Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* op.c |
79072805 | 2 | * |
4bb101f2 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
acde74e1 | 4 | * 2000, 2001, 2002, 2003, 2004, 2005, 2006, 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 | /* |
ce6f1cbc | 149 | * In the following definition, the ", (OP*)0" 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) \ |
ce6f1cbc | 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]), \ |
ce6f1cbc | 156 | (OP*)0 ) \ |
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(); |
bd61b366 | 165 | gv_efullname3(tmpsv, gv, NULL); |
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 | { |
97aff369 | 211 | dVAR; |
a0d0e21e | 212 | PADOFFSET off; |
3edf23ff | 213 | const bool is_our = (PL_in_my == KEY_our); |
a0d0e21e | 214 | |
59f00321 | 215 | /* complain about "my $<special_var>" etc etc */ |
6b58708b | 216 | if (*name && |
3edf23ff | 217 | !(is_our || |
155aba94 | 218 | isALPHA(name[1]) || |
39e02b42 | 219 | (USE_UTF8_IN_NAMES && UTF8_IS_START(name[1])) || |
6b58708b | 220 | (name[1] == '_' && (*name == '$' || name[2])))) |
834a4ddd | 221 | { |
6b58708b | 222 | /* name[2] is true if strlen(name) > 2 */ |
c4d0567e | 223 | if (!isPRINT(name[1]) || strchr("\t\n\r\f", name[1])) { |
2b92dfce GS |
224 | /* 1999-02-27 mjd@plover.com */ |
225 | char *p; | |
226 | p = strchr(name, '\0'); | |
227 | /* The next block assumes the buffer is at least 205 chars | |
228 | long. At present, it's always at least 256 chars. */ | |
229 | if (p-name > 200) { | |
230 | strcpy(name+200, "..."); | |
231 | p = name+199; | |
232 | } | |
233 | else { | |
234 | p[1] = '\0'; | |
235 | } | |
236 | /* Move everything else down one character */ | |
237 | for (; p-name > 2; p--) | |
238 | *p = *(p-1); | |
46fc3d4c | 239 | name[2] = toCTRL(name[1]); |
240 | name[1] = '^'; | |
241 | } | |
cea2e8a9 | 242 | yyerror(Perl_form(aTHX_ "Can't use global %s in \"my\"",name)); |
a0d0e21e | 243 | } |
748a9306 | 244 | |
dd2155a4 | 245 | /* check for duplicate declaration */ |
3edf23ff | 246 | pad_check_dup(name, is_our, (PL_curstash ? PL_curstash : PL_defstash)); |
33b8ce05 | 247 | |
dd2155a4 DM |
248 | if (PL_in_my_stash && *name != '$') { |
249 | yyerror(Perl_form(aTHX_ | |
250 | "Can't declare class for non-scalar %s in \"%s\"", | |
3edf23ff | 251 | name, is_our ? "our" : "my")); |
6b35e009 GS |
252 | } |
253 | ||
dd2155a4 | 254 | /* allocate a spare slot and store the name in that slot */ |
93a17b20 | 255 | |
dd2155a4 DM |
256 | off = pad_add_name(name, |
257 | PL_in_my_stash, | |
3edf23ff | 258 | (is_our |
133706a6 RGS |
259 | /* $_ is always in main::, even with our */ |
260 | ? (PL_curstash && !strEQ(name,"$_") ? PL_curstash : PL_defstash) | |
5c284bb0 | 261 | : NULL |
dd2155a4 DM |
262 | ), |
263 | 0 /* not fake */ | |
264 | ); | |
265 | return off; | |
79072805 LW |
266 | } |
267 | ||
79072805 LW |
268 | /* Destructor */ |
269 | ||
270 | void | |
864dbfa3 | 271 | Perl_op_free(pTHX_ OP *o) |
79072805 | 272 | { |
27da23d5 | 273 | dVAR; |
acb36ea4 | 274 | OPCODE type; |
4026c95a | 275 | PADOFFSET refcnt; |
79072805 | 276 | |
2814eb74 | 277 | if (!o || o->op_static) |
79072805 LW |
278 | return; |
279 | ||
7934575e GS |
280 | if (o->op_private & OPpREFCOUNTED) { |
281 | switch (o->op_type) { | |
282 | case OP_LEAVESUB: | |
283 | case OP_LEAVESUBLV: | |
284 | case OP_LEAVEEVAL: | |
285 | case OP_LEAVE: | |
286 | case OP_SCOPE: | |
287 | case OP_LEAVEWRITE: | |
288 | OP_REFCNT_LOCK; | |
4026c95a | 289 | refcnt = OpREFCNT_dec(o); |
7934575e | 290 | OP_REFCNT_UNLOCK; |
4026c95a SH |
291 | if (refcnt) |
292 | return; | |
7934575e GS |
293 | break; |
294 | default: | |
295 | break; | |
296 | } | |
297 | } | |
298 | ||
11343788 | 299 | if (o->op_flags & OPf_KIDS) { |
6867be6d | 300 | register OP *kid, *nextkid; |
11343788 | 301 | for (kid = cUNOPo->op_first; kid; kid = nextkid) { |
85e6fe83 | 302 | nextkid = kid->op_sibling; /* Get before next freeing kid */ |
79072805 | 303 | op_free(kid); |
85e6fe83 | 304 | } |
79072805 | 305 | } |
acb36ea4 GS |
306 | type = o->op_type; |
307 | if (type == OP_NULL) | |
eb160463 | 308 | type = (OPCODE)o->op_targ; |
acb36ea4 GS |
309 | |
310 | /* COP* is not cleared by op_clear() so that we may track line | |
311 | * numbers etc even after null() */ | |
312 | if (type == OP_NEXTSTATE || type == OP_SETSTATE || type == OP_DBSTATE) | |
313 | cop_free((COP*)o); | |
314 | ||
315 | op_clear(o); | |
238a4c30 | 316 | FreeOp(o); |
4d494880 DM |
317 | #ifdef DEBUG_LEAKING_SCALARS |
318 | if (PL_op == o) | |
5f66b61c | 319 | PL_op = NULL; |
4d494880 | 320 | #endif |
acb36ea4 | 321 | } |
79072805 | 322 | |
93c66552 DM |
323 | void |
324 | Perl_op_clear(pTHX_ OP *o) | |
acb36ea4 | 325 | { |
13137afc | 326 | |
27da23d5 | 327 | dVAR; |
11343788 | 328 | switch (o->op_type) { |
acb36ea4 GS |
329 | case OP_NULL: /* Was holding old type, if any. */ |
330 | case OP_ENTEREVAL: /* Was holding hints. */ | |
acb36ea4 | 331 | o->op_targ = 0; |
a0d0e21e | 332 | break; |
a6006777 | 333 | default: |
ac4c12e7 | 334 | if (!(o->op_flags & OPf_REF) |
0b94c7bb | 335 | || (PL_check[o->op_type] != MEMBER_TO_FPTR(Perl_ck_ftst))) |
a6006777 | 336 | break; |
337 | /* FALL THROUGH */ | |
463ee0b2 | 338 | case OP_GVSV: |
79072805 | 339 | case OP_GV: |
a6006777 | 340 | case OP_AELEMFAST: |
6a077020 DM |
341 | if (! (o->op_type == OP_AELEMFAST && o->op_flags & OPf_SPECIAL)) { |
342 | /* not an OP_PADAV replacement */ | |
350de78d | 343 | #ifdef USE_ITHREADS |
6a077020 DM |
344 | if (cPADOPo->op_padix > 0) { |
345 | /* No GvIN_PAD_off(cGVOPo_gv) here, because other references | |
346 | * may still exist on the pad */ | |
347 | pad_swipe(cPADOPo->op_padix, TRUE); | |
348 | cPADOPo->op_padix = 0; | |
349 | } | |
350de78d | 350 | #else |
6a077020 | 351 | SvREFCNT_dec(cSVOPo->op_sv); |
a0714e2c | 352 | cSVOPo->op_sv = NULL; |
350de78d | 353 | #endif |
6a077020 | 354 | } |
79072805 | 355 | break; |
a1ae71d2 | 356 | case OP_METHOD_NAMED: |
79072805 | 357 | case OP_CONST: |
11343788 | 358 | SvREFCNT_dec(cSVOPo->op_sv); |
a0714e2c | 359 | cSVOPo->op_sv = NULL; |
3b1c21fa AB |
360 | #ifdef USE_ITHREADS |
361 | /** Bug #15654 | |
362 | Even if op_clear does a pad_free for the target of the op, | |
6a077020 | 363 | pad_free doesn't actually remove the sv that exists in the pad; |
3b1c21fa AB |
364 | instead it lives on. This results in that it could be reused as |
365 | a target later on when the pad was reallocated. | |
366 | **/ | |
367 | if(o->op_targ) { | |
368 | pad_swipe(o->op_targ,1); | |
369 | o->op_targ = 0; | |
370 | } | |
371 | #endif | |
79072805 | 372 | break; |
748a9306 LW |
373 | case OP_GOTO: |
374 | case OP_NEXT: | |
375 | case OP_LAST: | |
376 | case OP_REDO: | |
11343788 | 377 | if (o->op_flags & (OPf_SPECIAL|OPf_STACKED|OPf_KIDS)) |
748a9306 LW |
378 | break; |
379 | /* FALL THROUGH */ | |
a0d0e21e | 380 | case OP_TRANS: |
acb36ea4 | 381 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { |
a0ed51b3 | 382 | SvREFCNT_dec(cSVOPo->op_sv); |
a0714e2c | 383 | cSVOPo->op_sv = NULL; |
acb36ea4 GS |
384 | } |
385 | else { | |
a0ed51b3 | 386 | Safefree(cPVOPo->op_pv); |
bd61b366 | 387 | cPVOPo->op_pv = NULL; |
acb36ea4 | 388 | } |
a0d0e21e LW |
389 | break; |
390 | case OP_SUBST: | |
11343788 | 391 | op_free(cPMOPo->op_pmreplroot); |
971a9dd3 | 392 | goto clear_pmop; |
748a9306 | 393 | case OP_PUSHRE: |
971a9dd3 | 394 | #ifdef USE_ITHREADS |
ba89bb6e | 395 | if (INT2PTR(PADOFFSET, cPMOPo->op_pmreplroot)) { |
dd2155a4 DM |
396 | /* No GvIN_PAD_off here, because other references may still |
397 | * exist on the pad */ | |
398 | pad_swipe(INT2PTR(PADOFFSET, cPMOPo->op_pmreplroot), TRUE); | |
971a9dd3 GS |
399 | } |
400 | #else | |
401 | SvREFCNT_dec((SV*)cPMOPo->op_pmreplroot); | |
402 | #endif | |
403 | /* FALL THROUGH */ | |
a0d0e21e | 404 | case OP_MATCH: |
8782bef2 | 405 | case OP_QR: |
971a9dd3 | 406 | clear_pmop: |
cb55de95 | 407 | { |
551405c4 | 408 | HV * const pmstash = PmopSTASH(cPMOPo); |
0565a181 | 409 | if (pmstash && !SvIS_FREED(pmstash)) { |
551405c4 | 410 | MAGIC * const mg = mg_find((SV*)pmstash, PERL_MAGIC_symtab); |
8d2f4536 NC |
411 | if (mg) { |
412 | PMOP *pmop = (PMOP*) mg->mg_obj; | |
413 | PMOP *lastpmop = NULL; | |
414 | while (pmop) { | |
415 | if (cPMOPo == pmop) { | |
416 | if (lastpmop) | |
417 | lastpmop->op_pmnext = pmop->op_pmnext; | |
418 | else | |
419 | mg->mg_obj = (SV*) pmop->op_pmnext; | |
420 | break; | |
421 | } | |
422 | lastpmop = pmop; | |
423 | pmop = pmop->op_pmnext; | |
cb55de95 | 424 | } |
cb55de95 | 425 | } |
83da49e6 | 426 | } |
05ec9bb3 | 427 | PmopSTASH_free(cPMOPo); |
cb55de95 | 428 | } |
5f66b61c | 429 | cPMOPo->op_pmreplroot = NULL; |
5f8cb046 DM |
430 | /* we use the "SAFE" version of the PM_ macros here |
431 | * since sv_clean_all might release some PMOPs | |
432 | * after PL_regex_padav has been cleared | |
433 | * and the clearing of PL_regex_padav needs to | |
434 | * happen before sv_clean_all | |
435 | */ | |
436 | ReREFCNT_dec(PM_GETRE_SAFE(cPMOPo)); | |
5f66b61c | 437 | PM_SETRE_SAFE(cPMOPo, NULL); |
13137afc AB |
438 | #ifdef USE_ITHREADS |
439 | if(PL_regex_pad) { /* We could be in destruction */ | |
440 | av_push((AV*) PL_regex_pad[0],(SV*) PL_regex_pad[(cPMOPo)->op_pmoffset]); | |
1cc8b4c5 | 441 | SvREPADTMP_on(PL_regex_pad[(cPMOPo)->op_pmoffset]); |
13137afc AB |
442 | PM_SETRE(cPMOPo, (cPMOPo)->op_pmoffset); |
443 | } | |
1eb1540c | 444 | #endif |
13137afc | 445 | |
a0d0e21e | 446 | break; |
79072805 LW |
447 | } |
448 | ||
743e66e6 | 449 | if (o->op_targ > 0) { |
11343788 | 450 | pad_free(o->op_targ); |
743e66e6 GS |
451 | o->op_targ = 0; |
452 | } | |
79072805 LW |
453 | } |
454 | ||
76e3520e | 455 | STATIC void |
3eb57f73 HS |
456 | S_cop_free(pTHX_ COP* cop) |
457 | { | |
05ec9bb3 NIS |
458 | Safefree(cop->cop_label); /* FIXME: treaddead ??? */ |
459 | CopFILE_free(cop); | |
460 | CopSTASH_free(cop); | |
0453d815 | 461 | if (! specialWARN(cop->cop_warnings)) |
3eb57f73 | 462 | SvREFCNT_dec(cop->cop_warnings); |
05ec9bb3 NIS |
463 | if (! specialCopIO(cop->cop_io)) { |
464 | #ifdef USE_ITHREADS | |
bb263b4e | 465 | /*EMPTY*/ |
05ec9bb3 | 466 | #else |
ac27b0f5 | 467 | SvREFCNT_dec(cop->cop_io); |
05ec9bb3 NIS |
468 | #endif |
469 | } | |
3eb57f73 HS |
470 | } |
471 | ||
93c66552 DM |
472 | void |
473 | Perl_op_null(pTHX_ OP *o) | |
8990e307 | 474 | { |
27da23d5 | 475 | dVAR; |
acb36ea4 GS |
476 | if (o->op_type == OP_NULL) |
477 | return; | |
478 | op_clear(o); | |
11343788 MB |
479 | o->op_targ = o->op_type; |
480 | o->op_type = OP_NULL; | |
22c35a8c | 481 | o->op_ppaddr = PL_ppaddr[OP_NULL]; |
8990e307 LW |
482 | } |
483 | ||
4026c95a SH |
484 | void |
485 | Perl_op_refcnt_lock(pTHX) | |
486 | { | |
27da23d5 | 487 | dVAR; |
4026c95a SH |
488 | OP_REFCNT_LOCK; |
489 | } | |
490 | ||
491 | void | |
492 | Perl_op_refcnt_unlock(pTHX) | |
493 | { | |
27da23d5 | 494 | dVAR; |
4026c95a SH |
495 | OP_REFCNT_UNLOCK; |
496 | } | |
497 | ||
79072805 LW |
498 | /* Contextualizers */ |
499 | ||
463ee0b2 | 500 | #define LINKLIST(o) ((o)->op_next ? (o)->op_next : linklist((OP*)o)) |
79072805 LW |
501 | |
502 | OP * | |
864dbfa3 | 503 | Perl_linklist(pTHX_ OP *o) |
79072805 | 504 | { |
3edf23ff | 505 | OP *first; |
79072805 | 506 | |
11343788 MB |
507 | if (o->op_next) |
508 | return o->op_next; | |
79072805 LW |
509 | |
510 | /* establish postfix order */ | |
3edf23ff AL |
511 | first = cUNOPo->op_first; |
512 | if (first) { | |
6867be6d | 513 | register OP *kid; |
3edf23ff AL |
514 | o->op_next = LINKLIST(first); |
515 | kid = first; | |
516 | for (;;) { | |
517 | if (kid->op_sibling) { | |
79072805 | 518 | kid->op_next = LINKLIST(kid->op_sibling); |
3edf23ff AL |
519 | kid = kid->op_sibling; |
520 | } else { | |
11343788 | 521 | kid->op_next = o; |
3edf23ff AL |
522 | break; |
523 | } | |
79072805 LW |
524 | } |
525 | } | |
526 | else | |
11343788 | 527 | o->op_next = o; |
79072805 | 528 | |
11343788 | 529 | return o->op_next; |
79072805 LW |
530 | } |
531 | ||
532 | OP * | |
864dbfa3 | 533 | Perl_scalarkids(pTHX_ OP *o) |
79072805 | 534 | { |
11343788 | 535 | if (o && o->op_flags & OPf_KIDS) { |
bfed75c6 | 536 | OP *kid; |
11343788 | 537 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
538 | scalar(kid); |
539 | } | |
11343788 | 540 | return o; |
79072805 LW |
541 | } |
542 | ||
76e3520e | 543 | STATIC OP * |
cea2e8a9 | 544 | S_scalarboolean(pTHX_ OP *o) |
8990e307 | 545 | { |
97aff369 | 546 | dVAR; |
d008e5eb | 547 | if (o->op_type == OP_SASSIGN && cBINOPo->op_first->op_type == OP_CONST) { |
d008e5eb | 548 | if (ckWARN(WARN_SYNTAX)) { |
6867be6d | 549 | const line_t oldline = CopLINE(PL_curcop); |
a0d0e21e | 550 | |
d008e5eb | 551 | if (PL_copline != NOLINE) |
57843af0 | 552 | CopLINE_set(PL_curcop, PL_copline); |
9014280d | 553 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Found = in conditional, should be =="); |
57843af0 | 554 | CopLINE_set(PL_curcop, oldline); |
d008e5eb | 555 | } |
a0d0e21e | 556 | } |
11343788 | 557 | return scalar(o); |
8990e307 LW |
558 | } |
559 | ||
560 | OP * | |
864dbfa3 | 561 | Perl_scalar(pTHX_ OP *o) |
79072805 | 562 | { |
27da23d5 | 563 | dVAR; |
79072805 LW |
564 | OP *kid; |
565 | ||
a0d0e21e | 566 | /* assumes no premature commitment */ |
551405c4 | 567 | if (!o || PL_error_count || (o->op_flags & OPf_WANT) |
5dc0d613 | 568 | || o->op_type == OP_RETURN) |
7e363e51 | 569 | { |
11343788 | 570 | return o; |
7e363e51 | 571 | } |
79072805 | 572 | |
5dc0d613 | 573 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_SCALAR; |
79072805 | 574 | |
11343788 | 575 | switch (o->op_type) { |
79072805 | 576 | case OP_REPEAT: |
11343788 | 577 | scalar(cBINOPo->op_first); |
8990e307 | 578 | break; |
79072805 LW |
579 | case OP_OR: |
580 | case OP_AND: | |
581 | case OP_COND_EXPR: | |
11343788 | 582 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
8990e307 | 583 | scalar(kid); |
79072805 | 584 | break; |
a0d0e21e | 585 | case OP_SPLIT: |
11343788 | 586 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e | 587 | if (!kPMOP->op_pmreplroot) |
12bcd1a6 | 588 | deprecate_old("implicit split to @_"); |
a0d0e21e LW |
589 | } |
590 | /* FALL THROUGH */ | |
79072805 | 591 | case OP_MATCH: |
8782bef2 | 592 | case OP_QR: |
79072805 LW |
593 | case OP_SUBST: |
594 | case OP_NULL: | |
8990e307 | 595 | default: |
11343788 MB |
596 | if (o->op_flags & OPf_KIDS) { |
597 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) | |
8990e307 LW |
598 | scalar(kid); |
599 | } | |
79072805 LW |
600 | break; |
601 | case OP_LEAVE: | |
602 | case OP_LEAVETRY: | |
5dc0d613 | 603 | kid = cLISTOPo->op_first; |
54310121 | 604 | scalar(kid); |
155aba94 | 605 | while ((kid = kid->op_sibling)) { |
54310121 | 606 | if (kid->op_sibling) |
607 | scalarvoid(kid); | |
608 | else | |
609 | scalar(kid); | |
610 | } | |
3280af22 | 611 | WITH_THR(PL_curcop = &PL_compiling); |
54310121 | 612 | break; |
748a9306 | 613 | case OP_SCOPE: |
79072805 | 614 | case OP_LINESEQ: |
8990e307 | 615 | case OP_LIST: |
11343788 | 616 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
617 | if (kid->op_sibling) |
618 | scalarvoid(kid); | |
619 | else | |
620 | scalar(kid); | |
621 | } | |
3280af22 | 622 | WITH_THR(PL_curcop = &PL_compiling); |
79072805 | 623 | break; |
a801c63c RGS |
624 | case OP_SORT: |
625 | if (ckWARN(WARN_VOID)) | |
9014280d | 626 | Perl_warner(aTHX_ packWARN(WARN_VOID), "Useless use of sort in scalar context"); |
79072805 | 627 | } |
11343788 | 628 | return o; |
79072805 LW |
629 | } |
630 | ||
631 | OP * | |
864dbfa3 | 632 | Perl_scalarvoid(pTHX_ OP *o) |
79072805 | 633 | { |
27da23d5 | 634 | dVAR; |
79072805 | 635 | OP *kid; |
c445ea15 | 636 | const char* useless = NULL; |
8990e307 | 637 | SV* sv; |
2ebea0a1 GS |
638 | U8 want; |
639 | ||
acb36ea4 GS |
640 | if (o->op_type == OP_NEXTSTATE |
641 | || o->op_type == OP_SETSTATE | |
642 | || o->op_type == OP_DBSTATE | |
643 | || (o->op_type == OP_NULL && (o->op_targ == OP_NEXTSTATE | |
644 | || o->op_targ == OP_SETSTATE | |
645 | || o->op_targ == OP_DBSTATE))) | |
2ebea0a1 | 646 | PL_curcop = (COP*)o; /* for warning below */ |
79072805 | 647 | |
54310121 | 648 | /* assumes no premature commitment */ |
2ebea0a1 GS |
649 | want = o->op_flags & OPf_WANT; |
650 | if ((want && want != OPf_WANT_SCALAR) || PL_error_count | |
5dc0d613 | 651 | || o->op_type == OP_RETURN) |
7e363e51 | 652 | { |
11343788 | 653 | return o; |
7e363e51 | 654 | } |
79072805 | 655 | |
b162f9ea | 656 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
657 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
658 | { | |
b162f9ea | 659 | return scalar(o); /* As if inside SASSIGN */ |
7e363e51 | 660 | } |
1c846c1f | 661 | |
5dc0d613 | 662 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_VOID; |
79072805 | 663 | |
11343788 | 664 | switch (o->op_type) { |
79072805 | 665 | default: |
22c35a8c | 666 | if (!(PL_opargs[o->op_type] & OA_FOLDCONST)) |
8990e307 | 667 | break; |
36477c24 | 668 | /* FALL THROUGH */ |
669 | case OP_REPEAT: | |
11343788 | 670 | if (o->op_flags & OPf_STACKED) |
8990e307 | 671 | break; |
5d82c453 GA |
672 | goto func_ops; |
673 | case OP_SUBSTR: | |
674 | if (o->op_private == 4) | |
675 | break; | |
8990e307 LW |
676 | /* FALL THROUGH */ |
677 | case OP_GVSV: | |
678 | case OP_WANTARRAY: | |
679 | case OP_GV: | |
680 | case OP_PADSV: | |
681 | case OP_PADAV: | |
682 | case OP_PADHV: | |
683 | case OP_PADANY: | |
684 | case OP_AV2ARYLEN: | |
8990e307 | 685 | case OP_REF: |
a0d0e21e LW |
686 | case OP_REFGEN: |
687 | case OP_SREFGEN: | |
8990e307 LW |
688 | case OP_DEFINED: |
689 | case OP_HEX: | |
690 | case OP_OCT: | |
691 | case OP_LENGTH: | |
8990e307 LW |
692 | case OP_VEC: |
693 | case OP_INDEX: | |
694 | case OP_RINDEX: | |
695 | case OP_SPRINTF: | |
696 | case OP_AELEM: | |
697 | case OP_AELEMFAST: | |
698 | case OP_ASLICE: | |
8990e307 LW |
699 | case OP_HELEM: |
700 | case OP_HSLICE: | |
701 | case OP_UNPACK: | |
702 | case OP_PACK: | |
8990e307 LW |
703 | case OP_JOIN: |
704 | case OP_LSLICE: | |
705 | case OP_ANONLIST: | |
706 | case OP_ANONHASH: | |
707 | case OP_SORT: | |
708 | case OP_REVERSE: | |
709 | case OP_RANGE: | |
710 | case OP_FLIP: | |
711 | case OP_FLOP: | |
712 | case OP_CALLER: | |
713 | case OP_FILENO: | |
714 | case OP_EOF: | |
715 | case OP_TELL: | |
716 | case OP_GETSOCKNAME: | |
717 | case OP_GETPEERNAME: | |
718 | case OP_READLINK: | |
719 | case OP_TELLDIR: | |
720 | case OP_GETPPID: | |
721 | case OP_GETPGRP: | |
722 | case OP_GETPRIORITY: | |
723 | case OP_TIME: | |
724 | case OP_TMS: | |
725 | case OP_LOCALTIME: | |
726 | case OP_GMTIME: | |
727 | case OP_GHBYNAME: | |
728 | case OP_GHBYADDR: | |
729 | case OP_GHOSTENT: | |
730 | case OP_GNBYNAME: | |
731 | case OP_GNBYADDR: | |
732 | case OP_GNETENT: | |
733 | case OP_GPBYNAME: | |
734 | case OP_GPBYNUMBER: | |
735 | case OP_GPROTOENT: | |
736 | case OP_GSBYNAME: | |
737 | case OP_GSBYPORT: | |
738 | case OP_GSERVENT: | |
739 | case OP_GPWNAM: | |
740 | case OP_GPWUID: | |
741 | case OP_GGRNAM: | |
742 | case OP_GGRGID: | |
743 | case OP_GETLOGIN: | |
78e1b766 | 744 | case OP_PROTOTYPE: |
5d82c453 | 745 | func_ops: |
64aac5a9 | 746 | if (!(o->op_private & (OPpLVAL_INTRO|OPpOUR_INTRO))) |
53e06cf0 | 747 | useless = OP_DESC(o); |
8990e307 LW |
748 | break; |
749 | ||
9f82cd5f YST |
750 | case OP_NOT: |
751 | kid = cUNOPo->op_first; | |
752 | if (kid->op_type != OP_MATCH && kid->op_type != OP_SUBST && | |
753 | kid->op_type != OP_TRANS) { | |
754 | goto func_ops; | |
755 | } | |
756 | useless = "negative pattern binding (!~)"; | |
757 | break; | |
758 | ||
8990e307 LW |
759 | case OP_RV2GV: |
760 | case OP_RV2SV: | |
761 | case OP_RV2AV: | |
762 | case OP_RV2HV: | |
192587c2 | 763 | if (!(o->op_private & (OPpLVAL_INTRO|OPpOUR_INTRO)) && |
11343788 | 764 | (!o->op_sibling || o->op_sibling->op_type != OP_READLINE)) |
8990e307 LW |
765 | useless = "a variable"; |
766 | break; | |
79072805 LW |
767 | |
768 | case OP_CONST: | |
7766f137 | 769 | sv = cSVOPo_sv; |
7a52d87a GS |
770 | if (cSVOPo->op_private & OPpCONST_STRICT) |
771 | no_bareword_allowed(o); | |
772 | else { | |
d008e5eb GS |
773 | if (ckWARN(WARN_VOID)) { |
774 | useless = "a constant"; | |
e7fec78e | 775 | /* don't warn on optimised away booleans, eg |
b5a930ec | 776 | * use constant Foo, 5; Foo || print; */ |
e7fec78e DM |
777 | if (cSVOPo->op_private & OPpCONST_SHORTCIRCUIT) |
778 | useless = 0; | |
960b4253 MG |
779 | /* the constants 0 and 1 are permitted as they are |
780 | conventionally used as dummies in constructs like | |
781 | 1 while some_condition_with_side_effects; */ | |
e7fec78e | 782 | else if (SvNIOK(sv) && (SvNV(sv) == 0.0 || SvNV(sv) == 1.0)) |
d008e5eb GS |
783 | useless = 0; |
784 | else if (SvPOK(sv)) { | |
a52fe3ac A |
785 | /* perl4's way of mixing documentation and code |
786 | (before the invention of POD) was based on a | |
787 | trick to mix nroff and perl code. The trick was | |
788 | built upon these three nroff macros being used in | |
789 | void context. The pink camel has the details in | |
790 | the script wrapman near page 319. */ | |
6136c704 AL |
791 | const char * const maybe_macro = SvPVX_const(sv); |
792 | if (strnEQ(maybe_macro, "di", 2) || | |
793 | strnEQ(maybe_macro, "ds", 2) || | |
794 | strnEQ(maybe_macro, "ig", 2)) | |
d008e5eb GS |
795 | useless = 0; |
796 | } | |
8990e307 LW |
797 | } |
798 | } | |
93c66552 | 799 | op_null(o); /* don't execute or even remember it */ |
79072805 LW |
800 | break; |
801 | ||
802 | case OP_POSTINC: | |
11343788 | 803 | o->op_type = OP_PREINC; /* pre-increment is faster */ |
22c35a8c | 804 | o->op_ppaddr = PL_ppaddr[OP_PREINC]; |
79072805 LW |
805 | break; |
806 | ||
807 | case OP_POSTDEC: | |
11343788 | 808 | o->op_type = OP_PREDEC; /* pre-decrement is faster */ |
22c35a8c | 809 | o->op_ppaddr = PL_ppaddr[OP_PREDEC]; |
79072805 LW |
810 | break; |
811 | ||
679d6c4e HS |
812 | case OP_I_POSTINC: |
813 | o->op_type = OP_I_PREINC; /* pre-increment is faster */ | |
814 | o->op_ppaddr = PL_ppaddr[OP_I_PREINC]; | |
815 | break; | |
816 | ||
817 | case OP_I_POSTDEC: | |
818 | o->op_type = OP_I_PREDEC; /* pre-decrement is faster */ | |
819 | o->op_ppaddr = PL_ppaddr[OP_I_PREDEC]; | |
820 | break; | |
821 | ||
79072805 LW |
822 | case OP_OR: |
823 | case OP_AND: | |
c963b151 | 824 | case OP_DOR: |
79072805 | 825 | case OP_COND_EXPR: |
0d863452 RH |
826 | case OP_ENTERGIVEN: |
827 | case OP_ENTERWHEN: | |
11343788 | 828 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
829 | scalarvoid(kid); |
830 | break; | |
5aabfad6 | 831 | |
a0d0e21e | 832 | case OP_NULL: |
11343788 | 833 | if (o->op_flags & OPf_STACKED) |
a0d0e21e | 834 | break; |
5aabfad6 | 835 | /* FALL THROUGH */ |
2ebea0a1 GS |
836 | case OP_NEXTSTATE: |
837 | case OP_DBSTATE: | |
79072805 LW |
838 | case OP_ENTERTRY: |
839 | case OP_ENTER: | |
11343788 | 840 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 841 | break; |
54310121 | 842 | /* FALL THROUGH */ |
463ee0b2 | 843 | case OP_SCOPE: |
79072805 LW |
844 | case OP_LEAVE: |
845 | case OP_LEAVETRY: | |
a0d0e21e | 846 | case OP_LEAVELOOP: |
79072805 | 847 | case OP_LINESEQ: |
79072805 | 848 | case OP_LIST: |
0d863452 RH |
849 | case OP_LEAVEGIVEN: |
850 | case OP_LEAVEWHEN: | |
11343788 | 851 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
852 | scalarvoid(kid); |
853 | break; | |
c90c0ff4 | 854 | case OP_ENTEREVAL: |
5196be3e | 855 | scalarkids(o); |
c90c0ff4 | 856 | break; |
5aabfad6 | 857 | case OP_REQUIRE: |
c90c0ff4 | 858 | /* all requires must return a boolean value */ |
5196be3e | 859 | o->op_flags &= ~OPf_WANT; |
d6483035 GS |
860 | /* FALL THROUGH */ |
861 | case OP_SCALAR: | |
5196be3e | 862 | return scalar(o); |
a0d0e21e | 863 | case OP_SPLIT: |
11343788 | 864 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e | 865 | if (!kPMOP->op_pmreplroot) |
12bcd1a6 | 866 | deprecate_old("implicit split to @_"); |
a0d0e21e LW |
867 | } |
868 | break; | |
79072805 | 869 | } |
411caa50 | 870 | if (useless && ckWARN(WARN_VOID)) |
9014280d | 871 | Perl_warner(aTHX_ packWARN(WARN_VOID), "Useless use of %s in void context", useless); |
11343788 | 872 | return o; |
79072805 LW |
873 | } |
874 | ||
875 | OP * | |
864dbfa3 | 876 | Perl_listkids(pTHX_ OP *o) |
79072805 | 877 | { |
11343788 | 878 | if (o && o->op_flags & OPf_KIDS) { |
6867be6d | 879 | OP *kid; |
11343788 | 880 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
881 | list(kid); |
882 | } | |
11343788 | 883 | return o; |
79072805 LW |
884 | } |
885 | ||
886 | OP * | |
864dbfa3 | 887 | Perl_list(pTHX_ OP *o) |
79072805 | 888 | { |
27da23d5 | 889 | dVAR; |
79072805 LW |
890 | OP *kid; |
891 | ||
a0d0e21e | 892 | /* assumes no premature commitment */ |
3280af22 | 893 | if (!o || (o->op_flags & OPf_WANT) || PL_error_count |
5dc0d613 | 894 | || o->op_type == OP_RETURN) |
7e363e51 | 895 | { |
11343788 | 896 | return o; |
7e363e51 | 897 | } |
79072805 | 898 | |
b162f9ea | 899 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
900 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
901 | { | |
b162f9ea | 902 | return o; /* As if inside SASSIGN */ |
7e363e51 | 903 | } |
1c846c1f | 904 | |
5dc0d613 | 905 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_LIST; |
79072805 | 906 | |
11343788 | 907 | switch (o->op_type) { |
79072805 LW |
908 | case OP_FLOP: |
909 | case OP_REPEAT: | |
11343788 | 910 | list(cBINOPo->op_first); |
79072805 LW |
911 | break; |
912 | case OP_OR: | |
913 | case OP_AND: | |
914 | case OP_COND_EXPR: | |
11343788 | 915 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
916 | list(kid); |
917 | break; | |
918 | default: | |
919 | case OP_MATCH: | |
8782bef2 | 920 | case OP_QR: |
79072805 LW |
921 | case OP_SUBST: |
922 | case OP_NULL: | |
11343788 | 923 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 924 | break; |
11343788 MB |
925 | if (!o->op_next && cUNOPo->op_first->op_type == OP_FLOP) { |
926 | list(cBINOPo->op_first); | |
927 | return gen_constant_list(o); | |
79072805 LW |
928 | } |
929 | case OP_LIST: | |
11343788 | 930 | listkids(o); |
79072805 LW |
931 | break; |
932 | case OP_LEAVE: | |
933 | case OP_LEAVETRY: | |
5dc0d613 | 934 | kid = cLISTOPo->op_first; |
54310121 | 935 | list(kid); |
155aba94 | 936 | while ((kid = kid->op_sibling)) { |
54310121 | 937 | if (kid->op_sibling) |
938 | scalarvoid(kid); | |
939 | else | |
940 | list(kid); | |
941 | } | |
3280af22 | 942 | WITH_THR(PL_curcop = &PL_compiling); |
54310121 | 943 | break; |
748a9306 | 944 | case OP_SCOPE: |
79072805 | 945 | case OP_LINESEQ: |
11343788 | 946 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
947 | if (kid->op_sibling) |
948 | scalarvoid(kid); | |
949 | else | |
950 | list(kid); | |
951 | } | |
3280af22 | 952 | WITH_THR(PL_curcop = &PL_compiling); |
79072805 | 953 | break; |
c90c0ff4 | 954 | case OP_REQUIRE: |
955 | /* all requires must return a boolean value */ | |
5196be3e MB |
956 | o->op_flags &= ~OPf_WANT; |
957 | return scalar(o); | |
79072805 | 958 | } |
11343788 | 959 | return o; |
79072805 LW |
960 | } |
961 | ||
962 | OP * | |
864dbfa3 | 963 | Perl_scalarseq(pTHX_ OP *o) |
79072805 | 964 | { |
97aff369 | 965 | dVAR; |
11343788 MB |
966 | if (o) { |
967 | if (o->op_type == OP_LINESEQ || | |
968 | o->op_type == OP_SCOPE || | |
969 | o->op_type == OP_LEAVE || | |
970 | o->op_type == OP_LEAVETRY) | |
463ee0b2 | 971 | { |
6867be6d | 972 | OP *kid; |
11343788 | 973 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
ed6116ce | 974 | if (kid->op_sibling) { |
463ee0b2 | 975 | scalarvoid(kid); |
ed6116ce | 976 | } |
463ee0b2 | 977 | } |
3280af22 | 978 | PL_curcop = &PL_compiling; |
79072805 | 979 | } |
11343788 | 980 | o->op_flags &= ~OPf_PARENS; |
3280af22 | 981 | if (PL_hints & HINT_BLOCK_SCOPE) |
11343788 | 982 | o->op_flags |= OPf_PARENS; |
79072805 | 983 | } |
8990e307 | 984 | else |
11343788 MB |
985 | o = newOP(OP_STUB, 0); |
986 | return o; | |
79072805 LW |
987 | } |
988 | ||
76e3520e | 989 | STATIC OP * |
cea2e8a9 | 990 | S_modkids(pTHX_ OP *o, I32 type) |
79072805 | 991 | { |
11343788 | 992 | if (o && o->op_flags & OPf_KIDS) { |
6867be6d | 993 | OP *kid; |
11343788 | 994 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 | 995 | mod(kid, type); |
79072805 | 996 | } |
11343788 | 997 | return o; |
79072805 LW |
998 | } |
999 | ||
ff7298cb | 1000 | /* Propagate lvalue ("modifiable") context to an op and its children. |
ddeae0f1 DM |
1001 | * 'type' represents the context type, roughly based on the type of op that |
1002 | * would do the modifying, although local() is represented by OP_NULL. | |
1003 | * It's responsible for detecting things that can't be modified, flag | |
1004 | * things that need to behave specially in an lvalue context (e.g., "$$x = 5" | |
1005 | * might have to vivify a reference in $x), and so on. | |
1006 | * | |
1007 | * For example, "$a+1 = 2" would cause mod() to be called with o being | |
1008 | * OP_ADD and type being OP_SASSIGN, and would output an error. | |
1009 | */ | |
1010 | ||
79072805 | 1011 | OP * |
864dbfa3 | 1012 | Perl_mod(pTHX_ OP *o, I32 type) |
79072805 | 1013 | { |
27da23d5 | 1014 | dVAR; |
79072805 | 1015 | OP *kid; |
ddeae0f1 DM |
1016 | /* -1 = error on localize, 0 = ignore localize, 1 = ok to localize */ |
1017 | int localize = -1; | |
79072805 | 1018 | |
3280af22 | 1019 | if (!o || PL_error_count) |
11343788 | 1020 | return o; |
79072805 | 1021 | |
b162f9ea | 1022 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
1023 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
1024 | { | |
b162f9ea | 1025 | return o; |
7e363e51 | 1026 | } |
1c846c1f | 1027 | |
11343788 | 1028 | switch (o->op_type) { |
68dc0745 | 1029 | case OP_UNDEF: |
ddeae0f1 | 1030 | localize = 0; |
3280af22 | 1031 | PL_modcount++; |
5dc0d613 | 1032 | return o; |
a0d0e21e | 1033 | case OP_CONST: |
11343788 | 1034 | if (!(o->op_private & (OPpCONST_ARYBASE))) |
a0d0e21e | 1035 | goto nomod; |
54dc0f91 | 1036 | localize = 0; |
3280af22 | 1037 | if (PL_eval_start && PL_eval_start->op_type == OP_CONST) { |
7766f137 | 1038 | PL_compiling.cop_arybase = (I32)SvIV(cSVOPx(PL_eval_start)->op_sv); |
3280af22 | 1039 | PL_eval_start = 0; |
a0d0e21e LW |
1040 | } |
1041 | else if (!type) { | |
3280af22 NIS |
1042 | SAVEI32(PL_compiling.cop_arybase); |
1043 | PL_compiling.cop_arybase = 0; | |
a0d0e21e LW |
1044 | } |
1045 | else if (type == OP_REFGEN) | |
1046 | goto nomod; | |
1047 | else | |
cea2e8a9 | 1048 | Perl_croak(aTHX_ "That use of $[ is unsupported"); |
a0d0e21e | 1049 | break; |
5f05dabc | 1050 | case OP_STUB: |
5196be3e | 1051 | if (o->op_flags & OPf_PARENS) |
5f05dabc | 1052 | break; |
1053 | goto nomod; | |
a0d0e21e LW |
1054 | case OP_ENTERSUB: |
1055 | if ((type == OP_UNDEF || type == OP_REFGEN) && | |
11343788 MB |
1056 | !(o->op_flags & OPf_STACKED)) { |
1057 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
e26df76a NC |
1058 | /* The default is to set op_private to the number of children, |
1059 | which for a UNOP such as RV2CV is always 1. And w're using | |
1060 | the bit for a flag in RV2CV, so we need it clear. */ | |
1061 | o->op_private &= ~1; | |
22c35a8c | 1062 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 | 1063 | assert(cUNOPo->op_first->op_type == OP_NULL); |
93c66552 | 1064 | op_null(((LISTOP*)cUNOPo->op_first)->op_first);/* disable pushmark */ |
79072805 LW |
1065 | break; |
1066 | } | |
95f0a2f1 SB |
1067 | else if (o->op_private & OPpENTERSUB_NOMOD) |
1068 | return o; | |
cd06dffe GS |
1069 | else { /* lvalue subroutine call */ |
1070 | o->op_private |= OPpLVAL_INTRO; | |
e6438c1a | 1071 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
4978d6d9 | 1072 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) { |
cd06dffe GS |
1073 | /* Backward compatibility mode: */ |
1074 | o->op_private |= OPpENTERSUB_INARGS; | |
1075 | break; | |
1076 | } | |
1077 | else { /* Compile-time error message: */ | |
1078 | OP *kid = cUNOPo->op_first; | |
1079 | CV *cv; | |
1080 | OP *okid; | |
1081 | ||
1082 | if (kid->op_type == OP_PUSHMARK) | |
1083 | goto skip_kids; | |
1084 | if (kid->op_type != OP_NULL || kid->op_targ != OP_LIST) | |
1085 | Perl_croak(aTHX_ | |
1086 | "panic: unexpected lvalue entersub " | |
55140b79 | 1087 | "args: type/targ %ld:%"UVuf, |
3d811634 | 1088 | (long)kid->op_type, (UV)kid->op_targ); |
cd06dffe GS |
1089 | kid = kLISTOP->op_first; |
1090 | skip_kids: | |
1091 | while (kid->op_sibling) | |
1092 | kid = kid->op_sibling; | |
1093 | if (!(kid->op_type == OP_NULL && kid->op_targ == OP_RV2CV)) { | |
1094 | /* Indirect call */ | |
1095 | if (kid->op_type == OP_METHOD_NAMED | |
1096 | || kid->op_type == OP_METHOD) | |
1097 | { | |
87d7fd28 | 1098 | UNOP *newop; |
b2ffa427 | 1099 | |
87d7fd28 | 1100 | NewOp(1101, newop, 1, UNOP); |
349fd7b7 GS |
1101 | newop->op_type = OP_RV2CV; |
1102 | newop->op_ppaddr = PL_ppaddr[OP_RV2CV]; | |
5f66b61c | 1103 | newop->op_first = NULL; |
87d7fd28 GS |
1104 | newop->op_next = (OP*)newop; |
1105 | kid->op_sibling = (OP*)newop; | |
349fd7b7 | 1106 | newop->op_private |= OPpLVAL_INTRO; |
e26df76a | 1107 | newop->op_private &= ~1; |
cd06dffe GS |
1108 | break; |
1109 | } | |
b2ffa427 | 1110 | |
cd06dffe GS |
1111 | if (kid->op_type != OP_RV2CV) |
1112 | Perl_croak(aTHX_ | |
1113 | "panic: unexpected lvalue entersub " | |
55140b79 | 1114 | "entry via type/targ %ld:%"UVuf, |
3d811634 | 1115 | (long)kid->op_type, (UV)kid->op_targ); |
cd06dffe GS |
1116 | kid->op_private |= OPpLVAL_INTRO; |
1117 | break; /* Postpone until runtime */ | |
1118 | } | |
b2ffa427 NIS |
1119 | |
1120 | okid = kid; | |
cd06dffe GS |
1121 | kid = kUNOP->op_first; |
1122 | if (kid->op_type == OP_NULL && kid->op_targ == OP_RV2SV) | |
1123 | kid = kUNOP->op_first; | |
b2ffa427 | 1124 | if (kid->op_type == OP_NULL) |
cd06dffe GS |
1125 | Perl_croak(aTHX_ |
1126 | "Unexpected constant lvalue entersub " | |
55140b79 | 1127 | "entry via type/targ %ld:%"UVuf, |
3d811634 | 1128 | (long)kid->op_type, (UV)kid->op_targ); |
cd06dffe GS |
1129 | if (kid->op_type != OP_GV) { |
1130 | /* Restore RV2CV to check lvalueness */ | |
1131 | restore_2cv: | |
1132 | if (kid->op_next && kid->op_next != kid) { /* Happens? */ | |
1133 | okid->op_next = kid->op_next; | |
1134 | kid->op_next = okid; | |
1135 | } | |
1136 | else | |
5f66b61c | 1137 | okid->op_next = NULL; |
cd06dffe GS |
1138 | okid->op_type = OP_RV2CV; |
1139 | okid->op_targ = 0; | |
1140 | okid->op_ppaddr = PL_ppaddr[OP_RV2CV]; | |
1141 | okid->op_private |= OPpLVAL_INTRO; | |
e26df76a | 1142 | okid->op_private &= ~1; |
cd06dffe GS |
1143 | break; |
1144 | } | |
b2ffa427 | 1145 | |
638eceb6 | 1146 | cv = GvCV(kGVOP_gv); |
1c846c1f | 1147 | if (!cv) |
cd06dffe GS |
1148 | goto restore_2cv; |
1149 | if (CvLVALUE(cv)) | |
1150 | break; | |
1151 | } | |
1152 | } | |
79072805 LW |
1153 | /* FALL THROUGH */ |
1154 | default: | |
a0d0e21e | 1155 | nomod: |
6fbb66d6 NC |
1156 | /* grep, foreach, subcalls, refgen */ |
