Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* op.c |
79072805 | 2 | * |
9607fc9c | 3 | * Copyright (c) 1991-1997, 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 | ||
18 | #include "EXTERN.h" | |
19 | #include "perl.h" | |
20 | ||
76e3520e GS |
21 | #ifdef PERL_OBJECT |
22 | #define CHECKCALL this->*check | |
23 | #else | |
24 | #define CHECKCALL *check | |
25 | #endif | |
26 | ||
e50aee73 | 27 | /* |
5dc0d613 | 28 | * In the following definition, the ", Nullop" is just to make the compiler |
a5f75d66 | 29 | * think the expression is of the right type: croak actually does a Siglongjmp. |
e50aee73 | 30 | */ |
11343788 | 31 | #define CHECKOP(type,o) \ |
3280af22 | 32 | ((PL_op_mask && PL_op_mask[type]) \ |
5dc0d613 | 33 | ? ( op_free((OP*)o), \ |
28757baa | 34 | croak("%s trapped by operation mask", op_desc[type]), \ |
35 | Nullop ) \ | |
76e3520e | 36 | : (CHECKCALL[type])((OP*)o)) |
e50aee73 | 37 | |
76e3520e GS |
38 | static bool scalar_mod_type _((OP *o, I32 type)); |
39 | #ifndef PERL_OBJECT | |
11343788 | 40 | static I32 list_assignment _((OP *o)); |
3bc5dc61 | 41 | static void bad_type _((I32 n, char *t, char *name, OP *kid)); |
11343788 MB |
42 | static OP *modkids _((OP *o, I32 type)); |
43 | static OP *no_fh_allowed _((OP *o)); | |
44 | static OP *scalarboolean _((OP *o)); | |
45 | static OP *too_few_arguments _((OP *o, char* name)); | |
46 | static OP *too_many_arguments _((OP *o, char* name)); | |
47 | static void null _((OP* o)); | |
bbce6d69 | 48 | static PADOFFSET pad_findlex _((char* name, PADOFFSET newoff, U32 seq, |
748a9306 | 49 | CV* startcv, I32 cx_ix)); |
54b9620d | 50 | static OP *newDEFSVOP _((void)); |
883ffac3 | 51 | static OP *new_logop _((I32 type, I32 flags, OP **firstp, OP **otherp)); |
76e3520e | 52 | #endif |
79072805 | 53 | |
76e3520e | 54 | STATIC char* |
8ac85365 | 55 | gv_ename(GV *gv) |
4633a7c4 LW |
56 | { |
57 | SV* tmpsv = sv_newmortal(); | |
46fc3d4c | 58 | gv_efullname3(tmpsv, gv, Nullch); |
3280af22 | 59 | return SvPV(tmpsv,PL_na); |
4633a7c4 LW |
60 | } |
61 | ||
76e3520e | 62 | STATIC OP * |
8ac85365 | 63 | no_fh_allowed(OP *o) |
79072805 | 64 | { |
46fc3d4c | 65 | yyerror(form("Missing comma after first argument to %s function", |
5196be3e | 66 | op_desc[o->op_type])); |
11343788 | 67 | return o; |
79072805 LW |
68 | } |
69 | ||
76e3520e | 70 | STATIC OP * |
8ac85365 | 71 | too_few_arguments(OP *o, char *name) |
79072805 | 72 | { |
46fc3d4c | 73 | yyerror(form("Not enough arguments for %s", name)); |
11343788 | 74 | return o; |
79072805 LW |
75 | } |
76 | ||
76e3520e | 77 | STATIC OP * |
8ac85365 | 78 | too_many_arguments(OP *o, char *name) |
79072805 | 79 | { |
46fc3d4c | 80 | yyerror(form("Too many arguments for %s", name)); |
11343788 | 81 | return o; |
79072805 LW |
82 | } |
83 | ||
76e3520e | 84 | STATIC void |
8ac85365 | 85 | bad_type(I32 n, char *t, char *name, OP *kid) |
8990e307 | 86 | { |
46fc3d4c | 87 | yyerror(form("Type of arg %d to %s must be %s (not %s)", |
88 | (int)n, name, t, op_desc[kid->op_type])); | |
8990e307 LW |
89 | } |
90 | ||
a0d0e21e | 91 | void |
8ac85365 | 92 | assertref(OP *o) |
a0d0e21e | 93 | { |
11343788 | 94 | int type = o->op_type; |
a0d0e21e | 95 | if (type != OP_AELEM && type != OP_HELEM) { |
46fc3d4c | 96 | yyerror(form("Can't use subscript on %s", op_desc[type])); |
bde90e66 | 97 | if (type == OP_ENTERSUB || type == OP_RV2HV || type == OP_PADHV) { |
9c82454c | 98 | dTHR; |
bde90e66 HS |
99 | SV *msg = sv_2mortal( |
100 | newSVpvf("(Did you mean $ or @ instead of %c?)\n", | |
101 | type == OP_ENTERSUB ? '&' : '%')); | |
3280af22 | 102 | if (PL_in_eval & 2) |
bde90e66 | 103 | warn("%_", msg); |
3280af22 NIS |
104 | else if (PL_in_eval) |
105 | sv_catsv(GvSV(PL_errgv), msg); | |
bde90e66 HS |
106 | else |
107 | PerlIO_write(PerlIO_stderr(), SvPVX(msg), SvCUR(msg)); | |
108 | } | |
a0d0e21e LW |
109 | } |
110 | } | |
111 | ||
79072805 LW |
112 | /* "register" allocation */ |
113 | ||
114 | PADOFFSET | |
8ac85365 | 115 | pad_allocmy(char *name) |
93a17b20 | 116 | { |
11343788 | 117 | dTHR; |
a0d0e21e LW |
118 | PADOFFSET off; |
119 | SV *sv; | |
120 | ||
121 | if (!(isALPHA(name[1]) || name[1] == '_' && (int)strlen(name) > 2)) { | |
46fc3d4c | 122 | if (!isPRINT(name[1])) { |
123 | name[3] = '\0'; | |
124 | name[2] = toCTRL(name[1]); | |
125 | name[1] = '^'; | |
126 | } | |
a0d0e21e LW |
127 | croak("Can't use global %s in \"my\"",name); |
128 | } | |
3280af22 NIS |
129 | if (PL_dowarn && AvFILLp(PL_comppad_name) >= 0) { |
130 | SV **svp = AvARRAY(PL_comppad_name); | |
131 | for (off = AvFILLp(PL_comppad_name); off > PL_comppad_name_floor; off--) { | |
b1cb66bf | 132 | if ((sv = svp[off]) |
3280af22 | 133 | && sv != &PL_sv_undef |
b1cb66bf | 134 | && SvIVX(sv) == 999999999 /* var is in open scope */ |
135 | && strEQ(name, SvPVX(sv))) | |
136 | { | |
137 | warn("\"my\" variable %s masks earlier declaration in same scope", name); | |
138 | break; | |
139 | } | |
140 | } | |
141 | } | |
a0d0e21e LW |
142 | off = pad_alloc(OP_PADSV, SVs_PADMY); |
143 | sv = NEWSV(1102,0); | |
93a17b20 LW |
144 | sv_upgrade(sv, SVt_PVNV); |
145 | sv_setpv(sv, name); | |
3280af22 | 146 | if (PL_in_my_stash) { |
c750a3ec MB |
147 | if (*name != '$') |
148 | croak("Can't declare class for non-scalar %s in \"my\"",name); | |
149 | SvOBJECT_on(sv); | |
150 | (void)SvUPGRADE(sv, SVt_PVMG); | |
3280af22 NIS |
151 | SvSTASH(sv) = (HV*)SvREFCNT_inc(PL_in_my_stash); |
152 | PL_sv_objcount++; | |
c750a3ec | 153 | } |
3280af22 | 154 | av_store(PL_comppad_name, off, sv); |
748a9306 | 155 | SvNVX(sv) = (double)999999999; |
8990e307 | 156 | SvIVX(sv) = 0; /* Not yet introduced--see newSTATEOP */ |
3280af22 NIS |
157 | if (!PL_min_intro_pending) |
158 | PL_min_intro_pending = off; | |
159 | PL_max_intro_pending = off; | |
93a17b20 | 160 | if (*name == '@') |
3280af22 | 161 | av_store(PL_comppad, off, (SV*)newAV()); |
93a17b20 | 162 | else if (*name == '%') |
3280af22 NIS |
163 | av_store(PL_comppad, off, (SV*)newHV()); |
164 | SvPADMY_on(PL_curpad[off]); | |
93a17b20 LW |
165 | return off; |
166 | } | |
167 | ||
76e3520e | 168 | STATIC PADOFFSET |
bbce6d69 | 169 | pad_findlex(char *name, PADOFFSET newoff, U32 seq, CV* startcv, I32 cx_ix) |
93a17b20 | 170 | { |
11343788 | 171 | dTHR; |
748a9306 | 172 | CV *cv; |
93a17b20 LW |
173 | I32 off; |
174 | SV *sv; | |
93a17b20 | 175 | register I32 i; |
c09156bb | 176 | register PERL_CONTEXT *cx; |
a0d0e21e | 177 | int saweval; |
93a17b20 | 178 | |
748a9306 | 179 | for (cv = startcv; cv; cv = CvOUTSIDE(cv)) { |
4fdae800 | 180 | AV *curlist = CvPADLIST(cv); |
181 | SV **svp = av_fetch(curlist, 0, FALSE); | |
748a9306 | 182 | AV *curname; |
4fdae800 | 183 | |
3280af22 | 184 | if (!svp || *svp == &PL_sv_undef) |
4633a7c4 | 185 | continue; |
748a9306 LW |
186 | curname = (AV*)*svp; |
187 | svp = AvARRAY(curname); | |
93965878 | 188 | for (off = AvFILLp(curname); off > 0; off--) { |
748a9306 | 189 | if ((sv = svp[off]) && |
3280af22 | 190 | sv != &PL_sv_undef && |
748a9306 | 191 | seq <= SvIVX(sv) && |
13826f2c | 192 | seq > I_32(SvNVX(sv)) && |
748a9306 LW |
193 | strEQ(SvPVX(sv), name)) |
194 | { | |
5f05dabc | 195 | I32 depth; |
196 | AV *oldpad; | |
197 | SV *oldsv; | |
198 | ||
199 | depth = CvDEPTH(cv); | |
200 | if (!depth) { | |
9607fc9c | 201 | if (newoff) { |
202 | if (SvFAKE(sv)) | |
203 | continue; | |
4fdae800 | 204 | return 0; /* don't clone from inactive stack frame */ |
9607fc9c | 205 | } |
5f05dabc | 206 | depth = 1; |
207 | } | |
208 | oldpad = (AV*)*av_fetch(curlist, depth, FALSE); | |
209 | oldsv = *av_fetch(oldpad, off, TRUE); | |
748a9306 | 210 | if (!newoff) { /* Not a mere clone operation. */ |
9607fc9c | 211 | SV *namesv = NEWSV(1103,0); |
748a9306 | 212 | newoff = pad_alloc(OP_PADSV, SVs_PADMY); |
9607fc9c | 213 | sv_upgrade(namesv, SVt_PVNV); |
214 | sv_setpv(namesv, name); | |
3280af22 NIS |
215 | av_store(PL_comppad_name, newoff, namesv); |
216 | SvNVX(namesv) = (double)PL_curcop->cop_seq; | |
9607fc9c | 217 | SvIVX(namesv) = 999999999; /* A ref, intro immediately */ |
218 | SvFAKE_on(namesv); /* A ref, not a real var */ | |
3280af22 | 219 | if (CvANON(PL_compcv) || SvTYPE(PL_compcv) == SVt_PVFM) { |
28757baa | 220 | /* "It's closures all the way down." */ |
3280af22 | 221 | CvCLONE_on(PL_compcv); |
54310121 | 222 | if (cv == startcv) { |
3280af22 | 223 | if (CvANON(PL_compcv)) |
54310121 | 224 | oldsv = Nullsv; /* no need to keep ref */ |
225 | } | |
226 | else { | |
28757baa | 227 | CV *bcv; |
228 | for (bcv = startcv; | |
229 | bcv && bcv != cv && !CvCLONE(bcv); | |
230 | bcv = CvOUTSIDE(bcv)) { | |
231 | if (CvANON(bcv)) | |
232 | CvCLONE_on(bcv); | |
233 | else { | |
3280af22 | 234 | if (PL_dowarn && !CvUNIQUE(cv)) |
44a8e56a | 235 | warn( |
236 | "Variable \"%s\" may be unavailable", | |
28757baa | 237 | name); |
238 | break; | |
239 | } | |
240 | } | |
241 | } | |
242 | } | |
3280af22 NIS |
243 | else if (!CvUNIQUE(PL_compcv)) { |
244 | if (PL_dowarn && !SvFAKE(sv) && !CvUNIQUE(cv)) | |
44a8e56a | 245 | warn("Variable \"%s\" will not stay shared", name); |
5f05dabc | 246 | } |
748a9306 | 247 | } |
3280af22 | 248 | av_store(PL_comppad, newoff, SvREFCNT_inc(oldsv)); |
748a9306 LW |
249 | return newoff; |
250 | } | |
93a17b20 LW |
251 | } |
252 | } | |
253 | ||
254 | /* Nothing in current lexical context--try eval's context, if any. | |
255 | * This is necessary to let the perldb get at lexically scoped variables. | |
256 | * XXX This will also probably interact badly with eval tree caching. | |
257 | */ | |
258 | ||
a0d0e21e | 259 | saweval = 0; |
748a9306 | 260 | for (i = cx_ix; i >= 0; i--) { |
93a17b20 LW |
261 | cx = &cxstack[i]; |
262 | switch (cx->cx_type) { | |
263 | default: | |
748a9306 LW |
264 | if (i == 0 && saweval) { |
265 | seq = cxstack[saweval].blk_oldcop->cop_seq; | |
3280af22 | 266 | return pad_findlex(name, newoff, seq, PL_main_cv, 0); |
748a9306 | 267 | } |
93a17b20 LW |
268 | break; |
269 | case CXt_EVAL: | |
44a8e56a | 270 | switch (cx->blk_eval.old_op_type) { |
271 | case OP_ENTEREVAL: | |
272 | saweval = i; | |
273 | break; | |
274 | case OP_REQUIRE: | |
275 | /* require must have its own scope */ | |
276 | return 0; | |
277 | } | |
93a17b20 LW |
278 | break; |
279 | case CXt_SUB: | |
280 | if (!saweval) | |
281 | return 0; | |
282 | cv = cx->blk_sub.cv; | |
3280af22 | 283 | if (PL_debstash && CvSTASH(cv) == PL_debstash) { /* ignore DB'* scope */ |
748a9306 | 284 | saweval = i; /* so we know where we were called from */ |
93a17b20 | 285 | continue; |
93a17b20 | 286 | } |
748a9306 LW |
287 | seq = cxstack[saweval].blk_oldcop->cop_seq; |
288 | return pad_findlex(name, newoff, seq, cv, i-1); | |
93a17b20 LW |
289 | } |
290 | } | |
291 | ||
748a9306 LW |
292 | return 0; |
293 | } | |
a0d0e21e | 294 | |
748a9306 | 295 | PADOFFSET |
8ac85365 | 296 | pad_findmy(char *name) |
748a9306 | 297 | { |
11343788 | 298 | dTHR; |
748a9306 | 299 | I32 off; |
54310121 | 300 | I32 pendoff = 0; |
748a9306 | 301 | SV *sv; |
3280af22 NIS |
302 | SV **svp = AvARRAY(PL_comppad_name); |
303 | U32 seq = PL_cop_seqmax; | |
748a9306 | 304 | |
11343788 MB |
305 | #ifdef USE_THREADS |
306 | /* | |
307 | * Special case to get lexical (and hence per-thread) @_. | |
308 | * XXX I need to find out how to tell at parse-time whether use | |
309 | * of @_ should refer to a lexical (from a sub) or defgv (global | |
310 | * scope and maybe weird sub-ish things like formats). See | |
311 | * startsub in perly.y. It's possible that @_ could be lexical | |
312 | * (at least from subs) even in non-threaded perl. | |
313 | */ | |
314 | if (strEQ(name, "@_")) | |
315 | return 0; /* success. (NOT_IN_PAD indicates failure) */ | |
316 | #endif /* USE_THREADS */ | |
317 | ||
748a9306 | 318 | /* The one we're looking for is probably just before comppad_name_fill. */ |
3280af22 | 319 | for (off = AvFILLp(PL_comppad_name); off > 0; off--) { |
a0d0e21e | 320 | if ((sv = svp[off]) && |
3280af22 | 321 | sv != &PL_sv_undef && |
54310121 | 322 | (!SvIVX(sv) || |
323 | (seq <= SvIVX(sv) && | |
324 | seq > I_32(SvNVX(sv)))) && | |
a0d0e21e LW |
325 | strEQ(SvPVX(sv), name)) |
326 | { | |
54310121 | 327 | if (SvIVX(sv)) |
328 | return (PADOFFSET)off; | |
329 | pendoff = off; /* this pending def. will override import */ | |
a0d0e21e LW |
330 | } |
331 | } | |
748a9306 LW |
332 | |
333 | /* See if it's in a nested scope */ | |
3280af22 | 334 | off = pad_findlex(name, 0, seq, CvOUTSIDE(PL_compcv), cxstack_ix); |
54310121 | 335 | if (off) { |
336 | /* If there is a pending local definition, this new alias must die */ | |
337 | if (pendoff) | |
3280af22 | 338 | SvIVX(AvARRAY(PL_comppad_name)[off]) = seq; |
11343788 | 339 | return off; /* pad_findlex returns 0 for failure...*/ |
54310121 | 340 | } |
11343788 | 341 | return NOT_IN_PAD; /* ...but we return NOT_IN_PAD for failure */ |
93a17b20 LW |
342 | } |
343 | ||
344 | void | |
8ac85365 | 345 | pad_leavemy(I32 fill) |
93a17b20 LW |
346 | { |
347 | I32 off; | |
3280af22 | 348 | SV **svp = AvARRAY(PL_comppad_name); |
93a17b20 | 349 | SV *sv; |
3280af22 NIS |
350 | if (PL_min_intro_pending && fill < PL_min_intro_pending) { |
351 | for (off = PL_max_intro_pending; off >= PL_min_intro_pending; off--) { | |
352 | if ((sv = svp[off]) && sv != &PL_sv_undef) | |
8990e307 LW |
353 | warn("%s never introduced", SvPVX(sv)); |
354 | } | |
355 | } | |
356 | /* "Deintroduce" my variables that are leaving with this scope. */ | |
3280af22 NIS |
357 | for (off = AvFILLp(PL_comppad_name); off > fill; off--) { |
358 | if ((sv = svp[off]) && sv != &PL_sv_undef && SvIVX(sv) == 999999999) | |
359 | SvIVX(sv) = PL_cop_seqmax; | |
93a17b20 LW |
360 | } |
361 | } | |
362 | ||
363 | PADOFFSET | |
8ac85365 | 364 | pad_alloc(I32 optype, U32 tmptype) |
79072805 | 365 | { |
11343788 | 366 | dTHR; |
79072805 LW |
367 | SV *sv; |
368 | I32 retval; | |
369 | ||
3280af22 | 370 | if (AvARRAY(PL_comppad) != PL_curpad) |
463ee0b2 | 371 | croak("panic: pad_alloc"); |
3280af22 | 372 | if (PL_pad_reset_pending) |
a0d0e21e | 373 | pad_reset(); |
ed6116ce | 374 | if (tmptype & SVs_PADMY) { |
79072805 | 375 | do { |
3280af22 | 376 | sv = *av_fetch(PL_comppad, AvFILLp(PL_comppad) + 1, TRUE); |
ed6116ce | 377 | } while (SvPADBUSY(sv)); /* need a fresh one */ |
3280af22 | 378 | retval = AvFILLp(PL_comppad); |
79072805 LW |
379 | } |
380 | else { | |
3280af22 NIS |
381 | SV **names = AvARRAY(PL_comppad_name); |
382 | SSize_t names_fill = AvFILLp(PL_comppad_name); | |
bbce6d69 | 383 | for (;;) { |
384 | /* | |
385 | * "foreach" index vars temporarily become aliases to non-"my" | |
386 | * values. Thus we must skip, not just pad values that are | |
387 | * marked as current pad values, but also those with names. | |
388 | */ | |
3280af22 NIS |
389 | if (++PL_padix <= names_fill && |
390 | (sv = names[PL_padix]) && sv != &PL_sv_undef) | |
bbce6d69 | 391 | continue; |
3280af22 | 392 | sv = *av_fetch(PL_comppad, PL_padix, TRUE); |
bbce6d69 | 393 | if (!(SvFLAGS(sv) & (SVs_PADTMP|SVs_PADMY))) |
394 | break; | |
395 | } | |
3280af22 | 396 | retval = PL_padix; |
79072805 | 397 | } |
8990e307 | 398 | SvFLAGS(sv) |= tmptype; |
3280af22 | 399 | PL_curpad = AvARRAY(PL_comppad); |
11343788 | 400 | #ifdef USE_THREADS |
5dc0d613 | 401 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx alloc %ld for %s\n", |
533c011a | 402 | (unsigned long) thr, (unsigned long) PL_curpad, |
5dc0d613 | 403 | (long) retval, op_name[optype])); |
11343788 | 404 | #else |
d9bb4600 | 405 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx alloc %ld for %s\n", |
3280af22 | 406 | (unsigned long) PL_curpad, |
5dc0d613 | 407 | (long) retval, op_name[optype])); |
11343788 | 408 | #endif /* USE_THREADS */ |
79072805 LW |
409 | return (PADOFFSET)retval; |
410 | } | |
411 | ||
412 | SV * | |
8990e307 | 413 | pad_sv(PADOFFSET po) |
79072805 | 414 | { |
11343788 MB |
415 | dTHR; |
416 | #ifdef USE_THREADS | |
5dc0d613 | 417 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx sv %d\n", |
533c011a | 418 | (unsigned long) thr, (unsigned long) PL_curpad, po)); |
11343788 | 419 | #else |
79072805 | 420 | if (!po) |
463ee0b2 | 421 | croak("panic: pad_sv po"); |
d9bb4600 | 422 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx sv %d\n", |
3280af22 | 423 | (unsigned long) PL_curpad, po)); |
11343788 | 424 | #endif /* USE_THREADS */ |
3280af22 | 425 | return PL_curpad[po]; /* eventually we'll turn this into a macro */ |
79072805 LW |
426 | } |
427 | ||
428 | void | |
8990e307 | 429 | pad_free(PADOFFSET po) |
79072805 | 430 | { |
11343788 | 431 | dTHR; |
3280af22 | 432 | if (!PL_curpad) |
a0d0e21e | 433 | return; |
3280af22 | 434 | if (AvARRAY(PL_comppad) != PL_curpad) |
463ee0b2 | 435 | croak("panic: pad_free curpad"); |
79072805 | 436 | if (!po) |
463ee0b2 | 437 | croak("panic: pad_free po"); |
11343788 | 438 | #ifdef USE_THREADS |
5dc0d613 | 439 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx free %d\n", |
533c011a | 440 | (unsigned long) thr, (unsigned long) PL_curpad, po)); |
11343788 | 441 | #else |
d9bb4600 | 442 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx free %d\n", |
3280af22 | 443 | (unsigned long) PL_curpad, po)); |
11343788 | 444 | #endif /* USE_THREADS */ |
3280af22 NIS |
445 | if (PL_curpad[po] && PL_curpad[po] != &PL_sv_undef) |
446 | SvPADTMP_off(PL_curpad[po]); | |
447 | if ((I32)po < PL_padix) | |
448 | PL_padix = po - 1; | |
79072805 LW |
449 | } |
450 | ||
451 | void | |
8990e307 | 452 | pad_swipe(PADOFFSET po) |
79072805 | 453 | { |
11343788 | 454 | dTHR; |
3280af22 | 455 | if (AvARRAY(PL_comppad) != PL_curpad) |
463ee0b2 | 456 | croak("panic: pad_swipe curpad"); |
79072805 | 457 | if (!po) |
463ee0b2 | 458 | croak("panic: pad_swipe po"); |
11343788 | 459 | #ifdef USE_THREADS |
5dc0d613 | 460 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx swipe %d\n", |
533c011a | 461 | (unsigned long) thr, (unsigned long) PL_curpad, po)); |
11343788 | 462 | #else |
d9bb4600 | 463 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx swipe %d\n", |
3280af22 | 464 | (unsigned long) PL_curpad, po)); |
11343788 | 465 | #endif /* USE_THREADS */ |
3280af22 NIS |
466 | SvPADTMP_off(PL_curpad[po]); |
467 | PL_curpad[po] = NEWSV(1107,0); | |
468 | SvPADTMP_on(PL_curpad[po]); | |
469 | if ((I32)po < PL_padix) | |
470 | PL_padix = po - 1; | |
79072805 LW |
471 | } |
472 | ||
d9bb4600 GS |
473 | /* XXX pad_reset() is currently disabled because it results in serious bugs. |
474 | * It causes pad temp TARGs to be shared between OPs. Since TARGs are pushed | |
475 | * on the stack by OPs that use them, there are several ways to get an alias | |
476 | * to a shared TARG. Such an alias will change randomly and unpredictably. | |
477 | * We avoid doing this until we can think of a Better Way. | |
478 | * GSAR 97-10-29 */ | |
79072805 | 479 | void |
8ac85365 | 480 | pad_reset(void) |
79072805 | 481 | { |
d9bb4600 | 482 | #ifdef USE_BROKEN_PAD_RESET |
11343788 | 483 | dTHR; |
79072805 LW |
484 | register I32 po; |
485 | ||
6b88bc9c | 486 | if (AvARRAY(PL_comppad) != PL_curpad) |
463ee0b2 | 487 | croak("panic: pad_reset curpad"); |
11343788 | 488 | #ifdef USE_THREADS |
5dc0d613 | 489 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx reset\n", |
6b88bc9c | 490 | (unsigned long) thr, (unsigned long) PL_curpad)); |
11343788 | 491 | #else |
d9bb4600 | 492 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx reset\n", |
6b88bc9c | 493 | (unsigned long) PL_curpad)); |
11343788 | 494 | #endif /* USE_THREADS */ |
6b88bc9c GS |
495 | if (!PL_tainting) { /* Can't mix tainted and non-tainted temporaries. */ |
496 | for (po = AvMAX(PL_comppad); po > PL_padix_floor; po--) { | |
497 | if (PL_curpad[po] && !SvIMMORTAL(PL_curpad[po])) | |
498 | SvPADTMP_off(PL_curpad[po]); | |
748a9306 | 499 | } |
6b88bc9c | 500 | PL_padix = PL_padix_floor; |
79072805 | 501 | } |
d9bb4600 | 502 | #endif |
3280af22 | 503 | PL_pad_reset_pending = FALSE; |
79072805 LW |
504 | } |
505 | ||
a863c7d1 | 506 | #ifdef USE_THREADS |
54b9620d | 507 | /* find_threadsv is not reentrant */ |
a863c7d1 | 508 | PADOFFSET |
54b9620d | 509 | find_threadsv(char *name) |
a863c7d1 MB |
510 | { |
511 | dTHR; | |
512 | char *p; | |
513 | PADOFFSET key; | |
554b3eca | 514 | SV **svp; |
54b9620d | 515 | /* We currently only handle names of a single character */ |
533c011a | 516 | p = strchr(PL_threadsv_names, *name); |
a863c7d1 MB |
517 | if (!p) |
518 | return NOT_IN_PAD; | |
533c011a | 519 | key = p - PL_threadsv_names; |
54b9620d | 520 | svp = av_fetch(thr->threadsv, key, FALSE); |
554b3eca MB |
521 | if (!svp) { |
522 | SV *sv = NEWSV(0, 0); | |
54b9620d | 523 | av_store(thr->threadsv, key, sv); |
940cb80d | 524 | thr->threadsvp = AvARRAY(thr->threadsv); |
554b3eca MB |
525 | /* |
526 | * Some magic variables used to be automagically initialised | |
527 | * in gv_fetchpv. Those which are now per-thread magicals get | |
528 | * initialised here instead. | |
529 | */ | |
530 | switch (*name) { | |
54b9620d MB |
531 | case '_': |
532 | break; | |
554b3eca MB |
533 | case ';': |
534 | sv_setpv(sv, "\034"); | |
54b9620d | 535 | sv_magic(sv, 0, 0, name, 1); |
554b3eca | 536 | break; |
c277df42 IZ |
537 | case '&': |
538 | case '`': | |
539 | case '\'': | |
533c011a | 540 | PL_sawampersand = TRUE; |
c277df42 | 541 | SvREADONLY_on(sv); |
d8b5173a | 542 | /* FALL THROUGH */ |
067391ea GS |
543 | |
544 | /* XXX %! tied to Errno.pm needs to be added here. | |
545 | * See gv_fetchpv(). */ | |
546 | /* case '!': */ | |
547 | ||
54b9620d MB |
548 | default: |
549 | sv_magic(sv, 0, 0, name, 1); | |
554b3eca | 550 | } |
8b73bbec | 551 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), |
54b9620d | 552 | "find_threadsv: new SV %p for $%s%c\n", |
554b3eca MB |
553 | sv, (*name < 32) ? "^" : "", |
554 | (*name < 32) ? toCTRL(*name) : *name)); | |
a863c7d1 MB |
555 | } |
556 | return key; | |
557 | } | |
558 | #endif /* USE_THREADS */ | |
559 | ||
79072805 LW |
560 | /* Destructor */ |
561 | ||
562 | void | |
8ac85365 | 563 | op_free(OP *o) |
79072805 | 564 | { |
85e6fe83 | 565 | register OP *kid, *nextkid; |
79072805 | 566 | |
5dc0d613 | 567 | if (!o || o->op_seq == (U16)-1) |
79072805 LW |
568 | return; |
569 | ||
11343788 MB |
570 | if (o->op_flags & OPf_KIDS) { |
571 | for (kid = cUNOPo->op_first; kid; kid = nextkid) { | |
85e6fe83 | 572 | nextkid = kid->op_sibling; /* Get before next freeing kid */ |
79072805 | 573 | op_free(kid); |
85e6fe83 | 574 | } |
79072805 LW |
575 | } |
576 | ||
11343788 | 577 | switch (o->op_type) { |
8990e307 | 578 | case OP_NULL: |
11343788 | 579 | o->op_targ = 0; /* Was holding old type, if any. */ |
8990e307 | 580 | break; |
a0d0e21e | 581 | case OP_ENTEREVAL: |
11343788 | 582 | o->op_targ = 0; /* Was holding hints. */ |
a0d0e21e | 583 | break; |
554b3eca | 584 | #ifdef USE_THREADS |
2faa37cc | 585 | case OP_THREADSV: |
54b9620d | 586 | o->op_targ = 0; /* Was holding index into thr->threadsv AV. */ |
554b3eca MB |
587 | break; |
588 | #endif /* USE_THREADS */ | |
a6006777 | 589 | default: |
ac4c12e7 GS |
590 | if (!(o->op_flags & OPf_REF) |
591 | || (check[o->op_type] != FUNC_NAME_TO_PTR(ck_ftst))) | |
a6006777 | 592 | break; |
593 | /* FALL THROUGH */ | |
463ee0b2 | 594 | case OP_GVSV: |
