |
2036 | const char *attrstr, STRLEN len) | |
be3174d2 | 2037 | { |
5f66b61c | 2038 | OP *attrs = NULL; |
be3174d2 | 2039 | |
7918f24d NC |
2040 | PERL_ARGS_ASSERT_APPLY_ATTRS_STRING; |
2041 | ||
be3174d2 GS |
2042 | if (!len) { |
2043 | len = strlen(attrstr); | |
2044 | } | |
2045 | ||
2046 | while (len) { | |
2047 | for (; isSPACE(*attrstr) && len; --len, ++attrstr) ; | |
2048 | if (len) { | |
890ce7af | 2049 | const char * const sstr = attrstr; |
be3174d2 GS |
2050 | for (; !isSPACE(*attrstr) && len; --len, ++attrstr) ; |
2051 | attrs = append_elem(OP_LIST, attrs, | |
2052 | newSVOP(OP_CONST, 0, | |
2053 | newSVpvn(sstr, attrstr-sstr))); | |
2054 | } | |
2055 | } | |
2056 | ||
2057 | Perl_load_module(aTHX_ PERL_LOADMOD_IMPORT_OPS, | |
6136c704 | 2058 | newSVpvs(ATTRSMODULE), |
a0714e2c | 2059 | NULL, prepend_elem(OP_LIST, |
be3174d2 GS |
2060 | newSVOP(OP_CONST, 0, newSVpv(stashpv,0)), |
2061 | prepend_elem(OP_LIST, | |
2062 | newSVOP(OP_CONST, 0, | |
ad64d0ec | 2063 | newRV(MUTABLE_SV(cv))), |
be3174d2 GS |
2064 | attrs))); |
2065 | } | |
2066 | ||
09bef843 | 2067 | STATIC OP * |
95f0a2f1 | 2068 | S_my_kid(pTHX_ OP *o, OP *attrs, OP **imopsp) |
93a17b20 | 2069 | { |
97aff369 | 2070 | dVAR; |
93a17b20 LW |
2071 | I32 type; |
2072 | ||
7918f24d NC |
2073 | PERL_ARGS_ASSERT_MY_KID; |
2074 | ||
13765c85 | 2075 | if (!o || (PL_parser && PL_parser->error_count)) |
11343788 | 2076 | return o; |
93a17b20 | 2077 | |
bc61e325 | 2078 | type = o->op_type; |
eb8433b7 NC |
2079 | if (PL_madskills && type == OP_NULL && o->op_flags & OPf_KIDS) { |
2080 | (void)my_kid(cUNOPo->op_first, attrs, imopsp); | |
2081 | return o; | |
2082 | } | |
2083 | ||
93a17b20 | 2084 | if (type == OP_LIST) { |
6867be6d | 2085 | OP *kid; |
11343788 | 2086 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
95f0a2f1 | 2087 | my_kid(kid, attrs, imopsp); |
eb8433b7 NC |
2088 | } else if (type == OP_UNDEF |
2089 | #ifdef PERL_MAD | |
2090 | || type == OP_STUB | |
2091 | #endif | |
2092 | ) { | |
7766148a | 2093 | return o; |
77ca0c92 LW |
2094 | } else if (type == OP_RV2SV || /* "our" declaration */ |
2095 | type == OP_RV2AV || | |
2096 | type == OP_RV2HV) { /* XXX does this let anything illegal in? */ | |
1ce0b88c | 2097 | if (cUNOPo->op_first->op_type != OP_GV) { /* MJD 20011224 */ |
fab01b8e | 2098 | yyerror(Perl_form(aTHX_ "Can't declare %s in \"%s\"", |
952306ac | 2099 | OP_DESC(o), |
12bd6ede DM |
2100 | PL_parser->in_my == KEY_our |
2101 | ? "our" | |
2102 | : PL_parser->in_my == KEY_state ? "state" : "my")); | |
1ce0b88c | 2103 | } else if (attrs) { |
551405c4 | 2104 | GV * const gv = cGVOPx_gv(cUNOPo->op_first); |
12bd6ede DM |
2105 | PL_parser->in_my = FALSE; |
2106 | PL_parser->in_my_stash = NULL; | |
1ce0b88c RGS |
2107 | apply_attrs(GvSTASH(gv), |
2108 | (type == OP_RV2SV ? GvSV(gv) : | |
ad64d0ec NC |
2109 | type == OP_RV2AV ? MUTABLE_SV(GvAV(gv)) : |
2110 | type == OP_RV2HV ? MUTABLE_SV(GvHV(gv)) : MUTABLE_SV(gv)), | |
1ce0b88c RGS |
2111 | attrs, FALSE); |
2112 | } | |
192587c2 | 2113 | o->op_private |= OPpOUR_INTRO; |
77ca0c92 | 2114 | return o; |
95f0a2f1 SB |
2115 | } |
2116 | else if (type != OP_PADSV && | |
93a17b20 LW |
2117 | type != OP_PADAV && |
2118 | type != OP_PADHV && | |
2119 | type != OP_PUSHMARK) | |
2120 | { | |
eb64745e | 2121 | yyerror(Perl_form(aTHX_ "Can't declare %s in \"%s\"", |
53e06cf0 | 2122 | OP_DESC(o), |
12bd6ede DM |
2123 | PL_parser->in_my == KEY_our |
2124 | ? "our" | |
2125 | : PL_parser->in_my == KEY_state ? "state" : "my")); | |
11343788 | 2126 | return o; |
93a17b20 | 2127 | } |
09bef843 SB |
2128 | else if (attrs && type != OP_PUSHMARK) { |
2129 | HV *stash; | |
09bef843 | 2130 | |
12bd6ede DM |
2131 | PL_parser->in_my = FALSE; |
2132 | PL_parser->in_my_stash = NULL; | |
eb64745e | 2133 | |
09bef843 | 2134 | /* check for C<my Dog $spot> when deciding package */ |
dd2155a4 DM |
2135 | stash = PAD_COMPNAME_TYPE(o->op_targ); |
2136 | if (!stash) | |
09bef843 | 2137 | stash = PL_curstash; |
95f0a2f1 | 2138 | apply_attrs_my(stash, o, attrs, imopsp); |
09bef843 | 2139 | } |
11343788 MB |
2140 | o->op_flags |= OPf_MOD; |
2141 | o->op_private |= OPpLVAL_INTRO; | |
12bd6ede | 2142 | if (PL_parser->in_my == KEY_state) |
952306ac | 2143 | o->op_private |= OPpPAD_STATE; |
11343788 | 2144 | return o; |
93a17b20 LW |
2145 | } |
2146 | ||
2147 | OP * | |
09bef843 SB |
2148 | Perl_my_attrs(pTHX_ OP *o, OP *attrs) |
2149 | { | |
97aff369 | 2150 | dVAR; |
0bd48802 | 2151 | OP *rops; |
95f0a2f1 SB |
2152 | int maybe_scalar = 0; |
2153 | ||
7918f24d NC |
2154 | PERL_ARGS_ASSERT_MY_ATTRS; |
2155 | ||
d2be0de5 | 2156 | /* [perl #17376]: this appears to be premature, and results in code such as |
c754c3d7 | 2157 | C< our(%x); > executing in list mode rather than void mode */ |
d2be0de5 | 2158 | #if 0 |
09bef843 SB |
2159 | if (o->op_flags & OPf_PARENS) |
2160 | list(o); | |
95f0a2f1 SB |
2161 | else |
2162 | maybe_scalar = 1; | |
d2be0de5 YST |
2163 | #else |
2164 | maybe_scalar = 1; | |
2165 | #endif | |
09bef843 SB |
2166 | if (attrs) |
2167 | SAVEFREEOP(attrs); | |
5f66b61c | 2168 | rops = NULL; |
95f0a2f1 SB |
2169 | o = my_kid(o, attrs, &rops); |
2170 | if (rops) { | |
2171 | if (maybe_scalar && o->op_type == OP_PADSV) { | |
2172 | o = scalar(append_list(OP_LIST, (LISTOP*)rops, (LISTOP*)o)); | |
2173 | o->op_private |= OPpLVAL_INTRO; | |
2174 | } | |
2175 | else | |
2176 | o = append_list(OP_LIST, (LISTOP*)o, (LISTOP*)rops); | |
2177 | } | |
12bd6ede DM |
2178 | PL_parser->in_my = FALSE; |
2179 | PL_parser->in_my_stash = NULL; | |
eb64745e | 2180 | return o; |
09bef843 SB |
2181 | } |
2182 | ||
2183 | OP * | |
864dbfa3 | 2184 | Perl_sawparens(pTHX_ OP *o) |
79072805 | 2185 | { |
96a5add6 | 2186 | PERL_UNUSED_CONTEXT; |
79072805 LW |
2187 | if (o) |
2188 | o->op_flags |= OPf_PARENS; | |
2189 | return o; | |
2190 | } | |
2191 | ||
2192 | OP * | |
864dbfa3 | 2193 | Perl_bind_match(pTHX_ I32 type, OP *left, OP *right) |
79072805 | 2194 | { |
11343788 | 2195 | OP *o; |
59f00321 | 2196 | bool ismatchop = 0; |
1496a290 AL |
2197 | const OPCODE ltype = left->op_type; |
2198 | const OPCODE rtype = right->op_type; | |
79072805 | 2199 | |
7918f24d NC |
2200 | PERL_ARGS_ASSERT_BIND_MATCH; |
2201 | ||
1496a290 AL |
2202 | if ( (ltype == OP_RV2AV || ltype == OP_RV2HV || ltype == OP_PADAV |
2203 | || ltype == OP_PADHV) && ckWARN(WARN_MISC)) | |
041457d9 | 2204 | { |
1496a290 | 2205 | const char * const desc |
666ea192 JH |
2206 | = PL_op_desc[(rtype == OP_SUBST || rtype == OP_TRANS) |
2207 | ? (int)rtype : OP_MATCH]; | |
2208 | const char * const sample = ((ltype == OP_RV2AV || ltype == OP_PADAV) | |
2209 | ? "@array" : "%hash"); | |
9014280d | 2210 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
1c846c1f | 2211 | "Applying %s to %s will act on scalar(%s)", |
599cee73 | 2212 | desc, sample, sample); |
2ae324a7 | 2213 | } |
2214 | ||
1496a290 | 2215 | if (rtype == OP_CONST && |
5cc9e5c9 RH |
2216 | cSVOPx(right)->op_private & OPpCONST_BARE && |
2217 | cSVOPx(right)->op_private & OPpCONST_STRICT) | |
2218 | { | |
2219 | no_bareword_allowed(right); | |
2220 | } | |
2221 | ||
1496a290 AL |
2222 | ismatchop = rtype == OP_MATCH || |
2223 | rtype == OP_SUBST || | |
2224 | rtype == OP_TRANS; | |
59f00321 RGS |
2225 | if (ismatchop && right->op_private & OPpTARGET_MY) { |
2226 | right->op_targ = 0; | |
2227 | right->op_private &= ~OPpTARGET_MY; | |
2228 | } | |
2229 | if (!(right->op_flags & OPf_STACKED) && ismatchop) { | |
1496a290 AL |
2230 | OP *newleft; |
2231 | ||
79072805 | 2232 | right->op_flags |= OPf_STACKED; |
1496a290 AL |
2233 | if (rtype != OP_MATCH && |
2234 | ! (rtype == OP_TRANS && | |
6fbb66d6 | 2235 | right->op_private & OPpTRANS_IDENTICAL)) |
1496a290 AL |
2236 | newleft = mod(left, rtype); |
2237 | else | |
2238 | newleft = left; | |
79072805 | 2239 | if (right->op_type == OP_TRANS) |
1496a290 | 2240 | o = newBINOP(OP_NULL, OPf_STACKED, scalar(newleft), right); |
79072805 | 2241 | else |
1496a290 | 2242 | o = prepend_elem(rtype, scalar(newleft), right); |
79072805 | 2243 | if (type == OP_NOT) |
11343788 MB |
2244 | return newUNOP(OP_NOT, 0, scalar(o)); |
2245 | return o; | |
79072805 LW |
2246 | } |
2247 | else | |
2248 | return bind_match(type, left, | |
131b3ad0 | 2249 | pmruntime(newPMOP(OP_MATCH, 0), right, 0)); |
79072805 LW |
2250 | } |
2251 | ||
2252 | OP * | |
864dbfa3 | 2253 | Perl_invert(pTHX_ OP *o) |
79072805 | 2254 | { |
11343788 | 2255 | if (!o) |
1d866c12 | 2256 | return NULL; |
11343788 | 2257 | return newUNOP(OP_NOT, OPf_SPECIAL, scalar(o)); |
79072805 LW |
2258 | } |
2259 | ||
2260 | OP * | |
864dbfa3 | 2261 | Perl_scope(pTHX_ OP *o) |
79072805 | 2262 | { |
27da23d5 | 2263 | dVAR; |
79072805 | 2264 | if (o) { |
3280af22 | 2265 | if (o->op_flags & OPf_PARENS || PERLDB_NOOPT || PL_tainting) { |
463ee0b2 LW |
2266 | o = prepend_elem(OP_LINESEQ, newOP(OP_ENTER, 0), o); |
2267 | o->op_type = OP_LEAVE; | |
22c35a8c | 2268 | o->op_ppaddr = PL_ppaddr[OP_LEAVE]; |
463ee0b2 | 2269 | } |
fdb22418 HS |
2270 | else if (o->op_type == OP_LINESEQ) { |
2271 | OP *kid; | |
2272 | o->op_type = OP_SCOPE; | |
2273 | o->op_ppaddr = PL_ppaddr[OP_SCOPE]; | |
2274 | kid = ((LISTOP*)o)->op_first; | |
59110972 | 2275 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) { |
fdb22418 | 2276 | op_null(kid); |
59110972 RH |
2277 | |
2278 | /* The following deals with things like 'do {1 for 1}' */ | |
2279 | kid = kid->op_sibling; | |
2280 | if (kid && | |
2281 | (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE)) | |
2282 | op_null(kid); | |
2283 | } | |
463ee0b2 | 2284 | } |
fdb22418 | 2285 | else |
5f66b61c | 2286 | o = newLISTOP(OP_SCOPE, 0, o, NULL); |
79072805 LW |
2287 | } |
2288 | return o; | |
2289 | } | |
72dc9ed5 | 2290 | |
a0d0e21e | 2291 | int |
864dbfa3 | 2292 | Perl_block_start(pTHX_ int full) |
79072805 | 2293 | { |
97aff369 | 2294 | dVAR; |
73d840c0 | 2295 | const int retval = PL_savestack_ix; |
dd2155a4 | 2296 | pad_block_start(full); |
b3ac6de7 | 2297 | SAVEHINTS(); |
3280af22 | 2298 | PL_hints &= ~HINT_BLOCK_SCOPE; |
68da3b2f | 2299 | SAVECOMPILEWARNINGS(); |
72dc9ed5 | 2300 | PL_compiling.cop_warnings = DUP_WARNINGS(PL_compiling.cop_warnings); |
a0d0e21e LW |
2301 | return retval; |
2302 | } | |
2303 | ||
2304 | OP* | |
864dbfa3 | 2305 | Perl_block_end(pTHX_ I32 floor, OP *seq) |
a0d0e21e | 2306 | { |
97aff369 | 2307 | dVAR; |
6867be6d | 2308 | const int needblockscope = PL_hints & HINT_BLOCK_SCOPE; |
551405c4 | 2309 | OP* const retval = scalarseq(seq); |
e9818f4e | 2310 | LEAVE_SCOPE(floor); |
623e6609 | 2311 | CopHINTS_set(&PL_compiling, PL_hints); |
a0d0e21e | 2312 | if (needblockscope) |
3280af22 | 2313 | PL_hints |= HINT_BLOCK_SCOPE; /* propagate out */ |
dd2155a4 | 2314 | pad_leavemy(); |
a0d0e21e LW |
2315 | return retval; |
2316 | } | |
2317 | ||
76e3520e | 2318 | STATIC OP * |
cea2e8a9 | 2319 | S_newDEFSVOP(pTHX) |
54b9620d | 2320 | { |
97aff369 | 2321 | dVAR; |
f8f98e0a | 2322 | const PADOFFSET offset = Perl_pad_findmy(aTHX_ STR_WITH_LEN("$_"), 0); |
00b1698f | 2323 | if (offset == NOT_IN_PAD || PAD_COMPNAME_FLAGS_isOUR(offset)) { |
59f00321 RGS |
2324 | return newSVREF(newGVOP(OP_GV, 0, PL_defgv)); |
2325 | } | |
2326 | else { | |
551405c4 | 2327 | OP * const o = newOP(OP_PADSV, 0); |
59f00321 RGS |
2328 | o->op_targ = offset; |
2329 | return o; | |
2330 | } | |
54b9620d MB |
2331 | } |
2332 | ||
a0d0e21e | 2333 | void |
864dbfa3 | 2334 | Perl_newPROG(pTHX_ OP *o) |
a0d0e21e | 2335 | { |
97aff369 | 2336 | dVAR; |
7918f24d NC |
2337 | |
2338 | PERL_ARGS_ASSERT_NEWPROG; | |
2339 | ||
3280af22 | 2340 | if (PL_in_eval) { |
b295d113 TH |
2341 | if (PL_eval_root) |
2342 | return; | |
faef0170 HS |
2343 | PL_eval_root = newUNOP(OP_LEAVEEVAL, |
2344 | ((PL_in_eval & EVAL_KEEPERR) | |
2345 | ? OPf_SPECIAL : 0), o); | |
3280af22 | 2346 | PL_eval_start = linklist(PL_eval_root); |
7934575e GS |
2347 | PL_eval_root->op_private |= OPpREFCOUNTED; |
2348 | OpREFCNT_set(PL_eval_root, 1); | |
3280af22 | 2349 | PL_eval_root->op_next = 0; |
a2efc822 | 2350 | CALL_PEEP(PL_eval_start); |
a0d0e21e LW |
2351 | } |
2352 | else { | |
6be89cf9 AE |
2353 | if (o->op_type == OP_STUB) { |
2354 | PL_comppad_name = 0; | |
2355 | PL_compcv = 0; | |
d2c837a0 | 2356 | S_op_destroy(aTHX_ o); |
a0d0e21e | 2357 | return; |
6be89cf9 | 2358 | } |
3280af22 NIS |
2359 | PL_main_root = scope(sawparens(scalarvoid(o))); |
2360 | PL_curcop = &PL_compiling; | |
2361 | PL_main_start = LINKLIST(PL_main_root); | |
7934575e GS |
2362 | PL_main_root->op_private |= OPpREFCOUNTED; |
2363 | OpREFCNT_set(PL_main_root, 1); | |
3280af22 | 2364 | PL_main_root->op_next = 0; |
a2efc822 | 2365 | CALL_PEEP(PL_main_start); |
3280af22 | 2366 | PL_compcv = 0; |
3841441e | 2367 | |
4fdae800 | 2368 | /* Register with debugger */ |
84902520 | 2369 | if (PERLDB_INTER) { |
b96d8cd9 | 2370 | CV * const cv = get_cvs("DB::postponed", 0); |
3841441e CS |
2371 | if (cv) { |
2372 | dSP; | |
924508f0 | 2373 | PUSHMARK(SP); |
ad64d0ec | 2374 | XPUSHs(MUTABLE_SV(CopFILEGV(&PL_compiling))); |
3841441e | 2375 | PUTBACK; |
ad64d0ec | 2376 | call_sv(MUTABLE_SV(cv), G_DISCARD); |
3841441e CS |
2377 | } |
2378 | } | |
79072805 | 2379 | } |
79072805 LW |
2380 | } |
2381 | ||
2382 | OP * | |
864dbfa3 | 2383 | Perl_localize(pTHX_ OP *o, I32 lex) |
79072805 | 2384 | { |
97aff369 | 2385 | dVAR; |
7918f24d NC |
2386 | |
2387 | PERL_ARGS_ASSERT_LOCALIZE; | |
2388 | ||
79072805 | 2389 | if (o->op_flags & OPf_PARENS) |
d2be0de5 YST |
2390 | /* [perl #17376]: this appears to be premature, and results in code such as |
2391 | C< our(%x); > executing in list mode rather than void mode */ | |
2392 | #if 0 | |
79072805 | 2393 | list(o); |
d2be0de5 | 2394 | #else |
6f207bd3 | 2395 | NOOP; |
d2be0de5 | 2396 | #endif |
8990e307 | 2397 | else { |
f06b5848 DM |
2398 | if ( PL_parser->bufptr > PL_parser->oldbufptr |
2399 | && PL_parser->bufptr[-1] == ',' | |
041457d9 | 2400 | && ckWARN(WARN_PARENTHESIS)) |
64420d0d | 2401 | { |
f06b5848 | 2402 | char *s = PL_parser->bufptr; |
bac662ee | 2403 | bool sigil = FALSE; |
64420d0d | 2404 | |
8473848f | 2405 | /* some heuristics to detect a potential error */ |
bac662ee | 2406 | while (*s && (strchr(", \t\n", *s))) |
64420d0d | 2407 | s++; |
8473848f | 2408 | |
bac662ee TS |
2409 | while (1) { |
2410 | if (*s && strchr("@$%*", *s) && *++s | |
2411 | && (isALNUM(*s) || UTF8_IS_CONTINUED(*s))) { | |
2412 | s++; | |
2413 | sigil = TRUE; | |
2414 | while (*s && (isALNUM(*s) || UTF8_IS_CONTINUED(*s))) | |
2415 | s++; | |
2416 | while (*s && (strchr(", \t\n", *s))) | |
2417 | s++; | |
2418 | } | |
2419 | else | |
2420 | break; | |
2421 | } | |
2422 | if (sigil && (*s == ';' || *s == '=')) { | |
2423 | Perl_warner(aTHX_ packWARN(WARN_PARENTHESIS), | |
8473848f | 2424 | "Parentheses missing around \"%s\" list", |
12bd6ede DM |
2425 | lex |
2426 | ? (PL_parser->in_my == KEY_our | |
2427 | ? "our" | |
2428 | : PL_parser->in_my == KEY_state | |
2429 | ? "state" | |
2430 | : "my") | |
2431 | : "local"); | |
8473848f | 2432 | } |
8990e307 LW |
2433 | } |
2434 | } | |
93a17b20 | 2435 | if (lex) |
eb64745e | 2436 | o = my(o); |
93a17b20 | 2437 | else |
eb64745e | 2438 | o = mod(o, OP_NULL); /* a bit kludgey */ |
12bd6ede DM |
2439 | PL_parser->in_my = FALSE; |
2440 | PL_parser->in_my_stash = NULL; | |
eb64745e | 2441 | return o; |
79072805 LW |
2442 | } |
2443 | ||
2444 | OP * | |
864dbfa3 | 2445 | Perl_jmaybe(pTHX_ OP *o) |
79072805 | 2446 | { |
7918f24d NC |
2447 | PERL_ARGS_ASSERT_JMAYBE; |
2448 | ||
79072805 | 2449 | if (o->op_type == OP_LIST) { |
fafc274c | 2450 | OP * const o2 |
d4c19fe8 | 2451 | = newSVREF(newGVOP(OP_GV, 0, gv_fetchpvs(";", GV_ADD|GV_NOTQUAL, SVt_PV))); |
554b3eca | 2452 | o = convert(OP_JOIN, 0, prepend_elem(OP_LIST, o2, o)); |
79072805 LW |
2453 | } |
2454 | return o; | |
2455 | } | |
2456 | ||
1f676739 | 2457 | static OP * |
b7783a12 | 2458 | S_fold_constants(pTHX_ register OP *o) |
79072805 | 2459 | { |
27da23d5 | 2460 | dVAR; |
001d637e | 2461 | register OP * VOL curop; |
eb8433b7 | 2462 | OP *newop; |
8ea43dc8 | 2463 | VOL I32 type = o->op_type; |
e3cbe32f | 2464 | SV * VOL sv = NULL; |
b7f7fd0b NC |
2465 | int ret = 0; |
2466 | I32 oldscope; | |
2467 | OP *old_next; | |
5f2d9966 DM |
2468 | SV * const oldwarnhook = PL_warnhook; |
2469 | SV * const olddiehook = PL_diehook; | |
c427f4d2 | 2470 | COP not_compiling; |
b7f7fd0b | 2471 | dJMPENV; |
79072805 | 2472 | |
7918f24d NC |
2473 | PERL_ARGS_ASSERT_FOLD_CONSTANTS; |
2474 | ||
22c35a8c | 2475 | if (PL_opargs[type] & OA_RETSCALAR) |
79072805 | 2476 | scalar(o); |
b162f9ea | 2477 | if (PL_opargs[type] & OA_TARGET && !o->op_targ) |
ed6116ce | 2478 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 | 2479 | |
eac055e9 GS |
2480 | /* integerize op, unless it happens to be C<-foo>. |
2481 | * XXX should pp_i_negate() do magic string negation instead? */ | |
2482 | if ((PL_opargs[type] & OA_OTHERINT) && (PL_hints & HINT_INTEGER) | |
2483 | && !(type == OP_NEGATE && cUNOPo->op_first->op_type == OP_CONST | |
2484 | && (cUNOPo->op_first->op_private & OPpCONST_BARE))) | |
2485 | { | |
22c35a8c | 2486 | o->op_ppaddr = PL_ppaddr[type = ++(o->op_type)]; |
eac055e9 | 2487 | } |
85e6fe83 | 2488 | |
22c35a8c | 2489 | if (!(PL_opargs[type] & OA_FOLDCONST)) |
79072805 LW |
2490 | goto nope; |
2491 | ||
de939608 | 2492 | switch (type) { |
7a52d87a GS |
2493 | case OP_NEGATE: |
2494 | /* XXX might want a ck_negate() for this */ | |
2495 | cUNOPo->op_first->op_private &= ~OPpCONST_STRICT; | |
2496 | break; | |
de939608 CS |
2497 | case OP_UCFIRST: |
2498 | case OP_LCFIRST: | |
2499 | case OP_UC: | |
2500 | case OP_LC: | |
69dcf70c MB |
2501 | case OP_SLT: |
2502 | case OP_SGT: | |
2503 | case OP_SLE: | |
2504 | case OP_SGE: | |
2505 | case OP_SCMP: | |
2de3dbcc JH |
2506 | /* XXX what about the numeric ops? */ |
2507 | if (PL_hints & HINT_LOCALE) | |
de939608 | 2508 | goto nope; |
553e7bb0 | 2509 | break; |
de939608 CS |
2510 | } |
2511 | ||
13765c85 | 2512 | if (PL_parser && PL_parser->error_count) |
a0d0e21e LW |
2513 | goto nope; /* Don't try to run w/ errors */ |
2514 | ||
79072805 | 2515 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
1496a290 AL |
2516 | const OPCODE type = curop->op_type; |
2517 | if ((type != OP_CONST || (curop->op_private & OPpCONST_BARE)) && | |
2518 | type != OP_LIST && | |
2519 | type != OP_SCALAR && | |
2520 | type != OP_NULL && | |
2521 | type != OP_PUSHMARK) | |
7a52d87a | 2522 | { |
79072805 LW |
2523 | goto nope; |
2524 | } | |
2525 | } | |
2526 | ||
2527 | curop = LINKLIST(o); | |
b7f7fd0b | 2528 | old_next = o->op_next; |
79072805 | 2529 | o->op_next = 0; |
533c011a | 2530 | PL_op = curop; |
b7f7fd0b NC |
2531 | |
2532 | oldscope = PL_scopestack_ix; | |
edb2152a | 2533 | create_eval_scope(G_FAKINGEVAL); |
b7f7fd0b | 2534 | |
c427f4d2 NC |
2535 | /* Verify that we don't need to save it: */ |
2536 | assert(PL_curcop == &PL_compiling); | |
2537 | StructCopy(&PL_compiling, ¬_compiling, COP); | |
2538 | PL_curcop = ¬_compiling; | |
2539 | /* The above ensures that we run with all the correct hints of the | |
2540 | currently compiling COP, but that IN_PERL_RUNTIME is not true. */ | |
2541 | assert(IN_PERL_RUNTIME); | |
5f2d9966 DM |
2542 | PL_warnhook = PERL_WARNHOOK_FATAL; |
2543 | PL_diehook = NULL; | |
b7f7fd0b NC |
2544 | JMPENV_PUSH(ret); |
2545 | ||
2546 | switch (ret) { | |
2547 | case 0: | |
2548 | CALLRUNOPS(aTHX); | |
2549 | sv = *(PL_stack_sp--); | |
2550 | if (o->op_targ && sv == PAD_SV(o->op_targ)) /* grab pad temp? */ | |
2551 | pad_swipe(o->op_targ, FALSE); | |
2552 | else if (SvTEMP(sv)) { /* grab mortal temp? */ | |
2553 | SvREFCNT_inc_simple_void(sv); | |
2554 | SvTEMP_off(sv); | |
2555 | } | |
2556 | break; | |
2557 | case 3: | |
2558 | /* Something tried to die. Abandon constant folding. */ | |
2559 | /* Pretend the error never happened. */ | |
ab69dbc2 | 2560 | CLEAR_ERRSV(); |
b7f7fd0b NC |
2561 | o->op_next = old_next; |
2562 | break; | |
2563 | default: | |
2564 | JMPENV_POP; | |
5f2d9966 DM |
2565 | /* Don't expect 1 (setjmp failed) or 2 (something called my_exit) */ |
2566 | PL_warnhook = oldwarnhook; | |
2567 | PL_diehook = olddiehook; | |
2568 | /* XXX note that this croak may fail as we've already blown away | |
2569 | * the stack - eg any nested evals */ | |
b7f7fd0b NC |
2570 | Perl_croak(aTHX_ "panic: fold_constants JMPENV_PUSH returned %d", ret); |
2571 | } | |
b7f7fd0b | 2572 | JMPENV_POP; |
5f2d9966 DM |
2573 | PL_warnhook = oldwarnhook; |
2574 | PL_diehook = olddiehook; | |
c427f4d2 | 2575 | PL_curcop = &PL_compiling; |
edb2152a NC |
2576 | |
2577 | if (PL_scopestack_ix > oldscope) | |
2578 | delete_eval_scope(); | |
eb8433b7 | 2579 | |
b7f7fd0b NC |
2580 | if (ret) |
2581 | goto nope; | |
2582 | ||
eb8433b7 | 2583 | #ifndef PERL_MAD |
79072805 | 2584 | op_free(o); |
eb8433b7 | 2585 | #endif |
de5e01c2 | 2586 | assert(sv); |
79072805 | 2587 | if (type == OP_RV2GV) |
159b6efe | 2588 | newop = newGVOP(OP_GV, 0, MUTABLE_GV(sv)); |
eb8433b7 | 2589 | else |
ad64d0ec | 2590 | newop = newSVOP(OP_CONST, 0, MUTABLE_SV(sv)); |
eb8433b7 NC |
2591 | op_getmad(o,newop,'f'); |
2592 | return newop; | |
aeea060c | 2593 | |
b7f7fd0b | 2594 | nope: |
79072805 LW |
2595 | return o; |
2596 | } | |
2597 | ||
1f676739 | 2598 | static OP * |
b7783a12 | 2599 | S_gen_constant_list(pTHX_ register OP *o) |
79072805 | 2600 | { |
27da23d5 | 2601 | dVAR; |
79072805 | 2602 | register OP *curop; |
6867be6d | 2603 | const I32 oldtmps_floor = PL_tmps_floor; |
79072805 | 2604 | |
a0d0e21e | 2605 | list(o); |
13765c85 | 2606 | if (PL_parser && PL_parser->error_count) |
a0d0e21e LW |
2607 | return o; /* Don't attempt to run with errors */ |
2608 | ||
533c011a | 2609 | PL_op = curop = LINKLIST(o); |
a0d0e21e | 2610 | o->op_next = 0; |
a2efc822 | 2611 | CALL_PEEP(curop); |
cea2e8a9 GS |
2612 | pp_pushmark(); |
2613 | CALLRUNOPS(aTHX); | |
533c011a | 2614 | PL_op = curop; |
78c72037 NC |
2615 | assert (!(curop->op_flags & OPf_SPECIAL)); |
2616 | assert(curop->op_type == OP_RANGE); | |
cea2e8a9 | 2617 | pp_anonlist(); |
3280af22 | 2618 | PL_tmps_floor = oldtmps_floor; |
79072805 LW |
2619 | |
2620 | o->op_type = OP_RV2AV; | |
22c35a8c | 2621 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
fb53bbb2 SG |
2622 | o->op_flags &= ~OPf_REF; /* treat \(1..2) like an ordinary list */ |
2623 | o->op_flags |= OPf_PARENS; /* and flatten \(1..2,3) */ | |
2814eb74 | 2624 | o->op_opt = 0; /* needs to be revisited in peep() */ |
79072805 | 2625 | curop = ((UNOP*)o)->op_first; |
b37c2d43 | 2626 | ((UNOP*)o)->op_first = newSVOP(OP_CONST, 0, SvREFCNT_inc_NN(*PL_stack_sp--)); |
eb8433b7 NC |
2627 | #ifdef PERL_MAD |
2628 | op_getmad(curop,o,'O'); | |
2629 | #else | |
79072805 | 2630 | op_free(curop); |
eb8433b7 | 2631 | #endif |
79072805 LW |
2632 | linklist(o); |
2633 | return list(o); | |
2634 | } | |
2635 | ||
2636 | OP * | |
864dbfa3 | 2637 | Perl_convert(pTHX_ I32 type, I32 flags, OP *o) |
79072805 | 2638 | { |
27da23d5 | 2639 | dVAR; |
11343788 | 2640 | if (!o || o->op_type != OP_LIST) |
5f66b61c | 2641 | o = newLISTOP(OP_LIST, 0, o, NULL); |
748a9306 | 2642 | else |
5dc0d613 | 2643 | o->op_flags &= ~OPf_WANT; |
79072805 | 2644 | |
22c35a8c | 2645 | if (!(PL_opargs[type] & OA_MARK)) |
93c66552 | 2646 | op_null(cLISTOPo->op_first); |
8990e307 | 2647 | |
eb160463 | 2648 | o->op_type = (OPCODE)type; |
22c35a8c | 2649 | o->op_ppaddr = PL_ppaddr[type]; |
11343788 | 2650 | o->op_flags |= flags; |
79072805 | 2651 | |
11343788 | 2652 | o = CHECKOP(type, o); |
fe2774ed | 2653 | if (o->op_type != (unsigned)type) |
11343788 | 2654 | return o; |
79072805 | 2655 | |
11343788 | 2656 | return fold_constants(o); |
79072805 LW |
2657 | } |
2658 | ||
2659 | /* List constructors */ | |
2660 | ||
2661 | OP * | |
864dbfa3 | 2662 | Perl_append_elem(pTHX_ I32 type, OP *first, OP *last) |
79072805 LW |
2663 | { |
2664 | if (!first) | |
2665 | return last; | |
8990e307 LW |
2666 | |
2667 | if (!last) | |
79072805 | 2668 | return first; |
8990e307 | 2669 | |
fe2774ed | 2670 | if (first->op_type != (unsigned)type |
155aba94 GS |
2671 | || (type == OP_LIST && (first->op_flags & OPf_PARENS))) |
2672 | { | |
2673 | return newLISTOP(type, 0, first, last); | |
2674 | } | |
79072805 | 2675 | |
a0d0e21e LW |
2676 | if (first->op_flags & OPf_KIDS) |
2677 | ((LISTOP*)first)->op_last->op_sibling = last; | |
2678 | else { | |
2679 | first->op_flags |= OPf_KIDS; | |
2680 | ((LISTOP*)first)->op_first = last; | |
2681 | } | |
2682 | ((LISTOP*)first)->op_last = last; | |
a0d0e21e | 2683 | return first; |
79072805 LW |
2684 | } |
2685 | ||
2686 | OP * | |
864dbfa3 | 2687 | Perl_append_list(pTHX_ I32 type, LISTOP *first, LISTOP *last) |
79072805 LW |
2688 | { |
2689 | if (!first) | |
2690 | return (OP*)last; | |
8990e307 LW |
2691 | |
2692 | if (!last) | |
79072805 | 2693 | return (OP*)first; |
8990e307 | 2694 | |
fe2774ed | 2695 | if (first->op_type != (unsigned)type) |
79072805 | 2696 | return prepend_elem(type, (OP*)first, (OP*)last); |
8990e307 | 2697 | |
fe2774ed | 2698 | if (last->op_type != (unsigned)type) |
79072805 LW |
2699 | return append_elem(type, (OP*)first, (OP*)last); |
2700 | ||
2701 | first->op_last->op_sibling = last->op_first; | |
2702 | first->op_last = last->op_last; | |
117dada2 | 2703 | first->op_flags |= (last->op_flags & OPf_KIDS); |
1c846c1f | 2704 | |
eb8433b7 NC |
2705 | #ifdef PERL_MAD |
2706 | if (last->op_first && first->op_madprop) { | |
2707 | MADPROP *mp = last->op_first->op_madprop; | |
2708 | if (mp) { | |
2709 | while (mp->mad_next) | |
2710 | mp = mp->mad_next; | |
2711 | mp->mad_next = first->op_madprop; | |
2712 | } | |
2713 | else { | |
2714 | last->op_first->op_madprop = first->op_madprop; | |
2715 | } | |
2716 | } | |
2717 | first->op_madprop = last->op_madprop; | |
2718 | last->op_madprop = 0; | |
2719 | #endif | |
2720 | ||
d2c837a0 | 2721 | S_op_destroy(aTHX_ (OP*)last); |
238a4c30 | 2722 | |
79072805 LW |
2723 | return (OP*)first; |
2724 | } | |
2725 | ||
2726 | OP * | |
864dbfa3 | 2727 | Perl_prepend_elem(pTHX_ I32 type, OP *first, OP *last) |
79072805 LW |
2728 | { |
2729 | if (!first) | |
2730 | return last; | |
8990e307 LW |
2731 | |
2732 | if (!last) | |
79072805 | 2733 | return first; |
8990e307 | 2734 | |
fe2774ed | 2735 | if (last->op_type == (unsigned)type) { |
8990e307 LW |
2736 | if (type == OP_LIST) { /* already a PUSHMARK there */ |
2737 | first->op_sibling = ((LISTOP*)last)->op_first->op_sibling; | |
2738 | ((LISTOP*)last)->op_first->op_sibling = first; | |
36a5d4ba DC |
2739 | if (!(first->op_flags & OPf_PARENS)) |
2740 | last->op_flags &= ~OPf_PARENS; | |
8990e307 LW |
2741 | } |
2742 | else { | |
2743 | if (!(last->op_flags & OPf_KIDS)) { | |
2744 | ((LISTOP*)last)->op_last = first; | |
2745 | last->op_flags |= OPf_KIDS; | |
2746 | } | |
2747 | first->op_sibling = ((LISTOP*)last)->op_first; | |
2748 | ((LISTOP*)last)->op_first = first; | |
79072805 | 2749 | } |
117dada2 | 2750 | last->op_flags |= OPf_KIDS; |
79072805 LW |
2751 | return last; |
2752 | } | |
2753 | ||
2754 | return newLISTOP(type, 0, first, last); | |
2755 | } | |
2756 | ||
2757 | /* Constructors */ | |
2758 | ||
eb8433b7 NC |
2759 | #ifdef PERL_MAD |
2760 | ||
2761 | TOKEN * | |
2762 | Perl_newTOKEN(pTHX_ I32 optype, YYSTYPE lval, MADPROP* madprop) | |
2763 | { | |
2764 | TOKEN *tk; | |
99129197 | 2765 | Newxz(tk, 1, TOKEN); |
eb8433b7 NC |
2766 | tk->tk_type = (OPCODE)optype; |
2767 | tk->tk_type = 12345; | |
2768 | tk->tk_lval = lval; | |
2769 | tk->tk_mad = madprop; | |
2770 | return tk; | |
2771 | } | |
2772 | ||
2773 | void | |
2774 | Perl_token_free(pTHX_ TOKEN* tk) | |
2775 | { | |
7918f24d NC |
2776 | PERL_ARGS_ASSERT_TOKEN_FREE; |
2777 | ||
eb8433b7 NC |
2778 | if (tk->tk_type != 12345) |
2779 | return; | |
2780 | mad_free(tk->tk_mad); | |
2781 | Safefree(tk); | |
2782 | } | |
2783 | ||
2784 | void | |
2785 | Perl_token_getmad(pTHX_ TOKEN* tk, OP* o, char slot) | |
2786 | { | |
2787 | MADPROP* mp; | |
2788 | MADPROP* tm; | |
7918f24d NC |
2789 | |
2790 | PERL_ARGS_ASSERT_TOKEN_GETMAD; | |
2791 | ||
eb8433b7 NC |
2792 | if (tk->tk_type != 12345) { |
2793 | Perl_warner(aTHX_ packWARN(WARN_MISC), | |
2794 | "Invalid TOKEN object ignored"); | |
2795 | return; | |
2796 | } | |
2797 | tm = tk->tk_mad; | |
2798 | if (!tm) | |
2799 | return; | |
2800 | ||
2801 | /* faked up qw list? */ | |
2802 | if (slot == '(' && | |
2803 | tm->mad_type == MAD_SV && | |
d503a9ba | 2804 | SvPVX((SV *)tm->mad_val)[0] == 'q') |
eb8433b7 NC |
2805 | slot = 'x'; |
2806 | ||
2807 | if (o) { | |
2808 | mp = o->op_madprop; | |
2809 | if (mp) { | |
2810 | for (;;) { | |
2811 | /* pretend constant fold didn't happen? */ | |
2812 | if (mp->mad_key == 'f' && | |
2813 | (o->op_type == OP_CONST || | |
2814 | o->op_type == OP_GV) ) | |
2815 | { | |
2816 | token_getmad(tk,(OP*)mp->mad_val,slot); | |
2817 | return; | |
2818 | } | |
2819 | if (!mp->mad_next) | |
2820 | break; | |
2821 | mp = mp->mad_next; | |
2822 | } | |
2823 | mp->mad_next = tm; | |
2824 | mp = mp->mad_next; | |
2825 | } | |
2826 | else { | |
2827 | o->op_madprop = tm; | |
2828 | mp = o->op_madprop; | |
2829 | } | |
2830 | if (mp->mad_key == 'X') | |
2831 | mp->mad_key = slot; /* just change the first one */ | |
2832 | ||
2833 | tk->tk_mad = 0; | |
2834 | } | |
2835 | else | |
2836 | mad_free(tm); | |
2837 | Safefree(tk); | |
2838 | } | |
2839 | ||
2840 | void | |
2841 | Perl_op_getmad_weak(pTHX_ OP* from, OP* o, char slot) | |
2842 | { | |
2843 | MADPROP* mp; | |
2844 | if (!from) | |
2845 | return; | |
2846 | if (o) { | |
2847 | mp = o->op_madprop; | |
2848 | if (mp) { | |
2849 | for (;;) { | |
2850 | /* pretend constant fold didn't happen? */ | |
2851 | if (mp->mad_key == 'f' && | |
2852 | (o->op_type == OP_CONST || | |
2853 | o->op_type == OP_GV) ) | |
2854 | { | |
2855 | op_getmad(from,(OP*)mp->mad_val,slot); | |
2856 | return; | |
2857 | } | |
2858 | if (!mp->mad_next) | |
2859 | break; | |
2860 | mp = mp->mad_next; | |
2861 | } | |
2862 | mp->mad_next = newMADPROP(slot,MAD_OP,from,0); | |
2863 | } | |
2864 | else { | |
2865 | o->op_madprop = newMADPROP(slot,MAD_OP,from,0); | |
2866 | } | |
2867 | } | |
2868 | } | |
2869 | ||
2870 | void | |
2871 | Perl_op_getmad(pTHX_ OP* from, OP* o, char slot) | |
2872 | { | |
2873 | MADPROP* mp; | |
2874 | if (!from) | |
2875 | return; | |
2876 | if (o) { | |
2877 | mp = o->op_madprop; | |
2878 | if (mp) { | |
2879 | for (;;) { | |
2880 | /* pretend constant fold didn't happen? */ | |
2881 | if (mp->mad_key == 'f' && | |
2882 | (o->op_type == OP_CONST || | |
2883 | o->op_type == OP_GV) ) | |
2884 | { | |
2885 | op_getmad(from,(OP*)mp->mad_val,slot); | |
2886 | return; | |
2887 | } | |
2888 | if (!mp->mad_next) | |
2889 | break; | |
2890 | mp = mp->mad_next; | |
2891 | } | |
2892 | mp->mad_next = newMADPROP(slot,MAD_OP,from,1); | |
2893 | } | |
2894 | else { | |
2895 | o->op_madprop = newMADPROP(slot,MAD_OP,from,1); | |
2896 | } | |
2897 | } | |
2898 | else { | |
99129197 NC |
2899 | PerlIO_printf(PerlIO_stderr(), |
2900 | "DESTROYING op = %0"UVxf"\n", PTR2UV(from)); | |
eb8433b7 NC |
2901 | op_free(from); |
2902 | } | |
2903 | } | |
2904 | ||
2905 | void | |
2906 | Perl_prepend_madprops(pTHX_ MADPROP* mp, OP* o, char slot) | |
2907 | { | |
2908 | MADPROP* tm; | |
2909 | if (!mp || !o) | |
2910 | return; | |
2911 | if (slot) | |
2912 | mp->mad_key = slot; | |
2913 | tm = o->op_madprop; | |
2914 | o->op_madprop = mp; | |
2915 | for (;;) { | |
2916 | if (!mp->mad_next) | |
2917 | break; | |
2918 | mp = mp->mad_next; | |
2919 | } | |
2920 | mp->mad_next = tm; | |
2921 | } | |
2922 | ||
2923 | void | |
2924 | Perl_append_madprops(pTHX_ MADPROP* tm, OP* o, char slot) | |
2925 | { | |
2926 | if (!o) | |
2927 | return; | |
2928 | addmad(tm, &(o->op_madprop), slot); | |
2929 | } | |
2930 | ||
2931 | void | |
2932 | Perl_addmad(pTHX_ MADPROP* tm, MADPROP** root, char slot) | |
2933 | { | |
2934 | MADPROP* mp; | |
2935 | if (!tm || !root) | |
2936 | return; | |
2937 | if (slot) | |
2938 | tm->mad_key = slot; | |
2939 | mp = *root; | |
2940 | if (!mp) { | |
2941 | *root = tm; | |
2942 | return; | |
2943 | } | |
2944 | for (;;) { | |
2945 | if (!mp->mad_next) | |
2946 | break; | |
2947 | mp = mp->mad_next; | |
2948 | } | |
2949 | mp->mad_next = tm; | |
2950 | } | |
2951 | ||
2952 | MADPROP * | |
2953 | Perl_newMADsv(pTHX_ char key, SV* sv) | |
2954 | { | |
7918f24d NC |
2955 | PERL_ARGS_ASSERT_NEWMADSV; |
2956 | ||
eb8433b7 NC |
2957 | return newMADPROP(key, MAD_SV, sv, 0); |
2958 | } | |
2959 | ||
2960 | MADPROP * | |
d503a9ba | 2961 | Perl_newMADPROP(pTHX_ char key, char type, void* val, I32 vlen) |
eb8433b7 NC |
2962 | { |
2963 | MADPROP *mp; | |
99129197 | 2964 | Newxz(mp, 1, MADPROP); |
eb8433b7 NC |
2965 | mp->mad_next = 0; |
2966 | mp->mad_key = key; | |
2967 | mp->mad_vlen = vlen; | |
2968 | mp->mad_type = type; | |
2969 | mp->mad_val = val; | |
2970 | /* PerlIO_printf(PerlIO_stderr(), "NEW mp = %0x\n", mp); */ | |
2971 | return mp; | |
2972 | } | |
2973 | ||
2974 | void | |
2975 | Perl_mad_free(pTHX_ MADPROP* mp) | |
2976 | { | |
2977 | /* PerlIO_printf(PerlIO_stderr(), "FREE mp = %0x\n", mp); */ | |
2978 | if (!mp) | |
2979 | return; | |
2980 | if (mp->mad_next) | |
2981 | mad_free(mp->mad_next); | |
bc177e6b | 2982 | /* if (PL_parser && PL_parser->lex_state != LEX_NOTPARSING && mp->mad_vlen) |
eb8433b7 NC |
2983 | PerlIO_printf(PerlIO_stderr(), "DESTROYING '%c'=<%s>\n", mp->mad_key & 255, mp->mad_val); */ |
2984 | switch (mp->mad_type) { | |
2985 | case MAD_NULL: | |
2986 | break; | |
2987 | case MAD_PV: | |
2988 | Safefree((char*)mp->mad_val); | |
2989 | break; | |
2990 | case MAD_OP: | |
2991 | if (mp->mad_vlen) /* vlen holds "strong/weak" boolean */ | |
2992 | op_free((OP*)mp->mad_val); | |
2993 | break; | |
2994 | case MAD_SV: | |
ad64d0ec | 2995 | sv_free(MUTABLE_SV(mp->mad_val)); |
eb8433b7 NC |
2996 | break; |
2997 | default: | |
2998 | PerlIO_printf(PerlIO_stderr(), "Unrecognized mad\n"); | |
2999 | break; | |
3000 | } | |
3001 | Safefree(mp); | |
3002 | } | |
3003 | ||
3004 | #endif | |
