Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* op.c |
79072805 | 2 | * |
4bb101f2 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
bc641c27 | 4 | * 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, by Larry Wall and others |
79072805 LW |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public | |
7 | * License or the Artistic License, as specified in the README file. | |
8 | * | |
a0d0e21e LW |
9 | */ |
10 | ||
11 | /* | |
12 | * "You see: Mr. Drogo, he married poor Miss Primula Brandybuck. She was | |
13 | * our Mr. Bilbo's first cousin on the mother's side (her mother being the | |
14 | * youngest of the Old Took's daughters); and Mr. Drogo was his second | |
15 | * cousin. So Mr. Frodo is his first *and* second cousin, once removed | |
16 | * either way, as the saying is, if you follow me." --the Gaffer | |
79072805 LW |
17 | */ |
18 | ||
166f8a29 DM |
19 | /* This file contains the functions that create, manipulate and optimize |
20 | * the OP structures that hold a compiled perl program. | |
21 | * | |
22 | * A Perl program is compiled into a tree of OPs. Each op contains | |
23 | * structural pointers (eg to its siblings and the next op in the | |
24 | * execution sequence), a pointer to the function that would execute the | |
25 | * op, plus any data specific to that op. For example, an OP_CONST op | |
26 | * points to the pp_const() function and to an SV containing the constant | |
27 | * value. When pp_const() is executed, its job is to push that SV onto the | |
28 | * stack. | |
29 | * | |
30 | * OPs are mainly created by the newFOO() functions, which are mainly | |
31 | * called from the parser (in perly.y) as the code is parsed. For example | |
32 | * the Perl code $a + $b * $c would cause the equivalent of the following | |
33 | * to be called (oversimplifying a bit): | |
34 | * | |
35 | * newBINOP(OP_ADD, flags, | |
36 | * newSVREF($a), | |
37 | * newBINOP(OP_MULTIPLY, flags, newSVREF($b), newSVREF($c)) | |
38 | * ) | |
39 | * | |
40 | * Note that during the build of miniperl, a temporary copy of this file | |
41 | * is made, called opmini.c. | |
42 | */ | |
ccfc67b7 | 43 | |
61b743bb DM |
44 | /* |
45 | Perl's compiler is essentially a 3-pass compiler with interleaved phases: | |
46 | ||
47 | A bottom-up pass | |
48 | A top-down pass | |
49 | An execution-order pass | |
50 | ||
51 | The bottom-up pass is represented by all the "newOP" routines and | |
52 | the ck_ routines. The bottom-upness is actually driven by yacc. | |
53 | So at the point that a ck_ routine fires, we have no idea what the | |
54 | context is, either upward in the syntax tree, or either forward or | |
55 | backward in the execution order. (The bottom-up parser builds that | |
56 | part of the execution order it knows about, but if you follow the "next" | |
57 | links around, you'll find it's actually a closed loop through the | |
58 | top level node. | |
59 | ||
60 | Whenever the bottom-up parser gets to a node that supplies context to | |
61 | its components, it invokes that portion of the top-down pass that applies | |
62 | to that part of the subtree (and marks the top node as processed, so | |
63 | if a node further up supplies context, it doesn't have to take the | |
64 | plunge again). As a particular subcase of this, as the new node is | |
65 | built, it takes all the closed execution loops of its subcomponents | |
66 | and links them into a new closed loop for the higher level node. But | |
67 | it's still not the real execution order. | |
68 | ||
69 | The actual execution order is not known till we get a grammar reduction | |
70 | to a top-level unit like a subroutine or file that will be called by | |
71 | "name" rather than via a "next" pointer. At that point, we can call | |
72 | into peep() to do that code's portion of the 3rd pass. It has to be | |
73 | recursive, but it's recursive on basic blocks, not on tree nodes. | |
74 | */ | |
75 | ||
06e0342d | 76 | /* To implement user lexical pragmas, there needs to be a way at run time to |
b3ca2e83 NC |
77 | get the compile time state of %^H for that block. Storing %^H in every |
78 | block (or even COP) would be very expensive, so a different approach is | |
79 | taken. The (running) state of %^H is serialised into a tree of HE-like | |
80 | structs. Stores into %^H are chained onto the current leaf as a struct | |
81 | refcounted_he * with the key and the value. Deletes from %^H are saved | |
82 | with a value of PL_sv_placeholder. The state of %^H at any point can be | |
83 | turned back into a regular HV by walking back up the tree from that point's | |
06e0342d | 84 | leaf, ignoring any key you've already seen (placeholder or not), storing |
b3ca2e83 NC |
85 | the rest into the HV structure, then removing the placeholders. Hence |
86 | memory is only used to store the %^H deltas from the enclosing COP, rather | |
87 | than the entire %^H on each COP. | |
88 | ||
89 | To cause actions on %^H to write out the serialisation records, it has | |
90 | magic type 'H'. This magic (itself) does nothing, but its presence causes | |
91 | the values to gain magic type 'h', which has entries for set and clear. | |
c28fe1ec | 92 | C<Perl_magic_sethint> updates C<PL_compiling.cop_hints_hash> with a store |
b3ca2e83 | 93 | record, with deletes written by C<Perl_magic_clearhint>. C<SAVE_HINTS> |
c28fe1ec NC |
94 | saves the current C<PL_compiling.cop_hints_hash> on the save stack, so that |
95 | it will be correctly restored when any inner compiling scope is exited. | |
b3ca2e83 NC |
96 | */ |
97 | ||
79072805 | 98 | #include "EXTERN.h" |
864dbfa3 | 99 | #define PERL_IN_OP_C |
79072805 | 100 | #include "perl.h" |
77ca0c92 | 101 | #include "keywords.h" |
79072805 | 102 | |
a07e034d | 103 | #define CALL_PEEP(o) CALL_FPTR(PL_peepp)(aTHX_ o) |
a2efc822 | 104 | |
238a4c30 NIS |
105 | #if defined(PL_OP_SLAB_ALLOC) |
106 | ||
f1fac472 NC |
107 | #ifdef PERL_DEBUG_READONLY_OPS |
108 | # define PERL_SLAB_SIZE 4096 | |
109 | # include <sys/mman.h> | |
110 | #endif | |
111 | ||
238a4c30 NIS |
112 | #ifndef PERL_SLAB_SIZE |
113 | #define PERL_SLAB_SIZE 2048 | |
114 | #endif | |
115 | ||
c7e45529 | 116 | void * |
e91d68d5 | 117 | Perl_Slab_Alloc(pTHX_ size_t sz) |
1c846c1f | 118 | { |
5186cc12 | 119 | dVAR; |
5a8e194f NIS |
120 | /* |
121 | * To make incrementing use count easy PL_OpSlab is an I32 * | |
122 | * To make inserting the link to slab PL_OpPtr is I32 ** | |
123 | * So compute size in units of sizeof(I32 *) as that is how Pl_OpPtr increments | |
124 | * Add an overhead for pointer to slab and round up as a number of pointers | |
125 | */ | |
126 | sz = (sz + 2*sizeof(I32 *) -1)/sizeof(I32 *); | |
238a4c30 | 127 | if ((PL_OpSpace -= sz) < 0) { |
f1fac472 NC |
128 | #ifdef PERL_DEBUG_READONLY_OPS |
129 | /* We need to allocate chunk by chunk so that we can control the VM | |
130 | mapping */ | |
5186cc12 | 131 | PL_OpPtr = (I32**) mmap(0, PERL_SLAB_SIZE*sizeof(I32*), PROT_READ|PROT_WRITE, |
f1fac472 NC |
132 | MAP_ANON|MAP_PRIVATE, -1, 0); |
133 | ||
134 | DEBUG_m(PerlIO_printf(Perl_debug_log, "mapped %lu at %p\n", | |
135 | (unsigned long) PERL_SLAB_SIZE*sizeof(I32*), | |
136 | PL_OpPtr)); | |
137 | if(PL_OpPtr == MAP_FAILED) { | |
138 | perror("mmap failed"); | |
139 | abort(); | |
140 | } | |
141 | #else | |
277e868c NC |
142 | |
143 | PL_OpPtr = (I32 **) PerlMemShared_calloc(PERL_SLAB_SIZE,sizeof(I32*)); | |
f1fac472 | 144 | #endif |
083fcd59 | 145 | if (!PL_OpPtr) { |
238a4c30 NIS |
146 | return NULL; |
147 | } | |
5a8e194f NIS |
148 | /* We reserve the 0'th I32 sized chunk as a use count */ |
149 | PL_OpSlab = (I32 *) PL_OpPtr; | |
150 | /* Reduce size by the use count word, and by the size we need. | |
151 | * Latter is to mimic the '-=' in the if() above | |
152 | */ | |
153 | PL_OpSpace = PERL_SLAB_SIZE - (sizeof(I32)+sizeof(I32 **)-1)/sizeof(I32 **) - sz; | |
238a4c30 NIS |
154 | /* Allocation pointer starts at the top. |
155 | Theory: because we build leaves before trunk allocating at end | |
156 | means that at run time access is cache friendly upward | |
157 | */ | |
5a8e194f | 158 | PL_OpPtr += PERL_SLAB_SIZE; |
f1fac472 NC |
159 | |
160 | #ifdef PERL_DEBUG_READONLY_OPS | |
161 | /* We remember this slab. */ | |
162 | /* This implementation isn't efficient, but it is simple. */ | |
5186cc12 | 163 | PL_slabs = (I32**) realloc(PL_slabs, sizeof(I32**) * (PL_slab_count + 1)); |
f1fac472 NC |
164 | PL_slabs[PL_slab_count++] = PL_OpSlab; |
165 | DEBUG_m(PerlIO_printf(Perl_debug_log, "Allocate %p\n", PL_OpSlab)); | |
166 | #endif | |
238a4c30 NIS |
167 | } |
168 | assert( PL_OpSpace >= 0 ); | |
169 | /* Move the allocation pointer down */ | |
170 | PL_OpPtr -= sz; | |
5a8e194f | 171 | assert( PL_OpPtr > (I32 **) PL_OpSlab ); |
238a4c30 NIS |
172 | *PL_OpPtr = PL_OpSlab; /* Note which slab it belongs to */ |
173 | (*PL_OpSlab)++; /* Increment use count of slab */ | |
5a8e194f | 174 | assert( PL_OpPtr+sz <= ((I32 **) PL_OpSlab + PERL_SLAB_SIZE) ); |
238a4c30 NIS |
175 | assert( *PL_OpSlab > 0 ); |
176 | return (void *)(PL_OpPtr + 1); | |
177 | } | |
178 | ||
f1fac472 NC |
179 | #ifdef PERL_DEBUG_READONLY_OPS |
180 | void | |
181 | Perl_pending_Slabs_to_ro(pTHX) { | |
182 | /* Turn all the allocated op slabs read only. */ | |
183 | U32 count = PL_slab_count; | |
184 | I32 **const slabs = PL_slabs; | |
185 | ||
186 | /* Reset the array of pending OP slabs, as we're about to turn this lot | |
187 | read only. Also, do it ahead of the loop in case the warn triggers, | |
188 | and a warn handler has an eval */ | |
189 | ||
f1fac472 NC |
190 | PL_slabs = NULL; |
191 | PL_slab_count = 0; | |
192 | ||
193 | /* Force a new slab for any further allocation. */ | |
194 | PL_OpSpace = 0; | |
195 | ||
196 | while (count--) { | |
5892a4d4 | 197 | void *const start = slabs[count]; |
f1fac472 NC |
198 | const size_t size = PERL_SLAB_SIZE* sizeof(I32*); |
199 | if(mprotect(start, size, PROT_READ)) { | |
200 | Perl_warn(aTHX_ "mprotect for %p %lu failed with %d", | |
201 | start, (unsigned long) size, errno); | |
202 | } | |
203 | } | |
5892a4d4 NC |
204 | |
205 | free(slabs); | |
f1fac472 NC |
206 | } |
207 | ||
208 | STATIC void | |
209 | S_Slab_to_rw(pTHX_ void *op) | |
210 | { | |
211 | I32 * const * const ptr = (I32 **) op; | |
212 | I32 * const slab = ptr[-1]; | |
213 | assert( ptr-1 > (I32 **) slab ); | |
214 | assert( ptr < ( (I32 **) slab + PERL_SLAB_SIZE) ); | |
215 | assert( *slab > 0 ); | |
216 | if(mprotect(slab, PERL_SLAB_SIZE*sizeof(I32*), PROT_READ|PROT_WRITE)) { | |
217 | Perl_warn(aTHX_ "mprotect RW for %p %lu failed with %d", | |
218 | slab, (unsigned long) PERL_SLAB_SIZE*sizeof(I32*), errno); | |
219 | } | |
220 | } | |
fc97af9c NC |
221 | |
222 | OP * | |
223 | Perl_op_refcnt_inc(pTHX_ OP *o) | |
224 | { | |
225 | if(o) { | |
226 | Slab_to_rw(o); | |
227 | ++o->op_targ; | |
228 | } | |
229 | return o; | |
230 | ||
231 | } | |
232 | ||
233 | PADOFFSET | |
234 | Perl_op_refcnt_dec(pTHX_ OP *o) | |
235 | { | |
236 | Slab_to_rw(o); | |
237 | return --o->op_targ; | |
238 | } | |
f1fac472 NC |
239 | #else |
240 | # define Slab_to_rw(op) | |
241 | #endif | |
242 | ||
c7e45529 AE |
243 | void |
244 | Perl_Slab_Free(pTHX_ void *op) | |
238a4c30 | 245 | { |
551405c4 | 246 | I32 * const * const ptr = (I32 **) op; |
aec46f14 | 247 | I32 * const slab = ptr[-1]; |
5a8e194f NIS |
248 | assert( ptr-1 > (I32 **) slab ); |
249 | assert( ptr < ( (I32 **) slab + PERL_SLAB_SIZE) ); | |
238a4c30 | 250 | assert( *slab > 0 ); |
f1fac472 | 251 | Slab_to_rw(op); |
238a4c30 | 252 | if (--(*slab) == 0) { |
7e4e8c89 NC |
253 | # ifdef NETWARE |
254 | # define PerlMemShared PerlMem | |
255 | # endif | |
083fcd59 | 256 | |
f1fac472 | 257 | #ifdef PERL_DEBUG_READONLY_OPS |
782a40f1 | 258 | U32 count = PL_slab_count; |
f1fac472 | 259 | /* Need to remove this slab from our list of slabs */ |
782a40f1 | 260 | if (count) { |
f1fac472 NC |
261 | while (count--) { |
262 | if (PL_slabs[count] == slab) { | |
5186cc12 | 263 | dVAR; |
f1fac472 NC |
264 | /* Found it. Move the entry at the end to overwrite it. */ |
265 | DEBUG_m(PerlIO_printf(Perl_debug_log, | |
266 | "Deallocate %p by moving %p from %lu to %lu\n", | |
267 | PL_OpSlab, | |
268 | PL_slabs[PL_slab_count - 1], | |
269 | PL_slab_count, count)); | |
270 | PL_slabs[count] = PL_slabs[--PL_slab_count]; | |
271 | /* Could realloc smaller at this point, but probably not | |
272 | worth it. */ | |
fc97af9c NC |
273 | if(munmap(slab, PERL_SLAB_SIZE*sizeof(I32*))) { |
274 | perror("munmap failed"); | |
275 | abort(); | |
276 | } | |
277 | break; | |
f1fac472 | 278 | } |
f1fac472 NC |
279 | } |
280 | } | |
281 | #else | |
083fcd59 | 282 | PerlMemShared_free(slab); |
f1fac472 | 283 | #endif |
238a4c30 NIS |
284 | if (slab == PL_OpSlab) { |
285 | PL_OpSpace = 0; | |
286 | } | |
287 | } | |
b7dc083c | 288 | } |
b7dc083c | 289 | #endif |
e50aee73 | 290 | /* |
ce6f1cbc | 291 | * In the following definition, the ", (OP*)0" is just to make the compiler |
a5f75d66 | 292 | * think the expression is of the right type: croak actually does a Siglongjmp. |
e50aee73 | 293 | */ |
11343788 | 294 | #define CHECKOP(type,o) \ |
ce6f1cbc | 295 | ((PL_op_mask && PL_op_mask[type]) \ |
5dc0d613 | 296 | ? ( op_free((OP*)o), \ |
cb77fdf0 | 297 | Perl_croak(aTHX_ "'%s' trapped by operation mask", PL_op_desc[type]), \ |
ce6f1cbc | 298 | (OP*)0 ) \ |
fc0dc3b3 | 299 | : CALL_FPTR(PL_check[type])(aTHX_ (OP*)o)) |
e50aee73 | 300 | |
e6438c1a | 301 | #define RETURN_UNLIMITED_NUMBER (PERL_INT_MAX / 2) |
c53d7c7d | 302 | |
8b6b16e7 | 303 | STATIC const char* |
cea2e8a9 | 304 | S_gv_ename(pTHX_ GV *gv) |
4633a7c4 | 305 | { |
46c461b5 | 306 | SV* const tmpsv = sv_newmortal(); |
bd61b366 | 307 | gv_efullname3(tmpsv, gv, NULL); |
8b6b16e7 | 308 | return SvPV_nolen_const(tmpsv); |
4633a7c4 LW |
309 | } |
310 | ||
76e3520e | 311 | STATIC OP * |
cea2e8a9 | 312 | S_no_fh_allowed(pTHX_ OP *o) |
79072805 | 313 | { |
cea2e8a9 | 314 | yyerror(Perl_form(aTHX_ "Missing comma after first argument to %s function", |
53e06cf0 | 315 | OP_DESC(o))); |
11343788 | 316 | return o; |
79072805 LW |
317 | } |
318 | ||
76e3520e | 319 | STATIC OP * |
bfed75c6 | 320 | S_too_few_arguments(pTHX_ OP *o, const char *name) |
79072805 | 321 | { |
cea2e8a9 | 322 | yyerror(Perl_form(aTHX_ "Not enough arguments for %s", name)); |
11343788 | 323 | return o; |
79072805 LW |
324 | } |
325 | ||
76e3520e | 326 | STATIC OP * |
bfed75c6 | 327 | S_too_many_arguments(pTHX_ OP *o, const char *name) |
79072805 | 328 | { |
cea2e8a9 | 329 | yyerror(Perl_form(aTHX_ "Too many arguments for %s", name)); |
11343788 | 330 | return o; |
79072805 LW |
331 | } |
332 | ||
76e3520e | 333 | STATIC void |
6867be6d | 334 | S_bad_type(pTHX_ I32 n, const char *t, const char *name, const OP *kid) |
8990e307 | 335 | { |
cea2e8a9 | 336 | yyerror(Perl_form(aTHX_ "Type of arg %d to %s must be %s (not %s)", |
53e06cf0 | 337 | (int)n, name, t, OP_DESC(kid))); |
8990e307 LW |
338 | } |
339 | ||
7a52d87a | 340 | STATIC void |
6867be6d | 341 | S_no_bareword_allowed(pTHX_ const OP *o) |
7a52d87a | 342 | { |
eb8433b7 NC |
343 | if (PL_madskills) |
344 | return; /* various ok barewords are hidden in extra OP_NULL */ | |
5a844595 | 345 | qerror(Perl_mess(aTHX_ |
35c1215d | 346 | "Bareword \"%"SVf"\" not allowed while \"strict subs\" in use", |
be2597df | 347 | SVfARG(cSVOPo_sv))); |
7a52d87a GS |
348 | } |
349 | ||
79072805 LW |
350 | /* "register" allocation */ |
351 | ||
352 | PADOFFSET | |
262cbcdb | 353 | Perl_allocmy(pTHX_ const char *const name) |
93a17b20 | 354 | { |
97aff369 | 355 | dVAR; |
a0d0e21e | 356 | PADOFFSET off; |
12bd6ede | 357 | const bool is_our = (PL_parser->in_my == KEY_our); |
a0d0e21e | 358 | |
59f00321 | 359 | /* complain about "my $<special_var>" etc etc */ |
6b58708b | 360 | if (*name && |
3edf23ff | 361 | !(is_our || |
155aba94 | 362 | isALPHA(name[1]) || |
39e02b42 | 363 | (USE_UTF8_IN_NAMES && UTF8_IS_START(name[1])) || |
6b58708b | 364 | (name[1] == '_' && (*name == '$' || name[2])))) |
834a4ddd | 365 | { |
6b58708b | 366 | /* name[2] is true if strlen(name) > 2 */ |
c4d0567e | 367 | if (!isPRINT(name[1]) || strchr("\t\n\r\f", name[1])) { |
aab6a793 NC |
368 | yyerror(Perl_form(aTHX_ "Can't use global %c^%c%s in \"%s\"", |
369 | name[0], toCTRL(name[1]), name + 2, | |
370 | PL_parser->in_my == KEY_state ? "state" : "my")); | |
d1544d85 | 371 | } else { |
aab6a793 NC |
372 | yyerror(Perl_form(aTHX_ "Can't use global %s in \"%s\"",name, |
373 | PL_parser->in_my == KEY_state ? "state" : "my")); | |
46fc3d4c | 374 | } |
a0d0e21e | 375 | } |
748a9306 | 376 | |
dd2155a4 | 377 | /* check for duplicate declaration */ |
3edf23ff | 378 | pad_check_dup(name, is_our, (PL_curstash ? PL_curstash : PL_defstash)); |
33b8ce05 | 379 | |
12bd6ede | 380 | if (PL_parser->in_my_stash && *name != '$') { |
dd2155a4 DM |
381 | yyerror(Perl_form(aTHX_ |
382 | "Can't declare class for non-scalar %s in \"%s\"", | |
952306ac | 383 | name, |
12bd6ede DM |
384 | is_our ? "our" |
385 | : PL_parser->in_my == KEY_state ? "state" : "my")); | |
6b35e009 GS |
386 | } |
387 | ||
dd2155a4 | 388 | /* allocate a spare slot and store the name in that slot */ |
93a17b20 | 389 | |
dd2155a4 | 390 | off = pad_add_name(name, |
12bd6ede | 391 | PL_parser->in_my_stash, |
3edf23ff | 392 | (is_our |
133706a6 RGS |
393 | /* $_ is always in main::, even with our */ |
394 | ? (PL_curstash && !strEQ(name,"$_") ? PL_curstash : PL_defstash) | |
5c284bb0 | 395 | : NULL |
dd2155a4 | 396 | ), |
952306ac | 397 | 0, /* not fake */ |
12bd6ede | 398 | PL_parser->in_my == KEY_state |
dd2155a4 | 399 | ); |
a74073ad DM |
400 | /* anon sub prototypes contains state vars should always be cloned, |
401 | * otherwise the state var would be shared between anon subs */ | |
402 | ||
403 | if (PL_parser->in_my == KEY_state && CvANON(PL_compcv)) | |
404 | CvCLONE_on(PL_compcv); | |
405 | ||
dd2155a4 | 406 | return off; |
79072805 LW |
407 | } |
408 | ||
d2c837a0 DM |
409 | /* free the body of an op without examining its contents. |
410 | * Always use this rather than FreeOp directly */ | |
411 | ||
4136a0f7 | 412 | static void |
d2c837a0 DM |
413 | S_op_destroy(pTHX_ OP *o) |
414 | { | |
415 | if (o->op_latefree) { | |
416 | o->op_latefreed = 1; | |
417 | return; | |
418 | } | |
419 | FreeOp(o); | |
420 | } | |
421 | ||
c4bd3ae5 NC |
422 | #ifdef USE_ITHREADS |
423 | # define forget_pmop(a,b) S_forget_pmop(aTHX_ a,b) | |
424 | #else | |
425 | # define forget_pmop(a,b) S_forget_pmop(aTHX_ a) | |
426 | #endif | |
d2c837a0 | 427 | |
79072805 LW |
428 | /* Destructor */ |
429 | ||
430 | void | |
864dbfa3 | 431 | Perl_op_free(pTHX_ OP *o) |
79072805 | 432 | { |
27da23d5 | 433 | dVAR; |
acb36ea4 | 434 | OPCODE type; |
79072805 | 435 | |
85594c31 | 436 | if (!o) |
79072805 | 437 | return; |
670f3923 DM |
438 | if (o->op_latefreed) { |
439 | if (o->op_latefree) | |
440 | return; | |
441 | goto do_free; | |
442 | } | |
79072805 | 443 | |
67566ccd | 444 | type = o->op_type; |
7934575e | 445 | if (o->op_private & OPpREFCOUNTED) { |
67566ccd | 446 | switch (type) { |
7934575e GS |
447 | case OP_LEAVESUB: |
448 | case OP_LEAVESUBLV: | |
449 | case OP_LEAVEEVAL: | |
450 | case OP_LEAVE: | |
451 | case OP_SCOPE: | |
452 | case OP_LEAVEWRITE: | |
67566ccd AL |
453 | { |
454 | PADOFFSET refcnt; | |
7934575e | 455 | OP_REFCNT_LOCK; |
4026c95a | 456 | refcnt = OpREFCNT_dec(o); |
7934575e | 457 | OP_REFCNT_UNLOCK; |
bfd0ff22 NC |
458 | if (refcnt) { |
459 | /* Need to find and remove any pattern match ops from the list | |
460 | we maintain for reset(). */ | |
461 | find_and_forget_pmops(o); | |
4026c95a | 462 | return; |
67566ccd | 463 | } |
bfd0ff22 | 464 | } |
7934575e GS |
465 | break; |
466 | default: | |
467 | break; | |
468 | } | |
469 | } | |
470 | ||
11343788 | 471 | if (o->op_flags & OPf_KIDS) { |
6867be6d | 472 | register OP *kid, *nextkid; |
11343788 | 473 | for (kid = cUNOPo->op_first; kid; kid = nextkid) { |
85e6fe83 | 474 | nextkid = kid->op_sibling; /* Get before next freeing kid */ |
79072805 | 475 | op_free(kid); |
85e6fe83 | 476 | } |
79072805 | 477 | } |
acb36ea4 | 478 | if (type == OP_NULL) |
eb160463 | 479 | type = (OPCODE)o->op_targ; |
acb36ea4 | 480 | |
fc97af9c NC |
481 | #ifdef PERL_DEBUG_READONLY_OPS |
482 | Slab_to_rw(o); | |
483 | #endif | |
484 | ||
acb36ea4 GS |
485 | /* COP* is not cleared by op_clear() so that we may track line |
486 | * numbers etc even after null() */ | |
3235b7a3 | 487 | if (type == OP_NEXTSTATE || type == OP_SETSTATE || type == OP_DBSTATE) { |
acb36ea4 | 488 | cop_free((COP*)o); |
3235b7a3 | 489 | } |
acb36ea4 GS |
490 | |
491 | op_clear(o); | |
670f3923 DM |
492 | if (o->op_latefree) { |
493 | o->op_latefreed = 1; | |
494 | return; | |
495 | } | |
496 | do_free: | |
238a4c30 | 497 | FreeOp(o); |
4d494880 DM |
498 | #ifdef DEBUG_LEAKING_SCALARS |
499 | if (PL_op == o) | |
5f66b61c | 500 | PL_op = NULL; |
4d494880 | 501 | #endif |
acb36ea4 | 502 | } |
79072805 | 503 | |
93c66552 DM |
504 | void |
505 | Perl_op_clear(pTHX_ OP *o) | |
acb36ea4 | 506 | { |
13137afc | 507 | |
27da23d5 | 508 | dVAR; |
eb8433b7 NC |
509 | #ifdef PERL_MAD |
510 | /* if (o->op_madprop && o->op_madprop->mad_next) | |
511 | abort(); */ | |
3cc8d589 NC |
512 | /* FIXME for MAD - if I uncomment these two lines t/op/pack.t fails with |
513 | "modification of a read only value" for a reason I can't fathom why. | |
514 | It's the "" stringification of $_, where $_ was set to '' in a foreach | |
04a4d38e NC |
515 | loop, but it defies simplification into a small test case. |
516 | However, commenting them out has caused ext/List/Util/t/weak.t to fail | |
517 | the last test. */ | |
3cc8d589 NC |
518 | /* |
519 | mad_free(o->op_madprop); | |
520 | o->op_madprop = 0; | |
521 | */ | |
eb8433b7 NC |
522 | #endif |
523 | ||
524 | retry: | |
11343788 | 525 | switch (o->op_type) { |
acb36ea4 | 526 | case OP_NULL: /* Was holding old type, if any. */ |
eb8433b7 NC |
527 | if (PL_madskills && o->op_targ != OP_NULL) { |
528 | o->op_type = o->op_targ; | |
529 | o->op_targ = 0; | |
530 | goto retry; | |
531 | } | |
acb36ea4 | 532 | case OP_ENTEREVAL: /* Was holding hints. */ |
acb36ea4 | 533 | o->op_targ = 0; |
a0d0e21e | 534 | break; |
a6006777 | 535 | default: |
ac4c12e7 | 536 | if (!(o->op_flags & OPf_REF) |
0b94c7bb | 537 | || (PL_check[o->op_type] != MEMBER_TO_FPTR(Perl_ck_ftst))) |
a6006777 | 538 | break; |
539 | /* FALL THROUGH */ | |
463ee0b2 | 540 | case OP_GVSV: |
79072805 | 541 | case OP_GV: |
a6006777 | 542 | case OP_AELEMFAST: |
6a077020 DM |
543 | if (! (o->op_type == OP_AELEMFAST && o->op_flags & OPf_SPECIAL)) { |
544 | /* not an OP_PADAV replacement */ | |
350de78d | 545 | #ifdef USE_ITHREADS |
6a077020 DM |
546 | if (cPADOPo->op_padix > 0) { |
547 | /* No GvIN_PAD_off(cGVOPo_gv) here, because other references | |
548 | * may still exist on the pad */ | |
549 | pad_swipe(cPADOPo->op_padix, TRUE); | |
550 | cPADOPo->op_padix = 0; | |
551 | } | |
350de78d | 552 | #else |
6a077020 | 553 | SvREFCNT_dec(cSVOPo->op_sv); |
a0714e2c | 554 | cSVOPo->op_sv = NULL; |
350de78d | 555 | #endif |
6a077020 | 556 | } |
79072805 | 557 | break; |
a1ae71d2 | 558 | case OP_METHOD_NAMED: |
79072805 | 559 | case OP_CONST: |
11343788 | 560 | SvREFCNT_dec(cSVOPo->op_sv); |
a0714e2c | 561 | cSVOPo->op_sv = NULL; |
3b1c21fa AB |
562 | #ifdef USE_ITHREADS |
563 | /** Bug #15654 | |
564 | Even if op_clear does a pad_free for the target of the op, | |
6a077020 | 565 | pad_free doesn't actually remove the sv that exists in the pad; |
3b1c21fa AB |
566 | instead it lives on. This results in that it could be reused as |
567 | a target later on when the pad was reallocated. | |
568 | **/ | |
569 | if(o->op_targ) { | |
570 | pad_swipe(o->op_targ,1); | |
571 | o->op_targ = 0; | |
572 | } | |
573 | #endif | |
79072805 | 574 | break; |
748a9306 LW |
575 | case OP_GOTO: |
576 | case OP_NEXT: | |
577 | case OP_LAST: | |
578 | case OP_REDO: | |
11343788 | 579 | if (o->op_flags & (OPf_SPECIAL|OPf_STACKED|OPf_KIDS)) |
748a9306 LW |
580 | break; |
581 | /* FALL THROUGH */ | |
a0d0e21e | 582 | case OP_TRANS: |
acb36ea4 | 583 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { |
043e41b8 DM |
584 | #ifdef USE_ITHREADS |
585 | if (cPADOPo->op_padix > 0) { | |
586 | pad_swipe(cPADOPo->op_padix, TRUE); | |
587 | cPADOPo->op_padix = 0; | |
588 | } | |
589 | #else | |
a0ed51b3 | 590 | SvREFCNT_dec(cSVOPo->op_sv); |
a0714e2c | 591 | cSVOPo->op_sv = NULL; |
043e41b8 | 592 | #endif |
acb36ea4 GS |
593 | } |
594 | else { | |
ea71c68d | 595 | PerlMemShared_free(cPVOPo->op_pv); |
bd61b366 | 596 | cPVOPo->op_pv = NULL; |
acb36ea4 | 597 | } |
a0d0e21e LW |
598 | break; |
599 | case OP_SUBST: | |
20e98b0f | 600 | op_free(cPMOPo->op_pmreplrootu.op_pmreplroot); |
971a9dd3 | 601 | goto clear_pmop; |
748a9306 | 602 | case OP_PUSHRE: |
971a9dd3 | 603 | #ifdef USE_ITHREADS |
20e98b0f | 604 | if (cPMOPo->op_pmreplrootu.op_pmtargetoff) { |
dd2155a4 DM |
605 | /* No GvIN_PAD_off here, because other references may still |
606 | * exist on the pad */ | |
20e98b0f | 607 | pad_swipe(cPMOPo->op_pmreplrootu.op_pmtargetoff, TRUE); |
971a9dd3 GS |
608 | } |
609 | #else | |
20e98b0f | 610 | SvREFCNT_dec((SV*)cPMOPo->op_pmreplrootu.op_pmtargetgv); |
971a9dd3 GS |
611 | #endif |
612 | /* FALL THROUGH */ | |
a0d0e21e | 613 | case OP_MATCH: |
8782bef2 | 614 | case OP_QR: |
971a9dd3 | 615 | clear_pmop: |
c2b1997a | 616 | forget_pmop(cPMOPo, 1); |
20e98b0f | 617 | cPMOPo->op_pmreplrootu.op_pmreplroot = NULL; |
9cddf794 NC |
618 | /* we use the same protection as the "SAFE" version of the PM_ macros |
619 | * here since sv_clean_all might release some PMOPs | |
5f8cb046 DM |
620 | * after PL_regex_padav has been cleared |
621 | * and the clearing of PL_regex_padav needs to | |
622 | * happen before sv_clean_all | |
623 | */ | |
13137afc AB |
624 | #ifdef USE_ITHREADS |
625 | if(PL_regex_pad) { /* We could be in destruction */ | |
402d2eb1 | 626 | const IV offset = (cPMOPo)->op_pmoffset; |
9cddf794 | 627 | ReREFCNT_dec(PM_GETRE(cPMOPo)); |
402d2eb1 NC |
628 | PL_regex_pad[offset] = &PL_sv_undef; |
629 | sv_catpvn_nomg(PL_regex_pad[0], (const char *)&offset, | |
630 | sizeof(offset)); | |
13137afc | 631 | } |
9cddf794 NC |
632 | #else |
633 | ReREFCNT_dec(PM_GETRE(cPMOPo)); | |
634 | PM_SETRE(cPMOPo, NULL); | |
1eb1540c | 635 | #endif |
13137afc | 636 | |
a0d0e21e | 637 | break; |
79072805 LW |
638 | } |
639 | ||
743e66e6 | 640 | if (o->op_targ > 0) { |
11343788 | 641 | pad_free(o->op_targ); |
743e66e6 GS |
642 | o->op_targ = 0; |
643 | } | |
79072805 LW |
644 | } |
645 | ||
76e3520e | 646 | STATIC void |
3eb57f73 HS |
647 | S_cop_free(pTHX_ COP* cop) |
648 | { | |
6a3d5e3d | 649 | CopLABEL_free(cop); |
05ec9bb3 NIS |
650 | CopFILE_free(cop); |
651 | CopSTASH_free(cop); | |
0453d815 | 652 | if (! specialWARN(cop->cop_warnings)) |
72dc9ed5 | 653 | PerlMemShared_free(cop->cop_warnings); |
c28fe1ec | 654 | Perl_refcounted_he_free(aTHX_ cop->cop_hints_hash); |
3eb57f73 HS |
655 | } |
656 | ||
c2b1997a | 657 | STATIC void |
c4bd3ae5 NC |
658 | S_forget_pmop(pTHX_ PMOP *const o |
659 | #ifdef USE_ITHREADS | |
660 | , U32 flags | |
661 | #endif | |
662 | ) | |
c2b1997a NC |
663 | { |
664 | HV * const pmstash = PmopSTASH(o); | |
665 | if (pmstash && !SvIS_FREED(pmstash)) { | |
666 | MAGIC * const mg = mg_find((SV*)pmstash, PERL_MAGIC_symtab); | |
667 | if (mg) { | |
668 | PMOP **const array = (PMOP**) mg->mg_ptr; | |
669 | U32 count = mg->mg_len / sizeof(PMOP**); | |
670 | U32 i = count; | |
671 | ||
672 | while (i--) { | |
673 | if (array[i] == o) { | |
674 | /* Found it. Move the entry at the end to overwrite it. */ | |
675 | array[i] = array[--count]; | |
676 | mg->mg_len = count * sizeof(PMOP**); | |
677 | /* Could realloc smaller at this point always, but probably | |
678 | not worth it. Probably worth free()ing if we're the | |
679 | last. */ | |
680 | if(!count) { | |
681 | Safefree(mg->mg_ptr); | |
682 | mg->mg_ptr = NULL; | |
683 | } | |
684 | break; | |
685 | } | |
686 | } | |
687 | } | |
688 | } | |
1cdf7faf NC |
689 | if (PL_curpm == o) |
690 | PL_curpm = NULL; | |
c4bd3ae5 | 691 | #ifdef USE_ITHREADS |
c2b1997a NC |
692 | if (flags) |
693 | PmopSTASH_free(o); | |
c4bd3ae5 | 694 | #endif |
c2b1997a NC |
695 | } |
696 | ||
bfd0ff22 NC |
697 | STATIC void |
698 | S_find_and_forget_pmops(pTHX_ OP *o) | |
699 | { | |
700 | if (o->op_flags & OPf_KIDS) { | |
701 | OP *kid = cUNOPo->op_first; | |
702 | while (kid) { | |
703 | switch (kid->op_type) { | |
704 | case OP_SUBST: | |
705 | case OP_PUSHRE: | |
706 | case OP_MATCH: | |
707 | case OP_QR: | |
708 | forget_pmop((PMOP*)kid, 0); | |
709 | } | |
710 | find_and_forget_pmops(kid); | |
711 | kid = kid->op_sibling; | |
712 | } | |
713 | } | |
714 | } | |
715 | ||
93c66552 DM |
716 | void |
717 | Perl_op_null(pTHX_ OP *o) | |
8990e307 | 718 | { |
27da23d5 | 719 | dVAR; |
acb36ea4 GS |
720 | if (o->op_type == OP_NULL) |
721 | return; | |
eb8433b7 NC |
722 | if (!PL_madskills) |
723 | op_clear(o); | |
11343788 MB |
724 | o->op_targ = o->op_type; |
725 | o->op_type = OP_NULL; | |
22c35a8c | 726 | o->op_ppaddr = PL_ppaddr[OP_NULL]; |
8990e307 LW |
727 | } |
728 | ||
4026c95a SH |
729 | void |
730 | Perl_op_refcnt_lock(pTHX) | |
731 | { | |
27da23d5 | 732 | dVAR; |
96a5add6 | 733 | PERL_UNUSED_CONTEXT; |
4026c95a SH |
734 | OP_REFCNT_LOCK; |
735 | } | |
736 | ||
737 | void | |
738 | Perl_op_refcnt_unlock(pTHX) | |
739 | { | |
27da23d5 | 740 | dVAR; |
96a5add6 | 741 | PERL_UNUSED_CONTEXT; |
4026c95a SH |
742 | OP_REFCNT_UNLOCK; |
743 | } | |
744 | ||
79072805 LW |
745 | /* Contextualizers */ |
746 | ||
463ee0b2 | 747 | #define LINKLIST(o) ((o)->op_next ? (o)->op_next : linklist((OP*)o)) |
79072805 LW |
748 | |
749 | OP * | |
864dbfa3 | 750 | Perl_linklist(pTHX_ OP *o) |
79072805 | 751 | { |
3edf23ff | 752 | OP *first; |
79072805 | 753 | |
11343788 MB |
754 | if (o->op_next) |
755 | return o->op_next; | |
79072805 LW |
756 | |
757 | /* establish postfix order */ | |
3edf23ff AL |
758 | first = cUNOPo->op_first; |
759 | if (first) { | |
6867be6d | 760 | register OP *kid; |
3edf23ff AL |
761 | o->op_next = LINKLIST(first); |
762 | kid = first; | |
763 | for (;;) { | |
764 | if (kid->op_sibling) { | |
79072805 | 765 | kid->op_next = LINKLIST(kid->op_sibling); |
3edf23ff AL |
766 | kid = kid->op_sibling; |
767 | } else { | |
11343788 | 768 | kid->op_next = o; |
3edf23ff AL |
769 | break; |
770 | } | |
79072805 LW |
771 | } |
772 | } | |
773 | else | |
11343788 | 774 | o->op_next = o; |
79072805 | 775 | |
11343788 | 776 | return o->op_next; |
79072805 LW |
777 | } |
778 | ||
779 | OP * | |
864dbfa3 | 780 | Perl_scalarkids(pTHX_ OP *o) |
79072805 | 781 | { |
11343788 | 782 | if (o && o->op_flags & OPf_KIDS) { |
bfed75c6 | 783 | OP *kid; |
11343788 | 784 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
785 | scalar(kid); |
786 | } | |
11343788 | 787 | return o; |
79072805 LW |
788 | } |
789 | ||
76e3520e | 790 | STATIC OP * |
cea2e8a9 | 791 | S_scalarboolean(pTHX_ OP *o) |
8990e307 | 792 | { |
97aff369 | 793 | dVAR; |
d008e5eb | 794 | if (o->op_type == OP_SASSIGN && cBINOPo->op_first->op_type == OP_CONST) { |
d008e5eb | 795 | if (ckWARN(WARN_SYNTAX)) { |
6867be6d | 796 | const line_t oldline = CopLINE(PL_curcop); |
a0d0e21e | 797 | |
53a7735b DM |
798 | if (PL_parser && PL_parser->copline != NOLINE) |
799 | CopLINE_set(PL_curcop, PL_parser->copline); | |
9014280d | 800 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Found = in conditional, should be =="); |
57843af0 | 801 | CopLINE_set(PL_curcop, oldline); |
d008e5eb | 802 | } |
a0d0e21e | 803 | } |
11343788 | 804 | return scalar(o); |
8990e307 LW |
805 | } |
806 | ||
807 | OP * | |
864dbfa3 | 808 | Perl_scalar(pTHX_ OP *o) |
79072805 | 809 | { |
27da23d5 | 810 | dVAR; |
79072805 LW |
811 | OP *kid; |
812 | ||
a0d0e21e | 813 | /* assumes no premature commitment */ |
13765c85 DM |
814 | if (!o || (PL_parser && PL_parser->error_count) |
815 | || (o->op_flags & OPf_WANT) | |
5dc0d613 | 816 | || o->op_type == OP_RETURN) |
7e363e51 | 817 | { |
11343788 | 818 | return o; |
7e363e51 | 819 | } |
79072805 | 820 | |
5dc0d613 | 821 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_SCALAR; |
79072805 | 822 | |
11343788 | 823 | switch (o->op_type) { |
79072805 | 824 | case OP_REPEAT: |
11343788 | 825 | scalar(cBINOPo->op_first); |
8990e307 | 826 | break; |
79072805 LW |
827 | case OP_OR: |
828 | case OP_AND: | |
829 | case OP_COND_EXPR: | |
11343788 | 830 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
8990e307 | 831 | scalar(kid); |
79072805 | 832 | break; |
a0d0e21e | 833 | case OP_SPLIT: |
11343788 | 834 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
20e98b0f | 835 | if (!kPMOP->op_pmreplrootu.op_pmreplroot) |
12bcd1a6 | 836 | deprecate_old("implicit split to @_"); |
a0d0e21e LW |
837 | } |
838 | /* FALL THROUGH */ | |
79072805 | 839 | case OP_MATCH: |
8782bef2 | 840 | case OP_QR: |
79072805 LW |
841 | case OP_SUBST: |
842 | case OP_NULL: | |
8990e307 | 843 | default: |
11343788 MB |
844 | if (o->op_flags & OPf_KIDS) { |
845 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) | |
8990e307 LW |
846 | scalar(kid); |
847 | } | |
79072805 LW |
848 | break; |
849 | case OP_LEAVE: | |
850 | case OP_LEAVETRY: | |
5dc0d613 | 851 | kid = cLISTOPo->op_first; |
54310121 | 852 | scalar(kid); |
155aba94 | 853 | while ((kid = kid->op_sibling)) { |
54310121 | 854 | if (kid->op_sibling) |
855 | scalarvoid(kid); | |
856 | else | |
857 | scalar(kid); | |
858 | } | |
11206fdd | 859 | PL_curcop = &PL_compiling; |
54310121 | 860 | break; |
748a9306 | 861 | case OP_SCOPE: |
79072805 | 862 | case OP_LINESEQ: |
8990e307 | 863 | case OP_LIST: |
11343788 | 864 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
865 | if (kid->op_sibling) |
866 | scalarvoid(kid); | |
867 | else | |
868 | scalar(kid); | |
869 | } | |
11206fdd | 870 | PL_curcop = &PL_compiling; |
79072805 | 871 | break; |
a801c63c RGS |
872 | case OP_SORT: |
873 | if (ckWARN(WARN_VOID)) | |
9014280d | 874 | Perl_warner(aTHX_ packWARN(WARN_VOID), "Useless use of sort in scalar context"); |
79072805 | 875 | } |
11343788 | 876 | return o; |
79072805 LW |
877 | } |
878 | ||
879 | OP * | |
864dbfa3 | 880 | Perl_scalarvoid(pTHX_ OP *o) |
79072805 | 881 | { |
27da23d5 | 882 | dVAR; |
79072805 | 883 | OP *kid; |
c445ea15 | 884 | const char* useless = NULL; |
8990e307 | 885 | SV* sv; |
2ebea0a1 GS |
886 | U8 want; |
887 | ||
eb8433b7 NC |
888 | /* trailing mad null ops don't count as "there" for void processing */ |
889 | if (PL_madskills && | |
890 | o->op_type != OP_NULL && | |
891 | o->op_sibling && | |
892 | o->op_sibling->op_type == OP_NULL) | |
893 | { | |
894 | OP *sib; | |
895 | for (sib = o->op_sibling; | |
896 | sib && sib->op_type == OP_NULL; | |
897 | sib = sib->op_sibling) ; | |
898 | ||
899 | if (!sib) | |
900 | return o; | |
901 | } | |
902 | ||
acb36ea4 GS |
903 | if (o->op_type == OP_NEXTSTATE |
904 | || o->op_type == OP_SETSTATE | |
905 | || o->op_type == OP_DBSTATE | |
906 | || (o->op_type == OP_NULL && (o->op_targ == OP_NEXTSTATE | |
907 | || o->op_targ == OP_SETSTATE | |
908 | || o->op_targ == OP_DBSTATE))) | |
2ebea0a1 | 909 | PL_curcop = (COP*)o; /* for warning below */ |
79072805 | 910 | |
54310121 | 911 | /* assumes no premature commitment */ |
2ebea0a1 | 912 | want = o->op_flags & OPf_WANT; |
13765c85 DM |
913 | if ((want && want != OPf_WANT_SCALAR) |
914 | || (PL_parser && PL_parser->error_count) | |
5dc0d613 | 915 | || o->op_type == OP_RETURN) |
7e363e51 | 916 | { |
11343788 | 917 | return o; |
7e363e51 | 918 | } |
79072805 | 919 | |
b162f9ea | 920 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
921 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
922 | { | |
b162f9ea | 923 | return scalar(o); /* As if inside SASSIGN */ |
7e363e51 | 924 | } |
1c846c1f | 925 | |
5dc0d613 | 926 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_VOID; |
79072805 | 927 | |
11343788 | 928 | switch (o->op_type) { |
79072805 | 929 | default: |
22c35a8c | 930 | if (!(PL_opargs[o->op_type] & OA_FOLDCONST)) |
8990e307 | 931 | break; |
36477c24 | 932 | /* FALL THROUGH */ |
933 | case OP_REPEAT: | |
11343788 | 934 | if (o->op_flags & OPf_STACKED) |
8990e307 | 935 | break; |
5d82c453 GA |
936 | goto func_ops; |
937 | case OP_SUBSTR: | |
938 | if (o->op_private == 4) | |
939 | break; | |
8990e307 LW |
940 | /* FALL THROUGH */ |
941 | case OP_GVSV: | |
942 | case OP_WANTARRAY: | |
943 | case OP_GV: | |
74295f0b | 944 | case OP_SMARTMATCH: |
8990e307 LW |
945 | case OP_PADSV: |
946 | case OP_PADAV: | |
947 | case OP_PADHV: | |
948 | case OP_PADANY: | |
949 | case OP_AV2ARYLEN: | |
8990e307 | 950 | case OP_REF: |
a0d0e21e LW |
951 | case OP_REFGEN: |
952 | case OP_SREFGEN: | |
8990e307 LW |
953 | case OP_DEFINED: |
954 | case OP_HEX: | |
955 | case OP_OCT: | |
956 | case OP_LENGTH: | |
8990e307 LW |
957 | case OP_VEC: |
958 | case OP_INDEX: | |
959 | case OP_RINDEX: | |
960 | case OP_SPRINTF: | |
961 | case OP_AELEM: | |
962 | case OP_AELEMFAST: | |
963 | case OP_ASLICE: | |
8990e307 LW |
964 | case OP_HELEM: |
965 | case OP_HSLICE: | |
966 | case OP_UNPACK: | |
967 | case OP_PACK: | |
8990e307 LW |
968 | case OP_JOIN: |
969 | case OP_LSLICE: | |
970 | case OP_ANONLIST: | |
971 | case OP_ANONHASH: | |
972 | case OP_SORT: | |
973 | case OP_REVERSE: | |
974 | case OP_RANGE: | |
975 | case OP_FLIP: | |
976 | case OP_FLOP: | |
977 | case OP_CALLER: | |
978 | case OP_FILENO: | |
979 | case OP_EOF: | |
980 | case OP_TELL: | |
981 | case OP_GETSOCKNAME: | |
982 | case OP_GETPEERNAME: | |
983 | case OP_READLINK: | |
984 | case OP_TELLDIR: | |
985 | case OP_GETPPID: | |
986 | case OP_GETPGRP: | |
987 | case OP_GETPRIORITY: | |
988 | case OP_TIME: | |
989 | case OP_TMS: | |
990 | case OP_LOCALTIME: | |
991 | case OP_GMTIME: | |
992 | case OP_GHBYNAME: | |
993 | case OP_GHBYADDR: | |
994 | case OP_GHOSTENT: | |
995 | case OP_GNBYNAME: | |
996 | case OP_GNBYADDR: | |
997 | case OP_GNETENT: | |
998 | case OP_GPBYNAME: | |
999 | case OP_GPBYNUMBER: | |
1000 | case OP_GPROTOENT: | |
1001 | case OP_GSBYNAME: | |
1002 | case OP_GSBYPORT: | |
1003 | case OP_GSERVENT: | |
1004 | case OP_GPWNAM: | |
1005 | case OP_GPWUID: | |
1006 | case OP_GGRNAM: | |
1007 | case OP_GGRGID: | |
1008 | case OP_GETLOGIN: | |
78e1b766 | 1009 | case OP_PROTOTYPE: |
5d82c453 | 1010 | func_ops: |
64aac5a9 | 1011 | if (!(o->op_private & (OPpLVAL_INTRO|OPpOUR_INTRO))) |
74295f0b | 1012 | /* Otherwise it's "Useless use of grep iterator" */ |
f5df4782 | 1013 | useless = OP_DESC(o); |
8990e307 LW |
1014 | break; |
1015 | ||
9f82cd5f YST |
1016 | case OP_NOT: |
1017 | kid = cUNOPo->op_first; | |
1018 | if (kid->op_type != OP_MATCH && kid->op_type != OP_SUBST && | |
1019 | kid->op_type != OP_TRANS) { | |
1020 | goto func_ops; | |
1021 | } | |
1022 | useless = "negative pattern binding (!~)"; | |
1023 | break; | |
1024 | ||
8990e307 LW |
1025 | case OP_RV2GV: |
1026 | case OP_RV2SV: | |
1027 | case OP_RV2AV: | |
1028 | case OP_RV2HV: | |
192587c2 | 1029 | if (!(o->op_private & (OPpLVAL_INTRO|OPpOUR_INTRO)) && |
11343788 | 1030 | (!o->op_sibling || o->op_sibling->op_type != OP_READLINE)) |
8990e307 LW |
1031 | useless = "a variable"; |
1032 | break; | |
79072805 LW |
1033 | |
1034 | case OP_CONST: | |
7766f137 | 1035 | sv = cSVOPo_sv; |
7a52d87a GS |
1036 | if (cSVOPo->op_private & OPpCONST_STRICT) |
1037 | no_bareword_allowed(o); | |
1038 | else { | |
d008e5eb GS |
1039 | if (ckWARN(WARN_VOID)) { |
1040 | useless = "a constant"; | |
2e0ae2d3 | 1041 | if (o->op_private & OPpCONST_ARYBASE) |
d4c19fe8 | 1042 | useless = NULL; |
e7fec78e | 1043 | /* don't warn on optimised away booleans, eg |
b5a930ec | 1044 | * use constant Foo, 5; Foo || print; */ |
e7fec78e | 1045 | if (cSVOPo->op_private & OPpCONST_SHORTCIRCUIT) |
d4c19fe8 | 1046 | useless = NULL; |
960b4253 MG |
1047 | /* the constants 0 and 1 are permitted as they are |
1048 | conventionally used as dummies in constructs like | |
1049 | 1 while some_condition_with_side_effects; */ | |
e7fec78e | 1050 | else if (SvNIOK(sv) && (SvNV(sv) == 0.0 || SvNV(sv) == 1.0)) |
d4c19fe8 | 1051 | useless = NULL; |
d008e5eb | 1052 | else if (SvPOK(sv)) { |
a52fe3ac A |
1053 | /* perl4's way of mixing documentation and code |
1054 | (before the invention of POD) was based on a | |
1055 | trick to mix nroff and perl code. The trick was | |
1056 | built upon these three nroff macros being used in | |
1057 | void context. The pink camel has the details in | |
1058 | the script wrapman near page 319. */ | |
6136c704 AL |
1059 | const char * const maybe_macro = SvPVX_const(sv); |
1060 | if (strnEQ(maybe_macro, "di", 2) || | |
1061 | strnEQ(maybe_macro, "ds", 2) || | |
1062 | strnEQ(maybe_macro, "ig", 2)) | |
d4c19fe8 | 1063 | useless = NULL; |
d008e5eb | 1064 | } |
8990e307 LW |
1065 | } |
1066 | } | |
93c66552 | 1067 | op_null(o); /* don't execute or even remember it */ |
79072805 LW |
1068 | break; |
1069 | ||
1070 | case OP_POSTINC: | |
11343788 | 1071 | o->op_type = OP_PREINC; /* pre-increment is faster */ |
22c35a8c | 1072 | o->op_ppaddr = PL_ppaddr[OP_PREINC]; |
