Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* op.c |
79072805 | 2 | * |
4bb101f2 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
cbdf9ef8 | 4 | * 2000, 2001, 2002, 2003, 2004, 2005, by Larry Wall and others |
79072805 LW |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public | |
7 | * License or the Artistic License, as specified in the README file. | |
8 | * | |
a0d0e21e LW |
9 | */ |
10 | ||
11 | /* | |
12 | * "You see: Mr. Drogo, he married poor Miss Primula Brandybuck. She was | |
13 | * our Mr. Bilbo's first cousin on the mother's side (her mother being the | |
14 | * youngest of the Old Took's daughters); and Mr. Drogo was his second | |
15 | * cousin. So Mr. Frodo is his first *and* second cousin, once removed | |
16 | * either way, as the saying is, if you follow me." --the Gaffer | |
79072805 LW |
17 | */ |
18 | ||
166f8a29 DM |
19 | /* This file contains the functions that create, manipulate and optimize |
20 | * the OP structures that hold a compiled perl program. | |
21 | * | |
22 | * A Perl program is compiled into a tree of OPs. Each op contains | |
23 | * structural pointers (eg to its siblings and the next op in the | |
24 | * execution sequence), a pointer to the function that would execute the | |
25 | * op, plus any data specific to that op. For example, an OP_CONST op | |
26 | * points to the pp_const() function and to an SV containing the constant | |
27 | * value. When pp_const() is executed, its job is to push that SV onto the | |
28 | * stack. | |
29 | * | |
30 | * OPs are mainly created by the newFOO() functions, which are mainly | |
31 | * called from the parser (in perly.y) as the code is parsed. For example | |
32 | * the Perl code $a + $b * $c would cause the equivalent of the following | |
33 | * to be called (oversimplifying a bit): | |
34 | * | |
35 | * newBINOP(OP_ADD, flags, | |
36 | * newSVREF($a), | |
37 | * newBINOP(OP_MULTIPLY, flags, newSVREF($b), newSVREF($c)) | |
38 | * ) | |
39 | * | |
40 | * Note that during the build of miniperl, a temporary copy of this file | |
41 | * is made, called opmini.c. | |
42 | */ | |
ccfc67b7 | 43 | |
61b743bb DM |
44 | /* |
45 | Perl's compiler is essentially a 3-pass compiler with interleaved phases: | |
46 | ||
47 | A bottom-up pass | |
48 | A top-down pass | |
49 | An execution-order pass | |
50 | ||
51 | The bottom-up pass is represented by all the "newOP" routines and | |
52 | the ck_ routines. The bottom-upness is actually driven by yacc. | |
53 | So at the point that a ck_ routine fires, we have no idea what the | |
54 | context is, either upward in the syntax tree, or either forward or | |
55 | backward in the execution order. (The bottom-up parser builds that | |
56 | part of the execution order it knows about, but if you follow the "next" | |
57 | links around, you'll find it's actually a closed loop through the | |
58 | top level node. | |
59 | ||
60 | Whenever the bottom-up parser gets to a node that supplies context to | |
61 | its components, it invokes that portion of the top-down pass that applies | |
62 | to that part of the subtree (and marks the top node as processed, so | |
63 | if a node further up supplies context, it doesn't have to take the | |
64 | plunge again). As a particular subcase of this, as the new node is | |
65 | built, it takes all the closed execution loops of its subcomponents | |
66 | and links them into a new closed loop for the higher level node. But | |
67 | it's still not the real execution order. | |
68 | ||
69 | The actual execution order is not known till we get a grammar reduction | |
70 | to a top-level unit like a subroutine or file that will be called by | |
71 | "name" rather than via a "next" pointer. At that point, we can call | |
72 | into peep() to do that code's portion of the 3rd pass. It has to be | |
73 | recursive, but it's recursive on basic blocks, not on tree nodes. | |
74 | */ | |
75 | ||
79072805 | 76 | #include "EXTERN.h" |
864dbfa3 | 77 | #define PERL_IN_OP_C |
79072805 | 78 | #include "perl.h" |
77ca0c92 | 79 | #include "keywords.h" |
79072805 | 80 | |
a07e034d | 81 | #define CALL_PEEP(o) CALL_FPTR(PL_peepp)(aTHX_ o) |
a2efc822 | 82 | |
238a4c30 NIS |
83 | #if defined(PL_OP_SLAB_ALLOC) |
84 | ||
85 | #ifndef PERL_SLAB_SIZE | |
86 | #define PERL_SLAB_SIZE 2048 | |
87 | #endif | |
88 | ||
c7e45529 AE |
89 | void * |
90 | Perl_Slab_Alloc(pTHX_ int m, size_t sz) | |
1c846c1f | 91 | { |
5a8e194f NIS |
92 | /* |
93 | * To make incrementing use count easy PL_OpSlab is an I32 * | |
94 | * To make inserting the link to slab PL_OpPtr is I32 ** | |
95 | * So compute size in units of sizeof(I32 *) as that is how Pl_OpPtr increments | |
96 | * Add an overhead for pointer to slab and round up as a number of pointers | |
97 | */ | |
98 | sz = (sz + 2*sizeof(I32 *) -1)/sizeof(I32 *); | |
238a4c30 | 99 | if ((PL_OpSpace -= sz) < 0) { |
083fcd59 JH |
100 | PL_OpPtr = (I32 **) PerlMemShared_malloc(PERL_SLAB_SIZE*sizeof(I32*)); |
101 | if (!PL_OpPtr) { | |
238a4c30 NIS |
102 | return NULL; |
103 | } | |
5a8e194f NIS |
104 | Zero(PL_OpPtr,PERL_SLAB_SIZE,I32 **); |
105 | /* We reserve the 0'th I32 sized chunk as a use count */ | |
106 | PL_OpSlab = (I32 *) PL_OpPtr; | |
107 | /* Reduce size by the use count word, and by the size we need. | |
108 | * Latter is to mimic the '-=' in the if() above | |
109 | */ | |
110 | PL_OpSpace = PERL_SLAB_SIZE - (sizeof(I32)+sizeof(I32 **)-1)/sizeof(I32 **) - sz; | |
238a4c30 NIS |
111 | /* Allocation pointer starts at the top. |
112 | Theory: because we build leaves before trunk allocating at end | |
113 | means that at run time access is cache friendly upward | |
114 | */ | |
5a8e194f | 115 | PL_OpPtr += PERL_SLAB_SIZE; |
238a4c30 NIS |
116 | } |
117 | assert( PL_OpSpace >= 0 ); | |
118 | /* Move the allocation pointer down */ | |
119 | PL_OpPtr -= sz; | |
5a8e194f | 120 | assert( PL_OpPtr > (I32 **) PL_OpSlab ); |
238a4c30 NIS |
121 | *PL_OpPtr = PL_OpSlab; /* Note which slab it belongs to */ |
122 | (*PL_OpSlab)++; /* Increment use count of slab */ | |
5a8e194f | 123 | assert( PL_OpPtr+sz <= ((I32 **) PL_OpSlab + PERL_SLAB_SIZE) ); |
238a4c30 NIS |
124 | assert( *PL_OpSlab > 0 ); |
125 | return (void *)(PL_OpPtr + 1); | |
126 | } | |
127 | ||
c7e45529 AE |
128 | void |
129 | Perl_Slab_Free(pTHX_ void *op) | |
238a4c30 | 130 | { |
5a8e194f NIS |
131 | I32 **ptr = (I32 **) op; |
132 | I32 *slab = ptr[-1]; | |
133 | assert( ptr-1 > (I32 **) slab ); | |
134 | assert( ptr < ( (I32 **) slab + PERL_SLAB_SIZE) ); | |
238a4c30 NIS |
135 | assert( *slab > 0 ); |
136 | if (--(*slab) == 0) { | |
7e4e8c89 NC |
137 | # ifdef NETWARE |
138 | # define PerlMemShared PerlMem | |
139 | # endif | |
083fcd59 JH |
140 | |
141 | PerlMemShared_free(slab); | |
238a4c30 NIS |
142 | if (slab == PL_OpSlab) { |
143 | PL_OpSpace = 0; | |
144 | } | |
145 | } | |
b7dc083c | 146 | } |
b7dc083c | 147 | #endif |
e50aee73 | 148 | /* |
5dc0d613 | 149 | * In the following definition, the ", Nullop" is just to make the compiler |
a5f75d66 | 150 | * think the expression is of the right type: croak actually does a Siglongjmp. |
e50aee73 | 151 | */ |
11343788 | 152 | #define CHECKOP(type,o) \ |
3280af22 | 153 | ((PL_op_mask && PL_op_mask[type]) \ |
5dc0d613 | 154 | ? ( op_free((OP*)o), \ |
cb77fdf0 | 155 | Perl_croak(aTHX_ "'%s' trapped by operation mask", PL_op_desc[type]), \ |
28757baa | 156 | Nullop ) \ |
fc0dc3b3 | 157 | : CALL_FPTR(PL_check[type])(aTHX_ (OP*)o)) |
e50aee73 | 158 | |
e6438c1a | 159 | #define RETURN_UNLIMITED_NUMBER (PERL_INT_MAX / 2) |
c53d7c7d | 160 | |
8b6b16e7 | 161 | STATIC const char* |
cea2e8a9 | 162 | S_gv_ename(pTHX_ GV *gv) |
4633a7c4 LW |
163 | { |
164 | SV* tmpsv = sv_newmortal(); | |
46fc3d4c | 165 | gv_efullname3(tmpsv, gv, Nullch); |
8b6b16e7 | 166 | return SvPV_nolen_const(tmpsv); |
4633a7c4 LW |
167 | } |
168 | ||
76e3520e | 169 | STATIC OP * |
cea2e8a9 | 170 | S_no_fh_allowed(pTHX_ OP *o) |
79072805 | 171 | { |
cea2e8a9 | 172 | yyerror(Perl_form(aTHX_ "Missing comma after first argument to %s function", |
53e06cf0 | 173 | OP_DESC(o))); |
11343788 | 174 | return o; |
79072805 LW |
175 | } |
176 | ||
76e3520e | 177 | STATIC OP * |
bfed75c6 | 178 | S_too_few_arguments(pTHX_ OP *o, const char *name) |
79072805 | 179 | { |
cea2e8a9 | 180 | yyerror(Perl_form(aTHX_ "Not enough arguments for %s", name)); |
11343788 | 181 | return o; |
79072805 LW |
182 | } |
183 | ||
76e3520e | 184 | STATIC OP * |
bfed75c6 | 185 | S_too_many_arguments(pTHX_ OP *o, const char *name) |
79072805 | 186 | { |
cea2e8a9 | 187 | yyerror(Perl_form(aTHX_ "Too many arguments for %s", name)); |
11343788 | 188 | return o; |
79072805 LW |
189 | } |
190 | ||
76e3520e | 191 | STATIC void |
6867be6d | 192 | S_bad_type(pTHX_ I32 n, const char *t, const char *name, const OP *kid) |
8990e307 | 193 | { |
cea2e8a9 | 194 | yyerror(Perl_form(aTHX_ "Type of arg %d to %s must be %s (not %s)", |
53e06cf0 | 195 | (int)n, name, t, OP_DESC(kid))); |
8990e307 LW |
196 | } |
197 | ||
7a52d87a | 198 | STATIC void |
6867be6d | 199 | S_no_bareword_allowed(pTHX_ const OP *o) |
7a52d87a | 200 | { |
5a844595 | 201 | qerror(Perl_mess(aTHX_ |
35c1215d NC |
202 | "Bareword \"%"SVf"\" not allowed while \"strict subs\" in use", |
203 | cSVOPo_sv)); | |
7a52d87a GS |
204 | } |
205 | ||
79072805 LW |
206 | /* "register" allocation */ |
207 | ||
208 | PADOFFSET | |
dd2155a4 | 209 | Perl_allocmy(pTHX_ char *name) |
93a17b20 | 210 | { |
a0d0e21e | 211 | PADOFFSET off; |
a0d0e21e | 212 | |
59f00321 | 213 | /* complain about "my $<special_var>" etc etc */ |
155aba94 GS |
214 | if (!(PL_in_my == KEY_our || |
215 | isALPHA(name[1]) || | |
39e02b42 | 216 | (USE_UTF8_IN_NAMES && UTF8_IS_START(name[1])) || |
59f00321 | 217 | (name[1] == '_' && (*name == '$' || (int)strlen(name) > 2)))) |
834a4ddd | 218 | { |
c4d0567e | 219 | if (!isPRINT(name[1]) || strchr("\t\n\r\f", name[1])) { |
2b92dfce GS |
220 | /* 1999-02-27 mjd@plover.com */ |
221 | char *p; | |
222 | p = strchr(name, '\0'); | |
223 | /* The next block assumes the buffer is at least 205 chars | |
224 | long. At present, it's always at least 256 chars. */ | |
225 | if (p-name > 200) { | |
226 | strcpy(name+200, "..."); | |
227 | p = name+199; | |
228 | } | |
229 | else { | |
230 | p[1] = '\0'; | |
231 | } | |
232 | /* Move everything else down one character */ | |
233 | for (; p-name > 2; p--) | |
234 | *p = *(p-1); | |
46fc3d4c | 235 | name[2] = toCTRL(name[1]); |
236 | name[1] = '^'; | |
237 | } | |
cea2e8a9 | 238 | yyerror(Perl_form(aTHX_ "Can't use global %s in \"my\"",name)); |
a0d0e21e | 239 | } |
748a9306 | 240 | |
dd2155a4 DM |
241 | /* check for duplicate declaration */ |
242 | pad_check_dup(name, | |
c5661c80 | 243 | (bool)(PL_in_my == KEY_our), |
dd2155a4 DM |
244 | (PL_curstash ? PL_curstash : PL_defstash) |
245 | ); | |
33b8ce05 | 246 | |
dd2155a4 DM |
247 | if (PL_in_my_stash && *name != '$') { |
248 | yyerror(Perl_form(aTHX_ | |
249 | "Can't declare class for non-scalar %s in \"%s\"", | |
250 | name, PL_in_my == KEY_our ? "our" : "my")); | |
6b35e009 GS |
251 | } |
252 | ||
dd2155a4 | 253 | /* allocate a spare slot and store the name in that slot */ |
93a17b20 | 254 | |
dd2155a4 DM |
255 | off = pad_add_name(name, |
256 | PL_in_my_stash, | |
257 | (PL_in_my == KEY_our | |
133706a6 RGS |
258 | /* $_ is always in main::, even with our */ |
259 | ? (PL_curstash && !strEQ(name,"$_") ? PL_curstash : PL_defstash) | |
dd2155a4 DM |
260 | : Nullhv |
261 | ), | |
262 | 0 /* not fake */ | |
263 | ); | |
264 | return off; | |
79072805 LW |
265 | } |
266 | ||
79072805 LW |
267 | /* Destructor */ |
268 | ||
269 | void | |
864dbfa3 | 270 | Perl_op_free(pTHX_ OP *o) |
79072805 | 271 | { |
27da23d5 | 272 | dVAR; |
acb36ea4 | 273 | OPCODE type; |
4026c95a | 274 | PADOFFSET refcnt; |
79072805 | 275 | |
2814eb74 | 276 | if (!o || o->op_static) |
79072805 LW |
277 | return; |
278 | ||
7934575e GS |
279 | if (o->op_private & OPpREFCOUNTED) { |
280 | switch (o->op_type) { | |
281 | case OP_LEAVESUB: | |
282 | case OP_LEAVESUBLV: | |
283 | case OP_LEAVEEVAL: | |
284 | case OP_LEAVE: | |
285 | case OP_SCOPE: | |
286 | case OP_LEAVEWRITE: | |
287 | OP_REFCNT_LOCK; | |
4026c95a | 288 | refcnt = OpREFCNT_dec(o); |
7934575e | 289 | OP_REFCNT_UNLOCK; |
4026c95a SH |
290 | if (refcnt) |
291 | return; | |
7934575e GS |
292 | break; |
293 | default: | |
294 | break; | |
295 | } | |
296 | } | |
297 | ||
11343788 | 298 | if (o->op_flags & OPf_KIDS) { |
6867be6d | 299 | register OP *kid, *nextkid; |
11343788 | 300 | for (kid = cUNOPo->op_first; kid; kid = nextkid) { |
85e6fe83 | 301 | nextkid = kid->op_sibling; /* Get before next freeing kid */ |
79072805 | 302 | op_free(kid); |
85e6fe83 | 303 | } |
79072805 | 304 | } |
acb36ea4 GS |
305 | type = o->op_type; |
306 | if (type == OP_NULL) | |
eb160463 | 307 | type = (OPCODE)o->op_targ; |
acb36ea4 GS |
308 | |
309 | /* COP* is not cleared by op_clear() so that we may track line | |
310 | * numbers etc even after null() */ | |
311 | if (type == OP_NEXTSTATE || type == OP_SETSTATE || type == OP_DBSTATE) | |
312 | cop_free((COP*)o); | |
313 | ||
314 | op_clear(o); | |
238a4c30 | 315 | FreeOp(o); |
4d494880 DM |
316 | #ifdef DEBUG_LEAKING_SCALARS |
317 | if (PL_op == o) | |
318 | PL_op = Nullop; | |
319 | #endif | |
acb36ea4 | 320 | } |
79072805 | 321 | |
93c66552 DM |
322 | void |
323 | Perl_op_clear(pTHX_ OP *o) | |
acb36ea4 | 324 | { |
13137afc | 325 | |
27da23d5 | 326 | dVAR; |
11343788 | 327 | switch (o->op_type) { |
acb36ea4 GS |
328 | case OP_NULL: /* Was holding old type, if any. */ |
329 | case OP_ENTEREVAL: /* Was holding hints. */ | |
acb36ea4 | 330 | o->op_targ = 0; |
a0d0e21e | 331 | break; |
a6006777 | 332 | default: |
ac4c12e7 | 333 | if (!(o->op_flags & OPf_REF) |
0b94c7bb | 334 | || (PL_check[o->op_type] != MEMBER_TO_FPTR(Perl_ck_ftst))) |
a6006777 | 335 | break; |
336 | /* FALL THROUGH */ | |
463ee0b2 | 337 | case OP_GVSV: |
79072805 | 338 | case OP_GV: |
a6006777 | 339 | case OP_AELEMFAST: |
6a077020 DM |
340 | if (! (o->op_type == OP_AELEMFAST && o->op_flags & OPf_SPECIAL)) { |
341 | /* not an OP_PADAV replacement */ | |
350de78d | 342 | #ifdef USE_ITHREADS |
6a077020 DM |
343 | if (cPADOPo->op_padix > 0) { |
344 | /* No GvIN_PAD_off(cGVOPo_gv) here, because other references | |
345 | * may still exist on the pad */ | |
346 | pad_swipe(cPADOPo->op_padix, TRUE); | |
347 | cPADOPo->op_padix = 0; | |
348 | } | |
350de78d | 349 | #else |
6a077020 DM |
350 | SvREFCNT_dec(cSVOPo->op_sv); |
351 | cSVOPo->op_sv = Nullsv; | |
350de78d | 352 | #endif |
6a077020 | 353 | } |
79072805 | 354 | break; |
a1ae71d2 | 355 | case OP_METHOD_NAMED: |
79072805 | 356 | case OP_CONST: |
11343788 | 357 | SvREFCNT_dec(cSVOPo->op_sv); |
acb36ea4 | 358 | cSVOPo->op_sv = Nullsv; |
3b1c21fa AB |
359 | #ifdef USE_ITHREADS |
360 | /** Bug #15654 | |
361 | Even if op_clear does a pad_free for the target of the op, | |
6a077020 | 362 | pad_free doesn't actually remove the sv that exists in the pad; |
3b1c21fa AB |
363 | instead it lives on. This results in that it could be reused as |
364 | a target later on when the pad was reallocated. | |
365 | **/ | |
366 | if(o->op_targ) { | |
367 | pad_swipe(o->op_targ,1); | |
368 | o->op_targ = 0; | |
369 | } | |
370 | #endif | |
79072805 | 371 | break; |
748a9306 LW |
372 | case OP_GOTO: |
373 | case OP_NEXT: | |
374 | case OP_LAST: | |
375 | case OP_REDO: | |
11343788 | 376 | if (o->op_flags & (OPf_SPECIAL|OPf_STACKED|OPf_KIDS)) |
748a9306 LW |
377 | break; |
378 | /* FALL THROUGH */ | |
a0d0e21e | 379 | case OP_TRANS: |
acb36ea4 | 380 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { |
a0ed51b3 | 381 | SvREFCNT_dec(cSVOPo->op_sv); |
acb36ea4 GS |
382 | cSVOPo->op_sv = Nullsv; |
383 | } | |
384 | else { | |
a0ed51b3 | 385 | Safefree(cPVOPo->op_pv); |
acb36ea4 GS |
386 | cPVOPo->op_pv = Nullch; |
387 | } | |
a0d0e21e LW |
388 | break; |
389 | case OP_SUBST: | |
11343788 | 390 | op_free(cPMOPo->op_pmreplroot); |
971a9dd3 | 391 | goto clear_pmop; |
748a9306 | 392 | case OP_PUSHRE: |
971a9dd3 | 393 | #ifdef USE_ITHREADS |
ba89bb6e | 394 | if (INT2PTR(PADOFFSET, cPMOPo->op_pmreplroot)) { |
dd2155a4 DM |
395 | /* No GvIN_PAD_off here, because other references may still |
396 | * exist on the pad */ | |
397 | pad_swipe(INT2PTR(PADOFFSET, cPMOPo->op_pmreplroot), TRUE); | |
971a9dd3 GS |
398 | } |
399 | #else | |
400 | SvREFCNT_dec((SV*)cPMOPo->op_pmreplroot); | |
401 | #endif | |
402 | /* FALL THROUGH */ | |
a0d0e21e | 403 | case OP_MATCH: |
8782bef2 | 404 | case OP_QR: |
971a9dd3 | 405 | clear_pmop: |
cb55de95 JH |
406 | { |
407 | HV *pmstash = PmopSTASH(cPMOPo); | |
408 | if (pmstash && SvREFCNT(pmstash)) { | |
8d2f4536 NC |
409 | MAGIC *mg = mg_find((SV*)pmstash, PERL_MAGIC_symtab); |
410 | if (mg) { | |
411 | PMOP *pmop = (PMOP*) mg->mg_obj; | |
412 | PMOP *lastpmop = NULL; | |
413 | while (pmop) { | |
414 | if (cPMOPo == pmop) { | |
415 | if (lastpmop) | |
416 | lastpmop->op_pmnext = pmop->op_pmnext; | |
417 | else | |
418 | mg->mg_obj = (SV*) pmop->op_pmnext; | |
419 | break; | |
420 | } | |
421 | lastpmop = pmop; | |
422 | pmop = pmop->op_pmnext; | |
cb55de95 | 423 | } |
cb55de95 | 424 | } |
83da49e6 | 425 | } |
05ec9bb3 | 426 | PmopSTASH_free(cPMOPo); |
cb55de95 | 427 | } |
971a9dd3 | 428 | cPMOPo->op_pmreplroot = Nullop; |
5f8cb046 DM |
429 | /* we use the "SAFE" version of the PM_ macros here |
430 | * since sv_clean_all might release some PMOPs | |
431 | * after PL_regex_padav has been cleared | |
432 | * and the clearing of PL_regex_padav needs to | |
433 | * happen before sv_clean_all | |
434 | */ | |
435 | ReREFCNT_dec(PM_GETRE_SAFE(cPMOPo)); | |
436 | PM_SETRE_SAFE(cPMOPo, (REGEXP*)NULL); | |
13137afc AB |
437 | #ifdef USE_ITHREADS |
438 | if(PL_regex_pad) { /* We could be in destruction */ | |
439 | av_push((AV*) PL_regex_pad[0],(SV*) PL_regex_pad[(cPMOPo)->op_pmoffset]); | |
1cc8b4c5 | 440 | SvREPADTMP_on(PL_regex_pad[(cPMOPo)->op_pmoffset]); |
13137afc AB |
441 | PM_SETRE(cPMOPo, (cPMOPo)->op_pmoffset); |
442 | } | |
1eb1540c | 443 | #endif |
13137afc | 444 | |
a0d0e21e | 445 | break; |
79072805 LW |
446 | } |
447 | ||
743e66e6 | 448 | if (o->op_targ > 0) { |
11343788 | 449 | pad_free(o->op_targ); |
743e66e6 GS |
450 | o->op_targ = 0; |
451 | } | |
79072805 LW |
452 | } |
453 | ||
76e3520e | 454 | STATIC void |
3eb57f73 HS |
455 | S_cop_free(pTHX_ COP* cop) |
456 | { | |
05ec9bb3 NIS |
457 | Safefree(cop->cop_label); /* FIXME: treaddead ??? */ |
458 | CopFILE_free(cop); | |
459 | CopSTASH_free(cop); | |
0453d815 | 460 | if (! specialWARN(cop->cop_warnings)) |
3eb57f73 | 461 | SvREFCNT_dec(cop->cop_warnings); |
05ec9bb3 NIS |
462 | if (! specialCopIO(cop->cop_io)) { |
463 | #ifdef USE_ITHREADS | |
042f6df8 | 464 | #if 0 |
05ec9bb3 NIS |
465 | STRLEN len; |
466 | char *s = SvPV(cop->cop_io,len); | |
b178108d JH |
467 | Perl_warn(aTHX_ "io='%.*s'",(int) len,s); /* ??? --jhi */ |
468 | #endif | |
05ec9bb3 | 469 | #else |
ac27b0f5 | 470 | SvREFCNT_dec(cop->cop_io); |
05ec9bb3 NIS |
471 | #endif |
472 | } | |
3eb57f73 HS |
473 | } |
474 | ||
93c66552 DM |
475 | void |
476 | Perl_op_null(pTHX_ OP *o) | |
8990e307 | 477 | { |
27da23d5 | 478 | dVAR; |
acb36ea4 GS |
479 | if (o->op_type == OP_NULL) |
480 | return; | |
481 | op_clear(o); | |
11343788 MB |
482 | o->op_targ = o->op_type; |
483 | o->op_type = OP_NULL; | |
22c35a8c | 484 | o->op_ppaddr = PL_ppaddr[OP_NULL]; |
8990e307 LW |
485 | } |
486 | ||
4026c95a SH |
487 | void |
488 | Perl_op_refcnt_lock(pTHX) | |
489 | { | |
27da23d5 | 490 | dVAR; |
4026c95a SH |
491 | OP_REFCNT_LOCK; |
492 | } | |
493 | ||
494 | void | |
495 | Perl_op_refcnt_unlock(pTHX) | |
496 | { | |
27da23d5 | 497 | dVAR; |
4026c95a SH |
498 | OP_REFCNT_UNLOCK; |
499 | } | |
500 | ||
79072805 LW |
501 | /* Contextualizers */ |
502 | ||
463ee0b2 | 503 | #define LINKLIST(o) ((o)->op_next ? (o)->op_next : linklist((OP*)o)) |
79072805 LW |
504 | |
505 | OP * | |
864dbfa3 | 506 | Perl_linklist(pTHX_ OP *o) |
79072805 | 507 | { |
79072805 | 508 | |
11343788 MB |
509 | if (o->op_next) |
510 | return o->op_next; | |
79072805 LW |
511 | |
512 | /* establish postfix order */ | |
11343788 | 513 | if (cUNOPo->op_first) { |
6867be6d | 514 | register OP *kid; |
11343788 MB |
515 | o->op_next = LINKLIST(cUNOPo->op_first); |
516 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) { | |
79072805 LW |
517 | if (kid->op_sibling) |
518 | kid->op_next = LINKLIST(kid->op_sibling); | |
519 | else | |
11343788 | 520 | kid->op_next = o; |
79072805 LW |
521 | } |
522 | } | |
523 | else | |
11343788 | 524 | o->op_next = o; |
79072805 | 525 | |
11343788 | 526 | return o->op_next; |
79072805 LW |
527 | } |
528 | ||
529 | OP * | |
864dbfa3 | 530 | Perl_scalarkids(pTHX_ OP *o) |
79072805 | 531 | { |
11343788 | 532 | if (o && o->op_flags & OPf_KIDS) { |
bfed75c6 | 533 | OP *kid; |
11343788 | 534 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
535 | scalar(kid); |
536 | } | |
11343788 | 537 | return o; |
79072805 LW |
538 | } |
539 | ||
76e3520e | 540 | STATIC OP * |
cea2e8a9 | 541 | S_scalarboolean(pTHX_ OP *o) |
8990e307 | 542 | { |
d008e5eb | 543 | if (o->op_type == OP_SASSIGN && cBINOPo->op_first->op_type == OP_CONST) { |
d008e5eb | 544 | if (ckWARN(WARN_SYNTAX)) { |
6867be6d | 545 | const line_t oldline = CopLINE(PL_curcop); |
a0d0e21e | 546 | |
d008e5eb | 547 | if (PL_copline != NOLINE) |
57843af0 | 548 | CopLINE_set(PL_curcop, PL_copline); |
9014280d | 549 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Found = in conditional, should be =="); |
57843af0 | 550 | CopLINE_set(PL_curcop, oldline); |
d008e5eb | 551 | } |
a0d0e21e | 552 | } |
11343788 | 553 | return scalar(o); |
8990e307 LW |
554 | } |
555 | ||
556 | OP * | |
864dbfa3 | 557 | Perl_scalar(pTHX_ OP *o) |
79072805 | 558 | { |
27da23d5 | 559 | dVAR; |
79072805 LW |
560 | OP *kid; |
561 | ||
a0d0e21e | 562 | /* assumes no premature commitment */ |
3280af22 | 563 | if (!o || (o->op_flags & OPf_WANT) || PL_error_count |
5dc0d613 | 564 | || o->op_type == OP_RETURN) |
7e363e51 | 565 | { |
11343788 | 566 | return o; |
7e363e51 | 567 | } |
79072805 | 568 | |
5dc0d613 | 569 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_SCALAR; |
79072805 | 570 | |
11343788 | 571 | switch (o->op_type) { |
79072805 | 572 | case OP_REPEAT: |
11343788 | 573 | scalar(cBINOPo->op_first); |
8990e307 | 574 | break; |
79072805 LW |
575 | case OP_OR: |
576 | case OP_AND: | |
577 | case OP_COND_EXPR: | |
11343788 | 578 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
8990e307 | 579 | scalar(kid); |
79072805 | 580 | break; |
a0d0e21e | 581 | case OP_SPLIT: |
11343788 | 582 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e | 583 | if (!kPMOP->op_pmreplroot) |
12bcd1a6 | 584 | deprecate_old("implicit split to @_"); |
a0d0e21e LW |
585 | } |
586 | /* FALL THROUGH */ | |
79072805 | 587 | case OP_MATCH: |
8782bef2 | 588 | case OP_QR: |
79072805 LW |
589 | case OP_SUBST: |
590 | case OP_NULL: | |
8990e307 | 591 | default: |
11343788 MB |
592 | if (o->op_flags & OPf_KIDS) { |
593 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) | |
8990e307 LW |
594 | scalar(kid); |
595 | } | |
79072805 LW |
596 | break; |
597 | case OP_LEAVE: | |
598 | case OP_LEAVETRY: | |
5dc0d613 | 599 | kid = cLISTOPo->op_first; |
54310121 | 600 | scalar(kid); |
155aba94 | 601 | while ((kid = kid->op_sibling)) { |
54310121 | 602 | if (kid->op_sibling) |
603 | scalarvoid(kid); | |
604 | else | |
605 | scalar(kid); | |
606 | } | |
3280af22 | 607 | WITH_THR(PL_curcop = &PL_compiling); |
54310121 | 608 | break; |
748a9306 | 609 | case OP_SCOPE: |
79072805 | 610 | case OP_LINESEQ: |
8990e307 | 611 | case OP_LIST: |
11343788 | 612 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
613 | if (kid->op_sibling) |
614 | scalarvoid(kid); | |
615 | else | |
616 | scalar(kid); | |
617 | } | |
3280af22 | 618 | WITH_THR(PL_curcop = &PL_compiling); |
79072805 | 619 | break; |
a801c63c RGS |
620 | case OP_SORT: |
621 | if (ckWARN(WARN_VOID)) | |
9014280d | 622 | Perl_warner(aTHX_ packWARN(WARN_VOID), "Useless use of sort in scalar context"); |
79072805 | 623 | } |
11343788 | 624 | return o; |
79072805 LW |
625 | } |
626 | ||
627 | OP * | |
864dbfa3 | 628 | Perl_scalarvoid(pTHX_ OP *o) |
79072805 | 629 | { |
27da23d5 | 630 | dVAR; |
79072805 | 631 | OP *kid; |
e1ec3a88 | 632 | const char* useless = 0; |
8990e307 | 633 | SV* sv; |
2ebea0a1 GS |
634 | U8 want; |
635 | ||
acb36ea4 GS |
636 | if (o->op_type == OP_NEXTSTATE |
637 | || o->op_type == OP_SETSTATE | |
638 | || o->op_type == OP_DBSTATE | |
639 | || (o->op_type == OP_NULL && (o->op_targ == OP_NEXTSTATE | |
640 | || o->op_targ == OP_SETSTATE | |
641 | || o->op_targ == OP_DBSTATE))) | |
2ebea0a1 | 642 | PL_curcop = (COP*)o; /* for warning below */ |
79072805 | 643 | |
54310121 | 644 | /* assumes no premature commitment */ |
2ebea0a1 GS |
645 | want = o->op_flags & OPf_WANT; |
646 | if ((want && want != OPf_WANT_SCALAR) || PL_error_count | |
5dc0d613 | 647 | || o->op_type == OP_RETURN) |
7e363e51 | 648 | { |
11343788 | 649 | return o; |
7e363e51 | 650 | } |
79072805 | 651 | |
b162f9ea | 652 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
653 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
654 | { | |
b162f9ea | 655 | return scalar(o); /* As if inside SASSIGN */ |
7e363e51 | 656 | } |
1c846c1f | 657 | |
5dc0d613 | 658 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_VOID; |
79072805 | 659 | |
11343788 | 660 | switch (o->op_type) { |
79072805 | 661 | default: |
22c35a8c | 662 | if (!(PL_opargs[o->op_type] & OA_FOLDCONST)) |
8990e307 | 663 | break; |
36477c24 | 664 | /* FALL THROUGH */ |
665 | case OP_REPEAT: | |
11343788 | 666 | if (o->op_flags & OPf_STACKED) |
8990e307 | 667 | break; |
5d82c453 GA |
668 | goto func_ops; |
669 | case OP_SUBSTR: | |
670 | if (o->op_private == 4) | |
671 | break; | |
8990e307 LW |
672 | /* FALL THROUGH */ |
673 | case OP_GVSV: | |
674 | case OP_WANTARRAY: | |
675 | case OP_GV: | |
676 | case OP_PADSV: | |
677 | case OP_PADAV: | |
678 | case OP_PADHV: | |
679 | case OP_PADANY: | |
680 | case OP_AV2ARYLEN: | |
8990e307 | 681 | case OP_REF: |
a0d0e21e LW |
682 | case OP_REFGEN: |
683 | case OP_SREFGEN: | |
8990e307 LW |
684 | case OP_DEFINED: |
685 | case OP_HEX: | |
686 | case OP_OCT: | |
687 | case OP_LENGTH: | |
8990e307 LW |
688 | case OP_VEC: |
689 | case OP_INDEX: | |
690 | case OP_RINDEX: | |
691 | case OP_SPRINTF: | |
692 | case OP_AELEM: | |
693 | case OP_AELEMFAST: | |
694 | case OP_ASLICE: | |
8990e307 LW |
695 | case OP_HELEM: |
696 | case OP_HSLICE: | |
697 | case OP_UNPACK: | |
698 | case OP_PACK: | |
8990e307 LW |
699 | case OP_JOIN: |
700 | case OP_LSLICE: | |
701 | case OP_ANONLIST: | |
702 | case OP_ANONHASH: | |
703 | case OP_SORT: | |
704 | case OP_REVERSE: | |
705 | case OP_RANGE: | |
706 | case OP_FLIP: | |
707 | case OP_FLOP: | |
708 | case OP_CALLER: | |
709 | case OP_FILENO: | |
710 | case OP_EOF: | |
711 | case OP_TELL: | |
712 | case OP_GETSOCKNAME: | |
713 | case OP_GETPEERNAME: | |
714 | case OP_READLINK: | |
715 | case OP_TELLDIR: | |
716 | case OP_GETPPID: | |
717 | case OP_GETPGRP: | |
718 | case OP_GETPRIORITY: | |
719 | case OP_TIME: | |
720 | case OP_TMS: | |
721 | case OP_LOCALTIME: | |
722 | case OP_GMTIME: | |
723 | case OP_GHBYNAME: | |
724 | case OP_GHBYADDR: | |
725 | case OP_GHOSTENT: | |
726 | case OP_GNBYNAME: | |
727 | case OP_GNBYADDR: | |
728 | case OP_GNETENT: | |
729 | case OP_GPBYNAME: | |
730 | case OP_GPBYNUMBER: | |
731 | case OP_GPROTOENT: | |
732 | case OP_GSBYNAME: | |
733 | case OP_GSBYPORT: | |
734 | case OP_GSERVENT: | |
735 | case OP_GPWNAM: | |
736 | case OP_GPWUID: | |
737 | case OP_GGRNAM: | |
738 | case OP_GGRGID: | |
739 | case OP_GETLOGIN: | |
78e1b766 | 740 | case OP_PROTOTYPE: |
5d82c453 | 741 | func_ops: |
64aac5a9 | 742 | if (!(o->op_private & (OPpLVAL_INTRO|OPpOUR_INTRO))) |
53e06cf0 | 743 | useless = OP_DESC(o); |
8990e307 LW |
744 | break; |
745 | ||
9f82cd5f YST |
746 | case OP_NOT: |
747 | kid = cUNOPo->op_first; | |
748 | if (kid->op_type != OP_MATCH && kid->op_type != OP_SUBST && | |
749 | kid->op_type != OP_TRANS) { | |
750 | goto func_ops; | |
751 | } | |
752 | useless = "negative pattern binding (!~)"; | |
753 | break; | |
754 | ||
8990e307 LW |
755 | case OP_RV2GV: |
756 | case OP_RV2SV: | |
757 | case OP_RV2AV: | |
758 | case OP_RV2HV: | |
192587c2 | 759 | if (!(o->op_private & (OPpLVAL_INTRO|OPpOUR_INTRO)) && |
11343788 | 760 | (!o->op_sibling || o->op_sibling->op_type != OP_READLINE)) |
8990e307 LW |
761 | useless = "a variable"; |
762 | break; | |
79072805 LW |
763 | |
764 | case OP_CONST: | |
7766f137 | 765 | sv = cSVOPo_sv; |
7a52d87a GS |
766 | if (cSVOPo->op_private & OPpCONST_STRICT) |
767 | no_bareword_allowed(o); | |
768 | else { | |
d008e5eb GS |
769 | if (ckWARN(WARN_VOID)) { |
770 | useless = "a constant"; | |
e7fec78e | 771 | /* don't warn on optimised away booleans, eg |
b5a930ec | 772 | * use constant Foo, 5; Foo || print; */ |
e7fec78e DM |
773 | if (cSVOPo->op_private & OPpCONST_SHORTCIRCUIT) |
774 | useless = 0; | |
960b4253 MG |
775 | /* the constants 0 and 1 are permitted as they are |
776 | conventionally used as dummies in constructs like | |
777 | 1 while some_condition_with_side_effects; */ | |
e7fec78e | 778 | else if (SvNIOK(sv) && (SvNV(sv) == 0.0 || SvNV(sv) == 1.0)) |
d008e5eb GS |
779 | useless = 0; |
780 | else if (SvPOK(sv)) { | |
a52fe3ac A |
781 | /* perl4's way of mixing documentation and code |
782 | (before the invention of POD) was based on a | |
783 | trick to mix nroff and perl code. The trick was | |
784 | built upon these three nroff macros being used in | |
785 | void context. The pink camel has the details in | |
786 | the script wrapman near page 319. */ | |
b15aece3 SP |
787 | if (strnEQ(SvPVX_const(sv), "di", 2) || |
788 | strnEQ(SvPVX_const(sv), "ds", 2) || | |
789 | strnEQ(SvPVX_const(sv), "ig", 2)) | |
d008e5eb GS |
790 | useless = 0; |
791 | } | |
8990e307 LW |
792 | } |
793 | } | |
93c66552 | 794 | op_null(o); /* don't execute or even remember it */ |
79072805 LW |
795 | break; |
796 | ||
797 | case OP_POSTINC: | |
11343788 | 798 | o->op_type = OP_PREINC; /* pre-increment is faster */ |
22c35a8c | 799 | o->op_ppaddr = PL_ppaddr[OP_PREINC]; |
79072805 LW |
800 | break; |
801 | ||
802 | case OP_POSTDEC: | |
11343788 | 803 | o->op_type = OP_PREDEC; /* pre-decrement is faster */ |
22c35a8c | 804 | o->op_ppaddr = PL_ppaddr[OP_PREDEC]; |
79072805 LW |
805 | break; |
806 | ||
79072805 LW |
807 | case OP_OR: |
808 | case OP_AND: | |
c963b151 | 809 | case OP_DOR: |
79072805 | 810 | case OP_COND_EXPR: |
11343788 | 811 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
812 | scalarvoid(kid); |
813 | break; | |
5aabfad6 | 814 | |
a0d0e21e | 815 | case OP_NULL: |
11343788 | 816 | if (o->op_flags & OPf_STACKED) |
a0d0e21e | 817 | break; |
5aabfad6 | 818 | /* FALL THROUGH */ |
2ebea0a1 GS |
819 | case OP_NEXTSTATE: |
820 | case OP_DBSTATE: | |
79072805 LW |
821 | case OP_ENTERTRY: |
822 | case OP_ENTER: | |
11343788 | 823 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 824 | break; |
54310121 | 825 | /* FALL THROUGH */ |
463ee0b2 | 826 | case OP_SCOPE: |
79072805 LW |
827 | case OP_LEAVE: |
828 | case OP_LEAVETRY: | |
a0d0e21e | 829 | case OP_LEAVELOOP: |
79072805 | 830 | case OP_LINESEQ: |
79072805 | 831 | case OP_LIST: |
11343788 | 832 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
833 | scalarvoid(kid); |
834 | break; | |
c90c0ff4 | 835 | case OP_ENTEREVAL: |
5196be3e | 836 | scalarkids(o); |
c90c0ff4 | 837 | break; |
5aabfad6 | 838 | case OP_REQUIRE: |
c90c0ff4 | 839 | /* all requires must return a boolean value */ |
5196be3e | 840 | o->op_flags &= ~OPf_WANT; |
d6483035 GS |
841 | /* FALL THROUGH */ |
842 | case OP_SCALAR: | |
5196be3e | 843 | return scalar(o); |
a0d0e21e | 844 | case OP_SPLIT: |
11343788 | 845 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e | 846 | if (!kPMOP->op_pmreplroot) |
12bcd1a6 | 847 | deprecate_old("implicit split to @_"); |
a0d0e21e LW |
848 | } |
849 | break; | |
79072805 | 850 | } |
411caa50 | 851 | if (useless && ckWARN(WARN_VOID)) |
9014280d | 852 | Perl_warner(aTHX_ packWARN(WARN_VOID), "Useless use of %s in void context", useless); |
11343788 | 853 | return o; |
79072805 LW |
854 | } |
855 | ||
856 | OP * | |
864dbfa3 | 857 | Perl_listkids(pTHX_ OP *o) |
79072805 | 858 | { |
11343788 | 859 | if (o && o->op_flags & OPf_KIDS) { |
6867be6d | 860 | OP *kid; |
11343788 | 861 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
862 | list(kid); |
863 | } | |
11343788 | 864 | return o; |
79072805 LW |
865 | } |
866 | ||
867 | OP * | |
864dbfa3 | 868 | Perl_list(pTHX_ OP *o) |
79072805 | 869 | { |
27da23d5 | 870 | dVAR; |
79072805 LW |
871 | OP *kid; |
872 | ||
a0d0e21e | 873 | /* assumes no premature commitment */ |
3280af22 | 874 | if (!o || (o->op_flags & OPf_WANT) || PL_error_count |
5dc0d613 | 875 | || o->op_type == OP_RETURN) |
7e363e51 | 876 | { |
11343788 | 877 | return o; |
7e363e51 | 878 | } |
79072805 | 879 | |
b162f9ea | 880 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
881 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
882 | { | |
b162f9ea | 883 | return o; /* As if inside SASSIGN */ |
7e363e51 | 884 | } |
1c846c1f | 885 | |
5dc0d613 | 886 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_LIST; |
79072805 | 887 | |
11343788 | 888 | switch (o->op_type) { |
79072805 LW |
889 | case OP_FLOP: |
890 | case OP_REPEAT: | |
11343788 | 891 | list(cBINOPo->op_first); |
79072805 LW |
892 | break; |
893 | case OP_OR: | |
894 | case OP_AND: | |
895 | case OP_COND_EXPR: | |
11343788 | 896 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
897 | list(kid); |
898 | break; | |
899 | default: | |
900 | case OP_MATCH: | |
8782bef2 | 901 | case OP_QR: |
79072805 LW |
902 | case OP_SUBST: |
903 | case OP_NULL: | |
11343788 | 904 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 905 | break; |
11343788 MB |
906 | if (!o->op_next && cUNOPo->op_first->op_type == OP_FLOP) { |
907 | list(cBINOPo->op_first); | |
