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 | ||
e50aee73 | 21 | /* |
5dc0d613 | 22 | * In the following definition, the ", Nullop" is just to make the compiler |
a5f75d66 | 23 | * think the expression is of the right type: croak actually does a Siglongjmp. |
e50aee73 | 24 | */ |
11343788 | 25 | #define CHECKOP(type,o) \ |
28757baa | 26 | ((op_mask && op_mask[type]) \ |
5dc0d613 | 27 | ? ( op_free((OP*)o), \ |
28757baa | 28 | croak("%s trapped by operation mask", op_desc[type]), \ |
29 | Nullop ) \ | |
11343788 | 30 | : (*check[type])((OP*)o)) |
e50aee73 | 31 | |
11343788 | 32 | static I32 list_assignment _((OP *o)); |
4633a7c4 | 33 | static OP *bad_type _((I32 n, char *t, char *name, OP *kid)); |
11343788 MB |
34 | static OP *modkids _((OP *o, I32 type)); |
35 | static OP *no_fh_allowed _((OP *o)); | |
5dc0d613 | 36 | static bool scalar_mod_type _((OP *o, I32 type)); |
11343788 MB |
37 | static OP *scalarboolean _((OP *o)); |
38 | static OP *too_few_arguments _((OP *o, char* name)); | |
39 | static OP *too_many_arguments _((OP *o, char* name)); | |
40 | static void null _((OP* o)); | |
bbce6d69 | 41 | static PADOFFSET pad_findlex _((char* name, PADOFFSET newoff, U32 seq, |
748a9306 | 42 | CV* startcv, I32 cx_ix)); |
79072805 | 43 | |
4633a7c4 | 44 | static char* |
46fc3d4c | 45 | gv_ename(gv) |
46 | GV* gv; | |
4633a7c4 LW |
47 | { |
48 | SV* tmpsv = sv_newmortal(); | |
46fc3d4c | 49 | gv_efullname3(tmpsv, gv, Nullch); |
4633a7c4 LW |
50 | return SvPV(tmpsv,na); |
51 | } | |
52 | ||
8990e307 | 53 | static OP * |
11343788 MB |
54 | no_fh_allowed(o) |
55 | OP *o; | |
79072805 | 56 | { |
46fc3d4c | 57 | yyerror(form("Missing comma after first argument to %s function", |
58 | op_desc[op->op_type])); | |
11343788 | 59 | return o; |
79072805 LW |
60 | } |
61 | ||
8990e307 | 62 | static OP * |
11343788 MB |
63 | too_few_arguments(o, name) |
64 | OP* o; | |
4633a7c4 | 65 | char* name; |
79072805 | 66 | { |
46fc3d4c | 67 | yyerror(form("Not enough arguments for %s", name)); |
11343788 | 68 | return o; |
79072805 LW |
69 | } |
70 | ||
8990e307 | 71 | static OP * |
11343788 MB |
72 | too_many_arguments(o, name) |
73 | OP *o; | |
4633a7c4 | 74 | char* name; |
79072805 | 75 | { |
46fc3d4c | 76 | yyerror(form("Too many arguments for %s", name)); |
11343788 | 77 | return o; |
79072805 LW |
78 | } |
79 | ||
11343788 | 80 | static void |
4633a7c4 | 81 | bad_type(n, t, name, kid) |
8990e307 LW |
82 | I32 n; |
83 | char *t; | |
4633a7c4 | 84 | char *name; |
8990e307 LW |
85 | OP *kid; |
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 |
11343788 MB |
92 | assertref(o) |
93 | OP *o; | |
a0d0e21e | 94 | { |
11343788 | 95 | int type = o->op_type; |
a0d0e21e | 96 | if (type != OP_AELEM && type != OP_HELEM) { |
46fc3d4c | 97 | yyerror(form("Can't use subscript on %s", op_desc[type])); |
8ebc5c01 | 98 | if (type == OP_ENTERSUB || type == OP_RV2HV || type == OP_PADHV) |
748a9306 | 99 | warn("(Did you mean $ or @ instead of %c?)\n", |
8ebc5c01 | 100 | type == OP_ENTERSUB ? '&' : '%'); |
a0d0e21e LW |
101 | } |
102 | } | |
103 | ||
79072805 LW |
104 | /* "register" allocation */ |
105 | ||
106 | PADOFFSET | |
93a17b20 LW |
107 | pad_allocmy(name) |
108 | char *name; | |
109 | { | |
11343788 | 110 | dTHR; |
a0d0e21e LW |
111 | PADOFFSET off; |
112 | SV *sv; | |
113 | ||
114 | if (!(isALPHA(name[1]) || name[1] == '_' && (int)strlen(name) > 2)) { | |
46fc3d4c | 115 | if (!isPRINT(name[1])) { |
116 | name[3] = '\0'; | |
117 | name[2] = toCTRL(name[1]); | |
118 | name[1] = '^'; | |
119 | } | |
a0d0e21e LW |
120 | croak("Can't use global %s in \"my\"",name); |
121 | } | |
b1cb66bf | 122 | if (AvFILL(comppad_name) >= 0) { |
123 | SV **svp = AvARRAY(comppad_name); | |
124 | for (off = AvFILL(comppad_name); off > comppad_name_floor; off--) { | |
125 | if ((sv = svp[off]) | |
126 | && sv != &sv_undef | |
127 | && SvIVX(sv) == 999999999 /* var is in open scope */ | |
128 | && strEQ(name, SvPVX(sv))) | |
129 | { | |
130 | warn("\"my\" variable %s masks earlier declaration in same scope", name); | |
131 | break; | |
132 | } | |
133 | } | |
134 | } | |
a0d0e21e LW |
135 | off = pad_alloc(OP_PADSV, SVs_PADMY); |
136 | sv = NEWSV(1102,0); | |
93a17b20 LW |
137 | sv_upgrade(sv, SVt_PVNV); |
138 | sv_setpv(sv, name); | |
c750a3ec MB |
139 | if (in_my_stash) { |
140 | if (*name != '$') | |
141 | croak("Can't declare class for non-scalar %s in \"my\"",name); | |
142 | SvOBJECT_on(sv); | |
143 | (void)SvUPGRADE(sv, SVt_PVMG); | |
144 | SvSTASH(sv) = (HV*)SvREFCNT_inc(in_my_stash); | |
145 | sv_objcount++; | |
146 | } | |
8990e307 | 147 | av_store(comppad_name, off, sv); |
748a9306 | 148 | SvNVX(sv) = (double)999999999; |
8990e307 LW |
149 | SvIVX(sv) = 0; /* Not yet introduced--see newSTATEOP */ |
150 | if (!min_intro_pending) | |
151 | min_intro_pending = off; | |
152 | max_intro_pending = off; | |
93a17b20 | 153 | if (*name == '@') |
463ee0b2 | 154 | av_store(comppad, off, (SV*)newAV()); |
93a17b20 | 155 | else if (*name == '%') |
463ee0b2 | 156 | av_store(comppad, off, (SV*)newHV()); |
ed6116ce | 157 | SvPADMY_on(curpad[off]); |
93a17b20 LW |
158 | return off; |
159 | } | |
160 | ||
748a9306 | 161 | static PADOFFSET |
e9a444f0 | 162 | #ifndef CAN_PROTOTYPE |
748a9306 | 163 | pad_findlex(name, newoff, seq, startcv, cx_ix) |
93a17b20 | 164 | char *name; |
748a9306 | 165 | PADOFFSET newoff; |
bbce6d69 | 166 | U32 seq; |
748a9306 LW |
167 | CV* startcv; |
168 | I32 cx_ix; | |
e9a444f0 | 169 | #else |
bbce6d69 | 170 | pad_findlex(char *name, PADOFFSET newoff, U32 seq, CV* startcv, I32 cx_ix) |
e9a444f0 | 171 | #endif |
93a17b20 | 172 | { |
11343788 | 173 | dTHR; |
748a9306 | 174 | CV *cv; |
93a17b20 LW |
175 | I32 off; |
176 | SV *sv; | |
93a17b20 LW |
177 | register I32 i; |
178 | register CONTEXT *cx; | |
a0d0e21e | 179 | int saweval; |
93a17b20 | 180 | |
748a9306 | 181 | for (cv = startcv; cv; cv = CvOUTSIDE(cv)) { |
4fdae800 | 182 | AV *curlist = CvPADLIST(cv); |
183 | SV **svp = av_fetch(curlist, 0, FALSE); | |
748a9306 | 184 | AV *curname; |
4fdae800 | 185 | |
748a9306 | 186 | if (!svp || *svp == &sv_undef) |
4633a7c4 | 187 | continue; |
748a9306 LW |
188 | curname = (AV*)*svp; |
189 | svp = AvARRAY(curname); | |
190 | for (off = AvFILL(curname); off > 0; off--) { | |
191 | if ((sv = svp[off]) && | |
192 | sv != &sv_undef && | |
193 | seq <= SvIVX(sv) && | |
13826f2c | 194 | seq > I_32(SvNVX(sv)) && |
748a9306 LW |
195 | strEQ(SvPVX(sv), name)) |
196 | { | |
5f05dabc | 197 | I32 depth; |
198 | AV *oldpad; | |
199 | SV *oldsv; | |
200 | ||
201 | depth = CvDEPTH(cv); | |
202 | if (!depth) { | |
9607fc9c | 203 | if (newoff) { |
204 | if (SvFAKE(sv)) | |
205 | continue; | |
4fdae800 | 206 | return 0; /* don't clone from inactive stack frame */ |
9607fc9c | 207 | } |
5f05dabc | 208 | depth = 1; |
209 | } | |
210 | oldpad = (AV*)*av_fetch(curlist, depth, FALSE); | |
211 | oldsv = *av_fetch(oldpad, off, TRUE); | |
748a9306 | 212 | if (!newoff) { /* Not a mere clone operation. */ |
9607fc9c | 213 | SV *namesv = NEWSV(1103,0); |
748a9306 | 214 | newoff = pad_alloc(OP_PADSV, SVs_PADMY); |
9607fc9c | 215 | sv_upgrade(namesv, SVt_PVNV); |
216 | sv_setpv(namesv, name); | |
217 | av_store(comppad_name, newoff, namesv); | |
218 | SvNVX(namesv) = (double)curcop->cop_seq; | |
219 | SvIVX(namesv) = 999999999; /* A ref, intro immediately */ | |
220 | SvFAKE_on(namesv); /* A ref, not a real var */ | |
774d564b | 221 | if (CvANON(compcv) || SvTYPE(compcv) == SVt_PVFM) { |
28757baa | 222 | /* "It's closures all the way down." */ |
223 | CvCLONE_on(compcv); | |
54310121 | 224 | if (cv == startcv) { |
225 | if (CvANON(compcv)) | |
226 | oldsv = Nullsv; /* no need to keep ref */ | |
227 | } | |
228 | else { | |
28757baa | 229 | CV *bcv; |
230 | for (bcv = startcv; | |
231 | bcv && bcv != cv && !CvCLONE(bcv); | |
232 | bcv = CvOUTSIDE(bcv)) { | |
233 | if (CvANON(bcv)) | |
234 | CvCLONE_on(bcv); | |
235 | else { | |
774d564b | 236 | if (dowarn && !CvUNIQUE(cv)) |
44a8e56a | 237 | warn( |
238 | "Variable \"%s\" may be unavailable", | |
28757baa | 239 | name); |
240 | break; | |
241 | } | |
242 | } | |
243 | } | |
244 | } | |
44a8e56a | 245 | else if (!CvUNIQUE(compcv)) { |
9607fc9c | 246 | if (dowarn && !SvFAKE(sv) && !CvUNIQUE(cv)) |
44a8e56a | 247 | warn("Variable \"%s\" will not stay shared", name); |
5f05dabc | 248 | } |
748a9306 LW |
249 | } |
250 | av_store(comppad, newoff, SvREFCNT_inc(oldsv)); | |
748a9306 LW |
251 | return newoff; |
252 | } | |
93a17b20 LW |
253 | } |
254 | } | |
255 | ||
256 | /* Nothing in current lexical context--try eval's context, if any. | |
257 | * This is necessary to let the perldb get at lexically scoped variables. | |
258 | * XXX This will also probably interact badly with eval tree caching. | |
259 | */ | |
260 | ||
a0d0e21e | 261 | saweval = 0; |
748a9306 | 262 | for (i = cx_ix; i >= 0; i--) { |
93a17b20 LW |
263 | cx = &cxstack[i]; |
264 | switch (cx->cx_type) { | |
265 | default: | |
748a9306 LW |
266 | if (i == 0 && saweval) { |
267 | seq = cxstack[saweval].blk_oldcop->cop_seq; | |
268 | return pad_findlex(name, newoff, seq, main_cv, 0); | |
269 | } | |
93a17b20 LW |
270 | break; |
271 | case CXt_EVAL: | |
44a8e56a | 272 | switch (cx->blk_eval.old_op_type) { |
273 | case OP_ENTEREVAL: | |
274 | saweval = i; | |
275 | break; | |
276 | case OP_REQUIRE: | |
277 | /* require must have its own scope */ | |
278 | return 0; | |
279 | } | |
93a17b20 LW |
280 | break; |
281 | case CXt_SUB: | |
282 | if (!saweval) | |
283 | return 0; | |
284 | cv = cx->blk_sub.cv; | |
748a9306 LW |
285 | if (debstash && CvSTASH(cv) == debstash) { /* ignore DB'* scope */ |
286 | saweval = i; /* so we know where we were called from */ | |
93a17b20 | 287 | continue; |
93a17b20 | 288 | } |
748a9306 LW |
289 | seq = cxstack[saweval].blk_oldcop->cop_seq; |
290 | return pad_findlex(name, newoff, seq, cv, i-1); | |
93a17b20 LW |
291 | } |
292 | } | |
293 | ||
748a9306 LW |
294 | return 0; |
295 | } | |
a0d0e21e | 296 | |
748a9306 LW |
297 | PADOFFSET |
298 | pad_findmy(name) | |
299 | char *name; | |
300 | { | |
11343788 | 301 | dTHR; |
748a9306 | 302 | I32 off; |
54310121 | 303 | I32 pendoff = 0; |
748a9306 LW |
304 | SV *sv; |
305 | SV **svp = AvARRAY(comppad_name); | |
bbce6d69 | 306 | U32 seq = cop_seqmax; |
748a9306 | 307 | |
11343788 MB |
308 | #ifdef USE_THREADS |
309 | /* | |
310 | * Special case to get lexical (and hence per-thread) @_. | |
311 | * XXX I need to find out how to tell at parse-time whether use | |
312 | * of @_ should refer to a lexical (from a sub) or defgv (global | |
313 | * scope and maybe weird sub-ish things like formats). See | |
314 | * startsub in perly.y. It's possible that @_ could be lexical | |
315 | * (at least from subs) even in non-threaded perl. | |
316 | */ | |
317 | if (strEQ(name, "@_")) | |
318 | return 0; /* success. (NOT_IN_PAD indicates failure) */ | |
319 | #endif /* USE_THREADS */ | |
320 | ||
748a9306 | 321 | /* The one we're looking for is probably just before comppad_name_fill. */ |
4633a7c4 | 322 | for (off = AvFILL(comppad_name); off > 0; off--) { |
a0d0e21e LW |
323 | if ((sv = svp[off]) && |
324 | sv != &sv_undef && | |
54310121 | 325 | (!SvIVX(sv) || |
326 | (seq <= SvIVX(sv) && | |
327 | seq > I_32(SvNVX(sv)))) && | |
a0d0e21e LW |
328 | strEQ(SvPVX(sv), name)) |
329 | { | |
54310121 | 330 | if (SvIVX(sv)) |
331 | return (PADOFFSET)off; | |
332 | pendoff = off; /* this pending def. will override import */ | |
a0d0e21e LW |
333 | } |
334 | } | |
748a9306 LW |
335 | |
336 | /* See if it's in a nested scope */ | |
337 | off = pad_findlex(name, 0, seq, CvOUTSIDE(compcv), cxstack_ix); | |
54310121 | 338 | if (off) { |
339 | /* If there is a pending local definition, this new alias must die */ | |
340 | if (pendoff) | |
341 | SvIVX(AvARRAY(comppad_name)[off]) = seq; | |
11343788 | 342 | return off; /* pad_findlex returns 0 for failure...*/ |
54310121 | 343 | } |
11343788 | 344 | return NOT_IN_PAD; /* ...but we return NOT_IN_PAD for failure */ |
93a17b20 LW |
345 | } |
346 | ||
347 | void | |
348 | pad_leavemy(fill) | |
349 | I32 fill; | |
350 | { | |
351 | I32 off; | |
8990e307 | 352 | SV **svp = AvARRAY(comppad_name); |
93a17b20 | 353 | SV *sv; |
8990e307 LW |
354 | if (min_intro_pending && fill < min_intro_pending) { |
355 | for (off = max_intro_pending; off >= min_intro_pending; off--) { | |
a0d0e21e | 356 | if ((sv = svp[off]) && sv != &sv_undef) |
8990e307 LW |
357 | warn("%s never introduced", SvPVX(sv)); |
358 | } | |
359 | } | |
360 | /* "Deintroduce" my variables that are leaving with this scope. */ | |
361 | for (off = AvFILL(comppad_name); off > fill; off--) { | |
748a9306 | 362 | if ((sv = svp[off]) && sv != &sv_undef && SvIVX(sv) == 999999999) |
463ee0b2 | 363 | SvIVX(sv) = cop_seqmax; |
93a17b20 LW |
364 | } |
365 | } | |
366 | ||
367 | PADOFFSET | |
79072805 LW |
368 | pad_alloc(optype,tmptype) |
369 | I32 optype; | |
ed6116ce | 370 | U32 tmptype; |
79072805 | 371 | { |
11343788 | 372 | dTHR; |
79072805 LW |
373 | SV *sv; |
374 | I32 retval; | |
375 | ||
376 | if (AvARRAY(comppad) != curpad) | |
463ee0b2 | 377 | croak("panic: pad_alloc"); |
a0d0e21e LW |
378 | if (pad_reset_pending) |
379 | pad_reset(); | |
ed6116ce | 380 | if (tmptype & SVs_PADMY) { |
79072805 LW |
381 | do { |
382 | sv = *av_fetch(comppad, AvFILL(comppad) + 1, TRUE); | |
ed6116ce | 383 | } while (SvPADBUSY(sv)); /* need a fresh one */ |
79072805 LW |
384 | retval = AvFILL(comppad); |
385 | } | |
386 | else { | |
bbce6d69 | 387 | SV **names = AvARRAY(comppad_name); |
388 | SSize_t names_fill = AvFILL(comppad_name); | |
389 | for (;;) { | |
390 | /* | |
391 | * "foreach" index vars temporarily become aliases to non-"my" | |
392 | * values. Thus we must skip, not just pad values that are | |
393 | * marked as current pad values, but also those with names. | |
394 | */ | |
395 | if (++padix <= names_fill && | |
396 | (sv = names[padix]) && sv != &sv_undef) | |
397 | continue; | |
398 | sv = *av_fetch(comppad, padix, TRUE); | |
399 | if (!(SvFLAGS(sv) & (SVs_PADTMP|SVs_PADMY))) | |
400 | break; | |
401 | } | |
79072805 LW |
402 | retval = padix; |
403 | } | |
8990e307 | 404 | SvFLAGS(sv) |= tmptype; |
79072805 | 405 | curpad = AvARRAY(comppad); |
11343788 | 406 | #ifdef USE_THREADS |
5dc0d613 MB |
407 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx alloc %ld for %s\n", |
408 | (unsigned long) thr, (unsigned long) curpad, | |
409 | (long) retval, op_name[optype])); | |
11343788 | 410 | #else |
5dc0d613 MB |
411 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad alloc %ld for %s\n", |
412 | (long) retval, op_name[optype])); | |
11343788 | 413 | #endif /* USE_THREADS */ |
79072805 LW |
414 | return (PADOFFSET)retval; |
415 | } | |
416 | ||
417 | SV * | |
a0d0e21e | 418 | #ifndef CAN_PROTOTYPE |
79072805 LW |
419 | pad_sv(po) |
420 | PADOFFSET po; | |
8990e307 LW |
421 | #else |
422 | pad_sv(PADOFFSET po) | |
a0d0e21e | 423 | #endif /* CAN_PROTOTYPE */ |
79072805 | 424 | { |
11343788 MB |
425 | dTHR; |
426 | #ifdef USE_THREADS | |
5dc0d613 MB |
427 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx sv %d\n", |
428 | (unsigned long) thr, (unsigned long) curpad, po)); | |
11343788 | 429 | #else |
79072805 | 430 | if (!po) |
463ee0b2 | 431 | croak("panic: pad_sv po"); |
5dc0d613 | 432 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad sv %d\n", po)); |
11343788 | 433 | #endif /* USE_THREADS */ |
79072805 LW |
434 | return curpad[po]; /* eventually we'll turn this into a macro */ |
435 | } | |