1157 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) | |
a0d0e21e | 1158 | break; |
cea2e8a9 | 1159 | yyerror(Perl_form(aTHX_ "Can't modify %s in %s", |
638bc118 | 1160 | (o->op_type == OP_NULL && (o->op_flags & OPf_SPECIAL) |
cd06dffe GS |
1161 | ? "do block" |
1162 | : (o->op_type == OP_ENTERSUB | |
1163 | ? "non-lvalue subroutine call" | |
53e06cf0 | 1164 | : OP_DESC(o))), |
22c35a8c | 1165 | type ? PL_op_desc[type] : "local")); |
11343788 | 1166 | return o; |
79072805 | 1167 | |
a0d0e21e LW |
1168 | case OP_PREINC: |
1169 | case OP_PREDEC: | |
1170 | case OP_POW: | |
1171 | case OP_MULTIPLY: | |
1172 | case OP_DIVIDE: | |
1173 | case OP_MODULO: | |
1174 | case OP_REPEAT: | |
1175 | case OP_ADD: | |
1176 | case OP_SUBTRACT: | |
1177 | case OP_CONCAT: | |
1178 | case OP_LEFT_SHIFT: | |
1179 | case OP_RIGHT_SHIFT: | |
1180 | case OP_BIT_AND: | |
1181 | case OP_BIT_XOR: | |
1182 | case OP_BIT_OR: | |
1183 | case OP_I_MULTIPLY: | |
1184 | case OP_I_DIVIDE: | |
1185 | case OP_I_MODULO: | |
1186 | case OP_I_ADD: | |
1187 | case OP_I_SUBTRACT: | |
11343788 | 1188 | if (!(o->op_flags & OPf_STACKED)) |
a0d0e21e | 1189 | goto nomod; |
3280af22 | 1190 | PL_modcount++; |
a0d0e21e | 1191 | break; |
b2ffa427 | 1192 | |
79072805 | 1193 | case OP_COND_EXPR: |
ddeae0f1 | 1194 | localize = 1; |
11343788 | 1195 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 | 1196 | mod(kid, type); |
79072805 LW |
1197 | break; |
1198 | ||
1199 | case OP_RV2AV: | |
1200 | case OP_RV2HV: | |
11343788 | 1201 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) { |
e6438c1a | 1202 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
11343788 | 1203 | return o; /* Treat \(@foo) like ordinary list. */ |
748a9306 LW |
1204 | } |
1205 | /* FALL THROUGH */ | |
79072805 | 1206 | case OP_RV2GV: |
5dc0d613 | 1207 | if (scalar_mod_type(o, type)) |
3fe9a6f1 | 1208 | goto nomod; |
11343788 | 1209 | ref(cUNOPo->op_first, o->op_type); |
79072805 | 1210 | /* FALL THROUGH */ |
79072805 LW |
1211 | case OP_ASLICE: |
1212 | case OP_HSLICE: | |
78f9721b SM |
1213 | if (type == OP_LEAVESUBLV) |
1214 | o->op_private |= OPpMAYBE_LVSUB; | |
ddeae0f1 | 1215 | localize = 1; |
78f9721b SM |
1216 | /* FALL THROUGH */ |
1217 | case OP_AASSIGN: | |
93a17b20 LW |
1218 | case OP_NEXTSTATE: |
1219 | case OP_DBSTATE: | |
e6438c1a | 1220 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
79072805 | 1221 | break; |
463ee0b2 | 1222 | case OP_RV2SV: |
aeea060c | 1223 | ref(cUNOPo->op_first, o->op_type); |
ddeae0f1 | 1224 | localize = 1; |
463ee0b2 | 1225 | /* FALL THROUGH */ |
79072805 | 1226 | case OP_GV: |
463ee0b2 | 1227 | case OP_AV2ARYLEN: |
3280af22 | 1228 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 1229 | case OP_SASSIGN: |
bf4b1e52 GS |
1230 | case OP_ANDASSIGN: |
1231 | case OP_ORASSIGN: | |
c963b151 | 1232 | case OP_DORASSIGN: |
ddeae0f1 DM |
1233 | PL_modcount++; |
1234 | break; | |
1235 | ||
8990e307 | 1236 | case OP_AELEMFAST: |
6a077020 | 1237 | localize = -1; |
3280af22 | 1238 | PL_modcount++; |
8990e307 LW |
1239 | break; |
1240 | ||
748a9306 LW |
1241 | case OP_PADAV: |
1242 | case OP_PADHV: | |
e6438c1a | 1243 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
5196be3e MB |
1244 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) |
1245 | return o; /* Treat \(@foo) like ordinary list. */ | |
1246 | if (scalar_mod_type(o, type)) | |
3fe9a6f1 | 1247 | goto nomod; |
78f9721b SM |
1248 | if (type == OP_LEAVESUBLV) |
1249 | o->op_private |= OPpMAYBE_LVSUB; | |
748a9306 LW |
1250 | /* FALL THROUGH */ |
1251 | case OP_PADSV: | |
3280af22 | 1252 | PL_modcount++; |
ddeae0f1 | 1253 | if (!type) /* local() */ |
cea2e8a9 | 1254 | Perl_croak(aTHX_ "Can't localize lexical variable %s", |
dd2155a4 | 1255 | PAD_COMPNAME_PV(o->op_targ)); |
463ee0b2 LW |
1256 | break; |
1257 | ||
748a9306 | 1258 | case OP_PUSHMARK: |
ddeae0f1 | 1259 | localize = 0; |
748a9306 | 1260 | break; |
b2ffa427 | 1261 | |
69969c6f SB |
1262 | case OP_KEYS: |
1263 | if (type != OP_SASSIGN) | |
1264 | goto nomod; | |
5d82c453 GA |
1265 | goto lvalue_func; |
1266 | case OP_SUBSTR: | |
1267 | if (o->op_private == 4) /* don't allow 4 arg substr as lvalue */ | |
1268 | goto nomod; | |
5f05dabc | 1269 | /* FALL THROUGH */ |
a0d0e21e | 1270 | case OP_POS: |
463ee0b2 | 1271 | case OP_VEC: |
78f9721b SM |
1272 | if (type == OP_LEAVESUBLV) |
1273 | o->op_private |= OPpMAYBE_LVSUB; | |
5d82c453 | 1274 | lvalue_func: |
11343788 MB |
1275 | pad_free(o->op_targ); |
1276 | o->op_targ = pad_alloc(o->op_type, SVs_PADMY); | |
5dc0d613 | 1277 | assert(SvTYPE(PAD_SV(o->op_targ)) == SVt_NULL); |
11343788 MB |
1278 | if (o->op_flags & OPf_KIDS) |
1279 | mod(cBINOPo->op_first->op_sibling, type); | |
463ee0b2 | 1280 | break; |
a0d0e21e | 1281 | |
463ee0b2 LW |
1282 | case OP_AELEM: |
1283 | case OP_HELEM: | |
11343788 | 1284 | ref(cBINOPo->op_first, o->op_type); |
68dc0745 | 1285 | if (type == OP_ENTERSUB && |
5dc0d613 MB |
1286 | !(o->op_private & (OPpLVAL_INTRO | OPpDEREF))) |
1287 | o->op_private |= OPpLVAL_DEFER; | |
78f9721b SM |
1288 | if (type == OP_LEAVESUBLV) |
1289 | o->op_private |= OPpMAYBE_LVSUB; | |
ddeae0f1 | 1290 | localize = 1; |
3280af22 | 1291 | PL_modcount++; |
463ee0b2 LW |
1292 | break; |
1293 | ||
1294 | case OP_SCOPE: | |
1295 | case OP_LEAVE: | |
1296 | case OP_ENTER: | |
78f9721b | 1297 | case OP_LINESEQ: |
ddeae0f1 | 1298 | localize = 0; |
11343788 MB |
1299 | if (o->op_flags & OPf_KIDS) |
1300 | mod(cLISTOPo->op_last, type); | |
a0d0e21e LW |
1301 | break; |
1302 | ||
1303 | case OP_NULL: | |
ddeae0f1 | 1304 | localize = 0; |
638bc118 GS |
1305 | if (o->op_flags & OPf_SPECIAL) /* do BLOCK */ |
1306 | goto nomod; | |
1307 | else if (!(o->op_flags & OPf_KIDS)) | |
463ee0b2 | 1308 | break; |
11343788 MB |
1309 | if (o->op_targ != OP_LIST) { |
1310 | mod(cBINOPo->op_first, type); | |
a0d0e21e LW |
1311 | break; |
1312 | } | |
1313 | /* FALL THROUGH */ | |
463ee0b2 | 1314 | case OP_LIST: |
ddeae0f1 | 1315 | localize = 0; |
11343788 | 1316 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1317 | mod(kid, type); |
1318 | break; | |
78f9721b SM |
1319 | |
1320 | case OP_RETURN: | |
1321 | if (type != OP_LEAVESUBLV) | |
1322 | goto nomod; | |
1323 | break; /* mod()ing was handled by ck_return() */ | |
463ee0b2 | 1324 | } |
58d95175 | 1325 | |
8be1be90 AMS |
1326 | /* [20011101.069] File test operators interpret OPf_REF to mean that |
1327 | their argument is a filehandle; thus \stat(".") should not set | |
1328 | it. AMS 20011102 */ | |
1329 | if (type == OP_REFGEN && | |
1330 | PL_check[o->op_type] == MEMBER_TO_FPTR(Perl_ck_ftst)) | |
1331 | return o; | |
1332 | ||
1333 | if (type != OP_LEAVESUBLV) | |
1334 | o->op_flags |= OPf_MOD; | |
1335 | ||
1336 | if (type == OP_AASSIGN || type == OP_SASSIGN) | |
1337 | o->op_flags |= OPf_SPECIAL|OPf_REF; | |
ddeae0f1 DM |
1338 | else if (!type) { /* local() */ |
1339 | switch (localize) { | |
1340 | case 1: | |
1341 | o->op_private |= OPpLVAL_INTRO; | |
1342 | o->op_flags &= ~OPf_SPECIAL; | |
1343 | PL_hints |= HINT_BLOCK_SCOPE; | |
1344 | break; | |
1345 | case 0: | |
1346 | break; | |
1347 | case -1: | |
1348 | if (ckWARN(WARN_SYNTAX)) { | |
1349 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), | |
1350 | "Useless localization of %s", OP_DESC(o)); | |
1351 | } | |
1352 | } | |
463ee0b2 | 1353 | } |
8be1be90 AMS |
1354 | else if (type != OP_GREPSTART && type != OP_ENTERSUB |
1355 | && type != OP_LEAVESUBLV) | |
1356 | o->op_flags |= OPf_REF; | |
11343788 | 1357 | return o; |
463ee0b2 LW |
1358 | } |
1359 | ||
864dbfa3 | 1360 | STATIC bool |
5f66b61c | 1361 | S_scalar_mod_type(const OP *o, I32 type) |
3fe9a6f1 | 1362 | { |
1363 | switch (type) { | |
1364 | case OP_SASSIGN: | |
5196be3e | 1365 | if (o->op_type == OP_RV2GV) |
3fe9a6f1 | 1366 | return FALSE; |
1367 | /* FALL THROUGH */ | |
1368 | case OP_PREINC: | |
1369 | case OP_PREDEC: | |
1370 | case OP_POSTINC: | |
1371 | case OP_POSTDEC: | |
1372 | case OP_I_PREINC: | |
1373 | case OP_I_PREDEC: | |
1374 | case OP_I_POSTINC: | |
1375 | case OP_I_POSTDEC: | |
1376 | case OP_POW: | |
1377 | case OP_MULTIPLY: | |
1378 | case OP_DIVIDE: | |
1379 | case OP_MODULO: | |
1380 | case OP_REPEAT: | |
1381 | case OP_ADD: | |
1382 | case OP_SUBTRACT: | |
1383 | case OP_I_MULTIPLY: | |
1384 | case OP_I_DIVIDE: | |
1385 | case OP_I_MODULO: | |
1386 | case OP_I_ADD: | |
1387 | case OP_I_SUBTRACT: | |
1388 | case OP_LEFT_SHIFT: | |
1389 | case OP_RIGHT_SHIFT: | |
1390 | case OP_BIT_AND: | |
1391 | case OP_BIT_XOR: | |
1392 | case OP_BIT_OR: | |
1393 | case OP_CONCAT: | |
1394 | case OP_SUBST: | |
1395 | case OP_TRANS: | |
49e9fbe6 GS |
1396 | case OP_READ: |
1397 | case OP_SYSREAD: | |
1398 | case OP_RECV: | |
bf4b1e52 GS |
1399 | case OP_ANDASSIGN: |
1400 | case OP_ORASSIGN: | |
3fe9a6f1 | 1401 | return TRUE; |
1402 | default: | |
1403 | return FALSE; | |
1404 | } | |
1405 | } | |
1406 | ||
35cd451c | 1407 | STATIC bool |
5f66b61c | 1408 | S_is_handle_constructor(const OP *o, I32 numargs) |
35cd451c GS |
1409 | { |
1410 | switch (o->op_type) { | |
1411 | case OP_PIPE_OP: | |
1412 | case OP_SOCKPAIR: | |
504618e9 | 1413 | if (numargs == 2) |
35cd451c GS |
1414 | return TRUE; |
1415 | /* FALL THROUGH */ | |
1416 | case OP_SYSOPEN: | |
1417 | case OP_OPEN: | |
ded8aa31 | 1418 | case OP_SELECT: /* XXX c.f. SelectSaver.pm */ |
35cd451c GS |
1419 | case OP_SOCKET: |
1420 | case OP_OPEN_DIR: | |
1421 | case OP_ACCEPT: | |
504618e9 | 1422 | if (numargs == 1) |
35cd451c | 1423 | return TRUE; |
5f66b61c | 1424 | /* FALLTHROUGH */ |
35cd451c GS |
1425 | default: |
1426 | return FALSE; | |
1427 | } | |
1428 | } | |
1429 | ||
463ee0b2 | 1430 | OP * |
864dbfa3 | 1431 | Perl_refkids(pTHX_ OP *o, I32 type) |
463ee0b2 | 1432 | { |
11343788 | 1433 | if (o && o->op_flags & OPf_KIDS) { |
6867be6d | 1434 | OP *kid; |
11343788 | 1435 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1436 | ref(kid, type); |
1437 | } | |
11343788 | 1438 | return o; |
463ee0b2 LW |
1439 | } |
1440 | ||
1441 | OP * | |
e4c5ccf3 | 1442 | Perl_doref(pTHX_ OP *o, I32 type, bool set_op_ref) |
463ee0b2 | 1443 | { |
27da23d5 | 1444 | dVAR; |
463ee0b2 | 1445 | OP *kid; |
463ee0b2 | 1446 | |
3280af22 | 1447 | if (!o || PL_error_count) |
11343788 | 1448 | return o; |
463ee0b2 | 1449 | |
11343788 | 1450 | switch (o->op_type) { |
a0d0e21e | 1451 | case OP_ENTERSUB: |
afebc493 | 1452 | if ((type == OP_EXISTS || type == OP_DEFINED || type == OP_LOCK) && |
11343788 MB |
1453 | !(o->op_flags & OPf_STACKED)) { |
1454 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
22c35a8c | 1455 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 | 1456 | assert(cUNOPo->op_first->op_type == OP_NULL); |
93c66552 | 1457 | op_null(((LISTOP*)cUNOPo->op_first)->op_first); /* disable pushmark */ |
11343788 | 1458 | o->op_flags |= OPf_SPECIAL; |
e26df76a | 1459 | o->op_private &= ~1; |
8990e307 LW |
1460 | } |
1461 | break; | |
aeea060c | 1462 | |
463ee0b2 | 1463 | case OP_COND_EXPR: |
11343788 | 1464 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
e4c5ccf3 | 1465 | doref(kid, type, set_op_ref); |
463ee0b2 | 1466 | break; |
8990e307 | 1467 | case OP_RV2SV: |
35cd451c GS |
1468 | if (type == OP_DEFINED) |
1469 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
e4c5ccf3 | 1470 | doref(cUNOPo->op_first, o->op_type, set_op_ref); |
4633a7c4 LW |
1471 | /* FALL THROUGH */ |
1472 | case OP_PADSV: | |
5f05dabc | 1473 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1474 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1475 | : type == OP_RV2HV ? OPpDEREF_HV | |
1476 | : OPpDEREF_SV); | |
11343788 | 1477 | o->op_flags |= OPf_MOD; |
a0d0e21e | 1478 | } |
8990e307 | 1479 | break; |
1c846c1f | 1480 | |
2faa37cc | 1481 | case OP_THREADSV: |
a863c7d1 MB |
1482 | o->op_flags |= OPf_MOD; /* XXX ??? */ |
1483 | break; | |
1484 | ||
463ee0b2 LW |
1485 | case OP_RV2AV: |
1486 | case OP_RV2HV: | |
e4c5ccf3 RH |
1487 | if (set_op_ref) |
1488 | o->op_flags |= OPf_REF; | |
8990e307 | 1489 | /* FALL THROUGH */ |
463ee0b2 | 1490 | case OP_RV2GV: |
35cd451c GS |
1491 | if (type == OP_DEFINED) |
1492 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
e4c5ccf3 | 1493 | doref(cUNOPo->op_first, o->op_type, set_op_ref); |
463ee0b2 | 1494 | break; |
8990e307 | 1495 | |
463ee0b2 LW |
1496 | case OP_PADAV: |
1497 | case OP_PADHV: | |
e4c5ccf3 RH |
1498 | if (set_op_ref) |
1499 | o->op_flags |= OPf_REF; | |
79072805 | 1500 | break; |
aeea060c | 1501 | |
8990e307 | 1502 | case OP_SCALAR: |
79072805 | 1503 | case OP_NULL: |
11343788 | 1504 | if (!(o->op_flags & OPf_KIDS)) |
463ee0b2 | 1505 | break; |
e4c5ccf3 | 1506 | doref(cBINOPo->op_first, type, set_op_ref); |
79072805 LW |
1507 | break; |
1508 | case OP_AELEM: | |
1509 | case OP_HELEM: | |
e4c5ccf3 | 1510 | doref(cBINOPo->op_first, o->op_type, set_op_ref); |
5f05dabc | 1511 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1512 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1513 | : type == OP_RV2HV ? OPpDEREF_HV | |
1514 | : OPpDEREF_SV); | |
11343788 | 1515 | o->op_flags |= OPf_MOD; |
8990e307 | 1516 | } |
79072805 LW |
1517 | break; |
1518 | ||
463ee0b2 | 1519 | case OP_SCOPE: |
79072805 | 1520 | case OP_LEAVE: |
e4c5ccf3 RH |
1521 | set_op_ref = FALSE; |
1522 | /* FALL THROUGH */ | |
79072805 | 1523 | case OP_ENTER: |
8990e307 | 1524 | case OP_LIST: |
11343788 | 1525 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1526 | break; |
e4c5ccf3 | 1527 | doref(cLISTOPo->op_last, type, set_op_ref); |
79072805 | 1528 | break; |
a0d0e21e LW |
1529 | default: |
1530 | break; | |
79072805 | 1531 | } |
11343788 | 1532 | return scalar(o); |
8990e307 | 1533 | |
79072805 LW |
1534 | } |
1535 | ||
09bef843 SB |
1536 | STATIC OP * |
1537 | S_dup_attrlist(pTHX_ OP *o) | |
1538 | { | |
97aff369 | 1539 | dVAR; |
0bd48802 | 1540 | OP *rop; |
09bef843 SB |
1541 | |
1542 | /* An attrlist is either a simple OP_CONST or an OP_LIST with kids, | |
1543 | * where the first kid is OP_PUSHMARK and the remaining ones | |
1544 | * are OP_CONST. We need to push the OP_CONST values. | |
1545 | */ | |
1546 | if (o->op_type == OP_CONST) | |
1547 | rop = newSVOP(OP_CONST, o->op_flags, SvREFCNT_inc(cSVOPo->op_sv)); | |
1548 | else { | |
1549 | assert((o->op_type == OP_LIST) && (o->op_flags & OPf_KIDS)); | |
5f66b61c | 1550 | rop = NULL; |
09bef843 SB |
1551 | for (o = cLISTOPo->op_first; o; o=o->op_sibling) { |
1552 | if (o->op_type == OP_CONST) | |
1553 | rop = append_elem(OP_LIST, rop, | |
1554 | newSVOP(OP_CONST, o->op_flags, | |
1555 | SvREFCNT_inc(cSVOPo->op_sv))); | |
1556 | } | |
1557 | } | |
1558 | return rop; | |
1559 | } | |
1560 | ||
1561 | STATIC void | |
95f0a2f1 | 1562 | S_apply_attrs(pTHX_ HV *stash, SV *target, OP *attrs, bool for_my) |
09bef843 | 1563 | { |
27da23d5 | 1564 | dVAR; |
09bef843 SB |
1565 | SV *stashsv; |
1566 | ||
1567 | /* fake up C<use attributes $pkg,$rv,@attrs> */ | |
1568 | ENTER; /* need to protect against side-effects of 'use' */ | |
1569 | SAVEINT(PL_expect); | |
5aaec2b4 | 1570 | stashsv = stash ? newSVhek(HvNAME_HEK(stash)) : &PL_sv_no; |
e4783991 | 1571 | |
09bef843 | 1572 | #define ATTRSMODULE "attributes" |
95f0a2f1 SB |
1573 | #define ATTRSMODULE_PM "attributes.pm" |
1574 | ||
1575 | if (for_my) { | |
95f0a2f1 | 1576 | /* Don't force the C<use> if we don't need it. */ |
a4fc7abc | 1577 | SV * const * const svp = hv_fetchs(GvHVn(PL_incgv), ATTRSMODULE_PM, FALSE); |
95f0a2f1 | 1578 | if (svp && *svp != &PL_sv_undef) |
bb263b4e | 1579 | /*EMPTY*/; /* already in %INC */ |
95f0a2f1 SB |
1580 | else |
1581 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, | |
6136c704 | 1582 | newSVpvs(ATTRSMODULE), NULL); |
95f0a2f1 SB |
1583 | } |
1584 | else { | |
1585 | Perl_load_module(aTHX_ PERL_LOADMOD_IMPORT_OPS, | |
6136c704 AL |
1586 | newSVpvs(ATTRSMODULE), |
1587 | NULL, | |
95f0a2f1 SB |
1588 | prepend_elem(OP_LIST, |
1589 | newSVOP(OP_CONST, 0, stashsv), | |
1590 | prepend_elem(OP_LIST, | |
1591 | newSVOP(OP_CONST, 0, | |
1592 | newRV(target)), | |
1593 | dup_attrlist(attrs)))); | |
1594 | } | |
09bef843 SB |
1595 | LEAVE; |
1596 | } | |
1597 | ||
95f0a2f1 SB |
1598 | STATIC void |
1599 | S_apply_attrs_my(pTHX_ HV *stash, OP *target, OP *attrs, OP **imopsp) | |
1600 | { | |
97aff369 | 1601 | dVAR; |
95f0a2f1 SB |
1602 | OP *pack, *imop, *arg; |
1603 | SV *meth, *stashsv; | |
1604 | ||
1605 | if (!attrs) | |
1606 | return; | |
1607 | ||
1608 | assert(target->op_type == OP_PADSV || | |
1609 | target->op_type == OP_PADHV || | |
1610 | target->op_type == OP_PADAV); | |
1611 | ||
1612 | /* Ensure that attributes.pm is loaded. */ | |
dd2155a4 | 1613 | apply_attrs(stash, PAD_SV(target->op_targ), attrs, TRUE); |
95f0a2f1 SB |
1614 | |
1615 | /* Need package name for method call. */ | |
6136c704 | 1616 | pack = newSVOP(OP_CONST, 0, newSVpvs(ATTRSMODULE)); |
95f0a2f1 SB |
1617 | |
1618 | /* Build up the real arg-list. */ | |
5aaec2b4 NC |
1619 | stashsv = stash ? newSVhek(HvNAME_HEK(stash)) : &PL_sv_no; |
1620 | ||
95f0a2f1 SB |
1621 | arg = newOP(OP_PADSV, 0); |
1622 | arg->op_targ = target->op_targ; | |
1623 | arg = prepend_elem(OP_LIST, | |
1624 | newSVOP(OP_CONST, 0, stashsv), | |
1625 | prepend_elem(OP_LIST, | |
1626 | newUNOP(OP_REFGEN, 0, | |
1627 | mod(arg, OP_REFGEN)), | |
1628 | dup_attrlist(attrs))); | |
1629 | ||
1630 | /* Fake up a method call to import */ | |
18916d0d | 1631 | meth = newSVpvs_share("import"); |
95f0a2f1 SB |
1632 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL|OPf_WANT_VOID, |
1633 | append_elem(OP_LIST, | |
1634 | prepend_elem(OP_LIST, pack, list(arg)), | |
1635 | newSVOP(OP_METHOD_NAMED, 0, meth))); | |
1636 | imop->op_private |= OPpENTERSUB_NOMOD; | |
1637 | ||
1638 | /* Combine the ops. */ | |
1639 | *imopsp = append_elem(OP_LIST, *imopsp, imop); | |
1640 | } | |
1641 | ||
1642 | /* | |
1643 | =notfor apidoc apply_attrs_string | |
1644 | ||
1645 | Attempts to apply a list of attributes specified by the C<attrstr> and | |
1646 | C<len> arguments to the subroutine identified by the C<cv> argument which | |
1647 | is expected to be associated with the package identified by the C<stashpv> | |
1648 | argument (see L<attributes>). It gets this wrong, though, in that it | |
1649 | does not correctly identify the boundaries of the individual attribute | |
1650 | specifications within C<attrstr>. This is not really intended for the | |
1651 | public API, but has to be listed here for systems such as AIX which | |
1652 | need an explicit export list for symbols. (It's called from XS code | |
1653 | in support of the C<ATTRS:> keyword from F<xsubpp>.) Patches to fix it | |
1654 | to respect attribute syntax properly would be welcome. | |
1655 | ||
1656 | =cut | |
1657 | */ | |
1658 | ||
be3174d2 | 1659 | void |
6867be6d AL |
1660 | Perl_apply_attrs_string(pTHX_ const char *stashpv, CV *cv, |
1661 | const char *attrstr, STRLEN len) | |
be3174d2 | 1662 | { |
5f66b61c | 1663 | OP *attrs = NULL; |
be3174d2 GS |
1664 | |
1665 | if (!len) { | |
1666 | len = strlen(attrstr); | |
1667 | } | |
1668 | ||
1669 | while (len) { | |
1670 | for (; isSPACE(*attrstr) && len; --len, ++attrstr) ; | |
1671 | if (len) { | |
890ce7af | 1672 | const char * const sstr = attrstr; |
be3174d2 GS |
1673 | for (; !isSPACE(*attrstr) && len; --len, ++attrstr) ; |
1674 | attrs = append_elem(OP_LIST, attrs, | |
1675 | newSVOP(OP_CONST, 0, | |
1676 | newSVpvn(sstr, attrstr-sstr))); | |
1677 | } | |
1678 | } | |
1679 | ||
1680 | Perl_load_module(aTHX_ PERL_LOADMOD_IMPORT_OPS, | |
6136c704 | 1681 | newSVpvs(ATTRSMODULE), |
a0714e2c | 1682 | NULL, prepend_elem(OP_LIST, |
be3174d2 GS |
1683 | newSVOP(OP_CONST, 0, newSVpv(stashpv,0)), |
1684 | prepend_elem(OP_LIST, | |
1685 | newSVOP(OP_CONST, 0, | |
1686 | newRV((SV*)cv)), | |
1687 | attrs))); | |
1688 | } | |
1689 | ||
09bef843 | 1690 | STATIC OP * |
95f0a2f1 | 1691 | S_my_kid(pTHX_ OP *o, OP *attrs, OP **imopsp) |
93a17b20 | 1692 | { |
97aff369 | 1693 | dVAR; |
93a17b20 LW |
1694 | I32 type; |
1695 | ||
3280af22 | 1696 | if (!o || PL_error_count) |
11343788 | 1697 | return o; |
93a17b20 | 1698 | |
11343788 | 1699 | type = o->op_type; |
93a17b20 | 1700 | if (type == OP_LIST) { |
6867be6d | 1701 | OP *kid; |
11343788 | 1702 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
95f0a2f1 | 1703 | my_kid(kid, attrs, imopsp); |
dab48698 | 1704 | } else if (type == OP_UNDEF) { |
7766148a | 1705 | return o; |
77ca0c92 LW |
1706 | } else if (type == OP_RV2SV || /* "our" declaration */ |
1707 | type == OP_RV2AV || | |
1708 | type == OP_RV2HV) { /* XXX does this let anything illegal in? */ | |
1ce0b88c RGS |
1709 | if (cUNOPo->op_first->op_type != OP_GV) { /* MJD 20011224 */ |
1710 | yyerror(Perl_form(aTHX_ "Can't declare %s in %s", | |
1711 | OP_DESC(o), PL_in_my == KEY_our ? "our" : "my")); | |
1712 | } else if (attrs) { | |
551405c4 | 1713 | GV * const gv = cGVOPx_gv(cUNOPo->op_first); |
1ce0b88c | 1714 | PL_in_my = FALSE; |
5c284bb0 | 1715 | PL_in_my_stash = NULL; |
1ce0b88c RGS |
1716 | apply_attrs(GvSTASH(gv), |
1717 | (type == OP_RV2SV ? GvSV(gv) : | |
1718 | type == OP_RV2AV ? (SV*)GvAV(gv) : | |
1719 | type == OP_RV2HV ? (SV*)GvHV(gv) : (SV*)gv), | |
1720 | attrs, FALSE); | |
1721 | } | |
192587c2 | 1722 | o->op_private |= OPpOUR_INTRO; |
77ca0c92 | 1723 | return o; |
95f0a2f1 SB |
1724 | } |
1725 | else if (type != OP_PADSV && | |
93a17b20 LW |
1726 | type != OP_PADAV && |
1727 | type != OP_PADHV && | |
1728 | type != OP_PUSHMARK) | |
1729 | { | |
eb64745e | 1730 | yyerror(Perl_form(aTHX_ "Can't declare %s in \"%s\"", |
53e06cf0 | 1731 | OP_DESC(o), |
eb64745e | 1732 | PL_in_my == KEY_our ? "our" : "my")); |
11343788 | 1733 | return o; |
93a17b20 | 1734 | } |
09bef843 SB |
1735 | else if (attrs && type != OP_PUSHMARK) { |
1736 | HV *stash; | |
09bef843 | 1737 | |
eb64745e | 1738 | PL_in_my = FALSE; |
5c284bb0 | 1739 | PL_in_my_stash = NULL; |
eb64745e | 1740 | |
09bef843 | 1741 | /* check for C<my Dog $spot> when deciding package */ |
dd2155a4 DM |
1742 | stash = PAD_COMPNAME_TYPE(o->op_targ); |
1743 | if (!stash) | |
09bef843 | 1744 | stash = PL_curstash; |
95f0a2f1 | 1745 | apply_attrs_my(stash, o, attrs, imopsp); |
09bef843 | 1746 | } |
11343788 MB |
1747 | o->op_flags |= OPf_MOD; |
1748 | o->op_private |= OPpLVAL_INTRO; | |
1749 | return o; | |
93a17b20 LW |
1750 | } |
1751 | ||
1752 | OP * | |
09bef843 SB |
1753 | Perl_my_attrs(pTHX_ OP *o, OP *attrs) |
1754 | { | |
97aff369 | 1755 | dVAR; |
0bd48802 | 1756 | OP *rops; |
95f0a2f1 SB |
1757 | int maybe_scalar = 0; |
1758 | ||
d2be0de5 | 1759 | /* [perl #17376]: this appears to be premature, and results in code such as |
c754c3d7 | 1760 | C< our(%x); > executing in list mode rather than void mode */ |
d2be0de5 | 1761 | #if 0 |
09bef843 SB |
1762 | if (o->op_flags & OPf_PARENS) |
1763 | list(o); | |
95f0a2f1 SB |
1764 | else |
1765 | maybe_scalar = 1; | |
d2be0de5 YST |
1766 | #else |
1767 | maybe_scalar = 1; | |
1768 | #endif | |
09bef843 SB |
1769 | if (attrs) |
1770 | SAVEFREEOP(attrs); | |
5f66b61c | 1771 | rops = NULL; |
95f0a2f1 SB |
1772 | o = my_kid(o, attrs, &rops); |
1773 | if (rops) { | |
1774 | if (maybe_scalar && o->op_type == OP_PADSV) { | |
1775 | o = scalar(append_list(OP_LIST, (LISTOP*)rops, (LISTOP*)o)); | |
1776 | o->op_private |= OPpLVAL_INTRO; | |
1777 | } | |
1778 | else | |
1779 | o = append_list(OP_LIST, (LISTOP*)o, (LISTOP*)rops); | |
1780 | } | |
eb64745e | 1781 | PL_in_my = FALSE; |
5c284bb0 | 1782 | PL_in_my_stash = NULL; |
eb64745e | 1783 | return o; |
09bef843 SB |
1784 | } |
1785 | ||
1786 | OP * | |
1787 | Perl_my(pTHX_ OP *o) | |
1788 | { | |
5f66b61c | 1789 | return my_attrs(o, NULL); |
09bef843 SB |
1790 | } |
1791 | ||
1792 | OP * | |
864dbfa3 | 1793 | Perl_sawparens(pTHX_ OP *o) |
79072805 LW |
1794 | { |
1795 | if (o) | |
1796 | o->op_flags |= OPf_PARENS; | |
1797 | return o; | |
1798 | } | |
1799 | ||
1800 | OP * | |
864dbfa3 | 1801 | Perl_bind_match(pTHX_ I32 type, OP *left, OP *right) |
79072805 | 1802 | { |
11343788 | 1803 | OP *o; |
59f00321 | 1804 | bool ismatchop = 0; |
79072805 | 1805 | |
041457d9 | 1806 | if ( (left->op_type == OP_RV2AV || |
599cee73 PM |
1807 | left->op_type == OP_RV2HV || |
1808 | left->op_type == OP_PADAV || | |
041457d9 DM |
1809 | left->op_type == OP_PADHV) |
1810 | && ckWARN(WARN_MISC)) | |
1811 | { | |
551405c4 | 1812 | const char * const desc = PL_op_desc[(right->op_type == OP_SUBST || |
599cee73 PM |
1813 | right->op_type == OP_TRANS) |
1814 | ? right->op_type : OP_MATCH]; | |
551405c4 | 1815 | const char * const sample = ((left->op_type == OP_RV2AV || |
dff6d3cd GS |
1816 | left->op_type == OP_PADAV) |
1817 | ? "@array" : "%hash"); | |
9014280d | 1818 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
1c846c1f | 1819 | "Applying %s to %s will act on scalar(%s)", |
599cee73 | 1820 | desc, sample, sample); |
2ae324a7 | 1821 | } |
1822 | ||
5cc9e5c9 RH |
1823 | if (right->op_type == OP_CONST && |
1824 | cSVOPx(right)->op_private & OPpCONST_BARE && | |
1825 | cSVOPx(right)->op_private & OPpCONST_STRICT) | |
1826 | { | |
1827 | no_bareword_allowed(right); | |
1828 | } | |
1829 | ||
59f00321 RGS |
1830 | ismatchop = right->op_type == OP_MATCH || |
1831 | right->op_type == OP_SUBST || | |
1832 | right->op_type == OP_TRANS; | |
1833 | if (ismatchop && right->op_private & OPpTARGET_MY) { | |
1834 | right->op_targ = 0; | |
1835 | right->op_private &= ~OPpTARGET_MY; | |
1836 | } | |
1837 | if (!(right->op_flags & OPf_STACKED) && ismatchop) { | |
79072805 | 1838 | right->op_flags |= OPf_STACKED; |
6fbb66d6 NC |
1839 | if (right->op_type != OP_MATCH && |
1840 | ! (right->op_type == OP_TRANS && | |
1841 | right->op_private & OPpTRANS_IDENTICAL)) | |
463ee0b2 | 1842 | left = mod(left, right->op_type); |
79072805 | 1843 | if (right->op_type == OP_TRANS) |
11343788 | 1844 | o = newBINOP(OP_NULL, OPf_STACKED, scalar(left), right); |
79072805 | 1845 | else |
11343788 | 1846 | o = prepend_elem(right->op_type, scalar(left), right); |
79072805 | 1847 | if (type == OP_NOT) |
11343788 MB |
1848 | return newUNOP(OP_NOT, 0, scalar(o)); |
1849 | return o; | |
79072805 LW |
1850 | } |
1851 | else | |
1852 | return bind_match(type, left, | |
131b3ad0 | 1853 | pmruntime(newPMOP(OP_MATCH, 0), right, 0)); |
79072805 LW |
1854 | } |
1855 | ||
1856 | OP * | |
864dbfa3 | 1857 | Perl_invert(pTHX_ OP *o) |
79072805 | 1858 | { |
11343788 MB |
1859 | if (!o) |
1860 | return o; | |
79072805 | 1861 | /* XXX need to optimize away NOT NOT here? Or do we let optimizer do it? */ |
11343788 | 1862 | return newUNOP(OP_NOT, OPf_SPECIAL, scalar(o)); |
79072805 LW |
1863 | } |
1864 | ||
1865 | OP * | |
864dbfa3 | 1866 | Perl_scope(pTHX_ OP *o) |
79072805 | 1867 | { |
27da23d5 | 1868 | dVAR; |
79072805 | 1869 | if (o) { |
3280af22 | 1870 | if (o->op_flags & OPf_PARENS || PERLDB_NOOPT || PL_tainting) { |
463ee0b2 LW |
1871 | o = prepend_elem(OP_LINESEQ, newOP(OP_ENTER, 0), o); |
1872 | o->op_type = OP_LEAVE; | |
22c35a8c | 1873 | o->op_ppaddr = PL_ppaddr[OP_LEAVE]; |
463ee0b2 | 1874 | } |
fdb22418 HS |
1875 | else if (o->op_type == OP_LINESEQ) { |
1876 | OP *kid; | |
1877 | o->op_type = OP_SCOPE; | |
1878 | o->op_ppaddr = PL_ppaddr[OP_SCOPE]; | |
1879 | kid = ((LISTOP*)o)->op_first; | |
59110972 | 1880 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) { |
fdb22418 | 1881 | op_null(kid); |
59110972 RH |
1882 | |
1883 | /* The following deals with things like 'do {1 for 1}' */ | |
1884 | kid = kid->op_sibling; | |
1885 | if (kid && | |
1886 | (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE)) | |
1887 | op_null(kid); | |
1888 | } | |
463ee0b2 | 1889 | } |
fdb22418 | 1890 | else |
5f66b61c | 1891 | o = newLISTOP(OP_SCOPE, 0, o, NULL); |
79072805 LW |
1892 | } |
1893 | return o; | |
1894 | } | |
1895 | ||
a0d0e21e | 1896 | int |
864dbfa3 | 1897 | Perl_block_start(pTHX_ int full) |
79072805 | 1898 | { |
97aff369 | 1899 | dVAR; |
73d840c0 | 1900 | const int retval = PL_savestack_ix; |
dd2155a4 | 1901 | pad_block_start(full); |
b3ac6de7 | 1902 | SAVEHINTS(); |
3280af22 | 1903 | PL_hints &= ~HINT_BLOCK_SCOPE; |
1c846c1f | 1904 | SAVESPTR(PL_compiling.cop_warnings); |
0453d815 | 1905 | if (! specialWARN(PL_compiling.cop_warnings)) { |
599cee73 PM |
1906 | PL_compiling.cop_warnings = newSVsv(PL_compiling.cop_warnings) ; |
1907 | SAVEFREESV(PL_compiling.cop_warnings) ; | |
1908 | } | |
ac27b0f5 NIS |
1909 | SAVESPTR(PL_compiling.cop_io); |
1910 | if (! specialCopIO(PL_compiling.cop_io)) { | |
1911 | PL_compiling.cop_io = newSVsv(PL_compiling.cop_io) ; | |
1912 | SAVEFREESV(PL_compiling.cop_io) ; | |
1913 | } | |
a0d0e21e LW |
1914 | return retval; |
1915 | } | |
1916 | ||
1917 | OP* | |
864dbfa3 | 1918 | Perl_block_end(pTHX_ I32 floor, OP *seq) |
a0d0e21e | 1919 | { |
97aff369 | 1920 | dVAR; |
6867be6d | 1921 | const int needblockscope = PL_hints & HINT_BLOCK_SCOPE; |
551405c4 | 1922 | OP* const retval = scalarseq(seq); |
e9818f4e | 1923 | LEAVE_SCOPE(floor); |
eb160463 | 1924 | PL_compiling.op_private = (U8)(PL_hints & HINT_PRIVATE_MASK); |
a0d0e21e | 1925 | if (needblockscope) |
3280af22 | 1926 | PL_hints |= HINT_BLOCK_SCOPE; /* propagate out */ |
dd2155a4 | 1927 | pad_leavemy(); |
a0d0e21e LW |
1928 | return retval; |
1929 | } | |
1930 | ||
76e3520e | 1931 | STATIC OP * |
cea2e8a9 | 1932 | S_newDEFSVOP(pTHX) |
54b9620d | 1933 | { |
97aff369 | 1934 | dVAR; |
6867be6d | 1935 | const I32 offset = pad_findmy("$_"); |
59f00321 RGS |
1936 | if (offset == NOT_IN_PAD || PAD_COMPNAME_FLAGS(offset) & SVpad_OUR) { |
1937 | return newSVREF(newGVOP(OP_GV, 0, PL_defgv)); | |
1938 | } | |
1939 | else { | |
551405c4 | 1940 | OP * const o = newOP(OP_PADSV, 0); |
59f00321 RGS |
1941 | o->op_targ = offset; |
1942 | return o; | |
1943 | } | |
54b9620d MB |
1944 | } |
1945 | ||
a0d0e21e | 1946 | void |
864dbfa3 | 1947 | Perl_newPROG(pTHX_ OP *o) |
a0d0e21e | 1948 | { |
97aff369 | 1949 | dVAR; |
3280af22 | 1950 | if (PL_in_eval) { |
b295d113 TH |
1951 | if (PL_eval_root) |
1952 | return; | |
faef0170 HS |
1953 | PL_eval_root = newUNOP(OP_LEAVEEVAL, |
1954 | ((PL_in_eval & EVAL_KEEPERR) | |
1955 | ? OPf_SPECIAL : 0), o); | |
3280af22 | 1956 | PL_eval_start = linklist(PL_eval_root); |
7934575e GS |
1957 | PL_eval_root->op_private |= OPpREFCOUNTED; |
1958 | OpREFCNT_set(PL_eval_root, 1); | |
3280af22 | 1959 | PL_eval_root->op_next = 0; |
a2efc822 | 1960 | CALL_PEEP(PL_eval_start); |
a0d0e21e LW |
1961 | } |
1962 | else { | |
6be89cf9 AE |
1963 | if (o->op_type == OP_STUB) { |
1964 | PL_comppad_name = 0; | |
1965 | PL_compcv = 0; | |
2a4f803a | 1966 | FreeOp(o); |
a0d0e21e | 1967 | return; |
6be89cf9 | 1968 | } |
3280af22 NIS |
1969 | PL_main_root = scope(sawparens(scalarvoid(o))); |
1970 | PL_curcop = &PL_compiling; | |
1971 | PL_main_start = LINKLIST(PL_main_root); | |
7934575e GS |
1972 | PL_main_root->op_private |= OPpREFCOUNTED; |
1973 | OpREFCNT_set(PL_main_root, 1); | |
3280af22 | 1974 | PL_main_root->op_next = 0; |
a2efc822 | 1975 | CALL_PEEP(PL_main_start); |
3280af22 | 1976 | PL_compcv = 0; |
3841441e | 1977 | |
4fdae800 | 1978 | /* Register with debugger */ |
84902520 | 1979 | if (PERLDB_INTER) { |
551405c4 | 1980 | CV * const cv = get_cv("DB::postponed", FALSE); |
3841441e CS |
1981 | if (cv) { |
1982 | dSP; | |
924508f0 | 1983 | PUSHMARK(SP); |
cc49e20b | 1984 | XPUSHs((SV*)CopFILEGV(&PL_compiling)); |
3841441e | 1985 | PUTBACK; |
864dbfa3 | 1986 | call_sv((SV*)cv, G_DISCARD); |
3841441e CS |
1987 | } |
1988 | } | |
79072805 | 1989 | } |
79072805 LW |
1990 | } |
1991 | ||
1992 | OP * | |
864dbfa3 | 1993 | Perl_localize(pTHX_ OP *o, I32 lex) |
79072805 | 1994 | { |
97aff369 | 1995 | dVAR; |
79072805 | 1996 | if (o->op_flags & OPf_PARENS) |
d2be0de5 YST |
1997 | /* [perl #17376]: this appears to be premature, and results in code such as |
1998 | C< our(%x); > executing in list mode rather than void mode */ | |
1999 | #if 0 | |
79072805 | 2000 | list(o); |
d2be0de5 | 2001 | #else |
bb263b4e | 2002 | /*EMPTY*/; |
d2be0de5 | 2003 | #endif |
8990e307 | 2004 | else { |
041457d9 DM |
2005 | if ( PL_bufptr > PL_oldbufptr && PL_bufptr[-1] == ',' |
2006 | && ckWARN(WARN_PARENTHESIS)) | |
64420d0d JH |
2007 | { |
2008 | char *s = PL_bufptr; | |
bac662ee | 2009 | bool sigil = FALSE; |
64420d0d | 2010 | |
8473848f | 2011 | /* some heuristics to detect a potential error */ |
bac662ee | 2012 | while (*s && (strchr(", \t\n", *s))) |
64420d0d | 2013 | s++; |
8473848f | 2014 | |
bac662ee TS |
2015 | while (1) { |
2016 | if (*s && strchr("@$%*", *s) && *++s | |
2017 | && (isALNUM(*s) || UTF8_IS_CONTINUED(*s))) { | |
2018 | s++; | |
2019 | sigil = TRUE; | |
2020 | while (*s && (isALNUM(*s) || UTF8_IS_CONTINUED(*s))) | |
2021 | s++; | |
2022 | while (*s && (strchr(", \t\n", *s))) | |
2023 | s++; | |
2024 | } | |
2025 | else | |
2026 | break; | |
2027 | } | |
2028 | if (sigil && (*s == ';' || *s == '=')) { | |
2029 | Perl_warner(aTHX_ packWARN(WARN_PARENTHESIS), | |
8473848f RGS |
2030 | "Parentheses missing around \"%s\" list", |
2031 | lex ? (PL_in_my == KEY_our ? "our" : "my") | |
2032 | : "local"); | |
2033 | } | |
8990e307 LW |
2034 | } |
2035 | } | |
93a17b20 | 2036 | if (lex) |
eb64745e | 2037 | o = my(o); |
93a17b20 | 2038 | else |
eb64745e GS |
2039 | o = mod(o, OP_NULL); /* a bit kludgey */ |
2040 | PL_in_my = FALSE; | |
5c284bb0 | 2041 | PL_in_my_stash = NULL; |
eb64745e | 2042 | return o; |
79072805 LW |
2043 | } |
2044 | ||
2045 | OP * | |
864dbfa3 | 2046 | Perl_jmaybe(pTHX_ OP *o) |
79072805 LW |
2047 | { |
2048 | if (o->op_type == OP_LIST) { | |
fafc274c NC |
2049 | OP * const o2 |
2050 | = newSVREF(newGVOP(OP_GV, 0, gv_fetchpvs(";", GV_ADD|GV_NOTQUAL, | |
2051 | SVt_PV))); | |
554b3eca | 2052 | o = convert(OP_JOIN, 0, prepend_elem(OP_LIST, o2, o)); |
79072805 LW |
2053 | } |
2054 | return o; | |
2055 | } | |
2056 | ||
2057 | OP * | |
864dbfa3 | 2058 | Perl_fold_constants(pTHX_ register OP *o) |
79072805 | 2059 | { |
27da23d5 | 2060 | dVAR; |
79072805 LW |
2061 | register OP *curop; |
2062 | I32 type = o->op_type; | |
748a9306 | 2063 | SV *sv; |
79072805 | 2064 | |
22c35a8c | 2065 | if (PL_opargs[type] & OA_RETSCALAR) |
79072805 | 2066 | scalar(o); |
b162f9ea | 2067 | if (PL_opargs[type] & OA_TARGET && !o->op_targ) |
ed6116ce | 2068 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 | 2069 | |
eac055e9 GS |
2070 | /* integerize op, unless it happens to be C<-foo>. |
2071 | * XXX should pp_i_negate() do magic string negation instead? */ | |
2072 | if ((PL_opargs[type] & OA_OTHERINT) && (PL_hints & HINT_INTEGER) | |
2073 | && !(type == OP_NEGATE && cUNOPo->op_first->op_type == OP_CONST | |
2074 | && (cUNOPo->op_first->op_private & OPpCONST_BARE))) | |
2075 | { | |
22c35a8c | 2076 | o->op_ppaddr = PL_ppaddr[type = ++(o->op_type)]; |
eac055e9 | 2077 | } |
85e6fe83 | 2078 | |
22c35a8c | 2079 | if (!(PL_opargs[type] & OA_FOLDCONST)) |
79072805 LW |
2080 | goto nope; |
2081 | ||
de939608 | 2082 | switch (type) { |
7a52d87a GS |
2083 | case OP_NEGATE: |
2084 | /* XXX might want a ck_negate() for this */ | |