908 | return gen_constant_list(o); | |
79072805 LW |
909 | } |
910 | case OP_LIST: | |
11343788 | 911 | listkids(o); |
79072805 LW |
912 | break; |
913 | case OP_LEAVE: | |
914 | case OP_LEAVETRY: | |
5dc0d613 | 915 | kid = cLISTOPo->op_first; |
54310121 | 916 | list(kid); |
155aba94 | 917 | while ((kid = kid->op_sibling)) { |
54310121 | 918 | if (kid->op_sibling) |
919 | scalarvoid(kid); | |
920 | else | |
921 | list(kid); | |
922 | } | |
3280af22 | 923 | WITH_THR(PL_curcop = &PL_compiling); |
54310121 | 924 | break; |
748a9306 | 925 | case OP_SCOPE: |
79072805 | 926 | case OP_LINESEQ: |
11343788 | 927 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
928 | if (kid->op_sibling) |
929 | scalarvoid(kid); | |
930 | else | |
931 | list(kid); | |
932 | } | |
3280af22 | 933 | WITH_THR(PL_curcop = &PL_compiling); |
79072805 | 934 | break; |
c90c0ff4 | 935 | case OP_REQUIRE: |
936 | /* all requires must return a boolean value */ | |
5196be3e MB |
937 | o->op_flags &= ~OPf_WANT; |
938 | return scalar(o); | |
79072805 | 939 | } |
11343788 | 940 | return o; |
79072805 LW |
941 | } |
942 | ||
943 | OP * | |
864dbfa3 | 944 | Perl_scalarseq(pTHX_ OP *o) |
79072805 | 945 | { |
11343788 MB |
946 | if (o) { |
947 | if (o->op_type == OP_LINESEQ || | |
948 | o->op_type == OP_SCOPE || | |
949 | o->op_type == OP_LEAVE || | |
950 | o->op_type == OP_LEAVETRY) | |
463ee0b2 | 951 | { |
6867be6d | 952 | OP *kid; |
11343788 | 953 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
ed6116ce | 954 | if (kid->op_sibling) { |
463ee0b2 | 955 | scalarvoid(kid); |
ed6116ce | 956 | } |
463ee0b2 | 957 | } |
3280af22 | 958 | PL_curcop = &PL_compiling; |
79072805 | 959 | } |
11343788 | 960 | o->op_flags &= ~OPf_PARENS; |
3280af22 | 961 | if (PL_hints & HINT_BLOCK_SCOPE) |
11343788 | 962 | o->op_flags |= OPf_PARENS; |
79072805 | 963 | } |
8990e307 | 964 | else |
11343788 MB |
965 | o = newOP(OP_STUB, 0); |
966 | return o; | |
79072805 LW |
967 | } |
968 | ||
76e3520e | 969 | STATIC OP * |
cea2e8a9 | 970 | S_modkids(pTHX_ OP *o, I32 type) |
79072805 | 971 | { |
11343788 | 972 | if (o && o->op_flags & OPf_KIDS) { |
6867be6d | 973 | OP *kid; |
11343788 | 974 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 | 975 | mod(kid, type); |
79072805 | 976 | } |
11343788 | 977 | return o; |
79072805 LW |
978 | } |
979 | ||
ddeae0f1 DM |
980 | /* Propagate lvalue ("modifiable") context to an op and it's children. |
981 | * 'type' represents the context type, roughly based on the type of op that | |
982 | * would do the modifying, although local() is represented by OP_NULL. | |
983 | * It's responsible for detecting things that can't be modified, flag | |
984 | * things that need to behave specially in an lvalue context (e.g., "$$x = 5" | |
985 | * might have to vivify a reference in $x), and so on. | |
986 | * | |
987 | * For example, "$a+1 = 2" would cause mod() to be called with o being | |
988 | * OP_ADD and type being OP_SASSIGN, and would output an error. | |
989 | */ | |
990 | ||
79072805 | 991 | OP * |
864dbfa3 | 992 | Perl_mod(pTHX_ OP *o, I32 type) |
79072805 | 993 | { |
27da23d5 | 994 | dVAR; |
79072805 | 995 | OP *kid; |
ddeae0f1 DM |
996 | /* -1 = error on localize, 0 = ignore localize, 1 = ok to localize */ |
997 | int localize = -1; | |
79072805 | 998 | |
3280af22 | 999 | if (!o || PL_error_count) |
11343788 | 1000 | return o; |
79072805 | 1001 | |
b162f9ea | 1002 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
1003 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
1004 | { | |
b162f9ea | 1005 | return o; |
7e363e51 | 1006 | } |
1c846c1f | 1007 | |
11343788 | 1008 | switch (o->op_type) { |
68dc0745 | 1009 | case OP_UNDEF: |
ddeae0f1 | 1010 | localize = 0; |
3280af22 | 1011 | PL_modcount++; |
5dc0d613 | 1012 | return o; |
a0d0e21e | 1013 | case OP_CONST: |
11343788 | 1014 | if (!(o->op_private & (OPpCONST_ARYBASE))) |
a0d0e21e | 1015 | goto nomod; |
3280af22 | 1016 | if (PL_eval_start && PL_eval_start->op_type == OP_CONST) { |
7766f137 | 1017 | PL_compiling.cop_arybase = (I32)SvIV(cSVOPx(PL_eval_start)->op_sv); |
3280af22 | 1018 | PL_eval_start = 0; |
a0d0e21e LW |
1019 | } |
1020 | else if (!type) { | |
3280af22 NIS |
1021 | SAVEI32(PL_compiling.cop_arybase); |
1022 | PL_compiling.cop_arybase = 0; | |
a0d0e21e LW |
1023 | } |
1024 | else if (type == OP_REFGEN) | |
1025 | goto nomod; | |
1026 | else | |
cea2e8a9 | 1027 | Perl_croak(aTHX_ "That use of $[ is unsupported"); |
a0d0e21e | 1028 | break; |
5f05dabc | 1029 | case OP_STUB: |
5196be3e | 1030 | if (o->op_flags & OPf_PARENS) |
5f05dabc | 1031 | break; |
1032 | goto nomod; | |
a0d0e21e LW |
1033 | case OP_ENTERSUB: |
1034 | if ((type == OP_UNDEF || type == OP_REFGEN) && | |
11343788 MB |
1035 | !(o->op_flags & OPf_STACKED)) { |
1036 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
22c35a8c | 1037 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 | 1038 | assert(cUNOPo->op_first->op_type == OP_NULL); |
93c66552 | 1039 | op_null(((LISTOP*)cUNOPo->op_first)->op_first);/* disable pushmark */ |
79072805 LW |
1040 | break; |
1041 | } | |
95f0a2f1 SB |
1042 | else if (o->op_private & OPpENTERSUB_NOMOD) |
1043 | return o; | |
cd06dffe GS |
1044 | else { /* lvalue subroutine call */ |
1045 | o->op_private |= OPpLVAL_INTRO; | |
e6438c1a | 1046 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
4978d6d9 | 1047 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) { |
cd06dffe GS |
1048 | /* Backward compatibility mode: */ |
1049 | o->op_private |= OPpENTERSUB_INARGS; | |
1050 | break; | |
1051 | } | |
1052 | else { /* Compile-time error message: */ | |
1053 | OP *kid = cUNOPo->op_first; | |
1054 | CV *cv; | |
1055 | OP *okid; | |
1056 | ||
1057 | if (kid->op_type == OP_PUSHMARK) | |
1058 | goto skip_kids; | |
1059 | if (kid->op_type != OP_NULL || kid->op_targ != OP_LIST) | |
1060 | Perl_croak(aTHX_ | |
1061 | "panic: unexpected lvalue entersub " | |
55140b79 | 1062 | "args: type/targ %ld:%"UVuf, |
3d811634 | 1063 | (long)kid->op_type, (UV)kid->op_targ); |
cd06dffe GS |
1064 | kid = kLISTOP->op_first; |
1065 | skip_kids: | |
1066 | while (kid->op_sibling) | |
1067 | kid = kid->op_sibling; | |
1068 | if (!(kid->op_type == OP_NULL && kid->op_targ == OP_RV2CV)) { | |
1069 | /* Indirect call */ | |
1070 | if (kid->op_type == OP_METHOD_NAMED | |
1071 | || kid->op_type == OP_METHOD) | |
1072 | { | |
87d7fd28 | 1073 | UNOP *newop; |
b2ffa427 | 1074 | |
87d7fd28 | 1075 | NewOp(1101, newop, 1, UNOP); |
349fd7b7 GS |
1076 | newop->op_type = OP_RV2CV; |
1077 | newop->op_ppaddr = PL_ppaddr[OP_RV2CV]; | |
87d7fd28 GS |
1078 | newop->op_first = Nullop; |
1079 | newop->op_next = (OP*)newop; | |
1080 | kid->op_sibling = (OP*)newop; | |
349fd7b7 | 1081 | newop->op_private |= OPpLVAL_INTRO; |
cd06dffe GS |
1082 | break; |
1083 | } | |
b2ffa427 | 1084 | |
cd06dffe GS |
1085 | if (kid->op_type != OP_RV2CV) |
1086 | Perl_croak(aTHX_ | |
1087 | "panic: unexpected lvalue entersub " | |
55140b79 | 1088 | "entry via type/targ %ld:%"UVuf, |
3d811634 | 1089 | (long)kid->op_type, (UV)kid->op_targ); |
cd06dffe GS |
1090 | kid->op_private |= OPpLVAL_INTRO; |
1091 | break; /* Postpone until runtime */ | |
1092 | } | |
b2ffa427 NIS |
1093 | |
1094 | okid = kid; | |
cd06dffe GS |
1095 | kid = kUNOP->op_first; |
1096 | if (kid->op_type == OP_NULL && kid->op_targ == OP_RV2SV) | |
1097 | kid = kUNOP->op_first; | |
b2ffa427 | 1098 | if (kid->op_type == OP_NULL) |
cd06dffe GS |
1099 | Perl_croak(aTHX_ |
1100 | "Unexpected constant lvalue entersub " | |
55140b79 | 1101 | "entry via type/targ %ld:%"UVuf, |
3d811634 | 1102 | (long)kid->op_type, (UV)kid->op_targ); |
cd06dffe GS |
1103 | if (kid->op_type != OP_GV) { |
1104 | /* Restore RV2CV to check lvalueness */ | |
1105 | restore_2cv: | |
1106 | if (kid->op_next && kid->op_next != kid) { /* Happens? */ | |
1107 | okid->op_next = kid->op_next; | |
1108 | kid->op_next = okid; | |
1109 | } | |
1110 | else | |
1111 | okid->op_next = Nullop; | |
1112 | okid->op_type = OP_RV2CV; | |
1113 | okid->op_targ = 0; | |
1114 | okid->op_ppaddr = PL_ppaddr[OP_RV2CV]; | |
1115 | okid->op_private |= OPpLVAL_INTRO; | |
1116 | break; | |
1117 | } | |
b2ffa427 | 1118 | |
638eceb6 | 1119 | cv = GvCV(kGVOP_gv); |
1c846c1f | 1120 | if (!cv) |
cd06dffe GS |
1121 | goto restore_2cv; |
1122 | if (CvLVALUE(cv)) | |
1123 | break; | |
1124 | } | |
1125 | } | |
79072805 LW |
1126 | /* FALL THROUGH */ |
1127 | default: | |
a0d0e21e LW |
1128 | nomod: |
1129 | /* grep, foreach, subcalls, refgen */ | |
1130 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) | |
1131 | break; | |
cea2e8a9 | 1132 | yyerror(Perl_form(aTHX_ "Can't modify %s in %s", |
638bc118 | 1133 | (o->op_type == OP_NULL && (o->op_flags & OPf_SPECIAL) |
cd06dffe GS |
1134 | ? "do block" |
1135 | : (o->op_type == OP_ENTERSUB | |
1136 | ? "non-lvalue subroutine call" | |
53e06cf0 | 1137 | : OP_DESC(o))), |
22c35a8c | 1138 | type ? PL_op_desc[type] : "local")); |
11343788 | 1139 | return o; |
79072805 | 1140 | |
a0d0e21e LW |
1141 | case OP_PREINC: |
1142 | case OP_PREDEC: | |
1143 | case OP_POW: | |
1144 | case OP_MULTIPLY: | |
1145 | case OP_DIVIDE: | |
1146 | case OP_MODULO: | |
1147 | case OP_REPEAT: | |
1148 | case OP_ADD: | |
1149 | case OP_SUBTRACT: | |
1150 | case OP_CONCAT: | |
1151 | case OP_LEFT_SHIFT: | |
1152 | case OP_RIGHT_SHIFT: | |
1153 | case OP_BIT_AND: | |
1154 | case OP_BIT_XOR: | |
1155 | case OP_BIT_OR: | |
1156 | case OP_I_MULTIPLY: | |
1157 | case OP_I_DIVIDE: | |
1158 | case OP_I_MODULO: | |
1159 | case OP_I_ADD: | |
1160 | case OP_I_SUBTRACT: | |
11343788 | 1161 | if (!(o->op_flags & OPf_STACKED)) |
a0d0e21e | 1162 | goto nomod; |
3280af22 | 1163 | PL_modcount++; |
a0d0e21e | 1164 | break; |
b2ffa427 | 1165 | |
79072805 | 1166 | case OP_COND_EXPR: |
ddeae0f1 | 1167 | localize = 1; |
11343788 | 1168 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 | 1169 | mod(kid, type); |
79072805 LW |
1170 | break; |
1171 | ||
1172 | case OP_RV2AV: | |
1173 | case OP_RV2HV: | |
11343788 | 1174 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) { |
e6438c1a | 1175 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
11343788 | 1176 | return o; /* Treat \(@foo) like ordinary list. */ |
748a9306 LW |
1177 | } |
1178 | /* FALL THROUGH */ | |
79072805 | 1179 | case OP_RV2GV: |
5dc0d613 | 1180 | if (scalar_mod_type(o, type)) |
3fe9a6f1 | 1181 | goto nomod; |
11343788 | 1182 | ref(cUNOPo->op_first, o->op_type); |
79072805 | 1183 | /* FALL THROUGH */ |
79072805 LW |
1184 | case OP_ASLICE: |
1185 | case OP_HSLICE: | |
78f9721b SM |
1186 | if (type == OP_LEAVESUBLV) |
1187 | o->op_private |= OPpMAYBE_LVSUB; | |
ddeae0f1 | 1188 | localize = 1; |
78f9721b SM |
1189 | /* FALL THROUGH */ |
1190 | case OP_AASSIGN: | |
93a17b20 LW |
1191 | case OP_NEXTSTATE: |
1192 | case OP_DBSTATE: | |
e6438c1a | 1193 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
79072805 | 1194 | break; |
463ee0b2 | 1195 | case OP_RV2SV: |
aeea060c | 1196 | ref(cUNOPo->op_first, o->op_type); |
ddeae0f1 | 1197 | localize = 1; |
463ee0b2 | 1198 | /* FALL THROUGH */ |
79072805 | 1199 | case OP_GV: |
463ee0b2 | 1200 | case OP_AV2ARYLEN: |
3280af22 | 1201 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 1202 | case OP_SASSIGN: |
bf4b1e52 GS |
1203 | case OP_ANDASSIGN: |
1204 | case OP_ORASSIGN: | |
c963b151 | 1205 | case OP_DORASSIGN: |
ddeae0f1 DM |
1206 | PL_modcount++; |
1207 | break; | |
1208 | ||
8990e307 | 1209 | case OP_AELEMFAST: |
6a077020 | 1210 | localize = -1; |
3280af22 | 1211 | PL_modcount++; |
8990e307 LW |
1212 | break; |
1213 | ||
748a9306 LW |
1214 | case OP_PADAV: |
1215 | case OP_PADHV: | |
e6438c1a | 1216 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
5196be3e MB |
1217 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) |
1218 | return o; /* Treat \(@foo) like ordinary list. */ | |
1219 | if (scalar_mod_type(o, type)) | |
3fe9a6f1 | 1220 | goto nomod; |
78f9721b SM |
1221 | if (type == OP_LEAVESUBLV) |
1222 | o->op_private |= OPpMAYBE_LVSUB; | |
748a9306 LW |
1223 | /* FALL THROUGH */ |
1224 | case OP_PADSV: | |
3280af22 | 1225 | PL_modcount++; |
ddeae0f1 | 1226 | if (!type) /* local() */ |
cea2e8a9 | 1227 | Perl_croak(aTHX_ "Can't localize lexical variable %s", |
dd2155a4 | 1228 | PAD_COMPNAME_PV(o->op_targ)); |
463ee0b2 LW |
1229 | break; |
1230 | ||
748a9306 | 1231 | case OP_PUSHMARK: |
ddeae0f1 | 1232 | localize = 0; |
748a9306 | 1233 | break; |
b2ffa427 | 1234 | |
69969c6f SB |
1235 | case OP_KEYS: |
1236 | if (type != OP_SASSIGN) | |
1237 | goto nomod; | |
5d82c453 GA |
1238 | goto lvalue_func; |
1239 | case OP_SUBSTR: | |
1240 | if (o->op_private == 4) /* don't allow 4 arg substr as lvalue */ | |
1241 | goto nomod; | |
5f05dabc | 1242 | /* FALL THROUGH */ |
a0d0e21e | 1243 | case OP_POS: |
463ee0b2 | 1244 | case OP_VEC: |
78f9721b SM |
1245 | if (type == OP_LEAVESUBLV) |
1246 | o->op_private |= OPpMAYBE_LVSUB; | |
5d82c453 | 1247 | lvalue_func: |
11343788 MB |
1248 | pad_free(o->op_targ); |
1249 | o->op_targ = pad_alloc(o->op_type, SVs_PADMY); | |
5dc0d613 | 1250 | assert(SvTYPE(PAD_SV(o->op_targ)) == SVt_NULL); |
11343788 MB |
1251 | if (o->op_flags & OPf_KIDS) |
1252 | mod(cBINOPo->op_first->op_sibling, type); | |
463ee0b2 | 1253 | break; |
a0d0e21e | 1254 | |
463ee0b2 LW |
1255 | case OP_AELEM: |
1256 | case OP_HELEM: | |
11343788 | 1257 | ref(cBINOPo->op_first, o->op_type); |
68dc0745 | 1258 | if (type == OP_ENTERSUB && |
5dc0d613 MB |
1259 | !(o->op_private & (OPpLVAL_INTRO | OPpDEREF))) |
1260 | o->op_private |= OPpLVAL_DEFER; | |
78f9721b SM |
1261 | if (type == OP_LEAVESUBLV) |
1262 | o->op_private |= OPpMAYBE_LVSUB; | |
ddeae0f1 | 1263 | localize = 1; |
3280af22 | 1264 | PL_modcount++; |
463ee0b2 LW |
1265 | break; |
1266 | ||
1267 | case OP_SCOPE: | |
1268 | case OP_LEAVE: | |
1269 | case OP_ENTER: | |
78f9721b | 1270 | case OP_LINESEQ: |
ddeae0f1 | 1271 | localize = 0; |
11343788 MB |
1272 | if (o->op_flags & OPf_KIDS) |
1273 | mod(cLISTOPo->op_last, type); | |
a0d0e21e LW |
1274 | break; |
1275 | ||
1276 | case OP_NULL: | |
ddeae0f1 | 1277 | localize = 0; |
638bc118 GS |
1278 | if (o->op_flags & OPf_SPECIAL) /* do BLOCK */ |
1279 | goto nomod; | |
1280 | else if (!(o->op_flags & OPf_KIDS)) | |
463ee0b2 | 1281 | break; |
11343788 MB |
1282 | if (o->op_targ != OP_LIST) { |
1283 | mod(cBINOPo->op_first, type); | |
a0d0e21e LW |
1284 | break; |
1285 | } | |
1286 | /* FALL THROUGH */ | |
463ee0b2 | 1287 | case OP_LIST: |
ddeae0f1 | 1288 | localize = 0; |
11343788 | 1289 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1290 | mod(kid, type); |
1291 | break; | |
78f9721b SM |
1292 | |
1293 | case OP_RETURN: | |
1294 | if (type != OP_LEAVESUBLV) | |
1295 | goto nomod; | |
1296 | break; /* mod()ing was handled by ck_return() */ | |
463ee0b2 | 1297 | } |
58d95175 | 1298 | |
8be1be90 AMS |
1299 | /* [20011101.069] File test operators interpret OPf_REF to mean that |
1300 | their argument is a filehandle; thus \stat(".") should not set | |
1301 | it. AMS 20011102 */ | |
1302 | if (type == OP_REFGEN && | |
1303 | PL_check[o->op_type] == MEMBER_TO_FPTR(Perl_ck_ftst)) | |
1304 | return o; | |
1305 | ||
1306 | if (type != OP_LEAVESUBLV) | |
1307 | o->op_flags |= OPf_MOD; | |
1308 | ||
1309 | if (type == OP_AASSIGN || type == OP_SASSIGN) | |
1310 | o->op_flags |= OPf_SPECIAL|OPf_REF; | |
ddeae0f1 DM |
1311 | else if (!type) { /* local() */ |
1312 | switch (localize) { | |
1313 | case 1: | |
1314 | o->op_private |= OPpLVAL_INTRO; | |
1315 | o->op_flags &= ~OPf_SPECIAL; | |
1316 | PL_hints |= HINT_BLOCK_SCOPE; | |
1317 | break; | |
1318 | case 0: | |
1319 | break; | |
1320 | case -1: | |
1321 | if (ckWARN(WARN_SYNTAX)) { | |
1322 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), | |
1323 | "Useless localization of %s", OP_DESC(o)); | |
1324 | } | |
1325 | } | |
463ee0b2 | 1326 | } |
8be1be90 AMS |
1327 | else if (type != OP_GREPSTART && type != OP_ENTERSUB |
1328 | && type != OP_LEAVESUBLV) | |
1329 | o->op_flags |= OPf_REF; | |
11343788 | 1330 | return o; |
463ee0b2 LW |
1331 | } |
1332 | ||
864dbfa3 | 1333 | STATIC bool |
6867be6d | 1334 | S_scalar_mod_type(pTHX_ const OP *o, I32 type) |
3fe9a6f1 | 1335 | { |
1336 | switch (type) { | |
1337 | case OP_SASSIGN: | |
5196be3e | 1338 | if (o->op_type == OP_RV2GV) |
3fe9a6f1 | 1339 | return FALSE; |
1340 | /* FALL THROUGH */ | |
1341 | case OP_PREINC: | |
1342 | case OP_PREDEC: | |
1343 | case OP_POSTINC: | |
1344 | case OP_POSTDEC: | |
1345 | case OP_I_PREINC: | |
1346 | case OP_I_PREDEC: | |
1347 | case OP_I_POSTINC: | |
1348 | case OP_I_POSTDEC: | |
1349 | case OP_POW: | |
1350 | case OP_MULTIPLY: | |
1351 | case OP_DIVIDE: | |
1352 | case OP_MODULO: | |
1353 | case OP_REPEAT: | |
1354 | case OP_ADD: | |
1355 | case OP_SUBTRACT: | |
1356 | case OP_I_MULTIPLY: | |
1357 | case OP_I_DIVIDE: | |
1358 | case OP_I_MODULO: | |
1359 | case OP_I_ADD: | |
1360 | case OP_I_SUBTRACT: | |
1361 | case OP_LEFT_SHIFT: | |
1362 | case OP_RIGHT_SHIFT: | |
1363 | case OP_BIT_AND: | |
1364 | case OP_BIT_XOR: | |
1365 | case OP_BIT_OR: | |
1366 | case OP_CONCAT: | |
1367 | case OP_SUBST: | |
1368 | case OP_TRANS: | |
49e9fbe6 GS |
1369 | case OP_READ: |
1370 | case OP_SYSREAD: | |
1371 | case OP_RECV: | |
bf4b1e52 GS |
1372 | case OP_ANDASSIGN: |
1373 | case OP_ORASSIGN: | |
3fe9a6f1 | 1374 | return TRUE; |
1375 | default: | |
1376 | return FALSE; | |
1377 | } | |
1378 | } | |
1379 | ||
35cd451c | 1380 | STATIC bool |
504618e9 | 1381 | S_is_handle_constructor(pTHX_ const OP *o, I32 numargs) |
35cd451c GS |
1382 | { |
1383 | switch (o->op_type) { | |
1384 | case OP_PIPE_OP: | |
1385 | case OP_SOCKPAIR: | |
504618e9 | 1386 | if (numargs == 2) |
35cd451c GS |
1387 | return TRUE; |
1388 | /* FALL THROUGH */ | |
1389 | case OP_SYSOPEN: | |
1390 | case OP_OPEN: | |
ded8aa31 | 1391 | case OP_SELECT: /* XXX c.f. SelectSaver.pm */ |
35cd451c GS |
1392 | case OP_SOCKET: |
1393 | case OP_OPEN_DIR: | |
1394 | case OP_ACCEPT: | |
504618e9 | 1395 | if (numargs == 1) |
35cd451c GS |
1396 | return TRUE; |
1397 | /* FALL THROUGH */ | |
1398 | default: | |
1399 | return FALSE; | |
1400 | } | |
1401 | } | |
1402 | ||
463ee0b2 | 1403 | OP * |
864dbfa3 | 1404 | Perl_refkids(pTHX_ OP *o, I32 type) |
463ee0b2 | 1405 | { |
11343788 | 1406 | if (o && o->op_flags & OPf_KIDS) { |
6867be6d | 1407 | OP *kid; |
11343788 | 1408 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1409 | ref(kid, type); |
1410 | } | |
11343788 | 1411 | return o; |
463ee0b2 LW |
1412 | } |
1413 | ||
1414 | OP * | |
864dbfa3 | 1415 | Perl_ref(pTHX_ OP *o, I32 type) |
463ee0b2 | 1416 | { |
27da23d5 | 1417 | dVAR; |
463ee0b2 | 1418 | OP *kid; |
463ee0b2 | 1419 | |
3280af22 | 1420 | if (!o || PL_error_count) |
11343788 | 1421 | return o; |
463ee0b2 | 1422 | |
11343788 | 1423 | switch (o->op_type) { |
a0d0e21e | 1424 | case OP_ENTERSUB: |
afebc493 | 1425 | if ((type == OP_EXISTS || type == OP_DEFINED || type == OP_LOCK) && |
11343788 MB |
1426 | !(o->op_flags & OPf_STACKED)) { |
1427 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
22c35a8c | 1428 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 | 1429 | assert(cUNOPo->op_first->op_type == OP_NULL); |
93c66552 | 1430 | op_null(((LISTOP*)cUNOPo->op_first)->op_first); /* disable pushmark */ |
11343788 | 1431 | o->op_flags |= OPf_SPECIAL; |
8990e307 LW |
1432 | } |
1433 | break; | |
aeea060c | 1434 | |
463ee0b2 | 1435 | case OP_COND_EXPR: |
11343788 | 1436 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1437 | ref(kid, type); |
1438 | break; | |
8990e307 | 1439 | case OP_RV2SV: |
35cd451c GS |
1440 | if (type == OP_DEFINED) |
1441 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
11343788 | 1442 | ref(cUNOPo->op_first, o->op_type); |
4633a7c4 LW |
1443 | /* FALL THROUGH */ |
1444 | case OP_PADSV: | |
5f05dabc | 1445 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1446 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1447 | : type == OP_RV2HV ? OPpDEREF_HV | |
1448 | : OPpDEREF_SV); | |
11343788 | 1449 | o->op_flags |= OPf_MOD; |
a0d0e21e | 1450 | } |
8990e307 | 1451 | break; |
1c846c1f | 1452 | |
2faa37cc | 1453 | case OP_THREADSV: |
a863c7d1 MB |
1454 | o->op_flags |= OPf_MOD; /* XXX ??? */ |
1455 | break; | |
1456 | ||
463ee0b2 LW |
1457 | case OP_RV2AV: |
1458 | case OP_RV2HV: | |
aeea060c | 1459 | o->op_flags |= OPf_REF; |
8990e307 | 1460 | /* FALL THROUGH */ |
463ee0b2 | 1461 | case OP_RV2GV: |
35cd451c GS |
1462 | if (type == OP_DEFINED) |
1463 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
11343788 | 1464 | ref(cUNOPo->op_first, o->op_type); |
463ee0b2 | 1465 | break; |
8990e307 | 1466 | |
463ee0b2 LW |
1467 | case OP_PADAV: |
1468 | case OP_PADHV: | |
aeea060c | 1469 | o->op_flags |= OPf_REF; |
79072805 | 1470 | break; |
aeea060c | 1471 | |
8990e307 | 1472 | case OP_SCALAR: |
79072805 | 1473 | case OP_NULL: |
11343788 | 1474 | if (!(o->op_flags & OPf_KIDS)) |
463ee0b2 | 1475 | break; |
11343788 | 1476 | ref(cBINOPo->op_first, type); |
79072805 LW |
1477 | break; |
1478 | case OP_AELEM: | |
1479 | case OP_HELEM: | |
11343788 | 1480 | ref(cBINOPo->op_first, o->op_type); |
5f05dabc | 1481 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1482 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1483 | : type == OP_RV2HV ? OPpDEREF_HV | |
1484 | : OPpDEREF_SV); | |
11343788 | 1485 | o->op_flags |= OPf_MOD; |
8990e307 | 1486 | } |
79072805 LW |
1487 | break; |
1488 | ||
463ee0b2 | 1489 | case OP_SCOPE: |
79072805 LW |
1490 | case OP_LEAVE: |
1491 | case OP_ENTER: | |
8990e307 | 1492 | case OP_LIST: |
11343788 | 1493 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1494 | break; |
11343788 | 1495 | ref(cLISTOPo->op_last, type); |
79072805 | 1496 | break; |
a0d0e21e LW |
1497 | default: |
1498 | break; | |
79072805 | 1499 | } |
11343788 | 1500 | return scalar(o); |
8990e307 | 1501 | |
79072805 LW |
1502 | } |
1503 | ||
09bef843 SB |
1504 | STATIC OP * |
1505 | S_dup_attrlist(pTHX_ OP *o) | |
1506 | { | |
1507 | OP *rop = Nullop; | |
1508 | ||
1509 | /* An attrlist is either a simple OP_CONST or an OP_LIST with kids, | |
1510 | * where the first kid is OP_PUSHMARK and the remaining ones | |
1511 | * are OP_CONST. We need to push the OP_CONST values. | |
1512 | */ | |
1513 | if (o->op_type == OP_CONST) | |
1514 | rop = newSVOP(OP_CONST, o->op_flags, SvREFCNT_inc(cSVOPo->op_sv)); | |
1515 | else { | |
1516 | assert((o->op_type == OP_LIST) && (o->op_flags & OPf_KIDS)); | |
1517 | for (o = cLISTOPo->op_first; o; o=o->op_sibling) { | |
1518 | if (o->op_type == OP_CONST) | |
1519 | rop = append_elem(OP_LIST, rop, | |
1520 | newSVOP(OP_CONST, o->op_flags, | |
1521 | SvREFCNT_inc(cSVOPo->op_sv))); | |
1522 | } | |
1523 | } | |
1524 | return rop; | |
1525 | } | |
1526 | ||
1527 | STATIC void | |
95f0a2f1 | 1528 | S_apply_attrs(pTHX_ HV *stash, SV *target, OP *attrs, bool for_my) |
09bef843 | 1529 | { |
27da23d5 | 1530 | dVAR; |
09bef843 SB |
1531 | SV *stashsv; |
1532 | ||
1533 | /* fake up C<use attributes $pkg,$rv,@attrs> */ | |
1534 | ENTER; /* need to protect against side-effects of 'use' */ | |
1535 | SAVEINT(PL_expect); | |
5aaec2b4 | 1536 | stashsv = stash ? newSVhek(HvNAME_HEK(stash)) : &PL_sv_no; |
e4783991 | 1537 | |
09bef843 | 1538 | #define ATTRSMODULE "attributes" |
95f0a2f1 SB |
1539 | #define ATTRSMODULE_PM "attributes.pm" |
1540 | ||
1541 | if (for_my) { | |
95f0a2f1 | 1542 | /* Don't force the C<use> if we don't need it. */ |
504618e9 | 1543 | SV **svp = hv_fetch(GvHVn(PL_incgv), ATTRSMODULE_PM, |
95f0a2f1 SB |
1544 | sizeof(ATTRSMODULE_PM)-1, 0); |
1545 | if (svp && *svp != &PL_sv_undef) | |
1546 | ; /* already in %INC */ | |
1547 | else | |
1548 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, | |
1549 | newSVpvn(ATTRSMODULE, sizeof(ATTRSMODULE)-1), | |
1550 | Nullsv); | |
1551 | } | |
1552 | else { | |
1553 | Perl_load_module(aTHX_ PERL_LOADMOD_IMPORT_OPS, | |
1554 | newSVpvn(ATTRSMODULE, sizeof(ATTRSMODULE)-1), | |
1555 | Nullsv, | |
1556 | prepend_elem(OP_LIST, | |
1557 | newSVOP(OP_CONST, 0, stashsv), | |
1558 | prepend_elem(OP_LIST, | |
1559 | newSVOP(OP_CONST, 0, | |
1560 | newRV(target)), | |
1561 | dup_attrlist(attrs)))); | |
1562 | } | |
09bef843 SB |
1563 | LEAVE; |
1564 | } | |
1565 | ||
95f0a2f1 SB |
1566 | STATIC void |
1567 | S_apply_attrs_my(pTHX_ HV *stash, OP *target, OP *attrs, OP **imopsp) | |
1568 | { | |
1569 | OP *pack, *imop, *arg; | |
1570 | SV *meth, *stashsv; | |
1571 | ||
1572 | if (!attrs) | |
1573 | return; | |
1574 | ||
1575 | assert(target->op_type == OP_PADSV || | |
1576 | target->op_type == OP_PADHV || | |
1577 | target->op_type == OP_PADAV); | |
1578 | ||
1579 | /* Ensure that attributes.pm is loaded. */ | |
dd2155a4 | 1580 | apply_attrs(stash, PAD_SV(target->op_targ), attrs, TRUE); |
95f0a2f1 SB |
1581 | |
1582 | /* Need package name for method call. */ | |
1583 | pack = newSVOP(OP_CONST, 0, newSVpvn(ATTRSMODULE, sizeof(ATTRSMODULE)-1)); | |
1584 | ||
1585 | /* Build up the real arg-list. */ | |
5aaec2b4 NC |
1586 | stashsv = stash ? newSVhek(HvNAME_HEK(stash)) : &PL_sv_no; |
1587 | ||
95f0a2f1 SB |
1588 | arg = newOP(OP_PADSV, 0); |
1589 | arg->op_targ = target->op_targ; | |
1590 | arg = prepend_elem(OP_LIST, | |
1591 | newSVOP(OP_CONST, 0, stashsv), | |
1592 | prepend_elem(OP_LIST, | |
1593 | newUNOP(OP_REFGEN, 0, | |
1594 | mod(arg, OP_REFGEN)), | |
1595 | dup_attrlist(attrs))); | |
1596 | ||
1597 | /* Fake up a method call to import */ | |
427d62a4 | 1598 | meth = newSVpvn_share("import", 6, 0); |
95f0a2f1 SB |
1599 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL|OPf_WANT_VOID, |
1600 | append_elem(OP_LIST, | |
1601 | prepend_elem(OP_LIST, pack, list(arg)), | |
1602 | newSVOP(OP_METHOD_NAMED, 0, meth))); | |
1603 | imop->op_private |= OPpENTERSUB_NOMOD; | |
1604 | ||
1605 | /* Combine the ops. */ | |
1606 | *imopsp = append_elem(OP_LIST, *imopsp, imop); | |
1607 | } | |
1608 | ||
1609 | /* | |
1610 | =notfor apidoc apply_attrs_string | |
1611 | ||
1612 | Attempts to apply a list of attributes specified by the C<attrstr> and | |
1613 | C<len> arguments to the subroutine identified by the C<cv> argument which | |
1614 | is expected to be associated with the package identified by the C<stashpv> | |
1615 | argument (see L<attributes>). It gets this wrong, though, in that it | |
1616 | does not correctly identify the boundaries of the individual attribute | |
1617 | specifications within C<attrstr>. This is not really intended for the | |
1618 | public API, but has to be listed here for systems such as AIX which | |
1619 | need an explicit export list for symbols. (It's called from XS code | |
1620 | in support of the C<ATTRS:> keyword from F<xsubpp>.) Patches to fix it | |
1621 | to respect attribute syntax properly would be welcome. | |
1622 | ||
1623 | =cut | |
1624 | */ | |
1625 | ||
be3174d2 | 1626 | void |
6867be6d AL |
1627 | Perl_apply_attrs_string(pTHX_ const char *stashpv, CV *cv, |
1628 | const char *attrstr, STRLEN len) | |
be3174d2 GS |
1629 | { |
1630 | OP *attrs = Nullop; | |
1631 | ||
1632 | if (!len) { | |
1633 | len = strlen(attrstr); | |
1634 | } | |
1635 | ||
1636 | while (len) { | |
1637 | for (; isSPACE(*attrstr) && len; --len, ++attrstr) ; | |
1638 | if (len) { | |
6867be6d | 1639 | const char *sstr = attrstr; |
be3174d2 GS |
1640 | for (; !isSPACE(*attrstr) && len; --len, ++attrstr) ; |
1641 | attrs = append_elem(OP_LIST, attrs, | |
1642 | newSVOP(OP_CONST, 0, | |
1643 | newSVpvn(sstr, attrstr-sstr))); | |
1644 | } | |
1645 | } | |
1646 | ||
1647 | Perl_load_module(aTHX_ PERL_LOADMOD_IMPORT_OPS, | |
1648 | newSVpvn(ATTRSMODULE, sizeof(ATTRSMODULE)-1), | |
1649 | Nullsv, prepend_elem(OP_LIST, | |
1650 | newSVOP(OP_CONST, 0, newSVpv(stashpv,0)), | |
1651 | prepend_elem(OP_LIST, | |
1652 | newSVOP(OP_CONST, 0, | |
1653 | newRV((SV*)cv)), | |
1654 | attrs))); | |
1655 | } | |
1656 | ||
09bef843 | 1657 | STATIC OP * |
95f0a2f1 | 1658 | S_my_kid(pTHX_ OP *o, OP *attrs, OP **imopsp) |
93a17b20 | 1659 | { |
93a17b20 LW |
1660 | I32 type; |
1661 | ||
3280af22 | 1662 | if (!o || PL_error_count) |
11343788 | 1663 | return o; |
93a17b20 | 1664 | |
11343788 | 1665 | type = o->op_type; |
93a17b20 | 1666 | if (type == OP_LIST) { |
6867be6d | 1667 | OP *kid; |
11343788 | 1668 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
95f0a2f1 | 1669 | my_kid(kid, attrs, imopsp); |
dab48698 | 1670 | } else if (type == OP_UNDEF) { |
7766148a | 1671 | return o; |
77ca0c92 LW |
1672 | } else if (type == OP_RV2SV || /* "our" declaration */ |
1673 | type == OP_RV2AV || | |
1674 | type == OP_RV2HV) { /* XXX does this let anything illegal in? */ | |
1ce0b88c RGS |
1675 | if (cUNOPo->op_first->op_type != OP_GV) { /* MJD 20011224 */ |
1676 | yyerror(Perl_form(aTHX_ "Can't declare %s in %s", | |
1677 | OP_DESC(o), PL_in_my == KEY_our ? "our" : "my")); | |
1678 | } else if (attrs) { | |
1679 | GV *gv = cGVOPx_gv(cUNOPo->op_first); | |
1680 | PL_in_my = FALSE; | |
1681 | PL_in_my_stash = Nullhv; | |
1682 | apply_attrs(GvSTASH(gv), | |
1683 | (type == OP_RV2SV ? GvSV(gv) : | |
1684 | type == OP_RV2AV ? (SV*)GvAV(gv) : | |
1685 | type == OP_RV2HV ? (SV*)GvHV(gv) : (SV*)gv), | |
1686 | attrs, FALSE); | |
1687 | } | |
192587c2 | 1688 | o->op_private |= OPpOUR_INTRO; |
77ca0c92 | 1689 | return o; |
95f0a2f1 SB |
1690 | } |
1691 | else if (type != OP_PADSV && | |
93a17b20 LW |
1692 | type != OP_PADAV && |
1693 | type != OP_PADHV && | |
1694 | type != OP_PUSHMARK) | |
1695 | { | |
eb64745e | 1696 | yyerror(Perl_form(aTHX_ "Can't declare %s in \"%s\"", |
53e06cf0 | 1697 | OP_DESC(o), |
eb64745e | 1698 | PL_in_my == KEY_our ? "our" : "my")); |
11343788 | 1699 | return o; |
93a17b20 | 1700 | } |
09bef843 SB |
1701 | else if (attrs && type != OP_PUSHMARK) { |
1702 | HV *stash; | |
09bef843 | 1703 | |
eb64745e GS |
1704 | PL_in_my = FALSE; |
1705 | PL_in_my_stash = Nullhv; | |
1706 | ||
09bef843 | 1707 | /* check for C<my Dog $spot> when deciding package */ |
dd2155a4 DM |
1708 | stash = PAD_COMPNAME_TYPE(o->op_targ); |
1709 | if (!stash) | |
09bef843 | 1710 | stash = PL_curstash; |
95f0a2f1 | 1711 | apply_attrs_my(stash, o, attrs, imopsp); |
09bef843 | 1712 | } |
11343788 MB |
1713 | o->op_flags |= OPf_MOD; |
1714 | o->op_private |= OPpLVAL_INTRO; | |
1715 | return o; | |
93a17b20 LW |
1716 | } |
1717 | ||
1718 | OP * | |
09bef843 SB |
1719 | Perl_my_attrs(pTHX_ OP *o, OP *attrs) |
1720 | { | |
95f0a2f1 SB |
1721 | OP *rops = Nullop; |
1722 | int maybe_scalar = 0; | |
1723 | ||
d2be0de5 | 1724 | /* [perl #17376]: this appears to be premature, and results in code such as |
c754c3d7 | 1725 | C< our(%x); > executing in list mode rather than void mode */ |
d2be0de5 | 1726 | #if 0 |
09bef843 SB |
1727 | if (o->op_flags & OPf_PARENS) |
1728 | list(o); | |
95f0a2f1 SB |
1729 | else |
1730 | maybe_scalar = 1; | |
d2be0de5 YST |
1731 | #else |
1732 | maybe_scalar = 1; | |
1733 | #endif | |
09bef843 SB |
1734 | if (attrs) |
1735 | SAVEFREEOP(attrs); | |
95f0a2f1 SB |
1736 | o = my_kid(o, attrs, &rops); |
1737 | if (rops) { | |
1738 | if (maybe_scalar && o->op_type == OP_PADSV) { | |
1739 | o = scalar(append_list(OP_LIST, (LISTOP*)rops, (LISTOP*)o)); | |
1740 | o->op_private |= OPpLVAL_INTRO; | |
1741 | } | |
1742 | else | |
1743 | o = append_list(OP_LIST, (LISTOP*)o, (LISTOP*)rops); | |
1744 | } | |
eb64745e GS |
1745 | PL_in_my = FALSE; |
1746 | PL_in_my_stash = Nullhv; | |
1747 | return o; | |
09bef843 SB |
1748 | } |
1749 | ||
1750 | OP * | |
1751 | Perl_my(pTHX_ OP *o) | |
1752 | { | |
95f0a2f1 | 1753 | return my_attrs(o, Nullop); |
09bef843 SB |
1754 | } |
1755 | ||
1756 | OP * | |
864dbfa3 | 1757 | Perl_sawparens(pTHX_ OP *o) |
79072805 LW |
1758 | { |
1759 | if (o) | |
1760 | o->op_flags |= OPf_PARENS; | |
1761 | return o; | |
1762 | } | |
1763 | ||
1764 | OP * | |
864dbfa3 | 1765 | Perl_bind_match(pTHX_ I32 type, OP *left, OP *right) |
79072805 | 1766 | { |
11343788 | 1767 | OP *o; |
59f00321 | 1768 | bool ismatchop = 0; |
79072805 | 1769 | |
e476b1b5 | 1770 | if (ckWARN(WARN_MISC) && |
599cee73 PM |
1771 | (left->op_type == OP_RV2AV || |
1772 | left->op_type == OP_RV2HV || | |
1773 | left->op_type == OP_PADAV || | |
1774 | left->op_type == OP_PADHV)) { | |
e1ec3a88 | 1775 | const char *desc = PL_op_desc[(right->op_type == OP_SUBST || |
599cee73 PM |
1776 | right->op_type == OP_TRANS) |
1777 | ? right->op_type : OP_MATCH]; | |
dff6d3cd GS |
1778 | const char *sample = ((left->op_type == OP_RV2AV || |
1779 | left->op_type == OP_PADAV) | |
1780 | ? "@array" : "%hash"); | |
9014280d | 1781 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
1c846c1f | 1782 | "Applying %s to %s will act on scalar(%s)", |
599cee73 | 1783 | desc, sample, sample); |
2ae324a7 | 1784 | } |
1785 | ||
5cc9e5c9 RH |
1786 | if (right->op_type == OP_CONST && |
1787 | cSVOPx(right)->op_private & OPpCONST_BARE && | |
1788 | cSVOPx(right)->op_private & OPpCONST_STRICT) | |
1789 | { | |
1790 | no_bareword_allowed(right); | |
1791 | } | |
1792 | ||
59f00321 RGS |
1793 | ismatchop = right->op_type == OP_MATCH || |
1794 | right->op_type == OP_SUBST || | |
1795 | right->op_type == OP_TRANS; | |
1796 | if (ismatchop && right->op_private & OPpTARGET_MY) { | |
1797 | right->op_targ = 0; | |
1798 | right->op_private &= ~OPpTARGET_MY; | |
1799 | } | |
1800 | if (!(right->op_flags & OPf_STACKED) && ismatchop) { | |
79072805 | 1801 | right->op_flags |= OPf_STACKED; |
18808301 JH |
1802 | if (right->op_type != OP_MATCH && |
1803 | ! (right->op_type == OP_TRANS && | |
1804 | right->op_private & OPpTRANS_IDENTICAL)) | |
463ee0b2 | 1805 | left = mod(left, right->op_type); |
79072805 | 1806 | if (right->op_type == OP_TRANS) |
11343788 | 1807 | o = newBINOP(OP_NULL, OPf_STACKED, scalar(left), right); |
79072805 | 1808 | else |
11343788 | 1809 | o = prepend_elem(right->op_type, scalar(left), right); |
79072805 | 1810 | if (type == OP_NOT) |
11343788 MB |
1811 | return newUNOP(OP_NOT, 0, scalar(o)); |
1812 | return o; | |
79072805 LW |
1813 | } |
1814 | else | |
1815 | return bind_match(type, left, | |
131b3ad0 | 1816 | pmruntime(newPMOP(OP_MATCH, 0), right, 0)); |