79072805 LW |
1073 | break; |
1074 | ||
1075 | case OP_POSTDEC: | |
11343788 | 1076 | o->op_type = OP_PREDEC; /* pre-decrement is faster */ |
22c35a8c | 1077 | o->op_ppaddr = PL_ppaddr[OP_PREDEC]; |
79072805 LW |
1078 | break; |
1079 | ||
679d6c4e HS |
1080 | case OP_I_POSTINC: |
1081 | o->op_type = OP_I_PREINC; /* pre-increment is faster */ | |
1082 | o->op_ppaddr = PL_ppaddr[OP_I_PREINC]; | |
1083 | break; | |
1084 | ||
1085 | case OP_I_POSTDEC: | |
1086 | o->op_type = OP_I_PREDEC; /* pre-decrement is faster */ | |
1087 | o->op_ppaddr = PL_ppaddr[OP_I_PREDEC]; | |
1088 | break; | |
1089 | ||
79072805 LW |
1090 | case OP_OR: |
1091 | case OP_AND: | |
c963b151 | 1092 | case OP_DOR: |
79072805 | 1093 | case OP_COND_EXPR: |
0d863452 RH |
1094 | case OP_ENTERGIVEN: |
1095 | case OP_ENTERWHEN: | |
11343788 | 1096 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
1097 | scalarvoid(kid); |
1098 | break; | |
5aabfad6 | 1099 | |
a0d0e21e | 1100 | case OP_NULL: |
11343788 | 1101 | if (o->op_flags & OPf_STACKED) |
a0d0e21e | 1102 | break; |
5aabfad6 | 1103 | /* FALL THROUGH */ |
2ebea0a1 GS |
1104 | case OP_NEXTSTATE: |
1105 | case OP_DBSTATE: | |
79072805 LW |
1106 | case OP_ENTERTRY: |
1107 | case OP_ENTER: | |
11343788 | 1108 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1109 | break; |
54310121 | 1110 | /* FALL THROUGH */ |
463ee0b2 | 1111 | case OP_SCOPE: |
79072805 LW |
1112 | case OP_LEAVE: |
1113 | case OP_LEAVETRY: | |
a0d0e21e | 1114 | case OP_LEAVELOOP: |
79072805 | 1115 | case OP_LINESEQ: |
79072805 | 1116 | case OP_LIST: |
0d863452 RH |
1117 | case OP_LEAVEGIVEN: |
1118 | case OP_LEAVEWHEN: | |
11343788 | 1119 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
1120 | scalarvoid(kid); |
1121 | break; | |
c90c0ff4 | 1122 | case OP_ENTEREVAL: |
5196be3e | 1123 | scalarkids(o); |
c90c0ff4 | 1124 | break; |
5aabfad6 | 1125 | case OP_REQUIRE: |
c90c0ff4 | 1126 | /* all requires must return a boolean value */ |
5196be3e | 1127 | o->op_flags &= ~OPf_WANT; |
d6483035 GS |
1128 | /* FALL THROUGH */ |
1129 | case OP_SCALAR: | |
5196be3e | 1130 | return scalar(o); |
a0d0e21e | 1131 | case OP_SPLIT: |
11343788 | 1132 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
20e98b0f | 1133 | if (!kPMOP->op_pmreplrootu.op_pmreplroot) |
12bcd1a6 | 1134 | deprecate_old("implicit split to @_"); |
a0d0e21e LW |
1135 | } |
1136 | break; | |
79072805 | 1137 | } |
411caa50 | 1138 | if (useless && ckWARN(WARN_VOID)) |
9014280d | 1139 | Perl_warner(aTHX_ packWARN(WARN_VOID), "Useless use of %s in void context", useless); |
11343788 | 1140 | return o; |
79072805 LW |
1141 | } |
1142 | ||
1143 | OP * | |
864dbfa3 | 1144 | Perl_listkids(pTHX_ OP *o) |
79072805 | 1145 | { |
11343788 | 1146 | if (o && o->op_flags & OPf_KIDS) { |
6867be6d | 1147 | OP *kid; |
11343788 | 1148 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
1149 | list(kid); |
1150 | } | |
11343788 | 1151 | return o; |
79072805 LW |
1152 | } |
1153 | ||
1154 | OP * | |
864dbfa3 | 1155 | Perl_list(pTHX_ OP *o) |
79072805 | 1156 | { |
27da23d5 | 1157 | dVAR; |
79072805 LW |
1158 | OP *kid; |
1159 | ||
a0d0e21e | 1160 | /* assumes no premature commitment */ |
13765c85 DM |
1161 | if (!o || (o->op_flags & OPf_WANT) |
1162 | || (PL_parser && PL_parser->error_count) | |
5dc0d613 | 1163 | || o->op_type == OP_RETURN) |
7e363e51 | 1164 | { |
11343788 | 1165 | return o; |
7e363e51 | 1166 | } |
79072805 | 1167 | |
b162f9ea | 1168 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
1169 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
1170 | { | |
b162f9ea | 1171 | return o; /* As if inside SASSIGN */ |
7e363e51 | 1172 | } |
1c846c1f | 1173 | |
5dc0d613 | 1174 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_LIST; |
79072805 | 1175 | |
11343788 | 1176 | switch (o->op_type) { |
79072805 LW |
1177 | case OP_FLOP: |
1178 | case OP_REPEAT: | |
11343788 | 1179 | list(cBINOPo->op_first); |
79072805 LW |
1180 | break; |
1181 | case OP_OR: | |
1182 | case OP_AND: | |
1183 | case OP_COND_EXPR: | |
11343788 | 1184 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
1185 | list(kid); |
1186 | break; | |
1187 | default: | |
1188 | case OP_MATCH: | |
8782bef2 | 1189 | case OP_QR: |
79072805 LW |
1190 | case OP_SUBST: |
1191 | case OP_NULL: | |
11343788 | 1192 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1193 | break; |
11343788 MB |
1194 | if (!o->op_next && cUNOPo->op_first->op_type == OP_FLOP) { |
1195 | list(cBINOPo->op_first); | |
1196 | return gen_constant_list(o); | |
79072805 LW |
1197 | } |
1198 | case OP_LIST: | |
11343788 | 1199 | listkids(o); |
79072805 LW |
1200 | break; |
1201 | case OP_LEAVE: | |
1202 | case OP_LEAVETRY: | |
5dc0d613 | 1203 | kid = cLISTOPo->op_first; |
54310121 | 1204 | list(kid); |
155aba94 | 1205 | while ((kid = kid->op_sibling)) { |
54310121 | 1206 | if (kid->op_sibling) |
1207 | scalarvoid(kid); | |
1208 | else | |
1209 | list(kid); | |
1210 | } | |
11206fdd | 1211 | PL_curcop = &PL_compiling; |
54310121 | 1212 | break; |
748a9306 | 1213 | case OP_SCOPE: |
79072805 | 1214 | case OP_LINESEQ: |
11343788 | 1215 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
1216 | if (kid->op_sibling) |
1217 | scalarvoid(kid); | |
1218 | else | |
1219 | list(kid); | |
1220 | } | |
11206fdd | 1221 | PL_curcop = &PL_compiling; |
79072805 | 1222 | break; |
c90c0ff4 | 1223 | case OP_REQUIRE: |
1224 | /* all requires must return a boolean value */ | |
5196be3e MB |
1225 | o->op_flags &= ~OPf_WANT; |
1226 | return scalar(o); | |
79072805 | 1227 | } |
11343788 | 1228 | return o; |
79072805 LW |
1229 | } |
1230 | ||
1231 | OP * | |
864dbfa3 | 1232 | Perl_scalarseq(pTHX_ OP *o) |
79072805 | 1233 | { |
97aff369 | 1234 | dVAR; |
11343788 | 1235 | if (o) { |
1496a290 AL |
1236 | const OPCODE type = o->op_type; |
1237 | ||
1238 | if (type == OP_LINESEQ || type == OP_SCOPE || | |
1239 | type == OP_LEAVE || type == OP_LEAVETRY) | |
463ee0b2 | 1240 | { |
6867be6d | 1241 | OP *kid; |
11343788 | 1242 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
ed6116ce | 1243 | if (kid->op_sibling) { |
463ee0b2 | 1244 | scalarvoid(kid); |
ed6116ce | 1245 | } |
463ee0b2 | 1246 | } |
3280af22 | 1247 | PL_curcop = &PL_compiling; |
79072805 | 1248 | } |
11343788 | 1249 | o->op_flags &= ~OPf_PARENS; |
3280af22 | 1250 | if (PL_hints & HINT_BLOCK_SCOPE) |
11343788 | 1251 | o->op_flags |= OPf_PARENS; |
79072805 | 1252 | } |
8990e307 | 1253 | else |
11343788 MB |
1254 | o = newOP(OP_STUB, 0); |
1255 | return o; | |
79072805 LW |
1256 | } |
1257 | ||
76e3520e | 1258 | STATIC OP * |
cea2e8a9 | 1259 | S_modkids(pTHX_ OP *o, I32 type) |
79072805 | 1260 | { |
11343788 | 1261 | if (o && o->op_flags & OPf_KIDS) { |
6867be6d | 1262 | OP *kid; |
11343788 | 1263 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 | 1264 | mod(kid, type); |
79072805 | 1265 | } |
11343788 | 1266 | return o; |
79072805 LW |
1267 | } |
1268 | ||
ff7298cb | 1269 | /* Propagate lvalue ("modifiable") context to an op and its children. |
ddeae0f1 DM |
1270 | * 'type' represents the context type, roughly based on the type of op that |
1271 | * would do the modifying, although local() is represented by OP_NULL. | |
1272 | * It's responsible for detecting things that can't be modified, flag | |
1273 | * things that need to behave specially in an lvalue context (e.g., "$$x = 5" | |
1274 | * might have to vivify a reference in $x), and so on. | |
1275 | * | |
1276 | * For example, "$a+1 = 2" would cause mod() to be called with o being | |
1277 | * OP_ADD and type being OP_SASSIGN, and would output an error. | |
1278 | */ | |
1279 | ||
79072805 | 1280 | OP * |
864dbfa3 | 1281 | Perl_mod(pTHX_ OP *o, I32 type) |
79072805 | 1282 | { |
27da23d5 | 1283 | dVAR; |
79072805 | 1284 | OP *kid; |
ddeae0f1 DM |
1285 | /* -1 = error on localize, 0 = ignore localize, 1 = ok to localize */ |
1286 | int localize = -1; | |
79072805 | 1287 | |
13765c85 | 1288 | if (!o || (PL_parser && PL_parser->error_count)) |
11343788 | 1289 | return o; |
79072805 | 1290 | |
b162f9ea | 1291 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
1292 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
1293 | { | |
b162f9ea | 1294 | return o; |
7e363e51 | 1295 | } |
1c846c1f | 1296 | |
11343788 | 1297 | switch (o->op_type) { |
68dc0745 | 1298 | case OP_UNDEF: |
ddeae0f1 | 1299 | localize = 0; |
3280af22 | 1300 | PL_modcount++; |
5dc0d613 | 1301 | return o; |
a0d0e21e | 1302 | case OP_CONST: |
2e0ae2d3 | 1303 | if (!(o->op_private & OPpCONST_ARYBASE)) |
a0d0e21e | 1304 | goto nomod; |
54dc0f91 | 1305 | localize = 0; |
3280af22 | 1306 | if (PL_eval_start && PL_eval_start->op_type == OP_CONST) { |
fc15ae8f NC |
1307 | CopARYBASE_set(&PL_compiling, |
1308 | (I32)SvIV(cSVOPx(PL_eval_start)->op_sv)); | |
3280af22 | 1309 | PL_eval_start = 0; |
a0d0e21e LW |
1310 | } |
1311 | else if (!type) { | |
fc15ae8f NC |
1312 | SAVECOPARYBASE(&PL_compiling); |
1313 | CopARYBASE_set(&PL_compiling, 0); | |
a0d0e21e LW |
1314 | } |
1315 | else if (type == OP_REFGEN) | |
1316 | goto nomod; | |
1317 | else | |
cea2e8a9 | 1318 | Perl_croak(aTHX_ "That use of $[ is unsupported"); |
a0d0e21e | 1319 | break; |
5f05dabc | 1320 | case OP_STUB: |
58bde88d | 1321 | if ((o->op_flags & OPf_PARENS) || PL_madskills) |
5f05dabc | 1322 | break; |
1323 | goto nomod; | |
a0d0e21e LW |
1324 | case OP_ENTERSUB: |
1325 | if ((type == OP_UNDEF || type == OP_REFGEN) && | |
11343788 MB |
1326 | !(o->op_flags & OPf_STACKED)) { |
1327 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
e26df76a NC |
1328 | /* The default is to set op_private to the number of children, |
1329 | which for a UNOP such as RV2CV is always 1. And w're using | |
1330 | the bit for a flag in RV2CV, so we need it clear. */ | |
1331 | o->op_private &= ~1; | |
22c35a8c | 1332 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 | 1333 | assert(cUNOPo->op_first->op_type == OP_NULL); |
93c66552 | 1334 | op_null(((LISTOP*)cUNOPo->op_first)->op_first);/* disable pushmark */ |
79072805 LW |
1335 | break; |
1336 | } | |
95f0a2f1 SB |
1337 | else if (o->op_private & OPpENTERSUB_NOMOD) |
1338 | return o; | |
cd06dffe GS |
1339 | else { /* lvalue subroutine call */ |
1340 | o->op_private |= OPpLVAL_INTRO; | |
e6438c1a | 1341 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
4978d6d9 | 1342 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) { |
cd06dffe GS |
1343 | /* Backward compatibility mode: */ |
1344 | o->op_private |= OPpENTERSUB_INARGS; | |
1345 | break; | |
1346 | } | |
1347 | else { /* Compile-time error message: */ | |
1348 | OP *kid = cUNOPo->op_first; | |
1349 | CV *cv; | |
1350 | OP *okid; | |
1351 | ||
3ea285d1 AL |
1352 | if (kid->op_type != OP_PUSHMARK) { |
1353 | if (kid->op_type != OP_NULL || kid->op_targ != OP_LIST) | |
1354 | Perl_croak(aTHX_ | |
1355 | "panic: unexpected lvalue entersub " | |
1356 | "args: type/targ %ld:%"UVuf, | |
1357 | (long)kid->op_type, (UV)kid->op_targ); | |
1358 | kid = kLISTOP->op_first; | |
1359 | } | |
cd06dffe GS |
1360 | while (kid->op_sibling) |
1361 | kid = kid->op_sibling; | |
1362 | if (!(kid->op_type == OP_NULL && kid->op_targ == OP_RV2CV)) { | |
1363 | /* Indirect call */ | |
1364 | if (kid->op_type == OP_METHOD_NAMED | |
1365 | || kid->op_type == OP_METHOD) | |
1366 | { | |
87d7fd28 | 1367 | UNOP *newop; |
b2ffa427 | 1368 | |
87d7fd28 | 1369 | NewOp(1101, newop, 1, UNOP); |
349fd7b7 GS |
1370 | newop->op_type = OP_RV2CV; |
1371 | newop->op_ppaddr = PL_ppaddr[OP_RV2CV]; | |
5f66b61c | 1372 | newop->op_first = NULL; |
87d7fd28 GS |
1373 | newop->op_next = (OP*)newop; |
1374 | kid->op_sibling = (OP*)newop; | |
349fd7b7 | 1375 | newop->op_private |= OPpLVAL_INTRO; |
e26df76a | 1376 | newop->op_private &= ~1; |
cd06dffe GS |
1377 | break; |
1378 | } | |
b2ffa427 | 1379 | |
cd06dffe GS |
1380 | if (kid->op_type != OP_RV2CV) |
1381 | Perl_croak(aTHX_ | |
1382 | "panic: unexpected lvalue entersub " | |
55140b79 | 1383 | "entry via type/targ %ld:%"UVuf, |
3d811634 | 1384 | (long)kid->op_type, (UV)kid->op_targ); |
cd06dffe GS |
1385 | kid->op_private |= OPpLVAL_INTRO; |
1386 | break; /* Postpone until runtime */ | |
1387 | } | |
b2ffa427 NIS |
1388 | |
1389 | okid = kid; | |
cd06dffe GS |
1390 | kid = kUNOP->op_first; |
1391 | if (kid->op_type == OP_NULL && kid->op_targ == OP_RV2SV) | |
1392 | kid = kUNOP->op_first; | |
b2ffa427 | 1393 | if (kid->op_type == OP_NULL) |
cd06dffe GS |
1394 | Perl_croak(aTHX_ |
1395 | "Unexpected constant lvalue entersub " | |
55140b79 | 1396 | "entry via type/targ %ld:%"UVuf, |
3d811634 | 1397 | (long)kid->op_type, (UV)kid->op_targ); |
cd06dffe GS |
1398 | if (kid->op_type != OP_GV) { |
1399 | /* Restore RV2CV to check lvalueness */ | |
1400 | restore_2cv: | |
1401 | if (kid->op_next && kid->op_next != kid) { /* Happens? */ | |
1402 | okid->op_next = kid->op_next; | |
1403 | kid->op_next = okid; | |
1404 | } | |
1405 | else | |
5f66b61c | 1406 | okid->op_next = NULL; |
cd06dffe GS |
1407 | okid->op_type = OP_RV2CV; |
1408 | okid->op_targ = 0; | |
1409 | okid->op_ppaddr = PL_ppaddr[OP_RV2CV]; | |
1410 | okid->op_private |= OPpLVAL_INTRO; | |
e26df76a | 1411 | okid->op_private &= ~1; |
cd06dffe GS |
1412 | break; |
1413 | } | |
b2ffa427 | 1414 | |
638eceb6 | 1415 | cv = GvCV(kGVOP_gv); |
1c846c1f | 1416 | if (!cv) |
cd06dffe GS |
1417 | goto restore_2cv; |
1418 | if (CvLVALUE(cv)) | |
1419 | break; | |
1420 | } | |
1421 | } | |
79072805 LW |
1422 | /* FALL THROUGH */ |
1423 | default: | |
a0d0e21e | 1424 | nomod: |
6fbb66d6 NC |
1425 | /* grep, foreach, subcalls, refgen */ |
1426 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) | |
a0d0e21e | 1427 | break; |
cea2e8a9 | 1428 | yyerror(Perl_form(aTHX_ "Can't modify %s in %s", |
638bc118 | 1429 | (o->op_type == OP_NULL && (o->op_flags & OPf_SPECIAL) |
cd06dffe GS |
1430 | ? "do block" |
1431 | : (o->op_type == OP_ENTERSUB | |
1432 | ? "non-lvalue subroutine call" | |
53e06cf0 | 1433 | : OP_DESC(o))), |
22c35a8c | 1434 | type ? PL_op_desc[type] : "local")); |
11343788 | 1435 | return o; |
79072805 | 1436 | |
a0d0e21e LW |
1437 | case OP_PREINC: |
1438 | case OP_PREDEC: | |
1439 | case OP_POW: | |
1440 | case OP_MULTIPLY: | |
1441 | case OP_DIVIDE: | |
1442 | case OP_MODULO: | |
1443 | case OP_REPEAT: | |
1444 | case OP_ADD: | |
1445 | case OP_SUBTRACT: | |
1446 | case OP_CONCAT: | |
1447 | case OP_LEFT_SHIFT: | |
1448 | case OP_RIGHT_SHIFT: | |
1449 | case OP_BIT_AND: | |
1450 | case OP_BIT_XOR: | |
1451 | case OP_BIT_OR: | |
1452 | case OP_I_MULTIPLY: | |
1453 | case OP_I_DIVIDE: | |
1454 | case OP_I_MODULO: | |
1455 | case OP_I_ADD: | |
1456 | case OP_I_SUBTRACT: | |
11343788 | 1457 | if (!(o->op_flags & OPf_STACKED)) |
a0d0e21e | 1458 | goto nomod; |
3280af22 | 1459 | PL_modcount++; |
a0d0e21e | 1460 | break; |
b2ffa427 | 1461 | |
79072805 | 1462 | case OP_COND_EXPR: |
ddeae0f1 | 1463 | localize = 1; |
11343788 | 1464 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 | 1465 | mod(kid, type); |
79072805 LW |
1466 | break; |
1467 | ||
1468 | case OP_RV2AV: | |
1469 | case OP_RV2HV: | |
11343788 | 1470 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) { |
e6438c1a | 1471 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
11343788 | 1472 | return o; /* Treat \(@foo) like ordinary list. */ |
748a9306 LW |
1473 | } |
1474 | /* FALL THROUGH */ | |
79072805 | 1475 | case OP_RV2GV: |
5dc0d613 | 1476 | if (scalar_mod_type(o, type)) |
3fe9a6f1 | 1477 | goto nomod; |
11343788 | 1478 | ref(cUNOPo->op_first, o->op_type); |
79072805 | 1479 | /* FALL THROUGH */ |
79072805 LW |
1480 | case OP_ASLICE: |
1481 | case OP_HSLICE: | |
78f9721b SM |
1482 | if (type == OP_LEAVESUBLV) |
1483 | o->op_private |= OPpMAYBE_LVSUB; | |
ddeae0f1 | 1484 | localize = 1; |
78f9721b SM |
1485 | /* FALL THROUGH */ |
1486 | case OP_AASSIGN: | |
93a17b20 LW |
1487 | case OP_NEXTSTATE: |
1488 | case OP_DBSTATE: | |
e6438c1a | 1489 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
79072805 | 1490 | break; |
463ee0b2 | 1491 | case OP_RV2SV: |
aeea060c | 1492 | ref(cUNOPo->op_first, o->op_type); |
ddeae0f1 | 1493 | localize = 1; |
463ee0b2 | 1494 | /* FALL THROUGH */ |
79072805 | 1495 | case OP_GV: |
463ee0b2 | 1496 | case OP_AV2ARYLEN: |
3280af22 | 1497 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 1498 | case OP_SASSIGN: |
bf4b1e52 GS |
1499 | case OP_ANDASSIGN: |
1500 | case OP_ORASSIGN: | |
c963b151 | 1501 | case OP_DORASSIGN: |
ddeae0f1 DM |
1502 | PL_modcount++; |
1503 | break; | |
1504 | ||
8990e307 | 1505 | case OP_AELEMFAST: |
6a077020 | 1506 | localize = -1; |
3280af22 | 1507 | PL_modcount++; |
8990e307 LW |
1508 | break; |
1509 | ||
748a9306 LW |
1510 | case OP_PADAV: |
1511 | case OP_PADHV: | |
e6438c1a | 1512 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
5196be3e MB |
1513 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) |
1514 | return o; /* Treat \(@foo) like ordinary list. */ | |
1515 | if (scalar_mod_type(o, type)) | |
3fe9a6f1 | 1516 | goto nomod; |
78f9721b SM |
1517 | if (type == OP_LEAVESUBLV) |
1518 | o->op_private |= OPpMAYBE_LVSUB; | |
748a9306 LW |
1519 | /* FALL THROUGH */ |
1520 | case OP_PADSV: | |
3280af22 | 1521 | PL_modcount++; |
ddeae0f1 | 1522 | if (!type) /* local() */ |
cea2e8a9 | 1523 | Perl_croak(aTHX_ "Can't localize lexical variable %s", |
dd2155a4 | 1524 | PAD_COMPNAME_PV(o->op_targ)); |
463ee0b2 LW |
1525 | break; |
1526 | ||
748a9306 | 1527 | case OP_PUSHMARK: |
ddeae0f1 | 1528 | localize = 0; |
748a9306 | 1529 | break; |
b2ffa427 | 1530 | |
69969c6f SB |
1531 | case OP_KEYS: |
1532 | if (type != OP_SASSIGN) | |
1533 | goto nomod; | |
5d82c453 GA |
1534 | goto lvalue_func; |
1535 | case OP_SUBSTR: | |
1536 | if (o->op_private == 4) /* don't allow 4 arg substr as lvalue */ | |
1537 | goto nomod; | |
5f05dabc | 1538 | /* FALL THROUGH */ |
a0d0e21e | 1539 | case OP_POS: |
463ee0b2 | 1540 | case OP_VEC: |
78f9721b SM |
1541 | if (type == OP_LEAVESUBLV) |
1542 | o->op_private |= OPpMAYBE_LVSUB; | |
5d82c453 | 1543 | lvalue_func: |
11343788 MB |
1544 | pad_free(o->op_targ); |
1545 | o->op_targ = pad_alloc(o->op_type, SVs_PADMY); | |
5dc0d613 | 1546 | assert(SvTYPE(PAD_SV(o->op_targ)) == SVt_NULL); |
11343788 MB |
1547 | if (o->op_flags & OPf_KIDS) |
1548 | mod(cBINOPo->op_first->op_sibling, type); | |
463ee0b2 | 1549 | break; |
a0d0e21e | 1550 | |
463ee0b2 LW |
1551 | case OP_AELEM: |
1552 | case OP_HELEM: | |
11343788 | 1553 | ref(cBINOPo->op_first, o->op_type); |
68dc0745 | 1554 | if (type == OP_ENTERSUB && |
5dc0d613 MB |
1555 | !(o->op_private & (OPpLVAL_INTRO | OPpDEREF))) |
1556 | o->op_private |= OPpLVAL_DEFER; | |
78f9721b SM |
1557 | if (type == OP_LEAVESUBLV) |
1558 | o->op_private |= OPpMAYBE_LVSUB; | |
ddeae0f1 | 1559 | localize = 1; |
3280af22 | 1560 | PL_modcount++; |
463ee0b2 LW |
1561 | break; |
1562 | ||
1563 | case OP_SCOPE: | |
1564 | case OP_LEAVE: | |
1565 | case OP_ENTER: | |
78f9721b | 1566 | case OP_LINESEQ: |
ddeae0f1 | 1567 | localize = 0; |
11343788 MB |
1568 | if (o->op_flags & OPf_KIDS) |
1569 | mod(cLISTOPo->op_last, type); | |
a0d0e21e LW |
1570 | break; |
1571 | ||
1572 | case OP_NULL: | |
ddeae0f1 | 1573 | localize = 0; |
638bc118 GS |
1574 | if (o->op_flags & OPf_SPECIAL) /* do BLOCK */ |
1575 | goto nomod; | |
1576 | else if (!(o->op_flags & OPf_KIDS)) | |
463ee0b2 | 1577 | break; |
11343788 MB |
1578 | if (o->op_targ != OP_LIST) { |
1579 | mod(cBINOPo->op_first, type); | |
a0d0e21e LW |
1580 | break; |
1581 | } | |
1582 | /* FALL THROUGH */ | |
463ee0b2 | 1583 | case OP_LIST: |
ddeae0f1 | 1584 | localize = 0; |
11343788 | 1585 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1586 | mod(kid, type); |
1587 | break; | |
78f9721b SM |
1588 | |
1589 | case OP_RETURN: | |
1590 | if (type != OP_LEAVESUBLV) | |
1591 | goto nomod; | |
1592 | break; /* mod()ing was handled by ck_return() */ | |
463ee0b2 | 1593 | } |
58d95175 | 1594 | |
8be1be90 AMS |
1595 | /* [20011101.069] File test operators interpret OPf_REF to mean that |
1596 | their argument is a filehandle; thus \stat(".") should not set | |
1597 | it. AMS 20011102 */ | |
1598 | if (type == OP_REFGEN && | |
1599 | PL_check[o->op_type] == MEMBER_TO_FPTR(Perl_ck_ftst)) | |
1600 | return o; | |
1601 | ||
1602 | if (type != OP_LEAVESUBLV) | |
1603 | o->op_flags |= OPf_MOD; | |
1604 | ||
1605 | if (type == OP_AASSIGN || type == OP_SASSIGN) | |
1606 | o->op_flags |= OPf_SPECIAL|OPf_REF; | |
ddeae0f1 DM |
1607 | else if (!type) { /* local() */ |
1608 | switch (localize) { | |
1609 | case 1: | |
1610 | o->op_private |= OPpLVAL_INTRO; | |
1611 | o->op_flags &= ~OPf_SPECIAL; | |
1612 | PL_hints |= HINT_BLOCK_SCOPE; | |
1613 | break; | |
1614 | case 0: | |
1615 | break; | |
1616 | case -1: | |
1617 | if (ckWARN(WARN_SYNTAX)) { | |
1618 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), | |
1619 | "Useless localization of %s", OP_DESC(o)); | |
1620 | } | |
1621 | } | |
463ee0b2 | 1622 | } |
8be1be90 AMS |
1623 | else if (type != OP_GREPSTART && type != OP_ENTERSUB |
1624 | && type != OP_LEAVESUBLV) | |
1625 | o->op_flags |= OPf_REF; | |
11343788 | 1626 | return o; |
463ee0b2 LW |
1627 | } |
1628 | ||
864dbfa3 | 1629 | STATIC bool |
5f66b61c | 1630 | S_scalar_mod_type(const OP *o, I32 type) |
3fe9a6f1 | 1631 | { |
1632 | switch (type) { | |
1633 | case OP_SASSIGN: | |
5196be3e | 1634 | if (o->op_type == OP_RV2GV) |
3fe9a6f1 | 1635 | return FALSE; |
1636 | /* FALL THROUGH */ | |
1637 | case OP_PREINC: | |
1638 | case OP_PREDEC: | |
1639 | case OP_POSTINC: | |
1640 | case OP_POSTDEC: | |
1641 | case OP_I_PREINC: | |
1642 | case OP_I_PREDEC: | |
1643 | case OP_I_POSTINC: | |
1644 | case OP_I_POSTDEC: | |
1645 | case OP_POW: | |
1646 | case OP_MULTIPLY: | |
1647 | case OP_DIVIDE: | |
1648 | case OP_MODULO: | |
1649 | case OP_REPEAT: | |
1650 | case OP_ADD: | |
1651 | case OP_SUBTRACT: | |
1652 | case OP_I_MULTIPLY: | |
1653 | case OP_I_DIVIDE: | |
1654 | case OP_I_MODULO: | |
1655 | case OP_I_ADD: | |
1656 | case OP_I_SUBTRACT: | |
1657 | case OP_LEFT_SHIFT: | |
1658 | case OP_RIGHT_SHIFT: | |
1659 | case OP_BIT_AND: | |
1660 | case OP_BIT_XOR: | |
1661 | case OP_BIT_OR: | |
1662 | case OP_CONCAT: | |
1663 | case OP_SUBST: | |
1664 | case OP_TRANS: | |
49e9fbe6 GS |
1665 | case OP_READ: |
1666 | case OP_SYSREAD: | |
1667 | case OP_RECV: | |
bf4b1e52 GS |
1668 | case OP_ANDASSIGN: |
1669 | case OP_ORASSIGN: | |
410d09fe | 1670 | case OP_DORASSIGN: |
3fe9a6f1 | 1671 | return TRUE; |
1672 | default: | |
1673 | return FALSE; | |
1674 | } | |
1675 | } | |
1676 | ||
35cd451c | 1677 | STATIC bool |
5f66b61c | 1678 | S_is_handle_constructor(const OP *o, I32 numargs) |
35cd451c GS |
1679 | { |
1680 | switch (o->op_type) { | |
1681 | case OP_PIPE_OP: | |
1682 | case OP_SOCKPAIR: | |
504618e9 | 1683 | if (numargs == 2) |
35cd451c GS |
1684 | return TRUE; |
1685 | /* FALL THROUGH */ | |
1686 | case OP_SYSOPEN: | |
1687 | case OP_OPEN: | |
ded8aa31 | 1688 | case OP_SELECT: /* XXX c.f. SelectSaver.pm */ |
35cd451c GS |
1689 | case OP_SOCKET: |
1690 | case OP_OPEN_DIR: | |
1691 | case OP_ACCEPT: | |
504618e9 | 1692 | if (numargs == 1) |
35cd451c | 1693 | return TRUE; |
5f66b61c | 1694 | /* FALLTHROUGH */ |
35cd451c GS |
1695 | default: |
1696 | return FALSE; | |
1697 | } | |
1698 | } | |
1699 | ||
463ee0b2 | 1700 | OP * |
864dbfa3 | 1701 | Perl_refkids(pTHX_ OP *o, I32 type) |
463ee0b2 | 1702 | { |
11343788 | 1703 | if (o && o->op_flags & OPf_KIDS) { |
6867be6d | 1704 | OP *kid; |
11343788 | 1705 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1706 | ref(kid, type); |
1707 | } | |
11343788 | 1708 | return o; |
463ee0b2 LW |
1709 | } |
1710 | ||
1711 | OP * | |
e4c5ccf3 | 1712 | Perl_doref(pTHX_ OP *o, I32 type, bool set_op_ref) |
463ee0b2 | 1713 | { |
27da23d5 | 1714 | dVAR; |
463ee0b2 | 1715 | OP *kid; |
463ee0b2 | 1716 | |
13765c85 | 1717 | if (!o || (PL_parser && PL_parser->error_count)) |
11343788 | 1718 | return o; |
463ee0b2 | 1719 | |
11343788 | 1720 | switch (o->op_type) { |
a0d0e21e | 1721 | case OP_ENTERSUB: |
afebc493 | 1722 | if ((type == OP_EXISTS || type == OP_DEFINED || type == OP_LOCK) && |
11343788 MB |
1723 | !(o->op_flags & OPf_STACKED)) { |
1724 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
22c35a8c | 1725 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 | 1726 | assert(cUNOPo->op_first->op_type == OP_NULL); |
93c66552 | 1727 | op_null(((LISTOP*)cUNOPo->op_first)->op_first); /* disable pushmark */ |
11343788 | 1728 | o->op_flags |= OPf_SPECIAL; |
e26df76a | 1729 | o->op_private &= ~1; |
8990e307 LW |
1730 | } |
1731 | break; | |
aeea060c | 1732 | |
463ee0b2 | 1733 | case OP_COND_EXPR: |
11343788 | 1734 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
e4c5ccf3 | 1735 | doref(kid, type, set_op_ref); |
463ee0b2 | 1736 | break; |
8990e307 | 1737 | case OP_RV2SV: |
35cd451c GS |
1738 | if (type == OP_DEFINED) |
1739 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
e4c5ccf3 | 1740 | doref(cUNOPo->op_first, o->op_type, set_op_ref); |
4633a7c4 LW |
1741 | /* FALL THROUGH */ |
1742 | case OP_PADSV: | |
5f05dabc | 1743 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1744 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1745 | : type == OP_RV2HV ? OPpDEREF_HV | |
1746 | : OPpDEREF_SV); | |
11343788 | 1747 | o->op_flags |= OPf_MOD; |
a0d0e21e | 1748 | } |
8990e307 | 1749 | break; |
1c846c1f | 1750 | |
463ee0b2 LW |
1751 | case OP_RV2AV: |
1752 | case OP_RV2HV: | |
e4c5ccf3 RH |
1753 | if (set_op_ref) |
1754 | o->op_flags |= OPf_REF; | |
8990e307 | 1755 | /* FALL THROUGH */ |
463ee0b2 | 1756 | case OP_RV2GV: |
35cd451c GS |
1757 | if (type == OP_DEFINED) |
1758 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
e4c5ccf3 | 1759 | doref(cUNOPo->op_first, o->op_type, set_op_ref); |
463ee0b2 | 1760 | break; |
8990e307 | 1761 | |
463ee0b2 LW |
1762 | case OP_PADAV: |
1763 | case OP_PADHV: | |
e4c5ccf3 RH |
1764 | if (set_op_ref) |
1765 | o->op_flags |= OPf_REF; | |
79072805 | 1766 | break; |
aeea060c | 1767 | |
8990e307 | 1768 | case OP_SCALAR: |
79072805 | 1769 | case OP_NULL: |
11343788 | 1770 | if (!(o->op_flags & OPf_KIDS)) |
463ee0b2 | 1771 | break; |
e4c5ccf3 | 1772 | doref(cBINOPo->op_first, type, set_op_ref); |
79072805 LW |
1773 | break; |
1774 | case OP_AELEM: | |
1775 | case OP_HELEM: | |
e4c5ccf3 | 1776 | doref(cBINOPo->op_first, o->op_type, set_op_ref); |
5f05dabc | 1777 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1778 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1779 | : type == OP_RV2HV ? OPpDEREF_HV | |
1780 | : OPpDEREF_SV); | |
11343788 | 1781 | o->op_flags |= OPf_MOD; |
8990e307 | 1782 | } |
79072805 LW |
1783 | break; |
1784 | ||
463ee0b2 | 1785 | case OP_SCOPE: |
79072805 | 1786 | case OP_LEAVE: |
e4c5ccf3 RH |
1787 | set_op_ref = FALSE; |
1788 | /* FALL THROUGH */ | |
79072805 | 1789 | case OP_ENTER: |
8990e307 | 1790 | case OP_LIST: |
11343788 | 1791 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1792 | break; |
e4c5ccf3 | 1793 | doref(cLISTOPo->op_last, type, set_op_ref); |
79072805 | 1794 | break; |
a0d0e21e LW |
1795 | default: |
1796 | break; | |
79072805 | 1797 | } |
11343788 | 1798 | return scalar(o); |
8990e307 | 1799 | |
79072805 LW |
1800 | } |
1801 | ||
09bef843 SB |
1802 | STATIC OP * |
1803 | S_dup_attrlist(pTHX_ OP *o) | |
1804 | { | |
97aff369 | 1805 | dVAR; |
0bd48802 | 1806 | OP *rop; |
09bef843 SB |
1807 | |
1808 | /* An attrlist is either a simple OP_CONST or an OP_LIST with kids, | |
1809 | * where the first kid is OP_PUSHMARK and the remaining ones | |
1810 | * are OP_CONST. We need to push the OP_CONST values. | |
1811 | */ | |
1812 | if (o->op_type == OP_CONST) | |
b37c2d43 | 1813 | rop = newSVOP(OP_CONST, o->op_flags, SvREFCNT_inc_NN(cSVOPo->op_sv)); |
eb8433b7 NC |
1814 | #ifdef PERL_MAD |
1815 | else if (o->op_type == OP_NULL) | |
1d866c12 | 1816 | rop = NULL; |
eb8433b7 | 1817 | #endif |
09bef843 SB |
1818 | else { |
1819 | assert((o->op_type == OP_LIST) && (o->op_flags & OPf_KIDS)); | |
5f66b61c | 1820 | rop = NULL; |
09bef843 SB |
1821 | for (o = cLISTOPo->op_first; o; o=o->op_sibling) { |
1822 | if (o->op_type == OP_CONST) | |
1823 | rop = append_elem(OP_LIST, rop, | |
1824 | newSVOP(OP_CONST, o->op_flags, | |
b37c2d43 | 1825 | SvREFCNT_inc_NN(cSVOPo->op_sv))); |
09bef843 SB |
1826 | } |
1827 | } | |
1828 | return rop; | |
1829 | } | |
1830 | ||
1831 | STATIC void | |
95f0a2f1 | 1832 | S_apply_attrs(pTHX_ HV *stash, SV *target, OP *attrs, bool for_my) |
09bef843 | 1833 | { |
27da23d5 | 1834 | dVAR; |
09bef843 SB |
1835 | SV *stashsv; |
1836 | ||
1837 | /* fake up C<use attributes $pkg,$rv,@attrs> */ | |
1838 | ENTER; /* need to protect against side-effects of 'use' */ | |
5aaec2b4 | 1839 | stashsv = stash ? newSVhek(HvNAME_HEK(stash)) : &PL_sv_no; |
e4783991 | 1840 | |
09bef843 | 1841 | #define ATTRSMODULE "attributes" |
95f0a2f1 SB |
1842 | #define ATTRSMODULE_PM "attributes.pm" |
1843 | ||
1844 | if (for_my) { | |
95f0a2f1 | 1845 | /* Don't force the C<use> if we don't need it. */ |
a4fc7abc | 1846 | SV * const * const svp = hv_fetchs(GvHVn(PL_incgv), ATTRSMODULE_PM, FALSE); |
95f0a2f1 | 1847 | if (svp && *svp != &PL_sv_undef) |
6f207bd3 | 1848 | NOOP; /* already in %INC */ |
95f0a2f1 SB |
1849 | else |
1850 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, | |
6136c704 | 1851 | newSVpvs(ATTRSMODULE), NULL); |
95f0a2f1 SB |
1852 | } |
1853 | else { | |
1854 | Perl_load_module(aTHX_ PERL_LOADMOD_IMPORT_OPS, | |
6136c704 AL |
1855 | newSVpvs(ATTRSMODULE), |
1856 | NULL, | |
95f0a2f1 SB |
1857 | prepend_elem(OP_LIST, |
1858 | newSVOP(OP_CONST, 0, stashsv), | |
1859 | prepend_elem(OP_LIST, | |
1860 | newSVOP(OP_CONST, 0, | |
1861 | newRV(target)), | |
1862 | dup_attrlist(attrs)))); | |
1863 | } | |
09bef843 SB |
1864 | LEAVE; |
1865 | } | |
1866 | ||
95f0a2f1 SB |
1867 | STATIC void |
1868 | S_apply_attrs_my(pTHX_ HV *stash, OP *target, OP *attrs, OP **imopsp) | |
1869 | { | |
97aff369 | 1870 | dVAR; |
95f0a2f1 SB |
1871 | OP *pack, *imop, *arg; |
1872 | SV *meth, *stashsv; | |
1873 | ||
1874 | if (!attrs) | |
1875 | return; | |
1876 | ||
1877 | assert(target->op_type == OP_PADSV || | |
1878 | target->op_type == OP_PADHV || | |
1879 | target->op_type == OP_PADAV); | |
1880 | ||
1881 | /* Ensure that attributes.pm is loaded. */ | |
dd2155a4 | 1882 | apply_attrs(stash, PAD_SV(target->op_targ), attrs, TRUE); |
95f0a2f1 SB |
1883 | |
1884 | /* Need package name for method call. */ | |
6136c704 | 1885 | pack = newSVOP(OP_CONST, 0, newSVpvs(ATTRSMODULE)); |
95f0a2f1 SB |
1886 | |
1887 | /* Build up the real arg-list. */ | |
5aaec2b4 NC |
1888 | stashsv = stash ? newSVhek(HvNAME_HEK(stash)) : &PL_sv_no; |
1889 | ||
95f0a2f1 SB |
1890 | arg = newOP(OP_PADSV, 0); |
1891 | arg->op_targ = target->op_targ; | |
1892 | arg = prepend_elem(OP_LIST, | |
1893 | newSVOP(OP_CONST, 0, stashsv), | |
1894 | prepend_elem(OP_LIST, | |
1895 | newUNOP(OP_REFGEN, 0, | |
1896 | mod(arg, OP_REFGEN)), | |
1897 | dup_attrlist(attrs))); | |
1898 | ||
1899 | /* Fake up a method call to import */ | |
18916d0d | 1900 | meth = newSVpvs_share("import"); |
95f0a2f1 SB |
1901 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL|OPf_WANT_VOID, |
1902 | append_elem(OP_LIST, | |
1903 | prepend_elem(OP_LIST, pack, list(arg)), | |
1904 | newSVOP(OP_METHOD_NAMED, 0, meth))); | |
1905 | imop->op_private |= OPpENTERSUB_NOMOD; | |
1906 | ||
1907 | /* Combine the ops. */ | |
1908 | *imopsp = append_elem(OP_LIST, *imopsp, imop); | |
1909 | } | |
1910 | ||
1911 | /* | |
1912 | =notfor apidoc apply_attrs_string | |
1913 | ||
1914 | Attempts to apply a list of attributes specified by the C<attrstr> and | |
1915 | C<len> arguments to the subroutine identified by the C<cv> argument which | |
1916 | is expected to be associated with the package identified by the C<stashpv> | |
1917 | argument (see L<attributes>). It gets this wrong, though, in that it | |
1918 | does not correctly identify the boundaries of the individual attribute | |
1919 | specifications within C<attrstr>. This is not really intended for the | |
1920 | public API, but has to be listed here for systems such as AIX which | |
1921 | need an explicit export list for symbols. (It's called from XS code | |
1922 | in support of the C<ATTRS:> keyword from F<xsubpp>.) Patches to fix it | |
1923 | to respect attribute syntax properly would be welcome. | |
1924 | ||
1925 | =cut | |
1926 | */ | |
1927 | ||
be3174d2 | 1928 | void |
6867be6d AL |
1929 | Perl_apply_attrs_string(pTHX_ const char *stashpv, CV *cv, |
1930 | const char *attrstr, STRLEN len) | |
be3174d2 | 1931 | { |
5f66b61c | 1932 | OP *attrs = NULL; |
be3174d2 GS |
1933 | |
1934 | if (!len) { | |
1935 | len = strlen(attrstr); | |
1936 | } | |
1937 | ||
1938 | while (len) { | |
1939 | for (; isSPACE(*attrstr) && len; --len, ++attrstr) ; | |
1940 | if (len) { | |
890ce7af | 1941 | const char * const sstr = attrstr; |
be3174d2 GS |
1942 | for (; !isSPACE(*attrstr) && len; --len, ++attrstr) ; |
1943 | attrs = append_elem(OP_LIST, attrs, | |
1944 | newSVOP(OP_CONST, 0, | |
1945 | newSVpvn(sstr, attrstr-sstr))); | |
1946 | } | |
1947 | } | |
1948 | ||
1949 | Perl_load_module(aTHX_ PERL_LOADMOD_IMPORT_OPS, | |
6136c704 | 1950 | newSVpvs(ATTRSMODULE), |
a0714e2c | 1951 | NULL, prepend_elem(OP_LIST, |
be3174d2 GS |
1952 | newSVOP(OP_CONST, 0, newSVpv(stashpv,0)), |
1953 | prepend_elem(OP_LIST, | |
1954 | newSVOP(OP_CONST, 0, | |
1955 | newRV((SV*)cv)), | |
1956 | attrs))); | |
1957 | } | |
1958 | ||
09bef843 | 1959 | STATIC OP * |
95f0a2f1 | 1960 | S_my_kid(pTHX_ OP *o, OP *attrs, OP **imopsp) |
93a17b20 | 1961 | { |
97aff369 | 1962 | dVAR; |
93a17b20 LW |
1963 | I32 type; |
1964 | ||
13765c85 | 1965 | if (!o || (PL_parser && PL_parser->error_count)) |
11343788 | 1966 | return o; |
93a17b20 | 1967 | |
bc61e325 | 1968 | type = o->op_type; |
eb8433b7 NC |
1969 | if (PL_madskills && type == OP_NULL && o->op_flags & OPf_KIDS) { |
1970 | (void)my_kid(cUNOPo->op_first, attrs, imopsp); | |
1971 | return o; | |
1972 | } | |
1973 | ||
93a17b20 | 1974 | if (type == OP_LIST) { |
6867be6d | 1975 | OP *kid; |
11343788 | 1976 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
95f0a2f1 | 1977 | my_kid(kid, attrs, imopsp); |
eb8433b7 NC |
1978 | } else if (type == OP_UNDEF |
1979 | #ifdef PERL_MAD | |
1980 | || type == OP_STUB | |
1981 | #endif | |
1982 | ) { | |
7766148a | 1983 | return o; |
77ca0c92 LW |
1984 | } else if (type == OP_RV2SV || /* "our" declaration */ |
1985 | type == OP_RV2AV || | |
1986 | type == OP_RV2HV) { /* XXX does this let anything illegal in? */ | |
1ce0b88c | 1987 | if (cUNOPo->op_first->op_type != OP_GV) { /* MJD 20011224 */ |
fab01b8e | 1988 | yyerror(Perl_form(aTHX_ "Can't declare %s in \"%s\"", |
952306ac | 1989 | OP_DESC(o), |
12bd6ede DM |
1990 | PL_parser->in_my == KEY_our |
1991 | ? "our" | |
1992 | : PL_parser->in_my == KEY_state ? "state" : "my")); | |
1ce0b88c | 1993 | } else if (attrs) { |
551405c4 | 1994 | GV * const gv = cGVOPx_gv(cUNOPo->op_first); |
12bd6ede DM |
1995 | PL_parser->in_my = FALSE; |
1996 | PL_parser->in_my_stash = NULL; | |
1ce0b88c RGS |
1997 | apply_attrs(GvSTASH(gv), |
1998 | (type == OP_RV2SV ? GvSV(gv) : | |
1999 | type == OP_RV2AV ? (SV*)GvAV(gv) : | |
2000 | type == OP_RV2HV ? (SV*)GvHV(gv) : (SV*)gv), | |
2001 | attrs, FALSE); | |
2002 | } | |
192587c2 | 2003 | o->op_private |= OPpOUR_INTRO; |
77ca0c92 | 2004 | return o; |
95f0a2f1 SB |
2005 | } |
2006 | else if (type != OP_PADSV && | |
93a17b20 LW |
2007 | type != OP_PADAV && |
2008 | type != OP_PADHV && | |
2009 | type != OP_PUSHMARK) | |
2010 | { | |
eb64745e | 2011 | yyerror(Perl_form(aTHX_ "Can't declare %s in \"%s\"", |
53e06cf0 | 2012 | OP_DESC(o), |
12bd6ede DM |
2013 | PL_parser->in_my == KEY_our |
2014 | ? "our" | |
2015 | : PL_parser->in_my == KEY_state ? "state" : "my")); | |
11343788 | 2016 | return o; |
93a17b20 | 2017 | } |
09bef843 SB |
2018 | else if (attrs && type != OP_PUSHMARK) { |
2019 | HV *stash; | |
09bef843 | 2020 | |
12bd6ede DM |
2021 | PL_parser->in_my = FALSE; |
2022 | PL_parser->in_my_stash = NULL; | |
eb64745e | 2023 | |
09bef843 | 2024 | /* check for C<my Dog $spot> when deciding package */ |
dd2155a4 DM |
2025 | stash = PAD_COMPNAME_TYPE(o->op_targ); |
2026 | if (!stash) | |
09bef843 | 2027 | stash = PL_curstash; |
95f0a2f1 | 2028 | apply_attrs_my(stash, o, attrs, imopsp); |
09bef843 | 2029 | } |
11343788 MB |
2030 | o->op_flags |= OPf_MOD; |
2031 | o->op_private |= OPpLVAL_INTRO; | |
12bd6ede | 2032 | if (PL_parser->in_my == KEY_state) |
952306ac | 2033 | o->op_private |= OPpPAD_STATE; |
11343788 | 2034 | return o; |
93a17b20 LW |
2035 | } |
2036 | ||
2037 | OP * | |
09bef843 SB |
2038 | Perl_my_attrs(pTHX_ OP *o, OP *attrs) |
2039 | { | |
97aff369 | 2040 | dVAR; |
0bd48802 | 2041 | OP *rops; |
95f0a2f1 SB |
2042 | int maybe_scalar = 0; |
2043 | ||
d2be0de5 | 2044 | /* [perl #17376]: this appears to be premature, and results in code such as |
c754c3d7 | 2045 | C< our(%x); > executing in list mode rather than void mode */ |
d2be0de5 | 2046 | #if 0 |
09bef843 SB |
2047 | if (o->op_flags & OPf_PARENS) |
2048 | list(o); | |
95f0a2f1 SB |
2049 | else |
2050 | maybe_scalar = 1; | |
d2be0de5 YST |
2051 | #else |
2052 | maybe_scalar = 1; | |
2053 | #endif | |
09bef843 SB |
2054 | if (attrs) |
2055 | SAVEFREEOP(attrs); | |
5f66b61c | 2056 | rops = NULL; |
95f0a2f1 SB |
2057 | o = my_kid(o, attrs, &rops); |
2058 | if (rops) { | |
2059 | if (maybe_scalar && o->op_type == OP_PADSV) { | |
2060 | o = scalar(append_list(OP_LIST, (LISTOP*)rops, (LISTOP*)o)); | |
2061 | o->op_private |= OPpLVAL_INTRO; | |
2062 | } | |
2063 | else | |
2064 | o = append_list(OP_LIST, (LISTOP*)o, (LISTOP*)rops); | |
2065 | } | |
12bd6ede DM |
2066 | PL_parser->in_my = FALSE; |
2067 | PL_parser->in_my_stash = NULL; | |
eb64745e | 2068 | return o; |
09bef843 SB |
2069 | } |
2070 | ||
2071 | OP * | |
2072 | Perl_my(pTHX_ OP *o) | |
2073 | { | |
5f66b61c | 2074 | return my_attrs(o, NULL); |
09bef843 SB |
2075 | } |
2076 | ||
2077 | OP * | |
864dbfa3 | 2078 | Perl_sawparens(pTHX_ OP *o) |
79072805 | 2079 | { |
96a5add6 | 2080 | PERL_UNUSED_CONTEXT; |
79072805 LW |
2081 | if (o) |
2082 | o->op_flags |= OPf_PARENS; | |
2083 | return o; | |
2084 | } | |
2085 | ||
2086 | OP * | |
864dbfa3 | 2087 | Perl_bind_match(pTHX_ I32 type, OP *left, OP *right) |
79072805 | 2088 | { |
11343788 | 2089 | OP *o; |
59f00321 | 2090 | bool ismatchop = 0; |
1496a290 AL |
2091 | const OPCODE ltype = left->op_type; |
2092 | const OPCODE rtype = right->op_type; | |
79072805 | 2093 | |
1496a290 AL |
2094 | if ( (ltype == OP_RV2AV || ltype == OP_RV2HV || ltype == OP_PADAV |
2095 | || ltype == OP_PADHV) && ckWARN(WARN_MISC)) | |
041457d9 | 2096 | { |
1496a290 | 2097 | const char * const desc |
666ea192 JH |
2098 | = PL_op_desc[(rtype == OP_SUBST || rtype == OP_TRANS) |
2099 | ? (int)rtype : OP_MATCH]; | |
2100 | const char * const sample = ((ltype == OP_RV2AV || ltype == OP_PADAV) | |
2101 | ? "@array" : "%hash"); | |
9014280d | 2102 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
1c846c1f | 2103 | "Applying %s to %s will act on scalar(%s)", |
599cee73 | 2104 | desc, sample, sample); |
2ae324a7 | 2105 | } |
2106 | ||
1496a290 | 2107 | if (rtype == OP_CONST && |
5cc9e5c9 RH |
2108 | cSVOPx(right)->op_private & OPpCONST_BARE && |
2109 | cSVOPx(right)->op_private & OPpCONST_STRICT) | |
2110 | { | |
2111 | no_bareword_allowed(right); | |
2112 | } | |
2113 | ||
1496a290 AL |
2114 | ismatchop = rtype == OP_MATCH || |
2115 | rtype == OP_SUBST || | |
2116 | rtype == OP_TRANS; | |
59f00321 RGS |
2117 | if (ismatchop && right->op_private & OPpTARGET_MY) { |
2118 | right->op_targ = 0; | |
2119 | right->op_private &= ~OPpTARGET_MY; | |
2120 | } | |
2121 | if (!(right->op_flags & OPf_STACKED) && ismatchop) { | |
1496a290 AL |
2122 | OP *newleft; |
2123 | ||
79072805 | 2124 | right->op_flags |= OPf_STACKED; |
1496a290 AL |
2125 | if (rtype != OP_MATCH && |
2126 | ! (rtype == OP_TRANS && | |
6fbb66d6 | 2127 | right->op_private & OPpTRANS_IDENTICAL)) |
1496a290 AL |
2128 | newleft = mod(left, rtype); |
2129 | else | |
2130 | newleft = left; | |
79072805 | 2131 | if (right->op_type == OP_TRANS) |
1496a290 | 2132 | o = newBINOP(OP_NULL, OPf_STACKED, scalar(newleft), right); |
79072805 | 2133 | else |
1496a290 | 2134 | o = prepend_elem(rtype, scalar(newleft), right); |
79072805 | 2135 | if (type == OP_NOT) |
11343788 MB |
2136 | return newUNOP(OP_NOT, 0, scalar(o)); |
2137 | return o; | |
79072805 LW |
2138 | } |
2139 | else | |
2140 | return bind_match(type, left, | |
131b3ad0 | 2141 | pmruntime(newPMOP(OP_MATCH, 0), right, 0)); |
79072805 LW |
2142 | } |
2143 | ||
2144 | OP * | |
864dbfa3 | 2145 | Perl_invert(pTHX_ OP *o) |
79072805 | 2146 | { |
11343788 | 2147 | if (!o) |
1d866c12 | 2148 | return NULL; |
11343788 | 2149 | return newUNOP(OP_NOT, OPf_SPECIAL, scalar(o)); |
79072805 LW |
2150 | } |
2151 | ||
2152 | OP * | |
864dbfa3 | 2153 | Perl_scope(pTHX_ OP *o) |
79072805 | 2154 | { |
27da23d5 | 2155 | dVAR; |
79072805 | 2156 | if (o) { |
3280af22 | 2157 | if (o->op_flags & OPf_PARENS || PERLDB_NOOPT || PL_tainting) { |
463ee0b2 LW |
2158 | o = prepend_elem(OP_LINESEQ, newOP(OP_ENTER, 0), o); |