436 | ||
437 | void | |
a0d0e21e | 438 | #ifndef CAN_PROTOTYPE |
79072805 LW |
439 | pad_free(po) |
440 | PADOFFSET po; | |
8990e307 LW |
441 | #else |
442 | pad_free(PADOFFSET po) | |
a0d0e21e | 443 | #endif /* CAN_PROTOTYPE */ |
79072805 | 444 | { |
11343788 | 445 | dTHR; |
a0d0e21e LW |
446 | if (!curpad) |
447 | return; | |
79072805 | 448 | if (AvARRAY(comppad) != curpad) |
463ee0b2 | 449 | croak("panic: pad_free curpad"); |
79072805 | 450 | if (!po) |
463ee0b2 | 451 | croak("panic: pad_free po"); |
11343788 | 452 | #ifdef USE_THREADS |
5dc0d613 MB |
453 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx free %d\n", |
454 | (unsigned long) thr, (unsigned long) curpad, po)); | |
11343788 | 455 | #else |
5dc0d613 | 456 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad free %d\n", po)); |
11343788 | 457 | #endif /* USE_THREADS */ |
a0d0e21e | 458 | if (curpad[po] && curpad[po] != &sv_undef) |
ed6116ce | 459 | SvPADTMP_off(curpad[po]); |
a0d0e21e | 460 | if ((I32)po < padix) |
79072805 LW |
461 | padix = po - 1; |
462 | } | |
463 | ||
464 | void | |
a0d0e21e | 465 | #ifndef CAN_PROTOTYPE |
79072805 LW |
466 | pad_swipe(po) |
467 | PADOFFSET po; | |
8990e307 LW |
468 | #else |
469 | pad_swipe(PADOFFSET po) | |
a0d0e21e | 470 | #endif /* CAN_PROTOTYPE */ |
79072805 | 471 | { |
11343788 | 472 | dTHR; |
79072805 | 473 | if (AvARRAY(comppad) != curpad) |
463ee0b2 | 474 | croak("panic: pad_swipe curpad"); |
79072805 | 475 | if (!po) |
463ee0b2 | 476 | croak("panic: pad_swipe po"); |
11343788 | 477 | #ifdef USE_THREADS |
5dc0d613 MB |
478 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx swipe %d\n", |
479 | (unsigned long) thr, (unsigned long) curpad, po)); | |
11343788 | 480 | #else |
5dc0d613 | 481 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad swipe %d\n", po)); |
11343788 | 482 | #endif /* USE_THREADS */ |
ed6116ce | 483 | SvPADTMP_off(curpad[po]); |
a0d0e21e LW |
484 | curpad[po] = NEWSV(1107,0); |
485 | SvPADTMP_on(curpad[po]); | |
486 | if ((I32)po < padix) | |
79072805 LW |
487 | padix = po - 1; |
488 | } | |
489 | ||
490 | void | |
491 | pad_reset() | |
492 | { | |
11343788 | 493 | dTHR; |
79072805 LW |
494 | register I32 po; |
495 | ||
496 | if (AvARRAY(comppad) != curpad) | |
463ee0b2 | 497 | croak("panic: pad_reset curpad"); |
11343788 | 498 | #ifdef USE_THREADS |
5dc0d613 MB |
499 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx reset\n", |
500 | (unsigned long) thr, (unsigned long) curpad)); | |
11343788 | 501 | #else |
760ac839 | 502 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad reset\n")); |
11343788 | 503 | #endif /* USE_THREADS */ |
748a9306 LW |
504 | if (!tainting) { /* Can't mix tainted and non-tainted temporaries. */ |
505 | for (po = AvMAX(comppad); po > padix_floor; po--) { | |
ff0cee69 | 506 | if (curpad[po] && !SvIMMORTAL(curpad[po])) |
748a9306 LW |
507 | SvPADTMP_off(curpad[po]); |
508 | } | |
509 | padix = padix_floor; | |
79072805 | 510 | } |
a0d0e21e | 511 | pad_reset_pending = FALSE; |
79072805 LW |
512 | } |
513 | ||
514 | /* Destructor */ | |
515 | ||
516 | void | |
11343788 MB |
517 | op_free(o) |
518 | OP *o; | |
79072805 | 519 | { |
85e6fe83 | 520 | register OP *kid, *nextkid; |
79072805 | 521 | |
5dc0d613 | 522 | if (!o || o->op_seq == (U16)-1) |
79072805 LW |
523 | return; |
524 | ||
11343788 MB |
525 | if (o->op_flags & OPf_KIDS) { |
526 | for (kid = cUNOPo->op_first; kid; kid = nextkid) { | |
85e6fe83 | 527 | nextkid = kid->op_sibling; /* Get before next freeing kid */ |
79072805 | 528 | op_free(kid); |
85e6fe83 | 529 | } |
79072805 LW |
530 | } |
531 | ||
11343788 | 532 | switch (o->op_type) { |
8990e307 | 533 | case OP_NULL: |
11343788 | 534 | o->op_targ = 0; /* Was holding old type, if any. */ |
8990e307 | 535 | break; |
a0d0e21e | 536 | case OP_ENTEREVAL: |
11343788 | 537 | o->op_targ = 0; /* Was holding hints. */ |
a0d0e21e | 538 | break; |
a6006777 | 539 | default: |
540 | if (!(op->op_flags & OPf_REF) || (check[op->op_type] != ck_ftst)) | |
541 | break; | |
542 | /* FALL THROUGH */ | |
463ee0b2 | 543 | case OP_GVSV: |
79072805 | 544 | case OP_GV: |
a6006777 | 545 | case OP_AELEMFAST: |
11343788 | 546 | SvREFCNT_dec(cGVOPo->op_gv); |
8990e307 LW |
547 | break; |
548 | case OP_NEXTSTATE: | |
549 | case OP_DBSTATE: | |
5f05dabc | 550 | Safefree(cCOP->cop_label); |
11343788 | 551 | SvREFCNT_dec(cCOPo->cop_filegv); |
79072805 LW |
552 | break; |
553 | case OP_CONST: | |
11343788 | 554 | SvREFCNT_dec(cSVOPo->op_sv); |
79072805 | 555 | break; |
748a9306 LW |
556 | case OP_GOTO: |
557 | case OP_NEXT: | |
558 | case OP_LAST: | |
559 | case OP_REDO: | |
11343788 | 560 | if (o->op_flags & (OPf_SPECIAL|OPf_STACKED|OPf_KIDS)) |
748a9306 LW |
561 | break; |
562 | /* FALL THROUGH */ | |
a0d0e21e | 563 | case OP_TRANS: |
11343788 | 564 | Safefree(cPVOPo->op_pv); |
a0d0e21e LW |
565 | break; |
566 | case OP_SUBST: | |
11343788 | 567 | op_free(cPMOPo->op_pmreplroot); |
a0d0e21e | 568 | /* FALL THROUGH */ |
748a9306 | 569 | case OP_PUSHRE: |
a0d0e21e | 570 | case OP_MATCH: |
11343788 MB |
571 | pregfree(cPMOPo->op_pmregexp); |
572 | SvREFCNT_dec(cPMOPo->op_pmshort); | |
a0d0e21e | 573 | break; |
79072805 LW |
574 | } |
575 | ||
11343788 MB |
576 | if (o->op_targ > 0) |
577 | pad_free(o->op_targ); | |
8990e307 | 578 | |
11343788 | 579 | Safefree(o); |
79072805 LW |
580 | } |
581 | ||
8990e307 | 582 | static void |
11343788 MB |
583 | null(o) |
584 | OP* o; | |
8990e307 | 585 | { |
11343788 MB |
586 | if (o->op_type != OP_NULL && o->op_targ > 0) |
587 | pad_free(o->op_targ); | |
588 | o->op_targ = o->op_type; | |
589 | o->op_type = OP_NULL; | |
590 | o->op_ppaddr = ppaddr[OP_NULL]; | |
8990e307 LW |
591 | } |
592 | ||
79072805 LW |
593 | /* Contextualizers */ |
594 | ||
463ee0b2 | 595 | #define LINKLIST(o) ((o)->op_next ? (o)->op_next : linklist((OP*)o)) |
79072805 LW |
596 | |
597 | OP * | |
11343788 MB |
598 | linklist(o) |
599 | OP *o; | |
79072805 LW |
600 | { |
601 | register OP *kid; | |
602 | ||
11343788 MB |
603 | if (o->op_next) |
604 | return o->op_next; | |
79072805 LW |
605 | |
606 | /* establish postfix order */ | |
11343788 MB |
607 | if (cUNOPo->op_first) { |
608 | o->op_next = LINKLIST(cUNOPo->op_first); | |
609 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) { | |
79072805 LW |
610 | if (kid->op_sibling) |
611 | kid->op_next = LINKLIST(kid->op_sibling); | |
612 | else | |
11343788 | 613 | kid->op_next = o; |
79072805 LW |
614 | } |
615 | } | |
616 | else | |
11343788 | 617 | o->op_next = o; |
79072805 | 618 | |
11343788 | 619 | return o->op_next; |
79072805 LW |
620 | } |
621 | ||
622 | OP * | |
11343788 MB |
623 | scalarkids(o) |
624 | OP *o; | |
79072805 LW |
625 | { |
626 | OP *kid; | |
11343788 MB |
627 | if (o && o->op_flags & OPf_KIDS) { |
628 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
79072805 LW |
629 | scalar(kid); |
630 | } | |
11343788 | 631 | return o; |
79072805 LW |
632 | } |
633 | ||
a0d0e21e | 634 | static OP * |
11343788 MB |
635 | scalarboolean(o) |
636 | OP *o; | |
8990e307 LW |
637 | { |
638 | if (dowarn && | |
11343788 | 639 | o->op_type == OP_SASSIGN && cBINOPo->op_first->op_type == OP_CONST) { |
a0d0e21e LW |
640 | line_t oldline = curcop->cop_line; |
641 | ||
642 | if (copline != NOLINE) | |
643 | curcop->cop_line = copline; | |
644 | warn("Found = in conditional, should be =="); | |
645 | curcop->cop_line = oldline; | |
646 | } | |
11343788 | 647 | return scalar(o); |
8990e307 LW |
648 | } |
649 | ||
650 | OP * | |
11343788 MB |
651 | scalar(o) |
652 | OP *o; | |
79072805 LW |
653 | { |
654 | OP *kid; | |
655 | ||
a0d0e21e | 656 | /* assumes no premature commitment */ |
5dc0d613 MB |
657 | if (!o || (o->op_flags & OPf_WANT) || error_count |
658 | || o->op_type == OP_RETURN) | |
11343788 | 659 | return o; |
79072805 | 660 | |
5dc0d613 | 661 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_SCALAR; |
79072805 | 662 | |
11343788 | 663 | switch (o->op_type) { |
79072805 | 664 | case OP_REPEAT: |
11343788 MB |
665 | if (o->op_private & OPpREPEAT_DOLIST) |
666 | null(((LISTOP*)cBINOPo->op_first)->op_first); | |
667 | scalar(cBINOPo->op_first); | |
8990e307 | 668 | break; |
79072805 LW |
669 | case OP_OR: |
670 | case OP_AND: | |
671 | case OP_COND_EXPR: | |
11343788 | 672 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
8990e307 | 673 | scalar(kid); |
79072805 | 674 | break; |
a0d0e21e | 675 | case OP_SPLIT: |
11343788 | 676 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e LW |
677 | if (!kPMOP->op_pmreplroot) |
678 | deprecate("implicit split to @_"); | |
679 | } | |
680 | /* FALL THROUGH */ | |
79072805 LW |
681 | case OP_MATCH: |
682 | case OP_SUBST: | |
683 | case OP_NULL: | |
8990e307 | 684 | default: |
11343788 MB |
685 | if (o->op_flags & OPf_KIDS) { |
686 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) | |
8990e307 LW |
687 | scalar(kid); |
688 | } | |
79072805 LW |
689 | break; |
690 | case OP_LEAVE: | |
691 | case OP_LEAVETRY: | |
5dc0d613 | 692 | kid = cLISTOPo->op_first; |
54310121 | 693 | scalar(kid); |
694 | while (kid = kid->op_sibling) { | |
695 | if (kid->op_sibling) | |
696 | scalarvoid(kid); | |
697 | else | |
698 | scalar(kid); | |
699 | } | |
700 | curcop = &compiling; | |
701 | break; | |
748a9306 | 702 | case OP_SCOPE: |
79072805 | 703 | case OP_LINESEQ: |
8990e307 | 704 | case OP_LIST: |
11343788 | 705 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
706 | if (kid->op_sibling) |
707 | scalarvoid(kid); | |
708 | else | |
709 | scalar(kid); | |
710 | } | |
93a17b20 | 711 | curcop = &compiling; |
79072805 LW |
712 | break; |
713 | } | |
11343788 | 714 | return o; |
79072805 LW |
715 | } |
716 | ||
717 | OP * | |
11343788 MB |
718 | scalarvoid(o) |
719 | OP *o; | |
79072805 LW |
720 | { |
721 | OP *kid; | |
8990e307 LW |
722 | char* useless = 0; |
723 | SV* sv; | |
79072805 | 724 | |
54310121 | 725 | /* assumes no premature commitment */ |
5dc0d613 MB |
726 | if (!o || (o->op_flags & OPf_WANT) == OPf_WANT_LIST || error_count |
727 | || o->op_type == OP_RETURN) | |
11343788 | 728 | return o; |
79072805 | 729 | |
5dc0d613 | 730 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_VOID; |
79072805 | 731 | |
11343788 | 732 | switch (o->op_type) { |
79072805 | 733 | default: |
11343788 | 734 | if (!(opargs[o->op_type] & OA_FOLDCONST)) |
8990e307 | 735 | break; |
36477c24 | 736 | /* FALL THROUGH */ |
737 | case OP_REPEAT: | |
11343788 | 738 | if (o->op_flags & OPf_STACKED) |
8990e307 LW |
739 | break; |
740 | /* FALL THROUGH */ | |
741 | case OP_GVSV: | |
742 | case OP_WANTARRAY: | |
743 | case OP_GV: | |
744 | case OP_PADSV: | |
745 | case OP_PADAV: | |
746 | case OP_PADHV: | |
747 | case OP_PADANY: | |
748 | case OP_AV2ARYLEN: | |
8990e307 | 749 | case OP_REF: |
a0d0e21e LW |
750 | case OP_REFGEN: |
751 | case OP_SREFGEN: | |
8990e307 LW |
752 | case OP_DEFINED: |
753 | case OP_HEX: | |
754 | case OP_OCT: | |
755 | case OP_LENGTH: | |
756 | case OP_SUBSTR: | |
757 | case OP_VEC: | |
758 | case OP_INDEX: | |
759 | case OP_RINDEX: | |
760 | case OP_SPRINTF: | |
761 | case OP_AELEM: | |
762 | case OP_AELEMFAST: | |
763 | case OP_ASLICE: | |
8990e307 LW |
764 | case OP_HELEM: |
765 | case OP_HSLICE: | |
766 | case OP_UNPACK: | |
767 | case OP_PACK: | |
8990e307 LW |
768 | case OP_JOIN: |
769 | case OP_LSLICE: | |
770 | case OP_ANONLIST: | |
771 | case OP_ANONHASH: | |
772 | case OP_SORT: | |
773 | case OP_REVERSE: | |
774 | case OP_RANGE: | |
775 | case OP_FLIP: | |
776 | case OP_FLOP: | |
777 | case OP_CALLER: | |
778 | case OP_FILENO: | |
779 | case OP_EOF: | |
780 | case OP_TELL: | |
781 | case OP_GETSOCKNAME: | |
782 | case OP_GETPEERNAME: | |
783 | case OP_READLINK: | |
784 | case OP_TELLDIR: | |
785 | case OP_GETPPID: | |
786 | case OP_GETPGRP: | |
787 | case OP_GETPRIORITY: | |
788 | case OP_TIME: | |
789 | case OP_TMS: | |
790 | case OP_LOCALTIME: | |
791 | case OP_GMTIME: | |
792 | case OP_GHBYNAME: | |
793 | case OP_GHBYADDR: | |
794 | case OP_GHOSTENT: | |
795 | case OP_GNBYNAME: | |
796 | case OP_GNBYADDR: | |
797 | case OP_GNETENT: | |
798 | case OP_GPBYNAME: | |
799 | case OP_GPBYNUMBER: | |
800 | case OP_GPROTOENT: | |
801 | case OP_GSBYNAME: | |
802 | case OP_GSBYPORT: | |
803 | case OP_GSERVENT: | |
804 | case OP_GPWNAM: | |
805 | case OP_GPWUID: | |
806 | case OP_GGRNAM: | |
807 | case OP_GGRGID: | |
808 | case OP_GETLOGIN: | |
11343788 MB |
809 | if (!(o->op_private & OPpLVAL_INTRO)) |
810 | useless = op_desc[o->op_type]; | |
8990e307 LW |
811 | break; |
812 | ||
813 | case OP_RV2GV: | |
814 | case OP_RV2SV: | |
815 | case OP_RV2AV: | |
816 | case OP_RV2HV: | |
11343788 MB |
817 | if (!(o->op_private & OPpLVAL_INTRO) && |
818 | (!o->op_sibling || o->op_sibling->op_type != OP_READLINE)) | |
8990e307 LW |
819 | useless = "a variable"; |
820 | break; | |
79072805 | 821 | |
93a17b20 | 822 | case OP_NEXTSTATE: |
8990e307 | 823 | case OP_DBSTATE: |
11343788 | 824 | curcop = ((COP*)o); /* for warning below */ |
93a17b20 LW |
825 | break; |
826 | ||
79072805 | 827 | case OP_CONST: |
11343788 | 828 | sv = cSVOPo->op_sv; |
8990e307 LW |
829 | if (dowarn) { |
830 | useless = "a constant"; | |
831 | if (SvNIOK(sv) && (SvNV(sv) == 0.0 || SvNV(sv) == 1.0)) | |
832 | useless = 0; | |
833 | else if (SvPOK(sv)) { | |
834 | if (strnEQ(SvPVX(sv), "di", 2) || | |
a0d0e21e | 835 | strnEQ(SvPVX(sv), "ds", 2) || |
8990e307 LW |
836 | strnEQ(SvPVX(sv), "ig", 2)) |
837 | useless = 0; | |
838 | } | |
839 | } | |
11343788 | 840 | null(o); /* don't execute a constant */ |
8990e307 | 841 | SvREFCNT_dec(sv); /* don't even remember it */ |
79072805 LW |
842 | break; |
843 | ||
844 | case OP_POSTINC: | |
11343788 MB |
845 | o->op_type = OP_PREINC; /* pre-increment is faster */ |
846 | o->op_ppaddr = ppaddr[OP_PREINC]; | |
79072805 LW |
847 | break; |
848 | ||
849 | case OP_POSTDEC: | |
11343788 MB |
850 | o->op_type = OP_PREDEC; /* pre-decrement is faster */ |
851 | o->op_ppaddr = ppaddr[OP_PREDEC]; | |
79072805 LW |
852 | break; |
853 | ||
79072805 LW |
854 | case OP_OR: |
855 | case OP_AND: | |
856 | case OP_COND_EXPR: | |
11343788 | 857 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
858 | scalarvoid(kid); |
859 | break; | |
5aabfad6 | 860 | |
a0d0e21e | 861 | case OP_NULL: |
11343788 MB |
862 | if (o->op_targ == OP_NEXTSTATE || o->op_targ == OP_DBSTATE) |
863 | curcop = ((COP*)o); /* for warning below */ | |
864 | if (o->op_flags & OPf_STACKED) | |
a0d0e21e | 865 | break; |
5aabfad6 | 866 | /* FALL THROUGH */ |
79072805 LW |
867 | case OP_ENTERTRY: |
868 | case OP_ENTER: | |
869 | case OP_SCALAR: | |
11343788 | 870 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 871 | break; |
54310121 | 872 | /* FALL THROUGH */ |
463ee0b2 | 873 | case OP_SCOPE: |
79072805 LW |
874 | case OP_LEAVE: |
875 | case OP_LEAVETRY: | |
a0d0e21e | 876 | case OP_LEAVELOOP: |
79072805 | 877 | case OP_LINESEQ: |
79072805 | 878 | case OP_LIST: |
11343788 | 879 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
880 | scalarvoid(kid); |
881 | break; | |
c90c0ff4 | 882 | case OP_ENTEREVAL: |
883 | scalarkids(op); | |
884 | break; | |
5aabfad6 | 885 | case OP_REQUIRE: |
c90c0ff4 | 886 | /* all requires must return a boolean value */ |
5aabfad6 | 887 | op->op_flags &= ~OPf_WANT; |
888 | return scalar(op); | |
a0d0e21e | 889 | case OP_SPLIT: |
11343788 | 890 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e LW |
891 | if (!kPMOP->op_pmreplroot) |
892 | deprecate("implicit split to @_"); | |
893 | } | |
894 | break; | |
79072805 | 895 | } |
8990e307 LW |
