Commit | Line | Data |
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4b88f280 | 1 | #line 2 "op.c" |
a0d0e21e | 2 | /* op.c |
79072805 | 3 | * |
1129b882 NC |
4 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
5 | * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others | |
79072805 LW |
6 | * |
7 | * You may distribute under the terms of either the GNU General Public | |
8 | * License or the Artistic License, as specified in the README file. | |
9 | * | |
a0d0e21e LW |
10 | */ |
11 | ||
12 | /* | |
4ac71550 TC |
13 | * 'You see: Mr. Drogo, he married poor Miss Primula Brandybuck. She was |
14 | * our Mr. Bilbo's first cousin on the mother's side (her mother being the | |
15 | * youngest of the Old Took's daughters); and Mr. Drogo was his second | |
16 | * cousin. So Mr. Frodo is his first *and* second cousin, once removed | |
17 | * either way, as the saying is, if you follow me.' --the Gaffer | |
18 | * | |
19 | * [p.23 of _The Lord of the Rings_, I/i: "A Long-Expected Party"] | |
79072805 LW |
20 | */ |
21 | ||
166f8a29 DM |
22 | /* This file contains the functions that create, manipulate and optimize |
23 | * the OP structures that hold a compiled perl program. | |
24 | * | |
25 | * A Perl program is compiled into a tree of OPs. Each op contains | |
26 | * structural pointers (eg to its siblings and the next op in the | |
27 | * execution sequence), a pointer to the function that would execute the | |
28 | * op, plus any data specific to that op. For example, an OP_CONST op | |
29 | * points to the pp_const() function and to an SV containing the constant | |
30 | * value. When pp_const() is executed, its job is to push that SV onto the | |
31 | * stack. | |
32 | * | |
33 | * OPs are mainly created by the newFOO() functions, which are mainly | |
34 | * called from the parser (in perly.y) as the code is parsed. For example | |
35 | * the Perl code $a + $b * $c would cause the equivalent of the following | |
36 | * to be called (oversimplifying a bit): | |
37 | * | |
38 | * newBINOP(OP_ADD, flags, | |
39 | * newSVREF($a), | |
40 | * newBINOP(OP_MULTIPLY, flags, newSVREF($b), newSVREF($c)) | |
41 | * ) | |
42 | * | |
43 | * Note that during the build of miniperl, a temporary copy of this file | |
44 | * is made, called opmini.c. | |
45 | */ | |
ccfc67b7 | 46 | |
61b743bb DM |
47 | /* |
48 | Perl's compiler is essentially a 3-pass compiler with interleaved phases: | |
49 | ||
50 | A bottom-up pass | |
51 | A top-down pass | |
52 | An execution-order pass | |
53 | ||
54 | The bottom-up pass is represented by all the "newOP" routines and | |
55 | the ck_ routines. The bottom-upness is actually driven by yacc. | |
56 | So at the point that a ck_ routine fires, we have no idea what the | |
57 | context is, either upward in the syntax tree, or either forward or | |
58 | backward in the execution order. (The bottom-up parser builds that | |
59 | part of the execution order it knows about, but if you follow the "next" | |
60 | links around, you'll find it's actually a closed loop through the | |
ef9da979 | 61 | top level node.) |
61b743bb DM |
62 | |
63 | Whenever the bottom-up parser gets to a node that supplies context to | |
64 | its components, it invokes that portion of the top-down pass that applies | |
65 | to that part of the subtree (and marks the top node as processed, so | |
66 | if a node further up supplies context, it doesn't have to take the | |
67 | plunge again). As a particular subcase of this, as the new node is | |
68 | built, it takes all the closed execution loops of its subcomponents | |
69 | and links them into a new closed loop for the higher level node. But | |
70 | it's still not the real execution order. | |
71 | ||
72 | The actual execution order is not known till we get a grammar reduction | |
73 | to a top-level unit like a subroutine or file that will be called by | |
74 | "name" rather than via a "next" pointer. At that point, we can call | |
75 | into peep() to do that code's portion of the 3rd pass. It has to be | |
76 | recursive, but it's recursive on basic blocks, not on tree nodes. | |
77 | */ | |
78 | ||
06e0342d | 79 | /* To implement user lexical pragmas, there needs to be a way at run time to |
b3ca2e83 NC |
80 | get the compile time state of %^H for that block. Storing %^H in every |
81 | block (or even COP) would be very expensive, so a different approach is | |
82 | taken. The (running) state of %^H is serialised into a tree of HE-like | |
83 | structs. Stores into %^H are chained onto the current leaf as a struct | |
84 | refcounted_he * with the key and the value. Deletes from %^H are saved | |
85 | with a value of PL_sv_placeholder. The state of %^H at any point can be | |
86 | turned back into a regular HV by walking back up the tree from that point's | |
06e0342d | 87 | leaf, ignoring any key you've already seen (placeholder or not), storing |
b3ca2e83 NC |
88 | the rest into the HV structure, then removing the placeholders. Hence |
89 | memory is only used to store the %^H deltas from the enclosing COP, rather | |
90 | than the entire %^H on each COP. | |
91 | ||
92 | To cause actions on %^H to write out the serialisation records, it has | |
93 | magic type 'H'. This magic (itself) does nothing, but its presence causes | |
94 | the values to gain magic type 'h', which has entries for set and clear. | |
c28fe1ec | 95 | C<Perl_magic_sethint> updates C<PL_compiling.cop_hints_hash> with a store |
34795b44 | 96 | record, with deletes written by C<Perl_magic_clearhint>. C<SAVEHINTS> |
c28fe1ec NC |
97 | saves the current C<PL_compiling.cop_hints_hash> on the save stack, so that |
98 | it will be correctly restored when any inner compiling scope is exited. | |
b3ca2e83 NC |
99 | */ |
100 | ||
79072805 | 101 | #include "EXTERN.h" |
864dbfa3 | 102 | #define PERL_IN_OP_C |
79072805 | 103 | #include "perl.h" |
77ca0c92 | 104 | #include "keywords.h" |
2846acbf | 105 | #include "feature.h" |
79072805 | 106 | |
16c91539 | 107 | #define CALL_PEEP(o) PL_peepp(aTHX_ o) |
1a0a2ba9 | 108 | #define CALL_RPEEP(o) PL_rpeepp(aTHX_ o) |
16c91539 | 109 | #define CALL_OPFREEHOOK(o) if (PL_opfreehook) PL_opfreehook(aTHX_ o) |
a2efc822 | 110 | |
238a4c30 NIS |
111 | #if defined(PL_OP_SLAB_ALLOC) |
112 | ||
f1fac472 NC |
113 | #ifdef PERL_DEBUG_READONLY_OPS |
114 | # define PERL_SLAB_SIZE 4096 | |
115 | # include <sys/mman.h> | |
116 | #endif | |
117 | ||
238a4c30 NIS |
118 | #ifndef PERL_SLAB_SIZE |
119 | #define PERL_SLAB_SIZE 2048 | |
120 | #endif | |
121 | ||
c7e45529 | 122 | void * |
e91d68d5 | 123 | Perl_Slab_Alloc(pTHX_ size_t sz) |
1c846c1f | 124 | { |
5186cc12 | 125 | dVAR; |
5a8e194f NIS |
126 | /* |
127 | * To make incrementing use count easy PL_OpSlab is an I32 * | |
128 | * To make inserting the link to slab PL_OpPtr is I32 ** | |
129 | * So compute size in units of sizeof(I32 *) as that is how Pl_OpPtr increments | |
130 | * Add an overhead for pointer to slab and round up as a number of pointers | |
131 | */ | |
132 | sz = (sz + 2*sizeof(I32 *) -1)/sizeof(I32 *); | |
238a4c30 | 133 | if ((PL_OpSpace -= sz) < 0) { |
f1fac472 NC |
134 | #ifdef PERL_DEBUG_READONLY_OPS |
135 | /* We need to allocate chunk by chunk so that we can control the VM | |
136 | mapping */ | |
5186cc12 | 137 | PL_OpPtr = (I32**) mmap(0, PERL_SLAB_SIZE*sizeof(I32*), PROT_READ|PROT_WRITE, |
f1fac472 NC |
138 | MAP_ANON|MAP_PRIVATE, -1, 0); |
139 | ||
140 | DEBUG_m(PerlIO_printf(Perl_debug_log, "mapped %lu at %p\n", | |
141 | (unsigned long) PERL_SLAB_SIZE*sizeof(I32*), | |
142 | PL_OpPtr)); | |
143 | if(PL_OpPtr == MAP_FAILED) { | |
144 | perror("mmap failed"); | |
145 | abort(); | |
146 | } | |
147 | #else | |
277e868c NC |
148 | |
149 | PL_OpPtr = (I32 **) PerlMemShared_calloc(PERL_SLAB_SIZE,sizeof(I32*)); | |
f1fac472 | 150 | #endif |
083fcd59 | 151 | if (!PL_OpPtr) { |
238a4c30 NIS |
152 | return NULL; |
153 | } | |
5a8e194f NIS |
154 | /* We reserve the 0'th I32 sized chunk as a use count */ |
155 | PL_OpSlab = (I32 *) PL_OpPtr; | |
156 | /* Reduce size by the use count word, and by the size we need. | |
157 | * Latter is to mimic the '-=' in the if() above | |
158 | */ | |
159 | PL_OpSpace = PERL_SLAB_SIZE - (sizeof(I32)+sizeof(I32 **)-1)/sizeof(I32 **) - sz; | |
238a4c30 NIS |
160 | /* Allocation pointer starts at the top. |
161 | Theory: because we build leaves before trunk allocating at end | |
162 | means that at run time access is cache friendly upward | |
163 | */ | |
5a8e194f | 164 | PL_OpPtr += PERL_SLAB_SIZE; |
f1fac472 NC |
165 | |
166 | #ifdef PERL_DEBUG_READONLY_OPS | |
167 | /* We remember this slab. */ | |
168 | /* This implementation isn't efficient, but it is simple. */ | |
5186cc12 | 169 | PL_slabs = (I32**) realloc(PL_slabs, sizeof(I32**) * (PL_slab_count + 1)); |
f1fac472 NC |
170 | PL_slabs[PL_slab_count++] = PL_OpSlab; |
171 | DEBUG_m(PerlIO_printf(Perl_debug_log, "Allocate %p\n", PL_OpSlab)); | |
172 | #endif | |
238a4c30 NIS |
173 | } |
174 | assert( PL_OpSpace >= 0 ); | |
175 | /* Move the allocation pointer down */ | |
176 | PL_OpPtr -= sz; | |
5a8e194f | 177 | assert( PL_OpPtr > (I32 **) PL_OpSlab ); |
238a4c30 NIS |
178 | *PL_OpPtr = PL_OpSlab; /* Note which slab it belongs to */ |
179 | (*PL_OpSlab)++; /* Increment use count of slab */ | |
5a8e194f | 180 | assert( PL_OpPtr+sz <= ((I32 **) PL_OpSlab + PERL_SLAB_SIZE) ); |
238a4c30 NIS |
181 | assert( *PL_OpSlab > 0 ); |
182 | return (void *)(PL_OpPtr + 1); | |
183 | } | |
184 | ||
f1fac472 NC |
185 | #ifdef PERL_DEBUG_READONLY_OPS |
186 | void | |
187 | Perl_pending_Slabs_to_ro(pTHX) { | |
188 | /* Turn all the allocated op slabs read only. */ | |
189 | U32 count = PL_slab_count; | |
190 | I32 **const slabs = PL_slabs; | |
191 | ||
192 | /* Reset the array of pending OP slabs, as we're about to turn this lot | |
193 | read only. Also, do it ahead of the loop in case the warn triggers, | |
194 | and a warn handler has an eval */ | |
195 | ||
f1fac472 NC |
196 | PL_slabs = NULL; |
197 | PL_slab_count = 0; | |
198 | ||
199 | /* Force a new slab for any further allocation. */ | |
200 | PL_OpSpace = 0; | |
201 | ||
202 | while (count--) { | |
5892a4d4 | 203 | void *const start = slabs[count]; |
f1fac472 NC |
204 | const size_t size = PERL_SLAB_SIZE* sizeof(I32*); |
205 | if(mprotect(start, size, PROT_READ)) { | |
206 | Perl_warn(aTHX_ "mprotect for %p %lu failed with %d", | |
207 | start, (unsigned long) size, errno); | |
208 | } | |
209 | } | |
5892a4d4 NC |
210 | |
211 | free(slabs); | |
f1fac472 NC |
212 | } |
213 | ||
214 | STATIC void | |
215 | S_Slab_to_rw(pTHX_ void *op) | |
216 | { | |
217 | I32 * const * const ptr = (I32 **) op; | |
218 | I32 * const slab = ptr[-1]; | |
7918f24d NC |
219 | |
220 | PERL_ARGS_ASSERT_SLAB_TO_RW; | |
221 | ||
f1fac472 NC |
222 | assert( ptr-1 > (I32 **) slab ); |
223 | assert( ptr < ( (I32 **) slab + PERL_SLAB_SIZE) ); | |
224 | assert( *slab > 0 ); | |
225 | if(mprotect(slab, PERL_SLAB_SIZE*sizeof(I32*), PROT_READ|PROT_WRITE)) { | |
226 | Perl_warn(aTHX_ "mprotect RW for %p %lu failed with %d", | |
227 | slab, (unsigned long) PERL_SLAB_SIZE*sizeof(I32*), errno); | |
228 | } | |
229 | } | |
fc97af9c NC |
230 | |
231 | OP * | |
232 | Perl_op_refcnt_inc(pTHX_ OP *o) | |
233 | { | |
234 | if(o) { | |
235 | Slab_to_rw(o); | |
236 | ++o->op_targ; | |
237 | } | |
238 | return o; | |
239 | ||
240 | } | |
241 | ||
242 | PADOFFSET | |
243 | Perl_op_refcnt_dec(pTHX_ OP *o) | |
244 | { | |
7918f24d | 245 | PERL_ARGS_ASSERT_OP_REFCNT_DEC; |
fc97af9c NC |
246 | Slab_to_rw(o); |
247 | return --o->op_targ; | |
248 | } | |
f1fac472 NC |
249 | #else |
250 | # define Slab_to_rw(op) | |
251 | #endif | |
252 | ||
c7e45529 AE |
253 | void |
254 | Perl_Slab_Free(pTHX_ void *op) | |
238a4c30 | 255 | { |
551405c4 | 256 | I32 * const * const ptr = (I32 **) op; |
aec46f14 | 257 | I32 * const slab = ptr[-1]; |
7918f24d | 258 | PERL_ARGS_ASSERT_SLAB_FREE; |
5a8e194f NIS |
259 | assert( ptr-1 > (I32 **) slab ); |
260 | assert( ptr < ( (I32 **) slab + PERL_SLAB_SIZE) ); | |
238a4c30 | 261 | assert( *slab > 0 ); |
f1fac472 | 262 | Slab_to_rw(op); |
238a4c30 | 263 | if (--(*slab) == 0) { |
7e4e8c89 NC |
264 | # ifdef NETWARE |
265 | # define PerlMemShared PerlMem | |
266 | # endif | |
083fcd59 | 267 | |
f1fac472 | 268 | #ifdef PERL_DEBUG_READONLY_OPS |
782a40f1 | 269 | U32 count = PL_slab_count; |
f1fac472 | 270 | /* Need to remove this slab from our list of slabs */ |
782a40f1 | 271 | if (count) { |
f1fac472 NC |
272 | while (count--) { |
273 | if (PL_slabs[count] == slab) { | |
5186cc12 | 274 | dVAR; |
f1fac472 NC |
275 | /* Found it. Move the entry at the end to overwrite it. */ |
276 | DEBUG_m(PerlIO_printf(Perl_debug_log, | |
277 | "Deallocate %p by moving %p from %lu to %lu\n", | |
278 | PL_OpSlab, | |
279 | PL_slabs[PL_slab_count - 1], | |
280 | PL_slab_count, count)); | |
281 | PL_slabs[count] = PL_slabs[--PL_slab_count]; | |
282 | /* Could realloc smaller at this point, but probably not | |
283 | worth it. */ | |
fc97af9c NC |
284 | if(munmap(slab, PERL_SLAB_SIZE*sizeof(I32*))) { |
285 | perror("munmap failed"); | |
286 | abort(); | |
287 | } | |
288 | break; | |
f1fac472 | 289 | } |
f1fac472 NC |
290 | } |
291 | } | |
292 | #else | |
083fcd59 | 293 | PerlMemShared_free(slab); |
f1fac472 | 294 | #endif |
238a4c30 NIS |
295 | if (slab == PL_OpSlab) { |
296 | PL_OpSpace = 0; | |
297 | } | |
298 | } | |
b7dc083c | 299 | } |
b7dc083c | 300 | #endif |
e50aee73 | 301 | /* |
ce6f1cbc | 302 | * In the following definition, the ", (OP*)0" is just to make the compiler |
a5f75d66 | 303 | * think the expression is of the right type: croak actually does a Siglongjmp. |
e50aee73 | 304 | */ |
11343788 | 305 | #define CHECKOP(type,o) \ |
ce6f1cbc | 306 | ((PL_op_mask && PL_op_mask[type]) \ |
5dc0d613 | 307 | ? ( op_free((OP*)o), \ |
cb77fdf0 | 308 | Perl_croak(aTHX_ "'%s' trapped by operation mask", PL_op_desc[type]), \ |
ce6f1cbc | 309 | (OP*)0 ) \ |
16c91539 | 310 | : PL_check[type](aTHX_ (OP*)o)) |
e50aee73 | 311 | |
e6438c1a | 312 | #define RETURN_UNLIMITED_NUMBER (PERL_INT_MAX / 2) |
c53d7c7d | 313 | |
cba5a3b0 DG |
314 | #define CHANGE_TYPE(o,type) \ |
315 | STMT_START { \ | |
316 | o->op_type = (OPCODE)type; \ | |
317 | o->op_ppaddr = PL_ppaddr[type]; \ | |
318 | } STMT_END | |
319 | ||
ce16c625 | 320 | STATIC SV* |
cea2e8a9 | 321 | S_gv_ename(pTHX_ GV *gv) |
4633a7c4 | 322 | { |
46c461b5 | 323 | SV* const tmpsv = sv_newmortal(); |
7918f24d NC |
324 | |
325 | PERL_ARGS_ASSERT_GV_ENAME; | |
326 | ||
bd61b366 | 327 | gv_efullname3(tmpsv, gv, NULL); |
ce16c625 | 328 | return tmpsv; |
4633a7c4 LW |
329 | } |
330 | ||
76e3520e | 331 | STATIC OP * |
cea2e8a9 | 332 | S_no_fh_allowed(pTHX_ OP *o) |
79072805 | 333 | { |
7918f24d NC |
334 | PERL_ARGS_ASSERT_NO_FH_ALLOWED; |
335 | ||
cea2e8a9 | 336 | yyerror(Perl_form(aTHX_ "Missing comma after first argument to %s function", |
53e06cf0 | 337 | OP_DESC(o))); |
11343788 | 338 | return o; |
79072805 LW |
339 | } |
340 | ||
76e3520e | 341 | STATIC OP * |
ce16c625 | 342 | S_too_few_arguments_sv(pTHX_ OP *o, SV *namesv, U32 flags) |
79072805 | 343 | { |
ce16c625 BF |
344 | PERL_ARGS_ASSERT_TOO_FEW_ARGUMENTS_SV; |
345 | yyerror_pv(Perl_form(aTHX_ "Not enough arguments for %"SVf, namesv), | |
346 | SvUTF8(namesv) | flags); | |
347 | return o; | |
348 | } | |
349 | ||
350 | STATIC OP * | |
351 | S_too_few_arguments_pv(pTHX_ OP *o, const char* name, U32 flags) | |
352 | { | |
353 | PERL_ARGS_ASSERT_TOO_FEW_ARGUMENTS_PV; | |
354 | yyerror_pv(Perl_form(aTHX_ "Not enough arguments for %s", name), flags); | |
355 | return o; | |
356 | } | |
357 | ||
358 | STATIC OP * | |
359 | S_too_many_arguments_pv(pTHX_ OP *o, const char *name, U32 flags) | |
360 | { | |
361 | PERL_ARGS_ASSERT_TOO_MANY_ARGUMENTS_PV; | |
7918f24d | 362 | |
ce16c625 | 363 | yyerror_pv(Perl_form(aTHX_ "Too many arguments for %s", name), flags); |
11343788 | 364 | return o; |
79072805 LW |
365 | } |
366 | ||
76e3520e | 367 | STATIC OP * |
ce16c625 | 368 | S_too_many_arguments_sv(pTHX_ OP *o, SV *namesv, U32 flags) |
79072805 | 369 | { |
ce16c625 | 370 | PERL_ARGS_ASSERT_TOO_MANY_ARGUMENTS_SV; |
7918f24d | 371 | |
ce16c625 BF |
372 | yyerror_pv(Perl_form(aTHX_ "Too many arguments for %"SVf, SVfARG(namesv)), |
373 | SvUTF8(namesv) | flags); | |
11343788 | 374 | return o; |
79072805 LW |
375 | } |
376 | ||
76e3520e | 377 | STATIC void |
ce16c625 | 378 | S_bad_type_pv(pTHX_ I32 n, const char *t, const char *name, U32 flags, const OP *kid) |
8990e307 | 379 | { |
ce16c625 BF |
380 | PERL_ARGS_ASSERT_BAD_TYPE_PV; |
381 | ||
382 | yyerror_pv(Perl_form(aTHX_ "Type of arg %d to %s must be %s (not %s)", | |
383 | (int)n, name, t, OP_DESC(kid)), flags); | |
384 | } | |
7918f24d | 385 | |
ce16c625 BF |
386 | STATIC void |
387 | S_bad_type_sv(pTHX_ I32 n, const char *t, SV *namesv, U32 flags, const OP *kid) | |
388 | { | |
389 | PERL_ARGS_ASSERT_BAD_TYPE_SV; | |
390 | ||
391 | yyerror_pv(Perl_form(aTHX_ "Type of arg %d to %"SVf" must be %s (not %s)", | |
392 | (int)n, SVfARG(namesv), t, OP_DESC(kid)), SvUTF8(namesv) | flags); | |
8990e307 LW |
393 | } |
394 | ||
7a52d87a | 395 | STATIC void |
eb796c7f | 396 | S_no_bareword_allowed(pTHX_ OP *o) |
7a52d87a | 397 | { |
7918f24d NC |
398 | PERL_ARGS_ASSERT_NO_BAREWORD_ALLOWED; |
399 | ||
eb8433b7 NC |
400 | if (PL_madskills) |
401 | return; /* various ok barewords are hidden in extra OP_NULL */ | |
5a844595 | 402 | qerror(Perl_mess(aTHX_ |
35c1215d | 403 | "Bareword \"%"SVf"\" not allowed while \"strict subs\" in use", |
be2597df | 404 | SVfARG(cSVOPo_sv))); |
eb796c7f | 405 | o->op_private &= ~OPpCONST_STRICT; /* prevent warning twice about the same OP */ |
7a52d87a GS |
406 | } |
407 | ||
79072805 LW |
408 | /* "register" allocation */ |
409 | ||
410 | PADOFFSET | |
d6447115 | 411 | Perl_allocmy(pTHX_ const char *const name, const STRLEN len, const U32 flags) |
93a17b20 | 412 | { |
97aff369 | 413 | dVAR; |
a0d0e21e | 414 | PADOFFSET off; |
12bd6ede | 415 | const bool is_our = (PL_parser->in_my == KEY_our); |
a0d0e21e | 416 | |
7918f24d NC |
417 | PERL_ARGS_ASSERT_ALLOCMY; |
418 | ||
48d0d1be | 419 | if (flags & ~SVf_UTF8) |
d6447115 NC |
420 | Perl_croak(aTHX_ "panic: allocmy illegal flag bits 0x%" UVxf, |
421 | (UV)flags); | |
422 | ||
423 | /* Until we're using the length for real, cross check that we're being | |
424 | told the truth. */ | |
425 | assert(strlen(name) == len); | |
426 | ||
59f00321 | 427 | /* complain about "my $<special_var>" etc etc */ |
d6447115 | 428 | if (len && |
3edf23ff | 429 | !(is_our || |
155aba94 | 430 | isALPHA(name[1]) || |
b14845b4 | 431 | ((flags & SVf_UTF8) && isIDFIRST_utf8((U8 *)name+1)) || |
d6447115 | 432 | (name[1] == '_' && (*name == '$' || len > 2)))) |
834a4ddd | 433 | { |
6b58708b | 434 | /* name[2] is true if strlen(name) > 2 */ |
b14845b4 FC |
435 | if (!(flags & SVf_UTF8 && UTF8_IS_START(name[1])) |
436 | && (!isPRINT(name[1]) || strchr("\t\n\r\f", name[1]))) { | |
d6447115 NC |
437 | yyerror(Perl_form(aTHX_ "Can't use global %c^%c%.*s in \"%s\"", |
438 | name[0], toCTRL(name[1]), (int)(len - 2), name + 2, | |
aab6a793 | 439 | PL_parser->in_my == KEY_state ? "state" : "my")); |
d1544d85 | 440 | } else { |
ce16c625 BF |
441 | yyerror_pv(Perl_form(aTHX_ "Can't use global %.*s in \"%s\"", (int) len, name, |
442 | PL_parser->in_my == KEY_state ? "state" : "my"), flags & SVf_UTF8); | |
46fc3d4c | 443 | } |
a0d0e21e | 444 | } |
748a9306 | 445 | |
dd2155a4 | 446 | /* allocate a spare slot and store the name in that slot */ |
93a17b20 | 447 | |
cc76b5cc | 448 | off = pad_add_name_pvn(name, len, |
48d0d1be BF |
449 | (is_our ? padadd_OUR : |
450 | PL_parser->in_my == KEY_state ? padadd_STATE : 0) | |
451 | | ( flags & SVf_UTF8 ? SVf_UTF8 : 0 ), | |
12bd6ede | 452 | PL_parser->in_my_stash, |
3edf23ff | 453 | (is_our |
133706a6 RGS |
454 | /* $_ is always in main::, even with our */ |
455 | ? (PL_curstash && !strEQ(name,"$_") ? PL_curstash : PL_defstash) | |
5c284bb0 | 456 | : NULL |
cca43f78 | 457 | ) |
dd2155a4 | 458 | ); |
a74073ad DM |
459 | /* anon sub prototypes contains state vars should always be cloned, |
460 | * otherwise the state var would be shared between anon subs */ | |
461 | ||
462 | if (PL_parser->in_my == KEY_state && CvANON(PL_compcv)) | |
463 | CvCLONE_on(PL_compcv); | |
464 | ||
dd2155a4 | 465 | return off; |
79072805 LW |
466 | } |
467 | ||
d4d03940 FC |
468 | #ifdef USE_ITHREADS |
469 | PADOFFSET | |
470 | Perl_alloccopstash(pTHX_ HV *hv) | |
471 | { | |
472 | PADOFFSET off = 0, o = 1; | |
473 | bool found_slot = FALSE; | |
474 | ||
475 | PERL_ARGS_ASSERT_ALLOCCOPSTASH; | |
476 | ||
477 | if (PL_stashpad[PL_stashpadix] == hv) return PL_stashpadix; | |
478 | ||
479 | for (; o < PL_stashpadmax; ++o) { | |
480 | if (PL_stashpad[o] == hv) return PL_stashpadix = o; | |
481 | if (!PL_stashpad[o] || SvTYPE(PL_stashpad[o]) != SVt_PVHV) | |
482 | found_slot = TRUE, off = o; | |
483 | } | |
484 | if (!found_slot) { | |
485 | Renew(PL_stashpad, PL_stashpadmax + 10, HV *); | |
486 | Zero(PL_stashpad + PL_stashpadmax, 10, HV *); | |
487 | off = PL_stashpadmax; | |
488 | PL_stashpadmax += 10; | |
489 | } | |
490 | ||
491 | PL_stashpad[PL_stashpadix = off] = hv; | |
492 | return off; | |
493 | } | |
494 | #endif | |
495 | ||
d2c837a0 DM |
496 | /* free the body of an op without examining its contents. |
497 | * Always use this rather than FreeOp directly */ | |
498 | ||
4136a0f7 | 499 | static void |
d2c837a0 DM |
500 | S_op_destroy(pTHX_ OP *o) |
501 | { | |
502 | if (o->op_latefree) { | |
503 | o->op_latefreed = 1; | |
504 | return; | |
505 | } | |
506 | FreeOp(o); | |
507 | } | |
508 | ||
c4bd3ae5 NC |
509 | #ifdef USE_ITHREADS |
510 | # define forget_pmop(a,b) S_forget_pmop(aTHX_ a,b) | |
511 | #else | |
512 | # define forget_pmop(a,b) S_forget_pmop(aTHX_ a) | |
513 | #endif | |
d2c837a0 | 514 | |
79072805 LW |
515 | /* Destructor */ |
516 | ||
517 | void | |
864dbfa3 | 518 | Perl_op_free(pTHX_ OP *o) |
79072805 | 519 | { |
27da23d5 | 520 | dVAR; |
acb36ea4 | 521 | OPCODE type; |
79072805 | 522 | |
85594c31 | 523 | if (!o) |
79072805 | 524 | return; |
670f3923 DM |
525 | if (o->op_latefreed) { |
526 | if (o->op_latefree) | |
527 | return; | |
528 | goto do_free; | |
529 | } | |
79072805 | 530 | |
67566ccd | 531 | type = o->op_type; |
7934575e | 532 | if (o->op_private & OPpREFCOUNTED) { |
67566ccd | 533 | switch (type) { |
7934575e GS |
534 | case OP_LEAVESUB: |
535 | case OP_LEAVESUBLV: | |
536 | case OP_LEAVEEVAL: | |
537 | case OP_LEAVE: | |
538 | case OP_SCOPE: | |
539 | case OP_LEAVEWRITE: | |
67566ccd AL |
540 | { |
541 | PADOFFSET refcnt; | |
7934575e | 542 | OP_REFCNT_LOCK; |
4026c95a | 543 | refcnt = OpREFCNT_dec(o); |
7934575e | 544 | OP_REFCNT_UNLOCK; |
bfd0ff22 NC |
545 | if (refcnt) { |
546 | /* Need to find and remove any pattern match ops from the list | |
547 | we maintain for reset(). */ | |
548 | find_and_forget_pmops(o); | |
4026c95a | 549 | return; |
67566ccd | 550 | } |
bfd0ff22 | 551 | } |
7934575e GS |
552 | break; |
553 | default: | |
554 | break; | |
555 | } | |
556 | } | |
557 | ||
f37b8c3f VP |
558 | /* Call the op_free hook if it has been set. Do it now so that it's called |
559 | * at the right time for refcounted ops, but still before all of the kids | |
560 | * are freed. */ | |
561 | CALL_OPFREEHOOK(o); | |
562 | ||
11343788 | 563 | if (o->op_flags & OPf_KIDS) { |
6867be6d | 564 | register OP *kid, *nextkid; |
11343788 | 565 | for (kid = cUNOPo->op_first; kid; kid = nextkid) { |
85e6fe83 | 566 | nextkid = kid->op_sibling; /* Get before next freeing kid */ |
79072805 | 567 | op_free(kid); |
85e6fe83 | 568 | } |
79072805 | 569 | } |
acb36ea4 | 570 | |
fc97af9c NC |
571 | #ifdef PERL_DEBUG_READONLY_OPS |
572 | Slab_to_rw(o); | |
573 | #endif | |
574 | ||
acb36ea4 GS |
575 | /* COP* is not cleared by op_clear() so that we may track line |
576 | * numbers etc even after null() */ | |
cc93af5f RGS |
577 | if (type == OP_NEXTSTATE || type == OP_DBSTATE |
578 | || (type == OP_NULL /* the COP might have been null'ed */ | |
579 | && ((OPCODE)o->op_targ == OP_NEXTSTATE | |
580 | || (OPCODE)o->op_targ == OP_DBSTATE))) { | |
acb36ea4 | 581 | cop_free((COP*)o); |
3235b7a3 | 582 | } |
acb36ea4 | 583 | |
c53f1caa RU |
584 | if (type == OP_NULL) |
585 | type = (OPCODE)o->op_targ; | |
586 | ||
acb36ea4 | 587 | op_clear(o); |
670f3923 DM |
588 | if (o->op_latefree) { |
589 | o->op_latefreed = 1; | |
590 | return; | |
591 | } | |
592 | do_free: | |
238a4c30 | 593 | FreeOp(o); |
4d494880 DM |
594 | #ifdef DEBUG_LEAKING_SCALARS |
595 | if (PL_op == o) | |
5f66b61c | 596 | PL_op = NULL; |
4d494880 | 597 | #endif |
acb36ea4 | 598 | } |
79072805 | 599 | |
93c66552 DM |
600 | void |
601 | Perl_op_clear(pTHX_ OP *o) | |
acb36ea4 | 602 | { |
13137afc | 603 | |
27da23d5 | 604 | dVAR; |
7918f24d NC |
605 | |
606 | PERL_ARGS_ASSERT_OP_CLEAR; | |
607 | ||
eb8433b7 | 608 | #ifdef PERL_MAD |
df31c78c NC |
609 | mad_free(o->op_madprop); |
610 | o->op_madprop = 0; | |
eb8433b7 NC |
611 | #endif |
612 | ||
613 | retry: | |
11343788 | 614 | switch (o->op_type) { |
acb36ea4 | 615 | case OP_NULL: /* Was holding old type, if any. */ |
eb8433b7 | 616 | if (PL_madskills && o->op_targ != OP_NULL) { |
61a59f30 | 617 | o->op_type = (Optype)o->op_targ; |
eb8433b7 NC |
618 | o->op_targ = 0; |
619 | goto retry; | |
620 | } | |
4d193d44 | 621 | case OP_ENTERTRY: |
acb36ea4 | 622 | case OP_ENTEREVAL: /* Was holding hints. */ |
acb36ea4 | 623 | o->op_targ = 0; |
a0d0e21e | 624 | break; |
a6006777 | 625 | default: |
ac4c12e7 | 626 | if (!(o->op_flags & OPf_REF) |
ef69c8fc | 627 | || (PL_check[o->op_type] != Perl_ck_ftst)) |
a6006777 | 628 | break; |
629 | /* FALL THROUGH */ | |
463ee0b2 | 630 | case OP_GVSV: |
79072805 | 631 | case OP_GV: |
a6006777 | 632 | case OP_AELEMFAST: |
93bad3fd | 633 | { |
f7461760 Z |
634 | GV *gv = (o->op_type == OP_GV || o->op_type == OP_GVSV) |
635 | #ifdef USE_ITHREADS | |
636 | && PL_curpad | |
637 | #endif | |
638 | ? cGVOPo_gv : NULL; | |
b327b36f NC |
639 | /* It's possible during global destruction that the GV is freed |
640 | before the optree. Whilst the SvREFCNT_inc is happy to bump from | |
641 | 0 to 1 on a freed SV, the corresponding SvREFCNT_dec from 1 to 0 | |
642 | will trigger an assertion failure, because the entry to sv_clear | |
643 | checks that the scalar is not already freed. A check of for | |
644 | !SvIS_FREED(gv) turns out to be invalid, because during global | |
645 | destruction the reference count can be forced down to zero | |
646 | (with SVf_BREAK set). In which case raising to 1 and then | |
647 | dropping to 0 triggers cleanup before it should happen. I | |
648 | *think* that this might actually be a general, systematic, | |
649 | weakness of the whole idea of SVf_BREAK, in that code *is* | |
650 | allowed to raise and lower references during global destruction, | |
651 | so any *valid* code that happens to do this during global | |
652 | destruction might well trigger premature cleanup. */ | |
653 | bool still_valid = gv && SvREFCNT(gv); | |
654 | ||
655 | if (still_valid) | |
656 | SvREFCNT_inc_simple_void(gv); | |
350de78d | 657 | #ifdef USE_ITHREADS |
6a077020 DM |
658 | if (cPADOPo->op_padix > 0) { |
659 | /* No GvIN_PAD_off(cGVOPo_gv) here, because other references | |
660 | * may still exist on the pad */ | |
661 | pad_swipe(cPADOPo->op_padix, TRUE); | |
662 | cPADOPo->op_padix = 0; | |
663 | } | |
350de78d | 664 | #else |
6a077020 | 665 | SvREFCNT_dec(cSVOPo->op_sv); |
a0714e2c | 666 | cSVOPo->op_sv = NULL; |
350de78d | 667 | #endif |
b327b36f | 668 | if (still_valid) { |
f7461760 Z |
669 | int try_downgrade = SvREFCNT(gv) == 2; |
670 | SvREFCNT_dec(gv); | |
671 | if (try_downgrade) | |
672 | gv_try_downgrade(gv); | |
673 | } | |
6a077020 | 674 | } |
79072805 | 675 | break; |
a1ae71d2 | 676 | case OP_METHOD_NAMED: |
79072805 | 677 | case OP_CONST: |
996c9baa | 678 | case OP_HINTSEVAL: |
11343788 | 679 | SvREFCNT_dec(cSVOPo->op_sv); |
a0714e2c | 680 | cSVOPo->op_sv = NULL; |
3b1c21fa AB |
681 | #ifdef USE_ITHREADS |
682 | /** Bug #15654 | |
683 | Even if op_clear does a pad_free for the target of the op, | |
6a077020 | 684 | pad_free doesn't actually remove the sv that exists in the pad; |
3b1c21fa AB |
685 | instead it lives on. This results in that it could be reused as |
686 | a target later on when the pad was reallocated. | |
687 | **/ | |
688 | if(o->op_targ) { | |
689 | pad_swipe(o->op_targ,1); | |
690 | o->op_targ = 0; | |
691 | } | |
692 | #endif | |
79072805 | 693 | break; |
748a9306 LW |
694 | case OP_GOTO: |
695 | case OP_NEXT: | |
696 | case OP_LAST: | |
697 | case OP_REDO: | |
11343788 | 698 | if (o->op_flags & (OPf_SPECIAL|OPf_STACKED|OPf_KIDS)) |
748a9306 LW |
699 | break; |
700 | /* FALL THROUGH */ | |
a0d0e21e | 701 | case OP_TRANS: |
bb16bae8 | 702 | case OP_TRANSR: |
acb36ea4 | 703 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { |
043e41b8 DM |
704 | #ifdef USE_ITHREADS |
705 | if (cPADOPo->op_padix > 0) { | |
706 | pad_swipe(cPADOPo->op_padix, TRUE); | |
707 | cPADOPo->op_padix = 0; | |
708 | } | |
709 | #else | |
a0ed51b3 | 710 | SvREFCNT_dec(cSVOPo->op_sv); |
a0714e2c | 711 | cSVOPo->op_sv = NULL; |
043e41b8 | 712 | #endif |
acb36ea4 GS |
713 | } |
714 | else { | |
ea71c68d | 715 | PerlMemShared_free(cPVOPo->op_pv); |
bd61b366 | 716 | cPVOPo->op_pv = NULL; |
acb36ea4 | 717 | } |
a0d0e21e LW |
718 | break; |
719 | case OP_SUBST: | |
20e98b0f | 720 | op_free(cPMOPo->op_pmreplrootu.op_pmreplroot); |
971a9dd3 | 721 | goto clear_pmop; |
748a9306 | 722 | case OP_PUSHRE: |
971a9dd3 | 723 | #ifdef USE_ITHREADS |
20e98b0f | 724 | if (cPMOPo->op_pmreplrootu.op_pmtargetoff) { |
dd2155a4 DM |
725 | /* No GvIN_PAD_off here, because other references may still |
726 | * exist on the pad */ | |
20e98b0f | 727 | pad_swipe(cPMOPo->op_pmreplrootu.op_pmtargetoff, TRUE); |
971a9dd3 GS |
728 | } |
729 | #else | |
ad64d0ec | 730 | SvREFCNT_dec(MUTABLE_SV(cPMOPo->op_pmreplrootu.op_pmtargetgv)); |
971a9dd3 GS |
731 | #endif |
732 | /* FALL THROUGH */ | |
a0d0e21e | 733 | case OP_MATCH: |
8782bef2 | 734 | case OP_QR: |
971a9dd3 | 735 | clear_pmop: |
c2b1997a | 736 | forget_pmop(cPMOPo, 1); |
20e98b0f | 737 | cPMOPo->op_pmreplrootu.op_pmreplroot = NULL; |
9cddf794 NC |
738 | /* we use the same protection as the "SAFE" version of the PM_ macros |
739 | * here since sv_clean_all might release some PMOPs | |
5f8cb046 DM |
740 | * after PL_regex_padav has been cleared |
741 | * and the clearing of PL_regex_padav needs to | |
742 | * happen before sv_clean_all | |
743 | */ | |
13137afc AB |
744 | #ifdef USE_ITHREADS |
745 | if(PL_regex_pad) { /* We could be in destruction */ | |
402d2eb1 | 746 | const IV offset = (cPMOPo)->op_pmoffset; |
9cddf794 | 747 | ReREFCNT_dec(PM_GETRE(cPMOPo)); |
402d2eb1 NC |
748 | PL_regex_pad[offset] = &PL_sv_undef; |
749 | sv_catpvn_nomg(PL_regex_pad[0], (const char *)&offset, | |
750 | sizeof(offset)); | |
13137afc | 751 | } |
9cddf794 NC |
752 | #else |
753 | ReREFCNT_dec(PM_GETRE(cPMOPo)); | |
754 | PM_SETRE(cPMOPo, NULL); | |
1eb1540c | 755 | #endif |
13137afc | 756 | |
a0d0e21e | 757 | break; |
79072805 LW |
758 | } |
759 | ||
743e66e6 | 760 | if (o->op_targ > 0) { |
11343788 | 761 | pad_free(o->op_targ); |
743e66e6 GS |
762 | o->op_targ = 0; |
763 | } | |
79072805 LW |
764 | } |
765 | ||
76e3520e | 766 | STATIC void |
3eb57f73 HS |
767 | S_cop_free(pTHX_ COP* cop) |
768 | { | |
7918f24d NC |
769 | PERL_ARGS_ASSERT_COP_FREE; |
770 | ||
05ec9bb3 | 771 | CopFILE_free(cop); |
0453d815 | 772 | if (! specialWARN(cop->cop_warnings)) |
72dc9ed5 | 773 | PerlMemShared_free(cop->cop_warnings); |
20439bc7 | 774 | cophh_free(CopHINTHASH_get(cop)); |
3eb57f73 HS |
775 | } |
776 | ||
c2b1997a | 777 | STATIC void |
c4bd3ae5 NC |
778 | S_forget_pmop(pTHX_ PMOP *const o |
779 | #ifdef USE_ITHREADS | |
780 | , U32 flags | |
781 | #endif | |
782 | ) | |
c2b1997a NC |
783 | { |
784 | HV * const pmstash = PmopSTASH(o); | |
7918f24d NC |
785 | |
786 | PERL_ARGS_ASSERT_FORGET_PMOP; | |
787 | ||
e39a6381 | 788 | if (pmstash && !SvIS_FREED(pmstash) && SvMAGICAL(pmstash)) { |
ad64d0ec | 789 | MAGIC * const mg = mg_find((const SV *)pmstash, PERL_MAGIC_symtab); |
c2b1997a NC |
790 | if (mg) { |
791 | PMOP **const array = (PMOP**) mg->mg_ptr; | |
792 | U32 count = mg->mg_len / sizeof(PMOP**); | |
793 | U32 i = count; | |
794 | ||
795 | while (i--) { | |
796 | if (array[i] == o) { | |
797 | /* Found it. Move the entry at the end to overwrite it. */ | |
798 | array[i] = array[--count]; | |
799 | mg->mg_len = count * sizeof(PMOP**); | |
800 | /* Could realloc smaller at this point always, but probably | |
801 | not worth it. Probably worth free()ing if we're the | |
802 | last. */ | |
803 | if(!count) { | |
804 | Safefree(mg->mg_ptr); | |
805 | mg->mg_ptr = NULL; | |
806 | } | |
807 | break; | |
808 | } | |
809 | } | |
810 | } | |
811 | } | |
1cdf7faf NC |
812 | if (PL_curpm == o) |
813 | PL_curpm = NULL; | |
c4bd3ae5 | 814 | #ifdef USE_ITHREADS |
c2b1997a NC |
815 | if (flags) |
816 | PmopSTASH_free(o); | |
c4bd3ae5 | 817 | #endif |
c2b1997a NC |
818 | } |
819 | ||
bfd0ff22 NC |
820 | STATIC void |
821 | S_find_and_forget_pmops(pTHX_ OP *o) | |
822 | { | |
7918f24d NC |
823 | PERL_ARGS_ASSERT_FIND_AND_FORGET_PMOPS; |
824 | ||
bfd0ff22 NC |
825 | if (o->op_flags & OPf_KIDS) { |
826 | OP *kid = cUNOPo->op_first; | |
827 | while (kid) { | |
828 | switch (kid->op_type) { | |
829 | case OP_SUBST: | |
830 | case OP_PUSHRE: | |
831 | case OP_MATCH: | |
832 | case OP_QR: | |
833 | forget_pmop((PMOP*)kid, 0); | |
834 | } | |
835 | find_and_forget_pmops(kid); | |
836 | kid = kid->op_sibling; | |
837 | } | |
838 | } | |
839 | } | |
840 | ||
93c66552 DM |
841 | void |
842 | Perl_op_null(pTHX_ OP *o) | |
8990e307 | 843 | { |
27da23d5 | 844 | dVAR; |
7918f24d NC |
845 | |
846 | PERL_ARGS_ASSERT_OP_NULL; | |
847 | ||
acb36ea4 GS |
848 | if (o->op_type == OP_NULL) |
849 | return; | |
eb8433b7 NC |
850 | if (!PL_madskills) |
851 | op_clear(o); | |
11343788 MB |
852 | o->op_targ = o->op_type; |
853 | o->op_type = OP_NULL; | |
22c35a8c | 854 | o->op_ppaddr = PL_ppaddr[OP_NULL]; |
8990e307 LW |
855 | } |
856 | ||
4026c95a SH |
857 | void |
858 | Perl_op_refcnt_lock(pTHX) | |
859 | { | |
27da23d5 | 860 | dVAR; |
96a5add6 | 861 | PERL_UNUSED_CONTEXT; |
4026c95a SH |
862 | OP_REFCNT_LOCK; |
863 | } | |
864 | ||
865 | void | |
866 | Perl_op_refcnt_unlock(pTHX) | |
867 | { | |
27da23d5 | 868 | dVAR; |
96a5add6 | 869 | PERL_UNUSED_CONTEXT; |
4026c95a SH |
870 | OP_REFCNT_UNLOCK; |
871 | } | |
872 | ||
79072805 LW |
873 | /* Contextualizers */ |
874 | ||
d9088386 Z |
875 | /* |
876 | =for apidoc Am|OP *|op_contextualize|OP *o|I32 context | |
877 | ||
878 | Applies a syntactic context to an op tree representing an expression. | |
879 | I<o> is the op tree, and I<context> must be C<G_SCALAR>, C<G_ARRAY>, | |
880 | or C<G_VOID> to specify the context to apply. The modified op tree | |
881 | is returned. | |
882 | ||
883 | =cut | |
884 | */ | |
885 | ||
886 | OP * | |
887 | Perl_op_contextualize(pTHX_ OP *o, I32 context) | |
888 | { | |
889 | PERL_ARGS_ASSERT_OP_CONTEXTUALIZE; | |
890 | switch (context) { | |
891 | case G_SCALAR: return scalar(o); | |
892 | case G_ARRAY: return list(o); | |
893 | case G_VOID: return scalarvoid(o); | |
894 | default: | |
5637ef5b NC |
895 | Perl_croak(aTHX_ "panic: op_contextualize bad context %ld", |
896 | (long) context); | |
d9088386 Z |
897 | return o; |
898 | } | |
899 | } | |
900 | ||
5983a79d BM |
901 | /* |
902 | =head1 Optree Manipulation Functions | |
79072805 | 903 | |
5983a79d BM |
904 | =for apidoc Am|OP*|op_linklist|OP *o |
905 | This function is the implementation of the L</LINKLIST> macro. It should | |
906 | not be called directly. | |
907 | ||
908 | =cut | |
909 | */ | |
910 | ||
911 | OP * | |
912 | Perl_op_linklist(pTHX_ OP *o) | |
79072805 | 913 | { |
3edf23ff | 914 | OP *first; |
79072805 | 915 | |
5983a79d | 916 | PERL_ARGS_ASSERT_OP_LINKLIST; |
7918f24d | 917 | |
11343788 MB |
918 | if (o->op_next) |
919 | return o->op_next; | |
79072805 LW |
920 | |
921 | /* establish postfix order */ | |
3edf23ff AL |
922 | first = cUNOPo->op_first; |
923 | if (first) { | |
6867be6d | 924 | register OP *kid; |
3edf23ff AL |
925 | o->op_next = LINKLIST(first); |
926 | kid = first; | |
927 | for (;;) { | |
928 | if (kid->op_sibling) { | |
79072805 | 929 | kid->op_next = LINKLIST(kid->op_sibling); |
3edf23ff AL |
930 | kid = kid->op_sibling; |
931 | } else { | |
11343788 | 932 | kid->op_next = o; |
3edf23ff AL |
933 | break; |
934 | } | |
79072805 LW |
935 | } |
936 | } | |
937 | else | |
11343788 | 938 | o->op_next = o; |
79072805 | 939 | |
11343788 | 940 | return o->op_next; |
79072805 LW |
941 | } |
942 | ||
1f676739 | 943 | static OP * |
2dd5337b | 944 | S_scalarkids(pTHX_ OP *o) |
79072805 | 945 | { |
11343788 | 946 | if (o && o->op_flags & OPf_KIDS) { |
bfed75c6 | 947 | OP *kid; |
11343788 | 948 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
949 | scalar(kid); |
950 | } | |
11343788 | 951 | return o; |
79072805 LW |
952 | } |
953 | ||
76e3520e | 954 | STATIC OP * |
cea2e8a9 | 955 | S_scalarboolean(pTHX_ OP *o) |
8990e307 | 956 | { |
97aff369 | 957 | dVAR; |
7918f24d NC |
958 | |
959 | PERL_ARGS_ASSERT_SCALARBOOLEAN; | |
960 | ||
6b7c6d95 FC |
961 | if (o->op_type == OP_SASSIGN && cBINOPo->op_first->op_type == OP_CONST |
962 | && !(cBINOPo->op_first->op_flags & OPf_SPECIAL)) { | |
d008e5eb | 963 | if (ckWARN(WARN_SYNTAX)) { |
6867be6d | 964 | const line_t oldline = CopLINE(PL_curcop); |
a0d0e21e | 965 | |
53a7735b DM |
966 | if (PL_parser && PL_parser->copline != NOLINE) |
967 | CopLINE_set(PL_curcop, PL_parser->copline); | |
9014280d | 968 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Found = in conditional, should be =="); |
57843af0 | 969 | CopLINE_set(PL_curcop, oldline); |
d008e5eb | 970 | } |
a0d0e21e | 971 | } |
11343788 | 972 | return scalar(o); |
8990e307 LW |
973 | } |
974 | ||
975 | OP * | |
864dbfa3 | 976 | Perl_scalar(pTHX_ OP *o) |
79072805 | 977 | { |
27da23d5 | 978 | dVAR; |
79072805 LW |
979 | OP *kid; |
980 | ||
a0d0e21e | 981 | /* assumes no premature commitment */ |
13765c85 DM |
982 | if (!o || (PL_parser && PL_parser->error_count) |
983 | || (o->op_flags & OPf_WANT) | |
5dc0d613 | 984 | || o->op_type == OP_RETURN) |
7e363e51 | 985 | { |
11343788 | 986 | return o; |
7e363e51 | 987 | } |
79072805 | 988 | |
5dc0d613 | 989 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_SCALAR; |
79072805 | 990 | |
11343788 | 991 | switch (o->op_type) { |
79072805 | 992 | case OP_REPEAT: |
11343788 | 993 | scalar(cBINOPo->op_first); |
8990e307 | 994 | break; |
79072805 LW |
995 | case OP_OR: |
996 | case OP_AND: | |
997 | case OP_COND_EXPR: | |
11343788 | 998 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
8990e307 | 999 | scalar(kid); |
79072805 | 1000 | break; |
a0d0e21e | 1001 | /* FALL THROUGH */ |
a6d8037e | 1002 | case OP_SPLIT: |
79072805 | 1003 | case OP_MATCH: |
8782bef2 | 1004 | case OP_QR: |
79072805 LW |
1005 | case OP_SUBST: |
1006 | case OP_NULL: | |
8990e307 | 1007 | default: |
11343788 MB |
1008 | if (o->op_flags & OPf_KIDS) { |
1009 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) | |
8990e307 LW |
1010 | scalar(kid); |
1011 | } | |
79072805 LW |
1012 | break; |
1013 | case OP_LEAVE: | |
1014 | case OP_LEAVETRY: | |
5dc0d613 | 1015 | kid = cLISTOPo->op_first; |
54310121 | 1016 | scalar(kid); |
25b991bf VP |
1017 | kid = kid->op_sibling; |
1018 | do_kids: | |
1019 | while (kid) { | |
1020 | OP *sib = kid->op_sibling; | |
c08f093b VP |
1021 | if (sib && kid->op_type != OP_LEAVEWHEN) |
1022 | scalarvoid(kid); | |
1023 | else | |
54310121 | 1024 | scalar(kid); |
25b991bf | 1025 | kid = sib; |
54310121 | 1026 | } |
11206fdd | 1027 | PL_curcop = &PL_compiling; |
54310121 | 1028 | break; |
748a9306 | 1029 | case OP_SCOPE: |
79072805 | 1030 | case OP_LINESEQ: |
8990e307 | 1031 | case OP_LIST: |
25b991bf VP |
1032 | kid = cLISTOPo->op_first; |
1033 | goto do_kids; | |
a801c63c | 1034 | case OP_SORT: |
a2a5de95 | 1035 | Perl_ck_warner(aTHX_ packWARN(WARN_VOID), "Useless use of sort in scalar context"); |
553e7bb0 | 1036 | break; |
79072805 | 1037 | } |
11343788 | 1038 | return o; |
79072805 LW |
1039 | } |
1040 | ||
1041 | OP * | |
864dbfa3 | 1042 | Perl_scalarvoid(pTHX_ OP *o) |
79072805 | 1043 | { |
27da23d5 | 1044 | dVAR; |
79072805 | 1045 | OP *kid; |
c445ea15 | 1046 | const char* useless = NULL; |
34ee6772 | 1047 | U32 useless_is_utf8 = 0; |
8990e307 | 1048 | SV* sv; |
2ebea0a1 GS |
1049 | U8 want; |
1050 | ||
7918f24d NC |
1051 | PERL_ARGS_ASSERT_SCALARVOID; |
1052 | ||
eb8433b7 NC |
1053 | /* trailing mad null ops don't count as "there" for void processing */ |
1054 | if (PL_madskills && | |
1055 | o->op_type != OP_NULL && | |
1056 | o->op_sibling && | |
1057 | o->op_sibling->op_type == OP_NULL) | |
1058 | { | |
1059 | OP *sib; | |
1060 | for (sib = o->op_sibling; | |
1061 | sib && sib->op_type == OP_NULL; | |
1062 | sib = sib->op_sibling) ; | |
1063 | ||
1064 | if (!sib) | |
1065 | return o; | |
1066 | } | |
1067 | ||
acb36ea4 | 1068 | if (o->op_type == OP_NEXTSTATE |
acb36ea4 GS |
1069 | || o->op_type == OP_DBSTATE |
1070 | || (o->op_type == OP_NULL && (o->op_targ == OP_NEXTSTATE | |
acb36ea4 | 1071 | || o->op_targ == OP_DBSTATE))) |
2ebea0a1 | 1072 | PL_curcop = (COP*)o; /* for warning below */ |
79072805 | 1073 | |
54310121 | 1074 | /* assumes no premature commitment */ |
2ebea0a1 | 1075 | want = o->op_flags & OPf_WANT; |
13765c85 DM |
1076 | if ((want && want != OPf_WANT_SCALAR) |
1077 | || (PL_parser && PL_parser->error_count) | |
25b991bf | 1078 | || o->op_type == OP_RETURN || o->op_type == OP_REQUIRE || o->op_type == OP_LEAVEWHEN) |
7e363e51 | 1079 | { |
11343788 | 1080 | return o; |
7e363e51 | 1081 | } |
79072805 | 1082 | |
b162f9ea | 1083 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
1084 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
1085 | { | |
b162f9ea | 1086 | return scalar(o); /* As if inside SASSIGN */ |
7e363e51 | 1087 | } |
1c846c1f | 1088 | |
5dc0d613 | 1089 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_VOID; |
79072805 | 1090 | |
11343788 | 1091 | switch (o->op_type) { |
79072805 | 1092 | default: |
22c35a8c | 1093 | if (!(PL_opargs[o->op_type] & OA_FOLDCONST)) |
8990e307 | 1094 | break; |
36477c24 | 1095 | /* FALL THROUGH */ |
1096 | case OP_REPEAT: | |
11343788 | 1097 | if (o->op_flags & OPf_STACKED) |
8990e307 | 1098 | break; |
5d82c453 GA |
1099 | goto func_ops; |
1100 | case OP_SUBSTR: | |
1101 | if (o->op_private == 4) | |
1102 | break; | |
8990e307 LW |
1103 | /* FALL THROUGH */ |
1104 | case OP_GVSV: | |
1105 | case OP_WANTARRAY: | |
1106 | case OP_GV: | |
74295f0b | 1107 | case OP_SMARTMATCH: |
8990e307 LW |
1108 | case OP_PADSV: |
1109 | case OP_PADAV: | |
1110 | case OP_PADHV: | |
1111 | case OP_PADANY: | |
1112 | case OP_AV2ARYLEN: | |
8990e307 | 1113 | case OP_REF: |
a0d0e21e LW |
1114 | case OP_REFGEN: |
1115 | case OP_SREFGEN: | |
8990e307 LW |
1116 | case OP_DEFINED: |
1117 | case OP_HEX: | |
1118 | case OP_OCT: | |
1119 | case OP_LENGTH: | |
8990e307 LW |
1120 | case OP_VEC: |
1121 | case OP_INDEX: | |
1122 | case OP_RINDEX: | |
1123 | case OP_SPRINTF: | |
1124 | case OP_AELEM: | |
1125 | case OP_AELEMFAST: | |
93bad3fd | 1126 | case OP_AELEMFAST_LEX: |
8990e307 | 1127 | case OP_ASLICE: |
8990e307 LW |
1128 | case OP_HELEM: |
1129 | case OP_HSLICE: | |
1130 | case OP_UNPACK: | |
1131 | case OP_PACK: | |
8990e307 LW |
1132 | case OP_JOIN: |
1133 | case OP_LSLICE: | |
1134 | case OP_ANONLIST: | |
1135 | case OP_ANONHASH: | |
1136 | case OP_SORT: | |
1137 | case OP_REVERSE: | |
1138 | case OP_RANGE: | |
1139 | case OP_FLIP: | |
1140 | case OP_FLOP: | |
1141 | case OP_CALLER: | |
1142 | case OP_FILENO: | |
1143 | case OP_EOF: | |
1144 | case OP_TELL: | |
1145 | case OP_GETSOCKNAME: | |
1146 | case OP_GETPEERNAME: | |
1147 | case OP_READLINK: | |
1148 | case OP_TELLDIR: | |
1149 | case OP_GETPPID: | |
1150 | case OP_GETPGRP: | |
1151 | case OP_GETPRIORITY: | |
1152 | case OP_TIME: | |
1153 | case OP_TMS: | |
1154 | case OP_LOCALTIME: | |
1155 | case OP_GMTIME: | |
1156 | case OP_GHBYNAME: | |
1157 | case OP_GHBYADDR: | |
1158 | case OP_GHOSTENT: | |
1159 | case OP_GNBYNAME: | |
1160 | case OP_GNBYADDR: | |
1161 | case OP_GNETENT: | |
1162 | case OP_GPBYNAME: | |
1163 | case OP_GPBYNUMBER: | |
1164 | case OP_GPROTOENT: | |
1165 | case OP_GSBYNAME: | |
1166 | case OP_GSBYPORT: | |
1167 | case OP_GSERVENT: | |
1168 | case OP_GPWNAM: | |
1169 | case OP_GPWUID: | |
1170 | case OP_GGRNAM: | |
1171 | case OP_GGRGID: | |
1172 | case OP_GETLOGIN: | |
78e1b766 | 1173 | case OP_PROTOTYPE: |
703227f5 | 1174 | case OP_RUNCV: |
5d82c453 | 1175 | func_ops: |
64aac5a9 | 1176 | if (!(o->op_private & (OPpLVAL_INTRO|OPpOUR_INTRO))) |
74295f0b | 1177 | /* Otherwise it's "Useless use of grep iterator" */ |
f5df4782 | 1178 | useless = OP_DESC(o); |
75068674 RGS |
1179 | break; |
1180 | ||
1181 | case OP_SPLIT: | |
1182 | kid = cLISTOPo->op_first; | |
1183 | if (kid && kid->op_type == OP_PUSHRE | |
1184 | #ifdef USE_ITHREADS | |
1185 | && !((PMOP*)kid)->op_pmreplrootu.op_pmtargetoff) | |
1186 | #else | |
1187 | && !((PMOP*)kid)->op_pmreplrootu.op_pmtargetgv) | |
1188 | #endif | |
1189 | useless = OP_DESC(o); | |
8990e307 LW |
1190 | break; |
1191 | ||
9f82cd5f YST |
1192 | case OP_NOT: |
1193 | kid = cUNOPo->op_first; | |
1194 | if (kid->op_type != OP_MATCH && kid->op_type != OP_SUBST && | |
bb16bae8 | 1195 | kid->op_type != OP_TRANS && kid->op_type != OP_TRANSR) { |
9f82cd5f YST |
1196 | goto func_ops; |
1197 | } | |
1198 | useless = "negative pattern binding (!~)"; | |
1199 | break; | |
1200 | ||
4f4d7508 DC |
1201 | case OP_SUBST: |
1202 | if (cPMOPo->op_pmflags & PMf_NONDESTRUCT) | |
8db9069c | 1203 | useless = "non-destructive substitution (s///r)"; |
4f4d7508 DC |
1204 | break; |
1205 | ||
bb16bae8 FC |
1206 | case OP_TRANSR: |
1207 | useless = "non-destructive transliteration (tr///r)"; | |
1208 | break; | |
1209 | ||
8990e307 LW |
1210 | case OP_RV2GV: |
1211 | case OP_RV2SV: | |
1212 | case OP_RV2AV: | |
1213 | case OP_RV2HV: | |
192587c2 | 1214 | if (!(o->op_private & (OPpLVAL_INTRO|OPpOUR_INTRO)) && |
11343788 | 1215 | (!o->op_sibling || o->op_sibling->op_type != OP_READLINE)) |
8990e307 LW |
1216 | useless = "a variable"; |
1217 | break; | |
79072805 LW |
1218 | |
1219 | case OP_CONST: | |
7766f137 | 1220 | sv = cSVOPo_sv; |
7a52d87a GS |
1221 | if (cSVOPo->op_private & OPpCONST_STRICT) |
1222 | no_bareword_allowed(o); | |
1223 | else { | |
d008e5eb | 1224 | if (ckWARN(WARN_VOID)) { |
e7fec78e | 1225 | /* don't warn on optimised away booleans, eg |
b5a930ec | 1226 | * use constant Foo, 5; Foo || print; */ |
e7fec78e | 1227 | if (cSVOPo->op_private & OPpCONST_SHORTCIRCUIT) |
d4c19fe8 | 1228 | useless = NULL; |
960b4253 MG |
1229 | /* the constants 0 and 1 are permitted as they are |
1230 | conventionally used as dummies in constructs like | |
1231 | 1 while some_condition_with_side_effects; */ | |
e7fec78e | 1232 | else if (SvNIOK(sv) && (SvNV(sv) == 0.0 || SvNV(sv) == 1.0)) |
d4c19fe8 | 1233 | useless = NULL; |
d008e5eb | 1234 | else if (SvPOK(sv)) { |
a52fe3ac A |
1235 | /* perl4's way of mixing documentation and code |
1236 | (before the invention of POD) was based on a | |
1237 | trick to mix nroff and perl code. The trick was | |
1238 | built upon these three nroff macros being used in | |
1239 | void context. The pink camel has the details in | |
1240 | the script wrapman near page 319. */ | |
6136c704 AL |
1241 | const char * const maybe_macro = SvPVX_const(sv); |
1242 | if (strnEQ(maybe_macro, "di", 2) || | |
1243 | strnEQ(maybe_macro, "ds", 2) || | |
1244 | strnEQ(maybe_macro, "ig", 2)) | |
d4c19fe8 | 1245 | useless = NULL; |
919f76a3 | 1246 | else { |
d3bcd21f | 1247 | SV * const dsv = newSVpvs(""); |
919f76a3 RGS |
1248 | SV* msv = sv_2mortal(Perl_newSVpvf(aTHX_ |
1249 | "a constant (%s)", | |
1250 | pv_pretty(dsv, maybe_macro, SvCUR(sv), 32, NULL, NULL, | |
1251 | PERL_PV_PRETTY_DUMP | PERL_PV_ESCAPE_NOCLEAR | PERL_PV_ESCAPE_UNI_DETECT ))); | |
1252 | SvREFCNT_dec(dsv); | |
1253 | useless = SvPV_nolen(msv); | |
1254 | useless_is_utf8 = SvUTF8(msv); | |
1255 | } | |
d008e5eb | 1256 | } |
919f76a3 RGS |
1257 | else if (SvOK(sv)) { |
1258 | SV* msv = sv_2mortal(Perl_newSVpvf(aTHX_ | |
1259 | "a constant (%"SVf")", sv)); | |
1260 | useless = SvPV_nolen(msv); | |
1261 | } | |
1262 | else | |
1263 | useless = "a constant (undef)"; | |
8990e307 LW |
1264 | } |
1265 | } | |
93c66552 | 1266 | op_null(o); /* don't execute or even remember it */ |
79072805 LW |
1267 | break; |
1268 | ||
1269 | case OP_POSTINC: | |
11343788 | 1270 | o->op_type = OP_PREINC; /* pre-increment is faster */ |
22c35a8c | 1271 | o->op_ppaddr = PL_ppaddr[OP_PREINC]; |
79072805 LW |
1272 | break; |
1273 | ||
1274 | case OP_POSTDEC: | |
11343788 | 1275 | o->op_type = OP_PREDEC; /* pre-decrement is faster */ |
22c35a8c | 1276 | o->op_ppaddr = PL_ppaddr[OP_PREDEC]; |
79072805 LW |
1277 | break; |
1278 | ||
679d6c4e HS |
1279 | case OP_I_POSTINC: |
1280 | o->op_type = OP_I_PREINC; /* pre-increment is faster */ | |
1281 | o->op_ppaddr = PL_ppaddr[OP_I_PREINC]; | |
1282 | break; | |
1283 | ||
1284 | case OP_I_POSTDEC: | |
1285 | o->op_type = OP_I_PREDEC; /* pre-decrement is faster */ | |
1286 | o->op_ppaddr = PL_ppaddr[OP_I_PREDEC]; | |
1287 | break; | |
1288 | ||
f2f8fd84 GG |
1289 | case OP_SASSIGN: { |
1290 | OP *rv2gv; | |
1291 | UNOP *refgen, *rv2cv; | |
1292 | LISTOP *exlist; | |
1293 | ||
1294 | if ((o->op_private & ~OPpASSIGN_BACKWARDS) != 2) | |
1295 | break; | |
1296 | ||
1297 | rv2gv = ((BINOP *)o)->op_last; | |
1298 | if (!rv2gv || rv2gv->op_type != OP_RV2GV) | |
1299 | break; | |
1300 | ||
1301 | refgen = (UNOP *)((BINOP *)o)->op_first; | |
1302 | ||
1303 | if (!refgen || refgen->op_type != OP_REFGEN) | |
1304 | break; | |
1305 | ||
1306 | exlist = (LISTOP *)refgen->op_first; | |
1307 | if (!exlist || exlist->op_type != OP_NULL | |
1308 | || exlist->op_targ != OP_LIST) | |
1309 | break; | |
1310 | ||
1311 | if (exlist->op_first->op_type != OP_PUSHMARK) | |
1312 | break; | |
1313 | ||
1314 | rv2cv = (UNOP*)exlist->op_last; | |
1315 | ||
1316 | if (rv2cv->op_type != OP_RV2CV) | |
1317 | break; | |
1318 | ||
1319 | assert ((rv2gv->op_private & OPpDONT_INIT_GV) == 0); | |
1320 | assert ((o->op_private & OPpASSIGN_CV_TO_GV) == 0); | |
1321 | assert ((rv2cv->op_private & OPpMAY_RETURN_CONSTANT) == 0); | |
1322 | ||
1323 | o->op_private |= OPpASSIGN_CV_TO_GV; | |
1324 | rv2gv->op_private |= OPpDONT_INIT_GV; | |
1325 | rv2cv->op_private |= OPpMAY_RETURN_CONSTANT; | |
1326 | ||
1327 | break; | |
1328 | } | |
1329 | ||
540dd770 GG |
1330 | case OP_AASSIGN: { |
1331 | inplace_aassign(o); | |
1332 | break; | |
1333 | } | |
1334 | ||
79072805 LW |
1335 | case OP_OR: |
1336 | case OP_AND: | |
edbe35ea VP |
1337 | kid = cLOGOPo->op_first; |
1338 | if (kid->op_type == OP_NOT | |
1339 | && (kid->op_flags & OPf_KIDS) | |
1340 | && !PL_madskills) { | |
1341 | if (o->op_type == OP_AND) { | |
1342 | o->op_type = OP_OR; | |
1343 | o->op_ppaddr = PL_ppaddr[OP_OR]; | |
1344 | } else { | |
1345 | o->op_type = OP_AND; | |
1346 | o->op_ppaddr = PL_ppaddr[OP_AND]; | |
1347 | } | |
1348 | op_null(kid); | |
1349 | } | |
1350 | ||
c963b151 | 1351 | case OP_DOR: |
79072805 | 1352 | case OP_COND_EXPR: |
0d863452 RH |
1353 | case OP_ENTERGIVEN: |
1354 | case OP_ENTERWHEN: | |
11343788 | 1355 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
1356 | scalarvoid(kid); |
1357 | break; | |
5aabfad6 | 1358 | |
a0d0e21e | 1359 | case OP_NULL: |
11343788 | 1360 | if (o->op_flags & OPf_STACKED) |
a0d0e21e | 1361 | break; |
5aabfad6 | 1362 | /* FALL THROUGH */ |
2ebea0a1 GS |
1363 | case OP_NEXTSTATE: |
1364 | case OP_DBSTATE: | |
79072805 LW |
1365 | case OP_ENTERTRY: |
1366 | case OP_ENTER: | |
11343788 | 1367 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1368 | break; |
54310121 | 1369 | /* FALL THROUGH */ |
463ee0b2 | 1370 | case OP_SCOPE: |
79072805 LW |
1371 | case OP_LEAVE: |
1372 | case OP_LEAVETRY: | |
a0d0e21e | 1373 | case OP_LEAVELOOP: |
79072805 | 1374 | case OP_LINESEQ: |
79072805 | 1375 | case OP_LIST: |
0d863452 RH |
1376 | case OP_LEAVEGIVEN: |
1377 | case OP_LEAVEWHEN: | |
11343788 | 1378 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
1379 | scalarvoid(kid); |
1380 | break; | |
c90c0ff4 | 1381 | case OP_ENTEREVAL: |
5196be3e | 1382 | scalarkids(o); |
c90c0ff4 | 1383 | break; |
d6483035 | 1384 | case OP_SCALAR: |
5196be3e | 1385 | return scalar(o); |
79072805 | 1386 | } |
a2a5de95 | 1387 | if (useless) |
34ee6772 BF |
1388 | Perl_ck_warner(aTHX_ packWARN(WARN_VOID), "Useless use of %"SVf" in void context", |
