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) \ |
28757baa | 32 | ((op_mask && 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); |
4633a7c4 LW |
59 | return SvPV(tmpsv,na); |
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 ? '&' : '%')); | |
102 | if (in_eval & 2) | |
103 | warn("%_", msg); | |
104 | else if (in_eval) | |
105 | sv_catsv(GvSV(errgv), msg); | |
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 | } | |
93965878 | 129 | if (dowarn && AvFILLp(comppad_name) >= 0) { |
b1cb66bf | 130 | SV **svp = AvARRAY(comppad_name); |
93965878 | 131 | for (off = AvFILLp(comppad_name); off > comppad_name_floor; off--) { |
b1cb66bf | 132 | if ((sv = svp[off]) |
133 | && sv != &sv_undef | |
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); | |
c750a3ec MB |
146 | if (in_my_stash) { |
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); | |
151 | SvSTASH(sv) = (HV*)SvREFCNT_inc(in_my_stash); | |
152 | sv_objcount++; | |
153 | } | |
8990e307 | 154 | av_store(comppad_name, off, sv); |
748a9306 | 155 | SvNVX(sv) = (double)999999999; |
8990e307 LW |
156 | SvIVX(sv) = 0; /* Not yet introduced--see newSTATEOP */ |
157 | if (!min_intro_pending) | |
158 | min_intro_pending = off; | |
159 | max_intro_pending = off; | |
93a17b20 | 160 | if (*name == '@') |
463ee0b2 | 161 | av_store(comppad, off, (SV*)newAV()); |
93a17b20 | 162 | else if (*name == '%') |
463ee0b2 | 163 | av_store(comppad, off, (SV*)newHV()); |
ed6116ce | 164 | SvPADMY_on(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 | |
748a9306 | 184 | if (!svp || *svp == &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 LW |
189 | if ((sv = svp[off]) && |
190 | sv != &sv_undef && | |
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); | |
215 | av_store(comppad_name, newoff, namesv); | |
216 | SvNVX(namesv) = (double)curcop->cop_seq; | |
217 | SvIVX(namesv) = 999999999; /* A ref, intro immediately */ | |
218 | SvFAKE_on(namesv); /* A ref, not a real var */ | |
774d564b | 219 | if (CvANON(compcv) || SvTYPE(compcv) == SVt_PVFM) { |
28757baa | 220 | /* "It's closures all the way down." */ |
221 | CvCLONE_on(compcv); | |
54310121 | 222 | if (cv == startcv) { |
223 | if (CvANON(compcv)) | |
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 { | |
774d564b | 234 | if (dowarn && !CvUNIQUE(cv)) |
44a8e56a | 235 | warn( |
236 | "Variable \"%s\" may be unavailable", | |
28757baa | 237 | name); |
238 | break; | |
239 | } | |
240 | } | |
241 | } | |
242 | } | |
44a8e56a | 243 | else if (!CvUNIQUE(compcv)) { |
9607fc9c | 244 | if (dowarn && !SvFAKE(sv) && !CvUNIQUE(cv)) |
44a8e56a | 245 | warn("Variable \"%s\" will not stay shared", name); |
5f05dabc | 246 | } |
748a9306 | 247 | } |
199100c8 | 248 | av_store(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; | |
266 | return pad_findlex(name, newoff, seq, main_cv, 0); | |
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; | |
748a9306 LW |
283 | if (debstash && CvSTASH(cv) == debstash) { /* ignore DB'* scope */ |
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 LW |
301 | SV *sv; |
302 | SV **svp = AvARRAY(comppad_name); | |
bbce6d69 | 303 | U32 seq = 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. */ |
93965878 | 319 | for (off = AvFILLp(comppad_name); off > 0; off--) { |
a0d0e21e LW |
320 | if ((sv = svp[off]) && |
321 | sv != &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 */ | |
334 | off = pad_findlex(name, 0, seq, CvOUTSIDE(compcv), cxstack_ix); | |
54310121 | 335 | if (off) { |
336 | /* If there is a pending local definition, this new alias must die */ | |
337 | if (pendoff) | |
338 | SvIVX(AvARRAY(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; | |
8990e307 | 348 | SV **svp = AvARRAY(comppad_name); |
93a17b20 | 349 | SV *sv; |
8990e307 LW |
350 | if (min_intro_pending && fill < min_intro_pending) { |
351 | for (off = max_intro_pending; off >= min_intro_pending; off--) { | |
a0d0e21e | 352 | if ((sv = svp[off]) && sv != &sv_undef) |
8990e307 LW |
353 | warn("%s never introduced", SvPVX(sv)); |
354 | } | |
355 | } | |
356 | /* "Deintroduce" my variables that are leaving with this scope. */ | |
93965878 | 357 | for (off = AvFILLp(comppad_name); off > fill; off--) { |
748a9306 | 358 | if ((sv = svp[off]) && sv != &sv_undef && SvIVX(sv) == 999999999) |
463ee0b2 | 359 | SvIVX(sv) = 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 | ||
370 | if (AvARRAY(comppad) != curpad) | |
463ee0b2 | 371 | croak("panic: pad_alloc"); |
a0d0e21e LW |
372 | if (pad_reset_pending) |
373 | pad_reset(); | |
ed6116ce | 374 | if (tmptype & SVs_PADMY) { |
79072805 | 375 | do { |
93965878 | 376 | sv = *av_fetch(comppad, AvFILLp(comppad) + 1, TRUE); |
ed6116ce | 377 | } while (SvPADBUSY(sv)); /* need a fresh one */ |
93965878 | 378 | retval = AvFILLp(comppad); |
79072805 LW |
379 | } |
380 | else { | |
bbce6d69 | 381 | SV **names = AvARRAY(comppad_name); |
93965878 | 382 | SSize_t names_fill = AvFILLp(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 | */ | |
389 | if (++padix <= names_fill && | |
390 | (sv = names[padix]) && sv != &sv_undef) | |
391 | continue; | |
392 | sv = *av_fetch(comppad, padix, TRUE); | |
393 | if (!(SvFLAGS(sv) & (SVs_PADTMP|SVs_PADMY))) | |
394 | break; | |
395 | } | |
79072805 LW |
396 | retval = padix; |
397 | } | |
8990e307 | 398 | SvFLAGS(sv) |= tmptype; |
79072805 | 399 | curpad = AvARRAY(comppad); |
11343788 | 400 | #ifdef USE_THREADS |
5dc0d613 MB |
401 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx alloc %ld for %s\n", |
402 | (unsigned long) thr, (unsigned long) curpad, | |
403 | (long) retval, op_name[optype])); | |
11343788 | 404 | #else |
d9bb4600 GS |
405 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx alloc %ld for %s\n", |
406 | (unsigned long) 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 MB |
417 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx sv %d\n", |
418 | (unsigned long) thr, (unsigned long) curpad, po)); | |
11343788 | 419 | #else |
79072805 | 420 | if (!po) |
463ee0b2 | 421 | croak("panic: pad_sv po"); |
d9bb4600 GS |
422 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx sv %d\n", |
423 | (unsigned long) curpad, po)); | |
11343788 | 424 | #endif /* USE_THREADS */ |
79072805 LW |
425 | return curpad[po]; /* eventually we'll turn this into a macro */ |
426 | } | |
427 | ||
428 | void | |
8990e307 | 429 | pad_free(PADOFFSET po) |
79072805 | 430 | { |
11343788 | 431 | dTHR; |
a0d0e21e LW |
432 | if (!curpad) |
433 | return; | |
79072805 | 434 | if (AvARRAY(comppad) != 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 MB |
439 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx free %d\n", |
440 | (unsigned long) thr, (unsigned long) curpad, po)); | |
11343788 | 441 | #else |
d9bb4600 GS |
442 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx free %d\n", |
443 | (unsigned long) curpad, po)); | |
11343788 | 444 | #endif /* USE_THREADS */ |
a0d0e21e | 445 | if (curpad[po] && curpad[po] != &sv_undef) |
ed6116ce | 446 | SvPADTMP_off(curpad[po]); |
a0d0e21e | 447 | if ((I32)po < padix) |
79072805 LW |
448 | padix = po - 1; |
449 | } | |
450 | ||
451 | void | |
8990e307 | 452 | pad_swipe(PADOFFSET po) |
79072805 | 453 | { |
11343788 | 454 | dTHR; |
79072805 | 455 | if (AvARRAY(comppad) != 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 MB |
460 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx swipe %d\n", |
461 | (unsigned long) thr, (unsigned long) curpad, po)); | |
11343788 | 462 | #else |
d9bb4600 GS |
463 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx swipe %d\n", |
464 | (unsigned long) curpad, po)); | |
11343788 | 465 | #endif /* USE_THREADS */ |
ed6116ce | 466 | SvPADTMP_off(curpad[po]); |
a0d0e21e LW |
467 | curpad[po] = NEWSV(1107,0); |
468 | SvPADTMP_on(curpad[po]); | |
469 | if ((I32)po < padix) | |
79072805 LW |
470 | padix = po - 1; |
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 | ||
486 | if (AvARRAY(comppad) != curpad) | |
463ee0b2 | 487 | croak("panic: pad_reset curpad"); |
11343788 | 488 | #ifdef USE_THREADS |
5dc0d613 MB |
489 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx reset\n", |
490 | (unsigned long) thr, (unsigned long) curpad)); | |
11343788 | 491 | #else |
d9bb4600 GS |
492 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx reset\n", |
493 | (unsigned long) curpad)); | |
11343788 | 494 | #endif /* USE_THREADS */ |
748a9306 LW |
495 | if (!tainting) { /* Can't mix tainted and non-tainted temporaries. */ |
496 | for (po = AvMAX(comppad); po > padix_floor; po--) { | |
ff0cee69 | 497 | if (curpad[po] && !SvIMMORTAL(curpad[po])) |
748a9306 LW |
498 | SvPADTMP_off(curpad[po]); |
499 | } | |
500 | padix = padix_floor; | |
79072805 | 501 | } |
d9bb4600 | 502 | #endif |
a0d0e21e | 503 | 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 MB |
515 | /* We currently only handle names of a single character */ |
516 | p = strchr(threadsv_names, *name); | |
a863c7d1 MB |
517 | if (!p) |
518 | return NOT_IN_PAD; | |
54b9620d MB |
519 | key = p - threadsv_names; |
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 '\'': | |
540 | sawampersand = TRUE; | |
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 | } |
a863c7d1 | 551 | DEBUG_L(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: |
c277df42 | 622 | ReREFCNT_dec(cPMOPo->op_pmregexp); |
a0d0e21e | 623 | break; |
79072805 LW |
624 | } |
625 | ||
11343788 MB |
626 | if (o->op_targ > 0) |
627 | pad_free(o->op_targ); | |
8990e307 | 628 | |
11343788 | 629 | Safefree(o); |
79072805 LW |
630 | } |
631 | ||
76e3520e | 632 | STATIC void |
8ac85365 | 633 | null(OP *o) |
8990e307 | 634 | { |
54b9620d | 635 | if (o->op_type != OP_NULL && o->op_type != OP_THREADSV && o->op_targ > 0) |
11343788 MB |
636 | pad_free(o->op_targ); |
637 | o->op_targ = o->op_type; | |
638 | o->op_type = OP_NULL; | |
639 | o->op_ppaddr = ppaddr[OP_NULL]; | |
8990e307 LW |
640 | } |
641 | ||
79072805 LW |
642 | /* Contextualizers */ |
643 | ||
463ee0b2 | 644 | #define LINKLIST(o) ((o)->op_next ? (o)->op_next : linklist((OP*)o)) |
79072805 LW |
645 | |
646 | OP * | |
8ac85365 | 647 | linklist(OP *o) |
79072805 LW |
648 | { |
649 | register OP *kid; | |
650 | ||
11343788 MB |
651 | if (o->op_next) |
652 | return o->op_next; | |
79072805 LW |
653 | |
654 | /* establish postfix order */ | |
11343788 MB |
655 | if (cUNOPo->op_first) { |
656 | o->op_next = LINKLIST(cUNOPo->op_first); | |
657 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) { | |
79072805 LW |
658 | if (kid->op_sibling) |
659 | kid->op_next = LINKLIST(kid->op_sibling); | |
660 | else | |
11343788 | 661 | kid->op_next = o; |
79072805 LW |
662 | } |
663 | } | |
664 | else | |
11343788 | 665 | o->op_next = o; |
79072805 | 666 | |
11343788 | 667 | return o->op_next; |
79072805 LW |
668 | } |
669 | ||
670 | OP * | |
8ac85365 | 671 | scalarkids(OP *o) |
79072805 LW |
672 | { |
673 | OP *kid; | |
11343788 MB |
674 | if (o && o->op_flags & OPf_KIDS) { |
675 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
79072805 LW |
676 | scalar(kid); |
677 | } | |
11343788 | 678 | return o; |
79072805 LW |
679 | } |
680 | ||
76e3520e | 681 | STATIC OP * |
8ac85365 | 682 | scalarboolean(OP *o) |
8990e307 LW |
683 | { |
684 | if (dowarn && | |
11343788 | 685 | o->op_type == OP_SASSIGN && cBINOPo->op_first->op_type == OP_CONST) { |
0f15f207 | 686 | dTHR; |
a0d0e21e LW |
687 | line_t oldline = curcop->cop_line; |
688 | ||
689 | if (copline != NOLINE) | |
690 | curcop->cop_line = copline; | |
691 | warn("Found = in conditional, should be =="); | |
692 | curcop->cop_line = oldline; | |
693 | } | |
11343788 | 694 | return scalar(o); |
8990e307 LW |
695 | } |
696 | ||
697 | OP * | |
8ac85365 | 698 | scalar(OP *o) |
79072805 LW |
699 | { |
700 | OP *kid; | |
701 | ||
a0d0e21e | 702 | /* assumes no premature commitment */ |
5dc0d613 MB |
703 | if (!o || (o->op_flags & OPf_WANT) || error_count |
704 | || o->op_type == OP_RETURN) | |
11343788 | 705 | return o; |
79072805 | 706 | |
5dc0d613 | 707 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_SCALAR; |
79072805 | 708 | |
11343788 | 709 | switch (o->op_type) { |
79072805 | 710 | case OP_REPEAT: |
11343788 MB |
711 | if (o->op_private & OPpREPEAT_DOLIST) |
712 | null(((LISTOP*)cBINOPo->op_first)->op_first); | |
713 | scalar(cBINOPo->op_first); | |
8990e307 | 714 | break; |
79072805 LW |
715 | case OP_OR: |
716 | case OP_AND: | |
717 | case OP_COND_EXPR: | |
11343788 | 718 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
8990e307 | 719 | scalar(kid); |
79072805 | 720 | break; |
a0d0e21e | 721 | case OP_SPLIT: |
11343788 | 722 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e LW |
723 | if (!kPMOP->op_pmreplroot) |
724 | deprecate("implicit split to @_"); | |
725 | } | |
726 | /* FALL THROUGH */ | |
79072805 LW |
727 | case OP_MATCH: |
728 | case OP_SUBST: | |
729 | case OP_NULL: | |
8990e307 | 730 | default: |
11343788 MB |
731 | if (o->op_flags & OPf_KIDS) { |
732 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) | |
8990e307 LW |
733 | scalar(kid); |
734 | } | |
79072805 LW |
735 | break; |
736 | case OP_LEAVE: | |
737 | case OP_LEAVETRY: | |
5dc0d613 | 738 | kid = cLISTOPo->op_first; |
54310121 | 739 | scalar(kid); |
740 | while (kid = kid->op_sibling) { | |
741 | if (kid->op_sibling) | |
742 | scalarvoid(kid); | |
743 | else | |
744 | scalar(kid); | |
745 | } | |
0f15f207 | 746 | WITH_THR(curcop = &compiling); |
54310121 | 747 | break; |
748a9306 | 748 | case OP_SCOPE: |
79072805 | 749 | case OP_LINESEQ: |
8990e307 | 750 | case OP_LIST: |
11343788 | 751 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
752 | if (kid->op_sibling) |
753 | scalarvoid(kid); | |
754 | else | |
755 | scalar(kid); | |
756 | } | |
0f15f207 | 757 | WITH_THR(curcop = &compiling); |
79072805 LW |
758 | break; |
759 | } | |
11343788 | 760 | return o; |
79072805 LW |
761 | } |
762 | ||
763 | OP * | |
8ac85365 | 764 | scalarvoid(OP *o) |
79072805 LW |
765 | { |
766 | OP *kid; | |
8990e307 LW |
767 | char* useless = 0; |
768 | SV* sv; | |
79072805 | 769 | |
54310121 | 770 | /* assumes no premature commitment */ |
5dc0d613 MB |
771 | if (!o || (o->op_flags & OPf_WANT) == OPf_WANT_LIST || error_count |
772 | || o->op_type == OP_RETURN) | |
11343788 | 773 | return o; |
79072805 | 774 | |
5dc0d613 | 775 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_VOID; |
79072805 | 776 | |
11343788 | 777 | switch (o->op_type) { |