2085 | cUNOPo->op_first->op_private &= ~OPpCONST_STRICT; | |
2086 | break; | |
de939608 CS |
2087 | case OP_UCFIRST: |
2088 | case OP_LCFIRST: | |
2089 | case OP_UC: | |
2090 | case OP_LC: | |
69dcf70c MB |
2091 | case OP_SLT: |
2092 | case OP_SGT: | |
2093 | case OP_SLE: | |
2094 | case OP_SGE: | |
2095 | case OP_SCMP: | |
2de3dbcc JH |
2096 | /* XXX what about the numeric ops? */ |
2097 | if (PL_hints & HINT_LOCALE) | |
de939608 CS |
2098 | goto nope; |
2099 | } | |
2100 | ||
3280af22 | 2101 | if (PL_error_count) |
a0d0e21e LW |
2102 | goto nope; /* Don't try to run w/ errors */ |
2103 | ||
79072805 | 2104 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
11fa937b GS |
2105 | if ((curop->op_type != OP_CONST || |
2106 | (curop->op_private & OPpCONST_BARE)) && | |
7a52d87a GS |
2107 | curop->op_type != OP_LIST && |
2108 | curop->op_type != OP_SCALAR && | |
2109 | curop->op_type != OP_NULL && | |
2110 | curop->op_type != OP_PUSHMARK) | |
2111 | { | |
79072805 LW |
2112 | goto nope; |
2113 | } | |
2114 | } | |
2115 | ||
2116 | curop = LINKLIST(o); | |
2117 | o->op_next = 0; | |
533c011a | 2118 | PL_op = curop; |
cea2e8a9 | 2119 | CALLRUNOPS(aTHX); |
3280af22 | 2120 | sv = *(PL_stack_sp--); |
748a9306 | 2121 | if (o->op_targ && sv == PAD_SV(o->op_targ)) /* grab pad temp? */ |
dd2155a4 | 2122 | pad_swipe(o->op_targ, FALSE); |
748a9306 LW |
2123 | else if (SvTEMP(sv)) { /* grab mortal temp? */ |
2124 | (void)SvREFCNT_inc(sv); | |
2125 | SvTEMP_off(sv); | |
85e6fe83 | 2126 | } |
79072805 LW |
2127 | op_free(o); |
2128 | if (type == OP_RV2GV) | |
b1cb66bf | 2129 | return newGVOP(OP_GV, 0, (GV*)sv); |
52a96ae6 | 2130 | return newSVOP(OP_CONST, 0, sv); |
aeea060c | 2131 | |
79072805 | 2132 | nope: |
79072805 LW |
2133 | return o; |
2134 | } | |
2135 | ||
2136 | OP * | |
864dbfa3 | 2137 | Perl_gen_constant_list(pTHX_ register OP *o) |
79072805 | 2138 | { |
27da23d5 | 2139 | dVAR; |
79072805 | 2140 | register OP *curop; |
6867be6d | 2141 | const I32 oldtmps_floor = PL_tmps_floor; |
79072805 | 2142 | |
a0d0e21e | 2143 | list(o); |
3280af22 | 2144 | if (PL_error_count) |
a0d0e21e LW |
2145 | return o; /* Don't attempt to run with errors */ |
2146 | ||
533c011a | 2147 | PL_op = curop = LINKLIST(o); |
a0d0e21e | 2148 | o->op_next = 0; |
a2efc822 | 2149 | CALL_PEEP(curop); |
cea2e8a9 GS |
2150 | pp_pushmark(); |
2151 | CALLRUNOPS(aTHX); | |
533c011a | 2152 | PL_op = curop; |
cea2e8a9 | 2153 | pp_anonlist(); |
3280af22 | 2154 | PL_tmps_floor = oldtmps_floor; |
79072805 LW |
2155 | |
2156 | o->op_type = OP_RV2AV; | |
22c35a8c | 2157 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
fb53bbb2 SG |
2158 | o->op_flags &= ~OPf_REF; /* treat \(1..2) like an ordinary list */ |
2159 | o->op_flags |= OPf_PARENS; /* and flatten \(1..2,3) */ | |
2814eb74 | 2160 | o->op_opt = 0; /* needs to be revisited in peep() */ |
79072805 | 2161 | curop = ((UNOP*)o)->op_first; |
3280af22 | 2162 | ((UNOP*)o)->op_first = newSVOP(OP_CONST, 0, SvREFCNT_inc(*PL_stack_sp--)); |
79072805 | 2163 | op_free(curop); |
79072805 LW |
2164 | linklist(o); |
2165 | return list(o); | |
2166 | } | |
2167 | ||
2168 | OP * | |
864dbfa3 | 2169 | Perl_convert(pTHX_ I32 type, I32 flags, OP *o) |
79072805 | 2170 | { |
27da23d5 | 2171 | dVAR; |
11343788 | 2172 | if (!o || o->op_type != OP_LIST) |
5f66b61c | 2173 | o = newLISTOP(OP_LIST, 0, o, NULL); |
748a9306 | 2174 | else |
5dc0d613 | 2175 | o->op_flags &= ~OPf_WANT; |
79072805 | 2176 | |
22c35a8c | 2177 | if (!(PL_opargs[type] & OA_MARK)) |
93c66552 | 2178 | op_null(cLISTOPo->op_first); |
8990e307 | 2179 | |
eb160463 | 2180 | o->op_type = (OPCODE)type; |
22c35a8c | 2181 | o->op_ppaddr = PL_ppaddr[type]; |
11343788 | 2182 | o->op_flags |= flags; |
79072805 | 2183 | |
11343788 | 2184 | o = CHECKOP(type, o); |
fe2774ed | 2185 | if (o->op_type != (unsigned)type) |
11343788 | 2186 | return o; |
79072805 | 2187 | |
11343788 | 2188 | return fold_constants(o); |
79072805 LW |
2189 | } |
2190 | ||
2191 | /* List constructors */ | |
2192 | ||
2193 | OP * | |
864dbfa3 | 2194 | Perl_append_elem(pTHX_ I32 type, OP *first, OP *last) |
79072805 LW |
2195 | { |
2196 | if (!first) | |
2197 | return last; | |
8990e307 LW |
2198 | |
2199 | if (!last) | |
79072805 | 2200 | return first; |
8990e307 | 2201 | |
fe2774ed | 2202 | if (first->op_type != (unsigned)type |
155aba94 GS |
2203 | || (type == OP_LIST && (first->op_flags & OPf_PARENS))) |
2204 | { | |
2205 | return newLISTOP(type, 0, first, last); | |
2206 | } | |
79072805 | 2207 | |
a0d0e21e LW |
2208 | if (first->op_flags & OPf_KIDS) |
2209 | ((LISTOP*)first)->op_last->op_sibling = last; | |
2210 | else { | |
2211 | first->op_flags |= OPf_KIDS; | |
2212 | ((LISTOP*)first)->op_first = last; | |
2213 | } | |
2214 | ((LISTOP*)first)->op_last = last; | |
a0d0e21e | 2215 | return first; |
79072805 LW |
2216 | } |
2217 | ||
2218 | OP * | |
864dbfa3 | 2219 | Perl_append_list(pTHX_ I32 type, LISTOP *first, LISTOP *last) |
79072805 LW |
2220 | { |
2221 | if (!first) | |
2222 | return (OP*)last; | |
8990e307 LW |
2223 | |
2224 | if (!last) | |
79072805 | 2225 | return (OP*)first; |
8990e307 | 2226 | |
fe2774ed | 2227 | if (first->op_type != (unsigned)type) |
79072805 | 2228 | return prepend_elem(type, (OP*)first, (OP*)last); |
8990e307 | 2229 | |
fe2774ed | 2230 | if (last->op_type != (unsigned)type) |
79072805 LW |
2231 | return append_elem(type, (OP*)first, (OP*)last); |
2232 | ||
2233 | first->op_last->op_sibling = last->op_first; | |
2234 | first->op_last = last->op_last; | |
117dada2 | 2235 | first->op_flags |= (last->op_flags & OPf_KIDS); |
1c846c1f | 2236 | |
238a4c30 NIS |
2237 | FreeOp(last); |
2238 | ||
79072805 LW |
2239 | return (OP*)first; |
2240 | } | |
2241 | ||
2242 | OP * | |
864dbfa3 | 2243 | Perl_prepend_elem(pTHX_ I32 type, OP *first, OP *last) |
79072805 LW |
2244 | { |
2245 | if (!first) | |
2246 | return last; | |
8990e307 LW |
2247 | |
2248 | if (!last) | |
79072805 | 2249 | return first; |
8990e307 | 2250 | |
fe2774ed | 2251 | if (last->op_type == (unsigned)type) { |
8990e307 LW |
2252 | if (type == OP_LIST) { /* already a PUSHMARK there */ |
2253 | first->op_sibling = ((LISTOP*)last)->op_first->op_sibling; | |
2254 | ((LISTOP*)last)->op_first->op_sibling = first; | |
36a5d4ba DC |
2255 | if (!(first->op_flags & OPf_PARENS)) |
2256 | last->op_flags &= ~OPf_PARENS; | |
8990e307 LW |
2257 | } |
2258 | else { | |
2259 | if (!(last->op_flags & OPf_KIDS)) { | |
2260 | ((LISTOP*)last)->op_last = first; | |
2261 | last->op_flags |= OPf_KIDS; | |
2262 | } | |
2263 | first->op_sibling = ((LISTOP*)last)->op_first; | |
2264 | ((LISTOP*)last)->op_first = first; | |
79072805 | 2265 | } |
117dada2 | 2266 | last->op_flags |= OPf_KIDS; |
79072805 LW |
2267 | return last; |
2268 | } | |
2269 | ||
2270 | return newLISTOP(type, 0, first, last); | |
2271 | } | |
2272 | ||
2273 | /* Constructors */ | |
2274 | ||
2275 | OP * | |
864dbfa3 | 2276 | Perl_newNULLLIST(pTHX) |
79072805 | 2277 | { |
8990e307 LW |
2278 | return newOP(OP_STUB, 0); |
2279 | } | |
2280 | ||
2281 | OP * | |
864dbfa3 | 2282 | Perl_force_list(pTHX_ OP *o) |
8990e307 | 2283 | { |
11343788 | 2284 | if (!o || o->op_type != OP_LIST) |
5f66b61c | 2285 | o = newLISTOP(OP_LIST, 0, o, NULL); |
93c66552 | 2286 | op_null(o); |
11343788 | 2287 | return o; |
79072805 LW |
2288 | } |
2289 | ||
2290 | OP * | |
864dbfa3 | 2291 | Perl_newLISTOP(pTHX_ I32 type, I32 flags, OP *first, OP *last) |
79072805 | 2292 | { |
27da23d5 | 2293 | dVAR; |
79072805 LW |
2294 | LISTOP *listop; |
2295 | ||
b7dc083c | 2296 | NewOp(1101, listop, 1, LISTOP); |
79072805 | 2297 | |
eb160463 | 2298 | listop->op_type = (OPCODE)type; |
22c35a8c | 2299 | listop->op_ppaddr = PL_ppaddr[type]; |
117dada2 SM |
2300 | if (first || last) |
2301 | flags |= OPf_KIDS; | |
eb160463 | 2302 | listop->op_flags = (U8)flags; |
79072805 LW |
2303 | |
2304 | if (!last && first) | |
2305 | last = first; | |
2306 | else if (!first && last) | |
2307 | first = last; | |
8990e307 LW |
2308 | else if (first) |
2309 | first->op_sibling = last; | |
79072805 LW |
2310 | listop->op_first = first; |
2311 | listop->op_last = last; | |
8990e307 | 2312 | if (type == OP_LIST) { |
551405c4 | 2313 | OP* const pushop = newOP(OP_PUSHMARK, 0); |
8990e307 LW |
2314 | pushop->op_sibling = first; |
2315 | listop->op_first = pushop; | |
2316 | listop->op_flags |= OPf_KIDS; | |
2317 | if (!last) | |
2318 | listop->op_last = pushop; | |
2319 | } | |
79072805 | 2320 | |
463d09e6 | 2321 | return CHECKOP(type, listop); |
79072805 LW |
2322 | } |
2323 | ||
2324 | OP * | |
864dbfa3 | 2325 | Perl_newOP(pTHX_ I32 type, I32 flags) |
79072805 | 2326 | { |
27da23d5 | 2327 | dVAR; |
11343788 | 2328 | OP *o; |
b7dc083c | 2329 | NewOp(1101, o, 1, OP); |
eb160463 | 2330 | o->op_type = (OPCODE)type; |
22c35a8c | 2331 | o->op_ppaddr = PL_ppaddr[type]; |
eb160463 | 2332 | o->op_flags = (U8)flags; |
79072805 | 2333 | |
11343788 | 2334 | o->op_next = o; |
eb160463 | 2335 | o->op_private = (U8)(0 | (flags >> 8)); |
22c35a8c | 2336 | if (PL_opargs[type] & OA_RETSCALAR) |
11343788 | 2337 | scalar(o); |
22c35a8c | 2338 | if (PL_opargs[type] & OA_TARGET) |
11343788 MB |
2339 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
2340 | return CHECKOP(type, o); | |
79072805 LW |
2341 | } |
2342 | ||
2343 | OP * | |
864dbfa3 | 2344 | Perl_newUNOP(pTHX_ I32 type, I32 flags, OP *first) |
79072805 | 2345 | { |
27da23d5 | 2346 | dVAR; |
79072805 LW |
2347 | UNOP *unop; |
2348 | ||
93a17b20 | 2349 | if (!first) |
aeea060c | 2350 | first = newOP(OP_STUB, 0); |
22c35a8c | 2351 | if (PL_opargs[type] & OA_MARK) |
8990e307 | 2352 | first = force_list(first); |
93a17b20 | 2353 | |
b7dc083c | 2354 | NewOp(1101, unop, 1, UNOP); |
eb160463 | 2355 | unop->op_type = (OPCODE)type; |
22c35a8c | 2356 | unop->op_ppaddr = PL_ppaddr[type]; |
79072805 | 2357 | unop->op_first = first; |
585ec06d | 2358 | unop->op_flags = (U8)(flags | OPf_KIDS); |
eb160463 | 2359 | unop->op_private = (U8)(1 | (flags >> 8)); |
e50aee73 | 2360 | unop = (UNOP*) CHECKOP(type, unop); |
79072805 LW |
2361 | if (unop->op_next) |
2362 | return (OP*)unop; | |
2363 | ||
a0d0e21e | 2364 | return fold_constants((OP *) unop); |
79072805 LW |
2365 | } |
2366 | ||
2367 | OP * | |
864dbfa3 | 2368 | Perl_newBINOP(pTHX_ I32 type, I32 flags, OP *first, OP *last) |
79072805 | 2369 | { |
27da23d5 | 2370 | dVAR; |
79072805 | 2371 | BINOP *binop; |
b7dc083c | 2372 | NewOp(1101, binop, 1, BINOP); |
79072805 LW |
2373 | |
2374 | if (!first) | |
2375 | first = newOP(OP_NULL, 0); | |
2376 | ||
eb160463 | 2377 | binop->op_type = (OPCODE)type; |
22c35a8c | 2378 | binop->op_ppaddr = PL_ppaddr[type]; |
79072805 | 2379 | binop->op_first = first; |
585ec06d | 2380 | binop->op_flags = (U8)(flags | OPf_KIDS); |
79072805 LW |
2381 | if (!last) { |
2382 | last = first; | |
eb160463 | 2383 | binop->op_private = (U8)(1 | (flags >> 8)); |
79072805 LW |
2384 | } |
2385 | else { | |
eb160463 | 2386 | binop->op_private = (U8)(2 | (flags >> 8)); |
79072805 LW |
2387 | first->op_sibling = last; |
2388 | } | |
2389 | ||
e50aee73 | 2390 | binop = (BINOP*)CHECKOP(type, binop); |
eb160463 | 2391 | if (binop->op_next || binop->op_type != (OPCODE)type) |
79072805 LW |
2392 | return (OP*)binop; |
2393 | ||
7284ab6f | 2394 | binop->op_last = binop->op_first->op_sibling; |
79072805 | 2395 | |
a0d0e21e | 2396 | return fold_constants((OP *)binop); |
79072805 LW |
2397 | } |
2398 | ||
5f66b61c AL |
2399 | static int uvcompare(const void *a, const void *b) |
2400 | __attribute__nonnull__(1) | |
2401 | __attribute__nonnull__(2) | |
2402 | __attribute__pure__; | |
abb2c242 | 2403 | static int uvcompare(const void *a, const void *b) |
2b9d42f0 | 2404 | { |
e1ec3a88 | 2405 | if (*((const UV *)a) < (*(const UV *)b)) |
2b9d42f0 | 2406 | return -1; |
e1ec3a88 | 2407 | if (*((const UV *)a) > (*(const UV *)b)) |
2b9d42f0 | 2408 | return 1; |
e1ec3a88 | 2409 | if (*((const UV *)a+1) < (*(const UV *)b+1)) |
2b9d42f0 | 2410 | return -1; |
e1ec3a88 | 2411 | if (*((const UV *)a+1) > (*(const UV *)b+1)) |
2b9d42f0 | 2412 | return 1; |
a0ed51b3 LW |
2413 | return 0; |
2414 | } | |
2415 | ||
79072805 | 2416 | OP * |
864dbfa3 | 2417 | Perl_pmtrans(pTHX_ OP *o, OP *expr, OP *repl) |
79072805 | 2418 | { |
97aff369 | 2419 | dVAR; |
2d03de9c AL |
2420 | SV * const tstr = ((SVOP*)expr)->op_sv; |
2421 | SV * const rstr = ((SVOP*)repl)->op_sv; | |
463ee0b2 LW |
2422 | STRLEN tlen; |
2423 | STRLEN rlen; | |
5c144d81 NC |
2424 | const U8 *t = (U8*)SvPV_const(tstr, tlen); |
2425 | const U8 *r = (U8*)SvPV_const(rstr, rlen); | |
79072805 LW |
2426 | register I32 i; |
2427 | register I32 j; | |
9b877dbb | 2428 | I32 grows = 0; |
79072805 LW |
2429 | register short *tbl; |
2430 | ||
551405c4 AL |
2431 | const I32 complement = o->op_private & OPpTRANS_COMPLEMENT; |
2432 | const I32 squash = o->op_private & OPpTRANS_SQUASH; | |
2433 | I32 del = o->op_private & OPpTRANS_DELETE; | |
800b4dc4 | 2434 | PL_hints |= HINT_BLOCK_SCOPE; |
1c846c1f | 2435 | |
036b4402 GS |
2436 | if (SvUTF8(tstr)) |
2437 | o->op_private |= OPpTRANS_FROM_UTF; | |
1c846c1f NIS |
2438 | |
2439 | if (SvUTF8(rstr)) | |
036b4402 | 2440 | o->op_private |= OPpTRANS_TO_UTF; |
79072805 | 2441 | |
a0ed51b3 | 2442 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { |
396482e1 | 2443 | SV* const listsv = newSVpvs("# comment\n"); |
c445ea15 | 2444 | SV* transv = NULL; |
5c144d81 NC |
2445 | const U8* tend = t + tlen; |
2446 | const U8* rend = r + rlen; | |
ba210ebe | 2447 | STRLEN ulen; |
84c133a0 RB |
2448 | UV tfirst = 1; |
2449 | UV tlast = 0; | |
2450 | IV tdiff; | |
2451 | UV rfirst = 1; | |
2452 | UV rlast = 0; | |
2453 | IV rdiff; | |
2454 | IV diff; | |
a0ed51b3 LW |
2455 | I32 none = 0; |
2456 | U32 max = 0; | |
2457 | I32 bits; | |
a0ed51b3 | 2458 | I32 havefinal = 0; |
9c5ffd7c | 2459 | U32 final = 0; |
551405c4 AL |
2460 | const I32 from_utf = o->op_private & OPpTRANS_FROM_UTF; |
2461 | const I32 to_utf = o->op_private & OPpTRANS_TO_UTF; | |
bf4a1e57 JH |
2462 | U8* tsave = NULL; |
2463 | U8* rsave = NULL; | |
2464 | ||
2465 | if (!from_utf) { | |
2466 | STRLEN len = tlen; | |
5c144d81 | 2467 | t = tsave = bytes_to_utf8(t, &len); |
bf4a1e57 JH |
2468 | tend = t + len; |
2469 | } | |
2470 | if (!to_utf && rlen) { | |
2471 | STRLEN len = rlen; | |
5c144d81 | 2472 | r = rsave = bytes_to_utf8(r, &len); |
bf4a1e57 JH |
2473 | rend = r + len; |
2474 | } | |
a0ed51b3 | 2475 | |
2b9d42f0 NIS |
2476 | /* There are several snags with this code on EBCDIC: |
2477 | 1. 0xFF is a legal UTF-EBCDIC byte (there are no illegal bytes). | |
2478 | 2. scan_const() in toke.c has encoded chars in native encoding which makes | |
2479 | ranges at least in EBCDIC 0..255 range the bottom odd. | |
2480 | */ | |
2481 | ||
a0ed51b3 | 2482 | if (complement) { |
89ebb4a3 | 2483 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
2b9d42f0 | 2484 | UV *cp; |
a0ed51b3 | 2485 | UV nextmin = 0; |
a02a5408 | 2486 | Newx(cp, 2*tlen, UV); |
a0ed51b3 | 2487 | i = 0; |
396482e1 | 2488 | transv = newSVpvs(""); |
a0ed51b3 | 2489 | while (t < tend) { |
2b9d42f0 NIS |
2490 | cp[2*i] = utf8n_to_uvuni(t, tend-t, &ulen, 0); |
2491 | t += ulen; | |
2492 | if (t < tend && NATIVE_TO_UTF(*t) == 0xff) { | |
a0ed51b3 | 2493 | t++; |
2b9d42f0 NIS |
2494 | cp[2*i+1] = utf8n_to_uvuni(t, tend-t, &ulen, 0); |
2495 | t += ulen; | |
a0ed51b3 | 2496 | } |
2b9d42f0 NIS |
2497 | else { |
2498 | cp[2*i+1] = cp[2*i]; | |
2499 | } | |
2500 | i++; | |
a0ed51b3 | 2501 | } |
2b9d42f0 | 2502 | qsort(cp, i, 2*sizeof(UV), uvcompare); |
a0ed51b3 | 2503 | for (j = 0; j < i; j++) { |
2b9d42f0 | 2504 | UV val = cp[2*j]; |
a0ed51b3 LW |
2505 | diff = val - nextmin; |
2506 | if (diff > 0) { | |
9041c2e3 | 2507 | t = uvuni_to_utf8(tmpbuf,nextmin); |
dfe13c55 | 2508 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 | 2509 | if (diff > 1) { |
2b9d42f0 | 2510 | U8 range_mark = UTF_TO_NATIVE(0xff); |
9041c2e3 | 2511 | t = uvuni_to_utf8(tmpbuf, val - 1); |
2b9d42f0 | 2512 | sv_catpvn(transv, (char *)&range_mark, 1); |
dfe13c55 | 2513 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 LW |
2514 | } |
2515 | } | |
2b9d42f0 | 2516 | val = cp[2*j+1]; |
a0ed51b3 LW |
2517 | if (val >= nextmin) |
2518 | nextmin = val + 1; | |
2519 | } | |
9041c2e3 | 2520 | t = uvuni_to_utf8(tmpbuf,nextmin); |
dfe13c55 | 2521 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
2b9d42f0 NIS |
2522 | { |
2523 | U8 range_mark = UTF_TO_NATIVE(0xff); | |
2524 | sv_catpvn(transv, (char *)&range_mark, 1); | |
2525 | } | |
b851fbc1 JH |
2526 | t = uvuni_to_utf8_flags(tmpbuf, 0x7fffffff, |
2527 | UNICODE_ALLOW_SUPER); | |
dfe13c55 | 2528 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
93524f2b | 2529 | t = (const U8*)SvPVX_const(transv); |
a0ed51b3 LW |
2530 | tlen = SvCUR(transv); |
2531 | tend = t + tlen; | |
455d824a | 2532 | Safefree(cp); |
a0ed51b3 LW |
2533 | } |
2534 | else if (!rlen && !del) { | |
2535 | r = t; rlen = tlen; rend = tend; | |
4757a243 LW |
2536 | } |
2537 | if (!squash) { | |
05d340b8 | 2538 | if ((!rlen && !del) || t == r || |
12ae5dfc | 2539 | (tlen == rlen && memEQ((char *)t, (char *)r, tlen))) |
01ec43d0 | 2540 | { |
4757a243 | 2541 | o->op_private |= OPpTRANS_IDENTICAL; |
01ec43d0 | 2542 | } |
a0ed51b3 LW |
2543 | } |
2544 | ||
2545 | while (t < tend || tfirst <= tlast) { | |
2546 | /* see if we need more "t" chars */ | |
2547 | if (tfirst > tlast) { | |
9041c2e3 | 2548 | tfirst = (I32)utf8n_to_uvuni(t, tend - t, &ulen, 0); |
a0ed51b3 | 2549 | t += ulen; |
2b9d42f0 | 2550 | if (t < tend && NATIVE_TO_UTF(*t) == 0xff) { /* illegal utf8 val indicates range */ |
ba210ebe | 2551 | t++; |
9041c2e3 | 2552 | tlast = (I32)utf8n_to_uvuni(t, tend - t, &ulen, 0); |
a0ed51b3 LW |
2553 | t += ulen; |
2554 | } | |
2555 | else | |
2556 | tlast = tfirst; | |
2557 | } | |
2558 | ||
2559 | /* now see if we need more "r" chars */ | |
2560 | if (rfirst > rlast) { | |
2561 | if (r < rend) { | |
9041c2e3 | 2562 | rfirst = (I32)utf8n_to_uvuni(r, rend - r, &ulen, 0); |
a0ed51b3 | 2563 | r += ulen; |
2b9d42f0 | 2564 | if (r < rend && NATIVE_TO_UTF(*r) == 0xff) { /* illegal utf8 val indicates range */ |
ba210ebe | 2565 | r++; |
9041c2e3 | 2566 | rlast = (I32)utf8n_to_uvuni(r, rend - r, &ulen, 0); |
a0ed51b3 LW |
2567 | r += ulen; |
2568 | } | |
2569 | else | |
2570 | rlast = rfirst; | |
2571 | } | |
2572 | else { | |
2573 | if (!havefinal++) | |
2574 | final = rlast; | |
2575 | rfirst = rlast = 0xffffffff; | |
2576 | } | |
2577 | } | |
2578 | ||
2579 | /* now see which range will peter our first, if either. */ | |
2580 | tdiff = tlast - tfirst; | |
2581 | rdiff = rlast - rfirst; | |
2582 | ||
2583 | if (tdiff <= rdiff) | |
2584 | diff = tdiff; | |
2585 | else | |
2586 | diff = rdiff; | |
2587 | ||
2588 | if (rfirst == 0xffffffff) { | |
2589 | diff = tdiff; /* oops, pretend rdiff is infinite */ | |
2590 | if (diff > 0) | |
894356b3 GS |
2591 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t%04lx\tXXXX\n", |
2592 | (long)tfirst, (long)tlast); | |
a0ed51b3 | 2593 | else |
894356b3 | 2594 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t\tXXXX\n", (long)tfirst); |
a0ed51b3 LW |
2595 | } |
2596 | else { | |
2597 | if (diff > 0) | |
894356b3 GS |
2598 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t%04lx\t%04lx\n", |
2599 | (long)tfirst, (long)(tfirst + diff), | |
2600 | (long)rfirst); | |
a0ed51b3 | 2601 | else |
894356b3 GS |
2602 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t\t%04lx\n", |
2603 | (long)tfirst, (long)rfirst); | |
a0ed51b3 LW |
2604 | |
2605 | if (rfirst + diff > max) | |
2606 | max = rfirst + diff; | |
9b877dbb | 2607 | if (!grows) |
45005bfb JH |
2608 | grows = (tfirst < rfirst && |
2609 | UNISKIP(tfirst) < UNISKIP(rfirst + diff)); | |
2610 | rfirst += diff + 1; | |
a0ed51b3 LW |
2611 | } |
2612 | tfirst += diff + 1; | |
2613 | } | |
2614 | ||
2615 | none = ++max; | |
2616 | if (del) | |
2617 | del = ++max; | |
2618 | ||
2619 | if (max > 0xffff) | |
2620 | bits = 32; | |
2621 | else if (max > 0xff) | |
2622 | bits = 16; | |
2623 | else | |
2624 | bits = 8; | |
2625 | ||
455d824a | 2626 | Safefree(cPVOPo->op_pv); |
a0ed51b3 LW |
2627 | cSVOPo->op_sv = (SV*)swash_init("utf8", "", listsv, bits, none); |
2628 | SvREFCNT_dec(listsv); | |
2629 | if (transv) | |
2630 | SvREFCNT_dec(transv); | |
2631 | ||
45005bfb | 2632 | if (!del && havefinal && rlen) |
b448e4fe JH |
2633 | (void)hv_store((HV*)SvRV((cSVOPo->op_sv)), "FINAL", 5, |
2634 | newSVuv((UV)final), 0); | |
a0ed51b3 | 2635 | |
9b877dbb | 2636 | if (grows) |
a0ed51b3 LW |
2637 | o->op_private |= OPpTRANS_GROWS; |
2638 | ||
9b877dbb IH |
2639 | if (tsave) |
2640 | Safefree(tsave); | |
2641 | if (rsave) | |
2642 | Safefree(rsave); | |
2643 | ||
a0ed51b3 LW |
2644 | op_free(expr); |
2645 | op_free(repl); | |
2646 | return o; | |
2647 | } | |
2648 | ||
2649 | tbl = (short*)cPVOPo->op_pv; | |
79072805 LW |
2650 | if (complement) { |
2651 | Zero(tbl, 256, short); | |
eb160463 | 2652 | for (i = 0; i < (I32)tlen; i++) |
ec49126f | 2653 | tbl[t[i]] = -1; |
79072805 LW |
2654 | for (i = 0, j = 0; i < 256; i++) { |
2655 | if (!tbl[i]) { | |
eb160463 | 2656 | if (j >= (I32)rlen) { |
a0ed51b3 | 2657 | if (del) |
79072805 LW |
2658 | tbl[i] = -2; |
2659 | else if (rlen) | |
ec49126f | 2660 | tbl[i] = r[j-1]; |
79072805 | 2661 | else |
eb160463 | 2662 | tbl[i] = (short)i; |
79072805 | 2663 | } |
9b877dbb IH |
2664 | else { |
2665 | if (i < 128 && r[j] >= 128) | |
2666 | grows = 1; | |
ec49126f | 2667 | tbl[i] = r[j++]; |
9b877dbb | 2668 | } |
79072805 LW |
2669 | } |
2670 | } | |
05d340b8 JH |
2671 | if (!del) { |
2672 | if (!rlen) { | |
2673 | j = rlen; | |
2674 | if (!squash) | |
2675 | o->op_private |= OPpTRANS_IDENTICAL; | |
2676 | } | |
eb160463 | 2677 | else if (j >= (I32)rlen) |
05d340b8 JH |
2678 | j = rlen - 1; |
2679 | else | |
2680 | cPVOPo->op_pv = (char*)Renew(tbl, 0x101+rlen-j, short); | |
585ec06d | 2681 | tbl[0x100] = (short)(rlen - j); |
eb160463 | 2682 | for (i=0; i < (I32)rlen - j; i++) |
8973db79 JH |
2683 | tbl[0x101+i] = r[j+i]; |
2684 | } | |
79072805 LW |
2685 | } |
2686 | else { | |
a0ed51b3 | 2687 | if (!rlen && !del) { |
79072805 | 2688 | r = t; rlen = tlen; |
5d06d08e | 2689 | if (!squash) |
4757a243 | 2690 | o->op_private |= OPpTRANS_IDENTICAL; |
79072805 | 2691 | } |
94bfe852 RGS |
2692 | else if (!squash && rlen == tlen && memEQ((char*)t, (char*)r, tlen)) { |
2693 | o->op_private |= OPpTRANS_IDENTICAL; | |
2694 | } | |
79072805 LW |
2695 | for (i = 0; i < 256; i++) |
2696 | tbl[i] = -1; | |
eb160463 GS |
2697 | for (i = 0, j = 0; i < (I32)tlen; i++,j++) { |
2698 | if (j >= (I32)rlen) { | |
a0ed51b3 | 2699 | if (del) { |
ec49126f | 2700 | if (tbl[t[i]] == -1) |
2701 | tbl[t[i]] = -2; | |
79072805 LW |
2702 | continue; |
2703 | } | |
2704 | --j; | |
2705 | } | |
9b877dbb IH |
2706 | if (tbl[t[i]] == -1) { |
2707 | if (t[i] < 128 && r[j] >= 128) | |
2708 | grows = 1; | |
ec49126f | 2709 | tbl[t[i]] = r[j]; |
9b877dbb | 2710 | } |
79072805 LW |
2711 | } |
2712 | } | |
9b877dbb IH |
2713 | if (grows) |
2714 | o->op_private |= OPpTRANS_GROWS; | |
79072805 LW |
2715 | op_free(expr); |
2716 | op_free(repl); | |
2717 | ||
11343788 | 2718 | return o; |
79072805 LW |
2719 | } |
2720 | ||
2721 | OP * | |
864dbfa3 | 2722 | Perl_newPMOP(pTHX_ I32 type, I32 flags) |
79072805 | 2723 | { |
27da23d5 | 2724 | dVAR; |
79072805 LW |
2725 | PMOP *pmop; |
2726 | ||
b7dc083c | 2727 | NewOp(1101, pmop, 1, PMOP); |
eb160463 | 2728 | pmop->op_type = (OPCODE)type; |
22c35a8c | 2729 | pmop->op_ppaddr = PL_ppaddr[type]; |
eb160463 GS |
2730 | pmop->op_flags = (U8)flags; |
2731 | pmop->op_private = (U8)(0 | (flags >> 8)); | |
79072805 | 2732 | |
3280af22 | 2733 | if (PL_hints & HINT_RE_TAINT) |
b3eb6a9b | 2734 | pmop->op_pmpermflags |= PMf_RETAINT; |
3280af22 | 2735 | if (PL_hints & HINT_LOCALE) |
b3eb6a9b GS |
2736 | pmop->op_pmpermflags |= PMf_LOCALE; |
2737 | pmop->op_pmflags = pmop->op_pmpermflags; | |
36477c24 | 2738 | |
debc9467 | 2739 | #ifdef USE_ITHREADS |
551405c4 AL |
2740 | if (av_len((AV*) PL_regex_pad[0]) > -1) { |
2741 | SV * const repointer = av_pop((AV*)PL_regex_pad[0]); | |
2742 | pmop->op_pmoffset = SvIV(repointer); | |
2743 | SvREPADTMP_off(repointer); | |
2744 | sv_setiv(repointer,0); | |
2745 | } else { | |
2746 | SV * const repointer = newSViv(0); | |
2747 | av_push(PL_regex_padav,SvREFCNT_inc(repointer)); | |
2748 | pmop->op_pmoffset = av_len(PL_regex_padav); | |
2749 | PL_regex_pad = AvARRAY(PL_regex_padav); | |
13137afc | 2750 | } |
debc9467 | 2751 | #endif |
1eb1540c | 2752 | |
1fcf4c12 | 2753 | /* link into pm list */ |
3280af22 | 2754 | if (type != OP_TRANS && PL_curstash) { |
8d2f4536 NC |
2755 | MAGIC *mg = mg_find((SV*)PL_curstash, PERL_MAGIC_symtab); |
2756 | ||
2757 | if (!mg) { | |
2758 | mg = sv_magicext((SV*)PL_curstash, 0, PERL_MAGIC_symtab, 0, 0, 0); | |
2759 | } | |
2760 | pmop->op_pmnext = (PMOP*)mg->mg_obj; | |
2761 | mg->mg_obj = (SV*)pmop; | |
cb55de95 | 2762 | PmopSTASH_set(pmop,PL_curstash); |
79072805 LW |
2763 | } |
2764 | ||
463d09e6 | 2765 | return CHECKOP(type, pmop); |
79072805 LW |
2766 | } |
2767 | ||
131b3ad0 DM |
2768 | /* Given some sort of match op o, and an expression expr containing a |
2769 | * pattern, either compile expr into a regex and attach it to o (if it's | |
2770 | * constant), or convert expr into a runtime regcomp op sequence (if it's | |
2771 | * not) | |
2772 | * | |
2773 | * isreg indicates that the pattern is part of a regex construct, eg | |
2774 | * $x =~ /pattern/ or split /pattern/, as opposed to $x =~ $pattern or | |
2775 | * split "pattern", which aren't. In the former case, expr will be a list | |
2776 | * if the pattern contains more than one term (eg /a$b/) or if it contains | |
2777 | * a replacement, ie s/// or tr///. | |
2778 | */ | |
2779 | ||
79072805 | 2780 | OP * |
131b3ad0 | 2781 | Perl_pmruntime(pTHX_ OP *o, OP *expr, bool isreg) |
79072805 | 2782 | { |
27da23d5 | 2783 | dVAR; |
79072805 LW |
2784 | PMOP *pm; |
2785 | LOGOP *rcop; | |
ce862d02 | 2786 | I32 repl_has_vars = 0; |
5f66b61c | 2787 | OP* repl = NULL; |
131b3ad0 DM |
2788 | bool reglist; |
2789 | ||
2790 | if (o->op_type == OP_SUBST || o->op_type == OP_TRANS) { | |
2791 | /* last element in list is the replacement; pop it */ | |
2792 | OP* kid; | |
2793 | repl = cLISTOPx(expr)->op_last; | |
2794 | kid = cLISTOPx(expr)->op_first; | |
2795 | while (kid->op_sibling != repl) | |
2796 | kid = kid->op_sibling; | |
5f66b61c | 2797 | kid->op_sibling = NULL; |
131b3ad0 DM |
2798 | cLISTOPx(expr)->op_last = kid; |
2799 | } | |
79072805 | 2800 | |
131b3ad0 DM |
2801 | if (isreg && expr->op_type == OP_LIST && |
2802 | cLISTOPx(expr)->op_first->op_sibling == cLISTOPx(expr)->op_last) | |
2803 | { | |
2804 | /* convert single element list to element */ | |
0bd48802 | 2805 | OP* const oe = expr; |
131b3ad0 | 2806 | expr = cLISTOPx(oe)->op_first->op_sibling; |
5f66b61c AL |
2807 | cLISTOPx(oe)->op_first->op_sibling = NULL; |
2808 | cLISTOPx(oe)->op_last = NULL; | |
131b3ad0 DM |
2809 | op_free(oe); |
2810 | } | |
2811 | ||
2812 | if (o->op_type == OP_TRANS) { | |
11343788 | 2813 | return pmtrans(o, expr, repl); |
131b3ad0 DM |
2814 | } |
2815 | ||
2816 | reglist = isreg && expr->op_type == OP_LIST; | |
2817 | if (reglist) | |
2818 | op_null(expr); | |
79072805 | 2819 | |
3280af22 | 2820 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 2821 | pm = (PMOP*)o; |
79072805 LW |
2822 | |
2823 | if (expr->op_type == OP_CONST) { | |
463ee0b2 | 2824 | STRLEN plen; |
6136c704 | 2825 | SV * const pat = ((SVOP*)expr)->op_sv; |
5c144d81 | 2826 | const char *p = SvPV_const(pat, plen); |
770526c1 | 2827 | if ((o->op_flags & OPf_SPECIAL) && (*p == ' ' && p[1] == '\0')) { |
5c144d81 NC |
2828 | U32 was_readonly = SvREADONLY(pat); |
2829 | ||
2830 | if (was_readonly) { | |
2831 | if (SvFAKE(pat)) { | |
2832 | sv_force_normal_flags(pat, 0); | |
2833 | assert(!SvREADONLY(pat)); | |
2834 | was_readonly = 0; | |
2835 | } else { | |
2836 | SvREADONLY_off(pat); | |
2837 | } | |
2838 | } | |
2839 | ||
93a17b20 | 2840 | sv_setpvn(pat, "\\s+", 3); |
5c144d81 NC |
2841 | |
2842 | SvFLAGS(pat) |= was_readonly; | |
2843 | ||
2844 | p = SvPV_const(pat, plen); | |
79072805 LW |
2845 | pm->op_pmflags |= PMf_SKIPWHITE; |
2846 | } | |
5b71a6a7 | 2847 | if (DO_UTF8(pat)) |
a5961de5 | 2848 | pm->op_pmdynflags |= PMdf_UTF8; |
5c144d81 NC |
2849 | /* FIXME - can we make this function take const char * args? */ |
2850 | PM_SETRE(pm, CALLREGCOMP(aTHX_ (char*)p, (char*)p + plen, pm)); | |
aaa362c4 | 2851 | if (strEQ("\\s+", PM_GETRE(pm)->precomp)) |
85e6fe83 | 2852 | pm->op_pmflags |= PMf_WHITE; |
79072805 LW |
2853 | op_free(expr); |
2854 | } | |
2855 | else { | |
3280af22 | 2856 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) |
1c846c1f | 2857 | expr = newUNOP((!(PL_hints & HINT_RE_EVAL) |
2cd61cdb IZ |
2858 | ? OP_REGCRESET |
2859 | : OP_REGCMAYBE),0,expr); | |
463ee0b2 | 2860 | |
b7dc083c | 2861 | NewOp(1101, rcop, 1, LOGOP); |
79072805 | 2862 | rcop->op_type = OP_REGCOMP; |
22c35a8c | 2863 | rcop->op_ppaddr = PL_ppaddr[OP_REGCOMP]; |
79072805 | 2864 | rcop->op_first = scalar(expr); |
131b3ad0 DM |
2865 | rcop->op_flags |= OPf_KIDS |
2866 | | ((PL_hints & HINT_RE_EVAL) ? OPf_SPECIAL : 0) | |
2867 | | (reglist ? OPf_STACKED : 0); | |
79072805 | 2868 | rcop->op_private = 1; |
11343788 | 2869 | rcop->op_other = o; |
131b3ad0 DM |
2870 | if (reglist) |
2871 | rcop->op_targ = pad_alloc(rcop->op_type, SVs_PADTMP); | |
2872 | ||
b5c19bd7 DM |
2873 | /* /$x/ may cause an eval, since $x might be qr/(?{..})/ */ |
2874 | PL_cv_has_eval = 1; | |
79072805 LW |
2875 | |
2876 | /* establish postfix order */ | |
3280af22 | 2877 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) { |
463ee0b2 LW |
2878 | LINKLIST(expr); |
2879 | rcop->op_next = expr; | |
2880 | ((UNOP*)expr)->op_first->op_next = (OP*)rcop; | |
2881 | } | |
2882 | else { | |
2883 | rcop->op_next = LINKLIST(expr); | |
2884 | expr->op_next = (OP*)rcop; | |
2885 | } | |
79072805 | 2886 | |
11343788 | 2887 | prepend_elem(o->op_type, scalar((OP*)rcop), o); |
79072805 LW |
2888 | } |
2889 | ||
2890 | if (repl) { | |
748a9306 | 2891 | OP *curop; |
0244c3a4 | 2892 | if (pm->op_pmflags & PMf_EVAL) { |
6136c704 | 2893 | curop = NULL; |
8bafa735 | 2894 | if (CopLINE(PL_curcop) < (line_t)PL_multi_end) |
eb160463 | 2895 | CopLINE_set(PL_curcop, (line_t)PL_multi_end); |
0244c3a4 | 2896 | } |
748a9306 LW |
2897 | else if (repl->op_type == OP_CONST) |
2898 | curop = repl; | |
79072805 | 2899 | else { |
c445ea15 | 2900 | OP *lastop = NULL; |
79072805 | 2901 | for (curop = LINKLIST(repl); curop!=repl; curop = LINKLIST(curop)) { |
22c35a8c | 2902 | if (PL_opargs[curop->op_type] & OA_DANGEROUS) { |
79072805 | 2903 | if (curop->op_type == OP_GV) { |
6136c704 | 2904 | GV * const gv = cGVOPx_gv(curop); |
ce862d02 | 2905 | repl_has_vars = 1; |
f702bf4a | 2906 | if (strchr("&`'123456789+-\016\022", *GvENAME(gv))) |
79072805 LW |
2907 | break; |
2908 | } | |
2909 | else if (curop->op_type == OP_RV2CV) | |
2910 | break; | |
2911 | else if (curop->op_type == OP_RV2SV || | |
2912 | curop->op_type == OP_RV2AV || | |
2913 | curop->op_type == OP_RV2HV || | |
2914 | curop->op_type == OP_RV2GV) { | |
2915 | if (lastop && lastop->op_type != OP_GV) /*funny deref?*/ | |
2916 | break; | |
2917 | } | |
748a9306 LW |
2918 | else if (curop->op_type == OP_PADSV || |
2919 | curop->op_type == OP_PADAV || | |
2920 | curop->op_type == OP_PADHV || | |
554b3eca | 2921 | curop->op_type == OP_PADANY) { |
ce862d02 | 2922 | repl_has_vars = 1; |
748a9306 | 2923 | } |
1167e5da | 2924 | else if (curop->op_type == OP_PUSHRE) |
bb263b4e | 2925 | /*EMPTY*/; /* Okay here, dangerous in newASSIGNOP */ |
79072805 LW |
2926 | else |
2927 | break; | |
2928 | } | |
2929 | lastop = curop; | |
2930 | } | |
748a9306 | 2931 | } |
ce862d02 | 2932 | if (curop == repl |
1c846c1f | 2933 | && !(repl_has_vars |
aaa362c4 RS |
2934 | && (!PM_GETRE(pm) |
2935 | || PM_GETRE(pm)->reganch & ROPT_EVAL_SEEN))) { | |
748a9306 | 2936 | pm->op_pmflags |= PMf_CONST; /* const for long enough */ |
4633a7c4 | 2937 | pm->op_pmpermflags |= PMf_CONST; /* const for long enough */ |
11343788 | 2938 | prepend_elem(o->op_type, scalar(repl), o); |
748a9306 LW |
2939 | } |
2940 | else { | |
aaa362c4 | 2941 | if (curop == repl && !PM_GETRE(pm)) { /* Has variables. */ |
ce862d02 IZ |
2942 | pm->op_pmflags |= PMf_MAYBE_CONST; |
2943 | pm->op_pmpermflags |= PMf_MAYBE_CONST; | |
2944 | } | |
b7dc083c | 2945 | NewOp(1101, rcop, 1, LOGOP); |
748a9306 | 2946 | rcop->op_type = OP_SUBSTCONT; |
22c35a8c | 2947 | rcop->op_ppaddr = PL_ppaddr[OP_SUBSTCONT]; |
748a9306 LW |
2948 | rcop->op_first = scalar(repl); |
2949 | rcop->op_flags |= OPf_KIDS; | |
2950 | rcop->op_private = 1; | |
11343788 | 2951 | rcop->op_other = o; |
748a9306 LW |
2952 | |
2953 | /* establish postfix order */ | |
2954 | rcop->op_next = LINKLIST(repl); | |
2955 | repl->op_next = (OP*)rcop; | |
2956 | ||
2957 | pm->op_pmreplroot = scalar((OP*)rcop); | |
2958 | pm->op_pmreplstart = LINKLIST(rcop); | |
2959 | rcop->op_next = 0; | |
79072805 LW |
2960 | } |
2961 | } | |
2962 | ||
2963 | return (OP*)pm; | |
2964 | } | |
2965 | ||
2966 | OP * | |
864dbfa3 | 2967 | Perl_newSVOP(pTHX_ I32 type, I32 flags, SV *sv) |
79072805 | 2968 | { |
27da23d5 | 2969 | dVAR; |
79072805 | 2970 | SVOP *svop; |
b7dc083c | 2971 | NewOp(1101, svop, 1, SVOP); |
eb160463 | 2972 | svop->op_type = (OPCODE)type; |
22c35a8c | 2973 | svop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2974 | svop->op_sv = sv; |
2975 | svop->op_next = (OP*)svop; | |
eb160463 | 2976 | svop->op_flags = (U8)flags; |
22c35a8c | 2977 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 2978 | scalar((OP*)svop); |
22c35a8c | 2979 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 2980 | svop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2981 | return CHECKOP(type, svop); |
79072805 LW |
2982 | } |
2983 | ||
2984 | OP * | |
350de78d GS |
2985 | Perl_newPADOP(pTHX_ I32 type, I32 flags, SV *sv) |
2986 | { | |
27da23d5 | 2987 | dVAR; |
350de78d GS |
2988 | PADOP *padop; |
2989 | NewOp(1101, padop, 1, PADOP); | |
eb160463 | 2990 | padop->op_type = (OPCODE)type; |
350de78d GS |
2991 | padop->op_ppaddr = PL_ppaddr[type]; |
2992 | padop->op_padix = pad_alloc(type, SVs_PADTMP); | |
dd2155a4 DM |
2993 | SvREFCNT_dec(PAD_SVl(padop->op_padix)); |
2994 | PAD_SETSV(padop->op_padix, sv); | |
ce50c033 AMS |
2995 | if (sv) |
2996 | SvPADTMP_on(sv); | |
350de78d | 2997 | padop->op_next = (OP*)padop; |
eb160463 | 2998 | padop->op_flags = (U8)flags; |
350de78d GS |
2999 | if (PL_opargs[type] & OA_RETSCALAR) |
3000 | scalar((OP*)padop); | |
3001 | if (PL_opargs[type] & OA_TARGET) | |
3002 | padop->op_targ = pad_alloc(type, SVs_PADTMP); | |
3003 | return CHECKOP(type, padop); | |
3004 | } | |
3005 | ||
3006 | OP * | |
864dbfa3 | 3007 | Perl_newGVOP(pTHX_ I32 type, I32 flags, GV *gv) |
79072805 | 3008 | { |
27da23d5 | 3009 | dVAR; |
