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 | { |
551405c4 | 131 | I32 * const * const ptr = (I32 **) op; |
aec46f14 | 132 | I32 * const slab = ptr[-1]; |
5a8e194f NIS |
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 | 163 | { |
46c461b5 | 164 | SV* const 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 $<special_var>" etc etc */ |
6b58708b NC |
214 | if (*name && |
215 | !(PL_in_my == KEY_our || | |
155aba94 | 216 | isALPHA(name[1]) || |
39e02b42 | 217 | (USE_UTF8_IN_NAMES && UTF8_IS_START(name[1])) || |
6b58708b | 218 | (name[1] == '_' && (*name == '$' || name[2])))) |
834a4ddd | 219 | { |
6b58708b | 220 | /* name[2] is true if strlen(name) > 2 */ |
c4d0567e | 221 | if (!isPRINT(name[1]) || strchr("\t\n\r\f", name[1])) { |
2b92dfce GS |
222 | /* 1999-02-27 mjd@plover.com */ |
223 | char *p; | |
224 | p = strchr(name, '\0'); | |
225 | /* The next block assumes the buffer is at least 205 chars | |
226 | long. At present, it's always at least 256 chars. */ | |
227 | if (p-name > 200) { | |
228 | strcpy(name+200, "..."); | |
229 | p = name+199; | |
230 | } | |
231 | else { | |
232 | p[1] = '\0'; | |
233 | } | |
234 | /* Move everything else down one character */ | |
235 | for (; p-name > 2; p--) | |
236 | *p = *(p-1); | |
46fc3d4c | 237 | name[2] = toCTRL(name[1]); |
238 | name[1] = '^'; | |
239 | } | |
cea2e8a9 | 240 | yyerror(Perl_form(aTHX_ "Can't use global %s in \"my\"",name)); |
a0d0e21e | 241 | } |
748a9306 | 242 | |
dd2155a4 DM |
243 | /* check for duplicate declaration */ |
244 | pad_check_dup(name, | |
c5661c80 | 245 | (bool)(PL_in_my == KEY_our), |
dd2155a4 DM |
246 | (PL_curstash ? PL_curstash : PL_defstash) |
247 | ); | |
33b8ce05 | 248 | |
dd2155a4 DM |
249 | if (PL_in_my_stash && *name != '$') { |
250 | yyerror(Perl_form(aTHX_ | |
251 | "Can't declare class for non-scalar %s in \"%s\"", | |
252 | name, PL_in_my == KEY_our ? "our" : "my")); | |
6b35e009 GS |
253 | } |
254 | ||
dd2155a4 | 255 | /* allocate a spare slot and store the name in that slot */ |
93a17b20 | 256 | |
dd2155a4 DM |
257 | off = pad_add_name(name, |
258 | PL_in_my_stash, | |
259 | (PL_in_my == KEY_our | |
133706a6 RGS |
260 | /* $_ is always in main::, even with our */ |
261 | ? (PL_curstash && !strEQ(name,"$_") ? PL_curstash : PL_defstash) | |
dd2155a4 DM |
262 | : Nullhv |
263 | ), | |
264 | 0 /* not fake */ | |
265 | ); | |
266 | return off; | |
79072805 LW |
267 | } |
268 | ||
79072805 LW |
269 | /* Destructor */ |
270 | ||
271 | void | |
864dbfa3 | 272 | Perl_op_free(pTHX_ OP *o) |
79072805 | 273 | { |
27da23d5 | 274 | dVAR; |
acb36ea4 | 275 | OPCODE type; |
4026c95a | 276 | PADOFFSET refcnt; |
79072805 | 277 | |
2814eb74 | 278 | if (!o || o->op_static) |
79072805 LW |
279 | return; |
280 | ||
7934575e GS |
281 | if (o->op_private & OPpREFCOUNTED) { |
282 | switch (o->op_type) { | |
283 | case OP_LEAVESUB: | |
284 | case OP_LEAVESUBLV: | |
285 | case OP_LEAVEEVAL: | |
286 | case OP_LEAVE: | |
287 | case OP_SCOPE: | |
288 | case OP_LEAVEWRITE: | |
289 | OP_REFCNT_LOCK; | |
4026c95a | 290 | refcnt = OpREFCNT_dec(o); |
7934575e | 291 | OP_REFCNT_UNLOCK; |
4026c95a SH |
292 | if (refcnt) |
293 | return; | |
7934575e GS |
294 | break; |
295 | default: | |
296 | break; | |
297 | } | |
298 | } | |
299 | ||
11343788 | 300 | if (o->op_flags & OPf_KIDS) { |
6867be6d | 301 | register OP *kid, *nextkid; |
11343788 | 302 | for (kid = cUNOPo->op_first; kid; kid = nextkid) { |
85e6fe83 | 303 | nextkid = kid->op_sibling; /* Get before next freeing kid */ |
79072805 | 304 | op_free(kid); |
85e6fe83 | 305 | } |
79072805 | 306 | } |
acb36ea4 GS |
307 | type = o->op_type; |
308 | if (type == OP_NULL) | |
eb160463 | 309 | type = (OPCODE)o->op_targ; |
acb36ea4 GS |
310 | |
311 | /* COP* is not cleared by op_clear() so that we may track line | |
312 | * numbers etc even after null() */ | |
313 | if (type == OP_NEXTSTATE || type == OP_SETSTATE || type == OP_DBSTATE) | |
314 | cop_free((COP*)o); | |
315 | ||
316 | op_clear(o); | |
238a4c30 | 317 | FreeOp(o); |
4d494880 DM |
318 | #ifdef DEBUG_LEAKING_SCALARS |
319 | if (PL_op == o) | |
320 | PL_op = Nullop; | |
321 | #endif | |
acb36ea4 | 322 | } |
79072805 | 323 | |
93c66552 DM |
324 | void |
325 | Perl_op_clear(pTHX_ OP *o) | |
acb36ea4 | 326 | { |
13137afc | 327 | |
27da23d5 | 328 | dVAR; |
11343788 | 329 | switch (o->op_type) { |
acb36ea4 GS |
330 | case OP_NULL: /* Was holding old type, if any. */ |
331 | case OP_ENTEREVAL: /* Was holding hints. */ | |
acb36ea4 | 332 | o->op_targ = 0; |
a0d0e21e | 333 | break; |
a6006777 | 334 | default: |
ac4c12e7 | 335 | if (!(o->op_flags & OPf_REF) |
0b94c7bb | 336 | || (PL_check[o->op_type] != MEMBER_TO_FPTR(Perl_ck_ftst))) |
a6006777 | 337 | break; |
338 | /* FALL THROUGH */ | |
463ee0b2 | 339 | case OP_GVSV: |
79072805 | 340 | case OP_GV: |
a6006777 | 341 | case OP_AELEMFAST: |
6a077020 DM |
342 | if (! (o->op_type == OP_AELEMFAST && o->op_flags & OPf_SPECIAL)) { |
343 | /* not an OP_PADAV replacement */ | |
350de78d | 344 | #ifdef USE_ITHREADS |
6a077020 DM |
345 | if (cPADOPo->op_padix > 0) { |
346 | /* No GvIN_PAD_off(cGVOPo_gv) here, because other references | |
347 | * may still exist on the pad */ | |
348 | pad_swipe(cPADOPo->op_padix, TRUE); | |
349 | cPADOPo->op_padix = 0; | |
350 | } | |
350de78d | 351 | #else |
6a077020 DM |
352 | SvREFCNT_dec(cSVOPo->op_sv); |
353 | cSVOPo->op_sv = Nullsv; | |
350de78d | 354 | #endif |
6a077020 | 355 | } |
79072805 | 356 | break; |
a1ae71d2 | 357 | case OP_METHOD_NAMED: |
79072805 | 358 | case OP_CONST: |
11343788 | 359 | SvREFCNT_dec(cSVOPo->op_sv); |
acb36ea4 | 360 | cSVOPo->op_sv = Nullsv; |
3b1c21fa AB |
361 | #ifdef USE_ITHREADS |
362 | /** Bug #15654 | |
363 | Even if op_clear does a pad_free for the target of the op, | |
6a077020 | 364 | pad_free doesn't actually remove the sv that exists in the pad; |
3b1c21fa AB |
365 | instead it lives on. This results in that it could be reused as |
366 | a target later on when the pad was reallocated. | |
367 | **/ | |
368 | if(o->op_targ) { | |
369 | pad_swipe(o->op_targ,1); | |
370 | o->op_targ = 0; | |
371 | } | |
372 | #endif | |
79072805 | 373 | break; |
748a9306 LW |
374 | case OP_GOTO: |
375 | case OP_NEXT: | |
376 | case OP_LAST: | |
377 | case OP_REDO: | |
11343788 | 378 | if (o->op_flags & (OPf_SPECIAL|OPf_STACKED|OPf_KIDS)) |
748a9306 LW |
379 | break; |
380 | /* FALL THROUGH */ | |
a0d0e21e | 381 | case OP_TRANS: |
acb36ea4 | 382 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { |
a0ed51b3 | 383 | SvREFCNT_dec(cSVOPo->op_sv); |
acb36ea4 GS |
384 | cSVOPo->op_sv = Nullsv; |
385 | } | |
386 | else { | |
a0ed51b3 | 387 | Safefree(cPVOPo->op_pv); |
acb36ea4 GS |
388 | cPVOPo->op_pv = Nullch; |
389 | } | |
a0d0e21e LW |
390 | break; |
391 | case OP_SUBST: | |
11343788 | 392 | op_free(cPMOPo->op_pmreplroot); |
971a9dd3 | 393 | goto clear_pmop; |
748a9306 | 394 | case OP_PUSHRE: |
971a9dd3 | 395 | #ifdef USE_ITHREADS |
ba89bb6e | 396 | if (INT2PTR(PADOFFSET, cPMOPo->op_pmreplroot)) { |
dd2155a4 DM |
397 | /* No GvIN_PAD_off here, because other references may still |
398 | * exist on the pad */ | |
399 | pad_swipe(INT2PTR(PADOFFSET, cPMOPo->op_pmreplroot), TRUE); | |
971a9dd3 GS |
400 | } |
401 | #else | |
402 | SvREFCNT_dec((SV*)cPMOPo->op_pmreplroot); | |
403 | #endif | |
404 | /* FALL THROUGH */ | |
a0d0e21e | 405 | case OP_MATCH: |
8782bef2 | 406 | case OP_QR: |
971a9dd3 | 407 | clear_pmop: |
cb55de95 | 408 | { |
551405c4 | 409 | HV * const pmstash = PmopSTASH(cPMOPo); |
0565a181 | 410 | if (pmstash && !SvIS_FREED(pmstash)) { |
551405c4 | 411 | MAGIC * const mg = mg_find((SV*)pmstash, PERL_MAGIC_symtab); |
8d2f4536 NC |
412 | if (mg) { |
413 | PMOP *pmop = (PMOP*) mg->mg_obj; | |
414 | PMOP *lastpmop = NULL; | |
415 | while (pmop) { | |
416 | if (cPMOPo == pmop) { | |
417 | if (lastpmop) | |
418 | lastpmop->op_pmnext = pmop->op_pmnext; | |
419 | else | |
420 | mg->mg_obj = (SV*) pmop->op_pmnext; | |
421 | break; | |
422 | } | |
423 | lastpmop = pmop; | |
424 | pmop = pmop->op_pmnext; | |
cb55de95 | 425 | } |
cb55de95 | 426 | } |
83da49e6 | 427 | } |
05ec9bb3 | 428 | PmopSTASH_free(cPMOPo); |
cb55de95 | 429 | } |
971a9dd3 | 430 | cPMOPo->op_pmreplroot = Nullop; |
5f8cb046 DM |
431 | /* we use the "SAFE" version of the PM_ macros here |
432 | * since sv_clean_all might release some PMOPs | |
433 | * after PL_regex_padav has been cleared | |
434 | * and the clearing of PL_regex_padav needs to | |
435 | * happen before sv_clean_all | |
436 | */ | |
437 | ReREFCNT_dec(PM_GETRE_SAFE(cPMOPo)); | |
438 | PM_SETRE_SAFE(cPMOPo, (REGEXP*)NULL); | |
13137afc AB |
439 | #ifdef USE_ITHREADS |
440 | if(PL_regex_pad) { /* We could be in destruction */ | |
441 | av_push((AV*) PL_regex_pad[0],(SV*) PL_regex_pad[(cPMOPo)->op_pmoffset]); | |
1cc8b4c5 | 442 | SvREPADTMP_on(PL_regex_pad[(cPMOPo)->op_pmoffset]); |
13137afc AB |
443 | PM_SETRE(cPMOPo, (cPMOPo)->op_pmoffset); |
444 | } | |
1eb1540c | 445 | #endif |
13137afc | 446 | |
a0d0e21e | 447 | break; |
79072805 LW |
448 | } |
449 | ||
743e66e6 | 450 | if (o->op_targ > 0) { |
11343788 | 451 | pad_free(o->op_targ); |
743e66e6 GS |
452 | o->op_targ = 0; |
453 | } | |
79072805 LW |
454 | } |
455 | ||
76e3520e | 456 | STATIC void |
3eb57f73 HS |
457 | S_cop_free(pTHX_ COP* cop) |
458 | { | |
05ec9bb3 NIS |
459 | Safefree(cop->cop_label); /* FIXME: treaddead ??? */ |
460 | CopFILE_free(cop); | |
461 | CopSTASH_free(cop); | |
0453d815 | 462 | if (! specialWARN(cop->cop_warnings)) |
3eb57f73 | 463 | SvREFCNT_dec(cop->cop_warnings); |
05ec9bb3 NIS |
464 | if (! specialCopIO(cop->cop_io)) { |
465 | #ifdef USE_ITHREADS | |
042f6df8 | 466 | #if 0 |
05ec9bb3 NIS |
467 | STRLEN len; |
468 | char *s = SvPV(cop->cop_io,len); | |
b178108d JH |
469 | Perl_warn(aTHX_ "io='%.*s'",(int) len,s); /* ??? --jhi */ |
470 | #endif | |
05ec9bb3 | 471 | #else |
ac27b0f5 | 472 | SvREFCNT_dec(cop->cop_io); |
05ec9bb3 NIS |
473 | #endif |
474 | } | |
3eb57f73 HS |
475 | } |
476 | ||
93c66552 DM |
477 | void |
478 | Perl_op_null(pTHX_ OP *o) | |
8990e307 | 479 | { |
27da23d5 | 480 | dVAR; |
acb36ea4 GS |
481 | if (o->op_type == OP_NULL) |
482 | return; | |
483 | op_clear(o); | |
11343788 MB |
484 | o->op_targ = o->op_type; |
485 | o->op_type = OP_NULL; | |
22c35a8c | 486 | o->op_ppaddr = PL_ppaddr[OP_NULL]; |
8990e307 LW |
487 | } |
488 | ||
4026c95a SH |
489 | void |
490 | Perl_op_refcnt_lock(pTHX) | |
491 | { | |
27da23d5 | 492 | dVAR; |
4026c95a SH |
493 | OP_REFCNT_LOCK; |
494 | } | |
495 | ||
496 | void | |
497 | Perl_op_refcnt_unlock(pTHX) | |
498 | { | |
27da23d5 | 499 | dVAR; |
4026c95a SH |
500 | OP_REFCNT_UNLOCK; |
501 | } | |
502 | ||
79072805 LW |
503 | /* Contextualizers */ |
504 | ||
463ee0b2 | 505 | #define LINKLIST(o) ((o)->op_next ? (o)->op_next : linklist((OP*)o)) |
79072805 LW |
506 | |
507 | OP * | |
864dbfa3 | 508 | Perl_linklist(pTHX_ OP *o) |
79072805 | 509 | { |
79072805 | 510 | |
11343788 MB |
511 | if (o->op_next) |
512 | return o->op_next; | |
79072805 LW |
513 | |
514 | /* establish postfix order */ | |
11343788 | 515 | if (cUNOPo->op_first) { |
6867be6d | 516 | register OP *kid; |
11343788 MB |
517 | o->op_next = LINKLIST(cUNOPo->op_first); |
518 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) { | |
79072805 LW |
519 | if (kid->op_sibling) |
520 | kid->op_next = LINKLIST(kid->op_sibling); | |
521 | else | |
11343788 | 522 | kid->op_next = o; |
79072805 LW |
523 | } |
524 | } | |
525 | else | |
11343788 | 526 | o->op_next = o; |
79072805 | 527 | |
11343788 | 528 | return o->op_next; |
79072805 LW |
529 | } |
530 | ||
531 | OP * | |
864dbfa3 | 532 | Perl_scalarkids(pTHX_ OP *o) |
79072805 | 533 | { |
11343788 | 534 | if (o && o->op_flags & OPf_KIDS) { |
bfed75c6 | 535 | OP *kid; |
11343788 | 536 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
537 | scalar(kid); |
538 | } | |
11343788 | 539 | return o; |
79072805 LW |
540 | } |
541 | ||
76e3520e | 542 | STATIC OP * |
cea2e8a9 | 543 | S_scalarboolean(pTHX_ OP *o) |
8990e307 | 544 | { |
d008e5eb | 545 | if (o->op_type == OP_SASSIGN && cBINOPo->op_first->op_type == OP_CONST) { |
d008e5eb | 546 | if (ckWARN(WARN_SYNTAX)) { |
6867be6d | 547 | const line_t oldline = CopLINE(PL_curcop); |
a0d0e21e | 548 | |
d008e5eb | 549 | if (PL_copline != NOLINE) |
57843af0 | 550 | CopLINE_set(PL_curcop, PL_copline); |
9014280d | 551 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Found = in conditional, should be =="); |
57843af0 | 552 | CopLINE_set(PL_curcop, oldline); |
d008e5eb | 553 | } |
a0d0e21e | 554 | } |
11343788 | 555 | return scalar(o); |
8990e307 LW |
556 | } |
557 | ||
558 | OP * | |
864dbfa3 | 559 | Perl_scalar(pTHX_ OP *o) |
79072805 | 560 | { |
27da23d5 | 561 | dVAR; |
79072805 LW |
562 | OP *kid; |
563 | ||
a0d0e21e | 564 | /* assumes no premature commitment */ |
551405c4 | 565 | if (!o || PL_error_count || (o->op_flags & OPf_WANT) |
5dc0d613 | 566 | || o->op_type == OP_RETURN) |
7e363e51 | 567 | { |
11343788 | 568 | return o; |
7e363e51 | 569 | } |
79072805 | 570 | |
5dc0d613 | 571 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_SCALAR; |
79072805 | 572 | |
11343788 | 573 | switch (o->op_type) { |
79072805 | 574 | case OP_REPEAT: |
11343788 | 575 | scalar(cBINOPo->op_first); |
8990e307 | 576 | break; |
79072805 LW |
577 | case OP_OR: |
578 | case OP_AND: | |
579 | case OP_COND_EXPR: | |
11343788 | 580 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
8990e307 | 581 | scalar(kid); |
79072805 | 582 | break; |
a0d0e21e | 583 | case OP_SPLIT: |
11343788 | 584 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e | 585 | if (!kPMOP->op_pmreplroot) |
12bcd1a6 | 586 | deprecate_old("implicit split to @_"); |
a0d0e21e LW |
587 | } |
588 | /* FALL THROUGH */ | |
79072805 | 589 | case OP_MATCH: |
8782bef2 | 590 | case OP_QR: |
79072805 LW |
591 | case OP_SUBST: |
592 | case OP_NULL: | |
8990e307 | 593 | default: |
11343788 MB |
594 | if (o->op_flags & OPf_KIDS) { |
595 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) | |
8990e307 LW |
596 | scalar(kid); |
597 | } | |
79072805 LW |
598 | break; |
599 | case OP_LEAVE: | |
600 | case OP_LEAVETRY: | |
5dc0d613 | 601 | kid = cLISTOPo->op_first; |
54310121 | 602 | scalar(kid); |
155aba94 | 603 | while ((kid = kid->op_sibling)) { |
54310121 | 604 | if (kid->op_sibling) |
605 | scalarvoid(kid); | |
606 | else | |
607 | scalar(kid); | |
608 | } | |
3280af22 | 609 | WITH_THR(PL_curcop = &PL_compiling); |
54310121 | 610 | break; |
748a9306 | 611 | case OP_SCOPE: |
79072805 | 612 | case OP_LINESEQ: |
8990e307 | 613 | case OP_LIST: |
11343788 | 614 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
615 | if (kid->op_sibling) |
616 | scalarvoid(kid); | |
617 | else | |
618 | scalar(kid); | |
619 | } | |
3280af22 | 620 | WITH_THR(PL_curcop = &PL_compiling); |
79072805 | 621 | break; |
a801c63c RGS |
622 | case OP_SORT: |
623 | if (ckWARN(WARN_VOID)) | |
9014280d | 624 | Perl_warner(aTHX_ packWARN(WARN_VOID), "Useless use of sort in scalar context"); |
79072805 | 625 | } |
11343788 | 626 | return o; |
79072805 LW |
627 | } |
628 | ||
629 | OP * | |
864dbfa3 | 630 | Perl_scalarvoid(pTHX_ OP *o) |
79072805 | 631 | { |
27da23d5 | 632 | dVAR; |
79072805 | 633 | OP *kid; |
e1ec3a88 | 634 | const char* useless = 0; |
8990e307 | 635 | SV* sv; |
2ebea0a1 GS |
636 | U8 want; |
637 | ||
acb36ea4 GS |
638 | if (o->op_type == OP_NEXTSTATE |
639 | || o->op_type == OP_SETSTATE | |
640 | || o->op_type == OP_DBSTATE | |
641 | || (o->op_type == OP_NULL && (o->op_targ == OP_NEXTSTATE | |
642 | || o->op_targ == OP_SETSTATE | |
643 | || o->op_targ == OP_DBSTATE))) | |
2ebea0a1 | 644 | PL_curcop = (COP*)o; /* for warning below */ |
79072805 | 645 | |
54310121 | 646 | /* assumes no premature commitment */ |
2ebea0a1 GS |
647 | want = o->op_flags & OPf_WANT; |
648 | if ((want && want != OPf_WANT_SCALAR) || PL_error_count | |
5dc0d613 | 649 | || o->op_type == OP_RETURN) |
7e363e51 | 650 | { |
11343788 | 651 | return o; |
7e363e51 | 652 | } |
79072805 | 653 | |
b162f9ea | 654 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
655 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
656 | { | |
b162f9ea | 657 | return scalar(o); /* As if inside SASSIGN */ |
7e363e51 | 658 | } |
1c846c1f | 659 | |
5dc0d613 | 660 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_VOID; |
79072805 | 661 | |
11343788 | 662 | switch (o->op_type) { |
79072805 | 663 | default: |
22c35a8c | 664 | if (!(PL_opargs[o->op_type] & OA_FOLDCONST)) |
8990e307 | 665 | break; |
36477c24 | 666 | /* FALL THROUGH */ |
667 | case OP_REPEAT: | |
11343788 | 668 | if (o->op_flags & OPf_STACKED) |
8990e307 | 669 | break; |
5d82c453 GA |
670 | goto func_ops; |
671 | case OP_SUBSTR: | |
672 | if (o->op_private == 4) | |
673 | break; | |
8990e307 LW |
674 | /* FALL THROUGH */ |
675 | case OP_GVSV: | |
676 | case OP_WANTARRAY: | |
677 | case OP_GV: | |
678 | case OP_PADSV: | |
679 | case OP_PADAV: | |
680 | case OP_PADHV: | |
681 | case OP_PADANY: | |
682 | case OP_AV2ARYLEN: | |
8990e307 | 683 | case OP_REF: |
a0d0e21e LW |
684 | case OP_REFGEN: |
685 | case OP_SREFGEN: | |
8990e307 LW |
686 | case OP_DEFINED: |
687 | case OP_HEX: | |
688 | case OP_OCT: | |
689 | case OP_LENGTH: | |
8990e307 LW |
690 | case OP_VEC: |
691 | case OP_INDEX: | |
692 | case OP_RINDEX: | |
693 | case OP_SPRINTF: | |
694 | case OP_AELEM: | |
695 | case OP_AELEMFAST: | |
696 | case OP_ASLICE: | |
8990e307 LW |
697 | case OP_HELEM: |
698 | case OP_HSLICE: | |
699 | case OP_UNPACK: | |
700 | case OP_PACK: | |
8990e307 LW |
701 | case OP_JOIN: |
702 | case OP_LSLICE: | |
703 | case OP_ANONLIST: | |
704 | case OP_ANONHASH: | |
705 | case OP_SORT: | |
706 | case OP_REVERSE: | |
707 | case OP_RANGE: | |
708 | case OP_FLIP: | |
709 | case OP_FLOP: | |
710 | case OP_CALLER: | |
711 | case OP_FILENO: | |
712 | case OP_EOF: | |
713 | case OP_TELL: | |
714 | case OP_GETSOCKNAME: | |
715 | case OP_GETPEERNAME: | |
716 | case OP_READLINK: | |
717 | case OP_TELLDIR: | |
718 | case OP_GETPPID: | |
719 | case OP_GETPGRP: | |
720 | case OP_GETPRIORITY: | |
721 | case OP_TIME: | |
722 | case OP_TMS: | |
723 | case OP_LOCALTIME: | |
724 | case OP_GMTIME: | |
725 | case OP_GHBYNAME: | |
726 | case OP_GHBYADDR: | |
727 | case OP_GHOSTENT: | |
728 | case OP_GNBYNAME: | |
729 | case OP_GNBYADDR: | |
730 | case OP_GNETENT: | |
731 | case OP_GPBYNAME: | |
732 | case OP_GPBYNUMBER: | |
733 | case OP_GPROTOENT: | |
734 | case OP_GSBYNAME: | |
735 | case OP_GSBYPORT: | |
736 | case OP_GSERVENT: | |
737 | case OP_GPWNAM: | |
738 | case OP_GPWUID: | |
739 | case OP_GGRNAM: | |
740 | case OP_GGRGID: | |
741 | case OP_GETLOGIN: | |
78e1b766 | 742 | case OP_PROTOTYPE: |
5d82c453 | 743 | func_ops: |
64aac5a9 | 744 | if (!(o->op_private & (OPpLVAL_INTRO|OPpOUR_INTRO))) |
53e06cf0 | 745 | useless = OP_DESC(o); |
8990e307 LW |
746 | break; |
747 | ||
9f82cd5f YST |
748 | case OP_NOT: |
749 | kid = cUNOPo->op_first; | |
750 | if (kid->op_type != OP_MATCH && kid->op_type != OP_SUBST && | |
751 | kid->op_type != OP_TRANS) { | |
752 | goto func_ops; | |
753 | } | |
754 | useless = "negative pattern binding (!~)"; | |
755 | break; | |
756 | ||
8990e307 LW |
757 | case OP_RV2GV: |
758 | case OP_RV2SV: | |
759 | case OP_RV2AV: | |
760 | case OP_RV2HV: | |
192587c2 | 761 | if (!(o->op_private & (OPpLVAL_INTRO|OPpOUR_INTRO)) && |
11343788 | 762 | (!o->op_sibling || o->op_sibling->op_type != OP_READLINE)) |
8990e307 LW |
763 | useless = "a variable"; |
764 | break; | |
79072805 LW |
765 | |
766 | case OP_CONST: | |
7766f137 | 767 | sv = cSVOPo_sv; |
7a52d87a GS |
768 | if (cSVOPo->op_private & OPpCONST_STRICT) |
769 | no_bareword_allowed(o); | |
770 | else { | |
d008e5eb GS |
771 | if (ckWARN(WARN_VOID)) { |
772 | useless = "a constant"; | |
e7fec78e | 773 | /* don't warn on optimised away booleans, eg |
b5a930ec | 774 | * use constant Foo, 5; Foo || print; */ |
e7fec78e DM |
775 | if (cSVOPo->op_private & OPpCONST_SHORTCIRCUIT) |
776 | useless = 0; | |
960b4253 MG |
777 | /* the constants 0 and 1 are permitted as they are |
778 | conventionally used as dummies in constructs like | |
779 | 1 while some_condition_with_side_effects; */ | |
e7fec78e | 780 | else if (SvNIOK(sv) && (SvNV(sv) == 0.0 || SvNV(sv) == 1.0)) |
d008e5eb GS |
781 | useless = 0; |
782 | else if (SvPOK(sv)) { | |
a52fe3ac A |
783 | /* perl4's way of mixing documentation and code |
784 | (before the invention of POD) was based on a | |
785 | trick to mix nroff and perl code. The trick was | |
786 | built upon these three nroff macros being used in | |
787 | void context. The pink camel has the details in | |
788 | the script wrapman near page 319. */ | |
b15aece3 SP |
789 | if (strnEQ(SvPVX_const(sv), "di", 2) || |
790 | strnEQ(SvPVX_const(sv), "ds", 2) || | |
791 | strnEQ(SvPVX_const(sv), "ig", 2)) | |
d008e5eb GS |
792 | useless = 0; |
793 | } | |
8990e307 LW |
794 | } |
795 | } | |
93c66552 | 796 | op_null(o); /* don't execute or even remember it */ |
79072805 LW |
797 | break; |
798 | ||
799 | case OP_POSTINC: | |
11343788 | 800 | o->op_type = OP_PREINC; /* pre-increment is faster */ |
22c35a8c | 801 | o->op_ppaddr = PL_ppaddr[OP_PREINC]; |
79072805 LW |
802 | break; |
803 | ||
804 | case OP_POSTDEC: | |
11343788 | 805 | o->op_type = OP_PREDEC; /* pre-decrement is faster */ |
22c35a8c | 806 | o->op_ppaddr = PL_ppaddr[OP_PREDEC]; |
79072805 LW |
807 | break; |
808 | ||
679d6c4e HS |
809 | case OP_I_POSTINC: |
810 | o->op_type = OP_I_PREINC; /* pre-increment is faster */ | |
811 | o->op_ppaddr = PL_ppaddr[OP_I_PREINC]; | |
812 | break; | |
813 | ||
814 | case OP_I_POSTDEC: | |
815 | o->op_type = OP_I_PREDEC; /* pre-decrement is faster */ | |
816 | o->op_ppaddr = PL_ppaddr[OP_I_PREDEC]; | |
817 | break; | |
818 | ||
79072805 LW |
819 | case OP_OR: |
820 | case OP_AND: | |
c963b151 | 821 | case OP_DOR: |
79072805 | 822 | case OP_COND_EXPR: |
11343788 | 823 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
824 | scalarvoid(kid); |
825 | break; | |
5aabfad6 | 826 | |
a0d0e21e | 827 | case OP_NULL: |
11343788 | 828 | if (o->op_flags & OPf_STACKED) |
a0d0e21e | 829 | break; |
5aabfad6 | 830 | /* FALL THROUGH */ |
2ebea0a1 GS |
831 | case OP_NEXTSTATE: |
832 | case OP_DBSTATE: | |
79072805 LW |
833 | case OP_ENTERTRY: |
834 | case OP_ENTER: | |
11343788 | 835 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 836 | break; |
54310121 | 837 | /* FALL THROUGH */ |
463ee0b2 | 838 | case OP_SCOPE: |
79072805 LW |
839 | case OP_LEAVE: |
840 | case OP_LEAVETRY: | |
a0d0e21e | 841 | case OP_LEAVELOOP: |
79072805 | 842 | case OP_LINESEQ: |
79072805 | 843 | case OP_LIST: |
11343788 | 844 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
845 | scalarvoid(kid); |
846 | break; | |
c90c0ff4 | 847 | case OP_ENTEREVAL: |
5196be3e | 848 | scalarkids(o); |
c90c0ff4 | 849 | break; |
5aabfad6 | 850 | case OP_REQUIRE: |
c90c0ff4 | 851 | /* all requires must return a boolean value */ |
5196be3e | 852 | o->op_flags &= ~OPf_WANT; |
d6483035 GS |
853 | /* FALL THROUGH */ |
854 | case OP_SCALAR: | |
5196be3e | 855 | return scalar(o); |
a0d0e21e | 856 | case OP_SPLIT: |
11343788 | 857 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e | 858 | if (!kPMOP->op_pmreplroot) |
12bcd1a6 | 859 | deprecate_old("implicit split to @_"); |
a0d0e21e LW |
860 | } |
861 | break; | |
79072805 | 862 | } |
411caa50 | 863 | if (useless && ckWARN(WARN_VOID)) |
9014280d | 864 | Perl_warner(aTHX_ packWARN(WARN_VOID), "Useless use of %s in void context", useless); |
11343788 | 865 | return o; |
79072805 LW |
866 | } |
867 | ||
868 | OP * | |
864dbfa3 | 869 | Perl_listkids(pTHX_ OP *o) |
79072805 | 870 | { |
11343788 | 871 | if (o && o->op_flags & OPf_KIDS) { |
6867be6d | 872 | OP *kid; |
11343788 | 873 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
874 | list(kid); |
875 | } | |
11343788 | 876 | return o; |
79072805 LW |
877 | } |
878 | ||
879 | OP * | |
864dbfa3 | 880 | Perl_list(pTHX_ OP *o) |
79072805 | 881 | { |
27da23d5 | 882 | dVAR; |
79072805 LW |
883 | OP *kid; |
884 | ||
a0d0e21e | 885 | /* assumes no premature commitment */ |
3280af22 | 886 | if (!o || (o->op_flags & OPf_WANT) || PL_error_count |
5dc0d613 | 887 | || o->op_type == OP_RETURN) |
7e363e51 | 888 | { |
11343788 | 889 | return o; |
7e363e51 | 890 | } |
79072805 | 891 | |
b162f9ea | 892 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
893 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
894 | { | |
b162f9ea | 895 | return o; /* As if inside SASSIGN */ |
7e363e51 | 896 | } |
1c846c1f | 897 | |
5dc0d613 | 898 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_LIST; |
79072805 | 899 | |
11343788 | 900 | switch (o->op_type) { |
79072805 LW |
901 | case OP_FLOP: |
902 | case OP_REPEAT: | |
11343788 | 903 | list(cBINOPo->op_first); |
79072805 LW |
904 | break; |
905 | case OP_OR: | |
906 | case OP_AND: | |
907 | case OP_COND_EXPR: | |
11343788 | 908 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
909 | list(kid); |
910 | break; | |
911 | default: | |
912 | case OP_MATCH: | |
8782bef2 | 913 | case OP_QR: |
79072805 LW |
914 | case OP_SUBST: |
915 | case OP_NULL: | |
11343788 | 916 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 917 | break; |
11343788 MB |
918 | if (!o->op_next && cUNOPo->op_first->op_type == OP_FLOP) { |
919 | list(cBINOPo->op_first); | |
920 | return gen_constant_list(o); | |
79072805 LW |
921 | } |
922 | case OP_LIST: | |
11343788 | 923 | listkids(o); |
79072805 LW |
924 | break; |
925 | case OP_LEAVE: | |
926 | case OP_LEAVETRY: | |
5dc0d613 | 927 | kid = cLISTOPo->op_first; |
54310121 | 928 | list(kid); |
155aba94 | 929 | while ((kid = kid->op_sibling)) { |
54310121 | 930 | if (kid->op_sibling) |
931 | scalarvoid(kid); | |
932 | else | |
933 | list(kid); | |
934 | } | |
3280af22 | 935 | WITH_THR(PL_curcop = &PL_compiling); |
54310121 | 936 | break; |
748a9306 | 937 | case OP_SCOPE: |
79072805 | 938 | case OP_LINESEQ: |
11343788 | 939 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
940 | if (kid->op_sibling) |
941 | scalarvoid(kid); | |
942 | else | |
943 | list(kid); | |
944 | } | |
3280af22 | 945 | WITH_THR(PL_curcop = &PL_compiling); |
79072805 | 946 | break; |
c90c0ff4 | 947 | case OP_REQUIRE: |
948 | /* all requires must return a boolean value */ | |
5196be3e MB |
949 | o->op_flags &= ~OPf_WANT; |
950 | return scalar(o); | |
79072805 | 951 | } |
11343788 | 952 | return o; |
79072805 LW |
953 | } |
954 | ||
955 | OP * | |
864dbfa3 | 956 | Perl_scalarseq(pTHX_ OP *o) |
79072805 | 957 | { |
11343788 MB |
958 | if (o) { |
959 | if (o->op_type == OP_LINESEQ || | |
960 | o->op_type == OP_SCOPE || | |
961 | o->op_type == OP_LEAVE || | |
962 | o->op_type == OP_LEAVETRY) | |
463ee0b2 | 963 | { |
6867be6d | 964 | OP *kid; |
11343788 | 965 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
ed6116ce | 966 | if (kid->op_sibling) { |
463ee0b2 | 967 | scalarvoid(kid); |
ed6116ce | 968 | } |
463ee0b2 | 969 | } |
3280af22 | 970 | PL_curcop = &PL_compiling; |
79072805 | 971 | } |
11343788 | 972 | o->op_flags &= ~OPf_PARENS; |
3280af22 | 973 | if (PL_hints & HINT_BLOCK_SCOPE) |
11343788 | 974 | o->op_flags |= OPf_PARENS; |
79072805 | 975 | } |
8990e307 | 976 | else |
11343788 MB |
977 | o = newOP(OP_STUB, 0); |
978 | return o; | |
79072805 LW |
979 | } |
980 | ||
76e3520e | 981 | STATIC OP * |
cea2e8a9 | 982 | S_modkids(pTHX_ OP *o, I32 type) |
79072805 | 983 | { |
11343788 | 984 | if (o && o->op_flags & OPf_KIDS) { |
6867be6d | 985 | OP *kid; |
11343788 | 986 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 | 987 | mod(kid, type); |
79072805 | 988 | } |
11343788 | 989 | return o; |
79072805 LW |
990 | } |
991 | ||
ddeae0f1 DM |
992 | /* Propagate lvalue ("modifiable") context to an op and it's children. |
993 | * 'type' represents the context type, roughly based on the type of op that | |
994 | * would do the modifying, although local() is represented by OP_NULL. | |
995 | * It's responsible for detecting things that can't be modified, flag | |
996 | * things that need to behave specially in an lvalue context (e.g., "$$x = 5" | |
997 | * might have to vivify a reference in $x), and so on. | |
998 | * | |
999 | * For example, "$a+1 = 2" would cause mod() to be called with o being | |
1000 | * OP_ADD and type being OP_SASSIGN, and would output an error. | |
1001 | */ | |
1002 | ||
79072805 | 1003 | OP * |
864dbfa3 | 1004 | Perl_mod(pTHX_ OP *o, I32 type) |
79072805 | 1005 | { |
27da23d5 | 1006 | dVAR; |
79072805 | 1007 | OP *kid; |
ddeae0f1 DM |
1008 | /* -1 = error on localize, 0 = ignore localize, 1 = ok to localize */ |
1009 | int localize = -1; | |
79072805 | 1010 | |
3280af22 | 1011 | if (!o || PL_error_count) |
11343788 | 1012 | return o; |
79072805 | 1013 | |
b162f9ea | 1014 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
1015 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
1016 | { | |
b162f9ea | 1017 | return o; |
7e363e51 | 1018 | } |
1c846c1f | 1019 | |
11343788 | 1020 | switch (o->op_type) { |
68dc0745 | 1021 | case OP_UNDEF: |
ddeae0f1 | 1022 | localize = 0; |
3280af22 | 1023 | PL_modcount++; |
5dc0d613 | 1024 | return o; |
a0d0e21e | 1025 | case OP_CONST: |
11343788 | 1026 | if (!(o->op_private & (OPpCONST_ARYBASE))) |
a0d0e21e | 1027 | goto nomod; |
3280af22 | 1028 | if (PL_eval_start && PL_eval_start->op_type == OP_CONST) { |
7766f137 | 1029 | PL_compiling.cop_arybase = (I32)SvIV(cSVOPx(PL_eval_start)->op_sv); |
3280af22 | 1030 | PL_eval_start = 0; |
a0d0e21e LW |
1031 | } |
1032 | else if (!type) { | |
3280af22 NIS |
1033 | SAVEI32(PL_compiling.cop_arybase); |
1034 | PL_compiling.cop_arybase = 0; | |
a0d0e21e LW |
1035 | } |
1036 | else if (type == OP_REFGEN) | |
1037 | goto nomod; | |
1038 | else | |
cea2e8a9 | 1039 | Perl_croak(aTHX_ "That use of $[ is unsupported"); |
a0d0e21e | 1040 | break; |
5f05dabc | 1041 | case OP_STUB: |
5196be3e | 1042 | if (o->op_flags & OPf_PARENS) |
5f05dabc | 1043 | break; |
1044 | goto nomod; | |
a0d0e21e LW |
1045 | case OP_ENTERSUB: |
1046 | if ((type == OP_UNDEF || type == OP_REFGEN) && | |
11343788 MB |
1047 | !(o->op_flags & OPf_STACKED)) { |
1048 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
22c35a8c | 1049 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 | 1050 | assert(cUNOPo->op_first->op_type == OP_NULL); |
93c66552 | 1051 | op_null(((LISTOP*)cUNOPo->op_first)->op_first);/* disable pushmark */ |
79072805 LW |
1052 | break; |
1053 | } | |
95f0a2f1 SB |
1054 | else if (o->op_private & OPpENTERSUB_NOMOD) |
1055 | return o; | |
cd06dffe GS |
1056 | else { /* lvalue subroutine call */ |
1057 | o->op_private |= OPpLVAL_INTRO; | |
e6438c1a | 1058 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
4978d6d9 | 1059 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) { |
cd06dffe GS |
1060 | /* Backward compatibility mode: */ |
1061 | o->op_private |= OPpENTERSUB_INARGS; | |
1062 | break; | |
1063 | } | |
1064 | else { /* Compile-time error message: */ | |
1065 | OP *kid = cUNOPo->op_first; | |
1066 | CV *cv; | |
1067 | OP *okid; | |
1068 | ||
1069 | if (kid->op_type == OP_PUSHMARK) | |
1070 | goto skip_kids; | |
1071 | if (kid->op_type != OP_NULL || kid->op_targ != OP_LIST) | |
1072 | Perl_croak(aTHX_ | |
1073 | "panic: unexpected lvalue entersub " | |
55140b79 | 1074 | "args: type/targ %ld:%"UVuf, |
3d811634 | 1075 | (long)kid->op_type, (UV)kid->op_targ); |
cd06dffe GS |
1076 | kid = kLISTOP->op_first; |
1077 | skip_kids: | |
1078 | while (kid->op_sibling) | |
1079 | kid = kid->op_sibling; | |
1080 | if (!(kid->op_type == OP_NULL && kid->op_targ == OP_RV2CV)) { | |
1081 | /* Indirect call */ | |
1082 | if (kid->op_type == OP_METHOD_NAMED | |
1083 | || kid->op_type == OP_METHOD) | |
1084 | { | |
87d7fd28 | 1085 | UNOP *newop; |
b2ffa427 | 1086 | |
87d7fd28 | 1087 | NewOp(1101, newop, 1, UNOP); |
349fd7b7 GS |
1088 | newop->op_type = OP_RV2CV; |
1089 | newop->op_ppaddr = PL_ppaddr[OP_RV2CV]; | |
87d7fd28 GS |
1090 | newop->op_first = Nullop; |
1091 | newop->op_next = (OP*)newop; | |
1092 | kid->op_sibling = (OP*)newop; | |
349fd7b7 | 1093 | newop->op_private |= OPpLVAL_INTRO; |
cd06dffe GS |
1094 | break; |
1095 | } | |
b2ffa427 | 1096 | |
cd06dffe GS |
1097 | if (kid->op_type != OP_RV2CV) |
1098 | Perl_croak(aTHX_ | |
1099 | "panic: unexpected lvalue entersub " | |
55140b79 | 1100 | "entry via type/targ %ld:%"UVuf, |
3d811634 | 1101 | (long)kid->op_type, (UV)kid->op_targ); |
cd06dffe GS |
1102 | kid->op_private |= OPpLVAL_INTRO; |
1103 | break; /* Postpone until runtime */ | |
1104 | } | |
b2ffa427 NIS |
1105 | |
1106 | okid = kid; | |
cd06dffe GS |
1107 | kid = kUNOP->op_first; |
1108 | if (kid->op_type == OP_NULL && kid->op_targ == OP_RV2SV) | |
1109 | kid = kUNOP->op_first; | |
b2ffa427 | 1110 | if (kid->op_type == OP_NULL) |
cd06dffe GS |
1111 | Perl_croak(aTHX_ |
1112 | "Unexpected constant lvalue entersub " | |
55140b79 | 1113 | "entry via type/targ %ld:%"UVuf, |
3d811634 | 1114 | (long)kid->op_type, (UV)kid->op_targ); |
cd06dffe GS |
1115 | if (kid->op_type != OP_GV) { |
1116 | /* Restore RV2CV to check lvalueness */ | |
1117 | restore_2cv: | |
1118 | if (kid->op_next && kid->op_next != kid) { /* Happens? */ | |