79072805 | 778 | default: |
11343788 | 779 | if (!(opargs[o->op_type] & OA_FOLDCONST)) |
8990e307 | 780 | break; |
36477c24 | 781 | /* FALL THROUGH */ |
782 | case OP_REPEAT: | |
11343788 | 783 | if (o->op_flags & OPf_STACKED) |
8990e307 | 784 | break; |
5d82c453 GA |
785 | goto func_ops; |
786 | case OP_SUBSTR: | |
787 | if (o->op_private == 4) | |
788 | break; | |
8990e307 LW |
789 | /* FALL THROUGH */ |
790 | case OP_GVSV: | |
791 | case OP_WANTARRAY: | |
792 | case OP_GV: | |
793 | case OP_PADSV: | |
794 | case OP_PADAV: | |
795 | case OP_PADHV: | |
796 | case OP_PADANY: | |
797 | case OP_AV2ARYLEN: | |
8990e307 | 798 | case OP_REF: |
a0d0e21e LW |
799 | case OP_REFGEN: |
800 | case OP_SREFGEN: | |
8990e307 LW |
801 | case OP_DEFINED: |
802 | case OP_HEX: | |
803 | case OP_OCT: | |
804 | case OP_LENGTH: | |
8990e307 LW |
805 | case OP_VEC: |
806 | case OP_INDEX: | |
807 | case OP_RINDEX: | |
808 | case OP_SPRINTF: | |
809 | case OP_AELEM: | |
810 | case OP_AELEMFAST: | |
811 | case OP_ASLICE: | |
8990e307 LW |
812 | case OP_HELEM: |
813 | case OP_HSLICE: | |
814 | case OP_UNPACK: | |
815 | case OP_PACK: | |
8990e307 LW |
816 | case OP_JOIN: |
817 | case OP_LSLICE: | |
818 | case OP_ANONLIST: | |
819 | case OP_ANONHASH: | |
820 | case OP_SORT: | |
821 | case OP_REVERSE: | |
822 | case OP_RANGE: | |
823 | case OP_FLIP: | |
824 | case OP_FLOP: | |
825 | case OP_CALLER: | |
826 | case OP_FILENO: | |
827 | case OP_EOF: | |
828 | case OP_TELL: | |
829 | case OP_GETSOCKNAME: | |
830 | case OP_GETPEERNAME: | |
831 | case OP_READLINK: | |
832 | case OP_TELLDIR: | |
833 | case OP_GETPPID: | |
834 | case OP_GETPGRP: | |
835 | case OP_GETPRIORITY: | |
836 | case OP_TIME: | |
837 | case OP_TMS: | |
838 | case OP_LOCALTIME: | |
839 | case OP_GMTIME: | |
840 | case OP_GHBYNAME: | |
841 | case OP_GHBYADDR: | |
842 | case OP_GHOSTENT: | |
843 | case OP_GNBYNAME: | |
844 | case OP_GNBYADDR: | |
845 | case OP_GNETENT: | |
846 | case OP_GPBYNAME: | |
847 | case OP_GPBYNUMBER: | |
848 | case OP_GPROTOENT: | |
849 | case OP_GSBYNAME: | |
850 | case OP_GSBYPORT: | |
851 | case OP_GSERVENT: | |
852 | case OP_GPWNAM: | |
853 | case OP_GPWUID: | |
854 | case OP_GGRNAM: | |
855 | case OP_GGRGID: | |
856 | case OP_GETLOGIN: | |
5d82c453 | 857 | func_ops: |
11343788 MB |
858 | if (!(o->op_private & OPpLVAL_INTRO)) |
859 | useless = op_desc[o->op_type]; | |
8990e307 LW |
860 | break; |
861 | ||
862 | case OP_RV2GV: | |
863 | case OP_RV2SV: | |
864 | case OP_RV2AV: | |
865 | case OP_RV2HV: | |
11343788 MB |
866 | if (!(o->op_private & OPpLVAL_INTRO) && |
867 | (!o->op_sibling || o->op_sibling->op_type != OP_READLINE)) | |
8990e307 LW |
868 | useless = "a variable"; |
869 | break; | |
79072805 | 870 | |
93a17b20 | 871 | case OP_NEXTSTATE: |
8990e307 | 872 | case OP_DBSTATE: |
0f15f207 | 873 | WITH_THR(curcop = ((COP*)o)); /* for warning below */ |
93a17b20 LW |
874 | break; |
875 | ||
79072805 | 876 | case OP_CONST: |
11343788 | 877 | sv = cSVOPo->op_sv; |
8990e307 LW |
878 | if (dowarn) { |
879 | useless = "a constant"; | |
880 | if (SvNIOK(sv) && (SvNV(sv) == 0.0 || SvNV(sv) == 1.0)) | |
881 | useless = 0; | |
882 | else if (SvPOK(sv)) { | |
883 | if (strnEQ(SvPVX(sv), "di", 2) || | |
a0d0e21e | 884 | strnEQ(SvPVX(sv), "ds", 2) || |
8990e307 LW |
885 | strnEQ(SvPVX(sv), "ig", 2)) |
886 | useless = 0; | |
887 | } | |
888 | } | |
11343788 | 889 | null(o); /* don't execute a constant */ |
8990e307 | 890 | SvREFCNT_dec(sv); /* don't even remember it */ |
79072805 LW |
891 | break; |
892 | ||
893 | case OP_POSTINC: | |
11343788 MB |
894 | o->op_type = OP_PREINC; /* pre-increment is faster */ |
895 | o->op_ppaddr = ppaddr[OP_PREINC]; | |
79072805 LW |
896 | break; |
897 | ||
898 | case OP_POSTDEC: | |
11343788 MB |
899 | o->op_type = OP_PREDEC; /* pre-decrement is faster */ |
900 | o->op_ppaddr = ppaddr[OP_PREDEC]; | |
79072805 LW |
901 | break; |
902 | ||
79072805 LW |
903 | case OP_OR: |
904 | case OP_AND: | |
905 | case OP_COND_EXPR: | |
11343788 | 906 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
907 | scalarvoid(kid); |
908 | break; | |
5aabfad6 | 909 | |
a0d0e21e | 910 | case OP_NULL: |
11343788 | 911 | if (o->op_targ == OP_NEXTSTATE || o->op_targ == OP_DBSTATE) |
0f15f207 | 912 | WITH_THR(curcop = ((COP*)o)); /* for warning below */ |
11343788 | 913 | if (o->op_flags & OPf_STACKED) |
a0d0e21e | 914 | break; |
5aabfad6 | 915 | /* FALL THROUGH */ |
79072805 LW |
916 | case OP_ENTERTRY: |
917 | case OP_ENTER: | |
918 | case OP_SCALAR: | |
11343788 | 919 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 920 | break; |
54310121 | 921 | /* FALL THROUGH */ |
463ee0b2 | 922 | case OP_SCOPE: |
79072805 LW |
923 | case OP_LEAVE: |
924 | case OP_LEAVETRY: | |
a0d0e21e | 925 | case OP_LEAVELOOP: |
79072805 | 926 | case OP_LINESEQ: |
79072805 | 927 | case OP_LIST: |
11343788 | 928 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
929 | scalarvoid(kid); |
930 | break; | |
c90c0ff4 | 931 | case OP_ENTEREVAL: |
5196be3e | 932 | scalarkids(o); |
c90c0ff4 | 933 | break; |
5aabfad6 | 934 | case OP_REQUIRE: |
c90c0ff4 | 935 | /* all requires must return a boolean value */ |
5196be3e MB |
936 | o->op_flags &= ~OPf_WANT; |
937 | return scalar(o); | |
a0d0e21e | 938 | case OP_SPLIT: |
11343788 | 939 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e LW |
940 | if (!kPMOP->op_pmreplroot) |
941 | deprecate("implicit split to @_"); | |
942 | } | |
943 | break; | |
79072805 | 944 | } |
8990e307 LW |
945 | if (useless && dowarn) |
946 | warn("Useless use of %s in void context", useless); | |
11343788 | 947 | return o; |
79072805 LW |
948 | } |
949 | ||
950 | OP * | |
8ac85365 | 951 | listkids(OP *o) |
79072805 LW |
952 | { |
953 | OP *kid; | |
11343788 MB |
954 | if (o && o->op_flags & OPf_KIDS) { |
955 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
79072805 LW |
956 | list(kid); |
957 | } | |
11343788 | 958 | return o; |
79072805 LW |
959 | } |
960 | ||
961 | OP * | |
8ac85365 | 962 | list(OP *o) |
79072805 LW |
963 | { |
964 | OP *kid; | |
965 | ||
a0d0e21e | 966 | /* assumes no premature commitment */ |
5dc0d613 MB |
967 | if (!o || (o->op_flags & OPf_WANT) || error_count |
968 | || o->op_type == OP_RETURN) | |
11343788 | 969 | return o; |
79072805 | 970 | |
5dc0d613 | 971 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_LIST; |
79072805 | 972 | |
11343788 | 973 | switch (o->op_type) { |
79072805 LW |
974 | case OP_FLOP: |
975 | case OP_REPEAT: | |
11343788 | 976 | list(cBINOPo->op_first); |
79072805 LW |
977 | break; |
978 | case OP_OR: | |
979 | case OP_AND: | |
980 | case OP_COND_EXPR: | |
11343788 | 981 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
982 | list(kid); |
983 | break; | |
984 | default: | |
985 | case OP_MATCH: | |
986 | case OP_SUBST: | |
987 | case OP_NULL: | |
11343788 | 988 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 989 | break; |
11343788 MB |
990 | if (!o->op_next && cUNOPo->op_first->op_type == OP_FLOP) { |
991 | list(cBINOPo->op_first); | |
992 | return gen_constant_list(o); | |
79072805 LW |
993 | } |
994 | case OP_LIST: | |
11343788 | 995 | listkids(o); |
79072805 LW |
996 | break; |
997 | case OP_LEAVE: | |
998 | case OP_LEAVETRY: | |
5dc0d613 | 999 | kid = cLISTOPo->op_first; |
54310121 | 1000 | list(kid); |
1001 | while (kid = kid->op_sibling) { | |
1002 | if (kid->op_sibling) | |
1003 | scalarvoid(kid); | |
1004 | else | |
1005 | list(kid); | |
1006 | } | |
0f15f207 | 1007 | WITH_THR(curcop = &compiling); |
54310121 | 1008 | break; |
748a9306 | 1009 | case OP_SCOPE: |
79072805 | 1010 | case OP_LINESEQ: |
11343788 | 1011 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
1012 | if (kid->op_sibling) |
1013 | scalarvoid(kid); | |
1014 | else | |
1015 | list(kid); | |
1016 | } | |
0f15f207 | 1017 | WITH_THR(curcop = &compiling); |
79072805 | 1018 | break; |
c90c0ff4 | 1019 | case OP_REQUIRE: |
1020 | /* all requires must return a boolean value */ | |
5196be3e MB |
1021 | o->op_flags &= ~OPf_WANT; |
1022 | return scalar(o); | |
79072805 | 1023 | } |
11343788 | 1024 | return o; |
79072805 LW |
1025 | } |
1026 | ||
1027 | OP * | |
8ac85365 | 1028 | scalarseq(OP *o) |
79072805 LW |
1029 | { |
1030 | OP *kid; | |
1031 | ||
11343788 MB |
1032 | if (o) { |
1033 | if (o->op_type == OP_LINESEQ || | |
1034 | o->op_type == OP_SCOPE || | |
1035 | o->op_type == OP_LEAVE || | |
1036 | o->op_type == OP_LEAVETRY) | |
463ee0b2 | 1037 | { |
0f15f207 | 1038 | dTHR; |
11343788 | 1039 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
ed6116ce | 1040 | if (kid->op_sibling) { |
463ee0b2 | 1041 | scalarvoid(kid); |
ed6116ce | 1042 | } |
463ee0b2 LW |
1043 | } |
1044 | curcop = &compiling; | |
79072805 | 1045 | } |
11343788 | 1046 | o->op_flags &= ~OPf_PARENS; |
85e6fe83 | 1047 | if (hints & HINT_BLOCK_SCOPE) |
11343788 | 1048 | o->op_flags |= OPf_PARENS; |
79072805 | 1049 | } |
8990e307 | 1050 | else |
11343788 MB |
1051 | o = newOP(OP_STUB, 0); |
1052 | return o; | |
79072805 LW |
1053 | } |
1054 | ||
76e3520e | 1055 | STATIC OP * |
8ac85365 | 1056 | modkids(OP *o, I32 type) |
79072805 LW |
1057 | { |
1058 | OP *kid; | |
11343788 MB |
1059 | if (o && o->op_flags & OPf_KIDS) { |
1060 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
463ee0b2 | 1061 | mod(kid, type); |
79072805 | 1062 | } |
11343788 | 1063 | return o; |
79072805 LW |
1064 | } |
1065 | ||
79072805 | 1066 | OP * |
8ac85365 | 1067 | mod(OP *o, I32 type) |
79072805 | 1068 | { |
11343788 | 1069 | dTHR; |
79072805 LW |
1070 | OP *kid; |
1071 | SV *sv; | |
1072 | ||
11343788 MB |
1073 | if (!o || error_count) |
1074 | return o; | |
79072805 | 1075 | |
11343788 | 1076 | switch (o->op_type) { |
68dc0745 | 1077 | case OP_UNDEF: |
3e3baf6d | 1078 | modcount++; |
5dc0d613 | 1079 | return o; |
a0d0e21e | 1080 | case OP_CONST: |
11343788 | 1081 | if (!(o->op_private & (OPpCONST_ARYBASE))) |
a0d0e21e LW |
1082 | goto nomod; |
1083 | if (eval_start && eval_start->op_type == OP_CONST) { | |
1084 | compiling.cop_arybase = (I32)SvIV(((SVOP*)eval_start)->op_sv); | |
1085 | eval_start = 0; | |
1086 | } | |
1087 | else if (!type) { | |
1088 | SAVEI32(compiling.cop_arybase); | |
748a9306 | 1089 | compiling.cop_arybase = 0; |
a0d0e21e LW |
1090 | } |
1091 | else if (type == OP_REFGEN) | |
1092 | goto nomod; | |
1093 | else | |
1094 | croak("That use of $[ is unsupported"); | |
1095 | break; | |
5f05dabc | 1096 | case OP_STUB: |
5196be3e | 1097 | if (o->op_flags & OPf_PARENS) |
5f05dabc | 1098 | break; |
1099 | goto nomod; | |
a0d0e21e LW |
1100 | case OP_ENTERSUB: |
1101 | if ((type == OP_UNDEF || type == OP_REFGEN) && | |
11343788 MB |
1102 | !(o->op_flags & OPf_STACKED)) { |
1103 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
1104 | o->op_ppaddr = ppaddr[OP_RV2CV]; | |
1105 | assert(cUNOPo->op_first->op_type == OP_NULL); | |
1106 | null(((LISTOP*)cUNOPo->op_first)->op_first);/* disable pushmark */ | |
79072805 LW |
1107 | break; |
1108 | } | |
1109 | /* FALL THROUGH */ | |
1110 | default: | |
a0d0e21e LW |
1111 | nomod: |
1112 | /* grep, foreach, subcalls, refgen */ | |
1113 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) | |
1114 | break; | |
46fc3d4c | 1115 | yyerror(form("Can't modify %s in %s", |
5dc0d613 | 1116 | op_desc[o->op_type], |
46fc3d4c | 1117 | type ? op_desc[type] : "local")); |
11343788 | 1118 | return o; |
79072805 | 1119 | |
a0d0e21e LW |
1120 | case OP_PREINC: |
1121 | case OP_PREDEC: | |
1122 | case OP_POW: | |
1123 | case OP_MULTIPLY: | |
1124 | case OP_DIVIDE: | |
1125 | case OP_MODULO: | |
1126 | case OP_REPEAT: | |
1127 | case OP_ADD: | |
1128 | case OP_SUBTRACT: | |
1129 | case OP_CONCAT: | |
1130 | case OP_LEFT_SHIFT: | |
1131 | case OP_RIGHT_SHIFT: | |
1132 | case OP_BIT_AND: | |
1133 | case OP_BIT_XOR: | |
1134 | case OP_BIT_OR: | |
1135 | case OP_I_MULTIPLY: | |
1136 | case OP_I_DIVIDE: | |
1137 | case OP_I_MODULO: | |
1138 | case OP_I_ADD: | |
1139 | case OP_I_SUBTRACT: | |
11343788 | 1140 | if (!(o->op_flags & OPf_STACKED)) |
a0d0e21e LW |
1141 | goto nomod; |
1142 | modcount++; | |
1143 | break; | |
1144 | ||
79072805 | 1145 | case OP_COND_EXPR: |
11343788 | 1146 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 | 1147 | mod(kid, type); |
79072805 LW |
1148 | break; |
1149 | ||
1150 | case OP_RV2AV: | |
1151 | case OP_RV2HV: | |
93af7a87 | 1152 | if (!type && cUNOPo->op_first->op_type != OP_GV) |
706a304b | 1153 | croak("Can't localize through a reference"); |
11343788 | 1154 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) { |
748a9306 | 1155 | modcount = 10000; |
11343788 | 1156 | return o; /* Treat \(@foo) like ordinary list. */ |
748a9306 LW |
1157 | } |
1158 | /* FALL THROUGH */ | |
79072805 | 1159 | case OP_RV2GV: |
5dc0d613 | 1160 | if (scalar_mod_type(o, type)) |
3fe9a6f1 | 1161 | goto nomod; |
11343788 | 1162 | ref(cUNOPo->op_first, o->op_type); |
79072805 LW |
1163 | /* FALL THROUGH */ |
1164 | case OP_AASSIGN: | |
1165 | case OP_ASLICE: | |
1166 | case OP_HSLICE: | |
93a17b20 LW |
1167 | case OP_NEXTSTATE: |
1168 | case OP_DBSTATE: | |
a0d0e21e LW |
1169 | case OP_REFGEN: |
1170 | case OP_CHOMP: | |
463ee0b2 | 1171 | modcount = 10000; |
79072805 | 1172 | break; |
463ee0b2 | 1173 | case OP_RV2SV: |
11343788 | 1174 | if (!type && cUNOPo->op_first->op_type != OP_GV) |
706a304b | 1175 | croak("Can't localize through a reference"); |
aeea060c | 1176 | ref(cUNOPo->op_first, o->op_type); |
463ee0b2 | 1177 | /* FALL THROUGH */ |
79072805 | 1178 | case OP_GV: |
463ee0b2 | 1179 | case OP_AV2ARYLEN: |
85aff577 | 1180 | hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 1181 | case OP_SASSIGN: |
8990e307 LW |
1182 | case OP_AELEMFAST: |
1183 | modcount++; | |
1184 | break; | |
1185 | ||
748a9306 LW |
1186 | case OP_PADAV: |
1187 | case OP_PADHV: | |
1188 | modcount = 10000; | |
5196be3e MB |
1189 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) |
1190 | return o; /* Treat \(@foo) like ordinary list. */ | |
1191 | if (scalar_mod_type(o, type)) | |
3fe9a6f1 | 1192 | goto nomod; |
748a9306 LW |
1193 | /* FALL THROUGH */ |
1194 | case OP_PADSV: | |
1195 | modcount++; | |
1196 | if (!type) | |
1197 | croak("Can't localize lexical variable %s", | |
11343788 | 1198 | SvPV(*av_fetch(comppad_name, o->op_targ, 4), na)); |
463ee0b2 LW |
1199 | break; |
1200 | ||
554b3eca | 1201 | #ifdef USE_THREADS |
2faa37cc | 1202 | case OP_THREADSV: |
554b3eca | 1203 | modcount++; /* XXX ??? */ |
554b3eca MB |
1204 | break; |