1389 | newSVpvn_flags(useless, strlen(useless), | |
1390 | SVs_TEMP | ( useless_is_utf8 ? SVf_UTF8 : 0 ))); | |
11343788 | 1391 | return o; |
79072805 LW |
1392 | } |
1393 | ||
1f676739 | 1394 | static OP * |
412da003 | 1395 | S_listkids(pTHX_ OP *o) |
79072805 | 1396 | { |
11343788 | 1397 | if (o && o->op_flags & OPf_KIDS) { |
6867be6d | 1398 | OP *kid; |
11343788 | 1399 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
1400 | list(kid); |
1401 | } | |
11343788 | 1402 | return o; |
79072805 LW |
1403 | } |
1404 | ||
1405 | OP * | |
864dbfa3 | 1406 | Perl_list(pTHX_ OP *o) |
79072805 | 1407 | { |
27da23d5 | 1408 | dVAR; |
79072805 LW |
1409 | OP *kid; |
1410 | ||
a0d0e21e | 1411 | /* assumes no premature commitment */ |
13765c85 DM |
1412 | if (!o || (o->op_flags & OPf_WANT) |
1413 | || (PL_parser && PL_parser->error_count) | |
5dc0d613 | 1414 | || o->op_type == OP_RETURN) |
7e363e51 | 1415 | { |
11343788 | 1416 | return o; |
7e363e51 | 1417 | } |
79072805 | 1418 | |
b162f9ea | 1419 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
1420 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
1421 | { | |
b162f9ea | 1422 | return o; /* As if inside SASSIGN */ |
7e363e51 | 1423 | } |
1c846c1f | 1424 | |
5dc0d613 | 1425 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_LIST; |
79072805 | 1426 | |
11343788 | 1427 | switch (o->op_type) { |
79072805 LW |
1428 | case OP_FLOP: |
1429 | case OP_REPEAT: | |
11343788 | 1430 | list(cBINOPo->op_first); |
79072805 LW |
1431 | break; |
1432 | case OP_OR: | |
1433 | case OP_AND: | |
1434 | case OP_COND_EXPR: | |
11343788 | 1435 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
1436 | list(kid); |
1437 | break; | |
1438 | default: | |
1439 | case OP_MATCH: | |
8782bef2 | 1440 | case OP_QR: |
79072805 LW |
1441 | case OP_SUBST: |
1442 | case OP_NULL: | |
11343788 | 1443 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1444 | break; |
11343788 MB |
1445 | if (!o->op_next && cUNOPo->op_first->op_type == OP_FLOP) { |
1446 | list(cBINOPo->op_first); | |
1447 | return gen_constant_list(o); | |
79072805 LW |
1448 | } |
1449 | case OP_LIST: | |
11343788 | 1450 | listkids(o); |
79072805 LW |
1451 | break; |
1452 | case OP_LEAVE: | |
1453 | case OP_LEAVETRY: | |
5dc0d613 | 1454 | kid = cLISTOPo->op_first; |
54310121 | 1455 | list(kid); |
25b991bf VP |
1456 | kid = kid->op_sibling; |
1457 | do_kids: | |
1458 | while (kid) { | |
1459 | OP *sib = kid->op_sibling; | |
c08f093b VP |
1460 | if (sib && kid->op_type != OP_LEAVEWHEN) |
1461 | scalarvoid(kid); | |
1462 | else | |
54310121 | 1463 | list(kid); |
25b991bf | 1464 | kid = sib; |
54310121 | 1465 | } |
11206fdd | 1466 | PL_curcop = &PL_compiling; |
54310121 | 1467 | break; |
748a9306 | 1468 | case OP_SCOPE: |
79072805 | 1469 | case OP_LINESEQ: |
25b991bf VP |
1470 | kid = cLISTOPo->op_first; |
1471 | goto do_kids; | |
79072805 | 1472 | } |
11343788 | 1473 | return o; |
79072805 LW |
1474 | } |
1475 | ||
1f676739 | 1476 | static OP * |
2dd5337b | 1477 | S_scalarseq(pTHX_ OP *o) |
79072805 | 1478 | { |
97aff369 | 1479 | dVAR; |
11343788 | 1480 | if (o) { |
1496a290 AL |
1481 | const OPCODE type = o->op_type; |
1482 | ||
1483 | if (type == OP_LINESEQ || type == OP_SCOPE || | |
1484 | type == OP_LEAVE || type == OP_LEAVETRY) | |
463ee0b2 | 1485 | { |
6867be6d | 1486 | OP *kid; |
11343788 | 1487 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
ed6116ce | 1488 | if (kid->op_sibling) { |
463ee0b2 | 1489 | scalarvoid(kid); |
ed6116ce | 1490 | } |
463ee0b2 | 1491 | } |
3280af22 | 1492 | PL_curcop = &PL_compiling; |
79072805 | 1493 | } |
11343788 | 1494 | o->op_flags &= ~OPf_PARENS; |
3280af22 | 1495 | if (PL_hints & HINT_BLOCK_SCOPE) |
11343788 | 1496 | o->op_flags |= OPf_PARENS; |
79072805 | 1497 | } |
8990e307 | 1498 | else |
11343788 MB |
1499 | o = newOP(OP_STUB, 0); |
1500 | return o; | |
79072805 LW |
1501 | } |
1502 | ||
76e3520e | 1503 | STATIC OP * |
cea2e8a9 | 1504 | S_modkids(pTHX_ OP *o, I32 type) |
79072805 | 1505 | { |
11343788 | 1506 | if (o && o->op_flags & OPf_KIDS) { |
6867be6d | 1507 | OP *kid; |
11343788 | 1508 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
3ad73efd | 1509 | op_lvalue(kid, type); |
79072805 | 1510 | } |
11343788 | 1511 | return o; |
79072805 LW |
1512 | } |
1513 | ||
3ad73efd | 1514 | /* |
d164302a GG |
1515 | =for apidoc finalize_optree |
1516 | ||
1517 | This function finalizes the optree. Should be called directly after | |
1518 | the complete optree is built. It does some additional | |
1519 | checking which can't be done in the normal ck_xxx functions and makes | |
1520 | the tree thread-safe. | |
1521 | ||
1522 | =cut | |
1523 | */ | |
1524 | void | |
1525 | Perl_finalize_optree(pTHX_ OP* o) | |
1526 | { | |
1527 | PERL_ARGS_ASSERT_FINALIZE_OPTREE; | |
1528 | ||
1529 | ENTER; | |
1530 | SAVEVPTR(PL_curcop); | |
1531 | ||
1532 | finalize_op(o); | |
1533 | ||
1534 | LEAVE; | |
1535 | } | |
1536 | ||
60dde6b2 | 1537 | STATIC void |
d164302a GG |
1538 | S_finalize_op(pTHX_ OP* o) |
1539 | { | |
1540 | PERL_ARGS_ASSERT_FINALIZE_OP; | |
1541 | ||
1542 | #if defined(PERL_MAD) && defined(USE_ITHREADS) | |
1543 | { | |
1544 | /* Make sure mad ops are also thread-safe */ | |
1545 | MADPROP *mp = o->op_madprop; | |
1546 | while (mp) { | |
1547 | if (mp->mad_type == MAD_OP && mp->mad_vlen) { | |
1548 | OP *prop_op = (OP *) mp->mad_val; | |
1549 | /* We only need "Relocate sv to the pad for thread safety.", but this | |
1550 | easiest way to make sure it traverses everything */ | |
4dc304e0 FC |
1551 | if (prop_op->op_type == OP_CONST) |
1552 | cSVOPx(prop_op)->op_private &= ~OPpCONST_STRICT; | |
d164302a GG |
1553 | finalize_op(prop_op); |
1554 | } | |
1555 | mp = mp->mad_next; | |
1556 | } | |
1557 | } | |
1558 | #endif | |
1559 | ||
1560 | switch (o->op_type) { | |
1561 | case OP_NEXTSTATE: | |
1562 | case OP_DBSTATE: | |
1563 | PL_curcop = ((COP*)o); /* for warnings */ | |
1564 | break; | |
1565 | case OP_EXEC: | |
ea31ed66 GG |
1566 | if ( o->op_sibling |
1567 | && (o->op_sibling->op_type == OP_NEXTSTATE || o->op_sibling->op_type == OP_DBSTATE) | |
d164302a GG |
1568 | && ckWARN(WARN_SYNTAX)) |
1569 | { | |
ea31ed66 GG |
1570 | if (o->op_sibling->op_sibling) { |
1571 | const OPCODE type = o->op_sibling->op_sibling->op_type; | |
d164302a GG |
1572 | if (type != OP_EXIT && type != OP_WARN && type != OP_DIE) { |
1573 | const line_t oldline = CopLINE(PL_curcop); | |
ea31ed66 | 1574 | CopLINE_set(PL_curcop, CopLINE((COP*)o->op_sibling)); |
d164302a GG |
1575 | Perl_warner(aTHX_ packWARN(WARN_EXEC), |
1576 | "Statement unlikely to be reached"); | |
1577 | Perl_warner(aTHX_ packWARN(WARN_EXEC), | |
1578 | "\t(Maybe you meant system() when you said exec()?)\n"); | |
1579 | CopLINE_set(PL_curcop, oldline); | |
1580 | } | |
1581 | } | |
1582 | } | |
1583 | break; | |
1584 | ||
1585 | case OP_GV: | |
1586 | if ((o->op_private & OPpEARLY_CV) && ckWARN(WARN_PROTOTYPE)) { | |
1587 | GV * const gv = cGVOPo_gv; | |
1588 | if (SvTYPE(gv) == SVt_PVGV && GvCV(gv) && SvPVX_const(GvCV(gv))) { | |
1589 | /* XXX could check prototype here instead of just carping */ | |
1590 | SV * const sv = sv_newmortal(); | |
1591 | gv_efullname3(sv, gv, NULL); | |
1592 | Perl_warner(aTHX_ packWARN(WARN_PROTOTYPE), | |
1593 | "%"SVf"() called too early to check prototype", | |
1594 | SVfARG(sv)); | |
1595 | } | |
1596 | } | |
1597 | break; | |
1598 | ||
1599 | case OP_CONST: | |
eb796c7f GG |
1600 | if (cSVOPo->op_private & OPpCONST_STRICT) |
1601 | no_bareword_allowed(o); | |
1602 | /* FALLTHROUGH */ | |
d164302a GG |
1603 | #ifdef USE_ITHREADS |
1604 | case OP_HINTSEVAL: | |
1605 | case OP_METHOD_NAMED: | |
1606 | /* Relocate sv to the pad for thread safety. | |
1607 | * Despite being a "constant", the SV is written to, | |
1608 | * for reference counts, sv_upgrade() etc. */ | |
1609 | if (cSVOPo->op_sv) { | |
1610 | const PADOFFSET ix = pad_alloc(OP_CONST, SVs_PADTMP); | |
1611 | if (o->op_type != OP_METHOD_NAMED && | |
1612 | (SvPADTMP(cSVOPo->op_sv) || SvPADMY(cSVOPo->op_sv))) | |
1613 | { | |
1614 | /* If op_sv is already a PADTMP/MY then it is being used by | |
1615 | * some pad, so make a copy. */ | |
1616 | sv_setsv(PAD_SVl(ix),cSVOPo->op_sv); | |
1617 | SvREADONLY_on(PAD_SVl(ix)); | |
1618 | SvREFCNT_dec(cSVOPo->op_sv); | |
1619 | } | |
1620 | else if (o->op_type != OP_METHOD_NAMED | |
1621 | && cSVOPo->op_sv == &PL_sv_undef) { | |
1622 | /* PL_sv_undef is hack - it's unsafe to store it in the | |
1623 | AV that is the pad, because av_fetch treats values of | |
1624 | PL_sv_undef as a "free" AV entry and will merrily | |
1625 | replace them with a new SV, causing pad_alloc to think | |
1626 | that this pad slot is free. (When, clearly, it is not) | |
1627 | */ | |
1628 | SvOK_off(PAD_SVl(ix)); | |
1629 | SvPADTMP_on(PAD_SVl(ix)); | |
1630 | SvREADONLY_on(PAD_SVl(ix)); | |
1631 | } | |
1632 | else { | |
1633 | SvREFCNT_dec(PAD_SVl(ix)); | |
1634 | SvPADTMP_on(cSVOPo->op_sv); | |
1635 | PAD_SETSV(ix, cSVOPo->op_sv); | |
1636 | /* XXX I don't know how this isn't readonly already. */ | |
1637 | SvREADONLY_on(PAD_SVl(ix)); | |
1638 | } | |
1639 | cSVOPo->op_sv = NULL; | |
1640 | o->op_targ = ix; | |
1641 | } | |
1642 | #endif | |
1643 | break; | |
1644 | ||
1645 | case OP_HELEM: { | |
1646 | UNOP *rop; | |
1647 | SV *lexname; | |
1648 | GV **fields; | |
1649 | SV **svp, *sv; | |
1650 | const char *key = NULL; | |
1651 | STRLEN keylen; | |
1652 | ||
1653 | if (((BINOP*)o)->op_last->op_type != OP_CONST) | |
1654 | break; | |
1655 | ||
1656 | /* Make the CONST have a shared SV */ | |
1657 | svp = cSVOPx_svp(((BINOP*)o)->op_last); | |
1658 | if ((!SvFAKE(sv = *svp) || !SvREADONLY(sv)) | |
1659 | && SvTYPE(sv) < SVt_PVMG && !SvROK(sv)) { | |
1660 | key = SvPV_const(sv, keylen); | |
1661 | lexname = newSVpvn_share(key, | |
1662 | SvUTF8(sv) ? -(I32)keylen : (I32)keylen, | |
1663 | 0); | |
1664 | SvREFCNT_dec(sv); | |
1665 | *svp = lexname; | |
1666 | } | |
1667 | ||
1668 | if ((o->op_private & (OPpLVAL_INTRO))) | |
1669 | break; | |
1670 | ||
1671 | rop = (UNOP*)((BINOP*)o)->op_first; | |
1672 | if (rop->op_type != OP_RV2HV || rop->op_first->op_type != OP_PADSV) | |
1673 | break; | |
1674 | lexname = *av_fetch(PL_comppad_name, rop->op_first->op_targ, TRUE); | |
1675 | if (!SvPAD_TYPED(lexname)) | |
1676 | break; | |
1677 | fields = (GV**)hv_fetchs(SvSTASH(lexname), "FIELDS", FALSE); | |
1678 | if (!fields || !GvHV(*fields)) | |
1679 | break; | |
1680 | key = SvPV_const(*svp, keylen); | |
1681 | if (!hv_fetch(GvHV(*fields), key, | |
1682 | SvUTF8(*svp) ? -(I32)keylen : (I32)keylen, FALSE)) { | |
ce16c625 | 1683 | Perl_croak(aTHX_ "No such class field \"%"SVf"\" " |
84cf752c | 1684 | "in variable %"SVf" of type %"HEKf, |
ce16c625 | 1685 | SVfARG(*svp), SVfARG(lexname), |
84cf752c | 1686 | HEKfARG(HvNAME_HEK(SvSTASH(lexname)))); |
d164302a GG |
1687 | } |
1688 | break; | |
1689 | } | |
1690 | ||
1691 | case OP_HSLICE: { | |
1692 | UNOP *rop; | |
1693 | SV *lexname; | |
1694 | GV **fields; | |
1695 | SV **svp; | |
1696 | const char *key; | |
1697 | STRLEN keylen; | |
1698 | SVOP *first_key_op, *key_op; | |
1699 | ||
1700 | if ((o->op_private & (OPpLVAL_INTRO)) | |
1701 | /* I bet there's always a pushmark... */ | |
1702 | || ((LISTOP*)o)->op_first->op_sibling->op_type != OP_LIST) | |
1703 | /* hmmm, no optimization if list contains only one key. */ | |
1704 | break; | |
1705 | rop = (UNOP*)((LISTOP*)o)->op_last; | |
1706 | if (rop->op_type != OP_RV2HV) | |
1707 | break; | |
1708 | if (rop->op_first->op_type == OP_PADSV) | |
1709 | /* @$hash{qw(keys here)} */ | |
1710 | rop = (UNOP*)rop->op_first; | |
1711 | else { | |
1712 | /* @{$hash}{qw(keys here)} */ | |
1713 | if (rop->op_first->op_type == OP_SCOPE | |
1714 | && cLISTOPx(rop->op_first)->op_last->op_type == OP_PADSV) | |
1715 | { | |
1716 | rop = (UNOP*)cLISTOPx(rop->op_first)->op_last; | |
1717 | } | |
1718 | else | |
1719 | break; | |
1720 | } | |
1721 | ||
1722 | lexname = *av_fetch(PL_comppad_name, rop->op_targ, TRUE); | |
1723 | if (!SvPAD_TYPED(lexname)) | |
1724 | break; | |
1725 | fields = (GV**)hv_fetchs(SvSTASH(lexname), "FIELDS", FALSE); | |
1726 | if (!fields || !GvHV(*fields)) | |
1727 | break; | |
1728 | /* Again guessing that the pushmark can be jumped over.... */ | |
1729 | first_key_op = (SVOP*)((LISTOP*)((LISTOP*)o)->op_first->op_sibling) | |
1730 | ->op_first->op_sibling; | |
1731 | for (key_op = first_key_op; key_op; | |
1732 | key_op = (SVOP*)key_op->op_sibling) { | |
1733 | if (key_op->op_type != OP_CONST) | |
1734 | continue; | |
1735 | svp = cSVOPx_svp(key_op); | |
1736 | key = SvPV_const(*svp, keylen); | |
1737 | if (!hv_fetch(GvHV(*fields), key, | |
1738 | SvUTF8(*svp) ? -(I32)keylen : (I32)keylen, FALSE)) { | |
ce16c625 | 1739 | Perl_croak(aTHX_ "No such class field \"%"SVf"\" " |
84cf752c | 1740 | "in variable %"SVf" of type %"HEKf, |
ce16c625 | 1741 | SVfARG(*svp), SVfARG(lexname), |
84cf752c | 1742 | HEKfARG(HvNAME_HEK(SvSTASH(lexname)))); |
d164302a GG |
1743 | } |
1744 | } | |
1745 | break; | |
1746 | } | |
1747 | case OP_SUBST: { | |
1748 | if (cPMOPo->op_pmreplrootu.op_pmreplroot) | |
1749 | finalize_op(cPMOPo->op_pmreplrootu.op_pmreplroot); | |
1750 | break; | |
1751 | } | |
1752 | default: | |
1753 | break; | |
1754 | } | |
1755 | ||
1756 | if (o->op_flags & OPf_KIDS) { | |
1757 | OP *kid; | |
1758 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) | |
1759 | finalize_op(kid); | |
1760 | } | |
1761 | } | |
1762 | ||
1763 | /* | |
3ad73efd Z |
1764 | =for apidoc Amx|OP *|op_lvalue|OP *o|I32 type |
1765 | ||
1766 | Propagate lvalue ("modifiable") context to an op and its children. | |
1767 | I<type> represents the context type, roughly based on the type of op that | |
1768 | would do the modifying, although C<local()> is represented by OP_NULL, | |
1769 | because it has no op type of its own (it is signalled by a flag on | |
001c3c51 FC |
1770 | the lvalue op). |
1771 | ||
1772 | This function detects things that can't be modified, such as C<$x+1>, and | |
1773 | generates errors for them. For example, C<$x+1 = 2> would cause it to be | |
1774 | called with an op of type OP_ADD and a C<type> argument of OP_SASSIGN. | |
1775 | ||
1776 | It also flags things that need to behave specially in an lvalue context, | |
1777 | such as C<$$x = 5> which might have to vivify a reference in C<$x>. | |
3ad73efd Z |
1778 | |
1779 | =cut | |
1780 | */ | |
ddeae0f1 | 1781 | |
79072805 | 1782 | OP * |
d3d7d28f | 1783 | Perl_op_lvalue_flags(pTHX_ OP *o, I32 type, U32 flags) |
79072805 | 1784 | { |
27da23d5 | 1785 | dVAR; |
79072805 | 1786 | OP *kid; |
ddeae0f1 DM |
1787 | /* -1 = error on localize, 0 = ignore localize, 1 = ok to localize */ |
1788 | int localize = -1; | |
79072805 | 1789 | |
13765c85 | 1790 | if (!o || (PL_parser && PL_parser->error_count)) |
11343788 | 1791 | return o; |
79072805 | 1792 | |
b162f9ea | 1793 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
1794 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
1795 | { | |
b162f9ea | 1796 | return o; |
7e363e51 | 1797 | } |
1c846c1f | 1798 | |
5c906035 GG |
1799 | assert( (o->op_flags & OPf_WANT) != OPf_WANT_VOID ); |
1800 | ||
69974ce6 FC |
1801 | if (type == OP_PRTF || type == OP_SPRINTF) type = OP_ENTERSUB; |
1802 | ||
11343788 | 1803 | switch (o->op_type) { |
68dc0745 | 1804 | case OP_UNDEF: |
3280af22 | 1805 | PL_modcount++; |
5dc0d613 | 1806 | return o; |
5f05dabc | 1807 | case OP_STUB: |
58bde88d | 1808 | if ((o->op_flags & OPf_PARENS) || PL_madskills) |
5f05dabc | 1809 | break; |
1810 | goto nomod; | |
a0d0e21e | 1811 | case OP_ENTERSUB: |
f79aa60b | 1812 | if ((type == OP_UNDEF || type == OP_REFGEN || type == OP_LOCK) && |
11343788 MB |
1813 | !(o->op_flags & OPf_STACKED)) { |
1814 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
767eda44 FC |
1815 | /* Both ENTERSUB and RV2CV use this bit, but for different pur- |
1816 | poses, so we need it clear. */ | |
e26df76a | 1817 | o->op_private &= ~1; |
22c35a8c | 1818 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 | 1819 | assert(cUNOPo->op_first->op_type == OP_NULL); |
93c66552 | 1820 | op_null(((LISTOP*)cUNOPo->op_first)->op_first);/* disable pushmark */ |
79072805 LW |
1821 | break; |
1822 | } | |
cd06dffe | 1823 | else { /* lvalue subroutine call */ |
777d9014 FC |
1824 | o->op_private |= OPpLVAL_INTRO |
1825 | |(OPpENTERSUB_INARGS * (type == OP_LEAVESUBLV)); | |
e6438c1a | 1826 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
4978d6d9 | 1827 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) { |
d0887bf3 | 1828 | /* Potential lvalue context: */ |
cd06dffe GS |
1829 | o->op_private |= OPpENTERSUB_INARGS; |
1830 | break; | |
1831 | } | |
1832 | else { /* Compile-time error message: */ | |
1833 | OP *kid = cUNOPo->op_first; | |
1834 | CV *cv; | |
cd06dffe | 1835 | |
3ea285d1 AL |
1836 | if (kid->op_type != OP_PUSHMARK) { |
1837 | if (kid->op_type != OP_NULL || kid->op_targ != OP_LIST) | |
1838 | Perl_croak(aTHX_ | |
1839 | "panic: unexpected lvalue entersub " | |
1840 | "args: type/targ %ld:%"UVuf, | |
1841 | (long)kid->op_type, (UV)kid->op_targ); | |
1842 | kid = kLISTOP->op_first; | |
1843 | } | |
cd06dffe GS |
1844 | while (kid->op_sibling) |
1845 | kid = kid->op_sibling; | |
1846 | if (!(kid->op_type == OP_NULL && kid->op_targ == OP_RV2CV)) { | |
cd06dffe GS |
1847 | break; /* Postpone until runtime */ |
1848 | } | |
b2ffa427 | 1849 | |
cd06dffe GS |
1850 | kid = kUNOP->op_first; |
1851 | if (kid->op_type == OP_NULL && kid->op_targ == OP_RV2SV) | |
1852 | kid = kUNOP->op_first; | |
b2ffa427 | 1853 | if (kid->op_type == OP_NULL) |
cd06dffe GS |
1854 | Perl_croak(aTHX_ |
1855 | "Unexpected constant lvalue entersub " | |
55140b79 | 1856 | "entry via type/targ %ld:%"UVuf, |
3d811634 | 1857 | (long)kid->op_type, (UV)kid->op_targ); |
cd06dffe | 1858 | if (kid->op_type != OP_GV) { |
cd06dffe GS |
1859 | break; |
1860 | } | |
b2ffa427 | 1861 | |
638eceb6 | 1862 | cv = GvCV(kGVOP_gv); |
1c846c1f | 1863 | if (!cv) |
da1dff94 | 1864 | break; |
cd06dffe GS |
1865 | if (CvLVALUE(cv)) |
1866 | break; | |
1867 | } | |
1868 | } | |
79072805 LW |
1869 | /* FALL THROUGH */ |
1870 | default: | |
a0d0e21e | 1871 | nomod: |
f5d552b4 | 1872 | if (flags & OP_LVALUE_NO_CROAK) return NULL; |
6fbb66d6 | 1873 | /* grep, foreach, subcalls, refgen */ |
145b2bbb FC |
1874 | if (type == OP_GREPSTART || type == OP_ENTERSUB |
1875 | || type == OP_REFGEN || type == OP_LEAVESUBLV) | |
a0d0e21e | 1876 | break; |
cea2e8a9 | 1877 | yyerror(Perl_form(aTHX_ "Can't modify %s in %s", |
638bc118 | 1878 | (o->op_type == OP_NULL && (o->op_flags & OPf_SPECIAL) |
cd06dffe GS |
1879 | ? "do block" |
1880 | : (o->op_type == OP_ENTERSUB | |
1881 | ? "non-lvalue subroutine call" | |
53e06cf0 | 1882 | : OP_DESC(o))), |
22c35a8c | 1883 | type ? PL_op_desc[type] : "local")); |
11343788 | 1884 | return o; |
79072805 | 1885 | |
a0d0e21e LW |
1886 | case OP_PREINC: |
1887 | case OP_PREDEC: | |
1888 | case OP_POW: | |
1889 | case OP_MULTIPLY: | |
1890 | case OP_DIVIDE: | |
1891 | case OP_MODULO: | |
1892 | case OP_REPEAT: | |
1893 | case OP_ADD: | |
1894 | case OP_SUBTRACT: | |
1895 | case OP_CONCAT: | |
1896 | case OP_LEFT_SHIFT: | |
1897 | case OP_RIGHT_SHIFT: | |
1898 | case OP_BIT_AND: | |
1899 | case OP_BIT_XOR: | |
1900 | case OP_BIT_OR: | |
1901 | case OP_I_MULTIPLY: | |
1902 | case OP_I_DIVIDE: | |
1903 | case OP_I_MODULO: | |
1904 | case OP_I_ADD: | |
1905 | case OP_I_SUBTRACT: | |
11343788 | 1906 | if (!(o->op_flags & OPf_STACKED)) |
a0d0e21e | 1907 | goto nomod; |
3280af22 | 1908 | PL_modcount++; |
a0d0e21e | 1909 | break; |
b2ffa427 | 1910 | |
79072805 | 1911 | case OP_COND_EXPR: |
ddeae0f1 | 1912 | localize = 1; |
11343788 | 1913 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
3ad73efd | 1914 | op_lvalue(kid, type); |
79072805 LW |
1915 | break; |
1916 | ||
1917 | case OP_RV2AV: | |
1918 | case OP_RV2HV: | |
11343788 | 1919 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) { |
e6438c1a | 1920 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
11343788 | 1921 | return o; /* Treat \(@foo) like ordinary list. */ |
748a9306 LW |
1922 | } |
1923 | /* FALL THROUGH */ | |
79072805 | 1924 | case OP_RV2GV: |
5dc0d613 | 1925 | if (scalar_mod_type(o, type)) |
3fe9a6f1 | 1926 | goto nomod; |
11343788 | 1927 | ref(cUNOPo->op_first, o->op_type); |
79072805 | 1928 | /* FALL THROUGH */ |
79072805 LW |
1929 | case OP_ASLICE: |
1930 | case OP_HSLICE: | |
78f9721b SM |
1931 | if (type == OP_LEAVESUBLV) |
1932 | o->op_private |= OPpMAYBE_LVSUB; | |
ddeae0f1 | 1933 | localize = 1; |
78f9721b SM |
1934 | /* FALL THROUGH */ |
1935 | case OP_AASSIGN: | |
93a17b20 LW |
1936 | case OP_NEXTSTATE: |
1937 | case OP_DBSTATE: | |
e6438c1a | 1938 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
79072805 | 1939 | break; |
28c5b5bc RGS |
1940 | case OP_AV2ARYLEN: |
1941 | PL_hints |= HINT_BLOCK_SCOPE; | |
1942 | if (type == OP_LEAVESUBLV) | |
1943 | o->op_private |= OPpMAYBE_LVSUB; | |
1944 | PL_modcount++; | |
1945 | break; | |
463ee0b2 | 1946 | case OP_RV2SV: |
aeea060c | 1947 | ref(cUNOPo->op_first, o->op_type); |
ddeae0f1 | 1948 | localize = 1; |
463ee0b2 | 1949 | /* FALL THROUGH */ |
79072805 | 1950 | case OP_GV: |
3280af22 | 1951 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 1952 | case OP_SASSIGN: |
bf4b1e52 GS |
1953 | case OP_ANDASSIGN: |
1954 | case OP_ORASSIGN: | |
c963b151 | 1955 | case OP_DORASSIGN: |
ddeae0f1 DM |
1956 | PL_modcount++; |
1957 | break; | |
1958 | ||
8990e307 | 1959 | case OP_AELEMFAST: |
93bad3fd | 1960 | case OP_AELEMFAST_LEX: |
6a077020 | 1961 | localize = -1; |
3280af22 | 1962 | PL_modcount++; |
8990e307 LW |
1963 | break; |
1964 | ||
748a9306 LW |
1965 | case OP_PADAV: |
1966 | case OP_PADHV: | |
e6438c1a | 1967 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
5196be3e MB |
1968 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) |
1969 | return o; /* Treat \(@foo) like ordinary list. */ | |
1970 | if (scalar_mod_type(o, type)) | |
3fe9a6f1 | 1971 | goto nomod; |
78f9721b SM |
1972 | if (type == OP_LEAVESUBLV) |
1973 | o->op_private |= OPpMAYBE_LVSUB; | |
748a9306 LW |
1974 | /* FALL THROUGH */ |
1975 | case OP_PADSV: | |
3280af22 | 1976 | PL_modcount++; |
ddeae0f1 | 1977 | if (!type) /* local() */ |
5ede95a0 BF |
1978 | Perl_croak(aTHX_ "Can't localize lexical variable %"SVf, |
1979 | PAD_COMPNAME_SV(o->op_targ)); | |
463ee0b2 LW |
1980 | break; |
1981 | ||
748a9306 | 1982 | case OP_PUSHMARK: |
ddeae0f1 | 1983 | localize = 0; |
748a9306 | 1984 | break; |
b2ffa427 | 1985 | |
69969c6f | 1986 | case OP_KEYS: |
d8065907 | 1987 | case OP_RKEYS: |
fad4a2e4 | 1988 | if (type != OP_SASSIGN && type != OP_LEAVESUBLV) |
69969c6f | 1989 | goto nomod; |
5d82c453 GA |
1990 | goto lvalue_func; |
1991 | case OP_SUBSTR: | |
1992 | if (o->op_private == 4) /* don't allow 4 arg substr as lvalue */ | |
1993 | goto nomod; | |
5f05dabc | 1994 | /* FALL THROUGH */ |
a0d0e21e | 1995 | case OP_POS: |
463ee0b2 | 1996 | case OP_VEC: |
fad4a2e4 | 1997 | lvalue_func: |
78f9721b SM |
1998 | if (type == OP_LEAVESUBLV) |
1999 | o->op_private |= OPpMAYBE_LVSUB; | |
11343788 MB |
2000 | pad_free(o->op_targ); |
2001 | o->op_targ = pad_alloc(o->op_type, SVs_PADMY); | |
5dc0d613 | 2002 | assert(SvTYPE(PAD_SV(o->op_targ)) == SVt_NULL); |
11343788 | 2003 | if (o->op_flags & OPf_KIDS) |
3ad73efd | 2004 | op_lvalue(cBINOPo->op_first->op_sibling, type); |
463ee0b2 | 2005 | break; |
a0d0e21e | 2006 | |
463ee0b2 LW |
2007 | case OP_AELEM: |
2008 | case OP_HELEM: | |
11343788 | 2009 | ref(cBINOPo->op_first, o->op_type); |
68dc0745 | 2010 | if (type == OP_ENTERSUB && |
5dc0d613 MB |
2011 | !(o->op_private & (OPpLVAL_INTRO | OPpDEREF))) |
2012 | o->op_private |= OPpLVAL_DEFER; | |
78f9721b SM |
2013 | if (type == OP_LEAVESUBLV) |
2014 | o->op_private |= OPpMAYBE_LVSUB; | |
ddeae0f1 | 2015 | localize = 1; |
3280af22 | 2016 | PL_modcount++; |
463ee0b2 LW |
2017 | break; |
2018 | ||
2019 | case OP_SCOPE: | |
2020 | case OP_LEAVE: | |
2021 | case OP_ENTER: | |
78f9721b | 2022 | case OP_LINESEQ: |
ddeae0f1 | 2023 | localize = 0; |
11343788 | 2024 | if (o->op_flags & OPf_KIDS) |
3ad73efd | 2025 | op_lvalue(cLISTOPo->op_last, type); |
a0d0e21e LW |
2026 | break; |
2027 | ||
2028 | case OP_NULL: | |
ddeae0f1 | 2029 | localize = 0; |
638bc118 GS |
2030 | if (o->op_flags & OPf_SPECIAL) /* do BLOCK */ |
2031 | goto nomod; | |
2032 | else if (!(o->op_flags & OPf_KIDS)) | |
463ee0b2 | 2033 | break; |
11343788 | 2034 | if (o->op_targ != OP_LIST) { |
3ad73efd | 2035 | op_lvalue(cBINOPo->op_first, type); |
a0d0e21e LW |
2036 | break; |
2037 | } | |
2038 | /* FALL THROUGH */ | |
463ee0b2 | 2039 | case OP_LIST: |
ddeae0f1 | 2040 | localize = 0; |
11343788 | 2041 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
5c906035 GG |
2042 | /* elements might be in void context because the list is |
2043 | in scalar context or because they are attribute sub calls */ | |
2044 | if ( (kid->op_flags & OPf_WANT) != OPf_WANT_VOID ) | |
2045 | op_lvalue(kid, type); | |
463ee0b2 | 2046 | break; |
78f9721b SM |
2047 | |
2048 | case OP_RETURN: | |
2049 | if (type != OP_LEAVESUBLV) | |
2050 | goto nomod; | |
3ad73efd | 2051 | break; /* op_lvalue()ing was handled by ck_return() */ |
1efec5ed FC |
2052 | |
2053 | case OP_COREARGS: | |
2054 | return o; | |
463ee0b2 | 2055 | } |
58d95175 | 2056 | |
8be1be90 AMS |
2057 | /* [20011101.069] File test operators interpret OPf_REF to mean that |
2058 | their argument is a filehandle; thus \stat(".") should not set | |
2059 | it. AMS 20011102 */ | |
2060 | if (type == OP_REFGEN && | |
ef69c8fc | 2061 | PL_check[o->op_type] == Perl_ck_ftst) |
8be1be90 AMS |
2062 | return o; |
2063 | ||
2064 | if (type != OP_LEAVESUBLV) | |
2065 | o->op_flags |= OPf_MOD; | |
2066 | ||
2067 | if (type == OP_AASSIGN || type == OP_SASSIGN) | |
2068 | o->op_flags |= OPf_SPECIAL|OPf_REF; | |
ddeae0f1 DM |
2069 | else if (!type) { /* local() */ |
2070 | switch (localize) { | |
2071 | case 1: | |
2072 | o->op_private |= OPpLVAL_INTRO; | |
2073 | o->op_flags &= ~OPf_SPECIAL; | |
2074 | PL_hints |= HINT_BLOCK_SCOPE; | |
2075 | break; | |
2076 | case 0: | |
2077 | break; | |
2078 | case -1: | |
a2a5de95 NC |
2079 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), |
2080 | "Useless localization of %s", OP_DESC(o)); | |
ddeae0f1 | 2081 | } |
463ee0b2 | 2082 | } |
8be1be90 AMS |
2083 | else if (type != OP_GREPSTART && type != OP_ENTERSUB |
2084 | && type != OP_LEAVESUBLV) | |
2085 | o->op_flags |= OPf_REF; | |
11343788 | 2086 | return o; |
463ee0b2 LW |
2087 | } |
2088 | ||
864dbfa3 | 2089 | STATIC bool |
5f66b61c | 2090 | S_scalar_mod_type(const OP *o, I32 type) |
3fe9a6f1 | 2091 | { |
2092 | switch (type) { | |
32a60974 | 2093 | case OP_POS: |
3fe9a6f1 | 2094 | case OP_SASSIGN: |
1efec5ed | 2095 | if (o && o->op_type == OP_RV2GV) |
3fe9a6f1 | 2096 | return FALSE; |
2097 | /* FALL THROUGH */ | |
2098 | case OP_PREINC: | |
2099 | case OP_PREDEC: | |
2100 | case OP_POSTINC: | |
2101 | case OP_POSTDEC: | |
2102 | case OP_I_PREINC: | |
2103 | case OP_I_PREDEC: | |
2104 | case OP_I_POSTINC: | |
2105 | case OP_I_POSTDEC: | |
2106 | case OP_POW: | |
2107 | case OP_MULTIPLY: | |
2108 | case OP_DIVIDE: | |
2109 | case OP_MODULO: | |
2110 | case OP_REPEAT: | |
2111 | case OP_ADD: | |
2112 | case OP_SUBTRACT: | |
2113 | case OP_I_MULTIPLY: | |
2114 | case OP_I_DIVIDE: | |
2115 | case OP_I_MODULO: | |
2116 | case OP_I_ADD: | |
2117 | case OP_I_SUBTRACT: | |
2118 | case OP_LEFT_SHIFT: | |
2119 | case OP_RIGHT_SHIFT: | |
2120 | case OP_BIT_AND: | |
2121 | case OP_BIT_XOR: | |
2122 | case OP_BIT_OR: | |
2123 | case OP_CONCAT: | |
2124 | case OP_SUBST: | |
2125 | case OP_TRANS: | |
bb16bae8 | 2126 | case OP_TRANSR: |
49e9fbe6 GS |
2127 | case OP_READ: |
2128 | case OP_SYSREAD: | |
2129 | case OP_RECV: | |
bf4b1e52 GS |
2130 | case OP_ANDASSIGN: |
2131 | case OP_ORASSIGN: | |
410d09fe | 2132 | case OP_DORASSIGN: |
3fe9a6f1 | 2133 | return TRUE; |
2134 | default: | |
2135 | return FALSE; | |
2136 | } | |
2137 | } | |
2138 | ||
35cd451c | 2139 | STATIC bool |
5f66b61c | 2140 | S_is_handle_constructor(const OP *o, I32 numargs) |
35cd451c | 2141 | { |
7918f24d NC |
2142 | PERL_ARGS_ASSERT_IS_HANDLE_CONSTRUCTOR; |
2143 | ||
35cd451c GS |
2144 | switch (o->op_type) { |
2145 | case OP_PIPE_OP: | |
2146 | case OP_SOCKPAIR: | |
504618e9 | 2147 | if (numargs == 2) |
35cd451c GS |
2148 | return TRUE; |
2149 | /* FALL THROUGH */ | |
2150 | case OP_SYSOPEN: | |
2151 | case OP_OPEN: | |
ded8aa31 | 2152 | case OP_SELECT: /* XXX c.f. SelectSaver.pm */ |
35cd451c GS |
2153 | case OP_SOCKET: |
2154 | case OP_OPEN_DIR: | |
2155 | case OP_ACCEPT: | |
504618e9 | 2156 | if (numargs == 1) |
35cd451c | 2157 | return TRUE; |
5f66b61c | 2158 | /* FALLTHROUGH */ |
35cd451c GS |
2159 | default: |
2160 | return FALSE; | |
2161 | } | |
2162 | } | |
2163 | ||
0d86688d NC |
2164 | static OP * |
2165 | S_refkids(pTHX_ OP *o, I32 type) | |
463ee0b2 | 2166 | { |
11343788 | 2167 | if (o && o->op_flags & OPf_KIDS) { |
6867be6d | 2168 | OP *kid; |
11343788 | 2169 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 LW |
2170 | ref(kid, type); |
2171 | } | |
11343788 | 2172 | return o; |
463ee0b2 LW |
2173 | } |
2174 | ||
2175 | OP * | |
e4c5ccf3 | 2176 | Perl_doref(pTHX_ OP *o, I32 type, bool set_op_ref) |
463ee0b2 | 2177 | { |
27da23d5 | 2178 | dVAR; |
463ee0b2 | 2179 | OP *kid; |
463ee0b2 | 2180 | |
7918f24d NC |
2181 | PERL_ARGS_ASSERT_DOREF; |
2182 | ||
13765c85 | 2183 | if (!o || (PL_parser && PL_parser->error_count)) |
11343788 | 2184 | return o; |
463ee0b2 | 2185 | |
11343788 | 2186 | switch (o->op_type) { |
a0d0e21e | 2187 | case OP_ENTERSUB: |
f4df43b5 | 2188 | if ((type == OP_EXISTS || type == OP_DEFINED) && |
11343788 MB |
2189 | !(o->op_flags & OPf_STACKED)) { |
2190 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
22c35a8c | 2191 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 | 2192 | assert(cUNOPo->op_first->op_type == OP_NULL); |
93c66552 | 2193 | op_null(((LISTOP*)cUNOPo->op_first)->op_first); /* disable pushmark */ |
11343788 | 2194 | o->op_flags |= OPf_SPECIAL; |
e26df76a | 2195 | o->op_private &= ~1; |
8990e307 | 2196 | } |
767eda44 | 2197 | else if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV){ |
0e9700df GG |
2198 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
2199 | : type == OP_RV2HV ? OPpDEREF_HV | |
2200 | : OPpDEREF_SV); | |
767eda44 FC |
2201 | o->op_flags |= OPf_MOD; |
2202 | } | |
2203 | ||
8990e307 | 2204 | break; |
aeea060c | 2205 | |
463ee0b2 | 2206 | case OP_COND_EXPR: |
11343788 | 2207 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
e4c5ccf3 | 2208 | doref(kid, type, set_op_ref); |
463ee0b2 | 2209 | break; |
8990e307 | 2210 | case OP_RV2SV: |
35cd451c GS |
2211 | if (type == OP_DEFINED) |
2212 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
e4c5ccf3 | 2213 | doref(cUNOPo->op_first, o->op_type, set_op_ref); |
4633a7c4 LW |
2214 | /* FALL THROUGH */ |
2215 | case OP_PADSV: | |
5f05dabc | 2216 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
2217 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
2218 | : type == OP_RV2HV ? OPpDEREF_HV | |
2219 | : OPpDEREF_SV); | |
11343788 | 2220 | o->op_flags |= OPf_MOD; |
a0d0e21e | 2221 | } |
8990e307 | 2222 | break; |
1c846c1f | 2223 | |
463ee0b2 LW |
2224 | case OP_RV2AV: |
2225 | case OP_RV2HV: | |
e4c5ccf3 RH |
2226 | if (set_op_ref) |
2227 | o->op_flags |= OPf_REF; | |
8990e307 | 2228 | /* FALL THROUGH */ |
463ee0b2 | 2229 | case OP_RV2GV: |
35cd451c GS |
2230 | if (type == OP_DEFINED) |
2231 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
e4c5ccf3 | 2232 | doref(cUNOPo->op_first, o->op_type, set_op_ref); |
463ee0b2 | 2233 | break; |
8990e307 | 2234 | |
463ee0b2 LW |
2235 | case OP_PADAV: |
2236 | case OP_PADHV: | |
e4c5ccf3 RH |
2237 | if (set_op_ref) |
2238 | o->op_flags |= OPf_REF; | |
79072805 | 2239 | break; |
aeea060c | 2240 | |
8990e307 | 2241 | case OP_SCALAR: |
79072805 | 2242 | case OP_NULL: |
11343788 | 2243 | if (!(o->op_flags & OPf_KIDS)) |
463ee0b2 | 2244 | break; |
e4c5ccf3 | 2245 | doref(cBINOPo->op_first, type, set_op_ref); |
79072805 LW |
2246 | break; |
2247 | case OP_AELEM: | |
2248 | case OP_HELEM: | |
e4c5ccf3 | 2249 | doref(cBINOPo->op_first, o->op_type, set_op_ref); |
5f05dabc | 2250 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
2251 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
2252 | : type == OP_RV2HV ? OPpDEREF_HV | |
2253 | : OPpDEREF_SV); | |
11343788 | 2254 | o->op_flags |= OPf_MOD; |
8990e307 | 2255 | } |
79072805 LW |
2256 | break; |
2257 | ||
463ee0b2 | 2258 | case OP_SCOPE: |
79072805 | 2259 | case OP_LEAVE: |
e4c5ccf3 RH |
2260 | set_op_ref = FALSE; |
2261 | /* FALL THROUGH */ | |
79072805 | 2262 | case OP_ENTER: |
8990e307 | 2263 | case OP_LIST: |
11343788 | 2264 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 2265 | break; |
e4c5ccf3 | 2266 | doref(cLISTOPo->op_last, type, set_op_ref); |
79072805 | 2267 | break; |
a0d0e21e LW |
2268 | default: |
2269 | break; | |
79072805 | 2270 | } |
11343788 | 2271 | return scalar(o); |
8990e307 | 2272 | |
79072805 LW |
2273 | } |
2274 | ||
09bef843 SB |
2275 | STATIC OP * |
2276 | S_dup_attrlist(pTHX_ OP *o) | |
2277 | { | |
97aff369 | 2278 | dVAR; |
0bd48802 | 2279 | OP *rop; |
09bef843 | 2280 | |
7918f24d NC |
2281 | PERL_ARGS_ASSERT_DUP_ATTRLIST; |
2282 | ||
09bef843 SB |
2283 | /* An attrlist is either a simple OP_CONST or an OP_LIST with kids, |
2284 | * where the first kid is OP_PUSHMARK and the remaining ones | |
2285 | * are OP_CONST. We need to push the OP_CONST values. | |
2286 | */ | |
2287 | if (o->op_type == OP_CONST) | |
b37c2d43 | 2288 | rop = newSVOP(OP_CONST, o->op_flags, SvREFCNT_inc_NN(cSVOPo->op_sv)); |
eb8433b7 NC |
2289 | #ifdef PERL_MAD |
2290 | else if (o->op_type == OP_NULL) | |
1d866c12 | 2291 | rop = NULL; |
eb8433b7 | 2292 | #endif |
09bef843 SB |
2293 | else { |
2294 | assert((o->op_type == OP_LIST) && (o->op_flags & OPf_KIDS)); | |
5f66b61c | 2295 | rop = NULL; |
09bef843 SB |
2296 | for (o = cLISTOPo->op_first; o; o=o->op_sibling) { |
2297 | if (o->op_type == OP_CONST) | |
2fcb4757 | 2298 | rop = op_append_elem(OP_LIST, rop, |
09bef843 | 2299 | newSVOP(OP_CONST, o->op_flags, |
b37c2d43 | 2300 | SvREFCNT_inc_NN(cSVOPo->op_sv))); |
09bef843 SB |
2301 | } |
2302 | } | |
2303 | return rop; | |
2304 | } | |
2305 | ||
2306 | STATIC void | |
95f0a2f1 | 2307 | S_apply_attrs(pTHX_ HV *stash, SV *target, OP *attrs, bool for_my) |
09bef843 | 2308 | { |
27da23d5 | 2309 | dVAR; |
09bef843 SB |
2310 | SV *stashsv; |
2311 | ||
7918f24d NC |
2312 | PERL_ARGS_ASSERT_APPLY_ATTRS; |
2313 | ||
09bef843 SB |
2314 | /* fake up C<use attributes $pkg,$rv,@attrs> */ |
2315 | ENTER; /* need to protect against side-effects of 'use' */ | |
5aaec2b4 | 2316 | stashsv = stash ? newSVhek(HvNAME_HEK(stash)) : &PL_sv_no; |
e4783991 | 2317 | |
09bef843 | 2318 | #define ATTRSMODULE "attributes" |
95f0a2f1 SB |
2319 | #define ATTRSMODULE_PM "attributes.pm" |
2320 | ||
2321 | if (for_my) { | |
95f0a2f1 | 2322 | /* Don't force the C<use> if we don't need it. */ |
a4fc7abc | 2323 | SV * const * const svp = hv_fetchs(GvHVn(PL_incgv), ATTRSMODULE_PM, FALSE); |
95f0a2f1 | 2324 | if (svp && *svp != &PL_sv_undef) |
6f207bd3 | 2325 | NOOP; /* already in %INC */ |
95f0a2f1 SB |
2326 | else |
2327 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, | |
6136c704 | 2328 | newSVpvs(ATTRSMODULE), NULL); |
95f0a2f1 SB |
2329 | } |
2330 | else { | |
2331 | Perl_load_module(aTHX_ PERL_LOADMOD_IMPORT_OPS, | |
6136c704 AL |
2332 | newSVpvs(ATTRSMODULE), |
2333 | NULL, | |
2fcb4757 | 2334 | op_prepend_elem(OP_LIST, |
95f0a2f1 | 2335 | newSVOP(OP_CONST, 0, stashsv), |
2fcb4757 | 2336 | op_prepend_elem(OP_LIST, |
95f0a2f1 SB |
2337 | newSVOP(OP_CONST, 0, |
2338 | newRV(target)), | |
2339 | dup_attrlist(attrs)))); | |
2340 | } | |
09bef843 SB |
2341 | LEAVE; |
2342 | } | |
2343 | ||
95f0a2f1 SB |
2344 | STATIC void |
2345 | S_apply_attrs_my(pTHX_ HV *stash, OP *target, OP *attrs, OP **imopsp) | |
2346 | { | |
97aff369 | 2347 | dVAR; |
95f0a2f1 SB |
2348 | OP *pack, *imop, *arg; |
2349 | SV *meth, *stashsv; | |
2350 | ||
7918f24d NC |
2351 | PERL_ARGS_ASSERT_APPLY_ATTRS_MY; |
2352 | ||
95f0a2f1 SB |
2353 | if (!attrs) |
2354 | return; | |
2355 | ||
2356 | assert(target->op_type == OP_PADSV || | |
2357 | target->op_type == OP_PADHV || | |
2358 | target->op_type == OP_PADAV); | |
2359 | ||
2360 | /* Ensure that attributes.pm is loaded. */ | |
dd2155a4 | 2361 | apply_attrs(stash, PAD_SV(target->op_targ), attrs, TRUE); |
95f0a2f1 SB |
2362 | |
2363 | /* Need package name for method call. */ | |
6136c704 | 2364 | pack = newSVOP(OP_CONST, 0, newSVpvs(ATTRSMODULE)); |
95f0a2f1 SB |
2365 | |
2366 | /* Build up the real arg-list. */ | |
5aaec2b4 NC |
2367 | stashsv = stash ? newSVhek(HvNAME_HEK(stash)) : &PL_sv_no; |
2368 | ||
95f0a2f1 SB |
2369 | arg = newOP(OP_PADSV, 0); |
2370 | arg->op_targ = target->op_targ; | |
2fcb4757 | 2371 | arg = op_prepend_elem(OP_LIST, |
95f0a2f1 | 2372 | newSVOP(OP_CONST, 0, stashsv), |
2fcb4757 | 2373 | op_prepend_elem(OP_LIST, |
95f0a2f1 | 2374 | newUNOP(OP_REFGEN, 0, |
3ad73efd | 2375 | op_lvalue(arg, OP_REFGEN)), |
95f0a2f1 SB |
2376 | dup_attrlist(attrs))); |
2377 | ||
2378 | /* Fake up a method call to import */ | |
18916d0d | 2379 | meth = newSVpvs_share("import"); |
95f0a2f1 | 2380 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL|OPf_WANT_VOID, |
2fcb4757 Z |
2381 | op_append_elem(OP_LIST, |
2382 | op_prepend_elem(OP_LIST, pack, list(arg)), | |
95f0a2f1 | 2383 | newSVOP(OP_METHOD_NAMED, 0, meth))); |
95f0a2f1 SB |
2384 | |
2385 | /* Combine the ops. */ | |
2fcb4757 | 2386 | *imopsp = op_append_elem(OP_LIST, *imopsp, imop); |
95f0a2f1 SB |
2387 | } |
2388 | ||
2389 | /* | |
2390 | =notfor apidoc apply_attrs_string | |
2391 | ||
2392 | Attempts to apply a list of attributes specified by the C<attrstr> and | |
2393 | C<len> arguments to the subroutine identified by the C<cv> argument which | |
2394 | is expected to be associated with the package identified by the C<stashpv> | |
2395 | argument (see L<attributes>). It gets this wrong, though, in that it | |
2396 | does not correctly identify the boundaries of the individual attribute | |
2397 | specifications within C<attrstr>. This is not really intended for the | |
2398 | public API, but has to be listed here for systems such as AIX which | |
2399 | need an explicit export list for symbols. (It's called from XS code | |
2400 | in support of the C<ATTRS:> keyword from F<xsubpp>.) Patches to fix it | |
2401 | to respect attribute syntax properly would be welcome. | |
2402 | ||
2403 | =cut | |
2404 | */ | |
2405 | ||
be3174d2 | 2406 | void |
6867be6d AL |
2407 | Perl_apply_attrs_string(pTHX_ const char *stashpv, CV *cv, |
2408 | const char *attrstr, STRLEN len) | |
be3174d2 | 2409 | { |
5f66b61c | 2410 | OP *attrs = NULL; |
be3174d2 | 2411 | |
7918f24d NC |
2412 | PERL_ARGS_ASSERT_APPLY_ATTRS_STRING; |
2413 | ||
be3174d2 GS |
2414 | if (!len) { |
2415 | len = strlen(attrstr); | |
2416 | } | |
2417 | ||
2418 | while (len) { | |
2419 | for (; isSPACE(*attrstr) && len; --len, ++attrstr) ; | |
2420 | if (len) { | |
890ce7af | 2421 | const char * const sstr = attrstr; |
be3174d2 | 2422 | for (; !isSPACE(*attrstr) && len; --len, ++attrstr) ; |
2fcb4757 | 2423 | attrs = op_append_elem(OP_LIST, attrs, |
be3174d2 GS |
2424 | newSVOP(OP_CONST, 0, |
2425 | newSVpvn(sstr, attrstr-sstr))); | |
2426 | } | |
2427 | } | |
2428 | ||
2429 | Perl_load_module(aTHX_ PERL_LOADMOD_IMPORT_OPS, | |
6136c704 | 2430 | newSVpvs(ATTRSMODULE), |
2fcb4757 | 2431 | NULL, op_prepend_elem(OP_LIST, |
be3174d2 | 2432 | newSVOP(OP_CONST, 0, newSVpv(stashpv,0)), |
2fcb4757 | 2433 | op_prepend_elem(OP_LIST, |
be3174d2 | 2434 | newSVOP(OP_CONST, 0, |
ad64d0ec | 2435 | newRV(MUTABLE_SV(cv))), |
be3174d2 GS |
2436 | attrs))); |
2437 | } | |
2438 | ||
09bef843 | 2439 | STATIC OP * |
95f0a2f1 | 2440 | S_my_kid(pTHX_ OP *o, OP *attrs, OP **imopsp) |
93a17b20 | 2441 | { |
97aff369 | 2442 | dVAR; |
93a17b20 | 2443 | I32 type; |
a1fba7eb | 2444 | const bool stately = PL_parser && PL_parser->in_my == KEY_state; |
93a17b20 | 2445 | |
7918f24d NC |
2446 | PERL_ARGS_ASSERT_MY_KID; |
2447 | ||
13765c85 | 2448 | if (!o || (PL_parser && PL_parser->error_count)) |
11343788 | 2449 | return o; |
93a17b20 | 2450 | |
bc61e325 | 2451 | type = o->op_type; |
eb8433b7 NC |
2452 | if (PL_madskills && type == OP_NULL && o->op_flags & OPf_KIDS) { |
2453 | (void)my_kid(cUNOPo->op_first, attrs, imopsp); | |
2454 | return o; | |
2455 | } | |
2456 | ||
93a17b20 | 2457 | if (type == OP_LIST) { |
6867be6d | 2458 | OP *kid; |
11343788 | 2459 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
95f0a2f1 | 2460 | my_kid(kid, attrs, imopsp); |
0865059d | 2461 | return o; |
eb8433b7 NC |
2462 | } else if (type == OP_UNDEF |
2463 | #ifdef PERL_MAD | |
2464 | || type == OP_STUB | |
2465 | #endif | |
2466 | ) { | |
7766148a | 2467 | return o; |
77ca0c92 LW |
2468 | } else if (type == OP_RV2SV || /* "our" declaration */ |
2469 | type == OP_RV2AV || | |
2470 | type == OP_RV2HV) { /* XXX does this let anything illegal in? */ | |
1ce0b88c | 2471 | if (cUNOPo->op_first->op_type != OP_GV) { /* MJD 20011224 */ |
fab01b8e | 2472 | yyerror(Perl_form(aTHX_ "Can't declare %s in \"%s\"", |
952306ac | 2473 | OP_DESC(o), |
12bd6ede DM |
2474 | PL_parser->in_my == KEY_our |
2475 | ? "our" | |
2476 | : PL_parser->in_my == KEY_state ? "state" : "my")); | |
1ce0b88c | 2477 | } else if (attrs) { |
551405c4 | 2478 | GV * const gv = cGVOPx_gv(cUNOPo->op_first); |
12bd6ede DM |
2479 | PL_parser->in_my = FALSE; |
2480 | PL_parser->in_my_stash = NULL; | |
1ce0b88c RGS |
2481 | apply_attrs(GvSTASH(gv), |
2482 | (type == OP_RV2SV ? GvSV(gv) : | |
ad64d0ec NC |
2483 | type == OP_RV2AV ? MUTABLE_SV(GvAV(gv)) : |
2484 | type == OP_RV2HV ? MUTABLE_SV(GvHV(gv)) : MUTABLE_SV(gv)), | |
1ce0b88c RGS |
2485 | attrs, FALSE); |
2486 | } | |
192587c2 | 2487 | o->op_private |= OPpOUR_INTRO; |
77ca0c92 | 2488 | return o; |
95f0a2f1 SB |
2489 | } |
2490 | else if (type != OP_PADSV && | |
93a17b20 LW |
2491 | type != OP_PADAV && |
2492 | type != OP_PADHV && | |
2493 | type != OP_PUSHMARK) | |
2494 | { | |
eb64745e | 2495 | yyerror(Perl_form(aTHX_ "Can't declare %s in \"%s\"", |
53e06cf0 | 2496 | OP_DESC(o), |
12bd6ede DM |
2497 | PL_parser->in_my == KEY_our |
2498 | ? "our" | |
2499 | : PL_parser->in_my == KEY_state ? "state" : "my")); | |
11343788 | 2500 | return o; |
93a17b20 | 2501 | } |
09bef843 SB |
2502 | else if (attrs && type != OP_PUSHMARK) { |
2503 | HV *stash; | |
09bef843 | 2504 | |
12bd6ede DM |
2505 | PL_parser->in_my = FALSE; |
2506 | PL_parser->in_my_stash = NULL; | |
eb64745e | 2507 | |
09bef843 | 2508 | /* check for C<my Dog $spot> when deciding package */ |
dd2155a4 DM |
2509 | stash = PAD_COMPNAME_TYPE(o->op_targ); |
2510 | if (!stash) | |
09bef843 | 2511 | stash = PL_curstash; |
95f0a2f1 | 2512 | apply_attrs_my(stash, o, attrs, imopsp); |
09bef843 | 2513 | } |
11343788 MB |
2514 | o->op_flags |= OPf_MOD; |
2515 | o->op_private |= OPpLVAL_INTRO; | |
a1fba7eb | 2516 | if (stately) |
952306ac | 2517 | o->op_private |= OPpPAD_STATE; |
11343788 | 2518 | return o; |
93a17b20 LW |
2519 | } |
2520 | ||
2521 | OP * | |
09bef843 SB |
2522 | Perl_my_attrs(pTHX_ OP *o, OP *attrs) |
2523 | { | |
97aff369 | 2524 | dVAR; |
0bd48802 | 2525 | OP *rops; |
95f0a2f1 SB |
2526 | int maybe_scalar = 0; |
2527 | ||
7918f24d NC |
2528 | PERL_ARGS_ASSERT_MY_ATTRS; |
2529 | ||
d2be0de5 | 2530 | /* [perl #17376]: this appears to be premature, and results in code such as |
c754c3d7 | 2531 | C< our(%x); > executing in list mode rather than void mode */ |
d2be0de5 | 2532 | #if 0 |
09bef843 SB |
2533 | if (o->op_flags & OPf_PARENS) |
2534 | list(o); | |
95f0a2f1 SB |
2535 | else |
2536 | maybe_scalar = 1; | |
d2be0de5 YST |
2537 | #else |
2538 | maybe_scalar = 1; | |
2539 | #endif | |
09bef843 SB |
2540 | if (attrs) |
2541 | SAVEFREEOP(attrs); | |
5f66b61c | 2542 | rops = NULL; |
95f0a2f1 SB |
2543 | o = my_kid(o, attrs, &rops); |
2544 | if (rops) { | |
2545 | if (maybe_scalar && o->op_type == OP_PADSV) { | |
2fcb4757 | 2546 | o = scalar(op_append_list(OP_LIST, rops, o)); |
95f0a2f1 SB |
2547 | o->op_private |= OPpLVAL_INTRO; |
2548 | } | |
f5d1ed10 FC |
2549 | else { |
2550 | /* The listop in rops might have a pushmark at the beginning, | |
2551 | which will mess up list assignment. */ | |
2552 | LISTOP * const lrops = (LISTOP *)rops; /* for brevity */ | |
2553 | if (rops->op_type == OP_LIST && | |
2554 | lrops->op_first && lrops->op_first->op_type == OP_PUSHMARK) | |
2555 | { | |
2556 | OP * const pushmark = lrops->op_first; | |
2557 | lrops->op_first = pushmark->op_sibling; | |
2558 | op_free(pushmark); | |
2559 | } | |
2fcb4757 | 2560 | o = op_append_list(OP_LIST, o, rops); |
f5d1ed10 | 2561 | } |
95f0a2f1 | 2562 | } |
12bd6ede DM |
2563 | PL_parser->in_my = FALSE; |
2564 | PL_parser->in_my_stash = NULL; | |
eb64745e | 2565 | return o; |
09bef843 SB |
2566 | } |
2567 | ||
2568 | OP * | |
864dbfa3 | 2569 | Perl_sawparens(pTHX_ OP *o) |
79072805 | 2570 | { |
96a5add6 | 2571 | PERL_UNUSED_CONTEXT; |
79072805 LW |
2572 | if (o) |
2573 | o->op_flags |= OPf_PARENS; | |
2574 | return o; | |
2575 | } | |
2576 | ||
2577 | OP * | |
864dbfa3 | 2578 | Perl_bind_match(pTHX_ I32 type, OP *left, OP *right) |
79072805 | 2579 | { |
11343788 | 2580 | OP *o; |
59f00321 | 2581 | bool ismatchop = 0; |
1496a290 AL |
2582 | const OPCODE ltype = left->op_type; |
2583 | const OPCODE rtype = right->op_type; | |
79072805 | 2584 | |
7918f24d NC |
2585 | PERL_ARGS_ASSERT_BIND_MATCH; |
2586 | ||
1496a290 AL |
2587 | if ( (ltype == OP_RV2AV || ltype == OP_RV2HV || ltype == OP_PADAV |
2588 | || ltype == OP_PADHV) && ckWARN(WARN_MISC)) | |
041457d9 | 2589 | { |
1496a290 | 2590 | const char * const desc |
bb16bae8 FC |
2591 | = PL_op_desc[( |
2592 | rtype == OP_SUBST || rtype == OP_TRANS | |
2593 | || rtype == OP_TRANSR | |
2594 | ) | |
666ea192 | 2595 | ? (int)rtype : OP_MATCH]; |
c6771ab6 FC |
2596 | const bool isary = ltype == OP_RV2AV || ltype == OP_PADAV; |
2597 | GV *gv; | |
2598 | SV * const name = | |
2599 | (ltype == OP_RV2AV || ltype == OP_RV2HV) | |
2600 | ? cUNOPx(left)->op_first->op_type == OP_GV | |
2601 | && (gv = cGVOPx_gv(cUNOPx(left)->op_first)) | |
2602 | ? varname(gv, isary ? '@' : '%', 0, NULL, 0, 1) | |
2603 | : NULL | |
ba510004 FC |
2604 | : varname( |
2605 | (GV *)PL_compcv, isary ? '@' : '%', left->op_targ, NULL, 0, 1 | |
2606 | ); | |
c6771ab6 FC |
2607 | if (name) |
2608 | Perl_warner(aTHX_ packWARN(WARN_MISC), | |
2609 | "Applying %s to %"SVf" will act on scalar(%"SVf")", | |
2610 | desc, name, name); | |
2611 | else { | |
2612 | const char * const sample = (isary | |
666ea192 | 2613 | ? "@array" : "%hash"); |
c6771ab6 | 2614 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
1c846c1f | 2615 | "Applying %s to %s will act on scalar(%s)", |
599cee73 | 2616 | desc, sample, sample); |
c6771ab6 | 2617 | } |
2ae324a7 | 2618 | } |
2619 | ||
1496a290 | 2620 | if (rtype == OP_CONST && |
5cc9e5c9 RH |
2621 | cSVOPx(right)->op_private & OPpCONST_BARE && |
2622 | cSVOPx(right)->op_private & OPpCONST_STRICT) | |
2623 | { | |
2624 | no_bareword_allowed(right); | |
2625 | } | |
2626 | ||
bb16bae8 | 2627 | /* !~ doesn't make sense with /r, so error on it for now */ |
4f4d7508 DC |
2628 | if (rtype == OP_SUBST && (cPMOPx(right)->op_pmflags & PMf_NONDESTRUCT) && |
2629 | type == OP_NOT) | |
2630 | yyerror("Using !~ with s///r doesn't make sense"); | |
bb16bae8 FC |
2631 | if (rtype == OP_TRANSR && type == OP_NOT) |
2632 | yyerror("Using !~ with tr///r doesn't make sense"); | |
4f4d7508 | 2633 | |
2474a784 FC |
2634 | ismatchop = (rtype == OP_MATCH || |
2635 | rtype == OP_SUBST || | |
bb16bae8 | 2636 | rtype == OP_TRANS || rtype == OP_TRANSR) |
2474a784 | 2637 | && !(right->op_flags & OPf_SPECIAL); |
59f00321 RGS |
2638 | if (ismatchop && right->op_private & OPpTARGET_MY) { |
2639 | right->op_targ = 0; | |
2640 | right->op_private &= ~OPpTARGET_MY; | |
2641 | } | |
2642 | if (!(right->op_flags & OPf_STACKED) && ismatchop) { | |
1496a290 AL |
2643 | OP *newleft; |
2644 | ||
79072805 | 2645 | right->op_flags |= OPf_STACKED; |
bb16bae8 | 2646 | if (rtype != OP_MATCH && rtype != OP_TRANSR && |
1496a290 | 2647 | ! (rtype == OP_TRANS && |
4f4d7508 DC |
2648 | right->op_private & OPpTRANS_IDENTICAL) && |
2649 | ! (rtype == OP_SUBST && | |
2650 | (cPMOPx(right)->op_pmflags & PMf_NONDESTRUCT))) | |
3ad73efd | 2651 | newleft = op_lvalue(left, rtype); |
1496a290 AL |
2652 | else |
2653 | newleft = left; | |
bb16bae8 | 2654 | if (right->op_type == OP_TRANS || right->op_type == OP_TRANSR) |
1496a290 | 2655 | o = newBINOP(OP_NULL, OPf_STACKED, scalar(newleft), right); |
79072805 | 2656 | else |
2fcb4757 | 2657 | o = op_prepend_elem(rtype, scalar(newleft), right); |
79072805 | 2658 | if (type == OP_NOT) |
11343788 MB |
2659 | return newUNOP(OP_NOT, 0, scalar(o)); |
2660 | return o; | |
79072805 LW |
2661 | } |
2662 | else | |
2663 | return bind_match(type, left, | |
131b3ad0 | 2664 | pmruntime(newPMOP(OP_MATCH, 0), right, 0)); |
79072805 LW |
2665 | } |
2666 | ||
2667 | OP * | |
864dbfa3 | 2668 | Perl_invert(pTHX_ OP *o) |
79072805 | 2669 | { |
11343788 | 2670 | if (!o) |
1d866c12 | 2671 | return NULL; |
11343788 | 2672 | return newUNOP(OP_NOT, OPf_SPECIAL, scalar(o)); |
79072805 LW |
2673 | } |
2674 | ||
3ad73efd Z |
2675 | /* |
2676 | =for apidoc Amx|OP *|op_scope|OP *o | |
2677 | ||
2678 | Wraps up an op tree with some additional ops so that at runtime a dynamic | |
2679 | scope will be created. The original ops run in the new dynamic scope, | |
2680 | and then, provided that they exit normally, the scope will be unwound. | |
2681 | The additional ops used to create and unwind the dynamic scope will | |
2682 | normally be an C<enter>/C<leave> pair, but a C<scope> op may be used | |
2683 | instead if the ops are simple enough to not need the full dynamic scope | |
2684 | structure. | |
2685 | ||
2686 | =cut | |
2687 | */ | |
2688 | ||
79072805 | 2689 | OP * |
3ad73efd | 2690 | Perl_op_scope(pTHX_ OP *o) |
79072805 | 2691 | { |
27da23d5 | 2692 | dVAR; |
79072805 | 2693 | if (o) { |
3280af22 | 2694 | if (o->op_flags & OPf_PARENS || PERLDB_NOOPT || PL_tainting) { |
2fcb4757 | 2695 | o = op_prepend_elem(OP_LINESEQ, newOP(OP_ENTER, 0), o); |
463ee0b2 | 2696 | o->op_type = OP_LEAVE; |
22c35a8c | 2697 | o->op_ppaddr = PL_ppaddr[OP_LEAVE]; |
463ee0b2 | 2698 | } |
fdb22418 HS |
2699 | else if (o->op_type == OP_LINESEQ) { |
2700 | OP *kid; | |
2701 | o->op_type = OP_SCOPE; | |
2702 | o->op_ppaddr = PL_ppaddr[OP_SCOPE]; | |
2703 | kid = ((LISTOP*)o)->op_first; | |
59110972 | 2704 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) { |
fdb22418 | 2705 | op_null(kid); |
59110972 RH |
2706 | |
2707 | /* The following deals with things like 'do {1 for 1}' */ | |
2708 | kid = kid->op_sibling; | |
2709 | if (kid && | |
2710 | (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE)) | |
2711 | op_null(kid); | |
2712 | } | |
463ee0b2 | 2713 | } |
fdb22418 | 2714 | else |
5f66b61c | 2715 | o = newLISTOP(OP_SCOPE, 0, o, NULL); |
79072805 LW |
2716 | } |
2717 | return o; | |
2718 | } | |
1930840b | 2719 | |
a0d0e21e | 2720 | int |
864dbfa3 | 2721 | Perl_block_start(pTHX_ int full) |
79072805 | 2722 | { |
97aff369 | 2723 | dVAR; |
73d840c0 | 2724 | const int retval = PL_savestack_ix; |
1930840b | 2725 | |
dd2155a4 | 2726 | pad_block_start(full); |
b3ac6de7 | 2727 | SAVEHINTS(); |
3280af22 | 2728 | PL_hints &= ~HINT_BLOCK_SCOPE; |
68da3b2f | 2729 | SAVECOMPILEWARNINGS(); |
72dc9ed5 | 2730 | PL_compiling.cop_warnings = DUP_WARNINGS(PL_compiling.cop_warnings); |
1930840b | 2731 | |
a88d97bf | 2732 | CALL_BLOCK_HOOKS(bhk_start, full); |
1930840b | 2733 | |
a0d0e21e LW |
2734 | return retval; |
2735 | } | |
2736 | ||
2737 | OP* | |
864dbfa3 | 2738 | Perl_block_end(pTHX_ I32 floor, OP *seq) |
a0d0e21e | 2739 | { |
97aff369 | 2740 | dVAR; |
6867be6d | 2741 | const int needblockscope = PL_hints & HINT_BLOCK_SCOPE; |
1930840b BM |
2742 | OP* retval = scalarseq(seq); |
2743 | ||
a88d97bf | 2744 | CALL_BLOCK_HOOKS(bhk_pre_end, &retval); |
1930840b | 2745 | |
e9818f4e | 2746 | LEAVE_SCOPE(floor); |
623e6609 | 2747 | CopHINTS_set(&PL_compiling, PL_hints); |
a0d0e21e | 2748 | if (needblockscope) |
3280af22 | 2749 | PL_hints |= HINT_BLOCK_SCOPE; /* propagate out */ |
dd2155a4 | 2750 | pad_leavemy(); |
1930840b | 2751 | |
a88d97bf | 2752 | CALL_BLOCK_HOOKS(bhk_post_end, &retval); |
1930840b | 2753 | |
a0d0e21e LW |
2754 | return retval; |
2755 | } | |
2756 | ||
fd85fad2 BM |
2757 | /* |
2758 | =head1 Compile-time scope hooks | |
2759 | ||
3e4ddde5 | 2760 | =for apidoc Aox||blockhook_register |