79072805 | 595 | case OP_GV: |
a6006777 | 596 | case OP_AELEMFAST: |
11343788 | 597 | SvREFCNT_dec(cGVOPo->op_gv); |
8990e307 LW |
598 | break; |
599 | case OP_NEXTSTATE: | |
600 | case OP_DBSTATE: | |
5196be3e | 601 | Safefree(cCOPo->cop_label); |
11343788 | 602 | SvREFCNT_dec(cCOPo->cop_filegv); |
79072805 LW |
603 | break; |
604 | case OP_CONST: | |
11343788 | 605 | SvREFCNT_dec(cSVOPo->op_sv); |
79072805 | 606 | break; |
748a9306 LW |
607 | case OP_GOTO: |
608 | case OP_NEXT: | |
609 | case OP_LAST: | |
610 | case OP_REDO: | |
11343788 | 611 | if (o->op_flags & (OPf_SPECIAL|OPf_STACKED|OPf_KIDS)) |
748a9306 LW |
612 | break; |
613 | /* FALL THROUGH */ | |
a0d0e21e | 614 | case OP_TRANS: |
11343788 | 615 | Safefree(cPVOPo->op_pv); |
a0d0e21e LW |
616 | break; |
617 | case OP_SUBST: | |
11343788 | 618 | op_free(cPMOPo->op_pmreplroot); |
a0d0e21e | 619 | /* FALL THROUGH */ |
748a9306 | 620 | case OP_PUSHRE: |
a0d0e21e | 621 | case OP_MATCH: |
8782bef2 | 622 | case OP_QR: |
c277df42 | 623 | ReREFCNT_dec(cPMOPo->op_pmregexp); |
a0d0e21e | 624 | break; |
79072805 LW |
625 | } |
626 | ||
11343788 MB |
627 | if (o->op_targ > 0) |
628 | pad_free(o->op_targ); | |
8990e307 | 629 | |
11343788 | 630 | Safefree(o); |
79072805 LW |
631 | } |
632 | ||
76e3520e | 633 | STATIC void |
8ac85365 | 634 | null(OP *o) |
8990e307 | 635 | { |
54b9620d | 636 | if (o->op_type != OP_NULL && o->op_type != OP_THREADSV && o->op_targ > 0) |
11343788 MB |
637 | pad_free(o->op_targ); |
638 | o->op_targ = o->op_type; | |
639 | o->op_type = OP_NULL; | |
640 | o->op_ppaddr = ppaddr[OP_NULL]; | |
8990e307 LW |
641 | } |
642 | ||
79072805 LW |
643 | /* Contextualizers */ |
644 | ||
463ee0b2 | 645 | #define LINKLIST(o) ((o)->op_next ? (o)->op_next : linklist((OP*)o)) |
79072805 LW |
646 | |
647 | OP * | |
8ac85365 | 648 | linklist(OP *o) |
79072805 LW |
649 | { |
650 | register OP *kid; | |
651 | ||
11343788 MB |
652 | if (o->op_next) |
653 | return o->op_next; | |
79072805 LW |
654 | |
655 | /* establish postfix order */ | |
11343788 MB |
656 | if (cUNOPo->op_first) { |
657 | o->op_next = LINKLIST(cUNOPo->op_first); | |
658 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) { | |
79072805 LW |
659 | if (kid->op_sibling) |
660 | kid->op_next = LINKLIST(kid->op_sibling); | |
661 | else | |
11343788 | 662 | kid->op_next = o; |
79072805 LW |
663 | } |
664 | } | |
665 | else | |
11343788 | 666 | o->op_next = o; |
79072805 | 667 | |
11343788 | 668 | return o->op_next; |
79072805 LW |
669 | } |
670 | ||
671 | OP * | |
8ac85365 | 672 | scalarkids(OP *o) |
79072805 LW |
673 | { |
674 | OP *kid; | |
11343788 MB |
675 | if (o && o->op_flags & OPf_KIDS) { |
676 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
79072805 LW |
677 | scalar(kid); |
678 | } | |
11343788 | 679 | return o; |
79072805 LW |
680 | } |
681 | ||
76e3520e | 682 | STATIC OP * |
8ac85365 | 683 | scalarboolean(OP *o) |
8990e307 | 684 | { |
3280af22 | 685 | if (PL_dowarn && |
11343788 | 686 | o->op_type == OP_SASSIGN && cBINOPo->op_first->op_type == OP_CONST) { |
0f15f207 | 687 | dTHR; |
3280af22 | 688 | line_t oldline = PL_curcop->cop_line; |
a0d0e21e | 689 | |
3280af22 NIS |
690 | if (PL_copline != NOLINE) |
691 | PL_curcop->cop_line = PL_copline; | |
a0d0e21e | 692 | warn("Found = in conditional, should be =="); |
3280af22 | 693 | PL_curcop->cop_line = oldline; |
a0d0e21e | 694 | } |
11343788 | 695 | return scalar(o); |
8990e307 LW |
696 | } |
697 | ||
698 | OP * | |
8ac85365 | 699 | scalar(OP *o) |
79072805 LW |
700 | { |
701 | OP *kid; | |
702 | ||
a0d0e21e | 703 | /* assumes no premature commitment */ |
3280af22 | 704 | if (!o || (o->op_flags & OPf_WANT) || PL_error_count |
5dc0d613 | 705 | || o->op_type == OP_RETURN) |
11343788 | 706 | return o; |
79072805 | 707 | |
5dc0d613 | 708 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_SCALAR; |
79072805 | 709 | |
11343788 | 710 | switch (o->op_type) { |
79072805 | 711 | case OP_REPEAT: |
11343788 MB |
712 | if (o->op_private & OPpREPEAT_DOLIST) |
713 | null(((LISTOP*)cBINOPo->op_first)->op_first); | |
714 | scalar(cBINOPo->op_first); | |
8990e307 | 715 | break; |
79072805 LW |
716 | case OP_OR: |
717 | case OP_AND: | |
718 | case OP_COND_EXPR: | |
11343788 | 719 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
8990e307 | 720 | scalar(kid); |
79072805 | 721 | break; |
a0d0e21e | 722 | case OP_SPLIT: |
11343788 | 723 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e LW |
724 | if (!kPMOP->op_pmreplroot) |
725 | deprecate("implicit split to @_"); | |
726 | } | |
727 | /* FALL THROUGH */ | |
79072805 | 728 | case OP_MATCH: |
8782bef2 | 729 | case OP_QR: |
79072805 LW |
730 | case OP_SUBST: |
731 | case OP_NULL: | |
8990e307 | 732 | default: |
11343788 MB |
733 | if (o->op_flags & OPf_KIDS) { |
734 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) | |
8990e307 LW |
735 | scalar(kid); |
736 | } | |
79072805 LW |
737 | break; |
738 | case OP_LEAVE: | |
739 | case OP_LEAVETRY: | |
5dc0d613 | 740 | kid = cLISTOPo->op_first; |
54310121 | 741 | scalar(kid); |
742 | while (kid = kid->op_sibling) { | |
743 | if (kid->op_sibling) | |
744 | scalarvoid(kid); | |
745 | else | |
746 | scalar(kid); | |
747 | } | |
3280af22 | 748 | WITH_THR(PL_curcop = &PL_compiling); |
54310121 | 749 | break; |
748a9306 | 750 | case OP_SCOPE: |
79072805 | 751 | case OP_LINESEQ: |
8990e307 | 752 | case OP_LIST: |
11343788 | 753 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
754 | if (kid->op_sibling) |
755 | scalarvoid(kid); | |
756 | else | |
757 | scalar(kid); | |
758 | } | |
3280af22 | 759 | WITH_THR(PL_curcop = &PL_compiling); |
79072805 LW |
760 | break; |
761 | } | |
11343788 | 762 | return o; |
79072805 LW |
763 | } |
764 | ||
765 | OP * | |
8ac85365 | 766 | scalarvoid(OP *o) |
79072805 LW |
767 | { |
768 | OP *kid; | |
8990e307 LW |
769 | char* useless = 0; |
770 | SV* sv; | |
79072805 | 771 | |
54310121 | 772 | /* assumes no premature commitment */ |
3280af22 | 773 | if (!o || (o->op_flags & OPf_WANT) == OPf_WANT_LIST || PL_error_count |
5dc0d613 | 774 | || o->op_type == OP_RETURN) |
11343788 | 775 | return o; |
79072805 | 776 | |
5dc0d613 | 777 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_VOID; |
79072805 | 778 | |
11343788 | 779 | switch (o->op_type) { |
79072805 | 780 | default: |
11343788 | 781 | if (!(opargs[o->op_type] & OA_FOLDCONST)) |
8990e307 | 782 | break; |
36477c24 | 783 | /* FALL THROUGH */ |
784 | case OP_REPEAT: | |
11343788 | 785 | if (o->op_flags & OPf_STACKED) |
8990e307 | 786 | break; |
5d82c453 GA |
787 | goto func_ops; |
788 | case OP_SUBSTR: | |
789 | if (o->op_private == 4) | |
790 | break; | |
8990e307 LW |
791 | /* FALL THROUGH */ |
792 | case OP_GVSV: | |
793 | case OP_WANTARRAY: | |
794 | case OP_GV: | |
795 | case OP_PADSV: | |
796 | case OP_PADAV: | |
797 | case OP_PADHV: | |
798 | case OP_PADANY: | |
799 | case OP_AV2ARYLEN: | |
8990e307 | 800 | case OP_REF: |
a0d0e21e LW |
801 | case OP_REFGEN: |
802 | case OP_SREFGEN: | |
8990e307 LW |
803 | case OP_DEFINED: |
804 | case OP_HEX: | |
805 | case OP_OCT: | |
806 | case OP_LENGTH: | |
8990e307 LW |
807 | case OP_VEC: |
808 | case OP_INDEX: | |
809 | case OP_RINDEX: | |
810 | case OP_SPRINTF: | |
811 | case OP_AELEM: | |
812 | case OP_AELEMFAST: | |
813 | case OP_ASLICE: | |
8990e307 LW |
814 | case OP_HELEM: |
815 | case OP_HSLICE: | |
816 | case OP_UNPACK: | |
817 | case OP_PACK: | |
8990e307 LW |
818 | case OP_JOIN: |
819 | case OP_LSLICE: | |
820 | case OP_ANONLIST: | |
821 | case OP_ANONHASH: | |
822 | case OP_SORT: | |
823 | case OP_REVERSE: | |
824 | case OP_RANGE: | |
825 | case OP_FLIP: | |
826 | case OP_FLOP: | |
827 | case OP_CALLER: | |
828 | case OP_FILENO: | |
829 | case OP_EOF: | |
830 | case OP_TELL: | |
831 | case OP_GETSOCKNAME: | |
832 | case OP_GETPEERNAME: | |
833 | case OP_READLINK: | |
834 | case OP_TELLDIR: | |
835 | case OP_GETPPID: | |
836 | case OP_GETPGRP: | |
837 | case OP_GETPRIORITY: | |
838 | case OP_TIME: | |
839 | case OP_TMS: | |
840 | case OP_LOCALTIME: | |
841 | case OP_GMTIME: | |
842 | case OP_GHBYNAME: | |
843 | case OP_GHBYADDR: | |
844 | case OP_GHOSTENT: | |
845 | case OP_GNBYNAME: | |
846 | case OP_GNBYADDR: | |
847 | case OP_GNETENT: | |
848 | case OP_GPBYNAME: | |
849 | case OP_GPBYNUMBER: | |
850 | case OP_GPROTOENT: | |
851 | case OP_GSBYNAME: | |
852 | case OP_GSBYPORT: | |
853 | case OP_GSERVENT: | |
854 | case OP_GPWNAM: | |
855 | case OP_GPWUID: | |
856 | case OP_GGRNAM: | |
857 | case OP_GGRGID: | |
858 | case OP_GETLOGIN: | |
5d82c453 | 859 | func_ops: |
11343788 MB |
860 | if (!(o->op_private & OPpLVAL_INTRO)) |
861 | useless = op_desc[o->op_type]; | |
8990e307 LW |
862 | break; |
863 | ||
864 | case OP_RV2GV: | |
865 | case OP_RV2SV: | |
866 | case OP_RV2AV: | |
867 | case OP_RV2HV: | |
11343788 MB |
868 | if (!(o->op_private & OPpLVAL_INTRO) && |
869 | (!o->op_sibling || o->op_sibling->op_type != OP_READLINE)) | |
8990e307 LW |
870 | useless = "a variable"; |
871 | break; | |
79072805 | 872 | |
93a17b20 | 873 | case OP_NEXTSTATE: |
8990e307 | 874 | case OP_DBSTATE: |
3280af22 | 875 | WITH_THR(PL_curcop = ((COP*)o)); /* for warning below */ |
93a17b20 LW |
876 | break; |
877 | ||
79072805 | 878 | case OP_CONST: |
11343788 | 879 | sv = cSVOPo->op_sv; |
3280af22 | 880 | if (PL_dowarn) { |
8990e307 LW |
881 | useless = "a constant"; |
882 | if (SvNIOK(sv) && (SvNV(sv) == 0.0 || SvNV(sv) == 1.0)) | |
883 | useless = 0; | |
884 | else if (SvPOK(sv)) { | |
885 | if (strnEQ(SvPVX(sv), "di", 2) || | |
a0d0e21e | 886 | strnEQ(SvPVX(sv), "ds", 2) || |
8990e307 LW |
887 | strnEQ(SvPVX(sv), "ig", 2)) |
888 | useless = 0; | |
889 | } | |
890 | } | |
11343788 | 891 | null(o); /* don't execute a constant */ |
8990e307 | 892 | SvREFCNT_dec(sv); /* don't even remember it */ |
79072805 LW |
893 | break; |
894 | ||
895 | case OP_POSTINC: | |
11343788 MB |
896 | o->op_type = OP_PREINC; /* pre-increment is faster */ |
897 | o->op_ppaddr = ppaddr[OP_PREINC]; | |
79072805 LW |
898 | break; |
899 | ||
900 | case OP_POSTDEC: | |
11343788 MB |
901 | o->op_type = OP_PREDEC; /* pre-decrement is faster */ |
902 | o->op_ppaddr = ppaddr[OP_PREDEC]; | |
79072805 LW |
903 | break; |
904 | ||
79072805 LW |
905 | case OP_OR: |
906 | case OP_AND: | |
907 | case OP_COND_EXPR: | |
11343788 | 908 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
909 | scalarvoid(kid); |
910 | break; | |
5aabfad6 | 911 | |
a0d0e21e | 912 | case OP_NULL: |
11343788 | 913 | if (o->op_targ == OP_NEXTSTATE || o->op_targ == OP_DBSTATE) |
3280af22 | 914 | WITH_THR(PL_curcop = ((COP*)o)); /* for warning below */ |
11343788 | 915 | if (o->op_flags & OPf_STACKED) |
a0d0e21e | 916 | break; |
5aabfad6 | 917 | /* FALL THROUGH */ |
79072805 LW |
918 | case OP_ENTERTRY: |
919 | case OP_ENTER: | |
920 | case OP_SCALAR: | |
11343788 | 921 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 922 | break; |
54310121 | 923 | /* FALL THROUGH */ |
463ee0b2 | 924 | case OP_SCOPE: |
79072805 LW |
925 | case OP_LEAVE: |
926 | case OP_LEAVETRY: | |
a0d0e21e | 927 | case OP_LEAVELOOP: |
79072805 | 928 | case OP_LINESEQ: |
79072805 | 929 | case OP_LIST: |
11343788 | 930 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
931 | scalarvoid(kid); |
932 | break; | |
c90c0ff4 | 933 | case OP_ENTEREVAL: |
5196be3e | 934 | scalarkids(o); |
c90c0ff4 | 935 | break; |
5aabfad6 | 936 | case OP_REQUIRE: |
c90c0ff4 | 937 | /* all requires must return a boolean value */ |
5196be3e MB |
938 | o->op_flags &= ~OPf_WANT; |
939 | return scalar(o); | |
a0d0e21e | 940 | case OP_SPLIT: |
11343788 | 941 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e LW |
942 | if (!kPMOP->op_pmreplroot) |
943 | deprecate("implicit split to @_"); | |
944 | } | |
945 | break; | |
79072805 | 946 | } |
3280af22 | 947 | if (useless && PL_dowarn) |
8990e307 | 948 | warn("Useless use of %s in void context", useless); |
11343788 | 949 | return o; |
79072805 LW |
950 | } |
951 | ||
952 | OP * | |
8ac85365 | 953 | listkids(OP *o) |
79072805 LW |
954 | { |
955 | OP *kid; | |
11343788 MB |
956 | if (o && o->op_flags & OPf_KIDS) { |
957 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
79072805 LW |
958 | list(kid); |
959 | } | |
11343788 | 960 | return o; |
79072805 LW |
961 | } |
962 | ||
963 | OP * | |
8ac85365 | 964 | list(OP *o) |
79072805 LW |
965 | { |
966 | OP *kid; | |
967 | ||
a0d0e21e | 968 | /* assumes no premature commitment */ |
3280af22 | 969 | if (!o || (o->op_flags & OPf_WANT) || PL_error_count |
5dc0d613 | 970 | || o->op_type == OP_RETURN) |
11343788 | 971 | return o; |
79072805 | 972 | |
5dc0d613 | 973 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_LIST; |
79072805 | 974 | |
11343788 | 975 | switch (o->op_type) { |
79072805 LW |
976 | case OP_FLOP: |
977 | case OP_REPEAT: | |
11343788 | 978 | list(cBINOPo->op_first); |
79072805 LW |
979 | break; |
980 | case OP_OR: | |
981 | case OP_AND: | |
982 | case OP_COND_EXPR: | |
11343788 | 983 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
984 | list(kid); |
985 | break; | |
986 | default: | |
987 | case OP_MATCH: | |
8782bef2 | 988 | case OP_QR: |
79072805 LW |
989 | case OP_SUBST: |
990 | case OP_NULL: | |
11343788 | 991 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 992 | break; |
11343788 MB |
993 | if (!o->op_next && cUNOPo->op_first->op_type == OP_FLOP) { |
994 | list(cBINOPo->op_first); | |
995 | return gen_constant_list(o); | |
79072805 LW |
996 | } |
997 | case OP_LIST: | |
11343788 | 998 | listkids(o); |
79072805 LW |
999 | break; |
1000 | case OP_LEAVE: | |
1001 | case OP_LEAVETRY: | |
5dc0d613 | 1002 | kid = cLISTOPo->op_first; |
54310121 | 1003 | list(kid); |
1004 | while (kid = kid->op_sibling) { | |
1005 | if (kid->op_sibling) | |
1006 | scalarvoid(kid); | |
1007 | else | |
1008 | list(kid); | |
1009 | } | |
3280af22 | 1010 | WITH_THR(PL_curcop = &PL_compiling); |
54310121 | 1011 | break; |
748a9306 | 1012 | case OP_SCOPE: |
79072805 | 1013 | case OP_LINESEQ: |
11343788 | 1014 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
1015 | if (kid->op_sibling) |
1016 | scalarvoid(kid); | |
1017 | else | |
1018 | list(kid); | |
1019 | } | |
3280af22 | 1020 | WITH_THR(PL_curcop = &PL_compiling); |
79072805 | 1021 | break; |
c90c0ff4 | 1022 | case OP_REQUIRE: |
1023 | /* all requires must return a boolean value */ | |
5196be3e MB |
1024 | o->op_flags &= ~OPf_WANT; |
1025 | return scalar(o); | |
79072805 | 1026 | } |
11343788 | 1027 | return o; |
79072805 LW |
1028 | } |
1029 | ||
1030 | OP * | |
8ac85365 | 1031 | scalarseq(OP *o) |
79072805 LW |
1032 | { |
1033 | OP *kid; | |
1034 | ||
11343788 MB |
1035 | if (o) { |
1036 | if (o->op_type == OP_LINESEQ || | |
1037 | o->op_type == OP_SCOPE || | |
1038 | o->op_type == OP_LEAVE || | |
1039 | o->op_type == OP_LEAVETRY) | |
463ee0b2 | 1040 | { |
0f15f207 | 1041 | dTHR; |
11343788 | 1042 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
ed6116ce | 1043 | if (kid->op_sibling) { |
463ee0b2 | 1044 | scalarvoid(kid); |
ed6116ce | 1045 | } |
463ee0b2 | 1046 | } |
3280af22 | 1047 | PL_curcop = &PL_compiling; |
79072805 | 1048 | } |
11343788 | 1049 | o->op_flags &= ~OPf_PARENS; |
3280af22 | 1050 | if (PL_hints & HINT_BLOCK_SCOPE) |
11343788 | 1051 | o->op_flags |= OPf_PARENS; |
79072805 | 1052 | } |
8990e307 | 1053 | else |
11343788 MB |
1054 | o = newOP(OP_STUB, 0); |
1055 | return o; | |
79072805 LW |
1056 | } |
1057 | ||
76e3520e | 1058 | STATIC OP * |
8ac85365 | 1059 | modkids(OP *o, I32 type) |
79072805 LW |
1060 | { |
1061 | OP *kid; | |
11343788 MB |
1062 | if (o && o->op_flags & OPf_KIDS) { |
1063 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
463ee0b2 | 1064 | mod(kid, type); |
79072805 | 1065 | } |
11343788 | 1066 | return o; |
79072805 LW |
1067 | } |
1068 | ||
79072805 | 1069 | OP * |
8ac85365 | 1070 | mod(OP *o, I32 type) |
79072805 | 1071 | { |
11343788 | 1072 | dTHR; |
79072805 LW |
1073 | OP *kid; |
1074 | SV *sv; | |
1075 | ||
3280af22 | 1076 | if (!o || PL_error_count) |
11343788 | 1077 | return o; |
79072805 | 1078 | |
11343788 | 1079 | switch (o->op_type) { |
68dc0745 | 1080 | case OP_UNDEF: |
3280af22 | 1081 | PL_modcount++; |
5dc0d613 | 1082 | return o; |
a0d0e21e | 1083 | case OP_CONST: |
11343788 | 1084 | if (!(o->op_private & (OPpCONST_ARYBASE))) |
a0d0e21e | 1085 | goto nomod; |
3280af22 NIS |
1086 | if (PL_eval_start && PL_eval_start->op_type == OP_CONST) { |
1087 | PL_compiling.cop_arybase = (I32)SvIV(((SVOP*)PL_eval_start)->op_sv); | |
1088 | PL_eval_start = 0; | |
a0d0e21e LW |
1089 | } |
1090 | else if (!type) { | |
3280af22 NIS |
1091 | SAVEI32(PL_compiling.cop_arybase); |
1092 | PL_compiling.cop_arybase = 0; | |
a0d0e21e LW |
1093 | } |
1094 | else if (type == OP_REFGEN) | |
1095 | goto nomod; | |
1096 | else | |
1097 | croak("That use of $[ is unsupported"); | |
1098 | break; | |
5f05dabc | 1099 | case OP_STUB: |
5196be3e | 1100 | if (o->op_flags & OPf_PARENS) |
5f05dabc | 1101 | break; |
1102 | goto nomod; | |
a0d0e21e LW |
1103 | case OP_ENTERSUB: |
1104 | if ((type == OP_UNDEF || type == OP_REFGEN) && | |
11343788 MB |
1105 | !(o->op_flags & OPf_STACKED)) { |
1106 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
1107 | o->op_ppaddr = ppaddr[OP_RV2CV]; | |
1108 | assert(cUNOPo->op_first->op_type == OP_NULL); | |
1109 | null(((LISTOP*)cUNOPo->op_first)->op_first);/* disable pushmark */ | |
79072805 LW |
1110 | break; |
1111 | } | |
1112 | /* FALL THROUGH */ | |
1113 | default: | |
a0d0e21e LW |
1114 | nomod: |
1115 | /* grep, foreach, subcalls, refgen */ | |
1116 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) | |
1117 | break; | |
46fc3d4c | 1118 | yyerror(form("Can't modify %s in %s", |
5dc0d613 | 1119 | op_desc[o->op_type], |
46fc3d4c | 1120 | type ? op_desc[type] : "local")); |
11343788 | 1121 | return o; |
79072805 | 1122 | |
a0d0e21e LW |
1123 | case OP_PREINC: |
1124 | case OP_PREDEC: | |
1125 | case OP_POW: | |
1126 | case OP_MULTIPLY: | |
1127 | case OP_DIVIDE: | |
1128 | case OP_MODULO: | |
1129 | case OP_REPEAT: | |
1130 | case OP_ADD: | |
1131 | case OP_SUBTRACT: | |
1132 | case OP_CONCAT: | |
1133 | case OP_LEFT_SHIFT: | |
1134 | case OP_RIGHT_SHIFT: | |
1135 | case OP_BIT_AND: | |
1136 | case OP_BIT_XOR: | |
1137 | case OP_BIT_OR: | |
1138 | case OP_I_MULTIPLY: | |
1139 | case OP_I_DIVIDE: | |
1140 | case OP_I_MODULO: | |
1141 | case OP_I_ADD: | |
1142 | case OP_I_SUBTRACT: | |
11343788 | 1143 | if (!(o->op_flags & OPf_STACKED)) |
a0d0e21e | 1144 | goto nomod; |
3280af22 | 1145 | PL_modcount++; |
a0d0e21e LW |
1146 | break; |
1147 | ||
79072805 | 1148 | case OP_COND_EXPR: |
11343788 | 1149 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 | 1150 | mod(kid, type); |
79072805 LW |
1151 | break; |
1152 | ||
1153 | case OP_RV2AV: | |
1154 | case OP_RV2HV: | |
93af7a87 | 1155 | if (!type && cUNOPo->op_first->op_type != OP_GV) |
706a304b | 1156 | croak("Can't localize through a reference"); |
11343788 | 1157 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) { |
3280af22 | 1158 | PL_modcount = 10000; |
11343788 | 1159 | return o; /* Treat \(@foo) like ordinary list. */ |
748a9306 LW |
1160 | } |
1161 | /* FALL THROUGH */ | |
79072805 | 1162 | case OP_RV2GV: |
5dc0d613 | 1163 | if (scalar_mod_type(o, type)) |
3fe9a6f1 | 1164 | goto nomod; |
11343788 | 1165 | ref(cUNOPo->op_first, o->op_type); |
79072805 LW |
1166 | /* FALL THROUGH */ |
1167 | case OP_AASSIGN: | |
1168 | case OP_ASLICE: | |
1169 | case OP_HSLICE: | |
93a17b20 LW |
1170 | case OP_NEXTSTATE: |
1171 | case OP_DBSTATE: | |
a0d0e21e LW |
1172 | case OP_REFGEN: |
1173 | case OP_CHOMP: | |
3280af22 | 1174 | PL_modcount = 10000; |
79072805 | 1175 | break; |
463ee0b2 | 1176 | case OP_RV2SV: |
11343788 | 1177 | if (!type && cUNOPo->op_first->op_type != OP_GV) |
706a304b | 1178 | croak("Can't localize through a reference"); |
aeea060c | 1179 | ref(cUNOPo->op_first, o->op_type); |
463ee0b2 | 1180 | /* FALL THROUGH */ |
79072805 | 1181 | case OP_GV: |
463ee0b2 | 1182 | case OP_AV2ARYLEN: |
3280af22 | 1183 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 1184 | case OP_SASSIGN: |
8990e307 | 1185 | case OP_AELEMFAST: |
3280af22 | 1186 | PL_modcount++; |
8990e307 LW |
1187 | break; |
1188 | ||
748a9306 LW |
1189 | case OP_PADAV: |
1190 | case OP_PADHV: | |
3280af22 | 1191 | PL_modcount = 10000; |
5196be3e MB |
1192 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) |
1193 | return o; /* Treat \(@foo) like ordinary list. */ | |
1194 | if (scalar_mod_type(o, type)) | |
3fe9a6f1 | 1195 | goto nomod; |
748a9306 LW |
1196 | /* FALL THROUGH */ |
1197 | case OP_PADSV: | |
3280af22 | 1198 | PL_modcount++; |
748a9306 LW |
1199 | if (!type) |
1200 | croak("Can't localize lexical variable %s", | |
3280af22 | 1201 | SvPV(*av_fetch(PL_comppad_name, o->op_targ, 4), PL_na)); |
463ee0b2 LW |
1202 | break; |
1203 | ||
554b3eca | 1204 | #ifdef USE_THREADS |
2faa37cc | 1205 | case OP_THREADSV: |
533c011a | 1206 | PL_modcount++; /* XXX ??? */ |
554b3eca MB |
1207 | break; |
1208 | #endif /* USE_THREADS */ | |
1209 | ||
748a9306 LW |
1210 | case OP_PUSHMARK: |
1211 | break; | |
a0d0e21e | 1212 | |
69969c6f SB |
1213 | case OP_KEYS: |
1214 | if (type != OP_SASSIGN) | |
1215 | goto nomod; | |
5d82c453 GA |
1216 | goto lvalue_func; |
1217 | case OP_SUBSTR: | |
1218 | if (o->op_private == 4) /* don't allow 4 arg substr as lvalue */ | |
1219 | goto nomod; | |
5f05dabc | 1220 | /* FALL THROUGH */ |
a0d0e21e | 1221 | case OP_POS: |
463ee0b2 | 1222 | case OP_VEC: |
5d82c453 | 1223 | lvalue_func: |
11343788 MB |
1224 | pad_free(o->op_targ); |
1225 | o->op_targ = pad_alloc(o->op_type, SVs_PADMY); | |
5dc0d613 | 1226 | assert(SvTYPE(PAD_SV(o->op_targ)) == SVt_NULL); |
11343788 MB |
1227 | if (o->op_flags & OPf_KIDS) |
1228 | mod(cBINOPo->op_first->op_sibling, type); | |
463ee0b2 | 1229 | break; |
a0d0e21e | 1230 | |
463ee0b2 LW |
1231 | case OP_AELEM: |
1232 | case OP_HELEM: | |
11343788 | 1233 | ref(cBINOPo->op_first, o->op_type); |
68dc0745 | 1234 | if (type == OP_ENTERSUB && |
5dc0d613 MB |
1235 | !(o->op_private & (OPpLVAL_INTRO | OPpDEREF))) |
1236 | o->op_private |= OPpLVAL_DEFER; | |
3280af22 | 1237 | PL_modcount++; |
463ee0b2 LW |
1238 | break; |
1239 | ||
1240 | case OP_SCOPE: | |
1241 | case OP_LEAVE: | |
1242 | case OP_ENTER: | |
11343788 MB |
1243 | if (o->op_flags & OPf_KIDS) |
1244 | mod(cLISTOPo->op_last, type); | |
a0d0e21e LW |
1245 | break; |
1246 | ||
1247 | case OP_NULL: | |
11343788 | 1248 | if (!(o->op_flags & OPf_KIDS)) |
463ee0b2 | 1249 | break; |
11343788 MB |
1250 | if (o->op_targ != OP_LIST) { |
1251 | mod(cBINOPo->op_first, type); | |
a0d0e21e LW |
1252 | break; |
1253 | } | |
1254 | /* FALL THROUGH */ | |
463ee0b2 | 1255 | case OP_LIST: |
11343788 | 1256 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1257 | mod(kid, type); |
1258 | break; | |
1259 | } | |
11343788 | 1260 | o->op_flags |= OPf_MOD; |
a0d0e21e LW |
1261 | |
1262 | if (type == OP_AASSIGN || type == OP_SASSIGN) | |
11343788 | 1263 | o->op_flags |= OPf_SPECIAL|OPf_REF; |
a0d0e21e | 1264 | else if (!type) { |
11343788 MB |
1265 | o->op_private |= OPpLVAL_INTRO; |
1266 | o->op_flags &= ~OPf_SPECIAL; | |
3280af22 | 1267 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 1268 | } |