3005 | ||
79072805 | 3006 | OP * |
864dbfa3 | 3007 | Perl_newNULLLIST(pTHX) |
79072805 | 3008 | { |
8990e307 LW |
3009 | return newOP(OP_STUB, 0); |
3010 | } | |
3011 | ||
1f676739 | 3012 | static OP * |
b7783a12 | 3013 | S_force_list(pTHX_ OP *o) |
8990e307 | 3014 | { |
11343788 | 3015 | if (!o || o->op_type != OP_LIST) |
5f66b61c | 3016 | o = newLISTOP(OP_LIST, 0, o, NULL); |
93c66552 | 3017 | op_null(o); |
11343788 | 3018 | return o; |
79072805 LW |
3019 | } |
3020 | ||
3021 | OP * | |
864dbfa3 | 3022 | Perl_newLISTOP(pTHX_ I32 type, I32 flags, OP *first, OP *last) |
79072805 | 3023 | { |
27da23d5 | 3024 | dVAR; |
79072805 LW |
3025 | LISTOP *listop; |
3026 | ||
e69777c1 GG |
3027 | assert((PL_opargs[type] & OA_CLASS_MASK) == OA_LISTOP); |
3028 | ||
b7dc083c | 3029 | NewOp(1101, listop, 1, LISTOP); |
79072805 | 3030 | |
eb160463 | 3031 | listop->op_type = (OPCODE)type; |
22c35a8c | 3032 | listop->op_ppaddr = PL_ppaddr[type]; |
117dada2 SM |
3033 | if (first || last) |
3034 | flags |= OPf_KIDS; | |
eb160463 | 3035 | listop->op_flags = (U8)flags; |
79072805 LW |
3036 | |
3037 | if (!last && first) | |
3038 | last = first; | |
3039 | else if (!first && last) | |
3040 | first = last; | |
8990e307 LW |
3041 | else if (first) |
3042 | first->op_sibling = last; | |
79072805 LW |
3043 | listop->op_first = first; |
3044 | listop->op_last = last; | |
8990e307 | 3045 | if (type == OP_LIST) { |
551405c4 | 3046 | OP* const pushop = newOP(OP_PUSHMARK, 0); |
8990e307 LW |
3047 | pushop->op_sibling = first; |
3048 | listop->op_first = pushop; | |
3049 | listop->op_flags |= OPf_KIDS; | |
3050 | if (!last) | |
3051 | listop->op_last = pushop; | |
3052 | } | |
79072805 | 3053 | |
463d09e6 | 3054 | return CHECKOP(type, listop); |
79072805 LW |
3055 | } |
3056 | ||
3057 | OP * | |
864dbfa3 | 3058 | Perl_newOP(pTHX_ I32 type, I32 flags) |
79072805 | 3059 | { |
27da23d5 | 3060 | dVAR; |
11343788 | 3061 | OP *o; |
e69777c1 GG |
3062 | |
3063 | assert((PL_opargs[type] & OA_CLASS_MASK) == OA_BASEOP | |
3064 | || (PL_opargs[type] & OA_CLASS_MASK) == OA_BASEOP_OR_UNOP | |
3065 | || (PL_opargs[type] & OA_CLASS_MASK) == OA_FILESTATOP | |
3066 | || (PL_opargs[type] & OA_CLASS_MASK) == OA_LOOPEXOP); | |
3067 | ||
b7dc083c | 3068 | NewOp(1101, o, 1, OP); |
eb160463 | 3069 | o->op_type = (OPCODE)type; |
22c35a8c | 3070 | o->op_ppaddr = PL_ppaddr[type]; |
eb160463 | 3071 | o->op_flags = (U8)flags; |
670f3923 DM |
3072 | o->op_latefree = 0; |
3073 | o->op_latefreed = 0; | |
7e5d8ed2 | 3074 | o->op_attached = 0; |
79072805 | 3075 | |
11343788 | 3076 | o->op_next = o; |
eb160463 | 3077 | o->op_private = (U8)(0 | (flags >> 8)); |
22c35a8c | 3078 | if (PL_opargs[type] & OA_RETSCALAR) |
11343788 | 3079 | scalar(o); |
22c35a8c | 3080 | if (PL_opargs[type] & OA_TARGET) |
11343788 MB |
3081 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
3082 | return CHECKOP(type, o); | |
79072805 LW |
3083 | } |
3084 | ||
3085 | OP * | |
864dbfa3 | 3086 | Perl_newUNOP(pTHX_ I32 type, I32 flags, OP *first) |
79072805 | 3087 | { |
27da23d5 | 3088 | dVAR; |
79072805 LW |
3089 | UNOP *unop; |
3090 | ||
e69777c1 GG |
3091 | assert((PL_opargs[type] & OA_CLASS_MASK) == OA_UNOP |
3092 | || (PL_opargs[type] & OA_CLASS_MASK) == OA_BASEOP_OR_UNOP | |
3093 | || (PL_opargs[type] & OA_CLASS_MASK) == OA_FILESTATOP | |
3094 | || (PL_opargs[type] & OA_CLASS_MASK) == OA_LOOPEXOP | |
3095 | || type == OP_SASSIGN | |
32e2a35d | 3096 | || type == OP_ENTERTRY |
e69777c1 GG |
3097 | || type == OP_NULL ); |
3098 | ||
93a17b20 | 3099 | if (!first) |
aeea060c | 3100 | first = newOP(OP_STUB, 0); |
22c35a8c | 3101 | if (PL_opargs[type] & OA_MARK) |
8990e307 | 3102 | first = force_list(first); |
93a17b20 | 3103 | |
b7dc083c | 3104 | NewOp(1101, unop, 1, UNOP); |
eb160463 | 3105 | unop->op_type = (OPCODE)type; |
22c35a8c | 3106 | unop->op_ppaddr = PL_ppaddr[type]; |
79072805 | 3107 | unop->op_first = first; |
585ec06d | 3108 | unop->op_flags = (U8)(flags | OPf_KIDS); |
eb160463 | 3109 | unop->op_private = (U8)(1 | (flags >> 8)); |
e50aee73 | 3110 | unop = (UNOP*) CHECKOP(type, unop); |
79072805 LW |
3111 | if (unop->op_next) |
3112 | return (OP*)unop; | |
3113 | ||
a0d0e21e | 3114 | return fold_constants((OP *) unop); |
79072805 LW |
3115 | } |
3116 | ||
3117 | OP * | |
864dbfa3 | 3118 | Perl_newBINOP(pTHX_ I32 type, I32 flags, OP *first, OP *last) |
79072805 | 3119 | { |
27da23d5 | 3120 | dVAR; |
79072805 | 3121 | BINOP *binop; |
e69777c1 GG |
3122 | |
3123 | assert((PL_opargs[type] & OA_CLASS_MASK) == OA_BINOP | |
3124 | || type == OP_SASSIGN || type == OP_NULL ); | |
3125 | ||
b7dc083c | 3126 | NewOp(1101, binop, 1, BINOP); |
79072805 LW |
3127 | |
3128 | if (!first) | |
3129 | first = newOP(OP_NULL, 0); | |
3130 | ||
eb160463 | 3131 | binop->op_type = (OPCODE)type; |
22c35a8c | 3132 | binop->op_ppaddr = PL_ppaddr[type]; |
79072805 | 3133 | binop->op_first = first; |
585ec06d | 3134 | binop->op_flags = (U8)(flags | OPf_KIDS); |
79072805 LW |
3135 | if (!last) { |
3136 | last = first; | |
eb160463 | 3137 | binop->op_private = (U8)(1 | (flags >> 8)); |
79072805 LW |
3138 | } |
3139 | else { | |
eb160463 | 3140 | binop->op_private = (U8)(2 | (flags >> 8)); |
79072805 LW |
3141 | first->op_sibling = last; |
3142 | } | |
3143 | ||
e50aee73 | 3144 | binop = (BINOP*)CHECKOP(type, binop); |
eb160463 | 3145 | if (binop->op_next || binop->op_type != (OPCODE)type) |
79072805 LW |
3146 | return (OP*)binop; |
3147 | ||
7284ab6f | 3148 | binop->op_last = binop->op_first->op_sibling; |
79072805 | 3149 | |
a0d0e21e | 3150 | return fold_constants((OP *)binop); |
79072805 LW |
3151 | } |
3152 | ||
5f66b61c AL |
3153 | static int uvcompare(const void *a, const void *b) |
3154 | __attribute__nonnull__(1) | |
3155 | __attribute__nonnull__(2) | |
3156 | __attribute__pure__; | |
abb2c242 | 3157 | static int uvcompare(const void *a, const void *b) |
2b9d42f0 | 3158 | { |
e1ec3a88 | 3159 | if (*((const UV *)a) < (*(const UV *)b)) |
2b9d42f0 | 3160 | return -1; |
e1ec3a88 | 3161 | if (*((const UV *)a) > (*(const UV *)b)) |
2b9d42f0 | 3162 | return 1; |
e1ec3a88 | 3163 | if (*((const UV *)a+1) < (*(const UV *)b+1)) |
2b9d42f0 | 3164 | return -1; |
e1ec3a88 | 3165 | if (*((const UV *)a+1) > (*(const UV *)b+1)) |
2b9d42f0 | 3166 | return 1; |
a0ed51b3 LW |
3167 | return 0; |
3168 | } | |
3169 | ||
0d86688d NC |
3170 | static OP * |
3171 | S_pmtrans(pTHX_ OP *o, OP *expr, OP *repl) | |
79072805 | 3172 | { |
97aff369 | 3173 | dVAR; |
2d03de9c | 3174 | SV * const tstr = ((SVOP*)expr)->op_sv; |
fbbb0949 DM |
3175 | SV * const rstr = |
3176 | #ifdef PERL_MAD | |
3177 | (repl->op_type == OP_NULL) | |
3178 | ? ((SVOP*)((LISTOP*)repl)->op_first)->op_sv : | |
3179 | #endif | |
3180 | ((SVOP*)repl)->op_sv; | |
463ee0b2 LW |
3181 | STRLEN tlen; |
3182 | STRLEN rlen; | |
5c144d81 NC |
3183 | const U8 *t = (U8*)SvPV_const(tstr, tlen); |
3184 | const U8 *r = (U8*)SvPV_const(rstr, rlen); | |
79072805 LW |
3185 | register I32 i; |
3186 | register I32 j; | |
9b877dbb | 3187 | I32 grows = 0; |
79072805 LW |
3188 | register short *tbl; |
3189 | ||
551405c4 AL |
3190 | const I32 complement = o->op_private & OPpTRANS_COMPLEMENT; |
3191 | const I32 squash = o->op_private & OPpTRANS_SQUASH; | |
3192 | I32 del = o->op_private & OPpTRANS_DELETE; | |
043e41b8 | 3193 | SV* swash; |
7918f24d NC |
3194 | |
3195 | PERL_ARGS_ASSERT_PMTRANS; | |
3196 | ||
800b4dc4 | 3197 | PL_hints |= HINT_BLOCK_SCOPE; |
1c846c1f | 3198 | |
036b4402 GS |
3199 | if (SvUTF8(tstr)) |
3200 | o->op_private |= OPpTRANS_FROM_UTF; | |
1c846c1f NIS |
3201 | |
3202 | if (SvUTF8(rstr)) | |
036b4402 | 3203 | o->op_private |= OPpTRANS_TO_UTF; |
79072805 | 3204 | |
a0ed51b3 | 3205 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { |
396482e1 | 3206 | SV* const listsv = newSVpvs("# comment\n"); |
c445ea15 | 3207 | SV* transv = NULL; |
5c144d81 NC |
3208 | const U8* tend = t + tlen; |
3209 | const U8* rend = r + rlen; | |
ba210ebe | 3210 | STRLEN ulen; |
84c133a0 RB |
3211 | UV tfirst = 1; |
3212 | UV tlast = 0; | |
3213 | IV tdiff; | |
3214 | UV rfirst = 1; | |
3215 | UV rlast = 0; | |
3216 | IV rdiff; | |
3217 | IV diff; | |
a0ed51b3 LW |
3218 | I32 none = 0; |
3219 | U32 max = 0; | |
3220 | I32 bits; | |
a0ed51b3 | 3221 | I32 havefinal = 0; |
9c5ffd7c | 3222 | U32 final = 0; |
551405c4 AL |
3223 | const I32 from_utf = o->op_private & OPpTRANS_FROM_UTF; |
3224 | const I32 to_utf = o->op_private & OPpTRANS_TO_UTF; | |
bf4a1e57 JH |
3225 | U8* tsave = NULL; |
3226 | U8* rsave = NULL; | |
9f7f3913 | 3227 | const U32 flags = UTF8_ALLOW_DEFAULT; |
bf4a1e57 JH |
3228 | |
3229 | if (!from_utf) { | |
3230 | STRLEN len = tlen; | |
5c144d81 | 3231 | t = tsave = bytes_to_utf8(t, &len); |
bf4a1e57 JH |
3232 | tend = t + len; |
3233 | } | |
3234 | if (!to_utf && rlen) { | |
3235 | STRLEN len = rlen; | |
5c144d81 | 3236 | r = rsave = bytes_to_utf8(r, &len); |
bf4a1e57 JH |
3237 | rend = r + len; |
3238 | } | |
a0ed51b3 | 3239 | |
2b9d42f0 NIS |
3240 | /* There are several snags with this code on EBCDIC: |
3241 | 1. 0xFF is a legal UTF-EBCDIC byte (there are no illegal bytes). | |
3242 | 2. scan_const() in toke.c has encoded chars in native encoding which makes | |
3243 | ranges at least in EBCDIC 0..255 range the bottom odd. | |
3244 | */ | |
3245 | ||
a0ed51b3 | 3246 | if (complement) { |
89ebb4a3 | 3247 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
2b9d42f0 | 3248 | UV *cp; |
a0ed51b3 | 3249 | UV nextmin = 0; |
a02a5408 | 3250 | Newx(cp, 2*tlen, UV); |
a0ed51b3 | 3251 | i = 0; |
396482e1 | 3252 | transv = newSVpvs(""); |
a0ed51b3 | 3253 | while (t < tend) { |
9f7f3913 | 3254 | cp[2*i] = utf8n_to_uvuni(t, tend-t, &ulen, flags); |
2b9d42f0 NIS |
3255 | t += ulen; |
3256 | if (t < tend && NATIVE_TO_UTF(*t) == 0xff) { | |
a0ed51b3 | 3257 | t++; |
9f7f3913 | 3258 | cp[2*i+1] = utf8n_to_uvuni(t, tend-t, &ulen, flags); |
2b9d42f0 | 3259 | t += ulen; |
a0ed51b3 | 3260 | } |
2b9d42f0 NIS |
3261 | else { |
3262 | cp[2*i+1] = cp[2*i]; | |
3263 | } | |
3264 | i++; | |
a0ed51b3 | 3265 | } |
2b9d42f0 | 3266 | qsort(cp, i, 2*sizeof(UV), uvcompare); |
a0ed51b3 | 3267 | for (j = 0; j < i; j++) { |
2b9d42f0 | 3268 | UV val = cp[2*j]; |
a0ed51b3 LW |
3269 | diff = val - nextmin; |
3270 | if (diff > 0) { | |
9041c2e3 | 3271 | t = uvuni_to_utf8(tmpbuf,nextmin); |
dfe13c55 | 3272 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 | 3273 | if (diff > 1) { |
2b9d42f0 | 3274 | U8 range_mark = UTF_TO_NATIVE(0xff); |
9041c2e3 | 3275 | t = uvuni_to_utf8(tmpbuf, val - 1); |
2b9d42f0 | 3276 | sv_catpvn(transv, (char *)&range_mark, 1); |
dfe13c55 | 3277 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 LW |
3278 | } |
3279 | } | |
2b9d42f0 | 3280 | val = cp[2*j+1]; |
a0ed51b3 LW |
3281 | if (val >= nextmin) |
3282 | nextmin = val + 1; | |
3283 | } | |
9041c2e3 | 3284 | t = uvuni_to_utf8(tmpbuf,nextmin); |
dfe13c55 | 3285 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
2b9d42f0 NIS |
3286 | { |
3287 | U8 range_mark = UTF_TO_NATIVE(0xff); | |
3288 | sv_catpvn(transv, (char *)&range_mark, 1); | |
3289 | } | |
b851fbc1 JH |
3290 | t = uvuni_to_utf8_flags(tmpbuf, 0x7fffffff, |
3291 | UNICODE_ALLOW_SUPER); | |
dfe13c55 | 3292 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
93524f2b | 3293 | t = (const U8*)SvPVX_const(transv); |
a0ed51b3 LW |
3294 | tlen = SvCUR(transv); |
3295 | tend = t + tlen; | |
455d824a | 3296 | Safefree(cp); |
a0ed51b3 LW |
3297 | } |
3298 | else if (!rlen && !del) { | |
3299 | r = t; rlen = tlen; rend = tend; | |
4757a243 LW |
3300 | } |
3301 | if (!squash) { | |
05d340b8 | 3302 | if ((!rlen && !del) || t == r || |
12ae5dfc | 3303 | (tlen == rlen && memEQ((char *)t, (char *)r, tlen))) |
01ec43d0 | 3304 | { |
4757a243 | 3305 | o->op_private |= OPpTRANS_IDENTICAL; |
01ec43d0 | 3306 | } |
a0ed51b3 LW |
3307 | } |
3308 | ||
3309 | while (t < tend || tfirst <= tlast) { | |
3310 | /* see if we need more "t" chars */ | |
3311 | if (tfirst > tlast) { | |
9f7f3913 | 3312 | tfirst = (I32)utf8n_to_uvuni(t, tend - t, &ulen, flags); |
a0ed51b3 | 3313 | t += ulen; |
2b9d42f0 | 3314 | if (t < tend && NATIVE_TO_UTF(*t) == 0xff) { /* illegal utf8 val indicates range */ |
ba210ebe | 3315 | t++; |
9f7f3913 | 3316 | tlast = (I32)utf8n_to_uvuni(t, tend - t, &ulen, flags); |
a0ed51b3 LW |
3317 | t += ulen; |
3318 | } | |
3319 | else | |
3320 | tlast = tfirst; | |
3321 | } | |
3322 | ||
3323 | /* now see if we need more "r" chars */ | |
3324 | if (rfirst > rlast) { | |
3325 | if (r < rend) { | |
9f7f3913 | 3326 | rfirst = (I32)utf8n_to_uvuni(r, rend - r, &ulen, flags); |
a0ed51b3 | 3327 | r += ulen; |
2b9d42f0 | 3328 | if (r < rend && NATIVE_TO_UTF(*r) == 0xff) { /* illegal utf8 val indicates range */ |
ba210ebe | 3329 | r++; |
9f7f3913 | 3330 | rlast = (I32)utf8n_to_uvuni(r, rend - r, &ulen, flags); |
a0ed51b3 LW |
3331 | r += ulen; |
3332 | } | |
3333 | else | |
3334 | rlast = rfirst; | |
3335 | } | |
3336 | else { | |
3337 | if (!havefinal++) | |
3338 | final = rlast; | |
3339 | rfirst = rlast = 0xffffffff; | |
3340 | } | |
3341 | } | |
3342 | ||
3343 | /* now see which range will peter our first, if either. */ | |
3344 | tdiff = tlast - tfirst; | |
3345 | rdiff = rlast - rfirst; | |
3346 | ||
3347 | if (tdiff <= rdiff) | |
3348 | diff = tdiff; | |
3349 | else | |
3350 | diff = rdiff; | |
3351 | ||
3352 | if (rfirst == 0xffffffff) { | |
3353 | diff = tdiff; /* oops, pretend rdiff is infinite */ | |
3354 | if (diff > 0) | |
894356b3 GS |
3355 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t%04lx\tXXXX\n", |
3356 | (long)tfirst, (long)tlast); | |
a0ed51b3 | 3357 | else |
894356b3 | 3358 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t\tXXXX\n", (long)tfirst); |
a0ed51b3 LW |
3359 | } |
3360 | else { | |
3361 | if (diff > 0) | |
894356b3 GS |
3362 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t%04lx\t%04lx\n", |
3363 | (long)tfirst, (long)(tfirst + diff), | |
3364 | (long)rfirst); | |
a0ed51b3 | 3365 | else |
894356b3 GS |
3366 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t\t%04lx\n", |
3367 | (long)tfirst, (long)rfirst); | |
a0ed51b3 LW |
3368 | |
3369 | if (rfirst + diff > max) | |
3370 | max = rfirst + diff; | |
9b877dbb | 3371 | if (!grows) |
45005bfb JH |
3372 | grows = (tfirst < rfirst && |
3373 | UNISKIP(tfirst) < UNISKIP(rfirst + diff)); | |
3374 | rfirst += diff + 1; | |
a0ed51b3 LW |
3375 | } |
3376 | tfirst += diff + 1; | |
3377 | } | |
3378 | ||
3379 | none = ++max; | |
3380 | if (del) | |
3381 | del = ++max; | |
3382 | ||
3383 | if (max > 0xffff) | |
3384 | bits = 32; | |
3385 | else if (max > 0xff) | |
3386 | bits = 16; | |
3387 | else | |
3388 | bits = 8; | |
3389 | ||
ea71c68d | 3390 | PerlMemShared_free(cPVOPo->op_pv); |
b3123a61 | 3391 | cPVOPo->op_pv = NULL; |
043e41b8 | 3392 | |
ad64d0ec | 3393 | swash = MUTABLE_SV(swash_init("utf8", "", listsv, bits, none)); |
043e41b8 DM |
3394 | #ifdef USE_ITHREADS |
3395 | cPADOPo->op_padix = pad_alloc(OP_TRANS, SVs_PADTMP); | |
3396 | SvREFCNT_dec(PAD_SVl(cPADOPo->op_padix)); | |
3397 | PAD_SETSV(cPADOPo->op_padix, swash); | |
3398 | SvPADTMP_on(swash); | |
a5446a64 | 3399 | SvREADONLY_on(swash); |
043e41b8 DM |
3400 | #else |
3401 | cSVOPo->op_sv = swash; | |
3402 | #endif | |
a0ed51b3 | 3403 | SvREFCNT_dec(listsv); |
b37c2d43 | 3404 | SvREFCNT_dec(transv); |
a0ed51b3 | 3405 | |
45005bfb | 3406 | if (!del && havefinal && rlen) |
85fbaab2 | 3407 | (void)hv_store(MUTABLE_HV(SvRV(swash)), "FINAL", 5, |
b448e4fe | 3408 | newSVuv((UV)final), 0); |
a0ed51b3 | 3409 | |
9b877dbb | 3410 | if (grows) |
a0ed51b3 LW |
3411 | o->op_private |= OPpTRANS_GROWS; |
3412 | ||
b37c2d43 AL |
3413 | Safefree(tsave); |
3414 | Safefree(rsave); | |
9b877dbb | 3415 | |
eb8433b7 NC |
3416 | #ifdef PERL_MAD |
3417 | op_getmad(expr,o,'e'); | |
3418 | op_getmad(repl,o,'r'); | |
3419 | #else | |
a0ed51b3 LW |
3420 | op_free(expr); |
3421 | op_free(repl); | |
eb8433b7 | 3422 | #endif |
a0ed51b3 LW |
3423 | return o; |
3424 | } | |
3425 | ||
3426 | tbl = (short*)cPVOPo->op_pv; | |
79072805 LW |
3427 | if (complement) { |
3428 | Zero(tbl, 256, short); | |
eb160463 | 3429 | for (i = 0; i < (I32)tlen; i++) |
ec49126f | 3430 | tbl[t[i]] = -1; |
79072805 LW |
3431 | for (i = 0, j = 0; i < 256; i++) { |
3432 | if (!tbl[i]) { | |
eb160463 | 3433 | if (j >= (I32)rlen) { |
a0ed51b3 | 3434 | if (del) |
79072805 LW |
3435 | tbl[i] = -2; |
3436 | else if (rlen) | |
ec49126f | 3437 | tbl[i] = r[j-1]; |
79072805 | 3438 | else |
eb160463 | 3439 | tbl[i] = (short)i; |
79072805 | 3440 | } |
9b877dbb IH |
3441 | else { |
3442 | if (i < 128 && r[j] >= 128) | |
3443 | grows = 1; | |
ec49126f | 3444 | tbl[i] = r[j++]; |
9b877dbb | 3445 | } |
79072805 LW |
3446 | } |
3447 | } | |
05d340b8 JH |
3448 | if (!del) { |
3449 | if (!rlen) { | |
3450 | j = rlen; | |
3451 | if (!squash) | |
3452 | o->op_private |= OPpTRANS_IDENTICAL; | |
3453 | } | |
eb160463 | 3454 | else if (j >= (I32)rlen) |
05d340b8 | 3455 | j = rlen - 1; |
10db182f | 3456 | else { |
aa1f7c5b JH |
3457 | tbl = |
3458 | (short *) | |
3459 | PerlMemShared_realloc(tbl, | |
3460 | (0x101+rlen-j) * sizeof(short)); | |
10db182f YO |
3461 | cPVOPo->op_pv = (char*)tbl; |
3462 | } | |
585ec06d | 3463 | tbl[0x100] = (short)(rlen - j); |
eb160463 | 3464 | for (i=0; i < (I32)rlen - j; i++) |
8973db79 JH |
3465 | tbl[0x101+i] = r[j+i]; |
3466 | } | |
79072805 LW |
3467 | } |
3468 | else { | |
a0ed51b3 | 3469 | if (!rlen && !del) { |
79072805 | 3470 | r = t; rlen = tlen; |
5d06d08e | 3471 | if (!squash) |
4757a243 | 3472 | o->op_private |= OPpTRANS_IDENTICAL; |
79072805 | 3473 | } |
94bfe852 RGS |
3474 | else if (!squash && rlen == tlen && memEQ((char*)t, (char*)r, tlen)) { |
3475 | o->op_private |= OPpTRANS_IDENTICAL; | |
3476 | } | |
79072805 LW |
3477 | for (i = 0; i < 256; i++) |
3478 | tbl[i] = -1; | |
eb160463 GS |
3479 | for (i = 0, j = 0; i < (I32)tlen; i++,j++) { |
3480 | if (j >= (I32)rlen) { | |
a0ed51b3 | 3481 | if (del) { |
ec49126f | 3482 | if (tbl[t[i]] == -1) |
3483 | tbl[t[i]] = -2; | |
79072805 LW |
3484 | continue; |
3485 | } | |
3486 | --j; | |
3487 | } | |
9b877dbb IH |
3488 | if (tbl[t[i]] == -1) { |
3489 | if (t[i] < 128 && r[j] >= 128) | |
3490 | grows = 1; | |
ec49126f | 3491 | tbl[t[i]] = r[j]; |
9b877dbb | 3492 | } |
79072805 LW |
3493 | } |
3494 | } | |
b08e453b | 3495 | |
a2a5de95 NC |
3496 | if(del && rlen == tlen) { |
3497 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), "Useless use of /d modifier in transliteration operator"); | |
3498 | } else if(rlen > tlen) { | |
3499 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), "Replacement list is longer than search list"); | |
b08e453b RB |
3500 | } |
3501 | ||
9b877dbb IH |
3502 | if (grows) |
3503 | o->op_private |= OPpTRANS_GROWS; | |
eb8433b7 NC |
3504 | #ifdef PERL_MAD |
3505 | op_getmad(expr,o,'e'); | |
3506 | op_getmad(repl,o,'r'); | |
3507 | #else | |
79072805 LW |
3508 | op_free(expr); |
3509 | op_free(repl); | |
eb8433b7 | 3510 | #endif |
79072805 | 3511 | |
11343788 | 3512 | return o; |
79072805 LW |
3513 | } |
3514 | ||
3515 | OP * | |
864dbfa3 | 3516 | Perl_newPMOP(pTHX_ I32 type, I32 flags) |
79072805 | 3517 | { |
27da23d5 | 3518 | dVAR; |
79072805 LW |
3519 | PMOP *pmop; |
3520 | ||
e69777c1 GG |
3521 | assert((PL_opargs[type] & OA_CLASS_MASK) == OA_PMOP); |
3522 | ||
b7dc083c | 3523 | NewOp(1101, pmop, 1, PMOP); |
eb160463 | 3524 | pmop->op_type = (OPCODE)type; |
22c35a8c | 3525 | pmop->op_ppaddr = PL_ppaddr[type]; |
eb160463 GS |
3526 | pmop->op_flags = (U8)flags; |
3527 | pmop->op_private = (U8)(0 | (flags >> 8)); | |
79072805 | 3528 | |
3280af22 | 3529 | if (PL_hints & HINT_RE_TAINT) |
c737faaf | 3530 | pmop->op_pmflags |= PMf_RETAINT; |
3280af22 | 3531 | if (PL_hints & HINT_LOCALE) |
c737faaf YO |
3532 | pmop->op_pmflags |= PMf_LOCALE; |
3533 | ||
36477c24 | 3534 | |
debc9467 | 3535 | #ifdef USE_ITHREADS |
402d2eb1 NC |
3536 | assert(SvPOK(PL_regex_pad[0])); |
3537 | if (SvCUR(PL_regex_pad[0])) { | |
3538 | /* Pop off the "packed" IV from the end. */ | |
3539 | SV *const repointer_list = PL_regex_pad[0]; | |
3540 | const char *p = SvEND(repointer_list) - sizeof(IV); | |
3541 | const IV offset = *((IV*)p); | |
3542 | ||
3543 | assert(SvCUR(repointer_list) % sizeof(IV) == 0); | |
3544 | ||
3545 | SvEND_set(repointer_list, p); | |
3546 | ||
110f3028 | 3547 | pmop->op_pmoffset = offset; |
14a49a24 NC |
3548 | /* This slot should be free, so assert this: */ |
3549 | assert(PL_regex_pad[offset] == &PL_sv_undef); | |
551405c4 | 3550 | } else { |
14a49a24 | 3551 | SV * const repointer = &PL_sv_undef; |
9a8b6709 | 3552 | av_push(PL_regex_padav, repointer); |
551405c4 AL |
3553 | pmop->op_pmoffset = av_len(PL_regex_padav); |
3554 | PL_regex_pad = AvARRAY(PL_regex_padav); | |
13137afc | 3555 | } |
debc9467 | 3556 | #endif |
1eb1540c | 3557 | |
463d09e6 | 3558 | return CHECKOP(type, pmop); |
79072805 LW |
3559 | } |
3560 | ||
131b3ad0 DM |
3561 | /* Given some sort of match op o, and an expression expr containing a |
3562 | * pattern, either compile expr into a regex and attach it to o (if it's | |
3563 | * constant), or convert expr into a runtime regcomp op sequence (if it's | |
3564 | * not) | |
3565 | * | |
3566 | * isreg indicates that the pattern is part of a regex construct, eg | |
3567 | * $x =~ /pattern/ or split /pattern/, as opposed to $x =~ $pattern or | |
3568 | * split "pattern", which aren't. In the former case, expr will be a list | |
3569 | * if the pattern contains more than one term (eg /a$b/) or if it contains | |
3570 | * a replacement, ie s/// or tr///. | |
3571 | */ | |
3572 | ||
79072805 | 3573 | OP * |
131b3ad0 | 3574 | Perl_pmruntime(pTHX_ OP *o, OP *expr, bool isreg) |
79072805 | 3575 | { |
27da23d5 | 3576 | dVAR; |
79072805 LW |
3577 | PMOP *pm; |
3578 | LOGOP *rcop; | |
ce862d02 | 3579 | I32 repl_has_vars = 0; |
5f66b61c | 3580 | OP* repl = NULL; |
131b3ad0 DM |
3581 | bool reglist; |
3582 | ||
7918f24d NC |
3583 | PERL_ARGS_ASSERT_PMRUNTIME; |
3584 | ||
131b3ad0 DM |
3585 | if (o->op_type == OP_SUBST || o->op_type == OP_TRANS) { |
3586 | /* last element in list is the replacement; pop it */ | |
3587 | OP* kid; | |
3588 | repl = cLISTOPx(expr)->op_last; | |
3589 | kid = cLISTOPx(expr)->op_first; | |
3590 | while (kid->op_sibling != repl) | |
3591 | kid = kid->op_sibling; | |
5f66b61c | 3592 | kid->op_sibling = NULL; |
131b3ad0 DM |
3593 | cLISTOPx(expr)->op_last = kid; |
3594 | } | |
79072805 | 3595 | |
131b3ad0 DM |
3596 | if (isreg && expr->op_type == OP_LIST && |
3597 | cLISTOPx(expr)->op_first->op_sibling == cLISTOPx(expr)->op_last) | |
3598 | { | |
3599 | /* convert single element list to element */ | |
0bd48802 | 3600 | OP* const oe = expr; |
131b3ad0 | 3601 | expr = cLISTOPx(oe)->op_first->op_sibling; |
5f66b61c AL |
3602 | cLISTOPx(oe)->op_first->op_sibling = NULL; |
3603 | cLISTOPx(oe)->op_last = NULL; | |
131b3ad0 DM |
3604 | op_free(oe); |
3605 | } | |
3606 | ||
3607 | if (o->op_type == OP_TRANS) { | |
11343788 | 3608 | return pmtrans(o, expr, repl); |
131b3ad0 DM |
3609 | } |
3610 | ||
3611 | reglist = isreg && expr->op_type == OP_LIST; | |
3612 | if (reglist) | |
3613 | op_null(expr); | |
79072805 | 3614 | |
3280af22 | 3615 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 3616 | pm = (PMOP*)o; |
79072805 LW |
3617 | |
3618 | if (expr->op_type == OP_CONST) { | |
b9ad30b4 | 3619 | SV *pat = ((SVOP*)expr)->op_sv; |
c737faaf | 3620 | U32 pm_flags = pm->op_pmflags & PMf_COMPILETIME; |
5c144d81 | 3621 | |
0ac6acae AB |
3622 | if (o->op_flags & OPf_SPECIAL) |
3623 | pm_flags |= RXf_SPLIT; | |
5c144d81 | 3624 | |
b9ad30b4 NC |
3625 | if (DO_UTF8(pat)) { |
3626 | assert (SvUTF8(pat)); | |
3627 | } else if (SvUTF8(pat)) { | |
3628 | /* Not doing UTF-8, despite what the SV says. Is this only if we're | |
3629 | trapped in use 'bytes'? */ | |
3630 | /* Make a copy of the octet sequence, but without the flag on, as | |
3631 | the compiler now honours the SvUTF8 flag on pat. */ | |
3632 | STRLEN len; | |
3633 | const char *const p = SvPV(pat, len); | |
3634 | pat = newSVpvn_flags(p, len, SVs_TEMP); | |
3635 | } | |
0ac6acae | 3636 | |
3ab4a224 | 3637 | PM_SETRE(pm, CALLREGCOMP(pat, pm_flags)); |
c737faaf | 3638 | |
eb8433b7 NC |
3639 | #ifdef PERL_MAD |
3640 | op_getmad(expr,(OP*)pm,'e'); | |
3641 | #else | |
79072805 | 3642 | op_free(expr); |
eb8433b7 | 3643 | #endif |
79072805 LW |
3644 | } |
3645 | else { | |
3280af22 | 3646 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) |
1c846c1f | 3647 | expr = newUNOP((!(PL_hints & HINT_RE_EVAL) |
2cd61cdb IZ |
3648 | ? OP_REGCRESET |
3649 | : OP_REGCMAYBE),0,expr); | |
463ee0b2 | 3650 | |
b7dc083c | 3651 | NewOp(1101, rcop, 1, LOGOP); |
79072805 | 3652 | rcop->op_type = OP_REGCOMP; |
22c35a8c | 3653 | rcop->op_ppaddr = PL_ppaddr[OP_REGCOMP]; |
79072805 | 3654 | rcop->op_first = scalar(expr); |
131b3ad0 DM |
3655 | rcop->op_flags |= OPf_KIDS |
3656 | | ((PL_hints & HINT_RE_EVAL) ? OPf_SPECIAL : 0) | |
3657 | | (reglist ? OPf_STACKED : 0); | |
79072805 | 3658 | rcop->op_private = 1; |
11343788 | 3659 | rcop->op_other = o; |
131b3ad0 DM |
3660 | if (reglist) |
3661 | rcop->op_targ = pad_alloc(rcop->op_type, SVs_PADTMP); | |
3662 | ||
b5c19bd7 DM |
3663 | /* /$x/ may cause an eval, since $x might be qr/(?{..})/ */ |
3664 | PL_cv_has_eval = 1; | |
79072805 LW |
3665 | |
3666 | /* establish postfix order */ | |
3280af22 | 3667 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) { |
463ee0b2 LW |
3668 | LINKLIST(expr); |
3669 | rcop->op_next = expr; | |
3670 | ((UNOP*)expr)->op_first->op_next = (OP*)rcop; | |
3671 | } | |
3672 | else { | |
3673 | rcop->op_next = LINKLIST(expr); | |
3674 | expr->op_next = (OP*)rcop; | |
3675 | } | |
79072805 | 3676 | |
11343788 | 3677 | prepend_elem(o->op_type, scalar((OP*)rcop), o); |
79072805 LW |
3678 | } |
3679 | ||
3680 | if (repl) { | |
748a9306 | 3681 | OP *curop; |
0244c3a4 | 3682 | if (pm->op_pmflags & PMf_EVAL) { |
6136c704 | 3683 | curop = NULL; |
670a9cb2 DM |
3684 | if (CopLINE(PL_curcop) < (line_t)PL_parser->multi_end) |
3685 | CopLINE_set(PL_curcop, (line_t)PL_parser->multi_end); | |
0244c3a4 | 3686 | } |
748a9306 LW |
3687 | else if (repl->op_type == OP_CONST) |
3688 | curop = repl; | |
79072805 | 3689 | else { |
c445ea15 | 3690 | OP *lastop = NULL; |
79072805 | 3691 | for (curop = LINKLIST(repl); curop!=repl; curop = LINKLIST(curop)) { |
e80b829c | 3692 | if (curop->op_type == OP_SCOPE |
10250113 | 3693 | || curop->op_type == OP_LEAVE |
e80b829c | 3694 | || (PL_opargs[curop->op_type] & OA_DANGEROUS)) { |
79072805 | 3695 | if (curop->op_type == OP_GV) { |
6136c704 | 3696 | GV * const gv = cGVOPx_gv(curop); |
ce862d02 | 3697 | repl_has_vars = 1; |
f702bf4a | 3698 | if (strchr("&`'123456789+-\016\022", *GvENAME(gv))) |
79072805 LW |
3699 | break; |
3700 | } | |
3701 | else if (curop->op_type == OP_RV2CV) | |
3702 | break; | |
3703 | else if (curop->op_type == OP_RV2SV || | |
3704 | curop->op_type == OP_RV2AV || | |
3705 | curop->op_type == OP_RV2HV || | |
3706 | curop->op_type == OP_RV2GV) { | |
3707 | if (lastop && lastop->op_type != OP_GV) /*funny deref?*/ | |
3708 | break; | |
3709 | } | |
748a9306 LW |
3710 | else if (curop->op_type == OP_PADSV || |
3711 | curop->op_type == OP_PADAV || | |
3712 | curop->op_type == OP_PADHV || | |
e80b829c RGS |
3713 | curop->op_type == OP_PADANY) |
3714 | { | |
ce862d02 | 3715 | repl_has_vars = 1; |
748a9306 | 3716 | } |
1167e5da | 3717 | else if (curop->op_type == OP_PUSHRE) |
6f207bd3 | 3718 | NOOP; /* Okay here, dangerous in newASSIGNOP */ |
79072805 LW |
3719 | else |
3720 | break; | |
3721 | } | |
3722 | lastop = curop; | |
3723 | } | |
748a9306 | 3724 | } |
ce862d02 | 3725 | if (curop == repl |
e80b829c RGS |
3726 | && !(repl_has_vars |
3727 | && (!PM_GETRE(pm) | |
07bc277f | 3728 | || RX_EXTFLAGS(PM_GETRE(pm)) & RXf_EVAL_SEEN))) |
3be69782 | 3729 | { |
748a9306 | 3730 | pm->op_pmflags |= PMf_CONST; /* const for long enough */ |
11343788 | 3731 | prepend_elem(o->op_type, scalar(repl), o); |
748a9306 LW |
3732 | } |
3733 | else { | |
aaa362c4 | 3734 | if (curop == repl && !PM_GETRE(pm)) { /* Has variables. */ |
ce862d02 | 3735 | pm->op_pmflags |= PMf_MAYBE_CONST; |
ce862d02 | 3736 | } |
b7dc083c | 3737 | NewOp(1101, rcop, 1, LOGOP); |
748a9306 | 3738 | rcop->op_type = OP_SUBSTCONT; |
22c35a8c | 3739 | rcop->op_ppaddr = PL_ppaddr[OP_SUBSTCONT]; |
748a9306 LW |
3740 | rcop->op_first = scalar(repl); |
3741 | rcop->op_flags |= OPf_KIDS; | |
3742 | rcop->op_private = 1; | |
11343788 | 3743 | rcop->op_other = o; |
748a9306 LW |
3744 | |
3745 | /* establish postfix order */ | |
3746 | rcop->op_next = LINKLIST(repl); | |
3747 | repl->op_next = (OP*)rcop; | |
3748 | ||
20e98b0f | 3749 | pm->op_pmreplrootu.op_pmreplroot = scalar((OP*)rcop); |
29f2e912 NC |
3750 | assert(!(pm->op_pmflags & PMf_ONCE)); |
3751 | pm->op_pmstashstartu.op_pmreplstart = LINKLIST(rcop); | |
748a9306 | 3752 | rcop->op_next = 0; |
79072805 LW |
3753 | } |
3754 | } | |
3755 | ||
3756 | return (OP*)pm; | |
3757 | } | |
3758 | ||
3759 | OP * | |
864dbfa3 | 3760 | Perl_newSVOP(pTHX_ I32 type, I32 flags, SV *sv) |
79072805 | 3761 | { |
27da23d5 | 3762 | dVAR; |
79072805 | 3763 | SVOP *svop; |
7918f24d NC |
3764 | |
3765 | PERL_ARGS_ASSERT_NEWSVOP; | |
3766 | ||
e69777c1 GG |
3767 | assert((PL_opargs[type] & OA_CLASS_MASK) == OA_SVOP |
3768 | || (PL_opargs[type] & OA_CLASS_MASK) == OA_PVOP_OR_SVOP | |
3769 | || (PL_opargs[type] & OA_CLASS_MASK) == OA_FILESTATOP); | |
3770 | ||
b7dc083c | 3771 | NewOp(1101, svop, 1, SVOP); |
eb160463 | 3772 | svop->op_type = (OPCODE)type; |
22c35a8c | 3773 | svop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
3774 | svop->op_sv = sv; |
3775 | svop->op_next = (OP*)svop; | |
eb160463 | 3776 | svop->op_flags = (U8)flags; |
22c35a8c | 3777 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 3778 | scalar((OP*)svop); |
22c35a8c | 3779 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 3780 | svop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 3781 | return CHECKOP(type, svop); |
79072805 LW |
3782 | } |
3783 | ||
392d04bb | 3784 | #ifdef USE_ITHREADS |
79072805 | 3785 | OP * |
350de78d GS |
3786 | Perl_newPADOP(pTHX_ I32 type, I32 flags, SV *sv) |
3787 | { | |
27da23d5 | 3788 | dVAR; |
350de78d | 3789 | PADOP *padop; |
7918f24d NC |
3790 | |
3791 | PERL_ARGS_ASSERT_NEWPADOP; | |
3792 | ||
e69777c1 GG |
3793 | assert((PL_opargs[type] & OA_CLASS_MASK) == OA_SVOP |
3794 | || (PL_opargs[type] & OA_CLASS_MASK) == OA_PVOP_OR_SVOP | |
3795 | || (PL_opargs[type] & OA_CLASS_MASK) == OA_FILESTATOP); | |
3796 | ||
350de78d | 3797 | NewOp(1101, padop, 1, PADOP); |
eb160463 | 3798 | padop->op_type = (OPCODE)type; |
350de78d GS |
3799 | padop->op_ppaddr = PL_ppaddr[type]; |
3800 | padop->op_padix = pad_alloc(type, SVs_PADTMP); | |
dd2155a4 DM |
3801 | SvREFCNT_dec(PAD_SVl(padop->op_padix)); |
3802 | PAD_SETSV(padop->op_padix, sv); | |
58182927 NC |
3803 | assert(sv); |
3804 | SvPADTMP_on(sv); | |
350de78d | 3805 | padop->op_next = (OP*)padop; |
eb160463 | 3806 | padop->op_flags = (U8)flags; |
350de78d GS |
3807 | if (PL_opargs[type] & OA_RETSCALAR) |
3808 | scalar((OP*)padop); | |
3809 | if (PL_opargs[type] & OA_TARGET) | |
3810 | padop->op_targ = pad_alloc(type, SVs_PADTMP); | |
3811 | return CHECKOP(type, padop); | |
3812 | } | |
392d04bb | 3813 | #endif |
350de78d GS |
3814 | |
3815 | OP * | |
864dbfa3 | 3816 | Perl_newGVOP(pTHX_ I32 type, I32 flags, GV *gv) |
79072805 | 3817 | { |
27da23d5 | 3818 | dVAR; |
7918f24d NC |
3819 | |
3820 | PERL_ARGS_ASSERT_NEWGVOP; | |
3821 | ||
350de78d | 3822 | #ifdef USE_ITHREADS |
58182927 | 3823 | GvIN_PAD_on(gv); |
ff8997d7 | 3824 | return newPADOP(type, flags, SvREFCNT_inc_simple_NN(gv)); |
350de78d | 3825 | #else |
ff8997d7 | 3826 | return newSVOP(type, flags, SvREFCNT_inc_simple_NN(gv)); |
350de78d | 3827 | #endif |
79072805 LW |
3828 | } |
3829 | ||
3830 | OP * | |
864dbfa3 | 3831 | Perl_newPVOP(pTHX_ I32 type, I32 flags, char *pv) |
79072805 | 3832 | { |
27da23d5 | 3833 | dVAR; |
79072805 | 3834 | PVOP *pvop; |
e69777c1 GG |
3835 | |
3836 | assert((PL_opargs[type] & OA_CLASS_MASK) == OA_PVOP_OR_SVOP | |
3837 | || (PL_opargs[type] & OA_CLASS_MASK) == OA_LOOPEXOP); | |
3838 | ||
b7dc083c | 3839 | NewOp(1101, pvop, 1, PVOP); |
eb160463 | 3840 | pvop->op_type = (OPCODE)type; |
22c35a8c | 3841 | pvop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
3842 | pvop->op_pv = pv; |
3843 | pvop->op_next = (OP*)pvop; | |
eb160463 | 3844 | pvop->op_flags = (U8)flags; |
22c35a8c | 3845 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 3846 | scalar((OP*)pvop); |
22c35a8c | 3847 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 3848 | pvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 3849 | return CHECKOP(type, pvop); |
79072805 LW |
3850 | } |
3851 | ||
eb8433b7 NC |
3852 | #ifdef PERL_MAD |
3853 | OP* | |
3854 | #else | |
79072805 | 3855 | void |
eb8433b7 | 3856 | #endif |
864dbfa3 | 3857 | Perl_package(pTHX_ OP *o) |
79072805 | 3858 | { |
97aff369 | 3859 | dVAR; |
bf070237 | 3860 | SV *const sv = cSVOPo->op_sv; |
eb8433b7 NC |
3861 | #ifdef PERL_MAD |
3862 | OP *pegop; | |
3863 | #endif | |
79072805 | 3864 | |
7918f24d NC |
3865 | PERL_ARGS_ASSERT_PACKAGE; |
3866 | ||
3280af22 NIS |
3867 | save_hptr(&PL_curstash); |
3868 | save_item(PL_curstname); | |
de11ba31 | 3869 | |
bf070237 | 3870 | PL_curstash = gv_stashsv(sv, GV_ADD); |
e1a479c5 | 3871 | |
bf070237 | 3872 | sv_setsv(PL_curstname, sv); |
de11ba31 | 3873 | |
7ad382f4 | 3874 | PL_hints |= HINT_BLOCK_SCOPE; |
53a7735b DM |
3875 | PL_parser->copline = NOLINE; |
3876 | PL_parser->expect = XSTATE; | |
eb8433b7 NC |
3877 | |
3878 | #ifndef PERL_MAD | |
3879 | op_free(o); | |
3880 | #else | |
3881 | if (!PL_madskills) { | |
3882 | op_free(o); | |
1d866c12 | 3883 | return NULL; |
eb8433b7 NC |
3884 | } |
3885 | ||
3886 | pegop = newOP(OP_NULL,0); | |
3887 | op_getmad(o,pegop,'P'); | |
3888 | return pegop; | |
3889 | #endif | |
79072805 LW |
3890 | } |
3891 | ||
6fa4d285 DG |
3892 | void |
3893 | Perl_package_version( pTHX_ OP *v ) | |