79072805 LW |
1817 | } |
1818 | ||
1819 | OP * | |
864dbfa3 | 1820 | Perl_invert(pTHX_ OP *o) |
79072805 | 1821 | { |
11343788 MB |
1822 | if (!o) |
1823 | return o; | |
79072805 | 1824 | /* XXX need to optimize away NOT NOT here? Or do we let optimizer do it? */ |
11343788 | 1825 | return newUNOP(OP_NOT, OPf_SPECIAL, scalar(o)); |
79072805 LW |
1826 | } |
1827 | ||
1828 | OP * | |
864dbfa3 | 1829 | Perl_scope(pTHX_ OP *o) |
79072805 | 1830 | { |
27da23d5 | 1831 | dVAR; |
79072805 | 1832 | if (o) { |
3280af22 | 1833 | if (o->op_flags & OPf_PARENS || PERLDB_NOOPT || PL_tainting) { |
463ee0b2 LW |
1834 | o = prepend_elem(OP_LINESEQ, newOP(OP_ENTER, 0), o); |
1835 | o->op_type = OP_LEAVE; | |
22c35a8c | 1836 | o->op_ppaddr = PL_ppaddr[OP_LEAVE]; |
463ee0b2 | 1837 | } |
fdb22418 HS |
1838 | else if (o->op_type == OP_LINESEQ) { |
1839 | OP *kid; | |
1840 | o->op_type = OP_SCOPE; | |
1841 | o->op_ppaddr = PL_ppaddr[OP_SCOPE]; | |
1842 | kid = ((LISTOP*)o)->op_first; | |
1843 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) | |
1844 | op_null(kid); | |
463ee0b2 | 1845 | } |
fdb22418 HS |
1846 | else |
1847 | o = newLISTOP(OP_SCOPE, 0, o, Nullop); | |
79072805 LW |
1848 | } |
1849 | return o; | |
1850 | } | |
1851 | ||
dfa41748 | 1852 | /* XXX kept for BINCOMPAT only */ |
b3ac6de7 | 1853 | void |
864dbfa3 | 1854 | Perl_save_hints(pTHX) |
b3ac6de7 | 1855 | { |
dfa41748 | 1856 | Perl_croak(aTHX_ "internal error: obsolete function save_hints() called"); |
b3ac6de7 IZ |
1857 | } |
1858 | ||
a0d0e21e | 1859 | int |
864dbfa3 | 1860 | Perl_block_start(pTHX_ int full) |
79072805 | 1861 | { |
73d840c0 | 1862 | const int retval = PL_savestack_ix; |
dd2155a4 | 1863 | pad_block_start(full); |
b3ac6de7 | 1864 | SAVEHINTS(); |
3280af22 | 1865 | PL_hints &= ~HINT_BLOCK_SCOPE; |
1c846c1f | 1866 | SAVESPTR(PL_compiling.cop_warnings); |
0453d815 | 1867 | if (! specialWARN(PL_compiling.cop_warnings)) { |
599cee73 PM |
1868 | PL_compiling.cop_warnings = newSVsv(PL_compiling.cop_warnings) ; |
1869 | SAVEFREESV(PL_compiling.cop_warnings) ; | |
1870 | } | |
ac27b0f5 NIS |
1871 | SAVESPTR(PL_compiling.cop_io); |
1872 | if (! specialCopIO(PL_compiling.cop_io)) { | |
1873 | PL_compiling.cop_io = newSVsv(PL_compiling.cop_io) ; | |
1874 | SAVEFREESV(PL_compiling.cop_io) ; | |
1875 | } | |
a0d0e21e LW |
1876 | return retval; |
1877 | } | |
1878 | ||
1879 | OP* | |
864dbfa3 | 1880 | Perl_block_end(pTHX_ I32 floor, OP *seq) |
a0d0e21e | 1881 | { |
6867be6d | 1882 | const int needblockscope = PL_hints & HINT_BLOCK_SCOPE; |
e9f19e3c | 1883 | OP* retval = scalarseq(seq); |
e9818f4e | 1884 | LEAVE_SCOPE(floor); |
eb160463 | 1885 | PL_compiling.op_private = (U8)(PL_hints & HINT_PRIVATE_MASK); |
a0d0e21e | 1886 | if (needblockscope) |
3280af22 | 1887 | PL_hints |= HINT_BLOCK_SCOPE; /* propagate out */ |
dd2155a4 | 1888 | pad_leavemy(); |
a0d0e21e LW |
1889 | return retval; |
1890 | } | |
1891 | ||
76e3520e | 1892 | STATIC OP * |
cea2e8a9 | 1893 | S_newDEFSVOP(pTHX) |
54b9620d | 1894 | { |
6867be6d | 1895 | const I32 offset = pad_findmy("$_"); |
59f00321 RGS |
1896 | if (offset == NOT_IN_PAD || PAD_COMPNAME_FLAGS(offset) & SVpad_OUR) { |
1897 | return newSVREF(newGVOP(OP_GV, 0, PL_defgv)); | |
1898 | } | |
1899 | else { | |
1900 | OP *o = newOP(OP_PADSV, 0); | |
1901 | o->op_targ = offset; | |
1902 | return o; | |
1903 | } | |
54b9620d MB |
1904 | } |
1905 | ||
a0d0e21e | 1906 | void |
864dbfa3 | 1907 | Perl_newPROG(pTHX_ OP *o) |
a0d0e21e | 1908 | { |
3280af22 | 1909 | if (PL_in_eval) { |
b295d113 TH |
1910 | if (PL_eval_root) |
1911 | return; | |
faef0170 HS |
1912 | PL_eval_root = newUNOP(OP_LEAVEEVAL, |
1913 | ((PL_in_eval & EVAL_KEEPERR) | |
1914 | ? OPf_SPECIAL : 0), o); | |
3280af22 | 1915 | PL_eval_start = linklist(PL_eval_root); |
7934575e GS |
1916 | PL_eval_root->op_private |= OPpREFCOUNTED; |
1917 | OpREFCNT_set(PL_eval_root, 1); | |
3280af22 | 1918 | PL_eval_root->op_next = 0; |
a2efc822 | 1919 | CALL_PEEP(PL_eval_start); |
a0d0e21e LW |
1920 | } |
1921 | else { | |
6be89cf9 AE |
1922 | if (o->op_type == OP_STUB) { |
1923 | PL_comppad_name = 0; | |
1924 | PL_compcv = 0; | |
2a4f803a | 1925 | FreeOp(o); |
a0d0e21e | 1926 | return; |
6be89cf9 | 1927 | } |
3280af22 NIS |
1928 | PL_main_root = scope(sawparens(scalarvoid(o))); |
1929 | PL_curcop = &PL_compiling; | |
1930 | PL_main_start = LINKLIST(PL_main_root); | |
7934575e GS |
1931 | PL_main_root->op_private |= OPpREFCOUNTED; |
1932 | OpREFCNT_set(PL_main_root, 1); | |
3280af22 | 1933 | PL_main_root->op_next = 0; |
a2efc822 | 1934 | CALL_PEEP(PL_main_start); |
3280af22 | 1935 | PL_compcv = 0; |
3841441e | 1936 | |
4fdae800 | 1937 | /* Register with debugger */ |
84902520 | 1938 | if (PERLDB_INTER) { |
864dbfa3 | 1939 | CV *cv = get_cv("DB::postponed", FALSE); |
3841441e CS |
1940 | if (cv) { |
1941 | dSP; | |
924508f0 | 1942 | PUSHMARK(SP); |
cc49e20b | 1943 | XPUSHs((SV*)CopFILEGV(&PL_compiling)); |
3841441e | 1944 | PUTBACK; |
864dbfa3 | 1945 | call_sv((SV*)cv, G_DISCARD); |
3841441e CS |
1946 | } |
1947 | } | |
79072805 | 1948 | } |
79072805 LW |
1949 | } |
1950 | ||
1951 | OP * | |
864dbfa3 | 1952 | Perl_localize(pTHX_ OP *o, I32 lex) |
79072805 LW |
1953 | { |
1954 | if (o->op_flags & OPf_PARENS) | |
d2be0de5 YST |
1955 | /* [perl #17376]: this appears to be premature, and results in code such as |
1956 | C< our(%x); > executing in list mode rather than void mode */ | |
1957 | #if 0 | |
79072805 | 1958 | list(o); |
d2be0de5 YST |
1959 | #else |
1960 | ; | |
1961 | #endif | |
8990e307 | 1962 | else { |
64420d0d JH |
1963 | if (ckWARN(WARN_PARENTHESIS) |
1964 | && PL_bufptr > PL_oldbufptr && PL_bufptr[-1] == ',') | |
1965 | { | |
1966 | char *s = PL_bufptr; | |
bac662ee | 1967 | bool sigil = FALSE; |
64420d0d | 1968 | |
8473848f | 1969 | /* some heuristics to detect a potential error */ |
bac662ee | 1970 | while (*s && (strchr(", \t\n", *s))) |
64420d0d | 1971 | s++; |
8473848f | 1972 | |
bac662ee TS |
1973 | while (1) { |
1974 | if (*s && strchr("@$%*", *s) && *++s | |
1975 | && (isALNUM(*s) || UTF8_IS_CONTINUED(*s))) { | |
1976 | s++; | |
1977 | sigil = TRUE; | |
1978 | while (*s && (isALNUM(*s) || UTF8_IS_CONTINUED(*s))) | |
1979 | s++; | |
1980 | while (*s && (strchr(", \t\n", *s))) | |
1981 | s++; | |
1982 | } | |
1983 | else | |
1984 | break; | |
1985 | } | |
1986 | if (sigil && (*s == ';' || *s == '=')) { | |
1987 | Perl_warner(aTHX_ packWARN(WARN_PARENTHESIS), | |
8473848f RGS |
1988 | "Parentheses missing around \"%s\" list", |
1989 | lex ? (PL_in_my == KEY_our ? "our" : "my") | |
1990 | : "local"); | |
1991 | } | |
8990e307 LW |
1992 | } |
1993 | } | |
93a17b20 | 1994 | if (lex) |
eb64745e | 1995 | o = my(o); |
93a17b20 | 1996 | else |
eb64745e GS |
1997 | o = mod(o, OP_NULL); /* a bit kludgey */ |
1998 | PL_in_my = FALSE; | |
1999 | PL_in_my_stash = Nullhv; | |
2000 | return o; | |
79072805 LW |
2001 | } |
2002 | ||
2003 | OP * | |
864dbfa3 | 2004 | Perl_jmaybe(pTHX_ OP *o) |
79072805 LW |
2005 | { |
2006 | if (o->op_type == OP_LIST) { | |
554b3eca | 2007 | OP *o2; |
554b3eca | 2008 | o2 = newSVREF(newGVOP(OP_GV, 0, gv_fetchpv(";", TRUE, SVt_PV))), |
554b3eca | 2009 | o = convert(OP_JOIN, 0, prepend_elem(OP_LIST, o2, o)); |
79072805 LW |
2010 | } |
2011 | return o; | |
2012 | } | |
2013 | ||
2014 | OP * | |
864dbfa3 | 2015 | Perl_fold_constants(pTHX_ register OP *o) |
79072805 | 2016 | { |
27da23d5 | 2017 | dVAR; |
79072805 LW |
2018 | register OP *curop; |
2019 | I32 type = o->op_type; | |
748a9306 | 2020 | SV *sv; |
79072805 | 2021 | |
22c35a8c | 2022 | if (PL_opargs[type] & OA_RETSCALAR) |
79072805 | 2023 | scalar(o); |
b162f9ea | 2024 | if (PL_opargs[type] & OA_TARGET && !o->op_targ) |
ed6116ce | 2025 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 | 2026 | |
eac055e9 GS |
2027 | /* integerize op, unless it happens to be C<-foo>. |
2028 | * XXX should pp_i_negate() do magic string negation instead? */ | |
2029 | if ((PL_opargs[type] & OA_OTHERINT) && (PL_hints & HINT_INTEGER) | |
2030 | && !(type == OP_NEGATE && cUNOPo->op_first->op_type == OP_CONST | |
2031 | && (cUNOPo->op_first->op_private & OPpCONST_BARE))) | |
2032 | { | |
22c35a8c | 2033 | o->op_ppaddr = PL_ppaddr[type = ++(o->op_type)]; |
eac055e9 | 2034 | } |
85e6fe83 | 2035 | |
22c35a8c | 2036 | if (!(PL_opargs[type] & OA_FOLDCONST)) |
79072805 LW |
2037 | goto nope; |
2038 | ||
de939608 | 2039 | switch (type) { |
7a52d87a GS |
2040 | case OP_NEGATE: |
2041 | /* XXX might want a ck_negate() for this */ | |
2042 | cUNOPo->op_first->op_private &= ~OPpCONST_STRICT; | |
2043 | break; | |
de939608 CS |
2044 | case OP_SPRINTF: |
2045 | case OP_UCFIRST: | |
2046 | case OP_LCFIRST: | |
2047 | case OP_UC: | |
2048 | case OP_LC: | |
69dcf70c MB |
2049 | case OP_SLT: |
2050 | case OP_SGT: | |
2051 | case OP_SLE: | |
2052 | case OP_SGE: | |
2053 | case OP_SCMP: | |
2de3dbcc JH |
2054 | /* XXX what about the numeric ops? */ |
2055 | if (PL_hints & HINT_LOCALE) | |
de939608 CS |
2056 | goto nope; |
2057 | } | |
2058 | ||
3280af22 | 2059 | if (PL_error_count) |
a0d0e21e LW |
2060 | goto nope; /* Don't try to run w/ errors */ |
2061 | ||
79072805 | 2062 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
11fa937b GS |
2063 | if ((curop->op_type != OP_CONST || |
2064 | (curop->op_private & OPpCONST_BARE)) && | |
7a52d87a GS |
2065 | curop->op_type != OP_LIST && |
2066 | curop->op_type != OP_SCALAR && | |
2067 | curop->op_type != OP_NULL && | |
2068 | curop->op_type != OP_PUSHMARK) | |
2069 | { | |
79072805 LW |
2070 | goto nope; |
2071 | } | |
2072 | } | |
2073 | ||
2074 | curop = LINKLIST(o); | |
2075 | o->op_next = 0; | |
533c011a | 2076 | PL_op = curop; |
cea2e8a9 | 2077 | CALLRUNOPS(aTHX); |
3280af22 | 2078 | sv = *(PL_stack_sp--); |
748a9306 | 2079 | if (o->op_targ && sv == PAD_SV(o->op_targ)) /* grab pad temp? */ |
dd2155a4 | 2080 | pad_swipe(o->op_targ, FALSE); |
748a9306 LW |
2081 | else if (SvTEMP(sv)) { /* grab mortal temp? */ |
2082 | (void)SvREFCNT_inc(sv); | |
2083 | SvTEMP_off(sv); | |
85e6fe83 | 2084 | } |
79072805 LW |
2085 | op_free(o); |
2086 | if (type == OP_RV2GV) | |
b1cb66bf | 2087 | return newGVOP(OP_GV, 0, (GV*)sv); |
52a96ae6 | 2088 | return newSVOP(OP_CONST, 0, sv); |
aeea060c | 2089 | |
79072805 | 2090 | nope: |
79072805 LW |
2091 | return o; |
2092 | } | |
2093 | ||
2094 | OP * | |
864dbfa3 | 2095 | Perl_gen_constant_list(pTHX_ register OP *o) |
79072805 | 2096 | { |
27da23d5 | 2097 | dVAR; |
79072805 | 2098 | register OP *curop; |
6867be6d | 2099 | const I32 oldtmps_floor = PL_tmps_floor; |
79072805 | 2100 | |
a0d0e21e | 2101 | list(o); |
3280af22 | 2102 | if (PL_error_count) |
a0d0e21e LW |
2103 | return o; /* Don't attempt to run with errors */ |
2104 | ||
533c011a | 2105 | PL_op = curop = LINKLIST(o); |
a0d0e21e | 2106 | o->op_next = 0; |
a2efc822 | 2107 | CALL_PEEP(curop); |
cea2e8a9 GS |
2108 | pp_pushmark(); |
2109 | CALLRUNOPS(aTHX); | |
533c011a | 2110 | PL_op = curop; |
cea2e8a9 | 2111 | pp_anonlist(); |
3280af22 | 2112 | PL_tmps_floor = oldtmps_floor; |
79072805 LW |
2113 | |
2114 | o->op_type = OP_RV2AV; | |
22c35a8c | 2115 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
fb53bbb2 SG |
2116 | o->op_flags &= ~OPf_REF; /* treat \(1..2) like an ordinary list */ |
2117 | o->op_flags |= OPf_PARENS; /* and flatten \(1..2,3) */ | |
2814eb74 | 2118 | o->op_opt = 0; /* needs to be revisited in peep() */ |
79072805 | 2119 | curop = ((UNOP*)o)->op_first; |
3280af22 | 2120 | ((UNOP*)o)->op_first = newSVOP(OP_CONST, 0, SvREFCNT_inc(*PL_stack_sp--)); |
79072805 | 2121 | op_free(curop); |
79072805 LW |
2122 | linklist(o); |
2123 | return list(o); | |
2124 | } | |
2125 | ||
2126 | OP * | |
864dbfa3 | 2127 | Perl_convert(pTHX_ I32 type, I32 flags, OP *o) |
79072805 | 2128 | { |
27da23d5 | 2129 | dVAR; |
11343788 MB |
2130 | if (!o || o->op_type != OP_LIST) |
2131 | o = newLISTOP(OP_LIST, 0, o, Nullop); | |
748a9306 | 2132 | else |
5dc0d613 | 2133 | o->op_flags &= ~OPf_WANT; |
79072805 | 2134 | |
22c35a8c | 2135 | if (!(PL_opargs[type] & OA_MARK)) |
93c66552 | 2136 | op_null(cLISTOPo->op_first); |
8990e307 | 2137 | |
eb160463 | 2138 | o->op_type = (OPCODE)type; |
22c35a8c | 2139 | o->op_ppaddr = PL_ppaddr[type]; |
11343788 | 2140 | o->op_flags |= flags; |
79072805 | 2141 | |
11343788 | 2142 | o = CHECKOP(type, o); |
fe2774ed | 2143 | if (o->op_type != (unsigned)type) |
11343788 | 2144 | return o; |
79072805 | 2145 | |
11343788 | 2146 | return fold_constants(o); |
79072805 LW |
2147 | } |
2148 | ||
2149 | /* List constructors */ | |
2150 | ||
2151 | OP * | |
864dbfa3 | 2152 | Perl_append_elem(pTHX_ I32 type, OP *first, OP *last) |
79072805 LW |
2153 | { |
2154 | if (!first) | |
2155 | return last; | |
8990e307 LW |
2156 | |
2157 | if (!last) | |
79072805 | 2158 | return first; |
8990e307 | 2159 | |
fe2774ed | 2160 | if (first->op_type != (unsigned)type |
155aba94 GS |
2161 | || (type == OP_LIST && (first->op_flags & OPf_PARENS))) |
2162 | { | |
2163 | return newLISTOP(type, 0, first, last); | |
2164 | } | |
79072805 | 2165 | |
a0d0e21e LW |
2166 | if (first->op_flags & OPf_KIDS) |
2167 | ((LISTOP*)first)->op_last->op_sibling = last; | |
2168 | else { | |
2169 | first->op_flags |= OPf_KIDS; | |
2170 | ((LISTOP*)first)->op_first = last; | |
2171 | } | |
2172 | ((LISTOP*)first)->op_last = last; | |
a0d0e21e | 2173 | return first; |
79072805 LW |
2174 | } |
2175 | ||
2176 | OP * | |
864dbfa3 | 2177 | Perl_append_list(pTHX_ I32 type, LISTOP *first, LISTOP *last) |
79072805 LW |
2178 | { |
2179 | if (!first) | |
2180 | return (OP*)last; | |
8990e307 LW |
2181 | |
2182 | if (!last) | |
79072805 | 2183 | return (OP*)first; |
8990e307 | 2184 | |
fe2774ed | 2185 | if (first->op_type != (unsigned)type) |
79072805 | 2186 | return prepend_elem(type, (OP*)first, (OP*)last); |
8990e307 | 2187 | |
fe2774ed | 2188 | if (last->op_type != (unsigned)type) |
79072805 LW |
2189 | return append_elem(type, (OP*)first, (OP*)last); |
2190 | ||
2191 | first->op_last->op_sibling = last->op_first; | |
2192 | first->op_last = last->op_last; | |
117dada2 | 2193 | first->op_flags |= (last->op_flags & OPf_KIDS); |
1c846c1f | 2194 | |
238a4c30 NIS |
2195 | FreeOp(last); |
2196 | ||
79072805 LW |
2197 | return (OP*)first; |
2198 | } | |
2199 | ||
2200 | OP * | |
864dbfa3 | 2201 | Perl_prepend_elem(pTHX_ I32 type, OP *first, OP *last) |
79072805 LW |
2202 | { |
2203 | if (!first) | |
2204 | return last; | |
8990e307 LW |
2205 | |
2206 | if (!last) | |
79072805 | 2207 | return first; |
8990e307 | 2208 | |
fe2774ed | 2209 | if (last->op_type == (unsigned)type) { |
8990e307 LW |
2210 | if (type == OP_LIST) { /* already a PUSHMARK there */ |
2211 | first->op_sibling = ((LISTOP*)last)->op_first->op_sibling; | |
2212 | ((LISTOP*)last)->op_first->op_sibling = first; | |
36a5d4ba DC |
2213 | if (!(first->op_flags & OPf_PARENS)) |
2214 | last->op_flags &= ~OPf_PARENS; | |
8990e307 LW |
2215 | } |
2216 | else { | |
2217 | if (!(last->op_flags & OPf_KIDS)) { | |
2218 | ((LISTOP*)last)->op_last = first; | |
2219 | last->op_flags |= OPf_KIDS; | |
2220 | } | |
2221 | first->op_sibling = ((LISTOP*)last)->op_first; | |
2222 | ((LISTOP*)last)->op_first = first; | |
79072805 | 2223 | } |
117dada2 | 2224 | last->op_flags |= OPf_KIDS; |
79072805 LW |
2225 | return last; |
2226 | } | |
2227 | ||
2228 | return newLISTOP(type, 0, first, last); | |
2229 | } | |
2230 | ||
2231 | /* Constructors */ | |
2232 | ||
2233 | OP * | |
864dbfa3 | 2234 | Perl_newNULLLIST(pTHX) |
79072805 | 2235 | { |
8990e307 LW |
2236 | return newOP(OP_STUB, 0); |
2237 | } | |
2238 | ||
2239 | OP * | |
864dbfa3 | 2240 | Perl_force_list(pTHX_ OP *o) |
8990e307 | 2241 | { |
11343788 MB |
2242 | if (!o || o->op_type != OP_LIST) |
2243 | o = newLISTOP(OP_LIST, 0, o, Nullop); | |
93c66552 | 2244 | op_null(o); |
11343788 | 2245 | return o; |
79072805 LW |
2246 | } |
2247 | ||
2248 | OP * | |
864dbfa3 | 2249 | Perl_newLISTOP(pTHX_ I32 type, I32 flags, OP *first, OP *last) |
79072805 | 2250 | { |
27da23d5 | 2251 | dVAR; |
79072805 LW |
2252 | LISTOP *listop; |
2253 | ||
b7dc083c | 2254 | NewOp(1101, listop, 1, LISTOP); |
79072805 | 2255 | |
eb160463 | 2256 | listop->op_type = (OPCODE)type; |
22c35a8c | 2257 | listop->op_ppaddr = PL_ppaddr[type]; |
117dada2 SM |
2258 | if (first || last) |
2259 | flags |= OPf_KIDS; | |
eb160463 | 2260 | listop->op_flags = (U8)flags; |
79072805 LW |
2261 | |
2262 | if (!last && first) | |
2263 | last = first; | |
2264 | else if (!first && last) | |
2265 | first = last; | |
8990e307 LW |
2266 | else if (first) |
2267 | first->op_sibling = last; | |
79072805 LW |
2268 | listop->op_first = first; |
2269 | listop->op_last = last; | |
8990e307 LW |
2270 | if (type == OP_LIST) { |
2271 | OP* pushop; | |
2272 | pushop = newOP(OP_PUSHMARK, 0); | |
2273 | pushop->op_sibling = first; | |
2274 | listop->op_first = pushop; | |
2275 | listop->op_flags |= OPf_KIDS; | |
2276 | if (!last) | |
2277 | listop->op_last = pushop; | |
2278 | } | |
79072805 | 2279 | |
463d09e6 | 2280 | return CHECKOP(type, listop); |
79072805 LW |
2281 | } |
2282 | ||
2283 | OP * | |
864dbfa3 | 2284 | Perl_newOP(pTHX_ I32 type, I32 flags) |
79072805 | 2285 | { |
27da23d5 | 2286 | dVAR; |
11343788 | 2287 | OP *o; |
b7dc083c | 2288 | NewOp(1101, o, 1, OP); |
eb160463 | 2289 | o->op_type = (OPCODE)type; |
22c35a8c | 2290 | o->op_ppaddr = PL_ppaddr[type]; |
eb160463 | 2291 | o->op_flags = (U8)flags; |
79072805 | 2292 | |
11343788 | 2293 | o->op_next = o; |
eb160463 | 2294 | o->op_private = (U8)(0 | (flags >> 8)); |
22c35a8c | 2295 | if (PL_opargs[type] & OA_RETSCALAR) |
11343788 | 2296 | scalar(o); |
22c35a8c | 2297 | if (PL_opargs[type] & OA_TARGET) |
11343788 MB |
2298 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
2299 | return CHECKOP(type, o); | |
79072805 LW |
2300 | } |
2301 | ||
2302 | OP * | |
864dbfa3 | 2303 | Perl_newUNOP(pTHX_ I32 type, I32 flags, OP *first) |
79072805 | 2304 | { |
27da23d5 | 2305 | dVAR; |
79072805 LW |
2306 | UNOP *unop; |
2307 | ||
93a17b20 | 2308 | if (!first) |
aeea060c | 2309 | first = newOP(OP_STUB, 0); |
22c35a8c | 2310 | if (PL_opargs[type] & OA_MARK) |
8990e307 | 2311 | first = force_list(first); |
93a17b20 | 2312 | |
b7dc083c | 2313 | NewOp(1101, unop, 1, UNOP); |
eb160463 | 2314 | unop->op_type = (OPCODE)type; |
22c35a8c | 2315 | unop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2316 | unop->op_first = first; |
2317 | unop->op_flags = flags | OPf_KIDS; | |
eb160463 | 2318 | unop->op_private = (U8)(1 | (flags >> 8)); |
e50aee73 | 2319 | unop = (UNOP*) CHECKOP(type, unop); |
79072805 LW |
2320 | if (unop->op_next) |
2321 | return (OP*)unop; | |
2322 | ||
a0d0e21e | 2323 | return fold_constants((OP *) unop); |
79072805 LW |
2324 | } |
2325 | ||
2326 | OP * | |
864dbfa3 | 2327 | Perl_newBINOP(pTHX_ I32 type, I32 flags, OP *first, OP *last) |
79072805 | 2328 | { |
27da23d5 | 2329 | dVAR; |
79072805 | 2330 | BINOP *binop; |
b7dc083c | 2331 | NewOp(1101, binop, 1, BINOP); |
79072805 LW |
2332 | |
2333 | if (!first) | |
2334 | first = newOP(OP_NULL, 0); | |
2335 | ||
eb160463 | 2336 | binop->op_type = (OPCODE)type; |
22c35a8c | 2337 | binop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2338 | binop->op_first = first; |
2339 | binop->op_flags = flags | OPf_KIDS; | |
2340 | if (!last) { | |
2341 | last = first; | |
eb160463 | 2342 | binop->op_private = (U8)(1 | (flags >> 8)); |
79072805 LW |
2343 | } |
2344 | else { | |
eb160463 | 2345 | binop->op_private = (U8)(2 | (flags >> 8)); |
79072805 LW |
2346 | first->op_sibling = last; |
2347 | } | |
2348 | ||
e50aee73 | 2349 | binop = (BINOP*)CHECKOP(type, binop); |
eb160463 | 2350 | if (binop->op_next || binop->op_type != (OPCODE)type) |
79072805 LW |
2351 | return (OP*)binop; |
2352 | ||
7284ab6f | 2353 | binop->op_last = binop->op_first->op_sibling; |
79072805 | 2354 | |
a0d0e21e | 2355 | return fold_constants((OP *)binop); |
79072805 LW |
2356 | } |
2357 | ||
abb2c242 JH |
2358 | static int uvcompare(const void *a, const void *b) __attribute__nonnull__(1) __attribute__nonnull__(2) __attribute__pure__; |
2359 | static int uvcompare(const void *a, const void *b) | |
2b9d42f0 | 2360 | { |
e1ec3a88 | 2361 | if (*((const UV *)a) < (*(const UV *)b)) |
2b9d42f0 | 2362 | return -1; |
e1ec3a88 | 2363 | if (*((const UV *)a) > (*(const UV *)b)) |
2b9d42f0 | 2364 | return 1; |
e1ec3a88 | 2365 | if (*((const UV *)a+1) < (*(const UV *)b+1)) |
2b9d42f0 | 2366 | return -1; |
e1ec3a88 | 2367 | if (*((const UV *)a+1) > (*(const UV *)b+1)) |
2b9d42f0 | 2368 | return 1; |
a0ed51b3 LW |
2369 | return 0; |
2370 | } | |
2371 | ||
79072805 | 2372 | OP * |
864dbfa3 | 2373 | Perl_pmtrans(pTHX_ OP *o, OP *expr, OP *repl) |
79072805 | 2374 | { |
79072805 LW |
2375 | SV *tstr = ((SVOP*)expr)->op_sv; |
2376 | SV *rstr = ((SVOP*)repl)->op_sv; | |
463ee0b2 LW |
2377 | STRLEN tlen; |
2378 | STRLEN rlen; | |
5c144d81 NC |
2379 | const U8 *t = (U8*)SvPV_const(tstr, tlen); |
2380 | const U8 *r = (U8*)SvPV_const(rstr, rlen); | |
79072805 LW |
2381 | register I32 i; |
2382 | register I32 j; | |
a0ed51b3 | 2383 | I32 del; |
79072805 | 2384 | I32 complement; |
5d06d08e | 2385 | I32 squash; |
9b877dbb | 2386 | I32 grows = 0; |
79072805 LW |
2387 | register short *tbl; |
2388 | ||
800b4dc4 | 2389 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 2390 | complement = o->op_private & OPpTRANS_COMPLEMENT; |
a0ed51b3 | 2391 | del = o->op_private & OPpTRANS_DELETE; |
5d06d08e | 2392 | squash = o->op_private & OPpTRANS_SQUASH; |
1c846c1f | 2393 | |
036b4402 GS |
2394 | if (SvUTF8(tstr)) |
2395 | o->op_private |= OPpTRANS_FROM_UTF; | |
1c846c1f NIS |
2396 | |
2397 | if (SvUTF8(rstr)) | |
036b4402 | 2398 | o->op_private |= OPpTRANS_TO_UTF; |
79072805 | 2399 | |
a0ed51b3 | 2400 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { |
79cb57f6 | 2401 | SV* listsv = newSVpvn("# comment\n",10); |
a0ed51b3 | 2402 | SV* transv = 0; |
5c144d81 NC |
2403 | const U8* tend = t + tlen; |
2404 | const U8* rend = r + rlen; | |
ba210ebe | 2405 | STRLEN ulen; |
84c133a0 RB |
2406 | UV tfirst = 1; |
2407 | UV tlast = 0; | |
2408 | IV tdiff; | |
2409 | UV rfirst = 1; | |
2410 | UV rlast = 0; | |
2411 | IV rdiff; | |
2412 | IV diff; | |
a0ed51b3 LW |
2413 | I32 none = 0; |
2414 | U32 max = 0; | |
2415 | I32 bits; | |
a0ed51b3 | 2416 | I32 havefinal = 0; |
9c5ffd7c | 2417 | U32 final = 0; |
a0ed51b3 LW |
2418 | I32 from_utf = o->op_private & OPpTRANS_FROM_UTF; |
2419 | I32 to_utf = o->op_private & OPpTRANS_TO_UTF; | |
bf4a1e57 JH |
2420 | U8* tsave = NULL; |
2421 | U8* rsave = NULL; | |
2422 | ||
2423 | if (!from_utf) { | |
2424 | STRLEN len = tlen; | |
5c144d81 | 2425 | t = tsave = bytes_to_utf8(t, &len); |
bf4a1e57 JH |
2426 | tend = t + len; |
2427 | } | |
2428 | if (!to_utf && rlen) { | |
2429 | STRLEN len = rlen; | |
5c144d81 | 2430 | r = rsave = bytes_to_utf8(r, &len); |
bf4a1e57 JH |
2431 | rend = r + len; |
2432 | } | |
a0ed51b3 | 2433 | |
2b9d42f0 NIS |
2434 | /* There are several snags with this code on EBCDIC: |
2435 | 1. 0xFF is a legal UTF-EBCDIC byte (there are no illegal bytes). | |
2436 | 2. scan_const() in toke.c has encoded chars in native encoding which makes | |
2437 | ranges at least in EBCDIC 0..255 range the bottom odd. | |
2438 | */ | |
2439 | ||
a0ed51b3 | 2440 | if (complement) { |
89ebb4a3 | 2441 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
2b9d42f0 | 2442 | UV *cp; |
a0ed51b3 | 2443 | UV nextmin = 0; |
2b9d42f0 | 2444 | New(1109, cp, 2*tlen, UV); |
a0ed51b3 | 2445 | i = 0; |
79cb57f6 | 2446 | transv = newSVpvn("",0); |
a0ed51b3 | 2447 | while (t < tend) { |
2b9d42f0 NIS |
2448 | cp[2*i] = utf8n_to_uvuni(t, tend-t, &ulen, 0); |
2449 | t += ulen; | |
2450 | if (t < tend && NATIVE_TO_UTF(*t) == 0xff) { | |
a0ed51b3 | 2451 | t++; |
2b9d42f0 NIS |
2452 | cp[2*i+1] = utf8n_to_uvuni(t, tend-t, &ulen, 0); |
2453 | t += ulen; | |
a0ed51b3 | 2454 | } |
2b9d42f0 NIS |
2455 | else { |
2456 | cp[2*i+1] = cp[2*i]; | |
2457 | } | |
2458 | i++; | |
a0ed51b3 | 2459 | } |
2b9d42f0 | 2460 | qsort(cp, i, 2*sizeof(UV), uvcompare); |
a0ed51b3 | 2461 | for (j = 0; j < i; j++) { |
2b9d42f0 | 2462 | UV val = cp[2*j]; |
a0ed51b3 LW |
2463 | diff = val - nextmin; |
2464 | if (diff > 0) { | |
9041c2e3 | 2465 | t = uvuni_to_utf8(tmpbuf,nextmin); |
dfe13c55 | 2466 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 | 2467 | if (diff > 1) { |
2b9d42f0 | 2468 | U8 range_mark = UTF_TO_NATIVE(0xff); |
9041c2e3 | 2469 | t = uvuni_to_utf8(tmpbuf, val - 1); |
2b9d42f0 | 2470 | sv_catpvn(transv, (char *)&range_mark, 1); |
dfe13c55 | 2471 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 LW |
2472 | } |
2473 | } | |
2b9d42f0 | 2474 | val = cp[2*j+1]; |
a0ed51b3 LW |
2475 | if (val >= nextmin) |
2476 | nextmin = val + 1; | |
2477 | } | |
9041c2e3 | 2478 | t = uvuni_to_utf8(tmpbuf,nextmin); |
dfe13c55 | 2479 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
2b9d42f0 NIS |
2480 | { |
2481 | U8 range_mark = UTF_TO_NATIVE(0xff); | |
2482 | sv_catpvn(transv, (char *)&range_mark, 1); | |
2483 | } | |
b851fbc1 JH |
2484 | t = uvuni_to_utf8_flags(tmpbuf, 0x7fffffff, |
2485 | UNICODE_ALLOW_SUPER); | |
dfe13c55 | 2486 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
93524f2b | 2487 | t = (const U8*)SvPVX_const(transv); |
a0ed51b3 LW |
2488 | tlen = SvCUR(transv); |
2489 | tend = t + tlen; | |
455d824a | 2490 | Safefree(cp); |
a0ed51b3 LW |
2491 | } |
2492 | else if (!rlen && !del) { | |
2493 | r = t; rlen = tlen; rend = tend; | |
4757a243 LW |
2494 | } |
2495 | if (!squash) { | |
05d340b8 | 2496 | if ((!rlen && !del) || t == r || |
12ae5dfc | 2497 | (tlen == rlen && memEQ((char *)t, (char *)r, tlen))) |
01ec43d0 | 2498 | { |
4757a243 | 2499 | o->op_private |= OPpTRANS_IDENTICAL; |
01ec43d0 | 2500 | } |
a0ed51b3 LW |
2501 | } |
2502 | ||
2503 | while (t < tend || tfirst <= tlast) { | |
2504 | /* see if we need more "t" chars */ | |
2505 | if (tfirst > tlast) { | |
9041c2e3 | 2506 | tfirst = (I32)utf8n_to_uvuni(t, tend - t, &ulen, 0); |
a0ed51b3 | 2507 | t += ulen; |
2b9d42f0 | 2508 | if (t < tend && NATIVE_TO_UTF(*t) == 0xff) { /* illegal utf8 val indicates range */ |
ba210ebe | 2509 | t++; |
9041c2e3 | 2510 | tlast = (I32)utf8n_to_uvuni(t, tend - t, &ulen, 0); |
a0ed51b3 LW |
2511 | t += ulen; |
2512 | } | |
2513 | else | |
2514 | tlast = tfirst; | |
2515 | } | |
2516 | ||
2517 | /* now see if we need more "r" chars */ | |
2518 | if (rfirst > rlast) { | |
2519 | if (r < rend) { | |
9041c2e3 | 2520 | rfirst = (I32)utf8n_to_uvuni(r, rend - r, &ulen, 0); |
a0ed51b3 | 2521 | r += ulen; |
2b9d42f0 | 2522 | if (r < rend && NATIVE_TO_UTF(*r) == 0xff) { /* illegal utf8 val indicates range */ |
ba210ebe | 2523 | r++; |
9041c2e3 | 2524 | rlast = (I32)utf8n_to_uvuni(r, rend - r, &ulen, 0); |
a0ed51b3 LW |
2525 | r += ulen; |
2526 | } | |
2527 | else | |
2528 | rlast = rfirst; | |
2529 | } | |
2530 | else { | |
2531 | if (!havefinal++) | |
2532 | final = rlast; | |
2533 | rfirst = rlast = 0xffffffff; | |
2534 | } | |
2535 | } | |
2536 | ||
2537 | /* now see which range will peter our first, if either. */ | |
2538 | tdiff = tlast - tfirst; | |
2539 | rdiff = rlast - rfirst; | |
2540 | ||
2541 | if (tdiff <= rdiff) | |
2542 | diff = tdiff; | |
2543 | else | |
2544 | diff = rdiff; | |
2545 | ||
2546 | if (rfirst == 0xffffffff) { | |
2547 | diff = tdiff; /* oops, pretend rdiff is infinite */ | |
2548 | if (diff > 0) | |
894356b3 GS |
2549 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t%04lx\tXXXX\n", |
2550 | (long)tfirst, (long)tlast); | |
a0ed51b3 | 2551 | else |
894356b3 | 2552 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t\tXXXX\n", (long)tfirst); |
a0ed51b3 LW |
2553 | } |
2554 | else { | |
2555 | if (diff > 0) | |
894356b3 GS |
2556 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t%04lx\t%04lx\n", |
2557 | (long)tfirst, (long)(tfirst + diff), | |
2558 | (long)rfirst); | |
a0ed51b3 | 2559 | else |
894356b3 GS |
2560 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t\t%04lx\n", |
2561 | (long)tfirst, (long)rfirst); | |
a0ed51b3 LW |
2562 | |
2563 | if (rfirst + diff > max) | |
2564 | max = rfirst + diff; | |
9b877dbb | 2565 | if (!grows) |
45005bfb JH |
2566 | grows = (tfirst < rfirst && |
2567 | UNISKIP(tfirst) < UNISKIP(rfirst + diff)); | |
2568 | rfirst += diff + 1; | |
a0ed51b3 LW |
2569 | } |
2570 | tfirst += diff + 1; | |
2571 | } | |
2572 | ||
2573 | none = ++max; | |
2574 | if (del) | |
2575 | del = ++max; | |
2576 | ||
2577 | if (max > 0xffff) | |
2578 | bits = 32; | |
2579 | else if (max > 0xff) | |
2580 | bits = 16; | |
2581 | else | |
2582 | bits = 8; | |
2583 | ||
455d824a | 2584 | Safefree(cPVOPo->op_pv); |
a0ed51b3 LW |
2585 | cSVOPo->op_sv = (SV*)swash_init("utf8", "", listsv, bits, none); |
2586 | SvREFCNT_dec(listsv); | |
2587 | if (transv) | |
2588 | SvREFCNT_dec(transv); | |
2589 | ||
45005bfb | 2590 | if (!del && havefinal && rlen) |
b448e4fe JH |
2591 | (void)hv_store((HV*)SvRV((cSVOPo->op_sv)), "FINAL", 5, |
2592 | newSVuv((UV)final), 0); | |
a0ed51b3 | 2593 | |
9b877dbb | 2594 | if (grows) |
a0ed51b3 LW |
2595 | o->op_private |= OPpTRANS_GROWS; |
2596 | ||
9b877dbb IH |
2597 | if (tsave) |
2598 | Safefree(tsave); | |
2599 | if (rsave) | |
2600 | Safefree(rsave); | |
2601 | ||
a0ed51b3 LW |
2602 | op_free(expr); |
2603 | op_free(repl); | |
2604 | return o; | |
2605 | } | |
2606 | ||
2607 | tbl = (short*)cPVOPo->op_pv; | |
79072805 LW |
2608 | if (complement) { |
2609 | Zero(tbl, 256, short); | |
eb160463 | 2610 | for (i = 0; i < (I32)tlen; i++) |
ec49126f | 2611 | tbl[t[i]] = -1; |
79072805 LW |
2612 | for (i = 0, j = 0; i < 256; i++) { |
2613 | if (!tbl[i]) { | |
eb160463 | 2614 | if (j >= (I32)rlen) { |
a0ed51b3 | 2615 | if (del) |
79072805 LW |
2616 | tbl[i] = -2; |
2617 | else if (rlen) | |
ec49126f | 2618 | tbl[i] = r[j-1]; |
79072805 | 2619 | else |
eb160463 | 2620 | tbl[i] = (short)i; |
79072805 | 2621 | } |
9b877dbb IH |
2622 | else { |
2623 | if (i < 128 && r[j] >= 128) | |
2624 | grows = 1; | |
ec49126f | 2625 | tbl[i] = r[j++]; |
9b877dbb | 2626 | } |
79072805 LW |
2627 | } |
2628 | } | |
05d340b8 JH |
2629 | if (!del) { |
2630 | if (!rlen) { | |
2631 | j = rlen; | |
2632 | if (!squash) | |
2633 | o->op_private |= OPpTRANS_IDENTICAL; | |
2634 | } | |
eb160463 | 2635 | else if (j >= (I32)rlen) |
05d340b8 JH |
2636 | j = rlen - 1; |
2637 | else | |
2638 | cPVOPo->op_pv = (char*)Renew(tbl, 0x101+rlen-j, short); | |
8973db79 | 2639 | tbl[0x100] = rlen - j; |
eb160463 | 2640 | for (i=0; i < (I32)rlen - j; i++) |
8973db79 JH |
2641 | tbl[0x101+i] = r[j+i]; |
2642 | } | |
79072805 LW |
2643 | } |
2644 | else { | |
a0ed51b3 | 2645 | if (!rlen && !del) { |
79072805 | 2646 | r = t; rlen = tlen; |
5d06d08e | 2647 | if (!squash) |
4757a243 | 2648 | o->op_private |= OPpTRANS_IDENTICAL; |
79072805 | 2649 | } |
94bfe852 RGS |
2650 | else if (!squash && rlen == tlen && memEQ((char*)t, (char*)r, tlen)) { |
2651 | o->op_private |= OPpTRANS_IDENTICAL; | |
2652 | } | |
79072805 LW |
2653 | for (i = 0; i < 256; i++) |
2654 | tbl[i] = -1; | |
eb160463 GS |
2655 | for (i = 0, j = 0; i < (I32)tlen; i++,j++) { |
2656 | if (j >= (I32)rlen) { | |
a0ed51b3 | 2657 | if (del) { |
ec49126f | 2658 | if (tbl[t[i]] == -1) |
2659 | tbl[t[i]] = -2; | |
79072805 LW |
2660 | continue; |
2661 | } | |
2662 | --j; | |
2663 | } | |
9b877dbb IH |
2664 | if (tbl[t[i]] == -1) { |
2665 | if (t[i] < 128 && r[j] >= 128) | |
2666 | grows = 1; | |
ec49126f | 2667 | tbl[t[i]] = r[j]; |
9b877dbb | 2668 | } |
79072805 LW |
2669 | } |
2670 | } | |
9b877dbb IH |
2671 | if (grows) |
2672 | o->op_private |= OPpTRANS_GROWS; | |
79072805 LW |
2673 | op_free(expr); |
2674 | op_free(repl); | |
2675 | ||
11343788 | 2676 | return o; |
79072805 LW |
2677 | } |
2678 | ||
2679 | OP * | |
864dbfa3 | 2680 | Perl_newPMOP(pTHX_ I32 type, I32 flags) |
79072805 | 2681 | { |
27da23d5 | 2682 | dVAR; |
79072805 LW |
2683 | PMOP *pmop; |
2684 | ||
b7dc083c | 2685 | NewOp(1101, pmop, 1, PMOP); |
eb160463 | 2686 | pmop->op_type = (OPCODE)type; |
22c35a8c | 2687 | pmop->op_ppaddr = PL_ppaddr[type]; |
eb160463 GS |
2688 | pmop->op_flags = (U8)flags; |
2689 | pmop->op_private = (U8)(0 | (flags >> 8)); | |
79072805 | 2690 | |
3280af22 | 2691 | if (PL_hints & HINT_RE_TAINT) |
b3eb6a9b | 2692 | pmop->op_pmpermflags |= PMf_RETAINT; |
3280af22 | 2693 | if (PL_hints & HINT_LOCALE) |
b3eb6a9b GS |
2694 | pmop->op_pmpermflags |= PMf_LOCALE; |
2695 | pmop->op_pmflags = pmop->op_pmpermflags; | |
36477c24 | 2696 | |
debc9467 | 2697 | #ifdef USE_ITHREADS |
13137afc AB |
2698 | { |
2699 | SV* repointer; | |
2700 | if(av_len((AV*) PL_regex_pad[0]) > -1) { | |
2701 | repointer = av_pop((AV*)PL_regex_pad[0]); | |
2702 | pmop->op_pmoffset = SvIV(repointer); | |
1cc8b4c5 | 2703 | SvREPADTMP_off(repointer); |
13137afc | 2704 | sv_setiv(repointer,0); |
1eb1540c | 2705 | } else { |
13137afc AB |
2706 | repointer = newSViv(0); |
2707 | av_push(PL_regex_padav,SvREFCNT_inc(repointer)); | |
2708 | pmop->op_pmoffset = av_len(PL_regex_padav); | |
2709 | PL_regex_pad = AvARRAY(PL_regex_padav); | |
1fcf4c12 | 2710 | } |
13137afc | 2711 | } |
debc9467 | 2712 | #endif |
1eb1540c | 2713 | |
1fcf4c12 | 2714 | /* link into pm list */ |
3280af22 | 2715 | if (type != OP_TRANS && PL_curstash) { |
8d2f4536 NC |
2716 | MAGIC *mg = mg_find((SV*)PL_curstash, PERL_MAGIC_symtab); |
2717 | ||
2718 | if (!mg) { | |
2719 | mg = sv_magicext((SV*)PL_curstash, 0, PERL_MAGIC_symtab, 0, 0, 0); | |
2720 | } | |
2721 | pmop->op_pmnext = (PMOP*)mg->mg_obj; | |
2722 | mg->mg_obj = (SV*)pmop; | |
cb55de95 | 2723 | PmopSTASH_set(pmop,PL_curstash); |
79072805 LW |
2724 | } |
2725 | ||
463d09e6 | 2726 | return CHECKOP(type, pmop); |
79072805 LW |
2727 | } |
2728 | ||
131b3ad0 DM |
2729 | /* Given some sort of match op o, and an expression expr containing a |
2730 | * pattern, either compile expr into a regex and attach it to o (if it's | |
2731 | * constant), or convert expr into a runtime regcomp op sequence (if it's | |
2732 | * not) | |
2733 | * | |
2734 | * isreg indicates that the pattern is part of a regex construct, eg | |