896 | if (useless && dowarn) |
897 | warn("Useless use of %s in void context", useless); | |
11343788 | 898 | return o; |
79072805 LW |
899 | } |
900 | ||
901 | OP * | |
11343788 MB |
902 | listkids(o) |
903 | OP *o; | |
79072805 LW |
904 | { |
905 | OP *kid; | |
11343788 MB |
906 | if (o && o->op_flags & OPf_KIDS) { |
907 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
79072805 LW |
908 | list(kid); |
909 | } | |
11343788 | 910 | return o; |
79072805 LW |
911 | } |
912 | ||
913 | OP * | |
11343788 MB |
914 | list(o) |
915 | OP *o; | |
79072805 LW |
916 | { |
917 | OP *kid; | |
918 | ||
a0d0e21e | 919 | /* assumes no premature commitment */ |
5dc0d613 MB |
920 | if (!o || (o->op_flags & OPf_WANT) || error_count |
921 | || o->op_type == OP_RETURN) | |
11343788 | 922 | return o; |
79072805 | 923 | |
5dc0d613 | 924 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_LIST; |
79072805 | 925 | |
11343788 | 926 | switch (o->op_type) { |
79072805 LW |
927 | case OP_FLOP: |
928 | case OP_REPEAT: | |
11343788 | 929 | list(cBINOPo->op_first); |
79072805 LW |
930 | break; |
931 | case OP_OR: | |
932 | case OP_AND: | |
933 | case OP_COND_EXPR: | |
11343788 | 934 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
935 | list(kid); |
936 | break; | |
937 | default: | |
938 | case OP_MATCH: | |
939 | case OP_SUBST: | |
940 | case OP_NULL: | |
11343788 | 941 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 942 | break; |
11343788 MB |
943 | if (!o->op_next && cUNOPo->op_first->op_type == OP_FLOP) { |
944 | list(cBINOPo->op_first); | |
945 | return gen_constant_list(o); | |
79072805 LW |
946 | } |
947 | case OP_LIST: | |
11343788 | 948 | listkids(o); |
79072805 LW |
949 | break; |
950 | case OP_LEAVE: | |
951 | case OP_LEAVETRY: | |
5dc0d613 | 952 | kid = cLISTOPo->op_first; |
54310121 | 953 | list(kid); |
954 | while (kid = kid->op_sibling) { | |
955 | if (kid->op_sibling) | |
956 | scalarvoid(kid); | |
957 | else | |
958 | list(kid); | |
959 | } | |
960 | curcop = &compiling; | |
961 | break; | |
748a9306 | 962 | case OP_SCOPE: |
79072805 | 963 | case OP_LINESEQ: |
11343788 | 964 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
965 | if (kid->op_sibling) |
966 | scalarvoid(kid); | |
967 | else | |
968 | list(kid); | |
969 | } | |
93a17b20 | 970 | curcop = &compiling; |
79072805 | 971 | break; |
c90c0ff4 | 972 | case OP_REQUIRE: |
973 | /* all requires must return a boolean value */ | |
974 | op->op_flags &= ~OPf_WANT; | |
975 | return scalar(op); | |
79072805 | 976 | } |
11343788 | 977 | return o; |
79072805 LW |
978 | } |
979 | ||
980 | OP * | |
11343788 MB |
981 | scalarseq(o) |
982 | OP *o; | |
79072805 LW |
983 | { |
984 | OP *kid; | |
985 | ||
11343788 MB |
986 | if (o) { |
987 | if (o->op_type == OP_LINESEQ || | |
988 | o->op_type == OP_SCOPE || | |
989 | o->op_type == OP_LEAVE || | |
990 | o->op_type == OP_LEAVETRY) | |
463ee0b2 | 991 | { |
11343788 | 992 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
ed6116ce | 993 | if (kid->op_sibling) { |
463ee0b2 | 994 | scalarvoid(kid); |
ed6116ce | 995 | } |
463ee0b2 LW |
996 | } |
997 | curcop = &compiling; | |
79072805 | 998 | } |
11343788 | 999 | o->op_flags &= ~OPf_PARENS; |
85e6fe83 | 1000 | if (hints & HINT_BLOCK_SCOPE) |
11343788 | 1001 | o->op_flags |= OPf_PARENS; |
79072805 | 1002 | } |
8990e307 | 1003 | else |
11343788 MB |
1004 | o = newOP(OP_STUB, 0); |
1005 | return o; | |
79072805 LW |
1006 | } |
1007 | ||
a0d0e21e | 1008 | static OP * |
11343788 MB |
1009 | modkids(o, type) |
1010 | OP *o; | |
79072805 LW |
1011 | I32 type; |
1012 | { | |
1013 | OP *kid; | |
11343788 MB |
1014 | if (o && o->op_flags & OPf_KIDS) { |
1015 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
463ee0b2 | 1016 | mod(kid, type); |
79072805 | 1017 | } |
11343788 | 1018 | return o; |
79072805 LW |
1019 | } |
1020 | ||
463ee0b2 | 1021 | static I32 modcount; |
79072805 LW |
1022 | |
1023 | OP * | |
11343788 MB |
1024 | mod(o, type) |
1025 | OP *o; | |
79072805 LW |
1026 | I32 type; |
1027 | { | |
11343788 | 1028 | dTHR; |
79072805 LW |
1029 | OP *kid; |
1030 | SV *sv; | |
1031 | ||
11343788 MB |
1032 | if (!o || error_count) |
1033 | return o; | |
79072805 | 1034 | |
11343788 | 1035 | switch (o->op_type) { |
68dc0745 | 1036 | case OP_UNDEF: |
5dc0d613 | 1037 | return o; |
a0d0e21e | 1038 | case OP_CONST: |
11343788 | 1039 | if (!(o->op_private & (OPpCONST_ARYBASE))) |
a0d0e21e LW |
1040 | goto nomod; |
1041 | if (eval_start && eval_start->op_type == OP_CONST) { | |
1042 | compiling.cop_arybase = (I32)SvIV(((SVOP*)eval_start)->op_sv); | |
1043 | eval_start = 0; | |
1044 | } | |
1045 | else if (!type) { | |
1046 | SAVEI32(compiling.cop_arybase); | |
748a9306 | 1047 | compiling.cop_arybase = 0; |
a0d0e21e LW |
1048 | } |
1049 | else if (type == OP_REFGEN) | |
1050 | goto nomod; | |
1051 | else | |
1052 | croak("That use of $[ is unsupported"); | |
1053 | break; | |
5f05dabc | 1054 | case OP_STUB: |
1055 | if (op->op_flags & OPf_PARENS) | |
1056 | break; | |
1057 | goto nomod; | |
a0d0e21e LW |
1058 | case OP_ENTERSUB: |
1059 | if ((type == OP_UNDEF || type == OP_REFGEN) && | |
11343788 MB |
1060 | !(o->op_flags & OPf_STACKED)) { |
1061 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
1062 | o->op_ppaddr = ppaddr[OP_RV2CV]; | |
1063 | assert(cUNOPo->op_first->op_type == OP_NULL); | |
1064 | null(((LISTOP*)cUNOPo->op_first)->op_first);/* disable pushmark */ | |
79072805 LW |
1065 | break; |
1066 | } | |
1067 | /* FALL THROUGH */ | |
1068 | default: | |
a0d0e21e LW |
1069 | nomod: |
1070 | /* grep, foreach, subcalls, refgen */ | |
1071 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) | |
1072 | break; | |
46fc3d4c | 1073 | yyerror(form("Can't modify %s in %s", |
5dc0d613 | 1074 | op_desc[o->op_type], |
46fc3d4c | 1075 | type ? op_desc[type] : "local")); |
11343788 | 1076 | return o; |
79072805 | 1077 | |
a0d0e21e LW |
1078 | case OP_PREINC: |
1079 | case OP_PREDEC: | |
1080 | case OP_POW: | |
1081 | case OP_MULTIPLY: | |
1082 | case OP_DIVIDE: | |
1083 | case OP_MODULO: | |
1084 | case OP_REPEAT: | |
1085 | case OP_ADD: | |
1086 | case OP_SUBTRACT: | |
1087 | case OP_CONCAT: | |
1088 | case OP_LEFT_SHIFT: | |
1089 | case OP_RIGHT_SHIFT: | |
1090 | case OP_BIT_AND: | |
1091 | case OP_BIT_XOR: | |
1092 | case OP_BIT_OR: | |
1093 | case OP_I_MULTIPLY: | |
1094 | case OP_I_DIVIDE: | |
1095 | case OP_I_MODULO: | |
1096 | case OP_I_ADD: | |
1097 | case OP_I_SUBTRACT: | |
11343788 | 1098 | if (!(o->op_flags & OPf_STACKED)) |
a0d0e21e LW |
1099 | goto nomod; |
1100 | modcount++; | |
1101 | break; | |
1102 | ||
79072805 | 1103 | case OP_COND_EXPR: |
11343788 | 1104 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 | 1105 | mod(kid, type); |
79072805 LW |
1106 | break; |
1107 | ||
1108 | case OP_RV2AV: | |
1109 | case OP_RV2HV: | |
11343788 | 1110 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) { |
748a9306 | 1111 | modcount = 10000; |
11343788 | 1112 | return o; /* Treat \(@foo) like ordinary list. */ |
748a9306 LW |
1113 | } |
1114 | /* FALL THROUGH */ | |
79072805 | 1115 | case OP_RV2GV: |
5dc0d613 | 1116 | if (scalar_mod_type(o, type)) |
3fe9a6f1 | 1117 | goto nomod; |
11343788 | 1118 | ref(cUNOPo->op_first, o->op_type); |
79072805 LW |
1119 | /* FALL THROUGH */ |
1120 | case OP_AASSIGN: | |
1121 | case OP_ASLICE: | |
1122 | case OP_HSLICE: | |
93a17b20 LW |
1123 | case OP_NEXTSTATE: |
1124 | case OP_DBSTATE: | |
a0d0e21e LW |
1125 | case OP_REFGEN: |
1126 | case OP_CHOMP: | |
463ee0b2 | 1127 | modcount = 10000; |
79072805 | 1128 | break; |
463ee0b2 | 1129 | case OP_RV2SV: |
11343788 | 1130 | if (!type && cUNOPo->op_first->op_type != OP_GV) |
4633a7c4 | 1131 | croak("Can't localize a reference"); |
11343788 | 1132 | ref(cUNOPo->op_first, o->op_type); |
463ee0b2 | 1133 | /* FALL THROUGH */ |
79072805 | 1134 | case OP_GV: |
463ee0b2 LW |
1135 | case OP_AV2ARYLEN: |
1136 | case OP_SASSIGN: | |
8990e307 LW |
1137 | case OP_AELEMFAST: |
1138 | modcount++; | |
1139 | break; | |
1140 | ||
748a9306 LW |
1141 | case OP_PADAV: |
1142 | case OP_PADHV: | |
1143 | modcount = 10000; | |
58e0a6ae GS |
1144 | if (type == OP_REFGEN && op->op_flags & OPf_PARENS) |
1145 | return op; /* Treat \(@foo) like ordinary list. */ | |
3fe9a6f1 | 1146 | if (scalar_mod_type(op, type)) |
1147 | goto nomod; | |
748a9306 LW |
1148 | /* FALL THROUGH */ |
1149 | case OP_PADSV: | |
1150 | modcount++; | |
1151 | if (!type) | |
1152 | croak("Can't localize lexical variable %s", | |
11343788 | 1153 | SvPV(*av_fetch(comppad_name, o->op_targ, 4), na)); |
463ee0b2 LW |
1154 | break; |
1155 | ||
748a9306 LW |
1156 | case OP_PUSHMARK: |
1157 | break; | |
a0d0e21e | 1158 | |
69969c6f SB |
1159 | case OP_KEYS: |
1160 | if (type != OP_SASSIGN) | |
1161 | goto nomod; | |
5f05dabc | 1162 | /* FALL THROUGH */ |
a0d0e21e | 1163 | case OP_POS: |
463ee0b2 | 1164 | case OP_VEC: |
a0d0e21e | 1165 | case OP_SUBSTR: |
11343788 MB |
1166 | pad_free(o->op_targ); |
1167 | o->op_targ = pad_alloc(o->op_type, SVs_PADMY); | |
5dc0d613 | 1168 | assert(SvTYPE(PAD_SV(o->op_targ)) == SVt_NULL); |
11343788 MB |
1169 | if (o->op_flags & OPf_KIDS) |
1170 | mod(cBINOPo->op_first->op_sibling, type); | |
463ee0b2 | 1171 | break; |
a0d0e21e | 1172 | |
463ee0b2 LW |
1173 | case OP_AELEM: |
1174 | case OP_HELEM: | |
11343788 | 1175 | ref(cBINOPo->op_first, o->op_type); |
68dc0745 | 1176 | if (type == OP_ENTERSUB && |
5dc0d613 MB |
1177 | !(o->op_private & (OPpLVAL_INTRO | OPpDEREF))) |
1178 | o->op_private |= OPpLVAL_DEFER; | |
a0d0e21e | 1179 | modcount++; |
463ee0b2 LW |
1180 | break; |
1181 | ||
1182 | case OP_SCOPE: | |
1183 | case OP_LEAVE: | |
1184 | case OP_ENTER: | |
11343788 MB |
1185 | if (o->op_flags & OPf_KIDS) |
1186 | mod(cLISTOPo->op_last, type); | |
a0d0e21e LW |
1187 | break; |
1188 | ||
1189 | case OP_NULL: | |
11343788 | 1190 | if (!(o->op_flags & OPf_KIDS)) |
463ee0b2 | 1191 | break; |
11343788 MB |
1192 | if (o->op_targ != OP_LIST) { |
1193 | mod(cBINOPo->op_first, type); | |
a0d0e21e LW |
1194 | break; |
1195 | } | |
1196 | /* FALL THROUGH */ | |
463ee0b2 | 1197 | case OP_LIST: |
11343788 | 1198 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1199 | mod(kid, type); |
1200 | break; | |
1201 | } | |
11343788 | 1202 | o->op_flags |= OPf_MOD; |
a0d0e21e LW |
1203 | |
1204 | if (type == OP_AASSIGN || type == OP_SASSIGN) | |
11343788 | 1205 | o->op_flags |= OPf_SPECIAL|OPf_REF; |
a0d0e21e | 1206 | else if (!type) { |
11343788 MB |
1207 | o->op_private |= OPpLVAL_INTRO; |
1208 | o->op_flags &= ~OPf_SPECIAL; | |
463ee0b2 | 1209 | } |
a0d0e21e | 1210 | else if (type != OP_GREPSTART && type != OP_ENTERSUB) |
11343788 MB |
1211 | o->op_flags |= OPf_REF; |
1212 | return o; | |
463ee0b2 LW |
1213 | } |
1214 | ||
3fe9a6f1 | 1215 | static bool |
1216 | scalar_mod_type(op, type) | |
1217 | OP *op; | |
1218 | I32 type; | |
1219 | { | |
1220 | switch (type) { | |
1221 | case OP_SASSIGN: | |
1222 | if (op->op_type == OP_RV2GV) | |
1223 | return FALSE; | |
1224 | /* FALL THROUGH */ | |
1225 | case OP_PREINC: | |
1226 | case OP_PREDEC: | |
1227 | case OP_POSTINC: | |
1228 | case OP_POSTDEC: | |
1229 | case OP_I_PREINC: | |
1230 | case OP_I_PREDEC: | |
1231 | case OP_I_POSTINC: | |
1232 | case OP_I_POSTDEC: | |
1233 | case OP_POW: | |
1234 | case OP_MULTIPLY: | |
1235 | case OP_DIVIDE: | |
1236 | case OP_MODULO: | |
1237 | case OP_REPEAT: | |
1238 | case OP_ADD: | |
1239 | case OP_SUBTRACT: | |
1240 | case OP_I_MULTIPLY: | |
1241 | case OP_I_DIVIDE: | |
1242 | case OP_I_MODULO: | |
1243 | case OP_I_ADD: | |
1244 | case OP_I_SUBTRACT: | |
1245 | case OP_LEFT_SHIFT: | |
1246 | case OP_RIGHT_SHIFT: | |
1247 | case OP_BIT_AND: | |
1248 | case OP_BIT_XOR: | |
1249 | case OP_BIT_OR: | |
1250 | case OP_CONCAT: | |
1251 | case OP_SUBST: | |
1252 | case OP_TRANS: | |
1253 | case OP_ANDASSIGN: /* may work later */ | |
1254 | case OP_ORASSIGN: /* may work later */ | |
1255 | return TRUE; | |
1256 | default: | |
1257 | return FALSE; | |
1258 | } | |
1259 | } | |
1260 | ||
463ee0b2 | 1261 | OP * |
11343788 MB |
1262 | refkids(o, type) |
1263 | OP *o; | |
463ee0b2 LW |
1264 | I32 type; |
1265 | { | |
1266 | OP *kid; | |
11343788 MB |
1267 | if (o && o->op_flags & OPf_KIDS) { |
1268 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
463ee0b2 LW |
1269 | ref(kid, type); |
1270 | } | |
11343788 | 1271 | return o; |
463ee0b2 LW |
1272 | } |
1273 | ||
1274 | OP * | |
11343788 MB |
1275 | ref(o, type) |
1276 | OP *o; | |
463ee0b2 LW |
1277 | I32 type; |
1278 | { | |
1279 | OP *kid; | |
463ee0b2 | 1280 | |
11343788 MB |
1281 | if (!o || error_count) |
1282 | return o; | |
463ee0b2 | 1283 | |
11343788 | 1284 | switch (o->op_type) { |
a0d0e21e LW |
1285 | case OP_ENTERSUB: |
1286 | if ((type == OP_DEFINED) && | |
11343788 MB |
1287 | !(o->op_flags & OPf_STACKED)) { |
1288 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
1289 | o->op_ppaddr = ppaddr[OP_RV2CV]; | |
1290 | assert(cUNOPo->op_first->op_type == OP_NULL); | |
1291 | null(((LISTOP*)cUNOPo->op_first)->op_first); /* disable pushmark */ | |
1292 | o->op_flags |= OPf_SPECIAL; | |
8990e307 LW |
1293 | } |
1294 | break; | |
1295 | ||
463ee0b2 | 1296 | case OP_COND_EXPR: |
11343788 | 1297 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1298 | ref(kid, type); |
1299 | break; | |
8990e307 | 1300 | case OP_RV2SV: |
11343788 | 1301 | ref(cUNOPo->op_first, o->op_type); |
4633a7c4 LW |
1302 | /* FALL THROUGH */ |
1303 | case OP_PADSV: | |
5f05dabc | 1304 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1305 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1306 | : type == OP_RV2HV ? OPpDEREF_HV | |
1307 | : OPpDEREF_SV); | |
11343788 | 1308 | o->op_flags |= OPf_MOD; |
a0d0e21e | 1309 | } |
8990e307 LW |
1310 | break; |
1311 | ||
463ee0b2 LW |
1312 | case OP_RV2AV: |
1313 | case OP_RV2HV: | |
11343788 | 1314 | o->op_flags |= OPf_REF; |
8990e307 | 1315 | /* FALL THROUGH */ |
463ee0b2 | 1316 | case OP_RV2GV: |
11343788 | 1317 | ref(cUNOPo->op_first, o->op_type); |
463ee0b2 | 1318 | break; |
8990e307 | 1319 | |
463ee0b2 LW |
1320 | case OP_PADAV: |
1321 | case OP_PADHV: | |
11343788 | 1322 | o->op_flags |= OPf_REF; |
79072805 | 1323 | break; |
8990e307 LW |
1324 | |
1325 | case OP_SCALAR: | |
79072805 | 1326 | case OP_NULL: |
11343788 | 1327 | if (!(o->op_flags & OPf_KIDS)) |
463ee0b2 | 1328 | break; |
11343788 | 1329 | ref(cBINOPo->op_first, type); |
79072805 LW |
1330 | break; |
1331 | case OP_AELEM: | |
1332 | case OP_HELEM: | |
11343788 | 1333 | ref(cBINOPo->op_first, o->op_type); |
5f05dabc | 1334 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1335 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1336 | : type == OP_RV2HV ? OPpDEREF_HV | |
1337 | : OPpDEREF_SV); | |
11343788 | 1338 | o->op_flags |= OPf_MOD; |
8990e307 | 1339 | } |
79072805 LW |
1340 | break; |
1341 | ||
463ee0b2 | 1342 | case OP_SCOPE: |
79072805 LW |
1343 | case OP_LEAVE: |
1344 | case OP_ENTER: | |
8990e307 | 1345 | case OP_LIST: |
11343788 | 1346 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1347 | break; |
11343788 | 1348 | ref(cLISTOPo->op_last, type); |
79072805 | 1349 | break; |
a0d0e21e LW |
1350 | default: |
1351 | break; | |
79072805 | 1352 | } |
11343788 | 1353 | return scalar(o); |
8990e307 | 1354 | |
79072805 LW |
1355 | } |
1356 | ||
1357 | OP * | |
11343788 MB |
1358 | my(o) |
1359 | OP *o; | |
93a17b20 LW |
1360 | { |
1361 | OP *kid; | |
93a17b20 LW |
1362 | I32 type; |
1363 | ||
11343788 MB |
1364 | if (!o || error_count) |
1365 | return o; | |
93a17b20 | 1366 | |
