Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* op.c |
79072805 | 2 | * |
4c79ee7a | 3 | * Copyright (c) 1991-2003, Larry Wall |
79072805 LW |
4 | * |
5 | * You may distribute under the terms of either the GNU General Public | |
6 | * License or the Artistic License, as specified in the README file. | |
7 | * | |
a0d0e21e LW |
8 | */ |
9 | ||
10 | /* | |
11 | * "You see: Mr. Drogo, he married poor Miss Primula Brandybuck. She was | |
12 | * our Mr. Bilbo's first cousin on the mother's side (her mother being the | |
13 | * youngest of the Old Took's daughters); and Mr. Drogo was his second | |
14 | * cousin. So Mr. Frodo is his first *and* second cousin, once removed | |
15 | * either way, as the saying is, if you follow me." --the Gaffer | |
79072805 LW |
16 | */ |
17 | ||
ccfc67b7 | 18 | |
79072805 | 19 | #include "EXTERN.h" |
864dbfa3 | 20 | #define PERL_IN_OP_C |
79072805 | 21 | #include "perl.h" |
77ca0c92 | 22 | #include "keywords.h" |
79072805 | 23 | |
a07e034d | 24 | #define CALL_PEEP(o) CALL_FPTR(PL_peepp)(aTHX_ o) |
a2efc822 | 25 | |
238a4c30 NIS |
26 | #if defined(PL_OP_SLAB_ALLOC) |
27 | ||
28 | #ifndef PERL_SLAB_SIZE | |
29 | #define PERL_SLAB_SIZE 2048 | |
30 | #endif | |
31 | ||
32 | #define NewOp(m,var,c,type) \ | |
33 | STMT_START { var = (type *) Slab_Alloc(m,c*sizeof(type)); } STMT_END | |
34 | ||
35 | #define FreeOp(p) Slab_Free(p) | |
b7dc083c | 36 | |
1c846c1f | 37 | STATIC void * |
cea2e8a9 | 38 | S_Slab_Alloc(pTHX_ int m, size_t sz) |
1c846c1f | 39 | { |
5a8e194f NIS |
40 | /* |
41 | * To make incrementing use count easy PL_OpSlab is an I32 * | |
42 | * To make inserting the link to slab PL_OpPtr is I32 ** | |
43 | * So compute size in units of sizeof(I32 *) as that is how Pl_OpPtr increments | |
44 | * Add an overhead for pointer to slab and round up as a number of pointers | |
45 | */ | |
46 | sz = (sz + 2*sizeof(I32 *) -1)/sizeof(I32 *); | |
238a4c30 | 47 | if ((PL_OpSpace -= sz) < 0) { |
083fcd59 JH |
48 | PL_OpPtr = (I32 **) PerlMemShared_malloc(PERL_SLAB_SIZE*sizeof(I32*)); |
49 | if (!PL_OpPtr) { | |
238a4c30 NIS |
50 | return NULL; |
51 | } | |
5a8e194f NIS |
52 | Zero(PL_OpPtr,PERL_SLAB_SIZE,I32 **); |
53 | /* We reserve the 0'th I32 sized chunk as a use count */ | |
54 | PL_OpSlab = (I32 *) PL_OpPtr; | |
55 | /* Reduce size by the use count word, and by the size we need. | |
56 | * Latter is to mimic the '-=' in the if() above | |
57 | */ | |
58 | PL_OpSpace = PERL_SLAB_SIZE - (sizeof(I32)+sizeof(I32 **)-1)/sizeof(I32 **) - sz; | |
238a4c30 NIS |
59 | /* Allocation pointer starts at the top. |
60 | Theory: because we build leaves before trunk allocating at end | |
61 | means that at run time access is cache friendly upward | |
62 | */ | |
5a8e194f | 63 | PL_OpPtr += PERL_SLAB_SIZE; |
238a4c30 NIS |
64 | } |
65 | assert( PL_OpSpace >= 0 ); | |
66 | /* Move the allocation pointer down */ | |
67 | PL_OpPtr -= sz; | |
5a8e194f | 68 | assert( PL_OpPtr > (I32 **) PL_OpSlab ); |
238a4c30 NIS |
69 | *PL_OpPtr = PL_OpSlab; /* Note which slab it belongs to */ |
70 | (*PL_OpSlab)++; /* Increment use count of slab */ | |
5a8e194f | 71 | assert( PL_OpPtr+sz <= ((I32 **) PL_OpSlab + PERL_SLAB_SIZE) ); |
238a4c30 NIS |
72 | assert( *PL_OpSlab > 0 ); |
73 | return (void *)(PL_OpPtr + 1); | |
74 | } | |
75 | ||
76 | STATIC void | |
77 | S_Slab_Free(pTHX_ void *op) | |
78 | { | |
5a8e194f NIS |
79 | I32 **ptr = (I32 **) op; |
80 | I32 *slab = ptr[-1]; | |
81 | assert( ptr-1 > (I32 **) slab ); | |
82 | assert( ptr < ( (I32 **) slab + PERL_SLAB_SIZE) ); | |
238a4c30 NIS |
83 | assert( *slab > 0 ); |
84 | if (--(*slab) == 0) { | |
083fcd59 JH |
85 | #ifdef NETWARE |
86 | #define PerlMemShared PerlMem | |
87 | #endif | |
88 | ||
89 | PerlMemShared_free(slab); | |
238a4c30 NIS |
90 | if (slab == PL_OpSlab) { |
91 | PL_OpSpace = 0; | |
92 | } | |
93 | } | |
b7dc083c | 94 | } |
76e3520e | 95 | |
1c846c1f | 96 | #else |
b7dc083c | 97 | #define NewOp(m, var, c, type) Newz(m, var, c, type) |
a594c7b4 | 98 | #define FreeOp(p) Safefree(p) |
b7dc083c | 99 | #endif |
e50aee73 | 100 | /* |
5dc0d613 | 101 | * In the following definition, the ", Nullop" is just to make the compiler |
a5f75d66 | 102 | * think the expression is of the right type: croak actually does a Siglongjmp. |
e50aee73 | 103 | */ |
11343788 | 104 | #define CHECKOP(type,o) \ |
3280af22 | 105 | ((PL_op_mask && PL_op_mask[type]) \ |
5dc0d613 | 106 | ? ( op_free((OP*)o), \ |
cb77fdf0 | 107 | Perl_croak(aTHX_ "'%s' trapped by operation mask", PL_op_desc[type]), \ |
28757baa | 108 | Nullop ) \ |
fc0dc3b3 | 109 | : CALL_FPTR(PL_check[type])(aTHX_ (OP*)o)) |
e50aee73 | 110 | |
e6438c1a | 111 | #define RETURN_UNLIMITED_NUMBER (PERL_INT_MAX / 2) |
c53d7c7d | 112 | |
76e3520e | 113 | STATIC char* |
cea2e8a9 | 114 | S_gv_ename(pTHX_ GV *gv) |
4633a7c4 | 115 | { |
2d8e6c8d | 116 | STRLEN n_a; |
4633a7c4 | 117 | SV* tmpsv = sv_newmortal(); |
46fc3d4c | 118 | gv_efullname3(tmpsv, gv, Nullch); |
2d8e6c8d | 119 | return SvPV(tmpsv,n_a); |
4633a7c4 LW |
120 | } |
121 | ||
76e3520e | 122 | STATIC OP * |
cea2e8a9 | 123 | S_no_fh_allowed(pTHX_ OP *o) |
79072805 | 124 | { |
cea2e8a9 | 125 | yyerror(Perl_form(aTHX_ "Missing comma after first argument to %s function", |
53e06cf0 | 126 | OP_DESC(o))); |
11343788 | 127 | return o; |
79072805 LW |
128 | } |
129 | ||
76e3520e | 130 | STATIC OP * |
cea2e8a9 | 131 | S_too_few_arguments(pTHX_ OP *o, char *name) |
79072805 | 132 | { |
cea2e8a9 | 133 | yyerror(Perl_form(aTHX_ "Not enough arguments for %s", name)); |
11343788 | 134 | return o; |
79072805 LW |
135 | } |
136 | ||
76e3520e | 137 | STATIC OP * |
cea2e8a9 | 138 | S_too_many_arguments(pTHX_ OP *o, char *name) |
79072805 | 139 | { |
cea2e8a9 | 140 | yyerror(Perl_form(aTHX_ "Too many arguments for %s", name)); |
11343788 | 141 | return o; |
79072805 LW |
142 | } |
143 | ||
76e3520e | 144 | STATIC void |
cea2e8a9 | 145 | S_bad_type(pTHX_ I32 n, char *t, char *name, OP *kid) |
8990e307 | 146 | { |
cea2e8a9 | 147 | yyerror(Perl_form(aTHX_ "Type of arg %d to %s must be %s (not %s)", |
53e06cf0 | 148 | (int)n, name, t, OP_DESC(kid))); |
8990e307 LW |
149 | } |
150 | ||
7a52d87a | 151 | STATIC void |
cea2e8a9 | 152 | S_no_bareword_allowed(pTHX_ OP *o) |
7a52d87a | 153 | { |
5a844595 | 154 | qerror(Perl_mess(aTHX_ |
35c1215d NC |
155 | "Bareword \"%"SVf"\" not allowed while \"strict subs\" in use", |
156 | cSVOPo_sv)); | |
7a52d87a GS |
157 | } |
158 | ||
79072805 LW |
159 | /* "register" allocation */ |
160 | ||
161 | PADOFFSET | |
dd2155a4 | 162 | Perl_allocmy(pTHX_ char *name) |
93a17b20 | 163 | { |
a0d0e21e | 164 | PADOFFSET off; |
a0d0e21e | 165 | |
dd2155a4 | 166 | /* complain about "my $_" etc etc */ |
155aba94 GS |
167 | if (!(PL_in_my == KEY_our || |
168 | isALPHA(name[1]) || | |
39e02b42 | 169 | (USE_UTF8_IN_NAMES && UTF8_IS_START(name[1])) || |
155aba94 | 170 | (name[1] == '_' && (int)strlen(name) > 2))) |
834a4ddd | 171 | { |
c4d0567e | 172 | if (!isPRINT(name[1]) || strchr("\t\n\r\f", name[1])) { |
2b92dfce GS |
173 | /* 1999-02-27 mjd@plover.com */ |
174 | char *p; | |
175 | p = strchr(name, '\0'); | |
176 | /* The next block assumes the buffer is at least 205 chars | |
177 | long. At present, it's always at least 256 chars. */ | |
178 | if (p-name > 200) { | |
179 | strcpy(name+200, "..."); | |
180 | p = name+199; | |
181 | } | |
182 | else { | |
183 | p[1] = '\0'; | |
184 | } | |
185 | /* Move everything else down one character */ | |
186 | for (; p-name > 2; p--) | |
187 | *p = *(p-1); | |
46fc3d4c | 188 | name[2] = toCTRL(name[1]); |
189 | name[1] = '^'; | |
190 | } | |
cea2e8a9 | 191 | yyerror(Perl_form(aTHX_ "Can't use global %s in \"my\"",name)); |
a0d0e21e | 192 | } |
748a9306 | 193 | |
dd2155a4 DM |
194 | /* check for duplicate declaration */ |
195 | pad_check_dup(name, | |
196 | PL_in_my == KEY_our, | |
197 | (PL_curstash ? PL_curstash : PL_defstash) | |
198 | ); | |
33b8ce05 | 199 | |
dd2155a4 DM |
200 | if (PL_in_my_stash && *name != '$') { |
201 | yyerror(Perl_form(aTHX_ | |
202 | "Can't declare class for non-scalar %s in \"%s\"", | |
203 | name, PL_in_my == KEY_our ? "our" : "my")); | |
6b35e009 GS |
204 | } |
205 | ||
dd2155a4 | 206 | /* allocate a spare slot and store the name in that slot */ |
93a17b20 | 207 | |
dd2155a4 DM |
208 | off = pad_add_name(name, |
209 | PL_in_my_stash, | |
210 | (PL_in_my == KEY_our | |
211 | ? (PL_curstash ? PL_curstash : PL_defstash) | |
212 | : Nullhv | |
213 | ), | |
214 | 0 /* not fake */ | |
215 | ); | |
216 | return off; | |
79072805 LW |
217 | } |
218 | ||
79072805 LW |
219 | /* Destructor */ |
220 | ||
221 | void | |
864dbfa3 | 222 | Perl_op_free(pTHX_ OP *o) |
79072805 | 223 | { |
85e6fe83 | 224 | register OP *kid, *nextkid; |
acb36ea4 | 225 | OPCODE type; |
79072805 | 226 | |
5dc0d613 | 227 | if (!o || o->op_seq == (U16)-1) |
79072805 LW |
228 | return; |
229 | ||
7934575e GS |
230 | if (o->op_private & OPpREFCOUNTED) { |
231 | switch (o->op_type) { | |
232 | case OP_LEAVESUB: | |
233 | case OP_LEAVESUBLV: | |
234 | case OP_LEAVEEVAL: | |
235 | case OP_LEAVE: | |
236 | case OP_SCOPE: | |
237 | case OP_LEAVEWRITE: | |
238 | OP_REFCNT_LOCK; | |
239 | if (OpREFCNT_dec(o)) { | |
240 | OP_REFCNT_UNLOCK; | |
241 | return; | |
242 | } | |
243 | OP_REFCNT_UNLOCK; | |
244 | break; | |
245 | default: | |
246 | break; | |
247 | } | |
248 | } | |
249 | ||
11343788 MB |
250 | if (o->op_flags & OPf_KIDS) { |
251 | for (kid = cUNOPo->op_first; kid; kid = nextkid) { | |
85e6fe83 | 252 | nextkid = kid->op_sibling; /* Get before next freeing kid */ |
79072805 | 253 | op_free(kid); |
85e6fe83 | 254 | } |
79072805 | 255 | } |
acb36ea4 GS |
256 | type = o->op_type; |
257 | if (type == OP_NULL) | |
eb160463 | 258 | type = (OPCODE)o->op_targ; |
acb36ea4 GS |
259 | |
260 | /* COP* is not cleared by op_clear() so that we may track line | |
261 | * numbers etc even after null() */ | |
262 | if (type == OP_NEXTSTATE || type == OP_SETSTATE || type == OP_DBSTATE) | |
263 | cop_free((COP*)o); | |
264 | ||
265 | op_clear(o); | |
238a4c30 | 266 | FreeOp(o); |
acb36ea4 | 267 | } |
79072805 | 268 | |
93c66552 DM |
269 | void |
270 | Perl_op_clear(pTHX_ OP *o) | |
acb36ea4 | 271 | { |
13137afc | 272 | |
11343788 | 273 | switch (o->op_type) { |
acb36ea4 GS |
274 | case OP_NULL: /* Was holding old type, if any. */ |
275 | case OP_ENTEREVAL: /* Was holding hints. */ | |
acb36ea4 | 276 | o->op_targ = 0; |
a0d0e21e | 277 | break; |
a6006777 | 278 | default: |
ac4c12e7 | 279 | if (!(o->op_flags & OPf_REF) |
0b94c7bb | 280 | || (PL_check[o->op_type] != MEMBER_TO_FPTR(Perl_ck_ftst))) |
a6006777 | 281 | break; |
282 | /* FALL THROUGH */ | |
463ee0b2 | 283 | case OP_GVSV: |
79072805 | 284 | case OP_GV: |
a6006777 | 285 | case OP_AELEMFAST: |
350de78d | 286 | #ifdef USE_ITHREADS |
971a9dd3 | 287 | if (cPADOPo->op_padix > 0) { |
dd2155a4 DM |
288 | /* No GvIN_PAD_off(cGVOPo_gv) here, because other references |
289 | * may still exist on the pad */ | |
290 | pad_swipe(cPADOPo->op_padix, TRUE); | |
971a9dd3 GS |
291 | cPADOPo->op_padix = 0; |
292 | } | |
350de78d | 293 | #else |
971a9dd3 | 294 | SvREFCNT_dec(cSVOPo->op_sv); |
7934575e | 295 | cSVOPo->op_sv = Nullsv; |
350de78d | 296 | #endif |
79072805 | 297 | break; |
a1ae71d2 | 298 | case OP_METHOD_NAMED: |
79072805 | 299 | case OP_CONST: |
11343788 | 300 | SvREFCNT_dec(cSVOPo->op_sv); |
acb36ea4 | 301 | cSVOPo->op_sv = Nullsv; |
3b1c21fa AB |
302 | #ifdef USE_ITHREADS |
303 | /** Bug #15654 | |
304 | Even if op_clear does a pad_free for the target of the op, | |
305 | pad_free doesn't actually remove the sv that exists in the bad | |
306 | instead it lives on. This results in that it could be reused as | |
307 | a target later on when the pad was reallocated. | |
308 | **/ | |
309 | if(o->op_targ) { | |
310 | pad_swipe(o->op_targ,1); | |
311 | o->op_targ = 0; | |
312 | } | |
313 | #endif | |
79072805 | 314 | break; |
748a9306 LW |
315 | case OP_GOTO: |
316 | case OP_NEXT: | |
317 | case OP_LAST: | |
318 | case OP_REDO: | |
11343788 | 319 | if (o->op_flags & (OPf_SPECIAL|OPf_STACKED|OPf_KIDS)) |
748a9306 LW |
320 | break; |
321 | /* FALL THROUGH */ | |
a0d0e21e | 322 | case OP_TRANS: |
acb36ea4 | 323 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { |
a0ed51b3 | 324 | SvREFCNT_dec(cSVOPo->op_sv); |
acb36ea4 GS |
325 | cSVOPo->op_sv = Nullsv; |
326 | } | |
327 | else { | |
a0ed51b3 | 328 | Safefree(cPVOPo->op_pv); |
acb36ea4 GS |
329 | cPVOPo->op_pv = Nullch; |
330 | } | |
a0d0e21e LW |
331 | break; |
332 | case OP_SUBST: | |
11343788 | 333 | op_free(cPMOPo->op_pmreplroot); |
971a9dd3 | 334 | goto clear_pmop; |
748a9306 | 335 | case OP_PUSHRE: |
971a9dd3 | 336 | #ifdef USE_ITHREADS |
ba89bb6e | 337 | if (INT2PTR(PADOFFSET, cPMOPo->op_pmreplroot)) { |
dd2155a4 DM |
338 | /* No GvIN_PAD_off here, because other references may still |
339 | * exist on the pad */ | |
340 | pad_swipe(INT2PTR(PADOFFSET, cPMOPo->op_pmreplroot), TRUE); | |
971a9dd3 GS |
341 | } |
342 | #else | |
343 | SvREFCNT_dec((SV*)cPMOPo->op_pmreplroot); | |
344 | #endif | |
345 | /* FALL THROUGH */ | |
a0d0e21e | 346 | case OP_MATCH: |
8782bef2 | 347 | case OP_QR: |
971a9dd3 | 348 | clear_pmop: |
cb55de95 JH |
349 | { |
350 | HV *pmstash = PmopSTASH(cPMOPo); | |
351 | if (pmstash && SvREFCNT(pmstash)) { | |
352 | PMOP *pmop = HvPMROOT(pmstash); | |
353 | PMOP *lastpmop = NULL; | |
354 | while (pmop) { | |
355 | if (cPMOPo == pmop) { | |
356 | if (lastpmop) | |
357 | lastpmop->op_pmnext = pmop->op_pmnext; | |
358 | else | |
359 | HvPMROOT(pmstash) = pmop->op_pmnext; | |
360 | break; | |
361 | } | |
362 | lastpmop = pmop; | |
363 | pmop = pmop->op_pmnext; | |
364 | } | |
83da49e6 | 365 | } |
05ec9bb3 | 366 | PmopSTASH_free(cPMOPo); |
cb55de95 | 367 | } |
971a9dd3 | 368 | cPMOPo->op_pmreplroot = Nullop; |
5f8cb046 DM |
369 | /* we use the "SAFE" version of the PM_ macros here |
370 | * since sv_clean_all might release some PMOPs | |
371 | * after PL_regex_padav has been cleared | |
372 | * and the clearing of PL_regex_padav needs to | |
373 | * happen before sv_clean_all | |
374 | */ | |
375 | ReREFCNT_dec(PM_GETRE_SAFE(cPMOPo)); | |
376 | PM_SETRE_SAFE(cPMOPo, (REGEXP*)NULL); | |
13137afc AB |
377 | #ifdef USE_ITHREADS |
378 | if(PL_regex_pad) { /* We could be in destruction */ | |
379 | av_push((AV*) PL_regex_pad[0],(SV*) PL_regex_pad[(cPMOPo)->op_pmoffset]); | |
1cc8b4c5 | 380 | SvREPADTMP_on(PL_regex_pad[(cPMOPo)->op_pmoffset]); |
13137afc AB |
381 | PM_SETRE(cPMOPo, (cPMOPo)->op_pmoffset); |
382 | } | |
1eb1540c | 383 | #endif |
13137afc | 384 | |
a0d0e21e | 385 | break; |
79072805 LW |
386 | } |
387 | ||
743e66e6 | 388 | if (o->op_targ > 0) { |
11343788 | 389 | pad_free(o->op_targ); |
743e66e6 GS |
390 | o->op_targ = 0; |
391 | } | |
79072805 LW |
392 | } |
393 | ||
76e3520e | 394 | STATIC void |
3eb57f73 HS |
395 | S_cop_free(pTHX_ COP* cop) |
396 | { | |
05ec9bb3 NIS |
397 | Safefree(cop->cop_label); /* FIXME: treaddead ??? */ |
398 | CopFILE_free(cop); | |
399 | CopSTASH_free(cop); | |
0453d815 | 400 | if (! specialWARN(cop->cop_warnings)) |
3eb57f73 | 401 | SvREFCNT_dec(cop->cop_warnings); |
05ec9bb3 NIS |
402 | if (! specialCopIO(cop->cop_io)) { |
403 | #ifdef USE_ITHREADS | |
042f6df8 | 404 | #if 0 |
05ec9bb3 NIS |
405 | STRLEN len; |
406 | char *s = SvPV(cop->cop_io,len); | |
b178108d JH |
407 | Perl_warn(aTHX_ "io='%.*s'",(int) len,s); /* ??? --jhi */ |
408 | #endif | |
05ec9bb3 | 409 | #else |
ac27b0f5 | 410 | SvREFCNT_dec(cop->cop_io); |
05ec9bb3 NIS |
411 | #endif |
412 | } | |
3eb57f73 HS |
413 | } |
414 | ||
93c66552 DM |
415 | void |
416 | Perl_op_null(pTHX_ OP *o) | |
8990e307 | 417 | { |
acb36ea4 GS |
418 | if (o->op_type == OP_NULL) |
419 | return; | |
420 | op_clear(o); | |
11343788 MB |
421 | o->op_targ = o->op_type; |
422 | o->op_type = OP_NULL; | |
22c35a8c | 423 | o->op_ppaddr = PL_ppaddr[OP_NULL]; |
8990e307 LW |
424 | } |
425 | ||
79072805 LW |
426 | /* Contextualizers */ |
427 | ||
463ee0b2 | 428 | #define LINKLIST(o) ((o)->op_next ? (o)->op_next : linklist((OP*)o)) |
79072805 LW |
429 | |
430 | OP * | |
864dbfa3 | 431 | Perl_linklist(pTHX_ OP *o) |
79072805 LW |
432 | { |
433 | register OP *kid; | |
434 | ||
11343788 MB |
435 | if (o->op_next) |
436 | return o->op_next; | |
79072805 LW |
437 | |
438 | /* establish postfix order */ | |
11343788 MB |
439 | if (cUNOPo->op_first) { |
440 | o->op_next = LINKLIST(cUNOPo->op_first); | |
441 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) { | |
79072805 LW |
442 | if (kid->op_sibling) |
443 | kid->op_next = LINKLIST(kid->op_sibling); | |