350de78d | 3010 | #ifdef USE_ITHREADS |
ce50c033 AMS |
3011 | if (gv) |
3012 | GvIN_PAD_on(gv); | |
350de78d GS |
3013 | return newPADOP(type, flags, SvREFCNT_inc(gv)); |
3014 | #else | |
7934575e | 3015 | return newSVOP(type, flags, SvREFCNT_inc(gv)); |
350de78d | 3016 | #endif |
79072805 LW |
3017 | } |
3018 | ||
3019 | OP * | |
864dbfa3 | 3020 | Perl_newPVOP(pTHX_ I32 type, I32 flags, char *pv) |
79072805 | 3021 | { |
27da23d5 | 3022 | dVAR; |
79072805 | 3023 | PVOP *pvop; |
b7dc083c | 3024 | NewOp(1101, pvop, 1, PVOP); |
eb160463 | 3025 | pvop->op_type = (OPCODE)type; |
22c35a8c | 3026 | pvop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
3027 | pvop->op_pv = pv; |
3028 | pvop->op_next = (OP*)pvop; | |
eb160463 | 3029 | pvop->op_flags = (U8)flags; |
22c35a8c | 3030 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 3031 | scalar((OP*)pvop); |
22c35a8c | 3032 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 3033 | pvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 3034 | return CHECKOP(type, pvop); |
79072805 LW |
3035 | } |
3036 | ||
79072805 | 3037 | void |
864dbfa3 | 3038 | Perl_package(pTHX_ OP *o) |
79072805 | 3039 | { |
97aff369 | 3040 | dVAR; |
6867be6d | 3041 | const char *name; |
de11ba31 | 3042 | STRLEN len; |
79072805 | 3043 | |
3280af22 NIS |
3044 | save_hptr(&PL_curstash); |
3045 | save_item(PL_curstname); | |
de11ba31 | 3046 | |
5c144d81 | 3047 | name = SvPV_const(cSVOPo->op_sv, len); |
de11ba31 AMS |
3048 | PL_curstash = gv_stashpvn(name, len, TRUE); |
3049 | sv_setpvn(PL_curstname, name, len); | |
3050 | op_free(o); | |
3051 | ||
7ad382f4 | 3052 | PL_hints |= HINT_BLOCK_SCOPE; |
3280af22 NIS |
3053 | PL_copline = NOLINE; |
3054 | PL_expect = XSTATE; | |
79072805 LW |
3055 | } |
3056 | ||
85e6fe83 | 3057 | void |
88d95a4d | 3058 | Perl_utilize(pTHX_ int aver, I32 floor, OP *version, OP *idop, OP *arg) |
85e6fe83 | 3059 | { |
97aff369 | 3060 | dVAR; |
a0d0e21e | 3061 | OP *pack; |
a0d0e21e | 3062 | OP *imop; |
b1cb66bf | 3063 | OP *veop; |
85e6fe83 | 3064 | |
88d95a4d | 3065 | if (idop->op_type != OP_CONST) |
cea2e8a9 | 3066 | Perl_croak(aTHX_ "Module name must be constant"); |
85e6fe83 | 3067 | |
5f66b61c | 3068 | veop = NULL; |
b1cb66bf | 3069 | |
aec46f14 | 3070 | if (version) { |
551405c4 | 3071 | SV * const vesv = ((SVOP*)version)->op_sv; |
b1cb66bf | 3072 | |
aec46f14 | 3073 | if (!arg && !SvNIOKp(vesv)) { |
b1cb66bf | 3074 | arg = version; |
3075 | } | |
3076 | else { | |
3077 | OP *pack; | |
0f79a09d | 3078 | SV *meth; |
b1cb66bf | 3079 | |
44dcb63b | 3080 | if (version->op_type != OP_CONST || !SvNIOKp(vesv)) |
cea2e8a9 | 3081 | Perl_croak(aTHX_ "Version number must be constant number"); |
b1cb66bf | 3082 | |
88d95a4d JH |
3083 | /* Make copy of idop so we don't free it twice */ |
3084 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)idop)->op_sv)); | |
b1cb66bf | 3085 | |
3086 | /* Fake up a method call to VERSION */ | |
18916d0d | 3087 | meth = newSVpvs_share("VERSION"); |
b1cb66bf | 3088 | veop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, |
3089 | append_elem(OP_LIST, | |
0f79a09d GS |
3090 | prepend_elem(OP_LIST, pack, list(version)), |
3091 | newSVOP(OP_METHOD_NAMED, 0, meth))); | |
b1cb66bf | 3092 | } |
3093 | } | |
aeea060c | 3094 | |
a0d0e21e | 3095 | /* Fake up an import/unimport */ |
4633a7c4 LW |
3096 | if (arg && arg->op_type == OP_STUB) |
3097 | imop = arg; /* no import on explicit () */ | |
88d95a4d | 3098 | else if (SvNIOKp(((SVOP*)idop)->op_sv)) { |
5f66b61c | 3099 | imop = NULL; /* use 5.0; */ |
468aa647 RGS |
3100 | if (!aver) |
3101 | idop->op_private |= OPpCONST_NOVER; | |
b1cb66bf | 3102 | } |
4633a7c4 | 3103 | else { |
0f79a09d GS |
3104 | SV *meth; |
3105 | ||
88d95a4d JH |
3106 | /* Make copy of idop so we don't free it twice */ |
3107 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)idop)->op_sv)); | |
0f79a09d GS |
3108 | |
3109 | /* Fake up a method call to import/unimport */ | |
427d62a4 | 3110 | meth = aver |
18916d0d | 3111 | ? newSVpvs_share("import") : newSVpvs_share("unimport"); |
4633a7c4 | 3112 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, |
0f79a09d GS |
3113 | append_elem(OP_LIST, |
3114 | prepend_elem(OP_LIST, pack, list(arg)), | |
3115 | newSVOP(OP_METHOD_NAMED, 0, meth))); | |
4633a7c4 LW |
3116 | } |
3117 | ||
a0d0e21e | 3118 | /* Fake up the BEGIN {}, which does its thing immediately. */ |
09bef843 | 3119 | newATTRSUB(floor, |
18916d0d | 3120 | newSVOP(OP_CONST, 0, newSVpvs_share("BEGIN")), |
5f66b61c AL |
3121 | NULL, |
3122 | NULL, | |
a0d0e21e | 3123 | append_elem(OP_LINESEQ, |
b1cb66bf | 3124 | append_elem(OP_LINESEQ, |
bd61b366 SS |
3125 | newSTATEOP(0, NULL, newUNOP(OP_REQUIRE, 0, idop)), |
3126 | newSTATEOP(0, NULL, veop)), | |
3127 | newSTATEOP(0, NULL, imop) )); | |
85e6fe83 | 3128 | |
70f5e4ed JH |
3129 | /* The "did you use incorrect case?" warning used to be here. |
3130 | * The problem is that on case-insensitive filesystems one | |
3131 | * might get false positives for "use" (and "require"): | |
3132 | * "use Strict" or "require CARP" will work. This causes | |
3133 | * portability problems for the script: in case-strict | |
3134 | * filesystems the script will stop working. | |
3135 | * | |
3136 | * The "incorrect case" warning checked whether "use Foo" | |
3137 | * imported "Foo" to your namespace, but that is wrong, too: | |
3138 | * there is no requirement nor promise in the language that | |
3139 | * a Foo.pm should or would contain anything in package "Foo". | |
3140 | * | |
3141 | * There is very little Configure-wise that can be done, either: | |
3142 | * the case-sensitivity of the build filesystem of Perl does not | |
3143 | * help in guessing the case-sensitivity of the runtime environment. | |
3144 | */ | |
18fc9488 | 3145 | |
c305c6a0 | 3146 | PL_hints |= HINT_BLOCK_SCOPE; |
3280af22 NIS |
3147 | PL_copline = NOLINE; |
3148 | PL_expect = XSTATE; | |
8ec8fbef | 3149 | PL_cop_seqmax++; /* Purely for B::*'s benefit */ |
85e6fe83 LW |
3150 | } |
3151 | ||
7d3fb230 | 3152 | /* |
ccfc67b7 JH |
3153 | =head1 Embedding Functions |
3154 | ||
7d3fb230 BS |
3155 | =for apidoc load_module |
3156 | ||
3157 | Loads the module whose name is pointed to by the string part of name. | |
3158 | Note that the actual module name, not its filename, should be given. | |
3159 | Eg, "Foo::Bar" instead of "Foo/Bar.pm". flags can be any of | |
3160 | PERL_LOADMOD_DENY, PERL_LOADMOD_NOIMPORT, or PERL_LOADMOD_IMPORT_OPS | |
3161 | (or 0 for no flags). ver, if specified, provides version semantics | |
3162 | similar to C<use Foo::Bar VERSION>. The optional trailing SV* | |
3163 | arguments can be used to specify arguments to the module's import() | |
3164 | method, similar to C<use Foo::Bar VERSION LIST>. | |
3165 | ||
3166 | =cut */ | |
3167 | ||
e4783991 GS |
3168 | void |
3169 | Perl_load_module(pTHX_ U32 flags, SV *name, SV *ver, ...) | |
3170 | { | |
3171 | va_list args; | |
3172 | va_start(args, ver); | |
3173 | vload_module(flags, name, ver, &args); | |
3174 | va_end(args); | |
3175 | } | |
3176 | ||
3177 | #ifdef PERL_IMPLICIT_CONTEXT | |
3178 | void | |
3179 | Perl_load_module_nocontext(U32 flags, SV *name, SV *ver, ...) | |
3180 | { | |
3181 | dTHX; | |
3182 | va_list args; | |
3183 | va_start(args, ver); | |
3184 | vload_module(flags, name, ver, &args); | |
3185 | va_end(args); | |
3186 | } | |
3187 | #endif | |
3188 | ||
3189 | void | |
3190 | Perl_vload_module(pTHX_ U32 flags, SV *name, SV *ver, va_list *args) | |
3191 | { | |
97aff369 | 3192 | dVAR; |
551405c4 | 3193 | OP *veop, *imop; |
e4783991 | 3194 | |
551405c4 | 3195 | OP * const modname = newSVOP(OP_CONST, 0, name); |
e4783991 GS |
3196 | modname->op_private |= OPpCONST_BARE; |
3197 | if (ver) { | |
3198 | veop = newSVOP(OP_CONST, 0, ver); | |
3199 | } | |
3200 | else | |
5f66b61c | 3201 | veop = NULL; |
e4783991 GS |
3202 | if (flags & PERL_LOADMOD_NOIMPORT) { |
3203 | imop = sawparens(newNULLLIST()); | |
3204 | } | |
3205 | else if (flags & PERL_LOADMOD_IMPORT_OPS) { | |
3206 | imop = va_arg(*args, OP*); | |
3207 | } | |
3208 | else { | |
3209 | SV *sv; | |
5f66b61c | 3210 | imop = NULL; |
e4783991 GS |
3211 | sv = va_arg(*args, SV*); |
3212 | while (sv) { | |
3213 | imop = append_elem(OP_LIST, imop, newSVOP(OP_CONST, 0, sv)); | |
3214 | sv = va_arg(*args, SV*); | |
3215 | } | |
3216 | } | |
81885997 | 3217 | { |
6867be6d AL |
3218 | const line_t ocopline = PL_copline; |
3219 | COP * const ocurcop = PL_curcop; | |
3220 | const int oexpect = PL_expect; | |
81885997 GS |
3221 | |
3222 | utilize(!(flags & PERL_LOADMOD_DENY), start_subparse(FALSE, 0), | |
3223 | veop, modname, imop); | |
3224 | PL_expect = oexpect; | |
3225 | PL_copline = ocopline; | |
834a3ffa | 3226 | PL_curcop = ocurcop; |
81885997 | 3227 | } |
e4783991 GS |
3228 | } |
3229 | ||
79072805 | 3230 | OP * |
850e8516 | 3231 | Perl_dofile(pTHX_ OP *term, I32 force_builtin) |
78ca652e | 3232 | { |
97aff369 | 3233 | dVAR; |
78ca652e | 3234 | OP *doop; |
a0714e2c | 3235 | GV *gv = NULL; |
78ca652e | 3236 | |
850e8516 | 3237 | if (!force_builtin) { |
fafc274c | 3238 | gv = gv_fetchpvs("do", GV_NOTQUAL, SVt_PVCV); |
850e8516 | 3239 | if (!(gv && GvCVu(gv) && GvIMPORTED_CV(gv))) { |
a4fc7abc | 3240 | GV * const * const gvp = (GV**)hv_fetchs(PL_globalstash, "do", FALSE); |
a0714e2c | 3241 | gv = gvp ? *gvp : NULL; |
850e8516 RGS |
3242 | } |
3243 | } | |
78ca652e | 3244 | |
b9f751c0 | 3245 | if (gv && GvCVu(gv) && GvIMPORTED_CV(gv)) { |
78ca652e GS |
3246 | doop = ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, |
3247 | append_elem(OP_LIST, term, | |
3248 | scalar(newUNOP(OP_RV2CV, 0, | |
3249 | newGVOP(OP_GV, 0, | |
3250 | gv)))))); | |
3251 | } | |
3252 | else { | |
3253 | doop = newUNOP(OP_DOFILE, 0, scalar(term)); | |
3254 | } | |
3255 | return doop; | |
3256 | } | |
3257 | ||
3258 | OP * | |
864dbfa3 | 3259 | Perl_newSLICEOP(pTHX_ I32 flags, OP *subscript, OP *listval) |
79072805 LW |
3260 | { |
3261 | return newBINOP(OP_LSLICE, flags, | |
8990e307 LW |
3262 | list(force_list(subscript)), |
3263 | list(force_list(listval)) ); | |
79072805 LW |
3264 | } |
3265 | ||
76e3520e | 3266 | STATIC I32 |
504618e9 | 3267 | S_is_list_assignment(pTHX_ register const OP *o) |
79072805 | 3268 | { |
11343788 | 3269 | if (!o) |
79072805 LW |
3270 | return TRUE; |
3271 | ||
11343788 MB |
3272 | if (o->op_type == OP_NULL && o->op_flags & OPf_KIDS) |
3273 | o = cUNOPo->op_first; | |
79072805 | 3274 | |
11343788 | 3275 | if (o->op_type == OP_COND_EXPR) { |
504618e9 AL |
3276 | const I32 t = is_list_assignment(cLOGOPo->op_first->op_sibling); |
3277 | const I32 f = is_list_assignment(cLOGOPo->op_first->op_sibling->op_sibling); | |
79072805 LW |
3278 | |
3279 | if (t && f) | |
3280 | return TRUE; | |
3281 | if (t || f) | |
3282 | yyerror("Assignment to both a list and a scalar"); | |
3283 | return FALSE; | |
3284 | } | |
3285 | ||
95f0a2f1 SB |
3286 | if (o->op_type == OP_LIST && |
3287 | (o->op_flags & OPf_WANT) == OPf_WANT_SCALAR && | |
3288 | o->op_private & OPpLVAL_INTRO) | |
3289 | return FALSE; | |
3290 | ||
11343788 MB |
3291 | if (o->op_type == OP_LIST || o->op_flags & OPf_PARENS || |
3292 | o->op_type == OP_RV2AV || o->op_type == OP_RV2HV || | |
3293 | o->op_type == OP_ASLICE || o->op_type == OP_HSLICE) | |
79072805 LW |
3294 | return TRUE; |
3295 | ||
11343788 | 3296 | if (o->op_type == OP_PADAV || o->op_type == OP_PADHV) |
93a17b20 LW |
3297 | return TRUE; |
3298 | ||
11343788 | 3299 | if (o->op_type == OP_RV2SV) |
79072805 LW |
3300 | return FALSE; |
3301 | ||
3302 | return FALSE; | |
3303 | } | |
3304 | ||
3305 | OP * | |
864dbfa3 | 3306 | Perl_newASSIGNOP(pTHX_ I32 flags, OP *left, I32 optype, OP *right) |
79072805 | 3307 | { |
97aff369 | 3308 | dVAR; |
11343788 | 3309 | OP *o; |
79072805 | 3310 | |
a0d0e21e | 3311 | if (optype) { |
c963b151 | 3312 | if (optype == OP_ANDASSIGN || optype == OP_ORASSIGN || optype == OP_DORASSIGN) { |
a0d0e21e LW |
3313 | return newLOGOP(optype, 0, |
3314 | mod(scalar(left), optype), | |
3315 | newUNOP(OP_SASSIGN, 0, scalar(right))); | |
3316 | } | |
3317 | else { | |
3318 | return newBINOP(optype, OPf_STACKED, | |
3319 | mod(scalar(left), optype), scalar(right)); | |
3320 | } | |
3321 | } | |
3322 | ||
504618e9 | 3323 | if (is_list_assignment(left)) { |
10c8fecd GS |
3324 | OP *curop; |
3325 | ||
3280af22 | 3326 | PL_modcount = 0; |
dbfe47cf RD |
3327 | /* Grandfathering $[ assignment here. Bletch.*/ |
3328 | /* Only simple assignments like C<< ($[) = 1 >> are allowed */ | |
3329 | PL_eval_start = (left->op_type == OP_CONST) ? right : 0; | |
463ee0b2 | 3330 | left = mod(left, OP_AASSIGN); |
3280af22 NIS |
3331 | if (PL_eval_start) |
3332 | PL_eval_start = 0; | |
dbfe47cf RD |
3333 | else if (left->op_type == OP_CONST) { |
3334 | /* Result of assignment is always 1 (or we'd be dead already) */ | |
3335 | return newSVOP(OP_CONST, 0, newSViv(1)); | |
a0d0e21e | 3336 | } |
10c8fecd GS |
3337 | curop = list(force_list(left)); |
3338 | o = newBINOP(OP_AASSIGN, flags, list(force_list(right)), curop); | |
eb160463 | 3339 | o->op_private = (U8)(0 | (flags >> 8)); |
dd2155a4 DM |
3340 | |
3341 | /* PL_generation sorcery: | |
3342 | * an assignment like ($a,$b) = ($c,$d) is easier than | |
3343 | * ($a,$b) = ($c,$a), since there is no need for temporary vars. | |
3344 | * To detect whether there are common vars, the global var | |
3345 | * PL_generation is incremented for each assign op we compile. | |
3346 | * Then, while compiling the assign op, we run through all the | |
3347 | * variables on both sides of the assignment, setting a spare slot | |
3348 | * in each of them to PL_generation. If any of them already have | |
3349 | * that value, we know we've got commonality. We could use a | |
3350 | * single bit marker, but then we'd have to make 2 passes, first | |
3351 | * to clear the flag, then to test and set it. To find somewhere | |
3352 | * to store these values, evil chicanery is done with SvCUR(). | |
3353 | */ | |
3354 | ||
a0d0e21e | 3355 | if (!(left->op_private & OPpLVAL_INTRO)) { |
11343788 | 3356 | OP *lastop = o; |
3280af22 | 3357 | PL_generation++; |
11343788 | 3358 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
22c35a8c | 3359 | if (PL_opargs[curop->op_type] & OA_DANGEROUS) { |
79072805 | 3360 | if (curop->op_type == OP_GV) { |
638eceb6 | 3361 | GV *gv = cGVOPx_gv(curop); |
eb160463 | 3362 | if (gv == PL_defgv || (int)SvCUR(gv) == PL_generation) |
79072805 | 3363 | break; |
b162af07 | 3364 | SvCUR_set(gv, PL_generation); |
79072805 | 3365 | } |
748a9306 LW |
3366 | else if (curop->op_type == OP_PADSV || |
3367 | curop->op_type == OP_PADAV || | |
3368 | curop->op_type == OP_PADHV || | |
dd2155a4 DM |
3369 | curop->op_type == OP_PADANY) |
3370 | { | |
3371 | if (PAD_COMPNAME_GEN(curop->op_targ) | |
92251a1e | 3372 | == (STRLEN)PL_generation) |
748a9306 | 3373 | break; |
b162af07 | 3374 | PAD_COMPNAME_GEN_set(curop->op_targ, PL_generation); |
dd2155a4 | 3375 | |
748a9306 | 3376 | } |
79072805 LW |
3377 | else if (curop->op_type == OP_RV2CV) |
3378 | break; | |
3379 | else if (curop->op_type == OP_RV2SV || | |
3380 | curop->op_type == OP_RV2AV || | |
3381 | curop->op_type == OP_RV2HV || | |
3382 | curop->op_type == OP_RV2GV) { | |
3383 | if (lastop->op_type != OP_GV) /* funny deref? */ | |
3384 | break; | |
3385 | } | |
1167e5da SM |
3386 | else if (curop->op_type == OP_PUSHRE) { |
3387 | if (((PMOP*)curop)->op_pmreplroot) { | |
b3f5893f | 3388 | #ifdef USE_ITHREADS |
dd2155a4 DM |
3389 | GV *gv = (GV*)PAD_SVl(INT2PTR(PADOFFSET, |
3390 | ((PMOP*)curop)->op_pmreplroot)); | |
b3f5893f | 3391 | #else |
1167e5da | 3392 | GV *gv = (GV*)((PMOP*)curop)->op_pmreplroot; |
b3f5893f | 3393 | #endif |
eb160463 | 3394 | if (gv == PL_defgv || (int)SvCUR(gv) == PL_generation) |
1167e5da | 3395 | break; |
b162af07 | 3396 | SvCUR_set(gv, PL_generation); |
b2ffa427 | 3397 | } |
1167e5da | 3398 | } |
79072805 LW |
3399 | else |
3400 | break; | |
3401 | } | |
3402 | lastop = curop; | |
3403 | } | |
11343788 | 3404 | if (curop != o) |
10c8fecd | 3405 | o->op_private |= OPpASSIGN_COMMON; |
79072805 | 3406 | } |
c07a80fd | 3407 | if (right && right->op_type == OP_SPLIT) { |
3408 | OP* tmpop; | |
3409 | if ((tmpop = ((LISTOP*)right)->op_first) && | |
3410 | tmpop->op_type == OP_PUSHRE) | |
3411 | { | |
551405c4 | 3412 | PMOP * const pm = (PMOP*)tmpop; |
c07a80fd | 3413 | if (left->op_type == OP_RV2AV && |
3414 | !(left->op_private & OPpLVAL_INTRO) && | |
11343788 | 3415 | !(o->op_private & OPpASSIGN_COMMON) ) |
c07a80fd | 3416 | { |
3417 | tmpop = ((UNOP*)left)->op_first; | |
3418 | if (tmpop->op_type == OP_GV && !pm->op_pmreplroot) { | |
971a9dd3 | 3419 | #ifdef USE_ITHREADS |
ba89bb6e | 3420 | pm->op_pmreplroot = INT2PTR(OP*, cPADOPx(tmpop)->op_padix); |
971a9dd3 GS |
3421 | cPADOPx(tmpop)->op_padix = 0; /* steal it */ |
3422 | #else | |
3423 | pm->op_pmreplroot = (OP*)cSVOPx(tmpop)->op_sv; | |
a0714e2c | 3424 | cSVOPx(tmpop)->op_sv = NULL; /* steal it */ |
971a9dd3 | 3425 | #endif |
c07a80fd | 3426 | pm->op_pmflags |= PMf_ONCE; |
11343788 | 3427 | tmpop = cUNOPo->op_first; /* to list (nulled) */ |
c07a80fd | 3428 | tmpop = ((UNOP*)tmpop)->op_first; /* to pushmark */ |
5f66b61c | 3429 | tmpop->op_sibling = NULL; /* don't free split */ |
c07a80fd | 3430 | right->op_next = tmpop->op_next; /* fix starting loc */ |
11343788 | 3431 | op_free(o); /* blow off assign */ |
54310121 | 3432 | right->op_flags &= ~OPf_WANT; |
a5f75d66 | 3433 | /* "I don't know and I don't care." */ |
c07a80fd | 3434 | return right; |
3435 | } | |
3436 | } | |
3437 | else { | |
e6438c1a | 3438 | if (PL_modcount < RETURN_UNLIMITED_NUMBER && |
c07a80fd | 3439 | ((LISTOP*)right)->op_last->op_type == OP_CONST) |
3440 | { | |
3441 | SV *sv = ((SVOP*)((LISTOP*)right)->op_last)->op_sv; | |
3442 | if (SvIVX(sv) == 0) | |
3280af22 | 3443 | sv_setiv(sv, PL_modcount+1); |
c07a80fd | 3444 | } |
3445 | } | |
3446 | } | |
3447 | } | |
11343788 | 3448 | return o; |
79072805 LW |
3449 | } |
3450 | if (!right) | |
3451 | right = newOP(OP_UNDEF, 0); | |
3452 | if (right->op_type == OP_READLINE) { | |
3453 | right->op_flags |= OPf_STACKED; | |
463ee0b2 | 3454 | return newBINOP(OP_NULL, flags, mod(scalar(left), OP_SASSIGN), scalar(right)); |
79072805 | 3455 | } |
a0d0e21e | 3456 | else { |
3280af22 | 3457 | PL_eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ |
11343788 | 3458 | o = newBINOP(OP_SASSIGN, flags, |
463ee0b2 | 3459 | scalar(right), mod(scalar(left), OP_SASSIGN) ); |
3280af22 NIS |
3460 | if (PL_eval_start) |
3461 | PL_eval_start = 0; | |
748a9306 | 3462 | else { |
dbfe47cf | 3463 | o = newSVOP(OP_CONST, 0, newSViv(PL_compiling.cop_arybase)); |
a0d0e21e LW |
3464 | } |
3465 | } | |
11343788 | 3466 | return o; |
79072805 LW |
3467 | } |
3468 | ||
3469 | OP * | |
864dbfa3 | 3470 | Perl_newSTATEOP(pTHX_ I32 flags, char *label, OP *o) |
79072805 | 3471 | { |
27da23d5 | 3472 | dVAR; |
e1ec3a88 | 3473 | const U32 seq = intro_my(); |
79072805 LW |
3474 | register COP *cop; |
3475 | ||
b7dc083c | 3476 | NewOp(1101, cop, 1, COP); |
57843af0 | 3477 | if (PERLDB_LINE && CopLINE(PL_curcop) && PL_curstash != PL_debstash) { |
8990e307 | 3478 | cop->op_type = OP_DBSTATE; |
22c35a8c | 3479 | cop->op_ppaddr = PL_ppaddr[ OP_DBSTATE ]; |
8990e307 LW |
3480 | } |
3481 | else { | |
3482 | cop->op_type = OP_NEXTSTATE; | |
22c35a8c | 3483 | cop->op_ppaddr = PL_ppaddr[ OP_NEXTSTATE ]; |
8990e307 | 3484 | } |
eb160463 GS |
3485 | cop->op_flags = (U8)flags; |
3486 | cop->op_private = (U8)(PL_hints & HINT_PRIVATE_MASK); | |
ff0cee69 | 3487 | #ifdef NATIVE_HINTS |
3488 | cop->op_private |= NATIVE_HINTS; | |
3489 | #endif | |
e24b16f9 | 3490 | PL_compiling.op_private = cop->op_private; |
79072805 LW |
3491 | cop->op_next = (OP*)cop; |
3492 | ||
463ee0b2 LW |
3493 | if (label) { |
3494 | cop->cop_label = label; | |
3280af22 | 3495 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 3496 | } |
bbce6d69 | 3497 | cop->cop_seq = seq; |
3280af22 | 3498 | cop->cop_arybase = PL_curcop->cop_arybase; |
0453d815 | 3499 | if (specialWARN(PL_curcop->cop_warnings)) |
599cee73 | 3500 | cop->cop_warnings = PL_curcop->cop_warnings ; |
1c846c1f | 3501 | else |
599cee73 | 3502 | cop->cop_warnings = newSVsv(PL_curcop->cop_warnings) ; |
ac27b0f5 NIS |
3503 | if (specialCopIO(PL_curcop->cop_io)) |
3504 | cop->cop_io = PL_curcop->cop_io; | |
3505 | else | |
3506 | cop->cop_io = newSVsv(PL_curcop->cop_io) ; | |
599cee73 | 3507 | |
79072805 | 3508 | |
3280af22 | 3509 | if (PL_copline == NOLINE) |
57843af0 | 3510 | CopLINE_set(cop, CopLINE(PL_curcop)); |
79072805 | 3511 | else { |
57843af0 | 3512 | CopLINE_set(cop, PL_copline); |
3280af22 | 3513 | PL_copline = NOLINE; |
79072805 | 3514 | } |
57843af0 | 3515 | #ifdef USE_ITHREADS |
f4dd75d9 | 3516 | CopFILE_set(cop, CopFILE(PL_curcop)); /* XXX share in a pvtable? */ |
57843af0 | 3517 | #else |
f4dd75d9 | 3518 | CopFILEGV_set(cop, CopFILEGV(PL_curcop)); |
57843af0 | 3519 | #endif |
11faa288 | 3520 | CopSTASH_set(cop, PL_curstash); |
79072805 | 3521 | |
3280af22 | 3522 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
fe8247eb | 3523 | SV * const * const svp = av_fetch(CopFILEAVx(PL_curcop), (I32)CopLINE(cop), FALSE); |
2d03de9c AL |
3524 | if (svp && *svp != &PL_sv_undef ) { |
3525 | (void)SvIOK_on(*svp); | |
45977657 | 3526 | SvIV_set(*svp, PTR2IV(cop)); |
1eb1540c | 3527 | } |
93a17b20 LW |
3528 | } |
3529 | ||
722969e2 | 3530 | return prepend_elem(OP_LINESEQ, (OP*)cop, o); |
79072805 LW |
3531 | } |
3532 | ||
bbce6d69 | 3533 | |
79072805 | 3534 | OP * |
864dbfa3 | 3535 | Perl_newLOGOP(pTHX_ I32 type, I32 flags, OP *first, OP *other) |
79072805 | 3536 | { |
27da23d5 | 3537 | dVAR; |
883ffac3 CS |
3538 | return new_logop(type, flags, &first, &other); |
3539 | } | |
3540 | ||
3bd495df | 3541 | STATIC OP * |
cea2e8a9 | 3542 | S_new_logop(pTHX_ I32 type, I32 flags, OP** firstp, OP** otherp) |
883ffac3 | 3543 | { |
27da23d5 | 3544 | dVAR; |
79072805 | 3545 | LOGOP *logop; |
11343788 | 3546 | OP *o; |
883ffac3 | 3547 | OP *first = *firstp; |
b22e6366 | 3548 | OP * const other = *otherp; |
79072805 | 3549 | |
a0d0e21e LW |
3550 | if (type == OP_XOR) /* Not short circuit, but here by precedence. */ |
3551 | return newBINOP(type, flags, scalar(first), scalar(other)); | |
3552 | ||
8990e307 | 3553 | scalarboolean(first); |
79072805 LW |
3554 | /* optimize "!a && b" to "a || b", and "!a || b" to "a && b" */ |
3555 | if (first->op_type == OP_NOT && (first->op_flags & OPf_SPECIAL)) { | |
3556 | if (type == OP_AND || type == OP_OR) { | |
3557 | if (type == OP_AND) | |
3558 | type = OP_OR; | |
3559 | else | |
3560 | type = OP_AND; | |
11343788 | 3561 | o = first; |
883ffac3 | 3562 | first = *firstp = cUNOPo->op_first; |
11343788 MB |
3563 | if (o->op_next) |
3564 | first->op_next = o->op_next; | |
5f66b61c | 3565 | cUNOPo->op_first = NULL; |
11343788 | 3566 | op_free(o); |
79072805 LW |
3567 | } |
3568 | } | |
3569 | if (first->op_type == OP_CONST) { | |
39a440a3 DM |
3570 | if (first->op_private & OPpCONST_STRICT) |
3571 | no_bareword_allowed(first); | |
041457d9 | 3572 | else if ((first->op_private & OPpCONST_BARE) && ckWARN(WARN_BAREWORD)) |
989dfb19 | 3573 | Perl_warner(aTHX_ packWARN(WARN_BAREWORD), "Bareword found in conditional"); |
75cc09e4 MHM |
3574 | if ((type == OP_AND && SvTRUE(((SVOP*)first)->op_sv)) || |
3575 | (type == OP_OR && !SvTRUE(((SVOP*)first)->op_sv)) || | |
3576 | (type == OP_DOR && !SvOK(((SVOP*)first)->op_sv))) { | |
79072805 | 3577 | op_free(first); |
5f66b61c | 3578 | *firstp = NULL; |
d6fee5c7 DM |
3579 | if (other->op_type == OP_CONST) |
3580 | other->op_private |= OPpCONST_SHORTCIRCUIT; | |
79072805 LW |
3581 | return other; |
3582 | } | |
3583 | else { | |
7921d0f2 | 3584 | /* check for C<my $x if 0>, or C<my($x,$y) if 0> */ |
6867be6d | 3585 | const OP *o2 = other; |
7921d0f2 DM |
3586 | if ( ! (o2->op_type == OP_LIST |
3587 | && (( o2 = cUNOPx(o2)->op_first)) | |
3588 | && o2->op_type == OP_PUSHMARK | |
3589 | && (( o2 = o2->op_sibling)) ) | |
3590 | ) | |
3591 | o2 = other; | |
3592 | if ((o2->op_type == OP_PADSV || o2->op_type == OP_PADAV | |
3593 | || o2->op_type == OP_PADHV) | |
3594 | && o2->op_private & OPpLVAL_INTRO | |
3595 | && ckWARN(WARN_DEPRECATED)) | |
3596 | { | |
3597 | Perl_warner(aTHX_ packWARN(WARN_DEPRECATED), | |
3598 | "Deprecated use of my() in false conditional"); | |
3599 | } | |
3600 | ||
79072805 | 3601 | op_free(other); |
5f66b61c | 3602 | *otherp = NULL; |
d6fee5c7 DM |
3603 | if (first->op_type == OP_CONST) |
3604 | first->op_private |= OPpCONST_SHORTCIRCUIT; | |
79072805 LW |
3605 | return first; |
3606 | } | |
3607 | } | |
041457d9 DM |
3608 | else if ((first->op_flags & OPf_KIDS) && type != OP_DOR |
3609 | && ckWARN(WARN_MISC)) /* [#24076] Don't warn for <FH> err FOO. */ | |
59e10468 | 3610 | { |
b22e6366 AL |
3611 | const OP * const k1 = ((UNOP*)first)->op_first; |
3612 | const OP * const k2 = k1->op_sibling; | |
a6006777 | 3613 | OPCODE warnop = 0; |
3614 | switch (first->op_type) | |
3615 | { | |
3616 | case OP_NULL: | |
3617 | if (k2 && k2->op_type == OP_READLINE | |
3618 | && (k2->op_flags & OPf_STACKED) | |
1c846c1f | 3619 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
72b16652 | 3620 | { |
a6006777 | 3621 | warnop = k2->op_type; |
72b16652 | 3622 | } |
a6006777 | 3623 | break; |
3624 | ||
3625 | case OP_SASSIGN: | |
68dc0745 | 3626 | if (k1->op_type == OP_READDIR |
3627 | || k1->op_type == OP_GLOB | |
72b16652 | 3628 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) |
68dc0745 | 3629 | || k1->op_type == OP_EACH) |
72b16652 GS |
3630 | { |
3631 | warnop = ((k1->op_type == OP_NULL) | |
eb160463 | 3632 | ? (OPCODE)k1->op_targ : k1->op_type); |
72b16652 | 3633 | } |
a6006777 | 3634 | break; |
3635 | } | |
8ebc5c01 | 3636 | if (warnop) { |
6867be6d | 3637 | const line_t oldline = CopLINE(PL_curcop); |
57843af0 | 3638 | CopLINE_set(PL_curcop, PL_copline); |
9014280d | 3639 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
599cee73 | 3640 | "Value of %s%s can be \"0\"; test with defined()", |
22c35a8c | 3641 | PL_op_desc[warnop], |
68dc0745 | 3642 | ((warnop == OP_READLINE || warnop == OP_GLOB) |
3643 | ? " construct" : "() operator")); | |
57843af0 | 3644 | CopLINE_set(PL_curcop, oldline); |
8ebc5c01 | 3645 | } |
a6006777 | 3646 | } |
79072805 LW |
3647 | |
3648 | if (!other) | |
3649 | return first; | |
3650 | ||
c963b151 | 3651 | if (type == OP_ANDASSIGN || type == OP_ORASSIGN || type == OP_DORASSIGN) |
a0d0e21e LW |
3652 | other->op_private |= OPpASSIGN_BACKWARDS; /* other is an OP_SASSIGN */ |
3653 | ||
b7dc083c | 3654 | NewOp(1101, logop, 1, LOGOP); |
79072805 | 3655 | |
eb160463 | 3656 | logop->op_type = (OPCODE)type; |
22c35a8c | 3657 | logop->op_ppaddr = PL_ppaddr[type]; |
79072805 | 3658 | logop->op_first = first; |
585ec06d | 3659 | logop->op_flags = (U8)(flags | OPf_KIDS); |
79072805 | 3660 | logop->op_other = LINKLIST(other); |
eb160463 | 3661 | logop->op_private = (U8)(1 | (flags >> 8)); |
79072805 LW |
3662 | |
3663 | /* establish postfix order */ | |
3664 | logop->op_next = LINKLIST(first); | |
3665 | first->op_next = (OP*)logop; | |
3666 | first->op_sibling = other; | |
3667 | ||
463d09e6 RGS |
3668 | CHECKOP(type,logop); |
3669 | ||
11343788 MB |
3670 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
3671 | other->op_next = o; | |
79072805 | 3672 | |
11343788 | 3673 | return o; |
79072805 LW |
3674 | } |
3675 | ||
3676 | OP * | |
864dbfa3 | 3677 | Perl_newCONDOP(pTHX_ I32 flags, OP *first, OP *trueop, OP *falseop) |
79072805 | 3678 | { |
27da23d5 | 3679 | dVAR; |
1a67a97c SM |
3680 | LOGOP *logop; |
3681 | OP *start; | |
11343788 | 3682 | OP *o; |
79072805 | 3683 | |
b1cb66bf | 3684 | if (!falseop) |
3685 | return newLOGOP(OP_AND, 0, first, trueop); | |
3686 | if (!trueop) | |
3687 | return newLOGOP(OP_OR, 0, first, falseop); | |
79072805 | 3688 | |
8990e307 | 3689 | scalarboolean(first); |
79072805 | 3690 | if (first->op_type == OP_CONST) { |
2bc6235c | 3691 | if (first->op_private & OPpCONST_BARE && |
b22e6366 AL |
3692 | first->op_private & OPpCONST_STRICT) { |
3693 | no_bareword_allowed(first); | |
3694 | } | |
79072805 LW |
3695 | if (SvTRUE(((SVOP*)first)->op_sv)) { |
3696 | op_free(first); | |
b1cb66bf | 3697 | op_free(falseop); |
3698 | return trueop; | |
79072805 LW |
3699 | } |
3700 | else { | |
3701 | op_free(first); | |
b1cb66bf | 3702 | op_free(trueop); |
3703 | return falseop; | |
79072805 LW |
3704 | } |
3705 | } | |
1a67a97c SM |
3706 | NewOp(1101, logop, 1, LOGOP); |
3707 | logop->op_type = OP_COND_EXPR; | |
3708 | logop->op_ppaddr = PL_ppaddr[OP_COND_EXPR]; | |
3709 | logop->op_first = first; | |
585ec06d | 3710 | logop->op_flags = (U8)(flags | OPf_KIDS); |
eb160463 | 3711 | logop->op_private = (U8)(1 | (flags >> 8)); |
1a67a97c SM |
3712 | logop->op_other = LINKLIST(trueop); |
3713 | logop->op_next = LINKLIST(falseop); | |
79072805 | 3714 | |
463d09e6 RGS |
3715 | CHECKOP(OP_COND_EXPR, /* that's logop->op_type */ |
3716 | logop); | |
79072805 LW |
3717 | |
3718 | /* establish postfix order */ | |
1a67a97c SM |
3719 | start = LINKLIST(first); |
3720 | first->op_next = (OP*)logop; | |
79072805 | 3721 | |
b1cb66bf | 3722 | first->op_sibling = trueop; |
3723 | trueop->op_sibling = falseop; | |
1a67a97c | 3724 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
79072805 | 3725 | |
1a67a97c | 3726 | trueop->op_next = falseop->op_next = o; |
79072805 | 3727 | |
1a67a97c | 3728 | o->op_next = start; |
11343788 | 3729 | return o; |
79072805 LW |
3730 | } |
3731 | ||
3732 | OP * | |
864dbfa3 | 3733 | Perl_newRANGE(pTHX_ I32 flags, OP *left, OP *right) |
79072805 | 3734 | { |
27da23d5 | 3735 | dVAR; |
1a67a97c | 3736 | LOGOP *range; |
79072805 LW |
3737 | OP *flip; |
3738 | OP *flop; | |
1a67a97c | 3739 | OP *leftstart; |
11343788 | 3740 | OP *o; |
79072805 | 3741 | |
1a67a97c | 3742 | NewOp(1101, range, 1, LOGOP); |
79072805 | 3743 | |
1a67a97c SM |
3744 | range->op_type = OP_RANGE; |
3745 | range->op_ppaddr = PL_ppaddr[OP_RANGE]; | |
3746 | range->op_first = left; | |
3747 | range->op_flags = OPf_KIDS; | |
3748 | leftstart = LINKLIST(left); | |
3749 | range->op_other = LINKLIST(right); | |
eb160463 | 3750 | range->op_private = (U8)(1 | (flags >> 8)); |
79072805 LW |
3751 | |
3752 | left->op_sibling = right; | |
3753 | ||
1a67a97c SM |
3754 | range->op_next = (OP*)range; |
3755 | flip = newUNOP(OP_FLIP, flags, (OP*)range); | |
79072805 | 3756 | flop = newUNOP(OP_FLOP, 0, flip); |
11343788 | 3757 | o = newUNOP(OP_NULL, 0, flop); |
79072805 | 3758 | linklist(flop); |
1a67a97c | 3759 | range->op_next = leftstart; |
79072805 LW |
3760 | |
3761 | left->op_next = flip; | |
3762 | right->op_next = flop; | |
3763 | ||
1a67a97c SM |
3764 | range->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
3765 | sv_upgrade(PAD_SV(range->op_targ), SVt_PVNV); | |
ed6116ce | 3766 | flip->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 LW |
3767 | sv_upgrade(PAD_SV(flip->op_targ), SVt_PVNV); |
3768 | ||
3769 | flip->op_private = left->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
3770 | flop->op_private = right->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
3771 | ||
11343788 | 3772 | flip->op_next = o; |
79072805 | 3773 | if (!flip->op_private || !flop->op_private) |
11343788 | 3774 | linklist(o); /* blow off optimizer unless constant */ |
79072805 | 3775 | |
11343788 | 3776 | return o; |
79072805 LW |
3777 | } |
3778 | ||
3779 | OP * | |
864dbfa3 | 3780 | Perl_newLOOPOP(pTHX_ I32 flags, I32 debuggable, OP *expr, OP *block) |
79072805 | 3781 | { |
97aff369 | 3782 | dVAR; |
463ee0b2 | 3783 | OP* listop; |
11343788 | 3784 | OP* o; |
73d840c0 | 3785 | const bool once = block && block->op_flags & OPf_SPECIAL && |
a0d0e21e | 3786 | (block->op_type == OP_ENTERSUB || block->op_type == OP_NULL); |
46c461b5 AL |
3787 | |
3788 | PERL_UNUSED_ARG(debuggable); | |
93a17b20 | 3789 | |
463ee0b2 LW |
3790 | if (expr) { |
3791 | if (once && expr->op_type == OP_CONST && !SvTRUE(((SVOP*)expr)->op_sv)) | |
3792 | return block; /* do {} while 0 does once */ | |
fb73857a | 3793 | if (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB |
3794 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB)) { | |
774d564b | 3795 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 3796 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 | 3797 | } else if (expr->op_flags & OPf_KIDS) { |
46c461b5 AL |
3798 | const OP * const k1 = ((UNOP*)expr)->op_first; |
3799 | const OP * const k2 = k1 ? k1->op_sibling : NULL; | |
55d729e4 | 3800 | switch (expr->op_type) { |
1c846c1f | 3801 | case OP_NULL: |
55d729e4 GS |
3802 | if (k2 && k2->op_type == OP_READLINE |
3803 | && (k2->op_flags & OPf_STACKED) | |
1c846c1f | 3804 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
55d729e4 | 3805 | expr = newUNOP(OP_DEFINED, 0, expr); |
1c846c1f | 3806 | break; |
55d729e4 GS |
3807 | |
3808 | case OP_SASSIGN: | |
3809 | if (k1->op_type == OP_READDIR | |
3810 | || k1->op_type == OP_GLOB | |
6531c3e6 | 3811 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) |
55d729e4 GS |
3812 | || k1->op_type == OP_EACH) |
3813 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3814 | break; | |
3815 | } | |
774d564b | 3816 | } |
463ee0b2 | 3817 | } |
93a17b20 | 3818 | |
e1548254 RGS |
3819 | /* if block is null, the next append_elem() would put UNSTACK, a scalar |
3820 | * op, in listop. This is wrong. [perl #27024] */ | |
3821 | if (!block) | |
3822 | block = newOP(OP_NULL, 0); | |
8990e307 | 3823 | listop = append_elem(OP_LINESEQ, block, newOP(OP_UNSTACK, 0)); |
883ffac3 | 3824 | o = new_logop(OP_AND, 0, &expr, &listop); |
463ee0b2 | 3825 | |
883ffac3 CS |
3826 | if (listop) |
3827 | ((LISTOP*)listop)->op_last->op_next = LINKLIST(o); | |
79072805 | 3828 | |
11343788 MB |
3829 | if (once && o != listop) |
3830 | o->op_next = ((LOGOP*)cUNOPo->op_first)->op_other; | |
79072805 | 3831 | |
11343788 MB |
3832 | if (o == listop) |
3833 | o = newUNOP(OP_NULL, 0, o); /* or do {} while 1 loses outer block */ | |
748a9306 | 3834 | |
11343788 MB |
3835 | o->op_flags |= flags; |
3836 | o = scope(o); | |
3837 | o->op_flags |= OPf_SPECIAL; /* suppress POPBLOCK curpm restoration*/ | |
3838 | return o; | |
79072805 LW |
3839 | } |
3840 | ||
3841 | OP * | |
a034e688 DM |
3842 | Perl_newWHILEOP(pTHX_ I32 flags, I32 debuggable, LOOP *loop, I32 |
3843 | whileline, OP *expr, OP *block, OP *cont, I32 has_my) | |
79072805 | 3844 | { |
27da23d5 | 3845 | dVAR; |
79072805 | 3846 | OP *redo; |
c445ea15 | 3847 | OP *next = NULL; |
79072805 | 3848 | OP *listop; |
11343788 | 3849 | OP *o; |
1ba6ee2b | 3850 | U8 loopflags = 0; |
46c461b5 AL |
3851 | |
3852 | PERL_UNUSED_ARG(debuggable); | |
79072805 | 3853 | |
2d03de9c AL |
3854 | if (expr) { |
3855 | if (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB | |
3856 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB)) { | |
3857 | expr = newUNOP(OP_DEFINED, 0, | |