2735 | * $x =~ /pattern/ or split /pattern/, as opposed to $x =~ $pattern or | |
2736 | * split "pattern", which aren't. In the former case, expr will be a list | |
2737 | * if the pattern contains more than one term (eg /a$b/) or if it contains | |
2738 | * a replacement, ie s/// or tr///. | |
2739 | */ | |
2740 | ||
79072805 | 2741 | OP * |
131b3ad0 | 2742 | Perl_pmruntime(pTHX_ OP *o, OP *expr, bool isreg) |
79072805 | 2743 | { |
27da23d5 | 2744 | dVAR; |
79072805 LW |
2745 | PMOP *pm; |
2746 | LOGOP *rcop; | |
ce862d02 | 2747 | I32 repl_has_vars = 0; |
131b3ad0 DM |
2748 | OP* repl = Nullop; |
2749 | bool reglist; | |
2750 | ||
2751 | if (o->op_type == OP_SUBST || o->op_type == OP_TRANS) { | |
2752 | /* last element in list is the replacement; pop it */ | |
2753 | OP* kid; | |
2754 | repl = cLISTOPx(expr)->op_last; | |
2755 | kid = cLISTOPx(expr)->op_first; | |
2756 | while (kid->op_sibling != repl) | |
2757 | kid = kid->op_sibling; | |
2758 | kid->op_sibling = Nullop; | |
2759 | cLISTOPx(expr)->op_last = kid; | |
2760 | } | |
79072805 | 2761 | |
131b3ad0 DM |
2762 | if (isreg && expr->op_type == OP_LIST && |
2763 | cLISTOPx(expr)->op_first->op_sibling == cLISTOPx(expr)->op_last) | |
2764 | { | |
2765 | /* convert single element list to element */ | |
2766 | OP* oe = expr; | |
2767 | expr = cLISTOPx(oe)->op_first->op_sibling; | |
2768 | cLISTOPx(oe)->op_first->op_sibling = Nullop; | |
2769 | cLISTOPx(oe)->op_last = Nullop; | |
2770 | op_free(oe); | |
2771 | } | |
2772 | ||
2773 | if (o->op_type == OP_TRANS) { | |
11343788 | 2774 | return pmtrans(o, expr, repl); |
131b3ad0 DM |
2775 | } |
2776 | ||
2777 | reglist = isreg && expr->op_type == OP_LIST; | |
2778 | if (reglist) | |
2779 | op_null(expr); | |
79072805 | 2780 | |
3280af22 | 2781 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 2782 | pm = (PMOP*)o; |
79072805 LW |
2783 | |
2784 | if (expr->op_type == OP_CONST) { | |
463ee0b2 | 2785 | STRLEN plen; |
79072805 | 2786 | SV *pat = ((SVOP*)expr)->op_sv; |
5c144d81 | 2787 | const char *p = SvPV_const(pat, plen); |
770526c1 | 2788 | if ((o->op_flags & OPf_SPECIAL) && (*p == ' ' && p[1] == '\0')) { |
5c144d81 NC |
2789 | U32 was_readonly = SvREADONLY(pat); |
2790 | ||
2791 | if (was_readonly) { | |
2792 | if (SvFAKE(pat)) { | |
2793 | sv_force_normal_flags(pat, 0); | |
2794 | assert(!SvREADONLY(pat)); | |
2795 | was_readonly = 0; | |
2796 | } else { | |
2797 | SvREADONLY_off(pat); | |
2798 | } | |
2799 | } | |
2800 | ||
93a17b20 | 2801 | sv_setpvn(pat, "\\s+", 3); |
5c144d81 NC |
2802 | |
2803 | SvFLAGS(pat) |= was_readonly; | |
2804 | ||
2805 | p = SvPV_const(pat, plen); | |
79072805 LW |
2806 | pm->op_pmflags |= PMf_SKIPWHITE; |
2807 | } | |
5b71a6a7 | 2808 | if (DO_UTF8(pat)) |
a5961de5 | 2809 | pm->op_pmdynflags |= PMdf_UTF8; |
5c144d81 NC |
2810 | /* FIXME - can we make this function take const char * args? */ |
2811 | PM_SETRE(pm, CALLREGCOMP(aTHX_ (char*)p, (char*)p + plen, pm)); | |
aaa362c4 | 2812 | if (strEQ("\\s+", PM_GETRE(pm)->precomp)) |
85e6fe83 | 2813 | pm->op_pmflags |= PMf_WHITE; |
79072805 LW |
2814 | op_free(expr); |
2815 | } | |
2816 | else { | |
3280af22 | 2817 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) |
1c846c1f | 2818 | expr = newUNOP((!(PL_hints & HINT_RE_EVAL) |
2cd61cdb IZ |
2819 | ? OP_REGCRESET |
2820 | : OP_REGCMAYBE),0,expr); | |
463ee0b2 | 2821 | |
b7dc083c | 2822 | NewOp(1101, rcop, 1, LOGOP); |
79072805 | 2823 | rcop->op_type = OP_REGCOMP; |
22c35a8c | 2824 | rcop->op_ppaddr = PL_ppaddr[OP_REGCOMP]; |
79072805 | 2825 | rcop->op_first = scalar(expr); |
131b3ad0 DM |
2826 | rcop->op_flags |= OPf_KIDS |
2827 | | ((PL_hints & HINT_RE_EVAL) ? OPf_SPECIAL : 0) | |
2828 | | (reglist ? OPf_STACKED : 0); | |
79072805 | 2829 | rcop->op_private = 1; |
11343788 | 2830 | rcop->op_other = o; |
131b3ad0 DM |
2831 | if (reglist) |
2832 | rcop->op_targ = pad_alloc(rcop->op_type, SVs_PADTMP); | |
2833 | ||
b5c19bd7 DM |
2834 | /* /$x/ may cause an eval, since $x might be qr/(?{..})/ */ |
2835 | PL_cv_has_eval = 1; | |
79072805 LW |
2836 | |
2837 | /* establish postfix order */ | |
3280af22 | 2838 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) { |
463ee0b2 LW |
2839 | LINKLIST(expr); |
2840 | rcop->op_next = expr; | |
2841 | ((UNOP*)expr)->op_first->op_next = (OP*)rcop; | |
2842 | } | |
2843 | else { | |
2844 | rcop->op_next = LINKLIST(expr); | |
2845 | expr->op_next = (OP*)rcop; | |
2846 | } | |
79072805 | 2847 | |
11343788 | 2848 | prepend_elem(o->op_type, scalar((OP*)rcop), o); |
79072805 LW |
2849 | } |
2850 | ||
2851 | if (repl) { | |
748a9306 | 2852 | OP *curop; |
0244c3a4 | 2853 | if (pm->op_pmflags & PMf_EVAL) { |
748a9306 | 2854 | curop = 0; |
8bafa735 | 2855 | if (CopLINE(PL_curcop) < (line_t)PL_multi_end) |
eb160463 | 2856 | CopLINE_set(PL_curcop, (line_t)PL_multi_end); |
0244c3a4 | 2857 | } |
748a9306 LW |
2858 | else if (repl->op_type == OP_CONST) |
2859 | curop = repl; | |
79072805 | 2860 | else { |
79072805 LW |
2861 | OP *lastop = 0; |
2862 | for (curop = LINKLIST(repl); curop!=repl; curop = LINKLIST(curop)) { | |
22c35a8c | 2863 | if (PL_opargs[curop->op_type] & OA_DANGEROUS) { |
79072805 | 2864 | if (curop->op_type == OP_GV) { |
638eceb6 | 2865 | GV *gv = cGVOPx_gv(curop); |
ce862d02 | 2866 | repl_has_vars = 1; |
f702bf4a | 2867 | if (strchr("&`'123456789+-\016\022", *GvENAME(gv))) |
79072805 LW |
2868 | break; |
2869 | } | |
2870 | else if (curop->op_type == OP_RV2CV) | |
2871 | break; | |
2872 | else if (curop->op_type == OP_RV2SV || | |
2873 | curop->op_type == OP_RV2AV || | |
2874 | curop->op_type == OP_RV2HV || | |
2875 | curop->op_type == OP_RV2GV) { | |
2876 | if (lastop && lastop->op_type != OP_GV) /*funny deref?*/ | |
2877 | break; | |
2878 | } | |
748a9306 LW |
2879 | else if (curop->op_type == OP_PADSV || |
2880 | curop->op_type == OP_PADAV || | |
2881 | curop->op_type == OP_PADHV || | |
554b3eca | 2882 | curop->op_type == OP_PADANY) { |
ce862d02 | 2883 | repl_has_vars = 1; |
748a9306 | 2884 | } |
1167e5da SM |
2885 | else if (curop->op_type == OP_PUSHRE) |
2886 | ; /* Okay here, dangerous in newASSIGNOP */ | |
79072805 LW |
2887 | else |
2888 | break; | |
2889 | } | |
2890 | lastop = curop; | |
2891 | } | |
748a9306 | 2892 | } |
ce862d02 | 2893 | if (curop == repl |
1c846c1f | 2894 | && !(repl_has_vars |
aaa362c4 RS |
2895 | && (!PM_GETRE(pm) |
2896 | || PM_GETRE(pm)->reganch & ROPT_EVAL_SEEN))) { | |
748a9306 | 2897 | pm->op_pmflags |= PMf_CONST; /* const for long enough */ |
4633a7c4 | 2898 | pm->op_pmpermflags |= PMf_CONST; /* const for long enough */ |
11343788 | 2899 | prepend_elem(o->op_type, scalar(repl), o); |
748a9306 LW |
2900 | } |
2901 | else { | |
aaa362c4 | 2902 | if (curop == repl && !PM_GETRE(pm)) { /* Has variables. */ |
ce862d02 IZ |
2903 | pm->op_pmflags |= PMf_MAYBE_CONST; |
2904 | pm->op_pmpermflags |= PMf_MAYBE_CONST; | |
2905 | } | |
b7dc083c | 2906 | NewOp(1101, rcop, 1, LOGOP); |
748a9306 | 2907 | rcop->op_type = OP_SUBSTCONT; |
22c35a8c | 2908 | rcop->op_ppaddr = PL_ppaddr[OP_SUBSTCONT]; |
748a9306 LW |
2909 | rcop->op_first = scalar(repl); |
2910 | rcop->op_flags |= OPf_KIDS; | |
2911 | rcop->op_private = 1; | |
11343788 | 2912 | rcop->op_other = o; |
748a9306 LW |
2913 | |
2914 | /* establish postfix order */ | |
2915 | rcop->op_next = LINKLIST(repl); | |
2916 | repl->op_next = (OP*)rcop; | |
2917 | ||
2918 | pm->op_pmreplroot = scalar((OP*)rcop); | |
2919 | pm->op_pmreplstart = LINKLIST(rcop); | |
2920 | rcop->op_next = 0; | |
79072805 LW |
2921 | } |
2922 | } | |
2923 | ||
2924 | return (OP*)pm; | |
2925 | } | |
2926 | ||
2927 | OP * | |
864dbfa3 | 2928 | Perl_newSVOP(pTHX_ I32 type, I32 flags, SV *sv) |
79072805 | 2929 | { |
27da23d5 | 2930 | dVAR; |
79072805 | 2931 | SVOP *svop; |
b7dc083c | 2932 | NewOp(1101, svop, 1, SVOP); |
eb160463 | 2933 | svop->op_type = (OPCODE)type; |
22c35a8c | 2934 | svop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2935 | svop->op_sv = sv; |
2936 | svop->op_next = (OP*)svop; | |
eb160463 | 2937 | svop->op_flags = (U8)flags; |
22c35a8c | 2938 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 2939 | scalar((OP*)svop); |
22c35a8c | 2940 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 2941 | svop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2942 | return CHECKOP(type, svop); |
79072805 LW |
2943 | } |
2944 | ||
2945 | OP * | |
350de78d GS |
2946 | Perl_newPADOP(pTHX_ I32 type, I32 flags, SV *sv) |
2947 | { | |
27da23d5 | 2948 | dVAR; |
350de78d GS |
2949 | PADOP *padop; |
2950 | NewOp(1101, padop, 1, PADOP); | |
eb160463 | 2951 | padop->op_type = (OPCODE)type; |
350de78d GS |
2952 | padop->op_ppaddr = PL_ppaddr[type]; |
2953 | padop->op_padix = pad_alloc(type, SVs_PADTMP); | |
dd2155a4 DM |
2954 | SvREFCNT_dec(PAD_SVl(padop->op_padix)); |
2955 | PAD_SETSV(padop->op_padix, sv); | |
ce50c033 AMS |
2956 | if (sv) |
2957 | SvPADTMP_on(sv); | |
350de78d | 2958 | padop->op_next = (OP*)padop; |
eb160463 | 2959 | padop->op_flags = (U8)flags; |
350de78d GS |
2960 | if (PL_opargs[type] & OA_RETSCALAR) |
2961 | scalar((OP*)padop); | |
2962 | if (PL_opargs[type] & OA_TARGET) | |
2963 | padop->op_targ = pad_alloc(type, SVs_PADTMP); | |
2964 | return CHECKOP(type, padop); | |
2965 | } | |
2966 | ||
2967 | OP * | |
864dbfa3 | 2968 | Perl_newGVOP(pTHX_ I32 type, I32 flags, GV *gv) |
79072805 | 2969 | { |
27da23d5 | 2970 | dVAR; |
350de78d | 2971 | #ifdef USE_ITHREADS |
ce50c033 AMS |
2972 | if (gv) |
2973 | GvIN_PAD_on(gv); | |
350de78d GS |
2974 | return newPADOP(type, flags, SvREFCNT_inc(gv)); |
2975 | #else | |
7934575e | 2976 | return newSVOP(type, flags, SvREFCNT_inc(gv)); |
350de78d | 2977 | #endif |
79072805 LW |
2978 | } |
2979 | ||
2980 | OP * | |
864dbfa3 | 2981 | Perl_newPVOP(pTHX_ I32 type, I32 flags, char *pv) |
79072805 | 2982 | { |
27da23d5 | 2983 | dVAR; |
79072805 | 2984 | PVOP *pvop; |
b7dc083c | 2985 | NewOp(1101, pvop, 1, PVOP); |
eb160463 | 2986 | pvop->op_type = (OPCODE)type; |
22c35a8c | 2987 | pvop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2988 | pvop->op_pv = pv; |
2989 | pvop->op_next = (OP*)pvop; | |
eb160463 | 2990 | pvop->op_flags = (U8)flags; |
22c35a8c | 2991 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 2992 | scalar((OP*)pvop); |
22c35a8c | 2993 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 2994 | pvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2995 | return CHECKOP(type, pvop); |
79072805 LW |
2996 | } |
2997 | ||
79072805 | 2998 | void |
864dbfa3 | 2999 | Perl_package(pTHX_ OP *o) |
79072805 | 3000 | { |
6867be6d | 3001 | const char *name; |
de11ba31 | 3002 | STRLEN len; |
79072805 | 3003 | |
3280af22 NIS |
3004 | save_hptr(&PL_curstash); |
3005 | save_item(PL_curstname); | |
de11ba31 | 3006 | |
5c144d81 | 3007 | name = SvPV_const(cSVOPo->op_sv, len); |
de11ba31 AMS |
3008 | PL_curstash = gv_stashpvn(name, len, TRUE); |
3009 | sv_setpvn(PL_curstname, name, len); | |
3010 | op_free(o); | |
3011 | ||
7ad382f4 | 3012 | PL_hints |= HINT_BLOCK_SCOPE; |
3280af22 NIS |
3013 | PL_copline = NOLINE; |
3014 | PL_expect = XSTATE; | |
79072805 LW |
3015 | } |
3016 | ||
85e6fe83 | 3017 | void |
88d95a4d | 3018 | Perl_utilize(pTHX_ int aver, I32 floor, OP *version, OP *idop, OP *arg) |
85e6fe83 | 3019 | { |
a0d0e21e | 3020 | OP *pack; |
a0d0e21e | 3021 | OP *imop; |
b1cb66bf | 3022 | OP *veop; |
85e6fe83 | 3023 | |
88d95a4d | 3024 | if (idop->op_type != OP_CONST) |
cea2e8a9 | 3025 | Perl_croak(aTHX_ "Module name must be constant"); |
85e6fe83 | 3026 | |
b1cb66bf | 3027 | veop = Nullop; |
3028 | ||
0f79a09d | 3029 | if (version != Nullop) { |
b1cb66bf | 3030 | SV *vesv = ((SVOP*)version)->op_sv; |
3031 | ||
44dcb63b | 3032 | if (arg == Nullop && !SvNIOKp(vesv)) { |
b1cb66bf | 3033 | arg = version; |
3034 | } | |
3035 | else { | |
3036 | OP *pack; | |
0f79a09d | 3037 | SV *meth; |
b1cb66bf | 3038 | |
44dcb63b | 3039 | if (version->op_type != OP_CONST || !SvNIOKp(vesv)) |
cea2e8a9 | 3040 | Perl_croak(aTHX_ "Version number must be constant number"); |
b1cb66bf | 3041 | |
88d95a4d JH |
3042 | /* Make copy of idop so we don't free it twice */ |
3043 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)idop)->op_sv)); | |
b1cb66bf | 3044 | |
3045 | /* Fake up a method call to VERSION */ | |
427d62a4 | 3046 | meth = newSVpvn_share("VERSION", 7, 0); |
b1cb66bf | 3047 | veop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, |
3048 | append_elem(OP_LIST, | |
0f79a09d GS |
3049 | prepend_elem(OP_LIST, pack, list(version)), |
3050 | newSVOP(OP_METHOD_NAMED, 0, meth))); | |
b1cb66bf | 3051 | } |
3052 | } | |
aeea060c | 3053 | |
a0d0e21e | 3054 | /* Fake up an import/unimport */ |
4633a7c4 LW |
3055 | if (arg && arg->op_type == OP_STUB) |
3056 | imop = arg; /* no import on explicit () */ | |
88d95a4d | 3057 | else if (SvNIOKp(((SVOP*)idop)->op_sv)) { |
b1cb66bf | 3058 | imop = Nullop; /* use 5.0; */ |
3059 | } | |
4633a7c4 | 3060 | else { |
0f79a09d GS |
3061 | SV *meth; |
3062 | ||
88d95a4d JH |
3063 | /* Make copy of idop so we don't free it twice */ |
3064 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)idop)->op_sv)); | |
0f79a09d GS |
3065 | |
3066 | /* Fake up a method call to import/unimport */ | |
427d62a4 NC |
3067 | meth = aver |
3068 | ? newSVpvn_share("import",6, 0) : newSVpvn_share("unimport", 8, 0); | |
4633a7c4 | 3069 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, |
0f79a09d GS |
3070 | append_elem(OP_LIST, |
3071 | prepend_elem(OP_LIST, pack, list(arg)), | |
3072 | newSVOP(OP_METHOD_NAMED, 0, meth))); | |
4633a7c4 LW |
3073 | } |
3074 | ||
a0d0e21e | 3075 | /* Fake up the BEGIN {}, which does its thing immediately. */ |
09bef843 | 3076 | newATTRSUB(floor, |
427d62a4 | 3077 | newSVOP(OP_CONST, 0, newSVpvn_share("BEGIN", 5, 0)), |
4633a7c4 | 3078 | Nullop, |
09bef843 | 3079 | Nullop, |
a0d0e21e | 3080 | append_elem(OP_LINESEQ, |
b1cb66bf | 3081 | append_elem(OP_LINESEQ, |
88d95a4d | 3082 | newSTATEOP(0, Nullch, newUNOP(OP_REQUIRE, 0, idop)), |
b1cb66bf | 3083 | newSTATEOP(0, Nullch, veop)), |
a0d0e21e | 3084 | newSTATEOP(0, Nullch, imop) )); |
85e6fe83 | 3085 | |
70f5e4ed JH |
3086 | /* The "did you use incorrect case?" warning used to be here. |
3087 | * The problem is that on case-insensitive filesystems one | |
3088 | * might get false positives for "use" (and "require"): | |
3089 | * "use Strict" or "require CARP" will work. This causes | |
3090 | * portability problems for the script: in case-strict | |
3091 | * filesystems the script will stop working. | |
3092 | * | |
3093 | * The "incorrect case" warning checked whether "use Foo" | |
3094 | * imported "Foo" to your namespace, but that is wrong, too: | |
3095 | * there is no requirement nor promise in the language that | |
3096 | * a Foo.pm should or would contain anything in package "Foo". | |
3097 | * | |
3098 | * There is very little Configure-wise that can be done, either: | |
3099 | * the case-sensitivity of the build filesystem of Perl does not | |
3100 | * help in guessing the case-sensitivity of the runtime environment. | |
3101 | */ | |
18fc9488 | 3102 | |
c305c6a0 | 3103 | PL_hints |= HINT_BLOCK_SCOPE; |
3280af22 NIS |
3104 | PL_copline = NOLINE; |
3105 | PL_expect = XSTATE; | |
8ec8fbef | 3106 | PL_cop_seqmax++; /* Purely for B::*'s benefit */ |
85e6fe83 LW |
3107 | } |
3108 | ||
7d3fb230 | 3109 | /* |
ccfc67b7 JH |
3110 | =head1 Embedding Functions |
3111 | ||
7d3fb230 BS |
3112 | =for apidoc load_module |
3113 | ||
3114 | Loads the module whose name is pointed to by the string part of name. | |
3115 | Note that the actual module name, not its filename, should be given. | |
3116 | Eg, "Foo::Bar" instead of "Foo/Bar.pm". flags can be any of | |
3117 | PERL_LOADMOD_DENY, PERL_LOADMOD_NOIMPORT, or PERL_LOADMOD_IMPORT_OPS | |
3118 | (or 0 for no flags). ver, if specified, provides version semantics | |
3119 | similar to C<use Foo::Bar VERSION>. The optional trailing SV* | |
3120 | arguments can be used to specify arguments to the module's import() | |
3121 | method, similar to C<use Foo::Bar VERSION LIST>. | |
3122 | ||
3123 | =cut */ | |
3124 | ||
e4783991 GS |
3125 | void |
3126 | Perl_load_module(pTHX_ U32 flags, SV *name, SV *ver, ...) | |
3127 | { | |
3128 | va_list args; | |
3129 | va_start(args, ver); | |
3130 | vload_module(flags, name, ver, &args); | |
3131 | va_end(args); | |
3132 | } | |
3133 | ||
3134 | #ifdef PERL_IMPLICIT_CONTEXT | |
3135 | void | |
3136 | Perl_load_module_nocontext(U32 flags, SV *name, SV *ver, ...) | |
3137 | { | |
3138 | dTHX; | |
3139 | va_list args; | |
3140 | va_start(args, ver); | |
3141 | vload_module(flags, name, ver, &args); | |
3142 | va_end(args); | |
3143 | } | |
3144 | #endif | |
3145 | ||
3146 | void | |
3147 | Perl_vload_module(pTHX_ U32 flags, SV *name, SV *ver, va_list *args) | |
3148 | { | |
3149 | OP *modname, *veop, *imop; | |
3150 | ||
3151 | modname = newSVOP(OP_CONST, 0, name); | |
3152 | modname->op_private |= OPpCONST_BARE; | |
3153 | if (ver) { | |
3154 | veop = newSVOP(OP_CONST, 0, ver); | |
3155 | } | |
3156 | else | |
3157 | veop = Nullop; | |
3158 | if (flags & PERL_LOADMOD_NOIMPORT) { | |
3159 | imop = sawparens(newNULLLIST()); | |
3160 | } | |
3161 | else if (flags & PERL_LOADMOD_IMPORT_OPS) { | |
3162 | imop = va_arg(*args, OP*); | |
3163 | } | |
3164 | else { | |
3165 | SV *sv; | |
3166 | imop = Nullop; | |
3167 | sv = va_arg(*args, SV*); | |
3168 | while (sv) { | |
3169 | imop = append_elem(OP_LIST, imop, newSVOP(OP_CONST, 0, sv)); | |
3170 | sv = va_arg(*args, SV*); | |
3171 | } | |
3172 | } | |
81885997 | 3173 | { |
6867be6d AL |
3174 | const line_t ocopline = PL_copline; |
3175 | COP * const ocurcop = PL_curcop; | |
3176 | const int oexpect = PL_expect; | |
81885997 GS |
3177 | |
3178 | utilize(!(flags & PERL_LOADMOD_DENY), start_subparse(FALSE, 0), | |
3179 | veop, modname, imop); | |
3180 | PL_expect = oexpect; | |
3181 | PL_copline = ocopline; | |
834a3ffa | 3182 | PL_curcop = ocurcop; |
81885997 | 3183 | } |
e4783991 GS |
3184 | } |
3185 | ||
79072805 | 3186 | OP * |
864dbfa3 | 3187 | Perl_dofile(pTHX_ OP *term) |
78ca652e GS |
3188 | { |
3189 | OP *doop; | |
3190 | GV *gv; | |
3191 | ||
3192 | gv = gv_fetchpv("do", FALSE, SVt_PVCV); | |
b9f751c0 | 3193 | if (!(gv && GvCVu(gv) && GvIMPORTED_CV(gv))) |
78ca652e GS |
3194 | gv = gv_fetchpv("CORE::GLOBAL::do", FALSE, SVt_PVCV); |
3195 | ||
b9f751c0 | 3196 | if (gv && GvCVu(gv) && GvIMPORTED_CV(gv)) { |
78ca652e GS |
3197 | doop = ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, |
3198 | append_elem(OP_LIST, term, | |
3199 | scalar(newUNOP(OP_RV2CV, 0, | |
3200 | newGVOP(OP_GV, 0, | |
3201 | gv)))))); | |
3202 | } | |
3203 | else { | |
3204 | doop = newUNOP(OP_DOFILE, 0, scalar(term)); | |
3205 | } | |
3206 | return doop; | |
3207 | } | |
3208 | ||
3209 | OP * | |
864dbfa3 | 3210 | Perl_newSLICEOP(pTHX_ I32 flags, OP *subscript, OP *listval) |
79072805 LW |
3211 | { |
3212 | return newBINOP(OP_LSLICE, flags, | |
8990e307 LW |
3213 | list(force_list(subscript)), |
3214 | list(force_list(listval)) ); | |
79072805 LW |
3215 | } |
3216 | ||
76e3520e | 3217 | STATIC I32 |
504618e9 | 3218 | S_is_list_assignment(pTHX_ register const OP *o) |
79072805 | 3219 | { |
11343788 | 3220 | if (!o) |
79072805 LW |
3221 | return TRUE; |
3222 | ||
11343788 MB |
3223 | if (o->op_type == OP_NULL && o->op_flags & OPf_KIDS) |
3224 | o = cUNOPo->op_first; | |
79072805 | 3225 | |
11343788 | 3226 | if (o->op_type == OP_COND_EXPR) { |
504618e9 AL |
3227 | const I32 t = is_list_assignment(cLOGOPo->op_first->op_sibling); |
3228 | const I32 f = is_list_assignment(cLOGOPo->op_first->op_sibling->op_sibling); | |
79072805 LW |
3229 | |
3230 | if (t && f) | |
3231 | return TRUE; | |
3232 | if (t || f) | |
3233 | yyerror("Assignment to both a list and a scalar"); | |
3234 | return FALSE; | |
3235 | } | |
3236 | ||
95f0a2f1 SB |
3237 | if (o->op_type == OP_LIST && |
3238 | (o->op_flags & OPf_WANT) == OPf_WANT_SCALAR && | |
3239 | o->op_private & OPpLVAL_INTRO) | |
3240 | return FALSE; | |
3241 | ||
11343788 MB |
3242 | if (o->op_type == OP_LIST || o->op_flags & OPf_PARENS || |
3243 | o->op_type == OP_RV2AV || o->op_type == OP_RV2HV || | |
3244 | o->op_type == OP_ASLICE || o->op_type == OP_HSLICE) | |
79072805 LW |
3245 | return TRUE; |
3246 | ||
11343788 | 3247 | if (o->op_type == OP_PADAV || o->op_type == OP_PADHV) |
93a17b20 LW |
3248 | return TRUE; |
3249 | ||
11343788 | 3250 | if (o->op_type == OP_RV2SV) |
79072805 LW |
3251 | return FALSE; |
3252 | ||
3253 | return FALSE; | |
3254 | } | |
3255 | ||
3256 | OP * | |
864dbfa3 | 3257 | Perl_newASSIGNOP(pTHX_ I32 flags, OP *left, I32 optype, OP *right) |
79072805 | 3258 | { |
11343788 | 3259 | OP *o; |
79072805 | 3260 | |
a0d0e21e | 3261 | if (optype) { |
c963b151 | 3262 | if (optype == OP_ANDASSIGN || optype == OP_ORASSIGN || optype == OP_DORASSIGN) { |
a0d0e21e LW |
3263 | return newLOGOP(optype, 0, |
3264 | mod(scalar(left), optype), | |
3265 | newUNOP(OP_SASSIGN, 0, scalar(right))); | |
3266 | } | |
3267 | else { | |
3268 | return newBINOP(optype, OPf_STACKED, | |
3269 | mod(scalar(left), optype), scalar(right)); | |
3270 | } | |
3271 | } | |
3272 | ||
504618e9 | 3273 | if (is_list_assignment(left)) { |
10c8fecd GS |
3274 | OP *curop; |
3275 | ||
3280af22 NIS |
3276 | PL_modcount = 0; |
3277 | PL_eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ | |
463ee0b2 | 3278 | left = mod(left, OP_AASSIGN); |
3280af22 NIS |
3279 | if (PL_eval_start) |
3280 | PL_eval_start = 0; | |
748a9306 | 3281 | else { |
a0d0e21e LW |
3282 | op_free(left); |
3283 | op_free(right); | |
3284 | return Nullop; | |
3285 | } | |
b9d46b39 RGS |
3286 | /* optimise C<my @x = ()> to C<my @x>, and likewise for hashes */ |
3287 | if ((left->op_type == OP_PADAV || left->op_type == OP_PADHV) | |
3288 | && right->op_type == OP_STUB | |
3289 | && (left->op_private & OPpLVAL_INTRO)) | |
3290 | { | |
3291 | op_free(right); | |
9ff53bc9 | 3292 | left->op_flags &= ~(OPf_REF|OPf_SPECIAL); |
b9d46b39 RGS |
3293 | return left; |
3294 | } | |
10c8fecd GS |
3295 | curop = list(force_list(left)); |
3296 | o = newBINOP(OP_AASSIGN, flags, list(force_list(right)), curop); | |
eb160463 | 3297 | o->op_private = (U8)(0 | (flags >> 8)); |
dd2155a4 DM |
3298 | |
3299 | /* PL_generation sorcery: | |
3300 | * an assignment like ($a,$b) = ($c,$d) is easier than | |
3301 | * ($a,$b) = ($c,$a), since there is no need for temporary vars. | |
3302 | * To detect whether there are common vars, the global var | |
3303 | * PL_generation is incremented for each assign op we compile. | |
3304 | * Then, while compiling the assign op, we run through all the | |
3305 | * variables on both sides of the assignment, setting a spare slot | |
3306 | * in each of them to PL_generation. If any of them already have | |
3307 | * that value, we know we've got commonality. We could use a | |
3308 | * single bit marker, but then we'd have to make 2 passes, first | |
3309 | * to clear the flag, then to test and set it. To find somewhere | |
3310 | * to store these values, evil chicanery is done with SvCUR(). | |
3311 | */ | |
3312 | ||
a0d0e21e | 3313 | if (!(left->op_private & OPpLVAL_INTRO)) { |
11343788 | 3314 | OP *lastop = o; |
3280af22 | 3315 | PL_generation++; |
11343788 | 3316 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
22c35a8c | 3317 | if (PL_opargs[curop->op_type] & OA_DANGEROUS) { |
79072805 | 3318 | if (curop->op_type == OP_GV) { |
638eceb6 | 3319 | GV *gv = cGVOPx_gv(curop); |
eb160463 | 3320 | if (gv == PL_defgv || (int)SvCUR(gv) == PL_generation) |
79072805 | 3321 | break; |
b162af07 | 3322 | SvCUR_set(gv, PL_generation); |
79072805 | 3323 | } |
748a9306 LW |
3324 | else if (curop->op_type == OP_PADSV || |
3325 | curop->op_type == OP_PADAV || | |
3326 | curop->op_type == OP_PADHV || | |
dd2155a4 DM |
3327 | curop->op_type == OP_PADANY) |
3328 | { | |
3329 | if (PAD_COMPNAME_GEN(curop->op_targ) | |
92251a1e | 3330 | == (STRLEN)PL_generation) |
748a9306 | 3331 | break; |
b162af07 | 3332 | PAD_COMPNAME_GEN_set(curop->op_targ, PL_generation); |
dd2155a4 | 3333 | |
748a9306 | 3334 | } |
79072805 LW |
3335 | else if (curop->op_type == OP_RV2CV) |
3336 | break; | |
3337 | else if (curop->op_type == OP_RV2SV || | |
3338 | curop->op_type == OP_RV2AV || | |
3339 | curop->op_type == OP_RV2HV || | |
3340 | curop->op_type == OP_RV2GV) { | |
3341 | if (lastop->op_type != OP_GV) /* funny deref? */ | |
3342 | break; | |
3343 | } | |
1167e5da SM |
3344 | else if (curop->op_type == OP_PUSHRE) { |
3345 | if (((PMOP*)curop)->op_pmreplroot) { | |
b3f5893f | 3346 | #ifdef USE_ITHREADS |
dd2155a4 DM |
3347 | GV *gv = (GV*)PAD_SVl(INT2PTR(PADOFFSET, |
3348 | ((PMOP*)curop)->op_pmreplroot)); | |
b3f5893f | 3349 | #else |
1167e5da | 3350 | GV *gv = (GV*)((PMOP*)curop)->op_pmreplroot; |
b3f5893f | 3351 | #endif |
eb160463 | 3352 | if (gv == PL_defgv || (int)SvCUR(gv) == PL_generation) |
1167e5da | 3353 | break; |
b162af07 | 3354 | SvCUR_set(gv, PL_generation); |
b2ffa427 | 3355 | } |
1167e5da | 3356 | } |
79072805 LW |
3357 | else |
3358 | break; | |
3359 | } | |
3360 | lastop = curop; | |
3361 | } | |
11343788 | 3362 | if (curop != o) |
10c8fecd | 3363 | o->op_private |= OPpASSIGN_COMMON; |
79072805 | 3364 | } |
c07a80fd | 3365 | if (right && right->op_type == OP_SPLIT) { |
3366 | OP* tmpop; | |
3367 | if ((tmpop = ((LISTOP*)right)->op_first) && | |
3368 | tmpop->op_type == OP_PUSHRE) | |
3369 | { | |
3370 | PMOP *pm = (PMOP*)tmpop; | |
3371 | if (left->op_type == OP_RV2AV && | |
3372 | !(left->op_private & OPpLVAL_INTRO) && | |
11343788 | 3373 | !(o->op_private & OPpASSIGN_COMMON) ) |
c07a80fd | 3374 | { |
3375 | tmpop = ((UNOP*)left)->op_first; | |
3376 | if (tmpop->op_type == OP_GV && !pm->op_pmreplroot) { | |
971a9dd3 | 3377 | #ifdef USE_ITHREADS |
ba89bb6e | 3378 | pm->op_pmreplroot = INT2PTR(OP*, cPADOPx(tmpop)->op_padix); |
971a9dd3 GS |
3379 | cPADOPx(tmpop)->op_padix = 0; /* steal it */ |
3380 | #else | |
3381 | pm->op_pmreplroot = (OP*)cSVOPx(tmpop)->op_sv; | |
3382 | cSVOPx(tmpop)->op_sv = Nullsv; /* steal it */ | |
3383 | #endif | |
c07a80fd | 3384 | pm->op_pmflags |= PMf_ONCE; |
11343788 | 3385 | tmpop = cUNOPo->op_first; /* to list (nulled) */ |
c07a80fd | 3386 | tmpop = ((UNOP*)tmpop)->op_first; /* to pushmark */ |
3387 | tmpop->op_sibling = Nullop; /* don't free split */ | |
3388 | right->op_next = tmpop->op_next; /* fix starting loc */ | |
11343788 | 3389 | op_free(o); /* blow off assign */ |
54310121 | 3390 | right->op_flags &= ~OPf_WANT; |
a5f75d66 | 3391 | /* "I don't know and I don't care." */ |
c07a80fd | 3392 | return right; |
3393 | } | |
3394 | } | |
3395 | else { | |
e6438c1a | 3396 | if (PL_modcount < RETURN_UNLIMITED_NUMBER && |
c07a80fd | 3397 | ((LISTOP*)right)->op_last->op_type == OP_CONST) |
3398 | { | |
3399 | SV *sv = ((SVOP*)((LISTOP*)right)->op_last)->op_sv; | |
3400 | if (SvIVX(sv) == 0) | |
3280af22 | 3401 | sv_setiv(sv, PL_modcount+1); |
c07a80fd | 3402 | } |
3403 | } | |
3404 | } | |
3405 | } | |
11343788 | 3406 | return o; |
79072805 LW |
3407 | } |
3408 | if (!right) | |
3409 | right = newOP(OP_UNDEF, 0); | |
3410 | if (right->op_type == OP_READLINE) { | |
3411 | right->op_flags |= OPf_STACKED; | |
463ee0b2 | 3412 | return newBINOP(OP_NULL, flags, mod(scalar(left), OP_SASSIGN), scalar(right)); |
79072805 | 3413 | } |
a0d0e21e | 3414 | else { |
3280af22 | 3415 | PL_eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ |
11343788 | 3416 | o = newBINOP(OP_SASSIGN, flags, |
463ee0b2 | 3417 | scalar(right), mod(scalar(left), OP_SASSIGN) ); |
3280af22 NIS |
3418 | if (PL_eval_start) |
3419 | PL_eval_start = 0; | |
748a9306 | 3420 | else { |
11343788 | 3421 | op_free(o); |
a0d0e21e LW |
3422 | return Nullop; |
3423 | } | |
3424 | } | |
11343788 | 3425 | return o; |
79072805 LW |
3426 | } |
3427 | ||
3428 | OP * | |
864dbfa3 | 3429 | Perl_newSTATEOP(pTHX_ I32 flags, char *label, OP *o) |
79072805 | 3430 | { |
27da23d5 | 3431 | dVAR; |
e1ec3a88 | 3432 | const U32 seq = intro_my(); |
79072805 LW |
3433 | register COP *cop; |
3434 | ||
b7dc083c | 3435 | NewOp(1101, cop, 1, COP); |
57843af0 | 3436 | if (PERLDB_LINE && CopLINE(PL_curcop) && PL_curstash != PL_debstash) { |
8990e307 | 3437 | cop->op_type = OP_DBSTATE; |
22c35a8c | 3438 | cop->op_ppaddr = PL_ppaddr[ OP_DBSTATE ]; |
8990e307 LW |
3439 | } |
3440 | else { | |
3441 | cop->op_type = OP_NEXTSTATE; | |
22c35a8c | 3442 | cop->op_ppaddr = PL_ppaddr[ OP_NEXTSTATE ]; |
8990e307 | 3443 | } |
eb160463 GS |
3444 | cop->op_flags = (U8)flags; |
3445 | cop->op_private = (U8)(PL_hints & HINT_PRIVATE_MASK); | |
ff0cee69 | 3446 | #ifdef NATIVE_HINTS |
3447 | cop->op_private |= NATIVE_HINTS; | |
3448 | #endif | |
e24b16f9 | 3449 | PL_compiling.op_private = cop->op_private; |
79072805 LW |
3450 | cop->op_next = (OP*)cop; |
3451 | ||
463ee0b2 LW |
3452 | if (label) { |
3453 | cop->cop_label = label; | |
3280af22 | 3454 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 3455 | } |
bbce6d69 | 3456 | cop->cop_seq = seq; |
3280af22 | 3457 | cop->cop_arybase = PL_curcop->cop_arybase; |
0453d815 | 3458 | if (specialWARN(PL_curcop->cop_warnings)) |
599cee73 | 3459 | cop->cop_warnings = PL_curcop->cop_warnings ; |
1c846c1f | 3460 | else |
599cee73 | 3461 | cop->cop_warnings = newSVsv(PL_curcop->cop_warnings) ; |
ac27b0f5 NIS |
3462 | if (specialCopIO(PL_curcop->cop_io)) |
3463 | cop->cop_io = PL_curcop->cop_io; | |
3464 | else | |
3465 | cop->cop_io = newSVsv(PL_curcop->cop_io) ; | |
599cee73 | 3466 | |
79072805 | 3467 | |
3280af22 | 3468 | if (PL_copline == NOLINE) |
57843af0 | 3469 | CopLINE_set(cop, CopLINE(PL_curcop)); |
79072805 | 3470 | else { |
57843af0 | 3471 | CopLINE_set(cop, PL_copline); |
3280af22 | 3472 | PL_copline = NOLINE; |
79072805 | 3473 | } |
57843af0 | 3474 | #ifdef USE_ITHREADS |
f4dd75d9 | 3475 | CopFILE_set(cop, CopFILE(PL_curcop)); /* XXX share in a pvtable? */ |
57843af0 | 3476 | #else |
f4dd75d9 | 3477 | CopFILEGV_set(cop, CopFILEGV(PL_curcop)); |
57843af0 | 3478 | #endif |
11faa288 | 3479 | CopSTASH_set(cop, PL_curstash); |
79072805 | 3480 | |
3280af22 | 3481 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
cc49e20b | 3482 | SV **svp = av_fetch(CopFILEAV(PL_curcop), (I32)CopLINE(cop), FALSE); |
1eb1540c | 3483 | if (svp && *svp != &PL_sv_undef ) { |
0ac0412a | 3484 | (void)SvIOK_on(*svp); |
45977657 | 3485 | SvIV_set(*svp, PTR2IV(cop)); |
1eb1540c | 3486 | } |
93a17b20 LW |
3487 | } |
3488 | ||
722969e2 | 3489 | return prepend_elem(OP_LINESEQ, (OP*)cop, o); |
79072805 LW |
3490 | } |
3491 | ||
bbce6d69 | 3492 | |
79072805 | 3493 | OP * |
864dbfa3 | 3494 | Perl_newLOGOP(pTHX_ I32 type, I32 flags, OP *first, OP *other) |
79072805 | 3495 | { |
27da23d5 | 3496 | dVAR; |
883ffac3 CS |
3497 | return new_logop(type, flags, &first, &other); |
3498 | } | |
3499 | ||
3bd495df | 3500 | STATIC OP * |
cea2e8a9 | 3501 | S_new_logop(pTHX_ I32 type, I32 flags, OP** firstp, OP** otherp) |
883ffac3 | 3502 | { |
27da23d5 | 3503 | dVAR; |
79072805 | 3504 | LOGOP *logop; |
11343788 | 3505 | OP *o; |
883ffac3 CS |
3506 | OP *first = *firstp; |
3507 | OP *other = *otherp; | |
79072805 | 3508 | |
a0d0e21e LW |
3509 | if (type == OP_XOR) /* Not short circuit, but here by precedence. */ |
3510 | return newBINOP(type, flags, scalar(first), scalar(other)); | |
3511 | ||
8990e307 | 3512 | scalarboolean(first); |
79072805 LW |
3513 | /* optimize "!a && b" to "a || b", and "!a || b" to "a && b" */ |
3514 | if (first->op_type == OP_NOT && (first->op_flags & OPf_SPECIAL)) { | |
3515 | if (type == OP_AND || type == OP_OR) { | |
3516 | if (type == OP_AND) | |
3517 | type = OP_OR; | |
3518 | else | |
3519 | type = OP_AND; | |
11343788 | 3520 | o = first; |
883ffac3 | 3521 | first = *firstp = cUNOPo->op_first; |
11343788 MB |
3522 | if (o->op_next) |
3523 | first->op_next = o->op_next; | |
3524 | cUNOPo->op_first = Nullop; | |
3525 | op_free(o); | |
79072805 LW |
3526 | } |
3527 | } | |
3528 | if (first->op_type == OP_CONST) { | |
39a440a3 DM |
3529 | if (first->op_private & OPpCONST_STRICT) |
3530 | no_bareword_allowed(first); | |
3531 | else if (ckWARN(WARN_BAREWORD) && (first->op_private & OPpCONST_BARE)) | |
989dfb19 | 3532 | Perl_warner(aTHX_ packWARN(WARN_BAREWORD), "Bareword found in conditional"); |
75cc09e4 MHM |
3533 | if ((type == OP_AND && SvTRUE(((SVOP*)first)->op_sv)) || |
3534 | (type == OP_OR && !SvTRUE(((SVOP*)first)->op_sv)) || | |
3535 | (type == OP_DOR && !SvOK(((SVOP*)first)->op_sv))) { | |
79072805 | 3536 | op_free(first); |
883ffac3 | 3537 | *firstp = Nullop; |
d6fee5c7 DM |
3538 | if (other->op_type == OP_CONST) |
3539 | other->op_private |= OPpCONST_SHORTCIRCUIT; | |
79072805 LW |
3540 | return other; |
3541 | } | |
3542 | else { | |
7921d0f2 | 3543 | /* check for C<my $x if 0>, or C<my($x,$y) if 0> */ |
6867be6d | 3544 | const OP *o2 = other; |
7921d0f2 DM |
3545 | if ( ! (o2->op_type == OP_LIST |
3546 | && (( o2 = cUNOPx(o2)->op_first)) | |
3547 | && o2->op_type == OP_PUSHMARK | |
3548 | && (( o2 = o2->op_sibling)) ) | |
3549 | ) | |
3550 | o2 = other; | |
3551 | if ((o2->op_type == OP_PADSV || o2->op_type == OP_PADAV | |
3552 | || o2->op_type == OP_PADHV) | |
3553 | && o2->op_private & OPpLVAL_INTRO | |
3554 | && ckWARN(WARN_DEPRECATED)) | |
3555 | { | |
3556 | Perl_warner(aTHX_ packWARN(WARN_DEPRECATED), | |
3557 | "Deprecated use of my() in false conditional"); | |
3558 | } | |
3559 | ||
79072805 | 3560 | op_free(other); |
883ffac3 | 3561 | *otherp = Nullop; |
d6fee5c7 DM |
3562 | if (first->op_type == OP_CONST) |
3563 | first->op_private |= OPpCONST_SHORTCIRCUIT; | |
79072805 LW |
3564 | return first; |
3565 | } | |
3566 | } | |
59e10468 RGS |
3567 | else if (ckWARN(WARN_MISC) && (first->op_flags & OPf_KIDS) && |
3568 | type != OP_DOR) /* [#24076] Don't warn for <FH> err FOO. */ | |
3569 | { | |
6867be6d AL |
3570 | const OP *k1 = ((UNOP*)first)->op_first; |
3571 | const OP *k2 = k1->op_sibling; | |
a6006777 | 3572 | OPCODE warnop = 0; |
3573 | switch (first->op_type) | |
3574 | { | |
3575 | case OP_NULL: | |
3576 | if (k2 && k2->op_type == OP_READLINE | |