3894 | { | |
3895 | dVAR; | |
458818ec | 3896 | U32 savehints = PL_hints; |
6fa4d285 | 3897 | PERL_ARGS_ASSERT_PACKAGE_VERSION; |
458818ec | 3898 | PL_hints &= ~HINT_STRICT_VARS; |
e92f586b | 3899 | sv_setsv( GvSV(gv_fetchpvs("VERSION", GV_ADDMULTI, SVt_PV)), cSVOPx(v)->op_sv ); |
458818ec | 3900 | PL_hints = savehints; |
6fa4d285 DG |
3901 | op_free(v); |
3902 | } | |
3903 | ||
eb8433b7 NC |
3904 | #ifdef PERL_MAD |
3905 | OP* | |
3906 | #else | |
85e6fe83 | 3907 | void |
eb8433b7 | 3908 | #endif |
88d95a4d | 3909 | Perl_utilize(pTHX_ int aver, I32 floor, OP *version, OP *idop, OP *arg) |
85e6fe83 | 3910 | { |
97aff369 | 3911 | dVAR; |
a0d0e21e | 3912 | OP *pack; |
a0d0e21e | 3913 | OP *imop; |
b1cb66bf | 3914 | OP *veop; |
eb8433b7 NC |
3915 | #ifdef PERL_MAD |
3916 | OP *pegop = newOP(OP_NULL,0); | |
3917 | #endif | |
85e6fe83 | 3918 | |
7918f24d NC |
3919 | PERL_ARGS_ASSERT_UTILIZE; |
3920 | ||
88d95a4d | 3921 | if (idop->op_type != OP_CONST) |
cea2e8a9 | 3922 | Perl_croak(aTHX_ "Module name must be constant"); |
85e6fe83 | 3923 | |
eb8433b7 NC |
3924 | if (PL_madskills) |
3925 | op_getmad(idop,pegop,'U'); | |
3926 | ||
5f66b61c | 3927 | veop = NULL; |
b1cb66bf | 3928 | |
aec46f14 | 3929 | if (version) { |
551405c4 | 3930 | SV * const vesv = ((SVOP*)version)->op_sv; |
b1cb66bf | 3931 | |
eb8433b7 NC |
3932 | if (PL_madskills) |
3933 | op_getmad(version,pegop,'V'); | |
aec46f14 | 3934 | if (!arg && !SvNIOKp(vesv)) { |
b1cb66bf | 3935 | arg = version; |
3936 | } | |
3937 | else { | |
3938 | OP *pack; | |
0f79a09d | 3939 | SV *meth; |
b1cb66bf | 3940 | |
44dcb63b | 3941 | if (version->op_type != OP_CONST || !SvNIOKp(vesv)) |
fe13d51d | 3942 | Perl_croak(aTHX_ "Version number must be a constant number"); |
b1cb66bf | 3943 | |
88d95a4d JH |
3944 | /* Make copy of idop so we don't free it twice */ |
3945 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)idop)->op_sv)); | |
b1cb66bf | 3946 | |
3947 | /* Fake up a method call to VERSION */ | |
18916d0d | 3948 | meth = newSVpvs_share("VERSION"); |
b1cb66bf | 3949 | veop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, |
3950 | append_elem(OP_LIST, | |
0f79a09d GS |
3951 | prepend_elem(OP_LIST, pack, list(version)), |
3952 | newSVOP(OP_METHOD_NAMED, 0, meth))); | |
b1cb66bf | 3953 | } |
3954 | } | |
aeea060c | 3955 | |
a0d0e21e | 3956 | /* Fake up an import/unimport */ |
eb8433b7 NC |
3957 | if (arg && arg->op_type == OP_STUB) { |
3958 | if (PL_madskills) | |
3959 | op_getmad(arg,pegop,'S'); | |
4633a7c4 | 3960 | imop = arg; /* no import on explicit () */ |
eb8433b7 | 3961 | } |
88d95a4d | 3962 | else if (SvNIOKp(((SVOP*)idop)->op_sv)) { |
5f66b61c | 3963 | imop = NULL; /* use 5.0; */ |
468aa647 RGS |
3964 | if (!aver) |
3965 | idop->op_private |= OPpCONST_NOVER; | |
b1cb66bf | 3966 | } |
4633a7c4 | 3967 | else { |
0f79a09d GS |
3968 | SV *meth; |
3969 | ||
eb8433b7 NC |
3970 | if (PL_madskills) |
3971 | op_getmad(arg,pegop,'A'); | |
3972 | ||
88d95a4d JH |
3973 | /* Make copy of idop so we don't free it twice */ |
3974 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)idop)->op_sv)); | |
0f79a09d GS |
3975 | |
3976 | /* Fake up a method call to import/unimport */ | |
427d62a4 | 3977 | meth = aver |
18916d0d | 3978 | ? newSVpvs_share("import") : newSVpvs_share("unimport"); |
4633a7c4 | 3979 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, |
0f79a09d GS |
3980 | append_elem(OP_LIST, |
3981 | prepend_elem(OP_LIST, pack, list(arg)), | |
3982 | newSVOP(OP_METHOD_NAMED, 0, meth))); | |
4633a7c4 LW |
3983 | } |
3984 | ||
a0d0e21e | 3985 | /* Fake up the BEGIN {}, which does its thing immediately. */ |
09bef843 | 3986 | newATTRSUB(floor, |
18916d0d | 3987 | newSVOP(OP_CONST, 0, newSVpvs_share("BEGIN")), |
5f66b61c AL |
3988 | NULL, |
3989 | NULL, | |
a0d0e21e | 3990 | append_elem(OP_LINESEQ, |
b1cb66bf | 3991 | append_elem(OP_LINESEQ, |
bd61b366 SS |
3992 | newSTATEOP(0, NULL, newUNOP(OP_REQUIRE, 0, idop)), |
3993 | newSTATEOP(0, NULL, veop)), | |
3994 | newSTATEOP(0, NULL, imop) )); | |
85e6fe83 | 3995 | |
70f5e4ed JH |
3996 | /* The "did you use incorrect case?" warning used to be here. |
3997 | * The problem is that on case-insensitive filesystems one | |
3998 | * might get false positives for "use" (and "require"): | |
3999 | * "use Strict" or "require CARP" will work. This causes | |
4000 | * portability problems for the script: in case-strict | |
4001 | * filesystems the script will stop working. | |
4002 | * | |
4003 | * The "incorrect case" warning checked whether "use Foo" | |
4004 | * imported "Foo" to your namespace, but that is wrong, too: | |
4005 | * there is no requirement nor promise in the language that | |
4006 | * a Foo.pm should or would contain anything in package "Foo". | |
4007 | * | |
4008 | * There is very little Configure-wise that can be done, either: | |
4009 | * the case-sensitivity of the build filesystem of Perl does not | |
4010 | * help in guessing the case-sensitivity of the runtime environment. | |
4011 | */ | |
18fc9488 | 4012 | |
c305c6a0 | 4013 | PL_hints |= HINT_BLOCK_SCOPE; |
53a7735b DM |
4014 | PL_parser->copline = NOLINE; |
4015 | PL_parser->expect = XSTATE; | |
8ec8fbef | 4016 | PL_cop_seqmax++; /* Purely for B::*'s benefit */ |
eb8433b7 NC |
4017 | |
4018 | #ifdef PERL_MAD | |
4019 | if (!PL_madskills) { | |
4020 | /* FIXME - don't allocate pegop if !PL_madskills */ | |
4021 | op_free(pegop); | |
1d866c12 | 4022 | return NULL; |
eb8433b7 NC |
4023 | } |
4024 | return pegop; | |
4025 | #endif | |
85e6fe83 LW |
4026 | } |
4027 | ||
7d3fb230 | 4028 | /* |
ccfc67b7 JH |
4029 | =head1 Embedding Functions |
4030 | ||
7d3fb230 BS |
4031 | =for apidoc load_module |
4032 | ||
4033 | Loads the module whose name is pointed to by the string part of name. | |
4034 | Note that the actual module name, not its filename, should be given. | |
4035 | Eg, "Foo::Bar" instead of "Foo/Bar.pm". flags can be any of | |
4036 | PERL_LOADMOD_DENY, PERL_LOADMOD_NOIMPORT, or PERL_LOADMOD_IMPORT_OPS | |
4037 | (or 0 for no flags). ver, if specified, provides version semantics | |
4038 | similar to C<use Foo::Bar VERSION>. The optional trailing SV* | |
4039 | arguments can be used to specify arguments to the module's import() | |
76f108ac JD |
4040 | method, similar to C<use Foo::Bar VERSION LIST>. They must be |
4041 | terminated with a final NULL pointer. Note that this list can only | |
4042 | be omitted when the PERL_LOADMOD_NOIMPORT flag has been used. | |
4043 | Otherwise at least a single NULL pointer to designate the default | |
4044 | import list is required. | |
7d3fb230 BS |
4045 | |
4046 | =cut */ | |
4047 | ||
e4783991 GS |
4048 | void |
4049 | Perl_load_module(pTHX_ U32 flags, SV *name, SV *ver, ...) | |
4050 | { | |
4051 | va_list args; | |
7918f24d NC |
4052 | |
4053 | PERL_ARGS_ASSERT_LOAD_MODULE; | |
4054 | ||
e4783991 GS |
4055 | va_start(args, ver); |
4056 | vload_module(flags, name, ver, &args); | |
4057 | va_end(args); | |
4058 | } | |
4059 | ||
4060 | #ifdef PERL_IMPLICIT_CONTEXT | |
4061 | void | |
4062 | Perl_load_module_nocontext(U32 flags, SV *name, SV *ver, ...) | |
4063 | { | |
4064 | dTHX; | |
4065 | va_list args; | |
7918f24d | 4066 | PERL_ARGS_ASSERT_LOAD_MODULE_NOCONTEXT; |
e4783991 GS |
4067 | va_start(args, ver); |
4068 | vload_module(flags, name, ver, &args); | |
4069 | va_end(args); | |
4070 | } | |
4071 | #endif | |
4072 | ||
4073 | void | |
4074 | Perl_vload_module(pTHX_ U32 flags, SV *name, SV *ver, va_list *args) | |
4075 | { | |
97aff369 | 4076 | dVAR; |
551405c4 | 4077 | OP *veop, *imop; |
551405c4 | 4078 | OP * const modname = newSVOP(OP_CONST, 0, name); |
7918f24d NC |
4079 | |
4080 | PERL_ARGS_ASSERT_VLOAD_MODULE; | |
4081 | ||
e4783991 GS |
4082 | modname->op_private |= OPpCONST_BARE; |
4083 | if (ver) { | |
4084 | veop = newSVOP(OP_CONST, 0, ver); | |
4085 | } | |
4086 | else | |
5f66b61c | 4087 | veop = NULL; |
e4783991 GS |
4088 | if (flags & PERL_LOADMOD_NOIMPORT) { |
4089 | imop = sawparens(newNULLLIST()); | |
4090 | } | |
4091 | else if (flags & PERL_LOADMOD_IMPORT_OPS) { | |
4092 | imop = va_arg(*args, OP*); | |
4093 | } | |
4094 | else { | |
4095 | SV *sv; | |
5f66b61c | 4096 | imop = NULL; |
e4783991 GS |
4097 | sv = va_arg(*args, SV*); |
4098 | while (sv) { | |
4099 | imop = append_elem(OP_LIST, imop, newSVOP(OP_CONST, 0, sv)); | |
4100 | sv = va_arg(*args, SV*); | |
4101 | } | |
4102 | } | |
81885997 | 4103 | |
53a7735b DM |
4104 | /* utilize() fakes up a BEGIN { require ..; import ... }, so make sure |
4105 | * that it has a PL_parser to play with while doing that, and also | |
4106 | * that it doesn't mess with any existing parser, by creating a tmp | |
4107 | * new parser with lex_start(). This won't actually be used for much, | |
4108 | * since pp_require() will create another parser for the real work. */ | |
4109 | ||
4110 | ENTER; | |
4111 | SAVEVPTR(PL_curcop); | |
5486870f | 4112 | lex_start(NULL, NULL, FALSE); |
53a7735b DM |
4113 | utilize(!(flags & PERL_LOADMOD_DENY), start_subparse(FALSE, 0), |
4114 | veop, modname, imop); | |
4115 | LEAVE; | |
e4783991 GS |
4116 | } |
4117 | ||
79072805 | 4118 | OP * |
850e8516 | 4119 | Perl_dofile(pTHX_ OP *term, I32 force_builtin) |
78ca652e | 4120 | { |
97aff369 | 4121 | dVAR; |
78ca652e | 4122 | OP *doop; |
a0714e2c | 4123 | GV *gv = NULL; |
78ca652e | 4124 | |
7918f24d NC |
4125 | PERL_ARGS_ASSERT_DOFILE; |
4126 | ||
850e8516 | 4127 | if (!force_builtin) { |
fafc274c | 4128 | gv = gv_fetchpvs("do", GV_NOTQUAL, SVt_PVCV); |
850e8516 | 4129 | if (!(gv && GvCVu(gv) && GvIMPORTED_CV(gv))) { |
a4fc7abc | 4130 | GV * const * const gvp = (GV**)hv_fetchs(PL_globalstash, "do", FALSE); |
a0714e2c | 4131 | gv = gvp ? *gvp : NULL; |
850e8516 RGS |
4132 | } |
4133 | } | |
78ca652e | 4134 | |
b9f751c0 | 4135 | if (gv && GvCVu(gv) && GvIMPORTED_CV(gv)) { |
78ca652e GS |
4136 | doop = ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, |
4137 | append_elem(OP_LIST, term, | |
4138 | scalar(newUNOP(OP_RV2CV, 0, | |
d4c19fe8 | 4139 | newGVOP(OP_GV, 0, gv)))))); |
78ca652e GS |
4140 | } |
4141 | else { | |
4142 | doop = newUNOP(OP_DOFILE, 0, scalar(term)); | |
4143 | } | |
4144 | return doop; | |
4145 | } | |
4146 | ||
4147 | OP * | |
864dbfa3 | 4148 | Perl_newSLICEOP(pTHX_ I32 flags, OP *subscript, OP *listval) |
79072805 LW |
4149 | { |
4150 | return newBINOP(OP_LSLICE, flags, | |
8990e307 LW |
4151 | list(force_list(subscript)), |
4152 | list(force_list(listval)) ); | |
79072805 LW |
4153 | } |
4154 | ||
76e3520e | 4155 | STATIC I32 |
504618e9 | 4156 | S_is_list_assignment(pTHX_ register const OP *o) |
79072805 | 4157 | { |
1496a290 AL |
4158 | unsigned type; |
4159 | U8 flags; | |
4160 | ||
11343788 | 4161 | if (!o) |
79072805 LW |
4162 | return TRUE; |
4163 | ||
1496a290 | 4164 | if ((o->op_type == OP_NULL) && (o->op_flags & OPf_KIDS)) |
11343788 | 4165 | o = cUNOPo->op_first; |
79072805 | 4166 | |
1496a290 AL |
4167 | flags = o->op_flags; |
4168 | type = o->op_type; | |
4169 | if (type == OP_COND_EXPR) { | |
504618e9 AL |
4170 | const I32 t = is_list_assignment(cLOGOPo->op_first->op_sibling); |
4171 | const I32 f = is_list_assignment(cLOGOPo->op_first->op_sibling->op_sibling); | |
79072805 LW |
4172 | |
4173 | if (t && f) | |
4174 | return TRUE; | |
4175 | if (t || f) | |
4176 | yyerror("Assignment to both a list and a scalar"); | |
4177 | return FALSE; | |
4178 | } | |
4179 | ||
1496a290 AL |
4180 | if (type == OP_LIST && |
4181 | (flags & OPf_WANT) == OPf_WANT_SCALAR && | |
95f0a2f1 SB |
4182 | o->op_private & OPpLVAL_INTRO) |
4183 | return FALSE; | |
4184 | ||
1496a290 AL |
4185 | if (type == OP_LIST || flags & OPf_PARENS || |
4186 | type == OP_RV2AV || type == OP_RV2HV || | |
4187 | type == OP_ASLICE || type == OP_HSLICE) | |
79072805 LW |
4188 | return TRUE; |
4189 | ||
1496a290 | 4190 | if (type == OP_PADAV || type == OP_PADHV) |
93a17b20 LW |
4191 | return TRUE; |
4192 | ||
1496a290 | 4193 | if (type == OP_RV2SV) |
79072805 LW |
4194 | return FALSE; |
4195 | ||
4196 | return FALSE; | |
4197 | } | |
4198 | ||
4199 | OP * | |
864dbfa3 | 4200 | Perl_newASSIGNOP(pTHX_ I32 flags, OP *left, I32 optype, OP *right) |
79072805 | 4201 | { |
97aff369 | 4202 | dVAR; |
11343788 | 4203 | OP *o; |
79072805 | 4204 | |
a0d0e21e | 4205 | if (optype) { |
c963b151 | 4206 | if (optype == OP_ANDASSIGN || optype == OP_ORASSIGN || optype == OP_DORASSIGN) { |
a0d0e21e LW |
4207 | return newLOGOP(optype, 0, |
4208 | mod(scalar(left), optype), | |
4209 | newUNOP(OP_SASSIGN, 0, scalar(right))); | |
4210 | } | |
4211 | else { | |
4212 | return newBINOP(optype, OPf_STACKED, | |
4213 | mod(scalar(left), optype), scalar(right)); | |
4214 | } | |
4215 | } | |
4216 | ||
504618e9 | 4217 | if (is_list_assignment(left)) { |
6dbe9451 NC |
4218 | static const char no_list_state[] = "Initialization of state variables" |
4219 | " in list context currently forbidden"; | |
10c8fecd | 4220 | OP *curop; |
fafafbaf | 4221 | bool maybe_common_vars = TRUE; |
10c8fecd | 4222 | |
3280af22 | 4223 | PL_modcount = 0; |
dbfe47cf RD |
4224 | /* Grandfathering $[ assignment here. Bletch.*/ |
4225 | /* Only simple assignments like C<< ($[) = 1 >> are allowed */ | |
fe5bfecd | 4226 | PL_eval_start = (left->op_type == OP_CONST) ? right : NULL; |
463ee0b2 | 4227 | left = mod(left, OP_AASSIGN); |
3280af22 NIS |
4228 | if (PL_eval_start) |
4229 | PL_eval_start = 0; | |
dbfe47cf | 4230 | else if (left->op_type == OP_CONST) { |
eb8433b7 | 4231 | /* FIXME for MAD */ |
dbfe47cf RD |
4232 | /* Result of assignment is always 1 (or we'd be dead already) */ |
4233 | return newSVOP(OP_CONST, 0, newSViv(1)); | |
a0d0e21e | 4234 | } |
10c8fecd GS |
4235 | curop = list(force_list(left)); |
4236 | o = newBINOP(OP_AASSIGN, flags, list(force_list(right)), curop); | |
eb160463 | 4237 | o->op_private = (U8)(0 | (flags >> 8)); |
dd2155a4 | 4238 | |
fafafbaf RD |
4239 | if ((left->op_type == OP_LIST |
4240 | || (left->op_type == OP_NULL && left->op_targ == OP_LIST))) | |
4241 | { | |
4242 | OP* lop = ((LISTOP*)left)->op_first; | |
4243 | maybe_common_vars = FALSE; | |
4244 | while (lop) { | |
4245 | if (lop->op_type == OP_PADSV || | |
4246 | lop->op_type == OP_PADAV || | |
4247 | lop->op_type == OP_PADHV || | |
4248 | lop->op_type == OP_PADANY) { | |
4249 | if (!(lop->op_private & OPpLVAL_INTRO)) | |
4250 | maybe_common_vars = TRUE; | |
4251 | ||
4252 | if (lop->op_private & OPpPAD_STATE) { | |
4253 | if (left->op_private & OPpLVAL_INTRO) { | |
4254 | /* Each variable in state($a, $b, $c) = ... */ | |
4255 | } | |
4256 | else { | |
4257 | /* Each state variable in | |
4258 | (state $a, my $b, our $c, $d, undef) = ... */ | |
4259 | } | |
4260 | yyerror(no_list_state); | |
4261 | } else { | |
4262 | /* Each my variable in | |
4263 | (state $a, my $b, our $c, $d, undef) = ... */ | |
4264 | } | |
4265 | } else if (lop->op_type == OP_UNDEF || | |
4266 | lop->op_type == OP_PUSHMARK) { | |
4267 | /* undef may be interesting in | |
4268 | (state $a, undef, state $c) */ | |
4269 | } else { | |
4270 | /* Other ops in the list. */ | |
4271 | maybe_common_vars = TRUE; | |
4272 | } | |
4273 | lop = lop->op_sibling; | |
4274 | } | |
4275 | } | |
4276 | else if ((left->op_private & OPpLVAL_INTRO) | |
4277 | && ( left->op_type == OP_PADSV | |
4278 | || left->op_type == OP_PADAV | |
4279 | || left->op_type == OP_PADHV | |
4280 | || left->op_type == OP_PADANY)) | |
4281 | { | |
0f907b96 | 4282 | if (left->op_type == OP_PADSV) maybe_common_vars = FALSE; |
fafafbaf RD |
4283 | if (left->op_private & OPpPAD_STATE) { |
4284 | /* All single variable list context state assignments, hence | |
4285 | state ($a) = ... | |
4286 | (state $a) = ... | |
4287 | state @a = ... | |
4288 | state (@a) = ... | |
4289 | (state @a) = ... | |
4290 | state %a = ... | |
4291 | state (%a) = ... | |
4292 | (state %a) = ... | |
4293 | */ | |
4294 | yyerror(no_list_state); | |
4295 | } | |
4296 | } | |
4297 | ||
dd2155a4 DM |
4298 | /* PL_generation sorcery: |
4299 | * an assignment like ($a,$b) = ($c,$d) is easier than | |
4300 | * ($a,$b) = ($c,$a), since there is no need for temporary vars. | |
4301 | * To detect whether there are common vars, the global var | |
4302 | * PL_generation is incremented for each assign op we compile. | |
4303 | * Then, while compiling the assign op, we run through all the | |
4304 | * variables on both sides of the assignment, setting a spare slot | |
4305 | * in each of them to PL_generation. If any of them already have | |
4306 | * that value, we know we've got commonality. We could use a | |
4307 | * single bit marker, but then we'd have to make 2 passes, first | |
4308 | * to clear the flag, then to test and set it. To find somewhere | |
931b58fb | 4309 | * to store these values, evil chicanery is done with SvUVX(). |
dd2155a4 DM |
4310 | */ |
4311 | ||
fafafbaf | 4312 | if (maybe_common_vars) { |
11343788 | 4313 | OP *lastop = o; |
3280af22 | 4314 | PL_generation++; |
11343788 | 4315 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
22c35a8c | 4316 | if (PL_opargs[curop->op_type] & OA_DANGEROUS) { |
79072805 | 4317 | if (curop->op_type == OP_GV) { |
638eceb6 | 4318 | GV *gv = cGVOPx_gv(curop); |
169d2d72 NC |
4319 | if (gv == PL_defgv |
4320 | || (int)GvASSIGN_GENERATION(gv) == PL_generation) | |
79072805 | 4321 | break; |
169d2d72 | 4322 | GvASSIGN_GENERATION_set(gv, PL_generation); |
79072805 | 4323 | } |
748a9306 LW |
4324 | else if (curop->op_type == OP_PADSV || |
4325 | curop->op_type == OP_PADAV || | |
4326 | curop->op_type == OP_PADHV || | |
dd2155a4 DM |
4327 | curop->op_type == OP_PADANY) |
4328 | { | |
4329 | if (PAD_COMPNAME_GEN(curop->op_targ) | |
92251a1e | 4330 | == (STRLEN)PL_generation) |
748a9306 | 4331 | break; |
b162af07 | 4332 | PAD_COMPNAME_GEN_set(curop->op_targ, PL_generation); |
dd2155a4 | 4333 | |
748a9306 | 4334 | } |
79072805 LW |
4335 | else if (curop->op_type == OP_RV2CV) |
4336 | break; | |
4337 | else if (curop->op_type == OP_RV2SV || | |
4338 | curop->op_type == OP_RV2AV || | |
4339 | curop->op_type == OP_RV2HV || | |
4340 | curop->op_type == OP_RV2GV) { | |
4341 | if (lastop->op_type != OP_GV) /* funny deref? */ | |
4342 | break; | |
4343 | } | |
1167e5da | 4344 | else if (curop->op_type == OP_PUSHRE) { |
b3f5893f | 4345 | #ifdef USE_ITHREADS |
20e98b0f | 4346 | if (((PMOP*)curop)->op_pmreplrootu.op_pmtargetoff) { |
159b6efe | 4347 | GV *const gv = MUTABLE_GV(PAD_SVl(((PMOP*)curop)->op_pmreplrootu.op_pmtargetoff)); |
169d2d72 NC |
4348 | if (gv == PL_defgv |
4349 | || (int)GvASSIGN_GENERATION(gv) == PL_generation) | |
1167e5da | 4350 | break; |
169d2d72 | 4351 | GvASSIGN_GENERATION_set(gv, PL_generation); |
20e98b0f NC |
4352 | } |
4353 | #else | |
4354 | GV *const gv | |
4355 | = ((PMOP*)curop)->op_pmreplrootu.op_pmtargetgv; | |
4356 | if (gv) { | |
4357 | if (gv == PL_defgv | |
4358 | || (int)GvASSIGN_GENERATION(gv) == PL_generation) | |
4359 | break; | |
169d2d72 | 4360 | GvASSIGN_GENERATION_set(gv, PL_generation); |
b2ffa427 | 4361 | } |
20e98b0f | 4362 | #endif |
1167e5da | 4363 | } |
79072805 LW |
4364 | else |
4365 | break; | |
4366 | } | |
4367 | lastop = curop; | |
4368 | } | |
11343788 | 4369 | if (curop != o) |
10c8fecd | 4370 | o->op_private |= OPpASSIGN_COMMON; |
461824dc | 4371 | } |
9fdc7570 | 4372 | |
e9cc17ba | 4373 | if (right && right->op_type == OP_SPLIT && !PL_madskills) { |
1496a290 AL |
4374 | OP* tmpop = ((LISTOP*)right)->op_first; |
4375 | if (tmpop && (tmpop->op_type == OP_PUSHRE)) { | |
551405c4 | 4376 | PMOP * const pm = (PMOP*)tmpop; |
c07a80fd | 4377 | if (left->op_type == OP_RV2AV && |
4378 | !(left->op_private & OPpLVAL_INTRO) && | |
11343788 | 4379 | !(o->op_private & OPpASSIGN_COMMON) ) |
c07a80fd | 4380 | { |
4381 | tmpop = ((UNOP*)left)->op_first; | |
20e98b0f NC |
4382 | if (tmpop->op_type == OP_GV |
4383 | #ifdef USE_ITHREADS | |
4384 | && !pm->op_pmreplrootu.op_pmtargetoff | |
4385 | #else | |
4386 | && !pm->op_pmreplrootu.op_pmtargetgv | |
4387 | #endif | |
4388 | ) { | |
971a9dd3 | 4389 | #ifdef USE_ITHREADS |
20e98b0f NC |
4390 | pm->op_pmreplrootu.op_pmtargetoff |
4391 | = cPADOPx(tmpop)->op_padix; | |
971a9dd3 GS |
4392 | cPADOPx(tmpop)->op_padix = 0; /* steal it */ |
4393 | #else | |
20e98b0f | 4394 | pm->op_pmreplrootu.op_pmtargetgv |
159b6efe | 4395 | = MUTABLE_GV(cSVOPx(tmpop)->op_sv); |
a0714e2c | 4396 | cSVOPx(tmpop)->op_sv = NULL; /* steal it */ |
971a9dd3 | 4397 | #endif |
c07a80fd | 4398 | pm->op_pmflags |= PMf_ONCE; |
11343788 | 4399 | tmpop = cUNOPo->op_first; /* to list (nulled) */ |
c07a80fd | 4400 | tmpop = ((UNOP*)tmpop)->op_first; /* to pushmark */ |
5f66b61c | 4401 | tmpop->op_sibling = NULL; /* don't free split */ |
c07a80fd | 4402 | right->op_next = tmpop->op_next; /* fix starting loc */ |
11343788 | 4403 | op_free(o); /* blow off assign */ |
54310121 | 4404 | right->op_flags &= ~OPf_WANT; |
a5f75d66 | 4405 | /* "I don't know and I don't care." */ |
c07a80fd | 4406 | return right; |
4407 | } | |
4408 | } | |
4409 | else { | |
e6438c1a | 4410 | if (PL_modcount < RETURN_UNLIMITED_NUMBER && |
c07a80fd | 4411 | ((LISTOP*)right)->op_last->op_type == OP_CONST) |
4412 | { | |
4413 | SV *sv = ((SVOP*)((LISTOP*)right)->op_last)->op_sv; | |
b8de32d5 | 4414 | if (SvIOK(sv) && SvIVX(sv) == 0) |
3280af22 | 4415 | sv_setiv(sv, PL_modcount+1); |
c07a80fd | 4416 | } |
4417 | } | |
4418 | } | |
4419 | } | |
11343788 | 4420 | return o; |
79072805 LW |
4421 | } |
4422 | if (!right) | |
4423 | right = newOP(OP_UNDEF, 0); | |
4424 | if (right->op_type == OP_READLINE) { | |
4425 | right->op_flags |= OPf_STACKED; | |
463ee0b2 | 4426 | return newBINOP(OP_NULL, flags, mod(scalar(left), OP_SASSIGN), scalar(right)); |
79072805 | 4427 | } |
a0d0e21e | 4428 | else { |
3280af22 | 4429 | PL_eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ |
11343788 | 4430 | o = newBINOP(OP_SASSIGN, flags, |
463ee0b2 | 4431 | scalar(right), mod(scalar(left), OP_SASSIGN) ); |
3280af22 NIS |
4432 | if (PL_eval_start) |
4433 | PL_eval_start = 0; | |
748a9306 | 4434 | else { |
27aaedc1 | 4435 | if (!PL_madskills) { /* assignment to $[ is ignored when making a mad dump */ |
55b67815 | 4436 | deprecate("assignment to $["); |
27aaedc1 GG |
4437 | op_free(o); |
4438 | o = newSVOP(OP_CONST, 0, newSViv(CopARYBASE_get(&PL_compiling))); | |
4439 | o->op_private |= OPpCONST_ARYBASE; | |
4440 | } | |
a0d0e21e LW |
4441 | } |
4442 | } | |
11343788 | 4443 | return o; |
79072805 LW |
4444 | } |
4445 | ||
4446 | OP * | |
864dbfa3 | 4447 | Perl_newSTATEOP(pTHX_ I32 flags, char *label, OP *o) |
79072805 | 4448 | { |
27da23d5 | 4449 | dVAR; |
e1ec3a88 | 4450 | const U32 seq = intro_my(); |
79072805 LW |
4451 | register COP *cop; |
4452 | ||
b7dc083c | 4453 | NewOp(1101, cop, 1, COP); |
57843af0 | 4454 | if (PERLDB_LINE && CopLINE(PL_curcop) && PL_curstash != PL_debstash) { |
8990e307 | 4455 | cop->op_type = OP_DBSTATE; |
22c35a8c | 4456 | cop->op_ppaddr = PL_ppaddr[ OP_DBSTATE ]; |
8990e307 LW |
4457 | } |
4458 | else { | |
4459 | cop->op_type = OP_NEXTSTATE; | |
22c35a8c | 4460 | cop->op_ppaddr = PL_ppaddr[ OP_NEXTSTATE ]; |
8990e307 | 4461 | } |
eb160463 | 4462 | cop->op_flags = (U8)flags; |
623e6609 | 4463 | CopHINTS_set(cop, PL_hints); |
ff0cee69 | 4464 | #ifdef NATIVE_HINTS |
4465 | cop->op_private |= NATIVE_HINTS; | |
4466 | #endif | |
623e6609 | 4467 | CopHINTS_set(&PL_compiling, CopHINTS_get(cop)); |
79072805 LW |
4468 | cop->op_next = (OP*)cop; |
4469 | ||
bbce6d69 | 4470 | cop->cop_seq = seq; |
7b0bddfa | 4471 | /* CopARYBASE is now "virtual", in that it's stored as a flag bit in |
c28fe1ec NC |
4472 | CopHINTS and a possible value in cop_hints_hash, so no need to copy it. |
4473 | */ | |
72dc9ed5 | 4474 | cop->cop_warnings = DUP_WARNINGS(PL_curcop->cop_warnings); |
c28fe1ec NC |
4475 | cop->cop_hints_hash = PL_curcop->cop_hints_hash; |
4476 | if (cop->cop_hints_hash) { | |
cbb1fbea | 4477 | HINTS_REFCNT_LOCK; |
c28fe1ec | 4478 | cop->cop_hints_hash->refcounted_he_refcnt++; |
cbb1fbea | 4479 | HINTS_REFCNT_UNLOCK; |
b3ca2e83 | 4480 | } |
dca6062a | 4481 | if (label) { |
dca6062a | 4482 | cop->cop_hints_hash |
012da8e5 | 4483 | = Perl_store_cop_label(aTHX_ cop->cop_hints_hash, label); |
dca6062a NC |
4484 | |
4485 | PL_hints |= HINT_BLOCK_SCOPE; | |
4486 | /* It seems that we need to defer freeing this pointer, as other parts | |
4487 | of the grammar end up wanting to copy it after this op has been | |
4488 | created. */ | |
4489 | SAVEFREEPV(label); | |
dca6062a | 4490 | } |
79072805 | 4491 | |
53a7735b | 4492 | if (PL_parser && PL_parser->copline == NOLINE) |
57843af0 | 4493 | CopLINE_set(cop, CopLINE(PL_curcop)); |
79072805 | 4494 | else { |
53a7735b DM |
4495 | CopLINE_set(cop, PL_parser->copline); |
4496 | if (PL_parser) | |
4497 | PL_parser->copline = NOLINE; | |
79072805 | 4498 | } |
57843af0 | 4499 | #ifdef USE_ITHREADS |
f4dd75d9 | 4500 | CopFILE_set(cop, CopFILE(PL_curcop)); /* XXX share in a pvtable? */ |
57843af0 | 4501 | #else |
f4dd75d9 | 4502 | CopFILEGV_set(cop, CopFILEGV(PL_curcop)); |
57843af0 | 4503 | #endif |
11faa288 | 4504 | CopSTASH_set(cop, PL_curstash); |
79072805 | 4505 | |
65269a95 TB |
4506 | if ((PERLDB_LINE || PERLDB_SAVESRC) && PL_curstash != PL_debstash) { |
4507 | /* this line can have a breakpoint - store the cop in IV */ | |
80a702cd RGS |
4508 | AV *av = CopFILEAVx(PL_curcop); |
4509 | if (av) { | |
4510 | SV * const * const svp = av_fetch(av, (I32)CopLINE(cop), FALSE); | |
4511 | if (svp && *svp != &PL_sv_undef ) { | |
4512 | (void)SvIOK_on(*svp); | |
4513 | SvIV_set(*svp, PTR2IV(cop)); | |
4514 | } | |
1eb1540c | 4515 | } |
93a17b20 LW |
4516 | } |
4517 | ||
f6f3a1fe RGS |
4518 | if (flags & OPf_SPECIAL) |
4519 | op_null((OP*)cop); | |
722969e2 | 4520 | return prepend_elem(OP_LINESEQ, (OP*)cop, o); |
79072805 LW |
4521 | } |
4522 | ||
bbce6d69 | 4523 | |
79072805 | 4524 | OP * |
864dbfa3 | 4525 | Perl_newLOGOP(pTHX_ I32 type, I32 flags, OP *first, OP *other) |
79072805 | 4526 | { |
27da23d5 | 4527 | dVAR; |
7918f24d NC |
4528 | |
4529 | PERL_ARGS_ASSERT_NEWLOGOP; | |
4530 | ||
883ffac3 CS |
4531 | return new_logop(type, flags, &first, &other); |
4532 | } | |
4533 | ||
3bd495df | 4534 | STATIC OP * |
71c4dbc3 VP |
4535 | S_search_const(pTHX_ OP *o) |
4536 | { | |
4537 | PERL_ARGS_ASSERT_SEARCH_CONST; | |
4538 | ||
4539 | switch (o->op_type) { | |
4540 | case OP_CONST: | |
4541 | return o; | |
4542 | case OP_NULL: | |
4543 | if (o->op_flags & OPf_KIDS) | |
4544 | return search_const(cUNOPo->op_first); | |
4545 | break; | |
4546 | case OP_LEAVE: | |
4547 | case OP_SCOPE: | |
4548 | case OP_LINESEQ: | |
4549 | { | |
4550 | OP *kid; | |
4551 | if (!(o->op_flags & OPf_KIDS)) | |
4552 | return NULL; | |
4553 | kid = cLISTOPo->op_first; | |
4554 | do { | |
4555 | switch (kid->op_type) { | |
4556 | case OP_ENTER: | |
4557 | case OP_NULL: | |
4558 | case OP_NEXTSTATE: | |
4559 | kid = kid->op_sibling; | |
4560 | break; | |
4561 | default: | |
4562 | if (kid != cLISTOPo->op_last) | |
4563 | return NULL; | |
4564 | goto last; | |
4565 | } | |
4566 | } while (kid); | |
4567 | if (!kid) | |
4568 | kid = cLISTOPo->op_last; | |
4569 | last: | |
4570 | return search_const(kid); | |
4571 | } | |
4572 | } | |
4573 | ||
4574 | return NULL; | |
4575 | } | |
4576 | ||
4577 | STATIC OP * | |
cea2e8a9 | 4578 | S_new_logop(pTHX_ I32 type, I32 flags, OP** firstp, OP** otherp) |
883ffac3 | 4579 | { |
27da23d5 | 4580 | dVAR; |
79072805 | 4581 | LOGOP *logop; |
11343788 | 4582 | OP *o; |
71c4dbc3 VP |
4583 | OP *first; |
4584 | OP *other; | |
4585 | OP *cstop = NULL; | |
edbe35ea | 4586 | int prepend_not = 0; |
79072805 | 4587 | |
7918f24d NC |
4588 | PERL_ARGS_ASSERT_NEW_LOGOP; |
4589 | ||
71c4dbc3 VP |
4590 | first = *firstp; |
4591 | other = *otherp; | |
4592 | ||
a0d0e21e LW |
4593 | if (type == OP_XOR) /* Not short circuit, but here by precedence. */ |
4594 | return newBINOP(type, flags, scalar(first), scalar(other)); | |
4595 | ||
e69777c1 GG |
4596 | assert((PL_opargs[type] & OA_CLASS_MASK) == OA_LOGOP); |
4597 | ||
8990e307 | 4598 | scalarboolean(first); |
edbe35ea | 4599 | /* optimize AND and OR ops that have NOTs as children */ |
68726e16 | 4600 | if (first->op_type == OP_NOT |
b6214b80 | 4601 | && (first->op_flags & OPf_KIDS) |
edbe35ea VP |
4602 | && ((first->op_flags & OPf_SPECIAL) /* unless ($x) { } */ |
4603 | || (other->op_type == OP_NOT)) /* if (!$x && !$y) { } */ | |
b6214b80 | 4604 | && !PL_madskills) { |
79072805 LW |
4605 | if (type == OP_AND || type == OP_OR) { |
4606 | if (type == OP_AND) | |
4607 | type = OP_OR; | |
4608 | else | |
4609 | type = OP_AND; | |
07f3cdf5 | 4610 | op_null(first); |
edbe35ea | 4611 | if (other->op_type == OP_NOT) { /* !a AND|OR !b => !(a OR|AND b) */ |
07f3cdf5 | 4612 | op_null(other); |
edbe35ea VP |
4613 | prepend_not = 1; /* prepend a NOT op later */ |
4614 | } | |
79072805 LW |
4615 | } |
4616 | } | |
71c4dbc3 VP |
4617 | /* search for a constant op that could let us fold the test */ |
4618 | if ((cstop = search_const(first))) { | |
4619 | if (cstop->op_private & OPpCONST_STRICT) | |
4620 | no_bareword_allowed(cstop); | |
a2a5de95 NC |
4621 | else if ((cstop->op_private & OPpCONST_BARE)) |
4622 | Perl_ck_warner(aTHX_ packWARN(WARN_BAREWORD), "Bareword found in conditional"); | |
71c4dbc3 VP |
4623 | if ((type == OP_AND && SvTRUE(((SVOP*)cstop)->op_sv)) || |
4624 | (type == OP_OR && !SvTRUE(((SVOP*)cstop)->op_sv)) || | |
4625 | (type == OP_DOR && !SvOK(((SVOP*)cstop)->op_sv))) { | |
5f66b61c | 4626 | *firstp = NULL; |
d6fee5c7 DM |
4627 | if (other->op_type == OP_CONST) |
4628 | other->op_private |= OPpCONST_SHORTCIRCUIT; | |
eb8433b7 NC |
4629 | if (PL_madskills) { |
4630 | OP *newop = newUNOP(OP_NULL, 0, other); | |
4631 | op_getmad(first, newop, '1'); | |
4632 | newop->op_targ = type; /* set "was" field */ | |
4633 | return newop; | |
4634 | } | |
4635 | op_free(first); | |
dd3e51dc VP |
4636 | if (other->op_type == OP_LEAVE) |
4637 | other = newUNOP(OP_NULL, OPf_SPECIAL, other); | |
79072805 LW |
4638 | return other; |
4639 | } | |
4640 | else { | |
7921d0f2 | 4641 | /* check for C<my $x if 0>, or C<my($x,$y) if 0> */ |
6867be6d | 4642 | const OP *o2 = other; |
7921d0f2 DM |
4643 | if ( ! (o2->op_type == OP_LIST |
4644 | && (( o2 = cUNOPx(o2)->op_first)) | |
4645 | && o2->op_type == OP_PUSHMARK | |
4646 | && (( o2 = o2->op_sibling)) ) | |
4647 | ) | |
4648 | o2 = other; | |
4649 | if ((o2->op_type == OP_PADSV || o2->op_type == OP_PADAV | |
4650 | || o2->op_type == OP_PADHV) | |
4651 | && o2->op_private & OPpLVAL_INTRO | |
a2a5de95 | 4652 | && !(o2->op_private & OPpPAD_STATE)) |
7921d0f2 | 4653 | { |
d1d15184 NC |
4654 | Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED), |
4655 | "Deprecated use of my() in false conditional"); | |
7921d0f2 DM |
4656 | } |
4657 | ||
5f66b61c | 4658 | *otherp = NULL; |
d6fee5c7 DM |
4659 | if (first->op_type == OP_CONST) |
4660 | first->op_private |= OPpCONST_SHORTCIRCUIT; | |
eb8433b7 NC |
4661 | if (PL_madskills) { |
4662 | first = newUNOP(OP_NULL, 0, first); | |
4663 | op_getmad(other, first, '2'); | |
4664 | first->op_targ = type; /* set "was" field */ | |
4665 | } | |
4666 | else | |
4667 | op_free(other); | |
79072805 LW |
4668 | return first; |
4669 | } | |
4670 | } | |
041457d9 DM |
4671 | else if ((first->op_flags & OPf_KIDS) && type != OP_DOR |
4672 | && ckWARN(WARN_MISC)) /* [#24076] Don't warn for <FH> err FOO. */ | |
59e10468 | 4673 | { |
b22e6366 AL |
4674 | const OP * const k1 = ((UNOP*)first)->op_first; |
4675 | const OP * const k2 = k1->op_sibling; | |
a6006777 | 4676 | OPCODE warnop = 0; |
4677 | switch (first->op_type) | |
4678 | { | |
4679 | case OP_NULL: | |
4680 | if (k2 && k2->op_type == OP_READLINE | |
4681 | && (k2->op_flags & OPf_STACKED) | |
1c846c1f | 4682 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
72b16652 | 4683 | { |
a6006777 | 4684 | warnop = k2->op_type; |
72b16652 | 4685 | } |
a6006777 | 4686 | break; |
4687 | ||
4688 | case OP_SASSIGN: | |
68dc0745 | 4689 | if (k1->op_type == OP_READDIR |
4690 | || k1->op_type == OP_GLOB | |
72b16652 | 4691 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) |
68dc0745 | 4692 | || k1->op_type == OP_EACH) |
72b16652 GS |
4693 | { |
4694 | warnop = ((k1->op_type == OP_NULL) | |
eb160463 | 4695 | ? (OPCODE)k1->op_targ : k1->op_type); |
72b16652 | 4696 | } |
a6006777 | 4697 | break; |
4698 | } | |
8ebc5c01 | 4699 | if (warnop) { |
6867be6d | 4700 | const line_t oldline = CopLINE(PL_curcop); |
53a7735b | 4701 | CopLINE_set(PL_curcop, PL_parser->copline); |
9014280d | 4702 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
599cee73 | 4703 | "Value of %s%s can be \"0\"; test with defined()", |
22c35a8c | 4704 | PL_op_desc[warnop], |
68dc0745 | 4705 | ((warnop == OP_READLINE || warnop == OP_GLOB) |
4706 | ? " construct" : "() operator")); | |
57843af0 | 4707 | CopLINE_set(PL_curcop, oldline); |
8ebc5c01 | 4708 | } |
a6006777 | 4709 | } |
79072805 LW |
4710 | |
4711 | if (!other) | |
4712 | return first; | |
4713 | ||
c963b151 | 4714 | if (type == OP_ANDASSIGN || type == OP_ORASSIGN || type == OP_DORASSIGN) |
a0d0e21e LW |
4715 | other->op_private |= OPpASSIGN_BACKWARDS; /* other is an OP_SASSIGN */ |
4716 | ||
b7dc083c | 4717 | NewOp(1101, logop, 1, LOGOP); |
79072805 | 4718 | |
eb160463 | 4719 | logop->op_type = (OPCODE)type; |
22c35a8c | 4720 | logop->op_ppaddr = PL_ppaddr[type]; |
79072805 | 4721 | logop->op_first = first; |
585ec06d | 4722 | logop->op_flags = (U8)(flags | OPf_KIDS); |
79072805 | 4723 | logop->op_other = LINKLIST(other); |
eb160463 | 4724 | logop->op_private = (U8)(1 | (flags >> 8)); |
79072805 LW |
4725 | |
4726 | /* establish postfix order */ | |
4727 | logop->op_next = LINKLIST(first); | |
4728 | first->op_next = (OP*)logop; | |
4729 | first->op_sibling = other; | |
4730 | ||
463d09e6 RGS |
4731 | CHECKOP(type,logop); |
4732 | ||
edbe35ea | 4733 | o = newUNOP(prepend_not ? OP_NOT : OP_NULL, 0, (OP*)logop); |
11343788 | 4734 | other->op_next = o; |
79072805 | 4735 | |
11343788 | 4736 | return o; |
79072805 LW |
4737 | } |
4738 | ||
4739 | OP * | |