1119 | okid->op_next = kid->op_next; | |
1120 | kid->op_next = okid; | |
1121 | } | |
1122 | else | |
1123 | okid->op_next = Nullop; | |
1124 | okid->op_type = OP_RV2CV; | |
1125 | okid->op_targ = 0; | |
1126 | okid->op_ppaddr = PL_ppaddr[OP_RV2CV]; | |
1127 | okid->op_private |= OPpLVAL_INTRO; | |
1128 | break; | |
1129 | } | |
b2ffa427 | 1130 | |
638eceb6 | 1131 | cv = GvCV(kGVOP_gv); |
1c846c1f | 1132 | if (!cv) |
cd06dffe GS |
1133 | goto restore_2cv; |
1134 | if (CvLVALUE(cv)) | |
1135 | break; | |
1136 | } | |
1137 | } | |
79072805 LW |
1138 | /* FALL THROUGH */ |
1139 | default: | |
a0d0e21e LW |
1140 | nomod: |
1141 | /* grep, foreach, subcalls, refgen */ | |
1142 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) | |
1143 | break; | |
cea2e8a9 | 1144 | yyerror(Perl_form(aTHX_ "Can't modify %s in %s", |
638bc118 | 1145 | (o->op_type == OP_NULL && (o->op_flags & OPf_SPECIAL) |
cd06dffe GS |
1146 | ? "do block" |
1147 | : (o->op_type == OP_ENTERSUB | |
1148 | ? "non-lvalue subroutine call" | |
53e06cf0 | 1149 | : OP_DESC(o))), |
22c35a8c | 1150 | type ? PL_op_desc[type] : "local")); |
11343788 | 1151 | return o; |
79072805 | 1152 | |
a0d0e21e LW |
1153 | case OP_PREINC: |
1154 | case OP_PREDEC: | |
1155 | case OP_POW: | |
1156 | case OP_MULTIPLY: | |
1157 | case OP_DIVIDE: | |
1158 | case OP_MODULO: | |
1159 | case OP_REPEAT: | |
1160 | case OP_ADD: | |
1161 | case OP_SUBTRACT: | |
1162 | case OP_CONCAT: | |
1163 | case OP_LEFT_SHIFT: | |
1164 | case OP_RIGHT_SHIFT: | |
1165 | case OP_BIT_AND: | |
1166 | case OP_BIT_XOR: | |
1167 | case OP_BIT_OR: | |
1168 | case OP_I_MULTIPLY: | |
1169 | case OP_I_DIVIDE: | |
1170 | case OP_I_MODULO: | |
1171 | case OP_I_ADD: | |
1172 | case OP_I_SUBTRACT: | |
11343788 | 1173 | if (!(o->op_flags & OPf_STACKED)) |
a0d0e21e | 1174 | goto nomod; |
3280af22 | 1175 | PL_modcount++; |
a0d0e21e | 1176 | break; |
b2ffa427 | 1177 | |
79072805 | 1178 | case OP_COND_EXPR: |
ddeae0f1 | 1179 | localize = 1; |
11343788 | 1180 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 | 1181 | mod(kid, type); |
79072805 LW |
1182 | break; |
1183 | ||
1184 | case OP_RV2AV: | |
1185 | case OP_RV2HV: | |
11343788 | 1186 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) { |
e6438c1a | 1187 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
11343788 | 1188 | return o; /* Treat \(@foo) like ordinary list. */ |
748a9306 LW |
1189 | } |
1190 | /* FALL THROUGH */ | |
79072805 | 1191 | case OP_RV2GV: |
5dc0d613 | 1192 | if (scalar_mod_type(o, type)) |
3fe9a6f1 | 1193 | goto nomod; |
11343788 | 1194 | ref(cUNOPo->op_first, o->op_type); |
79072805 | 1195 | /* FALL THROUGH */ |
79072805 LW |
1196 | case OP_ASLICE: |
1197 | case OP_HSLICE: | |
78f9721b SM |
1198 | if (type == OP_LEAVESUBLV) |
1199 | o->op_private |= OPpMAYBE_LVSUB; | |
ddeae0f1 | 1200 | localize = 1; |
78f9721b SM |
1201 | /* FALL THROUGH */ |
1202 | case OP_AASSIGN: | |
93a17b20 LW |
1203 | case OP_NEXTSTATE: |
1204 | case OP_DBSTATE: | |
e6438c1a | 1205 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
79072805 | 1206 | break; |
463ee0b2 | 1207 | case OP_RV2SV: |
aeea060c | 1208 | ref(cUNOPo->op_first, o->op_type); |
ddeae0f1 | 1209 | localize = 1; |
463ee0b2 | 1210 | /* FALL THROUGH */ |
79072805 | 1211 | case OP_GV: |
463ee0b2 | 1212 | case OP_AV2ARYLEN: |
3280af22 | 1213 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 1214 | case OP_SASSIGN: |
bf4b1e52 GS |
1215 | case OP_ANDASSIGN: |
1216 | case OP_ORASSIGN: | |
c963b151 | 1217 | case OP_DORASSIGN: |
ddeae0f1 DM |
1218 | PL_modcount++; |
1219 | break; | |
1220 | ||
8990e307 | 1221 | case OP_AELEMFAST: |
6a077020 | 1222 | localize = -1; |
3280af22 | 1223 | PL_modcount++; |
8990e307 LW |
1224 | break; |
1225 | ||
748a9306 LW |
1226 | case OP_PADAV: |
1227 | case OP_PADHV: | |
e6438c1a | 1228 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
5196be3e MB |
1229 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) |
1230 | return o; /* Treat \(@foo) like ordinary list. */ | |
1231 | if (scalar_mod_type(o, type)) | |
3fe9a6f1 | 1232 | goto nomod; |
78f9721b SM |
1233 | if (type == OP_LEAVESUBLV) |
1234 | o->op_private |= OPpMAYBE_LVSUB; | |
748a9306 LW |
1235 | /* FALL THROUGH */ |
1236 | case OP_PADSV: | |
3280af22 | 1237 | PL_modcount++; |
ddeae0f1 | 1238 | if (!type) /* local() */ |
cea2e8a9 | 1239 | Perl_croak(aTHX_ "Can't localize lexical variable %s", |
dd2155a4 | 1240 | PAD_COMPNAME_PV(o->op_targ)); |
463ee0b2 LW |
1241 | break; |
1242 | ||
748a9306 | 1243 | case OP_PUSHMARK: |
ddeae0f1 | 1244 | localize = 0; |
748a9306 | 1245 | break; |
b2ffa427 | 1246 | |
69969c6f SB |
1247 | case OP_KEYS: |
1248 | if (type != OP_SASSIGN) | |
1249 | goto nomod; | |
5d82c453 GA |
1250 | goto lvalue_func; |
1251 | case OP_SUBSTR: | |
1252 | if (o->op_private == 4) /* don't allow 4 arg substr as lvalue */ | |
1253 | goto nomod; | |
5f05dabc | 1254 | /* FALL THROUGH */ |
a0d0e21e | 1255 | case OP_POS: |
463ee0b2 | 1256 | case OP_VEC: |
78f9721b SM |
1257 | if (type == OP_LEAVESUBLV) |
1258 | o->op_private |= OPpMAYBE_LVSUB; | |
5d82c453 | 1259 | lvalue_func: |
11343788 MB |
1260 | pad_free(o->op_targ); |
1261 | o->op_targ = pad_alloc(o->op_type, SVs_PADMY); | |
5dc0d613 | 1262 | assert(SvTYPE(PAD_SV(o->op_targ)) == SVt_NULL); |
11343788 MB |
1263 | if (o->op_flags & OPf_KIDS) |
1264 | mod(cBINOPo->op_first->op_sibling, type); | |
463ee0b2 | 1265 | break; |
a0d0e21e | 1266 | |
463ee0b2 LW |
1267 | case OP_AELEM: |
1268 | case OP_HELEM: | |
11343788 | 1269 | ref(cBINOPo->op_first, o->op_type); |
68dc0745 | 1270 | if (type == OP_ENTERSUB && |
5dc0d613 MB |
1271 | !(o->op_private & (OPpLVAL_INTRO | OPpDEREF))) |
1272 | o->op_private |= OPpLVAL_DEFER; | |
78f9721b SM |
1273 | if (type == OP_LEAVESUBLV) |
1274 | o->op_private |= OPpMAYBE_LVSUB; | |
ddeae0f1 | 1275 | localize = 1; |
3280af22 | 1276 | PL_modcount++; |
463ee0b2 LW |
1277 | break; |
1278 | ||
1279 | case OP_SCOPE: | |
1280 | case OP_LEAVE: | |
1281 | case OP_ENTER: | |
78f9721b | 1282 | case OP_LINESEQ: |
ddeae0f1 | 1283 | localize = 0; |
11343788 MB |
1284 | if (o->op_flags & OPf_KIDS) |
1285 | mod(cLISTOPo->op_last, type); | |
a0d0e21e LW |
1286 | break; |
1287 | ||
1288 | case OP_NULL: | |
ddeae0f1 | 1289 | localize = 0; |
638bc118 GS |
1290 | if (o->op_flags & OPf_SPECIAL) /* do BLOCK */ |
1291 | goto nomod; | |
1292 | else if (!(o->op_flags & OPf_KIDS)) | |
463ee0b2 | 1293 | break; |
11343788 MB |
1294 | if (o->op_targ != OP_LIST) { |
1295 | mod(cBINOPo->op_first, type); | |
a0d0e21e LW |
1296 | break; |
1297 | } | |
1298 | /* FALL THROUGH */ | |
463ee0b2 | 1299 | case OP_LIST: |
ddeae0f1 | 1300 | localize = 0; |
11343788 | 1301 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1302 | mod(kid, type); |
1303 | break; | |
78f9721b SM |
1304 | |
1305 | case OP_RETURN: | |
1306 | if (type != OP_LEAVESUBLV) | |
1307 | goto nomod; | |
1308 | break; /* mod()ing was handled by ck_return() */ | |
463ee0b2 | 1309 | } |
58d95175 | 1310 | |
8be1be90 AMS |
1311 | /* [20011101.069] File test operators interpret OPf_REF to mean that |
1312 | their argument is a filehandle; thus \stat(".") should not set | |
1313 | it. AMS 20011102 */ | |
1314 | if (type == OP_REFGEN && | |
1315 | PL_check[o->op_type] == MEMBER_TO_FPTR(Perl_ck_ftst)) | |
1316 | return o; | |
1317 | ||
1318 | if (type != OP_LEAVESUBLV) | |
1319 | o->op_flags |= OPf_MOD; | |
1320 | ||
1321 | if (type == OP_AASSIGN || type == OP_SASSIGN) | |
1322 | o->op_flags |= OPf_SPECIAL|OPf_REF; | |
ddeae0f1 DM |
1323 | else if (!type) { /* local() */ |
1324 | switch (localize) { | |
1325 | case 1: | |
1326 | o->op_private |= OPpLVAL_INTRO; | |
1327 | o->op_flags &= ~OPf_SPECIAL; | |
1328 | PL_hints |= HINT_BLOCK_SCOPE; | |
1329 | break; | |
1330 | case 0: | |
1331 | break; | |
1332 | case -1: | |
1333 | if (ckWARN(WARN_SYNTAX)) { | |
1334 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), | |
1335 | "Useless localization of %s", OP_DESC(o)); | |
1336 | } | |
1337 | } | |
463ee0b2 | 1338 | } |
8be1be90 AMS |
1339 | else if (type != OP_GREPSTART && type != OP_ENTERSUB |
1340 | && type != OP_LEAVESUBLV) | |
1341 | o->op_flags |= OPf_REF; | |
11343788 | 1342 | return o; |
463ee0b2 LW |
1343 | } |
1344 | ||
864dbfa3 | 1345 | STATIC bool |
6867be6d | 1346 | S_scalar_mod_type(pTHX_ const OP *o, I32 type) |
3fe9a6f1 | 1347 | { |
1348 | switch (type) { | |
1349 | case OP_SASSIGN: | |
5196be3e | 1350 | if (o->op_type == OP_RV2GV) |
3fe9a6f1 | 1351 | return FALSE; |
1352 | /* FALL THROUGH */ | |
1353 | case OP_PREINC: | |
1354 | case OP_PREDEC: | |
1355 | case OP_POSTINC: | |
1356 | case OP_POSTDEC: | |
1357 | case OP_I_PREINC: | |
1358 | case OP_I_PREDEC: | |
1359 | case OP_I_POSTINC: | |
1360 | case OP_I_POSTDEC: | |
1361 | case OP_POW: | |
1362 | case OP_MULTIPLY: | |
1363 | case OP_DIVIDE: | |
1364 | case OP_MODULO: | |
1365 | case OP_REPEAT: | |
1366 | case OP_ADD: | |
1367 | case OP_SUBTRACT: | |
1368 | case OP_I_MULTIPLY: | |
1369 | case OP_I_DIVIDE: | |
1370 | case OP_I_MODULO: | |
1371 | case OP_I_ADD: | |
1372 | case OP_I_SUBTRACT: | |
1373 | case OP_LEFT_SHIFT: | |
1374 | case OP_RIGHT_SHIFT: | |
1375 | case OP_BIT_AND: | |
1376 | case OP_BIT_XOR: | |
1377 | case OP_BIT_OR: | |
1378 | case OP_CONCAT: | |
1379 | case OP_SUBST: | |
1380 | case OP_TRANS: | |
49e9fbe6 GS |
1381 | case OP_READ: |
1382 | case OP_SYSREAD: | |
1383 | case OP_RECV: | |
bf4b1e52 GS |
1384 | case OP_ANDASSIGN: |
1385 | case OP_ORASSIGN: | |
3fe9a6f1 | 1386 | return TRUE; |
1387 | default: | |
1388 | return FALSE; | |
1389 | } | |
1390 | } | |
1391 | ||
35cd451c | 1392 | STATIC bool |
504618e9 | 1393 | S_is_handle_constructor(pTHX_ const OP *o, I32 numargs) |
35cd451c GS |
1394 | { |
1395 | switch (o->op_type) { | |
1396 | case OP_PIPE_OP: | |
1397 | case OP_SOCKPAIR: | |
504618e9 | 1398 | if (numargs == 2) |
35cd451c GS |
1399 | return TRUE; |
1400 | /* FALL THROUGH */ | |
1401 | case OP_SYSOPEN: | |
1402 | case OP_OPEN: | |
ded8aa31 | 1403 | case OP_SELECT: /* XXX c.f. SelectSaver.pm */ |
35cd451c GS |
1404 | case OP_SOCKET: |
1405 | case OP_OPEN_DIR: | |
1406 | case OP_ACCEPT: | |
504618e9 | 1407 | if (numargs == 1) |
35cd451c GS |
1408 | return TRUE; |
1409 | /* FALL THROUGH */ | |
1410 | default: | |
1411 | return FALSE; | |
1412 | } | |
1413 | } | |
1414 | ||
463ee0b2 | 1415 | OP * |
864dbfa3 | 1416 | Perl_refkids(pTHX_ OP *o, I32 type) |
463ee0b2 | 1417 | { |
11343788 | 1418 | if (o && o->op_flags & OPf_KIDS) { |
6867be6d | 1419 | OP *kid; |
11343788 | 1420 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1421 | ref(kid, type); |
1422 | } | |
11343788 | 1423 | return o; |
463ee0b2 LW |
1424 | } |
1425 | ||
1426 | OP * | |
e4c5ccf3 | 1427 | Perl_doref(pTHX_ OP *o, I32 type, bool set_op_ref) |
463ee0b2 | 1428 | { |
27da23d5 | 1429 | dVAR; |
463ee0b2 | 1430 | OP *kid; |
463ee0b2 | 1431 | |
3280af22 | 1432 | if (!o || PL_error_count) |
11343788 | 1433 | return o; |
463ee0b2 | 1434 | |
11343788 | 1435 | switch (o->op_type) { |
a0d0e21e | 1436 | case OP_ENTERSUB: |
afebc493 | 1437 | if ((type == OP_EXISTS || type == OP_DEFINED || type == OP_LOCK) && |
11343788 MB |
1438 | !(o->op_flags & OPf_STACKED)) { |
1439 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
22c35a8c | 1440 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 | 1441 | assert(cUNOPo->op_first->op_type == OP_NULL); |
93c66552 | 1442 | op_null(((LISTOP*)cUNOPo->op_first)->op_first); /* disable pushmark */ |
11343788 | 1443 | o->op_flags |= OPf_SPECIAL; |
8990e307 LW |
1444 | } |
1445 | break; | |
aeea060c | 1446 | |
463ee0b2 | 1447 | case OP_COND_EXPR: |
11343788 | 1448 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
e4c5ccf3 | 1449 | doref(kid, type, set_op_ref); |
463ee0b2 | 1450 | break; |
8990e307 | 1451 | case OP_RV2SV: |
35cd451c GS |
1452 | if (type == OP_DEFINED) |
1453 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
e4c5ccf3 | 1454 | doref(cUNOPo->op_first, o->op_type, set_op_ref); |
4633a7c4 LW |
1455 | /* FALL THROUGH */ |
1456 | case OP_PADSV: | |
5f05dabc | 1457 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1458 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1459 | : type == OP_RV2HV ? OPpDEREF_HV | |
1460 | : OPpDEREF_SV); | |
11343788 | 1461 | o->op_flags |= OPf_MOD; |
a0d0e21e | 1462 | } |
8990e307 | 1463 | break; |
1c846c1f | 1464 | |
2faa37cc | 1465 | case OP_THREADSV: |
a863c7d1 MB |
1466 | o->op_flags |= OPf_MOD; /* XXX ??? */ |
1467 | break; | |
1468 | ||
463ee0b2 LW |
1469 | case OP_RV2AV: |
1470 | case OP_RV2HV: | |
e4c5ccf3 RH |
1471 | if (set_op_ref) |
1472 | o->op_flags |= OPf_REF; | |
8990e307 | 1473 | /* FALL THROUGH */ |
463ee0b2 | 1474 | case OP_RV2GV: |
35cd451c GS |
1475 | if (type == OP_DEFINED) |
1476 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
e4c5ccf3 | 1477 | doref(cUNOPo->op_first, o->op_type, set_op_ref); |
463ee0b2 | 1478 | break; |
8990e307 | 1479 | |
463ee0b2 LW |
1480 | case OP_PADAV: |
1481 | case OP_PADHV: | |
e4c5ccf3 RH |
1482 | if (set_op_ref) |
1483 | o->op_flags |= OPf_REF; | |
79072805 | 1484 | break; |
aeea060c | 1485 | |
8990e307 | 1486 | case OP_SCALAR: |
79072805 | 1487 | case OP_NULL: |
11343788 | 1488 | if (!(o->op_flags & OPf_KIDS)) |
463ee0b2 | 1489 | break; |
e4c5ccf3 | 1490 | doref(cBINOPo->op_first, type, set_op_ref); |
79072805 LW |
1491 | break; |
1492 | case OP_AELEM: | |
1493 | case OP_HELEM: | |
e4c5ccf3 | 1494 | doref(cBINOPo->op_first, o->op_type, set_op_ref); |
5f05dabc | 1495 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1496 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1497 | : type == OP_RV2HV ? OPpDEREF_HV | |
1498 | : OPpDEREF_SV); | |
11343788 | 1499 | o->op_flags |= OPf_MOD; |
8990e307 | 1500 | } |
79072805 LW |
1501 | break; |
1502 | ||
463ee0b2 | 1503 | case OP_SCOPE: |
79072805 | 1504 | case OP_LEAVE: |
e4c5ccf3 RH |
1505 | set_op_ref = FALSE; |
1506 | /* FALL THROUGH */ | |
79072805 | 1507 | case OP_ENTER: |
8990e307 | 1508 | case OP_LIST: |
11343788 | 1509 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1510 | break; |
e4c5ccf3 | 1511 | doref(cLISTOPo->op_last, type, set_op_ref); |
79072805 | 1512 | break; |
a0d0e21e LW |
1513 | default: |
1514 | break; | |
79072805 | 1515 | } |
11343788 | 1516 | return scalar(o); |
8990e307 | 1517 | |
79072805 LW |
1518 | } |
1519 | ||
09bef843 SB |
1520 | STATIC OP * |
1521 | S_dup_attrlist(pTHX_ OP *o) | |
1522 | { | |
1523 | OP *rop = Nullop; | |
1524 | ||
1525 | /* An attrlist is either a simple OP_CONST or an OP_LIST with kids, | |
1526 | * where the first kid is OP_PUSHMARK and the remaining ones | |
1527 | * are OP_CONST. We need to push the OP_CONST values. | |
1528 | */ | |
1529 | if (o->op_type == OP_CONST) | |
1530 | rop = newSVOP(OP_CONST, o->op_flags, SvREFCNT_inc(cSVOPo->op_sv)); | |
1531 | else { | |
1532 | assert((o->op_type == OP_LIST) && (o->op_flags & OPf_KIDS)); | |
1533 | for (o = cLISTOPo->op_first; o; o=o->op_sibling) { | |
1534 | if (o->op_type == OP_CONST) | |
1535 | rop = append_elem(OP_LIST, rop, | |
1536 | newSVOP(OP_CONST, o->op_flags, | |
1537 | SvREFCNT_inc(cSVOPo->op_sv))); | |
1538 | } | |
1539 | } | |
1540 | return rop; | |
1541 | } | |
1542 | ||
1543 | STATIC void | |
95f0a2f1 | 1544 | S_apply_attrs(pTHX_ HV *stash, SV *target, OP *attrs, bool for_my) |
09bef843 | 1545 | { |
27da23d5 | 1546 | dVAR; |
09bef843 SB |
1547 | SV *stashsv; |
1548 | ||
1549 | /* fake up C<use attributes $pkg,$rv,@attrs> */ | |
1550 | ENTER; /* need to protect against side-effects of 'use' */ | |
1551 | SAVEINT(PL_expect); | |
5aaec2b4 | 1552 | stashsv = stash ? newSVhek(HvNAME_HEK(stash)) : &PL_sv_no; |
e4783991 | 1553 | |
09bef843 | 1554 | #define ATTRSMODULE "attributes" |
95f0a2f1 SB |
1555 | #define ATTRSMODULE_PM "attributes.pm" |
1556 | ||
1557 | if (for_my) { | |
95f0a2f1 | 1558 | /* Don't force the C<use> if we don't need it. */ |
551405c4 | 1559 | SV * const * const svp = hv_fetch(GvHVn(PL_incgv), ATTRSMODULE_PM, |
95f0a2f1 SB |
1560 | sizeof(ATTRSMODULE_PM)-1, 0); |
1561 | if (svp && *svp != &PL_sv_undef) | |
1562 | ; /* already in %INC */ | |
1563 | else | |
1564 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, | |
1565 | newSVpvn(ATTRSMODULE, sizeof(ATTRSMODULE)-1), | |
1566 | Nullsv); | |
1567 | } | |
1568 | else { | |
1569 | Perl_load_module(aTHX_ PERL_LOADMOD_IMPORT_OPS, | |
1570 | newSVpvn(ATTRSMODULE, sizeof(ATTRSMODULE)-1), | |
1571 | Nullsv, | |
1572 | prepend_elem(OP_LIST, | |
1573 | newSVOP(OP_CONST, 0, stashsv), | |
1574 | prepend_elem(OP_LIST, | |
1575 | newSVOP(OP_CONST, 0, | |
1576 | newRV(target)), | |
1577 | dup_attrlist(attrs)))); | |
1578 | } | |
09bef843 SB |
1579 | LEAVE; |
1580 | } | |
1581 | ||
95f0a2f1 SB |
1582 | STATIC void |
1583 | S_apply_attrs_my(pTHX_ HV *stash, OP *target, OP *attrs, OP **imopsp) | |
1584 | { | |
1585 | OP *pack, *imop, *arg; | |
1586 | SV *meth, *stashsv; | |
1587 | ||
1588 | if (!attrs) | |
1589 | return; | |
1590 | ||
1591 | assert(target->op_type == OP_PADSV || | |
1592 | target->op_type == OP_PADHV || | |
1593 | target->op_type == OP_PADAV); | |
1594 | ||
1595 | /* Ensure that attributes.pm is loaded. */ | |
dd2155a4 | 1596 | apply_attrs(stash, PAD_SV(target->op_targ), attrs, TRUE); |
95f0a2f1 SB |
1597 | |
1598 | /* Need package name for method call. */ | |
1599 | pack = newSVOP(OP_CONST, 0, newSVpvn(ATTRSMODULE, sizeof(ATTRSMODULE)-1)); | |
1600 | ||
1601 | /* Build up the real arg-list. */ | |
5aaec2b4 NC |
1602 | stashsv = stash ? newSVhek(HvNAME_HEK(stash)) : &PL_sv_no; |
1603 | ||
95f0a2f1 SB |
1604 | arg = newOP(OP_PADSV, 0); |
1605 | arg->op_targ = target->op_targ; | |
1606 | arg = prepend_elem(OP_LIST, | |
1607 | newSVOP(OP_CONST, 0, stashsv), | |
1608 | prepend_elem(OP_LIST, | |
1609 | newUNOP(OP_REFGEN, 0, | |
1610 | mod(arg, OP_REFGEN)), | |
1611 | dup_attrlist(attrs))); | |
1612 | ||
1613 | /* Fake up a method call to import */ | |
427d62a4 | 1614 | meth = newSVpvn_share("import", 6, 0); |
95f0a2f1 SB |
1615 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL|OPf_WANT_VOID, |
1616 | append_elem(OP_LIST, | |
1617 | prepend_elem(OP_LIST, pack, list(arg)), | |
1618 | newSVOP(OP_METHOD_NAMED, 0, meth))); | |
1619 | imop->op_private |= OPpENTERSUB_NOMOD; | |
1620 | ||
1621 | /* Combine the ops. */ | |
1622 | *imopsp = append_elem(OP_LIST, *imopsp, imop); | |
1623 | } | |
1624 | ||
1625 | /* | |
1626 | =notfor apidoc apply_attrs_string | |
1627 | ||
1628 | Attempts to apply a list of attributes specified by the C<attrstr> and | |
1629 | C<len> arguments to the subroutine identified by the C<cv> argument which | |
1630 | is expected to be associated with the package identified by the C<stashpv> | |
1631 | argument (see L<attributes>). It gets this wrong, though, in that it | |
1632 | does not correctly identify the boundaries of the individual attribute | |
1633 | specifications within C<attrstr>. This is not really intended for the | |
1634 | public API, but has to be listed here for systems such as AIX which | |
1635 | need an explicit export list for symbols. (It's called from XS code | |
1636 | in support of the C<ATTRS:> keyword from F<xsubpp>.) Patches to fix it | |
1637 | to respect attribute syntax properly would be welcome. | |
1638 | ||
1639 | =cut | |
1640 | */ | |
1641 | ||
be3174d2 | 1642 | void |
6867be6d AL |
1643 | Perl_apply_attrs_string(pTHX_ const char *stashpv, CV *cv, |
1644 | const char *attrstr, STRLEN len) | |
be3174d2 GS |
1645 | { |
1646 | OP *attrs = Nullop; | |
1647 | ||
1648 | if (!len) { | |
1649 | len = strlen(attrstr); | |
1650 | } | |
1651 | ||
1652 | while (len) { | |
1653 | for (; isSPACE(*attrstr) && len; --len, ++attrstr) ; | |
1654 | if (len) { | |
890ce7af | 1655 | const char * const sstr = attrstr; |
be3174d2 GS |
1656 | for (; !isSPACE(*attrstr) && len; --len, ++attrstr) ; |
1657 | attrs = append_elem(OP_LIST, attrs, | |
1658 | newSVOP(OP_CONST, 0, | |
1659 | newSVpvn(sstr, attrstr-sstr))); | |
1660 | } | |
1661 | } | |
1662 | ||
1663 | Perl_load_module(aTHX_ PERL_LOADMOD_IMPORT_OPS, | |
1664 | newSVpvn(ATTRSMODULE, sizeof(ATTRSMODULE)-1), | |
1665 | Nullsv, prepend_elem(OP_LIST, | |
1666 | newSVOP(OP_CONST, 0, newSVpv(stashpv,0)), | |
1667 | prepend_elem(OP_LIST, | |
1668 | newSVOP(OP_CONST, 0, | |
1669 | newRV((SV*)cv)), | |
1670 | attrs))); | |
1671 | } | |
1672 | ||
09bef843 | 1673 | STATIC OP * |
95f0a2f1 | 1674 | S_my_kid(pTHX_ OP *o, OP *attrs, OP **imopsp) |
93a17b20 | 1675 | { |
93a17b20 LW |
1676 | I32 type; |
1677 | ||
3280af22 | 1678 | if (!o || PL_error_count) |
11343788 | 1679 | return o; |
93a17b20 | 1680 | |
11343788 | 1681 | type = o->op_type; |
93a17b20 | 1682 | if (type == OP_LIST) { |
6867be6d | 1683 | OP *kid; |
11343788 | 1684 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
95f0a2f1 | 1685 | my_kid(kid, attrs, imopsp); |
dab48698 | 1686 | } else if (type == OP_UNDEF) { |
7766148a | 1687 | return o; |
77ca0c92 LW |
1688 | } else if (type == OP_RV2SV || /* "our" declaration */ |
1689 | type == OP_RV2AV || | |
1690 | type == OP_RV2HV) { /* XXX does this let anything illegal in? */ | |
1ce0b88c RGS |
1691 | if (cUNOPo->op_first->op_type != OP_GV) { /* MJD 20011224 */ |
1692 | yyerror(Perl_form(aTHX_ "Can't declare %s in %s", | |
1693 | OP_DESC(o), PL_in_my == KEY_our ? "our" : "my")); | |
1694 | } else if (attrs) { | |
551405c4 | 1695 | GV * const gv = cGVOPx_gv(cUNOPo->op_first); |
1ce0b88c RGS |
1696 | PL_in_my = FALSE; |
1697 | PL_in_my_stash = Nullhv; | |
1698 | apply_attrs(GvSTASH(gv), | |
1699 | (type == OP_RV2SV ? GvSV(gv) : | |
1700 | type == OP_RV2AV ? (SV*)GvAV(gv) : | |
1701 | type == OP_RV2HV ? (SV*)GvHV(gv) : (SV*)gv), | |
1702 | attrs, FALSE); | |
1703 | } | |
192587c2 | 1704 | o->op_private |= OPpOUR_INTRO; |
77ca0c92 | 1705 | return o; |
95f0a2f1 SB |
1706 | } |
1707 | else if (type != OP_PADSV && | |
93a17b20 LW |
1708 | type != OP_PADAV && |
1709 | type != OP_PADHV && | |
1710 | type != OP_PUSHMARK) | |
1711 | { | |
eb64745e | 1712 | yyerror(Perl_form(aTHX_ "Can't declare %s in \"%s\"", |
53e06cf0 | 1713 | OP_DESC(o), |
eb64745e | 1714 | PL_in_my == KEY_our ? "our" : "my")); |
11343788 | 1715 | return o; |
93a17b20 | 1716 | } |
09bef843 SB |
1717 | else if (attrs && type != OP_PUSHMARK) { |
1718 | HV *stash; | |
09bef843 | 1719 | |
eb64745e GS |
1720 | PL_in_my = FALSE; |
1721 | PL_in_my_stash = Nullhv; | |
1722 | ||
09bef843 | 1723 | /* check for C<my Dog $spot> when deciding package */ |
dd2155a4 DM |
1724 | stash = PAD_COMPNAME_TYPE(o->op_targ); |
1725 | if (!stash) | |
09bef843 | 1726 | stash = PL_curstash; |
95f0a2f1 | 1727 | apply_attrs_my(stash, o, attrs, imopsp); |
09bef843 | 1728 | } |
11343788 MB |
1729 | o->op_flags |= OPf_MOD; |
1730 | o->op_private |= OPpLVAL_INTRO; | |
1731 | return o; | |
93a17b20 LW |
1732 | } |
1733 | ||
1734 | OP * | |
09bef843 SB |
1735 | Perl_my_attrs(pTHX_ OP *o, OP *attrs) |
1736 | { | |
95f0a2f1 SB |
1737 | OP *rops = Nullop; |
1738 | int maybe_scalar = 0; | |
1739 | ||
d2be0de5 | 1740 | /* [perl #17376]: this appears to be premature, and results in code such as |
c754c3d7 | 1741 | C< our(%x); > executing in list mode rather than void mode */ |
d2be0de5 | 1742 | #if 0 |
09bef843 SB |
1743 | if (o->op_flags & OPf_PARENS) |
1744 | list(o); | |
95f0a2f1 SB |
1745 | else |
1746 | maybe_scalar = 1; | |
d2be0de5 YST |
1747 | #else |
1748 | maybe_scalar = 1; | |
1749 | #endif | |
09bef843 SB |
1750 | if (attrs) |
1751 | SAVEFREEOP(attrs); | |
95f0a2f1 SB |
1752 | o = my_kid(o, attrs, &rops); |
1753 | if (rops) { | |
1754 | if (maybe_scalar && o->op_type == OP_PADSV) { | |
1755 | o = scalar(append_list(OP_LIST, (LISTOP*)rops, (LISTOP*)o)); | |
1756 | o->op_private |= OPpLVAL_INTRO; | |
1757 | } | |
1758 | else | |
1759 | o = append_list(OP_LIST, (LISTOP*)o, (LISTOP*)rops); | |
1760 | } | |
eb64745e GS |
1761 | PL_in_my = FALSE; |
1762 | PL_in_my_stash = Nullhv; | |
1763 | return o; | |
09bef843 SB |
1764 | } |
1765 | ||
1766 | OP * | |
1767 | Perl_my(pTHX_ OP *o) | |
1768 | { | |
95f0a2f1 | 1769 | return my_attrs(o, Nullop); |
09bef843 SB |
1770 | } |
1771 | ||
1772 | OP * | |
864dbfa3 | 1773 | Perl_sawparens(pTHX_ OP *o) |
79072805 LW |
1774 | { |
1775 | if (o) | |
1776 | o->op_flags |= OPf_PARENS; | |
1777 | return o; | |
1778 | } | |
1779 | ||
1780 | OP * | |
864dbfa3 | 1781 | Perl_bind_match(pTHX_ I32 type, OP *left, OP *right) |
79072805 | 1782 | { |
11343788 | 1783 | OP *o; |
59f00321 | 1784 | bool ismatchop = 0; |
79072805 | 1785 | |
041457d9 | 1786 | if ( (left->op_type == OP_RV2AV || |
599cee73 PM |
1787 | left->op_type == OP_RV2HV || |
1788 | left->op_type == OP_PADAV || | |
041457d9 DM |
1789 | left->op_type == OP_PADHV) |
1790 | && ckWARN(WARN_MISC)) | |
1791 | { | |
551405c4 | 1792 | const char * const desc = PL_op_desc[(right->op_type == OP_SUBST || |
599cee73 PM |
1793 | right->op_type == OP_TRANS) |
1794 | ? right->op_type : OP_MATCH]; | |
551405c4 | 1795 | const char * const sample = ((left->op_type == OP_RV2AV || |
dff6d3cd GS |
1796 | left->op_type == OP_PADAV) |
1797 | ? "@array" : "%hash"); | |
9014280d | 1798 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
1c846c1f | 1799 | "Applying %s to %s will act on scalar(%s)", |
599cee73 | 1800 | desc, sample, sample); |
2ae324a7 | 1801 | } |
1802 | ||
5cc9e5c9 RH |
1803 | if (right->op_type == OP_CONST && |
1804 | cSVOPx(right)->op_private & OPpCONST_BARE && | |
1805 | cSVOPx(right)->op_private & OPpCONST_STRICT) | |
1806 | { | |
1807 | no_bareword_allowed(right); | |
1808 | } | |
1809 | ||
59f00321 RGS |
1810 | ismatchop = right->op_type == OP_MATCH || |
1811 | right->op_type == OP_SUBST || | |
1812 | right->op_type == OP_TRANS; | |
1813 | if (ismatchop && right->op_private & OPpTARGET_MY) { | |
1814 | right->op_targ = 0; | |
1815 | right->op_private &= ~OPpTARGET_MY; | |
1816 | } | |
1817 | if (!(right->op_flags & OPf_STACKED) && ismatchop) { | |
79072805 | 1818 | right->op_flags |= OPf_STACKED; |
18808301 JH |
1819 | if (right->op_type != OP_MATCH && |
1820 | ! (right->op_type == OP_TRANS && | |
1821 | right->op_private & OPpTRANS_IDENTICAL)) | |
463ee0b2 | 1822 | left = mod(left, right->op_type); |
79072805 | 1823 | if (right->op_type == OP_TRANS) |
11343788 | 1824 | o = newBINOP(OP_NULL, OPf_STACKED, scalar(left), right); |
79072805 | 1825 | else |
11343788 | 1826 | o = prepend_elem(right->op_type, scalar(left), right); |
79072805 | 1827 | if (type == OP_NOT) |
11343788 MB |
1828 | return newUNOP(OP_NOT, 0, scalar(o)); |
1829 | return o; | |
79072805 LW |
1830 | } |
1831 | else | |
1832 | return bind_match(type, left, | |
131b3ad0 | 1833 | pmruntime(newPMOP(OP_MATCH, 0), right, 0)); |
79072805 LW |
1834 | } |
1835 | ||
1836 | OP * | |
864dbfa3 | 1837 | Perl_invert(pTHX_ OP *o) |
79072805 | 1838 | { |
11343788 MB |
1839 | if (!o) |
1840 | return o; | |
79072805 | 1841 | /* XXX need to optimize away NOT NOT here? Or do we let optimizer do it? */ |
11343788 | 1842 | return newUNOP(OP_NOT, OPf_SPECIAL, scalar(o)); |
79072805 LW |
1843 | } |
1844 | ||
1845 | OP * | |
864dbfa3 | 1846 | Perl_scope(pTHX_ OP *o) |
79072805 | 1847 | { |
27da23d5 | 1848 | dVAR; |
79072805 | 1849 | if (o) { |
3280af22 | 1850 | if (o->op_flags & OPf_PARENS || PERLDB_NOOPT || PL_tainting) { |
463ee0b2 LW |
1851 | o = prepend_elem(OP_LINESEQ, newOP(OP_ENTER, 0), o); |
1852 | o->op_type = OP_LEAVE; | |
22c35a8c | 1853 | o->op_ppaddr = PL_ppaddr[OP_LEAVE]; |
463ee0b2 | 1854 | } |
fdb22418 HS |
1855 | else if (o->op_type == OP_LINESEQ) { |
1856 | OP *kid; | |
1857 | o->op_type = OP_SCOPE; | |
1858 | o->op_ppaddr = PL_ppaddr[OP_SCOPE]; | |
1859 | kid = ((LISTOP*)o)->op_first; | |
59110972 | 1860 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) { |
fdb22418 | 1861 | op_null(kid); |
59110972 RH |
1862 | |
1863 | /* The following deals with things like 'do {1 for 1}' */ | |
1864 | kid = kid->op_sibling; | |
1865 | if (kid && | |
1866 | (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE)) | |
1867 | op_null(kid); | |
1868 | } | |
463ee0b2 | 1869 | } |
fdb22418 HS |
1870 | else |
1871 | o = newLISTOP(OP_SCOPE, 0, o, Nullop); | |
79072805 LW |
1872 | } |
1873 | return o; | |
1874 | } | |
1875 | ||
a0d0e21e | 1876 | int |
864dbfa3 | 1877 | Perl_block_start(pTHX_ int full) |
79072805 | 1878 | { |
73d840c0 | 1879 | const int retval = PL_savestack_ix; |
dd2155a4 | 1880 | pad_block_start(full); |
b3ac6de7 | 1881 | SAVEHINTS(); |
3280af22 | 1882 | PL_hints &= ~HINT_BLOCK_SCOPE; |
1c846c1f | 1883 | SAVESPTR(PL_compiling.cop_warnings); |
0453d815 | 1884 | if (! specialWARN(PL_compiling.cop_warnings)) { |
599cee73 PM |
1885 | PL_compiling.cop_warnings = newSVsv(PL_compiling.cop_warnings) ; |
1886 | SAVEFREESV(PL_compiling.cop_warnings) ; | |
1887 | } | |
ac27b0f5 NIS |
1888 | SAVESPTR(PL_compiling.cop_io); |
1889 | if (! specialCopIO(PL_compiling.cop_io)) { | |
1890 | PL_compiling.cop_io = newSVsv(PL_compiling.cop_io) ; | |
1891 | SAVEFREESV(PL_compiling.cop_io) ; | |
1892 | } | |
a0d0e21e LW |
1893 | return retval; |
1894 | } | |
1895 | ||
1896 | OP* | |
864dbfa3 | 1897 | Perl_block_end(pTHX_ I32 floor, OP *seq) |
a0d0e21e | 1898 | { |
6867be6d | 1899 | const int needblockscope = PL_hints & HINT_BLOCK_SCOPE; |
551405c4 | 1900 | OP* const retval = scalarseq(seq); |
e9818f4e | 1901 | LEAVE_SCOPE(floor); |
eb160463 | 1902 | PL_compiling.op_private = (U8)(PL_hints & HINT_PRIVATE_MASK); |
a0d0e21e | 1903 | if (needblockscope) |
3280af22 | 1904 | PL_hints |= HINT_BLOCK_SCOPE; /* propagate out */ |
dd2155a4 | 1905 | pad_leavemy(); |
a0d0e21e LW |
1906 | return retval; |
1907 | } | |
1908 | ||
76e3520e | 1909 | STATIC OP * |
cea2e8a9 | 1910 | S_newDEFSVOP(pTHX) |
54b9620d | 1911 | { |
6867be6d | 1912 | const I32 offset = pad_findmy("$_"); |
59f00321 RGS |
1913 | if (offset == NOT_IN_PAD || PAD_COMPNAME_FLAGS(offset) & SVpad_OUR) { |
1914 | return newSVREF(newGVOP(OP_GV, 0, PL_defgv)); | |
1915 | } | |
1916 | else { | |
551405c4 | 1917 | OP * const o = newOP(OP_PADSV, 0); |
59f00321 RGS |
1918 | o->op_targ = offset; |
1919 | return o; | |
1920 | } | |
54b9620d MB |
1921 | } |
1922 | ||
a0d0e21e | 1923 | void |
864dbfa3 | 1924 | Perl_newPROG(pTHX_ OP *o) |
a0d0e21e | 1925 | { |
3280af22 | 1926 | if (PL_in_eval) { |
b295d113 TH |
1927 | if (PL_eval_root) |
1928 | return; | |
faef0170 HS |
1929 | PL_eval_root = newUNOP(OP_LEAVEEVAL, |
1930 | ((PL_in_eval & EVAL_KEEPERR) | |
1931 | ? OPf_SPECIAL : 0), o); | |
3280af22 | 1932 | PL_eval_start = linklist(PL_eval_root); |
7934575e GS |
1933 | PL_eval_root->op_private |= OPpREFCOUNTED; |
1934 | OpREFCNT_set(PL_eval_root, 1); | |
3280af22 | 1935 | PL_eval_root->op_next = 0; |
a2efc822 | 1936 | CALL_PEEP(PL_eval_start); |
a0d0e21e LW |
1937 | } |
1938 | else { | |
6be89cf9 AE |
1939 | if (o->op_type == OP_STUB) { |
1940 | PL_comppad_name = 0; | |
1941 | PL_compcv = 0; | |
2a4f803a | 1942 | FreeOp(o); |
a0d0e21e | 1943 | return; |
6be89cf9 | 1944 | } |
3280af22 NIS |
1945 | PL_main_root = scope(sawparens(scalarvoid(o))); |
1946 | PL_curcop = &PL_compiling; | |
1947 | PL_main_start = LINKLIST(PL_main_root); | |
7934575e GS |
1948 | PL_main_root->op_private |= OPpREFCOUNTED; |
1949 | OpREFCNT_set(PL_main_root, 1); | |
3280af22 | 1950 | PL_main_root->op_next = 0; |
a2efc822 | 1951 | CALL_PEEP(PL_main_start); |
3280af22 | 1952 | PL_compcv = 0; |
3841441e | 1953 | |
4fdae800 | 1954 | /* Register with debugger */ |
84902520 | 1955 | if (PERLDB_INTER) { |
551405c4 | 1956 | CV * const cv = get_cv("DB::postponed", FALSE); |
3841441e CS |
1957 | if (cv) { |
1958 | dSP; | |
924508f0 | 1959 | PUSHMARK(SP); |
cc49e20b | 1960 | XPUSHs((SV*)CopFILEGV(&PL_compiling)); |
3841441e | 1961 | PUTBACK; |
864dbfa3 | 1962 | call_sv((SV*)cv, G_DISCARD); |
3841441e CS |
1963 | } |
1964 | } | |
79072805 | 1965 | } |
79072805 LW |
1966 | } |
1967 | ||
1968 | OP * | |
864dbfa3 | 1969 | Perl_localize(pTHX_ OP *o, I32 lex) |
79072805 LW |
1970 | { |
1971 | if (o->op_flags & OPf_PARENS) | |
d2be0de5 YST |
1972 | /* [perl #17376]: this appears to be premature, and results in code such as |
1973 | C< our(%x); > executing in list mode rather than void mode */ | |
1974 | #if 0 | |
79072805 | 1975 | list(o); |
d2be0de5 YST |
1976 | #else |
1977 | ; | |
1978 | #endif | |
8990e307 | 1979 | else { |
041457d9 DM |
1980 | if ( PL_bufptr > PL_oldbufptr && PL_bufptr[-1] == ',' |
1981 | && ckWARN(WARN_PARENTHESIS)) | |
64420d0d JH |
1982 | { |
1983 | char *s = PL_bufptr; | |
bac662ee | 1984 | bool sigil = FALSE; |
64420d0d | 1985 | |
8473848f | 1986 | /* some heuristics to detect a potential error */ |
bac662ee | 1987 | while (*s && (strchr(", \t\n", *s))) |
64420d0d | 1988 | s++; |
8473848f | 1989 | |
bac662ee TS |
1990 | while (1) { |
1991 | if (*s && strchr("@$%*", *s) && *++s | |
1992 | && (isALNUM(*s) || UTF8_IS_CONTINUED(*s))) { | |
1993 | s++; | |
1994 | sigil = TRUE; | |
1995 | while (*s && (isALNUM(*s) || UTF8_IS_CONTINUED(*s))) | |
1996 | s++; | |
1997 | while (*s && (strchr(", \t\n", *s))) | |
1998 | s++; | |
1999 | } | |
2000 | else | |
2001 | break; | |
2002 | } | |
2003 | if (sigil && (*s == ';' || *s == '=')) { | |
2004 | Perl_warner(aTHX_ packWARN(WARN_PARENTHESIS), | |
8473848f RGS |
2005 | "Parentheses missing around \"%s\" list", |