2159 | o->op_type = OP_LEAVE; | |
22c35a8c | 2160 | o->op_ppaddr = PL_ppaddr[OP_LEAVE]; |
463ee0b2 | 2161 | } |
fdb22418 HS |
2162 | else if (o->op_type == OP_LINESEQ) { |
2163 | OP *kid; | |
2164 | o->op_type = OP_SCOPE; | |
2165 | o->op_ppaddr = PL_ppaddr[OP_SCOPE]; | |
2166 | kid = ((LISTOP*)o)->op_first; | |
59110972 | 2167 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) { |
fdb22418 | 2168 | op_null(kid); |
59110972 RH |
2169 | |
2170 | /* The following deals with things like 'do {1 for 1}' */ | |
2171 | kid = kid->op_sibling; | |
2172 | if (kid && | |
2173 | (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE)) | |
2174 | op_null(kid); | |
2175 | } | |
463ee0b2 | 2176 | } |
fdb22418 | 2177 | else |
5f66b61c | 2178 | o = newLISTOP(OP_SCOPE, 0, o, NULL); |
79072805 LW |
2179 | } |
2180 | return o; | |
2181 | } | |
72dc9ed5 | 2182 | |
a0d0e21e | 2183 | int |
864dbfa3 | 2184 | Perl_block_start(pTHX_ int full) |
79072805 | 2185 | { |
97aff369 | 2186 | dVAR; |
73d840c0 | 2187 | const int retval = PL_savestack_ix; |
dd2155a4 | 2188 | pad_block_start(full); |
b3ac6de7 | 2189 | SAVEHINTS(); |
3280af22 | 2190 | PL_hints &= ~HINT_BLOCK_SCOPE; |
68da3b2f | 2191 | SAVECOMPILEWARNINGS(); |
72dc9ed5 | 2192 | PL_compiling.cop_warnings = DUP_WARNINGS(PL_compiling.cop_warnings); |
a0d0e21e LW |
2193 | return retval; |
2194 | } | |
2195 | ||
2196 | OP* | |
864dbfa3 | 2197 | Perl_block_end(pTHX_ I32 floor, OP *seq) |
a0d0e21e | 2198 | { |
97aff369 | 2199 | dVAR; |
6867be6d | 2200 | const int needblockscope = PL_hints & HINT_BLOCK_SCOPE; |
551405c4 | 2201 | OP* const retval = scalarseq(seq); |
e9818f4e | 2202 | LEAVE_SCOPE(floor); |
623e6609 | 2203 | CopHINTS_set(&PL_compiling, PL_hints); |
a0d0e21e | 2204 | if (needblockscope) |
3280af22 | 2205 | PL_hints |= HINT_BLOCK_SCOPE; /* propagate out */ |
dd2155a4 | 2206 | pad_leavemy(); |
a0d0e21e LW |
2207 | return retval; |
2208 | } | |
2209 | ||
76e3520e | 2210 | STATIC OP * |
cea2e8a9 | 2211 | S_newDEFSVOP(pTHX) |
54b9620d | 2212 | { |
97aff369 | 2213 | dVAR; |
9f7d9405 | 2214 | const PADOFFSET offset = pad_findmy("$_"); |
00b1698f | 2215 | if (offset == NOT_IN_PAD || PAD_COMPNAME_FLAGS_isOUR(offset)) { |
59f00321 RGS |
2216 | return newSVREF(newGVOP(OP_GV, 0, PL_defgv)); |
2217 | } | |
2218 | else { | |
551405c4 | 2219 | OP * const o = newOP(OP_PADSV, 0); |
59f00321 RGS |
2220 | o->op_targ = offset; |
2221 | return o; | |
2222 | } | |
54b9620d MB |
2223 | } |
2224 | ||
a0d0e21e | 2225 | void |
864dbfa3 | 2226 | Perl_newPROG(pTHX_ OP *o) |
a0d0e21e | 2227 | { |
97aff369 | 2228 | dVAR; |
3280af22 | 2229 | if (PL_in_eval) { |
b295d113 TH |
2230 | if (PL_eval_root) |
2231 | return; | |
faef0170 HS |
2232 | PL_eval_root = newUNOP(OP_LEAVEEVAL, |
2233 | ((PL_in_eval & EVAL_KEEPERR) | |
2234 | ? OPf_SPECIAL : 0), o); | |
3280af22 | 2235 | PL_eval_start = linklist(PL_eval_root); |
7934575e GS |
2236 | PL_eval_root->op_private |= OPpREFCOUNTED; |
2237 | OpREFCNT_set(PL_eval_root, 1); | |
3280af22 | 2238 | PL_eval_root->op_next = 0; |
a2efc822 | 2239 | CALL_PEEP(PL_eval_start); |
a0d0e21e LW |
2240 | } |
2241 | else { | |
6be89cf9 AE |
2242 | if (o->op_type == OP_STUB) { |
2243 | PL_comppad_name = 0; | |
2244 | PL_compcv = 0; | |
d2c837a0 | 2245 | S_op_destroy(aTHX_ o); |
a0d0e21e | 2246 | return; |
6be89cf9 | 2247 | } |
3280af22 NIS |
2248 | PL_main_root = scope(sawparens(scalarvoid(o))); |
2249 | PL_curcop = &PL_compiling; | |
2250 | PL_main_start = LINKLIST(PL_main_root); | |
7934575e GS |
2251 | PL_main_root->op_private |= OPpREFCOUNTED; |
2252 | OpREFCNT_set(PL_main_root, 1); | |
3280af22 | 2253 | PL_main_root->op_next = 0; |
a2efc822 | 2254 | CALL_PEEP(PL_main_start); |
3280af22 | 2255 | PL_compcv = 0; |
3841441e | 2256 | |
4fdae800 | 2257 | /* Register with debugger */ |
84902520 | 2258 | if (PERLDB_INTER) { |
780a5241 NC |
2259 | CV * const cv |
2260 | = Perl_get_cvn_flags(aTHX_ STR_WITH_LEN("DB::postponed"), 0); | |
3841441e CS |
2261 | if (cv) { |
2262 | dSP; | |
924508f0 | 2263 | PUSHMARK(SP); |
cc49e20b | 2264 | XPUSHs((SV*)CopFILEGV(&PL_compiling)); |
3841441e | 2265 | PUTBACK; |
864dbfa3 | 2266 | call_sv((SV*)cv, G_DISCARD); |
3841441e CS |
2267 | } |
2268 | } | |
79072805 | 2269 | } |
79072805 LW |
2270 | } |
2271 | ||
2272 | OP * | |
864dbfa3 | 2273 | Perl_localize(pTHX_ OP *o, I32 lex) |
79072805 | 2274 | { |
97aff369 | 2275 | dVAR; |
79072805 | 2276 | if (o->op_flags & OPf_PARENS) |
d2be0de5 YST |
2277 | /* [perl #17376]: this appears to be premature, and results in code such as |
2278 | C< our(%x); > executing in list mode rather than void mode */ | |
2279 | #if 0 | |
79072805 | 2280 | list(o); |
d2be0de5 | 2281 | #else |
6f207bd3 | 2282 | NOOP; |
d2be0de5 | 2283 | #endif |
8990e307 | 2284 | else { |
f06b5848 DM |
2285 | if ( PL_parser->bufptr > PL_parser->oldbufptr |
2286 | && PL_parser->bufptr[-1] == ',' | |
041457d9 | 2287 | && ckWARN(WARN_PARENTHESIS)) |
64420d0d | 2288 | { |
f06b5848 | 2289 | char *s = PL_parser->bufptr; |
bac662ee | 2290 | bool sigil = FALSE; |
64420d0d | 2291 | |
8473848f | 2292 | /* some heuristics to detect a potential error */ |
bac662ee | 2293 | while (*s && (strchr(", \t\n", *s))) |
64420d0d | 2294 | s++; |
8473848f | 2295 | |
bac662ee TS |
2296 | while (1) { |
2297 | if (*s && strchr("@$%*", *s) && *++s | |
2298 | && (isALNUM(*s) || UTF8_IS_CONTINUED(*s))) { | |
2299 | s++; | |
2300 | sigil = TRUE; | |
2301 | while (*s && (isALNUM(*s) || UTF8_IS_CONTINUED(*s))) | |
2302 | s++; | |
2303 | while (*s && (strchr(", \t\n", *s))) | |
2304 | s++; | |
2305 | } | |
2306 | else | |
2307 | break; | |
2308 | } | |
2309 | if (sigil && (*s == ';' || *s == '=')) { | |
2310 | Perl_warner(aTHX_ packWARN(WARN_PARENTHESIS), | |
8473848f | 2311 | "Parentheses missing around \"%s\" list", |
12bd6ede DM |
2312 | lex |
2313 | ? (PL_parser->in_my == KEY_our | |
2314 | ? "our" | |
2315 | : PL_parser->in_my == KEY_state | |
2316 | ? "state" | |
2317 | : "my") | |
2318 | : "local"); | |
8473848f | 2319 | } |
8990e307 LW |
2320 | } |
2321 | } | |
93a17b20 | 2322 | if (lex) |
eb64745e | 2323 | o = my(o); |
93a17b20 | 2324 | else |
eb64745e | 2325 | o = mod(o, OP_NULL); /* a bit kludgey */ |
12bd6ede DM |
2326 | PL_parser->in_my = FALSE; |
2327 | PL_parser->in_my_stash = NULL; | |
eb64745e | 2328 | return o; |
79072805 LW |
2329 | } |
2330 | ||
2331 | OP * | |
864dbfa3 | 2332 | Perl_jmaybe(pTHX_ OP *o) |
79072805 LW |
2333 | { |
2334 | if (o->op_type == OP_LIST) { | |
fafc274c | 2335 | OP * const o2 |
d4c19fe8 | 2336 | = newSVREF(newGVOP(OP_GV, 0, gv_fetchpvs(";", GV_ADD|GV_NOTQUAL, SVt_PV))); |
554b3eca | 2337 | o = convert(OP_JOIN, 0, prepend_elem(OP_LIST, o2, o)); |
79072805 LW |
2338 | } |
2339 | return o; | |
2340 | } | |
2341 | ||
2342 | OP * | |
864dbfa3 | 2343 | Perl_fold_constants(pTHX_ register OP *o) |
79072805 | 2344 | { |
27da23d5 | 2345 | dVAR; |
79072805 | 2346 | register OP *curop; |
eb8433b7 | 2347 | OP *newop; |
8ea43dc8 | 2348 | VOL I32 type = o->op_type; |
e3cbe32f | 2349 | SV * VOL sv = NULL; |
b7f7fd0b NC |
2350 | int ret = 0; |
2351 | I32 oldscope; | |
2352 | OP *old_next; | |
5f2d9966 DM |
2353 | SV * const oldwarnhook = PL_warnhook; |
2354 | SV * const olddiehook = PL_diehook; | |
b7f7fd0b | 2355 | dJMPENV; |
79072805 | 2356 | |
22c35a8c | 2357 | if (PL_opargs[type] & OA_RETSCALAR) |
79072805 | 2358 | scalar(o); |
b162f9ea | 2359 | if (PL_opargs[type] & OA_TARGET && !o->op_targ) |
ed6116ce | 2360 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 | 2361 | |
eac055e9 GS |
2362 | /* integerize op, unless it happens to be C<-foo>. |
2363 | * XXX should pp_i_negate() do magic string negation instead? */ | |
2364 | if ((PL_opargs[type] & OA_OTHERINT) && (PL_hints & HINT_INTEGER) | |
2365 | && !(type == OP_NEGATE && cUNOPo->op_first->op_type == OP_CONST | |
2366 | && (cUNOPo->op_first->op_private & OPpCONST_BARE))) | |
2367 | { | |
22c35a8c | 2368 | o->op_ppaddr = PL_ppaddr[type = ++(o->op_type)]; |
eac055e9 | 2369 | } |
85e6fe83 | 2370 | |
22c35a8c | 2371 | if (!(PL_opargs[type] & OA_FOLDCONST)) |
79072805 LW |
2372 | goto nope; |
2373 | ||
de939608 | 2374 | switch (type) { |
7a52d87a GS |
2375 | case OP_NEGATE: |
2376 | /* XXX might want a ck_negate() for this */ | |
2377 | cUNOPo->op_first->op_private &= ~OPpCONST_STRICT; | |
2378 | break; | |
de939608 CS |
2379 | case OP_UCFIRST: |
2380 | case OP_LCFIRST: | |
2381 | case OP_UC: | |
2382 | case OP_LC: | |
69dcf70c MB |
2383 | case OP_SLT: |
2384 | case OP_SGT: | |
2385 | case OP_SLE: | |
2386 | case OP_SGE: | |
2387 | case OP_SCMP: | |
2de3dbcc JH |
2388 | /* XXX what about the numeric ops? */ |
2389 | if (PL_hints & HINT_LOCALE) | |
de939608 CS |
2390 | goto nope; |
2391 | } | |
2392 | ||
13765c85 | 2393 | if (PL_parser && PL_parser->error_count) |
a0d0e21e LW |
2394 | goto nope; /* Don't try to run w/ errors */ |
2395 | ||
79072805 | 2396 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
1496a290 AL |
2397 | const OPCODE type = curop->op_type; |
2398 | if ((type != OP_CONST || (curop->op_private & OPpCONST_BARE)) && | |
2399 | type != OP_LIST && | |
2400 | type != OP_SCALAR && | |
2401 | type != OP_NULL && | |
2402 | type != OP_PUSHMARK) | |
7a52d87a | 2403 | { |
79072805 LW |
2404 | goto nope; |
2405 | } | |
2406 | } | |
2407 | ||
2408 | curop = LINKLIST(o); | |
b7f7fd0b | 2409 | old_next = o->op_next; |
79072805 | 2410 | o->op_next = 0; |
533c011a | 2411 | PL_op = curop; |
b7f7fd0b NC |
2412 | |
2413 | oldscope = PL_scopestack_ix; | |
edb2152a | 2414 | create_eval_scope(G_FAKINGEVAL); |
b7f7fd0b | 2415 | |
5f2d9966 DM |
2416 | PL_warnhook = PERL_WARNHOOK_FATAL; |
2417 | PL_diehook = NULL; | |
b7f7fd0b NC |
2418 | JMPENV_PUSH(ret); |
2419 | ||
2420 | switch (ret) { | |
2421 | case 0: | |
2422 | CALLRUNOPS(aTHX); | |
2423 | sv = *(PL_stack_sp--); | |
2424 | if (o->op_targ && sv == PAD_SV(o->op_targ)) /* grab pad temp? */ | |
2425 | pad_swipe(o->op_targ, FALSE); | |
2426 | else if (SvTEMP(sv)) { /* grab mortal temp? */ | |
2427 | SvREFCNT_inc_simple_void(sv); | |
2428 | SvTEMP_off(sv); | |
2429 | } | |
2430 | break; | |
2431 | case 3: | |
2432 | /* Something tried to die. Abandon constant folding. */ | |
2433 | /* Pretend the error never happened. */ | |
2434 | sv_setpvn(ERRSV,"",0); | |
2435 | o->op_next = old_next; | |
2436 | break; | |
2437 | default: | |
2438 | JMPENV_POP; | |
5f2d9966 DM |
2439 | /* Don't expect 1 (setjmp failed) or 2 (something called my_exit) */ |
2440 | PL_warnhook = oldwarnhook; | |
2441 | PL_diehook = olddiehook; | |
2442 | /* XXX note that this croak may fail as we've already blown away | |
2443 | * the stack - eg any nested evals */ | |
b7f7fd0b NC |
2444 | Perl_croak(aTHX_ "panic: fold_constants JMPENV_PUSH returned %d", ret); |
2445 | } | |
b7f7fd0b | 2446 | JMPENV_POP; |
5f2d9966 DM |
2447 | PL_warnhook = oldwarnhook; |
2448 | PL_diehook = olddiehook; | |
edb2152a NC |
2449 | |
2450 | if (PL_scopestack_ix > oldscope) | |
2451 | delete_eval_scope(); | |
eb8433b7 | 2452 | |
b7f7fd0b NC |
2453 | if (ret) |
2454 | goto nope; | |
2455 | ||
eb8433b7 | 2456 | #ifndef PERL_MAD |
79072805 | 2457 | op_free(o); |
eb8433b7 | 2458 | #endif |
de5e01c2 | 2459 | assert(sv); |
79072805 | 2460 | if (type == OP_RV2GV) |
eb8433b7 NC |
2461 | newop = newGVOP(OP_GV, 0, (GV*)sv); |
2462 | else | |
670f1322 | 2463 | newop = newSVOP(OP_CONST, 0, (SV*)sv); |
eb8433b7 NC |
2464 | op_getmad(o,newop,'f'); |
2465 | return newop; | |
aeea060c | 2466 | |
b7f7fd0b | 2467 | nope: |
79072805 LW |
2468 | return o; |
2469 | } | |
2470 | ||
2471 | OP * | |
864dbfa3 | 2472 | Perl_gen_constant_list(pTHX_ register OP *o) |
79072805 | 2473 | { |
27da23d5 | 2474 | dVAR; |
79072805 | 2475 | register OP *curop; |
6867be6d | 2476 | const I32 oldtmps_floor = PL_tmps_floor; |
79072805 | 2477 | |
a0d0e21e | 2478 | list(o); |
13765c85 | 2479 | if (PL_parser && PL_parser->error_count) |
a0d0e21e LW |
2480 | return o; /* Don't attempt to run with errors */ |
2481 | ||
533c011a | 2482 | PL_op = curop = LINKLIST(o); |
a0d0e21e | 2483 | o->op_next = 0; |
a2efc822 | 2484 | CALL_PEEP(curop); |
cea2e8a9 GS |
2485 | pp_pushmark(); |
2486 | CALLRUNOPS(aTHX); | |
533c011a | 2487 | PL_op = curop; |
78c72037 NC |
2488 | assert (!(curop->op_flags & OPf_SPECIAL)); |
2489 | assert(curop->op_type == OP_RANGE); | |
cea2e8a9 | 2490 | pp_anonlist(); |
3280af22 | 2491 | PL_tmps_floor = oldtmps_floor; |
79072805 LW |
2492 | |
2493 | o->op_type = OP_RV2AV; | |
22c35a8c | 2494 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
fb53bbb2 SG |
2495 | o->op_flags &= ~OPf_REF; /* treat \(1..2) like an ordinary list */ |
2496 | o->op_flags |= OPf_PARENS; /* and flatten \(1..2,3) */ | |
2814eb74 | 2497 | o->op_opt = 0; /* needs to be revisited in peep() */ |
79072805 | 2498 | curop = ((UNOP*)o)->op_first; |
b37c2d43 | 2499 | ((UNOP*)o)->op_first = newSVOP(OP_CONST, 0, SvREFCNT_inc_NN(*PL_stack_sp--)); |
eb8433b7 NC |
2500 | #ifdef PERL_MAD |
2501 | op_getmad(curop,o,'O'); | |
2502 | #else | |
79072805 | 2503 | op_free(curop); |
eb8433b7 | 2504 | #endif |
79072805 LW |
2505 | linklist(o); |
2506 | return list(o); | |
2507 | } | |
2508 | ||
2509 | OP * | |
864dbfa3 | 2510 | Perl_convert(pTHX_ I32 type, I32 flags, OP *o) |
79072805 | 2511 | { |
27da23d5 | 2512 | dVAR; |
11343788 | 2513 | if (!o || o->op_type != OP_LIST) |
5f66b61c | 2514 | o = newLISTOP(OP_LIST, 0, o, NULL); |
748a9306 | 2515 | else |
5dc0d613 | 2516 | o->op_flags &= ~OPf_WANT; |
79072805 | 2517 | |
22c35a8c | 2518 | if (!(PL_opargs[type] & OA_MARK)) |
93c66552 | 2519 | op_null(cLISTOPo->op_first); |
8990e307 | 2520 | |
eb160463 | 2521 | o->op_type = (OPCODE)type; |
22c35a8c | 2522 | o->op_ppaddr = PL_ppaddr[type]; |
11343788 | 2523 | o->op_flags |= flags; |
79072805 | 2524 | |
11343788 | 2525 | o = CHECKOP(type, o); |
fe2774ed | 2526 | if (o->op_type != (unsigned)type) |
11343788 | 2527 | return o; |
79072805 | 2528 | |
11343788 | 2529 | return fold_constants(o); |
79072805 LW |
2530 | } |
2531 | ||
2532 | /* List constructors */ | |
2533 | ||
2534 | OP * | |
864dbfa3 | 2535 | Perl_append_elem(pTHX_ I32 type, OP *first, OP *last) |
79072805 LW |
2536 | { |
2537 | if (!first) | |
2538 | return last; | |
8990e307 LW |
2539 | |
2540 | if (!last) | |
79072805 | 2541 | return first; |
8990e307 | 2542 | |
fe2774ed | 2543 | if (first->op_type != (unsigned)type |
155aba94 GS |
2544 | || (type == OP_LIST && (first->op_flags & OPf_PARENS))) |
2545 | { | |
2546 | return newLISTOP(type, 0, first, last); | |
2547 | } | |
79072805 | 2548 | |
a0d0e21e LW |
2549 | if (first->op_flags & OPf_KIDS) |
2550 | ((LISTOP*)first)->op_last->op_sibling = last; | |
2551 | else { | |
2552 | first->op_flags |= OPf_KIDS; | |
2553 | ((LISTOP*)first)->op_first = last; | |
2554 | } | |
2555 | ((LISTOP*)first)->op_last = last; | |
a0d0e21e | 2556 | return first; |
79072805 LW |
2557 | } |
2558 | ||
2559 | OP * | |
864dbfa3 | 2560 | Perl_append_list(pTHX_ I32 type, LISTOP *first, LISTOP *last) |
79072805 LW |
2561 | { |
2562 | if (!first) | |
2563 | return (OP*)last; | |
8990e307 LW |
2564 | |
2565 | if (!last) | |
79072805 | 2566 | return (OP*)first; |
8990e307 | 2567 | |
fe2774ed | 2568 | if (first->op_type != (unsigned)type) |
79072805 | 2569 | return prepend_elem(type, (OP*)first, (OP*)last); |
8990e307 | 2570 | |
fe2774ed | 2571 | if (last->op_type != (unsigned)type) |
79072805 LW |
2572 | return append_elem(type, (OP*)first, (OP*)last); |
2573 | ||
2574 | first->op_last->op_sibling = last->op_first; | |
2575 | first->op_last = last->op_last; | |
117dada2 | 2576 | first->op_flags |= (last->op_flags & OPf_KIDS); |
1c846c1f | 2577 | |
eb8433b7 NC |
2578 | #ifdef PERL_MAD |
2579 | if (last->op_first && first->op_madprop) { | |
2580 | MADPROP *mp = last->op_first->op_madprop; | |
2581 | if (mp) { | |
2582 | while (mp->mad_next) | |
2583 | mp = mp->mad_next; | |
2584 | mp->mad_next = first->op_madprop; | |
2585 | } | |
2586 | else { | |
2587 | last->op_first->op_madprop = first->op_madprop; | |
2588 | } | |
2589 | } | |
2590 | first->op_madprop = last->op_madprop; | |
2591 | last->op_madprop = 0; | |
2592 | #endif | |
2593 | ||
d2c837a0 | 2594 | S_op_destroy(aTHX_ (OP*)last); |
238a4c30 | 2595 | |
79072805 LW |
2596 | return (OP*)first; |
2597 | } | |
2598 | ||
2599 | OP * | |
864dbfa3 | 2600 | Perl_prepend_elem(pTHX_ I32 type, OP *first, OP *last) |
79072805 LW |
2601 | { |
2602 | if (!first) | |
2603 | return last; | |
8990e307 LW |
2604 | |
2605 | if (!last) | |
79072805 | 2606 | return first; |
8990e307 | 2607 | |
fe2774ed | 2608 | if (last->op_type == (unsigned)type) { |
8990e307 LW |
2609 | if (type == OP_LIST) { /* already a PUSHMARK there */ |
2610 | first->op_sibling = ((LISTOP*)last)->op_first->op_sibling; | |
2611 | ((LISTOP*)last)->op_first->op_sibling = first; | |
36a5d4ba DC |
2612 | if (!(first->op_flags & OPf_PARENS)) |
2613 | last->op_flags &= ~OPf_PARENS; | |
8990e307 LW |
2614 | } |
2615 | else { | |
2616 | if (!(last->op_flags & OPf_KIDS)) { | |
2617 | ((LISTOP*)last)->op_last = first; | |
2618 | last->op_flags |= OPf_KIDS; | |
2619 | } | |
2620 | first->op_sibling = ((LISTOP*)last)->op_first; | |
2621 | ((LISTOP*)last)->op_first = first; | |
79072805 | 2622 | } |
117dada2 | 2623 | last->op_flags |= OPf_KIDS; |
79072805 LW |
2624 | return last; |
2625 | } | |
2626 | ||
2627 | return newLISTOP(type, 0, first, last); | |
2628 | } | |
2629 | ||
2630 | /* Constructors */ | |
2631 | ||
eb8433b7 NC |
2632 | #ifdef PERL_MAD |
2633 | ||
2634 | TOKEN * | |
2635 | Perl_newTOKEN(pTHX_ I32 optype, YYSTYPE lval, MADPROP* madprop) | |
2636 | { | |
2637 | TOKEN *tk; | |
99129197 | 2638 | Newxz(tk, 1, TOKEN); |
eb8433b7 NC |
2639 | tk->tk_type = (OPCODE)optype; |
2640 | tk->tk_type = 12345; | |
2641 | tk->tk_lval = lval; | |
2642 | tk->tk_mad = madprop; | |
2643 | return tk; | |
2644 | } | |
2645 | ||
2646 | void | |
2647 | Perl_token_free(pTHX_ TOKEN* tk) | |
2648 | { | |
2649 | if (tk->tk_type != 12345) | |
2650 | return; | |
2651 | mad_free(tk->tk_mad); | |
2652 | Safefree(tk); | |
2653 | } | |
2654 | ||
2655 | void | |
2656 | Perl_token_getmad(pTHX_ TOKEN* tk, OP* o, char slot) | |
2657 | { | |
2658 | MADPROP* mp; | |
2659 | MADPROP* tm; | |
2660 | if (tk->tk_type != 12345) { | |
2661 | Perl_warner(aTHX_ packWARN(WARN_MISC), | |
2662 | "Invalid TOKEN object ignored"); | |
2663 | return; | |
2664 | } | |
2665 | tm = tk->tk_mad; | |
2666 | if (!tm) | |
2667 | return; | |
2668 | ||
2669 | /* faked up qw list? */ | |
2670 | if (slot == '(' && | |
2671 | tm->mad_type == MAD_SV && | |
2672 | SvPVX((SV*)tm->mad_val)[0] == 'q') | |
2673 | slot = 'x'; | |
2674 | ||
2675 | if (o) { | |
2676 | mp = o->op_madprop; | |
2677 | if (mp) { | |
2678 | for (;;) { | |
2679 | /* pretend constant fold didn't happen? */ | |
2680 | if (mp->mad_key == 'f' && | |
2681 | (o->op_type == OP_CONST || | |
2682 | o->op_type == OP_GV) ) | |
2683 | { | |
2684 | token_getmad(tk,(OP*)mp->mad_val,slot); | |
2685 | return; | |
2686 | } | |
2687 | if (!mp->mad_next) | |
2688 | break; | |
2689 | mp = mp->mad_next; | |
2690 | } | |
2691 | mp->mad_next = tm; | |
2692 | mp = mp->mad_next; | |
2693 | } | |
2694 | else { | |
2695 | o->op_madprop = tm; | |
2696 | mp = o->op_madprop; | |
2697 | } | |
2698 | if (mp->mad_key == 'X') | |
2699 | mp->mad_key = slot; /* just change the first one */ | |
2700 | ||
2701 | tk->tk_mad = 0; | |
2702 | } | |
2703 | else | |
2704 | mad_free(tm); | |
2705 | Safefree(tk); | |
2706 | } | |
2707 | ||
2708 | void | |
2709 | Perl_op_getmad_weak(pTHX_ OP* from, OP* o, char slot) | |
2710 | { | |
2711 | MADPROP* mp; | |
2712 | if (!from) | |
2713 | return; | |
2714 | if (o) { | |
2715 | mp = o->op_madprop; | |
2716 | if (mp) { | |
2717 | for (;;) { | |
2718 | /* pretend constant fold didn't happen? */ | |
2719 | if (mp->mad_key == 'f' && | |
2720 | (o->op_type == OP_CONST || | |
2721 | o->op_type == OP_GV) ) | |
2722 | { | |
2723 | op_getmad(from,(OP*)mp->mad_val,slot); | |
2724 | return; | |
2725 | } | |
2726 | if (!mp->mad_next) | |
2727 | break; | |
2728 | mp = mp->mad_next; | |
2729 | } | |
2730 | mp->mad_next = newMADPROP(slot,MAD_OP,from,0); | |
2731 | } | |
2732 | else { | |
2733 | o->op_madprop = newMADPROP(slot,MAD_OP,from,0); | |
2734 | } | |
2735 | } | |
2736 | } | |
2737 | ||
2738 | void | |
2739 | Perl_op_getmad(pTHX_ OP* from, OP* o, char slot) | |
2740 | { | |
2741 | MADPROP* mp; | |
2742 | if (!from) | |
2743 | return; | |
2744 | if (o) { | |
2745 | mp = o->op_madprop; | |
2746 | if (mp) { | |
2747 | for (;;) { | |
2748 | /* pretend constant fold didn't happen? */ | |
2749 | if (mp->mad_key == 'f' && | |
2750 | (o->op_type == OP_CONST || | |
2751 | o->op_type == OP_GV) ) | |
2752 | { | |
2753 | op_getmad(from,(OP*)mp->mad_val,slot); | |
2754 | return; | |
2755 | } | |
2756 | if (!mp->mad_next) | |
2757 | break; | |
2758 | mp = mp->mad_next; | |
2759 | } | |
2760 | mp->mad_next = newMADPROP(slot,MAD_OP,from,1); | |
2761 | } | |
2762 | else { | |
2763 | o->op_madprop = newMADPROP(slot,MAD_OP,from,1); | |
2764 | } | |
2765 | } | |
2766 | else { | |
99129197 NC |
2767 | PerlIO_printf(PerlIO_stderr(), |
2768 | "DESTROYING op = %0"UVxf"\n", PTR2UV(from)); | |
eb8433b7 NC |
2769 | op_free(from); |
2770 | } | |
2771 | } | |
2772 | ||
2773 | void | |
2774 | Perl_prepend_madprops(pTHX_ MADPROP* mp, OP* o, char slot) | |
2775 | { | |
2776 | MADPROP* tm; | |
2777 | if (!mp || !o) | |
2778 | return; | |
2779 | if (slot) | |
2780 | mp->mad_key = slot; | |
2781 | tm = o->op_madprop; | |
2782 | o->op_madprop = mp; | |
2783 | for (;;) { | |
2784 | if (!mp->mad_next) | |
2785 | break; | |
2786 | mp = mp->mad_next; | |
2787 | } | |
2788 | mp->mad_next = tm; | |
2789 | } | |
2790 | ||
2791 | void | |
2792 | Perl_append_madprops(pTHX_ MADPROP* tm, OP* o, char slot) | |
2793 | { | |
2794 | if (!o) | |
2795 | return; | |
2796 | addmad(tm, &(o->op_madprop), slot); | |
2797 | } | |
2798 | ||
2799 | void | |
2800 | Perl_addmad(pTHX_ MADPROP* tm, MADPROP** root, char slot) | |
2801 | { | |
2802 | MADPROP* mp; | |
2803 | if (!tm || !root) | |
2804 | return; | |
2805 | if (slot) | |
2806 | tm->mad_key = slot; | |
2807 | mp = *root; | |
2808 | if (!mp) { | |
2809 | *root = tm; | |
2810 | return; | |
2811 | } | |
2812 | for (;;) { | |
2813 | if (!mp->mad_next) | |
2814 | break; | |
2815 | mp = mp->mad_next; | |
2816 | } | |
2817 | mp->mad_next = tm; | |
2818 | } | |
2819 | ||
2820 | MADPROP * | |
2821 | Perl_newMADsv(pTHX_ char key, SV* sv) | |
2822 | { | |
2823 | return newMADPROP(key, MAD_SV, sv, 0); | |
2824 | } | |
2825 | ||
2826 | MADPROP * | |
594c10dc | 2827 | Perl_newMADPROP(pTHX_ char key, char type, const void* val, I32 vlen) |
eb8433b7 NC |
2828 | { |
2829 | MADPROP *mp; | |
99129197 | 2830 | Newxz(mp, 1, MADPROP); |
eb8433b7 NC |
2831 | mp->mad_next = 0; |
2832 | mp->mad_key = key; | |
2833 | mp->mad_vlen = vlen; | |
2834 | mp->mad_type = type; | |
2835 | mp->mad_val = val; | |
2836 | /* PerlIO_printf(PerlIO_stderr(), "NEW mp = %0x\n", mp); */ | |
2837 | return mp; | |
2838 | } | |
2839 | ||
2840 | void | |
2841 | Perl_mad_free(pTHX_ MADPROP* mp) | |
2842 | { | |
2843 | /* PerlIO_printf(PerlIO_stderr(), "FREE mp = %0x\n", mp); */ | |
2844 | if (!mp) | |
2845 | return; | |
2846 | if (mp->mad_next) | |
2847 | mad_free(mp->mad_next); | |
bc177e6b | 2848 | /* if (PL_parser && PL_parser->lex_state != LEX_NOTPARSING && mp->mad_vlen) |
eb8433b7 NC |
2849 | PerlIO_printf(PerlIO_stderr(), "DESTROYING '%c'=<%s>\n", mp->mad_key & 255, mp->mad_val); */ |
2850 | switch (mp->mad_type) { | |
2851 | case MAD_NULL: | |
2852 | break; | |
2853 | case MAD_PV: | |
2854 | Safefree((char*)mp->mad_val); | |
2855 | break; | |
2856 | case MAD_OP: | |
2857 | if (mp->mad_vlen) /* vlen holds "strong/weak" boolean */ | |
2858 | op_free((OP*)mp->mad_val); | |
2859 | break; | |
2860 | case MAD_SV: | |
2861 | sv_free((SV*)mp->mad_val); | |
2862 | break; | |
2863 | default: | |
2864 | PerlIO_printf(PerlIO_stderr(), "Unrecognized mad\n"); | |
2865 | break; | |
2866 | } | |
2867 | Safefree(mp); | |
2868 | } | |
2869 | ||
2870 | #endif | |
2871 | ||
79072805 | 2872 | OP * |
864dbfa3 | 2873 | Perl_newNULLLIST(pTHX) |
79072805 | 2874 | { |
8990e307 LW |
2875 | return newOP(OP_STUB, 0); |
2876 | } | |
2877 | ||
2878 | OP * | |
864dbfa3 | 2879 | Perl_force_list(pTHX_ OP *o) |
8990e307 | 2880 | { |
11343788 | 2881 | if (!o || o->op_type != OP_LIST) |
5f66b61c | 2882 | o = newLISTOP(OP_LIST, 0, o, NULL); |
93c66552 | 2883 | op_null(o); |
11343788 | 2884 | return o; |
79072805 LW |
2885 | } |
2886 | ||
2887 | OP * | |
864dbfa3 | 2888 | Perl_newLISTOP(pTHX_ I32 type, I32 flags, OP *first, OP *last) |
79072805 | 2889 | { |
27da23d5 | 2890 | dVAR; |
79072805 LW |
2891 | LISTOP *listop; |
2892 | ||
b7dc083c | 2893 | NewOp(1101, listop, 1, LISTOP); |
79072805 | 2894 | |
eb160463 | 2895 | listop->op_type = (OPCODE)type; |
22c35a8c | 2896 | listop->op_ppaddr = PL_ppaddr[type]; |
117dada2 SM |
2897 | if (first || last) |
2898 | flags |= OPf_KIDS; | |
eb160463 | 2899 | listop->op_flags = (U8)flags; |
79072805 LW |
2900 | |
2901 | if (!last && first) | |
2902 | last = first; | |
2903 | else if (!first && last) | |
2904 | first = last; | |
8990e307 LW |
2905 | else if (first) |
2906 | first->op_sibling = last; | |
79072805 LW |
2907 | listop->op_first = first; |
2908 | listop->op_last = last; | |
8990e307 | 2909 | if (type == OP_LIST) { |
551405c4 | 2910 | OP* const pushop = newOP(OP_PUSHMARK, 0); |
8990e307 LW |
2911 | pushop->op_sibling = first; |
2912 | listop->op_first = pushop; | |
2913 | listop->op_flags |= OPf_KIDS; | |
2914 | if (!last) | |
2915 | listop->op_last = pushop; | |
2916 | } | |
79072805 | 2917 | |
463d09e6 | 2918 | return CHECKOP(type, listop); |
79072805 LW |
2919 | } |
2920 | ||
2921 | OP * | |
864dbfa3 | 2922 | Perl_newOP(pTHX_ I32 type, I32 flags) |
79072805 | 2923 | { |
27da23d5 | 2924 | dVAR; |
11343788 | 2925 | OP *o; |
b7dc083c | 2926 | NewOp(1101, o, 1, OP); |
eb160463 | 2927 | o->op_type = (OPCODE)type; |
22c35a8c | 2928 | o->op_ppaddr = PL_ppaddr[type]; |
eb160463 | 2929 | o->op_flags = (U8)flags; |
670f3923 DM |
2930 | o->op_latefree = 0; |
2931 | o->op_latefreed = 0; | |
7e5d8ed2 | 2932 | o->op_attached = 0; |
79072805 | 2933 | |
11343788 | 2934 | o->op_next = o; |
eb160463 | 2935 | o->op_private = (U8)(0 | (flags >> 8)); |
22c35a8c | 2936 | if (PL_opargs[type] & OA_RETSCALAR) |
11343788 | 2937 | scalar(o); |
22c35a8c | 2938 | if (PL_opargs[type] & OA_TARGET) |
11343788 MB |
2939 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
2940 | return CHECKOP(type, o); | |
79072805 LW |
2941 | } |
2942 | ||
2943 | OP * | |
864dbfa3 | 2944 | Perl_newUNOP(pTHX_ I32 type, I32 flags, OP *first) |
79072805 | 2945 | { |
27da23d5 | 2946 | dVAR; |
79072805 LW |
2947 | UNOP *unop; |
2948 | ||
93a17b20 | 2949 | if (!first) |
aeea060c | 2950 | first = newOP(OP_STUB, 0); |
22c35a8c | 2951 | if (PL_opargs[type] & OA_MARK) |
8990e307 | 2952 | first = force_list(first); |
93a17b20 | 2953 | |
b7dc083c | 2954 | NewOp(1101, unop, 1, UNOP); |
eb160463 | 2955 | unop->op_type = (OPCODE)type; |
22c35a8c | 2956 | unop->op_ppaddr = PL_ppaddr[type]; |
79072805 | 2957 | unop->op_first = first; |
585ec06d | 2958 | unop->op_flags = (U8)(flags | OPf_KIDS); |
eb160463 | 2959 | unop->op_private = (U8)(1 | (flags >> 8)); |
e50aee73 | 2960 | unop = (UNOP*) CHECKOP(type, unop); |
79072805 LW |
2961 | if (unop->op_next) |
2962 | return (OP*)unop; | |
2963 | ||
a0d0e21e | 2964 | return fold_constants((OP *) unop); |
79072805 LW |
2965 | } |
2966 | ||
2967 | OP * | |
864dbfa3 | 2968 | Perl_newBINOP(pTHX_ I32 type, I32 flags, OP *first, OP *last) |
79072805 | 2969 | { |
27da23d5 | 2970 | dVAR; |
79072805 | 2971 | BINOP *binop; |
b7dc083c | 2972 | NewOp(1101, binop, 1, BINOP); |
79072805 LW |
2973 | |
2974 | if (!first) | |
2975 | first = newOP(OP_NULL, 0); | |
2976 | ||
eb160463 | 2977 | binop->op_type = (OPCODE)type; |
22c35a8c | 2978 | binop->op_ppaddr = PL_ppaddr[type]; |
79072805 | 2979 | binop->op_first = first; |
585ec06d | 2980 | binop->op_flags = (U8)(flags | OPf_KIDS); |
79072805 LW |
2981 | if (!last) { |
2982 | last = first; | |
eb160463 | 2983 | binop->op_private = (U8)(1 | (flags >> 8)); |
79072805 LW |
2984 | } |
2985 | else { | |
eb160463 | 2986 | binop->op_private = (U8)(2 | (flags >> 8)); |
79072805 LW |
2987 | first->op_sibling = last; |
2988 | } | |
2989 | ||
e50aee73 | 2990 | binop = (BINOP*)CHECKOP(type, binop); |
eb160463 | 2991 | if (binop->op_next || binop->op_type != (OPCODE)type) |
79072805 LW |
2992 | return (OP*)binop; |
2993 | ||
7284ab6f | 2994 | binop->op_last = binop->op_first->op_sibling; |
79072805 | 2995 | |
a0d0e21e | 2996 | return fold_constants((OP *)binop); |
79072805 LW |
2997 | } |
2998 | ||
5f66b61c AL |
2999 | static int uvcompare(const void *a, const void *b) |
3000 | __attribute__nonnull__(1) | |
3001 | __attribute__nonnull__(2) | |
3002 | __attribute__pure__; | |
abb2c242 | 3003 | static int uvcompare(const void *a, const void *b) |
2b9d42f0 | 3004 | { |
e1ec3a88 | 3005 | if (*((const UV *)a) < (*(const UV *)b)) |
2b9d42f0 | 3006 | return -1; |
e1ec3a88 | 3007 | if (*((const UV *)a) > (*(const UV *)b)) |
2b9d42f0 | 3008 | return 1; |
e1ec3a88 | 3009 | if (*((const UV *)a+1) < (*(const UV *)b+1)) |
2b9d42f0 | 3010 | return -1; |
e1ec3a88 | 3011 | if (*((const UV *)a+1) > (*(const UV *)b+1)) |
2b9d42f0 | 3012 | return 1; |
a0ed51b3 LW |
3013 | return 0; |
3014 | } | |
3015 | ||
79072805 | 3016 | OP * |
864dbfa3 | 3017 | Perl_pmtrans(pTHX_ OP *o, OP *expr, OP *repl) |
79072805 | 3018 | { |
97aff369 | 3019 | dVAR; |
2d03de9c | 3020 | SV * const tstr = ((SVOP*)expr)->op_sv; |
fbbb0949 DM |
3021 | SV * const rstr = |
3022 | #ifdef PERL_MAD | |
3023 | (repl->op_type == OP_NULL) | |
3024 | ? ((SVOP*)((LISTOP*)repl)->op_first)->op_sv : | |
3025 | #endif | |
3026 | ((SVOP*)repl)->op_sv; | |
463ee0b2 LW |
3027 | STRLEN tlen; |
3028 | STRLEN rlen; | |
5c144d81 NC |
3029 | const U8 *t = (U8*)SvPV_const(tstr, tlen); |
3030 | const U8 *r = (U8*)SvPV_const(rstr, rlen); | |
79072805 LW |
3031 | register I32 i; |
3032 | register I32 j; | |
9b877dbb | 3033 | I32 grows = 0; |
79072805 LW |
3034 | register short *tbl; |
3035 | ||
551405c4 AL |
3036 | const I32 complement = o->op_private & OPpTRANS_COMPLEMENT; |
3037 | const I32 squash = o->op_private & OPpTRANS_SQUASH; | |
3038 | I32 del = o->op_private & OPpTRANS_DELETE; | |
043e41b8 | 3039 | SV* swash; |
800b4dc4 | 3040 | PL_hints |= HINT_BLOCK_SCOPE; |
1c846c1f | 3041 | |
036b4402 GS |
3042 | if (SvUTF8(tstr)) |
3043 | o->op_private |= OPpTRANS_FROM_UTF; | |
1c846c1f NIS |
3044 | |
3045 | if (SvUTF8(rstr)) | |
036b4402 | 3046 | o->op_private |= OPpTRANS_TO_UTF; |
79072805 | 3047 | |
a0ed51b3 | 3048 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { |
396482e1 | 3049 | SV* const listsv = newSVpvs("# comment\n"); |
c445ea15 | 3050 | SV* transv = NULL; |
5c144d81 NC |
3051 | const U8* tend = t + tlen; |
3052 | const U8* rend = r + rlen; | |
ba210ebe | 3053 | STRLEN ulen; |
84c133a0 RB |
3054 | UV tfirst = 1; |
3055 | UV tlast = 0; | |
3056 | IV tdiff; | |
3057 | UV rfirst = 1; | |
3058 | UV rlast = 0; | |
3059 | IV rdiff; | |
3060 | IV diff; | |
a0ed51b3 LW |
3061 | I32 none = 0; |
3062 | U32 max = 0; | |
3063 | I32 bits; | |
a0ed51b3 | 3064 | I32 havefinal = 0; |
9c5ffd7c | 3065 | U32 final = 0; |
551405c4 AL |
3066 | const I32 from_utf = o->op_private & OPpTRANS_FROM_UTF; |
3067 | const I32 to_utf = o->op_private & OPpTRANS_TO_UTF; | |
bf4a1e57 JH |
3068 | U8* tsave = NULL; |
3069 | U8* rsave = NULL; | |
9f7f3913 | 3070 | const U32 flags = UTF8_ALLOW_DEFAULT; |
bf4a1e57 JH |
3071 | |
3072 | if (!from_utf) { | |
3073 | STRLEN len = tlen; | |
5c144d81 | 3074 | t = tsave = bytes_to_utf8(t, &len); |
bf4a1e57 JH |
3075 | tend = t + len; |
3076 | } | |
3077 | if (!to_utf && rlen) { | |
3078 | STRLEN len = rlen; | |
5c144d81 | 3079 | r = rsave = bytes_to_utf8(r, &len); |
bf4a1e57 JH |
3080 | rend = r + len; |
3081 | } | |
a0ed51b3 | 3082 | |
2b9d42f0 NIS |
3083 | /* There are several snags with this code on EBCDIC: |
3084 | 1. 0xFF is a legal UTF-EBCDIC byte (there are no illegal bytes). | |
3085 | 2. scan_const() in toke.c has encoded chars in native encoding which makes | |
3086 | ranges at least in EBCDIC 0..255 range the bottom odd. | |
3087 | */ | |
3088 | ||
a0ed51b3 | 3089 | if (complement) { |
89ebb4a3 | 3090 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
2b9d42f0 | 3091 | UV *cp; |
a0ed51b3 | 3092 | UV nextmin = 0; |
a02a5408 | 3093 | Newx(cp, 2*tlen, UV); |
a0ed51b3 | 3094 | i = 0; |
396482e1 | 3095 | transv = newSVpvs(""); |
a0ed51b3 | 3096 | while (t < tend) { |
9f7f3913 | 3097 | cp[2*i] = utf8n_to_uvuni(t, tend-t, &ulen, flags); |
2b9d42f0 NIS |
3098 | t += ulen; |
3099 | if (t < tend && NATIVE_TO_UTF(*t) == 0xff) { | |
a0ed51b3 | 3100 | t++; |
9f7f3913 | 3101 | cp[2*i+1] = utf8n_to_uvuni(t, tend-t, &ulen, flags); |
2b9d42f0 | 3102 | t += ulen; |
a0ed51b3 | 3103 | } |
2b9d42f0 NIS |
3104 | else { |
3105 | cp[2*i+1] = cp[2*i]; | |
3106 | } | |
3107 | i++; | |
a0ed51b3 | 3108 | } |
2b9d42f0 | 3109 | qsort(cp, i, 2*sizeof(UV), uvcompare); |
a0ed51b3 | 3110 | for (j = 0; j < i; j++) { |
2b9d42f0 | 3111 | UV val = cp[2*j]; |
a0ed51b3 LW |
3112 | diff = val - nextmin; |
3113 | if (diff > 0) { | |
9041c2e3 | 3114 | t = uvuni_to_utf8(tmpbuf,nextmin); |
dfe13c55 | 3115 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 | 3116 | if (diff > 1) { |
2b9d42f0 | 3117 | U8 range_mark = UTF_TO_NATIVE(0xff); |
9041c2e3 | 3118 | t = uvuni_to_utf8(tmpbuf, val - 1); |
2b9d42f0 | 3119 | sv_catpvn(transv, (char *)&range_mark, 1); |
dfe13c55 | 3120 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 LW |
3121 | } |
3122 | } | |
2b9d42f0 | 3123 | val = cp[2*j+1]; |
a0ed51b3 LW |
3124 | if (val >= nextmin) |
3125 | nextmin = val + 1; | |
3126 | } | |
9041c2e3 | 3127 | t = uvuni_to_utf8(tmpbuf,nextmin); |
dfe13c55 | 3128 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
2b9d42f0 NIS |
3129 | { |
3130 | U8 range_mark = UTF_TO_NATIVE(0xff); | |
3131 | sv_catpvn(transv, (char *)&range_mark, 1); | |
3132 | } | |
b851fbc1 JH |
3133 | t = uvuni_to_utf8_flags(tmpbuf, 0x7fffffff, |
3134 | UNICODE_ALLOW_SUPER); | |
dfe13c55 | 3135 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
93524f2b | 3136 | t = (const U8*)SvPVX_const(transv); |
a0ed51b3 LW |
3137 | tlen = SvCUR(transv); |
3138 | tend = t + tlen; | |
455d824a | 3139 | Safefree(cp); |
a0ed51b3 LW |
3140 | } |
3141 | else if (!rlen && !del) { | |
3142 | r = t; rlen = tlen; rend = tend; | |
4757a243 LW |
3143 | } |
3144 | if (!squash) { | |
05d340b8 | 3145 | if ((!rlen && !del) || t == r || |
12ae5dfc | 3146 | (tlen == rlen && memEQ((char *)t, (char *)r, tlen))) |
01ec43d0 | 3147 | { |
4757a243 | 3148 | o->op_private |= OPpTRANS_IDENTICAL; |
01ec43d0 | 3149 | } |
a0ed51b3 LW |
3150 | } |
3151 | ||
3152 | while (t < tend || tfirst <= tlast) { | |
3153 | /* see if we need more "t" chars */ | |
3154 | if (tfirst > tlast) { | |
9f7f3913 | 3155 | tfirst = (I32)utf8n_to_uvuni(t, tend - t, &ulen, flags); |
a0ed51b3 | 3156 | t += ulen; |
2b9d42f0 | 3157 | if (t < tend && NATIVE_TO_UTF(*t) == 0xff) { /* illegal utf8 val indicates range */ |
ba210ebe | 3158 | t++; |
9f7f3913 | 3159 | tlast = (I32)utf8n_to_uvuni(t, tend - t, &ulen, flags); |
a0ed51b3 LW |
3160 | t += ulen; |
3161 | } | |
3162 | else | |
3163 | tlast = tfirst; | |
3164 | } | |
3165 | ||
3166 | /* now see if we need more "r" chars */ | |
3167 | if (rfirst > rlast) { | |
3168 | if (r < rend) { | |
9f7f3913 | 3169 | rfirst = (I32)utf8n_to_uvuni(r, rend - r, &ulen, flags); |
a0ed51b3 | 3170 | r += ulen; |
2b9d42f0 | 3171 | if (r < rend && NATIVE_TO_UTF(*r) == 0xff) { /* illegal utf8 val indicates range */ |
ba210ebe | 3172 | r++; |
9f7f3913 | 3173 | rlast = (I32)utf8n_to_uvuni(r, rend - r, &ulen, flags); |
a0ed51b3 LW |
3174 | r += ulen; |
3175 | } | |
3176 | else | |
3177 | rlast = rfirst; | |
3178 | } | |
3179 | else { | |
3180 | if (!havefinal++) | |
3181 | final = rlast; | |
3182 | rfirst = rlast = 0xffffffff; | |
3183 | } | |
3184 | } | |
3185 | ||
3186 | /* now see which range will peter our first, if either. */ | |
3187 | tdiff = tlast - tfirst; | |
3188 | rdiff = rlast - rfirst; | |
3189 | ||
3190 | if (tdiff <= rdiff) | |
3191 | diff = tdiff; | |
3192 | else | |
3193 | diff = rdiff; | |
3194 | ||
3195 | if (rfirst == 0xffffffff) { | |
3196 | diff = tdiff; /* oops, pretend rdiff is infinite */ | |
3197 | if (diff > 0) | |
894356b3 GS |
3198 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t%04lx\tXXXX\n", |
3199 | (long)tfirst, (long)tlast); | |
a0ed51b3 | 3200 | else |
894356b3 | 3201 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t\tXXXX\n", (long)tfirst); |
a0ed51b3 LW |
3202 | } |
3203 | else { | |
3204 | if (diff > 0) | |
894356b3 GS |
3205 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t%04lx\t%04lx\n", |
3206 | (long)tfirst, (long)(tfirst + diff), | |
3207 | (long)rfirst); | |
a0ed51b3 | 3208 | else |
894356b3 GS |
3209 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t\t%04lx\n", |
3210 | (long)tfirst, (long)rfirst); | |
a0ed51b3 LW |
3211 | |
3212 | if (rfirst + diff > max) | |
3213 | max = rfirst + diff; | |
9b877dbb | 3214 | if (!grows) |
45005bfb JH |
3215 | grows = (tfirst < rfirst && |
3216 | UNISKIP(tfirst) < UNISKIP(rfirst + diff)); | |
3217 | rfirst += diff + 1; | |
a0ed51b3 LW |
3218 | } |
3219 | tfirst += diff + 1; | |
3220 | } | |
3221 | ||
3222 | none = ++max; | |
3223 | if (del) | |
3224 | del = ++max; | |
3225 | ||
3226 | if (max > 0xffff) | |
3227 | bits = 32; | |
3228 | else if (max > 0xff) | |
3229 | bits = 16; | |
3230 | else | |
3231 | bits = 8; | |
3232 | ||
ea71c68d | 3233 | PerlMemShared_free(cPVOPo->op_pv); |
b3123a61 | 3234 | cPVOPo->op_pv = NULL; |
043e41b8 DM |
3235 | |
3236 | swash = (SV*)swash_init("utf8", "", listsv, bits, none); | |
3237 | #ifdef USE_ITHREADS | |
3238 | cPADOPo->op_padix = pad_alloc(OP_TRANS, SVs_PADTMP); | |
3239 | SvREFCNT_dec(PAD_SVl(cPADOPo->op_padix)); | |
3240 | PAD_SETSV(cPADOPo->op_padix, swash); | |
3241 | SvPADTMP_on(swash); | |
3242 | #else | |
3243 | cSVOPo->op_sv = swash; | |
3244 | #endif | |
a0ed51b3 | 3245 | SvREFCNT_dec(listsv); |
b37c2d43 | 3246 | SvREFCNT_dec(transv); |
a0ed51b3 | 3247 | |
45005bfb | 3248 | if (!del && havefinal && rlen) |
043e41b8 | 3249 | (void)hv_store((HV*)SvRV(swash), "FINAL", 5, |
b448e4fe | 3250 | newSVuv((UV)final), 0); |
a0ed51b3 | 3251 | |
9b877dbb | 3252 | if (grows) |
a0ed51b3 LW |
3253 | o->op_private |= OPpTRANS_GROWS; |
3254 | ||
b37c2d43 AL |
3255 | Safefree(tsave); |
3256 | Safefree(rsave); | |
9b877dbb | 3257 | |
eb8433b7 NC |
3258 | #ifdef PERL_MAD |
3259 | op_getmad(expr,o,'e'); | |
3260 | op_getmad(repl,o,'r'); | |
3261 | #else | |
a0ed51b3 LW |
3262 | op_free(expr); |
3263 | op_free(repl); | |
eb8433b7 | 3264 | #endif |
a0ed51b3 LW |
3265 | return o; |
3266 | } | |
3267 | ||
3268 | tbl = (short*)cPVOPo->op_pv; | |
79072805 LW |
3269 | if (complement) { |
3270 | Zero(tbl, 256, short); | |
eb160463 | 3271 | for (i = 0; i < (I32)tlen; i++) |
ec49126f | 3272 | tbl[t[i]] = -1; |
79072805 LW |
3273 | for (i = 0, j = 0; i < 256; i++) { |
3274 | if (!tbl[i]) { | |
eb160463 | 3275 | if (j >= (I32)rlen) { |
a0ed51b3 | 3276 | if (del) |
79072805 LW |
3277 | tbl[i] = -2; |
3278 | else if (rlen) | |
ec49126f | 3279 | tbl[i] = r[j-1]; |
79072805 | 3280 | else |
eb160463 | 3281 | tbl[i] = (short)i; |
79072805 | 3282 | } |
9b877dbb IH |
3283 | else { |
3284 | if (i < 128 && r[j] >= 128) | |
3285 | grows = 1; | |
ec49126f | 3286 | tbl[i] = r[j++]; |
9b877dbb | 3287 | } |
79072805 LW |
3288 | } |
3289 | } | |
05d340b8 JH |
3290 | if (!del) { |
3291 | if (!rlen) { | |
3292 | j = rlen; | |
3293 | if (!squash) | |
3294 | o->op_private |= OPpTRANS_IDENTICAL; | |
3295 | } | |
eb160463 | 3296 | else if (j >= (I32)rlen) |
05d340b8 | 3297 | j = rlen - 1; |
10db182f | 3298 | else { |
aa1f7c5b JH |
3299 | tbl = |
3300 | (short *) | |
3301 | PerlMemShared_realloc(tbl, | |
3302 | (0x101+rlen-j) * sizeof(short)); | |
10db182f YO |
3303 | cPVOPo->op_pv = (char*)tbl; |
3304 | } | |
585ec06d | 3305 | tbl[0x100] = (short)(rlen - j); |
eb160463 | 3306 | for (i=0; i < (I32)rlen - j; i++) |
8973db79 JH |
3307 | tbl[0x101+i] = r[j+i]; |
3308 | } | |
79072805 LW |
3309 | } |
3310 | else { | |
a0ed51b3 | 3311 | if (!rlen && !del) { |
79072805 | 3312 | r = t; rlen = tlen; |
5d06d08e | 3313 | if (!squash) |
4757a243 | 3314 | o->op_private |= OPpTRANS_IDENTICAL; |
79072805 | 3315 | } |
94bfe852 RGS |
3316 | else if (!squash && rlen == tlen && memEQ((char*)t, (char*)r, tlen)) { |
3317 | o->op_private |= OPpTRANS_IDENTICAL; | |
3318 | } | |
79072805 LW |
3319 | for (i = 0; i < 256; i++) |
3320 | tbl[i] = -1; | |
eb160463 GS |
3321 | for (i = 0, j = 0; i < (I32)tlen; i++,j++) { |
3322 | if (j >= (I32)rlen) { | |
a0ed51b3 | 3323 | if (del) { |
ec49126f | 3324 | if (tbl[t[i]] == -1) |
3325 | tbl[t[i]] = -2; | |
79072805 LW |
3326 | continue; |
3327 | } | |
3328 | --j; | |
3329 | } | |
9b877dbb IH |
3330 | if (tbl[t[i]] == -1) { |
3331 | if (t[i] < 128 && r[j] >= 128) | |
3332 | grows = 1; | |