3858 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); | |
3859 | } else if (expr->op_flags & OPf_KIDS) { | |
3860 | const OP * const k1 = ((UNOP*)expr)->op_first; | |
3861 | const OP * const k2 = (k1) ? k1->op_sibling : NULL; | |
3862 | switch (expr->op_type) { | |
3863 | case OP_NULL: | |
3864 | if (k2 && k2->op_type == OP_READLINE | |
3865 | && (k2->op_flags & OPf_STACKED) | |
3866 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) | |
3867 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3868 | break; | |
55d729e4 | 3869 | |
2d03de9c AL |
3870 | case OP_SASSIGN: |
3871 | if (k1->op_type == OP_READDIR | |
3872 | || k1->op_type == OP_GLOB | |
3873 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) | |
3874 | || k1->op_type == OP_EACH) | |
3875 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3876 | break; | |
3877 | } | |
55d729e4 | 3878 | } |
748a9306 | 3879 | } |
79072805 LW |
3880 | |
3881 | if (!block) | |
3882 | block = newOP(OP_NULL, 0); | |
a034e688 | 3883 | else if (cont || has_my) { |
87246558 GS |
3884 | block = scope(block); |
3885 | } | |
79072805 | 3886 | |
1ba6ee2b | 3887 | if (cont) { |
79072805 | 3888 | next = LINKLIST(cont); |
1ba6ee2b | 3889 | } |
fb73857a | 3890 | if (expr) { |
551405c4 | 3891 | OP * const unstack = newOP(OP_UNSTACK, 0); |
85538317 GS |
3892 | if (!next) |
3893 | next = unstack; | |
3894 | cont = append_elem(OP_LINESEQ, cont, unstack); | |
fb73857a | 3895 | } |
79072805 | 3896 | |
463ee0b2 | 3897 | listop = append_list(OP_LINESEQ, (LISTOP*)block, (LISTOP*)cont); |
79072805 LW |
3898 | redo = LINKLIST(listop); |
3899 | ||
3900 | if (expr) { | |
eb160463 | 3901 | PL_copline = (line_t)whileline; |
883ffac3 CS |
3902 | scalar(listop); |
3903 | o = new_logop(OP_AND, 0, &expr, &listop); | |
11343788 | 3904 | if (o == expr && o->op_type == OP_CONST && !SvTRUE(cSVOPo->op_sv)) { |
85e6fe83 | 3905 | op_free(expr); /* oops, it's a while (0) */ |
463ee0b2 | 3906 | op_free((OP*)loop); |
5f66b61c | 3907 | return NULL; /* listop already freed by new_logop */ |
463ee0b2 | 3908 | } |
883ffac3 | 3909 | if (listop) |
497b47a8 | 3910 | ((LISTOP*)listop)->op_last->op_next = |
883ffac3 | 3911 | (o == listop ? redo : LINKLIST(o)); |
79072805 LW |
3912 | } |
3913 | else | |
11343788 | 3914 | o = listop; |
79072805 LW |
3915 | |
3916 | if (!loop) { | |
b7dc083c | 3917 | NewOp(1101,loop,1,LOOP); |
79072805 | 3918 | loop->op_type = OP_ENTERLOOP; |
22c35a8c | 3919 | loop->op_ppaddr = PL_ppaddr[OP_ENTERLOOP]; |
79072805 LW |
3920 | loop->op_private = 0; |
3921 | loop->op_next = (OP*)loop; | |
3922 | } | |
3923 | ||
11343788 | 3924 | o = newBINOP(OP_LEAVELOOP, 0, (OP*)loop, o); |
79072805 LW |
3925 | |
3926 | loop->op_redoop = redo; | |
11343788 | 3927 | loop->op_lastop = o; |
1ba6ee2b | 3928 | o->op_private |= loopflags; |
79072805 LW |
3929 | |
3930 | if (next) | |
3931 | loop->op_nextop = next; | |
3932 | else | |
11343788 | 3933 | loop->op_nextop = o; |
79072805 | 3934 | |
11343788 MB |
3935 | o->op_flags |= flags; |
3936 | o->op_private |= (flags >> 8); | |
3937 | return o; | |
79072805 LW |
3938 | } |
3939 | ||
3940 | OP * | |
66a1b24b | 3941 | Perl_newFOROP(pTHX_ I32 flags, char *label, line_t forline, OP *sv, OP *expr, OP *block, OP *cont) |
79072805 | 3942 | { |
27da23d5 | 3943 | dVAR; |
79072805 | 3944 | LOOP *loop; |
fb73857a | 3945 | OP *wop; |
4bbc6d12 | 3946 | PADOFFSET padoff = 0; |
4633a7c4 | 3947 | I32 iterflags = 0; |
241416b8 | 3948 | I32 iterpflags = 0; |
79072805 | 3949 | |
79072805 | 3950 | if (sv) { |
85e6fe83 | 3951 | if (sv->op_type == OP_RV2SV) { /* symbol table variable */ |
241416b8 | 3952 | iterpflags = sv->op_private & OPpOUR_INTRO; /* for our $x () */ |
748a9306 | 3953 | sv->op_type = OP_RV2GV; |
22c35a8c | 3954 | sv->op_ppaddr = PL_ppaddr[OP_RV2GV]; |
0d863452 RH |
3955 | if (cGVOPx_gv(cUNOPx(sv)->op_first) == PL_defgv) |
3956 | iterpflags |= OPpITER_DEF; | |
79072805 | 3957 | } |
85e6fe83 | 3958 | else if (sv->op_type == OP_PADSV) { /* private variable */ |
241416b8 | 3959 | iterpflags = sv->op_private & OPpLVAL_INTRO; /* for my $x () */ |
85e6fe83 | 3960 | padoff = sv->op_targ; |
743e66e6 | 3961 | sv->op_targ = 0; |
85e6fe83 | 3962 | op_free(sv); |
5f66b61c | 3963 | sv = NULL; |
85e6fe83 | 3964 | } |
54b9620d MB |
3965 | else if (sv->op_type == OP_THREADSV) { /* per-thread variable */ |
3966 | padoff = sv->op_targ; | |
743e66e6 | 3967 | sv->op_targ = 0; |
54b9620d MB |
3968 | iterflags |= OPf_SPECIAL; |
3969 | op_free(sv); | |
5f66b61c | 3970 | sv = NULL; |
54b9620d | 3971 | } |
79072805 | 3972 | else |
cea2e8a9 | 3973 | Perl_croak(aTHX_ "Can't use %s for loop variable", PL_op_desc[sv->op_type]); |
0d863452 RH |
3974 | if (padoff && strEQ(PAD_COMPNAME_PV(padoff), "$_")) |
3975 | iterpflags |= OPpITER_DEF; | |
79072805 LW |
3976 | } |
3977 | else { | |
73d840c0 | 3978 | const I32 offset = pad_findmy("$_"); |
aabe9514 RGS |
3979 | if (offset == NOT_IN_PAD || PAD_COMPNAME_FLAGS(offset) & SVpad_OUR) { |
3980 | sv = newGVOP(OP_GV, 0, PL_defgv); | |
3981 | } | |
3982 | else { | |
3983 | padoff = offset; | |
aabe9514 | 3984 | } |
0d863452 | 3985 | iterpflags |= OPpITER_DEF; |
79072805 | 3986 | } |
5f05dabc | 3987 | if (expr->op_type == OP_RV2AV || expr->op_type == OP_PADAV) { |
89ea2908 | 3988 | expr = mod(force_list(scalar(ref(expr, OP_ITER))), OP_GREPSTART); |
4633a7c4 LW |
3989 | iterflags |= OPf_STACKED; |
3990 | } | |
89ea2908 GA |
3991 | else if (expr->op_type == OP_NULL && |
3992 | (expr->op_flags & OPf_KIDS) && | |
3993 | ((BINOP*)expr)->op_first->op_type == OP_FLOP) | |
3994 | { | |
3995 | /* Basically turn for($x..$y) into the same as for($x,$y), but we | |
3996 | * set the STACKED flag to indicate that these values are to be | |
3997 | * treated as min/max values by 'pp_iterinit'. | |
3998 | */ | |
551405c4 AL |
3999 | UNOP* const flip = (UNOP*)((UNOP*)((BINOP*)expr)->op_first)->op_first; |
4000 | LOGOP* const range = (LOGOP*) flip->op_first; | |
66a1b24b AL |
4001 | OP* const left = range->op_first; |
4002 | OP* const right = left->op_sibling; | |
5152d7c7 | 4003 | LISTOP* listop; |
89ea2908 GA |
4004 | |
4005 | range->op_flags &= ~OPf_KIDS; | |
5f66b61c | 4006 | range->op_first = NULL; |
89ea2908 | 4007 | |
5152d7c7 | 4008 | listop = (LISTOP*)newLISTOP(OP_LIST, 0, left, right); |
1a67a97c SM |
4009 | listop->op_first->op_next = range->op_next; |
4010 | left->op_next = range->op_other; | |
5152d7c7 GS |
4011 | right->op_next = (OP*)listop; |
4012 | listop->op_next = listop->op_first; | |
89ea2908 GA |
4013 | |
4014 | op_free(expr); | |
5152d7c7 | 4015 | expr = (OP*)(listop); |
93c66552 | 4016 | op_null(expr); |
89ea2908 GA |
4017 | iterflags |= OPf_STACKED; |
4018 | } | |
4019 | else { | |
4020 | expr = mod(force_list(expr), OP_GREPSTART); | |
4021 | } | |
4022 | ||
4633a7c4 | 4023 | loop = (LOOP*)list(convert(OP_ENTERITER, iterflags, |
89ea2908 | 4024 | append_elem(OP_LIST, expr, scalar(sv)))); |
85e6fe83 | 4025 | assert(!loop->op_next); |
241416b8 | 4026 | /* for my $x () sets OPpLVAL_INTRO; |
14f338dc | 4027 | * for our $x () sets OPpOUR_INTRO */ |
c5661c80 | 4028 | loop->op_private = (U8)iterpflags; |
b7dc083c | 4029 | #ifdef PL_OP_SLAB_ALLOC |
155aba94 GS |
4030 | { |
4031 | LOOP *tmp; | |
4032 | NewOp(1234,tmp,1,LOOP); | |
bd5f3bc4 | 4033 | Copy(loop,tmp,1,LISTOP); |
238a4c30 | 4034 | FreeOp(loop); |
155aba94 GS |
4035 | loop = tmp; |
4036 | } | |
b7dc083c | 4037 | #else |
85e6fe83 | 4038 | Renew(loop, 1, LOOP); |
1c846c1f | 4039 | #endif |
85e6fe83 | 4040 | loop->op_targ = padoff; |
a034e688 | 4041 | wop = newWHILEOP(flags, 1, loop, forline, newOP(OP_ITER, 0), block, cont, 0); |
3280af22 | 4042 | PL_copline = forline; |
fb73857a | 4043 | return newSTATEOP(0, label, wop); |
79072805 LW |
4044 | } |
4045 | ||
8990e307 | 4046 | OP* |
864dbfa3 | 4047 | Perl_newLOOPEX(pTHX_ I32 type, OP *label) |
8990e307 | 4048 | { |
97aff369 | 4049 | dVAR; |
11343788 | 4050 | OP *o; |
2d8e6c8d | 4051 | |
8990e307 | 4052 | if (type != OP_GOTO || label->op_type == OP_CONST) { |
cdaebead MB |
4053 | /* "last()" means "last" */ |
4054 | if (label->op_type == OP_STUB && (label->op_flags & OPf_PARENS)) | |
4055 | o = newOP(type, OPf_SPECIAL); | |
4056 | else { | |
4057 | o = newPVOP(type, 0, savepv(label->op_type == OP_CONST | |
8b6b16e7 | 4058 | ? SvPVx_nolen_const(((SVOP*)label)->op_sv) |
cdaebead MB |
4059 | : "")); |
4060 | } | |
8990e307 LW |
4061 | op_free(label); |
4062 | } | |
4063 | else { | |
e3aba57a RGS |
4064 | /* Check whether it's going to be a goto &function */ |
4065 | if (label->op_type == OP_ENTERSUB | |
4066 | && !(label->op_flags & OPf_STACKED)) | |
a0d0e21e | 4067 | label = newUNOP(OP_REFGEN, 0, mod(label, OP_REFGEN)); |
11343788 | 4068 | o = newUNOP(type, OPf_STACKED, label); |
8990e307 | 4069 | } |
3280af22 | 4070 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 4071 | return o; |
8990e307 LW |
4072 | } |
4073 | ||
0d863452 RH |
4074 | /* if the condition is a literal array or hash |
4075 | (or @{ ... } etc), make a reference to it. | |
4076 | */ | |
4077 | STATIC OP * | |
4078 | S_ref_array_or_hash(pTHX_ OP *cond) | |
4079 | { | |
4080 | if (cond | |
4081 | && (cond->op_type == OP_RV2AV | |
4082 | || cond->op_type == OP_PADAV | |
4083 | || cond->op_type == OP_RV2HV | |
4084 | || cond->op_type == OP_PADHV)) | |
4085 | ||
4086 | return newUNOP(OP_REFGEN, | |
4087 | 0, mod(cond, OP_REFGEN)); | |
4088 | ||
4089 | else | |
4090 | return cond; | |
4091 | } | |
4092 | ||
4093 | /* These construct the optree fragments representing given() | |
4094 | and when() blocks. | |
4095 | ||
4096 | entergiven and enterwhen are LOGOPs; the op_other pointer | |
4097 | points up to the associated leave op. We need this so we | |
4098 | can put it in the context and make break/continue work. | |
4099 | (Also, of course, pp_enterwhen will jump straight to | |
4100 | op_other if the match fails.) | |
4101 | */ | |
4102 | ||
4103 | STATIC | |
4104 | OP * | |
4105 | S_newGIVWHENOP(pTHX_ OP *cond, OP *block, | |
4106 | I32 enter_opcode, I32 leave_opcode, | |
4107 | PADOFFSET entertarg) | |
4108 | { | |
97aff369 | 4109 | dVAR; |
0d863452 RH |
4110 | LOGOP *enterop; |
4111 | OP *o; | |
4112 | ||
4113 | NewOp(1101, enterop, 1, LOGOP); | |
4114 | enterop->op_type = enter_opcode; | |
4115 | enterop->op_ppaddr = PL_ppaddr[enter_opcode]; | |
4116 | enterop->op_flags = (U8) OPf_KIDS; | |
4117 | enterop->op_targ = ((entertarg == NOT_IN_PAD) ? 0 : entertarg); | |
4118 | enterop->op_private = 0; | |
4119 | ||
4120 | o = newUNOP(leave_opcode, 0, (OP *) enterop); | |
4121 | ||
4122 | if (cond) { | |
4123 | enterop->op_first = scalar(cond); | |
4124 | cond->op_sibling = block; | |
4125 | ||
4126 | o->op_next = LINKLIST(cond); | |
4127 | cond->op_next = (OP *) enterop; | |
4128 | } | |
4129 | else { | |
4130 | /* This is a default {} block */ | |
4131 | enterop->op_first = block; | |
4132 | enterop->op_flags |= OPf_SPECIAL; | |
4133 | ||
4134 | o->op_next = (OP *) enterop; | |
4135 | } | |
4136 | ||
4137 | CHECKOP(enter_opcode, enterop); /* Currently does nothing, since | |
4138 | entergiven and enterwhen both | |
4139 | use ck_null() */ | |
4140 | ||
4141 | enterop->op_next = LINKLIST(block); | |
4142 | block->op_next = enterop->op_other = o; | |
4143 | ||
4144 | return o; | |
4145 | } | |
4146 | ||
4147 | /* Does this look like a boolean operation? For these purposes | |
4148 | a boolean operation is: | |
4149 | - a subroutine call [*] | |
4150 | - a logical connective | |
4151 | - a comparison operator | |
4152 | - a filetest operator, with the exception of -s -M -A -C | |
4153 | - defined(), exists() or eof() | |
4154 | - /$re/ or $foo =~ /$re/ | |
4155 | ||
4156 | [*] possibly surprising | |
4157 | */ | |
4158 | STATIC | |
4159 | bool | |
4160 | S_looks_like_bool(pTHX_ OP *o) | |
4161 | { | |
97aff369 | 4162 | dVAR; |
0d863452 RH |
4163 | switch(o->op_type) { |
4164 | case OP_OR: | |
4165 | return looks_like_bool(cLOGOPo->op_first); | |
4166 | ||
4167 | case OP_AND: | |
4168 | return ( | |
4169 | looks_like_bool(cLOGOPo->op_first) | |
4170 | && looks_like_bool(cLOGOPo->op_first->op_sibling)); | |
4171 | ||
4172 | case OP_ENTERSUB: | |
4173 | ||
4174 | case OP_NOT: case OP_XOR: | |
4175 | /* Note that OP_DOR is not here */ | |
4176 | ||
4177 | case OP_EQ: case OP_NE: case OP_LT: | |
4178 | case OP_GT: case OP_LE: case OP_GE: | |
4179 | ||
4180 | case OP_I_EQ: case OP_I_NE: case OP_I_LT: | |
4181 | case OP_I_GT: case OP_I_LE: case OP_I_GE: | |
4182 | ||
4183 | case OP_SEQ: case OP_SNE: case OP_SLT: | |
4184 | case OP_SGT: case OP_SLE: case OP_SGE: | |
4185 | ||
4186 | case OP_SMARTMATCH: | |
4187 | ||
4188 | case OP_FTRREAD: case OP_FTRWRITE: case OP_FTREXEC: | |
4189 | case OP_FTEREAD: case OP_FTEWRITE: case OP_FTEEXEC: | |
4190 | case OP_FTIS: case OP_FTEOWNED: case OP_FTROWNED: | |
4191 | case OP_FTZERO: case OP_FTSOCK: case OP_FTCHR: | |
4192 | case OP_FTBLK: case OP_FTFILE: case OP_FTDIR: | |
4193 | case OP_FTPIPE: case OP_FTLINK: case OP_FTSUID: | |
4194 | case OP_FTSGID: case OP_FTSVTX: case OP_FTTTY: | |
4195 | case OP_FTTEXT: case OP_FTBINARY: | |
4196 | ||
4197 | case OP_DEFINED: case OP_EXISTS: | |
4198 | case OP_MATCH: case OP_EOF: | |
4199 | ||
4200 | return TRUE; | |
4201 | ||
4202 | case OP_CONST: | |
4203 | /* Detect comparisons that have been optimized away */ | |
4204 | if (cSVOPo->op_sv == &PL_sv_yes | |
4205 | || cSVOPo->op_sv == &PL_sv_no) | |
4206 | ||
4207 | return TRUE; | |
4208 | ||
4209 | /* FALL THROUGH */ | |
4210 | default: | |
4211 | return FALSE; | |
4212 | } | |
4213 | } | |
4214 | ||
4215 | OP * | |
4216 | Perl_newGIVENOP(pTHX_ OP *cond, OP *block, PADOFFSET defsv_off) | |
4217 | { | |
97aff369 | 4218 | dVAR; |
0d863452 RH |
4219 | assert( cond ); |
4220 | return newGIVWHENOP( | |
4221 | ref_array_or_hash(cond), | |
4222 | block, | |
4223 | OP_ENTERGIVEN, OP_LEAVEGIVEN, | |
4224 | defsv_off); | |
4225 | } | |
4226 | ||
4227 | /* If cond is null, this is a default {} block */ | |
4228 | OP * | |
4229 | Perl_newWHENOP(pTHX_ OP *cond, OP *block) | |
4230 | { | |
4231 | bool cond_llb = (!cond || looks_like_bool(cond)); | |
4232 | OP *cond_op; | |
4233 | ||
4234 | if (cond_llb) | |
4235 | cond_op = cond; | |
4236 | else { | |
4237 | cond_op = newBINOP(OP_SMARTMATCH, OPf_SPECIAL, | |
4238 | newDEFSVOP(), | |
4239 | scalar(ref_array_or_hash(cond))); | |
4240 | } | |
4241 | ||
4242 | return newGIVWHENOP( | |
4243 | cond_op, | |
4244 | append_elem(block->op_type, block, newOP(OP_BREAK, OPf_SPECIAL)), | |
4245 | OP_ENTERWHEN, OP_LEAVEWHEN, 0); | |
4246 | } | |
4247 | ||
7dafbf52 DM |
4248 | /* |
4249 | =for apidoc cv_undef | |
4250 | ||
4251 | Clear out all the active components of a CV. This can happen either | |
4252 | by an explicit C<undef &foo>, or by the reference count going to zero. | |
4253 | In the former case, we keep the CvOUTSIDE pointer, so that any anonymous | |
4254 | children can still follow the full lexical scope chain. | |
4255 | ||
4256 | =cut | |
4257 | */ | |
4258 | ||
79072805 | 4259 | void |
864dbfa3 | 4260 | Perl_cv_undef(pTHX_ CV *cv) |
79072805 | 4261 | { |
27da23d5 | 4262 | dVAR; |
a636914a | 4263 | #ifdef USE_ITHREADS |
aed2304a | 4264 | if (CvFILE(cv) && !CvISXSUB(cv)) { |
35f1c1c7 | 4265 | /* for XSUBs CvFILE point directly to static memory; __FILE__ */ |
a636914a | 4266 | Safefree(CvFILE(cv)); |
a636914a | 4267 | } |
f3e31eb5 | 4268 | CvFILE(cv) = 0; |
a636914a RH |
4269 | #endif |
4270 | ||
aed2304a | 4271 | if (!CvISXSUB(cv) && CvROOT(cv)) { |
bb172083 | 4272 | if (SvTYPE(cv) == SVt_PVCV && CvDEPTH(cv)) |
cea2e8a9 | 4273 | Perl_croak(aTHX_ "Can't undef active subroutine"); |
8990e307 | 4274 | ENTER; |
a0d0e21e | 4275 | |
f3548bdc | 4276 | PAD_SAVE_SETNULLPAD(); |
a0d0e21e | 4277 | |
282f25c9 | 4278 | op_free(CvROOT(cv)); |
5f66b61c AL |
4279 | CvROOT(cv) = NULL; |
4280 | CvSTART(cv) = NULL; | |
8990e307 | 4281 | LEAVE; |
79072805 | 4282 | } |
1d5db326 | 4283 | SvPOK_off((SV*)cv); /* forget prototype */ |
a0714e2c | 4284 | CvGV(cv) = NULL; |
a3985cdc DM |
4285 | |
4286 | pad_undef(cv); | |
4287 | ||
7dafbf52 DM |
4288 | /* remove CvOUTSIDE unless this is an undef rather than a free */ |
4289 | if (!SvREFCNT(cv) && CvOUTSIDE(cv)) { | |
4290 | if (!CvWEAKOUTSIDE(cv)) | |
4291 | SvREFCNT_dec(CvOUTSIDE(cv)); | |
601f1833 | 4292 | CvOUTSIDE(cv) = NULL; |
7dafbf52 | 4293 | } |
beab0874 JT |
4294 | if (CvCONST(cv)) { |
4295 | SvREFCNT_dec((SV*)CvXSUBANY(cv).any_ptr); | |
4296 | CvCONST_off(cv); | |
4297 | } | |
d04ba589 | 4298 | if (CvISXSUB(cv) && CvXSUB(cv)) { |
50762d59 DM |
4299 | CvXSUB(cv) = 0; |
4300 | } | |
7dafbf52 DM |
4301 | /* delete all flags except WEAKOUTSIDE */ |
4302 | CvFLAGS(cv) &= CVf_WEAKOUTSIDE; | |
79072805 LW |
4303 | } |
4304 | ||
3fe9a6f1 | 4305 | void |
35a4481c | 4306 | Perl_cv_ckproto(pTHX_ const CV *cv, const GV *gv, const char *p) |
3fe9a6f1 | 4307 | { |
b15aece3 | 4308 | if (((!p != !SvPOK(cv)) || (p && strNE(p, SvPVX_const(cv)))) && ckWARN_d(WARN_PROTOTYPE)) { |
2d03de9c | 4309 | SV* const msg = sv_newmortal(); |
a0714e2c | 4310 | SV* name = NULL; |
3fe9a6f1 | 4311 | |
4312 | if (gv) | |
bd61b366 | 4313 | gv_efullname3(name = sv_newmortal(), gv, NULL); |
46fc3d4c | 4314 | sv_setpv(msg, "Prototype mismatch:"); |
4315 | if (name) | |
894356b3 | 4316 | Perl_sv_catpvf(aTHX_ msg, " sub %"SVf, name); |
3fe9a6f1 | 4317 | if (SvPOK(cv)) |
e1ec3a88 | 4318 | Perl_sv_catpvf(aTHX_ msg, " (%"SVf")", (const SV *)cv); |
ebe643b9 | 4319 | else |
396482e1 GA |
4320 | sv_catpvs(msg, ": none"); |
4321 | sv_catpvs(msg, " vs "); | |
46fc3d4c | 4322 | if (p) |
cea2e8a9 | 4323 | Perl_sv_catpvf(aTHX_ msg, "(%s)", p); |
46fc3d4c | 4324 | else |
396482e1 | 4325 | sv_catpvs(msg, "none"); |
9014280d | 4326 | Perl_warner(aTHX_ packWARN(WARN_PROTOTYPE), "%"SVf, msg); |
3fe9a6f1 | 4327 | } |
4328 | } | |
4329 | ||
35f1c1c7 SB |
4330 | static void const_sv_xsub(pTHX_ CV* cv); |
4331 | ||
beab0874 | 4332 | /* |
ccfc67b7 JH |
4333 | |
4334 | =head1 Optree Manipulation Functions | |
4335 | ||
beab0874 JT |
4336 | =for apidoc cv_const_sv |
4337 | ||
4338 | If C<cv> is a constant sub eligible for inlining. returns the constant | |
4339 | value returned by the sub. Otherwise, returns NULL. | |
4340 | ||
4341 | Constant subs can be created with C<newCONSTSUB> or as described in | |
4342 | L<perlsub/"Constant Functions">. | |
4343 | ||
4344 | =cut | |
4345 | */ | |
760ac839 | 4346 | SV * |
864dbfa3 | 4347 | Perl_cv_const_sv(pTHX_ CV *cv) |
760ac839 | 4348 | { |
5069cc75 NC |
4349 | if (!cv) |
4350 | return NULL; | |
4351 | if (!(SvTYPE(cv) == SVt_PVCV || SvTYPE(cv) == SVt_PVFM)) | |
4352 | return NULL; | |
4353 | return CvCONST(cv) ? (SV*)CvXSUBANY(cv).any_ptr : NULL; | |
fe5e78ed | 4354 | } |
760ac839 | 4355 | |
b5c19bd7 DM |
4356 | /* op_const_sv: examine an optree to determine whether it's in-lineable. |
4357 | * Can be called in 3 ways: | |
4358 | * | |
4359 | * !cv | |
4360 | * look for a single OP_CONST with attached value: return the value | |
4361 | * | |
4362 | * cv && CvCLONE(cv) && !CvCONST(cv) | |
4363 | * | |
4364 | * examine the clone prototype, and if contains only a single | |
4365 | * OP_CONST referencing a pad const, or a single PADSV referencing | |
4366 | * an outer lexical, return a non-zero value to indicate the CV is | |
4367 | * a candidate for "constizing" at clone time | |
4368 | * | |
4369 | * cv && CvCONST(cv) | |
4370 | * | |
4371 | * We have just cloned an anon prototype that was marked as a const | |
4372 | * candidiate. Try to grab the current value, and in the case of | |
4373 | * PADSV, ignore it if it has multiple references. Return the value. | |
4374 | */ | |
4375 | ||
fe5e78ed | 4376 | SV * |
6867be6d | 4377 | Perl_op_const_sv(pTHX_ const OP *o, CV *cv) |
fe5e78ed | 4378 | { |
97aff369 | 4379 | dVAR; |
a0714e2c | 4380 | SV *sv = NULL; |
fe5e78ed | 4381 | |
0f79a09d | 4382 | if (!o) |
a0714e2c | 4383 | return NULL; |
1c846c1f NIS |
4384 | |
4385 | if (o->op_type == OP_LINESEQ && cLISTOPo->op_first) | |
fe5e78ed GS |
4386 | o = cLISTOPo->op_first->op_sibling; |
4387 | ||
4388 | for (; o; o = o->op_next) { | |
890ce7af | 4389 | const OPCODE type = o->op_type; |
fe5e78ed | 4390 | |
1c846c1f | 4391 | if (sv && o->op_next == o) |
fe5e78ed | 4392 | return sv; |
e576b457 JT |
4393 | if (o->op_next != o) { |
4394 | if (type == OP_NEXTSTATE || type == OP_NULL || type == OP_PUSHMARK) | |
4395 | continue; | |
4396 | if (type == OP_DBSTATE) | |
4397 | continue; | |
4398 | } | |
54310121 | 4399 | if (type == OP_LEAVESUB || type == OP_RETURN) |
4400 | break; | |
4401 | if (sv) | |
a0714e2c | 4402 | return NULL; |
7766f137 | 4403 | if (type == OP_CONST && cSVOPo->op_sv) |
5dc0d613 | 4404 | sv = cSVOPo->op_sv; |
b5c19bd7 | 4405 | else if (cv && type == OP_CONST) { |
dd2155a4 | 4406 | sv = PAD_BASE_SV(CvPADLIST(cv), o->op_targ); |
beab0874 | 4407 | if (!sv) |
a0714e2c | 4408 | return NULL; |
b5c19bd7 DM |
4409 | } |
4410 | else if (cv && type == OP_PADSV) { | |
4411 | if (CvCONST(cv)) { /* newly cloned anon */ | |
4412 | sv = PAD_BASE_SV(CvPADLIST(cv), o->op_targ); | |
4413 | /* the candidate should have 1 ref from this pad and 1 ref | |
4414 | * from the parent */ | |
4415 | if (!sv || SvREFCNT(sv) != 2) | |
a0714e2c | 4416 | return NULL; |
beab0874 | 4417 | sv = newSVsv(sv); |
b5c19bd7 DM |
4418 | SvREADONLY_on(sv); |
4419 | return sv; | |
4420 | } | |
4421 | else { | |
4422 | if (PAD_COMPNAME_FLAGS(o->op_targ) & SVf_FAKE) | |
4423 | sv = &PL_sv_undef; /* an arbitrary non-null value */ | |
beab0874 | 4424 | } |
760ac839 | 4425 | } |
b5c19bd7 | 4426 | else { |
a0714e2c | 4427 | return NULL; |
b5c19bd7 | 4428 | } |
760ac839 LW |
4429 | } |
4430 | return sv; | |
4431 | } | |
4432 | ||
09bef843 SB |
4433 | void |
4434 | Perl_newMYSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, OP *block) | |
4435 | { | |
46c461b5 AL |
4436 | PERL_UNUSED_ARG(floor); |
4437 | ||
09bef843 SB |
4438 | if (o) |
4439 | SAVEFREEOP(o); | |
4440 | if (proto) | |
4441 | SAVEFREEOP(proto); | |
4442 | if (attrs) | |
4443 | SAVEFREEOP(attrs); | |
4444 | if (block) | |
4445 | SAVEFREEOP(block); | |
4446 | Perl_croak(aTHX_ "\"my sub\" not yet implemented"); | |
4447 | } | |
4448 | ||
748a9306 | 4449 | CV * |
864dbfa3 | 4450 | Perl_newSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *block) |
79072805 | 4451 | { |
5f66b61c | 4452 | return Perl_newATTRSUB(aTHX_ floor, o, proto, NULL, block); |
09bef843 SB |
4453 | } |
4454 | ||
4455 | CV * | |
4456 | Perl_newATTRSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, OP *block) | |
4457 | { | |
27da23d5 | 4458 | dVAR; |
6867be6d | 4459 | const char *aname; |
83ee9e09 | 4460 | GV *gv; |
5c144d81 | 4461 | const char *ps; |
ea6e9374 | 4462 | STRLEN ps_len; |
c445ea15 | 4463 | register CV *cv = NULL; |
beab0874 | 4464 | SV *const_sv; |
b48b272a NC |
4465 | /* If the subroutine has no body, no attributes, and no builtin attributes |
4466 | then it's just a sub declaration, and we may be able to get away with | |
4467 | storing with a placeholder scalar in the symbol table, rather than a | |
4468 | full GV and CV. If anything is present then it will take a full CV to | |
4469 | store it. */ | |
4470 | const I32 gv_fetch_flags | |
4471 | = (block || attrs || (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS)) | |
4472 | ? GV_ADDMULTI : GV_ADDMULTI | GV_NOINIT; | |
bd61b366 | 4473 | const char * const name = o ? SvPVx_nolen_const(cSVOPo->op_sv) : NULL; |
8e742a20 MHM |
4474 | |
4475 | if (proto) { | |
4476 | assert(proto->op_type == OP_CONST); | |
5c144d81 | 4477 | ps = SvPVx_const(((SVOP*)proto)->op_sv, ps_len); |
8e742a20 MHM |
4478 | } |
4479 | else | |
bd61b366 | 4480 | ps = NULL; |
8e742a20 | 4481 | |
83ee9e09 | 4482 | if (!name && PERLDB_NAMEANON && CopLINE(PL_curcop)) { |
aec46f14 | 4483 | SV * const sv = sv_newmortal(); |
c99da370 JH |
4484 | Perl_sv_setpvf(aTHX_ sv, "%s[%s:%"IVdf"]", |
4485 | PL_curstash ? "__ANON__" : "__ANON__::__ANON__", | |
83ee9e09 | 4486 | CopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); |
b15aece3 | 4487 | aname = SvPVX_const(sv); |
83ee9e09 GS |
4488 | } |
4489 | else | |
bd61b366 | 4490 | aname = NULL; |
61dbb99a | 4491 | |
61dbb99a | 4492 | gv = name ? gv_fetchsv(cSVOPo->op_sv, gv_fetch_flags, SVt_PVCV) |
7a5fd60d NC |
4493 | : gv_fetchpv(aname ? aname |
4494 | : (PL_curstash ? "__ANON__" : "__ANON__::__ANON__"), | |
61dbb99a | 4495 | gv_fetch_flags, SVt_PVCV); |
83ee9e09 | 4496 | |
11343788 | 4497 | if (o) |
5dc0d613 | 4498 | SAVEFREEOP(o); |
3fe9a6f1 | 4499 | if (proto) |
4500 | SAVEFREEOP(proto); | |
09bef843 SB |
4501 | if (attrs) |
4502 | SAVEFREEOP(attrs); | |
3fe9a6f1 | 4503 | |
09bef843 | 4504 | if (SvTYPE(gv) != SVt_PVGV) { /* Maybe prototype now, and had at |
55d729e4 GS |
4505 | maximum a prototype before. */ |
4506 | if (SvTYPE(gv) > SVt_NULL) { | |
0453d815 | 4507 | if (!SvPOK((SV*)gv) && !(SvIOK((SV*)gv) && SvIVX((SV*)gv) == -1) |
e476b1b5 | 4508 | && ckWARN_d(WARN_PROTOTYPE)) |
f248d071 | 4509 | { |
9014280d | 4510 | Perl_warner(aTHX_ packWARN(WARN_PROTOTYPE), "Runaway prototype"); |
f248d071 | 4511 | } |
55d729e4 GS |
4512 | cv_ckproto((CV*)gv, NULL, ps); |
4513 | } | |
4514 | if (ps) | |
ea6e9374 | 4515 | sv_setpvn((SV*)gv, ps, ps_len); |
55d729e4 GS |
4516 | else |
4517 | sv_setiv((SV*)gv, -1); | |
3280af22 NIS |
4518 | SvREFCNT_dec(PL_compcv); |
4519 | cv = PL_compcv = NULL; | |
4520 | PL_sub_generation++; | |
beab0874 | 4521 | goto done; |
55d729e4 GS |
4522 | } |
4523 | ||
601f1833 | 4524 | cv = (!name || GvCVGEN(gv)) ? NULL : GvCV(gv); |
beab0874 | 4525 | |
7fb37951 AMS |
4526 | #ifdef GV_UNIQUE_CHECK |
4527 | if (cv && GvUNIQUE(gv) && SvREADONLY(cv)) { | |
4528 | Perl_croak(aTHX_ "Can't define subroutine %s (GV is unique)", name); | |
5bd07a3d DM |
4529 | } |
4530 | #endif | |
4531 | ||
2e8a6c53 | 4532 | if (!block || !ps || *ps || attrs || (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS)) |
a0714e2c | 4533 | const_sv = NULL; |
beab0874 | 4534 | else |
601f1833 | 4535 | const_sv = op_const_sv(block, NULL); |
beab0874 JT |
4536 | |
4537 | if (cv) { | |
6867be6d | 4538 | const bool exists = CvROOT(cv) || CvXSUB(cv); |
5bd07a3d | 4539 | |
7fb37951 AMS |
4540 | #ifdef GV_UNIQUE_CHECK |
4541 | if (exists && GvUNIQUE(gv)) { | |
4542 | Perl_croak(aTHX_ "Can't redefine unique subroutine %s", name); | |
5bd07a3d DM |
4543 | } |
4544 | #endif | |
4545 | ||
60ed1d8c GS |
4546 | /* if the subroutine doesn't exist and wasn't pre-declared |
4547 | * with a prototype, assume it will be AUTOLOADed, | |
4548 | * skipping the prototype check | |
4549 | */ | |
4550 | if (exists || SvPOK(cv)) | |
01ec43d0 | 4551 | cv_ckproto(cv, gv, ps); |
68dc0745 | 4552 | /* already defined (or promised)? */ |
60ed1d8c | 4553 | if (exists || GvASSUMECV(gv)) { |
09bef843 | 4554 | if (!block && !attrs) { |
d3cea301 SB |
4555 | if (CvFLAGS(PL_compcv)) { |
4556 | /* might have had built-in attrs applied */ | |
4557 | CvFLAGS(cv) |= (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS); | |
4558 | } | |
aa689395 | 4559 | /* just a "sub foo;" when &foo is already defined */ |
3280af22 | 4560 | SAVEFREESV(PL_compcv); |
aa689395 | 4561 | goto done; |
4562 | } | |
beab0874 JT |
4563 | if (block) { |
4564 | if (ckWARN(WARN_REDEFINE) | |
4565 | || (CvCONST(cv) | |
4566 | && (!const_sv || sv_cmp(cv_const_sv(cv), const_sv)))) | |
4567 | { | |
6867be6d | 4568 | const line_t oldline = CopLINE(PL_curcop); |
d8a34499 IK |
4569 | if (PL_copline != NOLINE) |
4570 | CopLINE_set(PL_curcop, PL_copline); | |
9014280d | 4571 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), |
beab0874 JT |
4572 | CvCONST(cv) ? "Constant subroutine %s redefined" |
4573 | : "Subroutine %s redefined", name); | |
4574 | CopLINE_set(PL_curcop, oldline); | |
4575 | } | |
4576 | SvREFCNT_dec(cv); | |
601f1833 | 4577 | cv = NULL; |
79072805 | 4578 | } |
79072805 LW |
4579 | } |
4580 | } | |
beab0874 | 4581 | if (const_sv) { |
7fc63493 | 4582 | (void)SvREFCNT_inc(const_sv); |
beab0874 | 4583 | if (cv) { |
0768512c | 4584 | assert(!CvROOT(cv) && !CvCONST(cv)); |
c69006e4 | 4585 | sv_setpvn((SV*)cv, "", 0); /* prototype is "" */ |
beab0874 JT |
4586 | CvXSUBANY(cv).any_ptr = const_sv; |
4587 | CvXSUB(cv) = const_sv_xsub; | |
4588 | CvCONST_on(cv); | |
d04ba589 | 4589 | CvISXSUB_on(cv); |
beab0874 JT |
4590 | } |
4591 | else { | |
601f1833 | 4592 | GvCV(gv) = NULL; |
beab0874 JT |
4593 | cv = newCONSTSUB(NULL, name, const_sv); |
4594 | } | |
4595 | op_free(block); | |
4596 | SvREFCNT_dec(PL_compcv); | |
4597 | PL_compcv = NULL; | |
4598 | PL_sub_generation++; | |
4599 | goto done; | |
4600 | } | |
09bef843 SB |
4601 | if (attrs) { |
4602 | HV *stash; | |
4603 | SV *rcv; | |
4604 | ||
4605 | /* Need to do a C<use attributes $stash_of_cv,\&cv,@attrs> | |
4606 | * before we clobber PL_compcv. | |
4607 | */ | |
4608 | if (cv && !block) { | |
4609 | rcv = (SV*)cv; | |
020f0e03 SB |
4610 | /* Might have had built-in attributes applied -- propagate them. */ |
4611 | CvFLAGS(cv) |= (CvFLAGS(PL_compcv) & CVf_BUILTIN_ATTRS); | |
a9164de8 | 4612 | if (CvGV(cv) && GvSTASH(CvGV(cv))) |
09bef843 | 4613 | stash = GvSTASH(CvGV(cv)); |
a9164de8 | 4614 | else if (CvSTASH(cv)) |
09bef843 SB |
4615 | stash = CvSTASH(cv); |
4616 | else | |
4617 | stash = PL_curstash; | |
4618 | } | |
4619 | else { | |
4620 | /* possibly about to re-define existing subr -- ignore old cv */ | |
4621 | rcv = (SV*)PL_compcv; | |
a9164de8 | 4622 | if (name && GvSTASH(gv)) |
09bef843 SB |
4623 | stash = GvSTASH(gv); |
4624 | else | |
4625 | stash = PL_curstash; | |
4626 | } | |
95f0a2f1 | 4627 | apply_attrs(stash, rcv, attrs, FALSE); |
09bef843 | 4628 | } |
a0d0e21e | 4629 | if (cv) { /* must reuse cv if autoloaded */ |
09bef843 SB |
4630 | if (!block) { |
4631 | /* got here with just attrs -- work done, so bug out */ | |
4632 | SAVEFREESV(PL_compcv); | |
4633 | goto done; | |
4634 | } | |
a3985cdc | 4635 | /* transfer PL_compcv to cv */ |
4633a7c4 | 4636 | cv_undef(cv); |
3280af22 | 4637 | CvFLAGS(cv) = CvFLAGS(PL_compcv); |
5c41a5fa DM |
4638 | if (!CvWEAKOUTSIDE(cv)) |
4639 | SvREFCNT_dec(CvOUTSIDE(cv)); | |
3280af22 | 4640 | CvOUTSIDE(cv) = CvOUTSIDE(PL_compcv); |
a3985cdc | 4641 | CvOUTSIDE_SEQ(cv) = CvOUTSIDE_SEQ(PL_compcv); |
3280af22 NIS |
4642 | CvOUTSIDE(PL_compcv) = 0; |
4643 | CvPADLIST(cv) = CvPADLIST(PL_compcv); | |
4644 | CvPADLIST(PL_compcv) = 0; | |
282f25c9 | 4645 | /* inner references to PL_compcv must be fixed up ... */ |
dd2155a4 | 4646 | pad_fixup_inner_anons(CvPADLIST(cv), PL_compcv, cv); |
282f25c9 | 4647 | /* ... before we throw it away */ |
3280af22 | 4648 | SvREFCNT_dec(PL_compcv); |
b5c19bd7 | 4649 | PL_compcv = cv; |
a933f601 IZ |
4650 | if (PERLDB_INTER)/* Advice debugger on the new sub. */ |
4651 | ++PL_sub_generation; | |
a0d0e21e LW |
4652 | } |
4653 | else { | |
3280af22 | 4654 | cv = PL_compcv; |
44a8e56a | 4655 | if (name) { |
4656 | GvCV(gv) = cv; | |
4657 | GvCVGEN(gv) = 0; | |
3280af22 | 4658 | PL_sub_generation++; |
44a8e56a | 4659 | } |
a0d0e21e | 4660 | } |
65c50114 | 4661 | CvGV(cv) = gv; |
a636914a | 4662 | CvFILE_set_from_cop(cv, PL_curcop); |
3280af22 | 4663 | CvSTASH(cv) = PL_curstash; |
8990e307 | 4664 | |
3fe9a6f1 | 4665 | if (ps) |
ea6e9374 | 4666 | sv_setpvn((SV*)cv, ps, ps_len); |
4633a7c4 | 4667 | |
3280af22 | 4668 | if (PL_error_count) { |
c07a80fd | 4669 | op_free(block); |
5f66b61c | 4670 | block = NULL; |
68dc0745 | 4671 | if (name) { |
6867be6d | 4672 | const char *s = strrchr(name, ':'); |
68dc0745 | 4673 | s = s ? s+1 : name; |
6d4c2119 | 4674 | if (strEQ(s, "BEGIN")) { |
e1ec3a88 | 4675 | const char not_safe[] = |
6d4c2119 | 4676 | "BEGIN not safe after errors--compilation aborted"; |
faef0170 | 4677 | if (PL_in_eval & EVAL_KEEPERR) |
cea2e8a9 | 4678 | Perl_croak(aTHX_ not_safe); |
6d4c2119 CS |
4679 | else { |
4680 | /* force display of errors found but not reported */ | |
38a03e6e | 4681 | sv_catpv(ERRSV, not_safe); |
35c1215d | 4682 | Perl_croak(aTHX_ "%"SVf, ERRSV); |
6d4c2119 CS |
4683 | } |
4684 | } | |
68dc0745 | 4685 | } |
c07a80fd | 4686 | } |
beab0874 JT |
4687 | if (!block) |
4688 | goto done; | |
a0d0e21e | 4689 | |
7766f137 | 4690 | if (CvLVALUE(cv)) { |
78f9721b SM |
4691 | CvROOT(cv) = newUNOP(OP_LEAVESUBLV, 0, |
4692 | mod(scalarseq(block), OP_LEAVESUBLV)); | |
7766f137 GS |
4693 | } |
4694 | else { | |
09c2fd24 AE |
4695 | /* This makes sub {}; work as expected. */ |
4696 | if (block->op_type == OP_STUB) { | |
4697 | op_free(block); | |
bd61b366 | 4698 | block = newSTATEOP(0, NULL, 0); |
09c2fd24 | 4699 | } |
7766f137 GS |
4700 | CvROOT(cv) = newUNOP(OP_LEAVESUB, 0, scalarseq(block)); |
4701 | } | |
4702 | CvROOT(cv)->op_private |= OPpREFCOUNTED; | |
4703 | OpREFCNT_set(CvROOT(cv), 1); | |
4704 | CvSTART(cv) = LINKLIST(CvROOT(cv)); | |
4705 | CvROOT(cv)->op_next = 0; | |
a2efc822 | 4706 | CALL_PEEP(CvSTART(cv)); |
7766f137 GS |
4707 | |
4708 | /* now that optimizer has done its work, adjust pad values */ | |
54310121 | 4709 | |
dd2155a4 DM |
4710 | pad_tidy(CvCLONE(cv) ? padtidy_SUBCLONE : padtidy_SUB); |
4711 | ||
4712 | if (CvCLONE(cv)) { | |
beab0874 JT |
4713 | assert(!CvCONST(cv)); |
4714 | if (ps && !*ps && op_const_sv(block, cv)) | |
4715 | CvCONST_on(cv); | |
a0d0e21e | 4716 | } |
79072805 | 4717 | |
83ee9e09 | 4718 | if (name || aname) { |
6867be6d | 4719 | const char *s; |
0bd48802 | 4720 | const char * const tname = (name ? name : aname); |
44a8e56a | 4721 | |
3280af22 | 4722 | if (PERLDB_SUBLINE && PL_curstash != PL_debstash) { |
561b68a9 | 4723 | SV * const sv = newSV(0); |
c4420975 | 4724 | SV * const tmpstr = sv_newmortal(); |
5c1737d1 NC |
4725 | GV * const db_postponed = gv_fetchpvs("DB::postponed", |
4726 | GV_ADDMULTI, SVt_PVHV); | |
44a8e56a | 4727 | HV *hv; |
4728 | ||
ed094faf GS |
4729 | Perl_sv_setpvf(aTHX_ sv, "%s:%ld-%ld", |
4730 | CopFILE(PL_curcop), | |
cc49e20b | 4731 | (long)PL_subline, (long)CopLINE(PL_curcop)); |
bd61b366 | 4732 | gv_efullname3(tmpstr, gv, NULL); |
b15aece3 | 4733 | hv_store(GvHV(PL_DBsub), SvPVX_const(tmpstr), SvCUR(tmpstr), sv, 0); |
44a8e56a | 4734 | hv = GvHVn(db_postponed); |
551405c4 AL |
4735 | if (HvFILL(hv) > 0 && hv_exists(hv, SvPVX_const(tmpstr), SvCUR(tmpstr))) { |
4736 | CV * const pcv = GvCV(db_postponed); | |
4737 | if (pcv) { | |
4738 | dSP; | |
4739 | PUSHMARK(SP); | |
4740 | XPUSHs(tmpstr); | |
4741 | PUTBACK; | |
4742 | call_sv((SV*)pcv, G_DISCARD); | |
4743 | } | |
44a8e56a | 4744 | } |
4745 | } | |
79072805 | 4746 | |
83ee9e09 | 4747 | if ((s = strrchr(tname,':'))) |
28757baa | 4748 | s++; |
4749 | else | |
83ee9e09 | 4750 | s = tname; |
ed094faf | 4751 | |
7d30b5c4 | 4752 | if (*s != 'B' && *s != 'E' && *s != 'C' && *s != 'I') |
ed094faf GS |
4753 | goto done; |
4754 | ||
7678c486 | 4755 | if (strEQ(s, "BEGIN") && !PL_error_count) { |
6867be6d | 4756 | const I32 oldscope = PL_scopestack_ix; |
28757baa | 4757 | ENTER; |
57843af0 GS |
4758 | SAVECOPFILE(&PL_compiling); |
4759 | SAVECOPLINE(&PL_compiling); | |
28757baa | 4760 | |
3280af22 NIS |