2006 | lex ? (PL_in_my == KEY_our ? "our" : "my") | |
2007 | : "local"); | |
2008 | } | |
8990e307 LW |
2009 | } |
2010 | } | |
93a17b20 | 2011 | if (lex) |
eb64745e | 2012 | o = my(o); |
93a17b20 | 2013 | else |
eb64745e GS |
2014 | o = mod(o, OP_NULL); /* a bit kludgey */ |
2015 | PL_in_my = FALSE; | |
2016 | PL_in_my_stash = Nullhv; | |
2017 | return o; | |
79072805 LW |
2018 | } |
2019 | ||
2020 | OP * | |
864dbfa3 | 2021 | Perl_jmaybe(pTHX_ OP *o) |
79072805 LW |
2022 | { |
2023 | if (o->op_type == OP_LIST) { | |
554b3eca | 2024 | OP *o2; |
554b3eca | 2025 | o2 = newSVREF(newGVOP(OP_GV, 0, gv_fetchpv(";", TRUE, SVt_PV))), |
554b3eca | 2026 | o = convert(OP_JOIN, 0, prepend_elem(OP_LIST, o2, o)); |
79072805 LW |
2027 | } |
2028 | return o; | |
2029 | } | |
2030 | ||
2031 | OP * | |
864dbfa3 | 2032 | Perl_fold_constants(pTHX_ register OP *o) |
79072805 | 2033 | { |
27da23d5 | 2034 | dVAR; |
79072805 LW |
2035 | register OP *curop; |
2036 | I32 type = o->op_type; | |
748a9306 | 2037 | SV *sv; |
79072805 | 2038 | |
22c35a8c | 2039 | if (PL_opargs[type] & OA_RETSCALAR) |
79072805 | 2040 | scalar(o); |
b162f9ea | 2041 | if (PL_opargs[type] & OA_TARGET && !o->op_targ) |
ed6116ce | 2042 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 | 2043 | |
eac055e9 GS |
2044 | /* integerize op, unless it happens to be C<-foo>. |
2045 | * XXX should pp_i_negate() do magic string negation instead? */ | |
2046 | if ((PL_opargs[type] & OA_OTHERINT) && (PL_hints & HINT_INTEGER) | |
2047 | && !(type == OP_NEGATE && cUNOPo->op_first->op_type == OP_CONST | |
2048 | && (cUNOPo->op_first->op_private & OPpCONST_BARE))) | |
2049 | { | |
22c35a8c | 2050 | o->op_ppaddr = PL_ppaddr[type = ++(o->op_type)]; |
eac055e9 | 2051 | } |
85e6fe83 | 2052 | |
22c35a8c | 2053 | if (!(PL_opargs[type] & OA_FOLDCONST)) |
79072805 LW |
2054 | goto nope; |
2055 | ||
de939608 | 2056 | switch (type) { |
7a52d87a GS |
2057 | case OP_NEGATE: |
2058 | /* XXX might want a ck_negate() for this */ | |
2059 | cUNOPo->op_first->op_private &= ~OPpCONST_STRICT; | |
2060 | break; | |
de939608 CS |
2061 | case OP_SPRINTF: |
2062 | case OP_UCFIRST: | |
2063 | case OP_LCFIRST: | |
2064 | case OP_UC: | |
2065 | case OP_LC: | |
69dcf70c MB |
2066 | case OP_SLT: |
2067 | case OP_SGT: | |
2068 | case OP_SLE: | |
2069 | case OP_SGE: | |
2070 | case OP_SCMP: | |
2de3dbcc JH |
2071 | /* XXX what about the numeric ops? */ |
2072 | if (PL_hints & HINT_LOCALE) | |
de939608 CS |
2073 | goto nope; |
2074 | } | |
2075 | ||
3280af22 | 2076 | if (PL_error_count) |
a0d0e21e LW |
2077 | goto nope; /* Don't try to run w/ errors */ |
2078 | ||
79072805 | 2079 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
11fa937b GS |
2080 | if ((curop->op_type != OP_CONST || |
2081 | (curop->op_private & OPpCONST_BARE)) && | |
7a52d87a GS |
2082 | curop->op_type != OP_LIST && |
2083 | curop->op_type != OP_SCALAR && | |
2084 | curop->op_type != OP_NULL && | |
2085 | curop->op_type != OP_PUSHMARK) | |
2086 | { | |
79072805 LW |
2087 | goto nope; |
2088 | } | |
2089 | } | |
2090 | ||
2091 | curop = LINKLIST(o); | |
2092 | o->op_next = 0; | |
533c011a | 2093 | PL_op = curop; |
cea2e8a9 | 2094 | CALLRUNOPS(aTHX); |
3280af22 | 2095 | sv = *(PL_stack_sp--); |
748a9306 | 2096 | if (o->op_targ && sv == PAD_SV(o->op_targ)) /* grab pad temp? */ |
dd2155a4 | 2097 | pad_swipe(o->op_targ, FALSE); |
748a9306 LW |
2098 | else if (SvTEMP(sv)) { /* grab mortal temp? */ |
2099 | (void)SvREFCNT_inc(sv); | |
2100 | SvTEMP_off(sv); | |
85e6fe83 | 2101 | } |
79072805 LW |
2102 | op_free(o); |
2103 | if (type == OP_RV2GV) | |
b1cb66bf | 2104 | return newGVOP(OP_GV, 0, (GV*)sv); |
52a96ae6 | 2105 | return newSVOP(OP_CONST, 0, sv); |
aeea060c | 2106 | |
79072805 | 2107 | nope: |
79072805 LW |
2108 | return o; |
2109 | } | |
2110 | ||
2111 | OP * | |
864dbfa3 | 2112 | Perl_gen_constant_list(pTHX_ register OP *o) |
79072805 | 2113 | { |
27da23d5 | 2114 | dVAR; |
79072805 | 2115 | register OP *curop; |
6867be6d | 2116 | const I32 oldtmps_floor = PL_tmps_floor; |
79072805 | 2117 | |
a0d0e21e | 2118 | list(o); |
3280af22 | 2119 | if (PL_error_count) |
a0d0e21e LW |
2120 | return o; /* Don't attempt to run with errors */ |
2121 | ||
533c011a | 2122 | PL_op = curop = LINKLIST(o); |
a0d0e21e | 2123 | o->op_next = 0; |
a2efc822 | 2124 | CALL_PEEP(curop); |
cea2e8a9 GS |
2125 | pp_pushmark(); |
2126 | CALLRUNOPS(aTHX); | |
533c011a | 2127 | PL_op = curop; |
cea2e8a9 | 2128 | pp_anonlist(); |
3280af22 | 2129 | PL_tmps_floor = oldtmps_floor; |
79072805 LW |
2130 | |
2131 | o->op_type = OP_RV2AV; | |
22c35a8c | 2132 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
fb53bbb2 SG |
2133 | o->op_flags &= ~OPf_REF; /* treat \(1..2) like an ordinary list */ |
2134 | o->op_flags |= OPf_PARENS; /* and flatten \(1..2,3) */ | |
2814eb74 | 2135 | o->op_opt = 0; /* needs to be revisited in peep() */ |
79072805 | 2136 | curop = ((UNOP*)o)->op_first; |
3280af22 | 2137 | ((UNOP*)o)->op_first = newSVOP(OP_CONST, 0, SvREFCNT_inc(*PL_stack_sp--)); |
79072805 | 2138 | op_free(curop); |
79072805 LW |
2139 | linklist(o); |
2140 | return list(o); | |
2141 | } | |
2142 | ||
2143 | OP * | |
864dbfa3 | 2144 | Perl_convert(pTHX_ I32 type, I32 flags, OP *o) |
79072805 | 2145 | { |
27da23d5 | 2146 | dVAR; |
11343788 MB |
2147 | if (!o || o->op_type != OP_LIST) |
2148 | o = newLISTOP(OP_LIST, 0, o, Nullop); | |
748a9306 | 2149 | else |
5dc0d613 | 2150 | o->op_flags &= ~OPf_WANT; |
79072805 | 2151 | |
22c35a8c | 2152 | if (!(PL_opargs[type] & OA_MARK)) |
93c66552 | 2153 | op_null(cLISTOPo->op_first); |
8990e307 | 2154 | |
eb160463 | 2155 | o->op_type = (OPCODE)type; |
22c35a8c | 2156 | o->op_ppaddr = PL_ppaddr[type]; |
11343788 | 2157 | o->op_flags |= flags; |
79072805 | 2158 | |
11343788 | 2159 | o = CHECKOP(type, o); |
fe2774ed | 2160 | if (o->op_type != (unsigned)type) |
11343788 | 2161 | return o; |
79072805 | 2162 | |
11343788 | 2163 | return fold_constants(o); |
79072805 LW |
2164 | } |
2165 | ||
2166 | /* List constructors */ | |
2167 | ||
2168 | OP * | |
864dbfa3 | 2169 | Perl_append_elem(pTHX_ I32 type, OP *first, OP *last) |
79072805 LW |
2170 | { |
2171 | if (!first) | |
2172 | return last; | |
8990e307 LW |
2173 | |
2174 | if (!last) | |
79072805 | 2175 | return first; |
8990e307 | 2176 | |
fe2774ed | 2177 | if (first->op_type != (unsigned)type |
155aba94 GS |
2178 | || (type == OP_LIST && (first->op_flags & OPf_PARENS))) |
2179 | { | |
2180 | return newLISTOP(type, 0, first, last); | |
2181 | } | |
79072805 | 2182 | |
a0d0e21e LW |
2183 | if (first->op_flags & OPf_KIDS) |
2184 | ((LISTOP*)first)->op_last->op_sibling = last; | |
2185 | else { | |
2186 | first->op_flags |= OPf_KIDS; | |
2187 | ((LISTOP*)first)->op_first = last; | |
2188 | } | |
2189 | ((LISTOP*)first)->op_last = last; | |
a0d0e21e | 2190 | return first; |
79072805 LW |
2191 | } |
2192 | ||
2193 | OP * | |
864dbfa3 | 2194 | Perl_append_list(pTHX_ I32 type, LISTOP *first, LISTOP *last) |
79072805 LW |
2195 | { |
2196 | if (!first) | |
2197 | return (OP*)last; | |
8990e307 LW |
2198 | |
2199 | if (!last) | |
79072805 | 2200 | return (OP*)first; |
8990e307 | 2201 | |
fe2774ed | 2202 | if (first->op_type != (unsigned)type) |
79072805 | 2203 | return prepend_elem(type, (OP*)first, (OP*)last); |
8990e307 | 2204 | |
fe2774ed | 2205 | if (last->op_type != (unsigned)type) |
79072805 LW |
2206 | return append_elem(type, (OP*)first, (OP*)last); |
2207 | ||
2208 | first->op_last->op_sibling = last->op_first; | |
2209 | first->op_last = last->op_last; | |
117dada2 | 2210 | first->op_flags |= (last->op_flags & OPf_KIDS); |
1c846c1f | 2211 | |
238a4c30 NIS |
2212 | FreeOp(last); |
2213 | ||
79072805 LW |
2214 | return (OP*)first; |
2215 | } | |
2216 | ||
2217 | OP * | |
864dbfa3 | 2218 | Perl_prepend_elem(pTHX_ I32 type, OP *first, OP *last) |
79072805 LW |
2219 | { |
2220 | if (!first) | |
2221 | return last; | |
8990e307 LW |
2222 | |
2223 | if (!last) | |
79072805 | 2224 | return first; |
8990e307 | 2225 | |
fe2774ed | 2226 | if (last->op_type == (unsigned)type) { |
8990e307 LW |
2227 | if (type == OP_LIST) { /* already a PUSHMARK there */ |
2228 | first->op_sibling = ((LISTOP*)last)->op_first->op_sibling; | |
2229 | ((LISTOP*)last)->op_first->op_sibling = first; | |
36a5d4ba DC |
2230 | if (!(first->op_flags & OPf_PARENS)) |
2231 | last->op_flags &= ~OPf_PARENS; | |
8990e307 LW |
2232 | } |
2233 | else { | |
2234 | if (!(last->op_flags & OPf_KIDS)) { | |
2235 | ((LISTOP*)last)->op_last = first; | |
2236 | last->op_flags |= OPf_KIDS; | |
2237 | } | |
2238 | first->op_sibling = ((LISTOP*)last)->op_first; | |
2239 | ((LISTOP*)last)->op_first = first; | |
79072805 | 2240 | } |
117dada2 | 2241 | last->op_flags |= OPf_KIDS; |
79072805 LW |
2242 | return last; |
2243 | } | |
2244 | ||
2245 | return newLISTOP(type, 0, first, last); | |
2246 | } | |
2247 | ||
2248 | /* Constructors */ | |
2249 | ||
2250 | OP * | |
864dbfa3 | 2251 | Perl_newNULLLIST(pTHX) |
79072805 | 2252 | { |
8990e307 LW |
2253 | return newOP(OP_STUB, 0); |
2254 | } | |
2255 | ||
2256 | OP * | |
864dbfa3 | 2257 | Perl_force_list(pTHX_ OP *o) |
8990e307 | 2258 | { |
11343788 MB |
2259 | if (!o || o->op_type != OP_LIST) |
2260 | o = newLISTOP(OP_LIST, 0, o, Nullop); | |
93c66552 | 2261 | op_null(o); |
11343788 | 2262 | return o; |
79072805 LW |
2263 | } |
2264 | ||
2265 | OP * | |
864dbfa3 | 2266 | Perl_newLISTOP(pTHX_ I32 type, I32 flags, OP *first, OP *last) |
79072805 | 2267 | { |
27da23d5 | 2268 | dVAR; |
79072805 LW |
2269 | LISTOP *listop; |
2270 | ||
b7dc083c | 2271 | NewOp(1101, listop, 1, LISTOP); |
79072805 | 2272 | |
eb160463 | 2273 | listop->op_type = (OPCODE)type; |
22c35a8c | 2274 | listop->op_ppaddr = PL_ppaddr[type]; |
117dada2 SM |
2275 | if (first || last) |
2276 | flags |= OPf_KIDS; | |
eb160463 | 2277 | listop->op_flags = (U8)flags; |
79072805 LW |
2278 | |
2279 | if (!last && first) | |
2280 | last = first; | |
2281 | else if (!first && last) | |
2282 | first = last; | |
8990e307 LW |
2283 | else if (first) |
2284 | first->op_sibling = last; | |
79072805 LW |
2285 | listop->op_first = first; |
2286 | listop->op_last = last; | |
8990e307 | 2287 | if (type == OP_LIST) { |
551405c4 | 2288 | OP* const pushop = newOP(OP_PUSHMARK, 0); |
8990e307 LW |
2289 | pushop->op_sibling = first; |
2290 | listop->op_first = pushop; | |
2291 | listop->op_flags |= OPf_KIDS; | |
2292 | if (!last) | |
2293 | listop->op_last = pushop; | |
2294 | } | |
79072805 | 2295 | |
463d09e6 | 2296 | return CHECKOP(type, listop); |
79072805 LW |
2297 | } |
2298 | ||
2299 | OP * | |
864dbfa3 | 2300 | Perl_newOP(pTHX_ I32 type, I32 flags) |
79072805 | 2301 | { |
27da23d5 | 2302 | dVAR; |
11343788 | 2303 | OP *o; |
b7dc083c | 2304 | NewOp(1101, o, 1, OP); |
eb160463 | 2305 | o->op_type = (OPCODE)type; |
22c35a8c | 2306 | o->op_ppaddr = PL_ppaddr[type]; |
eb160463 | 2307 | o->op_flags = (U8)flags; |
79072805 | 2308 | |
11343788 | 2309 | o->op_next = o; |
eb160463 | 2310 | o->op_private = (U8)(0 | (flags >> 8)); |
22c35a8c | 2311 | if (PL_opargs[type] & OA_RETSCALAR) |
11343788 | 2312 | scalar(o); |
22c35a8c | 2313 | if (PL_opargs[type] & OA_TARGET) |
11343788 MB |
2314 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
2315 | return CHECKOP(type, o); | |
79072805 LW |
2316 | } |
2317 | ||
2318 | OP * | |
864dbfa3 | 2319 | Perl_newUNOP(pTHX_ I32 type, I32 flags, OP *first) |
79072805 | 2320 | { |
27da23d5 | 2321 | dVAR; |
79072805 LW |
2322 | UNOP *unop; |
2323 | ||
93a17b20 | 2324 | if (!first) |
aeea060c | 2325 | first = newOP(OP_STUB, 0); |
22c35a8c | 2326 | if (PL_opargs[type] & OA_MARK) |
8990e307 | 2327 | first = force_list(first); |
93a17b20 | 2328 | |
b7dc083c | 2329 | NewOp(1101, unop, 1, UNOP); |
eb160463 | 2330 | unop->op_type = (OPCODE)type; |
22c35a8c | 2331 | unop->op_ppaddr = PL_ppaddr[type]; |
79072805 | 2332 | unop->op_first = first; |
585ec06d | 2333 | unop->op_flags = (U8)(flags | OPf_KIDS); |
eb160463 | 2334 | unop->op_private = (U8)(1 | (flags >> 8)); |
e50aee73 | 2335 | unop = (UNOP*) CHECKOP(type, unop); |
79072805 LW |
2336 | if (unop->op_next) |
2337 | return (OP*)unop; | |
2338 | ||
a0d0e21e | 2339 | return fold_constants((OP *) unop); |
79072805 LW |
2340 | } |
2341 | ||
2342 | OP * | |
864dbfa3 | 2343 | Perl_newBINOP(pTHX_ I32 type, I32 flags, OP *first, OP *last) |
79072805 | 2344 | { |
27da23d5 | 2345 | dVAR; |
79072805 | 2346 | BINOP *binop; |
b7dc083c | 2347 | NewOp(1101, binop, 1, BINOP); |
79072805 LW |
2348 | |
2349 | if (!first) | |
2350 | first = newOP(OP_NULL, 0); | |
2351 | ||
eb160463 | 2352 | binop->op_type = (OPCODE)type; |
22c35a8c | 2353 | binop->op_ppaddr = PL_ppaddr[type]; |
79072805 | 2354 | binop->op_first = first; |
585ec06d | 2355 | binop->op_flags = (U8)(flags | OPf_KIDS); |
79072805 LW |
2356 | if (!last) { |
2357 | last = first; | |
eb160463 | 2358 | binop->op_private = (U8)(1 | (flags >> 8)); |
79072805 LW |
2359 | } |
2360 | else { | |
eb160463 | 2361 | binop->op_private = (U8)(2 | (flags >> 8)); |
79072805 LW |
2362 | first->op_sibling = last; |
2363 | } | |
2364 | ||
e50aee73 | 2365 | binop = (BINOP*)CHECKOP(type, binop); |
eb160463 | 2366 | if (binop->op_next || binop->op_type != (OPCODE)type) |
79072805 LW |
2367 | return (OP*)binop; |
2368 | ||
7284ab6f | 2369 | binop->op_last = binop->op_first->op_sibling; |
79072805 | 2370 | |
a0d0e21e | 2371 | return fold_constants((OP *)binop); |
79072805 LW |
2372 | } |
2373 | ||
abb2c242 JH |
2374 | static int uvcompare(const void *a, const void *b) __attribute__nonnull__(1) __attribute__nonnull__(2) __attribute__pure__; |
2375 | static int uvcompare(const void *a, const void *b) | |
2b9d42f0 | 2376 | { |
e1ec3a88 | 2377 | if (*((const UV *)a) < (*(const UV *)b)) |
2b9d42f0 | 2378 | return -1; |
e1ec3a88 | 2379 | if (*((const UV *)a) > (*(const UV *)b)) |
2b9d42f0 | 2380 | return 1; |
e1ec3a88 | 2381 | if (*((const UV *)a+1) < (*(const UV *)b+1)) |
2b9d42f0 | 2382 | return -1; |
e1ec3a88 | 2383 | if (*((const UV *)a+1) > (*(const UV *)b+1)) |
2b9d42f0 | 2384 | return 1; |
a0ed51b3 LW |
2385 | return 0; |
2386 | } | |
2387 | ||
79072805 | 2388 | OP * |
864dbfa3 | 2389 | Perl_pmtrans(pTHX_ OP *o, OP *expr, OP *repl) |
79072805 | 2390 | { |
2d03de9c AL |
2391 | SV * const tstr = ((SVOP*)expr)->op_sv; |
2392 | SV * const rstr = ((SVOP*)repl)->op_sv; | |
463ee0b2 LW |
2393 | STRLEN tlen; |
2394 | STRLEN rlen; | |
5c144d81 NC |
2395 | const U8 *t = (U8*)SvPV_const(tstr, tlen); |
2396 | const U8 *r = (U8*)SvPV_const(rstr, rlen); | |
79072805 LW |
2397 | register I32 i; |
2398 | register I32 j; | |
9b877dbb | 2399 | I32 grows = 0; |
79072805 LW |
2400 | register short *tbl; |
2401 | ||
551405c4 AL |
2402 | const I32 complement = o->op_private & OPpTRANS_COMPLEMENT; |
2403 | const I32 squash = o->op_private & OPpTRANS_SQUASH; | |
2404 | I32 del = o->op_private & OPpTRANS_DELETE; | |
800b4dc4 | 2405 | PL_hints |= HINT_BLOCK_SCOPE; |
1c846c1f | 2406 | |
036b4402 GS |
2407 | if (SvUTF8(tstr)) |
2408 | o->op_private |= OPpTRANS_FROM_UTF; | |
1c846c1f NIS |
2409 | |
2410 | if (SvUTF8(rstr)) | |
036b4402 | 2411 | o->op_private |= OPpTRANS_TO_UTF; |
79072805 | 2412 | |
a0ed51b3 | 2413 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { |
551405c4 | 2414 | SV* const listsv = newSVpvn("# comment\n",10); |
a0ed51b3 | 2415 | SV* transv = 0; |
5c144d81 NC |
2416 | const U8* tend = t + tlen; |
2417 | const U8* rend = r + rlen; | |
ba210ebe | 2418 | STRLEN ulen; |
84c133a0 RB |
2419 | UV tfirst = 1; |
2420 | UV tlast = 0; | |
2421 | IV tdiff; | |
2422 | UV rfirst = 1; | |
2423 | UV rlast = 0; | |
2424 | IV rdiff; | |
2425 | IV diff; | |
a0ed51b3 LW |
2426 | I32 none = 0; |
2427 | U32 max = 0; | |
2428 | I32 bits; | |
a0ed51b3 | 2429 | I32 havefinal = 0; |
9c5ffd7c | 2430 | U32 final = 0; |
551405c4 AL |
2431 | const I32 from_utf = o->op_private & OPpTRANS_FROM_UTF; |
2432 | const I32 to_utf = o->op_private & OPpTRANS_TO_UTF; | |
bf4a1e57 JH |
2433 | U8* tsave = NULL; |
2434 | U8* rsave = NULL; | |
2435 | ||
2436 | if (!from_utf) { | |
2437 | STRLEN len = tlen; | |
5c144d81 | 2438 | t = tsave = bytes_to_utf8(t, &len); |
bf4a1e57 JH |
2439 | tend = t + len; |
2440 | } | |
2441 | if (!to_utf && rlen) { | |
2442 | STRLEN len = rlen; | |
5c144d81 | 2443 | r = rsave = bytes_to_utf8(r, &len); |
bf4a1e57 JH |
2444 | rend = r + len; |
2445 | } | |
a0ed51b3 | 2446 | |
2b9d42f0 NIS |
2447 | /* There are several snags with this code on EBCDIC: |
2448 | 1. 0xFF is a legal UTF-EBCDIC byte (there are no illegal bytes). | |
2449 | 2. scan_const() in toke.c has encoded chars in native encoding which makes | |
2450 | ranges at least in EBCDIC 0..255 range the bottom odd. | |
2451 | */ | |
2452 | ||
a0ed51b3 | 2453 | if (complement) { |
89ebb4a3 | 2454 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
2b9d42f0 | 2455 | UV *cp; |
a0ed51b3 | 2456 | UV nextmin = 0; |
a02a5408 | 2457 | Newx(cp, 2*tlen, UV); |
a0ed51b3 | 2458 | i = 0; |
79cb57f6 | 2459 | transv = newSVpvn("",0); |
a0ed51b3 | 2460 | while (t < tend) { |
2b9d42f0 NIS |
2461 | cp[2*i] = utf8n_to_uvuni(t, tend-t, &ulen, 0); |
2462 | t += ulen; | |
2463 | if (t < tend && NATIVE_TO_UTF(*t) == 0xff) { | |
a0ed51b3 | 2464 | t++; |
2b9d42f0 NIS |
2465 | cp[2*i+1] = utf8n_to_uvuni(t, tend-t, &ulen, 0); |
2466 | t += ulen; | |
a0ed51b3 | 2467 | } |
2b9d42f0 NIS |
2468 | else { |
2469 | cp[2*i+1] = cp[2*i]; | |
2470 | } | |
2471 | i++; | |
a0ed51b3 | 2472 | } |
2b9d42f0 | 2473 | qsort(cp, i, 2*sizeof(UV), uvcompare); |
a0ed51b3 | 2474 | for (j = 0; j < i; j++) { |
2b9d42f0 | 2475 | UV val = cp[2*j]; |
a0ed51b3 LW |
2476 | diff = val - nextmin; |
2477 | if (diff > 0) { | |
9041c2e3 | 2478 | t = uvuni_to_utf8(tmpbuf,nextmin); |
dfe13c55 | 2479 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 | 2480 | if (diff > 1) { |
2b9d42f0 | 2481 | U8 range_mark = UTF_TO_NATIVE(0xff); |
9041c2e3 | 2482 | t = uvuni_to_utf8(tmpbuf, val - 1); |
2b9d42f0 | 2483 | sv_catpvn(transv, (char *)&range_mark, 1); |
dfe13c55 | 2484 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 LW |
2485 | } |
2486 | } | |
2b9d42f0 | 2487 | val = cp[2*j+1]; |
a0ed51b3 LW |
2488 | if (val >= nextmin) |
2489 | nextmin = val + 1; | |
2490 | } | |
9041c2e3 | 2491 | t = uvuni_to_utf8(tmpbuf,nextmin); |
dfe13c55 | 2492 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
2b9d42f0 NIS |
2493 | { |
2494 | U8 range_mark = UTF_TO_NATIVE(0xff); | |
2495 | sv_catpvn(transv, (char *)&range_mark, 1); | |
2496 | } | |
b851fbc1 JH |
2497 | t = uvuni_to_utf8_flags(tmpbuf, 0x7fffffff, |
2498 | UNICODE_ALLOW_SUPER); | |
dfe13c55 | 2499 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
93524f2b | 2500 | t = (const U8*)SvPVX_const(transv); |
a0ed51b3 LW |
2501 | tlen = SvCUR(transv); |
2502 | tend = t + tlen; | |
455d824a | 2503 | Safefree(cp); |
a0ed51b3 LW |
2504 | } |
2505 | else if (!rlen && !del) { | |
2506 | r = t; rlen = tlen; rend = tend; | |
4757a243 LW |
2507 | } |
2508 | if (!squash) { | |
05d340b8 | 2509 | if ((!rlen && !del) || t == r || |
12ae5dfc | 2510 | (tlen == rlen && memEQ((char *)t, (char *)r, tlen))) |
01ec43d0 | 2511 | { |
4757a243 | 2512 | o->op_private |= OPpTRANS_IDENTICAL; |
01ec43d0 | 2513 | } |
a0ed51b3 LW |
2514 | } |
2515 | ||
2516 | while (t < tend || tfirst <= tlast) { | |
2517 | /* see if we need more "t" chars */ | |
2518 | if (tfirst > tlast) { | |
9041c2e3 | 2519 | tfirst = (I32)utf8n_to_uvuni(t, tend - t, &ulen, 0); |
a0ed51b3 | 2520 | t += ulen; |
2b9d42f0 | 2521 | if (t < tend && NATIVE_TO_UTF(*t) == 0xff) { /* illegal utf8 val indicates range */ |
ba210ebe | 2522 | t++; |
9041c2e3 | 2523 | tlast = (I32)utf8n_to_uvuni(t, tend - t, &ulen, 0); |
a0ed51b3 LW |
2524 | t += ulen; |
2525 | } | |
2526 | else | |
2527 | tlast = tfirst; | |
2528 | } | |
2529 | ||
2530 | /* now see if we need more "r" chars */ | |
2531 | if (rfirst > rlast) { | |
2532 | if (r < rend) { | |
9041c2e3 | 2533 | rfirst = (I32)utf8n_to_uvuni(r, rend - r, &ulen, 0); |
a0ed51b3 | 2534 | r += ulen; |
2b9d42f0 | 2535 | if (r < rend && NATIVE_TO_UTF(*r) == 0xff) { /* illegal utf8 val indicates range */ |
ba210ebe | 2536 | r++; |
9041c2e3 | 2537 | rlast = (I32)utf8n_to_uvuni(r, rend - r, &ulen, 0); |
a0ed51b3 LW |
2538 | r += ulen; |
2539 | } | |
2540 | else | |
2541 | rlast = rfirst; | |
2542 | } | |
2543 | else { | |
2544 | if (!havefinal++) | |
2545 | final = rlast; | |
2546 | rfirst = rlast = 0xffffffff; | |
2547 | } | |
2548 | } | |
2549 | ||
2550 | /* now see which range will peter our first, if either. */ | |
2551 | tdiff = tlast - tfirst; | |
2552 | rdiff = rlast - rfirst; | |
2553 | ||
2554 | if (tdiff <= rdiff) | |
2555 | diff = tdiff; | |
2556 | else | |
2557 | diff = rdiff; | |
2558 | ||
2559 | if (rfirst == 0xffffffff) { | |
2560 | diff = tdiff; /* oops, pretend rdiff is infinite */ | |
2561 | if (diff > 0) | |
894356b3 GS |
2562 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t%04lx\tXXXX\n", |
2563 | (long)tfirst, (long)tlast); | |
a0ed51b3 | 2564 | else |
894356b3 | 2565 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t\tXXXX\n", (long)tfirst); |
a0ed51b3 LW |
2566 | } |
2567 | else { | |
2568 | if (diff > 0) | |
894356b3 GS |
2569 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t%04lx\t%04lx\n", |
2570 | (long)tfirst, (long)(tfirst + diff), | |
2571 | (long)rfirst); | |
a0ed51b3 | 2572 | else |
894356b3 GS |
2573 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t\t%04lx\n", |
2574 | (long)tfirst, (long)rfirst); | |
a0ed51b3 LW |
2575 | |
2576 | if (rfirst + diff > max) | |
2577 | max = rfirst + diff; | |
9b877dbb | 2578 | if (!grows) |
45005bfb JH |
2579 | grows = (tfirst < rfirst && |
2580 | UNISKIP(tfirst) < UNISKIP(rfirst + diff)); | |
2581 | rfirst += diff + 1; | |
a0ed51b3 LW |
2582 | } |
2583 | tfirst += diff + 1; | |
2584 | } | |
2585 | ||
2586 | none = ++max; | |
2587 | if (del) | |
2588 | del = ++max; | |
2589 | ||
2590 | if (max > 0xffff) | |
2591 | bits = 32; | |
2592 | else if (max > 0xff) | |
2593 | bits = 16; | |
2594 | else | |
2595 | bits = 8; | |
2596 | ||
455d824a | 2597 | Safefree(cPVOPo->op_pv); |
a0ed51b3 LW |
2598 | cSVOPo->op_sv = (SV*)swash_init("utf8", "", listsv, bits, none); |
2599 | SvREFCNT_dec(listsv); | |
2600 | if (transv) | |
2601 | SvREFCNT_dec(transv); | |
2602 | ||
45005bfb | 2603 | if (!del && havefinal && rlen) |
b448e4fe JH |
2604 | (void)hv_store((HV*)SvRV((cSVOPo->op_sv)), "FINAL", 5, |
2605 | newSVuv((UV)final), 0); | |
a0ed51b3 | 2606 | |
9b877dbb | 2607 | if (grows) |
a0ed51b3 LW |
2608 | o->op_private |= OPpTRANS_GROWS; |
2609 | ||
9b877dbb IH |
2610 | if (tsave) |
2611 | Safefree(tsave); | |
2612 | if (rsave) | |
2613 | Safefree(rsave); | |
2614 | ||
a0ed51b3 LW |
2615 | op_free(expr); |
2616 | op_free(repl); | |
2617 | return o; | |
2618 | } | |
2619 | ||
2620 | tbl = (short*)cPVOPo->op_pv; | |
79072805 LW |
2621 | if (complement) { |
2622 | Zero(tbl, 256, short); | |
eb160463 | 2623 | for (i = 0; i < (I32)tlen; i++) |
ec49126f | 2624 | tbl[t[i]] = -1; |
79072805 LW |
2625 | for (i = 0, j = 0; i < 256; i++) { |
2626 | if (!tbl[i]) { | |
eb160463 | 2627 | if (j >= (I32)rlen) { |
a0ed51b3 | 2628 | if (del) |
79072805 LW |
2629 | tbl[i] = -2; |
2630 | else if (rlen) | |
ec49126f | 2631 | tbl[i] = r[j-1]; |
79072805 | 2632 | else |
eb160463 | 2633 | tbl[i] = (short)i; |
79072805 | 2634 | } |
9b877dbb IH |
2635 | else { |
2636 | if (i < 128 && r[j] >= 128) | |
2637 | grows = 1; | |
ec49126f | 2638 | tbl[i] = r[j++]; |
9b877dbb | 2639 | } |
79072805 LW |
2640 | } |
2641 | } | |
05d340b8 JH |
2642 | if (!del) { |
2643 | if (!rlen) { | |
2644 | j = rlen; | |
2645 | if (!squash) | |
2646 | o->op_private |= OPpTRANS_IDENTICAL; | |
2647 | } | |
eb160463 | 2648 | else if (j >= (I32)rlen) |
05d340b8 JH |
2649 | j = rlen - 1; |
2650 | else | |
2651 | cPVOPo->op_pv = (char*)Renew(tbl, 0x101+rlen-j, short); | |
585ec06d | 2652 | tbl[0x100] = (short)(rlen - j); |
eb160463 | 2653 | for (i=0; i < (I32)rlen - j; i++) |
8973db79 JH |
2654 | tbl[0x101+i] = r[j+i]; |
2655 | } | |
79072805 LW |
2656 | } |
2657 | else { | |
a0ed51b3 | 2658 | if (!rlen && !del) { |
79072805 | 2659 | r = t; rlen = tlen; |
5d06d08e | 2660 | if (!squash) |
4757a243 | 2661 | o->op_private |= OPpTRANS_IDENTICAL; |
79072805 | 2662 | } |
94bfe852 RGS |
2663 | else if (!squash && rlen == tlen && memEQ((char*)t, (char*)r, tlen)) { |
2664 | o->op_private |= OPpTRANS_IDENTICAL; | |
2665 | } | |
79072805 LW |
2666 | for (i = 0; i < 256; i++) |
2667 | tbl[i] = -1; | |
eb160463 GS |
2668 | for (i = 0, j = 0; i < (I32)tlen; i++,j++) { |
2669 | if (j >= (I32)rlen) { | |
a0ed51b3 | 2670 | if (del) { |
ec49126f | 2671 | if (tbl[t[i]] == -1) |
2672 | tbl[t[i]] = -2; | |
79072805 LW |
2673 | continue; |
2674 | } | |
2675 | --j; | |
2676 | } | |
9b877dbb IH |
2677 | if (tbl[t[i]] == -1) { |
2678 | if (t[i] < 128 && r[j] >= 128) | |
2679 | grows = 1; | |
ec49126f | 2680 | tbl[t[i]] = r[j]; |
9b877dbb | 2681 | } |
79072805 LW |
2682 | } |
2683 | } | |
9b877dbb IH |
2684 | if (grows) |
2685 | o->op_private |= OPpTRANS_GROWS; | |
79072805 LW |
2686 | op_free(expr); |
2687 | op_free(repl); | |
2688 | ||
11343788 | 2689 | return o; |
79072805 LW |
2690 | } |
2691 | ||
2692 | OP * | |
864dbfa3 | 2693 | Perl_newPMOP(pTHX_ I32 type, I32 flags) |
79072805 | 2694 | { |
27da23d5 | 2695 | dVAR; |
79072805 LW |
2696 | PMOP *pmop; |
2697 | ||
b7dc083c | 2698 | NewOp(1101, pmop, 1, PMOP); |
eb160463 | 2699 | pmop->op_type = (OPCODE)type; |
22c35a8c | 2700 | pmop->op_ppaddr = PL_ppaddr[type]; |
eb160463 GS |
2701 | pmop->op_flags = (U8)flags; |
2702 | pmop->op_private = (U8)(0 | (flags >> 8)); | |
79072805 | 2703 | |
3280af22 | 2704 | if (PL_hints & HINT_RE_TAINT) |
b3eb6a9b | 2705 | pmop->op_pmpermflags |= PMf_RETAINT; |
3280af22 | 2706 | if (PL_hints & HINT_LOCALE) |
b3eb6a9b GS |
2707 | pmop->op_pmpermflags |= PMf_LOCALE; |
2708 | pmop->op_pmflags = pmop->op_pmpermflags; | |
36477c24 | 2709 | |
debc9467 | 2710 | #ifdef USE_ITHREADS |
551405c4 AL |
2711 | if (av_len((AV*) PL_regex_pad[0]) > -1) { |
2712 | SV * const repointer = av_pop((AV*)PL_regex_pad[0]); | |
2713 | pmop->op_pmoffset = SvIV(repointer); | |
2714 | SvREPADTMP_off(repointer); | |
2715 | sv_setiv(repointer,0); | |
2716 | } else { | |
2717 | SV * const repointer = newSViv(0); | |
2718 | av_push(PL_regex_padav,SvREFCNT_inc(repointer)); | |
2719 | pmop->op_pmoffset = av_len(PL_regex_padav); | |
2720 | PL_regex_pad = AvARRAY(PL_regex_padav); | |
13137afc | 2721 | } |
debc9467 | 2722 | #endif |
1eb1540c | 2723 | |
1fcf4c12 | 2724 | /* link into pm list */ |
3280af22 | 2725 | if (type != OP_TRANS && PL_curstash) { |
8d2f4536 NC |
2726 | MAGIC *mg = mg_find((SV*)PL_curstash, PERL_MAGIC_symtab); |
2727 | ||
2728 | if (!mg) { | |
2729 | mg = sv_magicext((SV*)PL_curstash, 0, PERL_MAGIC_symtab, 0, 0, 0); | |
2730 | } | |
2731 | pmop->op_pmnext = (PMOP*)mg->mg_obj; | |
2732 | mg->mg_obj = (SV*)pmop; | |
cb55de95 | 2733 | PmopSTASH_set(pmop,PL_curstash); |
79072805 LW |
2734 | } |
2735 | ||
463d09e6 | 2736 | return CHECKOP(type, pmop); |
79072805 LW |
2737 | } |
2738 | ||
131b3ad0 DM |
2739 | /* Given some sort of match op o, and an expression expr containing a |
2740 | * pattern, either compile expr into a regex and attach it to o (if it's | |
2741 | * constant), or convert expr into a runtime regcomp op sequence (if it's | |
2742 | * not) | |
2743 | * | |
2744 | * isreg indicates that the pattern is part of a regex construct, eg | |
2745 | * $x =~ /pattern/ or split /pattern/, as opposed to $x =~ $pattern or | |
2746 | * split "pattern", which aren't. In the former case, expr will be a list | |
2747 | * if the pattern contains more than one term (eg /a$b/) or if it contains | |
2748 | * a replacement, ie s/// or tr///. | |
2749 | */ | |
2750 | ||
79072805 | 2751 | OP * |
131b3ad0 | 2752 | Perl_pmruntime(pTHX_ OP *o, OP *expr, bool isreg) |
79072805 | 2753 | { |
27da23d5 | 2754 | dVAR; |
79072805 LW |
2755 | PMOP *pm; |
2756 | LOGOP *rcop; | |
ce862d02 | 2757 | I32 repl_has_vars = 0; |
131b3ad0 DM |
2758 | OP* repl = Nullop; |
2759 | bool reglist; | |
2760 | ||
2761 | if (o->op_type == OP_SUBST || o->op_type == OP_TRANS) { | |
2762 | /* last element in list is the replacement; pop it */ | |
2763 | OP* kid; | |
2764 | repl = cLISTOPx(expr)->op_last; | |
2765 | kid = cLISTOPx(expr)->op_first; | |
2766 | while (kid->op_sibling != repl) | |
2767 | kid = kid->op_sibling; | |
2768 | kid->op_sibling = Nullop; | |
2769 | cLISTOPx(expr)->op_last = kid; | |
2770 | } | |
79072805 | 2771 | |
131b3ad0 DM |
2772 | if (isreg && expr->op_type == OP_LIST && |
2773 | cLISTOPx(expr)->op_first->op_sibling == cLISTOPx(expr)->op_last) | |
2774 | { | |
2775 | /* convert single element list to element */ | |
2776 | OP* oe = expr; | |
2777 | expr = cLISTOPx(oe)->op_first->op_sibling; | |
2778 | cLISTOPx(oe)->op_first->op_sibling = Nullop; | |
2779 | cLISTOPx(oe)->op_last = Nullop; | |
2780 | op_free(oe); | |
2781 | } | |
2782 | ||
2783 | if (o->op_type == OP_TRANS) { | |
11343788 | 2784 | return pmtrans(o, expr, repl); |
131b3ad0 DM |
2785 | } |
2786 | ||
2787 | reglist = isreg && expr->op_type == OP_LIST; | |
2788 | if (reglist) | |
2789 | op_null(expr); | |
79072805 | 2790 | |
3280af22 | 2791 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 2792 | pm = (PMOP*)o; |
79072805 LW |
2793 | |
2794 | if (expr->op_type == OP_CONST) { | |
463ee0b2 | 2795 | STRLEN plen; |
79072805 | 2796 | SV *pat = ((SVOP*)expr)->op_sv; |
5c144d81 | 2797 | const char *p = SvPV_const(pat, plen); |
770526c1 | 2798 | if ((o->op_flags & OPf_SPECIAL) && (*p == ' ' && p[1] == '\0')) { |
5c144d81 NC |
2799 | U32 was_readonly = SvREADONLY(pat); |
2800 | ||
2801 | if (was_readonly) { | |
2802 | if (SvFAKE(pat)) { | |
2803 | sv_force_normal_flags(pat, 0); | |
2804 | assert(!SvREADONLY(pat)); | |
2805 | was_readonly = 0; | |
2806 | } else { | |
2807 | SvREADONLY_off(pat); | |
2808 | } | |
2809 | } | |
2810 | ||
93a17b20 | 2811 | sv_setpvn(pat, "\\s+", 3); |
5c144d81 NC |
2812 | |
2813 | SvFLAGS(pat) |= was_readonly; | |
2814 | ||
2815 | p = SvPV_const(pat, plen); | |
79072805 LW |
2816 | pm->op_pmflags |= PMf_SKIPWHITE; |
2817 | } | |
5b71a6a7 | 2818 | if (DO_UTF8(pat)) |
a5961de5 | 2819 | pm->op_pmdynflags |= PMdf_UTF8; |
5c144d81 NC |
2820 | /* FIXME - can we make this function take const char * args? */ |
2821 | PM_SETRE(pm, CALLREGCOMP(aTHX_ (char*)p, (char*)p + plen, pm)); | |
aaa362c4 | 2822 | if (strEQ("\\s+", PM_GETRE(pm)->precomp)) |
85e6fe83 | 2823 | pm->op_pmflags |= PMf_WHITE; |
79072805 LW |
2824 | op_free(expr); |
2825 | } | |
2826 | else { | |
3280af22 | 2827 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) |
1c846c1f | 2828 | expr = newUNOP((!(PL_hints & HINT_RE_EVAL) |
2cd61cdb IZ |
2829 | ? OP_REGCRESET |
2830 | : OP_REGCMAYBE),0,expr); | |
463ee0b2 | 2831 | |
b7dc083c | 2832 | NewOp(1101, rcop, 1, LOGOP); |
79072805 | 2833 | rcop->op_type = OP_REGCOMP; |
22c35a8c | 2834 | rcop->op_ppaddr = PL_ppaddr[OP_REGCOMP]; |
79072805 | 2835 | rcop->op_first = scalar(expr); |
131b3ad0 DM |
2836 | rcop->op_flags |= OPf_KIDS |
2837 | | ((PL_hints & HINT_RE_EVAL) ? OPf_SPECIAL : 0) | |
2838 | | (reglist ? OPf_STACKED : 0); | |
79072805 | 2839 | rcop->op_private = 1; |
11343788 | 2840 | rcop->op_other = o; |
131b3ad0 DM |
2841 | if (reglist) |
2842 | rcop->op_targ = pad_alloc(rcop->op_type, SVs_PADTMP); | |
2843 | ||
b5c19bd7 DM |
2844 | /* /$x/ may cause an eval, since $x might be qr/(?{..})/ */ |
2845 | PL_cv_has_eval = 1; | |
79072805 LW |
2846 | |
2847 | /* establish postfix order */ | |
3280af22 | 2848 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) { |
463ee0b2 LW |
2849 | LINKLIST(expr); |
2850 | rcop->op_next = expr; | |
2851 | ((UNOP*)expr)->op_first->op_next = (OP*)rcop; | |
2852 | } | |
2853 | else { | |
2854 | rcop->op_next = LINKLIST(expr); | |
2855 | expr->op_next = (OP*)rcop; | |
2856 | } | |
79072805 | 2857 | |
11343788 | 2858 | prepend_elem(o->op_type, scalar((OP*)rcop), o); |
79072805 LW |
2859 | } |
2860 | ||
2861 | if (repl) { | |
748a9306 | 2862 | OP *curop; |
0244c3a4 | 2863 | if (pm->op_pmflags & PMf_EVAL) { |
748a9306 | 2864 | curop = 0; |
8bafa735 | 2865 | if (CopLINE(PL_curcop) < (line_t)PL_multi_end) |
eb160463 | 2866 | CopLINE_set(PL_curcop, (line_t)PL_multi_end); |
0244c3a4 | 2867 | } |
748a9306 LW |
2868 | else if (repl->op_type == OP_CONST) |
2869 | curop = repl; | |
79072805 | 2870 | else { |
79072805 LW |
2871 | OP *lastop = 0; |
2872 | for (curop = LINKLIST(repl); curop!=repl; curop = LINKLIST(curop)) { | |
22c35a8c | 2873 | if (PL_opargs[curop->op_type] & OA_DANGEROUS) { |
79072805 | 2874 | if (curop->op_type == OP_GV) { |
638eceb6 | 2875 | GV *gv = cGVOPx_gv(curop); |
ce862d02 | 2876 | repl_has_vars = 1; |
f702bf4a | 2877 | if (strchr("&`'123456789+-\016\022", *GvENAME(gv))) |
79072805 LW |
2878 | break; |
2879 | } | |
2880 | else if (curop->op_type == OP_RV2CV) | |
2881 | break; | |
2882 | else if (curop->op_type == OP_RV2SV || | |
2883 | curop->op_type == OP_RV2AV || | |
2884 | curop->op_type == OP_RV2HV || | |
2885 | curop->op_type == OP_RV2GV) { | |
2886 | if (lastop && lastop->op_type != OP_GV) /*funny deref?*/ | |