fd85fad2 BM |
2761 | |
2762 | Register a set of hooks to be called when the Perl lexical scope changes | |
2763 | at compile time. See L<perlguts/"Compile-time scope hooks">. | |
2764 | ||
2765 | =cut | |
2766 | */ | |
2767 | ||
bb6c22e7 BM |
2768 | void |
2769 | Perl_blockhook_register(pTHX_ BHK *hk) | |
2770 | { | |
2771 | PERL_ARGS_ASSERT_BLOCKHOOK_REGISTER; | |
2772 | ||
2773 | Perl_av_create_and_push(aTHX_ &PL_blockhooks, newSViv(PTR2IV(hk))); | |
2774 | } | |
2775 | ||
76e3520e | 2776 | STATIC OP * |
cea2e8a9 | 2777 | S_newDEFSVOP(pTHX) |
54b9620d | 2778 | { |
97aff369 | 2779 | dVAR; |
cc76b5cc | 2780 | const PADOFFSET offset = pad_findmy_pvs("$_", 0); |
00b1698f | 2781 | if (offset == NOT_IN_PAD || PAD_COMPNAME_FLAGS_isOUR(offset)) { |
59f00321 RGS |
2782 | return newSVREF(newGVOP(OP_GV, 0, PL_defgv)); |
2783 | } | |
2784 | else { | |
551405c4 | 2785 | OP * const o = newOP(OP_PADSV, 0); |
59f00321 RGS |
2786 | o->op_targ = offset; |
2787 | return o; | |
2788 | } | |
54b9620d MB |
2789 | } |
2790 | ||
a0d0e21e | 2791 | void |
864dbfa3 | 2792 | Perl_newPROG(pTHX_ OP *o) |
a0d0e21e | 2793 | { |
97aff369 | 2794 | dVAR; |
7918f24d NC |
2795 | |
2796 | PERL_ARGS_ASSERT_NEWPROG; | |
2797 | ||
3280af22 | 2798 | if (PL_in_eval) { |
86a64801 | 2799 | PERL_CONTEXT *cx; |
63429d50 | 2800 | I32 i; |
b295d113 TH |
2801 | if (PL_eval_root) |
2802 | return; | |
faef0170 HS |
2803 | PL_eval_root = newUNOP(OP_LEAVEEVAL, |
2804 | ((PL_in_eval & EVAL_KEEPERR) | |
2805 | ? OPf_SPECIAL : 0), o); | |
86a64801 GG |
2806 | |
2807 | cx = &cxstack[cxstack_ix]; | |
2808 | assert(CxTYPE(cx) == CXt_EVAL); | |
2809 | ||
2810 | if ((cx->blk_gimme & G_WANT) == G_VOID) | |
2811 | scalarvoid(PL_eval_root); | |
2812 | else if ((cx->blk_gimme & G_WANT) == G_ARRAY) | |
2813 | list(PL_eval_root); | |
2814 | else | |
2815 | scalar(PL_eval_root); | |
2816 | ||
5983a79d BM |
2817 | /* don't use LINKLIST, since PL_eval_root might indirect through |
2818 | * a rather expensive function call and LINKLIST evaluates its | |
2819 | * argument more than once */ | |
2820 | PL_eval_start = op_linklist(PL_eval_root); | |
7934575e GS |
2821 | PL_eval_root->op_private |= OPpREFCOUNTED; |
2822 | OpREFCNT_set(PL_eval_root, 1); | |
3280af22 | 2823 | PL_eval_root->op_next = 0; |
63429d50 FC |
2824 | i = PL_savestack_ix; |
2825 | SAVEFREEOP(o); | |
2826 | ENTER; | |
a2efc822 | 2827 | CALL_PEEP(PL_eval_start); |
86a64801 | 2828 | finalize_optree(PL_eval_root); |
63429d50 FC |
2829 | LEAVE; |
2830 | PL_savestack_ix = i; | |
a0d0e21e LW |
2831 | } |
2832 | else { | |
6be89cf9 AE |
2833 | if (o->op_type == OP_STUB) { |
2834 | PL_comppad_name = 0; | |
2835 | PL_compcv = 0; | |
d2c837a0 | 2836 | S_op_destroy(aTHX_ o); |
a0d0e21e | 2837 | return; |
6be89cf9 | 2838 | } |
3ad73efd | 2839 | PL_main_root = op_scope(sawparens(scalarvoid(o))); |
3280af22 NIS |
2840 | PL_curcop = &PL_compiling; |
2841 | PL_main_start = LINKLIST(PL_main_root); | |
7934575e GS |
2842 | PL_main_root->op_private |= OPpREFCOUNTED; |
2843 | OpREFCNT_set(PL_main_root, 1); | |
3280af22 | 2844 | PL_main_root->op_next = 0; |
a2efc822 | 2845 | CALL_PEEP(PL_main_start); |
d164302a | 2846 | finalize_optree(PL_main_root); |
3280af22 | 2847 | PL_compcv = 0; |
3841441e | 2848 | |
4fdae800 | 2849 | /* Register with debugger */ |
84902520 | 2850 | if (PERLDB_INTER) { |
b96d8cd9 | 2851 | CV * const cv = get_cvs("DB::postponed", 0); |
3841441e CS |
2852 | if (cv) { |
2853 | dSP; | |
924508f0 | 2854 | PUSHMARK(SP); |
ad64d0ec | 2855 | XPUSHs(MUTABLE_SV(CopFILEGV(&PL_compiling))); |
3841441e | 2856 | PUTBACK; |
ad64d0ec | 2857 | call_sv(MUTABLE_SV(cv), G_DISCARD); |
3841441e CS |
2858 | } |
2859 | } | |
79072805 | 2860 | } |
79072805 LW |
2861 | } |
2862 | ||
2863 | OP * | |
864dbfa3 | 2864 | Perl_localize(pTHX_ OP *o, I32 lex) |
79072805 | 2865 | { |
97aff369 | 2866 | dVAR; |
7918f24d NC |
2867 | |
2868 | PERL_ARGS_ASSERT_LOCALIZE; | |
2869 | ||
79072805 | 2870 | if (o->op_flags & OPf_PARENS) |
d2be0de5 YST |
2871 | /* [perl #17376]: this appears to be premature, and results in code such as |
2872 | C< our(%x); > executing in list mode rather than void mode */ | |
2873 | #if 0 | |
79072805 | 2874 | list(o); |
d2be0de5 | 2875 | #else |
6f207bd3 | 2876 | NOOP; |
d2be0de5 | 2877 | #endif |
8990e307 | 2878 | else { |
f06b5848 DM |
2879 | if ( PL_parser->bufptr > PL_parser->oldbufptr |
2880 | && PL_parser->bufptr[-1] == ',' | |
041457d9 | 2881 | && ckWARN(WARN_PARENTHESIS)) |
64420d0d | 2882 | { |
f06b5848 | 2883 | char *s = PL_parser->bufptr; |
bac662ee | 2884 | bool sigil = FALSE; |
64420d0d | 2885 | |
8473848f | 2886 | /* some heuristics to detect a potential error */ |
bac662ee | 2887 | while (*s && (strchr(", \t\n", *s))) |
64420d0d | 2888 | s++; |
8473848f | 2889 | |
bac662ee TS |
2890 | while (1) { |
2891 | if (*s && strchr("@$%*", *s) && *++s | |
2892 | && (isALNUM(*s) || UTF8_IS_CONTINUED(*s))) { | |
2893 | s++; | |
2894 | sigil = TRUE; | |
2895 | while (*s && (isALNUM(*s) || UTF8_IS_CONTINUED(*s))) | |
2896 | s++; | |
2897 | while (*s && (strchr(", \t\n", *s))) | |
2898 | s++; | |
2899 | } | |
2900 | else | |
2901 | break; | |
2902 | } | |
2903 | if (sigil && (*s == ';' || *s == '=')) { | |
2904 | Perl_warner(aTHX_ packWARN(WARN_PARENTHESIS), | |
8473848f | 2905 | "Parentheses missing around \"%s\" list", |
12bd6ede DM |
2906 | lex |
2907 | ? (PL_parser->in_my == KEY_our | |
2908 | ? "our" | |
2909 | : PL_parser->in_my == KEY_state | |
2910 | ? "state" | |
2911 | : "my") | |
2912 | : "local"); | |
8473848f | 2913 | } |
8990e307 LW |
2914 | } |
2915 | } | |
93a17b20 | 2916 | if (lex) |
eb64745e | 2917 | o = my(o); |
93a17b20 | 2918 | else |
3ad73efd | 2919 | o = op_lvalue(o, OP_NULL); /* a bit kludgey */ |
12bd6ede DM |
2920 | PL_parser->in_my = FALSE; |
2921 | PL_parser->in_my_stash = NULL; | |
eb64745e | 2922 | return o; |
79072805 LW |
2923 | } |
2924 | ||
2925 | OP * | |
864dbfa3 | 2926 | Perl_jmaybe(pTHX_ OP *o) |
79072805 | 2927 | { |
7918f24d NC |
2928 | PERL_ARGS_ASSERT_JMAYBE; |
2929 | ||
79072805 | 2930 | if (o->op_type == OP_LIST) { |
fafc274c | 2931 | OP * const o2 |
d4c19fe8 | 2932 | = newSVREF(newGVOP(OP_GV, 0, gv_fetchpvs(";", GV_ADD|GV_NOTQUAL, SVt_PV))); |
2fcb4757 | 2933 | o = convert(OP_JOIN, 0, op_prepend_elem(OP_LIST, o2, o)); |
79072805 LW |
2934 | } |
2935 | return o; | |
2936 | } | |
2937 | ||
985b9e54 GG |
2938 | PERL_STATIC_INLINE OP * |
2939 | S_op_std_init(pTHX_ OP *o) | |
2940 | { | |
2941 | I32 type = o->op_type; | |
2942 | ||
2943 | PERL_ARGS_ASSERT_OP_STD_INIT; | |
2944 | ||
2945 | if (PL_opargs[type] & OA_RETSCALAR) | |
2946 | scalar(o); | |
2947 | if (PL_opargs[type] & OA_TARGET && !o->op_targ) | |
2948 | o->op_targ = pad_alloc(type, SVs_PADTMP); | |
2949 | ||
2950 | return o; | |
2951 | } | |
2952 | ||
2953 | PERL_STATIC_INLINE OP * | |
2954 | S_op_integerize(pTHX_ OP *o) | |
2955 | { | |
2956 | I32 type = o->op_type; | |
2957 | ||
2958 | PERL_ARGS_ASSERT_OP_INTEGERIZE; | |
2959 | ||
2960 | /* integerize op, unless it happens to be C<-foo>. | |
2961 | * XXX should pp_i_negate() do magic string negation instead? */ | |
2962 | if ((PL_opargs[type] & OA_OTHERINT) && (PL_hints & HINT_INTEGER) | |
2963 | && !(type == OP_NEGATE && cUNOPo->op_first->op_type == OP_CONST | |
2964 | && (cUNOPo->op_first->op_private & OPpCONST_BARE))) | |
2965 | { | |
f5f19483 | 2966 | dVAR; |
985b9e54 GG |
2967 | o->op_ppaddr = PL_ppaddr[type = ++(o->op_type)]; |
2968 | } | |
2969 | ||
2970 | if (type == OP_NEGATE) | |
2971 | /* XXX might want a ck_negate() for this */ | |
2972 | cUNOPo->op_first->op_private &= ~OPpCONST_STRICT; | |
2973 | ||
2974 | return o; | |
2975 | } | |
2976 | ||
1f676739 | 2977 | static OP * |
b7783a12 | 2978 | S_fold_constants(pTHX_ register OP *o) |
79072805 | 2979 | { |
27da23d5 | 2980 | dVAR; |
001d637e | 2981 | register OP * VOL curop; |
eb8433b7 | 2982 | OP *newop; |
8ea43dc8 | 2983 | VOL I32 type = o->op_type; |
e3cbe32f | 2984 | SV * VOL sv = NULL; |
b7f7fd0b NC |
2985 | int ret = 0; |
2986 | I32 oldscope; | |
2987 | OP *old_next; | |
5f2d9966 DM |
2988 | SV * const oldwarnhook = PL_warnhook; |
2989 | SV * const olddiehook = PL_diehook; | |
c427f4d2 | 2990 | COP not_compiling; |
b7f7fd0b | 2991 | dJMPENV; |
79072805 | 2992 | |
7918f24d NC |
2993 | PERL_ARGS_ASSERT_FOLD_CONSTANTS; |
2994 | ||
22c35a8c | 2995 | if (!(PL_opargs[type] & OA_FOLDCONST)) |
79072805 LW |
2996 | goto nope; |
2997 | ||
de939608 | 2998 | switch (type) { |
de939608 CS |
2999 | case OP_UCFIRST: |
3000 | case OP_LCFIRST: | |
3001 | case OP_UC: | |
3002 | case OP_LC: | |
69dcf70c MB |
3003 | case OP_SLT: |
3004 | case OP_SGT: | |
3005 | case OP_SLE: | |
3006 | case OP_SGE: | |
3007 | case OP_SCMP: | |
b3fd6149 | 3008 | case OP_SPRINTF: |
2de3dbcc | 3009 | /* XXX what about the numeric ops? */ |
82ad65bb | 3010 | if (IN_LOCALE_COMPILETIME) |
de939608 | 3011 | goto nope; |
553e7bb0 | 3012 | break; |
de939608 CS |
3013 | } |
3014 | ||
13765c85 | 3015 | if (PL_parser && PL_parser->error_count) |
a0d0e21e LW |
3016 | goto nope; /* Don't try to run w/ errors */ |
3017 | ||
79072805 | 3018 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
1496a290 AL |
3019 | const OPCODE type = curop->op_type; |
3020 | if ((type != OP_CONST || (curop->op_private & OPpCONST_BARE)) && | |
3021 | type != OP_LIST && | |
3022 | type != OP_SCALAR && | |
3023 | type != OP_NULL && | |
3024 | type != OP_PUSHMARK) | |
7a52d87a | 3025 | { |
79072805 LW |
3026 | goto nope; |
3027 | } | |
3028 | } | |
3029 | ||
3030 | curop = LINKLIST(o); | |
b7f7fd0b | 3031 | old_next = o->op_next; |
79072805 | 3032 | o->op_next = 0; |
533c011a | 3033 | PL_op = curop; |
b7f7fd0b NC |
3034 | |
3035 | oldscope = PL_scopestack_ix; | |
edb2152a | 3036 | create_eval_scope(G_FAKINGEVAL); |
b7f7fd0b | 3037 | |
c427f4d2 NC |
3038 | /* Verify that we don't need to save it: */ |
3039 | assert(PL_curcop == &PL_compiling); | |
3040 | StructCopy(&PL_compiling, ¬_compiling, COP); | |
3041 | PL_curcop = ¬_compiling; | |
3042 | /* The above ensures that we run with all the correct hints of the | |
3043 | currently compiling COP, but that IN_PERL_RUNTIME is not true. */ | |
3044 | assert(IN_PERL_RUNTIME); | |
5f2d9966 DM |
3045 | PL_warnhook = PERL_WARNHOOK_FATAL; |
3046 | PL_diehook = NULL; | |
b7f7fd0b NC |
3047 | JMPENV_PUSH(ret); |
3048 | ||
3049 | switch (ret) { | |
3050 | case 0: | |
3051 | CALLRUNOPS(aTHX); | |
3052 | sv = *(PL_stack_sp--); | |
523a0f0c NC |
3053 | if (o->op_targ && sv == PAD_SV(o->op_targ)) { /* grab pad temp? */ |
3054 | #ifdef PERL_MAD | |
3055 | /* Can't simply swipe the SV from the pad, because that relies on | |
3056 | the op being freed "real soon now". Under MAD, this doesn't | |
3057 | happen (see the #ifdef below). */ | |
3058 | sv = newSVsv(sv); | |
3059 | #else | |
b7f7fd0b | 3060 | pad_swipe(o->op_targ, FALSE); |
523a0f0c NC |
3061 | #endif |
3062 | } | |
b7f7fd0b NC |
3063 | else if (SvTEMP(sv)) { /* grab mortal temp? */ |
3064 | SvREFCNT_inc_simple_void(sv); | |
3065 | SvTEMP_off(sv); | |
3066 | } | |
3067 | break; | |
3068 | case 3: | |
3069 | /* Something tried to die. Abandon constant folding. */ | |
3070 | /* Pretend the error never happened. */ | |
ab69dbc2 | 3071 | CLEAR_ERRSV(); |
b7f7fd0b NC |
3072 | o->op_next = old_next; |
3073 | break; | |
3074 | default: | |
3075 | JMPENV_POP; | |
5f2d9966 DM |
3076 | /* Don't expect 1 (setjmp failed) or 2 (something called my_exit) */ |
3077 | PL_warnhook = oldwarnhook; | |
3078 | PL_diehook = olddiehook; | |
3079 | /* XXX note that this croak may fail as we've already blown away | |
3080 | * the stack - eg any nested evals */ | |
b7f7fd0b NC |
3081 | Perl_croak(aTHX_ "panic: fold_constants JMPENV_PUSH returned %d", ret); |
3082 | } | |
b7f7fd0b | 3083 | JMPENV_POP; |
5f2d9966 DM |
3084 | PL_warnhook = oldwarnhook; |
3085 | PL_diehook = olddiehook; | |
c427f4d2 | 3086 | PL_curcop = &PL_compiling; |
edb2152a NC |
3087 | |
3088 | if (PL_scopestack_ix > oldscope) | |
3089 | delete_eval_scope(); | |
eb8433b7 | 3090 | |
b7f7fd0b NC |
3091 | if (ret) |
3092 | goto nope; | |
3093 | ||
eb8433b7 | 3094 | #ifndef PERL_MAD |
79072805 | 3095 | op_free(o); |
eb8433b7 | 3096 | #endif |
de5e01c2 | 3097 | assert(sv); |
79072805 | 3098 | if (type == OP_RV2GV) |
159b6efe | 3099 | newop = newGVOP(OP_GV, 0, MUTABLE_GV(sv)); |
eb8433b7 | 3100 | else |
ad64d0ec | 3101 | newop = newSVOP(OP_CONST, 0, MUTABLE_SV(sv)); |
eb8433b7 NC |
3102 | op_getmad(o,newop,'f'); |
3103 | return newop; | |
aeea060c | 3104 | |
b7f7fd0b | 3105 | nope: |
79072805 LW |
3106 | return o; |
3107 | } | |
3108 | ||
1f676739 | 3109 | static OP * |
b7783a12 | 3110 | S_gen_constant_list(pTHX_ register OP *o) |
79072805 | 3111 | { |
27da23d5 | 3112 | dVAR; |
79072805 | 3113 | register OP *curop; |
6867be6d | 3114 | const I32 oldtmps_floor = PL_tmps_floor; |
79072805 | 3115 | |
a0d0e21e | 3116 | list(o); |
13765c85 | 3117 | if (PL_parser && PL_parser->error_count) |
a0d0e21e LW |
3118 | return o; /* Don't attempt to run with errors */ |
3119 | ||
533c011a | 3120 | PL_op = curop = LINKLIST(o); |
a0d0e21e | 3121 | o->op_next = 0; |
a2efc822 | 3122 | CALL_PEEP(curop); |
897d3989 | 3123 | Perl_pp_pushmark(aTHX); |
cea2e8a9 | 3124 | CALLRUNOPS(aTHX); |
533c011a | 3125 | PL_op = curop; |
78c72037 NC |
3126 | assert (!(curop->op_flags & OPf_SPECIAL)); |
3127 | assert(curop->op_type == OP_RANGE); | |
897d3989 | 3128 | Perl_pp_anonlist(aTHX); |
3280af22 | 3129 | PL_tmps_floor = oldtmps_floor; |
79072805 LW |
3130 | |
3131 | o->op_type = OP_RV2AV; | |
22c35a8c | 3132 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
fb53bbb2 SG |
3133 | o->op_flags &= ~OPf_REF; /* treat \(1..2) like an ordinary list */ |
3134 | o->op_flags |= OPf_PARENS; /* and flatten \(1..2,3) */ | |
1a0a2ba9 | 3135 | o->op_opt = 0; /* needs to be revisited in rpeep() */ |
79072805 | 3136 | curop = ((UNOP*)o)->op_first; |
b37c2d43 | 3137 | ((UNOP*)o)->op_first = newSVOP(OP_CONST, 0, SvREFCNT_inc_NN(*PL_stack_sp--)); |
eb8433b7 NC |
3138 | #ifdef PERL_MAD |
3139 | op_getmad(curop,o,'O'); | |
3140 | #else | |
79072805 | 3141 | op_free(curop); |
eb8433b7 | 3142 | #endif |
5983a79d | 3143 | LINKLIST(o); |
79072805 LW |
3144 | return list(o); |
3145 | } | |
3146 | ||
3147 | OP * | |
864dbfa3 | 3148 | Perl_convert(pTHX_ I32 type, I32 flags, OP *o) |
79072805 | 3149 | { |
27da23d5 | 3150 | dVAR; |
d67594ff | 3151 | if (type < 0) type = -type, flags |= OPf_SPECIAL; |
11343788 | 3152 | if (!o || o->op_type != OP_LIST) |
5f66b61c | 3153 | o = newLISTOP(OP_LIST, 0, o, NULL); |
748a9306 | 3154 | else |
5dc0d613 | 3155 | o->op_flags &= ~OPf_WANT; |
79072805 | 3156 | |
22c35a8c | 3157 | if (!(PL_opargs[type] & OA_MARK)) |
93c66552 | 3158 | op_null(cLISTOPo->op_first); |
bf0571fd FC |
3159 | else { |
3160 | OP * const kid2 = cLISTOPo->op_first->op_sibling; | |
3161 | if (kid2 && kid2->op_type == OP_COREARGS) { | |
3162 | op_null(cLISTOPo->op_first); | |
3163 | kid2->op_private |= OPpCOREARGS_PUSHMARK; | |
3164 | } | |
3165 | } | |
8990e307 | 3166 | |
eb160463 | 3167 | o->op_type = (OPCODE)type; |
22c35a8c | 3168 | o->op_ppaddr = PL_ppaddr[type]; |
11343788 | 3169 | o->op_flags |= flags; |
79072805 | 3170 | |
11343788 | 3171 | o = CHECKOP(type, o); |
fe2774ed | 3172 | if (o->op_type != (unsigned)type) |
11343788 | 3173 | return o; |
79072805 | 3174 | |
985b9e54 | 3175 | return fold_constants(op_integerize(op_std_init(o))); |
79072805 LW |
3176 | } |
3177 | ||
2fcb4757 Z |
3178 | /* |
3179 | =head1 Optree Manipulation Functions | |
3180 | */ | |
3181 | ||
79072805 LW |
3182 | /* List constructors */ |
3183 | ||
2fcb4757 Z |
3184 | /* |
3185 | =for apidoc Am|OP *|op_append_elem|I32 optype|OP *first|OP *last | |
3186 | ||
3187 | Append an item to the list of ops contained directly within a list-type | |
3188 | op, returning the lengthened list. I<first> is the list-type op, | |
3189 | and I<last> is the op to append to the list. I<optype> specifies the | |
3190 | intended opcode for the list. If I<first> is not already a list of the | |
3191 | right type, it will be upgraded into one. If either I<first> or I<last> | |
3192 | is null, the other is returned unchanged. | |
3193 | ||
3194 | =cut | |
3195 | */ | |
3196 | ||
79072805 | 3197 | OP * |
2fcb4757 | 3198 | Perl_op_append_elem(pTHX_ I32 type, OP *first, OP *last) |
79072805 LW |
3199 | { |
3200 | if (!first) | |
3201 | return last; | |
8990e307 LW |
3202 | |
3203 | if (!last) | |
79072805 | 3204 | return first; |
8990e307 | 3205 | |
fe2774ed | 3206 | if (first->op_type != (unsigned)type |
155aba94 GS |
3207 | || (type == OP_LIST && (first->op_flags & OPf_PARENS))) |
3208 | { | |
3209 | return newLISTOP(type, 0, first, last); | |
3210 | } | |
79072805 | 3211 | |
a0d0e21e LW |
3212 | if (first->op_flags & OPf_KIDS) |
3213 | ((LISTOP*)first)->op_last->op_sibling = last; | |
3214 | else { | |
3215 | first->op_flags |= OPf_KIDS; | |
3216 | ((LISTOP*)first)->op_first = last; | |
3217 | } | |
3218 | ((LISTOP*)first)->op_last = last; | |
a0d0e21e | 3219 | return first; |
79072805 LW |
3220 | } |
3221 | ||
2fcb4757 Z |
3222 | /* |
3223 | =for apidoc Am|OP *|op_append_list|I32 optype|OP *first|OP *last | |
3224 | ||
3225 | Concatenate the lists of ops contained directly within two list-type ops, | |
3226 | returning the combined list. I<first> and I<last> are the list-type ops | |
3227 | to concatenate. I<optype> specifies the intended opcode for the list. | |
3228 | If either I<first> or I<last> is not already a list of the right type, | |
3229 | it will be upgraded into one. If either I<first> or I<last> is null, | |
3230 | the other is returned unchanged. | |
3231 | ||
3232 | =cut | |
3233 | */ | |
3234 | ||
79072805 | 3235 | OP * |
2fcb4757 | 3236 | Perl_op_append_list(pTHX_ I32 type, OP *first, OP *last) |
79072805 LW |
3237 | { |
3238 | if (!first) | |
2fcb4757 | 3239 | return last; |
8990e307 LW |
3240 | |
3241 | if (!last) | |
2fcb4757 | 3242 | return first; |
8990e307 | 3243 | |
fe2774ed | 3244 | if (first->op_type != (unsigned)type) |
2fcb4757 | 3245 | return op_prepend_elem(type, first, last); |
8990e307 | 3246 | |
fe2774ed | 3247 | if (last->op_type != (unsigned)type) |
2fcb4757 | 3248 | return op_append_elem(type, first, last); |
79072805 | 3249 | |
2fcb4757 Z |
3250 | ((LISTOP*)first)->op_last->op_sibling = ((LISTOP*)last)->op_first; |
3251 | ((LISTOP*)first)->op_last = ((LISTOP*)last)->op_last; | |
117dada2 | 3252 | first->op_flags |= (last->op_flags & OPf_KIDS); |
1c846c1f | 3253 | |
eb8433b7 | 3254 | #ifdef PERL_MAD |
2fcb4757 Z |
3255 | if (((LISTOP*)last)->op_first && first->op_madprop) { |
3256 | MADPROP *mp = ((LISTOP*)last)->op_first->op_madprop; | |
eb8433b7 NC |
3257 | if (mp) { |
3258 | while (mp->mad_next) | |
3259 | mp = mp->mad_next; | |
3260 | mp->mad_next = first->op_madprop; | |
3261 | } | |
3262 | else { | |
2fcb4757 | 3263 | ((LISTOP*)last)->op_first->op_madprop = first->op_madprop; |
eb8433b7 NC |
3264 | } |
3265 | } | |
3266 | first->op_madprop = last->op_madprop; | |
3267 | last->op_madprop = 0; | |
3268 | #endif | |
3269 | ||
2fcb4757 | 3270 | S_op_destroy(aTHX_ last); |
238a4c30 | 3271 | |
2fcb4757 | 3272 | return first; |
79072805 LW |
3273 | } |
3274 | ||
2fcb4757 Z |
3275 | /* |
3276 | =for apidoc Am|OP *|op_prepend_elem|I32 optype|OP *first|OP *last | |
3277 | ||
3278 | Prepend an item to the list of ops contained directly within a list-type | |
3279 | op, returning the lengthened list. I<first> is the op to prepend to the | |
3280 | list, and I<last> is the list-type op. I<optype> specifies the intended | |
3281 | opcode for the list. If I<last> is not already a list of the right type, | |
3282 | it will be upgraded into one. If either I<first> or I<last> is null, | |
3283 | the other is returned unchanged. | |
3284 | ||
3285 | =cut | |
3286 | */ | |
3287 | ||
79072805 | 3288 | OP * |
2fcb4757 | 3289 | Perl_op_prepend_elem(pTHX_ I32 type, OP *first, OP *last) |
79072805 LW |
3290 | { |
3291 | if (!first) | |
3292 | return last; | |
8990e307 LW |
3293 | |
3294 | if (!last) | |
79072805 | 3295 | return first; |
8990e307 | 3296 | |
fe2774ed | 3297 | if (last->op_type == (unsigned)type) { |
8990e307 LW |
3298 | if (type == OP_LIST) { /* already a PUSHMARK there */ |
3299 | first->op_sibling = ((LISTOP*)last)->op_first->op_sibling; | |
3300 | ((LISTOP*)last)->op_first->op_sibling = first; | |
36a5d4ba DC |
3301 | if (!(first->op_flags & OPf_PARENS)) |
3302 | last->op_flags &= ~OPf_PARENS; | |
8990e307 LW |
3303 | } |
3304 | else { | |
3305 | if (!(last->op_flags & OPf_KIDS)) { | |
3306 | ((LISTOP*)last)->op_last = first; | |
3307 | last->op_flags |= OPf_KIDS; | |
3308 | } | |
3309 | first->op_sibling = ((LISTOP*)last)->op_first; | |
3310 | ((LISTOP*)last)->op_first = first; | |
79072805 | 3311 | } |
117dada2 | 3312 | last->op_flags |= OPf_KIDS; |
79072805 LW |
3313 | return last; |
3314 | } | |
3315 | ||
3316 | return newLISTOP(type, 0, first, last); | |
3317 | } | |
3318 | ||
3319 | /* Constructors */ | |
3320 | ||
eb8433b7 NC |
3321 | #ifdef PERL_MAD |
3322 | ||
3323 | TOKEN * | |
3324 | Perl_newTOKEN(pTHX_ I32 optype, YYSTYPE lval, MADPROP* madprop) | |
3325 | { | |
3326 | TOKEN *tk; | |
99129197 | 3327 | Newxz(tk, 1, TOKEN); |
eb8433b7 NC |
3328 | tk->tk_type = (OPCODE)optype; |
3329 | tk->tk_type = 12345; | |
3330 | tk->tk_lval = lval; | |
3331 | tk->tk_mad = madprop; | |
3332 | return tk; | |
3333 | } | |
3334 | ||
3335 | void | |
3336 | Perl_token_free(pTHX_ TOKEN* tk) | |
3337 | { | |
7918f24d NC |
3338 | PERL_ARGS_ASSERT_TOKEN_FREE; |
3339 | ||
eb8433b7 NC |
3340 | if (tk->tk_type != 12345) |
3341 | return; | |
3342 | mad_free(tk->tk_mad); | |
3343 | Safefree(tk); | |
3344 | } | |
3345 | ||
3346 | void | |
3347 | Perl_token_getmad(pTHX_ TOKEN* tk, OP* o, char slot) | |
3348 | { | |
3349 | MADPROP* mp; | |
3350 | MADPROP* tm; | |
7918f24d NC |
3351 | |
3352 | PERL_ARGS_ASSERT_TOKEN_GETMAD; | |
3353 | ||
eb8433b7 NC |
3354 | if (tk->tk_type != 12345) { |
3355 | Perl_warner(aTHX_ packWARN(WARN_MISC), | |
3356 | "Invalid TOKEN object ignored"); | |
3357 | return; | |
3358 | } | |
3359 | tm = tk->tk_mad; | |
3360 | if (!tm) | |
3361 | return; | |
3362 | ||
3363 | /* faked up qw list? */ | |
3364 | if (slot == '(' && | |
3365 | tm->mad_type == MAD_SV && | |
d503a9ba | 3366 | SvPVX((SV *)tm->mad_val)[0] == 'q') |
eb8433b7 NC |
3367 | slot = 'x'; |
3368 | ||
3369 | if (o) { | |
3370 | mp = o->op_madprop; | |
3371 | if (mp) { | |
3372 | for (;;) { | |
3373 | /* pretend constant fold didn't happen? */ | |
3374 | if (mp->mad_key == 'f' && | |
3375 | (o->op_type == OP_CONST || | |
3376 | o->op_type == OP_GV) ) | |
3377 | { | |
3378 | token_getmad(tk,(OP*)mp->mad_val,slot); | |
3379 | return; | |
3380 | } | |
3381 | if (!mp->mad_next) | |
3382 | break; | |
3383 | mp = mp->mad_next; | |
3384 | } | |
3385 | mp->mad_next = tm; | |
3386 | mp = mp->mad_next; | |
3387 | } | |
3388 | else { | |
3389 | o->op_madprop = tm; | |
3390 | mp = o->op_madprop; | |
3391 | } | |
3392 | if (mp->mad_key == 'X') | |
3393 | mp->mad_key = slot; /* just change the first one */ | |
3394 | ||
3395 | tk->tk_mad = 0; | |
3396 | } | |
3397 | else | |
3398 | mad_free(tm); | |
3399 | Safefree(tk); | |
3400 | } | |
3401 | ||
3402 | void | |
3403 | Perl_op_getmad_weak(pTHX_ OP* from, OP* o, char slot) | |
3404 | { | |
3405 | MADPROP* mp; | |
3406 | if (!from) | |
3407 | return; | |
3408 | if (o) { | |
3409 | mp = o->op_madprop; | |
3410 | if (mp) { | |
3411 | for (;;) { | |
3412 | /* pretend constant fold didn't happen? */ | |
3413 | if (mp->mad_key == 'f' && | |
3414 | (o->op_type == OP_CONST || | |
3415 | o->op_type == OP_GV) ) | |
3416 | { | |
3417 | op_getmad(from,(OP*)mp->mad_val,slot); | |
3418 | return; | |
3419 | } | |
3420 | if (!mp->mad_next) | |
3421 | break; | |
3422 | mp = mp->mad_next; | |
3423 | } | |
3424 | mp->mad_next = newMADPROP(slot,MAD_OP,from,0); | |
3425 | } | |
3426 | else { | |
3427 | o->op_madprop = newMADPROP(slot,MAD_OP,from,0); | |
3428 | } | |
3429 | } | |
3430 | } | |
3431 | ||
3432 | void | |
3433 | Perl_op_getmad(pTHX_ OP* from, OP* o, char slot) | |
3434 | { | |
3435 | MADPROP* mp; | |
3436 | if (!from) | |
3437 | return; | |
3438 | if (o) { | |
3439 | mp = o->op_madprop; | |
3440 | if (mp) { | |
3441 | for (;;) { | |
3442 | /* pretend constant fold didn't happen? */ | |
3443 | if (mp->mad_key == 'f' && | |
3444 | (o->op_type == OP_CONST || | |
3445 | o->op_type == OP_GV) ) | |
3446 | { | |
3447 | op_getmad(from,(OP*)mp->mad_val,slot); | |
3448 | return; | |
3449 | } | |
3450 | if (!mp->mad_next) | |
3451 | break; | |
3452 | mp = mp->mad_next; | |
3453 | } | |
3454 | mp->mad_next = newMADPROP(slot,MAD_OP,from,1); | |
3455 | } | |
3456 | else { | |
3457 | o->op_madprop = newMADPROP(slot,MAD_OP,from,1); | |
3458 | } | |
3459 | } | |
3460 | else { | |
99129197 NC |
3461 | PerlIO_printf(PerlIO_stderr(), |
3462 | "DESTROYING op = %0"UVxf"\n", PTR2UV(from)); | |
eb8433b7 NC |
3463 | op_free(from); |
3464 | } | |
3465 | } | |
3466 | ||
3467 | void | |
3468 | Perl_prepend_madprops(pTHX_ MADPROP* mp, OP* o, char slot) | |
3469 | { | |
3470 | MADPROP* tm; | |
3471 | if (!mp || !o) | |
3472 | return; | |
3473 | if (slot) | |
3474 | mp->mad_key = slot; | |
3475 | tm = o->op_madprop; | |
3476 | o->op_madprop = mp; | |
3477 | for (;;) { | |
3478 | if (!mp->mad_next) | |
3479 | break; | |
3480 | mp = mp->mad_next; | |
3481 | } | |
3482 | mp->mad_next = tm; | |
3483 | } | |
3484 | ||
3485 | void | |
3486 | Perl_append_madprops(pTHX_ MADPROP* tm, OP* o, char slot) | |
3487 | { | |
3488 | if (!o) | |
3489 | return; | |
3490 | addmad(tm, &(o->op_madprop), slot); | |
3491 | } | |
3492 | ||
3493 | void | |
3494 | Perl_addmad(pTHX_ MADPROP* tm, MADPROP** root, char slot) | |
3495 | { | |
3496 | MADPROP* mp; | |
3497 | if (!tm || !root) | |
3498 | return; | |
3499 | if (slot) | |
3500 | tm->mad_key = slot; | |
3501 | mp = *root; | |
3502 | if (!mp) { | |
3503 | *root = tm; | |
3504 | return; | |
3505 | } | |
3506 | for (;;) { | |
3507 | if (!mp->mad_next) | |
3508 | break; | |
3509 | mp = mp->mad_next; | |
3510 | } | |
3511 | mp->mad_next = tm; | |
3512 | } | |
3513 | ||
3514 | MADPROP * | |
3515 | Perl_newMADsv(pTHX_ char key, SV* sv) | |
3516 | { | |
7918f24d NC |
3517 | PERL_ARGS_ASSERT_NEWMADSV; |
3518 | ||
eb8433b7 NC |
3519 | return newMADPROP(key, MAD_SV, sv, 0); |
3520 | } | |
3521 | ||
3522 | MADPROP * | |
d503a9ba | 3523 | Perl_newMADPROP(pTHX_ char key, char type, void* val, I32 vlen) |
eb8433b7 | 3524 | { |
c111d5f1 | 3525 | MADPROP *const mp = (MADPROP *) PerlMemShared_malloc(sizeof(MADPROP)); |
eb8433b7 NC |
3526 | mp->mad_next = 0; |
3527 | mp->mad_key = key; | |
3528 | mp->mad_vlen = vlen; | |
3529 | mp->mad_type = type; | |
3530 | mp->mad_val = val; | |
3531 | /* PerlIO_printf(PerlIO_stderr(), "NEW mp = %0x\n", mp); */ | |
3532 | return mp; | |
3533 | } | |
3534 | ||
3535 | void | |
3536 | Perl_mad_free(pTHX_ MADPROP* mp) | |
3537 | { | |
3538 | /* PerlIO_printf(PerlIO_stderr(), "FREE mp = %0x\n", mp); */ | |
3539 | if (!mp) | |
3540 | return; | |
3541 | if (mp->mad_next) | |
3542 | mad_free(mp->mad_next); | |
bc177e6b | 3543 | /* if (PL_parser && PL_parser->lex_state != LEX_NOTPARSING && mp->mad_vlen) |
eb8433b7 NC |
3544 | PerlIO_printf(PerlIO_stderr(), "DESTROYING '%c'=<%s>\n", mp->mad_key & 255, mp->mad_val); */ |
3545 | switch (mp->mad_type) { | |
3546 | case MAD_NULL: | |
3547 | break; | |
3548 | case MAD_PV: | |
3549 | Safefree((char*)mp->mad_val); | |
3550 | break; | |
3551 | case MAD_OP: | |
3552 | if (mp->mad_vlen) /* vlen holds "strong/weak" boolean */ | |
3553 | op_free((OP*)mp->mad_val); | |
3554 | break; | |
3555 | case MAD_SV: | |
ad64d0ec | 3556 | sv_free(MUTABLE_SV(mp->mad_val)); |
eb8433b7 NC |
3557 | break; |
3558 | default: | |
3559 | PerlIO_printf(PerlIO_stderr(), "Unrecognized mad\n"); | |
3560 | break; | |
3561 | } | |
c111d5f1 | 3562 | PerlMemShared_free(mp); |
eb8433b7 NC |
3563 | } |
3564 | ||
3565 | #endif | |
3566 | ||
d67eb5f4 Z |
3567 | /* |
3568 | =head1 Optree construction | |
3569 | ||
3570 | =for apidoc Am|OP *|newNULLLIST | |
3571 | ||
3572 | Constructs, checks, and returns a new C<stub> op, which represents an | |
3573 | empty list expression. | |
3574 | ||
3575 | =cut | |
3576 | */ | |
3577 | ||
79072805 | 3578 | OP * |
864dbfa3 | 3579 | Perl_newNULLLIST(pTHX) |
79072805 | 3580 | { |
8990e307 LW |
3581 | return newOP(OP_STUB, 0); |
3582 | } | |
3583 | ||
1f676739 | 3584 | static OP * |
b7783a12 | 3585 | S_force_list(pTHX_ OP *o) |
8990e307 | 3586 | { |
11343788 | 3587 | if (!o || o->op_type != OP_LIST) |
5f66b61c | 3588 | o = newLISTOP(OP_LIST, 0, o, NULL); |
93c66552 | 3589 | op_null(o); |
11343788 | 3590 | return o; |
79072805 LW |
3591 | } |
3592 | ||
d67eb5f4 Z |
3593 | /* |
3594 | =for apidoc Am|OP *|newLISTOP|I32 type|I32 flags|OP *first|OP *last | |
3595 | ||
3596 | Constructs, checks, and returns an op of any list type. I<type> is | |
3597 | the opcode. I<flags> gives the eight bits of C<op_flags>, except that | |
3598 | C<OPf_KIDS> will be set automatically if required. I<first> and I<last> | |
3599 | supply up to two ops to be direct children of the list op; they are | |
3600 | consumed by this function and become part of the constructed op tree. | |
3601 | ||
3602 | =cut | |
3603 | */ | |
3604 | ||
79072805 | 3605 | OP * |
864dbfa3 | 3606 | Perl_newLISTOP(pTHX_ I32 type, I32 flags, OP *first, OP *last) |
79072805 | 3607 | { |
27da23d5 | 3608 | dVAR; |
79072805 LW |
3609 | LISTOP *listop; |
3610 | ||
e69777c1 GG |
3611 | assert((PL_opargs[type] & OA_CLASS_MASK) == OA_LISTOP); |
3612 | ||
b7dc083c | 3613 | NewOp(1101, listop, 1, LISTOP); |
79072805 | 3614 | |
eb160463 | 3615 | listop->op_type = (OPCODE)type; |
22c35a8c | 3616 | listop->op_ppaddr = PL_ppaddr[type]; |
117dada2 SM |
3617 | if (first || last) |
3618 | flags |= OPf_KIDS; | |
eb160463 | 3619 | listop->op_flags = (U8)flags; |
79072805 LW |
3620 | |
3621 | if (!last && first) | |
3622 | last = first; | |
3623 | else if (!first && last) | |
3624 | first = last; | |
8990e307 LW |
3625 | else if (first) |
3626 | first->op_sibling = last; | |
79072805 LW |
3627 | listop->op_first = first; |
3628 | listop->op_last = last; | |
8990e307 | 3629 | if (type == OP_LIST) { |
551405c4 | 3630 | OP* const pushop = newOP(OP_PUSHMARK, 0); |
8990e307 LW |
3631 | pushop->op_sibling = first; |
3632 | listop->op_first = pushop; | |
3633 | listop->op_flags |= OPf_KIDS; | |
3634 | if (!last) | |
3635 | listop->op_last = pushop; | |
3636 | } | |
79072805 | 3637 | |
463d09e6 | 3638 | return CHECKOP(type, listop); |
79072805 LW |
3639 | } |
3640 | ||
d67eb5f4 Z |
3641 | /* |
3642 | =for apidoc Am|OP *|newOP|I32 type|I32 flags | |
3643 | ||
3644 | Constructs, checks, and returns an op of any base type (any type that | |
3645 | has no extra fields). I<type> is the opcode. I<flags> gives the | |
3646 | eight bits of C<op_flags>, and, shifted up eight bits, the eight bits | |
3647 | of C<op_private>. | |
3648 | ||
3649 | =cut | |
3650 | */ | |
3651 | ||
79072805 | 3652 | OP * |
864dbfa3 | 3653 | Perl_newOP(pTHX_ I32 type, I32 flags) |
79072805 | 3654 | { |
27da23d5 | 3655 | dVAR; |
11343788 | 3656 | OP *o; |
e69777c1 | 3657 | |
7d789282 FC |
3658 | if (type == -OP_ENTEREVAL) { |
3659 | type = OP_ENTEREVAL; | |
3660 | flags |= OPpEVAL_BYTES<<8; | |
3661 | } | |
3662 | ||
e69777c1 GG |
3663 | assert((PL_opargs[type] & OA_CLASS_MASK) == OA_BASEOP |
3664 | || (PL_opargs[type] & OA_CLASS_MASK) == OA_BASEOP_OR_UNOP | |
3665 | || (PL_opargs[type] & OA_CLASS_MASK) == OA_FILESTATOP | |
3666 | || (PL_opargs[type] & OA_CLASS_MASK) == OA_LOOPEXOP); | |
3667 | ||
b7dc083c | 3668 | NewOp(1101, o, 1, OP); |
eb160463 | 3669 | o->op_type = (OPCODE)type; |
22c35a8c | 3670 | o->op_ppaddr = PL_ppaddr[type]; |
eb160463 | 3671 | o->op_flags = (U8)flags; |
670f3923 DM |
3672 | o->op_latefree = 0; |
3673 | o->op_latefreed = 0; | |
7e5d8ed2 | 3674 | o->op_attached = 0; |
79072805 | 3675 | |
11343788 | 3676 | o->op_next = o; |
eb160463 | 3677 | o->op_private = (U8)(0 | (flags >> 8)); |
22c35a8c | 3678 | if (PL_opargs[type] & OA_RETSCALAR) |
11343788 | 3679 | scalar(o); |
22c35a8c | 3680 | if (PL_opargs[type] & OA_TARGET) |
11343788 MB |
3681 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
3682 | return CHECKOP(type, o); | |
79072805 LW |
3683 | } |
3684 | ||
d67eb5f4 Z |
3685 | /* |
3686 | =for apidoc Am|OP *|newUNOP|I32 type|I32 flags|OP *first | |
3687 | ||
3688 | Constructs, checks, and returns an op of any unary type. I<type> is | |
3689 | the opcode. I<flags> gives the eight bits of C<op_flags>, except that | |
3690 | C<OPf_KIDS> will be set automatically if required, and, shifted up eight | |
3691 | bits, the eight bits of C<op_private>, except that the bit with value 1 | |
3692 | is automatically set. I<first> supplies an optional op to be the direct | |
3693 | child of the unary op; it is consumed by this function and become part | |
3694 | of the constructed op tree. | |
3695 | ||
3696 | =cut | |
3697 | */ | |
3698 | ||
79072805 | 3699 | OP * |
864dbfa3 | 3700 | Perl_newUNOP(pTHX_ I32 type, I32 flags, OP *first) |
79072805 | 3701 | { |
27da23d5 | 3702 | dVAR; |
79072805 LW |
3703 | UNOP *unop; |
3704 | ||
7d789282 FC |
3705 | if (type == -OP_ENTEREVAL) { |
3706 | type = OP_ENTEREVAL; | |
3707 | flags |= OPpEVAL_BYTES<<8; | |
3708 | } | |
3709 | ||
e69777c1 GG |
3710 | assert((PL_opargs[type] & OA_CLASS_MASK) == OA_UNOP |
3711 | || (PL_opargs[type] & OA_CLASS_MASK) == OA_BASEOP_OR_UNOP | |
3712 | || (PL_opargs[type] & OA_CLASS_MASK) == OA_FILESTATOP | |
3713 | || (PL_opargs[type] & OA_CLASS_MASK) == OA_LOOPEXOP | |
3714 | || type == OP_SASSIGN | |
32e2a35d | 3715 | || type == OP_ENTERTRY |
e69777c1 GG |
3716 | || type == OP_NULL ); |
3717 | ||
93a17b20 | 3718 | if (!first) |
aeea060c | 3719 | first = newOP(OP_STUB, 0); |
22c35a8c | 3720 | if (PL_opargs[type] & OA_MARK) |
8990e307 | 3721 | first = force_list(first); |
93a17b20 | 3722 | |
b7dc083c | 3723 | NewOp(1101, unop, 1, UNOP); |
eb160463 | 3724 | unop->op_type = (OPCODE)type; |
22c35a8c | 3725 | unop->op_ppaddr = PL_ppaddr[type]; |
79072805 | 3726 | unop->op_first = first; |
585ec06d | 3727 | unop->op_flags = (U8)(flags | OPf_KIDS); |
eb160463 | 3728 | unop->op_private = (U8)(1 | (flags >> 8)); |
e50aee73 | 3729 | unop = (UNOP*) CHECKOP(type, unop); |
79072805 LW |
3730 | if (unop->op_next) |
3731 | return (OP*)unop; | |
3732 | ||
985b9e54 | 3733 | return fold_constants(op_integerize(op_std_init((OP *) unop))); |
79072805 LW |
3734 | } |
3735 | ||
d67eb5f4 Z |
3736 | /* |
3737 | =for apidoc Am|OP *|newBINOP|I32 type|I32 flags|OP *first|OP *last | |
3738 | ||
3739 | Constructs, checks, and returns an op of any binary type. I<type> | |
3740 | is the opcode. I<flags> gives the eight bits of C<op_flags>, except | |
3741 | that C<OPf_KIDS> will be set automatically, and, shifted up eight bits, | |
3742 | the eight bits of C<op_private>, except that the bit with value 1 or | |
3743 | 2 is automatically set as required. I<first> and I<last> supply up to | |
3744 | two ops to be the direct children of the binary op; they are consumed | |
3745 | by this function and become part of the constructed op tree. | |
3746 | ||
3747 | =cut | |
3748 | */ | |
3749 | ||
79072805 | 3750 | OP * |
864dbfa3 | 3751 | Perl_newBINOP(pTHX_ I32 type, I32 flags, OP *first, OP *last) |
79072805 | 3752 | { |
27da23d5 | 3753 | dVAR; |
79072805 | 3754 | BINOP *binop; |
e69777c1 GG |
3755 | |
3756 | assert((PL_opargs[type] & OA_CLASS_MASK) == OA_BINOP | |
3757 | || type == OP_SASSIGN || type == OP_NULL ); | |
3758 | ||
b7dc083c | 3759 | NewOp(1101, binop, 1, BINOP); |
79072805 LW |
3760 | |
3761 | if (!first) | |
3762 | first = newOP(OP_NULL, 0); | |
3763 | ||
eb160463 | 3764 | binop->op_type = (OPCODE)type; |
22c35a8c | 3765 | binop->op_ppaddr = PL_ppaddr[type]; |
79072805 | 3766 | binop->op_first = first; |
585ec06d | 3767 | binop->op_flags = (U8)(flags | OPf_KIDS); |
79072805 LW |
3768 | if (!last) { |
3769 | last = first; | |
eb160463 | 3770 | binop->op_private = (U8)(1 | (flags >> 8)); |
79072805 LW |
3771 | } |
3772 | else { | |
eb160463 | 3773 | binop->op_private = (U8)(2 | (flags >> 8)); |
79072805 LW |
3774 | first->op_sibling = last; |
3775 | } | |
3776 | ||
e50aee73 | 3777 | binop = (BINOP*)CHECKOP(type, binop); |
eb160463 | 3778 | if (binop->op_next || binop->op_type != (OPCODE)type) |
79072805 LW |
3779 | return (OP*)binop; |
3780 | ||
7284ab6f | 3781 | binop->op_last = binop->op_first->op_sibling; |
79072805 | 3782 | |
985b9e54 | 3783 | return fold_constants(op_integerize(op_std_init((OP *)binop))); |
79072805 LW |
3784 | } |
3785 | ||
5f66b61c AL |
3786 | static int uvcompare(const void *a, const void *b) |
3787 | __attribute__nonnull__(1) | |
3788 | __attribute__nonnull__(2) | |
3789 | __attribute__pure__; | |
abb2c242 | 3790 | static int uvcompare(const void *a, const void *b) |
2b9d42f0 | 3791 | { |
e1ec3a88 | 3792 | if (*((const UV *)a) < (*(const UV *)b)) |
2b9d42f0 | 3793 | return -1; |
e1ec3a88 | 3794 | if (*((const UV *)a) > (*(const UV *)b)) |
2b9d42f0 | 3795 | return 1; |
e1ec3a88 | 3796 | if (*((const UV *)a+1) < (*(const UV *)b+1)) |
2b9d42f0 | 3797 | return -1; |
e1ec3a88 | 3798 | if (*((const UV *)a+1) > (*(const UV *)b+1)) |
2b9d42f0 | 3799 | return 1; |
a0ed51b3 LW |
3800 | return 0; |
3801 | } | |
3802 | ||
0d86688d NC |
3803 | static OP * |
3804 | S_pmtrans(pTHX_ OP *o, OP *expr, OP *repl) | |
79072805 | 3805 | { |
97aff369 | 3806 | dVAR; |
2d03de9c | 3807 | SV * const tstr = ((SVOP*)expr)->op_sv; |
fbbb0949 DM |
3808 | SV * const rstr = |
3809 | #ifdef PERL_MAD | |
3810 | (repl->op_type == OP_NULL) | |
3811 | ? ((SVOP*)((LISTOP*)repl)->op_first)->op_sv : | |
3812 | #endif | |
3813 | ((SVOP*)repl)->op_sv; | |
463ee0b2 LW |
3814 | STRLEN tlen; |
3815 | STRLEN rlen; | |
5c144d81 NC |
3816 | const U8 *t = (U8*)SvPV_const(tstr, tlen); |
3817 | const U8 *r = (U8*)SvPV_const(rstr, rlen); | |
79072805 LW |
3818 | register I32 i; |
3819 | register I32 j; | |
9b877dbb | 3820 | I32 grows = 0; |
79072805 LW |
3821 | register short *tbl; |
3822 | ||
551405c4 AL |
3823 | const I32 complement = o->op_private & OPpTRANS_COMPLEMENT; |
3824 | const I32 squash = o->op_private & OPpTRANS_SQUASH; | |
3825 | I32 del = o->op_private & OPpTRANS_DELETE; | |
043e41b8 | 3826 | SV* swash; |
7918f24d NC |
3827 | |
3828 | PERL_ARGS_ASSERT_PMTRANS; | |
3829 | ||
800b4dc4 | 3830 | PL_hints |= HINT_BLOCK_SCOPE; |
1c846c1f | 3831 | |
036b4402 GS |
3832 | if (SvUTF8(tstr)) |
3833 | o->op_private |= OPpTRANS_FROM_UTF; | |
1c846c1f NIS |
3834 | |
3835 | if (SvUTF8(rstr)) | |
036b4402 | 3836 | o->op_private |= OPpTRANS_TO_UTF; |
79072805 | 3837 | |
a0ed51b3 | 3838 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { |
396482e1 | 3839 | SV* const listsv = newSVpvs("# comment\n"); |
c445ea15 | 3840 | SV* transv = NULL; |
5c144d81 NC |
3841 | const U8* tend = t + tlen; |
3842 | const U8* rend = r + rlen; | |
ba210ebe | 3843 | STRLEN ulen; |
84c133a0 RB |
3844 | UV tfirst = 1; |
3845 | UV tlast = 0; | |
3846 | IV tdiff; | |
3847 | UV rfirst = 1; | |
3848 | UV rlast = 0; | |
3849 | IV rdiff; | |
3850 | IV diff; | |
a0ed51b3 LW |
3851 | I32 none = 0; |
3852 | U32 max = 0; | |
3853 | I32 bits; | |
a0ed51b3 | 3854 | I32 havefinal = 0; |
9c5ffd7c | 3855 | U32 final = 0; |
551405c4 AL |
3856 | const I32 from_utf = o->op_private & OPpTRANS_FROM_UTF; |
3857 | const I32 to_utf = o->op_private & OPpTRANS_TO_UTF; | |
bf4a1e57 JH |
3858 | U8* tsave = NULL; |
3859 | U8* rsave = NULL; | |
9f7f3913 | 3860 | const U32 flags = UTF8_ALLOW_DEFAULT; |
bf4a1e57 JH |
3861 | |
3862 | if (!from_utf) { | |
3863 | STRLEN len = tlen; | |
5c144d81 | 3864 | t = tsave = bytes_to_utf8(t, &len); |
bf4a1e57 JH |
3865 | tend = t + len; |
3866 | } | |
3867 | if (!to_utf && rlen) { | |
3868 | STRLEN len = rlen; | |
5c144d81 | 3869 | r = rsave = bytes_to_utf8(r, &len); |
bf4a1e57 JH |
3870 | rend = r + len; |
3871 | } | |
a0ed51b3 | 3872 | |
2b9d42f0 NIS |
3873 | /* There are several snags with this code on EBCDIC: |
3874 | 1. 0xFF is a legal UTF-EBCDIC byte (there are no illegal bytes). | |
3875 | 2. scan_const() in toke.c has encoded chars in native encoding which makes | |
3876 | ranges at least in EBCDIC 0..255 range the bottom odd. | |
3877 | */ | |
3878 | ||
a0ed51b3 | 3879 | if (complement) { |
89ebb4a3 | 3880 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
2b9d42f0 | 3881 | UV *cp; |
a0ed51b3 | 3882 | UV nextmin = 0; |
a02a5408 | 3883 | Newx(cp, 2*tlen, UV); |
a0ed51b3 | 3884 | i = 0; |
396482e1 | 3885 | transv = newSVpvs(""); |
a0ed51b3 | 3886 | while (t < tend) { |
9f7f3913 | 3887 | cp[2*i] = utf8n_to_uvuni(t, tend-t, &ulen, flags); |
2b9d42f0 NIS |
3888 | t += ulen; |
3889 | if (t < tend && NATIVE_TO_UTF(*t) == 0xff) { | |
a0ed51b3 | 3890 | t++; |
9f7f3913 | 3891 | cp[2*i+1] = utf8n_to_uvuni(t, tend-t, &ulen, flags); |
2b9d42f0 | 3892 | t += ulen; |
a0ed51b3 | 3893 | } |
2b9d42f0 NIS |
3894 | else { |
3895 | cp[2*i+1] = cp[2*i]; | |
3896 | } | |
3897 | i++; | |
a0ed51b3 | 3898 | } |
2b9d42f0 | 3899 | qsort(cp, i, 2*sizeof(UV), uvcompare); |
a0ed51b3 | 3900 | for (j = 0; j < i; j++) { |
2b9d42f0 | 3901 | UV val = cp[2*j]; |
a0ed51b3 LW |
3902 | diff = val - nextmin; |
3903 | if (diff > 0) { | |
9041c2e3 | 3904 | t = uvuni_to_utf8(tmpbuf,nextmin); |
dfe13c55 | 3905 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 | 3906 | if (diff > 1) { |
2b9d42f0 | 3907 | U8 range_mark = UTF_TO_NATIVE(0xff); |
9041c2e3 | 3908 | t = uvuni_to_utf8(tmpbuf, val - 1); |
2b9d42f0 | 3909 | sv_catpvn(transv, (char *)&range_mark, 1); |
dfe13c55 | 3910 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 LW |
3911 | } |
3912 | } | |
2b9d42f0 | 3913 | val = cp[2*j+1]; |
a0ed51b3 LW |
3914 | if (val >= nextmin) |
3915 | nextmin = val + 1; | |
3916 | } | |
9041c2e3 | 3917 | t = uvuni_to_utf8(tmpbuf,nextmin); |
dfe13c55 | 3918 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
2b9d42f0 NIS |
3919 | { |
3920 | U8 range_mark = UTF_TO_NATIVE(0xff); | |
3921 | sv_catpvn(transv, (char *)&range_mark, 1); | |
3922 | } | |
6247ead0 | 3923 | t = uvuni_to_utf8(tmpbuf, 0x7fffffff); |
dfe13c55 | 3924 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
93524f2b | 3925 | t = (const U8*)SvPVX_const(transv); |
a0ed51b3 LW |
3926 | tlen = SvCUR(transv); |
3927 | tend = t + tlen; | |
455d824a | 3928 | Safefree(cp); |
a0ed51b3 LW |
3929 | } |
3930 | else if (!rlen && !del) { | |
3931 | r = t; rlen = tlen; rend = tend; | |
4757a243 LW |
3932 | } |
3933 | if (!squash) { | |
05d340b8 | 3934 | if ((!rlen && !del) || t == r || |
12ae5dfc | 3935 | (tlen == rlen && memEQ((char *)t, (char *)r, tlen))) |
01ec43d0 | 3936 | { |
4757a243 | 3937 | o->op_private |= OPpTRANS_IDENTICAL; |
01ec43d0 | 3938 | } |
a0ed51b3 LW |
3939 | } |
3940 | ||
3941 | while (t < tend || tfirst <= tlast) { | |
3942 | /* see if we need more "t" chars */ | |
3943 | if (tfirst > tlast) { | |
9f7f3913 | 3944 | tfirst = (I32)utf8n_to_uvuni(t, tend - t, &ulen, flags); |
a0ed51b3 | 3945 | t += ulen; |
2b9d42f0 | 3946 | if (t < tend && NATIVE_TO_UTF(*t) == 0xff) { /* illegal utf8 val indicates range */ |
ba210ebe | 3947 | t++; |
9f7f3913 | 3948 | tlast = (I32)utf8n_to_uvuni(t, tend - t, &ulen, flags); |
a0ed51b3 LW |
3949 | t += ulen; |
3950 | } | |
3951 | else | |
3952 | tlast = tfirst; | |
3953 | } | |
3954 | ||
3955 | /* now see if we need more "r" chars */ | |
3956 | if (rfirst > rlast) { | |
3957 | if (r < rend) { | |
9f7f3913 | 3958 | rfirst = (I32)utf8n_to_uvuni(r, rend - r, &ulen, flags); |
a0ed51b3 | 3959 | r += ulen; |
2b9d42f0 | 3960 | if (r < rend && NATIVE_TO_UTF(*r) == 0xff) { /* illegal utf8 val indicates range */ |
ba210ebe | 3961 | r++; |
9f7f3913 | 3962 | rlast = (I32)utf8n_to_uvuni(r, rend - r, &ulen, flags); |
a0ed51b3 LW |
3963 | r += ulen; |
3964 | } | |
3965 | else | |
3966 | rlast = rfirst; | |
3967 | } | |
3968 | else { | |
3969 | if (!havefinal++) | |
3970 | final = rlast; | |
3971 | rfirst = rlast = 0xffffffff; | |
3972 | } | |
3973 | } | |
3974 | ||
3975 | /* now see which range will peter our first, if either. */ | |
3976 | tdiff = tlast - tfirst; | |
3977 | rdiff = rlast - rfirst; | |
3978 | ||
3979 | if (tdiff <= rdiff) | |
3980 | diff = tdiff; | |
3981 | else | |
3982 | diff = rdiff; | |
3983 | ||
3984 | if (rfirst == 0xffffffff) { | |
3985 | diff = tdiff; /* oops, pretend rdiff is infinite */ | |
3986 | if (diff > 0) | |
894356b3 GS |
3987 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t%04lx\tXXXX\n", |
3988 | (long)tfirst, (long)tlast); | |
a0ed51b3 | 3989 | else |
894356b3 | 3990 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t\tXXXX\n", (long)tfirst); |
a0ed51b3 LW |
3991 | } |
3992 | else { | |
3993 | if (diff > 0) | |
894356b3 GS |
3994 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t%04lx\t%04lx\n", |
3995 | (long)tfirst, (long)(tfirst + diff), | |
3996 | (long)rfirst); | |
a0ed51b3 | 3997 | else |
894356b3 GS |
3998 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t\t%04lx\n", |
3999 | (long)tfirst, (long)rfirst); | |
a0ed51b3 LW |
4000 | |
4001 | if (rfirst + diff > max) | |
4002 | max = rfirst + diff; | |
9b877dbb | 4003 | if (!grows) |
45005bfb JH |
4004 | grows = (tfirst < rfirst && |
4005 | UNISKIP(tfirst) < UNISKIP(rfirst + diff)); | |
4006 | rfirst += diff + 1; | |
a0ed51b3 LW |
4007 | } |
4008 | tfirst += diff + 1; | |
4009 | } | |
4010 | ||
4011 | none = ++max; | |
4012 | if (del) | |
4013 | del = ++max; | |
4014 | ||
4015 | if (max > 0xffff) | |
4016 | bits = 32; | |
4017 | else if (max > 0xff) | |
4018 | bits = 16; | |
4019 | else | |
4020 | bits = 8; | |
4021 | ||
ad64d0ec | 4022 | swash = MUTABLE_SV(swash_init("utf8", "", listsv, bits, none)); |
043e41b8 DM |
4023 | #ifdef USE_ITHREADS |
4024 | cPADOPo->op_padix = pad_alloc(OP_TRANS, SVs_PADTMP); | |
4025 | SvREFCNT_dec(PAD_SVl(cPADOPo->op_padix)); | |
4026 | PAD_SETSV(cPADOPo->op_padix, swash); | |
4027 | SvPADTMP_on(swash); | |
a5446a64 | 4028 | SvREADONLY_on(swash); |
043e41b8 DM |
4029 | #else |
4030 | cSVOPo->op_sv = swash; | |
4031 | #endif | |
a0ed51b3 | 4032 | SvREFCNT_dec(listsv); |
b37c2d43 | 4033 | SvREFCNT_dec(transv); |
a0ed51b3 | 4034 | |
45005bfb | 4035 | if (!del && havefinal && rlen) |
85fbaab2 | 4036 | (void)hv_store(MUTABLE_HV(SvRV(swash)), "FINAL", 5, |
b448e4fe | 4037 | newSVuv((UV)final), 0); |
a0ed51b3 | 4038 | |
9b877dbb | 4039 | if (grows) |
a0ed51b3 LW |
4040 | o->op_private |= OPpTRANS_GROWS; |
4041 | ||
b37c2d43 AL |
4042 | Safefree(tsave); |
4043 | Safefree(rsave); | |
9b877dbb | 4044 | |
eb8433b7 NC |
4045 | #ifdef PERL_MAD |
4046 | op_getmad(expr,o,'e'); | |
4047 | op_getmad(repl,o,'r'); | |
4048 | #else | |
a0ed51b3 LW |
4049 | op_free(expr); |
4050 | op_free(repl); | |
eb8433b7 | 4051 | #endif |
a0ed51b3 LW |
4052 | return o; |
4053 | } | |
4054 | ||
9100eeb1 Z |
4055 | tbl = (short*)PerlMemShared_calloc( |
4056 | (o->op_private & OPpTRANS_COMPLEMENT) && | |
4057 | !(o->op_private & OPpTRANS_DELETE) ? 258 : 256, | |
4058 | sizeof(short)); | |
4059 | cPVOPo->op_pv = (char*)tbl; | |
79072805 | 4060 | if (complement) { |
eb160463 | 4061 | for (i = 0; i < (I32)tlen; i++) |
ec49126f | 4062 | tbl[t[i]] = -1; |
79072805 LW |
4063 | for (i = 0, j = 0; i < 256; i++) { |
4064 | if (!tbl[i]) { | |
eb160463 | 4065 | if (j >= (I32)rlen) { |
a0ed51b3 | 4066 | if (del) |
79072805 LW |
4067 | tbl[i] = -2; |
4068 | else if (rlen) | |
ec49126f | 4069 | tbl[i] = r[j-1]; |
79072805 | 4070 | else |
eb160463 | 4071 | tbl[i] = (short)i; |
79072805 | 4072 | } |
9b877dbb IH |
4073 | else { |
4074 | if (i < 128 && r[j] >= 128) | |
4075 | grows = 1; | |
ec49126f | 4076 | tbl[i] = r[j++]; |
9b877dbb | 4077 | } |
79072805 LW |
4078 | } |
4079 | } | |
05d340b8 JH |
4080 | if (!del) { |
4081 | if (!rlen) { | |
4082 | j = rlen; | |
4083 | if (!squash) | |
4084 | o->op_private |= OPpTRANS_IDENTICAL; | |
4085 | } | |
eb160463 | 4086 | else if (j >= (I32)rlen) |
05d340b8 | 4087 | j = rlen - 1; |
10db182f | 4088 | else { |
aa1f7c5b JH |
4089 | tbl = |
4090 | (short *) | |
4091 | PerlMemShared_realloc(tbl, | |
4092 | (0x101+rlen-j) * sizeof(short)); | |
10db182f YO |
4093 | cPVOPo->op_pv = (char*)tbl; |
4094 | } | |
585ec06d | 4095 | tbl[0x100] = (short)(rlen - j); |
eb160463 | 4096 | for (i=0; i < (I32)rlen - j; i++) |
8973db79 JH |
4097 | tbl[0x101+i] = r[j+i]; |
4098 | } | |
79072805 LW |
4099 | } |
4100 | else { | |
a0ed51b3 | 4101 | if (!rlen && !del) { |
79072805 | 4102 | r = t; rlen = tlen; |
5d06d08e | 4103 | if (!squash) |
4757a243 | 4104 | o->op_private |= OPpTRANS_IDENTICAL; |
79072805 | 4105 | } |
94bfe852 RGS |
4106 | else if (!squash && rlen == tlen && memEQ((char*)t, (char*)r, tlen)) { |
4107 | o->op_private |= OPpTRANS_IDENTICAL; | |
4108 | } | |
79072805 LW |
4109 | for (i = 0; i < 256; i++) |
4110 | tbl[i] = -1; | |
eb160463 GS |
4111 | for (i = 0, j = 0; i < (I32)tlen; i++,j++) { |
4112 | if (j >= (I32)rlen) { | |
a0ed51b3 | 4113 | if (del) { |
ec49126f | 4114 | if (tbl[t[i]] == -1) |
4115 | tbl[t[i]] = -2; | |
79072805 LW |
4116 | continue; |
4117 | } | |
4118 | --j; | |
4119 | } | |
9b877dbb IH |
4120 | if (tbl[t[i]] == -1) { |
4121 | if (t[i] < 128 && r[j] >= 128) | |
4122 | grows = 1; | |
ec49126f | 4123 | tbl[t[i]] = r[j]; |
9b877dbb | 4124 | } |
79072805 LW |
4125 | } |
4126 | } | |
b08e453b | 4127 | |
a2a5de95 NC |
4128 | if(del && rlen == tlen) { |
4129 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), "Useless use of /d modifier in transliteration operator"); | |
4130 | } else if(rlen > tlen) { | |
4131 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), "Replacement list is longer than search list"); | |
b08e453b RB |
4132 | } |
4133 | ||
9b877dbb IH |
4134 | if (grows) |
4135 | o->op_private |= OPpTRANS_GROWS; | |
eb8433b7 NC |
4136 | #ifdef PERL_MAD |
4137 | op_getmad(expr,o,'e'); | |
4138 | op_getmad(repl,o,'r'); | |
4139 | #else | |
79072805 LW |
4140 | op_free(expr); |
4141 | op_free(repl); | |
eb8433b7 | 4142 | #endif |
79072805 | 4143 | |
11343788 | 4144 | return o; |
79072805 LW |
4145 | } |
4146 | ||
d67eb5f4 Z |
4147 | /* |
4148 | =for apidoc Am|OP *|newPMOP|I32 type|I32 flags | |
4149 | ||
4150 | Constructs, checks, and returns an op of any pattern matching type. | |
4151 | I<type> is the opcode. I<flags> gives the eight bits of C<op_flags> | |
4152 | and, shifted up eight bits, the eight bits of C<op_private>. | |
4153 | ||
4154 | =cut | |
4155 | */ | |
4156 | ||
79072805 | 4157 | OP * |
864dbfa3 | 4158 | Perl_newPMOP(pTHX_ I32 type, I32 flags) |
79072805 | 4159 | { |
27da23d5 | 4160 | dVAR; |
79072805 LW |
4161 | PMOP *pmop; |
4162 | ||
e69777c1 GG |
4163 | assert((PL_opargs[type] & OA_CLASS_MASK) == OA_PMOP); |
4164 | ||
b7dc083c | 4165 | NewOp(1101, pmop, 1, PMOP); |
eb160463 | 4166 | pmop->op_type = (OPCODE)type; |
22c35a8c | 4167 | pmop->op_ppaddr = PL_ppaddr[type]; |
eb160463 GS |
4168 | pmop->op_flags = (U8)flags; |
4169 | pmop->op_private = (U8)(0 | (flags >> 8)); | |
79072805 | 4170 | |
3280af22 | 4171 | if (PL_hints & HINT_RE_TAINT) |
c737faaf | 4172 | pmop->op_pmflags |= PMf_RETAINT; |
82ad65bb | 4173 | if (IN_LOCALE_COMPILETIME) { |
a62b1201 | 4174 | set_regex_charset(&(pmop->op_pmflags), REGEX_LOCALE_CHARSET); |
9de15fec | 4175 | } |
66cbab2c KW |
4176 | else if ((! (PL_hints & HINT_BYTES)) |
4177 | /* Both UNI_8_BIT and locale :not_characters imply Unicode */ | |
4178 | && (PL_hints & (HINT_UNI_8_BIT|HINT_LOCALE_NOT_CHARS))) | |
4179 | { | |
a62b1201 | 4180 | set_regex_charset(&(pmop->op_pmflags), REGEX_UNICODE_CHARSET); |
9de15fec | 4181 | } |
1e215989 | 4182 | if (PL_hints & HINT_RE_FLAGS) { |
20439bc7 Z |
4183 | SV *reflags = Perl_refcounted_he_fetch_pvn(aTHX_ |
4184 | PL_compiling.cop_hints_hash, STR_WITH_LEN("reflags"), 0, 0 | |
1e215989 FC |
4185 | ); |
4186 | if (reflags && SvOK(reflags)) pmop->op_pmflags |= SvIV(reflags); | |
20439bc7 | 4187 | reflags = Perl_refcounted_he_fetch_pvn(aTHX_ |
6320bfaf | 4188 | PL_compiling.cop_hints_hash, STR_WITH_LEN("reflags_charset"), 0, 0 |
1e215989 FC |
4189 | ); |
4190 | if (reflags && SvOK(reflags)) { | |
dabded94 | 4191 | set_regex_charset(&(pmop->op_pmflags), (regex_charset)SvIV(reflags)); |
1e215989 FC |
4192 | } |
4193 | } | |
c737faaf | 4194 | |
36477c24 | 4195 | |
debc9467 | 4196 | #ifdef USE_ITHREADS |
402d2eb1 NC |
4197 | assert(SvPOK(PL_regex_pad[0])); |
4198 | if (SvCUR(PL_regex_pad[0])) { | |
4199 | /* Pop off the "packed" IV from the end. */ | |
4200 | SV *const repointer_list = PL_regex_pad[0]; | |
4201 | const char *p = SvEND(repointer_list) - sizeof(IV); | |
4202 | const IV offset = *((IV*)p); | |
4203 | ||
4204 | assert(SvCUR(repointer_list) % sizeof(IV) == 0); | |
4205 | ||
4206 | SvEND_set(repointer_list, p); | |
4207 | ||
110f3028 | 4208 | pmop->op_pmoffset = offset; |
14a49a24 NC |