4761 | if (!PL_beginav) |
4762 | PL_beginav = newAV(); | |
28757baa | 4763 | DEBUG_x( dump_sub(gv) ); |
ea2f84a3 GS |
4764 | av_push(PL_beginav, (SV*)cv); |
4765 | GvCV(gv) = 0; /* cv has been hijacked */ | |
3280af22 | 4766 | call_list(oldscope, PL_beginav); |
a6006777 | 4767 | |
3280af22 | 4768 | PL_curcop = &PL_compiling; |
eb160463 | 4769 | PL_compiling.op_private = (U8)(PL_hints & HINT_PRIVATE_MASK); |
28757baa | 4770 | LEAVE; |
4771 | } | |
3280af22 NIS |
4772 | else if (strEQ(s, "END") && !PL_error_count) { |
4773 | if (!PL_endav) | |
4774 | PL_endav = newAV(); | |
ed094faf | 4775 | DEBUG_x( dump_sub(gv) ); |
3280af22 | 4776 | av_unshift(PL_endav, 1); |
ea2f84a3 GS |
4777 | av_store(PL_endav, 0, (SV*)cv); |
4778 | GvCV(gv) = 0; /* cv has been hijacked */ | |
28757baa | 4779 | } |
7d30b5c4 GS |
4780 | else if (strEQ(s, "CHECK") && !PL_error_count) { |
4781 | if (!PL_checkav) | |
4782 | PL_checkav = newAV(); | |
ed094faf | 4783 | DEBUG_x( dump_sub(gv) ); |
ddda08b7 | 4784 | if (PL_main_start && ckWARN(WARN_VOID)) |
9014280d | 4785 | Perl_warner(aTHX_ packWARN(WARN_VOID), "Too late to run CHECK block"); |
7d30b5c4 | 4786 | av_unshift(PL_checkav, 1); |
ea2f84a3 GS |
4787 | av_store(PL_checkav, 0, (SV*)cv); |
4788 | GvCV(gv) = 0; /* cv has been hijacked */ | |
4f25aa18 | 4789 | } |
3280af22 NIS |
4790 | else if (strEQ(s, "INIT") && !PL_error_count) { |
4791 | if (!PL_initav) | |
4792 | PL_initav = newAV(); | |
ed094faf | 4793 | DEBUG_x( dump_sub(gv) ); |
ddda08b7 | 4794 | if (PL_main_start && ckWARN(WARN_VOID)) |
9014280d | 4795 | Perl_warner(aTHX_ packWARN(WARN_VOID), "Too late to run INIT block"); |
ea2f84a3 GS |
4796 | av_push(PL_initav, (SV*)cv); |
4797 | GvCV(gv) = 0; /* cv has been hijacked */ | |
ae77835f | 4798 | } |
79072805 | 4799 | } |
a6006777 | 4800 | |
aa689395 | 4801 | done: |
3280af22 | 4802 | PL_copline = NOLINE; |
8990e307 | 4803 | LEAVE_SCOPE(floor); |
a0d0e21e | 4804 | return cv; |
79072805 LW |
4805 | } |
4806 | ||
b099ddc0 | 4807 | /* XXX unsafe for threads if eval_owner isn't held */ |
954c1994 GS |
4808 | /* |
4809 | =for apidoc newCONSTSUB | |
4810 | ||
4811 | Creates a constant sub equivalent to Perl C<sub FOO () { 123 }> which is | |
4812 | eligible for inlining at compile-time. | |
4813 | ||
4814 | =cut | |
4815 | */ | |
4816 | ||
beab0874 | 4817 | CV * |
e1ec3a88 | 4818 | Perl_newCONSTSUB(pTHX_ HV *stash, const char *name, SV *sv) |
5476c433 | 4819 | { |
27da23d5 | 4820 | dVAR; |
beab0874 | 4821 | CV* cv; |
5476c433 | 4822 | |
11faa288 | 4823 | ENTER; |
11faa288 | 4824 | |
f4dd75d9 | 4825 | SAVECOPLINE(PL_curcop); |
11faa288 | 4826 | CopLINE_set(PL_curcop, PL_copline); |
f4dd75d9 GS |
4827 | |
4828 | SAVEHINTS(); | |
3280af22 | 4829 | PL_hints &= ~HINT_BLOCK_SCOPE; |
11faa288 GS |
4830 | |
4831 | if (stash) { | |
4832 | SAVESPTR(PL_curstash); | |
4833 | SAVECOPSTASH(PL_curcop); | |
4834 | PL_curstash = stash; | |
05ec9bb3 | 4835 | CopSTASH_set(PL_curcop,stash); |
11faa288 | 4836 | } |
5476c433 | 4837 | |
91a15d0d | 4838 | cv = newXS(name, const_sv_xsub, savepv(CopFILE(PL_curcop))); |
beab0874 JT |
4839 | CvXSUBANY(cv).any_ptr = sv; |
4840 | CvCONST_on(cv); | |
c69006e4 | 4841 | sv_setpvn((SV*)cv, "", 0); /* prototype is "" */ |
5476c433 | 4842 | |
65e66c80 | 4843 | #ifdef USE_ITHREADS |
02f28d44 MHM |
4844 | if (stash) |
4845 | CopSTASH_free(PL_curcop); | |
65e66c80 | 4846 | #endif |
11faa288 | 4847 | LEAVE; |
beab0874 JT |
4848 | |
4849 | return cv; | |
5476c433 JD |
4850 | } |
4851 | ||
954c1994 GS |
4852 | /* |
4853 | =for apidoc U||newXS | |
4854 | ||
4855 | Used by C<xsubpp> to hook up XSUBs as Perl subs. | |
4856 | ||
4857 | =cut | |
4858 | */ | |
4859 | ||
57d3b86d | 4860 | CV * |
bfed75c6 | 4861 | Perl_newXS(pTHX_ const char *name, XSUBADDR_t subaddr, const char *filename) |
a0d0e21e | 4862 | { |
97aff369 | 4863 | dVAR; |
9a957fbc | 4864 | GV * const gv = gv_fetchpv(name ? name : |
c99da370 JH |
4865 | (PL_curstash ? "__ANON__" : "__ANON__::__ANON__"), |
4866 | GV_ADDMULTI, SVt_PVCV); | |
79072805 | 4867 | register CV *cv; |
44a8e56a | 4868 | |
1ecdd9a8 HS |
4869 | if (!subaddr) |
4870 | Perl_croak(aTHX_ "panic: no address for '%s' in '%s'", name, filename); | |
4871 | ||
601f1833 | 4872 | if ((cv = (name ? GvCV(gv) : NULL))) { |
44a8e56a | 4873 | if (GvCVGEN(gv)) { |
4874 | /* just a cached method */ | |
4875 | SvREFCNT_dec(cv); | |
601f1833 | 4876 | cv = NULL; |
44a8e56a | 4877 | } |
4878 | else if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
4879 | /* already defined (or promised) */ | |
1df70142 | 4880 | /* XXX It's possible for this HvNAME_get to return null, and get passed into strEQ */ |
66a1b24b AL |
4881 | if (ckWARN(WARN_REDEFINE)) { |
4882 | GV * const gvcv = CvGV(cv); | |
4883 | if (gvcv) { | |
4884 | HV * const stash = GvSTASH(gvcv); | |
4885 | if (stash) { | |
8b38226b AL |
4886 | const char *redefined_name = HvNAME_get(stash); |
4887 | if ( strEQ(redefined_name,"autouse") ) { | |
66a1b24b AL |
4888 | const line_t oldline = CopLINE(PL_curcop); |
4889 | if (PL_copline != NOLINE) | |
4890 | CopLINE_set(PL_curcop, PL_copline); | |
4891 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), | |
4892 | CvCONST(cv) ? "Constant subroutine %s redefined" | |
4893 | : "Subroutine %s redefined" | |
4894 | ,name); | |
4895 | CopLINE_set(PL_curcop, oldline); | |
4896 | } | |
4897 | } | |
4898 | } | |
a0d0e21e LW |
4899 | } |
4900 | SvREFCNT_dec(cv); | |
601f1833 | 4901 | cv = NULL; |
79072805 | 4902 | } |
79072805 | 4903 | } |
44a8e56a | 4904 | |
4905 | if (cv) /* must reuse cv if autoloaded */ | |
4906 | cv_undef(cv); | |
a0d0e21e | 4907 | else { |
561b68a9 | 4908 | cv = (CV*)newSV(0); |
a0d0e21e | 4909 | sv_upgrade((SV *)cv, SVt_PVCV); |
44a8e56a | 4910 | if (name) { |
4911 | GvCV(gv) = cv; | |
4912 | GvCVGEN(gv) = 0; | |
3280af22 | 4913 | PL_sub_generation++; |
44a8e56a | 4914 | } |
a0d0e21e | 4915 | } |
65c50114 | 4916 | CvGV(cv) = gv; |
b195d487 | 4917 | (void)gv_fetchfile(filename); |
dd374669 | 4918 | CvFILE(cv) = (char *)filename; /* NOTE: not copied, as it is expected to be |
57843af0 | 4919 | an external constant string */ |
d04ba589 | 4920 | CvISXSUB_on(cv); |
a0d0e21e | 4921 | CvXSUB(cv) = subaddr; |
44a8e56a | 4922 | |
28757baa | 4923 | if (name) { |
e1ec3a88 | 4924 | const char *s = strrchr(name,':'); |
28757baa | 4925 | if (s) |
4926 | s++; | |
4927 | else | |
4928 | s = name; | |
ed094faf | 4929 | |
7d30b5c4 | 4930 | if (*s != 'B' && *s != 'E' && *s != 'C' && *s != 'I') |
ed094faf GS |
4931 | goto done; |
4932 | ||
28757baa | 4933 | if (strEQ(s, "BEGIN")) { |
3280af22 NIS |
4934 | if (!PL_beginav) |
4935 | PL_beginav = newAV(); | |
ea2f84a3 GS |
4936 | av_push(PL_beginav, (SV*)cv); |
4937 | GvCV(gv) = 0; /* cv has been hijacked */ | |
28757baa | 4938 | } |
4939 | else if (strEQ(s, "END")) { | |
3280af22 NIS |
4940 | if (!PL_endav) |
4941 | PL_endav = newAV(); | |
4942 | av_unshift(PL_endav, 1); | |
ea2f84a3 GS |
4943 | av_store(PL_endav, 0, (SV*)cv); |
4944 | GvCV(gv) = 0; /* cv has been hijacked */ | |
28757baa | 4945 | } |
7d30b5c4 GS |
4946 | else if (strEQ(s, "CHECK")) { |
4947 | if (!PL_checkav) | |
4948 | PL_checkav = newAV(); | |
ddda08b7 | 4949 | if (PL_main_start && ckWARN(WARN_VOID)) |
9014280d | 4950 | Perl_warner(aTHX_ packWARN(WARN_VOID), "Too late to run CHECK block"); |
7d30b5c4 | 4951 | av_unshift(PL_checkav, 1); |
ea2f84a3 GS |
4952 | av_store(PL_checkav, 0, (SV*)cv); |
4953 | GvCV(gv) = 0; /* cv has been hijacked */ | |
4f25aa18 | 4954 | } |
7d07dbc2 | 4955 | else if (strEQ(s, "INIT")) { |
3280af22 NIS |
4956 | if (!PL_initav) |
4957 | PL_initav = newAV(); | |
ddda08b7 | 4958 | if (PL_main_start && ckWARN(WARN_VOID)) |
9014280d | 4959 | Perl_warner(aTHX_ packWARN(WARN_VOID), "Too late to run INIT block"); |
ea2f84a3 GS |
4960 | av_push(PL_initav, (SV*)cv); |
4961 | GvCV(gv) = 0; /* cv has been hijacked */ | |
ae77835f | 4962 | } |
28757baa | 4963 | } |
8990e307 | 4964 | else |
a5f75d66 | 4965 | CvANON_on(cv); |
44a8e56a | 4966 | |
ed094faf | 4967 | done: |
a0d0e21e | 4968 | return cv; |
79072805 LW |
4969 | } |
4970 | ||
4971 | void | |
864dbfa3 | 4972 | Perl_newFORM(pTHX_ I32 floor, OP *o, OP *block) |
79072805 | 4973 | { |
97aff369 | 4974 | dVAR; |
79072805 | 4975 | register CV *cv; |
79072805 | 4976 | |
0bd48802 | 4977 | GV * const gv = o |
f776e3cd | 4978 | ? gv_fetchsv(cSVOPo->op_sv, GV_ADD, SVt_PVFM) |
fafc274c | 4979 | : gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVFM); |
0bd48802 | 4980 | |
7fb37951 AMS |
4981 | #ifdef GV_UNIQUE_CHECK |
4982 | if (GvUNIQUE(gv)) { | |
4983 | Perl_croak(aTHX_ "Bad symbol for form (GV is unique)"); | |
5bd07a3d DM |
4984 | } |
4985 | #endif | |
a5f75d66 | 4986 | GvMULTI_on(gv); |
155aba94 | 4987 | if ((cv = GvFORM(gv))) { |
599cee73 | 4988 | if (ckWARN(WARN_REDEFINE)) { |
6867be6d | 4989 | const line_t oldline = CopLINE(PL_curcop); |
d8a34499 IK |
4990 | if (PL_copline != NOLINE) |
4991 | CopLINE_set(PL_curcop, PL_copline); | |
7a5fd60d NC |
4992 | Perl_warner(aTHX_ packWARN(WARN_REDEFINE), |
4993 | o ? "Format %"SVf" redefined" | |
4994 | : "Format STDOUT redefined" ,cSVOPo->op_sv); | |
57843af0 | 4995 | CopLINE_set(PL_curcop, oldline); |
79072805 | 4996 | } |
8990e307 | 4997 | SvREFCNT_dec(cv); |
79072805 | 4998 | } |
3280af22 | 4999 | cv = PL_compcv; |
79072805 | 5000 | GvFORM(gv) = cv; |
65c50114 | 5001 | CvGV(cv) = gv; |
a636914a | 5002 | CvFILE_set_from_cop(cv, PL_curcop); |
79072805 | 5003 | |
a0d0e21e | 5004 | |
dd2155a4 | 5005 | pad_tidy(padtidy_FORMAT); |
79072805 | 5006 | CvROOT(cv) = newUNOP(OP_LEAVEWRITE, 0, scalarseq(block)); |
7934575e GS |
5007 | CvROOT(cv)->op_private |= OPpREFCOUNTED; |
5008 | OpREFCNT_set(CvROOT(cv), 1); | |
79072805 LW |
5009 | CvSTART(cv) = LINKLIST(CvROOT(cv)); |
5010 | CvROOT(cv)->op_next = 0; | |
a2efc822 | 5011 | CALL_PEEP(CvSTART(cv)); |
11343788 | 5012 | op_free(o); |
3280af22 | 5013 | PL_copline = NOLINE; |
8990e307 | 5014 | LEAVE_SCOPE(floor); |
79072805 LW |
5015 | } |
5016 | ||
5017 | OP * | |
864dbfa3 | 5018 | Perl_newANONLIST(pTHX_ OP *o) |
79072805 | 5019 | { |
93a17b20 | 5020 | return newUNOP(OP_REFGEN, 0, |
11343788 | 5021 | mod(list(convert(OP_ANONLIST, 0, o)), OP_REFGEN)); |
79072805 LW |
5022 | } |
5023 | ||
5024 | OP * | |
864dbfa3 | 5025 | Perl_newANONHASH(pTHX_ OP *o) |
79072805 | 5026 | { |
93a17b20 | 5027 | return newUNOP(OP_REFGEN, 0, |
11343788 | 5028 | mod(list(convert(OP_ANONHASH, 0, o)), OP_REFGEN)); |
a0d0e21e LW |
5029 | } |
5030 | ||
5031 | OP * | |
864dbfa3 | 5032 | Perl_newANONSUB(pTHX_ I32 floor, OP *proto, OP *block) |
a0d0e21e | 5033 | { |
5f66b61c | 5034 | return newANONATTRSUB(floor, proto, NULL, block); |
09bef843 SB |
5035 | } |
5036 | ||
5037 | OP * | |
5038 | Perl_newANONATTRSUB(pTHX_ I32 floor, OP *proto, OP *attrs, OP *block) | |
5039 | { | |
a0d0e21e | 5040 | return newUNOP(OP_REFGEN, 0, |
09bef843 SB |
5041 | newSVOP(OP_ANONCODE, 0, |
5042 | (SV*)newATTRSUB(floor, 0, proto, attrs, block))); | |
79072805 LW |
5043 | } |
5044 | ||
5045 | OP * | |
864dbfa3 | 5046 | Perl_oopsAV(pTHX_ OP *o) |
79072805 | 5047 | { |
27da23d5 | 5048 | dVAR; |
ed6116ce LW |
5049 | switch (o->op_type) { |
5050 | case OP_PADSV: | |
5051 | o->op_type = OP_PADAV; | |
22c35a8c | 5052 | o->op_ppaddr = PL_ppaddr[OP_PADAV]; |
51e247a3 | 5053 | return ref(o, OP_RV2AV); |
b2ffa427 | 5054 | |
ed6116ce | 5055 | case OP_RV2SV: |
79072805 | 5056 | o->op_type = OP_RV2AV; |
22c35a8c | 5057 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
79072805 | 5058 | ref(o, OP_RV2AV); |
ed6116ce LW |
5059 | break; |
5060 | ||
5061 | default: | |
0453d815 | 5062 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 5063 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "oops: oopsAV"); |
ed6116ce LW |
5064 | break; |
5065 | } | |
79072805 LW |
5066 | return o; |
5067 | } | |
5068 | ||
5069 | OP * | |
864dbfa3 | 5070 | Perl_oopsHV(pTHX_ OP *o) |
79072805 | 5071 | { |
27da23d5 | 5072 | dVAR; |
ed6116ce LW |
5073 | switch (o->op_type) { |
5074 | case OP_PADSV: | |
5075 | case OP_PADAV: | |
5076 | o->op_type = OP_PADHV; | |
22c35a8c | 5077 | o->op_ppaddr = PL_ppaddr[OP_PADHV]; |
51e247a3 | 5078 | return ref(o, OP_RV2HV); |
ed6116ce LW |
5079 | |
5080 | case OP_RV2SV: | |
5081 | case OP_RV2AV: | |
79072805 | 5082 | o->op_type = OP_RV2HV; |
22c35a8c | 5083 | o->op_ppaddr = PL_ppaddr[OP_RV2HV]; |
79072805 | 5084 | ref(o, OP_RV2HV); |
ed6116ce LW |
5085 | break; |
5086 | ||
5087 | default: | |
0453d815 | 5088 | if (ckWARN_d(WARN_INTERNAL)) |
9014280d | 5089 | Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "oops: oopsHV"); |
ed6116ce LW |
5090 | break; |
5091 | } | |
79072805 LW |
5092 | return o; |
5093 | } | |
5094 | ||
5095 | OP * | |
864dbfa3 | 5096 | Perl_newAVREF(pTHX_ OP *o) |
79072805 | 5097 | { |
27da23d5 | 5098 | dVAR; |
ed6116ce LW |
5099 | if (o->op_type == OP_PADANY) { |
5100 | o->op_type = OP_PADAV; | |
22c35a8c | 5101 | o->op_ppaddr = PL_ppaddr[OP_PADAV]; |
93a17b20 | 5102 | return o; |
ed6116ce | 5103 | } |
a1063b2d | 5104 | else if ((o->op_type == OP_RV2AV || o->op_type == OP_PADAV) |
9014280d PM |
5105 | && ckWARN(WARN_DEPRECATED)) { |
5106 | Perl_warner(aTHX_ packWARN(WARN_DEPRECATED), | |
a1063b2d RH |
5107 | "Using an array as a reference is deprecated"); |
5108 | } | |
79072805 LW |
5109 | return newUNOP(OP_RV2AV, 0, scalar(o)); |
5110 | } | |
5111 | ||
5112 | OP * | |
864dbfa3 | 5113 | Perl_newGVREF(pTHX_ I32 type, OP *o) |
79072805 | 5114 | { |
82092f1d | 5115 | if (type == OP_MAPSTART || type == OP_GREPSTART || type == OP_SORT) |
a0d0e21e | 5116 | return newUNOP(OP_NULL, 0, o); |
748a9306 | 5117 | return ref(newUNOP(OP_RV2GV, OPf_REF, o), type); |
79072805 LW |
5118 | } |
5119 | ||
5120 | OP * | |
864dbfa3 | 5121 | Perl_newHVREF(pTHX_ OP *o) |
79072805 | 5122 | { |
27da23d5 | 5123 | dVAR; |
ed6116ce LW |
5124 | if (o->op_type == OP_PADANY) { |
5125 | o->op_type = OP_PADHV; | |
22c35a8c | 5126 | o->op_ppaddr = PL_ppaddr[OP_PADHV]; |
93a17b20 | 5127 | return o; |
ed6116ce | 5128 | } |
a1063b2d | 5129 | else if ((o->op_type == OP_RV2HV || o->op_type == OP_PADHV) |
9014280d PM |
5130 | && ckWARN(WARN_DEPRECATED)) { |
5131 | Perl_warner(aTHX_ packWARN(WARN_DEPRECATED), | |
a1063b2d RH |
5132 | "Using a hash as a reference is deprecated"); |
5133 | } | |
79072805 LW |
5134 | return newUNOP(OP_RV2HV, 0, scalar(o)); |
5135 | } | |
5136 | ||
5137 | OP * | |
864dbfa3 | 5138 | Perl_newCVREF(pTHX_ I32 flags, OP *o) |
79072805 | 5139 | { |
c07a80fd | 5140 | return newUNOP(OP_RV2CV, flags, scalar(o)); |
79072805 LW |
5141 | } |
5142 | ||
5143 | OP * | |
864dbfa3 | 5144 | Perl_newSVREF(pTHX_ OP *o) |
79072805 | 5145 | { |
27da23d5 | 5146 | dVAR; |
ed6116ce LW |
5147 | if (o->op_type == OP_PADANY) { |
5148 | o->op_type = OP_PADSV; | |
22c35a8c | 5149 | o->op_ppaddr = PL_ppaddr[OP_PADSV]; |
93a17b20 | 5150 | return o; |
ed6116ce | 5151 | } |
224a4551 MB |
5152 | else if (o->op_type == OP_THREADSV && !(o->op_flags & OPpDONE_SVREF)) { |
5153 | o->op_flags |= OPpDONE_SVREF; | |
a863c7d1 | 5154 | return o; |
224a4551 | 5155 | } |
79072805 LW |
5156 | return newUNOP(OP_RV2SV, 0, scalar(o)); |
5157 | } | |
5158 | ||
61b743bb DM |
5159 | /* Check routines. See the comments at the top of this file for details |
5160 | * on when these are called */ | |
79072805 LW |
5161 | |
5162 | OP * | |
cea2e8a9 | 5163 | Perl_ck_anoncode(pTHX_ OP *o) |
5f05dabc | 5164 | { |
dd2155a4 | 5165 | cSVOPo->op_targ = pad_add_anon(cSVOPo->op_sv, o->op_type); |
a0714e2c | 5166 | cSVOPo->op_sv = NULL; |
5dc0d613 | 5167 | return o; |
5f05dabc | 5168 | } |
5169 | ||
5170 | OP * | |
cea2e8a9 | 5171 | Perl_ck_bitop(pTHX_ OP *o) |
55497cff | 5172 | { |
97aff369 | 5173 | dVAR; |
276b2a0c RGS |
5174 | #define OP_IS_NUMCOMPARE(op) \ |
5175 | ((op) == OP_LT || (op) == OP_I_LT || \ | |
5176 | (op) == OP_GT || (op) == OP_I_GT || \ | |
5177 | (op) == OP_LE || (op) == OP_I_LE || \ | |
5178 | (op) == OP_GE || (op) == OP_I_GE || \ | |
5179 | (op) == OP_EQ || (op) == OP_I_EQ || \ | |
5180 | (op) == OP_NE || (op) == OP_I_NE || \ | |
5181 | (op) == OP_NCMP || (op) == OP_I_NCMP) | |
eb160463 | 5182 | o->op_private = (U8)(PL_hints & HINT_PRIVATE_MASK); |
2b84528b RGS |
5183 | if (!(o->op_flags & OPf_STACKED) /* Not an assignment */ |
5184 | && (o->op_type == OP_BIT_OR | |
5185 | || o->op_type == OP_BIT_AND | |
5186 | || o->op_type == OP_BIT_XOR)) | |
276b2a0c | 5187 | { |
1df70142 AL |
5188 | const OP * const left = cBINOPo->op_first; |
5189 | const OP * const right = left->op_sibling; | |
96a925ab YST |
5190 | if ((OP_IS_NUMCOMPARE(left->op_type) && |
5191 | (left->op_flags & OPf_PARENS) == 0) || | |
5192 | (OP_IS_NUMCOMPARE(right->op_type) && | |
5193 | (right->op_flags & OPf_PARENS) == 0)) | |
276b2a0c RGS |
5194 | if (ckWARN(WARN_PRECEDENCE)) |
5195 | Perl_warner(aTHX_ packWARN(WARN_PRECEDENCE), | |
5196 | "Possible precedence problem on bitwise %c operator", | |
5197 | o->op_type == OP_BIT_OR ? '|' | |
5198 | : o->op_type == OP_BIT_AND ? '&' : '^' | |
5199 | ); | |
5200 | } | |
5dc0d613 | 5201 | return o; |
55497cff | 5202 | } |
5203 | ||
5204 | OP * | |
cea2e8a9 | 5205 | Perl_ck_concat(pTHX_ OP *o) |
79072805 | 5206 | { |
0bd48802 | 5207 | const OP * const kid = cUNOPo->op_first; |
df91b2c5 AE |
5208 | if (kid->op_type == OP_CONCAT && !(kid->op_private & OPpTARGET_MY) && |
5209 | !(kUNOP->op_first->op_flags & OPf_MOD)) | |
0165acc7 | 5210 | o->op_flags |= OPf_STACKED; |
11343788 | 5211 | return o; |
79072805 LW |
5212 | } |
5213 | ||
5214 | OP * | |
cea2e8a9 | 5215 | Perl_ck_spair(pTHX_ OP *o) |
79072805 | 5216 | { |
27da23d5 | 5217 | dVAR; |
11343788 | 5218 | if (o->op_flags & OPf_KIDS) { |
79072805 | 5219 | OP* newop; |
a0d0e21e | 5220 | OP* kid; |
6867be6d | 5221 | const OPCODE type = o->op_type; |
5dc0d613 | 5222 | o = modkids(ck_fun(o), type); |
11343788 | 5223 | kid = cUNOPo->op_first; |
a0d0e21e LW |
5224 | newop = kUNOP->op_first->op_sibling; |
5225 | if (newop && | |
5226 | (newop->op_sibling || | |
22c35a8c | 5227 | !(PL_opargs[newop->op_type] & OA_RETSCALAR) || |
a0d0e21e LW |
5228 | newop->op_type == OP_PADAV || newop->op_type == OP_PADHV || |
5229 | newop->op_type == OP_RV2AV || newop->op_type == OP_RV2HV)) { | |
b2ffa427 | 5230 | |
11343788 | 5231 | return o; |
a0d0e21e LW |
5232 | } |
5233 | op_free(kUNOP->op_first); | |
5234 | kUNOP->op_first = newop; | |
5235 | } | |
22c35a8c | 5236 | o->op_ppaddr = PL_ppaddr[++o->op_type]; |
11343788 | 5237 | return ck_fun(o); |
a0d0e21e LW |
5238 | } |
5239 | ||
5240 | OP * | |
cea2e8a9 | 5241 | Perl_ck_delete(pTHX_ OP *o) |
a0d0e21e | 5242 | { |
11343788 | 5243 | o = ck_fun(o); |
5dc0d613 | 5244 | o->op_private = 0; |
11343788 | 5245 | if (o->op_flags & OPf_KIDS) { |
551405c4 | 5246 | OP * const kid = cUNOPo->op_first; |
01020589 GS |
5247 | switch (kid->op_type) { |
5248 | case OP_ASLICE: | |
5249 | o->op_flags |= OPf_SPECIAL; | |
5250 | /* FALL THROUGH */ | |
5251 | case OP_HSLICE: | |
5dc0d613 | 5252 | o->op_private |= OPpSLICE; |
01020589 GS |
5253 | break; |
5254 | case OP_AELEM: | |
5255 | o->op_flags |= OPf_SPECIAL; | |
5256 | /* FALL THROUGH */ | |
5257 | case OP_HELEM: | |
5258 | break; | |
5259 | default: | |
5260 | Perl_croak(aTHX_ "%s argument is not a HASH or ARRAY element or slice", | |
53e06cf0 | 5261 | OP_DESC(o)); |
01020589 | 5262 | } |
93c66552 | 5263 | op_null(kid); |
79072805 | 5264 | } |
11343788 | 5265 | return o; |
79072805 LW |
5266 | } |
5267 | ||
5268 | OP * | |
96e176bf CL |
5269 | Perl_ck_die(pTHX_ OP *o) |
5270 | { | |
5271 | #ifdef VMS | |
5272 | if (VMSISH_HUSHED) o->op_private |= OPpHUSH_VMSISH; | |
5273 | #endif | |
5274 | return ck_fun(o); | |
5275 | } | |
5276 | ||
5277 | OP * | |
cea2e8a9 | 5278 | Perl_ck_eof(pTHX_ OP *o) |
79072805 | 5279 | { |
97aff369 | 5280 | dVAR; |
6867be6d | 5281 | const I32 type = o->op_type; |
79072805 | 5282 | |
11343788 MB |
5283 | if (o->op_flags & OPf_KIDS) { |
5284 | if (cLISTOPo->op_first->op_type == OP_STUB) { | |
5285 | op_free(o); | |
8fde6460 | 5286 | o = newUNOP(type, OPf_SPECIAL, newGVOP(OP_GV, 0, PL_argvgv)); |
8990e307 | 5287 | } |
11343788 | 5288 | return ck_fun(o); |
79072805 | 5289 | } |
11343788 | 5290 | return o; |
79072805 LW |
5291 | } |
5292 | ||
5293 | OP * | |
cea2e8a9 | 5294 | Perl_ck_eval(pTHX_ OP *o) |
79072805 | 5295 | { |
27da23d5 | 5296 | dVAR; |
3280af22 | 5297 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 5298 | if (o->op_flags & OPf_KIDS) { |
46c461b5 | 5299 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
79072805 | 5300 | |
93a17b20 | 5301 | if (!kid) { |
11343788 | 5302 | o->op_flags &= ~OPf_KIDS; |
93c66552 | 5303 | op_null(o); |
79072805 | 5304 | } |
b14574b4 | 5305 | else if (kid->op_type == OP_LINESEQ || kid->op_type == OP_STUB) { |
79072805 LW |
5306 | LOGOP *enter; |
5307 | ||
11343788 MB |
5308 | cUNOPo->op_first = 0; |
5309 | op_free(o); | |
79072805 | 5310 | |
b7dc083c | 5311 | NewOp(1101, enter, 1, LOGOP); |
79072805 | 5312 | enter->op_type = OP_ENTERTRY; |
22c35a8c | 5313 | enter->op_ppaddr = PL_ppaddr[OP_ENTERTRY]; |
79072805 LW |
5314 | enter->op_private = 0; |
5315 | ||
5316 | /* establish postfix order */ | |
5317 | enter->op_next = (OP*)enter; | |
5318 | ||
11343788 MB |
5319 | o = prepend_elem(OP_LINESEQ, (OP*)enter, (OP*)kid); |
5320 | o->op_type = OP_LEAVETRY; | |
22c35a8c | 5321 | o->op_ppaddr = PL_ppaddr[OP_LEAVETRY]; |
11343788 MB |
5322 | enter->op_other = o; |
5323 | return o; | |
79072805 | 5324 | } |
b5c19bd7 | 5325 | else { |
473986ff | 5326 | scalar((OP*)kid); |
b5c19bd7 DM |
5327 | PL_cv_has_eval = 1; |
5328 | } | |
79072805 LW |
5329 | } |
5330 | else { | |
11343788 | 5331 | op_free(o); |
54b9620d | 5332 | o = newUNOP(OP_ENTEREVAL, 0, newDEFSVOP()); |
79072805 | 5333 | } |
3280af22 | 5334 | o->op_targ = (PADOFFSET)PL_hints; |
7168684c | 5335 | if ((PL_hints & HINT_LOCALIZE_HH) != 0 && GvHV(PL_hintgv)) { |
0d863452 RH |
5336 | /* Store a copy of %^H that pp_entereval can pick up */ |
5337 | OP *hhop = newSVOP(OP_CONST, 0, (SV*)newHVhv(GvHV(PL_hintgv))); | |
5338 | cUNOPo->op_first->op_sibling = hhop; | |
5339 | o->op_private |= OPpEVAL_HAS_HH; | |
5340 | } | |
11343788 | 5341 | return o; |
79072805 LW |
5342 | } |
5343 | ||
5344 | OP * | |
d98f61e7 GS |
5345 | Perl_ck_exit(pTHX_ OP *o) |
5346 | { | |
5347 | #ifdef VMS | |
551405c4 | 5348 | HV * const table = GvHV(PL_hintgv); |
d98f61e7 | 5349 | if (table) { |
a4fc7abc | 5350 | SV * const * const svp = hv_fetchs(table, "vmsish_exit", FALSE); |
d98f61e7 GS |
5351 | if (svp && *svp && SvTRUE(*svp)) |
5352 | o->op_private |= OPpEXIT_VMSISH; | |
5353 | } | |
96e176bf | 5354 | if (VMSISH_HUSHED) o->op_private |= OPpHUSH_VMSISH; |
d98f61e7 GS |
5355 | #endif |
5356 | return ck_fun(o); | |
5357 | } | |
5358 | ||
5359 | OP * | |
cea2e8a9 | 5360 | Perl_ck_exec(pTHX_ OP *o) |
79072805 | 5361 | { |
11343788 | 5362 | if (o->op_flags & OPf_STACKED) { |
6867be6d | 5363 | OP *kid; |
11343788 MB |
5364 | o = ck_fun(o); |
5365 | kid = cUNOPo->op_first->op_sibling; | |
8990e307 | 5366 | if (kid->op_type == OP_RV2GV) |
93c66552 | 5367 | op_null(kid); |
79072805 | 5368 | } |
463ee0b2 | 5369 | else |
11343788 MB |
5370 | o = listkids(o); |
5371 | return o; | |
79072805 LW |
5372 | } |
5373 | ||
5374 | OP * | |
cea2e8a9 | 5375 | Perl_ck_exists(pTHX_ OP *o) |
5f05dabc | 5376 | { |
97aff369 | 5377 | dVAR; |
5196be3e MB |
5378 | o = ck_fun(o); |
5379 | if (o->op_flags & OPf_KIDS) { | |
46c461b5 | 5380 | OP * const kid = cUNOPo->op_first; |
afebc493 GS |
5381 | if (kid->op_type == OP_ENTERSUB) { |
5382 | (void) ref(kid, o->op_type); | |
5383 | if (kid->op_type != OP_RV2CV && !PL_error_count) | |
5384 | Perl_croak(aTHX_ "%s argument is not a subroutine name", | |
53e06cf0 | 5385 | OP_DESC(o)); |
afebc493 GS |
5386 | o->op_private |= OPpEXISTS_SUB; |
5387 | } | |
5388 | else if (kid->op_type == OP_AELEM) | |
01020589 GS |
5389 | o->op_flags |= OPf_SPECIAL; |
5390 | else if (kid->op_type != OP_HELEM) | |
5391 | Perl_croak(aTHX_ "%s argument is not a HASH or ARRAY element", | |
53e06cf0 | 5392 | OP_DESC(o)); |
93c66552 | 5393 | op_null(kid); |
5f05dabc | 5394 | } |
5196be3e | 5395 | return o; |
5f05dabc | 5396 | } |
5397 | ||
79072805 | 5398 | OP * |
cea2e8a9 | 5399 | Perl_ck_rvconst(pTHX_ register OP *o) |
79072805 | 5400 | { |
27da23d5 | 5401 | dVAR; |
0bd48802 | 5402 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
85e6fe83 | 5403 | |
3280af22 | 5404 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
e26df76a NC |
5405 | if (o->op_type == OP_RV2CV) |
5406 | o->op_private &= ~1; | |
5407 | ||
79072805 | 5408 | if (kid->op_type == OP_CONST) { |
44a8e56a | 5409 | int iscv; |
5410 | GV *gv; | |
504618e9 | 5411 | SV * const kidsv = kid->op_sv; |
44a8e56a | 5412 | |
779c5bc9 GS |
5413 | /* Is it a constant from cv_const_sv()? */ |
5414 | if (SvROK(kidsv) && SvREADONLY(kidsv)) { | |
0bd48802 | 5415 | SV * const rsv = SvRV(kidsv); |
504618e9 | 5416 | const int svtype = SvTYPE(rsv); |
bd61b366 | 5417 | const char *badtype = NULL; |
779c5bc9 GS |
5418 | |
5419 | switch (o->op_type) { | |
5420 | case OP_RV2SV: | |
5421 | if (svtype > SVt_PVMG) | |
5422 | badtype = "a SCALAR"; | |
5423 | break; | |
5424 | case OP_RV2AV: | |
5425 | if (svtype != SVt_PVAV) | |
5426 | badtype = "an ARRAY"; | |
5427 | break; | |
5428 | case OP_RV2HV: | |
6d822dc4 | 5429 | if (svtype != SVt_PVHV) |
779c5bc9 | 5430 | badtype = "a HASH"; |
779c5bc9 GS |
5431 | break; |
5432 | case OP_RV2CV: | |
5433 | if (svtype != SVt_PVCV) | |
5434 | badtype = "a CODE"; | |
5435 | break; | |
5436 | } | |
5437 | if (badtype) | |
cea2e8a9 | 5438 | Perl_croak(aTHX_ "Constant is not %s reference", badtype); |
779c5bc9 GS |
5439 | return o; |
5440 | } | |
ce10b5d1 RGS |
5441 | else if ((o->op_type == OP_RV2HV || o->op_type == OP_RV2SV) && |
5442 | (PL_hints & HINT_STRICT_REFS) && SvPOK(kidsv)) { | |
5443 | /* If this is an access to a stash, disable "strict refs", because | |
5444 | * stashes aren't auto-vivified at compile-time (unless we store | |
5445 | * symbols in them), and we don't want to produce a run-time | |
5446 | * stricture error when auto-vivifying the stash. */ | |
5447 | const char *s = SvPV_nolen(kidsv); | |
5448 | const STRLEN l = SvCUR(kidsv); | |
5449 | if (l > 1 && s[l-1] == ':' && s[l-2] == ':') | |
5450 | o->op_private &= ~HINT_STRICT_REFS; | |
5451 | } | |
5452 | if ((o->op_private & HINT_STRICT_REFS) && (kid->op_private & OPpCONST_BARE)) { | |
5f66b61c | 5453 | const char *badthing; |
5dc0d613 | 5454 | switch (o->op_type) { |
44a8e56a | 5455 | case OP_RV2SV: |
5456 | badthing = "a SCALAR"; | |
5457 | break; | |
5458 | case OP_RV2AV: | |
5459 | badthing = "an ARRAY"; | |
5460 | break; | |
5461 | case OP_RV2HV: | |
5462 | badthing = "a HASH"; | |
5463 | break; | |
5f66b61c AL |
5464 | default: |
5465 | badthing = NULL; | |
5466 | break; | |
44a8e56a | 5467 | } |
5468 | if (badthing) | |
1c846c1f | 5469 | Perl_croak(aTHX_ |
7a5fd60d NC |
5470 | "Can't use bareword (\"%"SVf"\") as %s ref while \"strict refs\" in use", |
5471 | kidsv, badthing); | |
44a8e56a | 5472 | } |
93233ece CS |
5473 | /* |
5474 | * This is a little tricky. We only want to add the symbol if we | |
5475 | * didn't add it in the lexer. Otherwise we get duplicate strict | |
5476 | * warnings. But if we didn't add it in the lexer, we must at | |
5477 | * least pretend like we wanted to add it even if it existed before, | |
5478 | * or we get possible typo warnings. OPpCONST_ENTERED says | |
5479 | * whether the lexer already added THIS instance of this symbol. | |
5480 | */ | |
5196be3e | 5481 | iscv = (o->op_type == OP_RV2CV) * 2; |
93233ece | 5482 | do { |
7a5fd60d | 5483 | gv = gv_fetchsv(kidsv, |
748a9306 | 5484 | iscv | !(kid->op_private & OPpCONST_ENTERED), |
a0d0e21e LW |
5485 | iscv |
5486 | ? SVt_PVCV | |
11343788 | 5487 | : o->op_type == OP_RV2SV |
a0d0e21e | 5488 | ? SVt_PV |
11343788 | 5489 | : o->op_type == OP_RV2AV |
a0d0e21e | 5490 | ? SVt_PVAV |
11343788 | 5491 | : o->op_type == OP_RV2HV |
a0d0e21e LW |
5492 | ? SVt_PVHV |
5493 | : SVt_PVGV); | |
93233ece CS |
5494 | } while (!gv && !(kid->op_private & OPpCONST_ENTERED) && !iscv++); |
5495 | if (gv) { | |
5496 | kid->op_type = OP_GV; | |
5497 | SvREFCNT_dec(kid->op_sv); | |
350de78d | 5498 | #ifdef USE_ITHREADS |
638eceb6 | 5499 | /* XXX hack: dependence on sizeof(PADOP) <= sizeof(SVOP) */ |
350de78d | 5500 | kPADOP->op_padix = pad_alloc(OP_GV, SVs_PADTMP); |
dd2155a4 | 5501 | SvREFCNT_dec(PAD_SVl(kPADOP->op_padix)); |
743e66e6 | 5502 | GvIN_PAD_on(gv); |
dd2155a4 | 5503 | PAD_SETSV(kPADOP->op_padix, (SV*) SvREFCNT_inc(gv)); |
350de78d | 5504 | #else |
93233ece | 5505 | kid->op_sv = SvREFCNT_inc(gv); |
350de78d | 5506 | #endif |
23f1ca44 | 5507 | kid->op_private = 0; |
76cd736e | 5508 | kid->op_ppaddr = PL_ppaddr[OP_GV]; |
a0d0e21e | 5509 | } |
79072805 | 5510 | } |
11343788 | 5511 | return o; |
79072805 LW |
5512 | } |
5513 | ||
5514 | OP * | |
cea2e8a9 | 5515 | Perl_ck_ftst(pTHX_ OP *o) |
79072805 | 5516 | { |
27da23d5 | 5517 | dVAR; |
6867be6d | 5518 | const I32 type = o->op_type; |
79072805 | 5519 | |
d0dca557 | 5520 | if (o->op_flags & OPf_REF) { |
bb263b4e | 5521 | /*EMPTY*/; |
d0dca557 JD |
5522 | } |
5523 | else if (o->op_flags & OPf_KIDS && cUNOPo->op_first->op_type != OP_STUB) { | |
551405c4 | 5524 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
79072805 LW |
5525 | |
5526 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
551405c4 | 5527 | OP * const newop = newGVOP(type, OPf_REF, |
f776e3cd | 5528 | gv_fetchsv(kid->op_sv, GV_ADD, SVt_PVIO)); |
11343788 | 5529 | op_free(o); |
d0dca557 | 5530 | o = newop; |
181bc48d | 5531 | return o; |
79072805 | 5532 | } |
1af34c76 JH |
5533 | else { |
5534 | if ((PL_hints & HINT_FILETEST_ACCESS) && | |
5535 | OP_IS_FILETEST_ACCESS(o)) | |
5536 | o->op_private |= OPpFT_ACCESS; | |
5537 | } | |
fbb0b3b3 RGS |
5538 | if (PL_check[kid->op_type] == MEMBER_TO_FPTR(Perl_ck_ftst) |
5539 | && kid->op_type != OP_STAT && kid->op_type != OP_LSTAT) | |
5540 | o->op_private |= OPpFT_STACKED; | |
79072805 LW |
5541 | } |
5542 | else { | |
11343788 | 5543 | op_free(o); |
79072805 | 5544 | if (type == OP_FTTTY) |
8fde6460 | 5545 | o = newGVOP(type, OPf_REF, PL_stdingv); |
79072805 | 5546 | else |
d0dca557 | 5547 | o = newUNOP(type, 0, newDEFSVOP()); |
79072805 | 5548 | } |
11343788 | 5549 | return o; |
79072805 LW |
5550 | } |
5551 | ||
5552 | OP * | |
cea2e8a9 | 5553 | Perl_ck_fun(pTHX_ OP *o) |
79072805 | 5554 | { |
97aff369 | 5555 | dVAR; |
6867be6d | 5556 | const int type = o->op_type; |
22c35a8c | 5557 | register I32 oa = PL_opargs[type] >> OASHIFT; |
aeea060c | 5558 | |
11343788 | 5559 | if (o->op_flags & OPf_STACKED) { |
79072805 LW |
5560 | if ((oa & OA_OPTIONAL) && (oa >> 4) && !((oa >> 4) & OA_OPTIONAL)) |
5561 | oa &= ~OA_OPTIONAL; | |
5562 | else | |
11343788 | 5563 | return no_fh_allowed(o); |
79072805 LW |
5564 | } |
5565 | ||
11343788 | 5566 | if (o->op_flags & OPf_KIDS) { |
6867be6d AL |
5567 | OP **tokid = &cLISTOPo->op_first; |
5568 | register OP *kid = cLISTOPo->op_first; | |
5569 | OP *sibl; | |
5570 | I32 numargs = 0; | |
5571 | ||
8990e307 | 5572 | if (kid->op_type == OP_PUSHMARK || |
155aba94 | 5573 | (kid->op_type == OP_NULL && kid->op_targ == OP_PUSHMARK)) |
8990e307 | 5574 | { |
79072805 LW |
5575 | tokid = &kid->op_sibling; |
5576 | kid = kid->op_sibling; | |
5577 | } | |
22c35a8c | 5578 | if (!kid && PL_opargs[type] & OA_DEFGV) |
54b9620d | 5579 | *tokid = kid = newDEFSVOP(); |
79072805 LW |
5580 | |
5581 | while (oa && kid) { | |
5582 | numargs++; | |
5583 | sibl = kid->op_sibling; | |
5584 | switch (oa & 7) { | |
5585 | case OA_SCALAR: | |
62c18ce2 GS |
5586 | /* list seen where single (scalar) arg expected? */ |
5587 | if (numargs == 1 && !(oa >> 4) | |
5588 | && kid->op_type == OP_LIST && type != OP_SCALAR) | |
5589 | { | |
5590 | return too_many_arguments(o,PL_op_desc[type]); | |
5591 | } | |
79072805 LW |
5592 | scalar(kid); |
5593 | break; | |
5594 | case OA_LIST: | |
5595 | if (oa < 16) { | |
5596 | kid = 0; | |
5597 | continue; | |
5598 | } | |
5599 | else | |
5600 | list(kid); | |
5601 | break; | |
5602 | case OA_AVREF: | |
936edb8b | 5603 | if ((type == OP_PUSH || type == OP_UNSHIFT) |
f87c3213 | 5604 | && !kid->op_sibling && ckWARN(WARN_SYNTAX)) |
9014280d | 5605 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
de4864e4 | 5606 | "Useless use of %s with no values", |
936edb8b | 5607 | PL_op_desc[type]); |
b2ffa427 | 5608 | |
79072805 | 5609 | if (kid->op_type == OP_CONST && |
62c18ce2 GS |
5610 | (kid->op_private & OPpCONST_BARE)) |
5611 | { | |
551405c4 | 5612 | OP * const newop = newAVREF(newGVOP(OP_GV, 0, |
f776e3cd | 5613 | gv_fetchsv(((SVOP*)kid)->op_sv, GV_ADD, SVt_PVAV) )); |
12bcd1a6 PM |
5614 | if (ckWARN2(WARN_DEPRECATED, WARN_SYNTAX)) |
5615 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), | |
7a5fd60d NC |
5616 | "Array @%"SVf" missing the @ in argument %"IVdf" of %s()", |
5617 | ((SVOP*)kid)->op_sv, (IV)numargs, PL_op_desc[type]); | |
79072805 LW |
5618 | op_free(kid); |
5619 | kid = newop; | |
5620 | kid->op_sibling = sibl; | |
5621 | *tokid = kid; | |
5622 | } | |
8990e307 | 5623 | else if (kid->op_type != OP_RV2AV && kid->op_type != OP_PADAV) |
35cd451c | 5624 | bad_type(numargs, "array", PL_op_desc[type], kid); |
a0d0e21e | 5625 | mod(kid, type); |
79072805 LW |
5626 | break; |
5627 | case OA_HVREF: | |
5628 | if (kid->op_type == OP_CONST && | |
62c18ce2 GS |
5629 | (kid->op_private & OPpCONST_BARE)) |
5630 | { | |
551405c4 | 5631 | OP * const newop = newHVREF(newGVOP(OP_GV, 0, |
f776e3cd | 5632 | gv_fetchsv(((SVOP*)kid)->op_sv, GV_ADD, SVt_PVHV) )); |
12bcd1a6 PM |
5633 | if (ckWARN2(WARN_DEPRECATED, WARN_SYNTAX)) |
5634 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), | |
7a5fd60d NC |
5635 | "Hash %%%"SVf" missing the %% in argument %"IVdf" of %s()", |
5636 | ((SVOP*)kid)->op_sv, (IV)numargs, PL_op_desc[type]); | |
79072805 LW |
5637 | op_free(kid); |
5638 | kid = newop; | |
5639 | kid->op_sibling = sibl; | |
5640 | *tokid = kid; | |
5641 | } | |
8990e307 | 5642 | else if (kid->op_type != OP_RV2HV && kid->op_type != OP_PADHV) |
35cd451c | 5643 | bad_type(numargs, "hash", PL_op_desc[type], kid); |
a0d0e21e | 5644 | mod(kid, type); |
79072805 LW |
5645 | break; |
5646 | case OA_CVREF: | |
5647 | { | |
551405c4 | 5648 | OP * const newop = newUNOP(OP_NULL, 0, kid); |
79072805 LW |
5649 | kid->op_sibling = 0; |
5650 | linklist(kid); | |
5651 | newop->op_next = newop; | |
5652 | kid = newop; | |
5653 | kid->op_sibling = sibl; | |
5654 | *tokid = kid; | |
5655 | } | |
5656 | break; | |
5657 | case OA_FILEREF: | |
c340be78 | 5658 | if (kid->op_type != OP_GV && kid->op_type != OP_RV2GV) { |
79072805 | 5659 | if (kid->op_type == OP_CONST && |
62c18ce2 GS |
5660 | (kid->op_private & OPpCONST_BARE)) |
5661 | { | |
0bd48802 | 5662 | OP * const newop = newGVOP(OP_GV, 0, |
f776e3cd | 5663 | gv_fetchsv(((SVOP*)kid)->op_sv, GV_ADD, SVt_PVIO)); |
afbdacea | 5664 | if (!(o->op_private & 1) && /* if not unop */ |
8a996ce8 | 5665 | kid == cLISTOPo->op_last) |