444 | else | |
11343788 | 445 | kid->op_next = o; |
79072805 LW |
446 | } |
447 | } | |
448 | else | |
11343788 | 449 | o->op_next = o; |
79072805 | 450 | |
11343788 | 451 | return o->op_next; |
79072805 LW |
452 | } |
453 | ||
454 | OP * | |
864dbfa3 | 455 | Perl_scalarkids(pTHX_ OP *o) |
79072805 LW |
456 | { |
457 | OP *kid; | |
11343788 MB |
458 | if (o && o->op_flags & OPf_KIDS) { |
459 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
79072805 LW |
460 | scalar(kid); |
461 | } | |
11343788 | 462 | return o; |
79072805 LW |
463 | } |
464 | ||
76e3520e | 465 | STATIC OP * |
cea2e8a9 | 466 | S_scalarboolean(pTHX_ OP *o) |
8990e307 | 467 | { |
d008e5eb | 468 | if (o->op_type == OP_SASSIGN && cBINOPo->op_first->op_type == OP_CONST) { |
d008e5eb | 469 | if (ckWARN(WARN_SYNTAX)) { |
57843af0 | 470 | line_t oldline = CopLINE(PL_curcop); |
a0d0e21e | 471 | |
d008e5eb | 472 | if (PL_copline != NOLINE) |
57843af0 | 473 | CopLINE_set(PL_curcop, PL_copline); |
9014280d | 474 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Found = in conditional, should be =="); |
57843af0 | 475 | CopLINE_set(PL_curcop, oldline); |
d008e5eb | 476 | } |
a0d0e21e | 477 | } |
11343788 | 478 | return scalar(o); |
8990e307 LW |
479 | } |
480 | ||
481 | OP * | |
864dbfa3 | 482 | Perl_scalar(pTHX_ OP *o) |
79072805 LW |
483 | { |
484 | OP *kid; | |
485 | ||
a0d0e21e | 486 | /* assumes no premature commitment */ |
3280af22 | 487 | if (!o || (o->op_flags & OPf_WANT) || PL_error_count |
5dc0d613 | 488 | || o->op_type == OP_RETURN) |
7e363e51 | 489 | { |
11343788 | 490 | return o; |
7e363e51 | 491 | } |
79072805 | 492 | |
5dc0d613 | 493 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_SCALAR; |
79072805 | 494 | |
11343788 | 495 | switch (o->op_type) { |
79072805 | 496 | case OP_REPEAT: |
11343788 | 497 | scalar(cBINOPo->op_first); |
8990e307 | 498 | break; |
79072805 LW |
499 | case OP_OR: |
500 | case OP_AND: | |
501 | case OP_COND_EXPR: | |
11343788 | 502 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
8990e307 | 503 | scalar(kid); |
79072805 | 504 | break; |
a0d0e21e | 505 | case OP_SPLIT: |
11343788 | 506 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e | 507 | if (!kPMOP->op_pmreplroot) |
12bcd1a6 | 508 | deprecate_old("implicit split to @_"); |
a0d0e21e LW |
509 | } |
510 | /* FALL THROUGH */ | |
79072805 | 511 | case OP_MATCH: |
8782bef2 | 512 | case OP_QR: |
79072805 LW |
513 | case OP_SUBST: |
514 | case OP_NULL: | |
8990e307 | 515 | default: |
11343788 MB |
516 | if (o->op_flags & OPf_KIDS) { |
517 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) | |
8990e307 LW |
518 | scalar(kid); |
519 | } | |
79072805 LW |
520 | break; |
521 | case OP_LEAVE: | |
522 | case OP_LEAVETRY: | |
5dc0d613 | 523 | kid = cLISTOPo->op_first; |
54310121 | 524 | scalar(kid); |
155aba94 | 525 | while ((kid = kid->op_sibling)) { |
54310121 | 526 | if (kid->op_sibling) |
527 | scalarvoid(kid); | |
528 | else | |
529 | scalar(kid); | |
530 | } | |
3280af22 | 531 | WITH_THR(PL_curcop = &PL_compiling); |
54310121 | 532 | break; |
748a9306 | 533 | case OP_SCOPE: |
79072805 | 534 | case OP_LINESEQ: |
8990e307 | 535 | case OP_LIST: |
11343788 | 536 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
537 | if (kid->op_sibling) |
538 | scalarvoid(kid); | |
539 | else | |
540 | scalar(kid); | |
541 | } | |
3280af22 | 542 | WITH_THR(PL_curcop = &PL_compiling); |
79072805 | 543 | break; |
a801c63c RGS |
544 | case OP_SORT: |
545 | if (ckWARN(WARN_VOID)) | |
9014280d | 546 | Perl_warner(aTHX_ packWARN(WARN_VOID), "Useless use of sort in scalar context"); |
79072805 | 547 | } |
11343788 | 548 | return o; |
79072805 LW |
549 | } |
550 | ||
551 | OP * | |
864dbfa3 | 552 | Perl_scalarvoid(pTHX_ OP *o) |
79072805 LW |
553 | { |
554 | OP *kid; | |
8990e307 LW |
555 | char* useless = 0; |
556 | SV* sv; | |
2ebea0a1 GS |
557 | U8 want; |
558 | ||
acb36ea4 GS |
559 | if (o->op_type == OP_NEXTSTATE |
560 | || o->op_type == OP_SETSTATE | |
561 | || o->op_type == OP_DBSTATE | |
562 | || (o->op_type == OP_NULL && (o->op_targ == OP_NEXTSTATE | |
563 | || o->op_targ == OP_SETSTATE | |
564 | || o->op_targ == OP_DBSTATE))) | |
2ebea0a1 | 565 | PL_curcop = (COP*)o; /* for warning below */ |
79072805 | 566 | |
54310121 | 567 | /* assumes no premature commitment */ |
2ebea0a1 GS |
568 | want = o->op_flags & OPf_WANT; |
569 | if ((want && want != OPf_WANT_SCALAR) || PL_error_count | |
5dc0d613 | 570 | || o->op_type == OP_RETURN) |
7e363e51 | 571 | { |
11343788 | 572 | return o; |
7e363e51 | 573 | } |
79072805 | 574 | |
b162f9ea | 575 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
576 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
577 | { | |
b162f9ea | 578 | return scalar(o); /* As if inside SASSIGN */ |
7e363e51 | 579 | } |
1c846c1f | 580 | |
5dc0d613 | 581 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_VOID; |
79072805 | 582 | |
11343788 | 583 | switch (o->op_type) { |
79072805 | 584 | default: |
22c35a8c | 585 | if (!(PL_opargs[o->op_type] & OA_FOLDCONST)) |
8990e307 | 586 | break; |
36477c24 | 587 | /* FALL THROUGH */ |
588 | case OP_REPEAT: | |
11343788 | 589 | if (o->op_flags & OPf_STACKED) |
8990e307 | 590 | break; |
5d82c453 GA |
591 | goto func_ops; |
592 | case OP_SUBSTR: | |
593 | if (o->op_private == 4) | |
594 | break; | |
8990e307 LW |
595 | /* FALL THROUGH */ |
596 | case OP_GVSV: | |
597 | case OP_WANTARRAY: | |
598 | case OP_GV: | |
599 | case OP_PADSV: | |
600 | case OP_PADAV: | |
601 | case OP_PADHV: | |
602 | case OP_PADANY: | |
603 | case OP_AV2ARYLEN: | |
8990e307 | 604 | case OP_REF: |
a0d0e21e LW |
605 | case OP_REFGEN: |
606 | case OP_SREFGEN: | |
8990e307 LW |
607 | case OP_DEFINED: |
608 | case OP_HEX: | |
609 | case OP_OCT: | |
610 | case OP_LENGTH: | |
8990e307 LW |
611 | case OP_VEC: |
612 | case OP_INDEX: | |
613 | case OP_RINDEX: | |
614 | case OP_SPRINTF: | |
615 | case OP_AELEM: | |
616 | case OP_AELEMFAST: | |
617 | case OP_ASLICE: | |
8990e307 LW |
618 | case OP_HELEM: |
619 | case OP_HSLICE: | |
620 | case OP_UNPACK: | |
621 | case OP_PACK: | |
8990e307 LW |
622 | case OP_JOIN: |
623 | case OP_LSLICE: | |
624 | case OP_ANONLIST: | |
625 | case OP_ANONHASH: | |
626 | case OP_SORT: | |
627 | case OP_REVERSE: | |
628 | case OP_RANGE: | |
629 | case OP_FLIP: | |
630 | case OP_FLOP: | |
631 | case OP_CALLER: | |
632 | case OP_FILENO: | |
633 | case OP_EOF: | |
634 | case OP_TELL: | |
635 | case OP_GETSOCKNAME: | |
636 | case OP_GETPEERNAME: | |
637 | case OP_READLINK: | |
638 | case OP_TELLDIR: | |
639 | case OP_GETPPID: | |
640 | case OP_GETPGRP: | |
641 | case OP_GETPRIORITY: | |
642 | case OP_TIME: | |
643 | case OP_TMS: | |
644 | case OP_LOCALTIME: | |
645 | case OP_GMTIME: | |
646 | case OP_GHBYNAME: | |
647 | case OP_GHBYADDR: | |
648 | case OP_GHOSTENT: | |
649 | case OP_GNBYNAME: | |
650 | case OP_GNBYADDR: | |
651 | case OP_GNETENT: | |
652 | case OP_GPBYNAME: | |
653 | case OP_GPBYNUMBER: | |
654 | case OP_GPROTOENT: | |
655 | case OP_GSBYNAME: | |
656 | case OP_GSBYPORT: | |
657 | case OP_GSERVENT: | |
658 | case OP_GPWNAM: | |
659 | case OP_GPWUID: | |
660 | case OP_GGRNAM: | |
661 | case OP_GGRGID: | |
662 | case OP_GETLOGIN: | |
78e1b766 | 663 | case OP_PROTOTYPE: |
5d82c453 | 664 | func_ops: |
64aac5a9 | 665 | if (!(o->op_private & (OPpLVAL_INTRO|OPpOUR_INTRO))) |
53e06cf0 | 666 | useless = OP_DESC(o); |
8990e307 LW |
667 | break; |
668 | ||
669 | case OP_RV2GV: | |
670 | case OP_RV2SV: | |
671 | case OP_RV2AV: | |
672 | case OP_RV2HV: | |
192587c2 | 673 | if (!(o->op_private & (OPpLVAL_INTRO|OPpOUR_INTRO)) && |
11343788 | 674 | (!o->op_sibling || o->op_sibling->op_type != OP_READLINE)) |
8990e307 LW |
675 | useless = "a variable"; |
676 | break; | |
79072805 LW |
677 | |
678 | case OP_CONST: | |
7766f137 | 679 | sv = cSVOPo_sv; |
7a52d87a GS |
680 | if (cSVOPo->op_private & OPpCONST_STRICT) |
681 | no_bareword_allowed(o); | |
682 | else { | |
d008e5eb GS |
683 | if (ckWARN(WARN_VOID)) { |
684 | useless = "a constant"; | |
960b4253 MG |
685 | /* the constants 0 and 1 are permitted as they are |
686 | conventionally used as dummies in constructs like | |
687 | 1 while some_condition_with_side_effects; */ | |
d008e5eb GS |
688 | if (SvNIOK(sv) && (SvNV(sv) == 0.0 || SvNV(sv) == 1.0)) |
689 | useless = 0; | |
690 | else if (SvPOK(sv)) { | |
a52fe3ac A |
691 | /* perl4's way of mixing documentation and code |
692 | (before the invention of POD) was based on a | |
693 | trick to mix nroff and perl code. The trick was | |
694 | built upon these three nroff macros being used in | |
695 | void context. The pink camel has the details in | |
696 | the script wrapman near page 319. */ | |
d008e5eb GS |
697 | if (strnEQ(SvPVX(sv), "di", 2) || |
698 | strnEQ(SvPVX(sv), "ds", 2) || | |
699 | strnEQ(SvPVX(sv), "ig", 2)) | |
700 | useless = 0; | |
701 | } | |
8990e307 LW |
702 | } |
703 | } | |
93c66552 | 704 | op_null(o); /* don't execute or even remember it */ |
79072805 LW |
705 | break; |
706 | ||
707 | case OP_POSTINC: | |
11343788 | 708 | o->op_type = OP_PREINC; /* pre-increment is faster */ |
22c35a8c | 709 | o->op_ppaddr = PL_ppaddr[OP_PREINC]; |
79072805 LW |
710 | break; |
711 | ||
712 | case OP_POSTDEC: | |
11343788 | 713 | o->op_type = OP_PREDEC; /* pre-decrement is faster */ |
22c35a8c | 714 | o->op_ppaddr = PL_ppaddr[OP_PREDEC]; |
79072805 LW |
715 | break; |
716 | ||
79072805 LW |
717 | case OP_OR: |
718 | case OP_AND: | |
c963b151 | 719 | case OP_DOR: |
79072805 | 720 | case OP_COND_EXPR: |
11343788 | 721 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
722 | scalarvoid(kid); |
723 | break; | |
5aabfad6 | 724 | |
a0d0e21e | 725 | case OP_NULL: |
11343788 | 726 | if (o->op_flags & OPf_STACKED) |
a0d0e21e | 727 | break; |
5aabfad6 | 728 | /* FALL THROUGH */ |
2ebea0a1 GS |
729 | case OP_NEXTSTATE: |
730 | case OP_DBSTATE: | |
79072805 LW |
731 | case OP_ENTERTRY: |
732 | case OP_ENTER: | |
11343788 | 733 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 734 | break; |
54310121 | 735 | /* FALL THROUGH */ |
463ee0b2 | 736 | case OP_SCOPE: |
79072805 LW |
737 | case OP_LEAVE: |
738 | case OP_LEAVETRY: | |
a0d0e21e | 739 | case OP_LEAVELOOP: |
79072805 | 740 | case OP_LINESEQ: |
79072805 | 741 | case OP_LIST: |
11343788 | 742 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
743 | scalarvoid(kid); |
744 | break; | |
c90c0ff4 | 745 | case OP_ENTEREVAL: |
5196be3e | 746 | scalarkids(o); |
c90c0ff4 | 747 | break; |
5aabfad6 | 748 | case OP_REQUIRE: |
c90c0ff4 | 749 | /* all requires must return a boolean value */ |
5196be3e | 750 | o->op_flags &= ~OPf_WANT; |
d6483035 GS |
751 | /* FALL THROUGH */ |
752 | case OP_SCALAR: | |
5196be3e | 753 | return scalar(o); |
a0d0e21e | 754 | case OP_SPLIT: |
11343788 | 755 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e | 756 | if (!kPMOP->op_pmreplroot) |
12bcd1a6 | 757 | deprecate_old("implicit split to @_"); |
a0d0e21e LW |
758 | } |
759 | break; | |
79072805 | 760 | } |
411caa50 | 761 | if (useless && ckWARN(WARN_VOID)) |
9014280d | 762 | Perl_warner(aTHX_ packWARN(WARN_VOID), "Useless use of %s in void context", useless); |
11343788 | 763 | return o; |
79072805 LW |
764 | } |
765 | ||
766 | OP * | |
864dbfa3 | 767 | Perl_listkids(pTHX_ OP *o) |
79072805 LW |
768 | { |
769 | OP *kid; | |
11343788 MB |
770 | if (o && o->op_flags & OPf_KIDS) { |
771 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
79072805 LW |
772 | list(kid); |
773 | } | |
11343788 | 774 | return o; |
79072805 LW |
775 | } |
776 | ||
777 | OP * | |
864dbfa3 | 778 | Perl_list(pTHX_ OP *o) |
79072805 LW |
779 | { |
780 | OP *kid; | |
781 | ||
a0d0e21e | 782 | /* assumes no premature commitment */ |
3280af22 | 783 | if (!o || (o->op_flags & OPf_WANT) || PL_error_count |
5dc0d613 | 784 | || o->op_type == OP_RETURN) |
7e363e51 | 785 | { |
11343788 | 786 | return o; |
7e363e51 | 787 | } |
79072805 | 788 | |
b162f9ea | 789 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
790 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
791 | { | |
b162f9ea | 792 | return o; /* As if inside SASSIGN */ |
7e363e51 | 793 | } |
1c846c1f | 794 | |
5dc0d613 | 795 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_LIST; |
79072805 | 796 | |
11343788 | 797 | switch (o->op_type) { |
79072805 LW |
798 | case OP_FLOP: |
799 | case OP_REPEAT: | |
11343788 | 800 | list(cBINOPo->op_first); |
79072805 LW |
801 | break; |
802 | case OP_OR: | |
803 | case OP_AND: | |
804 | case OP_COND_EXPR: | |
11343788 | 805 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
806 | list(kid); |
807 | break; | |
808 | default: | |
809 | case OP_MATCH: | |
8782bef2 | 810 | case OP_QR: |
79072805 LW |
811 | case OP_SUBST: |
812 | case OP_NULL: | |
11343788 | 813 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 814 | break; |
11343788 MB |
815 | if (!o->op_next && cUNOPo->op_first->op_type == OP_FLOP) { |
816 | list(cBINOPo->op_first); | |
817 | return gen_constant_list(o); | |
79072805 LW |
818 | } |
819 | case OP_LIST: | |
11343788 | 820 | listkids(o); |
79072805 LW |
821 | break; |
822 | case OP_LEAVE: | |
823 | case OP_LEAVETRY: | |
5dc0d613 | 824 | kid = cLISTOPo->op_first; |
54310121 | 825 | list(kid); |
155aba94 | 826 | while ((kid = kid->op_sibling)) { |
54310121 | 827 | if (kid->op_sibling) |
828 | scalarvoid(kid); | |
829 | else | |
830 | list(kid); | |
831 | } | |
3280af22 | 832 | WITH_THR(PL_curcop = &PL_compiling); |
54310121 | 833 | break; |
748a9306 | 834 | case OP_SCOPE: |
79072805 | 835 | case OP_LINESEQ: |
11343788 | 836 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
837 | if (kid->op_sibling) |
838 | scalarvoid(kid); | |
839 | else | |
840 | list(kid); | |
841 | } | |
3280af22 | 842 | WITH_THR(PL_curcop = &PL_compiling); |
79072805 | 843 | break; |
c90c0ff4 | 844 | case OP_REQUIRE: |
845 | /* all requires must return a boolean value */ | |
5196be3e MB |
846 | o->op_flags &= ~OPf_WANT; |
847 | return scalar(o); | |
79072805 | 848 | } |
11343788 | 849 | return o; |
79072805 LW |
850 | } |
851 | ||
852 | OP * | |
864dbfa3 | 853 | Perl_scalarseq(pTHX_ OP *o) |
79072805 LW |
854 | { |
855 | OP *kid; | |
856 | ||
11343788 MB |
857 | if (o) { |
858 | if (o->op_type == OP_LINESEQ || | |
859 | o->op_type == OP_SCOPE || | |
860 | o->op_type == OP_LEAVE || | |
861 | o->op_type == OP_LEAVETRY) | |
463ee0b2 | 862 | { |
11343788 | 863 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
ed6116ce | 864 | if (kid->op_sibling) { |
463ee0b2 | 865 | scalarvoid(kid); |
ed6116ce | 866 | } |
463ee0b2 | 867 | } |
3280af22 | 868 | PL_curcop = &PL_compiling; |
79072805 | 869 | } |
11343788 | 870 | o->op_flags &= ~OPf_PARENS; |
3280af22 | 871 | if (PL_hints & HINT_BLOCK_SCOPE) |
11343788 | 872 | o->op_flags |= OPf_PARENS; |
79072805 | 873 | } |
8990e307 | 874 | else |
11343788 MB |
875 | o = newOP(OP_STUB, 0); |
876 | return o; | |
79072805 LW |
877 | } |
878 | ||
76e3520e | 879 | STATIC OP * |
cea2e8a9 | 880 | S_modkids(pTHX_ OP *o, I32 type) |
79072805 LW |
881 | { |
882 | OP *kid; | |
11343788 MB |
883 | if (o && o->op_flags & OPf_KIDS) { |
884 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
463ee0b2 | 885 | mod(kid, type); |
79072805 | 886 | } |
11343788 | 887 | return o; |
79072805 LW |
888 | } |
889 | ||
79072805 | 890 | OP * |
864dbfa3 | 891 | Perl_mod(pTHX_ OP *o, I32 type) |
79072805 LW |
892 | { |
893 | OP *kid; | |
79072805 | 894 | |
3280af22 | 895 | if (!o || PL_error_count) |
11343788 | 896 | return o; |
79072805 | 897 | |
b162f9ea | 898 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
899 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
900 | { | |
b162f9ea | 901 | return o; |
7e363e51 | 902 | } |
1c846c1f | 903 | |
11343788 | 904 | switch (o->op_type) { |
68dc0745 | 905 | case OP_UNDEF: |
3280af22 | 906 | PL_modcount++; |
5dc0d613 | 907 | return o; |
a0d0e21e | 908 | case OP_CONST: |
11343788 | 909 | if (!(o->op_private & (OPpCONST_ARYBASE))) |
a0d0e21e | 910 | goto nomod; |
3280af22 | 911 | if (PL_eval_start && PL_eval_start->op_type == OP_CONST) { |
7766f137 | 912 | PL_compiling.cop_arybase = (I32)SvIV(cSVOPx(PL_eval_start)->op_sv); |
3280af22 | 913 | PL_eval_start = 0; |
a0d0e21e LW |
914 | } |
915 | else if (!type) { | |
3280af22 NIS |
916 | SAVEI32(PL_compiling.cop_arybase); |
917 | PL_compiling.cop_arybase = 0; | |
a0d0e21e LW |
918 | } |
919 | else if (type == OP_REFGEN) | |
920 | goto nomod; | |
921 | else | |
cea2e8a9 | 922 | Perl_croak(aTHX_ "That use of $[ is unsupported"); |
a0d0e21e | 923 | break; |