4209 | /* This slot should be free, so assert this: */ |
4210 | assert(PL_regex_pad[offset] == &PL_sv_undef); | |
551405c4 | 4211 | } else { |
14a49a24 | 4212 | SV * const repointer = &PL_sv_undef; |
9a8b6709 | 4213 | av_push(PL_regex_padav, repointer); |
551405c4 AL |
4214 | pmop->op_pmoffset = av_len(PL_regex_padav); |
4215 | PL_regex_pad = AvARRAY(PL_regex_padav); | |
13137afc | 4216 | } |
debc9467 | 4217 | #endif |
1eb1540c | 4218 | |
463d09e6 | 4219 | return CHECKOP(type, pmop); |
79072805 LW |
4220 | } |
4221 | ||
131b3ad0 DM |
4222 | /* Given some sort of match op o, and an expression expr containing a |
4223 | * pattern, either compile expr into a regex and attach it to o (if it's | |
4224 | * constant), or convert expr into a runtime regcomp op sequence (if it's | |
4225 | * not) | |
4226 | * | |
4227 | * isreg indicates that the pattern is part of a regex construct, eg | |
4228 | * $x =~ /pattern/ or split /pattern/, as opposed to $x =~ $pattern or | |
4229 | * split "pattern", which aren't. In the former case, expr will be a list | |
4230 | * if the pattern contains more than one term (eg /a$b/) or if it contains | |
4231 | * a replacement, ie s/// or tr///. | |
4232 | */ | |
4233 | ||
79072805 | 4234 | OP * |
131b3ad0 | 4235 | Perl_pmruntime(pTHX_ OP *o, OP *expr, bool isreg) |
79072805 | 4236 | { |
27da23d5 | 4237 | dVAR; |
79072805 LW |
4238 | PMOP *pm; |
4239 | LOGOP *rcop; | |
ce862d02 | 4240 | I32 repl_has_vars = 0; |
5f66b61c | 4241 | OP* repl = NULL; |
131b3ad0 DM |
4242 | bool reglist; |
4243 | ||
7918f24d NC |
4244 | PERL_ARGS_ASSERT_PMRUNTIME; |
4245 | ||
bb16bae8 FC |
4246 | if ( |
4247 | o->op_type == OP_SUBST | |
4248 | || o->op_type == OP_TRANS || o->op_type == OP_TRANSR | |
4249 | ) { | |
131b3ad0 DM |
4250 | /* last element in list is the replacement; pop it */ |
4251 | OP* kid; | |
4252 | repl = cLISTOPx(expr)->op_last; | |
4253 | kid = cLISTOPx(expr)->op_first; | |
4254 | while (kid->op_sibling != repl) | |
4255 | kid = kid->op_sibling; | |
5f66b61c | 4256 | kid->op_sibling = NULL; |
131b3ad0 DM |
4257 | cLISTOPx(expr)->op_last = kid; |
4258 | } | |
79072805 | 4259 | |
131b3ad0 DM |
4260 | if (isreg && expr->op_type == OP_LIST && |
4261 | cLISTOPx(expr)->op_first->op_sibling == cLISTOPx(expr)->op_last) | |
4262 | { | |
4263 | /* convert single element list to element */ | |
0bd48802 | 4264 | OP* const oe = expr; |
131b3ad0 | 4265 | expr = cLISTOPx(oe)->op_first->op_sibling; |
5f66b61c AL |
4266 | cLISTOPx(oe)->op_first->op_sibling = NULL; |
4267 | cLISTOPx(oe)->op_last = NULL; | |
131b3ad0 DM |
4268 | op_free(oe); |
4269 | } | |
4270 | ||
bb16bae8 | 4271 | if (o->op_type == OP_TRANS || o->op_type == OP_TRANSR) { |
11343788 | 4272 | return pmtrans(o, expr, repl); |
131b3ad0 DM |
4273 | } |
4274 | ||
4275 | reglist = isreg && expr->op_type == OP_LIST; | |
4276 | if (reglist) | |
4277 | op_null(expr); | |
79072805 | 4278 | |
3280af22 | 4279 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 4280 | pm = (PMOP*)o; |
79072805 LW |
4281 | |
4282 | if (expr->op_type == OP_CONST) { | |
b9ad30b4 | 4283 | SV *pat = ((SVOP*)expr)->op_sv; |
73134a2e | 4284 | U32 pm_flags = pm->op_pmflags & RXf_PMf_COMPILETIME; |
5c144d81 | 4285 | |
0ac6acae AB |
4286 | if (o->op_flags & OPf_SPECIAL) |
4287 | pm_flags |= RXf_SPLIT; | |
5c144d81 | 4288 | |
b9ad30b4 NC |
4289 | if (DO_UTF8(pat)) { |
4290 | assert (SvUTF8(pat)); | |
4291 | } else if (SvUTF8(pat)) { | |
4292 | /* Not doing UTF-8, despite what the SV says. Is this only if we're | |
4293 | trapped in use 'bytes'? */ | |
4294 | /* Make a copy of the octet sequence, but without the flag on, as | |
4295 | the compiler now honours the SvUTF8 flag on pat. */ | |
4296 | STRLEN len; | |
4297 | const char *const p = SvPV(pat, len); | |
4298 | pat = newSVpvn_flags(p, len, SVs_TEMP); | |
4299 | } | |
0ac6acae | 4300 | |
3ab4a224 | 4301 | PM_SETRE(pm, CALLREGCOMP(pat, pm_flags)); |
c737faaf | 4302 | |
eb8433b7 NC |
4303 | #ifdef PERL_MAD |
4304 | op_getmad(expr,(OP*)pm,'e'); | |
4305 | #else | |
79072805 | 4306 | op_free(expr); |
eb8433b7 | 4307 | #endif |
79072805 LW |
4308 | } |
4309 | else { | |
3280af22 | 4310 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) |
1c846c1f | 4311 | expr = newUNOP((!(PL_hints & HINT_RE_EVAL) |
2cd61cdb IZ |
4312 | ? OP_REGCRESET |
4313 | : OP_REGCMAYBE),0,expr); | |
463ee0b2 | 4314 | |
b7dc083c | 4315 | NewOp(1101, rcop, 1, LOGOP); |
79072805 | 4316 | rcop->op_type = OP_REGCOMP; |
22c35a8c | 4317 | rcop->op_ppaddr = PL_ppaddr[OP_REGCOMP]; |
79072805 | 4318 | rcop->op_first = scalar(expr); |
131b3ad0 DM |
4319 | rcop->op_flags |= OPf_KIDS |
4320 | | ((PL_hints & HINT_RE_EVAL) ? OPf_SPECIAL : 0) | |
4321 | | (reglist ? OPf_STACKED : 0); | |
79072805 | 4322 | rcop->op_private = 1; |
11343788 | 4323 | rcop->op_other = o; |
131b3ad0 DM |
4324 | if (reglist) |
4325 | rcop->op_targ = pad_alloc(rcop->op_type, SVs_PADTMP); | |
4326 | ||
b5c19bd7 | 4327 | /* /$x/ may cause an eval, since $x might be qr/(?{..})/ */ |
ec192197 | 4328 | if (PL_hints & HINT_RE_EVAL) PL_cv_has_eval = 1; |
79072805 LW |
4329 | |
4330 | /* establish postfix order */ | |
3280af22 | 4331 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) { |
463ee0b2 LW |
4332 | LINKLIST(expr); |
4333 | rcop->op_next = expr; | |
4334 | ((UNOP*)expr)->op_first->op_next = (OP*)rcop; | |
4335 | } | |
4336 | else { | |
4337 | rcop->op_next = LINKLIST(expr); | |
4338 | expr->op_next = (OP*)rcop; | |
4339 | } | |
79072805 | 4340 | |
2fcb4757 | 4341 | op_prepend_elem(o->op_type, scalar((OP*)rcop), o); |
79072805 LW |
4342 | } |
4343 | ||
4344 | if (repl) { | |
748a9306 | 4345 | OP *curop; |
0244c3a4 | 4346 | if (pm->op_pmflags & PMf_EVAL) { |
6136c704 | 4347 | curop = NULL; |
670a9cb2 DM |
4348 | if (CopLINE(PL_curcop) < (line_t)PL_parser->multi_end) |
4349 | CopLINE_set(PL_curcop, (line_t)PL_parser->multi_end); | |
0244c3a4 | 4350 | } |
748a9306 LW |
4351 | else if (repl->op_type == OP_CONST) |
4352 | curop = repl; | |
79072805 | 4353 | else { |
c445ea15 | 4354 | OP *lastop = NULL; |
79072805 | 4355 | for (curop = LINKLIST(repl); curop!=repl; curop = LINKLIST(curop)) { |
e80b829c | 4356 | if (curop->op_type == OP_SCOPE |
10250113 | 4357 | || curop->op_type == OP_LEAVE |
e80b829c | 4358 | || (PL_opargs[curop->op_type] & OA_DANGEROUS)) { |
79072805 | 4359 | if (curop->op_type == OP_GV) { |
6136c704 | 4360 | GV * const gv = cGVOPx_gv(curop); |
ce862d02 | 4361 | repl_has_vars = 1; |
f702bf4a | 4362 | if (strchr("&`'123456789+-\016\022", *GvENAME(gv))) |
79072805 LW |
4363 | break; |
4364 | } | |
4365 | else if (curop->op_type == OP_RV2CV) | |
4366 | break; | |
4367 | else if (curop->op_type == OP_RV2SV || | |
4368 | curop->op_type == OP_RV2AV || | |
4369 | curop->op_type == OP_RV2HV || | |
4370 | curop->op_type == OP_RV2GV) { | |
4371 | if (lastop && lastop->op_type != OP_GV) /*funny deref?*/ | |
4372 | break; | |
4373 | } | |
748a9306 LW |
4374 | else if (curop->op_type == OP_PADSV || |
4375 | curop->op_type == OP_PADAV || | |
4376 | curop->op_type == OP_PADHV || | |
e80b829c RGS |
4377 | curop->op_type == OP_PADANY) |
4378 | { | |
ce862d02 | 4379 | repl_has_vars = 1; |
748a9306 | 4380 | } |
1167e5da | 4381 | else if (curop->op_type == OP_PUSHRE) |
6f207bd3 | 4382 | NOOP; /* Okay here, dangerous in newASSIGNOP */ |
79072805 LW |
4383 | else |
4384 | break; | |
4385 | } | |
4386 | lastop = curop; | |
4387 | } | |
748a9306 | 4388 | } |
ce862d02 | 4389 | if (curop == repl |
e80b829c RGS |
4390 | && !(repl_has_vars |
4391 | && (!PM_GETRE(pm) | |
07bc277f | 4392 | || RX_EXTFLAGS(PM_GETRE(pm)) & RXf_EVAL_SEEN))) |
3be69782 | 4393 | { |
748a9306 | 4394 | pm->op_pmflags |= PMf_CONST; /* const for long enough */ |
2fcb4757 | 4395 | op_prepend_elem(o->op_type, scalar(repl), o); |
748a9306 LW |
4396 | } |
4397 | else { | |
aaa362c4 | 4398 | if (curop == repl && !PM_GETRE(pm)) { /* Has variables. */ |
ce862d02 | 4399 | pm->op_pmflags |= PMf_MAYBE_CONST; |
ce862d02 | 4400 | } |
b7dc083c | 4401 | NewOp(1101, rcop, 1, LOGOP); |
748a9306 | 4402 | rcop->op_type = OP_SUBSTCONT; |
22c35a8c | 4403 | rcop->op_ppaddr = PL_ppaddr[OP_SUBSTCONT]; |
748a9306 LW |
4404 | rcop->op_first = scalar(repl); |
4405 | rcop->op_flags |= OPf_KIDS; | |
4406 | rcop->op_private = 1; | |
11343788 | 4407 | rcop->op_other = o; |
748a9306 LW |
4408 | |
4409 | /* establish postfix order */ | |
4410 | rcop->op_next = LINKLIST(repl); | |
4411 | repl->op_next = (OP*)rcop; | |
4412 | ||
20e98b0f | 4413 | pm->op_pmreplrootu.op_pmreplroot = scalar((OP*)rcop); |
29f2e912 NC |
4414 | assert(!(pm->op_pmflags & PMf_ONCE)); |
4415 | pm->op_pmstashstartu.op_pmreplstart = LINKLIST(rcop); | |
748a9306 | 4416 | rcop->op_next = 0; |
79072805 LW |
4417 | } |
4418 | } | |
4419 | ||
4420 | return (OP*)pm; | |
4421 | } | |
4422 | ||
d67eb5f4 Z |
4423 | /* |
4424 | =for apidoc Am|OP *|newSVOP|I32 type|I32 flags|SV *sv | |
4425 | ||
4426 | Constructs, checks, and returns an op of any type that involves an | |
4427 | embedded SV. I<type> is the opcode. I<flags> gives the eight bits | |
4428 | of C<op_flags>. I<sv> gives the SV to embed in the op; this function | |
4429 | takes ownership of one reference to it. | |
4430 | ||
4431 | =cut | |
4432 | */ | |
4433 | ||
79072805 | 4434 | OP * |
864dbfa3 | 4435 | Perl_newSVOP(pTHX_ I32 type, I32 flags, SV *sv) |
79072805 | 4436 | { |
27da23d5 | 4437 | dVAR; |
79072805 | 4438 | SVOP *svop; |
7918f24d NC |
4439 | |
4440 | PERL_ARGS_ASSERT_NEWSVOP; | |
4441 | ||
e69777c1 GG |
4442 | assert((PL_opargs[type] & OA_CLASS_MASK) == OA_SVOP |
4443 | || (PL_opargs[type] & OA_CLASS_MASK) == OA_PVOP_OR_SVOP | |
4444 | || (PL_opargs[type] & OA_CLASS_MASK) == OA_FILESTATOP); | |
4445 | ||
b7dc083c | 4446 | NewOp(1101, svop, 1, SVOP); |
eb160463 | 4447 | svop->op_type = (OPCODE)type; |
22c35a8c | 4448 | svop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
4449 | svop->op_sv = sv; |
4450 | svop->op_next = (OP*)svop; | |
eb160463 | 4451 | svop->op_flags = (U8)flags; |
22c35a8c | 4452 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 4453 | scalar((OP*)svop); |
22c35a8c | 4454 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 4455 | svop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 4456 | return CHECKOP(type, svop); |
79072805 LW |
4457 | } |
4458 | ||
392d04bb | 4459 | #ifdef USE_ITHREADS |
d67eb5f4 Z |
4460 | |
4461 | /* | |
4462 | =for apidoc Am|OP *|newPADOP|I32 type|I32 flags|SV *sv | |
4463 | ||
4464 | Constructs, checks, and returns an op of any type that involves a | |
4465 | reference to a pad element. I<type> is the opcode. I<flags> gives the | |
4466 | eight bits of C<op_flags>. A pad slot is automatically allocated, and | |
4467 | is populated with I<sv>; this function takes ownership of one reference | |
4468 | to it. | |
4469 | ||
4470 | This function only exists if Perl has been compiled to use ithreads. | |
4471 | ||
4472 | =cut | |
4473 | */ | |
4474 | ||
79072805 | 4475 | OP * |
350de78d GS |
4476 | Perl_newPADOP(pTHX_ I32 type, I32 flags, SV *sv) |
4477 | { | |
27da23d5 | 4478 | dVAR; |
350de78d | 4479 | PADOP *padop; |
7918f24d NC |
4480 | |
4481 | PERL_ARGS_ASSERT_NEWPADOP; | |
4482 | ||
e69777c1 GG |
4483 | assert((PL_opargs[type] & OA_CLASS_MASK) == OA_SVOP |
4484 | || (PL_opargs[type] & OA_CLASS_MASK) == OA_PVOP_OR_SVOP | |
4485 | || (PL_opargs[type] & OA_CLASS_MASK) == OA_FILESTATOP); | |
4486 | ||
350de78d | 4487 | NewOp(1101, padop, 1, PADOP); |
eb160463 | 4488 | padop->op_type = (OPCODE)type; |
350de78d GS |
4489 | padop->op_ppaddr = PL_ppaddr[type]; |
4490 | padop->op_padix = pad_alloc(type, SVs_PADTMP); | |
dd2155a4 DM |
4491 | SvREFCNT_dec(PAD_SVl(padop->op_padix)); |
4492 | PAD_SETSV(padop->op_padix, sv); | |
58182927 NC |
4493 | assert(sv); |
4494 | SvPADTMP_on(sv); | |
350de78d | 4495 | padop->op_next = (OP*)padop; |
eb160463 | 4496 | padop->op_flags = (U8)flags; |
350de78d GS |
4497 | if (PL_opargs[type] & OA_RETSCALAR) |
4498 | scalar((OP*)padop); | |
4499 | if (PL_opargs[type] & OA_TARGET) | |
4500 | padop->op_targ = pad_alloc(type, SVs_PADTMP); | |
4501 | return CHECKOP(type, padop); | |
4502 | } | |
d67eb5f4 Z |
4503 | |
4504 | #endif /* !USE_ITHREADS */ | |
4505 | ||
4506 | /* | |
4507 | =for apidoc Am|OP *|newGVOP|I32 type|I32 flags|GV *gv | |
4508 | ||
4509 | Constructs, checks, and returns an op of any type that involves an | |
4510 | embedded reference to a GV. I<type> is the opcode. I<flags> gives the | |
4511 | eight bits of C<op_flags>. I<gv> identifies the GV that the op should | |
4512 | reference; calling this function does not transfer ownership of any | |
4513 | reference to it. | |
4514 | ||
4515 | =cut | |
4516 | */ | |
350de78d GS |
4517 | |
4518 | OP * | |
864dbfa3 | 4519 | Perl_newGVOP(pTHX_ I32 type, I32 flags, GV *gv) |
79072805 | 4520 | { |
27da23d5 | 4521 | dVAR; |
7918f24d NC |
4522 | |
4523 | PERL_ARGS_ASSERT_NEWGVOP; | |
4524 | ||
350de78d | 4525 | #ifdef USE_ITHREADS |
58182927 | 4526 | GvIN_PAD_on(gv); |
ff8997d7 | 4527 | return newPADOP(type, flags, SvREFCNT_inc_simple_NN(gv)); |
350de78d | 4528 | #else |
ff8997d7 | 4529 | return newSVOP(type, flags, SvREFCNT_inc_simple_NN(gv)); |
350de78d | 4530 | #endif |
79072805 LW |
4531 | } |
4532 | ||
d67eb5f4 Z |
4533 | /* |
4534 | =for apidoc Am|OP *|newPVOP|I32 type|I32 flags|char *pv | |
4535 | ||
4536 | Constructs, checks, and returns an op of any type that involves an | |
4537 | embedded C-level pointer (PV). I<type> is the opcode. I<flags> gives | |
4538 | the eight bits of C<op_flags>. I<pv> supplies the C-level pointer, which | |
4539 | must have been allocated using L</PerlMemShared_malloc>; the memory will | |
4540 | be freed when the op is destroyed. | |
4541 | ||
4542 | =cut | |
4543 | */ | |
4544 | ||
79072805 | 4545 | OP * |
864dbfa3 | 4546 | Perl_newPVOP(pTHX_ I32 type, I32 flags, char *pv) |
79072805 | 4547 | { |
27da23d5 | 4548 | dVAR; |
5db1eb8d | 4549 | const bool utf8 = cBOOL(flags & SVf_UTF8); |
79072805 | 4550 | PVOP *pvop; |
e69777c1 | 4551 | |
5db1eb8d BF |
4552 | flags &= ~SVf_UTF8; |
4553 | ||
e69777c1 | 4554 | assert((PL_opargs[type] & OA_CLASS_MASK) == OA_PVOP_OR_SVOP |
1a35f9ff | 4555 | || type == OP_RUNCV |
e69777c1 GG |
4556 | || (PL_opargs[type] & OA_CLASS_MASK) == OA_LOOPEXOP); |
4557 | ||
b7dc083c | 4558 | NewOp(1101, pvop, 1, PVOP); |
eb160463 | 4559 | pvop->op_type = (OPCODE)type; |
22c35a8c | 4560 | pvop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
4561 | pvop->op_pv = pv; |
4562 | pvop->op_next = (OP*)pvop; | |
eb160463 | 4563 | pvop->op_flags = (U8)flags; |
5db1eb8d | 4564 | pvop->op_private = utf8 ? OPpPV_IS_UTF8 : 0; |
22c35a8c | 4565 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 4566 | scalar((OP*)pvop); |
22c35a8c | 4567 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 4568 | pvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 4569 | return CHECKOP(type, pvop); |
79072805 LW |
4570 | } |
4571 | ||
eb8433b7 NC |
4572 | #ifdef PERL_MAD |
4573 | OP* | |
4574 | #else | |
79072805 | 4575 | void |
eb8433b7 | 4576 | #endif |
864dbfa3 | 4577 | Perl_package(pTHX_ OP *o) |
79072805 | 4578 | { |
97aff369 | 4579 | dVAR; |
bf070237 | 4580 | SV *const sv = cSVOPo->op_sv; |
eb8433b7 NC |
4581 | #ifdef PERL_MAD |
4582 | OP *pegop; | |
4583 | #endif | |
79072805 | 4584 | |
7918f24d NC |
4585 | PERL_ARGS_ASSERT_PACKAGE; |
4586 | ||
03d9f026 | 4587 | SAVEGENERICSV(PL_curstash); |
3280af22 | 4588 | save_item(PL_curstname); |
de11ba31 | 4589 | |
03d9f026 | 4590 | PL_curstash = (HV *)SvREFCNT_inc(gv_stashsv(sv, GV_ADD)); |
e1a479c5 | 4591 | |
bf070237 | 4592 | sv_setsv(PL_curstname, sv); |
de11ba31 | 4593 | |
7ad382f4 | 4594 | PL_hints |= HINT_BLOCK_SCOPE; |
53a7735b DM |
4595 | PL_parser->copline = NOLINE; |
4596 | PL_parser->expect = XSTATE; | |
eb8433b7 NC |
4597 | |
4598 | #ifndef PERL_MAD | |
4599 | op_free(o); | |
4600 | #else | |
4601 | if (!PL_madskills) { | |
4602 | op_free(o); | |
1d866c12 | 4603 | return NULL; |
eb8433b7 NC |
4604 | } |
4605 | ||
4606 | pegop = newOP(OP_NULL,0); | |
4607 | op_getmad(o,pegop,'P'); | |
4608 | return pegop; | |
4609 | #endif | |
79072805 LW |
4610 | } |
4611 | ||
6fa4d285 DG |
4612 | void |
4613 | Perl_package_version( pTHX_ OP *v ) | |
4614 | { | |
4615 | dVAR; | |
458818ec | 4616 | U32 savehints = PL_hints; |
6fa4d285 | 4617 | PERL_ARGS_ASSERT_PACKAGE_VERSION; |
458818ec | 4618 | PL_hints &= ~HINT_STRICT_VARS; |
e92f586b | 4619 | sv_setsv( GvSV(gv_fetchpvs("VERSION", GV_ADDMULTI, SVt_PV)), cSVOPx(v)->op_sv ); |
458818ec | 4620 | PL_hints = savehints; |
6fa4d285 DG |
4621 | op_free(v); |
4622 | } | |
4623 | ||
eb8433b7 NC |
4624 | #ifdef PERL_MAD |
4625 | OP* | |
4626 | #else | |
85e6fe83 | 4627 | void |
eb8433b7 | 4628 | #endif |
88d95a4d | 4629 | Perl_utilize(pTHX_ int aver, I32 floor, OP *version, OP *idop, OP *arg) |
85e6fe83 | 4630 | { |
97aff369 | 4631 | dVAR; |
a0d0e21e | 4632 | OP *pack; |
a0d0e21e | 4633 | OP *imop; |
b1cb66bf | 4634 | OP *veop; |
eb8433b7 NC |
4635 | #ifdef PERL_MAD |
4636 | OP *pegop = newOP(OP_NULL,0); | |
4637 | #endif | |
88e9444c | 4638 | SV *use_version = NULL; |
85e6fe83 | 4639 | |
7918f24d NC |
4640 | PERL_ARGS_ASSERT_UTILIZE; |
4641 | ||
88d95a4d | 4642 | if (idop->op_type != OP_CONST) |
cea2e8a9 | 4643 | Perl_croak(aTHX_ "Module name must be constant"); |
85e6fe83 | 4644 | |
eb8433b7 NC |
4645 | if (PL_madskills) |
4646 | op_getmad(idop,pegop,'U'); | |
4647 | ||
5f66b61c | 4648 | veop = NULL; |
b1cb66bf | 4649 | |
aec46f14 | 4650 | if (version) { |
551405c4 | 4651 | SV * const vesv = ((SVOP*)version)->op_sv; |
b1cb66bf | 4652 | |
eb8433b7 NC |
4653 | if (PL_madskills) |
4654 | op_getmad(version,pegop,'V'); | |
aec46f14 | 4655 | if (!arg && !SvNIOKp(vesv)) { |
b1cb66bf | 4656 | arg = version; |
4657 | } | |
4658 | else { | |
4659 | OP *pack; | |
0f79a09d | 4660 | SV *meth; |
b1cb66bf | 4661 | |
44dcb63b | 4662 | if (version->op_type != OP_CONST || !SvNIOKp(vesv)) |
fe13d51d | 4663 | Perl_croak(aTHX_ "Version number must be a constant number"); |
b1cb66bf | 4664 | |
88d95a4d JH |
4665 | /* Make copy of idop so we don't free it twice */ |
4666 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)idop)->op_sv)); | |
b1cb66bf | 4667 | |
4668 | /* Fake up a method call to VERSION */ | |
18916d0d | 4669 | meth = newSVpvs_share("VERSION"); |
b1cb66bf | 4670 | veop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, |
2fcb4757 Z |
4671 | op_append_elem(OP_LIST, |
4672 | op_prepend_elem(OP_LIST, pack, list(version)), | |
0f79a09d | 4673 | newSVOP(OP_METHOD_NAMED, 0, meth))); |
b1cb66bf | 4674 | } |
4675 | } | |
aeea060c | 4676 | |
a0d0e21e | 4677 | /* Fake up an import/unimport */ |
eb8433b7 NC |
4678 | if (arg && arg->op_type == OP_STUB) { |
4679 | if (PL_madskills) | |
4680 | op_getmad(arg,pegop,'S'); | |
4633a7c4 | 4681 | imop = arg; /* no import on explicit () */ |
eb8433b7 | 4682 | } |
88d95a4d | 4683 | else if (SvNIOKp(((SVOP*)idop)->op_sv)) { |
5f66b61c | 4684 | imop = NULL; /* use 5.0; */ |
88e9444c NC |
4685 | if (aver) |
4686 | use_version = ((SVOP*)idop)->op_sv; | |
4687 | else | |
468aa647 | 4688 | idop->op_private |= OPpCONST_NOVER; |
b1cb66bf | 4689 | } |
4633a7c4 | 4690 | else { |
0f79a09d GS |
4691 | SV *meth; |
4692 | ||
eb8433b7 NC |
4693 | if (PL_madskills) |
4694 | op_getmad(arg,pegop,'A'); | |
4695 | ||
88d95a4d JH |
4696 | /* Make copy of idop so we don't free it twice */ |
4697 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)idop)->op_sv)); | |
0f79a09d GS |
4698 | |
4699 | /* Fake up a method call to import/unimport */ | |
427d62a4 | 4700 | meth = aver |
18916d0d | 4701 | ? newSVpvs_share("import") : newSVpvs_share("unimport"); |
4633a7c4 | 4702 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, |
2fcb4757 Z |
4703 | op_append_elem(OP_LIST, |
4704 | op_prepend_elem(OP_LIST, pack, list(arg)), | |
0f79a09d | 4705 | newSVOP(OP_METHOD_NAMED, 0, meth))); |
4633a7c4 LW |
4706 | } |
4707 | ||
a0d0e21e | 4708 | /* Fake up the BEGIN {}, which does its thing immediately. */ |
09bef843 | 4709 | newATTRSUB(floor, |
18916d0d | 4710 | newSVOP(OP_CONST, 0, newSVpvs_share("BEGIN")), |
5f66b61c AL |
4711 | NULL, |
4712 | NULL, | |
2fcb4757 Z |
4713 | op_append_elem(OP_LINESEQ, |
4714 | op_append_elem(OP_LINESEQ, | |
bd61b366 SS |
4715 | newSTATEOP(0, NULL, newUNOP(OP_REQUIRE, 0, idop)), |
4716 | newSTATEOP(0, NULL, veop)), | |
4717 | newSTATEOP(0, NULL, imop) )); | |
85e6fe83 | 4718 | |
88e9444c | 4719 | if (use_version) { |
6634bb9d | 4720 | /* Enable the |
88e9444c NC |
4721 | * feature bundle that corresponds to the required version. */ |
4722 | use_version = sv_2mortal(new_version(use_version)); | |
6634bb9d | 4723 | S_enable_feature_bundle(aTHX_ use_version); |
88e9444c | 4724 | |
88e9444c NC |
4725 | /* If a version >= 5.11.0 is requested, strictures are on by default! */ |
4726 | if (vcmp(use_version, | |
4727 | sv_2mortal(upg_version(newSVnv(5.011000), FALSE))) >= 0) { | |
d1718a7c | 4728 | if (!(PL_hints & HINT_EXPLICIT_STRICT_REFS)) |
b50b2058 | 4729 | PL_hints |= HINT_STRICT_REFS; |
d1718a7c | 4730 | if (!(PL_hints & HINT_EXPLICIT_STRICT_SUBS)) |
b50b2058 | 4731 | PL_hints |= HINT_STRICT_SUBS; |
d1718a7c | 4732 | if (!(PL_hints & HINT_EXPLICIT_STRICT_VARS)) |
b50b2058 FC |
4733 | PL_hints |= HINT_STRICT_VARS; |
4734 | } | |
4735 | /* otherwise they are off */ | |
4736 | else { | |
d1718a7c | 4737 | if (!(PL_hints & HINT_EXPLICIT_STRICT_REFS)) |
b50b2058 | 4738 | PL_hints &= ~HINT_STRICT_REFS; |
d1718a7c | 4739 | if (!(PL_hints & HINT_EXPLICIT_STRICT_SUBS)) |
b50b2058 | 4740 | PL_hints &= ~HINT_STRICT_SUBS; |
d1718a7c | 4741 | if (!(PL_hints & HINT_EXPLICIT_STRICT_VARS)) |
b50b2058 | 4742 | PL_hints &= ~HINT_STRICT_VARS; |
88e9444c NC |
4743 | } |
4744 | } | |
4745 | ||
70f5e4ed JH |
4746 | /* The "did you use incorrect case?" warning used to be here. |
4747 | * The problem is that on case-insensitive filesystems one | |
4748 | * might get false positives for "use" (and "require"): | |
4749 | * "use Strict" or "require CARP" will work. This causes | |
4750 | * portability problems for the script: in case-strict | |
4751 | * filesystems the script will stop working. | |
4752 | * | |
4753 | * The "incorrect case" warning checked whether "use Foo" | |
4754 | * imported "Foo" to your namespace, but that is wrong, too: | |
4755 | * there is no requirement nor promise in the language that | |
4756 | * a Foo.pm should or would contain anything in package "Foo". | |
4757 | * | |
4758 | * There is very little Configure-wise that can be done, either: | |
4759 | * the case-sensitivity of the build filesystem of Perl does not | |
4760 | * help in guessing the case-sensitivity of the runtime environment. | |
4761 | */ | |
18fc9488 | 4762 | |
c305c6a0 | 4763 | PL_hints |= HINT_BLOCK_SCOPE; |
53a7735b DM |
4764 | PL_parser->copline = NOLINE; |
4765 | PL_parser->expect = XSTATE; | |
8ec8fbef | 4766 | PL_cop_seqmax++; /* Purely for B::*'s benefit */ |
6012dc80 DM |
4767 | if (PL_cop_seqmax == PERL_PADSEQ_INTRO) /* not a legal value */ |
4768 | PL_cop_seqmax++; | |
eb8433b7 NC |
4769 | |
4770 | #ifdef PERL_MAD | |
4771 | if (!PL_madskills) { | |
4772 | /* FIXME - don't allocate pegop if !PL_madskills */ | |
4773 | op_free(pegop); | |
1d866c12 | 4774 | return NULL; |
eb8433b7 NC |
4775 | } |
4776 | return pegop; | |
4777 | #endif | |
85e6fe83 LW |
4778 | } |
4779 | ||
7d3fb230 | 4780 | /* |
ccfc67b7 JH |
4781 | =head1 Embedding Functions |
4782 | ||
7d3fb230 BS |
4783 | =for apidoc load_module |
4784 | ||
4785 | Loads the module whose name is pointed to by the string part of name. | |
4786 | Note that the actual module name, not its filename, should be given. | |
4787 | Eg, "Foo::Bar" instead of "Foo/Bar.pm". flags can be any of | |
4788 | PERL_LOADMOD_DENY, PERL_LOADMOD_NOIMPORT, or PERL_LOADMOD_IMPORT_OPS | |
d9f23c72 | 4789 | (or 0 for no flags). ver, if specified and not NULL, provides version semantics |
7d3fb230 BS |
4790 | similar to C<use Foo::Bar VERSION>. The optional trailing SV* |
4791 | arguments can be used to specify arguments to the module's import() | |
76f108ac JD |
4792 | method, similar to C<use Foo::Bar VERSION LIST>. They must be |
4793 | terminated with a final NULL pointer. Note that this list can only | |
4794 | be omitted when the PERL_LOADMOD_NOIMPORT flag has been used. | |
4795 | Otherwise at least a single NULL pointer to designate the default | |
4796 | import list is required. | |
7d3fb230 | 4797 | |
d9f23c72 KW |
4798 | The reference count for each specified C<SV*> parameter is decremented. |
4799 | ||
7d3fb230 BS |
4800 | =cut */ |
4801 | ||
e4783991 GS |
4802 | void |
4803 | Perl_load_module(pTHX_ U32 flags, SV *name, SV *ver, ...) | |
4804 | { | |
4805 | va_list args; | |
7918f24d NC |
4806 | |
4807 | PERL_ARGS_ASSERT_LOAD_MODULE; | |
4808 | ||
e4783991 GS |
4809 | va_start(args, ver); |
4810 | vload_module(flags, name, ver, &args); | |
4811 | va_end(args); | |
4812 | } | |
4813 | ||
4814 | #ifdef PERL_IMPLICIT_CONTEXT | |
4815 | void | |
4816 | Perl_load_module_nocontext(U32 flags, SV *name, SV *ver, ...) | |
4817 | { | |
4818 | dTHX; | |
4819 | va_list args; | |
7918f24d | 4820 | PERL_ARGS_ASSERT_LOAD_MODULE_NOCONTEXT; |
e4783991 GS |
4821 | va_start(args, ver); |
4822 | vload_module(flags, name, ver, &args); | |
4823 | va_end(args); | |
4824 | } | |
4825 | #endif | |
4826 | ||
4827 | void | |
4828 | Perl_vload_module(pTHX_ U32 flags, SV *name, SV *ver, va_list *args) | |
4829 | { | |
97aff369 | 4830 | dVAR; |
551405c4 | 4831 | OP *veop, *imop; |
551405c4 | 4832 | OP * const modname = newSVOP(OP_CONST, 0, name); |
7918f24d NC |
4833 | |
4834 | PERL_ARGS_ASSERT_VLOAD_MODULE; | |
4835 | ||
e4783991 GS |
4836 | modname->op_private |= OPpCONST_BARE; |
4837 | if (ver) { | |
4838 | veop = newSVOP(OP_CONST, 0, ver); | |
4839 | } | |
4840 | else | |
5f66b61c | 4841 | veop = NULL; |
e4783991 GS |
4842 | if (flags & PERL_LOADMOD_NOIMPORT) { |
4843 | imop = sawparens(newNULLLIST()); | |
4844 | } | |
4845 | else if (flags & PERL_LOADMOD_IMPORT_OPS) { | |
4846 | imop = va_arg(*args, OP*); | |
4847 | } | |
4848 | else { | |
4849 | SV *sv; | |
5f66b61c | 4850 | imop = NULL; |
e4783991 GS |
4851 | sv = va_arg(*args, SV*); |
4852 | while (sv) { | |
2fcb4757 | 4853 | imop = op_append_elem(OP_LIST, imop, newSVOP(OP_CONST, 0, sv)); |
e4783991 GS |
4854 | sv = va_arg(*args, SV*); |
4855 | } | |
4856 | } | |
81885997 | 4857 | |
53a7735b DM |
4858 | /* utilize() fakes up a BEGIN { require ..; import ... }, so make sure |
4859 | * that it has a PL_parser to play with while doing that, and also | |
4860 | * that it doesn't mess with any existing parser, by creating a tmp | |
4861 | * new parser with lex_start(). This won't actually be used for much, | |
4862 | * since pp_require() will create another parser for the real work. */ | |
4863 | ||
4864 | ENTER; | |
4865 | SAVEVPTR(PL_curcop); | |
27fcb6ee | 4866 | lex_start(NULL, NULL, LEX_START_SAME_FILTER); |
53a7735b DM |
4867 | utilize(!(flags & PERL_LOADMOD_DENY), start_subparse(FALSE, 0), |
4868 | veop, modname, imop); | |
4869 | LEAVE; | |
e4783991 GS |
4870 | } |
4871 | ||
79072805 | 4872 | OP * |
850e8516 | 4873 | Perl_dofile(pTHX_ OP *term, I32 force_builtin) |
78ca652e | 4874 | { |
97aff369 | 4875 | dVAR; |
78ca652e | 4876 | OP *doop; |
a0714e2c | 4877 | GV *gv = NULL; |
78ca652e | 4878 | |
7918f24d NC |
4879 | PERL_ARGS_ASSERT_DOFILE; |
4880 | ||
850e8516 | 4881 | if (!force_builtin) { |
fafc274c | 4882 | gv = gv_fetchpvs("do", GV_NOTQUAL, SVt_PVCV); |
850e8516 | 4883 | if (!(gv && GvCVu(gv) && GvIMPORTED_CV(gv))) { |
a4fc7abc | 4884 | GV * const * const gvp = (GV**)hv_fetchs(PL_globalstash, "do", FALSE); |
a0714e2c | 4885 | gv = gvp ? *gvp : NULL; |
850e8516 RGS |
4886 | } |
4887 | } | |
78ca652e | 4888 | |
b9f751c0 | 4889 | if (gv && GvCVu(gv) && GvIMPORTED_CV(gv)) { |
213aa87d | 4890 | doop = newUNOP(OP_ENTERSUB, OPf_STACKED, |
2fcb4757 | 4891 | op_append_elem(OP_LIST, term, |
78ca652e | 4892 | scalar(newUNOP(OP_RV2CV, 0, |
213aa87d | 4893 | newGVOP(OP_GV, 0, gv))))); |
78ca652e GS |
4894 | } |
4895 | else { | |
4896 | doop = newUNOP(OP_DOFILE, 0, scalar(term)); | |
4897 | } | |
4898 | return doop; | |
4899 | } | |
4900 | ||
d67eb5f4 Z |
4901 | /* |
4902 | =head1 Optree construction | |
4903 | ||
4904 | =for apidoc Am|OP *|newSLICEOP|I32 flags|OP *subscript|OP *listval | |
4905 | ||
4906 | Constructs, checks, and returns an C<lslice> (list slice) op. I<flags> | |
4907 | gives the eight bits of C<op_flags>, except that C<OPf_KIDS> will | |
4908 | be set automatically, and, shifted up eight bits, the eight bits of | |
4909 | C<op_private>, except that the bit with value 1 or 2 is automatically | |
4910 | set as required. I<listval> and I<subscript> supply the parameters of | |
4911 | the slice; they are consumed by this function and become part of the | |
4912 | constructed op tree. | |
4913 | ||
4914 | =cut | |
4915 | */ | |
4916 | ||
78ca652e | 4917 | OP * |
864dbfa3 | 4918 | Perl_newSLICEOP(pTHX_ I32 flags, OP *subscript, OP *listval) |
79072805 LW |
4919 | { |
4920 | return newBINOP(OP_LSLICE, flags, | |
8990e307 LW |
4921 | list(force_list(subscript)), |
4922 | list(force_list(listval)) ); | |
79072805 LW |
4923 | } |
4924 | ||
76e3520e | 4925 | STATIC I32 |
504618e9 | 4926 | S_is_list_assignment(pTHX_ register const OP *o) |
79072805 | 4927 | { |
1496a290 AL |
4928 | unsigned type; |
4929 | U8 flags; | |
4930 | ||
11343788 | 4931 | if (!o) |
79072805 LW |
4932 | return TRUE; |
4933 | ||
1496a290 | 4934 | if ((o->op_type == OP_NULL) && (o->op_flags & OPf_KIDS)) |
11343788 | 4935 | o = cUNOPo->op_first; |
79072805 | 4936 | |
1496a290 AL |
4937 | flags = o->op_flags; |
4938 | type = o->op_type; | |
4939 | if (type == OP_COND_EXPR) { | |
504618e9 AL |
4940 | const I32 t = is_list_assignment(cLOGOPo->op_first->op_sibling); |
4941 | const I32 f = is_list_assignment(cLOGOPo->op_first->op_sibling->op_sibling); | |
79072805 LW |
4942 | |
4943 | if (t && f) | |
4944 | return TRUE; | |
4945 | if (t || f) | |
4946 | yyerror("Assignment to both a list and a scalar"); | |
4947 | return FALSE; | |
4948 | } | |
4949 | ||
1496a290 AL |
4950 | if (type == OP_LIST && |
4951 | (flags & OPf_WANT) == OPf_WANT_SCALAR && | |
95f0a2f1 SB |
4952 | o->op_private & OPpLVAL_INTRO) |
4953 | return FALSE; | |
4954 | ||
1496a290 AL |
4955 | if (type == OP_LIST || flags & OPf_PARENS || |
4956 | type == OP_RV2AV || type == OP_RV2HV || | |
4957 | type == OP_ASLICE || type == OP_HSLICE) | |
79072805 LW |
4958 | return TRUE; |
4959 | ||
1496a290 | 4960 | if (type == OP_PADAV || type == OP_PADHV) |
93a17b20 LW |
4961 | return TRUE; |
4962 | ||
1496a290 | 4963 | if (type == OP_RV2SV) |
79072805 LW |
4964 | return FALSE; |
4965 | ||
4966 | return FALSE; | |
4967 | } | |
4968 | ||
d67eb5f4 | 4969 | /* |
83f9fced GG |
4970 | Helper function for newASSIGNOP to detection commonality between the |
4971 | lhs and the rhs. Marks all variables with PL_generation. If it | |
4972 | returns TRUE the assignment must be able to handle common variables. | |
4973 | */ | |
4974 | PERL_STATIC_INLINE bool | |
4975 | S_aassign_common_vars(pTHX_ OP* o) | |
4976 | { | |
83f9fced | 4977 | OP *curop; |
3023b5f3 | 4978 | for (curop = cUNOPo->op_first; curop; curop=curop->op_sibling) { |
83f9fced GG |
4979 | if (PL_opargs[curop->op_type] & OA_DANGEROUS) { |
4980 | if (curop->op_type == OP_GV) { | |
4981 | GV *gv = cGVOPx_gv(curop); | |
4982 | if (gv == PL_defgv | |
4983 | || (int)GvASSIGN_GENERATION(gv) == PL_generation) | |
4984 | return TRUE; | |
4985 | GvASSIGN_GENERATION_set(gv, PL_generation); | |
4986 | } | |
4987 | else if (curop->op_type == OP_PADSV || | |
4988 | curop->op_type == OP_PADAV || | |
4989 | curop->op_type == OP_PADHV || | |
4990 | curop->op_type == OP_PADANY) | |
4991 | { | |
4992 | if (PAD_COMPNAME_GEN(curop->op_targ) | |
4993 | == (STRLEN)PL_generation) | |
4994 | return TRUE; | |
4995 | PAD_COMPNAME_GEN_set(curop->op_targ, PL_generation); | |
4996 | ||
4997 | } | |
4998 | else if (curop->op_type == OP_RV2CV) | |
4999 | return TRUE; | |
5000 | else if (curop->op_type == OP_RV2SV || | |
5001 | curop->op_type == OP_RV2AV || | |
5002 | curop->op_type == OP_RV2HV || | |
5003 | curop->op_type == OP_RV2GV) { | |
3023b5f3 | 5004 | if (cUNOPx(curop)->op_first->op_type != OP_GV) /* funny deref? */ |
83f9fced GG |
5005 | return TRUE; |
5006 | } | |
5007 | else if (curop->op_type == OP_PUSHRE) { | |
5008 | #ifdef USE_ITHREADS | |
5009 | if (((PMOP*)curop)->op_pmreplrootu.op_pmtargetoff) { | |
5010 | GV *const gv = MUTABLE_GV(PAD_SVl(((PMOP*)curop)->op_pmreplrootu.op_pmtargetoff)); | |
5011 | if (gv == PL_defgv | |
5012 | || (int)GvASSIGN_GENERATION(gv) == PL_generation) | |
5013 | return TRUE; | |
5014 | GvASSIGN_GENERATION_set(gv, PL_generation); | |
5015 | } | |
5016 | #else | |
5017 | GV *const gv | |
5018 | = ((PMOP*)curop)->op_pmreplrootu.op_pmtargetgv; | |
5019 | if (gv) { | |
5020 | if (gv == PL_defgv | |
5021 | || (int)GvASSIGN_GENERATION(gv) == PL_generation) | |
5022 | return TRUE; | |
5023 | GvASSIGN_GENERATION_set(gv, PL_generation); | |
5024 | } | |
5025 | #endif | |
5026 | } | |
5027 | else | |
5028 | return TRUE; | |
5029 | } | |
3023b5f3 GG |
5030 | |
5031 | if (curop->op_flags & OPf_KIDS) { | |
5032 | if (aassign_common_vars(curop)) | |
5033 | return TRUE; | |
5034 | } | |
83f9fced GG |
5035 | } |
5036 | return FALSE; | |
5037 | } | |
5038 | ||
5039 | /* | |
d67eb5f4 Z |
5040 | =for apidoc Am|OP *|newASSIGNOP|I32 flags|OP *left|I32 optype|OP *right |
5041 | ||
5042 | Constructs, checks, and returns an assignment op. I<left> and I<right> | |
5043 | supply the parameters of the assignment; they are consumed by this | |
5044 | function and become part of the constructed op tree. | |
5045 | ||
5046 | If I<optype> is C<OP_ANDASSIGN>, C<OP_ORASSIGN>, or C<OP_DORASSIGN>, then | |
5047 | a suitable conditional optree is constructed. If I<optype> is the opcode | |
5048 | of a binary operator, such as C<OP_BIT_OR>, then an op is constructed that | |
5049 | performs the binary operation and assigns the result to the left argument. | |
5050 | Either way, if I<optype> is non-zero then I<flags> has no effect. | |
5051 | ||
5052 | If I<optype> is zero, then a plain scalar or list assignment is | |
5053 | constructed. Which type of assignment it is is automatically determined. | |
5054 | I<flags> gives the eight bits of C<op_flags>, except that C<OPf_KIDS> | |
5055 | will be set automatically, and, shifted up eight bits, the eight bits | |
5056 | of C<op_private>, except that the bit with value 1 or 2 is automatically | |
5057 | set as required. | |
5058 | ||
5059 | =cut | |
5060 | */ | |
5061 | ||
79072805 | 5062 | OP * |
864dbfa3 | 5063 | Perl_newASSIGNOP(pTHX_ I32 flags, OP *left, I32 optype, OP *right) |
79072805 | 5064 | { |
97aff369 | 5065 | dVAR; |
11343788 | 5066 | OP *o; |
79072805 | 5067 | |
a0d0e21e | 5068 | if (optype) { |
c963b151 | 5069 | if (optype == OP_ANDASSIGN || optype == OP_ORASSIGN || optype == OP_DORASSIGN) { |
a0d0e21e | 5070 | return newLOGOP(optype, 0, |
3ad73efd | 5071 | op_lvalue(scalar(left), optype), |
a0d0e21e LW |
5072 | newUNOP(OP_SASSIGN, 0, scalar(right))); |
5073 | } | |
5074 | else { | |
5075 | return newBINOP(optype, OPf_STACKED, | |
3ad73efd | 5076 | op_lvalue(scalar(left), optype), scalar(right)); |
a0d0e21e LW |
5077 | } |
5078 | } | |
5079 | ||
504618e9 | 5080 | if (is_list_assignment(left)) { |
6dbe9451 NC |
5081 | static const char no_list_state[] = "Initialization of state variables" |
5082 | " in list context currently forbidden"; | |
10c8fecd | 5083 | OP *curop; |
fafafbaf | 5084 | bool maybe_common_vars = TRUE; |
10c8fecd | 5085 | |
3280af22 | 5086 | PL_modcount = 0; |
3ad73efd | 5087 | left = op_lvalue(left, OP_AASSIGN); |
10c8fecd GS |
5088 | curop = list(force_list(left)); |
5089 | o = newBINOP(OP_AASSIGN, flags, list(force_list(right)), curop); | |
eb160463 | 5090 | o->op_private = (U8)(0 | (flags >> 8)); |
dd2155a4 | 5091 | |
fafafbaf RD |
5092 | if ((left->op_type == OP_LIST |
5093 | || (left->op_type == OP_NULL && left->op_targ == OP_LIST))) | |
5094 | { | |
5095 | OP* lop = ((LISTOP*)left)->op_first; | |
5096 | maybe_common_vars = FALSE; | |
5097 | while (lop) { | |
5098 | if (lop->op_type == OP_PADSV || | |
5099 | lop->op_type == OP_PADAV || | |
5100 | lop->op_type == OP_PADHV || | |
5101 | lop->op_type == OP_PADANY) { | |
5102 | if (!(lop->op_private & OPpLVAL_INTRO)) | |
5103 | maybe_common_vars = TRUE; | |
5104 | ||
5105 | if (lop->op_private & OPpPAD_STATE) { | |
5106 | if (left->op_private & OPpLVAL_INTRO) { | |
5107 | /* Each variable in state($a, $b, $c) = ... */ | |
5108 | } | |
5109 | else { | |
5110 | /* Each state variable in | |
5111 | (state $a, my $b, our $c, $d, undef) = ... */ | |
5112 | } | |
5113 | yyerror(no_list_state); | |
5114 | } else { | |
5115 | /* Each my variable in | |
5116 | (state $a, my $b, our $c, $d, undef) = ... */ | |
5117 | } | |
5118 | } else if (lop->op_type == OP_UNDEF || | |
5119 | lop->op_type == OP_PUSHMARK) { | |
5120 | /* undef may be interesting in | |
5121 | (state $a, undef, state $c) */ | |
5122 | } else { | |
5123 | /* Other ops in the list. */ | |
5124 | maybe_common_vars = TRUE; | |
5125 | } | |
5126 | lop = lop->op_sibling; | |
5127 | } | |
5128 | } | |
5129 | else if ((left->op_private & OPpLVAL_INTRO) | |
5130 | && ( left->op_type == OP_PADSV | |
5131 | || left->op_type == OP_PADAV | |
5132 | || left->op_type == OP_PADHV | |
5133 | || left->op_type == OP_PADANY)) | |
5134 | { | |
0f907b96 | 5135 | if (left->op_type == OP_PADSV) maybe_common_vars = FALSE; |
fafafbaf RD |
5136 | if (left->op_private & OPpPAD_STATE) { |
5137 | /* All single variable list context state assignments, hence | |
5138 | state ($a) = ... | |
5139 | (state $a) = ... | |
5140 | state @a = ... | |
5141 | state (@a) = ... | |
5142 | (state @a) = ... | |
5143 | state %a = ... | |
5144 | state (%a) = ... | |
5145 | (state %a) = ... | |
5146 | */ | |
5147 | yyerror(no_list_state); | |
5148 | } | |
5149 | } | |
5150 | ||
dd2155a4 DM |
5151 | /* PL_generation sorcery: |
5152 | * an assignment like ($a,$b) = ($c,$d) is easier than | |
5153 | * ($a,$b) = ($c,$a), since there is no need for temporary vars. | |
5154 | * To detect whether there are common vars, the global var | |
5155 | * PL_generation is incremented for each assign op we compile. | |
5156 | * Then, while compiling the assign op, we run through all the | |
5157 | * variables on both sides of the assignment, setting a spare slot | |
5158 | * in each of them to PL_generation. If any of them already have | |
5159 | * that value, we know we've got commonality. We could use a | |
5160 | * single bit marker, but then we'd have to make 2 passes, first | |
5161 | * to clear the flag, then to test and set it. To find somewhere | |
931b58fb | 5162 | * to store these values, evil chicanery is done with SvUVX(). |
dd2155a4 DM |
5163 | */ |
5164 | ||
fafafbaf | 5165 | if (maybe_common_vars) { |
3280af22 | 5166 | PL_generation++; |
83f9fced | 5167 | if (aassign_common_vars(o)) |
10c8fecd | 5168 | o->op_private |= OPpASSIGN_COMMON; |
3023b5f3 | 5169 | LINKLIST(o); |
461824dc | 5170 | } |
9fdc7570 | 5171 | |
e9cc17ba | 5172 | if (right && right->op_type == OP_SPLIT && !PL_madskills) { |
1496a290 AL |
5173 | OP* tmpop = ((LISTOP*)right)->op_first; |
5174 | if (tmpop && (tmpop->op_type == OP_PUSHRE)) { | |
551405c4 | 5175 | PMOP * const pm = (PMOP*)tmpop; |
c07a80fd | 5176 | if (left->op_type == OP_RV2AV && |
5177 | !(left->op_private & OPpLVAL_INTRO) && | |
11343788 | 5178 | !(o->op_private & OPpASSIGN_COMMON) ) |
c07a80fd | 5179 | { |
5180 | tmpop = ((UNOP*)left)->op_first; | |
20e98b0f NC |
5181 | if (tmpop->op_type == OP_GV |
5182 | #ifdef USE_ITHREADS | |
5183 | && !pm->op_pmreplrootu.op_pmtargetoff | |
5184 | #else | |
5185 | && !pm->op_pmreplrootu.op_pmtargetgv | |
5186 | #endif | |
5187 | ) { | |
971a9dd3 | 5188 | #ifdef USE_ITHREADS |
20e98b0f NC |
5189 | pm->op_pmreplrootu.op_pmtargetoff |
5190 | = cPADOPx(tmpop)->op_padix; | |
971a9dd3 GS |
5191 | cPADOPx(tmpop)->op_padix = 0; /* steal it */ |
5192 | #else | |
20e98b0f | 5193 | pm->op_pmreplrootu.op_pmtargetgv |
159b6efe | 5194 | = MUTABLE_GV(cSVOPx(tmpop)->op_sv); |
a0714e2c | 5195 | cSVOPx(tmpop)->op_sv = NULL; /* steal it */ |
971a9dd3 | 5196 | #endif |
c07a80fd | 5197 | pm->op_pmflags |= PMf_ONCE; |
11343788 | 5198 | tmpop = cUNOPo->op_first; /* to list (nulled) */ |
c07a80fd | 5199 | tmpop = ((UNOP*)tmpop)->op_first; /* to pushmark */ |
5f66b61c | 5200 | tmpop->op_sibling = NULL; /* don't free split */ |
c07a80fd | 5201 | right->op_next = tmpop->op_next; /* fix starting loc */ |
11343788 | 5202 | op_free(o); /* blow off assign */ |
54310121 | 5203 | right->op_flags &= ~OPf_WANT; |
a5f75d66 | 5204 | /* "I don't know and I don't care." */ |
c07a80fd | 5205 | return right; |
5206 | } | |
5207 | } | |
5208 | else { | |
e6438c1a | 5209 | if (PL_modcount < RETURN_UNLIMITED_NUMBER && |
c07a80fd | 5210 | ((LISTOP*)right)->op_last->op_type == OP_CONST) |
5211 | { | |
5212 | SV *sv = ((SVOP*)((LISTOP*)right)->op_last)->op_sv; | |
b8de32d5 | 5213 | if (SvIOK(sv) && SvIVX(sv) == 0) |
3280af22 | 5214 | sv_setiv(sv, PL_modcount+1); |
c07a80fd | 5215 | } |
5216 | } | |
5217 | } | |
5218 | } | |
11343788 | 5219 | return o; |
79072805 LW |
5220 | } |
5221 | if (!right) | |
5222 | right = newOP(OP_UNDEF, 0); | |
5223 | if (right->op_type == OP_READLINE) { | |
5224 | right->op_flags |= OPf_STACKED; | |
3ad73efd Z |
5225 | return newBINOP(OP_NULL, flags, op_lvalue(scalar(left), OP_SASSIGN), |
5226 | scalar(right)); | |
79072805 | 5227 | } |
a0d0e21e | 5228 | else { |
11343788 | 5229 | o = newBINOP(OP_SASSIGN, flags, |
3ad73efd | 5230 | scalar(right), op_lvalue(scalar(left), OP_SASSIGN) ); |
a0d0e21e | 5231 | } |
11343788 | 5232 | return o; |
79072805 LW |
5233 | } |
5234 | ||
d67eb5f4 Z |
5235 | /* |
5236 | =for apidoc Am|OP *|newSTATEOP|I32 flags|char *label|OP *o | |
5237 | ||
5238 | Constructs a state op (COP). The state op is normally a C<nextstate> op, | |
5239 | but will be a C<dbstate> op if debugging is enabled for currently-compiled | |
5240 | code. The state op is populated from L</PL_curcop> (or L</PL_compiling>). | |
5241 | If I<label> is non-null, it supplies the name of a label to attach to | |
5242 | the state op; this function takes ownership of the memory pointed at by | |
5243 | I<label>, and will free it. I<flags> gives the eight bits of C<op_flags> | |
5244 | for the state op. | |
5245 | ||
5246 | If I<o> is null, the state op is returned. Otherwise the state op is | |
5247 | combined with I<o> into a C<lineseq> list op, which is returned. I<o> | |
5248 | is consumed by this function and becomes part of the returned op tree. | |
5249 | ||
5250 | =cut | |
5251 | */ | |
5252 | ||
79072805 | 5253 | OP * |
864dbfa3 | 5254 | Perl_newSTATEOP(pTHX_ I32 flags, char *label, OP *o) |
79072805 | 5255 | { |
27da23d5 | 5256 | dVAR; |
e1ec3a88 | 5257 | const U32 seq = intro_my(); |
5db1eb8d | 5258 | const U32 utf8 = flags & SVf_UTF8; |
79072805 LW |
5259 | register COP *cop; |
5260 | ||
5db1eb8d BF |
5261 | flags &= ~SVf_UTF8; |
5262 | ||
b7dc083c | 5263 | NewOp(1101, cop, 1, COP); |
57843af0 | 5264 | if (PERLDB_LINE && CopLINE(PL_curcop) && PL_curstash != PL_debstash) { |
8990e307 | 5265 | cop->op_type = OP_DBSTATE; |
22c35a8c | 5266 | cop->op_ppaddr = PL_ppaddr[ OP_DBSTATE ]; |
8990e307 LW |
5267 | } |
5268 | else { | |
5269 | cop->op_type = OP_NEXTSTATE; | |
22c35a8c | 5270 | cop->op_ppaddr = PL_ppaddr[ OP_NEXTSTATE ]; |
8990e307 | 5271 | } |
eb160463 | 5272 | cop->op_flags = (U8)flags; |
623e6609 | 5273 | CopHINTS_set(cop, PL_hints); |
ff0cee69 | 5274 | #ifdef NATIVE_HINTS |
5275 | cop->op_private |= NATIVE_HINTS; | |
5276 | #endif | |
623e6609 | 5277 | CopHINTS_set(&PL_compiling, CopHINTS_get(cop)); |
79072805 LW |
5278 | cop->op_next = (OP*)cop; |
5279 | ||
bbce6d69 | 5280 | cop->cop_seq = seq; |
72dc9ed5 | 5281 | cop->cop_warnings = DUP_WARNINGS(PL_curcop->cop_warnings); |
20439bc7 | 5282 | CopHINTHASH_set(cop, cophh_copy(CopHINTHASH_get(PL_curcop))); |
dca6062a | 5283 | if (label) { |
5db1eb8d BF |
5284 | Perl_cop_store_label(aTHX_ cop, label, strlen(label), utf8); |
5285 | ||
dca6062a NC |
5286 | PL_hints |= HINT_BLOCK_SCOPE; |
5287 | /* It seems that we need to defer freeing this pointer, as other parts | |
5288 | of the grammar end up wanting to copy it after this op has been | |
5289 | created. */ | |
5290 | SAVEFREEPV(label); | |
dca6062a | 5291 | } |
79072805 | 5292 | |
53a7735b | 5293 | if (PL_parser && PL_parser->copline == NOLINE) |
57843af0 | 5294 | CopLINE_set(cop, CopLINE(PL_curcop)); |
79072805 | 5295 | else { |
53a7735b DM |
5296 | CopLINE_set(cop, PL_parser->copline); |
5297 | if (PL_parser) | |
5298 | PL_parser->copline = NOLINE; | |
79072805 | 5299 | } |
57843af0 | 5300 | #ifdef USE_ITHREADS |
f4dd75d9 | 5301 | CopFILE_set(cop, CopFILE(PL_curcop)); /* XXX share in a pvtable? */ |
57843af0 | 5302 | #else |
f4dd75d9 | 5303 | CopFILEGV_set(cop, CopFILEGV(PL_curcop)); |
57843af0 | 5304 | #endif |
11faa288 | 5305 | CopSTASH_set(cop, PL_curstash); |
79072805 | 5306 | |
65269a95 TB |
5307 | if ((PERLDB_LINE || PERLDB_SAVESRC) && PL_curstash != PL_debstash) { |
5308 | /* this line can have a breakpoint - store the cop in IV */ | |
80a702cd RGS |
5309 | AV *av = CopFILEAVx(PL_curcop); |
5310 | if (av) { | |
5311 | SV * const * const svp = av_fetch(av, (I32)CopLINE(cop), FALSE); | |
5312 | if (svp && *svp != &PL_sv_undef ) { | |
5313 | (void)SvIOK_on(*svp); | |
5314 | SvIV_set(*svp, PTR2IV(cop)); | |
5315 | } | |
1eb1540c | 5316 | } |
93a17b20 LW |
5317 | } |
5318 | ||
f6f3a1fe RGS |
5319 | if (flags & OPf_SPECIAL) |
5320 | op_null((OP*)cop); | |
2fcb4757 | 5321 | return op_prepend_elem(OP_LINESEQ, (OP*)cop, o); |
79072805 LW |
5322 | } |
5323 | ||
d67eb5f4 Z |
5324 | /* |
5325 | =for apidoc Am|OP *|newLOGOP|I32 type|I32 flags|OP *first|OP *other | |
5326 | ||
5327 | Constructs, checks, and returns a logical (flow control) op. I<type> | |
5328 | is the opcode. I<flags> gives the eight bits of C<op_flags>, except | |
5329 | that C<OPf_KIDS> will be set automatically, and, shifted up eight bits, | |
5330 | the eight bits of C<op_private>, except that the bit with value 1 is | |
5331 | automatically set. I<first> supplies the expression controlling the | |
5332 | flow, and I<other> supplies the side (alternate) chain of ops; they are | |
5333 | consumed by this function and become part of the constructed op tree. | |
5334 | ||
5335 | =cut | |
5336 | */ | |
bbce6d69 | 5337 | |
79072805 | 5338 | OP * |
864dbfa3 | 5339 | Perl_newLOGOP(pTHX_ I32 type, I32 flags, OP *first, OP *other) |
79072805 | 5340 | { |
27da23d5 | 5341 | dVAR; |
7918f24d NC |
5342 | |
5343 | PERL_ARGS_ASSERT_NEWLOGOP; | |
5344 | ||
883ffac3 CS |
5345 | return new_logop(type, flags, &first, &other); |
5346 | } | |
5347 | ||
3bd495df | 5348 | STATIC OP * |
71c4dbc3 VP |
5349 | S_search_const(pTHX_ OP *o) |
5350 | { | |
5351 | PERL_ARGS_ASSERT_SEARCH_CONST; | |
5352 | ||
5353 | switch (o->op_type) { | |
5354 | case OP_CONST: | |
5355 | return o; | |
5356 | case OP_NULL: | |
5357 | if (o->op_flags & OPf_KIDS) | |
5358 | return search_const(cUNOPo->op_first); | |
5359 | break; | |
5360 | case OP_LEAVE: | |
5361 | case OP_SCOPE: | |
5362 | case OP_LINESEQ: | |
5363 | { | |
5364 | OP *kid; | |
5365 | if (!(o->op_flags & OPf_KIDS)) | |
5366 | return NULL; | |
5367 | kid = cLISTOPo->op_first; | |
5368 | do { | |
5369 | switch (kid->op_type) { | |
5370 | case OP_ENTER: | |
5371 | case OP_NULL: | |
5372 | case OP_NEXTSTATE: | |
5373 | kid = kid->op_sibling; | |
5374 | break; | |
5375 | default: | |
5376 | if (kid != cLISTOPo->op_last) | |
5377 | return NULL; | |
5378 | goto last; | |
5379 | } | |
5380 | } while (kid); | |
5381 | if (!kid) | |
5382 | kid = cLISTOPo->op_last; | |
5383 | last: | |
5384 | return search_const(kid); | |
5385 | } | |
5386 | } | |
5387 | ||
5388 | return NULL; | |
5389 | } | |
5390 | ||
5391 | STATIC OP * | |
cea2e8a9 | 5392 | S_new_logop(pTHX_ I32 type, I32 flags, OP** firstp, OP** otherp) |
883ffac3 | 5393 | { |
27da23d5 | 5394 | dVAR; |
79072805 | 5395 | LOGOP *logop; |
11343788 | 5396 | OP *o; |
71c4dbc3 VP |
5397 | OP *first; |
5398 | OP *other; | |
5399 | OP *cstop = NULL; | |
edbe35ea | 5400 | int prepend_not = 0; |
79072805 | 5401 | |
7918f24d NC |
5402 | PERL_ARGS_ASSERT_NEW_LOGOP; |
5403 | ||
71c4dbc3 VP |
5404 | first = *firstp; |
5405 | other = *otherp; | |
5406 | ||
a0d0e21e LW |
5407 | if (type == OP_XOR) /* Not short circuit, but here by precedence. */ |
5408 | return newBINOP(type, flags, scalar(first), scalar(other)); | |
5409 | ||
e69777c1 GG |
5410 | assert((PL_opargs[type] & OA_CLASS_MASK) == OA_LOGOP); |
5411 | ||
8990e307 | 5412 | scalarboolean(first); |
edbe35ea | 5413 | /* optimize AND and OR ops that have NOTs as children */ |
68726e16 | 5414 | if (first->op_type == OP_NOT |
b6214b80 | 5415 | && (first->op_flags & OPf_KIDS) |
edbe35ea VP |
5416 | && ((first->op_flags & OPf_SPECIAL) /* unless ($x) { } */ |
5417 | || (other->op_type == OP_NOT)) /* if (!$x && !$y) { } */ | |
b6214b80 | 5418 | && !PL_madskills) { |
79072805 LW |
5419 | if (type == OP_AND || type == OP_OR) { |
5420 | if (type == OP_AND) | |
5421 | type = OP_OR; | |
5422 | else | |
5423 | type = OP_AND; | |
07f3cdf5 | 5424 | op_null(first); |
edbe35ea | 5425 | if (other->op_type == OP_NOT) { /* !a AND|OR !b => !(a OR|AND b) */ |
07f3cdf5 | 5426 | op_null(other); |
edbe35ea VP |
5427 | prepend_not = 1; /* prepend a NOT op later */ |
5428 | } | |
79072805 LW |
5429 | } |
5430 | } | |
71c4dbc3 VP |
5431 | /* search for a constant op that could let us fold the test */ |
5432 | if ((cstop = search_const(first))) { | |
5433 | if (cstop->op_private & OPpCONST_STRICT) | |
5434 | no_bareword_allowed(cstop); | |
a2a5de95 NC |
5435 | else if ((cstop->op_private & OPpCONST_BARE)) |
5436 | Perl_ck_warner(aTHX_ packWARN(WARN_BAREWORD), "Bareword found in conditional"); | |
71c4dbc3 VP |
5437 | if ((type == OP_AND && SvTRUE(((SVOP*)cstop)->op_sv)) || |
5438 | (type == OP_OR && !SvTRUE(((SVOP*)cstop)->op_sv)) || | |
5439 | (type == OP_DOR && !SvOK(((SVOP*)cstop)->op_sv))) { | |
5f66b61c | 5440 | *firstp = NULL; |
d6fee5c7 DM |
5441 | if (other->op_type == OP_CONST) |
5442 | other->op_private |= OPpCONST_SHORTCIRCUIT; | |
eb8433b7 NC |
5443 | if (PL_madskills) { |
5444 | OP *newop = newUNOP(OP_NULL, 0, other); | |
5445 | op_getmad(first, newop, '1'); | |
5446 | newop->op_targ = type; /* set "was" field */ | |
5447 | return newop; | |
5448 | } | |
5449 | op_free(first); | |
dd3e51dc VP |
5450 | if (other->op_type == OP_LEAVE) |
5451 | other = newUNOP(OP_NULL, OPf_SPECIAL, other); | |
2474a784 FC |
5452 | else if (other->op_type == OP_MATCH |
5453 | || other->op_type == OP_SUBST | |
bb16bae8 | 5454 | || other->op_type == OP_TRANSR |
2474a784 FC |
5455 | || other->op_type == OP_TRANS) |
5456 | /* Mark the op as being unbindable with =~ */ | |
5457 | other->op_flags |= OPf_SPECIAL; | |
79072805 LW |
5458 | return other; |
5459 | } | |
5460 | else { | |
7921d0f2 | 5461 | /* check for C<my $x if 0>, or C<my($x,$y) if 0> */ |
6867be6d | 5462 | const OP *o2 = other; |
7921d0f2 DM |
5463 | if ( ! (o2->op_type == OP_LIST |
5464 | && (( o2 = cUNOPx(o2)->op_first)) | |
5465 | && o2->op_type == OP_PUSHMARK | |
5466 | && (( o2 = o2->op_sibling)) ) | |
5467 | ) | |
5468 | o2 = other; | |
5469 | if ((o2->op_type == OP_PADSV || o2->op_type == OP_PADAV | |
5470 | || o2->op_type == OP_PADHV) | |
5471 | && o2->op_private & OPpLVAL_INTRO | |
a2a5de95 | 5472 | && !(o2->op_private & OPpPAD_STATE)) |
7921d0f2 | 5473 | { |
d1d15184 NC |
5474 | Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED), |
5475 | "Deprecated use of my() in false conditional"); | |
7921d0f2 DM |
5476 | } |
5477 | ||
5f66b61c | 5478 | *otherp = NULL; |
d6fee5c7 DM |
5479 | if (first->op_type == OP_CONST) |
5480 | first->op_private |= OPpCONST_SHORTCIRCUIT; | |
eb8433b7 NC |
5481 | if (PL_madskills) { |
5482 | first = newUNOP(OP_NULL, 0, first); | |
5483 | op_getmad(other, first, '2'); | |
5484 | first->op_targ = type; /* set "was" field */ | |
5485 | } | |
5486 | else | |
5487 | op_free(other); | |
79072805 LW |
5488 | return first; |
5489 | } | |
5490 | } | |
041457d9 DM |
5491 | else if ((first->op_flags & OPf_KIDS) && type != OP_DOR |
5492 | && ckWARN(WARN_MISC)) /* [#24076] Don't warn for <FH> err FOO. */ | |
59e10468 | 5493 | { |
b22e6366 AL |
5494 | const OP * const k1 = ((UNOP*)first)->op_first; |
5495 | const OP * const k2 = k1->op_sibling; | |
a6006777 | 5496 | OPCODE warnop = 0; |
5497 | switch (first->op_type) | |
5498 | { | |
5499 | case OP_NULL: | |
5500 | if (k2 && k2->op_type == OP_READLINE | |
5501 | && (k2->op_flags & OPf_STACKED) | |
1c846c1f | 5502 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