2887 | break; | |
2888 | } | |
748a9306 LW |
2889 | else if (curop->op_type == OP_PADSV || |
2890 | curop->op_type == OP_PADAV || | |
2891 | curop->op_type == OP_PADHV || | |
554b3eca | 2892 | curop->op_type == OP_PADANY) { |
ce862d02 | 2893 | repl_has_vars = 1; |
748a9306 | 2894 | } |
1167e5da SM |
2895 | else if (curop->op_type == OP_PUSHRE) |
2896 | ; /* Okay here, dangerous in newASSIGNOP */ | |
79072805 LW |
2897 | else |
2898 | break; | |
2899 | } | |
2900 | lastop = curop; | |
2901 | } | |
748a9306 | 2902 | } |
ce862d02 | 2903 | if (curop == repl |
1c846c1f | 2904 | && !(repl_has_vars |
aaa362c4 RS |
2905 | && (!PM_GETRE(pm) |
2906 | || PM_GETRE(pm)->reganch & ROPT_EVAL_SEEN))) { | |
748a9306 | 2907 | pm->op_pmflags |= PMf_CONST; /* const for long enough */ |
4633a7c4 | 2908 | pm->op_pmpermflags |= PMf_CONST; /* const for long enough */ |
11343788 | 2909 | prepend_elem(o->op_type, scalar(repl), o); |
748a9306 LW |
2910 | } |
2911 | else { | |
aaa362c4 | 2912 | if (curop == repl && !PM_GETRE(pm)) { /* Has variables. */ |
ce862d02 IZ |
2913 | pm->op_pmflags |= PMf_MAYBE_CONST; |
2914 | pm->op_pmpermflags |= PMf_MAYBE_CONST; | |
2915 | } | |
b7dc083c | 2916 | NewOp(1101, rcop, 1, LOGOP); |
748a9306 | 2917 | rcop->op_type = OP_SUBSTCONT; |
22c35a8c | 2918 | rcop->op_ppaddr = PL_ppaddr[OP_SUBSTCONT]; |
748a9306 LW |
2919 | rcop->op_first = scalar(repl); |
2920 | rcop->op_flags |= OPf_KIDS; | |
2921 | rcop->op_private = 1; | |
11343788 | 2922 | rcop->op_other = o; |
748a9306 LW |
2923 | |
2924 | /* establish postfix order */ | |
2925 | rcop->op_next = LINKLIST(repl); | |
2926 | repl->op_next = (OP*)rcop; | |
2927 | ||
2928 | pm->op_pmreplroot = scalar((OP*)rcop); | |
2929 | pm->op_pmreplstart = LINKLIST(rcop); | |
2930 | rcop->op_next = 0; | |
79072805 LW |
2931 | } |
2932 | } | |
2933 | ||
2934 | return (OP*)pm; | |
2935 | } | |
2936 | ||
2937 | OP * | |
864dbfa3 | 2938 | Perl_newSVOP(pTHX_ I32 type, I32 flags, SV *sv) |
79072805 | 2939 | { |
27da23d5 | 2940 | dVAR; |
79072805 | 2941 | SVOP *svop; |
b7dc083c | 2942 | NewOp(1101, svop, 1, SVOP); |
eb160463 | 2943 | svop->op_type = (OPCODE)type; |
22c35a8c | 2944 | svop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2945 | svop->op_sv = sv; |
2946 | svop->op_next = (OP*)svop; | |
eb160463 | 2947 | svop->op_flags = (U8)flags; |
22c35a8c | 2948 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 2949 | scalar((OP*)svop); |
22c35a8c | 2950 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 2951 | svop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2952 | return CHECKOP(type, svop); |
79072805 LW |
2953 | } |
2954 | ||
2955 | OP * | |
350de78d GS |
2956 | Perl_newPADOP(pTHX_ I32 type, I32 flags, SV *sv) |
2957 | { | |
27da23d5 | 2958 | dVAR; |
350de78d GS |
2959 | PADOP *padop; |
2960 | NewOp(1101, padop, 1, PADOP); | |
eb160463 | 2961 | padop->op_type = (OPCODE)type; |
350de78d GS |
2962 | padop->op_ppaddr = PL_ppaddr[type]; |
2963 | padop->op_padix = pad_alloc(type, SVs_PADTMP); | |
dd2155a4 DM |
2964 | SvREFCNT_dec(PAD_SVl(padop->op_padix)); |
2965 | PAD_SETSV(padop->op_padix, sv); | |
ce50c033 AMS |
2966 | if (sv) |
2967 | SvPADTMP_on(sv); | |
350de78d | 2968 | padop->op_next = (OP*)padop; |
eb160463 | 2969 | padop->op_flags = (U8)flags; |
350de78d GS |
2970 | if (PL_opargs[type] & OA_RETSCALAR) |
2971 | scalar((OP*)padop); | |
2972 | if (PL_opargs[type] & OA_TARGET) | |
2973 | padop->op_targ = pad_alloc(type, SVs_PADTMP); | |
2974 | return CHECKOP(type, padop); | |
2975 | } | |
2976 | ||
2977 | OP * | |
864dbfa3 | 2978 | Perl_newGVOP(pTHX_ I32 type, I32 flags, GV *gv) |
79072805 | 2979 | { |
27da23d5 | 2980 | dVAR; |
350de78d | 2981 | #ifdef USE_ITHREADS |
ce50c033 AMS |
2982 | if (gv) |
2983 | GvIN_PAD_on(gv); | |
350de78d GS |
2984 | return newPADOP(type, flags, SvREFCNT_inc(gv)); |
2985 | #else | |
7934575e | 2986 | return newSVOP(type, flags, SvREFCNT_inc(gv)); |
350de78d | 2987 | #endif |
79072805 LW |
2988 | } |
2989 | ||
2990 | OP * | |
864dbfa3 | 2991 | Perl_newPVOP(pTHX_ I32 type, I32 flags, char *pv) |
79072805 | 2992 | { |
27da23d5 | 2993 | dVAR; |
79072805 | 2994 | PVOP *pvop; |
b7dc083c | 2995 | NewOp(1101, pvop, 1, PVOP); |
eb160463 | 2996 | pvop->op_type = (OPCODE)type; |
22c35a8c | 2997 | pvop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2998 | pvop->op_pv = pv; |
2999 | pvop->op_next = (OP*)pvop; | |
eb160463 | 3000 | pvop->op_flags = (U8)flags; |
22c35a8c | 3001 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 3002 | scalar((OP*)pvop); |
22c35a8c | 3003 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 3004 | pvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 3005 | return CHECKOP(type, pvop); |
79072805 LW |
3006 | } |
3007 | ||
79072805 | 3008 | void |
864dbfa3 | 3009 | Perl_package(pTHX_ OP *o) |
79072805 | 3010 | { |
6867be6d | 3011 | const char *name; |
de11ba31 | 3012 | STRLEN len; |
79072805 | 3013 | |
3280af22 NIS |
3014 | save_hptr(&PL_curstash); |
3015 | save_item(PL_curstname); | |
de11ba31 | 3016 | |
5c144d81 | 3017 | name = SvPV_const(cSVOPo->op_sv, len); |
de11ba31 AMS |
3018 | PL_curstash = gv_stashpvn(name, len, TRUE); |
3019 | sv_setpvn(PL_curstname, name, len); | |
3020 | op_free(o); | |
3021 | ||
7ad382f4 | 3022 | PL_hints |= HINT_BLOCK_SCOPE; |
3280af22 NIS |
3023 | PL_copline = NOLINE; |
3024 | PL_expect = XSTATE; | |
79072805 LW |
3025 | } |
3026 | ||
85e6fe83 | 3027 | void |
88d95a4d | 3028 | Perl_utilize(pTHX_ int aver, I32 floor, OP *version, OP *idop, OP *arg) |
85e6fe83 | 3029 | { |
a0d0e21e | 3030 | OP *pack; |
a0d0e21e | 3031 | OP *imop; |
b1cb66bf | 3032 | OP *veop; |
85e6fe83 | 3033 | |
88d95a4d | 3034 | if (idop->op_type != OP_CONST) |
cea2e8a9 | 3035 | Perl_croak(aTHX_ "Module name must be constant"); |
85e6fe83 | 3036 | |
b1cb66bf | 3037 | veop = Nullop; |
3038 | ||
aec46f14 | 3039 | if (version) { |
551405c4 | 3040 | SV * const vesv = ((SVOP*)version)->op_sv; |
b1cb66bf | 3041 | |
aec46f14 | 3042 | if (!arg && !SvNIOKp(vesv)) { |
b1cb66bf | 3043 | arg = version; |
3044 | } | |
3045 | else { | |
3046 | OP *pack; | |
0f79a09d | 3047 | SV *meth; |
b1cb66bf | 3048 | |
44dcb63b | 3049 | if (version->op_type != OP_CONST || !SvNIOKp(vesv)) |
cea2e8a9 | 3050 | Perl_croak(aTHX_ "Version number must be constant number"); |
b1cb66bf | 3051 | |
88d95a4d JH |
3052 | /* Make copy of idop so we don't free it twice */ |
3053 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)idop)->op_sv)); | |
b1cb66bf | 3054 | |
3055 | /* Fake up a method call to VERSION */ | |
427d62a4 | 3056 | meth = newSVpvn_share("VERSION", 7, 0); |
b1cb66bf | 3057 | veop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, |
3058 | append_elem(OP_LIST, | |
0f79a09d GS |
3059 | prepend_elem(OP_LIST, pack, list(version)), |
3060 | newSVOP(OP_METHOD_NAMED, 0, meth))); | |
b1cb66bf | 3061 | } |
3062 | } | |
aeea060c | 3063 | |
a0d0e21e | 3064 | /* Fake up an import/unimport */ |
4633a7c4 LW |
3065 | if (arg && arg->op_type == OP_STUB) |
3066 | imop = arg; /* no import on explicit () */ | |
88d95a4d | 3067 | else if (SvNIOKp(((SVOP*)idop)->op_sv)) { |
b1cb66bf | 3068 | imop = Nullop; /* use 5.0; */ |
468aa647 RGS |
3069 | if (!aver) |
3070 | idop->op_private |= OPpCONST_NOVER; | |
b1cb66bf | 3071 | } |
4633a7c4 | 3072 | else { |
0f79a09d GS |
3073 | SV *meth; |
3074 | ||
88d95a4d JH |
3075 | /* Make copy of idop so we don't free it twice */ |
3076 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)idop)->op_sv)); | |
0f79a09d GS |
3077 | |
3078 | /* Fake up a method call to import/unimport */ | |
427d62a4 NC |
3079 | meth = aver |
3080 | ? newSVpvn_share("import",6, 0) : newSVpvn_share("unimport", 8, 0); | |
4633a7c4 | 3081 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, |
0f79a09d GS |
3082 | append_elem(OP_LIST, |
3083 | prepend_elem(OP_LIST, pack, list(arg)), | |
3084 | newSVOP(OP_METHOD_NAMED, 0, meth))); | |
4633a7c4 LW |
3085 | } |
3086 | ||
a0d0e21e | 3087 | /* Fake up the BEGIN {}, which does its thing immediately. */ |
09bef843 | 3088 | newATTRSUB(floor, |
427d62a4 | 3089 | newSVOP(OP_CONST, 0, newSVpvn_share("BEGIN", 5, 0)), |
4633a7c4 | 3090 | Nullop, |
09bef843 | 3091 | Nullop, |
a0d0e21e | 3092 | append_elem(OP_LINESEQ, |
b1cb66bf | 3093 | append_elem(OP_LINESEQ, |
88d95a4d | 3094 | newSTATEOP(0, Nullch, newUNOP(OP_REQUIRE, 0, idop)), |
b1cb66bf | 3095 | newSTATEOP(0, Nullch, veop)), |
a0d0e21e | 3096 | newSTATEOP(0, Nullch, imop) )); |
85e6fe83 | 3097 | |
70f5e4ed JH |
3098 | /* The "did you use incorrect case?" warning used to be here. |
3099 | * The problem is that on case-insensitive filesystems one | |
3100 | * might get false positives for "use" (and "require"): | |
3101 | * "use Strict" or "require CARP" will work. This causes | |
3102 | * portability problems for the script: in case-strict | |
3103 | * filesystems the script will stop working. | |
3104 | * | |
3105 | * The "incorrect case" warning checked whether "use Foo" | |
3106 | * imported "Foo" to your namespace, but that is wrong, too: | |
3107 | * there is no requirement nor promise in the language that | |
3108 | * a Foo.pm should or would contain anything in package "Foo". | |
3109 | * | |
3110 | * There is very little Configure-wise that can be done, either: | |
3111 | * the case-sensitivity of the build filesystem of Perl does not | |
3112 | * help in guessing the case-sensitivity of the runtime environment. | |
3113 | */ | |
18fc9488 | 3114 | |
c305c6a0 | 3115 | PL_hints |= HINT_BLOCK_SCOPE; |
3280af22 NIS |
3116 | PL_copline = NOLINE; |
3117 | PL_expect = XSTATE; | |
8ec8fbef | 3118 | PL_cop_seqmax++; /* Purely for B::*'s benefit */ |
85e6fe83 LW |
3119 | } |
3120 | ||
7d3fb230 | 3121 | /* |
ccfc67b7 JH |
3122 | =head1 Embedding Functions |
3123 | ||
7d3fb230 BS |
3124 | =for apidoc load_module |
3125 | ||
3126 | Loads the module whose name is pointed to by the string part of name. | |
3127 | Note that the actual module name, not its filename, should be given. | |
3128 | Eg, "Foo::Bar" instead of "Foo/Bar.pm". flags can be any of | |
3129 | PERL_LOADMOD_DENY, PERL_LOADMOD_NOIMPORT, or PERL_LOADMOD_IMPORT_OPS | |
3130 | (or 0 for no flags). ver, if specified, provides version semantics | |
3131 | similar to C<use Foo::Bar VERSION>. The optional trailing SV* | |
3132 | arguments can be used to specify arguments to the module's import() | |
3133 | method, similar to C<use Foo::Bar VERSION LIST>. | |
3134 | ||
3135 | =cut */ | |
3136 | ||
e4783991 GS |
3137 | void |
3138 | Perl_load_module(pTHX_ U32 flags, SV *name, SV *ver, ...) | |
3139 | { | |
3140 | va_list args; | |
3141 | va_start(args, ver); | |
3142 | vload_module(flags, name, ver, &args); | |
3143 | va_end(args); | |
3144 | } | |
3145 | ||
3146 | #ifdef PERL_IMPLICIT_CONTEXT | |
3147 | void | |
3148 | Perl_load_module_nocontext(U32 flags, SV *name, SV *ver, ...) | |
3149 | { | |
3150 | dTHX; | |
3151 | va_list args; | |
3152 | va_start(args, ver); | |
3153 | vload_module(flags, name, ver, &args); | |
3154 | va_end(args); | |
3155 | } | |
3156 | #endif | |
3157 | ||
3158 | void | |
3159 | Perl_vload_module(pTHX_ U32 flags, SV *name, SV *ver, va_list *args) | |
3160 | { | |
551405c4 | 3161 | OP *veop, *imop; |
e4783991 | 3162 | |
551405c4 | 3163 | OP * const modname = newSVOP(OP_CONST, 0, name); |
e4783991 GS |
3164 | modname->op_private |= OPpCONST_BARE; |
3165 | if (ver) { | |
3166 | veop = newSVOP(OP_CONST, 0, ver); | |
3167 | } | |
3168 | else | |
3169 | veop = Nullop; | |
3170 | if (flags & PERL_LOADMOD_NOIMPORT) { | |
3171 | imop = sawparens(newNULLLIST()); | |
3172 | } | |
3173 | else if (flags & PERL_LOADMOD_IMPORT_OPS) { | |
3174 | imop = va_arg(*args, OP*); | |
3175 | } | |
3176 | else { | |
3177 | SV *sv; | |
3178 | imop = Nullop; | |
3179 | sv = va_arg(*args, SV*); | |
3180 | while (sv) { | |
3181 | imop = append_elem(OP_LIST, imop, newSVOP(OP_CONST, 0, sv)); | |
3182 | sv = va_arg(*args, SV*); | |
3183 | } | |
3184 | } | |
81885997 | 3185 | { |
6867be6d AL |
3186 | const line_t ocopline = PL_copline; |
3187 | COP * const ocurcop = PL_curcop; | |
3188 | const int oexpect = PL_expect; | |
81885997 GS |
3189 | |
3190 | utilize(!(flags & PERL_LOADMOD_DENY), start_subparse(FALSE, 0), | |
3191 | veop, modname, imop); | |
3192 | PL_expect = oexpect; | |
3193 | PL_copline = ocopline; | |
834a3ffa | 3194 | PL_curcop = ocurcop; |
81885997 | 3195 | } |
e4783991 GS |
3196 | } |
3197 | ||
79072805 | 3198 | OP * |
850e8516 | 3199 | Perl_dofile(pTHX_ OP *term, I32 force_builtin) |
78ca652e GS |
3200 | { |
3201 | OP *doop; | |
850e8516 | 3202 | GV *gv = Nullgv; |
78ca652e | 3203 | |
850e8516 RGS |
3204 | if (!force_builtin) { |
3205 | gv = gv_fetchpv("do", FALSE, SVt_PVCV); | |
3206 | if (!(gv && GvCVu(gv) && GvIMPORTED_CV(gv))) { | |
551405c4 AL |
3207 | GV * const * const gvp = (GV**)hv_fetch(PL_globalstash, "do", 2, FALSE); |
3208 | gv = gvp ? *gvp : Nullgv; | |
850e8516 RGS |
3209 | } |
3210 | } | |
78ca652e | 3211 | |
b9f751c0 | 3212 | if (gv && GvCVu(gv) && GvIMPORTED_CV(gv)) { |
78ca652e GS |
3213 | doop = ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, |
3214 | append_elem(OP_LIST, term, | |
3215 | scalar(newUNOP(OP_RV2CV, 0, | |
3216 | newGVOP(OP_GV, 0, | |
3217 | gv)))))); | |
3218 | } | |
3219 | else { | |
3220 | doop = newUNOP(OP_DOFILE, 0, scalar(term)); | |
3221 | } | |
3222 | return doop; | |
3223 | } | |
3224 | ||
3225 | OP * | |
864dbfa3 | 3226 | Perl_newSLICEOP(pTHX_ I32 flags, OP *subscript, OP *listval) |
79072805 LW |
3227 | { |
3228 | return newBINOP(OP_LSLICE, flags, | |
8990e307 LW |
3229 | list(force_list(subscript)), |
3230 | list(force_list(listval)) ); | |
79072805 LW |
3231 | } |
3232 | ||
76e3520e | 3233 | STATIC I32 |
504618e9 | 3234 | S_is_list_assignment(pTHX_ register const OP *o) |
79072805 | 3235 | { |
11343788 | 3236 | if (!o) |
79072805 LW |
3237 | return TRUE; |
3238 | ||
11343788 MB |
3239 | if (o->op_type == OP_NULL && o->op_flags & OPf_KIDS) |
3240 | o = cUNOPo->op_first; | |
79072805 | 3241 | |
11343788 | 3242 | if (o->op_type == OP_COND_EXPR) { |
504618e9 AL |
3243 | const I32 t = is_list_assignment(cLOGOPo->op_first->op_sibling); |
3244 | const I32 f = is_list_assignment(cLOGOPo->op_first->op_sibling->op_sibling); | |
79072805 LW |
3245 | |
3246 | if (t && f) | |
3247 | return TRUE; | |
3248 | if (t || f) | |
3249 | yyerror("Assignment to both a list and a scalar"); | |
3250 | return FALSE; | |
3251 | } | |
3252 | ||
95f0a2f1 SB |
3253 | if (o->op_type == OP_LIST && |
3254 | (o->op_flags & OPf_WANT) == OPf_WANT_SCALAR && | |
3255 | o->op_private & OPpLVAL_INTRO) | |
3256 | return FALSE; | |
3257 | ||
11343788 MB |
3258 | if (o->op_type == OP_LIST || o->op_flags & OPf_PARENS || |
3259 | o->op_type == OP_RV2AV || o->op_type == OP_RV2HV || | |
3260 | o->op_type == OP_ASLICE || o->op_type == OP_HSLICE) | |
79072805 LW |
3261 | return TRUE; |
3262 | ||
11343788 | 3263 | if (o->op_type == OP_PADAV || o->op_type == OP_PADHV) |
93a17b20 LW |
3264 | return TRUE; |
3265 | ||
11343788 | 3266 | if (o->op_type == OP_RV2SV) |
79072805 LW |
3267 | return FALSE; |
3268 | ||
3269 | return FALSE; | |
3270 | } | |
3271 | ||
3272 | OP * | |
864dbfa3 | 3273 | Perl_newASSIGNOP(pTHX_ I32 flags, OP *left, I32 optype, OP *right) |
79072805 | 3274 | { |
11343788 | 3275 | OP *o; |
79072805 | 3276 | |
a0d0e21e | 3277 | if (optype) { |
c963b151 | 3278 | if (optype == OP_ANDASSIGN || optype == OP_ORASSIGN || optype == OP_DORASSIGN) { |
a0d0e21e LW |
3279 | return newLOGOP(optype, 0, |
3280 | mod(scalar(left), optype), | |
3281 | newUNOP(OP_SASSIGN, 0, scalar(right))); | |
3282 | } | |
3283 | else { | |
3284 | return newBINOP(optype, OPf_STACKED, | |
3285 | mod(scalar(left), optype), scalar(right)); | |
3286 | } | |
3287 | } | |
3288 | ||
504618e9 | 3289 | if (is_list_assignment(left)) { |
10c8fecd GS |
3290 | OP *curop; |
3291 | ||
3280af22 | 3292 | PL_modcount = 0; |
dbfe47cf RD |
3293 | /* Grandfathering $[ assignment here. Bletch.*/ |
3294 | /* Only simple assignments like C<< ($[) = 1 >> are allowed */ | |
3295 | PL_eval_start = (left->op_type == OP_CONST) ? right : 0; | |
463ee0b2 | 3296 | left = mod(left, OP_AASSIGN); |
3280af22 NIS |
3297 | if (PL_eval_start) |
3298 | PL_eval_start = 0; | |
dbfe47cf RD |
3299 | else if (left->op_type == OP_CONST) { |
3300 | /* Result of assignment is always 1 (or we'd be dead already) */ | |
3301 | return newSVOP(OP_CONST, 0, newSViv(1)); | |
a0d0e21e | 3302 | } |
b9d46b39 RGS |
3303 | /* optimise C<my @x = ()> to C<my @x>, and likewise for hashes */ |
3304 | if ((left->op_type == OP_PADAV || left->op_type == OP_PADHV) | |
3305 | && right->op_type == OP_STUB | |
3306 | && (left->op_private & OPpLVAL_INTRO)) | |
3307 | { | |
3308 | op_free(right); | |
9ff53bc9 | 3309 | left->op_flags &= ~(OPf_REF|OPf_SPECIAL); |
b9d46b39 RGS |
3310 | return left; |
3311 | } | |
10c8fecd GS |
3312 | curop = list(force_list(left)); |
3313 | o = newBINOP(OP_AASSIGN, flags, list(force_list(right)), curop); | |
eb160463 | 3314 | o->op_private = (U8)(0 | (flags >> 8)); |
dd2155a4 DM |
3315 | |
3316 | /* PL_generation sorcery: | |
3317 | * an assignment like ($a,$b) = ($c,$d) is easier than | |
3318 | * ($a,$b) = ($c,$a), since there is no need for temporary vars. | |
3319 | * To detect whether there are common vars, the global var | |
3320 | * PL_generation is incremented for each assign op we compile. | |
3321 | * Then, while compiling the assign op, we run through all the | |
3322 | * variables on both sides of the assignment, setting a spare slot | |
3323 | * in each of them to PL_generation. If any of them already have | |
3324 | * that value, we know we've got commonality. We could use a | |
3325 | * single bit marker, but then we'd have to make 2 passes, first | |
3326 | * to clear the flag, then to test and set it. To find somewhere | |
3327 | * to store these values, evil chicanery is done with SvCUR(). | |
3328 | */ | |
3329 | ||
a0d0e21e | 3330 | if (!(left->op_private & OPpLVAL_INTRO)) { |
11343788 | 3331 | OP *lastop = o; |
3280af22 | 3332 | PL_generation++; |
11343788 | 3333 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
22c35a8c | 3334 | if (PL_opargs[curop->op_type] & OA_DANGEROUS) { |
79072805 | 3335 | if (curop->op_type == OP_GV) { |
638eceb6 | 3336 | GV *gv = cGVOPx_gv(curop); |
eb160463 | 3337 | if (gv == PL_defgv || (int)SvCUR(gv) == PL_generation) |
79072805 | 3338 | break; |
b162af07 | 3339 | SvCUR_set(gv, PL_generation); |
79072805 | 3340 | } |
748a9306 LW |
3341 | else if (curop->op_type == OP_PADSV || |
3342 | curop->op_type == OP_PADAV || | |
3343 | curop->op_type == OP_PADHV || | |
dd2155a4 DM |
3344 | curop->op_type == OP_PADANY) |
3345 | { | |
3346 | if (PAD_COMPNAME_GEN(curop->op_targ) | |
92251a1e | 3347 | == (STRLEN)PL_generation) |
748a9306 | 3348 | break; |
b162af07 | 3349 | PAD_COMPNAME_GEN_set(curop->op_targ, PL_generation); |
dd2155a4 | 3350 | |
748a9306 | 3351 | } |
79072805 LW |
3352 | else if (curop->op_type == OP_RV2CV) |
3353 | break; | |
3354 | else if (curop->op_type == OP_RV2SV || | |
3355 | curop->op_type == OP_RV2AV || | |
3356 | curop->op_type == OP_RV2HV || | |
3357 | curop->op_type == OP_RV2GV) { | |
3358 | if (lastop->op_type != OP_GV) /* funny deref? */ | |
3359 | break; | |
3360 | } | |
1167e5da SM |
3361 | else if (curop->op_type == OP_PUSHRE) { |
3362 | if (((PMOP*)curop)->op_pmreplroot) { | |
b3f5893f | 3363 | #ifdef USE_ITHREADS |
dd2155a4 DM |
3364 | GV *gv = (GV*)PAD_SVl(INT2PTR(PADOFFSET, |
3365 | ((PMOP*)curop)->op_pmreplroot)); | |
b3f5893f | 3366 | #else |
1167e5da | 3367 | GV *gv = (GV*)((PMOP*)curop)->op_pmreplroot; |
b3f5893f | 3368 | #endif |
eb160463 | 3369 | if (gv == PL_defgv || (int)SvCUR(gv) == PL_generation) |
1167e5da | 3370 | break; |
b162af07 | 3371 | SvCUR_set(gv, PL_generation); |
b2ffa427 | 3372 | } |
1167e5da | 3373 | } |
79072805 LW |
3374 | else |
3375 | break; | |
3376 | } | |
3377 | lastop = curop; | |
3378 | } | |
11343788 | 3379 | if (curop != o) |
10c8fecd | 3380 | o->op_private |= OPpASSIGN_COMMON; |
79072805 | 3381 | } |
c07a80fd | 3382 | if (right && right->op_type == OP_SPLIT) { |
3383 | OP* tmpop; | |
3384 | if ((tmpop = ((LISTOP*)right)->op_first) && | |
3385 | tmpop->op_type == OP_PUSHRE) | |
3386 | { | |
551405c4 | 3387 | PMOP * const pm = (PMOP*)tmpop; |
c07a80fd | 3388 | if (left->op_type == OP_RV2AV && |
3389 | !(left->op_private & OPpLVAL_INTRO) && | |
11343788 | 3390 | !(o->op_private & OPpASSIGN_COMMON) ) |
c07a80fd | 3391 | { |
3392 | tmpop = ((UNOP*)left)->op_first; | |
3393 | if (tmpop->op_type == OP_GV && !pm->op_pmreplroot) { | |
971a9dd3 | 3394 | #ifdef USE_ITHREADS |
ba89bb6e | 3395 | pm->op_pmreplroot = INT2PTR(OP*, cPADOPx(tmpop)->op_padix); |
971a9dd3 GS |
3396 | cPADOPx(tmpop)->op_padix = 0; /* steal it */ |
3397 | #else | |
3398 | pm->op_pmreplroot = (OP*)cSVOPx(tmpop)->op_sv; | |
3399 | cSVOPx(tmpop)->op_sv = Nullsv; /* steal it */ | |
3400 | #endif | |
c07a80fd | 3401 | pm->op_pmflags |= PMf_ONCE; |
11343788 | 3402 | tmpop = cUNOPo->op_first; /* to list (nulled) */ |
c07a80fd | 3403 | tmpop = ((UNOP*)tmpop)->op_first; /* to pushmark */ |
3404 | tmpop->op_sibling = Nullop; /* don't free split */ | |
3405 | right->op_next = tmpop->op_next; /* fix starting loc */ | |
11343788 | 3406 | op_free(o); /* blow off assign */ |
54310121 | 3407 | right->op_flags &= ~OPf_WANT; |
a5f75d66 | 3408 | /* "I don't know and I don't care." */ |
c07a80fd | 3409 | return right; |
3410 | } | |
3411 | } | |
3412 | else { | |
e6438c1a | 3413 | if (PL_modcount < RETURN_UNLIMITED_NUMBER && |
c07a80fd | 3414 | ((LISTOP*)right)->op_last->op_type == OP_CONST) |
3415 | { | |
3416 | SV *sv = ((SVOP*)((LISTOP*)right)->op_last)->op_sv; | |
3417 | if (SvIVX(sv) == 0) | |
3280af22 | 3418 | sv_setiv(sv, PL_modcount+1); |
c07a80fd | 3419 | } |
3420 | } | |
3421 | } | |
3422 | } | |
11343788 | 3423 | return o; |
79072805 LW |
3424 | } |
3425 | if (!right) | |
3426 | right = newOP(OP_UNDEF, 0); | |
3427 | if (right->op_type == OP_READLINE) { | |
3428 | right->op_flags |= OPf_STACKED; | |
463ee0b2 | 3429 | return newBINOP(OP_NULL, flags, mod(scalar(left), OP_SASSIGN), scalar(right)); |
79072805 | 3430 | } |
a0d0e21e | 3431 | else { |
3280af22 | 3432 | PL_eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ |
11343788 | 3433 | o = newBINOP(OP_SASSIGN, flags, |
463ee0b2 | 3434 | scalar(right), mod(scalar(left), OP_SASSIGN) ); |
3280af22 NIS |
3435 | if (PL_eval_start) |
3436 | PL_eval_start = 0; | |
748a9306 | 3437 | else { |
dbfe47cf | 3438 | o = newSVOP(OP_CONST, 0, newSViv(PL_compiling.cop_arybase)); |
a0d0e21e LW |
3439 | } |
3440 | } | |
11343788 | 3441 | return o; |
79072805 LW |
3442 | } |
3443 | ||
3444 | OP * | |
864dbfa3 | 3445 | Perl_newSTATEOP(pTHX_ I32 flags, char *label, OP *o) |
79072805 | 3446 | { |
27da23d5 | 3447 | dVAR; |
e1ec3a88 | 3448 | const U32 seq = intro_my(); |
79072805 LW |
3449 | register COP *cop; |
3450 | ||
b7dc083c | 3451 | NewOp(1101, cop, 1, COP); |
57843af0 | 3452 | if (PERLDB_LINE && CopLINE(PL_curcop) && PL_curstash != PL_debstash) { |
8990e307 | 3453 | cop->op_type = OP_DBSTATE; |
22c35a8c | 3454 | cop->op_ppaddr = PL_ppaddr[ OP_DBSTATE ]; |
8990e307 LW |
3455 | } |
3456 | else { | |
3457 | cop->op_type = OP_NEXTSTATE; | |
22c35a8c | 3458 | cop->op_ppaddr = PL_ppaddr[ OP_NEXTSTATE ]; |
8990e307 | 3459 | } |
eb160463 GS |
3460 | cop->op_flags = (U8)flags; |
3461 | cop->op_private = (U8)(PL_hints & HINT_PRIVATE_MASK); | |
ff0cee69 | 3462 | #ifdef NATIVE_HINTS |
3463 | cop->op_private |= NATIVE_HINTS; | |
3464 | #endif | |
e24b16f9 | 3465 | PL_compiling.op_private = cop->op_private; |
79072805 LW |
3466 | cop->op_next = (OP*)cop; |
3467 | ||
463ee0b2 LW |
3468 | if (label) { |
3469 | cop->cop_label = label; | |
3280af22 | 3470 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 3471 | } |
bbce6d69 | 3472 | cop->cop_seq = seq; |
3280af22 | 3473 | cop->cop_arybase = PL_curcop->cop_arybase; |
0453d815 | 3474 | if (specialWARN(PL_curcop->cop_warnings)) |
599cee73 | 3475 | cop->cop_warnings = PL_curcop->cop_warnings ; |
1c846c1f | 3476 | else |
599cee73 | 3477 | cop->cop_warnings = newSVsv(PL_curcop->cop_warnings) ; |
ac27b0f5 NIS |
3478 | if (specialCopIO(PL_curcop->cop_io)) |
3479 | cop->cop_io = PL_curcop->cop_io; | |
3480 | else | |
3481 | cop->cop_io = newSVsv(PL_curcop->cop_io) ; | |
599cee73 | 3482 | |
79072805 | 3483 | |
3280af22 | 3484 | if (PL_copline == NOLINE) |
57843af0 | 3485 | CopLINE_set(cop, CopLINE(PL_curcop)); |
79072805 | 3486 | else { |
57843af0 | 3487 | CopLINE_set(cop, PL_copline); |
3280af22 | 3488 | PL_copline = NOLINE; |
79072805 | 3489 | } |
57843af0 | 3490 | #ifdef USE_ITHREADS |
f4dd75d9 | 3491 | CopFILE_set(cop, CopFILE(PL_curcop)); /* XXX share in a pvtable? */ |
57843af0 | 3492 | #else |
f4dd75d9 | 3493 | CopFILEGV_set(cop, CopFILEGV(PL_curcop)); |
57843af0 | 3494 | #endif |
11faa288 | 3495 | CopSTASH_set(cop, PL_curstash); |
79072805 | 3496 | |
3280af22 | 3497 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
551405c4 | 3498 | SV * const * const svp = av_fetch(CopFILEAV(PL_curcop), (I32)CopLINE(cop), FALSE); |
2d03de9c AL |
3499 | if (svp && *svp != &PL_sv_undef ) { |
3500 | (void)SvIOK_on(*svp); | |
45977657 | 3501 | SvIV_set(*svp, PTR2IV(cop)); |
1eb1540c | 3502 | } |
93a17b20 LW |
3503 | } |
3504 | ||
722969e2 | 3505 | return prepend_elem(OP_LINESEQ, (OP*)cop, o); |
79072805 LW |
3506 | } |
3507 | ||
bbce6d69 | 3508 | |
79072805 | 3509 | OP * |
864dbfa3 | 3510 | Perl_newLOGOP(pTHX_ I32 type, I32 flags, OP *first, OP *other) |
79072805 | 3511 | { |
27da23d5 | 3512 | dVAR; |
883ffac3 CS |
3513 | return new_logop(type, flags, &first, &other); |
3514 | } | |
3515 | ||
3bd495df | 3516 | STATIC OP * |
cea2e8a9 | 3517 | S_new_logop(pTHX_ I32 type, I32 flags, OP** firstp, OP** otherp) |
883ffac3 | 3518 | { |
27da23d5 | 3519 | dVAR; |
79072805 | 3520 | LOGOP *logop; |
11343788 | 3521 | OP *o; |
883ffac3 | 3522 | OP *first = *firstp; |
b22e6366 | 3523 | OP * const other = *otherp; |
79072805 | 3524 | |
a0d0e21e LW |
3525 | if (type == OP_XOR) /* Not short circuit, but here by precedence. */ |
3526 | return newBINOP(type, flags, scalar(first), scalar(other)); | |
3527 | ||
8990e307 | 3528 | scalarboolean(first); |
79072805 LW |
3529 | /* optimize "!a && b" to "a || b", and "!a || b" to "a && b" */ |
3530 | if (first->op_type == OP_NOT && (first->op_flags & OPf_SPECIAL)) { | |
3531 | if (type == OP_AND || type == OP_OR) { | |
3532 | if (type == OP_AND) | |
3533 | type = OP_OR; | |
3534 | else | |
3535 | type = OP_AND; | |
11343788 | 3536 | o = first; |
883ffac3 | 3537 | first = *firstp = cUNOPo->op_first; |
11343788 MB |
3538 | if (o->op_next) |
3539 | first->op_next = o->op_next; | |
3540 | cUNOPo->op_first = Nullop; | |
3541 | op_free(o); | |
79072805 LW |
3542 | } |
3543 | } | |
3544 | if (first->op_type == OP_CONST) { | |
39a440a3 DM |
3545 | if (first->op_private & OPpCONST_STRICT) |
3546 | no_bareword_allowed(first); | |
041457d9 | 3547 | else if ((first->op_private & OPpCONST_BARE) && ckWARN(WARN_BAREWORD)) |
989dfb19 | 3548 | Perl_warner(aTHX_ packWARN(WARN_BAREWORD), "Bareword found in conditional"); |
75cc09e4 MHM |
3549 | if ((type == OP_AND && SvTRUE(((SVOP*)first)->op_sv)) || |
3550 | (type == OP_OR && !SvTRUE(((SVOP*)first)->op_sv)) || | |
3551 | (type == OP_DOR && !SvOK(((SVOP*)first)->op_sv))) { | |
79072805 | 3552 | op_free(first); |
883ffac3 | 3553 | *firstp = Nullop; |
d6fee5c7 DM |
3554 | if (other->op_type == OP_CONST) |
3555 | other->op_private |= OPpCONST_SHORTCIRCUIT; | |
79072805 LW |
3556 | return other; |
3557 | } | |
3558 | else { | |
7921d0f2 | 3559 | /* check for C<my $x if 0>, or C<my($x,$y) if 0> */ |
6867be6d | 3560 | const OP *o2 = other; |
7921d0f2 DM |
3561 | if ( ! (o2->op_type == OP_LIST |
3562 | && (( o2 = cUNOPx(o2)->op_first)) | |
3563 | && o2->op_type == OP_PUSHMARK | |
3564 | && (( o2 = o2->op_sibling)) ) | |
3565 | ) | |
3566 | o2 = other; | |
3567 | if ((o2->op_type == OP_PADSV || o2->op_type == OP_PADAV | |
3568 | || o2->op_type == OP_PADHV) | |
3569 | && o2->op_private & OPpLVAL_INTRO | |
3570 | && ckWARN(WARN_DEPRECATED)) | |
3571 | { | |
3572 | Perl_warner(aTHX_ packWARN(WARN_DEPRECATED), | |
3573 | "Deprecated use of my() in false conditional"); | |
3574 | } | |
3575 | ||
79072805 | 3576 | op_free(other); |
883ffac3 | 3577 | *otherp = Nullop; |
d6fee5c7 DM |
3578 | if (first->op_type == OP_CONST) |
3579 | first->op_private |= OPpCONST_SHORTCIRCUIT; | |
79072805 LW |
3580 | return first; |
3581 | } | |
3582 | } | |
041457d9 DM |
3583 | else if ((first->op_flags & OPf_KIDS) && type != OP_DOR |
3584 | && ckWARN(WARN_MISC)) /* [#24076] Don't warn for <FH> err FOO. */ | |
59e10468 | 3585 | { |
b22e6366 AL |
3586 | const OP * const k1 = ((UNOP*)first)->op_first; |
3587 | const OP * const k2 = k1->op_sibling; | |
a6006777 | 3588 | OPCODE warnop = 0; |
3589 | switch (first->op_type) | |
3590 | { | |
3591 | case OP_NULL: | |
3592 | if (k2 && k2->op_type == OP_READLINE | |
3593 | && (k2->op_flags & OPf_STACKED) | |
1c846c1f | 3594 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
72b16652 | 3595 | { |
a6006777 | 3596 | warnop = k2->op_type; |
72b16652 | 3597 | } |
a6006777 | 3598 | break; |
3599 | ||
3600 | case OP_SASSIGN: | |
68dc0745 | 3601 | if (k1->op_type == OP_READDIR |
3602 | || k1->op_type == OP_GLOB | |
72b16652 | 3603 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) |
68dc0745 | 3604 | || k1->op_type == OP_EACH) |
72b16652 GS |
3605 | { |
3606 | warnop = ((k1->op_type == OP_NULL) | |
eb160463 | 3607 | ? (OPCODE)k1->op_targ : k1->op_type); |
72b16652 | 3608 | } |
a6006777 | 3609 | break; |
3610 | } | |
8ebc5c01 | 3611 | if (warnop) { |
6867be6d | 3612 | const line_t oldline = CopLINE(PL_curcop); |
57843af0 | 3613 | CopLINE_set(PL_curcop, PL_copline); |
9014280d | 3614 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
599cee73 | 3615 | "Value of %s%s can be \"0\"; test with defined()", |
22c35a8c | 3616 | PL_op_desc[warnop], |
68dc0745 | 3617 | ((warnop == OP_READLINE || warnop == OP_GLOB) |
3618 | ? " construct" : "() operator")); | |
57843af0 | 3619 | CopLINE_set(PL_curcop, oldline); |
8ebc5c01 | 3620 | } |
a6006777 | 3621 | } |
79072805 LW |
3622 | |
3623 | if (!other) | |
3624 | return first; | |
3625 | ||
c963b151 | 3626 | if (type == OP_ANDASSIGN || type == OP_ORASSIGN || type == OP_DORASSIGN) |
a0d0e21e LW |
3627 | other->op_private |= OPpASSIGN_BACKWARDS; /* other is an OP_SASSIGN */ |
3628 | ||
b7dc083c | 3629 | NewOp(1101, logop, 1, LOGOP); |
79072805 | 3630 | |
eb160463 | 3631 | logop->op_type = (OPCODE)type; |
22c35a8c | 3632 | logop->op_ppaddr = PL_ppaddr[type]; |
79072805 | 3633 | logop->op_first = first; |
585ec06d | 3634 | logop->op_flags = (U8)(flags | OPf_KIDS); |
79072805 | 3635 | logop->op_other = LINKLIST(other); |
eb160463 | 3636 | logop->op_private = (U8)(1 | (flags >> 8)); |
79072805 LW |
3637 | |
3638 | /* establish postfix order */ | |
3639 | logop->op_next = LINKLIST(first); | |
3640 | first->op_next = (OP*)logop; | |
3641 | first->op_sibling = other; | |
3642 | ||
463d09e6 RGS |
3643 | CHECKOP(type,logop); |
3644 | ||
11343788 MB |
3645 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
3646 | other->op_next = o; | |
79072805 | 3647 | |
11343788 | 3648 | return o; |
79072805 LW |
3649 | } |
3650 | ||
3651 | OP * | |
864dbfa3 | 3652 | Perl_newCONDOP(pTHX_ I32 flags, OP *first, OP *trueop, OP *falseop) |
79072805 | 3653 | { |
27da23d5 | 3654 | dVAR; |
1a67a97c SM |
3655 | LOGOP *logop; |
3656 | OP *start; | |
11343788 | 3657 | OP *o; |
79072805 | 3658 | |
b1cb66bf | 3659 | if (!falseop) |
3660 | return newLOGOP(OP_AND, 0, first, trueop); | |
3661 | if (!trueop) | |
3662 | return newLOGOP(OP_OR, 0, first, falseop); | |
79072805 | 3663 | |
8990e307 | 3664 | scalarboolean(first); |
79072805 | 3665 | if (first->op_type == OP_CONST) { |
2bc6235c | 3666 | if (first->op_private & OPpCONST_BARE && |
b22e6366 AL |
3667 | first->op_private & OPpCONST_STRICT) { |
3668 | no_bareword_allowed(first); | |
3669 | } | |
79072805 LW |
3670 | if (SvTRUE(((SVOP*)first)->op_sv)) { |
3671 | op_free(first); | |
b1cb66bf | 3672 | op_free(falseop); |
3673 | return trueop; | |
79072805 LW |
3674 | } |
3675 | else { | |
3676 | op_free(first); | |
b1cb66bf | 3677 | op_free(trueop); |
3678 | return falseop; | |
79072805 LW |
3679 | } |
3680 | } | |
1a67a97c SM |
3681 | NewOp(1101, logop, 1, LOGOP); |
3682 | logop->op_type = OP_COND_EXPR; | |
3683 | logop->op_ppaddr = PL_ppaddr[OP_COND_EXPR]; | |
3684 | logop->op_first = first; | |
585ec06d | 3685 | logop->op_flags = (U8)(flags | OPf_KIDS); |
eb160463 | 3686 | logop->op_private = (U8)(1 | (flags >> 8)); |
1a67a97c SM |
3687 | logop->op_other = LINKLIST(trueop); |
3688 | logop->op_next = LINKLIST(falseop); | |
79072805 | 3689 | |
463d09e6 RGS |
3690 | CHECKOP(OP_COND_EXPR, /* that's logop->op_type */ |
3691 | logop); | |
79072805 LW |
3692 | |
3693 | /* establish postfix order */ | |
1a67a97c SM |
3694 | start = LINKLIST(first); |
3695 | first->op_next = (OP*)logop; | |
79072805 | 3696 | |
b1cb66bf | 3697 | first->op_sibling = trueop; |
3698 | trueop->op_sibling = falseop; | |