5f05dabc | 924 | case OP_STUB: |
5196be3e | 925 | if (o->op_flags & OPf_PARENS) |
5f05dabc | 926 | break; |
927 | goto nomod; | |
a0d0e21e LW |
928 | case OP_ENTERSUB: |
929 | if ((type == OP_UNDEF || type == OP_REFGEN) && | |
11343788 MB |
930 | !(o->op_flags & OPf_STACKED)) { |
931 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
22c35a8c | 932 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 | 933 | assert(cUNOPo->op_first->op_type == OP_NULL); |
93c66552 | 934 | op_null(((LISTOP*)cUNOPo->op_first)->op_first);/* disable pushmark */ |
79072805 LW |
935 | break; |
936 | } | |
95f0a2f1 SB |
937 | else if (o->op_private & OPpENTERSUB_NOMOD) |
938 | return o; | |
cd06dffe GS |
939 | else { /* lvalue subroutine call */ |
940 | o->op_private |= OPpLVAL_INTRO; | |
e6438c1a | 941 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
4978d6d9 | 942 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) { |
cd06dffe GS |
943 | /* Backward compatibility mode: */ |
944 | o->op_private |= OPpENTERSUB_INARGS; | |
945 | break; | |
946 | } | |
947 | else { /* Compile-time error message: */ | |
948 | OP *kid = cUNOPo->op_first; | |
949 | CV *cv; | |
950 | OP *okid; | |
951 | ||
952 | if (kid->op_type == OP_PUSHMARK) | |
953 | goto skip_kids; | |
954 | if (kid->op_type != OP_NULL || kid->op_targ != OP_LIST) | |
955 | Perl_croak(aTHX_ | |
956 | "panic: unexpected lvalue entersub " | |
55140b79 | 957 | "args: type/targ %ld:%"UVuf, |
3d811634 | 958 | (long)kid->op_type, (UV)kid->op_targ); |
cd06dffe GS |
959 | kid = kLISTOP->op_first; |
960 | skip_kids: | |
961 | while (kid->op_sibling) | |
962 | kid = kid->op_sibling; | |
963 | if (!(kid->op_type == OP_NULL && kid->op_targ == OP_RV2CV)) { | |
964 | /* Indirect call */ | |
965 | if (kid->op_type == OP_METHOD_NAMED | |
966 | || kid->op_type == OP_METHOD) | |
967 | { | |
87d7fd28 | 968 | UNOP *newop; |
b2ffa427 | 969 | |
87d7fd28 | 970 | NewOp(1101, newop, 1, UNOP); |
349fd7b7 GS |
971 | newop->op_type = OP_RV2CV; |
972 | newop->op_ppaddr = PL_ppaddr[OP_RV2CV]; | |
87d7fd28 GS |
973 | newop->op_first = Nullop; |
974 | newop->op_next = (OP*)newop; | |
975 | kid->op_sibling = (OP*)newop; | |
349fd7b7 | 976 | newop->op_private |= OPpLVAL_INTRO; |
cd06dffe GS |
977 | break; |
978 | } | |
b2ffa427 | 979 | |
cd06dffe GS |
980 | if (kid->op_type != OP_RV2CV) |
981 | Perl_croak(aTHX_ | |
982 | "panic: unexpected lvalue entersub " | |
55140b79 | 983 | "entry via type/targ %ld:%"UVuf, |
3d811634 | 984 | (long)kid->op_type, (UV)kid->op_targ); |
cd06dffe GS |
985 | kid->op_private |= OPpLVAL_INTRO; |
986 | break; /* Postpone until runtime */ | |
987 | } | |
b2ffa427 NIS |
988 | |
989 | okid = kid; | |
cd06dffe GS |
990 | kid = kUNOP->op_first; |
991 | if (kid->op_type == OP_NULL && kid->op_targ == OP_RV2SV) | |
992 | kid = kUNOP->op_first; | |
b2ffa427 | 993 | if (kid->op_type == OP_NULL) |
cd06dffe GS |
994 | Perl_croak(aTHX_ |
995 | "Unexpected constant lvalue entersub " | |
55140b79 | 996 | "entry via type/targ %ld:%"UVuf, |
3d811634 | 997 | (long)kid->op_type, (UV)kid->op_targ); |
cd06dffe GS |
998 | if (kid->op_type != OP_GV) { |
999 | /* Restore RV2CV to check lvalueness */ | |
1000 | restore_2cv: | |
1001 | if (kid->op_next && kid->op_next != kid) { /* Happens? */ | |
1002 | okid->op_next = kid->op_next; | |
1003 | kid->op_next = okid; | |
1004 | } | |
1005 | else | |
1006 | okid->op_next = Nullop; | |
1007 | okid->op_type = OP_RV2CV; | |
1008 | okid->op_targ = 0; | |
1009 | okid->op_ppaddr = PL_ppaddr[OP_RV2CV]; | |
1010 | okid->op_private |= OPpLVAL_INTRO; | |
1011 | break; | |
1012 | } | |
b2ffa427 | 1013 | |
638eceb6 | 1014 | cv = GvCV(kGVOP_gv); |
1c846c1f | 1015 | if (!cv) |
cd06dffe GS |
1016 | goto restore_2cv; |
1017 | if (CvLVALUE(cv)) | |
1018 | break; | |
1019 | } | |
1020 | } | |
79072805 LW |
1021 | /* FALL THROUGH */ |
1022 | default: | |
a0d0e21e LW |
1023 | nomod: |
1024 | /* grep, foreach, subcalls, refgen */ | |
1025 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) | |
1026 | break; | |
cea2e8a9 | 1027 | yyerror(Perl_form(aTHX_ "Can't modify %s in %s", |
638bc118 | 1028 | (o->op_type == OP_NULL && (o->op_flags & OPf_SPECIAL) |
cd06dffe GS |
1029 | ? "do block" |
1030 | : (o->op_type == OP_ENTERSUB | |
1031 | ? "non-lvalue subroutine call" | |
53e06cf0 | 1032 | : OP_DESC(o))), |
22c35a8c | 1033 | type ? PL_op_desc[type] : "local")); |
11343788 | 1034 | return o; |
79072805 | 1035 | |
a0d0e21e LW |
1036 | case OP_PREINC: |
1037 | case OP_PREDEC: | |
1038 | case OP_POW: | |
1039 | case OP_MULTIPLY: | |
1040 | case OP_DIVIDE: | |
1041 | case OP_MODULO: | |
1042 | case OP_REPEAT: | |
1043 | case OP_ADD: | |
1044 | case OP_SUBTRACT: | |
1045 | case OP_CONCAT: | |
1046 | case OP_LEFT_SHIFT: | |
1047 | case OP_RIGHT_SHIFT: | |
1048 | case OP_BIT_AND: | |
1049 | case OP_BIT_XOR: | |
1050 | case OP_BIT_OR: | |
1051 | case OP_I_MULTIPLY: | |
1052 | case OP_I_DIVIDE: | |
1053 | case OP_I_MODULO: | |
1054 | case OP_I_ADD: | |
1055 | case OP_I_SUBTRACT: | |
11343788 | 1056 | if (!(o->op_flags & OPf_STACKED)) |
a0d0e21e | 1057 | goto nomod; |
3280af22 | 1058 | PL_modcount++; |
a0d0e21e | 1059 | break; |
b2ffa427 | 1060 | |
79072805 | 1061 | case OP_COND_EXPR: |
11343788 | 1062 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 | 1063 | mod(kid, type); |
79072805 LW |
1064 | break; |
1065 | ||
1066 | case OP_RV2AV: | |
1067 | case OP_RV2HV: | |
11343788 | 1068 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) { |
e6438c1a | 1069 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
11343788 | 1070 | return o; /* Treat \(@foo) like ordinary list. */ |
748a9306 LW |
1071 | } |
1072 | /* FALL THROUGH */ | |
79072805 | 1073 | case OP_RV2GV: |
5dc0d613 | 1074 | if (scalar_mod_type(o, type)) |
3fe9a6f1 | 1075 | goto nomod; |
11343788 | 1076 | ref(cUNOPo->op_first, o->op_type); |
79072805 | 1077 | /* FALL THROUGH */ |
79072805 LW |
1078 | case OP_ASLICE: |
1079 | case OP_HSLICE: | |
78f9721b SM |
1080 | if (type == OP_LEAVESUBLV) |
1081 | o->op_private |= OPpMAYBE_LVSUB; | |
1082 | /* FALL THROUGH */ | |
1083 | case OP_AASSIGN: | |
93a17b20 LW |
1084 | case OP_NEXTSTATE: |
1085 | case OP_DBSTATE: | |
e6438c1a | 1086 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
79072805 | 1087 | break; |
463ee0b2 | 1088 | case OP_RV2SV: |
aeea060c | 1089 | ref(cUNOPo->op_first, o->op_type); |
463ee0b2 | 1090 | /* FALL THROUGH */ |
79072805 | 1091 | case OP_GV: |
463ee0b2 | 1092 | case OP_AV2ARYLEN: |
3280af22 | 1093 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 1094 | case OP_SASSIGN: |
bf4b1e52 GS |
1095 | case OP_ANDASSIGN: |
1096 | case OP_ORASSIGN: | |
c963b151 | 1097 | case OP_DORASSIGN: |
8990e307 | 1098 | case OP_AELEMFAST: |
3280af22 | 1099 | PL_modcount++; |
8990e307 LW |
1100 | break; |
1101 | ||
748a9306 LW |
1102 | case OP_PADAV: |
1103 | case OP_PADHV: | |
e6438c1a | 1104 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
5196be3e MB |
1105 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) |
1106 | return o; /* Treat \(@foo) like ordinary list. */ | |
1107 | if (scalar_mod_type(o, type)) | |
3fe9a6f1 | 1108 | goto nomod; |
78f9721b SM |
1109 | if (type == OP_LEAVESUBLV) |
1110 | o->op_private |= OPpMAYBE_LVSUB; | |
748a9306 LW |
1111 | /* FALL THROUGH */ |
1112 | case OP_PADSV: | |
3280af22 | 1113 | PL_modcount++; |
748a9306 | 1114 | if (!type) |
dd2155a4 DM |
1115 | { /* XXX DAPM 2002.08.25 tmp assert test */ |
1116 | /* XXX */ assert(av_fetch(PL_comppad_name, (o->op_targ), FALSE)); | |
1117 | /* XXX */ assert(*av_fetch(PL_comppad_name, (o->op_targ), FALSE)); | |
1118 | ||
cea2e8a9 | 1119 | Perl_croak(aTHX_ "Can't localize lexical variable %s", |
dd2155a4 DM |
1120 | PAD_COMPNAME_PV(o->op_targ)); |
1121 | } | |
463ee0b2 LW |
1122 | break; |
1123 | ||
748a9306 LW |
1124 | case OP_PUSHMARK: |
1125 | break; | |
b2ffa427 | 1126 | |
69969c6f SB |
1127 | case OP_KEYS: |
1128 | if (type != OP_SASSIGN) | |
1129 | goto nomod; | |
5d82c453 GA |
1130 | goto lvalue_func; |
1131 | case OP_SUBSTR: | |
1132 | if (o->op_private == 4) /* don't allow 4 arg substr as lvalue */ | |
1133 | goto nomod; | |
5f05dabc | 1134 | /* FALL THROUGH */ |
a0d0e21e | 1135 | case OP_POS: |
463ee0b2 | 1136 | case OP_VEC: |
78f9721b SM |
1137 | if (type == OP_LEAVESUBLV) |
1138 | o->op_private |= OPpMAYBE_LVSUB; | |
5d82c453 | 1139 | lvalue_func: |
11343788 MB |
1140 | pad_free(o->op_targ); |
1141 | o->op_targ = pad_alloc(o->op_type, SVs_PADMY); | |
5dc0d613 | 1142 | assert(SvTYPE(PAD_SV(o->op_targ)) == SVt_NULL); |
11343788 MB |
1143 | if (o->op_flags & OPf_KIDS) |
1144 | mod(cBINOPo->op_first->op_sibling, type); | |
463ee0b2 | 1145 | break; |
a0d0e21e | 1146 | |
463ee0b2 LW |
1147 | case OP_AELEM: |
1148 | case OP_HELEM: | |
11343788 | 1149 | ref(cBINOPo->op_first, o->op_type); |
68dc0745 | 1150 | if (type == OP_ENTERSUB && |
5dc0d613 MB |
1151 | !(o->op_private & (OPpLVAL_INTRO | OPpDEREF))) |
1152 | o->op_private |= OPpLVAL_DEFER; | |
78f9721b SM |
1153 | if (type == OP_LEAVESUBLV) |
1154 | o->op_private |= OPpMAYBE_LVSUB; | |
3280af22 | 1155 | PL_modcount++; |
463ee0b2 LW |
1156 | break; |
1157 | ||
1158 | case OP_SCOPE: | |
1159 | case OP_LEAVE: | |
1160 | case OP_ENTER: | |
78f9721b | 1161 | case OP_LINESEQ: |
11343788 MB |
1162 | if (o->op_flags & OPf_KIDS) |
1163 | mod(cLISTOPo->op_last, type); | |
a0d0e21e LW |
1164 | break; |
1165 | ||
1166 | case OP_NULL: | |
638bc118 GS |
1167 | if (o->op_flags & OPf_SPECIAL) /* do BLOCK */ |
1168 | goto nomod; | |
1169 | else if (!(o->op_flags & OPf_KIDS)) | |
463ee0b2 | 1170 | break; |
11343788 MB |
1171 | if (o->op_targ != OP_LIST) { |
1172 | mod(cBINOPo->op_first, type); | |
a0d0e21e LW |
1173 | break; |
1174 | } | |
1175 | /* FALL THROUGH */ | |
463ee0b2 | 1176 | case OP_LIST: |
11343788 | 1177 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1178 | mod(kid, type); |
1179 | break; | |
78f9721b SM |
1180 | |
1181 | case OP_RETURN: | |
1182 | if (type != OP_LEAVESUBLV) | |
1183 | goto nomod; | |
1184 | break; /* mod()ing was handled by ck_return() */ | |
463ee0b2 | 1185 | } |
58d95175 | 1186 | |
8be1be90 AMS |
1187 | /* [20011101.069] File test operators interpret OPf_REF to mean that |
1188 | their argument is a filehandle; thus \stat(".") should not set | |
1189 | it. AMS 20011102 */ | |
1190 | if (type == OP_REFGEN && | |
1191 | PL_check[o->op_type] == MEMBER_TO_FPTR(Perl_ck_ftst)) | |
1192 | return o; | |
1193 | ||
1194 | if (type != OP_LEAVESUBLV) | |
1195 | o->op_flags |= OPf_MOD; | |
1196 | ||
1197 | if (type == OP_AASSIGN || type == OP_SASSIGN) | |
1198 | o->op_flags |= OPf_SPECIAL|OPf_REF; | |
1199 | else if (!type) { | |
1200 | o->op_private |= OPpLVAL_INTRO; | |
1201 | o->op_flags &= ~OPf_SPECIAL; | |
1202 | PL_hints |= HINT_BLOCK_SCOPE; | |
463ee0b2 | 1203 | } |
8be1be90 AMS |
1204 | else if (type != OP_GREPSTART && type != OP_ENTERSUB |
1205 | && type != OP_LEAVESUBLV) | |
1206 | o->op_flags |= OPf_REF; | |
11343788 | 1207 | return o; |
463ee0b2 LW |
1208 | } |
1209 | ||
864dbfa3 | 1210 | STATIC bool |
cea2e8a9 | 1211 | S_scalar_mod_type(pTHX_ OP *o, I32 type) |
3fe9a6f1 | 1212 | { |
1213 | switch (type) { | |
1214 | case OP_SASSIGN: | |
5196be3e | 1215 | if (o->op_type == OP_RV2GV) |
3fe9a6f1 | 1216 | return FALSE; |
1217 | /* FALL THROUGH */ | |
1218 | case OP_PREINC: | |
1219 | case OP_PREDEC: | |
1220 | case OP_POSTINC: | |
1221 | case OP_POSTDEC: | |
1222 | case OP_I_PREINC: | |
1223 | case OP_I_PREDEC: | |
1224 | case OP_I_POSTINC: | |
1225 | case OP_I_POSTDEC: | |
1226 | case OP_POW: | |
1227 | case OP_MULTIPLY: | |
1228 | case OP_DIVIDE: | |
1229 | case OP_MODULO: | |
1230 | case OP_REPEAT: | |
1231 | case OP_ADD: | |
1232 | case OP_SUBTRACT: | |
1233 | case OP_I_MULTIPLY: | |
1234 | case OP_I_DIVIDE: | |
1235 | case OP_I_MODULO: | |
1236 | case OP_I_ADD: | |
1237 | case OP_I_SUBTRACT: | |
1238 | case OP_LEFT_SHIFT: | |
1239 | case OP_RIGHT_SHIFT: | |
1240 | case OP_BIT_AND: | |
1241 | case OP_BIT_XOR: | |
1242 | case OP_BIT_OR: | |
1243 | case OP_CONCAT: | |
1244 | case OP_SUBST: | |
1245 | case OP_TRANS: | |
49e9fbe6 GS |
1246 | case OP_READ: |
1247 | case OP_SYSREAD: | |
1248 | case OP_RECV: | |
bf4b1e52 GS |
1249 | case OP_ANDASSIGN: |
1250 | case OP_ORASSIGN: | |
3fe9a6f1 | 1251 | return TRUE; |
1252 | default: | |
1253 | return FALSE; | |
1254 | } | |
1255 | } | |
1256 | ||
35cd451c | 1257 | STATIC bool |
cea2e8a9 | 1258 | S_is_handle_constructor(pTHX_ OP *o, I32 argnum) |
35cd451c GS |
1259 | { |
1260 | switch (o->op_type) { | |
1261 | case OP_PIPE_OP: | |
1262 | case OP_SOCKPAIR: | |
1263 | if (argnum == 2) | |
1264 | return TRUE; | |
1265 | /* FALL THROUGH */ | |
1266 | case OP_SYSOPEN: | |
1267 | case OP_OPEN: | |
ded8aa31 | 1268 | case OP_SELECT: /* XXX c.f. SelectSaver.pm */ |
35cd451c GS |
1269 | case OP_SOCKET: |
1270 | case OP_OPEN_DIR: | |
1271 | case OP_ACCEPT: | |
1272 | if (argnum == 1) | |
1273 | return TRUE; | |
1274 | /* FALL THROUGH */ | |
1275 | default: | |
1276 | return FALSE; | |
1277 | } | |
1278 | } | |
1279 | ||
463ee0b2 | 1280 | OP * |
864dbfa3 | 1281 | Perl_refkids(pTHX_ OP *o, I32 type) |
463ee0b2 LW |
1282 | { |
1283 | OP *kid; | |
11343788 MB |
1284 | if (o && o->op_flags & OPf_KIDS) { |
1285 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
463ee0b2 LW |
1286 | ref(kid, type); |
1287 | } | |
11343788 | 1288 | return o; |
463ee0b2 LW |
1289 | } |
1290 | ||
1291 | OP * | |
864dbfa3 | 1292 | Perl_ref(pTHX_ OP *o, I32 type) |
463ee0b2 LW |
1293 | { |
1294 | OP *kid; | |
463ee0b2 | 1295 | |
3280af22 | 1296 | if (!o || PL_error_count) |
11343788 | 1297 | return o; |
463ee0b2 | 1298 | |
11343788 | 1299 | switch (o->op_type) { |
a0d0e21e | 1300 | case OP_ENTERSUB: |
afebc493 | 1301 | if ((type == OP_EXISTS || type == OP_DEFINED || type == OP_LOCK) && |
11343788 MB |
1302 | !(o->op_flags & OPf_STACKED)) { |
1303 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
22c35a8c | 1304 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 | 1305 | assert(cUNOPo->op_first->op_type == OP_NULL); |
93c66552 | 1306 | op_null(((LISTOP*)cUNOPo->op_first)->op_first); /* disable pushmark */ |
11343788 | 1307 | o->op_flags |= OPf_SPECIAL; |
8990e307 LW |
1308 | } |
1309 | break; | |
aeea060c | 1310 | |
463ee0b2 | 1311 | case OP_COND_EXPR: |
11343788 | 1312 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1313 | ref(kid, type); |
1314 | break; | |
8990e307 | 1315 | case OP_RV2SV: |
35cd451c GS |
1316 | if (type == OP_DEFINED) |
1317 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
11343788 | 1318 | ref(cUNOPo->op_first, o->op_type); |
4633a7c4 LW |
1319 | /* FALL THROUGH */ |
1320 | case OP_PADSV: | |
5f05dabc | 1321 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1322 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1323 | : type == OP_RV2HV ? OPpDEREF_HV | |
1324 | : OPpDEREF_SV); | |
11343788 | 1325 | o->op_flags |= OPf_MOD; |
a0d0e21e | 1326 | } |
8990e307 | 1327 | break; |
1c846c1f | 1328 | |
2faa37cc | 1329 | case OP_THREADSV: |
a863c7d1 MB |
1330 | o->op_flags |= OPf_MOD; /* XXX ??? */ |
1331 | break; | |
1332 | ||
463ee0b2 LW |
1333 | case OP_RV2AV: |
1334 | case OP_RV2HV: | |
aeea060c | 1335 | o->op_flags |= OPf_REF; |
8990e307 | 1336 | /* FALL THROUGH */ |
463ee0b2 | 1337 | case OP_RV2GV: |
35cd451c GS |
1338 | if (type == OP_DEFINED) |
1339 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
11343788 | 1340 | ref(cUNOPo->op_first, o->op_type); |
463ee0b2 | 1341 | break; |
8990e307 | 1342 | |
463ee0b2 LW |
1343 | case OP_PADAV: |
1344 | case OP_PADHV: | |
aeea060c | 1345 | o->op_flags |= OPf_REF; |
79072805 | 1346 | break; |
aeea060c | 1347 | |
8990e307 | 1348 | case OP_SCALAR: |
79072805 | 1349 | case OP_NULL: |
11343788 | 1350 | if (!(o->op_flags & OPf_KIDS)) |
463ee0b2 | 1351 | break; |
11343788 | 1352 | ref(cBINOPo->op_first, type); |
79072805 LW |
1353 | break; |
1354 | case OP_AELEM: | |
1355 | case OP_HELEM: | |
11343788 | 1356 | ref(cBINOPo->op_first, o->op_type); |
5f05dabc | 1357 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1358 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1359 | : type == OP_RV2HV ? OPpDEREF_HV | |
1360 | : OPpDEREF_SV); | |
11343788 | 1361 | o->op_flags |= OPf_MOD; |
8990e307 | 1362 | } |
79072805 LW |
1363 | break; |
1364 | ||
463ee0b2 | 1365 | case OP_SCOPE: |
79072805 LW |
1366 | case OP_LEAVE: |
1367 | case OP_ENTER: | |
8990e307 | 1368 | case OP_LIST: |
11343788 | 1369 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1370 | break; |
11343788 | 1371 | ref(cLISTOPo->op_last, type); |