a0d0e21e | 1269 | else if (type != OP_GREPSTART && type != OP_ENTERSUB) |
11343788 MB |
1270 | o->op_flags |= OPf_REF; |
1271 | return o; | |
463ee0b2 LW |
1272 | } |
1273 | ||
3fe9a6f1 | 1274 | static bool |
8ac85365 | 1275 | scalar_mod_type(OP *o, I32 type) |
3fe9a6f1 | 1276 | { |
1277 | switch (type) { | |
1278 | case OP_SASSIGN: | |
5196be3e | 1279 | if (o->op_type == OP_RV2GV) |
3fe9a6f1 | 1280 | return FALSE; |
1281 | /* FALL THROUGH */ | |
1282 | case OP_PREINC: | |
1283 | case OP_PREDEC: | |
1284 | case OP_POSTINC: | |
1285 | case OP_POSTDEC: | |
1286 | case OP_I_PREINC: | |
1287 | case OP_I_PREDEC: | |
1288 | case OP_I_POSTINC: | |
1289 | case OP_I_POSTDEC: | |
1290 | case OP_POW: | |
1291 | case OP_MULTIPLY: | |
1292 | case OP_DIVIDE: | |
1293 | case OP_MODULO: | |
1294 | case OP_REPEAT: | |
1295 | case OP_ADD: | |
1296 | case OP_SUBTRACT: | |
1297 | case OP_I_MULTIPLY: | |
1298 | case OP_I_DIVIDE: | |
1299 | case OP_I_MODULO: | |
1300 | case OP_I_ADD: | |
1301 | case OP_I_SUBTRACT: | |
1302 | case OP_LEFT_SHIFT: | |
1303 | case OP_RIGHT_SHIFT: | |
1304 | case OP_BIT_AND: | |
1305 | case OP_BIT_XOR: | |
1306 | case OP_BIT_OR: | |
1307 | case OP_CONCAT: | |
1308 | case OP_SUBST: | |
1309 | case OP_TRANS: | |
49e9fbe6 GS |
1310 | case OP_READ: |
1311 | case OP_SYSREAD: | |
1312 | case OP_RECV: | |
3fe9a6f1 | 1313 | case OP_ANDASSIGN: /* may work later */ |
1314 | case OP_ORASSIGN: /* may work later */ | |
1315 | return TRUE; | |
1316 | default: | |
1317 | return FALSE; | |
1318 | } | |
1319 | } | |
1320 | ||
463ee0b2 | 1321 | OP * |
8ac85365 | 1322 | refkids(OP *o, I32 type) |
463ee0b2 LW |
1323 | { |
1324 | OP *kid; | |
11343788 MB |
1325 | if (o && o->op_flags & OPf_KIDS) { |
1326 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
463ee0b2 LW |
1327 | ref(kid, type); |
1328 | } | |
11343788 | 1329 | return o; |
463ee0b2 LW |
1330 | } |
1331 | ||
1332 | OP * | |
8ac85365 | 1333 | ref(OP *o, I32 type) |
463ee0b2 LW |
1334 | { |
1335 | OP *kid; | |
463ee0b2 | 1336 | |
3280af22 | 1337 | if (!o || PL_error_count) |
11343788 | 1338 | return o; |
463ee0b2 | 1339 | |
11343788 | 1340 | switch (o->op_type) { |
a0d0e21e | 1341 | case OP_ENTERSUB: |
e55aaa0e | 1342 | if ((type == OP_DEFINED || type == OP_LOCK) && |
11343788 MB |
1343 | !(o->op_flags & OPf_STACKED)) { |
1344 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
1345 | o->op_ppaddr = ppaddr[OP_RV2CV]; | |
1346 | assert(cUNOPo->op_first->op_type == OP_NULL); | |
1347 | null(((LISTOP*)cUNOPo->op_first)->op_first); /* disable pushmark */ | |
1348 | o->op_flags |= OPf_SPECIAL; | |
8990e307 LW |
1349 | } |
1350 | break; | |
aeea060c | 1351 | |
463ee0b2 | 1352 | case OP_COND_EXPR: |
11343788 | 1353 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1354 | ref(kid, type); |
1355 | break; | |
8990e307 | 1356 | case OP_RV2SV: |
11343788 | 1357 | ref(cUNOPo->op_first, o->op_type); |
4633a7c4 LW |
1358 | /* FALL THROUGH */ |
1359 | case OP_PADSV: | |
5f05dabc | 1360 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1361 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1362 | : type == OP_RV2HV ? OPpDEREF_HV | |
1363 | : OPpDEREF_SV); | |
11343788 | 1364 | o->op_flags |= OPf_MOD; |
a0d0e21e | 1365 | } |
8990e307 LW |
1366 | break; |
1367 | ||
2faa37cc | 1368 | case OP_THREADSV: |
a863c7d1 MB |
1369 | o->op_flags |= OPf_MOD; /* XXX ??? */ |
1370 | break; | |
1371 | ||
463ee0b2 LW |
1372 | case OP_RV2AV: |
1373 | case OP_RV2HV: | |
aeea060c | 1374 | o->op_flags |= OPf_REF; |
8990e307 | 1375 | /* FALL THROUGH */ |
463ee0b2 | 1376 | case OP_RV2GV: |
11343788 | 1377 | ref(cUNOPo->op_first, o->op_type); |
463ee0b2 | 1378 | break; |
8990e307 | 1379 | |
463ee0b2 LW |
1380 | case OP_PADAV: |
1381 | case OP_PADHV: | |
aeea060c | 1382 | o->op_flags |= OPf_REF; |
79072805 | 1383 | break; |
aeea060c | 1384 | |
8990e307 | 1385 | case OP_SCALAR: |
79072805 | 1386 | case OP_NULL: |
11343788 | 1387 | if (!(o->op_flags & OPf_KIDS)) |
463ee0b2 | 1388 | break; |
11343788 | 1389 | ref(cBINOPo->op_first, type); |
79072805 LW |
1390 | break; |
1391 | case OP_AELEM: | |
1392 | case OP_HELEM: | |
11343788 | 1393 | ref(cBINOPo->op_first, o->op_type); |
5f05dabc | 1394 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1395 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1396 | : type == OP_RV2HV ? OPpDEREF_HV | |
1397 | : OPpDEREF_SV); | |
11343788 | 1398 | o->op_flags |= OPf_MOD; |
8990e307 | 1399 | } |
79072805 LW |
1400 | break; |
1401 | ||
463ee0b2 | 1402 | case OP_SCOPE: |
79072805 LW |
1403 | case OP_LEAVE: |
1404 | case OP_ENTER: | |
8990e307 | 1405 | case OP_LIST: |
11343788 | 1406 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1407 | break; |
11343788 | 1408 | ref(cLISTOPo->op_last, type); |
79072805 | 1409 | break; |
a0d0e21e LW |
1410 | default: |
1411 | break; | |
79072805 | 1412 | } |
11343788 | 1413 | return scalar(o); |
8990e307 | 1414 | |
79072805 LW |
1415 | } |
1416 | ||
1417 | OP * | |
8ac85365 | 1418 | my(OP *o) |
93a17b20 LW |
1419 | { |
1420 | OP *kid; | |
93a17b20 LW |
1421 | I32 type; |
1422 | ||
3280af22 | 1423 | if (!o || PL_error_count) |
11343788 | 1424 | return o; |
93a17b20 | 1425 | |
11343788 | 1426 | type = o->op_type; |
93a17b20 | 1427 | if (type == OP_LIST) { |
11343788 | 1428 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
93a17b20 | 1429 | my(kid); |
dab48698 | 1430 | } else if (type == OP_UNDEF) { |
7766148a | 1431 | return o; |
dab48698 | 1432 | } else if (type != OP_PADSV && |
93a17b20 LW |
1433 | type != OP_PADAV && |
1434 | type != OP_PADHV && | |
1435 | type != OP_PUSHMARK) | |
1436 | { | |
5dc0d613 | 1437 | yyerror(form("Can't declare %s in my", op_desc[o->op_type])); |
11343788 | 1438 | return o; |
93a17b20 | 1439 | } |
11343788 MB |
1440 | o->op_flags |= OPf_MOD; |
1441 | o->op_private |= OPpLVAL_INTRO; | |
1442 | return o; | |
93a17b20 LW |
1443 | } |
1444 | ||
1445 | OP * | |
8ac85365 | 1446 | sawparens(OP *o) |
79072805 LW |
1447 | { |
1448 | if (o) | |
1449 | o->op_flags |= OPf_PARENS; | |
1450 | return o; | |
1451 | } | |
1452 | ||
1453 | OP * | |
8ac85365 | 1454 | bind_match(I32 type, OP *left, OP *right) |
79072805 | 1455 | { |
11343788 | 1456 | OP *o; |
79072805 | 1457 | |
3280af22 | 1458 | if (PL_dowarn && |
2ae324a7 | 1459 | (left->op_type == OP_RV2AV || |
1460 | left->op_type == OP_RV2HV || | |
1461 | left->op_type == OP_PADAV || | |
1462 | left->op_type == OP_PADHV)) { | |
1463 | char *desc = op_desc[(right->op_type == OP_SUBST || | |
1464 | right->op_type == OP_TRANS) | |
1465 | ? right->op_type : OP_MATCH]; | |
1466 | char *sample = ((left->op_type == OP_RV2AV || | |
1467 | left->op_type == OP_PADAV) | |
1468 | ? "@array" : "%hash"); | |
1469 | warn("Applying %s to %s will act on scalar(%s)", desc, sample, sample); | |
1470 | } | |
1471 | ||
79072805 LW |
1472 | if (right->op_type == OP_MATCH || |
1473 | right->op_type == OP_SUBST || | |
1474 | right->op_type == OP_TRANS) { | |
1475 | right->op_flags |= OPf_STACKED; | |
1476 | if (right->op_type != OP_MATCH) | |
463ee0b2 | 1477 | left = mod(left, right->op_type); |
79072805 | 1478 | if (right->op_type == OP_TRANS) |
11343788 | 1479 | o = newBINOP(OP_NULL, OPf_STACKED, scalar(left), right); |
79072805 | 1480 | else |
11343788 | 1481 | o = prepend_elem(right->op_type, scalar(left), right); |
79072805 | 1482 | if (type == OP_NOT) |
11343788 MB |
1483 | return newUNOP(OP_NOT, 0, scalar(o)); |
1484 | return o; | |
79072805 LW |
1485 | } |
1486 | else | |
1487 | return bind_match(type, left, | |
1488 | pmruntime(newPMOP(OP_MATCH, 0), right, Nullop)); | |
1489 | } | |
1490 | ||
1491 | OP * | |
8ac85365 | 1492 | invert(OP *o) |
79072805 | 1493 | { |
11343788 MB |
1494 | if (!o) |
1495 | return o; | |
79072805 | 1496 | /* XXX need to optimize away NOT NOT here? Or do we let optimizer do it? */ |
11343788 | 1497 | return newUNOP(OP_NOT, OPf_SPECIAL, scalar(o)); |
79072805 LW |
1498 | } |
1499 | ||
1500 | OP * | |
8ac85365 | 1501 | scope(OP *o) |
79072805 LW |
1502 | { |
1503 | if (o) { | |
3280af22 | 1504 | if (o->op_flags & OPf_PARENS || PERLDB_NOOPT || PL_tainting) { |
463ee0b2 LW |
1505 | o = prepend_elem(OP_LINESEQ, newOP(OP_ENTER, 0), o); |
1506 | o->op_type = OP_LEAVE; | |
1507 | o->op_ppaddr = ppaddr[OP_LEAVE]; | |
1508 | } | |
1509 | else { | |
1510 | if (o->op_type == OP_LINESEQ) { | |
1511 | OP *kid; | |
1512 | o->op_type = OP_SCOPE; | |
1513 | o->op_ppaddr = ppaddr[OP_SCOPE]; | |
1514 | kid = ((LISTOP*)o)->op_first; | |
748a9306 LW |
1515 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE){ |
1516 | SvREFCNT_dec(((COP*)kid)->cop_filegv); | |
8990e307 | 1517 | null(kid); |
748a9306 | 1518 | } |
463ee0b2 LW |
1519 | } |
1520 | else | |
748a9306 | 1521 | o = newLISTOP(OP_SCOPE, 0, o, Nullop); |
463ee0b2 | 1522 | } |
79072805 LW |
1523 | } |
1524 | return o; | |
1525 | } | |
1526 | ||
b3ac6de7 IZ |
1527 | void |
1528 | save_hints(void) | |
1529 | { | |
3280af22 NIS |
1530 | SAVEI32(PL_hints); |
1531 | SAVESPTR(GvHV(PL_hintgv)); | |
1532 | GvHV(PL_hintgv) = newHVhv(GvHV(PL_hintgv)); | |
1533 | SAVEFREESV(GvHV(PL_hintgv)); | |
b3ac6de7 IZ |
1534 | } |
1535 | ||
a0d0e21e | 1536 | int |
8ac85365 | 1537 | block_start(int full) |
79072805 | 1538 | { |
11343788 | 1539 | dTHR; |
3280af22 | 1540 | int retval = PL_savestack_ix; |
b3ac6de7 | 1541 | |
3280af22 | 1542 | SAVEI32(PL_comppad_name_floor); |
55497cff | 1543 | if (full) { |
3280af22 NIS |
1544 | if ((PL_comppad_name_fill = AvFILLp(PL_comppad_name)) > 0) |
1545 | PL_comppad_name_floor = PL_comppad_name_fill; | |
55497cff | 1546 | else |
3280af22 NIS |
1547 | PL_comppad_name_floor = 0; |
1548 | } | |
1549 | SAVEI32(PL_min_intro_pending); | |
1550 | SAVEI32(PL_max_intro_pending); | |
1551 | PL_min_intro_pending = 0; | |
1552 | SAVEI32(PL_comppad_name_fill); | |
1553 | SAVEI32(PL_padix_floor); | |
1554 | PL_padix_floor = PL_padix; | |
1555 | PL_pad_reset_pending = FALSE; | |
b3ac6de7 | 1556 | SAVEHINTS(); |
3280af22 | 1557 | PL_hints &= ~HINT_BLOCK_SCOPE; |
a0d0e21e LW |
1558 | return retval; |
1559 | } | |
1560 | ||
1561 | OP* | |
8ac85365 | 1562 | block_end(I32 floor, OP *seq) |
a0d0e21e | 1563 | { |
11343788 | 1564 | dTHR; |
3280af22 | 1565 | int needblockscope = PL_hints & HINT_BLOCK_SCOPE; |
a0d0e21e | 1566 | OP* retval = scalarseq(seq); |
a0d0e21e | 1567 | LEAVE_SCOPE(floor); |
3280af22 | 1568 | PL_pad_reset_pending = FALSE; |
a0d0e21e | 1569 | if (needblockscope) |
3280af22 NIS |
1570 | PL_hints |= HINT_BLOCK_SCOPE; /* propagate out */ |
1571 | pad_leavemy(PL_comppad_name_fill); | |
1572 | PL_cop_seqmax++; | |
a0d0e21e LW |
1573 | return retval; |
1574 | } | |
1575 | ||
76e3520e | 1576 | STATIC OP * |
54b9620d MB |
1577 | newDEFSVOP(void) |
1578 | { | |
1579 | #ifdef USE_THREADS | |
1580 | OP *o = newOP(OP_THREADSV, 0); | |
1581 | o->op_targ = find_threadsv("_"); | |
1582 | return o; | |
1583 | #else | |
3280af22 | 1584 | return newSVREF(newGVOP(OP_GV, 0, PL_defgv)); |
54b9620d MB |
1585 | #endif /* USE_THREADS */ |
1586 | } | |
1587 | ||
a0d0e21e | 1588 | void |
8ac85365 | 1589 | newPROG(OP *o) |
a0d0e21e | 1590 | { |
11343788 | 1591 | dTHR; |
3280af22 NIS |
1592 | if (PL_in_eval) { |
1593 | PL_eval_root = newUNOP(OP_LEAVEEVAL, ((PL_in_eval & 4) ? OPf_SPECIAL : 0), o); | |
1594 | PL_eval_start = linklist(PL_eval_root); | |
1595 | PL_eval_root->op_next = 0; | |
1596 | peep(PL_eval_start); | |
a0d0e21e LW |
1597 | } |
1598 | else { | |
5dc0d613 | 1599 | if (!o) |
a0d0e21e | 1600 | return; |
3280af22 NIS |
1601 | PL_main_root = scope(sawparens(scalarvoid(o))); |
1602 | PL_curcop = &PL_compiling; | |
1603 | PL_main_start = LINKLIST(PL_main_root); | |
1604 | PL_main_root->op_next = 0; | |
1605 | peep(PL_main_start); | |
1606 | PL_compcv = 0; | |
3841441e | 1607 | |
4fdae800 | 1608 | /* Register with debugger */ |
84902520 | 1609 | if (PERLDB_INTER) { |
3841441e | 1610 | CV *cv = perl_get_cv("DB::postponed", FALSE); |
3841441e CS |
1611 | if (cv) { |
1612 | dSP; | |
924508f0 | 1613 | PUSHMARK(SP); |
3280af22 | 1614 | XPUSHs((SV*)PL_compiling.cop_filegv); |
3841441e CS |
1615 | PUTBACK; |
1616 | perl_call_sv((SV*)cv, G_DISCARD); | |
1617 | } | |
1618 | } | |
79072805 | 1619 | } |
79072805 LW |
1620 | } |
1621 | ||
1622 | OP * | |
8ac85365 | 1623 | localize(OP *o, I32 lex) |
79072805 LW |
1624 | { |
1625 | if (o->op_flags & OPf_PARENS) | |
1626 | list(o); | |
8990e307 | 1627 | else { |
3280af22 | 1628 | if (PL_dowarn && PL_bufptr > PL_oldbufptr && PL_bufptr[-1] == ',') { |
8990e307 | 1629 | char *s; |
3280af22 | 1630 | for (s = PL_bufptr; *s && (isALNUM(*s) || strchr("@$%, ",*s)); s++) ; |
a0d0e21e | 1631 | if (*s == ';' || *s == '=') |
8990e307 LW |
1632 | warn("Parens missing around \"%s\" list", lex ? "my" : "local"); |
1633 | } | |
1634 | } | |
3280af22 NIS |
1635 | PL_in_my = FALSE; |
1636 | PL_in_my_stash = Nullhv; | |
93a17b20 LW |
1637 | if (lex) |
1638 | return my(o); | |
1639 | else | |
463ee0b2 | 1640 | return mod(o, OP_NULL); /* a bit kludgey */ |
79072805 LW |
1641 | } |
1642 | ||
1643 | OP * | |
8ac85365 | 1644 | jmaybe(OP *o) |
79072805 LW |
1645 | { |
1646 | if (o->op_type == OP_LIST) { | |
554b3eca MB |
1647 | OP *o2; |
1648 | #ifdef USE_THREADS | |
2faa37cc | 1649 | o2 = newOP(OP_THREADSV, 0); |
54b9620d | 1650 | o2->op_targ = find_threadsv(";"); |
554b3eca MB |
1651 | #else |
1652 | o2 = newSVREF(newGVOP(OP_GV, 0, gv_fetchpv(";", TRUE, SVt_PV))), | |
1653 | #endif /* USE_THREADS */ | |
1654 | o = convert(OP_JOIN, 0, prepend_elem(OP_LIST, o2, o)); | |
79072805 LW |
1655 | } |
1656 | return o; | |
1657 | } | |
1658 | ||
1659 | OP * | |
8ac85365 | 1660 | fold_constants(register OP *o) |
79072805 | 1661 | { |
11343788 | 1662 | dTHR; |
79072805 LW |
1663 | register OP *curop; |
1664 | I32 type = o->op_type; | |
748a9306 | 1665 | SV *sv; |
79072805 LW |
1666 | |
1667 | if (opargs[type] & OA_RETSCALAR) | |
1668 | scalar(o); | |
1669 | if (opargs[type] & OA_TARGET) | |
ed6116ce | 1670 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 | 1671 | |
3280af22 | 1672 | if ((opargs[type] & OA_OTHERINT) && (PL_hints & HINT_INTEGER)) |
a0d0e21e | 1673 | o->op_ppaddr = ppaddr[type = ++(o->op_type)]; |
85e6fe83 | 1674 | |
79072805 LW |
1675 | if (!(opargs[type] & OA_FOLDCONST)) |
1676 | goto nope; | |
1677 | ||
de939608 CS |
1678 | switch (type) { |
1679 | case OP_SPRINTF: | |
1680 | case OP_UCFIRST: | |
1681 | case OP_LCFIRST: | |
1682 | case OP_UC: | |
1683 | case OP_LC: | |
69dcf70c MB |
1684 | case OP_SLT: |
1685 | case OP_SGT: | |
1686 | case OP_SLE: | |
1687 | case OP_SGE: | |
1688 | case OP_SCMP: | |
1689 | ||
de939608 CS |
1690 | if (o->op_private & OPpLOCALE) |
1691 | goto nope; | |
1692 | } | |
1693 | ||
3280af22 | 1694 | if (PL_error_count) |
a0d0e21e LW |
1695 | goto nope; /* Don't try to run w/ errors */ |
1696 | ||
79072805 | 1697 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
93a17b20 LW |
1698 | if (curop->op_type != OP_CONST && |
1699 | curop->op_type != OP_LIST && | |
1700 | curop->op_type != OP_SCALAR && | |
a0d0e21e | 1701 | curop->op_type != OP_NULL && |
93a17b20 | 1702 | curop->op_type != OP_PUSHMARK) { |
79072805 LW |
1703 | goto nope; |
1704 | } | |
1705 | } | |
1706 | ||
1707 | curop = LINKLIST(o); | |
1708 | o->op_next = 0; | |
533c011a | 1709 | PL_op = curop; |
76e3520e | 1710 | CALLRUNOPS(); |
3280af22 | 1711 | sv = *(PL_stack_sp--); |
748a9306 | 1712 | if (o->op_targ && sv == PAD_SV(o->op_targ)) /* grab pad temp? */ |
79072805 | 1713 | pad_swipe(o->op_targ); |
748a9306 LW |
1714 | else if (SvTEMP(sv)) { /* grab mortal temp? */ |
1715 | (void)SvREFCNT_inc(sv); | |
1716 | SvTEMP_off(sv); | |
85e6fe83 | 1717 | } |
79072805 LW |
1718 | op_free(o); |
1719 | if (type == OP_RV2GV) | |
b1cb66bf | 1720 | return newGVOP(OP_GV, 0, (GV*)sv); |
748a9306 | 1721 | else { |
ee580363 GS |
1722 | /* try to smush double to int, but don't smush -2.0 to -2 */ |
1723 | if ((SvFLAGS(sv) & (SVf_IOK|SVf_NOK|SVf_POK)) == SVf_NOK && | |
1724 | type != OP_NEGATE) | |
1725 | { | |
748a9306 | 1726 | IV iv = SvIV(sv); |
ee580363 | 1727 | if ((double)iv == SvNV(sv)) { |
748a9306 LW |
1728 | SvREFCNT_dec(sv); |
1729 | sv = newSViv(iv); | |
1730 | } | |
b1cb66bf | 1731 | else |
1732 | SvIOK_off(sv); /* undo SvIV() damage */ | |
748a9306 LW |
1733 | } |
1734 | return newSVOP(OP_CONST, 0, sv); | |
1735 | } | |
aeea060c | 1736 | |
79072805 LW |
1737 | nope: |
1738 | if (!(opargs[type] & OA_OTHERINT)) | |
1739 | return o; | |
79072805 | 1740 | |
3280af22 | 1741 | if (!(PL_hints & HINT_INTEGER)) { |
a0d0e21e | 1742 | if (type == OP_DIVIDE || !(o->op_flags & OPf_KIDS)) |
85e6fe83 LW |
1743 | return o; |
1744 | ||
1745 | for (curop = ((UNOP*)o)->op_first; curop; curop = curop->op_sibling) { | |
1746 | if (curop->op_type == OP_CONST) { | |
b1cb66bf | 1747 | if (SvIOK(((SVOP*)curop)->op_sv)) |
85e6fe83 LW |
1748 | continue; |
1749 | return o; | |
1750 | } | |
1751 | if (opargs[curop->op_type] & OA_RETINTEGER) | |
79072805 LW |
1752 | continue; |
1753 | return o; | |
1754 | } | |
a0d0e21e | 1755 | o->op_ppaddr = ppaddr[++(o->op_type)]; |
79072805 LW |
1756 | } |
1757 | ||
79072805 LW |
1758 | return o; |
1759 | } | |
1760 | ||
1761 | OP * | |
8ac85365 | 1762 | gen_constant_list(register OP *o) |
79072805 | 1763 | { |
11343788 | 1764 | dTHR; |
79072805 | 1765 | register OP *curop; |
3280af22 | 1766 | I32 oldtmps_floor = PL_tmps_floor; |
79072805 | 1767 | |
a0d0e21e | 1768 | list(o); |
3280af22 | 1769 | if (PL_error_count) |
a0d0e21e LW |
1770 | return o; /* Don't attempt to run with errors */ |
1771 | ||
533c011a | 1772 | PL_op = curop = LINKLIST(o); |
a0d0e21e | 1773 | o->op_next = 0; |
11343788 | 1774 | pp_pushmark(ARGS); |
76e3520e | 1775 | CALLRUNOPS(); |
533c011a | 1776 | PL_op = curop; |
11343788 | 1777 | pp_anonlist(ARGS); |
3280af22 | 1778 | PL_tmps_floor = oldtmps_floor; |
79072805 LW |
1779 | |
1780 | o->op_type = OP_RV2AV; | |
1781 | o->op_ppaddr = ppaddr[OP_RV2AV]; | |
79072805 | 1782 | curop = ((UNOP*)o)->op_first; |
3280af22 | 1783 | ((UNOP*)o)->op_first = newSVOP(OP_CONST, 0, SvREFCNT_inc(*PL_stack_sp--)); |
79072805 | 1784 | op_free(curop); |
79072805 LW |
1785 | linklist(o); |
1786 | return list(o); | |
1787 | } | |
1788 | ||
1789 | OP * | |
8ac85365 | 1790 | convert(I32 type, I32 flags, OP *o) |
79072805 LW |
1791 | { |
1792 | OP *kid; | |
a0d0e21e | 1793 | OP *last = 0; |
79072805 | 1794 | |
11343788 MB |
1795 | if (!o || o->op_type != OP_LIST) |
1796 | o = newLISTOP(OP_LIST, 0, o, Nullop); | |
748a9306 | 1797 | else |
5dc0d613 | 1798 | o->op_flags &= ~OPf_WANT; |
79072805 | 1799 | |
8990e307 | 1800 | if (!(opargs[type] & OA_MARK)) |
11343788 | 1801 | null(cLISTOPo->op_first); |
8990e307 | 1802 | |
11343788 MB |
1803 | o->op_type = type; |
1804 | o->op_ppaddr = ppaddr[type]; | |
1805 | o->op_flags |= flags; | |
79072805 | 1806 | |
11343788 MB |
1807 | o = CHECKOP(type, o); |
1808 | if (o->op_type != type) | |
1809 | return o; | |
79072805 | 1810 | |
11343788 | 1811 | if (cLISTOPo->op_children < 7) { |
79072805 | 1812 | /* XXX do we really need to do this if we're done appending?? */ |
11343788 | 1813 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 | 1814 | last = kid; |
11343788 | 1815 | cLISTOPo->op_last = last; /* in case check substituted last arg */ |
79072805 LW |
1816 | } |
1817 | ||
11343788 | 1818 | return fold_constants(o); |
79072805 LW |
1819 | } |
1820 | ||
1821 | /* List constructors */ | |
1822 | ||
1823 | OP * | |
8ac85365 | 1824 | append_elem(I32 type, OP *first, OP *last) |
79072805 LW |
1825 | { |
1826 | if (!first) | |
1827 | return last; | |
8990e307 LW |
1828 | |
1829 | if (!last) | |
79072805 | 1830 | return first; |
8990e307 | 1831 | |
a0d0e21e LW |
1832 | if (first->op_type != type || type==OP_LIST && first->op_flags & OPf_PARENS) |
1833 | return newLISTOP(type, 0, first, last); | |
79072805 | 1834 | |
a0d0e21e LW |
1835 | if (first->op_flags & OPf_KIDS) |
1836 | ((LISTOP*)first)->op_last->op_sibling = last; | |
1837 | else { | |
1838 | first->op_flags |= OPf_KIDS; | |
1839 | ((LISTOP*)first)->op_first = last; | |
1840 | } | |
1841 | ((LISTOP*)first)->op_last = last; | |
1842 | ((LISTOP*)first)->op_children++; | |
1843 | return first; | |
79072805 LW |
1844 | } |
1845 | ||
1846 | OP * | |
8ac85365 | 1847 | append_list(I32 type, LISTOP *first, LISTOP *last) |
79072805 LW |
1848 | { |
1849 | if (!first) | |
1850 | return (OP*)last; | |
8990e307 LW |
1851 | |
1852 | if (!last) | |
79072805 | 1853 | return (OP*)first; |
8990e307 LW |
1854 | |
1855 | if (first->op_type != type) | |
79072805 | 1856 | return prepend_elem(type, (OP*)first, (OP*)last); |
8990e307 LW |
1857 | |
1858 | if (last->op_type != type) | |
79072805 LW |
1859 | return append_elem(type, (OP*)first, (OP*)last); |
1860 | ||
1861 | first->op_last->op_sibling = last->op_first; | |
1862 | first->op_last = last->op_last; | |
1863 | first->op_children += last->op_children; | |
1864 | if (first->op_children) | |
1865 | last->op_flags |= OPf_KIDS; | |
1866 | ||
1867 | Safefree(last); | |
1868 | return (OP*)first; | |
1869 | } | |
1870 | ||
1871 | OP * | |
8ac85365 | 1872 | prepend_elem(I32 type, OP *first, OP *last) |
79072805 LW |
1873 | { |
1874 | if (!first) | |
1875 | return last; | |
8990e307 LW |
1876 | |
1877 | if (!last) | |
79072805 | 1878 | return first; |
8990e307 LW |
1879 | |
1880 | if (last->op_type == type) { | |
1881 | if (type == OP_LIST) { /* already a PUSHMARK there */ | |
1882 | first->op_sibling = ((LISTOP*)last)->op_first->op_sibling; | |
1883 | ((LISTOP*)last)->op_first->op_sibling = first; | |
1884 | } | |
1885 | else { | |
1886 | if (!(last->op_flags & OPf_KIDS)) { | |
1887 | ((LISTOP*)last)->op_last = first; | |
1888 | last->op_flags |= OPf_KIDS; | |
1889 | } | |
1890 | first->op_sibling = ((LISTOP*)last)->op_first; | |
1891 | ((LISTOP*)last)->op_first = first; | |
79072805 | 1892 | } |
79072805 LW |
1893 | ((LISTOP*)last)->op_children++; |
1894 | return last; | |
1895 | } | |
1896 | ||
1897 | return newLISTOP(type, 0, first, last); | |
1898 | } | |
1899 | ||
1900 | /* Constructors */ | |
1901 | ||
1902 | OP * | |
8ac85365 | 1903 | newNULLLIST(void) |
79072805 | 1904 | { |
8990e307 LW |
1905 | return newOP(OP_STUB, 0); |
1906 | } | |
1907 | ||
1908 | OP * | |
8ac85365 | 1909 | force_list(OP *o) |
8990e307 | 1910 | { |
11343788 MB |
1911 | if (!o || o->op_type != OP_LIST) |
1912 | o = newLISTOP(OP_LIST, 0, o, Nullop); | |
1913 | null(o); | |
1914 | return o; | |
79072805 LW |
1915 | } |
1916 | ||
1917 | OP * | |
8ac85365 | 1918 | newLISTOP(I32 type, I32 flags, OP *first, OP *last) |
79072805 LW |
1919 | { |
1920 | LISTOP *listop; | |
1921 | ||
1922 | Newz(1101, listop, 1, LISTOP); | |
1923 | ||
1924 | listop->op_type = type; | |
1925 | listop->op_ppaddr = ppaddr[type]; | |
1926 | listop->op_children = (first != 0) + (last != 0); | |
1927 | listop->op_flags = flags; | |
79072805 LW |
1928 | |
1929 | if (!last && first) | |
1930 | last = first; | |
1931 | else if (!first && last) | |
1932 | first = last; | |
8990e307 LW |
1933 | else if (first) |
1934 | first->op_sibling = last; | |
79072805 LW |
1935 | listop->op_first = first; |
1936 | listop->op_last = last; | |
8990e307 LW |
1937 | if (type == OP_LIST) { |
1938 | OP* pushop; | |
1939 | pushop = newOP(OP_PUSHMARK, 0); | |
1940 | pushop->op_sibling = first; | |