11343788 | 1367 | type = o->op_type; |
93a17b20 | 1368 | if (type == OP_LIST) { |
11343788 | 1369 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
93a17b20 LW |
1370 | my(kid); |
1371 | } | |
1372 | else if (type != OP_PADSV && | |
1373 | type != OP_PADAV && | |
1374 | type != OP_PADHV && | |
1375 | type != OP_PUSHMARK) | |
1376 | { | |
5dc0d613 | 1377 | yyerror(form("Can't declare %s in my", op_desc[o->op_type])); |
11343788 | 1378 | return o; |
93a17b20 | 1379 | } |
11343788 MB |
1380 | o->op_flags |= OPf_MOD; |
1381 | o->op_private |= OPpLVAL_INTRO; | |
1382 | return o; | |
93a17b20 LW |
1383 | } |
1384 | ||
1385 | OP * | |
79072805 LW |
1386 | sawparens(o) |
1387 | OP *o; | |
1388 | { | |
1389 | if (o) | |
1390 | o->op_flags |= OPf_PARENS; | |
1391 | return o; | |
1392 | } | |
1393 | ||
1394 | OP * | |
1395 | bind_match(type, left, right) | |
1396 | I32 type; | |
1397 | OP *left; | |
1398 | OP *right; | |
1399 | { | |
11343788 | 1400 | OP *o; |
79072805 | 1401 | |
2ae324a7 | 1402 | if (dowarn && |
1403 | (left->op_type == OP_RV2AV || | |
1404 | left->op_type == OP_RV2HV || | |
1405 | left->op_type == OP_PADAV || | |
1406 | left->op_type == OP_PADHV)) { | |
1407 | char *desc = op_desc[(right->op_type == OP_SUBST || | |
1408 | right->op_type == OP_TRANS) | |
1409 | ? right->op_type : OP_MATCH]; | |
1410 | char *sample = ((left->op_type == OP_RV2AV || | |
1411 | left->op_type == OP_PADAV) | |
1412 | ? "@array" : "%hash"); | |
1413 | warn("Applying %s to %s will act on scalar(%s)", desc, sample, sample); | |
1414 | } | |
1415 | ||
79072805 LW |
1416 | if (right->op_type == OP_MATCH || |
1417 | right->op_type == OP_SUBST || | |
1418 | right->op_type == OP_TRANS) { | |
1419 | right->op_flags |= OPf_STACKED; | |
1420 | if (right->op_type != OP_MATCH) | |
463ee0b2 | 1421 | left = mod(left, right->op_type); |
79072805 | 1422 | if (right->op_type == OP_TRANS) |
11343788 | 1423 | o = newBINOP(OP_NULL, OPf_STACKED, scalar(left), right); |
79072805 | 1424 | else |
11343788 | 1425 | o = prepend_elem(right->op_type, scalar(left), right); |
79072805 | 1426 | if (type == OP_NOT) |
11343788 MB |
1427 | return newUNOP(OP_NOT, 0, scalar(o)); |
1428 | return o; | |
79072805 LW |
1429 | } |
1430 | else | |
1431 | return bind_match(type, left, | |
1432 | pmruntime(newPMOP(OP_MATCH, 0), right, Nullop)); | |
1433 | } | |
1434 | ||
1435 | OP * | |
11343788 MB |
1436 | invert(o) |
1437 | OP *o; | |
79072805 | 1438 | { |
11343788 MB |
1439 | if (!o) |
1440 | return o; | |
79072805 | 1441 | /* XXX need to optimize away NOT NOT here? Or do we let optimizer do it? */ |
11343788 | 1442 | return newUNOP(OP_NOT, OPf_SPECIAL, scalar(o)); |
79072805 LW |
1443 | } |
1444 | ||
1445 | OP * | |
1446 | scope(o) | |
1447 | OP *o; | |
1448 | { | |
1449 | if (o) { | |
4633a7c4 | 1450 | if (o->op_flags & OPf_PARENS || perldb || tainting) { |
463ee0b2 LW |
1451 | o = prepend_elem(OP_LINESEQ, newOP(OP_ENTER, 0), o); |
1452 | o->op_type = OP_LEAVE; | |
1453 | o->op_ppaddr = ppaddr[OP_LEAVE]; | |
1454 | } | |
1455 | else { | |
1456 | if (o->op_type == OP_LINESEQ) { | |
1457 | OP *kid; | |
1458 | o->op_type = OP_SCOPE; | |
1459 | o->op_ppaddr = ppaddr[OP_SCOPE]; | |
1460 | kid = ((LISTOP*)o)->op_first; | |
748a9306 LW |
1461 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE){ |
1462 | SvREFCNT_dec(((COP*)kid)->cop_filegv); | |
8990e307 | 1463 | null(kid); |
748a9306 | 1464 | } |
463ee0b2 LW |
1465 | } |
1466 | else | |
748a9306 | 1467 | o = newLISTOP(OP_SCOPE, 0, o, Nullop); |
463ee0b2 | 1468 | } |
79072805 LW |
1469 | } |
1470 | return o; | |
1471 | } | |
1472 | ||
a0d0e21e | 1473 | int |
55497cff | 1474 | block_start(full) |
1475 | int full; | |
79072805 | 1476 | { |
11343788 | 1477 | dTHR; |
a0d0e21e | 1478 | int retval = savestack_ix; |
55497cff | 1479 | SAVEI32(comppad_name_floor); |
1480 | if (full) { | |
1481 | if ((comppad_name_fill = AvFILL(comppad_name)) > 0) | |
1482 | comppad_name_floor = comppad_name_fill; | |
1483 | else | |
1484 | comppad_name_floor = 0; | |
1485 | } | |
1486 | SAVEI32(min_intro_pending); | |
1487 | SAVEI32(max_intro_pending); | |
a0d0e21e | 1488 | min_intro_pending = 0; |
55497cff | 1489 | SAVEI32(comppad_name_fill); |
1490 | SAVEI32(padix_floor); | |
a0d0e21e LW |
1491 | padix_floor = padix; |
1492 | pad_reset_pending = FALSE; | |
55497cff | 1493 | SAVEI32(hints); |
a0d0e21e LW |
1494 | hints &= ~HINT_BLOCK_SCOPE; |
1495 | return retval; | |
1496 | } | |
1497 | ||
1498 | OP* | |
36477c24 | 1499 | block_end(floor, seq) |
1500 | I32 floor; | |
a0d0e21e LW |
1501 | OP* seq; |
1502 | { | |
11343788 | 1503 | dTHR; |
a0d0e21e LW |
1504 | int needblockscope = hints & HINT_BLOCK_SCOPE; |
1505 | OP* retval = scalarseq(seq); | |
a0d0e21e LW |
1506 | LEAVE_SCOPE(floor); |
1507 | pad_reset_pending = FALSE; | |
1508 | if (needblockscope) | |
1509 | hints |= HINT_BLOCK_SCOPE; /* propagate out */ | |
1510 | pad_leavemy(comppad_name_fill); | |
bbce6d69 | 1511 | cop_seqmax++; |
a0d0e21e LW |
1512 | return retval; |
1513 | } | |
1514 | ||
1515 | void | |
11343788 MB |
1516 | newPROG(o) |
1517 | OP *o; | |
a0d0e21e | 1518 | { |
11343788 | 1519 | dTHR; |
a0d0e21e | 1520 | if (in_eval) { |
5dc0d613 | 1521 | eval_root = newUNOP(OP_LEAVEEVAL, ((in_eval & 4) ? OPf_SPECIAL : 0), o); |
a0d0e21e LW |
1522 | eval_start = linklist(eval_root); |
1523 | eval_root->op_next = 0; | |
1524 | peep(eval_start); | |
1525 | } | |
1526 | else { | |
5dc0d613 | 1527 | if (!o) |
a0d0e21e | 1528 | return; |
11343788 | 1529 | main_root = scope(sawparens(scalarvoid(o))); |
a0d0e21e LW |
1530 | curcop = &compiling; |
1531 | main_start = LINKLIST(main_root); | |
1532 | main_root->op_next = 0; | |
1533 | peep(main_start); | |
748a9306 | 1534 | compcv = 0; |
3841441e | 1535 | |
4fdae800 | 1536 | /* Register with debugger */ |
3841441e CS |
1537 | if (perldb) { |
1538 | CV *cv = perl_get_cv("DB::postponed", FALSE); | |
3841441e CS |
1539 | if (cv) { |
1540 | dSP; | |
1541 | PUSHMARK(sp); | |
1542 | XPUSHs((SV*)compiling.cop_filegv); | |
1543 | PUTBACK; | |
1544 | perl_call_sv((SV*)cv, G_DISCARD); | |
1545 | } | |
1546 | } | |
79072805 | 1547 | } |
79072805 LW |
1548 | } |
1549 | ||
1550 | OP * | |
93a17b20 | 1551 | localize(o, lex) |
79072805 | 1552 | OP *o; |
93a17b20 | 1553 | I32 lex; |
79072805 LW |
1554 | { |
1555 | if (o->op_flags & OPf_PARENS) | |
1556 | list(o); | |
8990e307 | 1557 | else { |
79072805 | 1558 | scalar(o); |
8990e307 LW |
1559 | if (dowarn && bufptr > oldbufptr && bufptr[-1] == ',') { |
1560 | char *s; | |
1561 | for (s = bufptr; *s && (isALNUM(*s) || strchr("@$%, ",*s)); s++) ; | |
a0d0e21e | 1562 | if (*s == ';' || *s == '=') |
8990e307 LW |
1563 | warn("Parens missing around \"%s\" list", lex ? "my" : "local"); |
1564 | } | |
1565 | } | |
93a17b20 | 1566 | in_my = FALSE; |
c750a3ec | 1567 | in_my_stash = Nullhv; |
93a17b20 LW |
1568 | if (lex) |
1569 | return my(o); | |
1570 | else | |
463ee0b2 | 1571 | return mod(o, OP_NULL); /* a bit kludgey */ |
79072805 LW |
1572 | } |
1573 | ||
1574 | OP * | |
1575 | jmaybe(o) | |
1576 | OP *o; | |
1577 | { | |
1578 | if (o->op_type == OP_LIST) { | |
1579 | o = convert(OP_JOIN, 0, | |
1580 | prepend_elem(OP_LIST, | |
85e6fe83 | 1581 | newSVREF(newGVOP(OP_GV, 0, gv_fetchpv(";", TRUE, SVt_PV))), |
79072805 LW |
1582 | o)); |
1583 | } | |
1584 | return o; | |
1585 | } | |
1586 | ||
1587 | OP * | |
1588 | fold_constants(o) | |
1589 | register OP *o; | |
1590 | { | |
11343788 | 1591 | dTHR; |
79072805 LW |
1592 | register OP *curop; |
1593 | I32 type = o->op_type; | |
748a9306 | 1594 | SV *sv; |
79072805 LW |
1595 | |
1596 | if (opargs[type] & OA_RETSCALAR) | |
1597 | scalar(o); | |
1598 | if (opargs[type] & OA_TARGET) | |
ed6116ce | 1599 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 | 1600 | |
85e6fe83 | 1601 | if ((opargs[type] & OA_OTHERINT) && (hints & HINT_INTEGER)) |
a0d0e21e | 1602 | o->op_ppaddr = ppaddr[type = ++(o->op_type)]; |
85e6fe83 | 1603 | |
79072805 LW |
1604 | if (!(opargs[type] & OA_FOLDCONST)) |
1605 | goto nope; | |
1606 | ||
a0d0e21e LW |
1607 | if (error_count) |
1608 | goto nope; /* Don't try to run w/ errors */ | |
1609 | ||
79072805 | 1610 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
93a17b20 LW |
1611 | if (curop->op_type != OP_CONST && |
1612 | curop->op_type != OP_LIST && | |
1613 | curop->op_type != OP_SCALAR && | |
a0d0e21e | 1614 | curop->op_type != OP_NULL && |
93a17b20 | 1615 | curop->op_type != OP_PUSHMARK) { |
79072805 LW |
1616 | goto nope; |
1617 | } | |
1618 | } | |
1619 | ||
1620 | curop = LINKLIST(o); | |
1621 | o->op_next = 0; | |
1622 | op = curop; | |
8da795c6 | 1623 | runops(); |
748a9306 LW |
1624 | sv = *(stack_sp--); |
1625 | if (o->op_targ && sv == PAD_SV(o->op_targ)) /* grab pad temp? */ | |
79072805 | 1626 | pad_swipe(o->op_targ); |
748a9306 LW |
1627 | else if (SvTEMP(sv)) { /* grab mortal temp? */ |
1628 | (void)SvREFCNT_inc(sv); | |
1629 | SvTEMP_off(sv); | |
85e6fe83 | 1630 | } |
79072805 LW |
1631 | op_free(o); |
1632 | if (type == OP_RV2GV) | |
b1cb66bf | 1633 | return newGVOP(OP_GV, 0, (GV*)sv); |
748a9306 LW |
1634 | else { |
1635 | if ((SvFLAGS(sv) & (SVf_IOK|SVf_NOK|SVf_POK)) == SVf_NOK) { | |
1636 | IV iv = SvIV(sv); | |
1637 | if ((double)iv == SvNV(sv)) { /* can we smush double to int */ | |
1638 | SvREFCNT_dec(sv); | |
1639 | sv = newSViv(iv); | |
1640 | } | |
b1cb66bf | 1641 | else |
1642 | SvIOK_off(sv); /* undo SvIV() damage */ | |
748a9306 LW |
1643 | } |
1644 | return newSVOP(OP_CONST, 0, sv); | |
1645 | } | |
79072805 LW |
1646 | |
1647 | nope: | |
1648 | if (!(opargs[type] & OA_OTHERINT)) | |
1649 | return o; | |
79072805 | 1650 | |
85e6fe83 | 1651 | if (!(hints & HINT_INTEGER)) { |
a0d0e21e | 1652 | if (type == OP_DIVIDE || !(o->op_flags & OPf_KIDS)) |
85e6fe83 LW |
1653 | return o; |
1654 | ||
1655 | for (curop = ((UNOP*)o)->op_first; curop; curop = curop->op_sibling) { | |
1656 | if (curop->op_type == OP_CONST) { | |
b1cb66bf | 1657 | if (SvIOK(((SVOP*)curop)->op_sv)) |
85e6fe83 LW |
1658 | continue; |
1659 | return o; | |
1660 | } | |
1661 | if (opargs[curop->op_type] & OA_RETINTEGER) | |
79072805 LW |
1662 | continue; |
1663 | return o; | |
1664 | } | |
a0d0e21e | 1665 | o->op_ppaddr = ppaddr[++(o->op_type)]; |
79072805 LW |
1666 | } |
1667 | ||
79072805 LW |
1668 | return o; |
1669 | } | |
1670 | ||
1671 | OP * | |
1672 | gen_constant_list(o) | |
1673 | register OP *o; | |
1674 | { | |
11343788 | 1675 | dTHR; |
79072805 | 1676 | register OP *curop; |
79072805 | 1677 | I32 oldtmps_floor = tmps_floor; |
79072805 | 1678 | |
a0d0e21e LW |
1679 | list(o); |
1680 | if (error_count) | |
1681 | return o; /* Don't attempt to run with errors */ | |
1682 | ||
1683 | op = curop = LINKLIST(o); | |
1684 | o->op_next = 0; | |
11343788 | 1685 | pp_pushmark(ARGS); |
8da795c6 | 1686 | runops(); |
a0d0e21e | 1687 | op = curop; |
11343788 | 1688 | pp_anonlist(ARGS); |
79072805 | 1689 | tmps_floor = oldtmps_floor; |
79072805 LW |
1690 | |
1691 | o->op_type = OP_RV2AV; | |
1692 | o->op_ppaddr = ppaddr[OP_RV2AV]; | |
79072805 | 1693 | curop = ((UNOP*)o)->op_first; |
a0d0e21e | 1694 | ((UNOP*)o)->op_first = newSVOP(OP_CONST, 0, SvREFCNT_inc(*stack_sp--)); |
79072805 | 1695 | op_free(curop); |
79072805 LW |
1696 | linklist(o); |
1697 | return list(o); | |
1698 | } | |
1699 | ||
1700 | OP * | |
11343788 | 1701 | convert(type, flags, o) |
79072805 LW |
1702 | I32 type; |
1703 | I32 flags; | |
11343788 | 1704 | OP* o; |
79072805 LW |
1705 | { |
1706 | OP *kid; | |
a0d0e21e | 1707 | OP *last = 0; |
79072805 | 1708 | |
11343788 MB |
1709 | if (!o || o->op_type != OP_LIST) |
1710 | o = newLISTOP(OP_LIST, 0, o, Nullop); | |
748a9306 | 1711 | else |
5dc0d613 | 1712 | o->op_flags &= ~OPf_WANT; |
79072805 | 1713 | |
8990e307 | 1714 | if (!(opargs[type] & OA_MARK)) |
11343788 | 1715 | null(cLISTOPo->op_first); |
8990e307 | 1716 | |
11343788 MB |
1717 | o->op_type = type; |
1718 | o->op_ppaddr = ppaddr[type]; | |
1719 | o->op_flags |= flags; | |
79072805 | 1720 | |
11343788 MB |
1721 | o = CHECKOP(type, o); |
1722 | if (o->op_type != type) | |
1723 | return o; | |
79072805 | 1724 | |
11343788 | 1725 | if (cLISTOPo->op_children < 7) { |
79072805 | 1726 | /* XXX do we really need to do this if we're done appending?? */ |
11343788 | 1727 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 | 1728 | last = kid; |
11343788 | 1729 | cLISTOPo->op_last = last; /* in case check substituted last arg */ |
79072805 LW |
1730 | } |
1731 | ||
11343788 | 1732 | return fold_constants(o); |
79072805 LW |
1733 | } |
1734 | ||
1735 | /* List constructors */ | |
1736 | ||
1737 | OP * | |
1738 | append_elem(type, first, last) | |
1739 | I32 type; | |
1740 | OP* first; | |
1741 | OP* last; | |
1742 | { | |
1743 | if (!first) | |
1744 | return last; | |
8990e307 LW |
1745 | |
1746 | if (!last) | |
79072805 | 1747 | return first; |
8990e307 | 1748 | |
a0d0e21e LW |
1749 | if (first->op_type != type || type==OP_LIST && first->op_flags & OPf_PARENS) |
1750 | return newLISTOP(type, 0, first, last); | |
79072805 | 1751 | |
a0d0e21e LW |
1752 | if (first->op_flags & OPf_KIDS) |
1753 | ((LISTOP*)first)->op_last->op_sibling = last; | |
1754 | else { | |
1755 | first->op_flags |= OPf_KIDS; | |
1756 | ((LISTOP*)first)->op_first = last; | |
1757 | } | |
1758 | ((LISTOP*)first)->op_last = last; | |
1759 | ((LISTOP*)first)->op_children++; | |
1760 | return first; | |
79072805 LW |
1761 | } |
1762 | ||
1763 | OP * | |
1764 | append_list(type, first, last) | |
1765 | I32 type; | |
1766 | LISTOP* first; | |
1767 | LISTOP* last; | |
1768 | { | |
1769 | if (!first) | |
1770 | return (OP*)last; | |
8990e307 LW |
1771 | |
1772 | if (!last) | |
79072805 | 1773 | return (OP*)first; |
8990e307 LW |
1774 | |
1775 | if (first->op_type != type) | |
79072805 | 1776 | return prepend_elem(type, (OP*)first, (OP*)last); |
8990e307 LW |
1777 | |
1778 | if (last->op_type != type) | |
79072805 LW |
1779 | return append_elem(type, (OP*)first, (OP*)last); |
1780 | ||
1781 | first->op_last->op_sibling = last->op_first; | |
1782 | first->op_last = last->op_last; | |
1783 | first->op_children += last->op_children; | |
1784 | if (first->op_children) | |
1785 | last->op_flags |= OPf_KIDS; | |
1786 | ||
1787 | Safefree(last); | |
1788 | return (OP*)first; | |
1789 | } | |
1790 | ||
1791 | OP * | |
1792 | prepend_elem(type, first, last) | |
1793 | I32 type; | |
1794 | OP* first; | |
1795 | OP* last; | |
1796 | { | |
1797 | if (!first) | |
1798 | return last; | |
8990e307 LW |
1799 | |
1800 | if (!last) | |
79072805 | 1801 | return first; |
8990e307 LW |
1802 | |
1803 | if (last->op_type == type) { | |
1804 | if (type == OP_LIST) { /* already a PUSHMARK there */ | |
1805 | first->op_sibling = ((LISTOP*)last)->op_first->op_sibling; | |
1806 | ((LISTOP*)last)->op_first->op_sibling = first; | |
1807 | } | |
1808 | else { | |
1809 | if (!(last->op_flags & OPf_KIDS)) { | |
1810 | ((LISTOP*)last)->op_last = first; | |
1811 | last->op_flags |= OPf_KIDS; | |
1812 | } | |
1813 | first->op_sibling = ((LISTOP*)last)->op_first; | |
1814 | ((LISTOP*)last)->op_first = first; | |
79072805 | 1815 | } |
79072805 LW |
1816 | ((LISTOP*)last)->op_children++; |
1817 | return last; | |
1818 | } | |
1819 | ||
1820 | return newLISTOP(type, 0, first, last); | |
1821 | } | |
1822 | ||
1823 | /* Constructors */ | |
1824 | ||
1825 | OP * | |
1826 | newNULLLIST() | |
1827 | { | |
8990e307 LW |
1828 | return newOP(OP_STUB, 0); |
1829 | } | |
1830 | ||
1831 | OP * | |
11343788 MB |
1832 | force_list(o) |