79072805 | 1372 | break; |
a0d0e21e LW |
1373 | default: |
1374 | break; | |
79072805 | 1375 | } |
11343788 | 1376 | return scalar(o); |
8990e307 | 1377 | |
79072805 LW |
1378 | } |
1379 | ||
09bef843 SB |
1380 | STATIC OP * |
1381 | S_dup_attrlist(pTHX_ OP *o) | |
1382 | { | |
1383 | OP *rop = Nullop; | |
1384 | ||
1385 | /* An attrlist is either a simple OP_CONST or an OP_LIST with kids, | |
1386 | * where the first kid is OP_PUSHMARK and the remaining ones | |
1387 | * are OP_CONST. We need to push the OP_CONST values. | |
1388 | */ | |
1389 | if (o->op_type == OP_CONST) | |
1390 | rop = newSVOP(OP_CONST, o->op_flags, SvREFCNT_inc(cSVOPo->op_sv)); | |
1391 | else { | |
1392 | assert((o->op_type == OP_LIST) && (o->op_flags & OPf_KIDS)); | |
1393 | for (o = cLISTOPo->op_first; o; o=o->op_sibling) { | |
1394 | if (o->op_type == OP_CONST) | |
1395 | rop = append_elem(OP_LIST, rop, | |
1396 | newSVOP(OP_CONST, o->op_flags, | |
1397 | SvREFCNT_inc(cSVOPo->op_sv))); | |
1398 | } | |
1399 | } | |
1400 | return rop; | |
1401 | } | |
1402 | ||
1403 | STATIC void | |
95f0a2f1 | 1404 | S_apply_attrs(pTHX_ HV *stash, SV *target, OP *attrs, bool for_my) |
09bef843 | 1405 | { |
09bef843 SB |
1406 | SV *stashsv; |
1407 | ||
1408 | /* fake up C<use attributes $pkg,$rv,@attrs> */ | |
1409 | ENTER; /* need to protect against side-effects of 'use' */ | |
1410 | SAVEINT(PL_expect); | |
a9164de8 | 1411 | if (stash) |
09bef843 SB |
1412 | stashsv = newSVpv(HvNAME(stash), 0); |
1413 | else | |
1414 | stashsv = &PL_sv_no; | |
e4783991 | 1415 | |
09bef843 | 1416 | #define ATTRSMODULE "attributes" |
95f0a2f1 SB |
1417 | #define ATTRSMODULE_PM "attributes.pm" |
1418 | ||
1419 | if (for_my) { | |
1420 | SV **svp; | |
1421 | /* Don't force the C<use> if we don't need it. */ | |
1422 | svp = hv_fetch(GvHVn(PL_incgv), ATTRSMODULE_PM, | |
1423 | sizeof(ATTRSMODULE_PM)-1, 0); | |
1424 | if (svp && *svp != &PL_sv_undef) | |
1425 | ; /* already in %INC */ | |
1426 | else | |
1427 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, | |
1428 | newSVpvn(ATTRSMODULE, sizeof(ATTRSMODULE)-1), | |
1429 | Nullsv); | |
1430 | } | |
1431 | else { | |
1432 | Perl_load_module(aTHX_ PERL_LOADMOD_IMPORT_OPS, | |
1433 | newSVpvn(ATTRSMODULE, sizeof(ATTRSMODULE)-1), | |
1434 | Nullsv, | |
1435 | prepend_elem(OP_LIST, | |
1436 | newSVOP(OP_CONST, 0, stashsv), | |
1437 | prepend_elem(OP_LIST, | |
1438 | newSVOP(OP_CONST, 0, | |
1439 | newRV(target)), | |
1440 | dup_attrlist(attrs)))); | |
1441 | } | |
09bef843 SB |
1442 | LEAVE; |
1443 | } | |
1444 | ||
95f0a2f1 SB |
1445 | STATIC void |
1446 | S_apply_attrs_my(pTHX_ HV *stash, OP *target, OP *attrs, OP **imopsp) | |
1447 | { | |
1448 | OP *pack, *imop, *arg; | |
1449 | SV *meth, *stashsv; | |
1450 | ||
1451 | if (!attrs) | |
1452 | return; | |
1453 | ||
1454 | assert(target->op_type == OP_PADSV || | |
1455 | target->op_type == OP_PADHV || | |
1456 | target->op_type == OP_PADAV); | |
1457 | ||
1458 | /* Ensure that attributes.pm is loaded. */ | |
dd2155a4 | 1459 | apply_attrs(stash, PAD_SV(target->op_targ), attrs, TRUE); |
95f0a2f1 SB |
1460 | |
1461 | /* Need package name for method call. */ | |
1462 | pack = newSVOP(OP_CONST, 0, newSVpvn(ATTRSMODULE, sizeof(ATTRSMODULE)-1)); | |
1463 | ||
1464 | /* Build up the real arg-list. */ | |
1465 | if (stash) | |
1466 | stashsv = newSVpv(HvNAME(stash), 0); | |
1467 | else | |
1468 | stashsv = &PL_sv_no; | |
1469 | arg = newOP(OP_PADSV, 0); | |
1470 | arg->op_targ = target->op_targ; | |
1471 | arg = prepend_elem(OP_LIST, | |
1472 | newSVOP(OP_CONST, 0, stashsv), | |
1473 | prepend_elem(OP_LIST, | |
1474 | newUNOP(OP_REFGEN, 0, | |
1475 | mod(arg, OP_REFGEN)), | |
1476 | dup_attrlist(attrs))); | |
1477 | ||
1478 | /* Fake up a method call to import */ | |
1479 | meth = newSVpvn("import", 6); | |
1480 | (void)SvUPGRADE(meth, SVt_PVIV); | |
1481 | (void)SvIOK_on(meth); | |
5afd6d42 | 1482 | PERL_HASH(SvUVX(meth), SvPVX(meth), SvCUR(meth)); |
95f0a2f1 SB |
1483 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL|OPf_WANT_VOID, |
1484 | append_elem(OP_LIST, | |
1485 | prepend_elem(OP_LIST, pack, list(arg)), | |
1486 | newSVOP(OP_METHOD_NAMED, 0, meth))); | |
1487 | imop->op_private |= OPpENTERSUB_NOMOD; | |
1488 | ||
1489 | /* Combine the ops. */ | |
1490 | *imopsp = append_elem(OP_LIST, *imopsp, imop); | |
1491 | } | |
1492 | ||
1493 | /* | |
1494 | =notfor apidoc apply_attrs_string | |
1495 | ||
1496 | Attempts to apply a list of attributes specified by the C<attrstr> and | |
1497 | C<len> arguments to the subroutine identified by the C<cv> argument which | |
1498 | is expected to be associated with the package identified by the C<stashpv> | |
1499 | argument (see L<attributes>). It gets this wrong, though, in that it | |
1500 | does not correctly identify the boundaries of the individual attribute | |
1501 | specifications within C<attrstr>. This is not really intended for the | |
1502 | public API, but has to be listed here for systems such as AIX which | |
1503 | need an explicit export list for symbols. (It's called from XS code | |
1504 | in support of the C<ATTRS:> keyword from F<xsubpp>.) Patches to fix it | |
1505 | to respect attribute syntax properly would be welcome. | |
1506 | ||
1507 | =cut | |
1508 | */ | |
1509 | ||
be3174d2 GS |
1510 | void |
1511 | Perl_apply_attrs_string(pTHX_ char *stashpv, CV *cv, | |
1512 | char *attrstr, STRLEN len) | |
1513 | { | |
1514 | OP *attrs = Nullop; | |
1515 | ||
1516 | if (!len) { | |
1517 | len = strlen(attrstr); | |
1518 | } | |
1519 | ||
1520 | while (len) { | |
1521 | for (; isSPACE(*attrstr) && len; --len, ++attrstr) ; | |
1522 | if (len) { | |
1523 | char *sstr = attrstr; | |
1524 | for (; !isSPACE(*attrstr) && len; --len, ++attrstr) ; | |
1525 | attrs = append_elem(OP_LIST, attrs, | |
1526 | newSVOP(OP_CONST, 0, | |
1527 | newSVpvn(sstr, attrstr-sstr))); | |
1528 | } | |
1529 | } | |
1530 | ||
1531 | Perl_load_module(aTHX_ PERL_LOADMOD_IMPORT_OPS, | |
1532 | newSVpvn(ATTRSMODULE, sizeof(ATTRSMODULE)-1), | |
1533 | Nullsv, prepend_elem(OP_LIST, | |
1534 | newSVOP(OP_CONST, 0, newSVpv(stashpv,0)), | |
1535 | prepend_elem(OP_LIST, | |
1536 | newSVOP(OP_CONST, 0, | |
1537 | newRV((SV*)cv)), | |
1538 | attrs))); | |
1539 | } | |
1540 | ||
09bef843 | 1541 | STATIC OP * |
95f0a2f1 | 1542 | S_my_kid(pTHX_ OP *o, OP *attrs, OP **imopsp) |
93a17b20 LW |
1543 | { |
1544 | OP *kid; | |
93a17b20 LW |
1545 | I32 type; |
1546 | ||
3280af22 | 1547 | if (!o || PL_error_count) |
11343788 | 1548 | return o; |
93a17b20 | 1549 | |
11343788 | 1550 | type = o->op_type; |
93a17b20 | 1551 | if (type == OP_LIST) { |
11343788 | 1552 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
95f0a2f1 | 1553 | my_kid(kid, attrs, imopsp); |
dab48698 | 1554 | } else if (type == OP_UNDEF) { |
7766148a | 1555 | return o; |
77ca0c92 LW |
1556 | } else if (type == OP_RV2SV || /* "our" declaration */ |
1557 | type == OP_RV2AV || | |
1558 | type == OP_RV2HV) { /* XXX does this let anything illegal in? */ | |
1ce0b88c RGS |
1559 | if (cUNOPo->op_first->op_type != OP_GV) { /* MJD 20011224 */ |
1560 | yyerror(Perl_form(aTHX_ "Can't declare %s in %s", | |
1561 | OP_DESC(o), PL_in_my == KEY_our ? "our" : "my")); | |
1562 | } else if (attrs) { | |
1563 | GV *gv = cGVOPx_gv(cUNOPo->op_first); | |
1564 | PL_in_my = FALSE; | |
1565 | PL_in_my_stash = Nullhv; | |
1566 | apply_attrs(GvSTASH(gv), | |
1567 | (type == OP_RV2SV ? GvSV(gv) : | |
1568 | type == OP_RV2AV ? (SV*)GvAV(gv) : | |
1569 | type == OP_RV2HV ? (SV*)GvHV(gv) : (SV*)gv), | |
1570 | attrs, FALSE); | |
1571 | } | |
192587c2 | 1572 | o->op_private |= OPpOUR_INTRO; |
77ca0c92 | 1573 | return o; |
95f0a2f1 SB |
1574 | } |
1575 | else if (type != OP_PADSV && | |
93a17b20 LW |
1576 | type != OP_PADAV && |
1577 | type != OP_PADHV && | |
1578 | type != OP_PUSHMARK) | |
1579 | { | |
eb64745e | 1580 | yyerror(Perl_form(aTHX_ "Can't declare %s in \"%s\"", |
53e06cf0 | 1581 | OP_DESC(o), |
eb64745e | 1582 | PL_in_my == KEY_our ? "our" : "my")); |
11343788 | 1583 | return o; |
93a17b20 | 1584 | } |
09bef843 SB |
1585 | else if (attrs && type != OP_PUSHMARK) { |
1586 | HV *stash; | |
09bef843 | 1587 | |
eb64745e GS |
1588 | PL_in_my = FALSE; |
1589 | PL_in_my_stash = Nullhv; | |
1590 | ||
09bef843 | 1591 | /* check for C<my Dog $spot> when deciding package */ |
dd2155a4 DM |
1592 | stash = PAD_COMPNAME_TYPE(o->op_targ); |
1593 | if (!stash) | |
09bef843 | 1594 | stash = PL_curstash; |
95f0a2f1 | 1595 | apply_attrs_my(stash, o, attrs, imopsp); |
09bef843 | 1596 | } |
11343788 MB |
1597 | o->op_flags |= OPf_MOD; |
1598 | o->op_private |= OPpLVAL_INTRO; | |
1599 | return o; | |
93a17b20 LW |
1600 | } |
1601 | ||
1602 | OP * | |
09bef843 SB |
1603 | Perl_my_attrs(pTHX_ OP *o, OP *attrs) |
1604 | { | |
95f0a2f1 SB |
1605 | OP *rops = Nullop; |
1606 | int maybe_scalar = 0; | |
1607 | ||
d2be0de5 | 1608 | /* [perl #17376]: this appears to be premature, and results in code such as |
c754c3d7 | 1609 | C< our(%x); > executing in list mode rather than void mode */ |
d2be0de5 | 1610 | #if 0 |
09bef843 SB |
1611 | if (o->op_flags & OPf_PARENS) |
1612 | list(o); | |
95f0a2f1 SB |
1613 | else |
1614 | maybe_scalar = 1; | |
d2be0de5 YST |
1615 | #else |
1616 | maybe_scalar = 1; | |
1617 | #endif | |
09bef843 SB |
1618 | if (attrs) |
1619 | SAVEFREEOP(attrs); | |
95f0a2f1 SB |
1620 | o = my_kid(o, attrs, &rops); |
1621 | if (rops) { | |
1622 | if (maybe_scalar && o->op_type == OP_PADSV) { | |
1623 | o = scalar(append_list(OP_LIST, (LISTOP*)rops, (LISTOP*)o)); | |
1624 | o->op_private |= OPpLVAL_INTRO; | |
1625 | } | |
1626 | else | |
1627 | o = append_list(OP_LIST, (LISTOP*)o, (LISTOP*)rops); | |
1628 | } | |
eb64745e GS |
1629 | PL_in_my = FALSE; |
1630 | PL_in_my_stash = Nullhv; | |
1631 | return o; | |
09bef843 SB |
1632 | } |
1633 | ||
1634 | OP * | |
1635 | Perl_my(pTHX_ OP *o) | |
1636 | { | |
95f0a2f1 | 1637 | return my_attrs(o, Nullop); |
09bef843 SB |
1638 | } |
1639 | ||
1640 | OP * | |
864dbfa3 | 1641 | Perl_sawparens(pTHX_ OP *o) |
79072805 LW |
1642 | { |
1643 | if (o) | |
1644 | o->op_flags |= OPf_PARENS; | |
1645 | return o; | |
1646 | } | |
1647 | ||
1648 | OP * | |
864dbfa3 | 1649 | Perl_bind_match(pTHX_ I32 type, OP *left, OP *right) |
79072805 | 1650 | { |
11343788 | 1651 | OP *o; |
79072805 | 1652 | |
e476b1b5 | 1653 | if (ckWARN(WARN_MISC) && |
599cee73 PM |
1654 | (left->op_type == OP_RV2AV || |
1655 | left->op_type == OP_RV2HV || | |
1656 | left->op_type == OP_PADAV || | |
1657 | left->op_type == OP_PADHV)) { | |
22c35a8c | 1658 | char *desc = PL_op_desc[(right->op_type == OP_SUBST || |
599cee73 PM |
1659 | right->op_type == OP_TRANS) |
1660 | ? right->op_type : OP_MATCH]; | |
dff6d3cd GS |
1661 | const char *sample = ((left->op_type == OP_RV2AV || |
1662 | left->op_type == OP_PADAV) | |
1663 | ? "@array" : "%hash"); | |
9014280d | 1664 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
1c846c1f | 1665 | "Applying %s to %s will act on scalar(%s)", |
599cee73 | 1666 | desc, sample, sample); |
2ae324a7 | 1667 | } |
1668 | ||
5cc9e5c9 RH |
1669 | if (right->op_type == OP_CONST && |
1670 | cSVOPx(right)->op_private & OPpCONST_BARE && | |
1671 | cSVOPx(right)->op_private & OPpCONST_STRICT) | |
1672 | { | |
1673 | no_bareword_allowed(right); | |
1674 | } | |
1675 | ||
de4bf5b3 MG |
1676 | if (!(right->op_flags & OPf_STACKED) && |
1677 | (right->op_type == OP_MATCH || | |
79072805 | 1678 | right->op_type == OP_SUBST || |
de4bf5b3 | 1679 | right->op_type == OP_TRANS)) { |
79072805 | 1680 | right->op_flags |= OPf_STACKED; |
18808301 JH |
1681 | if (right->op_type != OP_MATCH && |
1682 | ! (right->op_type == OP_TRANS && | |
1683 | right->op_private & OPpTRANS_IDENTICAL)) | |
463ee0b2 | 1684 | left = mod(left, right->op_type); |
79072805 | 1685 | if (right->op_type == OP_TRANS) |
11343788 | 1686 | o = newBINOP(OP_NULL, OPf_STACKED, scalar(left), right); |
79072805 | 1687 | else |
11343788 | 1688 | o = prepend_elem(right->op_type, scalar(left), right); |
79072805 | 1689 | if (type == OP_NOT) |
11343788 MB |
1690 | return newUNOP(OP_NOT, 0, scalar(o)); |
1691 | return o; | |
79072805 LW |
1692 | } |
1693 | else | |
1694 | return bind_match(type, left, | |
1695 | pmruntime(newPMOP(OP_MATCH, 0), right, Nullop)); | |
1696 | } | |
1697 | ||
1698 | OP * | |
864dbfa3 | 1699 | Perl_invert(pTHX_ OP *o) |
79072805 | 1700 | { |
11343788 MB |
1701 | if (!o) |
1702 | return o; | |
79072805 | 1703 | /* XXX need to optimize away NOT NOT here? Or do we let optimizer do it? */ |
11343788 | 1704 | return newUNOP(OP_NOT, OPf_SPECIAL, scalar(o)); |
79072805 LW |
1705 | } |
1706 | ||
1707 | OP * | |
864dbfa3 | 1708 | Perl_scope(pTHX_ OP *o) |
79072805 LW |
1709 | { |
1710 | if (o) { | |
3280af22 | 1711 | if (o->op_flags & OPf_PARENS || PERLDB_NOOPT || PL_tainting) { |
463ee0b2 LW |
1712 | o = prepend_elem(OP_LINESEQ, newOP(OP_ENTER, 0), o); |
1713 | o->op_type = OP_LEAVE; | |
22c35a8c | 1714 | o->op_ppaddr = PL_ppaddr[OP_LEAVE]; |
463ee0b2 | 1715 | } |
fdb22418 HS |
1716 | else if (o->op_type == OP_LINESEQ) { |
1717 | OP *kid; | |
1718 | o->op_type = OP_SCOPE; | |
1719 | o->op_ppaddr = PL_ppaddr[OP_SCOPE]; | |
1720 | kid = ((LISTOP*)o)->op_first; | |
1721 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) | |
1722 | op_null(kid); | |
463ee0b2 | 1723 | } |
fdb22418 HS |
1724 | else |
1725 | o = newLISTOP(OP_SCOPE, 0, o, Nullop); | |
79072805 LW |
1726 | } |
1727 | return o; | |
1728 | } | |
1729 | ||
b3ac6de7 | 1730 | void |
864dbfa3 | 1731 | Perl_save_hints(pTHX) |
b3ac6de7 | 1732 | { |
3280af22 NIS |
1733 | SAVEI32(PL_hints); |
1734 | SAVESPTR(GvHV(PL_hintgv)); | |
1735 | GvHV(PL_hintgv) = newHVhv(GvHV(PL_hintgv)); | |
1736 | SAVEFREESV(GvHV(PL_hintgv)); | |
b3ac6de7 IZ |
1737 | } |
1738 | ||
a0d0e21e | 1739 | int |
864dbfa3 | 1740 | Perl_block_start(pTHX_ int full) |
79072805 | 1741 | { |
3280af22 | 1742 | int retval = PL_savestack_ix; |
39aa8287 RGS |
1743 | /* If there were syntax errors, don't try to start a block */ |
1744 | if (PL_yynerrs) return retval; | |
b3ac6de7 | 1745 | |
dd2155a4 | 1746 | pad_block_start(full); |
b3ac6de7 | 1747 | SAVEHINTS(); |
3280af22 | 1748 | PL_hints &= ~HINT_BLOCK_SCOPE; |
1c846c1f | 1749 | SAVESPTR(PL_compiling.cop_warnings); |
0453d815 | 1750 | if (! specialWARN(PL_compiling.cop_warnings)) { |
599cee73 PM |
1751 | PL_compiling.cop_warnings = newSVsv(PL_compiling.cop_warnings) ; |
1752 | SAVEFREESV(PL_compiling.cop_warnings) ; | |
1753 | } | |
ac27b0f5 NIS |
1754 | SAVESPTR(PL_compiling.cop_io); |
1755 | if (! specialCopIO(PL_compiling.cop_io)) { | |
1756 | PL_compiling.cop_io = newSVsv(PL_compiling.cop_io) ; | |
1757 | SAVEFREESV(PL_compiling.cop_io) ; | |
1758 | } | |
a0d0e21e LW |
1759 | return retval; |
1760 | } | |
1761 | ||
1762 | OP* | |
864dbfa3 | 1763 | Perl_block_end(pTHX_ I32 floor, OP *seq) |
a0d0e21e | 1764 | { |
3280af22 | 1765 | int needblockscope = PL_hints & HINT_BLOCK_SCOPE; |
e9f19e3c | 1766 | OP* retval = scalarseq(seq); |
39aa8287 RGS |
1767 | /* If there were syntax errors, don't try to close a block */ |
1768 | if (PL_yynerrs) return retval; | |
e9818f4e | 1769 | LEAVE_SCOPE(floor); |
eb160463 | 1770 | PL_compiling.op_private = (U8)(PL_hints & HINT_PRIVATE_MASK); |
a0d0e21e | 1771 | if (needblockscope) |
3280af22 | 1772 | PL_hints |= HINT_BLOCK_SCOPE; /* propagate out */ |
dd2155a4 | 1773 | pad_leavemy(); |
a0d0e21e LW |
1774 | return retval; |
1775 | } | |
1776 | ||
76e3520e | 1777 | STATIC OP * |
cea2e8a9 | 1778 | S_newDEFSVOP(pTHX) |
54b9620d | 1779 | { |
3280af22 | 1780 | return newSVREF(newGVOP(OP_GV, 0, PL_defgv)); |
54b9620d MB |
1781 | } |
1782 | ||
a0d0e21e | 1783 | void |
864dbfa3 | 1784 | Perl_newPROG(pTHX_ OP *o) |
a0d0e21e | 1785 | { |
3280af22 | 1786 | if (PL_in_eval) { |
b295d113 TH |
1787 | if (PL_eval_root) |
1788 | return; | |
faef0170 HS |
1789 | PL_eval_root = newUNOP(OP_LEAVEEVAL, |
1790 | ((PL_in_eval & EVAL_KEEPERR) | |
1791 | ? OPf_SPECIAL : 0), o); | |
3280af22 | 1792 | PL_eval_start = linklist(PL_eval_root); |
7934575e GS |
1793 | PL_eval_root->op_private |= OPpREFCOUNTED; |
1794 | OpREFCNT_set(PL_eval_root, 1); | |
3280af22 | 1795 | PL_eval_root->op_next = 0; |
a2efc822 | 1796 | CALL_PEEP(PL_eval_start); |
a0d0e21e LW |
1797 | } |
1798 | else { | |
f52873be | 1799 | if (o->op_type == OP_STUB) |
a0d0e21e | 1800 | return; |
3280af22 NIS |
1801 | PL_main_root = scope(sawparens(scalarvoid(o))); |
1802 | PL_curcop = &PL_compiling; | |
1803 | PL_main_start = LINKLIST(PL_main_root); | |
7934575e GS |