1205 | #endif /* USE_THREADS */ | |
1206 | ||
748a9306 LW |
1207 | case OP_PUSHMARK: |
1208 | break; | |
a0d0e21e | 1209 | |
69969c6f SB |
1210 | case OP_KEYS: |
1211 | if (type != OP_SASSIGN) | |
1212 | goto nomod; | |
5d82c453 GA |
1213 | goto lvalue_func; |
1214 | case OP_SUBSTR: | |
1215 | if (o->op_private == 4) /* don't allow 4 arg substr as lvalue */ | |
1216 | goto nomod; | |
5f05dabc | 1217 | /* FALL THROUGH */ |
a0d0e21e | 1218 | case OP_POS: |
463ee0b2 | 1219 | case OP_VEC: |
5d82c453 | 1220 | lvalue_func: |
11343788 MB |
1221 | pad_free(o->op_targ); |
1222 | o->op_targ = pad_alloc(o->op_type, SVs_PADMY); | |
5dc0d613 | 1223 | assert(SvTYPE(PAD_SV(o->op_targ)) == SVt_NULL); |
11343788 MB |
1224 | if (o->op_flags & OPf_KIDS) |
1225 | mod(cBINOPo->op_first->op_sibling, type); | |
463ee0b2 | 1226 | break; |
a0d0e21e | 1227 | |
463ee0b2 LW |
1228 | case OP_AELEM: |
1229 | case OP_HELEM: | |
11343788 | 1230 | ref(cBINOPo->op_first, o->op_type); |
68dc0745 | 1231 | if (type == OP_ENTERSUB && |
5dc0d613 MB |
1232 | !(o->op_private & (OPpLVAL_INTRO | OPpDEREF))) |
1233 | o->op_private |= OPpLVAL_DEFER; | |
a0d0e21e | 1234 | modcount++; |
463ee0b2 LW |
1235 | break; |
1236 | ||
1237 | case OP_SCOPE: | |
1238 | case OP_LEAVE: | |
1239 | case OP_ENTER: | |
11343788 MB |
1240 | if (o->op_flags & OPf_KIDS) |
1241 | mod(cLISTOPo->op_last, type); | |
a0d0e21e LW |
1242 | break; |
1243 | ||
1244 | case OP_NULL: | |
11343788 | 1245 | if (!(o->op_flags & OPf_KIDS)) |
463ee0b2 | 1246 | break; |
11343788 MB |
1247 | if (o->op_targ != OP_LIST) { |
1248 | mod(cBINOPo->op_first, type); | |
a0d0e21e LW |
1249 | break; |
1250 | } | |
1251 | /* FALL THROUGH */ | |
463ee0b2 | 1252 | case OP_LIST: |
11343788 | 1253 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1254 | mod(kid, type); |
1255 | break; | |
1256 | } | |
11343788 | 1257 | o->op_flags |= OPf_MOD; |
a0d0e21e LW |
1258 | |
1259 | if (type == OP_AASSIGN || type == OP_SASSIGN) | |
11343788 | 1260 | o->op_flags |= OPf_SPECIAL|OPf_REF; |
a0d0e21e | 1261 | else if (!type) { |
11343788 MB |
1262 | o->op_private |= OPpLVAL_INTRO; |
1263 | o->op_flags &= ~OPf_SPECIAL; | |
ca48fea7 | 1264 | hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 1265 | } |
a0d0e21e | 1266 | else if (type != OP_GREPSTART && type != OP_ENTERSUB) |
11343788 MB |
1267 | o->op_flags |= OPf_REF; |
1268 | return o; | |
463ee0b2 LW |
1269 | } |
1270 | ||
3fe9a6f1 | 1271 | static bool |
8ac85365 | 1272 | scalar_mod_type(OP *o, I32 type) |
3fe9a6f1 | 1273 | { |
1274 | switch (type) { | |
1275 | case OP_SASSIGN: | |
5196be3e | 1276 | if (o->op_type == OP_RV2GV) |
3fe9a6f1 | 1277 | return FALSE; |
1278 | /* FALL THROUGH */ | |
1279 | case OP_PREINC: | |
1280 | case OP_PREDEC: | |
1281 | case OP_POSTINC: | |
1282 | case OP_POSTDEC: | |
1283 | case OP_I_PREINC: | |
1284 | case OP_I_PREDEC: | |
1285 | case OP_I_POSTINC: | |
1286 | case OP_I_POSTDEC: | |
1287 | case OP_POW: | |
1288 | case OP_MULTIPLY: | |
1289 | case OP_DIVIDE: | |
1290 | case OP_MODULO: | |
1291 | case OP_REPEAT: | |
1292 | case OP_ADD: | |
1293 | case OP_SUBTRACT: | |
1294 | case OP_I_MULTIPLY: | |
1295 | case OP_I_DIVIDE: | |
1296 | case OP_I_MODULO: | |
1297 | case OP_I_ADD: | |
1298 | case OP_I_SUBTRACT: | |
1299 | case OP_LEFT_SHIFT: | |
1300 | case OP_RIGHT_SHIFT: | |
1301 | case OP_BIT_AND: | |
1302 | case OP_BIT_XOR: | |
1303 | case OP_BIT_OR: | |
1304 | case OP_CONCAT: | |
1305 | case OP_SUBST: | |
1306 | case OP_TRANS: | |
1307 | case OP_ANDASSIGN: /* may work later */ | |
1308 | case OP_ORASSIGN: /* may work later */ | |
1309 | return TRUE; | |
1310 | default: | |
1311 | return FALSE; | |
1312 | } | |
1313 | } | |
1314 | ||
463ee0b2 | 1315 | OP * |
8ac85365 | 1316 | refkids(OP *o, I32 type) |
463ee0b2 LW |
1317 | { |
1318 | OP *kid; | |
11343788 MB |
1319 | if (o && o->op_flags & OPf_KIDS) { |
1320 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
463ee0b2 LW |
1321 | ref(kid, type); |
1322 | } | |
11343788 | 1323 | return o; |
463ee0b2 LW |
1324 | } |
1325 | ||
1326 | OP * | |
8ac85365 | 1327 | ref(OP *o, I32 type) |
463ee0b2 LW |
1328 | { |
1329 | OP *kid; | |
463ee0b2 | 1330 | |
11343788 MB |
1331 | if (!o || error_count) |
1332 | return o; | |
463ee0b2 | 1333 | |
11343788 | 1334 | switch (o->op_type) { |
a0d0e21e | 1335 | case OP_ENTERSUB: |
e55aaa0e | 1336 | if ((type == OP_DEFINED || type == OP_LOCK) && |
11343788 MB |
1337 | !(o->op_flags & OPf_STACKED)) { |
1338 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
1339 | o->op_ppaddr = ppaddr[OP_RV2CV]; | |
1340 | assert(cUNOPo->op_first->op_type == OP_NULL); | |
1341 | null(((LISTOP*)cUNOPo->op_first)->op_first); /* disable pushmark */ | |
1342 | o->op_flags |= OPf_SPECIAL; | |
8990e307 LW |
1343 | } |
1344 | break; | |
aeea060c | 1345 | |
463ee0b2 | 1346 | case OP_COND_EXPR: |
11343788 | 1347 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1348 | ref(kid, type); |
1349 | break; | |
8990e307 | 1350 | case OP_RV2SV: |
11343788 | 1351 | ref(cUNOPo->op_first, o->op_type); |
4633a7c4 LW |
1352 | /* FALL THROUGH */ |
1353 | case OP_PADSV: | |
5f05dabc | 1354 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1355 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1356 | : type == OP_RV2HV ? OPpDEREF_HV | |
1357 | : OPpDEREF_SV); | |
11343788 | 1358 | o->op_flags |= OPf_MOD; |
a0d0e21e | 1359 | } |
8990e307 LW |
1360 | break; |
1361 | ||
2faa37cc | 1362 | case OP_THREADSV: |
a863c7d1 MB |
1363 | o->op_flags |= OPf_MOD; /* XXX ??? */ |
1364 | break; | |
1365 | ||
463ee0b2 LW |
1366 | case OP_RV2AV: |
1367 | case OP_RV2HV: | |
aeea060c | 1368 | o->op_flags |= OPf_REF; |
8990e307 | 1369 | /* FALL THROUGH */ |
463ee0b2 | 1370 | case OP_RV2GV: |
11343788 | 1371 | ref(cUNOPo->op_first, o->op_type); |
463ee0b2 | 1372 | break; |
8990e307 | 1373 | |
463ee0b2 LW |
1374 | case OP_PADAV: |
1375 | case OP_PADHV: | |
aeea060c | 1376 | o->op_flags |= OPf_REF; |
79072805 | 1377 | break; |
aeea060c | 1378 | |
8990e307 | 1379 | case OP_SCALAR: |
79072805 | 1380 | case OP_NULL: |
11343788 | 1381 | if (!(o->op_flags & OPf_KIDS)) |
463ee0b2 | 1382 | break; |
11343788 | 1383 | ref(cBINOPo->op_first, type); |
79072805 LW |
1384 | break; |
1385 | case OP_AELEM: | |
1386 | case OP_HELEM: | |
11343788 | 1387 | ref(cBINOPo->op_first, o->op_type); |
5f05dabc | 1388 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1389 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1390 | : type == OP_RV2HV ? OPpDEREF_HV | |
1391 | : OPpDEREF_SV); | |
11343788 | 1392 | o->op_flags |= OPf_MOD; |
8990e307 | 1393 | } |
79072805 LW |
1394 | break; |
1395 | ||
463ee0b2 | 1396 | case OP_SCOPE: |
79072805 LW |
1397 | case OP_LEAVE: |
1398 | case OP_ENTER: | |
8990e307 | 1399 | case OP_LIST: |
11343788 | 1400 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1401 | break; |
11343788 | 1402 | ref(cLISTOPo->op_last, type); |
79072805 | 1403 | break; |
a0d0e21e LW |
1404 | default: |
1405 | break; | |
79072805 | 1406 | } |
11343788 | 1407 | return scalar(o); |
8990e307 | 1408 | |
79072805 LW |
1409 | } |
1410 | ||
1411 | OP * | |
8ac85365 | 1412 | my(OP *o) |
93a17b20 LW |
1413 | { |
1414 | OP *kid; | |
93a17b20 LW |
1415 | I32 type; |
1416 | ||
11343788 MB |
1417 | if (!o || error_count) |
1418 | return o; | |
93a17b20 | 1419 | |
11343788 | 1420 | type = o->op_type; |
93a17b20 | 1421 | if (type == OP_LIST) { |
11343788 | 1422 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
93a17b20 | 1423 | my(kid); |
dab48698 | 1424 | } else if (type == OP_UNDEF) { |
7766148a | 1425 | return o; |
dab48698 | 1426 | } else if (type != OP_PADSV && |
93a17b20 LW |
1427 | type != OP_PADAV && |
1428 | type != OP_PADHV && | |
1429 | type != OP_PUSHMARK) | |
1430 | { | |
5dc0d613 | 1431 | yyerror(form("Can't declare %s in my", op_desc[o->op_type])); |
11343788 | 1432 | return o; |
93a17b20 | 1433 | } |
11343788 MB |
1434 | o->op_flags |= OPf_MOD; |
1435 | o->op_private |= OPpLVAL_INTRO; | |
1436 | return o; | |
93a17b20 LW |
1437 | } |
1438 | ||
1439 | OP * | |
8ac85365 | 1440 | sawparens(OP *o) |
79072805 LW |
1441 | { |
1442 | if (o) | |
1443 | o->op_flags |= OPf_PARENS; | |
1444 | return o; | |
1445 | } | |
1446 | ||
1447 | OP * | |
8ac85365 | 1448 | bind_match(I32 type, OP *left, OP *right) |
79072805 | 1449 | { |
11343788 | 1450 | OP *o; |
79072805 | 1451 | |
2ae324a7 | 1452 | if (dowarn && |
1453 | (left->op_type == OP_RV2AV || | |
1454 | left->op_type == OP_RV2HV || | |
1455 | left->op_type == OP_PADAV || | |
1456 | left->op_type == OP_PADHV)) { | |
1457 | char *desc = op_desc[(right->op_type == OP_SUBST || | |
1458 | right->op_type == OP_TRANS) | |
1459 | ? right->op_type : OP_MATCH]; | |
1460 | char *sample = ((left->op_type == OP_RV2AV || | |
1461 | left->op_type == OP_PADAV) | |
1462 | ? "@array" : "%hash"); | |
1463 | warn("Applying %s to %s will act on scalar(%s)", desc, sample, sample); | |
1464 | } | |
1465 | ||
79072805 LW |
1466 | if (right->op_type == OP_MATCH || |
1467 | right->op_type == OP_SUBST || | |
1468 | right->op_type == OP_TRANS) { | |
1469 | right->op_flags |= OPf_STACKED; | |
1470 | if (right->op_type != OP_MATCH) | |
463ee0b2 | 1471 | left = mod(left, right->op_type); |
79072805 | 1472 | if (right->op_type == OP_TRANS) |
11343788 | 1473 | o = newBINOP(OP_NULL, OPf_STACKED, scalar(left), right); |
79072805 | 1474 | else |
11343788 | 1475 | o = prepend_elem(right->op_type, scalar(left), right); |
79072805 | 1476 | if (type == OP_NOT) |
11343788 MB |
1477 | return newUNOP(OP_NOT, 0, scalar(o)); |
1478 | return o; | |
79072805 LW |
1479 | } |
1480 | else | |
1481 | return bind_match(type, left, | |
1482 | pmruntime(newPMOP(OP_MATCH, 0), right, Nullop)); | |
1483 | } | |
1484 | ||
1485 | OP * | |
8ac85365 | 1486 | invert(OP *o) |
79072805 | 1487 | { |
11343788 MB |
1488 | if (!o) |
1489 | return o; | |
79072805 | 1490 | /* XXX need to optimize away NOT NOT here? Or do we let optimizer do it? */ |
11343788 | 1491 | return newUNOP(OP_NOT, OPf_SPECIAL, scalar(o)); |
79072805 LW |
1492 | } |
1493 | ||
1494 | OP * | |
8ac85365 | 1495 | scope(OP *o) |
79072805 LW |
1496 | { |
1497 | if (o) { | |
84902520 | 1498 | if (o->op_flags & OPf_PARENS || PERLDB_NOOPT || tainting) { |
463ee0b2 LW |
1499 | o = prepend_elem(OP_LINESEQ, newOP(OP_ENTER, 0), o); |
1500 | o->op_type = OP_LEAVE; | |
1501 | o->op_ppaddr = ppaddr[OP_LEAVE]; | |
1502 | } | |
1503 | else { | |
1504 | if (o->op_type == OP_LINESEQ) { | |
1505 | OP *kid; | |
1506 | o->op_type = OP_SCOPE; | |
1507 | o->op_ppaddr = ppaddr[OP_SCOPE]; | |
1508 | kid = ((LISTOP*)o)->op_first; | |
748a9306 LW |
1509 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE){ |
1510 | SvREFCNT_dec(((COP*)kid)->cop_filegv); | |
8990e307 | 1511 | null(kid); |
748a9306 | 1512 | } |
463ee0b2 LW |
1513 | } |
1514 | else | |
748a9306 | 1515 | o = newLISTOP(OP_SCOPE, 0, o, Nullop); |
463ee0b2 | 1516 | } |
79072805 LW |
1517 | } |
1518 | return o; | |
1519 | } | |
1520 | ||
a0d0e21e | 1521 | int |
8ac85365 | 1522 | block_start(int full) |
79072805 | 1523 | { |
11343788 | 1524 | dTHR; |
a0d0e21e | 1525 | int retval = savestack_ix; |
55497cff | 1526 | SAVEI32(comppad_name_floor); |
1527 | if (full) { | |
93965878 | 1528 | if ((comppad_name_fill = AvFILLp(comppad_name)) > 0) |
55497cff | 1529 | comppad_name_floor = comppad_name_fill; |
1530 | else | |
1531 | comppad_name_floor = 0; | |
1532 | } | |
1533 | SAVEI32(min_intro_pending); | |
1534 | SAVEI32(max_intro_pending); | |
a0d0e21e | 1535 | min_intro_pending = 0; |
55497cff | 1536 | SAVEI32(comppad_name_fill); |
1537 | SAVEI32(padix_floor); | |
a0d0e21e LW |
1538 | padix_floor = padix; |
1539 | pad_reset_pending = FALSE; | |
55497cff | 1540 | SAVEI32(hints); |
a0d0e21e LW |
1541 | hints &= ~HINT_BLOCK_SCOPE; |
1542 | return retval; | |
1543 | } | |
1544 | ||
1545 | OP* | |
8ac85365 | 1546 | block_end(I32 floor, OP *seq) |
a0d0e21e | 1547 | { |
11343788 | 1548 | dTHR; |
a0d0e21e LW |
1549 | int needblockscope = hints & HINT_BLOCK_SCOPE; |
1550 | OP* retval = scalarseq(seq); | |
a0d0e21e LW |
1551 | LEAVE_SCOPE(floor); |
1552 | pad_reset_pending = FALSE; | |
1553 | if (needblockscope) | |
1554 | hints |= HINT_BLOCK_SCOPE; /* propagate out */ | |
1555 | pad_leavemy(comppad_name_fill); | |
bbce6d69 | 1556 | cop_seqmax++; |
a0d0e21e LW |
1557 | return retval; |
1558 | } | |
1559 | ||
76e3520e | 1560 | STATIC OP * |
54b9620d MB |
1561 | newDEFSVOP(void) |
1562 | { | |
1563 | #ifdef USE_THREADS | |
1564 | OP *o = newOP(OP_THREADSV, 0); | |
1565 | o->op_targ = find_threadsv("_"); | |
1566 | return o; | |
1567 | #else | |
1568 | return newSVREF(newGVOP(OP_GV, 0, defgv)); | |
1569 | #endif /* USE_THREADS */ | |
1570 | } | |
1571 | ||
a0d0e21e | 1572 | void |
8ac85365 | 1573 | newPROG(OP *o) |
a0d0e21e | 1574 | { |
11343788 | 1575 | dTHR; |
a0d0e21e | 1576 | if (in_eval) { |
5dc0d613 | 1577 | eval_root = newUNOP(OP_LEAVEEVAL, ((in_eval & 4) ? OPf_SPECIAL : 0), o); |
a0d0e21e LW |
1578 | eval_start = linklist(eval_root); |
1579 | eval_root->op_next = 0; | |
1580 | peep(eval_start); | |
1581 | } | |
1582 | else { | |
5dc0d613 | 1583 | if (!o) |
a0d0e21e | 1584 | return; |
11343788 | 1585 | main_root = scope(sawparens(scalarvoid(o))); |
a0d0e21e LW |
1586 | curcop = &compiling; |
1587 | main_start = LINKLIST(main_root); | |
1588 | main_root->op_next = 0; | |
1589 | peep(main_start); | |
748a9306 | 1590 | compcv = 0; |
3841441e | 1591 | |
4fdae800 | 1592 | /* Register with debugger */ |
84902520 | 1593 | if (PERLDB_INTER) { |
3841441e | 1594 | CV *cv = perl_get_cv("DB::postponed", FALSE); |
3841441e CS |
1595 | if (cv) { |
1596 | dSP; | |
924508f0 | 1597 | PUSHMARK(SP); |
3841441e CS |
1598 | XPUSHs((SV*)compiling.cop_filegv); |
1599 | PUTBACK; | |
1600 | perl_call_sv((SV*)cv, G_DISCARD); | |
1601 | } | |
1602 | } | |
79072805 | 1603 | } |
79072805 LW |
1604 | } |
1605 | ||
1606 | OP * | |
8ac85365 | 1607 | localize(OP *o, I32 lex) |
79072805 LW |
1608 | { |
1609 | if (o->op_flags & OPf_PARENS) | |
1610 | list(o); | |
8990e307 | 1611 | else { |
8990e307 LW |
1612 | if (dowarn && bufptr > oldbufptr && bufptr[-1] == ',') { |
1613 | char *s; | |
1614 | for (s = bufptr; *s && (isALNUM(*s) || strchr("@$%, ",*s)); s++) ; | |
a0d0e21e | 1615 | if (*s == ';' || *s == '=') |
8990e307 LW |
1616 | warn("Parens missing around \"%s\" list", lex ? "my" : "local"); |
1617 | } | |
1618 | } | |
93a17b20 | 1619 | in_my = FALSE; |
c750a3ec | 1620 | in_my_stash = Nullhv; |