3577 | && (k2->op_flags & OPf_STACKED) | |
1c846c1f | 3578 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
72b16652 | 3579 | { |
a6006777 | 3580 | warnop = k2->op_type; |
72b16652 | 3581 | } |
a6006777 | 3582 | break; |
3583 | ||
3584 | case OP_SASSIGN: | |
68dc0745 | 3585 | if (k1->op_type == OP_READDIR |
3586 | || k1->op_type == OP_GLOB | |
72b16652 | 3587 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) |
68dc0745 | 3588 | || k1->op_type == OP_EACH) |
72b16652 GS |
3589 | { |
3590 | warnop = ((k1->op_type == OP_NULL) | |
eb160463 | 3591 | ? (OPCODE)k1->op_targ : k1->op_type); |
72b16652 | 3592 | } |
a6006777 | 3593 | break; |
3594 | } | |
8ebc5c01 | 3595 | if (warnop) { |
6867be6d | 3596 | const line_t oldline = CopLINE(PL_curcop); |
57843af0 | 3597 | CopLINE_set(PL_curcop, PL_copline); |
9014280d | 3598 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
599cee73 | 3599 | "Value of %s%s can be \"0\"; test with defined()", |
22c35a8c | 3600 | PL_op_desc[warnop], |
68dc0745 | 3601 | ((warnop == OP_READLINE || warnop == OP_GLOB) |
3602 | ? " construct" : "() operator")); | |
57843af0 | 3603 | CopLINE_set(PL_curcop, oldline); |
8ebc5c01 | 3604 | } |
a6006777 | 3605 | } |
79072805 LW |
3606 | |
3607 | if (!other) | |
3608 | return first; | |
3609 | ||
c963b151 | 3610 | if (type == OP_ANDASSIGN || type == OP_ORASSIGN || type == OP_DORASSIGN) |
a0d0e21e LW |
3611 | other->op_private |= OPpASSIGN_BACKWARDS; /* other is an OP_SASSIGN */ |
3612 | ||
b7dc083c | 3613 | NewOp(1101, logop, 1, LOGOP); |
79072805 | 3614 | |
eb160463 | 3615 | logop->op_type = (OPCODE)type; |
22c35a8c | 3616 | logop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
3617 | logop->op_first = first; |
3618 | logop->op_flags = flags | OPf_KIDS; | |
3619 | logop->op_other = LINKLIST(other); | |
eb160463 | 3620 | logop->op_private = (U8)(1 | (flags >> 8)); |
79072805 LW |
3621 | |
3622 | /* establish postfix order */ | |
3623 | logop->op_next = LINKLIST(first); | |
3624 | first->op_next = (OP*)logop; | |
3625 | first->op_sibling = other; | |
3626 | ||
463d09e6 RGS |
3627 | CHECKOP(type,logop); |
3628 | ||
11343788 MB |
3629 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
3630 | other->op_next = o; | |
79072805 | 3631 | |
11343788 | 3632 | return o; |
79072805 LW |
3633 | } |
3634 | ||
3635 | OP * | |
864dbfa3 | 3636 | Perl_newCONDOP(pTHX_ I32 flags, OP *first, OP *trueop, OP *falseop) |
79072805 | 3637 | { |
27da23d5 | 3638 | dVAR; |
1a67a97c SM |
3639 | LOGOP *logop; |
3640 | OP *start; | |
11343788 | 3641 | OP *o; |
79072805 | 3642 | |
b1cb66bf | 3643 | if (!falseop) |
3644 | return newLOGOP(OP_AND, 0, first, trueop); | |
3645 | if (!trueop) | |
3646 | return newLOGOP(OP_OR, 0, first, falseop); | |
79072805 | 3647 | |
8990e307 | 3648 | scalarboolean(first); |
79072805 | 3649 | if (first->op_type == OP_CONST) { |
2bc6235c K |
3650 | if (first->op_private & OPpCONST_BARE && |
3651 | first->op_private & OPpCONST_STRICT) { | |
3652 | no_bareword_allowed(first); | |
3653 | } | |
79072805 LW |
3654 | if (SvTRUE(((SVOP*)first)->op_sv)) { |
3655 | op_free(first); | |
b1cb66bf | 3656 | op_free(falseop); |
3657 | return trueop; | |
79072805 LW |
3658 | } |
3659 | else { | |
3660 | op_free(first); | |
b1cb66bf | 3661 | op_free(trueop); |
3662 | return falseop; | |
79072805 LW |
3663 | } |
3664 | } | |
1a67a97c SM |
3665 | NewOp(1101, logop, 1, LOGOP); |
3666 | logop->op_type = OP_COND_EXPR; | |
3667 | logop->op_ppaddr = PL_ppaddr[OP_COND_EXPR]; | |
3668 | logop->op_first = first; | |
3669 | logop->op_flags = flags | OPf_KIDS; | |
eb160463 | 3670 | logop->op_private = (U8)(1 | (flags >> 8)); |
1a67a97c SM |
3671 | logop->op_other = LINKLIST(trueop); |
3672 | logop->op_next = LINKLIST(falseop); | |
79072805 | 3673 | |
463d09e6 RGS |
3674 | CHECKOP(OP_COND_EXPR, /* that's logop->op_type */ |
3675 | logop); | |
79072805 LW |
3676 | |
3677 | /* establish postfix order */ | |
1a67a97c SM |
3678 | start = LINKLIST(first); |
3679 | first->op_next = (OP*)logop; | |
79072805 | 3680 | |
b1cb66bf | 3681 | first->op_sibling = trueop; |
3682 | trueop->op_sibling = falseop; | |
1a67a97c | 3683 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
79072805 | 3684 | |
1a67a97c | 3685 | trueop->op_next = falseop->op_next = o; |
79072805 | 3686 | |
1a67a97c | 3687 | o->op_next = start; |
11343788 | 3688 | return o; |
79072805 LW |
3689 | } |
3690 | ||
3691 | OP * | |
864dbfa3 | 3692 | Perl_newRANGE(pTHX_ I32 flags, OP *left, OP *right) |
79072805 | 3693 | { |
27da23d5 | 3694 | dVAR; |
1a67a97c | 3695 | LOGOP *range; |
79072805 LW |
3696 | OP *flip; |
3697 | OP *flop; | |
1a67a97c | 3698 | OP *leftstart; |
11343788 | 3699 | OP *o; |
79072805 | 3700 | |
1a67a97c | 3701 | NewOp(1101, range, 1, LOGOP); |
79072805 | 3702 | |
1a67a97c SM |
3703 | range->op_type = OP_RANGE; |
3704 | range->op_ppaddr = PL_ppaddr[OP_RANGE]; | |
3705 | range->op_first = left; | |
3706 | range->op_flags = OPf_KIDS; | |
3707 | leftstart = LINKLIST(left); | |
3708 | range->op_other = LINKLIST(right); | |
eb160463 | 3709 | range->op_private = (U8)(1 | (flags >> 8)); |
79072805 LW |
3710 | |
3711 | left->op_sibling = right; | |
3712 | ||
1a67a97c SM |
3713 | range->op_next = (OP*)range; |
3714 | flip = newUNOP(OP_FLIP, flags, (OP*)range); | |
79072805 | 3715 | flop = newUNOP(OP_FLOP, 0, flip); |
11343788 | 3716 | o = newUNOP(OP_NULL, 0, flop); |
79072805 | 3717 | linklist(flop); |
1a67a97c | 3718 | range->op_next = leftstart; |
79072805 LW |
3719 | |
3720 | left->op_next = flip; | |
3721 | right->op_next = flop; | |
3722 | ||
1a67a97c SM |
3723 | range->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
3724 | sv_upgrade(PAD_SV(range->op_targ), SVt_PVNV); | |
ed6116ce | 3725 | flip->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 LW |
3726 | sv_upgrade(PAD_SV(flip->op_targ), SVt_PVNV); |
3727 | ||
3728 | flip->op_private = left->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
3729 | flop->op_private = right->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
3730 | ||
11343788 | 3731 | flip->op_next = o; |
79072805 | 3732 | if (!flip->op_private || !flop->op_private) |
11343788 | 3733 | linklist(o); /* blow off optimizer unless constant */ |
79072805 | 3734 | |
11343788 | 3735 | return o; |
79072805 LW |
3736 | } |
3737 | ||
3738 | OP * | |
864dbfa3 | 3739 | Perl_newLOOPOP(pTHX_ I32 flags, I32 debuggable, OP *expr, OP *block) |
79072805 | 3740 | { |
463ee0b2 | 3741 | OP* listop; |
11343788 | 3742 | OP* o; |
73d840c0 | 3743 | const bool once = block && block->op_flags & OPf_SPECIAL && |
a0d0e21e | 3744 | (block->op_type == OP_ENTERSUB || block->op_type == OP_NULL); |
73d840c0 | 3745 | (void)debuggable; |
93a17b20 | 3746 | |
463ee0b2 LW |
3747 | if (expr) { |
3748 | if (once && expr->op_type == OP_CONST && !SvTRUE(((SVOP*)expr)->op_sv)) | |
3749 | return block; /* do {} while 0 does once */ | |
fb73857a | 3750 | if (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB |
3751 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB)) { | |
774d564b | 3752 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 3753 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 | 3754 | } else if (expr->op_flags & OPf_KIDS) { |
73d840c0 AL |
3755 | const OP *k1 = ((UNOP*)expr)->op_first; |
3756 | const OP *k2 = (k1) ? k1->op_sibling : NULL; | |
55d729e4 | 3757 | switch (expr->op_type) { |
1c846c1f | 3758 | case OP_NULL: |
55d729e4 GS |
3759 | if (k2 && k2->op_type == OP_READLINE |
3760 | && (k2->op_flags & OPf_STACKED) | |
1c846c1f | 3761 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
55d729e4 | 3762 | expr = newUNOP(OP_DEFINED, 0, expr); |
1c846c1f | 3763 | break; |
55d729e4 GS |
3764 | |
3765 | case OP_SASSIGN: | |
3766 | if (k1->op_type == OP_READDIR | |
3767 | || k1->op_type == OP_GLOB | |
6531c3e6 | 3768 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) |
55d729e4 GS |
3769 | || k1->op_type == OP_EACH) |
3770 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3771 | break; | |
3772 | } | |
774d564b | 3773 | } |
463ee0b2 | 3774 | } |
93a17b20 | 3775 | |
e1548254 RGS |
3776 | /* if block is null, the next append_elem() would put UNSTACK, a scalar |
3777 | * op, in listop. This is wrong. [perl #27024] */ | |
3778 | if (!block) | |
3779 | block = newOP(OP_NULL, 0); | |
8990e307 | 3780 | listop = append_elem(OP_LINESEQ, block, newOP(OP_UNSTACK, 0)); |
883ffac3 | 3781 | o = new_logop(OP_AND, 0, &expr, &listop); |
463ee0b2 | 3782 | |
883ffac3 CS |
3783 | if (listop) |
3784 | ((LISTOP*)listop)->op_last->op_next = LINKLIST(o); | |
79072805 | 3785 | |
11343788 MB |
3786 | if (once && o != listop) |
3787 | o->op_next = ((LOGOP*)cUNOPo->op_first)->op_other; | |
79072805 | 3788 | |
11343788 MB |
3789 | if (o == listop) |
3790 | o = newUNOP(OP_NULL, 0, o); /* or do {} while 1 loses outer block */ | |
748a9306 | 3791 | |
11343788 MB |
3792 | o->op_flags |= flags; |
3793 | o = scope(o); | |
3794 | o->op_flags |= OPf_SPECIAL; /* suppress POPBLOCK curpm restoration*/ | |
3795 | return o; | |
79072805 LW |
3796 | } |
3797 | ||
3798 | OP * | |
a034e688 DM |
3799 | Perl_newWHILEOP(pTHX_ I32 flags, I32 debuggable, LOOP *loop, I32 |
3800 | whileline, OP *expr, OP *block, OP *cont, I32 has_my) | |
79072805 | 3801 | { |
27da23d5 | 3802 | dVAR; |
79072805 LW |
3803 | OP *redo; |
3804 | OP *next = 0; | |
3805 | OP *listop; | |
11343788 | 3806 | OP *o; |
1ba6ee2b | 3807 | U8 loopflags = 0; |
73d840c0 | 3808 | (void)debuggable; |
79072805 | 3809 | |
fb73857a | 3810 | if (expr && (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB |
3811 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB))) { | |
748a9306 | 3812 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 3813 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 | 3814 | } else if (expr && (expr->op_flags & OPf_KIDS)) { |
e1ec3a88 AL |
3815 | const OP *k1 = ((UNOP*)expr)->op_first; |
3816 | const OP *k2 = (k1) ? k1->op_sibling : NULL; | |
55d729e4 | 3817 | switch (expr->op_type) { |
1c846c1f | 3818 | case OP_NULL: |
55d729e4 GS |
3819 | if (k2 && k2->op_type == OP_READLINE |
3820 | && (k2->op_flags & OPf_STACKED) | |
1c846c1f | 3821 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
55d729e4 | 3822 | expr = newUNOP(OP_DEFINED, 0, expr); |
1c846c1f | 3823 | break; |
55d729e4 GS |
3824 | |
3825 | case OP_SASSIGN: | |
3826 | if (k1->op_type == OP_READDIR | |
3827 | || k1->op_type == OP_GLOB | |
72b16652 | 3828 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) |
55d729e4 GS |
3829 | || k1->op_type == OP_EACH) |
3830 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3831 | break; | |
3832 | } | |
748a9306 | 3833 | } |
79072805 LW |
3834 | |
3835 | if (!block) | |
3836 | block = newOP(OP_NULL, 0); | |
a034e688 | 3837 | else if (cont || has_my) { |
87246558 GS |
3838 | block = scope(block); |
3839 | } | |
79072805 | 3840 | |
1ba6ee2b | 3841 | if (cont) { |
79072805 | 3842 | next = LINKLIST(cont); |
1ba6ee2b | 3843 | } |
fb73857a | 3844 | if (expr) { |
85538317 GS |
3845 | OP *unstack = newOP(OP_UNSTACK, 0); |
3846 | if (!next) | |
3847 | next = unstack; | |
3848 | cont = append_elem(OP_LINESEQ, cont, unstack); | |
fb73857a | 3849 | } |
79072805 | 3850 | |
463ee0b2 | 3851 | listop = append_list(OP_LINESEQ, (LISTOP*)block, (LISTOP*)cont); |
79072805 LW |
3852 | redo = LINKLIST(listop); |
3853 | ||
3854 | if (expr) { | |
eb160463 | 3855 | PL_copline = (line_t)whileline; |
883ffac3 CS |
3856 | scalar(listop); |
3857 | o = new_logop(OP_AND, 0, &expr, &listop); | |
11343788 | 3858 | if (o == expr && o->op_type == OP_CONST && !SvTRUE(cSVOPo->op_sv)) { |
85e6fe83 | 3859 | op_free(expr); /* oops, it's a while (0) */ |
463ee0b2 | 3860 | op_free((OP*)loop); |
883ffac3 | 3861 | return Nullop; /* listop already freed by new_logop */ |
463ee0b2 | 3862 | } |
883ffac3 | 3863 | if (listop) |
497b47a8 | 3864 | ((LISTOP*)listop)->op_last->op_next = |
883ffac3 | 3865 | (o == listop ? redo : LINKLIST(o)); |
79072805 LW |
3866 | } |
3867 | else | |
11343788 | 3868 | o = listop; |
79072805 LW |
3869 | |
3870 | if (!loop) { | |
b7dc083c | 3871 | NewOp(1101,loop,1,LOOP); |
79072805 | 3872 | loop->op_type = OP_ENTERLOOP; |
22c35a8c | 3873 | loop->op_ppaddr = PL_ppaddr[OP_ENTERLOOP]; |
79072805 LW |
3874 | loop->op_private = 0; |
3875 | loop->op_next = (OP*)loop; | |
3876 | } | |
3877 | ||
11343788 | 3878 | o = newBINOP(OP_LEAVELOOP, 0, (OP*)loop, o); |
79072805 LW |
3879 | |
3880 | loop->op_redoop = redo; | |
11343788 | 3881 | loop->op_lastop = o; |
1ba6ee2b | 3882 | o->op_private |= loopflags; |
79072805 LW |
3883 | |
3884 | if (next) | |
3885 | loop->op_nextop = next; | |
3886 | else | |
11343788 | 3887 | loop->op_nextop = o; |
79072805 | 3888 | |
11343788 MB |
3889 | o->op_flags |= flags; |
3890 | o->op_private |= (flags >> 8); | |
3891 | return o; | |
79072805 LW |
3892 | } |
3893 | ||
3894 | OP * | |
66a1b24b | 3895 | Perl_newFOROP(pTHX_ I32 flags, char *label, line_t forline, OP *sv, OP *expr, OP *block, OP *cont) |
79072805 | 3896 | { |
27da23d5 | 3897 | dVAR; |
79072805 | 3898 | LOOP *loop; |
fb73857a | 3899 | OP *wop; |
4bbc6d12 | 3900 | PADOFFSET padoff = 0; |
4633a7c4 | 3901 | I32 iterflags = 0; |
241416b8 | 3902 | I32 iterpflags = 0; |
79072805 | 3903 | |
79072805 | 3904 | if (sv) { |
85e6fe83 | 3905 | if (sv->op_type == OP_RV2SV) { /* symbol table variable */ |
241416b8 | 3906 | iterpflags = sv->op_private & OPpOUR_INTRO; /* for our $x () */ |
748a9306 | 3907 | sv->op_type = OP_RV2GV; |
22c35a8c | 3908 | sv->op_ppaddr = PL_ppaddr[OP_RV2GV]; |
79072805 | 3909 | } |
85e6fe83 | 3910 | else if (sv->op_type == OP_PADSV) { /* private variable */ |
241416b8 | 3911 | iterpflags = sv->op_private & OPpLVAL_INTRO; /* for my $x () */ |
85e6fe83 | 3912 | padoff = sv->op_targ; |
743e66e6 | 3913 | sv->op_targ = 0; |
85e6fe83 LW |
3914 | op_free(sv); |
3915 | sv = Nullop; | |
3916 | } | |
54b9620d MB |
3917 | else if (sv->op_type == OP_THREADSV) { /* per-thread variable */ |
3918 | padoff = sv->op_targ; | |
743e66e6 | 3919 | sv->op_targ = 0; |
54b9620d MB |
3920 | iterflags |= OPf_SPECIAL; |
3921 | op_free(sv); | |
3922 | sv = Nullop; | |
3923 | } | |
79072805 | 3924 | else |
cea2e8a9 | 3925 | Perl_croak(aTHX_ "Can't use %s for loop variable", PL_op_desc[sv->op_type]); |
79072805 LW |
3926 | } |
3927 | else { | |
73d840c0 | 3928 | const I32 offset = pad_findmy("$_"); |
aabe9514 RGS |
3929 | if (offset == NOT_IN_PAD || PAD_COMPNAME_FLAGS(offset) & SVpad_OUR) { |
3930 | sv = newGVOP(OP_GV, 0, PL_defgv); | |
3931 | } | |
3932 | else { | |
3933 | padoff = offset; | |
aabe9514 | 3934 | } |
79072805 | 3935 | } |
5f05dabc | 3936 | if (expr->op_type == OP_RV2AV || expr->op_type == OP_PADAV) { |
89ea2908 | 3937 | expr = mod(force_list(scalar(ref(expr, OP_ITER))), OP_GREPSTART); |
4633a7c4 LW |
3938 | iterflags |= OPf_STACKED; |
3939 | } | |
89ea2908 GA |
3940 | else if (expr->op_type == OP_NULL && |
3941 | (expr->op_flags & OPf_KIDS) && | |
3942 | ((BINOP*)expr)->op_first->op_type == OP_FLOP) | |
3943 | { | |
3944 | /* Basically turn for($x..$y) into the same as for($x,$y), but we | |
3945 | * set the STACKED flag to indicate that these values are to be | |
3946 | * treated as min/max values by 'pp_iterinit'. | |
3947 | */ | |
3948 | UNOP* flip = (UNOP*)((UNOP*)((BINOP*)expr)->op_first)->op_first; | |
1a67a97c | 3949 | LOGOP* range = (LOGOP*) flip->op_first; |
66a1b24b AL |
3950 | OP* const left = range->op_first; |
3951 | OP* const right = left->op_sibling; | |
5152d7c7 | 3952 | LISTOP* listop; |
89ea2908 GA |
3953 | |
3954 | range->op_flags &= ~OPf_KIDS; | |
3955 | range->op_first = Nullop; | |
3956 | ||
5152d7c7 | 3957 | listop = (LISTOP*)newLISTOP(OP_LIST, 0, left, right); |
1a67a97c SM |
3958 | listop->op_first->op_next = range->op_next; |
3959 | left->op_next = range->op_other; | |
5152d7c7 GS |
3960 | right->op_next = (OP*)listop; |
3961 | listop->op_next = listop->op_first; | |
89ea2908 GA |
3962 | |
3963 | op_free(expr); | |
5152d7c7 | 3964 | expr = (OP*)(listop); |
93c66552 | 3965 | op_null(expr); |
89ea2908 GA |
3966 | iterflags |= OPf_STACKED; |
3967 | } | |
3968 | else { | |
3969 | expr = mod(force_list(expr), OP_GREPSTART); | |
3970 | } | |
3971 | ||
4633a7c4 | 3972 | loop = (LOOP*)list(convert(OP_ENTERITER, iterflags, |
89ea2908 | 3973 | append_elem(OP_LIST, expr, scalar(sv)))); |
85e6fe83 | 3974 | assert(!loop->op_next); |
241416b8 | 3975 | /* for my $x () sets OPpLVAL_INTRO; |
14f338dc | 3976 | * for our $x () sets OPpOUR_INTRO */ |
c5661c80 | 3977 | loop->op_private = (U8)iterpflags; |
b7dc083c | 3978 | #ifdef PL_OP_SLAB_ALLOC |
155aba94 GS |
3979 | { |
3980 | LOOP *tmp; | |
3981 | NewOp(1234,tmp,1,LOOP); | |
bd5f3bc4 | 3982 | Copy(loop,tmp,1,LISTOP); |
238a4c30 | 3983 | FreeOp(loop); |
155aba94 GS |
3984 | loop = tmp; |
3985 | } | |
b7dc083c | 3986 | #else |
85e6fe83 | 3987 | Renew(loop, 1, LOOP); |
1c846c1f | 3988 | #endif |
85e6fe83 | 3989 | loop->op_targ = padoff; |
a034e688 | 3990 | wop = newWHILEOP(flags, 1, loop, forline, newOP(OP_ITER, 0), block, cont, 0); |
3280af22 | 3991 | PL_copline = forline; |
fb73857a | 3992 | return newSTATEOP(0, label, wop); |
79072805 LW |
3993 | } |
3994 | ||
8990e307 | 3995 | OP* |
864dbfa3 | 3996 | Perl_newLOOPEX(pTHX_ I32 type, OP *label) |
8990e307 | 3997 | { |
11343788 | 3998 | OP *o; |
2d8e6c8d | 3999 | |
8990e307 | 4000 | if (type != OP_GOTO || label->op_type == OP_CONST) { |
cdaebead MB |
4001 | /* "last()" means "last" */ |
4002 | if (label->op_type == OP_STUB && (label->op_flags & OPf_PARENS)) | |
4003 | o = newOP(type, OPf_SPECIAL); | |
4004 | else { | |
4005 | o = newPVOP(type, 0, savepv(label->op_type == OP_CONST | |
8b6b16e7 | 4006 | ? SvPVx_nolen_const(((SVOP*)label)->op_sv) |
cdaebead MB |
4007 | : "")); |
4008 | } | |
8990e307 LW |
4009 | op_free(label); |
4010 | } | |
4011 | else { | |
e3aba57a RGS |
4012 | /* Check whether it's going to be a goto &function */ |
4013 | if (label->op_type == OP_ENTERSUB | |
4014 | && !(label->op_flags & OPf_STACKED)) | |
a0d0e21e | 4015 | label = newUNOP(OP_REFGEN, 0, mod(label, OP_REFGEN)); |
11343788 | 4016 | o = newUNOP(type, OPf_STACKED, label); |
8990e307 | 4017 | } |
3280af22 | 4018 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 4019 | return o; |
8990e307 LW |
4020 | } |
4021 | ||
7dafbf52 DM |
4022 | /* |
4023 | =for apidoc cv_undef | |
4024 | ||
4025 | Clear out all the active components of a CV. This can happen either | |
4026 | by an explicit C<undef &foo>, or by the reference count going to zero. | |
4027 | In the former case, we keep the CvOUTSIDE pointer, so that any anonymous | |
4028 | children can still follow the full lexical scope chain. | |
4029 | ||
4030 | =cut | |
4031 | */ | |
4032 | ||
79072805 | 4033 | void |
864dbfa3 | 4034 | Perl_cv_undef(pTHX_ CV *cv) |
79072805 | 4035 | { |
27da23d5 | 4036 | dVAR; |
a636914a | 4037 | #ifdef USE_ITHREADS |
35f1c1c7 SB |
4038 | if (CvFILE(cv) && !CvXSUB(cv)) { |
4039 | /* for XSUBs CvFILE point directly to static memory; __FILE__ */ | |
a636914a | 4040 | Safefree(CvFILE(cv)); |
a636914a | 4041 | } |
f3e31eb5 | 4042 | CvFILE(cv) = 0; |
a636914a RH |
4043 | #endif |
4044 | ||
a0d0e21e LW |
4045 | if (!CvXSUB(cv) && CvROOT(cv)) { |
4046 | if (CvDEPTH(cv)) | |
cea2e8a9 | 4047 | Perl_croak(aTHX_ "Can't undef active subroutine"); |
8990e307 | 4048 | ENTER; |
a0d0e21e | 4049 | |
f3548bdc | 4050 | PAD_SAVE_SETNULLPAD(); |
a0d0e21e | 4051 | |
282f25c9 | 4052 | op_free(CvROOT(cv)); |
79072805 | 4053 | CvROOT(cv) = Nullop; |
8f476eee | 4054 | CvSTART(cv) = Nullop; |
8990e307 | 4055 | LEAVE; |
79072805 | 4056 | } |
1d5db326 | 4057 | SvPOK_off((SV*)cv); /* forget prototype */ |
8e07c86e | 4058 | CvGV(cv) = Nullgv; |
a3985cdc DM |
4059 | |
4060 | pad_undef(cv); | |
4061 | ||
7dafbf52 DM |
4062 | /* remove CvOUTSIDE unless this is an undef rather than a free */ |
4063 | if (!SvREFCNT(cv) && CvOUTSIDE(cv)) { | |
4064 | if (!CvWEAKOUTSIDE(cv)) | |
4065 | SvREFCNT_dec(CvOUTSIDE(cv)); | |
4066 | CvOUTSIDE(cv) = Nullcv; | |
4067 | } | |
beab0874 JT |
4068 | if (CvCONST(cv)) { |
4069 | SvREFCNT_dec((SV*)CvXSUBANY(cv).any_ptr); | |
4070 | CvCONST_off(cv); | |
4071 | } | |
50762d59 DM |
4072 | if (CvXSUB(cv)) { |
4073 | CvXSUB(cv) = 0; | |
4074 | } | |
7dafbf52 DM |
4075 | /* delete all flags except WEAKOUTSIDE */ |
4076 | CvFLAGS(cv) &= CVf_WEAKOUTSIDE; | |
79072805 LW |
4077 | } |
4078 | ||
3fe9a6f1 | 4079 | void |
35a4481c | 4080 | Perl_cv_ckproto(pTHX_ const CV *cv, const GV *gv, const char *p) |
3fe9a6f1 | 4081 | { |
b15aece3 | 4082 | if (((!p != !SvPOK(cv)) || (p && strNE(p, SvPVX_const(cv)))) && ckWARN_d(WARN_PROTOTYPE)) { |
46fc3d4c | 4083 | SV* msg = sv_newmortal(); |
3fe9a6f1 | 4084 | SV* name = Nullsv; |
4085 | ||
4086 | if (gv) | |
46fc3d4c | 4087 | gv_efullname3(name = sv_newmortal(), gv, Nullch); |
4088 | sv_setpv(msg, "Prototype mismatch:"); | |
4089 | if (name) | |
894356b3 | 4090 | Perl_sv_catpvf(aTHX_ msg, " sub %"SVf, name); |
3fe9a6f1 | 4091 | if (SvPOK(cv)) |
e1ec3a88 | 4092 | Perl_sv_catpvf(aTHX_ msg, " (%"SVf")", (const SV *)cv); |
ebe643b9 | 4093 | else |
54667de8 | 4094 | Perl_sv_catpv(aTHX_ msg, ": none"); |
46fc3d4c | 4095 | sv_catpv(msg, " vs "); |
4096 | if (p) | |
cea2e8a9 | 4097 | Perl_sv_catpvf(aTHX_ msg, "(%s)", p); |
46fc3d4c | 4098 | else |
4099 | sv_catpv(msg, "none"); | |
9014280d | 4100 | Perl_warner(aTHX_ packWARN(WARN_PROTOTYPE), "%"SVf, msg); |
3fe9a6f1 | 4101 | } |
4102 | } | |
4103 | ||
35f1c1c7 SB |
4104 | static void const_sv_xsub(pTHX_ CV* cv); |
4105 | ||
beab0874 | 4106 | /* |
ccfc67b7 JH |
4107 | |
4108 | =head1 Optree Manipulation Functions | |
4109 | ||
beab0874 JT |
4110 | =for apidoc cv_const_sv |
4111 | ||
4112 | If C<cv> is a constant sub eligible for inlining. returns the constant | |
4113 | value returned by the sub. Otherwise, returns NULL. | |
4114 | ||
4115 | Constant subs can be created with C<newCONSTSUB> or as described in | |
4116 | L<perlsub/"Constant Functions">. | |
4117 | ||
4118 | =cut | |
4119 | */ | |
760ac839 | 4120 | SV * |
864dbfa3 | 4121 | Perl_cv_const_sv(pTHX_ CV *cv) |
760ac839 | 4122 | { |
beab0874 | 4123 | if (!cv || !CvCONST(cv)) |
54310121 | 4124 | return Nullsv; |
beab0874 | 4125 | return (SV*)CvXSUBANY(cv).any_ptr; |
fe5e78ed | 4126 | } |
760ac839 | 4127 | |
b5c19bd7 DM |
4128 | /* op_const_sv: examine an optree to determine whether it's in-lineable. |
4129 | * Can be called in 3 ways: | |
4130 | * | |
4131 | * !cv | |
4132 | * look for a single OP_CONST with attached value: return the value | |
4133 | * | |
4134 | * cv && CvCLONE(cv) && !CvCONST(cv) | |
4135 | * | |
4136 | * examine the clone prototype, and if contains only a single | |
4137 | * OP_CONST referencing a pad const, or a single PADSV referencing | |
4138 | * an outer lexical, return a non-zero value to indicate the CV is | |
4139 | * a candidate for "constizing" at clone time | |
4140 | * | |
4141 | * cv && CvCONST(cv) | |
4142 | * | |
4143 | * We have just cloned an anon prototype that was marked as a const | |
4144 | * candidiate. Try to grab the current value, and in the case of | |
4145 | * PADSV, ignore it if it has multiple references. Return the value. | |
4146 | */ | |
4147 | ||
fe5e78ed | 4148 | SV * |
6867be6d | 4149 | Perl_op_const_sv(pTHX_ const OP *o, CV *cv) |
fe5e78ed GS |
4150 | { |
4151 | SV *sv = Nullsv; | |
4152 | ||
0f79a09d | 4153 | if (!o) |
fe5e78ed | 4154 | return Nullsv; |
1c846c1f NIS |
4155 | |
4156 | if (o->op_type == OP_LINESEQ && cLISTOPo->op_first) | |
fe5e78ed GS |
4157 | o = cLISTOPo->op_first->op_sibling; |
4158 | ||
4159 | for (; o; o = o->op_next) { | |
54310121 | 4160 | OPCODE type = o->op_type; |
fe5e78ed | 4161 | |
1c846c1f | 4162 | if (sv && o->op_next == o) |
fe5e78ed | 4163 | return sv; |
e576b457 JT |
4164 | if (o->op_next != o) { |
4165 | if (type == OP_NEXTSTATE || type == OP_NULL || type == OP_PUSHMARK) | |
4166 | continue; | |
4167 | if (type == OP_DBSTATE) | |
4168 | continue; | |
4169 | } | |
54310121 | 4170 | if (type == OP_LEAVESUB || type == OP_RETURN) |
4171 | break; | |
4172 | if (sv) | |
4173 | return Nullsv; | |
7766f137 | 4174 | if (type == OP_CONST && cSVOPo->op_sv) |
5dc0d613 | 4175 | sv = cSVOPo->op_sv; |
b5c19bd7 | 4176 | else if (cv && type == OP_CONST) { |
dd2155a4 | 4177 | sv = PAD_BASE_SV(CvPADLIST(cv), o->op_targ); |
beab0874 JT |
4178 | if (!sv) |
4179 | return Nullsv; | |
b5c19bd7 DM |
4180 | } |
4181 | else if (cv && type == OP_PADSV) { | |
4182 | if (CvCONST(cv)) { /* newly cloned anon */ | |
4183 | sv = PAD_BASE_SV(CvPADLIST(cv), o->op_targ); | |
4184 | /* the candidate should have 1 ref from this pad and 1 ref | |
4185 | * from the parent */ | |
4186 | if (!sv || SvREFCNT(sv) != 2) | |
4187 | return Nullsv; | |
beab0874 | 4188 | sv = newSVsv(sv); |
b5c19bd7 DM |
4189 | SvREADONLY_on(sv); |
4190 | return sv; | |
4191 | } | |
4192 | else { | |
4193 | if (PAD_COMPNAME_FLAGS(o->op_targ) & SVf_FAKE) | |
4194 | sv = &PL_sv_undef; /* an arbitrary non-null value */ | |
beab0874 | 4195 | } |
760ac839 | 4196 | } |
b5c19bd7 | 4197 | else { |
54310121 | 4198 | return Nullsv; |
b5c19bd7 | 4199 | } |
760ac839 LW |
4200 | } |
4201 | return sv; | |
4202 | } | |
4203 | ||
09bef843 SB |
4204 | void |
4205 | Perl_newMYSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, OP *block) | |
4206 | { | |
73d840c0 | 4207 | (void)floor; |
09bef843 SB |
4208 | if (o) |
4209 | SAVEFREEOP(o); | |
4210 | if (proto) | |
4211 | SAVEFREEOP(proto); | |
4212 | if (attrs) | |
4213 | SAVEFREEOP(attrs); | |
4214 | if (block) | |
4215 | SAVEFREEOP(block); | |
4216 | Perl_croak(aTHX_ "\"my sub\" not yet implemented"); | |
4217 | } | |
4218 | ||
748a9306 | 4219 | CV * |
864dbfa3 | 4220 | Perl_newSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *block) |
79072805 | 4221 | { |
09bef843 SB |
4222 | return Perl_newATTRSUB(aTHX_ floor, o, proto, Nullop, block); |
4223 | } | |
4224 | ||
4225 | CV * | |
4226 | Perl_newATTRSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, OP *block) | |
4227 | { | |
27da23d5 | 4228 | dVAR; |
6867be6d | 4229 | const char *aname; |
83ee9e09 | 4230 | GV *gv; |
5c144d81 | 4231 | const char *ps; |
ea6e9374 | 4232 | STRLEN ps_len; |
a2008d6d | 4233 | register CV *cv=0; |
beab0874 | 4234 | SV *const_sv; |
79072805 | 4235 | |
8b6b16e7 | 4236 | const char * const name = o ? SvPVx_nolen_const(cSVOPo->op_sv) : Nullch; |
8e742a20 MHM |
4237 | |
4238 | if (proto) { | |
4239 | assert(proto->op_type == OP_CONST); | |
5c144d81 | 4240 | ps = SvPVx_const(((SVOP*)proto)->op_sv, ps_len); |
8e742a20 MHM |
4241 | } |
4242 | else | |
4243 | ps = Nullch; | |
4244 | ||
83ee9e09 GS |
4245 | if (!name && PERLDB_NAMEANON && CopLINE(PL_curcop)) { |
4246 | SV *sv = sv_newmortal(); | |
c99da370 JH |
4247 | Perl_sv_setpvf(aTHX_ sv, "%s[%s:%"IVdf"]", |
4248 | PL_curstash ? "__ANON__" : "__ANON__::__ANON__", | |
83ee9e09 | 4249 | CopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); |
b15aece3 | 4250 | aname = SvPVX_const(sv); |
83ee9e09 GS |
4251 | } |
4252 | else | |
4253 | aname = Nullch; | |
7a5fd60d NC |
4254 | gv = name ? gv_fetchsv(cSVOPo->op_sv, |
4255 | GV_ADDMULTI | ((block || attrs) ? 0 : GV_NOINIT), | |
4256 | SVt_PVCV) | |
4257 | : gv_fetchpv(aname ? aname | |
4258 | : (PL_curstash ? "__ANON__" : "__ANON__::__ANON__"), | |
4259 | GV_ADDMULTI | ((block || attrs) ? 0 : GV_NOINIT), | |
4260 | SVt_PVCV); | |
83ee9e09 | 4261 | |
11343788 | 4262 | if (o) |
5dc0d613 | 4263 | SAVEFREEOP(o); |
3fe9a6f1 | 4264 | if (proto) |
4265 | SAVEFREEOP(proto); | |
09bef843 SB |
4266 | if (attrs) |
4267 | SAVEFREEOP(attrs); | |
3fe9a6f1 | 4268 | |
09bef843 | 4269 | if (SvTYPE(gv) != SVt_PVGV) { /* Maybe prototype now, and had at |
55d729e4 GS |
4270 | maximum a prototype before. */ |
4271 | if (SvTYPE(gv) > SVt_NULL) { | |
0453d815 | 4272 | if (!SvPOK((SV*)gv) && !(SvIOK((SV*)gv) && SvIVX((SV*)gv) == -1) |
e476b1b5 | 4273 | && ckWARN_d(WARN_PROTOTYPE)) |
f248d071 | 4274 | { |
9014280d | 4275 | Perl_warner(aTHX_ packWARN(WARN_PROTOTYPE), "Runaway prototype"); |
f248d071 | 4276 | } |
55d729e4 GS |
4277 | cv_ckproto((CV*)gv, NULL, ps); |
4278 | } | |
4279 | if (ps) | |
ea6e9374 | 4280 | sv_setpvn((SV*)gv, ps, ps_len); |
55d729e4 GS |
4281 | else |
4282 | sv_setiv((SV*)gv, -1); | |
3280af22 NIS |
4283 | SvREFCNT_dec(PL_compcv); |
4284 | cv = PL_compcv = NULL; | |
4285 | PL_sub_generation++; | |
beab0874 | 4286 | goto done; |
55d729e4 GS |
4287 | } |
4288 | ||
beab0874 JT |
4289 | cv = (!name || GvCVGEN(gv)) ? Nullcv : GvCV(gv); |
4290 | ||
7fb37951 AMS |
4291 | #ifdef GV_UNIQUE_CHECK |
4292 | if (cv && GvUNIQUE(gv) && SvREADONLY(cv)) { | |
4293 | Perl_croak(aTHX_ "Can't define subroutine %s (GV is unique)", name); | |
5bd07a3d DM |
4294 | } |
4295 | #endif | |
4296 | ||
beab0874 JT |
4297 | if (!block || !ps || *ps || attrs) |
4298 | const_sv = Nullsv; | |
4299 | else | |
4300 | const_sv = op_const_sv(block, Nullcv); | |
4301 | ||
4302 | if (cv) { | |
6867be6d | 4303 | const bool exists = CvROOT(cv) || CvXSUB(cv); |
5bd07a3d | 4304 | |
7fb37951 AMS |
4305 | #ifdef GV_UNIQUE_CHECK |
4306 | if (exists && GvUNIQUE(gv)) { | |
4307 | Perl_croak(aTHX_ "Can't redefine unique subroutine %s", name); | |
5bd07a3d DM |
4308 | } |
4309 | #endif | |
4310 | ||
60ed1d8c GS |
4311 | /* if the subroutine doesn't exist and wasn't pre-declared |
4312 | * with a prototype, assume it will be AUTOLOADed, | |
4313 | * skipping the prototype check | |
4314 | */ | |
4315 | if (exists || SvPOK(cv)) | |
01ec43d0 | 4316 | cv_ckproto(cv, gv, ps); |
68dc0745 | 4317 | /* already defined (or promised)? */ |
60ed1d8c | 4318 | if (exists || GvASSUMECV(gv)) { |
09bef843 | 4319 | if (!block && !attrs) { |
d3cea301 SB |
4320 | if (CvFLAGS(PL_compcv)) { |
4321 | /* might have had built-in attrs applied */ | |
4322 | CvFLAGS(cv) |= (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS); | |
4323 | } | |
aa689395 | 4324 | /* just a "sub foo;" when &foo is already defined */ |
3280af22 | 4325 | SAVEFREESV(PL_compcv); |
aa689395 | 4326 | goto done; |
4327 | } | |
7bac28a0 | 4328 | /* ahem, death to those who redefine active sort subs */ |
3280af22 | 4329 | if (PL_curstackinfo->si_type == PERLSI_SORT && PL_sortcop == CvSTART(cv)) |
cea2e8a9 | 4330 | Perl_croak(aTHX_ "Can't redefine active sort subroutine %s", name); |
beab0874 JT |
4331 | if (block) { |
4332 | if (ckWARN(WARN_REDEFINE) | |
4333 | || (CvCONST(cv) | |
4334 | && (!const_sv || sv_cmp(cv_const_sv(cv), const_sv)))) | |
4335 | { | |
6867be6d | 4336 | const line_t oldline = CopLINE(PL_curcop); |
d8a34499 IK |
4337 | if (PL_copline != NOLINE) |
4338 | CopLINE_set(PL_curcop, PL_copline); | |
9014280d | 4339 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), |
beab0874 JT |
4340 | CvCONST(cv) ? "Constant subroutine %s redefined" |
4341 | : "Subroutine %s redefined", name); | |
4342 | CopLINE_set(PL_curcop, oldline); | |
4343 | } | |
4344 | SvREFCNT_dec(cv); | |
4345 | cv = Nullcv; | |
79072805 | 4346 | } |
79072805 LW |
4347 | } |
4348 | } | |
beab0874 | 4349 | if (const_sv) { |
7fc63493 | 4350 | (void)SvREFCNT_inc(const_sv); |
beab0874 | 4351 | if (cv) { |
0768512c | 4352 | assert(!CvROOT(cv) && !CvCONST(cv)); |
c69006e4 | 4353 | sv_setpvn((SV*)cv, "", 0); /* prototype is "" */ |
beab0874 JT |
4354 | CvXSUBANY(cv).any_ptr = const_sv; |
4355 | CvXSUB(cv) = const_sv_xsub; | |
4356 | CvCONST_on(cv); | |
beab0874 JT |
4357 | } |
4358 | else { | |
4359 | GvCV(gv) = Nullcv; | |
4360 | cv = newCONSTSUB(NULL, name, const_sv); | |
4361 | } | |
4362 | op_free(block); | |
4363 | SvREFCNT_dec(PL_compcv); | |
4364 | PL_compcv = NULL; | |
4365 | PL_sub_generation++; | |
4366 | goto done; | |
4367 | } | |
09bef843 SB |
4368 | if (attrs) { |
4369 | HV *stash; | |
4370 | SV *rcv; | |
4371 | ||
4372 | /* Need to do a C<use attributes $stash_of_cv,\&cv,@attrs> | |
4373 | * before we clobber PL_compcv. | |
4374 | */ | |
4375 | if (cv && !block) { | |
4376 | rcv = (SV*)cv; | |
020f0e03 SB |
4377 | /* Might have had built-in attributes applied -- propagate them. */ |
4378 | CvFLAGS(cv) |= (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS); | |
a9164de8 | 4379 | if (CvGV(cv) && GvSTASH(CvGV(cv))) |
09bef843 | 4380 | stash = GvSTASH(CvGV(cv)); |
a9164de8 | 4381 | else if (CvSTASH(cv)) |
09bef843 SB |
4382 | stash = CvSTASH(cv); |
4383 | else | |
4384 | stash = PL_curstash; | |
4385 | } | |
4386 | else { | |
4387 | /* possibly about to re-define existing subr -- ignore old cv */ | |
4388 | rcv = (SV*)PL_compcv; | |
a9164de8 | 4389 | if (name && GvSTASH(gv)) |
09bef843 SB |
4390 | stash = GvSTASH(gv); |
4391 | else | |
4392 | stash = PL_curstash; | |
4393 | } | |
95f0a2f1 | 4394 | apply_attrs(stash, rcv, attrs, FALSE); |
09bef843 | 4395 | } |
a0d0e21e | 4396 | if (cv) { /* must reuse cv if autoloaded */ |
09bef843 SB |
4397 | if (!block) { |
4398 | /* got here with just attrs -- work done, so bug out */ | |
4399 | SAVEFREESV(PL_compcv); | |
4400 | goto done; | |
4401 | } | |
a3985cdc | 4402 | /* transfer PL_compcv to cv */ |
4633a7c4 | 4403 | cv_undef(cv); |
3280af22 | 4404 | CvFLAGS(cv) = CvFLAGS(PL_compcv); |
5c41a5fa DM |
4405 | if (!CvWEAKOUTSIDE(cv)) |
4406 | SvREFCNT_dec(CvOUTSIDE(cv)); | |
3280af22 | 4407 | CvOUTSIDE(cv) = CvOUTSIDE(PL_compcv); |
a3985cdc | 4408 | CvOUTSIDE_SEQ(cv) = CvOUTSIDE_SEQ(PL_compcv); |
3280af22 NIS |
4409 | CvOUTSIDE(PL_compcv) = 0; |
4410 | CvPADLIST(cv) = CvPADLIST(PL_compcv); | |
4411 | CvPADLIST(PL_compcv) = 0; | |
282f25c9 | 4412 | /* inner references to PL_compcv must be fixed up ... */ |
dd2155a4 | 4413 | pad_fixup_inner_anons(CvPADLIST(cv), PL_compcv, cv); |
282f25c9 | 4414 | /* ... before we throw it away */ |
3280af22 | 4415 | SvREFCNT_dec(PL_compcv); |
b5c19bd7 | 4416 | PL_compcv = cv; |
a933f601 IZ |
4417 | if (PERLDB_INTER)/* Advice debugger on the new sub. */ |
4418 | ++PL_sub_generation; | |
a0d0e21e LW |
4419 | } |
4420 | else { | |
3280af22 | 4421 | cv = PL_compcv; |
44a8e56a | 4422 | if (name) { |
4423 | GvCV(gv) = cv; | |
4424 | GvCVGEN(gv) = 0; | |
3280af22 | 4425 | PL_sub_generation++; |
44a8e56a | 4426 | } |
a0d0e21e | 4427 | } |
65c50114 | 4428 | CvGV(cv) = gv; |