ec49126f | 3333 | tbl[t[i]] = r[j]; |
9b877dbb | 3334 | } |
79072805 LW |
3335 | } |
3336 | } | |
9b877dbb IH |
3337 | if (grows) |
3338 | o->op_private |= OPpTRANS_GROWS; | |
eb8433b7 NC |
3339 | #ifdef PERL_MAD |
3340 | op_getmad(expr,o,'e'); | |
3341 | op_getmad(repl,o,'r'); | |
3342 | #else | |
79072805 LW |
3343 | op_free(expr); |
3344 | op_free(repl); | |
eb8433b7 | 3345 | #endif |
79072805 | 3346 | |
11343788 | 3347 | return o; |
79072805 LW |
3348 | } |
3349 | ||
3350 | OP * | |
864dbfa3 | 3351 | Perl_newPMOP(pTHX_ I32 type, I32 flags) |
79072805 | 3352 | { |
27da23d5 | 3353 | dVAR; |
79072805 LW |
3354 | PMOP *pmop; |
3355 | ||
b7dc083c | 3356 | NewOp(1101, pmop, 1, PMOP); |
eb160463 | 3357 | pmop->op_type = (OPCODE)type; |
22c35a8c | 3358 | pmop->op_ppaddr = PL_ppaddr[type]; |
eb160463 GS |
3359 | pmop->op_flags = (U8)flags; |
3360 | pmop->op_private = (U8)(0 | (flags >> 8)); | |
79072805 | 3361 | |
3280af22 | 3362 | if (PL_hints & HINT_RE_TAINT) |
c737faaf | 3363 | pmop->op_pmflags |= PMf_RETAINT; |
3280af22 | 3364 | if (PL_hints & HINT_LOCALE) |
c737faaf YO |
3365 | pmop->op_pmflags |= PMf_LOCALE; |
3366 | ||
36477c24 | 3367 | |
debc9467 | 3368 | #ifdef USE_ITHREADS |
402d2eb1 NC |
3369 | assert(SvPOK(PL_regex_pad[0])); |
3370 | if (SvCUR(PL_regex_pad[0])) { | |
3371 | /* Pop off the "packed" IV from the end. */ | |
3372 | SV *const repointer_list = PL_regex_pad[0]; | |
3373 | const char *p = SvEND(repointer_list) - sizeof(IV); | |
3374 | const IV offset = *((IV*)p); | |
3375 | ||
3376 | assert(SvCUR(repointer_list) % sizeof(IV) == 0); | |
3377 | ||
3378 | SvEND_set(repointer_list, p); | |
3379 | ||
110f3028 | 3380 | pmop->op_pmoffset = offset; |
14a49a24 NC |
3381 | /* This slot should be free, so assert this: */ |
3382 | assert(PL_regex_pad[offset] == &PL_sv_undef); | |
551405c4 | 3383 | } else { |
14a49a24 | 3384 | SV * const repointer = &PL_sv_undef; |
9a8b6709 | 3385 | av_push(PL_regex_padav, repointer); |
551405c4 AL |
3386 | pmop->op_pmoffset = av_len(PL_regex_padav); |
3387 | PL_regex_pad = AvARRAY(PL_regex_padav); | |
13137afc | 3388 | } |
debc9467 | 3389 | #endif |
1eb1540c | 3390 | |
463d09e6 | 3391 | return CHECKOP(type, pmop); |
79072805 LW |
3392 | } |
3393 | ||
131b3ad0 DM |
3394 | /* Given some sort of match op o, and an expression expr containing a |
3395 | * pattern, either compile expr into a regex and attach it to o (if it's | |
3396 | * constant), or convert expr into a runtime regcomp op sequence (if it's | |
3397 | * not) | |
3398 | * | |
3399 | * isreg indicates that the pattern is part of a regex construct, eg | |
3400 | * $x =~ /pattern/ or split /pattern/, as opposed to $x =~ $pattern or | |
3401 | * split "pattern", which aren't. In the former case, expr will be a list | |
3402 | * if the pattern contains more than one term (eg /a$b/) or if it contains | |
3403 | * a replacement, ie s/// or tr///. | |
3404 | */ | |
3405 | ||
79072805 | 3406 | OP * |
131b3ad0 | 3407 | Perl_pmruntime(pTHX_ OP *o, OP *expr, bool isreg) |
79072805 | 3408 | { |
27da23d5 | 3409 | dVAR; |
79072805 LW |
3410 | PMOP *pm; |
3411 | LOGOP *rcop; | |
ce862d02 | 3412 | I32 repl_has_vars = 0; |
5f66b61c | 3413 | OP* repl = NULL; |
131b3ad0 DM |
3414 | bool reglist; |
3415 | ||
3416 | if (o->op_type == OP_SUBST || o->op_type == OP_TRANS) { | |
3417 | /* last element in list is the replacement; pop it */ | |
3418 | OP* kid; | |
3419 | repl = cLISTOPx(expr)->op_last; | |
3420 | kid = cLISTOPx(expr)->op_first; | |
3421 | while (kid->op_sibling != repl) | |
3422 | kid = kid->op_sibling; | |
5f66b61c | 3423 | kid->op_sibling = NULL; |
131b3ad0 DM |
3424 | cLISTOPx(expr)->op_last = kid; |
3425 | } | |
79072805 | 3426 | |
131b3ad0 DM |
3427 | if (isreg && expr->op_type == OP_LIST && |
3428 | cLISTOPx(expr)->op_first->op_sibling == cLISTOPx(expr)->op_last) | |
3429 | { | |
3430 | /* convert single element list to element */ | |
0bd48802 | 3431 | OP* const oe = expr; |
131b3ad0 | 3432 | expr = cLISTOPx(oe)->op_first->op_sibling; |
5f66b61c AL |
3433 | cLISTOPx(oe)->op_first->op_sibling = NULL; |
3434 | cLISTOPx(oe)->op_last = NULL; | |
131b3ad0 DM |
3435 | op_free(oe); |
3436 | } | |
3437 | ||
3438 | if (o->op_type == OP_TRANS) { | |
11343788 | 3439 | return pmtrans(o, expr, repl); |
131b3ad0 DM |
3440 | } |
3441 | ||
3442 | reglist = isreg && expr->op_type == OP_LIST; | |
3443 | if (reglist) | |
3444 | op_null(expr); | |
79072805 | 3445 | |
3280af22 | 3446 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 3447 | pm = (PMOP*)o; |
79072805 LW |
3448 | |
3449 | if (expr->op_type == OP_CONST) { | |
b9ad30b4 | 3450 | SV *pat = ((SVOP*)expr)->op_sv; |
c737faaf | 3451 | U32 pm_flags = pm->op_pmflags & PMf_COMPILETIME; |
5c144d81 | 3452 | |
0ac6acae AB |
3453 | if (o->op_flags & OPf_SPECIAL) |
3454 | pm_flags |= RXf_SPLIT; | |
5c144d81 | 3455 | |
b9ad30b4 NC |
3456 | if (DO_UTF8(pat)) { |
3457 | assert (SvUTF8(pat)); | |
3458 | } else if (SvUTF8(pat)) { | |
3459 | /* Not doing UTF-8, despite what the SV says. Is this only if we're | |
3460 | trapped in use 'bytes'? */ | |
3461 | /* Make a copy of the octet sequence, but without the flag on, as | |
3462 | the compiler now honours the SvUTF8 flag on pat. */ | |
3463 | STRLEN len; | |
3464 | const char *const p = SvPV(pat, len); | |
3465 | pat = newSVpvn_flags(p, len, SVs_TEMP); | |
3466 | } | |
0ac6acae | 3467 | |
3ab4a224 | 3468 | PM_SETRE(pm, CALLREGCOMP(pat, pm_flags)); |
c737faaf | 3469 | |
eb8433b7 NC |
3470 | #ifdef PERL_MAD |
3471 | op_getmad(expr,(OP*)pm,'e'); | |
3472 | #else | |
79072805 | 3473 | op_free(expr); |
eb8433b7 | 3474 | #endif |
79072805 LW |
3475 | } |
3476 | else { | |
3280af22 | 3477 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) |
1c846c1f | 3478 | expr = newUNOP((!(PL_hints & HINT_RE_EVAL) |
2cd61cdb IZ |
3479 | ? OP_REGCRESET |
3480 | : OP_REGCMAYBE),0,expr); | |
463ee0b2 | 3481 | |
b7dc083c | 3482 | NewOp(1101, rcop, 1, LOGOP); |
79072805 | 3483 | rcop->op_type = OP_REGCOMP; |
22c35a8c | 3484 | rcop->op_ppaddr = PL_ppaddr[OP_REGCOMP]; |
79072805 | 3485 | rcop->op_first = scalar(expr); |
131b3ad0 DM |
3486 | rcop->op_flags |= OPf_KIDS |
3487 | | ((PL_hints & HINT_RE_EVAL) ? OPf_SPECIAL : 0) | |
3488 | | (reglist ? OPf_STACKED : 0); | |
79072805 | 3489 | rcop->op_private = 1; |
11343788 | 3490 | rcop->op_other = o; |
131b3ad0 DM |
3491 | if (reglist) |
3492 | rcop->op_targ = pad_alloc(rcop->op_type, SVs_PADTMP); | |
3493 | ||
b5c19bd7 DM |
3494 | /* /$x/ may cause an eval, since $x might be qr/(?{..})/ */ |
3495 | PL_cv_has_eval = 1; | |
79072805 LW |
3496 | |
3497 | /* establish postfix order */ | |
3280af22 | 3498 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) { |
463ee0b2 LW |
3499 | LINKLIST(expr); |
3500 | rcop->op_next = expr; | |
3501 | ((UNOP*)expr)->op_first->op_next = (OP*)rcop; | |
3502 | } | |
3503 | else { | |
3504 | rcop->op_next = LINKLIST(expr); | |
3505 | expr->op_next = (OP*)rcop; | |
3506 | } | |
79072805 | 3507 | |
11343788 | 3508 | prepend_elem(o->op_type, scalar((OP*)rcop), o); |
79072805 LW |
3509 | } |
3510 | ||
3511 | if (repl) { | |
748a9306 | 3512 | OP *curop; |
0244c3a4 | 3513 | if (pm->op_pmflags & PMf_EVAL) { |
6136c704 | 3514 | curop = NULL; |
670a9cb2 DM |
3515 | if (CopLINE(PL_curcop) < (line_t)PL_parser->multi_end) |
3516 | CopLINE_set(PL_curcop, (line_t)PL_parser->multi_end); | |
0244c3a4 | 3517 | } |
748a9306 LW |
3518 | else if (repl->op_type == OP_CONST) |
3519 | curop = repl; | |
79072805 | 3520 | else { |
c445ea15 | 3521 | OP *lastop = NULL; |
79072805 | 3522 | for (curop = LINKLIST(repl); curop!=repl; curop = LINKLIST(curop)) { |
e80b829c | 3523 | if (curop->op_type == OP_SCOPE |
10250113 | 3524 | || curop->op_type == OP_LEAVE |
e80b829c | 3525 | || (PL_opargs[curop->op_type] & OA_DANGEROUS)) { |
79072805 | 3526 | if (curop->op_type == OP_GV) { |
6136c704 | 3527 | GV * const gv = cGVOPx_gv(curop); |
ce862d02 | 3528 | repl_has_vars = 1; |
f702bf4a | 3529 | if (strchr("&`'123456789+-\016\022", *GvENAME(gv))) |
79072805 LW |
3530 | break; |
3531 | } | |
3532 | else if (curop->op_type == OP_RV2CV) | |
3533 | break; | |
3534 | else if (curop->op_type == OP_RV2SV || | |
3535 | curop->op_type == OP_RV2AV || | |
3536 | curop->op_type == OP_RV2HV || | |
3537 | curop->op_type == OP_RV2GV) { | |
3538 | if (lastop && lastop->op_type != OP_GV) /*funny deref?*/ | |
3539 | break; | |
3540 | } | |
748a9306 LW |
3541 | else if (curop->op_type == OP_PADSV || |
3542 | curop->op_type == OP_PADAV || | |
3543 | curop->op_type == OP_PADHV || | |
e80b829c RGS |
3544 | curop->op_type == OP_PADANY) |
3545 | { | |
ce862d02 | 3546 | repl_has_vars = 1; |
748a9306 | 3547 | } |
1167e5da | 3548 | else if (curop->op_type == OP_PUSHRE) |
6f207bd3 | 3549 | NOOP; /* Okay here, dangerous in newASSIGNOP */ |
79072805 LW |
3550 | else |
3551 | break; | |
3552 | } | |
3553 | lastop = curop; | |
3554 | } | |
748a9306 | 3555 | } |
ce862d02 | 3556 | if (curop == repl |
e80b829c RGS |
3557 | && !(repl_has_vars |
3558 | && (!PM_GETRE(pm) | |
07bc277f | 3559 | || RX_EXTFLAGS(PM_GETRE(pm)) & RXf_EVAL_SEEN))) |
3be69782 | 3560 | { |
748a9306 | 3561 | pm->op_pmflags |= PMf_CONST; /* const for long enough */ |
11343788 | 3562 | prepend_elem(o->op_type, scalar(repl), o); |
748a9306 LW |
3563 | } |
3564 | else { | |
aaa362c4 | 3565 | if (curop == repl && !PM_GETRE(pm)) { /* Has variables. */ |
ce862d02 | 3566 | pm->op_pmflags |= PMf_MAYBE_CONST; |
ce862d02 | 3567 | } |
b7dc083c | 3568 | NewOp(1101, rcop, 1, LOGOP); |
748a9306 | 3569 | rcop->op_type = OP_SUBSTCONT; |
22c35a8c | 3570 | rcop->op_ppaddr = PL_ppaddr[OP_SUBSTCONT]; |
748a9306 LW |
3571 | rcop->op_first = scalar(repl); |
3572 | rcop->op_flags |= OPf_KIDS; | |
3573 | rcop->op_private = 1; | |
11343788 | 3574 | rcop->op_other = o; |
748a9306 LW |
3575 | |
3576 | /* establish postfix order */ | |
3577 | rcop->op_next = LINKLIST(repl); | |
3578 | repl->op_next = (OP*)rcop; | |
3579 | ||
20e98b0f | 3580 | pm->op_pmreplrootu.op_pmreplroot = scalar((OP*)rcop); |
29f2e912 NC |
3581 | assert(!(pm->op_pmflags & PMf_ONCE)); |
3582 | pm->op_pmstashstartu.op_pmreplstart = LINKLIST(rcop); | |
748a9306 | 3583 | rcop->op_next = 0; |
79072805 LW |
3584 | } |
3585 | } | |
3586 | ||
3587 | return (OP*)pm; | |
3588 | } | |
3589 | ||
3590 | OP * | |
864dbfa3 | 3591 | Perl_newSVOP(pTHX_ I32 type, I32 flags, SV *sv) |
79072805 | 3592 | { |
27da23d5 | 3593 | dVAR; |
79072805 | 3594 | SVOP *svop; |
b7dc083c | 3595 | NewOp(1101, svop, 1, SVOP); |
eb160463 | 3596 | svop->op_type = (OPCODE)type; |
22c35a8c | 3597 | svop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
3598 | svop->op_sv = sv; |
3599 | svop->op_next = (OP*)svop; | |
eb160463 | 3600 | svop->op_flags = (U8)flags; |
22c35a8c | 3601 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 3602 | scalar((OP*)svop); |
22c35a8c | 3603 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 3604 | svop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 3605 | return CHECKOP(type, svop); |
79072805 LW |
3606 | } |
3607 | ||
392d04bb | 3608 | #ifdef USE_ITHREADS |
79072805 | 3609 | OP * |
350de78d GS |
3610 | Perl_newPADOP(pTHX_ I32 type, I32 flags, SV *sv) |
3611 | { | |
27da23d5 | 3612 | dVAR; |
350de78d GS |
3613 | PADOP *padop; |
3614 | NewOp(1101, padop, 1, PADOP); | |
eb160463 | 3615 | padop->op_type = (OPCODE)type; |
350de78d GS |
3616 | padop->op_ppaddr = PL_ppaddr[type]; |
3617 | padop->op_padix = pad_alloc(type, SVs_PADTMP); | |
dd2155a4 DM |
3618 | SvREFCNT_dec(PAD_SVl(padop->op_padix)); |
3619 | PAD_SETSV(padop->op_padix, sv); | |
58182927 NC |
3620 | assert(sv); |
3621 | SvPADTMP_on(sv); | |
350de78d | 3622 | padop->op_next = (OP*)padop; |
eb160463 | 3623 | padop->op_flags = (U8)flags; |
350de78d GS |
3624 | if (PL_opargs[type] & OA_RETSCALAR) |
3625 | scalar((OP*)padop); | |
3626 | if (PL_opargs[type] & OA_TARGET) | |
3627 | padop->op_targ = pad_alloc(type, SVs_PADTMP); | |
3628 | return CHECKOP(type, padop); | |
3629 | } | |
392d04bb | 3630 | #endif |
350de78d GS |
3631 | |
3632 | OP * | |
864dbfa3 | 3633 | Perl_newGVOP(pTHX_ I32 type, I32 flags, GV *gv) |
79072805 | 3634 | { |
27da23d5 | 3635 | dVAR; |
58182927 | 3636 | assert(gv); |
350de78d | 3637 | #ifdef USE_ITHREADS |
58182927 | 3638 | GvIN_PAD_on(gv); |
ff8997d7 | 3639 | return newPADOP(type, flags, SvREFCNT_inc_simple_NN(gv)); |
350de78d | 3640 | #else |
ff8997d7 | 3641 | return newSVOP(type, flags, SvREFCNT_inc_simple_NN(gv)); |
350de78d | 3642 | #endif |
79072805 LW |
3643 | } |
3644 | ||
3645 | OP * | |
864dbfa3 | 3646 | Perl_newPVOP(pTHX_ I32 type, I32 flags, char *pv) |
79072805 | 3647 | { |
27da23d5 | 3648 | dVAR; |
79072805 | 3649 | PVOP *pvop; |
b7dc083c | 3650 | NewOp(1101, pvop, 1, PVOP); |
eb160463 | 3651 | pvop->op_type = (OPCODE)type; |
22c35a8c | 3652 | pvop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
3653 | pvop->op_pv = pv; |
3654 | pvop->op_next = (OP*)pvop; | |
eb160463 | 3655 | pvop->op_flags = (U8)flags; |
22c35a8c | 3656 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 3657 | scalar((OP*)pvop); |
22c35a8c | 3658 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 3659 | pvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 3660 | return CHECKOP(type, pvop); |
79072805 LW |
3661 | } |
3662 | ||
eb8433b7 NC |
3663 | #ifdef PERL_MAD |
3664 | OP* | |
3665 | #else | |
79072805 | 3666 | void |
eb8433b7 | 3667 | #endif |
864dbfa3 | 3668 | Perl_package(pTHX_ OP *o) |
79072805 | 3669 | { |
97aff369 | 3670 | dVAR; |
bf070237 | 3671 | SV *const sv = cSVOPo->op_sv; |
eb8433b7 NC |
3672 | #ifdef PERL_MAD |
3673 | OP *pegop; | |
3674 | #endif | |
79072805 | 3675 | |
3280af22 NIS |
3676 | save_hptr(&PL_curstash); |
3677 | save_item(PL_curstname); | |
de11ba31 | 3678 | |
bf070237 | 3679 | PL_curstash = gv_stashsv(sv, GV_ADD); |
e1a479c5 | 3680 | |
bf070237 | 3681 | sv_setsv(PL_curstname, sv); |
de11ba31 | 3682 | |
7ad382f4 | 3683 | PL_hints |= HINT_BLOCK_SCOPE; |
53a7735b DM |
3684 | PL_parser->copline = NOLINE; |
3685 | PL_parser->expect = XSTATE; | |
eb8433b7 NC |
3686 | |
3687 | #ifndef PERL_MAD | |
3688 | op_free(o); | |
3689 | #else | |
3690 | if (!PL_madskills) { | |
3691 | op_free(o); | |
1d866c12 | 3692 | return NULL; |
eb8433b7 NC |
3693 | } |
3694 | ||
3695 | pegop = newOP(OP_NULL,0); | |
3696 | op_getmad(o,pegop,'P'); | |
3697 | return pegop; | |
3698 | #endif | |
79072805 LW |
3699 | } |
3700 | ||
eb8433b7 NC |
3701 | #ifdef PERL_MAD |
3702 | OP* | |
3703 | #else | |
85e6fe83 | 3704 | void |
eb8433b7 | 3705 | #endif |
88d95a4d | 3706 | Perl_utilize(pTHX_ int aver, I32 floor, OP *version, OP *idop, OP *arg) |
85e6fe83 | 3707 | { |
97aff369 | 3708 | dVAR; |
a0d0e21e | 3709 | OP *pack; |
a0d0e21e | 3710 | OP *imop; |
b1cb66bf | 3711 | OP *veop; |
eb8433b7 NC |
3712 | #ifdef PERL_MAD |
3713 | OP *pegop = newOP(OP_NULL,0); | |
3714 | #endif | |
85e6fe83 | 3715 | |
88d95a4d | 3716 | if (idop->op_type != OP_CONST) |
cea2e8a9 | 3717 | Perl_croak(aTHX_ "Module name must be constant"); |
85e6fe83 | 3718 | |
eb8433b7 NC |
3719 | if (PL_madskills) |
3720 | op_getmad(idop,pegop,'U'); | |
3721 | ||
5f66b61c | 3722 | veop = NULL; |
b1cb66bf | 3723 | |
aec46f14 | 3724 | if (version) { |
551405c4 | 3725 | SV * const vesv = ((SVOP*)version)->op_sv; |
b1cb66bf | 3726 | |
eb8433b7 NC |
3727 | if (PL_madskills) |
3728 | op_getmad(version,pegop,'V'); | |
aec46f14 | 3729 | if (!arg && !SvNIOKp(vesv)) { |
b1cb66bf | 3730 | arg = version; |
3731 | } | |
3732 | else { | |
3733 | OP *pack; | |
0f79a09d | 3734 | SV *meth; |
b1cb66bf | 3735 | |
44dcb63b | 3736 | if (version->op_type != OP_CONST || !SvNIOKp(vesv)) |
cea2e8a9 | 3737 | Perl_croak(aTHX_ "Version number must be constant number"); |
b1cb66bf | 3738 | |
88d95a4d JH |
3739 | /* Make copy of idop so we don't free it twice */ |
3740 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)idop)->op_sv)); | |
b1cb66bf | 3741 | |
3742 | /* Fake up a method call to VERSION */ | |
18916d0d | 3743 | meth = newSVpvs_share("VERSION"); |
b1cb66bf | 3744 | veop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, |
3745 | append_elem(OP_LIST, | |
0f79a09d GS |
3746 | prepend_elem(OP_LIST, pack, list(version)), |
3747 | newSVOP(OP_METHOD_NAMED, 0, meth))); | |
b1cb66bf | 3748 | } |
3749 | } | |
aeea060c | 3750 | |
a0d0e21e | 3751 | /* Fake up an import/unimport */ |
eb8433b7 NC |
3752 | if (arg && arg->op_type == OP_STUB) { |
3753 | if (PL_madskills) | |
3754 | op_getmad(arg,pegop,'S'); | |
4633a7c4 | 3755 | imop = arg; /* no import on explicit () */ |
eb8433b7 | 3756 | } |
88d95a4d | 3757 | else if (SvNIOKp(((SVOP*)idop)->op_sv)) { |
5f66b61c | 3758 | imop = NULL; /* use 5.0; */ |
468aa647 RGS |
3759 | if (!aver) |
3760 | idop->op_private |= OPpCONST_NOVER; | |
b1cb66bf | 3761 | } |
4633a7c4 | 3762 | else { |
0f79a09d GS |
3763 | SV *meth; |
3764 | ||
eb8433b7 NC |
3765 | if (PL_madskills) |
3766 | op_getmad(arg,pegop,'A'); | |
3767 | ||
88d95a4d JH |
3768 | /* Make copy of idop so we don't free it twice */ |
3769 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)idop)->op_sv)); | |
0f79a09d GS |
3770 | |
3771 | /* Fake up a method call to import/unimport */ | |
427d62a4 | 3772 | meth = aver |
18916d0d | 3773 | ? newSVpvs_share("import") : newSVpvs_share("unimport"); |
4633a7c4 | 3774 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, |
0f79a09d GS |
3775 | append_elem(OP_LIST, |
3776 | prepend_elem(OP_LIST, pack, list(arg)), | |
3777 | newSVOP(OP_METHOD_NAMED, 0, meth))); | |
4633a7c4 LW |
3778 | } |
3779 | ||
a0d0e21e | 3780 | /* Fake up the BEGIN {}, which does its thing immediately. */ |
09bef843 | 3781 | newATTRSUB(floor, |
18916d0d | 3782 | newSVOP(OP_CONST, 0, newSVpvs_share("BEGIN")), |
5f66b61c AL |
3783 | NULL, |
3784 | NULL, | |
a0d0e21e | 3785 | append_elem(OP_LINESEQ, |
b1cb66bf | 3786 | append_elem(OP_LINESEQ, |
bd61b366 SS |
3787 | newSTATEOP(0, NULL, newUNOP(OP_REQUIRE, 0, idop)), |
3788 | newSTATEOP(0, NULL, veop)), | |
3789 | newSTATEOP(0, NULL, imop) )); | |
85e6fe83 | 3790 | |
70f5e4ed JH |
3791 | /* The "did you use incorrect case?" warning used to be here. |
3792 | * The problem is that on case-insensitive filesystems one | |
3793 | * might get false positives for "use" (and "require"): | |
3794 | * "use Strict" or "require CARP" will work. This causes | |
3795 | * portability problems for the script: in case-strict | |
3796 | * filesystems the script will stop working. | |
3797 | * | |
3798 | * The "incorrect case" warning checked whether "use Foo" | |
3799 | * imported "Foo" to your namespace, but that is wrong, too: | |
3800 | * there is no requirement nor promise in the language that | |
3801 | * a Foo.pm should or would contain anything in package "Foo". | |
3802 | * | |
3803 | * There is very little Configure-wise that can be done, either: | |
3804 | * the case-sensitivity of the build filesystem of Perl does not | |
3805 | * help in guessing the case-sensitivity of the runtime environment. | |
3806 | */ | |
18fc9488 | 3807 | |
c305c6a0 | 3808 | PL_hints |= HINT_BLOCK_SCOPE; |
53a7735b DM |
3809 | PL_parser->copline = NOLINE; |
3810 | PL_parser->expect = XSTATE; | |
8ec8fbef | 3811 | PL_cop_seqmax++; /* Purely for B::*'s benefit */ |
eb8433b7 NC |
3812 | |
3813 | #ifdef PERL_MAD | |
3814 | if (!PL_madskills) { | |
3815 | /* FIXME - don't allocate pegop if !PL_madskills */ | |
3816 | op_free(pegop); | |
1d866c12 | 3817 | return NULL; |
eb8433b7 NC |
3818 | } |
3819 | return pegop; | |
3820 | #endif | |
85e6fe83 LW |
3821 | } |
3822 | ||
7d3fb230 | 3823 | /* |
ccfc67b7 JH |
3824 | =head1 Embedding Functions |
3825 | ||
7d3fb230 BS |
3826 | =for apidoc load_module |
3827 | ||
3828 | Loads the module whose name is pointed to by the string part of name. | |
3829 | Note that the actual module name, not its filename, should be given. | |
3830 | Eg, "Foo::Bar" instead of "Foo/Bar.pm". flags can be any of | |
3831 | PERL_LOADMOD_DENY, PERL_LOADMOD_NOIMPORT, or PERL_LOADMOD_IMPORT_OPS | |
3832 | (or 0 for no flags). ver, if specified, provides version semantics | |
3833 | similar to C<use Foo::Bar VERSION>. The optional trailing SV* | |
3834 | arguments can be used to specify arguments to the module's import() | |
3835 | method, similar to C<use Foo::Bar VERSION LIST>. | |
3836 | ||
3837 | =cut */ | |
3838 | ||
e4783991 GS |
3839 | void |
3840 | Perl_load_module(pTHX_ U32 flags, SV *name, SV *ver, ...) | |
3841 | { | |
3842 | va_list args; | |
3843 | va_start(args, ver); | |
3844 | vload_module(flags, name, ver, &args); | |
3845 | va_end(args); | |
3846 | } | |
3847 | ||
3848 | #ifdef PERL_IMPLICIT_CONTEXT | |
3849 | void | |
3850 | Perl_load_module_nocontext(U32 flags, SV *name, SV *ver, ...) | |
3851 | { | |
3852 | dTHX; | |
3853 | va_list args; | |
3854 | va_start(args, ver); | |
3855 | vload_module(flags, name, ver, &args); | |
3856 | va_end(args); | |
3857 | } | |
3858 | #endif | |
3859 | ||
3860 | void | |
3861 | Perl_vload_module(pTHX_ U32 flags, SV *name, SV *ver, va_list *args) | |
3862 | { | |
97aff369 | 3863 | dVAR; |
551405c4 | 3864 | OP *veop, *imop; |
e4783991 | 3865 | |
551405c4 | 3866 | OP * const modname = newSVOP(OP_CONST, 0, name); |
e4783991 GS |
3867 | modname->op_private |= OPpCONST_BARE; |
3868 | if (ver) { | |
3869 | veop = newSVOP(OP_CONST, 0, ver); | |
3870 | } | |
3871 | else | |
5f66b61c | 3872 | veop = NULL; |
e4783991 GS |
3873 | if (flags & PERL_LOADMOD_NOIMPORT) { |
3874 | imop = sawparens(newNULLLIST()); | |
3875 | } | |
3876 | else if (flags & PERL_LOADMOD_IMPORT_OPS) { | |
3877 | imop = va_arg(*args, OP*); | |
3878 | } | |
3879 | else { | |
3880 | SV *sv; | |
5f66b61c | 3881 | imop = NULL; |
e4783991 GS |
3882 | sv = va_arg(*args, SV*); |
3883 | while (sv) { | |
3884 | imop = append_elem(OP_LIST, imop, newSVOP(OP_CONST, 0, sv)); | |
3885 | sv = va_arg(*args, SV*); | |
3886 | } | |
3887 | } | |
81885997 | 3888 | |
53a7735b DM |
3889 | /* utilize() fakes up a BEGIN { require ..; import ... }, so make sure |
3890 | * that it has a PL_parser to play with while doing that, and also | |
3891 | * that it doesn't mess with any existing parser, by creating a tmp | |
3892 | * new parser with lex_start(). This won't actually be used for much, | |
3893 | * since pp_require() will create another parser for the real work. */ | |
3894 | ||
3895 | ENTER; | |
3896 | SAVEVPTR(PL_curcop); | |
5486870f | 3897 | lex_start(NULL, NULL, FALSE); |
53a7735b DM |
3898 | utilize(!(flags & PERL_LOADMOD_DENY), start_subparse(FALSE, 0), |
3899 | veop, modname, imop); | |
3900 | LEAVE; | |
e4783991 GS |
3901 | } |
3902 | ||
79072805 | 3903 | OP * |
850e8516 | 3904 | Perl_dofile(pTHX_ OP *term, I32 force_builtin) |
78ca652e | 3905 | { |
97aff369 | 3906 | dVAR; |
78ca652e | 3907 | OP *doop; |
a0714e2c | 3908 | GV *gv = NULL; |
78ca652e | 3909 | |
850e8516 | 3910 | if (!force_builtin) { |
fafc274c | 3911 | gv = gv_fetchpvs("do", GV_NOTQUAL, SVt_PVCV); |
850e8516 | 3912 | if (!(gv && GvCVu(gv) && GvIMPORTED_CV(gv))) { |
a4fc7abc | 3913 | GV * const * const gvp = (GV**)hv_fetchs(PL_globalstash, "do", FALSE); |
a0714e2c | 3914 | gv = gvp ? *gvp : NULL; |
850e8516 RGS |
3915 | } |
3916 | } | |
78ca652e | 3917 | |
b9f751c0 | 3918 | if (gv && GvCVu(gv) && GvIMPORTED_CV(gv)) { |
78ca652e GS |
3919 | doop = ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, |
3920 | append_elem(OP_LIST, term, | |
3921 | scalar(newUNOP(OP_RV2CV, 0, | |
d4c19fe8 | 3922 | newGVOP(OP_GV, 0, gv)))))); |
78ca652e GS |
3923 | } |
3924 | else { | |
3925 | doop = newUNOP(OP_DOFILE, 0, scalar(term)); | |
3926 | } | |
3927 | return doop; | |
3928 | } | |
3929 | ||
3930 | OP * | |
864dbfa3 | 3931 | Perl_newSLICEOP(pTHX_ I32 flags, OP *subscript, OP *listval) |
79072805 LW |
3932 | { |
3933 | return newBINOP(OP_LSLICE, flags, | |
8990e307 LW |
3934 | list(force_list(subscript)), |
3935 | list(force_list(listval)) ); | |
79072805 LW |
3936 | } |
3937 | ||
76e3520e | 3938 | STATIC I32 |
504618e9 | 3939 | S_is_list_assignment(pTHX_ register const OP *o) |
79072805 | 3940 | { |
1496a290 AL |
3941 | unsigned type; |
3942 | U8 flags; | |
3943 | ||
11343788 | 3944 | if (!o) |
79072805 LW |
3945 | return TRUE; |
3946 | ||
1496a290 | 3947 | if ((o->op_type == OP_NULL) && (o->op_flags & OPf_KIDS)) |
11343788 | 3948 | o = cUNOPo->op_first; |
79072805 | 3949 | |
1496a290 AL |
3950 | flags = o->op_flags; |
3951 | type = o->op_type; | |
3952 | if (type == OP_COND_EXPR) { | |
504618e9 AL |
3953 | const I32 t = is_list_assignment(cLOGOPo->op_first->op_sibling); |
3954 | const I32 f = is_list_assignment(cLOGOPo->op_first->op_sibling->op_sibling); | |
79072805 LW |
3955 | |
3956 | if (t && f) | |
3957 | return TRUE; | |
3958 | if (t || f) | |
3959 | yyerror("Assignment to both a list and a scalar"); | |
3960 | return FALSE; | |
3961 | } | |
3962 | ||
1496a290 AL |
3963 | if (type == OP_LIST && |
3964 | (flags & OPf_WANT) == OPf_WANT_SCALAR && | |
95f0a2f1 SB |
3965 | o->op_private & OPpLVAL_INTRO) |
3966 | return FALSE; | |
3967 | ||
1496a290 AL |
3968 | if (type == OP_LIST || flags & OPf_PARENS || |
3969 | type == OP_RV2AV || type == OP_RV2HV || | |
3970 | type == OP_ASLICE || type == OP_HSLICE) | |
79072805 LW |
3971 | return TRUE; |
3972 | ||
1496a290 | 3973 | if (type == OP_PADAV || type == OP_PADHV) |
93a17b20 LW |
3974 | return TRUE; |
3975 | ||
1496a290 | 3976 | if (type == OP_RV2SV) |
79072805 LW |
3977 | return FALSE; |
3978 | ||
3979 | return FALSE; | |
3980 | } | |
3981 | ||
3982 | OP * | |
864dbfa3 | 3983 | Perl_newASSIGNOP(pTHX_ I32 flags, OP *left, I32 optype, OP *right) |
79072805 | 3984 | { |
97aff369 | 3985 | dVAR; |
11343788 | 3986 | OP *o; |
79072805 | 3987 | |
a0d0e21e | 3988 | if (optype) { |
c963b151 | 3989 | if (optype == OP_ANDASSIGN || optype == OP_ORASSIGN || optype == OP_DORASSIGN) { |
a0d0e21e LW |
3990 | return newLOGOP(optype, 0, |
3991 | mod(scalar(left), optype), | |
3992 | newUNOP(OP_SASSIGN, 0, scalar(right))); | |
3993 | } | |
3994 | else { | |
3995 | return newBINOP(optype, OPf_STACKED, | |
3996 | mod(scalar(left), optype), scalar(right)); | |
3997 | } | |
3998 | } | |
3999 | ||
504618e9 | 4000 | if (is_list_assignment(left)) { |
6dbe9451 NC |
4001 | static const char no_list_state[] = "Initialization of state variables" |
4002 | " in list context currently forbidden"; | |
10c8fecd | 4003 | OP *curop; |
fafafbaf | 4004 | bool maybe_common_vars = TRUE; |
10c8fecd | 4005 | |
3280af22 | 4006 | PL_modcount = 0; |
dbfe47cf RD |
4007 | /* Grandfathering $[ assignment here. Bletch.*/ |
4008 | /* Only simple assignments like C<< ($[) = 1 >> are allowed */ | |
fe5bfecd | 4009 | PL_eval_start = (left->op_type == OP_CONST) ? right : NULL; |
463ee0b2 | 4010 | left = mod(left, OP_AASSIGN); |
3280af22 NIS |
4011 | if (PL_eval_start) |
4012 | PL_eval_start = 0; | |
dbfe47cf | 4013 | else if (left->op_type == OP_CONST) { |
eb8433b7 | 4014 | /* FIXME for MAD */ |
dbfe47cf RD |
4015 | /* Result of assignment is always 1 (or we'd be dead already) */ |
4016 | return newSVOP(OP_CONST, 0, newSViv(1)); | |
a0d0e21e | 4017 | } |
10c8fecd GS |
4018 | curop = list(force_list(left)); |
4019 | o = newBINOP(OP_AASSIGN, flags, list(force_list(right)), curop); | |
eb160463 | 4020 | o->op_private = (U8)(0 | (flags >> 8)); |
dd2155a4 | 4021 | |
fafafbaf RD |
4022 | if ((left->op_type == OP_LIST |
4023 | || (left->op_type == OP_NULL && left->op_targ == OP_LIST))) | |
4024 | { | |
4025 | OP* lop = ((LISTOP*)left)->op_first; | |
4026 | maybe_common_vars = FALSE; | |
4027 | while (lop) { | |
4028 | if (lop->op_type == OP_PADSV || | |
4029 | lop->op_type == OP_PADAV || | |
4030 | lop->op_type == OP_PADHV || | |
4031 | lop->op_type == OP_PADANY) { | |
4032 | if (!(lop->op_private & OPpLVAL_INTRO)) | |
4033 | maybe_common_vars = TRUE; | |
4034 | ||
4035 | if (lop->op_private & OPpPAD_STATE) { | |
4036 | if (left->op_private & OPpLVAL_INTRO) { | |
4037 | /* Each variable in state($a, $b, $c) = ... */ | |
4038 | } | |
4039 | else { | |
4040 | /* Each state variable in | |
4041 | (state $a, my $b, our $c, $d, undef) = ... */ | |
4042 | } | |
4043 | yyerror(no_list_state); | |
4044 | } else { | |
4045 | /* Each my variable in | |
4046 | (state $a, my $b, our $c, $d, undef) = ... */ | |
4047 | } | |
4048 | } else if (lop->op_type == OP_UNDEF || | |
4049 | lop->op_type == OP_PUSHMARK) { | |
4050 | /* undef may be interesting in | |
4051 | (state $a, undef, state $c) */ | |
4052 | } else { | |
4053 | /* Other ops in the list. */ | |
4054 | maybe_common_vars = TRUE; | |
4055 | } | |
4056 | lop = lop->op_sibling; | |
4057 | } | |
4058 | } | |
4059 | else if ((left->op_private & OPpLVAL_INTRO) | |
4060 | && ( left->op_type == OP_PADSV | |
4061 | || left->op_type == OP_PADAV | |
4062 | || left->op_type == OP_PADHV | |
4063 | || left->op_type == OP_PADANY)) | |
4064 | { | |
4065 | maybe_common_vars = FALSE; | |
4066 | if (left->op_private & OPpPAD_STATE) { | |
4067 | /* All single variable list context state assignments, hence | |
4068 | state ($a) = ... | |
4069 | (state $a) = ... | |
4070 | state @a = ... | |
4071 | state (@a) = ... | |
4072 | (state @a) = ... | |
4073 | state %a = ... | |
4074 | state (%a) = ... | |
4075 | (state %a) = ... | |
4076 | */ | |
4077 | yyerror(no_list_state); | |
4078 | } | |
4079 | } | |
4080 | ||
dd2155a4 DM |
4081 | /* PL_generation sorcery: |
4082 | * an assignment like ($a,$b) = ($c,$d) is easier than | |
4083 | * ($a,$b) = ($c,$a), since there is no need for temporary vars. | |
4084 | * To detect whether there are common vars, the global var | |
4085 | * PL_generation is incremented for each assign op we compile. | |
4086 | * Then, while compiling the assign op, we run through all the | |
4087 | * variables on both sides of the assignment, setting a spare slot | |
4088 | * in each of them to PL_generation. If any of them already have | |
4089 | * that value, we know we've got commonality. We could use a | |
4090 | * single bit marker, but then we'd have to make 2 passes, first | |
4091 | * to clear the flag, then to test and set it. To find somewhere | |
931b58fb | 4092 | * to store these values, evil chicanery is done with SvUVX(). |
dd2155a4 DM |
4093 | */ |
4094 | ||
fafafbaf | 4095 | if (maybe_common_vars) { |
11343788 | 4096 | OP *lastop = o; |
3280af22 | 4097 | PL_generation++; |
11343788 | 4098 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
22c35a8c | 4099 | if (PL_opargs[curop->op_type] & OA_DANGEROUS) { |
79072805 | 4100 | if (curop->op_type == OP_GV) { |
638eceb6 | 4101 | GV *gv = cGVOPx_gv(curop); |
169d2d72 NC |
4102 | if (gv == PL_defgv |
4103 | || (int)GvASSIGN_GENERATION(gv) == PL_generation) | |
79072805 | 4104 | break; |
169d2d72 | 4105 | GvASSIGN_GENERATION_set(gv, PL_generation); |
79072805 | 4106 | } |
748a9306 LW |
4107 | else if (curop->op_type == OP_PADSV || |
4108 | curop->op_type == OP_PADAV || | |
4109 | curop->op_type == OP_PADHV || | |
dd2155a4 DM |
4110 | curop->op_type == OP_PADANY) |
4111 | { | |
4112 | if (PAD_COMPNAME_GEN(curop->op_targ) | |
92251a1e | 4113 | == (STRLEN)PL_generation) |
748a9306 | 4114 | break; |
b162af07 | 4115 | PAD_COMPNAME_GEN_set(curop->op_targ, PL_generation); |
dd2155a4 | 4116 | |
748a9306 | 4117 | } |
79072805 LW |
4118 | else if (curop->op_type == OP_RV2CV) |
4119 | break; | |
4120 | else if (curop->op_type == OP_RV2SV || | |
4121 | curop->op_type == OP_RV2AV || | |
4122 | curop->op_type == OP_RV2HV || | |
4123 | curop->op_type == OP_RV2GV) { | |
4124 | if (lastop->op_type != OP_GV) /* funny deref? */ | |
4125 | break; | |
4126 | } | |
1167e5da | 4127 | else if (curop->op_type == OP_PUSHRE) { |
b3f5893f | 4128 | #ifdef USE_ITHREADS |
20e98b0f NC |
4129 | if (((PMOP*)curop)->op_pmreplrootu.op_pmtargetoff) { |
4130 | GV *const gv = (GV*)PAD_SVl(((PMOP*)curop)->op_pmreplrootu.op_pmtargetoff); | |
169d2d72 NC |
4131 | if (gv == PL_defgv |
4132 | || (int)GvASSIGN_GENERATION(gv) == PL_generation) | |
1167e5da | 4133 | break; |
169d2d72 | 4134 | GvASSIGN_GENERATION_set(gv, PL_generation); |
20e98b0f NC |
4135 | } |
4136 | #else | |
4137 | GV *const gv | |
4138 | = ((PMOP*)curop)->op_pmreplrootu.op_pmtargetgv; | |
4139 | if (gv) { | |
4140 | if (gv == PL_defgv | |
4141 | || (int)GvASSIGN_GENERATION(gv) == PL_generation) | |
4142 | break; | |
169d2d72 | 4143 | GvASSIGN_GENERATION_set(gv, PL_generation); |
b2ffa427 | 4144 | } |
20e98b0f | 4145 | #endif |
1167e5da | 4146 | } |
79072805 LW |
4147 | else |
4148 | break; | |
4149 | } | |
4150 | lastop = curop; | |
4151 | } | |
11343788 | 4152 | if (curop != o) |
10c8fecd | 4153 | o->op_private |= OPpASSIGN_COMMON; |
461824dc | 4154 | } |
9fdc7570 | 4155 | |
e9cc17ba | 4156 | if (right && right->op_type == OP_SPLIT && !PL_madskills) { |
1496a290 AL |
4157 | OP* tmpop = ((LISTOP*)right)->op_first; |
4158 | if (tmpop && (tmpop->op_type == OP_PUSHRE)) { | |
551405c4 | 4159 | PMOP * const pm = (PMOP*)tmpop; |
c07a80fd | 4160 | if (left->op_type == OP_RV2AV && |
4161 | !(left->op_private & OPpLVAL_INTRO) && | |
11343788 | 4162 | !(o->op_private & OPpASSIGN_COMMON) ) |
c07a80fd | 4163 | { |
4164 | tmpop = ((UNOP*)left)->op_first; | |
20e98b0f NC |
4165 | if (tmpop->op_type == OP_GV |
4166 | #ifdef USE_ITHREADS | |
4167 | && !pm->op_pmreplrootu.op_pmtargetoff | |
4168 | #else | |
4169 | && !pm->op_pmreplrootu.op_pmtargetgv | |
4170 | #endif | |
4171 | ) { | |
971a9dd3 | 4172 | #ifdef USE_ITHREADS |
20e98b0f NC |
4173 | pm->op_pmreplrootu.op_pmtargetoff |
4174 | = cPADOPx(tmpop)->op_padix; | |
971a9dd3 GS |
4175 | cPADOPx(tmpop)->op_padix = 0; /* steal it */ |
4176 | #else | |
20e98b0f NC |
4177 | pm->op_pmreplrootu.op_pmtargetgv |
4178 | = (GV*)cSVOPx(tmpop)->op_sv; | |
a0714e2c | 4179 | cSVOPx(tmpop)->op_sv = NULL; /* steal it */ |
971a9dd3 | 4180 | #endif |
c07a80fd | 4181 | pm->op_pmflags |= PMf_ONCE; |
11343788 | 4182 | tmpop = cUNOPo->op_first; /* to list (nulled) */ |
c07a80fd | 4183 | tmpop = ((UNOP*)tmpop)->op_first; /* to pushmark */ |
5f66b61c | 4184 | tmpop->op_sibling = NULL; /* don't free split */ |
c07a80fd | 4185 | right->op_next = tmpop->op_next; /* fix starting loc */ |
11343788 | 4186 | op_free(o); /* blow off assign */ |
54310121 | 4187 | right->op_flags &= ~OPf_WANT; |
a5f75d66 | 4188 | /* "I don't know and I don't care." */ |
c07a80fd | 4189 | return right; |
4190 | } | |
4191 | } | |
4192 | else { | |
e6438c1a | 4193 | if (PL_modcount < RETURN_UNLIMITED_NUMBER && |
c07a80fd | 4194 | ((LISTOP*)right)->op_last->op_type == OP_CONST) |
4195 | { | |
4196 | SV *sv = ((SVOP*)((LISTOP*)right)->op_last)->op_sv; | |
4197 | if (SvIVX(sv) == 0) | |
3280af22 | 4198 | sv_setiv(sv, PL_modcount+1); |
c07a80fd | 4199 | } |
4200 | } | |
4201 | } | |
4202 | } | |
11343788 | 4203 | return o; |
79072805 LW |
4204 | } |
4205 | if (!right) | |
4206 | right = newOP(OP_UNDEF, 0); | |
4207 | if (right->op_type == OP_READLINE) { | |
4208 | right->op_flags |= OPf_STACKED; | |
463ee0b2 | 4209 | return newBINOP(OP_NULL, flags, mod(scalar(left), OP_SASSIGN), scalar(right)); |
79072805 | 4210 | } |
a0d0e21e | 4211 | else { |
3280af22 | 4212 | PL_eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ |
11343788 | 4213 | o = newBINOP(OP_SASSIGN, flags, |
463ee0b2 | 4214 | scalar(right), mod(scalar(left), OP_SASSIGN) ); |
3280af22 NIS |
4215 | if (PL_eval_start) |
4216 | PL_eval_start = 0; | |
748a9306 | 4217 | else { |
eb8433b7 | 4218 | /* FIXME for MAD */ |
3b6547f5 | 4219 | op_free(o); |
fc15ae8f | 4220 | o = newSVOP(OP_CONST, 0, newSViv(CopARYBASE_get(&PL_compiling))); |
2e0ae2d3 | 4221 | o->op_private |= OPpCONST_ARYBASE; |
a0d0e21e LW |
4222 | } |
4223 | } | |
11343788 | 4224 | return o; |
79072805 LW |
4225 | } |
4226 | ||
4227 | OP * | |
864dbfa3 | 4228 | Perl_newSTATEOP(pTHX_ I32 flags, char *label, OP *o) |
79072805 | 4229 | { |
27da23d5 | 4230 | dVAR; |
e1ec3a88 | 4231 | const U32 seq = intro_my(); |
79072805 LW |
4232 | register COP *cop; |
4233 | ||
b7dc083c | 4234 | NewOp(1101, cop, 1, COP); |
57843af0 | 4235 | if (PERLDB_LINE && CopLINE(PL_curcop) && PL_curstash != PL_debstash) { |
8990e307 | 4236 | cop->op_type = OP_DBSTATE; |
22c35a8c | 4237 | cop->op_ppaddr = PL_ppaddr[ OP_DBSTATE ]; |
8990e307 LW |
4238 | } |
4239 | else { | |
4240 | cop->op_type = OP_NEXTSTATE; | |
22c35a8c | 4241 | cop->op_ppaddr = PL_ppaddr[ OP_NEXTSTATE ]; |
8990e307 | 4242 | } |
eb160463 | 4243 | cop->op_flags = (U8)flags; |
623e6609 | 4244 | CopHINTS_set(cop, PL_hints); |
ff0cee69 | 4245 | #ifdef NATIVE_HINTS |
4246 | cop->op_private |= NATIVE_HINTS; | |
4247 | #endif | |
623e6609 | 4248 | CopHINTS_set(&PL_compiling, CopHINTS_get(cop)); |
79072805 LW |
4249 | cop->op_next = (OP*)cop; |
4250 | ||
463ee0b2 | 4251 | if (label) { |
6a3d5e3d | 4252 | CopLABEL_set(cop, label); |
3280af22 | 4253 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 4254 | } |
bbce6d69 | 4255 | cop->cop_seq = seq; |
7b0bddfa | 4256 | /* CopARYBASE is now "virtual", in that it's stored as a flag bit in |
c28fe1ec NC |
4257 | CopHINTS and a possible value in cop_hints_hash, so no need to copy it. |
4258 | */ | |
72dc9ed5 | 4259 | cop->cop_warnings = DUP_WARNINGS(PL_curcop->cop_warnings); |
c28fe1ec NC |
4260 | cop->cop_hints_hash = PL_curcop->cop_hints_hash; |
4261 | if (cop->cop_hints_hash) { | |
cbb1fbea | 4262 | HINTS_REFCNT_LOCK; |
c28fe1ec | 4263 | cop->cop_hints_hash->refcounted_he_refcnt++; |
cbb1fbea | 4264 | HINTS_REFCNT_UNLOCK; |
b3ca2e83 | 4265 | } |
79072805 | 4266 | |
53a7735b | 4267 | if (PL_parser && PL_parser->copline == NOLINE) |
57843af0 | 4268 | CopLINE_set(cop, CopLINE(PL_curcop)); |
79072805 | 4269 | else { |
53a7735b DM |
4270 | CopLINE_set(cop, PL_parser->copline); |
4271 | if (PL_parser) | |
4272 | PL_parser->copline = NOLINE; | |
79072805 | 4273 | } |
57843af0 | 4274 | #ifdef USE_ITHREADS |
f4dd75d9 | 4275 | CopFILE_set(cop, CopFILE(PL_curcop)); /* XXX share in a pvtable? */ |
57843af0 | 4276 | #else |
f4dd75d9 | 4277 | CopFILEGV_set(cop, CopFILEGV(PL_curcop)); |
57843af0 | 4278 | #endif |
11faa288 | 4279 | CopSTASH_set(cop, PL_curstash); |
79072805 | 4280 | |
3280af22 | 4281 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
80a702cd RGS |
4282 | AV *av = CopFILEAVx(PL_curcop); |
4283 | if (av) { | |
4284 | SV * const * const svp = av_fetch(av, (I32)CopLINE(cop), FALSE); | |
4285 | if (svp && *svp != &PL_sv_undef ) { | |
4286 | (void)SvIOK_on(*svp); | |
4287 | SvIV_set(*svp, PTR2IV(cop)); | |
4288 | } | |
1eb1540c | 4289 | } |
93a17b20 LW |
4290 | } |
4291 | ||
722969e2 | 4292 | return prepend_elem(OP_LINESEQ, (OP*)cop, o); |
79072805 LW |
4293 | } |
4294 | ||
bbce6d69 | 4295 | |
79072805 | 4296 | OP * |
864dbfa3 | 4297 | Perl_newLOGOP(pTHX_ I32 type, I32 flags, OP *first, OP *other) |
79072805 | 4298 | { |
27da23d5 | 4299 | dVAR; |
883ffac3 CS |
4300 | return new_logop(type, flags, &first, &other); |
4301 | } | |
4302 | ||
3bd495df | 4303 | STATIC OP * |
cea2e8a9 | 4304 | S_new_logop(pTHX_ I32 type, I32 flags, OP** firstp, OP** otherp) |
883ffac3 | 4305 | { |
27da23d5 | 4306 | dVAR; |
79072805 | 4307 | LOGOP *logop; |
11343788 | 4308 | OP *o; |
883ffac3 | 4309 | OP *first = *firstp; |
b22e6366 | 4310 | OP * const other = *otherp; |
79072805 | 4311 | |
a0d0e21e LW |
4312 | if (type == OP_XOR) /* Not short circuit, but here by precedence. */ |
4313 | return newBINOP(type, flags, scalar(first), scalar(other)); | |
4314 | ||
8990e307 | 4315 | scalarboolean(first); |
79072805 | 4316 | /* optimize "!a && b" to "a || b", and "!a || b" to "a && b" */ |
68726e16 NC |
4317 | if (first->op_type == OP_NOT |
4318 | && (first->op_flags & OPf_SPECIAL) | |
b6214b80 GG |
4319 | && (first->op_flags & OPf_KIDS) |
4320 | && !PL_madskills) { | |
79072805 LW |
4321 | if (type == OP_AND || type == OP_OR) { |
4322 | if (type == OP_AND) | |
4323 | type = OP_OR; | |
4324 | else | |
4325 | type = OP_AND; | |
11343788 | 4326 | o = first; |
883ffac3 | 4327 | first = *firstp = cUNOPo->op_first; |
11343788 MB |
4328 | if (o->op_next) |
4329 | first->op_next = o->op_next; | |
5f66b61c | 4330 | cUNOPo->op_first = NULL; |
11343788 | 4331 | op_free(o); |
79072805 LW |
4332 | } |
4333 | } | |
4334 | if (first->op_type == OP_CONST) { | |
39a440a3 DM |
4335 | if (first->op_private & OPpCONST_STRICT) |
4336 | no_bareword_allowed(first); | |
041457d9 | 4337 | else if ((first->op_private & OPpCONST_BARE) && ckWARN(WARN_BAREWORD)) |
989dfb19 | 4338 | Perl_warner(aTHX_ packWARN(WARN_BAREWORD), "Bareword found in conditional"); |
75cc09e4 MHM |
4339 | if ((type == OP_AND && SvTRUE(((SVOP*)first)->op_sv)) || |
4340 | (type == OP_OR && !SvTRUE(((SVOP*)first)->op_sv)) || | |
4341 | (type == OP_DOR && !SvOK(((SVOP*)first)->op_sv))) { | |
5f66b61c | 4342 | *firstp = NULL; |
d6fee5c7 DM |
4343 | if (other->op_type == OP_CONST) |
4344 | other->op_private |= OPpCONST_SHORTCIRCUIT; | |
eb8433b7 NC |
4345 | if (PL_madskills) { |
4346 | OP *newop = newUNOP(OP_NULL, 0, other); | |
4347 | op_getmad(first, newop, '1'); | |
4348 | newop->op_targ = type; /* set "was" field */ | |
4349 | return newop; | |
4350 | } | |
4351 | op_free(first); | |
79072805 LW |
4352 | return other; |
4353 | } | |
4354 | else { | |
7921d0f2 | 4355 | /* check for C<my $x if 0>, or C<my($x,$y) if 0> */ |
6867be6d | 4356 | const OP *o2 = other; |