93a17b20 LW |
1621 | if (lex) |
1622 | return my(o); | |
1623 | else | |
463ee0b2 | 1624 | return mod(o, OP_NULL); /* a bit kludgey */ |
79072805 LW |
1625 | } |
1626 | ||
1627 | OP * | |
8ac85365 | 1628 | jmaybe(OP *o) |
79072805 LW |
1629 | { |
1630 | if (o->op_type == OP_LIST) { | |
554b3eca MB |
1631 | OP *o2; |
1632 | #ifdef USE_THREADS | |
2faa37cc | 1633 | o2 = newOP(OP_THREADSV, 0); |
54b9620d | 1634 | o2->op_targ = find_threadsv(";"); |
554b3eca MB |
1635 | #else |
1636 | o2 = newSVREF(newGVOP(OP_GV, 0, gv_fetchpv(";", TRUE, SVt_PV))), | |
1637 | #endif /* USE_THREADS */ | |
1638 | o = convert(OP_JOIN, 0, prepend_elem(OP_LIST, o2, o)); | |
79072805 LW |
1639 | } |
1640 | return o; | |
1641 | } | |
1642 | ||
1643 | OP * | |
8ac85365 | 1644 | fold_constants(register OP *o) |
79072805 | 1645 | { |
11343788 | 1646 | dTHR; |
79072805 LW |
1647 | register OP *curop; |
1648 | I32 type = o->op_type; | |
748a9306 | 1649 | SV *sv; |
79072805 LW |
1650 | |
1651 | if (opargs[type] & OA_RETSCALAR) | |
1652 | scalar(o); | |
1653 | if (opargs[type] & OA_TARGET) | |
ed6116ce | 1654 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 | 1655 | |
85e6fe83 | 1656 | if ((opargs[type] & OA_OTHERINT) && (hints & HINT_INTEGER)) |
a0d0e21e | 1657 | o->op_ppaddr = ppaddr[type = ++(o->op_type)]; |
85e6fe83 | 1658 | |
79072805 LW |
1659 | if (!(opargs[type] & OA_FOLDCONST)) |
1660 | goto nope; | |
1661 | ||
de939608 CS |
1662 | switch (type) { |
1663 | case OP_SPRINTF: | |
1664 | case OP_UCFIRST: | |
1665 | case OP_LCFIRST: | |
1666 | case OP_UC: | |
1667 | case OP_LC: | |
69dcf70c MB |
1668 | case OP_SLT: |
1669 | case OP_SGT: | |
1670 | case OP_SLE: | |
1671 | case OP_SGE: | |
1672 | case OP_SCMP: | |
1673 | ||
de939608 CS |
1674 | if (o->op_private & OPpLOCALE) |
1675 | goto nope; | |
1676 | } | |
1677 | ||
a0d0e21e LW |
1678 | if (error_count) |
1679 | goto nope; /* Don't try to run w/ errors */ | |
1680 | ||
79072805 | 1681 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
93a17b20 LW |
1682 | if (curop->op_type != OP_CONST && |
1683 | curop->op_type != OP_LIST && | |
1684 | curop->op_type != OP_SCALAR && | |
a0d0e21e | 1685 | curop->op_type != OP_NULL && |
93a17b20 | 1686 | curop->op_type != OP_PUSHMARK) { |
79072805 LW |
1687 | goto nope; |
1688 | } | |
1689 | } | |
1690 | ||
1691 | curop = LINKLIST(o); | |
1692 | o->op_next = 0; | |
1693 | op = curop; | |
76e3520e | 1694 | CALLRUNOPS(); |
748a9306 LW |
1695 | sv = *(stack_sp--); |
1696 | if (o->op_targ && sv == PAD_SV(o->op_targ)) /* grab pad temp? */ | |
79072805 | 1697 | pad_swipe(o->op_targ); |
748a9306 LW |
1698 | else if (SvTEMP(sv)) { /* grab mortal temp? */ |
1699 | (void)SvREFCNT_inc(sv); | |
1700 | SvTEMP_off(sv); | |
85e6fe83 | 1701 | } |
79072805 LW |
1702 | op_free(o); |
1703 | if (type == OP_RV2GV) | |
b1cb66bf | 1704 | return newGVOP(OP_GV, 0, (GV*)sv); |
748a9306 | 1705 | else { |
ee580363 GS |
1706 | /* try to smush double to int, but don't smush -2.0 to -2 */ |
1707 | if ((SvFLAGS(sv) & (SVf_IOK|SVf_NOK|SVf_POK)) == SVf_NOK && | |
1708 | type != OP_NEGATE) | |
1709 | { | |
748a9306 | 1710 | IV iv = SvIV(sv); |
ee580363 | 1711 | if ((double)iv == SvNV(sv)) { |
748a9306 LW |
1712 | SvREFCNT_dec(sv); |
1713 | sv = newSViv(iv); | |
1714 | } | |
b1cb66bf | 1715 | else |
1716 | SvIOK_off(sv); /* undo SvIV() damage */ | |
748a9306 LW |
1717 | } |
1718 | return newSVOP(OP_CONST, 0, sv); | |
1719 | } | |
aeea060c | 1720 | |
79072805 LW |
1721 | nope: |
1722 | if (!(opargs[type] & OA_OTHERINT)) | |
1723 | return o; | |
79072805 | 1724 | |
85e6fe83 | 1725 | if (!(hints & HINT_INTEGER)) { |
a0d0e21e | 1726 | if (type == OP_DIVIDE || !(o->op_flags & OPf_KIDS)) |
85e6fe83 LW |
1727 | return o; |
1728 | ||
1729 | for (curop = ((UNOP*)o)->op_first; curop; curop = curop->op_sibling) { | |
1730 | if (curop->op_type == OP_CONST) { | |
b1cb66bf | 1731 | if (SvIOK(((SVOP*)curop)->op_sv)) |
85e6fe83 LW |
1732 | continue; |
1733 | return o; | |
1734 | } | |
1735 | if (opargs[curop->op_type] & OA_RETINTEGER) | |
79072805 LW |
1736 | continue; |
1737 | return o; | |
1738 | } | |
a0d0e21e | 1739 | o->op_ppaddr = ppaddr[++(o->op_type)]; |
79072805 LW |
1740 | } |
1741 | ||
79072805 LW |
1742 | return o; |
1743 | } | |
1744 | ||
1745 | OP * | |
8ac85365 | 1746 | gen_constant_list(register OP *o) |
79072805 | 1747 | { |
11343788 | 1748 | dTHR; |
79072805 | 1749 | register OP *curop; |
79072805 | 1750 | I32 oldtmps_floor = tmps_floor; |
79072805 | 1751 | |
a0d0e21e LW |
1752 | list(o); |
1753 | if (error_count) | |
1754 | return o; /* Don't attempt to run with errors */ | |
1755 | ||
1756 | op = curop = LINKLIST(o); | |
1757 | o->op_next = 0; | |
11343788 | 1758 | pp_pushmark(ARGS); |
76e3520e | 1759 | CALLRUNOPS(); |
a0d0e21e | 1760 | op = curop; |
11343788 | 1761 | pp_anonlist(ARGS); |
79072805 | 1762 | tmps_floor = oldtmps_floor; |
79072805 LW |
1763 | |
1764 | o->op_type = OP_RV2AV; | |
1765 | o->op_ppaddr = ppaddr[OP_RV2AV]; | |
79072805 | 1766 | curop = ((UNOP*)o)->op_first; |
a0d0e21e | 1767 | ((UNOP*)o)->op_first = newSVOP(OP_CONST, 0, SvREFCNT_inc(*stack_sp--)); |
79072805 | 1768 | op_free(curop); |
79072805 LW |
1769 | linklist(o); |
1770 | return list(o); | |
1771 | } | |
1772 | ||
1773 | OP * | |
8ac85365 | 1774 | convert(I32 type, I32 flags, OP *o) |
79072805 LW |
1775 | { |
1776 | OP *kid; | |
a0d0e21e | 1777 | OP *last = 0; |
79072805 | 1778 | |
11343788 MB |
1779 | if (!o || o->op_type != OP_LIST) |
1780 | o = newLISTOP(OP_LIST, 0, o, Nullop); | |
748a9306 | 1781 | else |
5dc0d613 | 1782 | o->op_flags &= ~OPf_WANT; |
79072805 | 1783 | |
8990e307 | 1784 | if (!(opargs[type] & OA_MARK)) |
11343788 | 1785 | null(cLISTOPo->op_first); |
8990e307 | 1786 | |
11343788 MB |
1787 | o->op_type = type; |
1788 | o->op_ppaddr = ppaddr[type]; | |
1789 | o->op_flags |= flags; | |
79072805 | 1790 | |
11343788 MB |
1791 | o = CHECKOP(type, o); |
1792 | if (o->op_type != type) | |
1793 | return o; | |
79072805 | 1794 | |
11343788 | 1795 | if (cLISTOPo->op_children < 7) { |
79072805 | 1796 | /* XXX do we really need to do this if we're done appending?? */ |
11343788 | 1797 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 | 1798 | last = kid; |
11343788 | 1799 | cLISTOPo->op_last = last; /* in case check substituted last arg */ |
79072805 LW |
1800 | } |
1801 | ||
11343788 | 1802 | return fold_constants(o); |
79072805 LW |
1803 | } |
1804 | ||
1805 | /* List constructors */ | |
1806 | ||
1807 | OP * | |
8ac85365 | 1808 | append_elem(I32 type, OP *first, OP *last) |
79072805 LW |
1809 | { |
1810 | if (!first) | |
1811 | return last; | |
8990e307 LW |
1812 | |
1813 | if (!last) | |
79072805 | 1814 | return first; |
8990e307 | 1815 | |
a0d0e21e LW |
1816 | if (first->op_type != type || type==OP_LIST && first->op_flags & OPf_PARENS) |
1817 | return newLISTOP(type, 0, first, last); | |
79072805 | 1818 | |
a0d0e21e LW |
1819 | if (first->op_flags & OPf_KIDS) |
1820 | ((LISTOP*)first)->op_last->op_sibling = last; | |
1821 | else { | |
1822 | first->op_flags |= OPf_KIDS; | |
1823 | ((LISTOP*)first)->op_first = last; | |
1824 | } | |
1825 | ((LISTOP*)first)->op_last = last; | |
1826 | ((LISTOP*)first)->op_children++; | |
1827 | return first; | |
79072805 LW |
1828 | } |
1829 | ||
1830 | OP * | |
8ac85365 | 1831 | append_list(I32 type, LISTOP *first, LISTOP *last) |
79072805 LW |
1832 | { |
1833 | if (!first) | |
1834 | return (OP*)last; | |
8990e307 LW |
1835 | |
1836 | if (!last) | |
79072805 | 1837 | return (OP*)first; |
8990e307 LW |
1838 | |
1839 | if (first->op_type != type) | |
79072805 | 1840 | return prepend_elem(type, (OP*)first, (OP*)last); |
8990e307 LW |
1841 | |
1842 | if (last->op_type != type) | |
79072805 LW |
1843 | return append_elem(type, (OP*)first, (OP*)last); |
1844 | ||
1845 | first->op_last->op_sibling = last->op_first; | |
1846 | first->op_last = last->op_last; | |
1847 | first->op_children += last->op_children; | |
1848 | if (first->op_children) | |
1849 | last->op_flags |= OPf_KIDS; | |
1850 | ||
1851 | Safefree(last); | |
1852 | return (OP*)first; | |
1853 | } | |
1854 | ||
1855 | OP * | |
8ac85365 | 1856 | prepend_elem(I32 type, OP *first, OP *last) |
79072805 LW |
1857 | { |
1858 | if (!first) | |
1859 | return last; | |
8990e307 LW |
1860 | |
1861 | if (!last) | |
79072805 | 1862 | return first; |
8990e307 LW |
1863 | |
1864 | if (last->op_type == type) { | |
1865 | if (type == OP_LIST) { /* already a PUSHMARK there */ | |
1866 | first->op_sibling = ((LISTOP*)last)->op_first->op_sibling; | |
1867 | ((LISTOP*)last)->op_first->op_sibling = first; | |
1868 | } | |
1869 | else { | |
1870 | if (!(last->op_flags & OPf_KIDS)) { | |
1871 | ((LISTOP*)last)->op_last = first; | |
1872 | last->op_flags |= OPf_KIDS; | |
1873 | } | |
1874 | first->op_sibling = ((LISTOP*)last)->op_first; | |
1875 | ((LISTOP*)last)->op_first = first; | |
79072805 | 1876 | } |
79072805 LW |
1877 | ((LISTOP*)last)->op_children++; |
1878 | return last; | |
1879 | } | |
1880 | ||
1881 | return newLISTOP(type, 0, first, last); | |
1882 | } | |
1883 | ||
1884 | /* Constructors */ | |
1885 | ||
1886 | OP * | |
8ac85365 | 1887 | newNULLLIST(void) |
79072805 | 1888 | { |
8990e307 LW |
1889 | return newOP(OP_STUB, 0); |
1890 | } | |
1891 | ||
1892 | OP * | |
8ac85365 | 1893 | force_list(OP *o) |
8990e307 | 1894 | { |
11343788 MB |
1895 | if (!o || o->op_type != OP_LIST) |
1896 | o = newLISTOP(OP_LIST, 0, o, Nullop); | |
1897 | null(o); | |
1898 | return o; | |
79072805 LW |
1899 | } |
1900 | ||
1901 | OP * | |
8ac85365 | 1902 | newLISTOP(I32 type, I32 flags, OP *first, OP *last) |
79072805 LW |
1903 | { |
1904 | LISTOP *listop; | |
1905 | ||
1906 | Newz(1101, listop, 1, LISTOP); | |
1907 | ||
1908 | listop->op_type = type; | |
1909 | listop->op_ppaddr = ppaddr[type]; | |
1910 | listop->op_children = (first != 0) + (last != 0); | |
1911 | listop->op_flags = flags; | |
79072805 LW |
1912 | |
1913 | if (!last && first) | |
1914 | last = first; | |
1915 | else if (!first && last) | |
1916 | first = last; | |
8990e307 LW |
1917 | else if (first) |
1918 | first->op_sibling = last; | |
79072805 LW |
1919 | listop->op_first = first; |
1920 | listop->op_last = last; | |
8990e307 LW |
1921 | if (type == OP_LIST) { |
1922 | OP* pushop; | |
1923 | pushop = newOP(OP_PUSHMARK, 0); | |
1924 | pushop->op_sibling = first; | |
1925 | listop->op_first = pushop; | |
1926 | listop->op_flags |= OPf_KIDS; | |
1927 | if (!last) | |
1928 | listop->op_last = pushop; | |
1929 | } | |
1930 | else if (listop->op_children) | |
1931 | listop->op_flags |= OPf_KIDS; | |
79072805 LW |
1932 | |
1933 | return (OP*)listop; | |
1934 | } | |
1935 | ||
1936 | OP * | |
8ac85365 | 1937 | newOP(I32 type, I32 flags) |
79072805 | 1938 | { |
11343788 MB |
1939 | OP *o; |
1940 | Newz(1101, o, 1, OP); | |
1941 | o->op_type = type; | |
1942 | o->op_ppaddr = ppaddr[type]; | |
1943 | o->op_flags = flags; | |
79072805 | 1944 | |
11343788 MB |
1945 | o->op_next = o; |
1946 | o->op_private = 0 + (flags >> 8); | |
79072805 | 1947 | if (opargs[type] & OA_RETSCALAR) |
11343788 | 1948 | scalar(o); |
79072805 | 1949 | if (opargs[type] & OA_TARGET) |
11343788 MB |
1950 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
1951 | return CHECKOP(type, o); | |
79072805 LW |
1952 | } |
1953 | ||
1954 | OP * | |
8ac85365 | 1955 | newUNOP(I32 type, I32 flags, OP *first) |
79072805 LW |
1956 | { |
1957 | UNOP *unop; | |
1958 | ||
93a17b20 | 1959 | if (!first) |
aeea060c | 1960 | first = newOP(OP_STUB, 0); |
8990e307 LW |
1961 | if (opargs[type] & OA_MARK) |
1962 | first = force_list(first); | |
93a17b20 | 1963 | |
79072805 LW |
1964 | Newz(1101, unop, 1, UNOP); |
1965 | unop->op_type = type; | |
1966 | unop->op_ppaddr = ppaddr[type]; | |
1967 | unop->op_first = first; | |
1968 | unop->op_flags = flags | OPf_KIDS; | |
c07a80fd | 1969 | unop->op_private = 1 | (flags >> 8); |
c277df42 IZ |
1970 | #if 1 |
1971 | if(type == OP_STUDY && first->op_type == OP_MATCH) { | |
1972 | first->op_type = OP_PUSHRE; | |
1973 | first->op_ppaddr = ppaddr[OP_PUSHRE]; | |
1974 | } | |
1975 | #endif | |
e50aee73 | 1976 | unop = (UNOP*) CHECKOP(type, unop); |
79072805 LW |
1977 | if (unop->op_next) |
1978 | return (OP*)unop; | |
1979 | ||
a0d0e21e | 1980 | return fold_constants((OP *) unop); |
79072805 LW |
1981 | } |
1982 | ||
1983 | OP * | |
8ac85365 | 1984 | newBINOP(I32 type, I32 flags, OP *first, OP *last) |
79072805 LW |
1985 | { |
1986 | BINOP *binop; | |
1987 | Newz(1101, binop, 1, BINOP); | |
1988 | ||
1989 | if (!first) | |
1990 | first = newOP(OP_NULL, 0); | |
1991 | ||
1992 | binop->op_type = type; | |
1993 | binop->op_ppaddr = ppaddr[type]; | |
1994 | binop->op_first = first; | |
1995 | binop->op_flags = flags | OPf_KIDS; | |
1996 | if (!last) { | |
1997 | last = first; | |
c07a80fd | 1998 | binop->op_private = 1 | (flags >> 8); |
79072805 LW |
1999 | } |
2000 | else { | |
c07a80fd | 2001 | binop->op_private = 2 | (flags >> 8); |
79072805 LW |
2002 | first->op_sibling = last; |
2003 | } | |
2004 | ||
e50aee73 | 2005 | binop = (BINOP*)CHECKOP(type, binop); |
79072805 LW |
2006 | if (binop->op_next) |
2007 | return (OP*)binop; | |
2008 | ||
2009 | binop->op_last = last = binop->op_first->op_sibling; | |
2010 | ||
a0d0e21e | 2011 | return fold_constants((OP *)binop); |
79072805 LW |
2012 | } |
2013 | ||
2014 | OP * | |
8ac85365 | 2015 | pmtrans(OP *o, OP *expr, OP *repl) |
79072805 | 2016 | { |
79072805 LW |
2017 | SV *tstr = ((SVOP*)expr)->op_sv; |
2018 | SV *rstr = ((SVOP*)repl)->op_sv; | |
463ee0b2 LW |
2019 | STRLEN tlen; |
2020 | STRLEN rlen; | |
ec49126f | 2021 | register U8 *t = (U8*)SvPV(tstr, tlen); |
2022 | register U8 *r = (U8*)SvPV(rstr, rlen); | |
79072805 LW |
2023 | register I32 i; |
2024 | register I32 j; | |
8ac85365 | 2025 | I32 Delete; |
79072805 | 2026 | I32 complement; |
5d06d08e | 2027 | I32 squash; |
79072805 LW |
2028 | register short *tbl; |
2029 | ||
11343788 MB |
2030 | tbl = (short*)cPVOPo->op_pv; |
2031 | complement = o->op_private & OPpTRANS_COMPLEMENT; | |
8ac85365 | 2032 | Delete = o->op_private & OPpTRANS_DELETE; |
5d06d08e | 2033 | squash = o->op_private & OPpTRANS_SQUASH; |
79072805 LW |
2034 | |
2035 | if (complement) { | |
2036 | Zero(tbl, 256, short); | |
2037 | for (i = 0; i < tlen; i++) | |
ec49126f | 2038 | tbl[t[i]] = -1; |
79072805 LW |
2039 | for (i = 0, j = 0; i < 256; i++) { |
2040 | if (!tbl[i]) { | |
2041 | if (j >= rlen) { | |