1a67a97c | 3699 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
79072805 | 3700 | |
1a67a97c | 3701 | trueop->op_next = falseop->op_next = o; |
79072805 | 3702 | |
1a67a97c | 3703 | o->op_next = start; |
11343788 | 3704 | return o; |
79072805 LW |
3705 | } |
3706 | ||
3707 | OP * | |
864dbfa3 | 3708 | Perl_newRANGE(pTHX_ I32 flags, OP *left, OP *right) |
79072805 | 3709 | { |
27da23d5 | 3710 | dVAR; |
1a67a97c | 3711 | LOGOP *range; |
79072805 LW |
3712 | OP *flip; |
3713 | OP *flop; | |
1a67a97c | 3714 | OP *leftstart; |
11343788 | 3715 | OP *o; |
79072805 | 3716 | |
1a67a97c | 3717 | NewOp(1101, range, 1, LOGOP); |
79072805 | 3718 | |
1a67a97c SM |
3719 | range->op_type = OP_RANGE; |
3720 | range->op_ppaddr = PL_ppaddr[OP_RANGE]; | |
3721 | range->op_first = left; | |
3722 | range->op_flags = OPf_KIDS; | |
3723 | leftstart = LINKLIST(left); | |
3724 | range->op_other = LINKLIST(right); | |
eb160463 | 3725 | range->op_private = (U8)(1 | (flags >> 8)); |
79072805 LW |
3726 | |
3727 | left->op_sibling = right; | |
3728 | ||
1a67a97c SM |
3729 | range->op_next = (OP*)range; |
3730 | flip = newUNOP(OP_FLIP, flags, (OP*)range); | |
79072805 | 3731 | flop = newUNOP(OP_FLOP, 0, flip); |
11343788 | 3732 | o = newUNOP(OP_NULL, 0, flop); |
79072805 | 3733 | linklist(flop); |
1a67a97c | 3734 | range->op_next = leftstart; |
79072805 LW |
3735 | |
3736 | left->op_next = flip; | |
3737 | right->op_next = flop; | |
3738 | ||
1a67a97c SM |
3739 | range->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
3740 | sv_upgrade(PAD_SV(range->op_targ), SVt_PVNV); | |
ed6116ce | 3741 | flip->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 LW |
3742 | sv_upgrade(PAD_SV(flip->op_targ), SVt_PVNV); |
3743 | ||
3744 | flip->op_private = left->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
3745 | flop->op_private = right->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
3746 | ||
11343788 | 3747 | flip->op_next = o; |
79072805 | 3748 | if (!flip->op_private || !flop->op_private) |
11343788 | 3749 | linklist(o); /* blow off optimizer unless constant */ |
79072805 | 3750 | |
11343788 | 3751 | return o; |
79072805 LW |
3752 | } |
3753 | ||
3754 | OP * | |
864dbfa3 | 3755 | Perl_newLOOPOP(pTHX_ I32 flags, I32 debuggable, OP *expr, OP *block) |
79072805 | 3756 | { |
463ee0b2 | 3757 | OP* listop; |
11343788 | 3758 | OP* o; |
73d840c0 | 3759 | const bool once = block && block->op_flags & OPf_SPECIAL && |
a0d0e21e | 3760 | (block->op_type == OP_ENTERSUB || block->op_type == OP_NULL); |
46c461b5 AL |
3761 | |
3762 | PERL_UNUSED_ARG(debuggable); | |
93a17b20 | 3763 | |
463ee0b2 LW |
3764 | if (expr) { |
3765 | if (once && expr->op_type == OP_CONST && !SvTRUE(((SVOP*)expr)->op_sv)) | |
3766 | return block; /* do {} while 0 does once */ | |
fb73857a | 3767 | if (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB |
3768 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB)) { | |
774d564b | 3769 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 3770 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 | 3771 | } else if (expr->op_flags & OPf_KIDS) { |
46c461b5 AL |
3772 | const OP * const k1 = ((UNOP*)expr)->op_first; |
3773 | const OP * const k2 = k1 ? k1->op_sibling : NULL; | |
55d729e4 | 3774 | switch (expr->op_type) { |
1c846c1f | 3775 | case OP_NULL: |
55d729e4 GS |
3776 | if (k2 && k2->op_type == OP_READLINE |
3777 | && (k2->op_flags & OPf_STACKED) | |
1c846c1f | 3778 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
55d729e4 | 3779 | expr = newUNOP(OP_DEFINED, 0, expr); |
1c846c1f | 3780 | break; |
55d729e4 GS |
3781 | |
3782 | case OP_SASSIGN: | |
3783 | if (k1->op_type == OP_READDIR | |
3784 | || k1->op_type == OP_GLOB | |
6531c3e6 | 3785 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) |
55d729e4 GS |
3786 | || k1->op_type == OP_EACH) |
3787 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3788 | break; | |
3789 | } | |
774d564b | 3790 | } |
463ee0b2 | 3791 | } |
93a17b20 | 3792 | |
e1548254 RGS |
3793 | /* if block is null, the next append_elem() would put UNSTACK, a scalar |
3794 | * op, in listop. This is wrong. [perl #27024] */ | |
3795 | if (!block) | |
3796 | block = newOP(OP_NULL, 0); | |
8990e307 | 3797 | listop = append_elem(OP_LINESEQ, block, newOP(OP_UNSTACK, 0)); |
883ffac3 | 3798 | o = new_logop(OP_AND, 0, &expr, &listop); |
463ee0b2 | 3799 | |
883ffac3 CS |
3800 | if (listop) |
3801 | ((LISTOP*)listop)->op_last->op_next = LINKLIST(o); | |
79072805 | 3802 | |
11343788 MB |
3803 | if (once && o != listop) |
3804 | o->op_next = ((LOGOP*)cUNOPo->op_first)->op_other; | |
79072805 | 3805 | |
11343788 MB |
3806 | if (o == listop) |
3807 | o = newUNOP(OP_NULL, 0, o); /* or do {} while 1 loses outer block */ | |
748a9306 | 3808 | |
11343788 MB |
3809 | o->op_flags |= flags; |
3810 | o = scope(o); | |
3811 | o->op_flags |= OPf_SPECIAL; /* suppress POPBLOCK curpm restoration*/ | |
3812 | return o; | |
79072805 LW |
3813 | } |
3814 | ||
3815 | OP * | |
a034e688 DM |
3816 | Perl_newWHILEOP(pTHX_ I32 flags, I32 debuggable, LOOP *loop, I32 |
3817 | whileline, OP *expr, OP *block, OP *cont, I32 has_my) | |
79072805 | 3818 | { |
27da23d5 | 3819 | dVAR; |
79072805 LW |
3820 | OP *redo; |
3821 | OP *next = 0; | |
3822 | OP *listop; | |
11343788 | 3823 | OP *o; |
1ba6ee2b | 3824 | U8 loopflags = 0; |
46c461b5 AL |
3825 | |
3826 | PERL_UNUSED_ARG(debuggable); | |
79072805 | 3827 | |
2d03de9c AL |
3828 | if (expr) { |
3829 | if (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB | |
3830 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB)) { | |
3831 | expr = newUNOP(OP_DEFINED, 0, | |
3832 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); | |
3833 | } else if (expr->op_flags & OPf_KIDS) { | |
3834 | const OP * const k1 = ((UNOP*)expr)->op_first; | |
3835 | const OP * const k2 = (k1) ? k1->op_sibling : NULL; | |
3836 | switch (expr->op_type) { | |
3837 | case OP_NULL: | |
3838 | if (k2 && k2->op_type == OP_READLINE | |
3839 | && (k2->op_flags & OPf_STACKED) | |
3840 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) | |
3841 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3842 | break; | |
55d729e4 | 3843 | |
2d03de9c AL |
3844 | case OP_SASSIGN: |
3845 | if (k1->op_type == OP_READDIR | |
3846 | || k1->op_type == OP_GLOB | |
3847 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) | |
3848 | || k1->op_type == OP_EACH) | |
3849 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3850 | break; | |
3851 | } | |
55d729e4 | 3852 | } |
748a9306 | 3853 | } |
79072805 LW |
3854 | |
3855 | if (!block) | |
3856 | block = newOP(OP_NULL, 0); | |
a034e688 | 3857 | else if (cont || has_my) { |
87246558 GS |
3858 | block = scope(block); |
3859 | } | |
79072805 | 3860 | |
1ba6ee2b | 3861 | if (cont) { |
79072805 | 3862 | next = LINKLIST(cont); |
1ba6ee2b | 3863 | } |
fb73857a | 3864 | if (expr) { |
551405c4 | 3865 | OP * const unstack = newOP(OP_UNSTACK, 0); |
85538317 GS |
3866 | if (!next) |
3867 | next = unstack; | |
3868 | cont = append_elem(OP_LINESEQ, cont, unstack); | |
fb73857a | 3869 | } |
79072805 | 3870 | |
463ee0b2 | 3871 | listop = append_list(OP_LINESEQ, (LISTOP*)block, (LISTOP*)cont); |
79072805 LW |
3872 | redo = LINKLIST(listop); |
3873 | ||
3874 | if (expr) { | |
eb160463 | 3875 | PL_copline = (line_t)whileline; |
883ffac3 CS |
3876 | scalar(listop); |
3877 | o = new_logop(OP_AND, 0, &expr, &listop); | |
11343788 | 3878 | if (o == expr && o->op_type == OP_CONST && !SvTRUE(cSVOPo->op_sv)) { |
85e6fe83 | 3879 | op_free(expr); /* oops, it's a while (0) */ |
463ee0b2 | 3880 | op_free((OP*)loop); |
883ffac3 | 3881 | return Nullop; /* listop already freed by new_logop */ |
463ee0b2 | 3882 | } |
883ffac3 | 3883 | if (listop) |
497b47a8 | 3884 | ((LISTOP*)listop)->op_last->op_next = |
883ffac3 | 3885 | (o == listop ? redo : LINKLIST(o)); |
79072805 LW |
3886 | } |
3887 | else | |
11343788 | 3888 | o = listop; |
79072805 LW |
3889 | |
3890 | if (!loop) { | |
b7dc083c | 3891 | NewOp(1101,loop,1,LOOP); |
79072805 | 3892 | loop->op_type = OP_ENTERLOOP; |
22c35a8c | 3893 | loop->op_ppaddr = PL_ppaddr[OP_ENTERLOOP]; |
79072805 LW |
3894 | loop->op_private = 0; |
3895 | loop->op_next = (OP*)loop; | |
3896 | } | |
3897 | ||
11343788 | 3898 | o = newBINOP(OP_LEAVELOOP, 0, (OP*)loop, o); |
79072805 LW |
3899 | |
3900 | loop->op_redoop = redo; | |
11343788 | 3901 | loop->op_lastop = o; |
1ba6ee2b | 3902 | o->op_private |= loopflags; |
79072805 LW |
3903 | |
3904 | if (next) | |
3905 | loop->op_nextop = next; | |
3906 | else | |
11343788 | 3907 | loop->op_nextop = o; |
79072805 | 3908 | |
11343788 MB |
3909 | o->op_flags |= flags; |
3910 | o->op_private |= (flags >> 8); | |
3911 | return o; | |
79072805 LW |
3912 | } |
3913 | ||
3914 | OP * | |
66a1b24b | 3915 | Perl_newFOROP(pTHX_ I32 flags, char *label, line_t forline, OP *sv, OP *expr, OP *block, OP *cont) |
79072805 | 3916 | { |
27da23d5 | 3917 | dVAR; |
79072805 | 3918 | LOOP *loop; |
fb73857a | 3919 | OP *wop; |
4bbc6d12 | 3920 | PADOFFSET padoff = 0; |
4633a7c4 | 3921 | I32 iterflags = 0; |
241416b8 | 3922 | I32 iterpflags = 0; |
79072805 | 3923 | |
79072805 | 3924 | if (sv) { |
85e6fe83 | 3925 | if (sv->op_type == OP_RV2SV) { /* symbol table variable */ |
241416b8 | 3926 | iterpflags = sv->op_private & OPpOUR_INTRO; /* for our $x () */ |
748a9306 | 3927 | sv->op_type = OP_RV2GV; |
22c35a8c | 3928 | sv->op_ppaddr = PL_ppaddr[OP_RV2GV]; |
79072805 | 3929 | } |
85e6fe83 | 3930 | else if (sv->op_type == OP_PADSV) { /* private variable */ |
241416b8 | 3931 | iterpflags = sv->op_private & OPpLVAL_INTRO; /* for my $x () */ |
85e6fe83 | 3932 | padoff = sv->op_targ; |
743e66e6 | 3933 | sv->op_targ = 0; |
85e6fe83 LW |
3934 | op_free(sv); |
3935 | sv = Nullop; | |
3936 | } | |
54b9620d MB |
3937 | else if (sv->op_type == OP_THREADSV) { /* per-thread variable */ |
3938 | padoff = sv->op_targ; | |
743e66e6 | 3939 | sv->op_targ = 0; |
54b9620d MB |
3940 | iterflags |= OPf_SPECIAL; |
3941 | op_free(sv); | |
3942 | sv = Nullop; | |
3943 | } | |
79072805 | 3944 | else |
cea2e8a9 | 3945 | Perl_croak(aTHX_ "Can't use %s for loop variable", PL_op_desc[sv->op_type]); |
79072805 LW |
3946 | } |
3947 | else { | |
73d840c0 | 3948 | const I32 offset = pad_findmy("$_"); |
aabe9514 RGS |
3949 | if (offset == NOT_IN_PAD || PAD_COMPNAME_FLAGS(offset) & SVpad_OUR) { |
3950 | sv = newGVOP(OP_GV, 0, PL_defgv); | |
3951 | } | |
3952 | else { | |
3953 | padoff = offset; | |
aabe9514 | 3954 | } |
79072805 | 3955 | } |
5f05dabc | 3956 | if (expr->op_type == OP_RV2AV || expr->op_type == OP_PADAV) { |
89ea2908 | 3957 | expr = mod(force_list(scalar(ref(expr, OP_ITER))), OP_GREPSTART); |
4633a7c4 LW |
3958 | iterflags |= OPf_STACKED; |
3959 | } | |
89ea2908 GA |
3960 | else if (expr->op_type == OP_NULL && |
3961 | (expr->op_flags & OPf_KIDS) && | |
3962 | ((BINOP*)expr)->op_first->op_type == OP_FLOP) | |
3963 | { | |
3964 | /* Basically turn for($x..$y) into the same as for($x,$y), but we | |
3965 | * set the STACKED flag to indicate that these values are to be | |
3966 | * treated as min/max values by 'pp_iterinit'. | |
3967 | */ | |
551405c4 AL |
3968 | UNOP* const flip = (UNOP*)((UNOP*)((BINOP*)expr)->op_first)->op_first; |
3969 | LOGOP* const range = (LOGOP*) flip->op_first; | |
66a1b24b AL |
3970 | OP* const left = range->op_first; |
3971 | OP* const right = left->op_sibling; | |
5152d7c7 | 3972 | LISTOP* listop; |
89ea2908 GA |
3973 | |
3974 | range->op_flags &= ~OPf_KIDS; | |
3975 | range->op_first = Nullop; | |
3976 | ||
5152d7c7 | 3977 | listop = (LISTOP*)newLISTOP(OP_LIST, 0, left, right); |
1a67a97c SM |
3978 | listop->op_first->op_next = range->op_next; |
3979 | left->op_next = range->op_other; | |
5152d7c7 GS |
3980 | right->op_next = (OP*)listop; |
3981 | listop->op_next = listop->op_first; | |
89ea2908 GA |
3982 | |
3983 | op_free(expr); | |
5152d7c7 | 3984 | expr = (OP*)(listop); |
93c66552 | 3985 | op_null(expr); |
89ea2908 GA |
3986 | iterflags |= OPf_STACKED; |
3987 | } | |
3988 | else { | |
3989 | expr = mod(force_list(expr), OP_GREPSTART); | |
3990 | } | |
3991 | ||
4633a7c4 | 3992 | loop = (LOOP*)list(convert(OP_ENTERITER, iterflags, |
89ea2908 | 3993 | append_elem(OP_LIST, expr, scalar(sv)))); |
85e6fe83 | 3994 | assert(!loop->op_next); |
241416b8 | 3995 | /* for my $x () sets OPpLVAL_INTRO; |
14f338dc | 3996 | * for our $x () sets OPpOUR_INTRO */ |
c5661c80 | 3997 | loop->op_private = (U8)iterpflags; |
b7dc083c | 3998 | #ifdef PL_OP_SLAB_ALLOC |
155aba94 GS |
3999 | { |
4000 | LOOP *tmp; | |
4001 | NewOp(1234,tmp,1,LOOP); | |
bd5f3bc4 | 4002 | Copy(loop,tmp,1,LISTOP); |
238a4c30 | 4003 | FreeOp(loop); |
155aba94 GS |
4004 | loop = tmp; |
4005 | } | |
b7dc083c | 4006 | #else |
85e6fe83 | 4007 | Renew(loop, 1, LOOP); |
1c846c1f | 4008 | #endif |
85e6fe83 | 4009 | loop->op_targ = padoff; |
a034e688 | 4010 | wop = newWHILEOP(flags, 1, loop, forline, newOP(OP_ITER, 0), block, cont, 0); |
3280af22 | 4011 | PL_copline = forline; |
fb73857a | 4012 | return newSTATEOP(0, label, wop); |
79072805 LW |
4013 | } |
4014 | ||
8990e307 | 4015 | OP* |
864dbfa3 | 4016 | Perl_newLOOPEX(pTHX_ I32 type, OP *label) |
8990e307 | 4017 | { |
11343788 | 4018 | OP *o; |
2d8e6c8d | 4019 | |
8990e307 | 4020 | if (type != OP_GOTO || label->op_type == OP_CONST) { |
cdaebead MB |
4021 | /* "last()" means "last" */ |
4022 | if (label->op_type == OP_STUB && (label->op_flags & OPf_PARENS)) | |
4023 | o = newOP(type, OPf_SPECIAL); | |
4024 | else { | |
4025 | o = newPVOP(type, 0, savepv(label->op_type == OP_CONST | |
8b6b16e7 | 4026 | ? SvPVx_nolen_const(((SVOP*)label)->op_sv) |
cdaebead MB |
4027 | : "")); |
4028 | } | |
8990e307 LW |
4029 | op_free(label); |
4030 | } | |
4031 | else { | |
e3aba57a RGS |
4032 | /* Check whether it's going to be a goto &function */ |
4033 | if (label->op_type == OP_ENTERSUB | |
4034 | && !(label->op_flags & OPf_STACKED)) | |
a0d0e21e | 4035 | label = newUNOP(OP_REFGEN, 0, mod(label, OP_REFGEN)); |
11343788 | 4036 | o = newUNOP(type, OPf_STACKED, label); |
8990e307 | 4037 | } |
3280af22 | 4038 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 4039 | return o; |
8990e307 LW |
4040 | } |
4041 | ||
7dafbf52 DM |
4042 | /* |
4043 | =for apidoc cv_undef | |
4044 | ||
4045 | Clear out all the active components of a CV. This can happen either | |
4046 | by an explicit C<undef &foo>, or by the reference count going to zero. | |
4047 | In the former case, we keep the CvOUTSIDE pointer, so that any anonymous | |
4048 | children can still follow the full lexical scope chain. | |
4049 | ||
4050 | =cut | |
4051 | */ | |
4052 | ||
79072805 | 4053 | void |
864dbfa3 | 4054 | Perl_cv_undef(pTHX_ CV *cv) |
79072805 | 4055 | { |
27da23d5 | 4056 | dVAR; |
a636914a | 4057 | #ifdef USE_ITHREADS |
35f1c1c7 SB |
4058 | if (CvFILE(cv) && !CvXSUB(cv)) { |
4059 | /* for XSUBs CvFILE point directly to static memory; __FILE__ */ | |
a636914a | 4060 | Safefree(CvFILE(cv)); |
a636914a | 4061 | } |
f3e31eb5 | 4062 | CvFILE(cv) = 0; |
a636914a RH |
4063 | #endif |
4064 | ||
a0d0e21e LW |
4065 | if (!CvXSUB(cv) && CvROOT(cv)) { |
4066 | if (CvDEPTH(cv)) | |
cea2e8a9 | 4067 | Perl_croak(aTHX_ "Can't undef active subroutine"); |
8990e307 | 4068 | ENTER; |
a0d0e21e | 4069 | |
f3548bdc | 4070 | PAD_SAVE_SETNULLPAD(); |
a0d0e21e | 4071 | |
282f25c9 | 4072 | op_free(CvROOT(cv)); |
79072805 | 4073 | CvROOT(cv) = Nullop; |
8f476eee | 4074 | CvSTART(cv) = Nullop; |
8990e307 | 4075 | LEAVE; |
79072805 | 4076 | } |
1d5db326 | 4077 | SvPOK_off((SV*)cv); /* forget prototype */ |
8e07c86e | 4078 | CvGV(cv) = Nullgv; |
a3985cdc DM |
4079 | |
4080 | pad_undef(cv); | |
4081 | ||
7dafbf52 DM |
4082 | /* remove CvOUTSIDE unless this is an undef rather than a free */ |
4083 | if (!SvREFCNT(cv) && CvOUTSIDE(cv)) { | |
4084 | if (!CvWEAKOUTSIDE(cv)) | |
4085 | SvREFCNT_dec(CvOUTSIDE(cv)); | |
4086 | CvOUTSIDE(cv) = Nullcv; | |
4087 | } | |
beab0874 JT |
4088 | if (CvCONST(cv)) { |
4089 | SvREFCNT_dec((SV*)CvXSUBANY(cv).any_ptr); | |
4090 | CvCONST_off(cv); | |
4091 | } | |
50762d59 DM |
4092 | if (CvXSUB(cv)) { |
4093 | CvXSUB(cv) = 0; | |
4094 | } | |
7dafbf52 DM |
4095 | /* delete all flags except WEAKOUTSIDE */ |
4096 | CvFLAGS(cv) &= CVf_WEAKOUTSIDE; | |
79072805 LW |
4097 | } |
4098 | ||
3fe9a6f1 | 4099 | void |
35a4481c | 4100 | Perl_cv_ckproto(pTHX_ const CV *cv, const GV *gv, const char *p) |
3fe9a6f1 | 4101 | { |
b15aece3 | 4102 | if (((!p != !SvPOK(cv)) || (p && strNE(p, SvPVX_const(cv)))) && ckWARN_d(WARN_PROTOTYPE)) { |
2d03de9c | 4103 | SV* const msg = sv_newmortal(); |
3fe9a6f1 | 4104 | SV* name = Nullsv; |
4105 | ||
4106 | if (gv) | |
46fc3d4c | 4107 | gv_efullname3(name = sv_newmortal(), gv, Nullch); |
4108 | sv_setpv(msg, "Prototype mismatch:"); | |
4109 | if (name) | |
894356b3 | 4110 | Perl_sv_catpvf(aTHX_ msg, " sub %"SVf, name); |
3fe9a6f1 | 4111 | if (SvPOK(cv)) |
e1ec3a88 | 4112 | Perl_sv_catpvf(aTHX_ msg, " (%"SVf")", (const SV *)cv); |
ebe643b9 | 4113 | else |
54667de8 | 4114 | Perl_sv_catpv(aTHX_ msg, ": none"); |
46fc3d4c | 4115 | sv_catpv(msg, " vs "); |
4116 | if (p) | |
cea2e8a9 | 4117 | Perl_sv_catpvf(aTHX_ msg, "(%s)", p); |
46fc3d4c | 4118 | else |
4119 | sv_catpv(msg, "none"); | |
9014280d | 4120 | Perl_warner(aTHX_ packWARN(WARN_PROTOTYPE), "%"SVf, msg); |
3fe9a6f1 | 4121 | } |
4122 | } | |
4123 | ||
35f1c1c7 SB |
4124 | static void const_sv_xsub(pTHX_ CV* cv); |
4125 | ||
beab0874 | 4126 | /* |
ccfc67b7 JH |
4127 | |
4128 | =head1 Optree Manipulation Functions | |
4129 | ||
beab0874 JT |
4130 | =for apidoc cv_const_sv |
4131 | ||
4132 | If C<cv> is a constant sub eligible for inlining. returns the constant | |
4133 | value returned by the sub. Otherwise, returns NULL. | |
4134 | ||
4135 | Constant subs can be created with C<newCONSTSUB> or as described in | |
4136 | L<perlsub/"Constant Functions">. | |
4137 | ||
4138 | =cut | |
4139 | */ | |
760ac839 | 4140 | SV * |
864dbfa3 | 4141 | Perl_cv_const_sv(pTHX_ CV *cv) |
760ac839 | 4142 | { |
beab0874 | 4143 | if (!cv || !CvCONST(cv)) |
54310121 | 4144 | return Nullsv; |
beab0874 | 4145 | return (SV*)CvXSUBANY(cv).any_ptr; |
fe5e78ed | 4146 | } |
760ac839 | 4147 | |
b5c19bd7 DM |
4148 | /* op_const_sv: examine an optree to determine whether it's in-lineable. |
4149 | * Can be called in 3 ways: | |
4150 | * | |
4151 | * !cv | |
4152 | * look for a single OP_CONST with attached value: return the value | |
4153 | * | |
4154 | * cv && CvCLONE(cv) && !CvCONST(cv) | |
4155 | * | |
4156 | * examine the clone prototype, and if contains only a single | |
4157 | * OP_CONST referencing a pad const, or a single PADSV referencing | |
4158 | * an outer lexical, return a non-zero value to indicate the CV is | |
4159 | * a candidate for "constizing" at clone time | |
4160 | * | |
4161 | * cv && CvCONST(cv) | |
4162 | * | |
4163 | * We have just cloned an anon prototype that was marked as a const | |
4164 | * candidiate. Try to grab the current value, and in the case of | |
4165 | * PADSV, ignore it if it has multiple references. Return the value. | |
4166 | */ | |
4167 | ||
fe5e78ed | 4168 | SV * |
6867be6d | 4169 | Perl_op_const_sv(pTHX_ const OP *o, CV *cv) |
fe5e78ed GS |
4170 | { |
4171 | SV *sv = Nullsv; | |
4172 | ||
0f79a09d | 4173 | if (!o) |
fe5e78ed | 4174 | return Nullsv; |
1c846c1f NIS |
4175 | |
4176 | if (o->op_type == OP_LINESEQ && cLISTOPo->op_first) | |
fe5e78ed GS |
4177 | o = cLISTOPo->op_first->op_sibling; |
4178 | ||
4179 | for (; o; o = o->op_next) { | |
890ce7af | 4180 | const OPCODE type = o->op_type; |
fe5e78ed | 4181 | |
1c846c1f | 4182 | if (sv && o->op_next == o) |
fe5e78ed | 4183 | return sv; |
e576b457 JT |
4184 | if (o->op_next != o) { |
4185 | if (type == OP_NEXTSTATE || type == OP_NULL || type == OP_PUSHMARK) | |
4186 | continue; | |
4187 | if (type == OP_DBSTATE) | |
4188 | continue; | |
4189 | } | |
54310121 | 4190 | if (type == OP_LEAVESUB || type == OP_RETURN) |
4191 | break; | |
4192 | if (sv) | |
4193 | return Nullsv; | |
7766f137 | 4194 | if (type == OP_CONST && cSVOPo->op_sv) |
5dc0d613 | 4195 | sv = cSVOPo->op_sv; |
b5c19bd7 | 4196 | else if (cv && type == OP_CONST) { |
dd2155a4 | 4197 | sv = PAD_BASE_SV(CvPADLIST(cv), o->op_targ); |
beab0874 JT |
4198 | if (!sv) |
4199 | return Nullsv; | |
b5c19bd7 DM |
4200 | } |
4201 | else if (cv && type == OP_PADSV) { | |
4202 | if (CvCONST(cv)) { /* newly cloned anon */ | |
4203 | sv = PAD_BASE_SV(CvPADLIST(cv), o->op_targ); | |
4204 | /* the candidate should have 1 ref from this pad and 1 ref | |
4205 | * from the parent */ | |
4206 | if (!sv || SvREFCNT(sv) != 2) | |
4207 | return Nullsv; | |
beab0874 | 4208 | sv = newSVsv(sv); |
b5c19bd7 DM |
4209 | SvREADONLY_on(sv); |
4210 | return sv; | |
4211 | } | |
4212 | else { | |
4213 | if (PAD_COMPNAME_FLAGS(o->op_targ) & SVf_FAKE) | |
4214 | sv = &PL_sv_undef; /* an arbitrary non-null value */ | |
beab0874 | 4215 | } |
760ac839 | 4216 | } |
b5c19bd7 | 4217 | else { |
54310121 | 4218 | return Nullsv; |
b5c19bd7 | 4219 | } |
760ac839 LW |
4220 | } |
4221 | return sv; | |
4222 | } | |
4223 | ||
09bef843 SB |
4224 | void |
4225 | Perl_newMYSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, OP *block) | |
4226 | { | |
46c461b5 AL |
4227 | PERL_UNUSED_ARG(floor); |
4228 | ||
09bef843 SB |
4229 | if (o) |
4230 | SAVEFREEOP(o); | |
4231 | if (proto) | |
4232 | SAVEFREEOP(proto); | |
4233 | if (attrs) | |
4234 | SAVEFREEOP(attrs); | |
4235 | if (block) | |
4236 | SAVEFREEOP(block); | |
4237 | Perl_croak(aTHX_ "\"my sub\" not yet implemented"); | |
4238 | } | |
4239 | ||
748a9306 | 4240 | CV * |
864dbfa3 | 4241 | Perl_newSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *block) |
79072805 | 4242 | { |
09bef843 SB |
4243 | return Perl_newATTRSUB(aTHX_ floor, o, proto, Nullop, block); |
4244 | } | |
4245 | ||
4246 | CV * | |
4247 | Perl_newATTRSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, OP *block) | |
4248 | { | |
27da23d5 | 4249 | dVAR; |
6867be6d | 4250 | const char *aname; |
83ee9e09 | 4251 | GV *gv; |
5c144d81 | 4252 | const char *ps; |
ea6e9374 | 4253 | STRLEN ps_len; |
a2008d6d | 4254 | register CV *cv=0; |
beab0874 | 4255 | SV *const_sv; |
61dbb99a | 4256 | I32 gv_fetch_flags; |
79072805 | 4257 | |
8b6b16e7 | 4258 | const char * const name = o ? SvPVx_nolen_const(cSVOPo->op_sv) : Nullch; |
8e742a20 MHM |
4259 | |
4260 | if (proto) { | |
4261 | assert(proto->op_type == OP_CONST); | |
5c144d81 | 4262 | ps = SvPVx_const(((SVOP*)proto)->op_sv, ps_len); |
8e742a20 MHM |
4263 | } |
4264 | else | |
4265 | ps = Nullch; | |
4266 | ||
83ee9e09 | 4267 | if (!name && PERLDB_NAMEANON && CopLINE(PL_curcop)) { |
aec46f14 | 4268 | SV * const sv = sv_newmortal(); |
c99da370 JH |
4269 | Perl_sv_setpvf(aTHX_ sv, "%s[%s:%"IVdf"]", |
4270 | PL_curstash ? "__ANON__" : "__ANON__::__ANON__", | |
83ee9e09 | 4271 | CopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); |
b15aece3 | 4272 | aname = SvPVX_const(sv); |
83ee9e09 GS |
4273 | } |
4274 | else | |
4275 | aname = Nullch; | |
61dbb99a SF |
4276 | |
4277 | gv_fetch_flags = (block || attrs || (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS)) | |
4278 | ? GV_ADDMULTI : GV_ADDMULTI | GV_NOINIT; | |
4279 | gv = name ? gv_fetchsv(cSVOPo->op_sv, gv_fetch_flags, SVt_PVCV) | |
7a5fd60d NC |
4280 | : gv_fetchpv(aname ? aname |
4281 | : (PL_curstash ? "__ANON__" : "__ANON__::__ANON__"), | |
61dbb99a | 4282 | gv_fetch_flags, SVt_PVCV); |
83ee9e09 | 4283 | |
11343788 | 4284 | if (o) |
5dc0d613 | 4285 | SAVEFREEOP(o); |
3fe9a6f1 | 4286 | if (proto) |
4287 | SAVEFREEOP(proto); | |
09bef843 SB |
4288 | if (attrs) |
4289 | SAVEFREEOP(attrs); | |
3fe9a6f1 | 4290 | |
09bef843 | 4291 | if (SvTYPE(gv) != SVt_PVGV) { /* Maybe prototype now, and had at |
55d729e4 GS |
4292 | maximum a prototype before. */ |
4293 | if (SvTYPE(gv) > SVt_NULL) { | |
0453d815 | 4294 | if (!SvPOK((SV*)gv) && !(SvIOK((SV*)gv) && SvIVX((SV*)gv) == -1) |
e476b1b5 | 4295 | && ckWARN_d(WARN_PROTOTYPE)) |
f248d071 | 4296 | { |
9014280d | 4297 | Perl_warner(aTHX_ packWARN(WARN_PROTOTYPE), "Runaway prototype"); |
f248d071 | 4298 | } |
55d729e4 GS |
4299 | cv_ckproto((CV*)gv, NULL, ps); |
4300 | } | |
4301 | if (ps) | |
ea6e9374 | 4302 | sv_setpvn((SV*)gv, ps, ps_len); |
55d729e4 GS |
4303 | else |
4304 | sv_setiv((SV*)gv, -1); | |
3280af22 NIS |
4305 | SvREFCNT_dec(PL_compcv); |
4306 | cv = PL_compcv = NULL; | |
4307 | PL_sub_generation++; | |
beab0874 | 4308 | goto done; |
55d729e4 GS |
4309 | } |
4310 | ||
beab0874 JT |
4311 | cv = (!name || GvCVGEN(gv)) ? Nullcv : GvCV(gv); |
4312 | ||
7fb37951 AMS |
4313 | #ifdef GV_UNIQUE_CHECK |
4314 | if (cv && GvUNIQUE(gv) && SvREADONLY(cv)) { | |
4315 | Perl_croak(aTHX_ "Can't define subroutine %s (GV is unique)", name); | |
5bd07a3d DM |
4316 | } |
4317 | #endif | |
4318 | ||
2e8a6c53 | 4319 | if (!block || !ps || *ps || attrs || (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS)) |
beab0874 JT |
4320 | const_sv = Nullsv; |
4321 | else | |
4322 | const_sv = op_const_sv(block, Nullcv); | |
4323 | ||
4324 | if (cv) { | |
6867be6d | 4325 | const bool exists = CvROOT(cv) || CvXSUB(cv); |
5bd07a3d | 4326 | |
7fb37951 AMS |
4327 | #ifdef GV_UNIQUE_CHECK |
4328 | if (exists && GvUNIQUE(gv)) { | |
4329 | Perl_croak(aTHX_ "Can't redefine unique subroutine %s", name); | |
5bd07a3d DM |
4330 | } |
4331 | #endif | |
4332 | ||
60ed1d8c GS |
4333 | /* if the subroutine doesn't exist and wasn't pre-declared |
4334 | * with a prototype, assume it will be AUTOLOADed, | |
4335 | * skipping the prototype check | |
4336 | */ | |
4337 | if (exists || SvPOK(cv)) | |
01ec43d0 | 4338 | cv_ckproto(cv, gv, ps); |
68dc0745 | 4339 | /* already defined (or promised)? */ |
60ed1d8c | 4340 | if (exists || GvASSUMECV(gv)) { |
09bef843 | 4341 | if (!block && !attrs) { |
d3cea301 SB |
4342 | if (CvFLAGS(PL_compcv)) { |
4343 | /* might have had built-in attrs applied */ | |
4344 | CvFLAGS(cv) |= (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS); | |
4345 | } | |
aa689395 | 4346 | /* just a "sub foo;" when &foo is already defined */ |
3280af22 | 4347 | SAVEFREESV(PL_compcv); |
aa689395 | 4348 | goto done; |
4349 | } | |
beab0874 JT |
4350 | if (block) { |
4351 | if (ckWARN(WARN_REDEFINE) | |
4352 | || (CvCONST(cv) | |
4353 | && (!const_sv || sv_cmp(cv_const_sv(cv), const_sv)))) | |
4354 | { | |
6867be6d | 4355 | const line_t oldline = CopLINE(PL_curcop); |
d8a34499 IK |
4356 | if (PL_copline != NOLINE) |
4357 | CopLINE_set(PL_curcop, PL_copline); | |
9014280d | 4358 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), |
beab0874 JT |
4359 | CvCONST(cv) ? "Constant subroutine %s redefined" |
4360 | : "Subroutine %s redefined", name); | |
4361 | CopLINE_set(PL_curcop, oldline); | |
4362 | } | |
4363 | SvREFCNT_dec(cv); | |
4364 | cv = Nullcv; | |
79072805 | 4365 | } |
79072805 LW |
4366 | } |
4367 | } | |
beab0874 | 4368 | if (const_sv) { |
7fc63493 | 4369 | (void)SvREFCNT_inc(const_sv); |
beab0874 | 4370 | if (cv) { |
0768512c | 4371 | assert(!CvROOT(cv) && !CvCONST(cv)); |
c69006e4 | 4372 | sv_setpvn((SV*)cv, "", 0); /* prototype is "" */ |
beab0874 JT |
4373 | CvXSUBANY(cv).any_ptr = const_sv; |
4374 | CvXSUB(cv) = const_sv_xsub; | |
4375 | CvCONST_on(cv); | |
beab0874 JT |
4376 | } |
4377 | else { | |
4378 | GvCV(gv) = Nullcv; | |
4379 | cv = newCONSTSUB(NULL, name, const_sv); | |
4380 | } | |
4381 | op_free(block); | |
4382 | SvREFCNT_dec(PL_compcv); | |
4383 | PL_compcv = NULL; | |
4384 | PL_sub_generation++; | |
4385 | goto done; | |
4386 | } | |
09bef843 SB |
4387 | if (attrs) { |
4388 | HV *stash; | |
4389 | SV *rcv; | |
4390 | ||
4391 | /* Need to do a C<use attributes $stash_of_cv,\&cv,@attrs> | |
4392 | * before we clobber PL_compcv. | |
4393 | */ | |
4394 | if (cv && !block) { | |
4395 | rcv = (SV*)cv; | |
020f0e03 SB |
4396 | /* Might have had built-in attributes applied -- propagate them. */ |
4397 | CvFLAGS(cv) |= (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS); | |
a9164de8 | 4398 | if (CvGV(cv) && GvSTASH(CvGV(cv))) |
09bef843 | 4399 | stash = GvSTASH(CvGV(cv)); |
a9164de8 | 4400 | else if (CvSTASH(cv)) |
09bef843 SB |
4401 | stash = CvSTASH(cv); |
4402 | else | |
4403 | stash = PL_curstash; | |
4404 | } | |
4405 | else { | |
4406 | /* possibly about to re-define existing subr -- ignore old cv */ | |
4407 | rcv = (SV*)PL_compcv; | |
a9164de8 | 4408 | if (name && GvSTASH(gv)) |
09bef843 SB |
4409 | stash = GvSTASH(gv); |
4410 | else | |
4411 | stash = PL_curstash; | |
4412 | } | |
95f0a2f1 | 4413 | apply_attrs(stash, rcv, attrs, FALSE); |
09bef843 | 4414 | } |
a0d0e21e | 4415 | if (cv) { /* must reuse cv if autoloaded */ |
09bef843 SB |
4416 | if (!block) { |
4417 | /* got here with just attrs -- work done, so bug out */ | |
4418 | SAVEFREESV(PL_compcv); | |
4419 | goto done; | |
4420 | } | |
a3985cdc | 4421 | /* transfer PL_compcv to cv */ |
4633a7c4 | 4422 | cv_undef(cv); |
3280af22 | 4423 | CvFLAGS(cv) = CvFLAGS(PL_compcv); |
5c41a5fa DM |
4424 | if (!CvWEAKOUTSIDE(cv)) |
4425 | SvREFCNT_dec(CvOUTSIDE(cv)); | |
3280af22 | 4426 | CvOUTSIDE(cv) = CvOUTSIDE(PL_compcv); |
a3985cdc | 4427 | CvOUTSIDE_SEQ(cv) = CvOUTSIDE_SEQ(PL_compcv); |
3280af22 NIS |
4428 | CvOUTSIDE(PL_compcv) = 0; |
4429 | CvPADLIST(cv) = CvPADLIST(PL_compcv); | |
4430 | CvPADLIST(PL_compcv) = 0; | |
282f25c9 | 4431 | /* inner references to PL_compcv must be fixed up ... */ |
dd2155a4 | 4432 | pad_fixup_inner_anons(CvPADLIST(cv), PL_compcv, cv); |
282f25c9 | 4433 | /* ... before we throw it away */ |
3280af22 | 4434 | SvREFCNT_dec(PL_compcv); |
b5c19bd7 | 4435 | PL_compcv = cv; |
a933f601 IZ |
4436 | if (PERLDB_INTER)/* Advice debugger on the new sub. */ |
4437 | ++PL_sub_generation; | |
a0d0e21e LW |
4438 | } |
4439 | else { | |
3280af22 | 4440 | cv = PL_compcv; |
44a8e56a | 4441 | if (name) { |
4442 | GvCV(gv) = cv; | |
4443 | GvCVGEN(gv) = 0; | |
3280af22 | 4444 | PL_sub_generation++; |
44a8e56a | 4445 | } |
a0d0e21e | 4446 | } |
65c50114 | 4447 | CvGV(cv) = gv; |
a636914a | 4448 | CvFILE_set_from_cop(cv, PL_curcop); |
3280af22 | 4449 | CvSTASH(cv) = PL_curstash; |
8990e307 | 4450 | |
3fe9a6f1 | 4451 | if (ps) |
ea6e9374 | 4452 | sv_setpvn((SV*)cv, ps, ps_len); |
4633a7c4 | 4453 | |
3280af22 | 4454 | if (PL_error_count) { |
c07a80fd | 4455 | op_free(block); |
4456 | block = Nullop; | |
68dc0745 | 4457 | if (name) { |
6867be6d | 4458 | const char *s = strrchr(name, ':'); |
68dc0745 | 4459 | s = s ? s+1 : name; |
6d4c2119 | 4460 | if (strEQ(s, "BEGIN")) { |
e1ec3a88 | 4461 | const char not_safe[] = |
6d4c2119 | 4462 | "BEGIN not safe after errors--compilation aborted"; |
faef0170 | 4463 | if (PL_in_eval & EVAL_KEEPERR) |
cea2e8a9 | 4464 | Perl_croak(aTHX_ not_safe); |
6d4c2119 CS |
4465 | else { |
4466 | /* force display of errors found but not reported */ | |
38a03e6e | 4467 | sv_catpv(ERRSV, not_safe); |
35c1215d | 4468 | Perl_croak(aTHX_ "%"SVf, ERRSV); |
6d4c2119 CS |
4469 | } |
4470 | } | |
68dc0745 | 4471 | } |
c07a80fd | 4472 | } |
beab0874 JT |
4473 | if (!block) |
4474 | goto done; | |
a0d0e21e | 4475 | |
7766f137 | 4476 | if (CvLVALUE(cv)) { |
78f9721b SM |
4477 | CvROOT(cv) = newUNOP(OP_LEAVESUBLV, 0, |
4478 | mod(scalarseq(block), OP_LEAVESUBLV)); | |
7766f137 GS |
4479 | } |
4480 | else { | |
09c2fd24 AE |
4481 | /* This makes sub {}; work as expected. */ |
4482 | if (block->op_type == OP_STUB) { | |
4483 | op_free(block); | |
4484 | block = newSTATEOP(0, Nullch, 0); | |
4485 | } | |
7766f137 GS |
4486 | CvROOT(cv) = newUNOP(OP_LEAVESUB, 0, scalarseq(block)); |
4487 | } | |
4488 | CvROOT(cv)->op_private |= OPpREFCOUNTED; | |
4489 | OpREFCNT_set(CvROOT(cv), 1); | |
4490 | CvSTART(cv) = LINKLIST(CvROOT(cv)); | |
4491 | CvROOT(cv)->op_next = 0; | |
a2efc822 | 4492 | CALL_PEEP(CvSTART(cv)); |
7766f137 GS |
4493 | |
4494 | /* now that optimizer has done its work, adjust pad values */ | |
54310121 | 4495 | |
dd2155a4 DM |
4496 | pad_tidy(CvCLONE(cv) ? padtidy_SUBCLONE : padtidy_SUB); |
4497 | ||
4498 | if (CvCLONE(cv)) { | |
beab0874 JT |
4499 | assert(!CvCONST(cv)); |
4500 | if (ps && !*ps && op_const_sv(block, cv)) | |
4501 | CvCONST_on(cv); | |
a0d0e21e | 4502 | } |
79072805 | 4503 | |
83ee9e09 | 4504 | if (name || aname) { |
6867be6d AL |
4505 | const char *s; |
4506 | const char *tname = (name ? name : aname); | |
44a8e56a | 4507 | |
3280af22 | 4508 | if (PERLDB_SUBLINE && PL_curstash != PL_debstash) { |
c4420975 AL |
4509 | SV * const sv = NEWSV(0,0); |
4510 | SV * const tmpstr = sv_newmortal(); | |
dcda55fc | 4511 | GV * const db_postponed = gv_fetchpv("DB::postponed", GV_ADDMULTI, SVt_PVHV); |
44a8e56a | 4512 | HV *hv; |
4513 | ||
ed094faf GS |
4514 | Perl_sv_setpvf(aTHX_ sv, "%s:%ld-%ld", |
4515 | CopFILE(PL_curcop), | |
cc49e20b | 4516 | (long)PL_subline, (long)CopLINE(PL_curcop)); |
44a8e56a | 4517 | gv_efullname3(tmpstr, gv, Nullch); |
b15aece3 | 4518 | hv_store(GvHV(PL_DBsub), SvPVX_const(tmpstr), SvCUR(tmpstr), sv, 0); |
44a8e56a | 4519 | hv = GvHVn(db_postponed); |
551405c4 AL |
4520 | if (HvFILL(hv) > 0 && hv_exists(hv, SvPVX_const(tmpstr), SvCUR(tmpstr))) { |
4521 | CV * const pcv = GvCV(db_postponed); | |
4522 | if (pcv) { | |
4523 | dSP; | |
4524 | PUSHMARK(SP); | |
4525 | XPUSHs(tmpstr); | |