a636914a | 4429 | CvFILE_set_from_cop(cv, PL_curcop); |
3280af22 | 4430 | CvSTASH(cv) = PL_curstash; |
8990e307 | 4431 | |
3fe9a6f1 | 4432 | if (ps) |
ea6e9374 | 4433 | sv_setpvn((SV*)cv, ps, ps_len); |
4633a7c4 | 4434 | |
3280af22 | 4435 | if (PL_error_count) { |
c07a80fd | 4436 | op_free(block); |
4437 | block = Nullop; | |
68dc0745 | 4438 | if (name) { |
6867be6d | 4439 | const char *s = strrchr(name, ':'); |
68dc0745 | 4440 | s = s ? s+1 : name; |
6d4c2119 | 4441 | if (strEQ(s, "BEGIN")) { |
e1ec3a88 | 4442 | const char not_safe[] = |
6d4c2119 | 4443 | "BEGIN not safe after errors--compilation aborted"; |
faef0170 | 4444 | if (PL_in_eval & EVAL_KEEPERR) |
cea2e8a9 | 4445 | Perl_croak(aTHX_ not_safe); |
6d4c2119 CS |
4446 | else { |
4447 | /* force display of errors found but not reported */ | |
38a03e6e | 4448 | sv_catpv(ERRSV, not_safe); |
35c1215d | 4449 | Perl_croak(aTHX_ "%"SVf, ERRSV); |
6d4c2119 CS |
4450 | } |
4451 | } | |
68dc0745 | 4452 | } |
c07a80fd | 4453 | } |
beab0874 JT |
4454 | if (!block) |
4455 | goto done; | |
a0d0e21e | 4456 | |
7766f137 | 4457 | if (CvLVALUE(cv)) { |
78f9721b SM |
4458 | CvROOT(cv) = newUNOP(OP_LEAVESUBLV, 0, |
4459 | mod(scalarseq(block), OP_LEAVESUBLV)); | |
7766f137 GS |
4460 | } |
4461 | else { | |
09c2fd24 AE |
4462 | /* This makes sub {}; work as expected. */ |
4463 | if (block->op_type == OP_STUB) { | |
4464 | op_free(block); | |
4465 | block = newSTATEOP(0, Nullch, 0); | |
4466 | } | |
7766f137 GS |
4467 | CvROOT(cv) = newUNOP(OP_LEAVESUB, 0, scalarseq(block)); |
4468 | } | |
4469 | CvROOT(cv)->op_private |= OPpREFCOUNTED; | |
4470 | OpREFCNT_set(CvROOT(cv), 1); | |
4471 | CvSTART(cv) = LINKLIST(CvROOT(cv)); | |
4472 | CvROOT(cv)->op_next = 0; | |
a2efc822 | 4473 | CALL_PEEP(CvSTART(cv)); |
7766f137 GS |
4474 | |
4475 | /* now that optimizer has done its work, adjust pad values */ | |
54310121 | 4476 | |
dd2155a4 DM |
4477 | pad_tidy(CvCLONE(cv) ? padtidy_SUBCLONE : padtidy_SUB); |
4478 | ||
4479 | if (CvCLONE(cv)) { | |
beab0874 JT |
4480 | assert(!CvCONST(cv)); |
4481 | if (ps && !*ps && op_const_sv(block, cv)) | |
4482 | CvCONST_on(cv); | |
a0d0e21e | 4483 | } |
79072805 | 4484 | |
83ee9e09 | 4485 | if (name || aname) { |
6867be6d AL |
4486 | const char *s; |
4487 | const char *tname = (name ? name : aname); | |
44a8e56a | 4488 | |
3280af22 | 4489 | if (PERLDB_SUBLINE && PL_curstash != PL_debstash) { |
46fc3d4c | 4490 | SV *sv = NEWSV(0,0); |
44a8e56a | 4491 | SV *tmpstr = sv_newmortal(); |
549bb64a | 4492 | GV *db_postponed = gv_fetchpv("DB::postponed", GV_ADDMULTI, SVt_PVHV); |
83ee9e09 | 4493 | CV *pcv; |
44a8e56a | 4494 | HV *hv; |
4495 | ||
ed094faf GS |
4496 | Perl_sv_setpvf(aTHX_ sv, "%s:%ld-%ld", |
4497 | CopFILE(PL_curcop), | |
cc49e20b | 4498 | (long)PL_subline, (long)CopLINE(PL_curcop)); |
44a8e56a | 4499 | gv_efullname3(tmpstr, gv, Nullch); |
b15aece3 | 4500 | hv_store(GvHV(PL_DBsub), SvPVX_const(tmpstr), SvCUR(tmpstr), sv, 0); |
44a8e56a | 4501 | hv = GvHVn(db_postponed); |
b15aece3 | 4502 | if (HvFILL(hv) > 0 && hv_exists(hv, SvPVX_const(tmpstr), SvCUR(tmpstr)) |
83ee9e09 GS |
4503 | && (pcv = GvCV(db_postponed))) |
4504 | { | |
44a8e56a | 4505 | dSP; |
924508f0 | 4506 | PUSHMARK(SP); |
44a8e56a | 4507 | XPUSHs(tmpstr); |
4508 | PUTBACK; | |
83ee9e09 | 4509 | call_sv((SV*)pcv, G_DISCARD); |
44a8e56a | 4510 | } |
4511 | } | |
79072805 | 4512 | |
83ee9e09 | 4513 | if ((s = strrchr(tname,':'))) |
28757baa | 4514 | s++; |
4515 | else | |
83ee9e09 | 4516 | s = tname; |
ed094faf | 4517 | |
7d30b5c4 | 4518 | if (*s != 'B' && *s != 'E' && *s != 'C' && *s != 'I') |
ed094faf GS |
4519 | goto done; |
4520 | ||
7678c486 | 4521 | if (strEQ(s, "BEGIN") && !PL_error_count) { |
6867be6d | 4522 | const I32 oldscope = PL_scopestack_ix; |
28757baa | 4523 | ENTER; |
57843af0 GS |
4524 | SAVECOPFILE(&PL_compiling); |
4525 | SAVECOPLINE(&PL_compiling); | |
28757baa | 4526 | |
3280af22 NIS |
4527 | if (!PL_beginav) |
4528 | PL_beginav = newAV(); | |
28757baa | 4529 | DEBUG_x( dump_sub(gv) ); |
ea2f84a3 GS |
4530 | av_push(PL_beginav, (SV*)cv); |
4531 | GvCV(gv) = 0; /* cv has been hijacked */ | |
3280af22 | 4532 | call_list(oldscope, PL_beginav); |
a6006777 | 4533 | |
3280af22 | 4534 | PL_curcop = &PL_compiling; |
eb160463 | 4535 | PL_compiling.op_private = (U8)(PL_hints & HINT_PRIVATE_MASK); |
28757baa | 4536 | LEAVE; |
4537 | } | |
3280af22 NIS |
4538 | else if (strEQ(s, "END") && !PL_error_count) { |
4539 | if (!PL_endav) | |
4540 | PL_endav = newAV(); | |
ed094faf | 4541 | DEBUG_x( dump_sub(gv) ); |
3280af22 | 4542 | av_unshift(PL_endav, 1); |
ea2f84a3 GS |
4543 | av_store(PL_endav, 0, (SV*)cv); |
4544 | GvCV(gv) = 0; /* cv has been hijacked */ | |
28757baa | 4545 | } |
7d30b5c4 GS |
4546 | else if (strEQ(s, "CHECK") && !PL_error_count) { |
4547 | if (!PL_checkav) | |
4548 | PL_checkav = newAV(); | |
ed094faf | 4549 | DEBUG_x( dump_sub(gv) ); |
ddda08b7 | 4550 | if (PL_main_start && ckWARN(WARN_VOID)) |
9014280d | 4551 | Perl_warner(aTHX_ packWARN(WARN_VOID), "Too late to run CHECK block"); |
7d30b5c4 | 4552 | av_unshift(PL_checkav, 1); |
ea2f84a3 GS |
4553 | av_store(PL_checkav, 0, (SV*)cv); |
4554 | GvCV(gv) = 0; /* cv has been hijacked */ | |
4f25aa18 | 4555 | } |
3280af22 NIS |
4556 | else if (strEQ(s, "INIT") && !PL_error_count) { |
4557 | if (!PL_initav) | |
4558 | PL_initav = newAV(); | |
ed094faf | 4559 | DEBUG_x( dump_sub(gv) ); |
ddda08b7 | 4560 | if (PL_main_start && ckWARN(WARN_VOID)) |
9014280d | 4561 | Perl_warner(aTHX_ packWARN(WARN_VOID), "Too late to run INIT block"); |
ea2f84a3 GS |
4562 | av_push(PL_initav, (SV*)cv); |
4563 | GvCV(gv) = 0; /* cv has been hijacked */ | |
ae77835f | 4564 | } |
79072805 | 4565 | } |
a6006777 | 4566 | |
aa689395 | 4567 | done: |
3280af22 | 4568 | PL_copline = NOLINE; |
8990e307 | 4569 | LEAVE_SCOPE(floor); |
a0d0e21e | 4570 | return cv; |
79072805 LW |
4571 | } |
4572 | ||
b099ddc0 | 4573 | /* XXX unsafe for threads if eval_owner isn't held */ |
954c1994 GS |
4574 | /* |
4575 | =for apidoc newCONSTSUB | |
4576 | ||
4577 | Creates a constant sub equivalent to Perl C<sub FOO () { 123 }> which is | |
4578 | eligible for inlining at compile-time. | |
4579 | ||
4580 | =cut | |
4581 | */ | |
4582 | ||
beab0874 | 4583 | CV * |
e1ec3a88 | 4584 | Perl_newCONSTSUB(pTHX_ HV *stash, const char *name, SV *sv) |
5476c433 | 4585 | { |
27da23d5 | 4586 | dVAR; |
beab0874 | 4587 | CV* cv; |
5476c433 | 4588 | |
11faa288 | 4589 | ENTER; |
11faa288 | 4590 | |
f4dd75d9 | 4591 | SAVECOPLINE(PL_curcop); |
11faa288 | 4592 | CopLINE_set(PL_curcop, PL_copline); |
f4dd75d9 GS |
4593 | |
4594 | SAVEHINTS(); | |
3280af22 | 4595 | PL_hints &= ~HINT_BLOCK_SCOPE; |
11faa288 GS |
4596 | |
4597 | if (stash) { | |
4598 | SAVESPTR(PL_curstash); | |
4599 | SAVECOPSTASH(PL_curcop); | |
4600 | PL_curstash = stash; | |
05ec9bb3 | 4601 | CopSTASH_set(PL_curcop,stash); |
11faa288 | 4602 | } |
5476c433 | 4603 | |
91a15d0d | 4604 | cv = newXS(name, const_sv_xsub, savepv(CopFILE(PL_curcop))); |
beab0874 JT |
4605 | CvXSUBANY(cv).any_ptr = sv; |
4606 | CvCONST_on(cv); | |
c69006e4 | 4607 | sv_setpvn((SV*)cv, "", 0); /* prototype is "" */ |
5476c433 | 4608 | |
02f28d44 MHM |
4609 | if (stash) |
4610 | CopSTASH_free(PL_curcop); | |
4611 | ||
11faa288 | 4612 | LEAVE; |
beab0874 JT |
4613 | |
4614 | return cv; | |
5476c433 JD |
4615 | } |
4616 | ||
954c1994 GS |
4617 | /* |
4618 | =for apidoc U||newXS | |
4619 | ||
4620 | Used by C<xsubpp> to hook up XSUBs as Perl subs. | |
4621 | ||
4622 | =cut | |
4623 | */ | |
4624 | ||
57d3b86d | 4625 | CV * |
bfed75c6 | 4626 | Perl_newXS(pTHX_ const char *name, XSUBADDR_t subaddr, const char *filename) |
a0d0e21e | 4627 | { |
c99da370 JH |
4628 | GV *gv = gv_fetchpv(name ? name : |
4629 | (PL_curstash ? "__ANON__" : "__ANON__::__ANON__"), | |
4630 | GV_ADDMULTI, SVt_PVCV); | |
79072805 | 4631 | register CV *cv; |
44a8e56a | 4632 | |
1ecdd9a8 HS |
4633 | if (!subaddr) |
4634 | Perl_croak(aTHX_ "panic: no address for '%s' in '%s'", name, filename); | |
4635 | ||
155aba94 | 4636 | if ((cv = (name ? GvCV(gv) : Nullcv))) { |
44a8e56a | 4637 | if (GvCVGEN(gv)) { |
4638 | /* just a cached method */ | |
4639 | SvREFCNT_dec(cv); | |
66a1b24b | 4640 | cv = Nullcv; |
44a8e56a | 4641 | } |
4642 | else if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
4643 | /* already defined (or promised) */ | |
1df70142 | 4644 | /* XXX It's possible for this HvNAME_get to return null, and get passed into strEQ */ |
66a1b24b AL |
4645 | if (ckWARN(WARN_REDEFINE)) { |
4646 | GV * const gvcv = CvGV(cv); | |
4647 | if (gvcv) { | |
4648 | HV * const stash = GvSTASH(gvcv); | |
4649 | if (stash) { | |
4650 | const char *name = HvNAME_get(stash); | |
4651 | if ( strEQ(name,"autouse") ) { | |
4652 | const line_t oldline = CopLINE(PL_curcop); | |
4653 | if (PL_copline != NOLINE) | |
4654 | CopLINE_set(PL_curcop, PL_copline); | |
4655 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), | |
4656 | CvCONST(cv) ? "Constant subroutine %s redefined" | |
4657 | : "Subroutine %s redefined" | |
4658 | ,name); | |
4659 | CopLINE_set(PL_curcop, oldline); | |
4660 | } | |
4661 | } | |
4662 | } | |
a0d0e21e LW |
4663 | } |
4664 | SvREFCNT_dec(cv); | |
66a1b24b | 4665 | cv = Nullcv; |
79072805 | 4666 | } |
79072805 | 4667 | } |
44a8e56a | 4668 | |
4669 | if (cv) /* must reuse cv if autoloaded */ | |
4670 | cv_undef(cv); | |
a0d0e21e LW |
4671 | else { |
4672 | cv = (CV*)NEWSV(1105,0); | |
4673 | sv_upgrade((SV *)cv, SVt_PVCV); | |
44a8e56a | 4674 | if (name) { |
4675 | GvCV(gv) = cv; | |
4676 | GvCVGEN(gv) = 0; | |
3280af22 | 4677 | PL_sub_generation++; |
44a8e56a | 4678 | } |
a0d0e21e | 4679 | } |
65c50114 | 4680 | CvGV(cv) = gv; |
b195d487 | 4681 | (void)gv_fetchfile(filename); |
dd374669 | 4682 | CvFILE(cv) = (char *)filename; /* NOTE: not copied, as it is expected to be |
57843af0 | 4683 | an external constant string */ |
a0d0e21e | 4684 | CvXSUB(cv) = subaddr; |
44a8e56a | 4685 | |
28757baa | 4686 | if (name) { |
e1ec3a88 | 4687 | const char *s = strrchr(name,':'); |
28757baa | 4688 | if (s) |
4689 | s++; | |
4690 | else | |
4691 | s = name; | |
ed094faf | 4692 | |
7d30b5c4 | 4693 | if (*s != 'B' && *s != 'E' && *s != 'C' && *s != 'I') |
ed094faf GS |
4694 | goto done; |
4695 | ||
28757baa | 4696 | if (strEQ(s, "BEGIN")) { |
3280af22 NIS |
4697 | if (!PL_beginav) |
4698 | PL_beginav = newAV(); | |
ea2f84a3 GS |
4699 | av_push(PL_beginav, (SV*)cv); |
4700 | GvCV(gv) = 0; /* cv has been hijacked */ | |
28757baa | 4701 | } |
4702 | else if (strEQ(s, "END")) { | |
3280af22 NIS |
4703 | if (!PL_endav) |
4704 | PL_endav = newAV(); | |
4705 | av_unshift(PL_endav, 1); | |
ea2f84a3 GS |
4706 | av_store(PL_endav, 0, (SV*)cv); |
4707 | GvCV(gv) = 0; /* cv has been hijacked */ | |
28757baa | 4708 | } |
7d30b5c4 GS |
4709 | else if (strEQ(s, "CHECK")) { |
4710 | if (!PL_checkav) | |
4711 | PL_checkav = newAV(); | |
ddda08b7 | 4712 | if (PL_main_start && ckWARN(WARN_VOID)) |
9014280d | 4713 | Perl_warner(aTHX_ packWARN(WARN_VOID), "Too late to run CHECK block"); |
7d30b5c4 | 4714 | av_unshift(PL_checkav, 1); |
ea2f84a3 GS |
4715 | av_store(PL_checkav, 0, (SV*)cv); |
4716 | GvCV(gv) = 0; /* cv has been hijacked */ | |
4f25aa18 | 4717 | } |
7d07dbc2 | 4718 | else if (strEQ(s, "INIT")) { |
3280af22 NIS |
4719 | if (!PL_initav) |
4720 | PL_initav = newAV(); | |
ddda08b7 | 4721 | if (PL_main_start && ckWARN(WARN_VOID)) |
9014280d | 4722 | Perl_warner(aTHX_ packWARN(WARN_VOID), "Too late to run INIT block"); |
ea2f84a3 GS |
4723 | av_push(PL_initav, (SV*)cv); |
4724 | GvCV(gv) = 0; /* cv has been hijacked */ | |
ae77835f | 4725 | } |
28757baa | 4726 | } |
8990e307 | 4727 | else |
a5f75d66 | 4728 | CvANON_on(cv); |
44a8e56a | 4729 | |
ed094faf | 4730 | done: |
a0d0e21e | 4731 | return cv; |
79072805 LW |
4732 | } |
4733 | ||
4734 | void | |
864dbfa3 | 4735 | Perl_newFORM(pTHX_ I32 floor, OP *o, OP *block) |
79072805 LW |
4736 | { |
4737 | register CV *cv; | |
79072805 | 4738 | GV *gv; |
79072805 | 4739 | |
11343788 | 4740 | if (o) |
7a5fd60d | 4741 | gv = gv_fetchsv(cSVOPo->op_sv, TRUE, SVt_PVFM); |
79072805 | 4742 | else |
7a5fd60d NC |
4743 | gv = gv_fetchpv("STDOUT", TRUE, SVt_PVFM); |
4744 | ||
7fb37951 AMS |
4745 | #ifdef GV_UNIQUE_CHECK |
4746 | if (GvUNIQUE(gv)) { | |
4747 | Perl_croak(aTHX_ "Bad symbol for form (GV is unique)"); | |
5bd07a3d DM |
4748 | } |
4749 | #endif | |
a5f75d66 | 4750 | GvMULTI_on(gv); |
155aba94 | 4751 | if ((cv = GvFORM(gv))) { |
599cee73 | 4752 | if (ckWARN(WARN_REDEFINE)) { |
6867be6d | 4753 | const line_t oldline = CopLINE(PL_curcop); |
d8a34499 IK |
4754 | if (PL_copline != NOLINE) |
4755 | CopLINE_set(PL_curcop, PL_copline); | |
7a5fd60d NC |
4756 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), |
4757 | o ? "Format %"SVf" redefined" | |
4758 | : "Format STDOUT redefined" ,cSVOPo->op_sv); | |
57843af0 | 4759 | CopLINE_set(PL_curcop, oldline); |
79072805 | 4760 | } |
8990e307 | 4761 | SvREFCNT_dec(cv); |
79072805 | 4762 | } |
3280af22 | 4763 | cv = PL_compcv; |
79072805 | 4764 | GvFORM(gv) = cv; |
65c50114 | 4765 | CvGV(cv) = gv; |
a636914a | 4766 | CvFILE_set_from_cop(cv, PL_curcop); |
79072805 | 4767 | |
a0d0e21e | 4768 | |
dd2155a4 | 4769 | pad_tidy(padtidy_FORMAT); |
79072805 | 4770 | CvROOT(cv) = newUNOP(OP_LEAVEWRITE, 0, scalarseq(block)); |
7934575e GS |
4771 | CvROOT(cv)->op_private |= OPpREFCOUNTED; |
4772 | OpREFCNT_set(CvROOT(cv), 1); | |
79072805 LW |
4773 | CvSTART(cv) = LINKLIST(CvROOT(cv)); |
4774 | CvROOT(cv)->op_next = 0; | |
a2efc822 | 4775 | CALL_PEEP(CvSTART(cv)); |
11343788 | 4776 | op_free(o); |
3280af22 | 4777 | PL_copline = NOLINE; |
8990e307 | 4778 | LEAVE_SCOPE(floor); |
79072805 LW |
4779 | } |
4780 | ||
4781 | OP * | |
864dbfa3 | 4782 | Perl_newANONLIST(pTHX_ OP *o) |
79072805 | 4783 | { |
93a17b20 | 4784 | return newUNOP(OP_REFGEN, 0, |
11343788 | 4785 | mod(list(convert(OP_ANONLIST, 0, o)), OP_REFGEN)); |
79072805 LW |
4786 | } |
4787 | ||
4788 | OP * | |
864dbfa3 | 4789 | Perl_newANONHASH(pTHX_ OP *o) |
79072805 | 4790 | { |
93a17b20 | 4791 | return newUNOP(OP_REFGEN, 0, |
11343788 | 4792 | mod(list(convert(OP_ANONHASH, 0, o)), OP_REFGEN)); |
a0d0e21e LW |
4793 | } |
4794 | ||
4795 | OP * | |
864dbfa3 | 4796 | Perl_newANONSUB(pTHX_ I32 floor, OP *proto, OP *block) |
a0d0e21e | 4797 | { |
09bef843 SB |
4798 | return newANONATTRSUB(floor, proto, Nullop, block); |
4799 | } | |
4800 | ||
4801 | OP * | |
4802 | Perl_newANONATTRSUB(pTHX_ I32 floor, OP *proto, OP *attrs, OP *block) | |
4803 | { | |
a0d0e21e | 4804 | return newUNOP(OP_REFGEN, 0, |
09bef843 SB |
4805 | newSVOP(OP_ANONCODE, 0, |
4806 | (SV*)newATTRSUB(floor, 0, proto, attrs, block))); | |
79072805 LW |
4807 | } |
4808 | ||
4809 | OP * | |
864dbfa3 | 4810 | Perl_oopsAV(pTHX_ OP *o) |
79072805 | 4811 | { |
27da23d5 | 4812 | dVAR; |
ed6116ce LW |
4813 | switch (o->op_type) { |
4814 | case OP_PADSV: | |
4815 | o->op_type = OP_PADAV; | |
22c35a8c | 4816 | o->op_ppaddr = PL_ppaddr[OP_PADAV]; |
51e247a3 | 4817 | return ref(o, OP_RV2AV); |
b2ffa427 | 4818 | |
ed6116ce | 4819 | case OP_RV2SV: |
79072805 | 4820 | o->op_type = OP_RV2AV; |
22c35a8c | 4821 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
79072805 | 4822 | ref(o, OP_RV2AV); |
ed6116ce LW |
4823 | break; |
4824 | ||
4825 | default: | |
0453d815 | 4826 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 4827 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "oops: oopsAV"); |
ed6116ce LW |
4828 | break; |
4829 | } | |
79072805 LW |
4830 | return o; |
4831 | } | |
4832 | ||
4833 | OP * | |
864dbfa3 | 4834 | Perl_oopsHV(pTHX_ OP *o) |
79072805 | 4835 | { |
27da23d5 | 4836 | dVAR; |
ed6116ce LW |
4837 | switch (o->op_type) { |
4838 | case OP_PADSV: | |
4839 | case OP_PADAV: | |
4840 | o->op_type = OP_PADHV; | |
22c35a8c | 4841 | o->op_ppaddr = PL_ppaddr[OP_PADHV]; |
51e247a3 | 4842 | return ref(o, OP_RV2HV); |
ed6116ce LW |
4843 | |
4844 | case OP_RV2SV: | |
4845 | case OP_RV2AV: | |
79072805 | 4846 | o->op_type = OP_RV2HV; |
22c35a8c | 4847 | o->op_ppaddr = PL_ppaddr[OP_RV2HV]; |
79072805 | 4848 | ref(o, OP_RV2HV); |
ed6116ce LW |
4849 | break; |
4850 | ||
4851 | default: | |
0453d815 | 4852 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 4853 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "oops: oopsHV"); |
ed6116ce LW |
4854 | break; |
4855 | } | |
79072805 LW |
4856 | return o; |
4857 | } | |
4858 | ||
4859 | OP * | |
864dbfa3 | 4860 | Perl_newAVREF(pTHX_ OP *o) |
79072805 | 4861 | { |
27da23d5 | 4862 | dVAR; |
ed6116ce LW |
4863 | if (o->op_type == OP_PADANY) { |
4864 | o->op_type = OP_PADAV; | |
22c35a8c | 4865 | o->op_ppaddr = PL_ppaddr[OP_PADAV]; |
93a17b20 | 4866 | return o; |
ed6116ce | 4867 | } |
a1063b2d | 4868 | else if ((o->op_type == OP_RV2AV || o->op_type == OP_PADAV) |
9014280d PM |
4869 | && ckWARN(WARN_DEPRECATED)) { |
4870 | Perl_warner(aTHX_ packWARN(WARN_DEPRECATED), | |
a1063b2d RH |
4871 | "Using an array as a reference is deprecated"); |
4872 | } | |
79072805 LW |
4873 | return newUNOP(OP_RV2AV, 0, scalar(o)); |
4874 | } | |
4875 | ||
4876 | OP * | |
864dbfa3 | 4877 | Perl_newGVREF(pTHX_ I32 type, OP *o) |
79072805 | 4878 | { |
82092f1d | 4879 | if (type == OP_MAPSTART || type == OP_GREPSTART || type == OP_SORT) |
a0d0e21e | 4880 | return newUNOP(OP_NULL, 0, o); |
748a9306 | 4881 | return ref(newUNOP(OP_RV2GV, OPf_REF, o), type); |
79072805 LW |
4882 | } |
4883 | ||
4884 | OP * | |
864dbfa3 | 4885 | Perl_newHVREF(pTHX_ OP *o) |
79072805 | 4886 | { |
27da23d5 | 4887 | dVAR; |
ed6116ce LW |
4888 | if (o->op_type == OP_PADANY) { |
4889 | o->op_type = OP_PADHV; | |
22c35a8c | 4890 | o->op_ppaddr = PL_ppaddr[OP_PADHV]; |
93a17b20 | 4891 | return o; |
ed6116ce | 4892 | } |
a1063b2d | 4893 | else if ((o->op_type == OP_RV2HV || o->op_type == OP_PADHV) |
9014280d PM |
4894 | && ckWARN(WARN_DEPRECATED)) { |
4895 | Perl_warner(aTHX_ packWARN(WARN_DEPRECATED), | |
a1063b2d RH |
4896 | "Using a hash as a reference is deprecated"); |
4897 | } | |
79072805 LW |
4898 | return newUNOP(OP_RV2HV, 0, scalar(o)); |
4899 | } | |
4900 | ||
4901 | OP * | |
864dbfa3 | 4902 | Perl_oopsCV(pTHX_ OP *o) |
79072805 | 4903 | { |
cea2e8a9 | 4904 | Perl_croak(aTHX_ "NOT IMPL LINE %d",__LINE__); |
79072805 | 4905 | /* STUB */ |
73d840c0 | 4906 | (void)o; |
0dbb1585 | 4907 | NORETURN_FUNCTION_END; |
79072805 LW |
4908 | } |
4909 | ||
4910 | OP * | |
864dbfa3 | 4911 | Perl_newCVREF(pTHX_ I32 flags, OP *o) |
79072805 | 4912 | { |
c07a80fd | 4913 | return newUNOP(OP_RV2CV, flags, scalar(o)); |
79072805 LW |
4914 | } |
4915 | ||
4916 | OP * | |
864dbfa3 | 4917 | Perl_newSVREF(pTHX_ OP *o) |
79072805 | 4918 | { |
27da23d5 | 4919 | dVAR; |
ed6116ce LW |
4920 | if (o->op_type == OP_PADANY) { |
4921 | o->op_type = OP_PADSV; | |
22c35a8c | 4922 | o->op_ppaddr = PL_ppaddr[OP_PADSV]; |
93a17b20 | 4923 | return o; |
ed6116ce | 4924 | } |
224a4551 MB |
4925 | else if (o->op_type == OP_THREADSV && !(o->op_flags & OPpDONE_SVREF)) { |
4926 | o->op_flags |= OPpDONE_SVREF; | |
a863c7d1 | 4927 | return o; |
224a4551 | 4928 | } |
79072805 LW |
4929 | return newUNOP(OP_RV2SV, 0, scalar(o)); |
4930 | } | |
4931 | ||
61b743bb DM |
4932 | /* Check routines. See the comments at the top of this file for details |
4933 | * on when these are called */ | |
79072805 LW |
4934 | |
4935 | OP * | |
cea2e8a9 | 4936 | Perl_ck_anoncode(pTHX_ OP *o) |
5f05dabc | 4937 | { |
dd2155a4 | 4938 | cSVOPo->op_targ = pad_add_anon(cSVOPo->op_sv, o->op_type); |
5dc0d613 | 4939 | cSVOPo->op_sv = Nullsv; |
5dc0d613 | 4940 | return o; |
5f05dabc | 4941 | } |
4942 | ||
4943 | OP * | |
cea2e8a9 | 4944 | Perl_ck_bitop(pTHX_ OP *o) |
55497cff | 4945 | { |
276b2a0c RGS |
4946 | #define OP_IS_NUMCOMPARE(op) \ |
4947 | ((op) == OP_LT || (op) == OP_I_LT || \ | |
4948 | (op) == OP_GT || (op) == OP_I_GT || \ | |
4949 | (op) == OP_LE || (op) == OP_I_LE || \ | |
4950 | (op) == OP_GE || (op) == OP_I_GE || \ | |
4951 | (op) == OP_EQ || (op) == OP_I_EQ || \ | |
4952 | (op) == OP_NE || (op) == OP_I_NE || \ | |
4953 | (op) == OP_NCMP || (op) == OP_I_NCMP) | |
eb160463 | 4954 | o->op_private = (U8)(PL_hints & HINT_PRIVATE_MASK); |
2b84528b RGS |
4955 | if (!(o->op_flags & OPf_STACKED) /* Not an assignment */ |
4956 | && (o->op_type == OP_BIT_OR | |
4957 | || o->op_type == OP_BIT_AND | |
4958 | || o->op_type == OP_BIT_XOR)) | |
276b2a0c | 4959 | { |
1df70142 AL |
4960 | const OP * const left = cBINOPo->op_first; |
4961 | const OP * const right = left->op_sibling; | |
96a925ab YST |
4962 | if ((OP_IS_NUMCOMPARE(left->op_type) && |
4963 | (left->op_flags & OPf_PARENS) == 0) || | |
4964 | (OP_IS_NUMCOMPARE(right->op_type) && | |
4965 | (right->op_flags & OPf_PARENS) == 0)) | |
276b2a0c RGS |
4966 | if (ckWARN(WARN_PRECEDENCE)) |
4967 | Perl_warner(aTHX_ packWARN(WARN_PRECEDENCE), | |
4968 | "Possible precedence problem on bitwise %c operator", | |
4969 | o->op_type == OP_BIT_OR ? '|' | |
4970 | : o->op_type == OP_BIT_AND ? '&' : '^' | |
4971 | ); | |
4972 | } | |
5dc0d613 | 4973 | return o; |
55497cff | 4974 | } |
4975 | ||
4976 | OP * | |
cea2e8a9 | 4977 | Perl_ck_concat(pTHX_ OP *o) |
79072805 | 4978 | { |
6867be6d | 4979 | const OP *kid = cUNOPo->op_first; |
df91b2c5 AE |
4980 | if (kid->op_type == OP_CONCAT && !(kid->op_private & OPpTARGET_MY) && |
4981 | !(kUNOP->op_first->op_flags & OPf_MOD)) | |
0165acc7 | 4982 | o->op_flags |= OPf_STACKED; |
11343788 | 4983 | return o; |
79072805 LW |
4984 | } |
4985 | ||
4986 | OP * | |
cea2e8a9 | 4987 | Perl_ck_spair(pTHX_ OP *o) |
79072805 | 4988 | { |
27da23d5 | 4989 | dVAR; |
11343788 | 4990 | if (o->op_flags & OPf_KIDS) { |
79072805 | 4991 | OP* newop; |
a0d0e21e | 4992 | OP* kid; |
6867be6d | 4993 | const OPCODE type = o->op_type; |
5dc0d613 | 4994 | o = modkids(ck_fun(o), type); |
11343788 | 4995 | kid = cUNOPo->op_first; |
a0d0e21e LW |
4996 | newop = kUNOP->op_first->op_sibling; |
4997 | if (newop && | |
4998 | (newop->op_sibling || | |
22c35a8c | 4999 | !(PL_opargs[newop->op_type] & OA_RETSCALAR) || |
a0d0e21e LW |
5000 | newop->op_type == OP_PADAV || newop->op_type == OP_PADHV || |
5001 | newop->op_type == OP_RV2AV || newop->op_type == OP_RV2HV)) { | |
b2ffa427 | 5002 | |
11343788 | 5003 | return o; |
a0d0e21e LW |
5004 | } |
5005 | op_free(kUNOP->op_first); | |
5006 | kUNOP->op_first = newop; | |
5007 | } | |
22c35a8c | 5008 | o->op_ppaddr = PL_ppaddr[++o->op_type]; |
11343788 | 5009 | return ck_fun(o); |
a0d0e21e LW |
5010 | } |
5011 | ||
5012 | OP * | |
cea2e8a9 | 5013 | Perl_ck_delete(pTHX_ OP *o) |
a0d0e21e | 5014 | { |
11343788 | 5015 | o = ck_fun(o); |
5dc0d613 | 5016 | o->op_private = 0; |
11343788 MB |
5017 | if (o->op_flags & OPf_KIDS) { |
5018 | OP *kid = cUNOPo->op_first; | |
01020589 GS |
5019 | switch (kid->op_type) { |
5020 | case OP_ASLICE: | |
5021 | o->op_flags |= OPf_SPECIAL; | |
5022 | /* FALL THROUGH */ | |
5023 | case OP_HSLICE: | |
5dc0d613 | 5024 | o->op_private |= OPpSLICE; |
01020589 GS |
5025 | break; |
5026 | case OP_AELEM: | |
5027 | o->op_flags |= OPf_SPECIAL; | |
5028 | /* FALL THROUGH */ | |
5029 | case OP_HELEM: | |
5030 | break; | |
5031 | default: | |
5032 | Perl_croak(aTHX_ "%s argument is not a HASH or ARRAY element or slice", | |
53e06cf0 | 5033 | OP_DESC(o)); |
01020589 | 5034 | } |
93c66552 | 5035 | op_null(kid); |
79072805 | 5036 | } |
11343788 | 5037 | return o; |
79072805 LW |
5038 | } |
5039 | ||
5040 | OP * | |
96e176bf CL |
5041 | Perl_ck_die(pTHX_ OP *o) |
5042 | { | |
5043 | #ifdef VMS | |
5044 | if (VMSISH_HUSHED) o->op_private |= OPpHUSH_VMSISH; | |
5045 | #endif | |
5046 | return ck_fun(o); | |
5047 | } | |
5048 | ||
5049 | OP * | |
cea2e8a9 | 5050 | Perl_ck_eof(pTHX_ OP *o) |
79072805 | 5051 | { |
6867be6d | 5052 | const I32 type = o->op_type; |
79072805 | 5053 | |
11343788 MB |
5054 | if (o->op_flags & OPf_KIDS) { |
5055 | if (cLISTOPo->op_first->op_type == OP_STUB) { | |
5056 | op_free(o); | |
8fde6460 | 5057 | o = newUNOP(type, OPf_SPECIAL, newGVOP(OP_GV, 0, PL_argvgv)); |
8990e307 | 5058 | } |
11343788 | 5059 | return ck_fun(o); |
79072805 | 5060 | } |
11343788 | 5061 | return o; |
79072805 LW |
5062 | } |
5063 | ||
5064 | OP * | |
cea2e8a9 | 5065 | Perl_ck_eval(pTHX_ OP *o) |
79072805 | 5066 | { |
27da23d5 | 5067 | dVAR; |
3280af22 | 5068 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 MB |
5069 | if (o->op_flags & OPf_KIDS) { |
5070 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 | 5071 | |
93a17b20 | 5072 | if (!kid) { |
11343788 | 5073 | o->op_flags &= ~OPf_KIDS; |
93c66552 | 5074 | op_null(o); |
79072805 | 5075 | } |
b14574b4 | 5076 | else if (kid->op_type == OP_LINESEQ || kid->op_type == OP_STUB) { |
79072805 LW |
5077 | LOGOP *enter; |
5078 | ||
11343788 MB |
5079 | cUNOPo->op_first = 0; |
5080 | op_free(o); | |
79072805 | 5081 | |
b7dc083c | 5082 | NewOp(1101, enter, 1, LOGOP); |
79072805 | 5083 | enter->op_type = OP_ENTERTRY; |
22c35a8c | 5084 | enter->op_ppaddr = PL_ppaddr[OP_ENTERTRY]; |
79072805 LW |
5085 | enter->op_private = 0; |
5086 | ||
5087 | /* establish postfix order */ | |
5088 | enter->op_next = (OP*)enter; | |
5089 | ||
11343788 MB |
5090 | o = prepend_elem(OP_LINESEQ, (OP*)enter, (OP*)kid); |
5091 | o->op_type = OP_LEAVETRY; | |
22c35a8c | 5092 | o->op_ppaddr = PL_ppaddr[OP_LEAVETRY]; |
11343788 MB |
5093 | enter->op_other = o; |
5094 | return o; | |
79072805 | 5095 | } |
b5c19bd7 | 5096 | else { |
473986ff | 5097 | scalar((OP*)kid); |
b5c19bd7 DM |
5098 | PL_cv_has_eval = 1; |
5099 | } | |
79072805 LW |
5100 | } |
5101 | else { | |
11343788 | 5102 | op_free(o); |
54b9620d | 5103 | o = newUNOP(OP_ENTEREVAL, 0, newDEFSVOP()); |
79072805 | 5104 | } |
3280af22 | 5105 | o->op_targ = (PADOFFSET)PL_hints; |
11343788 | 5106 | return o; |
79072805 LW |
5107 | } |
5108 | ||
5109 | OP * | |
d98f61e7 GS |
5110 | Perl_ck_exit(pTHX_ OP *o) |
5111 | { | |
5112 | #ifdef VMS | |
5113 | HV *table = GvHV(PL_hintgv); | |
5114 | if (table) { | |
5115 | SV **svp = hv_fetch(table, "vmsish_exit", 11, FALSE); | |
5116 | if (svp && *svp && SvTRUE(*svp)) | |
5117 | o->op_private |= OPpEXIT_VMSISH; | |
5118 | } | |
96e176bf | 5119 | if (VMSISH_HUSHED) o->op_private |= OPpHUSH_VMSISH; |
d98f61e7 GS |
5120 | #endif |
5121 | return ck_fun(o); | |
5122 | } | |
5123 | ||
5124 | OP * | |
cea2e8a9 | 5125 | Perl_ck_exec(pTHX_ OP *o) |
79072805 | 5126 | { |
11343788 | 5127 | if (o->op_flags & OPf_STACKED) { |
6867be6d | 5128 | OP *kid; |
11343788 MB |
5129 | o = ck_fun(o); |
5130 | kid = cUNOPo->op_first->op_sibling; | |
8990e307 | 5131 | if (kid->op_type == OP_RV2GV) |
93c66552 | 5132 | op_null(kid); |
79072805 | 5133 | } |
463ee0b2 | 5134 | else |
11343788 MB |
5135 | o = listkids(o); |
5136 | return o; | |
79072805 LW |
5137 | } |
5138 | ||
5139 | OP * | |
cea2e8a9 | 5140 | Perl_ck_exists(pTHX_ OP *o) |
5f05dabc | 5141 | { |
5196be3e MB |
5142 | o = ck_fun(o); |
5143 | if (o->op_flags & OPf_KIDS) { | |
5144 | OP *kid = cUNOPo->op_first; | |
afebc493 GS |
5145 | if (kid->op_type == OP_ENTERSUB) { |
5146 | (void) ref(kid, o->op_type); | |
5147 | if (kid->op_type != OP_RV2CV && !PL_error_count) | |
5148 | Perl_croak(aTHX_ "%s argument is not a subroutine name", | |
53e06cf0 | 5149 | OP_DESC(o)); |
afebc493 GS |
5150 | o->op_private |= OPpEXISTS_SUB; |
5151 | } | |
5152 | else if (kid->op_type == OP_AELEM) | |
01020589 GS |
5153 | o->op_flags |= OPf_SPECIAL; |
5154 | else if (kid->op_type != OP_HELEM) | |
5155 | Perl_croak(aTHX_ "%s argument is not a HASH or ARRAY element", | |
53e06cf0 | 5156 | OP_DESC(o)); |
93c66552 | 5157 | op_null(kid); |
5f05dabc | 5158 | } |
5196be3e | 5159 | return o; |
5f05dabc | 5160 | } |
5161 | ||
79072805 | 5162 | OP * |
cea2e8a9 | 5163 | Perl_ck_rvconst(pTHX_ register OP *o) |
79072805 | 5164 | { |
27da23d5 | 5165 | dVAR; |
11343788 | 5166 | SVOP *kid = (SVOP*)cUNOPo->op_first; |
85e6fe83 | 5167 | |
3280af22 | 5168 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
79072805 | 5169 | if (kid->op_type == OP_CONST) { |
44a8e56a | 5170 | int iscv; |
5171 | GV *gv; | |
504618e9 | 5172 | SV * const kidsv = kid->op_sv; |
44a8e56a | 5173 | |
779c5bc9 GS |
5174 | /* Is it a constant from cv_const_sv()? */ |
5175 | if (SvROK(kidsv) && SvREADONLY(kidsv)) { | |
5176 | SV *rsv = SvRV(kidsv); | |
504618e9 | 5177 | const int svtype = SvTYPE(rsv); |
e1ec3a88 | 5178 | const char *badtype = Nullch; |
779c5bc9 GS |
5179 | |
5180 | switch (o->op_type) { | |
5181 | case OP_RV2SV: | |
5182 | if (svtype > SVt_PVMG) | |
5183 | badtype = "a SCALAR"; | |
5184 | break; | |
5185 | case OP_RV2AV: | |
5186 | if (svtype != SVt_PVAV) | |
5187 | badtype = "an ARRAY"; | |
5188 | break; | |
5189 | case OP_RV2HV: | |
6d822dc4 | 5190 | if (svtype != SVt_PVHV) |
779c5bc9 | 5191 | badtype = "a HASH"; |
779c5bc9 GS |
5192 | break; |
5193 | case OP_RV2CV: | |
5194 | if (svtype != SVt_PVCV) | |
5195 | badtype = "a CODE"; | |
5196 | break; | |
5197 | } | |
5198 | if (badtype) | |
cea2e8a9 | 5199 | Perl_croak(aTHX_ "Constant is not %s reference", badtype); |
779c5bc9 GS |
5200 | return o; |
5201 | } | |
3280af22 | 5202 | if ((PL_hints & HINT_STRICT_REFS) && (kid->op_private & OPpCONST_BARE)) { |
e1ec3a88 | 5203 | const char *badthing = Nullch; |
5dc0d613 | 5204 | switch (o->op_type) { |
44a8e56a | 5205 | case OP_RV2SV: |
5206 | badthing = "a SCALAR"; | |
5207 | break; | |
5208 | case OP_RV2AV: | |
5209 | badthing = "an ARRAY"; | |
5210 | break; | |
5211 | case OP_RV2HV: | |
5212 | badthing = "a HASH"; | |
5213 | break; | |
5214 | } | |
5215 | if (badthing) | |
1c846c1f | 5216 | Perl_croak(aTHX_ |
7a5fd60d NC |
5217 | "Can't use bareword (\"%"SVf"\") as %s ref while \"strict refs\" in use", |
5218 | kidsv, badthing); | |
44a8e56a | 5219 | } |
93233ece CS |
5220 | /* |
5221 | * This is a little tricky. We only want to add the symbol if we | |
5222 | * didn't add it in the lexer. Otherwise we get duplicate strict | |
5223 | * warnings. But if we didn't add it in the lexer, we must at | |
5224 | * least pretend like we wanted to add it even if it existed before, | |
5225 | * or we get possible typo warnings. OPpCONST_ENTERED says | |
5226 | * whether the lexer already added THIS instance of this symbol. | |
5227 | */ | |
5196be3e | 5228 | iscv = (o->op_type == OP_RV2CV) * 2; |
93233ece | 5229 | do { |
7a5fd60d | 5230 | gv = gv_fetchsv(kidsv, |
748a9306 | 5231 | iscv | !(kid->op_private & OPpCONST_ENTERED), |
a0d0e21e LW |
5232 | iscv |
5233 | ? SVt_PVCV | |
11343788 | 5234 | : o->op_type == OP_RV2SV |
a0d0e21e | 5235 | ? SVt_PV |
11343788 | 5236 | : o->op_type == OP_RV2AV |
a0d0e21e | 5237 | ? SVt_PVAV |
11343788 | 5238 | : o->op_type == OP_RV2HV |
a0d0e21e LW |
5239 | ? SVt_PVHV |
5240 | : SVt_PVGV); | |
93233ece CS |
5241 | } while (!gv && !(kid->op_private & OPpCONST_ENTERED) && !iscv++); |
5242 | if (gv) { | |
5243 | kid->op_type = OP_GV; | |
5244 | SvREFCNT_dec(kid->op_sv); | |
350de78d | 5245 | #ifdef USE_ITHREADS |
638eceb6 | 5246 | /* XXX hack: dependence on sizeof(PADOP) <= sizeof(SVOP) */ |
350de78d | 5247 | kPADOP->op_padix = pad_alloc(OP_GV, SVs_PADTMP); |
dd2155a4 | 5248 | SvREFCNT_dec(PAD_SVl(kPADOP->op_padix)); |
743e66e6 | 5249 | GvIN_PAD_on(gv); |
dd2155a4 | 5250 | PAD_SETSV(kPADOP->op_padix, (SV*) SvREFCNT_inc(gv)); |
350de78d | 5251 | #else |
93233ece | 5252 | kid->op_sv = SvREFCNT_inc(gv); |
350de78d | 5253 | #endif |
23f1ca44 | 5254 | kid->op_private = 0; |
76cd736e | 5255 | kid->op_ppaddr = PL_ppaddr[OP_GV]; |
a0d0e21e | 5256 | } |
79072805 | 5257 | } |
11343788 | 5258 | return o; |
79072805 LW |
5259 | } |
5260 | ||
5261 | OP * | |
cea2e8a9 | 5262 | Perl_ck_ftst(pTHX_ OP *o) |
79072805 | 5263 | { |
27da23d5 | 5264 | dVAR; |
6867be6d | 5265 | const I32 type = o->op_type; |
79072805 | 5266 | |
d0dca557 JD |
5267 | if (o->op_flags & OPf_REF) { |
5268 | /* nothing */ | |
5269 | } | |
5270 | else if (o->op_flags & OPf_KIDS && cUNOPo->op_first->op_type != OP_STUB) { | |
11343788 | 5271 | SVOP *kid = (SVOP*)cUNOPo->op_first; |
79072805 LW |
5272 | |
5273 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
a0d0e21e | 5274 | OP *newop = newGVOP(type, OPf_REF, |
7a5fd60d | 5275 | gv_fetchsv(kid->op_sv, TRUE, SVt_PVIO)); |
11343788 | 5276 | op_free(o); |
d0dca557 | 5277 | o = newop; |
181bc48d | 5278 | return o; |
79072805 | 5279 | } |
1af34c76 JH |
5280 | else { |
5281 | if ((PL_hints & HINT_FILETEST_ACCESS) && | |
5282 | OP_IS_FILETEST_ACCESS(o)) | |
5283 | o->op_private |= OPpFT_ACCESS; | |
5284 | } | |
fbb0b3b3 RGS |
5285 | if (PL_check[kid->op_type] == MEMBER_TO_FPTR(Perl_ck_ftst) |
5286 | && kid->op_type != OP_STAT && kid->op_type != OP_LSTAT) | |
5287 | o->op_private |= OPpFT_STACKED; | |
79072805 LW |
5288 | } |
5289 | else { | |
11343788 | 5290 | op_free(o); |
79072805 | 5291 | if (type == OP_FTTTY) |
8fde6460 | 5292 | o = newGVOP(type, OPf_REF, PL_stdingv); |
79072805 | 5293 | else |
d0dca557 | 5294 | o = newUNOP(type, 0, newDEFSVOP()); |
79072805 | 5295 | } |
11343788 | 5296 | return o; |
79072805 LW |
5297 | } |
5298 | ||
5299 | OP * | |
cea2e8a9 | 5300 | Perl_ck_fun(pTHX_ OP *o) |
79072805 | 5301 | { |
6867be6d | 5302 | const int type = o->op_type; |
22c35a8c | 5303 | register I32 oa = PL_opargs[type] >> OASHIFT; |
aeea060c | 5304 | |
11343788 | 5305 | if (o->op_flags & OPf_STACKED) { |
79072805 LW |
5306 | if ((oa & OA_OPTIONAL) && (oa >> 4) && !((oa >> 4) & OA_OPTIONAL)) |
5307 | oa &= ~OA_OPTIONAL; | |
5308 | else | |
11343788 | 5309 | return no_fh_allowed(o); |
79072805 LW |
5310 | } |
5311 | ||
11343788 | 5312 | if (o->op_flags & OPf_KIDS) { |
6867be6d AL |
5313 | OP **tokid = &cLISTOPo->op_first; |
5314 | register OP *kid = cLISTOPo->op_first; | |
5315 | OP *sibl; | |
5316 | I32 numargs = 0; | |
5317 | ||
8990e307 | 5318 | if (kid->op_type == OP_PUSHMARK || |
155aba94 | 5319 | (kid->op_type == OP_NULL && kid->op_targ == OP_PUSHMARK)) |
8990e307 | 5320 | { |
79072805 LW |
5321 | tokid = &kid->op_sibling; |
5322 | kid = kid->op_sibling; | |
5323 | } | |
22c35a8c | 5324 | if (!kid && PL_opargs[type] & OA_DEFGV) |
54b9620d | 5325 | *tokid = kid = newDEFSVOP(); |
79072805 LW |
5326 | |
5327 | while (oa && kid) { | |
5328 | numargs++; | |