8ac85365 | 2042 | if (Delete) |
79072805 LW |
2043 | tbl[i] = -2; |
2044 | else if (rlen) | |
ec49126f | 2045 | tbl[i] = r[j-1]; |
79072805 LW |
2046 | else |
2047 | tbl[i] = i; | |
2048 | } | |
2049 | else | |
ec49126f | 2050 | tbl[i] = r[j++]; |
79072805 LW |
2051 | } |
2052 | } | |
2053 | } | |
2054 | else { | |
8ac85365 | 2055 | if (!rlen && !Delete) { |
79072805 | 2056 | r = t; rlen = tlen; |
5d06d08e MB |
2057 | if (!squash) |
2058 | o->op_private |= OPpTRANS_COUNTONLY; | |
79072805 LW |
2059 | } |
2060 | for (i = 0; i < 256; i++) | |
2061 | tbl[i] = -1; | |
2062 | for (i = 0, j = 0; i < tlen; i++,j++) { | |
2063 | if (j >= rlen) { | |
8ac85365 | 2064 | if (Delete) { |
ec49126f | 2065 | if (tbl[t[i]] == -1) |
2066 | tbl[t[i]] = -2; | |
79072805 LW |
2067 | continue; |
2068 | } | |
2069 | --j; | |
2070 | } | |
ec49126f | 2071 | if (tbl[t[i]] == -1) |
2072 | tbl[t[i]] = r[j]; | |
79072805 LW |
2073 | } |
2074 | } | |
2075 | op_free(expr); | |
2076 | op_free(repl); | |
2077 | ||
11343788 | 2078 | return o; |
79072805 LW |
2079 | } |
2080 | ||
2081 | OP * | |
8ac85365 | 2082 | newPMOP(I32 type, I32 flags) |
79072805 | 2083 | { |
11343788 | 2084 | dTHR; |
79072805 LW |
2085 | PMOP *pmop; |
2086 | ||
2087 | Newz(1101, pmop, 1, PMOP); | |
2088 | pmop->op_type = type; | |
2089 | pmop->op_ppaddr = ppaddr[type]; | |
2090 | pmop->op_flags = flags; | |
c07a80fd | 2091 | pmop->op_private = 0 | (flags >> 8); |
79072805 | 2092 | |
36477c24 | 2093 | if (hints & HINT_LOCALE) |
2094 | pmop->op_pmpermflags = (pmop->op_pmflags |= PMf_LOCALE); | |
2095 | ||
79072805 | 2096 | /* link into pm list */ |
a0d0e21e | 2097 | if (type != OP_TRANS && curstash) { |
79072805 LW |
2098 | pmop->op_pmnext = HvPMROOT(curstash); |
2099 | HvPMROOT(curstash) = pmop; | |
2100 | } | |
2101 | ||
2102 | return (OP*)pmop; | |
2103 | } | |
2104 | ||
2105 | OP * | |
8ac85365 | 2106 | pmruntime(OP *o, OP *expr, OP *repl) |
79072805 LW |
2107 | { |
2108 | PMOP *pm; | |
2109 | LOGOP *rcop; | |
ce862d02 | 2110 | I32 repl_has_vars = 0; |
79072805 | 2111 | |
11343788 MB |
2112 | if (o->op_type == OP_TRANS) |
2113 | return pmtrans(o, expr, repl); | |
79072805 | 2114 | |
3e3baf6d | 2115 | hints |= HINT_BLOCK_SCOPE; |
11343788 | 2116 | pm = (PMOP*)o; |
79072805 LW |
2117 | |
2118 | if (expr->op_type == OP_CONST) { | |
463ee0b2 | 2119 | STRLEN plen; |
79072805 | 2120 | SV *pat = ((SVOP*)expr)->op_sv; |
463ee0b2 | 2121 | char *p = SvPV(pat, plen); |
11343788 | 2122 | if ((o->op_flags & OPf_SPECIAL) && strEQ(p, " ")) { |
93a17b20 | 2123 | sv_setpvn(pat, "\\s+", 3); |
463ee0b2 | 2124 | p = SvPV(pat, plen); |
79072805 LW |
2125 | pm->op_pmflags |= PMf_SKIPWHITE; |
2126 | } | |
e50aee73 | 2127 | pm->op_pmregexp = pregcomp(p, p + plen, pm); |
aeea060c | 2128 | if (strEQ("\\s+", pm->op_pmregexp->precomp)) |
85e6fe83 | 2129 | pm->op_pmflags |= PMf_WHITE; |
79072805 LW |
2130 | op_free(expr); |
2131 | } | |
2132 | else { | |
463ee0b2 LW |
2133 | if (pm->op_pmflags & PMf_KEEP) |
2134 | expr = newUNOP(OP_REGCMAYBE,0,expr); | |
2135 | ||
79072805 LW |
2136 | Newz(1101, rcop, 1, LOGOP); |
2137 | rcop->op_type = OP_REGCOMP; | |
2138 | rcop->op_ppaddr = ppaddr[OP_REGCOMP]; | |
2139 | rcop->op_first = scalar(expr); | |
2140 | rcop->op_flags |= OPf_KIDS; | |
2141 | rcop->op_private = 1; | |
11343788 | 2142 | rcop->op_other = o; |
79072805 LW |
2143 | |
2144 | /* establish postfix order */ | |
463ee0b2 LW |
2145 | if (pm->op_pmflags & PMf_KEEP) { |
2146 | LINKLIST(expr); | |
2147 | rcop->op_next = expr; | |
2148 | ((UNOP*)expr)->op_first->op_next = (OP*)rcop; | |
2149 | } | |
2150 | else { | |
2151 | rcop->op_next = LINKLIST(expr); | |
2152 | expr->op_next = (OP*)rcop; | |
2153 | } | |
79072805 | 2154 | |
11343788 | 2155 | prepend_elem(o->op_type, scalar((OP*)rcop), o); |
79072805 LW |
2156 | } |
2157 | ||
2158 | if (repl) { | |
748a9306 LW |
2159 | OP *curop; |
2160 | if (pm->op_pmflags & PMf_EVAL) | |
2161 | curop = 0; | |
554b3eca | 2162 | #ifdef USE_THREADS |
2faa37cc | 2163 | else if (repl->op_type == OP_THREADSV |
554b3eca | 2164 | && strchr("&`'123456789+", |
54b9620d | 2165 | threadsv_names[repl->op_targ])) |
554b3eca MB |
2166 | { |
2167 | curop = 0; | |
2168 | } | |
2169 | #endif /* USE_THREADS */ | |
748a9306 LW |
2170 | else if (repl->op_type == OP_CONST) |
2171 | curop = repl; | |
79072805 | 2172 | else { |
79072805 LW |
2173 | OP *lastop = 0; |
2174 | for (curop = LINKLIST(repl); curop!=repl; curop = LINKLIST(curop)) { | |
2175 | if (opargs[curop->op_type] & OA_DANGEROUS) { | |
554b3eca | 2176 | #ifdef USE_THREADS |
ce862d02 IZ |
2177 | if (curop->op_type == OP_THREADSV) { |
2178 | repl_has_vars = 1; | |
be949f6f | 2179 | if (strchr("&`'123456789+", curop->op_private)) |
ce862d02 | 2180 | break; |
554b3eca MB |
2181 | } |
2182 | #else | |
79072805 LW |
2183 | if (curop->op_type == OP_GV) { |
2184 | GV *gv = ((GVOP*)curop)->op_gv; | |
ce862d02 | 2185 | repl_has_vars = 1; |
93a17b20 | 2186 | if (strchr("&`'123456789+", *GvENAME(gv))) |
79072805 LW |
2187 | break; |
2188 | } | |
554b3eca | 2189 | #endif /* USE_THREADS */ |
79072805 LW |
2190 | else if (curop->op_type == OP_RV2CV) |
2191 | break; | |
2192 | else if (curop->op_type == OP_RV2SV || | |
2193 | curop->op_type == OP_RV2AV || | |
2194 | curop->op_type == OP_RV2HV || | |
2195 | curop->op_type == OP_RV2GV) { | |
2196 | if (lastop && lastop->op_type != OP_GV) /*funny deref?*/ | |
2197 | break; | |
2198 | } | |
748a9306 LW |
2199 | else if (curop->op_type == OP_PADSV || |
2200 | curop->op_type == OP_PADAV || | |
2201 | curop->op_type == OP_PADHV || | |
554b3eca | 2202 | curop->op_type == OP_PADANY) { |
ce862d02 | 2203 | repl_has_vars = 1; |
748a9306 | 2204 | } |
79072805 LW |
2205 | else |
2206 | break; | |
2207 | } | |
2208 | lastop = curop; | |
2209 | } | |
748a9306 | 2210 | } |
ce862d02 IZ |
2211 | if (curop == repl |
2212 | && !(repl_has_vars | |
2213 | && (!pm->op_pmregexp | |
2214 | || pm->op_pmregexp->reganch & ROPT_EVAL_SEEN))) { | |
748a9306 | 2215 | pm->op_pmflags |= PMf_CONST; /* const for long enough */ |
4633a7c4 | 2216 | pm->op_pmpermflags |= PMf_CONST; /* const for long enough */ |
11343788 | 2217 | prepend_elem(o->op_type, scalar(repl), o); |
748a9306 LW |
2218 | } |
2219 | else { | |
ce862d02 IZ |
2220 | if (curop == repl && !pm->op_pmregexp) { /* Has variables. */ |
2221 | pm->op_pmflags |= PMf_MAYBE_CONST; | |
2222 | pm->op_pmpermflags |= PMf_MAYBE_CONST; | |
2223 | } | |
748a9306 LW |
2224 | Newz(1101, rcop, 1, LOGOP); |
2225 | rcop->op_type = OP_SUBSTCONT; | |
2226 | rcop->op_ppaddr = ppaddr[OP_SUBSTCONT]; | |
2227 | rcop->op_first = scalar(repl); | |
2228 | rcop->op_flags |= OPf_KIDS; | |
2229 | rcop->op_private = 1; | |
11343788 | 2230 | rcop->op_other = o; |
748a9306 LW |
2231 | |
2232 | /* establish postfix order */ | |
2233 | rcop->op_next = LINKLIST(repl); | |
2234 | repl->op_next = (OP*)rcop; | |
2235 | ||
2236 | pm->op_pmreplroot = scalar((OP*)rcop); | |
2237 | pm->op_pmreplstart = LINKLIST(rcop); | |
2238 | rcop->op_next = 0; | |
79072805 LW |
2239 | } |
2240 | } | |
2241 | ||
2242 | return (OP*)pm; | |
2243 | } | |
2244 | ||
2245 | OP * | |
8ac85365 | 2246 | newSVOP(I32 type, I32 flags, SV *sv) |
79072805 LW |
2247 | { |
2248 | SVOP *svop; | |
2249 | Newz(1101, svop, 1, SVOP); | |
2250 | svop->op_type = type; | |
2251 | svop->op_ppaddr = ppaddr[type]; | |
2252 | svop->op_sv = sv; | |
2253 | svop->op_next = (OP*)svop; | |
2254 | svop->op_flags = flags; | |
2255 | if (opargs[type] & OA_RETSCALAR) | |
463ee0b2 | 2256 | scalar((OP*)svop); |
79072805 | 2257 | if (opargs[type] & OA_TARGET) |
ed6116ce | 2258 | svop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2259 | return CHECKOP(type, svop); |
79072805 LW |
2260 | } |
2261 | ||
2262 | OP * | |
8ac85365 | 2263 | newGVOP(I32 type, I32 flags, GV *gv) |
79072805 | 2264 | { |
11343788 | 2265 | dTHR; |
79072805 LW |
2266 | GVOP *gvop; |
2267 | Newz(1101, gvop, 1, GVOP); | |
2268 | gvop->op_type = type; | |
2269 | gvop->op_ppaddr = ppaddr[type]; | |
8990e307 | 2270 | gvop->op_gv = (GV*)SvREFCNT_inc(gv); |
79072805 LW |
2271 | gvop->op_next = (OP*)gvop; |
2272 | gvop->op_flags = flags; | |
2273 | if (opargs[type] & OA_RETSCALAR) | |
463ee0b2 | 2274 | scalar((OP*)gvop); |
79072805 | 2275 | if (opargs[type] & OA_TARGET) |
ed6116ce | 2276 | gvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2277 | return CHECKOP(type, gvop); |
79072805 LW |
2278 | } |
2279 | ||
2280 | OP * | |
8ac85365 | 2281 | newPVOP(I32 type, I32 flags, char *pv) |
79072805 LW |
2282 | { |
2283 | PVOP *pvop; | |
2284 | Newz(1101, pvop, 1, PVOP); | |
2285 | pvop->op_type = type; | |
2286 | pvop->op_ppaddr = ppaddr[type]; | |
2287 | pvop->op_pv = pv; | |
2288 | pvop->op_next = (OP*)pvop; | |
2289 | pvop->op_flags = flags; | |
2290 | if (opargs[type] & OA_RETSCALAR) | |
463ee0b2 | 2291 | scalar((OP*)pvop); |
79072805 | 2292 | if (opargs[type] & OA_TARGET) |
ed6116ce | 2293 | pvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2294 | return CHECKOP(type, pvop); |
79072805 LW |
2295 | } |
2296 | ||
79072805 | 2297 | void |
8ac85365 | 2298 | package(OP *o) |
79072805 | 2299 | { |
11343788 | 2300 | dTHR; |
93a17b20 | 2301 | SV *sv; |
79072805 LW |
2302 | |
2303 | save_hptr(&curstash); | |
2304 | save_item(curstname); | |
11343788 | 2305 | if (o) { |
463ee0b2 LW |
2306 | STRLEN len; |
2307 | char *name; | |
11343788 | 2308 | sv = cSVOPo->op_sv; |
463ee0b2 | 2309 | name = SvPV(sv, len); |
b1cb66bf | 2310 | curstash = gv_stashpvn(name,len,TRUE); |
463ee0b2 | 2311 | sv_setpvn(curstname, name, len); |
11343788 | 2312 | op_free(o); |
93a17b20 LW |
2313 | } |
2314 | else { | |
2315 | sv_setpv(curstname,"<none>"); | |
2316 | curstash = Nullhv; | |
2317 | } | |
79072805 | 2318 | copline = NOLINE; |
8990e307 | 2319 | expect = XSTATE; |
79072805 LW |
2320 | } |
2321 | ||
85e6fe83 | 2322 | void |
8ac85365 | 2323 | utilize(int aver, I32 floor, OP *version, OP *id, OP *arg) |
85e6fe83 | 2324 | { |
a0d0e21e LW |
2325 | OP *pack; |
2326 | OP *meth; | |
2327 | OP *rqop; | |
2328 | OP *imop; | |
b1cb66bf | 2329 | OP *veop; |
85e6fe83 | 2330 | |
a0d0e21e LW |
2331 | if (id->op_type != OP_CONST) |
2332 | croak("Module name must be constant"); | |
85e6fe83 | 2333 | |
b1cb66bf | 2334 | veop = Nullop; |
2335 | ||
2336 | if(version != Nullop) { | |
2337 | SV *vesv = ((SVOP*)version)->op_sv; | |
2338 | ||
2339 | if (arg == Nullop && !SvNIOK(vesv)) { | |
2340 | arg = version; | |
2341 | } | |
2342 | else { | |
2343 | OP *pack; | |
2344 | OP *meth; | |
2345 | ||
2346 | if (version->op_type != OP_CONST || !SvNIOK(vesv)) | |
2347 | croak("Version number must be constant number"); | |
2348 | ||
2349 | /* Make copy of id so we don't free it twice */ | |
2350 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); | |
2351 | ||
2352 | /* Fake up a method call to VERSION */ | |
2353 | meth = newSVOP(OP_CONST, 0, newSVpv("VERSION", 7)); | |
2354 | veop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, | |
2355 | append_elem(OP_LIST, | |
2356 | prepend_elem(OP_LIST, pack, list(version)), | |
2357 | newUNOP(OP_METHOD, 0, meth))); | |
2358 | } | |
2359 | } | |
aeea060c | 2360 | |
a0d0e21e | 2361 | /* Fake up an import/unimport */ |
4633a7c4 LW |
2362 | if (arg && arg->op_type == OP_STUB) |
2363 | imop = arg; /* no import on explicit () */ | |
b1cb66bf | 2364 | else if(SvNIOK(((SVOP*)id)->op_sv)) { |
2365 | imop = Nullop; /* use 5.0; */ | |
2366 | } | |
4633a7c4 LW |
2367 | else { |
2368 | /* Make copy of id so we don't free it twice */ | |
2369 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); | |
4633a7c4 LW |
2370 | meth = newSVOP(OP_CONST, 0, |
2371 | aver | |
2372 | ? newSVpv("import", 6) | |
2373 | : newSVpv("unimport", 8) | |
2374 | ); | |
2375 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, | |
a0d0e21e LW |
2376 | append_elem(OP_LIST, |
2377 | prepend_elem(OP_LIST, pack, list(arg)), | |
2378 | newUNOP(OP_METHOD, 0, meth))); | |
4633a7c4 LW |
2379 | } |
2380 | ||
2381 | /* Fake up a require */ | |
2382 | rqop = newUNOP(OP_REQUIRE, 0, id); | |
a0d0e21e LW |
2383 | |
2384 | /* Fake up the BEGIN {}, which does its thing immediately. */ | |
c07a80fd | 2385 | newSUB(floor, |
a0d0e21e | 2386 | newSVOP(OP_CONST, 0, newSVpv("BEGIN", 5)), |
4633a7c4 | 2387 | Nullop, |
a0d0e21e | 2388 | append_elem(OP_LINESEQ, |
b1cb66bf | 2389 | append_elem(OP_LINESEQ, |
2390 | newSTATEOP(0, Nullch, rqop), | |
2391 | newSTATEOP(0, Nullch, veop)), | |
a0d0e21e | 2392 | newSTATEOP(0, Nullch, imop) )); |
85e6fe83 | 2393 | |
85e6fe83 LW |
2394 | copline = NOLINE; |
2395 | expect = XSTATE; | |
2396 | } | |
2397 | ||
79072805 | 2398 | OP * |
8ac85365 | 2399 | newSLICEOP(I32 flags, OP *subscript, OP *listval) |
79072805 LW |
2400 | { |
2401 | return newBINOP(OP_LSLICE, flags, | |
8990e307 LW |
2402 | list(force_list(subscript)), |
2403 | list(force_list(listval)) ); | |
79072805 LW |
2404 | } |
2405 | ||
76e3520e | 2406 | STATIC I32 |
8ac85365 | 2407 | list_assignment(register OP *o) |
79072805 | 2408 | { |
11343788 | 2409 | if (!o) |
79072805 LW |
2410 | return TRUE; |
2411 | ||
11343788 MB |
2412 | if (o->op_type == OP_NULL && o->op_flags & OPf_KIDS) |
2413 | o = cUNOPo->op_first; | |
79072805 | 2414 | |
11343788 MB |
2415 | if (o->op_type == OP_COND_EXPR) { |
2416 | I32 t = list_assignment(cCONDOPo->op_first->op_sibling); | |
2417 | I32 f = list_assignment(cCONDOPo->op_first->op_sibling->op_sibling); | |
79072805 LW |
2418 | |
2419 | if (t && f) | |
2420 | return TRUE; | |
2421 | if (t || f) | |
2422 | yyerror("Assignment to both a list and a scalar"); | |
2423 | return FALSE; | |
2424 | } | |
2425 | ||
11343788 MB |
2426 | if (o->op_type == OP_LIST || o->op_flags & OPf_PARENS || |
2427 | o->op_type == OP_RV2AV || o->op_type == OP_RV2HV || | |
2428 | o->op_type == OP_ASLICE || o->op_type == OP_HSLICE) | |
79072805 LW |
2429 | return TRUE; |
2430 | ||
11343788 | 2431 | if (o->op_type == OP_PADAV || o->op_type == OP_PADHV) |
93a17b20 LW |
2432 | return TRUE; |
2433 | ||
11343788 | 2434 | if (o->op_type == OP_RV2SV) |
79072805 LW |
2435 | return FALSE; |
2436 | ||
2437 | return FALSE; | |
2438 | } | |
2439 | ||
2440 | OP * | |
8ac85365 | 2441 | newASSIGNOP(I32 flags, OP *left, I32 optype, OP *right) |
79072805 | 2442 | { |
11343788 | 2443 | OP *o; |
79072805 | 2444 | |
a0d0e21e LW |
2445 | if (optype) { |
2446 | if (optype == OP_ANDASSIGN || optype == OP_ORASSIGN) { | |
2447 | return newLOGOP(optype, 0, | |