1941 | listop->op_first = pushop; | |
1942 | listop->op_flags |= OPf_KIDS; | |
1943 | if (!last) | |
1944 | listop->op_last = pushop; | |
1945 | } | |
1946 | else if (listop->op_children) | |
1947 | listop->op_flags |= OPf_KIDS; | |
79072805 LW |
1948 | |
1949 | return (OP*)listop; | |
1950 | } | |
1951 | ||
1952 | OP * | |
8ac85365 | 1953 | newOP(I32 type, I32 flags) |
79072805 | 1954 | { |
11343788 MB |
1955 | OP *o; |
1956 | Newz(1101, o, 1, OP); | |
1957 | o->op_type = type; | |
1958 | o->op_ppaddr = ppaddr[type]; | |
1959 | o->op_flags = flags; | |
79072805 | 1960 | |
11343788 MB |
1961 | o->op_next = o; |
1962 | o->op_private = 0 + (flags >> 8); | |
79072805 | 1963 | if (opargs[type] & OA_RETSCALAR) |
11343788 | 1964 | scalar(o); |
79072805 | 1965 | if (opargs[type] & OA_TARGET) |
11343788 MB |
1966 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
1967 | return CHECKOP(type, o); | |
79072805 LW |
1968 | } |
1969 | ||
1970 | OP * | |
8ac85365 | 1971 | newUNOP(I32 type, I32 flags, OP *first) |
79072805 LW |
1972 | { |
1973 | UNOP *unop; | |
1974 | ||
93a17b20 | 1975 | if (!first) |
aeea060c | 1976 | first = newOP(OP_STUB, 0); |
8990e307 LW |
1977 | if (opargs[type] & OA_MARK) |
1978 | first = force_list(first); | |
93a17b20 | 1979 | |
79072805 LW |
1980 | Newz(1101, unop, 1, UNOP); |
1981 | unop->op_type = type; | |
1982 | unop->op_ppaddr = ppaddr[type]; | |
1983 | unop->op_first = first; | |
1984 | unop->op_flags = flags | OPf_KIDS; | |
c07a80fd | 1985 | unop->op_private = 1 | (flags >> 8); |
e50aee73 | 1986 | unop = (UNOP*) CHECKOP(type, unop); |
79072805 LW |
1987 | if (unop->op_next) |
1988 | return (OP*)unop; | |
1989 | ||
a0d0e21e | 1990 | return fold_constants((OP *) unop); |
79072805 LW |
1991 | } |
1992 | ||
1993 | OP * | |
8ac85365 | 1994 | newBINOP(I32 type, I32 flags, OP *first, OP *last) |
79072805 LW |
1995 | { |
1996 | BINOP *binop; | |
1997 | Newz(1101, binop, 1, BINOP); | |
1998 | ||
1999 | if (!first) | |
2000 | first = newOP(OP_NULL, 0); | |
2001 | ||
2002 | binop->op_type = type; | |
2003 | binop->op_ppaddr = ppaddr[type]; | |
2004 | binop->op_first = first; | |
2005 | binop->op_flags = flags | OPf_KIDS; | |
2006 | if (!last) { | |
2007 | last = first; | |
c07a80fd | 2008 | binop->op_private = 1 | (flags >> 8); |
79072805 LW |
2009 | } |
2010 | else { | |
c07a80fd | 2011 | binop->op_private = 2 | (flags >> 8); |
79072805 LW |
2012 | first->op_sibling = last; |
2013 | } | |
2014 | ||
e50aee73 | 2015 | binop = (BINOP*)CHECKOP(type, binop); |
79072805 LW |
2016 | if (binop->op_next) |
2017 | return (OP*)binop; | |
2018 | ||
2019 | binop->op_last = last = binop->op_first->op_sibling; | |
2020 | ||
a0d0e21e | 2021 | return fold_constants((OP *)binop); |
79072805 LW |
2022 | } |
2023 | ||
2024 | OP * | |
8ac85365 | 2025 | pmtrans(OP *o, OP *expr, OP *repl) |
79072805 | 2026 | { |
79072805 LW |
2027 | SV *tstr = ((SVOP*)expr)->op_sv; |
2028 | SV *rstr = ((SVOP*)repl)->op_sv; | |
463ee0b2 LW |
2029 | STRLEN tlen; |
2030 | STRLEN rlen; | |
ec49126f | 2031 | register U8 *t = (U8*)SvPV(tstr, tlen); |
2032 | register U8 *r = (U8*)SvPV(rstr, rlen); | |
79072805 LW |
2033 | register I32 i; |
2034 | register I32 j; | |
8ac85365 | 2035 | I32 Delete; |
79072805 | 2036 | I32 complement; |
5d06d08e | 2037 | I32 squash; |
79072805 LW |
2038 | register short *tbl; |
2039 | ||
11343788 MB |
2040 | tbl = (short*)cPVOPo->op_pv; |
2041 | complement = o->op_private & OPpTRANS_COMPLEMENT; | |
8ac85365 | 2042 | Delete = o->op_private & OPpTRANS_DELETE; |
5d06d08e | 2043 | squash = o->op_private & OPpTRANS_SQUASH; |
79072805 LW |
2044 | |
2045 | if (complement) { | |
2046 | Zero(tbl, 256, short); | |
2047 | for (i = 0; i < tlen; i++) | |
ec49126f | 2048 | tbl[t[i]] = -1; |
79072805 LW |
2049 | for (i = 0, j = 0; i < 256; i++) { |
2050 | if (!tbl[i]) { | |
2051 | if (j >= rlen) { | |
8ac85365 | 2052 | if (Delete) |
79072805 LW |
2053 | tbl[i] = -2; |
2054 | else if (rlen) | |
ec49126f | 2055 | tbl[i] = r[j-1]; |
79072805 LW |
2056 | else |
2057 | tbl[i] = i; | |
2058 | } | |
2059 | else | |
ec49126f | 2060 | tbl[i] = r[j++]; |
79072805 LW |
2061 | } |
2062 | } | |
2063 | } | |
2064 | else { | |
8ac85365 | 2065 | if (!rlen && !Delete) { |
79072805 | 2066 | r = t; rlen = tlen; |
5d06d08e MB |
2067 | if (!squash) |
2068 | o->op_private |= OPpTRANS_COUNTONLY; | |
79072805 LW |
2069 | } |
2070 | for (i = 0; i < 256; i++) | |
2071 | tbl[i] = -1; | |
2072 | for (i = 0, j = 0; i < tlen; i++,j++) { | |
2073 | if (j >= rlen) { | |
8ac85365 | 2074 | if (Delete) { |
ec49126f | 2075 | if (tbl[t[i]] == -1) |
2076 | tbl[t[i]] = -2; | |
79072805 LW |
2077 | continue; |
2078 | } | |
2079 | --j; | |
2080 | } | |
ec49126f | 2081 | if (tbl[t[i]] == -1) |
2082 | tbl[t[i]] = r[j]; | |
79072805 LW |
2083 | } |
2084 | } | |
2085 | op_free(expr); | |
2086 | op_free(repl); | |
2087 | ||
11343788 | 2088 | return o; |
79072805 LW |
2089 | } |
2090 | ||
2091 | OP * | |
8ac85365 | 2092 | newPMOP(I32 type, I32 flags) |
79072805 | 2093 | { |
11343788 | 2094 | dTHR; |
79072805 LW |
2095 | PMOP *pmop; |
2096 | ||
2097 | Newz(1101, pmop, 1, PMOP); | |
2098 | pmop->op_type = type; | |
2099 | pmop->op_ppaddr = ppaddr[type]; | |
2100 | pmop->op_flags = flags; | |
c07a80fd | 2101 | pmop->op_private = 0 | (flags >> 8); |
79072805 | 2102 | |
3280af22 | 2103 | if (PL_hints & HINT_RE_TAINT) |
b3eb6a9b | 2104 | pmop->op_pmpermflags |= PMf_RETAINT; |
3280af22 | 2105 | if (PL_hints & HINT_LOCALE) |
b3eb6a9b GS |
2106 | pmop->op_pmpermflags |= PMf_LOCALE; |
2107 | pmop->op_pmflags = pmop->op_pmpermflags; | |
36477c24 | 2108 | |
79072805 | 2109 | /* link into pm list */ |
3280af22 NIS |
2110 | if (type != OP_TRANS && PL_curstash) { |
2111 | pmop->op_pmnext = HvPMROOT(PL_curstash); | |
2112 | HvPMROOT(PL_curstash) = pmop; | |
79072805 LW |
2113 | } |
2114 | ||
2115 | return (OP*)pmop; | |
2116 | } | |
2117 | ||
2118 | OP * | |
8ac85365 | 2119 | pmruntime(OP *o, OP *expr, OP *repl) |
79072805 | 2120 | { |
5c0ca799 | 2121 | dTHR; |
79072805 LW |
2122 | PMOP *pm; |
2123 | LOGOP *rcop; | |
ce862d02 | 2124 | I32 repl_has_vars = 0; |
79072805 | 2125 | |
11343788 MB |
2126 | if (o->op_type == OP_TRANS) |
2127 | return pmtrans(o, expr, repl); | |
79072805 | 2128 | |
3280af22 | 2129 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 2130 | pm = (PMOP*)o; |
79072805 LW |
2131 | |
2132 | if (expr->op_type == OP_CONST) { | |
463ee0b2 | 2133 | STRLEN plen; |
79072805 | 2134 | SV *pat = ((SVOP*)expr)->op_sv; |
463ee0b2 | 2135 | char *p = SvPV(pat, plen); |
11343788 | 2136 | if ((o->op_flags & OPf_SPECIAL) && strEQ(p, " ")) { |
93a17b20 | 2137 | sv_setpvn(pat, "\\s+", 3); |
463ee0b2 | 2138 | p = SvPV(pat, plen); |
79072805 LW |
2139 | pm->op_pmflags |= PMf_SKIPWHITE; |
2140 | } | |
15e52e56 | 2141 | pm->op_pmregexp = CALLREGCOMP(p, p + plen, pm); |
aeea060c | 2142 | if (strEQ("\\s+", pm->op_pmregexp->precomp)) |
85e6fe83 | 2143 | pm->op_pmflags |= PMf_WHITE; |
79072805 LW |
2144 | op_free(expr); |
2145 | } | |
2146 | else { | |
3280af22 NIS |
2147 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) |
2148 | expr = newUNOP((!(PL_hints & HINT_RE_EVAL) | |
2cd61cdb IZ |
2149 | ? OP_REGCRESET |
2150 | : OP_REGCMAYBE),0,expr); | |
463ee0b2 | 2151 | |
79072805 LW |
2152 | Newz(1101, rcop, 1, LOGOP); |
2153 | rcop->op_type = OP_REGCOMP; | |
2154 | rcop->op_ppaddr = ppaddr[OP_REGCOMP]; | |
2155 | rcop->op_first = scalar(expr); | |
3280af22 | 2156 | rcop->op_flags |= ((PL_hints & HINT_RE_EVAL) |
2cd61cdb IZ |
2157 | ? (OPf_SPECIAL | OPf_KIDS) |
2158 | : OPf_KIDS); | |
79072805 | 2159 | rcop->op_private = 1; |
11343788 | 2160 | rcop->op_other = o; |
79072805 LW |
2161 | |
2162 | /* establish postfix order */ | |
3280af22 | 2163 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) { |
463ee0b2 LW |
2164 | LINKLIST(expr); |
2165 | rcop->op_next = expr; | |
2166 | ((UNOP*)expr)->op_first->op_next = (OP*)rcop; | |
2167 | } | |
2168 | else { | |
2169 | rcop->op_next = LINKLIST(expr); | |
2170 | expr->op_next = (OP*)rcop; | |
2171 | } | |
79072805 | 2172 | |
11343788 | 2173 | prepend_elem(o->op_type, scalar((OP*)rcop), o); |
79072805 LW |
2174 | } |
2175 | ||
2176 | if (repl) { | |
748a9306 LW |
2177 | OP *curop; |
2178 | if (pm->op_pmflags & PMf_EVAL) | |
2179 | curop = 0; | |
554b3eca | 2180 | #ifdef USE_THREADS |
2faa37cc | 2181 | else if (repl->op_type == OP_THREADSV |
554b3eca | 2182 | && strchr("&`'123456789+", |
533c011a | 2183 | PL_threadsv_names[repl->op_targ])) |
554b3eca MB |
2184 | { |
2185 | curop = 0; | |
2186 | } | |
2187 | #endif /* USE_THREADS */ | |
748a9306 LW |
2188 | else if (repl->op_type == OP_CONST) |
2189 | curop = repl; | |
79072805 | 2190 | else { |
79072805 LW |
2191 | OP *lastop = 0; |
2192 | for (curop = LINKLIST(repl); curop!=repl; curop = LINKLIST(curop)) { | |
2193 | if (opargs[curop->op_type] & OA_DANGEROUS) { | |
554b3eca | 2194 | #ifdef USE_THREADS |
ce862d02 IZ |
2195 | if (curop->op_type == OP_THREADSV) { |
2196 | repl_has_vars = 1; | |
be949f6f | 2197 | if (strchr("&`'123456789+", curop->op_private)) |
ce862d02 | 2198 | break; |
554b3eca MB |
2199 | } |
2200 | #else | |
79072805 LW |
2201 | if (curop->op_type == OP_GV) { |
2202 | GV *gv = ((GVOP*)curop)->op_gv; | |
ce862d02 | 2203 | repl_has_vars = 1; |
93a17b20 | 2204 | if (strchr("&`'123456789+", *GvENAME(gv))) |
79072805 LW |
2205 | break; |
2206 | } | |
554b3eca | 2207 | #endif /* USE_THREADS */ |
79072805 LW |
2208 | else if (curop->op_type == OP_RV2CV) |
2209 | break; | |
2210 | else if (curop->op_type == OP_RV2SV || | |
2211 | curop->op_type == OP_RV2AV || | |
2212 | curop->op_type == OP_RV2HV || | |
2213 | curop->op_type == OP_RV2GV) { | |
2214 | if (lastop && lastop->op_type != OP_GV) /*funny deref?*/ | |
2215 | break; | |
2216 | } | |
748a9306 LW |
2217 | else if (curop->op_type == OP_PADSV || |
2218 | curop->op_type == OP_PADAV || | |
2219 | curop->op_type == OP_PADHV || | |
554b3eca | 2220 | curop->op_type == OP_PADANY) { |
ce862d02 | 2221 | repl_has_vars = 1; |
748a9306 | 2222 | } |
1167e5da SM |
2223 | else if (curop->op_type == OP_PUSHRE) |
2224 | ; /* Okay here, dangerous in newASSIGNOP */ | |
79072805 LW |
2225 | else |
2226 | break; | |
2227 | } | |
2228 | lastop = curop; | |
2229 | } | |
748a9306 | 2230 | } |
ce862d02 IZ |
2231 | if (curop == repl |
2232 | && !(repl_has_vars | |
2233 | && (!pm->op_pmregexp | |
2234 | || pm->op_pmregexp->reganch & ROPT_EVAL_SEEN))) { | |
748a9306 | 2235 | pm->op_pmflags |= PMf_CONST; /* const for long enough */ |
4633a7c4 | 2236 | pm->op_pmpermflags |= PMf_CONST; /* const for long enough */ |
11343788 | 2237 | prepend_elem(o->op_type, scalar(repl), o); |
748a9306 LW |
2238 | } |
2239 | else { | |
ce862d02 IZ |
2240 | if (curop == repl && !pm->op_pmregexp) { /* Has variables. */ |
2241 | pm->op_pmflags |= PMf_MAYBE_CONST; | |
2242 | pm->op_pmpermflags |= PMf_MAYBE_CONST; | |
2243 | } | |
748a9306 LW |
2244 | Newz(1101, rcop, 1, LOGOP); |
2245 | rcop->op_type = OP_SUBSTCONT; | |
2246 | rcop->op_ppaddr = ppaddr[OP_SUBSTCONT]; | |
2247 | rcop->op_first = scalar(repl); | |
2248 | rcop->op_flags |= OPf_KIDS; | |
2249 | rcop->op_private = 1; | |
11343788 | 2250 | rcop->op_other = o; |
748a9306 LW |
2251 | |
2252 | /* establish postfix order */ | |
2253 | rcop->op_next = LINKLIST(repl); | |
2254 | repl->op_next = (OP*)rcop; | |
2255 | ||
2256 | pm->op_pmreplroot = scalar((OP*)rcop); | |
2257 | pm->op_pmreplstart = LINKLIST(rcop); | |
2258 | rcop->op_next = 0; | |
79072805 LW |
2259 | } |
2260 | } | |
2261 | ||
2262 | return (OP*)pm; | |
2263 | } | |
2264 | ||
2265 | OP * | |
8ac85365 | 2266 | newSVOP(I32 type, I32 flags, SV *sv) |
79072805 LW |
2267 | { |
2268 | SVOP *svop; | |
2269 | Newz(1101, svop, 1, SVOP); | |
2270 | svop->op_type = type; | |
2271 | svop->op_ppaddr = ppaddr[type]; | |
2272 | svop->op_sv = sv; | |
2273 | svop->op_next = (OP*)svop; | |
2274 | svop->op_flags = flags; | |
2275 | if (opargs[type] & OA_RETSCALAR) | |
463ee0b2 | 2276 | scalar((OP*)svop); |
79072805 | 2277 | if (opargs[type] & OA_TARGET) |
ed6116ce | 2278 | svop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2279 | return CHECKOP(type, svop); |
79072805 LW |
2280 | } |
2281 | ||
2282 | OP * | |
8ac85365 | 2283 | newGVOP(I32 type, I32 flags, GV *gv) |
79072805 | 2284 | { |
11343788 | 2285 | dTHR; |
79072805 LW |
2286 | GVOP *gvop; |
2287 | Newz(1101, gvop, 1, GVOP); | |
2288 | gvop->op_type = type; | |
2289 | gvop->op_ppaddr = ppaddr[type]; | |
8990e307 | 2290 | gvop->op_gv = (GV*)SvREFCNT_inc(gv); |
79072805 LW |
2291 | gvop->op_next = (OP*)gvop; |
2292 | gvop->op_flags = flags; | |
2293 | if (opargs[type] & OA_RETSCALAR) | |
463ee0b2 | 2294 | scalar((OP*)gvop); |
79072805 | 2295 | if (opargs[type] & OA_TARGET) |
ed6116ce | 2296 | gvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2297 | return CHECKOP(type, gvop); |
79072805 LW |
2298 | } |
2299 | ||
2300 | OP * | |
8ac85365 | 2301 | newPVOP(I32 type, I32 flags, char *pv) |
79072805 LW |
2302 | { |
2303 | PVOP *pvop; | |
2304 | Newz(1101, pvop, 1, PVOP); | |
2305 | pvop->op_type = type; | |
2306 | pvop->op_ppaddr = ppaddr[type]; | |
2307 | pvop->op_pv = pv; | |
2308 | pvop->op_next = (OP*)pvop; | |
2309 | pvop->op_flags = flags; | |
2310 | if (opargs[type] & OA_RETSCALAR) | |
463ee0b2 | 2311 | scalar((OP*)pvop); |
79072805 | 2312 | if (opargs[type] & OA_TARGET) |
ed6116ce | 2313 | pvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2314 | return CHECKOP(type, pvop); |
79072805 LW |
2315 | } |
2316 | ||
79072805 | 2317 | void |
8ac85365 | 2318 | package(OP *o) |
79072805 | 2319 | { |
11343788 | 2320 | dTHR; |
93a17b20 | 2321 | SV *sv; |
79072805 | 2322 | |
3280af22 NIS |
2323 | save_hptr(&PL_curstash); |
2324 | save_item(PL_curstname); | |
11343788 | 2325 | if (o) { |
463ee0b2 LW |
2326 | STRLEN len; |
2327 | char *name; | |
11343788 | 2328 | sv = cSVOPo->op_sv; |
463ee0b2 | 2329 | name = SvPV(sv, len); |
3280af22 NIS |
2330 | PL_curstash = gv_stashpvn(name,len,TRUE); |
2331 | sv_setpvn(PL_curstname, name, len); | |
11343788 | 2332 | op_free(o); |
93a17b20 LW |
2333 | } |
2334 | else { | |
3280af22 NIS |
2335 | sv_setpv(PL_curstname,"<none>"); |
2336 | PL_curstash = Nullhv; | |
93a17b20 | 2337 | } |
3280af22 NIS |
2338 | PL_copline = NOLINE; |
2339 | PL_expect = XSTATE; | |
79072805 LW |
2340 | } |
2341 | ||
85e6fe83 | 2342 | void |
8ac85365 | 2343 | utilize(int aver, I32 floor, OP *version, OP *id, OP *arg) |
85e6fe83 | 2344 | { |
a0d0e21e LW |
2345 | OP *pack; |
2346 | OP *meth; | |
2347 | OP *rqop; | |
2348 | OP *imop; | |
b1cb66bf | 2349 | OP *veop; |
85e6fe83 | 2350 | |
a0d0e21e LW |
2351 | if (id->op_type != OP_CONST) |
2352 | croak("Module name must be constant"); | |
85e6fe83 | 2353 | |
b1cb66bf | 2354 | veop = Nullop; |
2355 | ||
2356 | if(version != Nullop) { | |
2357 | SV *vesv = ((SVOP*)version)->op_sv; | |
2358 | ||
2359 | if (arg == Nullop && !SvNIOK(vesv)) { | |
2360 | arg = version; | |
2361 | } | |
2362 | else { | |
2363 | OP *pack; | |
2364 | OP *meth; | |
2365 | ||
2366 | if (version->op_type != OP_CONST || !SvNIOK(vesv)) | |
2367 | croak("Version number must be constant number"); | |
2368 | ||
2369 | /* Make copy of id so we don't free it twice */ | |
2370 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); | |
2371 | ||
2372 | /* Fake up a method call to VERSION */ | |
2373 | meth = newSVOP(OP_CONST, 0, newSVpv("VERSION", 7)); | |
2374 | veop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, | |
2375 | append_elem(OP_LIST, | |
2376 | prepend_elem(OP_LIST, pack, list(version)), | |
2377 | newUNOP(OP_METHOD, 0, meth))); | |
2378 | } | |
2379 | } | |
aeea060c | 2380 | |
a0d0e21e | 2381 | /* Fake up an import/unimport */ |
4633a7c4 LW |
2382 | if (arg && arg->op_type == OP_STUB) |
2383 | imop = arg; /* no import on explicit () */ | |
b1cb66bf | 2384 | else if(SvNIOK(((SVOP*)id)->op_sv)) { |
2385 | imop = Nullop; /* use 5.0; */ | |
2386 | } | |
4633a7c4 LW |
2387 | else { |
2388 | /* Make copy of id so we don't free it twice */ | |
2389 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); | |
4633a7c4 LW |
2390 | meth = newSVOP(OP_CONST, 0, |
2391 | aver | |
2392 | ? newSVpv("import", 6) | |
2393 | : newSVpv("unimport", 8) | |
2394 | ); | |
2395 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, | |
a0d0e21e LW |
2396 | append_elem(OP_LIST, |
2397 | prepend_elem(OP_LIST, pack, list(arg)), | |
2398 | newUNOP(OP_METHOD, 0, meth))); | |
4633a7c4 LW |
2399 | } |
2400 | ||
2401 | /* Fake up a require */ | |
2402 | rqop = newUNOP(OP_REQUIRE, 0, id); | |
a0d0e21e LW |
2403 | |
2404 | /* Fake up the BEGIN {}, which does its thing immediately. */ | |
c07a80fd | 2405 | newSUB(floor, |
a0d0e21e | 2406 | newSVOP(OP_CONST, 0, newSVpv("BEGIN", 5)), |
4633a7c4 | 2407 | Nullop, |
a0d0e21e | 2408 | append_elem(OP_LINESEQ, |
b1cb66bf | 2409 | append_elem(OP_LINESEQ, |
2410 | newSTATEOP(0, Nullch, rqop), | |
2411 | newSTATEOP(0, Nullch, veop)), | |
a0d0e21e | 2412 | newSTATEOP(0, Nullch, imop) )); |
85e6fe83 | 2413 | |
3280af22 NIS |
2414 | PL_copline = NOLINE; |
2415 | PL_expect = XSTATE; | |
85e6fe83 LW |
2416 | } |
2417 | ||
79072805 | 2418 | OP * |
8ac85365 | 2419 | newSLICEOP(I32 flags, OP *subscript, OP *listval) |
79072805 LW |
2420 | { |
2421 | return newBINOP(OP_LSLICE, flags, | |
8990e307 LW |
2422 | list(force_list(subscript)), |
2423 | list(force_list(listval)) ); | |
79072805 LW |
2424 | } |
2425 | ||
76e3520e | 2426 | STATIC I32 |
8ac85365 | 2427 | list_assignment(register OP *o) |
79072805 | 2428 | { |
11343788 | 2429 | if (!o) |
79072805 LW |
2430 | return TRUE; |
2431 | ||
11343788 MB |
2432 | if (o->op_type == OP_NULL && o->op_flags & OPf_KIDS) |
2433 | o = cUNOPo->op_first; | |
79072805 | 2434 | |
11343788 MB |
2435 | if (o->op_type == OP_COND_EXPR) { |
2436 | I32 t = list_assignment(cCONDOPo->op_first->op_sibling); | |
2437 | I32 f = list_assignment(cCONDOPo->op_first->op_sibling->op_sibling); | |
79072805 LW |
2438 | |
2439 | if (t && f) | |
2440 | return TRUE; | |
2441 | if (t || f) | |
2442 | yyerror("Assignment to both a list and a scalar"); | |
2443 | return FALSE; | |
2444 | } | |
2445 | ||
11343788 MB |
2446 | if (o->op_type == OP_LIST || o->op_flags & OPf_PARENS || |
2447 | o->op_type == OP_RV2AV || o->op_type == OP_RV2HV || | |
2448 | o->op_type == OP_ASLICE || o->op_type == OP_HSLICE) | |
79072805 LW |
2449 | return TRUE; |
2450 | ||
11343788 | 2451 | if (o->op_type == OP_PADAV || o->op_type == OP_PADHV) |
93a17b20 LW |
2452 | return TRUE; |
2453 | ||
11343788 | 2454 | if (o->op_type == OP_RV2SV) |
79072805 LW |
2455 | return FALSE; |
2456 | ||
2457 | return FALSE; | |
2458 | } | |
2459 | ||
2460 | OP * | |
8ac85365 | 2461 | newASSIGNOP(I32 flags, OP *left, I32 optype, OP *right) |
79072805 | 2462 | { |
11343788 | 2463 | OP *o; |
79072805 | 2464 | |
a0d0e21e LW |
2465 | if (optype) { |
2466 | if (optype == OP_ANDASSIGN || optype == OP_ORASSIGN) { | |
2467 | return newLOGOP(optype, 0, | |
2468 | mod(scalar(left), optype), | |
2469 | newUNOP(OP_SASSIGN, 0, scalar(right))); | |
2470 | } | |
2471 | else { | |
2472 | return newBINOP(optype, OPf_STACKED, | |
2473 | mod(scalar(left), optype), scalar(right)); | |
2474 | } | |
2475 | } | |
2476 | ||
79072805 | 2477 | if (list_assignment(left)) { |
6ee623d5 | 2478 | dTHR; |
3280af22 NIS |
2479 | PL_modcount = 0; |
2480 | PL_eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ | |
463ee0b2 | 2481 | left = mod(left, OP_AASSIGN); |
3280af22 NIS |
2482 | if (PL_eval_start) |
2483 | PL_eval_start = 0; | |
748a9306 | 2484 | else { |
a0d0e21e LW |
2485 | op_free(left); |
2486 | op_free(right); | |
2487 | return Nullop; | |
2488 | } | |
11343788 | 2489 | o = newBINOP(OP_AASSIGN, flags, |
8990e307 LW |
2490 | list(force_list(right)), |
2491 | list(force_list(left)) ); | |
11343788 | 2492 | o->op_private = 0 | (flags >> 8); |
a0d0e21e | 2493 | if (!(left->op_private & OPpLVAL_INTRO)) { |
79072805 | 2494 | OP *curop; |
11343788 | 2495 | OP *lastop = o; |
3280af22 | 2496 | PL_generation++; |
11343788 | 2497 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
79072805 LW |
2498 | if (opargs[curop->op_type] & OA_DANGEROUS) { |
2499 | if (curop->op_type == OP_GV) { | |
2500 | GV *gv = ((GVOP*)curop)->op_gv; | |
3280af22 | 2501 | if (gv == PL_defgv || SvCUR(gv) == PL_generation) |
79072805 | 2502 | break; |
3280af22 | 2503 | SvCUR(gv) = PL_generation; |
79072805 | 2504 | } |
748a9306 LW |
2505 | else if (curop->op_type == OP_PADSV || |
2506 | curop->op_type == OP_PADAV || | |
2507 | curop->op_type == OP_PADHV || | |
2508 | curop->op_type == OP_PADANY) { | |
3280af22 | 2509 | SV **svp = AvARRAY(PL_comppad_name); |
8e07c86e | 2510 | SV *sv = svp[curop->op_targ]; |
3280af22 | 2511 | if (SvCUR(sv) == PL_generation) |
748a9306 | 2512 | break; |
3280af22 | 2513 | SvCUR(sv) = PL_generation; /* (SvCUR not used any more) */ |
748a9306 | 2514 | } |
79072805 LW |
2515 | else if (curop->op_type == OP_RV2CV) |
2516 | break; | |
2517 | else if (curop->op_type == OP_RV2SV || | |
2518 | curop->op_type == OP_RV2AV || | |
2519 | curop->op_type == OP_RV2HV || | |
2520 | curop->op_type == OP_RV2GV) { | |
2521 | if (lastop->op_type != OP_GV) /* funny deref? */ | |
2522 | break; | |
2523 | } | |
1167e5da SM |
2524 | else if (curop->op_type == OP_PUSHRE) { |
2525 | if (((PMOP*)curop)->op_pmreplroot) { | |
2526 | GV *gv = (GV*)((PMOP*)curop)->op_pmreplroot; | |
3280af22 | 2527 | if (gv == PL_defgv || SvCUR(gv) == PL_generation) |
1167e5da | 2528 | break; |
3280af22 | 2529 | SvCUR(gv) = PL_generation; |
1167e5da SM |
2530 | } |
2531 | } | |
79072805 LW |
2532 | else |
2533 | break; | |
2534 | } | |
2535 | lastop = curop; | |
2536 | } | |
11343788 MB |
2537 | if (curop != o) |
2538 | o->op_private = OPpASSIGN_COMMON; | |
79072805 | 2539 | } |
c07a80fd | 2540 | if (right && right->op_type == OP_SPLIT) { |
2541 | OP* tmpop; | |
2542 | if ((tmpop = ((LISTOP*)right)->op_first) && | |
2543 | tmpop->op_type == OP_PUSHRE) | |
2544 | { | |
2545 | PMOP *pm = (PMOP*)tmpop; | |
2546 | if (left->op_type == OP_RV2AV && | |
2547 | !(left->op_private & OPpLVAL_INTRO) && | |
11343788 | 2548 | !(o->op_private & OPpASSIGN_COMMON) ) |
c07a80fd | 2549 | { |
2550 | tmpop = ((UNOP*)left)->op_first; | |
2551 | if (tmpop->op_type == OP_GV && !pm->op_pmreplroot) { | |
2552 | pm->op_pmreplroot = (OP*)((GVOP*)tmpop)->op_gv; | |
2553 | pm->op_pmflags |= PMf_ONCE; | |
11343788 | 2554 | tmpop = cUNOPo->op_first; /* to list (nulled) */ |
c07a80fd | 2555 | tmpop = ((UNOP*)tmpop)->op_first; /* to pushmark */ |
2556 | tmpop->op_sibling = Nullop; /* don't free split */ | |
2557 | right->op_next = tmpop->op_next; /* fix starting loc */ | |
11343788 | 2558 | op_free(o); /* blow off assign */ |
54310121 | 2559 | right->op_flags &= ~OPf_WANT; |
a5f75d66 | 2560 | /* "I don't know and I don't care." */ |
c07a80fd | 2561 | return right; |
2562 | } | |
2563 | } | |
2564 | else { | |
3280af22 | 2565 | if (PL_modcount < 10000 && |
c07a80fd | 2566 | ((LISTOP*)right)->op_last->op_type == OP_CONST) |
2567 | { | |
2568 | SV *sv = ((SVOP*)((LISTOP*)right)->op_last)->op_sv; | |
2569 | if (SvIVX(sv) == 0) | |
3280af22 | 2570 | sv_setiv(sv, PL_modcount+1); |
c07a80fd | 2571 | } |
2572 | } | |
2573 | } | |
2574 | } | |
11343788 | 2575 | return o; |