1804 | PL_main_root->op_private |= OPpREFCOUNTED; |
1805 | OpREFCNT_set(PL_main_root, 1); | |
3280af22 | 1806 | PL_main_root->op_next = 0; |
a2efc822 | 1807 | CALL_PEEP(PL_main_start); |
3280af22 | 1808 | PL_compcv = 0; |
3841441e | 1809 | |
4fdae800 | 1810 | /* Register with debugger */ |
84902520 | 1811 | if (PERLDB_INTER) { |
864dbfa3 | 1812 | CV *cv = get_cv("DB::postponed", FALSE); |
3841441e CS |
1813 | if (cv) { |
1814 | dSP; | |
924508f0 | 1815 | PUSHMARK(SP); |
cc49e20b | 1816 | XPUSHs((SV*)CopFILEGV(&PL_compiling)); |
3841441e | 1817 | PUTBACK; |
864dbfa3 | 1818 | call_sv((SV*)cv, G_DISCARD); |
3841441e CS |
1819 | } |
1820 | } | |
79072805 | 1821 | } |
79072805 LW |
1822 | } |
1823 | ||
1824 | OP * | |
864dbfa3 | 1825 | Perl_localize(pTHX_ OP *o, I32 lex) |
79072805 LW |
1826 | { |
1827 | if (o->op_flags & OPf_PARENS) | |
d2be0de5 YST |
1828 | /* [perl #17376]: this appears to be premature, and results in code such as |
1829 | C< our(%x); > executing in list mode rather than void mode */ | |
1830 | #if 0 | |
79072805 | 1831 | list(o); |
d2be0de5 YST |
1832 | #else |
1833 | ; | |
1834 | #endif | |
8990e307 | 1835 | else { |
64420d0d JH |
1836 | if (ckWARN(WARN_PARENTHESIS) |
1837 | && PL_bufptr > PL_oldbufptr && PL_bufptr[-1] == ',') | |
1838 | { | |
1839 | char *s = PL_bufptr; | |
1840 | ||
1841 | while (*s && (isALNUM(*s) || UTF8_IS_CONTINUED(*s) || strchr("@$%, ", *s))) | |
1842 | s++; | |
1843 | ||
a0d0e21e | 1844 | if (*s == ';' || *s == '=') |
9014280d | 1845 | Perl_warner(aTHX_ packWARN(WARN_PARENTHESIS), |
eb64745e GS |
1846 | "Parentheses missing around \"%s\" list", |
1847 | lex ? (PL_in_my == KEY_our ? "our" : "my") : "local"); | |
8990e307 LW |
1848 | } |
1849 | } | |
93a17b20 | 1850 | if (lex) |
eb64745e | 1851 | o = my(o); |
93a17b20 | 1852 | else |
eb64745e GS |
1853 | o = mod(o, OP_NULL); /* a bit kludgey */ |
1854 | PL_in_my = FALSE; | |
1855 | PL_in_my_stash = Nullhv; | |
1856 | return o; | |
79072805 LW |
1857 | } |
1858 | ||
1859 | OP * | |
864dbfa3 | 1860 | Perl_jmaybe(pTHX_ OP *o) |
79072805 LW |
1861 | { |
1862 | if (o->op_type == OP_LIST) { | |
554b3eca | 1863 | OP *o2; |
554b3eca | 1864 | o2 = newSVREF(newGVOP(OP_GV, 0, gv_fetchpv(";", TRUE, SVt_PV))), |
554b3eca | 1865 | o = convert(OP_JOIN, 0, prepend_elem(OP_LIST, o2, o)); |
79072805 LW |
1866 | } |
1867 | return o; | |
1868 | } | |
1869 | ||
1870 | OP * | |
864dbfa3 | 1871 | Perl_fold_constants(pTHX_ register OP *o) |
79072805 LW |
1872 | { |
1873 | register OP *curop; | |
1874 | I32 type = o->op_type; | |
748a9306 | 1875 | SV *sv; |
79072805 | 1876 | |
22c35a8c | 1877 | if (PL_opargs[type] & OA_RETSCALAR) |
79072805 | 1878 | scalar(o); |
b162f9ea | 1879 | if (PL_opargs[type] & OA_TARGET && !o->op_targ) |
ed6116ce | 1880 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 | 1881 | |
eac055e9 GS |
1882 | /* integerize op, unless it happens to be C<-foo>. |
1883 | * XXX should pp_i_negate() do magic string negation instead? */ | |
1884 | if ((PL_opargs[type] & OA_OTHERINT) && (PL_hints & HINT_INTEGER) | |
1885 | && !(type == OP_NEGATE && cUNOPo->op_first->op_type == OP_CONST | |
1886 | && (cUNOPo->op_first->op_private & OPpCONST_BARE))) | |
1887 | { | |
22c35a8c | 1888 | o->op_ppaddr = PL_ppaddr[type = ++(o->op_type)]; |
eac055e9 | 1889 | } |
85e6fe83 | 1890 | |
22c35a8c | 1891 | if (!(PL_opargs[type] & OA_FOLDCONST)) |
79072805 LW |
1892 | goto nope; |
1893 | ||
de939608 | 1894 | switch (type) { |
7a52d87a GS |
1895 | case OP_NEGATE: |
1896 | /* XXX might want a ck_negate() for this */ | |
1897 | cUNOPo->op_first->op_private &= ~OPpCONST_STRICT; | |
1898 | break; | |
de939608 CS |
1899 | case OP_SPRINTF: |
1900 | case OP_UCFIRST: | |
1901 | case OP_LCFIRST: | |
1902 | case OP_UC: | |
1903 | case OP_LC: | |
69dcf70c MB |
1904 | case OP_SLT: |
1905 | case OP_SGT: | |
1906 | case OP_SLE: | |
1907 | case OP_SGE: | |
1908 | case OP_SCMP: | |
2de3dbcc JH |
1909 | /* XXX what about the numeric ops? */ |
1910 | if (PL_hints & HINT_LOCALE) | |
de939608 CS |
1911 | goto nope; |
1912 | } | |
1913 | ||
3280af22 | 1914 | if (PL_error_count) |
a0d0e21e LW |
1915 | goto nope; /* Don't try to run w/ errors */ |
1916 | ||
79072805 | 1917 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
11fa937b GS |
1918 | if ((curop->op_type != OP_CONST || |
1919 | (curop->op_private & OPpCONST_BARE)) && | |
7a52d87a GS |
1920 | curop->op_type != OP_LIST && |
1921 | curop->op_type != OP_SCALAR && | |
1922 | curop->op_type != OP_NULL && | |
1923 | curop->op_type != OP_PUSHMARK) | |
1924 | { | |
79072805 LW |
1925 | goto nope; |
1926 | } | |
1927 | } | |
1928 | ||
1929 | curop = LINKLIST(o); | |
1930 | o->op_next = 0; | |
533c011a | 1931 | PL_op = curop; |
cea2e8a9 | 1932 | CALLRUNOPS(aTHX); |
3280af22 | 1933 | sv = *(PL_stack_sp--); |
748a9306 | 1934 | if (o->op_targ && sv == PAD_SV(o->op_targ)) /* grab pad temp? */ |
dd2155a4 | 1935 | pad_swipe(o->op_targ, FALSE); |
748a9306 LW |
1936 | else if (SvTEMP(sv)) { /* grab mortal temp? */ |
1937 | (void)SvREFCNT_inc(sv); | |
1938 | SvTEMP_off(sv); | |
85e6fe83 | 1939 | } |
79072805 LW |
1940 | op_free(o); |
1941 | if (type == OP_RV2GV) | |
b1cb66bf | 1942 | return newGVOP(OP_GV, 0, (GV*)sv); |
52a96ae6 | 1943 | return newSVOP(OP_CONST, 0, sv); |
aeea060c | 1944 | |
79072805 | 1945 | nope: |
79072805 LW |
1946 | return o; |
1947 | } | |
1948 | ||
1949 | OP * | |
864dbfa3 | 1950 | Perl_gen_constant_list(pTHX_ register OP *o) |
79072805 LW |
1951 | { |
1952 | register OP *curop; | |
3280af22 | 1953 | I32 oldtmps_floor = PL_tmps_floor; |
79072805 | 1954 | |
a0d0e21e | 1955 | list(o); |
3280af22 | 1956 | if (PL_error_count) |
a0d0e21e LW |
1957 | return o; /* Don't attempt to run with errors */ |
1958 | ||
533c011a | 1959 | PL_op = curop = LINKLIST(o); |
a0d0e21e | 1960 | o->op_next = 0; |
a2efc822 | 1961 | CALL_PEEP(curop); |
cea2e8a9 GS |
1962 | pp_pushmark(); |
1963 | CALLRUNOPS(aTHX); | |
533c011a | 1964 | PL_op = curop; |
cea2e8a9 | 1965 | pp_anonlist(); |
3280af22 | 1966 | PL_tmps_floor = oldtmps_floor; |
79072805 LW |
1967 | |
1968 | o->op_type = OP_RV2AV; | |
22c35a8c | 1969 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
c13f253a | 1970 | o->op_seq = 0; /* needs to be revisited in peep() */ |
79072805 | 1971 | curop = ((UNOP*)o)->op_first; |
3280af22 | 1972 | ((UNOP*)o)->op_first = newSVOP(OP_CONST, 0, SvREFCNT_inc(*PL_stack_sp--)); |
79072805 | 1973 | op_free(curop); |
79072805 LW |
1974 | linklist(o); |
1975 | return list(o); | |
1976 | } | |
1977 | ||
1978 | OP * | |
864dbfa3 | 1979 | Perl_convert(pTHX_ I32 type, I32 flags, OP *o) |
79072805 | 1980 | { |
11343788 MB |
1981 | if (!o || o->op_type != OP_LIST) |
1982 | o = newLISTOP(OP_LIST, 0, o, Nullop); | |
748a9306 | 1983 | else |
5dc0d613 | 1984 | o->op_flags &= ~OPf_WANT; |
79072805 | 1985 | |
22c35a8c | 1986 | if (!(PL_opargs[type] & OA_MARK)) |
93c66552 | 1987 | op_null(cLISTOPo->op_first); |
8990e307 | 1988 | |
eb160463 | 1989 | o->op_type = (OPCODE)type; |
22c35a8c | 1990 | o->op_ppaddr = PL_ppaddr[type]; |
11343788 | 1991 | o->op_flags |= flags; |
79072805 | 1992 | |
11343788 MB |
1993 | o = CHECKOP(type, o); |
1994 | if (o->op_type != type) | |
1995 | return o; | |
79072805 | 1996 | |
11343788 | 1997 | return fold_constants(o); |
79072805 LW |
1998 | } |
1999 | ||
2000 | /* List constructors */ | |
2001 | ||
2002 | OP * | |
864dbfa3 | 2003 | Perl_append_elem(pTHX_ I32 type, OP *first, OP *last) |
79072805 LW |
2004 | { |
2005 | if (!first) | |
2006 | return last; | |
8990e307 LW |
2007 | |
2008 | if (!last) | |
79072805 | 2009 | return first; |
8990e307 | 2010 | |
155aba94 GS |
2011 | if (first->op_type != type |
2012 | || (type == OP_LIST && (first->op_flags & OPf_PARENS))) | |
2013 | { | |
2014 | return newLISTOP(type, 0, first, last); | |
2015 | } | |
79072805 | 2016 | |
a0d0e21e LW |
2017 | if (first->op_flags & OPf_KIDS) |
2018 | ((LISTOP*)first)->op_last->op_sibling = last; | |
2019 | else { | |
2020 | first->op_flags |= OPf_KIDS; | |
2021 | ((LISTOP*)first)->op_first = last; | |
2022 | } | |
2023 | ((LISTOP*)first)->op_last = last; | |
a0d0e21e | 2024 | return first; |
79072805 LW |
2025 | } |
2026 | ||
2027 | OP * | |
864dbfa3 | 2028 | Perl_append_list(pTHX_ I32 type, LISTOP *first, LISTOP *last) |
79072805 LW |
2029 | { |
2030 | if (!first) | |
2031 | return (OP*)last; | |
8990e307 LW |
2032 | |
2033 | if (!last) | |
79072805 | 2034 | return (OP*)first; |
8990e307 LW |
2035 | |
2036 | if (first->op_type != type) | |
79072805 | 2037 | return prepend_elem(type, (OP*)first, (OP*)last); |
8990e307 LW |
2038 | |
2039 | if (last->op_type != type) | |
79072805 LW |
2040 | return append_elem(type, (OP*)first, (OP*)last); |
2041 | ||
2042 | first->op_last->op_sibling = last->op_first; | |
2043 | first->op_last = last->op_last; | |
117dada2 | 2044 | first->op_flags |= (last->op_flags & OPf_KIDS); |
1c846c1f | 2045 | |
238a4c30 NIS |
2046 | FreeOp(last); |
2047 | ||
79072805 LW |
2048 | return (OP*)first; |
2049 | } | |
2050 | ||
2051 | OP * | |
864dbfa3 | 2052 | Perl_prepend_elem(pTHX_ I32 type, OP *first, OP *last) |
79072805 LW |
2053 | { |
2054 | if (!first) | |
2055 | return last; | |
8990e307 LW |
2056 | |
2057 | if (!last) | |
79072805 | 2058 | return first; |
8990e307 LW |
2059 | |
2060 | if (last->op_type == type) { | |
2061 | if (type == OP_LIST) { /* already a PUSHMARK there */ | |
2062 | first->op_sibling = ((LISTOP*)last)->op_first->op_sibling; | |
2063 | ((LISTOP*)last)->op_first->op_sibling = first; | |
36a5d4ba DC |
2064 | if (!(first->op_flags & OPf_PARENS)) |
2065 | last->op_flags &= ~OPf_PARENS; | |
8990e307 LW |
2066 | } |
2067 | else { | |
2068 | if (!(last->op_flags & OPf_KIDS)) { | |
2069 | ((LISTOP*)last)->op_last = first; | |
2070 | last->op_flags |= OPf_KIDS; | |
2071 | } | |
2072 | first->op_sibling = ((LISTOP*)last)->op_first; | |
2073 | ((LISTOP*)last)->op_first = first; | |
79072805 | 2074 | } |
117dada2 | 2075 | last->op_flags |= OPf_KIDS; |
79072805 LW |
2076 | return last; |
2077 | } | |
2078 | ||
2079 | return newLISTOP(type, 0, first, last); | |
2080 | } | |
2081 | ||
2082 | /* Constructors */ | |
2083 | ||
2084 | OP * | |
864dbfa3 | 2085 | Perl_newNULLLIST(pTHX) |
79072805 | 2086 | { |
8990e307 LW |
2087 | return newOP(OP_STUB, 0); |
2088 | } | |
2089 | ||
2090 | OP * | |
864dbfa3 | 2091 | Perl_force_list(pTHX_ OP *o) |
8990e307 | 2092 | { |
11343788 MB |
2093 | if (!o || o->op_type != OP_LIST) |
2094 | o = newLISTOP(OP_LIST, 0, o, Nullop); | |
93c66552 | 2095 | op_null(o); |
11343788 | 2096 | return o; |
79072805 LW |
2097 | } |
2098 | ||
2099 | OP * | |
864dbfa3 | 2100 | Perl_newLISTOP(pTHX_ I32 type, I32 flags, OP *first, OP *last) |
79072805 LW |
2101 | { |
2102 | LISTOP *listop; | |
2103 | ||
b7dc083c | 2104 | NewOp(1101, listop, 1, LISTOP); |
79072805 | 2105 | |
eb160463 | 2106 | listop->op_type = (OPCODE)type; |
22c35a8c | 2107 | listop->op_ppaddr = PL_ppaddr[type]; |
117dada2 SM |
2108 | if (first || last) |
2109 | flags |= OPf_KIDS; | |
eb160463 | 2110 | listop->op_flags = (U8)flags; |
79072805 LW |
2111 | |
2112 | if (!last && first) | |
2113 | last = first; | |
2114 | else if (!first && last) | |
2115 | first = last; | |
8990e307 LW |
2116 | else if (first) |
2117 | first->op_sibling = last; | |
79072805 LW |
2118 | listop->op_first = first; |
2119 | listop->op_last = last; | |
8990e307 LW |
2120 | if (type == OP_LIST) { |
2121 | OP* pushop; | |
2122 | pushop = newOP(OP_PUSHMARK, 0); | |
2123 | pushop->op_sibling = first; | |
2124 | listop->op_first = pushop; | |
2125 | listop->op_flags |= OPf_KIDS; | |
2126 | if (!last) | |
2127 | listop->op_last = pushop; | |
2128 | } | |
79072805 LW |
2129 | |
2130 | return (OP*)listop; | |
2131 | } | |
2132 | ||
2133 | OP * | |
864dbfa3 | 2134 | Perl_newOP(pTHX_ I32 type, I32 flags) |
79072805 | 2135 | { |
11343788 | 2136 | OP *o; |
b7dc083c | 2137 | NewOp(1101, o, 1, OP); |
eb160463 | 2138 | o->op_type = (OPCODE)type; |
22c35a8c | 2139 | o->op_ppaddr = PL_ppaddr[type]; |
eb160463 | 2140 | o->op_flags = (U8)flags; |
79072805 | 2141 | |
11343788 | 2142 | o->op_next = o; |
eb160463 | 2143 | o->op_private = (U8)(0 | (flags >> 8)); |
22c35a8c | 2144 | if (PL_opargs[type] & OA_RETSCALAR) |
11343788 | 2145 | scalar(o); |
22c35a8c | 2146 | if (PL_opargs[type] & OA_TARGET) |
11343788 MB |
2147 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
2148 | return CHECKOP(type, o); | |
79072805 LW |
2149 | } |
2150 | ||
2151 | OP * | |
864dbfa3 | 2152 | Perl_newUNOP(pTHX_ I32 type, I32 flags, OP *first) |
79072805 LW |
2153 | { |
2154 | UNOP *unop; | |
2155 | ||
93a17b20 | 2156 | if (!first) |
aeea060c | 2157 | first = newOP(OP_STUB, 0); |
22c35a8c | 2158 | if (PL_opargs[type] & OA_MARK) |
8990e307 | 2159 | first = force_list(first); |
93a17b20 | 2160 | |
b7dc083c | 2161 | NewOp(1101, unop, 1, UNOP); |
eb160463 | 2162 | unop->op_type = (OPCODE)type; |
22c35a8c | 2163 | unop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2164 | unop->op_first = first; |
2165 | unop->op_flags = flags | OPf_KIDS; | |
eb160463 | 2166 | unop->op_private = (U8)(1 | (flags >> 8)); |
e50aee73 | 2167 | unop = (UNOP*) CHECKOP(type, unop); |
79072805 LW |
2168 | if (unop->op_next) |
2169 | return (OP*)unop; | |
2170 | ||
a0d0e21e | 2171 | return fold_constants((OP *) unop); |
79072805 LW |
2172 | } |
2173 | ||
2174 | OP * | |
864dbfa3 | 2175 | Perl_newBINOP(pTHX_ I32 type, I32 flags, OP *first, OP *last) |
79072805 LW |
2176 | { |
2177 | BINOP *binop; | |
b7dc083c | 2178 | NewOp(1101, binop, 1, BINOP); |
79072805 LW |
2179 | |
2180 | if (!first) | |
2181 | first = newOP(OP_NULL, 0); | |
2182 | ||
eb160463 | 2183 | binop->op_type = (OPCODE)type; |
22c35a8c | 2184 | binop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2185 | binop->op_first = first; |
2186 | binop->op_flags = flags | OPf_KIDS; | |
2187 | if (!last) { | |
2188 | last = first; | |
eb160463 | 2189 | binop->op_private = (U8)(1 | (flags >> 8)); |
79072805 LW |
2190 | } |
2191 | else { | |
eb160463 | 2192 | binop->op_private = (U8)(2 | (flags >> 8)); |
79072805 LW |
2193 | first->op_sibling = last; |
2194 | } | |
2195 | ||
e50aee73 | 2196 | binop = (BINOP*)CHECKOP(type, binop); |
eb160463 | 2197 | if (binop->op_next || binop->op_type != (OPCODE)type) |
79072805 LW |
2198 | return (OP*)binop; |
2199 | ||
7284ab6f | 2200 | binop->op_last = binop->op_first->op_sibling; |
79072805 | 2201 | |
a0d0e21e | 2202 | return fold_constants((OP *)binop); |
79072805 LW |
2203 | } |
2204 | ||
a0ed51b3 | 2205 | static int |
2b9d42f0 NIS |
2206 | uvcompare(const void *a, const void *b) |
2207 | { | |
2208 | if (*((UV *)a) < (*(UV *)b)) | |
2209 | return -1; | |
2210 | if (*((UV *)a) > (*(UV *)b)) | |
2211 | return 1; | |
2212 | if (*((UV *)a+1) < (*(UV *)b+1)) | |
2213 | return -1; | |
2214 | if (*((UV *)a+1) > (*(UV *)b+1)) | |
2215 | return 1; | |
a0ed51b3 LW |
2216 | return 0; |
2217 | } | |
2218 | ||
79072805 | 2219 | OP * |
864dbfa3 | 2220 | Perl_pmtrans(pTHX_ OP *o, OP *expr, OP *repl) |
79072805 | 2221 | { |
79072805 LW |
2222 | SV *tstr = ((SVOP*)expr)->op_sv; |
2223 | SV *rstr = ((SVOP*)repl)->op_sv; | |
463ee0b2 LW |
2224 | STRLEN tlen; |
2225 | STRLEN rlen; | |
9b877dbb IH |
2226 | U8 *t = (U8*)SvPV(tstr, tlen); |
2227 | U8 *r = (U8*)SvPV(rstr, rlen); | |
79072805 LW |
2228 | register I32 i; |
2229 | register I32 j; | |
a0ed51b3 | 2230 | I32 del; |
79072805 | 2231 | I32 complement; |
5d06d08e | 2232 | I32 squash; |
9b877dbb | 2233 | I32 grows = 0; |
79072805 LW |
2234 | register short *tbl; |
2235 | ||
800b4dc4 | 2236 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 2237 | complement = o->op_private & OPpTRANS_COMPLEMENT; |
a0ed51b3 | 2238 | del = o->op_private & OPpTRANS_DELETE; |
5d06d08e | 2239 | squash = o->op_private & OPpTRANS_SQUASH; |
1c846c1f | 2240 | |
036b4402 GS |
2241 | if (SvUTF8(tstr)) |
2242 | o->op_private |= OPpTRANS_FROM_UTF; | |
1c846c1f NIS |
2243 | |
2244 | if (SvUTF8(rstr)) | |
036b4402 | 2245 | o->op_private |= OPpTRANS_TO_UTF; |
79072805 | 2246 | |
a0ed51b3 | 2247 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { |
79cb57f6 | 2248 | SV* listsv = newSVpvn("# comment\n",10); |
a0ed51b3 LW |
2249 | SV* transv = 0; |
2250 | U8* tend = t + tlen; | |
2251 | U8* rend = r + rlen; | |
ba210ebe | 2252 | STRLEN ulen; |
a0ed51b3 LW |
2253 | U32 tfirst = 1; |
2254 | U32 tlast = 0; | |
2255 | I32 tdiff; | |
2256 | U32 rfirst = 1; | |
2257 | U32 rlast = 0; | |
2258 | I32 rdiff; | |
2259 | I32 diff; | |
2260 | I32 none = 0; | |
2261 | U32 max = 0; | |
2262 | I32 bits; | |