364daeac | 5666 | cLISTOPo->op_last = newop; |
79072805 LW |
5667 | op_free(kid); |
5668 | kid = newop; | |
5669 | } | |
1ea32a52 GS |
5670 | else if (kid->op_type == OP_READLINE) { |
5671 | /* neophyte patrol: open(<FH>), close(<FH>) etc. */ | |
53e06cf0 | 5672 | bad_type(numargs, "HANDLE", OP_DESC(o), kid); |
1ea32a52 | 5673 | } |
79072805 | 5674 | else { |
35cd451c | 5675 | I32 flags = OPf_SPECIAL; |
a6c40364 | 5676 | I32 priv = 0; |
2c8ac474 GS |
5677 | PADOFFSET targ = 0; |
5678 | ||
35cd451c | 5679 | /* is this op a FH constructor? */ |
853846ea | 5680 | if (is_handle_constructor(o,numargs)) { |
bd61b366 | 5681 | const char *name = NULL; |
dd2155a4 | 5682 | STRLEN len = 0; |
2c8ac474 GS |
5683 | |
5684 | flags = 0; | |
5685 | /* Set a flag to tell rv2gv to vivify | |
853846ea NIS |
5686 | * need to "prove" flag does not mean something |
5687 | * else already - NI-S 1999/05/07 | |
2c8ac474 GS |
5688 | */ |
5689 | priv = OPpDEREF; | |
5690 | if (kid->op_type == OP_PADSV) { | |
dd2155a4 DM |
5691 | name = PAD_COMPNAME_PV(kid->op_targ); |
5692 | /* SvCUR of a pad namesv can't be trusted | |
5693 | * (see PL_generation), so calc its length | |
5694 | * manually */ | |
5695 | if (name) | |
5696 | len = strlen(name); | |
5697 | ||
2c8ac474 GS |
5698 | } |
5699 | else if (kid->op_type == OP_RV2SV | |
5700 | && kUNOP->op_first->op_type == OP_GV) | |
5701 | { | |
0bd48802 | 5702 | GV * const gv = cGVOPx_gv(kUNOP->op_first); |
2c8ac474 GS |
5703 | name = GvNAME(gv); |
5704 | len = GvNAMELEN(gv); | |
5705 | } | |
afd1915d GS |
5706 | else if (kid->op_type == OP_AELEM |
5707 | || kid->op_type == OP_HELEM) | |
5708 | { | |
551405c4 | 5709 | OP *op = ((BINOP*)kid)->op_first; |
a4fc7abc | 5710 | name = NULL; |
551405c4 | 5711 | if (op) { |
a0714e2c | 5712 | SV *tmpstr = NULL; |
551405c4 | 5713 | const char * const a = |
0c4b0a3f JH |
5714 | kid->op_type == OP_AELEM ? |
5715 | "[]" : "{}"; | |
5716 | if (((op->op_type == OP_RV2AV) || | |
5717 | (op->op_type == OP_RV2HV)) && | |
5718 | (op = ((UNOP*)op)->op_first) && | |
5719 | (op->op_type == OP_GV)) { | |
5720 | /* packagevar $a[] or $h{} */ | |
551405c4 | 5721 | GV * const gv = cGVOPx_gv(op); |
0c4b0a3f JH |
5722 | if (gv) |
5723 | tmpstr = | |
5724 | Perl_newSVpvf(aTHX_ | |
5725 | "%s%c...%c", | |
5726 | GvNAME(gv), | |
5727 | a[0], a[1]); | |
5728 | } | |
5729 | else if (op->op_type == OP_PADAV | |
5730 | || op->op_type == OP_PADHV) { | |
5731 | /* lexicalvar $a[] or $h{} */ | |
551405c4 | 5732 | const char * const padname = |
0c4b0a3f JH |
5733 | PAD_COMPNAME_PV(op->op_targ); |
5734 | if (padname) | |
5735 | tmpstr = | |
5736 | Perl_newSVpvf(aTHX_ | |
5737 | "%s%c...%c", | |
5738 | padname + 1, | |
5739 | a[0], a[1]); | |
0c4b0a3f JH |
5740 | } |
5741 | if (tmpstr) { | |
93524f2b | 5742 | name = SvPV_const(tmpstr, len); |
0c4b0a3f JH |
5743 | sv_2mortal(tmpstr); |
5744 | } | |
5745 | } | |
5746 | if (!name) { | |
5747 | name = "__ANONIO__"; | |
5748 | len = 10; | |
5749 | } | |
5750 | mod(kid, type); | |
afd1915d | 5751 | } |
2c8ac474 GS |
5752 | if (name) { |
5753 | SV *namesv; | |
5754 | targ = pad_alloc(OP_RV2GV, SVs_PADTMP); | |
dd2155a4 | 5755 | namesv = PAD_SVl(targ); |
862a34c6 | 5756 | SvUPGRADE(namesv, SVt_PV); |
2c8ac474 GS |
5757 | if (*name != '$') |
5758 | sv_setpvn(namesv, "$", 1); | |
5759 | sv_catpvn(namesv, name, len); | |
5760 | } | |
853846ea | 5761 | } |
79072805 | 5762 | kid->op_sibling = 0; |
35cd451c | 5763 | kid = newUNOP(OP_RV2GV, flags, scalar(kid)); |
2c8ac474 GS |
5764 | kid->op_targ = targ; |
5765 | kid->op_private |= priv; | |
79072805 LW |
5766 | } |
5767 | kid->op_sibling = sibl; | |
5768 | *tokid = kid; | |
5769 | } | |
5770 | scalar(kid); | |
5771 | break; | |
5772 | case OA_SCALARREF: | |
a0d0e21e | 5773 | mod(scalar(kid), type); |
79072805 LW |
5774 | break; |
5775 | } | |
5776 | oa >>= 4; | |
5777 | tokid = &kid->op_sibling; | |
5778 | kid = kid->op_sibling; | |
5779 | } | |
11343788 | 5780 | o->op_private |= numargs; |
79072805 | 5781 | if (kid) |
53e06cf0 | 5782 | return too_many_arguments(o,OP_DESC(o)); |
11343788 | 5783 | listkids(o); |
79072805 | 5784 | } |
22c35a8c | 5785 | else if (PL_opargs[type] & OA_DEFGV) { |
11343788 | 5786 | op_free(o); |
54b9620d | 5787 | return newUNOP(type, 0, newDEFSVOP()); |
a0d0e21e LW |
5788 | } |
5789 | ||
79072805 LW |
5790 | if (oa) { |
5791 | while (oa & OA_OPTIONAL) | |
5792 | oa >>= 4; | |
5793 | if (oa && oa != OA_LIST) | |
53e06cf0 | 5794 | return too_few_arguments(o,OP_DESC(o)); |
79072805 | 5795 | } |
11343788 | 5796 | return o; |
79072805 LW |
5797 | } |
5798 | ||
5799 | OP * | |
cea2e8a9 | 5800 | Perl_ck_glob(pTHX_ OP *o) |
79072805 | 5801 | { |
27da23d5 | 5802 | dVAR; |
fb73857a | 5803 | GV *gv; |
5804 | ||
649da076 | 5805 | o = ck_fun(o); |
1f2bfc8a | 5806 | if ((o->op_flags & OPf_KIDS) && !cLISTOPo->op_first->op_sibling) |
54b9620d | 5807 | append_elem(OP_GLOB, o, newDEFSVOP()); |
fb73857a | 5808 | |
fafc274c | 5809 | if (!((gv = gv_fetchpvs("glob", GV_NOTQUAL, SVt_PVCV)) |
b9f751c0 GS |
5810 | && GvCVu(gv) && GvIMPORTED_CV(gv))) |
5811 | { | |
5c1737d1 | 5812 | gv = gv_fetchpvs("CORE::GLOBAL::glob", 0, SVt_PVCV); |
b9f751c0 | 5813 | } |
b1cb66bf | 5814 | |
52bb0670 | 5815 | #if !defined(PERL_EXTERNAL_GLOB) |
72b16652 | 5816 | /* XXX this can be tightened up and made more failsafe. */ |
f444d496 | 5817 | if (!(gv && GvCVu(gv) && GvIMPORTED_CV(gv))) { |
7d3fb230 | 5818 | GV *glob_gv; |
72b16652 | 5819 | ENTER; |
00ca71c1 | 5820 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, |
a0714e2c | 5821 | newSVpvs("File::Glob"), NULL, NULL, NULL); |
5c1737d1 NC |
5822 | gv = gv_fetchpvs("CORE::GLOBAL::glob", 0, SVt_PVCV); |
5823 | glob_gv = gv_fetchpvs("File::Glob::csh_glob", 0, SVt_PVCV); | |
7d3fb230 | 5824 | GvCV(gv) = GvCV(glob_gv); |
7fc63493 | 5825 | (void)SvREFCNT_inc((SV*)GvCV(gv)); |
7d3fb230 | 5826 | GvIMPORTED_CV_on(gv); |
72b16652 GS |
5827 | LEAVE; |
5828 | } | |
52bb0670 | 5829 | #endif /* PERL_EXTERNAL_GLOB */ |
72b16652 | 5830 | |
b9f751c0 | 5831 | if (gv && GvCVu(gv) && GvIMPORTED_CV(gv)) { |
5196be3e | 5832 | append_elem(OP_GLOB, o, |
80252599 | 5833 | newSVOP(OP_CONST, 0, newSViv(PL_glob_index++))); |
1f2bfc8a | 5834 | o->op_type = OP_LIST; |
22c35a8c | 5835 | o->op_ppaddr = PL_ppaddr[OP_LIST]; |
1f2bfc8a | 5836 | cLISTOPo->op_first->op_type = OP_PUSHMARK; |
22c35a8c | 5837 | cLISTOPo->op_first->op_ppaddr = PL_ppaddr[OP_PUSHMARK]; |
ad33f57d | 5838 | cLISTOPo->op_first->op_targ = 0; |
1f2bfc8a | 5839 | o = newUNOP(OP_ENTERSUB, OPf_STACKED, |
aeea060c | 5840 | append_elem(OP_LIST, o, |
1f2bfc8a MB |
5841 | scalar(newUNOP(OP_RV2CV, 0, |
5842 | newGVOP(OP_GV, 0, gv))))); | |
d58bf5aa MB |
5843 | o = newUNOP(OP_NULL, 0, ck_subr(o)); |
5844 | o->op_targ = OP_GLOB; /* hint at what it used to be */ | |
5845 | return o; | |
b1cb66bf | 5846 | } |
5847 | gv = newGVgen("main"); | |
a0d0e21e | 5848 | gv_IOadd(gv); |
11343788 MB |
5849 | append_elem(OP_GLOB, o, newGVOP(OP_GV, 0, gv)); |
5850 | scalarkids(o); | |
649da076 | 5851 | return o; |
79072805 LW |
5852 | } |
5853 | ||
5854 | OP * | |
cea2e8a9 | 5855 | Perl_ck_grep(pTHX_ OP *o) |
79072805 | 5856 | { |
27da23d5 | 5857 | dVAR; |
79072805 LW |
5858 | LOGOP *gwop; |
5859 | OP *kid; | |
6867be6d | 5860 | const OPCODE type = o->op_type == OP_GREPSTART ? OP_GREPWHILE : OP_MAPWHILE; |
59f00321 | 5861 | I32 offset; |
79072805 | 5862 | |
22c35a8c | 5863 | o->op_ppaddr = PL_ppaddr[OP_GREPSTART]; |
b7dc083c | 5864 | NewOp(1101, gwop, 1, LOGOP); |
aeea060c | 5865 | |
11343788 | 5866 | if (o->op_flags & OPf_STACKED) { |
a0d0e21e | 5867 | OP* k; |
11343788 MB |
5868 | o = ck_sort(o); |
5869 | kid = cLISTOPo->op_first->op_sibling; | |
d09ad856 BS |
5870 | if (!cUNOPx(kid)->op_next) |
5871 | Perl_croak(aTHX_ "panic: ck_grep"); | |
e3c9a8b9 | 5872 | for (k = cUNOPx(kid)->op_first; k; k = k->op_next) { |
a0d0e21e LW |
5873 | kid = k; |
5874 | } | |
5875 | kid->op_next = (OP*)gwop; | |
11343788 | 5876 | o->op_flags &= ~OPf_STACKED; |
93a17b20 | 5877 | } |
11343788 | 5878 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e LW |
5879 | if (type == OP_MAPWHILE) |
5880 | list(kid); | |
5881 | else | |
5882 | scalar(kid); | |
11343788 | 5883 | o = ck_fun(o); |
3280af22 | 5884 | if (PL_error_count) |
11343788 | 5885 | return o; |
aeea060c | 5886 | kid = cLISTOPo->op_first->op_sibling; |
79072805 | 5887 | if (kid->op_type != OP_NULL) |
cea2e8a9 | 5888 | Perl_croak(aTHX_ "panic: ck_grep"); |
79072805 LW |
5889 | kid = kUNOP->op_first; |
5890 | ||
a0d0e21e | 5891 | gwop->op_type = type; |
22c35a8c | 5892 | gwop->op_ppaddr = PL_ppaddr[type]; |
11343788 | 5893 | gwop->op_first = listkids(o); |
79072805 | 5894 | gwop->op_flags |= OPf_KIDS; |
79072805 | 5895 | gwop->op_other = LINKLIST(kid); |
79072805 | 5896 | kid->op_next = (OP*)gwop; |
59f00321 RGS |
5897 | offset = pad_findmy("$_"); |
5898 | if (offset == NOT_IN_PAD || PAD_COMPNAME_FLAGS(offset) & SVpad_OUR) { | |
5899 | o->op_private = gwop->op_private = 0; | |
5900 | gwop->op_targ = pad_alloc(type, SVs_PADTMP); | |
5901 | } | |
5902 | else { | |
5903 | o->op_private = gwop->op_private = OPpGREP_LEX; | |
5904 | gwop->op_targ = o->op_targ = offset; | |
5905 | } | |
79072805 | 5906 | |
11343788 | 5907 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e | 5908 | if (!kid || !kid->op_sibling) |
53e06cf0 | 5909 | return too_few_arguments(o,OP_DESC(o)); |
a0d0e21e LW |
5910 | for (kid = kid->op_sibling; kid; kid = kid->op_sibling) |
5911 | mod(kid, OP_GREPSTART); | |
5912 | ||
79072805 LW |
5913 | return (OP*)gwop; |
5914 | } | |
5915 | ||
5916 | OP * | |
cea2e8a9 | 5917 | Perl_ck_index(pTHX_ OP *o) |
79072805 | 5918 | { |
11343788 MB |
5919 | if (o->op_flags & OPf_KIDS) { |
5920 | OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
0b71040e LW |
5921 | if (kid) |
5922 | kid = kid->op_sibling; /* get past "big" */ | |
79072805 | 5923 | if (kid && kid->op_type == OP_CONST) |
2779dcf1 | 5924 | fbm_compile(((SVOP*)kid)->op_sv, 0); |
79072805 | 5925 | } |
11343788 | 5926 | return ck_fun(o); |
79072805 LW |
5927 | } |
5928 | ||
5929 | OP * | |
cea2e8a9 | 5930 | Perl_ck_lengthconst(pTHX_ OP *o) |
79072805 LW |
5931 | { |
5932 | /* XXX length optimization goes here */ | |
11343788 | 5933 | return ck_fun(o); |
79072805 LW |
5934 | } |
5935 | ||
5936 | OP * | |
cea2e8a9 | 5937 | Perl_ck_lfun(pTHX_ OP *o) |
79072805 | 5938 | { |
6867be6d | 5939 | const OPCODE type = o->op_type; |
5dc0d613 | 5940 | return modkids(ck_fun(o), type); |
79072805 LW |
5941 | } |
5942 | ||
5943 | OP * | |
cea2e8a9 | 5944 | Perl_ck_defined(pTHX_ OP *o) /* 19990527 MJD */ |
69794302 | 5945 | { |
12bcd1a6 | 5946 | if ((o->op_flags & OPf_KIDS) && ckWARN2(WARN_DEPRECATED, WARN_SYNTAX)) { |
d0334bed GS |
5947 | switch (cUNOPo->op_first->op_type) { |
5948 | case OP_RV2AV: | |
a8739d98 JH |
5949 | /* This is needed for |
5950 | if (defined %stash::) | |
5951 | to work. Do not break Tk. | |
5952 | */ | |
1c846c1f | 5953 | break; /* Globals via GV can be undef */ |
d0334bed GS |
5954 | case OP_PADAV: |
5955 | case OP_AASSIGN: /* Is this a good idea? */ | |
12bcd1a6 | 5956 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
f10b0346 | 5957 | "defined(@array) is deprecated"); |
12bcd1a6 | 5958 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
cc507455 | 5959 | "\t(Maybe you should just omit the defined()?)\n"); |
69794302 | 5960 | break; |
d0334bed | 5961 | case OP_RV2HV: |
a8739d98 JH |
5962 | /* This is needed for |
5963 | if (defined %stash::) | |
5964 | to work. Do not break Tk. | |
5965 | */ | |
1c846c1f | 5966 | break; /* Globals via GV can be undef */ |
d0334bed | 5967 | case OP_PADHV: |
12bcd1a6 | 5968 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
894356b3 | 5969 | "defined(%%hash) is deprecated"); |
12bcd1a6 | 5970 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), |
cc507455 | 5971 | "\t(Maybe you should just omit the defined()?)\n"); |
d0334bed GS |
5972 | break; |
5973 | default: | |
5974 | /* no warning */ | |
5975 | break; | |
5976 | } | |
69794302 MJD |
5977 | } |
5978 | return ck_rfun(o); | |
5979 | } | |
5980 | ||
5981 | OP * | |
cea2e8a9 | 5982 | Perl_ck_rfun(pTHX_ OP *o) |
8990e307 | 5983 | { |
6867be6d | 5984 | const OPCODE type = o->op_type; |
5dc0d613 | 5985 | return refkids(ck_fun(o), type); |
8990e307 LW |
5986 | } |
5987 | ||
5988 | OP * | |
cea2e8a9 | 5989 | Perl_ck_listiob(pTHX_ OP *o) |
79072805 LW |
5990 | { |
5991 | register OP *kid; | |
aeea060c | 5992 | |
11343788 | 5993 | kid = cLISTOPo->op_first; |
79072805 | 5994 | if (!kid) { |
11343788 MB |
5995 | o = force_list(o); |
5996 | kid = cLISTOPo->op_first; | |
79072805 LW |
5997 | } |
5998 | if (kid->op_type == OP_PUSHMARK) | |
5999 | kid = kid->op_sibling; | |
11343788 | 6000 | if (kid && o->op_flags & OPf_STACKED) |
79072805 LW |
6001 | kid = kid->op_sibling; |
6002 | else if (kid && !kid->op_sibling) { /* print HANDLE; */ | |
6003 | if (kid->op_type == OP_CONST && kid->op_private & OPpCONST_BARE) { | |
11343788 | 6004 | o->op_flags |= OPf_STACKED; /* make it a filehandle */ |
748a9306 | 6005 | kid = newUNOP(OP_RV2GV, OPf_REF, scalar(kid)); |
11343788 MB |
6006 | cLISTOPo->op_first->op_sibling = kid; |
6007 | cLISTOPo->op_last = kid; | |
79072805 LW |
6008 | kid = kid->op_sibling; |
6009 | } | |
6010 | } | |
b2ffa427 | 6011 | |
79072805 | 6012 | if (!kid) |
54b9620d | 6013 | append_elem(o->op_type, o, newDEFSVOP()); |
79072805 | 6014 | |
2de3dbcc | 6015 | return listkids(o); |
bbce6d69 | 6016 | } |
6017 | ||
6018 | OP * | |
0d863452 RH |
6019 | Perl_ck_say(pTHX_ OP *o) |
6020 | { | |
6021 | o = ck_listiob(o); | |
6022 | o->op_type = OP_PRINT; | |
6023 | cLISTOPo->op_last = cLISTOPo->op_last->op_sibling | |
396482e1 | 6024 | = newSVOP(OP_CONST, 0, newSVpvs("\n")); |
0d863452 RH |
6025 | return o; |
6026 | } | |
6027 | ||
6028 | OP * | |
6029 | Perl_ck_smartmatch(pTHX_ OP *o) | |
6030 | { | |
97aff369 | 6031 | dVAR; |
0d863452 RH |
6032 | if (0 == (o->op_flags & OPf_SPECIAL)) { |
6033 | OP *first = cBINOPo->op_first; | |
6034 | OP *second = first->op_sibling; | |
6035 | ||
6036 | /* Implicitly take a reference to an array or hash */ | |
5f66b61c | 6037 | first->op_sibling = NULL; |
0d863452 RH |
6038 | first = cBINOPo->op_first = ref_array_or_hash(first); |
6039 | second = first->op_sibling = ref_array_or_hash(second); | |
6040 | ||
6041 | /* Implicitly take a reference to a regular expression */ | |
6042 | if (first->op_type == OP_MATCH) { | |
6043 | first->op_type = OP_QR; | |
6044 | first->op_ppaddr = PL_ppaddr[OP_QR]; | |
6045 | } | |
6046 | if (second->op_type == OP_MATCH) { | |
6047 | second->op_type = OP_QR; | |
6048 | second->op_ppaddr = PL_ppaddr[OP_QR]; | |
6049 | } | |
6050 | } | |
6051 | ||
6052 | return o; | |
6053 | } | |
6054 | ||
6055 | ||
6056 | OP * | |
b162f9ea IZ |
6057 | Perl_ck_sassign(pTHX_ OP *o) |
6058 | { | |
6059 | OP *kid = cLISTOPo->op_first; | |
6060 | /* has a disposable target? */ | |
6061 | if ((PL_opargs[kid->op_type] & OA_TARGLEX) | |
6b66af17 GS |
6062 | && !(kid->op_flags & OPf_STACKED) |
6063 | /* Cannot steal the second time! */ | |
6064 | && !(kid->op_private & OPpTARGET_MY)) | |
b162f9ea | 6065 | { |
551405c4 | 6066 | OP * const kkid = kid->op_sibling; |
b162f9ea IZ |
6067 | |
6068 | /* Can just relocate the target. */ | |
2c2d71f5 JH |
6069 | if (kkid && kkid->op_type == OP_PADSV |
6070 | && !(kkid->op_private & OPpLVAL_INTRO)) | |
6071 | { | |
b162f9ea | 6072 | kid->op_targ = kkid->op_targ; |
743e66e6 | 6073 | kkid->op_targ = 0; |
b162f9ea IZ |
6074 | /* Now we do not need PADSV and SASSIGN. */ |
6075 | kid->op_sibling = o->op_sibling; /* NULL */ | |
6076 | cLISTOPo->op_first = NULL; | |
6077 | op_free(o); | |
6078 | op_free(kkid); | |
6079 | kid->op_private |= OPpTARGET_MY; /* Used for context settings */ | |
6080 | return kid; | |
6081 | } | |
6082 | } | |
6083 | return o; | |
6084 | } | |
6085 | ||
6086 | OP * | |
cea2e8a9 | 6087 | Perl_ck_match(pTHX_ OP *o) |
79072805 | 6088 | { |
97aff369 | 6089 | dVAR; |
0d863452 | 6090 | if (o->op_type != OP_QR && PL_compcv) { |
6867be6d | 6091 | const I32 offset = pad_findmy("$_"); |
59f00321 RGS |
6092 | if (offset != NOT_IN_PAD && !(PAD_COMPNAME_FLAGS(offset) & SVpad_OUR)) { |
6093 | o->op_targ = offset; | |
6094 | o->op_private |= OPpTARGET_MY; | |
6095 | } | |
6096 | } | |
6097 | if (o->op_type == OP_MATCH || o->op_type == OP_QR) | |
6098 | o->op_private |= OPpRUNTIME; | |
11343788 | 6099 | return o; |
79072805 LW |
6100 | } |
6101 | ||
6102 | OP * | |
f5d5a27c CS |
6103 | Perl_ck_method(pTHX_ OP *o) |
6104 | { | |
551405c4 | 6105 | OP * const kid = cUNOPo->op_first; |
f5d5a27c CS |
6106 | if (kid->op_type == OP_CONST) { |
6107 | SV* sv = kSVOP->op_sv; | |
a4fc7abc AL |
6108 | const char * const method = SvPVX_const(sv); |
6109 | if (!(strchr(method, ':') || strchr(method, '\''))) { | |
f5d5a27c | 6110 | OP *cmop; |
1c846c1f | 6111 | if (!SvREADONLY(sv) || !SvFAKE(sv)) { |
a4fc7abc | 6112 | sv = newSVpvn_share(method, SvCUR(sv), 0); |
1c846c1f NIS |
6113 | } |
6114 | else { | |
a0714e2c | 6115 | kSVOP->op_sv = NULL; |
1c846c1f | 6116 | } |
f5d5a27c | 6117 | cmop = newSVOP(OP_METHOD_NAMED, 0, sv); |
f5d5a27c CS |
6118 | op_free(o); |
6119 | return cmop; | |
6120 | } | |
6121 | } | |
6122 | return o; | |
6123 | } | |
6124 | ||
6125 | OP * | |
cea2e8a9 | 6126 | Perl_ck_null(pTHX_ OP *o) |
79072805 | 6127 | { |
11343788 | 6128 | return o; |
79072805 LW |
6129 | } |
6130 | ||
6131 | OP * | |
16fe6d59 GS |
6132 | Perl_ck_open(pTHX_ OP *o) |
6133 | { | |
97aff369 | 6134 | dVAR; |
551405c4 | 6135 | HV * const table = GvHV(PL_hintgv); |
16fe6d59 | 6136 | if (table) { |
a4fc7abc | 6137 | SV **svp = hv_fetchs(table, "open_IN", FALSE); |
16fe6d59 | 6138 | if (svp && *svp) { |
551405c4 | 6139 | const I32 mode = mode_from_discipline(*svp); |
16fe6d59 GS |
6140 | if (mode & O_BINARY) |
6141 | o->op_private |= OPpOPEN_IN_RAW; | |
6142 | else if (mode & O_TEXT) | |
6143 | o->op_private |= OPpOPEN_IN_CRLF; | |
6144 | } | |
6145 | ||
a4fc7abc | 6146 | svp = hv_fetchs(table, "open_OUT", FALSE); |
16fe6d59 | 6147 | if (svp && *svp) { |
551405c4 | 6148 | const I32 mode = mode_from_discipline(*svp); |
16fe6d59 GS |
6149 | if (mode & O_BINARY) |
6150 | o->op_private |= OPpOPEN_OUT_RAW; | |
6151 | else if (mode & O_TEXT) | |
6152 | o->op_private |= OPpOPEN_OUT_CRLF; | |
6153 | } | |
6154 | } | |
6155 | if (o->op_type == OP_BACKTICK) | |
6156 | return o; | |
3b82e551 JH |
6157 | { |
6158 | /* In case of three-arg dup open remove strictness | |
6159 | * from the last arg if it is a bareword. */ | |
551405c4 AL |
6160 | OP * const first = cLISTOPx(o)->op_first; /* The pushmark. */ |
6161 | OP * const last = cLISTOPx(o)->op_last; /* The bareword. */ | |
3b82e551 | 6162 | OP *oa; |
b15aece3 | 6163 | const char *mode; |
3b82e551 JH |
6164 | |
6165 | if ((last->op_type == OP_CONST) && /* The bareword. */ | |
6166 | (last->op_private & OPpCONST_BARE) && | |
6167 | (last->op_private & OPpCONST_STRICT) && | |
6168 | (oa = first->op_sibling) && /* The fh. */ | |
6169 | (oa = oa->op_sibling) && /* The mode. */ | |
ea1d064a | 6170 | (oa->op_type == OP_CONST) && |
3b82e551 | 6171 | SvPOK(((SVOP*)oa)->op_sv) && |
b15aece3 | 6172 | (mode = SvPVX_const(((SVOP*)oa)->op_sv)) && |
3b82e551 JH |
6173 | mode[0] == '>' && mode[1] == '&' && /* A dup open. */ |
6174 | (last == oa->op_sibling)) /* The bareword. */ | |
6175 | last->op_private &= ~OPpCONST_STRICT; | |
6176 | } | |
16fe6d59 GS |
6177 | return ck_fun(o); |
6178 | } | |
6179 | ||
6180 | OP * | |
cea2e8a9 | 6181 | Perl_ck_repeat(pTHX_ OP *o) |
79072805 | 6182 | { |
11343788 MB |
6183 | if (cBINOPo->op_first->op_flags & OPf_PARENS) { |
6184 | o->op_private |= OPpREPEAT_DOLIST; | |
6185 | cBINOPo->op_first = force_list(cBINOPo->op_first); | |
79072805 LW |
6186 | } |
6187 | else | |
11343788 MB |
6188 | scalar(o); |
6189 | return o; | |
79072805 LW |
6190 | } |
6191 | ||
6192 | OP * | |
cea2e8a9 | 6193 | Perl_ck_require(pTHX_ OP *o) |
8990e307 | 6194 | { |
97aff369 | 6195 | dVAR; |
a0714e2c | 6196 | GV* gv = NULL; |
ec4ab249 | 6197 | |
11343788 | 6198 | if (o->op_flags & OPf_KIDS) { /* Shall we supply missing .pm? */ |
551405c4 | 6199 | SVOP * const kid = (SVOP*)cUNOPo->op_first; |
8990e307 LW |
6200 | |
6201 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
551405c4 | 6202 | SV * const sv = kid->op_sv; |
5c144d81 | 6203 | U32 was_readonly = SvREADONLY(sv); |
8990e307 | 6204 | char *s; |
5c144d81 NC |
6205 | |
6206 | if (was_readonly) { | |
6207 | if (SvFAKE(sv)) { | |
6208 | sv_force_normal_flags(sv, 0); | |
6209 | assert(!SvREADONLY(sv)); | |
6210 | was_readonly = 0; | |
6211 | } else { | |
6212 | SvREADONLY_off(sv); | |
6213 | } | |
6214 | } | |
6215 | ||
6216 | for (s = SvPVX(sv); *s; s++) { | |
a0d0e21e | 6217 | if (*s == ':' && s[1] == ':') { |
42d9b98d | 6218 | const STRLEN len = strlen(s+2)+1; |
a0d0e21e | 6219 | *s = '/'; |
42d9b98d | 6220 | Move(s+2, s+1, len, char); |
5c144d81 | 6221 | SvCUR_set(sv, SvCUR(sv) - 1); |
a0d0e21e | 6222 | } |
8990e307 | 6223 | } |
396482e1 | 6224 | sv_catpvs(sv, ".pm"); |
5c144d81 | 6225 | SvFLAGS(sv) |= was_readonly; |
8990e307 LW |
6226 | } |
6227 | } | |
ec4ab249 | 6228 | |
a72a1c8b RGS |
6229 | if (!(o->op_flags & OPf_SPECIAL)) { /* Wasn't written as CORE::require */ |
6230 | /* handle override, if any */ | |
fafc274c | 6231 | gv = gv_fetchpvs("require", GV_NOTQUAL, SVt_PVCV); |
d6a985f2 | 6232 | if (!(gv && GvCVu(gv) && GvIMPORTED_CV(gv))) { |
a4fc7abc | 6233 | GV * const * const gvp = (GV**)hv_fetchs(PL_globalstash, "require", FALSE); |
a0714e2c | 6234 | gv = gvp ? *gvp : NULL; |
d6a985f2 | 6235 | } |
a72a1c8b | 6236 | } |
ec4ab249 | 6237 | |
b9f751c0 | 6238 | if (gv && GvCVu(gv) && GvIMPORTED_CV(gv)) { |
551405c4 | 6239 | OP * const kid = cUNOPo->op_first; |
ec4ab249 GA |
6240 | cUNOPo->op_first = 0; |
6241 | op_free(o); | |
6242 | return ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, | |
6243 | append_elem(OP_LIST, kid, | |
6244 | scalar(newUNOP(OP_RV2CV, 0, | |
6245 | newGVOP(OP_GV, 0, | |
6246 | gv)))))); | |
6247 | } | |
6248 | ||
11343788 | 6249 | return ck_fun(o); |
8990e307 LW |
6250 | } |
6251 | ||
78f9721b SM |
6252 | OP * |
6253 | Perl_ck_return(pTHX_ OP *o) | |
6254 | { | |
97aff369 | 6255 | dVAR; |
78f9721b | 6256 | if (CvLVALUE(PL_compcv)) { |
6867be6d | 6257 | OP *kid; |
78f9721b SM |
6258 | for (kid = cLISTOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
6259 | mod(kid, OP_LEAVESUBLV); | |
6260 | } | |
6261 | return o; | |
6262 | } | |
6263 | ||
79072805 | 6264 | OP * |
cea2e8a9 | 6265 | Perl_ck_select(pTHX_ OP *o) |
79072805 | 6266 | { |
27da23d5 | 6267 | dVAR; |
c07a80fd | 6268 | OP* kid; |
11343788 MB |
6269 | if (o->op_flags & OPf_KIDS) { |
6270 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
2304df62 | 6271 | if (kid && kid->op_sibling) { |
11343788 | 6272 | o->op_type = OP_SSELECT; |
22c35a8c | 6273 | o->op_ppaddr = PL_ppaddr[OP_SSELECT]; |
11343788 MB |
6274 | o = ck_fun(o); |
6275 | return fold_constants(o); | |
79072805 LW |
6276 | } |
6277 | } | |
11343788 MB |
6278 | o = ck_fun(o); |
6279 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
c07a80fd | 6280 | if (kid && kid->op_type == OP_RV2GV) |
6281 | kid->op_private &= ~HINT_STRICT_REFS; | |
11343788 | 6282 | return o; |
79072805 LW |
6283 | } |
6284 | ||
6285 | OP * | |
cea2e8a9 | 6286 | Perl_ck_shift(pTHX_ OP *o) |
79072805 | 6287 | { |
97aff369 | 6288 | dVAR; |
6867be6d | 6289 | const I32 type = o->op_type; |
79072805 | 6290 | |
11343788 | 6291 | if (!(o->op_flags & OPf_KIDS)) { |
6d4ff0d2 | 6292 | OP *argop; |
b2ffa427 | 6293 | |
11343788 | 6294 | op_free(o); |
6d4ff0d2 | 6295 | argop = newUNOP(OP_RV2AV, 0, |
8fde6460 | 6296 | scalar(newGVOP(OP_GV, 0, CvUNIQUE(PL_compcv) ? PL_argvgv : PL_defgv))); |
6d4ff0d2 | 6297 | return newUNOP(type, 0, scalar(argop)); |
79072805 | 6298 | } |
11343788 | 6299 | return scalar(modkids(ck_fun(o), type)); |
79072805 LW |
6300 | } |
6301 | ||
6302 | OP * | |
cea2e8a9 | 6303 | Perl_ck_sort(pTHX_ OP *o) |
79072805 | 6304 | { |
97aff369 | 6305 | dVAR; |
8e3f9bdf | 6306 | OP *firstkid; |
bbce6d69 | 6307 | |
7b9ef140 RH |
6308 | if (o->op_type == OP_SORT && (PL_hints & HINT_LOCALIZE_HH) != 0) |
6309 | { | |
a4fc7abc | 6310 | HV * const hinthv = GvHV(PL_hintgv); |
7b9ef140 | 6311 | if (hinthv) { |
a4fc7abc | 6312 | SV ** const svp = hv_fetchs(hinthv, "sort", FALSE); |
7b9ef140 | 6313 | if (svp) { |
a4fc7abc | 6314 | const I32 sorthints = (I32)SvIV(*svp); |
7b9ef140 RH |
6315 | if ((sorthints & HINT_SORT_QUICKSORT) != 0) |
6316 | o->op_private |= OPpSORT_QSORT; | |
6317 | if ((sorthints & HINT_SORT_STABLE) != 0) | |
6318 | o->op_private |= OPpSORT_STABLE; | |
6319 | } | |
6320 | } | |
6321 | } | |
6322 | ||
9ea6e965 | 6323 | if (o->op_type == OP_SORT && o->op_flags & OPf_STACKED) |
51a19bc0 | 6324 | simplify_sort(o); |
8e3f9bdf GS |
6325 | firstkid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
6326 | if (o->op_flags & OPf_STACKED) { /* may have been cleared */ | |
9c5ffd7c | 6327 | OP *k = NULL; |
8e3f9bdf | 6328 | OP *kid = cUNOPx(firstkid)->op_first; /* get past null */ |
79072805 | 6329 | |
463ee0b2 | 6330 | if (kid->op_type == OP_SCOPE || kid->op_type == OP_LEAVE) { |
79072805 | 6331 | linklist(kid); |
463ee0b2 LW |
6332 | if (kid->op_type == OP_SCOPE) { |
6333 | k = kid->op_next; | |
6334 | kid->op_next = 0; | |
79072805 | 6335 | } |
463ee0b2 | 6336 | else if (kid->op_type == OP_LEAVE) { |
11343788 | 6337 | if (o->op_type == OP_SORT) { |
93c66552 | 6338 | op_null(kid); /* wipe out leave */ |
748a9306 | 6339 | kid->op_next = kid; |
463ee0b2 | 6340 | |
748a9306 LW |
6341 | for (k = kLISTOP->op_first->op_next; k; k = k->op_next) { |
6342 | if (k->op_next == kid) | |
6343 | k->op_next = 0; | |
71a29c3c GS |
6344 | /* don't descend into loops */ |
6345 | else if (k->op_type == OP_ENTERLOOP | |
6346 | || k->op_type == OP_ENTERITER) | |
6347 | { | |
6348 | k = cLOOPx(k)->op_lastop; | |
6349 | } | |
748a9306 | 6350 | } |
463ee0b2 | 6351 | } |
748a9306 LW |
6352 | else |
6353 | kid->op_next = 0; /* just disconnect the leave */ | |
a0d0e21e | 6354 | k = kLISTOP->op_first; |
463ee0b2 | 6355 | } |
a2efc822 | 6356 | CALL_PEEP(k); |
a0d0e21e | 6357 | |
8e3f9bdf GS |
6358 | kid = firstkid; |
6359 | if (o->op_type == OP_SORT) { | |
6360 | /* provide scalar context for comparison function/block */ | |
6361 | kid = scalar(kid); | |
a0d0e21e | 6362 | kid->op_next = kid; |
8e3f9bdf | 6363 | } |
a0d0e21e LW |
6364 | else |
6365 | kid->op_next = k; | |
11343788 | 6366 | o->op_flags |= OPf_SPECIAL; |
79072805 | 6367 | } |
c6e96bcb | 6368 | else if (kid->op_type == OP_RV2SV || kid->op_type == OP_PADSV) |
93c66552 | 6369 | op_null(firstkid); |
8e3f9bdf GS |
6370 | |
6371 | firstkid = firstkid->op_sibling; | |
79072805 | 6372 | } |
bbce6d69 | 6373 | |
8e3f9bdf GS |
6374 | /* provide list context for arguments */ |
6375 | if (o->op_type == OP_SORT) | |
6376 | list(firstkid); | |
6377 | ||
11343788 | 6378 | return o; |
79072805 | 6379 | } |
bda4119b GS |
6380 | |
6381 | STATIC void | |
cea2e8a9 | 6382 | S_simplify_sort(pTHX_ OP *o) |
9c007264 | 6383 | { |
97aff369 | 6384 | dVAR; |
9c007264 JH |
6385 | register OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
6386 | OP *k; | |
eb209983 | 6387 | int descending; |
350de78d | 6388 | GV *gv; |
770526c1 | 6389 | const char *gvname; |
9c007264 JH |
6390 | if (!(o->op_flags & OPf_STACKED)) |
6391 | return; | |
fafc274c NC |
6392 | GvMULTI_on(gv_fetchpvs("a", GV_ADD|GV_NOTQUAL, SVt_PV)); |
6393 | GvMULTI_on(gv_fetchpvs("b", GV_ADD|GV_NOTQUAL, SVt_PV)); | |
82092f1d | 6394 | kid = kUNOP->op_first; /* get past null */ |
9c007264 JH |
6395 | if (kid->op_type != OP_SCOPE) |
6396 | return; | |
6397 | kid = kLISTOP->op_last; /* get past scope */ | |
6398 | switch(kid->op_type) { | |
6399 | case OP_NCMP: | |
6400 | case OP_I_NCMP: | |
6401 | case OP_SCMP: | |
6402 | break; | |
6403 | default: | |
6404 | return; | |
6405 | } | |
6406 | k = kid; /* remember this node*/ | |
6407 | if (kBINOP->op_first->op_type != OP_RV2SV) | |
6408 | return; | |
6409 | kid = kBINOP->op_first; /* get past cmp */ | |
6410 | if (kUNOP->op_first->op_type != OP_GV) | |
6411 | return; | |
6412 | kid = kUNOP->op_first; /* get past rv2sv */ | |
638eceb6 | 6413 | gv = kGVOP_gv; |
350de78d | 6414 | if (GvSTASH(gv) != PL_curstash) |
9c007264 | 6415 | return; |
770526c1 NC |
6416 | gvname = GvNAME(gv); |
6417 | if (*gvname == 'a' && gvname[1] == '\0') | |
eb209983 | 6418 | descending = 0; |
770526c1 | 6419 | else if (*gvname == 'b' && gvname[1] == '\0') |
eb209983 | 6420 | descending = 1; |
9c007264 JH |
6421 | else |
6422 | return; | |
eb209983 | 6423 | |
9c007264 JH |
6424 | kid = k; /* back to cmp */ |
6425 | if (kBINOP->op_last->op_type != OP_RV2SV) | |
6426 | return; | |
6427 | kid = kBINOP->op_last; /* down to 2nd arg */ | |
6428 | if (kUNOP->op_first->op_type != OP_GV) | |
6429 | return; | |
6430 | kid = kUNOP->op_first; /* get past rv2sv */ | |
638eceb6 | 6431 | gv = kGVOP_gv; |
770526c1 NC |
6432 | if (GvSTASH(gv) != PL_curstash) |
6433 | return; | |
6434 | gvname = GvNAME(gv); | |
6435 | if ( descending | |
6436 | ? !(*gvname == 'a' && gvname[1] == '\0') | |
6437 | : !(*gvname == 'b' && gvname[1] == '\0')) | |
9c007264 JH |
6438 | return; |
6439 | o->op_flags &= ~(OPf_STACKED | OPf_SPECIAL); | |
eb209983 NC |
6440 | if (descending) |
6441 | o->op_private |= OPpSORT_DESCEND; | |
9c007264 JH |
6442 | if (k->op_type == OP_NCMP) |
6443 | o->op_private |= OPpSORT_NUMERIC; | |
6444 | if (k->op_type == OP_I_NCMP) | |
6445 | o->op_private |= OPpSORT_NUMERIC | OPpSORT_INTEGER; | |
e507f050 SM |
6446 | kid = cLISTOPo->op_first->op_sibling; |
6447 | cLISTOPo->op_first->op_sibling = kid->op_sibling; /* bypass old block */ | |
6448 | op_free(kid); /* then delete it */ | |
9c007264 | 6449 | } |
79072805 LW |
6450 | |
6451 | OP * | |
cea2e8a9 | 6452 | Perl_ck_split(pTHX_ OP *o) |
79072805 | 6453 | { |
27da23d5 | 6454 | dVAR; |
79072805 | 6455 | register OP *kid; |
aeea060c | 6456 | |
11343788 MB |
6457 | if (o->op_flags & OPf_STACKED) |
6458 | return no_fh_allowed(o); | |
79072805 | 6459 | |
11343788 | 6460 | kid = cLISTOPo->op_first; |
8990e307 | 6461 | if (kid->op_type != OP_NULL) |
cea2e8a9 | 6462 | Perl_croak(aTHX_ "panic: ck_split"); |
8990e307 | 6463 | kid = kid->op_sibling; |
11343788 MB |
6464 | op_free(cLISTOPo->op_first); |
6465 | cLISTOPo->op_first = kid; | |
85e6fe83 | 6466 | if (!kid) { |
396482e1 | 6467 | cLISTOPo->op_first = kid = newSVOP(OP_CONST, 0, newSVpvs(" ")); |
11343788 | 6468 | cLISTOPo->op_last = kid; /* There was only one element previously */ |
85e6fe83 | 6469 | } |
79072805 | 6470 | |
de4bf5b3 | 6471 | if (kid->op_type != OP_MATCH || kid->op_flags & OPf_STACKED) { |
551405c4 | 6472 | OP * const sibl = kid->op_sibling; |
463ee0b2 | 6473 | kid->op_sibling = 0; |
131b3ad0 | 6474 | kid = pmruntime( newPMOP(OP_MATCH, OPf_SPECIAL), kid, 0); |
11343788 MB |
6475 | if (cLISTOPo->op_first == cLISTOPo->op_last) |
6476 | cLISTOPo->op_last = kid; | |
6477 | cLISTOPo->op_first = kid; | |
79072805 LW |
6478 | kid->op_sibling = sibl; |
6479 | } | |
6480 | ||
6481 | kid->op_type = OP_PUSHRE; | |
22c35a8c | 6482 | kid->op_ppaddr = PL_ppaddr[OP_PUSHRE]; |
79072805 | 6483 | scalar(kid); |
041457d9 | 6484 | if (((PMOP *)kid)->op_pmflags & PMf_GLOBAL && ckWARN(WARN_REGEXP)) { |
f34840d8 MJD |
6485 | Perl_warner(aTHX_ packWARN(WARN_REGEXP), |
6486 | "Use of /g modifier is meaningless in split"); | |
6487 | } | |
79072805 LW |
6488 | |
6489 | if (!kid->op_sibling) | |
54b9620d | 6490 | append_elem(OP_SPLIT, o, newDEFSVOP()); |
79072805 LW |
6491 | |
6492 | kid = kid->op_sibling; | |
6493 | scalar(kid); | |
6494 | ||
6495 | if (!kid->op_sibling) | |
11343788 | 6496 | append_elem(OP_SPLIT, o, newSVOP(OP_CONST, 0, newSViv(0))); |
79072805 LW |
6497 | |
6498 | kid = kid->op_sibling; | |
6499 | scalar(kid); | |
6500 | ||
6501 | if (kid->op_sibling) | |
53e06cf0 | 6502 | return too_many_arguments(o,OP_DESC(o)); |
79072805 | 6503 | |
11343788 | 6504 | return o; |
79072805 LW |
6505 | } |
6506 | ||
6507 | OP * | |
1c846c1f | 6508 | Perl_ck_join(pTHX_ OP *o) |
eb6e2d6f | 6509 | { |
551405c4 | 6510 | const OP * const kid = cLISTOPo->op_first->op_sibling; |
041457d9 DM |
6511 | if (kid && kid->op_type == OP_MATCH) { |
6512 | if (ckWARN(WARN_SYNTAX)) { | |
6867be6d AL |
6513 | const REGEXP *re = PM_GETRE(kPMOP); |
6514 | const char *pmstr = re ? re->precomp : "STRING"; | |
9014280d | 6515 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
eb6e2d6f GS |
6516 | "/%s/ should probably be written as \"%s\"", |
6517 | pmstr, pmstr); | |
6518 | } | |
6519 | } | |
6520 | return ck_fun(o); | |
6521 | } | |
6522 | ||
6523 | OP * | |
cea2e8a9 | 6524 | Perl_ck_subr(pTHX_ OP *o) |
79072805 | 6525 | { |
97aff369 | 6526 | dVAR; |
11343788 MB |
6527 | OP *prev = ((cUNOPo->op_first->op_sibling) |
6528 | ? cUNOPo : ((UNOP*)cUNOPo->op_first))->op_first; | |
6529 | OP *o2 = prev->op_sibling; | |
4633a7c4 | 6530 | OP *cvop; |
c445ea15 AL |
6531 | char *proto = NULL; |
6532 | CV *cv = NULL; | |
6533 | GV *namegv = NULL; | |
4633a7c4 LW |
6534 | int optional = 0; |
6535 | I32 arg = 0; | |
5b794e05 | 6536 | I32 contextclass = 0; |
c445ea15 | 6537 | char *e = NULL; |
0723351e | 6538 | bool delete_op = 0; |
4633a7c4 | 6539 | |
d3011074 | 6540 | o->op_private |= OPpENTERSUB_HASTARG; |
11343788 | 6541 | for (cvop = o2; cvop->op_sibling; cvop = cvop->op_sibling) ; |
4633a7c4 LW |
6542 | if (cvop->op_type == OP_RV2CV) { |
6543 | SVOP* tmpop; | |
11343788 | 6544 | o->op_private |= (cvop->op_private & OPpENTERSUB_AMPER); |
93c66552 | 6545 | op_null(cvop); /* disable rv2cv */ |
4633a7c4 | 6546 | tmpop = (SVOP*)((UNOP*)cvop)->op_first; |
76cd736e | 6547 | if (tmpop->op_type == OP_GV && !(o->op_private & OPpENTERSUB_AMPER)) { |
638eceb6 | 6548 | GV *gv = cGVOPx_gv(tmpop); |
350de78d | 6549 | cv = GvCVu(gv); |
76cd736e GS |
6550 | if (!cv) |
6551 | tmpop->op_private |= OPpEARLY_CV; | |
06492da6 SF |
6552 | else { |
6553 | if (SvPOK(cv)) { | |
6554 | namegv = CvANON(cv) ? gv : CvGV(cv); | |
8b6b16e7 | 6555 | proto = SvPV_nolen((SV*)cv); |
06492da6 SF |
6556 | } |
6557 | if (CvASSERTION(cv)) { | |
6558 | if (PL_hints & HINT_ASSERTING) { | |
6559 | if (PERLDB_ASSERTION && PL_curstash != PL_debstash) | |
6560 | o->op_private |= OPpENTERSUB_DB; | |
6561 | } | |
8fa7688f | 6562 | else { |
0723351e | 6563 | delete_op = 1; |
041457d9 | 6564 | if (!(PL_hints & HINT_ASSERTIONSSEEN) && ckWARN(WARN_ASSERTIONS)) { |
8fa7688f SF |
6565 | Perl_warner(aTHX_ packWARN(WARN_ASSERTIONS), |
6566 | "Impossible to activate assertion call"); | |
6567 | } | |
6568 | } | |
06492da6 | 6569 | } |
46fc3d4c | 6570 | } |
4633a7c4 LW |
6571 | } |
6572 | } | |
f5d5a27c | 6573 | else if (cvop->op_type == OP_METHOD || cvop->op_type == OP_METHOD_NAMED) { |
7a52d87a GS |
6574 | if (o2->op_type == OP_CONST) |
6575 | o2->op_private &= ~OPpCONST_STRICT; | |
58a40671 | 6576 | else if (o2->op_type == OP_LIST) { |