5329 | sibl = kid->op_sibling; | |
5330 | switch (oa & 7) { | |
5331 | case OA_SCALAR: | |
62c18ce2 GS |
5332 | /* list seen where single (scalar) arg expected? */ |
5333 | if (numargs == 1 && !(oa >> 4) | |
5334 | && kid->op_type == OP_LIST && type != OP_SCALAR) | |
5335 | { | |
5336 | return too_many_arguments(o,PL_op_desc[type]); | |
5337 | } | |
79072805 LW |
5338 | scalar(kid); |
5339 | break; | |
5340 | case OA_LIST: | |
5341 | if (oa < 16) { | |
5342 | kid = 0; | |
5343 | continue; | |
5344 | } | |
5345 | else | |
5346 | list(kid); | |
5347 | break; | |
5348 | case OA_AVREF: | |
936edb8b | 5349 | if ((type == OP_PUSH || type == OP_UNSHIFT) |
f87c3213 | 5350 | && !kid->op_sibling && ckWARN(WARN_SYNTAX)) |
9014280d | 5351 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
de4864e4 | 5352 | "Useless use of %s with no values", |
936edb8b | 5353 | PL_op_desc[type]); |
b2ffa427 | 5354 | |
79072805 | 5355 | if (kid->op_type == OP_CONST && |
62c18ce2 GS |
5356 | (kid->op_private & OPpCONST_BARE)) |
5357 | { | |
79072805 | 5358 | OP *newop = newAVREF(newGVOP(OP_GV, 0, |
7a5fd60d | 5359 | gv_fetchsv(((SVOP*)kid)->op_sv, TRUE, SVt_PVAV) )); |
12bcd1a6 PM |
5360 | if (ckWARN2(WARN_DEPRECATED, WARN_SYNTAX)) |
5361 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), | |
7a5fd60d NC |
5362 | "Array @%"SVf" missing the @ in argument %"IVdf" of %s()", |
5363 | ((SVOP*)kid)->op_sv, (IV)numargs, PL_op_desc[type]); | |
79072805 LW |
5364 | op_free(kid); |
5365 | kid = newop; | |
5366 | kid->op_sibling = sibl; | |
5367 | *tokid = kid; | |
5368 | } | |
8990e307 | 5369 | else if (kid->op_type != OP_RV2AV && kid->op_type != OP_PADAV) |
35cd451c | 5370 | bad_type(numargs, "array", PL_op_desc[type], kid); |
a0d0e21e | 5371 | mod(kid, type); |
79072805 LW |
5372 | break; |
5373 | case OA_HVREF: | |
5374 | if (kid->op_type == OP_CONST && | |
62c18ce2 GS |
5375 | (kid->op_private & OPpCONST_BARE)) |
5376 | { | |
79072805 | 5377 | OP *newop = newHVREF(newGVOP(OP_GV, 0, |
7a5fd60d | 5378 | gv_fetchsv(((SVOP*)kid)->op_sv, TRUE, SVt_PVHV) )); |
12bcd1a6 PM |
5379 | if (ckWARN2(WARN_DEPRECATED, WARN_SYNTAX)) |
5380 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), | |
7a5fd60d NC |
5381 | "Hash %%%"SVf" missing the %% in argument %"IVdf" of %s()", |
5382 | ((SVOP*)kid)->op_sv, (IV)numargs, PL_op_desc[type]); | |
79072805 LW |
5383 | op_free(kid); |
5384 | kid = newop; | |
5385 | kid->op_sibling = sibl; | |
5386 | *tokid = kid; | |
5387 | } | |
8990e307 | 5388 | else if (kid->op_type != OP_RV2HV && kid->op_type != OP_PADHV) |
35cd451c | 5389 | bad_type(numargs, "hash", PL_op_desc[type], kid); |
a0d0e21e | 5390 | mod(kid, type); |
79072805 LW |
5391 | break; |
5392 | case OA_CVREF: | |
5393 | { | |
a0d0e21e | 5394 | OP *newop = newUNOP(OP_NULL, 0, kid); |
79072805 LW |
5395 | kid->op_sibling = 0; |
5396 | linklist(kid); | |
5397 | newop->op_next = newop; | |
5398 | kid = newop; | |
5399 | kid->op_sibling = sibl; | |
5400 | *tokid = kid; | |
5401 | } | |
5402 | break; | |
5403 | case OA_FILEREF: | |
c340be78 | 5404 | if (kid->op_type != OP_GV && kid->op_type != OP_RV2GV) { |
79072805 | 5405 | if (kid->op_type == OP_CONST && |
62c18ce2 GS |
5406 | (kid->op_private & OPpCONST_BARE)) |
5407 | { | |
79072805 | 5408 | OP *newop = newGVOP(OP_GV, 0, |
7a5fd60d | 5409 | gv_fetchsv(((SVOP*)kid)->op_sv, TRUE, SVt_PVIO) ); |
afbdacea | 5410 | if (!(o->op_private & 1) && /* if not unop */ |
8a996ce8 | 5411 | kid == cLISTOPo->op_last) |
364daeac | 5412 | cLISTOPo->op_last = newop; |
79072805 LW |
5413 | op_free(kid); |
5414 | kid = newop; | |
5415 | } | |
1ea32a52 GS |
5416 | else if (kid->op_type == OP_READLINE) { |
5417 | /* neophyte patrol: open(<FH>), close(<FH>) etc. */ | |
53e06cf0 | 5418 | bad_type(numargs, "HANDLE", OP_DESC(o), kid); |
1ea32a52 | 5419 | } |
79072805 | 5420 | else { |
35cd451c | 5421 | I32 flags = OPf_SPECIAL; |
a6c40364 | 5422 | I32 priv = 0; |
2c8ac474 GS |
5423 | PADOFFSET targ = 0; |
5424 | ||
35cd451c | 5425 | /* is this op a FH constructor? */ |
853846ea | 5426 | if (is_handle_constructor(o,numargs)) { |
e1ec3a88 | 5427 | const char *name = Nullch; |
dd2155a4 | 5428 | STRLEN len = 0; |
2c8ac474 GS |
5429 | |
5430 | flags = 0; | |
5431 | /* Set a flag to tell rv2gv to vivify | |
853846ea NIS |
5432 | * need to "prove" flag does not mean something |
5433 | * else already - NI-S 1999/05/07 | |
2c8ac474 GS |
5434 | */ |
5435 | priv = OPpDEREF; | |
5436 | if (kid->op_type == OP_PADSV) { | |
dd2155a4 DM |
5437 | name = PAD_COMPNAME_PV(kid->op_targ); |
5438 | /* SvCUR of a pad namesv can't be trusted | |
5439 | * (see PL_generation), so calc its length | |
5440 | * manually */ | |
5441 | if (name) | |
5442 | len = strlen(name); | |
5443 | ||
2c8ac474 GS |
5444 | } |
5445 | else if (kid->op_type == OP_RV2SV | |
5446 | && kUNOP->op_first->op_type == OP_GV) | |
5447 | { | |
5448 | GV *gv = cGVOPx_gv(kUNOP->op_first); | |
5449 | name = GvNAME(gv); | |
5450 | len = GvNAMELEN(gv); | |
5451 | } | |
afd1915d GS |
5452 | else if (kid->op_type == OP_AELEM |
5453 | || kid->op_type == OP_HELEM) | |
5454 | { | |
0c4b0a3f JH |
5455 | OP *op; |
5456 | ||
5457 | name = 0; | |
5458 | if ((op = ((BINOP*)kid)->op_first)) { | |
5459 | SV *tmpstr = Nullsv; | |
e1ec3a88 | 5460 | const char *a = |
0c4b0a3f JH |
5461 | kid->op_type == OP_AELEM ? |
5462 | "[]" : "{}"; | |
5463 | if (((op->op_type == OP_RV2AV) || | |
5464 | (op->op_type == OP_RV2HV)) && | |
5465 | (op = ((UNOP*)op)->op_first) && | |
5466 | (op->op_type == OP_GV)) { | |
5467 | /* packagevar $a[] or $h{} */ | |
5468 | GV *gv = cGVOPx_gv(op); | |
5469 | if (gv) | |
5470 | tmpstr = | |
5471 | Perl_newSVpvf(aTHX_ | |
5472 | "%s%c...%c", | |
5473 | GvNAME(gv), | |
5474 | a[0], a[1]); | |
5475 | } | |
5476 | else if (op->op_type == OP_PADAV | |
5477 | || op->op_type == OP_PADHV) { | |
5478 | /* lexicalvar $a[] or $h{} */ | |
6867be6d | 5479 | const char *padname = |
0c4b0a3f JH |
5480 | PAD_COMPNAME_PV(op->op_targ); |
5481 | if (padname) | |
5482 | tmpstr = | |
5483 | Perl_newSVpvf(aTHX_ | |
5484 | "%s%c...%c", | |
5485 | padname + 1, | |
5486 | a[0], a[1]); | |
5487 | ||
5488 | } | |
5489 | if (tmpstr) { | |
93524f2b | 5490 | name = SvPV_const(tmpstr, len); |
0c4b0a3f JH |
5491 | sv_2mortal(tmpstr); |
5492 | } | |
5493 | } | |
5494 | if (!name) { | |
5495 | name = "__ANONIO__"; | |
5496 | len = 10; | |
5497 | } | |
5498 | mod(kid, type); | |
afd1915d | 5499 | } |
2c8ac474 GS |
5500 | if (name) { |
5501 | SV *namesv; | |
5502 | targ = pad_alloc(OP_RV2GV, SVs_PADTMP); | |
dd2155a4 | 5503 | namesv = PAD_SVl(targ); |
862a34c6 | 5504 | SvUPGRADE(namesv, SVt_PV); |
2c8ac474 GS |
5505 | if (*name != '$') |
5506 | sv_setpvn(namesv, "$", 1); | |
5507 | sv_catpvn(namesv, name, len); | |
5508 | } | |
853846ea | 5509 | } |
79072805 | 5510 | kid->op_sibling = 0; |
35cd451c | 5511 | kid = newUNOP(OP_RV2GV, flags, scalar(kid)); |
2c8ac474 GS |
5512 | kid->op_targ = targ; |
5513 | kid->op_private |= priv; | |
79072805 LW |
5514 | } |
5515 | kid->op_sibling = sibl; | |
5516 | *tokid = kid; | |
5517 | } | |
5518 | scalar(kid); | |
5519 | break; | |
5520 | case OA_SCALARREF: | |
a0d0e21e | 5521 | mod(scalar(kid), type); |
79072805 LW |
5522 | break; |
5523 | } | |
5524 | oa >>= 4; | |
5525 | tokid = &kid->op_sibling; | |
5526 | kid = kid->op_sibling; | |
5527 | } | |
11343788 | 5528 | o->op_private |= numargs; |
79072805 | 5529 | if (kid) |
53e06cf0 | 5530 | return too_many_arguments(o,OP_DESC(o)); |
11343788 | 5531 | listkids(o); |
79072805 | 5532 | } |
22c35a8c | 5533 | else if (PL_opargs[type] & OA_DEFGV) { |
11343788 | 5534 | op_free(o); |
54b9620d | 5535 | return newUNOP(type, 0, newDEFSVOP()); |
a0d0e21e LW |
5536 | } |
5537 | ||
79072805 LW |
5538 | if (oa) { |
5539 | while (oa & OA_OPTIONAL) | |
5540 | oa >>= 4; | |
5541 | if (oa && oa != OA_LIST) | |
53e06cf0 | 5542 | return too_few_arguments(o,OP_DESC(o)); |
79072805 | 5543 | } |
11343788 | 5544 | return o; |
79072805 LW |
5545 | } |
5546 | ||
5547 | OP * | |
cea2e8a9 | 5548 | Perl_ck_glob(pTHX_ OP *o) |
79072805 | 5549 | { |
27da23d5 | 5550 | dVAR; |
fb73857a | 5551 | GV *gv; |
5552 | ||
649da076 | 5553 | o = ck_fun(o); |
1f2bfc8a | 5554 | if ((o->op_flags & OPf_KIDS) && !cLISTOPo->op_first->op_sibling) |
54b9620d | 5555 | append_elem(OP_GLOB, o, newDEFSVOP()); |
fb73857a | 5556 | |
b9f751c0 GS |
5557 | if (!((gv = gv_fetchpv("glob", FALSE, SVt_PVCV)) |
5558 | && GvCVu(gv) && GvIMPORTED_CV(gv))) | |
5559 | { | |
fb73857a | 5560 | gv = gv_fetchpv("CORE::GLOBAL::glob", FALSE, SVt_PVCV); |
b9f751c0 | 5561 | } |
b1cb66bf | 5562 | |
52bb0670 | 5563 | #if !defined(PERL_EXTERNAL_GLOB) |
72b16652 | 5564 | /* XXX this can be tightened up and made more failsafe. */ |
f444d496 | 5565 | if (!(gv && GvCVu(gv) && GvIMPORTED_CV(gv))) { |
7d3fb230 | 5566 | GV *glob_gv; |
72b16652 | 5567 | ENTER; |
00ca71c1 NIS |
5568 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, |
5569 | newSVpvn("File::Glob", 10), Nullsv, Nullsv, Nullsv); | |
72b16652 | 5570 | gv = gv_fetchpv("CORE::GLOBAL::glob", FALSE, SVt_PVCV); |
7d3fb230 BS |
5571 | glob_gv = gv_fetchpv("File::Glob::csh_glob", FALSE, SVt_PVCV); |
5572 | GvCV(gv) = GvCV(glob_gv); | |
7fc63493 | 5573 | (void)SvREFCNT_inc((SV*)GvCV(gv)); |
7d3fb230 | 5574 | GvIMPORTED_CV_on(gv); |
72b16652 GS |
5575 | LEAVE; |
5576 | } | |
52bb0670 | 5577 | #endif /* PERL_EXTERNAL_GLOB */ |
72b16652 | 5578 | |
b9f751c0 | 5579 | if (gv && GvCVu(gv) && GvIMPORTED_CV(gv)) { |
5196be3e | 5580 | append_elem(OP_GLOB, o, |
80252599 | 5581 | newSVOP(OP_CONST, 0, newSViv(PL_glob_index++))); |
1f2bfc8a | 5582 | o->op_type = OP_LIST; |
22c35a8c | 5583 | o->op_ppaddr = PL_ppaddr[OP_LIST]; |
1f2bfc8a | 5584 | cLISTOPo->op_first->op_type = OP_PUSHMARK; |
22c35a8c | 5585 | cLISTOPo->op_first->op_ppaddr = PL_ppaddr[OP_PUSHMARK]; |
ad33f57d | 5586 | cLISTOPo->op_first->op_targ = 0; |
1f2bfc8a | 5587 | o = newUNOP(OP_ENTERSUB, OPf_STACKED, |
aeea060c | 5588 | append_elem(OP_LIST, o, |
1f2bfc8a MB |
5589 | scalar(newUNOP(OP_RV2CV, 0, |
5590 | newGVOP(OP_GV, 0, gv))))); | |
d58bf5aa MB |
5591 | o = newUNOP(OP_NULL, 0, ck_subr(o)); |
5592 | o->op_targ = OP_GLOB; /* hint at what it used to be */ | |
5593 | return o; | |
b1cb66bf | 5594 | } |
5595 | gv = newGVgen("main"); | |
a0d0e21e | 5596 | gv_IOadd(gv); |
11343788 MB |
5597 | append_elem(OP_GLOB, o, newGVOP(OP_GV, 0, gv)); |
5598 | scalarkids(o); | |
649da076 | 5599 | return o; |
79072805 LW |
5600 | } |
5601 | ||
5602 | OP * | |
cea2e8a9 | 5603 | Perl_ck_grep(pTHX_ OP *o) |
79072805 | 5604 | { |
27da23d5 | 5605 | dVAR; |
79072805 LW |
5606 | LOGOP *gwop; |
5607 | OP *kid; | |
6867be6d | 5608 | const OPCODE type = o->op_type == OP_GREPSTART ? OP_GREPWHILE : OP_MAPWHILE; |
59f00321 | 5609 | I32 offset; |
79072805 | 5610 | |
22c35a8c | 5611 | o->op_ppaddr = PL_ppaddr[OP_GREPSTART]; |
b7dc083c | 5612 | NewOp(1101, gwop, 1, LOGOP); |
aeea060c | 5613 | |
11343788 | 5614 | if (o->op_flags & OPf_STACKED) { |
a0d0e21e | 5615 | OP* k; |
11343788 MB |
5616 | o = ck_sort(o); |
5617 | kid = cLISTOPo->op_first->op_sibling; | |
d09ad856 BS |
5618 | if (!cUNOPx(kid)->op_next) |
5619 | Perl_croak(aTHX_ "panic: ck_grep"); | |
e3c9a8b9 | 5620 | for (k = cUNOPx(kid)->op_first; k; k = k->op_next) { |
a0d0e21e LW |
5621 | kid = k; |
5622 | } | |
5623 | kid->op_next = (OP*)gwop; | |
11343788 | 5624 | o->op_flags &= ~OPf_STACKED; |
93a17b20 | 5625 | } |
11343788 | 5626 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e LW |
5627 | if (type == OP_MAPWHILE) |
5628 | list(kid); | |
5629 | else | |
5630 | scalar(kid); | |
11343788 | 5631 | o = ck_fun(o); |
3280af22 | 5632 | if (PL_error_count) |
11343788 | 5633 | return o; |
aeea060c | 5634 | kid = cLISTOPo->op_first->op_sibling; |
79072805 | 5635 | if (kid->op_type != OP_NULL) |
cea2e8a9 | 5636 | Perl_croak(aTHX_ "panic: ck_grep"); |
79072805 LW |
5637 | kid = kUNOP->op_first; |
5638 | ||
a0d0e21e | 5639 | gwop->op_type = type; |
22c35a8c | 5640 | gwop->op_ppaddr = PL_ppaddr[type]; |
11343788 | 5641 | gwop->op_first = listkids(o); |
79072805 | 5642 | gwop->op_flags |= OPf_KIDS; |
79072805 | 5643 | gwop->op_other = LINKLIST(kid); |
79072805 | 5644 | kid->op_next = (OP*)gwop; |
59f00321 RGS |
5645 | offset = pad_findmy("$_"); |
5646 | if (offset == NOT_IN_PAD || PAD_COMPNAME_FLAGS(offset) & SVpad_OUR) { | |
5647 | o->op_private = gwop->op_private = 0; | |
5648 | gwop->op_targ = pad_alloc(type, SVs_PADTMP); | |
5649 | } | |
5650 | else { | |
5651 | o->op_private = gwop->op_private = OPpGREP_LEX; | |
5652 | gwop->op_targ = o->op_targ = offset; | |
5653 | } | |
79072805 | 5654 | |
11343788 | 5655 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e | 5656 | if (!kid || !kid->op_sibling) |
53e06cf0 | 5657 | return too_few_arguments(o,OP_DESC(o)); |
a0d0e21e LW |
5658 | for (kid = kid->op_sibling; kid; kid = kid->op_sibling) |
5659 | mod(kid, OP_GREPSTART); | |
5660 | ||
79072805 LW |
5661 | return (OP*)gwop; |
5662 | } | |
5663 | ||
5664 | OP * | |
cea2e8a9 | 5665 | Perl_ck_index(pTHX_ OP *o) |
79072805 | 5666 | { |
11343788 MB |
5667 | if (o->op_flags & OPf_KIDS) { |
5668 | OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
0b71040e LW |
5669 | if (kid) |
5670 | kid = kid->op_sibling; /* get past "big" */ | |
79072805 | 5671 | if (kid && kid->op_type == OP_CONST) |
2779dcf1 | 5672 | fbm_compile(((SVOP*)kid)->op_sv, 0); |
79072805 | 5673 | } |
11343788 | 5674 | return ck_fun(o); |
79072805 LW |
5675 | } |
5676 | ||
5677 | OP * | |
cea2e8a9 | 5678 | Perl_ck_lengthconst(pTHX_ OP *o) |
79072805 LW |
5679 | { |
5680 | /* XXX length optimization goes here */ | |
11343788 | 5681 | return ck_fun(o); |
79072805 LW |
5682 | } |
5683 | ||
5684 | OP * | |
cea2e8a9 | 5685 | Perl_ck_lfun(pTHX_ OP *o) |
79072805 | 5686 | { |
6867be6d | 5687 | const OPCODE type = o->op_type; |
5dc0d613 | 5688 | return modkids(ck_fun(o), type); |
79072805 LW |
5689 | } |
5690 | ||
5691 | OP * | |
cea2e8a9 | 5692 | Perl_ck_defined(pTHX_ OP *o) /* 19990527 MJD */ |
69794302 | 5693 | { |
12bcd1a6 | 5694 | if ((o->op_flags & OPf_KIDS) && ckWARN2(WARN_DEPRECATED, WARN_SYNTAX)) { |
d0334bed GS |
5695 | switch (cUNOPo->op_first->op_type) { |
5696 | case OP_RV2AV: | |
a8739d98 JH |
5697 | /* This is needed for |
5698 | if (defined %stash::) | |
5699 | to work. Do not break Tk. | |
5700 | */ | |
1c846c1f | 5701 | break; /* Globals via GV can be undef */ |
d0334bed GS |
5702 | case OP_PADAV: |
5703 | case OP_AASSIGN: /* Is this a good idea? */ | |
12bcd1a6 | 5704 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
f10b0346 | 5705 | "defined(@array) is deprecated"); |
12bcd1a6 | 5706 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
cc507455 | 5707 | "\t(Maybe you should just omit the defined()?)\n"); |
69794302 | 5708 | break; |
d0334bed | 5709 | case OP_RV2HV: |
a8739d98 JH |
5710 | /* This is needed for |
5711 | if (defined %stash::) | |
5712 | to work. Do not break Tk. | |
5713 | */ | |
1c846c1f | 5714 | break; /* Globals via GV can be undef */ |
d0334bed | 5715 | case OP_PADHV: |
12bcd1a6 | 5716 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
894356b3 | 5717 | "defined(%%hash) is deprecated"); |
12bcd1a6 | 5718 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
cc507455 | 5719 | "\t(Maybe you should just omit the defined()?)\n"); |
d0334bed GS |
5720 | break; |
5721 | default: | |
5722 | /* no warning */ | |
5723 | break; | |
5724 | } | |
69794302 MJD |
5725 | } |
5726 | return ck_rfun(o); | |
5727 | } | |
5728 | ||
5729 | OP * | |
cea2e8a9 | 5730 | Perl_ck_rfun(pTHX_ OP *o) |
8990e307 | 5731 | { |
6867be6d | 5732 | const OPCODE type = o->op_type; |
5dc0d613 | 5733 | return refkids(ck_fun(o), type); |
8990e307 LW |
5734 | } |
5735 | ||
5736 | OP * | |
cea2e8a9 | 5737 | Perl_ck_listiob(pTHX_ OP *o) |
79072805 LW |
5738 | { |
5739 | register OP *kid; | |
aeea060c | 5740 | |
11343788 | 5741 | kid = cLISTOPo->op_first; |
79072805 | 5742 | if (!kid) { |
11343788 MB |
5743 | o = force_list(o); |
5744 | kid = cLISTOPo->op_first; | |
79072805 LW |
5745 | } |
5746 | if (kid->op_type == OP_PUSHMARK) | |
5747 | kid = kid->op_sibling; | |
11343788 | 5748 | if (kid && o->op_flags & OPf_STACKED) |
79072805 LW |
5749 | kid = kid->op_sibling; |
5750 | else if (kid && !kid->op_sibling) { /* print HANDLE; */ | |
5751 | if (kid->op_type == OP_CONST && kid->op_private & OPpCONST_BARE) { | |
11343788 | 5752 | o->op_flags |= OPf_STACKED; /* make it a filehandle */ |
748a9306 | 5753 | kid = newUNOP(OP_RV2GV, OPf_REF, scalar(kid)); |
11343788 MB |
5754 | cLISTOPo->op_first->op_sibling = kid; |
5755 | cLISTOPo->op_last = kid; | |
79072805 LW |
5756 | kid = kid->op_sibling; |
5757 | } | |
5758 | } | |
b2ffa427 | 5759 | |
79072805 | 5760 | if (!kid) |
54b9620d | 5761 | append_elem(o->op_type, o, newDEFSVOP()); |
79072805 | 5762 | |
2de3dbcc | 5763 | return listkids(o); |
bbce6d69 | 5764 | } |
5765 | ||
5766 | OP * | |
b162f9ea IZ |
5767 | Perl_ck_sassign(pTHX_ OP *o) |
5768 | { | |
5769 | OP *kid = cLISTOPo->op_first; | |
5770 | /* has a disposable target? */ | |
5771 | if ((PL_opargs[kid->op_type] & OA_TARGLEX) | |
6b66af17 GS |
5772 | && !(kid->op_flags & OPf_STACKED) |
5773 | /* Cannot steal the second time! */ | |
5774 | && !(kid->op_private & OPpTARGET_MY)) | |
b162f9ea IZ |
5775 | { |
5776 | OP *kkid = kid->op_sibling; | |
5777 | ||
5778 | /* Can just relocate the target. */ | |
2c2d71f5 JH |
5779 | if (kkid && kkid->op_type == OP_PADSV |
5780 | && !(kkid->op_private & OPpLVAL_INTRO)) | |
5781 | { | |
b162f9ea | 5782 | kid->op_targ = kkid->op_targ; |
743e66e6 | 5783 | kkid->op_targ = 0; |
b162f9ea IZ |
5784 | /* Now we do not need PADSV and SASSIGN. */ |
5785 | kid->op_sibling = o->op_sibling; /* NULL */ | |
5786 | cLISTOPo->op_first = NULL; | |
5787 | op_free(o); | |
5788 | op_free(kkid); | |
5789 | kid->op_private |= OPpTARGET_MY; /* Used for context settings */ | |
5790 | return kid; | |
5791 | } | |
5792 | } | |
b9d46b39 RGS |
5793 | /* optimise C<my $x = undef> to C<my $x> */ |
5794 | if (kid->op_type == OP_UNDEF) { | |
5795 | OP *kkid = kid->op_sibling; | |
5796 | if (kkid && kkid->op_type == OP_PADSV | |
5797 | && (kkid->op_private & OPpLVAL_INTRO)) | |
5798 | { | |
5799 | cLISTOPo->op_first = NULL; | |
5800 | kid->op_sibling = NULL; | |
5801 | op_free(o); | |
5802 | op_free(kid); | |
5803 | return kkid; | |
5804 | } | |
5805 | } | |
b162f9ea IZ |
5806 | return o; |
5807 | } | |
5808 | ||
5809 | OP * | |
cea2e8a9 | 5810 | Perl_ck_match(pTHX_ OP *o) |
79072805 | 5811 | { |
59f00321 | 5812 | if (o->op_type != OP_QR) { |
6867be6d | 5813 | const I32 offset = pad_findmy("$_"); |
59f00321 RGS |
5814 | if (offset != NOT_IN_PAD && !(PAD_COMPNAME_FLAGS(offset) & SVpad_OUR)) { |
5815 | o->op_targ = offset; | |
5816 | o->op_private |= OPpTARGET_MY; | |
5817 | } | |
5818 | } | |
5819 | if (o->op_type == OP_MATCH || o->op_type == OP_QR) | |
5820 | o->op_private |= OPpRUNTIME; | |
11343788 | 5821 | return o; |
79072805 LW |
5822 | } |
5823 | ||
5824 | OP * | |
f5d5a27c CS |
5825 | Perl_ck_method(pTHX_ OP *o) |
5826 | { | |
5827 | OP *kid = cUNOPo->op_first; | |
5828 | if (kid->op_type == OP_CONST) { | |
5829 | SV* sv = kSVOP->op_sv; | |
b15aece3 | 5830 | if (!(strchr(SvPVX_const(sv), ':') || strchr(SvPVX_const(sv), '\''))) { |
f5d5a27c | 5831 | OP *cmop; |
1c846c1f | 5832 | if (!SvREADONLY(sv) || !SvFAKE(sv)) { |
b15aece3 | 5833 | sv = newSVpvn_share(SvPVX_const(sv), SvCUR(sv), 0); |
1c846c1f NIS |
5834 | } |
5835 | else { | |
5836 | kSVOP->op_sv = Nullsv; | |
5837 | } | |
f5d5a27c | 5838 | cmop = newSVOP(OP_METHOD_NAMED, 0, sv); |
f5d5a27c CS |
5839 | op_free(o); |
5840 | return cmop; | |
5841 | } | |
5842 | } | |
5843 | return o; | |
5844 | } | |
5845 | ||
5846 | OP * | |
cea2e8a9 | 5847 | Perl_ck_null(pTHX_ OP *o) |
79072805 | 5848 | { |
11343788 | 5849 | return o; |
79072805 LW |
5850 | } |
5851 | ||
5852 | OP * | |
16fe6d59 GS |
5853 | Perl_ck_open(pTHX_ OP *o) |
5854 | { | |
5855 | HV *table = GvHV(PL_hintgv); | |
5856 | if (table) { | |
5857 | SV **svp; | |
5858 | I32 mode; | |
5859 | svp = hv_fetch(table, "open_IN", 7, FALSE); | |
5860 | if (svp && *svp) { | |
5861 | mode = mode_from_discipline(*svp); | |
5862 | if (mode & O_BINARY) | |
5863 | o->op_private |= OPpOPEN_IN_RAW; | |
5864 | else if (mode & O_TEXT) | |
5865 | o->op_private |= OPpOPEN_IN_CRLF; | |
5866 | } | |
5867 | ||
5868 | svp = hv_fetch(table, "open_OUT", 8, FALSE); | |
5869 | if (svp && *svp) { | |
5870 | mode = mode_from_discipline(*svp); | |
5871 | if (mode & O_BINARY) | |
5872 | o->op_private |= OPpOPEN_OUT_RAW; | |
5873 | else if (mode & O_TEXT) | |
5874 | o->op_private |= OPpOPEN_OUT_CRLF; | |
5875 | } | |
5876 | } | |
5877 | if (o->op_type == OP_BACKTICK) | |
5878 | return o; | |
3b82e551 JH |
5879 | { |
5880 | /* In case of three-arg dup open remove strictness | |
5881 | * from the last arg if it is a bareword. */ | |
5882 | OP *first = cLISTOPx(o)->op_first; /* The pushmark. */ | |
5883 | OP *last = cLISTOPx(o)->op_last; /* The bareword. */ | |
5884 | OP *oa; | |
b15aece3 | 5885 | const char *mode; |
3b82e551 JH |
5886 | |
5887 | if ((last->op_type == OP_CONST) && /* The bareword. */ | |
5888 | (last->op_private & OPpCONST_BARE) && | |
5889 | (last->op_private & OPpCONST_STRICT) && | |
5890 | (oa = first->op_sibling) && /* The fh. */ | |
5891 | (oa = oa->op_sibling) && /* The mode. */ | |
5892 | SvPOK(((SVOP*)oa)->op_sv) && | |
b15aece3 | 5893 | (mode = SvPVX_const(((SVOP*)oa)->op_sv)) && |
3b82e551 JH |
5894 | mode[0] == '>' && mode[1] == '&' && /* A dup open. */ |
5895 | (last == oa->op_sibling)) /* The bareword. */ | |
5896 | last->op_private &= ~OPpCONST_STRICT; | |
5897 | } | |
16fe6d59 GS |
5898 | return ck_fun(o); |
5899 | } | |
5900 | ||
5901 | OP * | |
cea2e8a9 | 5902 | Perl_ck_repeat(pTHX_ OP *o) |
79072805 | 5903 | { |
11343788 MB |
5904 | if (cBINOPo->op_first->op_flags & OPf_PARENS) { |
5905 | o->op_private |= OPpREPEAT_DOLIST; | |
5906 | cBINOPo->op_first = force_list(cBINOPo->op_first); | |
79072805 LW |
5907 | } |
5908 | else | |
11343788 MB |
5909 | scalar(o); |
5910 | return o; | |
79072805 LW |
5911 | } |
5912 | ||
5913 | OP * | |
cea2e8a9 | 5914 | Perl_ck_require(pTHX_ OP *o) |
8990e307 | 5915 | { |
ec4ab249 GA |
5916 | GV* gv; |
5917 | ||
11343788 MB |
5918 | if (o->op_flags & OPf_KIDS) { /* Shall we supply missing .pm? */ |
5919 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
8990e307 LW |
5920 | |
5921 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
5c144d81 NC |
5922 | SV *sv = kid->op_sv; |
5923 | U32 was_readonly = SvREADONLY(sv); | |
8990e307 | 5924 | char *s; |
5c144d81 NC |
5925 | |
5926 | if (was_readonly) { | |
5927 | if (SvFAKE(sv)) { | |
5928 | sv_force_normal_flags(sv, 0); | |
5929 | assert(!SvREADONLY(sv)); | |
5930 | was_readonly = 0; | |
5931 | } else { | |
5932 | SvREADONLY_off(sv); | |
5933 | } | |
5934 | } | |
5935 | ||
5936 | for (s = SvPVX(sv); *s; s++) { | |
a0d0e21e LW |
5937 | if (*s == ':' && s[1] == ':') { |
5938 | *s = '/'; | |
1aef975c | 5939 | Move(s+2, s+1, strlen(s+2)+1, char); |
5c144d81 | 5940 | SvCUR_set(sv, SvCUR(sv) - 1); |
a0d0e21e | 5941 | } |
8990e307 | 5942 | } |
5c144d81 NC |
5943 | sv_catpvn(sv, ".pm", 3); |
5944 | SvFLAGS(sv) |= was_readonly; | |
8990e307 LW |
5945 | } |
5946 | } | |
ec4ab249 GA |
5947 | |
5948 | /* handle override, if any */ | |
5949 | gv = gv_fetchpv("require", FALSE, SVt_PVCV); | |
b9f751c0 | 5950 | if (!(gv && GvCVu(gv) && GvIMPORTED_CV(gv))) |
ec4ab249 GA |
5951 | gv = gv_fetchpv("CORE::GLOBAL::require", FALSE, SVt_PVCV); |
5952 | ||
b9f751c0 | 5953 | if (gv && GvCVu(gv) && GvIMPORTED_CV(gv)) { |
ec4ab249 GA |
5954 | OP *kid = cUNOPo->op_first; |
5955 | cUNOPo->op_first = 0; | |
5956 | op_free(o); | |
5957 | return ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, | |
5958 | append_elem(OP_LIST, kid, | |
5959 | scalar(newUNOP(OP_RV2CV, 0, | |
5960 | newGVOP(OP_GV, 0, | |
5961 | gv)))))); | |
5962 | } | |
5963 | ||
11343788 | 5964 | return ck_fun(o); |
8990e307 LW |
5965 | } |
5966 | ||
78f9721b SM |
5967 | OP * |
5968 | Perl_ck_return(pTHX_ OP *o) | |
5969 | { | |
78f9721b | 5970 | if (CvLVALUE(PL_compcv)) { |
6867be6d | 5971 | OP *kid; |
78f9721b SM |
5972 | for (kid = cLISTOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
5973 | mod(kid, OP_LEAVESUBLV); | |
5974 | } | |
5975 | return o; | |
5976 | } | |
5977 | ||
22c35a8c | 5978 | #if 0 |
8990e307 | 5979 | OP * |
cea2e8a9 | 5980 | Perl_ck_retarget(pTHX_ OP *o) |
79072805 | 5981 | { |
cea2e8a9 | 5982 | Perl_croak(aTHX_ "NOT IMPL LINE %d",__LINE__); |
79072805 | 5983 | /* STUB */ |
11343788 | 5984 | return o; |
79072805 | 5985 | } |
22c35a8c | 5986 | #endif |
79072805 LW |
5987 | |
5988 | OP * | |
cea2e8a9 | 5989 | Perl_ck_select(pTHX_ OP *o) |
79072805 | 5990 | { |
27da23d5 | 5991 | dVAR; |
c07a80fd | 5992 | OP* kid; |
11343788 MB |
5993 | if (o->op_flags & OPf_KIDS) { |
5994 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
2304df62 | 5995 | if (kid && kid->op_sibling) { |
11343788 | 5996 | o->op_type = OP_SSELECT; |
22c35a8c | 5997 | o->op_ppaddr = PL_ppaddr[OP_SSELECT]; |
11343788 MB |
5998 | o = ck_fun(o); |
5999 | return fold_constants(o); | |
79072805 LW |
6000 | } |
6001 | } | |
11343788 MB |
6002 | o = ck_fun(o); |
6003 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
c07a80fd | 6004 | if (kid && kid->op_type == OP_RV2GV) |
6005 | kid->op_private &= ~HINT_STRICT_REFS; | |
11343788 | 6006 | return o; |
79072805 LW |
6007 | } |
6008 | ||
6009 | OP * | |
cea2e8a9 | 6010 | Perl_ck_shift(pTHX_ OP *o) |
79072805 | 6011 | { |
6867be6d | 6012 | const I32 type = o->op_type; |
79072805 | 6013 | |
11343788 | 6014 | if (!(o->op_flags & OPf_KIDS)) { |
6d4ff0d2 | 6015 | OP *argop; |
b2ffa427 | 6016 | |
11343788 | 6017 | op_free(o); |
6d4ff0d2 | 6018 | argop = newUNOP(OP_RV2AV, 0, |
8fde6460 | 6019 | scalar(newGVOP(OP_GV, 0, CvUNIQUE(PL_compcv) ? PL_argvgv : PL_defgv))); |
6d4ff0d2 | 6020 | return newUNOP(type, 0, scalar(argop)); |
79072805 | 6021 | } |
11343788 | 6022 | return scalar(modkids(ck_fun(o), type)); |
79072805 LW |
6023 | } |
6024 | ||
6025 | OP * | |
cea2e8a9 | 6026 | Perl_ck_sort(pTHX_ OP *o) |
79072805 | 6027 | { |
8e3f9bdf | 6028 | OP *firstkid; |
bbce6d69 | 6029 | |
9ea6e965 | 6030 | if (o->op_type == OP_SORT && o->op_flags & OPf_STACKED) |
51a19bc0 | 6031 | simplify_sort(o); |
8e3f9bdf GS |
6032 | firstkid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
6033 | if (o->op_flags & OPf_STACKED) { /* may have been cleared */ | |
9c5ffd7c | 6034 | OP *k = NULL; |
8e3f9bdf | 6035 | OP *kid = cUNOPx(firstkid)->op_first; /* get past null */ |
79072805 | 6036 | |
463ee0b2 | 6037 | if (kid->op_type == OP_SCOPE || kid->op_type == OP_LEAVE) { |
79072805 | 6038 | linklist(kid); |
463ee0b2 LW |
6039 | if (kid->op_type == OP_SCOPE) { |
6040 | k = kid->op_next; | |
6041 | kid->op_next = 0; | |
79072805 | 6042 | } |
463ee0b2 | 6043 | else if (kid->op_type == OP_LEAVE) { |
11343788 | 6044 | if (o->op_type == OP_SORT) { |
93c66552 | 6045 | op_null(kid); /* wipe out leave */ |
748a9306 | 6046 | kid->op_next = kid; |
463ee0b2 | 6047 | |
748a9306 LW |
6048 | for (k = kLISTOP->op_first->op_next; k; k = k->op_next) { |
6049 | if (k->op_next == kid) | |
6050 | k->op_next = 0; | |
71a29c3c GS |
6051 | /* don't descend into loops */ |
6052 | else if (k->op_type == OP_ENTERLOOP | |
6053 | || k->op_type == OP_ENTERITER) | |
6054 | { | |
6055 | k = cLOOPx(k)->op_lastop; | |
6056 | } | |
748a9306 | 6057 | } |
463ee0b2 | 6058 | } |
748a9306 LW |
6059 | else |
6060 | kid->op_next = 0; /* just disconnect the leave */ | |
a0d0e21e | 6061 | k = kLISTOP->op_first; |
463ee0b2 | 6062 | } |
a2efc822 | 6063 | CALL_PEEP(k); |
a0d0e21e | 6064 | |
8e3f9bdf GS |
6065 | kid = firstkid; |
6066 | if (o->op_type == OP_SORT) { | |
6067 | /* provide scalar context for comparison function/block */ | |
6068 | kid = scalar(kid); | |
a0d0e21e | 6069 | kid->op_next = kid; |
8e3f9bdf | 6070 | } |
a0d0e21e LW |
6071 | else |
6072 | kid->op_next = k; | |
11343788 | 6073 | o->op_flags |= OPf_SPECIAL; |
79072805 | 6074 | } |
c6e96bcb | 6075 | else if (kid->op_type == OP_RV2SV || kid->op_type == OP_PADSV) |
93c66552 | 6076 | op_null(firstkid); |
8e3f9bdf GS |
6077 | |
6078 | firstkid = firstkid->op_sibling; | |
79072805 | 6079 | } |
bbce6d69 | 6080 | |
8e3f9bdf GS |
6081 | /* provide list context for arguments */ |
6082 | if (o->op_type == OP_SORT) | |
6083 | list(firstkid); | |
6084 | ||
11343788 | 6085 | return o; |
79072805 | 6086 | } |
bda4119b GS |
6087 | |
6088 | STATIC void | |
cea2e8a9 | 6089 | S_simplify_sort(pTHX_ OP *o) |
9c007264 JH |
6090 | { |
6091 | register OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
6092 | OP *k; | |
eb209983 | 6093 | int descending; |
350de78d | 6094 | GV *gv; |
770526c1 | 6095 | const char *gvname; |
9c007264 JH |
6096 | if (!(o->op_flags & OPf_STACKED)) |
6097 | return; | |
1c846c1f NIS |
6098 | GvMULTI_on(gv_fetchpv("a", TRUE, SVt_PV)); |
6099 | GvMULTI_on(gv_fetchpv("b", TRUE, SVt_PV)); | |
82092f1d | 6100 | kid = kUNOP->op_first; /* get past null */ |
9c007264 JH |
6101 | if (kid->op_type != OP_SCOPE) |
6102 | return; | |
6103 | kid = kLISTOP->op_last; /* get past scope */ | |
6104 | switch(kid->op_type) { | |
6105 | case OP_NCMP: | |
6106 | case OP_I_NCMP: | |
6107 | case OP_SCMP: | |
6108 | break; | |
6109 | default: | |
6110 | return; | |
6111 | } | |
6112 | k = kid; /* remember this node*/ | |
6113 | if (kBINOP->op_first->op_type != OP_RV2SV) | |
6114 | return; | |
6115 | kid = kBINOP->op_first; /* get past cmp */ | |
6116 | if (kUNOP->op_first->op_type != OP_GV) | |
6117 | return; | |
6118 | kid = kUNOP->op_first; /* get past rv2sv */ | |
638eceb6 | 6119 | gv = kGVOP_gv; |
350de78d | 6120 | if (GvSTASH(gv) != PL_curstash) |
9c007264 | 6121 | return; |
770526c1 NC |
6122 | gvname = GvNAME(gv); |
6123 | if (*gvname == 'a' && gvname[1] == '\0') | |
eb209983 | 6124 | descending = 0; |
770526c1 | 6125 | else if (*gvname == 'b' && gvname[1] == '\0') |
eb209983 | 6126 | descending = 1; |
9c007264 JH |
6127 | else |
6128 | return; | |
eb209983 | 6129 | |
9c007264 JH |
6130 | kid = k; /* back to cmp */ |
6131 | if (kBINOP->op_last->op_type != OP_RV2SV) | |
6132 | return; | |
6133 | kid = kBINOP->op_last; /* down to 2nd arg */ | |
6134 | if (kUNOP->op_first->op_type != OP_GV) | |
6135 | return; | |
6136 | kid = kUNOP->op_first; /* get past rv2sv */ | |
638eceb6 | 6137 | gv = kGVOP_gv; |
770526c1 NC |
6138 | if (GvSTASH(gv) != PL_curstash) |
6139 | return; | |
6140 | gvname = GvNAME(gv); | |
6141 | if ( descending | |
6142 | ? !(*gvname == 'a' && gvname[1] == '\0') | |
6143 | : !(*gvname == 'b' && gvname[1] == '\0')) | |
9c007264 JH |
6144 | return; |
6145 | o->op_flags &= ~(OPf_STACKED | OPf_SPECIAL); | |
eb209983 NC |
6146 | if (descending) |
6147 | o->op_private |= OPpSORT_DESCEND; | |
9c007264 JH |
6148 | if (k->op_type == OP_NCMP) |
6149 | o->op_private |= OPpSORT_NUMERIC; | |
6150 | if (k->op_type == OP_I_NCMP) | |
6151 | o->op_private |= OPpSORT_NUMERIC | OPpSORT_INTEGER; | |
e507f050 SM |
6152 | kid = cLISTOPo->op_first->op_sibling; |
6153 | cLISTOPo->op_first->op_sibling = kid->op_sibling; /* bypass old block */ | |
6154 | op_free(kid); /* then delete it */ | |
9c007264 | 6155 | } |
79072805 LW |
6156 | |
6157 | OP * | |
cea2e8a9 | 6158 | Perl_ck_split(pTHX_ OP *o) |
79072805 | 6159 | { |
27da23d5 | 6160 | dVAR; |
79072805 | 6161 | register OP *kid; |
aeea060c | 6162 | |
11343788 MB |
6163 | if (o->op_flags & OPf_STACKED) |
6164 | return no_fh_allowed(o); | |
79072805 | 6165 | |
11343788 | 6166 | kid = cLISTOPo->op_first; |
8990e307 | 6167 | if (kid->op_type != OP_NULL) |
cea2e8a9 | 6168 | Perl_croak(aTHX_ "panic: ck_split"); |
8990e307 | 6169 | kid = kid->op_sibling; |
11343788 MB |
6170 | op_free(cLISTOPo->op_first); |
6171 | cLISTOPo->op_first = kid; | |
85e6fe83 | 6172 | if (!kid) { |
79cb57f6 | 6173 | cLISTOPo->op_first = kid = newSVOP(OP_CONST, 0, newSVpvn(" ", 1)); |
11343788 | 6174 | cLISTOPo->op_last = kid; /* There was only one element previously */ |
85e6fe83 | 6175 | } |
79072805 | 6176 | |
de4bf5b3 | 6177 | if (kid->op_type != OP_MATCH || kid->op_flags & OPf_STACKED) { |
79072805 | 6178 | OP *sibl = kid->op_sibling; |
463ee0b2 | 6179 | kid->op_sibling = 0; |
131b3ad0 | 6180 | kid = pmruntime( newPMOP(OP_MATCH, OPf_SPECIAL), kid, 0); |
11343788 MB |
6181 | if (cLISTOPo->op_first == cLISTOPo->op_last) |
6182 | cLISTOPo->op_last = kid; | |
6183 | cLISTOPo->op_first = kid; | |
79072805 LW |
6184 | kid->op_sibling = sibl; |
6185 | } | |
6186 | ||
6187 | kid->op_type = OP_PUSHRE; | |
22c35a8c | 6188 | kid->op_ppaddr = PL_ppaddr[OP_PUSHRE]; |
79072805 | 6189 | scalar(kid); |
f34840d8 MJD |
6190 | if (ckWARN(WARN_REGEXP) && ((PMOP *)kid)->op_pmflags & PMf_GLOBAL) { |
6191 | Perl_warner(aTHX_ packWARN(WARN_REGEXP), | |
6192 | "Use of /g modifier is meaningless in split"); | |
6193 | } | |
79072805 LW |
6194 | |
6195 | if (!kid->op_sibling) | |
54b9620d | 6196 | append_elem(OP_SPLIT, o, newDEFSVOP()); |
79072805 LW |
6197 | |
6198 | kid = kid->op_sibling; | |
6199 | scalar(kid); | |
6200 | ||
6201 | if (!kid->op_sibling) | |
11343788 | 6202 | append_elem(OP_SPLIT, o, newSVOP(OP_CONST, 0, newSViv(0))); |
79072805 LW |
6203 | |
6204 | kid = kid->op_sibling; | |
6205 | scalar(kid); | |
6206 | ||
6207 | if (kid->op_sibling) | |
53e06cf0 | 6208 | return too_many_arguments(o,OP_DESC(o)); |
79072805 | 6209 | |
11343788 | 6210 | return o; |
79072805 LW |
6211 | } |
6212 | ||
6213 | OP * | |
1c846c1f | 6214 | Perl_ck_join(pTHX_ OP *o) |
eb6e2d6f GS |
6215 | { |
6216 | if (ckWARN(WARN_SYNTAX)) { | |
6867be6d | 6217 | const OP *kid = cLISTOPo->op_first->op_sibling; |
eb6e2d6f | 6218 | if (kid && kid->op_type == OP_MATCH) { |
6867be6d AL |
6219 | const REGEXP *re = PM_GETRE(kPMOP); |
6220 | const char *pmstr = re ? re->precomp : "STRING"; | |
9014280d | 6221 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
eb6e2d6f GS |
6222 | "/%s/ should probably be written as \"%s\"", |
6223 | pmstr, pmstr); | |
6224 | } | |
6225 | } | |
6226 | return ck_fun(o); | |
6227 | } | |