72b16652 | 5503 | { |
a6006777 | 5504 | warnop = k2->op_type; |
72b16652 | 5505 | } |
a6006777 | 5506 | break; |
5507 | ||
5508 | case OP_SASSIGN: | |
68dc0745 | 5509 | if (k1->op_type == OP_READDIR |
5510 | || k1->op_type == OP_GLOB | |
72b16652 | 5511 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) |
459b64da HY |
5512 | || k1->op_type == OP_EACH |
5513 | || k1->op_type == OP_AEACH) | |
72b16652 GS |
5514 | { |
5515 | warnop = ((k1->op_type == OP_NULL) | |
eb160463 | 5516 | ? (OPCODE)k1->op_targ : k1->op_type); |
72b16652 | 5517 | } |
a6006777 | 5518 | break; |
5519 | } | |
8ebc5c01 | 5520 | if (warnop) { |
6867be6d | 5521 | const line_t oldline = CopLINE(PL_curcop); |
53a7735b | 5522 | CopLINE_set(PL_curcop, PL_parser->copline); |
9014280d | 5523 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
599cee73 | 5524 | "Value of %s%s can be \"0\"; test with defined()", |
22c35a8c | 5525 | PL_op_desc[warnop], |
68dc0745 | 5526 | ((warnop == OP_READLINE || warnop == OP_GLOB) |
5527 | ? " construct" : "() operator")); | |
57843af0 | 5528 | CopLINE_set(PL_curcop, oldline); |
8ebc5c01 | 5529 | } |
a6006777 | 5530 | } |
79072805 LW |
5531 | |
5532 | if (!other) | |
5533 | return first; | |
5534 | ||
c963b151 | 5535 | if (type == OP_ANDASSIGN || type == OP_ORASSIGN || type == OP_DORASSIGN) |
a0d0e21e LW |
5536 | other->op_private |= OPpASSIGN_BACKWARDS; /* other is an OP_SASSIGN */ |
5537 | ||
b7dc083c | 5538 | NewOp(1101, logop, 1, LOGOP); |
79072805 | 5539 | |
eb160463 | 5540 | logop->op_type = (OPCODE)type; |
22c35a8c | 5541 | logop->op_ppaddr = PL_ppaddr[type]; |
79072805 | 5542 | logop->op_first = first; |
585ec06d | 5543 | logop->op_flags = (U8)(flags | OPf_KIDS); |
79072805 | 5544 | logop->op_other = LINKLIST(other); |
eb160463 | 5545 | logop->op_private = (U8)(1 | (flags >> 8)); |
79072805 LW |
5546 | |
5547 | /* establish postfix order */ | |
5548 | logop->op_next = LINKLIST(first); | |
5549 | first->op_next = (OP*)logop; | |
5550 | first->op_sibling = other; | |
5551 | ||
463d09e6 RGS |
5552 | CHECKOP(type,logop); |
5553 | ||
edbe35ea | 5554 | o = newUNOP(prepend_not ? OP_NOT : OP_NULL, 0, (OP*)logop); |
11343788 | 5555 | other->op_next = o; |
79072805 | 5556 | |
11343788 | 5557 | return o; |
79072805 LW |
5558 | } |
5559 | ||
d67eb5f4 Z |
5560 | /* |
5561 | =for apidoc Am|OP *|newCONDOP|I32 flags|OP *first|OP *trueop|OP *falseop | |
5562 | ||
5563 | Constructs, checks, and returns a conditional-expression (C<cond_expr>) | |
5564 | op. I<flags> gives the eight bits of C<op_flags>, except that C<OPf_KIDS> | |
5565 | will be set automatically, and, shifted up eight bits, the eight bits of | |
5566 | C<op_private>, except that the bit with value 1 is automatically set. | |
5567 | I<first> supplies the expression selecting between the two branches, | |
5568 | and I<trueop> and I<falseop> supply the branches; they are consumed by | |
5569 | this function and become part of the constructed op tree. | |
5570 | ||
5571 | =cut | |
5572 | */ | |
5573 | ||
79072805 | 5574 | OP * |
864dbfa3 | 5575 | Perl_newCONDOP(pTHX_ I32 flags, OP *first, OP *trueop, OP *falseop) |
79072805 | 5576 | { |
27da23d5 | 5577 | dVAR; |
1a67a97c SM |
5578 | LOGOP *logop; |
5579 | OP *start; | |
11343788 | 5580 | OP *o; |
71c4dbc3 | 5581 | OP *cstop; |
79072805 | 5582 | |
7918f24d NC |
5583 | PERL_ARGS_ASSERT_NEWCONDOP; |
5584 | ||
b1cb66bf | 5585 | if (!falseop) |
5586 | return newLOGOP(OP_AND, 0, first, trueop); | |
5587 | if (!trueop) | |
5588 | return newLOGOP(OP_OR, 0, first, falseop); | |
79072805 | 5589 | |
8990e307 | 5590 | scalarboolean(first); |
71c4dbc3 | 5591 | if ((cstop = search_const(first))) { |
5b6782b2 | 5592 | /* Left or right arm of the conditional? */ |
71c4dbc3 | 5593 | const bool left = SvTRUE(((SVOP*)cstop)->op_sv); |
5b6782b2 NC |
5594 | OP *live = left ? trueop : falseop; |
5595 | OP *const dead = left ? falseop : trueop; | |
71c4dbc3 VP |
5596 | if (cstop->op_private & OPpCONST_BARE && |
5597 | cstop->op_private & OPpCONST_STRICT) { | |
5598 | no_bareword_allowed(cstop); | |
b22e6366 | 5599 | } |
5b6782b2 NC |
5600 | if (PL_madskills) { |
5601 | /* This is all dead code when PERL_MAD is not defined. */ | |
5602 | live = newUNOP(OP_NULL, 0, live); | |
5603 | op_getmad(first, live, 'C'); | |
5604 | op_getmad(dead, live, left ? 'e' : 't'); | |
5605 | } else { | |
5606 | op_free(first); | |
5607 | op_free(dead); | |
79072805 | 5608 | } |
ef9da979 FC |
5609 | if (live->op_type == OP_LEAVE) |
5610 | live = newUNOP(OP_NULL, OPf_SPECIAL, live); | |
2474a784 | 5611 | else if (live->op_type == OP_MATCH || live->op_type == OP_SUBST |
bb16bae8 | 5612 | || live->op_type == OP_TRANS || live->op_type == OP_TRANSR) |
2474a784 FC |
5613 | /* Mark the op as being unbindable with =~ */ |
5614 | live->op_flags |= OPf_SPECIAL; | |
5b6782b2 | 5615 | return live; |
79072805 | 5616 | } |
1a67a97c SM |
5617 | NewOp(1101, logop, 1, LOGOP); |
5618 | logop->op_type = OP_COND_EXPR; | |
5619 | logop->op_ppaddr = PL_ppaddr[OP_COND_EXPR]; | |
5620 | logop->op_first = first; | |
585ec06d | 5621 | logop->op_flags = (U8)(flags | OPf_KIDS); |
eb160463 | 5622 | logop->op_private = (U8)(1 | (flags >> 8)); |
1a67a97c SM |
5623 | logop->op_other = LINKLIST(trueop); |
5624 | logop->op_next = LINKLIST(falseop); | |
79072805 | 5625 | |
463d09e6 RGS |
5626 | CHECKOP(OP_COND_EXPR, /* that's logop->op_type */ |
5627 | logop); | |
79072805 LW |
5628 | |
5629 | /* establish postfix order */ | |
1a67a97c SM |
5630 | start = LINKLIST(first); |
5631 | first->op_next = (OP*)logop; | |
79072805 | 5632 | |
b1cb66bf | 5633 | first->op_sibling = trueop; |
5634 | trueop->op_sibling = falseop; | |
1a67a97c | 5635 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
79072805 | 5636 | |
1a67a97c | 5637 | trueop->op_next = falseop->op_next = o; |
79072805 | 5638 | |
1a67a97c | 5639 | o->op_next = start; |
11343788 | 5640 | return o; |
79072805 LW |
5641 | } |
5642 | ||
d67eb5f4 Z |
5643 | /* |
5644 | =for apidoc Am|OP *|newRANGE|I32 flags|OP *left|OP *right | |
5645 | ||
5646 | Constructs and returns a C<range> op, with subordinate C<flip> and | |
5647 | C<flop> ops. I<flags> gives the eight bits of C<op_flags> for the | |
5648 | C<flip> op and, shifted up eight bits, the eight bits of C<op_private> | |
5649 | for both the C<flip> and C<range> ops, except that the bit with value | |
5650 | 1 is automatically set. I<left> and I<right> supply the expressions | |
5651 | controlling the endpoints of the range; they are consumed by this function | |
5652 | and become part of the constructed op tree. | |
5653 | ||
5654 | =cut | |
5655 | */ | |
5656 | ||
79072805 | 5657 | OP * |
864dbfa3 | 5658 | Perl_newRANGE(pTHX_ I32 flags, OP *left, OP *right) |
79072805 | 5659 | { |
27da23d5 | 5660 | dVAR; |
1a67a97c | 5661 | LOGOP *range; |
79072805 LW |
5662 | OP *flip; |
5663 | OP *flop; | |
1a67a97c | 5664 | OP *leftstart; |
11343788 | 5665 | OP *o; |
79072805 | 5666 | |
7918f24d NC |
5667 | PERL_ARGS_ASSERT_NEWRANGE; |
5668 | ||
1a67a97c | 5669 | NewOp(1101, range, 1, LOGOP); |
79072805 | 5670 | |
1a67a97c SM |
5671 | range->op_type = OP_RANGE; |
5672 | range->op_ppaddr = PL_ppaddr[OP_RANGE]; | |
5673 | range->op_first = left; | |
5674 | range->op_flags = OPf_KIDS; | |
5675 | leftstart = LINKLIST(left); | |
5676 | range->op_other = LINKLIST(right); | |
eb160463 | 5677 | range->op_private = (U8)(1 | (flags >> 8)); |
79072805 LW |
5678 | |
5679 | left->op_sibling = right; | |
5680 | ||
1a67a97c SM |
5681 | range->op_next = (OP*)range; |
5682 | flip = newUNOP(OP_FLIP, flags, (OP*)range); | |
79072805 | 5683 | flop = newUNOP(OP_FLOP, 0, flip); |
11343788 | 5684 | o = newUNOP(OP_NULL, 0, flop); |
5983a79d | 5685 | LINKLIST(flop); |
1a67a97c | 5686 | range->op_next = leftstart; |
79072805 LW |
5687 | |
5688 | left->op_next = flip; | |
5689 | right->op_next = flop; | |
5690 | ||
1a67a97c SM |
5691 | range->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
5692 | sv_upgrade(PAD_SV(range->op_targ), SVt_PVNV); | |
ed6116ce | 5693 | flip->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 LW |
5694 | sv_upgrade(PAD_SV(flip->op_targ), SVt_PVNV); |
5695 | ||
5696 | flip->op_private = left->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
5697 | flop->op_private = right->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
5698 | ||
eb796c7f GG |
5699 | /* check barewords before they might be optimized aways */ |
5700 | if (flip->op_private && cSVOPx(left)->op_private & OPpCONST_STRICT) | |
5701 | no_bareword_allowed(left); | |
5702 | if (flop->op_private && cSVOPx(right)->op_private & OPpCONST_STRICT) | |
5703 | no_bareword_allowed(right); | |
5704 | ||
11343788 | 5705 | flip->op_next = o; |
79072805 | 5706 | if (!flip->op_private || !flop->op_private) |
5983a79d | 5707 | LINKLIST(o); /* blow off optimizer unless constant */ |
79072805 | 5708 | |
11343788 | 5709 | return o; |
79072805 LW |
5710 | } |
5711 | ||
d67eb5f4 Z |
5712 | /* |
5713 | =for apidoc Am|OP *|newLOOPOP|I32 flags|I32 debuggable|OP *expr|OP *block | |
5714 | ||
5715 | Constructs, checks, and returns an op tree expressing a loop. This is | |
5716 | only a loop in the control flow through the op tree; it does not have | |
5717 | the heavyweight loop structure that allows exiting the loop by C<last> | |
5718 | and suchlike. I<flags> gives the eight bits of C<op_flags> for the | |
5719 | top-level op, except that some bits will be set automatically as required. | |
5720 | I<expr> supplies the expression controlling loop iteration, and I<block> | |
5721 | supplies the body of the loop; they are consumed by this function and | |
5722 | become part of the constructed op tree. I<debuggable> is currently | |
5723 | unused and should always be 1. | |
5724 | ||
5725 | =cut | |
5726 | */ | |
5727 | ||
79072805 | 5728 | OP * |
864dbfa3 | 5729 | Perl_newLOOPOP(pTHX_ I32 flags, I32 debuggable, OP *expr, OP *block) |
79072805 | 5730 | { |
97aff369 | 5731 | dVAR; |
463ee0b2 | 5732 | OP* listop; |
11343788 | 5733 | OP* o; |
73d840c0 | 5734 | const bool once = block && block->op_flags & OPf_SPECIAL && |
a0d0e21e | 5735 | (block->op_type == OP_ENTERSUB || block->op_type == OP_NULL); |
46c461b5 AL |
5736 | |
5737 | PERL_UNUSED_ARG(debuggable); | |
93a17b20 | 5738 | |
463ee0b2 LW |
5739 | if (expr) { |
5740 | if (once && expr->op_type == OP_CONST && !SvTRUE(((SVOP*)expr)->op_sv)) | |
5741 | return block; /* do {} while 0 does once */ | |
114c60ec BG |
5742 | if (expr->op_type == OP_READLINE |
5743 | || expr->op_type == OP_READDIR | |
5744 | || expr->op_type == OP_GLOB | |
8ae39f60 | 5745 | || expr->op_type == OP_EACH || expr->op_type == OP_AEACH |
fb73857a | 5746 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB)) { |
774d564b | 5747 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 5748 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 | 5749 | } else if (expr->op_flags & OPf_KIDS) { |
46c461b5 AL |
5750 | const OP * const k1 = ((UNOP*)expr)->op_first; |
5751 | const OP * const k2 = k1 ? k1->op_sibling : NULL; | |
55d729e4 | 5752 | switch (expr->op_type) { |
1c846c1f | 5753 | case OP_NULL: |
114c60ec | 5754 | if (k2 && (k2->op_type == OP_READLINE || k2->op_type == OP_READDIR) |
55d729e4 | 5755 | && (k2->op_flags & OPf_STACKED) |
1c846c1f | 5756 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
55d729e4 | 5757 | expr = newUNOP(OP_DEFINED, 0, expr); |
1c846c1f | 5758 | break; |
55d729e4 GS |
5759 | |
5760 | case OP_SASSIGN: | |
06dc7ac6 | 5761 | if (k1 && (k1->op_type == OP_READDIR |
55d729e4 | 5762 | || k1->op_type == OP_GLOB |
6531c3e6 | 5763 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) |
459b64da HY |
5764 | || k1->op_type == OP_EACH |
5765 | || k1->op_type == OP_AEACH)) | |
55d729e4 GS |
5766 | expr = newUNOP(OP_DEFINED, 0, expr); |
5767 | break; | |
5768 | } | |
774d564b | 5769 | } |
463ee0b2 | 5770 | } |
93a17b20 | 5771 | |
2fcb4757 | 5772 | /* if block is null, the next op_append_elem() would put UNSTACK, a scalar |
e1548254 RGS |
5773 | * op, in listop. This is wrong. [perl #27024] */ |
5774 | if (!block) | |
5775 | block = newOP(OP_NULL, 0); | |
2fcb4757 | 5776 | listop = op_append_elem(OP_LINESEQ, block, newOP(OP_UNSTACK, 0)); |
883ffac3 | 5777 | o = new_logop(OP_AND, 0, &expr, &listop); |
463ee0b2 | 5778 | |
883ffac3 CS |
5779 | if (listop) |
5780 | ((LISTOP*)listop)->op_last->op_next = LINKLIST(o); | |
79072805 | 5781 | |
11343788 MB |
5782 | if (once && o != listop) |
5783 | o->op_next = ((LOGOP*)cUNOPo->op_first)->op_other; | |
79072805 | 5784 | |
11343788 MB |
5785 | if (o == listop) |
5786 | o = newUNOP(OP_NULL, 0, o); /* or do {} while 1 loses outer block */ | |
748a9306 | 5787 | |
11343788 | 5788 | o->op_flags |= flags; |
3ad73efd | 5789 | o = op_scope(o); |
11343788 MB |
5790 | o->op_flags |= OPf_SPECIAL; /* suppress POPBLOCK curpm restoration*/ |
5791 | return o; | |
79072805 LW |
5792 | } |
5793 | ||
d67eb5f4 | 5794 | /* |
94bf0465 | 5795 | =for apidoc Am|OP *|newWHILEOP|I32 flags|I32 debuggable|LOOP *loop|OP *expr|OP *block|OP *cont|I32 has_my |
d67eb5f4 Z |
5796 | |
5797 | Constructs, checks, and returns an op tree expressing a C<while> loop. | |
5798 | This is a heavyweight loop, with structure that allows exiting the loop | |
5799 | by C<last> and suchlike. | |
5800 | ||
5801 | I<loop> is an optional preconstructed C<enterloop> op to use in the | |
5802 | loop; if it is null then a suitable op will be constructed automatically. | |
5803 | I<expr> supplies the loop's controlling expression. I<block> supplies the | |
5804 | main body of the loop, and I<cont> optionally supplies a C<continue> block | |
5805 | that operates as a second half of the body. All of these optree inputs | |
5806 | are consumed by this function and become part of the constructed op tree. | |
5807 | ||
5808 | I<flags> gives the eight bits of C<op_flags> for the C<leaveloop> | |
5809 | op and, shifted up eight bits, the eight bits of C<op_private> for | |
5810 | the C<leaveloop> op, except that (in both cases) some bits will be set | |
5811 | automatically. I<debuggable> is currently unused and should always be 1. | |
94bf0465 | 5812 | I<has_my> can be supplied as true to force the |
d67eb5f4 Z |
5813 | loop body to be enclosed in its own scope. |
5814 | ||
5815 | =cut | |
5816 | */ | |
5817 | ||
79072805 | 5818 | OP * |
94bf0465 Z |
5819 | Perl_newWHILEOP(pTHX_ I32 flags, I32 debuggable, LOOP *loop, |
5820 | OP *expr, OP *block, OP *cont, I32 has_my) | |
79072805 | 5821 | { |
27da23d5 | 5822 | dVAR; |
79072805 | 5823 | OP *redo; |
c445ea15 | 5824 | OP *next = NULL; |
79072805 | 5825 | OP *listop; |
11343788 | 5826 | OP *o; |
1ba6ee2b | 5827 | U8 loopflags = 0; |
46c461b5 AL |
5828 | |
5829 | PERL_UNUSED_ARG(debuggable); | |
79072805 | 5830 | |
2d03de9c | 5831 | if (expr) { |
114c60ec BG |
5832 | if (expr->op_type == OP_READLINE |
5833 | || expr->op_type == OP_READDIR | |
5834 | || expr->op_type == OP_GLOB | |
8ae39f60 | 5835 | || expr->op_type == OP_EACH || expr->op_type == OP_AEACH |
2d03de9c AL |
5836 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB)) { |
5837 | expr = newUNOP(OP_DEFINED, 0, | |
5838 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); | |
5839 | } else if (expr->op_flags & OPf_KIDS) { | |
5840 | const OP * const k1 = ((UNOP*)expr)->op_first; | |
5841 | const OP * const k2 = (k1) ? k1->op_sibling : NULL; | |
5842 | switch (expr->op_type) { | |
5843 | case OP_NULL: | |
114c60ec | 5844 | if (k2 && (k2->op_type == OP_READLINE || k2->op_type == OP_READDIR) |
2d03de9c AL |
5845 | && (k2->op_flags & OPf_STACKED) |
5846 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) | |
5847 | expr = newUNOP(OP_DEFINED, 0, expr); | |
5848 | break; | |
55d729e4 | 5849 | |
2d03de9c | 5850 | case OP_SASSIGN: |
72c8de1a | 5851 | if (k1 && (k1->op_type == OP_READDIR |
2d03de9c AL |
5852 | || k1->op_type == OP_GLOB |
5853 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) | |
459b64da HY |
5854 | || k1->op_type == OP_EACH |
5855 | || k1->op_type == OP_AEACH)) | |
2d03de9c AL |
5856 | expr = newUNOP(OP_DEFINED, 0, expr); |
5857 | break; | |
5858 | } | |
55d729e4 | 5859 | } |
748a9306 | 5860 | } |
79072805 LW |
5861 | |
5862 | if (!block) | |
5863 | block = newOP(OP_NULL, 0); | |
a034e688 | 5864 | else if (cont || has_my) { |
3ad73efd | 5865 | block = op_scope(block); |
87246558 | 5866 | } |
79072805 | 5867 | |
1ba6ee2b | 5868 | if (cont) { |
79072805 | 5869 | next = LINKLIST(cont); |
1ba6ee2b | 5870 | } |
fb73857a | 5871 | if (expr) { |
551405c4 | 5872 | OP * const unstack = newOP(OP_UNSTACK, 0); |
85538317 GS |
5873 | if (!next) |
5874 | next = unstack; | |
2fcb4757 | 5875 | cont = op_append_elem(OP_LINESEQ, cont, unstack); |
fb73857a | 5876 | } |
79072805 | 5877 | |
ce3e5c45 | 5878 | assert(block); |
2fcb4757 | 5879 | listop = op_append_list(OP_LINESEQ, block, cont); |
ce3e5c45 | 5880 | assert(listop); |
79072805 LW |
5881 | redo = LINKLIST(listop); |
5882 | ||
5883 | if (expr) { | |
883ffac3 CS |
5884 | scalar(listop); |
5885 | o = new_logop(OP_AND, 0, &expr, &listop); | |
11343788 | 5886 | if (o == expr && o->op_type == OP_CONST && !SvTRUE(cSVOPo->op_sv)) { |
85e6fe83 | 5887 | op_free(expr); /* oops, it's a while (0) */ |
463ee0b2 | 5888 | op_free((OP*)loop); |
5f66b61c | 5889 | return NULL; /* listop already freed by new_logop */ |
463ee0b2 | 5890 | } |
883ffac3 | 5891 | if (listop) |
497b47a8 | 5892 | ((LISTOP*)listop)->op_last->op_next = |
883ffac3 | 5893 | (o == listop ? redo : LINKLIST(o)); |
79072805 LW |
5894 | } |
5895 | else | |
11343788 | 5896 | o = listop; |
79072805 LW |
5897 | |
5898 | if (!loop) { | |
b7dc083c | 5899 | NewOp(1101,loop,1,LOOP); |
79072805 | 5900 | loop->op_type = OP_ENTERLOOP; |
22c35a8c | 5901 | loop->op_ppaddr = PL_ppaddr[OP_ENTERLOOP]; |
79072805 LW |
5902 | loop->op_private = 0; |
5903 | loop->op_next = (OP*)loop; | |
5904 | } | |
5905 | ||
11343788 | 5906 | o = newBINOP(OP_LEAVELOOP, 0, (OP*)loop, o); |
79072805 LW |
5907 | |
5908 | loop->op_redoop = redo; | |
11343788 | 5909 | loop->op_lastop = o; |
1ba6ee2b | 5910 | o->op_private |= loopflags; |
79072805 LW |
5911 | |
5912 | if (next) | |
5913 | loop->op_nextop = next; | |
5914 | else | |
11343788 | 5915 | loop->op_nextop = o; |
79072805 | 5916 | |
11343788 MB |
5917 | o->op_flags |= flags; |
5918 | o->op_private |= (flags >> 8); | |
5919 | return o; | |
79072805 LW |
5920 | } |
5921 | ||
d67eb5f4 | 5922 | /* |
94bf0465 | 5923 | =for apidoc Am|OP *|newFOROP|I32 flags|OP *sv|OP *expr|OP *block|OP *cont |
d67eb5f4 Z |
5924 | |
5925 | Constructs, checks, and returns an op tree expressing a C<foreach> | |
5926 | loop (iteration through a list of values). This is a heavyweight loop, | |
5927 | with structure that allows exiting the loop by C<last> and suchlike. | |
5928 | ||
5929 | I<sv> optionally supplies the variable that will be aliased to each | |
5930 | item in turn; if null, it defaults to C<$_> (either lexical or global). | |
5931 | I<expr> supplies the list of values to iterate over. I<block> supplies | |
5932 | the main body of the loop, and I<cont> optionally supplies a C<continue> | |
5933 | block that operates as a second half of the body. All of these optree | |
5934 | inputs are consumed by this function and become part of the constructed | |
5935 | op tree. | |
5936 | ||
5937 | I<flags> gives the eight bits of C<op_flags> for the C<leaveloop> | |
5938 | op and, shifted up eight bits, the eight bits of C<op_private> for | |
5939 | the C<leaveloop> op, except that (in both cases) some bits will be set | |
94bf0465 | 5940 | automatically. |
d67eb5f4 Z |
5941 | |
5942 | =cut | |
5943 | */ | |
5944 | ||
79072805 | 5945 | OP * |
94bf0465 | 5946 | Perl_newFOROP(pTHX_ I32 flags, OP *sv, OP *expr, OP *block, OP *cont) |
79072805 | 5947 | { |
27da23d5 | 5948 | dVAR; |
79072805 | 5949 | LOOP *loop; |
fb73857a | 5950 | OP *wop; |
4bbc6d12 | 5951 | PADOFFSET padoff = 0; |
4633a7c4 | 5952 | I32 iterflags = 0; |
241416b8 | 5953 | I32 iterpflags = 0; |
d4c19fe8 | 5954 | OP *madsv = NULL; |
79072805 | 5955 | |
7918f24d NC |
5956 | PERL_ARGS_ASSERT_NEWFOROP; |
5957 | ||
79072805 | 5958 | if (sv) { |
85e6fe83 | 5959 | if (sv->op_type == OP_RV2SV) { /* symbol table variable */ |
241416b8 | 5960 | iterpflags = sv->op_private & OPpOUR_INTRO; /* for our $x () */ |
748a9306 | 5961 | sv->op_type = OP_RV2GV; |
22c35a8c | 5962 | sv->op_ppaddr = PL_ppaddr[OP_RV2GV]; |
0be9a6bb RH |
5963 | |
5964 | /* The op_type check is needed to prevent a possible segfault | |
5965 | * if the loop variable is undeclared and 'strict vars' is in | |
5966 | * effect. This is illegal but is nonetheless parsed, so we | |
5967 | * may reach this point with an OP_CONST where we're expecting | |
5968 | * an OP_GV. | |
5969 | */ | |
5970 | if (cUNOPx(sv)->op_first->op_type == OP_GV | |
5971 | && cGVOPx_gv(cUNOPx(sv)->op_first) == PL_defgv) | |
0d863452 | 5972 | iterpflags |= OPpITER_DEF; |
79072805 | 5973 | } |
85e6fe83 | 5974 | else if (sv->op_type == OP_PADSV) { /* private variable */ |
241416b8 | 5975 | iterpflags = sv->op_private & OPpLVAL_INTRO; /* for my $x () */ |
85e6fe83 | 5976 | padoff = sv->op_targ; |
eb8433b7 NC |
5977 | if (PL_madskills) |
5978 | madsv = sv; | |
5979 | else { | |
5980 | sv->op_targ = 0; | |
5981 | op_free(sv); | |
5982 | } | |
5f66b61c | 5983 | sv = NULL; |
85e6fe83 | 5984 | } |
79072805 | 5985 | else |
cea2e8a9 | 5986 | Perl_croak(aTHX_ "Can't use %s for loop variable", PL_op_desc[sv->op_type]); |
f8503592 NC |
5987 | if (padoff) { |
5988 | SV *const namesv = PAD_COMPNAME_SV(padoff); | |
5989 | STRLEN len; | |
5990 | const char *const name = SvPV_const(namesv, len); | |
5991 | ||
5992 | if (len == 2 && name[0] == '$' && name[1] == '_') | |
5993 | iterpflags |= OPpITER_DEF; | |
5994 | } | |
79072805 LW |
5995 | } |
5996 | else { | |
cc76b5cc | 5997 | const PADOFFSET offset = pad_findmy_pvs("$_", 0); |
00b1698f | 5998 | if (offset == NOT_IN_PAD || PAD_COMPNAME_FLAGS_isOUR(offset)) { |
aabe9514 RGS |
5999 | sv = newGVOP(OP_GV, 0, PL_defgv); |
6000 | } | |
6001 | else { | |
6002 | padoff = offset; | |
aabe9514 | 6003 | } |
0d863452 | 6004 | iterpflags |= OPpITER_DEF; |
79072805 | 6005 | } |
5f05dabc | 6006 | if (expr->op_type == OP_RV2AV || expr->op_type == OP_PADAV) { |
3ad73efd | 6007 | expr = op_lvalue(force_list(scalar(ref(expr, OP_ITER))), OP_GREPSTART); |
4633a7c4 LW |
6008 | iterflags |= OPf_STACKED; |
6009 | } | |
89ea2908 GA |
6010 | else if (expr->op_type == OP_NULL && |
6011 | (expr->op_flags & OPf_KIDS) && | |
6012 | ((BINOP*)expr)->op_first->op_type == OP_FLOP) | |
6013 | { | |
6014 | /* Basically turn for($x..$y) into the same as for($x,$y), but we | |
6015 | * set the STACKED flag to indicate that these values are to be | |
6016 | * treated as min/max values by 'pp_iterinit'. | |
6017 | */ | |
d4c19fe8 | 6018 | const UNOP* const flip = (UNOP*)((UNOP*)((BINOP*)expr)->op_first)->op_first; |
551405c4 | 6019 | LOGOP* const range = (LOGOP*) flip->op_first; |
66a1b24b AL |
6020 | OP* const left = range->op_first; |
6021 | OP* const right = left->op_sibling; | |
5152d7c7 | 6022 | LISTOP* listop; |
89ea2908 GA |
6023 | |
6024 | range->op_flags &= ~OPf_KIDS; | |
5f66b61c | 6025 | range->op_first = NULL; |
89ea2908 | 6026 | |
5152d7c7 | 6027 | listop = (LISTOP*)newLISTOP(OP_LIST, 0, left, right); |
1a67a97c SM |
6028 | listop->op_first->op_next = range->op_next; |
6029 | left->op_next = range->op_other; | |
5152d7c7 GS |
6030 | right->op_next = (OP*)listop; |
6031 | listop->op_next = listop->op_first; | |
89ea2908 | 6032 | |
eb8433b7 NC |
6033 | #ifdef PERL_MAD |
6034 | op_getmad(expr,(OP*)listop,'O'); | |
6035 | #else | |
89ea2908 | 6036 | op_free(expr); |
eb8433b7 | 6037 | #endif |
5152d7c7 | 6038 | expr = (OP*)(listop); |
93c66552 | 6039 | op_null(expr); |
89ea2908 GA |
6040 | iterflags |= OPf_STACKED; |
6041 | } | |
6042 | else { | |
3ad73efd | 6043 | expr = op_lvalue(force_list(expr), OP_GREPSTART); |
89ea2908 GA |
6044 | } |
6045 | ||
4633a7c4 | 6046 | loop = (LOOP*)list(convert(OP_ENTERITER, iterflags, |
2fcb4757 | 6047 | op_append_elem(OP_LIST, expr, scalar(sv)))); |
85e6fe83 | 6048 | assert(!loop->op_next); |
241416b8 | 6049 | /* for my $x () sets OPpLVAL_INTRO; |
14f338dc | 6050 | * for our $x () sets OPpOUR_INTRO */ |
c5661c80 | 6051 | loop->op_private = (U8)iterpflags; |
b7dc083c | 6052 | #ifdef PL_OP_SLAB_ALLOC |
155aba94 GS |
6053 | { |
6054 | LOOP *tmp; | |
6055 | NewOp(1234,tmp,1,LOOP); | |
bd5f3bc4 | 6056 | Copy(loop,tmp,1,LISTOP); |
bfafaa29 | 6057 | S_op_destroy(aTHX_ (OP*)loop); |
155aba94 GS |
6058 | loop = tmp; |
6059 | } | |
b7dc083c | 6060 | #else |
10edeb5d | 6061 | loop = (LOOP*)PerlMemShared_realloc(loop, sizeof(LOOP)); |
1c846c1f | 6062 | #endif |
85e6fe83 | 6063 | loop->op_targ = padoff; |
94bf0465 | 6064 | wop = newWHILEOP(flags, 1, loop, newOP(OP_ITER, 0), block, cont, 0); |
eb8433b7 NC |
6065 | if (madsv) |
6066 | op_getmad(madsv, (OP*)loop, 'v'); | |
eae48c89 | 6067 | return wop; |
79072805 LW |
6068 | } |
6069 | ||
d67eb5f4 Z |
6070 | /* |
6071 | =for apidoc Am|OP *|newLOOPEX|I32 type|OP *label | |
6072 | ||
6073 | Constructs, checks, and returns a loop-exiting op (such as C<goto> | |
6074 | or C<last>). I<type> is the opcode. I<label> supplies the parameter | |
6075 | determining the target of the op; it is consumed by this function and | |
6076 | become part of the constructed op tree. | |
6077 | ||
6078 | =cut | |
6079 | */ | |
6080 | ||
8990e307 | 6081 | OP* |
864dbfa3 | 6082 | Perl_newLOOPEX(pTHX_ I32 type, OP *label) |
8990e307 | 6083 | { |
97aff369 | 6084 | dVAR; |
11343788 | 6085 | OP *o; |
2d8e6c8d | 6086 | |
7918f24d NC |
6087 | PERL_ARGS_ASSERT_NEWLOOPEX; |
6088 | ||
e69777c1 GG |
6089 | assert((PL_opargs[type] & OA_CLASS_MASK) == OA_LOOPEXOP); |
6090 | ||
3532f34a | 6091 | if (type != OP_GOTO) { |
cdaebead MB |
6092 | /* "last()" means "last" */ |
6093 | if (label->op_type == OP_STUB && (label->op_flags & OPf_PARENS)) | |
6094 | o = newOP(type, OPf_SPECIAL); | |
6095 | else { | |
3532f34a | 6096 | const_label: |
5db1eb8d BF |
6097 | o = newPVOP(type, |
6098 | label->op_type == OP_CONST | |
6099 | ? SvUTF8(((SVOP*)label)->op_sv) | |
6100 | : 0, | |
6101 | savesharedpv(label->op_type == OP_CONST | |
6102 | ? SvPV_nolen_const(((SVOP*)label)->op_sv) | |
6103 | : "")); | |
cdaebead | 6104 | } |
eb8433b7 NC |
6105 | #ifdef PERL_MAD |
6106 | op_getmad(label,o,'L'); | |
6107 | #else | |
8990e307 | 6108 | op_free(label); |
eb8433b7 | 6109 | #endif |
8990e307 LW |
6110 | } |
6111 | else { | |
e3aba57a RGS |
6112 | /* Check whether it's going to be a goto &function */ |
6113 | if (label->op_type == OP_ENTERSUB | |
6114 | && !(label->op_flags & OPf_STACKED)) | |
3ad73efd | 6115 | label = newUNOP(OP_REFGEN, 0, op_lvalue(label, OP_REFGEN)); |
3532f34a FC |
6116 | else if (label->op_type == OP_CONST) { |
6117 | SV * const sv = ((SVOP *)label)->op_sv; | |
6118 | STRLEN l; | |
6119 | const char *s = SvPV_const(sv,l); | |
6120 | if (l == strlen(s)) goto const_label; | |
6121 | } | |
11343788 | 6122 | o = newUNOP(type, OPf_STACKED, label); |
8990e307 | 6123 | } |
3280af22 | 6124 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 6125 | return o; |
8990e307 LW |
6126 | } |
6127 | ||
0d863452 RH |
6128 | /* if the condition is a literal array or hash |
6129 | (or @{ ... } etc), make a reference to it. | |
6130 | */ | |
6131 | STATIC OP * | |
6132 | S_ref_array_or_hash(pTHX_ OP *cond) | |
6133 | { | |
6134 | if (cond | |
6135 | && (cond->op_type == OP_RV2AV | |
6136 | || cond->op_type == OP_PADAV | |
6137 | || cond->op_type == OP_RV2HV | |
6138 | || cond->op_type == OP_PADHV)) | |
6139 | ||
3ad73efd | 6140 | return newUNOP(OP_REFGEN, 0, op_lvalue(cond, OP_REFGEN)); |
0d863452 | 6141 | |
329a333e DL |
6142 | else if(cond |
6143 | && (cond->op_type == OP_ASLICE | |
6144 | || cond->op_type == OP_HSLICE)) { | |
6145 | ||
6146 | /* anonlist now needs a list from this op, was previously used in | |
6147 | * scalar context */ | |
6148 | cond->op_flags |= ~(OPf_WANT_SCALAR | OPf_REF); | |
6149 | cond->op_flags |= OPf_WANT_LIST; | |
6150 | ||
3ad73efd | 6151 | return newANONLIST(op_lvalue(cond, OP_ANONLIST)); |
329a333e DL |
6152 | } |
6153 | ||
0d863452 RH |
6154 | else |
6155 | return cond; | |
6156 | } | |
6157 | ||
6158 | /* These construct the optree fragments representing given() | |
6159 | and when() blocks. | |
6160 | ||
6161 | entergiven and enterwhen are LOGOPs; the op_other pointer | |
6162 | points up to the associated leave op. We need this so we | |
6163 | can put it in the context and make break/continue work. | |
6164 | (Also, of course, pp_enterwhen will jump straight to | |
6165 | op_other if the match fails.) | |
6166 | */ | |
6167 | ||
4136a0f7 | 6168 | STATIC OP * |
0d863452 RH |
6169 | S_newGIVWHENOP(pTHX_ OP *cond, OP *block, |
6170 | I32 enter_opcode, I32 leave_opcode, | |
6171 | PADOFFSET entertarg) | |
6172 | { | |
97aff369 | 6173 | dVAR; |
0d863452 RH |
6174 | LOGOP *enterop; |
6175 | OP *o; | |
6176 | ||
7918f24d NC |
6177 | PERL_ARGS_ASSERT_NEWGIVWHENOP; |
6178 | ||
0d863452 | 6179 | NewOp(1101, enterop, 1, LOGOP); |
61a59f30 | 6180 | enterop->op_type = (Optype)enter_opcode; |
0d863452 RH |
6181 | enterop->op_ppaddr = PL_ppaddr[enter_opcode]; |
6182 | enterop->op_flags = (U8) OPf_KIDS; | |
6183 | enterop->op_targ = ((entertarg == NOT_IN_PAD) ? 0 : entertarg); | |
6184 | enterop->op_private = 0; | |
6185 | ||
6186 | o = newUNOP(leave_opcode, 0, (OP *) enterop); | |
6187 | ||
6188 | if (cond) { | |
6189 | enterop->op_first = scalar(cond); | |
6190 | cond->op_sibling = block; | |
6191 | ||
6192 | o->op_next = LINKLIST(cond); | |
6193 | cond->op_next = (OP *) enterop; | |
6194 | } | |
6195 | else { | |
6196 | /* This is a default {} block */ | |
6197 | enterop->op_first = block; | |
6198 | enterop->op_flags |= OPf_SPECIAL; | |
fc7debfb | 6199 | o ->op_flags |= OPf_SPECIAL; |
0d863452 RH |
6200 | |
6201 | o->op_next = (OP *) enterop; | |
6202 | } | |
6203 | ||
6204 | CHECKOP(enter_opcode, enterop); /* Currently does nothing, since | |
6205 | entergiven and enterwhen both | |
6206 | use ck_null() */ | |
6207 | ||
6208 | enterop->op_next = LINKLIST(block); | |
6209 | block->op_next = enterop->op_other = o; | |
6210 | ||
6211 | return o; | |
6212 | } | |
6213 | ||
6214 | /* Does this look like a boolean operation? For these purposes | |
6215 | a boolean operation is: | |
6216 | - a subroutine call [*] | |
6217 | - a logical connective | |
6218 | - a comparison operator | |
6219 | - a filetest operator, with the exception of -s -M -A -C | |
6220 | - defined(), exists() or eof() | |
6221 | - /$re/ or $foo =~ /$re/ | |
6222 | ||
6223 | [*] possibly surprising | |
6224 | */ | |
4136a0f7 | 6225 | STATIC bool |
ef519e13 | 6226 | S_looks_like_bool(pTHX_ const OP *o) |
0d863452 | 6227 | { |
97aff369 | 6228 | dVAR; |
7918f24d NC |
6229 | |
6230 | PERL_ARGS_ASSERT_LOOKS_LIKE_BOOL; | |
6231 | ||
0d863452 RH |
6232 | switch(o->op_type) { |
6233 | case OP_OR: | |
f92e1a16 | 6234 | case OP_DOR: |
0d863452 RH |
6235 | return looks_like_bool(cLOGOPo->op_first); |
6236 | ||
6237 | case OP_AND: | |
6238 | return ( | |
6239 | looks_like_bool(cLOGOPo->op_first) | |
6240 | && looks_like_bool(cLOGOPo->op_first->op_sibling)); | |
6241 | ||
1e1d4b91 | 6242 | case OP_NULL: |
08fe1c44 | 6243 | case OP_SCALAR: |
1e1d4b91 JJ |
6244 | return ( |
6245 | o->op_flags & OPf_KIDS | |
6246 | && looks_like_bool(cUNOPo->op_first)); | |
6247 | ||
0d863452 RH |
6248 | case OP_ENTERSUB: |
6249 | ||
6250 | case OP_NOT: case OP_XOR: | |
0d863452 RH |
6251 | |
6252 | case OP_EQ: case OP_NE: case OP_LT: | |
6253 | case OP_GT: case OP_LE: case OP_GE: | |
6254 | ||
6255 | case OP_I_EQ: case OP_I_NE: case OP_I_LT: | |
6256 | case OP_I_GT: case OP_I_LE: case OP_I_GE: | |
6257 | ||
6258 | case OP_SEQ: case OP_SNE: case OP_SLT: | |
6259 | case OP_SGT: case OP_SLE: case OP_SGE: | |
6260 | ||
6261 | case OP_SMARTMATCH: | |
6262 | ||
6263 | case OP_FTRREAD: case OP_FTRWRITE: case OP_FTREXEC: | |
6264 | case OP_FTEREAD: case OP_FTEWRITE: case OP_FTEEXEC: | |
6265 | case OP_FTIS: case OP_FTEOWNED: case OP_FTROWNED: | |
6266 | case OP_FTZERO: case OP_FTSOCK: case OP_FTCHR: | |
6267 | case OP_FTBLK: case OP_FTFILE: case OP_FTDIR: | |
6268 | case OP_FTPIPE: case OP_FTLINK: case OP_FTSUID: | |
6269 | case OP_FTSGID: case OP_FTSVTX: case OP_FTTTY: | |
6270 | case OP_FTTEXT: case OP_FTBINARY: | |
6271 | ||
6272 | case OP_DEFINED: case OP_EXISTS: | |
6273 | case OP_MATCH: case OP_EOF: | |
6274 | ||
f118ea0d RGS |
6275 | case OP_FLOP: |
6276 | ||
0d863452 RH |
6277 | return TRUE; |
6278 | ||
6279 | case OP_CONST: | |
6280 | /* Detect comparisons that have been optimized away */ | |
6281 | if (cSVOPo->op_sv == &PL_sv_yes | |
6282 | || cSVOPo->op_sv == &PL_sv_no) | |
6283 | ||
6284 | return TRUE; | |
6e03d743 RGS |
6285 | else |
6286 | return FALSE; | |
6e03d743 | 6287 | |
0d863452 RH |
6288 | /* FALL THROUGH */ |
6289 | default: | |
6290 | return FALSE; | |
6291 | } | |
6292 | } | |
6293 | ||
d67eb5f4 Z |
6294 | /* |
6295 | =for apidoc Am|OP *|newGIVENOP|OP *cond|OP *block|PADOFFSET defsv_off | |
6296 | ||
6297 | Constructs, checks, and returns an op tree expressing a C<given> block. | |
6298 | I<cond> supplies the expression that will be locally assigned to a lexical | |
6299 | variable, and I<block> supplies the body of the C<given> construct; they | |
6300 | are consumed by this function and become part of the constructed op tree. | |
6301 | I<defsv_off> is the pad offset of the scalar lexical variable that will | |
6302 | be affected. | |
6303 | ||
6304 | =cut | |
6305 | */ | |
6306 | ||
0d863452 RH |
6307 | OP * |
6308 | Perl_newGIVENOP(pTHX_ OP *cond, OP *block, PADOFFSET defsv_off) | |
6309 | { | |
97aff369 | 6310 | dVAR; |
7918f24d | 6311 | PERL_ARGS_ASSERT_NEWGIVENOP; |
0d863452 RH |
6312 | return newGIVWHENOP( |
6313 | ref_array_or_hash(cond), | |
6314 | block, | |
6315 | OP_ENTERGIVEN, OP_LEAVEGIVEN, | |
6316 | defsv_off); | |
6317 | } | |
6318 | ||
d67eb5f4 Z |
6319 | /* |
6320 | =for apidoc Am|OP *|newWHENOP|OP *cond|OP *block | |
6321 | ||
6322 | Constructs, checks, and returns an op tree expressing a C<when> block. | |
6323 | I<cond> supplies the test expression, and I<block> supplies the block | |
6324 | that will be executed if the test evaluates to true; they are consumed | |
6325 | by this function and become part of the constructed op tree. I<cond> | |
6326 | will be interpreted DWIMically, often as a comparison against C<$_>, | |
6327 | and may be null to generate a C<default> block. | |
6328 | ||
6329 | =cut | |
6330 | */ | |
6331 | ||
0d863452 RH |
6332 | OP * |
6333 | Perl_newWHENOP(pTHX_ OP *cond, OP *block) | |
6334 | { | |
ef519e13 | 6335 | const bool cond_llb = (!cond || looks_like_bool(cond)); |
0d863452 RH |
6336 | OP *cond_op; |
6337 | ||
7918f24d NC |
6338 | PERL_ARGS_ASSERT_NEWWHENOP; |
6339 | ||
0d863452 RH |
6340 | if (cond_llb) |
6341 | cond_op = cond; | |
6342 | else { | |
6343 | cond_op = newBINOP(OP_SMARTMATCH, OPf_SPECIAL, | |
6344 | newDEFSVOP(), | |
6345 | scalar(ref_array_or_hash(cond))); | |
6346 | } | |
6347 | ||
c08f093b | 6348 | return newGIVWHENOP(cond_op, block, OP_ENTERWHEN, OP_LEAVEWHEN, 0); |
0d863452 RH |
6349 | } |
6350 | ||
3fe9a6f1 | 6351 | void |
dab1c735 BF |
6352 | Perl_cv_ckproto_len_flags(pTHX_ const CV *cv, const GV *gv, const char *p, |
6353 | const STRLEN len, const U32 flags) | |
cbf82dd0 | 6354 | { |
8fa6a409 FC |
6355 | const char * const cvp = CvPROTO(cv); |
6356 | const STRLEN clen = CvPROTOLEN(cv); | |
6357 | ||
dab1c735 | 6358 | PERL_ARGS_ASSERT_CV_CKPROTO_LEN_FLAGS; |
8fa6a409 FC |
6359 | |
6360 | if (((!p != !cvp) /* One has prototype, one has not. */ | |
6361 | || (p && ( | |
6362 | (flags & SVf_UTF8) == SvUTF8(cv) | |
6363 | ? len != clen || memNE(cvp, p, len) | |
6364 | : flags & SVf_UTF8 | |
6365 | ? bytes_cmp_utf8((const U8 *)cvp, clen, | |
6366 | (const U8 *)p, len) | |
6367 | : bytes_cmp_utf8((const U8 *)p, len, | |
6368 | (const U8 *)cvp, clen) | |
6369 | ) | |
6370 | ) | |
6371 | ) | |
cbf82dd0 | 6372 | && ckWARN_d(WARN_PROTOTYPE)) { |
2d03de9c | 6373 | SV* const msg = sv_newmortal(); |
a0714e2c | 6374 | SV* name = NULL; |
3fe9a6f1 | 6375 | |
6376 | if (gv) | |
bd61b366 | 6377 | gv_efullname3(name = sv_newmortal(), gv, NULL); |
6502358f | 6378 | sv_setpvs(msg, "Prototype mismatch:"); |
46fc3d4c | 6379 | if (name) |
be2597df | 6380 | Perl_sv_catpvf(aTHX_ msg, " sub %"SVf, SVfARG(name)); |
3fe9a6f1 | 6381 | if (SvPOK(cv)) |
8fa6a409 FC |
6382 | Perl_sv_catpvf(aTHX_ msg, " (%"SVf")", |
6383 | SVfARG(newSVpvn_flags(cvp,clen, SvUTF8(cv)|SVs_TEMP)) | |
6384 | ); | |
ebe643b9 | 6385 | else |
396482e1 GA |
6386 | sv_catpvs(msg, ": none"); |
6387 | sv_catpvs(msg, " vs "); | |
46fc3d4c | 6388 | if (p) |
dab1c735 | 6389 | Perl_sv_catpvf(aTHX_ msg, "(%"SVf")", SVfARG(newSVpvn_flags(p, len, flags | SVs_TEMP))); |
46fc3d4c | 6390 | else |
396482e1 | 6391 | sv_catpvs(msg, "none"); |
be2597df | 6392 | Perl_warner(aTHX_ packWARN(WARN_PROTOTYPE), "%"SVf, SVfARG(msg)); |
3fe9a6f1 | 6393 | } |
6394 | } | |
6395 | ||
35f1c1c7 SB |
6396 | static void const_sv_xsub(pTHX_ CV* cv); |
6397 | ||
beab0874 | 6398 | /* |
ccfc67b7 JH |
6399 | |
6400 | =head1 Optree Manipulation Functions | |
6401 | ||
beab0874 JT |
6402 | =for apidoc cv_const_sv |
6403 | ||
6404 | If C<cv> is a constant sub eligible for inlining. returns the constant | |
6405 | value returned by the sub. Otherwise, returns NULL. | |
6406 | ||
6407 | Constant subs can be created with C<newCONSTSUB> or as described in | |
6408 | L<perlsub/"Constant Functions">. | |
6409 | ||
6410 | =cut | |
6411 | */ | |
760ac839 | 6412 | SV * |
d45f5b30 | 6413 | Perl_cv_const_sv(pTHX_ const CV *const cv) |
760ac839 | 6414 | { |
96a5add6 | 6415 | PERL_UNUSED_CONTEXT; |
5069cc75 NC |
6416 | if (!cv) |
6417 | return NULL; | |
6418 | if (!(SvTYPE(cv) == SVt_PVCV || SvTYPE(cv) == SVt_PVFM)) | |
6419 | return NULL; | |
ad64d0ec | 6420 | return CvCONST(cv) ? MUTABLE_SV(CvXSUBANY(cv).any_ptr) : NULL; |
fe5e78ed | 6421 | } |
760ac839 | 6422 | |
b5c19bd7 DM |
6423 | /* op_const_sv: examine an optree to determine whether it's in-lineable. |
6424 | * Can be called in 3 ways: | |
6425 | * | |
6426 | * !cv | |
6427 | * look for a single OP_CONST with attached value: return the value | |
6428 | * | |
6429 | * cv && CvCLONE(cv) && !CvCONST(cv) | |
6430 | * | |
6431 | * examine the clone prototype, and if contains only a single | |
6432 | * OP_CONST referencing a pad const, or a single PADSV referencing | |
6433 | * an outer lexical, return a non-zero value to indicate the CV is | |
6434 | * a candidate for "constizing" at clone time | |
6435 | * | |
6436 | * cv && CvCONST(cv) | |
6437 | * | |
6438 | * We have just cloned an anon prototype that was marked as a const | |
486ec47a | 6439 | * candidate. Try to grab the current value, and in the case of |
b5c19bd7 DM |
6440 | * PADSV, ignore it if it has multiple references. Return the value. |
6441 | */ | |
6442 | ||
fe5e78ed | 6443 | SV * |
6867be6d | 6444 | Perl_op_const_sv(pTHX_ const OP *o, CV *cv) |
fe5e78ed | 6445 | { |
97aff369 | 6446 | dVAR; |
a0714e2c | 6447 | SV *sv = NULL; |
fe5e78ed | 6448 | |
c631f32b GG |
6449 | if (PL_madskills) |
6450 | return NULL; | |
6451 | ||
0f79a09d | 6452 | if (!o) |
a0714e2c | 6453 | return NULL; |
1c846c1f NIS |
6454 | |
6455 | if (o->op_type == OP_LINESEQ && cLISTOPo->op_first) | |
fe5e78ed GS |
6456 | o = cLISTOPo->op_first->op_sibling; |
6457 | ||
6458 | for (; o; o = o->op_next) { | |
890ce7af | 6459 | const OPCODE type = o->op_type; |
fe5e78ed | 6460 | |
1c846c1f | 6461 | if (sv && o->op_next == o) |
fe5e78ed | 6462 | return sv; |
e576b457 | 6463 | if (o->op_next != o) { |
dbe92b04 FC |
6464 | if (type == OP_NEXTSTATE |
6465 | || (type == OP_NULL && !(o->op_flags & OPf_KIDS)) | |
6466 | || type == OP_PUSHMARK) | |
e576b457 JT |
6467 | continue; |
6468 | if (type == OP_DBSTATE) | |
6469 | continue; | |
6470 | } | |
54310121 | 6471 | if (type == OP_LEAVESUB || type == OP_RETURN) |
6472 | break; | |
6473 | if (sv) | |
a0714e2c | 6474 | return NULL; |
7766f137 | 6475 | if (type == OP_CONST && cSVOPo->op_sv) |
5dc0d613 | 6476 | sv = cSVOPo->op_sv; |
b5c19bd7 | 6477 | else if (cv && type == OP_CONST) { |
dd2155a4 | 6478 | sv = PAD_BASE_SV(CvPADLIST(cv), o->op_targ); |
beab0874 | 6479 | if (!sv) |
a0714e2c | 6480 | return NULL; |
b5c19bd7 DM |
6481 | } |
6482 | else if (cv && type == OP_PADSV) { | |
6483 | if (CvCONST(cv)) { /* newly cloned anon */ | |
6484 | sv = PAD_BASE_SV(CvPADLIST(cv), o->op_targ); | |
6485 | /* the candidate should have 1 ref from this pad and 1 ref | |
6486 | * from the parent */ | |
6487 | if (!sv || SvREFCNT(sv) != 2) | |
a0714e2c | 6488 | return NULL; |
beab0874 | 6489 | sv = newSVsv(sv); |
b5c19bd7 DM |
6490 | SvREADONLY_on(sv); |
6491 | return sv; | |
6492 | } | |
6493 | else { | |
6494 | if (PAD_COMPNAME_FLAGS(o->op_targ) & SVf_FAKE) | |
6495 | sv = &PL_sv_undef; /* an arbitrary non-null value */ | |
beab0874 | 6496 | } |
760ac839 | 6497 | } |
b5c19bd7 | 6498 | else { |
a0714e2c | 6499 | return NULL; |
b5c19bd7 | 6500 | } |
760ac839 LW |
6501 | } |
6502 | return sv; | |
6503 | } | |
6504 | ||
eb8433b7 NC |
6505 | #ifdef PERL_MAD |
6506 | OP * | |
6507 | #else | |
09bef843 | 6508 | void |
eb8433b7 | 6509 | #endif |
09bef843 SB |
6510 | Perl_newMYSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, OP *block) |
6511 | { | |
99129197 NC |
6512 | #if 0 |
6513 | /* This would be the return value, but the return cannot be reached. */ | |
eb8433b7 NC |
6514 | OP* pegop = newOP(OP_NULL, 0); |
6515 | #endif | |
6516 | ||
46c461b5 AL |
6517 | PERL_UNUSED_ARG(floor); |
6518 | ||
09bef843 SB |
6519 | if (o) |
6520 | SAVEFREEOP(o); | |
6521 | if (proto) | |
6522 | SAVEFREEOP(proto); | |
6523 | if (attrs) | |
6524 | SAVEFREEOP(attrs); | |
6525 | if (block) | |
6526 | SAVEFREEOP(block); | |
6527 | Perl_croak(aTHX_ "\"my sub\" not yet implemented"); | |
eb8433b7 | 6528 | #ifdef PERL_MAD |
99129197 | 6529 | NORETURN_FUNCTION_END; |
eb8433b7 | 6530 | #endif |
09bef843 SB |
6531 | } |
6532 | ||
748a9306 | 6533 | CV * |
09bef843 SB |
6534 | Perl_newATTRSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, OP *block) |
6535 | { | |
7e68c38b FC |
6536 | return newATTRSUB_flags(floor, o, proto, attrs, block, 0); |
6537 | } | |
6538 | ||
6539 | CV * | |
6540 | Perl_newATTRSUB_flags(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, | |
6541 | OP *block, U32 flags) | |
6542 | { | |
27da23d5 | 6543 | dVAR; |
83ee9e09 | 6544 | GV *gv; |
5c144d81 | 6545 | const char *ps; |
52a9a866 | 6546 | STRLEN ps_len = 0; /* init it to avoid false uninit warning from icc */ |
e0260a5b | 6547 | U32 ps_utf8 = 0; |
c445ea15 | 6548 | register CV *cv = NULL; |
beab0874 | 6549 | SV *const_sv; |
b48b272a NC |
6550 | /* If the subroutine has no body, no attributes, and no builtin attributes |
6551 | then it's just a sub declaration, and we may be able to get away with | |
6552 | storing with a placeholder scalar in the symbol table, rather than a | |
6553 | full GV and CV. If anything is present then it will take a full CV to | |
6554 | store it. */ | |
6555 | const I32 gv_fetch_flags | |
eb8433b7 NC |
6556 | = (block || attrs || (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS) |
6557 | || PL_madskills) | |
b48b272a | 6558 | ? GV_ADDMULTI : GV_ADDMULTI | GV_NOINIT; |
6e948d54 | 6559 | STRLEN namlen = 0; |
7e68c38b FC |
6560 | const bool o_is_gv = flags & 1; |
6561 | const char * const name = | |
6562 | o ? SvPV_const(o_is_gv ? (SV *)o : cSVOPo->op_sv, namlen) : NULL; | |
ed4a8a9b | 6563 | bool has_name; |
7e68c38b | 6564 | bool name_is_utf8 = o && !o_is_gv && SvUTF8(cSVOPo->op_sv); |
8e742a20 MHM |
6565 | |
6566 | if (proto) { | |
6567 | assert(proto->op_type == OP_CONST); | |
4ea561bc | 6568 | ps = SvPV_const(((SVOP*)proto)->op_sv, ps_len); |
e0260a5b | 6569 | ps_utf8 = SvUTF8(((SVOP*)proto)->op_sv); |
8e742a20 MHM |
6570 | } |
6571 | else | |
bd61b366 | 6572 | ps = NULL; |
8e742a20 | 6573 | |
7e68c38b FC |
6574 | if (o_is_gv) { |
6575 | gv = (GV*)o; | |
6576 | o = NULL; | |
6577 | has_name = TRUE; | |
6578 | } else if (name) { | |
6579 | gv = gv_fetchsv(cSVOPo->op_sv, gv_fetch_flags, SVt_PVCV); | |
ed4a8a9b NC |
6580 | has_name = TRUE; |
6581 | } else if (PERLDB_NAMEANON && CopLINE(PL_curcop)) { | |
aec46f14 | 6582 | SV * const sv = sv_newmortal(); |
c99da370 JH |
6583 | Perl_sv_setpvf(aTHX_ sv, "%s[%s:%"IVdf"]", |
6584 | PL_curstash ? "__ANON__" : "__ANON__::__ANON__", | |
83ee9e09 | 6585 | CopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); |
ed4a8a9b NC |
6586 | gv = gv_fetchsv(sv, gv_fetch_flags, SVt_PVCV); |
6587 | has_name = TRUE; | |
c1754fce NC |
6588 | } else if (PL_curstash) { |
6589 | gv = gv_fetchpvs("__ANON__", gv_fetch_flags, SVt_PVCV); | |
ed4a8a9b | 6590 | has_name = FALSE; |
c1754fce NC |
6591 | } else { |
6592 | gv = gv_fetchpvs("__ANON__::__ANON__", gv_fetch_flags, SVt_PVCV); | |
ed4a8a9b | 6593 | has_name = FALSE; |
c1754fce | 6594 | } |
83ee9e09 | 6595 | |
eb8433b7 NC |
6596 | if (!PL_madskills) { |
6597 | if (o) | |
6598 | SAVEFREEOP(o); | |
6599 | if (proto) | |
6600 | SAVEFREEOP(proto); | |
6601 | if (attrs) | |
6602 | SAVEFREEOP(attrs); | |
6603 | } | |
3fe9a6f1 | 6604 | |
09bef843 | 6605 | if (SvTYPE(gv) != SVt_PVGV) { /* Maybe prototype now, and had at |
55d729e4 GS |
6606 | maximum a prototype before. */ |
6607 | if (SvTYPE(gv) > SVt_NULL) { | |
dab1c735 | 6608 | cv_ckproto_len_flags((const CV *)gv, NULL, ps, ps_len, ps_utf8); |
55d729e4 | 6609 | } |
e0260a5b | 6610 | if (ps) { |
ad64d0ec | 6611 | sv_setpvn(MUTABLE_SV(gv), ps, ps_len); |
e0260a5b BF |
6612 | if ( ps_utf8 ) SvUTF8_on(MUTABLE_SV(gv)); |
6613 | } | |
55d729e4 | 6614 | else |
ad64d0ec | 6615 | sv_setiv(MUTABLE_SV(gv), -1); |
e1a479c5 | 6616 | |
3280af22 NIS |
6617 | SvREFCNT_dec(PL_compcv); |
6618 | cv = PL_compcv = NULL; | |
beab0874 | 6619 | goto done; |
55d729e4 GS |
6620 | } |
6621 | ||
601f1833 | 6622 | cv = (!name || GvCVGEN(gv)) ? NULL : GvCV(gv); |
beab0874 | 6623 | |
eb8433b7 NC |
6624 | if (!block || !ps || *ps || attrs |
6625 | || (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS) | |
6626 | #ifdef PERL_MAD | |
6627 | || block->op_type == OP_NULL | |
6628 | #endif | |
6629 | ) | |
a0714e2c | 6630 | const_sv = NULL; |
beab0874 | 6631 | else |
601f1833 | 6632 | const_sv = op_const_sv(block, NULL); |
beab0874 JT |
6633 | |
6634 | if (cv) { | |
6867be6d | 6635 | const bool exists = CvROOT(cv) || CvXSUB(cv); |
5bd07a3d | 6636 | |
60ed1d8c GS |
6637 | /* if the subroutine doesn't exist and wasn't pre-declared |
6638 | * with a prototype, assume it will be AUTOLOADed, | |
6639 | * skipping the prototype check | |
6640 | */ | |
6641 | if (exists || SvPOK(cv)) | |
dab1c735 | 6642 | cv_ckproto_len_flags(cv, gv, ps, ps_len, ps_utf8); |
68dc0745 | 6643 | /* already defined (or promised)? */ |
60ed1d8c | 6644 | if (exists || GvASSUMECV(gv)) { |
eb8433b7 NC |
6645 | if ((!block |
6646 | #ifdef PERL_MAD | |
6647 | || block->op_type == OP_NULL | |
6648 | #endif | |
fff96ff7 | 6649 | )) { |
d3cea301 SB |
6650 | if (CvFLAGS(PL_compcv)) { |
6651 | /* might have had built-in attrs applied */ | |
4dbb339a FC |
6652 | const bool pureperl = !CvISXSUB(cv) && CvROOT(cv); |
6653 | if (CvLVALUE(PL_compcv) && ! CvLVALUE(cv) && pureperl | |
6654 | && ckWARN(WARN_MISC)) | |
885ef6f5 | 6655 | Perl_warner(aTHX_ packWARN(WARN_MISC), "lvalue attribute ignored after the subroutine has been defined"); |
4dbb339a FC |
6656 | CvFLAGS(cv) |= |
6657 | (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS | |
6658 | & ~(CVf_LVALUE * pureperl)); | |
d3cea301 | 6659 | } |
fff96ff7 | 6660 | if (attrs) goto attrs; |
aa689395 | 6661 | /* just a "sub foo;" when &foo is already defined */ |
3280af22 | 6662 | SAVEFREESV(PL_compcv); |
aa689395 | 6663 | goto done; |
6664 | } | |
eb8433b7 NC |
6665 | if (block |
6666 | #ifdef PERL_MAD | |
6667 | && block->op_type != OP_NULL | |
6668 | #endif | |
6669 | ) { | |
156d738f FC |
6670 | const line_t oldline = CopLINE(PL_curcop); |
6671 | if (PL_parser && PL_parser->copline != NOLINE) | |
53a7735b | 6672 | CopLINE_set(PL_curcop, PL_parser->copline); |
156d738f FC |
6673 | report_redefined_cv(cSVOPo->op_sv, cv, &const_sv); |
6674 | CopLINE_set(PL_curcop, oldline); | |
eb8433b7 NC |
6675 | #ifdef PERL_MAD |
6676 | if (!PL_minus_c) /* keep old one around for madskills */ | |
6677 | #endif | |
6678 | { | |
6679 | /* (PL_madskills unset in used file.) */ | |
6680 | SvREFCNT_dec(cv); | |
6681 | } | |
601f1833 | 6682 | cv = NULL; |
79072805 | 6683 | } |
79072805 LW |
6684 | } |
6685 | } | |
beab0874 | 6686 | if (const_sv) { |
03d9f026 | 6687 | HV *stash; |
f84c484e | 6688 | SvREFCNT_inc_simple_void_NN(const_sv); |
beab0874 | 6689 | if (cv) { |
0768512c | 6690 | assert(!CvROOT(cv) && !CvCONST(cv)); |
ad64d0ec | 6691 | sv_setpvs(MUTABLE_SV(cv), ""); /* prototype is "" */ |
beab0874 JT |
6692 | CvXSUBANY(cv).any_ptr = const_sv; |
6693 | CvXSUB(cv) = const_sv_xsub; | |
6694 | CvCONST_on(cv); | |
d04ba589 | 6695 | CvISXSUB_on(cv); |
beab0874 JT |
6696 | } |
6697 | else { | |
c43ae56f | 6698 | GvCV_set(gv, NULL); |
9c0a6090 | 6699 | cv = newCONSTSUB_flags( |
6e948d54 | 6700 | NULL, name, namlen, name_is_utf8 ? SVf_UTF8 : 0, |
9c0a6090 FC |
6701 | const_sv |
6702 | ); | |
beab0874 | 6703 | } |
03d9f026 | 6704 | stash = |
e1a479c5 BB |
6705 | (CvGV(cv) && GvSTASH(CvGV(cv))) |
6706 | ? GvSTASH(CvGV(cv)) | |
6707 | : CvSTASH(cv) | |
6708 | ? CvSTASH(cv) | |
03d9f026 FC |
6709 | : PL_curstash; |
6710 | if (HvENAME_HEK(stash)) | |
6711 | mro_method_changed_in(stash); /* sub Foo::Bar () { 123 } */ | |
eb8433b7 NC |
6712 | if (PL_madskills) |
6713 | goto install_block; | |
beab0874 JT |
6714 | op_free(block); |
6715 | SvREFCNT_dec(PL_compcv); | |
6716 | PL_compcv = NULL; | |
beab0874 JT |
6717 | goto done; |
6718 | } | |
09330df8 Z |
6719 | if (cv) { /* must reuse cv if autoloaded */ |
6720 | /* transfer PL_compcv to cv */ | |
6721 | if (block | |
eb8433b7 | 6722 | #ifdef PERL_MAD |
09330df8 | 6723 | && block->op_type != OP_NULL |
eb8433b7 | 6724 | #endif |
09330df8 | 6725 | ) { |
eac910c8 | 6726 | cv_flags_t existing_builtin_attrs = CvFLAGS(cv) & CVf_BUILTIN_ATTRS; |
437388a9 NC |
6727 | AV *const temp_av = CvPADLIST(cv); |
6728 | CV *const temp_cv = CvOUTSIDE(cv); | |
6729 | ||
6730 | assert(!CvWEAKOUTSIDE(cv)); | |
6731 | assert(!CvCVGV_RC(cv)); | |
6732 | assert(CvGV(cv) == gv); | |
6733 | ||
6734 | SvPOK_off(cv); | |
eac910c8 | 6735 | CvFLAGS(cv) = CvFLAGS(PL_compcv) | existing_builtin_attrs; |
09330df8 Z |
6736 | CvOUTSIDE(cv) = CvOUTSIDE(PL_compcv); |
6737 | CvOUTSIDE_SEQ(cv) = CvOUTSIDE_SEQ(PL_compcv); | |
09330df8 | 6738 | CvPADLIST(cv) = CvPADLIST(PL_compcv); |
437388a9 NC |
6739 | CvOUTSIDE(PL_compcv) = temp_cv; |
6740 | CvPADLIST(PL_compcv) = temp_av; | |
6741 | ||
bad4ae38 | 6742 | if (CvFILE(cv) && CvDYNFILE(cv)) { |
437388a9 NC |
6743 | Safefree(CvFILE(cv)); |
6744 | } | |
437388a9 NC |
6745 | CvFILE_set_from_cop(cv, PL_curcop); |
6746 | CvSTASH_set(cv, PL_curstash); | |
6747 | ||
09330df8 Z |
6748 | /* inner references to PL_compcv must be fixed up ... */ |
6749 | pad_fixup_inner_anons(CvPADLIST(cv), PL_compcv, cv); | |
6750 | if (PERLDB_INTER)/* Advice debugger on the new sub. */ | |
6751 | ++PL_sub_generation; | |
09bef843 SB |
6752 | } |
6753 | else { | |
09330df8 Z |
6754 | /* Might have had built-in attributes applied -- propagate them. */ |
6755 | CvFLAGS(cv) |= (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS); | |
09bef843 | 6756 | } |
282f25c9 | 6757 | /* ... before we throw it away */ |
3280af22 | 6758 | SvREFCNT_dec(PL_compcv); |
b5c19bd7 | 6759 | PL_compcv = cv; |
a0d0e21e LW |
6760 | } |
6761 | else { | |
3280af22 | 6762 | cv = PL_compcv; |
44a8e56a | 6763 | if (name) { |
c43ae56f | 6764 | GvCV_set(gv, cv); |
eb8433b7 NC |
6765 | if (PL_madskills) { |
6766 | if (strEQ(name, "import")) { | |
ad64d0ec | 6767 | PL_formfeed = MUTABLE_SV(cv); |
06f07c2f | 6768 | /* diag_listed_as: SKIPME */ |
fea10cf6 | 6769 | Perl_warner(aTHX_ packWARN(WARN_VOID), "0x%"UVxf"\n", PTR2UV(cv)); |
eb8433b7 NC |
6770 | } |
6771 | } | |
44a8e56a | 6772 | GvCVGEN(gv) = 0; |
03d9f026 FC |
6773 | if (HvENAME_HEK(GvSTASH(gv))) |
6774 | /* sub Foo::bar { (shift)+1 } */ | |
6775 | mro_method_changed_in(GvSTASH(gv)); | |
44a8e56a | 6776 | } |
a0d0e21e | 6777 | } |
09330df8 | 6778 | if (!CvGV(cv)) { |
b3f91e91 | 6779 | CvGV_set(cv, gv); |
09330df8 | 6780 | CvFILE_set_from_cop(cv, PL_curcop); |
c68d9564 | 6781 | CvSTASH_set(cv, PL_curstash); |
09330df8 | 6782 | } |
8990e307 | 6783 | |
e0260a5b | 6784 | if (ps) { |
ad64d0ec | 6785 | sv_setpvn(MUTABLE_SV(cv), ps, ps_len); |
e0260a5b BF |
6786 | if ( ps_utf8 ) SvUTF8_on(MUTABLE_SV(cv)); |
6787 | } | |
4633a7c4 | 6788 | |