1833 | OP *o; | |
8990e307 | 1834 | { |
11343788 MB |
1835 | if (!o || o->op_type != OP_LIST) |
1836 | o = newLISTOP(OP_LIST, 0, o, Nullop); | |
1837 | null(o); | |
1838 | return o; | |
79072805 LW |
1839 | } |
1840 | ||
1841 | OP * | |
1842 | newLISTOP(type, flags, first, last) | |
1843 | I32 type; | |
1844 | I32 flags; | |
1845 | OP* first; | |
1846 | OP* last; | |
1847 | { | |
1848 | LISTOP *listop; | |
1849 | ||
1850 | Newz(1101, listop, 1, LISTOP); | |
1851 | ||
1852 | listop->op_type = type; | |
1853 | listop->op_ppaddr = ppaddr[type]; | |
1854 | listop->op_children = (first != 0) + (last != 0); | |
1855 | listop->op_flags = flags; | |
79072805 LW |
1856 | |
1857 | if (!last && first) | |
1858 | last = first; | |
1859 | else if (!first && last) | |
1860 | first = last; | |
8990e307 LW |
1861 | else if (first) |
1862 | first->op_sibling = last; | |
79072805 LW |
1863 | listop->op_first = first; |
1864 | listop->op_last = last; | |
8990e307 LW |
1865 | if (type == OP_LIST) { |
1866 | OP* pushop; | |
1867 | pushop = newOP(OP_PUSHMARK, 0); | |
1868 | pushop->op_sibling = first; | |
1869 | listop->op_first = pushop; | |
1870 | listop->op_flags |= OPf_KIDS; | |
1871 | if (!last) | |
1872 | listop->op_last = pushop; | |
1873 | } | |
1874 | else if (listop->op_children) | |
1875 | listop->op_flags |= OPf_KIDS; | |
79072805 LW |
1876 | |
1877 | return (OP*)listop; | |
1878 | } | |
1879 | ||
1880 | OP * | |
1881 | newOP(type, flags) | |
1882 | I32 type; | |
1883 | I32 flags; | |
1884 | { | |
11343788 MB |
1885 | OP *o; |
1886 | Newz(1101, o, 1, OP); | |
1887 | o->op_type = type; | |
1888 | o->op_ppaddr = ppaddr[type]; | |
1889 | o->op_flags = flags; | |
79072805 | 1890 | |
11343788 MB |
1891 | o->op_next = o; |
1892 | o->op_private = 0 + (flags >> 8); | |
79072805 | 1893 | if (opargs[type] & OA_RETSCALAR) |
11343788 | 1894 | scalar(o); |
79072805 | 1895 | if (opargs[type] & OA_TARGET) |
11343788 MB |
1896 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
1897 | return CHECKOP(type, o); | |
79072805 LW |
1898 | } |
1899 | ||
1900 | OP * | |
1901 | newUNOP(type, flags, first) | |
1902 | I32 type; | |
1903 | I32 flags; | |
1904 | OP* first; | |
1905 | { | |
1906 | UNOP *unop; | |
1907 | ||
93a17b20 LW |
1908 | if (!first) |
1909 | first = newOP(OP_STUB, 0); | |
8990e307 LW |
1910 | if (opargs[type] & OA_MARK) |
1911 | first = force_list(first); | |
93a17b20 | 1912 | |
79072805 LW |
1913 | Newz(1101, unop, 1, UNOP); |
1914 | unop->op_type = type; | |
1915 | unop->op_ppaddr = ppaddr[type]; | |
1916 | unop->op_first = first; | |
1917 | unop->op_flags = flags | OPf_KIDS; | |
c07a80fd | 1918 | unop->op_private = 1 | (flags >> 8); |
79072805 | 1919 | |
e50aee73 | 1920 | unop = (UNOP*) CHECKOP(type, unop); |
79072805 LW |
1921 | if (unop->op_next) |
1922 | return (OP*)unop; | |
1923 | ||
a0d0e21e | 1924 | return fold_constants((OP *) unop); |
79072805 LW |
1925 | } |
1926 | ||
1927 | OP * | |
1928 | newBINOP(type, flags, first, last) | |
1929 | I32 type; | |
1930 | I32 flags; | |
1931 | OP* first; | |
1932 | OP* last; | |
1933 | { | |
1934 | BINOP *binop; | |
1935 | Newz(1101, binop, 1, BINOP); | |
1936 | ||
1937 | if (!first) | |
1938 | first = newOP(OP_NULL, 0); | |
1939 | ||
1940 | binop->op_type = type; | |
1941 | binop->op_ppaddr = ppaddr[type]; | |
1942 | binop->op_first = first; | |
1943 | binop->op_flags = flags | OPf_KIDS; | |
1944 | if (!last) { | |
1945 | last = first; | |
c07a80fd | 1946 | binop->op_private = 1 | (flags >> 8); |
79072805 LW |
1947 | } |
1948 | else { | |
c07a80fd | 1949 | binop->op_private = 2 | (flags >> 8); |
79072805 LW |
1950 | first->op_sibling = last; |
1951 | } | |
1952 | ||
e50aee73 | 1953 | binop = (BINOP*)CHECKOP(type, binop); |
79072805 LW |
1954 | if (binop->op_next) |
1955 | return (OP*)binop; | |
1956 | ||
1957 | binop->op_last = last = binop->op_first->op_sibling; | |
1958 | ||
a0d0e21e | 1959 | return fold_constants((OP *)binop); |
79072805 LW |
1960 | } |
1961 | ||
1962 | OP * | |
11343788 MB |
1963 | pmtrans(o, expr, repl) |
1964 | OP *o; | |
79072805 LW |
1965 | OP *expr; |
1966 | OP *repl; | |
1967 | { | |
79072805 LW |
1968 | SV *tstr = ((SVOP*)expr)->op_sv; |
1969 | SV *rstr = ((SVOP*)repl)->op_sv; | |
463ee0b2 LW |
1970 | STRLEN tlen; |
1971 | STRLEN rlen; | |
ec49126f | 1972 | register U8 *t = (U8*)SvPV(tstr, tlen); |
1973 | register U8 *r = (U8*)SvPV(rstr, rlen); | |
79072805 LW |
1974 | register I32 i; |
1975 | register I32 j; | |
79072805 LW |
1976 | I32 delete; |
1977 | I32 complement; | |
1978 | register short *tbl; | |
1979 | ||
11343788 MB |
1980 | tbl = (short*)cPVOPo->op_pv; |
1981 | complement = o->op_private & OPpTRANS_COMPLEMENT; | |
1982 | delete = o->op_private & OPpTRANS_DELETE; | |
1983 | /* squash = o->op_private & OPpTRANS_SQUASH; */ | |
79072805 LW |
1984 | |
1985 | if (complement) { | |
1986 | Zero(tbl, 256, short); | |
1987 | for (i = 0; i < tlen; i++) | |
ec49126f | 1988 | tbl[t[i]] = -1; |
79072805 LW |
1989 | for (i = 0, j = 0; i < 256; i++) { |
1990 | if (!tbl[i]) { | |
1991 | if (j >= rlen) { | |
1992 | if (delete) | |
1993 | tbl[i] = -2; | |
1994 | else if (rlen) | |
ec49126f | 1995 | tbl[i] = r[j-1]; |
79072805 LW |
1996 | else |
1997 | tbl[i] = i; | |
1998 | } | |
1999 | else | |
ec49126f | 2000 | tbl[i] = r[j++]; |
79072805 LW |
2001 | } |
2002 | } | |
2003 | } | |
2004 | else { | |
2005 | if (!rlen && !delete) { | |
2006 | r = t; rlen = tlen; | |
2007 | } | |
2008 | for (i = 0; i < 256; i++) | |
2009 | tbl[i] = -1; | |
2010 | for (i = 0, j = 0; i < tlen; i++,j++) { | |
2011 | if (j >= rlen) { | |
2012 | if (delete) { | |
ec49126f | 2013 | if (tbl[t[i]] == -1) |
2014 | tbl[t[i]] = -2; | |
79072805 LW |
2015 | continue; |
2016 | } | |
2017 | --j; | |
2018 | } | |
ec49126f | 2019 | if (tbl[t[i]] == -1) |
2020 | tbl[t[i]] = r[j]; | |
79072805 LW |
2021 | } |
2022 | } | |
2023 | op_free(expr); | |
2024 | op_free(repl); | |
2025 | ||
11343788 | 2026 | return o; |
79072805 LW |
2027 | } |
2028 | ||
2029 | OP * | |
2030 | newPMOP(type, flags) | |
2031 | I32 type; | |
2032 | I32 flags; | |
2033 | { | |
11343788 | 2034 | dTHR; |
79072805 LW |
2035 | PMOP *pmop; |
2036 | ||
2037 | Newz(1101, pmop, 1, PMOP); | |
2038 | pmop->op_type = type; | |
2039 | pmop->op_ppaddr = ppaddr[type]; | |
2040 | pmop->op_flags = flags; | |
c07a80fd | 2041 | pmop->op_private = 0 | (flags >> 8); |
79072805 | 2042 | |
36477c24 | 2043 | if (hints & HINT_LOCALE) |
2044 | pmop->op_pmpermflags = (pmop->op_pmflags |= PMf_LOCALE); | |
2045 | ||
79072805 | 2046 | /* link into pm list */ |
a0d0e21e | 2047 | if (type != OP_TRANS && curstash) { |
79072805 LW |
2048 | pmop->op_pmnext = HvPMROOT(curstash); |
2049 | HvPMROOT(curstash) = pmop; | |
2050 | } | |
2051 | ||
2052 | return (OP*)pmop; | |
2053 | } | |
2054 | ||
2055 | OP * | |
11343788 MB |
2056 | pmruntime(o, expr, repl) |
2057 | OP *o; | |
79072805 LW |
2058 | OP *expr; |
2059 | OP *repl; | |
2060 | { | |
2061 | PMOP *pm; | |
2062 | LOGOP *rcop; | |
2063 | ||
11343788 MB |
2064 | if (o->op_type == OP_TRANS) |
2065 | return pmtrans(o, expr, repl); | |
79072805 | 2066 | |
11343788 | 2067 | pm = (PMOP*)o; |
79072805 LW |
2068 | |
2069 | if (expr->op_type == OP_CONST) { | |
463ee0b2 | 2070 | STRLEN plen; |
79072805 | 2071 | SV *pat = ((SVOP*)expr)->op_sv; |
463ee0b2 | 2072 | char *p = SvPV(pat, plen); |
11343788 | 2073 | if ((o->op_flags & OPf_SPECIAL) && strEQ(p, " ")) { |
93a17b20 | 2074 | sv_setpvn(pat, "\\s+", 3); |
463ee0b2 | 2075 | p = SvPV(pat, plen); |
79072805 LW |
2076 | pm->op_pmflags |= PMf_SKIPWHITE; |
2077 | } | |
e50aee73 | 2078 | pm->op_pmregexp = pregcomp(p, p + plen, pm); |
85e6fe83 LW |
2079 | if (strEQ("\\s+", pm->op_pmregexp->precomp)) |
2080 | pm->op_pmflags |= PMf_WHITE; | |
79072805 LW |
2081 | hoistmust(pm); |
2082 | op_free(expr); | |
2083 | } | |
2084 | else { | |
463ee0b2 LW |
2085 | if (pm->op_pmflags & PMf_KEEP) |
2086 | expr = newUNOP(OP_REGCMAYBE,0,expr); | |
2087 | ||
79072805 LW |
2088 | Newz(1101, rcop, 1, LOGOP); |
2089 | rcop->op_type = OP_REGCOMP; | |
2090 | rcop->op_ppaddr = ppaddr[OP_REGCOMP]; | |
2091 | rcop->op_first = scalar(expr); | |
2092 | rcop->op_flags |= OPf_KIDS; | |
2093 | rcop->op_private = 1; | |
11343788 | 2094 | rcop->op_other = o; |
79072805 LW |
2095 | |
2096 | /* establish postfix order */ | |
463ee0b2 LW |
2097 | if (pm->op_pmflags & PMf_KEEP) { |
2098 | LINKLIST(expr); | |
2099 | rcop->op_next = expr; | |
2100 | ((UNOP*)expr)->op_first->op_next = (OP*)rcop; | |
2101 | } | |
2102 | else { | |
2103 | rcop->op_next = LINKLIST(expr); | |
2104 | expr->op_next = (OP*)rcop; | |
2105 | } | |
79072805 | 2106 | |
11343788 | 2107 | prepend_elem(o->op_type, scalar((OP*)rcop), o); |
79072805 LW |
2108 | } |
2109 | ||
2110 | if (repl) { | |
748a9306 LW |
2111 | OP *curop; |
2112 | if (pm->op_pmflags & PMf_EVAL) | |
2113 | curop = 0; | |
2114 | else if (repl->op_type == OP_CONST) | |
2115 | curop = repl; | |
79072805 | 2116 | else { |
79072805 LW |
2117 | OP *lastop = 0; |
2118 | for (curop = LINKLIST(repl); curop!=repl; curop = LINKLIST(curop)) { | |
2119 | if (opargs[curop->op_type] & OA_DANGEROUS) { | |
2120 | if (curop->op_type == OP_GV) { | |
2121 | GV *gv = ((GVOP*)curop)->op_gv; | |
93a17b20 | 2122 | if (strchr("&`'123456789+", *GvENAME(gv))) |
79072805 LW |
2123 | break; |
2124 | } | |
2125 | else if (curop->op_type == OP_RV2CV) | |
2126 | break; | |
2127 | else if (curop->op_type == OP_RV2SV || | |
2128 | curop->op_type == OP_RV2AV || | |
2129 | curop->op_type == OP_RV2HV || | |
2130 | curop->op_type == OP_RV2GV) { | |
2131 | if (lastop && lastop->op_type != OP_GV) /*funny deref?*/ | |
2132 | break; | |
2133 | } | |
748a9306 LW |
2134 | else if (curop->op_type == OP_PADSV || |
2135 | curop->op_type == OP_PADAV || | |
2136 | curop->op_type == OP_PADHV || | |
2137 | curop->op_type == OP_PADANY) { | |
2138 | /* is okay */ | |
2139 | } | |
79072805 LW |
2140 | else |
2141 | break; | |
2142 | } | |
2143 | lastop = curop; | |
2144 | } | |
748a9306 LW |
2145 | } |
2146 | if (curop == repl) { | |
2147 | pm->op_pmflags |= PMf_CONST; /* const for long enough */ | |
4633a7c4 | 2148 | pm->op_pmpermflags |= PMf_CONST; /* const for long enough */ |
11343788 | 2149 | prepend_elem(o->op_type, scalar(repl), o); |
748a9306 LW |
2150 | } |
2151 | else { | |
2152 | Newz(1101, rcop, 1, LOGOP); | |
2153 | rcop->op_type = OP_SUBSTCONT; | |
2154 | rcop->op_ppaddr = ppaddr[OP_SUBSTCONT]; | |
2155 | rcop->op_first = scalar(repl); | |
2156 | rcop->op_flags |= OPf_KIDS; | |
2157 | rcop->op_private = 1; | |
11343788 | 2158 | rcop->op_other = o; |
748a9306 LW |
2159 | |
2160 | /* establish postfix order */ | |
2161 | rcop->op_next = LINKLIST(repl); | |
2162 | repl->op_next = (OP*)rcop; | |
2163 | ||
2164 | pm->op_pmreplroot = scalar((OP*)rcop); | |
2165 | pm->op_pmreplstart = LINKLIST(rcop); | |
2166 | rcop->op_next = 0; | |
79072805 LW |
2167 | } |
2168 | } | |
2169 | ||
2170 | return (OP*)pm; | |
2171 | } | |
2172 | ||
2173 | OP * | |
2174 | newSVOP(type, flags, sv) | |
2175 | I32 type; | |
2176 | I32 flags; | |
2177 | SV *sv; | |
2178 | { | |
2179 | SVOP *svop; | |
2180 | Newz(1101, svop, 1, SVOP); | |
2181 | svop->op_type = type; | |
2182 | svop->op_ppaddr = ppaddr[type]; | |
2183 | svop->op_sv = sv; | |
2184 | svop->op_next = (OP*)svop; | |
2185 | svop->op_flags = flags; | |
2186 | if (opargs[type] & OA_RETSCALAR) | |
463ee0b2 | 2187 | scalar((OP*)svop); |
79072805 | 2188 | if (opargs[type] & OA_TARGET) |
ed6116ce | 2189 | svop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2190 | return CHECKOP(type, svop); |
79072805 LW |
2191 | } |
2192 | ||
2193 | OP * | |
2194 | newGVOP(type, flags, gv) | |
2195 | I32 type; | |
2196 | I32 flags; | |
2197 | GV *gv; | |
2198 | { | |
11343788 | 2199 | dTHR; |
79072805 LW |
2200 | GVOP *gvop; |
2201 | Newz(1101, gvop, 1, GVOP); | |
2202 | gvop->op_type = type; | |
2203 | gvop->op_ppaddr = ppaddr[type]; | |
8990e307 | 2204 | gvop->op_gv = (GV*)SvREFCNT_inc(gv); |
79072805 LW |
2205 | gvop->op_next = (OP*)gvop; |
2206 | gvop->op_flags = flags; | |
2207 | if (opargs[type] & OA_RETSCALAR) | |
463ee0b2 | 2208 | scalar((OP*)gvop); |
79072805 | 2209 | if (opargs[type] & OA_TARGET) |
ed6116ce | 2210 | gvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2211 | return CHECKOP(type, gvop); |
79072805 LW |
2212 | } |
2213 | ||
2214 | OP * | |
2215 | newPVOP(type, flags, pv) | |
2216 | I32 type; | |
2217 | I32 flags; | |
2218 | char *pv; | |
2219 | { | |
2220 | PVOP *pvop; | |
2221 | Newz(1101, pvop, 1, PVOP); | |
2222 | pvop->op_type = type; | |
2223 | pvop->op_ppaddr = ppaddr[type]; | |
2224 | pvop->op_pv = pv; | |
2225 | pvop->op_next = (OP*)pvop; | |
2226 | pvop->op_flags = flags; | |
2227 | if (opargs[type] & OA_RETSCALAR) | |
463ee0b2 | 2228 | scalar((OP*)pvop); |
79072805 | 2229 | if (opargs[type] & OA_TARGET) |
ed6116ce | 2230 | pvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2231 | return CHECKOP(type, pvop); |
79072805 LW |
2232 | } |
2233 | ||
79072805 | 2234 | void |
11343788 MB |
2235 | package(o) |
2236 | OP *o; | |
79072805 | 2237 | { |
11343788 | 2238 | dTHR; |
93a17b20 | 2239 | SV *sv; |
79072805 LW |
2240 | |
2241 | save_hptr(&curstash); | |
2242 | save_item(curstname); | |
11343788 | 2243 | if (o) { |
463ee0b2 LW |
2244 | STRLEN len; |
2245 | char *name; | |
11343788 | 2246 | sv = cSVOPo->op_sv; |
463ee0b2 | 2247 | name = SvPV(sv, len); |
b1cb66bf | 2248 | curstash = gv_stashpvn(name,len,TRUE); |
463ee0b2 | 2249 | sv_setpvn(curstname, name, len); |
11343788 | 2250 | op_free(o); |
93a17b20 LW |
2251 | } |
2252 | else { | |
2253 | sv_setpv(curstname,"<none>"); | |
2254 | curstash = Nullhv; | |
2255 | } | |
79072805 | 2256 | copline = NOLINE; |
8990e307 | 2257 | expect = XSTATE; |
79072805 LW |
2258 | } |
2259 | ||
85e6fe83 | 2260 | void |
b1cb66bf | 2261 | utilize(aver, floor, version, id, arg) |
85e6fe83 | 2262 | int aver; |
c07a80fd | 2263 | I32 floor; |
b1cb66bf | 2264 | OP *version; |
85e6fe83 LW |
2265 | OP *id; |
2266 | OP *arg; | |
2267 | { | |
a0d0e21e LW |
2268 | OP *pack; |
2269 | OP *meth; | |
2270 | OP *rqop; | |
2271 | OP *imop; | |
b1cb66bf | 2272 | OP *veop; |
85e6fe83 | 2273 | |
a0d0e21e LW |
2274 | if (id->op_type != OP_CONST) |
2275 | croak("Module name must be constant"); | |
85e6fe83 | 2276 | |
b1cb66bf | 2277 | veop = Nullop; |
2278 | ||
2279 | if(version != Nullop) { | |
2280 | SV *vesv = ((SVOP*)version)->op_sv; | |
2281 | ||
2282 | if (arg == Nullop && !SvNIOK(vesv)) { | |
2283 | arg = version; | |
2284 | } | |
2285 | else { | |
2286 | OP *pack; | |
2287 | OP *meth; | |
2288 | ||
2289 | if (version->op_type != OP_CONST || !SvNIOK(vesv)) | |
2290 | croak("Version number must be constant number"); | |
2291 | ||
2292 | /* Make copy of id so we don't free it twice */ | |
2293 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); | |
2294 | ||
2295 | /* Fake up a method call to VERSION */ | |
2296 | meth = newSVOP(OP_CONST, 0, newSVpv("VERSION", 7)); | |
2297 | veop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, | |
2298 | append_elem(OP_LIST, | |
2299 | prepend_elem(OP_LIST, pack, list(version)), | |
2300 | newUNOP(OP_METHOD, 0, meth))); | |
2301 | } | |
2302 | } | |
2303 | ||
a0d0e21e | 2304 | /* Fake up an import/unimport */ |
4633a7c4 LW |
2305 | if (arg && arg->op_type == OP_STUB) |
2306 | imop = arg; /* no import on explicit () */ | |
b1cb66bf | 2307 | else if(SvNIOK(((SVOP*)id)->op_sv)) { |
2308 | imop = Nullop; /* use 5.0; */ | |
2309 | } | |
4633a7c4 LW |
2310 | else { |