2448 | mod(scalar(left), optype), | |
2449 | newUNOP(OP_SASSIGN, 0, scalar(right))); | |
2450 | } | |
2451 | else { | |
2452 | return newBINOP(optype, OPf_STACKED, | |
2453 | mod(scalar(left), optype), scalar(right)); | |
2454 | } | |
2455 | } | |
2456 | ||
79072805 | 2457 | if (list_assignment(left)) { |
6ee623d5 | 2458 | dTHR; |
463ee0b2 | 2459 | modcount = 0; |
748a9306 | 2460 | eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ |
463ee0b2 | 2461 | left = mod(left, OP_AASSIGN); |
748a9306 LW |
2462 | if (eval_start) |
2463 | eval_start = 0; | |
2464 | else { | |
a0d0e21e LW |
2465 | op_free(left); |
2466 | op_free(right); | |
2467 | return Nullop; | |
2468 | } | |
11343788 | 2469 | o = newBINOP(OP_AASSIGN, flags, |
8990e307 LW |
2470 | list(force_list(right)), |
2471 | list(force_list(left)) ); | |
11343788 | 2472 | o->op_private = 0 | (flags >> 8); |
a0d0e21e | 2473 | if (!(left->op_private & OPpLVAL_INTRO)) { |
79072805 | 2474 | OP *curop; |
11343788 | 2475 | OP *lastop = o; |
79072805 | 2476 | generation++; |
11343788 | 2477 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
79072805 LW |
2478 | if (opargs[curop->op_type] & OA_DANGEROUS) { |
2479 | if (curop->op_type == OP_GV) { | |
2480 | GV *gv = ((GVOP*)curop)->op_gv; | |
2481 | if (gv == defgv || SvCUR(gv) == generation) | |
2482 | break; | |
2483 | SvCUR(gv) = generation; | |
2484 | } | |
748a9306 LW |
2485 | else if (curop->op_type == OP_PADSV || |
2486 | curop->op_type == OP_PADAV || | |
2487 | curop->op_type == OP_PADHV || | |
2488 | curop->op_type == OP_PADANY) { | |
2489 | SV **svp = AvARRAY(comppad_name); | |
8e07c86e | 2490 | SV *sv = svp[curop->op_targ]; |
748a9306 LW |
2491 | if (SvCUR(sv) == generation) |
2492 | break; | |
2493 | SvCUR(sv) = generation; /* (SvCUR not used any more) */ | |
2494 | } | |
79072805 LW |
2495 | else if (curop->op_type == OP_RV2CV) |
2496 | break; | |
2497 | else if (curop->op_type == OP_RV2SV || | |
2498 | curop->op_type == OP_RV2AV || | |
2499 | curop->op_type == OP_RV2HV || | |
2500 | curop->op_type == OP_RV2GV) { | |
2501 | if (lastop->op_type != OP_GV) /* funny deref? */ | |
2502 | break; | |
2503 | } | |
2504 | else | |
2505 | break; | |
2506 | } | |
2507 | lastop = curop; | |
2508 | } | |
11343788 MB |
2509 | if (curop != o) |
2510 | o->op_private = OPpASSIGN_COMMON; | |
79072805 | 2511 | } |
c07a80fd | 2512 | if (right && right->op_type == OP_SPLIT) { |
2513 | OP* tmpop; | |
2514 | if ((tmpop = ((LISTOP*)right)->op_first) && | |
2515 | tmpop->op_type == OP_PUSHRE) | |
2516 | { | |
2517 | PMOP *pm = (PMOP*)tmpop; | |
2518 | if (left->op_type == OP_RV2AV && | |
2519 | !(left->op_private & OPpLVAL_INTRO) && | |
11343788 | 2520 | !(o->op_private & OPpASSIGN_COMMON) ) |
c07a80fd | 2521 | { |
2522 | tmpop = ((UNOP*)left)->op_first; | |
2523 | if (tmpop->op_type == OP_GV && !pm->op_pmreplroot) { | |
2524 | pm->op_pmreplroot = (OP*)((GVOP*)tmpop)->op_gv; | |
2525 | pm->op_pmflags |= PMf_ONCE; | |
11343788 | 2526 | tmpop = cUNOPo->op_first; /* to list (nulled) */ |
c07a80fd | 2527 | tmpop = ((UNOP*)tmpop)->op_first; /* to pushmark */ |
2528 | tmpop->op_sibling = Nullop; /* don't free split */ | |
2529 | right->op_next = tmpop->op_next; /* fix starting loc */ | |
11343788 | 2530 | op_free(o); /* blow off assign */ |
54310121 | 2531 | right->op_flags &= ~OPf_WANT; |
a5f75d66 | 2532 | /* "I don't know and I don't care." */ |
c07a80fd | 2533 | return right; |
2534 | } | |
2535 | } | |
2536 | else { | |
2537 | if (modcount < 10000 && | |
2538 | ((LISTOP*)right)->op_last->op_type == OP_CONST) | |
2539 | { | |
2540 | SV *sv = ((SVOP*)((LISTOP*)right)->op_last)->op_sv; | |
2541 | if (SvIVX(sv) == 0) | |
2542 | sv_setiv(sv, modcount+1); | |
2543 | } | |
2544 | } | |
2545 | } | |
2546 | } | |
11343788 | 2547 | return o; |
79072805 LW |
2548 | } |
2549 | if (!right) | |
2550 | right = newOP(OP_UNDEF, 0); | |
2551 | if (right->op_type == OP_READLINE) { | |
2552 | right->op_flags |= OPf_STACKED; | |
463ee0b2 | 2553 | return newBINOP(OP_NULL, flags, mod(scalar(left), OP_SASSIGN), scalar(right)); |
79072805 | 2554 | } |
a0d0e21e | 2555 | else { |
748a9306 | 2556 | eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ |
11343788 | 2557 | o = newBINOP(OP_SASSIGN, flags, |
463ee0b2 | 2558 | scalar(right), mod(scalar(left), OP_SASSIGN) ); |
748a9306 LW |
2559 | if (eval_start) |
2560 | eval_start = 0; | |
2561 | else { | |
11343788 | 2562 | op_free(o); |
a0d0e21e LW |
2563 | return Nullop; |
2564 | } | |
2565 | } | |
11343788 | 2566 | return o; |
79072805 LW |
2567 | } |
2568 | ||
2569 | OP * | |
8ac85365 | 2570 | newSTATEOP(I32 flags, char *label, OP *o) |
79072805 | 2571 | { |
11343788 | 2572 | dTHR; |
bbce6d69 | 2573 | U32 seq = intro_my(); |
79072805 LW |
2574 | register COP *cop; |
2575 | ||
2576 | Newz(1101, cop, 1, COP); | |
84902520 | 2577 | if (PERLDB_LINE && curcop->cop_line && curstash != debstash) { |
8990e307 LW |
2578 | cop->op_type = OP_DBSTATE; |
2579 | cop->op_ppaddr = ppaddr[ OP_DBSTATE ]; | |
2580 | } | |
2581 | else { | |
2582 | cop->op_type = OP_NEXTSTATE; | |
2583 | cop->op_ppaddr = ppaddr[ OP_NEXTSTATE ]; | |
2584 | } | |
79072805 | 2585 | cop->op_flags = flags; |
c07a80fd | 2586 | cop->op_private = 0 | (flags >> 8); |
ff0cee69 | 2587 | #ifdef NATIVE_HINTS |
2588 | cop->op_private |= NATIVE_HINTS; | |
2589 | #endif | |
79072805 LW |
2590 | cop->op_next = (OP*)cop; |
2591 | ||
463ee0b2 LW |
2592 | if (label) { |
2593 | cop->cop_label = label; | |
85e6fe83 | 2594 | hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 2595 | } |
bbce6d69 | 2596 | cop->cop_seq = seq; |
a0d0e21e | 2597 | cop->cop_arybase = curcop->cop_arybase; |
79072805 LW |
2598 | |
2599 | if (copline == NOLINE) | |
2600 | cop->cop_line = curcop->cop_line; | |
2601 | else { | |
2602 | cop->cop_line = copline; | |
2603 | copline = NOLINE; | |
2604 | } | |
44a8e56a | 2605 | cop->cop_filegv = (GV*)SvREFCNT_inc(curcop->cop_filegv); |
79072805 LW |
2606 | cop->cop_stash = curstash; |
2607 | ||
84902520 | 2608 | if (PERLDB_LINE && curstash != debstash) { |
93a17b20 LW |
2609 | SV **svp = av_fetch(GvAV(curcop->cop_filegv),(I32)cop->cop_line, FALSE); |
2610 | if (svp && *svp != &sv_undef && !SvIOK(*svp)) { | |
a0d0e21e | 2611 | (void)SvIOK_on(*svp); |
a5f75d66 | 2612 | SvIVX(*svp) = 1; |
93a17b20 LW |
2613 | SvSTASH(*svp) = (HV*)cop; |
2614 | } | |
2615 | } | |
2616 | ||
11343788 | 2617 | return prepend_elem(OP_LINESEQ, (OP*)cop, o); |
79072805 LW |
2618 | } |
2619 | ||
bbce6d69 | 2620 | /* "Introduce" my variables to visible status. */ |
2621 | U32 | |
8ac85365 | 2622 | intro_my(void) |
bbce6d69 | 2623 | { |
2624 | SV **svp; | |
2625 | SV *sv; | |
2626 | I32 i; | |
2627 | ||
2628 | if (! min_intro_pending) | |
2629 | return cop_seqmax; | |
2630 | ||
2631 | svp = AvARRAY(comppad_name); | |
2632 | for (i = min_intro_pending; i <= max_intro_pending; i++) { | |
2633 | if ((sv = svp[i]) && sv != &sv_undef && !SvIVX(sv)) { | |
2634 | SvIVX(sv) = 999999999; /* Don't know scope end yet. */ | |
2635 | SvNVX(sv) = (double)cop_seqmax; | |
2636 | } | |
2637 | } | |
2638 | min_intro_pending = 0; | |
2639 | comppad_name_fill = max_intro_pending; /* Needn't search higher */ | |
2640 | return cop_seqmax++; | |
2641 | } | |
2642 | ||
79072805 | 2643 | OP * |
8ac85365 | 2644 | newLOGOP(I32 type, I32 flags, OP *first, OP *other) |
79072805 | 2645 | { |
883ffac3 CS |
2646 | return new_logop(type, flags, &first, &other); |
2647 | } | |
2648 | ||
3bd495df | 2649 | STATIC OP * |
883ffac3 CS |
2650 | new_logop(I32 type, I32 flags, OP** firstp, OP** otherp) |
2651 | { | |
11343788 | 2652 | dTHR; |
79072805 | 2653 | LOGOP *logop; |
11343788 | 2654 | OP *o; |
883ffac3 CS |
2655 | OP *first = *firstp; |
2656 | OP *other = *otherp; | |
79072805 | 2657 | |
a0d0e21e LW |
2658 | if (type == OP_XOR) /* Not short circuit, but here by precedence. */ |
2659 | return newBINOP(type, flags, scalar(first), scalar(other)); | |
2660 | ||
8990e307 | 2661 | scalarboolean(first); |
79072805 LW |
2662 | /* optimize "!a && b" to "a || b", and "!a || b" to "a && b" */ |
2663 | if (first->op_type == OP_NOT && (first->op_flags & OPf_SPECIAL)) { | |
2664 | if (type == OP_AND || type == OP_OR) { | |
2665 | if (type == OP_AND) | |
2666 | type = OP_OR; | |
2667 | else | |
2668 | type = OP_AND; | |
11343788 | 2669 | o = first; |
883ffac3 | 2670 | first = *firstp = cUNOPo->op_first; |
11343788 MB |
2671 | if (o->op_next) |
2672 | first->op_next = o->op_next; | |
2673 | cUNOPo->op_first = Nullop; | |
2674 | op_free(o); | |
79072805 LW |
2675 | } |
2676 | } | |
2677 | if (first->op_type == OP_CONST) { | |
93a17b20 | 2678 | if (dowarn && (first->op_private & OPpCONST_BARE)) |
c07a80fd | 2679 | warn("Probable precedence problem on %s", op_desc[type]); |
79072805 LW |
2680 | if ((type == OP_AND) == (SvTRUE(((SVOP*)first)->op_sv))) { |
2681 | op_free(first); | |
883ffac3 | 2682 | *firstp = Nullop; |
79072805 LW |
2683 | return other; |
2684 | } | |
2685 | else { | |
2686 | op_free(other); | |
883ffac3 | 2687 | *otherp = Nullop; |
79072805 LW |
2688 | return first; |
2689 | } | |
2690 | } | |
2691 | else if (first->op_type == OP_WANTARRAY) { | |
2692 | if (type == OP_AND) | |
2693 | list(other); | |
2694 | else | |
2695 | scalar(other); | |
2696 | } | |
a6006777 | 2697 | else if (dowarn && (first->op_flags & OPf_KIDS)) { |
2698 | OP *k1 = ((UNOP*)first)->op_first; | |
2699 | OP *k2 = k1->op_sibling; | |
2700 | OPCODE warnop = 0; | |
2701 | switch (first->op_type) | |
2702 | { | |
2703 | case OP_NULL: | |
2704 | if (k2 && k2->op_type == OP_READLINE | |
2705 | && (k2->op_flags & OPf_STACKED) | |
55d729e4 | 2706 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
a6006777 | 2707 | warnop = k2->op_type; |
2708 | break; | |
2709 | ||
2710 | case OP_SASSIGN: | |
68dc0745 | 2711 | if (k1->op_type == OP_READDIR |
2712 | || k1->op_type == OP_GLOB | |
2713 | || k1->op_type == OP_EACH) | |
a6006777 | 2714 | warnop = k1->op_type; |
2715 | break; | |
2716 | } | |
8ebc5c01 | 2717 | if (warnop) { |
2718 | line_t oldline = curcop->cop_line; | |
2719 | curcop->cop_line = copline; | |
68dc0745 | 2720 | warn("Value of %s%s can be \"0\"; test with defined()", |
2721 | op_desc[warnop], | |
2722 | ((warnop == OP_READLINE || warnop == OP_GLOB) | |
2723 | ? " construct" : "() operator")); | |
2724 | curcop->cop_line = oldline; | |
8ebc5c01 | 2725 | } |
a6006777 | 2726 | } |
79072805 LW |
2727 | |
2728 | if (!other) | |
2729 | return first; | |
2730 | ||
a0d0e21e LW |
2731 | if (type == OP_ANDASSIGN || type == OP_ORASSIGN) |
2732 | other->op_private |= OPpASSIGN_BACKWARDS; /* other is an OP_SASSIGN */ | |
2733 | ||
79072805 LW |
2734 | Newz(1101, logop, 1, LOGOP); |
2735 | ||
2736 | logop->op_type = type; | |
2737 | logop->op_ppaddr = ppaddr[type]; | |
2738 | logop->op_first = first; | |
2739 | logop->op_flags = flags | OPf_KIDS; | |
2740 | logop->op_other = LINKLIST(other); | |
c07a80fd | 2741 | logop->op_private = 1 | (flags >> 8); |
79072805 LW |
2742 | |
2743 | /* establish postfix order */ | |
2744 | logop->op_next = LINKLIST(first); | |
2745 | first->op_next = (OP*)logop; | |
2746 | first->op_sibling = other; | |
2747 | ||
11343788 MB |
2748 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
2749 | other->op_next = o; | |
79072805 | 2750 | |
11343788 | 2751 | return o; |
79072805 LW |
2752 | } |
2753 | ||
2754 | OP * | |
8ac85365 | 2755 | newCONDOP(I32 flags, OP *first, OP *trueop, OP *falseop) |
79072805 | 2756 | { |
11343788 | 2757 | dTHR; |
79072805 | 2758 | CONDOP *condop; |
11343788 | 2759 | OP *o; |
79072805 | 2760 | |
b1cb66bf | 2761 | if (!falseop) |
2762 | return newLOGOP(OP_AND, 0, first, trueop); | |
2763 | if (!trueop) | |
2764 | return newLOGOP(OP_OR, 0, first, falseop); | |
79072805 | 2765 | |
8990e307 | 2766 | scalarboolean(first); |
79072805 LW |
2767 | if (first->op_type == OP_CONST) { |
2768 | if (SvTRUE(((SVOP*)first)->op_sv)) { | |
2769 | op_free(first); | |
b1cb66bf | 2770 | op_free(falseop); |
2771 | return trueop; | |
79072805 LW |
2772 | } |
2773 | else { | |
2774 | op_free(first); | |
b1cb66bf | 2775 | op_free(trueop); |
2776 | return falseop; | |
79072805 LW |
2777 | } |
2778 | } | |
2779 | else if (first->op_type == OP_WANTARRAY) { | |
b1cb66bf | 2780 | list(trueop); |
2781 | scalar(falseop); | |
79072805 LW |
2782 | } |
2783 | Newz(1101, condop, 1, CONDOP); | |
2784 | ||
2785 | condop->op_type = OP_COND_EXPR; | |
2786 | condop->op_ppaddr = ppaddr[OP_COND_EXPR]; | |
2787 | condop->op_first = first; | |
2788 | condop->op_flags = flags | OPf_KIDS; | |
b1cb66bf | 2789 | condop->op_true = LINKLIST(trueop); |
2790 | condop->op_false = LINKLIST(falseop); | |
c07a80fd | 2791 | condop->op_private = 1 | (flags >> 8); |
79072805 LW |
2792 | |
2793 | /* establish postfix order */ | |
2794 | condop->op_next = LINKLIST(first); | |
2795 | first->op_next = (OP*)condop; | |
2796 | ||
b1cb66bf | 2797 | first->op_sibling = trueop; |
2798 | trueop->op_sibling = falseop; | |
11343788 | 2799 | o = newUNOP(OP_NULL, 0, (OP*)condop); |
79072805 | 2800 | |
5dc0d613 MB |
2801 | trueop->op_next = o; |
2802 | falseop->op_next = o; | |
79072805 | 2803 | |
11343788 | 2804 | return o; |
79072805 LW |
2805 | } |
2806 | ||
2807 | OP * | |
8ac85365 | 2808 | newRANGE(I32 flags, OP *left, OP *right) |
79072805 | 2809 | { |
b35b2403 | 2810 | dTHR; |
79072805 LW |
2811 | CONDOP *condop; |
2812 | OP *flip; | |
2813 | OP *flop; | |
11343788 | 2814 | OP *o; |
79072805 LW |
2815 | |
2816 | Newz(1101, condop, 1, CONDOP); | |
2817 | ||
2818 | condop->op_type = OP_RANGE; | |
2819 | condop->op_ppaddr = ppaddr[OP_RANGE]; | |
2820 | condop->op_first = left; | |
2821 | condop->op_flags = OPf_KIDS; | |
2822 | condop->op_true = LINKLIST(left); | |
2823 | condop->op_false = LINKLIST(right); | |
c07a80fd | 2824 | condop->op_private = 1 | (flags >> 8); |
79072805 LW |
2825 | |
2826 | left->op_sibling = right; | |
2827 | ||
2828 | condop->op_next = (OP*)condop; | |
2829 | flip = newUNOP(OP_FLIP, flags, (OP*)condop); | |
2830 | flop = newUNOP(OP_FLOP, 0, flip); | |
11343788 | 2831 | o = newUNOP(OP_NULL, 0, flop); |
79072805 LW |
2832 | linklist(flop); |
2833 | ||
2834 | left->op_next = flip; | |
2835 | right->op_next = flop; | |
2836 | ||
ed6116ce | 2837 | condop->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 | 2838 | sv_upgrade(PAD_SV(condop->op_targ), SVt_PVNV); |
ed6116ce | 2839 | flip->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 LW |