13765c85 | 6789 | if (PL_parser && PL_parser->error_count) { |
c07a80fd | 6790 | op_free(block); |
5f66b61c | 6791 | block = NULL; |
68dc0745 | 6792 | if (name) { |
6867be6d | 6793 | const char *s = strrchr(name, ':'); |
68dc0745 | 6794 | s = s ? s+1 : name; |
6d4c2119 | 6795 | if (strEQ(s, "BEGIN")) { |
e1ec3a88 | 6796 | const char not_safe[] = |
6d4c2119 | 6797 | "BEGIN not safe after errors--compilation aborted"; |
faef0170 | 6798 | if (PL_in_eval & EVAL_KEEPERR) |
cea2e8a9 | 6799 | Perl_croak(aTHX_ not_safe); |
6d4c2119 CS |
6800 | else { |
6801 | /* force display of errors found but not reported */ | |
38a03e6e | 6802 | sv_catpv(ERRSV, not_safe); |
be2597df | 6803 | Perl_croak(aTHX_ "%"SVf, SVfARG(ERRSV)); |
6d4c2119 CS |
6804 | } |
6805 | } | |
68dc0745 | 6806 | } |
c07a80fd | 6807 | } |
eb8433b7 | 6808 | install_block: |
beab0874 | 6809 | if (!block) |
fb834abd | 6810 | goto attrs; |
a0d0e21e | 6811 | |
aac018bb NC |
6812 | /* If we assign an optree to a PVCV, then we've defined a subroutine that |
6813 | the debugger could be able to set a breakpoint in, so signal to | |
6814 | pp_entereval that it should not throw away any saved lines at scope | |
6815 | exit. */ | |
6816 | ||
fd06b02c | 6817 | PL_breakable_sub_gen++; |
69b22cd1 FC |
6818 | /* This makes sub {}; work as expected. */ |
6819 | if (block->op_type == OP_STUB) { | |
1496a290 | 6820 | OP* const newblock = newSTATEOP(0, NULL, 0); |
eb8433b7 NC |
6821 | #ifdef PERL_MAD |
6822 | op_getmad(block,newblock,'B'); | |
6823 | #else | |
09c2fd24 | 6824 | op_free(block); |
eb8433b7 NC |
6825 | #endif |
6826 | block = newblock; | |
7766f137 | 6827 | } |
69b22cd1 FC |
6828 | else block->op_attached = 1; |
6829 | CvROOT(cv) = CvLVALUE(cv) | |
6830 | ? newUNOP(OP_LEAVESUBLV, 0, | |
6831 | op_lvalue(scalarseq(block), OP_LEAVESUBLV)) | |
6832 | : newUNOP(OP_LEAVESUB, 0, scalarseq(block)); | |
7766f137 GS |
6833 | CvROOT(cv)->op_private |= OPpREFCOUNTED; |
6834 | OpREFCNT_set(CvROOT(cv), 1); | |
6835 | CvSTART(cv) = LINKLIST(CvROOT(cv)); | |
6836 | CvROOT(cv)->op_next = 0; | |
a2efc822 | 6837 | CALL_PEEP(CvSTART(cv)); |
d164302a | 6838 | finalize_optree(CvROOT(cv)); |
7766f137 GS |
6839 | |
6840 | /* now that optimizer has done its work, adjust pad values */ | |
54310121 | 6841 | |
dd2155a4 DM |
6842 | pad_tidy(CvCLONE(cv) ? padtidy_SUBCLONE : padtidy_SUB); |
6843 | ||
6844 | if (CvCLONE(cv)) { | |
beab0874 JT |
6845 | assert(!CvCONST(cv)); |
6846 | if (ps && !*ps && op_const_sv(block, cv)) | |
6847 | CvCONST_on(cv); | |
a0d0e21e | 6848 | } |
79072805 | 6849 | |
fb834abd FC |
6850 | attrs: |
6851 | if (attrs) { | |
6852 | /* Need to do a C<use attributes $stash_of_cv,\&cv,@attrs>. */ | |
6853 | HV *stash = name && GvSTASH(CvGV(cv)) ? GvSTASH(CvGV(cv)) : PL_curstash; | |
6854 | apply_attrs(stash, MUTABLE_SV(cv), attrs, FALSE); | |
6855 | } | |
6856 | ||
6857 | if (block && has_name) { | |
3280af22 | 6858 | if (PERLDB_SUBLINE && PL_curstash != PL_debstash) { |
c4420975 | 6859 | SV * const tmpstr = sv_newmortal(); |
5c1737d1 NC |
6860 | GV * const db_postponed = gv_fetchpvs("DB::postponed", |
6861 | GV_ADDMULTI, SVt_PVHV); | |
44a8e56a | 6862 | HV *hv; |
b081dd7e NC |
6863 | SV * const sv = Perl_newSVpvf(aTHX_ "%s:%ld-%ld", |
6864 | CopFILE(PL_curcop), | |
6865 | (long)PL_subline, | |
6866 | (long)CopLINE(PL_curcop)); | |
bd61b366 | 6867 | gv_efullname3(tmpstr, gv, NULL); |
04fe65b0 | 6868 | (void)hv_store(GvHV(PL_DBsub), SvPVX_const(tmpstr), |
c60dbbc3 | 6869 | SvUTF8(tmpstr) ? -(I32)SvCUR(tmpstr) : (I32)SvCUR(tmpstr), sv, 0); |
44a8e56a | 6870 | hv = GvHVn(db_postponed); |
c60dbbc3 | 6871 | if (HvTOTALKEYS(hv) > 0 && hv_exists(hv, SvPVX_const(tmpstr), SvUTF8(tmpstr) ? -(I32)SvCUR(tmpstr) : (I32)SvCUR(tmpstr))) { |
551405c4 AL |
6872 | CV * const pcv = GvCV(db_postponed); |
6873 | if (pcv) { | |
6874 | dSP; | |
6875 | PUSHMARK(SP); | |
6876 | XPUSHs(tmpstr); | |
6877 | PUTBACK; | |
ad64d0ec | 6878 | call_sv(MUTABLE_SV(pcv), G_DISCARD); |
551405c4 | 6879 | } |
44a8e56a | 6880 | } |
6881 | } | |
79072805 | 6882 | |
13765c85 | 6883 | if (name && ! (PL_parser && PL_parser->error_count)) |
0cd10f52 | 6884 | process_special_blocks(name, gv, cv); |
33fb7a6e | 6885 | } |
ed094faf | 6886 | |
33fb7a6e | 6887 | done: |
53a7735b DM |
6888 | if (PL_parser) |
6889 | PL_parser->copline = NOLINE; | |
33fb7a6e NC |
6890 | LEAVE_SCOPE(floor); |
6891 | return cv; | |
6892 | } | |
ed094faf | 6893 | |
33fb7a6e NC |
6894 | STATIC void |
6895 | S_process_special_blocks(pTHX_ const char *const fullname, GV *const gv, | |
6896 | CV *const cv) | |
6897 | { | |
6898 | const char *const colon = strrchr(fullname,':'); | |
6899 | const char *const name = colon ? colon + 1 : fullname; | |
6900 | ||
7918f24d NC |
6901 | PERL_ARGS_ASSERT_PROCESS_SPECIAL_BLOCKS; |
6902 | ||
33fb7a6e | 6903 | if (*name == 'B') { |
6952d67e | 6904 | if (strEQ(name, "BEGIN")) { |
6867be6d | 6905 | const I32 oldscope = PL_scopestack_ix; |
28757baa | 6906 | ENTER; |
57843af0 GS |
6907 | SAVECOPFILE(&PL_compiling); |
6908 | SAVECOPLINE(&PL_compiling); | |
16c63275 | 6909 | SAVEVPTR(PL_curcop); |
28757baa | 6910 | |
a58fb6f9 | 6911 | DEBUG_x( dump_sub(gv) ); |
ad64d0ec | 6912 | Perl_av_create_and_push(aTHX_ &PL_beginav, MUTABLE_SV(cv)); |
c43ae56f | 6913 | GvCV_set(gv,0); /* cv has been hijacked */ |
3280af22 | 6914 | call_list(oldscope, PL_beginav); |
a6006777 | 6915 | |
623e6609 | 6916 | CopHINTS_set(&PL_compiling, PL_hints); |
28757baa | 6917 | LEAVE; |
6918 | } | |
33fb7a6e NC |
6919 | else |
6920 | return; | |
6921 | } else { | |
6922 | if (*name == 'E') { | |
6923 | if strEQ(name, "END") { | |
a58fb6f9 | 6924 | DEBUG_x( dump_sub(gv) ); |
ad64d0ec | 6925 | Perl_av_create_and_unshift_one(aTHX_ &PL_endav, MUTABLE_SV(cv)); |
33fb7a6e NC |
6926 | } else |
6927 | return; | |
6928 | } else if (*name == 'U') { | |
6929 | if (strEQ(name, "UNITCHECK")) { | |
6930 | /* It's never too late to run a unitcheck block */ | |
ad64d0ec | 6931 | Perl_av_create_and_unshift_one(aTHX_ &PL_unitcheckav, MUTABLE_SV(cv)); |
33fb7a6e NC |
6932 | } |
6933 | else | |
6934 | return; | |
6935 | } else if (*name == 'C') { | |
6936 | if (strEQ(name, "CHECK")) { | |
a2a5de95 | 6937 | if (PL_main_start) |
dcbac5bb | 6938 | /* diag_listed_as: Too late to run %s block */ |
a2a5de95 NC |
6939 | Perl_ck_warner(aTHX_ packWARN(WARN_VOID), |
6940 | "Too late to run CHECK block"); | |
ad64d0ec | 6941 | Perl_av_create_and_unshift_one(aTHX_ &PL_checkav, MUTABLE_SV(cv)); |
33fb7a6e NC |
6942 | } |
6943 | else | |
6944 | return; | |
6945 | } else if (*name == 'I') { | |
6946 | if (strEQ(name, "INIT")) { | |
a2a5de95 | 6947 | if (PL_main_start) |
dcbac5bb | 6948 | /* diag_listed_as: Too late to run %s block */ |
a2a5de95 NC |
6949 | Perl_ck_warner(aTHX_ packWARN(WARN_VOID), |
6950 | "Too late to run INIT block"); | |
ad64d0ec | 6951 | Perl_av_create_and_push(aTHX_ &PL_initav, MUTABLE_SV(cv)); |
33fb7a6e NC |
6952 | } |
6953 | else | |
6954 | return; | |
6955 | } else | |
6956 | return; | |
a58fb6f9 | 6957 | DEBUG_x( dump_sub(gv) ); |
c43ae56f | 6958 | GvCV_set(gv,0); /* cv has been hijacked */ |
79072805 | 6959 | } |
79072805 LW |
6960 | } |
6961 | ||
954c1994 GS |
6962 | /* |
6963 | =for apidoc newCONSTSUB | |
6964 | ||
3453414d BF |
6965 | See L</newCONSTSUB_flags>. |
6966 | ||
6967 | =cut | |
6968 | */ | |
6969 | ||
6970 | CV * | |
6971 | Perl_newCONSTSUB(pTHX_ HV *stash, const char *name, SV *sv) | |
6972 | { | |
9c0a6090 | 6973 | return newCONSTSUB_flags(stash, name, name ? strlen(name) : 0, 0, sv); |
3453414d BF |
6974 | } |
6975 | ||
6976 | /* | |
6977 | =for apidoc newCONSTSUB_flags | |
6978 | ||
954c1994 GS |
6979 | Creates a constant sub equivalent to Perl C<sub FOO () { 123 }> which is |
6980 | eligible for inlining at compile-time. | |
6981 | ||
3453414d BF |
6982 | Currently, the only useful value for C<flags> is SVf_UTF8. |
6983 | ||
99ab892b NC |
6984 | Passing NULL for SV creates a constant sub equivalent to C<sub BAR () {}>, |
6985 | which won't be called if used as a destructor, but will suppress the overhead | |
6986 | of a call to C<AUTOLOAD>. (This form, however, isn't eligible for inlining at | |
6987 | compile time.) | |
6988 | ||
954c1994 GS |
6989 | =cut |
6990 | */ | |
6991 | ||
beab0874 | 6992 | CV * |
9c0a6090 FC |
6993 | Perl_newCONSTSUB_flags(pTHX_ HV *stash, const char *name, STRLEN len, |
6994 | U32 flags, SV *sv) | |
5476c433 | 6995 | { |
27da23d5 | 6996 | dVAR; |
beab0874 | 6997 | CV* cv; |
cbf82dd0 | 6998 | #ifdef USE_ITHREADS |
54d012c6 | 6999 | const char *const file = CopFILE(PL_curcop); |
cbf82dd0 NC |
7000 | #else |
7001 | SV *const temp_sv = CopFILESV(PL_curcop); | |
def18e4c | 7002 | const char *const file = temp_sv ? SvPV_nolen_const(temp_sv) : NULL; |
cbf82dd0 | 7003 | #endif |
5476c433 | 7004 | |
11faa288 | 7005 | ENTER; |
11faa288 | 7006 | |
401667e9 DM |
7007 | if (IN_PERL_RUNTIME) { |
7008 | /* at runtime, it's not safe to manipulate PL_curcop: it may be | |
7009 | * an op shared between threads. Use a non-shared COP for our | |
7010 | * dirty work */ | |
7011 | SAVEVPTR(PL_curcop); | |
08f1b312 FC |
7012 | SAVECOMPILEWARNINGS(); |
7013 | PL_compiling.cop_warnings = DUP_WARNINGS(PL_curcop->cop_warnings); | |
401667e9 DM |
7014 | PL_curcop = &PL_compiling; |
7015 | } | |
f4dd75d9 | 7016 | SAVECOPLINE(PL_curcop); |
53a7735b | 7017 | CopLINE_set(PL_curcop, PL_parser ? PL_parser->copline : NOLINE); |
f4dd75d9 GS |
7018 | |
7019 | SAVEHINTS(); | |
3280af22 | 7020 | PL_hints &= ~HINT_BLOCK_SCOPE; |
11faa288 GS |
7021 | |
7022 | if (stash) { | |
03d9f026 | 7023 | SAVEGENERICSV(PL_curstash); |
03d9f026 | 7024 | PL_curstash = (HV *)SvREFCNT_inc_simple_NN(stash); |
11faa288 | 7025 | } |
5476c433 | 7026 | |
bad4ae38 | 7027 | /* file becomes the CvFILE. For an XS, it's usually static storage, |
cbf82dd0 NC |
7028 | and so doesn't get free()d. (It's expected to be from the C pre- |
7029 | processor __FILE__ directive). But we need a dynamically allocated one, | |
77004dee | 7030 | and we need it to get freed. */ |
8e1fa37c | 7031 | cv = newXS_len_flags(name, len, const_sv_xsub, file ? file : "", "", |
8f82b567 | 7032 | &sv, XS_DYNAMIC_FILENAME | flags); |
beab0874 JT |
7033 | CvXSUBANY(cv).any_ptr = sv; |
7034 | CvCONST_on(cv); | |
5476c433 | 7035 | |
11faa288 | 7036 | LEAVE; |
beab0874 JT |
7037 | |
7038 | return cv; | |
5476c433 JD |
7039 | } |
7040 | ||
77004dee NC |
7041 | CV * |
7042 | Perl_newXS_flags(pTHX_ const char *name, XSUBADDR_t subaddr, | |
7043 | const char *const filename, const char *const proto, | |
7044 | U32 flags) | |
7045 | { | |
032a0447 FC |
7046 | PERL_ARGS_ASSERT_NEWXS_FLAGS; |
7047 | return newXS_len_flags( | |
8f82b567 | 7048 | name, name ? strlen(name) : 0, subaddr, filename, proto, NULL, flags |
032a0447 FC |
7049 | ); |
7050 | } | |
7051 | ||
7052 | CV * | |
7053 | Perl_newXS_len_flags(pTHX_ const char *name, STRLEN len, | |
7054 | XSUBADDR_t subaddr, const char *const filename, | |
8f82b567 FC |
7055 | const char *const proto, SV **const_svp, |
7056 | U32 flags) | |
032a0447 | 7057 | { |
3453414d | 7058 | CV *cv; |
77004dee | 7059 | |
032a0447 | 7060 | PERL_ARGS_ASSERT_NEWXS_LEN_FLAGS; |
7918f24d | 7061 | |
3453414d | 7062 | { |
032a0447 FC |
7063 | GV * const gv = name |
7064 | ? gv_fetchpvn( | |
7065 | name,len,GV_ADDMULTI|flags,SVt_PVCV | |
7066 | ) | |
7067 | : gv_fetchpv( | |
3453414d BF |
7068 | (PL_curstash ? "__ANON__" : "__ANON__::__ANON__"), |
7069 | GV_ADDMULTI | flags, SVt_PVCV); | |
7070 | ||
7071 | if (!subaddr) | |
7072 | Perl_croak(aTHX_ "panic: no address for '%s' in '%s'", name, filename); | |
7073 | ||
7074 | if ((cv = (name ? GvCV(gv) : NULL))) { | |
7075 | if (GvCVGEN(gv)) { | |
7076 | /* just a cached method */ | |
7077 | SvREFCNT_dec(cv); | |
7078 | cv = NULL; | |
7079 | } | |
7080 | else if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
7081 | /* already defined (or promised) */ | |
18225a01 | 7082 | /* Redundant check that allows us to avoid creating an SV |
156d738f FC |
7083 | most of the time: */ |
7084 | if (CvCONST(cv) || ckWARN(WARN_REDEFINE)) { | |
799fd3b9 | 7085 | const line_t oldline = CopLINE(PL_curcop); |
799fd3b9 FC |
7086 | if (PL_parser && PL_parser->copline != NOLINE) |
7087 | CopLINE_set(PL_curcop, PL_parser->copline); | |
156d738f | 7088 | report_redefined_cv(newSVpvn_flags( |
46538741 | 7089 | name,len,(flags&SVf_UTF8)|SVs_TEMP |
156d738f FC |
7090 | ), |
7091 | cv, const_svp); | |
799fd3b9 | 7092 | CopLINE_set(PL_curcop, oldline); |
3453414d BF |
7093 | } |
7094 | SvREFCNT_dec(cv); | |
7095 | cv = NULL; | |
7096 | } | |
7097 | } | |
7098 | ||
7099 | if (cv) /* must reuse cv if autoloaded */ | |
7100 | cv_undef(cv); | |
7101 | else { | |
7102 | cv = MUTABLE_CV(newSV_type(SVt_PVCV)); | |
7103 | if (name) { | |
7104 | GvCV_set(gv,cv); | |
7105 | GvCVGEN(gv) = 0; | |
03d9f026 FC |
7106 | if (HvENAME_HEK(GvSTASH(gv))) |
7107 | mro_method_changed_in(GvSTASH(gv)); /* newXS */ | |
3453414d BF |
7108 | } |
7109 | } | |
7110 | if (!name) | |
7111 | CvANON_on(cv); | |
7112 | CvGV_set(cv, gv); | |
7113 | (void)gv_fetchfile(filename); | |
7114 | CvFILE(cv) = (char *)filename; /* NOTE: not copied, as it is expected to be | |
7115 | an external constant string */ | |
7116 | assert(!CvDYNFILE(cv)); /* cv_undef should have turned it off */ | |
7117 | CvISXSUB_on(cv); | |
7118 | CvXSUB(cv) = subaddr; | |
7119 | ||
7120 | if (name) | |
7121 | process_special_blocks(name, gv, cv); | |
7122 | } | |
7123 | ||
77004dee | 7124 | if (flags & XS_DYNAMIC_FILENAME) { |
bad4ae38 FC |
7125 | CvFILE(cv) = savepv(filename); |
7126 | CvDYNFILE_on(cv); | |
77004dee | 7127 | } |
bad4ae38 | 7128 | sv_setpv(MUTABLE_SV(cv), proto); |
77004dee NC |
7129 | return cv; |
7130 | } | |
7131 | ||
954c1994 GS |
7132 | /* |
7133 | =for apidoc U||newXS | |
7134 | ||
77004dee NC |
7135 | Used by C<xsubpp> to hook up XSUBs as Perl subs. I<filename> needs to be |
7136 | static storage, as it is used directly as CvFILE(), without a copy being made. | |
954c1994 GS |
7137 | |
7138 | =cut | |
7139 | */ | |
7140 | ||
57d3b86d | 7141 | CV * |
bfed75c6 | 7142 | Perl_newXS(pTHX_ const char *name, XSUBADDR_t subaddr, const char *filename) |
a0d0e21e | 7143 | { |
7918f24d | 7144 | PERL_ARGS_ASSERT_NEWXS; |
ce9f52ad FC |
7145 | return newXS_len_flags( |
7146 | name, name ? strlen(name) : 0, subaddr, filename, NULL, NULL, 0 | |
7147 | ); | |
79072805 LW |
7148 | } |
7149 | ||
eb8433b7 NC |
7150 | #ifdef PERL_MAD |
7151 | OP * | |
7152 | #else | |
79072805 | 7153 | void |
eb8433b7 | 7154 | #endif |
864dbfa3 | 7155 | Perl_newFORM(pTHX_ I32 floor, OP *o, OP *block) |
79072805 | 7156 | { |
97aff369 | 7157 | dVAR; |
79072805 | 7158 | register CV *cv; |
eb8433b7 NC |
7159 | #ifdef PERL_MAD |
7160 | OP* pegop = newOP(OP_NULL, 0); | |
7161 | #endif | |
79072805 | 7162 | |
0bd48802 | 7163 | GV * const gv = o |
f776e3cd | 7164 | ? gv_fetchsv(cSVOPo->op_sv, GV_ADD, SVt_PVFM) |
fafc274c | 7165 | : gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVFM); |
0bd48802 | 7166 | |
a5f75d66 | 7167 | GvMULTI_on(gv); |
155aba94 | 7168 | if ((cv = GvFORM(gv))) { |
599cee73 | 7169 | if (ckWARN(WARN_REDEFINE)) { |
6867be6d | 7170 | const line_t oldline = CopLINE(PL_curcop); |
53a7735b DM |
7171 | if (PL_parser && PL_parser->copline != NOLINE) |
7172 | CopLINE_set(PL_curcop, PL_parser->copline); | |
ee6d2783 NC |
7173 | if (o) { |
7174 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), | |
7175 | "Format %"SVf" redefined", SVfARG(cSVOPo->op_sv)); | |
7176 | } else { | |
dcbac5bb | 7177 | /* diag_listed_as: Format %s redefined */ |
ee6d2783 NC |
7178 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), |
7179 | "Format STDOUT redefined"); | |
7180 | } | |
57843af0 | 7181 | CopLINE_set(PL_curcop, oldline); |
79072805 | 7182 | } |
8990e307 | 7183 | SvREFCNT_dec(cv); |
79072805 | 7184 | } |
3280af22 | 7185 | cv = PL_compcv; |
79072805 | 7186 | GvFORM(gv) = cv; |
b3f91e91 | 7187 | CvGV_set(cv, gv); |
a636914a | 7188 | CvFILE_set_from_cop(cv, PL_curcop); |
79072805 | 7189 | |
a0d0e21e | 7190 | |
dd2155a4 | 7191 | pad_tidy(padtidy_FORMAT); |
79072805 | 7192 | CvROOT(cv) = newUNOP(OP_LEAVEWRITE, 0, scalarseq(block)); |
7934575e GS |
7193 | CvROOT(cv)->op_private |= OPpREFCOUNTED; |
7194 | OpREFCNT_set(CvROOT(cv), 1); | |
79072805 LW |
7195 | CvSTART(cv) = LINKLIST(CvROOT(cv)); |
7196 | CvROOT(cv)->op_next = 0; | |
a2efc822 | 7197 | CALL_PEEP(CvSTART(cv)); |
aee4f072 | 7198 | finalize_optree(CvROOT(cv)); |
eb8433b7 NC |
7199 | #ifdef PERL_MAD |
7200 | op_getmad(o,pegop,'n'); | |
7201 | op_getmad_weak(block, pegop, 'b'); | |
7202 | #else | |
11343788 | 7203 | op_free(o); |
eb8433b7 | 7204 | #endif |
53a7735b DM |
7205 | if (PL_parser) |
7206 | PL_parser->copline = NOLINE; | |
8990e307 | 7207 | LEAVE_SCOPE(floor); |
eb8433b7 NC |
7208 | #ifdef PERL_MAD |
7209 | return pegop; | |
7210 | #endif | |
79072805 LW |
7211 | } |
7212 | ||
7213 | OP * | |
864dbfa3 | 7214 | Perl_newANONLIST(pTHX_ OP *o) |
79072805 | 7215 | { |
78c72037 | 7216 | return convert(OP_ANONLIST, OPf_SPECIAL, o); |
79072805 LW |
7217 | } |
7218 | ||
7219 | OP * | |
864dbfa3 | 7220 | Perl_newANONHASH(pTHX_ OP *o) |
79072805 | 7221 | { |
78c72037 | 7222 | return convert(OP_ANONHASH, OPf_SPECIAL, o); |
a0d0e21e LW |
7223 | } |
7224 | ||
7225 | OP * | |
864dbfa3 | 7226 | Perl_newANONSUB(pTHX_ I32 floor, OP *proto, OP *block) |
a0d0e21e | 7227 | { |
5f66b61c | 7228 | return newANONATTRSUB(floor, proto, NULL, block); |
09bef843 SB |
7229 | } |
7230 | ||
7231 | OP * | |
7232 | Perl_newANONATTRSUB(pTHX_ I32 floor, OP *proto, OP *attrs, OP *block) | |
7233 | { | |
a0d0e21e | 7234 | return newUNOP(OP_REFGEN, 0, |
09bef843 | 7235 | newSVOP(OP_ANONCODE, 0, |
ad64d0ec | 7236 | MUTABLE_SV(newATTRSUB(floor, 0, proto, attrs, block)))); |
79072805 LW |
7237 | } |
7238 | ||
7239 | OP * | |
864dbfa3 | 7240 | Perl_oopsAV(pTHX_ OP *o) |
79072805 | 7241 | { |
27da23d5 | 7242 | dVAR; |
7918f24d NC |
7243 | |
7244 | PERL_ARGS_ASSERT_OOPSAV; | |
7245 | ||
ed6116ce LW |
7246 | switch (o->op_type) { |
7247 | case OP_PADSV: | |
7248 | o->op_type = OP_PADAV; | |
22c35a8c | 7249 | o->op_ppaddr = PL_ppaddr[OP_PADAV]; |
51e247a3 | 7250 | return ref(o, OP_RV2AV); |
b2ffa427 | 7251 | |
ed6116ce | 7252 | case OP_RV2SV: |
79072805 | 7253 | o->op_type = OP_RV2AV; |
22c35a8c | 7254 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
79072805 | 7255 | ref(o, OP_RV2AV); |
ed6116ce LW |
7256 | break; |
7257 | ||
7258 | default: | |
9b387841 | 7259 | Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL), "oops: oopsAV"); |
ed6116ce LW |
7260 | break; |
7261 | } | |
79072805 LW |
7262 | return o; |
7263 | } | |
7264 | ||
7265 | OP * | |
864dbfa3 | 7266 | Perl_oopsHV(pTHX_ OP *o) |
79072805 | 7267 | { |
27da23d5 | 7268 | dVAR; |
7918f24d NC |
7269 | |
7270 | PERL_ARGS_ASSERT_OOPSHV; | |
7271 | ||
ed6116ce LW |
7272 | switch (o->op_type) { |
7273 | case OP_PADSV: | |
7274 | case OP_PADAV: | |
7275 | o->op_type = OP_PADHV; | |
22c35a8c | 7276 | o->op_ppaddr = PL_ppaddr[OP_PADHV]; |
51e247a3 | 7277 | return ref(o, OP_RV2HV); |
ed6116ce LW |
7278 | |
7279 | case OP_RV2SV: | |
7280 | case OP_RV2AV: | |
79072805 | 7281 | o->op_type = OP_RV2HV; |
22c35a8c | 7282 | o->op_ppaddr = PL_ppaddr[OP_RV2HV]; |
79072805 | 7283 | ref(o, OP_RV2HV); |
ed6116ce LW |
7284 | break; |
7285 | ||
7286 | default: | |
9b387841 | 7287 | Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL), "oops: oopsHV"); |
ed6116ce LW |
7288 | break; |
7289 | } | |
79072805 LW |
7290 | return o; |
7291 | } | |
7292 | ||
7293 | OP * | |
864dbfa3 | 7294 | Perl_newAVREF(pTHX_ OP *o) |
79072805 | 7295 | { |
27da23d5 | 7296 | dVAR; |
7918f24d NC |
7297 | |
7298 | PERL_ARGS_ASSERT_NEWAVREF; | |
7299 | ||
ed6116ce LW |
7300 | if (o->op_type == OP_PADANY) { |
7301 | o->op_type = OP_PADAV; | |
22c35a8c | 7302 | o->op_ppaddr = PL_ppaddr[OP_PADAV]; |
93a17b20 | 7303 | return o; |
ed6116ce | 7304 | } |
a2a5de95 | 7305 | else if ((o->op_type == OP_RV2AV || o->op_type == OP_PADAV)) { |
d1d15184 | 7306 | Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED), |
a2a5de95 | 7307 | "Using an array as a reference is deprecated"); |
a1063b2d | 7308 | } |
79072805 LW |
7309 | return newUNOP(OP_RV2AV, 0, scalar(o)); |
7310 | } | |
7311 | ||
7312 | OP * | |
864dbfa3 | 7313 | Perl_newGVREF(pTHX_ I32 type, OP *o) |
79072805 | 7314 | { |
82092f1d | 7315 | if (type == OP_MAPSTART || type == OP_GREPSTART || type == OP_SORT) |
a0d0e21e | 7316 | return newUNOP(OP_NULL, 0, o); |
748a9306 | 7317 | return ref(newUNOP(OP_RV2GV, OPf_REF, o), type); |
79072805 LW |
7318 | } |
7319 | ||
7320 | OP * | |
864dbfa3 | 7321 | Perl_newHVREF(pTHX_ OP *o) |
79072805 | 7322 | { |
27da23d5 | 7323 | dVAR; |
7918f24d NC |
7324 | |
7325 | PERL_ARGS_ASSERT_NEWHVREF; | |
7326 | ||
ed6116ce LW |
7327 | if (o->op_type == OP_PADANY) { |
7328 | o->op_type = OP_PADHV; | |
22c35a8c | 7329 | o->op_ppaddr = PL_ppaddr[OP_PADHV]; |
93a17b20 | 7330 | return o; |
ed6116ce | 7331 | } |
a2a5de95 | 7332 | else if ((o->op_type == OP_RV2HV || o->op_type == OP_PADHV)) { |
d1d15184 | 7333 | Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED), |
a2a5de95 | 7334 | "Using a hash as a reference is deprecated"); |
a1063b2d | 7335 | } |
79072805 LW |
7336 | return newUNOP(OP_RV2HV, 0, scalar(o)); |
7337 | } | |
7338 | ||
7339 | OP * | |
864dbfa3 | 7340 | Perl_newCVREF(pTHX_ I32 flags, OP *o) |
79072805 | 7341 | { |
c07a80fd | 7342 | return newUNOP(OP_RV2CV, flags, scalar(o)); |
79072805 LW |
7343 | } |
7344 | ||
7345 | OP * | |
864dbfa3 | 7346 | Perl_newSVREF(pTHX_ OP *o) |
79072805 | 7347 | { |
27da23d5 | 7348 | dVAR; |
7918f24d NC |
7349 | |
7350 | PERL_ARGS_ASSERT_NEWSVREF; | |
7351 | ||
ed6116ce LW |
7352 | if (o->op_type == OP_PADANY) { |
7353 | o->op_type = OP_PADSV; | |
22c35a8c | 7354 | o->op_ppaddr = PL_ppaddr[OP_PADSV]; |
93a17b20 | 7355 | return o; |
ed6116ce | 7356 | } |
79072805 LW |
7357 | return newUNOP(OP_RV2SV, 0, scalar(o)); |
7358 | } | |
7359 | ||
61b743bb DM |
7360 | /* Check routines. See the comments at the top of this file for details |
7361 | * on when these are called */ | |
79072805 LW |
7362 | |
7363 | OP * | |
cea2e8a9 | 7364 | Perl_ck_anoncode(pTHX_ OP *o) |
5f05dabc | 7365 | { |
7918f24d NC |
7366 | PERL_ARGS_ASSERT_CK_ANONCODE; |
7367 | ||
cc76b5cc | 7368 | cSVOPo->op_targ = pad_add_anon((CV*)cSVOPo->op_sv, o->op_type); |
eb8433b7 | 7369 | if (!PL_madskills) |
1d866c12 | 7370 | cSVOPo->op_sv = NULL; |
5dc0d613 | 7371 | return o; |
5f05dabc | 7372 | } |
7373 | ||
7374 | OP * | |
cea2e8a9 | 7375 | Perl_ck_bitop(pTHX_ OP *o) |
55497cff | 7376 | { |
97aff369 | 7377 | dVAR; |
7918f24d NC |
7378 | |
7379 | PERL_ARGS_ASSERT_CK_BITOP; | |
7380 | ||
d5ec2987 | 7381 | o->op_private = (U8)(PL_hints & HINT_INTEGER); |
2b84528b RGS |
7382 | if (!(o->op_flags & OPf_STACKED) /* Not an assignment */ |
7383 | && (o->op_type == OP_BIT_OR | |
7384 | || o->op_type == OP_BIT_AND | |
7385 | || o->op_type == OP_BIT_XOR)) | |
276b2a0c | 7386 | { |
1df70142 AL |
7387 | const OP * const left = cBINOPo->op_first; |
7388 | const OP * const right = left->op_sibling; | |
96a925ab YST |
7389 | if ((OP_IS_NUMCOMPARE(left->op_type) && |
7390 | (left->op_flags & OPf_PARENS) == 0) || | |
7391 | (OP_IS_NUMCOMPARE(right->op_type) && | |
7392 | (right->op_flags & OPf_PARENS) == 0)) | |
a2a5de95 NC |
7393 | Perl_ck_warner(aTHX_ packWARN(WARN_PRECEDENCE), |
7394 | "Possible precedence problem on bitwise %c operator", | |
7395 | o->op_type == OP_BIT_OR ? '|' | |
7396 | : o->op_type == OP_BIT_AND ? '&' : '^' | |
7397 | ); | |
276b2a0c | 7398 | } |
5dc0d613 | 7399 | return o; |
55497cff | 7400 | } |
7401 | ||
89474f50 FC |
7402 | PERL_STATIC_INLINE bool |
7403 | is_dollar_bracket(pTHX_ const OP * const o) | |
7404 | { | |
7405 | const OP *kid; | |
7406 | return o->op_type == OP_RV2SV && o->op_flags & OPf_KIDS | |
7407 | && (kid = cUNOPx(o)->op_first) | |
7408 | && kid->op_type == OP_GV | |
7409 | && strEQ(GvNAME(cGVOPx_gv(kid)), "["); | |
7410 | } | |
7411 | ||
7412 | OP * | |
7413 | Perl_ck_cmp(pTHX_ OP *o) | |
7414 | { | |
7415 | PERL_ARGS_ASSERT_CK_CMP; | |
7416 | if (ckWARN(WARN_SYNTAX)) { | |
7417 | const OP *kid = cUNOPo->op_first; | |
7418 | if (kid && ( | |
7c2b3c78 FC |
7419 | ( |
7420 | is_dollar_bracket(aTHX_ kid) | |
7421 | && kid->op_sibling && kid->op_sibling->op_type == OP_CONST | |
7422 | ) | |
7423 | || ( kid->op_type == OP_CONST | |
7424 | && (kid = kid->op_sibling) && is_dollar_bracket(aTHX_ kid)) | |
89474f50 FC |
7425 | )) |
7426 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), | |
7427 | "$[ used in %s (did you mean $] ?)", OP_DESC(o)); | |
7428 | } | |
7429 | return o; | |
7430 | } | |
7431 | ||
55497cff | 7432 | OP * |
cea2e8a9 | 7433 | Perl_ck_concat(pTHX_ OP *o) |
79072805 | 7434 | { |
0bd48802 | 7435 | const OP * const kid = cUNOPo->op_first; |
7918f24d NC |
7436 | |
7437 | PERL_ARGS_ASSERT_CK_CONCAT; | |
96a5add6 | 7438 | PERL_UNUSED_CONTEXT; |
7918f24d | 7439 | |
df91b2c5 AE |
7440 | if (kid->op_type == OP_CONCAT && !(kid->op_private & OPpTARGET_MY) && |
7441 | !(kUNOP->op_first->op_flags & OPf_MOD)) | |
0165acc7 | 7442 | o->op_flags |= OPf_STACKED; |
11343788 | 7443 | return o; |
79072805 LW |
7444 | } |
7445 | ||
7446 | OP * | |
cea2e8a9 | 7447 | Perl_ck_spair(pTHX_ OP *o) |
79072805 | 7448 | { |
27da23d5 | 7449 | dVAR; |
7918f24d NC |
7450 | |
7451 | PERL_ARGS_ASSERT_CK_SPAIR; | |
7452 | ||
11343788 | 7453 | if (o->op_flags & OPf_KIDS) { |
79072805 | 7454 | OP* newop; |
a0d0e21e | 7455 | OP* kid; |
6867be6d | 7456 | const OPCODE type = o->op_type; |
5dc0d613 | 7457 | o = modkids(ck_fun(o), type); |
11343788 | 7458 | kid = cUNOPo->op_first; |
a0d0e21e | 7459 | newop = kUNOP->op_first->op_sibling; |
1496a290 AL |
7460 | if (newop) { |
7461 | const OPCODE type = newop->op_type; | |
7462 | if (newop->op_sibling || !(PL_opargs[type] & OA_RETSCALAR) || | |
7463 | type == OP_PADAV || type == OP_PADHV || | |
7464 | type == OP_RV2AV || type == OP_RV2HV) | |
7465 | return o; | |
a0d0e21e | 7466 | } |
eb8433b7 NC |
7467 | #ifdef PERL_MAD |
7468 | op_getmad(kUNOP->op_first,newop,'K'); | |
7469 | #else | |
a0d0e21e | 7470 | op_free(kUNOP->op_first); |
eb8433b7 | 7471 | #endif |
a0d0e21e LW |
7472 | kUNOP->op_first = newop; |
7473 | } | |
22c35a8c | 7474 | o->op_ppaddr = PL_ppaddr[++o->op_type]; |
11343788 | 7475 | return ck_fun(o); |
a0d0e21e LW |
7476 | } |
7477 | ||
7478 | OP * | |
cea2e8a9 | 7479 | Perl_ck_delete(pTHX_ OP *o) |
a0d0e21e | 7480 | { |
7918f24d NC |
7481 | PERL_ARGS_ASSERT_CK_DELETE; |
7482 | ||
11343788 | 7483 | o = ck_fun(o); |
5dc0d613 | 7484 | o->op_private = 0; |
11343788 | 7485 | if (o->op_flags & OPf_KIDS) { |
551405c4 | 7486 | OP * const kid = cUNOPo->op_first; |
01020589 GS |
7487 | switch (kid->op_type) { |
7488 | case OP_ASLICE: | |
7489 | o->op_flags |= OPf_SPECIAL; | |
7490 | /* FALL THROUGH */ | |
7491 | case OP_HSLICE: | |
5dc0d613 | 7492 | o->op_private |= OPpSLICE; |
01020589 GS |
7493 | break; |
7494 | case OP_AELEM: | |
7495 | o->op_flags |= OPf_SPECIAL; | |
7496 | /* FALL THROUGH */ | |
7497 | case OP_HELEM: | |
7498 | break; | |
7499 | default: | |
7500 | Perl_croak(aTHX_ "%s argument is not a HASH or ARRAY element or slice", | |
53e06cf0 | 7501 | OP_DESC(o)); |
01020589 | 7502 | } |
7332a6c4 VP |
7503 | if (kid->op_private & OPpLVAL_INTRO) |
7504 | o->op_private |= OPpLVAL_INTRO; | |
93c66552 | 7505 | op_null(kid); |
79072805 | 7506 | } |
11343788 | 7507 | return o; |
79072805 LW |
7508 | } |
7509 | ||
7510 | OP * | |
96e176bf CL |
7511 | Perl_ck_die(pTHX_ OP *o) |
7512 | { | |
7918f24d NC |
7513 | PERL_ARGS_ASSERT_CK_DIE; |
7514 | ||
96e176bf CL |
7515 | #ifdef VMS |
7516 | if (VMSISH_HUSHED) o->op_private |= OPpHUSH_VMSISH; | |
7517 | #endif | |
7518 | return ck_fun(o); | |
7519 | } | |
7520 | ||
7521 | OP * | |
cea2e8a9 | 7522 | Perl_ck_eof(pTHX_ OP *o) |
79072805 | 7523 | { |
97aff369 | 7524 | dVAR; |
79072805 | 7525 | |
7918f24d NC |
7526 | PERL_ARGS_ASSERT_CK_EOF; |
7527 | ||
11343788 | 7528 | if (o->op_flags & OPf_KIDS) { |
3500db16 | 7529 | OP *kid; |
11343788 | 7530 | if (cLISTOPo->op_first->op_type == OP_STUB) { |
1d866c12 AL |
7531 | OP * const newop |
7532 | = newUNOP(o->op_type, OPf_SPECIAL, newGVOP(OP_GV, 0, PL_argvgv)); | |
eb8433b7 NC |
7533 | #ifdef PERL_MAD |
7534 | op_getmad(o,newop,'O'); | |
7535 | #else | |
11343788 | 7536 | op_free(o); |
eb8433b7 NC |
7537 | #endif |
7538 | o = newop; | |
8990e307 | 7539 | } |
3500db16 FC |
7540 | o = ck_fun(o); |
7541 | kid = cLISTOPo->op_first; | |
7542 | if (kid->op_type == OP_RV2GV) | |
7543 | kid->op_private |= OPpALLOW_FAKE; | |
79072805 | 7544 | } |
11343788 | 7545 | return o; |
79072805 LW |
7546 | } |
7547 | ||
7548 | OP * | |
cea2e8a9 | 7549 | Perl_ck_eval(pTHX_ OP *o) |
79072805 | 7550 | { |
27da23d5 | 7551 | dVAR; |
7918f24d NC |
7552 | |
7553 | PERL_ARGS_ASSERT_CK_EVAL; | |
7554 | ||
3280af22 | 7555 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 7556 | if (o->op_flags & OPf_KIDS) { |
46c461b5 | 7557 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
79072805 | 7558 | |
93a17b20 | 7559 | if (!kid) { |
11343788 | 7560 | o->op_flags &= ~OPf_KIDS; |
93c66552 | 7561 | op_null(o); |
79072805 | 7562 | } |
b14574b4 | 7563 | else if (kid->op_type == OP_LINESEQ || kid->op_type == OP_STUB) { |
79072805 | 7564 | LOGOP *enter; |
eb8433b7 | 7565 | #ifdef PERL_MAD |
1d866c12 | 7566 | OP* const oldo = o; |
eb8433b7 | 7567 | #endif |
79072805 | 7568 | |
11343788 | 7569 | cUNOPo->op_first = 0; |
eb8433b7 | 7570 | #ifndef PERL_MAD |
11343788 | 7571 | op_free(o); |
eb8433b7 | 7572 | #endif |
79072805 | 7573 | |
b7dc083c | 7574 | NewOp(1101, enter, 1, LOGOP); |
79072805 | 7575 | enter->op_type = OP_ENTERTRY; |
22c35a8c | 7576 | enter->op_ppaddr = PL_ppaddr[OP_ENTERTRY]; |
79072805 LW |
7577 | enter->op_private = 0; |
7578 | ||
7579 | /* establish postfix order */ | |
7580 | enter->op_next = (OP*)enter; | |
7581 | ||
2fcb4757 | 7582 | o = op_prepend_elem(OP_LINESEQ, (OP*)enter, (OP*)kid); |
11343788 | 7583 | o->op_type = OP_LEAVETRY; |
22c35a8c | 7584 | o->op_ppaddr = PL_ppaddr[OP_LEAVETRY]; |
11343788 | 7585 | enter->op_other = o; |
eb8433b7 | 7586 | op_getmad(oldo,o,'O'); |
11343788 | 7587 | return o; |
79072805 | 7588 | } |
b5c19bd7 | 7589 | else { |
473986ff | 7590 | scalar((OP*)kid); |
b5c19bd7 DM |
7591 | PL_cv_has_eval = 1; |
7592 | } | |
79072805 LW |
7593 | } |
7594 | else { | |
a4a3cf74 | 7595 | const U8 priv = o->op_private; |
eb8433b7 | 7596 | #ifdef PERL_MAD |
1d866c12 | 7597 | OP* const oldo = o; |
eb8433b7 | 7598 | #else |
11343788 | 7599 | op_free(o); |
eb8433b7 | 7600 | #endif |
7d789282 | 7601 | o = newUNOP(OP_ENTEREVAL, priv <<8, newDEFSVOP()); |
eb8433b7 | 7602 | op_getmad(oldo,o,'O'); |
79072805 | 7603 | } |
3280af22 | 7604 | o->op_targ = (PADOFFSET)PL_hints; |
547ae129 | 7605 | if (o->op_private & OPpEVAL_BYTES) o->op_targ &= ~HINT_UTF8; |
7d789282 FC |
7606 | if ((PL_hints & HINT_LOCALIZE_HH) != 0 |
7607 | && !(o->op_private & OPpEVAL_COPHH) && GvHV(PL_hintgv)) { | |
996c9baa VP |
7608 | /* Store a copy of %^H that pp_entereval can pick up. */ |
7609 | OP *hhop = newSVOP(OP_HINTSEVAL, 0, | |
defdfed5 | 7610 | MUTABLE_SV(hv_copy_hints_hv(GvHV(PL_hintgv)))); |
0d863452 RH |
7611 | cUNOPo->op_first->op_sibling = hhop; |
7612 | o->op_private |= OPpEVAL_HAS_HH; | |
915a83fe FC |
7613 | } |
7614 | if (!(o->op_private & OPpEVAL_BYTES) | |
2846acbf | 7615 | && FEATURE_UNIEVAL_IS_ENABLED) |
802a15e9 | 7616 | o->op_private |= OPpEVAL_UNICODE; |
11343788 | 7617 | return o; |
79072805 LW |
7618 | } |
7619 | ||
7620 | OP * | |
d98f61e7 GS |
7621 | Perl_ck_exit(pTHX_ OP *o) |
7622 | { | |
7918f24d NC |
7623 | PERL_ARGS_ASSERT_CK_EXIT; |
7624 | ||
d98f61e7 | 7625 | #ifdef VMS |
551405c4 | 7626 | HV * const table = GvHV(PL_hintgv); |
d98f61e7 | 7627 | if (table) { |
a4fc7abc | 7628 | SV * const * const svp = hv_fetchs(table, "vmsish_exit", FALSE); |
d98f61e7 GS |
7629 | if (svp && *svp && SvTRUE(*svp)) |
7630 | o->op_private |= OPpEXIT_VMSISH; | |
7631 | } | |
96e176bf | 7632 | if (VMSISH_HUSHED) o->op_private |= OPpHUSH_VMSISH; |
d98f61e7 GS |
7633 | #endif |
7634 | return ck_fun(o); | |
7635 | } | |
7636 | ||
7637 | OP * | |
cea2e8a9 | 7638 | Perl_ck_exec(pTHX_ OP *o) |
79072805 | 7639 | { |
7918f24d NC |
7640 | PERL_ARGS_ASSERT_CK_EXEC; |
7641 | ||
11343788 | 7642 | if (o->op_flags & OPf_STACKED) { |
6867be6d | 7643 | OP *kid; |
11343788 MB |
7644 | o = ck_fun(o); |
7645 | kid = cUNOPo->op_first->op_sibling; | |
8990e307 | 7646 | if (kid->op_type == OP_RV2GV) |
93c66552 | 7647 | op_null(kid); |
79072805 | 7648 | } |
463ee0b2 | 7649 | else |
11343788 MB |
7650 | o = listkids(o); |
7651 | return o; | |
79072805 LW |
7652 | } |
7653 | ||
7654 | OP * | |
cea2e8a9 | 7655 | Perl_ck_exists(pTHX_ OP *o) |
5f05dabc | 7656 | { |
97aff369 | 7657 | dVAR; |
7918f24d NC |
7658 | |
7659 | PERL_ARGS_ASSERT_CK_EXISTS; | |
7660 | ||
5196be3e MB |
7661 | o = ck_fun(o); |
7662 | if (o->op_flags & OPf_KIDS) { | |
46c461b5 | 7663 | OP * const kid = cUNOPo->op_first; |
afebc493 GS |
7664 | if (kid->op_type == OP_ENTERSUB) { |
7665 | (void) ref(kid, o->op_type); | |
13765c85 DM |
7666 | if (kid->op_type != OP_RV2CV |
7667 | && !(PL_parser && PL_parser->error_count)) | |
afebc493 | 7668 | Perl_croak(aTHX_ "%s argument is not a subroutine name", |
53e06cf0 | 7669 | OP_DESC(o)); |
afebc493 GS |
7670 | o->op_private |= OPpEXISTS_SUB; |
7671 | } | |
7672 | else if (kid->op_type == OP_AELEM) | |
01020589 GS |
7673 | o->op_flags |= OPf_SPECIAL; |
7674 | else if (kid->op_type != OP_HELEM) | |
b0fdf69e | 7675 | Perl_croak(aTHX_ "%s argument is not a HASH or ARRAY element or a subroutine", |
53e06cf0 | 7676 | OP_DESC(o)); |
93c66552 | 7677 | op_null(kid); |
5f05dabc | 7678 | } |
5196be3e | 7679 | return o; |
5f05dabc | 7680 | } |
7681 | ||
79072805 | 7682 | OP * |
cea2e8a9 | 7683 | Perl_ck_rvconst(pTHX_ register OP *o) |
79072805 | 7684 | { |
27da23d5 | 7685 | dVAR; |
0bd48802 | 7686 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
85e6fe83 | 7687 | |
7918f24d NC |
7688 | PERL_ARGS_ASSERT_CK_RVCONST; |
7689 | ||
3280af22 | 7690 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
e26df76a NC |
7691 | if (o->op_type == OP_RV2CV) |
7692 | o->op_private &= ~1; | |
7693 | ||
79072805 | 7694 | if (kid->op_type == OP_CONST) { |
44a8e56a | 7695 | int iscv; |
7696 | GV *gv; | |
504618e9 | 7697 | SV * const kidsv = kid->op_sv; |
44a8e56a | 7698 | |
779c5bc9 GS |
7699 | /* Is it a constant from cv_const_sv()? */ |
7700 | if (SvROK(kidsv) && SvREADONLY(kidsv)) { | |
0bd48802 | 7701 | SV * const rsv = SvRV(kidsv); |
42d0e0b7 | 7702 | const svtype type = SvTYPE(rsv); |
bd61b366 | 7703 | const char *badtype = NULL; |
779c5bc9 GS |
7704 | |
7705 | switch (o->op_type) { | |
7706 | case OP_RV2SV: | |
42d0e0b7 | 7707 | if (type > SVt_PVMG) |
779c5bc9 GS |
7708 | badtype = "a SCALAR"; |
7709 | break; | |
7710 | case OP_RV2AV: | |
42d0e0b7 | 7711 | if (type != SVt_PVAV) |
779c5bc9 GS |
7712 | badtype = "an ARRAY"; |
7713 | break; | |
7714 | case OP_RV2HV: | |
42d0e0b7 | 7715 | if (type != SVt_PVHV) |
779c5bc9 | 7716 | badtype = "a HASH"; |
779c5bc9 GS |
7717 | break; |
7718 | case OP_RV2CV: | |
42d0e0b7 | 7719 | if (type != SVt_PVCV) |
779c5bc9 GS |
7720 | badtype = "a CODE"; |
7721 | break; | |
7722 | } | |
7723 | if (badtype) | |
cea2e8a9 | 7724 | Perl_croak(aTHX_ "Constant is not %s reference", badtype); |
779c5bc9 GS |
7725 | return o; |
7726 | } | |
ce10b5d1 | 7727 | if ((o->op_private & HINT_STRICT_REFS) && (kid->op_private & OPpCONST_BARE)) { |
5f66b61c | 7728 | const char *badthing; |
5dc0d613 | 7729 | switch (o->op_type) { |
44a8e56a | 7730 | case OP_RV2SV: |
7731 | badthing = "a SCALAR"; | |
7732 | break; | |
7733 | case OP_RV2AV: | |
7734 | badthing = "an ARRAY"; | |
7735 | break; | |
7736 | case OP_RV2HV: | |
7737 | badthing = "a HASH"; | |
7738 | break; | |
5f66b61c AL |
7739 | default: |
7740 | badthing = NULL; | |
7741 | break; | |
44a8e56a | 7742 | } |
7743 | if (badthing) | |
1c846c1f | 7744 | Perl_croak(aTHX_ |
95b63a38 | 7745 | "Can't use bareword (\"%"SVf"\") as %s ref while \"strict refs\" in use", |
be2597df | 7746 | SVfARG(kidsv), badthing); |
44a8e56a | 7747 | } |
93233ece CS |
7748 | /* |
7749 | * This is a little tricky. We only want to add the symbol if we | |
7750 | * didn't add it in the lexer. Otherwise we get duplicate strict | |
7751 | * warnings. But if we didn't add it in the lexer, we must at | |
7752 | * least pretend like we wanted to add it even if it existed before, | |
7753 | * or we get possible typo warnings. OPpCONST_ENTERED says | |
7754 | * whether the lexer already added THIS instance of this symbol. | |
7755 | */ | |
5196be3e | 7756 | iscv = (o->op_type == OP_RV2CV) * 2; |
93233ece | 7757 | do { |
7a5fd60d | 7758 | gv = gv_fetchsv(kidsv, |
748a9306 | 7759 | iscv | !(kid->op_private & OPpCONST_ENTERED), |
a0d0e21e LW |
7760 | iscv |
7761 | ? SVt_PVCV | |
11343788 | 7762 | : o->op_type == OP_RV2SV |
a0d0e21e | 7763 | ? SVt_PV |
11343788 | 7764 | : o->op_type == OP_RV2AV |
a0d0e21e | 7765 | ? SVt_PVAV |
11343788 | 7766 | : o->op_type == OP_RV2HV |
a0d0e21e LW |
7767 | ? SVt_PVHV |
7768 | : SVt_PVGV); | |
93233ece CS |
7769 | } while (!gv && !(kid->op_private & OPpCONST_ENTERED) && !iscv++); |
7770 | if (gv) { | |
7771 | kid->op_type = OP_GV; | |
7772 | SvREFCNT_dec(kid->op_sv); | |
350de78d | 7773 | #ifdef USE_ITHREADS |
638eceb6 | 7774 | /* XXX hack: dependence on sizeof(PADOP) <= sizeof(SVOP) */ |
350de78d | 7775 | kPADOP->op_padix = pad_alloc(OP_GV, SVs_PADTMP); |
dd2155a4 | 7776 | SvREFCNT_dec(PAD_SVl(kPADOP->op_padix)); |
743e66e6 | 7777 | GvIN_PAD_on(gv); |
ad64d0ec | 7778 | PAD_SETSV(kPADOP->op_padix, MUTABLE_SV(SvREFCNT_inc_simple_NN(gv))); |
350de78d | 7779 | #else |
b37c2d43 | 7780 | kid->op_sv = SvREFCNT_inc_simple_NN(gv); |
350de78d | 7781 | #endif |
23f1ca44 | 7782 | kid->op_private = 0; |
76cd736e | 7783 | kid->op_ppaddr = PL_ppaddr[OP_GV]; |
2acc3314 FC |
7784 | /* FAKE globs in the symbol table cause weird bugs (#77810) */ |
7785 | SvFAKE_off(gv); | |
a0d0e21e | 7786 | } |
79072805 | 7787 | } |
11343788 | 7788 | return o; |
79072805 LW |
7789 | } |
7790 | ||
7791 | OP * | |
cea2e8a9 | 7792 | Perl_ck_ftst(pTHX_ OP *o) |
79072805 | 7793 | { |
27da23d5 | 7794 | dVAR; |
6867be6d | 7795 | const I32 type = o->op_type; |
79072805 | 7796 | |
7918f24d NC |
7797 | PERL_ARGS_ASSERT_CK_FTST; |
7798 | ||
d0dca557 | 7799 | if (o->op_flags & OPf_REF) { |
6f207bd3 | 7800 | NOOP; |
d0dca557 JD |
7801 | } |
7802 | else if (o->op_flags & OPf_KIDS && cUNOPo->op_first->op_type != OP_STUB) { | |
551405c4 | 7803 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
1496a290 | 7804 | const OPCODE kidtype = kid->op_type; |
79072805 | 7805 | |
1496a290 | 7806 | if (kidtype == OP_CONST && (kid->op_private & OPpCONST_BARE)) { |
551405c4 | 7807 | OP * const newop = newGVOP(type, OPf_REF, |
f776e3cd | 7808 | gv_fetchsv(kid->op_sv, GV_ADD, SVt_PVIO)); |
eb8433b7 NC |
7809 | #ifdef PERL_MAD |
7810 | op_getmad(o,newop,'O'); | |
7811 | #else | |
11343788 | 7812 | op_free(o); |
eb8433b7 | 7813 | #endif |
1d866c12 | 7814 | return newop; |
79072805 | 7815 | } |
6ecf81d6 | 7816 | if ((PL_hints & HINT_FILETEST_ACCESS) && OP_IS_FILETEST_ACCESS(o->op_type)) |
1af34c76 | 7817 | o->op_private |= OPpFT_ACCESS; |
ef69c8fc | 7818 | if (PL_check[kidtype] == Perl_ck_ftst |
bbd91306 | 7819 | && kidtype != OP_STAT && kidtype != OP_LSTAT) { |
fbb0b3b3 | 7820 | o->op_private |= OPpFT_STACKED; |
bbd91306 | 7821 | kid->op_private |= OPpFT_STACKING; |
8db8f6b6 FC |
7822 | if (kidtype == OP_FTTTY && ( |
7823 | !(kid->op_private & OPpFT_STACKED) | |
7824 | || kid->op_private & OPpFT_AFTER_t | |
7825 | )) | |
7826 | o->op_private |= OPpFT_AFTER_t; | |
bbd91306 | 7827 | } |
79072805 LW |
7828 | } |
7829 | else { | |
eb8433b7 | 7830 | #ifdef PERL_MAD |
1d866c12 | 7831 | OP* const oldo = o; |
eb8433b7 | 7832 | #else |
11343788 | 7833 | op_free(o); |
eb8433b7 | 7834 | #endif |
79072805 | 7835 | if (type == OP_FTTTY) |
8fde6460 | 7836 | o = newGVOP(type, OPf_REF, PL_stdingv); |
79072805 | 7837 | else |
d0dca557 | 7838 | o = newUNOP(type, 0, newDEFSVOP()); |
eb8433b7 | 7839 | op_getmad(oldo,o,'O'); |
79072805 | 7840 | } |
11343788 | 7841 | return o; |
79072805 LW |
7842 | } |
7843 | ||
7844 | OP * | |
cea2e8a9 | 7845 | Perl_ck_fun(pTHX_ OP *o) |
79072805 | 7846 | { |
97aff369 | 7847 | dVAR; |
6867be6d | 7848 | const int type = o->op_type; |
22c35a8c | 7849 | register I32 oa = PL_opargs[type] >> OASHIFT; |
aeea060c | 7850 | |
7918f24d NC |
7851 | PERL_ARGS_ASSERT_CK_FUN; |
7852 | ||
11343788 | 7853 | if (o->op_flags & OPf_STACKED) { |
79072805 LW |
7854 | if ((oa & OA_OPTIONAL) && (oa >> 4) && !((oa >> 4) & OA_OPTIONAL)) |
7855 | oa &= ~OA_OPTIONAL; | |
7856 | else | |
11343788 | 7857 | return no_fh_allowed(o); |
79072805 LW |
7858 | } |
7859 | ||
11343788 | 7860 | if (o->op_flags & OPf_KIDS) { |
6867be6d AL |
7861 | OP **tokid = &cLISTOPo->op_first; |
7862 | register OP *kid = cLISTOPo->op_first; | |
7863 | OP *sibl; | |
7864 | I32 numargs = 0; | |
ea5703f4 | 7865 | bool seen_optional = FALSE; |
6867be6d | 7866 | |
8990e307 | 7867 | if (kid->op_type == OP_PUSHMARK || |
155aba94 | 7868 | (kid->op_type == OP_NULL && kid->op_targ == OP_PUSHMARK)) |
8990e307 | 7869 | { |
79072805 LW |
7870 | tokid = &kid->op_sibling; |
7871 | kid = kid->op_sibling; | |
7872 | } | |
f6a16869 FC |
7873 | if (kid && kid->op_type == OP_COREARGS) { |
7874 | bool optional = FALSE; | |
7875 | while (oa) { | |
7876 | numargs++; | |
7877 | if (oa & OA_OPTIONAL) optional = TRUE; | |
7878 | oa = oa >> 4; | |
7879 | } | |
7880 | if (optional) o->op_private |= numargs; | |
7881 | return o; | |
7882 | } | |
79072805 | 7883 | |
ea5703f4 | 7884 | while (oa) { |
72ec8a82 | 7885 | if (oa & OA_OPTIONAL || (oa & 7) == OA_LIST) { |
ea5703f4 FC |
7886 | if (!kid && !seen_optional && PL_opargs[type] & OA_DEFGV) |
7887 | *tokid = kid = newDEFSVOP(); | |
7888 | seen_optional = TRUE; | |
7889 | } | |
7890 | if (!kid) break; | |
7891 | ||
79072805 LW |
7892 | numargs++; |
7893 | sibl = kid->op_sibling; | |
eb8433b7 NC |
7894 | #ifdef PERL_MAD |
7895 | if (!sibl && kid->op_type == OP_STUB) { | |
7896 | numargs--; | |
7897 | break; | |
7898 | } | |
7899 | #endif | |
79072805 LW |
7900 | switch (oa & 7) { |
7901 | case OA_SCALAR: | |
62c18ce2 GS |
7902 | /* list seen where single (scalar) arg expected? */ |
7903 | if (numargs == 1 && !(oa >> 4) | |
7904 | && kid->op_type == OP_LIST && type != OP_SCALAR) | |
7905 | { | |
ce16c625 | 7906 | return too_many_arguments_pv(o,PL_op_desc[type], 0); |
62c18ce2 | 7907 | } |
79072805 LW |
7908 | scalar(kid); |
7909 | break; | |
7910 | case OA_LIST: | |
7911 | if (oa < 16) { | |
7912 | kid = 0; | |
7913 | continue; | |
7914 | } | |
7915 | else | |
7916 | list(kid); | |
7917 | break; | |
7918 | case OA_AVREF: | |
936edb8b | 7919 | if ((type == OP_PUSH || type == OP_UNSHIFT) |
a2a5de95 NC |
7920 | && !kid->op_sibling) |
7921 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), | |
7922 | "Useless use of %s with no values", | |
7923 | PL_op_desc[type]); | |
b2ffa427 | 7924 | |
79072805 | 7925 | if (kid->op_type == OP_CONST && |
62c18ce2 GS |
7926 | (kid->op_private & OPpCONST_BARE)) |
7927 | { | |
551405c4 | 7928 | OP * const newop = newAVREF(newGVOP(OP_GV, 0, |
f776e3cd | 7929 | gv_fetchsv(((SVOP*)kid)->op_sv, GV_ADD, SVt_PVAV) )); |
d1d15184 | 7930 | Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED), |
a2a5de95 NC |
7931 | "Array @%"SVf" missing the @ in argument %"IVdf" of %s()", |
7932 | SVfARG(((SVOP*)kid)->op_sv), (IV)numargs, PL_op_desc[type]); | |
eb8433b7 NC |
7933 | #ifdef PERL_MAD |
7934 | op_getmad(kid,newop,'K'); | |
7935 | #else | |
79072805 | 7936 | op_free(kid); |
eb8433b7 | 7937 | #endif |
79072805 LW |
7938 | kid = newop; |
7939 | kid->op_sibling = sibl; | |
7940 | *tokid = kid; | |
7941 | } | |
d4fc4415 FC |
7942 | else if (kid->op_type == OP_CONST |
7943 | && ( !SvROK(cSVOPx_sv(kid)) | |
7944 | || SvTYPE(SvRV(cSVOPx_sv(kid))) != SVt_PVAV ) | |
7945 | ) | |
ce16c625 | 7946 | bad_type_pv(numargs, "array", PL_op_desc[type], 0, kid); |
d4fc4415 FC |
7947 | /* Defer checks to run-time if we have a scalar arg */ |
7948 | if (kid->op_type == OP_RV2AV || kid->op_type == OP_PADAV) | |
7949 | op_lvalue(kid, type); | |
7950 | else scalar(kid); | |
79072805 LW |
7951 | break; |
7952 | case OA_HVREF: | |
7953 | if (kid->op_type == OP_CONST && | |
62c18ce2 GS |
7954 | (kid->op_private & OPpCONST_BARE)) |
7955 | { | |
551405c4 | 7956 | OP * const newop = newHVREF(newGVOP(OP_GV, 0, |
f776e3cd | 7957 | gv_fetchsv(((SVOP*)kid)->op_sv, GV_ADD, SVt_PVHV) )); |
d1d15184 | 7958 | Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED), |
a2a5de95 NC |
7959 | "Hash %%%"SVf" missing the %% in argument %"IVdf" of %s()", |
7960 | SVfARG(((SVOP*)kid)->op_sv), (IV)numargs, PL_op_desc[type]); | |
eb8433b7 NC |
7961 | #ifdef PERL_MAD |
7962 | op_getmad(kid,newop,'K'); | |
7963 | #else | |
79072805 | 7964 | op_free(kid); |
eb8433b7 | 7965 | #endif |
79072805 LW |
7966 | kid = newop; |
7967 | kid->op_sibling = sibl; | |
7968 | *tokid = kid; | |
7969 | } | |
8990e307 | 7970 | else if (kid->op_type != OP_RV2HV && kid->op_type != OP_PADHV) |
ce16c625 | 7971 | bad_type_pv(numargs, "hash", PL_op_desc[type], 0, kid); |
3ad73efd | 7972 | op_lvalue(kid, type); |
79072805 LW |
7973 | break; |
7974 | case OA_CVREF: | |
7975 | { | |
551405c4 | 7976 | OP * const newop = newUNOP(OP_NULL, 0, kid); |
79072805 | 7977 | kid->op_sibling = 0; |
5983a79d | 7978 | LINKLIST(kid); |
79072805 LW |
7979 | newop->op_next = newop; |
7980 | kid = newop; | |
7981 | kid->op_sibling = sibl; | |
7982 | *tokid = kid; | |
7983 | } | |
7984 | break; | |
7985 | case OA_FILEREF: | |
c340be78 | 7986 | if (kid->op_type != OP_GV && kid->op_type != OP_RV2GV) { |
79072805 | 7987 | if (kid->op_type == OP_CONST && |
62c18ce2 GS |
7988 | (kid->op_private & OPpCONST_BARE)) |
7989 | { | |
0bd48802 | 7990 | OP * const newop = newGVOP(OP_GV, 0, |
f776e3cd | 7991 | gv_fetchsv(((SVOP*)kid)->op_sv, GV_ADD, SVt_PVIO)); |
afbdacea | 7992 | if (!(o->op_private & 1) && /* if not unop */ |
8a996ce8 | 7993 | kid == cLISTOPo->op_last) |
364daeac | 7994 | cLISTOPo->op_last = newop; |
eb8433b7 NC |
7995 | #ifdef PERL_MAD |
7996 | op_getmad(kid,newop,'K'); | |
7997 | #else | |
79072805 | 7998 | op_free(kid); |
eb8433b7 | 7999 | #endif |
79072805 LW |
8000 | kid = newop; |
8001 | } | |
1ea32a52 GS |
8002 | else if (kid->op_type == OP_READLINE) { |
8003 | /* neophyte patrol: open(<FH>), close(<FH>) etc. */ | |
ce16c625 | 8004 | bad_type_pv(numargs, "HANDLE", OP_DESC(o), 0, kid); |
1ea32a52 | 8005 | } |
79072805 | 8006 | else { |
35cd451c | 8007 | I32 flags = OPf_SPECIAL; |
a6c40364 | 8008 | I32 priv = 0; |
2c8ac474 GS |
8009 | PADOFFSET targ = 0; |
8010 | ||
35cd451c | 8011 | /* is this op a FH constructor? */ |
853846ea | 8012 | if (is_handle_constructor(o,numargs)) { |
bd61b366 | 8013 | const char *name = NULL; |
dd2155a4 | 8014 | STRLEN len = 0; |
2dc9cdca | 8015 | U32 name_utf8 = 0; |
885f468a | 8016 | bool want_dollar = TRUE; |
2c8ac474 GS |
8017 | |
8018 | flags = 0; | |
8019 | /* Set a flag to tell rv2gv to vivify | |
853846ea NIS |
8020 | * need to "prove" flag does not mean something |
8021 | * else already - NI-S 1999/05/07 | |
2c8ac474 GS |
8022 | */ |
8023 | priv = OPpDEREF; | |
8024 | if (kid->op_type == OP_PADSV) { | |
f8503592 NC |
8025 | SV *const namesv |
8026 | = PAD_COMPNAME_SV(kid->op_targ); | |
8027 | name = SvPV_const(namesv, len); | |
2dc9cdca | 8028 | name_utf8 = SvUTF8(namesv); |
2c8ac474 GS |
8029 | } |
8030 | else if (kid->op_type == OP_RV2SV | |
8031 | && kUNOP->op_first->op_type == OP_GV) | |
8032 | { | |
0bd48802 | 8033 | GV * const gv = cGVOPx_gv(kUNOP->op_first); |
2c8ac474 GS |
8034 | name = GvNAME(gv); |
8035 | len = GvNAMELEN(gv); | |
2dc9cdca | 8036 | name_utf8 = GvNAMEUTF8(gv) ? SVf_UTF8 : 0; |
2c8ac474 | 8037 | } |
afd1915d GS |
8038 | else if (kid->op_type == OP_AELEM |
8039 | || kid->op_type == OP_HELEM) | |
8040 | { | |
735fec84 | 8041 | OP *firstop; |
551405c4 | 8042 | OP *op = ((BINOP*)kid)->op_first; |
a4fc7abc | 8043 | name = NULL; |
551405c4 | 8044 | if (op) { |
a0714e2c | 8045 | SV *tmpstr = NULL; |
551405c4 | 8046 | const char * const a = |
666ea192 JH |
8047 | kid->op_type == OP_AELEM ? |
8048 | "[]" : "{}"; | |
0c4b0a3f JH |
8049 | if (((op->op_type == OP_RV2AV) || |
8050 | (op->op_type == OP_RV2HV)) && | |
735fec84 RGS |
8051 | (firstop = ((UNOP*)op)->op_first) && |
8052 | (firstop->op_type == OP_GV)) { | |
0c4b0a3f | 8053 | /* packagevar $a[] or $h{} */ |
735fec84 | 8054 | GV * const gv = cGVOPx_gv(firstop); |
0c4b0a3f JH |
8055 | if (gv) |
8056 | tmpstr = | |
8057 | Perl_newSVpvf(aTHX_ | |
8058 | "%s%c...%c", | |
8059 | GvNAME(gv), | |
8060 | a[0], a[1]); | |
8061 | } | |
8062 | else if (op->op_type == OP_PADAV | |
8063 | || op->op_type == OP_PADHV) { | |
8064 | /* lexicalvar $a[] or $h{} */ | |
551405c4 | 8065 | const char * const padname = |
0c4b0a3f JH |
8066 | PAD_COMPNAME_PV(op->op_targ); |
8067 | if (padname) | |
8068 | tmpstr = | |
8069 | Perl_newSVpvf(aTHX_ | |
8070 | "%s%c...%c", | |
8071 | padname + 1, | |
8072 | a[0], a[1]); | |
0c4b0a3f JH |
8073 | } |
8074 | if (tmpstr) { | |
93524f2b | 8075 | name = SvPV_const(tmpstr, len); |
2dc9cdca | 8076 | name_utf8 = SvUTF8(tmpstr); |
0c4b0a3f JH |
8077 | sv_2mortal(tmpstr); |
8078 | } | |
8079 | } | |
8080 | if (!name) { | |
8081 | name = "__ANONIO__"; | |
8082 | len = 10; | |
885f468a | 8083 | want_dollar = FALSE; |
0c4b0a3f | 8084 | } |
3ad73efd | 8085 | op_lvalue(kid, type); |
afd1915d | 8086 | } |
2c8ac474 GS |
8087 | if (name) { |
8088 | SV *namesv; | |
8089 | targ = pad_alloc(OP_RV2GV, SVs_PADTMP); | |
dd2155a4 | 8090 | namesv = PAD_SVl(targ); |
862a34c6 | 8091 | SvUPGRADE(namesv, SVt_PV); |
885f468a | 8092 | if (want_dollar && *name != '$') |
76f68e9b | 8093 | sv_setpvs(namesv, "$"); |
2c8ac474 | 8094 | sv_catpvn(namesv, name, len); |
2dc9cdca | 8095 | if ( name_utf8 ) SvUTF8_on(namesv); |
2c8ac474 | 8096 | } |
853846ea | 8097 | } |
79072805 | 8098 | kid->op_sibling = 0; |
35cd451c | 8099 | kid = newUNOP(OP_RV2GV, flags, scalar(kid)); |
2c8ac474 GS |
8100 | kid->op_targ = targ; |
8101 | kid->op_private |= priv; | |
79072805 LW |
8102 | } |
8103 | kid->op_sibling = sibl; | |
8104 | *tokid = kid; | |
8105 | } | |
8106 | scalar(kid); | |
8107 | break; | |
8108 | case OA_SCALARREF: | |
1efec5ed FC |
8109 | if ((type == OP_UNDEF || type == OP_POS) |
8110 | && numargs == 1 && !(oa >> 4) | |
89c5c07e FC |
8111 | && kid->op_type == OP_LIST) |
8112 | return too_many_arguments_pv(o,PL_op_desc[type], 0); | |
3ad73efd | 8113 | op_lvalue(scalar(kid), type); |
79072805 LW |
8114 | break; |
8115 | } | |
8116 | oa >>= 4; | |
8117 | tokid = &kid->op_sibling; | |
8118 | kid = kid->op_sibling; | |
8119 | } | |
eb8433b7 NC |
8120 | #ifdef PERL_MAD |
8121 | if (kid && kid->op_type != OP_STUB) | |
ce16c625 | 8122 | return too_many_arguments_pv(o,OP_DESC(o), 0); |
eb8433b7 NC |
8123 | o->op_private |= numargs; |
8124 | #else | |
8125 | /* FIXME - should the numargs move as for the PERL_MAD case? */ | |
11343788 | 8126 | o->op_private |= numargs; |
79072805 | 8127 | if (kid) |
ce16c625 | 8128 | return too_many_arguments_pv(o,OP_DESC(o), 0); |
eb8433b7 | 8129 | #endif |
11343788 | 8130 | listkids(o); |
79072805 | 8131 | } |
22c35a8c | 8132 | else if (PL_opargs[type] & OA_DEFGV) { |
c56915e3 | 8133 | #ifdef PERL_MAD |
c7fe699d | 8134 | OP *newop = newUNOP(type, 0, newDEFSVOP()); |
c56915e3 | 8135 | op_getmad(o,newop,'O'); |
c7fe699d | 8136 | return newop; |
c56915e3 | 8137 | #else |
c7fe699d | 8138 | /* Ordering of these two is important to keep f_map.t passing. */ |
11343788 | 8139 | op_free(o); |
c7fe699d | 8140 | return newUNOP(type, 0, newDEFSVOP()); |
c56915e3 | 8141 | #endif |
a0d0e21e LW |
8142 | } |
8143 | ||
79072805 LW |
8144 | if (oa) { |
8145 | while (oa & OA_OPTIONAL) | |
8146 | oa >>= 4; | |
8147 | if (oa && oa != OA_LIST) | |
ce16c625 | 8148 | return too_few_arguments_pv(o,OP_DESC(o), 0); |
79072805 | 8149 | } |
11343788 | 8150 | return o; |
79072805 LW |
8151 | } |
8152 | ||
8153 | OP * | |
cea2e8a9 | 8154 | Perl_ck_glob(pTHX_ OP *o) |
79072805 | 8155 | { |
27da23d5 | 8156 | dVAR; |
fb73857a | 8157 | GV *gv; |
d67594ff | 8158 | const bool core = o->op_flags & OPf_SPECIAL; |
fb73857a | 8159 | |
7918f24d NC |
8160 | PERL_ARGS_ASSERT_CK_GLOB; |
8161 | ||
649da076 | 8162 | o = ck_fun(o); |
1f2bfc8a | 8163 | if ((o->op_flags & OPf_KIDS) && !cLISTOPo->op_first->op_sibling) |
bd31915d | 8164 | op_append_elem(OP_GLOB, o, newDEFSVOP()); /* glob() => glob($_) */ |
fb73857a | 8165 | |
d67594ff FC |
8166 | if (core) gv = NULL; |
8167 | else if (!((gv = gv_fetchpvs("glob", GV_NOTQUAL, SVt_PVCV)) | |
b9f751c0 GS |
8168 | && GvCVu(gv) && GvIMPORTED_CV(gv))) |
8169 | { | |