79072805 LW |
2576 | } |
2577 | if (!right) | |
2578 | right = newOP(OP_UNDEF, 0); | |
2579 | if (right->op_type == OP_READLINE) { | |
2580 | right->op_flags |= OPf_STACKED; | |
463ee0b2 | 2581 | return newBINOP(OP_NULL, flags, mod(scalar(left), OP_SASSIGN), scalar(right)); |
79072805 | 2582 | } |
a0d0e21e | 2583 | else { |
3280af22 | 2584 | PL_eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ |
11343788 | 2585 | o = newBINOP(OP_SASSIGN, flags, |
463ee0b2 | 2586 | scalar(right), mod(scalar(left), OP_SASSIGN) ); |
3280af22 NIS |
2587 | if (PL_eval_start) |
2588 | PL_eval_start = 0; | |
748a9306 | 2589 | else { |
11343788 | 2590 | op_free(o); |
a0d0e21e LW |
2591 | return Nullop; |
2592 | } | |
2593 | } | |
11343788 | 2594 | return o; |
79072805 LW |
2595 | } |
2596 | ||
2597 | OP * | |
8ac85365 | 2598 | newSTATEOP(I32 flags, char *label, OP *o) |
79072805 | 2599 | { |
11343788 | 2600 | dTHR; |
bbce6d69 | 2601 | U32 seq = intro_my(); |
79072805 LW |
2602 | register COP *cop; |
2603 | ||
2604 | Newz(1101, cop, 1, COP); | |
3280af22 | 2605 | if (PERLDB_LINE && PL_curcop->cop_line && PL_curstash != PL_debstash) { |
8990e307 LW |
2606 | cop->op_type = OP_DBSTATE; |
2607 | cop->op_ppaddr = ppaddr[ OP_DBSTATE ]; | |
2608 | } | |
2609 | else { | |
2610 | cop->op_type = OP_NEXTSTATE; | |
2611 | cop->op_ppaddr = ppaddr[ OP_NEXTSTATE ]; | |
2612 | } | |
79072805 | 2613 | cop->op_flags = flags; |
c07a80fd | 2614 | cop->op_private = 0 | (flags >> 8); |
ff0cee69 | 2615 | #ifdef NATIVE_HINTS |
2616 | cop->op_private |= NATIVE_HINTS; | |
2617 | #endif | |
79072805 LW |
2618 | cop->op_next = (OP*)cop; |
2619 | ||
463ee0b2 LW |
2620 | if (label) { |
2621 | cop->cop_label = label; | |
3280af22 | 2622 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 2623 | } |
bbce6d69 | 2624 | cop->cop_seq = seq; |
3280af22 | 2625 | cop->cop_arybase = PL_curcop->cop_arybase; |
79072805 | 2626 | |
3280af22 NIS |
2627 | if (PL_copline == NOLINE) |
2628 | cop->cop_line = PL_curcop->cop_line; | |
79072805 | 2629 | else { |
3280af22 NIS |
2630 | cop->cop_line = PL_copline; |
2631 | PL_copline = NOLINE; | |
79072805 | 2632 | } |
3280af22 NIS |
2633 | cop->cop_filegv = (GV*)SvREFCNT_inc(PL_curcop->cop_filegv); |
2634 | cop->cop_stash = PL_curstash; | |
79072805 | 2635 | |
3280af22 NIS |
2636 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
2637 | SV **svp = av_fetch(GvAV(PL_curcop->cop_filegv),(I32)cop->cop_line, FALSE); | |
2638 | if (svp && *svp != &PL_sv_undef && !SvIOK(*svp)) { | |
a0d0e21e | 2639 | (void)SvIOK_on(*svp); |
a5f75d66 | 2640 | SvIVX(*svp) = 1; |
93a17b20 LW |
2641 | SvSTASH(*svp) = (HV*)cop; |
2642 | } | |
2643 | } | |
2644 | ||
11343788 | 2645 | return prepend_elem(OP_LINESEQ, (OP*)cop, o); |
79072805 LW |
2646 | } |
2647 | ||
bbce6d69 | 2648 | /* "Introduce" my variables to visible status. */ |
2649 | U32 | |
8ac85365 | 2650 | intro_my(void) |
bbce6d69 | 2651 | { |
2652 | SV **svp; | |
2653 | SV *sv; | |
2654 | I32 i; | |
2655 | ||
3280af22 NIS |
2656 | if (! PL_min_intro_pending) |
2657 | return PL_cop_seqmax; | |
bbce6d69 | 2658 | |
3280af22 NIS |
2659 | svp = AvARRAY(PL_comppad_name); |
2660 | for (i = PL_min_intro_pending; i <= PL_max_intro_pending; i++) { | |
2661 | if ((sv = svp[i]) && sv != &PL_sv_undef && !SvIVX(sv)) { | |
bbce6d69 | 2662 | SvIVX(sv) = 999999999; /* Don't know scope end yet. */ |
3280af22 | 2663 | SvNVX(sv) = (double)PL_cop_seqmax; |
bbce6d69 | 2664 | } |
2665 | } | |
3280af22 NIS |
2666 | PL_min_intro_pending = 0; |
2667 | PL_comppad_name_fill = PL_max_intro_pending; /* Needn't search higher */ | |
2668 | return PL_cop_seqmax++; | |
bbce6d69 | 2669 | } |
2670 | ||
79072805 | 2671 | OP * |
8ac85365 | 2672 | newLOGOP(I32 type, I32 flags, OP *first, OP *other) |
79072805 | 2673 | { |
883ffac3 CS |
2674 | return new_logop(type, flags, &first, &other); |
2675 | } | |
2676 | ||
3bd495df | 2677 | STATIC OP * |
883ffac3 CS |
2678 | new_logop(I32 type, I32 flags, OP** firstp, OP** otherp) |
2679 | { | |
11343788 | 2680 | dTHR; |
79072805 | 2681 | LOGOP *logop; |
11343788 | 2682 | OP *o; |
883ffac3 CS |
2683 | OP *first = *firstp; |
2684 | OP *other = *otherp; | |
79072805 | 2685 | |
a0d0e21e LW |
2686 | if (type == OP_XOR) /* Not short circuit, but here by precedence. */ |
2687 | return newBINOP(type, flags, scalar(first), scalar(other)); | |
2688 | ||
8990e307 | 2689 | scalarboolean(first); |
79072805 LW |
2690 | /* optimize "!a && b" to "a || b", and "!a || b" to "a && b" */ |
2691 | if (first->op_type == OP_NOT && (first->op_flags & OPf_SPECIAL)) { | |
2692 | if (type == OP_AND || type == OP_OR) { | |
2693 | if (type == OP_AND) | |
2694 | type = OP_OR; | |
2695 | else | |
2696 | type = OP_AND; | |
11343788 | 2697 | o = first; |
883ffac3 | 2698 | first = *firstp = cUNOPo->op_first; |
11343788 MB |
2699 | if (o->op_next) |
2700 | first->op_next = o->op_next; | |
2701 | cUNOPo->op_first = Nullop; | |
2702 | op_free(o); | |
79072805 LW |
2703 | } |
2704 | } | |
2705 | if (first->op_type == OP_CONST) { | |
3280af22 | 2706 | if (PL_dowarn && (first->op_private & OPpCONST_BARE)) |
c07a80fd | 2707 | warn("Probable precedence problem on %s", op_desc[type]); |
79072805 LW |
2708 | if ((type == OP_AND) == (SvTRUE(((SVOP*)first)->op_sv))) { |
2709 | op_free(first); | |
883ffac3 | 2710 | *firstp = Nullop; |
79072805 LW |
2711 | return other; |
2712 | } | |
2713 | else { | |
2714 | op_free(other); | |
883ffac3 | 2715 | *otherp = Nullop; |
79072805 LW |
2716 | return first; |
2717 | } | |
2718 | } | |
2719 | else if (first->op_type == OP_WANTARRAY) { | |
2720 | if (type == OP_AND) | |
2721 | list(other); | |
2722 | else | |
2723 | scalar(other); | |
2724 | } | |
3280af22 | 2725 | else if (PL_dowarn && (first->op_flags & OPf_KIDS)) { |
a6006777 | 2726 | OP *k1 = ((UNOP*)first)->op_first; |
2727 | OP *k2 = k1->op_sibling; | |
2728 | OPCODE warnop = 0; | |
2729 | switch (first->op_type) | |
2730 | { | |
2731 | case OP_NULL: | |
2732 | if (k2 && k2->op_type == OP_READLINE | |
2733 | && (k2->op_flags & OPf_STACKED) | |
55d729e4 | 2734 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
a6006777 | 2735 | warnop = k2->op_type; |
2736 | break; | |
2737 | ||
2738 | case OP_SASSIGN: | |
68dc0745 | 2739 | if (k1->op_type == OP_READDIR |
2740 | || k1->op_type == OP_GLOB | |
2741 | || k1->op_type == OP_EACH) | |
a6006777 | 2742 | warnop = k1->op_type; |
2743 | break; | |
2744 | } | |
8ebc5c01 | 2745 | if (warnop) { |
3280af22 NIS |
2746 | line_t oldline = PL_curcop->cop_line; |
2747 | PL_curcop->cop_line = PL_copline; | |
68dc0745 | 2748 | warn("Value of %s%s can be \"0\"; test with defined()", |
2749 | op_desc[warnop], | |
2750 | ((warnop == OP_READLINE || warnop == OP_GLOB) | |
2751 | ? " construct" : "() operator")); | |
3280af22 | 2752 | PL_curcop->cop_line = oldline; |
8ebc5c01 | 2753 | } |
a6006777 | 2754 | } |
79072805 LW |
2755 | |
2756 | if (!other) | |
2757 | return first; | |
2758 | ||
a0d0e21e LW |
2759 | if (type == OP_ANDASSIGN || type == OP_ORASSIGN) |
2760 | other->op_private |= OPpASSIGN_BACKWARDS; /* other is an OP_SASSIGN */ | |
2761 | ||
79072805 LW |
2762 | Newz(1101, logop, 1, LOGOP); |
2763 | ||
2764 | logop->op_type = type; | |
2765 | logop->op_ppaddr = ppaddr[type]; | |
2766 | logop->op_first = first; | |
2767 | logop->op_flags = flags | OPf_KIDS; | |
2768 | logop->op_other = LINKLIST(other); | |
c07a80fd | 2769 | logop->op_private = 1 | (flags >> 8); |
79072805 LW |
2770 | |
2771 | /* establish postfix order */ | |
2772 | logop->op_next = LINKLIST(first); | |
2773 | first->op_next = (OP*)logop; | |
2774 | first->op_sibling = other; | |
2775 | ||
11343788 MB |
2776 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
2777 | other->op_next = o; | |
79072805 | 2778 | |
11343788 | 2779 | return o; |
79072805 LW |
2780 | } |
2781 | ||
2782 | OP * | |
8ac85365 | 2783 | newCONDOP(I32 flags, OP *first, OP *trueop, OP *falseop) |
79072805 | 2784 | { |
11343788 | 2785 | dTHR; |
79072805 | 2786 | CONDOP *condop; |
11343788 | 2787 | OP *o; |
79072805 | 2788 | |
b1cb66bf | 2789 | if (!falseop) |
2790 | return newLOGOP(OP_AND, 0, first, trueop); | |
2791 | if (!trueop) | |
2792 | return newLOGOP(OP_OR, 0, first, falseop); | |
79072805 | 2793 | |
8990e307 | 2794 | scalarboolean(first); |
79072805 LW |
2795 | if (first->op_type == OP_CONST) { |
2796 | if (SvTRUE(((SVOP*)first)->op_sv)) { | |
2797 | op_free(first); | |
b1cb66bf | 2798 | op_free(falseop); |
2799 | return trueop; | |
79072805 LW |
2800 | } |
2801 | else { | |
2802 | op_free(first); | |
b1cb66bf | 2803 | op_free(trueop); |
2804 | return falseop; | |
79072805 LW |
2805 | } |
2806 | } | |
2807 | else if (first->op_type == OP_WANTARRAY) { | |
b1cb66bf | 2808 | list(trueop); |
2809 | scalar(falseop); | |
79072805 LW |
2810 | } |
2811 | Newz(1101, condop, 1, CONDOP); | |
2812 | ||
2813 | condop->op_type = OP_COND_EXPR; | |
2814 | condop->op_ppaddr = ppaddr[OP_COND_EXPR]; | |
2815 | condop->op_first = first; | |
2816 | condop->op_flags = flags | OPf_KIDS; | |
b1cb66bf | 2817 | condop->op_true = LINKLIST(trueop); |
2818 | condop->op_false = LINKLIST(falseop); | |
c07a80fd | 2819 | condop->op_private = 1 | (flags >> 8); |
79072805 LW |
2820 | |
2821 | /* establish postfix order */ | |
2822 | condop->op_next = LINKLIST(first); | |
2823 | first->op_next = (OP*)condop; | |
2824 | ||
b1cb66bf | 2825 | first->op_sibling = trueop; |
2826 | trueop->op_sibling = falseop; | |
11343788 | 2827 | o = newUNOP(OP_NULL, 0, (OP*)condop); |
79072805 | 2828 | |
5dc0d613 MB |
2829 | trueop->op_next = o; |
2830 | falseop->op_next = o; | |
79072805 | 2831 | |
11343788 | 2832 | return o; |
79072805 LW |
2833 | } |
2834 | ||
2835 | OP * | |
8ac85365 | 2836 | newRANGE(I32 flags, OP *left, OP *right) |
79072805 | 2837 | { |
b35b2403 | 2838 | dTHR; |
79072805 LW |
2839 | CONDOP *condop; |
2840 | OP *flip; | |
2841 | OP *flop; | |
11343788 | 2842 | OP *o; |
79072805 LW |
2843 | |
2844 | Newz(1101, condop, 1, CONDOP); | |
2845 | ||
2846 | condop->op_type = OP_RANGE; | |
2847 | condop->op_ppaddr = ppaddr[OP_RANGE]; | |
2848 | condop->op_first = left; | |
2849 | condop->op_flags = OPf_KIDS; | |
2850 | condop->op_true = LINKLIST(left); | |
2851 | condop->op_false = LINKLIST(right); | |
c07a80fd | 2852 | condop->op_private = 1 | (flags >> 8); |
79072805 LW |
2853 | |
2854 | left->op_sibling = right; | |
2855 | ||
2856 | condop->op_next = (OP*)condop; | |
2857 | flip = newUNOP(OP_FLIP, flags, (OP*)condop); | |
2858 | flop = newUNOP(OP_FLOP, 0, flip); | |
11343788 | 2859 | o = newUNOP(OP_NULL, 0, flop); |
79072805 LW |
2860 | linklist(flop); |
2861 | ||
2862 | left->op_next = flip; | |
2863 | right->op_next = flop; | |
2864 | ||
ed6116ce | 2865 | condop->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 | 2866 | sv_upgrade(PAD_SV(condop->op_targ), SVt_PVNV); |
ed6116ce | 2867 | flip->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 LW |
2868 | sv_upgrade(PAD_SV(flip->op_targ), SVt_PVNV); |
2869 | ||
2870 | flip->op_private = left->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
2871 | flop->op_private = right->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
2872 | ||
11343788 | 2873 | flip->op_next = o; |
79072805 | 2874 | if (!flip->op_private || !flop->op_private) |
11343788 | 2875 | linklist(o); /* blow off optimizer unless constant */ |
79072805 | 2876 | |
11343788 | 2877 | return o; |
79072805 LW |
2878 | } |
2879 | ||
2880 | OP * | |
8ac85365 | 2881 | newLOOPOP(I32 flags, I32 debuggable, OP *expr, OP *block) |
79072805 | 2882 | { |
11343788 | 2883 | dTHR; |
463ee0b2 | 2884 | OP* listop; |
11343788 | 2885 | OP* o; |
463ee0b2 | 2886 | int once = block && block->op_flags & OPf_SPECIAL && |
a0d0e21e | 2887 | (block->op_type == OP_ENTERSUB || block->op_type == OP_NULL); |
93a17b20 | 2888 | |
463ee0b2 LW |
2889 | if (expr) { |
2890 | if (once && expr->op_type == OP_CONST && !SvTRUE(((SVOP*)expr)->op_sv)) | |
2891 | return block; /* do {} while 0 does once */ | |
fb73857a | 2892 | if (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB |
2893 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB)) { | |
774d564b | 2894 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 2895 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 GS |
2896 | } else if (expr->op_flags & OPf_KIDS) { |
2897 | OP *k1 = ((UNOP*)expr)->op_first; | |
2898 | OP *k2 = (k1) ? k1->op_sibling : NULL; | |
2899 | switch (expr->op_type) { | |
2900 | case OP_NULL: | |
2901 | if (k2 && k2->op_type == OP_READLINE | |
2902 | && (k2->op_flags & OPf_STACKED) | |
2903 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) | |
2904 | expr = newUNOP(OP_DEFINED, 0, expr); | |
2905 | break; | |
2906 | ||
2907 | case OP_SASSIGN: | |
2908 | if (k1->op_type == OP_READDIR | |
2909 | || k1->op_type == OP_GLOB | |
2910 | || k1->op_type == OP_EACH) | |
2911 | expr = newUNOP(OP_DEFINED, 0, expr); | |
2912 | break; | |
2913 | } | |
774d564b | 2914 | } |
463ee0b2 | 2915 | } |
93a17b20 | 2916 | |
8990e307 | 2917 | listop = append_elem(OP_LINESEQ, block, newOP(OP_UNSTACK, 0)); |
883ffac3 | 2918 | o = new_logop(OP_AND, 0, &expr, &listop); |
463ee0b2 | 2919 | |
883ffac3 CS |
2920 | if (listop) |
2921 | ((LISTOP*)listop)->op_last->op_next = LINKLIST(o); | |
79072805 | 2922 | |
11343788 MB |
2923 | if (once && o != listop) |
2924 | o->op_next = ((LOGOP*)cUNOPo->op_first)->op_other; | |
79072805 | 2925 | |
11343788 MB |
2926 | if (o == listop) |
2927 | o = newUNOP(OP_NULL, 0, o); /* or do {} while 1 loses outer block */ | |
748a9306 | 2928 | |
11343788 MB |
2929 | o->op_flags |= flags; |
2930 | o = scope(o); | |
2931 | o->op_flags |= OPf_SPECIAL; /* suppress POPBLOCK curpm restoration*/ | |
2932 | return o; | |
79072805 LW |
2933 | } |
2934 | ||
2935 | OP * | |
8ac85365 | 2936 | newWHILEOP(I32 flags, I32 debuggable, LOOP *loop, I32 whileline, OP *expr, OP *block, OP *cont) |
79072805 | 2937 | { |
11343788 | 2938 | dTHR; |
79072805 LW |
2939 | OP *redo; |
2940 | OP *next = 0; | |
2941 | OP *listop; | |
11343788 | 2942 | OP *o; |
79072805 LW |
2943 | OP *condop; |
2944 | ||
fb73857a | 2945 | if (expr && (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB |
2946 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB))) { | |
748a9306 | 2947 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 2948 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 GS |
2949 | } else if (expr && (expr->op_flags & OPf_KIDS)) { |
2950 | OP *k1 = ((UNOP*)expr)->op_first; | |
2951 | OP *k2 = (k1) ? k1->op_sibling : NULL; | |
2952 | switch (expr->op_type) { | |
2953 | case OP_NULL: | |
2954 | if (k2 && k2->op_type == OP_READLINE | |
2955 | && (k2->op_flags & OPf_STACKED) | |
2956 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) | |
2957 | expr = newUNOP(OP_DEFINED, 0, expr); | |
2958 | break; | |
2959 | ||
2960 | case OP_SASSIGN: | |
2961 | if (k1->op_type == OP_READDIR | |
2962 | || k1->op_type == OP_GLOB | |
2963 | || k1->op_type == OP_EACH) | |
2964 | expr = newUNOP(OP_DEFINED, 0, expr); | |
2965 | break; | |
2966 | } | |
748a9306 | 2967 | } |
79072805 LW |
2968 | |
2969 | if (!block) | |
2970 | block = newOP(OP_NULL, 0); | |
2971 | ||
2972 | if (cont) | |
2973 | next = LINKLIST(cont); | |
fb73857a | 2974 | if (expr) { |
79072805 | 2975 | cont = append_elem(OP_LINESEQ, cont, newOP(OP_UNSTACK, 0)); |
fb73857a | 2976 | if ((line_t)whileline != NOLINE) { |
3280af22 | 2977 | PL_copline = whileline; |
fb73857a | 2978 | cont = append_elem(OP_LINESEQ, cont, |
2979 | newSTATEOP(0, Nullch, Nullop)); | |
2980 | } | |
2981 | } | |
79072805 | 2982 | |
463ee0b2 | 2983 | listop = append_list(OP_LINESEQ, (LISTOP*)block, (LISTOP*)cont); |
79072805 LW |
2984 | redo = LINKLIST(listop); |
2985 | ||
2986 | if (expr) { | |
3280af22 | 2987 | PL_copline = whileline; |
883ffac3 CS |
2988 | scalar(listop); |
2989 | o = new_logop(OP_AND, 0, &expr, &listop); | |
11343788 | 2990 | if (o == expr && o->op_type == OP_CONST && !SvTRUE(cSVOPo->op_sv)) { |
85e6fe83 | 2991 | op_free(expr); /* oops, it's a while (0) */ |
463ee0b2 | 2992 | op_free((OP*)loop); |
883ffac3 | 2993 | return Nullop; /* listop already freed by new_logop */ |
463ee0b2 | 2994 | } |
883ffac3 CS |
2995 | if (listop) |
2996 | ((LISTOP*)listop)->op_last->op_next = condop = | |
2997 | (o == listop ? redo : LINKLIST(o)); | |
79072805 LW |
2998 | if (!next) |
2999 | next = condop; | |
3000 | } | |
3001 | else | |
11343788 | 3002 | o = listop; |
79072805 LW |
3003 | |
3004 | if (!loop) { | |
3005 | Newz(1101,loop,1,LOOP); | |
3006 | loop->op_type = OP_ENTERLOOP; | |
3007 | loop->op_ppaddr = ppaddr[OP_ENTERLOOP]; | |
3008 | loop->op_private = 0; | |
3009 | loop->op_next = (OP*)loop; | |
3010 | } | |
3011 | ||
11343788 | 3012 | o = newBINOP(OP_LEAVELOOP, 0, (OP*)loop, o); |
79072805 LW |
3013 | |
3014 | loop->op_redoop = redo; | |
11343788 | 3015 | loop->op_lastop = o; |
79072805 LW |
3016 | |
3017 | if (next) | |
3018 | loop->op_nextop = next; | |
3019 | else | |
11343788 | 3020 | loop->op_nextop = o; |
79072805 | 3021 | |
11343788 MB |
3022 | o->op_flags |= flags; |
3023 | o->op_private |= (flags >> 8); | |
3024 | return o; | |
79072805 LW |
3025 | } |
3026 | ||
3027 | OP * | |
8990e307 | 3028 | newFOROP(I32 flags,char *label,line_t forline,OP *sv,OP *expr,OP *block,OP *cont) |
79072805 LW |
3029 | { |
3030 | LOOP *loop; | |
fb73857a | 3031 | OP *wop; |
85e6fe83 | 3032 | int padoff = 0; |
4633a7c4 | 3033 | I32 iterflags = 0; |
79072805 | 3034 | |
79072805 | 3035 | if (sv) { |
85e6fe83 | 3036 | if (sv->op_type == OP_RV2SV) { /* symbol table variable */ |
748a9306 LW |
3037 | sv->op_type = OP_RV2GV; |
3038 | sv->op_ppaddr = ppaddr[OP_RV2GV]; | |
79072805 | 3039 | } |
85e6fe83 LW |
3040 | else if (sv->op_type == OP_PADSV) { /* private variable */ |
3041 | padoff = sv->op_targ; | |
3042 | op_free(sv); | |
3043 | sv = Nullop; | |
3044 | } | |
54b9620d MB |
3045 | else if (sv->op_type == OP_THREADSV) { /* per-thread variable */ |
3046 | padoff = sv->op_targ; | |
3047 | iterflags |= OPf_SPECIAL; | |
3048 | op_free(sv); | |
3049 | sv = Nullop; | |
3050 | } | |
79072805 | 3051 | else |
c07a80fd | 3052 | croak("Can't use %s for loop variable", op_desc[sv->op_type]); |
79072805 LW |
3053 | } |
3054 | else { | |
54b9620d MB |
3055 | #ifdef USE_THREADS |
3056 | padoff = find_threadsv("_"); | |
3057 | iterflags |= OPf_SPECIAL; | |
3058 | #else | |
3280af22 | 3059 | sv = newGVOP(OP_GV, 0, PL_defgv); |
54b9620d | 3060 | #endif |
79072805 | 3061 | } |
5f05dabc | 3062 | if (expr->op_type == OP_RV2AV || expr->op_type == OP_PADAV) { |
89ea2908 | 3063 | expr = mod(force_list(scalar(ref(expr, OP_ITER))), OP_GREPSTART); |
4633a7c4 LW |
3064 | iterflags |= OPf_STACKED; |
3065 | } | |
89ea2908 GA |
3066 | else if (expr->op_type == OP_NULL && |
3067 | (expr->op_flags & OPf_KIDS) && | |
3068 | ((BINOP*)expr)->op_first->op_type == OP_FLOP) | |
3069 | { | |
3070 | /* Basically turn for($x..$y) into the same as for($x,$y), but we | |
3071 | * set the STACKED flag to indicate that these values are to be | |
3072 | * treated as min/max values by 'pp_iterinit'. | |
3073 | */ | |
3074 | UNOP* flip = (UNOP*)((UNOP*)((BINOP*)expr)->op_first)->op_first; | |
3075 | CONDOP* range = (CONDOP*) flip->op_first; | |
3076 | OP* left = range->op_first; | |
3077 | OP* right = left->op_sibling; | |
5152d7c7 | 3078 | LISTOP* listop; |
89ea2908 GA |
3079 | |
3080 | range->op_flags &= ~OPf_KIDS; | |
3081 | range->op_first = Nullop; | |
3082 | ||
5152d7c7 GS |
3083 | listop = (LISTOP*)newLISTOP(OP_LIST, 0, left, right); |
3084 | listop->op_first->op_next = range->op_true; | |
89ea2908 | 3085 | left->op_next = range->op_false; |
5152d7c7 GS |
3086 | right->op_next = (OP*)listop; |
3087 | listop->op_next = listop->op_first; | |
89ea2908 GA |
3088 | |
3089 | op_free(expr); | |
5152d7c7 | 3090 | expr = (OP*)(listop); |
89ea2908 GA |
3091 | null(expr); |
3092 | iterflags |= OPf_STACKED; | |
3093 | } | |
3094 | else { | |
3095 | expr = mod(force_list(expr), OP_GREPSTART); | |
3096 | } | |
3097 | ||
3098 | ||
4633a7c4 | 3099 | loop = (LOOP*)list(convert(OP_ENTERITER, iterflags, |
89ea2908 | 3100 | append_elem(OP_LIST, expr, scalar(sv)))); |
85e6fe83 LW |
3101 | assert(!loop->op_next); |
3102 | Renew(loop, 1, LOOP); | |
3103 | loop->op_targ = padoff; | |
fb73857a | 3104 | wop = newWHILEOP(flags, 1, loop, forline, newOP(OP_ITER, 0), block, cont); |
3280af22 | 3105 | PL_copline = forline; |
fb73857a | 3106 | return newSTATEOP(0, label, wop); |
79072805 LW |
3107 | } |
3108 | ||
8990e307 | 3109 | OP* |
8ac85365 | 3110 | newLOOPEX(I32 type, OP *label) |
8990e307 | 3111 | { |
11343788 MB |
3112 | dTHR; |
3113 | OP *o; | |
8990e307 | 3114 | if (type != OP_GOTO || label->op_type == OP_CONST) { |
cdaebead MB |
3115 | /* "last()" means "last" */ |
3116 | if (label->op_type == OP_STUB && (label->op_flags & OPf_PARENS)) | |
3117 | o = newOP(type, OPf_SPECIAL); | |
3118 | else { | |
3119 | o = newPVOP(type, 0, savepv(label->op_type == OP_CONST | |
3280af22 | 3120 | ? SvPVx(((SVOP*)label)->op_sv, PL_na) |
cdaebead MB |
3121 | : "")); |
3122 | } | |
8990e307 LW |
3123 | op_free(label); |
3124 | } | |
3125 | else { | |
a0d0e21e LW |
3126 | if (label->op_type == OP_ENTERSUB) |
3127 | label = newUNOP(OP_REFGEN, 0, mod(label, OP_REFGEN)); | |
11343788 | 3128 | o = newUNOP(type, OPf_STACKED, label); |
8990e307 | 3129 | } |
3280af22 | 3130 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 3131 | return o; |
8990e307 LW |
3132 | } |
3133 | ||
79072805 | 3134 | void |
8ac85365 | 3135 | cv_undef(CV *cv) |
79072805 | 3136 | { |
11343788 MB |
3137 | dTHR; |
3138 | #ifdef USE_THREADS | |
e858de61 MB |
3139 | if (CvMUTEXP(cv)) { |
3140 | MUTEX_DESTROY(CvMUTEXP(cv)); | |
3141 | Safefree(CvMUTEXP(cv)); | |
3142 | CvMUTEXP(cv) = 0; | |
3143 | } | |
11343788 MB |
3144 | #endif /* USE_THREADS */ |
3145 | ||
a0d0e21e | 3146 | if (!CvXSUB(cv) && CvROOT(cv)) { |
11343788 MB |
3147 | #ifdef USE_THREADS |
3148 | if (CvDEPTH(cv) || (CvOWNER(cv) && CvOWNER(cv) != thr)) | |
3149 | croak("Can't undef active subroutine"); | |
3150 | #else | |
a0d0e21e LW |
3151 | if (CvDEPTH(cv)) |
3152 | croak("Can't undef active subroutine"); | |
11343788 | 3153 | #endif /* USE_THREADS */ |
8990e307 | 3154 | ENTER; |
a0d0e21e | 3155 | |
3280af22 NIS |
3156 | SAVESPTR(PL_curpad); |
3157 | PL_curpad = 0; | |
a0d0e21e | 3158 | |
a5f75d66 | 3159 | if (!CvCLONED(cv)) |
748a9306 | 3160 | op_free(CvROOT(cv)); |
79072805 | 3161 | CvROOT(cv) = Nullop; |
8990e307 | 3162 | LEAVE; |
79072805 | 3163 | } |
1d5db326 | 3164 | SvPOK_off((SV*)cv); /* forget prototype */ |
44a8e56a | 3165 | CvFLAGS(cv) = 0; |
8e07c86e AD |
3166 | SvREFCNT_dec(CvGV(cv)); |
3167 | CvGV(cv) = Nullgv; | |
3168 | SvREFCNT_dec(CvOUTSIDE(cv)); | |
3169 | CvOUTSIDE(cv) = Nullcv; | |
3170 | if (CvPADLIST(cv)) { | |
8ebc5c01 | 3171 | /* may be during global destruction */ |
3172 | if (SvREFCNT(CvPADLIST(cv))) { | |
93965878 | 3173 | I32 i = AvFILLp(CvPADLIST(cv)); |
8ebc5c01 | 3174 | while (i >= 0) { |
3175 | SV** svp = av_fetch(CvPADLIST(cv), i--, FALSE); | |
46fc3d4c | 3176 | SV* sv = svp ? *svp : Nullsv; |
3177 | if (!sv) | |
3178 | continue; | |
3280af22 NIS |
3179 | if (sv == (SV*)PL_comppad_name) |
3180 | PL_comppad_name = Nullav; | |
3181 | else if (sv == (SV*)PL_comppad) { | |