864dbfa3 | 4740 | Perl_newCONDOP(pTHX_ I32 flags, OP *first, OP *trueop, OP *falseop) |
79072805 | 4741 | { |
27da23d5 | 4742 | dVAR; |
1a67a97c SM |
4743 | LOGOP *logop; |
4744 | OP *start; | |
11343788 | 4745 | OP *o; |
71c4dbc3 | 4746 | OP *cstop; |
79072805 | 4747 | |
7918f24d NC |
4748 | PERL_ARGS_ASSERT_NEWCONDOP; |
4749 | ||
b1cb66bf | 4750 | if (!falseop) |
4751 | return newLOGOP(OP_AND, 0, first, trueop); | |
4752 | if (!trueop) | |
4753 | return newLOGOP(OP_OR, 0, first, falseop); | |
79072805 | 4754 | |
8990e307 | 4755 | scalarboolean(first); |
71c4dbc3 | 4756 | if ((cstop = search_const(first))) { |
5b6782b2 | 4757 | /* Left or right arm of the conditional? */ |
71c4dbc3 | 4758 | const bool left = SvTRUE(((SVOP*)cstop)->op_sv); |
5b6782b2 NC |
4759 | OP *live = left ? trueop : falseop; |
4760 | OP *const dead = left ? falseop : trueop; | |
71c4dbc3 VP |
4761 | if (cstop->op_private & OPpCONST_BARE && |
4762 | cstop->op_private & OPpCONST_STRICT) { | |
4763 | no_bareword_allowed(cstop); | |
b22e6366 | 4764 | } |
5b6782b2 NC |
4765 | if (PL_madskills) { |
4766 | /* This is all dead code when PERL_MAD is not defined. */ | |
4767 | live = newUNOP(OP_NULL, 0, live); | |
4768 | op_getmad(first, live, 'C'); | |
4769 | op_getmad(dead, live, left ? 'e' : 't'); | |
4770 | } else { | |
4771 | op_free(first); | |
4772 | op_free(dead); | |
79072805 | 4773 | } |
ef9da979 FC |
4774 | if (live->op_type == OP_LEAVE) |
4775 | live = newUNOP(OP_NULL, OPf_SPECIAL, live); | |
5b6782b2 | 4776 | return live; |
79072805 | 4777 | } |
1a67a97c SM |
4778 | NewOp(1101, logop, 1, LOGOP); |
4779 | logop->op_type = OP_COND_EXPR; | |
4780 | logop->op_ppaddr = PL_ppaddr[OP_COND_EXPR]; | |
4781 | logop->op_first = first; | |
585ec06d | 4782 | logop->op_flags = (U8)(flags | OPf_KIDS); |
eb160463 | 4783 | logop->op_private = (U8)(1 | (flags >> 8)); |
1a67a97c SM |
4784 | logop->op_other = LINKLIST(trueop); |
4785 | logop->op_next = LINKLIST(falseop); | |
79072805 | 4786 | |
463d09e6 RGS |
4787 | CHECKOP(OP_COND_EXPR, /* that's logop->op_type */ |
4788 | logop); | |
79072805 LW |
4789 | |
4790 | /* establish postfix order */ | |
1a67a97c SM |
4791 | start = LINKLIST(first); |
4792 | first->op_next = (OP*)logop; | |
79072805 | 4793 | |
b1cb66bf | 4794 | first->op_sibling = trueop; |
4795 | trueop->op_sibling = falseop; | |
1a67a97c | 4796 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
79072805 | 4797 | |
1a67a97c | 4798 | trueop->op_next = falseop->op_next = o; |
79072805 | 4799 | |
1a67a97c | 4800 | o->op_next = start; |
11343788 | 4801 | return o; |
79072805 LW |
4802 | } |
4803 | ||
4804 | OP * | |
864dbfa3 | 4805 | Perl_newRANGE(pTHX_ I32 flags, OP *left, OP *right) |
79072805 | 4806 | { |
27da23d5 | 4807 | dVAR; |
1a67a97c | 4808 | LOGOP *range; |
79072805 LW |
4809 | OP *flip; |
4810 | OP *flop; | |
1a67a97c | 4811 | OP *leftstart; |
11343788 | 4812 | OP *o; |
79072805 | 4813 | |
7918f24d NC |
4814 | PERL_ARGS_ASSERT_NEWRANGE; |
4815 | ||
1a67a97c | 4816 | NewOp(1101, range, 1, LOGOP); |
79072805 | 4817 | |
1a67a97c SM |
4818 | range->op_type = OP_RANGE; |
4819 | range->op_ppaddr = PL_ppaddr[OP_RANGE]; | |
4820 | range->op_first = left; | |
4821 | range->op_flags = OPf_KIDS; | |
4822 | leftstart = LINKLIST(left); | |
4823 | range->op_other = LINKLIST(right); | |
eb160463 | 4824 | range->op_private = (U8)(1 | (flags >> 8)); |
79072805 LW |
4825 | |
4826 | left->op_sibling = right; | |
4827 | ||
1a67a97c SM |
4828 | range->op_next = (OP*)range; |
4829 | flip = newUNOP(OP_FLIP, flags, (OP*)range); | |
79072805 | 4830 | flop = newUNOP(OP_FLOP, 0, flip); |
11343788 | 4831 | o = newUNOP(OP_NULL, 0, flop); |
79072805 | 4832 | linklist(flop); |
1a67a97c | 4833 | range->op_next = leftstart; |
79072805 LW |
4834 | |
4835 | left->op_next = flip; | |
4836 | right->op_next = flop; | |
4837 | ||
1a67a97c SM |
4838 | range->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
4839 | sv_upgrade(PAD_SV(range->op_targ), SVt_PVNV); | |
ed6116ce | 4840 | flip->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 LW |
4841 | sv_upgrade(PAD_SV(flip->op_targ), SVt_PVNV); |
4842 | ||
4843 | flip->op_private = left->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
4844 | flop->op_private = right->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
4845 | ||
11343788 | 4846 | flip->op_next = o; |
79072805 | 4847 | if (!flip->op_private || !flop->op_private) |
11343788 | 4848 | linklist(o); /* blow off optimizer unless constant */ |
79072805 | 4849 | |
11343788 | 4850 | return o; |
79072805 LW |
4851 | } |
4852 | ||
4853 | OP * | |
864dbfa3 | 4854 | Perl_newLOOPOP(pTHX_ I32 flags, I32 debuggable, OP *expr, OP *block) |
79072805 | 4855 | { |
97aff369 | 4856 | dVAR; |
463ee0b2 | 4857 | OP* listop; |
11343788 | 4858 | OP* o; |
73d840c0 | 4859 | const bool once = block && block->op_flags & OPf_SPECIAL && |
a0d0e21e | 4860 | (block->op_type == OP_ENTERSUB || block->op_type == OP_NULL); |
46c461b5 AL |
4861 | |
4862 | PERL_UNUSED_ARG(debuggable); | |
93a17b20 | 4863 | |
463ee0b2 LW |
4864 | if (expr) { |
4865 | if (once && expr->op_type == OP_CONST && !SvTRUE(((SVOP*)expr)->op_sv)) | |
4866 | return block; /* do {} while 0 does once */ | |
114c60ec BG |
4867 | if (expr->op_type == OP_READLINE |
4868 | || expr->op_type == OP_READDIR | |
4869 | || expr->op_type == OP_GLOB | |
fb73857a | 4870 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB)) { |
774d564b | 4871 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 4872 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 | 4873 | } else if (expr->op_flags & OPf_KIDS) { |
46c461b5 AL |
4874 | const OP * const k1 = ((UNOP*)expr)->op_first; |
4875 | const OP * const k2 = k1 ? k1->op_sibling : NULL; | |
55d729e4 | 4876 | switch (expr->op_type) { |
1c846c1f | 4877 | case OP_NULL: |
114c60ec | 4878 | if (k2 && (k2->op_type == OP_READLINE || k2->op_type == OP_READDIR) |
55d729e4 | 4879 | && (k2->op_flags & OPf_STACKED) |
1c846c1f | 4880 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
55d729e4 | 4881 | expr = newUNOP(OP_DEFINED, 0, expr); |
1c846c1f | 4882 | break; |
55d729e4 GS |
4883 | |
4884 | case OP_SASSIGN: | |
06dc7ac6 | 4885 | if (k1 && (k1->op_type == OP_READDIR |
55d729e4 | 4886 | || k1->op_type == OP_GLOB |
6531c3e6 | 4887 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) |
06dc7ac6 | 4888 | || k1->op_type == OP_EACH)) |
55d729e4 GS |
4889 | expr = newUNOP(OP_DEFINED, 0, expr); |
4890 | break; | |
4891 | } | |
774d564b | 4892 | } |
463ee0b2 | 4893 | } |
93a17b20 | 4894 | |
e1548254 RGS |
4895 | /* if block is null, the next append_elem() would put UNSTACK, a scalar |
4896 | * op, in listop. This is wrong. [perl #27024] */ | |
4897 | if (!block) | |
4898 | block = newOP(OP_NULL, 0); | |
8990e307 | 4899 | listop = append_elem(OP_LINESEQ, block, newOP(OP_UNSTACK, 0)); |
883ffac3 | 4900 | o = new_logop(OP_AND, 0, &expr, &listop); |
463ee0b2 | 4901 | |
883ffac3 CS |
4902 | if (listop) |
4903 | ((LISTOP*)listop)->op_last->op_next = LINKLIST(o); | |
79072805 | 4904 | |
11343788 MB |
4905 | if (once && o != listop) |
4906 | o->op_next = ((LOGOP*)cUNOPo->op_first)->op_other; | |
79072805 | 4907 | |
11343788 MB |
4908 | if (o == listop) |
4909 | o = newUNOP(OP_NULL, 0, o); /* or do {} while 1 loses outer block */ | |
748a9306 | 4910 | |
11343788 MB |
4911 | o->op_flags |= flags; |
4912 | o = scope(o); | |
4913 | o->op_flags |= OPf_SPECIAL; /* suppress POPBLOCK curpm restoration*/ | |
4914 | return o; | |
79072805 LW |
4915 | } |
4916 | ||
4917 | OP * | |
a034e688 DM |
4918 | Perl_newWHILEOP(pTHX_ I32 flags, I32 debuggable, LOOP *loop, I32 |
4919 | whileline, OP *expr, OP *block, OP *cont, I32 has_my) | |
79072805 | 4920 | { |
27da23d5 | 4921 | dVAR; |
79072805 | 4922 | OP *redo; |
c445ea15 | 4923 | OP *next = NULL; |
79072805 | 4924 | OP *listop; |
11343788 | 4925 | OP *o; |
1ba6ee2b | 4926 | U8 loopflags = 0; |
46c461b5 AL |
4927 | |
4928 | PERL_UNUSED_ARG(debuggable); | |
79072805 | 4929 | |
2d03de9c | 4930 | if (expr) { |
114c60ec BG |
4931 | if (expr->op_type == OP_READLINE |
4932 | || expr->op_type == OP_READDIR | |
4933 | || expr->op_type == OP_GLOB | |
2d03de9c AL |
4934 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB)) { |
4935 | expr = newUNOP(OP_DEFINED, 0, | |
4936 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); | |
4937 | } else if (expr->op_flags & OPf_KIDS) { | |
4938 | const OP * const k1 = ((UNOP*)expr)->op_first; | |
4939 | const OP * const k2 = (k1) ? k1->op_sibling : NULL; | |
4940 | switch (expr->op_type) { | |
4941 | case OP_NULL: | |
114c60ec | 4942 | if (k2 && (k2->op_type == OP_READLINE || k2->op_type == OP_READDIR) |
2d03de9c AL |
4943 | && (k2->op_flags & OPf_STACKED) |
4944 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) | |
4945 | expr = newUNOP(OP_DEFINED, 0, expr); | |
4946 | break; | |
55d729e4 | 4947 | |
2d03de9c | 4948 | case OP_SASSIGN: |
72c8de1a | 4949 | if (k1 && (k1->op_type == OP_READDIR |
2d03de9c AL |
4950 | || k1->op_type == OP_GLOB |
4951 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) | |
72c8de1a | 4952 | || k1->op_type == OP_EACH)) |
2d03de9c AL |
4953 | expr = newUNOP(OP_DEFINED, 0, expr); |
4954 | break; | |
4955 | } | |
55d729e4 | 4956 | } |
748a9306 | 4957 | } |
79072805 LW |
4958 | |
4959 | if (!block) | |
4960 | block = newOP(OP_NULL, 0); | |
a034e688 | 4961 | else if (cont || has_my) { |
87246558 GS |
4962 | block = scope(block); |
4963 | } | |
79072805 | 4964 | |
1ba6ee2b | 4965 | if (cont) { |
79072805 | 4966 | next = LINKLIST(cont); |
1ba6ee2b | 4967 | } |
fb73857a | 4968 | if (expr) { |
551405c4 | 4969 | OP * const unstack = newOP(OP_UNSTACK, 0); |
85538317 GS |
4970 | if (!next) |
4971 | next = unstack; | |
4972 | cont = append_elem(OP_LINESEQ, cont, unstack); | |
fb73857a | 4973 | } |
79072805 | 4974 | |
ce3e5c45 | 4975 | assert(block); |
463ee0b2 | 4976 | listop = append_list(OP_LINESEQ, (LISTOP*)block, (LISTOP*)cont); |
ce3e5c45 | 4977 | assert(listop); |
79072805 LW |
4978 | redo = LINKLIST(listop); |
4979 | ||
4980 | if (expr) { | |
53a7735b | 4981 | PL_parser->copline = (line_t)whileline; |
883ffac3 CS |
4982 | scalar(listop); |
4983 | o = new_logop(OP_AND, 0, &expr, &listop); | |
11343788 | 4984 | if (o == expr && o->op_type == OP_CONST && !SvTRUE(cSVOPo->op_sv)) { |
85e6fe83 | 4985 | op_free(expr); /* oops, it's a while (0) */ |
463ee0b2 | 4986 | op_free((OP*)loop); |
5f66b61c | 4987 | return NULL; /* listop already freed by new_logop */ |
463ee0b2 | 4988 | } |
883ffac3 | 4989 | if (listop) |
497b47a8 | 4990 | ((LISTOP*)listop)->op_last->op_next = |
883ffac3 | 4991 | (o == listop ? redo : LINKLIST(o)); |
79072805 LW |
4992 | } |
4993 | else | |
11343788 | 4994 | o = listop; |
79072805 LW |
4995 | |
4996 | if (!loop) { | |
b7dc083c | 4997 | NewOp(1101,loop,1,LOOP); |
79072805 | 4998 | loop->op_type = OP_ENTERLOOP; |
22c35a8c | 4999 | loop->op_ppaddr = PL_ppaddr[OP_ENTERLOOP]; |
79072805 LW |
5000 | loop->op_private = 0; |
5001 | loop->op_next = (OP*)loop; | |
5002 | } | |
5003 | ||
11343788 | 5004 | o = newBINOP(OP_LEAVELOOP, 0, (OP*)loop, o); |
79072805 LW |
5005 | |
5006 | loop->op_redoop = redo; | |
11343788 | 5007 | loop->op_lastop = o; |
1ba6ee2b | 5008 | o->op_private |= loopflags; |
79072805 LW |
5009 | |
5010 | if (next) | |
5011 | loop->op_nextop = next; | |
5012 | else | |
11343788 | 5013 | loop->op_nextop = o; |
79072805 | 5014 | |
11343788 MB |
5015 | o->op_flags |= flags; |
5016 | o->op_private |= (flags >> 8); | |
5017 | return o; | |
79072805 LW |
5018 | } |
5019 | ||
5020 | OP * | |
66a1b24b | 5021 | Perl_newFOROP(pTHX_ I32 flags, char *label, line_t forline, OP *sv, OP *expr, OP *block, OP *cont) |
79072805 | 5022 | { |
27da23d5 | 5023 | dVAR; |
79072805 | 5024 | LOOP *loop; |
fb73857a | 5025 | OP *wop; |
4bbc6d12 | 5026 | PADOFFSET padoff = 0; |
4633a7c4 | 5027 | I32 iterflags = 0; |
241416b8 | 5028 | I32 iterpflags = 0; |
d4c19fe8 | 5029 | OP *madsv = NULL; |
79072805 | 5030 | |
7918f24d NC |
5031 | PERL_ARGS_ASSERT_NEWFOROP; |
5032 | ||
79072805 | 5033 | if (sv) { |
85e6fe83 | 5034 | if (sv->op_type == OP_RV2SV) { /* symbol table variable */ |
241416b8 | 5035 | iterpflags = sv->op_private & OPpOUR_INTRO; /* for our $x () */ |
748a9306 | 5036 | sv->op_type = OP_RV2GV; |
22c35a8c | 5037 | sv->op_ppaddr = PL_ppaddr[OP_RV2GV]; |
0be9a6bb RH |
5038 | |
5039 | /* The op_type check is needed to prevent a possible segfault | |
5040 | * if the loop variable is undeclared and 'strict vars' is in | |
5041 | * effect. This is illegal but is nonetheless parsed, so we | |
5042 | * may reach this point with an OP_CONST where we're expecting | |
5043 | * an OP_GV. | |
5044 | */ | |
5045 | if (cUNOPx(sv)->op_first->op_type == OP_GV | |
5046 | && cGVOPx_gv(cUNOPx(sv)->op_first) == PL_defgv) | |
0d863452 | 5047 | iterpflags |= OPpITER_DEF; |
79072805 | 5048 | } |
85e6fe83 | 5049 | else if (sv->op_type == OP_PADSV) { /* private variable */ |
241416b8 | 5050 | iterpflags = sv->op_private & OPpLVAL_INTRO; /* for my $x () */ |
85e6fe83 | 5051 | padoff = sv->op_targ; |
eb8433b7 NC |
5052 | if (PL_madskills) |
5053 | madsv = sv; | |
5054 | else { | |
5055 | sv->op_targ = 0; | |
5056 | op_free(sv); | |
5057 | } | |
5f66b61c | 5058 | sv = NULL; |
85e6fe83 | 5059 | } |
79072805 | 5060 | else |
cea2e8a9 | 5061 | Perl_croak(aTHX_ "Can't use %s for loop variable", PL_op_desc[sv->op_type]); |
f8503592 NC |
5062 | if (padoff) { |
5063 | SV *const namesv = PAD_COMPNAME_SV(padoff); | |
5064 | STRLEN len; | |
5065 | const char *const name = SvPV_const(namesv, len); | |
5066 | ||
5067 | if (len == 2 && name[0] == '$' && name[1] == '_') | |
5068 | iterpflags |= OPpITER_DEF; | |
5069 | } | |
79072805 LW |
5070 | } |
5071 | else { | |
f8f98e0a | 5072 | const PADOFFSET offset = Perl_pad_findmy(aTHX_ STR_WITH_LEN("$_"), 0); |
00b1698f | 5073 | if (offset == NOT_IN_PAD || PAD_COMPNAME_FLAGS_isOUR(offset)) { |
aabe9514 RGS |
5074 | sv = newGVOP(OP_GV, 0, PL_defgv); |
5075 | } | |
5076 | else { | |
5077 | padoff = offset; | |
aabe9514 | 5078 | } |
0d863452 | 5079 | iterpflags |= OPpITER_DEF; |
79072805 | 5080 | } |
5f05dabc | 5081 | if (expr->op_type == OP_RV2AV || expr->op_type == OP_PADAV) { |
89ea2908 | 5082 | expr = mod(force_list(scalar(ref(expr, OP_ITER))), OP_GREPSTART); |
4633a7c4 LW |
5083 | iterflags |= OPf_STACKED; |
5084 | } | |
89ea2908 GA |
5085 | else if (expr->op_type == OP_NULL && |
5086 | (expr->op_flags & OPf_KIDS) && | |
5087 | ((BINOP*)expr)->op_first->op_type == OP_FLOP) | |
5088 | { | |
5089 | /* Basically turn for($x..$y) into the same as for($x,$y), but we | |
5090 | * set the STACKED flag to indicate that these values are to be | |
5091 | * treated as min/max values by 'pp_iterinit'. | |
5092 | */ | |
d4c19fe8 | 5093 | const UNOP* const flip = (UNOP*)((UNOP*)((BINOP*)expr)->op_first)->op_first; |
551405c4 | 5094 | LOGOP* const range = (LOGOP*) flip->op_first; |
66a1b24b AL |
5095 | OP* const left = range->op_first; |
5096 | OP* const right = left->op_sibling; | |
5152d7c7 | 5097 | LISTOP* listop; |
89ea2908 GA |
5098 | |
5099 | range->op_flags &= ~OPf_KIDS; | |
5f66b61c | 5100 | range->op_first = NULL; |
89ea2908 | 5101 | |
5152d7c7 | 5102 | listop = (LISTOP*)newLISTOP(OP_LIST, 0, left, right); |
1a67a97c SM |
5103 | listop->op_first->op_next = range->op_next; |
5104 | left->op_next = range->op_other; | |
5152d7c7 GS |
5105 | right->op_next = (OP*)listop; |
5106 | listop->op_next = listop->op_first; | |
89ea2908 | 5107 | |
eb8433b7 NC |
5108 | #ifdef PERL_MAD |
5109 | op_getmad(expr,(OP*)listop,'O'); | |
5110 | #else | |
89ea2908 | 5111 | op_free(expr); |
eb8433b7 | 5112 | #endif |
5152d7c7 | 5113 | expr = (OP*)(listop); |
93c66552 | 5114 | op_null(expr); |
89ea2908 GA |
5115 | iterflags |= OPf_STACKED; |
5116 | } | |
5117 | else { | |
5118 | expr = mod(force_list(expr), OP_GREPSTART); | |
5119 | } | |
5120 | ||
4633a7c4 | 5121 | loop = (LOOP*)list(convert(OP_ENTERITER, iterflags, |
89ea2908 | 5122 | append_elem(OP_LIST, expr, scalar(sv)))); |
85e6fe83 | 5123 | assert(!loop->op_next); |
241416b8 | 5124 | /* for my $x () sets OPpLVAL_INTRO; |
14f338dc | 5125 | * for our $x () sets OPpOUR_INTRO */ |
c5661c80 | 5126 | loop->op_private = (U8)iterpflags; |
b7dc083c | 5127 | #ifdef PL_OP_SLAB_ALLOC |
155aba94 GS |
5128 | { |
5129 | LOOP *tmp; | |
5130 | NewOp(1234,tmp,1,LOOP); | |
bd5f3bc4 | 5131 | Copy(loop,tmp,1,LISTOP); |
bfafaa29 | 5132 | S_op_destroy(aTHX_ (OP*)loop); |
155aba94 GS |
5133 | loop = tmp; |
5134 | } | |
b7dc083c | 5135 | #else |
10edeb5d | 5136 | loop = (LOOP*)PerlMemShared_realloc(loop, sizeof(LOOP)); |
1c846c1f | 5137 | #endif |
85e6fe83 | 5138 | loop->op_targ = padoff; |
a034e688 | 5139 | wop = newWHILEOP(flags, 1, loop, forline, newOP(OP_ITER, 0), block, cont, 0); |
eb8433b7 NC |
5140 | if (madsv) |
5141 | op_getmad(madsv, (OP*)loop, 'v'); | |
53a7735b | 5142 | PL_parser->copline = forline; |
fb73857a | 5143 | return newSTATEOP(0, label, wop); |
79072805 LW |
5144 | } |
5145 | ||
8990e307 | 5146 | OP* |
864dbfa3 | 5147 | Perl_newLOOPEX(pTHX_ I32 type, OP *label) |
8990e307 | 5148 | { |
97aff369 | 5149 | dVAR; |
11343788 | 5150 | OP *o; |
2d8e6c8d | 5151 | |
7918f24d NC |
5152 | PERL_ARGS_ASSERT_NEWLOOPEX; |
5153 | ||
e69777c1 GG |
5154 | assert((PL_opargs[type] & OA_CLASS_MASK) == OA_LOOPEXOP); |
5155 | ||
8990e307 | 5156 | if (type != OP_GOTO || label->op_type == OP_CONST) { |
cdaebead MB |
5157 | /* "last()" means "last" */ |
5158 | if (label->op_type == OP_STUB && (label->op_flags & OPf_PARENS)) | |
5159 | o = newOP(type, OPf_SPECIAL); | |
5160 | else { | |
ea71c68d | 5161 | o = newPVOP(type, 0, savesharedpv(label->op_type == OP_CONST |
4ea561bc | 5162 | ? SvPV_nolen_const(((SVOP*)label)->op_sv) |
666ea192 | 5163 | : "")); |
cdaebead | 5164 | } |
eb8433b7 NC |
5165 | #ifdef PERL_MAD |
5166 | op_getmad(label,o,'L'); | |
5167 | #else | |
8990e307 | 5168 | op_free(label); |
eb8433b7 | 5169 | #endif |
8990e307 LW |
5170 | } |
5171 | else { | |
e3aba57a RGS |
5172 | /* Check whether it's going to be a goto &function */ |
5173 | if (label->op_type == OP_ENTERSUB | |
5174 | && !(label->op_flags & OPf_STACKED)) | |
a0d0e21e | 5175 | label = newUNOP(OP_REFGEN, 0, mod(label, OP_REFGEN)); |
11343788 | 5176 | o = newUNOP(type, OPf_STACKED, label); |
8990e307 | 5177 | } |
3280af22 | 5178 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 5179 | return o; |
8990e307 LW |
5180 | } |
5181 | ||
0d863452 RH |
5182 | /* if the condition is a literal array or hash |
5183 | (or @{ ... } etc), make a reference to it. | |
5184 | */ | |
5185 | STATIC OP * | |
5186 | S_ref_array_or_hash(pTHX_ OP *cond) | |
5187 | { | |
5188 | if (cond | |
5189 | && (cond->op_type == OP_RV2AV | |
5190 | || cond->op_type == OP_PADAV | |
5191 | || cond->op_type == OP_RV2HV | |
5192 | || cond->op_type == OP_PADHV)) | |
5193 | ||
5194 | return newUNOP(OP_REFGEN, | |
5195 | 0, mod(cond, OP_REFGEN)); | |
5196 | ||
5197 | else | |
5198 | return cond; | |
5199 | } | |
5200 | ||
5201 | /* These construct the optree fragments representing given() | |
5202 | and when() blocks. | |
5203 | ||
5204 | entergiven and enterwhen are LOGOPs; the op_other pointer | |
5205 | points up to the associated leave op. We need this so we | |
5206 | can put it in the context and make break/continue work. | |
5207 | (Also, of course, pp_enterwhen will jump straight to | |
5208 | op_other if the match fails.) | |
5209 | */ | |
5210 | ||
4136a0f7 | 5211 | STATIC OP * |
0d863452 RH |
5212 | S_newGIVWHENOP(pTHX_ OP *cond, OP *block, |
5213 | I32 enter_opcode, I32 leave_opcode, | |
5214 | PADOFFSET entertarg) | |
5215 | { | |
97aff369 | 5216 | dVAR; |
0d863452 RH |
5217 | LOGOP *enterop; |
5218 | OP *o; | |
5219 | ||
7918f24d NC |
5220 | PERL_ARGS_ASSERT_NEWGIVWHENOP; |
5221 | ||
0d863452 | 5222 | NewOp(1101, enterop, 1, LOGOP); |
61a59f30 | 5223 | enterop->op_type = (Optype)enter_opcode; |
0d863452 RH |
5224 | enterop->op_ppaddr = PL_ppaddr[enter_opcode]; |
5225 | enterop->op_flags = (U8) OPf_KIDS; | |
5226 | enterop->op_targ = ((entertarg == NOT_IN_PAD) ? 0 : entertarg); | |
5227 | enterop->op_private = 0; | |
5228 | ||
5229 | o = newUNOP(leave_opcode, 0, (OP *) enterop); | |
5230 | ||
5231 | if (cond) { | |
5232 | enterop->op_first = scalar(cond); | |
5233 | cond->op_sibling = block; | |
5234 | ||
5235 | o->op_next = LINKLIST(cond); | |
5236 | cond->op_next = (OP *) enterop; | |
5237 | } | |
5238 | else { | |
5239 | /* This is a default {} block */ | |
5240 | enterop->op_first = block; | |
5241 | enterop->op_flags |= OPf_SPECIAL; | |
5242 | ||
5243 | o->op_next = (OP *) enterop; | |
5244 | } | |
5245 | ||
5246 | CHECKOP(enter_opcode, enterop); /* Currently does nothing, since | |
5247 | entergiven and enterwhen both | |
5248 | use ck_null() */ | |
5249 | ||
5250 | enterop->op_next = LINKLIST(block); | |
5251 | block->op_next = enterop->op_other = o; | |
5252 | ||
5253 | return o; | |
5254 | } | |
5255 | ||
5256 | /* Does this look like a boolean operation? For these purposes | |
5257 | a boolean operation is: | |
5258 | - a subroutine call [*] | |
5259 | - a logical connective | |
5260 | - a comparison operator | |
5261 | - a filetest operator, with the exception of -s -M -A -C | |
5262 | - defined(), exists() or eof() | |
5263 | - /$re/ or $foo =~ /$re/ | |
5264 | ||
5265 | [*] possibly surprising | |
5266 | */ | |
4136a0f7 | 5267 | STATIC bool |
ef519e13 | 5268 | S_looks_like_bool(pTHX_ const OP *o) |
0d863452 | 5269 | { |
97aff369 | 5270 | dVAR; |
7918f24d NC |
5271 | |
5272 | PERL_ARGS_ASSERT_LOOKS_LIKE_BOOL; | |
5273 | ||
0d863452 RH |
5274 | switch(o->op_type) { |
5275 | case OP_OR: | |
f92e1a16 | 5276 | case OP_DOR: |
0d863452 RH |
5277 | return looks_like_bool(cLOGOPo->op_first); |
5278 | ||
5279 | case OP_AND: | |
5280 | return ( | |
5281 | looks_like_bool(cLOGOPo->op_first) | |
5282 | && looks_like_bool(cLOGOPo->op_first->op_sibling)); | |
5283 | ||
1e1d4b91 | 5284 | case OP_NULL: |
08fe1c44 | 5285 | case OP_SCALAR: |
1e1d4b91 JJ |
5286 | return ( |
5287 | o->op_flags & OPf_KIDS | |
5288 | && looks_like_bool(cUNOPo->op_first)); | |
5289 | ||
0d863452 RH |
5290 | case OP_ENTERSUB: |
5291 | ||
5292 | case OP_NOT: case OP_XOR: | |
0d863452 RH |
5293 | |
5294 | case OP_EQ: case OP_NE: case OP_LT: | |
5295 | case OP_GT: case OP_LE: case OP_GE: | |
5296 | ||
5297 | case OP_I_EQ: case OP_I_NE: case OP_I_LT: | |
5298 | case OP_I_GT: case OP_I_LE: case OP_I_GE: | |
5299 | ||
5300 | case OP_SEQ: case OP_SNE: case OP_SLT: | |
5301 | case OP_SGT: case OP_SLE: case OP_SGE: | |
5302 | ||
5303 | case OP_SMARTMATCH: | |
5304 | ||
5305 | case OP_FTRREAD: case OP_FTRWRITE: case OP_FTREXEC: | |
5306 | case OP_FTEREAD: case OP_FTEWRITE: case OP_FTEEXEC: | |
5307 | case OP_FTIS: case OP_FTEOWNED: case OP_FTROWNED: | |
5308 | case OP_FTZERO: case OP_FTSOCK: case OP_FTCHR: | |
5309 | case OP_FTBLK: case OP_FTFILE: case OP_FTDIR: | |
5310 | case OP_FTPIPE: case OP_FTLINK: case OP_FTSUID: | |
5311 | case OP_FTSGID: case OP_FTSVTX: case OP_FTTTY: | |
5312 | case OP_FTTEXT: case OP_FTBINARY: | |
5313 | ||
5314 | case OP_DEFINED: case OP_EXISTS: | |
5315 | case OP_MATCH: case OP_EOF: | |
5316 | ||
f118ea0d RGS |
5317 | case OP_FLOP: |
5318 | ||
0d863452 RH |
5319 | return TRUE; |
5320 | ||
5321 | case OP_CONST: | |
5322 | /* Detect comparisons that have been optimized away */ | |
5323 | if (cSVOPo->op_sv == &PL_sv_yes | |
5324 | || cSVOPo->op_sv == &PL_sv_no) | |
5325 | ||
5326 | return TRUE; | |
6e03d743 RGS |
5327 | else |
5328 | return FALSE; | |
6e03d743 | 5329 | |
0d863452 RH |
5330 | /* FALL THROUGH */ |
5331 | default: | |
5332 | return FALSE; | |
5333 | } | |
5334 | } | |
5335 | ||
5336 | OP * | |
5337 | Perl_newGIVENOP(pTHX_ OP *cond, OP *block, PADOFFSET defsv_off) | |
5338 | { | |
97aff369 | 5339 | dVAR; |
7918f24d | 5340 | PERL_ARGS_ASSERT_NEWGIVENOP; |
0d863452 RH |
5341 | return newGIVWHENOP( |
5342 | ref_array_or_hash(cond), | |
5343 | block, | |
5344 | OP_ENTERGIVEN, OP_LEAVEGIVEN, | |
5345 | defsv_off); | |
5346 | } | |
5347 | ||
5348 | /* If cond is null, this is a default {} block */ | |
5349 | OP * | |
5350 | Perl_newWHENOP(pTHX_ OP *cond, OP *block) | |
5351 | { | |
ef519e13 | 5352 | const bool cond_llb = (!cond || looks_like_bool(cond)); |
0d863452 RH |
5353 | OP *cond_op; |
5354 | ||
7918f24d NC |
5355 | PERL_ARGS_ASSERT_NEWWHENOP; |
5356 | ||
0d863452 RH |
5357 | if (cond_llb) |
5358 | cond_op = cond; | |
5359 | else { | |
5360 | cond_op = newBINOP(OP_SMARTMATCH, OPf_SPECIAL, | |
5361 | newDEFSVOP(), | |
5362 | scalar(ref_array_or_hash(cond))); | |
5363 | } | |
5364 | ||
5365 | return newGIVWHENOP( | |
5366 | cond_op, | |
5367 | append_elem(block->op_type, block, newOP(OP_BREAK, OPf_SPECIAL)), | |
5368 | OP_ENTERWHEN, OP_LEAVEWHEN, 0); | |
5369 | } | |
5370 | ||
7dafbf52 DM |
5371 | /* |
5372 | =for apidoc cv_undef | |
5373 | ||
5374 | Clear out all the active components of a CV. This can happen either | |
5375 | by an explicit C<undef &foo>, or by the reference count going to zero. | |
5376 | In the former case, we keep the CvOUTSIDE pointer, so that any anonymous | |
5377 | children can still follow the full lexical scope chain. | |
5378 | ||
5379 | =cut | |
5380 | */ | |
5381 | ||
79072805 | 5382 | void |
864dbfa3 | 5383 | Perl_cv_undef(pTHX_ CV *cv) |
79072805 | 5384 | { |
27da23d5 | 5385 | dVAR; |
503de470 | 5386 | |
7918f24d NC |
5387 | PERL_ARGS_ASSERT_CV_UNDEF; |
5388 | ||
503de470 DM |
5389 | DEBUG_X(PerlIO_printf(Perl_debug_log, |
5390 | "CV undef: cv=0x%"UVxf" comppad=0x%"UVxf"\n", | |
5391 | PTR2UV(cv), PTR2UV(PL_comppad)) | |
5392 | ); | |
5393 | ||
a636914a | 5394 | #ifdef USE_ITHREADS |
aed2304a | 5395 | if (CvFILE(cv) && !CvISXSUB(cv)) { |
35f1c1c7 | 5396 | /* for XSUBs CvFILE point directly to static memory; __FILE__ */ |
a636914a | 5397 | Safefree(CvFILE(cv)); |
a636914a | 5398 | } |
b3123a61 | 5399 | CvFILE(cv) = NULL; |
a636914a RH |
5400 | #endif |
5401 | ||
aed2304a | 5402 | if (!CvISXSUB(cv) && CvROOT(cv)) { |
bb172083 | 5403 | if (SvTYPE(cv) == SVt_PVCV && CvDEPTH(cv)) |
cea2e8a9 | 5404 | Perl_croak(aTHX_ "Can't undef active subroutine"); |
8990e307 | 5405 | ENTER; |
a0d0e21e | 5406 | |
f3548bdc | 5407 | PAD_SAVE_SETNULLPAD(); |
a0d0e21e | 5408 | |
282f25c9 | 5409 | op_free(CvROOT(cv)); |
5f66b61c AL |
5410 | CvROOT(cv) = NULL; |
5411 | CvSTART(cv) = NULL; | |
8990e307 | 5412 | LEAVE; |
79072805 | 5413 | } |
ad64d0ec | 5414 | SvPOK_off(MUTABLE_SV(cv)); /* forget prototype */ |
a0714e2c | 5415 | CvGV(cv) = NULL; |
a3985cdc DM |
5416 | |
5417 | pad_undef(cv); | |
5418 | ||
7dafbf52 DM |
5419 | /* remove CvOUTSIDE unless this is an undef rather than a free */ |
5420 | if (!SvREFCNT(cv) && CvOUTSIDE(cv)) { | |
5421 | if (!CvWEAKOUTSIDE(cv)) | |
5422 | SvREFCNT_dec(CvOUTSIDE(cv)); | |
601f1833 | 5423 | CvOUTSIDE(cv) = NULL; |
7dafbf52 | 5424 | } |
beab0874 | 5425 | if (CvCONST(cv)) { |
ad64d0ec | 5426 | SvREFCNT_dec(MUTABLE_SV(CvXSUBANY(cv).any_ptr)); |
beab0874 JT |
5427 | CvCONST_off(cv); |
5428 | } | |
d04ba589 | 5429 | if (CvISXSUB(cv) && CvXSUB(cv)) { |
96a5add6 | 5430 | CvXSUB(cv) = NULL; |
50762d59 | 5431 | } |
7dafbf52 DM |
5432 | /* delete all flags except WEAKOUTSIDE */ |
5433 | CvFLAGS(cv) &= CVf_WEAKOUTSIDE; | |
79072805 LW |
5434 | } |
5435 | ||
3fe9a6f1 | 5436 | void |
cbf82dd0 NC |
5437 | Perl_cv_ckproto_len(pTHX_ const CV *cv, const GV *gv, const char *p, |
5438 | const STRLEN len) | |
5439 | { | |
7918f24d NC |
5440 | PERL_ARGS_ASSERT_CV_CKPROTO_LEN; |
5441 | ||
cbf82dd0 NC |
5442 | /* Can't just use a strcmp on the prototype, as CONSTSUBs "cheat" by |
5443 | relying on SvCUR, and doubling up the buffer to hold CvFILE(). */ | |
5444 | if (((!p != !SvPOK(cv)) /* One has prototype, one has not. */ | |
5445 | || (p && (len != SvCUR(cv) /* Not the same length. */ | |
5446 | || memNE(p, SvPVX_const(cv), len)))) | |
5447 | && ckWARN_d(WARN_PROTOTYPE)) { | |
2d03de9c | 5448 | SV* const msg = sv_newmortal(); |
a0714e2c | 5449 | SV* name = NULL; |
3fe9a6f1 | 5450 | |
5451 | if (gv) | |
bd61b366 | 5452 | gv_efullname3(name = sv_newmortal(), gv, NULL); |
6502358f | 5453 | sv_setpvs(msg, "Prototype mismatch:"); |
46fc3d4c | 5454 | if (name) |
be2597df | 5455 | Perl_sv_catpvf(aTHX_ msg, " sub %"SVf, SVfARG(name)); |
3fe9a6f1 | 5456 | if (SvPOK(cv)) |
be2597df | 5457 | Perl_sv_catpvf(aTHX_ msg, " (%"SVf")", SVfARG(cv)); |
ebe643b9 | 5458 | else |
396482e1 GA |
5459 | sv_catpvs(msg, ": none"); |
5460 | sv_catpvs(msg, " vs "); | |
46fc3d4c | 5461 | if (p) |
cbf82dd0 | 5462 | Perl_sv_catpvf(aTHX_ msg, "(%.*s)", (int) len, p); |
46fc3d4c | 5463 | else |
396482e1 | 5464 | sv_catpvs(msg, "none"); |
be2597df | 5465 | Perl_warner(aTHX_ packWARN(WARN_PROTOTYPE), "%"SVf, SVfARG(msg)); |
3fe9a6f1 | 5466 | } |
5467 | } | |
5468 | ||
35f1c1c7 SB |
5469 | static void const_sv_xsub(pTHX_ CV* cv); |
5470 | ||
beab0874 | 5471 | /* |
ccfc67b7 JH |
5472 | |
5473 | =head1 Optree Manipulation Functions | |
5474 | ||
beab0874 JT |
5475 | =for apidoc cv_const_sv |
5476 | ||
5477 | If C<cv> is a constant sub eligible for inlining. returns the constant | |
5478 | value returned by the sub. Otherwise, returns NULL. | |
5479 | ||
5480 | Constant subs can be created with C<newCONSTSUB> or as described in | |
5481 | L<perlsub/"Constant Functions">. | |
5482 | ||
5483 | =cut | |
5484 | */ | |
760ac839 | 5485 | SV * |
d45f5b30 | 5486 | Perl_cv_const_sv(pTHX_ const CV *const cv) |
760ac839 | 5487 | { |
96a5add6 | 5488 | PERL_UNUSED_CONTEXT; |
5069cc75 NC |
5489 | if (!cv) |
5490 | return NULL; | |
5491 | if (!(SvTYPE(cv) == SVt_PVCV || SvTYPE(cv) == SVt_PVFM)) | |
5492 | return NULL; | |
ad64d0ec | 5493 | return CvCONST(cv) ? MUTABLE_SV(CvXSUBANY(cv).any_ptr) : NULL; |
fe5e78ed | 5494 | } |
760ac839 | 5495 | |
b5c19bd7 DM |
5496 | /* op_const_sv: examine an optree to determine whether it's in-lineable. |
5497 | * Can be called in 3 ways: | |
5498 | * | |
5499 | * !cv | |
5500 | * look for a single OP_CONST with attached value: return the value | |
5501 | * | |
5502 | * cv && CvCLONE(cv) && !CvCONST(cv) | |
5503 | * | |
5504 | * examine the clone prototype, and if contains only a single | |
5505 | * OP_CONST referencing a pad const, or a single PADSV referencing | |
5506 | * an outer lexical, return a non-zero value to indicate the CV is | |
5507 | * a candidate for "constizing" at clone time | |
5508 | * | |
5509 | * cv && CvCONST(cv) | |
5510 | * | |
5511 | * We have just cloned an anon prototype that was marked as a const | |
5512 | * candidiate. Try to grab the current value, and in the case of | |
5513 | * PADSV, ignore it if it has multiple references. Return the value. | |
5514 | */ | |
5515 | ||
fe5e78ed | 5516 | SV * |
6867be6d | 5517 | Perl_op_const_sv(pTHX_ const OP *o, CV *cv) |
fe5e78ed | 5518 | { |
97aff369 | 5519 | dVAR; |
a0714e2c | 5520 | SV *sv = NULL; |
fe5e78ed | 5521 | |
c631f32b GG |
5522 | if (PL_madskills) |
5523 | return NULL; | |
5524 | ||
0f79a09d | 5525 | if (!o) |
a0714e2c | 5526 | return NULL; |
1c846c1f NIS |
5527 | |
5528 | if (o->op_type == OP_LINESEQ && cLISTOPo->op_first) | |
fe5e78ed GS |
5529 | o = cLISTOPo->op_first->op_sibling; |
5530 | ||
5531 | for (; o; o = o->op_next) { | |
890ce7af | 5532 | const OPCODE type = o->op_type; |
fe5e78ed | 5533 | |
1c846c1f | 5534 | if (sv && o->op_next == o) |
fe5e78ed | 5535 | return sv; |
e576b457 JT |
5536 | if (o->op_next != o) { |
5537 | if (type == OP_NEXTSTATE || type == OP_NULL || type == OP_PUSHMARK) | |
5538 | continue; | |
5539 | if (type == OP_DBSTATE) | |
5540 | continue; | |
5541 | } | |
54310121 | 5542 | if (type == OP_LEAVESUB || type == OP_RETURN) |
5543 | break; | |
5544 | if (sv) | |
a0714e2c | 5545 | return NULL; |
7766f137 | 5546 | if (type == OP_CONST && cSVOPo->op_sv) |
5dc0d613 | 5547 | sv = cSVOPo->op_sv; |
b5c19bd7 | 5548 | else if (cv && type == OP_CONST) { |
dd2155a4 | 5549 | sv = PAD_BASE_SV(CvPADLIST(cv), o->op_targ); |
beab0874 | 5550 | if (!sv) |
a0714e2c | 5551 | return NULL; |
b5c19bd7 DM |
5552 | } |
5553 | else if (cv && type == OP_PADSV) { | |
5554 | if (CvCONST(cv)) { /* newly cloned anon */ | |
5555 | sv = PAD_BASE_SV(CvPADLIST(cv), o->op_targ); | |
5556 | /* the candidate should have 1 ref from this pad and 1 ref | |
5557 | * from the parent */ | |
5558 | if (!sv || SvREFCNT(sv) != 2) | |
a0714e2c | 5559 | return NULL; |
beab0874 | 5560 | sv = newSVsv(sv); |
b5c19bd7 DM |
5561 | SvREADONLY_on(sv); |
5562 | return sv; | |
5563 | } | |
5564 | else { | |
5565 | if (PAD_COMPNAME_FLAGS(o->op_targ) & SVf_FAKE) | |
5566 | sv = &PL_sv_undef; /* an arbitrary non-null value */ | |
beab0874 | 5567 | } |
760ac839 | 5568 | } |
b5c19bd7 | 5569 | else { |
a0714e2c | 5570 | return NULL; |
b5c19bd7 | 5571 | } |
760ac839 LW |
5572 | } |
5573 | return sv; | |
5574 | } | |
5575 | ||
eb8433b7 NC |
5576 | #ifdef PERL_MAD |
5577 | OP * | |
5578 | #else | |
09bef843 | 5579 | void |
eb8433b7 | 5580 | #endif |
09bef843 SB |
5581 | Perl_newMYSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, OP *block) |
5582 | { | |
99129197 NC |
5583 | #if 0 |
5584 | /* This would be the return value, but the return cannot be reached. */ | |
eb8433b7 NC |
5585 | OP* pegop = newOP(OP_NULL, 0); |
5586 | #endif | |
5587 | ||
46c461b5 AL |
5588 | PERL_UNUSED_ARG(floor); |
5589 | ||
09bef843 SB |
5590 | if (o) |
5591 | SAVEFREEOP(o); | |
5592 | if (proto) | |
5593 | SAVEFREEOP(proto); | |
5594 | if (attrs) | |
5595 | SAVEFREEOP(attrs); | |
5596 | if (block) | |
5597 | SAVEFREEOP(block); | |
5598 | Perl_croak(aTHX_ "\"my sub\" not yet implemented"); | |
eb8433b7 | 5599 | #ifdef PERL_MAD |
99129197 | 5600 | NORETURN_FUNCTION_END; |
eb8433b7 | 5601 | #endif |
09bef843 SB |
5602 | } |
5603 | ||
748a9306 | 5604 | CV * |
864dbfa3 | 5605 | Perl_newSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *block) |
79072805 | 5606 | { |
5f66b61c | 5607 | return Perl_newATTRSUB(aTHX_ floor, o, proto, NULL, block); |
09bef843 SB |
5608 | } |
5609 | ||
5610 | CV * | |
5611 | Perl_newATTRSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, OP *block) | |
5612 | { | |
27da23d5 | 5613 | dVAR; |