2311 | /* Make copy of id so we don't free it twice */ | |
2312 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); | |
4633a7c4 LW |
2313 | meth = newSVOP(OP_CONST, 0, |
2314 | aver | |
2315 | ? newSVpv("import", 6) | |
2316 | : newSVpv("unimport", 8) | |
2317 | ); | |
2318 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, | |
a0d0e21e LW |
2319 | append_elem(OP_LIST, |
2320 | prepend_elem(OP_LIST, pack, list(arg)), | |
2321 | newUNOP(OP_METHOD, 0, meth))); | |
4633a7c4 LW |
2322 | } |
2323 | ||
2324 | /* Fake up a require */ | |
2325 | rqop = newUNOP(OP_REQUIRE, 0, id); | |
a0d0e21e LW |
2326 | |
2327 | /* Fake up the BEGIN {}, which does its thing immediately. */ | |
c07a80fd | 2328 | newSUB(floor, |
a0d0e21e | 2329 | newSVOP(OP_CONST, 0, newSVpv("BEGIN", 5)), |
4633a7c4 | 2330 | Nullop, |
a0d0e21e | 2331 | append_elem(OP_LINESEQ, |
b1cb66bf | 2332 | append_elem(OP_LINESEQ, |
2333 | newSTATEOP(0, Nullch, rqop), | |
2334 | newSTATEOP(0, Nullch, veop)), | |
a0d0e21e | 2335 | newSTATEOP(0, Nullch, imop) )); |
85e6fe83 | 2336 | |
85e6fe83 LW |
2337 | copline = NOLINE; |
2338 | expect = XSTATE; | |
2339 | } | |
2340 | ||
79072805 LW |
2341 | OP * |
2342 | newSLICEOP(flags, subscript, listval) | |
2343 | I32 flags; | |
2344 | OP *subscript; | |
2345 | OP *listval; | |
2346 | { | |
2347 | return newBINOP(OP_LSLICE, flags, | |
8990e307 LW |
2348 | list(force_list(subscript)), |
2349 | list(force_list(listval)) ); | |
79072805 LW |
2350 | } |
2351 | ||
2352 | static I32 | |
11343788 MB |
2353 | list_assignment(o) |
2354 | register OP *o; | |
79072805 | 2355 | { |
11343788 | 2356 | if (!o) |
79072805 LW |
2357 | return TRUE; |
2358 | ||
11343788 MB |
2359 | if (o->op_type == OP_NULL && o->op_flags & OPf_KIDS) |
2360 | o = cUNOPo->op_first; | |
79072805 | 2361 | |
11343788 MB |
2362 | if (o->op_type == OP_COND_EXPR) { |
2363 | I32 t = list_assignment(cCONDOPo->op_first->op_sibling); | |
2364 | I32 f = list_assignment(cCONDOPo->op_first->op_sibling->op_sibling); | |
79072805 LW |
2365 | |
2366 | if (t && f) | |
2367 | return TRUE; | |
2368 | if (t || f) | |
2369 | yyerror("Assignment to both a list and a scalar"); | |
2370 | return FALSE; | |
2371 | } | |
2372 | ||
11343788 MB |
2373 | if (o->op_type == OP_LIST || o->op_flags & OPf_PARENS || |
2374 | o->op_type == OP_RV2AV || o->op_type == OP_RV2HV || | |
2375 | o->op_type == OP_ASLICE || o->op_type == OP_HSLICE) | |
79072805 LW |
2376 | return TRUE; |
2377 | ||
11343788 | 2378 | if (o->op_type == OP_PADAV || o->op_type == OP_PADHV) |
93a17b20 LW |
2379 | return TRUE; |
2380 | ||
11343788 | 2381 | if (o->op_type == OP_RV2SV) |
79072805 LW |
2382 | return FALSE; |
2383 | ||
2384 | return FALSE; | |
2385 | } | |
2386 | ||
2387 | OP * | |
a0d0e21e | 2388 | newASSIGNOP(flags, left, optype, right) |
79072805 LW |
2389 | I32 flags; |
2390 | OP *left; | |
a0d0e21e | 2391 | I32 optype; |
79072805 LW |
2392 | OP *right; |
2393 | { | |
11343788 | 2394 | OP *o; |
79072805 | 2395 | |
a0d0e21e LW |
2396 | if (optype) { |
2397 | if (optype == OP_ANDASSIGN || optype == OP_ORASSIGN) { | |
2398 | return newLOGOP(optype, 0, | |
2399 | mod(scalar(left), optype), | |
2400 | newUNOP(OP_SASSIGN, 0, scalar(right))); | |
2401 | } | |
2402 | else { | |
2403 | return newBINOP(optype, OPf_STACKED, | |
2404 | mod(scalar(left), optype), scalar(right)); | |
2405 | } | |
2406 | } | |
2407 | ||
79072805 | 2408 | if (list_assignment(left)) { |
463ee0b2 | 2409 | modcount = 0; |
748a9306 | 2410 | eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ |
463ee0b2 | 2411 | left = mod(left, OP_AASSIGN); |
748a9306 LW |
2412 | if (eval_start) |
2413 | eval_start = 0; | |
2414 | else { | |
a0d0e21e LW |
2415 | op_free(left); |
2416 | op_free(right); | |
2417 | return Nullop; | |
2418 | } | |
11343788 | 2419 | o = newBINOP(OP_AASSIGN, flags, |
8990e307 LW |
2420 | list(force_list(right)), |
2421 | list(force_list(left)) ); | |
11343788 | 2422 | o->op_private = 0 | (flags >> 8); |
a0d0e21e | 2423 | if (!(left->op_private & OPpLVAL_INTRO)) { |
748a9306 | 2424 | static int generation = 100; |
79072805 | 2425 | OP *curop; |
11343788 | 2426 | OP *lastop = o; |
79072805 | 2427 | generation++; |
11343788 | 2428 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
79072805 LW |
2429 | if (opargs[curop->op_type] & OA_DANGEROUS) { |
2430 | if (curop->op_type == OP_GV) { | |
2431 | GV *gv = ((GVOP*)curop)->op_gv; | |
2432 | if (gv == defgv || SvCUR(gv) == generation) | |
2433 | break; | |
2434 | SvCUR(gv) = generation; | |
2435 | } | |
748a9306 LW |
2436 | else if (curop->op_type == OP_PADSV || |
2437 | curop->op_type == OP_PADAV || | |
2438 | curop->op_type == OP_PADHV || | |
2439 | curop->op_type == OP_PADANY) { | |
2440 | SV **svp = AvARRAY(comppad_name); | |
8e07c86e | 2441 | SV *sv = svp[curop->op_targ]; |
748a9306 LW |
2442 | if (SvCUR(sv) == generation) |
2443 | break; | |
2444 | SvCUR(sv) = generation; /* (SvCUR not used any more) */ | |
2445 | } | |
79072805 LW |
2446 | else if (curop->op_type == OP_RV2CV) |
2447 | break; | |
2448 | else if (curop->op_type == OP_RV2SV || | |
2449 | curop->op_type == OP_RV2AV || | |
2450 | curop->op_type == OP_RV2HV || | |
2451 | curop->op_type == OP_RV2GV) { | |
2452 | if (lastop->op_type != OP_GV) /* funny deref? */ | |
2453 | break; | |
2454 | } | |
2455 | else | |
2456 | break; | |
2457 | } | |
2458 | lastop = curop; | |
2459 | } | |
11343788 MB |
2460 | if (curop != o) |
2461 | o->op_private = OPpASSIGN_COMMON; | |
79072805 | 2462 | } |
c07a80fd | 2463 | if (right && right->op_type == OP_SPLIT) { |
2464 | OP* tmpop; | |
2465 | if ((tmpop = ((LISTOP*)right)->op_first) && | |
2466 | tmpop->op_type == OP_PUSHRE) | |
2467 | { | |
2468 | PMOP *pm = (PMOP*)tmpop; | |
2469 | if (left->op_type == OP_RV2AV && | |
2470 | !(left->op_private & OPpLVAL_INTRO) && | |
11343788 | 2471 | !(o->op_private & OPpASSIGN_COMMON) ) |
c07a80fd | 2472 | { |
2473 | tmpop = ((UNOP*)left)->op_first; | |
2474 | if (tmpop->op_type == OP_GV && !pm->op_pmreplroot) { | |
2475 | pm->op_pmreplroot = (OP*)((GVOP*)tmpop)->op_gv; | |
2476 | pm->op_pmflags |= PMf_ONCE; | |
11343788 | 2477 | tmpop = cUNOPo->op_first; /* to list (nulled) */ |
c07a80fd | 2478 | tmpop = ((UNOP*)tmpop)->op_first; /* to pushmark */ |
2479 | tmpop->op_sibling = Nullop; /* don't free split */ | |
2480 | right->op_next = tmpop->op_next; /* fix starting loc */ | |
11343788 | 2481 | op_free(o); /* blow off assign */ |
54310121 | 2482 | right->op_flags &= ~OPf_WANT; |
a5f75d66 | 2483 | /* "I don't know and I don't care." */ |
c07a80fd | 2484 | return right; |
2485 | } | |
2486 | } | |
2487 | else { | |
2488 | if (modcount < 10000 && | |
2489 | ((LISTOP*)right)->op_last->op_type == OP_CONST) | |
2490 | { | |
2491 | SV *sv = ((SVOP*)((LISTOP*)right)->op_last)->op_sv; | |
2492 | if (SvIVX(sv) == 0) | |
2493 | sv_setiv(sv, modcount+1); | |
2494 | } | |
2495 | } | |
2496 | } | |
2497 | } | |
11343788 | 2498 | return o; |
79072805 LW |
2499 | } |
2500 | if (!right) | |
2501 | right = newOP(OP_UNDEF, 0); | |
2502 | if (right->op_type == OP_READLINE) { | |
2503 | right->op_flags |= OPf_STACKED; | |
463ee0b2 | 2504 | return newBINOP(OP_NULL, flags, mod(scalar(left), OP_SASSIGN), scalar(right)); |
79072805 | 2505 | } |
a0d0e21e | 2506 | else { |
748a9306 | 2507 | eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ |
11343788 | 2508 | o = newBINOP(OP_SASSIGN, flags, |
463ee0b2 | 2509 | scalar(right), mod(scalar(left), OP_SASSIGN) ); |
748a9306 LW |
2510 | if (eval_start) |
2511 | eval_start = 0; | |
2512 | else { | |
11343788 | 2513 | op_free(o); |
a0d0e21e LW |
2514 | return Nullop; |
2515 | } | |
2516 | } | |
11343788 | 2517 | return o; |
79072805 LW |
2518 | } |
2519 | ||
2520 | OP * | |
11343788 | 2521 | newSTATEOP(flags, label, o) |
79072805 LW |
2522 | I32 flags; |
2523 | char *label; | |
11343788 | 2524 | OP *o; |
79072805 | 2525 | { |
11343788 | 2526 | dTHR; |
bbce6d69 | 2527 | U32 seq = intro_my(); |
79072805 LW |
2528 | register COP *cop; |
2529 | ||
2530 | Newz(1101, cop, 1, COP); | |
8990e307 LW |
2531 | if (perldb && curcop->cop_line && curstash != debstash) { |
2532 | cop->op_type = OP_DBSTATE; | |
2533 | cop->op_ppaddr = ppaddr[ OP_DBSTATE ]; | |
2534 | } | |
2535 | else { | |
2536 | cop->op_type = OP_NEXTSTATE; | |
2537 | cop->op_ppaddr = ppaddr[ OP_NEXTSTATE ]; | |
2538 | } | |
79072805 | 2539 | cop->op_flags = flags; |
c07a80fd | 2540 | cop->op_private = 0 | (flags >> 8); |
ff0cee69 | 2541 | #ifdef NATIVE_HINTS |
2542 | cop->op_private |= NATIVE_HINTS; | |
2543 | #endif | |
79072805 LW |
2544 | cop->op_next = (OP*)cop; |
2545 | ||
463ee0b2 LW |
2546 | if (label) { |
2547 | cop->cop_label = label; | |
85e6fe83 | 2548 | hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 2549 | } |
bbce6d69 | 2550 | cop->cop_seq = seq; |
a0d0e21e | 2551 | cop->cop_arybase = curcop->cop_arybase; |
79072805 LW |
2552 | |
2553 | if (copline == NOLINE) | |
2554 | cop->cop_line = curcop->cop_line; | |
2555 | else { | |
2556 | cop->cop_line = copline; | |
2557 | copline = NOLINE; | |
2558 | } | |
44a8e56a | 2559 | cop->cop_filegv = (GV*)SvREFCNT_inc(curcop->cop_filegv); |
79072805 LW |
2560 | cop->cop_stash = curstash; |
2561 | ||
8990e307 | 2562 | if (perldb && curstash != debstash) { |
93a17b20 LW |
2563 | SV **svp = av_fetch(GvAV(curcop->cop_filegv),(I32)cop->cop_line, FALSE); |
2564 | if (svp && *svp != &sv_undef && !SvIOK(*svp)) { | |
a0d0e21e | 2565 | (void)SvIOK_on(*svp); |
a5f75d66 | 2566 | SvIVX(*svp) = 1; |
93a17b20 LW |
2567 | SvSTASH(*svp) = (HV*)cop; |
2568 | } | |
2569 | } | |
2570 | ||
11343788 | 2571 | return prepend_elem(OP_LINESEQ, (OP*)cop, o); |
79072805 LW |
2572 | } |
2573 | ||
bbce6d69 | 2574 | /* "Introduce" my variables to visible status. */ |
2575 | U32 | |
2576 | intro_my() | |
2577 | { | |
2578 | SV **svp; | |
2579 | SV *sv; | |
2580 | I32 i; | |
2581 | ||
2582 | if (! min_intro_pending) | |
2583 | return cop_seqmax; | |
2584 | ||
2585 | svp = AvARRAY(comppad_name); | |
2586 | for (i = min_intro_pending; i <= max_intro_pending; i++) { | |
2587 | if ((sv = svp[i]) && sv != &sv_undef && !SvIVX(sv)) { | |
2588 | SvIVX(sv) = 999999999; /* Don't know scope end yet. */ | |
2589 | SvNVX(sv) = (double)cop_seqmax; | |
2590 | } | |
2591 | } | |
2592 | min_intro_pending = 0; | |
2593 | comppad_name_fill = max_intro_pending; /* Needn't search higher */ | |
2594 | return cop_seqmax++; | |
2595 | } | |
2596 | ||
79072805 LW |
2597 | OP * |
2598 | newLOGOP(type, flags, first, other) | |
2599 | I32 type; | |
2600 | I32 flags; | |
2601 | OP* first; | |
2602 | OP* other; | |
2603 | { | |
11343788 | 2604 | dTHR; |
79072805 | 2605 | LOGOP *logop; |
11343788 | 2606 | OP *o; |
79072805 | 2607 | |
a0d0e21e LW |
2608 | if (type == OP_XOR) /* Not short circuit, but here by precedence. */ |
2609 | return newBINOP(type, flags, scalar(first), scalar(other)); | |
2610 | ||
8990e307 | 2611 | scalarboolean(first); |
79072805 LW |
2612 | /* optimize "!a && b" to "a || b", and "!a || b" to "a && b" */ |
2613 | if (first->op_type == OP_NOT && (first->op_flags & OPf_SPECIAL)) { | |
2614 | if (type == OP_AND || type == OP_OR) { | |
2615 | if (type == OP_AND) | |
2616 | type = OP_OR; | |
2617 | else | |
2618 | type = OP_AND; | |
11343788 MB |
2619 | o = first; |
2620 | first = cUNOPo->op_first; | |
2621 | if (o->op_next) | |
2622 | first->op_next = o->op_next; | |
2623 | cUNOPo->op_first = Nullop; | |
2624 | op_free(o); | |
79072805 LW |
2625 | } |
2626 | } | |
2627 | if (first->op_type == OP_CONST) { | |
93a17b20 | 2628 | if (dowarn && (first->op_private & OPpCONST_BARE)) |
c07a80fd | 2629 | warn("Probable precedence problem on %s", op_desc[type]); |
79072805 LW |
2630 | if ((type == OP_AND) == (SvTRUE(((SVOP*)first)->op_sv))) { |
2631 | op_free(first); | |
2632 | return other; | |
2633 | } | |
2634 | else { | |
2635 | op_free(other); | |
2636 | return first; | |
2637 | } | |
2638 | } | |
2639 | else if (first->op_type == OP_WANTARRAY) { | |
2640 | if (type == OP_AND) | |
2641 | list(other); | |
2642 | else | |
2643 | scalar(other); | |
2644 | } | |
a6006777 | 2645 | else if (dowarn && (first->op_flags & OPf_KIDS)) { |
2646 | OP *k1 = ((UNOP*)first)->op_first; | |
2647 | OP *k2 = k1->op_sibling; | |
2648 | OPCODE warnop = 0; | |
2649 | switch (first->op_type) | |
2650 | { | |
2651 | case OP_NULL: | |
2652 | if (k2 && k2->op_type == OP_READLINE | |
2653 | && (k2->op_flags & OPf_STACKED) | |
2654 | && (k1->op_type == OP_RV2SV || k1->op_type == OP_PADSV)) | |
2655 | warnop = k2->op_type; | |
2656 | break; | |
2657 | ||
2658 | case OP_SASSIGN: | |
68dc0745 | 2659 | if (k1->op_type == OP_READDIR |
2660 | || k1->op_type == OP_GLOB | |
2661 | || k1->op_type == OP_EACH) | |
a6006777 | 2662 | warnop = k1->op_type; |
2663 | break; | |
2664 | } | |
8ebc5c01 | 2665 | if (warnop) { |
2666 | line_t oldline = curcop->cop_line; | |
2667 | curcop->cop_line = copline; | |
68dc0745 | 2668 | warn("Value of %s%s can be \"0\"; test with defined()", |
2669 | op_desc[warnop], | |
2670 | ((warnop == OP_READLINE || warnop == OP_GLOB) | |
2671 | ? " construct" : "() operator")); | |
2672 | curcop->cop_line = oldline; | |
8ebc5c01 | 2673 | } |
a6006777 | 2674 | } |
79072805 LW |
2675 | |
2676 | if (!other) | |
2677 | return first; | |
2678 | ||
a0d0e21e LW |
2679 | if (type == OP_ANDASSIGN || type == OP_ORASSIGN) |
2680 | other->op_private |= OPpASSIGN_BACKWARDS; /* other is an OP_SASSIGN */ | |
2681 | ||
79072805 LW |
2682 | Newz(1101, logop, 1, LOGOP); |
2683 | ||
2684 | logop->op_type = type; | |
2685 | logop->op_ppaddr = ppaddr[type]; | |
2686 | logop->op_first = first; | |
2687 | logop->op_flags = flags | OPf_KIDS; | |
2688 | logop->op_other = LINKLIST(other); | |
c07a80fd | 2689 | logop->op_private = 1 | (flags >> 8); |
79072805 LW |
2690 | |
2691 | /* establish postfix order */ | |
2692 | logop->op_next = LINKLIST(first); | |
2693 | first->op_next = (OP*)logop; | |
2694 | first->op_sibling = other; | |
2695 | ||
11343788 MB |
2696 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
2697 | other->op_next = o; | |
79072805 | 2698 | |
11343788 | 2699 | return o; |
79072805 LW |
2700 | } |
2701 | ||
2702 | OP * | |
b1cb66bf | 2703 | newCONDOP(flags, first, trueop, falseop) |
79072805 LW |
2704 | I32 flags; |
2705 | OP* first; | |
b1cb66bf | 2706 | OP* trueop; |
2707 | OP* falseop; | |
79072805 | 2708 | { |
11343788 | 2709 | dTHR; |
79072805 | 2710 | CONDOP *condop; |
11343788 | 2711 | OP *o; |
79072805 | 2712 | |
b1cb66bf | 2713 | if (!falseop) |
2714 | return newLOGOP(OP_AND, 0, first, trueop); | |
2715 | if (!trueop) | |
2716 | return newLOGOP(OP_OR, 0, first, falseop); | |
79072805 | 2717 | |
8990e307 | 2718 | scalarboolean(first); |
79072805 LW |
2719 | if (first->op_type == OP_CONST) { |
2720 | if (SvTRUE(((SVOP*)first)->op_sv)) { | |
2721 | op_free(first); | |
b1cb66bf | 2722 | op_free(falseop); |
2723 | return trueop; | |
79072805 LW |
2724 | } |
2725 | else { | |
2726 | op_free(first); | |
b1cb66bf | 2727 | op_free(trueop); |
2728 | return falseop; | |
79072805 LW |
2729 | } |
2730 | } | |
2731 | else if (first->op_type == OP_WANTARRAY) { | |
b1cb66bf | 2732 | list(trueop); |
2733 | scalar(falseop); | |
79072805 LW |
2734 | } |
2735 | Newz(1101, condop, 1, CONDOP); | |
2736 | ||
2737 | condop->op_type = OP_COND_EXPR; | |
2738 | condop->op_ppaddr = ppaddr[OP_COND_EXPR]; | |
2739 | condop->op_first = first; | |
2740 | condop->op_flags = flags | OPf_KIDS; | |
b1cb66bf | 2741 | condop->op_true = LINKLIST(trueop); |
2742 | condop->op_false = LINKLIST(falseop); | |