3182 | PL_comppad = Nullav; | |
3183 | PL_curpad = Null(SV**); | |
46fc3d4c | 3184 | } |
3185 | SvREFCNT_dec(sv); | |
8ebc5c01 | 3186 | } |
3187 | SvREFCNT_dec((SV*)CvPADLIST(cv)); | |
8e07c86e | 3188 | } |
8e07c86e AD |
3189 | CvPADLIST(cv) = Nullav; |
3190 | } | |
79072805 LW |
3191 | } |
3192 | ||
5f05dabc | 3193 | #ifdef DEBUG_CLOSURES |
76e3520e | 3194 | STATIC void |
5f05dabc | 3195 | cv_dump(cv) |
3196 | CV* cv; | |
3197 | { | |
3198 | CV *outside = CvOUTSIDE(cv); | |
3199 | AV* padlist = CvPADLIST(cv); | |
4fdae800 | 3200 | AV* pad_name; |
3201 | AV* pad; | |
3202 | SV** pname; | |
3203 | SV** ppad; | |
5f05dabc | 3204 | I32 ix; |
3205 | ||
fb73857a | 3206 | PerlIO_printf(Perl_debug_log, "\tCV=0x%lx (%s), OUTSIDE=0x%lx (%s)\n", |
ab50184a CS |
3207 | cv, |
3208 | (CvANON(cv) ? "ANON" | |
6b88bc9c | 3209 | : (cv == PL_main_cv) ? "MAIN" |
07055b4c | 3210 | : CvUNIQUE(outside) ? "UNIQUE" |
44a8e56a | 3211 | : CvGV(cv) ? GvNAME(CvGV(cv)) : "UNDEFINED"), |
ab50184a CS |
3212 | outside, |
3213 | (!outside ? "null" | |
3214 | : CvANON(outside) ? "ANON" | |
6b88bc9c | 3215 | : (outside == PL_main_cv) ? "MAIN" |
07055b4c | 3216 | : CvUNIQUE(outside) ? "UNIQUE" |
44a8e56a | 3217 | : CvGV(outside) ? GvNAME(CvGV(outside)) : "UNDEFINED")); |
5f05dabc | 3218 | |
4fdae800 | 3219 | if (!padlist) |
3220 | return; | |
3221 | ||
3222 | pad_name = (AV*)*av_fetch(padlist, 0, FALSE); | |
3223 | pad = (AV*)*av_fetch(padlist, 1, FALSE); | |
3224 | pname = AvARRAY(pad_name); | |
3225 | ppad = AvARRAY(pad); | |
3226 | ||
93965878 | 3227 | for (ix = 1; ix <= AvFILLp(pad_name); ix++) { |
5f05dabc | 3228 | if (SvPOK(pname[ix])) |
fb73857a | 3229 | PerlIO_printf(Perl_debug_log, "\t%4d. 0x%lx (%s\"%s\" %ld-%ld)\n", |
4fdae800 | 3230 | ix, ppad[ix], |
3231 | SvFAKE(pname[ix]) ? "FAKE " : "", | |
3232 | SvPVX(pname[ix]), | |
ab50184a CS |
3233 | (long)I_32(SvNVX(pname[ix])), |
3234 | (long)SvIVX(pname[ix])); | |
5f05dabc | 3235 | } |
3236 | } | |
3237 | #endif /* DEBUG_CLOSURES */ | |
3238 | ||
76e3520e | 3239 | STATIC CV * |
8ac85365 | 3240 | cv_clone2(CV *proto, CV *outside) |
748a9306 | 3241 | { |
11343788 | 3242 | dTHR; |
748a9306 LW |
3243 | AV* av; |
3244 | I32 ix; | |
3245 | AV* protopadlist = CvPADLIST(proto); | |
3246 | AV* protopad_name = (AV*)*av_fetch(protopadlist, 0, FALSE); | |
3247 | AV* protopad = (AV*)*av_fetch(protopadlist, 1, FALSE); | |
5f05dabc | 3248 | SV** pname = AvARRAY(protopad_name); |
3249 | SV** ppad = AvARRAY(protopad); | |
93965878 NIS |
3250 | I32 fname = AvFILLp(protopad_name); |
3251 | I32 fpad = AvFILLp(protopad); | |
748a9306 LW |
3252 | AV* comppadlist; |
3253 | CV* cv; | |
3254 | ||
07055b4c CS |
3255 | assert(!CvUNIQUE(proto)); |
3256 | ||
748a9306 | 3257 | ENTER; |
3280af22 NIS |
3258 | SAVESPTR(PL_curpad); |
3259 | SAVESPTR(PL_comppad); | |
3260 | SAVESPTR(PL_comppad_name); | |
3261 | SAVESPTR(PL_compcv); | |
748a9306 | 3262 | |
3280af22 | 3263 | cv = PL_compcv = (CV*)NEWSV(1104,0); |
fa83b5b6 | 3264 | sv_upgrade((SV *)cv, SvTYPE(proto)); |
a5f75d66 | 3265 | CvCLONED_on(cv); |
5f05dabc | 3266 | if (CvANON(proto)) |
3267 | CvANON_on(cv); | |
748a9306 | 3268 | |
11343788 | 3269 | #ifdef USE_THREADS |
12ca11f6 | 3270 | New(666, CvMUTEXP(cv), 1, perl_mutex); |
11343788 | 3271 | MUTEX_INIT(CvMUTEXP(cv)); |
11343788 MB |
3272 | CvOWNER(cv) = 0; |
3273 | #endif /* USE_THREADS */ | |
748a9306 | 3274 | CvFILEGV(cv) = CvFILEGV(proto); |
44a8e56a | 3275 | CvGV(cv) = (GV*)SvREFCNT_inc(CvGV(proto)); |
748a9306 LW |
3276 | CvSTASH(cv) = CvSTASH(proto); |
3277 | CvROOT(cv) = CvROOT(proto); | |
3278 | CvSTART(cv) = CvSTART(proto); | |
5f05dabc | 3279 | if (outside) |
3280 | CvOUTSIDE(cv) = (CV*)SvREFCNT_inc(outside); | |
748a9306 | 3281 | |
68dc0745 | 3282 | if (SvPOK(proto)) |
3283 | sv_setpvn((SV*)cv, SvPVX(proto), SvCUR(proto)); | |
3284 | ||
3280af22 | 3285 | PL_comppad_name = newAV(); |
46fc3d4c | 3286 | for (ix = fname; ix >= 0; ix--) |
3280af22 | 3287 | av_store(PL_comppad_name, ix, SvREFCNT_inc(pname[ix])); |
748a9306 | 3288 | |
3280af22 | 3289 | PL_comppad = newAV(); |
748a9306 LW |
3290 | |
3291 | comppadlist = newAV(); | |
3292 | AvREAL_off(comppadlist); | |
3280af22 NIS |
3293 | av_store(comppadlist, 0, (SV*)PL_comppad_name); |
3294 | av_store(comppadlist, 1, (SV*)PL_comppad); | |
748a9306 | 3295 | CvPADLIST(cv) = comppadlist; |
3280af22 NIS |
3296 | av_fill(PL_comppad, AvFILLp(protopad)); |
3297 | PL_curpad = AvARRAY(PL_comppad); | |
748a9306 LW |
3298 | |
3299 | av = newAV(); /* will be @_ */ | |
3300 | av_extend(av, 0); | |
3280af22 | 3301 | av_store(PL_comppad, 0, (SV*)av); |
748a9306 LW |
3302 | AvFLAGS(av) = AVf_REIFY; |
3303 | ||
9607fc9c | 3304 | for (ix = fpad; ix > 0; ix--) { |
3305 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; | |
3280af22 | 3306 | if (namesv && namesv != &PL_sv_undef) { |
aa689395 | 3307 | char *name = SvPVX(namesv); /* XXX */ |
3308 | if (SvFLAGS(namesv) & SVf_FAKE) { /* lexical from outside? */ | |
3309 | I32 off = pad_findlex(name, ix, SvIVX(namesv), | |
5f05dabc | 3310 | CvOUTSIDE(cv), cxstack_ix); |
3311 | if (!off) | |
3280af22 | 3312 | PL_curpad[ix] = SvREFCNT_inc(ppad[ix]); |
5f05dabc | 3313 | else if (off != ix) |
748a9306 LW |
3314 | croak("panic: cv_clone: %s", name); |
3315 | } | |
3316 | else { /* our own lexical */ | |
aa689395 | 3317 | SV* sv; |
5f05dabc | 3318 | if (*name == '&') { |
3319 | /* anon code -- we'll come back for it */ | |
3320 | sv = SvREFCNT_inc(ppad[ix]); | |
3321 | } | |
3322 | else if (*name == '@') | |
3323 | sv = (SV*)newAV(); | |
748a9306 | 3324 | else if (*name == '%') |
5f05dabc | 3325 | sv = (SV*)newHV(); |
748a9306 | 3326 | else |
5f05dabc | 3327 | sv = NEWSV(0,0); |
3328 | if (!SvPADBUSY(sv)) | |
3329 | SvPADMY_on(sv); | |
3280af22 | 3330 | PL_curpad[ix] = sv; |
748a9306 LW |
3331 | } |
3332 | } | |
3333 | else { | |
aa689395 | 3334 | SV* sv = NEWSV(0,0); |
748a9306 | 3335 | SvPADTMP_on(sv); |
3280af22 | 3336 | PL_curpad[ix] = sv; |
748a9306 LW |
3337 | } |
3338 | } | |
3339 | ||
5f05dabc | 3340 | /* Now that vars are all in place, clone nested closures. */ |
3341 | ||
9607fc9c | 3342 | for (ix = fpad; ix > 0; ix--) { |
3343 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; | |
aa689395 | 3344 | if (namesv |
3280af22 | 3345 | && namesv != &PL_sv_undef |
aa689395 | 3346 | && !(SvFLAGS(namesv) & SVf_FAKE) |
3347 | && *SvPVX(namesv) == '&' | |
5f05dabc | 3348 | && CvCLONE(ppad[ix])) |
3349 | { | |
3350 | CV *kid = cv_clone2((CV*)ppad[ix], cv); | |
3351 | SvREFCNT_dec(ppad[ix]); | |
3352 | CvCLONE_on(kid); | |
3353 | SvPADMY_on(kid); | |
3280af22 | 3354 | PL_curpad[ix] = (SV*)kid; |
748a9306 LW |
3355 | } |
3356 | } | |
3357 | ||
5f05dabc | 3358 | #ifdef DEBUG_CLOSURES |
ab50184a CS |
3359 | PerlIO_printf(Perl_debug_log, "Cloned inside:\n"); |
3360 | cv_dump(outside); | |
3361 | PerlIO_printf(Perl_debug_log, " from:\n"); | |
5f05dabc | 3362 | cv_dump(proto); |
ab50184a | 3363 | PerlIO_printf(Perl_debug_log, " to:\n"); |
5f05dabc | 3364 | cv_dump(cv); |
3365 | #endif | |
3366 | ||
748a9306 LW |
3367 | LEAVE; |
3368 | return cv; | |
3369 | } | |
3370 | ||
3371 | CV * | |
8ac85365 | 3372 | cv_clone(CV *proto) |
5f05dabc | 3373 | { |
3374 | return cv_clone2(proto, CvOUTSIDE(proto)); | |
3375 | } | |
3376 | ||
3fe9a6f1 | 3377 | void |
8ac85365 | 3378 | cv_ckproto(CV *cv, GV *gv, char *p) |
3fe9a6f1 | 3379 | { |
3380 | if ((!p != !SvPOK(cv)) || (p && strNE(p, SvPVX(cv)))) { | |
46fc3d4c | 3381 | SV* msg = sv_newmortal(); |
3fe9a6f1 | 3382 | SV* name = Nullsv; |
3383 | ||
3384 | if (gv) | |
46fc3d4c | 3385 | gv_efullname3(name = sv_newmortal(), gv, Nullch); |
3386 | sv_setpv(msg, "Prototype mismatch:"); | |
3387 | if (name) | |
fc36a67e | 3388 | sv_catpvf(msg, " sub %_", name); |
3fe9a6f1 | 3389 | if (SvPOK(cv)) |
46fc3d4c | 3390 | sv_catpvf(msg, " (%s)", SvPVX(cv)); |
3391 | sv_catpv(msg, " vs "); | |
3392 | if (p) | |
3393 | sv_catpvf(msg, "(%s)", p); | |
3394 | else | |
3395 | sv_catpv(msg, "none"); | |
fc36a67e | 3396 | warn("%_", msg); |
3fe9a6f1 | 3397 | } |
3398 | } | |
3399 | ||
760ac839 | 3400 | SV * |
8ac85365 | 3401 | cv_const_sv(CV *cv) |
760ac839 | 3402 | { |
54310121 | 3403 | if (!cv || !SvPOK(cv) || SvCUR(cv)) |
3404 | return Nullsv; | |
fe5e78ed GS |
3405 | return op_const_sv(CvSTART(cv), cv); |
3406 | } | |
760ac839 | 3407 | |
fe5e78ed GS |
3408 | SV * |
3409 | op_const_sv(OP *o, CV *cv) | |
3410 | { | |
3411 | SV *sv = Nullsv; | |
3412 | ||
3413 | if(!o) | |
3414 | return Nullsv; | |
3415 | ||
3416 | if(o->op_type == OP_LINESEQ && cLISTOPo->op_first) | |
3417 | o = cLISTOPo->op_first->op_sibling; | |
3418 | ||
3419 | for (; o; o = o->op_next) { | |
54310121 | 3420 | OPCODE type = o->op_type; |
fe5e78ed GS |
3421 | |
3422 | if(sv && o->op_next == o) | |
3423 | return sv; | |
54310121 | 3424 | if (type == OP_NEXTSTATE || type == OP_NULL || type == OP_PUSHMARK) |
3425 | continue; | |
3426 | if (type == OP_LEAVESUB || type == OP_RETURN) | |
3427 | break; | |
3428 | if (sv) | |
3429 | return Nullsv; | |
3430 | if (type == OP_CONST) | |
5dc0d613 | 3431 | sv = cSVOPo->op_sv; |
fe5e78ed | 3432 | else if (type == OP_PADSV && cv) { |
e858de61 MB |
3433 | AV* padav = (AV*)(AvARRAY(CvPADLIST(cv))[1]); |
3434 | sv = padav ? AvARRAY(padav)[o->op_targ] : Nullsv; | |
5aabfad6 | 3435 | if (!sv || (!SvREADONLY(sv) && SvREFCNT(sv) > 1)) |
54310121 | 3436 | return Nullsv; |
760ac839 | 3437 | } |
54310121 | 3438 | else |
3439 | return Nullsv; | |
760ac839 | 3440 | } |
5aabfad6 | 3441 | if (sv) |
3442 | SvREADONLY_on(sv); | |
760ac839 LW |
3443 | return sv; |
3444 | } | |
3445 | ||
748a9306 | 3446 | CV * |
8ac85365 | 3447 | newSUB(I32 floor, OP *o, OP *proto, OP *block) |
79072805 | 3448 | { |
11343788 | 3449 | dTHR; |
3280af22 | 3450 | char *name = o ? SvPVx(cSVOPo->op_sv, PL_na) : Nullch; |
55d729e4 GS |
3451 | GV *gv = gv_fetchpv(name ? name : "__ANON__", |
3452 | GV_ADDMULTI | (block ? 0 : GV_NOINIT), SVt_PVCV); | |
3280af22 | 3453 | char *ps = proto ? SvPVx(((SVOP*)proto)->op_sv, PL_na) : Nullch; |
a2008d6d | 3454 | register CV *cv=0; |
a0d0e21e | 3455 | I32 ix; |
79072805 | 3456 | |
11343788 | 3457 | if (o) |
5dc0d613 | 3458 | SAVEFREEOP(o); |
3fe9a6f1 | 3459 | if (proto) |
3460 | SAVEFREEOP(proto); | |
3461 | ||
55d729e4 GS |
3462 | if (SvTYPE(gv) != SVt_PVGV) { /* Prototype now, and had |
3463 | maximum a prototype before. */ | |
3464 | if (SvTYPE(gv) > SVt_NULL) { | |
3465 | if (!SvPOK((SV*)gv) && !(SvIOK((SV*)gv) && SvIVX((SV*)gv) == -1)) | |
3466 | warn("Runaway prototype"); | |
3467 | cv_ckproto((CV*)gv, NULL, ps); | |
3468 | } | |
3469 | if (ps) | |
3470 | sv_setpv((SV*)gv, ps); | |
3471 | else | |
3472 | sv_setiv((SV*)gv, -1); | |
3280af22 NIS |
3473 | SvREFCNT_dec(PL_compcv); |
3474 | cv = PL_compcv = NULL; | |
3475 | PL_sub_generation++; | |
55d729e4 GS |
3476 | goto noblock; |
3477 | } | |
3478 | ||
68dc0745 | 3479 | if (!name || GvCVGEN(gv)) |
3480 | cv = Nullcv; | |
3481 | else if (cv = GvCV(gv)) { | |
3fe9a6f1 | 3482 | cv_ckproto(cv, gv, ps); |
68dc0745 | 3483 | /* already defined (or promised)? */ |
3484 | if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
3485 | SV* const_sv; | |
fe5e78ed | 3486 | bool const_changed = TRUE; |
aa689395 | 3487 | if (!block) { |
3488 | /* just a "sub foo;" when &foo is already defined */ | |
3280af22 | 3489 | SAVEFREESV(PL_compcv); |
aa689395 | 3490 | goto done; |
3491 | } | |
7bac28a0 | 3492 | /* ahem, death to those who redefine active sort subs */ |
3280af22 | 3493 | if (PL_curstackinfo->si_type == PERLSI_SORT && PL_sortcop == CvSTART(cv)) |
7bac28a0 | 3494 | croak("Can't redefine active sort subroutine %s", name); |
fe5e78ed GS |
3495 | if(const_sv = cv_const_sv(cv)) |
3496 | const_changed = sv_cmp(const_sv, op_const_sv(block, Nullcv)); | |
3280af22 | 3497 | if ((const_sv && const_changed) || PL_dowarn && !(CvGV(cv) && GvSTASH(CvGV(cv)) |
2f34f9d4 IZ |
3498 | && HvNAME(GvSTASH(CvGV(cv))) |
3499 | && strEQ(HvNAME(GvSTASH(CvGV(cv))), | |
3500 | "autouse"))) { | |
3280af22 NIS |
3501 | line_t oldline = PL_curcop->cop_line; |
3502 | PL_curcop->cop_line = PL_copline; | |
760ac839 | 3503 | warn(const_sv ? "Constant subroutine %s redefined" |
68dc0745 | 3504 | : "Subroutine %s redefined", name); |
3280af22 | 3505 | PL_curcop->cop_line = oldline; |
79072805 | 3506 | } |
8990e307 | 3507 | SvREFCNT_dec(cv); |
68dc0745 | 3508 | cv = Nullcv; |
79072805 LW |
3509 | } |
3510 | } | |
a0d0e21e | 3511 | if (cv) { /* must reuse cv if autoloaded */ |
4633a7c4 | 3512 | cv_undef(cv); |
3280af22 NIS |
3513 | CvFLAGS(cv) = CvFLAGS(PL_compcv); |
3514 | CvOUTSIDE(cv) = CvOUTSIDE(PL_compcv); | |
3515 | CvOUTSIDE(PL_compcv) = 0; | |
3516 | CvPADLIST(cv) = CvPADLIST(PL_compcv); | |
3517 | CvPADLIST(PL_compcv) = 0; | |
3518 | if (SvREFCNT(PL_compcv) > 1) /* XXX Make closures transit through stub. */ | |
3519 | CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc((SV*)cv); | |
3520 | SvREFCNT_dec(PL_compcv); | |
a0d0e21e LW |
3521 | } |
3522 | else { | |
3280af22 | 3523 | cv = PL_compcv; |
44a8e56a | 3524 | if (name) { |
3525 | GvCV(gv) = cv; | |
3526 | GvCVGEN(gv) = 0; | |
3280af22 | 3527 | PL_sub_generation++; |
44a8e56a | 3528 | } |
a0d0e21e | 3529 | } |
44a8e56a | 3530 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
3280af22 NIS |
3531 | CvFILEGV(cv) = PL_curcop->cop_filegv; |
3532 | CvSTASH(cv) = PL_curstash; | |
11343788 MB |
3533 | #ifdef USE_THREADS |
3534 | CvOWNER(cv) = 0; | |
f6aaf501 GS |
3535 | if (!CvMUTEXP(cv)) |
3536 | New(666, CvMUTEXP(cv), 1, perl_mutex); | |
11343788 | 3537 | MUTEX_INIT(CvMUTEXP(cv)); |
11343788 | 3538 | #endif /* USE_THREADS */ |
8990e307 | 3539 | |
3fe9a6f1 | 3540 | if (ps) |
3541 | sv_setpv((SV*)cv, ps); | |
4633a7c4 | 3542 | |
3280af22 | 3543 | if (PL_error_count) { |
c07a80fd | 3544 | op_free(block); |
3545 | block = Nullop; | |
68dc0745 | 3546 | if (name) { |
3547 | char *s = strrchr(name, ':'); | |
3548 | s = s ? s+1 : name; | |
6d4c2119 CS |
3549 | if (strEQ(s, "BEGIN")) { |
3550 | char *not_safe = | |
3551 | "BEGIN not safe after errors--compilation aborted"; | |
3280af22 | 3552 | if (PL_in_eval & 4) |
6d4c2119 CS |
3553 | croak(not_safe); |
3554 | else { | |
3555 | /* force display of errors found but not reported */ | |
38a03e6e | 3556 | sv_catpv(ERRSV, not_safe); |
3280af22 | 3557 | croak("%s", SvPVx(ERRSV, PL_na)); |
6d4c2119 CS |
3558 | } |
3559 | } | |
68dc0745 | 3560 | } |
c07a80fd | 3561 | } |
a0d0e21e | 3562 | if (!block) { |
55d729e4 | 3563 | noblock: |
3280af22 | 3564 | PL_copline = NOLINE; |
a0d0e21e LW |
3565 | LEAVE_SCOPE(floor); |
3566 | return cv; | |
3567 | } | |
3568 | ||
3280af22 NIS |
3569 | if (AvFILLp(PL_comppad_name) < AvFILLp(PL_comppad)) |
3570 | av_store(PL_comppad_name, AvFILLp(PL_comppad), Nullsv); | |
a0d0e21e | 3571 | |
54310121 | 3572 | if (CvCLONE(cv)) { |
3280af22 NIS |
3573 | SV **namep = AvARRAY(PL_comppad_name); |
3574 | for (ix = AvFILLp(PL_comppad); ix > 0; ix--) { | |
54310121 | 3575 | SV *namesv; |
3576 | ||
3280af22 | 3577 | if (SvIMMORTAL(PL_curpad[ix])) |
54310121 | 3578 | continue; |
3579 | /* | |
3580 | * The only things that a clonable function needs in its | |
3581 | * pad are references to outer lexicals and anonymous subs. | |
3582 | * The rest are created anew during cloning. | |
3583 | */ | |
3584 | if (!((namesv = namep[ix]) != Nullsv && | |
3280af22 | 3585 | namesv != &PL_sv_undef && |
54310121 | 3586 | (SvFAKE(namesv) || |
3587 | *SvPVX(namesv) == '&'))) | |
3588 | { | |
3280af22 NIS |
3589 | SvREFCNT_dec(PL_curpad[ix]); |
3590 | PL_curpad[ix] = Nullsv; | |
54310121 | 3591 | } |
3592 | } | |
a0d0e21e | 3593 | } |
54310121 | 3594 | else { |
3595 | AV *av = newAV(); /* Will be @_ */ | |
3596 | av_extend(av, 0); | |
3280af22 | 3597 | av_store(PL_comppad, 0, (SV*)av); |
54310121 | 3598 | AvFLAGS(av) = AVf_REIFY; |
79072805 | 3599 | |
3280af22 NIS |
3600 | for (ix = AvFILLp(PL_comppad); ix > 0; ix--) { |
3601 | if (SvIMMORTAL(PL_curpad[ix])) | |
54310121 | 3602 | continue; |
3280af22 NIS |
3603 | if (!SvPADMY(PL_curpad[ix])) |
3604 | SvPADTMP_on(PL_curpad[ix]); | |
54310121 | 3605 | } |
3606 | } | |
79072805 | 3607 | |
a0d0e21e | 3608 | CvROOT(cv) = newUNOP(OP_LEAVESUB, 0, scalarseq(block)); |
79072805 LW |
3609 | CvSTART(cv) = LINKLIST(CvROOT(cv)); |
3610 | CvROOT(cv)->op_next = 0; | |
3611 | peep(CvSTART(cv)); | |
93a17b20 | 3612 | |
44a8e56a | 3613 | if (name) { |
3614 | char *s; | |
3615 | ||
3280af22 | 3616 | if (PERLDB_SUBLINE && PL_curstash != PL_debstash) { |
46fc3d4c | 3617 | SV *sv = NEWSV(0,0); |
44a8e56a | 3618 | SV *tmpstr = sv_newmortal(); |
549bb64a | 3619 | GV *db_postponed = gv_fetchpv("DB::postponed", GV_ADDMULTI, SVt_PVHV); |
44a8e56a | 3620 | CV *cv; |
3621 | HV *hv; | |
3622 | ||
51790459 | 3623 | sv_setpvf(sv, "%_:%ld-%ld", |
3280af22 NIS |
3624 | GvSV(PL_curcop->cop_filegv), |
3625 | (long)PL_subline, (long)PL_curcop->cop_line); | |
44a8e56a | 3626 | gv_efullname3(tmpstr, gv, Nullch); |
3280af22 | 3627 | hv_store(GvHV(PL_DBsub), SvPVX(tmpstr), SvCUR(tmpstr), sv, 0); |
44a8e56a | 3628 | hv = GvHVn(db_postponed); |
9607fc9c | 3629 | if (HvFILL(hv) > 0 && hv_exists(hv, SvPVX(tmpstr), SvCUR(tmpstr)) |
3630 | && (cv = GvCV(db_postponed))) { | |
44a8e56a | 3631 | dSP; |
924508f0 | 3632 | PUSHMARK(SP); |
44a8e56a | 3633 | XPUSHs(tmpstr); |
3634 | PUTBACK; | |
3635 | perl_call_sv((SV*)cv, G_DISCARD); | |
3636 | } | |
3637 | } | |
79072805 | 3638 | |
44a8e56a | 3639 | if ((s = strrchr(name,':'))) |
28757baa | 3640 | s++; |
3641 | else | |
3642 | s = name; | |
68dc0745 | 3643 | if (strEQ(s, "BEGIN")) { |
3280af22 | 3644 | I32 oldscope = PL_scopestack_ix; |
28757baa | 3645 | ENTER; |
3280af22 NIS |
3646 | SAVESPTR(PL_compiling.cop_filegv); |
3647 | SAVEI16(PL_compiling.cop_line); | |
3648 | save_svref(&PL_rs); | |
3649 | sv_setsv(PL_rs, PL_nrs); | |
28757baa | 3650 | |
3280af22 NIS |
3651 | if (!PL_beginav) |
3652 | PL_beginav = newAV(); | |
28757baa | 3653 | DEBUG_x( dump_sub(gv) ); |
3280af22 | 3654 | av_push(PL_beginav, (SV *)cv); |
28757baa | 3655 | GvCV(gv) = 0; |
3280af22 | 3656 | call_list(oldscope, PL_beginav); |
a6006777 | 3657 | |
3280af22 | 3658 | PL_curcop = &PL_compiling; |
28757baa | 3659 | LEAVE; |
3660 | } | |
3280af22 NIS |
3661 | else if (strEQ(s, "END") && !PL_error_count) { |
3662 | if (!PL_endav) | |
3663 | PL_endav = newAV(); | |
3664 | av_unshift(PL_endav, 1); | |
3665 | av_store(PL_endav, 0, (SV *)cv); | |
28757baa | 3666 | GvCV(gv) = 0; |
3667 | } | |
3280af22 NIS |
3668 | else if (strEQ(s, "INIT") && !PL_error_count) { |
3669 | if (!PL_initav) | |
3670 | PL_initav = newAV(); | |
3671 | av_push(PL_initav, SvREFCNT_inc(cv)); | |
b7aad4fe | 3672 | GvCV(gv) = 0; |
ae77835f | 3673 | } |
79072805 | 3674 | } |
a6006777 | 3675 | |
aa689395 | 3676 | done: |
3280af22 | 3677 | PL_copline = NOLINE; |
8990e307 | 3678 | LEAVE_SCOPE(floor); |
a0d0e21e | 3679 | return cv; |
79072805 LW |
3680 | } |
3681 | ||
5476c433 JD |
3682 | void |
3683 | newCONSTSUB(HV *stash, char *name, SV *sv) | |
3684 | { | |
3685 | dTHR; | |
3280af22 NIS |
3686 | U32 oldhints = PL_hints; |
3687 | HV *old_cop_stash = PL_curcop->cop_stash; | |
3688 | HV *old_curstash = PL_curstash; | |
3689 | line_t oldline = PL_curcop->cop_line; | |
3690 | PL_curcop->cop_line = PL_copline; | |
5476c433 | 3691 | |
3280af22 | 3692 | PL_hints &= ~HINT_BLOCK_SCOPE; |
5476c433 | 3693 | if(stash) |
3280af22 | 3694 | PL_curstash = PL_curcop->cop_stash = stash; |
5476c433 JD |
3695 | |
3696 | newSUB( | |
be24f278 | 3697 | start_subparse(FALSE, 0), |
5476c433 | 3698 | newSVOP(OP_CONST, 0, newSVpv(name,0)), |
6b88bc9c | 3699 | newSVOP(OP_CONST, 0, &PL_sv_no), /* SvPV(&PL_sv_no) == "" -- GMB */ |
5476c433 JD |
3700 | newSTATEOP(0, Nullch, newSVOP(OP_CONST, 0, sv)) |
3701 | ); | |
3702 | ||
3280af22 NIS |
3703 | PL_hints = oldhints; |
3704 | PL_curcop->cop_stash = old_cop_stash; | |
3705 | PL_curstash = old_curstash; | |
3706 | PL_curcop->cop_line = oldline; | |
5476c433 JD |
3707 | } |
3708 | ||
57d3b86d | 3709 | CV * |
e3b8966e | 3710 | newXS(char *name, void (*subaddr) (CV * _CPERLproto), char *filename) |
a0d0e21e | 3711 | { |
11343788 | 3712 | dTHR; |
44a8e56a | 3713 | GV *gv = gv_fetchpv(name ? name : "__ANON__", GV_ADDMULTI, SVt_PVCV); |
79072805 | 3714 | register CV *cv; |
44a8e56a | 3715 | |
3716 | if (cv = (name ? GvCV(gv) : Nullcv)) { | |
3717 | if (GvCVGEN(gv)) { | |
3718 | /* just a cached method */ | |
3719 | SvREFCNT_dec(cv); | |
3720 | cv = 0; | |
3721 | } | |
3722 | else if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
3723 | /* already defined (or promised) */ | |
3280af22 | 3724 | if (PL_dowarn && !(CvGV(cv) && GvSTASH(CvGV(cv)) |
2f34f9d4 IZ |
3725 | && HvNAME(GvSTASH(CvGV(cv))) |
3726 | && strEQ(HvNAME(GvSTASH(CvGV(cv))), "autouse"))) { | |
3280af22 NIS |
3727 | line_t oldline = PL_curcop->cop_line; |
3728 | PL_curcop->cop_line = PL_copline; | |
a0d0e21e | 3729 | warn("Subroutine %s redefined",name); |
3280af22 | 3730 | PL_curcop->cop_line = oldline; |
a0d0e21e LW |
3731 | } |
3732 | SvREFCNT_dec(cv); | |
3733 | cv = 0; | |
79072805 | 3734 | } |
79072805 | 3735 | } |
44a8e56a | 3736 | |
3737 | if (cv) /* must reuse cv if autoloaded */ | |
3738 | cv_undef(cv); | |
a0d0e21e LW |
3739 | else { |
3740 | cv = (CV*)NEWSV(1105,0); | |
3741 | sv_upgrade((SV *)cv, SVt_PVCV); | |
44a8e56a | 3742 | if (name) { |
3743 | GvCV(gv) = cv; | |
3744 | GvCVGEN(gv) = 0; | |
3280af22 | 3745 | PL_sub_generation++; |
44a8e56a | 3746 | } |
a0d0e21e | 3747 | } |
5196be3e | 3748 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
11343788 | 3749 | #ifdef USE_THREADS |
12ca11f6 | 3750 | New(666, CvMUTEXP(cv), 1, perl_mutex); |
11343788 | 3751 | MUTEX_INIT(CvMUTEXP(cv)); |
11343788 MB |
3752 | CvOWNER(cv) = 0; |
3753 | #endif /* USE_THREADS */ | |
79072805 | 3754 | CvFILEGV(cv) = gv_fetchfile(filename); |
a0d0e21e | 3755 | CvXSUB(cv) = subaddr; |
44a8e56a | 3756 | |
28757baa | 3757 | if (name) { |
3758 | char *s = strrchr(name,':'); | |
3759 | if (s) | |
3760 | s++; | |
3761 | else | |
3762 | s = name; | |
3763 | if (strEQ(s, "BEGIN")) { | |
3280af22 NIS |
3764 | if (!PL_beginav) |
3765 | PL_beginav = newAV(); | |
3766 | av_push(PL_beginav, (SV *)cv); | |
44a8e56a | 3767 | GvCV(gv) = 0; |
28757baa | 3768 | } |
3769 | else if (strEQ(s, "END")) { | |
3280af22 NIS |
3770 | if (!PL_endav) |
3771 | PL_endav = newAV(); | |
3772 | av_unshift(PL_endav, 1); | |
3773 | av_store(PL_endav, 0, (SV *)cv); | |
44a8e56a | 3774 | GvCV(gv) = 0; |
28757baa | 3775 | } |
7d07dbc2 | 3776 | else if (strEQ(s, "INIT")) { |
3280af22 NIS |
3777 | if (!PL_initav) |
3778 | PL_initav = newAV(); | |
3779 | av_push(PL_initav, (SV *)cv); | |
ae77835f | 3780 | } |
28757baa | 3781 | } |
8990e307 | 3782 | else |
a5f75d66 | 3783 | CvANON_on(cv); |
44a8e56a | 3784 | |
a0d0e21e | 3785 | return cv; |
79072805 LW |
3786 | } |
3787 | ||
3788 | void | |
8ac85365 | 3789 | newFORM(I32 floor, OP *o, OP *block) |
79072805 | 3790 | { |
11343788 | 3791 | dTHR; |
79072805 LW |
3792 | register CV *cv; |
3793 | char *name; | |
3794 | GV *gv; | |
a0d0e21e | 3795 | I32 ix; |
79072805 | 3796 | |
11343788 | 3797 | if (o) |
3280af22 | 3798 | name = SvPVx(cSVOPo->op_sv, PL_na); |
79072805 LW |
3799 | else |
3800 | name = "STDOUT"; | |
85e6fe83 | 3801 | gv = gv_fetchpv(name,TRUE, SVt_PVFM); |