83ee9e09 | 5614 | GV *gv; |
5c144d81 | 5615 | const char *ps; |
ea6e9374 | 5616 | STRLEN ps_len; |
c445ea15 | 5617 | register CV *cv = NULL; |
beab0874 | 5618 | SV *const_sv; |
b48b272a NC |
5619 | /* If the subroutine has no body, no attributes, and no builtin attributes |
5620 | then it's just a sub declaration, and we may be able to get away with | |
5621 | storing with a placeholder scalar in the symbol table, rather than a | |
5622 | full GV and CV. If anything is present then it will take a full CV to | |
5623 | store it. */ | |
5624 | const I32 gv_fetch_flags | |
eb8433b7 NC |
5625 | = (block || attrs || (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS) |
5626 | || PL_madskills) | |
b48b272a | 5627 | ? GV_ADDMULTI : GV_ADDMULTI | GV_NOINIT; |
4ea561bc | 5628 | const char * const name = o ? SvPV_nolen_const(cSVOPo->op_sv) : NULL; |
ed4a8a9b | 5629 | bool has_name; |
8e742a20 MHM |
5630 | |
5631 | if (proto) { | |
5632 | assert(proto->op_type == OP_CONST); | |
4ea561bc | 5633 | ps = SvPV_const(((SVOP*)proto)->op_sv, ps_len); |
8e742a20 MHM |
5634 | } |
5635 | else | |
bd61b366 | 5636 | ps = NULL; |
8e742a20 | 5637 | |
ed4a8a9b NC |
5638 | if (name) { |
5639 | gv = gv_fetchsv(cSVOPo->op_sv, gv_fetch_flags, SVt_PVCV); | |
5640 | has_name = TRUE; | |
5641 | } else if (PERLDB_NAMEANON && CopLINE(PL_curcop)) { | |
aec46f14 | 5642 | SV * const sv = sv_newmortal(); |
c99da370 JH |
5643 | Perl_sv_setpvf(aTHX_ sv, "%s[%s:%"IVdf"]", |
5644 | PL_curstash ? "__ANON__" : "__ANON__::__ANON__", | |
83ee9e09 | 5645 | CopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); |
ed4a8a9b NC |
5646 | gv = gv_fetchsv(sv, gv_fetch_flags, SVt_PVCV); |
5647 | has_name = TRUE; | |
c1754fce NC |
5648 | } else if (PL_curstash) { |
5649 | gv = gv_fetchpvs("__ANON__", gv_fetch_flags, SVt_PVCV); | |
ed4a8a9b | 5650 | has_name = FALSE; |
c1754fce NC |
5651 | } else { |
5652 | gv = gv_fetchpvs("__ANON__::__ANON__", gv_fetch_flags, SVt_PVCV); | |
ed4a8a9b | 5653 | has_name = FALSE; |
c1754fce | 5654 | } |
83ee9e09 | 5655 | |
eb8433b7 NC |
5656 | if (!PL_madskills) { |
5657 | if (o) | |
5658 | SAVEFREEOP(o); | |
5659 | if (proto) | |
5660 | SAVEFREEOP(proto); | |
5661 | if (attrs) | |
5662 | SAVEFREEOP(attrs); | |
5663 | } | |
3fe9a6f1 | 5664 | |
09bef843 | 5665 | if (SvTYPE(gv) != SVt_PVGV) { /* Maybe prototype now, and had at |
55d729e4 GS |
5666 | maximum a prototype before. */ |
5667 | if (SvTYPE(gv) > SVt_NULL) { | |
ad64d0ec | 5668 | if (!SvPOK((const SV *)gv) |
9b387841 | 5669 | && !(SvIOK((const SV *)gv) && SvIVX((const SV *)gv) == -1)) |
f248d071 | 5670 | { |
9b387841 | 5671 | Perl_ck_warner_d(aTHX_ packWARN(WARN_PROTOTYPE), "Runaway prototype"); |
f248d071 | 5672 | } |
ea726b52 | 5673 | cv_ckproto_len((const CV *)gv, NULL, ps, ps_len); |
55d729e4 GS |
5674 | } |
5675 | if (ps) | |
ad64d0ec | 5676 | sv_setpvn(MUTABLE_SV(gv), ps, ps_len); |
55d729e4 | 5677 | else |
ad64d0ec | 5678 | sv_setiv(MUTABLE_SV(gv), -1); |
e1a479c5 | 5679 | |
3280af22 NIS |
5680 | SvREFCNT_dec(PL_compcv); |
5681 | cv = PL_compcv = NULL; | |
beab0874 | 5682 | goto done; |
55d729e4 GS |
5683 | } |
5684 | ||
601f1833 | 5685 | cv = (!name || GvCVGEN(gv)) ? NULL : GvCV(gv); |
beab0874 | 5686 | |
eb8433b7 NC |
5687 | if (!block || !ps || *ps || attrs |
5688 | || (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS) | |
5689 | #ifdef PERL_MAD | |
5690 | || block->op_type == OP_NULL | |
5691 | #endif | |
5692 | ) | |
a0714e2c | 5693 | const_sv = NULL; |
beab0874 | 5694 | else |
601f1833 | 5695 | const_sv = op_const_sv(block, NULL); |
beab0874 JT |
5696 | |
5697 | if (cv) { | |
6867be6d | 5698 | const bool exists = CvROOT(cv) || CvXSUB(cv); |
5bd07a3d | 5699 | |
60ed1d8c GS |
5700 | /* if the subroutine doesn't exist and wasn't pre-declared |
5701 | * with a prototype, assume it will be AUTOLOADed, | |
5702 | * skipping the prototype check | |
5703 | */ | |
5704 | if (exists || SvPOK(cv)) | |
cbf82dd0 | 5705 | cv_ckproto_len(cv, gv, ps, ps_len); |
68dc0745 | 5706 | /* already defined (or promised)? */ |
60ed1d8c | 5707 | if (exists || GvASSUMECV(gv)) { |
eb8433b7 NC |
5708 | if ((!block |
5709 | #ifdef PERL_MAD | |
5710 | || block->op_type == OP_NULL | |
5711 | #endif | |
5712 | )&& !attrs) { | |
d3cea301 SB |
5713 | if (CvFLAGS(PL_compcv)) { |
5714 | /* might have had built-in attrs applied */ | |
963d9ce9 | 5715 | if (CvLVALUE(PL_compcv) && ! CvLVALUE(cv) && ckWARN(WARN_MISC)) |
885ef6f5 GG |
5716 | Perl_warner(aTHX_ packWARN(WARN_MISC), "lvalue attribute ignored after the subroutine has been defined"); |
5717 | CvFLAGS(cv) |= (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS & ~CVf_LVALUE); | |
d3cea301 | 5718 | } |
aa689395 | 5719 | /* just a "sub foo;" when &foo is already defined */ |
3280af22 | 5720 | SAVEFREESV(PL_compcv); |
aa689395 | 5721 | goto done; |
5722 | } | |
eb8433b7 NC |
5723 | if (block |
5724 | #ifdef PERL_MAD | |
5725 | && block->op_type != OP_NULL | |
5726 | #endif | |
5727 | ) { | |
beab0874 JT |
5728 | if (ckWARN(WARN_REDEFINE) |
5729 | || (CvCONST(cv) | |
5730 | && (!const_sv || sv_cmp(cv_const_sv(cv), const_sv)))) | |
5731 | { | |
6867be6d | 5732 | const line_t oldline = CopLINE(PL_curcop); |
53a7735b DM |
5733 | if (PL_parser && PL_parser->copline != NOLINE) |
5734 | CopLINE_set(PL_curcop, PL_parser->copline); | |
9014280d | 5735 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), |
666ea192 JH |
5736 | CvCONST(cv) ? "Constant subroutine %s redefined" |
5737 | : "Subroutine %s redefined", name); | |
beab0874 JT |
5738 | CopLINE_set(PL_curcop, oldline); |
5739 | } | |
eb8433b7 NC |
5740 | #ifdef PERL_MAD |
5741 | if (!PL_minus_c) /* keep old one around for madskills */ | |
5742 | #endif | |
5743 | { | |
5744 | /* (PL_madskills unset in used file.) */ | |
5745 | SvREFCNT_dec(cv); | |
5746 | } | |
601f1833 | 5747 | cv = NULL; |
79072805 | 5748 | } |
79072805 LW |
5749 | } |
5750 | } | |
beab0874 | 5751 | if (const_sv) { |
f84c484e | 5752 | SvREFCNT_inc_simple_void_NN(const_sv); |
beab0874 | 5753 | if (cv) { |
0768512c | 5754 | assert(!CvROOT(cv) && !CvCONST(cv)); |
ad64d0ec | 5755 | sv_setpvs(MUTABLE_SV(cv), ""); /* prototype is "" */ |
beab0874 JT |
5756 | CvXSUBANY(cv).any_ptr = const_sv; |
5757 | CvXSUB(cv) = const_sv_xsub; | |
5758 | CvCONST_on(cv); | |
d04ba589 | 5759 | CvISXSUB_on(cv); |
beab0874 JT |
5760 | } |
5761 | else { | |
601f1833 | 5762 | GvCV(gv) = NULL; |
beab0874 JT |
5763 | cv = newCONSTSUB(NULL, name, const_sv); |
5764 | } | |
e1a479c5 BB |
5765 | mro_method_changed_in( /* sub Foo::Bar () { 123 } */ |
5766 | (CvGV(cv) && GvSTASH(CvGV(cv))) | |
5767 | ? GvSTASH(CvGV(cv)) | |
5768 | : CvSTASH(cv) | |
5769 | ? CvSTASH(cv) | |
5770 | : PL_curstash | |
5771 | ); | |
eb8433b7 NC |
5772 | if (PL_madskills) |
5773 | goto install_block; | |
beab0874 JT |
5774 | op_free(block); |
5775 | SvREFCNT_dec(PL_compcv); | |
5776 | PL_compcv = NULL; | |
beab0874 JT |
5777 | goto done; |
5778 | } | |
09330df8 Z |
5779 | if (cv) { /* must reuse cv if autoloaded */ |
5780 | /* transfer PL_compcv to cv */ | |
5781 | if (block | |
eb8433b7 | 5782 | #ifdef PERL_MAD |
09330df8 | 5783 | && block->op_type != OP_NULL |
eb8433b7 | 5784 | #endif |
09330df8 | 5785 | ) { |
eac910c8 | 5786 | cv_flags_t existing_builtin_attrs = CvFLAGS(cv) & CVf_BUILTIN_ATTRS; |
09330df8 | 5787 | cv_undef(cv); |
eac910c8 | 5788 | CvFLAGS(cv) = CvFLAGS(PL_compcv) | existing_builtin_attrs; |
09330df8 Z |
5789 | if (!CvWEAKOUTSIDE(cv)) |
5790 | SvREFCNT_dec(CvOUTSIDE(cv)); | |
5791 | CvOUTSIDE(cv) = CvOUTSIDE(PL_compcv); | |
5792 | CvOUTSIDE_SEQ(cv) = CvOUTSIDE_SEQ(PL_compcv); | |
5793 | CvOUTSIDE(PL_compcv) = 0; | |
5794 | CvPADLIST(cv) = CvPADLIST(PL_compcv); | |
5795 | CvPADLIST(PL_compcv) = 0; | |
5796 | /* inner references to PL_compcv must be fixed up ... */ | |
5797 | pad_fixup_inner_anons(CvPADLIST(cv), PL_compcv, cv); | |
5798 | if (PERLDB_INTER)/* Advice debugger on the new sub. */ | |
5799 | ++PL_sub_generation; | |
09bef843 SB |
5800 | } |
5801 | else { | |
09330df8 Z |
5802 | /* Might have had built-in attributes applied -- propagate them. */ |
5803 | CvFLAGS(cv) |= (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS); | |
09bef843 | 5804 | } |
282f25c9 | 5805 | /* ... before we throw it away */ |
3280af22 | 5806 | SvREFCNT_dec(PL_compcv); |
b5c19bd7 | 5807 | PL_compcv = cv; |
a0d0e21e LW |
5808 | } |
5809 | else { | |
3280af22 | 5810 | cv = PL_compcv; |
44a8e56a | 5811 | if (name) { |
5812 | GvCV(gv) = cv; | |
eb8433b7 NC |
5813 | if (PL_madskills) { |
5814 | if (strEQ(name, "import")) { | |
ad64d0ec | 5815 | PL_formfeed = MUTABLE_SV(cv); |
06f07c2f | 5816 | /* diag_listed_as: SKIPME */ |
fea10cf6 | 5817 | Perl_warner(aTHX_ packWARN(WARN_VOID), "0x%"UVxf"\n", PTR2UV(cv)); |
eb8433b7 NC |
5818 | } |
5819 | } | |
44a8e56a | 5820 | GvCVGEN(gv) = 0; |
e1a479c5 | 5821 | mro_method_changed_in(GvSTASH(gv)); /* sub Foo::bar { (shift)+1 } */ |
44a8e56a | 5822 | } |
a0d0e21e | 5823 | } |
09330df8 Z |
5824 | if (!CvGV(cv)) { |
5825 | CvGV(cv) = gv; | |
5826 | CvFILE_set_from_cop(cv, PL_curcop); | |
5827 | CvSTASH(cv) = PL_curstash; | |
5828 | } | |
5829 | if (attrs) { | |
5830 | /* Need to do a C<use attributes $stash_of_cv,\&cv,@attrs>. */ | |
5831 | HV *stash = name && GvSTASH(CvGV(cv)) ? GvSTASH(CvGV(cv)) : PL_curstash; | |
5832 | apply_attrs(stash, MUTABLE_SV(cv), attrs, FALSE); | |
5833 | } | |
8990e307 | 5834 | |
3fe9a6f1 | 5835 | if (ps) |
ad64d0ec | 5836 | sv_setpvn(MUTABLE_SV(cv), ps, ps_len); |
4633a7c4 | 5837 | |
13765c85 | 5838 | if (PL_parser && PL_parser->error_count) { |
c07a80fd | 5839 | op_free(block); |
5f66b61c | 5840 | block = NULL; |
68dc0745 | 5841 | if (name) { |
6867be6d | 5842 | const char *s = strrchr(name, ':'); |
68dc0745 | 5843 | s = s ? s+1 : name; |
6d4c2119 | 5844 | if (strEQ(s, "BEGIN")) { |
e1ec3a88 | 5845 | const char not_safe[] = |
6d4c2119 | 5846 | "BEGIN not safe after errors--compilation aborted"; |
faef0170 | 5847 | if (PL_in_eval & EVAL_KEEPERR) |
cea2e8a9 | 5848 | Perl_croak(aTHX_ not_safe); |
6d4c2119 CS |
5849 | else { |
5850 | /* force display of errors found but not reported */ | |
38a03e6e | 5851 | sv_catpv(ERRSV, not_safe); |
be2597df | 5852 | Perl_croak(aTHX_ "%"SVf, SVfARG(ERRSV)); |
6d4c2119 CS |
5853 | } |
5854 | } | |
68dc0745 | 5855 | } |
c07a80fd | 5856 | } |
eb8433b7 | 5857 | install_block: |
beab0874 JT |
5858 | if (!block) |
5859 | goto done; | |
a0d0e21e | 5860 | |
aac018bb NC |
5861 | /* If we assign an optree to a PVCV, then we've defined a subroutine that |
5862 | the debugger could be able to set a breakpoint in, so signal to | |
5863 | pp_entereval that it should not throw away any saved lines at scope | |
5864 | exit. */ | |
5865 | ||
fd06b02c | 5866 | PL_breakable_sub_gen++; |
7766f137 | 5867 | if (CvLVALUE(cv)) { |
78f9721b SM |
5868 | CvROOT(cv) = newUNOP(OP_LEAVESUBLV, 0, |
5869 | mod(scalarseq(block), OP_LEAVESUBLV)); | |
7e5d8ed2 | 5870 | block->op_attached = 1; |
7766f137 GS |
5871 | } |
5872 | else { | |
09c2fd24 AE |
5873 | /* This makes sub {}; work as expected. */ |
5874 | if (block->op_type == OP_STUB) { | |
1496a290 | 5875 | OP* const newblock = newSTATEOP(0, NULL, 0); |
eb8433b7 NC |
5876 | #ifdef PERL_MAD |
5877 | op_getmad(block,newblock,'B'); | |
5878 | #else | |
09c2fd24 | 5879 | op_free(block); |
eb8433b7 NC |
5880 | #endif |
5881 | block = newblock; | |
09c2fd24 | 5882 | } |
7e5d8ed2 DM |
5883 | else |
5884 | block->op_attached = 1; | |
7766f137 GS |
5885 | CvROOT(cv) = newUNOP(OP_LEAVESUB, 0, scalarseq(block)); |
5886 | } | |
5887 | CvROOT(cv)->op_private |= OPpREFCOUNTED; | |
5888 | OpREFCNT_set(CvROOT(cv), 1); | |
5889 | CvSTART(cv) = LINKLIST(CvROOT(cv)); | |
5890 | CvROOT(cv)->op_next = 0; | |
a2efc822 | 5891 | CALL_PEEP(CvSTART(cv)); |
7766f137 GS |
5892 | |
5893 | /* now that optimizer has done its work, adjust pad values */ | |
54310121 | 5894 | |
dd2155a4 DM |
5895 | pad_tidy(CvCLONE(cv) ? padtidy_SUBCLONE : padtidy_SUB); |
5896 | ||
5897 | if (CvCLONE(cv)) { | |
beab0874 JT |
5898 | assert(!CvCONST(cv)); |
5899 | if (ps && !*ps && op_const_sv(block, cv)) | |
5900 | CvCONST_on(cv); | |
a0d0e21e | 5901 | } |
79072805 | 5902 | |
ed4a8a9b | 5903 | if (has_name) { |
3280af22 | 5904 | if (PERLDB_SUBLINE && PL_curstash != PL_debstash) { |
561b68a9 | 5905 | SV * const sv = newSV(0); |
c4420975 | 5906 | SV * const tmpstr = sv_newmortal(); |
5c1737d1 NC |
5907 | GV * const db_postponed = gv_fetchpvs("DB::postponed", |
5908 | GV_ADDMULTI, SVt_PVHV); | |
44a8e56a | 5909 | HV *hv; |
5910 | ||
ed094faf GS |
5911 | Perl_sv_setpvf(aTHX_ sv, "%s:%ld-%ld", |
5912 | CopFILE(PL_curcop), | |
cc49e20b | 5913 | (long)PL_subline, (long)CopLINE(PL_curcop)); |
bd61b366 | 5914 | gv_efullname3(tmpstr, gv, NULL); |
04fe65b0 RGS |
5915 | (void)hv_store(GvHV(PL_DBsub), SvPVX_const(tmpstr), |
5916 | SvCUR(tmpstr), sv, 0); | |
44a8e56a | 5917 | hv = GvHVn(db_postponed); |
551405c4 AL |
5918 | if (HvFILL(hv) > 0 && hv_exists(hv, SvPVX_const(tmpstr), SvCUR(tmpstr))) { |
5919 | CV * const pcv = GvCV(db_postponed); | |
5920 | if (pcv) { | |
5921 | dSP; | |
5922 | PUSHMARK(SP); | |
5923 | XPUSHs(tmpstr); | |
5924 | PUTBACK; | |
ad64d0ec | 5925 | call_sv(MUTABLE_SV(pcv), G_DISCARD); |
551405c4 | 5926 | } |
44a8e56a | 5927 | } |
5928 | } | |
79072805 | 5929 | |
13765c85 | 5930 | if (name && ! (PL_parser && PL_parser->error_count)) |
0cd10f52 | 5931 | process_special_blocks(name, gv, cv); |
33fb7a6e | 5932 | } |
ed094faf | 5933 | |
33fb7a6e | 5934 | done: |
53a7735b DM |
5935 | if (PL_parser) |
5936 | PL_parser->copline = NOLINE; | |
33fb7a6e NC |
5937 | LEAVE_SCOPE(floor); |
5938 | return cv; | |
5939 | } | |
ed094faf | 5940 | |
33fb7a6e NC |
5941 | STATIC void |
5942 | S_process_special_blocks(pTHX_ const char *const fullname, GV *const gv, | |
5943 | CV *const cv) | |
5944 | { | |
5945 | const char *const colon = strrchr(fullname,':'); | |
5946 | const char *const name = colon ? colon + 1 : fullname; | |
5947 | ||
7918f24d NC |
5948 | PERL_ARGS_ASSERT_PROCESS_SPECIAL_BLOCKS; |
5949 | ||
33fb7a6e | 5950 | if (*name == 'B') { |
6952d67e | 5951 | if (strEQ(name, "BEGIN")) { |
6867be6d | 5952 | const I32 oldscope = PL_scopestack_ix; |
28757baa | 5953 | ENTER; |
57843af0 GS |
5954 | SAVECOPFILE(&PL_compiling); |
5955 | SAVECOPLINE(&PL_compiling); | |
28757baa | 5956 | |
a58fb6f9 | 5957 | DEBUG_x( dump_sub(gv) ); |
ad64d0ec | 5958 | Perl_av_create_and_push(aTHX_ &PL_beginav, MUTABLE_SV(cv)); |
ea2f84a3 | 5959 | GvCV(gv) = 0; /* cv has been hijacked */ |
3280af22 | 5960 | call_list(oldscope, PL_beginav); |
a6006777 | 5961 | |
3280af22 | 5962 | PL_curcop = &PL_compiling; |
623e6609 | 5963 | CopHINTS_set(&PL_compiling, PL_hints); |
28757baa | 5964 | LEAVE; |
5965 | } | |
33fb7a6e NC |
5966 | else |
5967 | return; | |
5968 | } else { | |
5969 | if (*name == 'E') { | |
5970 | if strEQ(name, "END") { | |
a58fb6f9 | 5971 | DEBUG_x( dump_sub(gv) ); |
ad64d0ec | 5972 | Perl_av_create_and_unshift_one(aTHX_ &PL_endav, MUTABLE_SV(cv)); |
33fb7a6e NC |
5973 | } else |
5974 | return; | |
5975 | } else if (*name == 'U') { | |
5976 | if (strEQ(name, "UNITCHECK")) { | |
5977 | /* It's never too late to run a unitcheck block */ | |
ad64d0ec | 5978 | Perl_av_create_and_unshift_one(aTHX_ &PL_unitcheckav, MUTABLE_SV(cv)); |
33fb7a6e NC |
5979 | } |
5980 | else | |
5981 | return; | |
5982 | } else if (*name == 'C') { | |
5983 | if (strEQ(name, "CHECK")) { | |
a2a5de95 NC |
5984 | if (PL_main_start) |
5985 | Perl_ck_warner(aTHX_ packWARN(WARN_VOID), | |
5986 | "Too late to run CHECK block"); | |
ad64d0ec | 5987 | Perl_av_create_and_unshift_one(aTHX_ &PL_checkav, MUTABLE_SV(cv)); |
33fb7a6e NC |
5988 | } |
5989 | else | |
5990 | return; | |
5991 | } else if (*name == 'I') { | |
5992 | if (strEQ(name, "INIT")) { | |
a2a5de95 NC |
5993 | if (PL_main_start) |
5994 | Perl_ck_warner(aTHX_ packWARN(WARN_VOID), | |
5995 | "Too late to run INIT block"); | |
ad64d0ec | 5996 | Perl_av_create_and_push(aTHX_ &PL_initav, MUTABLE_SV(cv)); |
33fb7a6e NC |
5997 | } |
5998 | else | |
5999 | return; | |
6000 | } else | |
6001 | return; | |
a58fb6f9 | 6002 | DEBUG_x( dump_sub(gv) ); |
33fb7a6e | 6003 | GvCV(gv) = 0; /* cv has been hijacked */ |
79072805 | 6004 | } |
79072805 LW |
6005 | } |
6006 | ||
954c1994 GS |
6007 | /* |
6008 | =for apidoc newCONSTSUB | |
6009 | ||
6010 | Creates a constant sub equivalent to Perl C<sub FOO () { 123 }> which is | |
6011 | eligible for inlining at compile-time. | |
6012 | ||
99ab892b NC |
6013 | Passing NULL for SV creates a constant sub equivalent to C<sub BAR () {}>, |
6014 | which won't be called if used as a destructor, but will suppress the overhead | |
6015 | of a call to C<AUTOLOAD>. (This form, however, isn't eligible for inlining at | |
6016 | compile time.) | |
6017 | ||
954c1994 GS |
6018 | =cut |
6019 | */ | |
6020 | ||
beab0874 | 6021 | CV * |
e1ec3a88 | 6022 | Perl_newCONSTSUB(pTHX_ HV *stash, const char *name, SV *sv) |
5476c433 | 6023 | { |
27da23d5 | 6024 | dVAR; |
beab0874 | 6025 | CV* cv; |
cbf82dd0 | 6026 | #ifdef USE_ITHREADS |
54d012c6 | 6027 | const char *const file = CopFILE(PL_curcop); |
cbf82dd0 NC |
6028 | #else |
6029 | SV *const temp_sv = CopFILESV(PL_curcop); | |
def18e4c | 6030 | const char *const file = temp_sv ? SvPV_nolen_const(temp_sv) : NULL; |
cbf82dd0 | 6031 | #endif |
5476c433 | 6032 | |
11faa288 | 6033 | ENTER; |
11faa288 | 6034 | |
401667e9 DM |
6035 | if (IN_PERL_RUNTIME) { |
6036 | /* at runtime, it's not safe to manipulate PL_curcop: it may be | |
6037 | * an op shared between threads. Use a non-shared COP for our | |
6038 | * dirty work */ | |
6039 | SAVEVPTR(PL_curcop); | |
6040 | PL_curcop = &PL_compiling; | |
6041 | } | |
f4dd75d9 | 6042 | SAVECOPLINE(PL_curcop); |
53a7735b | 6043 | CopLINE_set(PL_curcop, PL_parser ? PL_parser->copline : NOLINE); |
f4dd75d9 GS |
6044 | |
6045 | SAVEHINTS(); | |
3280af22 | 6046 | PL_hints &= ~HINT_BLOCK_SCOPE; |
11faa288 GS |
6047 | |
6048 | if (stash) { | |
6049 | SAVESPTR(PL_curstash); | |
6050 | SAVECOPSTASH(PL_curcop); | |
6051 | PL_curstash = stash; | |
05ec9bb3 | 6052 | CopSTASH_set(PL_curcop,stash); |
11faa288 | 6053 | } |
5476c433 | 6054 | |
cbf82dd0 NC |
6055 | /* file becomes the CvFILE. For an XS, it's supposed to be static storage, |
6056 | and so doesn't get free()d. (It's expected to be from the C pre- | |
6057 | processor __FILE__ directive). But we need a dynamically allocated one, | |
77004dee | 6058 | and we need it to get freed. */ |
54d012c6 NC |
6059 | cv = newXS_flags(name, const_sv_xsub, file ? file : "", "", |
6060 | XS_DYNAMIC_FILENAME); | |
beab0874 JT |
6061 | CvXSUBANY(cv).any_ptr = sv; |
6062 | CvCONST_on(cv); | |
5476c433 | 6063 | |
65e66c80 | 6064 | #ifdef USE_ITHREADS |
02f28d44 MHM |
6065 | if (stash) |
6066 | CopSTASH_free(PL_curcop); | |
65e66c80 | 6067 | #endif |
11faa288 | 6068 | LEAVE; |
beab0874 JT |
6069 | |
6070 | return cv; | |
5476c433 JD |
6071 | } |
6072 | ||
77004dee NC |
6073 | CV * |
6074 | Perl_newXS_flags(pTHX_ const char *name, XSUBADDR_t subaddr, | |
6075 | const char *const filename, const char *const proto, | |
6076 | U32 flags) | |
6077 | { | |
6078 | CV *cv = newXS(name, subaddr, filename); | |
6079 | ||
7918f24d NC |
6080 | PERL_ARGS_ASSERT_NEWXS_FLAGS; |
6081 | ||
77004dee NC |
6082 | if (flags & XS_DYNAMIC_FILENAME) { |
6083 | /* We need to "make arrangements" (ie cheat) to ensure that the | |
6084 | filename lasts as long as the PVCV we just created, but also doesn't | |
6085 | leak */ | |
6086 | STRLEN filename_len = strlen(filename); | |
6087 | STRLEN proto_and_file_len = filename_len; | |
6088 | char *proto_and_file; | |
6089 | STRLEN proto_len; | |
6090 | ||
6091 | if (proto) { | |
6092 | proto_len = strlen(proto); | |
6093 | proto_and_file_len += proto_len; | |
6094 | ||
6095 | Newx(proto_and_file, proto_and_file_len + 1, char); | |
6096 | Copy(proto, proto_and_file, proto_len, char); | |
6097 | Copy(filename, proto_and_file + proto_len, filename_len + 1, char); | |
6098 | } else { | |
6099 | proto_len = 0; | |
6100 | proto_and_file = savepvn(filename, filename_len); | |
6101 | } | |
6102 | ||
6103 | /* This gets free()d. :-) */ | |
ad64d0ec | 6104 | sv_usepvn_flags(MUTABLE_SV(cv), proto_and_file, proto_and_file_len, |
77004dee NC |
6105 | SV_HAS_TRAILING_NUL); |
6106 | if (proto) { | |
6107 | /* This gives us the correct prototype, rather than one with the | |
6108 | file name appended. */ | |
6109 | SvCUR_set(cv, proto_len); | |
6110 | } else { | |
6111 | SvPOK_off(cv); | |
6112 | } | |
81a2b3b6 | 6113 | CvFILE(cv) = proto_and_file + proto_len; |
77004dee | 6114 | } else { |
ad64d0ec | 6115 | sv_setpv(MUTABLE_SV(cv), proto); |
77004dee NC |
6116 | } |
6117 | return cv; | |
6118 | } | |
6119 | ||
954c1994 GS |
6120 | /* |
6121 | =for apidoc U||newXS | |
6122 | ||
77004dee NC |
6123 | Used by C<xsubpp> to hook up XSUBs as Perl subs. I<filename> needs to be |
6124 | static storage, as it is used directly as CvFILE(), without a copy being made. | |
954c1994 GS |
6125 | |
6126 | =cut | |
6127 | */ | |
6128 | ||
57d3b86d | 6129 | CV * |
bfed75c6 | 6130 | Perl_newXS(pTHX_ const char *name, XSUBADDR_t subaddr, const char *filename) |
a0d0e21e | 6131 | { |
97aff369 | 6132 | dVAR; |
666ea192 JH |
6133 | GV * const gv = gv_fetchpv(name ? name : |
6134 | (PL_curstash ? "__ANON__" : "__ANON__::__ANON__"), | |
6135 | GV_ADDMULTI, SVt_PVCV); | |
79072805 | 6136 | register CV *cv; |
44a8e56a | 6137 | |
7918f24d NC |
6138 | PERL_ARGS_ASSERT_NEWXS; |
6139 | ||
1ecdd9a8 HS |
6140 | if (!subaddr) |
6141 | Perl_croak(aTHX_ "panic: no address for '%s' in '%s'", name, filename); | |
6142 | ||
601f1833 | 6143 | if ((cv = (name ? GvCV(gv) : NULL))) { |
44a8e56a | 6144 | if (GvCVGEN(gv)) { |
6145 | /* just a cached method */ | |
6146 | SvREFCNT_dec(cv); | |
601f1833 | 6147 | cv = NULL; |
44a8e56a | 6148 | } |
6149 | else if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
6150 | /* already defined (or promised) */ | |
1df70142 | 6151 | /* XXX It's possible for this HvNAME_get to return null, and get passed into strEQ */ |
66a1b24b AL |
6152 | if (ckWARN(WARN_REDEFINE)) { |
6153 | GV * const gvcv = CvGV(cv); | |
6154 | if (gvcv) { | |
6155 | HV * const stash = GvSTASH(gvcv); | |
6156 | if (stash) { | |
8b38226b AL |
6157 | const char *redefined_name = HvNAME_get(stash); |
6158 | if ( strEQ(redefined_name,"autouse") ) { | |
66a1b24b | 6159 | const line_t oldline = CopLINE(PL_curcop); |
53a7735b DM |
6160 | if (PL_parser && PL_parser->copline != NOLINE) |
6161 | CopLINE_set(PL_curcop, PL_parser->copline); | |
66a1b24b | 6162 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), |
666ea192 JH |
6163 | CvCONST(cv) ? "Constant subroutine %s redefined" |
6164 | : "Subroutine %s redefined" | |
6165 | ,name); | |
66a1b24b AL |
6166 | CopLINE_set(PL_curcop, oldline); |
6167 | } | |
6168 | } | |
6169 | } | |
a0d0e21e LW |
6170 | } |
6171 | SvREFCNT_dec(cv); | |
601f1833 | 6172 | cv = NULL; |
79072805 | 6173 | } |
79072805 | 6174 | } |
44a8e56a | 6175 | |
6176 | if (cv) /* must reuse cv if autoloaded */ | |
6177 | cv_undef(cv); | |
a0d0e21e | 6178 | else { |
ea726b52 | 6179 | cv = MUTABLE_CV(newSV_type(SVt_PVCV)); |
44a8e56a | 6180 | if (name) { |
6181 | GvCV(gv) = cv; | |
6182 | GvCVGEN(gv) = 0; | |
e1a479c5 | 6183 | mro_method_changed_in(GvSTASH(gv)); /* newXS */ |
44a8e56a | 6184 | } |
a0d0e21e | 6185 | } |
65c50114 | 6186 | CvGV(cv) = gv; |
b195d487 | 6187 | (void)gv_fetchfile(filename); |
dd374669 | 6188 | CvFILE(cv) = (char *)filename; /* NOTE: not copied, as it is expected to be |
57843af0 | 6189 | an external constant string */ |
d04ba589 | 6190 | CvISXSUB_on(cv); |
a0d0e21e | 6191 | CvXSUB(cv) = subaddr; |
44a8e56a | 6192 | |
33fb7a6e NC |
6193 | if (name) |
6194 | process_special_blocks(name, gv, cv); | |
8990e307 | 6195 | else |
a5f75d66 | 6196 | CvANON_on(cv); |
44a8e56a | 6197 | |
a0d0e21e | 6198 | return cv; |
79072805 LW |
6199 | } |
6200 | ||
eb8433b7 NC |
6201 | #ifdef PERL_MAD |
6202 | OP * | |
6203 | #else | |
79072805 | 6204 | void |
eb8433b7 | 6205 | #endif |
864dbfa3 | 6206 | Perl_newFORM(pTHX_ I32 floor, OP *o, OP *block) |
79072805 | 6207 | { |
97aff369 | 6208 | dVAR; |
79072805 | 6209 | register CV *cv; |
eb8433b7 NC |
6210 | #ifdef PERL_MAD |
6211 | OP* pegop = newOP(OP_NULL, 0); | |
6212 | #endif | |
79072805 | 6213 | |
0bd48802 | 6214 | GV * const gv = o |
f776e3cd | 6215 | ? gv_fetchsv(cSVOPo->op_sv, GV_ADD, SVt_PVFM) |
fafc274c | 6216 | : gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVFM); |
0bd48802 | 6217 | |
a5f75d66 | 6218 | GvMULTI_on(gv); |
155aba94 | 6219 | if ((cv = GvFORM(gv))) { |
599cee73 | 6220 | if (ckWARN(WARN_REDEFINE)) { |
6867be6d | 6221 | const line_t oldline = CopLINE(PL_curcop); |
53a7735b DM |
6222 | if (PL_parser && PL_parser->copline != NOLINE) |
6223 | CopLINE_set(PL_curcop, PL_parser->copline); | |
ee6d2783 NC |
6224 | if (o) { |
6225 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), | |
6226 | "Format %"SVf" redefined", SVfARG(cSVOPo->op_sv)); | |
6227 | } else { | |
6228 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), | |
6229 | "Format STDOUT redefined"); | |
6230 | } | |
57843af0 | 6231 | CopLINE_set(PL_curcop, oldline); |
79072805 | 6232 | } |
8990e307 | 6233 | SvREFCNT_dec(cv); |
79072805 | 6234 | } |
3280af22 | 6235 | cv = PL_compcv; |
79072805 | 6236 | GvFORM(gv) = cv; |
65c50114 | 6237 | CvGV(cv) = gv; |
a636914a | 6238 | CvFILE_set_from_cop(cv, PL_curcop); |
79072805 | 6239 | |
a0d0e21e | 6240 | |
dd2155a4 | 6241 | pad_tidy(padtidy_FORMAT); |
79072805 | 6242 | CvROOT(cv) = newUNOP(OP_LEAVEWRITE, 0, scalarseq(block)); |
7934575e GS |
6243 | CvROOT(cv)->op_private |= OPpREFCOUNTED; |
6244 | OpREFCNT_set(CvROOT(cv), 1); | |
79072805 LW |
6245 | CvSTART(cv) = LINKLIST(CvROOT(cv)); |
6246 | CvROOT(cv)->op_next = 0; | |
a2efc822 | 6247 | CALL_PEEP(CvSTART(cv)); |
eb8433b7 NC |
6248 | #ifdef PERL_MAD |
6249 | op_getmad(o,pegop,'n'); | |
6250 | op_getmad_weak(block, pegop, 'b'); | |
6251 | #else | |
11343788 | 6252 | op_free(o); |
eb8433b7 | 6253 | #endif |
53a7735b DM |
6254 | if (PL_parser) |
6255 | PL_parser->copline = NOLINE; | |
8990e307 | 6256 | LEAVE_SCOPE(floor); |
eb8433b7 NC |
6257 | #ifdef PERL_MAD |
6258 | return pegop; | |
6259 | #endif | |
79072805 LW |
6260 | } |
6261 | ||
6262 | OP * | |
864dbfa3 | 6263 | Perl_newANONLIST(pTHX_ OP *o) |
79072805 | 6264 | { |
78c72037 | 6265 | return convert(OP_ANONLIST, OPf_SPECIAL, o); |
79072805 LW |
6266 | } |
6267 | ||
6268 | OP * | |
864dbfa3 | 6269 | Perl_newANONHASH(pTHX_ OP *o) |
79072805 | 6270 | { |
78c72037 | 6271 | return convert(OP_ANONHASH, OPf_SPECIAL, o); |
a0d0e21e LW |
6272 | } |
6273 | ||
6274 | OP * | |
864dbfa3 | 6275 | Perl_newANONSUB(pTHX_ I32 floor, OP *proto, OP *block) |
a0d0e21e | 6276 | { |
5f66b61c | 6277 | return newANONATTRSUB(floor, proto, NULL, block); |
09bef843 SB |
6278 | } |
6279 | ||
6280 | OP * | |
6281 | Perl_newANONATTRSUB(pTHX_ I32 floor, OP *proto, OP *attrs, OP *block) | |
6282 | { | |
a0d0e21e | 6283 | return newUNOP(OP_REFGEN, 0, |
09bef843 | 6284 | newSVOP(OP_ANONCODE, 0, |
ad64d0ec | 6285 | MUTABLE_SV(newATTRSUB(floor, 0, proto, attrs, block)))); |
79072805 LW |
6286 | } |
6287 | ||
6288 | OP * | |
864dbfa3 | 6289 | Perl_oopsAV(pTHX_ OP *o) |
79072805 | 6290 | { |
27da23d5 | 6291 | dVAR; |
7918f24d NC |
6292 | |
6293 | PERL_ARGS_ASSERT_OOPSAV; | |
6294 | ||
ed6116ce LW |
6295 | switch (o->op_type) { |
6296 | case OP_PADSV: | |
6297 | o->op_type = OP_PADAV; | |
22c35a8c | 6298 | o->op_ppaddr = PL_ppaddr[OP_PADAV]; |
51e247a3 | 6299 | return ref(o, OP_RV2AV); |
b2ffa427 | 6300 | |
ed6116ce | 6301 | case OP_RV2SV: |
79072805 | 6302 | o->op_type = OP_RV2AV; |
22c35a8c | 6303 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
79072805 | 6304 | ref(o, OP_RV2AV); |
ed6116ce LW |
6305 | break; |
6306 | ||
6307 | default: | |
9b387841 | 6308 | Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL), "oops: oopsAV"); |
ed6116ce LW |
6309 | break; |
6310 | } | |
79072805 LW |
6311 | return o; |
6312 | } | |
6313 | ||
6314 | OP * | |
864dbfa3 | 6315 | Perl_oopsHV(pTHX_ OP *o) |
79072805 | 6316 | { |
27da23d5 | 6317 | dVAR; |
7918f24d NC |
6318 | |
6319 | PERL_ARGS_ASSERT_OOPSHV; | |
6320 | ||
ed6116ce LW |
6321 | switch (o->op_type) { |
6322 | case OP_PADSV: | |
6323 | case OP_PADAV: | |
6324 | o->op_type = OP_PADHV; | |
22c35a8c | 6325 | o->op_ppaddr = PL_ppaddr[OP_PADHV]; |
51e247a3 | 6326 | return ref(o, OP_RV2HV); |
ed6116ce LW |
6327 | |
6328 | case OP_RV2SV: | |
6329 | case OP_RV2AV: | |
79072805 | 6330 | o->op_type = OP_RV2HV; |
22c35a8c | 6331 | o->op_ppaddr = PL_ppaddr[OP_RV2HV]; |
79072805 | 6332 | ref(o, OP_RV2HV); |
ed6116ce LW |
6333 | break; |
6334 | ||
6335 | default: | |
9b387841 | 6336 | Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL), "oops: oopsHV"); |
ed6116ce LW |
6337 | break; |
6338 | } | |
79072805 LW |
6339 | return o; |
6340 | } | |
6341 | ||
6342 | OP * | |
864dbfa3 | 6343 | Perl_newAVREF(pTHX_ OP *o) |
79072805 | 6344 | { |
27da23d5 | 6345 | dVAR; |
7918f24d NC |
6346 | |
6347 | PERL_ARGS_ASSERT_NEWAVREF; | |
6348 | ||
ed6116ce LW |
6349 | if (o->op_type == OP_PADANY) { |
6350 | o->op_type = OP_PADAV; | |
22c35a8c | 6351 | o->op_ppaddr = PL_ppaddr[OP_PADAV]; |
93a17b20 | 6352 | return o; |
ed6116ce | 6353 | } |
a2a5de95 | 6354 | else if ((o->op_type == OP_RV2AV || o->op_type == OP_PADAV)) { |
d1d15184 | 6355 | Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED), |
a2a5de95 | 6356 | "Using an array as a reference is deprecated"); |
a1063b2d | 6357 | } |
79072805 LW |
6358 | return newUNOP(OP_RV2AV, 0, scalar(o)); |
6359 | } | |
6360 | ||
6361 | OP * | |
864dbfa3 | 6362 | Perl_newGVREF(pTHX_ I32 type, OP *o) |
79072805 | 6363 | { |
82092f1d | 6364 | if (type == OP_MAPSTART || type == OP_GREPSTART || type == OP_SORT) |
a0d0e21e | 6365 | return newUNOP(OP_NULL, 0, o); |
748a9306 | 6366 | return ref(newUNOP(OP_RV2GV, OPf_REF, o), type); |
79072805 LW |
6367 | } |
6368 | ||
6369 | OP * | |
864dbfa3 | 6370 | Perl_newHVREF(pTHX_ OP *o) |
79072805 | 6371 | { |
27da23d5 | 6372 | dVAR; |
7918f24d NC |
6373 | |
6374 | PERL_ARGS_ASSERT_NEWHVREF; | |
6375 | ||
ed6116ce LW |
6376 | if (o->op_type == OP_PADANY) { |
6377 | o->op_type = OP_PADHV; | |
22c35a8c | 6378 | o->op_ppaddr = PL_ppaddr[OP_PADHV]; |
93a17b20 | 6379 | return o; |
ed6116ce | 6380 | } |
a2a5de95 | 6381 | else if ((o->op_type == OP_RV2HV || o->op_type == OP_PADHV)) { |
d1d15184 | 6382 | Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED), |
a2a5de95 | 6383 | "Using a hash as a reference is deprecated"); |
a1063b2d | 6384 | } |
79072805 LW |
6385 | return newUNOP(OP_RV2HV, 0, scalar(o)); |
6386 | } | |
6387 | ||
6388 | OP * | |
864dbfa3 | 6389 | Perl_newCVREF(pTHX_ I32 flags, OP *o) |
79072805 | 6390 | { |
c07a80fd | 6391 | return newUNOP(OP_RV2CV, flags, scalar(o)); |
79072805 LW |
6392 | } |
6393 | ||
6394 | OP * | |
864dbfa3 | 6395 | Perl_newSVREF(pTHX_ OP *o) |
79072805 | 6396 | { |
27da23d5 | 6397 | dVAR; |
7918f24d NC |
6398 | |
6399 | PERL_ARGS_ASSERT_NEWSVREF; | |
6400 | ||
ed6116ce LW |
6401 | if (o->op_type == OP_PADANY) { |
6402 | o->op_type = OP_PADSV; | |
22c35a8c | 6403 | o->op_ppaddr = PL_ppaddr[OP_PADSV]; |
93a17b20 | 6404 | return o; |
ed6116ce | 6405 | } |
79072805 LW |
6406 | return newUNOP(OP_RV2SV, 0, scalar(o)); |
6407 | } | |
6408 | ||
61b743bb DM |
6409 | /* Check routines. See the comments at the top of this file for details |
6410 | * on when these are called */ | |
79072805 LW |
6411 | |
6412 | OP * | |
cea2e8a9 | 6413 | Perl_ck_anoncode(pTHX_ OP *o) |
5f05dabc | 6414 | { |
7918f24d NC |
6415 | PERL_ARGS_ASSERT_CK_ANONCODE; |
6416 | ||
dd2155a4 | 6417 | cSVOPo->op_targ = pad_add_anon(cSVOPo->op_sv, o->op_type); |
eb8433b7 | 6418 | if (!PL_madskills) |
1d866c12 | 6419 | cSVOPo->op_sv = NULL; |
5dc0d613 | 6420 | return o; |
5f05dabc | 6421 | } |
6422 | ||
6423 | OP * | |
cea2e8a9 | 6424 | Perl_ck_bitop(pTHX_ OP *o) |
55497cff | 6425 | { |
97aff369 | 6426 | dVAR; |
7918f24d NC |
6427 | |
6428 | PERL_ARGS_ASSERT_CK_BITOP; | |
6429 | ||
276b2a0c RGS |
6430 | #define OP_IS_NUMCOMPARE(op) \ |
6431 | ((op) == OP_LT || (op) == OP_I_LT || \ | |
6432 | (op) == OP_GT || (op) == OP_I_GT || \ | |
6433 | (op) == OP_LE || (op) == OP_I_LE || \ | |
6434 | (op) == OP_GE || (op) == OP_I_GE || \ | |
6435 | (op) == OP_EQ || (op) == OP_I_EQ || \ | |
6436 | (op) == OP_NE || (op) == OP_I_NE || \ | |
6437 | (op) == OP_NCMP || (op) == OP_I_NCMP) | |
d5ec2987 | 6438 | o->op_private = (U8)(PL_hints & HINT_INTEGER); |
2b84528b RGS |
6439 | if (!(o->op_flags & OPf_STACKED) /* Not an assignment */ |
6440 | && (o->op_type == OP_BIT_OR | |
6441 | || o->op_type == OP_BIT_AND | |
6442 | || o->op_type == OP_BIT_XOR)) | |
276b2a0c | 6443 | { |
1df70142 AL |
6444 | const OP * const left = cBINOPo->op_first; |
6445 | const OP * const right = left->op_sibling; | |
96a925ab YST |
6446 | if ((OP_IS_NUMCOMPARE(left->op_type) && |
6447 | (left->op_flags & OPf_PARENS) == 0) || | |
6448 | (OP_IS_NUMCOMPARE(right->op_type) && | |
6449 | (right->op_flags & OPf_PARENS) == 0)) | |
a2a5de95 NC |
6450 | Perl_ck_warner(aTHX_ packWARN(WARN_PRECEDENCE), |
6451 | "Possible precedence problem on bitwise %c operator", | |
6452 | o->op_type == OP_BIT_OR ? '|' | |
6453 | : o->op_type == OP_BIT_AND ? '&' : '^' | |
6454 | ); | |
276b2a0c | 6455 | } |
5dc0d613 | 6456 | return o; |
55497cff | 6457 | } |
6458 | ||
6459 | OP * | |
cea2e8a9 | 6460 | Perl_ck_concat(pTHX_ OP *o) |
79072805 | 6461 | { |
0bd48802 | 6462 | const OP * const kid = cUNOPo->op_first; |
7918f24d NC |
6463 | |
6464 | PERL_ARGS_ASSERT_CK_CONCAT; | |
96a5add6 | 6465 | PERL_UNUSED_CONTEXT; |
7918f24d | 6466 | |
df91b2c5 AE |
6467 | if (kid->op_type == OP_CONCAT && !(kid->op_private & OPpTARGET_MY) && |
6468 | !(kUNOP->op_first->op_flags & OPf_MOD)) | |
0165acc7 | 6469 | o->op_flags |= OPf_STACKED; |
11343788 | 6470 | return o; |
79072805 LW |
6471 | } |
6472 | ||
6473 | OP * | |
cea2e8a9 | 6474 | Perl_ck_spair(pTHX_ OP *o) |
79072805 | 6475 | { |
27da23d5 | 6476 | dVAR; |