7921d0f2 DM |
4357 | if ( ! (o2->op_type == OP_LIST |
4358 | && (( o2 = cUNOPx(o2)->op_first)) | |
4359 | && o2->op_type == OP_PUSHMARK | |
4360 | && (( o2 = o2->op_sibling)) ) | |
4361 | ) | |
4362 | o2 = other; | |
4363 | if ((o2->op_type == OP_PADSV || o2->op_type == OP_PADAV | |
4364 | || o2->op_type == OP_PADHV) | |
4365 | && o2->op_private & OPpLVAL_INTRO | |
52351015 | 4366 | && !(o2->op_private & OPpPAD_STATE) |
7921d0f2 DM |
4367 | && ckWARN(WARN_DEPRECATED)) |
4368 | { | |
4369 | Perl_warner(aTHX_ packWARN(WARN_DEPRECATED), | |
4370 | "Deprecated use of my() in false conditional"); | |
4371 | } | |
4372 | ||
5f66b61c | 4373 | *otherp = NULL; |
d6fee5c7 DM |
4374 | if (first->op_type == OP_CONST) |
4375 | first->op_private |= OPpCONST_SHORTCIRCUIT; | |
eb8433b7 NC |
4376 | if (PL_madskills) { |
4377 | first = newUNOP(OP_NULL, 0, first); | |
4378 | op_getmad(other, first, '2'); | |
4379 | first->op_targ = type; /* set "was" field */ | |
4380 | } | |
4381 | else | |
4382 | op_free(other); | |
79072805 LW |
4383 | return first; |
4384 | } | |
4385 | } | |
041457d9 DM |
4386 | else if ((first->op_flags & OPf_KIDS) && type != OP_DOR |
4387 | && ckWARN(WARN_MISC)) /* [#24076] Don't warn for <FH> err FOO. */ | |
59e10468 | 4388 | { |
b22e6366 AL |
4389 | const OP * const k1 = ((UNOP*)first)->op_first; |
4390 | const OP * const k2 = k1->op_sibling; | |
a6006777 | 4391 | OPCODE warnop = 0; |
4392 | switch (first->op_type) | |
4393 | { | |
4394 | case OP_NULL: | |
4395 | if (k2 && k2->op_type == OP_READLINE | |
4396 | && (k2->op_flags & OPf_STACKED) | |
1c846c1f | 4397 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
72b16652 | 4398 | { |
a6006777 | 4399 | warnop = k2->op_type; |
72b16652 | 4400 | } |
a6006777 | 4401 | break; |
4402 | ||
4403 | case OP_SASSIGN: | |
68dc0745 | 4404 | if (k1->op_type == OP_READDIR |
4405 | || k1->op_type == OP_GLOB | |
72b16652 | 4406 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) |
68dc0745 | 4407 | || k1->op_type == OP_EACH) |
72b16652 GS |
4408 | { |
4409 | warnop = ((k1->op_type == OP_NULL) | |
eb160463 | 4410 | ? (OPCODE)k1->op_targ : k1->op_type); |
72b16652 | 4411 | } |
a6006777 | 4412 | break; |
4413 | } | |
8ebc5c01 | 4414 | if (warnop) { |
6867be6d | 4415 | const line_t oldline = CopLINE(PL_curcop); |
53a7735b | 4416 | CopLINE_set(PL_curcop, PL_parser->copline); |
9014280d | 4417 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
599cee73 | 4418 | "Value of %s%s can be \"0\"; test with defined()", |
22c35a8c | 4419 | PL_op_desc[warnop], |
68dc0745 | 4420 | ((warnop == OP_READLINE || warnop == OP_GLOB) |
4421 | ? " construct" : "() operator")); | |
57843af0 | 4422 | CopLINE_set(PL_curcop, oldline); |
8ebc5c01 | 4423 | } |
a6006777 | 4424 | } |
79072805 LW |
4425 | |
4426 | if (!other) | |
4427 | return first; | |
4428 | ||
c963b151 | 4429 | if (type == OP_ANDASSIGN || type == OP_ORASSIGN || type == OP_DORASSIGN) |
a0d0e21e LW |
4430 | other->op_private |= OPpASSIGN_BACKWARDS; /* other is an OP_SASSIGN */ |
4431 | ||
b7dc083c | 4432 | NewOp(1101, logop, 1, LOGOP); |
79072805 | 4433 | |
eb160463 | 4434 | logop->op_type = (OPCODE)type; |
22c35a8c | 4435 | logop->op_ppaddr = PL_ppaddr[type]; |
79072805 | 4436 | logop->op_first = first; |
585ec06d | 4437 | logop->op_flags = (U8)(flags | OPf_KIDS); |
79072805 | 4438 | logop->op_other = LINKLIST(other); |
eb160463 | 4439 | logop->op_private = (U8)(1 | (flags >> 8)); |
79072805 LW |
4440 | |
4441 | /* establish postfix order */ | |
4442 | logop->op_next = LINKLIST(first); | |
4443 | first->op_next = (OP*)logop; | |
4444 | first->op_sibling = other; | |
4445 | ||
463d09e6 RGS |
4446 | CHECKOP(type,logop); |
4447 | ||
11343788 MB |
4448 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
4449 | other->op_next = o; | |
79072805 | 4450 | |
11343788 | 4451 | return o; |
79072805 LW |
4452 | } |
4453 | ||
4454 | OP * | |
864dbfa3 | 4455 | Perl_newCONDOP(pTHX_ I32 flags, OP *first, OP *trueop, OP *falseop) |
79072805 | 4456 | { |
27da23d5 | 4457 | dVAR; |
1a67a97c SM |
4458 | LOGOP *logop; |
4459 | OP *start; | |
11343788 | 4460 | OP *o; |
79072805 | 4461 | |
b1cb66bf | 4462 | if (!falseop) |
4463 | return newLOGOP(OP_AND, 0, first, trueop); | |
4464 | if (!trueop) | |
4465 | return newLOGOP(OP_OR, 0, first, falseop); | |
79072805 | 4466 | |
8990e307 | 4467 | scalarboolean(first); |
79072805 | 4468 | if (first->op_type == OP_CONST) { |
5b6782b2 NC |
4469 | /* Left or right arm of the conditional? */ |
4470 | const bool left = SvTRUE(((SVOP*)first)->op_sv); | |
4471 | OP *live = left ? trueop : falseop; | |
4472 | OP *const dead = left ? falseop : trueop; | |
2bc6235c | 4473 | if (first->op_private & OPpCONST_BARE && |
b22e6366 AL |
4474 | first->op_private & OPpCONST_STRICT) { |
4475 | no_bareword_allowed(first); | |
4476 | } | |
5b6782b2 NC |
4477 | if (PL_madskills) { |
4478 | /* This is all dead code when PERL_MAD is not defined. */ | |
4479 | live = newUNOP(OP_NULL, 0, live); | |
4480 | op_getmad(first, live, 'C'); | |
4481 | op_getmad(dead, live, left ? 'e' : 't'); | |
4482 | } else { | |
4483 | op_free(first); | |
4484 | op_free(dead); | |
79072805 | 4485 | } |
5b6782b2 | 4486 | return live; |
79072805 | 4487 | } |
1a67a97c SM |
4488 | NewOp(1101, logop, 1, LOGOP); |
4489 | logop->op_type = OP_COND_EXPR; | |
4490 | logop->op_ppaddr = PL_ppaddr[OP_COND_EXPR]; | |
4491 | logop->op_first = first; | |
585ec06d | 4492 | logop->op_flags = (U8)(flags | OPf_KIDS); |
eb160463 | 4493 | logop->op_private = (U8)(1 | (flags >> 8)); |
1a67a97c SM |
4494 | logop->op_other = LINKLIST(trueop); |
4495 | logop->op_next = LINKLIST(falseop); | |
79072805 | 4496 | |
463d09e6 RGS |
4497 | CHECKOP(OP_COND_EXPR, /* that's logop->op_type */ |
4498 | logop); | |
79072805 LW |
4499 | |
4500 | /* establish postfix order */ | |
1a67a97c SM |
4501 | start = LINKLIST(first); |
4502 | first->op_next = (OP*)logop; | |
79072805 | 4503 | |
b1cb66bf | 4504 | first->op_sibling = trueop; |
4505 | trueop->op_sibling = falseop; | |
1a67a97c | 4506 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
79072805 | 4507 | |
1a67a97c | 4508 | trueop->op_next = falseop->op_next = o; |
79072805 | 4509 | |
1a67a97c | 4510 | o->op_next = start; |
11343788 | 4511 | return o; |
79072805 LW |
4512 | } |
4513 | ||
4514 | OP * | |
864dbfa3 | 4515 | Perl_newRANGE(pTHX_ I32 flags, OP *left, OP *right) |
79072805 | 4516 | { |
27da23d5 | 4517 | dVAR; |
1a67a97c | 4518 | LOGOP *range; |
79072805 LW |
4519 | OP *flip; |
4520 | OP *flop; | |
1a67a97c | 4521 | OP *leftstart; |
11343788 | 4522 | OP *o; |
79072805 | 4523 | |
1a67a97c | 4524 | NewOp(1101, range, 1, LOGOP); |
79072805 | 4525 | |
1a67a97c SM |
4526 | range->op_type = OP_RANGE; |
4527 | range->op_ppaddr = PL_ppaddr[OP_RANGE]; | |
4528 | range->op_first = left; | |
4529 | range->op_flags = OPf_KIDS; | |
4530 | leftstart = LINKLIST(left); | |
4531 | range->op_other = LINKLIST(right); | |
eb160463 | 4532 | range->op_private = (U8)(1 | (flags >> 8)); |
79072805 LW |
4533 | |
4534 | left->op_sibling = right; | |
4535 | ||
1a67a97c SM |
4536 | range->op_next = (OP*)range; |
4537 | flip = newUNOP(OP_FLIP, flags, (OP*)range); | |
79072805 | 4538 | flop = newUNOP(OP_FLOP, 0, flip); |
11343788 | 4539 | o = newUNOP(OP_NULL, 0, flop); |
79072805 | 4540 | linklist(flop); |
1a67a97c | 4541 | range->op_next = leftstart; |
79072805 LW |
4542 | |
4543 | left->op_next = flip; | |
4544 | right->op_next = flop; | |
4545 | ||
1a67a97c SM |
4546 | range->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
4547 | sv_upgrade(PAD_SV(range->op_targ), SVt_PVNV); | |
ed6116ce | 4548 | flip->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 LW |
4549 | sv_upgrade(PAD_SV(flip->op_targ), SVt_PVNV); |
4550 | ||
4551 | flip->op_private = left->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
4552 | flop->op_private = right->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
4553 | ||
11343788 | 4554 | flip->op_next = o; |
79072805 | 4555 | if (!flip->op_private || !flop->op_private) |
11343788 | 4556 | linklist(o); /* blow off optimizer unless constant */ |
79072805 | 4557 | |
11343788 | 4558 | return o; |
79072805 LW |
4559 | } |
4560 | ||
4561 | OP * | |
864dbfa3 | 4562 | Perl_newLOOPOP(pTHX_ I32 flags, I32 debuggable, OP *expr, OP *block) |
79072805 | 4563 | { |
97aff369 | 4564 | dVAR; |
463ee0b2 | 4565 | OP* listop; |
11343788 | 4566 | OP* o; |
73d840c0 | 4567 | const bool once = block && block->op_flags & OPf_SPECIAL && |
a0d0e21e | 4568 | (block->op_type == OP_ENTERSUB || block->op_type == OP_NULL); |
46c461b5 AL |
4569 | |
4570 | PERL_UNUSED_ARG(debuggable); | |
93a17b20 | 4571 | |
463ee0b2 LW |
4572 | if (expr) { |
4573 | if (once && expr->op_type == OP_CONST && !SvTRUE(((SVOP*)expr)->op_sv)) | |
4574 | return block; /* do {} while 0 does once */ | |
fb73857a | 4575 | if (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB |
4576 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB)) { | |
774d564b | 4577 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 4578 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 | 4579 | } else if (expr->op_flags & OPf_KIDS) { |
46c461b5 AL |
4580 | const OP * const k1 = ((UNOP*)expr)->op_first; |
4581 | const OP * const k2 = k1 ? k1->op_sibling : NULL; | |
55d729e4 | 4582 | switch (expr->op_type) { |
1c846c1f | 4583 | case OP_NULL: |
55d729e4 GS |
4584 | if (k2 && k2->op_type == OP_READLINE |
4585 | && (k2->op_flags & OPf_STACKED) | |
1c846c1f | 4586 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
55d729e4 | 4587 | expr = newUNOP(OP_DEFINED, 0, expr); |
1c846c1f | 4588 | break; |
55d729e4 GS |
4589 | |
4590 | case OP_SASSIGN: | |
06dc7ac6 | 4591 | if (k1 && (k1->op_type == OP_READDIR |
55d729e4 | 4592 | || k1->op_type == OP_GLOB |
6531c3e6 | 4593 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) |
06dc7ac6 | 4594 | || k1->op_type == OP_EACH)) |
55d729e4 GS |
4595 | expr = newUNOP(OP_DEFINED, 0, expr); |
4596 | break; | |
4597 | } | |
774d564b | 4598 | } |
463ee0b2 | 4599 | } |
93a17b20 | 4600 | |
e1548254 RGS |
4601 | /* if block is null, the next append_elem() would put UNSTACK, a scalar |
4602 | * op, in listop. This is wrong. [perl #27024] */ | |
4603 | if (!block) | |
4604 | block = newOP(OP_NULL, 0); | |
8990e307 | 4605 | listop = append_elem(OP_LINESEQ, block, newOP(OP_UNSTACK, 0)); |
883ffac3 | 4606 | o = new_logop(OP_AND, 0, &expr, &listop); |
463ee0b2 | 4607 | |
883ffac3 CS |
4608 | if (listop) |
4609 | ((LISTOP*)listop)->op_last->op_next = LINKLIST(o); | |
79072805 | 4610 | |
11343788 MB |
4611 | if (once && o != listop) |
4612 | o->op_next = ((LOGOP*)cUNOPo->op_first)->op_other; | |
79072805 | 4613 | |
11343788 MB |
4614 | if (o == listop) |
4615 | o = newUNOP(OP_NULL, 0, o); /* or do {} while 1 loses outer block */ | |
748a9306 | 4616 | |
11343788 MB |
4617 | o->op_flags |= flags; |
4618 | o = scope(o); | |
4619 | o->op_flags |= OPf_SPECIAL; /* suppress POPBLOCK curpm restoration*/ | |
4620 | return o; | |
79072805 LW |
4621 | } |
4622 | ||
4623 | OP * | |
a034e688 DM |
4624 | Perl_newWHILEOP(pTHX_ I32 flags, I32 debuggable, LOOP *loop, I32 |
4625 | whileline, OP *expr, OP *block, OP *cont, I32 has_my) | |
79072805 | 4626 | { |
27da23d5 | 4627 | dVAR; |
79072805 | 4628 | OP *redo; |
c445ea15 | 4629 | OP *next = NULL; |
79072805 | 4630 | OP *listop; |
11343788 | 4631 | OP *o; |
1ba6ee2b | 4632 | U8 loopflags = 0; |
46c461b5 AL |
4633 | |
4634 | PERL_UNUSED_ARG(debuggable); | |
79072805 | 4635 | |
2d03de9c AL |
4636 | if (expr) { |
4637 | if (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB | |
4638 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB)) { | |
4639 | expr = newUNOP(OP_DEFINED, 0, | |
4640 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); | |
4641 | } else if (expr->op_flags & OPf_KIDS) { | |
4642 | const OP * const k1 = ((UNOP*)expr)->op_first; | |
4643 | const OP * const k2 = (k1) ? k1->op_sibling : NULL; | |
4644 | switch (expr->op_type) { | |
4645 | case OP_NULL: | |
4646 | if (k2 && k2->op_type == OP_READLINE | |
4647 | && (k2->op_flags & OPf_STACKED) | |
4648 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) | |
4649 | expr = newUNOP(OP_DEFINED, 0, expr); | |
4650 | break; | |
55d729e4 | 4651 | |
2d03de9c | 4652 | case OP_SASSIGN: |
72c8de1a | 4653 | if (k1 && (k1->op_type == OP_READDIR |
2d03de9c AL |
4654 | || k1->op_type == OP_GLOB |
4655 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) | |
72c8de1a | 4656 | || k1->op_type == OP_EACH)) |
2d03de9c AL |
4657 | expr = newUNOP(OP_DEFINED, 0, expr); |
4658 | break; | |
4659 | } | |
55d729e4 | 4660 | } |
748a9306 | 4661 | } |
79072805 LW |
4662 | |
4663 | if (!block) | |
4664 | block = newOP(OP_NULL, 0); | |
a034e688 | 4665 | else if (cont || has_my) { |
87246558 GS |
4666 | block = scope(block); |
4667 | } | |
79072805 | 4668 | |
1ba6ee2b | 4669 | if (cont) { |
79072805 | 4670 | next = LINKLIST(cont); |
1ba6ee2b | 4671 | } |
fb73857a | 4672 | if (expr) { |
551405c4 | 4673 | OP * const unstack = newOP(OP_UNSTACK, 0); |
85538317 GS |
4674 | if (!next) |
4675 | next = unstack; | |
4676 | cont = append_elem(OP_LINESEQ, cont, unstack); | |
fb73857a | 4677 | } |
79072805 | 4678 | |
ce3e5c45 | 4679 | assert(block); |
463ee0b2 | 4680 | listop = append_list(OP_LINESEQ, (LISTOP*)block, (LISTOP*)cont); |
ce3e5c45 | 4681 | assert(listop); |
79072805 LW |
4682 | redo = LINKLIST(listop); |
4683 | ||
4684 | if (expr) { | |
53a7735b | 4685 | PL_parser->copline = (line_t)whileline; |
883ffac3 CS |
4686 | scalar(listop); |
4687 | o = new_logop(OP_AND, 0, &expr, &listop); | |
11343788 | 4688 | if (o == expr && o->op_type == OP_CONST && !SvTRUE(cSVOPo->op_sv)) { |
85e6fe83 | 4689 | op_free(expr); /* oops, it's a while (0) */ |
463ee0b2 | 4690 | op_free((OP*)loop); |
5f66b61c | 4691 | return NULL; /* listop already freed by new_logop */ |
463ee0b2 | 4692 | } |
883ffac3 | 4693 | if (listop) |
497b47a8 | 4694 | ((LISTOP*)listop)->op_last->op_next = |
883ffac3 | 4695 | (o == listop ? redo : LINKLIST(o)); |
79072805 LW |
4696 | } |
4697 | else | |
11343788 | 4698 | o = listop; |
79072805 LW |
4699 | |
4700 | if (!loop) { | |
b7dc083c | 4701 | NewOp(1101,loop,1,LOOP); |
79072805 | 4702 | loop->op_type = OP_ENTERLOOP; |
22c35a8c | 4703 | loop->op_ppaddr = PL_ppaddr[OP_ENTERLOOP]; |
79072805 LW |
4704 | loop->op_private = 0; |
4705 | loop->op_next = (OP*)loop; | |
4706 | } | |
4707 | ||
11343788 | 4708 | o = newBINOP(OP_LEAVELOOP, 0, (OP*)loop, o); |
79072805 LW |
4709 | |
4710 | loop->op_redoop = redo; | |
11343788 | 4711 | loop->op_lastop = o; |
1ba6ee2b | 4712 | o->op_private |= loopflags; |
79072805 LW |
4713 | |
4714 | if (next) | |
4715 | loop->op_nextop = next; | |
4716 | else | |
11343788 | 4717 | loop->op_nextop = o; |
79072805 | 4718 | |
11343788 MB |
4719 | o->op_flags |= flags; |
4720 | o->op_private |= (flags >> 8); | |
4721 | return o; | |
79072805 LW |
4722 | } |
4723 | ||
4724 | OP * | |
66a1b24b | 4725 | Perl_newFOROP(pTHX_ I32 flags, char *label, line_t forline, OP *sv, OP *expr, OP *block, OP *cont) |
79072805 | 4726 | { |
27da23d5 | 4727 | dVAR; |
79072805 | 4728 | LOOP *loop; |
fb73857a | 4729 | OP *wop; |
4bbc6d12 | 4730 | PADOFFSET padoff = 0; |
4633a7c4 | 4731 | I32 iterflags = 0; |
241416b8 | 4732 | I32 iterpflags = 0; |
d4c19fe8 | 4733 | OP *madsv = NULL; |
79072805 | 4734 | |
79072805 | 4735 | if (sv) { |
85e6fe83 | 4736 | if (sv->op_type == OP_RV2SV) { /* symbol table variable */ |
241416b8 | 4737 | iterpflags = sv->op_private & OPpOUR_INTRO; /* for our $x () */ |
748a9306 | 4738 | sv->op_type = OP_RV2GV; |
22c35a8c | 4739 | sv->op_ppaddr = PL_ppaddr[OP_RV2GV]; |
0be9a6bb RH |
4740 | |
4741 | /* The op_type check is needed to prevent a possible segfault | |
4742 | * if the loop variable is undeclared and 'strict vars' is in | |
4743 | * effect. This is illegal but is nonetheless parsed, so we | |
4744 | * may reach this point with an OP_CONST where we're expecting | |
4745 | * an OP_GV. | |
4746 | */ | |
4747 | if (cUNOPx(sv)->op_first->op_type == OP_GV | |
4748 | && cGVOPx_gv(cUNOPx(sv)->op_first) == PL_defgv) | |
0d863452 | 4749 | iterpflags |= OPpITER_DEF; |
79072805 | 4750 | } |
85e6fe83 | 4751 | else if (sv->op_type == OP_PADSV) { /* private variable */ |
241416b8 | 4752 | iterpflags = sv->op_private & OPpLVAL_INTRO; /* for my $x () */ |
85e6fe83 | 4753 | padoff = sv->op_targ; |
eb8433b7 NC |
4754 | if (PL_madskills) |
4755 | madsv = sv; | |
4756 | else { | |
4757 | sv->op_targ = 0; | |
4758 | op_free(sv); | |
4759 | } | |
5f66b61c | 4760 | sv = NULL; |
85e6fe83 | 4761 | } |
79072805 | 4762 | else |
cea2e8a9 | 4763 | Perl_croak(aTHX_ "Can't use %s for loop variable", PL_op_desc[sv->op_type]); |
f8503592 NC |
4764 | if (padoff) { |
4765 | SV *const namesv = PAD_COMPNAME_SV(padoff); | |
4766 | STRLEN len; | |
4767 | const char *const name = SvPV_const(namesv, len); | |
4768 | ||
4769 | if (len == 2 && name[0] == '$' && name[1] == '_') | |
4770 | iterpflags |= OPpITER_DEF; | |
4771 | } | |
79072805 LW |
4772 | } |
4773 | else { | |
9f7d9405 | 4774 | const PADOFFSET offset = pad_findmy("$_"); |
00b1698f | 4775 | if (offset == NOT_IN_PAD || PAD_COMPNAME_FLAGS_isOUR(offset)) { |
aabe9514 RGS |
4776 | sv = newGVOP(OP_GV, 0, PL_defgv); |
4777 | } | |
4778 | else { | |
4779 | padoff = offset; | |
aabe9514 | 4780 | } |
0d863452 | 4781 | iterpflags |= OPpITER_DEF; |
79072805 | 4782 | } |
5f05dabc | 4783 | if (expr->op_type == OP_RV2AV || expr->op_type == OP_PADAV) { |
89ea2908 | 4784 | expr = mod(force_list(scalar(ref(expr, OP_ITER))), OP_GREPSTART); |
4633a7c4 LW |
4785 | iterflags |= OPf_STACKED; |
4786 | } | |
89ea2908 GA |
4787 | else if (expr->op_type == OP_NULL && |
4788 | (expr->op_flags & OPf_KIDS) && | |
4789 | ((BINOP*)expr)->op_first->op_type == OP_FLOP) | |
4790 | { | |
4791 | /* Basically turn for($x..$y) into the same as for($x,$y), but we | |
4792 | * set the STACKED flag to indicate that these values are to be | |
4793 | * treated as min/max values by 'pp_iterinit'. | |
4794 | */ | |
d4c19fe8 | 4795 | const UNOP* const flip = (UNOP*)((UNOP*)((BINOP*)expr)->op_first)->op_first; |
551405c4 | 4796 | LOGOP* const range = (LOGOP*) flip->op_first; |
66a1b24b AL |
4797 | OP* const left = range->op_first; |
4798 | OP* const right = left->op_sibling; | |
5152d7c7 | 4799 | LISTOP* listop; |
89ea2908 GA |
4800 | |
4801 | range->op_flags &= ~OPf_KIDS; | |
5f66b61c | 4802 | range->op_first = NULL; |
89ea2908 | 4803 | |
5152d7c7 | 4804 | listop = (LISTOP*)newLISTOP(OP_LIST, 0, left, right); |
1a67a97c SM |
4805 | listop->op_first->op_next = range->op_next; |
4806 | left->op_next = range->op_other; | |
5152d7c7 GS |
4807 | right->op_next = (OP*)listop; |
4808 | listop->op_next = listop->op_first; | |
89ea2908 | 4809 | |
eb8433b7 NC |
4810 | #ifdef PERL_MAD |
4811 | op_getmad(expr,(OP*)listop,'O'); | |
4812 | #else | |
89ea2908 | 4813 | op_free(expr); |
eb8433b7 | 4814 | #endif |
5152d7c7 | 4815 | expr = (OP*)(listop); |
93c66552 | 4816 | op_null(expr); |
89ea2908 GA |
4817 | iterflags |= OPf_STACKED; |
4818 | } | |
4819 | else { | |
4820 | expr = mod(force_list(expr), OP_GREPSTART); | |
4821 | } | |
4822 | ||
4633a7c4 | 4823 | loop = (LOOP*)list(convert(OP_ENTERITER, iterflags, |
89ea2908 | 4824 | append_elem(OP_LIST, expr, scalar(sv)))); |
85e6fe83 | 4825 | assert(!loop->op_next); |
241416b8 | 4826 | /* for my $x () sets OPpLVAL_INTRO; |
14f338dc | 4827 | * for our $x () sets OPpOUR_INTRO */ |
c5661c80 | 4828 | loop->op_private = (U8)iterpflags; |
b7dc083c | 4829 | #ifdef PL_OP_SLAB_ALLOC |
155aba94 GS |
4830 | { |
4831 | LOOP *tmp; | |
4832 | NewOp(1234,tmp,1,LOOP); | |
bd5f3bc4 | 4833 | Copy(loop,tmp,1,LISTOP); |
bfafaa29 | 4834 | S_op_destroy(aTHX_ (OP*)loop); |
155aba94 GS |
4835 | loop = tmp; |
4836 | } | |
b7dc083c | 4837 | #else |
10edeb5d | 4838 | loop = (LOOP*)PerlMemShared_realloc(loop, sizeof(LOOP)); |
1c846c1f | 4839 | #endif |
85e6fe83 | 4840 | loop->op_targ = padoff; |
a034e688 | 4841 | wop = newWHILEOP(flags, 1, loop, forline, newOP(OP_ITER, 0), block, cont, 0); |
eb8433b7 NC |
4842 | if (madsv) |
4843 | op_getmad(madsv, (OP*)loop, 'v'); | |
53a7735b | 4844 | PL_parser->copline = forline; |
fb73857a | 4845 | return newSTATEOP(0, label, wop); |
79072805 LW |
4846 | } |
4847 | ||
8990e307 | 4848 | OP* |
864dbfa3 | 4849 | Perl_newLOOPEX(pTHX_ I32 type, OP *label) |
8990e307 | 4850 | { |
97aff369 | 4851 | dVAR; |
11343788 | 4852 | OP *o; |
2d8e6c8d | 4853 | |
8990e307 | 4854 | if (type != OP_GOTO || label->op_type == OP_CONST) { |
cdaebead MB |
4855 | /* "last()" means "last" */ |
4856 | if (label->op_type == OP_STUB && (label->op_flags & OPf_PARENS)) | |
4857 | o = newOP(type, OPf_SPECIAL); | |
4858 | else { | |
ea71c68d | 4859 | o = newPVOP(type, 0, savesharedpv(label->op_type == OP_CONST |
4ea561bc | 4860 | ? SvPV_nolen_const(((SVOP*)label)->op_sv) |
666ea192 | 4861 | : "")); |
cdaebead | 4862 | } |
eb8433b7 NC |
4863 | #ifdef PERL_MAD |
4864 | op_getmad(label,o,'L'); | |
4865 | #else | |
8990e307 | 4866 | op_free(label); |
eb8433b7 | 4867 | #endif |
8990e307 LW |
4868 | } |
4869 | else { | |
e3aba57a RGS |
4870 | /* Check whether it's going to be a goto &function */ |
4871 | if (label->op_type == OP_ENTERSUB | |
4872 | && !(label->op_flags & OPf_STACKED)) | |
a0d0e21e | 4873 | label = newUNOP(OP_REFGEN, 0, mod(label, OP_REFGEN)); |
11343788 | 4874 | o = newUNOP(type, OPf_STACKED, label); |
8990e307 | 4875 | } |
3280af22 | 4876 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 4877 | return o; |
8990e307 LW |
4878 | } |
4879 | ||
0d863452 RH |
4880 | /* if the condition is a literal array or hash |
4881 | (or @{ ... } etc), make a reference to it. | |
4882 | */ | |
4883 | STATIC OP * | |
4884 | S_ref_array_or_hash(pTHX_ OP *cond) | |
4885 | { | |
4886 | if (cond | |
4887 | && (cond->op_type == OP_RV2AV | |
4888 | || cond->op_type == OP_PADAV | |
4889 | || cond->op_type == OP_RV2HV | |
4890 | || cond->op_type == OP_PADHV)) | |
4891 | ||
4892 | return newUNOP(OP_REFGEN, | |
4893 | 0, mod(cond, OP_REFGEN)); | |
4894 | ||
4895 | else | |
4896 | return cond; | |
4897 | } | |
4898 | ||
4899 | /* These construct the optree fragments representing given() | |
4900 | and when() blocks. | |
4901 | ||
4902 | entergiven and enterwhen are LOGOPs; the op_other pointer | |
4903 | points up to the associated leave op. We need this so we | |
4904 | can put it in the context and make break/continue work. | |
4905 | (Also, of course, pp_enterwhen will jump straight to | |
4906 | op_other if the match fails.) | |
4907 | */ | |
4908 | ||
4136a0f7 | 4909 | STATIC OP * |
0d863452 RH |
4910 | S_newGIVWHENOP(pTHX_ OP *cond, OP *block, |
4911 | I32 enter_opcode, I32 leave_opcode, | |
4912 | PADOFFSET entertarg) | |
4913 | { | |
97aff369 | 4914 | dVAR; |
0d863452 RH |
4915 | LOGOP *enterop; |
4916 | OP *o; | |
4917 | ||
4918 | NewOp(1101, enterop, 1, LOGOP); | |
4919 | enterop->op_type = enter_opcode; | |
4920 | enterop->op_ppaddr = PL_ppaddr[enter_opcode]; | |
4921 | enterop->op_flags = (U8) OPf_KIDS; | |
4922 | enterop->op_targ = ((entertarg == NOT_IN_PAD) ? 0 : entertarg); | |
4923 | enterop->op_private = 0; | |
4924 | ||
4925 | o = newUNOP(leave_opcode, 0, (OP *) enterop); | |
4926 | ||
4927 | if (cond) { | |
4928 | enterop->op_first = scalar(cond); | |
4929 | cond->op_sibling = block; | |
4930 | ||
4931 | o->op_next = LINKLIST(cond); | |
4932 | cond->op_next = (OP *) enterop; | |
4933 | } | |
4934 | else { | |
4935 | /* This is a default {} block */ | |
4936 | enterop->op_first = block; | |
4937 | enterop->op_flags |= OPf_SPECIAL; | |
4938 | ||
4939 | o->op_next = (OP *) enterop; | |
4940 | } | |
4941 | ||
4942 | CHECKOP(enter_opcode, enterop); /* Currently does nothing, since | |
4943 | entergiven and enterwhen both | |
4944 | use ck_null() */ | |
4945 | ||
4946 | enterop->op_next = LINKLIST(block); | |
4947 | block->op_next = enterop->op_other = o; | |
4948 | ||
4949 | return o; | |
4950 | } | |
4951 | ||
4952 | /* Does this look like a boolean operation? For these purposes | |
4953 | a boolean operation is: | |
4954 | - a subroutine call [*] | |
4955 | - a logical connective | |
4956 | - a comparison operator | |
4957 | - a filetest operator, with the exception of -s -M -A -C | |
4958 | - defined(), exists() or eof() | |
4959 | - /$re/ or $foo =~ /$re/ | |
4960 | ||
4961 | [*] possibly surprising | |
4962 | */ | |
4136a0f7 | 4963 | STATIC bool |
ef519e13 | 4964 | S_looks_like_bool(pTHX_ const OP *o) |
0d863452 | 4965 | { |
97aff369 | 4966 | dVAR; |
0d863452 RH |
4967 | switch(o->op_type) { |
4968 | case OP_OR: | |
4969 | return looks_like_bool(cLOGOPo->op_first); | |
4970 | ||
4971 | case OP_AND: | |
4972 | return ( | |
4973 | looks_like_bool(cLOGOPo->op_first) | |
4974 | && looks_like_bool(cLOGOPo->op_first->op_sibling)); | |
4975 | ||
1e1d4b91 JJ |
4976 | case OP_NULL: |
4977 | return ( | |
4978 | o->op_flags & OPf_KIDS | |
4979 | && looks_like_bool(cUNOPo->op_first)); | |
4980 | ||
0d863452 RH |
4981 | case OP_ENTERSUB: |
4982 | ||
4983 | case OP_NOT: case OP_XOR: | |
4984 | /* Note that OP_DOR is not here */ | |
4985 | ||
4986 | case OP_EQ: case OP_NE: case OP_LT: | |
4987 | case OP_GT: case OP_LE: case OP_GE: | |
4988 | ||
4989 | case OP_I_EQ: case OP_I_NE: case OP_I_LT: | |
4990 | case OP_I_GT: case OP_I_LE: case OP_I_GE: | |
4991 | ||
4992 | case OP_SEQ: case OP_SNE: case OP_SLT: | |
4993 | case OP_SGT: case OP_SLE: case OP_SGE: | |
4994 | ||
4995 | case OP_SMARTMATCH: | |
4996 | ||
4997 | case OP_FTRREAD: case OP_FTRWRITE: case OP_FTREXEC: | |
4998 | case OP_FTEREAD: case OP_FTEWRITE: case OP_FTEEXEC: | |
4999 | case OP_FTIS: case OP_FTEOWNED: case OP_FTROWNED: | |
5000 | case OP_FTZERO: case OP_FTSOCK: case OP_FTCHR: | |
5001 | case OP_FTBLK: case OP_FTFILE: case OP_FTDIR: | |
5002 | case OP_FTPIPE: case OP_FTLINK: case OP_FTSUID: | |
5003 | case OP_FTSGID: case OP_FTSVTX: case OP_FTTTY: | |
5004 | case OP_FTTEXT: case OP_FTBINARY: | |
5005 | ||
5006 | case OP_DEFINED: case OP_EXISTS: | |
5007 | case OP_MATCH: case OP_EOF: | |
5008 | ||
5009 | return TRUE; | |
5010 | ||
5011 | case OP_CONST: | |
5012 | /* Detect comparisons that have been optimized away */ | |
5013 | if (cSVOPo->op_sv == &PL_sv_yes | |
5014 | || cSVOPo->op_sv == &PL_sv_no) | |
5015 | ||
5016 | return TRUE; | |
5017 | ||
5018 | /* FALL THROUGH */ | |
5019 | default: | |
5020 | return FALSE; | |
5021 | } | |
5022 | } | |
5023 | ||
5024 | OP * | |
5025 | Perl_newGIVENOP(pTHX_ OP *cond, OP *block, PADOFFSET defsv_off) | |
5026 | { | |
97aff369 | 5027 | dVAR; |
0d863452 RH |
5028 | assert( cond ); |
5029 | return newGIVWHENOP( | |
5030 | ref_array_or_hash(cond), | |
5031 | block, | |
5032 | OP_ENTERGIVEN, OP_LEAVEGIVEN, | |
5033 | defsv_off); | |
5034 | } | |
5035 | ||
5036 | /* If cond is null, this is a default {} block */ | |
5037 | OP * | |
5038 | Perl_newWHENOP(pTHX_ OP *cond, OP *block) | |
5039 | { | |
ef519e13 | 5040 | const bool cond_llb = (!cond || looks_like_bool(cond)); |
0d863452 RH |
5041 | OP *cond_op; |
5042 | ||
5043 | if (cond_llb) | |
5044 | cond_op = cond; | |
5045 | else { | |
5046 | cond_op = newBINOP(OP_SMARTMATCH, OPf_SPECIAL, | |
5047 | newDEFSVOP(), | |
5048 | scalar(ref_array_or_hash(cond))); | |
5049 | } | |
5050 | ||
5051 | return newGIVWHENOP( | |
5052 | cond_op, | |
5053 | append_elem(block->op_type, block, newOP(OP_BREAK, OPf_SPECIAL)), | |
5054 | OP_ENTERWHEN, OP_LEAVEWHEN, 0); | |
5055 | } | |
5056 | ||
7dafbf52 DM |
5057 | /* |
5058 | =for apidoc cv_undef | |
5059 | ||
5060 | Clear out all the active components of a CV. This can happen either | |
5061 | by an explicit C<undef &foo>, or by the reference count going to zero. | |
5062 | In the former case, we keep the CvOUTSIDE pointer, so that any anonymous | |
5063 | children can still follow the full lexical scope chain. | |
5064 | ||
5065 | =cut | |
5066 | */ | |
5067 | ||
79072805 | 5068 | void |
864dbfa3 | 5069 | Perl_cv_undef(pTHX_ CV *cv) |
79072805 | 5070 | { |
27da23d5 | 5071 | dVAR; |
503de470 DM |
5072 | |
5073 | DEBUG_X(PerlIO_printf(Perl_debug_log, | |
5074 | "CV undef: cv=0x%"UVxf" comppad=0x%"UVxf"\n", | |
5075 | PTR2UV(cv), PTR2UV(PL_comppad)) | |
5076 | ); | |
5077 | ||
a636914a | 5078 | #ifdef USE_ITHREADS |
aed2304a | 5079 | if (CvFILE(cv) && !CvISXSUB(cv)) { |
35f1c1c7 | 5080 | /* for XSUBs CvFILE point directly to static memory; __FILE__ */ |
a636914a | 5081 | Safefree(CvFILE(cv)); |
a636914a | 5082 | } |
b3123a61 | 5083 | CvFILE(cv) = NULL; |
a636914a RH |
5084 | #endif |
5085 | ||
aed2304a | 5086 | if (!CvISXSUB(cv) && CvROOT(cv)) { |
bb172083 | 5087 | if (SvTYPE(cv) == SVt_PVCV && CvDEPTH(cv)) |
cea2e8a9 | 5088 | Perl_croak(aTHX_ "Can't undef active subroutine"); |
8990e307 | 5089 | ENTER; |
a0d0e21e | 5090 | |
f3548bdc | 5091 | PAD_SAVE_SETNULLPAD(); |
a0d0e21e | 5092 | |
282f25c9 | 5093 | op_free(CvROOT(cv)); |
5f66b61c AL |
5094 | CvROOT(cv) = NULL; |
5095 | CvSTART(cv) = NULL; | |
8990e307 | 5096 | LEAVE; |
79072805 | 5097 | } |
1d5db326 | 5098 | SvPOK_off((SV*)cv); /* forget prototype */ |
a0714e2c | 5099 | CvGV(cv) = NULL; |
a3985cdc DM |
5100 | |
5101 | pad_undef(cv); | |
5102 | ||
7dafbf52 DM |
5103 | /* remove CvOUTSIDE unless this is an undef rather than a free */ |
5104 | if (!SvREFCNT(cv) && CvOUTSIDE(cv)) { | |
5105 | if (!CvWEAKOUTSIDE(cv)) | |
5106 | SvREFCNT_dec(CvOUTSIDE(cv)); | |
601f1833 | 5107 | CvOUTSIDE(cv) = NULL; |
7dafbf52 | 5108 | } |
beab0874 JT |
5109 | if (CvCONST(cv)) { |
5110 | SvREFCNT_dec((SV*)CvXSUBANY(cv).any_ptr); | |
5111 | CvCONST_off(cv); | |
5112 | } | |
d04ba589 | 5113 | if (CvISXSUB(cv) && CvXSUB(cv)) { |
96a5add6 | 5114 | CvXSUB(cv) = NULL; |
50762d59 | 5115 | } |
7dafbf52 DM |
5116 | /* delete all flags except WEAKOUTSIDE */ |
5117 | CvFLAGS(cv) &= CVf_WEAKOUTSIDE; | |
79072805 LW |
5118 | } |
5119 | ||
3fe9a6f1 | 5120 | void |
cbf82dd0 NC |
5121 | Perl_cv_ckproto_len(pTHX_ const CV *cv, const GV *gv, const char *p, |
5122 | const STRLEN len) | |
5123 | { | |
5124 | /* Can't just use a strcmp on the prototype, as CONSTSUBs "cheat" by | |
5125 | relying on SvCUR, and doubling up the buffer to hold CvFILE(). */ | |
5126 | if (((!p != !SvPOK(cv)) /* One has prototype, one has not. */ | |
5127 | || (p && (len != SvCUR(cv) /* Not the same length. */ | |
5128 | || memNE(p, SvPVX_const(cv), len)))) | |
5129 | && ckWARN_d(WARN_PROTOTYPE)) { | |
2d03de9c | 5130 | SV* const msg = sv_newmortal(); |
a0714e2c | 5131 | SV* name = NULL; |
3fe9a6f1 | 5132 | |
5133 | if (gv) | |
bd61b366 | 5134 | gv_efullname3(name = sv_newmortal(), gv, NULL); |
6502358f | 5135 | sv_setpvs(msg, "Prototype mismatch:"); |
46fc3d4c | 5136 | if (name) |
be2597df | 5137 | Perl_sv_catpvf(aTHX_ msg, " sub %"SVf, SVfARG(name)); |
3fe9a6f1 | 5138 | if (SvPOK(cv)) |
be2597df | 5139 | Perl_sv_catpvf(aTHX_ msg, " (%"SVf")", SVfARG(cv)); |
ebe643b9 | 5140 | else |
396482e1 GA |
5141 | sv_catpvs(msg, ": none"); |
5142 | sv_catpvs(msg, " vs "); | |
46fc3d4c | 5143 | if (p) |
cbf82dd0 | 5144 | Perl_sv_catpvf(aTHX_ msg, "(%.*s)", (int) len, p); |
46fc3d4c | 5145 | else |
396482e1 | 5146 | sv_catpvs(msg, "none"); |
be2597df | 5147 | Perl_warner(aTHX_ packWARN(WARN_PROTOTYPE), "%"SVf, SVfARG(msg)); |
3fe9a6f1 | 5148 | } |
5149 | } | |
5150 | ||
35f1c1c7 SB |
5151 | static void const_sv_xsub(pTHX_ CV* cv); |
5152 | ||
beab0874 | 5153 | /* |
ccfc67b7 JH |
5154 | |
5155 | =head1 Optree Manipulation Functions | |
5156 | ||
beab0874 JT |
5157 | =for apidoc cv_const_sv |
5158 | ||
5159 | If C<cv> is a constant sub eligible for inlining. returns the constant | |
5160 | value returned by the sub. Otherwise, returns NULL. | |
5161 | ||
5162 | Constant subs can be created with C<newCONSTSUB> or as described in | |
5163 | L<perlsub/"Constant Functions">. | |
5164 | ||
5165 | =cut | |
5166 | */ | |
760ac839 | 5167 | SV * |
864dbfa3 | 5168 | Perl_cv_const_sv(pTHX_ CV *cv) |
760ac839 | 5169 | { |
96a5add6 | 5170 | PERL_UNUSED_CONTEXT; |
5069cc75 NC |
5171 | if (!cv) |
5172 | return NULL; | |
5173 | if (!(SvTYPE(cv) == SVt_PVCV || SvTYPE(cv) == SVt_PVFM)) | |
5174 | return NULL; | |
5175 | return CvCONST(cv) ? (SV*)CvXSUBANY(cv).any_ptr : NULL; | |
fe5e78ed | 5176 | } |
760ac839 | 5177 | |
b5c19bd7 DM |
5178 | /* op_const_sv: examine an optree to determine whether it's in-lineable. |
5179 | * Can be called in 3 ways: | |
5180 | * | |
5181 | * !cv | |
5182 | * look for a single OP_CONST with attached value: return the value | |
5183 | * | |
5184 | * cv && CvCLONE(cv) && !CvCONST(cv) | |
5185 | * | |
5186 | * examine the clone prototype, and if contains only a single | |
5187 | * OP_CONST referencing a pad const, or a single PADSV referencing | |
5188 | * an outer lexical, return a non-zero value to indicate the CV is | |
5189 | * a candidate for "constizing" at clone time | |
5190 | * | |
5191 | * cv && CvCONST(cv) | |
5192 | * | |
5193 | * We have just cloned an anon prototype that was marked as a const | |
5194 | * candidiate. Try to grab the current value, and in the case of | |
5195 | * PADSV, ignore it if it has multiple references. Return the value. | |
5196 | */ | |
5197 | ||
fe5e78ed | 5198 | SV * |
6867be6d | 5199 | Perl_op_const_sv(pTHX_ const OP *o, CV *cv) |
fe5e78ed | 5200 | { |
97aff369 | 5201 | dVAR; |
a0714e2c | 5202 | SV *sv = NULL; |
fe5e78ed | 5203 | |
c631f32b GG |
5204 | if (PL_madskills) |
5205 | return NULL; | |
5206 | ||
0f79a09d | 5207 | if (!o) |
a0714e2c | 5208 | return NULL; |
1c846c1f NIS |
5209 | |
5210 | if (o->op_type == OP_LINESEQ && cLISTOPo->op_first) | |
fe5e78ed GS |
5211 | o = cLISTOPo->op_first->op_sibling; |
5212 | ||
5213 | for (; o; o = o->op_next) { | |
890ce7af | 5214 | const OPCODE type = o->op_type; |
fe5e78ed | 5215 | |
1c846c1f | 5216 | if (sv && o->op_next == o) |
fe5e78ed | 5217 | return sv; |
e576b457 JT |
5218 | if (o->op_next != o) { |
5219 | if (type == OP_NEXTSTATE || type == OP_NULL || type == OP_PUSHMARK) | |
5220 | continue; | |
5221 | if (type == OP_DBSTATE) | |
5222 | continue; | |
5223 | } | |
54310121 | 5224 | if (type == OP_LEAVESUB || type == OP_RETURN) |
5225 | break; | |
5226 | if (sv) | |
a0714e2c | 5227 | return NULL; |
7766f137 | 5228 | if (type == OP_CONST && cSVOPo->op_sv) |
5dc0d613 | 5229 | sv = cSVOPo->op_sv; |
b5c19bd7 | 5230 | else if (cv && type == OP_CONST) { |
dd2155a4 | 5231 | sv = PAD_BASE_SV(CvPADLIST(cv), o->op_targ); |
beab0874 | 5232 | if (!sv) |
a0714e2c | 5233 | return NULL; |
b5c19bd7 DM |
5234 | } |
5235 | else if (cv && type == OP_PADSV) { | |
5236 | if (CvCONST(cv)) { /* newly cloned anon */ | |
5237 | sv = PAD_BASE_SV(CvPADLIST(cv), o->op_targ); | |
5238 | /* the candidate should have 1 ref from this pad and 1 ref | |
5239 | * from the parent */ | |
5240 | if (!sv || SvREFCNT(sv) != 2) | |
a0714e2c | 5241 | return NULL; |
beab0874 | 5242 | sv = newSVsv(sv); |
b5c19bd7 DM |
5243 | SvREADONLY_on(sv); |
5244 | return sv; | |
5245 | } | |
5246 | else { | |
5247 | if (PAD_COMPNAME_FLAGS(o->op_targ) & SVf_FAKE) | |
5248 | sv = &PL_sv_undef; /* an arbitrary non-null value */ | |
beab0874 | 5249 | } |
760ac839 | 5250 | } |
b5c19bd7 | 5251 | else { |
a0714e2c | 5252 | return NULL; |
b5c19bd7 | 5253 | } |
760ac839 LW |
5254 | } |
5255 | return sv; | |
5256 | } | |
5257 | ||
eb8433b7 NC |
5258 | #ifdef PERL_MAD |
5259 | OP * | |
5260 | #else | |
09bef843 | 5261 | void |
eb8433b7 | 5262 | #endif |
09bef843 SB |
5263 | Perl_newMYSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, OP *block) |
5264 | { | |
99129197 NC |
5265 | #if 0 |
5266 | /* This would be the return value, but the return cannot be reached. */ | |
eb8433b7 NC |
5267 | OP* pegop = newOP(OP_NULL, 0); |
5268 | #endif | |
5269 | ||
46c461b5 AL |
5270 | PERL_UNUSED_ARG(floor); |
5271 | ||
09bef843 SB |
5272 | if (o) |
5273 | SAVEFREEOP(o); | |
5274 | if (proto) | |
5275 | SAVEFREEOP(proto); | |
5276 | if (attrs) | |
5277 | SAVEFREEOP(attrs); | |
5278 | if (block) | |
5279 | SAVEFREEOP(block); | |
5280 | Perl_croak(aTHX_ "\"my sub\" not yet implemented"); | |
eb8433b7 | 5281 | #ifdef PERL_MAD |
99129197 | 5282 | NORETURN_FUNCTION_END; |
eb8433b7 | 5283 | #endif |
09bef843 SB |
5284 | } |
5285 | ||
748a9306 | 5286 | CV * |
864dbfa3 | 5287 | Perl_newSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *block) |
79072805 | 5288 | { |
5f66b61c | 5289 | return Perl_newATTRSUB(aTHX_ floor, o, proto, NULL, block); |
09bef843 SB |
5290 | } |
5291 | ||
5292 | CV * | |
5293 | Perl_newATTRSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, OP *block) | |
5294 | { | |
27da23d5 | 5295 | dVAR; |
6867be6d | 5296 | const char *aname; |
83ee9e09 | 5297 | GV *gv; |
5c144d81 | 5298 | const char *ps; |
ea6e9374 | 5299 | STRLEN ps_len; |
c445ea15 | 5300 | register CV *cv = NULL; |
beab0874 | 5301 | SV *const_sv; |
b48b272a NC |
5302 | /* If the subroutine has no body, no attributes, and no builtin attributes |
5303 | then it's just a sub declaration, and we may be able to get away with | |
5304 | storing with a placeholder scalar in the symbol table, rather than a | |
5305 | full GV and CV. If anything is present then it will take a full CV to | |
5306 | store it. */ | |
5307 | const I32 gv_fetch_flags | |
eb8433b7 NC |
5308 | = (block || attrs || (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS) |
5309 | || PL_madskills) | |
b48b272a | 5310 | ? GV_ADDMULTI : GV_ADDMULTI | GV_NOINIT; |
4ea561bc | 5311 | const char * const name = o ? SvPV_nolen_const(cSVOPo->op_sv) : NULL; |
8e742a20 MHM |
5312 | |
5313 | if (proto) { | |
5314 | assert(proto->op_type == OP_CONST); | |
4ea561bc | 5315 | ps = SvPV_const(((SVOP*)proto)->op_sv, ps_len); |
8e742a20 MHM |
5316 | } |
5317 | else | |
bd61b366 | 5318 | ps = NULL; |
8e742a20 | 5319 | |
83ee9e09 | 5320 | if (!name && PERLDB_NAMEANON && CopLINE(PL_curcop)) { |
aec46f14 | 5321 | SV * const sv = sv_newmortal(); |
c99da370 JH |
5322 | Perl_sv_setpvf(aTHX_ sv, "%s[%s:%"IVdf"]", |
5323 | PL_curstash ? "__ANON__" : "__ANON__::__ANON__", | |
83ee9e09 | 5324 | CopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); |
b15aece3 | 5325 | aname = SvPVX_const(sv); |
83ee9e09 GS |
5326 | } |
5327 | else | |
bd61b366 | 5328 | aname = NULL; |
61dbb99a | 5329 | |
61dbb99a | 5330 | gv = name ? gv_fetchsv(cSVOPo->op_sv, gv_fetch_flags, SVt_PVCV) |
666ea192 JH |
5331 | : gv_fetchpv(aname ? aname |
5332 | : (PL_curstash ? "__ANON__" : "__ANON__::__ANON__"), | |
61dbb99a | 5333 | gv_fetch_flags, SVt_PVCV); |
83ee9e09 | 5334 | |
eb8433b7 NC |
5335 | if (!PL_madskills) { |
5336 | if (o) | |
5337 | SAVEFREEOP(o); | |
5338 | if (proto) | |
5339 | SAVEFREEOP(proto); | |
5340 | if (attrs) | |
5341 | SAVEFREEOP(attrs); | |
5342 | } | |
3fe9a6f1 | 5343 | |
09bef843 | 5344 | if (SvTYPE(gv) != SVt_PVGV) { /* Maybe prototype now, and had at |
55d729e4 GS |
5345 | maximum a prototype before. */ |
5346 | if (SvTYPE(gv) > SVt_NULL) { | |
0453d815 | 5347 | if (!SvPOK((SV*)gv) && !(SvIOK((SV*)gv) && SvIVX((SV*)gv) == -1) |
e476b1b5 | 5348 | && ckWARN_d(WARN_PROTOTYPE)) |
f248d071 | 5349 | { |
9014280d | 5350 | Perl_warner(aTHX_ packWARN(WARN_PROTOTYPE), "Runaway prototype"); |
f248d071 | 5351 | } |
cbf82dd0 | 5352 | cv_ckproto_len((CV*)gv, NULL, ps, ps_len); |
55d729e4 GS |
5353 | } |
5354 | if (ps) | |
ea6e9374 | 5355 | sv_setpvn((SV*)gv, ps, ps_len); |
55d729e4 GS |
5356 | else |
5357 | sv_setiv((SV*)gv, -1); | |
e1a479c5 | 5358 | |
3280af22 NIS |
5359 | SvREFCNT_dec(PL_compcv); |
5360 | cv = PL_compcv = NULL; | |
beab0874 | 5361 | goto done; |
55d729e4 GS |
5362 | } |
5363 | ||
601f1833 | 5364 | cv = (!name || GvCVGEN(gv)) ? NULL : GvCV(gv); |
beab0874 | 5365 | |
7fb37951 AMS |
5366 | #ifdef GV_UNIQUE_CHECK |
5367 | if (cv && GvUNIQUE(gv) && SvREADONLY(cv)) { | |
5368 | Perl_croak(aTHX_ "Can't define subroutine %s (GV is unique)", name); | |
5bd07a3d DM |
5369 | } |
5370 | #endif | |
5371 | ||
eb8433b7 NC |
5372 | if (!block || !ps || *ps || attrs |
5373 | || (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS) | |
5374 | #ifdef PERL_MAD | |
5375 | || block->op_type == OP_NULL | |
5376 | #endif | |
5377 | ) | |
a0714e2c | 5378 | const_sv = NULL; |
beab0874 | 5379 | else |
601f1833 | 5380 | const_sv = op_const_sv(block, NULL); |
beab0874 JT |
5381 | |
5382 | if (cv) { | |
6867be6d | 5383 | const bool exists = CvROOT(cv) || CvXSUB(cv); |
5bd07a3d | 5384 | |
7fb37951 AMS |
5385 | #ifdef GV_UNIQUE_CHECK |
5386 | if (exists && GvUNIQUE(gv)) { | |
5387 | Perl_croak(aTHX_ "Can't redefine unique subroutine %s", name); | |
5bd07a3d DM |
5388 | } |
5389 | #endif | |
5390 | ||
60ed1d8c GS |
5391 | /* if the subroutine doesn't exist and wasn't pre-declared |
5392 | * with a prototype, assume it will be AUTOLOADed, | |
5393 | * skipping the prototype check | |
5394 | */ | |
5395 | if (exists || SvPOK(cv)) | |
cbf82dd0 | 5396 | cv_ckproto_len(cv, gv, ps, ps_len); |
68dc0745 | 5397 | /* already defined (or promised)? */ |
60ed1d8c | 5398 | if (exists || GvASSUMECV(gv)) { |
eb8433b7 NC |
5399 | if ((!block |
5400 | #ifdef PERL_MAD | |
5401 | || block->op_type == OP_NULL | |
5402 | #endif | |
5403 | )&& !attrs) { | |
d3cea301 SB |
5404 | if (CvFLAGS(PL_compcv)) { |