a5f75d66 | 3802 | GvMULTI_on(gv); |
79072805 | 3803 | if (cv = GvFORM(gv)) { |
3280af22 NIS |
3804 | if (PL_dowarn) { |
3805 | line_t oldline = PL_curcop->cop_line; | |
79072805 | 3806 | |
3280af22 | 3807 | PL_curcop->cop_line = PL_copline; |
79072805 | 3808 | warn("Format %s redefined",name); |
3280af22 | 3809 | PL_curcop->cop_line = oldline; |
79072805 | 3810 | } |
8990e307 | 3811 | SvREFCNT_dec(cv); |
79072805 | 3812 | } |
3280af22 | 3813 | cv = PL_compcv; |
79072805 | 3814 | GvFORM(gv) = cv; |
44a8e56a | 3815 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
3280af22 | 3816 | CvFILEGV(cv) = PL_curcop->cop_filegv; |
79072805 | 3817 | |
3280af22 NIS |
3818 | for (ix = AvFILLp(PL_comppad); ix > 0; ix--) { |
3819 | if (!SvPADMY(PL_curpad[ix]) && !SvIMMORTAL(PL_curpad[ix])) | |
3820 | SvPADTMP_on(PL_curpad[ix]); | |
a0d0e21e LW |
3821 | } |
3822 | ||
79072805 LW |
3823 | CvROOT(cv) = newUNOP(OP_LEAVEWRITE, 0, scalarseq(block)); |
3824 | CvSTART(cv) = LINKLIST(CvROOT(cv)); | |
3825 | CvROOT(cv)->op_next = 0; | |
3826 | peep(CvSTART(cv)); | |
11343788 | 3827 | op_free(o); |
3280af22 | 3828 | PL_copline = NOLINE; |
8990e307 | 3829 | LEAVE_SCOPE(floor); |
79072805 LW |
3830 | } |
3831 | ||
3832 | OP * | |
8ac85365 | 3833 | newANONLIST(OP *o) |
79072805 | 3834 | { |
93a17b20 | 3835 | return newUNOP(OP_REFGEN, 0, |
11343788 | 3836 | mod(list(convert(OP_ANONLIST, 0, o)), OP_REFGEN)); |
79072805 LW |
3837 | } |
3838 | ||
3839 | OP * | |
8ac85365 | 3840 | newANONHASH(OP *o) |
79072805 | 3841 | { |
93a17b20 | 3842 | return newUNOP(OP_REFGEN, 0, |
11343788 | 3843 | mod(list(convert(OP_ANONHASH, 0, o)), OP_REFGEN)); |
a0d0e21e LW |
3844 | } |
3845 | ||
3846 | OP * | |
8ac85365 | 3847 | newANONSUB(I32 floor, OP *proto, OP *block) |
a0d0e21e LW |
3848 | { |
3849 | return newUNOP(OP_REFGEN, 0, | |
4633a7c4 | 3850 | newSVOP(OP_ANONCODE, 0, (SV*)newSUB(floor, 0, proto, block))); |
79072805 LW |
3851 | } |
3852 | ||
3853 | OP * | |
8ac85365 | 3854 | oopsAV(OP *o) |
79072805 | 3855 | { |
ed6116ce LW |
3856 | switch (o->op_type) { |
3857 | case OP_PADSV: | |
3858 | o->op_type = OP_PADAV; | |
3859 | o->op_ppaddr = ppaddr[OP_PADAV]; | |
3860 | return ref(newUNOP(OP_RV2AV, 0, scalar(o)), OP_RV2AV); | |
3861 | ||
3862 | case OP_RV2SV: | |
79072805 LW |
3863 | o->op_type = OP_RV2AV; |
3864 | o->op_ppaddr = ppaddr[OP_RV2AV]; | |
3865 | ref(o, OP_RV2AV); | |
ed6116ce LW |
3866 | break; |
3867 | ||
3868 | default: | |
79072805 | 3869 | warn("oops: oopsAV"); |
ed6116ce LW |
3870 | break; |
3871 | } | |
79072805 LW |
3872 | return o; |
3873 | } | |
3874 | ||
3875 | OP * | |
8ac85365 | 3876 | oopsHV(OP *o) |
79072805 | 3877 | { |
ed6116ce LW |
3878 | switch (o->op_type) { |
3879 | case OP_PADSV: | |
3880 | case OP_PADAV: | |
3881 | o->op_type = OP_PADHV; | |
3882 | o->op_ppaddr = ppaddr[OP_PADHV]; | |
3883 | return ref(newUNOP(OP_RV2HV, 0, scalar(o)), OP_RV2HV); | |
3884 | ||
3885 | case OP_RV2SV: | |
3886 | case OP_RV2AV: | |
79072805 LW |
3887 | o->op_type = OP_RV2HV; |
3888 | o->op_ppaddr = ppaddr[OP_RV2HV]; | |
3889 | ref(o, OP_RV2HV); | |
ed6116ce LW |
3890 | break; |
3891 | ||
3892 | default: | |
79072805 | 3893 | warn("oops: oopsHV"); |
ed6116ce LW |
3894 | break; |
3895 | } | |
79072805 LW |
3896 | return o; |
3897 | } | |
3898 | ||
3899 | OP * | |
8ac85365 | 3900 | newAVREF(OP *o) |
79072805 | 3901 | { |
ed6116ce LW |
3902 | if (o->op_type == OP_PADANY) { |
3903 | o->op_type = OP_PADAV; | |
3904 | o->op_ppaddr = ppaddr[OP_PADAV]; | |
93a17b20 | 3905 | return o; |
ed6116ce | 3906 | } |
79072805 LW |
3907 | return newUNOP(OP_RV2AV, 0, scalar(o)); |
3908 | } | |
3909 | ||
3910 | OP * | |
8ac85365 | 3911 | newGVREF(I32 type, OP *o) |
79072805 | 3912 | { |
a0d0e21e LW |
3913 | if (type == OP_MAPSTART) |
3914 | return newUNOP(OP_NULL, 0, o); | |
748a9306 | 3915 | return ref(newUNOP(OP_RV2GV, OPf_REF, o), type); |
79072805 LW |
3916 | } |
3917 | ||
3918 | OP * | |
8ac85365 | 3919 | newHVREF(OP *o) |
79072805 | 3920 | { |
ed6116ce LW |
3921 | if (o->op_type == OP_PADANY) { |
3922 | o->op_type = OP_PADHV; | |
3923 | o->op_ppaddr = ppaddr[OP_PADHV]; | |
93a17b20 | 3924 | return o; |
ed6116ce | 3925 | } |
79072805 LW |
3926 | return newUNOP(OP_RV2HV, 0, scalar(o)); |
3927 | } | |
3928 | ||
3929 | OP * | |
8ac85365 | 3930 | oopsCV(OP *o) |
79072805 | 3931 | { |
463ee0b2 | 3932 | croak("NOT IMPL LINE %d",__LINE__); |
79072805 LW |
3933 | /* STUB */ |
3934 | return o; | |
3935 | } | |
3936 | ||
3937 | OP * | |
8ac85365 | 3938 | newCVREF(I32 flags, OP *o) |
79072805 | 3939 | { |
c07a80fd | 3940 | return newUNOP(OP_RV2CV, flags, scalar(o)); |
79072805 LW |
3941 | } |
3942 | ||
3943 | OP * | |
8ac85365 | 3944 | newSVREF(OP *o) |
79072805 | 3945 | { |
ed6116ce LW |
3946 | if (o->op_type == OP_PADANY) { |
3947 | o->op_type = OP_PADSV; | |
3948 | o->op_ppaddr = ppaddr[OP_PADSV]; | |
93a17b20 | 3949 | return o; |
ed6116ce | 3950 | } |
224a4551 MB |
3951 | else if (o->op_type == OP_THREADSV && !(o->op_flags & OPpDONE_SVREF)) { |
3952 | o->op_flags |= OPpDONE_SVREF; | |
a863c7d1 | 3953 | return o; |
224a4551 | 3954 | } |
79072805 LW |
3955 | return newUNOP(OP_RV2SV, 0, scalar(o)); |
3956 | } | |
3957 | ||
3958 | /* Check routines. */ | |
3959 | ||
3960 | OP * | |
8ac85365 | 3961 | ck_anoncode(OP *o) |
5f05dabc | 3962 | { |
178c6305 CS |
3963 | PADOFFSET ix; |
3964 | SV* name; | |
3965 | ||
3966 | name = NEWSV(1106,0); | |
3967 | sv_upgrade(name, SVt_PVNV); | |
3968 | sv_setpvn(name, "&", 1); | |
3969 | SvIVX(name) = -1; | |
3970 | SvNVX(name) = 1; | |
5dc0d613 | 3971 | ix = pad_alloc(o->op_type, SVs_PADMY); |
3280af22 NIS |
3972 | av_store(PL_comppad_name, ix, name); |
3973 | av_store(PL_comppad, ix, cSVOPo->op_sv); | |
5dc0d613 MB |
3974 | SvPADMY_on(cSVOPo->op_sv); |
3975 | cSVOPo->op_sv = Nullsv; | |
3976 | cSVOPo->op_targ = ix; | |
3977 | return o; | |
5f05dabc | 3978 | } |
3979 | ||
3980 | OP * | |
8ac85365 | 3981 | ck_bitop(OP *o) |
55497cff | 3982 | { |
3280af22 | 3983 | o->op_private = PL_hints; |
5dc0d613 | 3984 | return o; |
55497cff | 3985 | } |
3986 | ||
3987 | OP * | |
8ac85365 | 3988 | ck_concat(OP *o) |
79072805 | 3989 | { |
11343788 MB |
3990 | if (cUNOPo->op_first->op_type == OP_CONCAT) |
3991 | o->op_flags |= OPf_STACKED; | |
3992 | return o; | |
79072805 LW |
3993 | } |
3994 | ||
3995 | OP * | |
8ac85365 | 3996 | ck_spair(OP *o) |
79072805 | 3997 | { |
11343788 | 3998 | if (o->op_flags & OPf_KIDS) { |
79072805 | 3999 | OP* newop; |
a0d0e21e | 4000 | OP* kid; |
5dc0d613 MB |
4001 | OPCODE type = o->op_type; |
4002 | o = modkids(ck_fun(o), type); | |
11343788 | 4003 | kid = cUNOPo->op_first; |
a0d0e21e LW |
4004 | newop = kUNOP->op_first->op_sibling; |
4005 | if (newop && | |
4006 | (newop->op_sibling || | |
4007 | !(opargs[newop->op_type] & OA_RETSCALAR) || | |
4008 | newop->op_type == OP_PADAV || newop->op_type == OP_PADHV || | |
4009 | newop->op_type == OP_RV2AV || newop->op_type == OP_RV2HV)) { | |
aeea060c | 4010 | |
11343788 | 4011 | return o; |
a0d0e21e LW |
4012 | } |
4013 | op_free(kUNOP->op_first); | |
4014 | kUNOP->op_first = newop; | |
4015 | } | |
11343788 MB |
4016 | o->op_ppaddr = ppaddr[++o->op_type]; |
4017 | return ck_fun(o); | |
a0d0e21e LW |
4018 | } |
4019 | ||
4020 | OP * | |
8ac85365 | 4021 | ck_delete(OP *o) |
a0d0e21e | 4022 | { |
11343788 | 4023 | o = ck_fun(o); |
5dc0d613 | 4024 | o->op_private = 0; |
11343788 MB |
4025 | if (o->op_flags & OPf_KIDS) { |
4026 | OP *kid = cUNOPo->op_first; | |
5f05dabc | 4027 | if (kid->op_type == OP_HSLICE) |
5dc0d613 | 4028 | o->op_private |= OPpSLICE; |
5f05dabc | 4029 | else if (kid->op_type != OP_HELEM) |
4030 | croak("%s argument is not a HASH element or slice", | |
5dc0d613 | 4031 | op_desc[o->op_type]); |
a0d0e21e | 4032 | null(kid); |
79072805 | 4033 | } |
11343788 | 4034 | return o; |
79072805 LW |
4035 | } |
4036 | ||
4037 | OP * | |
8ac85365 | 4038 | ck_eof(OP *o) |
79072805 | 4039 | { |
11343788 | 4040 | I32 type = o->op_type; |
79072805 | 4041 | |
11343788 MB |
4042 | if (o->op_flags & OPf_KIDS) { |
4043 | if (cLISTOPo->op_first->op_type == OP_STUB) { | |
4044 | op_free(o); | |
4045 | o = newUNOP(type, OPf_SPECIAL, | |
d58bf5aa | 4046 | newGVOP(OP_GV, 0, gv_fetchpv("main::ARGV", TRUE, SVt_PVAV))); |
8990e307 | 4047 | } |
11343788 | 4048 | return ck_fun(o); |
79072805 | 4049 | } |
11343788 | 4050 | return o; |
79072805 LW |
4051 | } |
4052 | ||
4053 | OP * | |
8ac85365 | 4054 | ck_eval(OP *o) |
79072805 | 4055 | { |
3280af22 | 4056 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 MB |
4057 | if (o->op_flags & OPf_KIDS) { |
4058 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 | 4059 | |
93a17b20 | 4060 | if (!kid) { |
11343788 MB |
4061 | o->op_flags &= ~OPf_KIDS; |
4062 | null(o); | |
79072805 LW |
4063 | } |
4064 | else if (kid->op_type == OP_LINESEQ) { | |
4065 | LOGOP *enter; | |
4066 | ||
11343788 MB |
4067 | kid->op_next = o->op_next; |
4068 | cUNOPo->op_first = 0; | |
4069 | op_free(o); | |
79072805 LW |
4070 | |
4071 | Newz(1101, enter, 1, LOGOP); | |
4072 | enter->op_type = OP_ENTERTRY; | |
4073 | enter->op_ppaddr = ppaddr[OP_ENTERTRY]; | |
4074 | enter->op_private = 0; | |
4075 | ||
4076 | /* establish postfix order */ | |
4077 | enter->op_next = (OP*)enter; | |
4078 | ||
11343788 MB |
4079 | o = prepend_elem(OP_LINESEQ, (OP*)enter, (OP*)kid); |
4080 | o->op_type = OP_LEAVETRY; | |
4081 | o->op_ppaddr = ppaddr[OP_LEAVETRY]; | |
4082 | enter->op_other = o; | |
4083 | return o; | |
79072805 | 4084 | } |
c7cc6f1c | 4085 | else |
473986ff | 4086 | scalar((OP*)kid); |
79072805 LW |
4087 | } |
4088 | else { | |
11343788 | 4089 | op_free(o); |
54b9620d | 4090 | o = newUNOP(OP_ENTEREVAL, 0, newDEFSVOP()); |
79072805 | 4091 | } |
3280af22 | 4092 | o->op_targ = (PADOFFSET)PL_hints; |
11343788 | 4093 | return o; |
79072805 LW |
4094 | } |
4095 | ||
4096 | OP * | |
8ac85365 | 4097 | ck_exec(OP *o) |
79072805 LW |
4098 | { |
4099 | OP *kid; | |
11343788 MB |
4100 | if (o->op_flags & OPf_STACKED) { |
4101 | o = ck_fun(o); | |
4102 | kid = cUNOPo->op_first->op_sibling; | |
8990e307 LW |
4103 | if (kid->op_type == OP_RV2GV) |
4104 | null(kid); | |
79072805 | 4105 | } |
463ee0b2 | 4106 | else |
11343788 MB |
4107 | o = listkids(o); |
4108 | return o; | |
79072805 LW |
4109 | } |
4110 | ||
4111 | OP * | |
8ac85365 | 4112 | ck_exists(OP *o) |
5f05dabc | 4113 | { |
5196be3e MB |
4114 | o = ck_fun(o); |
4115 | if (o->op_flags & OPf_KIDS) { | |
4116 | OP *kid = cUNOPo->op_first; | |
5f05dabc | 4117 | if (kid->op_type != OP_HELEM) |
5196be3e | 4118 | croak("%s argument is not a HASH element", op_desc[o->op_type]); |
5f05dabc | 4119 | null(kid); |
4120 | } | |
5196be3e | 4121 | return o; |
5f05dabc | 4122 | } |
4123 | ||
4124 | OP * | |
8ac85365 | 4125 | ck_gvconst(register OP *o) |
79072805 LW |
4126 | { |
4127 | o = fold_constants(o); | |
4128 | if (o->op_type == OP_CONST) | |
4129 | o->op_type = OP_GV; | |
4130 | return o; | |
4131 | } | |
4132 | ||
4133 | OP * | |
8ac85365 | 4134 | ck_rvconst(register OP *o) |
79072805 | 4135 | { |
11343788 MB |
4136 | dTHR; |
4137 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
85e6fe83 | 4138 | |
3280af22 | 4139 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
79072805 | 4140 | if (kid->op_type == OP_CONST) { |
44a8e56a | 4141 | char *name; |
4142 | int iscv; | |
4143 | GV *gv; | |
4144 | ||
3280af22 NIS |
4145 | name = SvPV(kid->op_sv, PL_na); |
4146 | if ((PL_hints & HINT_STRICT_REFS) && (kid->op_private & OPpCONST_BARE)) { | |
44a8e56a | 4147 | char *badthing = Nullch; |
5dc0d613 | 4148 | switch (o->op_type) { |
44a8e56a | 4149 | case OP_RV2SV: |
4150 | badthing = "a SCALAR"; | |
4151 | break; | |
4152 | case OP_RV2AV: | |
4153 | badthing = "an ARRAY"; | |
4154 | break; | |
4155 | case OP_RV2HV: | |
4156 | badthing = "a HASH"; | |
4157 | break; | |
4158 | } | |
4159 | if (badthing) | |
4160 | croak( | |
4161 | "Can't use bareword (\"%s\") as %s ref while \"strict refs\" in use", | |
4162 | name, badthing); | |
4163 | } | |
93233ece CS |
4164 | /* |
4165 | * This is a little tricky. We only want to add the symbol if we | |
4166 | * didn't add it in the lexer. Otherwise we get duplicate strict | |
4167 | * warnings. But if we didn't add it in the lexer, we must at | |
4168 | * least pretend like we wanted to add it even if it existed before, | |
4169 | * or we get possible typo warnings. OPpCONST_ENTERED says | |
4170 | * whether the lexer already added THIS instance of this symbol. | |
4171 | */ | |
5196be3e | 4172 | iscv = (o->op_type == OP_RV2CV) * 2; |
93233ece | 4173 | do { |
44a8e56a | 4174 | gv = gv_fetchpv(name, |
748a9306 | 4175 | iscv | !(kid->op_private & OPpCONST_ENTERED), |
a0d0e21e LW |
4176 | iscv |
4177 | ? SVt_PVCV | |
11343788 | 4178 | : o->op_type == OP_RV2SV |
a0d0e21e | 4179 | ? SVt_PV |
11343788 | 4180 | : o->op_type == OP_RV2AV |
a0d0e21e | 4181 | ? SVt_PVAV |
11343788 | 4182 | : o->op_type == OP_RV2HV |
a0d0e21e LW |
4183 | ? SVt_PVHV |
4184 | : SVt_PVGV); | |
93233ece CS |
4185 | } while (!gv && !(kid->op_private & OPpCONST_ENTERED) && !iscv++); |
4186 | if (gv) { | |
4187 | kid->op_type = OP_GV; | |
4188 | SvREFCNT_dec(kid->op_sv); | |
4189 | kid->op_sv = SvREFCNT_inc(gv); | |
a0d0e21e | 4190 | } |
79072805 | 4191 | } |
11343788 | 4192 | return o; |
79072805 LW |
4193 | } |
4194 | ||
4195 | OP * | |
8ac85365 | 4196 | ck_ftst(OP *o) |
79072805 | 4197 | { |
11343788 MB |
4198 | dTHR; |
4199 | I32 type = o->op_type; | |
79072805 | 4200 | |
11343788 MB |
4201 | if (o->op_flags & OPf_REF) |
4202 | return o; | |
79072805 | 4203 | |
108ed793 | 4204 | if (o->op_flags & OPf_KIDS && cUNOPo->op_first->op_type != OP_STUB) { |
11343788 | 4205 | SVOP *kid = (SVOP*)cUNOPo->op_first; |
79072805 LW |
4206 | |
4207 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
a0d0e21e | 4208 | OP *newop = newGVOP(type, OPf_REF, |
3280af22 | 4209 | gv_fetchpv(SvPVx(kid->op_sv, PL_na), TRUE, SVt_PVIO)); |
11343788 | 4210 | op_free(o); |
79072805 LW |
4211 | return newop; |
4212 | } | |
4213 | } | |
4214 | else { | |
11343788 | 4215 | op_free(o); |
79072805 | 4216 | if (type == OP_FTTTY) |
fb73857a | 4217 | return newGVOP(type, OPf_REF, gv_fetchpv("main::STDIN", TRUE, |
85e6fe83 | 4218 | SVt_PVIO)); |
79072805 | 4219 | else |
54b9620d | 4220 | return newUNOP(type, 0, newDEFSVOP()); |
79072805 | 4221 | } |
11343788 | 4222 | return o; |
79072805 LW |
4223 | } |
4224 | ||
4225 | OP * | |
8ac85365 | 4226 | ck_fun(OP *o) |
79072805 | 4227 | { |
11343788 | 4228 | dTHR; |
79072805 LW |
4229 | register OP *kid; |
4230 | OP **tokid; | |
4231 | OP *sibl; | |
4232 | I32 numargs = 0; | |
11343788 | 4233 | int type = o->op_type; |
a0d0e21e | 4234 | register I32 oa = opargs[type] >> OASHIFT; |
aeea060c | 4235 | |
11343788 | 4236 | if (o->op_flags & OPf_STACKED) { |
79072805 LW |
4237 | if ((oa & OA_OPTIONAL) && (oa >> 4) && !((oa >> 4) & OA_OPTIONAL)) |
4238 | oa &= ~OA_OPTIONAL; | |
4239 | else | |
11343788 | 4240 | return no_fh_allowed(o); |
79072805 LW |
4241 | } |
4242 | ||
11343788 MB |
4243 | if (o->op_flags & OPf_KIDS) { |
4244 | tokid = &cLISTOPo->op_first; | |
4245 | kid = cLISTOPo->op_first; | |
8990e307 LW |
4246 | if (kid->op_type == OP_PUSHMARK || |
4247 | kid->op_type == OP_NULL && kid->op_targ == OP_PUSHMARK) | |
4248 | { | |
79072805 LW |
4249 | tokid = &kid->op_sibling; |
4250 | kid = kid->op_sibling; | |
4251 | } | |
a0d0e21e | 4252 | if (!kid && opargs[type] & OA_DEFGV) |
54b9620d | 4253 | *tokid = kid = newDEFSVOP(); |
79072805 LW |
4254 | |
4255 | while (oa && kid) { | |
4256 | numargs++; | |
4257 | sibl = kid->op_sibling; | |
4258 | switch (oa & 7) { | |
4259 | case OA_SCALAR: | |
4260 | scalar(kid); | |
4261 | break; | |
4262 | case OA_LIST: | |
4263 | if (oa < 16) { | |
4264 | kid = 0; | |
4265 | continue; | |
4266 | } | |
4267 | else | |
4268 | list(kid); | |
4269 | break; | |
4270 | case OA_AVREF: | |
4271 | if (kid->op_type == OP_CONST && | |
4272 | (kid->op_private & OPpCONST_BARE)) { | |
3280af22 | 4273 | char *name = SvPVx(((SVOP*)kid)->op_sv, PL_na); |
79072805 | 4274 | OP *newop = newAVREF(newGVOP(OP_GV, 0, |
85e6fe83 | 4275 | gv_fetchpv(name, TRUE, SVt_PVAV) )); |
3280af22 | 4276 | if (PL_dowarn) |
ff0cee69 | 4277 | warn("Array @%s missing the @ in argument %ld of %s()", |
4278 | name, (long)numargs, op_desc[type]); | |
79072805 LW |
4279 | op_free(kid); |
4280 | kid = newop; | |
4281 | kid->op_sibling = sibl; | |
4282 | *tokid = kid; | |
4283 | } | |
8990e307 | 4284 | else if (kid->op_type != OP_RV2AV && kid->op_type != OP_PADAV) |
11343788 | 4285 | bad_type(numargs, "array", op_desc[o->op_type], kid); |
a0d0e21e | 4286 | mod(kid, type); |
79072805 LW |
4287 | break; |
4288 | case OA_HVREF: | |
4289 | if (kid->op_type == OP_CONST && | |
4290 | (kid->op_private & OPpCONST_BARE)) { | |
3280af22 | 4291 | char *name = SvPVx(((SVOP*)kid)->op_sv, PL_na); |
79072805 | 4292 | OP *newop = newHVREF(newGVOP(OP_GV, 0, |
85e6fe83 | 4293 | gv_fetchpv(name, TRUE, SVt_PVHV) )); |
3280af22 | 4294 | if (PL_dowarn) |
ff0cee69 | 4295 | warn("Hash %%%s missing the %% in argument %ld of %s()", |
4296 | name, (long)numargs, op_desc[type]); | |
79072805 LW |
4297 | op_free(kid); |
4298 | kid = newop; | |
4299 | kid->op_sibling = sibl; | |
4300 | *tokid = kid; | |
4301 | } | |
8990e307 | 4302 | else if (kid->op_type != OP_RV2HV && kid->op_type != OP_PADHV) |
11343788 | 4303 | bad_type(numargs, "hash", op_desc[o->op_type], kid); |
a0d0e21e | 4304 | mod(kid, type); |
79072805 LW |
4305 | break; |
4306 | case OA_CVREF: | |
4307 | { | |
a0d0e21e | 4308 | OP *newop = newUNOP(OP_NULL, 0, kid); |
79072805 LW |
4309 | kid->op_sibling = 0; |
4310 | linklist(kid); | |
4311 | newop->op_next = newop; | |
4312 | kid = newop; | |
4313 | kid->op_sibling = sibl; | |
4314 | *tokid = kid; | |
4315 | } | |
4316 | break; | |
4317 | case OA_FILEREF: | |
c340be78 | 4318 | if (kid->op_type != OP_GV && kid->op_type != OP_RV2GV) { |
79072805 LW |
4319 | if (kid->op_type == OP_CONST && |
4320 | (kid->op_private & OPpCONST_BARE)) { | |
4321 | OP *newop = newGVOP(OP_GV, 0, | |
3280af22 | 4322 | gv_fetchpv(SvPVx(((SVOP*)kid)->op_sv, PL_na), TRUE, |
85e6fe83 | 4323 | SVt_PVIO) ); |
79072805 LW |
4324 | op_free(kid); |
4325 | kid = newop; | |
4326 | } | |
4327 | else { | |
4328 | kid->op_sibling = 0; | |
4329 | kid = newUNOP(OP_RV2GV, 0, scalar(kid)); | |
4330 | } | |
4331 | kid->op_sibling = sibl; | |
4332 | *tokid = kid; | |
4333 | } | |
4334 | scalar(kid); | |
4335 | break; | |
4336 | case OA_SCALARREF: | |
a0d0e21e | 4337 | mod(scalar(kid), type); |
79072805 LW |
4338 | break; |
4339 | } | |
4340 | oa >>= 4; | |
4341 | tokid = &kid->op_sibling; | |
4342 | kid = kid->op_sibling; | |
4343 | } | |
11343788 | 4344 | o->op_private |= numargs; |
79072805 | 4345 | if (kid) |
11343788 MB |
4346 | return too_many_arguments(o,op_desc[o->op_type]); |
4347 | listkids(o); | |
79072805 | 4348 | } |
a0d0e21e | 4349 | else if (opargs[type] & OA_DEFGV) { |
11343788 | 4350 | op_free(o); |
54b9620d | 4351 | return newUNOP(type, 0, newDEFSVOP()); |
a0d0e21e LW |
4352 | } |
4353 | ||
79072805 LW |
4354 | if (oa) { |
4355 | while (oa & OA_OPTIONAL) | |
4356 | oa >>= 4; | |
4357 | if (oa && oa != OA_LIST) | |
11343788 | 4358 | return too_few_arguments(o,op_desc[o->op_type]); |
79072805 | 4359 | } |
11343788 | 4360 | return o; |
79072805 LW |
4361 | } |
4362 | ||
4363 | OP * | |
8ac85365 | 4364 | ck_glob(OP *o) |
79072805 | 4365 | { |
fb73857a | 4366 | GV *gv; |
4367 | ||
1f2bfc8a | 4368 | if ((o->op_flags & OPf_KIDS) && !cLISTOPo->op_first->op_sibling) |
54b9620d | 4369 | append_elem(OP_GLOB, o, newDEFSVOP()); |
fb73857a | 4370 | |
4371 | if (!((gv = gv_fetchpv("glob", FALSE, SVt_PVCV)) && GvIMPORTED_CV(gv))) | |
4372 | gv = gv_fetchpv("CORE::GLOBAL::glob", FALSE, SVt_PVCV); | |
b1cb66bf | 4373 | |
4374 | if (gv && GvIMPORTED_CV(gv)) { | |
46fc3d4c | 4375 | static int glob_index; |
4376 | ||
5196be3e | 4377 | append_elem(OP_GLOB, o, |
46fc3d4c | 4378 | newSVOP(OP_CONST, 0, newSViv(glob_index++))); |
1f2bfc8a MB |
4379 | o->op_type = OP_LIST; |
4380 | o->op_ppaddr = ppaddr[OP_LIST]; | |
4381 | cLISTOPo->op_first->op_type = OP_PUSHMARK; | |
4382 | cLISTOPo->op_first->op_ppaddr = ppaddr[OP_PUSHMARK]; | |
4383 | o = newUNOP(OP_ENTERSUB, OPf_STACKED, | |
aeea060c | 4384 | append_elem(OP_LIST, o, |
1f2bfc8a MB |
4385 | scalar(newUNOP(OP_RV2CV, 0, |
4386 | newGVOP(OP_GV, 0, gv))))); | |
d58bf5aa MB |
4387 | o = newUNOP(OP_NULL, 0, ck_subr(o)); |
4388 | o->op_targ = OP_GLOB; /* hint at what it used to be */ | |
4389 | return o; | |
b1cb66bf | 4390 | } |
4391 | gv = newGVgen("main"); | |
a0d0e21e | 4392 | gv_IOadd(gv); |
11343788 MB |
4393 | append_elem(OP_GLOB, o, newGVOP(OP_GV, 0, gv)); |
4394 | scalarkids(o); | |
4395 | return ck_fun(o); | |
79072805 LW |
4396 | } |
4397 | ||
4398 | OP * | |
8ac85365 | 4399 | ck_grep(OP *o) |
79072805 LW |
4400 | { |
4401 | LOGOP *gwop; | |
4402 | OP *kid; | |
11343788 | 4403 | OPCODE type = o->op_type == OP_GREPSTART ? OP_GREPWHILE : OP_MAPWHILE; |
79072805 | 4404 | |
11343788 | 4405 | o->op_ppaddr = ppaddr[OP_GREPSTART]; |
a0d0e21e | 4406 | Newz(1101, gwop, 1, LOGOP); |
aeea060c | 4407 | |
11343788 | 4408 | if (o->op_flags & OPf_STACKED) { |
a0d0e21e | 4409 | OP* k; |
11343788 MB |
4410 | o = ck_sort(o); |
4411 | kid = cLISTOPo->op_first->op_sibling; | |
4412 | for (k = cLISTOPo->op_first->op_sibling->op_next; k; k = k->op_next) { | |
a0d0e21e LW |
4413 | kid = k; |
4414 | } | |
4415 | kid->op_next = (OP*)gwop; | |
11343788 | 4416 | o->op_flags &= ~OPf_STACKED; |
93a17b20 | 4417 | } |
11343788 | 4418 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e LW |
4419 | if (type == OP_MAPWHILE) |
4420 | list(kid); | |
4421 | else | |
4422 | scalar(kid); | |
11343788 | 4423 | o = ck_fun(o); |
3280af22 | 4424 | if (PL_error_count) |
11343788 | 4425 | return o; |
aeea060c | 4426 | kid = cLISTOPo->op_first->op_sibling; |
79072805 | 4427 | if (kid->op_type != OP_NULL) |
463ee0b2 | 4428 | croak("panic: ck_grep"); |
79072805 LW |
4429 | kid = kUNOP->op_first; |
4430 | ||
a0d0e21e LW |
4431 | gwop->op_type = type; |
4432 | gwop->op_ppaddr = ppaddr[type]; | |
11343788 | 4433 | gwop->op_first = listkids(o); |
79072805 LW |
4434 | gwop->op_flags |= OPf_KIDS; |
4435 | gwop->op_private = 1; | |
4436 | gwop->op_other = LINKLIST(kid); | |
a0d0e21e | 4437 | gwop->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 LW |
4438 | kid->op_next = (OP*)gwop; |
4439 | ||
11343788 | 4440 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e | 4441 | if (!kid || !kid->op_sibling) |
11343788 | 4442 | return too_few_arguments(o,op_desc[o->op_type]); |
a0d0e21e LW |
4443 | for (kid = kid->op_sibling; kid; kid = kid->op_sibling) |
4444 | mod(kid, OP_GREPSTART); | |
4445 | ||
79072805 LW |
4446 | return (OP*)gwop; |
4447 | } | |
4448 | ||
4449 | OP * | |
8ac85365 | 4450 | ck_index(OP *o) |
79072805 | 4451 | { |
11343788 MB |
4452 | if (o->op_flags & OPf_KIDS) { |
4453 | OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
79072805 | 4454 | if (kid && kid->op_type == OP_CONST) |
2779dcf1 | 4455 | fbm_compile(((SVOP*)kid)->op_sv, 0); |
79072805 | 4456 | } |
11343788 | 4457 | return ck_fun(o); |
79072805 LW |
4458 | } |
4459 | ||
4460 | OP * | |
8ac85365 | 4461 | ck_lengthconst(OP *o) |