7918f24d NC |
6477 | |
6478 | PERL_ARGS_ASSERT_CK_SPAIR; | |
6479 | ||
11343788 | 6480 | if (o->op_flags & OPf_KIDS) { |
79072805 | 6481 | OP* newop; |
a0d0e21e | 6482 | OP* kid; |
6867be6d | 6483 | const OPCODE type = o->op_type; |
5dc0d613 | 6484 | o = modkids(ck_fun(o), type); |
11343788 | 6485 | kid = cUNOPo->op_first; |
a0d0e21e | 6486 | newop = kUNOP->op_first->op_sibling; |
1496a290 AL |
6487 | if (newop) { |
6488 | const OPCODE type = newop->op_type; | |
6489 | if (newop->op_sibling || !(PL_opargs[type] & OA_RETSCALAR) || | |
6490 | type == OP_PADAV || type == OP_PADHV || | |
6491 | type == OP_RV2AV || type == OP_RV2HV) | |
6492 | return o; | |
a0d0e21e | 6493 | } |
eb8433b7 NC |
6494 | #ifdef PERL_MAD |
6495 | op_getmad(kUNOP->op_first,newop,'K'); | |
6496 | #else | |
a0d0e21e | 6497 | op_free(kUNOP->op_first); |
eb8433b7 | 6498 | #endif |
a0d0e21e LW |
6499 | kUNOP->op_first = newop; |
6500 | } | |
22c35a8c | 6501 | o->op_ppaddr = PL_ppaddr[++o->op_type]; |
11343788 | 6502 | return ck_fun(o); |
a0d0e21e LW |
6503 | } |
6504 | ||
6505 | OP * | |
cea2e8a9 | 6506 | Perl_ck_delete(pTHX_ OP *o) |
a0d0e21e | 6507 | { |
7918f24d NC |
6508 | PERL_ARGS_ASSERT_CK_DELETE; |
6509 | ||
11343788 | 6510 | o = ck_fun(o); |
5dc0d613 | 6511 | o->op_private = 0; |
11343788 | 6512 | if (o->op_flags & OPf_KIDS) { |
551405c4 | 6513 | OP * const kid = cUNOPo->op_first; |
01020589 GS |
6514 | switch (kid->op_type) { |
6515 | case OP_ASLICE: | |
6516 | o->op_flags |= OPf_SPECIAL; | |
6517 | /* FALL THROUGH */ | |
6518 | case OP_HSLICE: | |
5dc0d613 | 6519 | o->op_private |= OPpSLICE; |
01020589 GS |
6520 | break; |
6521 | case OP_AELEM: | |
6522 | o->op_flags |= OPf_SPECIAL; | |
6523 | /* FALL THROUGH */ | |
6524 | case OP_HELEM: | |
6525 | break; | |
6526 | default: | |
6527 | Perl_croak(aTHX_ "%s argument is not a HASH or ARRAY element or slice", | |
53e06cf0 | 6528 | OP_DESC(o)); |
01020589 | 6529 | } |
7332a6c4 VP |
6530 | if (kid->op_private & OPpLVAL_INTRO) |
6531 | o->op_private |= OPpLVAL_INTRO; | |
93c66552 | 6532 | op_null(kid); |
79072805 | 6533 | } |
11343788 | 6534 | return o; |
79072805 LW |
6535 | } |
6536 | ||
6537 | OP * | |
96e176bf CL |
6538 | Perl_ck_die(pTHX_ OP *o) |
6539 | { | |
7918f24d NC |
6540 | PERL_ARGS_ASSERT_CK_DIE; |
6541 | ||
96e176bf CL |
6542 | #ifdef VMS |
6543 | if (VMSISH_HUSHED) o->op_private |= OPpHUSH_VMSISH; | |
6544 | #endif | |
6545 | return ck_fun(o); | |
6546 | } | |
6547 | ||
6548 | OP * | |
cea2e8a9 | 6549 | Perl_ck_eof(pTHX_ OP *o) |
79072805 | 6550 | { |
97aff369 | 6551 | dVAR; |
79072805 | 6552 | |
7918f24d NC |
6553 | PERL_ARGS_ASSERT_CK_EOF; |
6554 | ||
11343788 MB |
6555 | if (o->op_flags & OPf_KIDS) { |
6556 | if (cLISTOPo->op_first->op_type == OP_STUB) { | |
1d866c12 AL |
6557 | OP * const newop |
6558 | = newUNOP(o->op_type, OPf_SPECIAL, newGVOP(OP_GV, 0, PL_argvgv)); | |
eb8433b7 NC |
6559 | #ifdef PERL_MAD |
6560 | op_getmad(o,newop,'O'); | |
6561 | #else | |
11343788 | 6562 | op_free(o); |
eb8433b7 NC |
6563 | #endif |
6564 | o = newop; | |
8990e307 | 6565 | } |
11343788 | 6566 | return ck_fun(o); |
79072805 | 6567 | } |
11343788 | 6568 | return o; |
79072805 LW |
6569 | } |
6570 | ||
6571 | OP * | |
cea2e8a9 | 6572 | Perl_ck_eval(pTHX_ OP *o) |
79072805 | 6573 | { |
27da23d5 | 6574 | dVAR; |
7918f24d NC |
6575 | |
6576 | PERL_ARGS_ASSERT_CK_EVAL; | |
6577 | ||
3280af22 | 6578 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 6579 | if (o->op_flags & OPf_KIDS) { |
46c461b5 | 6580 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
79072805 | 6581 | |
93a17b20 | 6582 | if (!kid) { |
11343788 | 6583 | o->op_flags &= ~OPf_KIDS; |
93c66552 | 6584 | op_null(o); |
79072805 | 6585 | } |
b14574b4 | 6586 | else if (kid->op_type == OP_LINESEQ || kid->op_type == OP_STUB) { |
79072805 | 6587 | LOGOP *enter; |
eb8433b7 | 6588 | #ifdef PERL_MAD |
1d866c12 | 6589 | OP* const oldo = o; |
eb8433b7 | 6590 | #endif |
79072805 | 6591 | |
11343788 | 6592 | cUNOPo->op_first = 0; |
eb8433b7 | 6593 | #ifndef PERL_MAD |
11343788 | 6594 | op_free(o); |
eb8433b7 | 6595 | #endif |
79072805 | 6596 | |
b7dc083c | 6597 | NewOp(1101, enter, 1, LOGOP); |
79072805 | 6598 | enter->op_type = OP_ENTERTRY; |
22c35a8c | 6599 | enter->op_ppaddr = PL_ppaddr[OP_ENTERTRY]; |
79072805 LW |
6600 | enter->op_private = 0; |
6601 | ||
6602 | /* establish postfix order */ | |
6603 | enter->op_next = (OP*)enter; | |
6604 | ||
11343788 MB |
6605 | o = prepend_elem(OP_LINESEQ, (OP*)enter, (OP*)kid); |
6606 | o->op_type = OP_LEAVETRY; | |
22c35a8c | 6607 | o->op_ppaddr = PL_ppaddr[OP_LEAVETRY]; |
11343788 | 6608 | enter->op_other = o; |
eb8433b7 | 6609 | op_getmad(oldo,o,'O'); |
11343788 | 6610 | return o; |
79072805 | 6611 | } |
b5c19bd7 | 6612 | else { |
473986ff | 6613 | scalar((OP*)kid); |
b5c19bd7 DM |
6614 | PL_cv_has_eval = 1; |
6615 | } | |
79072805 LW |
6616 | } |
6617 | else { | |
eb8433b7 | 6618 | #ifdef PERL_MAD |
1d866c12 | 6619 | OP* const oldo = o; |
eb8433b7 | 6620 | #else |
11343788 | 6621 | op_free(o); |
eb8433b7 | 6622 | #endif |
54b9620d | 6623 | o = newUNOP(OP_ENTEREVAL, 0, newDEFSVOP()); |
eb8433b7 | 6624 | op_getmad(oldo,o,'O'); |
79072805 | 6625 | } |
3280af22 | 6626 | o->op_targ = (PADOFFSET)PL_hints; |
7168684c | 6627 | if ((PL_hints & HINT_LOCALIZE_HH) != 0 && GvHV(PL_hintgv)) { |
996c9baa VP |
6628 | /* Store a copy of %^H that pp_entereval can pick up. */ |
6629 | OP *hhop = newSVOP(OP_HINTSEVAL, 0, | |
ad64d0ec | 6630 | MUTABLE_SV(Perl_hv_copy_hints_hv(aTHX_ GvHV(PL_hintgv)))); |
0d863452 RH |
6631 | cUNOPo->op_first->op_sibling = hhop; |
6632 | o->op_private |= OPpEVAL_HAS_HH; | |
6633 | } | |
11343788 | 6634 | return o; |
79072805 LW |
6635 | } |
6636 | ||
6637 | OP * | |
d98f61e7 GS |
6638 | Perl_ck_exit(pTHX_ OP *o) |
6639 | { | |
7918f24d NC |
6640 | PERL_ARGS_ASSERT_CK_EXIT; |
6641 | ||
d98f61e7 | 6642 | #ifdef VMS |
551405c4 | 6643 | HV * const table = GvHV(PL_hintgv); |
d98f61e7 | 6644 | if (table) { |
a4fc7abc | 6645 | SV * const * const svp = hv_fetchs(table, "vmsish_exit", FALSE); |
d98f61e7 GS |
6646 | if (svp && *svp && SvTRUE(*svp)) |
6647 | o->op_private |= OPpEXIT_VMSISH; | |
6648 | } | |
96e176bf | 6649 | if (VMSISH_HUSHED) o->op_private |= OPpHUSH_VMSISH; |
d98f61e7 GS |
6650 | #endif |
6651 | return ck_fun(o); | |
6652 | } | |
6653 | ||
6654 | OP * | |
cea2e8a9 | 6655 | Perl_ck_exec(pTHX_ OP *o) |
79072805 | 6656 | { |
7918f24d NC |
6657 | PERL_ARGS_ASSERT_CK_EXEC; |
6658 | ||
11343788 | 6659 | if (o->op_flags & OPf_STACKED) { |
6867be6d | 6660 | OP *kid; |
11343788 MB |
6661 | o = ck_fun(o); |
6662 | kid = cUNOPo->op_first->op_sibling; | |
8990e307 | 6663 | if (kid->op_type == OP_RV2GV) |
93c66552 | 6664 | op_null(kid); |
79072805 | 6665 | } |
463ee0b2 | 6666 | else |
11343788 MB |
6667 | o = listkids(o); |
6668 | return o; | |
79072805 LW |
6669 | } |
6670 | ||
6671 | OP * | |
cea2e8a9 | 6672 | Perl_ck_exists(pTHX_ OP *o) |
5f05dabc | 6673 | { |
97aff369 | 6674 | dVAR; |
7918f24d NC |
6675 | |
6676 | PERL_ARGS_ASSERT_CK_EXISTS; | |
6677 | ||
5196be3e MB |
6678 | o = ck_fun(o); |
6679 | if (o->op_flags & OPf_KIDS) { | |
46c461b5 | 6680 | OP * const kid = cUNOPo->op_first; |
afebc493 GS |
6681 | if (kid->op_type == OP_ENTERSUB) { |
6682 | (void) ref(kid, o->op_type); | |
13765c85 DM |
6683 | if (kid->op_type != OP_RV2CV |
6684 | && !(PL_parser && PL_parser->error_count)) | |
afebc493 | 6685 | Perl_croak(aTHX_ "%s argument is not a subroutine name", |
53e06cf0 | 6686 | OP_DESC(o)); |
afebc493 GS |
6687 | o->op_private |= OPpEXISTS_SUB; |
6688 | } | |
6689 | else if (kid->op_type == OP_AELEM) | |
01020589 GS |
6690 | o->op_flags |= OPf_SPECIAL; |
6691 | else if (kid->op_type != OP_HELEM) | |
b0fdf69e | 6692 | Perl_croak(aTHX_ "%s argument is not a HASH or ARRAY element or a subroutine", |
53e06cf0 | 6693 | OP_DESC(o)); |
93c66552 | 6694 | op_null(kid); |
5f05dabc | 6695 | } |
5196be3e | 6696 | return o; |
5f05dabc | 6697 | } |
6698 | ||
79072805 | 6699 | OP * |
cea2e8a9 | 6700 | Perl_ck_rvconst(pTHX_ register OP *o) |
79072805 | 6701 | { |
27da23d5 | 6702 | dVAR; |
0bd48802 | 6703 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
85e6fe83 | 6704 | |
7918f24d NC |
6705 | PERL_ARGS_ASSERT_CK_RVCONST; |
6706 | ||
3280af22 | 6707 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
e26df76a NC |
6708 | if (o->op_type == OP_RV2CV) |
6709 | o->op_private &= ~1; | |
6710 | ||
79072805 | 6711 | if (kid->op_type == OP_CONST) { |
44a8e56a | 6712 | int iscv; |
6713 | GV *gv; | |
504618e9 | 6714 | SV * const kidsv = kid->op_sv; |
44a8e56a | 6715 | |
779c5bc9 GS |
6716 | /* Is it a constant from cv_const_sv()? */ |
6717 | if (SvROK(kidsv) && SvREADONLY(kidsv)) { | |
0bd48802 | 6718 | SV * const rsv = SvRV(kidsv); |
42d0e0b7 | 6719 | const svtype type = SvTYPE(rsv); |
bd61b366 | 6720 | const char *badtype = NULL; |
779c5bc9 GS |
6721 | |
6722 | switch (o->op_type) { | |
6723 | case OP_RV2SV: | |
42d0e0b7 | 6724 | if (type > SVt_PVMG) |
779c5bc9 GS |
6725 | badtype = "a SCALAR"; |
6726 | break; | |
6727 | case OP_RV2AV: | |
42d0e0b7 | 6728 | if (type != SVt_PVAV) |
779c5bc9 GS |
6729 | badtype = "an ARRAY"; |
6730 | break; | |
6731 | case OP_RV2HV: | |
42d0e0b7 | 6732 | if (type != SVt_PVHV) |
779c5bc9 | 6733 | badtype = "a HASH"; |
779c5bc9 GS |
6734 | break; |
6735 | case OP_RV2CV: | |
42d0e0b7 | 6736 | if (type != SVt_PVCV) |
779c5bc9 GS |
6737 | badtype = "a CODE"; |
6738 | break; | |
6739 | } | |
6740 | if (badtype) | |
cea2e8a9 | 6741 | Perl_croak(aTHX_ "Constant is not %s reference", badtype); |
779c5bc9 GS |
6742 | return o; |
6743 | } | |
ce10b5d1 RGS |
6744 | else if ((o->op_type == OP_RV2HV || o->op_type == OP_RV2SV) && |
6745 | (PL_hints & HINT_STRICT_REFS) && SvPOK(kidsv)) { | |
6746 | /* If this is an access to a stash, disable "strict refs", because | |
6747 | * stashes aren't auto-vivified at compile-time (unless we store | |
6748 | * symbols in them), and we don't want to produce a run-time | |
6749 | * stricture error when auto-vivifying the stash. */ | |
6750 | const char *s = SvPV_nolen(kidsv); | |
6751 | const STRLEN l = SvCUR(kidsv); | |
6752 | if (l > 1 && s[l-1] == ':' && s[l-2] == ':') | |
6753 | o->op_private &= ~HINT_STRICT_REFS; | |
6754 | } | |
6755 | if ((o->op_private & HINT_STRICT_REFS) && (kid->op_private & OPpCONST_BARE)) { | |
5f66b61c | 6756 | const char *badthing; |
5dc0d613 | 6757 | switch (o->op_type) { |
44a8e56a | 6758 | case OP_RV2SV: |
6759 | badthing = "a SCALAR"; | |
6760 | break; | |
6761 | case OP_RV2AV: | |
6762 | badthing = "an ARRAY"; | |
6763 | break; | |
6764 | case OP_RV2HV: | |
6765 | badthing = "a HASH"; | |
6766 | break; | |
5f66b61c AL |
6767 | default: |
6768 | badthing = NULL; | |
6769 | break; | |
44a8e56a | 6770 | } |
6771 | if (badthing) | |
1c846c1f | 6772 | Perl_croak(aTHX_ |
95b63a38 | 6773 | "Can't use bareword (\"%"SVf"\") as %s ref while \"strict refs\" in use", |
be2597df | 6774 | SVfARG(kidsv), badthing); |
44a8e56a | 6775 | } |
93233ece CS |
6776 | /* |
6777 | * This is a little tricky. We only want to add the symbol if we | |
6778 | * didn't add it in the lexer. Otherwise we get duplicate strict | |
6779 | * warnings. But if we didn't add it in the lexer, we must at | |
6780 | * least pretend like we wanted to add it even if it existed before, | |
6781 | * or we get possible typo warnings. OPpCONST_ENTERED says | |
6782 | * whether the lexer already added THIS instance of this symbol. | |
6783 | */ | |
5196be3e | 6784 | iscv = (o->op_type == OP_RV2CV) * 2; |
93233ece | 6785 | do { |
7a5fd60d | 6786 | gv = gv_fetchsv(kidsv, |
748a9306 | 6787 | iscv | !(kid->op_private & OPpCONST_ENTERED), |
a0d0e21e LW |
6788 | iscv |
6789 | ? SVt_PVCV | |
11343788 | 6790 | : o->op_type == OP_RV2SV |
a0d0e21e | 6791 | ? SVt_PV |
11343788 | 6792 | : o->op_type == OP_RV2AV |
a0d0e21e | 6793 | ? SVt_PVAV |
11343788 | 6794 | : o->op_type == OP_RV2HV |
a0d0e21e LW |
6795 | ? SVt_PVHV |
6796 | : SVt_PVGV); | |
93233ece CS |
6797 | } while (!gv && !(kid->op_private & OPpCONST_ENTERED) && !iscv++); |
6798 | if (gv) { | |
6799 | kid->op_type = OP_GV; | |
6800 | SvREFCNT_dec(kid->op_sv); | |
350de78d | 6801 | #ifdef USE_ITHREADS |
638eceb6 | 6802 | /* XXX hack: dependence on sizeof(PADOP) <= sizeof(SVOP) */ |
350de78d | 6803 | kPADOP->op_padix = pad_alloc(OP_GV, SVs_PADTMP); |
dd2155a4 | 6804 | SvREFCNT_dec(PAD_SVl(kPADOP->op_padix)); |
743e66e6 | 6805 | GvIN_PAD_on(gv); |
ad64d0ec | 6806 | PAD_SETSV(kPADOP->op_padix, MUTABLE_SV(SvREFCNT_inc_simple_NN(gv))); |
350de78d | 6807 | #else |
b37c2d43 | 6808 | kid->op_sv = SvREFCNT_inc_simple_NN(gv); |
350de78d | 6809 | #endif |
23f1ca44 | 6810 | kid->op_private = 0; |
76cd736e | 6811 | kid->op_ppaddr = PL_ppaddr[OP_GV]; |
a0d0e21e | 6812 | } |
79072805 | 6813 | } |
11343788 | 6814 | return o; |
79072805 LW |
6815 | } |
6816 | ||
6817 | OP * | |
cea2e8a9 | 6818 | Perl_ck_ftst(pTHX_ OP *o) |
79072805 | 6819 | { |
27da23d5 | 6820 | dVAR; |
6867be6d | 6821 | const I32 type = o->op_type; |
79072805 | 6822 | |
7918f24d NC |
6823 | PERL_ARGS_ASSERT_CK_FTST; |
6824 | ||
d0dca557 | 6825 | if (o->op_flags & OPf_REF) { |
6f207bd3 | 6826 | NOOP; |
d0dca557 JD |
6827 | } |
6828 | else if (o->op_flags & OPf_KIDS && cUNOPo->op_first->op_type != OP_STUB) { | |
551405c4 | 6829 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
1496a290 | 6830 | const OPCODE kidtype = kid->op_type; |
79072805 | 6831 | |
1496a290 | 6832 | if (kidtype == OP_CONST && (kid->op_private & OPpCONST_BARE)) { |
551405c4 | 6833 | OP * const newop = newGVOP(type, OPf_REF, |
f776e3cd | 6834 | gv_fetchsv(kid->op_sv, GV_ADD, SVt_PVIO)); |
eb8433b7 NC |
6835 | #ifdef PERL_MAD |
6836 | op_getmad(o,newop,'O'); | |
6837 | #else | |
11343788 | 6838 | op_free(o); |
eb8433b7 | 6839 | #endif |
1d866c12 | 6840 | return newop; |
79072805 | 6841 | } |
6ecf81d6 | 6842 | if ((PL_hints & HINT_FILETEST_ACCESS) && OP_IS_FILETEST_ACCESS(o->op_type)) |
1af34c76 | 6843 | o->op_private |= OPpFT_ACCESS; |
1496a290 AL |
6844 | if (PL_check[kidtype] == MEMBER_TO_FPTR(Perl_ck_ftst) |
6845 | && kidtype != OP_STAT && kidtype != OP_LSTAT) | |
fbb0b3b3 | 6846 | o->op_private |= OPpFT_STACKED; |
79072805 LW |
6847 | } |
6848 | else { | |
eb8433b7 | 6849 | #ifdef PERL_MAD |
1d866c12 | 6850 | OP* const oldo = o; |
eb8433b7 | 6851 | #else |
11343788 | 6852 | op_free(o); |
eb8433b7 | 6853 | #endif |
79072805 | 6854 | if (type == OP_FTTTY) |
8fde6460 | 6855 | o = newGVOP(type, OPf_REF, PL_stdingv); |
79072805 | 6856 | else |
d0dca557 | 6857 | o = newUNOP(type, 0, newDEFSVOP()); |
eb8433b7 | 6858 | op_getmad(oldo,o,'O'); |
79072805 | 6859 | } |
11343788 | 6860 | return o; |
79072805 LW |
6861 | } |
6862 | ||
6863 | OP * | |
cea2e8a9 | 6864 | Perl_ck_fun(pTHX_ OP *o) |
79072805 | 6865 | { |
97aff369 | 6866 | dVAR; |
6867be6d | 6867 | const int type = o->op_type; |
22c35a8c | 6868 | register I32 oa = PL_opargs[type] >> OASHIFT; |
aeea060c | 6869 | |
7918f24d NC |
6870 | PERL_ARGS_ASSERT_CK_FUN; |
6871 | ||
11343788 | 6872 | if (o->op_flags & OPf_STACKED) { |
79072805 LW |
6873 | if ((oa & OA_OPTIONAL) && (oa >> 4) && !((oa >> 4) & OA_OPTIONAL)) |
6874 | oa &= ~OA_OPTIONAL; | |
6875 | else | |
11343788 | 6876 | return no_fh_allowed(o); |
79072805 LW |
6877 | } |
6878 | ||
11343788 | 6879 | if (o->op_flags & OPf_KIDS) { |
6867be6d AL |
6880 | OP **tokid = &cLISTOPo->op_first; |
6881 | register OP *kid = cLISTOPo->op_first; | |
6882 | OP *sibl; | |
6883 | I32 numargs = 0; | |
6884 | ||
8990e307 | 6885 | if (kid->op_type == OP_PUSHMARK || |
155aba94 | 6886 | (kid->op_type == OP_NULL && kid->op_targ == OP_PUSHMARK)) |
8990e307 | 6887 | { |
79072805 LW |
6888 | tokid = &kid->op_sibling; |
6889 | kid = kid->op_sibling; | |
6890 | } | |
22c35a8c | 6891 | if (!kid && PL_opargs[type] & OA_DEFGV) |
54b9620d | 6892 | *tokid = kid = newDEFSVOP(); |
79072805 LW |
6893 | |
6894 | while (oa && kid) { | |
6895 | numargs++; | |
6896 | sibl = kid->op_sibling; | |
eb8433b7 NC |
6897 | #ifdef PERL_MAD |
6898 | if (!sibl && kid->op_type == OP_STUB) { | |
6899 | numargs--; | |
6900 | break; | |
6901 | } | |
6902 | #endif | |
79072805 LW |
6903 | switch (oa & 7) { |
6904 | case OA_SCALAR: | |
62c18ce2 GS |
6905 | /* list seen where single (scalar) arg expected? */ |
6906 | if (numargs == 1 && !(oa >> 4) | |
6907 | && kid->op_type == OP_LIST && type != OP_SCALAR) | |
6908 | { | |
6909 | return too_many_arguments(o,PL_op_desc[type]); | |
6910 | } | |
79072805 LW |
6911 | scalar(kid); |
6912 | break; | |
6913 | case OA_LIST: | |
6914 | if (oa < 16) { | |
6915 | kid = 0; | |
6916 | continue; | |
6917 | } | |
6918 | else | |
6919 | list(kid); | |
6920 | break; | |
6921 | case OA_AVREF: | |
936edb8b | 6922 | if ((type == OP_PUSH || type == OP_UNSHIFT) |
a2a5de95 NC |
6923 | && !kid->op_sibling) |
6924 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), | |
6925 | "Useless use of %s with no values", | |
6926 | PL_op_desc[type]); | |
b2ffa427 | 6927 | |
79072805 | 6928 | if (kid->op_type == OP_CONST && |
62c18ce2 GS |
6929 | (kid->op_private & OPpCONST_BARE)) |
6930 | { | |
551405c4 | 6931 | OP * const newop = newAVREF(newGVOP(OP_GV, 0, |
f776e3cd | 6932 | gv_fetchsv(((SVOP*)kid)->op_sv, GV_ADD, SVt_PVAV) )); |
d1d15184 | 6933 | Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED), |
a2a5de95 NC |
6934 | "Array @%"SVf" missing the @ in argument %"IVdf" of %s()", |
6935 | SVfARG(((SVOP*)kid)->op_sv), (IV)numargs, PL_op_desc[type]); | |
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 | kid->op_sibling = sibl; | |
6943 | *tokid = kid; | |
6944 | } | |
8990e307 | 6945 | else if (kid->op_type != OP_RV2AV && kid->op_type != OP_PADAV) |
35cd451c | 6946 | bad_type(numargs, "array", PL_op_desc[type], kid); |
a0d0e21e | 6947 | mod(kid, type); |
79072805 LW |
6948 | break; |
6949 | case OA_HVREF: | |
6950 | if (kid->op_type == OP_CONST && | |
62c18ce2 GS |
6951 | (kid->op_private & OPpCONST_BARE)) |
6952 | { | |
551405c4 | 6953 | OP * const newop = newHVREF(newGVOP(OP_GV, 0, |
f776e3cd | 6954 | gv_fetchsv(((SVOP*)kid)->op_sv, GV_ADD, SVt_PVHV) )); |
d1d15184 | 6955 | Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED), |
a2a5de95 NC |
6956 | "Hash %%%"SVf" missing the %% in argument %"IVdf" of %s()", |
6957 | SVfARG(((SVOP*)kid)->op_sv), (IV)numargs, PL_op_desc[type]); | |
eb8433b7 NC |
6958 | #ifdef PERL_MAD |
6959 | op_getmad(kid,newop,'K'); | |
6960 | #else | |
79072805 | 6961 | op_free(kid); |
eb8433b7 | 6962 | #endif |
79072805 LW |
6963 | kid = newop; |
6964 | kid->op_sibling = sibl; | |
6965 | *tokid = kid; | |
6966 | } | |
8990e307 | 6967 | else if (kid->op_type != OP_RV2HV && kid->op_type != OP_PADHV) |
35cd451c | 6968 | bad_type(numargs, "hash", PL_op_desc[type], kid); |
a0d0e21e | 6969 | mod(kid, type); |
79072805 LW |
6970 | break; |
6971 | case OA_CVREF: | |
6972 | { | |
551405c4 | 6973 | OP * const newop = newUNOP(OP_NULL, 0, kid); |
79072805 LW |
6974 | kid->op_sibling = 0; |
6975 | linklist(kid); | |
6976 | newop->op_next = newop; | |
6977 | kid = newop; | |
6978 | kid->op_sibling = sibl; | |
6979 | *tokid = kid; | |
6980 | } | |
6981 | break; | |
6982 | case OA_FILEREF: | |
c340be78 | 6983 | if (kid->op_type != OP_GV && kid->op_type != OP_RV2GV) { |
79072805 | 6984 | if (kid->op_type == OP_CONST && |
62c18ce2 GS |
6985 | (kid->op_private & OPpCONST_BARE)) |
6986 | { | |
0bd48802 | 6987 | OP * const newop = newGVOP(OP_GV, 0, |
f776e3cd | 6988 | gv_fetchsv(((SVOP*)kid)->op_sv, GV_ADD, SVt_PVIO)); |
afbdacea | 6989 | if (!(o->op_private & 1) && /* if not unop */ |
8a996ce8 | 6990 | kid == cLISTOPo->op_last) |
364daeac | 6991 | cLISTOPo->op_last = newop; |
eb8433b7 NC |
6992 | #ifdef PERL_MAD |
6993 | op_getmad(kid,newop,'K'); | |
6994 | #else | |
79072805 | 6995 | op_free(kid); |
eb8433b7 | 6996 | #endif |
79072805 LW |
6997 | kid = newop; |
6998 | } | |
1ea32a52 GS |
6999 | else if (kid->op_type == OP_READLINE) { |
7000 | /* neophyte patrol: open(<FH>), close(<FH>) etc. */ | |
53e06cf0 | 7001 | bad_type(numargs, "HANDLE", OP_DESC(o), kid); |
1ea32a52 | 7002 | } |
79072805 | 7003 | else { |
35cd451c | 7004 | I32 flags = OPf_SPECIAL; |
a6c40364 | 7005 | I32 priv = 0; |
2c8ac474 GS |
7006 | PADOFFSET targ = 0; |
7007 | ||
35cd451c | 7008 | /* is this op a FH constructor? */ |
853846ea | 7009 | if (is_handle_constructor(o,numargs)) { |
bd61b366 | 7010 | const char *name = NULL; |
dd2155a4 | 7011 | STRLEN len = 0; |
2c8ac474 GS |
7012 | |
7013 | flags = 0; | |
7014 | /* Set a flag to tell rv2gv to vivify | |
853846ea NIS |
7015 | * need to "prove" flag does not mean something |
7016 | * else already - NI-S 1999/05/07 | |
2c8ac474 GS |
7017 | */ |
7018 | priv = OPpDEREF; | |
7019 | if (kid->op_type == OP_PADSV) { | |
f8503592 NC |
7020 | SV *const namesv |
7021 | = PAD_COMPNAME_SV(kid->op_targ); | |
7022 | name = SvPV_const(namesv, len); | |
2c8ac474 GS |
7023 | } |
7024 | else if (kid->op_type == OP_RV2SV | |
7025 | && kUNOP->op_first->op_type == OP_GV) | |
7026 | { | |
0bd48802 | 7027 | GV * const gv = cGVOPx_gv(kUNOP->op_first); |
2c8ac474 GS |
7028 | name = GvNAME(gv); |
7029 | len = GvNAMELEN(gv); | |
7030 | } | |
afd1915d GS |
7031 | else if (kid->op_type == OP_AELEM |
7032 | || kid->op_type == OP_HELEM) | |
7033 | { | |
735fec84 | 7034 | OP *firstop; |
551405c4 | 7035 | OP *op = ((BINOP*)kid)->op_first; |
a4fc7abc | 7036 | name = NULL; |
551405c4 | 7037 | if (op) { |
a0714e2c | 7038 | SV *tmpstr = NULL; |
551405c4 | 7039 | const char * const a = |
666ea192 JH |
7040 | kid->op_type == OP_AELEM ? |
7041 | "[]" : "{}"; | |
0c4b0a3f JH |
7042 | if (((op->op_type == OP_RV2AV) || |
7043 | (op->op_type == OP_RV2HV)) && | |
735fec84 RGS |
7044 | (firstop = ((UNOP*)op)->op_first) && |
7045 | (firstop->op_type == OP_GV)) { | |
0c4b0a3f | 7046 | /* packagevar $a[] or $h{} */ |
735fec84 | 7047 | GV * const gv = cGVOPx_gv(firstop); |
0c4b0a3f JH |
7048 | if (gv) |
7049 | tmpstr = | |
7050 | Perl_newSVpvf(aTHX_ | |
7051 | "%s%c...%c", | |
7052 | GvNAME(gv), | |
7053 | a[0], a[1]); | |
7054 | } | |
7055 | else if (op->op_type == OP_PADAV | |
7056 | || op->op_type == OP_PADHV) { | |
7057 | /* lexicalvar $a[] or $h{} */ | |
551405c4 | 7058 | const char * const padname = |
0c4b0a3f JH |
7059 | PAD_COMPNAME_PV(op->op_targ); |
7060 | if (padname) | |
7061 | tmpstr = | |
7062 | Perl_newSVpvf(aTHX_ | |
7063 | "%s%c...%c", | |
7064 | padname + 1, | |
7065 | a[0], a[1]); | |
0c4b0a3f JH |
7066 | } |
7067 | if (tmpstr) { | |
93524f2b | 7068 | name = SvPV_const(tmpstr, len); |
0c4b0a3f JH |
7069 | sv_2mortal(tmpstr); |
7070 | } | |
7071 | } | |
7072 | if (!name) { | |
7073 | name = "__ANONIO__"; | |
7074 | len = 10; | |
7075 | } | |
7076 | mod(kid, type); | |
afd1915d | 7077 | } |
2c8ac474 GS |
7078 | if (name) { |
7079 | SV *namesv; | |
7080 | targ = pad_alloc(OP_RV2GV, SVs_PADTMP); | |
dd2155a4 | 7081 | namesv = PAD_SVl(targ); |
862a34c6 | 7082 | SvUPGRADE(namesv, SVt_PV); |
2c8ac474 | 7083 | if (*name != '$') |
76f68e9b | 7084 | sv_setpvs(namesv, "$"); |
2c8ac474 GS |
7085 | sv_catpvn(namesv, name, len); |
7086 | } | |
853846ea | 7087 | } |
79072805 | 7088 | kid->op_sibling = 0; |
35cd451c | 7089 | kid = newUNOP(OP_RV2GV, flags, scalar(kid)); |
2c8ac474 GS |
7090 | kid->op_targ = targ; |
7091 | kid->op_private |= priv; | |
79072805 LW |
7092 | } |
7093 | kid->op_sibling = sibl; | |
7094 | *tokid = kid; | |
7095 | } | |
7096 | scalar(kid); | |
7097 | break; | |
7098 | case OA_SCALARREF: | |
a0d0e21e | 7099 | mod(scalar(kid), type); |
79072805 LW |
7100 | break; |
7101 | } | |
7102 | oa >>= 4; | |
7103 | tokid = &kid->op_sibling; | |
7104 | kid = kid->op_sibling; | |
7105 | } | |
eb8433b7 NC |
7106 | #ifdef PERL_MAD |
7107 | if (kid && kid->op_type != OP_STUB) | |
7108 | return too_many_arguments(o,OP_DESC(o)); | |
7109 | o->op_private |= numargs; | |
7110 | #else | |
7111 | /* FIXME - should the numargs move as for the PERL_MAD case? */ | |
11343788 | 7112 | o->op_private |= numargs; |
79072805 | 7113 | if (kid) |
53e06cf0 | 7114 | return too_many_arguments(o,OP_DESC(o)); |
eb8433b7 | 7115 | #endif |
11343788 | 7116 | listkids(o); |
79072805 | 7117 | } |
22c35a8c | 7118 | else if (PL_opargs[type] & OA_DEFGV) { |
c56915e3 | 7119 | #ifdef PERL_MAD |
c7fe699d | 7120 | OP *newop = newUNOP(type, 0, newDEFSVOP()); |
c56915e3 | 7121 | op_getmad(o,newop,'O'); |
c7fe699d | 7122 | return newop; |
c56915e3 | 7123 | #else |
c7fe699d | 7124 | /* Ordering of these two is important to keep f_map.t passing. */ |
11343788 | 7125 | op_free(o); |
c7fe699d | 7126 | return newUNOP(type, 0, newDEFSVOP()); |
c56915e3 | 7127 | #endif |
a0d0e21e LW |
7128 | } |
7129 | ||
79072805 LW |
7130 | if (oa) { |
7131 | while (oa & OA_OPTIONAL) | |
7132 | oa >>= 4; | |
7133 | if (oa && oa != OA_LIST) | |
53e06cf0 | 7134 | return too_few_arguments(o,OP_DESC(o)); |
79072805 | 7135 | } |
11343788 | 7136 | return o; |
79072805 LW |
7137 | } |
7138 | ||
7139 | OP * | |
cea2e8a9 | 7140 | Perl_ck_glob(pTHX_ OP *o) |
79072805 | 7141 | { |
27da23d5 | 7142 | dVAR; |
fb73857a | 7143 | GV *gv; |
7144 | ||
7918f24d NC |
7145 | PERL_ARGS_ASSERT_CK_GLOB; |
7146 | ||
649da076 | 7147 | o = ck_fun(o); |
1f2bfc8a | 7148 | if ((o->op_flags & OPf_KIDS) && !cLISTOPo->op_first->op_sibling) |
54b9620d | 7149 | append_elem(OP_GLOB, o, newDEFSVOP()); |
fb73857a | 7150 | |
fafc274c | 7151 | if (!((gv = gv_fetchpvs("glob", GV_NOTQUAL, SVt_PVCV)) |
b9f751c0 GS |
7152 | && GvCVu(gv) && GvIMPORTED_CV(gv))) |
7153 | { | |
5c1737d1 | 7154 | gv = gv_fetchpvs("CORE::GLOBAL::glob", 0, SVt_PVCV); |
b9f751c0 | 7155 | } |
b1cb66bf | 7156 | |
52bb0670 | 7157 | #if !defined(PERL_EXTERNAL_GLOB) |
72b16652 | 7158 | /* XXX this can be tightened up and made more failsafe. */ |
f444d496 | 7159 | if (!(gv && GvCVu(gv) && GvIMPORTED_CV(gv))) { |
7d3fb230 | 7160 | GV *glob_gv; |
72b16652 | 7161 | ENTER; |
00ca71c1 | 7162 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, |
a0714e2c | 7163 | newSVpvs("File::Glob"), NULL, NULL, NULL); |
5c1737d1 NC |
7164 | gv = gv_fetchpvs("CORE::GLOBAL::glob", 0, SVt_PVCV); |
7165 | glob_gv = gv_fetchpvs("File::Glob::csh_glob", 0, SVt_PVCV); | |
7d3fb230 | 7166 | GvCV(gv) = GvCV(glob_gv); |
ad64d0ec | 7167 | SvREFCNT_inc_void(MUTABLE_SV(GvCV(gv))); |
7d3fb230 | 7168 | GvIMPORTED_CV_on(gv); |
72b16652 GS |
7169 | LEAVE; |
7170 | } | |
52bb0670 | 7171 | #endif /* PERL_EXTERNAL_GLOB */ |
72b16652 | 7172 | |
b9f751c0 | 7173 | if (gv && GvCVu(gv) && GvIMPORTED_CV(gv)) { |
5196be3e | 7174 | append_elem(OP_GLOB, o, |
80252599 | 7175 | newSVOP(OP_CONST, 0, newSViv(PL_glob_index++))); |
1f2bfc8a | 7176 | o->op_type = OP_LIST; |
22c35a8c | 7177 | o->op_ppaddr = PL_ppaddr[OP_LIST]; |
1f2bfc8a | 7178 | cLISTOPo->op_first->op_type = OP_PUSHMARK; |
22c35a8c | 7179 | cLISTOPo->op_first->op_ppaddr = PL_ppaddr[OP_PUSHMARK]; |
ad33f57d | 7180 | cLISTOPo->op_first->op_targ = 0; |
1f2bfc8a | 7181 | o = newUNOP(OP_ENTERSUB, OPf_STACKED, |
aeea060c | 7182 | append_elem(OP_LIST, o, |
1f2bfc8a MB |
7183 | scalar(newUNOP(OP_RV2CV, 0, |
7184 | newGVOP(OP_GV, 0, gv))))); | |
d58bf5aa MB |
7185 | o = newUNOP(OP_NULL, 0, ck_subr(o)); |
7186 | o->op_targ = OP_GLOB; /* hint at what it used to be */ | |
7187 | return o; | |
b1cb66bf | 7188 | } |
7189 | gv = newGVgen("main"); | |
a0d0e21e | 7190 | gv_IOadd(gv); |
11343788 MB |
7191 | append_elem(OP_GLOB, o, newGVOP(OP_GV, 0, gv)); |
7192 | scalarkids(o); | |
649da076 | 7193 | return o; |
79072805 LW |
7194 | } |
7195 | ||
7196 | OP * | |
cea2e8a9 | 7197 | Perl_ck_grep(pTHX_ OP *o) |
79072805 | 7198 | { |
27da23d5 | 7199 | dVAR; |
03ca120d | 7200 | LOGOP *gwop = NULL; |
79072805 | 7201 | OP *kid; |
6867be6d | 7202 | const OPCODE type = o->op_type == OP_GREPSTART ? OP_GREPWHILE : OP_MAPWHILE; |
9f7d9405 | 7203 | PADOFFSET offset; |
79072805 | 7204 | |
7918f24d NC |
7205 | PERL_ARGS_ASSERT_CK_GREP; |
7206 | ||
22c35a8c | 7207 | o->op_ppaddr = PL_ppaddr[OP_GREPSTART]; |
13765c85 | 7208 | /* don't allocate gwop here, as we may leak it if PL_parser->error_count > 0 */ |
aeea060c | 7209 | |
11343788 | 7210 | if (o->op_flags & OPf_STACKED) { |
a0d0e21e | 7211 | OP* k; |
11343788 | 7212 | o = ck_sort(o); |
f6435df3 GG |
7213 | kid = cUNOPx(cLISTOPo->op_first->op_sibling)->op_first; |
7214 | if (kid->op_type != OP_SCOPE && kid->op_type != OP_LEAVE) | |
7215 | return no_fh_allowed(o); | |
7216 | for (k = kid; k; k = k->op_next) { | |
a0d0e21e LW |
7217 | kid = k; |
7218 | } | |
03ca120d | 7219 | NewOp(1101, gwop, 1, LOGOP); |
a0d0e21e | 7220 | kid->op_next = (OP*)gwop; |
11343788 | 7221 | o->op_flags &= ~OPf_STACKED; |
93a17b20 | 7222 | } |
11343788 | 7223 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e LW |
7224 | if (type == OP_MAPWHILE) |
7225 | list(kid); | |
7226 | else | |
7227 | scalar(kid); | |
11343788 | 7228 | o = ck_fun(o); |
13765c85 | 7229 | if (PL_parser && PL_parser->error_count) |
11343788 | 7230 | return o; |
aeea060c | 7231 | kid = cLISTOPo->op_first->op_sibling; |
79072805 | 7232 | if (kid->op_type != OP_NULL) |
cea2e8a9 | 7233 | Perl_croak(aTHX_ "panic: ck_grep"); |
79072805 LW |
7234 | kid = kUNOP->op_first; |
7235 | ||
03ca120d MHM |
7236 | if (!gwop) |
7237 | NewOp(1101, gwop, 1, LOGOP); | |
a0d0e21e | 7238 | gwop->op_type = type; |
22c35a8c | 7239 | gwop->op_ppaddr = PL_ppaddr[type]; |
11343788 | 7240 | gwop->op_first = listkids(o); |
79072805 | 7241 | gwop->op_flags |= OPf_KIDS; |
79072805 | 7242 | gwop->op_other = LINKLIST(kid); |
79072805 | 7243 | kid->op_next = (OP*)gwop; |
f8f98e0a | 7244 | offset = Perl_pad_findmy(aTHX_ STR_WITH_LEN("$_"), 0); |
00b1698f | 7245 | if (offset == NOT_IN_PAD || PAD_COMPNAME_FLAGS_isOUR(offset)) { |
59f00321 RGS |
7246 | o->op_private = gwop->op_private = 0; |
7247 | gwop->op_targ = pad_alloc(type, SVs_PADTMP); | |
7248 | } | |
7249 | else { | |
7250 | o->op_private = gwop->op_private = OPpGREP_LEX; | |
7251 | gwop->op_targ = o->op_targ = offset; | |
7252 | } | |
79072805 | 7253 | |
11343788 | 7254 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e | 7255 | if (!kid || !kid->op_sibling) |
53e06cf0 | 7256 | return too_few_arguments(o,OP_DESC(o)); |
a0d0e21e LW |
7257 | for (kid = kid->op_sibling; kid; kid = kid->op_sibling) |
7258 | mod(kid, OP_GREPSTART); | |
7259 | ||
79072805 LW |
7260 | return (OP*)gwop; |
7261 | } | |
7262 | ||
7263 | OP * | |
cea2e8a9 | 7264 | Perl_ck_index(pTHX_ OP *o) |
79072805 | 7265 | { |
7918f24d NC |
7266 | PERL_ARGS_ASSERT_CK_INDEX; |
7267 | ||
11343788 MB |
7268 | if (o->op_flags & OPf_KIDS) { |
7269 | OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
0b71040e LW |
7270 | if (kid) |
7271 | kid = kid->op_sibling; /* get past "big" */ | |
79072805 | 7272 | if (kid && kid->op_type == OP_CONST) |
2779dcf1 | 7273 | fbm_compile(((SVOP*)kid)->op_sv, 0); |
79072805 | 7274 | } |
11343788 | 7275 | return ck_fun(o); |
79072805 LW |
7276 | } |
7277 | ||
7278 | OP * | |
cea2e8a9 | 7279 | Perl_ck_lfun(pTHX_ OP *o) |
79072805 | 7280 | { |
6867be6d | 7281 | const OPCODE type = o->op_type; |
7918f24d NC |
7282 | |
7283 | PERL_ARGS_ASSERT_CK_LFUN; | |
7284 | ||
5dc0d613 | 7285 | return modkids(ck_fun(o), type); |
79072805 LW |
7286 | } |
7287 | ||
7288 | OP * | |
cea2e8a9 | 7289 | Perl_ck_defined(pTHX_ OP *o) /* 19990527 MJD */ |
69794302 | 7290 | { |
7918f24d NC |
7291 | PERL_ARGS_ASSERT_CK_DEFINED; |
7292 | ||
a2a5de95 | 7293 | if ((o->op_flags & OPf_KIDS)) { |
d0334bed GS |
7294 | switch (cUNOPo->op_first->op_type) { |
7295 | case OP_RV2AV: | |
a8739d98 JH |
7296 | /* This is needed for |
7297 | if (defined %stash::) | |
7298 | to work. Do not break Tk. | |
7299 | */ | |
1c846c1f | 7300 | break; /* Globals via GV can be undef */ |
d0334bed GS |
7301 | case OP_PADAV: |
7302 | case OP_AASSIGN: /* Is this a good idea? */ | |
d1d15184 | 7303 | Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED), |
a2a5de95 | 7304 | "defined(@array) is deprecated"); |
d1d15184 | 7305 | Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED), |
a2a5de95 | 7306 | "\t(Maybe you should just omit the defined()?)\n"); |
69794302 | 7307 | break; |
d0334bed GS |
7308 | case OP_RV2HV: |
7309 | case OP_PADHV: | |
d1d15184 | 7310 | Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED), |
a2a5de95 | 7311 | "defined(%%hash) is deprecated"); |
d1d15184 | 7312 | Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED), |
a2a5de95 | 7313 | "\t(Maybe you should just omit the defined()?)\n"); |
d0334bed GS |
7314 | break; |
7315 | default: | |
7316 | /* no warning */ | |
7317 | break; | |
7318 | } | |
69794302 MJD |
7319 | } |
7320 | return ck_rfun(o); | |
7321 | } | |
7322 | ||
7323 | OP * | |
e4b7ebf3 RGS |
7324 | Perl_ck_readline(pTHX_ OP *o) |
7325 | { | |
7918f24d NC |
7326 | PERL_ARGS_ASSERT_CK_READLINE; |
7327 | ||
e4b7ebf3 RGS |
7328 | if (!(o->op_flags & OPf_KIDS)) { |
7329 | OP * const newop | |
7330 | = newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, PL_argvgv)); | |
7331 | #ifdef PERL_MAD | |
7332 | op_getmad(o,newop,'O'); | |
7333 | #else | |
7334 | op_free(o); | |
7335 | #endif | |
7336 | return newop; | |
7337 | } | |
7338 | return o; | |
7339 | } | |
7340 | ||
7341 | OP * | |
cea2e8a9 | 7342 | Perl_ck_rfun(pTHX_ OP *o) |
8990e307 | 7343 | { |
6867be6d | 7344 | const OPCODE type = o->op_type; |
7918f24d NC |
7345 | |
7346 | PERL_ARGS_ASSERT_CK_RFUN; | |
7347 | ||
5dc0d613 | 7348 | return refkids(ck_fun(o), type); |
8990e307 LW |
7349 | } |
7350 | ||
7351 | OP * | |
cea2e8a9 | 7352 | Perl_ck_listiob(pTHX_ OP *o) |
79072805 LW |
7353 | { |
7354 | register OP *kid; | |
aeea060c | 7355 | |
7918f24d NC |
7356 | PERL_ARGS_ASSERT_CK_LISTIOB; |
7357 | ||
11343788 | 7358 | kid = cLISTOPo->op_first; |
79072805 | 7359 | if (!kid) { |
11343788 MB |
7360 | o = force_list(o); |
7361 | kid = cLISTOPo->op_first; | |
79072805 LW |
7362 | } |
7363 | if (kid->op_type == OP_PUSHMARK) | |
7364 | kid = kid->op_sibling; | |
11343788 | 7365 | if (kid && o->op_flags & OPf_STACKED) |
79072805 LW |
7366 | kid = kid->op_sibling; |
7367 | else if (kid && !kid->op_sibling) { /* print HANDLE; */ | |
7368 | if (kid->op_type == OP_CONST && kid->op_private & OPpCONST_BARE) { | |