c07a80fd | 2743 | condop->op_private = 1 | (flags >> 8); |
79072805 LW |
2744 | |
2745 | /* establish postfix order */ | |
2746 | condop->op_next = LINKLIST(first); | |
2747 | first->op_next = (OP*)condop; | |
2748 | ||
b1cb66bf | 2749 | first->op_sibling = trueop; |
2750 | trueop->op_sibling = falseop; | |
11343788 | 2751 | o = newUNOP(OP_NULL, 0, (OP*)condop); |
79072805 | 2752 | |
5dc0d613 MB |
2753 | trueop->op_next = o; |
2754 | falseop->op_next = o; | |
79072805 | 2755 | |
11343788 | 2756 | return o; |
79072805 LW |
2757 | } |
2758 | ||
2759 | OP * | |
2760 | newRANGE(flags, left, right) | |
2761 | I32 flags; | |
2762 | OP *left; | |
2763 | OP *right; | |
2764 | { | |
b35b2403 | 2765 | dTHR; |
79072805 LW |
2766 | CONDOP *condop; |
2767 | OP *flip; | |
2768 | OP *flop; | |
11343788 | 2769 | OP *o; |
79072805 LW |
2770 | |
2771 | Newz(1101, condop, 1, CONDOP); | |
2772 | ||
2773 | condop->op_type = OP_RANGE; | |
2774 | condop->op_ppaddr = ppaddr[OP_RANGE]; | |
2775 | condop->op_first = left; | |
2776 | condop->op_flags = OPf_KIDS; | |
2777 | condop->op_true = LINKLIST(left); | |
2778 | condop->op_false = LINKLIST(right); | |
c07a80fd | 2779 | condop->op_private = 1 | (flags >> 8); |
79072805 LW |
2780 | |
2781 | left->op_sibling = right; | |
2782 | ||
2783 | condop->op_next = (OP*)condop; | |
2784 | flip = newUNOP(OP_FLIP, flags, (OP*)condop); | |
2785 | flop = newUNOP(OP_FLOP, 0, flip); | |
11343788 | 2786 | o = newUNOP(OP_NULL, 0, flop); |
79072805 LW |
2787 | linklist(flop); |
2788 | ||
2789 | left->op_next = flip; | |
2790 | right->op_next = flop; | |
2791 | ||
ed6116ce | 2792 | condop->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 | 2793 | sv_upgrade(PAD_SV(condop->op_targ), SVt_PVNV); |
ed6116ce | 2794 | flip->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 LW |
2795 | sv_upgrade(PAD_SV(flip->op_targ), SVt_PVNV); |
2796 | ||
2797 | flip->op_private = left->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
2798 | flop->op_private = right->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
2799 | ||
11343788 | 2800 | flip->op_next = o; |
79072805 | 2801 | if (!flip->op_private || !flop->op_private) |
11343788 | 2802 | linklist(o); /* blow off optimizer unless constant */ |
79072805 | 2803 | |
11343788 | 2804 | return o; |
79072805 LW |
2805 | } |
2806 | ||
2807 | OP * | |
2808 | newLOOPOP(flags, debuggable, expr, block) | |
2809 | I32 flags; | |
2810 | I32 debuggable; | |
2811 | OP *expr; | |
2812 | OP *block; | |
2813 | { | |
11343788 | 2814 | dTHR; |
463ee0b2 | 2815 | OP* listop; |
11343788 | 2816 | OP* o; |
463ee0b2 | 2817 | int once = block && block->op_flags & OPf_SPECIAL && |
a0d0e21e | 2818 | (block->op_type == OP_ENTERSUB || block->op_type == OP_NULL); |
93a17b20 | 2819 | |
463ee0b2 LW |
2820 | if (expr) { |
2821 | if (once && expr->op_type == OP_CONST && !SvTRUE(((SVOP*)expr)->op_sv)) | |
2822 | return block; /* do {} while 0 does once */ | |
774d564b | 2823 | if (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB) { |
2824 | expr = newUNOP(OP_DEFINED, 0, | |
2825 | newASSIGNOP(0, newSVREF(newGVOP(OP_GV, 0, defgv)), 0, expr) ); | |
2826 | } | |
463ee0b2 | 2827 | } |
93a17b20 | 2828 | |
8990e307 | 2829 | listop = append_elem(OP_LINESEQ, block, newOP(OP_UNSTACK, 0)); |
11343788 | 2830 | o = newLOGOP(OP_AND, 0, expr, listop); |
463ee0b2 | 2831 | |
11343788 | 2832 | ((LISTOP*)listop)->op_last->op_next = LINKLIST(o); |
79072805 | 2833 | |
11343788 MB |
2834 | if (once && o != listop) |
2835 | o->op_next = ((LOGOP*)cUNOPo->op_first)->op_other; | |
79072805 | 2836 | |
11343788 MB |
2837 | if (o == listop) |
2838 | o = newUNOP(OP_NULL, 0, o); /* or do {} while 1 loses outer block */ | |
748a9306 | 2839 | |
11343788 MB |
2840 | o->op_flags |= flags; |
2841 | o = scope(o); | |
2842 | o->op_flags |= OPf_SPECIAL; /* suppress POPBLOCK curpm restoration*/ | |
2843 | return o; | |
79072805 LW |
2844 | } |
2845 | ||
2846 | OP * | |
2847 | newWHILEOP(flags, debuggable, loop, expr, block, cont) | |
2848 | I32 flags; | |
2849 | I32 debuggable; | |
2850 | LOOP *loop; | |
2851 | OP *expr; | |
2852 | OP *block; | |
2853 | OP *cont; | |
2854 | { | |
11343788 | 2855 | dTHR; |
79072805 LW |
2856 | OP *redo; |
2857 | OP *next = 0; | |
2858 | OP *listop; | |
11343788 | 2859 | OP *o; |
79072805 LW |
2860 | OP *condop; |
2861 | ||
748a9306 LW |
2862 | if (expr && (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB)) { |
2863 | expr = newUNOP(OP_DEFINED, 0, | |
2864 | newASSIGNOP(0, newSVREF(newGVOP(OP_GV, 0, defgv)), 0, expr) ); | |
2865 | } | |
79072805 LW |
2866 | |
2867 | if (!block) | |
2868 | block = newOP(OP_NULL, 0); | |
2869 | ||
2870 | if (cont) | |
2871 | next = LINKLIST(cont); | |
2872 | if (expr) | |
2873 | cont = append_elem(OP_LINESEQ, cont, newOP(OP_UNSTACK, 0)); | |
2874 | ||
463ee0b2 | 2875 | listop = append_list(OP_LINESEQ, (LISTOP*)block, (LISTOP*)cont); |
79072805 LW |
2876 | redo = LINKLIST(listop); |
2877 | ||
2878 | if (expr) { | |
11343788 MB |
2879 | o = newLOGOP(OP_AND, 0, expr, scalar(listop)); |
2880 | if (o == expr && o->op_type == OP_CONST && !SvTRUE(cSVOPo->op_sv)) { | |
85e6fe83 | 2881 | op_free(expr); /* oops, it's a while (0) */ |
463ee0b2 LW |
2882 | op_free((OP*)loop); |
2883 | return Nullop; /* (listop already freed by newLOGOP) */ | |
2884 | } | |
79072805 | 2885 | ((LISTOP*)listop)->op_last->op_next = condop = |
11343788 | 2886 | (o == listop ? redo : LINKLIST(o)); |
79072805 LW |
2887 | if (!next) |
2888 | next = condop; | |
2889 | } | |
2890 | else | |
11343788 | 2891 | o = listop; |
79072805 LW |
2892 | |
2893 | if (!loop) { | |
2894 | Newz(1101,loop,1,LOOP); | |
2895 | loop->op_type = OP_ENTERLOOP; | |
2896 | loop->op_ppaddr = ppaddr[OP_ENTERLOOP]; | |
2897 | loop->op_private = 0; | |
2898 | loop->op_next = (OP*)loop; | |
2899 | } | |
2900 | ||
11343788 | 2901 | o = newBINOP(OP_LEAVELOOP, 0, (OP*)loop, o); |
79072805 LW |
2902 | |
2903 | loop->op_redoop = redo; | |
11343788 | 2904 | loop->op_lastop = o; |
79072805 LW |
2905 | |
2906 | if (next) | |
2907 | loop->op_nextop = next; | |
2908 | else | |
11343788 | 2909 | loop->op_nextop = o; |
79072805 | 2910 | |
11343788 MB |
2911 | o->op_flags |= flags; |
2912 | o->op_private |= (flags >> 8); | |
2913 | return o; | |
79072805 LW |
2914 | } |
2915 | ||
2916 | OP * | |
a0d0e21e | 2917 | #ifndef CAN_PROTOTYPE |
79072805 LW |
2918 | newFOROP(flags,label,forline,sv,expr,block,cont) |
2919 | I32 flags; | |
2920 | char *label; | |
2921 | line_t forline; | |
2922 | OP* sv; | |
2923 | OP* expr; | |
2924 | OP*block; | |
2925 | OP*cont; | |
8990e307 LW |
2926 | #else |
2927 | newFOROP(I32 flags,char *label,line_t forline,OP *sv,OP *expr,OP *block,OP *cont) | |
a0d0e21e | 2928 | #endif /* CAN_PROTOTYPE */ |
79072805 LW |
2929 | { |
2930 | LOOP *loop; | |
85e6fe83 | 2931 | int padoff = 0; |
4633a7c4 | 2932 | I32 iterflags = 0; |
79072805 LW |
2933 | |
2934 | copline = forline; | |
2935 | if (sv) { | |
85e6fe83 | 2936 | if (sv->op_type == OP_RV2SV) { /* symbol table variable */ |
748a9306 LW |
2937 | sv->op_type = OP_RV2GV; |
2938 | sv->op_ppaddr = ppaddr[OP_RV2GV]; | |
79072805 | 2939 | } |
85e6fe83 LW |
2940 | else if (sv->op_type == OP_PADSV) { /* private variable */ |
2941 | padoff = sv->op_targ; | |
2942 | op_free(sv); | |
2943 | sv = Nullop; | |
2944 | } | |
79072805 | 2945 | else |
c07a80fd | 2946 | croak("Can't use %s for loop variable", op_desc[sv->op_type]); |
79072805 LW |
2947 | } |
2948 | else { | |
2949 | sv = newGVOP(OP_GV, 0, defgv); | |
2950 | } | |
5f05dabc | 2951 | if (expr->op_type == OP_RV2AV || expr->op_type == OP_PADAV) { |
4633a7c4 LW |
2952 | expr = scalar(ref(expr, OP_ITER)); |
2953 | iterflags |= OPf_STACKED; | |
2954 | } | |
2955 | loop = (LOOP*)list(convert(OP_ENTERITER, iterflags, | |
a0d0e21e LW |
2956 | append_elem(OP_LIST, mod(force_list(expr), OP_GREPSTART), |
2957 | scalar(sv)))); | |
85e6fe83 LW |
2958 | assert(!loop->op_next); |
2959 | Renew(loop, 1, LOOP); | |
2960 | loop->op_targ = padoff; | |
2961 | return newSTATEOP(0, label, newWHILEOP(flags, 1, loop, | |
2962 | newOP(OP_ITER, 0), block, cont)); | |
79072805 LW |
2963 | } |
2964 | ||
8990e307 LW |
2965 | OP* |
2966 | newLOOPEX(type, label) | |
2967 | I32 type; | |
2968 | OP* label; | |
2969 | { | |
11343788 MB |
2970 | dTHR; |
2971 | OP *o; | |
8990e307 | 2972 | if (type != OP_GOTO || label->op_type == OP_CONST) { |
11343788 | 2973 | o = newPVOP(type, 0, savepv( |
a0d0e21e LW |
2974 | label->op_type == OP_CONST |
2975 | ? SvPVx(((SVOP*)label)->op_sv, na) | |
2976 | : "" )); | |
8990e307 LW |
2977 | op_free(label); |
2978 | } | |
2979 | else { | |
a0d0e21e LW |
2980 | if (label->op_type == OP_ENTERSUB) |
2981 | label = newUNOP(OP_REFGEN, 0, mod(label, OP_REFGEN)); | |
11343788 | 2982 | o = newUNOP(type, OPf_STACKED, label); |
8990e307 | 2983 | } |
85e6fe83 | 2984 | hints |= HINT_BLOCK_SCOPE; |
11343788 | 2985 | return o; |
8990e307 LW |
2986 | } |
2987 | ||
79072805 | 2988 | void |
85e6fe83 | 2989 | cv_undef(cv) |
79072805 LW |
2990 | CV *cv; |
2991 | { | |
11343788 MB |
2992 | dTHR; |
2993 | #ifdef USE_THREADS | |
2994 | MUTEX_DESTROY(CvMUTEXP(cv)); | |
2995 | Safefree(CvMUTEXP(cv)); | |
2996 | if (CvCONDP(cv)) { | |
2997 | COND_DESTROY(CvCONDP(cv)); | |
2998 | Safefree(CvCONDP(cv)); | |
2999 | } | |
3000 | #endif /* USE_THREADS */ | |
3001 | ||
a0d0e21e | 3002 | if (!CvXSUB(cv) && CvROOT(cv)) { |
11343788 MB |
3003 | #ifdef USE_THREADS |
3004 | if (CvDEPTH(cv) || (CvOWNER(cv) && CvOWNER(cv) != thr)) | |
3005 | croak("Can't undef active subroutine"); | |
3006 | #else | |
a0d0e21e LW |
3007 | if (CvDEPTH(cv)) |
3008 | croak("Can't undef active subroutine"); | |
11343788 | 3009 | #endif /* USE_THREADS */ |
8990e307 | 3010 | ENTER; |
a0d0e21e LW |
3011 | |
3012 | SAVESPTR(curpad); | |
3013 | curpad = 0; | |
3014 | ||
a5f75d66 | 3015 | if (!CvCLONED(cv)) |
748a9306 | 3016 | op_free(CvROOT(cv)); |
79072805 | 3017 | CvROOT(cv) = Nullop; |
8990e307 | 3018 | LEAVE; |
79072805 | 3019 | } |
1d5db326 | 3020 | SvPOK_off((SV*)cv); /* forget prototype */ |
44a8e56a | 3021 | CvFLAGS(cv) = 0; |
8e07c86e AD |
3022 | SvREFCNT_dec(CvGV(cv)); |
3023 | CvGV(cv) = Nullgv; | |
3024 | SvREFCNT_dec(CvOUTSIDE(cv)); | |
3025 | CvOUTSIDE(cv) = Nullcv; | |
3026 | if (CvPADLIST(cv)) { | |
8ebc5c01 | 3027 | /* may be during global destruction */ |
3028 | if (SvREFCNT(CvPADLIST(cv))) { | |
3029 | I32 i = AvFILL(CvPADLIST(cv)); | |
3030 | while (i >= 0) { | |
3031 | SV** svp = av_fetch(CvPADLIST(cv), i--, FALSE); | |
46fc3d4c | 3032 | SV* sv = svp ? *svp : Nullsv; |
3033 | if (!sv) | |
3034 | continue; | |
3035 | if (sv == (SV*)comppad_name) | |
3036 | comppad_name = Nullav; | |
3037 | else if (sv == (SV*)comppad) { | |
3038 | comppad = Nullav; | |
3039 | curpad = Null(SV**); | |
3040 | } | |
3041 | SvREFCNT_dec(sv); | |
8ebc5c01 | 3042 | } |
3043 | SvREFCNT_dec((SV*)CvPADLIST(cv)); | |
8e07c86e | 3044 | } |
8e07c86e AD |
3045 | CvPADLIST(cv) = Nullav; |
3046 | } | |
79072805 LW |
3047 | } |
3048 | ||
5f05dabc | 3049 | #ifdef DEBUG_CLOSURES |
3050 | static void | |
3051 | cv_dump(cv) | |
3052 | CV* cv; | |
3053 | { | |
3054 | CV *outside = CvOUTSIDE(cv); | |
3055 | AV* padlist = CvPADLIST(cv); | |
4fdae800 | 3056 | AV* pad_name; |
3057 | AV* pad; | |
3058 | SV** pname; | |
3059 | SV** ppad; | |
5f05dabc | 3060 | I32 ix; |
3061 | ||
3062 | PerlIO_printf(Perl_debug_log, "\tCV=0x%p (%s), OUTSIDE=0x%p (%s)\n", | |
ab50184a CS |
3063 | cv, |
3064 | (CvANON(cv) ? "ANON" | |
3065 | : (cv == main_cv) ? "MAIN" | |
07055b4c | 3066 | : CvUNIQUE(outside) ? "UNIQUE" |
44a8e56a | 3067 | : CvGV(cv) ? GvNAME(CvGV(cv)) : "UNDEFINED"), |
ab50184a CS |
3068 | outside, |
3069 | (!outside ? "null" | |
3070 | : CvANON(outside) ? "ANON" | |
3071 | : (outside == main_cv) ? "MAIN" | |
07055b4c | 3072 | : CvUNIQUE(outside) ? "UNIQUE" |
44a8e56a | 3073 | : CvGV(outside) ? GvNAME(CvGV(outside)) : "UNDEFINED")); |
5f05dabc | 3074 | |
4fdae800 | 3075 | if (!padlist) |
3076 | return; | |
3077 | ||
3078 | pad_name = (AV*)*av_fetch(padlist, 0, FALSE); | |
3079 | pad = (AV*)*av_fetch(padlist, 1, FALSE); | |
3080 | pname = AvARRAY(pad_name); | |
3081 | ppad = AvARRAY(pad); | |
3082 | ||
9607fc9c | 3083 | for (ix = 1; ix <= AvFILL(pad_name); ix++) { |
5f05dabc | 3084 | if (SvPOK(pname[ix])) |
4fdae800 | 3085 | PerlIO_printf(Perl_debug_log, "\t%4d. 0x%p (%s\"%s\" %ld-%ld)\n", |
3086 | ix, ppad[ix], | |
3087 | SvFAKE(pname[ix]) ? "FAKE " : "", | |
3088 | SvPVX(pname[ix]), | |
ab50184a CS |
3089 | (long)I_32(SvNVX(pname[ix])), |
3090 | (long)SvIVX(pname[ix])); | |
5f05dabc | 3091 | } |
3092 | } | |
3093 | #endif /* DEBUG_CLOSURES */ | |
3094 | ||
3095 | static CV * | |
3096 | cv_clone2(proto, outside) | |
748a9306 | 3097 | CV* proto; |
5f05dabc | 3098 | CV* outside; |
748a9306 | 3099 | { |
11343788 | 3100 | dTHR; |
748a9306 LW |
3101 | AV* av; |
3102 | I32 ix; | |
3103 | AV* protopadlist = CvPADLIST(proto); | |
3104 | AV* protopad_name = (AV*)*av_fetch(protopadlist, 0, FALSE); | |
3105 | AV* protopad = (AV*)*av_fetch(protopadlist, 1, FALSE); | |
5f05dabc | 3106 | SV** pname = AvARRAY(protopad_name); |
3107 | SV** ppad = AvARRAY(protopad); | |
9607fc9c | 3108 | I32 fname = AvFILL(protopad_name); |
3109 | I32 fpad = AvFILL(protopad); | |
748a9306 LW |
3110 | AV* comppadlist; |
3111 | CV* cv; | |
3112 | ||
07055b4c CS |
3113 | assert(!CvUNIQUE(proto)); |
3114 | ||
748a9306 LW |
3115 | ENTER; |
3116 | SAVESPTR(curpad); | |
3117 | SAVESPTR(comppad); | |
46fc3d4c | 3118 | SAVESPTR(comppad_name); |
748a9306 LW |
3119 | SAVESPTR(compcv); |
3120 | ||
3121 | cv = compcv = (CV*)NEWSV(1104,0); | |
fa83b5b6 | 3122 | sv_upgrade((SV *)cv, SvTYPE(proto)); |
a5f75d66 | 3123 | CvCLONED_on(cv); |
5f05dabc | 3124 | if (CvANON(proto)) |
3125 | CvANON_on(cv); | |
748a9306 | 3126 | |
11343788 MB |
3127 | #ifdef USE_THREADS |
3128 | New(666, CvMUTEXP(cv), 1, pthread_mutex_t); | |
3129 | MUTEX_INIT(CvMUTEXP(cv)); | |
3130 | New(666, CvCONDP(cv), 1, pthread_cond_t); | |
3131 | COND_INIT(CvCONDP(cv)); | |
3132 | CvOWNER(cv) = 0; | |
3133 | #endif /* USE_THREADS */ | |
748a9306 | 3134 | CvFILEGV(cv) = CvFILEGV(proto); |
44a8e56a | 3135 | CvGV(cv) = (GV*)SvREFCNT_inc(CvGV(proto)); |
748a9306 LW |
3136 | CvSTASH(cv) = CvSTASH(proto); |
3137 | CvROOT(cv) = CvROOT(proto); | |
3138 | CvSTART(cv) = CvSTART(proto); | |
5f05dabc | 3139 | if (outside) |
3140 | CvOUTSIDE(cv) = (CV*)SvREFCNT_inc(outside); | |
748a9306 | 3141 | |
68dc0745 | 3142 | if (SvPOK(proto)) |
3143 | sv_setpvn((SV*)cv, SvPVX(proto), SvCUR(proto)); | |
3144 | ||
46fc3d4c | 3145 | comppad_name = newAV(); |
3146 | for (ix = fname; ix >= 0; ix--) | |
3147 | av_store(comppad_name, ix, SvREFCNT_inc(pname[ix])); | |
748a9306 LW |
3148 | |
3149 | comppad = newAV(); | |
3150 | ||
3151 | comppadlist = newAV(); | |
3152 | AvREAL_off(comppadlist); | |
46fc3d4c | 3153 | av_store(comppadlist, 0, (SV*)comppad_name); |
b355b4e0 | 3154 | av_store(comppadlist, 1, (SV*)comppad); |
748a9306 | 3155 | CvPADLIST(cv) = comppadlist; |
5f05dabc | 3156 | av_fill(comppad, AvFILL(protopad)); |
748a9306 LW |
3157 | curpad = AvARRAY(comppad); |
3158 | ||
3159 | av = newAV(); /* will be @_ */ | |
3160 | av_extend(av, 0); | |
3161 | av_store(comppad, 0, (SV*)av); | |
3162 | AvFLAGS(av) = AVf_REIFY; | |
3163 | ||
9607fc9c | 3164 | for (ix = fpad; ix > 0; ix--) { |
3165 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; | |
aa689395 | 3166 | if (namesv && namesv != &sv_undef) { |
3167 | char *name = SvPVX(namesv); /* XXX */ | |
3168 | if (SvFLAGS(namesv) & SVf_FAKE) { /* lexical from outside? */ | |