4526 | PUTBACK; | |
4527 | call_sv((SV*)pcv, G_DISCARD); | |
4528 | } | |
44a8e56a | 4529 | } |
4530 | } | |
79072805 | 4531 | |
83ee9e09 | 4532 | if ((s = strrchr(tname,':'))) |
28757baa | 4533 | s++; |
4534 | else | |
83ee9e09 | 4535 | s = tname; |
ed094faf | 4536 | |
7d30b5c4 | 4537 | if (*s != 'B' && *s != 'E' && *s != 'C' && *s != 'I') |
ed094faf GS |
4538 | goto done; |
4539 | ||
7678c486 | 4540 | if (strEQ(s, "BEGIN") && !PL_error_count) { |
678f9f8e | 4541 | dSP; |
6867be6d | 4542 | const I32 oldscope = PL_scopestack_ix; |
28757baa | 4543 | ENTER; |
678f9f8e | 4544 | PUSHSTACKi(PERLSI_REQUIRE); |
57843af0 GS |
4545 | SAVECOPFILE(&PL_compiling); |
4546 | SAVECOPLINE(&PL_compiling); | |
28757baa | 4547 | |
3280af22 NIS |
4548 | if (!PL_beginav) |
4549 | PL_beginav = newAV(); | |
28757baa | 4550 | DEBUG_x( dump_sub(gv) ); |
ea2f84a3 GS |
4551 | av_push(PL_beginav, (SV*)cv); |
4552 | GvCV(gv) = 0; /* cv has been hijacked */ | |
3280af22 | 4553 | call_list(oldscope, PL_beginav); |
a6006777 | 4554 | |
3280af22 | 4555 | PL_curcop = &PL_compiling; |
eb160463 | 4556 | PL_compiling.op_private = (U8)(PL_hints & HINT_PRIVATE_MASK); |
678f9f8e | 4557 | POPSTACK; |
28757baa | 4558 | LEAVE; |
4559 | } | |
3280af22 NIS |
4560 | else if (strEQ(s, "END") && !PL_error_count) { |
4561 | if (!PL_endav) | |
4562 | PL_endav = newAV(); | |
ed094faf | 4563 | DEBUG_x( dump_sub(gv) ); |
3280af22 | 4564 | av_unshift(PL_endav, 1); |
ea2f84a3 GS |
4565 | av_store(PL_endav, 0, (SV*)cv); |
4566 | GvCV(gv) = 0; /* cv has been hijacked */ | |
28757baa | 4567 | } |
7d30b5c4 GS |
4568 | else if (strEQ(s, "CHECK") && !PL_error_count) { |
4569 | if (!PL_checkav) | |
4570 | PL_checkav = newAV(); | |
ed094faf | 4571 | DEBUG_x( dump_sub(gv) ); |
ddda08b7 | 4572 | if (PL_main_start && ckWARN(WARN_VOID)) |
9014280d | 4573 | Perl_warner(aTHX_ packWARN(WARN_VOID), "Too late to run CHECK block"); |
7d30b5c4 | 4574 | av_unshift(PL_checkav, 1); |
ea2f84a3 GS |
4575 | av_store(PL_checkav, 0, (SV*)cv); |
4576 | GvCV(gv) = 0; /* cv has been hijacked */ | |
4f25aa18 | 4577 | } |
3280af22 NIS |
4578 | else if (strEQ(s, "INIT") && !PL_error_count) { |
4579 | if (!PL_initav) | |
4580 | PL_initav = newAV(); | |
ed094faf | 4581 | DEBUG_x( dump_sub(gv) ); |
ddda08b7 | 4582 | if (PL_main_start && ckWARN(WARN_VOID)) |
9014280d | 4583 | Perl_warner(aTHX_ packWARN(WARN_VOID), "Too late to run INIT block"); |
ea2f84a3 GS |
4584 | av_push(PL_initav, (SV*)cv); |
4585 | GvCV(gv) = 0; /* cv has been hijacked */ | |
ae77835f | 4586 | } |
79072805 | 4587 | } |
a6006777 | 4588 | |
aa689395 | 4589 | done: |
3280af22 | 4590 | PL_copline = NOLINE; |
8990e307 | 4591 | LEAVE_SCOPE(floor); |
a0d0e21e | 4592 | return cv; |
79072805 LW |
4593 | } |
4594 | ||
b099ddc0 | 4595 | /* XXX unsafe for threads if eval_owner isn't held */ |
954c1994 GS |
4596 | /* |
4597 | =for apidoc newCONSTSUB | |
4598 | ||
4599 | Creates a constant sub equivalent to Perl C<sub FOO () { 123 }> which is | |
4600 | eligible for inlining at compile-time. | |
4601 | ||
4602 | =cut | |
4603 | */ | |
4604 | ||
beab0874 | 4605 | CV * |
e1ec3a88 | 4606 | Perl_newCONSTSUB(pTHX_ HV *stash, const char *name, SV *sv) |
5476c433 | 4607 | { |
27da23d5 | 4608 | dVAR; |
beab0874 | 4609 | CV* cv; |
5476c433 | 4610 | |
11faa288 | 4611 | ENTER; |
11faa288 | 4612 | |
f4dd75d9 | 4613 | SAVECOPLINE(PL_curcop); |
11faa288 | 4614 | CopLINE_set(PL_curcop, PL_copline); |
f4dd75d9 GS |
4615 | |
4616 | SAVEHINTS(); | |
3280af22 | 4617 | PL_hints &= ~HINT_BLOCK_SCOPE; |
11faa288 GS |
4618 | |
4619 | if (stash) { | |
4620 | SAVESPTR(PL_curstash); | |
4621 | SAVECOPSTASH(PL_curcop); | |
4622 | PL_curstash = stash; | |
05ec9bb3 | 4623 | CopSTASH_set(PL_curcop,stash); |
11faa288 | 4624 | } |
5476c433 | 4625 | |
91a15d0d | 4626 | cv = newXS(name, const_sv_xsub, savepv(CopFILE(PL_curcop))); |
beab0874 JT |
4627 | CvXSUBANY(cv).any_ptr = sv; |
4628 | CvCONST_on(cv); | |
c69006e4 | 4629 | sv_setpvn((SV*)cv, "", 0); /* prototype is "" */ |
5476c433 | 4630 | |
65e66c80 | 4631 | #ifdef USE_ITHREADS |
02f28d44 MHM |
4632 | if (stash) |
4633 | CopSTASH_free(PL_curcop); | |
65e66c80 | 4634 | #endif |
11faa288 | 4635 | LEAVE; |
beab0874 JT |
4636 | |
4637 | return cv; | |
5476c433 JD |
4638 | } |
4639 | ||
954c1994 GS |
4640 | /* |
4641 | =for apidoc U||newXS | |
4642 | ||
4643 | Used by C<xsubpp> to hook up XSUBs as Perl subs. | |
4644 | ||
4645 | =cut | |
4646 | */ | |
4647 | ||
57d3b86d | 4648 | CV * |
bfed75c6 | 4649 | Perl_newXS(pTHX_ const char *name, XSUBADDR_t subaddr, const char *filename) |
a0d0e21e | 4650 | { |
9a957fbc | 4651 | GV * const gv = gv_fetchpv(name ? name : |
c99da370 JH |
4652 | (PL_curstash ? "__ANON__" : "__ANON__::__ANON__"), |
4653 | GV_ADDMULTI, SVt_PVCV); | |
79072805 | 4654 | register CV *cv; |
44a8e56a | 4655 | |
1ecdd9a8 HS |
4656 | if (!subaddr) |
4657 | Perl_croak(aTHX_ "panic: no address for '%s' in '%s'", name, filename); | |
4658 | ||
155aba94 | 4659 | if ((cv = (name ? GvCV(gv) : Nullcv))) { |
44a8e56a | 4660 | if (GvCVGEN(gv)) { |
4661 | /* just a cached method */ | |
4662 | SvREFCNT_dec(cv); | |
66a1b24b | 4663 | cv = Nullcv; |
44a8e56a | 4664 | } |
4665 | else if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
4666 | /* already defined (or promised) */ | |
1df70142 | 4667 | /* XXX It's possible for this HvNAME_get to return null, and get passed into strEQ */ |
66a1b24b AL |
4668 | if (ckWARN(WARN_REDEFINE)) { |
4669 | GV * const gvcv = CvGV(cv); | |
4670 | if (gvcv) { | |
4671 | HV * const stash = GvSTASH(gvcv); | |
4672 | if (stash) { | |
4673 | const char *name = HvNAME_get(stash); | |
4674 | if ( strEQ(name,"autouse") ) { | |
4675 | const line_t oldline = CopLINE(PL_curcop); | |
4676 | if (PL_copline != NOLINE) | |
4677 | CopLINE_set(PL_curcop, PL_copline); | |
4678 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), | |
4679 | CvCONST(cv) ? "Constant subroutine %s redefined" | |
4680 | : "Subroutine %s redefined" | |
4681 | ,name); | |
4682 | CopLINE_set(PL_curcop, oldline); | |
4683 | } | |
4684 | } | |
4685 | } | |
a0d0e21e LW |
4686 | } |
4687 | SvREFCNT_dec(cv); | |
66a1b24b | 4688 | cv = Nullcv; |
79072805 | 4689 | } |
79072805 | 4690 | } |
44a8e56a | 4691 | |
4692 | if (cv) /* must reuse cv if autoloaded */ | |
4693 | cv_undef(cv); | |
a0d0e21e LW |
4694 | else { |
4695 | cv = (CV*)NEWSV(1105,0); | |
4696 | sv_upgrade((SV *)cv, SVt_PVCV); | |
44a8e56a | 4697 | if (name) { |
4698 | GvCV(gv) = cv; | |
4699 | GvCVGEN(gv) = 0; | |
3280af22 | 4700 | PL_sub_generation++; |
44a8e56a | 4701 | } |
a0d0e21e | 4702 | } |
65c50114 | 4703 | CvGV(cv) = gv; |
b195d487 | 4704 | (void)gv_fetchfile(filename); |
dd374669 | 4705 | CvFILE(cv) = (char *)filename; /* NOTE: not copied, as it is expected to be |
57843af0 | 4706 | an external constant string */ |
a0d0e21e | 4707 | CvXSUB(cv) = subaddr; |
44a8e56a | 4708 | |
28757baa | 4709 | if (name) { |
e1ec3a88 | 4710 | const char *s = strrchr(name,':'); |
28757baa | 4711 | if (s) |
4712 | s++; | |
4713 | else | |
4714 | s = name; | |
ed094faf | 4715 | |
7d30b5c4 | 4716 | if (*s != 'B' && *s != 'E' && *s != 'C' && *s != 'I') |
ed094faf GS |
4717 | goto done; |
4718 | ||
28757baa | 4719 | if (strEQ(s, "BEGIN")) { |
3280af22 NIS |
4720 | if (!PL_beginav) |
4721 | PL_beginav = newAV(); | |
ea2f84a3 GS |
4722 | av_push(PL_beginav, (SV*)cv); |
4723 | GvCV(gv) = 0; /* cv has been hijacked */ | |
28757baa | 4724 | } |
4725 | else if (strEQ(s, "END")) { | |
3280af22 NIS |
4726 | if (!PL_endav) |
4727 | PL_endav = newAV(); | |
4728 | av_unshift(PL_endav, 1); | |
ea2f84a3 GS |
4729 | av_store(PL_endav, 0, (SV*)cv); |
4730 | GvCV(gv) = 0; /* cv has been hijacked */ | |
28757baa | 4731 | } |
7d30b5c4 GS |
4732 | else if (strEQ(s, "CHECK")) { |
4733 | if (!PL_checkav) | |
4734 | PL_checkav = newAV(); | |
ddda08b7 | 4735 | if (PL_main_start && ckWARN(WARN_VOID)) |
9014280d | 4736 | Perl_warner(aTHX_ packWARN(WARN_VOID), "Too late to run CHECK block"); |
7d30b5c4 | 4737 | av_unshift(PL_checkav, 1); |
ea2f84a3 GS |
4738 | av_store(PL_checkav, 0, (SV*)cv); |
4739 | GvCV(gv) = 0; /* cv has been hijacked */ | |
4f25aa18 | 4740 | } |
7d07dbc2 | 4741 | else if (strEQ(s, "INIT")) { |
3280af22 NIS |
4742 | if (!PL_initav) |
4743 | PL_initav = newAV(); | |
ddda08b7 | 4744 | if (PL_main_start && ckWARN(WARN_VOID)) |
9014280d | 4745 | Perl_warner(aTHX_ packWARN(WARN_VOID), "Too late to run INIT block"); |
ea2f84a3 GS |
4746 | av_push(PL_initav, (SV*)cv); |
4747 | GvCV(gv) = 0; /* cv has been hijacked */ | |
ae77835f | 4748 | } |
28757baa | 4749 | } |
8990e307 | 4750 | else |
a5f75d66 | 4751 | CvANON_on(cv); |
44a8e56a | 4752 | |
ed094faf | 4753 | done: |
a0d0e21e | 4754 | return cv; |
79072805 LW |
4755 | } |
4756 | ||
4757 | void | |
864dbfa3 | 4758 | Perl_newFORM(pTHX_ I32 floor, OP *o, OP *block) |
79072805 LW |
4759 | { |
4760 | register CV *cv; | |
79072805 | 4761 | GV *gv; |
79072805 | 4762 | |
11343788 | 4763 | if (o) |
7a5fd60d | 4764 | gv = gv_fetchsv(cSVOPo->op_sv, TRUE, SVt_PVFM); |
79072805 | 4765 | else |
7a5fd60d NC |
4766 | gv = gv_fetchpv("STDOUT", TRUE, SVt_PVFM); |
4767 | ||
7fb37951 AMS |
4768 | #ifdef GV_UNIQUE_CHECK |
4769 | if (GvUNIQUE(gv)) { | |
4770 | Perl_croak(aTHX_ "Bad symbol for form (GV is unique)"); | |
5bd07a3d DM |
4771 | } |
4772 | #endif | |
a5f75d66 | 4773 | GvMULTI_on(gv); |
155aba94 | 4774 | if ((cv = GvFORM(gv))) { |
599cee73 | 4775 | if (ckWARN(WARN_REDEFINE)) { |
6867be6d | 4776 | const line_t oldline = CopLINE(PL_curcop); |
d8a34499 IK |
4777 | if (PL_copline != NOLINE) |
4778 | CopLINE_set(PL_curcop, PL_copline); | |
7a5fd60d NC |
4779 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), |
4780 | o ? "Format %"SVf" redefined" | |
4781 | : "Format STDOUT redefined" ,cSVOPo->op_sv); | |
57843af0 | 4782 | CopLINE_set(PL_curcop, oldline); |
79072805 | 4783 | } |
8990e307 | 4784 | SvREFCNT_dec(cv); |
79072805 | 4785 | } |
3280af22 | 4786 | cv = PL_compcv; |
79072805 | 4787 | GvFORM(gv) = cv; |
65c50114 | 4788 | CvGV(cv) = gv; |
a636914a | 4789 | CvFILE_set_from_cop(cv, PL_curcop); |
79072805 | 4790 | |
a0d0e21e | 4791 | |
dd2155a4 | 4792 | pad_tidy(padtidy_FORMAT); |
79072805 | 4793 | CvROOT(cv) = newUNOP(OP_LEAVEWRITE, 0, scalarseq(block)); |
7934575e GS |
4794 | CvROOT(cv)->op_private |= OPpREFCOUNTED; |
4795 | OpREFCNT_set(CvROOT(cv), 1); | |
79072805 LW |
4796 | CvSTART(cv) = LINKLIST(CvROOT(cv)); |
4797 | CvROOT(cv)->op_next = 0; | |
a2efc822 | 4798 | CALL_PEEP(CvSTART(cv)); |
11343788 | 4799 | op_free(o); |
3280af22 | 4800 | PL_copline = NOLINE; |
8990e307 | 4801 | LEAVE_SCOPE(floor); |
79072805 LW |
4802 | } |
4803 | ||
4804 | OP * | |
864dbfa3 | 4805 | Perl_newANONLIST(pTHX_ OP *o) |
79072805 | 4806 | { |
93a17b20 | 4807 | return newUNOP(OP_REFGEN, 0, |
11343788 | 4808 | mod(list(convert(OP_ANONLIST, 0, o)), OP_REFGEN)); |
79072805 LW |
4809 | } |
4810 | ||
4811 | OP * | |
864dbfa3 | 4812 | Perl_newANONHASH(pTHX_ OP *o) |
79072805 | 4813 | { |
93a17b20 | 4814 | return newUNOP(OP_REFGEN, 0, |
11343788 | 4815 | mod(list(convert(OP_ANONHASH, 0, o)), OP_REFGEN)); |
a0d0e21e LW |
4816 | } |
4817 | ||
4818 | OP * | |
864dbfa3 | 4819 | Perl_newANONSUB(pTHX_ I32 floor, OP *proto, OP *block) |
a0d0e21e | 4820 | { |
09bef843 SB |
4821 | return newANONATTRSUB(floor, proto, Nullop, block); |
4822 | } | |
4823 | ||
4824 | OP * | |
4825 | Perl_newANONATTRSUB(pTHX_ I32 floor, OP *proto, OP *attrs, OP *block) | |
4826 | { | |
a0d0e21e | 4827 | return newUNOP(OP_REFGEN, 0, |
09bef843 SB |
4828 | newSVOP(OP_ANONCODE, 0, |
4829 | (SV*)newATTRSUB(floor, 0, proto, attrs, block))); | |
79072805 LW |
4830 | } |
4831 | ||
4832 | OP * | |
864dbfa3 | 4833 | Perl_oopsAV(pTHX_ OP *o) |
79072805 | 4834 | { |
27da23d5 | 4835 | dVAR; |
ed6116ce LW |
4836 | switch (o->op_type) { |
4837 | case OP_PADSV: | |
4838 | o->op_type = OP_PADAV; | |
22c35a8c | 4839 | o->op_ppaddr = PL_ppaddr[OP_PADAV]; |
51e247a3 | 4840 | return ref(o, OP_RV2AV); |
b2ffa427 | 4841 | |
ed6116ce | 4842 | case OP_RV2SV: |
79072805 | 4843 | o->op_type = OP_RV2AV; |
22c35a8c | 4844 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
79072805 | 4845 | ref(o, OP_RV2AV); |
ed6116ce LW |
4846 | break; |
4847 | ||
4848 | default: | |
0453d815 | 4849 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 4850 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "oops: oopsAV"); |
ed6116ce LW |
4851 | break; |
4852 | } | |
79072805 LW |
4853 | return o; |
4854 | } | |
4855 | ||
4856 | OP * | |
864dbfa3 | 4857 | Perl_oopsHV(pTHX_ OP *o) |
79072805 | 4858 | { |
27da23d5 | 4859 | dVAR; |
ed6116ce LW |
4860 | switch (o->op_type) { |
4861 | case OP_PADSV: | |
4862 | case OP_PADAV: | |
4863 | o->op_type = OP_PADHV; | |
22c35a8c | 4864 | o->op_ppaddr = PL_ppaddr[OP_PADHV]; |
51e247a3 | 4865 | return ref(o, OP_RV2HV); |
ed6116ce LW |
4866 | |
4867 | case OP_RV2SV: | |
4868 | case OP_RV2AV: | |
79072805 | 4869 | o->op_type = OP_RV2HV; |
22c35a8c | 4870 | o->op_ppaddr = PL_ppaddr[OP_RV2HV]; |
79072805 | 4871 | ref(o, OP_RV2HV); |
ed6116ce LW |
4872 | break; |
4873 | ||
4874 | default: | |
0453d815 | 4875 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 4876 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "oops: oopsHV"); |
ed6116ce LW |
4877 | break; |
4878 | } | |
79072805 LW |
4879 | return o; |
4880 | } | |
4881 | ||
4882 | OP * | |
864dbfa3 | 4883 | Perl_newAVREF(pTHX_ OP *o) |
79072805 | 4884 | { |
27da23d5 | 4885 | dVAR; |
ed6116ce LW |
4886 | if (o->op_type == OP_PADANY) { |
4887 | o->op_type = OP_PADAV; | |
22c35a8c | 4888 | o->op_ppaddr = PL_ppaddr[OP_PADAV]; |
93a17b20 | 4889 | return o; |
ed6116ce | 4890 | } |
a1063b2d | 4891 | else if ((o->op_type == OP_RV2AV || o->op_type == OP_PADAV) |
9014280d PM |
4892 | && ckWARN(WARN_DEPRECATED)) { |
4893 | Perl_warner(aTHX_ packWARN(WARN_DEPRECATED), | |
a1063b2d RH |
4894 | "Using an array as a reference is deprecated"); |
4895 | } | |
79072805 LW |
4896 | return newUNOP(OP_RV2AV, 0, scalar(o)); |
4897 | } | |
4898 | ||
4899 | OP * | |
864dbfa3 | 4900 | Perl_newGVREF(pTHX_ I32 type, OP *o) |
79072805 | 4901 | { |
82092f1d | 4902 | if (type == OP_MAPSTART || type == OP_GREPSTART || type == OP_SORT) |
a0d0e21e | 4903 | return newUNOP(OP_NULL, 0, o); |
748a9306 | 4904 | return ref(newUNOP(OP_RV2GV, OPf_REF, o), type); |
79072805 LW |
4905 | } |
4906 | ||
4907 | OP * | |
864dbfa3 | 4908 | Perl_newHVREF(pTHX_ OP *o) |
79072805 | 4909 | { |
27da23d5 | 4910 | dVAR; |
ed6116ce LW |
4911 | if (o->op_type == OP_PADANY) { |
4912 | o->op_type = OP_PADHV; | |
22c35a8c | 4913 | o->op_ppaddr = PL_ppaddr[OP_PADHV]; |
93a17b20 | 4914 | return o; |
ed6116ce | 4915 | } |
a1063b2d | 4916 | else if ((o->op_type == OP_RV2HV || o->op_type == OP_PADHV) |
9014280d PM |
4917 | && ckWARN(WARN_DEPRECATED)) { |
4918 | Perl_warner(aTHX_ packWARN(WARN_DEPRECATED), | |
a1063b2d RH |
4919 | "Using a hash as a reference is deprecated"); |
4920 | } | |
79072805 LW |
4921 | return newUNOP(OP_RV2HV, 0, scalar(o)); |
4922 | } | |
4923 | ||
4924 | OP * | |
864dbfa3 | 4925 | Perl_newCVREF(pTHX_ I32 flags, OP *o) |
79072805 | 4926 | { |
c07a80fd | 4927 | return newUNOP(OP_RV2CV, flags, scalar(o)); |
79072805 LW |
4928 | } |
4929 | ||
4930 | OP * | |
864dbfa3 | 4931 | Perl_newSVREF(pTHX_ OP *o) |
79072805 | 4932 | { |
27da23d5 | 4933 | dVAR; |
ed6116ce LW |
4934 | if (o->op_type == OP_PADANY) { |
4935 | o->op_type = OP_PADSV; | |
22c35a8c | 4936 | o->op_ppaddr = PL_ppaddr[OP_PADSV]; |
93a17b20 | 4937 | return o; |
ed6116ce | 4938 | } |
224a4551 MB |
4939 | else if (o->op_type == OP_THREADSV && !(o->op_flags & OPpDONE_SVREF)) { |
4940 | o->op_flags |= OPpDONE_SVREF; | |
a863c7d1 | 4941 | return o; |
224a4551 | 4942 | } |
79072805 LW |
4943 | return newUNOP(OP_RV2SV, 0, scalar(o)); |
4944 | } | |
4945 | ||
61b743bb DM |
4946 | /* Check routines. See the comments at the top of this file for details |
4947 | * on when these are called */ | |
79072805 LW |
4948 | |
4949 | OP * | |
cea2e8a9 | 4950 | Perl_ck_anoncode(pTHX_ OP *o) |
5f05dabc | 4951 | { |
dd2155a4 | 4952 | cSVOPo->op_targ = pad_add_anon(cSVOPo->op_sv, o->op_type); |
5dc0d613 | 4953 | cSVOPo->op_sv = Nullsv; |
5dc0d613 | 4954 | return o; |
5f05dabc | 4955 | } |
4956 | ||
4957 | OP * | |
cea2e8a9 | 4958 | Perl_ck_bitop(pTHX_ OP *o) |
55497cff | 4959 | { |
276b2a0c RGS |
4960 | #define OP_IS_NUMCOMPARE(op) \ |
4961 | ((op) == OP_LT || (op) == OP_I_LT || \ | |
4962 | (op) == OP_GT || (op) == OP_I_GT || \ | |
4963 | (op) == OP_LE || (op) == OP_I_LE || \ | |
4964 | (op) == OP_GE || (op) == OP_I_GE || \ | |
4965 | (op) == OP_EQ || (op) == OP_I_EQ || \ | |
4966 | (op) == OP_NE || (op) == OP_I_NE || \ | |
4967 | (op) == OP_NCMP || (op) == OP_I_NCMP) | |
eb160463 | 4968 | o->op_private = (U8)(PL_hints & HINT_PRIVATE_MASK); |
2b84528b RGS |
4969 | if (!(o->op_flags & OPf_STACKED) /* Not an assignment */ |
4970 | && (o->op_type == OP_BIT_OR | |
4971 | || o->op_type == OP_BIT_AND | |
4972 | || o->op_type == OP_BIT_XOR)) | |
276b2a0c | 4973 | { |
1df70142 AL |
4974 | const OP * const left = cBINOPo->op_first; |
4975 | const OP * const right = left->op_sibling; | |
96a925ab YST |
4976 | if ((OP_IS_NUMCOMPARE(left->op_type) && |
4977 | (left->op_flags & OPf_PARENS) == 0) || | |
4978 | (OP_IS_NUMCOMPARE(right->op_type) && | |
4979 | (right->op_flags & OPf_PARENS) == 0)) | |
276b2a0c RGS |
4980 | if (ckWARN(WARN_PRECEDENCE)) |
4981 | Perl_warner(aTHX_ packWARN(WARN_PRECEDENCE), | |
4982 | "Possible precedence problem on bitwise %c operator", | |
4983 | o->op_type == OP_BIT_OR ? '|' | |
4984 | : o->op_type == OP_BIT_AND ? '&' : '^' | |
4985 | ); | |
4986 | } | |
5dc0d613 | 4987 | return o; |
55497cff | 4988 | } |
4989 | ||
4990 | OP * | |
cea2e8a9 | 4991 | Perl_ck_concat(pTHX_ OP *o) |
79072805 | 4992 | { |
6867be6d | 4993 | const OP *kid = cUNOPo->op_first; |
df91b2c5 AE |
4994 | if (kid->op_type == OP_CONCAT && !(kid->op_private & OPpTARGET_MY) && |
4995 | !(kUNOP->op_first->op_flags & OPf_MOD)) | |
0165acc7 | 4996 | o->op_flags |= OPf_STACKED; |
11343788 | 4997 | return o; |
79072805 LW |
4998 | } |
4999 | ||
5000 | OP * | |
cea2e8a9 | 5001 | Perl_ck_spair(pTHX_ OP *o) |
79072805 | 5002 | { |
27da23d5 | 5003 | dVAR; |
11343788 | 5004 | if (o->op_flags & OPf_KIDS) { |
79072805 | 5005 | OP* newop; |
a0d0e21e | 5006 | OP* kid; |
6867be6d | 5007 | const OPCODE type = o->op_type; |
5dc0d613 | 5008 | o = modkids(ck_fun(o), type); |
11343788 | 5009 | kid = cUNOPo->op_first; |
a0d0e21e LW |
5010 | newop = kUNOP->op_first->op_sibling; |
5011 | if (newop && | |
5012 | (newop->op_sibling || | |
22c35a8c | 5013 | !(PL_opargs[newop->op_type] & OA_RETSCALAR) || |
a0d0e21e LW |
5014 | newop->op_type == OP_PADAV || newop->op_type == OP_PADHV || |
5015 | newop->op_type == OP_RV2AV || newop->op_type == OP_RV2HV)) { | |
b2ffa427 | 5016 | |
11343788 | 5017 | return o; |
a0d0e21e LW |
5018 | } |
5019 | op_free(kUNOP->op_first); | |
5020 | kUNOP->op_first = newop; | |
5021 | } | |
22c35a8c | 5022 | o->op_ppaddr = PL_ppaddr[++o->op_type]; |
11343788 | 5023 | return ck_fun(o); |
a0d0e21e LW |
5024 | } |
5025 | ||
5026 | OP * | |
cea2e8a9 | 5027 | Perl_ck_delete(pTHX_ OP *o) |
a0d0e21e | 5028 | { |
11343788 | 5029 | o = ck_fun(o); |
5dc0d613 | 5030 | o->op_private = 0; |
11343788 | 5031 | if (o->op_flags & OPf_KIDS) { |
551405c4 | 5032 | OP * const kid = cUNOPo->op_first; |
01020589 GS |
5033 | switch (kid->op_type) { |
5034 | case OP_ASLICE: | |
5035 | o->op_flags |= OPf_SPECIAL; | |
5036 | /* FALL THROUGH */ | |
5037 | case OP_HSLICE: | |
5dc0d613 | 5038 | o->op_private |= OPpSLICE; |
01020589 GS |
5039 | break; |
5040 | case OP_AELEM: | |
5041 | o->op_flags |= OPf_SPECIAL; | |
5042 | /* FALL THROUGH */ | |
5043 | case OP_HELEM: | |
5044 | break; | |
5045 | default: | |
5046 | Perl_croak(aTHX_ "%s argument is not a HASH or ARRAY element or slice", | |
53e06cf0 | 5047 | OP_DESC(o)); |
01020589 | 5048 | } |
93c66552 | 5049 | op_null(kid); |
79072805 | 5050 | } |
11343788 | 5051 | return o; |
79072805 LW |
5052 | } |
5053 | ||
5054 | OP * | |
96e176bf CL |
5055 | Perl_ck_die(pTHX_ OP *o) |
5056 | { | |
5057 | #ifdef VMS | |
5058 | if (VMSISH_HUSHED) o->op_private |= OPpHUSH_VMSISH; | |
5059 | #endif | |
5060 | return ck_fun(o); | |
5061 | } | |
5062 | ||
5063 | OP * | |
cea2e8a9 | 5064 | Perl_ck_eof(pTHX_ OP *o) |
79072805 | 5065 | { |
6867be6d | 5066 | const I32 type = o->op_type; |
79072805 | 5067 | |
11343788 MB |
5068 | if (o->op_flags & OPf_KIDS) { |
5069 | if (cLISTOPo->op_first->op_type == OP_STUB) { | |
5070 | op_free(o); | |
8fde6460 | 5071 | o = newUNOP(type, OPf_SPECIAL, newGVOP(OP_GV, 0, PL_argvgv)); |
8990e307 | 5072 | } |
11343788 | 5073 | return ck_fun(o); |
79072805 | 5074 | } |
11343788 | 5075 | return o; |
79072805 LW |
5076 | } |
5077 | ||
5078 | OP * | |
cea2e8a9 | 5079 | Perl_ck_eval(pTHX_ OP *o) |
79072805 | 5080 | { |
27da23d5 | 5081 | dVAR; |
3280af22 | 5082 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 5083 | if (o->op_flags & OPf_KIDS) { |
46c461b5 | 5084 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
79072805 | 5085 | |
93a17b20 | 5086 | if (!kid) { |
11343788 | 5087 | o->op_flags &= ~OPf_KIDS; |
93c66552 | 5088 | op_null(o); |
79072805 | 5089 | } |
b14574b4 | 5090 | else if (kid->op_type == OP_LINESEQ || kid->op_type == OP_STUB) { |
79072805 LW |
5091 | LOGOP *enter; |
5092 | ||
11343788 MB |
5093 | cUNOPo->op_first = 0; |
5094 | op_free(o); | |
79072805 | 5095 | |
b7dc083c | 5096 | NewOp(1101, enter, 1, LOGOP); |
79072805 | 5097 | enter->op_type = OP_ENTERTRY; |
22c35a8c | 5098 | enter->op_ppaddr = PL_ppaddr[OP_ENTERTRY]; |
79072805 LW |
5099 | enter->op_private = 0; |
5100 | ||
5101 | /* establish postfix order */ | |
5102 | enter->op_next = (OP*)enter; | |
5103 | ||
11343788 MB |
5104 | o = prepend_elem(OP_LINESEQ, (OP*)enter, (OP*)kid); |
5105 | o->op_type = OP_LEAVETRY; | |
22c35a8c | 5106 | o->op_ppaddr = PL_ppaddr[OP_LEAVETRY]; |
11343788 MB |
5107 | enter->op_other = o; |
5108 | return o; | |
79072805 | 5109 | } |
b5c19bd7 | 5110 | else { |
473986ff | 5111 | scalar((OP*)kid); |
b5c19bd7 DM |
5112 | PL_cv_has_eval = 1; |
5113 | } | |
79072805 LW |
5114 | } |
5115 | else { | |
11343788 | 5116 | op_free(o); |
54b9620d | 5117 | o = newUNOP(OP_ENTEREVAL, 0, newDEFSVOP()); |
79072805 | 5118 | } |
3280af22 | 5119 | o->op_targ = (PADOFFSET)PL_hints; |
11343788 | 5120 | return o; |
79072805 LW |
5121 | } |
5122 | ||
5123 | OP * | |
d98f61e7 GS |
5124 | Perl_ck_exit(pTHX_ OP *o) |
5125 | { | |
5126 | #ifdef VMS | |
551405c4 | 5127 | HV * const table = GvHV(PL_hintgv); |
d98f61e7 | 5128 | if (table) { |
551405c4 | 5129 | SV * const * const svp = hv_fetch(table, "vmsish_exit", 11, FALSE); |
d98f61e7 GS |
5130 | if (svp && *svp && SvTRUE(*svp)) |
5131 | o->op_private |= OPpEXIT_VMSISH; | |
5132 | } | |
96e176bf | 5133 | if (VMSISH_HUSHED) o->op_private |= OPpHUSH_VMSISH; |
d98f61e7 GS |
5134 | #endif |
5135 | return ck_fun(o); | |
5136 | } | |
5137 | ||
5138 | OP * | |
cea2e8a9 | 5139 | Perl_ck_exec(pTHX_ OP *o) |
79072805 | 5140 | { |
11343788 | 5141 | if (o->op_flags & OPf_STACKED) { |
6867be6d | 5142 | OP *kid; |
11343788 MB |
5143 | o = ck_fun(o); |
5144 | kid = cUNOPo->op_first->op_sibling; | |
8990e307 | 5145 | if (kid->op_type == OP_RV2GV) |
93c66552 | 5146 | op_null(kid); |
79072805 | 5147 | } |
463ee0b2 | 5148 | else |
11343788 MB |
5149 | o = listkids(o); |
5150 | return o; | |
79072805 LW |
5151 | } |
5152 | ||
5153 | OP * | |
cea2e8a9 | 5154 | Perl_ck_exists(pTHX_ OP *o) |
5f05dabc | 5155 | { |
5196be3e MB |
5156 | o = ck_fun(o); |
5157 | if (o->op_flags & OPf_KIDS) { | |
46c461b5 | 5158 | OP * const kid = cUNOPo->op_first; |
afebc493 GS |
5159 | if (kid->op_type == OP_ENTERSUB) { |
5160 | (void) ref(kid, o->op_type); | |
5161 | if (kid->op_type != OP_RV2CV && !PL_error_count) | |
5162 | Perl_croak(aTHX_ "%s argument is not a subroutine name", | |
53e06cf0 | 5163 | OP_DESC(o)); |
afebc493 GS |
5164 | o->op_private |= OPpEXISTS_SUB; |
5165 | } | |
5166 | else if (kid->op_type == OP_AELEM) | |
01020589 GS |
5167 | o->op_flags |= OPf_SPECIAL; |
5168 | else if (kid->op_type != OP_HELEM) | |
5169 | Perl_croak(aTHX_ "%s argument is not a HASH or ARRAY element", | |
53e06cf0 | 5170 | OP_DESC(o)); |
93c66552 | 5171 | op_null(kid); |
5f05dabc | 5172 | } |
5196be3e | 5173 | return o; |
5f05dabc | 5174 | } |
5175 | ||
79072805 | 5176 | OP * |
cea2e8a9 | 5177 | Perl_ck_rvconst(pTHX_ register OP *o) |
79072805 | 5178 | { |
27da23d5 | 5179 | dVAR; |
11343788 | 5180 | SVOP *kid = (SVOP*)cUNOPo->op_first; |
85e6fe83 | 5181 | |
3280af22 | 5182 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
79072805 | 5183 | if (kid->op_type == OP_CONST) { |
44a8e56a | 5184 | int iscv; |
5185 | GV *gv; | |
504618e9 | 5186 | SV * const kidsv = kid->op_sv; |
44a8e56a | 5187 | |
779c5bc9 GS |
5188 | /* Is it a constant from cv_const_sv()? */ |
5189 | if (SvROK(kidsv) && SvREADONLY(kidsv)) { | |
5190 | SV *rsv = SvRV(kidsv); | |
504618e9 | 5191 | const int svtype = SvTYPE(rsv); |
e1ec3a88 | 5192 | const char *badtype = Nullch; |
779c5bc9 GS |
5193 | |
5194 | switch (o->op_type) { | |
5195 | case OP_RV2SV: | |
5196 | if (svtype > SVt_PVMG) | |
5197 | badtype = "a SCALAR"; | |
5198 | break; | |
5199 | case OP_RV2AV: | |
5200 | if (svtype != SVt_PVAV) | |
5201 | badtype = "an ARRAY"; | |
5202 | break; | |
5203 | case OP_RV2HV: | |
6d822dc4 | 5204 | if (svtype != SVt_PVHV) |
779c5bc9 | 5205 | badtype = "a HASH"; |
779c5bc9 GS |
5206 | break; |
5207 | case OP_RV2CV: | |
5208 | if (svtype != SVt_PVCV) | |
5209 | badtype = "a CODE"; | |
5210 | break; | |
5211 | } | |
5212 | if (badtype) | |
cea2e8a9 | 5213 | Perl_croak(aTHX_ "Constant is not %s reference", badtype); |
779c5bc9 GS |
5214 | return o; |
5215 | } | |
3280af22 | 5216 | if ((PL_hints & HINT_STRICT_REFS) && (kid->op_private & OPpCONST_BARE)) { |
e1ec3a88 | 5217 | const char *badthing = Nullch; |
5dc0d613 | 5218 | switch (o->op_type) { |
44a8e56a | 5219 | case OP_RV2SV: |
5220 | badthing = "a SCALAR"; | |
5221 | break; | |
5222 | case OP_RV2AV: | |
5223 | badthing = "an ARRAY"; | |
5224 | break; | |
5225 | case OP_RV2HV: | |
5226 | badthing = "a HASH"; | |
5227 | break; | |
5228 | } | |
5229 | if (badthing) | |
1c846c1f | 5230 | Perl_croak(aTHX_ |
7a5fd60d NC |
5231 | "Can't use bareword (\"%"SVf"\") as %s ref while \"strict refs\" in use", |
5232 | kidsv, badthing); | |
44a8e56a | 5233 | } |
93233ece CS |
5234 | /* |
5235 | * This is a little tricky. We only want to add the symbol if we | |
5236 | * didn't add it in the lexer. Otherwise we get duplicate strict | |
5237 | * warnings. But if we didn't add it in the lexer, we must at | |
5238 | * least pretend like we wanted to add it even if it existed before, | |
5239 | * or we get possible typo warnings. OPpCONST_ENTERED says | |
5240 | * whether the lexer already added THIS instance of this symbol. | |
5241 | */ | |
5196be3e | 5242 | iscv = (o->op_type == OP_RV2CV) * 2; |
93233ece | 5243 | do { |
7a5fd60d | 5244 | gv = gv_fetchsv(kidsv, |
748a9306 | 5245 | iscv | !(kid->op_private & OPpCONST_ENTERED), |
a0d0e21e LW |
5246 | iscv |
5247 | ? SVt_PVCV | |
11343788 | 5248 | : o->op_type == OP_RV2SV |
a0d0e21e | 5249 | ? SVt_PV |
11343788 | 5250 | : o->op_type == OP_RV2AV |
a0d0e21e | 5251 | ? SVt_PVAV |
11343788 | 5252 | : o->op_type == OP_RV2HV |
a0d0e21e LW |
5253 | ? SVt_PVHV |
5254 | : SVt_PVGV); | |
93233ece CS |
5255 | } while (!gv && !(kid->op_private & OPpCONST_ENTERED) && !iscv++); |
5256 | if (gv) { | |
5257 | kid->op_type = OP_GV; | |
5258 | SvREFCNT_dec(kid->op_sv); | |
350de78d | 5259 | #ifdef USE_ITHREADS |
638eceb6 | 5260 | /* XXX hack: dependence on sizeof(PADOP) <= sizeof(SVOP) */ |
350de78d | 5261 | kPADOP->op_padix = pad_alloc(OP_GV, SVs_PADTMP); |
dd2155a4 | 5262 | SvREFCNT_dec(PAD_SVl(kPADOP->op_padix)); |
743e66e6 | 5263 | GvIN_PAD_on(gv); |
dd2155a4 | 5264 | PAD_SETSV(kPADOP->op_padix, (SV*) SvREFCNT_inc(gv)); |
350de78d | 5265 | #else |
93233ece | 5266 | kid->op_sv = SvREFCNT_inc(gv); |
350de78d | 5267 | #endif |
23f1ca44 | 5268 | kid->op_private = 0; |
76cd736e | 5269 | kid->op_ppaddr = PL_ppaddr[OP_GV]; |
a0d0e21e | 5270 | } |
79072805 | 5271 | } |
11343788 | 5272 | return o; |
79072805 LW |
5273 | } |
5274 | ||
5275 | OP * | |
cea2e8a9 | 5276 | Perl_ck_ftst(pTHX_ OP *o) |
79072805 | 5277 | { |
27da23d5 | 5278 | dVAR; |
6867be6d | 5279 | const I32 type = o->op_type; |
79072805 | 5280 | |
d0dca557 JD |
5281 | if (o->op_flags & OPf_REF) { |
5282 | /* nothing */ | |
5283 | } | |
5284 | else if (o->op_flags & OPf_KIDS && cUNOPo->op_first->op_type != OP_STUB) { | |
551405c4 | 5285 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
79072805 LW |
5286 | |
5287 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
551405c4 | 5288 | OP * const newop = newGVOP(type, OPf_REF, |
7a5fd60d | 5289 | gv_fetchsv(kid->op_sv, TRUE, SVt_PVIO)); |
11343788 | 5290 | op_free(o); |
d0dca557 | 5291 | o = newop; |
181bc48d | 5292 | return o; |
79072805 | 5293 | } |
1af34c76 JH |
5294 | else { |
5295 | if ((PL_hints & HINT_FILETEST_ACCESS) && | |
5296 | OP_IS_FILETEST_ACCESS(o)) | |
5297 | o->op_private |= OPpFT_ACCESS; | |
5298 | } | |
fbb0b3b3 RGS |
5299 | if (PL_check[kid->op_type] == MEMBER_TO_FPTR(Perl_ck_ftst) |
5300 | && kid->op_type != OP_STAT && kid->op_type != OP_LSTAT) | |
5301 | o->op_private |= OPpFT_STACKED; | |
79072805 LW |
5302 | } |
5303 | else { | |
11343788 | 5304 | op_free(o); |
79072805 | 5305 | if (type == OP_FTTTY) |
8fde6460 | 5306 | o = newGVOP(type, OPf_REF, PL_stdingv); |
79072805 | 5307 | else |
d0dca557 | 5308 | o = newUNOP(type, 0, newDEFSVOP()); |
79072805 | 5309 | } |
11343788 | 5310 | return o; |
79072805 LW |
5311 | } |
5312 | ||
5313 | OP * | |
cea2e8a9 | 5314 | Perl_ck_fun(pTHX_ OP *o) |
79072805 | 5315 | { |
6867be6d | 5316 | const int type = o->op_type; |
22c35a8c | 5317 | register I32 oa = PL_opargs[type] >> OASHIFT; |
aeea060c | 5318 | |
11343788 | 5319 | if (o->op_flags & OPf_STACKED) { |
79072805 LW |
5320 | if ((oa & OA_OPTIONAL) && (oa >> 4) && !((oa >> 4) & OA_OPTIONAL)) |
5321 | oa &= ~OA_OPTIONAL; | |
5322 | else | |
11343788 | 5323 | return no_fh_allowed(o); |
79072805 LW |
5324 | } |
5325 | ||
11343788 | 5326 | if (o->op_flags & OPf_KIDS) { |
6867be6d AL |
5327 | OP **tokid = &cLISTOPo->op_first; |
5328 | register OP *kid = cLISTOPo->op_first; | |
5329 | OP *sibl; | |
5330 | I32 numargs = 0; | |
5331 | ||
8990e307 | 5332 | if (kid->op_type == OP_PUSHMARK || |
155aba94 | 5333 | (kid->op_type == OP_NULL && kid->op_targ == OP_PUSHMARK)) |
8990e307 | 5334 | { |
79072805 LW |
5335 | tokid = &kid->op_sibling; |
5336 | kid = kid->op_sibling; | |
5337 | } | |
22c35a8c | 5338 | if (!kid && PL_opargs[type] & OA_DEFGV) |
54b9620d | 5339 | *tokid = kid = newDEFSVOP(); |
79072805 LW |
5340 | |
5341 | while (oa && kid) { | |
5342 | numargs++; | |
5343 | sibl = kid->op_sibling; | |
5344 | switch (oa & 7) { | |
5345 | case OA_SCALAR: | |
62c18ce2 GS |
5346 | /* list seen where single (scalar) arg expected? */ |
5347 | if (numargs == 1 && !(oa >> 4) | |
5348 | && kid->op_type == OP_LIST && type != OP_SCALAR) | |
5349 | { | |
5350 | return too_many_arguments(o,PL_op_desc[type]); | |
5351 | } | |
79072805 LW |
5352 | scalar(kid); |
5353 | break; | |
5354 | case OA_LIST: | |
5355 | if (oa < 16) { | |
5356 | kid = 0; | |
5357 | continue; | |
5358 | } | |
5359 | else | |
5360 | list(kid); | |
5361 | break; | |
5362 | case OA_AVREF: | |
936edb8b | 5363 | if ((type == OP_PUSH || type == OP_UNSHIFT) |
f87c3213 | 5364 | && !kid->op_sibling && ckWARN(WARN_SYNTAX)) |
9014280d | 5365 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
de4864e4 | 5366 | "Useless use of %s with no values", |
936edb8b | 5367 | PL_op_desc[type]); |
b2ffa427 | 5368 | |
79072805 | 5369 | if (kid->op_type == OP_CONST && |
62c18ce2 GS |
5370 | (kid->op_private & OPpCONST_BARE)) |
5371 | { | |
551405c4 | 5372 | OP * const newop = newAVREF(newGVOP(OP_GV, 0, |
7a5fd60d | 5373 | gv_fetchsv(((SVOP*)kid)->op_sv, TRUE, SVt_PVAV) )); |
12bcd1a6 PM |
5374 | if (ckWARN2(WARN_DEPRECATED, WARN_SYNTAX)) |
5375 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), | |
7a5fd60d NC |
5376 | "Array @%"SVf" missing the @ in argument %"IVdf" of %s()", |
5377 | ((SVOP*)kid)->op_sv, (IV)numargs, PL_op_desc[type]); | |
79072805 LW |
5378 | op_free(kid); |
5379 | kid = newop; | |
5380 | kid->op_sibling = sibl; | |
5381 | *tokid = kid; | |
5382 | } | |
8990e307 | 5383 | else if (kid->op_type != OP_RV2AV && kid->op_type != OP_PADAV) |
35cd451c | 5384 | bad_type(numargs, "array", PL_op_desc[type], kid); |
a0d0e21e | 5385 | mod(kid, type); |
79072805 LW |
5386 | break; |
5387 | case OA_HVREF: | |
5388 | if (kid->op_type == OP_CONST && | |
62c18ce2 GS |
5389 | (kid->op_private & OPpCONST_BARE)) |
5390 | { | |
551405c4 | 5391 | OP * const newop = newHVREF(newGVOP(OP_GV, 0, |
7a5fd60d | 5392 | gv_fetchsv(((SVOP*)kid)->op_sv, TRUE, SVt_PVHV) )); |
12bcd1a6 PM |
5393 | if (ckWARN2(WARN_DEPRECATED, WARN_SYNTAX)) |
5394 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), | |
7a5fd60d NC |
5395 | "Hash %%%"SVf" missing the %% in argument %"IVdf" of %s()", |
5396 | ((SVOP*)kid)->op_sv, (IV)numargs, PL_op_desc[type]); | |