2840 | sv_upgrade(PAD_SV(flip->op_targ), SVt_PVNV); |
2841 | ||
2842 | flip->op_private = left->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
2843 | flop->op_private = right->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
2844 | ||
11343788 | 2845 | flip->op_next = o; |
79072805 | 2846 | if (!flip->op_private || !flop->op_private) |
11343788 | 2847 | linklist(o); /* blow off optimizer unless constant */ |
79072805 | 2848 | |
11343788 | 2849 | return o; |
79072805 LW |
2850 | } |
2851 | ||
2852 | OP * | |
8ac85365 | 2853 | newLOOPOP(I32 flags, I32 debuggable, OP *expr, OP *block) |
79072805 | 2854 | { |
11343788 | 2855 | dTHR; |
463ee0b2 | 2856 | OP* listop; |
11343788 | 2857 | OP* o; |
463ee0b2 | 2858 | int once = block && block->op_flags & OPf_SPECIAL && |
a0d0e21e | 2859 | (block->op_type == OP_ENTERSUB || block->op_type == OP_NULL); |
93a17b20 | 2860 | |
463ee0b2 LW |
2861 | if (expr) { |
2862 | if (once && expr->op_type == OP_CONST && !SvTRUE(((SVOP*)expr)->op_sv)) | |
2863 | return block; /* do {} while 0 does once */ | |
fb73857a | 2864 | if (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB |
2865 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB)) { | |
774d564b | 2866 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 2867 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 GS |
2868 | } else if (expr->op_flags & OPf_KIDS) { |
2869 | OP *k1 = ((UNOP*)expr)->op_first; | |
2870 | OP *k2 = (k1) ? k1->op_sibling : NULL; | |
2871 | switch (expr->op_type) { | |
2872 | case OP_NULL: | |
2873 | if (k2 && k2->op_type == OP_READLINE | |
2874 | && (k2->op_flags & OPf_STACKED) | |
2875 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) | |
2876 | expr = newUNOP(OP_DEFINED, 0, expr); | |
2877 | break; | |
2878 | ||
2879 | case OP_SASSIGN: | |
2880 | if (k1->op_type == OP_READDIR | |
2881 | || k1->op_type == OP_GLOB | |
2882 | || k1->op_type == OP_EACH) | |
2883 | expr = newUNOP(OP_DEFINED, 0, expr); | |
2884 | break; | |
2885 | } | |
774d564b | 2886 | } |
463ee0b2 | 2887 | } |
93a17b20 | 2888 | |
8990e307 | 2889 | listop = append_elem(OP_LINESEQ, block, newOP(OP_UNSTACK, 0)); |
883ffac3 | 2890 | o = new_logop(OP_AND, 0, &expr, &listop); |
463ee0b2 | 2891 | |
883ffac3 CS |
2892 | if (listop) |
2893 | ((LISTOP*)listop)->op_last->op_next = LINKLIST(o); | |
79072805 | 2894 | |
11343788 MB |
2895 | if (once && o != listop) |
2896 | o->op_next = ((LOGOP*)cUNOPo->op_first)->op_other; | |
79072805 | 2897 | |
11343788 MB |
2898 | if (o == listop) |
2899 | o = newUNOP(OP_NULL, 0, o); /* or do {} while 1 loses outer block */ | |
748a9306 | 2900 | |
11343788 MB |
2901 | o->op_flags |= flags; |
2902 | o = scope(o); | |
2903 | o->op_flags |= OPf_SPECIAL; /* suppress POPBLOCK curpm restoration*/ | |
2904 | return o; | |
79072805 LW |
2905 | } |
2906 | ||
2907 | OP * | |
8ac85365 | 2908 | newWHILEOP(I32 flags, I32 debuggable, LOOP *loop, I32 whileline, OP *expr, OP *block, OP *cont) |
79072805 | 2909 | { |
11343788 | 2910 | dTHR; |
79072805 LW |
2911 | OP *redo; |
2912 | OP *next = 0; | |
2913 | OP *listop; | |
11343788 | 2914 | OP *o; |
79072805 LW |
2915 | OP *condop; |
2916 | ||
fb73857a | 2917 | if (expr && (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB |
2918 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB))) { | |
748a9306 | 2919 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 2920 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 GS |
2921 | } else if (expr && (expr->op_flags & OPf_KIDS)) { |
2922 | OP *k1 = ((UNOP*)expr)->op_first; | |
2923 | OP *k2 = (k1) ? k1->op_sibling : NULL; | |
2924 | switch (expr->op_type) { | |
2925 | case OP_NULL: | |
2926 | if (k2 && k2->op_type == OP_READLINE | |
2927 | && (k2->op_flags & OPf_STACKED) | |
2928 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) | |
2929 | expr = newUNOP(OP_DEFINED, 0, expr); | |
2930 | break; | |
2931 | ||
2932 | case OP_SASSIGN: | |
2933 | if (k1->op_type == OP_READDIR | |
2934 | || k1->op_type == OP_GLOB | |
2935 | || k1->op_type == OP_EACH) | |
2936 | expr = newUNOP(OP_DEFINED, 0, expr); | |
2937 | break; | |
2938 | } | |
748a9306 | 2939 | } |
79072805 LW |
2940 | |
2941 | if (!block) | |
2942 | block = newOP(OP_NULL, 0); | |
2943 | ||
2944 | if (cont) | |
2945 | next = LINKLIST(cont); | |
fb73857a | 2946 | if (expr) { |
79072805 | 2947 | cont = append_elem(OP_LINESEQ, cont, newOP(OP_UNSTACK, 0)); |
fb73857a | 2948 | if ((line_t)whileline != NOLINE) { |
2949 | copline = whileline; | |
2950 | cont = append_elem(OP_LINESEQ, cont, | |
2951 | newSTATEOP(0, Nullch, Nullop)); | |
2952 | } | |
2953 | } | |
79072805 | 2954 | |
463ee0b2 | 2955 | listop = append_list(OP_LINESEQ, (LISTOP*)block, (LISTOP*)cont); |
79072805 LW |
2956 | redo = LINKLIST(listop); |
2957 | ||
2958 | if (expr) { | |
883ffac3 CS |
2959 | copline = whileline; |
2960 | scalar(listop); | |
2961 | o = new_logop(OP_AND, 0, &expr, &listop); | |
11343788 | 2962 | if (o == expr && o->op_type == OP_CONST && !SvTRUE(cSVOPo->op_sv)) { |
85e6fe83 | 2963 | op_free(expr); /* oops, it's a while (0) */ |
463ee0b2 | 2964 | op_free((OP*)loop); |
883ffac3 | 2965 | return Nullop; /* listop already freed by new_logop */ |
463ee0b2 | 2966 | } |
883ffac3 CS |
2967 | if (listop) |
2968 | ((LISTOP*)listop)->op_last->op_next = condop = | |
2969 | (o == listop ? redo : LINKLIST(o)); | |
79072805 LW |
2970 | if (!next) |
2971 | next = condop; | |
2972 | } | |
2973 | else | |
11343788 | 2974 | o = listop; |
79072805 LW |
2975 | |
2976 | if (!loop) { | |
2977 | Newz(1101,loop,1,LOOP); | |
2978 | loop->op_type = OP_ENTERLOOP; | |
2979 | loop->op_ppaddr = ppaddr[OP_ENTERLOOP]; | |
2980 | loop->op_private = 0; | |
2981 | loop->op_next = (OP*)loop; | |
2982 | } | |
2983 | ||
11343788 | 2984 | o = newBINOP(OP_LEAVELOOP, 0, (OP*)loop, o); |
79072805 LW |
2985 | |
2986 | loop->op_redoop = redo; | |
11343788 | 2987 | loop->op_lastop = o; |
79072805 LW |
2988 | |
2989 | if (next) | |
2990 | loop->op_nextop = next; | |
2991 | else | |
11343788 | 2992 | loop->op_nextop = o; |
79072805 | 2993 | |
11343788 MB |
2994 | o->op_flags |= flags; |
2995 | o->op_private |= (flags >> 8); | |
2996 | return o; | |
79072805 LW |
2997 | } |
2998 | ||
2999 | OP * | |
8990e307 | 3000 | newFOROP(I32 flags,char *label,line_t forline,OP *sv,OP *expr,OP *block,OP *cont) |
79072805 LW |
3001 | { |
3002 | LOOP *loop; | |
fb73857a | 3003 | OP *wop; |
85e6fe83 | 3004 | int padoff = 0; |
4633a7c4 | 3005 | I32 iterflags = 0; |
79072805 | 3006 | |
79072805 | 3007 | if (sv) { |
85e6fe83 | 3008 | if (sv->op_type == OP_RV2SV) { /* symbol table variable */ |
748a9306 LW |
3009 | sv->op_type = OP_RV2GV; |
3010 | sv->op_ppaddr = ppaddr[OP_RV2GV]; | |
79072805 | 3011 | } |
85e6fe83 LW |
3012 | else if (sv->op_type == OP_PADSV) { /* private variable */ |
3013 | padoff = sv->op_targ; | |
3014 | op_free(sv); | |
3015 | sv = Nullop; | |
3016 | } | |
54b9620d MB |
3017 | else if (sv->op_type == OP_THREADSV) { /* per-thread variable */ |
3018 | padoff = sv->op_targ; | |
3019 | iterflags |= OPf_SPECIAL; | |
3020 | op_free(sv); | |
3021 | sv = Nullop; | |
3022 | } | |
79072805 | 3023 | else |
c07a80fd | 3024 | croak("Can't use %s for loop variable", op_desc[sv->op_type]); |
79072805 LW |
3025 | } |
3026 | else { | |
54b9620d MB |
3027 | #ifdef USE_THREADS |
3028 | padoff = find_threadsv("_"); | |
3029 | iterflags |= OPf_SPECIAL; | |
3030 | #else | |
79072805 | 3031 | sv = newGVOP(OP_GV, 0, defgv); |
54b9620d | 3032 | #endif |
79072805 | 3033 | } |
5f05dabc | 3034 | if (expr->op_type == OP_RV2AV || expr->op_type == OP_PADAV) { |
89ea2908 | 3035 | expr = mod(force_list(scalar(ref(expr, OP_ITER))), OP_GREPSTART); |
4633a7c4 LW |
3036 | iterflags |= OPf_STACKED; |
3037 | } | |
89ea2908 GA |
3038 | else if (expr->op_type == OP_NULL && |
3039 | (expr->op_flags & OPf_KIDS) && | |
3040 | ((BINOP*)expr)->op_first->op_type == OP_FLOP) | |
3041 | { | |
3042 | /* Basically turn for($x..$y) into the same as for($x,$y), but we | |
3043 | * set the STACKED flag to indicate that these values are to be | |
3044 | * treated as min/max values by 'pp_iterinit'. | |
3045 | */ | |
3046 | UNOP* flip = (UNOP*)((UNOP*)((BINOP*)expr)->op_first)->op_first; | |
3047 | CONDOP* range = (CONDOP*) flip->op_first; | |
3048 | OP* left = range->op_first; | |
3049 | OP* right = left->op_sibling; | |
3050 | LISTOP* list; | |
3051 | ||
3052 | range->op_flags &= ~OPf_KIDS; | |
3053 | range->op_first = Nullop; | |
3054 | ||
3055 | list = (LISTOP*)newLISTOP(OP_LIST, 0, left, right); | |
3056 | list->op_first->op_next = range->op_true; | |
3057 | left->op_next = range->op_false; | |
3058 | right->op_next = (OP*)list; | |
3059 | list->op_next = list->op_first; | |
3060 | ||
3061 | op_free(expr); | |
3062 | expr = (OP*)(list); | |
3063 | null(expr); | |
3064 | iterflags |= OPf_STACKED; | |
3065 | } | |
3066 | else { | |
3067 | expr = mod(force_list(expr), OP_GREPSTART); | |
3068 | } | |
3069 | ||
3070 | ||
4633a7c4 | 3071 | loop = (LOOP*)list(convert(OP_ENTERITER, iterflags, |
89ea2908 | 3072 | append_elem(OP_LIST, expr, scalar(sv)))); |
85e6fe83 LW |
3073 | assert(!loop->op_next); |
3074 | Renew(loop, 1, LOOP); | |
3075 | loop->op_targ = padoff; | |
fb73857a | 3076 | wop = newWHILEOP(flags, 1, loop, forline, newOP(OP_ITER, 0), block, cont); |
3077 | copline = forline; | |
3078 | return newSTATEOP(0, label, wop); | |
79072805 LW |
3079 | } |
3080 | ||
8990e307 | 3081 | OP* |
8ac85365 | 3082 | newLOOPEX(I32 type, OP *label) |
8990e307 | 3083 | { |
11343788 MB |
3084 | dTHR; |
3085 | OP *o; | |
8990e307 | 3086 | if (type != OP_GOTO || label->op_type == OP_CONST) { |
cdaebead MB |
3087 | /* "last()" means "last" */ |
3088 | if (label->op_type == OP_STUB && (label->op_flags & OPf_PARENS)) | |
3089 | o = newOP(type, OPf_SPECIAL); | |
3090 | else { | |
3091 | o = newPVOP(type, 0, savepv(label->op_type == OP_CONST | |
3092 | ? SvPVx(((SVOP*)label)->op_sv, na) | |
3093 | : "")); | |
3094 | } | |
8990e307 LW |
3095 | op_free(label); |
3096 | } | |
3097 | else { | |
a0d0e21e LW |
3098 | if (label->op_type == OP_ENTERSUB) |
3099 | label = newUNOP(OP_REFGEN, 0, mod(label, OP_REFGEN)); | |
11343788 | 3100 | o = newUNOP(type, OPf_STACKED, label); |
8990e307 | 3101 | } |
85e6fe83 | 3102 | hints |= HINT_BLOCK_SCOPE; |
11343788 | 3103 | return o; |
8990e307 LW |
3104 | } |
3105 | ||
79072805 | 3106 | void |
8ac85365 | 3107 | cv_undef(CV *cv) |
79072805 | 3108 | { |
11343788 MB |
3109 | dTHR; |
3110 | #ifdef USE_THREADS | |
e858de61 MB |
3111 | if (CvMUTEXP(cv)) { |
3112 | MUTEX_DESTROY(CvMUTEXP(cv)); | |
3113 | Safefree(CvMUTEXP(cv)); | |
3114 | CvMUTEXP(cv) = 0; | |
3115 | } | |
11343788 MB |
3116 | #endif /* USE_THREADS */ |
3117 | ||
a0d0e21e | 3118 | if (!CvXSUB(cv) && CvROOT(cv)) { |
11343788 MB |
3119 | #ifdef USE_THREADS |
3120 | if (CvDEPTH(cv) || (CvOWNER(cv) && CvOWNER(cv) != thr)) | |
3121 | croak("Can't undef active subroutine"); | |
3122 | #else | |
a0d0e21e LW |
3123 | if (CvDEPTH(cv)) |
3124 | croak("Can't undef active subroutine"); | |
11343788 | 3125 | #endif /* USE_THREADS */ |
8990e307 | 3126 | ENTER; |
a0d0e21e LW |
3127 | |
3128 | SAVESPTR(curpad); | |
3129 | curpad = 0; | |
3130 | ||
a5f75d66 | 3131 | if (!CvCLONED(cv)) |
748a9306 | 3132 | op_free(CvROOT(cv)); |
79072805 | 3133 | CvROOT(cv) = Nullop; |
8990e307 | 3134 | LEAVE; |
79072805 | 3135 | } |
1d5db326 | 3136 | SvPOK_off((SV*)cv); /* forget prototype */ |
44a8e56a | 3137 | CvFLAGS(cv) = 0; |
8e07c86e AD |
3138 | SvREFCNT_dec(CvGV(cv)); |
3139 | CvGV(cv) = Nullgv; | |
3140 | SvREFCNT_dec(CvOUTSIDE(cv)); | |
3141 | CvOUTSIDE(cv) = Nullcv; | |
3142 | if (CvPADLIST(cv)) { | |
8ebc5c01 | 3143 | /* may be during global destruction */ |
3144 | if (SvREFCNT(CvPADLIST(cv))) { | |
93965878 | 3145 | I32 i = AvFILLp(CvPADLIST(cv)); |
8ebc5c01 | 3146 | while (i >= 0) { |
3147 | SV** svp = av_fetch(CvPADLIST(cv), i--, FALSE); | |
46fc3d4c | 3148 | SV* sv = svp ? *svp : Nullsv; |
3149 | if (!sv) | |
3150 | continue; | |
3151 | if (sv == (SV*)comppad_name) | |
3152 | comppad_name = Nullav; | |
3153 | else if (sv == (SV*)comppad) { | |
3154 | comppad = Nullav; | |
3155 | curpad = Null(SV**); | |
3156 | } | |
3157 | SvREFCNT_dec(sv); | |
8ebc5c01 | 3158 | } |
3159 | SvREFCNT_dec((SV*)CvPADLIST(cv)); | |
8e07c86e | 3160 | } |
8e07c86e AD |
3161 | CvPADLIST(cv) = Nullav; |
3162 | } | |
79072805 LW |
3163 | } |
3164 | ||
5f05dabc | 3165 | #ifdef DEBUG_CLOSURES |
76e3520e | 3166 | STATIC void |
5f05dabc | 3167 | cv_dump(cv) |
3168 | CV* cv; | |
3169 | { | |
3170 | CV *outside = CvOUTSIDE(cv); | |
3171 | AV* padlist = CvPADLIST(cv); | |
4fdae800 | 3172 | AV* pad_name; |
3173 | AV* pad; | |
3174 | SV** pname; | |
3175 | SV** ppad; | |
5f05dabc | 3176 | I32 ix; |
3177 | ||
fb73857a | 3178 | PerlIO_printf(Perl_debug_log, "\tCV=0x%lx (%s), OUTSIDE=0x%lx (%s)\n", |
ab50184a CS |
3179 | cv, |
3180 | (CvANON(cv) ? "ANON" | |
3181 | : (cv == main_cv) ? "MAIN" | |
07055b4c | 3182 | : CvUNIQUE(outside) ? "UNIQUE" |
44a8e56a | 3183 | : CvGV(cv) ? GvNAME(CvGV(cv)) : "UNDEFINED"), |
ab50184a CS |
3184 | outside, |
3185 | (!outside ? "null" | |
3186 | : CvANON(outside) ? "ANON" | |
3187 | : (outside == main_cv) ? "MAIN" | |
07055b4c | 3188 | : CvUNIQUE(outside) ? "UNIQUE" |
44a8e56a | 3189 | : CvGV(outside) ? GvNAME(CvGV(outside)) : "UNDEFINED")); |
5f05dabc | 3190 | |
4fdae800 | 3191 | if (!padlist) |
3192 | return; | |
3193 | ||
3194 | pad_name = (AV*)*av_fetch(padlist, 0, FALSE); | |
3195 | pad = (AV*)*av_fetch(padlist, 1, FALSE); | |
3196 | pname = AvARRAY(pad_name); | |
3197 | ppad = AvARRAY(pad); | |
3198 | ||
93965878 | 3199 | for (ix = 1; ix <= AvFILLp(pad_name); ix++) { |
5f05dabc | 3200 | if (SvPOK(pname[ix])) |
fb73857a | 3201 | PerlIO_printf(Perl_debug_log, "\t%4d. 0x%lx (%s\"%s\" %ld-%ld)\n", |
4fdae800 | 3202 | ix, ppad[ix], |
3203 | SvFAKE(pname[ix]) ? "FAKE " : "", | |
3204 | SvPVX(pname[ix]), | |
ab50184a CS |
3205 | (long)I_32(SvNVX(pname[ix])), |
3206 | (long)SvIVX(pname[ix])); | |
5f05dabc | 3207 | } |
3208 | } | |
3209 | #endif /* DEBUG_CLOSURES */ | |
3210 | ||
76e3520e | 3211 | STATIC CV * |
8ac85365 | 3212 | cv_clone2(CV *proto, CV *outside) |
748a9306 | 3213 | { |
11343788 | 3214 | dTHR; |
748a9306 LW |
3215 | AV* av; |
3216 | I32 ix; | |
3217 | AV* protopadlist = CvPADLIST(proto); | |
3218 | AV* protopad_name = (AV*)*av_fetch(protopadlist, 0, FALSE); | |
3219 | AV* protopad = (AV*)*av_fetch(protopadlist, 1, FALSE); | |