a0ed51b3 | 2263 | I32 havefinal = 0; |
9c5ffd7c | 2264 | U32 final = 0; |
a0ed51b3 LW |
2265 | I32 from_utf = o->op_private & OPpTRANS_FROM_UTF; |
2266 | I32 to_utf = o->op_private & OPpTRANS_TO_UTF; | |
bf4a1e57 JH |
2267 | U8* tsave = NULL; |
2268 | U8* rsave = NULL; | |
2269 | ||
2270 | if (!from_utf) { | |
2271 | STRLEN len = tlen; | |
2272 | tsave = t = bytes_to_utf8(t, &len); | |
2273 | tend = t + len; | |
2274 | } | |
2275 | if (!to_utf && rlen) { | |
2276 | STRLEN len = rlen; | |
2277 | rsave = r = bytes_to_utf8(r, &len); | |
2278 | rend = r + len; | |
2279 | } | |
a0ed51b3 | 2280 | |
2b9d42f0 NIS |
2281 | /* There are several snags with this code on EBCDIC: |
2282 | 1. 0xFF is a legal UTF-EBCDIC byte (there are no illegal bytes). | |
2283 | 2. scan_const() in toke.c has encoded chars in native encoding which makes | |
2284 | ranges at least in EBCDIC 0..255 range the bottom odd. | |
2285 | */ | |
2286 | ||
a0ed51b3 | 2287 | if (complement) { |
ad391ad9 | 2288 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 | 2289 | UV *cp; |
a0ed51b3 | 2290 | UV nextmin = 0; |
2b9d42f0 | 2291 | New(1109, cp, 2*tlen, UV); |
a0ed51b3 | 2292 | i = 0; |
79cb57f6 | 2293 | transv = newSVpvn("",0); |
a0ed51b3 | 2294 | while (t < tend) { |
2b9d42f0 NIS |
2295 | cp[2*i] = utf8n_to_uvuni(t, tend-t, &ulen, 0); |
2296 | t += ulen; | |
2297 | if (t < tend && NATIVE_TO_UTF(*t) == 0xff) { | |
a0ed51b3 | 2298 | t++; |
2b9d42f0 NIS |
2299 | cp[2*i+1] = utf8n_to_uvuni(t, tend-t, &ulen, 0); |
2300 | t += ulen; | |
a0ed51b3 | 2301 | } |
2b9d42f0 NIS |
2302 | else { |
2303 | cp[2*i+1] = cp[2*i]; | |
2304 | } | |
2305 | i++; | |
a0ed51b3 | 2306 | } |
2b9d42f0 | 2307 | qsort(cp, i, 2*sizeof(UV), uvcompare); |
a0ed51b3 | 2308 | for (j = 0; j < i; j++) { |
2b9d42f0 | 2309 | UV val = cp[2*j]; |
a0ed51b3 LW |
2310 | diff = val - nextmin; |
2311 | if (diff > 0) { | |
9041c2e3 | 2312 | t = uvuni_to_utf8(tmpbuf,nextmin); |
dfe13c55 | 2313 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 | 2314 | if (diff > 1) { |
2b9d42f0 | 2315 | U8 range_mark = UTF_TO_NATIVE(0xff); |
9041c2e3 | 2316 | t = uvuni_to_utf8(tmpbuf, val - 1); |
2b9d42f0 | 2317 | sv_catpvn(transv, (char *)&range_mark, 1); |
dfe13c55 | 2318 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 LW |
2319 | } |
2320 | } | |
2b9d42f0 | 2321 | val = cp[2*j+1]; |
a0ed51b3 LW |
2322 | if (val >= nextmin) |
2323 | nextmin = val + 1; | |
2324 | } | |
9041c2e3 | 2325 | t = uvuni_to_utf8(tmpbuf,nextmin); |
dfe13c55 | 2326 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
2b9d42f0 NIS |
2327 | { |
2328 | U8 range_mark = UTF_TO_NATIVE(0xff); | |
2329 | sv_catpvn(transv, (char *)&range_mark, 1); | |
2330 | } | |
b851fbc1 JH |
2331 | t = uvuni_to_utf8_flags(tmpbuf, 0x7fffffff, |
2332 | UNICODE_ALLOW_SUPER); | |
dfe13c55 GS |
2333 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
2334 | t = (U8*)SvPVX(transv); | |
a0ed51b3 LW |
2335 | tlen = SvCUR(transv); |
2336 | tend = t + tlen; | |
455d824a | 2337 | Safefree(cp); |
a0ed51b3 LW |
2338 | } |
2339 | else if (!rlen && !del) { | |
2340 | r = t; rlen = tlen; rend = tend; | |
4757a243 LW |
2341 | } |
2342 | if (!squash) { | |
05d340b8 | 2343 | if ((!rlen && !del) || t == r || |
12ae5dfc | 2344 | (tlen == rlen && memEQ((char *)t, (char *)r, tlen))) |
01ec43d0 | 2345 | { |
4757a243 | 2346 | o->op_private |= OPpTRANS_IDENTICAL; |
01ec43d0 | 2347 | } |
a0ed51b3 LW |
2348 | } |
2349 | ||
2350 | while (t < tend || tfirst <= tlast) { | |
2351 | /* see if we need more "t" chars */ | |
2352 | if (tfirst > tlast) { | |
9041c2e3 | 2353 | tfirst = (I32)utf8n_to_uvuni(t, tend - t, &ulen, 0); |
a0ed51b3 | 2354 | t += ulen; |
2b9d42f0 | 2355 | if (t < tend && NATIVE_TO_UTF(*t) == 0xff) { /* illegal utf8 val indicates range */ |
ba210ebe | 2356 | t++; |
9041c2e3 | 2357 | tlast = (I32)utf8n_to_uvuni(t, tend - t, &ulen, 0); |
a0ed51b3 LW |
2358 | t += ulen; |
2359 | } | |
2360 | else | |
2361 | tlast = tfirst; | |
2362 | } | |
2363 | ||
2364 | /* now see if we need more "r" chars */ | |
2365 | if (rfirst > rlast) { | |
2366 | if (r < rend) { | |
9041c2e3 | 2367 | rfirst = (I32)utf8n_to_uvuni(r, rend - r, &ulen, 0); |
a0ed51b3 | 2368 | r += ulen; |
2b9d42f0 | 2369 | if (r < rend && NATIVE_TO_UTF(*r) == 0xff) { /* illegal utf8 val indicates range */ |
ba210ebe | 2370 | r++; |
9041c2e3 | 2371 | rlast = (I32)utf8n_to_uvuni(r, rend - r, &ulen, 0); |
a0ed51b3 LW |
2372 | r += ulen; |
2373 | } | |
2374 | else | |
2375 | rlast = rfirst; | |
2376 | } | |
2377 | else { | |
2378 | if (!havefinal++) | |
2379 | final = rlast; | |
2380 | rfirst = rlast = 0xffffffff; | |
2381 | } | |
2382 | } | |
2383 | ||
2384 | /* now see which range will peter our first, if either. */ | |
2385 | tdiff = tlast - tfirst; | |
2386 | rdiff = rlast - rfirst; | |
2387 | ||
2388 | if (tdiff <= rdiff) | |
2389 | diff = tdiff; | |
2390 | else | |
2391 | diff = rdiff; | |
2392 | ||
2393 | if (rfirst == 0xffffffff) { | |
2394 | diff = tdiff; /* oops, pretend rdiff is infinite */ | |
2395 | if (diff > 0) | |
894356b3 GS |
2396 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t%04lx\tXXXX\n", |
2397 | (long)tfirst, (long)tlast); | |
a0ed51b3 | 2398 | else |
894356b3 | 2399 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t\tXXXX\n", (long)tfirst); |
a0ed51b3 LW |
2400 | } |
2401 | else { | |
2402 | if (diff > 0) | |
894356b3 GS |
2403 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t%04lx\t%04lx\n", |
2404 | (long)tfirst, (long)(tfirst + diff), | |
2405 | (long)rfirst); | |
a0ed51b3 | 2406 | else |
894356b3 GS |
2407 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t\t%04lx\n", |
2408 | (long)tfirst, (long)rfirst); | |
a0ed51b3 LW |
2409 | |
2410 | if (rfirst + diff > max) | |
2411 | max = rfirst + diff; | |
9b877dbb | 2412 | if (!grows) |
45005bfb JH |
2413 | grows = (tfirst < rfirst && |
2414 | UNISKIP(tfirst) < UNISKIP(rfirst + diff)); | |
2415 | rfirst += diff + 1; | |
a0ed51b3 LW |
2416 | } |
2417 | tfirst += diff + 1; | |
2418 | } | |
2419 | ||
2420 | none = ++max; | |
2421 | if (del) | |
2422 | del = ++max; | |
2423 | ||
2424 | if (max > 0xffff) | |
2425 | bits = 32; | |
2426 | else if (max > 0xff) | |
2427 | bits = 16; | |
2428 | else | |
2429 | bits = 8; | |
2430 | ||
455d824a | 2431 | Safefree(cPVOPo->op_pv); |
a0ed51b3 LW |
2432 | cSVOPo->op_sv = (SV*)swash_init("utf8", "", listsv, bits, none); |
2433 | SvREFCNT_dec(listsv); | |
2434 | if (transv) | |
2435 | SvREFCNT_dec(transv); | |
2436 | ||
45005bfb | 2437 | if (!del && havefinal && rlen) |
b448e4fe JH |
2438 | (void)hv_store((HV*)SvRV((cSVOPo->op_sv)), "FINAL", 5, |
2439 | newSVuv((UV)final), 0); | |
a0ed51b3 | 2440 | |
9b877dbb | 2441 | if (grows) |
a0ed51b3 LW |
2442 | o->op_private |= OPpTRANS_GROWS; |
2443 | ||
9b877dbb IH |
2444 | if (tsave) |
2445 | Safefree(tsave); | |
2446 | if (rsave) | |
2447 | Safefree(rsave); | |
2448 | ||
a0ed51b3 LW |
2449 | op_free(expr); |
2450 | op_free(repl); | |
2451 | return o; | |
2452 | } | |
2453 | ||
2454 | tbl = (short*)cPVOPo->op_pv; | |
79072805 LW |
2455 | if (complement) { |
2456 | Zero(tbl, 256, short); | |
eb160463 | 2457 | for (i = 0; i < (I32)tlen; i++) |
ec49126f | 2458 | tbl[t[i]] = -1; |
79072805 LW |
2459 | for (i = 0, j = 0; i < 256; i++) { |
2460 | if (!tbl[i]) { | |
eb160463 | 2461 | if (j >= (I32)rlen) { |
a0ed51b3 | 2462 | if (del) |
79072805 LW |
2463 | tbl[i] = -2; |
2464 | else if (rlen) | |
ec49126f | 2465 | tbl[i] = r[j-1]; |
79072805 | 2466 | else |
eb160463 | 2467 | tbl[i] = (short)i; |
79072805 | 2468 | } |
9b877dbb IH |
2469 | else { |
2470 | if (i < 128 && r[j] >= 128) | |
2471 | grows = 1; | |
ec49126f | 2472 | tbl[i] = r[j++]; |
9b877dbb | 2473 | } |
79072805 LW |
2474 | } |
2475 | } | |
05d340b8 JH |
2476 | if (!del) { |
2477 | if (!rlen) { | |
2478 | j = rlen; | |
2479 | if (!squash) | |
2480 | o->op_private |= OPpTRANS_IDENTICAL; | |
2481 | } | |
eb160463 | 2482 | else if (j >= (I32)rlen) |
05d340b8 JH |
2483 | j = rlen - 1; |
2484 | else | |
2485 | cPVOPo->op_pv = (char*)Renew(tbl, 0x101+rlen-j, short); | |
8973db79 | 2486 | tbl[0x100] = rlen - j; |
eb160463 | 2487 | for (i=0; i < (I32)rlen - j; i++) |
8973db79 JH |
2488 | tbl[0x101+i] = r[j+i]; |
2489 | } | |
79072805 LW |
2490 | } |
2491 | else { | |
a0ed51b3 | 2492 | if (!rlen && !del) { |
79072805 | 2493 | r = t; rlen = tlen; |
5d06d08e | 2494 | if (!squash) |
4757a243 | 2495 | o->op_private |= OPpTRANS_IDENTICAL; |
79072805 | 2496 | } |
94bfe852 RGS |
2497 | else if (!squash && rlen == tlen && memEQ((char*)t, (char*)r, tlen)) { |
2498 | o->op_private |= OPpTRANS_IDENTICAL; | |
2499 | } | |
79072805 LW |
2500 | for (i = 0; i < 256; i++) |
2501 | tbl[i] = -1; | |
eb160463 GS |
2502 | for (i = 0, j = 0; i < (I32)tlen; i++,j++) { |
2503 | if (j >= (I32)rlen) { | |
a0ed51b3 | 2504 | if (del) { |
ec49126f | 2505 | if (tbl[t[i]] == -1) |
2506 | tbl[t[i]] = -2; | |
79072805 LW |
2507 | continue; |
2508 | } | |
2509 | --j; | |
2510 | } | |
9b877dbb IH |
2511 | if (tbl[t[i]] == -1) { |
2512 | if (t[i] < 128 && r[j] >= 128) | |
2513 | grows = 1; | |
ec49126f | 2514 | tbl[t[i]] = r[j]; |
9b877dbb | 2515 | } |
79072805 LW |
2516 | } |
2517 | } | |
9b877dbb IH |
2518 | if (grows) |
2519 | o->op_private |= OPpTRANS_GROWS; | |
79072805 LW |
2520 | op_free(expr); |
2521 | op_free(repl); | |
2522 | ||
11343788 | 2523 | return o; |
79072805 LW |
2524 | } |
2525 | ||
2526 | OP * | |
864dbfa3 | 2527 | Perl_newPMOP(pTHX_ I32 type, I32 flags) |
79072805 LW |
2528 | { |
2529 | PMOP *pmop; | |
2530 | ||
b7dc083c | 2531 | NewOp(1101, pmop, 1, PMOP); |
eb160463 | 2532 | pmop->op_type = (OPCODE)type; |
22c35a8c | 2533 | pmop->op_ppaddr = PL_ppaddr[type]; |
eb160463 GS |
2534 | pmop->op_flags = (U8)flags; |
2535 | pmop->op_private = (U8)(0 | (flags >> 8)); | |
79072805 | 2536 | |
3280af22 | 2537 | if (PL_hints & HINT_RE_TAINT) |
b3eb6a9b | 2538 | pmop->op_pmpermflags |= PMf_RETAINT; |
3280af22 | 2539 | if (PL_hints & HINT_LOCALE) |
b3eb6a9b GS |
2540 | pmop->op_pmpermflags |= PMf_LOCALE; |
2541 | pmop->op_pmflags = pmop->op_pmpermflags; | |
36477c24 | 2542 | |
debc9467 | 2543 | #ifdef USE_ITHREADS |
13137afc AB |
2544 | { |
2545 | SV* repointer; | |
2546 | if(av_len((AV*) PL_regex_pad[0]) > -1) { | |
2547 | repointer = av_pop((AV*)PL_regex_pad[0]); | |
2548 | pmop->op_pmoffset = SvIV(repointer); | |
1cc8b4c5 | 2549 | SvREPADTMP_off(repointer); |
13137afc | 2550 | sv_setiv(repointer,0); |
1eb1540c | 2551 | } else { |
13137afc AB |
2552 | repointer = newSViv(0); |
2553 | av_push(PL_regex_padav,SvREFCNT_inc(repointer)); | |
2554 | pmop->op_pmoffset = av_len(PL_regex_padav); | |
2555 | PL_regex_pad = AvARRAY(PL_regex_padav); | |
1fcf4c12 | 2556 | } |
13137afc | 2557 | } |
debc9467 | 2558 | #endif |
1eb1540c | 2559 | |
1fcf4c12 | 2560 | /* link into pm list */ |
3280af22 NIS |
2561 | if (type != OP_TRANS && PL_curstash) { |
2562 | pmop->op_pmnext = HvPMROOT(PL_curstash); | |
2563 | HvPMROOT(PL_curstash) = pmop; | |
cb55de95 | 2564 | PmopSTASH_set(pmop,PL_curstash); |
79072805 LW |
2565 | } |
2566 | ||
2567 | return (OP*)pmop; | |
2568 | } | |
2569 | ||
2570 | OP * | |
864dbfa3 | 2571 | Perl_pmruntime(pTHX_ OP *o, OP *expr, OP *repl) |
79072805 LW |
2572 | { |
2573 | PMOP *pm; | |
2574 | LOGOP *rcop; | |
ce862d02 | 2575 | I32 repl_has_vars = 0; |
79072805 | 2576 | |
11343788 MB |
2577 | if (o->op_type == OP_TRANS) |
2578 | return pmtrans(o, expr, repl); | |
79072805 | 2579 | |
3280af22 | 2580 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 2581 | pm = (PMOP*)o; |
79072805 LW |
2582 | |
2583 | if (expr->op_type == OP_CONST) { | |
463ee0b2 | 2584 | STRLEN plen; |
79072805 | 2585 | SV *pat = ((SVOP*)expr)->op_sv; |
463ee0b2 | 2586 | char *p = SvPV(pat, plen); |
11343788 | 2587 | if ((o->op_flags & OPf_SPECIAL) && strEQ(p, " ")) { |
93a17b20 | 2588 | sv_setpvn(pat, "\\s+", 3); |
463ee0b2 | 2589 | p = SvPV(pat, plen); |
79072805 LW |
2590 | pm->op_pmflags |= PMf_SKIPWHITE; |
2591 | } | |
5b71a6a7 | 2592 | if (DO_UTF8(pat)) |
a5961de5 | 2593 | pm->op_pmdynflags |= PMdf_UTF8; |
aaa362c4 RS |
2594 | PM_SETRE(pm, CALLREGCOMP(aTHX_ p, p + plen, pm)); |
2595 | if (strEQ("\\s+", PM_GETRE(pm)->precomp)) | |
85e6fe83 | 2596 | pm->op_pmflags |= PMf_WHITE; |
79072805 LW |
2597 | op_free(expr); |
2598 | } | |
2599 | else { | |
3280af22 | 2600 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) |
1c846c1f | 2601 | expr = newUNOP((!(PL_hints & HINT_RE_EVAL) |
2cd61cdb IZ |
2602 | ? OP_REGCRESET |
2603 | : OP_REGCMAYBE),0,expr); | |
463ee0b2 | 2604 | |
b7dc083c | 2605 | NewOp(1101, rcop, 1, LOGOP); |
79072805 | 2606 | rcop->op_type = OP_REGCOMP; |
22c35a8c | 2607 | rcop->op_ppaddr = PL_ppaddr[OP_REGCOMP]; |
79072805 | 2608 | rcop->op_first = scalar(expr); |
1c846c1f | 2609 | rcop->op_flags |= ((PL_hints & HINT_RE_EVAL) |
2cd61cdb IZ |
2610 | ? (OPf_SPECIAL | OPf_KIDS) |
2611 | : OPf_KIDS); | |
79072805 | 2612 | rcop->op_private = 1; |
11343788 | 2613 | rcop->op_other = o; |
79072805 LW |
2614 | |
2615 | /* establish postfix order */ | |
3280af22 | 2616 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) { |
463ee0b2 LW |
2617 | LINKLIST(expr); |
2618 | rcop->op_next = expr; | |
2619 | ((UNOP*)expr)->op_first->op_next = (OP*)rcop; | |
2620 | } | |
2621 | else { | |
2622 | rcop->op_next = LINKLIST(expr); | |
2623 | expr->op_next = (OP*)rcop; | |
2624 | } | |
79072805 | 2625 | |
11343788 | 2626 | prepend_elem(o->op_type, scalar((OP*)rcop), o); |
79072805 LW |
2627 | } |
2628 | ||
2629 | if (repl) { | |
748a9306 | 2630 | OP *curop; |
0244c3a4 | 2631 | if (pm->op_pmflags & PMf_EVAL) { |
748a9306 | 2632 | curop = 0; |
57843af0 | 2633 | if (CopLINE(PL_curcop) < PL_multi_end) |
eb160463 | 2634 | CopLINE_set(PL_curcop, (line_t)PL_multi_end); |
0244c3a4 | 2635 | } |
748a9306 LW |
2636 | else if (repl->op_type == OP_CONST) |
2637 | curop = repl; | |
79072805 | 2638 | else { |
79072805 LW |
2639 | OP *lastop = 0; |
2640 | for (curop = LINKLIST(repl); curop!=repl; curop = LINKLIST(curop)) { | |
22c35a8c | 2641 | if (PL_opargs[curop->op_type] & OA_DANGEROUS) { |
79072805 | 2642 | if (curop->op_type == OP_GV) { |
638eceb6 | 2643 | GV *gv = cGVOPx_gv(curop); |
ce862d02 | 2644 | repl_has_vars = 1; |
f702bf4a | 2645 | if (strchr("&`'123456789+-\016\022", *GvENAME(gv))) |
79072805 LW |
2646 | break; |
2647 | } | |
2648 | else if (curop->op_type == OP_RV2CV) | |
2649 | break; | |
2650 | else if (curop->op_type == OP_RV2SV || | |
2651 | curop->op_type == OP_RV2AV || | |
2652 | curop->op_type == OP_RV2HV || | |
2653 | curop->op_type == OP_RV2GV) { | |
2654 | if (lastop && lastop->op_type != OP_GV) /*funny deref?*/ | |
2655 | break; | |
2656 | } | |
748a9306 LW |
2657 | else if (curop->op_type == OP_PADSV || |
2658 | curop->op_type == OP_PADAV || | |
2659 | curop->op_type == OP_PADHV || | |
554b3eca | 2660 | curop->op_type == OP_PADANY) { |
ce862d02 | 2661 | repl_has_vars = 1; |
748a9306 | 2662 | } |
1167e5da SM |
2663 | else if (curop->op_type == OP_PUSHRE) |
2664 | ; /* Okay here, dangerous in newASSIGNOP */ | |
79072805 LW |
2665 | else |
2666 | break; | |
2667 | } | |
2668 | lastop = curop; | |
2669 | } | |
748a9306 | 2670 | } |
ce862d02 | 2671 | if (curop == repl |
1c846c1f | 2672 | && !(repl_has_vars |
aaa362c4 RS |
2673 | && (!PM_GETRE(pm) |
2674 | || PM_GETRE(pm)->reganch & ROPT_EVAL_SEEN))) { | |
748a9306 | 2675 | pm->op_pmflags |= PMf_CONST; /* const for long enough */ |
4633a7c4 | 2676 | pm->op_pmpermflags |= PMf_CONST; /* const for long enough */ |
11343788 | 2677 | prepend_elem(o->op_type, scalar(repl), o); |
748a9306 LW |
2678 | } |
2679 | else { | |
aaa362c4 | 2680 | if (curop == repl && !PM_GETRE(pm)) { /* Has variables. */ |
ce862d02 IZ |
2681 | pm->op_pmflags |= PMf_MAYBE_CONST; |
2682 | pm->op_pmpermflags |= PMf_MAYBE_CONST; | |
2683 | } | |
b7dc083c | 2684 | NewOp(1101, rcop, 1, LOGOP); |
748a9306 | 2685 | rcop->op_type = OP_SUBSTCONT; |
22c35a8c | 2686 | rcop->op_ppaddr = PL_ppaddr[OP_SUBSTCONT]; |
748a9306 LW |
2687 | rcop->op_first = scalar(repl); |
2688 | rcop->op_flags |= OPf_KIDS; | |
2689 | rcop->op_private = 1; | |
11343788 | 2690 | rcop->op_other = o; |
748a9306 LW |
2691 | |
2692 | /* establish postfix order */ | |
2693 | rcop->op_next = LINKLIST(repl); | |
2694 | repl->op_next = (OP*)rcop; | |
2695 | ||
2696 | pm->op_pmreplroot = scalar((OP*)rcop); | |
2697 | pm->op_pmreplstart = LINKLIST(rcop); | |
2698 | rcop->op_next = 0; | |
79072805 LW |
2699 | } |
2700 | } | |
2701 | ||
2702 | return (OP*)pm; | |
2703 | } | |
2704 | ||
2705 | OP * | |
864dbfa3 | 2706 | Perl_newSVOP(pTHX_ I32 type, I32 flags, SV *sv) |