79072805 LW |
5397 | op_free(kid); |
5398 | kid = newop; | |
5399 | kid->op_sibling = sibl; | |
5400 | *tokid = kid; | |
5401 | } | |
8990e307 | 5402 | else if (kid->op_type != OP_RV2HV && kid->op_type != OP_PADHV) |
35cd451c | 5403 | bad_type(numargs, "hash", PL_op_desc[type], kid); |
a0d0e21e | 5404 | mod(kid, type); |
79072805 LW |
5405 | break; |
5406 | case OA_CVREF: | |
5407 | { | |
551405c4 | 5408 | OP * const newop = newUNOP(OP_NULL, 0, kid); |
79072805 LW |
5409 | kid->op_sibling = 0; |
5410 | linklist(kid); | |
5411 | newop->op_next = newop; | |
5412 | kid = newop; | |
5413 | kid->op_sibling = sibl; | |
5414 | *tokid = kid; | |
5415 | } | |
5416 | break; | |
5417 | case OA_FILEREF: | |
c340be78 | 5418 | if (kid->op_type != OP_GV && kid->op_type != OP_RV2GV) { |
79072805 | 5419 | if (kid->op_type == OP_CONST && |
62c18ce2 GS |
5420 | (kid->op_private & OPpCONST_BARE)) |
5421 | { | |
79072805 | 5422 | OP *newop = newGVOP(OP_GV, 0, |
7a5fd60d | 5423 | gv_fetchsv(((SVOP*)kid)->op_sv, TRUE, SVt_PVIO) ); |
afbdacea | 5424 | if (!(o->op_private & 1) && /* if not unop */ |
8a996ce8 | 5425 | kid == cLISTOPo->op_last) |
364daeac | 5426 | cLISTOPo->op_last = newop; |
79072805 LW |
5427 | op_free(kid); |
5428 | kid = newop; | |
5429 | } | |
1ea32a52 GS |
5430 | else if (kid->op_type == OP_READLINE) { |
5431 | /* neophyte patrol: open(<FH>), close(<FH>) etc. */ | |
53e06cf0 | 5432 | bad_type(numargs, "HANDLE", OP_DESC(o), kid); |
1ea32a52 | 5433 | } |
79072805 | 5434 | else { |
35cd451c | 5435 | I32 flags = OPf_SPECIAL; |
a6c40364 | 5436 | I32 priv = 0; |
2c8ac474 GS |
5437 | PADOFFSET targ = 0; |
5438 | ||
35cd451c | 5439 | /* is this op a FH constructor? */ |
853846ea | 5440 | if (is_handle_constructor(o,numargs)) { |
e1ec3a88 | 5441 | const char *name = Nullch; |
dd2155a4 | 5442 | STRLEN len = 0; |
2c8ac474 GS |
5443 | |
5444 | flags = 0; | |
5445 | /* Set a flag to tell rv2gv to vivify | |
853846ea NIS |
5446 | * need to "prove" flag does not mean something |
5447 | * else already - NI-S 1999/05/07 | |
2c8ac474 GS |
5448 | */ |
5449 | priv = OPpDEREF; | |
5450 | if (kid->op_type == OP_PADSV) { | |
dd2155a4 DM |
5451 | name = PAD_COMPNAME_PV(kid->op_targ); |
5452 | /* SvCUR of a pad namesv can't be trusted | |
5453 | * (see PL_generation), so calc its length | |
5454 | * manually */ | |
5455 | if (name) | |
5456 | len = strlen(name); | |
5457 | ||
2c8ac474 GS |
5458 | } |
5459 | else if (kid->op_type == OP_RV2SV | |
5460 | && kUNOP->op_first->op_type == OP_GV) | |
5461 | { | |
5462 | GV *gv = cGVOPx_gv(kUNOP->op_first); | |
5463 | name = GvNAME(gv); | |
5464 | len = GvNAMELEN(gv); | |
5465 | } | |
afd1915d GS |
5466 | else if (kid->op_type == OP_AELEM |
5467 | || kid->op_type == OP_HELEM) | |
5468 | { | |
551405c4 | 5469 | OP *op = ((BINOP*)kid)->op_first; |
0c4b0a3f | 5470 | name = 0; |
551405c4 | 5471 | if (op) { |
0c4b0a3f | 5472 | SV *tmpstr = Nullsv; |
551405c4 | 5473 | const char * const a = |
0c4b0a3f JH |
5474 | kid->op_type == OP_AELEM ? |
5475 | "[]" : "{}"; | |
5476 | if (((op->op_type == OP_RV2AV) || | |
5477 | (op->op_type == OP_RV2HV)) && | |
5478 | (op = ((UNOP*)op)->op_first) && | |
5479 | (op->op_type == OP_GV)) { | |
5480 | /* packagevar $a[] or $h{} */ | |
551405c4 | 5481 | GV * const gv = cGVOPx_gv(op); |
0c4b0a3f JH |
5482 | if (gv) |
5483 | tmpstr = | |
5484 | Perl_newSVpvf(aTHX_ | |
5485 | "%s%c...%c", | |
5486 | GvNAME(gv), | |
5487 | a[0], a[1]); | |
5488 | } | |
5489 | else if (op->op_type == OP_PADAV | |
5490 | || op->op_type == OP_PADHV) { | |
5491 | /* lexicalvar $a[] or $h{} */ | |
551405c4 | 5492 | const char * const padname = |
0c4b0a3f JH |
5493 | PAD_COMPNAME_PV(op->op_targ); |
5494 | if (padname) | |
5495 | tmpstr = | |
5496 | Perl_newSVpvf(aTHX_ | |
5497 | "%s%c...%c", | |
5498 | padname + 1, | |
5499 | a[0], a[1]); | |
0c4b0a3f JH |
5500 | } |
5501 | if (tmpstr) { | |
93524f2b | 5502 | name = SvPV_const(tmpstr, len); |
0c4b0a3f JH |
5503 | sv_2mortal(tmpstr); |
5504 | } | |
5505 | } | |
5506 | if (!name) { | |
5507 | name = "__ANONIO__"; | |
5508 | len = 10; | |
5509 | } | |
5510 | mod(kid, type); | |
afd1915d | 5511 | } |
2c8ac474 GS |
5512 | if (name) { |
5513 | SV *namesv; | |
5514 | targ = pad_alloc(OP_RV2GV, SVs_PADTMP); | |
dd2155a4 | 5515 | namesv = PAD_SVl(targ); |
862a34c6 | 5516 | SvUPGRADE(namesv, SVt_PV); |
2c8ac474 GS |
5517 | if (*name != '$') |
5518 | sv_setpvn(namesv, "$", 1); | |
5519 | sv_catpvn(namesv, name, len); | |
5520 | } | |
853846ea | 5521 | } |
79072805 | 5522 | kid->op_sibling = 0; |
35cd451c | 5523 | kid = newUNOP(OP_RV2GV, flags, scalar(kid)); |
2c8ac474 GS |
5524 | kid->op_targ = targ; |
5525 | kid->op_private |= priv; | |
79072805 LW |
5526 | } |
5527 | kid->op_sibling = sibl; | |
5528 | *tokid = kid; | |
5529 | } | |
5530 | scalar(kid); | |
5531 | break; | |
5532 | case OA_SCALARREF: | |
a0d0e21e | 5533 | mod(scalar(kid), type); |
79072805 LW |
5534 | break; |
5535 | } | |
5536 | oa >>= 4; | |
5537 | tokid = &kid->op_sibling; | |
5538 | kid = kid->op_sibling; | |
5539 | } | |
11343788 | 5540 | o->op_private |= numargs; |
79072805 | 5541 | if (kid) |
53e06cf0 | 5542 | return too_many_arguments(o,OP_DESC(o)); |
11343788 | 5543 | listkids(o); |
79072805 | 5544 | } |
22c35a8c | 5545 | else if (PL_opargs[type] & OA_DEFGV) { |
11343788 | 5546 | op_free(o); |
54b9620d | 5547 | return newUNOP(type, 0, newDEFSVOP()); |
a0d0e21e LW |
5548 | } |
5549 | ||
79072805 LW |
5550 | if (oa) { |
5551 | while (oa & OA_OPTIONAL) | |
5552 | oa >>= 4; | |
5553 | if (oa && oa != OA_LIST) | |
53e06cf0 | 5554 | return too_few_arguments(o,OP_DESC(o)); |
79072805 | 5555 | } |
11343788 | 5556 | return o; |
79072805 LW |
5557 | } |
5558 | ||
5559 | OP * | |
cea2e8a9 | 5560 | Perl_ck_glob(pTHX_ OP *o) |
79072805 | 5561 | { |
27da23d5 | 5562 | dVAR; |
fb73857a | 5563 | GV *gv; |
5564 | ||
649da076 | 5565 | o = ck_fun(o); |
1f2bfc8a | 5566 | if ((o->op_flags & OPf_KIDS) && !cLISTOPo->op_first->op_sibling) |
54b9620d | 5567 | append_elem(OP_GLOB, o, newDEFSVOP()); |
fb73857a | 5568 | |
b9f751c0 GS |
5569 | if (!((gv = gv_fetchpv("glob", FALSE, SVt_PVCV)) |
5570 | && GvCVu(gv) && GvIMPORTED_CV(gv))) | |
5571 | { | |
fb73857a | 5572 | gv = gv_fetchpv("CORE::GLOBAL::glob", FALSE, SVt_PVCV); |
b9f751c0 | 5573 | } |
b1cb66bf | 5574 | |
52bb0670 | 5575 | #if !defined(PERL_EXTERNAL_GLOB) |
72b16652 | 5576 | /* XXX this can be tightened up and made more failsafe. */ |
f444d496 | 5577 | if (!(gv && GvCVu(gv) && GvIMPORTED_CV(gv))) { |
7d3fb230 | 5578 | GV *glob_gv; |
72b16652 | 5579 | ENTER; |
00ca71c1 NIS |
5580 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, |
5581 | newSVpvn("File::Glob", 10), Nullsv, Nullsv, Nullsv); | |
72b16652 | 5582 | gv = gv_fetchpv("CORE::GLOBAL::glob", FALSE, SVt_PVCV); |
7d3fb230 BS |
5583 | glob_gv = gv_fetchpv("File::Glob::csh_glob", FALSE, SVt_PVCV); |
5584 | GvCV(gv) = GvCV(glob_gv); | |
7fc63493 | 5585 | (void)SvREFCNT_inc((SV*)GvCV(gv)); |
7d3fb230 | 5586 | GvIMPORTED_CV_on(gv); |
72b16652 GS |
5587 | LEAVE; |
5588 | } | |
52bb0670 | 5589 | #endif /* PERL_EXTERNAL_GLOB */ |
72b16652 | 5590 | |
b9f751c0 | 5591 | if (gv && GvCVu(gv) && GvIMPORTED_CV(gv)) { |
5196be3e | 5592 | append_elem(OP_GLOB, o, |
80252599 | 5593 | newSVOP(OP_CONST, 0, newSViv(PL_glob_index++))); |
1f2bfc8a | 5594 | o->op_type = OP_LIST; |
22c35a8c | 5595 | o->op_ppaddr = PL_ppaddr[OP_LIST]; |
1f2bfc8a | 5596 | cLISTOPo->op_first->op_type = OP_PUSHMARK; |
22c35a8c | 5597 | cLISTOPo->op_first->op_ppaddr = PL_ppaddr[OP_PUSHMARK]; |
ad33f57d | 5598 | cLISTOPo->op_first->op_targ = 0; |
1f2bfc8a | 5599 | o = newUNOP(OP_ENTERSUB, OPf_STACKED, |
aeea060c | 5600 | append_elem(OP_LIST, o, |
1f2bfc8a MB |
5601 | scalar(newUNOP(OP_RV2CV, 0, |
5602 | newGVOP(OP_GV, 0, gv))))); | |
d58bf5aa MB |
5603 | o = newUNOP(OP_NULL, 0, ck_subr(o)); |
5604 | o->op_targ = OP_GLOB; /* hint at what it used to be */ | |
5605 | return o; | |
b1cb66bf | 5606 | } |
5607 | gv = newGVgen("main"); | |
a0d0e21e | 5608 | gv_IOadd(gv); |
11343788 MB |
5609 | append_elem(OP_GLOB, o, newGVOP(OP_GV, 0, gv)); |
5610 | scalarkids(o); | |
649da076 | 5611 | return o; |
79072805 LW |
5612 | } |
5613 | ||
5614 | OP * | |
cea2e8a9 | 5615 | Perl_ck_grep(pTHX_ OP *o) |
79072805 | 5616 | { |
27da23d5 | 5617 | dVAR; |
79072805 LW |
5618 | LOGOP *gwop; |
5619 | OP *kid; | |
6867be6d | 5620 | const OPCODE type = o->op_type == OP_GREPSTART ? OP_GREPWHILE : OP_MAPWHILE; |
59f00321 | 5621 | I32 offset; |
79072805 | 5622 | |
22c35a8c | 5623 | o->op_ppaddr = PL_ppaddr[OP_GREPSTART]; |
b7dc083c | 5624 | NewOp(1101, gwop, 1, LOGOP); |
aeea060c | 5625 | |
11343788 | 5626 | if (o->op_flags & OPf_STACKED) { |
a0d0e21e | 5627 | OP* k; |
11343788 MB |
5628 | o = ck_sort(o); |
5629 | kid = cLISTOPo->op_first->op_sibling; | |
d09ad856 BS |
5630 | if (!cUNOPx(kid)->op_next) |
5631 | Perl_croak(aTHX_ "panic: ck_grep"); | |
e3c9a8b9 | 5632 | for (k = cUNOPx(kid)->op_first; k; k = k->op_next) { |
a0d0e21e LW |
5633 | kid = k; |
5634 | } | |
5635 | kid->op_next = (OP*)gwop; | |
11343788 | 5636 | o->op_flags &= ~OPf_STACKED; |
93a17b20 | 5637 | } |
11343788 | 5638 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e LW |
5639 | if (type == OP_MAPWHILE) |
5640 | list(kid); | |
5641 | else | |
5642 | scalar(kid); | |
11343788 | 5643 | o = ck_fun(o); |
3280af22 | 5644 | if (PL_error_count) |
11343788 | 5645 | return o; |
aeea060c | 5646 | kid = cLISTOPo->op_first->op_sibling; |
79072805 | 5647 | if (kid->op_type != OP_NULL) |
cea2e8a9 | 5648 | Perl_croak(aTHX_ "panic: ck_grep"); |
79072805 LW |
5649 | kid = kUNOP->op_first; |
5650 | ||
a0d0e21e | 5651 | gwop->op_type = type; |
22c35a8c | 5652 | gwop->op_ppaddr = PL_ppaddr[type]; |
11343788 | 5653 | gwop->op_first = listkids(o); |
79072805 | 5654 | gwop->op_flags |= OPf_KIDS; |
79072805 | 5655 | gwop->op_other = LINKLIST(kid); |
79072805 | 5656 | kid->op_next = (OP*)gwop; |
59f00321 RGS |
5657 | offset = pad_findmy("$_"); |
5658 | if (offset == NOT_IN_PAD || PAD_COMPNAME_FLAGS(offset) & SVpad_OUR) { | |
5659 | o->op_private = gwop->op_private = 0; | |
5660 | gwop->op_targ = pad_alloc(type, SVs_PADTMP); | |
5661 | } | |
5662 | else { | |
5663 | o->op_private = gwop->op_private = OPpGREP_LEX; | |
5664 | gwop->op_targ = o->op_targ = offset; | |
5665 | } | |
79072805 | 5666 | |
11343788 | 5667 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e | 5668 | if (!kid || !kid->op_sibling) |
53e06cf0 | 5669 | return too_few_arguments(o,OP_DESC(o)); |
a0d0e21e LW |
5670 | for (kid = kid->op_sibling; kid; kid = kid->op_sibling) |
5671 | mod(kid, OP_GREPSTART); | |
5672 | ||
79072805 LW |
5673 | return (OP*)gwop; |
5674 | } | |
5675 | ||
5676 | OP * | |
cea2e8a9 | 5677 | Perl_ck_index(pTHX_ OP *o) |
79072805 | 5678 | { |
11343788 MB |
5679 | if (o->op_flags & OPf_KIDS) { |
5680 | OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
0b71040e LW |
5681 | if (kid) |
5682 | kid = kid->op_sibling; /* get past "big" */ | |
79072805 | 5683 | if (kid && kid->op_type == OP_CONST) |
2779dcf1 | 5684 | fbm_compile(((SVOP*)kid)->op_sv, 0); |
79072805 | 5685 | } |
11343788 | 5686 | return ck_fun(o); |
79072805 LW |
5687 | } |
5688 | ||
5689 | OP * | |
cea2e8a9 | 5690 | Perl_ck_lengthconst(pTHX_ OP *o) |
79072805 LW |
5691 | { |
5692 | /* XXX length optimization goes here */ | |
11343788 | 5693 | return ck_fun(o); |
79072805 LW |
5694 | } |
5695 | ||
5696 | OP * | |
cea2e8a9 | 5697 | Perl_ck_lfun(pTHX_ OP *o) |
79072805 | 5698 | { |
6867be6d | 5699 | const OPCODE type = o->op_type; |
5dc0d613 | 5700 | return modkids(ck_fun(o), type); |
79072805 LW |
5701 | } |
5702 | ||
5703 | OP * | |
cea2e8a9 | 5704 | Perl_ck_defined(pTHX_ OP *o) /* 19990527 MJD */ |
69794302 | 5705 | { |
12bcd1a6 | 5706 | if ((o->op_flags & OPf_KIDS) && ckWARN2(WARN_DEPRECATED, WARN_SYNTAX)) { |
d0334bed GS |
5707 | switch (cUNOPo->op_first->op_type) { |
5708 | case OP_RV2AV: | |
a8739d98 JH |
5709 | /* This is needed for |
5710 | if (defined %stash::) | |
5711 | to work. Do not break Tk. | |
5712 | */ | |
1c846c1f | 5713 | break; /* Globals via GV can be undef */ |
d0334bed GS |
5714 | case OP_PADAV: |
5715 | case OP_AASSIGN: /* Is this a good idea? */ | |
12bcd1a6 | 5716 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
f10b0346 | 5717 | "defined(@array) is deprecated"); |
12bcd1a6 | 5718 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
cc507455 | 5719 | "\t(Maybe you should just omit the defined()?)\n"); |
69794302 | 5720 | break; |
d0334bed | 5721 | case OP_RV2HV: |
a8739d98 JH |
5722 | /* This is needed for |
5723 | if (defined %stash::) | |
5724 | to work. Do not break Tk. | |
5725 | */ | |
1c846c1f | 5726 | break; /* Globals via GV can be undef */ |
d0334bed | 5727 | case OP_PADHV: |
12bcd1a6 | 5728 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
894356b3 | 5729 | "defined(%%hash) is deprecated"); |
12bcd1a6 | 5730 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
cc507455 | 5731 | "\t(Maybe you should just omit the defined()?)\n"); |
d0334bed GS |
5732 | break; |
5733 | default: | |
5734 | /* no warning */ | |
5735 | break; | |
5736 | } | |
69794302 MJD |
5737 | } |
5738 | return ck_rfun(o); | |
5739 | } | |
5740 | ||
5741 | OP * | |
cea2e8a9 | 5742 | Perl_ck_rfun(pTHX_ OP *o) |
8990e307 | 5743 | { |
6867be6d | 5744 | const OPCODE type = o->op_type; |
5dc0d613 | 5745 | return refkids(ck_fun(o), type); |
8990e307 LW |
5746 | } |
5747 | ||
5748 | OP * | |
cea2e8a9 | 5749 | Perl_ck_listiob(pTHX_ OP *o) |
79072805 LW |
5750 | { |
5751 | register OP *kid; | |
aeea060c | 5752 | |
11343788 | 5753 | kid = cLISTOPo->op_first; |
79072805 | 5754 | if (!kid) { |
11343788 MB |
5755 | o = force_list(o); |
5756 | kid = cLISTOPo->op_first; | |
79072805 LW |
5757 | } |
5758 | if (kid->op_type == OP_PUSHMARK) | |
5759 | kid = kid->op_sibling; | |
11343788 | 5760 | if (kid && o->op_flags & OPf_STACKED) |
79072805 LW |
5761 | kid = kid->op_sibling; |
5762 | else if (kid && !kid->op_sibling) { /* print HANDLE; */ | |
5763 | if (kid->op_type == OP_CONST && kid->op_private & OPpCONST_BARE) { | |
11343788 | 5764 | o->op_flags |= OPf_STACKED; /* make it a filehandle */ |
748a9306 | 5765 | kid = newUNOP(OP_RV2GV, OPf_REF, scalar(kid)); |
11343788 MB |
5766 | cLISTOPo->op_first->op_sibling = kid; |
5767 | cLISTOPo->op_last = kid; | |
79072805 LW |
5768 | kid = kid->op_sibling; |
5769 | } | |
5770 | } | |
b2ffa427 | 5771 | |
79072805 | 5772 | if (!kid) |
54b9620d | 5773 | append_elem(o->op_type, o, newDEFSVOP()); |
79072805 | 5774 | |
2de3dbcc | 5775 | return listkids(o); |
bbce6d69 | 5776 | } |
5777 | ||
5778 | OP * | |
b162f9ea IZ |
5779 | Perl_ck_sassign(pTHX_ OP *o) |
5780 | { | |
5781 | OP *kid = cLISTOPo->op_first; | |
5782 | /* has a disposable target? */ | |
5783 | if ((PL_opargs[kid->op_type] & OA_TARGLEX) | |
6b66af17 GS |
5784 | && !(kid->op_flags & OPf_STACKED) |
5785 | /* Cannot steal the second time! */ | |
5786 | && !(kid->op_private & OPpTARGET_MY)) | |
b162f9ea | 5787 | { |
551405c4 | 5788 | OP * const kkid = kid->op_sibling; |
b162f9ea IZ |
5789 | |
5790 | /* Can just relocate the target. */ | |
2c2d71f5 JH |
5791 | if (kkid && kkid->op_type == OP_PADSV |
5792 | && !(kkid->op_private & OPpLVAL_INTRO)) | |
5793 | { | |
b162f9ea | 5794 | kid->op_targ = kkid->op_targ; |
743e66e6 | 5795 | kkid->op_targ = 0; |
b162f9ea IZ |
5796 | /* Now we do not need PADSV and SASSIGN. */ |
5797 | kid->op_sibling = o->op_sibling; /* NULL */ | |
5798 | cLISTOPo->op_first = NULL; | |
5799 | op_free(o); | |
5800 | op_free(kkid); | |
5801 | kid->op_private |= OPpTARGET_MY; /* Used for context settings */ | |
5802 | return kid; | |
5803 | } | |
5804 | } | |
b9d46b39 RGS |
5805 | /* optimise C<my $x = undef> to C<my $x> */ |
5806 | if (kid->op_type == OP_UNDEF) { | |
551405c4 | 5807 | OP * const kkid = kid->op_sibling; |
b9d46b39 RGS |
5808 | if (kkid && kkid->op_type == OP_PADSV |
5809 | && (kkid->op_private & OPpLVAL_INTRO)) | |
5810 | { | |
5811 | cLISTOPo->op_first = NULL; | |
5812 | kid->op_sibling = NULL; | |
5813 | op_free(o); | |
5814 | op_free(kid); | |
5815 | return kkid; | |
5816 | } | |
5817 | } | |
b162f9ea IZ |
5818 | return o; |
5819 | } | |
5820 | ||
5821 | OP * | |
cea2e8a9 | 5822 | Perl_ck_match(pTHX_ OP *o) |
79072805 | 5823 | { |
59f00321 | 5824 | if (o->op_type != OP_QR) { |
6867be6d | 5825 | const I32 offset = pad_findmy("$_"); |
59f00321 RGS |
5826 | if (offset != NOT_IN_PAD && !(PAD_COMPNAME_FLAGS(offset) & SVpad_OUR)) { |
5827 | o->op_targ = offset; | |
5828 | o->op_private |= OPpTARGET_MY; | |
5829 | } | |
5830 | } | |
5831 | if (o->op_type == OP_MATCH || o->op_type == OP_QR) | |
5832 | o->op_private |= OPpRUNTIME; | |
11343788 | 5833 | return o; |
79072805 LW |
5834 | } |
5835 | ||
5836 | OP * | |
f5d5a27c CS |
5837 | Perl_ck_method(pTHX_ OP *o) |
5838 | { | |
551405c4 | 5839 | OP * const kid = cUNOPo->op_first; |
f5d5a27c CS |
5840 | if (kid->op_type == OP_CONST) { |
5841 | SV* sv = kSVOP->op_sv; | |
b15aece3 | 5842 | if (!(strchr(SvPVX_const(sv), ':') || strchr(SvPVX_const(sv), '\''))) { |
f5d5a27c | 5843 | OP *cmop; |
1c846c1f | 5844 | if (!SvREADONLY(sv) || !SvFAKE(sv)) { |
b15aece3 | 5845 | sv = newSVpvn_share(SvPVX_const(sv), SvCUR(sv), 0); |
1c846c1f NIS |
5846 | } |
5847 | else { | |
5848 | kSVOP->op_sv = Nullsv; | |
5849 | } | |
f5d5a27c | 5850 | cmop = newSVOP(OP_METHOD_NAMED, 0, sv); |
f5d5a27c CS |
5851 | op_free(o); |
5852 | return cmop; | |
5853 | } | |
5854 | } | |
5855 | return o; | |
5856 | } | |
5857 | ||
5858 | OP * | |
cea2e8a9 | 5859 | Perl_ck_null(pTHX_ OP *o) |
79072805 | 5860 | { |
11343788 | 5861 | return o; |
79072805 LW |
5862 | } |
5863 | ||
5864 | OP * | |
16fe6d59 GS |
5865 | Perl_ck_open(pTHX_ OP *o) |
5866 | { | |
551405c4 | 5867 | HV * const table = GvHV(PL_hintgv); |
16fe6d59 | 5868 | if (table) { |
551405c4 | 5869 | SV **svp = hv_fetch(table, "open_IN", 7, FALSE); |
16fe6d59 | 5870 | if (svp && *svp) { |
551405c4 | 5871 | const I32 mode = mode_from_discipline(*svp); |
16fe6d59 GS |
5872 | if (mode & O_BINARY) |
5873 | o->op_private |= OPpOPEN_IN_RAW; | |
5874 | else if (mode & O_TEXT) | |
5875 | o->op_private |= OPpOPEN_IN_CRLF; | |
5876 | } | |
5877 | ||
5878 | svp = hv_fetch(table, "open_OUT", 8, FALSE); | |
5879 | if (svp && *svp) { | |
551405c4 | 5880 | const I32 mode = mode_from_discipline(*svp); |
16fe6d59 GS |
5881 | if (mode & O_BINARY) |
5882 | o->op_private |= OPpOPEN_OUT_RAW; | |
5883 | else if (mode & O_TEXT) | |
5884 | o->op_private |= OPpOPEN_OUT_CRLF; | |
5885 | } | |
5886 | } | |
5887 | if (o->op_type == OP_BACKTICK) | |
5888 | return o; | |
3b82e551 JH |
5889 | { |
5890 | /* In case of three-arg dup open remove strictness | |
5891 | * from the last arg if it is a bareword. */ | |
551405c4 AL |
5892 | OP * const first = cLISTOPx(o)->op_first; /* The pushmark. */ |
5893 | OP * const last = cLISTOPx(o)->op_last; /* The bareword. */ | |
3b82e551 | 5894 | OP *oa; |
b15aece3 | 5895 | const char *mode; |
3b82e551 JH |
5896 | |
5897 | if ((last->op_type == OP_CONST) && /* The bareword. */ | |
5898 | (last->op_private & OPpCONST_BARE) && | |
5899 | (last->op_private & OPpCONST_STRICT) && | |
5900 | (oa = first->op_sibling) && /* The fh. */ | |
5901 | (oa = oa->op_sibling) && /* The mode. */ | |
ea1d064a | 5902 | (oa->op_type == OP_CONST) && |
3b82e551 | 5903 | SvPOK(((SVOP*)oa)->op_sv) && |
b15aece3 | 5904 | (mode = SvPVX_const(((SVOP*)oa)->op_sv)) && |
3b82e551 JH |
5905 | mode[0] == '>' && mode[1] == '&' && /* A dup open. */ |
5906 | (last == oa->op_sibling)) /* The bareword. */ | |
5907 | last->op_private &= ~OPpCONST_STRICT; | |
5908 | } | |
16fe6d59 GS |
5909 | return ck_fun(o); |
5910 | } | |
5911 | ||
5912 | OP * | |
cea2e8a9 | 5913 | Perl_ck_repeat(pTHX_ OP *o) |
79072805 | 5914 | { |
11343788 MB |
5915 | if (cBINOPo->op_first->op_flags & OPf_PARENS) { |
5916 | o->op_private |= OPpREPEAT_DOLIST; | |
5917 | cBINOPo->op_first = force_list(cBINOPo->op_first); | |
79072805 LW |
5918 | } |
5919 | else | |
11343788 MB |
5920 | scalar(o); |
5921 | return o; | |
79072805 LW |
5922 | } |
5923 | ||
5924 | OP * | |
cea2e8a9 | 5925 | Perl_ck_require(pTHX_ OP *o) |
8990e307 | 5926 | { |
a72a1c8b | 5927 | GV* gv = Nullgv; |
ec4ab249 | 5928 | |
11343788 | 5929 | if (o->op_flags & OPf_KIDS) { /* Shall we supply missing .pm? */ |
551405c4 | 5930 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
8990e307 LW |
5931 | |
5932 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
551405c4 | 5933 | SV * const sv = kid->op_sv; |
5c144d81 | 5934 | U32 was_readonly = SvREADONLY(sv); |
8990e307 | 5935 | char *s; |
5c144d81 NC |
5936 | |
5937 | if (was_readonly) { | |
5938 | if (SvFAKE(sv)) { | |
5939 | sv_force_normal_flags(sv, 0); | |
5940 | assert(!SvREADONLY(sv)); | |
5941 | was_readonly = 0; | |
5942 | } else { | |
5943 | SvREADONLY_off(sv); | |
5944 | } | |
5945 | } | |
5946 | ||
5947 | for (s = SvPVX(sv); *s; s++) { | |
a0d0e21e | 5948 | if (*s == ':' && s[1] == ':') { |
42d9b98d | 5949 | const STRLEN len = strlen(s+2)+1; |
a0d0e21e | 5950 | *s = '/'; |
42d9b98d | 5951 | Move(s+2, s+1, len, char); |
5c144d81 | 5952 | SvCUR_set(sv, SvCUR(sv) - 1); |
a0d0e21e | 5953 | } |
8990e307 | 5954 | } |
5c144d81 NC |
5955 | sv_catpvn(sv, ".pm", 3); |
5956 | SvFLAGS(sv) |= was_readonly; | |
8990e307 LW |
5957 | } |
5958 | } | |
ec4ab249 | 5959 | |
a72a1c8b RGS |
5960 | if (!(o->op_flags & OPf_SPECIAL)) { /* Wasn't written as CORE::require */ |
5961 | /* handle override, if any */ | |
5962 | gv = gv_fetchpv("require", FALSE, SVt_PVCV); | |
d6a985f2 | 5963 | if (!(gv && GvCVu(gv) && GvIMPORTED_CV(gv))) { |
551405c4 AL |
5964 | GV * const * const gvp = (GV**)hv_fetch(PL_globalstash, "require", 7, FALSE); |
5965 | gv = gvp ? *gvp : Nullgv; | |
d6a985f2 | 5966 | } |
a72a1c8b | 5967 | } |
ec4ab249 | 5968 | |
b9f751c0 | 5969 | if (gv && GvCVu(gv) && GvIMPORTED_CV(gv)) { |
551405c4 | 5970 | OP * const kid = cUNOPo->op_first; |
ec4ab249 GA |
5971 | cUNOPo->op_first = 0; |
5972 | op_free(o); | |
5973 | return ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, | |
5974 | append_elem(OP_LIST, kid, | |
5975 | scalar(newUNOP(OP_RV2CV, 0, | |
5976 | newGVOP(OP_GV, 0, | |
5977 | gv)))))); | |
5978 | } | |
5979 | ||
11343788 | 5980 | return ck_fun(o); |
8990e307 LW |
5981 | } |
5982 | ||
78f9721b SM |
5983 | OP * |
5984 | Perl_ck_return(pTHX_ OP *o) | |
5985 | { | |
78f9721b | 5986 | if (CvLVALUE(PL_compcv)) { |
6867be6d | 5987 | OP *kid; |
78f9721b SM |
5988 | for (kid = cLISTOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
5989 | mod(kid, OP_LEAVESUBLV); | |
5990 | } | |
5991 | return o; | |
5992 | } | |
5993 | ||
79072805 | 5994 | OP * |
cea2e8a9 | 5995 | Perl_ck_select(pTHX_ OP *o) |
79072805 | 5996 | { |
27da23d5 | 5997 | dVAR; |
c07a80fd | 5998 | OP* kid; |
11343788 MB |
5999 | if (o->op_flags & OPf_KIDS) { |
6000 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
2304df62 | 6001 | if (kid && kid->op_sibling) { |
11343788 | 6002 | o->op_type = OP_SSELECT; |
22c35a8c | 6003 | o->op_ppaddr = PL_ppaddr[OP_SSELECT]; |
11343788 MB |
6004 | o = ck_fun(o); |
6005 | return fold_constants(o); | |
79072805 LW |
6006 | } |
6007 | } | |
11343788 MB |
6008 | o = ck_fun(o); |
6009 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
c07a80fd | 6010 | if (kid && kid->op_type == OP_RV2GV) |
6011 | kid->op_private &= ~HINT_STRICT_REFS; | |
11343788 | 6012 | return o; |
79072805 LW |
6013 | } |
6014 | ||
6015 | OP * | |
cea2e8a9 | 6016 | Perl_ck_shift(pTHX_ OP *o) |
79072805 | 6017 | { |
6867be6d | 6018 | const I32 type = o->op_type; |
79072805 | 6019 | |
11343788 | 6020 | if (!(o->op_flags & OPf_KIDS)) { |
6d4ff0d2 | 6021 | OP *argop; |
b2ffa427 | 6022 | |
11343788 | 6023 | op_free(o); |
6d4ff0d2 | 6024 | argop = newUNOP(OP_RV2AV, 0, |
8fde6460 | 6025 | scalar(newGVOP(OP_GV, 0, CvUNIQUE(PL_compcv) ? PL_argvgv : PL_defgv))); |
6d4ff0d2 | 6026 | return newUNOP(type, 0, scalar(argop)); |
79072805 | 6027 | } |
11343788 | 6028 | return scalar(modkids(ck_fun(o), type)); |
79072805 LW |
6029 | } |
6030 | ||
6031 | OP * | |
cea2e8a9 | 6032 | Perl_ck_sort(pTHX_ OP *o) |
79072805 | 6033 | { |
8e3f9bdf | 6034 | OP *firstkid; |
bbce6d69 | 6035 | |
9ea6e965 | 6036 | if (o->op_type == OP_SORT && o->op_flags & OPf_STACKED) |
51a19bc0 | 6037 | simplify_sort(o); |
8e3f9bdf GS |
6038 | firstkid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
6039 | if (o->op_flags & OPf_STACKED) { /* may have been cleared */ | |
9c5ffd7c | 6040 | OP *k = NULL; |
8e3f9bdf | 6041 | OP *kid = cUNOPx(firstkid)->op_first; /* get past null */ |
79072805 | 6042 | |
463ee0b2 | 6043 | if (kid->op_type == OP_SCOPE || kid->op_type == OP_LEAVE) { |
79072805 | 6044 | linklist(kid); |
463ee0b2 LW |
6045 | if (kid->op_type == OP_SCOPE) { |
6046 | k = kid->op_next; | |
6047 | kid->op_next = 0; | |
79072805 | 6048 | } |
463ee0b2 | 6049 | else if (kid->op_type == OP_LEAVE) { |
11343788 | 6050 | if (o->op_type == OP_SORT) { |
93c66552 | 6051 | op_null(kid); /* wipe out leave */ |
748a9306 | 6052 | kid->op_next = kid; |
463ee0b2 | 6053 | |
748a9306 LW |
6054 | for (k = kLISTOP->op_first->op_next; k; k = k->op_next) { |
6055 | if (k->op_next == kid) | |
6056 | k->op_next = 0; | |
71a29c3c GS |
6057 | /* don't descend into loops */ |
6058 | else if (k->op_type == OP_ENTERLOOP | |
6059 | || k->op_type == OP_ENTERITER) | |
6060 | { | |
6061 | k = cLOOPx(k)->op_lastop; | |
6062 | } | |
748a9306 | 6063 | } |
463ee0b2 | 6064 | } |
748a9306 LW |
6065 | else |
6066 | kid->op_next = 0; /* just disconnect the leave */ | |
a0d0e21e | 6067 | k = kLISTOP->op_first; |
463ee0b2 | 6068 | } |
a2efc822 | 6069 | CALL_PEEP(k); |
a0d0e21e | 6070 | |
8e3f9bdf GS |
6071 | kid = firstkid; |
6072 | if (o->op_type == OP_SORT) { | |
6073 | /* provide scalar context for comparison function/block */ | |
6074 | kid = scalar(kid); | |
a0d0e21e | 6075 | kid->op_next = kid; |
8e3f9bdf | 6076 | } |
a0d0e21e LW |
6077 | else |
6078 | kid->op_next = k; | |
11343788 | 6079 | o->op_flags |= OPf_SPECIAL; |
79072805 | 6080 | } |
c6e96bcb | 6081 | else if (kid->op_type == OP_RV2SV || kid->op_type == OP_PADSV) |
93c66552 | 6082 | op_null(firstkid); |
8e3f9bdf GS |
6083 | |
6084 | firstkid = firstkid->op_sibling; | |
79072805 | 6085 | } |
bbce6d69 | 6086 | |
8e3f9bdf GS |
6087 | /* provide list context for arguments */ |
6088 | if (o->op_type == OP_SORT) | |
6089 | list(firstkid); | |
6090 | ||
11343788 | 6091 | return o; |
79072805 | 6092 | } |
bda4119b GS |
6093 | |
6094 | STATIC void | |
cea2e8a9 | 6095 | S_simplify_sort(pTHX_ OP *o) |
9c007264 JH |
6096 | { |
6097 | register OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
6098 | OP *k; | |
eb209983 | 6099 | int descending; |
350de78d | 6100 | GV *gv; |
770526c1 | 6101 | const char *gvname; |
9c007264 JH |
6102 | if (!(o->op_flags & OPf_STACKED)) |
6103 | return; | |
1c846c1f NIS |
6104 | GvMULTI_on(gv_fetchpv("a", TRUE, SVt_PV)); |
6105 | GvMULTI_on(gv_fetchpv("b", TRUE, SVt_PV)); | |
82092f1d | 6106 | kid = kUNOP->op_first; /* get past null */ |
9c007264 JH |
6107 | if (kid->op_type != OP_SCOPE) |
6108 | return; | |
6109 | kid = kLISTOP->op_last; /* get past scope */ | |
6110 | switch(kid->op_type) { | |
6111 | case OP_NCMP: | |
6112 | case OP_I_NCMP: | |
6113 | case OP_SCMP: | |
6114 | break; | |
6115 | default: | |
6116 | return; | |
6117 | } | |
6118 | k = kid; /* remember this node*/ | |
6119 | if (kBINOP->op_first->op_type != OP_RV2SV) | |
6120 | return; | |
6121 | kid = kBINOP->op_first; /* get past cmp */ | |
6122 | if (kUNOP->op_first->op_type != OP_GV) | |
6123 | return; | |
6124 | kid = kUNOP->op_first; /* get past rv2sv */ | |
638eceb6 | 6125 | gv = kGVOP_gv; |
350de78d | 6126 | if (GvSTASH(gv) != PL_curstash) |
9c007264 | 6127 | return; |
770526c1 NC |
6128 | gvname = GvNAME(gv); |
6129 | if (*gvname == 'a' && gvname[1] == '\0') | |
eb209983 | 6130 | descending = 0; |
770526c1 | 6131 | else if (*gvname == 'b' && gvname[1] == '\0') |
eb209983 | 6132 | descending = 1; |
9c007264 JH |
6133 | else |
6134 | return; | |
eb209983 | 6135 | |
9c007264 JH |
6136 | kid = k; /* back to cmp */ |
6137 | if (kBINOP->op_last->op_type != OP_RV2SV) | |
6138 | return; | |
6139 | kid = kBINOP->op_last; /* down to 2nd arg */ | |
6140 | if (kUNOP->op_first->op_type != OP_GV) | |
6141 | return; | |
6142 | kid = kUNOP->op_first; /* get past rv2sv */ | |
638eceb6 | 6143 | gv = kGVOP_gv; |
770526c1 NC |
6144 | if (GvSTASH(gv) != PL_curstash) |
6145 | return; | |
6146 | gvname = GvNAME(gv); | |
6147 | if ( descending | |
6148 | ? !(*gvname == 'a' && gvname[1] == '\0') | |
6149 | : !(*gvname == 'b' && gvname[1] == '\0')) | |
9c007264 JH |
6150 | return; |
6151 | o->op_flags &= ~(OPf_STACKED | OPf_SPECIAL); | |
eb209983 NC |
6152 | if (descending) |
6153 | o->op_private |= OPpSORT_DESCEND; | |
9c007264 JH |
6154 | if (k->op_type == OP_NCMP) |
6155 | o->op_private |= OPpSORT_NUMERIC; | |
6156 | if (k->op_type == OP_I_NCMP) | |
6157 | o->op_private |= OPpSORT_NUMERIC | OPpSORT_INTEGER; | |
e507f050 SM |
6158 | kid = cLISTOPo->op_first->op_sibling; |
6159 | cLISTOPo->op_first->op_sibling = kid->op_sibling; /* bypass old block */ | |
6160 | op_free(kid); /* then delete it */ | |
9c007264 | 6161 | } |
79072805 LW |
6162 | |
6163 | OP * | |
cea2e8a9 | 6164 | Perl_ck_split(pTHX_ OP *o) |
79072805 | 6165 | { |
27da23d5 | 6166 | dVAR; |
79072805 | 6167 | register OP *kid; |
aeea060c | 6168 | |
11343788 MB |
6169 | if (o->op_flags & OPf_STACKED) |
6170 | return no_fh_allowed(o); | |
79072805 | 6171 | |
11343788 | 6172 | kid = cLISTOPo->op_first; |
8990e307 | 6173 | if (kid->op_type != OP_NULL) |
cea2e8a9 | 6174 | Perl_croak(aTHX_ "panic: ck_split"); |
8990e307 | 6175 | kid = kid->op_sibling; |
11343788 MB |
6176 | op_free(cLISTOPo->op_first); |
6177 | cLISTOPo->op_first = kid; | |
85e6fe83 | 6178 | if (!kid) { |
79cb57f6 | 6179 | cLISTOPo->op_first = kid = newSVOP(OP_CONST, 0, newSVpvn(" ", 1)); |
11343788 | 6180 | cLISTOPo->op_last = kid; /* There was only one element previously */ |
85e6fe83 | 6181 | } |
79072805 | 6182 | |
de4bf5b3 | 6183 | if (kid->op_type != OP_MATCH || kid->op_flags & OPf_STACKED) { |
551405c4 | 6184 | OP * const sibl = kid->op_sibling; |
463ee0b2 | 6185 | kid->op_sibling = 0; |
131b3ad0 | 6186 | kid = pmruntime( newPMOP(OP_MATCH, OPf_SPECIAL), kid, 0); |
11343788 MB |
6187 | if (cLISTOPo->op_first == cLISTOPo->op_last) |
6188 | cLISTOPo->op_last = kid; | |
6189 | cLISTOPo->op_first = kid; | |
79072805 LW |
6190 | kid->op_sibling = sibl; |
6191 | } | |
6192 | ||
6193 | kid->op_type = OP_PUSHRE; | |
22c35a8c | 6194 | kid->op_ppaddr = PL_ppaddr[OP_PUSHRE]; |
79072805 | 6195 | scalar(kid); |
041457d9 | 6196 | if (((PMOP *)kid)->op_pmflags & PMf_GLOBAL && ckWARN(WARN_REGEXP)) { |
f34840d8 MJD |
6197 | Perl_warner(aTHX_ packWARN(WARN_REGEXP), |
6198 | "Use of /g modifier is meaningless in split"); | |
6199 | } | |
79072805 LW |
6200 | |
6201 | if (!kid->op_sibling) | |
54b9620d | 6202 | append_elem(OP_SPLIT, o, newDEFSVOP()); |
79072805 LW |
6203 | |
6204 | kid = kid->op_sibling; | |
6205 | scalar(kid); | |
6206 | ||
6207 | if (!kid->op_sibling) | |
11343788 | 6208 | append_elem(OP_SPLIT, o, newSVOP(OP_CONST, 0, newSViv(0))); |
79072805 LW |
6209 | |
6210 | kid = kid->op_sibling; | |
6211 | scalar(kid); | |
6212 | ||
6213 | if (kid->op_sibling) | |
53e06cf0 | 6214 | return too_many_arguments(o,OP_DESC(o)); |
79072805 | 6215 | |
11343788 | 6216 | return o; |
79072805 LW |
6217 | } |
6218 | ||
6219 | OP * | |
1c846c1f | 6220 | Perl_ck_join(pTHX_ OP *o) |
eb6e2d6f | 6221 | { |
551405c4 | 6222 | const OP * const kid = cLISTOPo->op_first->op_sibling; |
041457d9 DM |
6223 | if (kid && kid->op_type == OP_MATCH) { |
6224 | if (ckWARN(WARN_SYNTAX)) { | |
6867be6d AL |
6225 | const REGEXP *re = PM_GETRE(kPMOP); |
6226 | const char *pmstr = re ? re->precomp : "STRING"; | |
9014280d | 6227 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
eb6e2d6f GS |
6228 | "/%s/ should probably be written as \"%s\"", |
6229 | pmstr, pmstr); | |
6230 | } | |
6231 | } | |
6232 | return ck_fun(o); | |
6233 | } | |
6234 | ||
6235 | OP * | |
cea2e8a9 | 6236 | Perl_ck_subr(pTHX_ OP *o) |
79072805 | 6237 | { |
11343788 MB |
6238 | OP *prev = ((cUNOPo->op_first->op_sibling) |
6239 | ? cUNOPo : ((UNOP*)cUNOPo->op_first))->op_first; | |
6240 | OP *o2 = prev->op_sibling; | |
4633a7c4 LW |
6241 | OP *cvop; |
6242 | char *proto = 0; | |
6243 | CV *cv = 0; | |
46fc3d4c | 6244 | GV *namegv = 0; |
4633a7c4 LW |
6245 | int optional = 0; |
6246 | I32 arg = 0; | |
5b794e05 | 6247 | I32 contextclass = 0; |
90b7f708 | 6248 | char *e = 0; |
0723351e | 6249 | bool delete_op = 0; |
4633a7c4 | 6250 | |
d3011074 | 6251 | o->op_private |= OPpENTERSUB_HASTARG; |
11343788 | 6252 | for (cvop = o2; cvop->op_sibling; cvop = cvop->op_sibling) ; |
4633a7c4 LW |
6253 | if (cvop->op_type == OP_RV2CV) { |
6254 | SVOP* tmpop; | |
11343788 | 6255 | o->op_private |= (cvop->op_private & OPpENTERSUB_AMPER); |
93c66552 | 6256 | op_null(cvop); /* disable rv2cv */ |
4633a7c4 | 6257 | tmpop = (SVOP*)((UNOP*)cvop)->op_first; |
76cd736e | 6258 | if (tmpop->op_type == OP_GV && !(o->op_private & OPpENTERSUB_AMPER)) { |