5405 | /* might have had built-in attrs applied */ | |
5406 | CvFLAGS(cv) |= (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS); | |
5407 | } | |
aa689395 | 5408 | /* just a "sub foo;" when &foo is already defined */ |
3280af22 | 5409 | SAVEFREESV(PL_compcv); |
aa689395 | 5410 | goto done; |
5411 | } | |
eb8433b7 NC |
5412 | if (block |
5413 | #ifdef PERL_MAD | |
5414 | && block->op_type != OP_NULL | |
5415 | #endif | |
5416 | ) { | |
beab0874 JT |
5417 | if (ckWARN(WARN_REDEFINE) |
5418 | || (CvCONST(cv) | |
5419 | && (!const_sv || sv_cmp(cv_const_sv(cv), const_sv)))) | |
5420 | { | |
6867be6d | 5421 | const line_t oldline = CopLINE(PL_curcop); |
53a7735b DM |
5422 | if (PL_parser && PL_parser->copline != NOLINE) |
5423 | CopLINE_set(PL_curcop, PL_parser->copline); | |
9014280d | 5424 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), |
666ea192 JH |
5425 | CvCONST(cv) ? "Constant subroutine %s redefined" |
5426 | : "Subroutine %s redefined", name); | |
beab0874 JT |
5427 | CopLINE_set(PL_curcop, oldline); |
5428 | } | |
eb8433b7 NC |
5429 | #ifdef PERL_MAD |
5430 | if (!PL_minus_c) /* keep old one around for madskills */ | |
5431 | #endif | |
5432 | { | |
5433 | /* (PL_madskills unset in used file.) */ | |
5434 | SvREFCNT_dec(cv); | |
5435 | } | |
601f1833 | 5436 | cv = NULL; |
79072805 | 5437 | } |
79072805 LW |
5438 | } |
5439 | } | |
beab0874 | 5440 | if (const_sv) { |
f84c484e | 5441 | SvREFCNT_inc_simple_void_NN(const_sv); |
beab0874 | 5442 | if (cv) { |
0768512c | 5443 | assert(!CvROOT(cv) && !CvCONST(cv)); |
c69006e4 | 5444 | sv_setpvn((SV*)cv, "", 0); /* prototype is "" */ |
beab0874 JT |
5445 | CvXSUBANY(cv).any_ptr = const_sv; |
5446 | CvXSUB(cv) = const_sv_xsub; | |
5447 | CvCONST_on(cv); | |
d04ba589 | 5448 | CvISXSUB_on(cv); |
beab0874 JT |
5449 | } |
5450 | else { | |
601f1833 | 5451 | GvCV(gv) = NULL; |
beab0874 JT |
5452 | cv = newCONSTSUB(NULL, name, const_sv); |
5453 | } | |
e1a479c5 BB |
5454 | mro_method_changed_in( /* sub Foo::Bar () { 123 } */ |
5455 | (CvGV(cv) && GvSTASH(CvGV(cv))) | |
5456 | ? GvSTASH(CvGV(cv)) | |
5457 | : CvSTASH(cv) | |
5458 | ? CvSTASH(cv) | |
5459 | : PL_curstash | |
5460 | ); | |
eb8433b7 NC |
5461 | if (PL_madskills) |
5462 | goto install_block; | |
beab0874 JT |
5463 | op_free(block); |
5464 | SvREFCNT_dec(PL_compcv); | |
5465 | PL_compcv = NULL; | |
beab0874 JT |
5466 | goto done; |
5467 | } | |
09bef843 SB |
5468 | if (attrs) { |
5469 | HV *stash; | |
5470 | SV *rcv; | |
5471 | ||
5472 | /* Need to do a C<use attributes $stash_of_cv,\&cv,@attrs> | |
5473 | * before we clobber PL_compcv. | |
5474 | */ | |
99129197 | 5475 | if (cv && (!block |
eb8433b7 NC |
5476 | #ifdef PERL_MAD |
5477 | || block->op_type == OP_NULL | |
5478 | #endif | |
5479 | )) { | |
09bef843 | 5480 | rcv = (SV*)cv; |
020f0e03 SB |
5481 | /* Might have had built-in attributes applied -- propagate them. */ |
5482 | CvFLAGS(cv) |= (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS); | |
a9164de8 | 5483 | if (CvGV(cv) && GvSTASH(CvGV(cv))) |
09bef843 | 5484 | stash = GvSTASH(CvGV(cv)); |
a9164de8 | 5485 | else if (CvSTASH(cv)) |
09bef843 SB |
5486 | stash = CvSTASH(cv); |
5487 | else | |
5488 | stash = PL_curstash; | |
5489 | } | |
5490 | else { | |
5491 | /* possibly about to re-define existing subr -- ignore old cv */ | |
5492 | rcv = (SV*)PL_compcv; | |
a9164de8 | 5493 | if (name && GvSTASH(gv)) |
09bef843 SB |
5494 | stash = GvSTASH(gv); |
5495 | else | |
5496 | stash = PL_curstash; | |
5497 | } | |
95f0a2f1 | 5498 | apply_attrs(stash, rcv, attrs, FALSE); |
09bef843 | 5499 | } |
a0d0e21e | 5500 | if (cv) { /* must reuse cv if autoloaded */ |
eb8433b7 NC |
5501 | if ( |
5502 | #ifdef PERL_MAD | |
5503 | ( | |
5504 | #endif | |
5505 | !block | |
5506 | #ifdef PERL_MAD | |
5507 | || block->op_type == OP_NULL) && !PL_madskills | |
5508 | #endif | |
5509 | ) { | |
09bef843 SB |
5510 | /* got here with just attrs -- work done, so bug out */ |
5511 | SAVEFREESV(PL_compcv); | |
5512 | goto done; | |
5513 | } | |
a3985cdc | 5514 | /* transfer PL_compcv to cv */ |
4633a7c4 | 5515 | cv_undef(cv); |
3280af22 | 5516 | CvFLAGS(cv) = CvFLAGS(PL_compcv); |
5c41a5fa DM |
5517 | if (!CvWEAKOUTSIDE(cv)) |
5518 | SvREFCNT_dec(CvOUTSIDE(cv)); | |
3280af22 | 5519 | CvOUTSIDE(cv) = CvOUTSIDE(PL_compcv); |
a3985cdc | 5520 | CvOUTSIDE_SEQ(cv) = CvOUTSIDE_SEQ(PL_compcv); |
3280af22 NIS |
5521 | CvOUTSIDE(PL_compcv) = 0; |
5522 | CvPADLIST(cv) = CvPADLIST(PL_compcv); | |
5523 | CvPADLIST(PL_compcv) = 0; | |
282f25c9 | 5524 | /* inner references to PL_compcv must be fixed up ... */ |
dd2155a4 | 5525 | pad_fixup_inner_anons(CvPADLIST(cv), PL_compcv, cv); |
282f25c9 | 5526 | /* ... before we throw it away */ |
3280af22 | 5527 | SvREFCNT_dec(PL_compcv); |
b5c19bd7 | 5528 | PL_compcv = cv; |
a933f601 IZ |
5529 | if (PERLDB_INTER)/* Advice debugger on the new sub. */ |
5530 | ++PL_sub_generation; | |
a0d0e21e LW |
5531 | } |
5532 | else { | |
3280af22 | 5533 | cv = PL_compcv; |
44a8e56a | 5534 | if (name) { |
5535 | GvCV(gv) = cv; | |
eb8433b7 NC |
5536 | if (PL_madskills) { |
5537 | if (strEQ(name, "import")) { | |
5538 | PL_formfeed = (SV*)cv; | |
5539 | Perl_warner(aTHX_ packWARN(WARN_VOID), "%lx\n", (long)cv); | |
5540 | } | |
5541 | } | |
44a8e56a | 5542 | GvCVGEN(gv) = 0; |
e1a479c5 | 5543 | mro_method_changed_in(GvSTASH(gv)); /* sub Foo::bar { (shift)+1 } */ |
44a8e56a | 5544 | } |
a0d0e21e | 5545 | } |
65c50114 | 5546 | CvGV(cv) = gv; |
a636914a | 5547 | CvFILE_set_from_cop(cv, PL_curcop); |
3280af22 | 5548 | CvSTASH(cv) = PL_curstash; |
8990e307 | 5549 | |
3fe9a6f1 | 5550 | if (ps) |
ea6e9374 | 5551 | sv_setpvn((SV*)cv, ps, ps_len); |
4633a7c4 | 5552 | |
13765c85 | 5553 | if (PL_parser && PL_parser->error_count) { |
c07a80fd | 5554 | op_free(block); |
5f66b61c | 5555 | block = NULL; |
68dc0745 | 5556 | if (name) { |
6867be6d | 5557 | const char *s = strrchr(name, ':'); |
68dc0745 | 5558 | s = s ? s+1 : name; |
6d4c2119 | 5559 | if (strEQ(s, "BEGIN")) { |
e1ec3a88 | 5560 | const char not_safe[] = |
6d4c2119 | 5561 | "BEGIN not safe after errors--compilation aborted"; |
faef0170 | 5562 | if (PL_in_eval & EVAL_KEEPERR) |
cea2e8a9 | 5563 | Perl_croak(aTHX_ not_safe); |
6d4c2119 CS |
5564 | else { |
5565 | /* force display of errors found but not reported */ | |
38a03e6e | 5566 | sv_catpv(ERRSV, not_safe); |
be2597df | 5567 | Perl_croak(aTHX_ "%"SVf, SVfARG(ERRSV)); |
6d4c2119 CS |
5568 | } |
5569 | } | |
68dc0745 | 5570 | } |
c07a80fd | 5571 | } |
eb8433b7 | 5572 | install_block: |
beab0874 JT |
5573 | if (!block) |
5574 | goto done; | |
a0d0e21e | 5575 | |
7766f137 | 5576 | if (CvLVALUE(cv)) { |
78f9721b SM |
5577 | CvROOT(cv) = newUNOP(OP_LEAVESUBLV, 0, |
5578 | mod(scalarseq(block), OP_LEAVESUBLV)); | |
7e5d8ed2 | 5579 | block->op_attached = 1; |
7766f137 GS |
5580 | } |
5581 | else { | |
09c2fd24 AE |
5582 | /* This makes sub {}; work as expected. */ |
5583 | if (block->op_type == OP_STUB) { | |
1496a290 | 5584 | OP* const newblock = newSTATEOP(0, NULL, 0); |
eb8433b7 NC |
5585 | #ifdef PERL_MAD |
5586 | op_getmad(block,newblock,'B'); | |
5587 | #else | |
09c2fd24 | 5588 | op_free(block); |
eb8433b7 NC |
5589 | #endif |
5590 | block = newblock; | |
09c2fd24 | 5591 | } |
7e5d8ed2 DM |
5592 | else |
5593 | block->op_attached = 1; | |
7766f137 GS |
5594 | CvROOT(cv) = newUNOP(OP_LEAVESUB, 0, scalarseq(block)); |
5595 | } | |
5596 | CvROOT(cv)->op_private |= OPpREFCOUNTED; | |
5597 | OpREFCNT_set(CvROOT(cv), 1); | |
5598 | CvSTART(cv) = LINKLIST(CvROOT(cv)); | |
5599 | CvROOT(cv)->op_next = 0; | |
a2efc822 | 5600 | CALL_PEEP(CvSTART(cv)); |
7766f137 GS |
5601 | |
5602 | /* now that optimizer has done its work, adjust pad values */ | |
54310121 | 5603 | |
dd2155a4 DM |
5604 | pad_tidy(CvCLONE(cv) ? padtidy_SUBCLONE : padtidy_SUB); |
5605 | ||
5606 | if (CvCLONE(cv)) { | |
beab0874 JT |
5607 | assert(!CvCONST(cv)); |
5608 | if (ps && !*ps && op_const_sv(block, cv)) | |
5609 | CvCONST_on(cv); | |
a0d0e21e | 5610 | } |
79072805 | 5611 | |
83ee9e09 | 5612 | if (name || aname) { |
3280af22 | 5613 | if (PERLDB_SUBLINE && PL_curstash != PL_debstash) { |
561b68a9 | 5614 | SV * const sv = newSV(0); |
c4420975 | 5615 | SV * const tmpstr = sv_newmortal(); |
5c1737d1 NC |
5616 | GV * const db_postponed = gv_fetchpvs("DB::postponed", |
5617 | GV_ADDMULTI, SVt_PVHV); | |
44a8e56a | 5618 | HV *hv; |
5619 | ||
ed094faf GS |
5620 | Perl_sv_setpvf(aTHX_ sv, "%s:%ld-%ld", |
5621 | CopFILE(PL_curcop), | |
cc49e20b | 5622 | (long)PL_subline, (long)CopLINE(PL_curcop)); |
bd61b366 | 5623 | gv_efullname3(tmpstr, gv, NULL); |
04fe65b0 RGS |
5624 | (void)hv_store(GvHV(PL_DBsub), SvPVX_const(tmpstr), |
5625 | SvCUR(tmpstr), sv, 0); | |
44a8e56a | 5626 | hv = GvHVn(db_postponed); |
551405c4 AL |
5627 | if (HvFILL(hv) > 0 && hv_exists(hv, SvPVX_const(tmpstr), SvCUR(tmpstr))) { |
5628 | CV * const pcv = GvCV(db_postponed); | |
5629 | if (pcv) { | |
5630 | dSP; | |
5631 | PUSHMARK(SP); | |
5632 | XPUSHs(tmpstr); | |
5633 | PUTBACK; | |
5634 | call_sv((SV*)pcv, G_DISCARD); | |
5635 | } | |
44a8e56a | 5636 | } |
5637 | } | |
79072805 | 5638 | |
13765c85 | 5639 | if (name && ! (PL_parser && PL_parser->error_count)) |
0cd10f52 | 5640 | process_special_blocks(name, gv, cv); |
33fb7a6e | 5641 | } |
ed094faf | 5642 | |
33fb7a6e | 5643 | done: |
53a7735b DM |
5644 | if (PL_parser) |
5645 | PL_parser->copline = NOLINE; | |
33fb7a6e NC |
5646 | LEAVE_SCOPE(floor); |
5647 | return cv; | |
5648 | } | |
ed094faf | 5649 | |
33fb7a6e NC |
5650 | STATIC void |
5651 | S_process_special_blocks(pTHX_ const char *const fullname, GV *const gv, | |
5652 | CV *const cv) | |
5653 | { | |
5654 | const char *const colon = strrchr(fullname,':'); | |
5655 | const char *const name = colon ? colon + 1 : fullname; | |
5656 | ||
5657 | if (*name == 'B') { | |
6952d67e | 5658 | if (strEQ(name, "BEGIN")) { |
6867be6d | 5659 | const I32 oldscope = PL_scopestack_ix; |
28757baa | 5660 | ENTER; |
57843af0 GS |
5661 | SAVECOPFILE(&PL_compiling); |
5662 | SAVECOPLINE(&PL_compiling); | |
28757baa | 5663 | |
28757baa | 5664 | DEBUG_x( dump_sub(gv) ); |
29a861e7 | 5665 | Perl_av_create_and_push(aTHX_ &PL_beginav, (SV*)cv); |
ea2f84a3 | 5666 | GvCV(gv) = 0; /* cv has been hijacked */ |
3280af22 | 5667 | call_list(oldscope, PL_beginav); |
a6006777 | 5668 | |
3280af22 | 5669 | PL_curcop = &PL_compiling; |
623e6609 | 5670 | CopHINTS_set(&PL_compiling, PL_hints); |
28757baa | 5671 | LEAVE; |
5672 | } | |
33fb7a6e NC |
5673 | else |
5674 | return; | |
5675 | } else { | |
5676 | if (*name == 'E') { | |
5677 | if strEQ(name, "END") { | |
5678 | DEBUG_x( dump_sub(gv) ); | |
5679 | Perl_av_create_and_unshift_one(aTHX_ &PL_endav, (SV*)cv); | |
5680 | } else | |
5681 | return; | |
5682 | } else if (*name == 'U') { | |
5683 | if (strEQ(name, "UNITCHECK")) { | |
5684 | /* It's never too late to run a unitcheck block */ | |
5685 | Perl_av_create_and_unshift_one(aTHX_ &PL_unitcheckav, (SV*)cv); | |
5686 | } | |
5687 | else | |
5688 | return; | |
5689 | } else if (*name == 'C') { | |
5690 | if (strEQ(name, "CHECK")) { | |
5691 | if (PL_main_start && ckWARN(WARN_VOID)) | |
5692 | Perl_warner(aTHX_ packWARN(WARN_VOID), | |
5693 | "Too late to run CHECK block"); | |
5694 | Perl_av_create_and_unshift_one(aTHX_ &PL_checkav, (SV*)cv); | |
5695 | } | |
5696 | else | |
5697 | return; | |
5698 | } else if (*name == 'I') { | |
5699 | if (strEQ(name, "INIT")) { | |
5700 | if (PL_main_start && ckWARN(WARN_VOID)) | |
5701 | Perl_warner(aTHX_ packWARN(WARN_VOID), | |
5702 | "Too late to run INIT block"); | |
5703 | Perl_av_create_and_push(aTHX_ &PL_initav, (SV*)cv); | |
5704 | } | |
5705 | else | |
5706 | return; | |
5707 | } else | |
5708 | return; | |
5709 | DEBUG_x( dump_sub(gv) ); | |
5710 | GvCV(gv) = 0; /* cv has been hijacked */ | |
79072805 | 5711 | } |
79072805 LW |
5712 | } |
5713 | ||
954c1994 GS |
5714 | /* |
5715 | =for apidoc newCONSTSUB | |
5716 | ||
5717 | Creates a constant sub equivalent to Perl C<sub FOO () { 123 }> which is | |
5718 | eligible for inlining at compile-time. | |
5719 | ||
5720 | =cut | |
5721 | */ | |
5722 | ||
beab0874 | 5723 | CV * |
e1ec3a88 | 5724 | Perl_newCONSTSUB(pTHX_ HV *stash, const char *name, SV *sv) |
5476c433 | 5725 | { |
27da23d5 | 5726 | dVAR; |
beab0874 | 5727 | CV* cv; |
cbf82dd0 NC |
5728 | #ifdef USE_ITHREADS |
5729 | const char *const temp_p = CopFILE(PL_curcop); | |
07fcac01 | 5730 | const STRLEN len = temp_p ? strlen(temp_p) : 0; |
cbf82dd0 NC |
5731 | #else |
5732 | SV *const temp_sv = CopFILESV(PL_curcop); | |
5733 | STRLEN len; | |
5734 | const char *const temp_p = temp_sv ? SvPV_const(temp_sv, len) : NULL; | |
5735 | #endif | |
07fcac01 | 5736 | char *const file = savepvn(temp_p, temp_p ? len : 0); |
5476c433 | 5737 | |
11faa288 | 5738 | ENTER; |
11faa288 | 5739 | |
401667e9 DM |
5740 | if (IN_PERL_RUNTIME) { |
5741 | /* at runtime, it's not safe to manipulate PL_curcop: it may be | |
5742 | * an op shared between threads. Use a non-shared COP for our | |
5743 | * dirty work */ | |
5744 | SAVEVPTR(PL_curcop); | |
5745 | PL_curcop = &PL_compiling; | |
5746 | } | |
f4dd75d9 | 5747 | SAVECOPLINE(PL_curcop); |
53a7735b | 5748 | CopLINE_set(PL_curcop, PL_parser ? PL_parser->copline : NOLINE); |
f4dd75d9 GS |
5749 | |
5750 | SAVEHINTS(); | |
3280af22 | 5751 | PL_hints &= ~HINT_BLOCK_SCOPE; |
11faa288 GS |
5752 | |
5753 | if (stash) { | |
5754 | SAVESPTR(PL_curstash); | |
5755 | SAVECOPSTASH(PL_curcop); | |
5756 | PL_curstash = stash; | |
05ec9bb3 | 5757 | CopSTASH_set(PL_curcop,stash); |
11faa288 | 5758 | } |
5476c433 | 5759 | |
cbf82dd0 NC |
5760 | /* file becomes the CvFILE. For an XS, it's supposed to be static storage, |
5761 | and so doesn't get free()d. (It's expected to be from the C pre- | |
5762 | processor __FILE__ directive). But we need a dynamically allocated one, | |
77004dee NC |
5763 | and we need it to get freed. */ |
5764 | cv = newXS_flags(name, const_sv_xsub, file, "", XS_DYNAMIC_FILENAME); | |
beab0874 JT |
5765 | CvXSUBANY(cv).any_ptr = sv; |
5766 | CvCONST_on(cv); | |
c3db7d92 | 5767 | Safefree(file); |
5476c433 | 5768 | |
65e66c80 | 5769 | #ifdef USE_ITHREADS |
02f28d44 MHM |
5770 | if (stash) |
5771 | CopSTASH_free(PL_curcop); | |
65e66c80 | 5772 | #endif |
11faa288 | 5773 | LEAVE; |
beab0874 JT |
5774 | |
5775 | return cv; | |
5476c433 JD |
5776 | } |
5777 | ||
77004dee NC |
5778 | CV * |
5779 | Perl_newXS_flags(pTHX_ const char *name, XSUBADDR_t subaddr, | |
5780 | const char *const filename, const char *const proto, | |
5781 | U32 flags) | |
5782 | { | |
5783 | CV *cv = newXS(name, subaddr, filename); | |
5784 | ||
5785 | if (flags & XS_DYNAMIC_FILENAME) { | |
5786 | /* We need to "make arrangements" (ie cheat) to ensure that the | |
5787 | filename lasts as long as the PVCV we just created, but also doesn't | |
5788 | leak */ | |
5789 | STRLEN filename_len = strlen(filename); | |
5790 | STRLEN proto_and_file_len = filename_len; | |
5791 | char *proto_and_file; | |
5792 | STRLEN proto_len; | |
5793 | ||
5794 | if (proto) { | |
5795 | proto_len = strlen(proto); | |
5796 | proto_and_file_len += proto_len; | |
5797 | ||
5798 | Newx(proto_and_file, proto_and_file_len + 1, char); | |
5799 | Copy(proto, proto_and_file, proto_len, char); | |
5800 | Copy(filename, proto_and_file + proto_len, filename_len + 1, char); | |
5801 | } else { | |
5802 | proto_len = 0; | |
5803 | proto_and_file = savepvn(filename, filename_len); | |
5804 | } | |
5805 | ||
5806 | /* This gets free()d. :-) */ | |
5807 | sv_usepvn_flags((SV*)cv, proto_and_file, proto_and_file_len, | |
5808 | SV_HAS_TRAILING_NUL); | |
5809 | if (proto) { | |
5810 | /* This gives us the correct prototype, rather than one with the | |
5811 | file name appended. */ | |
5812 | SvCUR_set(cv, proto_len); | |
5813 | } else { | |
5814 | SvPOK_off(cv); | |
5815 | } | |
81a2b3b6 | 5816 | CvFILE(cv) = proto_and_file + proto_len; |
77004dee NC |
5817 | } else { |
5818 | sv_setpv((SV *)cv, proto); | |
5819 | } | |
5820 | return cv; | |
5821 | } | |
5822 | ||
954c1994 GS |
5823 | /* |
5824 | =for apidoc U||newXS | |
5825 | ||
77004dee NC |
5826 | Used by C<xsubpp> to hook up XSUBs as Perl subs. I<filename> needs to be |
5827 | static storage, as it is used directly as CvFILE(), without a copy being made. | |
954c1994 GS |
5828 | |
5829 | =cut | |
5830 | */ | |
5831 | ||
57d3b86d | 5832 | CV * |
bfed75c6 | 5833 | Perl_newXS(pTHX_ const char *name, XSUBADDR_t subaddr, const char *filename) |
a0d0e21e | 5834 | { |
97aff369 | 5835 | dVAR; |
666ea192 JH |
5836 | GV * const gv = gv_fetchpv(name ? name : |
5837 | (PL_curstash ? "__ANON__" : "__ANON__::__ANON__"), | |
5838 | GV_ADDMULTI, SVt_PVCV); | |
79072805 | 5839 | register CV *cv; |
44a8e56a | 5840 | |
1ecdd9a8 HS |
5841 | if (!subaddr) |
5842 | Perl_croak(aTHX_ "panic: no address for '%s' in '%s'", name, filename); | |
5843 | ||
601f1833 | 5844 | if ((cv = (name ? GvCV(gv) : NULL))) { |
44a8e56a | 5845 | if (GvCVGEN(gv)) { |
5846 | /* just a cached method */ | |
5847 | SvREFCNT_dec(cv); | |
601f1833 | 5848 | cv = NULL; |
44a8e56a | 5849 | } |
5850 | else if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
5851 | /* already defined (or promised) */ | |
1df70142 | 5852 | /* XXX It's possible for this HvNAME_get to return null, and get passed into strEQ */ |
66a1b24b AL |
5853 | if (ckWARN(WARN_REDEFINE)) { |
5854 | GV * const gvcv = CvGV(cv); | |
5855 | if (gvcv) { | |
5856 | HV * const stash = GvSTASH(gvcv); | |
5857 | if (stash) { | |
8b38226b AL |
5858 | const char *redefined_name = HvNAME_get(stash); |
5859 | if ( strEQ(redefined_name,"autouse") ) { | |
66a1b24b | 5860 | const line_t oldline = CopLINE(PL_curcop); |
53a7735b DM |
5861 | if (PL_parser && PL_parser->copline != NOLINE) |
5862 | CopLINE_set(PL_curcop, PL_parser->copline); | |
66a1b24b | 5863 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), |
666ea192 JH |
5864 | CvCONST(cv) ? "Constant subroutine %s redefined" |
5865 | : "Subroutine %s redefined" | |
5866 | ,name); | |
66a1b24b AL |
5867 | CopLINE_set(PL_curcop, oldline); |
5868 | } | |
5869 | } | |
5870 | } | |
a0d0e21e LW |
5871 | } |
5872 | SvREFCNT_dec(cv); | |
601f1833 | 5873 | cv = NULL; |
79072805 | 5874 | } |
79072805 | 5875 | } |
44a8e56a | 5876 | |
5877 | if (cv) /* must reuse cv if autoloaded */ | |
5878 | cv_undef(cv); | |
a0d0e21e | 5879 | else { |
b9f83d2f | 5880 | cv = (CV*)newSV_type(SVt_PVCV); |
44a8e56a | 5881 | if (name) { |
5882 | GvCV(gv) = cv; | |
5883 | GvCVGEN(gv) = 0; | |
e1a479c5 | 5884 | mro_method_changed_in(GvSTASH(gv)); /* newXS */ |
44a8e56a | 5885 | } |
a0d0e21e | 5886 | } |
65c50114 | 5887 | CvGV(cv) = gv; |
b195d487 | 5888 | (void)gv_fetchfile(filename); |
dd374669 | 5889 | CvFILE(cv) = (char *)filename; /* NOTE: not copied, as it is expected to be |
57843af0 | 5890 | an external constant string */ |
d04ba589 | 5891 | CvISXSUB_on(cv); |
a0d0e21e | 5892 | CvXSUB(cv) = subaddr; |
44a8e56a | 5893 | |
33fb7a6e NC |
5894 | if (name) |
5895 | process_special_blocks(name, gv, cv); | |
8990e307 | 5896 | else |
a5f75d66 | 5897 | CvANON_on(cv); |
44a8e56a | 5898 | |
a0d0e21e | 5899 | return cv; |
79072805 LW |
5900 | } |
5901 | ||
eb8433b7 NC |
5902 | #ifdef PERL_MAD |
5903 | OP * | |
5904 | #else | |
79072805 | 5905 | void |
eb8433b7 | 5906 | #endif |
864dbfa3 | 5907 | Perl_newFORM(pTHX_ I32 floor, OP *o, OP *block) |
79072805 | 5908 | { |
97aff369 | 5909 | dVAR; |
79072805 | 5910 | register CV *cv; |
eb8433b7 NC |
5911 | #ifdef PERL_MAD |
5912 | OP* pegop = newOP(OP_NULL, 0); | |
5913 | #endif | |
79072805 | 5914 | |
0bd48802 | 5915 | GV * const gv = o |
f776e3cd | 5916 | ? gv_fetchsv(cSVOPo->op_sv, GV_ADD, SVt_PVFM) |
fafc274c | 5917 | : gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVFM); |
0bd48802 | 5918 | |
7fb37951 AMS |
5919 | #ifdef GV_UNIQUE_CHECK |
5920 | if (GvUNIQUE(gv)) { | |
666ea192 | 5921 | Perl_croak(aTHX_ "Bad symbol for form (GV is unique)"); |
5bd07a3d DM |
5922 | } |
5923 | #endif | |
a5f75d66 | 5924 | GvMULTI_on(gv); |
155aba94 | 5925 | if ((cv = GvFORM(gv))) { |
599cee73 | 5926 | if (ckWARN(WARN_REDEFINE)) { |
6867be6d | 5927 | const line_t oldline = CopLINE(PL_curcop); |
53a7735b DM |
5928 | if (PL_parser && PL_parser->copline != NOLINE) |
5929 | CopLINE_set(PL_curcop, PL_parser->copline); | |
7a5fd60d | 5930 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), |
666ea192 | 5931 | o ? "Format %"SVf" redefined" |
be2597df | 5932 | : "Format STDOUT redefined", SVfARG(cSVOPo->op_sv)); |
57843af0 | 5933 | CopLINE_set(PL_curcop, oldline); |
79072805 | 5934 | } |
8990e307 | 5935 | SvREFCNT_dec(cv); |
79072805 | 5936 | } |
3280af22 | 5937 | cv = PL_compcv; |
79072805 | 5938 | GvFORM(gv) = cv; |
65c50114 | 5939 | CvGV(cv) = gv; |
a636914a | 5940 | CvFILE_set_from_cop(cv, PL_curcop); |
79072805 | 5941 | |
a0d0e21e | 5942 | |
dd2155a4 | 5943 | pad_tidy(padtidy_FORMAT); |
79072805 | 5944 | CvROOT(cv) = newUNOP(OP_LEAVEWRITE, 0, scalarseq(block)); |
7934575e GS |
5945 | CvROOT(cv)->op_private |= OPpREFCOUNTED; |
5946 | OpREFCNT_set(CvROOT(cv), 1); | |
79072805 LW |
5947 | CvSTART(cv) = LINKLIST(CvROOT(cv)); |
5948 | CvROOT(cv)->op_next = 0; | |
a2efc822 | 5949 | CALL_PEEP(CvSTART(cv)); |
eb8433b7 NC |
5950 | #ifdef PERL_MAD |
5951 | op_getmad(o,pegop,'n'); | |
5952 | op_getmad_weak(block, pegop, 'b'); | |
5953 | #else | |
11343788 | 5954 | op_free(o); |
eb8433b7 | 5955 | #endif |
53a7735b DM |
5956 | if (PL_parser) |
5957 | PL_parser->copline = NOLINE; | |
8990e307 | 5958 | LEAVE_SCOPE(floor); |
eb8433b7 NC |
5959 | #ifdef PERL_MAD |
5960 | return pegop; | |
5961 | #endif | |
79072805 LW |
5962 | } |
5963 | ||
5964 | OP * | |
864dbfa3 | 5965 | Perl_newANONLIST(pTHX_ OP *o) |
79072805 | 5966 | { |
78c72037 | 5967 | return convert(OP_ANONLIST, OPf_SPECIAL, o); |
79072805 LW |
5968 | } |
5969 | ||
5970 | OP * | |
864dbfa3 | 5971 | Perl_newANONHASH(pTHX_ OP *o) |
79072805 | 5972 | { |
78c72037 | 5973 | return convert(OP_ANONHASH, OPf_SPECIAL, o); |
a0d0e21e LW |
5974 | } |
5975 | ||
5976 | OP * | |
864dbfa3 | 5977 | Perl_newANONSUB(pTHX_ I32 floor, OP *proto, OP *block) |
a0d0e21e | 5978 | { |
5f66b61c | 5979 | return newANONATTRSUB(floor, proto, NULL, block); |
09bef843 SB |
5980 | } |
5981 | ||
5982 | OP * | |
5983 | Perl_newANONATTRSUB(pTHX_ I32 floor, OP *proto, OP *attrs, OP *block) | |
5984 | { | |
a0d0e21e | 5985 | return newUNOP(OP_REFGEN, 0, |
09bef843 SB |
5986 | newSVOP(OP_ANONCODE, 0, |
5987 | (SV*)newATTRSUB(floor, 0, proto, attrs, block))); | |
79072805 LW |
5988 | } |
5989 | ||
5990 | OP * | |
864dbfa3 | 5991 | Perl_oopsAV(pTHX_ OP *o) |
79072805 | 5992 | { |
27da23d5 | 5993 | dVAR; |
ed6116ce LW |
5994 | switch (o->op_type) { |
5995 | case OP_PADSV: | |
5996 | o->op_type = OP_PADAV; | |
22c35a8c | 5997 | o->op_ppaddr = PL_ppaddr[OP_PADAV]; |
51e247a3 | 5998 | return ref(o, OP_RV2AV); |
b2ffa427 | 5999 | |
ed6116ce | 6000 | case OP_RV2SV: |
79072805 | 6001 | o->op_type = OP_RV2AV; |
22c35a8c | 6002 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
79072805 | 6003 | ref(o, OP_RV2AV); |
ed6116ce LW |
6004 | break; |
6005 | ||
6006 | default: | |
0453d815 | 6007 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 6008 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "oops: oopsAV"); |
ed6116ce LW |
6009 | break; |
6010 | } | |
79072805 LW |
6011 | return o; |
6012 | } | |
6013 | ||
6014 | OP * | |
864dbfa3 | 6015 | Perl_oopsHV(pTHX_ OP *o) |
79072805 | 6016 | { |
27da23d5 | 6017 | dVAR; |
ed6116ce LW |
6018 | switch (o->op_type) { |
6019 | case OP_PADSV: | |
6020 | case OP_PADAV: | |
6021 | o->op_type = OP_PADHV; | |
22c35a8c | 6022 | o->op_ppaddr = PL_ppaddr[OP_PADHV]; |
51e247a3 | 6023 | return ref(o, OP_RV2HV); |
ed6116ce LW |
6024 | |
6025 | case OP_RV2SV: | |
6026 | case OP_RV2AV: | |
79072805 | 6027 | o->op_type = OP_RV2HV; |
22c35a8c | 6028 | o->op_ppaddr = PL_ppaddr[OP_RV2HV]; |
79072805 | 6029 | ref(o, OP_RV2HV); |
ed6116ce LW |
6030 | break; |
6031 | ||
6032 | default: | |
0453d815 | 6033 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 6034 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "oops: oopsHV"); |
ed6116ce LW |
6035 | break; |
6036 | } | |
79072805 LW |
6037 | return o; |
6038 | } | |
6039 | ||
6040 | OP * | |
864dbfa3 | 6041 | Perl_newAVREF(pTHX_ OP *o) |
79072805 | 6042 | { |
27da23d5 | 6043 | dVAR; |
ed6116ce LW |
6044 | if (o->op_type == OP_PADANY) { |
6045 | o->op_type = OP_PADAV; | |
22c35a8c | 6046 | o->op_ppaddr = PL_ppaddr[OP_PADAV]; |
93a17b20 | 6047 | return o; |
ed6116ce | 6048 | } |
a1063b2d | 6049 | else if ((o->op_type == OP_RV2AV || o->op_type == OP_PADAV) |
9014280d PM |
6050 | && ckWARN(WARN_DEPRECATED)) { |
6051 | Perl_warner(aTHX_ packWARN(WARN_DEPRECATED), | |
a1063b2d RH |
6052 | "Using an array as a reference is deprecated"); |
6053 | } | |
79072805 LW |
6054 | return newUNOP(OP_RV2AV, 0, scalar(o)); |
6055 | } | |
6056 | ||
6057 | OP * | |
864dbfa3 | 6058 | Perl_newGVREF(pTHX_ I32 type, OP *o) |
79072805 | 6059 | { |
82092f1d | 6060 | if (type == OP_MAPSTART || type == OP_GREPSTART || type == OP_SORT) |
a0d0e21e | 6061 | return newUNOP(OP_NULL, 0, o); |
748a9306 | 6062 | return ref(newUNOP(OP_RV2GV, OPf_REF, o), type); |
79072805 LW |
6063 | } |
6064 | ||
6065 | OP * | |
864dbfa3 | 6066 | Perl_newHVREF(pTHX_ OP *o) |
79072805 | 6067 | { |
27da23d5 | 6068 | dVAR; |
ed6116ce LW |
6069 | if (o->op_type == OP_PADANY) { |
6070 | o->op_type = OP_PADHV; | |
22c35a8c | 6071 | o->op_ppaddr = PL_ppaddr[OP_PADHV]; |
93a17b20 | 6072 | return o; |
ed6116ce | 6073 | } |
a1063b2d | 6074 | else if ((o->op_type == OP_RV2HV || o->op_type == OP_PADHV) |
9014280d PM |
6075 | && ckWARN(WARN_DEPRECATED)) { |
6076 | Perl_warner(aTHX_ packWARN(WARN_DEPRECATED), | |
a1063b2d RH |
6077 | "Using a hash as a reference is deprecated"); |
6078 | } | |
79072805 LW |
6079 | return newUNOP(OP_RV2HV, 0, scalar(o)); |
6080 | } | |
6081 | ||
6082 | OP * | |
864dbfa3 | 6083 | Perl_newCVREF(pTHX_ I32 flags, OP *o) |
79072805 | 6084 | { |
c07a80fd | 6085 | return newUNOP(OP_RV2CV, flags, scalar(o)); |
79072805 LW |
6086 | } |
6087 | ||
6088 | OP * | |
864dbfa3 | 6089 | Perl_newSVREF(pTHX_ OP *o) |
79072805 | 6090 | { |
27da23d5 | 6091 | dVAR; |
ed6116ce LW |
6092 | if (o->op_type == OP_PADANY) { |
6093 | o->op_type = OP_PADSV; | |
22c35a8c | 6094 | o->op_ppaddr = PL_ppaddr[OP_PADSV]; |
93a17b20 | 6095 | return o; |
ed6116ce | 6096 | } |
79072805 LW |
6097 | return newUNOP(OP_RV2SV, 0, scalar(o)); |
6098 | } | |
6099 | ||
61b743bb DM |
6100 | /* Check routines. See the comments at the top of this file for details |
6101 | * on when these are called */ | |
79072805 LW |
6102 | |
6103 | OP * | |
cea2e8a9 | 6104 | Perl_ck_anoncode(pTHX_ OP *o) |
5f05dabc | 6105 | { |
dd2155a4 | 6106 | cSVOPo->op_targ = pad_add_anon(cSVOPo->op_sv, o->op_type); |
eb8433b7 | 6107 | if (!PL_madskills) |
1d866c12 | 6108 | cSVOPo->op_sv = NULL; |
5dc0d613 | 6109 | return o; |
5f05dabc | 6110 | } |
6111 | ||
6112 | OP * | |
cea2e8a9 | 6113 | Perl_ck_bitop(pTHX_ OP *o) |
55497cff | 6114 | { |
97aff369 | 6115 | dVAR; |
276b2a0c RGS |
6116 | #define OP_IS_NUMCOMPARE(op) \ |
6117 | ((op) == OP_LT || (op) == OP_I_LT || \ | |
6118 | (op) == OP_GT || (op) == OP_I_GT || \ | |
6119 | (op) == OP_LE || (op) == OP_I_LE || \ | |
6120 | (op) == OP_GE || (op) == OP_I_GE || \ | |
6121 | (op) == OP_EQ || (op) == OP_I_EQ || \ | |
6122 | (op) == OP_NE || (op) == OP_I_NE || \ | |
6123 | (op) == OP_NCMP || (op) == OP_I_NCMP) | |
d5ec2987 | 6124 | o->op_private = (U8)(PL_hints & HINT_INTEGER); |
2b84528b RGS |
6125 | if (!(o->op_flags & OPf_STACKED) /* Not an assignment */ |
6126 | && (o->op_type == OP_BIT_OR | |
6127 | || o->op_type == OP_BIT_AND | |
6128 | || o->op_type == OP_BIT_XOR)) | |
276b2a0c | 6129 | { |
1df70142 AL |
6130 | const OP * const left = cBINOPo->op_first; |
6131 | const OP * const right = left->op_sibling; | |
96a925ab YST |
6132 | if ((OP_IS_NUMCOMPARE(left->op_type) && |
6133 | (left->op_flags & OPf_PARENS) == 0) || | |
6134 | (OP_IS_NUMCOMPARE(right->op_type) && | |
6135 | (right->op_flags & OPf_PARENS) == 0)) | |
276b2a0c RGS |
6136 | if (ckWARN(WARN_PRECEDENCE)) |
6137 | Perl_warner(aTHX_ packWARN(WARN_PRECEDENCE), | |
6138 | "Possible precedence problem on bitwise %c operator", | |
6139 | o->op_type == OP_BIT_OR ? '|' | |
6140 | : o->op_type == OP_BIT_AND ? '&' : '^' | |
6141 | ); | |
6142 | } | |
5dc0d613 | 6143 | return o; |
55497cff | 6144 | } |
6145 | ||
6146 | OP * | |
cea2e8a9 | 6147 | Perl_ck_concat(pTHX_ OP *o) |
79072805 | 6148 | { |
0bd48802 | 6149 | const OP * const kid = cUNOPo->op_first; |
96a5add6 | 6150 | PERL_UNUSED_CONTEXT; |
df91b2c5 AE |
6151 | if (kid->op_type == OP_CONCAT && !(kid->op_private & OPpTARGET_MY) && |
6152 | !(kUNOP->op_first->op_flags & OPf_MOD)) | |
0165acc7 | 6153 | o->op_flags |= OPf_STACKED; |
11343788 | 6154 | return o; |
79072805 LW |
6155 | } |
6156 | ||
6157 | OP * | |
cea2e8a9 | 6158 | Perl_ck_spair(pTHX_ OP *o) |
79072805 | 6159 | { |
27da23d5 | 6160 | dVAR; |
11343788 | 6161 | if (o->op_flags & OPf_KIDS) { |
79072805 | 6162 | OP* newop; |
a0d0e21e | 6163 | OP* kid; |
6867be6d | 6164 | const OPCODE type = o->op_type; |
5dc0d613 | 6165 | o = modkids(ck_fun(o), type); |
11343788 | 6166 | kid = cUNOPo->op_first; |
a0d0e21e | 6167 | newop = kUNOP->op_first->op_sibling; |
1496a290 AL |
6168 | if (newop) { |
6169 | const OPCODE type = newop->op_type; | |
6170 | if (newop->op_sibling || !(PL_opargs[type] & OA_RETSCALAR) || | |
6171 | type == OP_PADAV || type == OP_PADHV || | |
6172 | type == OP_RV2AV || type == OP_RV2HV) | |
6173 | return o; | |
a0d0e21e | 6174 | } |
eb8433b7 NC |
6175 | #ifdef PERL_MAD |
6176 | op_getmad(kUNOP->op_first,newop,'K'); | |
6177 | #else | |
a0d0e21e | 6178 | op_free(kUNOP->op_first); |
eb8433b7 | 6179 | #endif |
a0d0e21e LW |
6180 | kUNOP->op_first = newop; |
6181 | } | |
22c35a8c | 6182 | o->op_ppaddr = PL_ppaddr[++o->op_type]; |
11343788 | 6183 | return ck_fun(o); |
a0d0e21e LW |
6184 | } |
6185 | ||
6186 | OP * | |
cea2e8a9 | 6187 | Perl_ck_delete(pTHX_ OP *o) |
a0d0e21e | 6188 | { |
11343788 | 6189 | o = ck_fun(o); |
5dc0d613 | 6190 | o->op_private = 0; |
11343788 | 6191 | if (o->op_flags & OPf_KIDS) { |
551405c4 | 6192 | OP * const kid = cUNOPo->op_first; |
01020589 GS |
6193 | switch (kid->op_type) { |
6194 | case OP_ASLICE: | |
6195 | o->op_flags |= OPf_SPECIAL; | |
6196 | /* FALL THROUGH */ | |
6197 | case OP_HSLICE: | |
5dc0d613 | 6198 | o->op_private |= OPpSLICE; |
01020589 GS |
6199 | break; |
6200 | case OP_AELEM: | |
6201 | o->op_flags |= OPf_SPECIAL; | |
6202 | /* FALL THROUGH */ | |
6203 | case OP_HELEM: | |
6204 | break; | |
6205 | default: | |
6206 | Perl_croak(aTHX_ "%s argument is not a HASH or ARRAY element or slice", | |
53e06cf0 | 6207 | OP_DESC(o)); |
01020589 | 6208 | } |
93c66552 | 6209 | op_null(kid); |
79072805 | 6210 | } |
11343788 | 6211 | return o; |
79072805 LW |
6212 | } |
6213 | ||
6214 | OP * | |
96e176bf CL |
6215 | Perl_ck_die(pTHX_ OP *o) |
6216 | { | |
6217 | #ifdef VMS | |
6218 | if (VMSISH_HUSHED) o->op_private |= OPpHUSH_VMSISH; | |
6219 | #endif | |
6220 | return ck_fun(o); | |
6221 | } | |
6222 | ||
6223 | OP * | |
cea2e8a9 | 6224 | Perl_ck_eof(pTHX_ OP *o) |
79072805 | 6225 | { |
97aff369 | 6226 | dVAR; |
79072805 | 6227 | |
11343788 MB |
6228 | if (o->op_flags & OPf_KIDS) { |
6229 | if (cLISTOPo->op_first->op_type == OP_STUB) { | |
1d866c12 AL |
6230 | OP * const newop |
6231 | = newUNOP(o->op_type, OPf_SPECIAL, newGVOP(OP_GV, 0, PL_argvgv)); | |
eb8433b7 NC |
6232 | #ifdef PERL_MAD |
6233 | op_getmad(o,newop,'O'); | |
6234 | #else | |
11343788 | 6235 | op_free(o); |
eb8433b7 NC |
6236 | #endif |
6237 | o = newop; | |
8990e307 | 6238 | } |
11343788 | 6239 | return ck_fun(o); |
79072805 | 6240 | } |
11343788 | 6241 | return o; |
79072805 LW |
6242 | } |
6243 | ||
6244 | OP * | |
cea2e8a9 | 6245 | Perl_ck_eval(pTHX_ OP *o) |
79072805 | 6246 | { |
27da23d5 | 6247 | dVAR; |
3280af22 | 6248 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 6249 | if (o->op_flags & OPf_KIDS) { |
46c461b5 | 6250 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
79072805 | 6251 | |
93a17b20 | 6252 | if (!kid) { |
11343788 | 6253 | o->op_flags &= ~OPf_KIDS; |
93c66552 | 6254 | op_null(o); |
79072805 | 6255 | } |
b14574b4 | 6256 | else if (kid->op_type == OP_LINESEQ || kid->op_type == OP_STUB) { |
79072805 | 6257 | LOGOP *enter; |
eb8433b7 | 6258 | #ifdef PERL_MAD |
1d866c12 | 6259 | OP* const oldo = o; |
eb8433b7 | 6260 | #endif |
79072805 | 6261 | |
11343788 | 6262 | cUNOPo->op_first = 0; |
eb8433b7 | 6263 | #ifndef PERL_MAD |
11343788 | 6264 | op_free(o); |
eb8433b7 | 6265 | #endif |
79072805 | 6266 | |
b7dc083c | 6267 | NewOp(1101, enter, 1, LOGOP); |
79072805 | 6268 | enter->op_type = OP_ENTERTRY; |
22c35a8c | 6269 | enter->op_ppaddr = PL_ppaddr[OP_ENTERTRY]; |
79072805 LW |
6270 | enter->op_private = 0; |
6271 | ||
6272 | /* establish postfix order */ | |
6273 | enter->op_next = (OP*)enter; | |
6274 | ||
11343788 MB |
6275 | o = prepend_elem(OP_LINESEQ, (OP*)enter, (OP*)kid); |
6276 | o->op_type = OP_LEAVETRY; | |
22c35a8c | 6277 | o->op_ppaddr = PL_ppaddr[OP_LEAVETRY]; |
11343788 | 6278 | enter->op_other = o; |
eb8433b7 | 6279 | op_getmad(oldo,o,'O'); |
11343788 | 6280 | return o; |
79072805 | 6281 | } |
b5c19bd7 | 6282 | else { |
473986ff | 6283 | scalar((OP*)kid); |
b5c19bd7 DM |
6284 | PL_cv_has_eval = 1; |
6285 | } | |
79072805 LW |
6286 | } |
6287 | else { | |
eb8433b7 | 6288 | #ifdef PERL_MAD |
1d866c12 | 6289 | OP* const oldo = o; |
eb8433b7 | 6290 | #else |
11343788 | 6291 | op_free(o); |
eb8433b7 | 6292 | #endif |
54b9620d | 6293 | o = newUNOP(OP_ENTEREVAL, 0, newDEFSVOP()); |
eb8433b7 | 6294 | op_getmad(oldo,o,'O'); |
79072805 | 6295 | } |
3280af22 | 6296 | o->op_targ = (PADOFFSET)PL_hints; |
7168684c | 6297 | if ((PL_hints & HINT_LOCALIZE_HH) != 0 && GvHV(PL_hintgv)) { |
0282be92 RGS |
6298 | /* Store a copy of %^H that pp_entereval can pick up. |
6299 | OPf_SPECIAL flags the opcode as being for this purpose, | |
6300 | so that it in turn will return a copy at every | |
6301 | eval.*/ | |
6302 | OP *hhop = newSVOP(OP_CONST, OPf_SPECIAL, | |
5b9c0671 | 6303 | (SV*)Perl_hv_copy_hints_hv(aTHX_ GvHV(PL_hintgv))); |
0d863452 RH |
6304 | cUNOPo->op_first->op_sibling = hhop; |
6305 | o->op_private |= OPpEVAL_HAS_HH; | |
6306 | } | |
11343788 | 6307 | return o; |
79072805 LW |
6308 | } |
6309 | ||
6310 | OP * | |
d98f61e7 GS |
6311 | Perl_ck_exit(pTHX_ OP *o) |
6312 | { | |
6313 | #ifdef VMS | |
551405c4 | 6314 | HV * const table = GvHV(PL_hintgv); |
d98f61e7 | 6315 | if (table) { |
a4fc7abc | 6316 | SV * const * const svp = hv_fetchs(table, "vmsish_exit", FALSE); |
d98f61e7 GS |
6317 | if (svp && *svp && SvTRUE(*svp)) |
6318 | o->op_private |= OPpEXIT_VMSISH; | |
6319 | } | |
96e176bf | 6320 | if (VMSISH_HUSHED) o->op_private |= OPpHUSH_VMSISH; |
d98f61e7 GS |
6321 | #endif |
6322 | return ck_fun(o); | |
6323 | } | |
6324 | ||
6325 | OP * | |
cea2e8a9 | 6326 | Perl_ck_exec(pTHX_ OP *o) |
79072805 | 6327 | { |
11343788 | 6328 | if (o->op_flags & OPf_STACKED) { |
6867be6d | 6329 | OP *kid; |
11343788 MB |
6330 | o = ck_fun(o); |
6331 | kid = cUNOPo->op_first->op_sibling; | |
8990e307 | 6332 | if (kid->op_type == OP_RV2GV) |
93c66552 | 6333 | op_null(kid); |
79072805 | 6334 | } |
463ee0b2 | 6335 | else |
11343788 MB |
6336 | o = listkids(o); |
6337 | return o; | |
79072805 LW |
6338 | } |
6339 | ||
6340 | OP * | |
cea2e8a9 | 6341 | Perl_ck_exists(pTHX_ OP *o) |
5f05dabc | 6342 | { |
97aff369 | 6343 | dVAR; |
5196be3e MB |
6344 | o = ck_fun(o); |
6345 | if (o->op_flags & OPf_KIDS) { | |
46c461b5 | 6346 | OP * const kid = cUNOPo->op_first; |
afebc493 GS |
6347 | if (kid->op_type == OP_ENTERSUB) { |
6348 | (void) ref(kid, o->op_type); | |
13765c85 DM |
6349 | if (kid->op_type != OP_RV2CV |
6350 | && !(PL_parser && PL_parser->error_count)) | |
afebc493 | 6351 | Perl_croak(aTHX_ "%s argument is not a subroutine name", |
53e06cf0 | 6352 | OP_DESC(o)); |
afebc493 GS |
6353 | o->op_private |= OPpEXISTS_SUB; |
6354 | } | |
6355 | else if (kid->op_type == OP_AELEM) | |
01020589 GS |
6356 | o->op_flags |= OPf_SPECIAL; |
6357 | else if (kid->op_type != OP_HELEM) | |
6358 | Perl_croak(aTHX_ "%s argument is not a HASH or ARRAY element", | |
53e06cf0 | 6359 | OP_DESC(o)); |
93c66552 | 6360 | op_null(kid); |
5f05dabc | 6361 | } |
5196be3e | 6362 | return o; |
5f05dabc | 6363 | } |
6364 | ||
79072805 | 6365 | OP * |
cea2e8a9 | 6366 | Perl_ck_rvconst(pTHX_ register OP *o) |
79072805 | 6367 | { |
27da23d5 | 6368 | dVAR; |
0bd48802 | 6369 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
85e6fe83 | 6370 | |
3280af22 | 6371 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
e26df76a NC |
6372 | if (o->op_type == OP_RV2CV) |
6373 | o->op_private &= ~1; | |
6374 | ||
79072805 | 6375 | if (kid->op_type == OP_CONST) { |
44a8e56a | 6376 | int iscv; |
6377 | GV *gv; | |
504618e9 | 6378 | SV * const kidsv = kid->op_sv; |
44a8e56a | 6379 | |
779c5bc9 GS |
6380 | /* Is it a constant from cv_const_sv()? */ |
6381 | if (SvROK(kidsv) && SvREADONLY(kidsv)) { | |
0bd48802 | 6382 | SV * const rsv = SvRV(kidsv); |
42d0e0b7 | 6383 | const svtype type = SvTYPE(rsv); |
bd61b366 | 6384 | const char *badtype = NULL; |
779c5bc9 GS |
6385 | |
6386 | switch (o->op_type) { | |
6387 | case OP_RV2SV: | |
42d0e0b7 | 6388 | if (type > SVt_PVMG) |
779c5bc9 GS |
6389 | badtype = "a SCALAR"; |
6390 | break; | |
6391 | case OP_RV2AV: | |
42d0e0b7 | 6392 | if (type != SVt_PVAV) |
779c5bc9 GS |
6393 | badtype = "an ARRAY"; |
6394 | break; | |
6395 | case OP_RV2HV: | |
42d0e0b7 | 6396 | if (type != SVt_PVHV) |
779c5bc9 | 6397 | badtype = "a HASH"; |
779c5bc9 GS |
6398 | break; |
6399 | case OP_RV2CV: | |
42d0e0b7 | 6400 | if (type != SVt_PVCV) |
779c5bc9 GS |
6401 | badtype = "a CODE"; |
6402 | break; | |
6403 | } | |
6404 | if (badtype) | |
cea2e8a9 | 6405 | Perl_croak(aTHX_ "Constant is not %s reference", badtype); |
779c5bc9 GS |
6406 | return o; |
6407 | } | |
ce10b5d1 RGS |
6408 | else if ((o->op_type == OP_RV2HV || o->op_type == OP_RV2SV) && |
6409 | (PL_hints & HINT_STRICT_REFS) && SvPOK(kidsv)) { | |
6410 | /* If this is an access to a stash, disable "strict refs", because | |
6411 | * stashes aren't auto-vivified at compile-time (unless we store | |
6412 | * symbols in them), and we don't want to produce a run-time | |
6413 | * stricture error when auto-vivifying the stash. */ | |
6414 | const char *s = SvPV_nolen(kidsv); | |
6415 | const STRLEN l = SvCUR(kidsv); | |
6416 | if (l > 1 && s[l-1] == ':' && s[l-2] == ':') | |
6417 | o->op_private &= ~HINT_STRICT_REFS; | |
6418 | } | |
6419 | if ((o->op_private & HINT_STRICT_REFS) && (kid->op_private & OPpCONST_BARE)) { | |
5f66b61c | 6420 | const char *badthing; |
5dc0d613 | 6421 | switch (o->op_type) { |
44a8e56a | 6422 | case OP_RV2SV: |
6423 | badthing = "a SCALAR"; | |
6424 | break; | |
6425 | case OP_RV2AV: | |
6426 | badthing = "an ARRAY"; | |
6427 | break; | |
6428 | case OP_RV2HV: | |
6429 | badthing = "a HASH"; | |
6430 | break; | |
5f66b61c AL |
6431 | default: |
6432 | badthing = NULL; | |
6433 | break; | |
44a8e56a | 6434 | } |
6435 | if (badthing) | |
1c846c1f | 6436 | Perl_croak(aTHX_ |
95b63a38 | 6437 | "Can't use bareword (\"%"SVf"\") as %s ref while \"strict refs\" in use", |
be2597df | 6438 | SVfARG(kidsv), badthing); |
44a8e56a | 6439 | } |
93233ece CS |
6440 | /* |
6441 | * This is a little tricky. We only want to add the symbol if we | |
6442 | * didn't add it in the lexer. Otherwise we get duplicate strict | |
6443 | * warnings. But if we didn't add it in the lexer, we must at | |
6444 | * least pretend like we wanted to add it even if it existed before, | |
6445 | * or we get possible typo warnings. OPpCONST_ENTERED says | |
6446 | * whether the lexer already added THIS instance of this symbol. | |
6447 | */ | |
5196be3e | 6448 | iscv = (o->op_type == OP_RV2CV) * 2; |
93233ece | 6449 | do { |
7a5fd60d | 6450 | gv = gv_fetchsv(kidsv, |
748a9306 | 6451 | iscv | !(kid->op_private & OPpCONST_ENTERED), |
a0d0e21e LW |
6452 | iscv |
6453 | ? SVt_PVCV | |
11343788 | 6454 | : o->op_type == OP_RV2SV |
a0d0e21e | 6455 | ? SVt_PV |
11343788 | 6456 | : o->op_type == OP_RV2AV |
a0d0e21e | 6457 | ? SVt_PVAV |
11343788 | 6458 | : o->op_type == OP_RV2HV |
a0d0e21e LW |
6459 | ? SVt_PVHV |
6460 | : SVt_PVGV); | |
93233ece CS |
6461 | } while (!gv && !(kid->op_private & OPpCONST_ENTERED) && !iscv++); |
6462 | if (gv) { | |
6463 | kid->op_type = OP_GV; | |
6464 | SvREFCNT_dec(kid->op_sv); | |
350de78d | 6465 | #ifdef USE_ITHREADS |
638eceb6 | 6466 | /* XXX hack: dependence on sizeof(PADOP) <= sizeof(SVOP) */ |
350de78d | 6467 | kPADOP->op_padix = pad_alloc(OP_GV, SVs_PADTMP); |
dd2155a4 | 6468 | SvREFCNT_dec(PAD_SVl(kPADOP->op_padix)); |
743e66e6 | 6469 | GvIN_PAD_on(gv); |
b37c2d43 | 6470 | PAD_SETSV(kPADOP->op_padix, (SV*) SvREFCNT_inc_simple_NN(gv)); |
350de78d | 6471 | #else |
b37c2d43 | 6472 | kid->op_sv = SvREFCNT_inc_simple_NN(gv); |
350de78d | 6473 | #endif |
23f1ca44 | 6474 | kid->op_private = 0; |
76cd736e | 6475 | kid->op_ppaddr = PL_ppaddr[OP_GV]; |
a0d0e21e | 6476 | } |