79072805 LW |
2707 | { |
2708 | SVOP *svop; | |
b7dc083c | 2709 | NewOp(1101, svop, 1, SVOP); |
eb160463 | 2710 | svop->op_type = (OPCODE)type; |
22c35a8c | 2711 | svop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2712 | svop->op_sv = sv; |
2713 | svop->op_next = (OP*)svop; | |
eb160463 | 2714 | svop->op_flags = (U8)flags; |
22c35a8c | 2715 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 2716 | scalar((OP*)svop); |
22c35a8c | 2717 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 2718 | svop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2719 | return CHECKOP(type, svop); |
79072805 LW |
2720 | } |
2721 | ||
2722 | OP * | |
350de78d GS |
2723 | Perl_newPADOP(pTHX_ I32 type, I32 flags, SV *sv) |
2724 | { | |
2725 | PADOP *padop; | |
2726 | NewOp(1101, padop, 1, PADOP); | |
eb160463 | 2727 | padop->op_type = (OPCODE)type; |
350de78d GS |
2728 | padop->op_ppaddr = PL_ppaddr[type]; |
2729 | padop->op_padix = pad_alloc(type, SVs_PADTMP); | |
dd2155a4 DM |
2730 | SvREFCNT_dec(PAD_SVl(padop->op_padix)); |
2731 | PAD_SETSV(padop->op_padix, sv); | |
ce50c033 AMS |
2732 | if (sv) |
2733 | SvPADTMP_on(sv); | |
350de78d | 2734 | padop->op_next = (OP*)padop; |
eb160463 | 2735 | padop->op_flags = (U8)flags; |
350de78d GS |
2736 | if (PL_opargs[type] & OA_RETSCALAR) |
2737 | scalar((OP*)padop); | |
2738 | if (PL_opargs[type] & OA_TARGET) | |
2739 | padop->op_targ = pad_alloc(type, SVs_PADTMP); | |
2740 | return CHECKOP(type, padop); | |
2741 | } | |
2742 | ||
2743 | OP * | |
864dbfa3 | 2744 | Perl_newGVOP(pTHX_ I32 type, I32 flags, GV *gv) |
79072805 | 2745 | { |
350de78d | 2746 | #ifdef USE_ITHREADS |
ce50c033 AMS |
2747 | if (gv) |
2748 | GvIN_PAD_on(gv); | |
350de78d GS |
2749 | return newPADOP(type, flags, SvREFCNT_inc(gv)); |
2750 | #else | |
7934575e | 2751 | return newSVOP(type, flags, SvREFCNT_inc(gv)); |
350de78d | 2752 | #endif |
79072805 LW |
2753 | } |
2754 | ||
2755 | OP * | |
864dbfa3 | 2756 | Perl_newPVOP(pTHX_ I32 type, I32 flags, char *pv) |
79072805 LW |
2757 | { |
2758 | PVOP *pvop; | |
b7dc083c | 2759 | NewOp(1101, pvop, 1, PVOP); |
eb160463 | 2760 | pvop->op_type = (OPCODE)type; |
22c35a8c | 2761 | pvop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2762 | pvop->op_pv = pv; |
2763 | pvop->op_next = (OP*)pvop; | |
eb160463 | 2764 | pvop->op_flags = (U8)flags; |
22c35a8c | 2765 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 2766 | scalar((OP*)pvop); |
22c35a8c | 2767 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 2768 | pvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2769 | return CHECKOP(type, pvop); |
79072805 LW |
2770 | } |
2771 | ||
79072805 | 2772 | void |
864dbfa3 | 2773 | Perl_package(pTHX_ OP *o) |
79072805 | 2774 | { |
de11ba31 AMS |
2775 | char *name; |
2776 | STRLEN len; | |
79072805 | 2777 | |
3280af22 NIS |
2778 | save_hptr(&PL_curstash); |
2779 | save_item(PL_curstname); | |
de11ba31 AMS |
2780 | |
2781 | name = SvPV(cSVOPo->op_sv, len); | |
2782 | PL_curstash = gv_stashpvn(name, len, TRUE); | |
2783 | sv_setpvn(PL_curstname, name, len); | |
2784 | op_free(o); | |
2785 | ||
7ad382f4 | 2786 | PL_hints |= HINT_BLOCK_SCOPE; |
3280af22 NIS |
2787 | PL_copline = NOLINE; |
2788 | PL_expect = XSTATE; | |
79072805 LW |
2789 | } |
2790 | ||
85e6fe83 | 2791 | void |
864dbfa3 | 2792 | Perl_utilize(pTHX_ int aver, I32 floor, OP *version, OP *id, OP *arg) |
85e6fe83 | 2793 | { |
a0d0e21e | 2794 | OP *pack; |
a0d0e21e | 2795 | OP *imop; |
b1cb66bf | 2796 | OP *veop; |
85e6fe83 | 2797 | |
a0d0e21e | 2798 | if (id->op_type != OP_CONST) |
cea2e8a9 | 2799 | Perl_croak(aTHX_ "Module name must be constant"); |
85e6fe83 | 2800 | |
b1cb66bf | 2801 | veop = Nullop; |
2802 | ||
0f79a09d | 2803 | if (version != Nullop) { |
b1cb66bf | 2804 | SV *vesv = ((SVOP*)version)->op_sv; |
2805 | ||
44dcb63b | 2806 | if (arg == Nullop && !SvNIOKp(vesv)) { |
b1cb66bf | 2807 | arg = version; |
2808 | } | |
2809 | else { | |
2810 | OP *pack; | |
0f79a09d | 2811 | SV *meth; |
b1cb66bf | 2812 | |
44dcb63b | 2813 | if (version->op_type != OP_CONST || !SvNIOKp(vesv)) |
cea2e8a9 | 2814 | Perl_croak(aTHX_ "Version number must be constant number"); |
b1cb66bf | 2815 | |
2816 | /* Make copy of id so we don't free it twice */ | |
2817 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); | |
2818 | ||
2819 | /* Fake up a method call to VERSION */ | |
0f79a09d GS |
2820 | meth = newSVpvn("VERSION",7); |
2821 | sv_upgrade(meth, SVt_PVIV); | |
155aba94 | 2822 | (void)SvIOK_on(meth); |
5afd6d42 | 2823 | PERL_HASH(SvUVX(meth), SvPVX(meth), SvCUR(meth)); |
b1cb66bf | 2824 | veop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, |
2825 | append_elem(OP_LIST, | |
0f79a09d GS |
2826 | prepend_elem(OP_LIST, pack, list(version)), |
2827 | newSVOP(OP_METHOD_NAMED, 0, meth))); | |
b1cb66bf | 2828 | } |
2829 | } | |
aeea060c | 2830 | |
a0d0e21e | 2831 | /* Fake up an import/unimport */ |
4633a7c4 LW |
2832 | if (arg && arg->op_type == OP_STUB) |
2833 | imop = arg; /* no import on explicit () */ | |
44dcb63b | 2834 | else if (SvNIOKp(((SVOP*)id)->op_sv)) { |
b1cb66bf | 2835 | imop = Nullop; /* use 5.0; */ |
2836 | } | |
4633a7c4 | 2837 | else { |
0f79a09d GS |
2838 | SV *meth; |
2839 | ||
4633a7c4 LW |
2840 | /* Make copy of id so we don't free it twice */ |
2841 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); | |
0f79a09d GS |
2842 | |
2843 | /* Fake up a method call to import/unimport */ | |
b47cad08 | 2844 | meth = aver ? newSVpvn("import",6) : newSVpvn("unimport", 8); |
ad4c42df | 2845 | (void)SvUPGRADE(meth, SVt_PVIV); |
155aba94 | 2846 | (void)SvIOK_on(meth); |
5afd6d42 | 2847 | PERL_HASH(SvUVX(meth), SvPVX(meth), SvCUR(meth)); |
4633a7c4 | 2848 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, |
0f79a09d GS |
2849 | append_elem(OP_LIST, |
2850 | prepend_elem(OP_LIST, pack, list(arg)), | |
2851 | newSVOP(OP_METHOD_NAMED, 0, meth))); | |
4633a7c4 LW |
2852 | } |
2853 | ||
a0d0e21e | 2854 | /* Fake up the BEGIN {}, which does its thing immediately. */ |
09bef843 | 2855 | newATTRSUB(floor, |
79cb57f6 | 2856 | newSVOP(OP_CONST, 0, newSVpvn("BEGIN", 5)), |
4633a7c4 | 2857 | Nullop, |
09bef843 | 2858 | Nullop, |
a0d0e21e | 2859 | append_elem(OP_LINESEQ, |
b1cb66bf | 2860 | append_elem(OP_LINESEQ, |
ec4ab249 | 2861 | newSTATEOP(0, Nullch, newUNOP(OP_REQUIRE, 0, id)), |
b1cb66bf | 2862 | newSTATEOP(0, Nullch, veop)), |
a0d0e21e | 2863 | newSTATEOP(0, Nullch, imop) )); |
85e6fe83 | 2864 | |
70f5e4ed JH |
2865 | /* The "did you use incorrect case?" warning used to be here. |
2866 | * The problem is that on case-insensitive filesystems one | |
2867 | * might get false positives for "use" (and "require"): | |
2868 | * "use Strict" or "require CARP" will work. This causes | |
2869 | * portability problems for the script: in case-strict | |
2870 | * filesystems the script will stop working. | |
2871 | * | |
2872 | * The "incorrect case" warning checked whether "use Foo" | |
2873 | * imported "Foo" to your namespace, but that is wrong, too: | |
2874 | * there is no requirement nor promise in the language that | |
2875 | * a Foo.pm should or would contain anything in package "Foo". | |
2876 | * | |
2877 | * There is very little Configure-wise that can be done, either: | |
2878 | * the case-sensitivity of the build filesystem of Perl does not | |
2879 | * help in guessing the case-sensitivity of the runtime environment. | |
2880 | */ | |
18fc9488 | 2881 | |
c305c6a0 | 2882 | PL_hints |= HINT_BLOCK_SCOPE; |
3280af22 NIS |
2883 | PL_copline = NOLINE; |
2884 | PL_expect = XSTATE; | |
85e6fe83 LW |
2885 | } |
2886 | ||
7d3fb230 | 2887 | /* |
ccfc67b7 JH |
2888 | =head1 Embedding Functions |
2889 | ||
7d3fb230 BS |
2890 | =for apidoc load_module |
2891 | ||
2892 | Loads the module whose name is pointed to by the string part of name. | |
2893 | Note that the actual module name, not its filename, should be given. | |
2894 | Eg, "Foo::Bar" instead of "Foo/Bar.pm". flags can be any of | |
2895 | PERL_LOADMOD_DENY, PERL_LOADMOD_NOIMPORT, or PERL_LOADMOD_IMPORT_OPS | |
2896 | (or 0 for no flags). ver, if specified, provides version semantics | |
2897 | similar to C<use Foo::Bar VERSION>. The optional trailing SV* | |
2898 | arguments can be used to specify arguments to the module's import() | |
2899 | method, similar to C<use Foo::Bar VERSION LIST>. | |
2900 | ||
2901 | =cut */ | |
2902 | ||
e4783991 GS |
2903 | void |
2904 | Perl_load_module(pTHX_ U32 flags, SV *name, SV *ver, ...) | |
2905 | { | |
2906 | va_list args; | |
2907 | va_start(args, ver); | |
2908 | vload_module(flags, name, ver, &args); | |
2909 | va_end(args); | |
2910 | } | |
2911 | ||
2912 | #ifdef PERL_IMPLICIT_CONTEXT | |
2913 | void | |
2914 | Perl_load_module_nocontext(U32 flags, SV *name, SV *ver, ...) | |
2915 | { | |
2916 | dTHX; | |
2917 | va_list args; | |
2918 | va_start(args, ver); | |
2919 | vload_module(flags, name, ver, &args); | |
2920 | va_end(args); | |
2921 | } | |
2922 | #endif | |
2923 | ||
2924 | void | |
2925 | Perl_vload_module(pTHX_ U32 flags, SV *name, SV *ver, va_list *args) | |
2926 | { | |
2927 | OP *modname, *veop, *imop; | |
2928 | ||
2929 | modname = newSVOP(OP_CONST, 0, name); | |
2930 | modname->op_private |= OPpCONST_BARE; | |
2931 | if (ver) { | |
2932 | veop = newSVOP(OP_CONST, 0, ver); | |
2933 | } | |
2934 | else | |
2935 | veop = Nullop; | |
2936 | if (flags & PERL_LOADMOD_NOIMPORT) { | |
2937 | imop = sawparens(newNULLLIST()); | |
2938 | } | |
2939 | else if (flags & PERL_LOADMOD_IMPORT_OPS) { | |
2940 | imop = va_arg(*args, OP*); | |
2941 | } | |
2942 | else { | |
2943 | SV *sv; | |
2944 | imop = Nullop; | |
2945 | sv = va_arg(*args, SV*); | |
2946 | while (sv) { | |
2947 | imop = append_elem(OP_LIST, imop, newSVOP(OP_CONST, 0, sv)); | |
2948 | sv = va_arg(*args, SV*); | |
2949 | } | |
2950 | } | |
81885997 GS |
2951 | { |
2952 | line_t ocopline = PL_copline; | |
834a3ffa | 2953 | COP *ocurcop = PL_curcop; |
81885997 GS |
2954 | int oexpect = PL_expect; |
2955 | ||
2956 | utilize(!(flags & PERL_LOADMOD_DENY), start_subparse(FALSE, 0), | |
2957 | veop, modname, imop); | |
2958 | PL_expect = oexpect; | |
2959 | PL_copline = ocopline; | |
834a3ffa | 2960 | PL_curcop = ocurcop; |
81885997 | 2961 | } |
e4783991 GS |
2962 | } |
2963 | ||
79072805 | 2964 | OP * |
864dbfa3 | 2965 | Perl_dofile(pTHX_ OP *term) |
78ca652e GS |
2966 | { |
2967 | OP *doop; | |
2968 | GV *gv; | |
2969 | ||
2970 | gv = gv_fetchpv("do", FALSE, SVt_PVCV); | |
b9f751c0 | 2971 | if (!(gv && GvCVu(gv) && GvIMPORTED_CV(gv))) |
78ca652e GS |
2972 | gv = gv_fetchpv("CORE::GLOBAL::do", FALSE, SVt_PVCV); |
2973 | ||
b9f751c0 | 2974 | if (gv && GvCVu(gv) && GvIMPORTED_CV(gv)) { |
78ca652e GS |
2975 | doop = ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, |
2976 | append_elem(OP_LIST, term, | |
2977 | scalar(newUNOP(OP_RV2CV, 0, | |
2978 | newGVOP(OP_GV, 0, | |
2979 | gv)))))); | |
2980 | } | |
2981 | else { | |
2982 | doop = newUNOP(OP_DOFILE, 0, scalar(term)); | |
2983 | } | |
2984 | return doop; | |
2985 | } | |
2986 | ||
2987 | OP * | |
864dbfa3 | 2988 | Perl_newSLICEOP(pTHX_ I32 flags, OP *subscript, OP *listval) |
79072805 LW |
2989 | { |
2990 | return newBINOP(OP_LSLICE, flags, | |
8990e307 LW |
2991 | list(force_list(subscript)), |
2992 | list(force_list(listval)) ); | |
79072805 LW |
2993 | } |
2994 | ||
76e3520e | 2995 | STATIC I32 |
cea2e8a9 | 2996 | S_list_assignment(pTHX_ register OP *o) |
79072805 | 2997 | { |
11343788 | 2998 | if (!o) |
79072805 LW |
2999 | return TRUE; |
3000 | ||
11343788 MB |
3001 | if (o->op_type == OP_NULL && o->op_flags & OPf_KIDS) |
3002 | o = cUNOPo->op_first; | |
79072805 | 3003 | |
11343788 | 3004 | if (o->op_type == OP_COND_EXPR) { |
1a67a97c SM |
3005 | I32 t = list_assignment(cLOGOPo->op_first->op_sibling); |
3006 | I32 f = list_assignment(cLOGOPo->op_first->op_sibling->op_sibling); | |
79072805 LW |
3007 | |
3008 | if (t && f) | |
3009 | return TRUE; | |
3010 | if (t || f) | |
3011 | yyerror("Assignment to both a list and a scalar"); | |
3012 | return FALSE; | |
3013 | } | |
3014 | ||
95f0a2f1 SB |
3015 | if (o->op_type == OP_LIST && |
3016 | (o->op_flags & OPf_WANT) == OPf_WANT_SCALAR && | |
3017 | o->op_private & OPpLVAL_INTRO) | |
3018 | return FALSE; | |
3019 | ||
11343788 MB |
3020 | if (o->op_type == OP_LIST || o->op_flags & OPf_PARENS || |
3021 | o->op_type == OP_RV2AV || o->op_type == OP_RV2HV || | |
3022 | o->op_type == OP_ASLICE || o->op_type == OP_HSLICE) | |
79072805 LW |
3023 | return TRUE; |
3024 | ||
11343788 | 3025 | if (o->op_type == OP_PADAV || o->op_type == OP_PADHV) |
93a17b20 LW |
3026 | return TRUE; |
3027 | ||
11343788 | 3028 | if (o->op_type == OP_RV2SV) |
79072805 LW |
3029 | return FALSE; |
3030 | ||
3031 | return FALSE; | |
3032 | } | |
3033 | ||
3034 | OP * | |
864dbfa3 | 3035 | Perl_newASSIGNOP(pTHX_ I32 flags, OP *left, I32 optype, OP *right) |
79072805 | 3036 | { |
11343788 | 3037 | OP *o; |
79072805 | 3038 | |
a0d0e21e | 3039 | if (optype) { |
c963b151 | 3040 | if (optype == OP_ANDASSIGN || optype == OP_ORASSIGN || optype == OP_DORASSIGN) { |
a0d0e21e LW |
3041 | return newLOGOP(optype, 0, |
3042 | mod(scalar(left), optype), | |
3043 | newUNOP(OP_SASSIGN, 0, scalar(right))); | |
3044 | } | |
3045 | else { | |
3046 | return newBINOP(optype, OPf_STACKED, | |
3047 | mod(scalar(left), optype), scalar(right)); | |
3048 | } | |
3049 | } | |
3050 | ||
79072805 | 3051 | if (list_assignment(left)) { |
10c8fecd GS |
3052 | OP *curop; |
3053 | ||
3280af22 NIS |
3054 | PL_modcount = 0; |
3055 | PL_eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ | |
463ee0b2 | 3056 | left = mod(left, OP_AASSIGN); |
3280af22 NIS |
3057 | if (PL_eval_start) |
3058 | PL_eval_start = 0; | |
748a9306 | 3059 | else { |
a0d0e21e LW |
3060 | op_free(left); |
3061 | op_free(right); | |
3062 | return Nullop; | |
3063 | } | |
10c8fecd GS |
3064 | curop = list(force_list(left)); |
3065 | o = newBINOP(OP_AASSIGN, flags, list(force_list(right)), curop); | |
eb160463 | 3066 | o->op_private = (U8)(0 | (flags >> 8)); |
dd2155a4 DM |
3067 | |
3068 | /* PL_generation sorcery: | |
3069 | * an assignment like ($a,$b) = ($c,$d) is easier than | |
3070 | * ($a,$b) = ($c,$a), since there is no need for temporary vars. | |
3071 | * To detect whether there are common vars, the global var | |
3072 | * PL_generation is incremented for each assign op we compile. | |
3073 | * Then, while compiling the assign op, we run through all the | |
3074 | * variables on both sides of the assignment, setting a spare slot | |
3075 | * in each of them to PL_generation. If any of them already have | |
3076 | * that value, we know we've got commonality. We could use a | |
3077 | * single bit marker, but then we'd have to make 2 passes, first | |
3078 | * to clear the flag, then to test and set it. To find somewhere | |
3079 | * to store these values, evil chicanery is done with SvCUR(). | |
3080 | */ | |
3081 | ||
a0d0e21e | 3082 | if (!(left->op_private & OPpLVAL_INTRO)) { |
11343788 | 3083 | OP *lastop = o; |
3280af22 | 3084 | PL_generation++; |
11343788 | 3085 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
22c35a8c | 3086 | if (PL_opargs[curop->op_type] & OA_DANGEROUS) { |
79072805 | 3087 | if (curop->op_type == OP_GV) { |
638eceb6 | 3088 | GV *gv = cGVOPx_gv(curop); |
eb160463 | 3089 | if (gv == PL_defgv || (int)SvCUR(gv) == PL_generation) |
79072805 | 3090 | break; |
3280af22 | 3091 | SvCUR(gv) = PL_generation; |
79072805 | 3092 | } |
748a9306 LW |
3093 | else if (curop->op_type == OP_PADSV || |
3094 | curop->op_type == OP_PADAV || | |
3095 | curop->op_type == OP_PADHV || | |
dd2155a4 DM |
3096 | curop->op_type == OP_PADANY) |
3097 | { | |
3098 | if (PAD_COMPNAME_GEN(curop->op_targ) | |
92251a1e | 3099 | == (STRLEN)PL_generation) |
748a9306 | 3100 | break; |
dd2155a4 DM |
3101 | PAD_COMPNAME_GEN(curop->op_targ) |
3102 | = PL_generation; | |
3103 | ||
748a9306 | 3104 | } |
79072805 LW |
3105 | else if (curop->op_type == OP_RV2CV) |
3106 | break; | |
3107 | else if (curop->op_type == OP_RV2SV || | |
3108 | curop->op_type == OP_RV2AV || | |
3109 | curop->op_type == OP_RV2HV || | |
3110 | curop->op_type == OP_RV2GV) { | |
3111 | if (lastop->op_type != OP_GV) /* funny deref? */ | |
3112 | break; | |
3113 | } | |
1167e5da SM |
3114 | else if (curop->op_type == OP_PUSHRE) { |
3115 | if (((PMOP*)curop)->op_pmreplroot) { | |
b3f5893f | 3116 | #ifdef USE_ITHREADS |
dd2155a4 DM |
3117 | GV *gv = (GV*)PAD_SVl(INT2PTR(PADOFFSET, |
3118 | ((PMOP*)curop)->op_pmreplroot)); | |