638eceb6 | 6259 | GV *gv = cGVOPx_gv(tmpop); |
350de78d | 6260 | cv = GvCVu(gv); |
76cd736e GS |
6261 | if (!cv) |
6262 | tmpop->op_private |= OPpEARLY_CV; | |
06492da6 SF |
6263 | else { |
6264 | if (SvPOK(cv)) { | |
6265 | namegv = CvANON(cv) ? gv : CvGV(cv); | |
8b6b16e7 | 6266 | proto = SvPV_nolen((SV*)cv); |
06492da6 SF |
6267 | } |
6268 | if (CvASSERTION(cv)) { | |
6269 | if (PL_hints & HINT_ASSERTING) { | |
6270 | if (PERLDB_ASSERTION && PL_curstash != PL_debstash) | |
6271 | o->op_private |= OPpENTERSUB_DB; | |
6272 | } | |
8fa7688f | 6273 | else { |
0723351e | 6274 | delete_op = 1; |
041457d9 | 6275 | if (!(PL_hints & HINT_ASSERTIONSSEEN) && ckWARN(WARN_ASSERTIONS)) { |
8fa7688f SF |
6276 | Perl_warner(aTHX_ packWARN(WARN_ASSERTIONS), |
6277 | "Impossible to activate assertion call"); | |
6278 | } | |
6279 | } | |
06492da6 | 6280 | } |
46fc3d4c | 6281 | } |
4633a7c4 LW |
6282 | } |
6283 | } | |
f5d5a27c | 6284 | else if (cvop->op_type == OP_METHOD || cvop->op_type == OP_METHOD_NAMED) { |
7a52d87a GS |
6285 | if (o2->op_type == OP_CONST) |
6286 | o2->op_private &= ~OPpCONST_STRICT; | |
58a40671 | 6287 | else if (o2->op_type == OP_LIST) { |
551405c4 | 6288 | OP * const o = ((UNOP*)o2)->op_first->op_sibling; |
58a40671 GS |
6289 | if (o && o->op_type == OP_CONST) |
6290 | o->op_private &= ~OPpCONST_STRICT; | |
6291 | } | |
7a52d87a | 6292 | } |
3280af22 NIS |
6293 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
6294 | if (PERLDB_SUB && PL_curstash != PL_debstash) | |
11343788 MB |
6295 | o->op_private |= OPpENTERSUB_DB; |
6296 | while (o2 != cvop) { | |
4633a7c4 LW |
6297 | if (proto) { |
6298 | switch (*proto) { | |
6299 | case '\0': | |
5dc0d613 | 6300 | return too_many_arguments(o, gv_ename(namegv)); |
4633a7c4 LW |
6301 | case ';': |
6302 | optional = 1; | |
6303 | proto++; | |
6304 | continue; | |
6305 | case '$': | |
6306 | proto++; | |
6307 | arg++; | |
11343788 | 6308 | scalar(o2); |
4633a7c4 LW |
6309 | break; |
6310 | case '%': | |
6311 | case '@': | |
11343788 | 6312 | list(o2); |
4633a7c4 LW |
6313 | arg++; |
6314 | break; | |
6315 | case '&': | |
6316 | proto++; | |
6317 | arg++; | |
11343788 | 6318 | if (o2->op_type != OP_REFGEN && o2->op_type != OP_UNDEF) |
75fc29ea GS |
6319 | bad_type(arg, |
6320 | arg == 1 ? "block or sub {}" : "sub {}", | |
6321 | gv_ename(namegv), o2); | |
4633a7c4 LW |
6322 | break; |
6323 | case '*': | |
2ba6ecf4 | 6324 | /* '*' allows any scalar type, including bareword */ |
4633a7c4 LW |
6325 | proto++; |
6326 | arg++; | |
11343788 | 6327 | if (o2->op_type == OP_RV2GV) |
2ba6ecf4 | 6328 | goto wrapref; /* autoconvert GLOB -> GLOBref */ |
7a52d87a GS |
6329 | else if (o2->op_type == OP_CONST) |
6330 | o2->op_private &= ~OPpCONST_STRICT; | |
9675f7ac GS |
6331 | else if (o2->op_type == OP_ENTERSUB) { |
6332 | /* accidental subroutine, revert to bareword */ | |
6333 | OP *gvop = ((UNOP*)o2)->op_first; | |
6334 | if (gvop && gvop->op_type == OP_NULL) { | |
6335 | gvop = ((UNOP*)gvop)->op_first; | |
6336 | if (gvop) { | |
6337 | for (; gvop->op_sibling; gvop = gvop->op_sibling) | |
6338 | ; | |
6339 | if (gvop && | |
6340 | (gvop->op_private & OPpENTERSUB_NOPAREN) && | |
6341 | (gvop = ((UNOP*)gvop)->op_first) && | |
6342 | gvop->op_type == OP_GV) | |
6343 | { | |
551405c4 AL |
6344 | GV * const gv = cGVOPx_gv(gvop); |
6345 | OP * const sibling = o2->op_sibling; | |
6346 | SV * const n = newSVpvn("",0); | |
9675f7ac | 6347 | op_free(o2); |
2a797ae2 | 6348 | gv_fullname4(n, gv, "", FALSE); |
2692f720 | 6349 | o2 = newSVOP(OP_CONST, 0, n); |
9675f7ac GS |
6350 | prev->op_sibling = o2; |
6351 | o2->op_sibling = sibling; | |
6352 | } | |
6353 | } | |
6354 | } | |
6355 | } | |
2ba6ecf4 GS |
6356 | scalar(o2); |
6357 | break; | |
5b794e05 JH |
6358 | case '[': case ']': |
6359 | goto oops; | |
6360 | break; | |
4633a7c4 LW |
6361 | case '\\': |
6362 | proto++; | |
6363 | arg++; | |
5b794e05 | 6364 | again: |
4633a7c4 | 6365 | switch (*proto++) { |
5b794e05 JH |
6366 | case '[': |
6367 | if (contextclass++ == 0) { | |
841d93c8 | 6368 | e = strchr(proto, ']'); |
5b794e05 JH |
6369 | if (!e || e == proto) |
6370 | goto oops; | |
6371 | } | |
6372 | else | |
6373 | goto oops; | |
6374 | goto again; | |
6375 | break; | |
6376 | case ']': | |
466bafcd | 6377 | if (contextclass) { |
6867be6d AL |
6378 | char *p = proto; |
6379 | const char s = *p; | |
466bafcd RGS |
6380 | contextclass = 0; |
6381 | *p = '\0'; | |
6382 | while (*--p != '['); | |
1eb1540c | 6383 | bad_type(arg, Perl_form(aTHX_ "one of %s", p), |
466bafcd RGS |
6384 | gv_ename(namegv), o2); |
6385 | *proto = s; | |
6386 | } else | |
5b794e05 JH |
6387 | goto oops; |
6388 | break; | |
4633a7c4 | 6389 | case '*': |
5b794e05 JH |
6390 | if (o2->op_type == OP_RV2GV) |
6391 | goto wrapref; | |
6392 | if (!contextclass) | |
6393 | bad_type(arg, "symbol", gv_ename(namegv), o2); | |
6394 | break; | |
4633a7c4 | 6395 | case '&': |
5b794e05 JH |
6396 | if (o2->op_type == OP_ENTERSUB) |
6397 | goto wrapref; | |
6398 | if (!contextclass) | |
6399 | bad_type(arg, "subroutine entry", gv_ename(namegv), o2); | |
6400 | break; | |
4633a7c4 | 6401 | case '$': |
5b794e05 JH |
6402 | if (o2->op_type == OP_RV2SV || |
6403 | o2->op_type == OP_PADSV || | |
6404 | o2->op_type == OP_HELEM || | |
6405 | o2->op_type == OP_AELEM || | |
6406 | o2->op_type == OP_THREADSV) | |
6407 | goto wrapref; | |
6408 | if (!contextclass) | |
5dc0d613 | 6409 | bad_type(arg, "scalar", gv_ename(namegv), o2); |
5b794e05 | 6410 | break; |
4633a7c4 | 6411 | case '@': |
5b794e05 JH |
6412 | if (o2->op_type == OP_RV2AV || |
6413 | o2->op_type == OP_PADAV) | |
6414 | goto wrapref; | |
6415 | if (!contextclass) | |
5dc0d613 | 6416 | bad_type(arg, "array", gv_ename(namegv), o2); |
5b794e05 | 6417 | break; |
4633a7c4 | 6418 | case '%': |
5b794e05 JH |
6419 | if (o2->op_type == OP_RV2HV || |
6420 | o2->op_type == OP_PADHV) | |
6421 | goto wrapref; | |
6422 | if (!contextclass) | |
6423 | bad_type(arg, "hash", gv_ename(namegv), o2); | |
6424 | break; | |
6425 | wrapref: | |
4633a7c4 | 6426 | { |
551405c4 AL |
6427 | OP* const kid = o2; |
6428 | OP* const sib = kid->op_sibling; | |
4633a7c4 | 6429 | kid->op_sibling = 0; |
6fa846a0 GS |
6430 | o2 = newUNOP(OP_REFGEN, 0, kid); |
6431 | o2->op_sibling = sib; | |
e858de61 | 6432 | prev->op_sibling = o2; |
4633a7c4 | 6433 | } |
841d93c8 | 6434 | if (contextclass && e) { |
5b794e05 JH |
6435 | proto = e + 1; |
6436 | contextclass = 0; | |
6437 | } | |
4633a7c4 LW |
6438 | break; |
6439 | default: goto oops; | |
6440 | } | |
5b794e05 JH |
6441 | if (contextclass) |
6442 | goto again; | |
4633a7c4 | 6443 | break; |
b1cb66bf | 6444 | case ' ': |
6445 | proto++; | |
6446 | continue; | |
4633a7c4 LW |
6447 | default: |
6448 | oops: | |
35c1215d NC |
6449 | Perl_croak(aTHX_ "Malformed prototype for %s: %"SVf, |
6450 | gv_ename(namegv), cv); | |
4633a7c4 LW |
6451 | } |
6452 | } | |
6453 | else | |
11343788 MB |
6454 | list(o2); |
6455 | mod(o2, OP_ENTERSUB); | |
6456 | prev = o2; | |
6457 | o2 = o2->op_sibling; | |
551405c4 | 6458 | } /* while */ |
fb73857a | 6459 | if (proto && !optional && |
6460 | (*proto && *proto != '@' && *proto != '%' && *proto != ';')) | |
5dc0d613 | 6461 | return too_few_arguments(o, gv_ename(namegv)); |
0723351e | 6462 | if(delete_op) { |
06492da6 SF |
6463 | op_free(o); |
6464 | o=newSVOP(OP_CONST, 0, newSViv(0)); | |
6465 | } | |
11343788 | 6466 | return o; |
79072805 LW |
6467 | } |
6468 | ||
6469 | OP * | |
cea2e8a9 | 6470 | Perl_ck_svconst(pTHX_ OP *o) |
8990e307 | 6471 | { |
11343788 MB |
6472 | SvREADONLY_on(cSVOPo->op_sv); |
6473 | return o; | |
8990e307 LW |
6474 | } |
6475 | ||
6476 | OP * | |
cea2e8a9 | 6477 | Perl_ck_trunc(pTHX_ OP *o) |
79072805 | 6478 | { |
11343788 MB |
6479 | if (o->op_flags & OPf_KIDS) { |
6480 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 | 6481 | |
a0d0e21e LW |
6482 | if (kid->op_type == OP_NULL) |
6483 | kid = (SVOP*)kid->op_sibling; | |
bb53490d GS |
6484 | if (kid && kid->op_type == OP_CONST && |
6485 | (kid->op_private & OPpCONST_BARE)) | |
6486 | { | |
11343788 | 6487 | o->op_flags |= OPf_SPECIAL; |
bb53490d GS |
6488 | kid->op_private &= ~OPpCONST_STRICT; |
6489 | } | |
79072805 | 6490 | } |
11343788 | 6491 | return ck_fun(o); |
79072805 LW |
6492 | } |
6493 | ||
35fba0d9 | 6494 | OP * |
bab9c0ac RGS |
6495 | Perl_ck_unpack(pTHX_ OP *o) |
6496 | { | |
6497 | OP *kid = cLISTOPo->op_first; | |
6498 | if (kid->op_sibling) { | |
6499 | kid = kid->op_sibling; | |
6500 | if (!kid->op_sibling) | |
6501 | kid->op_sibling = newDEFSVOP(); | |
6502 | } | |
6503 | return ck_fun(o); | |
6504 | } | |
6505 | ||
6506 | OP * | |
35fba0d9 RG |
6507 | Perl_ck_substr(pTHX_ OP *o) |
6508 | { | |
6509 | o = ck_fun(o); | |
6510 | if ((o->op_flags & OPf_KIDS) && o->op_private == 4) { | |
6511 | OP *kid = cLISTOPo->op_first; | |
6512 | ||
6513 | if (kid->op_type == OP_NULL) | |
6514 | kid = kid->op_sibling; | |
6515 | if (kid) | |
6516 | kid->op_flags |= OPf_MOD; | |
6517 | ||
6518 | } | |
6519 | return o; | |
6520 | } | |
6521 | ||
61b743bb DM |
6522 | /* A peephole optimizer. We visit the ops in the order they're to execute. |
6523 | * See the comments at the top of this file for more details about when | |
6524 | * peep() is called */ | |
463ee0b2 | 6525 | |
79072805 | 6526 | void |
864dbfa3 | 6527 | Perl_peep(pTHX_ register OP *o) |
79072805 | 6528 | { |
27da23d5 | 6529 | dVAR; |
79072805 | 6530 | register OP* oldop = 0; |
2d8e6c8d | 6531 | |
2814eb74 | 6532 | if (!o || o->op_opt) |
79072805 | 6533 | return; |
a0d0e21e | 6534 | ENTER; |
462e5cf6 | 6535 | SAVEOP(); |
7766f137 | 6536 | SAVEVPTR(PL_curcop); |
a0d0e21e | 6537 | for (; o; o = o->op_next) { |
2814eb74 | 6538 | if (o->op_opt) |
a0d0e21e | 6539 | break; |
533c011a | 6540 | PL_op = o; |
a0d0e21e | 6541 | switch (o->op_type) { |
acb36ea4 | 6542 | case OP_SETSTATE: |
a0d0e21e LW |
6543 | case OP_NEXTSTATE: |
6544 | case OP_DBSTATE: | |
3280af22 | 6545 | PL_curcop = ((COP*)o); /* for warnings */ |
2814eb74 | 6546 | o->op_opt = 1; |
a0d0e21e LW |
6547 | break; |
6548 | ||
a0d0e21e | 6549 | case OP_CONST: |
7a52d87a GS |
6550 | if (cSVOPo->op_private & OPpCONST_STRICT) |
6551 | no_bareword_allowed(o); | |
7766f137 | 6552 | #ifdef USE_ITHREADS |
3848b962 | 6553 | case OP_METHOD_NAMED: |
7766f137 GS |
6554 | /* Relocate sv to the pad for thread safety. |
6555 | * Despite being a "constant", the SV is written to, | |
6556 | * for reference counts, sv_upgrade() etc. */ | |
6557 | if (cSVOP->op_sv) { | |
6867be6d | 6558 | const PADOFFSET ix = pad_alloc(OP_CONST, SVs_PADTMP); |
330e22d5 | 6559 | if (o->op_type == OP_CONST && SvPADTMP(cSVOPo->op_sv)) { |
6a7129a1 | 6560 | /* If op_sv is already a PADTMP then it is being used by |
9a049f1c | 6561 | * some pad, so make a copy. */ |
dd2155a4 DM |
6562 | sv_setsv(PAD_SVl(ix),cSVOPo->op_sv); |
6563 | SvREADONLY_on(PAD_SVl(ix)); | |
6a7129a1 GS |
6564 | SvREFCNT_dec(cSVOPo->op_sv); |
6565 | } | |
6566 | else { | |
dd2155a4 | 6567 | SvREFCNT_dec(PAD_SVl(ix)); |
6a7129a1 | 6568 | SvPADTMP_on(cSVOPo->op_sv); |
dd2155a4 | 6569 | PAD_SETSV(ix, cSVOPo->op_sv); |
9a049f1c | 6570 | /* XXX I don't know how this isn't readonly already. */ |
dd2155a4 | 6571 | SvREADONLY_on(PAD_SVl(ix)); |
6a7129a1 | 6572 | } |
7766f137 GS |
6573 | cSVOPo->op_sv = Nullsv; |
6574 | o->op_targ = ix; | |
6575 | } | |
6576 | #endif | |
2814eb74 | 6577 | o->op_opt = 1; |
07447971 GS |
6578 | break; |
6579 | ||
df91b2c5 AE |
6580 | case OP_CONCAT: |
6581 | if (o->op_next && o->op_next->op_type == OP_STRINGIFY) { | |
6582 | if (o->op_next->op_private & OPpTARGET_MY) { | |
6583 | if (o->op_flags & OPf_STACKED) /* chained concats */ | |
6584 | goto ignore_optimization; | |
6585 | else { | |
6586 | /* assert(PL_opargs[o->op_type] & OA_TARGLEX); */ | |
6587 | o->op_targ = o->op_next->op_targ; | |
6588 | o->op_next->op_targ = 0; | |
6589 | o->op_private |= OPpTARGET_MY; | |
6590 | } | |
6591 | } | |
6592 | op_null(o->op_next); | |
6593 | } | |
6594 | ignore_optimization: | |
2814eb74 | 6595 | o->op_opt = 1; |
df91b2c5 | 6596 | break; |
8990e307 | 6597 | case OP_STUB: |
54310121 | 6598 | if ((o->op_flags & OPf_WANT) != OPf_WANT_LIST) { |
2814eb74 | 6599 | o->op_opt = 1; |
54310121 | 6600 | break; /* Scalar stub must produce undef. List stub is noop */ |
8990e307 | 6601 | } |
748a9306 | 6602 | goto nothin; |
79072805 | 6603 | case OP_NULL: |
acb36ea4 GS |
6604 | if (o->op_targ == OP_NEXTSTATE |
6605 | || o->op_targ == OP_DBSTATE | |
6606 | || o->op_targ == OP_SETSTATE) | |
6607 | { | |
3280af22 | 6608 | PL_curcop = ((COP*)o); |
acb36ea4 | 6609 | } |
dad75012 AMS |
6610 | /* XXX: We avoid setting op_seq here to prevent later calls |
6611 | to peep() from mistakenly concluding that optimisation | |
6612 | has already occurred. This doesn't fix the real problem, | |
6613 | though (See 20010220.007). AMS 20010719 */ | |
2814eb74 | 6614 | /* op_seq functionality is now replaced by op_opt */ |
dad75012 AMS |
6615 | if (oldop && o->op_next) { |
6616 | oldop->op_next = o->op_next; | |
6617 | continue; | |
6618 | } | |
6619 | break; | |
79072805 | 6620 | case OP_SCALAR: |
93a17b20 | 6621 | case OP_LINESEQ: |
463ee0b2 | 6622 | case OP_SCOPE: |
748a9306 | 6623 | nothin: |
a0d0e21e LW |
6624 | if (oldop && o->op_next) { |
6625 | oldop->op_next = o->op_next; | |
79072805 LW |
6626 | continue; |
6627 | } | |
2814eb74 | 6628 | o->op_opt = 1; |
79072805 LW |
6629 | break; |
6630 | ||
6a077020 | 6631 | case OP_PADAV: |
79072805 | 6632 | case OP_GV: |
6a077020 DM |
6633 | if (o->op_type == OP_PADAV || o->op_next->op_type == OP_RV2AV) { |
6634 | OP* pop = (o->op_type == OP_PADAV) ? | |
6635 | o->op_next : o->op_next->op_next; | |
a0d0e21e | 6636 | IV i; |
f9dc862f | 6637 | if (pop && pop->op_type == OP_CONST && |
af5acbb4 | 6638 | ((PL_op = pop->op_next)) && |
8990e307 | 6639 | pop->op_next->op_type == OP_AELEM && |
a0d0e21e | 6640 | !(pop->op_next->op_private & |
78f9721b | 6641 | (OPpLVAL_INTRO|OPpLVAL_DEFER|OPpDEREF|OPpMAYBE_LVSUB)) && |
b0840a2a | 6642 | (i = SvIV(((SVOP*)pop)->op_sv) - PL_curcop->cop_arybase) |
a0d0e21e | 6643 | <= 255 && |
8990e307 LW |
6644 | i >= 0) |
6645 | { | |
350de78d | 6646 | GV *gv; |
af5acbb4 DM |
6647 | if (cSVOPx(pop)->op_private & OPpCONST_STRICT) |
6648 | no_bareword_allowed(pop); | |
6a077020 DM |
6649 | if (o->op_type == OP_GV) |
6650 | op_null(o->op_next); | |
93c66552 DM |
6651 | op_null(pop->op_next); |
6652 | op_null(pop); | |
a0d0e21e LW |
6653 | o->op_flags |= pop->op_next->op_flags & OPf_MOD; |
6654 | o->op_next = pop->op_next->op_next; | |
22c35a8c | 6655 | o->op_ppaddr = PL_ppaddr[OP_AELEMFAST]; |
a0d0e21e | 6656 | o->op_private = (U8)i; |
6a077020 DM |
6657 | if (o->op_type == OP_GV) { |
6658 | gv = cGVOPo_gv; | |
6659 | GvAVn(gv); | |
6660 | } | |
6661 | else | |
6662 | o->op_flags |= OPf_SPECIAL; | |
6663 | o->op_type = OP_AELEMFAST; | |
6664 | } | |
6665 | o->op_opt = 1; | |
6666 | break; | |
6667 | } | |
6668 | ||
6669 | if (o->op_next->op_type == OP_RV2SV) { | |
6670 | if (!(o->op_next->op_private & OPpDEREF)) { | |
6671 | op_null(o->op_next); | |
6672 | o->op_private |= o->op_next->op_private & (OPpLVAL_INTRO | |
6673 | | OPpOUR_INTRO); | |
6674 | o->op_next = o->op_next->op_next; | |
6675 | o->op_type = OP_GVSV; | |
6676 | o->op_ppaddr = PL_ppaddr[OP_GVSV]; | |
8990e307 | 6677 | } |
79072805 | 6678 | } |
e476b1b5 | 6679 | else if ((o->op_private & OPpEARLY_CV) && ckWARN(WARN_PROTOTYPE)) { |
551405c4 | 6680 | GV * const gv = cGVOPo_gv; |
b15aece3 | 6681 | if (SvTYPE(gv) == SVt_PVGV && GvCV(gv) && SvPVX_const(GvCV(gv))) { |
76cd736e | 6682 | /* XXX could check prototype here instead of just carping */ |
551405c4 | 6683 | SV * const sv = sv_newmortal(); |
76cd736e | 6684 | gv_efullname3(sv, gv, Nullch); |
9014280d | 6685 | Perl_warner(aTHX_ packWARN(WARN_PROTOTYPE), |
35c1215d NC |
6686 | "%"SVf"() called too early to check prototype", |
6687 | sv); | |
76cd736e GS |
6688 | } |
6689 | } | |
89de2904 AMS |
6690 | else if (o->op_next->op_type == OP_READLINE |
6691 | && o->op_next->op_next->op_type == OP_CONCAT | |
6692 | && (o->op_next->op_next->op_flags & OPf_STACKED)) | |
6693 | { | |
d2c45030 AMS |
6694 | /* Turn "$a .= <FH>" into an OP_RCATLINE. AMS 20010917 */ |
6695 | o->op_type = OP_RCATLINE; | |
6696 | o->op_flags |= OPf_STACKED; | |
6697 | o->op_ppaddr = PL_ppaddr[OP_RCATLINE]; | |
89de2904 | 6698 | op_null(o->op_next->op_next); |
d2c45030 | 6699 | op_null(o->op_next); |
89de2904 | 6700 | } |
76cd736e | 6701 | |
2814eb74 | 6702 | o->op_opt = 1; |
79072805 LW |
6703 | break; |
6704 | ||
a0d0e21e | 6705 | case OP_MAPWHILE: |
79072805 LW |
6706 | case OP_GREPWHILE: |
6707 | case OP_AND: | |
6708 | case OP_OR: | |
c963b151 | 6709 | case OP_DOR: |
2c2d71f5 JH |
6710 | case OP_ANDASSIGN: |
6711 | case OP_ORASSIGN: | |
c963b151 | 6712 | case OP_DORASSIGN: |
1a67a97c SM |
6713 | case OP_COND_EXPR: |
6714 | case OP_RANGE: | |
2814eb74 | 6715 | o->op_opt = 1; |
fd4d1407 IZ |
6716 | while (cLOGOP->op_other->op_type == OP_NULL) |
6717 | cLOGOP->op_other = cLOGOP->op_other->op_next; | |
a2efc822 | 6718 | peep(cLOGOP->op_other); /* Recursive calls are not replaced by fptr calls */ |
79072805 LW |
6719 | break; |
6720 | ||
79072805 | 6721 | case OP_ENTERLOOP: |
9c2ca71a | 6722 | case OP_ENTERITER: |
2814eb74 | 6723 | o->op_opt = 1; |
58cccf98 SM |
6724 | while (cLOOP->op_redoop->op_type == OP_NULL) |
6725 | cLOOP->op_redoop = cLOOP->op_redoop->op_next; | |
79072805 | 6726 | peep(cLOOP->op_redoop); |
58cccf98 SM |
6727 | while (cLOOP->op_nextop->op_type == OP_NULL) |
6728 | cLOOP->op_nextop = cLOOP->op_nextop->op_next; | |
79072805 | 6729 | peep(cLOOP->op_nextop); |
58cccf98 SM |
6730 | while (cLOOP->op_lastop->op_type == OP_NULL) |
6731 | cLOOP->op_lastop = cLOOP->op_lastop->op_next; | |
79072805 LW |
6732 | peep(cLOOP->op_lastop); |
6733 | break; | |
6734 | ||
8782bef2 | 6735 | case OP_QR: |
79072805 LW |
6736 | case OP_MATCH: |
6737 | case OP_SUBST: | |
2814eb74 | 6738 | o->op_opt = 1; |
9041c2e3 | 6739 | while (cPMOP->op_pmreplstart && |
58cccf98 SM |
6740 | cPMOP->op_pmreplstart->op_type == OP_NULL) |
6741 | cPMOP->op_pmreplstart = cPMOP->op_pmreplstart->op_next; | |
a0d0e21e | 6742 | peep(cPMOP->op_pmreplstart); |
79072805 LW |
6743 | break; |
6744 | ||
a0d0e21e | 6745 | case OP_EXEC: |
2814eb74 | 6746 | o->op_opt = 1; |
041457d9 DM |
6747 | if (o->op_next && o->op_next->op_type == OP_NEXTSTATE |
6748 | && ckWARN(WARN_SYNTAX)) | |
6749 | { | |
a0d0e21e | 6750 | if (o->op_next->op_sibling && |
20408e3c GS |
6751 | o->op_next->op_sibling->op_type != OP_EXIT && |
6752 | o->op_next->op_sibling->op_type != OP_WARN && | |
a0d0e21e | 6753 | o->op_next->op_sibling->op_type != OP_DIE) { |
6867be6d | 6754 | const line_t oldline = CopLINE(PL_curcop); |
a0d0e21e | 6755 | |
57843af0 | 6756 | CopLINE_set(PL_curcop, CopLINE((COP*)o->op_next)); |
9014280d | 6757 | Perl_warner(aTHX_ packWARN(WARN_EXEC), |
eeb6a2c9 | 6758 | "Statement unlikely to be reached"); |
9014280d | 6759 | Perl_warner(aTHX_ packWARN(WARN_EXEC), |
cc507455 | 6760 | "\t(Maybe you meant system() when you said exec()?)\n"); |
57843af0 | 6761 | CopLINE_set(PL_curcop, oldline); |
a0d0e21e LW |
6762 | } |
6763 | } | |
6764 | break; | |
b2ffa427 | 6765 | |
c750a3ec | 6766 | case OP_HELEM: { |
e75d1f10 | 6767 | UNOP *rop; |
6d822dc4 | 6768 | SV *lexname; |
e75d1f10 | 6769 | GV **fields; |
6d822dc4 | 6770 | SV **svp, *sv; |
d5263905 | 6771 | const char *key = NULL; |
c750a3ec | 6772 | STRLEN keylen; |
b2ffa427 | 6773 | |
2814eb74 | 6774 | o->op_opt = 1; |
1c846c1f NIS |
6775 | |
6776 | if (((BINOP*)o)->op_last->op_type != OP_CONST) | |
c750a3ec | 6777 | break; |
1c846c1f NIS |
6778 | |
6779 | /* Make the CONST have a shared SV */ | |
6780 | svp = cSVOPx_svp(((BINOP*)o)->op_last); | |
3049cdab | 6781 | if ((!SvFAKE(sv = *svp) || !SvREADONLY(sv)) && !IS_PADCONST(sv)) { |
d5263905 | 6782 | key = SvPV_const(sv, keylen); |
25716404 GS |
6783 | lexname = newSVpvn_share(key, |
6784 | SvUTF8(sv) ? -(I32)keylen : keylen, | |
6785 | 0); | |
1c846c1f NIS |
6786 | SvREFCNT_dec(sv); |
6787 | *svp = lexname; | |
6788 | } | |
e75d1f10 RD |
6789 | |
6790 | if ((o->op_private & (OPpLVAL_INTRO))) | |
6791 | break; | |
6792 | ||
6793 | rop = (UNOP*)((BINOP*)o)->op_first; | |
6794 | if (rop->op_type != OP_RV2HV || rop->op_first->op_type != OP_PADSV) | |
6795 | break; | |
6796 | lexname = *av_fetch(PL_comppad_name, rop->op_first->op_targ, TRUE); | |
6797 | if (!(SvFLAGS(lexname) & SVpad_TYPED)) | |
6798 | break; | |
6799 | fields = (GV**)hv_fetch(SvSTASH(lexname), "FIELDS", 6, FALSE); | |
6800 | if (!fields || !GvHV(*fields)) | |
6801 | break; | |
93524f2b | 6802 | key = SvPV_const(*svp, keylen); |
e75d1f10 RD |
6803 | if (!hv_fetch(GvHV(*fields), key, |
6804 | SvUTF8(*svp) ? -(I32)keylen : keylen, FALSE)) | |
6805 | { | |
6806 | Perl_croak(aTHX_ "No such class field \"%s\" " | |
6807 | "in variable %s of type %s", | |
93524f2b | 6808 | key, SvPV_nolen_const(lexname), HvNAME_get(SvSTASH(lexname))); |
e75d1f10 RD |
6809 | } |
6810 | ||
6d822dc4 MS |
6811 | break; |
6812 | } | |
c750a3ec | 6813 | |
e75d1f10 RD |
6814 | case OP_HSLICE: { |
6815 | UNOP *rop; | |
6816 | SV *lexname; | |
6817 | GV **fields; | |
6818 | SV **svp; | |
93524f2b | 6819 | const char *key; |
e75d1f10 RD |
6820 | STRLEN keylen; |
6821 | SVOP *first_key_op, *key_op; | |
6822 | ||
6823 | if ((o->op_private & (OPpLVAL_INTRO)) | |
6824 | /* I bet there's always a pushmark... */ | |
6825 | || ((LISTOP*)o)->op_first->op_sibling->op_type != OP_LIST) | |
6826 | /* hmmm, no optimization if list contains only one key. */ | |
6827 | break; | |
6828 | rop = (UNOP*)((LISTOP*)o)->op_last; | |
6829 | if (rop->op_type != OP_RV2HV) | |
6830 | break; | |
6831 | if (rop->op_first->op_type == OP_PADSV) | |
6832 | /* @$hash{qw(keys here)} */ | |
6833 | rop = (UNOP*)rop->op_first; | |
6834 | else { | |
6835 | /* @{$hash}{qw(keys here)} */ | |
6836 | if (rop->op_first->op_type == OP_SCOPE | |
6837 | && cLISTOPx(rop->op_first)->op_last->op_type == OP_PADSV) | |
6838 | { | |
6839 | rop = (UNOP*)cLISTOPx(rop->op_first)->op_last; | |
6840 | } | |
6841 | else | |
6842 | break; | |
6843 | } | |
6844 | ||
6845 | lexname = *av_fetch(PL_comppad_name, rop->op_targ, TRUE); | |
6846 | if (!(SvFLAGS(lexname) & SVpad_TYPED)) | |
6847 | break; | |
6848 | fields = (GV**)hv_fetch(SvSTASH(lexname), "FIELDS", 6, FALSE); | |
6849 | if (!fields || !GvHV(*fields)) | |
6850 | break; | |
6851 | /* Again guessing that the pushmark can be jumped over.... */ | |
6852 | first_key_op = (SVOP*)((LISTOP*)((LISTOP*)o)->op_first->op_sibling) | |
6853 | ->op_first->op_sibling; | |
6854 | for (key_op = first_key_op; key_op; | |
6855 | key_op = (SVOP*)key_op->op_sibling) { | |
6856 | if (key_op->op_type != OP_CONST) | |
6857 | continue; | |
6858 | svp = cSVOPx_svp(key_op); | |
93524f2b | 6859 | key = SvPV_const(*svp, keylen); |
e75d1f10 RD |
6860 | if (!hv_fetch(GvHV(*fields), key, |
6861 | SvUTF8(*svp) ? -(I32)keylen : keylen, FALSE)) | |
6862 | { | |
6863 | Perl_croak(aTHX_ "No such class field \"%s\" " | |
6864 | "in variable %s of type %s", | |
bfcb3514 | 6865 | key, SvPV_nolen(lexname), HvNAME_get(SvSTASH(lexname))); |
e75d1f10 RD |
6866 | } |
6867 | } | |
6868 | break; | |
6869 | } | |
6870 | ||
fe1bc4cf | 6871 | case OP_SORT: { |
fe1bc4cf | 6872 | /* will point to RV2AV or PADAV op on LHS/RHS of assign */ |
551405c4 | 6873 | OP *oleft; |
fe1bc4cf DM |
6874 | OP *o2; |
6875 | ||
fe1bc4cf | 6876 | /* check that RHS of sort is a single plain array */ |
551405c4 | 6877 | OP *oright = cUNOPo->op_first; |
fe1bc4cf DM |
6878 | if (!oright || oright->op_type != OP_PUSHMARK) |
6879 | break; | |
471178c0 NC |
6880 | |
6881 | /* reverse sort ... can be optimised. */ | |
6882 | if (!cUNOPo->op_sibling) { | |
6883 | /* Nothing follows us on the list. */ | |
551405c4 | 6884 | OP * const reverse = o->op_next; |
471178c0 NC |
6885 | |
6886 | if (reverse->op_type == OP_REVERSE && | |
6887 | (reverse->op_flags & OPf_WANT) == OPf_WANT_LIST) { | |
551405c4 | 6888 | OP * const pushmark = cUNOPx(reverse)->op_first; |
471178c0 NC |
6889 | if (pushmark && (pushmark->op_type == OP_PUSHMARK) |
6890 | && (cUNOPx(pushmark)->op_sibling == o)) { | |
6891 | /* reverse -> pushmark -> sort */ | |
6892 | o->op_private |= OPpSORT_REVERSE; | |
6893 | op_null(reverse); | |
6894 | pushmark->op_next = oright->op_next; | |
6895 | op_null(oright); | |
6896 | } | |
6897 | } | |
6898 | } | |
6899 | ||
6900 | /* make @a = sort @a act in-place */ | |
6901 | ||
6902 | o->op_opt = 1; | |
6903 | ||
fe1bc4cf DM |
6904 | oright = cUNOPx(oright)->op_sibling; |
6905 | if (!oright) | |
6906 | break; | |
6907 | if (oright->op_type == OP_NULL) { /* skip sort block/sub */ | |
6908 | oright = cUNOPx(oright)->op_sibling; | |
6909 | } | |
6910 | ||
6911 | if (!oright || | |
6912 | (oright->op_type != OP_RV2AV && oright->op_type != OP_PADAV) | |
6913 | || oright->op_next != o | |
6914 | || (oright->op_private & OPpLVAL_INTRO) | |
6915 | ) | |
6916 | break; | |
6917 | ||
6918 | /* o2 follows the chain of op_nexts through the LHS of the | |
6919 | * assign (if any) to the aassign op itself */ | |
6920 | o2 = o->op_next; | |
6921 | if (!o2 || o2->op_type != OP_NULL) | |
6922 | break; | |
6923 | o2 = o2->op_next; | |
6924 | if (!o2 || o2->op_type != OP_PUSHMARK) | |
6925 | break; | |
6926 | o2 = o2->op_next; | |
6927 | if (o2 && o2->op_type == OP_GV) | |
6928 | o2 = o2->op_next; | |
6929 | if (!o2 | |
6930 | || (o2->op_type != OP_PADAV && o2->op_type != OP_RV2AV) | |
6931 | || (o2->op_private & OPpLVAL_INTRO) | |
6932 | ) | |
6933 | break; | |
6934 | oleft = o2; | |
6935 | o2 = o2->op_next; | |
6936 | if (!o2 || o2->op_type != OP_NULL) | |
6937 | break; | |
6938 | o2 = o2->op_next; | |
6939 | if (!o2 || o2->op_type != OP_AASSIGN | |
6940 | || (o2->op_flags & OPf_WANT) != OPf_WANT_VOID) | |
6941 | break; | |
6942 | ||
db7511db DM |
6943 | /* check that the sort is the first arg on RHS of assign */ |
6944 | ||
6945 | o2 = cUNOPx(o2)->op_first; | |
6946 | if (!o2 || o2->op_type != OP_NULL) | |
6947 | break; | |
6948 | o2 = cUNOPx(o2)->op_first; | |
6949 | if (!o2 || o2->op_type != OP_PUSHMARK) | |
6950 | break; | |
6951 | if (o2->op_sibling != o) | |
6952 | break; | |
6953 | ||
fe1bc4cf DM |
6954 | /* check the array is the same on both sides */ |
6955 | if (oleft->op_type == OP_RV2AV) { | |
6956 | if (oright->op_type != OP_RV2AV | |
6957 | || !cUNOPx(oright)->op_first | |
6958 | || cUNOPx(oright)->op_first->op_type != OP_GV | |
6959 | || cGVOPx_gv(cUNOPx(oleft)->op_first) != | |
6960 | cGVOPx_gv(cUNOPx(oright)->op_first) | |
6961 | ) | |
6962 | break; | |
6963 | } | |
6964 | else if (oright->op_type != OP_PADAV | |
6965 | || oright->op_targ != oleft->op_targ | |
6966 | ) | |
6967 | break; | |
6968 | ||
6969 | /* transfer MODishness etc from LHS arg to RHS arg */ | |
6970 | oright->op_flags = oleft->op_flags; | |
6971 | o->op_private |= OPpSORT_INPLACE; | |
6972 | ||
6973 | /* excise push->gv->rv2av->null->aassign */ | |
6974 | o2 = o->op_next->op_next; | |
6975 | op_null(o2); /* PUSHMARK */ | |
6976 | o2 = o2->op_next; | |
6977 | if (o2->op_type == OP_GV) { | |
6978 | op_null(o2); /* GV */ | |
6979 | o2 = o2->op_next; | |
6980 | } | |
6981 | op_null(o2); /* RV2AV or PADAV */ | |
6982 | o2 = o2->op_next->op_next; | |
6983 | op_null(o2); /* AASSIGN */ | |
6984 | ||
6985 | o->op_next = o2->op_next; | |
6986 | ||
6987 | break; | |
6988 | } | |
ef3e5ea9 NC |
6989 | |
6990 | case OP_REVERSE: { | |
e682d7b7 | 6991 | OP *ourmark, *theirmark, *ourlast, *iter, *expushmark, *rv2av; |
ce335f37 | 6992 | OP *gvop = NULL; |
ef3e5ea9 NC |
6993 | LISTOP *enter, *exlist; |
6994 | o->op_opt = 1; | |
6995 | ||
6996 | enter = (LISTOP *) o->op_next; | |
6997 | if (!enter) | |
6998 | break; | |
6999 | if (enter->op_type == OP_NULL) { | |
7000 | enter = (LISTOP *) enter->op_next; | |
7001 | if (!enter) | |
7002 | break; | |
7003 | } | |
d46f46af NC |
7004 | /* for $a (...) will have OP_GV then OP_RV2GV here. |
7005 | for (...) just has an OP_GV. */ | |
ce335f37 NC |
7006 | if (enter->op_type == OP_GV) { |
7007 | gvop = (OP *) enter; | |
7008 | enter = (LISTOP *) enter->op_next; | |
7009 | if (!enter) | |
7010 | break; | |
d46f46af NC |
7011 | if (enter->op_type == OP_RV2GV) { |
7012 | enter = (LISTOP *) enter->op_next; | |
7013 | if (!enter) | |
ce335f37 | 7014 | break; |
d46f46af | 7015 | } |
ce335f37 NC |
7016 | } |
7017 | ||
ef3e5ea9 NC |
7018 | if (enter->op_type != OP_ENTERITER) |
7019 | break; | |
7020 | ||
7021 | iter = enter->op_next; | |
7022 | if (!iter || iter->op_type != OP_ITER) | |
7023 | break; | |
7024 | ||
ce335f37 NC |
7025 | expushmark = enter->op_first; |
7026 | if (!expushmark || expushmark->op_type != OP_NULL | |
7027 | || expushmark->op_targ != OP_PUSHMARK) | |
7028 | break; | |
7029 | ||
7030 | exlist = (LISTOP *) expushmark->op_sibling; | |
ef3e5ea9 NC |
7031 | if (!exlist || exlist->op_type != OP_NULL |
7032 | || exlist->op_targ != OP_LIST) | |
7033 | break; | |
7034 | ||
7035 | if (exlist->op_last != o) { | |
7036 | /* Mmm. Was expecting to point back to this op. */ | |
7037 | break; | |
7038 | } | |
7039 | theirmark = exlist->op_first; | |
7040 | if (!theirmark || theirmark->op_type != OP_PUSHMARK) | |
7041 | break; | |
7042 | ||
c491ecac | 7043 | if (theirmark->op_sibling != o) { |
ef3e5ea9 NC |
7044 | /* There's something between the mark and the reverse, eg |
7045 | for (1, reverse (...)) | |
7046 | so no go. */ | |
7047 | break; | |
7048 | } | |
7049 | ||
c491ecac NC |
7050 | ourmark = ((LISTOP *)o)->op_first; |
7051 | if (!ourmark || ourmark->op_type != OP_PUSHMARK) | |
7052 | break; | |
7053 | ||
ef3e5ea9 NC |
7054 | ourlast = ((LISTOP *)o)->op_last; |
7055 | if (!ourlast || ourlast->op_next != o) | |
7056 | break; | |
7057 | ||
e682d7b7 NC |
7058 | rv2av = ourmark->op_sibling; |
7059 | if (rv2av && rv2av->op_type == OP_RV2AV && rv2av->op_sibling == 0 | |
7060 | && rv2av->op_flags == (OPf_WANT_LIST | OPf_KIDS) | |
7061 | && enter->op_flags == (OPf_WANT_LIST | OPf_KIDS)) { | |
7062 | /* We're just reversing a single array. */ | |
7063 | rv2av->op_flags = OPf_WANT_SCALAR | OPf_KIDS | OPf_REF; | |
7064 | enter->op_flags |= OPf_STACKED; | |
7065 | } | |
7066 | ||
ef3e5ea9 NC |
7067 | /* We don't have control over who points to theirmark, so sacrifice |
7068 | ours. */ | |
7069 | theirmark->op_next = ourmark->op_next; | |
7070 | theirmark->op_flags = ourmark->op_flags; | |
ce335f37 | 7071 | ourlast->op_next = gvop ? gvop : (OP *) enter; |
ef3e5ea9 NC |
7072 | op_null(ourmark); |
7073 | op_null(o); | |
7074 | enter->op_private |= OPpITER_REVERSED; | |
7075 | iter->op_private |= OPpITER_REVERSED; | |
7076 | ||
7077 | break; | |
7078 | } | |
fe1bc4cf | 7079 | |
79072805 | 7080 | default: |
2814eb74 | 7081 | o->op_opt = 1; |
79072805 LW |
7082 | break; |
7083 | } | |
a0d0e21e | 7084 | oldop = o; |
79072805 | 7085 | } |
a0d0e21e | 7086 | LEAVE; |
79072805 | 7087 | } |
beab0874 | 7088 | |
1cb0ed9b RGS |
7089 | char* |
7090 | Perl_custom_op_name(pTHX_ const OP* o) | |
53e06cf0 | 7091 | { |
e1ec3a88 | 7092 | const IV index = PTR2IV(o->op_ppaddr); |
53e06cf0 SC |
7093 | SV* keysv; |
7094 | HE* he; | |
7095 | ||
7096 | if (!PL_custom_op_names) /* This probably shouldn't happen */ | |
27da23d5 | 7097 | return (char *)PL_op_name[OP_CUSTOM]; |
53e06cf0 SC |
7098 | |
7099 | keysv = sv_2mortal(newSViv(index)); | |
7100 | ||
7101 | he = hv_fetch_ent(PL_custom_op_names, keysv, 0, 0); | |
7102 | if (!he) | |
27da23d5 | 7103 | return (char *)PL_op_name[OP_CUSTOM]; /* Don't know who you are */ |
53e06cf0 SC |
7104 | |
7105 | return SvPV_nolen(HeVAL(he)); | |
7106 | } | |
7107 | ||
1cb0ed9b RGS |
7108 | char* |
7109 | Perl_custom_op_desc(pTHX_ const OP* o) | |
53e06cf0 | 7110 | { |
e1ec3a88 | 7111 | const IV index = PTR2IV(o->op_ppaddr); |
53e06cf0 SC |
7112 | SV* keysv; |
7113 | HE* he; | |
7114 | ||
7115 | if (!PL_custom_op_descs) | |
27da23d5 | 7116 | return (char *)PL_op_desc[OP_CUSTOM]; |
53e06cf0 SC |
7117 | |
7118 | keysv = sv_2mortal(newSViv(index)); | |
7119 | ||
7120 | he = hv_fetch_ent(PL_custom_op_descs, keysv, 0, 0); | |
7121 | if (!he) | |
27da23d5 | 7122 | return (char *)PL_op_desc[OP_CUSTOM]; |
53e06cf0 SC |
7123 | |
7124 | return SvPV_nolen(HeVAL(he)); | |
7125 | } | |
19e8ce8e | 7126 | |
beab0874 JT |
7127 | #include "XSUB.h" |
7128 | ||
7129 | /* Efficient sub that returns a constant scalar value. */ | |
7130 | static void | |
acfe0abc | 7131 | const_sv_xsub(pTHX_ CV* cv) |
beab0874 JT |
7132 | { |
7133 | dXSARGS; | |
9cbac4c7 DM |
7134 | if (items != 0) { |
7135 | #if 0 | |
7136 | Perl_croak(aTHX_ "usage: %s::%s()", | |
bfcb3514 | 7137 | HvNAME_get(GvSTASH(CvGV(cv))), GvNAME(CvGV(cv))); |
9cbac4c7 DM |
7138 | #endif |
7139 | } | |
9a049f1c | 7140 | EXTEND(sp, 1); |
0768512c | 7141 | ST(0) = (SV*)XSANY.any_ptr; |
beab0874 JT |
7142 | XSRETURN(1); |
7143 | } | |
4946a0fa NC |
7144 | |
7145 | /* | |
7146 | * Local variables: | |
7147 | * c-indentation-style: bsd | |
7148 | * c-basic-offset: 4 | |
7149 | * indent-tabs-mode: t | |
7150 | * End: | |
7151 | * | |
37442d52 RGS |
7152 | * ex: set ts=8 sts=4 sw=4 noet: |
7153 | */ |