79072805 LW |
4462 | { |
4463 | /* XXX length optimization goes here */ | |
11343788 | 4464 | return ck_fun(o); |
79072805 LW |
4465 | } |
4466 | ||
4467 | OP * | |
8ac85365 | 4468 | ck_lfun(OP *o) |
79072805 | 4469 | { |
5dc0d613 MB |
4470 | OPCODE type = o->op_type; |
4471 | return modkids(ck_fun(o), type); | |
79072805 LW |
4472 | } |
4473 | ||
4474 | OP * | |
8ac85365 | 4475 | ck_rfun(OP *o) |
8990e307 | 4476 | { |
5dc0d613 MB |
4477 | OPCODE type = o->op_type; |
4478 | return refkids(ck_fun(o), type); | |
8990e307 LW |
4479 | } |
4480 | ||
4481 | OP * | |
8ac85365 | 4482 | ck_listiob(OP *o) |
79072805 LW |
4483 | { |
4484 | register OP *kid; | |
aeea060c | 4485 | |
11343788 | 4486 | kid = cLISTOPo->op_first; |
79072805 | 4487 | if (!kid) { |
11343788 MB |
4488 | o = force_list(o); |
4489 | kid = cLISTOPo->op_first; | |
79072805 LW |
4490 | } |
4491 | if (kid->op_type == OP_PUSHMARK) | |
4492 | kid = kid->op_sibling; | |
11343788 | 4493 | if (kid && o->op_flags & OPf_STACKED) |
79072805 LW |
4494 | kid = kid->op_sibling; |
4495 | else if (kid && !kid->op_sibling) { /* print HANDLE; */ | |
4496 | if (kid->op_type == OP_CONST && kid->op_private & OPpCONST_BARE) { | |
11343788 | 4497 | o->op_flags |= OPf_STACKED; /* make it a filehandle */ |
748a9306 | 4498 | kid = newUNOP(OP_RV2GV, OPf_REF, scalar(kid)); |
11343788 MB |
4499 | cLISTOPo->op_first->op_sibling = kid; |
4500 | cLISTOPo->op_last = kid; | |
79072805 LW |
4501 | kid = kid->op_sibling; |
4502 | } | |
4503 | } | |
4504 | ||
4505 | if (!kid) | |
54b9620d | 4506 | append_elem(o->op_type, o, newDEFSVOP()); |
79072805 | 4507 | |
5dc0d613 | 4508 | o = listkids(o); |
bbce6d69 | 4509 | |
5dc0d613 | 4510 | o->op_private = 0; |
36477c24 | 4511 | #ifdef USE_LOCALE |
3280af22 | 4512 | if (PL_hints & HINT_LOCALE) |
5dc0d613 | 4513 | o->op_private |= OPpLOCALE; |
bbce6d69 | 4514 | #endif |
4515 | ||
5dc0d613 | 4516 | return o; |
bbce6d69 | 4517 | } |
4518 | ||
4519 | OP * | |
8ac85365 | 4520 | ck_fun_locale(OP *o) |
bbce6d69 | 4521 | { |
5dc0d613 | 4522 | o = ck_fun(o); |
bbce6d69 | 4523 | |
5dc0d613 | 4524 | o->op_private = 0; |
36477c24 | 4525 | #ifdef USE_LOCALE |
3280af22 | 4526 | if (PL_hints & HINT_LOCALE) |
5dc0d613 | 4527 | o->op_private |= OPpLOCALE; |
bbce6d69 | 4528 | #endif |
4529 | ||
5dc0d613 | 4530 | return o; |
bbce6d69 | 4531 | } |
4532 | ||
4533 | OP * | |
8ac85365 | 4534 | ck_scmp(OP *o) |
bbce6d69 | 4535 | { |
5dc0d613 | 4536 | o->op_private = 0; |
36477c24 | 4537 | #ifdef USE_LOCALE |
3280af22 | 4538 | if (PL_hints & HINT_LOCALE) |
5dc0d613 | 4539 | o->op_private |= OPpLOCALE; |
bbce6d69 | 4540 | #endif |
36477c24 | 4541 | |
5dc0d613 | 4542 | return o; |
79072805 LW |
4543 | } |
4544 | ||
4545 | OP * | |
8ac85365 | 4546 | ck_match(OP *o) |
79072805 | 4547 | { |
5dc0d613 | 4548 | o->op_private |= OPpRUNTIME; |
11343788 | 4549 | return o; |
79072805 LW |
4550 | } |
4551 | ||
4552 | OP * | |
8ac85365 | 4553 | ck_null(OP *o) |
79072805 | 4554 | { |
11343788 | 4555 | return o; |
79072805 LW |
4556 | } |
4557 | ||
4558 | OP * | |
8ac85365 | 4559 | ck_repeat(OP *o) |
79072805 | 4560 | { |
11343788 MB |
4561 | if (cBINOPo->op_first->op_flags & OPf_PARENS) { |
4562 | o->op_private |= OPpREPEAT_DOLIST; | |
4563 | cBINOPo->op_first = force_list(cBINOPo->op_first); | |
79072805 LW |
4564 | } |
4565 | else | |
11343788 MB |
4566 | scalar(o); |
4567 | return o; | |
79072805 LW |
4568 | } |
4569 | ||
4570 | OP * | |
8ac85365 | 4571 | ck_require(OP *o) |
8990e307 | 4572 | { |
11343788 MB |
4573 | if (o->op_flags & OPf_KIDS) { /* Shall we supply missing .pm? */ |
4574 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
8990e307 LW |
4575 | |
4576 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
8990e307 | 4577 | char *s; |
a0d0e21e LW |
4578 | for (s = SvPVX(kid->op_sv); *s; s++) { |
4579 | if (*s == ':' && s[1] == ':') { | |
4580 | *s = '/'; | |
1aef975c | 4581 | Move(s+2, s+1, strlen(s+2)+1, char); |
a0d0e21e LW |
4582 | --SvCUR(kid->op_sv); |
4583 | } | |
8990e307 | 4584 | } |
a0d0e21e | 4585 | sv_catpvn(kid->op_sv, ".pm", 3); |
8990e307 LW |
4586 | } |
4587 | } | |
11343788 | 4588 | return ck_fun(o); |
8990e307 LW |
4589 | } |
4590 | ||
4591 | OP * | |
8ac85365 | 4592 | ck_retarget(OP *o) |
79072805 | 4593 | { |
463ee0b2 | 4594 | croak("NOT IMPL LINE %d",__LINE__); |
79072805 | 4595 | /* STUB */ |
11343788 | 4596 | return o; |
79072805 LW |
4597 | } |
4598 | ||
4599 | OP * | |
8ac85365 | 4600 | ck_select(OP *o) |
79072805 | 4601 | { |
c07a80fd | 4602 | OP* kid; |
11343788 MB |
4603 | if (o->op_flags & OPf_KIDS) { |
4604 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
2304df62 | 4605 | if (kid && kid->op_sibling) { |
11343788 MB |
4606 | o->op_type = OP_SSELECT; |
4607 | o->op_ppaddr = ppaddr[OP_SSELECT]; | |
4608 | o = ck_fun(o); | |
4609 | return fold_constants(o); | |
79072805 LW |
4610 | } |
4611 | } | |
11343788 MB |
4612 | o = ck_fun(o); |
4613 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
c07a80fd | 4614 | if (kid && kid->op_type == OP_RV2GV) |
4615 | kid->op_private &= ~HINT_STRICT_REFS; | |
11343788 | 4616 | return o; |
79072805 LW |
4617 | } |
4618 | ||
4619 | OP * | |
8ac85365 | 4620 | ck_shift(OP *o) |
79072805 | 4621 | { |
11343788 | 4622 | I32 type = o->op_type; |
79072805 | 4623 | |
11343788 | 4624 | if (!(o->op_flags & OPf_KIDS)) { |
6d4ff0d2 MB |
4625 | OP *argop; |
4626 | ||
11343788 | 4627 | op_free(o); |
6d4ff0d2 | 4628 | #ifdef USE_THREADS |
533c011a | 4629 | if (!CvUNIQUE(PL_compcv)) { |
6d4ff0d2 | 4630 | argop = newOP(OP_PADAV, OPf_REF); |
6b88bc9c | 4631 | argop->op_targ = 0; /* PL_curpad[0] is @_ */ |
6d4ff0d2 MB |
4632 | } |
4633 | else { | |
4634 | argop = newUNOP(OP_RV2AV, 0, | |
4635 | scalar(newGVOP(OP_GV, 0, | |
4636 | gv_fetchpv("ARGV", TRUE, SVt_PVAV)))); | |
4637 | } | |
4638 | #else | |
4639 | argop = newUNOP(OP_RV2AV, 0, | |
3280af22 NIS |
4640 | scalar(newGVOP(OP_GV, 0, !CvUNIQUE(PL_compcv) ? |
4641 | PL_defgv : gv_fetchpv("ARGV", TRUE, SVt_PVAV)))); | |
6d4ff0d2 MB |
4642 | #endif /* USE_THREADS */ |
4643 | return newUNOP(type, 0, scalar(argop)); | |
79072805 | 4644 | } |
11343788 | 4645 | return scalar(modkids(ck_fun(o), type)); |
79072805 LW |
4646 | } |
4647 | ||
4648 | OP * | |
8ac85365 | 4649 | ck_sort(OP *o) |
79072805 | 4650 | { |
5dc0d613 | 4651 | o->op_private = 0; |
36477c24 | 4652 | #ifdef USE_LOCALE |
3280af22 | 4653 | if (PL_hints & HINT_LOCALE) |
5dc0d613 | 4654 | o->op_private |= OPpLOCALE; |
bbce6d69 | 4655 | #endif |
4656 | ||
11343788 MB |
4657 | if (o->op_flags & OPf_STACKED) { |
4658 | OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
463ee0b2 LW |
4659 | OP *k; |
4660 | kid = kUNOP->op_first; /* get past rv2gv */ | |
79072805 | 4661 | |
463ee0b2 | 4662 | if (kid->op_type == OP_SCOPE || kid->op_type == OP_LEAVE) { |
79072805 | 4663 | linklist(kid); |
463ee0b2 LW |
4664 | if (kid->op_type == OP_SCOPE) { |
4665 | k = kid->op_next; | |
4666 | kid->op_next = 0; | |
79072805 | 4667 | } |
463ee0b2 | 4668 | else if (kid->op_type == OP_LEAVE) { |
11343788 | 4669 | if (o->op_type == OP_SORT) { |
748a9306 LW |
4670 | null(kid); /* wipe out leave */ |
4671 | kid->op_next = kid; | |
463ee0b2 | 4672 | |
748a9306 LW |
4673 | for (k = kLISTOP->op_first->op_next; k; k = k->op_next) { |
4674 | if (k->op_next == kid) | |
4675 | k->op_next = 0; | |
4676 | } | |
463ee0b2 | 4677 | } |
748a9306 LW |
4678 | else |
4679 | kid->op_next = 0; /* just disconnect the leave */ | |
a0d0e21e | 4680 | k = kLISTOP->op_first; |
463ee0b2 | 4681 | } |
a0d0e21e LW |
4682 | peep(k); |
4683 | ||
11343788 | 4684 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
8990e307 | 4685 | null(kid); /* wipe out rv2gv */ |
11343788 | 4686 | if (o->op_type == OP_SORT) |
a0d0e21e LW |
4687 | kid->op_next = kid; |
4688 | else | |
4689 | kid->op_next = k; | |
11343788 | 4690 | o->op_flags |= OPf_SPECIAL; |
79072805 LW |
4691 | } |
4692 | } | |
bbce6d69 | 4693 | |
11343788 | 4694 | return o; |
79072805 LW |
4695 | } |
4696 | ||
4697 | OP * | |
8ac85365 | 4698 | ck_split(OP *o) |
79072805 LW |
4699 | { |
4700 | register OP *kid; | |
aeea060c | 4701 | |
11343788 MB |
4702 | if (o->op_flags & OPf_STACKED) |
4703 | return no_fh_allowed(o); | |
79072805 | 4704 | |
11343788 | 4705 | kid = cLISTOPo->op_first; |
8990e307 | 4706 | if (kid->op_type != OP_NULL) |
463ee0b2 | 4707 | croak("panic: ck_split"); |
8990e307 | 4708 | kid = kid->op_sibling; |
11343788 MB |
4709 | op_free(cLISTOPo->op_first); |
4710 | cLISTOPo->op_first = kid; | |
85e6fe83 | 4711 | if (!kid) { |
11343788 MB |
4712 | cLISTOPo->op_first = kid = newSVOP(OP_CONST, 0, newSVpv(" ", 1)); |
4713 | cLISTOPo->op_last = kid; /* There was only one element previously */ | |
85e6fe83 | 4714 | } |
79072805 LW |
4715 | |
4716 | if (kid->op_type != OP_MATCH) { | |
4717 | OP *sibl = kid->op_sibling; | |
463ee0b2 | 4718 | kid->op_sibling = 0; |
79072805 | 4719 | kid = pmruntime( newPMOP(OP_MATCH, OPf_SPECIAL), kid, Nullop); |
11343788 MB |
4720 | if (cLISTOPo->op_first == cLISTOPo->op_last) |
4721 | cLISTOPo->op_last = kid; | |
4722 | cLISTOPo->op_first = kid; | |
79072805 LW |
4723 | kid->op_sibling = sibl; |
4724 | } | |
4725 | ||
4726 | kid->op_type = OP_PUSHRE; | |
4727 | kid->op_ppaddr = ppaddr[OP_PUSHRE]; | |
4728 | scalar(kid); | |
4729 | ||
4730 | if (!kid->op_sibling) | |
54b9620d | 4731 | append_elem(OP_SPLIT, o, newDEFSVOP()); |
79072805 LW |
4732 | |
4733 | kid = kid->op_sibling; | |
4734 | scalar(kid); | |
4735 | ||
4736 | if (!kid->op_sibling) | |
11343788 | 4737 | append_elem(OP_SPLIT, o, newSVOP(OP_CONST, 0, newSViv(0))); |
79072805 LW |
4738 | |
4739 | kid = kid->op_sibling; | |
4740 | scalar(kid); | |
4741 | ||
4742 | if (kid->op_sibling) | |
11343788 | 4743 | return too_many_arguments(o,op_desc[o->op_type]); |
79072805 | 4744 | |
11343788 | 4745 | return o; |
79072805 LW |
4746 | } |
4747 | ||
4748 | OP * | |
8ac85365 | 4749 | ck_subr(OP *o) |
79072805 | 4750 | { |
11343788 MB |
4751 | dTHR; |
4752 | OP *prev = ((cUNOPo->op_first->op_sibling) | |
4753 | ? cUNOPo : ((UNOP*)cUNOPo->op_first))->op_first; | |
4754 | OP *o2 = prev->op_sibling; | |
4633a7c4 LW |
4755 | OP *cvop; |
4756 | char *proto = 0; | |
4757 | CV *cv = 0; | |
46fc3d4c | 4758 | GV *namegv = 0; |
4633a7c4 LW |
4759 | int optional = 0; |
4760 | I32 arg = 0; | |
4761 | ||
11343788 | 4762 | for (cvop = o2; cvop->op_sibling; cvop = cvop->op_sibling) ; |
4633a7c4 LW |
4763 | if (cvop->op_type == OP_RV2CV) { |
4764 | SVOP* tmpop; | |
11343788 | 4765 | o->op_private |= (cvop->op_private & OPpENTERSUB_AMPER); |
4633a7c4 LW |
4766 | null(cvop); /* disable rv2cv */ |
4767 | tmpop = (SVOP*)((UNOP*)cvop)->op_first; | |
4768 | if (tmpop->op_type == OP_GV) { | |
8ebc5c01 | 4769 | cv = GvCVu(tmpop->op_sv); |
5dc0d613 | 4770 | if (cv && SvPOK(cv) && !(o->op_private & OPpENTERSUB_AMPER)) { |
46fc3d4c | 4771 | namegv = CvANON(cv) ? (GV*)tmpop->op_sv : CvGV(cv); |
3280af22 | 4772 | proto = SvPV((SV*)cv, PL_na); |
46fc3d4c | 4773 | } |
4633a7c4 LW |
4774 | } |
4775 | } | |
3280af22 NIS |
4776 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
4777 | if (PERLDB_SUB && PL_curstash != PL_debstash) | |
11343788 MB |
4778 | o->op_private |= OPpENTERSUB_DB; |
4779 | while (o2 != cvop) { | |
4633a7c4 LW |
4780 | if (proto) { |
4781 | switch (*proto) { | |
4782 | case '\0': | |
5dc0d613 | 4783 | return too_many_arguments(o, gv_ename(namegv)); |
4633a7c4 LW |
4784 | case ';': |
4785 | optional = 1; | |
4786 | proto++; | |
4787 | continue; | |
4788 | case '$': | |
4789 | proto++; | |
4790 | arg++; | |
11343788 | 4791 | scalar(o2); |
4633a7c4 LW |
4792 | break; |
4793 | case '%': | |
4794 | case '@': | |
11343788 | 4795 | list(o2); |
4633a7c4 LW |
4796 | arg++; |
4797 | break; | |
4798 | case '&': | |
4799 | proto++; | |
4800 | arg++; | |
11343788 | 4801 | if (o2->op_type != OP_REFGEN && o2->op_type != OP_UNDEF) |
5dc0d613 | 4802 | bad_type(arg, "block", gv_ename(namegv), o2); |
4633a7c4 LW |
4803 | break; |
4804 | case '*': | |
4805 | proto++; | |
4806 | arg++; | |
11343788 | 4807 | if (o2->op_type == OP_RV2GV) |
4633a7c4 LW |
4808 | goto wrapref; |
4809 | { | |
11343788 | 4810 | OP* kid = o2; |
69dcf70c | 4811 | OP* sib = kid->op_sibling; |
4633a7c4 | 4812 | kid->op_sibling = 0; |
69dcf70c MB |
4813 | o2 = newUNOP(OP_RV2GV, 0, kid); |
4814 | o2->op_sibling = sib; | |
6fa846a0 | 4815 | prev->op_sibling = o2; |
4633a7c4 LW |
4816 | } |
4817 | goto wrapref; | |
4818 | case '\\': | |
4819 | proto++; | |
4820 | arg++; | |
4821 | switch (*proto++) { | |
4822 | case '*': | |
11343788 | 4823 | if (o2->op_type != OP_RV2GV) |
5dc0d613 | 4824 | bad_type(arg, "symbol", gv_ename(namegv), o2); |
4633a7c4 LW |
4825 | goto wrapref; |
4826 | case '&': | |
11343788 | 4827 | if (o2->op_type != OP_RV2CV) |
5dc0d613 | 4828 | bad_type(arg, "sub", gv_ename(namegv), o2); |
4633a7c4 LW |
4829 | goto wrapref; |
4830 | case '$': | |
386acf99 GS |
4831 | if (o2->op_type != OP_RV2SV |
4832 | && o2->op_type != OP_PADSV | |
4833 | && o2->op_type != OP_THREADSV) | |
4834 | { | |
5dc0d613 | 4835 | bad_type(arg, "scalar", gv_ename(namegv), o2); |
386acf99 | 4836 | } |
4633a7c4 LW |
4837 | goto wrapref; |
4838 | case '@': | |
11343788 | 4839 | if (o2->op_type != OP_RV2AV && o2->op_type != OP_PADAV) |
5dc0d613 | 4840 | bad_type(arg, "array", gv_ename(namegv), o2); |
4633a7c4 LW |
4841 | goto wrapref; |
4842 | case '%': | |
11343788 | 4843 | if (o2->op_type != OP_RV2HV && o2->op_type != OP_PADHV) |
5dc0d613 | 4844 | bad_type(arg, "hash", gv_ename(namegv), o2); |
4633a7c4 LW |
4845 | wrapref: |
4846 | { | |
11343788 | 4847 | OP* kid = o2; |
6fa846a0 | 4848 | OP* sib = kid->op_sibling; |
4633a7c4 | 4849 | kid->op_sibling = 0; |
6fa846a0 GS |
4850 | o2 = newUNOP(OP_REFGEN, 0, kid); |
4851 | o2->op_sibling = sib; | |
e858de61 | 4852 | prev->op_sibling = o2; |
4633a7c4 LW |
4853 | } |
4854 | break; | |
4855 | default: goto oops; | |
4856 | } | |
4857 | break; | |
b1cb66bf | 4858 | case ' ': |
4859 | proto++; | |
4860 | continue; | |
4633a7c4 LW |
4861 | default: |
4862 | oops: | |
4863 | croak("Malformed prototype for %s: %s", | |
3280af22 | 4864 | gv_ename(namegv), SvPV((SV*)cv, PL_na)); |
4633a7c4 LW |
4865 | } |
4866 | } | |
4867 | else | |
11343788 MB |
4868 | list(o2); |
4869 | mod(o2, OP_ENTERSUB); | |
4870 | prev = o2; | |
4871 | o2 = o2->op_sibling; | |
4633a7c4 | 4872 | } |
fb73857a | 4873 | if (proto && !optional && |
4874 | (*proto && *proto != '@' && *proto != '%' && *proto != ';')) | |
5dc0d613 | 4875 | return too_few_arguments(o, gv_ename(namegv)); |
11343788 | 4876 | return o; |
79072805 LW |
4877 | } |
4878 | ||
4879 | OP * | |
8ac85365 | 4880 | ck_svconst(OP *o) |
8990e307 | 4881 | { |
11343788 MB |
4882 | SvREADONLY_on(cSVOPo->op_sv); |
4883 | return o; | |
8990e307 LW |
4884 | } |
4885 | ||
4886 | OP * | |
8ac85365 | 4887 | ck_trunc(OP *o) |
79072805 | 4888 | { |
11343788 MB |
4889 | if (o->op_flags & OPf_KIDS) { |
4890 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 | 4891 | |
a0d0e21e LW |
4892 | if (kid->op_type == OP_NULL) |
4893 | kid = (SVOP*)kid->op_sibling; | |
4894 | if (kid && | |
4895 | kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) | |
11343788 | 4896 | o->op_flags |= OPf_SPECIAL; |
79072805 | 4897 | } |
11343788 | 4898 | return ck_fun(o); |
79072805 LW |
4899 | } |
4900 | ||
463ee0b2 LW |
4901 | /* A peephole optimizer. We visit the ops in the order they're to execute. */ |
4902 | ||
79072805 | 4903 | void |
8ac85365 | 4904 | peep(register OP *o) |
79072805 | 4905 | { |
11343788 | 4906 | dTHR; |
79072805 | 4907 | register OP* oldop = 0; |
a0d0e21e | 4908 | if (!o || o->op_seq) |
79072805 | 4909 | return; |
a0d0e21e | 4910 | ENTER; |
462e5cf6 | 4911 | SAVEOP(); |
3280af22 | 4912 | SAVESPTR(PL_curcop); |
a0d0e21e LW |
4913 | for (; o; o = o->op_next) { |
4914 | if (o->op_seq) | |
4915 | break; | |
3280af22 NIS |
4916 | if (!PL_op_seqmax) |
4917 | PL_op_seqmax++; | |
533c011a | 4918 | PL_op = o; |
a0d0e21e LW |
4919 | switch (o->op_type) { |
4920 | case OP_NEXTSTATE: | |
4921 | case OP_DBSTATE: | |
3280af22 NIS |
4922 | PL_curcop = ((COP*)o); /* for warnings */ |
4923 | o->op_seq = PL_op_seqmax++; | |
a0d0e21e LW |
4924 | break; |
4925 | ||
4926 | case OP_CONCAT: | |
4927 | case OP_CONST: | |
4928 | case OP_JOIN: | |
4929 | case OP_UC: | |
4930 | case OP_UCFIRST: | |
4931 | case OP_LC: | |
4932 | case OP_LCFIRST: | |
4933 | case OP_QUOTEMETA: | |
3c4f770c | 4934 | if (o->op_next && o->op_next->op_type == OP_STRINGIFY) |
a0d0e21e | 4935 | null(o->op_next); |
3280af22 | 4936 | o->op_seq = PL_op_seqmax++; |
a0d0e21e | 4937 | break; |
8990e307 | 4938 | case OP_STUB: |
54310121 | 4939 | if ((o->op_flags & OPf_WANT) != OPf_WANT_LIST) { |
3280af22 | 4940 | o->op_seq = PL_op_seqmax++; |
54310121 | 4941 | break; /* Scalar stub must produce undef. List stub is noop */ |
8990e307 | 4942 | } |
748a9306 | 4943 | goto nothin; |
79072805 | 4944 | case OP_NULL: |
748a9306 | 4945 | if (o->op_targ == OP_NEXTSTATE || o->op_targ == OP_DBSTATE) |
3280af22 | 4946 | PL_curcop = ((COP*)o); |
748a9306 | 4947 | goto nothin; |
79072805 | 4948 | case OP_SCALAR: |
93a17b20 | 4949 | case OP_LINESEQ: |
463ee0b2 | 4950 | case OP_SCOPE: |
748a9306 | 4951 | nothin: |
a0d0e21e LW |
4952 | if (oldop && o->op_next) { |
4953 | oldop->op_next = o->op_next; | |
79072805 LW |
4954 | continue; |
4955 | } | |
3280af22 | 4956 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
4957 | break; |
4958 | ||
4959 | case OP_GV: | |
a0d0e21e | 4960 | if (o->op_next->op_type == OP_RV2SV) { |
5f05dabc | 4961 | if (!(o->op_next->op_private & OPpDEREF)) { |
a0d0e21e LW |
4962 | null(o->op_next); |
4963 | o->op_private |= o->op_next->op_private & OPpLVAL_INTRO; | |
4964 | o->op_next = o->op_next->op_next; | |
4965 | o->op_type = OP_GVSV; | |
4966 | o->op_ppaddr = ppaddr[OP_GVSV]; | |
8990e307 LW |
4967 | } |
4968 | } | |
a0d0e21e LW |
4969 | else if (o->op_next->op_type == OP_RV2AV) { |
4970 | OP* pop = o->op_next->op_next; | |
4971 | IV i; | |
8990e307 | 4972 | if (pop->op_type == OP_CONST && |
533c011a | 4973 | (PL_op = pop->op_next) && |
8990e307 | 4974 | pop->op_next->op_type == OP_AELEM && |
a0d0e21e | 4975 | !(pop->op_next->op_private & |
68dc0745 | 4976 | (OPpLVAL_INTRO|OPpLVAL_DEFER|OPpDEREF)) && |
3280af22 | 4977 | (i = SvIV(((SVOP*)pop)->op_sv) - PL_compiling.cop_arybase) |
a0d0e21e | 4978 | <= 255 && |
8990e307 LW |
4979 | i >= 0) |
4980 | { | |
748a9306 | 4981 | SvREFCNT_dec(((SVOP*)pop)->op_sv); |
a0d0e21e | 4982 | null(o->op_next); |
8990e307 LW |
4983 | null(pop->op_next); |
4984 | null(pop); | |
a0d0e21e LW |
4985 | o->op_flags |= pop->op_next->op_flags & OPf_MOD; |
4986 | o->op_next = pop->op_next->op_next; | |
4987 | o->op_type = OP_AELEMFAST; | |
4988 | o->op_ppaddr = ppaddr[OP_AELEMFAST]; | |
4989 | o->op_private = (U8)i; | |
a6006777 | 4990 | GvAVn(((GVOP*)o)->op_gv); |
8990e307 | 4991 | } |
79072805 | 4992 | } |
3280af22 | 4993 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
4994 | break; |
4995 | ||
af41f3ca MB |
4996 | case OP_PADAV: |
4997 | if (o->op_next->op_type == OP_RV2AV | |
49e9fbe6 | 4998 | && (o->op_next->op_flags & OPf_REF)) |
af41f3ca MB |
4999 | { |
5000 | null(o->op_next); | |
5001 | o->op_next = o->op_next->op_next; | |
5002 | } | |
5003 | break; | |
aeea060c | 5004 | |
af41f3ca MB |
5005 | case OP_PADHV: |
5006 | if (o->op_next->op_type == OP_RV2HV | |
49e9fbe6 | 5007 | && (o->op_next->op_flags & OPf_REF)) |
af41f3ca MB |
5008 | { |
5009 | null(o->op_next); | |
5010 | o->op_next = o->op_next->op_next; | |
5011 | } | |
5012 | break; | |
5013 | ||
a0d0e21e | 5014 | case OP_MAPWHILE: |
79072805 LW |
5015 | case OP_GREPWHILE: |
5016 | case OP_AND: | |
5017 | case OP_OR: | |
3280af22 | 5018 | o->op_seq = PL_op_seqmax++; |
fd4d1407 IZ |
5019 | while (cLOGOP->op_other->op_type == OP_NULL) |
5020 | cLOGOP->op_other = cLOGOP->op_other->op_next; | |
79072805 LW |
5021 | peep(cLOGOP->op_other); |
5022 | break; | |
5023 | ||
5024 | case OP_COND_EXPR: | |
3280af22 | 5025 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
5026 | peep(cCONDOP->op_true); |
5027 | peep(cCONDOP->op_false); | |
5028 | break; | |
5029 | ||
5030 | case OP_ENTERLOOP: | |
3280af22 | 5031 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
5032 | peep(cLOOP->op_redoop); |
5033 | peep(cLOOP->op_nextop); | |
5034 | peep(cLOOP->op_lastop); | |
5035 | break; | |
5036 | ||
8782bef2 | 5037 | case OP_QR: |
79072805 LW |
5038 | case OP_MATCH: |
5039 | case OP_SUBST: | |
3280af22 | 5040 | o->op_seq = PL_op_seqmax++; |
a0d0e21e | 5041 | peep(cPMOP->op_pmreplstart); |
79072805 LW |
5042 | break; |
5043 | ||
a0d0e21e | 5044 | case OP_EXEC: |
3280af22 NIS |
5045 | o->op_seq = PL_op_seqmax++; |
5046 | if (PL_dowarn && o->op_next && o->op_next->op_type == OP_NEXTSTATE) { | |
a0d0e21e | 5047 | if (o->op_next->op_sibling && |
20408e3c GS |
5048 | o->op_next->op_sibling->op_type != OP_EXIT && |
5049 | o->op_next->op_sibling->op_type != OP_WARN && | |
a0d0e21e | 5050 | o->op_next->op_sibling->op_type != OP_DIE) { |
3280af22 | 5051 | line_t oldline = PL_curcop->cop_line; |
a0d0e21e | 5052 | |
3280af22 | 5053 | PL_curcop->cop_line = ((COP*)o->op_next)->cop_line; |
a0d0e21e LW |
5054 | warn("Statement unlikely to be reached"); |
5055 | warn("(Maybe you meant system() when you said exec()?)\n"); | |
3280af22 | 5056 | PL_curcop->cop_line = oldline; |
a0d0e21e LW |
5057 | } |
5058 | } | |
5059 | break; | |
aeea060c | 5060 | |
c750a3ec MB |
5061 | case OP_HELEM: { |
5062 | UNOP *rop; | |
5063 | SV *lexname; | |
5064 | GV **fields; | |
5065 | SV **svp, **indsvp; | |
5066 | I32 ind; | |
5067 | char *key; | |
5068 | STRLEN keylen; | |
aeea060c | 5069 | |
c750a3ec MB |
5070 | if (o->op_private & (OPpDEREF_HV|OPpDEREF_AV|OPpLVAL_INTRO) |
5071 | || ((BINOP*)o)->op_last->op_type != OP_CONST) | |
5072 | break; | |
5073 | rop = (UNOP*)((BINOP*)o)->op_first; | |
5074 | if (rop->op_type != OP_RV2HV || rop->op_first->op_type != OP_PADSV) | |
5075 | break; | |
3280af22 | 5076 | lexname = *av_fetch(PL_comppad_name, rop->op_first->op_targ, TRUE); |
c750a3ec MB |
5077 | if (!SvOBJECT(lexname)) |
5078 | break; | |
5196be3e | 5079 | fields = (GV**)hv_fetch(SvSTASH(lexname), "FIELDS", 6, FALSE); |
c750a3ec MB |
5080 | if (!fields || !GvHV(*fields)) |
5081 | break; | |
5082 | svp = &((SVOP*)((BINOP*)o)->op_last)->op_sv; | |
5083 | key = SvPV(*svp, keylen); | |
5084 | indsvp = hv_fetch(GvHV(*fields), key, keylen, FALSE); | |
5085 | if (!indsvp) { | |
5086 | croak("No such field \"%s\" in variable %s of type %s", | |
3280af22 | 5087 | key, SvPV(lexname, PL_na), HvNAME(SvSTASH(lexname))); |
c750a3ec MB |
5088 | } |
5089 | ind = SvIV(*indsvp); | |
5090 | if (ind < 1) | |
5091 | croak("Bad index while coercing array into hash"); | |
5092 | rop->op_type = OP_RV2AV; | |
5093 | rop->op_ppaddr = ppaddr[OP_RV2AV]; | |
5094 | o->op_type = OP_AELEM; | |
5095 | o->op_ppaddr = ppaddr[OP_AELEM]; | |
5096 | SvREFCNT_dec(*svp); | |
5097 | *svp = newSViv(ind); | |
5098 | break; | |
5099 | } | |
5100 | ||
79072805 | 5101 | default: |
3280af22 | 5102 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
5103 | break; |
5104 | } | |
a0d0e21e | 5105 | oldop = o; |
79072805 | 5106 | } |
a0d0e21e | 5107 | LEAVE; |
79072805 | 5108 | } |