79072805 | 6477 | } |
11343788 | 6478 | return o; |
79072805 LW |
6479 | } |
6480 | ||
6481 | OP * | |
cea2e8a9 | 6482 | Perl_ck_ftst(pTHX_ OP *o) |
79072805 | 6483 | { |
27da23d5 | 6484 | dVAR; |
6867be6d | 6485 | const I32 type = o->op_type; |
79072805 | 6486 | |
d0dca557 | 6487 | if (o->op_flags & OPf_REF) { |
6f207bd3 | 6488 | NOOP; |
d0dca557 JD |
6489 | } |
6490 | else if (o->op_flags & OPf_KIDS && cUNOPo->op_first->op_type != OP_STUB) { | |
551405c4 | 6491 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
1496a290 | 6492 | const OPCODE kidtype = kid->op_type; |
79072805 | 6493 | |
1496a290 | 6494 | if (kidtype == OP_CONST && (kid->op_private & OPpCONST_BARE)) { |
551405c4 | 6495 | OP * const newop = newGVOP(type, OPf_REF, |
f776e3cd | 6496 | gv_fetchsv(kid->op_sv, GV_ADD, SVt_PVIO)); |
eb8433b7 NC |
6497 | #ifdef PERL_MAD |
6498 | op_getmad(o,newop,'O'); | |
6499 | #else | |
11343788 | 6500 | op_free(o); |
eb8433b7 | 6501 | #endif |
1d866c12 | 6502 | return newop; |
79072805 | 6503 | } |
1d866c12 | 6504 | if ((PL_hints & HINT_FILETEST_ACCESS) && OP_IS_FILETEST_ACCESS(o)) |
1af34c76 | 6505 | o->op_private |= OPpFT_ACCESS; |
1496a290 AL |
6506 | if (PL_check[kidtype] == MEMBER_TO_FPTR(Perl_ck_ftst) |
6507 | && kidtype != OP_STAT && kidtype != OP_LSTAT) | |
fbb0b3b3 | 6508 | o->op_private |= OPpFT_STACKED; |
79072805 LW |
6509 | } |
6510 | else { | |
eb8433b7 | 6511 | #ifdef PERL_MAD |
1d866c12 | 6512 | OP* const oldo = o; |
eb8433b7 | 6513 | #else |
11343788 | 6514 | op_free(o); |
eb8433b7 | 6515 | #endif |
79072805 | 6516 | if (type == OP_FTTTY) |
8fde6460 | 6517 | o = newGVOP(type, OPf_REF, PL_stdingv); |
79072805 | 6518 | else |
d0dca557 | 6519 | o = newUNOP(type, 0, newDEFSVOP()); |
eb8433b7 | 6520 | op_getmad(oldo,o,'O'); |
79072805 | 6521 | } |
11343788 | 6522 | return o; |
79072805 LW |
6523 | } |
6524 | ||
6525 | OP * | |
cea2e8a9 | 6526 | Perl_ck_fun(pTHX_ OP *o) |
79072805 | 6527 | { |
97aff369 | 6528 | dVAR; |
6867be6d | 6529 | const int type = o->op_type; |
22c35a8c | 6530 | register I32 oa = PL_opargs[type] >> OASHIFT; |
aeea060c | 6531 | |
11343788 | 6532 | if (o->op_flags & OPf_STACKED) { |
79072805 LW |
6533 | if ((oa & OA_OPTIONAL) && (oa >> 4) && !((oa >> 4) & OA_OPTIONAL)) |
6534 | oa &= ~OA_OPTIONAL; | |
6535 | else | |
11343788 | 6536 | return no_fh_allowed(o); |
79072805 LW |
6537 | } |
6538 | ||
11343788 | 6539 | if (o->op_flags & OPf_KIDS) { |
6867be6d AL |
6540 | OP **tokid = &cLISTOPo->op_first; |
6541 | register OP *kid = cLISTOPo->op_first; | |
6542 | OP *sibl; | |
6543 | I32 numargs = 0; | |
6544 | ||
8990e307 | 6545 | if (kid->op_type == OP_PUSHMARK || |
155aba94 | 6546 | (kid->op_type == OP_NULL && kid->op_targ == OP_PUSHMARK)) |
8990e307 | 6547 | { |
79072805 LW |
6548 | tokid = &kid->op_sibling; |
6549 | kid = kid->op_sibling; | |
6550 | } | |
22c35a8c | 6551 | if (!kid && PL_opargs[type] & OA_DEFGV) |
54b9620d | 6552 | *tokid = kid = newDEFSVOP(); |
79072805 LW |
6553 | |
6554 | while (oa && kid) { | |
6555 | numargs++; | |
6556 | sibl = kid->op_sibling; | |
eb8433b7 NC |
6557 | #ifdef PERL_MAD |
6558 | if (!sibl && kid->op_type == OP_STUB) { | |
6559 | numargs--; | |
6560 | break; | |
6561 | } | |
6562 | #endif | |
79072805 LW |
6563 | switch (oa & 7) { |
6564 | case OA_SCALAR: | |
62c18ce2 GS |
6565 | /* list seen where single (scalar) arg expected? */ |
6566 | if (numargs == 1 && !(oa >> 4) | |
6567 | && kid->op_type == OP_LIST && type != OP_SCALAR) | |
6568 | { | |
6569 | return too_many_arguments(o,PL_op_desc[type]); | |
6570 | } | |
79072805 LW |
6571 | scalar(kid); |
6572 | break; | |
6573 | case OA_LIST: | |
6574 | if (oa < 16) { | |
6575 | kid = 0; | |
6576 | continue; | |
6577 | } | |
6578 | else | |
6579 | list(kid); | |
6580 | break; | |
6581 | case OA_AVREF: | |
936edb8b | 6582 | if ((type == OP_PUSH || type == OP_UNSHIFT) |
f87c3213 | 6583 | && !kid->op_sibling && ckWARN(WARN_SYNTAX)) |
9014280d | 6584 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
de4864e4 | 6585 | "Useless use of %s with no values", |
936edb8b | 6586 | PL_op_desc[type]); |
b2ffa427 | 6587 | |
79072805 | 6588 | if (kid->op_type == OP_CONST && |
62c18ce2 GS |
6589 | (kid->op_private & OPpCONST_BARE)) |
6590 | { | |
551405c4 | 6591 | OP * const newop = newAVREF(newGVOP(OP_GV, 0, |
f776e3cd | 6592 | gv_fetchsv(((SVOP*)kid)->op_sv, GV_ADD, SVt_PVAV) )); |
12bcd1a6 PM |
6593 | if (ckWARN2(WARN_DEPRECATED, WARN_SYNTAX)) |
6594 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), | |
7a5fd60d | 6595 | "Array @%"SVf" missing the @ in argument %"IVdf" of %s()", |
be2597df | 6596 | SVfARG(((SVOP*)kid)->op_sv), (IV)numargs, PL_op_desc[type]); |
eb8433b7 NC |
6597 | #ifdef PERL_MAD |
6598 | op_getmad(kid,newop,'K'); | |
6599 | #else | |
79072805 | 6600 | op_free(kid); |
eb8433b7 | 6601 | #endif |
79072805 LW |
6602 | kid = newop; |
6603 | kid->op_sibling = sibl; | |
6604 | *tokid = kid; | |
6605 | } | |
8990e307 | 6606 | else if (kid->op_type != OP_RV2AV && kid->op_type != OP_PADAV) |
35cd451c | 6607 | bad_type(numargs, "array", PL_op_desc[type], kid); |
a0d0e21e | 6608 | mod(kid, type); |
79072805 LW |
6609 | break; |
6610 | case OA_HVREF: | |
6611 | if (kid->op_type == OP_CONST && | |
62c18ce2 GS |
6612 | (kid->op_private & OPpCONST_BARE)) |
6613 | { | |
551405c4 | 6614 | OP * const newop = newHVREF(newGVOP(OP_GV, 0, |
f776e3cd | 6615 | gv_fetchsv(((SVOP*)kid)->op_sv, GV_ADD, SVt_PVHV) )); |
12bcd1a6 PM |
6616 | if (ckWARN2(WARN_DEPRECATED, WARN_SYNTAX)) |
6617 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), | |
7a5fd60d | 6618 | "Hash %%%"SVf" missing the %% in argument %"IVdf" of %s()", |
be2597df | 6619 | SVfARG(((SVOP*)kid)->op_sv), (IV)numargs, PL_op_desc[type]); |
eb8433b7 NC |
6620 | #ifdef PERL_MAD |
6621 | op_getmad(kid,newop,'K'); | |
6622 | #else | |
79072805 | 6623 | op_free(kid); |
eb8433b7 | 6624 | #endif |
79072805 LW |
6625 | kid = newop; |
6626 | kid->op_sibling = sibl; | |
6627 | *tokid = kid; | |
6628 | } | |
8990e307 | 6629 | else if (kid->op_type != OP_RV2HV && kid->op_type != OP_PADHV) |
35cd451c | 6630 | bad_type(numargs, "hash", PL_op_desc[type], kid); |
a0d0e21e | 6631 | mod(kid, type); |
79072805 LW |
6632 | break; |
6633 | case OA_CVREF: | |
6634 | { | |
551405c4 | 6635 | OP * const newop = newUNOP(OP_NULL, 0, kid); |
79072805 LW |
6636 | kid->op_sibling = 0; |
6637 | linklist(kid); | |
6638 | newop->op_next = newop; | |
6639 | kid = newop; | |
6640 | kid->op_sibling = sibl; | |
6641 | *tokid = kid; | |
6642 | } | |
6643 | break; | |
6644 | case OA_FILEREF: | |
c340be78 | 6645 | if (kid->op_type != OP_GV && kid->op_type != OP_RV2GV) { |
79072805 | 6646 | if (kid->op_type == OP_CONST && |
62c18ce2 GS |
6647 | (kid->op_private & OPpCONST_BARE)) |
6648 | { | |
0bd48802 | 6649 | OP * const newop = newGVOP(OP_GV, 0, |
f776e3cd | 6650 | gv_fetchsv(((SVOP*)kid)->op_sv, GV_ADD, SVt_PVIO)); |
afbdacea | 6651 | if (!(o->op_private & 1) && /* if not unop */ |
8a996ce8 | 6652 | kid == cLISTOPo->op_last) |
364daeac | 6653 | cLISTOPo->op_last = newop; |
eb8433b7 NC |
6654 | #ifdef PERL_MAD |
6655 | op_getmad(kid,newop,'K'); | |
6656 | #else | |
79072805 | 6657 | op_free(kid); |
eb8433b7 | 6658 | #endif |
79072805 LW |
6659 | kid = newop; |
6660 | } | |
1ea32a52 GS |
6661 | else if (kid->op_type == OP_READLINE) { |
6662 | /* neophyte patrol: open(<FH>), close(<FH>) etc. */ | |
53e06cf0 | 6663 | bad_type(numargs, "HANDLE", OP_DESC(o), kid); |
1ea32a52 | 6664 | } |
79072805 | 6665 | else { |
35cd451c | 6666 | I32 flags = OPf_SPECIAL; |
a6c40364 | 6667 | I32 priv = 0; |
2c8ac474 GS |
6668 | PADOFFSET targ = 0; |
6669 | ||
35cd451c | 6670 | /* is this op a FH constructor? */ |
853846ea | 6671 | if (is_handle_constructor(o,numargs)) { |
bd61b366 | 6672 | const char *name = NULL; |
dd2155a4 | 6673 | STRLEN len = 0; |
2c8ac474 GS |
6674 | |
6675 | flags = 0; | |
6676 | /* Set a flag to tell rv2gv to vivify | |
853846ea NIS |
6677 | * need to "prove" flag does not mean something |
6678 | * else already - NI-S 1999/05/07 | |
2c8ac474 GS |
6679 | */ |
6680 | priv = OPpDEREF; | |
6681 | if (kid->op_type == OP_PADSV) { | |
f8503592 NC |
6682 | SV *const namesv |
6683 | = PAD_COMPNAME_SV(kid->op_targ); | |
6684 | name = SvPV_const(namesv, len); | |
2c8ac474 GS |
6685 | } |
6686 | else if (kid->op_type == OP_RV2SV | |
6687 | && kUNOP->op_first->op_type == OP_GV) | |
6688 | { | |
0bd48802 | 6689 | GV * const gv = cGVOPx_gv(kUNOP->op_first); |
2c8ac474 GS |
6690 | name = GvNAME(gv); |
6691 | len = GvNAMELEN(gv); | |
6692 | } | |
afd1915d GS |
6693 | else if (kid->op_type == OP_AELEM |
6694 | || kid->op_type == OP_HELEM) | |
6695 | { | |
735fec84 | 6696 | OP *firstop; |
551405c4 | 6697 | OP *op = ((BINOP*)kid)->op_first; |
a4fc7abc | 6698 | name = NULL; |
551405c4 | 6699 | if (op) { |
a0714e2c | 6700 | SV *tmpstr = NULL; |
551405c4 | 6701 | const char * const a = |
666ea192 JH |
6702 | kid->op_type == OP_AELEM ? |
6703 | "[]" : "{}"; | |
0c4b0a3f JH |
6704 | if (((op->op_type == OP_RV2AV) || |
6705 | (op->op_type == OP_RV2HV)) && | |
735fec84 RGS |
6706 | (firstop = ((UNOP*)op)->op_first) && |
6707 | (firstop->op_type == OP_GV)) { | |
0c4b0a3f | 6708 | /* packagevar $a[] or $h{} */ |
735fec84 | 6709 | GV * const gv = cGVOPx_gv(firstop); |
0c4b0a3f JH |
6710 | if (gv) |
6711 | tmpstr = | |
6712 | Perl_newSVpvf(aTHX_ | |
6713 | "%s%c...%c", | |
6714 | GvNAME(gv), | |
6715 | a[0], a[1]); | |
6716 | } | |
6717 | else if (op->op_type == OP_PADAV | |
6718 | || op->op_type == OP_PADHV) { | |
6719 | /* lexicalvar $a[] or $h{} */ | |
551405c4 | 6720 | const char * const padname = |
0c4b0a3f JH |
6721 | PAD_COMPNAME_PV(op->op_targ); |
6722 | if (padname) | |
6723 | tmpstr = | |
6724 | Perl_newSVpvf(aTHX_ | |
6725 | "%s%c...%c", | |
6726 | padname + 1, | |
6727 | a[0], a[1]); | |
0c4b0a3f JH |
6728 | } |
6729 | if (tmpstr) { | |
93524f2b | 6730 | name = SvPV_const(tmpstr, len); |
0c4b0a3f JH |
6731 | sv_2mortal(tmpstr); |
6732 | } | |
6733 | } | |
6734 | if (!name) { | |
6735 | name = "__ANONIO__"; | |
6736 | len = 10; | |
6737 | } | |
6738 | mod(kid, type); | |
afd1915d | 6739 | } |
2c8ac474 GS |
6740 | if (name) { |
6741 | SV *namesv; | |
6742 | targ = pad_alloc(OP_RV2GV, SVs_PADTMP); | |
dd2155a4 | 6743 | namesv = PAD_SVl(targ); |
862a34c6 | 6744 | SvUPGRADE(namesv, SVt_PV); |
2c8ac474 GS |
6745 | if (*name != '$') |
6746 | sv_setpvn(namesv, "$", 1); | |
6747 | sv_catpvn(namesv, name, len); | |
6748 | } | |
853846ea | 6749 | } |
79072805 | 6750 | kid->op_sibling = 0; |
35cd451c | 6751 | kid = newUNOP(OP_RV2GV, flags, scalar(kid)); |
2c8ac474 GS |
6752 | kid->op_targ = targ; |
6753 | kid->op_private |= priv; | |
79072805 LW |
6754 | } |
6755 | kid->op_sibling = sibl; | |
6756 | *tokid = kid; | |
6757 | } | |
6758 | scalar(kid); | |
6759 | break; | |
6760 | case OA_SCALARREF: | |
a0d0e21e | 6761 | mod(scalar(kid), type); |
79072805 LW |
6762 | break; |
6763 | } | |
6764 | oa >>= 4; | |
6765 | tokid = &kid->op_sibling; | |
6766 | kid = kid->op_sibling; | |
6767 | } | |
eb8433b7 NC |
6768 | #ifdef PERL_MAD |
6769 | if (kid && kid->op_type != OP_STUB) | |
6770 | return too_many_arguments(o,OP_DESC(o)); | |
6771 | o->op_private |= numargs; | |
6772 | #else | |
6773 | /* FIXME - should the numargs move as for the PERL_MAD case? */ | |
11343788 | 6774 | o->op_private |= numargs; |
79072805 | 6775 | if (kid) |
53e06cf0 | 6776 | return too_many_arguments(o,OP_DESC(o)); |
eb8433b7 | 6777 | #endif |
11343788 | 6778 | listkids(o); |
79072805 | 6779 | } |
22c35a8c | 6780 | else if (PL_opargs[type] & OA_DEFGV) { |
c56915e3 | 6781 | #ifdef PERL_MAD |
c7fe699d | 6782 | OP *newop = newUNOP(type, 0, newDEFSVOP()); |
c56915e3 | 6783 | op_getmad(o,newop,'O'); |
c7fe699d | 6784 | return newop; |
c56915e3 | 6785 | #else |
c7fe699d | 6786 | /* Ordering of these two is important to keep f_map.t passing. */ |
11343788 | 6787 | op_free(o); |
c7fe699d | 6788 | return newUNOP(type, 0, newDEFSVOP()); |
c56915e3 | 6789 | #endif |
a0d0e21e LW |
6790 | } |
6791 | ||
79072805 LW |
6792 | if (oa) { |
6793 | while (oa & OA_OPTIONAL) | |
6794 | oa >>= 4; | |
6795 | if (oa && oa != OA_LIST) | |
53e06cf0 | 6796 | return too_few_arguments(o,OP_DESC(o)); |
79072805 | 6797 | } |
11343788 | 6798 | return o; |
79072805 LW |
6799 | } |
6800 | ||
6801 | OP * | |
cea2e8a9 | 6802 | Perl_ck_glob(pTHX_ OP *o) |
79072805 | 6803 | { |
27da23d5 | 6804 | dVAR; |
fb73857a | 6805 | GV *gv; |
6806 | ||
649da076 | 6807 | o = ck_fun(o); |
1f2bfc8a | 6808 | if ((o->op_flags & OPf_KIDS) && !cLISTOPo->op_first->op_sibling) |
54b9620d | 6809 | append_elem(OP_GLOB, o, newDEFSVOP()); |
fb73857a | 6810 | |
fafc274c | 6811 | if (!((gv = gv_fetchpvs("glob", GV_NOTQUAL, SVt_PVCV)) |
b9f751c0 GS |
6812 | && GvCVu(gv) && GvIMPORTED_CV(gv))) |
6813 | { | |
5c1737d1 | 6814 | gv = gv_fetchpvs("CORE::GLOBAL::glob", 0, SVt_PVCV); |
b9f751c0 | 6815 | } |
b1cb66bf | 6816 | |
52bb0670 | 6817 | #if !defined(PERL_EXTERNAL_GLOB) |
72b16652 | 6818 | /* XXX this can be tightened up and made more failsafe. */ |
f444d496 | 6819 | if (!(gv && GvCVu(gv) && GvIMPORTED_CV(gv))) { |
7d3fb230 | 6820 | GV *glob_gv; |
72b16652 | 6821 | ENTER; |
00ca71c1 | 6822 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, |
a0714e2c | 6823 | newSVpvs("File::Glob"), NULL, NULL, NULL); |
5c1737d1 NC |
6824 | gv = gv_fetchpvs("CORE::GLOBAL::glob", 0, SVt_PVCV); |
6825 | glob_gv = gv_fetchpvs("File::Glob::csh_glob", 0, SVt_PVCV); | |
7d3fb230 | 6826 | GvCV(gv) = GvCV(glob_gv); |
b37c2d43 | 6827 | SvREFCNT_inc_void((SV*)GvCV(gv)); |
7d3fb230 | 6828 | GvIMPORTED_CV_on(gv); |
72b16652 GS |
6829 | LEAVE; |
6830 | } | |
52bb0670 | 6831 | #endif /* PERL_EXTERNAL_GLOB */ |
72b16652 | 6832 | |
b9f751c0 | 6833 | if (gv && GvCVu(gv) && GvIMPORTED_CV(gv)) { |
5196be3e | 6834 | append_elem(OP_GLOB, o, |
80252599 | 6835 | newSVOP(OP_CONST, 0, newSViv(PL_glob_index++))); |
1f2bfc8a | 6836 | o->op_type = OP_LIST; |
22c35a8c | 6837 | o->op_ppaddr = PL_ppaddr[OP_LIST]; |
1f2bfc8a | 6838 | cLISTOPo->op_first->op_type = OP_PUSHMARK; |
22c35a8c | 6839 | cLISTOPo->op_first->op_ppaddr = PL_ppaddr[OP_PUSHMARK]; |
ad33f57d | 6840 | cLISTOPo->op_first->op_targ = 0; |
1f2bfc8a | 6841 | o = newUNOP(OP_ENTERSUB, OPf_STACKED, |
aeea060c | 6842 | append_elem(OP_LIST, o, |
1f2bfc8a MB |
6843 | scalar(newUNOP(OP_RV2CV, 0, |
6844 | newGVOP(OP_GV, 0, gv))))); | |
d58bf5aa MB |
6845 | o = newUNOP(OP_NULL, 0, ck_subr(o)); |
6846 | o->op_targ = OP_GLOB; /* hint at what it used to be */ | |
6847 | return o; | |
b1cb66bf | 6848 | } |
6849 | gv = newGVgen("main"); | |
a0d0e21e | 6850 | gv_IOadd(gv); |
11343788 MB |
6851 | append_elem(OP_GLOB, o, newGVOP(OP_GV, 0, gv)); |
6852 | scalarkids(o); | |
649da076 | 6853 | return o; |
79072805 LW |
6854 | } |
6855 | ||
6856 | OP * | |
cea2e8a9 | 6857 | Perl_ck_grep(pTHX_ OP *o) |
79072805 | 6858 | { |
27da23d5 | 6859 | dVAR; |
03ca120d | 6860 | LOGOP *gwop = NULL; |
79072805 | 6861 | OP *kid; |
6867be6d | 6862 | const OPCODE type = o->op_type == OP_GREPSTART ? OP_GREPWHILE : OP_MAPWHILE; |
9f7d9405 | 6863 | PADOFFSET offset; |
79072805 | 6864 | |
22c35a8c | 6865 | o->op_ppaddr = PL_ppaddr[OP_GREPSTART]; |
13765c85 | 6866 | /* don't allocate gwop here, as we may leak it if PL_parser->error_count > 0 */ |
aeea060c | 6867 | |
11343788 | 6868 | if (o->op_flags & OPf_STACKED) { |
a0d0e21e | 6869 | OP* k; |
11343788 MB |
6870 | o = ck_sort(o); |
6871 | kid = cLISTOPo->op_first->op_sibling; | |
d09ad856 BS |
6872 | if (!cUNOPx(kid)->op_next) |
6873 | Perl_croak(aTHX_ "panic: ck_grep"); | |
e3c9a8b9 | 6874 | for (k = cUNOPx(kid)->op_first; k; k = k->op_next) { |
a0d0e21e LW |
6875 | kid = k; |
6876 | } | |
03ca120d | 6877 | NewOp(1101, gwop, 1, LOGOP); |
a0d0e21e | 6878 | kid->op_next = (OP*)gwop; |
11343788 | 6879 | o->op_flags &= ~OPf_STACKED; |
93a17b20 | 6880 | } |
11343788 | 6881 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e LW |
6882 | if (type == OP_MAPWHILE) |
6883 | list(kid); | |
6884 | else | |
6885 | scalar(kid); | |
11343788 | 6886 | o = ck_fun(o); |
13765c85 | 6887 | if (PL_parser && PL_parser->error_count) |
11343788 | 6888 | return o; |
aeea060c | 6889 | kid = cLISTOPo->op_first->op_sibling; |
79072805 | 6890 | if (kid->op_type != OP_NULL) |
cea2e8a9 | 6891 | Perl_croak(aTHX_ "panic: ck_grep"); |
79072805 LW |
6892 | kid = kUNOP->op_first; |
6893 | ||
03ca120d MHM |
6894 | if (!gwop) |
6895 | NewOp(1101, gwop, 1, LOGOP); | |
a0d0e21e | 6896 | gwop->op_type = type; |
22c35a8c | 6897 | gwop->op_ppaddr = PL_ppaddr[type]; |
11343788 | 6898 | gwop->op_first = listkids(o); |
79072805 | 6899 | gwop->op_flags |= OPf_KIDS; |
79072805 | 6900 | gwop->op_other = LINKLIST(kid); |
79072805 | 6901 | kid->op_next = (OP*)gwop; |
59f00321 | 6902 | offset = pad_findmy("$_"); |
00b1698f | 6903 | if (offset == NOT_IN_PAD || PAD_COMPNAME_FLAGS_isOUR(offset)) { |
59f00321 RGS |
6904 | o->op_private = gwop->op_private = 0; |
6905 | gwop->op_targ = pad_alloc(type, SVs_PADTMP); | |
6906 | } | |
6907 | else { | |
6908 | o->op_private = gwop->op_private = OPpGREP_LEX; | |
6909 | gwop->op_targ = o->op_targ = offset; | |
6910 | } | |
79072805 | 6911 | |
11343788 | 6912 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e | 6913 | if (!kid || !kid->op_sibling) |
53e06cf0 | 6914 | return too_few_arguments(o,OP_DESC(o)); |
a0d0e21e LW |
6915 | for (kid = kid->op_sibling; kid; kid = kid->op_sibling) |
6916 | mod(kid, OP_GREPSTART); | |
6917 | ||
79072805 LW |
6918 | return (OP*)gwop; |
6919 | } | |
6920 | ||
6921 | OP * | |
cea2e8a9 | 6922 | Perl_ck_index(pTHX_ OP *o) |
79072805 | 6923 | { |
11343788 MB |
6924 | if (o->op_flags & OPf_KIDS) { |
6925 | OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
0b71040e LW |
6926 | if (kid) |
6927 | kid = kid->op_sibling; /* get past "big" */ | |
79072805 | 6928 | if (kid && kid->op_type == OP_CONST) |
2779dcf1 | 6929 | fbm_compile(((SVOP*)kid)->op_sv, 0); |
79072805 | 6930 | } |
11343788 | 6931 | return ck_fun(o); |
79072805 LW |
6932 | } |
6933 | ||
6934 | OP * | |
cea2e8a9 | 6935 | Perl_ck_lengthconst(pTHX_ OP *o) |
79072805 LW |
6936 | { |
6937 | /* XXX length optimization goes here */ | |
11343788 | 6938 | return ck_fun(o); |
79072805 LW |
6939 | } |
6940 | ||
6941 | OP * | |
cea2e8a9 | 6942 | Perl_ck_lfun(pTHX_ OP *o) |
79072805 | 6943 | { |
6867be6d | 6944 | const OPCODE type = o->op_type; |
5dc0d613 | 6945 | return modkids(ck_fun(o), type); |
79072805 LW |
6946 | } |
6947 | ||
6948 | OP * | |
cea2e8a9 | 6949 | Perl_ck_defined(pTHX_ OP *o) /* 19990527 MJD */ |
69794302 | 6950 | { |
12bcd1a6 | 6951 | if ((o->op_flags & OPf_KIDS) && ckWARN2(WARN_DEPRECATED, WARN_SYNTAX)) { |
d0334bed GS |
6952 | switch (cUNOPo->op_first->op_type) { |
6953 | case OP_RV2AV: | |
a8739d98 JH |
6954 | /* This is needed for |
6955 | if (defined %stash::) | |
6956 | to work. Do not break Tk. | |
6957 | */ | |
1c846c1f | 6958 | break; /* Globals via GV can be undef */ |
d0334bed GS |
6959 | case OP_PADAV: |
6960 | case OP_AASSIGN: /* Is this a good idea? */ | |
12bcd1a6 | 6961 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
f10b0346 | 6962 | "defined(@array) is deprecated"); |
12bcd1a6 | 6963 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
cc507455 | 6964 | "\t(Maybe you should just omit the defined()?)\n"); |
69794302 | 6965 | break; |
d0334bed | 6966 | case OP_RV2HV: |
a8739d98 JH |
6967 | /* This is needed for |
6968 | if (defined %stash::) | |
6969 | to work. Do not break Tk. | |
6970 | */ | |
1c846c1f | 6971 | break; /* Globals via GV can be undef */ |
d0334bed | 6972 | case OP_PADHV: |
12bcd1a6 | 6973 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
894356b3 | 6974 | "defined(%%hash) is deprecated"); |
12bcd1a6 | 6975 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
cc507455 | 6976 | "\t(Maybe you should just omit the defined()?)\n"); |
d0334bed GS |
6977 | break; |
6978 | default: | |
6979 | /* no warning */ | |
6980 | break; | |
6981 | } | |
69794302 MJD |
6982 | } |
6983 | return ck_rfun(o); | |
6984 | } | |
6985 | ||
6986 | OP * | |
e4b7ebf3 RGS |
6987 | Perl_ck_readline(pTHX_ OP *o) |
6988 | { | |
6989 | if (!(o->op_flags & OPf_KIDS)) { | |
6990 | OP * const newop | |
6991 | = newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, PL_argvgv)); | |
6992 | #ifdef PERL_MAD | |
6993 | op_getmad(o,newop,'O'); | |
6994 | #else | |
6995 | op_free(o); | |
6996 | #endif | |
6997 | return newop; | |
6998 | } | |
6999 | return o; | |
7000 | } | |
7001 | ||
7002 | OP * | |
cea2e8a9 | 7003 | Perl_ck_rfun(pTHX_ OP *o) |
8990e307 | 7004 | { |
6867be6d | 7005 | const OPCODE type = o->op_type; |
5dc0d613 | 7006 | return refkids(ck_fun(o), type); |
8990e307 LW |
7007 | } |
7008 | ||
7009 | OP * | |
cea2e8a9 | 7010 | Perl_ck_listiob(pTHX_ OP *o) |
79072805 LW |
7011 | { |
7012 | register OP *kid; | |
aeea060c | 7013 | |
11343788 | 7014 | kid = cLISTOPo->op_first; |
79072805 | 7015 | if (!kid) { |
11343788 MB |
7016 | o = force_list(o); |
7017 | kid = cLISTOPo->op_first; | |
79072805 LW |
7018 | } |
7019 | if (kid->op_type == OP_PUSHMARK) | |
7020 | kid = kid->op_sibling; | |
11343788 | 7021 | if (kid && o->op_flags & OPf_STACKED) |
79072805 LW |
7022 | kid = kid->op_sibling; |
7023 | else if (kid && !kid->op_sibling) { /* print HANDLE; */ | |
7024 | if (kid->op_type == OP_CONST && kid->op_private & OPpCONST_BARE) { | |
11343788 | 7025 | o->op_flags |= OPf_STACKED; /* make it a filehandle */ |
748a9306 | 7026 | kid = newUNOP(OP_RV2GV, OPf_REF, scalar(kid)); |
11343788 MB |
7027 | cLISTOPo->op_first->op_sibling = kid; |
7028 | cLISTOPo->op_last = kid; | |
79072805 LW |
7029 | kid = kid->op_sibling; |
7030 | } | |
7031 | } | |
b2ffa427 | 7032 | |
79072805 | 7033 | if (!kid) |
54b9620d | 7034 | append_elem(o->op_type, o, newDEFSVOP()); |
79072805 | 7035 | |
2de3dbcc | 7036 | return listkids(o); |
bbce6d69 | 7037 | } |
7038 | ||
7039 | OP * | |
0d863452 RH |
7040 | Perl_ck_smartmatch(pTHX_ OP *o) |
7041 | { | |
97aff369 | 7042 | dVAR; |
0d863452 RH |
7043 | if (0 == (o->op_flags & OPf_SPECIAL)) { |
7044 | OP *first = cBINOPo->op_first; | |
7045 | OP *second = first->op_sibling; | |
7046 | ||
7047 | /* Implicitly take a reference to an array or hash */ | |
5f66b61c | 7048 | first->op_sibling = NULL; |
0d863452 RH |
7049 | first = cBINOPo->op_first = ref_array_or_hash(first); |
7050 | second = first->op_sibling = ref_array_or_hash(second); | |
7051 | ||
7052 | /* Implicitly take a reference to a regular expression */ | |
7053 | if (first->op_type == OP_MATCH) { | |
7054 | first->op_type = OP_QR; | |
7055 | first->op_ppaddr = PL_ppaddr[OP_QR]; | |
7056 | } | |
7057 | if (second->op_type == OP_MATCH) { | |
7058 | second->op_type = OP_QR; | |
7059 | second->op_ppaddr = PL_ppaddr[OP_QR]; | |
7060 | } | |
7061 | } | |
7062 | ||
7063 | return o; | |
7064 | } | |
7065 | ||
7066 | ||
7067 | OP * | |
b162f9ea IZ |
7068 | Perl_ck_sassign(pTHX_ OP *o) |
7069 | { | |
3088bf26 | 7070 | dVAR; |
1496a290 | 7071 | OP * const kid = cLISTOPo->op_first; |
b162f9ea IZ |
7072 | /* has a disposable target? */ |
7073 | if ((PL_opargs[kid->op_type] & OA_TARGLEX) | |
6b66af17 GS |
7074 | && !(kid->op_flags & OPf_STACKED) |
7075 | /* Cannot steal the second time! */ | |
1b438339 GG |
7076 | && !(kid->op_private & OPpTARGET_MY) |
7077 | /* Keep the full thing for madskills */ | |
7078 | && !PL_madskills | |
7079 | ) | |
b162f9ea | 7080 | { |
551405c4 | 7081 | OP * const kkid = kid->op_sibling; |
b162f9ea IZ |
7082 | |
7083 | /* Can just relocate the target. */ | |
2c2d71f5 JH |
7084 | if (kkid && kkid->op_type == OP_PADSV |
7085 | && !(kkid->op_private & OPpLVAL_INTRO)) | |
7086 | { | |
b162f9ea | 7087 | kid->op_targ = kkid->op_targ; |
743e66e6 | 7088 | kkid->op_targ = 0; |
b162f9ea IZ |
7089 | /* Now we do not need PADSV and SASSIGN. */ |
7090 | kid->op_sibling = o->op_sibling; /* NULL */ | |
7091 | cLISTOPo->op_first = NULL; | |
7092 | op_free(o); | |
7093 | op_free(kkid); | |
7094 | kid->op_private |= OPpTARGET_MY; /* Used for context settings */ | |
7095 | return kid; | |
7096 | } | |
7097 | } | |
c5917253 NC |
7098 | if (kid->op_sibling) { |
7099 | OP *kkid = kid->op_sibling; | |
7100 | if (kkid->op_type == OP_PADSV | |
7101 | && (kkid->op_private & OPpLVAL_INTRO) | |
7102 | && SvPAD_STATE(*av_fetch(PL_comppad_name, kkid->op_targ, FALSE))) { | |
7103 | const PADOFFSET target = kkid->op_targ; | |
7104 | OP *const other = newOP(OP_PADSV, | |
7105 | kkid->op_flags | |
7106 | | ((kkid->op_private & ~OPpLVAL_INTRO) << 8)); | |
7107 | OP *const first = newOP(OP_NULL, 0); | |
7108 | OP *const nullop = newCONDOP(0, first, o, other); | |
7109 | OP *const condop = first->op_next; | |
7110 | /* hijacking PADSTALE for uninitialized state variables */ | |
7111 | SvPADSTALE_on(PAD_SVl(target)); | |
7112 | ||
7113 | condop->op_type = OP_ONCE; | |
7114 | condop->op_ppaddr = PL_ppaddr[OP_ONCE]; | |
7115 | condop->op_targ = target; | |
7116 | other->op_targ = target; | |
7117 | ||
95562366 NC |
7118 | /* Because we change the type of the op here, we will skip the |
7119 | assinment binop->op_last = binop->op_first->op_sibling; at the | |
7120 | end of Perl_newBINOP(). So need to do it here. */ | |
7121 | cBINOPo->op_last = cBINOPo->op_first->op_sibling; | |
7122 | ||
c5917253 NC |
7123 | return nullop; |
7124 | } | |
7125 | } | |
b162f9ea IZ |
7126 | return o; |
7127 | } | |
7128 | ||
7129 | OP * | |
cea2e8a9 | 7130 | Perl_ck_match(pTHX_ OP *o) |
79072805 | 7131 | { |
97aff369 | 7132 | dVAR; |
0d863452 | 7133 | if (o->op_type != OP_QR && PL_compcv) { |
9f7d9405 | 7134 | const PADOFFSET offset = pad_findmy("$_"); |
00b1698f | 7135 | if (offset != NOT_IN_PAD && !(PAD_COMPNAME_FLAGS_isOUR(offset))) { |
59f00321 RGS |
7136 | o->op_targ = offset; |
7137 | o->op_private |= OPpTARGET_MY; | |
7138 | } | |
7139 | } | |
7140 | if (o->op_type == OP_MATCH || o->op_type == OP_QR) | |
7141 | o->op_private |= OPpRUNTIME; | |
11343788 | 7142 | return o; |
79072805 LW |
7143 | } |
7144 | ||
7145 | OP * | |
f5d5a27c CS |
7146 | Perl_ck_method(pTHX_ OP *o) |
7147 | { | |
551405c4 | 7148 | OP * const kid = cUNOPo->op_first; |
f5d5a27c CS |
7149 | if (kid->op_type == OP_CONST) { |
7150 | SV* sv = kSVOP->op_sv; | |
a4fc7abc AL |
7151 | const char * const method = SvPVX_const(sv); |
7152 | if (!(strchr(method, ':') || strchr(method, '\''))) { | |
f5d5a27c | 7153 | OP *cmop; |
1c846c1f | 7154 | if (!SvREADONLY(sv) || !SvFAKE(sv)) { |
a4fc7abc | 7155 | sv = newSVpvn_share(method, SvCUR(sv), 0); |
1c846c1f NIS |
7156 | } |
7157 | else { | |
a0714e2c | 7158 | kSVOP->op_sv = NULL; |
1c846c1f | 7159 | } |
f5d5a27c | 7160 | cmop = newSVOP(OP_METHOD_NAMED, 0, sv); |
eb8433b7 NC |
7161 | #ifdef PERL_MAD |
7162 | op_getmad(o,cmop,'O'); | |
7163 | #else | |
f5d5a27c | 7164 | op_free(o); |
eb8433b7 | 7165 | #endif |
f5d5a27c CS |
7166 | return cmop; |
7167 | } | |
7168 | } | |
7169 | return o; | |
7170 | } | |
7171 | ||
7172 | OP * | |
cea2e8a9 | 7173 | Perl_ck_null(pTHX_ OP *o) |
79072805 | 7174 | { |
96a5add6 | 7175 | PERL_UNUSED_CONTEXT; |
11343788 | 7176 | return o; |
79072805 LW |
7177 | } |
7178 | ||
7179 | OP * | |
16fe6d59 GS |
7180 | Perl_ck_open(pTHX_ OP *o) |
7181 | { | |
97aff369 | 7182 | dVAR; |
551405c4 | 7183 | HV * const table = GvHV(PL_hintgv); |
16fe6d59 | 7184 | if (table) { |
a4fc7abc | 7185 | SV **svp = hv_fetchs(table, "open_IN", FALSE); |
16fe6d59 | 7186 | if (svp && *svp) { |
551405c4 | 7187 | const I32 mode = mode_from_discipline(*svp); |
16fe6d59 GS |
7188 | if (mode & O_BINARY) |
7189 | o->op_private |= OPpOPEN_IN_RAW; | |
7190 | else if (mode & O_TEXT) | |
7191 | o->op_private |= OPpOPEN_IN_CRLF; | |
7192 | } | |
7193 | ||
a4fc7abc | 7194 | svp = hv_fetchs(table, "open_OUT", FALSE); |
16fe6d59 | 7195 | if (svp && *svp) { |
551405c4 | 7196 | const I32 mode = mode_from_discipline(*svp); |
16fe6d59 GS |
7197 | if (mode & O_BINARY) |
7198 | o->op_private |= OPpOPEN_OUT_RAW; | |
7199 | else if (mode & O_TEXT) | |
7200 | o->op_private |= OPpOPEN_OUT_CRLF; | |
7201 | } | |
7202 | } | |
8d7403e6 RGS |
7203 | if (o->op_type == OP_BACKTICK) { |
7204 | if (!(o->op_flags & OPf_KIDS)) { | |
e4b7ebf3 RGS |
7205 | OP * const newop = newUNOP(OP_BACKTICK, 0, newDEFSVOP()); |
7206 | #ifdef PERL_MAD | |
7207 | op_getmad(o,newop,'O'); | |
7208 | #else | |
8d7403e6 | 7209 | op_free(o); |
e4b7ebf3 RGS |
7210 | #endif |
7211 | return newop; | |
8d7403e6 | 7212 | } |
16fe6d59 | 7213 | return o; |
8d7403e6 | 7214 | } |
3b82e551 JH |
7215 | { |
7216 | /* In case of three-arg dup open remove strictness | |
7217 | * from the last arg if it is a bareword. */ | |
551405c4 AL |
7218 | OP * const first = cLISTOPx(o)->op_first; /* The pushmark. */ |
7219 | OP * const last = cLISTOPx(o)->op_last; /* The bareword. */ | |
3b82e551 | 7220 | OP *oa; |
b15aece3 | 7221 | const char *mode; |
3b82e551 JH |
7222 | |
7223 | if ((last->op_type == OP_CONST) && /* The bareword. */ | |
7224 | (last->op_private & OPpCONST_BARE) && | |
7225 | (last->op_private & OPpCONST_STRICT) && | |
7226 | (oa = first->op_sibling) && /* The fh. */ | |
7227 | (oa = oa->op_sibling) && /* The mode. */ | |
ea1d064a | 7228 | (oa->op_type == OP_CONST) && |
3b82e551 | 7229 | SvPOK(((SVOP*)oa)->op_sv) && |
b15aece3 | 7230 | (mode = SvPVX_const(((SVOP*)oa)->op_sv)) && |
3b82e551 JH |
7231 | mode[0] == '>' && mode[1] == '&' && /* A dup open. */ |
7232 | (last == oa->op_sibling)) /* The bareword. */ | |
7233 | last->op_private &= ~OPpCONST_STRICT; | |
7234 | } | |
16fe6d59 GS |
7235 | return ck_fun(o); |
7236 | } | |
7237 | ||
7238 | OP * | |
cea2e8a9 | 7239 | Perl_ck_repeat(pTHX_ OP *o) |
79072805 | 7240 | { |
11343788 MB |
7241 | if (cBINOPo->op_first->op_flags & OPf_PARENS) { |
7242 | o->op_private |= OPpREPEAT_DOLIST; | |
7243 | cBINOPo->op_first = force_list(cBINOPo->op_first); | |
79072805 LW |
7244 | } |
7245 | else | |
11343788 MB |
7246 | scalar(o); |
7247 | return o; | |
79072805 LW |
7248 | } |
7249 | ||
7250 | OP * | |
cea2e8a9 | 7251 | Perl_ck_require(pTHX_ OP *o) |
8990e307 | 7252 | { |
97aff369 | 7253 | dVAR; |
a0714e2c | 7254 | GV* gv = NULL; |
ec4ab249 | 7255 | |
11343788 | 7256 | if (o->op_flags & OPf_KIDS) { /* Shall we supply missing .pm? */ |
551405c4 | 7257 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
8990e307 LW |
7258 | |
7259 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
551405c4 | 7260 | SV * const sv = kid->op_sv; |
5c144d81 | 7261 | U32 was_readonly = SvREADONLY(sv); |
8990e307 | 7262 | char *s; |
cfff9797 NC |
7263 | STRLEN len; |
7264 | const char *end; | |
5c144d81 NC |
7265 | |
7266 | if (was_readonly) { | |
7267 | if (SvFAKE(sv)) { | |
7268 | sv_force_normal_flags(sv, 0); | |
7269 | assert(!SvREADONLY(sv)); | |
7270 | was_readonly = 0; | |
7271 | } else { | |
7272 | SvREADONLY_off(sv); | |
7273 | } | |
7274 | } | |
7275 | ||
cfff9797 NC |
7276 | s = SvPVX(sv); |
7277 | len = SvCUR(sv); | |
7278 | end = s + len; | |
7279 | for (; s < end; s++) { | |
a0d0e21e LW |
7280 | if (*s == ':' && s[1] == ':') { |
7281 | *s = '/'; | |
5c6b2528 | 7282 | Move(s+2, s+1, end - s - 1, char); |
cfff9797 | 7283 | --end; |
a0d0e21e | 7284 | } |
8990e307 | 7285 | } |
cfff9797 | 7286 | SvEND_set(sv, end); |
396482e1 | 7287 | sv_catpvs(sv, ".pm"); |
5c144d81 | 7288 | SvFLAGS(sv) |= was_readonly; |
8990e307 LW |
7289 | } |
7290 | } | |
ec4ab249 | 7291 | |
a72a1c8b RGS |
7292 | if (!(o->op_flags & OPf_SPECIAL)) { /* Wasn't written as CORE::require */ |
7293 | /* handle override, if any */ | |
fafc274c | 7294 | gv = gv_fetchpvs("require", GV_NOTQUAL, SVt_PVCV); |
d6a985f2 | 7295 | if (!(gv && GvCVu(gv) && GvIMPORTED_CV(gv))) { |
a4fc7abc | 7296 | GV * const * const gvp = (GV**)hv_fetchs(PL_globalstash, "require", FALSE); |
a0714e2c | 7297 | gv = gvp ? *gvp : NULL; |
d6a985f2 | 7298 | } |
a72a1c8b | 7299 | } |
ec4ab249 | 7300 | |
b9f751c0 | 7301 | if (gv && GvCVu(gv) && GvIMPORTED_CV(gv)) { |
551405c4 | 7302 | OP * const kid = cUNOPo->op_first; |
f11453cb NC |
7303 | OP * newop; |
7304 | ||
ec4ab249 | 7305 | cUNOPo->op_first = 0; |
f11453cb | 7306 | #ifndef PERL_MAD |
ec4ab249 | 7307 | op_free(o); |
eb8433b7 | 7308 | #endif |
f11453cb NC |
7309 | newop = ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, |
7310 | append_elem(OP_LIST, kid, | |
7311 | scalar(newUNOP(OP_RV2CV, 0, | |
7312 | newGVOP(OP_GV, 0, | |
7313 | gv)))))); | |
7314 | op_getmad(o,newop,'O'); | |
eb8433b7 | 7315 | return newop; |
ec4ab249 GA |
7316 | } |
7317 | ||
11343788 | 7318 | return ck_fun(o); |
8990e307 LW |
7319 | } |
7320 | ||
78f9721b SM |
7321 | OP * |
7322 | Perl_ck_return(pTHX_ OP *o) | |
7323 | { | |
97aff369 | 7324 | dVAR; |
78f9721b | 7325 | if (CvLVALUE(PL_compcv)) { |
6867be6d | 7326 | OP *kid; |
78f9721b SM |
7327 | for (kid = cLISTOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
7328 | mod(kid, OP_LEAVESUBLV); | |
7329 | } | |
7330 | return o; | |
7331 | } | |
7332 | ||
79072805 | 7333 | OP * |
cea2e8a9 | 7334 | Perl_ck_select(pTHX_ OP *o) |
79072805 | 7335 | { |
27da23d5 | 7336 | dVAR; |
c07a80fd | 7337 | OP* kid; |
11343788 MB |
7338 | if (o->op_flags & OPf_KIDS) { |
7339 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
2304df62 | 7340 | if (kid && kid->op_sibling) { |
11343788 | 7341 | o->op_type = OP_SSELECT; |
22c35a8c | 7342 | o->op_ppaddr = PL_ppaddr[OP_SSELECT]; |
11343788 MB |
7343 | o = ck_fun(o); |
7344 | return fold_constants(o); | |
79072805 LW |
7345 | } |
7346 | } | |
11343788 MB |
7347 | o = ck_fun(o); |
7348 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
c07a80fd | 7349 | if (kid && kid->op_type == OP_RV2GV) |
7350 | kid->op_private &= ~HINT_STRICT_REFS; | |
11343788 | 7351 | return o; |
79072805 LW |
7352 | } |
7353 | ||
7354 | OP * | |
cea2e8a9 | 7355 | Perl_ck_shift(pTHX_ OP *o) |
79072805 | 7356 | { |
97aff369 | 7357 | dVAR; |
6867be6d | 7358 | const I32 type = o->op_type; |
79072805 | 7359 | |
11343788 | 7360 | if (!(o->op_flags & OPf_KIDS)) { |
6d4ff0d2 | 7361 | OP *argop; |
eb8433b7 NC |
7362 | /* FIXME - this can be refactored to reduce code in #ifdefs */ |
7363 | #ifdef PERL_MAD | |
1d866c12 | 7364 | OP * const oldo = o; |
eb8433b7 | 7365 | #else |
11343788 | 7366 | op_free(o); |
eb8433b7 | 7367 | #endif |
6d4ff0d2 | 7368 | argop = newUNOP(OP_RV2AV, 0, |
8fde6460 | 7369 | scalar(newGVOP(OP_GV, 0, CvUNIQUE(PL_compcv) ? PL_argvgv : PL_defgv))); |
eb8433b7 NC |
7370 | #ifdef PERL_MAD |
7371 | o = newUNOP(type, 0, scalar(argop)); | |
7372 | op_getmad(oldo,o,'O'); | |
7373 | return o; | |
7374 | #else | |
6d4ff0d2 | 7375 | return newUNOP(type, 0, scalar(argop)); |
eb8433b7 | 7376 | #endif |
79072805 | 7377 | } |
11343788 | 7378 | return scalar(modkids(ck_fun(o), type)); |
79072805 LW |
7379 | } |
7380 | ||
7381 | OP * | |
cea2e8a9 | 7382 | Perl_ck_sort(pTHX_ OP *o) |
79072805 | 7383 | { |
97aff369 | 7384 | dVAR; |
8e3f9bdf | 7385 | OP *firstkid; |
bbce6d69 | 7386 | |
1496a290 | 7387 | if (o->op_type == OP_SORT && (PL_hints & HINT_LOCALIZE_HH) != 0) { |
a4fc7abc | 7388 | HV * const hinthv = GvHV(PL_hintgv); |
7b9ef140 | 7389 | if (hinthv) { |
a4fc7abc | 7390 | SV ** const svp = hv_fetchs(hinthv, "sort", FALSE); |
7b9ef140 | 7391 | if (svp) { |
a4fc7abc | 7392 | const I32 sorthints = (I32)SvIV(*svp); |
7b9ef140 RH |
7393 | if ((sorthints & HINT_SORT_QUICKSORT) != 0) |
7394 | o->op_private |= OPpSORT_QSORT; | |
7395 | if ((sorthints & HINT_SORT_STABLE) != 0) | |
7396 | o->op_private |= OPpSORT_STABLE; | |
7397 | } | |
7398 | } | |
7399 | } | |
7400 | ||
9ea6e965 | 7401 | if (o->op_type == OP_SORT && o->op_flags & OPf_STACKED) |
51a19bc0 | 7402 | simplify_sort(o); |
8e3f9bdf GS |
7403 | firstkid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
7404 | if (o->op_flags & OPf_STACKED) { /* may have been cleared */ | |
9c5ffd7c | 7405 | OP *k = NULL; |
8e3f9bdf | 7406 | OP *kid = cUNOPx(firstkid)->op_first; /* get past null */ |
79072805 | 7407 | |
463ee0b2 | 7408 | if (kid->op_type == OP_SCOPE || kid->op_type == OP_LEAVE) { |
79072805 | 7409 | linklist(kid); |
463ee0b2 LW |
7410 | if (kid->op_type == OP_SCOPE) { |
7411 | k = kid->op_next; | |
7412 | kid->op_next = 0; | |
79072805 | 7413 | } |
463ee0b2 | 7414 | else if (kid->op_type == OP_LEAVE) { |
11343788 | 7415 | if (o->op_type == OP_SORT) { |
93c66552 | 7416 | op_null(kid); /* wipe out leave */ |
748a9306 | 7417 | kid->op_next = kid; |
463ee0b2 | 7418 | |
748a9306 LW |
7419 | for (k = kLISTOP->op_first->op_next; k; k = k->op_next) { |
7420 | if (k->op_next == kid) | |
7421 | k->op_next = 0; | |
71a29c3c GS |
7422 | /* don't descend into loops */ |
7423 | else if (k->op_type == OP_ENTERLOOP | |
7424 | || k->op_type == OP_ENTERITER) | |
7425 | { | |
7426 | k = cLOOPx(k)->op_lastop; | |
7427 | } | |
748a9306 | 7428 | } |
463ee0b2 | 7429 | } |
748a9306 LW |
7430 | else |
7431 | kid->op_next = 0; /* just disconnect the leave */ | |
a0d0e21e | 7432 | k = kLISTOP->op_first; |
463ee0b2 | 7433 | } |
a2efc822 | 7434 | CALL_PEEP(k); |
a0d0e21e | 7435 | |
8e3f9bdf GS |
7436 | kid = firstkid; |
7437 | if (o->op_type == OP_SORT) { | |
7438 | /* provide scalar context for comparison function/block */ | |
7439 | kid = scalar(kid); | |
a0d0e21e | 7440 | kid->op_next = kid; |
8e3f9bdf | 7441 | } |
a0d0e21e LW |
7442 | else |
7443 | kid->op_next = k; | |
11343788 | 7444 | o->op_flags |= OPf_SPECIAL; |
79072805 | 7445 | } |
c6e96bcb | 7446 | else if (kid->op_type == OP_RV2SV || kid->op_type == OP_PADSV) |
93c66552 | 7447 | op_null(firstkid); |
8e3f9bdf GS |
7448 | |
7449 | firstkid = firstkid->op_sibling; | |
79072805 | 7450 | } |
bbce6d69 | 7451 | |
8e3f9bdf GS |
7452 | /* provide list context for arguments */ |
7453 | if (o->op_type == OP_SORT) | |
7454 | list(firstkid); | |
7455 | ||
11343788 | 7456 | return o; |
79072805 | 7457 | } |
bda4119b GS |
7458 | |
7459 | STATIC void | |
cea2e8a9 | 7460 | S_simplify_sort(pTHX_ OP *o) |
9c007264 | 7461 | { |
97aff369 | 7462 | dVAR; |
9c007264 JH |
7463 | register OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
7464 | OP *k; | |
eb209983 | 7465 | int descending; |
350de78d | 7466 | GV *gv; |
770526c1 | 7467 | const char *gvname; |
9c007264 JH |
7468 | if (!(o->op_flags & OPf_STACKED)) |
7469 | return; | |
fafc274c NC |
7470 | GvMULTI_on(gv_fetchpvs("a", GV_ADD|GV_NOTQUAL, SVt_PV)); |
7471 | GvMULTI_on(gv_fetchpvs("b", GV_ADD|GV_NOTQUAL, SVt_PV)); | |
82092f1d | 7472 | kid = kUNOP->op_first; /* get past null */ |
9c007264 JH |
7473 | if (kid->op_type != OP_SCOPE) |
7474 | return; | |
7475 | kid = kLISTOP->op_last; /* get past scope */ | |
7476 | switch(kid->op_type) { | |
7477 | case OP_NCMP: | |
7478 | case OP_I_NCMP: | |
7479 | case OP_SCMP: | |
7480 | break; | |
7481 | default: | |
7482 | return; | |
7483 | } | |
7484 | k = kid; /* remember this node*/ | |
7485 | if (kBINOP->op_first->op_type != OP_RV2SV) | |
7486 | return; | |
7487 | kid = kBINOP->op_first; /* get past cmp */ | |
7488 | if (kUNOP->op_first->op_type != OP_GV) | |
7489 | return; | |
7490 | kid = kUNOP->op_first; /* get past rv2sv */ | |
638eceb6 | 7491 | gv = kGVOP_gv; |
350de78d | 7492 | if (GvSTASH(gv) != PL_curstash) |
9c007264 | 7493 | return; |
770526c1 NC |
7494 | gvname = GvNAME(gv); |
7495 | if (*gvname == 'a' && gvname[1] == '\0') | |
eb209983 | 7496 | descending = 0; |
770526c1 | 7497 | else if (*gvname == 'b' && gvname[1] == '\0') |
eb209983 | 7498 | descending = 1; |
9c007264 JH |
7499 | else |
7500 | return; | |
eb209983 | 7501 | |
9c007264 JH |
7502 | kid = k; /* back to cmp */ |
7503 | if (kBINOP->op_last->op_type != OP_RV2SV) | |
7504 | return; | |
7505 | kid = kBINOP->op_last; /* down to 2nd arg */ | |
7506 | if (kUNOP->op_first->op_type != OP_GV) | |
7507 | return; | |
7508 | kid = kUNOP->op_first; /* get past rv2sv */ | |
638eceb6 | 7509 | gv = kGVOP_gv; |
770526c1 NC |
7510 | if (GvSTASH(gv) != PL_curstash) |
7511 | return; | |
7512 | gvname = GvNAME(gv); | |
7513 | if ( descending | |
7514 | ? !(*gvname == 'a' && gvname[1] == '\0') | |
7515 | : !(*gvname == 'b' && gvname[1] == '\0')) | |
9c007264 JH |
7516 | return; |
7517 | o->op_flags &= ~(OPf_STACKED | OPf_SPECIAL); | |
eb209983 NC |
7518 | if (descending) |
7519 | o->op_private |= OPpSORT_DESCEND; | |
9c007264 JH |
7520 | if (k->op_type == OP_NCMP) |
7521 | o->op_private |= OPpSORT_NUMERIC; | |
7522 | if (k->op_type == OP_I_NCMP) | |
7523 | o->op_private |= OPpSORT_NUMERIC | OPpSORT_INTEGER; | |
e507f050 SM |
7524 | kid = cLISTOPo->op_first->op_sibling; |
7525 | cLISTOPo->op_first->op_sibling = kid->op_sibling; /* bypass old block */ | |
eb8433b7 NC |
7526 | #ifdef PERL_MAD |
7527 | op_getmad(kid,o,'S'); /* then delete it */ | |
7528 | #else | |
e507f050 | 7529 | op_free(kid); /* then delete it */ |
eb8433b7 | 7530 | #endif |
9c007264 | 7531 | } |
79072805 LW |
7532 | |
7533 | OP * | |
cea2e8a9 | 7534 | Perl_ck_split(pTHX_ OP *o) |
79072805 | 7535 | { |
27da23d5 | 7536 | dVAR; |
79072805 | 7537 | register OP *kid; |
aeea060c | 7538 | |
11343788 MB |
7539 | if (o->op_flags & OPf_STACKED) |
7540 | return no_fh_allowed(o); | |
79072805 | 7541 | |
11343788 | 7542 | kid = cLISTOPo->op_first; |
8990e307 | 7543 | if (kid->op_type != OP_NULL) |
cea2e8a9 | 7544 | Perl_croak(aTHX_ "panic: ck_split"); |
8990e307 | 7545 | kid = kid->op_sibling; |