5f05dabc | 3220 | SV** pname = AvARRAY(protopad_name); |
3221 | SV** ppad = AvARRAY(protopad); | |
93965878 NIS |
3222 | I32 fname = AvFILLp(protopad_name); |
3223 | I32 fpad = AvFILLp(protopad); | |
748a9306 LW |
3224 | AV* comppadlist; |
3225 | CV* cv; | |
3226 | ||
07055b4c CS |
3227 | assert(!CvUNIQUE(proto)); |
3228 | ||
748a9306 LW |
3229 | ENTER; |
3230 | SAVESPTR(curpad); | |
3231 | SAVESPTR(comppad); | |
46fc3d4c | 3232 | SAVESPTR(comppad_name); |
748a9306 LW |
3233 | SAVESPTR(compcv); |
3234 | ||
3235 | cv = compcv = (CV*)NEWSV(1104,0); | |
fa83b5b6 | 3236 | sv_upgrade((SV *)cv, SvTYPE(proto)); |
a5f75d66 | 3237 | CvCLONED_on(cv); |
5f05dabc | 3238 | if (CvANON(proto)) |
3239 | CvANON_on(cv); | |
748a9306 | 3240 | |
11343788 | 3241 | #ifdef USE_THREADS |
12ca11f6 | 3242 | New(666, CvMUTEXP(cv), 1, perl_mutex); |
11343788 | 3243 | MUTEX_INIT(CvMUTEXP(cv)); |
11343788 MB |
3244 | CvOWNER(cv) = 0; |
3245 | #endif /* USE_THREADS */ | |
748a9306 | 3246 | CvFILEGV(cv) = CvFILEGV(proto); |
44a8e56a | 3247 | CvGV(cv) = (GV*)SvREFCNT_inc(CvGV(proto)); |
748a9306 LW |
3248 | CvSTASH(cv) = CvSTASH(proto); |
3249 | CvROOT(cv) = CvROOT(proto); | |
3250 | CvSTART(cv) = CvSTART(proto); | |
5f05dabc | 3251 | if (outside) |
3252 | CvOUTSIDE(cv) = (CV*)SvREFCNT_inc(outside); | |
748a9306 | 3253 | |
68dc0745 | 3254 | if (SvPOK(proto)) |
3255 | sv_setpvn((SV*)cv, SvPVX(proto), SvCUR(proto)); | |
3256 | ||
46fc3d4c | 3257 | comppad_name = newAV(); |
3258 | for (ix = fname; ix >= 0; ix--) | |
3259 | av_store(comppad_name, ix, SvREFCNT_inc(pname[ix])); | |
748a9306 LW |
3260 | |
3261 | comppad = newAV(); | |
3262 | ||
3263 | comppadlist = newAV(); | |
3264 | AvREAL_off(comppadlist); | |
46fc3d4c | 3265 | av_store(comppadlist, 0, (SV*)comppad_name); |
b355b4e0 | 3266 | av_store(comppadlist, 1, (SV*)comppad); |
748a9306 | 3267 | CvPADLIST(cv) = comppadlist; |
93965878 | 3268 | av_fill(comppad, AvFILLp(protopad)); |
748a9306 LW |
3269 | curpad = AvARRAY(comppad); |
3270 | ||
3271 | av = newAV(); /* will be @_ */ | |
3272 | av_extend(av, 0); | |
3273 | av_store(comppad, 0, (SV*)av); | |
3274 | AvFLAGS(av) = AVf_REIFY; | |
3275 | ||
9607fc9c | 3276 | for (ix = fpad; ix > 0; ix--) { |
3277 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; | |
aa689395 | 3278 | if (namesv && namesv != &sv_undef) { |
3279 | char *name = SvPVX(namesv); /* XXX */ | |
3280 | if (SvFLAGS(namesv) & SVf_FAKE) { /* lexical from outside? */ | |
3281 | I32 off = pad_findlex(name, ix, SvIVX(namesv), | |
5f05dabc | 3282 | CvOUTSIDE(cv), cxstack_ix); |
3283 | if (!off) | |
3284 | curpad[ix] = SvREFCNT_inc(ppad[ix]); | |
3285 | else if (off != ix) | |
748a9306 LW |
3286 | croak("panic: cv_clone: %s", name); |
3287 | } | |
3288 | else { /* our own lexical */ | |
aa689395 | 3289 | SV* sv; |
5f05dabc | 3290 | if (*name == '&') { |
3291 | /* anon code -- we'll come back for it */ | |
3292 | sv = SvREFCNT_inc(ppad[ix]); | |
3293 | } | |
3294 | else if (*name == '@') | |
3295 | sv = (SV*)newAV(); | |
748a9306 | 3296 | else if (*name == '%') |
5f05dabc | 3297 | sv = (SV*)newHV(); |
748a9306 | 3298 | else |
5f05dabc | 3299 | sv = NEWSV(0,0); |
3300 | if (!SvPADBUSY(sv)) | |
3301 | SvPADMY_on(sv); | |
3302 | curpad[ix] = sv; | |
748a9306 LW |
3303 | } |
3304 | } | |
3305 | else { | |
aa689395 | 3306 | SV* sv = NEWSV(0,0); |
748a9306 | 3307 | SvPADTMP_on(sv); |
5f05dabc | 3308 | curpad[ix] = sv; |
748a9306 LW |
3309 | } |
3310 | } | |
3311 | ||
5f05dabc | 3312 | /* Now that vars are all in place, clone nested closures. */ |
3313 | ||
9607fc9c | 3314 | for (ix = fpad; ix > 0; ix--) { |
3315 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; | |
aa689395 | 3316 | if (namesv |
3317 | && namesv != &sv_undef | |
3318 | && !(SvFLAGS(namesv) & SVf_FAKE) | |
3319 | && *SvPVX(namesv) == '&' | |
5f05dabc | 3320 | && CvCLONE(ppad[ix])) |
3321 | { | |
3322 | CV *kid = cv_clone2((CV*)ppad[ix], cv); | |
3323 | SvREFCNT_dec(ppad[ix]); | |
3324 | CvCLONE_on(kid); | |
3325 | SvPADMY_on(kid); | |
3326 | curpad[ix] = (SV*)kid; | |
748a9306 LW |
3327 | } |
3328 | } | |
3329 | ||
5f05dabc | 3330 | #ifdef DEBUG_CLOSURES |
ab50184a CS |
3331 | PerlIO_printf(Perl_debug_log, "Cloned inside:\n"); |
3332 | cv_dump(outside); | |
3333 | PerlIO_printf(Perl_debug_log, " from:\n"); | |
5f05dabc | 3334 | cv_dump(proto); |
ab50184a | 3335 | PerlIO_printf(Perl_debug_log, " to:\n"); |
5f05dabc | 3336 | cv_dump(cv); |
3337 | #endif | |
3338 | ||
748a9306 LW |
3339 | LEAVE; |
3340 | return cv; | |
3341 | } | |
3342 | ||
3343 | CV * | |
8ac85365 | 3344 | cv_clone(CV *proto) |
5f05dabc | 3345 | { |
3346 | return cv_clone2(proto, CvOUTSIDE(proto)); | |
3347 | } | |
3348 | ||
3fe9a6f1 | 3349 | void |
8ac85365 | 3350 | cv_ckproto(CV *cv, GV *gv, char *p) |
3fe9a6f1 | 3351 | { |
3352 | if ((!p != !SvPOK(cv)) || (p && strNE(p, SvPVX(cv)))) { | |
46fc3d4c | 3353 | SV* msg = sv_newmortal(); |
3fe9a6f1 | 3354 | SV* name = Nullsv; |
3355 | ||
3356 | if (gv) | |
46fc3d4c | 3357 | gv_efullname3(name = sv_newmortal(), gv, Nullch); |
3358 | sv_setpv(msg, "Prototype mismatch:"); | |
3359 | if (name) | |
fc36a67e | 3360 | sv_catpvf(msg, " sub %_", name); |
3fe9a6f1 | 3361 | if (SvPOK(cv)) |
46fc3d4c | 3362 | sv_catpvf(msg, " (%s)", SvPVX(cv)); |
3363 | sv_catpv(msg, " vs "); | |
3364 | if (p) | |
3365 | sv_catpvf(msg, "(%s)", p); | |
3366 | else | |
3367 | sv_catpv(msg, "none"); | |
fc36a67e | 3368 | warn("%_", msg); |
3fe9a6f1 | 3369 | } |
3370 | } | |
3371 | ||
760ac839 | 3372 | SV * |
8ac85365 | 3373 | cv_const_sv(CV *cv) |
760ac839 | 3374 | { |
54310121 | 3375 | if (!cv || !SvPOK(cv) || SvCUR(cv)) |
3376 | return Nullsv; | |
fe5e78ed GS |
3377 | return op_const_sv(CvSTART(cv), cv); |
3378 | } | |
760ac839 | 3379 | |
fe5e78ed GS |
3380 | SV * |
3381 | op_const_sv(OP *o, CV *cv) | |
3382 | { | |
3383 | SV *sv = Nullsv; | |
3384 | ||
3385 | if(!o) | |
3386 | return Nullsv; | |
3387 | ||
3388 | if(o->op_type == OP_LINESEQ && cLISTOPo->op_first) | |
3389 | o = cLISTOPo->op_first->op_sibling; | |
3390 | ||
3391 | for (; o; o = o->op_next) { | |
54310121 | 3392 | OPCODE type = o->op_type; |
fe5e78ed GS |
3393 | |
3394 | if(sv && o->op_next == o) | |
3395 | return sv; | |
54310121 | 3396 | if (type == OP_NEXTSTATE || type == OP_NULL || type == OP_PUSHMARK) |
3397 | continue; | |
3398 | if (type == OP_LEAVESUB || type == OP_RETURN) | |
3399 | break; | |
3400 | if (sv) | |
3401 | return Nullsv; | |
3402 | if (type == OP_CONST) | |
5dc0d613 | 3403 | sv = cSVOPo->op_sv; |
fe5e78ed | 3404 | else if (type == OP_PADSV && cv) { |
e858de61 MB |
3405 | AV* padav = (AV*)(AvARRAY(CvPADLIST(cv))[1]); |
3406 | sv = padav ? AvARRAY(padav)[o->op_targ] : Nullsv; | |
5aabfad6 | 3407 | if (!sv || (!SvREADONLY(sv) && SvREFCNT(sv) > 1)) |
54310121 | 3408 | return Nullsv; |
760ac839 | 3409 | } |
54310121 | 3410 | else |
3411 | return Nullsv; | |
760ac839 | 3412 | } |
5aabfad6 | 3413 | if (sv) |
3414 | SvREADONLY_on(sv); | |
760ac839 LW |
3415 | return sv; |
3416 | } | |
3417 | ||
748a9306 | 3418 | CV * |
8ac85365 | 3419 | newSUB(I32 floor, OP *o, OP *proto, OP *block) |
79072805 | 3420 | { |
11343788 | 3421 | dTHR; |
5dc0d613 | 3422 | char *name = o ? SvPVx(cSVOPo->op_sv, na) : Nullch; |
55d729e4 GS |
3423 | GV *gv = gv_fetchpv(name ? name : "__ANON__", |
3424 | GV_ADDMULTI | (block ? 0 : GV_NOINIT), SVt_PVCV); | |
3fe9a6f1 | 3425 | char *ps = proto ? SvPVx(((SVOP*)proto)->op_sv, na) : Nullch; |
a2008d6d | 3426 | register CV *cv=0; |
a0d0e21e | 3427 | I32 ix; |
79072805 | 3428 | |
11343788 | 3429 | if (o) |
5dc0d613 | 3430 | SAVEFREEOP(o); |
3fe9a6f1 | 3431 | if (proto) |
3432 | SAVEFREEOP(proto); | |
3433 | ||
55d729e4 GS |
3434 | if (SvTYPE(gv) != SVt_PVGV) { /* Prototype now, and had |
3435 | maximum a prototype before. */ | |
3436 | if (SvTYPE(gv) > SVt_NULL) { | |
3437 | if (!SvPOK((SV*)gv) && !(SvIOK((SV*)gv) && SvIVX((SV*)gv) == -1)) | |
3438 | warn("Runaway prototype"); | |
3439 | cv_ckproto((CV*)gv, NULL, ps); | |
3440 | } | |
3441 | if (ps) | |
3442 | sv_setpv((SV*)gv, ps); | |
3443 | else | |
3444 | sv_setiv((SV*)gv, -1); | |
3445 | SvREFCNT_dec(compcv); | |
57ff9a15 | 3446 | cv = compcv = NULL; |
55d729e4 GS |
3447 | sub_generation++; |
3448 | goto noblock; | |
3449 | } | |
3450 | ||
68dc0745 | 3451 | if (!name || GvCVGEN(gv)) |
3452 | cv = Nullcv; | |
3453 | else if (cv = GvCV(gv)) { | |
3fe9a6f1 | 3454 | cv_ckproto(cv, gv, ps); |
68dc0745 | 3455 | /* already defined (or promised)? */ |
3456 | if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
3457 | SV* const_sv; | |
fe5e78ed | 3458 | bool const_changed = TRUE; |
aa689395 | 3459 | if (!block) { |
3460 | /* just a "sub foo;" when &foo is already defined */ | |
3461 | SAVEFREESV(compcv); | |
3462 | goto done; | |
3463 | } | |
7bac28a0 | 3464 | /* ahem, death to those who redefine active sort subs */ |
e336de0d | 3465 | if (curstackinfo->si_type == SI_SORT && sortcop == CvSTART(cv)) |
7bac28a0 | 3466 | croak("Can't redefine active sort subroutine %s", name); |
fe5e78ed GS |
3467 | if(const_sv = cv_const_sv(cv)) |
3468 | const_changed = sv_cmp(const_sv, op_const_sv(block, Nullcv)); | |
3469 | if ((const_sv && const_changed) || dowarn && !(CvGV(cv) && GvSTASH(CvGV(cv)) | |
2f34f9d4 IZ |
3470 | && HvNAME(GvSTASH(CvGV(cv))) |
3471 | && strEQ(HvNAME(GvSTASH(CvGV(cv))), | |
3472 | "autouse"))) { | |
79072805 | 3473 | line_t oldline = curcop->cop_line; |
79072805 | 3474 | curcop->cop_line = copline; |
760ac839 | 3475 | warn(const_sv ? "Constant subroutine %s redefined" |
68dc0745 | 3476 | : "Subroutine %s redefined", name); |
79072805 LW |
3477 | curcop->cop_line = oldline; |
3478 | } | |
8990e307 | 3479 | SvREFCNT_dec(cv); |
68dc0745 | 3480 | cv = Nullcv; |
79072805 LW |
3481 | } |
3482 | } | |
a0d0e21e | 3483 | if (cv) { /* must reuse cv if autoloaded */ |
4633a7c4 | 3484 | cv_undef(cv); |
44a8e56a | 3485 | CvFLAGS(cv) = CvFLAGS(compcv); |
748a9306 | 3486 | CvOUTSIDE(cv) = CvOUTSIDE(compcv); |
e9a444f0 | 3487 | CvOUTSIDE(compcv) = 0; |
748a9306 | 3488 | CvPADLIST(cv) = CvPADLIST(compcv); |
4aa0a1f7 | 3489 | CvPADLIST(compcv) = 0; |
4633a7c4 LW |
3490 | if (SvREFCNT(compcv) > 1) /* XXX Make closures transit through stub. */ |
3491 | CvOUTSIDE(compcv) = (CV*)SvREFCNT_inc((SV*)cv); | |
748a9306 | 3492 | SvREFCNT_dec(compcv); |
a0d0e21e LW |
3493 | } |
3494 | else { | |
748a9306 | 3495 | cv = compcv; |
44a8e56a | 3496 | if (name) { |
3497 | GvCV(gv) = cv; | |
3498 | GvCVGEN(gv) = 0; | |
3499 | sub_generation++; | |
3500 | } | |
a0d0e21e | 3501 | } |
44a8e56a | 3502 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
79072805 | 3503 | CvFILEGV(cv) = curcop->cop_filegv; |
8990e307 | 3504 | CvSTASH(cv) = curstash; |
11343788 MB |
3505 | #ifdef USE_THREADS |
3506 | CvOWNER(cv) = 0; | |
12ca11f6 | 3507 | New(666, CvMUTEXP(cv), 1, perl_mutex); |
11343788 | 3508 | MUTEX_INIT(CvMUTEXP(cv)); |
11343788 | 3509 | #endif /* USE_THREADS */ |
8990e307 | 3510 | |
3fe9a6f1 | 3511 | if (ps) |
3512 | sv_setpv((SV*)cv, ps); | |
4633a7c4 | 3513 | |
c07a80fd | 3514 | if (error_count) { |
3515 | op_free(block); | |
3516 | block = Nullop; | |
68dc0745 | 3517 | if (name) { |
3518 | char *s = strrchr(name, ':'); | |
3519 | s = s ? s+1 : name; | |
6d4c2119 CS |
3520 | if (strEQ(s, "BEGIN")) { |
3521 | char *not_safe = | |
3522 | "BEGIN not safe after errors--compilation aborted"; | |
3523 | if (in_eval & 4) | |
3524 | croak(not_safe); | |
3525 | else { | |
3526 | /* force display of errors found but not reported */ | |
38a03e6e MB |
3527 | sv_catpv(ERRSV, not_safe); |
3528 | croak("%s", SvPVx(ERRSV, na)); | |
6d4c2119 CS |
3529 | } |
3530 | } | |
68dc0745 | 3531 | } |
c07a80fd | 3532 | } |
a0d0e21e | 3533 | if (!block) { |
55d729e4 | 3534 | noblock: |
a0d0e21e LW |
3535 | copline = NOLINE; |
3536 | LEAVE_SCOPE(floor); | |
3537 | return cv; | |
3538 | } | |
3539 | ||
93965878 NIS |
3540 | if (AvFILLp(comppad_name) < AvFILLp(comppad)) |
3541 | av_store(comppad_name, AvFILLp(comppad), Nullsv); | |
a0d0e21e | 3542 | |
54310121 | 3543 | if (CvCLONE(cv)) { |
3544 | SV **namep = AvARRAY(comppad_name); | |
93965878 | 3545 | for (ix = AvFILLp(comppad); ix > 0; ix--) { |
54310121 | 3546 | SV *namesv; |
3547 | ||
3548 | if (SvIMMORTAL(curpad[ix])) | |
3549 | continue; | |
3550 | /* | |
3551 | * The only things that a clonable function needs in its | |
3552 | * pad are references to outer lexicals and anonymous subs. | |
3553 | * The rest are created anew during cloning. | |
3554 | */ | |
3555 | if (!((namesv = namep[ix]) != Nullsv && | |
3556 | namesv != &sv_undef && | |
3557 | (SvFAKE(namesv) || | |
3558 | *SvPVX(namesv) == '&'))) | |
3559 | { | |
3560 | SvREFCNT_dec(curpad[ix]); | |
3561 | curpad[ix] = Nullsv; | |
3562 | } | |
3563 | } | |
a0d0e21e | 3564 | } |
54310121 | 3565 | else { |
3566 | AV *av = newAV(); /* Will be @_ */ | |
3567 | av_extend(av, 0); | |
3568 | av_store(comppad, 0, (SV*)av); | |
3569 | AvFLAGS(av) = AVf_REIFY; | |
79072805 | 3570 | |
93965878 | 3571 | for (ix = AvFILLp(comppad); ix > 0; ix--) { |
54310121 | 3572 | if (SvIMMORTAL(curpad[ix])) |
3573 | continue; | |
3574 | if (!SvPADMY(curpad[ix])) | |
3575 | SvPADTMP_on(curpad[ix]); | |
3576 | } | |
3577 | } | |
79072805 | 3578 | |
a0d0e21e | 3579 | CvROOT(cv) = newUNOP(OP_LEAVESUB, 0, scalarseq(block)); |
79072805 LW |
3580 | CvSTART(cv) = LINKLIST(CvROOT(cv)); |
3581 | CvROOT(cv)->op_next = 0; | |
3582 | peep(CvSTART(cv)); | |
93a17b20 | 3583 | |
44a8e56a | 3584 | if (name) { |
3585 | char *s; | |
3586 | ||
84902520 | 3587 | if (PERLDB_SUBLINE && curstash != debstash) { |
46fc3d4c | 3588 | SV *sv = NEWSV(0,0); |
44a8e56a | 3589 | SV *tmpstr = sv_newmortal(); |
549bb64a | 3590 | GV *db_postponed = gv_fetchpv("DB::postponed", GV_ADDMULTI, SVt_PVHV); |
44a8e56a | 3591 | CV *cv; |
3592 | HV *hv; | |
3593 | ||
51790459 MB |
3594 | sv_setpvf(sv, "%_:%ld-%ld", |
3595 | GvSV(curcop->cop_filegv), | |
3596 | (long)subline, (long)curcop->cop_line); | |
44a8e56a | 3597 | gv_efullname3(tmpstr, gv, Nullch); |
3598 | hv_store(GvHV(DBsub), SvPVX(tmpstr), SvCUR(tmpstr), sv, 0); | |
44a8e56a | 3599 | hv = GvHVn(db_postponed); |
9607fc9c | 3600 | if (HvFILL(hv) > 0 && hv_exists(hv, SvPVX(tmpstr), SvCUR(tmpstr)) |
3601 | && (cv = GvCV(db_postponed))) { | |
44a8e56a | 3602 | dSP; |
924508f0 | 3603 | PUSHMARK(SP); |
44a8e56a | 3604 | XPUSHs(tmpstr); |
3605 | PUTBACK; | |
3606 | perl_call_sv((SV*)cv, G_DISCARD); | |
3607 | } | |
3608 | } | |
79072805 | 3609 | |