11343788 | 7369 | o->op_flags |= OPf_STACKED; /* make it a filehandle */ |
748a9306 | 7370 | kid = newUNOP(OP_RV2GV, OPf_REF, scalar(kid)); |
11343788 MB |
7371 | cLISTOPo->op_first->op_sibling = kid; |
7372 | cLISTOPo->op_last = kid; | |
79072805 LW |
7373 | kid = kid->op_sibling; |
7374 | } | |
7375 | } | |
b2ffa427 | 7376 | |
79072805 | 7377 | if (!kid) |
54b9620d | 7378 | append_elem(o->op_type, o, newDEFSVOP()); |
79072805 | 7379 | |
2de3dbcc | 7380 | return listkids(o); |
bbce6d69 | 7381 | } |
7382 | ||
7383 | OP * | |
0d863452 RH |
7384 | Perl_ck_smartmatch(pTHX_ OP *o) |
7385 | { | |
97aff369 | 7386 | dVAR; |
0d863452 RH |
7387 | if (0 == (o->op_flags & OPf_SPECIAL)) { |
7388 | OP *first = cBINOPo->op_first; | |
7389 | OP *second = first->op_sibling; | |
7390 | ||
7391 | /* Implicitly take a reference to an array or hash */ | |
5f66b61c | 7392 | first->op_sibling = NULL; |
0d863452 RH |
7393 | first = cBINOPo->op_first = ref_array_or_hash(first); |
7394 | second = first->op_sibling = ref_array_or_hash(second); | |
7395 | ||
7396 | /* Implicitly take a reference to a regular expression */ | |
7397 | if (first->op_type == OP_MATCH) { | |
7398 | first->op_type = OP_QR; | |
7399 | first->op_ppaddr = PL_ppaddr[OP_QR]; | |
7400 | } | |
7401 | if (second->op_type == OP_MATCH) { | |
7402 | second->op_type = OP_QR; | |
7403 | second->op_ppaddr = PL_ppaddr[OP_QR]; | |
7404 | } | |
7405 | } | |
7406 | ||
7407 | return o; | |
7408 | } | |
7409 | ||
7410 | ||
7411 | OP * | |
b162f9ea IZ |
7412 | Perl_ck_sassign(pTHX_ OP *o) |
7413 | { | |
3088bf26 | 7414 | dVAR; |
1496a290 | 7415 | OP * const kid = cLISTOPo->op_first; |
7918f24d NC |
7416 | |
7417 | PERL_ARGS_ASSERT_CK_SASSIGN; | |
7418 | ||
b162f9ea IZ |
7419 | /* has a disposable target? */ |
7420 | if ((PL_opargs[kid->op_type] & OA_TARGLEX) | |
6b66af17 GS |
7421 | && !(kid->op_flags & OPf_STACKED) |
7422 | /* Cannot steal the second time! */ | |
1b438339 GG |
7423 | && !(kid->op_private & OPpTARGET_MY) |
7424 | /* Keep the full thing for madskills */ | |
7425 | && !PL_madskills | |
7426 | ) | |
b162f9ea | 7427 | { |
551405c4 | 7428 | OP * const kkid = kid->op_sibling; |
b162f9ea IZ |
7429 | |
7430 | /* Can just relocate the target. */ | |
2c2d71f5 JH |
7431 | if (kkid && kkid->op_type == OP_PADSV |
7432 | && !(kkid->op_private & OPpLVAL_INTRO)) | |
7433 | { | |
b162f9ea | 7434 | kid->op_targ = kkid->op_targ; |
743e66e6 | 7435 | kkid->op_targ = 0; |
b162f9ea IZ |
7436 | /* Now we do not need PADSV and SASSIGN. */ |
7437 | kid->op_sibling = o->op_sibling; /* NULL */ | |
7438 | cLISTOPo->op_first = NULL; | |
7439 | op_free(o); | |
7440 | op_free(kkid); | |
7441 | kid->op_private |= OPpTARGET_MY; /* Used for context settings */ | |
7442 | return kid; | |
7443 | } | |
7444 | } | |
c5917253 NC |
7445 | if (kid->op_sibling) { |
7446 | OP *kkid = kid->op_sibling; | |
7447 | if (kkid->op_type == OP_PADSV | |
7448 | && (kkid->op_private & OPpLVAL_INTRO) | |
7449 | && SvPAD_STATE(*av_fetch(PL_comppad_name, kkid->op_targ, FALSE))) { | |
7450 | const PADOFFSET target = kkid->op_targ; | |
7451 | OP *const other = newOP(OP_PADSV, | |
7452 | kkid->op_flags | |
7453 | | ((kkid->op_private & ~OPpLVAL_INTRO) << 8)); | |
7454 | OP *const first = newOP(OP_NULL, 0); | |
7455 | OP *const nullop = newCONDOP(0, first, o, other); | |
7456 | OP *const condop = first->op_next; | |
7457 | /* hijacking PADSTALE for uninitialized state variables */ | |
7458 | SvPADSTALE_on(PAD_SVl(target)); | |
7459 | ||
7460 | condop->op_type = OP_ONCE; | |
7461 | condop->op_ppaddr = PL_ppaddr[OP_ONCE]; | |
7462 | condop->op_targ = target; | |
7463 | other->op_targ = target; | |
7464 | ||
95562366 NC |
7465 | /* Because we change the type of the op here, we will skip the |
7466 | assinment binop->op_last = binop->op_first->op_sibling; at the | |
7467 | end of Perl_newBINOP(). So need to do it here. */ | |
7468 | cBINOPo->op_last = cBINOPo->op_first->op_sibling; | |
7469 | ||
c5917253 NC |
7470 | return nullop; |
7471 | } | |
7472 | } | |
b162f9ea IZ |
7473 | return o; |
7474 | } | |
7475 | ||
7476 | OP * | |
cea2e8a9 | 7477 | Perl_ck_match(pTHX_ OP *o) |
79072805 | 7478 | { |
97aff369 | 7479 | dVAR; |
7918f24d NC |
7480 | |
7481 | PERL_ARGS_ASSERT_CK_MATCH; | |
7482 | ||
0d863452 | 7483 | if (o->op_type != OP_QR && PL_compcv) { |
f8f98e0a | 7484 | const PADOFFSET offset = Perl_pad_findmy(aTHX_ STR_WITH_LEN("$_"), 0); |
00b1698f | 7485 | if (offset != NOT_IN_PAD && !(PAD_COMPNAME_FLAGS_isOUR(offset))) { |
59f00321 RGS |
7486 | o->op_targ = offset; |
7487 | o->op_private |= OPpTARGET_MY; | |
7488 | } | |
7489 | } | |
7490 | if (o->op_type == OP_MATCH || o->op_type == OP_QR) | |
7491 | o->op_private |= OPpRUNTIME; | |
11343788 | 7492 | return o; |
79072805 LW |
7493 | } |
7494 | ||
7495 | OP * | |
f5d5a27c CS |
7496 | Perl_ck_method(pTHX_ OP *o) |
7497 | { | |
551405c4 | 7498 | OP * const kid = cUNOPo->op_first; |
7918f24d NC |
7499 | |
7500 | PERL_ARGS_ASSERT_CK_METHOD; | |
7501 | ||
f5d5a27c CS |
7502 | if (kid->op_type == OP_CONST) { |
7503 | SV* sv = kSVOP->op_sv; | |
a4fc7abc AL |
7504 | const char * const method = SvPVX_const(sv); |
7505 | if (!(strchr(method, ':') || strchr(method, '\''))) { | |
f5d5a27c | 7506 | OP *cmop; |
1c846c1f | 7507 | if (!SvREADONLY(sv) || !SvFAKE(sv)) { |
a4fc7abc | 7508 | sv = newSVpvn_share(method, SvCUR(sv), 0); |
1c846c1f NIS |
7509 | } |
7510 | else { | |
a0714e2c | 7511 | kSVOP->op_sv = NULL; |
1c846c1f | 7512 | } |
f5d5a27c | 7513 | cmop = newSVOP(OP_METHOD_NAMED, 0, sv); |
eb8433b7 NC |
7514 | #ifdef PERL_MAD |
7515 | op_getmad(o,cmop,'O'); | |
7516 | #else | |
f5d5a27c | 7517 | op_free(o); |
eb8433b7 | 7518 | #endif |
f5d5a27c CS |
7519 | return cmop; |
7520 | } | |
7521 | } | |
7522 | return o; | |
7523 | } | |
7524 | ||
7525 | OP * | |
cea2e8a9 | 7526 | Perl_ck_null(pTHX_ OP *o) |
79072805 | 7527 | { |
7918f24d | 7528 | PERL_ARGS_ASSERT_CK_NULL; |
96a5add6 | 7529 | PERL_UNUSED_CONTEXT; |
11343788 | 7530 | return o; |
79072805 LW |
7531 | } |
7532 | ||
7533 | OP * | |
16fe6d59 GS |
7534 | Perl_ck_open(pTHX_ OP *o) |
7535 | { | |
97aff369 | 7536 | dVAR; |
551405c4 | 7537 | HV * const table = GvHV(PL_hintgv); |
7918f24d NC |
7538 | |
7539 | PERL_ARGS_ASSERT_CK_OPEN; | |
7540 | ||
16fe6d59 | 7541 | if (table) { |
a4fc7abc | 7542 | SV **svp = hv_fetchs(table, "open_IN", FALSE); |
16fe6d59 | 7543 | if (svp && *svp) { |
a79b25b7 VP |
7544 | STRLEN len = 0; |
7545 | const char *d = SvPV_const(*svp, len); | |
7546 | const I32 mode = mode_from_discipline(d, len); | |
16fe6d59 GS |
7547 | if (mode & O_BINARY) |
7548 | o->op_private |= OPpOPEN_IN_RAW; | |
7549 | else if (mode & O_TEXT) | |
7550 | o->op_private |= OPpOPEN_IN_CRLF; | |
7551 | } | |
7552 | ||
a4fc7abc | 7553 | svp = hv_fetchs(table, "open_OUT", FALSE); |
16fe6d59 | 7554 | if (svp && *svp) { |
a79b25b7 VP |
7555 | STRLEN len = 0; |
7556 | const char *d = SvPV_const(*svp, len); | |
7557 | const I32 mode = mode_from_discipline(d, len); | |
16fe6d59 GS |
7558 | if (mode & O_BINARY) |
7559 | o->op_private |= OPpOPEN_OUT_RAW; | |
7560 | else if (mode & O_TEXT) | |
7561 | o->op_private |= OPpOPEN_OUT_CRLF; | |
7562 | } | |
7563 | } | |
8d7403e6 RGS |
7564 | if (o->op_type == OP_BACKTICK) { |
7565 | if (!(o->op_flags & OPf_KIDS)) { | |
e4b7ebf3 RGS |
7566 | OP * const newop = newUNOP(OP_BACKTICK, 0, newDEFSVOP()); |
7567 | #ifdef PERL_MAD | |
7568 | op_getmad(o,newop,'O'); | |
7569 | #else | |
8d7403e6 | 7570 | op_free(o); |
e4b7ebf3 RGS |
7571 | #endif |
7572 | return newop; | |
8d7403e6 | 7573 | } |
16fe6d59 | 7574 | return o; |
8d7403e6 | 7575 | } |
3b82e551 JH |
7576 | { |
7577 | /* In case of three-arg dup open remove strictness | |
7578 | * from the last arg if it is a bareword. */ | |
551405c4 AL |
7579 | OP * const first = cLISTOPx(o)->op_first; /* The pushmark. */ |
7580 | OP * const last = cLISTOPx(o)->op_last; /* The bareword. */ | |
3b82e551 | 7581 | OP *oa; |
b15aece3 | 7582 | const char *mode; |
3b82e551 JH |
7583 | |
7584 | if ((last->op_type == OP_CONST) && /* The bareword. */ | |
7585 | (last->op_private & OPpCONST_BARE) && | |
7586 | (last->op_private & OPpCONST_STRICT) && | |
7587 | (oa = first->op_sibling) && /* The fh. */ | |
7588 | (oa = oa->op_sibling) && /* The mode. */ | |
ea1d064a | 7589 | (oa->op_type == OP_CONST) && |
3b82e551 | 7590 | SvPOK(((SVOP*)oa)->op_sv) && |
b15aece3 | 7591 | (mode = SvPVX_const(((SVOP*)oa)->op_sv)) && |
3b82e551 JH |
7592 | mode[0] == '>' && mode[1] == '&' && /* A dup open. */ |
7593 | (last == oa->op_sibling)) /* The bareword. */ | |
7594 | last->op_private &= ~OPpCONST_STRICT; | |
7595 | } | |
16fe6d59 GS |
7596 | return ck_fun(o); |
7597 | } | |
7598 | ||
7599 | OP * | |
cea2e8a9 | 7600 | Perl_ck_repeat(pTHX_ OP *o) |
79072805 | 7601 | { |
7918f24d NC |
7602 | PERL_ARGS_ASSERT_CK_REPEAT; |
7603 | ||
11343788 MB |
7604 | if (cBINOPo->op_first->op_flags & OPf_PARENS) { |
7605 | o->op_private |= OPpREPEAT_DOLIST; | |
7606 | cBINOPo->op_first = force_list(cBINOPo->op_first); | |
79072805 LW |
7607 | } |
7608 | else | |
11343788 MB |
7609 | scalar(o); |
7610 | return o; | |
79072805 LW |
7611 | } |
7612 | ||
7613 | OP * | |
cea2e8a9 | 7614 | Perl_ck_require(pTHX_ OP *o) |
8990e307 | 7615 | { |
97aff369 | 7616 | dVAR; |
a0714e2c | 7617 | GV* gv = NULL; |
ec4ab249 | 7618 | |
7918f24d NC |
7619 | PERL_ARGS_ASSERT_CK_REQUIRE; |
7620 | ||
11343788 | 7621 | if (o->op_flags & OPf_KIDS) { /* Shall we supply missing .pm? */ |
551405c4 | 7622 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
8990e307 LW |
7623 | |
7624 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
551405c4 | 7625 | SV * const sv = kid->op_sv; |
5c144d81 | 7626 | U32 was_readonly = SvREADONLY(sv); |
8990e307 | 7627 | char *s; |
cfff9797 NC |
7628 | STRLEN len; |
7629 | const char *end; | |
5c144d81 NC |
7630 | |
7631 | if (was_readonly) { | |
7632 | if (SvFAKE(sv)) { | |
7633 | sv_force_normal_flags(sv, 0); | |
7634 | assert(!SvREADONLY(sv)); | |
7635 | was_readonly = 0; | |
7636 | } else { | |
7637 | SvREADONLY_off(sv); | |
7638 | } | |
7639 | } | |
7640 | ||
cfff9797 NC |
7641 | s = SvPVX(sv); |
7642 | len = SvCUR(sv); | |
7643 | end = s + len; | |
7644 | for (; s < end; s++) { | |
a0d0e21e LW |
7645 | if (*s == ':' && s[1] == ':') { |
7646 | *s = '/'; | |
5c6b2528 | 7647 | Move(s+2, s+1, end - s - 1, char); |
cfff9797 | 7648 | --end; |
a0d0e21e | 7649 | } |
8990e307 | 7650 | } |
cfff9797 | 7651 | SvEND_set(sv, end); |
396482e1 | 7652 | sv_catpvs(sv, ".pm"); |
5c144d81 | 7653 | SvFLAGS(sv) |= was_readonly; |
8990e307 LW |
7654 | } |
7655 | } | |
ec4ab249 | 7656 | |
a72a1c8b RGS |
7657 | if (!(o->op_flags & OPf_SPECIAL)) { /* Wasn't written as CORE::require */ |
7658 | /* handle override, if any */ | |
fafc274c | 7659 | gv = gv_fetchpvs("require", GV_NOTQUAL, SVt_PVCV); |
d6a985f2 | 7660 | if (!(gv && GvCVu(gv) && GvIMPORTED_CV(gv))) { |
a4fc7abc | 7661 | GV * const * const gvp = (GV**)hv_fetchs(PL_globalstash, "require", FALSE); |
a0714e2c | 7662 | gv = gvp ? *gvp : NULL; |
d6a985f2 | 7663 | } |
a72a1c8b | 7664 | } |
ec4ab249 | 7665 | |
b9f751c0 | 7666 | if (gv && GvCVu(gv) && GvIMPORTED_CV(gv)) { |
551405c4 | 7667 | OP * const kid = cUNOPo->op_first; |
f11453cb NC |
7668 | OP * newop; |
7669 | ||
ec4ab249 | 7670 | cUNOPo->op_first = 0; |
f11453cb | 7671 | #ifndef PERL_MAD |
ec4ab249 | 7672 | op_free(o); |
eb8433b7 | 7673 | #endif |
f11453cb NC |
7674 | newop = ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, |
7675 | append_elem(OP_LIST, kid, | |
7676 | scalar(newUNOP(OP_RV2CV, 0, | |
7677 | newGVOP(OP_GV, 0, | |
7678 | gv)))))); | |
7679 | op_getmad(o,newop,'O'); | |
eb8433b7 | 7680 | return newop; |
ec4ab249 GA |
7681 | } |
7682 | ||
021f53de | 7683 | return scalar(ck_fun(o)); |
8990e307 LW |
7684 | } |
7685 | ||
78f9721b SM |
7686 | OP * |
7687 | Perl_ck_return(pTHX_ OP *o) | |
7688 | { | |
97aff369 | 7689 | dVAR; |
e91684bf | 7690 | OP *kid; |
7918f24d NC |
7691 | |
7692 | PERL_ARGS_ASSERT_CK_RETURN; | |
7693 | ||
e91684bf | 7694 | kid = cLISTOPo->op_first->op_sibling; |
78f9721b | 7695 | if (CvLVALUE(PL_compcv)) { |
e91684bf | 7696 | for (; kid; kid = kid->op_sibling) |
78f9721b | 7697 | mod(kid, OP_LEAVESUBLV); |
e91684bf VP |
7698 | } else { |
7699 | for (; kid; kid = kid->op_sibling) | |
7700 | if ((kid->op_type == OP_NULL) | |
1c8a4223 | 7701 | && ((kid->op_flags & (OPf_SPECIAL|OPf_KIDS)) == (OPf_SPECIAL|OPf_KIDS))) { |
e91684bf | 7702 | /* This is a do block */ |
1c8a4223 VP |
7703 | OP *op = kUNOP->op_first; |
7704 | if (op->op_type == OP_LEAVE && op->op_flags & OPf_KIDS) { | |
7705 | op = cUNOPx(op)->op_first; | |
7706 | assert(op->op_type == OP_ENTER && !(op->op_flags & OPf_SPECIAL)); | |
7707 | /* Force the use of the caller's context */ | |
7708 | op->op_flags |= OPf_SPECIAL; | |
7709 | } | |
e91684bf | 7710 | } |
78f9721b | 7711 | } |
e91684bf | 7712 | |
78f9721b SM |
7713 | return o; |
7714 | } | |
7715 | ||
79072805 | 7716 | OP * |
cea2e8a9 | 7717 | Perl_ck_select(pTHX_ OP *o) |
79072805 | 7718 | { |
27da23d5 | 7719 | dVAR; |
c07a80fd | 7720 | OP* kid; |
7918f24d NC |
7721 | |
7722 | PERL_ARGS_ASSERT_CK_SELECT; | |
7723 | ||
11343788 MB |
7724 | if (o->op_flags & OPf_KIDS) { |
7725 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
2304df62 | 7726 | if (kid && kid->op_sibling) { |
11343788 | 7727 | o->op_type = OP_SSELECT; |
22c35a8c | 7728 | o->op_ppaddr = PL_ppaddr[OP_SSELECT]; |
11343788 MB |
7729 | o = ck_fun(o); |
7730 | return fold_constants(o); | |
79072805 LW |
7731 | } |
7732 | } | |
11343788 MB |
7733 | o = ck_fun(o); |
7734 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
c07a80fd | 7735 | if (kid && kid->op_type == OP_RV2GV) |
7736 | kid->op_private &= ~HINT_STRICT_REFS; | |
11343788 | 7737 | return o; |
79072805 LW |
7738 | } |
7739 | ||
7740 | OP * | |
cea2e8a9 | 7741 | Perl_ck_shift(pTHX_ OP *o) |
79072805 | 7742 | { |
97aff369 | 7743 | dVAR; |
6867be6d | 7744 | const I32 type = o->op_type; |
79072805 | 7745 | |
7918f24d NC |
7746 | PERL_ARGS_ASSERT_CK_SHIFT; |
7747 | ||
11343788 | 7748 | if (!(o->op_flags & OPf_KIDS)) { |
538f5756 RZ |
7749 | OP *argop; |
7750 | ||
7751 | if (!CvUNIQUE(PL_compcv)) { | |
7752 | o->op_flags |= OPf_SPECIAL; | |
7753 | return o; | |
7754 | } | |
7755 | ||
7756 | argop = newUNOP(OP_RV2AV, 0, scalar(newGVOP(OP_GV, 0, PL_argvgv))); | |
eb8433b7 | 7757 | #ifdef PERL_MAD |
821005df | 7758 | OP * const oldo = o; |
eb8433b7 NC |
7759 | o = newUNOP(type, 0, scalar(argop)); |
7760 | op_getmad(oldo,o,'O'); | |
7761 | return o; | |
7762 | #else | |
821005df | 7763 | op_free(o); |
6d4ff0d2 | 7764 | return newUNOP(type, 0, scalar(argop)); |
eb8433b7 | 7765 | #endif |
79072805 | 7766 | } |
11343788 | 7767 | return scalar(modkids(ck_fun(o), type)); |
79072805 LW |
7768 | } |
7769 | ||
7770 | OP * | |
cea2e8a9 | 7771 | Perl_ck_sort(pTHX_ OP *o) |
79072805 | 7772 | { |
97aff369 | 7773 | dVAR; |
8e3f9bdf | 7774 | OP *firstkid; |
bbce6d69 | 7775 | |
7918f24d NC |
7776 | PERL_ARGS_ASSERT_CK_SORT; |
7777 | ||
1496a290 | 7778 | if (o->op_type == OP_SORT && (PL_hints & HINT_LOCALIZE_HH) != 0) { |
a4fc7abc | 7779 | HV * const hinthv = GvHV(PL_hintgv); |
7b9ef140 | 7780 | if (hinthv) { |
a4fc7abc | 7781 | SV ** const svp = hv_fetchs(hinthv, "sort", FALSE); |
7b9ef140 | 7782 | if (svp) { |
a4fc7abc | 7783 | const I32 sorthints = (I32)SvIV(*svp); |
7b9ef140 RH |
7784 | if ((sorthints & HINT_SORT_QUICKSORT) != 0) |
7785 | o->op_private |= OPpSORT_QSORT; | |
7786 | if ((sorthints & HINT_SORT_STABLE) != 0) | |
7787 | o->op_private |= OPpSORT_STABLE; | |
7788 | } | |
7789 | } | |
7790 | } | |
7791 | ||
9ea6e965 | 7792 | if (o->op_type == OP_SORT && o->op_flags & OPf_STACKED) |
51a19bc0 | 7793 | simplify_sort(o); |
8e3f9bdf GS |
7794 | firstkid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
7795 | if (o->op_flags & OPf_STACKED) { /* may have been cleared */ | |
9c5ffd7c | 7796 | OP *k = NULL; |
8e3f9bdf | 7797 | OP *kid = cUNOPx(firstkid)->op_first; /* get past null */ |
79072805 | 7798 | |
463ee0b2 | 7799 | if (kid->op_type == OP_SCOPE || kid->op_type == OP_LEAVE) { |
79072805 | 7800 | linklist(kid); |
463ee0b2 LW |
7801 | if (kid->op_type == OP_SCOPE) { |
7802 | k = kid->op_next; | |
7803 | kid->op_next = 0; | |
79072805 | 7804 | } |
463ee0b2 | 7805 | else if (kid->op_type == OP_LEAVE) { |
11343788 | 7806 | if (o->op_type == OP_SORT) { |
93c66552 | 7807 | op_null(kid); /* wipe out leave */ |
748a9306 | 7808 | kid->op_next = kid; |
463ee0b2 | 7809 | |
748a9306 LW |
7810 | for (k = kLISTOP->op_first->op_next; k; k = k->op_next) { |
7811 | if (k->op_next == kid) | |
7812 | k->op_next = 0; | |
71a29c3c GS |
7813 | /* don't descend into loops */ |
7814 | else if (k->op_type == OP_ENTERLOOP | |
7815 | || k->op_type == OP_ENTERITER) | |
7816 | { | |
7817 | k = cLOOPx(k)->op_lastop; | |
7818 | } | |
748a9306 | 7819 | } |
463ee0b2 | 7820 | } |
748a9306 LW |
7821 | else |
7822 | kid->op_next = 0; /* just disconnect the leave */ | |
a0d0e21e | 7823 | k = kLISTOP->op_first; |
463ee0b2 | 7824 | } |
a2efc822 | 7825 | CALL_PEEP(k); |
a0d0e21e | 7826 | |
8e3f9bdf GS |
7827 | kid = firstkid; |
7828 | if (o->op_type == OP_SORT) { | |
7829 | /* provide scalar context for comparison function/block */ | |
7830 | kid = scalar(kid); | |
a0d0e21e | 7831 | kid->op_next = kid; |
8e3f9bdf | 7832 | } |
a0d0e21e LW |
7833 | else |
7834 | kid->op_next = k; | |
11343788 | 7835 | o->op_flags |= OPf_SPECIAL; |
79072805 | 7836 | } |
c6e96bcb | 7837 | else if (kid->op_type == OP_RV2SV || kid->op_type == OP_PADSV) |
93c66552 | 7838 | op_null(firstkid); |
8e3f9bdf GS |
7839 | |
7840 | firstkid = firstkid->op_sibling; | |
79072805 | 7841 | } |
bbce6d69 | 7842 | |
8e3f9bdf GS |
7843 | /* provide list context for arguments */ |
7844 | if (o->op_type == OP_SORT) | |
7845 | list(firstkid); | |
7846 | ||
11343788 | 7847 | return o; |
79072805 | 7848 | } |
bda4119b GS |
7849 | |
7850 | STATIC void | |
cea2e8a9 | 7851 | S_simplify_sort(pTHX_ OP *o) |
9c007264 | 7852 | { |
97aff369 | 7853 | dVAR; |
9c007264 JH |
7854 | register OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
7855 | OP *k; | |
eb209983 | 7856 | int descending; |
350de78d | 7857 | GV *gv; |
770526c1 | 7858 | const char *gvname; |
7918f24d NC |
7859 | |
7860 | PERL_ARGS_ASSERT_SIMPLIFY_SORT; | |
7861 | ||
9c007264 JH |
7862 | if (!(o->op_flags & OPf_STACKED)) |
7863 | return; | |
fafc274c NC |
7864 | GvMULTI_on(gv_fetchpvs("a", GV_ADD|GV_NOTQUAL, SVt_PV)); |
7865 | GvMULTI_on(gv_fetchpvs("b", GV_ADD|GV_NOTQUAL, SVt_PV)); | |
82092f1d | 7866 | kid = kUNOP->op_first; /* get past null */ |
9c007264 JH |
7867 | if (kid->op_type != OP_SCOPE) |
7868 | return; | |
7869 | kid = kLISTOP->op_last; /* get past scope */ | |
7870 | switch(kid->op_type) { | |
7871 | case OP_NCMP: | |
7872 | case OP_I_NCMP: | |
7873 | case OP_SCMP: | |
7874 | break; | |
7875 | default: | |
7876 | return; | |
7877 | } | |
7878 | k = kid; /* remember this node*/ | |
7879 | if (kBINOP->op_first->op_type != OP_RV2SV) | |
7880 | return; | |
7881 | kid = kBINOP->op_first; /* get past cmp */ | |
7882 | if (kUNOP->op_first->op_type != OP_GV) | |
7883 | return; | |
7884 | kid = kUNOP->op_first; /* get past rv2sv */ | |
638eceb6 | 7885 | gv = kGVOP_gv; |
350de78d | 7886 | if (GvSTASH(gv) != PL_curstash) |
9c007264 | 7887 | return; |
770526c1 NC |
7888 | gvname = GvNAME(gv); |
7889 | if (*gvname == 'a' && gvname[1] == '\0') | |
eb209983 | 7890 | descending = 0; |
770526c1 | 7891 | else if (*gvname == 'b' && gvname[1] == '\0') |
eb209983 | 7892 | descending = 1; |
9c007264 JH |
7893 | else |
7894 | return; | |
eb209983 | 7895 | |
9c007264 JH |
7896 | kid = k; /* back to cmp */ |
7897 | if (kBINOP->op_last->op_type != OP_RV2SV) | |
7898 | return; | |
7899 | kid = kBINOP->op_last; /* down to 2nd arg */ | |
7900 | if (kUNOP->op_first->op_type != OP_GV) | |
7901 | return; | |
7902 | kid = kUNOP->op_first; /* get past rv2sv */ | |
638eceb6 | 7903 | gv = kGVOP_gv; |
770526c1 NC |
7904 | if (GvSTASH(gv) != PL_curstash) |
7905 | return; | |
7906 | gvname = GvNAME(gv); | |
7907 | if ( descending | |
7908 | ? !(*gvname == 'a' && gvname[1] == '\0') | |
7909 | : !(*gvname == 'b' && gvname[1] == '\0')) | |
9c007264 JH |
7910 | return; |
7911 | o->op_flags &= ~(OPf_STACKED | OPf_SPECIAL); | |
eb209983 NC |
7912 | if (descending) |
7913 | o->op_private |= OPpSORT_DESCEND; | |
9c007264 JH |
7914 | if (k->op_type == OP_NCMP) |
7915 | o->op_private |= OPpSORT_NUMERIC; | |
7916 | if (k->op_type == OP_I_NCMP) | |
7917 | o->op_private |= OPpSORT_NUMERIC | OPpSORT_INTEGER; | |
e507f050 SM |
7918 | kid = cLISTOPo->op_first->op_sibling; |
7919 | cLISTOPo->op_first->op_sibling = kid->op_sibling; /* bypass old block */ | |
eb8433b7 NC |
7920 | #ifdef PERL_MAD |
7921 | op_getmad(kid,o,'S'); /* then delete it */ | |
7922 | #else | |
e507f050 | 7923 | op_free(kid); /* then delete it */ |
eb8433b7 | 7924 | #endif |
9c007264 | 7925 | } |
79072805 LW |
7926 | |
7927 | OP * | |
cea2e8a9 | 7928 | Perl_ck_split(pTHX_ OP *o) |
79072805 | 7929 | { |
27da23d5 | 7930 | dVAR; |
79072805 | 7931 | register OP *kid; |
aeea060c | 7932 | |
7918f24d NC |
7933 | PERL_ARGS_ASSERT_CK_SPLIT; |
7934 | ||
11343788 MB |
7935 | if (o->op_flags & OPf_STACKED) |
7936 | return no_fh_allowed(o); | |
79072805 | 7937 | |
11343788 | 7938 | kid = cLISTOPo->op_first; |
8990e307 | 7939 | if (kid->op_type != OP_NULL) |
cea2e8a9 | 7940 | Perl_croak(aTHX_ "panic: ck_split"); |
8990e307 | 7941 | kid = kid->op_sibling; |
11343788 MB |
7942 | op_free(cLISTOPo->op_first); |
7943 | cLISTOPo->op_first = kid; | |
85e6fe83 | 7944 | if (!kid) { |
396482e1 | 7945 | cLISTOPo->op_first = kid = newSVOP(OP_CONST, 0, newSVpvs(" ")); |
11343788 | 7946 | cLISTOPo->op_last = kid; /* There was only one element previously */ |
85e6fe83 | 7947 | } |
79072805 | 7948 | |
de4bf5b3 | 7949 | if (kid->op_type != OP_MATCH || kid->op_flags & OPf_STACKED) { |
551405c4 | 7950 | OP * const sibl = kid->op_sibling; |
463ee0b2 | 7951 | kid->op_sibling = 0; |
131b3ad0 | 7952 | kid = pmruntime( newPMOP(OP_MATCH, OPf_SPECIAL), kid, 0); |
11343788 MB |
7953 | if (cLISTOPo->op_first == cLISTOPo->op_last) |
7954 | cLISTOPo->op_last = kid; | |
7955 | cLISTOPo->op_first = kid; | |
79072805 LW |
7956 | kid->op_sibling = sibl; |
7957 | } | |
7958 | ||
7959 | kid->op_type = OP_PUSHRE; | |
22c35a8c | 7960 | kid->op_ppaddr = PL_ppaddr[OP_PUSHRE]; |
79072805 | 7961 | scalar(kid); |
a2a5de95 NC |
7962 | if (((PMOP *)kid)->op_pmflags & PMf_GLOBAL) { |
7963 | Perl_ck_warner(aTHX_ packWARN(WARN_REGEXP), | |
7964 | "Use of /g modifier is meaningless in split"); | |
f34840d8 | 7965 | } |
79072805 LW |
7966 | |
7967 | if (!kid->op_sibling) | |
54b9620d | 7968 | append_elem(OP_SPLIT, o, newDEFSVOP()); |
79072805 LW |
7969 | |
7970 | kid = kid->op_sibling; | |
7971 | scalar(kid); | |
7972 | ||
7973 | if (!kid->op_sibling) | |
11343788 | 7974 | append_elem(OP_SPLIT, o, newSVOP(OP_CONST, 0, newSViv(0))); |
ce3e5c45 | 7975 | assert(kid->op_sibling); |
79072805 LW |
7976 | |
7977 | kid = kid->op_sibling; | |
7978 | scalar(kid); | |
7979 | ||
7980 | if (kid->op_sibling) | |
53e06cf0 | 7981 | return too_many_arguments(o,OP_DESC(o)); |
79072805 | 7982 | |
11343788 | 7983 | return o; |
79072805 LW |
7984 | } |
7985 | ||
7986 | OP * | |
1c846c1f | 7987 | Perl_ck_join(pTHX_ OP *o) |
eb6e2d6f | 7988 | { |
551405c4 | 7989 | const OP * const kid = cLISTOPo->op_first->op_sibling; |
7918f24d NC |
7990 | |
7991 | PERL_ARGS_ASSERT_CK_JOIN; | |
7992 | ||
041457d9 DM |
7993 | if (kid && kid->op_type == OP_MATCH) { |
7994 | if (ckWARN(WARN_SYNTAX)) { | |
6867be6d | 7995 | const REGEXP *re = PM_GETRE(kPMOP); |
d2c6dc5e | 7996 | const char *pmstr = re ? RX_PRECOMP_const(re) : "STRING"; |
220fc49f | 7997 | const STRLEN len = re ? RX_PRELEN(re) : 6; |
9014280d | 7998 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
bcdf7404 | 7999 | "/%.*s/ should probably be written as \"%.*s\"", |
d83b45b8 | 8000 | (int)len, pmstr, (int)len, pmstr); |
eb6e2d6f GS |
8001 | } |
8002 | } | |
8003 | return ck_fun(o); | |
8004 | } | |
8005 | ||
8006 | OP * | |
cea2e8a9 | 8007 | Perl_ck_subr(pTHX_ OP *o) |
79072805 | 8008 | { |
97aff369 | 8009 | dVAR; |
11343788 MB |
8010 | OP *prev = ((cUNOPo->op_first->op_sibling) |
8011 | ? cUNOPo : ((UNOP*)cUNOPo->op_first))->op_first; | |
8012 | OP *o2 = prev->op_sibling; | |
4633a7c4 | 8013 | OP *cvop; |
a0751766 | 8014 | const char *proto = NULL; |
cbf82dd0 | 8015 | const char *proto_end = NULL; |
c445ea15 AL |
8016 | CV *cv = NULL; |
8017 | GV *namegv = NULL; | |
4633a7c4 LW |
8018 | int optional = 0; |
8019 | I32 arg = 0; | |
5b794e05 | 8020 | I32 contextclass = 0; |
d3fcec1f | 8021 | const char *e = NULL; |
0723351e | 8022 | bool delete_op = 0; |
4633a7c4 | 8023 | |
7918f24d NC |
8024 | PERL_ARGS_ASSERT_CK_SUBR; |
8025 | ||
d3011074 | 8026 | o->op_private |= OPpENTERSUB_HASTARG; |
11343788 | 8027 | for (cvop = o2; cvop->op_sibling; cvop = cvop->op_sibling) ; |
4633a7c4 | 8028 | if (cvop->op_type == OP_RV2CV) { |
11343788 | 8029 | o->op_private |= (cvop->op_private & OPpENTERSUB_AMPER); |
93c66552 | 8030 | op_null(cvop); /* disable rv2cv */ |
f7461760 Z |
8031 | if (!(o->op_private & OPpENTERSUB_AMPER)) { |
8032 | SVOP *tmpop = (SVOP*)((UNOP*)cvop)->op_first; | |
8033 | GV *gv = NULL; | |
8034 | switch (tmpop->op_type) { | |
8035 | case OP_GV: { | |
8036 | gv = cGVOPx_gv(tmpop); | |
8037 | cv = GvCVu(gv); | |
8038 | if (!cv) | |
8039 | tmpop->op_private |= OPpEARLY_CV; | |
8040 | } break; | |
8041 | case OP_CONST: { | |
8042 | SV *sv = cSVOPx_sv(tmpop); | |
8043 | if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVCV) | |
8044 | cv = (CV*)SvRV(sv); | |
8045 | } break; | |
8046 | } | |
8047 | if (cv && SvPOK(cv)) { | |
8048 | STRLEN len; | |
8049 | namegv = gv && CvANON(cv) ? gv : CvGV(cv); | |
8050 | proto = SvPV(MUTABLE_SV(cv), len); | |
8051 | proto_end = proto + len; | |
46fc3d4c | 8052 | } |
4633a7c4 LW |
8053 | } |
8054 | } | |
f5d5a27c | 8055 | else if (cvop->op_type == OP_METHOD || cvop->op_type == OP_METHOD_NAMED) { |
7a52d87a GS |
8056 | if (o2->op_type == OP_CONST) |
8057 | o2->op_private &= ~OPpCONST_STRICT; | |
58a40671 | 8058 | else if (o2->op_type == OP_LIST) { |
5f66b61c AL |
8059 | OP * const sib = ((UNOP*)o2)->op_first->op_sibling; |
8060 | if (sib && sib->op_type == OP_CONST) | |
8061 | sib->op_private &= ~OPpCONST_STRICT; | |
58a40671 | 8062 | } |
7a52d87a | 8063 | } |
3280af22 NIS |
8064 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
8065 | if (PERLDB_SUB && PL_curstash != PL_debstash) | |
11343788 MB |
8066 | o->op_private |= OPpENTERSUB_DB; |
8067 | while (o2 != cvop) { | |
eb8433b7 | 8068 | OP* o3; |
9fc012f4 GG |
8069 | if (PL_madskills && o2->op_type == OP_STUB) { |
8070 | o2 = o2->op_sibling; | |
8071 | continue; | |
8072 | } | |
eb8433b7 NC |
8073 | if (PL_madskills && o2->op_type == OP_NULL) |
8074 | o3 = ((UNOP*)o2)->op_first; | |
8075 | else | |
8076 | o3 = o2; | |
4633a7c4 | 8077 | if (proto) { |
cbf82dd0 | 8078 | if (proto >= proto_end) |
5dc0d613 | 8079 | return too_many_arguments(o, gv_ename(namegv)); |
cbf82dd0 NC |
8080 | |
8081 | switch (*proto) { | |
4633a7c4 LW |
8082 | case ';': |
8083 | optional = 1; | |
8084 | proto++; | |
8085 | continue; | |
b13fd70a | 8086 | case '_': |
f00d1d61 | 8087 | /* _ must be at the end */ |
cb40c25d | 8088 | if (proto[1] && proto[1] != ';') |
f00d1d61 | 8089 | goto oops; |
4633a7c4 LW |
8090 | case '$': |
8091 | proto++; | |
8092 | arg++; | |
11343788 | 8093 | scalar(o2); |
4633a7c4 LW |
8094 | break; |
8095 | case '%': | |
8096 | case '@': | |
11343788 | 8097 | list(o2); |
4633a7c4 LW |
8098 | arg++; |
8099 | break; | |
8100 | case '&': | |
8101 | proto++; | |
8102 | arg++; | |
eb8433b7 | 8103 | if (o3->op_type != OP_REFGEN && o3->op_type != OP_UNDEF) |
75fc29ea | 8104 | bad_type(arg, |
666ea192 JH |
8105 | arg == 1 ? "block or sub {}" : "sub {}", |
8106 | gv_ename(namegv), o3); | |
4633a7c4 LW |
8107 | break; |
8108 | case '*': | |
2ba6ecf4 | 8109 | /* '*' allows any scalar type, including bareword */ |
4633a7c4 LW |
8110 | proto++; |
8111 | arg++; | |
eb8433b7 | 8112 | if (o3->op_type == OP_RV2GV) |
2ba6ecf4 | 8113 | goto wrapref; /* autoconvert GLOB -> GLOBref */ |
eb8433b7 NC |
8114 | else if (o3->op_type == OP_CONST) |
8115 | o3->op_private &= ~OPpCONST_STRICT; | |
8116 | else if (o3->op_type == OP_ENTERSUB) { | |
9675f7ac | 8117 | /* accidental subroutine, revert to bareword */ |
eb8433b7 | 8118 | OP *gvop = ((UNOP*)o3)->op_first; |
9675f7ac GS |
8119 | if (gvop && gvop->op_type == OP_NULL) { |
8120 | gvop = ((UNOP*)gvop)->op_first; | |
8121 | if (gvop) { | |
8122 | for (; gvop->op_sibling; gvop = gvop->op_sibling) | |
8123 | ; | |
8124 | if (gvop && | |
8125 | (gvop->op_private & OPpENTERSUB_NOPAREN) && | |
8126 | (gvop = ((UNOP*)gvop)->op_first) && | |
8127 | gvop->op_type == OP_GV) | |
8128 | { | |
551405c4 AL |
8129 | GV * const gv = cGVOPx_gv(gvop); |
8130 | OP * const sibling = o2->op_sibling; | |
396482e1 | 8131 | SV * const n = newSVpvs(""); |
eb8433b7 | 8132 | #ifdef PERL_MAD |
1d866c12 | 8133 | OP * const oldo2 = o2; |
eb8433b7 | 8134 | #else |
9675f7ac | 8135 | op_free(o2); |
eb8433b7 | 8136 | #endif |
2a797ae2 | 8137 | gv_fullname4(n, gv, "", FALSE); |
2692f720 | 8138 | o2 = newSVOP(OP_CONST, 0, n); |
eb8433b7 | 8139 | op_getmad(oldo2,o2,'O'); |
9675f7ac GS |
8140 | prev->op_sibling = o2; |
8141 | o2->op_sibling = sibling; | |
8142 | } | |
8143 | } | |
8144 | } | |
8145 | } | |
2ba6ecf4 GS |
8146 | scalar(o2); |
8147 | break; | |
5b794e05 JH |
8148 | case '[': case ']': |
8149 | goto oops; | |
8150 | break; | |
4633a7c4 LW |
8151 | case '\\': |
8152 | proto++; | |
8153 | arg++; | |
5b794e05 | 8154 | again: |
4633a7c4 | 8155 | switch (*proto++) { |
5b794e05 JH |
8156 | case '[': |
8157 | if (contextclass++ == 0) { | |
841d93c8 | 8158 | e = strchr(proto, ']'); |
5b794e05 JH |
8159 | if (!e || e == proto) |
8160 | goto oops; | |
8161 | } | |
8162 | else | |
8163 | goto oops; | |
8164 | goto again; | |
8165 | break; | |
8166 | case ']': | |
466bafcd | 8167 | if (contextclass) { |
a0751766 NC |
8168 | const char *p = proto; |
8169 | const char *const end = proto; | |
466bafcd | 8170 | contextclass = 0; |
47127b64 | 8171 | while (*--p != '[') {} |
a0751766 NC |
8172 | bad_type(arg, Perl_form(aTHX_ "one of %.*s", |
8173 | (int)(end - p), p), | |
8174 | gv_ename(namegv), o3); | |
466bafcd | 8175 | } else |
5b794e05 JH |
8176 | goto oops; |
8177 | break; | |
4633a7c4 | 8178 | case '*': |
eb8433b7 | 8179 | if (o3->op_type == OP_RV2GV) |
5b794e05 JH |
8180 | goto wrapref; |
8181 | if (!contextclass) | |
eb8433b7 | 8182 | bad_type(arg, "symbol", gv_ename(namegv), o3); |
5b794e05 | 8183 | break; |
4633a7c4 | 8184 | case '&': |
eb8433b7 | 8185 | if (o3->op_type == OP_ENTERSUB) |
5b794e05 JH |
8186 | goto wrapref; |
8187 | if (!contextclass) | |
eb8433b7 NC |
8188 | bad_type(arg, "subroutine entry", gv_ename(namegv), |
8189 | o3); | |
5b794e05 | 8190 | break; |
4633a7c4 | 8191 | case '$': |
eb8433b7 NC |
8192 | if (o3->op_type == OP_RV2SV || |
8193 | o3->op_type == OP_PADSV || | |
8194 | o3->op_type == OP_HELEM || | |
5b9081af | 8195 | o3->op_type == OP_AELEM) |
5b794e05 JH |
8196 | goto wrapref; |
8197 | if (!contextclass) | |
eb8433b7 | 8198 | bad_type(arg, "scalar", gv_ename(namegv), o3); |
5b794e05 | 8199 | break; |
4633a7c4 | 8200 | case '@': |
eb8433b7 NC |
8201 | if (o3->op_type == OP_RV2AV || |
8202 | o3->op_type == OP_PADAV) | |
5b794e05 JH |
8203 | goto wrapref; |
8204 | if (!contextclass) | |
eb8433b7 | 8205 | bad_type(arg, "array", gv_ename(namegv), o3); |
5b794e05 | 8206 | break; |
4633a7c4 | 8207 | case '%': |
eb8433b7 NC |
8208 | if (o3->op_type == OP_RV2HV || |
8209 | o3->op_type == OP_PADHV) | |
5b794e05 JH |
8210 | goto wrapref; |
8211 | if (!contextclass) | |
eb8433b7 | 8212 | bad_type(arg, "hash", gv_ename(namegv), o3); |
5b794e05 JH |
8213 | break; |
8214 | wrapref: | |
4633a7c4 | 8215 | { |
551405c4 AL |
8216 | OP* const kid = o2; |
8217 | OP* const sib = kid->op_sibling; | |
4633a7c4 | 8218 | kid->op_sibling = 0; |
6fa846a0 GS |
8219 | o2 = newUNOP(OP_REFGEN, 0, kid); |
8220 | o2->op_sibling = sib; | |
e858de61 | 8221 | prev->op_sibling = o2; |
4633a7c4 | 8222 | } |
841d93c8 | 8223 | if (contextclass && e) { |
5b794e05 JH |
8224 | proto = e + 1; |
8225 | contextclass = 0; | |
8226 | } | |
4633a7c4 LW |
8227 | break; |
8228 | default: goto oops; | |
8229 | } | |
5b794e05 JH |
8230 | if (contextclass) |
8231 | goto again; | |
4633a7c4 | 8232 | break; |
b1cb66bf | 8233 | case ' ': |
8234 | proto++; | |
8235 | continue; | |
4633a7c4 LW |
8236 | default: |
8237 | oops: | |
35c1215d | 8238 | Perl_croak(aTHX_ "Malformed prototype for %s: %"SVf, |
be2597df | 8239 | gv_ename(namegv), SVfARG(cv)); |
4633a7c4 LW |
8240 | } |
8241 | } | |
8242 | else | |
11343788 MB |
8243 | list(o2); |
8244 | mod(o2, OP_ENTERSUB); | |
8245 | prev = o2; | |
8246 | o2 = o2->op_sibling; | |
551405c4 | 8247 | } /* while */ |
236b555a RGS |
8248 | if (o2 == cvop && proto && *proto == '_') { |
8249 | /* generate an access to $_ */ | |
8250 | o2 = newDEFSVOP(); | |
8251 | o2->op_sibling = prev->op_sibling; | |
8252 | prev->op_sibling = o2; /* instead of cvop */ | |
8253 | } | |
cbf82dd0 | 8254 | if (proto && !optional && proto_end > proto && |
236b555a | 8255 | (*proto != '@' && *proto != '%' && *proto != ';' && *proto != '_')) |
5dc0d613 | 8256 | return too_few_arguments(o, gv_ename(namegv)); |
0723351e | 8257 | if(delete_op) { |
eb8433b7 | 8258 | #ifdef PERL_MAD |
1d866c12 | 8259 | OP * const oldo = o; |
eb8433b7 | 8260 | #else |
06492da6 | 8261 | op_free(o); |
eb8433b7 | 8262 | #endif |
06492da6 | 8263 | o=newSVOP(OP_CONST, 0, newSViv(0)); |
eb8433b7 | 8264 | op_getmad(oldo,o,'O'); |
06492da6 | 8265 | } |
11343788 | 8266 | return o; |
79072805 LW |
8267 | } |
8268 | ||
8269 | OP * | |
cea2e8a9 | 8270 | Perl_ck_svconst(pTHX_ OP *o) |
8990e307 | 8271 | { |
7918f24d | 8272 | PERL_ARGS_ASSERT_CK_SVCONST; |
96a5add6 | 8273 | PERL_UNUSED_CONTEXT; |
11343788 MB |
8274 | SvREADONLY_on(cSVOPo->op_sv); |