b3f5893f | 3119 | #else |
1167e5da | 3120 | GV *gv = (GV*)((PMOP*)curop)->op_pmreplroot; |
b3f5893f | 3121 | #endif |
eb160463 | 3122 | if (gv == PL_defgv || (int)SvCUR(gv) == PL_generation) |
1167e5da | 3123 | break; |
3280af22 | 3124 | SvCUR(gv) = PL_generation; |
b2ffa427 | 3125 | } |
1167e5da | 3126 | } |
79072805 LW |
3127 | else |
3128 | break; | |
3129 | } | |
3130 | lastop = curop; | |
3131 | } | |
11343788 | 3132 | if (curop != o) |
10c8fecd | 3133 | o->op_private |= OPpASSIGN_COMMON; |
79072805 | 3134 | } |
c07a80fd | 3135 | if (right && right->op_type == OP_SPLIT) { |
3136 | OP* tmpop; | |
3137 | if ((tmpop = ((LISTOP*)right)->op_first) && | |
3138 | tmpop->op_type == OP_PUSHRE) | |
3139 | { | |
3140 | PMOP *pm = (PMOP*)tmpop; | |
3141 | if (left->op_type == OP_RV2AV && | |
3142 | !(left->op_private & OPpLVAL_INTRO) && | |
11343788 | 3143 | !(o->op_private & OPpASSIGN_COMMON) ) |
c07a80fd | 3144 | { |
3145 | tmpop = ((UNOP*)left)->op_first; | |
3146 | if (tmpop->op_type == OP_GV && !pm->op_pmreplroot) { | |
971a9dd3 | 3147 | #ifdef USE_ITHREADS |
ba89bb6e | 3148 | pm->op_pmreplroot = INT2PTR(OP*, cPADOPx(tmpop)->op_padix); |
971a9dd3 GS |
3149 | cPADOPx(tmpop)->op_padix = 0; /* steal it */ |
3150 | #else | |
3151 | pm->op_pmreplroot = (OP*)cSVOPx(tmpop)->op_sv; | |
3152 | cSVOPx(tmpop)->op_sv = Nullsv; /* steal it */ | |
3153 | #endif | |
c07a80fd | 3154 | pm->op_pmflags |= PMf_ONCE; |
11343788 | 3155 | tmpop = cUNOPo->op_first; /* to list (nulled) */ |
c07a80fd | 3156 | tmpop = ((UNOP*)tmpop)->op_first; /* to pushmark */ |
3157 | tmpop->op_sibling = Nullop; /* don't free split */ | |
3158 | right->op_next = tmpop->op_next; /* fix starting loc */ | |
11343788 | 3159 | op_free(o); /* blow off assign */ |
54310121 | 3160 | right->op_flags &= ~OPf_WANT; |
a5f75d66 | 3161 | /* "I don't know and I don't care." */ |
c07a80fd | 3162 | return right; |
3163 | } | |
3164 | } | |
3165 | else { | |
e6438c1a | 3166 | if (PL_modcount < RETURN_UNLIMITED_NUMBER && |
c07a80fd | 3167 | ((LISTOP*)right)->op_last->op_type == OP_CONST) |
3168 | { | |
3169 | SV *sv = ((SVOP*)((LISTOP*)right)->op_last)->op_sv; | |
3170 | if (SvIVX(sv) == 0) | |
3280af22 | 3171 | sv_setiv(sv, PL_modcount+1); |
c07a80fd | 3172 | } |
3173 | } | |
3174 | } | |
3175 | } | |
11343788 | 3176 | return o; |
79072805 LW |
3177 | } |
3178 | if (!right) | |
3179 | right = newOP(OP_UNDEF, 0); | |
3180 | if (right->op_type == OP_READLINE) { | |
3181 | right->op_flags |= OPf_STACKED; | |
463ee0b2 | 3182 | return newBINOP(OP_NULL, flags, mod(scalar(left), OP_SASSIGN), scalar(right)); |
79072805 | 3183 | } |
a0d0e21e | 3184 | else { |
3280af22 | 3185 | PL_eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ |
11343788 | 3186 | o = newBINOP(OP_SASSIGN, flags, |
463ee0b2 | 3187 | scalar(right), mod(scalar(left), OP_SASSIGN) ); |
3280af22 NIS |
3188 | if (PL_eval_start) |
3189 | PL_eval_start = 0; | |
748a9306 | 3190 | else { |
11343788 | 3191 | op_free(o); |
a0d0e21e LW |
3192 | return Nullop; |
3193 | } | |
3194 | } | |
11343788 | 3195 | return o; |
79072805 LW |
3196 | } |
3197 | ||
3198 | OP * | |
864dbfa3 | 3199 | Perl_newSTATEOP(pTHX_ I32 flags, char *label, OP *o) |
79072805 | 3200 | { |
bbce6d69 | 3201 | U32 seq = intro_my(); |
79072805 LW |
3202 | register COP *cop; |
3203 | ||
b7dc083c | 3204 | NewOp(1101, cop, 1, COP); |
57843af0 | 3205 | if (PERLDB_LINE && CopLINE(PL_curcop) && PL_curstash != PL_debstash) { |
8990e307 | 3206 | cop->op_type = OP_DBSTATE; |
22c35a8c | 3207 | cop->op_ppaddr = PL_ppaddr[ OP_DBSTATE ]; |
8990e307 LW |
3208 | } |
3209 | else { | |
3210 | cop->op_type = OP_NEXTSTATE; | |
22c35a8c | 3211 | cop->op_ppaddr = PL_ppaddr[ OP_NEXTSTATE ]; |
8990e307 | 3212 | } |
eb160463 GS |
3213 | cop->op_flags = (U8)flags; |
3214 | cop->op_private = (U8)(PL_hints & HINT_PRIVATE_MASK); | |
ff0cee69 | 3215 | #ifdef NATIVE_HINTS |
3216 | cop->op_private |= NATIVE_HINTS; | |
3217 | #endif | |
e24b16f9 | 3218 | PL_compiling.op_private = cop->op_private; |
79072805 LW |
3219 | cop->op_next = (OP*)cop; |
3220 | ||
463ee0b2 LW |
3221 | if (label) { |
3222 | cop->cop_label = label; | |
3280af22 | 3223 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 3224 | } |
bbce6d69 | 3225 | cop->cop_seq = seq; |
3280af22 | 3226 | cop->cop_arybase = PL_curcop->cop_arybase; |
0453d815 | 3227 | if (specialWARN(PL_curcop->cop_warnings)) |
599cee73 | 3228 | cop->cop_warnings = PL_curcop->cop_warnings ; |
1c846c1f | 3229 | else |
599cee73 | 3230 | cop->cop_warnings = newSVsv(PL_curcop->cop_warnings) ; |
ac27b0f5 NIS |
3231 | if (specialCopIO(PL_curcop->cop_io)) |
3232 | cop->cop_io = PL_curcop->cop_io; | |
3233 | else | |
3234 | cop->cop_io = newSVsv(PL_curcop->cop_io) ; | |
599cee73 | 3235 | |
79072805 | 3236 | |
3280af22 | 3237 | if (PL_copline == NOLINE) |
57843af0 | 3238 | CopLINE_set(cop, CopLINE(PL_curcop)); |
79072805 | 3239 | else { |
57843af0 | 3240 | CopLINE_set(cop, PL_copline); |
3280af22 | 3241 | PL_copline = NOLINE; |
79072805 | 3242 | } |
57843af0 | 3243 | #ifdef USE_ITHREADS |
f4dd75d9 | 3244 | CopFILE_set(cop, CopFILE(PL_curcop)); /* XXX share in a pvtable? */ |
57843af0 | 3245 | #else |
f4dd75d9 | 3246 | CopFILEGV_set(cop, CopFILEGV(PL_curcop)); |
57843af0 | 3247 | #endif |
11faa288 | 3248 | CopSTASH_set(cop, PL_curstash); |
79072805 | 3249 | |
3280af22 | 3250 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
cc49e20b | 3251 | SV **svp = av_fetch(CopFILEAV(PL_curcop), (I32)CopLINE(cop), FALSE); |
1eb1540c | 3252 | if (svp && *svp != &PL_sv_undef ) { |
0ac0412a | 3253 | (void)SvIOK_on(*svp); |
57b2e452 | 3254 | SvIVX(*svp) = PTR2IV(cop); |
1eb1540c | 3255 | } |
93a17b20 LW |
3256 | } |
3257 | ||
11343788 | 3258 | return prepend_elem(OP_LINESEQ, (OP*)cop, o); |
79072805 LW |
3259 | } |
3260 | ||
bbce6d69 | 3261 | |
79072805 | 3262 | OP * |
864dbfa3 | 3263 | Perl_newLOGOP(pTHX_ I32 type, I32 flags, OP *first, OP *other) |
79072805 | 3264 | { |
883ffac3 CS |
3265 | return new_logop(type, flags, &first, &other); |
3266 | } | |
3267 | ||
3bd495df | 3268 | STATIC OP * |
cea2e8a9 | 3269 | S_new_logop(pTHX_ I32 type, I32 flags, OP** firstp, OP** otherp) |
883ffac3 | 3270 | { |
79072805 | 3271 | LOGOP *logop; |
11343788 | 3272 | OP *o; |
883ffac3 CS |
3273 | OP *first = *firstp; |
3274 | OP *other = *otherp; | |
79072805 | 3275 | |
a0d0e21e LW |
3276 | if (type == OP_XOR) /* Not short circuit, but here by precedence. */ |
3277 | return newBINOP(type, flags, scalar(first), scalar(other)); | |
3278 | ||
8990e307 | 3279 | scalarboolean(first); |
79072805 LW |
3280 | /* optimize "!a && b" to "a || b", and "!a || b" to "a && b" */ |
3281 | if (first->op_type == OP_NOT && (first->op_flags & OPf_SPECIAL)) { | |
3282 | if (type == OP_AND || type == OP_OR) { | |
3283 | if (type == OP_AND) | |
3284 | type = OP_OR; | |
3285 | else | |
3286 | type = OP_AND; | |
11343788 | 3287 | o = first; |
883ffac3 | 3288 | first = *firstp = cUNOPo->op_first; |
11343788 MB |
3289 | if (o->op_next) |
3290 | first->op_next = o->op_next; | |
3291 | cUNOPo->op_first = Nullop; | |
3292 | op_free(o); | |
79072805 LW |
3293 | } |
3294 | } | |
3295 | if (first->op_type == OP_CONST) { | |
989dfb19 | 3296 | if (ckWARN(WARN_BAREWORD) && (first->op_private & OPpCONST_BARE)) { |
6d5637c3 | 3297 | if (first->op_private & OPpCONST_STRICT) |
989dfb19 K |
3298 | no_bareword_allowed(first); |
3299 | else | |
3300 | Perl_warner(aTHX_ packWARN(WARN_BAREWORD), "Bareword found in conditional"); | |
3301 | } | |
79072805 LW |
3302 | if ((type == OP_AND) == (SvTRUE(((SVOP*)first)->op_sv))) { |
3303 | op_free(first); | |
883ffac3 | 3304 | *firstp = Nullop; |
79072805 LW |
3305 | return other; |
3306 | } | |
3307 | else { | |
3308 | op_free(other); | |
883ffac3 | 3309 | *otherp = Nullop; |
79072805 LW |
3310 | return first; |
3311 | } | |
3312 | } | |
e476b1b5 | 3313 | else if (ckWARN(WARN_MISC) && (first->op_flags & OPf_KIDS)) { |
a6006777 | 3314 | OP *k1 = ((UNOP*)first)->op_first; |
3315 | OP *k2 = k1->op_sibling; | |
3316 | OPCODE warnop = 0; | |
3317 | switch (first->op_type) | |
3318 | { | |
3319 | case OP_NULL: | |
3320 | if (k2 && k2->op_type == OP_READLINE | |
3321 | && (k2->op_flags & OPf_STACKED) | |
1c846c1f | 3322 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
72b16652 | 3323 | { |
a6006777 | 3324 | warnop = k2->op_type; |
72b16652 | 3325 | } |
a6006777 | 3326 | break; |
3327 | ||
3328 | case OP_SASSIGN: | |
68dc0745 | 3329 | if (k1->op_type == OP_READDIR |
3330 | || k1->op_type == OP_GLOB | |
72b16652 | 3331 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) |
68dc0745 | 3332 | || k1->op_type == OP_EACH) |
72b16652 GS |
3333 | { |
3334 | warnop = ((k1->op_type == OP_NULL) | |
eb160463 | 3335 | ? (OPCODE)k1->op_targ : k1->op_type); |
72b16652 | 3336 | } |
a6006777 | 3337 | break; |
3338 | } | |
8ebc5c01 | 3339 | if (warnop) { |
57843af0 GS |
3340 | line_t oldline = CopLINE(PL_curcop); |
3341 | CopLINE_set(PL_curcop, PL_copline); | |
9014280d | 3342 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
599cee73 | 3343 | "Value of %s%s can be \"0\"; test with defined()", |
22c35a8c | 3344 | PL_op_desc[warnop], |
68dc0745 | 3345 | ((warnop == OP_READLINE || warnop == OP_GLOB) |
3346 | ? " construct" : "() operator")); | |
57843af0 | 3347 | CopLINE_set(PL_curcop, oldline); |
8ebc5c01 | 3348 | } |
a6006777 | 3349 | } |
79072805 LW |
3350 | |
3351 | if (!other) | |
3352 | return first; | |
3353 | ||
c963b151 | 3354 | if (type == OP_ANDASSIGN || type == OP_ORASSIGN || type == OP_DORASSIGN) |
a0d0e21e LW |
3355 | other->op_private |= OPpASSIGN_BACKWARDS; /* other is an OP_SASSIGN */ |
3356 | ||
b7dc083c | 3357 | NewOp(1101, logop, 1, LOGOP); |
79072805 | 3358 | |
eb160463 | 3359 | logop->op_type = (OPCODE)type; |
22c35a8c | 3360 | logop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
3361 | logop->op_first = first; |
3362 | logop->op_flags = flags | OPf_KIDS; | |
3363 | logop->op_other = LINKLIST(other); | |
eb160463 | 3364 | logop->op_private = (U8)(1 | (flags >> 8)); |
79072805 LW |
3365 | |
3366 | /* establish postfix order */ | |
3367 | logop->op_next = LINKLIST(first); | |
3368 | first->op_next = (OP*)logop; | |
3369 | first->op_sibling = other; | |
3370 | ||
11343788 MB |
3371 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
3372 | other->op_next = o; | |
79072805 | 3373 | |
11343788 | 3374 | return o; |
79072805 LW |
3375 | } |
3376 | ||
3377 | OP * | |
864dbfa3 | 3378 | Perl_newCONDOP(pTHX_ I32 flags, OP *first, OP *trueop, OP *falseop) |
79072805 | 3379 | { |
1a67a97c SM |
3380 | LOGOP *logop; |
3381 | OP *start; | |
11343788 | 3382 | OP *o; |
79072805 | 3383 | |
b1cb66bf | 3384 | if (!falseop) |
3385 | return newLOGOP(OP_AND, 0, first, trueop); | |
3386 | if (!trueop) | |
3387 | return newLOGOP(OP_OR, 0, first, falseop); | |
79072805 | 3388 | |
8990e307 | 3389 | scalarboolean(first); |
79072805 | 3390 | if (first->op_type == OP_CONST) { |
2bc6235c K |
3391 | if (first->op_private & OPpCONST_BARE && |
3392 | first->op_private & OPpCONST_STRICT) { | |
3393 | no_bareword_allowed(first); | |
3394 | } | |
79072805 LW |
3395 | if (SvTRUE(((SVOP*)first)->op_sv)) { |
3396 | op_free(first); | |
b1cb66bf | 3397 | op_free(falseop); |
3398 | return trueop; | |
79072805 LW |
3399 | } |
3400 | else { | |
3401 | op_free(first); | |
b1cb66bf | 3402 | op_free(trueop); |
3403 | return falseop; | |
79072805 LW |
3404 | } |
3405 | } | |
1a67a97c SM |
3406 | NewOp(1101, logop, 1, LOGOP); |
3407 | logop->op_type = OP_COND_EXPR; | |
3408 | logop->op_ppaddr = PL_ppaddr[OP_COND_EXPR]; | |
3409 | logop->op_first = first; | |
3410 | logop->op_flags = flags | OPf_KIDS; | |
eb160463 | 3411 | logop->op_private = (U8)(1 | (flags >> 8)); |
1a67a97c SM |
3412 | logop->op_other = LINKLIST(trueop); |
3413 | logop->op_next = LINKLIST(falseop); | |
79072805 | 3414 | |
79072805 LW |
3415 | |
3416 | /* establish postfix order */ | |
1a67a97c SM |
3417 | start = LINKLIST(first); |
3418 | first->op_next = (OP*)logop; | |
79072805 | 3419 | |
b1cb66bf | 3420 | first->op_sibling = trueop; |
3421 | trueop->op_sibling = falseop; | |
1a67a97c | 3422 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
79072805 | 3423 | |
1a67a97c | 3424 | trueop->op_next = falseop->op_next = o; |
79072805 | 3425 | |
1a67a97c | 3426 | o->op_next = start; |
11343788 | 3427 | return o; |
79072805 LW |
3428 | } |
3429 | ||
3430 | OP * | |
864dbfa3 | 3431 | Perl_newRANGE(pTHX_ I32 flags, OP *left, OP *right) |
79072805 | 3432 | { |
1a67a97c | 3433 | LOGOP *range; |
79072805 LW |
3434 | OP *flip; |
3435 | OP *flop; | |
1a67a97c | 3436 | OP *leftstart; |
11343788 | 3437 | OP *o; |
79072805 | 3438 | |
1a67a97c | 3439 | NewOp(1101, range, 1, LOGOP); |
79072805 | 3440 | |
1a67a97c SM |
3441 | range->op_type = OP_RANGE; |
3442 | range->op_ppaddr = PL_ppaddr[OP_RANGE]; | |
3443 | range->op_first = left; | |
3444 | range->op_flags = OPf_KIDS; | |
3445 | leftstart = LINKLIST(left); | |
3446 | range->op_other = LINKLIST(right); | |
eb160463 | 3447 | range->op_private = (U8)(1 | (flags >> 8)); |
79072805 LW |
3448 | |
3449 | left->op_sibling = right; | |
3450 | ||
1a67a97c SM |
3451 | range->op_next = (OP*)range; |
3452 | flip = newUNOP(OP_FLIP, flags, (OP*)range); | |
79072805 | 3453 | flop = newUNOP(OP_FLOP, 0, flip); |
11343788 | 3454 | o = newUNOP(OP_NULL, 0, flop); |
79072805 | 3455 | linklist(flop); |
1a67a97c | 3456 | range->op_next = leftstart; |
79072805 LW |
3457 | |
3458 | left->op_next = flip; | |
3459 | right->op_next = flop; | |
3460 | ||
1a67a97c SM |
3461 | range->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
3462 | sv_upgrade(PAD_SV(range->op_targ), SVt_PVNV); | |
ed6116ce | 3463 | flip->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 LW |
3464 | sv_upgrade(PAD_SV(flip->op_targ), SVt_PVNV); |
3465 | ||
3466 | flip->op_private = left->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
3467 | flop->op_private = right->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
3468 | ||
11343788 | 3469 | flip->op_next = o; |
79072805 | 3470 | if (!flip->op_private || !flop->op_private) |
11343788 | 3471 | linklist(o); /* blow off optimizer unless constant */ |
79072805 | 3472 | |
11343788 | 3473 | return o; |
79072805 LW |
3474 | } |
3475 | ||
3476 | OP * | |
864dbfa3 | 3477 | Perl_newLOOPOP(pTHX_ I32 flags, I32 debuggable, OP *expr, OP *block) |
79072805 | 3478 | { |
463ee0b2 | 3479 | OP* listop; |
11343788 | 3480 | OP* o; |
463ee0b2 | 3481 | int once = block && block->op_flags & OPf_SPECIAL && |
a0d0e21e | 3482 | (block->op_type == OP_ENTERSUB || block->op_type == OP_NULL); |
93a17b20 | 3483 | |
463ee0b2 LW |
3484 | if (expr) { |
3485 | if (once && expr->op_type == OP_CONST && !SvTRUE(((SVOP*)expr)->op_sv)) | |
3486 | return block; /* do {} while 0 does once */ | |
fb73857a | 3487 | if (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB |
3488 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB)) { | |
774d564b | 3489 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 3490 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 GS |
3491 | } else if (expr->op_flags & OPf_KIDS) { |
3492 | OP *k1 = ((UNOP*)expr)->op_first; | |
3493 | OP *k2 = (k1) ? k1->op_sibling : NULL; | |
3494 | switch (expr->op_type) { | |
1c846c1f | 3495 | case OP_NULL: |
55d729e4 GS |
3496 | if (k2 && k2->op_type == OP_READLINE |
3497 | && (k2->op_flags & OPf_STACKED) | |
1c846c1f | 3498 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
55d729e4 | 3499 | expr = newUNOP(OP_DEFINED, 0, expr); |
1c846c1f | 3500 | break; |
55d729e4 GS |
3501 | |
3502 | case OP_SASSIGN: | |
3503 | if (k1->op_type == OP_READDIR | |
3504 | || k1->op_type == OP_GLOB | |
6531c3e6 | 3505 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) |
55d729e4 GS |
3506 | || k1->op_type == OP_EACH) |
3507 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3508 | break; | |
3509 | } | |
774d564b | 3510 | } |
463ee0b2 | 3511 | } |
93a17b20 | 3512 | |
8990e307 | 3513 | listop = append_elem(OP_LINESEQ, block, newOP(OP_UNSTACK, 0)); |
883ffac3 | 3514 | o = new_logop(OP_AND, 0, &expr, &listop); |
463ee0b2 | 3515 | |
883ffac3 CS |
3516 | if (listop) |
3517 | ((LISTOP*)listop)->op_last->op_next = LINKLIST(o); | |
79072805 | 3518 | |
11343788 MB |
3519 | if (once && o != listop) |
3520 | o->op_next = ((LOGOP*)cUNOPo->op_first)->op_other; | |
79072805 | 3521 | |
11343788 MB |
3522 | if (o == listop) |
3523 | o = newUNOP(OP_NULL, 0, o); /* or do {} while 1 loses outer block */ | |
748a9306 | 3524 | |
11343788 MB |
3525 | o->op_flags |= flags; |