8113e1cc FC |
8170 | GV * const * const gvp = |
8171 | (GV **)hv_fetchs(PL_globalstash, "glob", FALSE); | |
8172 | gv = gvp ? *gvp : NULL; | |
b9f751c0 | 8173 | } |
b1cb66bf | 8174 | |
b9f751c0 | 8175 | if (gv && GvCVu(gv) && GvIMPORTED_CV(gv)) { |
d1bea3d8 DM |
8176 | /* convert |
8177 | * glob | |
8178 | * \ null - const(wildcard) | |
8179 | * into | |
8180 | * null | |
8181 | * \ enter | |
8182 | * \ list | |
8183 | * \ mark - glob - rv2cv | |
8184 | * | \ gv(CORE::GLOBAL::glob) | |
8185 | * | | |
8186 | * \ null - const(wildcard) - const(ix) | |
8187 | */ | |
8188 | o->op_flags |= OPf_SPECIAL; | |
9426e1a5 | 8189 | o->op_targ = pad_alloc(OP_GLOB, SVs_PADTMP); |
2fcb4757 | 8190 | op_append_elem(OP_GLOB, o, |
80252599 | 8191 | newSVOP(OP_CONST, 0, newSViv(PL_glob_index++))); |
d1bea3d8 | 8192 | o = newLISTOP(OP_LIST, 0, o, NULL); |
1f2bfc8a | 8193 | o = newUNOP(OP_ENTERSUB, OPf_STACKED, |
2fcb4757 | 8194 | op_append_elem(OP_LIST, o, |
1f2bfc8a MB |
8195 | scalar(newUNOP(OP_RV2CV, 0, |
8196 | newGVOP(OP_GV, 0, gv))))); | |
7ae76aaa | 8197 | o = newUNOP(OP_NULL, 0, o); |
d1bea3d8 | 8198 | o->op_targ = OP_GLOB; /* hint at what it used to be: eg in newWHILEOP */ |
d58bf5aa | 8199 | return o; |
b1cb66bf | 8200 | } |
d67594ff | 8201 | else o->op_flags &= ~OPf_SPECIAL; |
39e3b1bc FC |
8202 | #if !defined(PERL_EXTERNAL_GLOB) |
8203 | if (!PL_globhook) { | |
8204 | ENTER; | |
8205 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, | |
8206 | newSVpvs("File::Glob"), NULL, NULL, NULL); | |
8207 | LEAVE; | |
8208 | } | |
8209 | #endif /* !PERL_EXTERNAL_GLOB */ | |
b1cb66bf | 8210 | gv = newGVgen("main"); |
a0d0e21e | 8211 | gv_IOadd(gv); |
d67594ff FC |
8212 | #ifndef PERL_EXTERNAL_GLOB |
8213 | sv_setiv(GvSVn(gv),PL_glob_index++); | |
8214 | #endif | |
2fcb4757 | 8215 | op_append_elem(OP_GLOB, o, newGVOP(OP_GV, 0, gv)); |
11343788 | 8216 | scalarkids(o); |
649da076 | 8217 | return o; |
79072805 LW |
8218 | } |
8219 | ||
8220 | OP * | |
cea2e8a9 | 8221 | Perl_ck_grep(pTHX_ OP *o) |
79072805 | 8222 | { |
27da23d5 | 8223 | dVAR; |
03ca120d | 8224 | LOGOP *gwop = NULL; |
79072805 | 8225 | OP *kid; |
6867be6d | 8226 | const OPCODE type = o->op_type == OP_GREPSTART ? OP_GREPWHILE : OP_MAPWHILE; |
9f7d9405 | 8227 | PADOFFSET offset; |
79072805 | 8228 | |
7918f24d NC |
8229 | PERL_ARGS_ASSERT_CK_GREP; |
8230 | ||
22c35a8c | 8231 | o->op_ppaddr = PL_ppaddr[OP_GREPSTART]; |
13765c85 | 8232 | /* don't allocate gwop here, as we may leak it if PL_parser->error_count > 0 */ |
aeea060c | 8233 | |
11343788 | 8234 | if (o->op_flags & OPf_STACKED) { |
a0d0e21e | 8235 | OP* k; |
11343788 | 8236 | o = ck_sort(o); |
f6435df3 GG |
8237 | kid = cUNOPx(cLISTOPo->op_first->op_sibling)->op_first; |
8238 | if (kid->op_type != OP_SCOPE && kid->op_type != OP_LEAVE) | |
8239 | return no_fh_allowed(o); | |
8240 | for (k = kid; k; k = k->op_next) { | |
a0d0e21e LW |
8241 | kid = k; |
8242 | } | |
03ca120d | 8243 | NewOp(1101, gwop, 1, LOGOP); |
a0d0e21e | 8244 | kid->op_next = (OP*)gwop; |
11343788 | 8245 | o->op_flags &= ~OPf_STACKED; |
93a17b20 | 8246 | } |
11343788 | 8247 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e LW |
8248 | if (type == OP_MAPWHILE) |
8249 | list(kid); | |
8250 | else | |
8251 | scalar(kid); | |
11343788 | 8252 | o = ck_fun(o); |
13765c85 | 8253 | if (PL_parser && PL_parser->error_count) |
11343788 | 8254 | return o; |
aeea060c | 8255 | kid = cLISTOPo->op_first->op_sibling; |
79072805 | 8256 | if (kid->op_type != OP_NULL) |
5637ef5b | 8257 | Perl_croak(aTHX_ "panic: ck_grep, type=%u", (unsigned) kid->op_type); |
79072805 LW |
8258 | kid = kUNOP->op_first; |
8259 | ||
03ca120d MHM |
8260 | if (!gwop) |
8261 | NewOp(1101, gwop, 1, LOGOP); | |
a0d0e21e | 8262 | gwop->op_type = type; |
22c35a8c | 8263 | gwop->op_ppaddr = PL_ppaddr[type]; |
11343788 | 8264 | gwop->op_first = listkids(o); |
79072805 | 8265 | gwop->op_flags |= OPf_KIDS; |
79072805 | 8266 | gwop->op_other = LINKLIST(kid); |
79072805 | 8267 | kid->op_next = (OP*)gwop; |
cc76b5cc | 8268 | offset = pad_findmy_pvs("$_", 0); |
00b1698f | 8269 | if (offset == NOT_IN_PAD || PAD_COMPNAME_FLAGS_isOUR(offset)) { |
59f00321 RGS |
8270 | o->op_private = gwop->op_private = 0; |
8271 | gwop->op_targ = pad_alloc(type, SVs_PADTMP); | |
8272 | } | |
8273 | else { | |
8274 | o->op_private = gwop->op_private = OPpGREP_LEX; | |
8275 | gwop->op_targ = o->op_targ = offset; | |
8276 | } | |
79072805 | 8277 | |
11343788 | 8278 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e | 8279 | if (!kid || !kid->op_sibling) |
ce16c625 | 8280 | return too_few_arguments_pv(o,OP_DESC(o), 0); |
a0d0e21e | 8281 | for (kid = kid->op_sibling; kid; kid = kid->op_sibling) |
3ad73efd | 8282 | op_lvalue(kid, OP_GREPSTART); |
a0d0e21e | 8283 | |
79072805 LW |
8284 | return (OP*)gwop; |
8285 | } | |
8286 | ||
8287 | OP * | |
cea2e8a9 | 8288 | Perl_ck_index(pTHX_ OP *o) |
79072805 | 8289 | { |
7918f24d NC |
8290 | PERL_ARGS_ASSERT_CK_INDEX; |
8291 | ||
11343788 MB |
8292 | if (o->op_flags & OPf_KIDS) { |
8293 | OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
0b71040e LW |
8294 | if (kid) |
8295 | kid = kid->op_sibling; /* get past "big" */ | |
3b36395d DM |
8296 | if (kid && kid->op_type == OP_CONST) { |
8297 | const bool save_taint = PL_tainted; | |
2779dcf1 | 8298 | fbm_compile(((SVOP*)kid)->op_sv, 0); |
3b36395d DM |
8299 | PL_tainted = save_taint; |
8300 | } | |
79072805 | 8301 | } |
11343788 | 8302 | return ck_fun(o); |
79072805 LW |
8303 | } |
8304 | ||
8305 | OP * | |
cea2e8a9 | 8306 | Perl_ck_lfun(pTHX_ OP *o) |
79072805 | 8307 | { |
6867be6d | 8308 | const OPCODE type = o->op_type; |
7918f24d NC |
8309 | |
8310 | PERL_ARGS_ASSERT_CK_LFUN; | |
8311 | ||
5dc0d613 | 8312 | return modkids(ck_fun(o), type); |
79072805 LW |
8313 | } |
8314 | ||
8315 | OP * | |
cea2e8a9 | 8316 | Perl_ck_defined(pTHX_ OP *o) /* 19990527 MJD */ |
69794302 | 8317 | { |
7918f24d NC |
8318 | PERL_ARGS_ASSERT_CK_DEFINED; |
8319 | ||
a2a5de95 | 8320 | if ((o->op_flags & OPf_KIDS)) { |
d0334bed GS |
8321 | switch (cUNOPo->op_first->op_type) { |
8322 | case OP_RV2AV: | |
8323 | case OP_PADAV: | |
8324 | case OP_AASSIGN: /* Is this a good idea? */ | |
d1d15184 | 8325 | Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED), |
a2a5de95 | 8326 | "defined(@array) is deprecated"); |
d1d15184 | 8327 | Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED), |
a2a5de95 | 8328 | "\t(Maybe you should just omit the defined()?)\n"); |
69794302 | 8329 | break; |
d0334bed GS |
8330 | case OP_RV2HV: |
8331 | case OP_PADHV: | |
d1d15184 | 8332 | Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED), |
a2a5de95 | 8333 | "defined(%%hash) is deprecated"); |
d1d15184 | 8334 | Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED), |
a2a5de95 | 8335 | "\t(Maybe you should just omit the defined()?)\n"); |
d0334bed GS |
8336 | break; |
8337 | default: | |
8338 | /* no warning */ | |
8339 | break; | |
8340 | } | |
69794302 MJD |
8341 | } |
8342 | return ck_rfun(o); | |
8343 | } | |
8344 | ||
8345 | OP * | |
e4b7ebf3 RGS |
8346 | Perl_ck_readline(pTHX_ OP *o) |
8347 | { | |
7918f24d NC |
8348 | PERL_ARGS_ASSERT_CK_READLINE; |
8349 | ||
b73e5385 FC |
8350 | if (o->op_flags & OPf_KIDS) { |
8351 | OP *kid = cLISTOPo->op_first; | |
8352 | if (kid->op_type == OP_RV2GV) kid->op_private |= OPpALLOW_FAKE; | |
8353 | } | |
8354 | else { | |
e4b7ebf3 RGS |
8355 | OP * const newop |
8356 | = newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, PL_argvgv)); | |
8357 | #ifdef PERL_MAD | |
8358 | op_getmad(o,newop,'O'); | |
8359 | #else | |
8360 | op_free(o); | |
8361 | #endif | |
8362 | return newop; | |
8363 | } | |
8364 | return o; | |
8365 | } | |
8366 | ||
8367 | OP * | |
cea2e8a9 | 8368 | Perl_ck_rfun(pTHX_ OP *o) |
8990e307 | 8369 | { |
6867be6d | 8370 | const OPCODE type = o->op_type; |
7918f24d NC |
8371 | |
8372 | PERL_ARGS_ASSERT_CK_RFUN; | |
8373 | ||
5dc0d613 | 8374 | return refkids(ck_fun(o), type); |
8990e307 LW |
8375 | } |
8376 | ||
8377 | OP * | |
cea2e8a9 | 8378 | Perl_ck_listiob(pTHX_ OP *o) |
79072805 LW |
8379 | { |
8380 | register OP *kid; | |
aeea060c | 8381 | |
7918f24d NC |
8382 | PERL_ARGS_ASSERT_CK_LISTIOB; |
8383 | ||
11343788 | 8384 | kid = cLISTOPo->op_first; |
79072805 | 8385 | if (!kid) { |
11343788 MB |
8386 | o = force_list(o); |
8387 | kid = cLISTOPo->op_first; | |
79072805 LW |
8388 | } |
8389 | if (kid->op_type == OP_PUSHMARK) | |
8390 | kid = kid->op_sibling; | |
11343788 | 8391 | if (kid && o->op_flags & OPf_STACKED) |
79072805 LW |
8392 | kid = kid->op_sibling; |
8393 | else if (kid && !kid->op_sibling) { /* print HANDLE; */ | |
8394 | if (kid->op_type == OP_CONST && kid->op_private & OPpCONST_BARE) { | |
11343788 | 8395 | o->op_flags |= OPf_STACKED; /* make it a filehandle */ |
748a9306 | 8396 | kid = newUNOP(OP_RV2GV, OPf_REF, scalar(kid)); |
11343788 MB |
8397 | cLISTOPo->op_first->op_sibling = kid; |
8398 | cLISTOPo->op_last = kid; | |
79072805 LW |
8399 | kid = kid->op_sibling; |
8400 | } | |
8401 | } | |
b2ffa427 | 8402 | |
79072805 | 8403 | if (!kid) |
2fcb4757 | 8404 | op_append_elem(o->op_type, o, newDEFSVOP()); |
79072805 | 8405 | |
69974ce6 | 8406 | if (o->op_type == OP_PRTF) return modkids(listkids(o), OP_PRTF); |
2de3dbcc | 8407 | return listkids(o); |
bbce6d69 | 8408 | } |
8409 | ||
8410 | OP * | |
0d863452 RH |
8411 | Perl_ck_smartmatch(pTHX_ OP *o) |
8412 | { | |
97aff369 | 8413 | dVAR; |
a4e74480 | 8414 | PERL_ARGS_ASSERT_CK_SMARTMATCH; |
0d863452 RH |
8415 | if (0 == (o->op_flags & OPf_SPECIAL)) { |
8416 | OP *first = cBINOPo->op_first; | |
8417 | OP *second = first->op_sibling; | |
8418 | ||
8419 | /* Implicitly take a reference to an array or hash */ | |
5f66b61c | 8420 | first->op_sibling = NULL; |
0d863452 RH |
8421 | first = cBINOPo->op_first = ref_array_or_hash(first); |
8422 | second = first->op_sibling = ref_array_or_hash(second); | |
8423 | ||
8424 | /* Implicitly take a reference to a regular expression */ | |
8425 | if (first->op_type == OP_MATCH) { | |
8426 | first->op_type = OP_QR; | |
8427 | first->op_ppaddr = PL_ppaddr[OP_QR]; | |
8428 | } | |
8429 | if (second->op_type == OP_MATCH) { | |
8430 | second->op_type = OP_QR; | |
8431 | second->op_ppaddr = PL_ppaddr[OP_QR]; | |
8432 | } | |
8433 | } | |
8434 | ||
8435 | return o; | |
8436 | } | |
8437 | ||
8438 | ||
8439 | OP * | |
b162f9ea IZ |
8440 | Perl_ck_sassign(pTHX_ OP *o) |
8441 | { | |
3088bf26 | 8442 | dVAR; |
1496a290 | 8443 | OP * const kid = cLISTOPo->op_first; |
7918f24d NC |
8444 | |
8445 | PERL_ARGS_ASSERT_CK_SASSIGN; | |
8446 | ||
b162f9ea IZ |
8447 | /* has a disposable target? */ |
8448 | if ((PL_opargs[kid->op_type] & OA_TARGLEX) | |
6b66af17 GS |
8449 | && !(kid->op_flags & OPf_STACKED) |
8450 | /* Cannot steal the second time! */ | |
1b438339 GG |
8451 | && !(kid->op_private & OPpTARGET_MY) |
8452 | /* Keep the full thing for madskills */ | |
8453 | && !PL_madskills | |
8454 | ) | |
b162f9ea | 8455 | { |
551405c4 | 8456 | OP * const kkid = kid->op_sibling; |
b162f9ea IZ |
8457 | |
8458 | /* Can just relocate the target. */ | |
2c2d71f5 JH |
8459 | if (kkid && kkid->op_type == OP_PADSV |
8460 | && !(kkid->op_private & OPpLVAL_INTRO)) | |
8461 | { | |
b162f9ea | 8462 | kid->op_targ = kkid->op_targ; |
743e66e6 | 8463 | kkid->op_targ = 0; |
b162f9ea IZ |
8464 | /* Now we do not need PADSV and SASSIGN. */ |
8465 | kid->op_sibling = o->op_sibling; /* NULL */ | |
8466 | cLISTOPo->op_first = NULL; | |
8467 | op_free(o); | |
8468 | op_free(kkid); | |
8469 | kid->op_private |= OPpTARGET_MY; /* Used for context settings */ | |
8470 | return kid; | |
8471 | } | |
8472 | } | |
c5917253 NC |
8473 | if (kid->op_sibling) { |
8474 | OP *kkid = kid->op_sibling; | |
a1fba7eb FC |
8475 | /* For state variable assignment, kkid is a list op whose op_last |
8476 | is a padsv. */ | |
8477 | if ((kkid->op_type == OP_PADSV || | |
8478 | (kkid->op_type == OP_LIST && | |
8479 | (kkid = cLISTOPx(kkid)->op_last)->op_type == OP_PADSV | |
8480 | ) | |
8481 | ) | |
c5917253 NC |
8482 | && (kkid->op_private & OPpLVAL_INTRO) |
8483 | && SvPAD_STATE(*av_fetch(PL_comppad_name, kkid->op_targ, FALSE))) { | |
8484 | const PADOFFSET target = kkid->op_targ; | |
8485 | OP *const other = newOP(OP_PADSV, | |
8486 | kkid->op_flags | |
8487 | | ((kkid->op_private & ~OPpLVAL_INTRO) << 8)); | |
8488 | OP *const first = newOP(OP_NULL, 0); | |
8489 | OP *const nullop = newCONDOP(0, first, o, other); | |
8490 | OP *const condop = first->op_next; | |
8491 | /* hijacking PADSTALE for uninitialized state variables */ | |
8492 | SvPADSTALE_on(PAD_SVl(target)); | |
8493 | ||
8494 | condop->op_type = OP_ONCE; | |
8495 | condop->op_ppaddr = PL_ppaddr[OP_ONCE]; | |
8496 | condop->op_targ = target; | |
8497 | other->op_targ = target; | |
8498 | ||
95562366 | 8499 | /* Because we change the type of the op here, we will skip the |
486ec47a | 8500 | assignment binop->op_last = binop->op_first->op_sibling; at the |
95562366 NC |
8501 | end of Perl_newBINOP(). So need to do it here. */ |
8502 | cBINOPo->op_last = cBINOPo->op_first->op_sibling; | |
8503 | ||
c5917253 NC |
8504 | return nullop; |
8505 | } | |
8506 | } | |
b162f9ea IZ |
8507 | return o; |
8508 | } | |
8509 | ||
8510 | OP * | |
cea2e8a9 | 8511 | Perl_ck_match(pTHX_ OP *o) |
79072805 | 8512 | { |
97aff369 | 8513 | dVAR; |
7918f24d NC |
8514 | |
8515 | PERL_ARGS_ASSERT_CK_MATCH; | |
8516 | ||
0d863452 | 8517 | if (o->op_type != OP_QR && PL_compcv) { |
cc76b5cc | 8518 | const PADOFFSET offset = pad_findmy_pvs("$_", 0); |
00b1698f | 8519 | if (offset != NOT_IN_PAD && !(PAD_COMPNAME_FLAGS_isOUR(offset))) { |
59f00321 RGS |
8520 | o->op_targ = offset; |
8521 | o->op_private |= OPpTARGET_MY; | |
8522 | } | |
8523 | } | |
8524 | if (o->op_type == OP_MATCH || o->op_type == OP_QR) | |
8525 | o->op_private |= OPpRUNTIME; | |
11343788 | 8526 | return o; |
79072805 LW |
8527 | } |
8528 | ||
8529 | OP * | |
f5d5a27c CS |
8530 | Perl_ck_method(pTHX_ OP *o) |
8531 | { | |
551405c4 | 8532 | OP * const kid = cUNOPo->op_first; |
7918f24d NC |
8533 | |
8534 | PERL_ARGS_ASSERT_CK_METHOD; | |
8535 | ||
f5d5a27c CS |
8536 | if (kid->op_type == OP_CONST) { |
8537 | SV* sv = kSVOP->op_sv; | |
a4fc7abc AL |
8538 | const char * const method = SvPVX_const(sv); |
8539 | if (!(strchr(method, ':') || strchr(method, '\''))) { | |
f5d5a27c | 8540 | OP *cmop; |
1c846c1f | 8541 | if (!SvREADONLY(sv) || !SvFAKE(sv)) { |
c60dbbc3 | 8542 | sv = newSVpvn_share(method, SvUTF8(sv) ? -(I32)SvCUR(sv) : (I32)SvCUR(sv), 0); |
1c846c1f NIS |
8543 | } |
8544 | else { | |
a0714e2c | 8545 | kSVOP->op_sv = NULL; |
1c846c1f | 8546 | } |
f5d5a27c | 8547 | cmop = newSVOP(OP_METHOD_NAMED, 0, sv); |
eb8433b7 NC |
8548 | #ifdef PERL_MAD |
8549 | op_getmad(o,cmop,'O'); | |
8550 | #else | |
f5d5a27c | 8551 | op_free(o); |
eb8433b7 | 8552 | #endif |
f5d5a27c CS |
8553 | return cmop; |
8554 | } | |
8555 | } | |
8556 | return o; | |
8557 | } | |
8558 | ||
8559 | OP * | |
cea2e8a9 | 8560 | Perl_ck_null(pTHX_ OP *o) |
79072805 | 8561 | { |
7918f24d | 8562 | PERL_ARGS_ASSERT_CK_NULL; |
96a5add6 | 8563 | PERL_UNUSED_CONTEXT; |
11343788 | 8564 | return o; |
79072805 LW |
8565 | } |
8566 | ||
8567 | OP * | |
16fe6d59 GS |
8568 | Perl_ck_open(pTHX_ OP *o) |
8569 | { | |
97aff369 | 8570 | dVAR; |
551405c4 | 8571 | HV * const table = GvHV(PL_hintgv); |
7918f24d NC |
8572 | |
8573 | PERL_ARGS_ASSERT_CK_OPEN; | |
8574 | ||
16fe6d59 | 8575 | if (table) { |
a4fc7abc | 8576 | SV **svp = hv_fetchs(table, "open_IN", FALSE); |
16fe6d59 | 8577 | if (svp && *svp) { |
a79b25b7 VP |
8578 | STRLEN len = 0; |
8579 | const char *d = SvPV_const(*svp, len); | |
8580 | const I32 mode = mode_from_discipline(d, len); | |
16fe6d59 GS |
8581 | if (mode & O_BINARY) |
8582 | o->op_private |= OPpOPEN_IN_RAW; | |
8583 | else if (mode & O_TEXT) | |
8584 | o->op_private |= OPpOPEN_IN_CRLF; | |
8585 | } | |
8586 | ||
a4fc7abc | 8587 | svp = hv_fetchs(table, "open_OUT", FALSE); |
16fe6d59 | 8588 | if (svp && *svp) { |
a79b25b7 VP |
8589 | STRLEN len = 0; |
8590 | const char *d = SvPV_const(*svp, len); | |
8591 | const I32 mode = mode_from_discipline(d, len); | |
16fe6d59 GS |
8592 | if (mode & O_BINARY) |
8593 | o->op_private |= OPpOPEN_OUT_RAW; | |
8594 | else if (mode & O_TEXT) | |
8595 | o->op_private |= OPpOPEN_OUT_CRLF; | |
8596 | } | |
8597 | } | |
8d7403e6 RGS |
8598 | if (o->op_type == OP_BACKTICK) { |
8599 | if (!(o->op_flags & OPf_KIDS)) { | |
e4b7ebf3 RGS |
8600 | OP * const newop = newUNOP(OP_BACKTICK, 0, newDEFSVOP()); |
8601 | #ifdef PERL_MAD | |
8602 | op_getmad(o,newop,'O'); | |
8603 | #else | |
8d7403e6 | 8604 | op_free(o); |
e4b7ebf3 RGS |
8605 | #endif |
8606 | return newop; | |
8d7403e6 | 8607 | } |
16fe6d59 | 8608 | return o; |
8d7403e6 | 8609 | } |
3b82e551 JH |
8610 | { |
8611 | /* In case of three-arg dup open remove strictness | |
8612 | * from the last arg if it is a bareword. */ | |
551405c4 AL |
8613 | OP * const first = cLISTOPx(o)->op_first; /* The pushmark. */ |
8614 | OP * const last = cLISTOPx(o)->op_last; /* The bareword. */ | |
3b82e551 | 8615 | OP *oa; |
b15aece3 | 8616 | const char *mode; |
3b82e551 JH |
8617 | |
8618 | if ((last->op_type == OP_CONST) && /* The bareword. */ | |
8619 | (last->op_private & OPpCONST_BARE) && | |
8620 | (last->op_private & OPpCONST_STRICT) && | |
8621 | (oa = first->op_sibling) && /* The fh. */ | |
8622 | (oa = oa->op_sibling) && /* The mode. */ | |
ea1d064a | 8623 | (oa->op_type == OP_CONST) && |
3b82e551 | 8624 | SvPOK(((SVOP*)oa)->op_sv) && |
b15aece3 | 8625 | (mode = SvPVX_const(((SVOP*)oa)->op_sv)) && |
3b82e551 JH |
8626 | mode[0] == '>' && mode[1] == '&' && /* A dup open. */ |
8627 | (last == oa->op_sibling)) /* The bareword. */ | |
8628 | last->op_private &= ~OPpCONST_STRICT; | |
8629 | } | |
16fe6d59 GS |
8630 | return ck_fun(o); |
8631 | } | |
8632 | ||
8633 | OP * | |
cea2e8a9 | 8634 | Perl_ck_repeat(pTHX_ OP *o) |
79072805 | 8635 | { |
7918f24d NC |
8636 | PERL_ARGS_ASSERT_CK_REPEAT; |
8637 | ||
11343788 MB |
8638 | if (cBINOPo->op_first->op_flags & OPf_PARENS) { |
8639 | o->op_private |= OPpREPEAT_DOLIST; | |
8640 | cBINOPo->op_first = force_list(cBINOPo->op_first); | |
79072805 LW |
8641 | } |
8642 | else | |
11343788 MB |
8643 | scalar(o); |
8644 | return o; | |
79072805 LW |
8645 | } |
8646 | ||
8647 | OP * | |
cea2e8a9 | 8648 | Perl_ck_require(pTHX_ OP *o) |
8990e307 | 8649 | { |
97aff369 | 8650 | dVAR; |
a0714e2c | 8651 | GV* gv = NULL; |
ec4ab249 | 8652 | |
7918f24d NC |
8653 | PERL_ARGS_ASSERT_CK_REQUIRE; |
8654 | ||
11343788 | 8655 | if (o->op_flags & OPf_KIDS) { /* Shall we supply missing .pm? */ |
551405c4 | 8656 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
8990e307 LW |
8657 | |
8658 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
551405c4 | 8659 | SV * const sv = kid->op_sv; |
5c144d81 | 8660 | U32 was_readonly = SvREADONLY(sv); |
8990e307 | 8661 | char *s; |
cfff9797 NC |
8662 | STRLEN len; |
8663 | const char *end; | |
5c144d81 NC |
8664 | |
8665 | if (was_readonly) { | |
8666 | if (SvFAKE(sv)) { | |
8667 | sv_force_normal_flags(sv, 0); | |
8668 | assert(!SvREADONLY(sv)); | |
8669 | was_readonly = 0; | |
8670 | } else { | |
8671 | SvREADONLY_off(sv); | |
8672 | } | |
8673 | } | |
8674 | ||
cfff9797 NC |
8675 | s = SvPVX(sv); |
8676 | len = SvCUR(sv); | |
8677 | end = s + len; | |
8678 | for (; s < end; s++) { | |
a0d0e21e LW |
8679 | if (*s == ':' && s[1] == ':') { |
8680 | *s = '/'; | |
5c6b2528 | 8681 | Move(s+2, s+1, end - s - 1, char); |
cfff9797 | 8682 | --end; |
a0d0e21e | 8683 | } |
8990e307 | 8684 | } |
cfff9797 | 8685 | SvEND_set(sv, end); |
396482e1 | 8686 | sv_catpvs(sv, ".pm"); |
5c144d81 | 8687 | SvFLAGS(sv) |= was_readonly; |
8990e307 LW |
8688 | } |
8689 | } | |
ec4ab249 | 8690 | |
a72a1c8b RGS |
8691 | if (!(o->op_flags & OPf_SPECIAL)) { /* Wasn't written as CORE::require */ |
8692 | /* handle override, if any */ | |
fafc274c | 8693 | gv = gv_fetchpvs("require", GV_NOTQUAL, SVt_PVCV); |
d6a985f2 | 8694 | if (!(gv && GvCVu(gv) && GvIMPORTED_CV(gv))) { |
a4fc7abc | 8695 | GV * const * const gvp = (GV**)hv_fetchs(PL_globalstash, "require", FALSE); |
a0714e2c | 8696 | gv = gvp ? *gvp : NULL; |
d6a985f2 | 8697 | } |
a72a1c8b | 8698 | } |
ec4ab249 | 8699 | |
b9f751c0 | 8700 | if (gv && GvCVu(gv) && GvIMPORTED_CV(gv)) { |
7c864bb3 VP |
8701 | OP *kid, *newop; |
8702 | if (o->op_flags & OPf_KIDS) { | |
8703 | kid = cUNOPo->op_first; | |
8704 | cUNOPo->op_first = NULL; | |
8705 | } | |
8706 | else { | |
8707 | kid = newDEFSVOP(); | |
8708 | } | |
f11453cb | 8709 | #ifndef PERL_MAD |
ec4ab249 | 8710 | op_free(o); |
eb8433b7 | 8711 | #endif |
d1bef648 | 8712 | newop = newUNOP(OP_ENTERSUB, OPf_STACKED, |
2fcb4757 | 8713 | op_append_elem(OP_LIST, kid, |
f11453cb NC |
8714 | scalar(newUNOP(OP_RV2CV, 0, |
8715 | newGVOP(OP_GV, 0, | |
d1bef648 | 8716 | gv))))); |
f11453cb | 8717 | op_getmad(o,newop,'O'); |
eb8433b7 | 8718 | return newop; |
ec4ab249 GA |
8719 | } |
8720 | ||
021f53de | 8721 | return scalar(ck_fun(o)); |
8990e307 LW |
8722 | } |
8723 | ||
78f9721b SM |
8724 | OP * |
8725 | Perl_ck_return(pTHX_ OP *o) | |
8726 | { | |
97aff369 | 8727 | dVAR; |
e91684bf | 8728 | OP *kid; |
7918f24d NC |
8729 | |
8730 | PERL_ARGS_ASSERT_CK_RETURN; | |
8731 | ||
e91684bf | 8732 | kid = cLISTOPo->op_first->op_sibling; |
78f9721b | 8733 | if (CvLVALUE(PL_compcv)) { |
e91684bf | 8734 | for (; kid; kid = kid->op_sibling) |
3ad73efd | 8735 | op_lvalue(kid, OP_LEAVESUBLV); |
78f9721b | 8736 | } |
e91684bf | 8737 | |
78f9721b SM |
8738 | return o; |
8739 | } | |
8740 | ||
79072805 | 8741 | OP * |
cea2e8a9 | 8742 | Perl_ck_select(pTHX_ OP *o) |
79072805 | 8743 | { |
27da23d5 | 8744 | dVAR; |
c07a80fd | 8745 | OP* kid; |
7918f24d NC |
8746 | |
8747 | PERL_ARGS_ASSERT_CK_SELECT; | |
8748 | ||
11343788 MB |
8749 | if (o->op_flags & OPf_KIDS) { |
8750 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
2304df62 | 8751 | if (kid && kid->op_sibling) { |
11343788 | 8752 | o->op_type = OP_SSELECT; |
22c35a8c | 8753 | o->op_ppaddr = PL_ppaddr[OP_SSELECT]; |
11343788 | 8754 | o = ck_fun(o); |
985b9e54 | 8755 | return fold_constants(op_integerize(op_std_init(o))); |
79072805 LW |
8756 | } |
8757 | } | |
11343788 MB |
8758 | o = ck_fun(o); |
8759 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
c07a80fd | 8760 | if (kid && kid->op_type == OP_RV2GV) |
8761 | kid->op_private &= ~HINT_STRICT_REFS; | |
11343788 | 8762 | return o; |
79072805 LW |
8763 | } |
8764 | ||
8765 | OP * | |
cea2e8a9 | 8766 | Perl_ck_shift(pTHX_ OP *o) |
79072805 | 8767 | { |
97aff369 | 8768 | dVAR; |
6867be6d | 8769 | const I32 type = o->op_type; |
79072805 | 8770 | |
7918f24d NC |
8771 | PERL_ARGS_ASSERT_CK_SHIFT; |
8772 | ||
11343788 | 8773 | if (!(o->op_flags & OPf_KIDS)) { |
538f5756 RZ |
8774 | OP *argop; |
8775 | ||
8776 | if (!CvUNIQUE(PL_compcv)) { | |
8777 | o->op_flags |= OPf_SPECIAL; | |
8778 | return o; | |
8779 | } | |
8780 | ||
8781 | argop = newUNOP(OP_RV2AV, 0, scalar(newGVOP(OP_GV, 0, PL_argvgv))); | |
eb8433b7 | 8782 | #ifdef PERL_MAD |
790427a5 DM |
8783 | { |
8784 | OP * const oldo = o; | |
8785 | o = newUNOP(type, 0, scalar(argop)); | |
8786 | op_getmad(oldo,o,'O'); | |
8787 | return o; | |
8788 | } | |
eb8433b7 | 8789 | #else |
821005df | 8790 | op_free(o); |
6d4ff0d2 | 8791 | return newUNOP(type, 0, scalar(argop)); |
eb8433b7 | 8792 | #endif |
79072805 | 8793 | } |
d4fc4415 | 8794 | return scalar(ck_fun(o)); |
79072805 LW |
8795 | } |
8796 | ||
8797 | OP * | |
cea2e8a9 | 8798 | Perl_ck_sort(pTHX_ OP *o) |
79072805 | 8799 | { |
97aff369 | 8800 | dVAR; |
8e3f9bdf | 8801 | OP *firstkid; |
bbce6d69 | 8802 | |
7918f24d NC |
8803 | PERL_ARGS_ASSERT_CK_SORT; |
8804 | ||
1496a290 | 8805 | if (o->op_type == OP_SORT && (PL_hints & HINT_LOCALIZE_HH) != 0) { |
a4fc7abc | 8806 | HV * const hinthv = GvHV(PL_hintgv); |
7b9ef140 | 8807 | if (hinthv) { |
a4fc7abc | 8808 | SV ** const svp = hv_fetchs(hinthv, "sort", FALSE); |
7b9ef140 | 8809 | if (svp) { |
a4fc7abc | 8810 | const I32 sorthints = (I32)SvIV(*svp); |
7b9ef140 RH |
8811 | if ((sorthints & HINT_SORT_QUICKSORT) != 0) |
8812 | o->op_private |= OPpSORT_QSORT; | |
8813 | if ((sorthints & HINT_SORT_STABLE) != 0) | |
8814 | o->op_private |= OPpSORT_STABLE; | |
8815 | } | |
8816 | } | |
8817 | } | |
8818 | ||
9ea6e965 | 8819 | if (o->op_type == OP_SORT && o->op_flags & OPf_STACKED) |
51a19bc0 | 8820 | simplify_sort(o); |
8e3f9bdf GS |
8821 | firstkid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
8822 | if (o->op_flags & OPf_STACKED) { /* may have been cleared */ | |
9c5ffd7c | 8823 | OP *k = NULL; |
8e3f9bdf | 8824 | OP *kid = cUNOPx(firstkid)->op_first; /* get past null */ |
79072805 | 8825 | |
463ee0b2 | 8826 | if (kid->op_type == OP_SCOPE || kid->op_type == OP_LEAVE) { |
5983a79d | 8827 | LINKLIST(kid); |
463ee0b2 LW |
8828 | if (kid->op_type == OP_SCOPE) { |
8829 | k = kid->op_next; | |
8830 | kid->op_next = 0; | |
79072805 | 8831 | } |
463ee0b2 | 8832 | else if (kid->op_type == OP_LEAVE) { |
11343788 | 8833 | if (o->op_type == OP_SORT) { |
93c66552 | 8834 | op_null(kid); /* wipe out leave */ |
748a9306 | 8835 | kid->op_next = kid; |
463ee0b2 | 8836 | |
748a9306 LW |
8837 | for (k = kLISTOP->op_first->op_next; k; k = k->op_next) { |
8838 | if (k->op_next == kid) | |
8839 | k->op_next = 0; | |
71a29c3c GS |
8840 | /* don't descend into loops */ |
8841 | else if (k->op_type == OP_ENTERLOOP | |
8842 | || k->op_type == OP_ENTERITER) | |
8843 | { | |
8844 | k = cLOOPx(k)->op_lastop; | |
8845 | } | |
748a9306 | 8846 | } |
463ee0b2 | 8847 | } |
748a9306 LW |
8848 | else |
8849 | kid->op_next = 0; /* just disconnect the leave */ | |
a0d0e21e | 8850 | k = kLISTOP->op_first; |
463ee0b2 | 8851 | } |
a2efc822 | 8852 | CALL_PEEP(k); |
a0d0e21e | 8853 | |
8e3f9bdf GS |
8854 | kid = firstkid; |
8855 | if (o->op_type == OP_SORT) { | |
8856 | /* provide scalar context for comparison function/block */ | |
8857 | kid = scalar(kid); | |
a0d0e21e | 8858 | kid->op_next = kid; |
8e3f9bdf | 8859 | } |
a0d0e21e LW |
8860 | else |
8861 | kid->op_next = k; | |
11343788 | 8862 | o->op_flags |= OPf_SPECIAL; |
79072805 | 8863 | } |
8e3f9bdf GS |
8864 | |
8865 | firstkid = firstkid->op_sibling; | |
79072805 | 8866 | } |
bbce6d69 | 8867 | |
8e3f9bdf GS |
8868 | /* provide list context for arguments */ |
8869 | if (o->op_type == OP_SORT) | |
8870 | list(firstkid); | |
8871 | ||
11343788 | 8872 | return o; |
79072805 | 8873 | } |
bda4119b GS |
8874 | |
8875 | STATIC void | |
cea2e8a9 | 8876 | S_simplify_sort(pTHX_ OP *o) |
9c007264 | 8877 | { |
97aff369 | 8878 | dVAR; |
9c007264 JH |
8879 | register OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
8880 | OP *k; | |
eb209983 | 8881 | int descending; |
350de78d | 8882 | GV *gv; |
770526c1 | 8883 | const char *gvname; |
7918f24d NC |
8884 | |
8885 | PERL_ARGS_ASSERT_SIMPLIFY_SORT; | |
8886 | ||
9c007264 JH |
8887 | if (!(o->op_flags & OPf_STACKED)) |
8888 | return; | |
fafc274c NC |
8889 | GvMULTI_on(gv_fetchpvs("a", GV_ADD|GV_NOTQUAL, SVt_PV)); |
8890 | GvMULTI_on(gv_fetchpvs("b", GV_ADD|GV_NOTQUAL, SVt_PV)); | |
82092f1d | 8891 | kid = kUNOP->op_first; /* get past null */ |
9c007264 JH |
8892 | if (kid->op_type != OP_SCOPE) |
8893 | return; | |
8894 | kid = kLISTOP->op_last; /* get past scope */ | |
8895 | switch(kid->op_type) { | |
8896 | case OP_NCMP: | |
8897 | case OP_I_NCMP: | |
8898 | case OP_SCMP: | |
8899 | break; | |
8900 | default: | |
8901 | return; | |
8902 | } | |
8903 | k = kid; /* remember this node*/ | |
8904 | if (kBINOP->op_first->op_type != OP_RV2SV) | |
8905 | return; | |
8906 | kid = kBINOP->op_first; /* get past cmp */ | |
8907 | if (kUNOP->op_first->op_type != OP_GV) | |
8908 | return; | |
8909 | kid = kUNOP->op_first; /* get past rv2sv */ | |
638eceb6 | 8910 | gv = kGVOP_gv; |
350de78d | 8911 | if (GvSTASH(gv) != PL_curstash) |
9c007264 | 8912 | return; |
770526c1 NC |
8913 | gvname = GvNAME(gv); |
8914 | if (*gvname == 'a' && gvname[1] == '\0') | |
eb209983 | 8915 | descending = 0; |
770526c1 | 8916 | else if (*gvname == 'b' && gvname[1] == '\0') |
eb209983 | 8917 | descending = 1; |
9c007264 JH |
8918 | else |
8919 | return; | |
eb209983 | 8920 | |
9c007264 JH |
8921 | kid = k; /* back to cmp */ |
8922 | if (kBINOP->op_last->op_type != OP_RV2SV) | |
8923 | return; | |
8924 | kid = kBINOP->op_last; /* down to 2nd arg */ | |
8925 | if (kUNOP->op_first->op_type != OP_GV) | |
8926 | return; | |
8927 | kid = kUNOP->op_first; /* get past rv2sv */ | |
638eceb6 | 8928 | gv = kGVOP_gv; |
770526c1 NC |
8929 | if (GvSTASH(gv) != PL_curstash) |
8930 | return; | |
8931 | gvname = GvNAME(gv); | |
8932 | if ( descending | |
8933 | ? !(*gvname == 'a' && gvname[1] == '\0') | |
8934 | : !(*gvname == 'b' && gvname[1] == '\0')) | |
9c007264 JH |
8935 | return; |
8936 | o->op_flags &= ~(OPf_STACKED | OPf_SPECIAL); | |
eb209983 NC |
8937 | if (descending) |
8938 | o->op_private |= OPpSORT_DESCEND; | |
9c007264 JH |
8939 | if (k->op_type == OP_NCMP) |
8940 | o->op_private |= OPpSORT_NUMERIC; | |
8941 | if (k->op_type == OP_I_NCMP) | |
8942 | o->op_private |= OPpSORT_NUMERIC | OPpSORT_INTEGER; | |
e507f050 SM |
8943 | kid = cLISTOPo->op_first->op_sibling; |
8944 | cLISTOPo->op_first->op_sibling = kid->op_sibling; /* bypass old block */ | |
eb8433b7 NC |
8945 | #ifdef PERL_MAD |
8946 | op_getmad(kid,o,'S'); /* then delete it */ | |
8947 | #else | |
e507f050 | 8948 | op_free(kid); /* then delete it */ |
eb8433b7 | 8949 | #endif |
9c007264 | 8950 | } |
79072805 LW |
8951 | |
8952 | OP * | |
cea2e8a9 | 8953 | Perl_ck_split(pTHX_ OP *o) |
79072805 | 8954 | { |
27da23d5 | 8955 | dVAR; |
79072805 | 8956 | register OP *kid; |
aeea060c | 8957 | |
7918f24d NC |
8958 | PERL_ARGS_ASSERT_CK_SPLIT; |
8959 | ||
11343788 MB |
8960 | if (o->op_flags & OPf_STACKED) |
8961 | return no_fh_allowed(o); | |
79072805 | 8962 | |
11343788 | 8963 | kid = cLISTOPo->op_first; |
8990e307 | 8964 | if (kid->op_type != OP_NULL) |
5637ef5b | 8965 | Perl_croak(aTHX_ "panic: ck_split, type=%u", (unsigned) kid->op_type); |
8990e307 | 8966 | kid = kid->op_sibling; |
11343788 | 8967 | op_free(cLISTOPo->op_first); |
f126b75f MW |
8968 | if (kid) |
8969 | cLISTOPo->op_first = kid; | |
8970 | else { | |
396482e1 | 8971 | cLISTOPo->op_first = kid = newSVOP(OP_CONST, 0, newSVpvs(" ")); |
11343788 | 8972 | cLISTOPo->op_last = kid; /* There was only one element previously */ |
85e6fe83 | 8973 | } |
79072805 | 8974 | |
de4bf5b3 | 8975 | if (kid->op_type != OP_MATCH || kid->op_flags & OPf_STACKED) { |
551405c4 | 8976 | OP * const sibl = kid->op_sibling; |
463ee0b2 | 8977 | kid->op_sibling = 0; |
131b3ad0 | 8978 | kid = pmruntime( newPMOP(OP_MATCH, OPf_SPECIAL), kid, 0); |
11343788 MB |
8979 | if (cLISTOPo->op_first == cLISTOPo->op_last) |
8980 | cLISTOPo->op_last = kid; | |
8981 | cLISTOPo->op_first = kid; | |
79072805 LW |
8982 | kid->op_sibling = sibl; |
8983 | } | |
8984 | ||
8985 | kid->op_type = OP_PUSHRE; | |
22c35a8c | 8986 | kid->op_ppaddr = PL_ppaddr[OP_PUSHRE]; |
79072805 | 8987 | scalar(kid); |
a2a5de95 NC |
8988 | if (((PMOP *)kid)->op_pmflags & PMf_GLOBAL) { |
8989 | Perl_ck_warner(aTHX_ packWARN(WARN_REGEXP), | |
8990 | "Use of /g modifier is meaningless in split"); | |
f34840d8 | 8991 | } |
79072805 LW |
8992 | |
8993 | if (!kid->op_sibling) | |
2fcb4757 | 8994 | op_append_elem(OP_SPLIT, o, newDEFSVOP()); |
79072805 LW |
8995 | |
8996 | kid = kid->op_sibling; | |
8997 | scalar(kid); | |
8998 | ||
8999 | if (!kid->op_sibling) | |
2fcb4757 | 9000 | op_append_elem(OP_SPLIT, o, newSVOP(OP_CONST, 0, newSViv(0))); |
ce3e5c45 | 9001 | assert(kid->op_sibling); |
79072805 LW |
9002 | |
9003 | kid = kid->op_sibling; | |
9004 | scalar(kid); | |
9005 | ||
9006 | if (kid->op_sibling) | |
ce16c625 | 9007 | return too_many_arguments_pv(o,OP_DESC(o), 0); |
79072805 | 9008 | |
11343788 | 9009 | return o; |
79072805 LW |
9010 | } |
9011 | ||
9012 | OP * | |
1c846c1f | 9013 | Perl_ck_join(pTHX_ OP *o) |
eb6e2d6f | 9014 | { |
551405c4 | 9015 | const OP * const kid = cLISTOPo->op_first->op_sibling; |
7918f24d NC |
9016 | |
9017 | PERL_ARGS_ASSERT_CK_JOIN; | |
9018 | ||
041457d9 DM |
9019 | if (kid && kid->op_type == OP_MATCH) { |
9020 | if (ckWARN(WARN_SYNTAX)) { | |
6867be6d | 9021 | const REGEXP *re = PM_GETRE(kPMOP); |
ce16c625 BF |
9022 | const SV *msg = re |
9023 | ? newSVpvn_flags( RX_PRECOMP_const(re), RX_PRELEN(re), | |
9024 | SVs_TEMP | ( RX_UTF8(re) ? SVf_UTF8 : 0 ) ) | |
9025 | : newSVpvs_flags( "STRING", SVs_TEMP ); | |
9014280d | 9026 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
ce16c625 BF |
9027 | "/%"SVf"/ should probably be written as \"%"SVf"\"", |
9028 | SVfARG(msg), SVfARG(msg)); | |
eb6e2d6f GS |
9029 | } |
9030 | } | |
9031 | return ck_fun(o); | |
9032 | } | |
9033 | ||
d9088386 Z |
9034 | /* |
9035 | =for apidoc Am|CV *|rv2cv_op_cv|OP *cvop|U32 flags | |
9036 | ||
9037 | Examines an op, which is expected to identify a subroutine at runtime, | |
9038 | and attempts to determine at compile time which subroutine it identifies. | |
9039 | This is normally used during Perl compilation to determine whether | |
9040 | a prototype can be applied to a function call. I<cvop> is the op | |
9041 | being considered, normally an C<rv2cv> op. A pointer to the identified | |
9042 | subroutine is returned, if it could be determined statically, and a null | |
9043 | pointer is returned if it was not possible to determine statically. | |
9044 | ||
9045 | Currently, the subroutine can be identified statically if the RV that the | |
9046 | C<rv2cv> is to operate on is provided by a suitable C<gv> or C<const> op. | |
9047 | A C<gv> op is suitable if the GV's CV slot is populated. A C<const> op is | |
9048 | suitable if the constant value must be an RV pointing to a CV. Details of | |
9049 | this process may change in future versions of Perl. If the C<rv2cv> op | |
9050 | has the C<OPpENTERSUB_AMPER> flag set then no attempt is made to identify | |
9051 | the subroutine statically: this flag is used to suppress compile-time | |
9052 | magic on a subroutine call, forcing it to use default runtime behaviour. | |
9053 | ||
9054 | If I<flags> has the bit C<RV2CVOPCV_MARK_EARLY> set, then the handling | |
9055 | of a GV reference is modified. If a GV was examined and its CV slot was | |
9056 | found to be empty, then the C<gv> op has the C<OPpEARLY_CV> flag set. | |
9057 | If the op is not optimised away, and the CV slot is later populated with | |
9058 | a subroutine having a prototype, that flag eventually triggers the warning | |
9059 | "called too early to check prototype". | |
9060 | ||
9061 | If I<flags> has the bit C<RV2CVOPCV_RETURN_NAME_GV> set, then instead | |
9062 | of returning a pointer to the subroutine it returns a pointer to the | |
9063 | GV giving the most appropriate name for the subroutine in this context. | |
9064 | Normally this is just the C<CvGV> of the subroutine, but for an anonymous | |
9065 | (C<CvANON>) subroutine that is referenced through a GV it will be the | |
9066 | referencing GV. The resulting C<GV*> is cast to C<CV*> to be returned. | |
9067 | A null pointer is returned as usual if there is no statically-determinable | |
9068 | subroutine. | |
7918f24d | 9069 | |
d9088386 Z |
9070 | =cut |
9071 | */ | |
9d88f058 | 9072 | |
d9088386 Z |
9073 | CV * |
9074 | Perl_rv2cv_op_cv(pTHX_ OP *cvop, U32 flags) | |
9075 | { | |
9076 | OP *rvop; | |
9077 | CV *cv; | |
9078 | GV *gv; | |
9079 | PERL_ARGS_ASSERT_RV2CV_OP_CV; | |
9080 | if (flags & ~(RV2CVOPCV_MARK_EARLY|RV2CVOPCV_RETURN_NAME_GV)) | |
9081 | Perl_croak(aTHX_ "panic: rv2cv_op_cv bad flags %x", (unsigned)flags); | |
9082 | if (cvop->op_type != OP_RV2CV) | |
9083 | return NULL; | |
9084 | if (cvop->op_private & OPpENTERSUB_AMPER) | |
9085 | return NULL; | |
9086 | if (!(cvop->op_flags & OPf_KIDS)) | |
9087 | return NULL; | |
9088 | rvop = cUNOPx(cvop)->op_first; | |
9089 | switch (rvop->op_type) { | |
9090 | case OP_GV: { | |
9091 | gv = cGVOPx_gv(rvop); | |
9092 | cv = GvCVu(gv); | |
9093 | if (!cv) { | |
9094 | if (flags & RV2CVOPCV_MARK_EARLY) | |
9095 | rvop->op_private |= OPpEARLY_CV; | |
9096 | return NULL; | |
46fc3d4c | 9097 | } |
d9088386 Z |
9098 | } break; |
9099 | case OP_CONST: { | |
9100 | SV *rv = cSVOPx_sv(rvop); | |
9101 | if (!SvROK(rv)) | |
9102 | return NULL; | |
9103 | cv = (CV*)SvRV(rv); | |
9104 | gv = NULL; | |
9105 | } break; | |
9106 | default: { | |
9107 | return NULL; | |
9108 | } break; | |
4633a7c4 | 9109 | } |
d9088386 Z |
9110 | if (SvTYPE((SV*)cv) != SVt_PVCV) |
9111 | return NULL; | |
9112 | if (flags & RV2CVOPCV_RETURN_NAME_GV) { | |
9113 | if (!CvANON(cv) || !gv) | |
9114 | gv = CvGV(cv); | |
9115 | return (CV*)gv; | |
9116 | } else { | |
9117 | return cv; | |
7a52d87a | 9118 | } |
d9088386 | 9119 | } |
9d88f058 | 9120 | |
d9088386 Z |
9121 | /* |
9122 | =for apidoc Am|OP *|ck_entersub_args_list|OP *entersubop | |
824afba1 | 9123 | |
d9088386 Z |
9124 | Performs the default fixup of the arguments part of an C<entersub> |
9125 | op tree. This consists of applying list context to each of the | |
9126 | argument ops. This is the standard treatment used on a call marked | |
9127 | with C<&>, or a method call, or a call through a subroutine reference, | |
9128 | or any other call where the callee can't be identified at compile time, | |
9129 | or a call where the callee has no prototype. | |
824afba1 | 9130 | |
d9088386 Z |
9131 | =cut |
9132 | */ | |
340458b5 | 9133 | |
d9088386 Z |
9134 | OP * |
9135 | Perl_ck_entersub_args_list(pTHX_ OP *entersubop) | |
9136 | { | |
9137 | OP *aop; | |
9138 | PERL_ARGS_ASSERT_CK_ENTERSUB_ARGS_LIST; | |
9139 | aop = cUNOPx(entersubop)->op_first; | |
9140 | if (!aop->op_sibling) | |
9141 | aop = cUNOPx(aop)->op_first; | |
9142 | for (aop = aop->op_sibling; aop->op_sibling; aop = aop->op_sibling) { | |
9143 | if (!(PL_madskills && aop->op_type == OP_STUB)) { | |
9144 | list(aop); | |
3ad73efd | 9145 | op_lvalue(aop, OP_ENTERSUB); |
d9088386 Z |
9146 | } |
9147 | } | |
9148 | return entersubop; | |
9149 | } | |
340458b5 | 9150 | |
d9088386 Z |
9151 | /* |
9152 | =for apidoc Am|OP *|ck_entersub_args_proto|OP *entersubop|GV *namegv|SV *protosv | |
9153 | ||
9154 | Performs the fixup of the arguments part of an C<entersub> op tree | |
9155 | based on a subroutine prototype. This makes various modifications to | |
9156 | the argument ops, from applying context up to inserting C<refgen> ops, | |
9157 | and checking the number and syntactic types of arguments, as directed by | |
9158 | the prototype. This is the standard treatment used on a subroutine call, | |
9159 | not marked with C<&>, where the callee can be identified at compile time | |
9160 | and has a prototype. | |
9161 | ||
9162 | I<protosv> supplies the subroutine prototype to be applied to the call. | |
9163 | It may be a normal defined scalar, of which the string value will be used. | |
9164 | Alternatively, for convenience, it may be a subroutine object (a C<CV*> | |
9165 | that has been cast to C<SV*>) which has a prototype. The prototype | |
9166 | supplied, in whichever form, does not need to match the actual callee | |
9167 | referenced by the op tree. | |
9168 | ||
9169 | If the argument ops disagree with the prototype, for example by having | |
9170 | an unacceptable number of arguments, a valid op tree is returned anyway. | |
9171 | The error is reflected in the parser state, normally resulting in a single | |
9172 | exception at the top level of parsing which covers all the compilation | |
9173 | errors that occurred. In the error message, the callee is referred to | |
9174 | by the name defined by the I<namegv> parameter. | |
cbf82dd0 | 9175 | |
d9088386 Z |
9176 | =cut |
9177 | */ | |
9178 | ||
9179 | OP * | |
9180 | Perl_ck_entersub_args_proto(pTHX_ OP *entersubop, GV *namegv, SV *protosv) | |
9181 | { | |
9182 | STRLEN proto_len; | |
9183 | const char *proto, *proto_end; | |
9184 | OP *aop, *prev, *cvop; | |
9185 | int optional = 0; | |
9186 | I32 arg = 0; | |
9187 | I32 contextclass = 0; | |
9188 | const char *e = NULL; | |
9189 | PERL_ARGS_ASSERT_CK_ENTERSUB_ARGS_PROTO; | |
9190 | if (SvTYPE(protosv) == SVt_PVCV ? !SvPOK(protosv) : !SvOK(protosv)) | |
cb197492 | 9191 | Perl_croak(aTHX_ "panic: ck_entersub_args_proto CV with no proto, " |
5637ef5b | 9192 | "flags=%lx", (unsigned long) SvFLAGS(protosv)); |
8fa6a409 FC |
9193 | if (SvTYPE(protosv) == SVt_PVCV) |
9194 | proto = CvPROTO(protosv), proto_len = CvPROTOLEN(protosv); | |
9195 | else proto = SvPV(protosv, proto_len); | |
d9088386 Z |
9196 | proto_end = proto + proto_len; |
9197 | aop = cUNOPx(entersubop)->op_first; | |
9198 | if (!aop->op_sibling) | |
9199 | aop = cUNOPx(aop)->op_first; | |
9200 | prev = aop; | |
9201 | aop = aop->op_sibling; | |
9202 | for (cvop = aop; cvop->op_sibling; cvop = cvop->op_sibling) ; | |
9203 | while (aop != cvop) { | |
9204 | OP* o3; | |
9205 | if (PL_madskills && aop->op_type == OP_STUB) { | |
9206 | aop = aop->op_sibling; | |
9207 | continue; | |
9208 | } | |
9209 | if (PL_madskills && aop->op_type == OP_NULL) | |
9210 | o3 = ((UNOP*)aop)->op_first; | |
9211 | else | |
9212 | o3 = aop; | |
9213 | ||
9214 | if (proto >= proto_end) | |
ce16c625 | 9215 | return too_many_arguments_sv(entersubop, gv_ename(namegv), 0); |
d9088386 Z |
9216 | |
9217 | switch (*proto) { | |
597dcb2b DG |
9218 | case ';': |
9219 | optional = 1; | |
9220 | proto++; | |
9221 | continue; | |
9222 | case '_': | |
9223 | /* _ must be at the end */ | |
34daab0f | 9224 | if (proto[1] && !strchr(";@%", proto[1])) |
597dcb2b DG |
9225 | goto oops; |
9226 | case '$': | |
9227 | proto++; | |
9228 | arg++; | |
9229 | scalar(aop); | |
9230 | break; | |
9231 | case '%': | |
9232 | case '@': | |
9233 | list(aop); | |
9234 | arg++; | |
9235 | break; | |
9236 | case '&': | |
9237 | proto++; | |
9238 | arg++; | |
9239 | if (o3->op_type != OP_REFGEN && o3->op_type != OP_UNDEF) | |
ce16c625 | 9240 | bad_type_sv(arg, |
597dcb2b | 9241 | arg == 1 ? "block or sub {}" : "sub {}", |
ce16c625 | 9242 | gv_ename(namegv), 0, o3); |
597dcb2b DG |
9243 | break; |
9244 | case '*': | |
9245 | /* '*' allows any scalar type, including bareword */ | |
9246 | proto++; | |
9247 | arg++; | |
9248 | if (o3->op_type == OP_RV2GV) | |
9249 | goto wrapref; /* autoconvert GLOB -> GLOBref */ | |
9250 | else if (o3->op_type == OP_CONST) | |
9251 | o3->op_private &= ~OPpCONST_STRICT; | |
9252 | else if (o3->op_type == OP_ENTERSUB) { | |
9253 | /* accidental subroutine, revert to bareword */ | |
9254 | OP *gvop = ((UNOP*)o3)->op_first; | |
9255 | if (gvop && gvop->op_type == OP_NULL) { | |
9256 | gvop = ((UNOP*)gvop)->op_first; | |
9257 | if (gvop) { | |
9258 | for (; gvop->op_sibling; gvop = gvop->op_sibling) | |
9259 | ; | |
9260 | if (gvop && | |
9261 | (gvop->op_private & OPpENTERSUB_NOPAREN) && | |
9262 | (gvop = ((UNOP*)gvop)->op_first) && | |
9263 | gvop->op_type == OP_GV) | |
9264 | { | |
9265 | GV * const gv = cGVOPx_gv(gvop); | |
9266 | OP * const sibling = aop->op_sibling; | |
9267 | SV * const n = newSVpvs(""); | |
eb8433b7 | 9268 | #ifdef PERL_MAD |
597dcb2b | 9269 | OP * const oldaop = aop; |
eb8433b7 | 9270 | #else |
597dcb2b | 9271 | op_free(aop); |
eb8433b7 | 9272 | #endif |
597dcb2b DG |
9273 | gv_fullname4(n, gv, "", FALSE); |
9274 | aop = newSVOP(OP_CONST, 0, n); | |
9275 | op_getmad(oldaop,aop,'O'); | |
9276 | prev->op_sibling = aop; | |
9277 | aop->op_sibling = sibling; | |
9278 | } | |
9675f7ac GS |
9279 | } |
9280 | } | |
9281 | } | |
597dcb2b | 9282 | scalar(aop); |
c035a075 DG |
9283 | break; |
9284 | case '+': | |
9285 | proto++; | |
9286 | arg++; | |
9287 | if (o3->op_type == OP_RV2AV || | |
9288 | o3->op_type == OP_PADAV || | |
9289 | o3->op_type == OP_RV2HV || | |
9290 | o3->op_type == OP_PADHV | |
9291 | ) { | |
9292 | goto wrapref; | |
9293 | } | |
9294 | scalar(aop); | |
d9088386 | 9295 | break; |
597dcb2b DG |
9296 | case '[': case ']': |
9297 | goto oops; | |
d9088386 | 9298 | break; |
597dcb2b DG |
9299 | case '\\': |
9300 | proto++; | |
9301 | arg++; | |
9302 | again: | |
9303 | switch (*proto++) { | |
9304 | case '[': | |
9305 | if (contextclass++ == 0) { | |
9306 | e = strchr(proto, ']'); | |
9307 | if (!e || e == proto) | |
9308 | goto oops; | |
9309 | } | |
9310 | else | |
9311 | goto oops; | |
9312 | goto again; | |
9313 | break; | |
9314 | case ']': | |
9315 | if (contextclass) { | |
9316 | const char *p = proto; | |
9317 | const char *const end = proto; | |
9318 | contextclass = 0; | |
062678b2 FC |
9319 | while (*--p != '[') |
9320 | /* \[$] accepts any scalar lvalue */ | |
9321 | if (*p == '$' | |
9322 | && Perl_op_lvalue_flags(aTHX_ | |
9323 | scalar(o3), | |
9324 | OP_READ, /* not entersub */ | |
9325 | OP_LVALUE_NO_CROAK | |
9326 | )) goto wrapref; | |
ce16c625 | 9327 | bad_type_sv(arg, Perl_form(aTHX_ "one of %.*s", |
597dcb2b | 9328 | (int)(end - p), p), |
ce16c625 | 9329 | gv_ename(namegv), 0, o3); |
597dcb2b DG |
9330 | } else |
9331 | goto oops; | |
9332 | break; | |
9333 | case '*': | |
9334 | if (o3->op_type == OP_RV2GV) | |
9335 | goto wrapref; | |
9336 | if (!contextclass) | |
ce16c625 | 9337 | bad_type_sv(arg, "symbol", gv_ename(namegv), 0, o3); |
597dcb2b DG |
9338 | break; |
9339 | case '&': | |
9340 | if (o3->op_type == OP_ENTERSUB) | |
9341 | goto wrapref; | |
9342 | if (!contextclass) | |
ce16c625 | 9343 | bad_type_sv(arg, "subroutine entry", gv_ename(namegv), 0, |
597dcb2b DG |
9344 | o3); |
9345 | break; | |
9346 | case '$': | |
9347 | if (o3->op_type == OP_RV2SV || | |
9348 | o3->op_type == OP_PADSV || | |
9349 | o3->op_type == OP_HELEM || | |
9350 | o3->op_type == OP_AELEM) | |
9351 | goto wrapref; | |
062678b2 FC |
9352 | if (!contextclass) { |
9353 | /* \$ accepts any scalar lvalue */ | |
9354 | if (Perl_op_lvalue_flags(aTHX_ | |
9355 | scalar(o3), | |
9356 | OP_READ, /* not entersub */ | |
9357 | OP_LVALUE_NO_CROAK | |
9358 | )) goto wrapref; | |
ce16c625 | 9359 | bad_type_sv(arg, "scalar", gv_ename(namegv), 0, o3); |
062678b2 | 9360 | } |
597dcb2b DG |
9361 | break; |
9362 | case '@': | |
9363 | if (o3->op_type == OP_RV2AV || | |
9364 | o3->op_type == OP_PADAV) | |
9365 | goto wrapref; | |
9366 | if (!contextclass) | |
ce16c625 | 9367 | bad_type_sv(arg, "array", gv_ename(namegv), 0, o3); |
597dcb2b DG |
9368 | break; |
9369 | case '%': | |
9370 | if (o3->op_type == OP_RV2HV || | |
9371 | o3->op_type == OP_PADHV) | |
9372 | goto wrapref; | |
9373 | if (!contextclass) | |
ce16c625 | 9374 | bad_type_sv(arg, "hash", gv_ename(namegv), 0, o3); |
597dcb2b DG |
9375 | break; |
9376 | wrapref: | |
9377 | { | |
9378 | OP* const kid = aop; | |
9379 | OP* const sib = kid->op_sibling; | |
9380 | kid->op_sibling = 0; | |
9381 | aop = newUNOP(OP_REFGEN, 0, kid); | |
9382 | aop->op_sibling = sib; | |
9383 | prev->op_sibling = aop; | |
9384 | } | |
9385 | if (contextclass && e) { | |
9386 | proto = e + 1; | |
9387 | contextclass = 0; | |
9388 | } | |
9389 | break; | |
9390 | default: goto oops; | |
4633a7c4 | 9391 | } |
597dcb2b DG |
9392 | if (contextclass) |
9393 | goto again; | |
4633a7c4 | 9394 | break; |
597dcb2b DG |
9395 | case ' ': |
9396 | proto++; | |
9397 | continue; | |
9398 | default: | |
108f32a5 BF |
9399 | oops: { |
9400 | SV* const tmpsv = sv_newmortal(); | |
9401 | gv_efullname3(tmpsv, namegv, NULL); | |
9402 | Perl_croak(aTHX_ "Malformed prototype for %"SVf": %"SVf, | |
9403 | SVfARG(tmpsv), SVfARG(protosv)); | |
9404 | } | |
d9088386 Z |
9405 | } |
9406 | ||
3ad73efd | 9407 | op_lvalue(aop, OP_ENTERSUB); |
d9088386 Z |
9408 | prev = aop; |
9409 | aop = aop->op_sibling; | |
9410 | } | |
9411 | if (aop == cvop && *proto == '_') { | |
9412 | /* generate an access to $_ */ | |
9413 | aop = newDEFSVOP(); | |
9414 | aop->op_sibling = prev->op_sibling; | |
9415 | prev->op_sibling = aop; /* instead of cvop */ | |
9416 | } | |
9417 | if (!optional && proto_end > proto && | |
9418 | (*proto != '@' && *proto != '%' && *proto != ';' && *proto != '_')) | |
ce16c625 | 9419 | return too_few_arguments_sv(entersubop, gv_ename(namegv), 0); |
d9088386 Z |
9420 | return entersubop; |
9421 | } | |
9422 | ||
9423 | /* | |
9424 | =for apidoc Am|OP *|ck_entersub_args_proto_or_list|OP *entersubop|GV *namegv|SV *protosv | |
9425 | ||
9426 | Performs the fixup of the arguments part of an C<entersub> op tree either | |
9427 | based on a subroutine prototype or using default list-context processing. | |
9428 | This is the standard treatment used on a subroutine call, not marked | |
9429 | with C<&>, where the callee can be identified at compile time. | |
9430 | ||
9431 | I<protosv> supplies the subroutine prototype to be applied to the call, | |
9432 | or indicates that there is no prototype. It may be a normal scalar, | |
9433 | in which case if it is defined then the string value will be used | |
9434 | as a prototype, and if it is undefined then there is no prototype. | |
9435 | Alternatively, for convenience, it may be a subroutine object (a C<CV*> | |
9436 | that has been cast to C<SV*>), of which the prototype will be used if it | |
9437 | has one. The prototype (or lack thereof) supplied, in whichever form, | |
9438 | does not need to match the actual callee referenced by the op tree. | |
9439 | ||
9440 | If the argument ops disagree with the prototype, for example by having | |
9441 | an unacceptable number of arguments, a valid op tree is returned anyway. | |
9442 | The error is reflected in the parser state, normally resulting in a single | |
9443 | exception at the top level of parsing which covers all the compilation | |
9444 | errors that occurred. In the error message, the callee is referred to | |
9445 | by the name defined by the I<namegv> parameter. | |
9446 | ||
9447 | =cut | |
9448 | */ | |
9449 | ||
9450 | OP * | |
9451 | Perl_ck_entersub_args_proto_or_list(pTHX_ OP *entersubop, | |
9452 | GV *namegv, SV *protosv) | |
9453 | { | |
9454 | PERL_ARGS_ASSERT_CK_ENTERSUB_ARGS_PROTO_OR_LIST; | |
9455 | if (SvTYPE(protosv) == SVt_PVCV ? SvPOK(protosv) : SvOK(protosv)) | |
9456 | return ck_entersub_args_proto(entersubop, namegv, protosv); | |
9457 | else | |
9458 | return ck_entersub_args_list(entersubop); | |
9459 | } | |
9460 | ||
4aaa4757 FC |
9461 | OP * |
9462 | Perl_ck_entersub_args_core(pTHX_ OP *entersubop, GV *namegv, SV *protosv) | |
9463 | { | |
9464 | int opnum = SvTYPE(protosv) == SVt_PVCV ? 0 : (int)SvUV(protosv); | |
9465 | OP *aop = cUNOPx(entersubop)->op_first; | |
9466 | ||
9467 | PERL_ARGS_ASSERT_CK_ENTERSUB_ARGS_CORE; | |
9468 | ||
9469 | if (!opnum) { | |
14f0f125 | 9470 | OP *cvop; |
4aaa4757 FC |
9471 | if (!aop->op_sibling) |
9472 | aop = cUNOPx(aop)->op_first; | |
4aaa4757 FC |
9473 | aop = aop->op_sibling; |
9474 | for (cvop = aop; cvop->op_sibling; cvop = cvop->op_sibling) ; | |
9475 | if (PL_madskills) while (aop != cvop && aop->op_type == OP_STUB) { | |
9476 | aop = aop->op_sibling; | |
4aaa4757 FC |
9477 | } |
9478 | if (aop != cvop) | |
ce16c625 | 9479 | (void)too_many_arguments_pv(entersubop, GvNAME(namegv), 0); |
4aaa4757 FC |
9480 | |
9481 | op_free(entersubop); | |
9482 | switch(GvNAME(namegv)[2]) { | |
9483 | case 'F': return newSVOP(OP_CONST, 0, | |
9484 | newSVpv(CopFILE(PL_curcop),0)); | |
9485 | case 'L': return newSVOP( | |
9486 | OP_CONST, 0, | |
9487 | Perl_newSVpvf(aTHX_ | |
9488 | "%"IVdf, (IV)CopLINE(PL_curcop) | |
9489 | ) | |
9490 | ); | |
9491 | case 'P': return newSVOP(OP_CONST, 0, | |
9492 | (PL_curstash | |
9493 | ? newSVhek(HvNAME_HEK(PL_curstash)) | |
9494 | : &PL_sv_undef | |
9495 | ) | |
9496 | ); | |
9497 | } | |
9498 | assert(0); | |
9499 | } | |
9500 | else { | |
9501 | OP *prev, *cvop; | |
7d789282 | 9502 | U32 flags; |
4aaa4757 FC |
9503 | #ifdef PERL_MAD |
9504 | bool seenarg = FALSE; | |
9505 | #endif | |
9506 | if (!aop->op_sibling) | |
9507 | aop = cUNOPx(aop)->op_first; | |
9508 | ||
9509 | prev = aop; | |
9510 | aop = aop->op_sibling; | |
9511 | prev->op_sibling = NULL; | |
9512 | for (cvop = aop; | |
9513 | cvop->op_sibling; | |
9514 | prev=cvop, cvop = cvop->op_sibling) | |
9515 | #ifdef PERL_MAD | |
9516 | if (PL_madskills && cvop->op_sibling | |
9517 | && cvop->op_type != OP_STUB) seenarg = TRUE | |
9518 | #endif | |
9519 | ; | |
9520 | prev->op_sibling = NULL; | |
7d789282 | 9521 | flags = OPf_SPECIAL * !(cvop->op_private & OPpENTERSUB_NOPAREN); |
4aaa4757 FC |
9522 | op_free(cvop); |
9523 | if (aop == cvop) aop = NULL; | |
9524 | op_free(entersubop); | |
9525 | ||
7d789282 FC |
9526 | if (opnum == OP_ENTEREVAL |
9527 | && GvNAMELEN(namegv)==9 && strnEQ(GvNAME(namegv), "evalbytes", 9)) | |
9528 | flags |= OPpEVAL_BYTES <<8; | |
9529 | ||
4aaa4757 FC |
9530 | switch (PL_opargs[opnum] & OA_CLASS_MASK) { |
9531 | case OA_UNOP: | |
9532 | case OA_BASEOP_OR_UNOP: | |
9533 | case OA_FILESTATOP: | |
7d789282 | 9534 | return aop ? newUNOP(opnum,flags,aop) : newOP(opnum,flags); |