8275 | return o; | |
8990e307 LW |
8276 | } |
8277 | ||
8278 | OP * | |
d4ac975e GA |
8279 | Perl_ck_chdir(pTHX_ OP *o) |
8280 | { | |
8281 | if (o->op_flags & OPf_KIDS) { | |
1496a290 | 8282 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
d4ac975e GA |
8283 | |
8284 | if (kid && kid->op_type == OP_CONST && | |
8285 | (kid->op_private & OPpCONST_BARE)) | |
8286 | { | |
8287 | o->op_flags |= OPf_SPECIAL; | |
8288 | kid->op_private &= ~OPpCONST_STRICT; | |
8289 | } | |
8290 | } | |
8291 | return ck_fun(o); | |
8292 | } | |
8293 | ||
8294 | OP * | |
cea2e8a9 | 8295 | Perl_ck_trunc(pTHX_ OP *o) |
79072805 | 8296 | { |
7918f24d NC |
8297 | PERL_ARGS_ASSERT_CK_TRUNC; |
8298 | ||
11343788 MB |
8299 | if (o->op_flags & OPf_KIDS) { |
8300 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 | 8301 | |
a0d0e21e LW |
8302 | if (kid->op_type == OP_NULL) |
8303 | kid = (SVOP*)kid->op_sibling; | |
bb53490d GS |
8304 | if (kid && kid->op_type == OP_CONST && |
8305 | (kid->op_private & OPpCONST_BARE)) | |
8306 | { | |
11343788 | 8307 | o->op_flags |= OPf_SPECIAL; |
bb53490d GS |
8308 | kid->op_private &= ~OPpCONST_STRICT; |
8309 | } | |
79072805 | 8310 | } |
11343788 | 8311 | return ck_fun(o); |
79072805 LW |
8312 | } |
8313 | ||
35fba0d9 | 8314 | OP * |
bab9c0ac RGS |
8315 | Perl_ck_unpack(pTHX_ OP *o) |
8316 | { | |
8317 | OP *kid = cLISTOPo->op_first; | |
7918f24d NC |
8318 | |
8319 | PERL_ARGS_ASSERT_CK_UNPACK; | |
8320 | ||
bab9c0ac RGS |
8321 | if (kid->op_sibling) { |
8322 | kid = kid->op_sibling; | |
8323 | if (!kid->op_sibling) | |
8324 | kid->op_sibling = newDEFSVOP(); | |
8325 | } | |
8326 | return ck_fun(o); | |
8327 | } | |
8328 | ||
8329 | OP * | |
35fba0d9 RG |
8330 | Perl_ck_substr(pTHX_ OP *o) |
8331 | { | |
7918f24d NC |
8332 | PERL_ARGS_ASSERT_CK_SUBSTR; |
8333 | ||
35fba0d9 | 8334 | o = ck_fun(o); |
1d866c12 | 8335 | if ((o->op_flags & OPf_KIDS) && (o->op_private == 4)) { |
35fba0d9 RG |
8336 | OP *kid = cLISTOPo->op_first; |
8337 | ||
8338 | if (kid->op_type == OP_NULL) | |
8339 | kid = kid->op_sibling; | |
8340 | if (kid) | |
8341 | kid->op_flags |= OPf_MOD; | |
8342 | ||
8343 | } | |
8344 | return o; | |
8345 | } | |
8346 | ||
878d132a NC |
8347 | OP * |
8348 | Perl_ck_each(pTHX_ OP *o) | |
8349 | { | |
d75c0fe7 | 8350 | dVAR; |
a916b302 | 8351 | OP *kid = o->op_flags & OPf_KIDS ? cLISTOPo->op_first : NULL; |
878d132a | 8352 | |
7918f24d NC |
8353 | PERL_ARGS_ASSERT_CK_EACH; |
8354 | ||
a916b302 RGS |
8355 | if (kid) { |
8356 | if (kid->op_type == OP_PADAV || kid->op_type == OP_RV2AV) { | |
8357 | const unsigned new_type = o->op_type == OP_EACH ? OP_AEACH | |
8358 | : o->op_type == OP_KEYS ? OP_AKEYS : OP_AVALUES; | |
8359 | o->op_type = new_type; | |
8360 | o->op_ppaddr = PL_ppaddr[new_type]; | |
8361 | } | |
8362 | else if (!(kid->op_type == OP_PADHV || kid->op_type == OP_RV2HV | |
8363 | || (kid->op_type == OP_CONST && kid->op_private & OPpCONST_BARE) | |
8364 | )) { | |
8365 | bad_type(1, "hash or array", PL_op_desc[o->op_type], kid); | |
8366 | return o; | |
8367 | } | |
878d132a NC |
8368 | } |
8369 | return ck_fun(o); | |
8370 | } | |
8371 | ||
867fa1e2 YO |
8372 | /* caller is supposed to assign the return to the |
8373 | container of the rep_op var */ | |
20381b50 | 8374 | STATIC OP * |
867fa1e2 | 8375 | S_opt_scalarhv(pTHX_ OP *rep_op) { |
749123ff | 8376 | dVAR; |
867fa1e2 YO |
8377 | UNOP *unop; |
8378 | ||
8379 | PERL_ARGS_ASSERT_OPT_SCALARHV; | |
8380 | ||
8381 | NewOp(1101, unop, 1, UNOP); | |
8382 | unop->op_type = (OPCODE)OP_BOOLKEYS; | |
8383 | unop->op_ppaddr = PL_ppaddr[OP_BOOLKEYS]; | |
8384 | unop->op_flags = (U8)(OPf_WANT_SCALAR | OPf_KIDS ); | |
8385 | unop->op_private = (U8)(1 | ((OPf_WANT_SCALAR | OPf_KIDS) >> 8)); | |
8386 | unop->op_first = rep_op; | |
8387 | unop->op_next = rep_op->op_next; | |
8388 | rep_op->op_next = (OP*)unop; | |
8389 | rep_op->op_flags|=(OPf_REF | OPf_MOD); | |
8390 | unop->op_sibling = rep_op->op_sibling; | |
8391 | rep_op->op_sibling = NULL; | |
8392 | /* unop->op_targ = pad_alloc(OP_BOOLKEYS, SVs_PADTMP); */ | |
8393 | if (rep_op->op_type == OP_PADHV) { | |
8394 | rep_op->op_flags &= ~OPf_WANT_SCALAR; | |
8395 | rep_op->op_flags |= OPf_WANT_LIST; | |
8396 | } | |
8397 | return (OP*)unop; | |
8398 | } | |
8399 | ||
2f9e2db0 VP |
8400 | /* Checks if o acts as an in-place operator on an array. oright points to the |
8401 | * beginning of the right-hand side. Returns the left-hand side of the | |
8402 | * assignment if o acts in-place, or NULL otherwise. */ | |
8403 | ||
20381b50 | 8404 | STATIC OP * |
2f9e2db0 VP |
8405 | S_is_inplace_av(pTHX_ OP *o, OP *oright) { |
8406 | OP *o2; | |
8407 | OP *oleft = NULL; | |
8408 | ||
8409 | PERL_ARGS_ASSERT_IS_INPLACE_AV; | |
8410 | ||
8411 | if (!oright || | |
8412 | (oright->op_type != OP_RV2AV && oright->op_type != OP_PADAV) | |
8413 | || oright->op_next != o | |
8414 | || (oright->op_private & OPpLVAL_INTRO) | |
8415 | ) | |
8416 | return NULL; | |
8417 | ||
8418 | /* o2 follows the chain of op_nexts through the LHS of the | |
8419 | * assign (if any) to the aassign op itself */ | |
8420 | o2 = o->op_next; | |
8421 | if (!o2 || o2->op_type != OP_NULL) | |
8422 | return NULL; | |
8423 | o2 = o2->op_next; | |
8424 | if (!o2 || o2->op_type != OP_PUSHMARK) | |
8425 | return NULL; | |
8426 | o2 = o2->op_next; | |
8427 | if (o2 && o2->op_type == OP_GV) | |
8428 | o2 = o2->op_next; | |
8429 | if (!o2 | |
8430 | || (o2->op_type != OP_PADAV && o2->op_type != OP_RV2AV) | |
8431 | || (o2->op_private & OPpLVAL_INTRO) | |
8432 | ) | |
8433 | return NULL; | |
8434 | oleft = o2; | |
8435 | o2 = o2->op_next; | |
8436 | if (!o2 || o2->op_type != OP_NULL) | |
8437 | return NULL; | |
8438 | o2 = o2->op_next; | |
8439 | if (!o2 || o2->op_type != OP_AASSIGN | |
8440 | || (o2->op_flags & OPf_WANT) != OPf_WANT_VOID) | |
8441 | return NULL; | |
8442 | ||
8443 | /* check that the sort is the first arg on RHS of assign */ | |
8444 | ||
8445 | o2 = cUNOPx(o2)->op_first; | |
8446 | if (!o2 || o2->op_type != OP_NULL) | |
8447 | return NULL; | |
8448 | o2 = cUNOPx(o2)->op_first; | |
8449 | if (!o2 || o2->op_type != OP_PUSHMARK) | |
8450 | return NULL; | |
8451 | if (o2->op_sibling != o) | |
8452 | return NULL; | |
8453 | ||
8454 | /* check the array is the same on both sides */ | |
8455 | if (oleft->op_type == OP_RV2AV) { | |
8456 | if (oright->op_type != OP_RV2AV | |
8457 | || !cUNOPx(oright)->op_first | |
8458 | || cUNOPx(oright)->op_first->op_type != OP_GV | |
8459 | || cGVOPx_gv(cUNOPx(oleft)->op_first) != | |
8460 | cGVOPx_gv(cUNOPx(oright)->op_first) | |
8461 | ) | |
8462 | return NULL; | |
8463 | } | |
8464 | else if (oright->op_type != OP_PADAV | |
8465 | || oright->op_targ != oleft->op_targ | |
8466 | ) | |
8467 | return NULL; | |
8468 | ||
8469 | return oleft; | |
8470 | } | |
8471 | ||
61b743bb DM |
8472 | /* A peephole optimizer. We visit the ops in the order they're to execute. |
8473 | * See the comments at the top of this file for more details about when | |
8474 | * peep() is called */ | |
463ee0b2 | 8475 | |
79072805 | 8476 | void |
864dbfa3 | 8477 | Perl_peep(pTHX_ register OP *o) |
79072805 | 8478 | { |
27da23d5 | 8479 | dVAR; |
c445ea15 | 8480 | register OP* oldop = NULL; |
2d8e6c8d | 8481 | |
2814eb74 | 8482 | if (!o || o->op_opt) |
79072805 | 8483 | return; |
a0d0e21e | 8484 | ENTER; |
462e5cf6 | 8485 | SAVEOP(); |
7766f137 | 8486 | SAVEVPTR(PL_curcop); |
a0d0e21e | 8487 | for (; o; o = o->op_next) { |
2814eb74 | 8488 | if (o->op_opt) |
a0d0e21e | 8489 | break; |
6d7dd4a5 NC |
8490 | /* By default, this op has now been optimised. A couple of cases below |
8491 | clear this again. */ | |
8492 | o->op_opt = 1; | |
533c011a | 8493 | PL_op = o; |
a0d0e21e LW |
8494 | switch (o->op_type) { |
8495 | case OP_NEXTSTATE: | |
8496 | case OP_DBSTATE: | |
3280af22 | 8497 | PL_curcop = ((COP*)o); /* for warnings */ |
a0d0e21e LW |
8498 | break; |
8499 | ||
a0d0e21e | 8500 | case OP_CONST: |
7a52d87a GS |
8501 | if (cSVOPo->op_private & OPpCONST_STRICT) |
8502 | no_bareword_allowed(o); | |
7766f137 | 8503 | #ifdef USE_ITHREADS |
996c9baa | 8504 | case OP_HINTSEVAL: |
3848b962 | 8505 | case OP_METHOD_NAMED: |
7766f137 GS |
8506 | /* Relocate sv to the pad for thread safety. |
8507 | * Despite being a "constant", the SV is written to, | |
8508 | * for reference counts, sv_upgrade() etc. */ | |
8509 | if (cSVOP->op_sv) { | |
6867be6d | 8510 | const PADOFFSET ix = pad_alloc(OP_CONST, SVs_PADTMP); |
996c9baa | 8511 | if (o->op_type != OP_METHOD_NAMED && SvPADTMP(cSVOPo->op_sv)) { |
6a7129a1 | 8512 | /* If op_sv is already a PADTMP then it is being used by |
9a049f1c | 8513 | * some pad, so make a copy. */ |
dd2155a4 DM |
8514 | sv_setsv(PAD_SVl(ix),cSVOPo->op_sv); |
8515 | SvREADONLY_on(PAD_SVl(ix)); | |
6a7129a1 GS |
8516 | SvREFCNT_dec(cSVOPo->op_sv); |
8517 | } | |
996c9baa | 8518 | else if (o->op_type != OP_METHOD_NAMED |
052ca17e NC |
8519 | && cSVOPo->op_sv == &PL_sv_undef) { |
8520 | /* PL_sv_undef is hack - it's unsafe to store it in the | |
8521 | AV that is the pad, because av_fetch treats values of | |
8522 | PL_sv_undef as a "free" AV entry and will merrily | |
8523 | replace them with a new SV, causing pad_alloc to think | |
8524 | that this pad slot is free. (When, clearly, it is not) | |
8525 | */ | |
8526 | SvOK_off(PAD_SVl(ix)); | |
8527 | SvPADTMP_on(PAD_SVl(ix)); | |
8528 | SvREADONLY_on(PAD_SVl(ix)); | |
8529 | } | |
6a7129a1 | 8530 | else { |
dd2155a4 | 8531 | SvREFCNT_dec(PAD_SVl(ix)); |
6a7129a1 | 8532 | SvPADTMP_on(cSVOPo->op_sv); |
dd2155a4 | 8533 | PAD_SETSV(ix, cSVOPo->op_sv); |
9a049f1c | 8534 | /* XXX I don't know how this isn't readonly already. */ |
dd2155a4 | 8535 | SvREADONLY_on(PAD_SVl(ix)); |
6a7129a1 | 8536 | } |
a0714e2c | 8537 | cSVOPo->op_sv = NULL; |
7766f137 GS |
8538 | o->op_targ = ix; |
8539 | } | |
8540 | #endif | |
07447971 GS |
8541 | break; |
8542 | ||
df91b2c5 AE |
8543 | case OP_CONCAT: |
8544 | if (o->op_next && o->op_next->op_type == OP_STRINGIFY) { | |
8545 | if (o->op_next->op_private & OPpTARGET_MY) { | |
8546 | if (o->op_flags & OPf_STACKED) /* chained concats */ | |
a6aa0b75 | 8547 | break; /* ignore_optimization */ |
df91b2c5 AE |
8548 | else { |
8549 | /* assert(PL_opargs[o->op_type] & OA_TARGLEX); */ | |
8550 | o->op_targ = o->op_next->op_targ; | |
8551 | o->op_next->op_targ = 0; | |
8552 | o->op_private |= OPpTARGET_MY; | |
8553 | } | |
8554 | } | |
8555 | op_null(o->op_next); | |
8556 | } | |
df91b2c5 | 8557 | break; |
6d7dd4a5 NC |
8558 | case OP_STUB: |
8559 | if ((o->op_flags & OPf_WANT) != OPf_WANT_LIST) { | |
8560 | break; /* Scalar stub must produce undef. List stub is noop */ | |
8561 | } | |
8562 | goto nothin; | |
79072805 | 8563 | case OP_NULL: |
acb36ea4 | 8564 | if (o->op_targ == OP_NEXTSTATE |
5edb5b2a | 8565 | || o->op_targ == OP_DBSTATE) |
acb36ea4 | 8566 | { |
3280af22 | 8567 | PL_curcop = ((COP*)o); |
acb36ea4 | 8568 | } |
dad75012 AMS |
8569 | /* XXX: We avoid setting op_seq here to prevent later calls |
8570 | to peep() from mistakenly concluding that optimisation | |
8571 | has already occurred. This doesn't fix the real problem, | |
8572 | though (See 20010220.007). AMS 20010719 */ | |
2814eb74 | 8573 | /* op_seq functionality is now replaced by op_opt */ |
6d7dd4a5 | 8574 | o->op_opt = 0; |
f46f2f82 | 8575 | /* FALL THROUGH */ |
79072805 | 8576 | case OP_SCALAR: |
93a17b20 | 8577 | case OP_LINESEQ: |
463ee0b2 | 8578 | case OP_SCOPE: |
6d7dd4a5 | 8579 | nothin: |
a0d0e21e LW |
8580 | if (oldop && o->op_next) { |
8581 | oldop->op_next = o->op_next; | |
6d7dd4a5 | 8582 | o->op_opt = 0; |
79072805 LW |
8583 | continue; |
8584 | } | |
79072805 LW |
8585 | break; |
8586 | ||
6a077020 | 8587 | case OP_PADAV: |
79072805 | 8588 | case OP_GV: |
6a077020 | 8589 | if (o->op_type == OP_PADAV || o->op_next->op_type == OP_RV2AV) { |
0bd48802 | 8590 | OP* const pop = (o->op_type == OP_PADAV) ? |
6a077020 | 8591 | o->op_next : o->op_next->op_next; |
a0d0e21e | 8592 | IV i; |
f9dc862f | 8593 | if (pop && pop->op_type == OP_CONST && |
af5acbb4 | 8594 | ((PL_op = pop->op_next)) && |
8990e307 | 8595 | pop->op_next->op_type == OP_AELEM && |
a0d0e21e | 8596 | !(pop->op_next->op_private & |
78f9721b | 8597 | (OPpLVAL_INTRO|OPpLVAL_DEFER|OPpDEREF|OPpMAYBE_LVSUB)) && |
fc15ae8f | 8598 | (i = SvIV(((SVOP*)pop)->op_sv) - CopARYBASE_get(PL_curcop)) |
a0d0e21e | 8599 | <= 255 && |
8990e307 LW |
8600 | i >= 0) |
8601 | { | |
350de78d | 8602 | GV *gv; |
af5acbb4 DM |
8603 | if (cSVOPx(pop)->op_private & OPpCONST_STRICT) |
8604 | no_bareword_allowed(pop); | |
6a077020 DM |
8605 | if (o->op_type == OP_GV) |
8606 | op_null(o->op_next); | |
93c66552 DM |
8607 | op_null(pop->op_next); |
8608 | op_null(pop); | |
a0d0e21e LW |
8609 | o->op_flags |= pop->op_next->op_flags & OPf_MOD; |
8610 | o->op_next = pop->op_next->op_next; | |
22c35a8c | 8611 | o->op_ppaddr = PL_ppaddr[OP_AELEMFAST]; |
a0d0e21e | 8612 | o->op_private = (U8)i; |
6a077020 DM |
8613 | if (o->op_type == OP_GV) { |
8614 | gv = cGVOPo_gv; | |
8615 | GvAVn(gv); | |
8616 | } | |
8617 | else | |
8618 | o->op_flags |= OPf_SPECIAL; | |
8619 | o->op_type = OP_AELEMFAST; | |
8620 | } | |
6a077020 DM |
8621 | break; |
8622 | } | |
8623 | ||
8624 | if (o->op_next->op_type == OP_RV2SV) { | |
8625 | if (!(o->op_next->op_private & OPpDEREF)) { | |
8626 | op_null(o->op_next); | |
8627 | o->op_private |= o->op_next->op_private & (OPpLVAL_INTRO | |
8628 | | OPpOUR_INTRO); | |
8629 | o->op_next = o->op_next->op_next; | |
8630 | o->op_type = OP_GVSV; | |
8631 | o->op_ppaddr = PL_ppaddr[OP_GVSV]; | |
8990e307 | 8632 | } |
79072805 | 8633 | } |
e476b1b5 | 8634 | else if ((o->op_private & OPpEARLY_CV) && ckWARN(WARN_PROTOTYPE)) { |
551405c4 | 8635 | GV * const gv = cGVOPo_gv; |
b15aece3 | 8636 | if (SvTYPE(gv) == SVt_PVGV && GvCV(gv) && SvPVX_const(GvCV(gv))) { |
76cd736e | 8637 | /* XXX could check prototype here instead of just carping */ |
551405c4 | 8638 | SV * const sv = sv_newmortal(); |
bd61b366 | 8639 | gv_efullname3(sv, gv, NULL); |
9014280d | 8640 | Perl_warner(aTHX_ packWARN(WARN_PROTOTYPE), |
35c1215d | 8641 | "%"SVf"() called too early to check prototype", |
be2597df | 8642 | SVfARG(sv)); |
76cd736e GS |
8643 | } |
8644 | } | |
89de2904 AMS |
8645 | else if (o->op_next->op_type == OP_READLINE |
8646 | && o->op_next->op_next->op_type == OP_CONCAT | |
8647 | && (o->op_next->op_next->op_flags & OPf_STACKED)) | |
8648 | { | |
d2c45030 AMS |
8649 | /* Turn "$a .= <FH>" into an OP_RCATLINE. AMS 20010917 */ |
8650 | o->op_type = OP_RCATLINE; | |
8651 | o->op_flags |= OPf_STACKED; | |
8652 | o->op_ppaddr = PL_ppaddr[OP_RCATLINE]; | |
89de2904 | 8653 | op_null(o->op_next->op_next); |
d2c45030 | 8654 | op_null(o->op_next); |
89de2904 | 8655 | } |
76cd736e | 8656 | |
79072805 | 8657 | break; |
867fa1e2 YO |
8658 | |
8659 | { | |
8660 | OP *fop; | |
8661 | OP *sop; | |
8662 | ||
8663 | case OP_NOT: | |
8664 | fop = cUNOP->op_first; | |
8665 | sop = NULL; | |
8666 | goto stitch_keys; | |
8667 | break; | |
8668 | ||
8669 | case OP_AND: | |
79072805 | 8670 | case OP_OR: |
c963b151 | 8671 | case OP_DOR: |
867fa1e2 YO |
8672 | fop = cLOGOP->op_first; |
8673 | sop = fop->op_sibling; | |
8674 | while (cLOGOP->op_other->op_type == OP_NULL) | |
8675 | cLOGOP->op_other = cLOGOP->op_other->op_next; | |
8676 | peep(cLOGOP->op_other); /* Recursive calls are not replaced by fptr calls */ | |
8677 | ||
8678 | stitch_keys: | |
8679 | o->op_opt = 1; | |
8680 | if ((fop->op_type == OP_PADHV || fop->op_type == OP_RV2HV) | |
8681 | || ( sop && | |
8682 | (sop->op_type == OP_PADHV || sop->op_type == OP_RV2HV) | |
8683 | ) | |
8684 | ){ | |
8685 | OP * nop = o; | |
8686 | OP * lop = o; | |
aaf643ce | 8687 | if (!((nop->op_flags & OPf_WANT) == OPf_WANT_VOID)) { |
867fa1e2 YO |
8688 | while (nop && nop->op_next) { |
8689 | switch (nop->op_next->op_type) { | |
8690 | case OP_NOT: | |
8691 | case OP_AND: | |
8692 | case OP_OR: | |
8693 | case OP_DOR: | |
8694 | lop = nop = nop->op_next; | |
8695 | break; | |
8696 | case OP_NULL: | |
8697 | nop = nop->op_next; | |
8698 | break; | |
8699 | default: | |
8700 | nop = NULL; | |
8701 | break; | |
8702 | } | |
8703 | } | |
8704 | } | |
aaf643ce | 8705 | if ((lop->op_flags & OPf_WANT) == OPf_WANT_VOID) { |
867fa1e2 YO |
8706 | if (fop->op_type == OP_PADHV || fop->op_type == OP_RV2HV) |
8707 | cLOGOP->op_first = opt_scalarhv(fop); | |
8708 | if (sop && (sop->op_type == OP_PADHV || sop->op_type == OP_RV2HV)) | |
8709 | cLOGOP->op_first->op_sibling = opt_scalarhv(sop); | |
8710 | } | |
8711 | } | |
8712 | ||
8713 | ||
8714 | break; | |
8715 | } | |
8716 | ||
8717 | case OP_MAPWHILE: | |
8718 | case OP_GREPWHILE: | |
2c2d71f5 JH |
8719 | case OP_ANDASSIGN: |
8720 | case OP_ORASSIGN: | |
c963b151 | 8721 | case OP_DORASSIGN: |
1a67a97c SM |
8722 | case OP_COND_EXPR: |
8723 | case OP_RANGE: | |
c5917253 | 8724 | case OP_ONCE: |
fd4d1407 IZ |
8725 | while (cLOGOP->op_other->op_type == OP_NULL) |
8726 | cLOGOP->op_other = cLOGOP->op_other->op_next; | |
a2efc822 | 8727 | peep(cLOGOP->op_other); /* Recursive calls are not replaced by fptr calls */ |
79072805 LW |
8728 | break; |
8729 | ||
79072805 | 8730 | case OP_ENTERLOOP: |
9c2ca71a | 8731 | case OP_ENTERITER: |
58cccf98 SM |
8732 | while (cLOOP->op_redoop->op_type == OP_NULL) |
8733 | cLOOP->op_redoop = cLOOP->op_redoop->op_next; | |
79072805 | 8734 | peep(cLOOP->op_redoop); |
58cccf98 SM |
8735 | while (cLOOP->op_nextop->op_type == OP_NULL) |
8736 | cLOOP->op_nextop = cLOOP->op_nextop->op_next; | |
79072805 | 8737 | peep(cLOOP->op_nextop); |
58cccf98 SM |
8738 | while (cLOOP->op_lastop->op_type == OP_NULL) |
8739 | cLOOP->op_lastop = cLOOP->op_lastop->op_next; | |
79072805 LW |
8740 | peep(cLOOP->op_lastop); |
8741 | break; | |
8742 | ||
79072805 | 8743 | case OP_SUBST: |
29f2e912 NC |
8744 | assert(!(cPMOP->op_pmflags & PMf_ONCE)); |
8745 | while (cPMOP->op_pmstashstartu.op_pmreplstart && | |
8746 | cPMOP->op_pmstashstartu.op_pmreplstart->op_type == OP_NULL) | |
8747 | cPMOP->op_pmstashstartu.op_pmreplstart | |
8748 | = cPMOP->op_pmstashstartu.op_pmreplstart->op_next; | |
8749 | peep(cPMOP->op_pmstashstartu.op_pmreplstart); | |
79072805 LW |
8750 | break; |
8751 | ||
a0d0e21e | 8752 | case OP_EXEC: |
041457d9 DM |
8753 | if (o->op_next && o->op_next->op_type == OP_NEXTSTATE |
8754 | && ckWARN(WARN_SYNTAX)) | |
8755 | { | |
1496a290 AL |
8756 | if (o->op_next->op_sibling) { |
8757 | const OPCODE type = o->op_next->op_sibling->op_type; | |
8758 | if (type != OP_EXIT && type != OP_WARN && type != OP_DIE) { | |
8759 | const line_t oldline = CopLINE(PL_curcop); | |
8760 | CopLINE_set(PL_curcop, CopLINE((COP*)o->op_next)); | |
8761 | Perl_warner(aTHX_ packWARN(WARN_EXEC), | |
8762 | "Statement unlikely to be reached"); | |
8763 | Perl_warner(aTHX_ packWARN(WARN_EXEC), | |
8764 | "\t(Maybe you meant system() when you said exec()?)\n"); | |
8765 | CopLINE_set(PL_curcop, oldline); | |
8766 | } | |
a0d0e21e LW |
8767 | } |
8768 | } | |
8769 | break; | |
b2ffa427 | 8770 | |
c750a3ec | 8771 | case OP_HELEM: { |
e75d1f10 | 8772 | UNOP *rop; |
6d822dc4 | 8773 | SV *lexname; |
e75d1f10 | 8774 | GV **fields; |
6d822dc4 | 8775 | SV **svp, *sv; |
d5263905 | 8776 | const char *key = NULL; |
c750a3ec | 8777 | STRLEN keylen; |
b2ffa427 | 8778 | |
1c846c1f | 8779 | if (((BINOP*)o)->op_last->op_type != OP_CONST) |
c750a3ec | 8780 | break; |
1c846c1f NIS |
8781 | |
8782 | /* Make the CONST have a shared SV */ | |
8783 | svp = cSVOPx_svp(((BINOP*)o)->op_last); | |
38bb37b9 | 8784 | if (!SvFAKE(sv = *svp) || !SvREADONLY(sv)) { |
d5263905 | 8785 | key = SvPV_const(sv, keylen); |
25716404 | 8786 | lexname = newSVpvn_share(key, |
bb7a0f54 | 8787 | SvUTF8(sv) ? -(I32)keylen : (I32)keylen, |
25716404 | 8788 | 0); |
1c846c1f NIS |
8789 | SvREFCNT_dec(sv); |
8790 | *svp = lexname; | |
8791 | } | |
e75d1f10 RD |
8792 | |
8793 | if ((o->op_private & (OPpLVAL_INTRO))) | |
8794 | break; | |
8795 | ||
8796 | rop = (UNOP*)((BINOP*)o)->op_first; | |
8797 | if (rop->op_type != OP_RV2HV || rop->op_first->op_type != OP_PADSV) | |
8798 | break; | |
8799 | lexname = *av_fetch(PL_comppad_name, rop->op_first->op_targ, TRUE); | |
00b1698f | 8800 | if (!SvPAD_TYPED(lexname)) |
e75d1f10 | 8801 | break; |
a4fc7abc | 8802 | fields = (GV**)hv_fetchs(SvSTASH(lexname), "FIELDS", FALSE); |
e75d1f10 RD |
8803 | if (!fields || !GvHV(*fields)) |
8804 | break; | |
93524f2b | 8805 | key = SvPV_const(*svp, keylen); |
e75d1f10 | 8806 | if (!hv_fetch(GvHV(*fields), key, |
bb7a0f54 | 8807 | SvUTF8(*svp) ? -(I32)keylen : (I32)keylen, FALSE)) |
e75d1f10 RD |
8808 | { |
8809 | Perl_croak(aTHX_ "No such class field \"%s\" " | |
8810 | "in variable %s of type %s", | |
93524f2b | 8811 | key, SvPV_nolen_const(lexname), HvNAME_get(SvSTASH(lexname))); |
e75d1f10 RD |
8812 | } |
8813 | ||
6d822dc4 MS |
8814 | break; |
8815 | } | |
c750a3ec | 8816 | |
e75d1f10 RD |
8817 | case OP_HSLICE: { |
8818 | UNOP *rop; | |
8819 | SV *lexname; | |
8820 | GV **fields; | |
8821 | SV **svp; | |
93524f2b | 8822 | const char *key; |
e75d1f10 RD |
8823 | STRLEN keylen; |
8824 | SVOP *first_key_op, *key_op; | |
8825 | ||
8826 | if ((o->op_private & (OPpLVAL_INTRO)) | |
8827 | /* I bet there's always a pushmark... */ | |
8828 | || ((LISTOP*)o)->op_first->op_sibling->op_type != OP_LIST) | |
8829 | /* hmmm, no optimization if list contains only one key. */ | |
8830 | break; | |
8831 | rop = (UNOP*)((LISTOP*)o)->op_last; | |
8832 | if (rop->op_type != OP_RV2HV) | |
8833 | break; | |
8834 | if (rop->op_first->op_type == OP_PADSV) | |
8835 | /* @$hash{qw(keys here)} */ | |
8836 | rop = (UNOP*)rop->op_first; | |
8837 | else { | |
8838 | /* @{$hash}{qw(keys here)} */ | |
8839 | if (rop->op_first->op_type == OP_SCOPE | |
8840 | && cLISTOPx(rop->op_first)->op_last->op_type == OP_PADSV) | |
8841 | { | |
8842 | rop = (UNOP*)cLISTOPx(rop->op_first)->op_last; | |
8843 | } | |
8844 | else | |
8845 | break; | |
8846 | } | |
8847 | ||
8848 | lexname = *av_fetch(PL_comppad_name, rop->op_targ, TRUE); | |
00b1698f | 8849 | if (!SvPAD_TYPED(lexname)) |
e75d1f10 | 8850 | break; |
a4fc7abc | 8851 | fields = (GV**)hv_fetchs(SvSTASH(lexname), "FIELDS", FALSE); |
e75d1f10 RD |
8852 | if (!fields || !GvHV(*fields)) |
8853 | break; | |
8854 | /* Again guessing that the pushmark can be jumped over.... */ | |
8855 | first_key_op = (SVOP*)((LISTOP*)((LISTOP*)o)->op_first->op_sibling) | |
8856 | ->op_first->op_sibling; | |
8857 | for (key_op = first_key_op; key_op; | |
8858 | key_op = (SVOP*)key_op->op_sibling) { | |
8859 | if (key_op->op_type != OP_CONST) | |
8860 | continue; | |
8861 | svp = cSVOPx_svp(key_op); | |
93524f2b | 8862 | key = SvPV_const(*svp, keylen); |
e75d1f10 | 8863 | if (!hv_fetch(GvHV(*fields), key, |
bb7a0f54 | 8864 | SvUTF8(*svp) ? -(I32)keylen : (I32)keylen, FALSE)) |
e75d1f10 RD |
8865 | { |
8866 | Perl_croak(aTHX_ "No such class field \"%s\" " | |
8867 | "in variable %s of type %s", | |
bfcb3514 | 8868 | key, SvPV_nolen(lexname), HvNAME_get(SvSTASH(lexname))); |
e75d1f10 RD |
8869 | } |
8870 | } | |
8871 | break; | |
8872 | } | |
8873 | ||
fe1bc4cf | 8874 | case OP_SORT: { |
fe1bc4cf | 8875 | /* will point to RV2AV or PADAV op on LHS/RHS of assign */ |
551405c4 | 8876 | OP *oleft; |
fe1bc4cf DM |
8877 | OP *o2; |
8878 | ||
fe1bc4cf | 8879 | /* check that RHS of sort is a single plain array */ |
551405c4 | 8880 | OP *oright = cUNOPo->op_first; |
fe1bc4cf DM |
8881 | if (!oright || oright->op_type != OP_PUSHMARK) |
8882 | break; | |
471178c0 NC |
8883 | |
8884 | /* reverse sort ... can be optimised. */ | |
8885 | if (!cUNOPo->op_sibling) { | |
8886 | /* Nothing follows us on the list. */ | |
551405c4 | 8887 | OP * const reverse = o->op_next; |
471178c0 NC |
8888 | |
8889 | if (reverse->op_type == OP_REVERSE && | |
8890 | (reverse->op_flags & OPf_WANT) == OPf_WANT_LIST) { | |
551405c4 | 8891 | OP * const pushmark = cUNOPx(reverse)->op_first; |
471178c0 NC |
8892 | if (pushmark && (pushmark->op_type == OP_PUSHMARK) |
8893 | && (cUNOPx(pushmark)->op_sibling == o)) { | |
8894 | /* reverse -> pushmark -> sort */ | |
8895 | o->op_private |= OPpSORT_REVERSE; | |
8896 | op_null(reverse); | |
8897 | pushmark->op_next = oright->op_next; | |
8898 | op_null(oright); | |
8899 | } | |
8900 | } | |
8901 | } | |
8902 | ||
8903 | /* make @a = sort @a act in-place */ | |
8904 | ||
fe1bc4cf DM |
8905 | oright = cUNOPx(oright)->op_sibling; |
8906 | if (!oright) | |
8907 | break; | |
8908 | if (oright->op_type == OP_NULL) { /* skip sort block/sub */ | |
8909 | oright = cUNOPx(oright)->op_sibling; | |
8910 | } | |
8911 | ||
2f9e2db0 VP |
8912 | oleft = is_inplace_av(o, oright); |
8913 | if (!oleft) | |
fe1bc4cf DM |
8914 | break; |
8915 | ||
8916 | /* transfer MODishness etc from LHS arg to RHS arg */ | |
8917 | oright->op_flags = oleft->op_flags; | |
8918 | o->op_private |= OPpSORT_INPLACE; | |
8919 | ||
8920 | /* excise push->gv->rv2av->null->aassign */ | |
8921 | o2 = o->op_next->op_next; | |
8922 | op_null(o2); /* PUSHMARK */ | |
8923 | o2 = o2->op_next; | |
8924 | if (o2->op_type == OP_GV) { | |
8925 | op_null(o2); /* GV */ | |
8926 | o2 = o2->op_next; | |
8927 | } | |
8928 | op_null(o2); /* RV2AV or PADAV */ | |
8929 | o2 = o2->op_next->op_next; | |
8930 | op_null(o2); /* AASSIGN */ | |
8931 | ||
8932 | o->op_next = o2->op_next; | |
8933 | ||
8934 | break; | |
8935 | } | |
ef3e5ea9 NC |
8936 | |
8937 | case OP_REVERSE: { | |
e682d7b7 | 8938 | OP *ourmark, *theirmark, *ourlast, *iter, *expushmark, *rv2av; |
ce335f37 | 8939 | OP *gvop = NULL; |
484c818f | 8940 | OP *oleft, *oright; |
ef3e5ea9 | 8941 | LISTOP *enter, *exlist; |
ef3e5ea9 | 8942 | |
484c818f VP |
8943 | /* @a = reverse @a */ |
8944 | if ((oright = cLISTOPo->op_first) | |
8945 | && (oright->op_type == OP_PUSHMARK) | |
8946 | && (oright = oright->op_sibling) | |
8947 | && (oleft = is_inplace_av(o, oright))) { | |
8948 | OP *o2; | |
8949 | ||
8950 | /* transfer MODishness etc from LHS arg to RHS arg */ | |
8951 | oright->op_flags = oleft->op_flags; | |
8952 | o->op_private |= OPpREVERSE_INPLACE; | |
8953 | ||
8954 | /* excise push->gv->rv2av->null->aassign */ | |
8955 | o2 = o->op_next->op_next; | |
8956 | op_null(o2); /* PUSHMARK */ | |
8957 | o2 = o2->op_next; | |
8958 | if (o2->op_type == OP_GV) { | |
8959 | op_null(o2); /* GV */ | |
8960 | o2 = o2->op_next; | |
8961 | } | |
8962 | op_null(o2); /* RV2AV or PADAV */ | |
8963 | o2 = o2->op_next->op_next; | |
8964 | op_null(o2); /* AASSIGN */ | |
8965 | ||
8966 | o->op_next = o2->op_next; | |
8967 | break; | |
8968 | } | |
8969 | ||
ef3e5ea9 NC |
8970 | enter = (LISTOP *) o->op_next; |
8971 | if (!enter) | |
8972 | break; | |
8973 | if (enter->op_type == OP_NULL) { | |
8974 | enter = (LISTOP *) enter->op_next; | |
8975 | if (!enter) | |
8976 | break; | |
8977 | } | |
d46f46af NC |
8978 | /* for $a (...) will have OP_GV then OP_RV2GV here. |
8979 | for (...) just has an OP_GV. */ | |
ce335f37 NC |
8980 | if (enter->op_type == OP_GV) { |
8981 | gvop = (OP *) enter; | |
8982 | enter = (LISTOP *) enter->op_next; | |
8983 | if (!enter) | |
8984 | break; | |
d46f46af NC |
8985 | if (enter->op_type == OP_RV2GV) { |
8986 | enter = (LISTOP *) enter->op_next; | |
8987 | if (!enter) | |
ce335f37 | 8988 | break; |
d46f46af | 8989 | } |
ce335f37 NC |
8990 | } |
8991 | ||
ef3e5ea9 NC |
8992 | if (enter->op_type != OP_ENTERITER) |
8993 | break; | |
8994 | ||
8995 | iter = enter->op_next; | |
8996 | if (!iter || iter->op_type != OP_ITER) | |
8997 | break; | |
8998 | ||
ce335f37 NC |
8999 | expushmark = enter->op_first; |
9000 | if (!expushmark || expushmark->op_type != OP_NULL | |
9001 | || expushmark->op_targ != OP_PUSHMARK) | |
9002 | break; | |
9003 | ||
9004 | exlist = (LISTOP *) expushmark->op_sibling; | |
ef3e5ea9 NC |
9005 | if (!exlist || exlist->op_type != OP_NULL |
9006 | || exlist->op_targ != OP_LIST) | |
9007 | break; | |
9008 | ||
9009 | if (exlist->op_last != o) { | |
9010 | /* Mmm. Was expecting to point back to this op. */ | |
9011 | break; | |
9012 | } | |
9013 | theirmark = exlist->op_first; | |
9014 | if (!theirmark || theirmark->op_type != OP_PUSHMARK) | |
9015 | break; | |
9016 | ||
c491ecac | 9017 | if (theirmark->op_sibling != o) { |
ef3e5ea9 NC |
9018 | /* There's something between the mark and the reverse, eg |
9019 | for (1, reverse (...)) | |
9020 | so no go. */ | |
9021 | break; | |
9022 | } | |
9023 | ||
c491ecac NC |
9024 | ourmark = ((LISTOP *)o)->op_first; |
9025 | if (!ourmark || ourmark->op_type != OP_PUSHMARK) | |
9026 | break; | |
9027 | ||
ef3e5ea9 NC |
9028 | ourlast = ((LISTOP *)o)->op_last; |
9029 | if (!ourlast || ourlast->op_next != o) | |
9030 | break; | |
9031 | ||
e682d7b7 NC |
9032 | rv2av = ourmark->op_sibling; |
9033 | if (rv2av && rv2av->op_type == OP_RV2AV && rv2av->op_sibling == 0 | |
9034 | && rv2av->op_flags == (OPf_WANT_LIST | OPf_KIDS) | |
9035 | && enter->op_flags == (OPf_WANT_LIST | OPf_KIDS)) { | |
9036 | /* We're just reversing a single array. */ | |
9037 | rv2av->op_flags = OPf_WANT_SCALAR | OPf_KIDS | OPf_REF; | |
9038 | enter->op_flags |= OPf_STACKED; | |
9039 | } | |
9040 | ||
ef3e5ea9 NC |
9041 | /* We don't have control over who points to theirmark, so sacrifice |
9042 | ours. */ | |
9043 | theirmark->op_next = ourmark->op_next; | |
9044 | theirmark->op_flags = ourmark->op_flags; | |
ce335f37 | 9045 | ourlast->op_next = gvop ? gvop : (OP *) enter; |
ef3e5ea9 NC |
9046 | op_null(ourmark); |
9047 | op_null(o); | |
9048 | enter->op_private |= OPpITER_REVERSED; | |
9049 | iter->op_private |= OPpITER_REVERSED; | |
9050 | ||
9051 | break; | |
9052 | } | |
e26df76a NC |
9053 | |
9054 | case OP_SASSIGN: { | |
9055 | OP *rv2gv; | |
9056 | UNOP *refgen, *rv2cv; | |
9057 | LISTOP *exlist; | |
9058 | ||
50baa5ea | 9059 | if ((o->op_flags & OPf_WANT) != OPf_WANT_VOID) |
de3370bc NC |
9060 | break; |
9061 | ||
e26df76a NC |
9062 | if ((o->op_private & ~OPpASSIGN_BACKWARDS) != 2) |
9063 | break; | |
9064 | ||
9065 | rv2gv = ((BINOP *)o)->op_last; | |
9066 | if (!rv2gv || rv2gv->op_type != OP_RV2GV) | |
9067 | break; | |
9068 | ||
9069 | refgen = (UNOP *)((BINOP *)o)->op_first; | |
9070 | ||
9071 | if (!refgen || refgen->op_type != OP_REFGEN) | |
9072 | break; | |
9073 | ||
9074 | exlist = (LISTOP *)refgen->op_first; | |
9075 | if (!exlist || exlist->op_type != OP_NULL | |
9076 | || exlist->op_targ != OP_LIST) | |
9077 | break; | |
9078 | ||
9079 | if (exlist->op_first->op_type != OP_PUSHMARK) | |
9080 | break; | |
9081 | ||
9082 | rv2cv = (UNOP*)exlist->op_last; | |
9083 | ||
9084 | if (rv2cv->op_type != OP_RV2CV) | |
9085 | break; | |
9086 | ||
9087 | assert ((rv2gv->op_private & OPpDONT_INIT_GV) == 0); | |
9088 | assert ((o->op_private & OPpASSIGN_CV_TO_GV) == 0); | |
9089 | assert ((rv2cv->op_private & OPpMAY_RETURN_CONSTANT) == 0); | |
9090 | ||
9091 | o->op_private |= OPpASSIGN_CV_TO_GV; | |
9092 | rv2gv->op_private |= OPpDONT_INIT_GV; | |
9093 | rv2cv->op_private |= OPpMAY_RETURN_CONSTANT; | |
9094 | ||
9095 | break; | |
9096 | } | |
9097 | ||
fe1bc4cf | 9098 | |
0477511c NC |
9099 | case OP_QR: |
9100 | case OP_MATCH: | |
29f2e912 NC |
9101 | if (!(cPMOP->op_pmflags & PMf_ONCE)) { |
9102 | assert (!cPMOP->op_pmstashstartu.op_pmreplstart); | |
9103 | } | |
79072805 LW |
9104 | break; |
9105 | } | |
a0d0e21e | 9106 | oldop = o; |
79072805 | 9107 | } |
a0d0e21e | 9108 | LEAVE; |
79072805 | 9109 | } |
beab0874 | 9110 | |
cef6ea9d | 9111 | const char* |
1cb0ed9b | 9112 | Perl_custom_op_name(pTHX_ const OP* o) |
53e06cf0 | 9113 | { |
97aff369 | 9114 | dVAR; |
e1ec3a88 | 9115 | const IV index = PTR2IV(o->op_ppaddr); |
53e06cf0 SC |
9116 | SV* keysv; |
9117 | HE* he; | |
9118 | ||
7918f24d NC |
9119 | PERL_ARGS_ASSERT_CUSTOM_OP_NAME; |
9120 | ||
53e06cf0 | 9121 | if (!PL_custom_op_names) /* This probably shouldn't happen */ |
27da23d5 | 9122 | return (char *)PL_op_name[OP_CUSTOM]; |
53e06cf0 SC |
9123 | |
9124 | keysv = sv_2mortal(newSViv(index)); | |
9125 | ||
9126 | he = hv_fetch_ent(PL_custom_op_names, keysv, 0, 0); | |
9127 | if (!he) | |
27da23d5 | 9128 | return (char *)PL_op_name[OP_CUSTOM]; /* Don't know who you are */ |
53e06cf0 SC |
9129 | |
9130 | return SvPV_nolen(HeVAL(he)); | |
9131 | } | |
9132 | ||
cef6ea9d | 9133 | const char* |
1cb0ed9b | 9134 | Perl_custom_op_desc(pTHX_ const OP* o) |
53e06cf0 | 9135 | { |
97aff369 | 9136 | dVAR; |
e1ec3a88 | 9137 | const IV index = PTR2IV(o->op_ppaddr); |
53e06cf0 SC |
9138 | SV* keysv; |
9139 | HE* he; | |
9140 | ||
7918f24d NC |
9141 | PERL_ARGS_ASSERT_CUSTOM_OP_DESC; |
9142 | ||
53e06cf0 | 9143 | if (!PL_custom_op_descs) |
27da23d5 | 9144 | return (char *)PL_op_desc[OP_CUSTOM]; |
53e06cf0 SC |
9145 | |
9146 | keysv = sv_2mortal(newSViv(index)); | |
9147 | ||
9148 | he = hv_fetch_ent(PL_custom_op_descs, keysv, 0, 0); | |
9149 | if (!he) | |
27da23d5 | 9150 | return (char *)PL_op_desc[OP_CUSTOM]; |
53e06cf0 SC |
9151 | |
9152 | return SvPV_nolen(HeVAL(he)); | |
9153 | } | |
19e8ce8e | 9154 | |
beab0874 JT |
9155 | #include "XSUB.h" |
9156 | ||
9157 | /* Efficient sub that returns a constant scalar value. */ | |
9158 | static void | |
acfe0abc | 9159 | const_sv_xsub(pTHX_ CV* cv) |
beab0874 | 9160 | { |
97aff369 | 9161 | dVAR; |
beab0874 | 9162 | dXSARGS; |
99ab892b | 9163 | SV *const sv = MUTABLE_SV(XSANY.any_ptr); |
9cbac4c7 | 9164 | if (items != 0) { |
6f207bd3 | 9165 | NOOP; |
9cbac4c7 | 9166 | #if 0 |
fe13d51d | 9167 | /* diag_listed_as: SKIPME */ |
9cbac4c7 | 9168 | Perl_croak(aTHX_ "usage: %s::%s()", |
bfcb3514 | 9169 | HvNAME_get(GvSTASH(CvGV(cv))), GvNAME(CvGV(cv))); |
9cbac4c7 DM |
9170 | #endif |
9171 | } | |
99ab892b NC |
9172 | if (!sv) { |
9173 | XSRETURN(0); | |
9174 | } | |
9a049f1c | 9175 | EXTEND(sp, 1); |
99ab892b | 9176 | ST(0) = sv; |
beab0874 JT |
9177 | XSRETURN(1); |
9178 | } | |
4946a0fa NC |
9179 | |
9180 | /* | |
9181 | * Local variables: | |
9182 | * c-indentation-style: bsd | |
9183 | * c-basic-offset: 4 | |
9184 | * indent-tabs-mode: t | |
9185 | * End: | |
9186 | * | |
37442d52 RGS |
9187 | * ex: set ts=8 sts=4 sw=4 noet: |
9188 | */ |