6228 | ||
6229 | OP * | |
cea2e8a9 | 6230 | Perl_ck_subr(pTHX_ OP *o) |
79072805 | 6231 | { |
11343788 MB |
6232 | OP *prev = ((cUNOPo->op_first->op_sibling) |
6233 | ? cUNOPo : ((UNOP*)cUNOPo->op_first))->op_first; | |
6234 | OP *o2 = prev->op_sibling; | |
4633a7c4 LW |
6235 | OP *cvop; |
6236 | char *proto = 0; | |
6237 | CV *cv = 0; | |
46fc3d4c | 6238 | GV *namegv = 0; |
4633a7c4 LW |
6239 | int optional = 0; |
6240 | I32 arg = 0; | |
5b794e05 | 6241 | I32 contextclass = 0; |
90b7f708 | 6242 | char *e = 0; |
0723351e | 6243 | bool delete_op = 0; |
4633a7c4 | 6244 | |
d3011074 | 6245 | o->op_private |= OPpENTERSUB_HASTARG; |
11343788 | 6246 | for (cvop = o2; cvop->op_sibling; cvop = cvop->op_sibling) ; |
4633a7c4 LW |
6247 | if (cvop->op_type == OP_RV2CV) { |
6248 | SVOP* tmpop; | |
11343788 | 6249 | o->op_private |= (cvop->op_private & OPpENTERSUB_AMPER); |
93c66552 | 6250 | op_null(cvop); /* disable rv2cv */ |
4633a7c4 | 6251 | tmpop = (SVOP*)((UNOP*)cvop)->op_first; |
76cd736e | 6252 | if (tmpop->op_type == OP_GV && !(o->op_private & OPpENTERSUB_AMPER)) { |
638eceb6 | 6253 | GV *gv = cGVOPx_gv(tmpop); |
350de78d | 6254 | cv = GvCVu(gv); |
76cd736e GS |
6255 | if (!cv) |
6256 | tmpop->op_private |= OPpEARLY_CV; | |
06492da6 SF |
6257 | else { |
6258 | if (SvPOK(cv)) { | |
6259 | namegv = CvANON(cv) ? gv : CvGV(cv); | |
8b6b16e7 | 6260 | proto = SvPV_nolen((SV*)cv); |
06492da6 SF |
6261 | } |
6262 | if (CvASSERTION(cv)) { | |
6263 | if (PL_hints & HINT_ASSERTING) { | |
6264 | if (PERLDB_ASSERTION && PL_curstash != PL_debstash) | |
6265 | o->op_private |= OPpENTERSUB_DB; | |
6266 | } | |
8fa7688f | 6267 | else { |
0723351e | 6268 | delete_op = 1; |
8fa7688f SF |
6269 | if (ckWARN(WARN_ASSERTIONS) && !(PL_hints & HINT_ASSERTIONSSEEN)) { |
6270 | Perl_warner(aTHX_ packWARN(WARN_ASSERTIONS), | |
6271 | "Impossible to activate assertion call"); | |
6272 | } | |
6273 | } | |
06492da6 | 6274 | } |
46fc3d4c | 6275 | } |
4633a7c4 LW |
6276 | } |
6277 | } | |
f5d5a27c | 6278 | else if (cvop->op_type == OP_METHOD || cvop->op_type == OP_METHOD_NAMED) { |
7a52d87a GS |
6279 | if (o2->op_type == OP_CONST) |
6280 | o2->op_private &= ~OPpCONST_STRICT; | |
58a40671 GS |
6281 | else if (o2->op_type == OP_LIST) { |
6282 | OP *o = ((UNOP*)o2)->op_first->op_sibling; | |
6283 | if (o && o->op_type == OP_CONST) | |
6284 | o->op_private &= ~OPpCONST_STRICT; | |
6285 | } | |
7a52d87a | 6286 | } |
3280af22 NIS |
6287 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
6288 | if (PERLDB_SUB && PL_curstash != PL_debstash) | |
11343788 MB |
6289 | o->op_private |= OPpENTERSUB_DB; |
6290 | while (o2 != cvop) { | |
4633a7c4 LW |
6291 | if (proto) { |
6292 | switch (*proto) { | |
6293 | case '\0': | |
5dc0d613 | 6294 | return too_many_arguments(o, gv_ename(namegv)); |
4633a7c4 LW |
6295 | case ';': |
6296 | optional = 1; | |
6297 | proto++; | |
6298 | continue; | |
6299 | case '$': | |
6300 | proto++; | |
6301 | arg++; | |
11343788 | 6302 | scalar(o2); |
4633a7c4 LW |
6303 | break; |
6304 | case '%': | |
6305 | case '@': | |
11343788 | 6306 | list(o2); |
4633a7c4 LW |
6307 | arg++; |
6308 | break; | |
6309 | case '&': | |
6310 | proto++; | |
6311 | arg++; | |
11343788 | 6312 | if (o2->op_type != OP_REFGEN && o2->op_type != OP_UNDEF) |
75fc29ea GS |
6313 | bad_type(arg, |
6314 | arg == 1 ? "block or sub {}" : "sub {}", | |
6315 | gv_ename(namegv), o2); | |
4633a7c4 LW |
6316 | break; |
6317 | case '*': | |
2ba6ecf4 | 6318 | /* '*' allows any scalar type, including bareword */ |
4633a7c4 LW |
6319 | proto++; |
6320 | arg++; | |
11343788 | 6321 | if (o2->op_type == OP_RV2GV) |
2ba6ecf4 | 6322 | goto wrapref; /* autoconvert GLOB -> GLOBref */ |
7a52d87a GS |
6323 | else if (o2->op_type == OP_CONST) |
6324 | o2->op_private &= ~OPpCONST_STRICT; | |
9675f7ac GS |
6325 | else if (o2->op_type == OP_ENTERSUB) { |
6326 | /* accidental subroutine, revert to bareword */ | |
6327 | OP *gvop = ((UNOP*)o2)->op_first; | |
6328 | if (gvop && gvop->op_type == OP_NULL) { | |
6329 | gvop = ((UNOP*)gvop)->op_first; | |
6330 | if (gvop) { | |
6331 | for (; gvop->op_sibling; gvop = gvop->op_sibling) | |
6332 | ; | |
6333 | if (gvop && | |
6334 | (gvop->op_private & OPpENTERSUB_NOPAREN) && | |
6335 | (gvop = ((UNOP*)gvop)->op_first) && | |
6336 | gvop->op_type == OP_GV) | |
6337 | { | |
638eceb6 | 6338 | GV *gv = cGVOPx_gv(gvop); |
9675f7ac | 6339 | OP *sibling = o2->op_sibling; |
2692f720 | 6340 | SV *n = newSVpvn("",0); |
9675f7ac | 6341 | op_free(o2); |
2a797ae2 | 6342 | gv_fullname4(n, gv, "", FALSE); |
2692f720 | 6343 | o2 = newSVOP(OP_CONST, 0, n); |
9675f7ac GS |
6344 | prev->op_sibling = o2; |
6345 | o2->op_sibling = sibling; | |
6346 | } | |
6347 | } | |
6348 | } | |
6349 | } | |
2ba6ecf4 GS |
6350 | scalar(o2); |
6351 | break; | |
5b794e05 JH |
6352 | case '[': case ']': |
6353 | goto oops; | |
6354 | break; | |
4633a7c4 LW |
6355 | case '\\': |
6356 | proto++; | |
6357 | arg++; | |
5b794e05 | 6358 | again: |
4633a7c4 | 6359 | switch (*proto++) { |
5b794e05 JH |
6360 | case '[': |
6361 | if (contextclass++ == 0) { | |
841d93c8 | 6362 | e = strchr(proto, ']'); |
5b794e05 JH |
6363 | if (!e || e == proto) |
6364 | goto oops; | |
6365 | } | |
6366 | else | |
6367 | goto oops; | |
6368 | goto again; | |
6369 | break; | |
6370 | case ']': | |
466bafcd | 6371 | if (contextclass) { |
6867be6d AL |
6372 | char *p = proto; |
6373 | const char s = *p; | |
466bafcd RGS |
6374 | contextclass = 0; |
6375 | *p = '\0'; | |
6376 | while (*--p != '['); | |
1eb1540c | 6377 | bad_type(arg, Perl_form(aTHX_ "one of %s", p), |
466bafcd RGS |
6378 | gv_ename(namegv), o2); |
6379 | *proto = s; | |
6380 | } else | |
5b794e05 JH |
6381 | goto oops; |
6382 | break; | |
4633a7c4 | 6383 | case '*': |
5b794e05 JH |
6384 | if (o2->op_type == OP_RV2GV) |
6385 | goto wrapref; | |
6386 | if (!contextclass) | |
6387 | bad_type(arg, "symbol", gv_ename(namegv), o2); | |
6388 | break; | |
4633a7c4 | 6389 | case '&': |
5b794e05 JH |
6390 | if (o2->op_type == OP_ENTERSUB) |
6391 | goto wrapref; | |
6392 | if (!contextclass) | |
6393 | bad_type(arg, "subroutine entry", gv_ename(namegv), o2); | |
6394 | break; | |
4633a7c4 | 6395 | case '$': |
5b794e05 JH |
6396 | if (o2->op_type == OP_RV2SV || |
6397 | o2->op_type == OP_PADSV || | |
6398 | o2->op_type == OP_HELEM || | |
6399 | o2->op_type == OP_AELEM || | |
6400 | o2->op_type == OP_THREADSV) | |
6401 | goto wrapref; | |
6402 | if (!contextclass) | |
5dc0d613 | 6403 | bad_type(arg, "scalar", gv_ename(namegv), o2); |
5b794e05 | 6404 | break; |
4633a7c4 | 6405 | case '@': |
5b794e05 JH |
6406 | if (o2->op_type == OP_RV2AV || |
6407 | o2->op_type == OP_PADAV) | |
6408 | goto wrapref; | |
6409 | if (!contextclass) | |
5dc0d613 | 6410 | bad_type(arg, "array", gv_ename(namegv), o2); |
5b794e05 | 6411 | break; |
4633a7c4 | 6412 | case '%': |
5b794e05 JH |
6413 | if (o2->op_type == OP_RV2HV || |
6414 | o2->op_type == OP_PADHV) | |
6415 | goto wrapref; | |
6416 | if (!contextclass) | |
6417 | bad_type(arg, "hash", gv_ename(namegv), o2); | |
6418 | break; | |
6419 | wrapref: | |
4633a7c4 | 6420 | { |
11343788 | 6421 | OP* kid = o2; |
6fa846a0 | 6422 | OP* sib = kid->op_sibling; |
4633a7c4 | 6423 | kid->op_sibling = 0; |
6fa846a0 GS |
6424 | o2 = newUNOP(OP_REFGEN, 0, kid); |
6425 | o2->op_sibling = sib; | |
e858de61 | 6426 | prev->op_sibling = o2; |
4633a7c4 | 6427 | } |
841d93c8 | 6428 | if (contextclass && e) { |
5b794e05 JH |
6429 | proto = e + 1; |
6430 | contextclass = 0; | |
6431 | } | |
4633a7c4 LW |
6432 | break; |
6433 | default: goto oops; | |
6434 | } | |
5b794e05 JH |
6435 | if (contextclass) |
6436 | goto again; | |
4633a7c4 | 6437 | break; |
b1cb66bf | 6438 | case ' ': |
6439 | proto++; | |
6440 | continue; | |
4633a7c4 LW |
6441 | default: |
6442 | oops: | |
35c1215d NC |
6443 | Perl_croak(aTHX_ "Malformed prototype for %s: %"SVf, |
6444 | gv_ename(namegv), cv); | |
4633a7c4 LW |
6445 | } |
6446 | } | |
6447 | else | |
11343788 MB |
6448 | list(o2); |
6449 | mod(o2, OP_ENTERSUB); | |
6450 | prev = o2; | |
6451 | o2 = o2->op_sibling; | |
4633a7c4 | 6452 | } |
fb73857a | 6453 | if (proto && !optional && |
6454 | (*proto && *proto != '@' && *proto != '%' && *proto != ';')) | |
5dc0d613 | 6455 | return too_few_arguments(o, gv_ename(namegv)); |
0723351e | 6456 | if(delete_op) { |
06492da6 SF |
6457 | op_free(o); |
6458 | o=newSVOP(OP_CONST, 0, newSViv(0)); | |
6459 | } | |
11343788 | 6460 | return o; |
79072805 LW |
6461 | } |
6462 | ||
6463 | OP * | |
cea2e8a9 | 6464 | Perl_ck_svconst(pTHX_ OP *o) |
8990e307 | 6465 | { |
11343788 MB |
6466 | SvREADONLY_on(cSVOPo->op_sv); |
6467 | return o; | |
8990e307 LW |
6468 | } |
6469 | ||
6470 | OP * | |
cea2e8a9 | 6471 | Perl_ck_trunc(pTHX_ OP *o) |
79072805 | 6472 | { |
11343788 MB |
6473 | if (o->op_flags & OPf_KIDS) { |
6474 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 | 6475 | |
a0d0e21e LW |
6476 | if (kid->op_type == OP_NULL) |
6477 | kid = (SVOP*)kid->op_sibling; | |
bb53490d GS |
6478 | if (kid && kid->op_type == OP_CONST && |
6479 | (kid->op_private & OPpCONST_BARE)) | |
6480 | { | |
11343788 | 6481 | o->op_flags |= OPf_SPECIAL; |
bb53490d GS |
6482 | kid->op_private &= ~OPpCONST_STRICT; |
6483 | } | |
79072805 | 6484 | } |
11343788 | 6485 | return ck_fun(o); |
79072805 LW |
6486 | } |
6487 | ||
35fba0d9 | 6488 | OP * |
bab9c0ac RGS |
6489 | Perl_ck_unpack(pTHX_ OP *o) |
6490 | { | |
6491 | OP *kid = cLISTOPo->op_first; | |
6492 | if (kid->op_sibling) { | |
6493 | kid = kid->op_sibling; | |
6494 | if (!kid->op_sibling) | |
6495 | kid->op_sibling = newDEFSVOP(); | |
6496 | } | |
6497 | return ck_fun(o); | |
6498 | } | |
6499 | ||
6500 | OP * | |
35fba0d9 RG |
6501 | Perl_ck_substr(pTHX_ OP *o) |
6502 | { | |
6503 | o = ck_fun(o); | |
6504 | if ((o->op_flags & OPf_KIDS) && o->op_private == 4) { | |
6505 | OP *kid = cLISTOPo->op_first; | |
6506 | ||
6507 | if (kid->op_type == OP_NULL) | |
6508 | kid = kid->op_sibling; | |
6509 | if (kid) | |
6510 | kid->op_flags |= OPf_MOD; | |
6511 | ||
6512 | } | |
6513 | return o; | |
6514 | } | |
6515 | ||
61b743bb DM |
6516 | /* A peephole optimizer. We visit the ops in the order they're to execute. |
6517 | * See the comments at the top of this file for more details about when | |
6518 | * peep() is called */ | |
463ee0b2 | 6519 | |
79072805 | 6520 | void |
864dbfa3 | 6521 | Perl_peep(pTHX_ register OP *o) |
79072805 | 6522 | { |
27da23d5 | 6523 | dVAR; |
79072805 | 6524 | register OP* oldop = 0; |
2d8e6c8d | 6525 | |
2814eb74 | 6526 | if (!o || o->op_opt) |
79072805 | 6527 | return; |
a0d0e21e | 6528 | ENTER; |
462e5cf6 | 6529 | SAVEOP(); |
7766f137 | 6530 | SAVEVPTR(PL_curcop); |
a0d0e21e | 6531 | for (; o; o = o->op_next) { |
2814eb74 | 6532 | if (o->op_opt) |
a0d0e21e | 6533 | break; |
533c011a | 6534 | PL_op = o; |
a0d0e21e | 6535 | switch (o->op_type) { |
acb36ea4 | 6536 | case OP_SETSTATE: |
a0d0e21e LW |
6537 | case OP_NEXTSTATE: |
6538 | case OP_DBSTATE: | |
3280af22 | 6539 | PL_curcop = ((COP*)o); /* for warnings */ |
2814eb74 | 6540 | o->op_opt = 1; |
a0d0e21e LW |
6541 | break; |
6542 | ||
a0d0e21e | 6543 | case OP_CONST: |
7a52d87a GS |
6544 | if (cSVOPo->op_private & OPpCONST_STRICT) |
6545 | no_bareword_allowed(o); | |
7766f137 | 6546 | #ifdef USE_ITHREADS |
3848b962 | 6547 | case OP_METHOD_NAMED: |
7766f137 GS |
6548 | /* Relocate sv to the pad for thread safety. |
6549 | * Despite being a "constant", the SV is written to, | |
6550 | * for reference counts, sv_upgrade() etc. */ | |
6551 | if (cSVOP->op_sv) { | |
6867be6d | 6552 | const PADOFFSET ix = pad_alloc(OP_CONST, SVs_PADTMP); |
330e22d5 | 6553 | if (o->op_type == OP_CONST && SvPADTMP(cSVOPo->op_sv)) { |
6a7129a1 | 6554 | /* If op_sv is already a PADTMP then it is being used by |
9a049f1c | 6555 | * some pad, so make a copy. */ |
dd2155a4 DM |
6556 | sv_setsv(PAD_SVl(ix),cSVOPo->op_sv); |
6557 | SvREADONLY_on(PAD_SVl(ix)); | |
6a7129a1 GS |
6558 | SvREFCNT_dec(cSVOPo->op_sv); |
6559 | } | |
6560 | else { | |
dd2155a4 | 6561 | SvREFCNT_dec(PAD_SVl(ix)); |
6a7129a1 | 6562 | SvPADTMP_on(cSVOPo->op_sv); |
dd2155a4 | 6563 | PAD_SETSV(ix, cSVOPo->op_sv); |
9a049f1c | 6564 | /* XXX I don't know how this isn't readonly already. */ |
dd2155a4 | 6565 | SvREADONLY_on(PAD_SVl(ix)); |
6a7129a1 | 6566 | } |
7766f137 GS |
6567 | cSVOPo->op_sv = Nullsv; |
6568 | o->op_targ = ix; | |
6569 | } | |
6570 | #endif | |
2814eb74 | 6571 | o->op_opt = 1; |
07447971 GS |
6572 | break; |
6573 | ||
df91b2c5 AE |
6574 | case OP_CONCAT: |
6575 | if (o->op_next && o->op_next->op_type == OP_STRINGIFY) { | |
6576 | if (o->op_next->op_private & OPpTARGET_MY) { | |
6577 | if (o->op_flags & OPf_STACKED) /* chained concats */ | |
6578 | goto ignore_optimization; | |
6579 | else { | |
6580 | /* assert(PL_opargs[o->op_type] & OA_TARGLEX); */ | |
6581 | o->op_targ = o->op_next->op_targ; | |
6582 | o->op_next->op_targ = 0; | |
6583 | o->op_private |= OPpTARGET_MY; | |
6584 | } | |
6585 | } | |
6586 | op_null(o->op_next); | |
6587 | } | |
6588 | ignore_optimization: | |
2814eb74 | 6589 | o->op_opt = 1; |
df91b2c5 | 6590 | break; |
8990e307 | 6591 | case OP_STUB: |
54310121 | 6592 | if ((o->op_flags & OPf_WANT) != OPf_WANT_LIST) { |
2814eb74 | 6593 | o->op_opt = 1; |
54310121 | 6594 | break; /* Scalar stub must produce undef. List stub is noop */ |
8990e307 | 6595 | } |
748a9306 | 6596 | goto nothin; |
79072805 | 6597 | case OP_NULL: |
acb36ea4 GS |
6598 | if (o->op_targ == OP_NEXTSTATE |
6599 | || o->op_targ == OP_DBSTATE | |
6600 | || o->op_targ == OP_SETSTATE) | |
6601 | { | |
3280af22 | 6602 | PL_curcop = ((COP*)o); |
acb36ea4 | 6603 | } |
dad75012 AMS |
6604 | /* XXX: We avoid setting op_seq here to prevent later calls |
6605 | to peep() from mistakenly concluding that optimisation | |
6606 | has already occurred. This doesn't fix the real problem, | |
6607 | though (See 20010220.007). AMS 20010719 */ | |
2814eb74 | 6608 | /* op_seq functionality is now replaced by op_opt */ |
dad75012 AMS |
6609 | if (oldop && o->op_next) { |
6610 | oldop->op_next = o->op_next; | |
6611 | continue; | |
6612 | } | |
6613 | break; | |
79072805 | 6614 | case OP_SCALAR: |
93a17b20 | 6615 | case OP_LINESEQ: |
463ee0b2 | 6616 | case OP_SCOPE: |
748a9306 | 6617 | nothin: |
a0d0e21e LW |
6618 | if (oldop && o->op_next) { |
6619 | oldop->op_next = o->op_next; | |
79072805 LW |
6620 | continue; |
6621 | } | |
2814eb74 | 6622 | o->op_opt = 1; |
79072805 LW |
6623 | break; |
6624 | ||
6a077020 | 6625 | case OP_PADAV: |
79072805 | 6626 | case OP_GV: |
6a077020 DM |
6627 | if (o->op_type == OP_PADAV || o->op_next->op_type == OP_RV2AV) { |
6628 | OP* pop = (o->op_type == OP_PADAV) ? | |
6629 | o->op_next : o->op_next->op_next; | |
a0d0e21e | 6630 | IV i; |
f9dc862f | 6631 | if (pop && pop->op_type == OP_CONST && |
af5acbb4 | 6632 | ((PL_op = pop->op_next)) && |
8990e307 | 6633 | pop->op_next->op_type == OP_AELEM && |
a0d0e21e | 6634 | !(pop->op_next->op_private & |
78f9721b | 6635 | (OPpLVAL_INTRO|OPpLVAL_DEFER|OPpDEREF|OPpMAYBE_LVSUB)) && |
b0840a2a | 6636 | (i = SvIV(((SVOP*)pop)->op_sv) - PL_curcop->cop_arybase) |
a0d0e21e | 6637 | <= 255 && |
8990e307 LW |
6638 | i >= 0) |
6639 | { | |
350de78d | 6640 | GV *gv; |
af5acbb4 DM |
6641 | if (cSVOPx(pop)->op_private & OPpCONST_STRICT) |
6642 | no_bareword_allowed(pop); | |
6a077020 DM |
6643 | if (o->op_type == OP_GV) |
6644 | op_null(o->op_next); | |
93c66552 DM |
6645 | op_null(pop->op_next); |
6646 | op_null(pop); | |
a0d0e21e LW |
6647 | o->op_flags |= pop->op_next->op_flags & OPf_MOD; |
6648 | o->op_next = pop->op_next->op_next; | |
22c35a8c | 6649 | o->op_ppaddr = PL_ppaddr[OP_AELEMFAST]; |
a0d0e21e | 6650 | o->op_private = (U8)i; |
6a077020 DM |
6651 | if (o->op_type == OP_GV) { |
6652 | gv = cGVOPo_gv; | |
6653 | GvAVn(gv); | |
6654 | } | |
6655 | else | |
6656 | o->op_flags |= OPf_SPECIAL; | |
6657 | o->op_type = OP_AELEMFAST; | |
6658 | } | |
6659 | o->op_opt = 1; | |
6660 | break; | |
6661 | } | |
6662 | ||
6663 | if (o->op_next->op_type == OP_RV2SV) { | |
6664 | if (!(o->op_next->op_private & OPpDEREF)) { | |
6665 | op_null(o->op_next); | |
6666 | o->op_private |= o->op_next->op_private & (OPpLVAL_INTRO | |
6667 | | OPpOUR_INTRO); | |
6668 | o->op_next = o->op_next->op_next; | |
6669 | o->op_type = OP_GVSV; | |
6670 | o->op_ppaddr = PL_ppaddr[OP_GVSV]; | |
8990e307 | 6671 | } |
79072805 | 6672 | } |
e476b1b5 | 6673 | else if ((o->op_private & OPpEARLY_CV) && ckWARN(WARN_PROTOTYPE)) { |
638eceb6 | 6674 | GV *gv = cGVOPo_gv; |
b15aece3 | 6675 | if (SvTYPE(gv) == SVt_PVGV && GvCV(gv) && SvPVX_const(GvCV(gv))) { |
76cd736e GS |
6676 | /* XXX could check prototype here instead of just carping */ |
6677 | SV *sv = sv_newmortal(); | |
6678 | gv_efullname3(sv, gv, Nullch); | |
9014280d | 6679 | Perl_warner(aTHX_ packWARN(WARN_PROTOTYPE), |
35c1215d NC |
6680 | "%"SVf"() called too early to check prototype", |
6681 | sv); | |
76cd736e GS |
6682 | } |
6683 | } | |
89de2904 AMS |
6684 | else if (o->op_next->op_type == OP_READLINE |
6685 | && o->op_next->op_next->op_type == OP_CONCAT | |
6686 | && (o->op_next->op_next->op_flags & OPf_STACKED)) | |
6687 | { | |
d2c45030 AMS |
6688 | /* Turn "$a .= <FH>" into an OP_RCATLINE. AMS 20010917 */ |
6689 | o->op_type = OP_RCATLINE; | |
6690 | o->op_flags |= OPf_STACKED; | |
6691 | o->op_ppaddr = PL_ppaddr[OP_RCATLINE]; | |
89de2904 | 6692 | op_null(o->op_next->op_next); |
d2c45030 | 6693 | op_null(o->op_next); |
89de2904 | 6694 | } |
76cd736e | 6695 | |
2814eb74 | 6696 | o->op_opt = 1; |
79072805 LW |
6697 | break; |
6698 | ||
a0d0e21e | 6699 | case OP_MAPWHILE: |
79072805 LW |
6700 | case OP_GREPWHILE: |
6701 | case OP_AND: | |
6702 | case OP_OR: | |
c963b151 | 6703 | case OP_DOR: |
2c2d71f5 JH |
6704 | case OP_ANDASSIGN: |
6705 | case OP_ORASSIGN: | |
c963b151 | 6706 | case OP_DORASSIGN: |
1a67a97c SM |
6707 | case OP_COND_EXPR: |
6708 | case OP_RANGE: | |
2814eb74 | 6709 | o->op_opt = 1; |
fd4d1407 IZ |
6710 | while (cLOGOP->op_other->op_type == OP_NULL) |
6711 | cLOGOP->op_other = cLOGOP->op_other->op_next; | |
a2efc822 | 6712 | peep(cLOGOP->op_other); /* Recursive calls are not replaced by fptr calls */ |
79072805 LW |
6713 | break; |
6714 | ||
79072805 | 6715 | case OP_ENTERLOOP: |
9c2ca71a | 6716 | case OP_ENTERITER: |
2814eb74 | 6717 | o->op_opt = 1; |
58cccf98 SM |
6718 | while (cLOOP->op_redoop->op_type == OP_NULL) |
6719 | cLOOP->op_redoop = cLOOP->op_redoop->op_next; | |
79072805 | 6720 | peep(cLOOP->op_redoop); |
58cccf98 SM |
6721 | while (cLOOP->op_nextop->op_type == OP_NULL) |
6722 | cLOOP->op_nextop = cLOOP->op_nextop->op_next; | |
79072805 | 6723 | peep(cLOOP->op_nextop); |
58cccf98 SM |
6724 | while (cLOOP->op_lastop->op_type == OP_NULL) |
6725 | cLOOP->op_lastop = cLOOP->op_lastop->op_next; | |
79072805 LW |
6726 | peep(cLOOP->op_lastop); |
6727 | break; | |
6728 | ||
8782bef2 | 6729 | case OP_QR: |
79072805 LW |
6730 | case OP_MATCH: |
6731 | case OP_SUBST: | |
2814eb74 | 6732 | o->op_opt = 1; |
9041c2e3 | 6733 | while (cPMOP->op_pmreplstart && |
58cccf98 SM |
6734 | cPMOP->op_pmreplstart->op_type == OP_NULL) |
6735 | cPMOP->op_pmreplstart = cPMOP->op_pmreplstart->op_next; | |
a0d0e21e | 6736 | peep(cPMOP->op_pmreplstart); |
79072805 LW |
6737 | break; |
6738 | ||
a0d0e21e | 6739 | case OP_EXEC: |
2814eb74 | 6740 | o->op_opt = 1; |
1c846c1f | 6741 | if (ckWARN(WARN_SYNTAX) && o->op_next |
599cee73 | 6742 | && o->op_next->op_type == OP_NEXTSTATE) { |
a0d0e21e | 6743 | if (o->op_next->op_sibling && |
20408e3c GS |
6744 | o->op_next->op_sibling->op_type != OP_EXIT && |
6745 | o->op_next->op_sibling->op_type != OP_WARN && | |
a0d0e21e | 6746 | o->op_next->op_sibling->op_type != OP_DIE) { |
6867be6d | 6747 | const line_t oldline = CopLINE(PL_curcop); |
a0d0e21e | 6748 | |
57843af0 | 6749 | CopLINE_set(PL_curcop, CopLINE((COP*)o->op_next)); |
9014280d | 6750 | Perl_warner(aTHX_ packWARN(WARN_EXEC), |
eeb6a2c9 | 6751 | "Statement unlikely to be reached"); |
9014280d | 6752 | Perl_warner(aTHX_ packWARN(WARN_EXEC), |
cc507455 | 6753 | "\t(Maybe you meant system() when you said exec()?)\n"); |
57843af0 | 6754 | CopLINE_set(PL_curcop, oldline); |
a0d0e21e LW |
6755 | } |
6756 | } | |
6757 | break; | |
b2ffa427 | 6758 | |
c750a3ec | 6759 | case OP_HELEM: { |
e75d1f10 | 6760 | UNOP *rop; |
6d822dc4 | 6761 | SV *lexname; |
e75d1f10 | 6762 | GV **fields; |
6d822dc4 | 6763 | SV **svp, *sv; |
d5263905 | 6764 | const char *key = NULL; |
c750a3ec | 6765 | STRLEN keylen; |
b2ffa427 | 6766 | |
2814eb74 | 6767 | o->op_opt = 1; |
1c846c1f NIS |
6768 | |
6769 | if (((BINOP*)o)->op_last->op_type != OP_CONST) | |
c750a3ec | 6770 | break; |
1c846c1f NIS |
6771 | |
6772 | /* Make the CONST have a shared SV */ | |
6773 | svp = cSVOPx_svp(((BINOP*)o)->op_last); | |
3049cdab | 6774 | if ((!SvFAKE(sv = *svp) || !SvREADONLY(sv)) && !IS_PADCONST(sv)) { |
d5263905 | 6775 | key = SvPV_const(sv, keylen); |
25716404 GS |
6776 | lexname = newSVpvn_share(key, |
6777 | SvUTF8(sv) ? -(I32)keylen : keylen, | |
6778 | 0); | |
1c846c1f NIS |
6779 | SvREFCNT_dec(sv); |
6780 | *svp = lexname; | |
6781 | } | |
e75d1f10 RD |
6782 | |
6783 | if ((o->op_private & (OPpLVAL_INTRO))) | |
6784 | break; | |
6785 | ||
6786 | rop = (UNOP*)((BINOP*)o)->op_first; | |
6787 | if (rop->op_type != OP_RV2HV || rop->op_first->op_type != OP_PADSV) | |
6788 | break; | |
6789 | lexname = *av_fetch(PL_comppad_name, rop->op_first->op_targ, TRUE); | |
6790 | if (!(SvFLAGS(lexname) & SVpad_TYPED)) | |
6791 | break; | |
6792 | fields = (GV**)hv_fetch(SvSTASH(lexname), "FIELDS", 6, FALSE); | |
6793 | if (!fields || !GvHV(*fields)) | |
6794 | break; | |
93524f2b | 6795 | key = SvPV_const(*svp, keylen); |
e75d1f10 RD |
6796 | if (!hv_fetch(GvHV(*fields), key, |
6797 | SvUTF8(*svp) ? -(I32)keylen : keylen, FALSE)) | |
6798 | { | |
6799 | Perl_croak(aTHX_ "No such class field \"%s\" " | |
6800 | "in variable %s of type %s", | |
93524f2b | 6801 | key, SvPV_nolen_const(lexname), HvNAME_get(SvSTASH(lexname))); |
e75d1f10 RD |
6802 | } |
6803 | ||
6d822dc4 MS |
6804 | break; |
6805 | } | |
c750a3ec | 6806 | |
e75d1f10 RD |
6807 | case OP_HSLICE: { |
6808 | UNOP *rop; | |
6809 | SV *lexname; | |
6810 | GV **fields; | |
6811 | SV **svp; | |
93524f2b | 6812 | const char *key; |
e75d1f10 RD |
6813 | STRLEN keylen; |
6814 | SVOP *first_key_op, *key_op; | |
6815 | ||
6816 | if ((o->op_private & (OPpLVAL_INTRO)) | |
6817 | /* I bet there's always a pushmark... */ | |
6818 | || ((LISTOP*)o)->op_first->op_sibling->op_type != OP_LIST) | |
6819 | /* hmmm, no optimization if list contains only one key. */ | |
6820 | break; | |
6821 | rop = (UNOP*)((LISTOP*)o)->op_last; | |
6822 | if (rop->op_type != OP_RV2HV) | |
6823 | break; | |
6824 | if (rop->op_first->op_type == OP_PADSV) | |
6825 | /* @$hash{qw(keys here)} */ | |
6826 | rop = (UNOP*)rop->op_first; | |
6827 | else { | |
6828 | /* @{$hash}{qw(keys here)} */ | |
6829 | if (rop->op_first->op_type == OP_SCOPE | |
6830 | && cLISTOPx(rop->op_first)->op_last->op_type == OP_PADSV) | |
6831 | { | |
6832 | rop = (UNOP*)cLISTOPx(rop->op_first)->op_last; | |
6833 | } | |
6834 | else | |
6835 | break; | |
6836 | } | |
6837 | ||
6838 | lexname = *av_fetch(PL_comppad_name, rop->op_targ, TRUE); | |
6839 | if (!(SvFLAGS(lexname) & SVpad_TYPED)) | |
6840 | break; | |
6841 | fields = (GV**)hv_fetch(SvSTASH(lexname), "FIELDS", 6, FALSE); | |
6842 | if (!fields || !GvHV(*fields)) | |
6843 | break; | |
6844 | /* Again guessing that the pushmark can be jumped over.... */ | |
6845 | first_key_op = (SVOP*)((LISTOP*)((LISTOP*)o)->op_first->op_sibling) | |
6846 | ->op_first->op_sibling; | |
6847 | for (key_op = first_key_op; key_op; | |
6848 | key_op = (SVOP*)key_op->op_sibling) { | |
6849 | if (key_op->op_type != OP_CONST) | |
6850 | continue; | |
6851 | svp = cSVOPx_svp(key_op); | |
93524f2b | 6852 | key = SvPV_const(*svp, keylen); |
e75d1f10 RD |
6853 | if (!hv_fetch(GvHV(*fields), key, |
6854 | SvUTF8(*svp) ? -(I32)keylen : keylen, FALSE)) | |
6855 | { | |
6856 | Perl_croak(aTHX_ "No such class field \"%s\" " | |
6857 | "in variable %s of type %s", | |
bfcb3514 | 6858 | key, SvPV_nolen(lexname), HvNAME_get(SvSTASH(lexname))); |
e75d1f10 RD |
6859 | } |
6860 | } | |
6861 | break; | |
6862 | } | |
6863 | ||
fe1bc4cf | 6864 | case OP_SORT: { |
fe1bc4cf DM |
6865 | /* will point to RV2AV or PADAV op on LHS/RHS of assign */ |
6866 | OP *oleft, *oright; | |
6867 | OP *o2; | |
6868 | ||
fe1bc4cf DM |
6869 | /* check that RHS of sort is a single plain array */ |
6870 | oright = cUNOPo->op_first; | |
6871 | if (!oright || oright->op_type != OP_PUSHMARK) | |
6872 | break; | |
471178c0 NC |
6873 | |
6874 | /* reverse sort ... can be optimised. */ | |
6875 | if (!cUNOPo->op_sibling) { | |
6876 | /* Nothing follows us on the list. */ | |
6877 | OP *reverse = o->op_next; | |
6878 | ||
6879 | if (reverse->op_type == OP_REVERSE && | |
6880 | (reverse->op_flags & OPf_WANT) == OPf_WANT_LIST) { | |
6881 | OP *pushmark = cUNOPx(reverse)->op_first; | |
6882 | if (pushmark && (pushmark->op_type == OP_PUSHMARK) | |
6883 | && (cUNOPx(pushmark)->op_sibling == o)) { | |
6884 | /* reverse -> pushmark -> sort */ | |
6885 | o->op_private |= OPpSORT_REVERSE; | |
6886 | op_null(reverse); | |
6887 | pushmark->op_next = oright->op_next; | |
6888 | op_null(oright); | |
6889 | } | |
6890 | } | |
6891 | } | |
6892 | ||
6893 | /* make @a = sort @a act in-place */ | |
6894 | ||
6895 | o->op_opt = 1; | |
6896 | ||
fe1bc4cf DM |
6897 | oright = cUNOPx(oright)->op_sibling; |
6898 | if (!oright) | |
6899 | break; | |
6900 | if (oright->op_type == OP_NULL) { /* skip sort block/sub */ | |
6901 | oright = cUNOPx(oright)->op_sibling; | |
6902 | } | |
6903 | ||
6904 | if (!oright || | |
6905 | (oright->op_type != OP_RV2AV && oright->op_type != OP_PADAV) | |
6906 | || oright->op_next != o | |
6907 | || (oright->op_private & OPpLVAL_INTRO) | |
6908 | ) | |
6909 | break; | |
6910 | ||
6911 | /* o2 follows the chain of op_nexts through the LHS of the | |
6912 | * assign (if any) to the aassign op itself */ | |
6913 | o2 = o->op_next; | |
6914 | if (!o2 || o2->op_type != OP_NULL) | |
6915 | break; | |
6916 | o2 = o2->op_next; | |
6917 | if (!o2 || o2->op_type != OP_PUSHMARK) | |
6918 | break; | |
6919 | o2 = o2->op_next; | |
6920 | if (o2 && o2->op_type == OP_GV) | |
6921 | o2 = o2->op_next; | |
6922 | if (!o2 | |
6923 | || (o2->op_type != OP_PADAV && o2->op_type != OP_RV2AV) | |
6924 | || (o2->op_private & OPpLVAL_INTRO) | |
6925 | ) | |
6926 | break; | |
6927 | oleft = o2; | |
6928 | o2 = o2->op_next; | |
6929 | if (!o2 || o2->op_type != OP_NULL) | |
6930 | break; | |
6931 | o2 = o2->op_next; | |
6932 | if (!o2 || o2->op_type != OP_AASSIGN | |
6933 | || (o2->op_flags & OPf_WANT) != OPf_WANT_VOID) | |
6934 | break; | |
6935 | ||
db7511db DM |
6936 | /* check that the sort is the first arg on RHS of assign */ |
6937 | ||
6938 | o2 = cUNOPx(o2)->op_first; | |
6939 | if (!o2 || o2->op_type != OP_NULL) | |
6940 | break; | |
6941 | o2 = cUNOPx(o2)->op_first; | |
6942 | if (!o2 || o2->op_type != OP_PUSHMARK) | |
6943 | break; | |
6944 | if (o2->op_sibling != o) | |
6945 | break; | |
6946 | ||
fe1bc4cf DM |
6947 | /* check the array is the same on both sides */ |
6948 | if (oleft->op_type == OP_RV2AV) { | |
6949 | if (oright->op_type != OP_RV2AV | |
6950 | || !cUNOPx(oright)->op_first | |
6951 | || cUNOPx(oright)->op_first->op_type != OP_GV | |
6952 | || cGVOPx_gv(cUNOPx(oleft)->op_first) != | |
6953 | cGVOPx_gv(cUNOPx(oright)->op_first) | |
6954 | ) | |
6955 | break; | |
6956 | } | |
6957 | else if (oright->op_type != OP_PADAV | |
6958 | || oright->op_targ != oleft->op_targ | |
6959 | ) | |
6960 | break; | |
6961 | ||
6962 | /* transfer MODishness etc from LHS arg to RHS arg */ | |
6963 | oright->op_flags = oleft->op_flags; | |
6964 | o->op_private |= OPpSORT_INPLACE; | |
6965 | ||
6966 | /* excise push->gv->rv2av->null->aassign */ | |
6967 | o2 = o->op_next->op_next; | |
6968 | op_null(o2); /* PUSHMARK */ | |
6969 | o2 = o2->op_next; | |
6970 | if (o2->op_type == OP_GV) { | |
6971 | op_null(o2); /* GV */ | |
6972 | o2 = o2->op_next; | |
6973 | } | |
6974 | op_null(o2); /* RV2AV or PADAV */ | |
6975 | o2 = o2->op_next->op_next; | |
6976 | op_null(o2); /* AASSIGN */ | |
6977 | ||
6978 | o->op_next = o2->op_next; | |
6979 | ||
6980 | break; | |
6981 | } | |
ef3e5ea9 NC |
6982 | |
6983 | case OP_REVERSE: { | |
e682d7b7 | 6984 | OP *ourmark, *theirmark, *ourlast, *iter, *expushmark, *rv2av; |
ce335f37 | 6985 | OP *gvop = NULL; |
ef3e5ea9 NC |
6986 | LISTOP *enter, *exlist; |
6987 | o->op_opt = 1; | |
6988 | ||
6989 | enter = (LISTOP *) o->op_next; | |
6990 | if (!enter) | |
6991 | break; | |
6992 | if (enter->op_type == OP_NULL) { | |
6993 | enter = (LISTOP *) enter->op_next; | |
6994 | if (!enter) | |
6995 | break; | |
6996 | } | |
d46f46af NC |
6997 | /* for $a (...) will have OP_GV then OP_RV2GV here. |
6998 | for (...) just has an OP_GV. */ | |
ce335f37 NC |
6999 | if (enter->op_type == OP_GV) { |
7000 | gvop = (OP *) enter; | |
7001 | enter = (LISTOP *) enter->op_next; | |
7002 | if (!enter) | |
7003 | break; | |
d46f46af NC |
7004 | if (enter->op_type == OP_RV2GV) { |
7005 | enter = (LISTOP *) enter->op_next; | |
7006 | if (!enter) | |
ce335f37 | 7007 | break; |
d46f46af | 7008 | } |
ce335f37 NC |
7009 | } |
7010 | ||
ef3e5ea9 NC |
7011 | if (enter->op_type != OP_ENTERITER) |
7012 | break; | |
7013 | ||
7014 | iter = enter->op_next; | |
7015 | if (!iter || iter->op_type != OP_ITER) | |
7016 | break; | |
7017 | ||
ce335f37 NC |
7018 | expushmark = enter->op_first; |
7019 | if (!expushmark || expushmark->op_type != OP_NULL | |
7020 | || expushmark->op_targ != OP_PUSHMARK) | |
7021 | break; | |
7022 | ||
7023 | exlist = (LISTOP *) expushmark->op_sibling; | |
ef3e5ea9 NC |
7024 | if (!exlist || exlist->op_type != OP_NULL |
7025 | || exlist->op_targ != OP_LIST) | |
7026 | break; | |
7027 | ||
7028 | if (exlist->op_last != o) { | |
7029 | /* Mmm. Was expecting to point back to this op. */ | |
7030 | break; | |
7031 | } | |
7032 | theirmark = exlist->op_first; | |
7033 | if (!theirmark || theirmark->op_type != OP_PUSHMARK) | |
7034 | break; | |
7035 | ||
c491ecac | 7036 | if (theirmark->op_sibling != o) { |
ef3e5ea9 NC |
7037 | /* There's something between the mark and the reverse, eg |
7038 | for (1, reverse (...)) | |
7039 | so no go. */ | |
7040 | break; | |
7041 | } | |
7042 | ||
c491ecac NC |
7043 | ourmark = ((LISTOP *)o)->op_first; |
7044 | if (!ourmark || ourmark->op_type != OP_PUSHMARK) | |
7045 | break; | |
7046 | ||
ef3e5ea9 NC |
7047 | ourlast = ((LISTOP *)o)->op_last; |
7048 | if (!ourlast || ourlast->op_next != o) | |
7049 | break; | |
7050 | ||
e682d7b7 NC |
7051 | rv2av = ourmark->op_sibling; |
7052 | if (rv2av && rv2av->op_type == OP_RV2AV && rv2av->op_sibling == 0 | |
7053 | && rv2av->op_flags == (OPf_WANT_LIST | OPf_KIDS) | |
7054 | && enter->op_flags == (OPf_WANT_LIST | OPf_KIDS)) { | |
7055 | /* We're just reversing a single array. */ | |
7056 | rv2av->op_flags = OPf_WANT_SCALAR | OPf_KIDS | OPf_REF; | |
7057 | enter->op_flags |= OPf_STACKED; | |
7058 | } | |
7059 | ||
ef3e5ea9 NC |
7060 | /* We don't have control over who points to theirmark, so sacrifice |
7061 | ours. */ | |
7062 | theirmark->op_next = ourmark->op_next; | |
7063 | theirmark->op_flags = ourmark->op_flags; | |
ce335f37 | 7064 | ourlast->op_next = gvop ? gvop : (OP *) enter; |
ef3e5ea9 NC |
7065 | op_null(ourmark); |
7066 | op_null(o); | |
7067 | enter->op_private |= OPpITER_REVERSED; | |
7068 | iter->op_private |= OPpITER_REVERSED; | |
7069 | ||
7070 | break; | |
7071 | } | |
fe1bc4cf | 7072 | |
79072805 | 7073 | default: |
2814eb74 | 7074 | o->op_opt = 1; |
79072805 LW |
7075 | break; |
7076 | } | |
a0d0e21e | 7077 | oldop = o; |
79072805 | 7078 | } |
a0d0e21e | 7079 | LEAVE; |
79072805 | 7080 | } |
beab0874 | 7081 | |
1cb0ed9b RGS |
7082 | char* |
7083 | Perl_custom_op_name(pTHX_ const OP* o) | |
53e06cf0 | 7084 | { |
e1ec3a88 | 7085 | const IV index = PTR2IV(o->op_ppaddr); |
53e06cf0 SC |
7086 | SV* keysv; |
7087 | HE* he; | |
7088 | ||
7089 | if (!PL_custom_op_names) /* This probably shouldn't happen */ | |
27da23d5 | 7090 | return (char *)PL_op_name[OP_CUSTOM]; |
53e06cf0 SC |
7091 | |
7092 | keysv = sv_2mortal(newSViv(index)); | |
7093 | ||
7094 | he = hv_fetch_ent(PL_custom_op_names, keysv, 0, 0); | |
7095 | if (!he) | |
27da23d5 | 7096 | return (char *)PL_op_name[OP_CUSTOM]; /* Don't know who you are */ |
53e06cf0 SC |
7097 | |
7098 | return SvPV_nolen(HeVAL(he)); | |
7099 | } | |
7100 | ||
1cb0ed9b RGS |
7101 | char* |
7102 | Perl_custom_op_desc(pTHX_ const OP* o) | |
53e06cf0 | 7103 | { |
e1ec3a88 | 7104 | const IV index = PTR2IV(o->op_ppaddr); |
53e06cf0 SC |
7105 | SV* keysv; |
7106 | HE* he; | |
7107 | ||
7108 | if (!PL_custom_op_descs) | |
27da23d5 | 7109 | return (char *)PL_op_desc[OP_CUSTOM]; |
53e06cf0 SC |
7110 | |
7111 | keysv = sv_2mortal(newSViv(index)); | |
7112 | ||
7113 | he = hv_fetch_ent(PL_custom_op_descs, keysv, 0, 0); | |
7114 | if (!he) | |
27da23d5 | 7115 | return (char *)PL_op_desc[OP_CUSTOM]; |
53e06cf0 SC |
7116 | |
7117 | return SvPV_nolen(HeVAL(he)); | |
7118 | } | |
19e8ce8e | 7119 | |
beab0874 JT |
7120 | #include "XSUB.h" |
7121 | ||
7122 | /* Efficient sub that returns a constant scalar value. */ | |
7123 | static void | |
acfe0abc | 7124 | const_sv_xsub(pTHX_ CV* cv) |
beab0874 JT |
7125 | { |
7126 | dXSARGS; | |
9cbac4c7 DM |
7127 | if (items != 0) { |
7128 | #if 0 | |
7129 | Perl_croak(aTHX_ "usage: %s::%s()", | |
bfcb3514 | 7130 | HvNAME_get(GvSTASH(CvGV(cv))), GvNAME(CvGV(cv))); |
9cbac4c7 DM |
7131 | #endif |
7132 | } | |
9a049f1c | 7133 | EXTEND(sp, 1); |
0768512c | 7134 | ST(0) = (SV*)XSANY.any_ptr; |
beab0874 JT |
7135 | XSRETURN(1); |
7136 | } | |
4946a0fa NC |
7137 | |
7138 | /* | |
7139 | * Local variables: | |
7140 | * c-indentation-style: bsd | |
7141 | * c-basic-offset: 4 | |
7142 | * indent-tabs-mode: t | |
7143 | * End: | |
7144 | * | |
37442d52 RGS |
7145 | * ex: set ts=8 sts=4 sw=4 noet: |
7146 | */ |