4aaa4757 FC |
9535 | case OA_BASEOP: |
9536 | if (aop) { | |
9537 | #ifdef PERL_MAD | |
9538 | if (!PL_madskills || seenarg) | |
9539 | #endif | |
ce16c625 | 9540 | (void)too_many_arguments_pv(aop, GvNAME(namegv), 0); |
4aaa4757 FC |
9541 | op_free(aop); |
9542 | } | |
98be9964 FC |
9543 | return opnum == OP_RUNCV |
9544 | ? newPVOP(OP_RUNCV,0,NULL) | |
9545 | : newOP(opnum,0); | |
4aaa4757 FC |
9546 | default: |
9547 | return convert(opnum,0,aop); | |
9548 | } | |
9549 | } | |
9550 | assert(0); | |
9551 | return entersubop; | |
9552 | } | |
9553 | ||
d9088386 Z |
9554 | /* |
9555 | =for apidoc Am|void|cv_get_call_checker|CV *cv|Perl_call_checker *ckfun_p|SV **ckobj_p | |
9556 | ||
9557 | Retrieves the function that will be used to fix up a call to I<cv>. | |
9558 | Specifically, the function is applied to an C<entersub> op tree for a | |
9559 | subroutine call, not marked with C<&>, where the callee can be identified | |
9560 | at compile time as I<cv>. | |
9561 | ||
9562 | The C-level function pointer is returned in I<*ckfun_p>, and an SV | |
9563 | argument for it is returned in I<*ckobj_p>. The function is intended | |
9564 | to be called in this manner: | |
9565 | ||
9566 | entersubop = (*ckfun_p)(aTHX_ entersubop, namegv, (*ckobj_p)); | |
9567 | ||
9568 | In this call, I<entersubop> is a pointer to the C<entersub> op, | |
9569 | which may be replaced by the check function, and I<namegv> is a GV | |
9570 | supplying the name that should be used by the check function to refer | |
9571 | to the callee of the C<entersub> op if it needs to emit any diagnostics. | |
9572 | It is permitted to apply the check function in non-standard situations, | |
9573 | such as to a call to a different subroutine or to a method call. | |
340458b5 | 9574 | |
d9088386 Z |
9575 | By default, the function is |
9576 | L<Perl_ck_entersub_args_proto_or_list|/ck_entersub_args_proto_or_list>, | |
9577 | and the SV parameter is I<cv> itself. This implements standard | |
9578 | prototype processing. It can be changed, for a particular subroutine, | |
9579 | by L</cv_set_call_checker>. | |
74735042 | 9580 | |
d9088386 Z |
9581 | =cut |
9582 | */ | |
9583 | ||
9584 | void | |
9585 | Perl_cv_get_call_checker(pTHX_ CV *cv, Perl_call_checker *ckfun_p, SV **ckobj_p) | |
9586 | { | |
9587 | MAGIC *callmg; | |
9588 | PERL_ARGS_ASSERT_CV_GET_CALL_CHECKER; | |
9589 | callmg = SvMAGICAL((SV*)cv) ? mg_find((SV*)cv, PERL_MAGIC_checkcall) : NULL; | |
9590 | if (callmg) { | |
9591 | *ckfun_p = DPTR2FPTR(Perl_call_checker, callmg->mg_ptr); | |
9592 | *ckobj_p = callmg->mg_obj; | |
9593 | } else { | |
9594 | *ckfun_p = Perl_ck_entersub_args_proto_or_list; | |
9595 | *ckobj_p = (SV*)cv; | |
9596 | } | |
9597 | } | |
9598 | ||
9599 | /* | |
9600 | =for apidoc Am|void|cv_set_call_checker|CV *cv|Perl_call_checker ckfun|SV *ckobj | |
9601 | ||
9602 | Sets the function that will be used to fix up a call to I<cv>. | |
9603 | Specifically, the function is applied to an C<entersub> op tree for a | |
9604 | subroutine call, not marked with C<&>, where the callee can be identified | |
9605 | at compile time as I<cv>. | |
9606 | ||
9607 | The C-level function pointer is supplied in I<ckfun>, and an SV argument | |
9608 | for it is supplied in I<ckobj>. The function is intended to be called | |
9609 | in this manner: | |
9610 | ||
9611 | entersubop = ckfun(aTHX_ entersubop, namegv, ckobj); | |
9612 | ||
9613 | In this call, I<entersubop> is a pointer to the C<entersub> op, | |
9614 | which may be replaced by the check function, and I<namegv> is a GV | |
9615 | supplying the name that should be used by the check function to refer | |
9616 | to the callee of the C<entersub> op if it needs to emit any diagnostics. | |
9617 | It is permitted to apply the check function in non-standard situations, | |
9618 | such as to a call to a different subroutine or to a method call. | |
9619 | ||
9620 | The current setting for a particular CV can be retrieved by | |
9621 | L</cv_get_call_checker>. | |
9622 | ||
9623 | =cut | |
9624 | */ | |
9625 | ||
9626 | void | |
9627 | Perl_cv_set_call_checker(pTHX_ CV *cv, Perl_call_checker ckfun, SV *ckobj) | |
9628 | { | |
9629 | PERL_ARGS_ASSERT_CV_SET_CALL_CHECKER; | |
9630 | if (ckfun == Perl_ck_entersub_args_proto_or_list && ckobj == (SV*)cv) { | |
9631 | if (SvMAGICAL((SV*)cv)) | |
9632 | mg_free_type((SV*)cv, PERL_MAGIC_checkcall); | |
9633 | } else { | |
9634 | MAGIC *callmg; | |
9635 | sv_magic((SV*)cv, &PL_sv_undef, PERL_MAGIC_checkcall, NULL, 0); | |
9636 | callmg = mg_find((SV*)cv, PERL_MAGIC_checkcall); | |
9637 | if (callmg->mg_flags & MGf_REFCOUNTED) { | |
9638 | SvREFCNT_dec(callmg->mg_obj); | |
9639 | callmg->mg_flags &= ~MGf_REFCOUNTED; | |
9640 | } | |
9641 | callmg->mg_ptr = FPTR2DPTR(char *, ckfun); | |
9642 | callmg->mg_obj = ckobj; | |
9643 | if (ckobj != (SV*)cv) { | |
9644 | SvREFCNT_inc_simple_void_NN(ckobj); | |
9645 | callmg->mg_flags |= MGf_REFCOUNTED; | |
74735042 | 9646 | } |
09fb282d | 9647 | callmg->mg_flags |= MGf_COPY; |
340458b5 | 9648 | } |
d9088386 Z |
9649 | } |
9650 | ||
9651 | OP * | |
9652 | Perl_ck_subr(pTHX_ OP *o) | |
9653 | { | |
9654 | OP *aop, *cvop; | |
9655 | CV *cv; | |
9656 | GV *namegv; | |
9657 | ||
9658 | PERL_ARGS_ASSERT_CK_SUBR; | |
9659 | ||
9660 | aop = cUNOPx(o)->op_first; | |
9661 | if (!aop->op_sibling) | |
9662 | aop = cUNOPx(aop)->op_first; | |
9663 | aop = aop->op_sibling; | |
9664 | for (cvop = aop; cvop->op_sibling; cvop = cvop->op_sibling) ; | |
9665 | cv = rv2cv_op_cv(cvop, RV2CVOPCV_MARK_EARLY); | |
9666 | namegv = cv ? (GV*)rv2cv_op_cv(cvop, RV2CVOPCV_RETURN_NAME_GV) : NULL; | |
9667 | ||
767eda44 | 9668 | o->op_private &= ~1; |
d9088386 Z |
9669 | o->op_private |= OPpENTERSUB_HASTARG; |
9670 | o->op_private |= (PL_hints & HINT_STRICT_REFS); | |
9671 | if (PERLDB_SUB && PL_curstash != PL_debstash) | |
9672 | o->op_private |= OPpENTERSUB_DB; | |
9673 | if (cvop->op_type == OP_RV2CV) { | |
9674 | o->op_private |= (cvop->op_private & OPpENTERSUB_AMPER); | |
9675 | op_null(cvop); | |
9676 | } else if (cvop->op_type == OP_METHOD || cvop->op_type == OP_METHOD_NAMED) { | |
9677 | if (aop->op_type == OP_CONST) | |
9678 | aop->op_private &= ~OPpCONST_STRICT; | |
9679 | else if (aop->op_type == OP_LIST) { | |
9680 | OP * const sib = ((UNOP*)aop)->op_first->op_sibling; | |
9681 | if (sib && sib->op_type == OP_CONST) | |
9682 | sib->op_private &= ~OPpCONST_STRICT; | |
9683 | } | |
9684 | } | |
9685 | ||
9686 | if (!cv) { | |
9687 | return ck_entersub_args_list(o); | |
9688 | } else { | |
9689 | Perl_call_checker ckfun; | |
9690 | SV *ckobj; | |
9691 | cv_get_call_checker(cv, &ckfun, &ckobj); | |
9692 | return ckfun(aTHX_ o, namegv, ckobj); | |
9693 | } | |
79072805 LW |
9694 | } |
9695 | ||
9696 | OP * | |
cea2e8a9 | 9697 | Perl_ck_svconst(pTHX_ OP *o) |
8990e307 | 9698 | { |
7918f24d | 9699 | PERL_ARGS_ASSERT_CK_SVCONST; |
96a5add6 | 9700 | PERL_UNUSED_CONTEXT; |
11343788 MB |
9701 | SvREADONLY_on(cSVOPo->op_sv); |
9702 | return o; | |
8990e307 LW |
9703 | } |
9704 | ||
9705 | OP * | |
d4ac975e GA |
9706 | Perl_ck_chdir(pTHX_ OP *o) |
9707 | { | |
a4e74480 | 9708 | PERL_ARGS_ASSERT_CK_CHDIR; |
d4ac975e | 9709 | if (o->op_flags & OPf_KIDS) { |
1496a290 | 9710 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
d4ac975e GA |
9711 | |
9712 | if (kid && kid->op_type == OP_CONST && | |
9713 | (kid->op_private & OPpCONST_BARE)) | |
9714 | { | |
9715 | o->op_flags |= OPf_SPECIAL; | |
9716 | kid->op_private &= ~OPpCONST_STRICT; | |
9717 | } | |
9718 | } | |
9719 | return ck_fun(o); | |
9720 | } | |
9721 | ||
9722 | OP * | |
cea2e8a9 | 9723 | Perl_ck_trunc(pTHX_ OP *o) |
79072805 | 9724 | { |
7918f24d NC |
9725 | PERL_ARGS_ASSERT_CK_TRUNC; |
9726 | ||
11343788 MB |
9727 | if (o->op_flags & OPf_KIDS) { |
9728 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 | 9729 | |
a0d0e21e LW |
9730 | if (kid->op_type == OP_NULL) |
9731 | kid = (SVOP*)kid->op_sibling; | |
bb53490d GS |
9732 | if (kid && kid->op_type == OP_CONST && |
9733 | (kid->op_private & OPpCONST_BARE)) | |
9734 | { | |
11343788 | 9735 | o->op_flags |= OPf_SPECIAL; |
bb53490d GS |
9736 | kid->op_private &= ~OPpCONST_STRICT; |
9737 | } | |
79072805 | 9738 | } |
11343788 | 9739 | return ck_fun(o); |
79072805 LW |
9740 | } |
9741 | ||
35fba0d9 RG |
9742 | OP * |
9743 | Perl_ck_substr(pTHX_ OP *o) | |
9744 | { | |
7918f24d NC |
9745 | PERL_ARGS_ASSERT_CK_SUBSTR; |
9746 | ||
35fba0d9 | 9747 | o = ck_fun(o); |
1d866c12 | 9748 | if ((o->op_flags & OPf_KIDS) && (o->op_private == 4)) { |
35fba0d9 RG |
9749 | OP *kid = cLISTOPo->op_first; |
9750 | ||
9751 | if (kid->op_type == OP_NULL) | |
9752 | kid = kid->op_sibling; | |
9753 | if (kid) | |
9754 | kid->op_flags |= OPf_MOD; | |
9755 | ||
9756 | } | |
9757 | return o; | |
9758 | } | |
9759 | ||
878d132a | 9760 | OP * |
8dc99089 FC |
9761 | Perl_ck_tell(pTHX_ OP *o) |
9762 | { | |
8dc99089 FC |
9763 | PERL_ARGS_ASSERT_CK_TELL; |
9764 | o = ck_fun(o); | |
e9d7a483 FC |
9765 | if (o->op_flags & OPf_KIDS) { |
9766 | OP *kid = cLISTOPo->op_first; | |
423e8af5 | 9767 | if (kid->op_type == OP_NULL && kid->op_sibling) kid = kid->op_sibling; |
e9d7a483 FC |
9768 | if (kid->op_type == OP_RV2GV) kid->op_private |= OPpALLOW_FAKE; |
9769 | } | |
8dc99089 FC |
9770 | return o; |
9771 | } | |
9772 | ||
9773 | OP * | |
cba5a3b0 DG |
9774 | Perl_ck_each(pTHX_ OP *o) |
9775 | { | |
9776 | dVAR; | |
9777 | OP *kid = o->op_flags & OPf_KIDS ? cUNOPo->op_first : NULL; | |
9778 | const unsigned orig_type = o->op_type; | |
9779 | const unsigned array_type = orig_type == OP_EACH ? OP_AEACH | |
9780 | : orig_type == OP_KEYS ? OP_AKEYS : OP_AVALUES; | |
9781 | const unsigned ref_type = orig_type == OP_EACH ? OP_REACH | |
9782 | : orig_type == OP_KEYS ? OP_RKEYS : OP_RVALUES; | |
9783 | ||
9784 | PERL_ARGS_ASSERT_CK_EACH; | |
9785 | ||
9786 | if (kid) { | |
9787 | switch (kid->op_type) { | |
9788 | case OP_PADHV: | |
9789 | case OP_RV2HV: | |
9790 | break; | |
9791 | case OP_PADAV: | |
9792 | case OP_RV2AV: | |
9793 | CHANGE_TYPE(o, array_type); | |
9794 | break; | |
9795 | case OP_CONST: | |
7ac5715b FC |
9796 | if (kid->op_private == OPpCONST_BARE |
9797 | || !SvROK(cSVOPx_sv(kid)) | |
9798 | || ( SvTYPE(SvRV(cSVOPx_sv(kid))) != SVt_PVAV | |
9799 | && SvTYPE(SvRV(cSVOPx_sv(kid))) != SVt_PVHV ) | |
9800 | ) | |
9801 | /* we let ck_fun handle it */ | |
cba5a3b0 DG |
9802 | break; |
9803 | default: | |
9804 | CHANGE_TYPE(o, ref_type); | |
7ac5715b | 9805 | scalar(kid); |
cba5a3b0 DG |
9806 | } |
9807 | } | |
9808 | /* if treating as a reference, defer additional checks to runtime */ | |
9809 | return o->op_type == ref_type ? o : ck_fun(o); | |
9810 | } | |
9811 | ||
e508c8a4 MH |
9812 | OP * |
9813 | Perl_ck_length(pTHX_ OP *o) | |
9814 | { | |
9815 | PERL_ARGS_ASSERT_CK_LENGTH; | |
9816 | ||
9817 | o = ck_fun(o); | |
9818 | ||
9819 | if (ckWARN(WARN_SYNTAX)) { | |
9820 | const OP *kid = o->op_flags & OPf_KIDS ? cLISTOPo->op_first : NULL; | |
9821 | ||
9822 | if (kid) { | |
579333ee FC |
9823 | SV *name = NULL; |
9824 | const bool hash = kid->op_type == OP_PADHV | |
9825 | || kid->op_type == OP_RV2HV; | |
e508c8a4 MH |
9826 | switch (kid->op_type) { |
9827 | case OP_PADHV: | |
e508c8a4 | 9828 | case OP_PADAV: |
579333ee | 9829 | name = varname( |
c6fb3f6e FC |
9830 | (GV *)PL_compcv, hash ? '%' : '@', kid->op_targ, |
9831 | NULL, 0, 1 | |
579333ee FC |
9832 | ); |
9833 | break; | |
9834 | case OP_RV2HV: | |
e508c8a4 | 9835 | case OP_RV2AV: |
579333ee FC |
9836 | if (cUNOPx(kid)->op_first->op_type != OP_GV) break; |
9837 | { | |
9838 | GV *gv = cGVOPx_gv(cUNOPx(kid)->op_first); | |
9839 | if (!gv) break; | |
9840 | name = varname(gv, hash?'%':'@', 0, NULL, 0, 1); | |
9841 | } | |
e508c8a4 | 9842 | break; |
e508c8a4 | 9843 | default: |
579333ee | 9844 | return o; |
e508c8a4 | 9845 | } |
579333ee FC |
9846 | if (name) |
9847 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), | |
9848 | "length() used on %"SVf" (did you mean \"scalar(%s%"SVf | |
9849 | ")\"?)", | |
9850 | name, hash ? "keys " : "", name | |
9851 | ); | |
9852 | else if (hash) | |
9853 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), | |
9854 | "length() used on %%hash (did you mean \"scalar(keys %%hash)\"?)"); | |
9855 | else | |
9856 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), | |
9857 | "length() used on @array (did you mean \"scalar(@array)\"?)"); | |
e508c8a4 MH |
9858 | } |
9859 | } | |
9860 | ||
9861 | return o; | |
9862 | } | |
9863 | ||
867fa1e2 YO |
9864 | /* caller is supposed to assign the return to the |
9865 | container of the rep_op var */ | |
20381b50 | 9866 | STATIC OP * |
867fa1e2 | 9867 | S_opt_scalarhv(pTHX_ OP *rep_op) { |
749123ff | 9868 | dVAR; |
867fa1e2 YO |
9869 | UNOP *unop; |
9870 | ||
9871 | PERL_ARGS_ASSERT_OPT_SCALARHV; | |
9872 | ||
9873 | NewOp(1101, unop, 1, UNOP); | |
9874 | unop->op_type = (OPCODE)OP_BOOLKEYS; | |
9875 | unop->op_ppaddr = PL_ppaddr[OP_BOOLKEYS]; | |
9876 | unop->op_flags = (U8)(OPf_WANT_SCALAR | OPf_KIDS ); | |
9877 | unop->op_private = (U8)(1 | ((OPf_WANT_SCALAR | OPf_KIDS) >> 8)); | |
9878 | unop->op_first = rep_op; | |
9879 | unop->op_next = rep_op->op_next; | |
9880 | rep_op->op_next = (OP*)unop; | |
9881 | rep_op->op_flags|=(OPf_REF | OPf_MOD); | |
9882 | unop->op_sibling = rep_op->op_sibling; | |
9883 | rep_op->op_sibling = NULL; | |
9884 | /* unop->op_targ = pad_alloc(OP_BOOLKEYS, SVs_PADTMP); */ | |
9885 | if (rep_op->op_type == OP_PADHV) { | |
9886 | rep_op->op_flags &= ~OPf_WANT_SCALAR; | |
9887 | rep_op->op_flags |= OPf_WANT_LIST; | |
9888 | } | |
9889 | return (OP*)unop; | |
9890 | } | |
9891 | ||
540dd770 GG |
9892 | /* Check for in place reverse and sort assignments like "@a = reverse @a" |
9893 | and modify the optree to make them work inplace */ | |
e52d58aa | 9894 | |
540dd770 GG |
9895 | STATIC void |
9896 | S_inplace_aassign(pTHX_ OP *o) { | |
e52d58aa | 9897 | |
540dd770 GG |
9898 | OP *modop, *modop_pushmark; |
9899 | OP *oright; | |
9900 | OP *oleft, *oleft_pushmark; | |
e52d58aa | 9901 | |
540dd770 | 9902 | PERL_ARGS_ASSERT_INPLACE_AASSIGN; |
e52d58aa | 9903 | |
540dd770 | 9904 | assert((o->op_flags & OPf_WANT) == OPf_WANT_VOID); |
e52d58aa | 9905 | |
540dd770 GG |
9906 | assert(cUNOPo->op_first->op_type == OP_NULL); |
9907 | modop_pushmark = cUNOPx(cUNOPo->op_first)->op_first; | |
9908 | assert(modop_pushmark->op_type == OP_PUSHMARK); | |
9909 | modop = modop_pushmark->op_sibling; | |
e92f843d | 9910 | |
540dd770 GG |
9911 | if (modop->op_type != OP_SORT && modop->op_type != OP_REVERSE) |
9912 | return; | |
9913 | ||
9914 | /* no other operation except sort/reverse */ | |
9915 | if (modop->op_sibling) | |
9916 | return; | |
9917 | ||
9918 | assert(cUNOPx(modop)->op_first->op_type == OP_PUSHMARK); | |
a46b39a8 | 9919 | if (!(oright = cUNOPx(modop)->op_first->op_sibling)) return; |
540dd770 GG |
9920 | |
9921 | if (modop->op_flags & OPf_STACKED) { | |
9922 | /* skip sort subroutine/block */ | |
9923 | assert(oright->op_type == OP_NULL); | |
9924 | oright = oright->op_sibling; | |
9925 | } | |
9926 | ||
9927 | assert(cUNOPo->op_first->op_sibling->op_type == OP_NULL); | |
9928 | oleft_pushmark = cUNOPx(cUNOPo->op_first->op_sibling)->op_first; | |
9929 | assert(oleft_pushmark->op_type == OP_PUSHMARK); | |
9930 | oleft = oleft_pushmark->op_sibling; | |
9931 | ||
9932 | /* Check the lhs is an array */ | |
9933 | if (!oleft || | |
9934 | (oleft->op_type != OP_RV2AV && oleft->op_type != OP_PADAV) | |
9935 | || oleft->op_sibling | |
9936 | || (oleft->op_private & OPpLVAL_INTRO) | |
9937 | ) | |
9938 | return; | |
9939 | ||
9940 | /* Only one thing on the rhs */ | |
9941 | if (oright->op_sibling) | |
9942 | return; | |
2f9e2db0 VP |
9943 | |
9944 | /* check the array is the same on both sides */ | |
9945 | if (oleft->op_type == OP_RV2AV) { | |
9946 | if (oright->op_type != OP_RV2AV | |
9947 | || !cUNOPx(oright)->op_first | |
9948 | || cUNOPx(oright)->op_first->op_type != OP_GV | |
18e3e9ce | 9949 | || cUNOPx(oleft )->op_first->op_type != OP_GV |
2f9e2db0 VP |
9950 | || cGVOPx_gv(cUNOPx(oleft)->op_first) != |
9951 | cGVOPx_gv(cUNOPx(oright)->op_first) | |
9952 | ) | |
540dd770 | 9953 | return; |
2f9e2db0 VP |
9954 | } |
9955 | else if (oright->op_type != OP_PADAV | |
9956 | || oright->op_targ != oleft->op_targ | |
9957 | ) | |
540dd770 GG |
9958 | return; |
9959 | ||
9960 | /* This actually is an inplace assignment */ | |
e52d58aa | 9961 | |
540dd770 GG |
9962 | modop->op_private |= OPpSORT_INPLACE; |
9963 | ||
9964 | /* transfer MODishness etc from LHS arg to RHS arg */ | |
9965 | oright->op_flags = oleft->op_flags; | |
9966 | ||
9967 | /* remove the aassign op and the lhs */ | |
9968 | op_null(o); | |
9969 | op_null(oleft_pushmark); | |
9970 | if (oleft->op_type == OP_RV2AV && cUNOPx(oleft)->op_first) | |
9971 | op_null(cUNOPx(oleft)->op_first); | |
9972 | op_null(oleft); | |
2f9e2db0 VP |
9973 | } |
9974 | ||
3c78429c DM |
9975 | #define MAX_DEFERRED 4 |
9976 | ||
9977 | #define DEFER(o) \ | |
9978 | if (defer_ix == (MAX_DEFERRED-1)) { \ | |
9979 | CALL_RPEEP(defer_queue[defer_base]); \ | |
9980 | defer_base = (defer_base + 1) % MAX_DEFERRED; \ | |
9981 | defer_ix--; \ | |
9982 | } \ | |
9983 | defer_queue[(defer_base + ++defer_ix) % MAX_DEFERRED] = o; | |
9984 | ||
61b743bb DM |
9985 | /* A peephole optimizer. We visit the ops in the order they're to execute. |
9986 | * See the comments at the top of this file for more details about when | |
9987 | * peep() is called */ | |
463ee0b2 | 9988 | |
79072805 | 9989 | void |
1a0a2ba9 | 9990 | Perl_rpeep(pTHX_ register OP *o) |
79072805 | 9991 | { |
27da23d5 | 9992 | dVAR; |
c445ea15 | 9993 | register OP* oldop = NULL; |
3c78429c DM |
9994 | OP* defer_queue[MAX_DEFERRED]; /* small queue of deferred branches */ |
9995 | int defer_base = 0; | |
9996 | int defer_ix = -1; | |
2d8e6c8d | 9997 | |
2814eb74 | 9998 | if (!o || o->op_opt) |
79072805 | 9999 | return; |
a0d0e21e | 10000 | ENTER; |
462e5cf6 | 10001 | SAVEOP(); |
7766f137 | 10002 | SAVEVPTR(PL_curcop); |
3c78429c DM |
10003 | for (;; o = o->op_next) { |
10004 | if (o && o->op_opt) | |
10005 | o = NULL; | |
cd197e1e VP |
10006 | if (!o) { |
10007 | while (defer_ix >= 0) | |
10008 | CALL_RPEEP(defer_queue[(defer_base + defer_ix--) % MAX_DEFERRED]); | |
3c78429c | 10009 | break; |
cd197e1e | 10010 | } |
3c78429c | 10011 | |
6d7dd4a5 NC |
10012 | /* By default, this op has now been optimised. A couple of cases below |
10013 | clear this again. */ | |
10014 | o->op_opt = 1; | |
533c011a | 10015 | PL_op = o; |
a0d0e21e | 10016 | switch (o->op_type) { |
a0d0e21e | 10017 | case OP_DBSTATE: |
3280af22 | 10018 | PL_curcop = ((COP*)o); /* for warnings */ |
a0d0e21e | 10019 | break; |
ac56e7de NC |
10020 | case OP_NEXTSTATE: |
10021 | PL_curcop = ((COP*)o); /* for warnings */ | |
10022 | ||
10023 | /* Two NEXTSTATEs in a row serve no purpose. Except if they happen | |
10024 | to carry two labels. For now, take the easier option, and skip | |
10025 | this optimisation if the first NEXTSTATE has a label. */ | |
bcc76ee3 | 10026 | if (!CopLABEL((COP*)o) && !PERLDB_NOOPT) { |
ac56e7de NC |
10027 | OP *nextop = o->op_next; |
10028 | while (nextop && nextop->op_type == OP_NULL) | |
10029 | nextop = nextop->op_next; | |
10030 | ||
10031 | if (nextop && (nextop->op_type == OP_NEXTSTATE)) { | |
10032 | COP *firstcop = (COP *)o; | |
10033 | COP *secondcop = (COP *)nextop; | |
10034 | /* We want the COP pointed to by o (and anything else) to | |
10035 | become the next COP down the line. */ | |
10036 | cop_free(firstcop); | |
10037 | ||
10038 | firstcop->op_next = secondcop->op_next; | |
10039 | ||
10040 | /* Now steal all its pointers, and duplicate the other | |
10041 | data. */ | |
10042 | firstcop->cop_line = secondcop->cop_line; | |
10043 | #ifdef USE_ITHREADS | |
d4d03940 | 10044 | firstcop->cop_stashoff = secondcop->cop_stashoff; |
ac56e7de NC |
10045 | firstcop->cop_file = secondcop->cop_file; |
10046 | #else | |
10047 | firstcop->cop_stash = secondcop->cop_stash; | |
10048 | firstcop->cop_filegv = secondcop->cop_filegv; | |
10049 | #endif | |
10050 | firstcop->cop_hints = secondcop->cop_hints; | |
10051 | firstcop->cop_seq = secondcop->cop_seq; | |
10052 | firstcop->cop_warnings = secondcop->cop_warnings; | |
10053 | firstcop->cop_hints_hash = secondcop->cop_hints_hash; | |
10054 | ||
10055 | #ifdef USE_ITHREADS | |
d4d03940 | 10056 | secondcop->cop_stashoff = NULL; |
ac56e7de NC |
10057 | secondcop->cop_file = NULL; |
10058 | #else | |
10059 | secondcop->cop_stash = NULL; | |
10060 | secondcop->cop_filegv = NULL; | |
10061 | #endif | |
10062 | secondcop->cop_warnings = NULL; | |
10063 | secondcop->cop_hints_hash = NULL; | |
10064 | ||
10065 | /* If we use op_null(), and hence leave an ex-COP, some | |
10066 | warnings are misreported. For example, the compile-time | |
10067 | error in 'use strict; no strict refs;' */ | |
10068 | secondcop->op_type = OP_NULL; | |
10069 | secondcop->op_ppaddr = PL_ppaddr[OP_NULL]; | |
10070 | } | |
10071 | } | |
10072 | break; | |
a0d0e21e | 10073 | |
df91b2c5 AE |
10074 | case OP_CONCAT: |
10075 | if (o->op_next && o->op_next->op_type == OP_STRINGIFY) { | |
10076 | if (o->op_next->op_private & OPpTARGET_MY) { | |
10077 | if (o->op_flags & OPf_STACKED) /* chained concats */ | |
a6aa0b75 | 10078 | break; /* ignore_optimization */ |
df91b2c5 AE |
10079 | else { |
10080 | /* assert(PL_opargs[o->op_type] & OA_TARGLEX); */ | |
10081 | o->op_targ = o->op_next->op_targ; | |
10082 | o->op_next->op_targ = 0; | |
10083 | o->op_private |= OPpTARGET_MY; | |
10084 | } | |
10085 | } | |
10086 | op_null(o->op_next); | |
10087 | } | |
df91b2c5 | 10088 | break; |
6d7dd4a5 NC |
10089 | case OP_STUB: |
10090 | if ((o->op_flags & OPf_WANT) != OPf_WANT_LIST) { | |
10091 | break; /* Scalar stub must produce undef. List stub is noop */ | |
10092 | } | |
10093 | goto nothin; | |
79072805 | 10094 | case OP_NULL: |
acb36ea4 | 10095 | if (o->op_targ == OP_NEXTSTATE |
5edb5b2a | 10096 | || o->op_targ == OP_DBSTATE) |
acb36ea4 | 10097 | { |
3280af22 | 10098 | PL_curcop = ((COP*)o); |
acb36ea4 | 10099 | } |
dad75012 | 10100 | /* XXX: We avoid setting op_seq here to prevent later calls |
1a0a2ba9 | 10101 | to rpeep() from mistakenly concluding that optimisation |
dad75012 AMS |
10102 | has already occurred. This doesn't fix the real problem, |
10103 | though (See 20010220.007). AMS 20010719 */ | |
2814eb74 | 10104 | /* op_seq functionality is now replaced by op_opt */ |
6d7dd4a5 | 10105 | o->op_opt = 0; |
f46f2f82 | 10106 | /* FALL THROUGH */ |
79072805 | 10107 | case OP_SCALAR: |
93a17b20 | 10108 | case OP_LINESEQ: |
463ee0b2 | 10109 | case OP_SCOPE: |
6d7dd4a5 | 10110 | nothin: |
a0d0e21e LW |
10111 | if (oldop && o->op_next) { |
10112 | oldop->op_next = o->op_next; | |
6d7dd4a5 | 10113 | o->op_opt = 0; |
79072805 LW |
10114 | continue; |
10115 | } | |
79072805 LW |
10116 | break; |
10117 | ||
6a077020 | 10118 | case OP_PADAV: |
79072805 | 10119 | case OP_GV: |
6a077020 | 10120 | if (o->op_type == OP_PADAV || o->op_next->op_type == OP_RV2AV) { |
0bd48802 | 10121 | OP* const pop = (o->op_type == OP_PADAV) ? |
6a077020 | 10122 | o->op_next : o->op_next->op_next; |
a0d0e21e | 10123 | IV i; |
f9dc862f | 10124 | if (pop && pop->op_type == OP_CONST && |
af5acbb4 | 10125 | ((PL_op = pop->op_next)) && |
8990e307 | 10126 | pop->op_next->op_type == OP_AELEM && |
a0d0e21e | 10127 | !(pop->op_next->op_private & |
78f9721b | 10128 | (OPpLVAL_INTRO|OPpLVAL_DEFER|OPpDEREF|OPpMAYBE_LVSUB)) && |
e1dccc0d | 10129 | (i = SvIV(((SVOP*)pop)->op_sv)) <= 255 && i >= 0) |
8990e307 | 10130 | { |
350de78d | 10131 | GV *gv; |
af5acbb4 DM |
10132 | if (cSVOPx(pop)->op_private & OPpCONST_STRICT) |
10133 | no_bareword_allowed(pop); | |
6a077020 DM |
10134 | if (o->op_type == OP_GV) |
10135 | op_null(o->op_next); | |
93c66552 DM |
10136 | op_null(pop->op_next); |
10137 | op_null(pop); | |
a0d0e21e LW |
10138 | o->op_flags |= pop->op_next->op_flags & OPf_MOD; |
10139 | o->op_next = pop->op_next->op_next; | |
22c35a8c | 10140 | o->op_ppaddr = PL_ppaddr[OP_AELEMFAST]; |
a0d0e21e | 10141 | o->op_private = (U8)i; |
6a077020 DM |
10142 | if (o->op_type == OP_GV) { |
10143 | gv = cGVOPo_gv; | |
10144 | GvAVn(gv); | |
93bad3fd | 10145 | o->op_type = OP_AELEMFAST; |
6a077020 DM |
10146 | } |
10147 | else | |
93bad3fd | 10148 | o->op_type = OP_AELEMFAST_LEX; |
6a077020 | 10149 | } |
6a077020 DM |
10150 | break; |
10151 | } | |
10152 | ||
10153 | if (o->op_next->op_type == OP_RV2SV) { | |
10154 | if (!(o->op_next->op_private & OPpDEREF)) { | |
10155 | op_null(o->op_next); | |
10156 | o->op_private |= o->op_next->op_private & (OPpLVAL_INTRO | |
10157 | | OPpOUR_INTRO); | |
10158 | o->op_next = o->op_next->op_next; | |
10159 | o->op_type = OP_GVSV; | |
10160 | o->op_ppaddr = PL_ppaddr[OP_GVSV]; | |
8990e307 | 10161 | } |
79072805 | 10162 | } |
89de2904 AMS |
10163 | else if (o->op_next->op_type == OP_READLINE |
10164 | && o->op_next->op_next->op_type == OP_CONCAT | |
10165 | && (o->op_next->op_next->op_flags & OPf_STACKED)) | |
10166 | { | |
d2c45030 AMS |
10167 | /* Turn "$a .= <FH>" into an OP_RCATLINE. AMS 20010917 */ |
10168 | o->op_type = OP_RCATLINE; | |
10169 | o->op_flags |= OPf_STACKED; | |
10170 | o->op_ppaddr = PL_ppaddr[OP_RCATLINE]; | |
89de2904 | 10171 | op_null(o->op_next->op_next); |
d2c45030 | 10172 | op_null(o->op_next); |
89de2904 | 10173 | } |
76cd736e | 10174 | |
79072805 | 10175 | break; |
867fa1e2 YO |
10176 | |
10177 | { | |
10178 | OP *fop; | |
10179 | OP *sop; | |
10180 | ||
10181 | case OP_NOT: | |
10182 | fop = cUNOP->op_first; | |
10183 | sop = NULL; | |
10184 | goto stitch_keys; | |
10185 | break; | |
10186 | ||
10187 | case OP_AND: | |
79072805 | 10188 | case OP_OR: |
c963b151 | 10189 | case OP_DOR: |
867fa1e2 YO |
10190 | fop = cLOGOP->op_first; |
10191 | sop = fop->op_sibling; | |
10192 | while (cLOGOP->op_other->op_type == OP_NULL) | |
10193 | cLOGOP->op_other = cLOGOP->op_other->op_next; | |
db4d68cf DM |
10194 | while (o->op_next && ( o->op_type == o->op_next->op_type |
10195 | || o->op_next->op_type == OP_NULL)) | |
10196 | o->op_next = o->op_next->op_next; | |
3c78429c | 10197 | DEFER(cLOGOP->op_other); |
867fa1e2 YO |
10198 | |
10199 | stitch_keys: | |
10200 | o->op_opt = 1; | |
10201 | if ((fop->op_type == OP_PADHV || fop->op_type == OP_RV2HV) | |
10202 | || ( sop && | |
10203 | (sop->op_type == OP_PADHV || sop->op_type == OP_RV2HV) | |
10204 | ) | |
10205 | ){ | |
10206 | OP * nop = o; | |
10207 | OP * lop = o; | |
aaf643ce | 10208 | if (!((nop->op_flags & OPf_WANT) == OPf_WANT_VOID)) { |
867fa1e2 YO |
10209 | while (nop && nop->op_next) { |
10210 | switch (nop->op_next->op_type) { | |
10211 | case OP_NOT: | |
10212 | case OP_AND: | |
10213 | case OP_OR: | |
10214 | case OP_DOR: | |
10215 | lop = nop = nop->op_next; | |
10216 | break; | |
10217 | case OP_NULL: | |
10218 | nop = nop->op_next; | |
10219 | break; | |
10220 | default: | |
10221 | nop = NULL; | |
10222 | break; | |
10223 | } | |
10224 | } | |
10225 | } | |
aaf643ce | 10226 | if ((lop->op_flags & OPf_WANT) == OPf_WANT_VOID) { |
867fa1e2 YO |
10227 | if (fop->op_type == OP_PADHV || fop->op_type == OP_RV2HV) |
10228 | cLOGOP->op_first = opt_scalarhv(fop); | |
10229 | if (sop && (sop->op_type == OP_PADHV || sop->op_type == OP_RV2HV)) | |
10230 | cLOGOP->op_first->op_sibling = opt_scalarhv(sop); | |
10231 | } | |
10232 | } | |
10233 | ||
10234 | ||
10235 | break; | |
10236 | } | |
10237 | ||
10238 | case OP_MAPWHILE: | |
10239 | case OP_GREPWHILE: | |
2c2d71f5 JH |
10240 | case OP_ANDASSIGN: |
10241 | case OP_ORASSIGN: | |
c963b151 | 10242 | case OP_DORASSIGN: |
1a67a97c SM |
10243 | case OP_COND_EXPR: |
10244 | case OP_RANGE: | |
c5917253 | 10245 | case OP_ONCE: |
fd4d1407 IZ |
10246 | while (cLOGOP->op_other->op_type == OP_NULL) |
10247 | cLOGOP->op_other = cLOGOP->op_other->op_next; | |
3c78429c | 10248 | DEFER(cLOGOP->op_other); |
79072805 LW |
10249 | break; |
10250 | ||
79072805 | 10251 | case OP_ENTERLOOP: |
9c2ca71a | 10252 | case OP_ENTERITER: |
58cccf98 SM |
10253 | while (cLOOP->op_redoop->op_type == OP_NULL) |
10254 | cLOOP->op_redoop = cLOOP->op_redoop->op_next; | |
58cccf98 SM |
10255 | while (cLOOP->op_nextop->op_type == OP_NULL) |
10256 | cLOOP->op_nextop = cLOOP->op_nextop->op_next; | |
58cccf98 SM |
10257 | while (cLOOP->op_lastop->op_type == OP_NULL) |
10258 | cLOOP->op_lastop = cLOOP->op_lastop->op_next; | |
3c78429c DM |
10259 | /* a while(1) loop doesn't have an op_next that escapes the |
10260 | * loop, so we have to explicitly follow the op_lastop to | |
10261 | * process the rest of the code */ | |
10262 | DEFER(cLOOP->op_lastop); | |
79072805 LW |
10263 | break; |
10264 | ||
79072805 | 10265 | case OP_SUBST: |
29f2e912 NC |
10266 | assert(!(cPMOP->op_pmflags & PMf_ONCE)); |
10267 | while (cPMOP->op_pmstashstartu.op_pmreplstart && | |
10268 | cPMOP->op_pmstashstartu.op_pmreplstart->op_type == OP_NULL) | |
10269 | cPMOP->op_pmstashstartu.op_pmreplstart | |
10270 | = cPMOP->op_pmstashstartu.op_pmreplstart->op_next; | |
3c78429c | 10271 | DEFER(cPMOP->op_pmstashstartu.op_pmreplstart); |
79072805 LW |
10272 | break; |
10273 | ||
fe1bc4cf | 10274 | case OP_SORT: { |
fe1bc4cf | 10275 | /* check that RHS of sort is a single plain array */ |
551405c4 | 10276 | OP *oright = cUNOPo->op_first; |
fe1bc4cf DM |
10277 | if (!oright || oright->op_type != OP_PUSHMARK) |
10278 | break; | |
471178c0 | 10279 | |
540dd770 GG |
10280 | if (o->op_private & OPpSORT_INPLACE) |
10281 | break; | |
10282 | ||
471178c0 NC |
10283 | /* reverse sort ... can be optimised. */ |
10284 | if (!cUNOPo->op_sibling) { | |
10285 | /* Nothing follows us on the list. */ | |
551405c4 | 10286 | OP * const reverse = o->op_next; |
471178c0 NC |
10287 | |
10288 | if (reverse->op_type == OP_REVERSE && | |
10289 | (reverse->op_flags & OPf_WANT) == OPf_WANT_LIST) { | |
551405c4 | 10290 | OP * const pushmark = cUNOPx(reverse)->op_first; |
471178c0 NC |
10291 | if (pushmark && (pushmark->op_type == OP_PUSHMARK) |
10292 | && (cUNOPx(pushmark)->op_sibling == o)) { | |
10293 | /* reverse -> pushmark -> sort */ | |
10294 | o->op_private |= OPpSORT_REVERSE; | |
10295 | op_null(reverse); | |
10296 | pushmark->op_next = oright->op_next; | |
10297 | op_null(oright); | |
10298 | } | |
10299 | } | |
10300 | } | |
10301 | ||
fe1bc4cf DM |
10302 | break; |
10303 | } | |
ef3e5ea9 NC |
10304 | |
10305 | case OP_REVERSE: { | |
e682d7b7 | 10306 | OP *ourmark, *theirmark, *ourlast, *iter, *expushmark, *rv2av; |
ce335f37 | 10307 | OP *gvop = NULL; |
ef3e5ea9 | 10308 | LISTOP *enter, *exlist; |
ef3e5ea9 | 10309 | |
540dd770 | 10310 | if (o->op_private & OPpSORT_INPLACE) |
484c818f | 10311 | break; |
484c818f | 10312 | |
ef3e5ea9 NC |
10313 | enter = (LISTOP *) o->op_next; |
10314 | if (!enter) | |
10315 | break; | |
10316 | if (enter->op_type == OP_NULL) { | |
10317 | enter = (LISTOP *) enter->op_next; | |
10318 | if (!enter) | |
10319 | break; | |
10320 | } | |
d46f46af NC |
10321 | /* for $a (...) will have OP_GV then OP_RV2GV here. |
10322 | for (...) just has an OP_GV. */ | |
ce335f37 NC |
10323 | if (enter->op_type == OP_GV) { |
10324 | gvop = (OP *) enter; | |
10325 | enter = (LISTOP *) enter->op_next; | |
10326 | if (!enter) | |
10327 | break; | |
d46f46af NC |
10328 | if (enter->op_type == OP_RV2GV) { |
10329 | enter = (LISTOP *) enter->op_next; | |
10330 | if (!enter) | |
ce335f37 | 10331 | break; |
d46f46af | 10332 | } |
ce335f37 NC |
10333 | } |
10334 | ||
ef3e5ea9 NC |
10335 | if (enter->op_type != OP_ENTERITER) |
10336 | break; | |
10337 | ||
10338 | iter = enter->op_next; | |
10339 | if (!iter || iter->op_type != OP_ITER) | |
10340 | break; | |
10341 | ||
ce335f37 NC |
10342 | expushmark = enter->op_first; |
10343 | if (!expushmark || expushmark->op_type != OP_NULL | |
10344 | || expushmark->op_targ != OP_PUSHMARK) | |
10345 | break; | |
10346 | ||
10347 | exlist = (LISTOP *) expushmark->op_sibling; | |
ef3e5ea9 NC |
10348 | if (!exlist || exlist->op_type != OP_NULL |
10349 | || exlist->op_targ != OP_LIST) | |
10350 | break; | |
10351 | ||
10352 | if (exlist->op_last != o) { | |
10353 | /* Mmm. Was expecting to point back to this op. */ | |
10354 | break; | |
10355 | } | |
10356 | theirmark = exlist->op_first; | |
10357 | if (!theirmark || theirmark->op_type != OP_PUSHMARK) | |
10358 | break; | |
10359 | ||
c491ecac | 10360 | if (theirmark->op_sibling != o) { |
ef3e5ea9 NC |
10361 | /* There's something between the mark and the reverse, eg |
10362 | for (1, reverse (...)) | |
10363 | so no go. */ | |
10364 | break; | |
10365 | } | |
10366 | ||
c491ecac NC |
10367 | ourmark = ((LISTOP *)o)->op_first; |
10368 | if (!ourmark || ourmark->op_type != OP_PUSHMARK) | |
10369 | break; | |
10370 | ||
ef3e5ea9 NC |
10371 | ourlast = ((LISTOP *)o)->op_last; |
10372 | if (!ourlast || ourlast->op_next != o) | |
10373 | break; | |
10374 | ||
e682d7b7 NC |
10375 | rv2av = ourmark->op_sibling; |
10376 | if (rv2av && rv2av->op_type == OP_RV2AV && rv2av->op_sibling == 0 | |
10377 | && rv2av->op_flags == (OPf_WANT_LIST | OPf_KIDS) | |
10378 | && enter->op_flags == (OPf_WANT_LIST | OPf_KIDS)) { | |
10379 | /* We're just reversing a single array. */ | |
10380 | rv2av->op_flags = OPf_WANT_SCALAR | OPf_KIDS | OPf_REF; | |
10381 | enter->op_flags |= OPf_STACKED; | |
10382 | } | |
10383 | ||
ef3e5ea9 NC |
10384 | /* We don't have control over who points to theirmark, so sacrifice |
10385 | ours. */ | |
10386 | theirmark->op_next = ourmark->op_next; | |
10387 | theirmark->op_flags = ourmark->op_flags; | |
ce335f37 | 10388 | ourlast->op_next = gvop ? gvop : (OP *) enter; |
ef3e5ea9 NC |
10389 | op_null(ourmark); |
10390 | op_null(o); | |
10391 | enter->op_private |= OPpITER_REVERSED; | |
10392 | iter->op_private |= OPpITER_REVERSED; | |
10393 | ||
10394 | break; | |
10395 | } | |
e26df76a | 10396 | |
0477511c NC |
10397 | case OP_QR: |
10398 | case OP_MATCH: | |
29f2e912 NC |
10399 | if (!(cPMOP->op_pmflags & PMf_ONCE)) { |
10400 | assert (!cPMOP->op_pmstashstartu.op_pmreplstart); | |
10401 | } | |
79072805 | 10402 | break; |
1830b3d9 | 10403 | |
1a35f9ff FC |
10404 | case OP_RUNCV: |
10405 | if (!(o->op_private & OPpOFFBYONE) && !CvCLONE(PL_compcv)) { | |
10406 | SV *sv; | |
10407 | if (CvUNIQUE(PL_compcv)) sv = &PL_sv_undef; | |
10408 | else { | |
10409 | sv = newRV((SV *)PL_compcv); | |
10410 | sv_rvweaken(sv); | |
10411 | SvREADONLY_on(sv); | |
10412 | } | |
10413 | o->op_type = OP_CONST; | |
10414 | o->op_ppaddr = PL_ppaddr[OP_CONST]; | |
10415 | o->op_flags |= OPf_SPECIAL; | |
10416 | cSVOPo->op_sv = sv; | |
10417 | } | |
10418 | break; | |
10419 | ||
24fcb59f FC |
10420 | case OP_SASSIGN: |
10421 | if (OP_GIMME(o,0) == G_VOID) { | |
10422 | OP *right = cBINOP->op_first; | |
10423 | if (right) { | |
10424 | OP *left = right->op_sibling; | |
10425 | if (left->op_type == OP_SUBSTR | |
10426 | && (left->op_private & 7) < 4) { | |
10427 | op_null(o); | |
10428 | cBINOP->op_first = left; | |
10429 | right->op_sibling = | |
10430 | cBINOPx(left)->op_first->op_sibling; | |
10431 | cBINOPx(left)->op_first->op_sibling = right; | |
10432 | left->op_private |= OPpSUBSTR_REPL_FIRST; | |
d72a08ce FC |
10433 | left->op_flags = |
10434 | (o->op_flags & ~OPf_WANT) | OPf_WANT_VOID; | |
24fcb59f FC |
10435 | } |
10436 | } | |
10437 | } | |
10438 | break; | |
10439 | ||
1830b3d9 BM |
10440 | case OP_CUSTOM: { |
10441 | Perl_cpeep_t cpeep = | |
10442 | XopENTRY(Perl_custom_op_xop(aTHX_ o), xop_peep); | |
10443 | if (cpeep) | |
10444 | cpeep(aTHX_ o, oldop); | |
10445 | break; | |
10446 | } | |
10447 | ||
79072805 | 10448 | } |
a0d0e21e | 10449 | oldop = o; |
79072805 | 10450 | } |
a0d0e21e | 10451 | LEAVE; |
79072805 | 10452 | } |
beab0874 | 10453 | |
1a0a2ba9 Z |
10454 | void |
10455 | Perl_peep(pTHX_ register OP *o) | |
10456 | { | |
10457 | CALL_RPEEP(o); | |
10458 | } | |
10459 | ||
9733086d BM |
10460 | /* |
10461 | =head1 Custom Operators | |
10462 | ||
10463 | =for apidoc Ao||custom_op_xop | |
10464 | Return the XOP structure for a given custom op. This function should be | |
10465 | considered internal to OP_NAME and the other access macros: use them instead. | |
10466 | ||
10467 | =cut | |
10468 | */ | |
10469 | ||
1830b3d9 BM |
10470 | const XOP * |
10471 | Perl_custom_op_xop(pTHX_ const OP *o) | |
53e06cf0 | 10472 | { |
1830b3d9 BM |
10473 | SV *keysv; |
10474 | HE *he = NULL; | |
10475 | XOP *xop; | |
10476 | ||
10477 | static const XOP xop_null = { 0, 0, 0, 0, 0 }; | |
53e06cf0 | 10478 | |
1830b3d9 BM |
10479 | PERL_ARGS_ASSERT_CUSTOM_OP_XOP; |
10480 | assert(o->op_type == OP_CUSTOM); | |
7918f24d | 10481 | |
1830b3d9 BM |
10482 | /* This is wrong. It assumes a function pointer can be cast to IV, |
10483 | * which isn't guaranteed, but this is what the old custom OP code | |
10484 | * did. In principle it should be safer to Copy the bytes of the | |
10485 | * pointer into a PV: since the new interface is hidden behind | |
10486 | * functions, this can be changed later if necessary. */ | |
10487 | /* Change custom_op_xop if this ever happens */ | |
10488 | keysv = sv_2mortal(newSViv(PTR2IV(o->op_ppaddr))); | |
53e06cf0 | 10489 | |
1830b3d9 BM |
10490 | if (PL_custom_ops) |
10491 | he = hv_fetch_ent(PL_custom_ops, keysv, 0, 0); | |
10492 | ||
10493 | /* assume noone will have just registered a desc */ | |
10494 | if (!he && PL_custom_op_names && | |
10495 | (he = hv_fetch_ent(PL_custom_op_names, keysv, 0, 0)) | |
10496 | ) { | |
10497 | const char *pv; | |
10498 | STRLEN l; | |
10499 | ||
10500 | /* XXX does all this need to be shared mem? */ | |
aca83993 | 10501 | Newxz(xop, 1, XOP); |
1830b3d9 BM |
10502 | pv = SvPV(HeVAL(he), l); |
10503 | XopENTRY_set(xop, xop_name, savepvn(pv, l)); | |
10504 | if (PL_custom_op_descs && | |
10505 | (he = hv_fetch_ent(PL_custom_op_descs, keysv, 0, 0)) | |
10506 | ) { | |
10507 | pv = SvPV(HeVAL(he), l); | |
10508 | XopENTRY_set(xop, xop_desc, savepvn(pv, l)); | |
10509 | } | |
10510 | Perl_custom_op_register(aTHX_ o->op_ppaddr, xop); | |
10511 | return xop; | |
10512 | } | |
53e06cf0 | 10513 | |
1830b3d9 | 10514 | if (!he) return &xop_null; |
53e06cf0 | 10515 | |
1830b3d9 BM |
10516 | xop = INT2PTR(XOP *, SvIV(HeVAL(he))); |
10517 | return xop; | |
53e06cf0 SC |
10518 | } |
10519 | ||
9733086d BM |
10520 | /* |
10521 | =for apidoc Ao||custom_op_register | |
10522 | Register a custom op. See L<perlguts/"Custom Operators">. | |
53e06cf0 | 10523 | |
9733086d BM |
10524 | =cut |
10525 | */ | |
7918f24d | 10526 | |
1830b3d9 BM |
10527 | void |
10528 | Perl_custom_op_register(pTHX_ Perl_ppaddr_t ppaddr, const XOP *xop) | |
10529 | { | |
10530 | SV *keysv; | |
10531 | ||
10532 | PERL_ARGS_ASSERT_CUSTOM_OP_REGISTER; | |
53e06cf0 | 10533 | |
1830b3d9 BM |
10534 | /* see the comment in custom_op_xop */ |
10535 | keysv = sv_2mortal(newSViv(PTR2IV(ppaddr))); | |
53e06cf0 | 10536 | |
1830b3d9 BM |
10537 | if (!PL_custom_ops) |
10538 | PL_custom_ops = newHV(); | |
53e06cf0 | 10539 | |
1830b3d9 BM |
10540 | if (!hv_store_ent(PL_custom_ops, keysv, newSViv(PTR2IV(xop)), 0)) |
10541 | Perl_croak(aTHX_ "panic: can't register custom OP %s", xop->xop_name); | |
53e06cf0 | 10542 | } |
19e8ce8e | 10543 | |
b8c38f0a FC |
10544 | /* |
10545 | =head1 Functions in file op.c | |
10546 | ||
10547 | =for apidoc core_prototype | |
10548 | This function assigns the prototype of the named core function to C<sv>, or | |
10549 | to a new mortal SV if C<sv> is NULL. It returns the modified C<sv>, or | |
a051f6c4 | 10550 | NULL if the core function has no prototype. C<code> is a code as returned |
4e338c21 | 10551 | by C<keyword()>. It must not be equal to 0 or -KEY_CORE. |
b8c38f0a FC |
10552 | |
10553 | =cut | |
10554 | */ | |
10555 | ||
10556 | SV * | |
be1b855b | 10557 | Perl_core_prototype(pTHX_ SV *sv, const char *name, const int code, |
b66130dd | 10558 | int * const opnum) |
b8c38f0a | 10559 | { |
b8c38f0a FC |
10560 | int i = 0, n = 0, seen_question = 0, defgv = 0; |
10561 | I32 oa; | |
10562 | #define MAX_ARGS_OP ((sizeof(I32) - 1) * 2) | |
10563 | char str[ MAX_ARGS_OP * 2 + 2 ]; /* One ';', one '\0' */ | |
9927957a | 10564 | bool nullret = FALSE; |
b8c38f0a FC |
10565 | |
10566 | PERL_ARGS_ASSERT_CORE_PROTOTYPE; | |
10567 | ||
4e338c21 | 10568 | assert (code && code != -KEY_CORE); |
b8c38f0a FC |
10569 | |
10570 | if (!sv) sv = sv_newmortal(); | |
10571 | ||
9927957a | 10572 | #define retsetpvs(x,y) sv_setpvs(sv, x); if(opnum) *opnum=(y); return sv |
b8c38f0a | 10573 | |
4e338c21 | 10574 | switch (code < 0 ? -code : code) { |
b8c38f0a | 10575 | case KEY_and : case KEY_chop: case KEY_chomp: |
4e338c21 FC |
10576 | case KEY_cmp : case KEY_defined: case KEY_delete: case KEY_exec : |
10577 | case KEY_exists: case KEY_eq : case KEY_ge : case KEY_goto : | |
10578 | case KEY_grep : case KEY_gt : case KEY_last : case KEY_le : | |
10579 | case KEY_lt : case KEY_map : case KEY_ne : case KEY_next : | |
10580 | case KEY_or : case KEY_print : case KEY_printf: case KEY_qr : | |
10581 | case KEY_redo : case KEY_require: case KEY_return: case KEY_say : | |
10582 | case KEY_select: case KEY_sort : case KEY_split : case KEY_system: | |
10583 | case KEY_x : case KEY_xor : | |
9927957a | 10584 | if (!opnum) return NULL; nullret = TRUE; goto findopnum; |
4e338c21 | 10585 | case KEY_glob: retsetpvs("_;", OP_GLOB); |
9927957a FC |
10586 | case KEY_keys: retsetpvs("+", OP_KEYS); |
10587 | case KEY_values: retsetpvs("+", OP_VALUES); | |
10588 | case KEY_each: retsetpvs("+", OP_EACH); | |
10589 | case KEY_push: retsetpvs("+@", OP_PUSH); | |
10590 | case KEY_unshift: retsetpvs("+@", OP_UNSHIFT); | |
10591 | case KEY_pop: retsetpvs(";+", OP_POP); | |
10592 | case KEY_shift: retsetpvs(";+", OP_SHIFT); | |
4e338c21 | 10593 | case KEY_pos: retsetpvs(";\\[$*]", OP_POS); |
b8c38f0a | 10594 | case KEY_splice: |
9927957a | 10595 | retsetpvs("+;$$@", OP_SPLICE); |
b8c38f0a | 10596 | case KEY___FILE__: case KEY___LINE__: case KEY___PACKAGE__: |
9927957a | 10597 | retsetpvs("", 0); |
7d789282 FC |
10598 | case KEY_evalbytes: |
10599 | name = "entereval"; break; | |
b8c38f0a FC |
10600 | case KEY_readpipe: |
10601 | name = "backtick"; | |
10602 | } | |
10603 | ||
10604 | #undef retsetpvs | |
10605 | ||
9927957a | 10606 | findopnum: |
b8c38f0a FC |
10607 | while (i < MAXO) { /* The slow way. */ |
10608 | if (strEQ(name, PL_op_name[i]) | |
10609 | || strEQ(name, PL_op_desc[i])) | |
10610 | { | |
9927957a | 10611 | if (nullret) { assert(opnum); *opnum = i; return NULL; } |
b8c38f0a FC |
10612 | goto found; |
10613 | } | |
10614 | i++; | |
10615 | } | |
4e338c21 | 10616 | return NULL; |
b8c38f0a FC |
10617 | found: |
10618 | defgv = PL_opargs[i] & OA_DEFGV; | |
10619 | oa = PL_opargs[i] >> OASHIFT; | |
10620 | while (oa) { | |
465bc0f5 | 10621 | if (oa & OA_OPTIONAL && !seen_question && ( |
ea5703f4 | 10622 | !defgv || (oa & (OA_OPTIONAL - 1)) == OA_FILEREF |
465bc0f5 | 10623 | )) { |
b8c38f0a FC |
10624 | seen_question = 1; |
10625 | str[n++] = ';'; | |
10626 | } | |
10627 | if ((oa & (OA_OPTIONAL - 1)) >= OA_AVREF | |
10628 | && (oa & (OA_OPTIONAL - 1)) <= OA_SCALARREF | |
10629 | /* But globs are already references (kinda) */ | |
10630 | && (oa & (OA_OPTIONAL - 1)) != OA_FILEREF | |
10631 | ) { | |
10632 | str[n++] = '\\'; | |
10633 | } | |
1ecbeecf FC |
10634 | if ((oa & (OA_OPTIONAL - 1)) == OA_SCALARREF |
10635 | && !scalar_mod_type(NULL, i)) { | |
10636 | str[n++] = '['; | |
10637 | str[n++] = '$'; | |
10638 | str[n++] = '@'; | |
10639 | str[n++] = '%'; | |
89c5c07e | 10640 | if (i == OP_LOCK || i == OP_UNDEF) str[n++] = '&'; |
1ecbeecf FC |
10641 | str[n++] = '*'; |
10642 | str[n++] = ']'; | |
10643 | } | |
10644 | else str[n++] = ("?$@@%&*$")[oa & (OA_OPTIONAL - 1)]; | |
ea5703f4 FC |
10645 | if (oa & OA_OPTIONAL && defgv && str[n-1] == '$') { |
10646 | str[n-1] = '_'; defgv = 0; | |
10647 | } | |
b8c38f0a FC |
10648 | oa = oa >> 4; |
10649 | } | |
dcbdef25 | 10650 | if (code == -KEY_not || code == -KEY_getprotobynumber) str[n++] = ';'; |
b8c38f0a FC |
10651 | str[n++] = '\0'; |
10652 | sv_setpvn(sv, str, n - 1); | |
9927957a | 10653 | if (opnum) *opnum = i; |
b8c38f0a FC |
10654 | return sv; |
10655 | } | |
10656 | ||
1e4b6aa1 FC |
10657 | OP * |
10658 | Perl_coresub_op(pTHX_ SV * const coreargssv, const int code, | |
10659 | const int opnum) | |
10660 | { | |
10661 | OP * const argop = newSVOP(OP_COREARGS,0,coreargssv); | |
c931b036 | 10662 | OP *o; |
1e4b6aa1 FC |
10663 | |
10664 | PERL_ARGS_ASSERT_CORESUB_OP; | |
10665 | ||
10666 | switch(opnum) { | |
10667 | case 0: | |
c2f605db | 10668 | return op_append_elem(OP_LINESEQ, |
1e4b6aa1 FC |
10669 | argop, |
10670 | newSLICEOP(0, | |
c2f605db | 10671 | newSVOP(OP_CONST, 0, newSViv(-code % 3)), |
1e4b6aa1 FC |
10672 | newOP(OP_CALLER,0) |
10673 | ) | |
c2f605db | 10674 | ); |
720d5b2f FC |
10675 | case OP_SELECT: /* which represents OP_SSELECT as well */ |
10676 | if (code) | |
10677 | return newCONDOP( | |
10678 | 0, | |
10679 | newBINOP(OP_GT, 0, | |
10680 | newAVREF(newGVOP(OP_GV, 0, PL_defgv)), | |
10681 | newSVOP(OP_CONST, 0, newSVuv(1)) | |
10682 | ), | |
10683 | coresub_op(newSVuv((UV)OP_SSELECT), 0, | |
10684 | OP_SSELECT), | |
10685 | coresub_op(coreargssv, 0, OP_SELECT) | |
10686 | ); | |
10687 | /* FALL THROUGH */ | |
1e4b6aa1 FC |
10688 | default: |
10689 | switch (PL_opargs[opnum] & OA_CLASS_MASK) { | |
10690 | case OA_BASEOP: | |
10691 | return op_append_elem( | |
10692 | OP_LINESEQ, argop, | |
10693 | newOP(opnum, | |
84ed0108 FC |
10694 | opnum == OP_WANTARRAY || opnum == OP_RUNCV |
10695 | ? OPpOFFBYONE << 8 : 0) | |
1e4b6aa1 | 10696 | ); |
527d644b | 10697 | case OA_BASEOP_OR_UNOP: |
7d789282 FC |
10698 | if (opnum == OP_ENTEREVAL) { |
10699 | o = newUNOP(OP_ENTEREVAL,OPpEVAL_COPHH<<8,argop); | |
10700 | if (code == -KEY_evalbytes) o->op_private |= OPpEVAL_BYTES; | |
10701 | } | |
10702 | else o = newUNOP(opnum,0,argop); | |
ce0b554b FC |
10703 | if (opnum == OP_CALLER) o->op_private |= OPpOFFBYONE; |
10704 | else { | |
c931b036 | 10705 | onearg: |
ce0b554b | 10706 | if (is_handle_constructor(o, 1)) |
c931b036 | 10707 | argop->op_private |= OPpCOREARGS_DEREF1; |
1efec5ed FC |
10708 | if (scalar_mod_type(NULL, opnum)) |
10709 | argop->op_private |= OPpCOREARGS_SCALARMOD; | |
ce0b554b | 10710 | } |
c931b036 | 10711 | return o; |
527d644b | 10712 | default: |
498a02d8 | 10713 | o = convert(opnum,OPf_SPECIAL*(opnum == OP_GLOB),argop); |
c931b036 FC |
10714 | if (is_handle_constructor(o, 2)) |
10715 | argop->op_private |= OPpCOREARGS_DEREF2; | |
7bc95ae1 FC |
10716 | if (opnum == OP_SUBSTR) { |
10717 | o->op_private |= OPpMAYBE_LVSUB; | |
10718 | return o; | |
10719 | } | |
10720 | else goto onearg; | |
1e4b6aa1 FC |
10721 | } |
10722 | } | |
10723 | } | |
10724 | ||
156d738f FC |
10725 | void |
10726 | Perl_report_redefined_cv(pTHX_ const SV *name, const CV *old_cv, | |
10727 | SV * const *new_const_svp) | |
10728 | { | |
10729 | const char *hvname; | |
10730 | bool is_const = !!CvCONST(old_cv); | |
10731 | SV *old_const_sv = is_const ? cv_const_sv(old_cv) : NULL; | |
10732 | ||
10733 | PERL_ARGS_ASSERT_REPORT_REDEFINED_CV; | |
10734 | ||
10735 | if (is_const && new_const_svp && old_const_sv == *new_const_svp) | |
10736 | return; | |
10737 | /* They are 2 constant subroutines generated from | |
10738 | the same constant. This probably means that | |
10739 | they are really the "same" proxy subroutine | |
10740 | instantiated in 2 places. Most likely this is | |
10741 | when a constant is exported twice. Don't warn. | |
10742 | */ | |
10743 | if ( | |
10744 | (ckWARN(WARN_REDEFINE) | |
10745 | && !( | |
10746 | CvGV(old_cv) && GvSTASH(CvGV(old_cv)) | |
10747 | && HvNAMELEN(GvSTASH(CvGV(old_cv))) == 7 | |
10748 | && (hvname = HvNAME(GvSTASH(CvGV(old_cv))), | |
10749 | strEQ(hvname, "autouse")) | |
10750 | ) | |
10751 | ) | |
10752 | || (is_const | |
10753 | && ckWARN_d(WARN_REDEFINE) | |
10754 | && (!new_const_svp || sv_cmp(old_const_sv, *new_const_svp)) | |
10755 | ) | |
10756 | ) | |
10757 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), | |
10758 | is_const | |
10759 | ? "Constant subroutine %"SVf" redefined" | |
10760 | : "Subroutine %"SVf" redefined", | |
10761 | name); | |
10762 | } | |
10763 | ||
e8570548 Z |
10764 | /* |
10765 | =head1 Hook manipulation | |
10766 | ||
10767 | These functions provide convenient and thread-safe means of manipulating | |
10768 | hook variables. | |
10769 | ||
10770 | =cut | |
10771 | */ | |
10772 | ||
10773 | /* | |
10774 | =for apidoc Am|void|wrap_op_checker|Optype opcode|Perl_check_t new_checker|Perl_check_t *old_checker_p | |
10775 | ||
10776 | Puts a C function into the chain of check functions for a specified op | |
10777 | type. This is the preferred way to manipulate the L</PL_check> array. | |
10778 | I<opcode> specifies which type of op is to be affected. I<new_checker> | |
10779 | is a pointer to the C function that is to be added to that opcode's | |
10780 | check chain, and I<old_checker_p> points to the storage location where a | |
10781 | pointer to the next function in the chain will be stored. The value of | |
10782 | I<new_pointer> is written into the L</PL_check> array, while the value | |
10783 | previously stored there is written to I<*old_checker_p>. | |
10784 | ||
10785 | L</PL_check> is global to an entire process, and a module wishing to | |
10786 | hook op checking may find itself invoked more than once per process, | |
10787 | typically in different threads. To handle that situation, this function | |
10788 | is idempotent. The location I<*old_checker_p> must initially (once | |
10789 | per process) contain a null pointer. A C variable of static duration | |
10790 | (declared at file scope, typically also marked C<static> to give | |
10791 | it internal linkage) will be implicitly initialised appropriately, | |
10792 | if it does not have an explicit initialiser. This function will only | |
10793 | actually modify the check chain if it finds I<*old_checker_p> to be null. | |
10794 | This function is also thread safe on the small scale. It uses appropriate | |
10795 | locking to avoid race conditions in accessing L</PL_check>. | |
10796 | ||
10797 | When this function is called, the function referenced by I<new_checker> | |
10798 | must be ready to be called, except for I<*old_checker_p> being unfilled. | |
10799 | In a threading situation, I<new_checker> may be called immediately, | |
10800 | even before this function has returned. I<*old_checker_p> will always | |
10801 | be appropriately set before I<new_checker> is called. If I<new_checker> | |
10802 | decides not to do anything special with an op that it is given (which | |
10803 | is the usual case for most uses of op check hooking), it must chain the | |
10804 | check function referenced by I<*old_checker_p>. | |
10805 | ||
10806 | If you want to influence compilation of calls to a specific subroutine, | |
10807 | then use L</cv_set_call_checker> rather than hooking checking of all | |
10808 | C<entersub> ops. | |
10809 | ||
10810 | =cut | |
10811 | */ | |
10812 | ||
10813 | void | |
10814 | Perl_wrap_op_checker(pTHX_ Optype opcode, | |
10815 | Perl_check_t new_checker, Perl_check_t *old_checker_p) | |
10816 | { | |
9b11155f TC |
10817 | dVAR; |
10818 | ||
e8570548 Z |
10819 | PERL_ARGS_ASSERT_WRAP_OP_CHECKER; |
10820 | if (*old_checker_p) return; | |
10821 | OP_CHECK_MUTEX_LOCK; | |
10822 | if (!*old_checker_p) { | |
10823 | *old_checker_p = PL_check[opcode]; | |
10824 | PL_check[opcode] = new_checker; | |
10825 | } | |
10826 | OP_CHECK_MUTEX_UNLOCK; | |
10827 | } | |
10828 | ||
beab0874 JT |
10829 | #include "XSUB.h" |
10830 | ||
10831 | /* Efficient sub that returns a constant scalar value. */ | |
10832 | static void | |
acfe0abc | 10833 | const_sv_xsub(pTHX_ CV* cv) |
beab0874 | 10834 | { |
97aff369 | 10835 | dVAR; |
beab0874 | 10836 | dXSARGS; |
99ab892b | 10837 | SV *const sv = MUTABLE_SV(XSANY.any_ptr); |
9cbac4c7 | 10838 | if (items != 0) { |
6f207bd3 | 10839 | NOOP; |
9cbac4c7 | 10840 | #if 0 |
fe13d51d | 10841 | /* diag_listed_as: SKIPME */ |
9cbac4c7 | 10842 | Perl_croak(aTHX_ "usage: %s::%s()", |
bfcb3514 | 10843 | HvNAME_get(GvSTASH(CvGV(cv))), GvNAME(CvGV(cv))); |
9cbac4c7 DM |
10844 | #endif |
10845 | } | |
99ab892b NC |
10846 | if (!sv) { |
10847 | XSRETURN(0); | |
10848 | } | |
9a049f1c | 10849 | EXTEND(sp, 1); |
99ab892b | 10850 | ST(0) = sv; |
beab0874 JT |
10851 | XSRETURN(1); |
10852 | } | |
4946a0fa NC |
10853 | |
10854 | /* | |
10855 | * Local variables: | |
10856 | * c-indentation-style: bsd | |
10857 | * c-basic-offset: 4 | |
14d04a33 | 10858 | * indent-tabs-mode: nil |
4946a0fa NC |
10859 | * End: |
10860 | * | |
14d04a33 | 10861 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 10862 | */ |