11343788 MB |
7546 | op_free(cLISTOPo->op_first); |
7547 | cLISTOPo->op_first = kid; | |
85e6fe83 | 7548 | if (!kid) { |
396482e1 | 7549 | cLISTOPo->op_first = kid = newSVOP(OP_CONST, 0, newSVpvs(" ")); |
11343788 | 7550 | cLISTOPo->op_last = kid; /* There was only one element previously */ |
85e6fe83 | 7551 | } |
79072805 | 7552 | |
de4bf5b3 | 7553 | if (kid->op_type != OP_MATCH || kid->op_flags & OPf_STACKED) { |
551405c4 | 7554 | OP * const sibl = kid->op_sibling; |
463ee0b2 | 7555 | kid->op_sibling = 0; |
131b3ad0 | 7556 | kid = pmruntime( newPMOP(OP_MATCH, OPf_SPECIAL), kid, 0); |
11343788 MB |
7557 | if (cLISTOPo->op_first == cLISTOPo->op_last) |
7558 | cLISTOPo->op_last = kid; | |
7559 | cLISTOPo->op_first = kid; | |
79072805 LW |
7560 | kid->op_sibling = sibl; |
7561 | } | |
7562 | ||
7563 | kid->op_type = OP_PUSHRE; | |
22c35a8c | 7564 | kid->op_ppaddr = PL_ppaddr[OP_PUSHRE]; |
79072805 | 7565 | scalar(kid); |
041457d9 | 7566 | if (((PMOP *)kid)->op_pmflags & PMf_GLOBAL && ckWARN(WARN_REGEXP)) { |
f34840d8 MJD |
7567 | Perl_warner(aTHX_ packWARN(WARN_REGEXP), |
7568 | "Use of /g modifier is meaningless in split"); | |
7569 | } | |
79072805 LW |
7570 | |
7571 | if (!kid->op_sibling) | |
54b9620d | 7572 | append_elem(OP_SPLIT, o, newDEFSVOP()); |
79072805 LW |
7573 | |
7574 | kid = kid->op_sibling; | |
7575 | scalar(kid); | |
7576 | ||
7577 | if (!kid->op_sibling) | |
11343788 | 7578 | append_elem(OP_SPLIT, o, newSVOP(OP_CONST, 0, newSViv(0))); |
ce3e5c45 | 7579 | assert(kid->op_sibling); |
79072805 LW |
7580 | |
7581 | kid = kid->op_sibling; | |
7582 | scalar(kid); | |
7583 | ||
7584 | if (kid->op_sibling) | |
53e06cf0 | 7585 | return too_many_arguments(o,OP_DESC(o)); |
79072805 | 7586 | |
11343788 | 7587 | return o; |
79072805 LW |
7588 | } |
7589 | ||
7590 | OP * | |
1c846c1f | 7591 | Perl_ck_join(pTHX_ OP *o) |
eb6e2d6f | 7592 | { |
551405c4 | 7593 | const OP * const kid = cLISTOPo->op_first->op_sibling; |
041457d9 DM |
7594 | if (kid && kid->op_type == OP_MATCH) { |
7595 | if (ckWARN(WARN_SYNTAX)) { | |
6867be6d | 7596 | const REGEXP *re = PM_GETRE(kPMOP); |
220fc49f NC |
7597 | const char *pmstr = re ? RX_PRECOMP(re) : "STRING"; |
7598 | const STRLEN len = re ? RX_PRELEN(re) : 6; | |
9014280d | 7599 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
bcdf7404 | 7600 | "/%.*s/ should probably be written as \"%.*s\"", |
d83b45b8 | 7601 | (int)len, pmstr, (int)len, pmstr); |
eb6e2d6f GS |
7602 | } |
7603 | } | |
7604 | return ck_fun(o); | |
7605 | } | |
7606 | ||
7607 | OP * | |
cea2e8a9 | 7608 | Perl_ck_subr(pTHX_ OP *o) |
79072805 | 7609 | { |
97aff369 | 7610 | dVAR; |
11343788 MB |
7611 | OP *prev = ((cUNOPo->op_first->op_sibling) |
7612 | ? cUNOPo : ((UNOP*)cUNOPo->op_first))->op_first; | |
7613 | OP *o2 = prev->op_sibling; | |
4633a7c4 | 7614 | OP *cvop; |
a0751766 | 7615 | const char *proto = NULL; |
cbf82dd0 | 7616 | const char *proto_end = NULL; |
c445ea15 AL |
7617 | CV *cv = NULL; |
7618 | GV *namegv = NULL; | |
4633a7c4 LW |
7619 | int optional = 0; |
7620 | I32 arg = 0; | |
5b794e05 | 7621 | I32 contextclass = 0; |
d3fcec1f | 7622 | const char *e = NULL; |
0723351e | 7623 | bool delete_op = 0; |
4633a7c4 | 7624 | |
d3011074 | 7625 | o->op_private |= OPpENTERSUB_HASTARG; |
11343788 | 7626 | for (cvop = o2; cvop->op_sibling; cvop = cvop->op_sibling) ; |
4633a7c4 LW |
7627 | if (cvop->op_type == OP_RV2CV) { |
7628 | SVOP* tmpop; | |
11343788 | 7629 | o->op_private |= (cvop->op_private & OPpENTERSUB_AMPER); |
93c66552 | 7630 | op_null(cvop); /* disable rv2cv */ |
4633a7c4 | 7631 | tmpop = (SVOP*)((UNOP*)cvop)->op_first; |
76cd736e | 7632 | if (tmpop->op_type == OP_GV && !(o->op_private & OPpENTERSUB_AMPER)) { |
638eceb6 | 7633 | GV *gv = cGVOPx_gv(tmpop); |
350de78d | 7634 | cv = GvCVu(gv); |
76cd736e GS |
7635 | if (!cv) |
7636 | tmpop->op_private |= OPpEARLY_CV; | |
06492da6 SF |
7637 | else { |
7638 | if (SvPOK(cv)) { | |
cbf82dd0 | 7639 | STRLEN len; |
06492da6 | 7640 | namegv = CvANON(cv) ? gv : CvGV(cv); |
cbf82dd0 NC |
7641 | proto = SvPV((SV*)cv, len); |
7642 | proto_end = proto + len; | |
06492da6 | 7643 | } |
46fc3d4c | 7644 | } |
4633a7c4 LW |
7645 | } |
7646 | } | |
f5d5a27c | 7647 | else if (cvop->op_type == OP_METHOD || cvop->op_type == OP_METHOD_NAMED) { |
7a52d87a GS |
7648 | if (o2->op_type == OP_CONST) |
7649 | o2->op_private &= ~OPpCONST_STRICT; | |
58a40671 | 7650 | else if (o2->op_type == OP_LIST) { |
5f66b61c AL |
7651 | OP * const sib = ((UNOP*)o2)->op_first->op_sibling; |
7652 | if (sib && sib->op_type == OP_CONST) | |
7653 | sib->op_private &= ~OPpCONST_STRICT; | |
58a40671 | 7654 | } |
7a52d87a | 7655 | } |
3280af22 NIS |
7656 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
7657 | if (PERLDB_SUB && PL_curstash != PL_debstash) | |
11343788 MB |
7658 | o->op_private |= OPpENTERSUB_DB; |
7659 | while (o2 != cvop) { | |
eb8433b7 | 7660 | OP* o3; |
9fc012f4 GG |
7661 | if (PL_madskills && o2->op_type == OP_STUB) { |
7662 | o2 = o2->op_sibling; | |
7663 | continue; | |
7664 | } | |
eb8433b7 NC |
7665 | if (PL_madskills && o2->op_type == OP_NULL) |
7666 | o3 = ((UNOP*)o2)->op_first; | |
7667 | else | |
7668 | o3 = o2; | |
4633a7c4 | 7669 | if (proto) { |
cbf82dd0 | 7670 | if (proto >= proto_end) |
5dc0d613 | 7671 | return too_many_arguments(o, gv_ename(namegv)); |
cbf82dd0 NC |
7672 | |
7673 | switch (*proto) { | |
4633a7c4 LW |
7674 | case ';': |
7675 | optional = 1; | |
7676 | proto++; | |
7677 | continue; | |
b13fd70a | 7678 | case '_': |
f00d1d61 | 7679 | /* _ must be at the end */ |
cb40c25d | 7680 | if (proto[1] && proto[1] != ';') |
f00d1d61 | 7681 | goto oops; |
4633a7c4 LW |
7682 | case '$': |
7683 | proto++; | |
7684 | arg++; | |
11343788 | 7685 | scalar(o2); |
4633a7c4 LW |
7686 | break; |
7687 | case '%': | |
7688 | case '@': | |
11343788 | 7689 | list(o2); |
4633a7c4 LW |
7690 | arg++; |
7691 | break; | |
7692 | case '&': | |
7693 | proto++; | |
7694 | arg++; | |
eb8433b7 | 7695 | if (o3->op_type != OP_REFGEN && o3->op_type != OP_UNDEF) |
75fc29ea | 7696 | bad_type(arg, |
666ea192 JH |
7697 | arg == 1 ? "block or sub {}" : "sub {}", |
7698 | gv_ename(namegv), o3); | |
4633a7c4 LW |
7699 | break; |
7700 | case '*': | |
2ba6ecf4 | 7701 | /* '*' allows any scalar type, including bareword */ |
4633a7c4 LW |
7702 | proto++; |
7703 | arg++; | |
eb8433b7 | 7704 | if (o3->op_type == OP_RV2GV) |
2ba6ecf4 | 7705 | goto wrapref; /* autoconvert GLOB -> GLOBref */ |
eb8433b7 NC |
7706 | else if (o3->op_type == OP_CONST) |
7707 | o3->op_private &= ~OPpCONST_STRICT; | |
7708 | else if (o3->op_type == OP_ENTERSUB) { | |
9675f7ac | 7709 | /* accidental subroutine, revert to bareword */ |
eb8433b7 | 7710 | OP *gvop = ((UNOP*)o3)->op_first; |
9675f7ac GS |
7711 | if (gvop && gvop->op_type == OP_NULL) { |
7712 | gvop = ((UNOP*)gvop)->op_first; | |
7713 | if (gvop) { | |
7714 | for (; gvop->op_sibling; gvop = gvop->op_sibling) | |
7715 | ; | |
7716 | if (gvop && | |
7717 | (gvop->op_private & OPpENTERSUB_NOPAREN) && | |
7718 | (gvop = ((UNOP*)gvop)->op_first) && | |
7719 | gvop->op_type == OP_GV) | |
7720 | { | |
551405c4 AL |
7721 | GV * const gv = cGVOPx_gv(gvop); |
7722 | OP * const sibling = o2->op_sibling; | |
396482e1 | 7723 | SV * const n = newSVpvs(""); |
eb8433b7 | 7724 | #ifdef PERL_MAD |
1d866c12 | 7725 | OP * const oldo2 = o2; |
eb8433b7 | 7726 | #else |
9675f7ac | 7727 | op_free(o2); |
eb8433b7 | 7728 | #endif |
2a797ae2 | 7729 | gv_fullname4(n, gv, "", FALSE); |
2692f720 | 7730 | o2 = newSVOP(OP_CONST, 0, n); |
eb8433b7 | 7731 | op_getmad(oldo2,o2,'O'); |
9675f7ac GS |
7732 | prev->op_sibling = o2; |
7733 | o2->op_sibling = sibling; | |
7734 | } | |
7735 | } | |
7736 | } | |
7737 | } | |
2ba6ecf4 GS |
7738 | scalar(o2); |
7739 | break; | |
5b794e05 JH |
7740 | case '[': case ']': |
7741 | goto oops; | |
7742 | break; | |
4633a7c4 LW |
7743 | case '\\': |
7744 | proto++; | |
7745 | arg++; | |
5b794e05 | 7746 | again: |
4633a7c4 | 7747 | switch (*proto++) { |
5b794e05 JH |
7748 | case '[': |
7749 | if (contextclass++ == 0) { | |
841d93c8 | 7750 | e = strchr(proto, ']'); |
5b794e05 JH |
7751 | if (!e || e == proto) |
7752 | goto oops; | |
7753 | } | |
7754 | else | |
7755 | goto oops; | |
7756 | goto again; | |
7757 | break; | |
7758 | case ']': | |
466bafcd | 7759 | if (contextclass) { |
a0751766 NC |
7760 | const char *p = proto; |
7761 | const char *const end = proto; | |
466bafcd | 7762 | contextclass = 0; |
466bafcd | 7763 | while (*--p != '['); |
a0751766 NC |
7764 | bad_type(arg, Perl_form(aTHX_ "one of %.*s", |
7765 | (int)(end - p), p), | |
7766 | gv_ename(namegv), o3); | |
466bafcd | 7767 | } else |
5b794e05 JH |
7768 | goto oops; |
7769 | break; | |
4633a7c4 | 7770 | case '*': |
eb8433b7 | 7771 | if (o3->op_type == OP_RV2GV) |
5b794e05 JH |
7772 | goto wrapref; |
7773 | if (!contextclass) | |
eb8433b7 | 7774 | bad_type(arg, "symbol", gv_ename(namegv), o3); |
5b794e05 | 7775 | break; |
4633a7c4 | 7776 | case '&': |
eb8433b7 | 7777 | if (o3->op_type == OP_ENTERSUB) |
5b794e05 JH |
7778 | goto wrapref; |
7779 | if (!contextclass) | |
eb8433b7 NC |
7780 | bad_type(arg, "subroutine entry", gv_ename(namegv), |
7781 | o3); | |
5b794e05 | 7782 | break; |
4633a7c4 | 7783 | case '$': |
eb8433b7 NC |
7784 | if (o3->op_type == OP_RV2SV || |
7785 | o3->op_type == OP_PADSV || | |
7786 | o3->op_type == OP_HELEM || | |
5b9081af | 7787 | o3->op_type == OP_AELEM) |
5b794e05 JH |
7788 | goto wrapref; |
7789 | if (!contextclass) | |
eb8433b7 | 7790 | bad_type(arg, "scalar", gv_ename(namegv), o3); |
5b794e05 | 7791 | break; |
4633a7c4 | 7792 | case '@': |
eb8433b7 NC |
7793 | if (o3->op_type == OP_RV2AV || |
7794 | o3->op_type == OP_PADAV) | |
5b794e05 JH |
7795 | goto wrapref; |
7796 | if (!contextclass) | |
eb8433b7 | 7797 | bad_type(arg, "array", gv_ename(namegv), o3); |
5b794e05 | 7798 | break; |
4633a7c4 | 7799 | case '%': |
eb8433b7 NC |
7800 | if (o3->op_type == OP_RV2HV || |
7801 | o3->op_type == OP_PADHV) | |
5b794e05 JH |
7802 | goto wrapref; |
7803 | if (!contextclass) | |
eb8433b7 | 7804 | bad_type(arg, "hash", gv_ename(namegv), o3); |
5b794e05 JH |
7805 | break; |
7806 | wrapref: | |
4633a7c4 | 7807 | { |
551405c4 AL |
7808 | OP* const kid = o2; |
7809 | OP* const sib = kid->op_sibling; | |
4633a7c4 | 7810 | kid->op_sibling = 0; |
6fa846a0 GS |
7811 | o2 = newUNOP(OP_REFGEN, 0, kid); |
7812 | o2->op_sibling = sib; | |
e858de61 | 7813 | prev->op_sibling = o2; |
4633a7c4 | 7814 | } |
841d93c8 | 7815 | if (contextclass && e) { |
5b794e05 JH |
7816 | proto = e + 1; |
7817 | contextclass = 0; | |
7818 | } | |
4633a7c4 LW |
7819 | break; |
7820 | default: goto oops; | |
7821 | } | |
5b794e05 JH |
7822 | if (contextclass) |
7823 | goto again; | |
4633a7c4 | 7824 | break; |
b1cb66bf | 7825 | case ' ': |
7826 | proto++; | |
7827 | continue; | |
4633a7c4 LW |
7828 | default: |
7829 | oops: | |
35c1215d | 7830 | Perl_croak(aTHX_ "Malformed prototype for %s: %"SVf, |
be2597df | 7831 | gv_ename(namegv), SVfARG(cv)); |
4633a7c4 LW |
7832 | } |
7833 | } | |
7834 | else | |
11343788 MB |
7835 | list(o2); |
7836 | mod(o2, OP_ENTERSUB); | |
7837 | prev = o2; | |
7838 | o2 = o2->op_sibling; | |
551405c4 | 7839 | } /* while */ |
236b555a RGS |
7840 | if (o2 == cvop && proto && *proto == '_') { |
7841 | /* generate an access to $_ */ | |
7842 | o2 = newDEFSVOP(); | |
7843 | o2->op_sibling = prev->op_sibling; | |
7844 | prev->op_sibling = o2; /* instead of cvop */ | |
7845 | } | |
cbf82dd0 | 7846 | if (proto && !optional && proto_end > proto && |
236b555a | 7847 | (*proto != '@' && *proto != '%' && *proto != ';' && *proto != '_')) |
5dc0d613 | 7848 | return too_few_arguments(o, gv_ename(namegv)); |
0723351e | 7849 | if(delete_op) { |
eb8433b7 | 7850 | #ifdef PERL_MAD |
1d866c12 | 7851 | OP * const oldo = o; |
eb8433b7 | 7852 | #else |
06492da6 | 7853 | op_free(o); |
eb8433b7 | 7854 | #endif |
06492da6 | 7855 | o=newSVOP(OP_CONST, 0, newSViv(0)); |
eb8433b7 | 7856 | op_getmad(oldo,o,'O'); |
06492da6 | 7857 | } |
11343788 | 7858 | return o; |
79072805 LW |
7859 | } |
7860 | ||
7861 | OP * | |
cea2e8a9 | 7862 | Perl_ck_svconst(pTHX_ OP *o) |
8990e307 | 7863 | { |
96a5add6 | 7864 | PERL_UNUSED_CONTEXT; |
11343788 MB |
7865 | SvREADONLY_on(cSVOPo->op_sv); |
7866 | return o; | |
8990e307 LW |
7867 | } |
7868 | ||
7869 | OP * | |
d4ac975e GA |
7870 | Perl_ck_chdir(pTHX_ OP *o) |
7871 | { | |
7872 | if (o->op_flags & OPf_KIDS) { | |
1496a290 | 7873 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
d4ac975e GA |
7874 | |
7875 | if (kid && kid->op_type == OP_CONST && | |
7876 | (kid->op_private & OPpCONST_BARE)) | |
7877 | { | |
7878 | o->op_flags |= OPf_SPECIAL; | |
7879 | kid->op_private &= ~OPpCONST_STRICT; | |
7880 | } | |
7881 | } | |
7882 | return ck_fun(o); | |
7883 | } | |
7884 | ||
7885 | OP * | |
cea2e8a9 | 7886 | Perl_ck_trunc(pTHX_ OP *o) |
79072805 | 7887 | { |
11343788 MB |
7888 | if (o->op_flags & OPf_KIDS) { |
7889 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 | 7890 | |
a0d0e21e LW |
7891 | if (kid->op_type == OP_NULL) |
7892 | kid = (SVOP*)kid->op_sibling; | |
bb53490d GS |
7893 | if (kid && kid->op_type == OP_CONST && |
7894 | (kid->op_private & OPpCONST_BARE)) | |
7895 | { | |
11343788 | 7896 | o->op_flags |= OPf_SPECIAL; |
bb53490d GS |
7897 | kid->op_private &= ~OPpCONST_STRICT; |
7898 | } | |
79072805 | 7899 | } |
11343788 | 7900 | return ck_fun(o); |
79072805 LW |
7901 | } |
7902 | ||
35fba0d9 | 7903 | OP * |
bab9c0ac RGS |
7904 | Perl_ck_unpack(pTHX_ OP *o) |
7905 | { | |
7906 | OP *kid = cLISTOPo->op_first; | |
7907 | if (kid->op_sibling) { | |
7908 | kid = kid->op_sibling; | |
7909 | if (!kid->op_sibling) | |
7910 | kid->op_sibling = newDEFSVOP(); | |
7911 | } | |
7912 | return ck_fun(o); | |
7913 | } | |
7914 | ||
7915 | OP * | |
35fba0d9 RG |
7916 | Perl_ck_substr(pTHX_ OP *o) |
7917 | { | |
7918 | o = ck_fun(o); | |
1d866c12 | 7919 | if ((o->op_flags & OPf_KIDS) && (o->op_private == 4)) { |
35fba0d9 RG |
7920 | OP *kid = cLISTOPo->op_first; |
7921 | ||
7922 | if (kid->op_type == OP_NULL) | |
7923 | kid = kid->op_sibling; | |
7924 | if (kid) | |
7925 | kid->op_flags |= OPf_MOD; | |
7926 | ||
7927 | } | |
7928 | return o; | |
7929 | } | |
7930 | ||
878d132a NC |
7931 | OP * |
7932 | Perl_ck_each(pTHX_ OP *o) | |
7933 | { | |
d75c0fe7 | 7934 | dVAR; |
878d132a NC |
7935 | OP *kid = cLISTOPo->op_first; |
7936 | ||
7937 | if (kid->op_type == OP_PADAV || kid->op_type == OP_RV2AV) { | |
7938 | const unsigned new_type = o->op_type == OP_EACH ? OP_AEACH | |
7939 | : o->op_type == OP_KEYS ? OP_AKEYS : OP_AVALUES; | |
7940 | o->op_type = new_type; | |
7941 | o->op_ppaddr = PL_ppaddr[new_type]; | |
7942 | } | |
7943 | else if (!(kid->op_type == OP_PADHV || kid->op_type == OP_RV2HV | |
7944 | || (kid->op_type == OP_CONST && kid->op_private & OPpCONST_BARE) | |
7945 | )) { | |
7946 | bad_type(1, "hash or array", PL_op_desc[o->op_type], kid); | |
7947 | return o; | |
7948 | } | |
7949 | return ck_fun(o); | |
7950 | } | |
7951 | ||
61b743bb DM |
7952 | /* A peephole optimizer. We visit the ops in the order they're to execute. |
7953 | * See the comments at the top of this file for more details about when | |
7954 | * peep() is called */ | |
463ee0b2 | 7955 | |
79072805 | 7956 | void |
864dbfa3 | 7957 | Perl_peep(pTHX_ register OP *o) |
79072805 | 7958 | { |
27da23d5 | 7959 | dVAR; |
c445ea15 | 7960 | register OP* oldop = NULL; |
2d8e6c8d | 7961 | |
2814eb74 | 7962 | if (!o || o->op_opt) |
79072805 | 7963 | return; |
a0d0e21e | 7964 | ENTER; |
462e5cf6 | 7965 | SAVEOP(); |
7766f137 | 7966 | SAVEVPTR(PL_curcop); |
a0d0e21e | 7967 | for (; o; o = o->op_next) { |
2814eb74 | 7968 | if (o->op_opt) |
a0d0e21e | 7969 | break; |
6d7dd4a5 NC |
7970 | /* By default, this op has now been optimised. A couple of cases below |
7971 | clear this again. */ | |
7972 | o->op_opt = 1; | |
533c011a | 7973 | PL_op = o; |
a0d0e21e | 7974 | switch (o->op_type) { |
acb36ea4 | 7975 | case OP_SETSTATE: |
a0d0e21e LW |
7976 | case OP_NEXTSTATE: |
7977 | case OP_DBSTATE: | |
3280af22 | 7978 | PL_curcop = ((COP*)o); /* for warnings */ |
a0d0e21e LW |
7979 | break; |
7980 | ||
a0d0e21e | 7981 | case OP_CONST: |
7a52d87a GS |
7982 | if (cSVOPo->op_private & OPpCONST_STRICT) |
7983 | no_bareword_allowed(o); | |
7766f137 | 7984 | #ifdef USE_ITHREADS |
3848b962 | 7985 | case OP_METHOD_NAMED: |
7766f137 GS |
7986 | /* Relocate sv to the pad for thread safety. |
7987 | * Despite being a "constant", the SV is written to, | |
7988 | * for reference counts, sv_upgrade() etc. */ | |
7989 | if (cSVOP->op_sv) { | |
6867be6d | 7990 | const PADOFFSET ix = pad_alloc(OP_CONST, SVs_PADTMP); |
330e22d5 | 7991 | if (o->op_type == OP_CONST && SvPADTMP(cSVOPo->op_sv)) { |
6a7129a1 | 7992 | /* If op_sv is already a PADTMP then it is being used by |
9a049f1c | 7993 | * some pad, so make a copy. */ |
dd2155a4 DM |
7994 | sv_setsv(PAD_SVl(ix),cSVOPo->op_sv); |
7995 | SvREADONLY_on(PAD_SVl(ix)); | |
6a7129a1 GS |
7996 | SvREFCNT_dec(cSVOPo->op_sv); |
7997 | } | |
052ca17e NC |
7998 | else if (o->op_type == OP_CONST |
7999 | && cSVOPo->op_sv == &PL_sv_undef) { | |
8000 | /* PL_sv_undef is hack - it's unsafe to store it in the | |
8001 | AV that is the pad, because av_fetch treats values of | |
8002 | PL_sv_undef as a "free" AV entry and will merrily | |
8003 | replace them with a new SV, causing pad_alloc to think | |
8004 | that this pad slot is free. (When, clearly, it is not) | |
8005 | */ | |
8006 | SvOK_off(PAD_SVl(ix)); | |
8007 | SvPADTMP_on(PAD_SVl(ix)); | |
8008 | SvREADONLY_on(PAD_SVl(ix)); | |
8009 | } | |
6a7129a1 | 8010 | else { |
dd2155a4 | 8011 | SvREFCNT_dec(PAD_SVl(ix)); |
6a7129a1 | 8012 | SvPADTMP_on(cSVOPo->op_sv); |
dd2155a4 | 8013 | PAD_SETSV(ix, cSVOPo->op_sv); |
9a049f1c | 8014 | /* XXX I don't know how this isn't readonly already. */ |
dd2155a4 | 8015 | SvREADONLY_on(PAD_SVl(ix)); |
6a7129a1 | 8016 | } |
a0714e2c | 8017 | cSVOPo->op_sv = NULL; |
7766f137 GS |
8018 | o->op_targ = ix; |
8019 | } | |
8020 | #endif | |
07447971 GS |
8021 | break; |
8022 | ||
df91b2c5 AE |
8023 | case OP_CONCAT: |
8024 | if (o->op_next && o->op_next->op_type == OP_STRINGIFY) { | |
8025 | if (o->op_next->op_private & OPpTARGET_MY) { | |
8026 | if (o->op_flags & OPf_STACKED) /* chained concats */ | |
a6aa0b75 | 8027 | break; /* ignore_optimization */ |
df91b2c5 AE |
8028 | else { |
8029 | /* assert(PL_opargs[o->op_type] & OA_TARGLEX); */ | |
8030 | o->op_targ = o->op_next->op_targ; | |
8031 | o->op_next->op_targ = 0; | |
8032 | o->op_private |= OPpTARGET_MY; | |
8033 | } | |
8034 | } | |
8035 | op_null(o->op_next); | |
8036 | } | |
df91b2c5 | 8037 | break; |
6d7dd4a5 NC |
8038 | case OP_STUB: |
8039 | if ((o->op_flags & OPf_WANT) != OPf_WANT_LIST) { | |
8040 | break; /* Scalar stub must produce undef. List stub is noop */ | |
8041 | } | |
8042 | goto nothin; | |
79072805 | 8043 | case OP_NULL: |
acb36ea4 GS |
8044 | if (o->op_targ == OP_NEXTSTATE |
8045 | || o->op_targ == OP_DBSTATE | |
8046 | || o->op_targ == OP_SETSTATE) | |
8047 | { | |
3280af22 | 8048 | PL_curcop = ((COP*)o); |
acb36ea4 | 8049 | } |
dad75012 AMS |
8050 | /* XXX: We avoid setting op_seq here to prevent later calls |
8051 | to peep() from mistakenly concluding that optimisation | |
8052 | has already occurred. This doesn't fix the real problem, | |
8053 | though (See 20010220.007). AMS 20010719 */ | |
2814eb74 | 8054 | /* op_seq functionality is now replaced by op_opt */ |
6d7dd4a5 | 8055 | o->op_opt = 0; |
f46f2f82 | 8056 | /* FALL THROUGH */ |
79072805 | 8057 | case OP_SCALAR: |
93a17b20 | 8058 | case OP_LINESEQ: |
463ee0b2 | 8059 | case OP_SCOPE: |
6d7dd4a5 | 8060 | nothin: |
a0d0e21e LW |
8061 | if (oldop && o->op_next) { |
8062 | oldop->op_next = o->op_next; | |
6d7dd4a5 | 8063 | o->op_opt = 0; |
79072805 LW |
8064 | continue; |
8065 | } | |
79072805 LW |
8066 | break; |
8067 | ||
6a077020 | 8068 | case OP_PADAV: |
79072805 | 8069 | case OP_GV: |
6a077020 | 8070 | if (o->op_type == OP_PADAV || o->op_next->op_type == OP_RV2AV) { |
0bd48802 | 8071 | OP* const pop = (o->op_type == OP_PADAV) ? |
6a077020 | 8072 | o->op_next : o->op_next->op_next; |
a0d0e21e | 8073 | IV i; |
f9dc862f | 8074 | if (pop && pop->op_type == OP_CONST && |
af5acbb4 | 8075 | ((PL_op = pop->op_next)) && |
8990e307 | 8076 | pop->op_next->op_type == OP_AELEM && |
a0d0e21e | 8077 | !(pop->op_next->op_private & |
78f9721b | 8078 | (OPpLVAL_INTRO|OPpLVAL_DEFER|OPpDEREF|OPpMAYBE_LVSUB)) && |
fc15ae8f | 8079 | (i = SvIV(((SVOP*)pop)->op_sv) - CopARYBASE_get(PL_curcop)) |
a0d0e21e | 8080 | <= 255 && |
8990e307 LW |
8081 | i >= 0) |
8082 | { | |
350de78d | 8083 | GV *gv; |
af5acbb4 DM |
8084 | if (cSVOPx(pop)->op_private & OPpCONST_STRICT) |
8085 | no_bareword_allowed(pop); | |
6a077020 DM |
8086 | if (o->op_type == OP_GV) |
8087 | op_null(o->op_next); | |
93c66552 DM |
8088 | op_null(pop->op_next); |
8089 | op_null(pop); | |
a0d0e21e LW |
8090 | o->op_flags |= pop->op_next->op_flags & OPf_MOD; |
8091 | o->op_next = pop->op_next->op_next; | |
22c35a8c | 8092 | o->op_ppaddr = PL_ppaddr[OP_AELEMFAST]; |
a0d0e21e | 8093 | o->op_private = (U8)i; |
6a077020 DM |
8094 | if (o->op_type == OP_GV) { |
8095 | gv = cGVOPo_gv; | |
8096 | GvAVn(gv); | |
8097 | } | |
8098 | else | |
8099 | o->op_flags |= OPf_SPECIAL; | |
8100 | o->op_type = OP_AELEMFAST; | |
8101 | } | |
6a077020 DM |
8102 | break; |
8103 | } | |
8104 | ||
8105 | if (o->op_next->op_type == OP_RV2SV) { | |
8106 | if (!(o->op_next->op_private & OPpDEREF)) { | |
8107 | op_null(o->op_next); | |
8108 | o->op_private |= o->op_next->op_private & (OPpLVAL_INTRO | |
8109 | | OPpOUR_INTRO); | |
8110 | o->op_next = o->op_next->op_next; | |
8111 | o->op_type = OP_GVSV; | |
8112 | o->op_ppaddr = PL_ppaddr[OP_GVSV]; | |
8990e307 | 8113 | } |
79072805 | 8114 | } |
e476b1b5 | 8115 | else if ((o->op_private & OPpEARLY_CV) && ckWARN(WARN_PROTOTYPE)) { |
551405c4 | 8116 | GV * const gv = cGVOPo_gv; |
b15aece3 | 8117 | if (SvTYPE(gv) == SVt_PVGV && GvCV(gv) && SvPVX_const(GvCV(gv))) { |
76cd736e | 8118 | /* XXX could check prototype here instead of just carping */ |
551405c4 | 8119 | SV * const sv = sv_newmortal(); |
bd61b366 | 8120 | gv_efullname3(sv, gv, NULL); |
9014280d | 8121 | Perl_warner(aTHX_ packWARN(WARN_PROTOTYPE), |
35c1215d | 8122 | "%"SVf"() called too early to check prototype", |
be2597df | 8123 | SVfARG(sv)); |
76cd736e GS |
8124 | } |
8125 | } | |
89de2904 AMS |
8126 | else if (o->op_next->op_type == OP_READLINE |
8127 | && o->op_next->op_next->op_type == OP_CONCAT | |
8128 | && (o->op_next->op_next->op_flags & OPf_STACKED)) | |
8129 | { | |
d2c45030 AMS |
8130 | /* Turn "$a .= <FH>" into an OP_RCATLINE. AMS 20010917 */ |
8131 | o->op_type = OP_RCATLINE; | |
8132 | o->op_flags |= OPf_STACKED; | |
8133 | o->op_ppaddr = PL_ppaddr[OP_RCATLINE]; | |
89de2904 | 8134 | op_null(o->op_next->op_next); |
d2c45030 | 8135 | op_null(o->op_next); |
89de2904 | 8136 | } |
76cd736e | 8137 | |
79072805 LW |
8138 | break; |
8139 | ||
a0d0e21e | 8140 | case OP_MAPWHILE: |
79072805 LW |
8141 | case OP_GREPWHILE: |
8142 | case OP_AND: | |
8143 | case OP_OR: | |
c963b151 | 8144 | case OP_DOR: |
2c2d71f5 JH |
8145 | case OP_ANDASSIGN: |
8146 | case OP_ORASSIGN: | |
c963b151 | 8147 | case OP_DORASSIGN: |
1a67a97c SM |
8148 | case OP_COND_EXPR: |
8149 | case OP_RANGE: | |
c5917253 | 8150 | case OP_ONCE: |
fd4d1407 IZ |
8151 | while (cLOGOP->op_other->op_type == OP_NULL) |
8152 | cLOGOP->op_other = cLOGOP->op_other->op_next; | |
a2efc822 | 8153 | peep(cLOGOP->op_other); /* Recursive calls are not replaced by fptr calls */ |
79072805 LW |
8154 | break; |
8155 | ||
79072805 | 8156 | case OP_ENTERLOOP: |
9c2ca71a | 8157 | case OP_ENTERITER: |
58cccf98 SM |
8158 | while (cLOOP->op_redoop->op_type == OP_NULL) |
8159 | cLOOP->op_redoop = cLOOP->op_redoop->op_next; | |
79072805 | 8160 | peep(cLOOP->op_redoop); |
58cccf98 SM |
8161 | while (cLOOP->op_nextop->op_type == OP_NULL) |
8162 | cLOOP->op_nextop = cLOOP->op_nextop->op_next; | |
79072805 | 8163 | peep(cLOOP->op_nextop); |
58cccf98 SM |
8164 | while (cLOOP->op_lastop->op_type == OP_NULL) |
8165 | cLOOP->op_lastop = cLOOP->op_lastop->op_next; | |
79072805 LW |
8166 | peep(cLOOP->op_lastop); |
8167 | break; | |
8168 | ||
79072805 | 8169 | case OP_SUBST: |
29f2e912 NC |
8170 | assert(!(cPMOP->op_pmflags & PMf_ONCE)); |
8171 | while (cPMOP->op_pmstashstartu.op_pmreplstart && | |
8172 | cPMOP->op_pmstashstartu.op_pmreplstart->op_type == OP_NULL) | |
8173 | cPMOP->op_pmstashstartu.op_pmreplstart | |
8174 | = cPMOP->op_pmstashstartu.op_pmreplstart->op_next; | |
8175 | peep(cPMOP->op_pmstashstartu.op_pmreplstart); | |
79072805 LW |
8176 | break; |
8177 | ||
a0d0e21e | 8178 | case OP_EXEC: |
041457d9 DM |
8179 | if (o->op_next && o->op_next->op_type == OP_NEXTSTATE |
8180 | && ckWARN(WARN_SYNTAX)) | |
8181 | { | |
1496a290 AL |
8182 | if (o->op_next->op_sibling) { |
8183 | const OPCODE type = o->op_next->op_sibling->op_type; | |
8184 | if (type != OP_EXIT && type != OP_WARN && type != OP_DIE) { | |
8185 | const line_t oldline = CopLINE(PL_curcop); | |
8186 | CopLINE_set(PL_curcop, CopLINE((COP*)o->op_next)); | |
8187 | Perl_warner(aTHX_ packWARN(WARN_EXEC), | |
8188 | "Statement unlikely to be reached"); | |
8189 | Perl_warner(aTHX_ packWARN(WARN_EXEC), | |
8190 | "\t(Maybe you meant system() when you said exec()?)\n"); | |
8191 | CopLINE_set(PL_curcop, oldline); | |
8192 | } | |
a0d0e21e LW |
8193 | } |
8194 | } | |
8195 | break; | |
b2ffa427 | 8196 | |
c750a3ec | 8197 | case OP_HELEM: { |
e75d1f10 | 8198 | UNOP *rop; |
6d822dc4 | 8199 | SV *lexname; |
e75d1f10 | 8200 | GV **fields; |
6d822dc4 | 8201 | SV **svp, *sv; |
d5263905 | 8202 | const char *key = NULL; |
c750a3ec | 8203 | STRLEN keylen; |
b2ffa427 | 8204 | |
1c846c1f | 8205 | if (((BINOP*)o)->op_last->op_type != OP_CONST) |
c750a3ec | 8206 | break; |
1c846c1f NIS |
8207 | |
8208 | /* Make the CONST have a shared SV */ | |
8209 | svp = cSVOPx_svp(((BINOP*)o)->op_last); | |
3049cdab | 8210 | if ((!SvFAKE(sv = *svp) || !SvREADONLY(sv)) && !IS_PADCONST(sv)) { |
d5263905 | 8211 | key = SvPV_const(sv, keylen); |
25716404 | 8212 | lexname = newSVpvn_share(key, |
bb7a0f54 | 8213 | SvUTF8(sv) ? -(I32)keylen : (I32)keylen, |
25716404 | 8214 | 0); |
1c846c1f NIS |
8215 | SvREFCNT_dec(sv); |
8216 | *svp = lexname; | |
8217 | } | |
e75d1f10 RD |
8218 | |
8219 | if ((o->op_private & (OPpLVAL_INTRO))) | |
8220 | break; | |
8221 | ||
8222 | rop = (UNOP*)((BINOP*)o)->op_first; | |
8223 | if (rop->op_type != OP_RV2HV || rop->op_first->op_type != OP_PADSV) | |
8224 | break; | |
8225 | lexname = *av_fetch(PL_comppad_name, rop->op_first->op_targ, TRUE); | |
00b1698f | 8226 | if (!SvPAD_TYPED(lexname)) |
e75d1f10 | 8227 | break; |
a4fc7abc | 8228 | fields = (GV**)hv_fetchs(SvSTASH(lexname), "FIELDS", FALSE); |
e75d1f10 RD |
8229 | if (!fields || !GvHV(*fields)) |
8230 | break; | |
93524f2b | 8231 | key = SvPV_const(*svp, keylen); |
e75d1f10 | 8232 | if (!hv_fetch(GvHV(*fields), key, |
bb7a0f54 | 8233 | SvUTF8(*svp) ? -(I32)keylen : (I32)keylen, FALSE)) |
e75d1f10 RD |
8234 | { |
8235 | Perl_croak(aTHX_ "No such class field \"%s\" " | |
8236 | "in variable %s of type %s", | |
93524f2b | 8237 | key, SvPV_nolen_const(lexname), HvNAME_get(SvSTASH(lexname))); |
e75d1f10 RD |
8238 | } |
8239 | ||
6d822dc4 MS |
8240 | break; |
8241 | } | |
c750a3ec | 8242 | |
e75d1f10 RD |
8243 | case OP_HSLICE: { |
8244 | UNOP *rop; | |
8245 | SV *lexname; | |
8246 | GV **fields; | |
8247 | SV **svp; | |
93524f2b | 8248 | const char *key; |
e75d1f10 RD |
8249 | STRLEN keylen; |
8250 | SVOP *first_key_op, *key_op; | |
8251 | ||
8252 | if ((o->op_private & (OPpLVAL_INTRO)) | |
8253 | /* I bet there's always a pushmark... */ | |
8254 | || ((LISTOP*)o)->op_first->op_sibling->op_type != OP_LIST) | |
8255 | /* hmmm, no optimization if list contains only one key. */ | |
8256 | break; | |
8257 | rop = (UNOP*)((LISTOP*)o)->op_last; | |
8258 | if (rop->op_type != OP_RV2HV) | |
8259 | break; | |
8260 | if (rop->op_first->op_type == OP_PADSV) | |
8261 | /* @$hash{qw(keys here)} */ | |
8262 | rop = (UNOP*)rop->op_first; | |
8263 | else { | |
8264 | /* @{$hash}{qw(keys here)} */ | |
8265 | if (rop->op_first->op_type == OP_SCOPE | |
8266 | && cLISTOPx(rop->op_first)->op_last->op_type == OP_PADSV) | |
8267 | { | |
8268 | rop = (UNOP*)cLISTOPx(rop->op_first)->op_last; | |
8269 | } | |
8270 | else | |
8271 | break; | |
8272 | } | |
8273 | ||
8274 | lexname = *av_fetch(PL_comppad_name, rop->op_targ, TRUE); | |
00b1698f | 8275 | if (!SvPAD_TYPED(lexname)) |
e75d1f10 | 8276 | break; |
a4fc7abc | 8277 | fields = (GV**)hv_fetchs(SvSTASH(lexname), "FIELDS", FALSE); |
e75d1f10 RD |
8278 | if (!fields || !GvHV(*fields)) |
8279 | break; | |
8280 | /* Again guessing that the pushmark can be jumped over.... */ | |
8281 | first_key_op = (SVOP*)((LISTOP*)((LISTOP*)o)->op_first->op_sibling) | |
8282 | ->op_first->op_sibling; | |
8283 | for (key_op = first_key_op; key_op; | |
8284 | key_op = (SVOP*)key_op->op_sibling) { | |
8285 | if (key_op->op_type != OP_CONST) | |
8286 | continue; | |
8287 | svp = cSVOPx_svp(key_op); | |
93524f2b | 8288 | key = SvPV_const(*svp, keylen); |
e75d1f10 | 8289 | if (!hv_fetch(GvHV(*fields), key, |
bb7a0f54 | 8290 | SvUTF8(*svp) ? -(I32)keylen : (I32)keylen, FALSE)) |
e75d1f10 RD |
8291 | { |
8292 | Perl_croak(aTHX_ "No such class field \"%s\" " | |
8293 | "in variable %s of type %s", | |
bfcb3514 | 8294 | key, SvPV_nolen(lexname), HvNAME_get(SvSTASH(lexname))); |
e75d1f10 RD |
8295 | } |
8296 | } | |
8297 | break; | |
8298 | } | |
8299 | ||
fe1bc4cf | 8300 | case OP_SORT: { |
fe1bc4cf | 8301 | /* will point to RV2AV or PADAV op on LHS/RHS of assign */ |
551405c4 | 8302 | OP *oleft; |
fe1bc4cf DM |
8303 | OP *o2; |
8304 | ||
fe1bc4cf | 8305 | /* check that RHS of sort is a single plain array */ |
551405c4 | 8306 | OP *oright = cUNOPo->op_first; |
fe1bc4cf DM |
8307 | if (!oright || oright->op_type != OP_PUSHMARK) |
8308 | break; | |
471178c0 NC |
8309 | |
8310 | /* reverse sort ... can be optimised. */ | |
8311 | if (!cUNOPo->op_sibling) { | |
8312 | /* Nothing follows us on the list. */ | |
551405c4 | 8313 | OP * const reverse = o->op_next; |
471178c0 NC |
8314 | |
8315 | if (reverse->op_type == OP_REVERSE && | |
8316 | (reverse->op_flags & OPf_WANT) == OPf_WANT_LIST) { | |
551405c4 | 8317 | OP * const pushmark = cUNOPx(reverse)->op_first; |
471178c0 NC |
8318 | if (pushmark && (pushmark->op_type == OP_PUSHMARK) |
8319 | && (cUNOPx(pushmark)->op_sibling == o)) { | |
8320 | /* reverse -> pushmark -> sort */ | |
8321 | o->op_private |= OPpSORT_REVERSE; | |
8322 | op_null(reverse); | |
8323 | pushmark->op_next = oright->op_next; | |
8324 | op_null(oright); | |
8325 | } | |
8326 | } | |
8327 | } | |
8328 | ||
8329 | /* make @a = sort @a act in-place */ | |
8330 | ||
fe1bc4cf DM |
8331 | oright = cUNOPx(oright)->op_sibling; |
8332 | if (!oright) | |
8333 | break; | |
8334 | if (oright->op_type == OP_NULL) { /* skip sort block/sub */ | |
8335 | oright = cUNOPx(oright)->op_sibling; | |
8336 | } | |
8337 | ||
8338 | if (!oright || | |
8339 | (oright->op_type != OP_RV2AV && oright->op_type != OP_PADAV) | |
8340 | || oright->op_next != o | |
8341 | || (oright->op_private & OPpLVAL_INTRO) | |
8342 | ) | |
8343 | break; | |
8344 | ||
8345 | /* o2 follows the chain of op_nexts through the LHS of the | |
8346 | * assign (if any) to the aassign op itself */ | |
8347 | o2 = o->op_next; | |
8348 | if (!o2 || o2->op_type != OP_NULL) | |
8349 | break; | |
8350 | o2 = o2->op_next; | |
8351 | if (!o2 || o2->op_type != OP_PUSHMARK) | |
8352 | break; | |
8353 | o2 = o2->op_next; | |
8354 | if (o2 && o2->op_type == OP_GV) | |
8355 | o2 = o2->op_next; | |
8356 | if (!o2 | |
8357 | || (o2->op_type != OP_PADAV && o2->op_type != OP_RV2AV) | |
8358 | || (o2->op_private & OPpLVAL_INTRO) | |
8359 | ) | |
8360 | break; | |
8361 | oleft = o2; | |
8362 | o2 = o2->op_next; | |
8363 | if (!o2 || o2->op_type != OP_NULL) | |
8364 | break; | |
8365 | o2 = o2->op_next; | |
8366 | if (!o2 || o2->op_type != OP_AASSIGN | |
8367 | || (o2->op_flags & OPf_WANT) != OPf_WANT_VOID) | |
8368 | break; | |
8369 | ||
db7511db DM |
8370 | /* check that the sort is the first arg on RHS of assign */ |
8371 | ||
8372 | o2 = cUNOPx(o2)->op_first; | |
8373 | if (!o2 || o2->op_type != OP_NULL) | |
8374 | break; | |
8375 | o2 = cUNOPx(o2)->op_first; | |
8376 | if (!o2 || o2->op_type != OP_PUSHMARK) | |
8377 | break; | |
8378 | if (o2->op_sibling != o) | |
8379 | break; | |
8380 | ||
fe1bc4cf DM |
8381 | /* check the array is the same on both sides */ |
8382 | if (oleft->op_type == OP_RV2AV) { | |
8383 | if (oright->op_type != OP_RV2AV | |
8384 | || !cUNOPx(oright)->op_first | |
8385 | || cUNOPx(oright)->op_first->op_type != OP_GV | |
8386 | || cGVOPx_gv(cUNOPx(oleft)->op_first) != | |
8387 | cGVOPx_gv(cUNOPx(oright)->op_first) | |
8388 | ) | |
8389 | break; | |
8390 | } | |
8391 | else if (oright->op_type != OP_PADAV | |
8392 | || oright->op_targ != oleft->op_targ | |
8393 | ) | |
8394 | break; | |
8395 | ||
8396 | /* transfer MODishness etc from LHS arg to RHS arg */ | |
8397 | oright->op_flags = oleft->op_flags; | |
8398 | o->op_private |= OPpSORT_INPLACE; | |
8399 | ||
8400 | /* excise push->gv->rv2av->null->aassign */ | |
8401 | o2 = o->op_next->op_next; | |
8402 | op_null(o2); /* PUSHMARK */ | |
8403 | o2 = o2->op_next; | |
8404 | if (o2->op_type == OP_GV) { | |
8405 | op_null(o2); /* GV */ | |
8406 | o2 = o2->op_next; | |
8407 | } | |
8408 | op_null(o2); /* RV2AV or PADAV */ | |
8409 | o2 = o2->op_next->op_next; | |
8410 | op_null(o2); /* AASSIGN */ | |
8411 | ||
8412 | o->op_next = o2->op_next; | |
8413 | ||
8414 | break; | |
8415 | } | |
ef3e5ea9 NC |
8416 | |
8417 | case OP_REVERSE: { | |
e682d7b7 | 8418 | OP *ourmark, *theirmark, *ourlast, *iter, *expushmark, *rv2av; |
ce335f37 | 8419 | OP *gvop = NULL; |
ef3e5ea9 | 8420 | LISTOP *enter, *exlist; |
ef3e5ea9 NC |
8421 | |
8422 | enter = (LISTOP *) o->op_next; | |
8423 | if (!enter) | |
8424 | break; | |
8425 | if (enter->op_type == OP_NULL) { | |
8426 | enter = (LISTOP *) enter->op_next; | |
8427 | if (!enter) | |
8428 | break; | |
8429 | } | |
d46f46af NC |
8430 | /* for $a (...) will have OP_GV then OP_RV2GV here. |
8431 | for (...) just has an OP_GV. */ | |
ce335f37 NC |
8432 | if (enter->op_type == OP_GV) { |
8433 | gvop = (OP *) enter; | |
8434 | enter = (LISTOP *) enter->op_next; | |
8435 | if (!enter) | |
8436 | break; | |
d46f46af NC |
8437 | if (enter->op_type == OP_RV2GV) { |
8438 | enter = (LISTOP *) enter->op_next; | |
8439 | if (!enter) | |
ce335f37 | 8440 | break; |
d46f46af | 8441 | } |
ce335f37 NC |
8442 | } |
8443 | ||
ef3e5ea9 NC |
8444 | if (enter->op_type != OP_ENTERITER) |
8445 | break; | |
8446 | ||
8447 | iter = enter->op_next; | |
8448 | if (!iter || iter->op_type != OP_ITER) | |
8449 | break; | |
8450 | ||
ce335f37 NC |
8451 | expushmark = enter->op_first; |
8452 | if (!expushmark || expushmark->op_type != OP_NULL | |
8453 | || expushmark->op_targ != OP_PUSHMARK) | |
8454 | break; | |
8455 | ||
8456 | exlist = (LISTOP *) expushmark->op_sibling; | |
ef3e5ea9 NC |
8457 | if (!exlist || exlist->op_type != OP_NULL |
8458 | || exlist->op_targ != OP_LIST) | |
8459 | break; | |
8460 | ||
8461 | if (exlist->op_last != o) { | |
8462 | /* Mmm. Was expecting to point back to this op. */ | |
8463 | break; | |
8464 | } | |
8465 | theirmark = exlist->op_first; | |
8466 | if (!theirmark || theirmark->op_type != OP_PUSHMARK) | |
8467 | break; | |
8468 | ||
c491ecac | 8469 | if (theirmark->op_sibling != o) { |
ef3e5ea9 NC |
8470 | /* There's something between the mark and the reverse, eg |
8471 | for (1, reverse (...)) | |
8472 | so no go. */ | |
8473 | break; | |
8474 | } | |
8475 | ||
c491ecac NC |
8476 | ourmark = ((LISTOP *)o)->op_first; |
8477 | if (!ourmark || ourmark->op_type != OP_PUSHMARK) | |
8478 | break; | |
8479 | ||
ef3e5ea9 NC |
8480 | ourlast = ((LISTOP *)o)->op_last; |
8481 | if (!ourlast || ourlast->op_next != o) | |
8482 | break; | |
8483 | ||
e682d7b7 NC |
8484 | rv2av = ourmark->op_sibling; |
8485 | if (rv2av && rv2av->op_type == OP_RV2AV && rv2av->op_sibling == 0 | |
8486 | && rv2av->op_flags == (OPf_WANT_LIST | OPf_KIDS) | |
8487 | && enter->op_flags == (OPf_WANT_LIST | OPf_KIDS)) { | |
8488 | /* We're just reversing a single array. */ | |
8489 | rv2av->op_flags = OPf_WANT_SCALAR | OPf_KIDS | OPf_REF; | |
8490 | enter->op_flags |= OPf_STACKED; | |
8491 | } | |
8492 | ||
ef3e5ea9 NC |
8493 | /* We don't have control over who points to theirmark, so sacrifice |
8494 | ours. */ | |
8495 | theirmark->op_next = ourmark->op_next; | |
8496 | theirmark->op_flags = ourmark->op_flags; | |
ce335f37 | 8497 | ourlast->op_next = gvop ? gvop : (OP *) enter; |
ef3e5ea9 NC |
8498 | op_null(ourmark); |
8499 | op_null(o); | |
8500 | enter->op_private |= OPpITER_REVERSED; | |
8501 | iter->op_private |= OPpITER_REVERSED; | |
8502 | ||
8503 | break; | |
8504 | } | |
e26df76a NC |
8505 | |
8506 | case OP_SASSIGN: { | |
8507 | OP *rv2gv; | |
8508 | UNOP *refgen, *rv2cv; | |
8509 | LISTOP *exlist; | |
8510 | ||
50baa5ea | 8511 | if ((o->op_flags & OPf_WANT) != OPf_WANT_VOID) |
de3370bc NC |
8512 | break; |
8513 | ||
e26df76a NC |
8514 | if ((o->op_private & ~OPpASSIGN_BACKWARDS) != 2) |
8515 | break; | |
8516 | ||
8517 | rv2gv = ((BINOP *)o)->op_last; | |
8518 | if (!rv2gv || rv2gv->op_type != OP_RV2GV) | |
8519 | break; | |
8520 | ||
8521 | refgen = (UNOP *)((BINOP *)o)->op_first; | |
8522 | ||
8523 | if (!refgen || refgen->op_type != OP_REFGEN) | |
8524 | break; | |
8525 | ||
8526 | exlist = (LISTOP *)refgen->op_first; | |
8527 | if (!exlist || exlist->op_type != OP_NULL | |
8528 | || exlist->op_targ != OP_LIST) | |
8529 | break; | |
8530 | ||
8531 | if (exlist->op_first->op_type != OP_PUSHMARK) | |
8532 | break; | |
8533 | ||
8534 | rv2cv = (UNOP*)exlist->op_last; | |
8535 | ||
8536 | if (rv2cv->op_type != OP_RV2CV) | |
8537 | break; | |
8538 | ||
8539 | assert ((rv2gv->op_private & OPpDONT_INIT_GV) == 0); | |
8540 | assert ((o->op_private & OPpASSIGN_CV_TO_GV) == 0); | |
8541 | assert ((rv2cv->op_private & OPpMAY_RETURN_CONSTANT) == 0); | |
8542 | ||
8543 | o->op_private |= OPpASSIGN_CV_TO_GV; | |
8544 | rv2gv->op_private |= OPpDONT_INIT_GV; | |
8545 | rv2cv->op_private |= OPpMAY_RETURN_CONSTANT; | |
8546 | ||
8547 | break; | |
8548 | } | |
8549 | ||
fe1bc4cf | 8550 | |
0477511c NC |
8551 | case OP_QR: |
8552 | case OP_MATCH: | |
29f2e912 NC |
8553 | if (!(cPMOP->op_pmflags & PMf_ONCE)) { |
8554 | assert (!cPMOP->op_pmstashstartu.op_pmreplstart); | |
8555 | } | |
79072805 LW |
8556 | break; |
8557 | } | |
a0d0e21e | 8558 | oldop = o; |
79072805 | 8559 | } |
a0d0e21e | 8560 | LEAVE; |
79072805 | 8561 | } |
beab0874 | 8562 | |
cef6ea9d | 8563 | const char* |
1cb0ed9b | 8564 | Perl_custom_op_name(pTHX_ const OP* o) |
53e06cf0 | 8565 | { |
97aff369 | 8566 | dVAR; |
e1ec3a88 | 8567 | const IV index = PTR2IV(o->op_ppaddr); |
53e06cf0 SC |
8568 | SV* keysv; |
8569 | HE* he; | |
8570 | ||
8571 | if (!PL_custom_op_names) /* This probably shouldn't happen */ | |
27da23d5 | 8572 | return (char *)PL_op_name[OP_CUSTOM]; |
53e06cf0 SC |
8573 | |
8574 | keysv = sv_2mortal(newSViv(index)); | |
8575 | ||
8576 | he = hv_fetch_ent(PL_custom_op_names, keysv, 0, 0); | |
8577 | if (!he) | |
27da23d5 | 8578 | return (char *)PL_op_name[OP_CUSTOM]; /* Don't know who you are */ |
53e06cf0 SC |
8579 | |
8580 | return SvPV_nolen(HeVAL(he)); | |
8581 | } | |
8582 | ||
cef6ea9d | 8583 | const char* |
1cb0ed9b | 8584 | Perl_custom_op_desc(pTHX_ const OP* o) |
53e06cf0 | 8585 | { |
97aff369 | 8586 | dVAR; |
e1ec3a88 | 8587 | const IV index = PTR2IV(o->op_ppaddr); |
53e06cf0 SC |
8588 | SV* keysv; |
8589 | HE* he; | |
8590 | ||
8591 | if (!PL_custom_op_descs) | |
27da23d5 | 8592 | return (char *)PL_op_desc[OP_CUSTOM]; |
53e06cf0 SC |
8593 | |
8594 | keysv = sv_2mortal(newSViv(index)); | |
8595 | ||
8596 | he = hv_fetch_ent(PL_custom_op_descs, keysv, 0, 0); | |
8597 | if (!he) | |
27da23d5 | 8598 | return (char *)PL_op_desc[OP_CUSTOM]; |
53e06cf0 SC |
8599 | |
8600 | return SvPV_nolen(HeVAL(he)); | |
8601 | } | |
19e8ce8e | 8602 | |
beab0874 JT |
8603 | #include "XSUB.h" |
8604 | ||
8605 | /* Efficient sub that returns a constant scalar value. */ | |
8606 | static void | |
acfe0abc | 8607 | const_sv_xsub(pTHX_ CV* cv) |
beab0874 | 8608 | { |
97aff369 | 8609 | dVAR; |
beab0874 | 8610 | dXSARGS; |
9cbac4c7 | 8611 | if (items != 0) { |
6f207bd3 | 8612 | NOOP; |
9cbac4c7 DM |
8613 | #if 0 |
8614 | Perl_croak(aTHX_ "usage: %s::%s()", | |
bfcb3514 | 8615 | HvNAME_get(GvSTASH(CvGV(cv))), GvNAME(CvGV(cv))); |
9cbac4c7 DM |
8616 | #endif |
8617 | } | |
9a049f1c | 8618 | EXTEND(sp, 1); |
0768512c | 8619 | ST(0) = (SV*)XSANY.any_ptr; |
beab0874 JT |
8620 | XSRETURN(1); |
8621 | } | |
4946a0fa NC |
8622 | |
8623 | /* | |
8624 | * Local variables: | |
8625 | * c-indentation-style: bsd | |
8626 | * c-basic-offset: 4 | |
8627 | * indent-tabs-mode: t | |
8628 | * End: | |
8629 | * | |
37442d52 RGS |
8630 | * ex: set ts=8 sts=4 sw=4 noet: |
8631 | */ |