5f66b61c AL |
6577 | OP * const sib = ((UNOP*)o2)->op_first->op_sibling; |
6578 | if (sib && sib->op_type == OP_CONST) | |
6579 | sib->op_private &= ~OPpCONST_STRICT; | |
58a40671 | 6580 | } |
7a52d87a | 6581 | } |
3280af22 NIS |
6582 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
6583 | if (PERLDB_SUB && PL_curstash != PL_debstash) | |
11343788 MB |
6584 | o->op_private |= OPpENTERSUB_DB; |
6585 | while (o2 != cvop) { | |
4633a7c4 LW |
6586 | if (proto) { |
6587 | switch (*proto) { | |
6588 | case '\0': | |
5dc0d613 | 6589 | return too_many_arguments(o, gv_ename(namegv)); |
4633a7c4 LW |
6590 | case ';': |
6591 | optional = 1; | |
6592 | proto++; | |
6593 | continue; | |
6594 | case '$': | |
6595 | proto++; | |
6596 | arg++; | |
11343788 | 6597 | scalar(o2); |
4633a7c4 LW |
6598 | break; |
6599 | case '%': | |
6600 | case '@': | |
11343788 | 6601 | list(o2); |
4633a7c4 LW |
6602 | arg++; |
6603 | break; | |
6604 | case '&': | |
6605 | proto++; | |
6606 | arg++; | |
11343788 | 6607 | if (o2->op_type != OP_REFGEN && o2->op_type != OP_UNDEF) |
75fc29ea GS |
6608 | bad_type(arg, |
6609 | arg == 1 ? "block or sub {}" : "sub {}", | |
6610 | gv_ename(namegv), o2); | |
4633a7c4 LW |
6611 | break; |
6612 | case '*': | |
2ba6ecf4 | 6613 | /* '*' allows any scalar type, including bareword */ |
4633a7c4 LW |
6614 | proto++; |
6615 | arg++; | |
11343788 | 6616 | if (o2->op_type == OP_RV2GV) |
2ba6ecf4 | 6617 | goto wrapref; /* autoconvert GLOB -> GLOBref */ |
7a52d87a GS |
6618 | else if (o2->op_type == OP_CONST) |
6619 | o2->op_private &= ~OPpCONST_STRICT; | |
9675f7ac GS |
6620 | else if (o2->op_type == OP_ENTERSUB) { |
6621 | /* accidental subroutine, revert to bareword */ | |
6622 | OP *gvop = ((UNOP*)o2)->op_first; | |
6623 | if (gvop && gvop->op_type == OP_NULL) { | |
6624 | gvop = ((UNOP*)gvop)->op_first; | |
6625 | if (gvop) { | |
6626 | for (; gvop->op_sibling; gvop = gvop->op_sibling) | |
6627 | ; | |
6628 | if (gvop && | |
6629 | (gvop->op_private & OPpENTERSUB_NOPAREN) && | |
6630 | (gvop = ((UNOP*)gvop)->op_first) && | |
6631 | gvop->op_type == OP_GV) | |
6632 | { | |
551405c4 AL |
6633 | GV * const gv = cGVOPx_gv(gvop); |
6634 | OP * const sibling = o2->op_sibling; | |
396482e1 | 6635 | SV * const n = newSVpvs(""); |
9675f7ac | 6636 | op_free(o2); |
2a797ae2 | 6637 | gv_fullname4(n, gv, "", FALSE); |
2692f720 | 6638 | o2 = newSVOP(OP_CONST, 0, n); |
9675f7ac GS |
6639 | prev->op_sibling = o2; |
6640 | o2->op_sibling = sibling; | |
6641 | } | |
6642 | } | |
6643 | } | |
6644 | } | |
2ba6ecf4 GS |
6645 | scalar(o2); |
6646 | break; | |
5b794e05 JH |
6647 | case '[': case ']': |
6648 | goto oops; | |
6649 | break; | |
4633a7c4 LW |
6650 | case '\\': |
6651 | proto++; | |
6652 | arg++; | |
5b794e05 | 6653 | again: |
4633a7c4 | 6654 | switch (*proto++) { |
5b794e05 JH |
6655 | case '[': |
6656 | if (contextclass++ == 0) { | |
841d93c8 | 6657 | e = strchr(proto, ']'); |
5b794e05 JH |
6658 | if (!e || e == proto) |
6659 | goto oops; | |
6660 | } | |
6661 | else | |
6662 | goto oops; | |
6663 | goto again; | |
6664 | break; | |
6665 | case ']': | |
466bafcd | 6666 | if (contextclass) { |
0bd48802 | 6667 | /* XXX We shouldn't be modifying proto, so we can const proto */ |
6867be6d AL |
6668 | char *p = proto; |
6669 | const char s = *p; | |
466bafcd RGS |
6670 | contextclass = 0; |
6671 | *p = '\0'; | |
6672 | while (*--p != '['); | |
1eb1540c | 6673 | bad_type(arg, Perl_form(aTHX_ "one of %s", p), |
466bafcd RGS |
6674 | gv_ename(namegv), o2); |
6675 | *proto = s; | |
6676 | } else | |
5b794e05 JH |
6677 | goto oops; |
6678 | break; | |
4633a7c4 | 6679 | case '*': |
5b794e05 JH |
6680 | if (o2->op_type == OP_RV2GV) |
6681 | goto wrapref; | |
6682 | if (!contextclass) | |
6683 | bad_type(arg, "symbol", gv_ename(namegv), o2); | |
6684 | break; | |
4633a7c4 | 6685 | case '&': |
5b794e05 JH |
6686 | if (o2->op_type == OP_ENTERSUB) |
6687 | goto wrapref; | |
6688 | if (!contextclass) | |
6689 | bad_type(arg, "subroutine entry", gv_ename(namegv), o2); | |
6690 | break; | |
4633a7c4 | 6691 | case '$': |
5b794e05 JH |
6692 | if (o2->op_type == OP_RV2SV || |
6693 | o2->op_type == OP_PADSV || | |
6694 | o2->op_type == OP_HELEM || | |
6695 | o2->op_type == OP_AELEM || | |
6696 | o2->op_type == OP_THREADSV) | |
6697 | goto wrapref; | |
6698 | if (!contextclass) | |
5dc0d613 | 6699 | bad_type(arg, "scalar", gv_ename(namegv), o2); |
5b794e05 | 6700 | break; |
4633a7c4 | 6701 | case '@': |
5b794e05 JH |
6702 | if (o2->op_type == OP_RV2AV || |
6703 | o2->op_type == OP_PADAV) | |
6704 | goto wrapref; | |
6705 | if (!contextclass) | |
5dc0d613 | 6706 | bad_type(arg, "array", gv_ename(namegv), o2); |
5b794e05 | 6707 | break; |
4633a7c4 | 6708 | case '%': |
5b794e05 JH |
6709 | if (o2->op_type == OP_RV2HV || |
6710 | o2->op_type == OP_PADHV) | |
6711 | goto wrapref; | |
6712 | if (!contextclass) | |
6713 | bad_type(arg, "hash", gv_ename(namegv), o2); | |
6714 | break; | |
6715 | wrapref: | |
4633a7c4 | 6716 | { |
551405c4 AL |
6717 | OP* const kid = o2; |
6718 | OP* const sib = kid->op_sibling; | |
4633a7c4 | 6719 | kid->op_sibling = 0; |
6fa846a0 GS |
6720 | o2 = newUNOP(OP_REFGEN, 0, kid); |
6721 | o2->op_sibling = sib; | |
e858de61 | 6722 | prev->op_sibling = o2; |
4633a7c4 | 6723 | } |
841d93c8 | 6724 | if (contextclass && e) { |
5b794e05 JH |
6725 | proto = e + 1; |
6726 | contextclass = 0; | |
6727 | } | |
4633a7c4 LW |
6728 | break; |
6729 | default: goto oops; | |
6730 | } | |
5b794e05 JH |
6731 | if (contextclass) |
6732 | goto again; | |
4633a7c4 | 6733 | break; |
b1cb66bf | 6734 | case ' ': |
6735 | proto++; | |
6736 | continue; | |
4633a7c4 LW |
6737 | default: |
6738 | oops: | |
35c1215d NC |
6739 | Perl_croak(aTHX_ "Malformed prototype for %s: %"SVf, |
6740 | gv_ename(namegv), cv); | |
4633a7c4 LW |
6741 | } |
6742 | } | |
6743 | else | |
11343788 MB |
6744 | list(o2); |
6745 | mod(o2, OP_ENTERSUB); | |
6746 | prev = o2; | |
6747 | o2 = o2->op_sibling; | |
551405c4 | 6748 | } /* while */ |
fb73857a | 6749 | if (proto && !optional && |
6750 | (*proto && *proto != '@' && *proto != '%' && *proto != ';')) | |
5dc0d613 | 6751 | return too_few_arguments(o, gv_ename(namegv)); |
0723351e | 6752 | if(delete_op) { |
06492da6 SF |
6753 | op_free(o); |
6754 | o=newSVOP(OP_CONST, 0, newSViv(0)); | |
6755 | } | |
11343788 | 6756 | return o; |
79072805 LW |
6757 | } |
6758 | ||
6759 | OP * | |
cea2e8a9 | 6760 | Perl_ck_svconst(pTHX_ OP *o) |
8990e307 | 6761 | { |
11343788 MB |
6762 | SvREADONLY_on(cSVOPo->op_sv); |
6763 | return o; | |
8990e307 LW |
6764 | } |
6765 | ||
6766 | OP * | |
d4ac975e GA |
6767 | Perl_ck_chdir(pTHX_ OP *o) |
6768 | { | |
6769 | if (o->op_flags & OPf_KIDS) { | |
6770 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
6771 | ||
6772 | if (kid && kid->op_type == OP_CONST && | |
6773 | (kid->op_private & OPpCONST_BARE)) | |
6774 | { | |
6775 | o->op_flags |= OPf_SPECIAL; | |
6776 | kid->op_private &= ~OPpCONST_STRICT; | |
6777 | } | |
6778 | } | |
6779 | return ck_fun(o); | |
6780 | } | |
6781 | ||
6782 | OP * | |
cea2e8a9 | 6783 | Perl_ck_trunc(pTHX_ OP *o) |
79072805 | 6784 | { |
11343788 MB |
6785 | if (o->op_flags & OPf_KIDS) { |
6786 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 | 6787 | |
a0d0e21e LW |
6788 | if (kid->op_type == OP_NULL) |
6789 | kid = (SVOP*)kid->op_sibling; | |
bb53490d GS |
6790 | if (kid && kid->op_type == OP_CONST && |
6791 | (kid->op_private & OPpCONST_BARE)) | |
6792 | { | |
11343788 | 6793 | o->op_flags |= OPf_SPECIAL; |
bb53490d GS |
6794 | kid->op_private &= ~OPpCONST_STRICT; |
6795 | } | |
79072805 | 6796 | } |
11343788 | 6797 | return ck_fun(o); |
79072805 LW |
6798 | } |
6799 | ||
35fba0d9 | 6800 | OP * |
bab9c0ac RGS |
6801 | Perl_ck_unpack(pTHX_ OP *o) |
6802 | { | |
6803 | OP *kid = cLISTOPo->op_first; | |
6804 | if (kid->op_sibling) { | |
6805 | kid = kid->op_sibling; | |
6806 | if (!kid->op_sibling) | |
6807 | kid->op_sibling = newDEFSVOP(); | |
6808 | } | |
6809 | return ck_fun(o); | |
6810 | } | |
6811 | ||
6812 | OP * | |
35fba0d9 RG |
6813 | Perl_ck_substr(pTHX_ OP *o) |
6814 | { | |
6815 | o = ck_fun(o); | |
6816 | if ((o->op_flags & OPf_KIDS) && o->op_private == 4) { | |
6817 | OP *kid = cLISTOPo->op_first; | |
6818 | ||
6819 | if (kid->op_type == OP_NULL) | |
6820 | kid = kid->op_sibling; | |
6821 | if (kid) | |
6822 | kid->op_flags |= OPf_MOD; | |
6823 | ||
6824 | } | |
6825 | return o; | |
6826 | } | |
6827 | ||
61b743bb DM |
6828 | /* A peephole optimizer. We visit the ops in the order they're to execute. |
6829 | * See the comments at the top of this file for more details about when | |
6830 | * peep() is called */ | |
463ee0b2 | 6831 | |
79072805 | 6832 | void |
864dbfa3 | 6833 | Perl_peep(pTHX_ register OP *o) |
79072805 | 6834 | { |
27da23d5 | 6835 | dVAR; |
c445ea15 | 6836 | register OP* oldop = NULL; |
2d8e6c8d | 6837 | |
2814eb74 | 6838 | if (!o || o->op_opt) |
79072805 | 6839 | return; |
a0d0e21e | 6840 | ENTER; |
462e5cf6 | 6841 | SAVEOP(); |
7766f137 | 6842 | SAVEVPTR(PL_curcop); |
a0d0e21e | 6843 | for (; o; o = o->op_next) { |
2814eb74 | 6844 | if (o->op_opt) |
a0d0e21e | 6845 | break; |
533c011a | 6846 | PL_op = o; |
a0d0e21e | 6847 | switch (o->op_type) { |
acb36ea4 | 6848 | case OP_SETSTATE: |
a0d0e21e LW |
6849 | case OP_NEXTSTATE: |
6850 | case OP_DBSTATE: | |
3280af22 | 6851 | PL_curcop = ((COP*)o); /* for warnings */ |
2814eb74 | 6852 | o->op_opt = 1; |
a0d0e21e LW |
6853 | break; |
6854 | ||
a0d0e21e | 6855 | case OP_CONST: |
7a52d87a GS |
6856 | if (cSVOPo->op_private & OPpCONST_STRICT) |
6857 | no_bareword_allowed(o); | |
7766f137 | 6858 | #ifdef USE_ITHREADS |
3848b962 | 6859 | case OP_METHOD_NAMED: |
7766f137 GS |
6860 | /* Relocate sv to the pad for thread safety. |
6861 | * Despite being a "constant", the SV is written to, | |
6862 | * for reference counts, sv_upgrade() etc. */ | |
6863 | if (cSVOP->op_sv) { | |
6867be6d | 6864 | const PADOFFSET ix = pad_alloc(OP_CONST, SVs_PADTMP); |
330e22d5 | 6865 | if (o->op_type == OP_CONST && SvPADTMP(cSVOPo->op_sv)) { |
6a7129a1 | 6866 | /* If op_sv is already a PADTMP then it is being used by |
9a049f1c | 6867 | * some pad, so make a copy. */ |
dd2155a4 DM |
6868 | sv_setsv(PAD_SVl(ix),cSVOPo->op_sv); |
6869 | SvREADONLY_on(PAD_SVl(ix)); | |
6a7129a1 GS |
6870 | SvREFCNT_dec(cSVOPo->op_sv); |
6871 | } | |
052ca17e NC |
6872 | else if (o->op_type == OP_CONST |
6873 | && cSVOPo->op_sv == &PL_sv_undef) { | |
6874 | /* PL_sv_undef is hack - it's unsafe to store it in the | |
6875 | AV that is the pad, because av_fetch treats values of | |
6876 | PL_sv_undef as a "free" AV entry and will merrily | |
6877 | replace them with a new SV, causing pad_alloc to think | |
6878 | that this pad slot is free. (When, clearly, it is not) | |
6879 | */ | |
6880 | SvOK_off(PAD_SVl(ix)); | |
6881 | SvPADTMP_on(PAD_SVl(ix)); | |
6882 | SvREADONLY_on(PAD_SVl(ix)); | |
6883 | } | |
6a7129a1 | 6884 | else { |
dd2155a4 | 6885 | SvREFCNT_dec(PAD_SVl(ix)); |
6a7129a1 | 6886 | SvPADTMP_on(cSVOPo->op_sv); |
dd2155a4 | 6887 | PAD_SETSV(ix, cSVOPo->op_sv); |
9a049f1c | 6888 | /* XXX I don't know how this isn't readonly already. */ |
dd2155a4 | 6889 | SvREADONLY_on(PAD_SVl(ix)); |
6a7129a1 | 6890 | } |
a0714e2c | 6891 | cSVOPo->op_sv = NULL; |
7766f137 GS |
6892 | o->op_targ = ix; |
6893 | } | |
6894 | #endif | |
2814eb74 | 6895 | o->op_opt = 1; |
07447971 GS |
6896 | break; |
6897 | ||
df91b2c5 AE |
6898 | case OP_CONCAT: |
6899 | if (o->op_next && o->op_next->op_type == OP_STRINGIFY) { | |
6900 | if (o->op_next->op_private & OPpTARGET_MY) { | |
6901 | if (o->op_flags & OPf_STACKED) /* chained concats */ | |
6902 | goto ignore_optimization; | |
6903 | else { | |
6904 | /* assert(PL_opargs[o->op_type] & OA_TARGLEX); */ | |
6905 | o->op_targ = o->op_next->op_targ; | |
6906 | o->op_next->op_targ = 0; | |
6907 | o->op_private |= OPpTARGET_MY; | |
6908 | } | |
6909 | } | |
6910 | op_null(o->op_next); | |
6911 | } | |
6912 | ignore_optimization: | |
2814eb74 | 6913 | o->op_opt = 1; |
df91b2c5 | 6914 | break; |
8990e307 | 6915 | case OP_STUB: |
54310121 | 6916 | if ((o->op_flags & OPf_WANT) != OPf_WANT_LIST) { |
2814eb74 | 6917 | o->op_opt = 1; |
54310121 | 6918 | break; /* Scalar stub must produce undef. List stub is noop */ |
8990e307 | 6919 | } |
748a9306 | 6920 | goto nothin; |
79072805 | 6921 | case OP_NULL: |
acb36ea4 GS |
6922 | if (o->op_targ == OP_NEXTSTATE |
6923 | || o->op_targ == OP_DBSTATE | |
6924 | || o->op_targ == OP_SETSTATE) | |
6925 | { | |
3280af22 | 6926 | PL_curcop = ((COP*)o); |
acb36ea4 | 6927 | } |
dad75012 AMS |
6928 | /* XXX: We avoid setting op_seq here to prevent later calls |
6929 | to peep() from mistakenly concluding that optimisation | |
6930 | has already occurred. This doesn't fix the real problem, | |
6931 | though (See 20010220.007). AMS 20010719 */ | |
2814eb74 | 6932 | /* op_seq functionality is now replaced by op_opt */ |
dad75012 AMS |
6933 | if (oldop && o->op_next) { |
6934 | oldop->op_next = o->op_next; | |
6935 | continue; | |
6936 | } | |
6937 | break; | |
79072805 | 6938 | case OP_SCALAR: |
93a17b20 | 6939 | case OP_LINESEQ: |
463ee0b2 | 6940 | case OP_SCOPE: |
748a9306 | 6941 | nothin: |
a0d0e21e LW |
6942 | if (oldop && o->op_next) { |
6943 | oldop->op_next = o->op_next; | |
79072805 LW |
6944 | continue; |
6945 | } | |
2814eb74 | 6946 | o->op_opt = 1; |
79072805 LW |
6947 | break; |
6948 | ||
6a077020 | 6949 | case OP_PADAV: |
79072805 | 6950 | case OP_GV: |
6a077020 | 6951 | if (o->op_type == OP_PADAV || o->op_next->op_type == OP_RV2AV) { |
0bd48802 | 6952 | OP* const pop = (o->op_type == OP_PADAV) ? |
6a077020 | 6953 | o->op_next : o->op_next->op_next; |
a0d0e21e | 6954 | IV i; |
f9dc862f | 6955 | if (pop && pop->op_type == OP_CONST && |
af5acbb4 | 6956 | ((PL_op = pop->op_next)) && |
8990e307 | 6957 | pop->op_next->op_type == OP_AELEM && |
a0d0e21e | 6958 | !(pop->op_next->op_private & |
78f9721b | 6959 | (OPpLVAL_INTRO|OPpLVAL_DEFER|OPpDEREF|OPpMAYBE_LVSUB)) && |
b0840a2a | 6960 | (i = SvIV(((SVOP*)pop)->op_sv) - PL_curcop->cop_arybase) |
a0d0e21e | 6961 | <= 255 && |
8990e307 LW |
6962 | i >= 0) |
6963 | { | |
350de78d | 6964 | GV *gv; |
af5acbb4 DM |
6965 | if (cSVOPx(pop)->op_private & OPpCONST_STRICT) |
6966 | no_bareword_allowed(pop); | |
6a077020 DM |
6967 | if (o->op_type == OP_GV) |
6968 | op_null(o->op_next); | |
93c66552 DM |
6969 | op_null(pop->op_next); |
6970 | op_null(pop); | |
a0d0e21e LW |
6971 | o->op_flags |= pop->op_next->op_flags & OPf_MOD; |
6972 | o->op_next = pop->op_next->op_next; | |
22c35a8c | 6973 | o->op_ppaddr = PL_ppaddr[OP_AELEMFAST]; |
a0d0e21e | 6974 | o->op_private = (U8)i; |
6a077020 DM |
6975 | if (o->op_type == OP_GV) { |
6976 | gv = cGVOPo_gv; | |
6977 | GvAVn(gv); | |
6978 | } | |
6979 | else | |
6980 | o->op_flags |= OPf_SPECIAL; | |
6981 | o->op_type = OP_AELEMFAST; | |
6982 | } | |
6983 | o->op_opt = 1; | |
6984 | break; | |
6985 | } | |
6986 | ||
6987 | if (o->op_next->op_type == OP_RV2SV) { | |
6988 | if (!(o->op_next->op_private & OPpDEREF)) { | |
6989 | op_null(o->op_next); | |
6990 | o->op_private |= o->op_next->op_private & (OPpLVAL_INTRO | |
6991 | | OPpOUR_INTRO); | |
6992 | o->op_next = o->op_next->op_next; | |
6993 | o->op_type = OP_GVSV; | |
6994 | o->op_ppaddr = PL_ppaddr[OP_GVSV]; | |
8990e307 | 6995 | } |
79072805 | 6996 | } |
e476b1b5 | 6997 | else if ((o->op_private & OPpEARLY_CV) && ckWARN(WARN_PROTOTYPE)) { |
551405c4 | 6998 | GV * const gv = cGVOPo_gv; |
b15aece3 | 6999 | if (SvTYPE(gv) == SVt_PVGV && GvCV(gv) && SvPVX_const(GvCV(gv))) { |
76cd736e | 7000 | /* XXX could check prototype here instead of just carping */ |
551405c4 | 7001 | SV * const sv = sv_newmortal(); |
bd61b366 | 7002 | gv_efullname3(sv, gv, NULL); |
9014280d | 7003 | Perl_warner(aTHX_ packWARN(WARN_PROTOTYPE), |
35c1215d NC |
7004 | "%"SVf"() called too early to check prototype", |
7005 | sv); | |
76cd736e GS |
7006 | } |
7007 | } | |
89de2904 AMS |
7008 | else if (o->op_next->op_type == OP_READLINE |
7009 | && o->op_next->op_next->op_type == OP_CONCAT | |
7010 | && (o->op_next->op_next->op_flags & OPf_STACKED)) | |
7011 | { | |
d2c45030 AMS |
7012 | /* Turn "$a .= <FH>" into an OP_RCATLINE. AMS 20010917 */ |
7013 | o->op_type = OP_RCATLINE; | |
7014 | o->op_flags |= OPf_STACKED; | |
7015 | o->op_ppaddr = PL_ppaddr[OP_RCATLINE]; | |
89de2904 | 7016 | op_null(o->op_next->op_next); |
d2c45030 | 7017 | op_null(o->op_next); |
89de2904 | 7018 | } |
76cd736e | 7019 | |
2814eb74 | 7020 | o->op_opt = 1; |
79072805 LW |
7021 | break; |
7022 | ||
a0d0e21e | 7023 | case OP_MAPWHILE: |
79072805 LW |
7024 | case OP_GREPWHILE: |
7025 | case OP_AND: | |
7026 | case OP_OR: | |
c963b151 | 7027 | case OP_DOR: |
2c2d71f5 JH |
7028 | case OP_ANDASSIGN: |
7029 | case OP_ORASSIGN: | |
c963b151 | 7030 | case OP_DORASSIGN: |
1a67a97c SM |
7031 | case OP_COND_EXPR: |
7032 | case OP_RANGE: | |
2814eb74 | 7033 | o->op_opt = 1; |
fd4d1407 IZ |
7034 | while (cLOGOP->op_other->op_type == OP_NULL) |
7035 | cLOGOP->op_other = cLOGOP->op_other->op_next; | |
a2efc822 | 7036 | peep(cLOGOP->op_other); /* Recursive calls are not replaced by fptr calls */ |
79072805 LW |
7037 | break; |
7038 | ||
79072805 | 7039 | case OP_ENTERLOOP: |
9c2ca71a | 7040 | case OP_ENTERITER: |
2814eb74 | 7041 | o->op_opt = 1; |
58cccf98 SM |
7042 | while (cLOOP->op_redoop->op_type == OP_NULL) |
7043 | cLOOP->op_redoop = cLOOP->op_redoop->op_next; | |
79072805 | 7044 | peep(cLOOP->op_redoop); |
58cccf98 SM |
7045 | while (cLOOP->op_nextop->op_type == OP_NULL) |
7046 | cLOOP->op_nextop = cLOOP->op_nextop->op_next; | |
79072805 | 7047 | peep(cLOOP->op_nextop); |
58cccf98 SM |
7048 | while (cLOOP->op_lastop->op_type == OP_NULL) |
7049 | cLOOP->op_lastop = cLOOP->op_lastop->op_next; | |
79072805 LW |
7050 | peep(cLOOP->op_lastop); |
7051 | break; | |
7052 | ||
8782bef2 | 7053 | case OP_QR: |
79072805 LW |
7054 | case OP_MATCH: |
7055 | case OP_SUBST: | |
2814eb74 | 7056 | o->op_opt = 1; |
9041c2e3 | 7057 | while (cPMOP->op_pmreplstart && |
58cccf98 SM |
7058 | cPMOP->op_pmreplstart->op_type == OP_NULL) |
7059 | cPMOP->op_pmreplstart = cPMOP->op_pmreplstart->op_next; | |
a0d0e21e | 7060 | peep(cPMOP->op_pmreplstart); |
79072805 LW |
7061 | break; |
7062 | ||
a0d0e21e | 7063 | case OP_EXEC: |
2814eb74 | 7064 | o->op_opt = 1; |
041457d9 DM |
7065 | if (o->op_next && o->op_next->op_type == OP_NEXTSTATE |
7066 | && ckWARN(WARN_SYNTAX)) | |
7067 | { | |
a0d0e21e | 7068 | if (o->op_next->op_sibling && |
20408e3c GS |
7069 | o->op_next->op_sibling->op_type != OP_EXIT && |
7070 | o->op_next->op_sibling->op_type != OP_WARN && | |
a0d0e21e | 7071 | o->op_next->op_sibling->op_type != OP_DIE) { |
6867be6d | 7072 | const line_t oldline = CopLINE(PL_curcop); |
a0d0e21e | 7073 | |
57843af0 | 7074 | CopLINE_set(PL_curcop, CopLINE((COP*)o->op_next)); |
9014280d | 7075 | Perl_warner(aTHX_ packWARN(WARN_EXEC), |
eeb6a2c9 | 7076 | "Statement unlikely to be reached"); |
9014280d | 7077 | Perl_warner(aTHX_ packWARN(WARN_EXEC), |
cc507455 | 7078 | "\t(Maybe you meant system() when you said exec()?)\n"); |
57843af0 | 7079 | CopLINE_set(PL_curcop, oldline); |
a0d0e21e LW |
7080 | } |
7081 | } | |
7082 | break; | |
b2ffa427 | 7083 | |
c750a3ec | 7084 | case OP_HELEM: { |
e75d1f10 | 7085 | UNOP *rop; |
6d822dc4 | 7086 | SV *lexname; |
e75d1f10 | 7087 | GV **fields; |
6d822dc4 | 7088 | SV **svp, *sv; |
d5263905 | 7089 | const char *key = NULL; |
c750a3ec | 7090 | STRLEN keylen; |
b2ffa427 | 7091 | |
2814eb74 | 7092 | o->op_opt = 1; |
1c846c1f NIS |
7093 | |
7094 | if (((BINOP*)o)->op_last->op_type != OP_CONST) | |
c750a3ec | 7095 | break; |
1c846c1f NIS |
7096 | |
7097 | /* Make the CONST have a shared SV */ | |
7098 | svp = cSVOPx_svp(((BINOP*)o)->op_last); | |
3049cdab | 7099 | if ((!SvFAKE(sv = *svp) || !SvREADONLY(sv)) && !IS_PADCONST(sv)) { |
d5263905 | 7100 | key = SvPV_const(sv, keylen); |
25716404 GS |
7101 | lexname = newSVpvn_share(key, |
7102 | SvUTF8(sv) ? -(I32)keylen : keylen, | |
7103 | 0); | |
1c846c1f NIS |
7104 | SvREFCNT_dec(sv); |
7105 | *svp = lexname; | |
7106 | } | |
e75d1f10 RD |
7107 | |
7108 | if ((o->op_private & (OPpLVAL_INTRO))) | |
7109 | break; | |
7110 | ||
7111 | rop = (UNOP*)((BINOP*)o)->op_first; | |
7112 | if (rop->op_type != OP_RV2HV || rop->op_first->op_type != OP_PADSV) | |
7113 | break; | |
7114 | lexname = *av_fetch(PL_comppad_name, rop->op_first->op_targ, TRUE); | |
7115 | if (!(SvFLAGS(lexname) & SVpad_TYPED)) | |
7116 | break; | |
a4fc7abc | 7117 | fields = (GV**)hv_fetchs(SvSTASH(lexname), "FIELDS", FALSE); |
e75d1f10 RD |
7118 | if (!fields || !GvHV(*fields)) |
7119 | break; | |
93524f2b | 7120 | key = SvPV_const(*svp, keylen); |
e75d1f10 RD |
7121 | if (!hv_fetch(GvHV(*fields), key, |
7122 | SvUTF8(*svp) ? -(I32)keylen : keylen, FALSE)) | |
7123 | { | |
7124 | Perl_croak(aTHX_ "No such class field \"%s\" " | |
7125 | "in variable %s of type %s", | |
93524f2b | 7126 | key, SvPV_nolen_const(lexname), HvNAME_get(SvSTASH(lexname))); |
e75d1f10 RD |
7127 | } |
7128 | ||
6d822dc4 MS |
7129 | break; |
7130 | } | |
c750a3ec | 7131 | |
e75d1f10 RD |
7132 | case OP_HSLICE: { |
7133 | UNOP *rop; | |
7134 | SV *lexname; | |
7135 | GV **fields; | |
7136 | SV **svp; | |
93524f2b | 7137 | const char *key; |
e75d1f10 RD |
7138 | STRLEN keylen; |
7139 | SVOP *first_key_op, *key_op; | |
7140 | ||
7141 | if ((o->op_private & (OPpLVAL_INTRO)) | |
7142 | /* I bet there's always a pushmark... */ | |
7143 | || ((LISTOP*)o)->op_first->op_sibling->op_type != OP_LIST) | |
7144 | /* hmmm, no optimization if list contains only one key. */ | |
7145 | break; | |
7146 | rop = (UNOP*)((LISTOP*)o)->op_last; | |
7147 | if (rop->op_type != OP_RV2HV) | |
7148 | break; | |
7149 | if (rop->op_first->op_type == OP_PADSV) | |
7150 | /* @$hash{qw(keys here)} */ | |
7151 | rop = (UNOP*)rop->op_first; | |
7152 | else { | |
7153 | /* @{$hash}{qw(keys here)} */ | |
7154 | if (rop->op_first->op_type == OP_SCOPE | |
7155 | && cLISTOPx(rop->op_first)->op_last->op_type == OP_PADSV) | |
7156 | { | |
7157 | rop = (UNOP*)cLISTOPx(rop->op_first)->op_last; | |
7158 | } | |
7159 | else | |
7160 | break; | |
7161 | } | |
7162 | ||
7163 | lexname = *av_fetch(PL_comppad_name, rop->op_targ, TRUE); | |
7164 | if (!(SvFLAGS(lexname) & SVpad_TYPED)) | |
7165 | break; | |
a4fc7abc | 7166 | fields = (GV**)hv_fetchs(SvSTASH(lexname), "FIELDS", FALSE); |
e75d1f10 RD |
7167 | if (!fields || !GvHV(*fields)) |
7168 | break; | |
7169 | /* Again guessing that the pushmark can be jumped over.... */ | |
7170 | first_key_op = (SVOP*)((LISTOP*)((LISTOP*)o)->op_first->op_sibling) | |
7171 | ->op_first->op_sibling; | |
7172 | for (key_op = first_key_op; key_op; | |
7173 | key_op = (SVOP*)key_op->op_sibling) { | |
7174 | if (key_op->op_type != OP_CONST) | |
7175 | continue; | |
7176 | svp = cSVOPx_svp(key_op); | |
93524f2b | 7177 | key = SvPV_const(*svp, keylen); |
e75d1f10 RD |
7178 | if (!hv_fetch(GvHV(*fields), key, |
7179 | SvUTF8(*svp) ? -(I32)keylen : keylen, FALSE)) | |
7180 | { | |
7181 | Perl_croak(aTHX_ "No such class field \"%s\" " | |
7182 | "in variable %s of type %s", | |
bfcb3514 | 7183 | key, SvPV_nolen(lexname), HvNAME_get(SvSTASH(lexname))); |
e75d1f10 RD |
7184 | } |
7185 | } | |
7186 | break; | |
7187 | } | |
7188 | ||
fe1bc4cf | 7189 | case OP_SORT: { |
fe1bc4cf | 7190 | /* will point to RV2AV or PADAV op on LHS/RHS of assign */ |
551405c4 | 7191 | OP *oleft; |
fe1bc4cf DM |
7192 | OP *o2; |
7193 | ||
fe1bc4cf | 7194 | /* check that RHS of sort is a single plain array */ |
551405c4 | 7195 | OP *oright = cUNOPo->op_first; |
fe1bc4cf DM |
7196 | if (!oright || oright->op_type != OP_PUSHMARK) |
7197 | break; | |
471178c0 NC |
7198 | |
7199 | /* reverse sort ... can be optimised. */ | |
7200 | if (!cUNOPo->op_sibling) { | |
7201 | /* Nothing follows us on the list. */ | |
551405c4 | 7202 | OP * const reverse = o->op_next; |
471178c0 NC |
7203 | |
7204 | if (reverse->op_type == OP_REVERSE && | |
7205 | (reverse->op_flags & OPf_WANT) == OPf_WANT_LIST) { | |
551405c4 | 7206 | OP * const pushmark = cUNOPx(reverse)->op_first; |
471178c0 NC |
7207 | if (pushmark && (pushmark->op_type == OP_PUSHMARK) |
7208 | && (cUNOPx(pushmark)->op_sibling == o)) { | |
7209 | /* reverse -> pushmark -> sort */ | |
7210 | o->op_private |= OPpSORT_REVERSE; | |
7211 | op_null(reverse); | |
7212 | pushmark->op_next = oright->op_next; | |
7213 | op_null(oright); | |
7214 | } | |
7215 | } | |
7216 | } | |
7217 | ||
7218 | /* make @a = sort @a act in-place */ | |
7219 | ||
7220 | o->op_opt = 1; | |
7221 | ||
fe1bc4cf DM |
7222 | oright = cUNOPx(oright)->op_sibling; |
7223 | if (!oright) | |
7224 | break; | |
7225 | if (oright->op_type == OP_NULL) { /* skip sort block/sub */ | |
7226 | oright = cUNOPx(oright)->op_sibling; | |
7227 | } | |
7228 | ||
7229 | if (!oright || | |
7230 | (oright->op_type != OP_RV2AV && oright->op_type != OP_PADAV) | |
7231 | || oright->op_next != o | |
7232 | || (oright->op_private & OPpLVAL_INTRO) | |
7233 | ) | |
7234 | break; | |
7235 | ||
7236 | /* o2 follows the chain of op_nexts through the LHS of the | |
7237 | * assign (if any) to the aassign op itself */ | |
7238 | o2 = o->op_next; | |
7239 | if (!o2 || o2->op_type != OP_NULL) | |
7240 | break; | |
7241 | o2 = o2->op_next; | |
7242 | if (!o2 || o2->op_type != OP_PUSHMARK) | |
7243 | break; | |
7244 | o2 = o2->op_next; | |
7245 | if (o2 && o2->op_type == OP_GV) | |
7246 | o2 = o2->op_next; | |
7247 | if (!o2 | |
7248 | || (o2->op_type != OP_PADAV && o2->op_type != OP_RV2AV) | |
7249 | || (o2->op_private & OPpLVAL_INTRO) | |
7250 | ) | |
7251 | break; | |
7252 | oleft = o2; | |
7253 | o2 = o2->op_next; | |
7254 | if (!o2 || o2->op_type != OP_NULL) | |
7255 | break; | |
7256 | o2 = o2->op_next; | |
7257 | if (!o2 || o2->op_type != OP_AASSIGN | |
7258 | || (o2->op_flags & OPf_WANT) != OPf_WANT_VOID) | |
7259 | break; | |
7260 | ||
db7511db DM |
7261 | /* check that the sort is the first arg on RHS of assign */ |
7262 | ||
7263 | o2 = cUNOPx(o2)->op_first; | |
7264 | if (!o2 || o2->op_type != OP_NULL) | |
7265 | break; | |
7266 | o2 = cUNOPx(o2)->op_first; | |
7267 | if (!o2 || o2->op_type != OP_PUSHMARK) | |
7268 | break; | |
7269 | if (o2->op_sibling != o) | |
7270 | break; | |
7271 | ||
fe1bc4cf DM |
7272 | /* check the array is the same on both sides */ |
7273 | if (oleft->op_type == OP_RV2AV) { | |
7274 | if (oright->op_type != OP_RV2AV | |
7275 | || !cUNOPx(oright)->op_first | |
7276 | || cUNOPx(oright)->op_first->op_type != OP_GV | |
7277 | || cGVOPx_gv(cUNOPx(oleft)->op_first) != | |
7278 | cGVOPx_gv(cUNOPx(oright)->op_first) | |
7279 | ) | |
7280 | break; | |
7281 | } | |
7282 | else if (oright->op_type != OP_PADAV | |
7283 | || oright->op_targ != oleft->op_targ | |
7284 | ) | |
7285 | break; | |
7286 | ||
7287 | /* transfer MODishness etc from LHS arg to RHS arg */ | |
7288 | oright->op_flags = oleft->op_flags; | |
7289 | o->op_private |= OPpSORT_INPLACE; | |
7290 | ||
7291 | /* excise push->gv->rv2av->null->aassign */ | |
7292 | o2 = o->op_next->op_next; | |
7293 | op_null(o2); /* PUSHMARK */ | |
7294 | o2 = o2->op_next; | |
7295 | if (o2->op_type == OP_GV) { | |
7296 | op_null(o2); /* GV */ | |
7297 | o2 = o2->op_next; | |
7298 | } | |
7299 | op_null(o2); /* RV2AV or PADAV */ | |
7300 | o2 = o2->op_next->op_next; | |
7301 | op_null(o2); /* AASSIGN */ | |
7302 | ||
7303 | o->op_next = o2->op_next; | |
7304 | ||
7305 | break; | |
7306 | } | |
ef3e5ea9 NC |
7307 | |
7308 | case OP_REVERSE: { | |
e682d7b7 | 7309 | OP *ourmark, *theirmark, *ourlast, *iter, *expushmark, *rv2av; |
ce335f37 | 7310 | OP *gvop = NULL; |
ef3e5ea9 NC |
7311 | LISTOP *enter, *exlist; |
7312 | o->op_opt = 1; | |
7313 | ||
7314 | enter = (LISTOP *) o->op_next; | |
7315 | if (!enter) | |
7316 | break; | |
7317 | if (enter->op_type == OP_NULL) { | |
7318 | enter = (LISTOP *) enter->op_next; | |
7319 | if (!enter) | |
7320 | break; | |
7321 | } | |
d46f46af NC |
7322 | /* for $a (...) will have OP_GV then OP_RV2GV here. |
7323 | for (...) just has an OP_GV. */ | |
ce335f37 NC |
7324 | if (enter->op_type == OP_GV) { |
7325 | gvop = (OP *) enter; | |
7326 | enter = (LISTOP *) enter->op_next; | |
7327 | if (!enter) | |
7328 | break; | |
d46f46af NC |
7329 | if (enter->op_type == OP_RV2GV) { |
7330 | enter = (LISTOP *) enter->op_next; | |
7331 | if (!enter) | |
ce335f37 | 7332 | break; |
d46f46af | 7333 | } |
ce335f37 NC |
7334 | } |
7335 | ||
ef3e5ea9 NC |
7336 | if (enter->op_type != OP_ENTERITER) |
7337 | break; | |
7338 | ||
7339 | iter = enter->op_next; | |
7340 | if (!iter || iter->op_type != OP_ITER) | |
7341 | break; | |
7342 | ||
ce335f37 NC |
7343 | expushmark = enter->op_first; |
7344 | if (!expushmark || expushmark->op_type != OP_NULL | |
7345 | || expushmark->op_targ != OP_PUSHMARK) | |
7346 | break; | |
7347 | ||
7348 | exlist = (LISTOP *) expushmark->op_sibling; | |
ef3e5ea9 NC |
7349 | if (!exlist || exlist->op_type != OP_NULL |
7350 | || exlist->op_targ != OP_LIST) | |
7351 | break; | |
7352 | ||
7353 | if (exlist->op_last != o) { | |
7354 | /* Mmm. Was expecting to point back to this op. */ | |
7355 | break; | |
7356 | } | |
7357 | theirmark = exlist->op_first; | |
7358 | if (!theirmark || theirmark->op_type != OP_PUSHMARK) | |
7359 | break; | |
7360 | ||
c491ecac | 7361 | if (theirmark->op_sibling != o) { |
ef3e5ea9 NC |
7362 | /* There's something between the mark and the reverse, eg |
7363 | for (1, reverse (...)) | |
7364 | so no go. */ | |
7365 | break; | |
7366 | } | |
7367 | ||
c491ecac NC |
7368 | ourmark = ((LISTOP *)o)->op_first; |
7369 | if (!ourmark || ourmark->op_type != OP_PUSHMARK) | |
7370 | break; | |
7371 | ||
ef3e5ea9 NC |
7372 | ourlast = ((LISTOP *)o)->op_last; |
7373 | if (!ourlast || ourlast->op_next != o) | |
7374 | break; | |
7375 | ||
e682d7b7 NC |
7376 | rv2av = ourmark->op_sibling; |
7377 | if (rv2av && rv2av->op_type == OP_RV2AV && rv2av->op_sibling == 0 | |
7378 | && rv2av->op_flags == (OPf_WANT_LIST | OPf_KIDS) | |
7379 | && enter->op_flags == (OPf_WANT_LIST | OPf_KIDS)) { | |
7380 | /* We're just reversing a single array. */ | |
7381 | rv2av->op_flags = OPf_WANT_SCALAR | OPf_KIDS | OPf_REF; | |
7382 | enter->op_flags |= OPf_STACKED; | |
7383 | } | |
7384 | ||
ef3e5ea9 NC |
7385 | /* We don't have control over who points to theirmark, so sacrifice |
7386 | ours. */ | |
7387 | theirmark->op_next = ourmark->op_next; | |
7388 | theirmark->op_flags = ourmark->op_flags; | |
ce335f37 | 7389 | ourlast->op_next = gvop ? gvop : (OP *) enter; |
ef3e5ea9 NC |
7390 | op_null(ourmark); |
7391 | op_null(o); | |
7392 | enter->op_private |= OPpITER_REVERSED; | |
7393 | iter->op_private |= OPpITER_REVERSED; | |
7394 | ||
7395 | break; | |
7396 | } | |
e26df76a NC |
7397 | |
7398 | case OP_SASSIGN: { | |
7399 | OP *rv2gv; | |
7400 | UNOP *refgen, *rv2cv; | |
7401 | LISTOP *exlist; | |
7402 | ||
7403 | /* I do not understand this, but if o->op_opt isn't set to 1, | |
7404 | various tests in ext/B/t/bytecode.t fail with no readily | |
7405 | apparent cause. */ | |
7406 | ||
7407 | o->op_opt = 1; | |
7408 | ||
de3370bc NC |
7409 | |
7410 | if ((o->op_flags && OPf_WANT) != OPf_WANT_VOID) | |
7411 | break; | |
7412 | ||
e26df76a NC |
7413 | if ((o->op_private & ~OPpASSIGN_BACKWARDS) != 2) |
7414 | break; | |
7415 | ||
7416 | rv2gv = ((BINOP *)o)->op_last; | |
7417 | if (!rv2gv || rv2gv->op_type != OP_RV2GV) | |
7418 | break; | |
7419 | ||
7420 | refgen = (UNOP *)((BINOP *)o)->op_first; | |
7421 | ||
7422 | if (!refgen || refgen->op_type != OP_REFGEN) | |
7423 | break; | |
7424 | ||
7425 | exlist = (LISTOP *)refgen->op_first; | |
7426 | if (!exlist || exlist->op_type != OP_NULL | |
7427 | || exlist->op_targ != OP_LIST) | |
7428 | break; | |
7429 | ||
7430 | if (exlist->op_first->op_type != OP_PUSHMARK) | |
7431 | break; | |
7432 | ||
7433 | rv2cv = (UNOP*)exlist->op_last; | |
7434 | ||
7435 | if (rv2cv->op_type != OP_RV2CV) | |
7436 | break; | |
7437 | ||
7438 | assert ((rv2gv->op_private & OPpDONT_INIT_GV) == 0); | |
7439 | assert ((o->op_private & OPpASSIGN_CV_TO_GV) == 0); | |
7440 | assert ((rv2cv->op_private & OPpMAY_RETURN_CONSTANT) == 0); | |
7441 | ||
7442 | o->op_private |= OPpASSIGN_CV_TO_GV; | |
7443 | rv2gv->op_private |= OPpDONT_INIT_GV; | |
7444 | rv2cv->op_private |= OPpMAY_RETURN_CONSTANT; | |
7445 | ||
7446 | break; | |
7447 | } | |
7448 | ||
fe1bc4cf | 7449 | |
79072805 | 7450 | default: |
2814eb74 | 7451 | o->op_opt = 1; |
79072805 LW |
7452 | break; |
7453 | } | |
a0d0e21e | 7454 | oldop = o; |
79072805 | 7455 | } |
a0d0e21e | 7456 | LEAVE; |
79072805 | 7457 | } |
beab0874 | 7458 | |
1cb0ed9b RGS |
7459 | char* |
7460 | Perl_custom_op_name(pTHX_ const OP* o) | |
53e06cf0 | 7461 | { |
97aff369 | 7462 | dVAR; |
e1ec3a88 | 7463 | const IV index = PTR2IV(o->op_ppaddr); |
53e06cf0 SC |
7464 | SV* keysv; |
7465 | HE* he; | |
7466 | ||
7467 | if (!PL_custom_op_names) /* This probably shouldn't happen */ | |
27da23d5 | 7468 | return (char *)PL_op_name[OP_CUSTOM]; |
53e06cf0 SC |
7469 | |
7470 | keysv = sv_2mortal(newSViv(index)); | |
7471 | ||
7472 | he = hv_fetch_ent(PL_custom_op_names, keysv, 0, 0); | |
7473 | if (!he) | |
27da23d5 | 7474 | return (char *)PL_op_name[OP_CUSTOM]; /* Don't know who you are */ |
53e06cf0 SC |
7475 | |
7476 | return SvPV_nolen(HeVAL(he)); | |
7477 | } | |
7478 | ||
1cb0ed9b RGS |
7479 | char* |
7480 | Perl_custom_op_desc(pTHX_ const OP* o) | |
53e06cf0 | 7481 | { |
97aff369 | 7482 | dVAR; |
e1ec3a88 | 7483 | const IV index = PTR2IV(o->op_ppaddr); |
53e06cf0 SC |
7484 | SV* keysv; |
7485 | HE* he; | |
7486 | ||
7487 | if (!PL_custom_op_descs) | |
27da23d5 | 7488 | return (char *)PL_op_desc[OP_CUSTOM]; |
53e06cf0 SC |
7489 | |
7490 | keysv = sv_2mortal(newSViv(index)); | |
7491 | ||
7492 | he = hv_fetch_ent(PL_custom_op_descs, keysv, 0, 0); | |
7493 | if (!he) | |
27da23d5 | 7494 | return (char *)PL_op_desc[OP_CUSTOM]; |
53e06cf0 SC |
7495 | |
7496 | return SvPV_nolen(HeVAL(he)); | |
7497 | } | |
19e8ce8e | 7498 | |
beab0874 JT |
7499 | #include "XSUB.h" |
7500 | ||
7501 | /* Efficient sub that returns a constant scalar value. */ | |
7502 | static void | |
acfe0abc | 7503 | const_sv_xsub(pTHX_ CV* cv) |
beab0874 | 7504 | { |
97aff369 | 7505 | dVAR; |
beab0874 | 7506 | dXSARGS; |
9cbac4c7 | 7507 | if (items != 0) { |
bb263b4e | 7508 | /*EMPTY*/; |
9cbac4c7 DM |
7509 | #if 0 |
7510 | Perl_croak(aTHX_ "usage: %s::%s()", | |
bfcb3514 | 7511 | HvNAME_get(GvSTASH(CvGV(cv))), GvNAME(CvGV(cv))); |
9cbac4c7 DM |
7512 | #endif |
7513 | } | |
9a049f1c | 7514 | EXTEND(sp, 1); |
0768512c | 7515 | ST(0) = (SV*)XSANY.any_ptr; |
beab0874 JT |
7516 | XSRETURN(1); |
7517 | } | |
4946a0fa NC |
7518 | |
7519 | /* | |
7520 | * Local variables: | |
7521 | * c-indentation-style: bsd | |
7522 | * c-basic-offset: 4 | |
7523 | * indent-tabs-mode: t | |
7524 | * End: | |
7525 | * | |
37442d52 RGS |
7526 | * ex: set ts=8 sts=4 sw=4 noet: |
7527 | */ |