3169 | I32 off = pad_findlex(name, ix, SvIVX(namesv), | |
5f05dabc | 3170 | CvOUTSIDE(cv), cxstack_ix); |
3171 | if (!off) | |
3172 | curpad[ix] = SvREFCNT_inc(ppad[ix]); | |
3173 | else if (off != ix) | |
748a9306 LW |
3174 | croak("panic: cv_clone: %s", name); |
3175 | } | |
3176 | else { /* our own lexical */ | |
aa689395 | 3177 | SV* sv; |
5f05dabc | 3178 | if (*name == '&') { |
3179 | /* anon code -- we'll come back for it */ | |
3180 | sv = SvREFCNT_inc(ppad[ix]); | |
3181 | } | |
3182 | else if (*name == '@') | |
3183 | sv = (SV*)newAV(); | |
748a9306 | 3184 | else if (*name == '%') |
5f05dabc | 3185 | sv = (SV*)newHV(); |
748a9306 | 3186 | else |
5f05dabc | 3187 | sv = NEWSV(0,0); |
3188 | if (!SvPADBUSY(sv)) | |
3189 | SvPADMY_on(sv); | |
3190 | curpad[ix] = sv; | |
748a9306 LW |
3191 | } |
3192 | } | |
3193 | else { | |
aa689395 | 3194 | SV* sv = NEWSV(0,0); |
748a9306 | 3195 | SvPADTMP_on(sv); |
5f05dabc | 3196 | curpad[ix] = sv; |
748a9306 LW |
3197 | } |
3198 | } | |
3199 | ||
5f05dabc | 3200 | /* Now that vars are all in place, clone nested closures. */ |
3201 | ||
9607fc9c | 3202 | for (ix = fpad; ix > 0; ix--) { |
3203 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; | |
aa689395 | 3204 | if (namesv |
3205 | && namesv != &sv_undef | |
3206 | && !(SvFLAGS(namesv) & SVf_FAKE) | |
3207 | && *SvPVX(namesv) == '&' | |
5f05dabc | 3208 | && CvCLONE(ppad[ix])) |
3209 | { | |
3210 | CV *kid = cv_clone2((CV*)ppad[ix], cv); | |
3211 | SvREFCNT_dec(ppad[ix]); | |
3212 | CvCLONE_on(kid); | |
3213 | SvPADMY_on(kid); | |
3214 | curpad[ix] = (SV*)kid; | |
748a9306 LW |
3215 | } |
3216 | } | |
3217 | ||
5f05dabc | 3218 | #ifdef DEBUG_CLOSURES |
ab50184a CS |
3219 | PerlIO_printf(Perl_debug_log, "Cloned inside:\n"); |
3220 | cv_dump(outside); | |
3221 | PerlIO_printf(Perl_debug_log, " from:\n"); | |
5f05dabc | 3222 | cv_dump(proto); |
ab50184a | 3223 | PerlIO_printf(Perl_debug_log, " to:\n"); |
5f05dabc | 3224 | cv_dump(cv); |
3225 | #endif | |
3226 | ||
748a9306 LW |
3227 | LEAVE; |
3228 | return cv; | |
3229 | } | |
3230 | ||
3231 | CV * | |
5f05dabc | 3232 | cv_clone(proto) |
3233 | CV* proto; | |
3234 | { | |
3235 | return cv_clone2(proto, CvOUTSIDE(proto)); | |
3236 | } | |
3237 | ||
3fe9a6f1 | 3238 | void |
3239 | cv_ckproto(cv, gv, p) | |
3240 | CV* cv; | |
3241 | GV* gv; | |
3242 | char* p; | |
3243 | { | |
3244 | if ((!p != !SvPOK(cv)) || (p && strNE(p, SvPVX(cv)))) { | |
46fc3d4c | 3245 | SV* msg = sv_newmortal(); |
3fe9a6f1 | 3246 | SV* name = Nullsv; |
3247 | ||
3248 | if (gv) | |
46fc3d4c | 3249 | gv_efullname3(name = sv_newmortal(), gv, Nullch); |
3250 | sv_setpv(msg, "Prototype mismatch:"); | |
3251 | if (name) | |
fc36a67e | 3252 | sv_catpvf(msg, " sub %_", name); |
3fe9a6f1 | 3253 | if (SvPOK(cv)) |
46fc3d4c | 3254 | sv_catpvf(msg, " (%s)", SvPVX(cv)); |
3255 | sv_catpv(msg, " vs "); | |
3256 | if (p) | |
3257 | sv_catpvf(msg, "(%s)", p); | |
3258 | else | |
3259 | sv_catpv(msg, "none"); | |
fc36a67e | 3260 | warn("%_", msg); |
3fe9a6f1 | 3261 | } |
3262 | } | |
3263 | ||
760ac839 LW |
3264 | SV * |
3265 | cv_const_sv(cv) | |
3fe9a6f1 | 3266 | CV* cv; |
760ac839 LW |
3267 | { |
3268 | OP *o; | |
54310121 | 3269 | SV *sv; |
760ac839 | 3270 | |
54310121 | 3271 | if (!cv || !SvPOK(cv) || SvCUR(cv)) |
3272 | return Nullsv; | |
760ac839 | 3273 | |
54310121 | 3274 | sv = Nullsv; |
3275 | for (o = CvSTART(cv); o; o = o->op_next) { | |
3276 | OPCODE type = o->op_type; | |
3277 | ||
3278 | if (type == OP_NEXTSTATE || type == OP_NULL || type == OP_PUSHMARK) | |
3279 | continue; | |
3280 | if (type == OP_LEAVESUB || type == OP_RETURN) | |
3281 | break; | |
3282 | if (sv) | |
3283 | return Nullsv; | |
3284 | if (type == OP_CONST) | |
5dc0d613 | 3285 | sv = cSVOPo->op_sv; |
54310121 | 3286 | else if (type == OP_PADSV) { |
3287 | AV* pad = (AV*)(AvARRAY(CvPADLIST(cv))[1]); | |
3288 | sv = pad ? AvARRAY(pad)[o->op_targ] : Nullsv; | |
5aabfad6 | 3289 | if (!sv || (!SvREADONLY(sv) && SvREFCNT(sv) > 1)) |
54310121 | 3290 | return Nullsv; |
760ac839 | 3291 | } |
54310121 | 3292 | else |
3293 | return Nullsv; | |
760ac839 | 3294 | } |
5aabfad6 | 3295 | if (sv) |
3296 | SvREADONLY_on(sv); | |
760ac839 LW |
3297 | return sv; |
3298 | } | |
3299 | ||
748a9306 | 3300 | CV * |
11343788 | 3301 | newSUB(floor,o,proto,block) |
79072805 | 3302 | I32 floor; |
11343788 | 3303 | OP *o; |
4633a7c4 | 3304 | OP *proto; |
79072805 LW |
3305 | OP *block; |
3306 | { | |
11343788 | 3307 | dTHR; |
5dc0d613 | 3308 | char *name = o ? SvPVx(cSVOPo->op_sv, na) : Nullch; |
44a8e56a | 3309 | GV *gv = gv_fetchpv(name ? name : "__ANON__", GV_ADDMULTI, SVt_PVCV); |
3fe9a6f1 | 3310 | char *ps = proto ? SvPVx(((SVOP*)proto)->op_sv, na) : Nullch; |
79072805 | 3311 | register CV *cv; |
a0d0e21e | 3312 | I32 ix; |
79072805 | 3313 | |
11343788 | 3314 | if (o) |
5dc0d613 | 3315 | SAVEFREEOP(o); |
3fe9a6f1 | 3316 | if (proto) |
3317 | SAVEFREEOP(proto); | |
3318 | ||
68dc0745 | 3319 | if (!name || GvCVGEN(gv)) |
3320 | cv = Nullcv; | |
3321 | else if (cv = GvCV(gv)) { | |
3fe9a6f1 | 3322 | cv_ckproto(cv, gv, ps); |
68dc0745 | 3323 | /* already defined (or promised)? */ |
3324 | if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
3325 | SV* const_sv; | |
aa689395 | 3326 | if (!block) { |
3327 | /* just a "sub foo;" when &foo is already defined */ | |
3328 | SAVEFREESV(compcv); | |
3329 | goto done; | |
3330 | } | |
7bac28a0 | 3331 | /* ahem, death to those who redefine active sort subs */ |
3332 | if (curstack == sortstack && sortcop == CvSTART(cv)) | |
3333 | croak("Can't redefine active sort subroutine %s", name); | |
68dc0745 | 3334 | const_sv = cv_const_sv(cv); |
44a8e56a | 3335 | if (const_sv || dowarn) { |
79072805 | 3336 | line_t oldline = curcop->cop_line; |
79072805 | 3337 | curcop->cop_line = copline; |
760ac839 | 3338 | warn(const_sv ? "Constant subroutine %s redefined" |
68dc0745 | 3339 | : "Subroutine %s redefined", name); |
79072805 LW |
3340 | curcop->cop_line = oldline; |
3341 | } | |
8990e307 | 3342 | SvREFCNT_dec(cv); |
68dc0745 | 3343 | cv = Nullcv; |
79072805 LW |
3344 | } |
3345 | } | |
a0d0e21e | 3346 | if (cv) { /* must reuse cv if autoloaded */ |
4633a7c4 | 3347 | cv_undef(cv); |
44a8e56a | 3348 | CvFLAGS(cv) = CvFLAGS(compcv); |
748a9306 | 3349 | CvOUTSIDE(cv) = CvOUTSIDE(compcv); |
e9a444f0 | 3350 | CvOUTSIDE(compcv) = 0; |
748a9306 | 3351 | CvPADLIST(cv) = CvPADLIST(compcv); |
4aa0a1f7 | 3352 | CvPADLIST(compcv) = 0; |
4633a7c4 LW |
3353 | if (SvREFCNT(compcv) > 1) /* XXX Make closures transit through stub. */ |
3354 | CvOUTSIDE(compcv) = (CV*)SvREFCNT_inc((SV*)cv); | |
748a9306 | 3355 | SvREFCNT_dec(compcv); |
a0d0e21e LW |
3356 | } |
3357 | else { | |
748a9306 | 3358 | cv = compcv; |
44a8e56a | 3359 | if (name) { |
3360 | GvCV(gv) = cv; | |
3361 | GvCVGEN(gv) = 0; | |
3362 | sub_generation++; | |
3363 | } | |
a0d0e21e | 3364 | } |
44a8e56a | 3365 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
79072805 | 3366 | CvFILEGV(cv) = curcop->cop_filegv; |
8990e307 | 3367 | CvSTASH(cv) = curstash; |
11343788 MB |
3368 | #ifdef USE_THREADS |
3369 | CvOWNER(cv) = 0; | |
3370 | New(666, CvMUTEXP(cv), 1, pthread_mutex_t); | |
3371 | MUTEX_INIT(CvMUTEXP(cv)); | |
3372 | New(666, CvCONDP(cv), 1, pthread_cond_t); | |
3373 | COND_INIT(CvCONDP(cv)); | |
3374 | #endif /* USE_THREADS */ | |
8990e307 | 3375 | |
3fe9a6f1 | 3376 | if (ps) |
3377 | sv_setpv((SV*)cv, ps); | |
4633a7c4 | 3378 | |
c07a80fd | 3379 | if (error_count) { |
3380 | op_free(block); | |
3381 | block = Nullop; | |
68dc0745 | 3382 | if (name) { |
3383 | char *s = strrchr(name, ':'); | |
3384 | s = s ? s+1 : name; | |
6d4c2119 CS |
3385 | if (strEQ(s, "BEGIN")) { |
3386 | char *not_safe = | |
3387 | "BEGIN not safe after errors--compilation aborted"; | |
3388 | if (in_eval & 4) | |
3389 | croak(not_safe); | |
3390 | else { | |
3391 | /* force display of errors found but not reported */ | |
3392 | sv_catpv(GvSV(errgv), not_safe); | |
3393 | croak("%s", SvPVx(GvSV(errgv), na)); | |
3394 | } | |
3395 | } | |
68dc0745 | 3396 | } |
c07a80fd | 3397 | } |
a0d0e21e | 3398 | if (!block) { |
a0d0e21e LW |
3399 | copline = NOLINE; |
3400 | LEAVE_SCOPE(floor); | |
3401 | return cv; | |
3402 | } | |
3403 | ||
54310121 | 3404 | if (AvFILL(comppad_name) < AvFILL(comppad)) |
3405 | av_store(comppad_name, AvFILL(comppad), Nullsv); | |
a0d0e21e | 3406 | |
54310121 | 3407 | if (CvCLONE(cv)) { |
3408 | SV **namep = AvARRAY(comppad_name); | |
3409 | for (ix = AvFILL(comppad); ix > 0; ix--) { | |
3410 | SV *namesv; | |
3411 | ||
3412 | if (SvIMMORTAL(curpad[ix])) | |
3413 | continue; | |
3414 | /* | |
3415 | * The only things that a clonable function needs in its | |
3416 | * pad are references to outer lexicals and anonymous subs. | |
3417 | * The rest are created anew during cloning. | |
3418 | */ | |
3419 | if (!((namesv = namep[ix]) != Nullsv && | |
3420 | namesv != &sv_undef && | |
3421 | (SvFAKE(namesv) || | |
3422 | *SvPVX(namesv) == '&'))) | |
3423 | { | |
3424 | SvREFCNT_dec(curpad[ix]); | |
3425 | curpad[ix] = Nullsv; | |
3426 | } | |
3427 | } | |
a0d0e21e | 3428 | } |
54310121 | 3429 | else { |
3430 | AV *av = newAV(); /* Will be @_ */ | |
3431 | av_extend(av, 0); | |
3432 | av_store(comppad, 0, (SV*)av); | |
3433 | AvFLAGS(av) = AVf_REIFY; | |
79072805 | 3434 | |
54310121 | 3435 | for (ix = AvFILL(comppad); ix > 0; ix--) { |
3436 | if (SvIMMORTAL(curpad[ix])) | |
3437 | continue; | |
3438 | if (!SvPADMY(curpad[ix])) | |
3439 | SvPADTMP_on(curpad[ix]); | |
3440 | } | |
3441 | } | |
79072805 | 3442 | |
a0d0e21e | 3443 | CvROOT(cv) = newUNOP(OP_LEAVESUB, 0, scalarseq(block)); |
79072805 LW |
3444 | CvSTART(cv) = LINKLIST(CvROOT(cv)); |
3445 | CvROOT(cv)->op_next = 0; | |
3446 | peep(CvSTART(cv)); | |
93a17b20 | 3447 | |
44a8e56a | 3448 | if (name) { |
3449 | char *s; | |
3450 | ||
3451 | if (perldb && curstash != debstash) { | |
46fc3d4c | 3452 | SV *sv = NEWSV(0,0); |
44a8e56a | 3453 | SV *tmpstr = sv_newmortal(); |
3454 | static GV *db_postponed; | |
3455 | CV *cv; | |
3456 | HV *hv; | |
3457 | ||
fc36a67e | 3458 | sv_setpvf(sv, "%_:%ld-%ld", |
46fc3d4c | 3459 | GvSV(curcop->cop_filegv), |
3460 | (long)subline, (long)curcop->cop_line); | |
44a8e56a | 3461 | gv_efullname3(tmpstr, gv, Nullch); |
3462 | hv_store(GvHV(DBsub), SvPVX(tmpstr), SvCUR(tmpstr), sv, 0); | |
3463 | if (!db_postponed) { | |
6bbcb22c | 3464 | db_postponed = gv_fetchpv("DB::postponed", GV_ADDMULTI, SVt_PVHV); |
44a8e56a | 3465 | } |
3466 | hv = GvHVn(db_postponed); | |
9607fc9c | 3467 | if (HvFILL(hv) > 0 && hv_exists(hv, SvPVX(tmpstr), SvCUR(tmpstr)) |
3468 | && (cv = GvCV(db_postponed))) { | |
44a8e56a | 3469 | dSP; |
3470 | PUSHMARK(sp); | |
3471 | XPUSHs(tmpstr); | |
3472 | PUTBACK; | |
3473 | perl_call_sv((SV*)cv, G_DISCARD); | |
3474 | } | |
3475 | } | |
79072805 | 3476 | |
44a8e56a | 3477 | if ((s = strrchr(name,':'))) |
28757baa | 3478 | s++; |
3479 | else | |
3480 | s = name; | |
68dc0745 | 3481 | if (strEQ(s, "BEGIN")) { |
2ae324a7 | 3482 | I32 oldscope = scopestack_ix; |
28757baa | 3483 | ENTER; |
3484 | SAVESPTR(compiling.cop_filegv); | |
3485 | SAVEI16(compiling.cop_line); | |
3486 | SAVEI32(perldb); | |
3487 | save_svref(&rs); | |
3488 | sv_setsv(rs, nrs); | |
3489 | ||
3490 | if (!beginav) | |
3491 | beginav = newAV(); | |
3492 | DEBUG_x( dump_sub(gv) ); | |
3493 | av_push(beginav, (SV *)cv); | |
3494 | GvCV(gv) = 0; | |
68dc0745 | 3495 | call_list(oldscope, beginav); |
a6006777 | 3496 | |
28757baa | 3497 | curcop = &compiling; |
3498 | LEAVE; | |
3499 | } | |
3500 | else if (strEQ(s, "END") && !error_count) { | |
3501 | if (!endav) | |
3502 | endav = newAV(); | |
3503 | av_unshift(endav, 1); | |
3504 | av_store(endav, 0, (SV *)cv); | |
3505 | GvCV(gv) = 0; | |
3506 | } | |
ae77835f MB |
3507 | else if (strEQ(s, "RESTART") && !error_count) { |
3508 | if (!restartav) | |
3509 | restartav = newAV(); | |
3510 | av_push(restartav, SvREFCNT_inc(cv)); | |
3511 | } | |
79072805 | 3512 | } |
a6006777 | 3513 | |
aa689395 | 3514 | done: |
79072805 | 3515 | copline = NOLINE; |
8990e307 | 3516 | LEAVE_SCOPE(floor); |
a0d0e21e | 3517 | return cv; |
79072805 LW |
3518 | } |
3519 | ||
a0d0e21e LW |
3520 | #ifdef DEPRECATED |
3521 | CV * | |
463ee0b2 | 3522 | newXSUB(name, ix, subaddr, filename) |
79072805 LW |
3523 | char *name; |
3524 | I32 ix; | |
3525 | I32 (*subaddr)(); | |
3526 | char *filename; | |
3527 | { | |
a0d0e21e | 3528 | CV* cv = newXS(name, (void(*)())subaddr, filename); |
a5f75d66 | 3529 | CvOLDSTYLE_on(cv); |
a0d0e21e LW |
3530 | CvXSUBANY(cv).any_i32 = ix; |
3531 | return cv; | |
3532 | } | |
3533 | #endif | |
3534 | ||
3535 | CV * | |
3536 | newXS(name, subaddr, filename) | |
3537 | char *name; | |
3538 | void (*subaddr) _((CV*)); | |
3539 | char *filename; | |
3540 | { | |
11343788 | 3541 | dTHR; |
44a8e56a | 3542 | GV *gv = gv_fetchpv(name ? name : "__ANON__", GV_ADDMULTI, SVt_PVCV); |
79072805 | 3543 | register CV *cv; |
44a8e56a | 3544 | |
3545 | if (cv = (name ? GvCV(gv) : Nullcv)) { | |
3546 | if (GvCVGEN(gv)) { | |
3547 | /* just a cached method */ | |
3548 | SvREFCNT_dec(cv); | |
3549 | cv = 0; | |
3550 | } | |
3551 | else if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
3552 | /* already defined (or promised) */ | |
a0d0e21e LW |
3553 | if (dowarn) { |
3554 | line_t oldline = curcop->cop_line; | |
a0d0e21e LW |
3555 | curcop->cop_line = copline; |
3556 | warn("Subroutine %s redefined",name); | |
3557 | curcop->cop_line = oldline; | |
3558 | } | |
3559 | SvREFCNT_dec(cv); | |
3560 | cv = 0; | |
79072805 | 3561 | } |
79072805 | 3562 | } |
44a8e56a | 3563 | |
3564 | if (cv) /* must reuse cv if autoloaded */ | |
3565 | cv_undef(cv); | |
a0d0e21e LW |
3566 | else { |
3567 | cv = (CV*)NEWSV(1105,0); | |
3568 | sv_upgrade((SV *)cv, SVt_PVCV); | |
44a8e56a | 3569 | if (name) { |
3570 | GvCV(gv) = cv; | |
3571 | GvCVGEN(gv) = 0; | |
3572 | sub_generation++; | |
3573 | } | |
a0d0e21e | 3574 | } |
8990e307 | 3575 | CvGV(cv) = SvREFCNT_inc(gv); |
11343788 MB |
3576 | #ifdef USE_THREADS |
3577 | New(666, CvMUTEXP(cv), 1, pthread_mutex_t); | |
3578 | MUTEX_INIT(CvMUTEXP(cv)); | |
3579 | New(666, CvCONDP(cv), 1, pthread_cond_t); | |
3580 | COND_INIT(CvCONDP(cv)); | |
3581 | CvOWNER(cv) = 0; | |
3582 | #endif /* USE_THREADS */ | |
79072805 | 3583 | CvFILEGV(cv) = gv_fetchfile(filename); |
a0d0e21e | 3584 | CvXSUB(cv) = subaddr; |
44a8e56a | 3585 | |
28757baa | 3586 | if (name) { |
3587 | char *s = strrchr(name,':'); | |
3588 | if (s) | |
3589 | s++; | |
3590 | else | |
3591 | s = name; | |
3592 | if (strEQ(s, "BEGIN")) { | |
3593 | if (!beginav) | |
3594 | beginav = newAV(); | |
44a8e56a | 3595 | av_push(beginav, (SV *)cv); |
3596 | GvCV(gv) = 0; | |
28757baa | 3597 | } |
3598 | else if (strEQ(s, "END")) { | |
3599 | if (!endav) | |
3600 | endav = newAV(); | |
3601 | av_unshift(endav, 1); | |
44a8e56a | 3602 | av_store(endav, 0, (SV *)cv); |
3603 | GvCV(gv) = 0; | |
28757baa | 3604 | } |
ae77835f MB |
3605 | else if (strEQ(s, "RESTART")) { |
3606 | if (!restartav) | |
3607 | restartav = newAV(); | |
3608 | av_push(restartav, (SV *)cv); | |
3609 | } | |
28757baa | 3610 | } |
8990e307 | 3611 | else |
a5f75d66 | 3612 | CvANON_on(cv); |
44a8e56a | 3613 | |
a0d0e21e | 3614 | return cv; |
79072805 LW |
3615 | } |
3616 | ||
3617 | void | |
11343788 | 3618 | newFORM(floor,o,block) |
79072805 | 3619 | I32 floor; |
11343788 | 3620 | OP *o; |
79072805 LW |
3621 | OP *block; |
3622 | { | |
11343788 | 3623 | dTHR; |
79072805 LW |
3624 | register CV *cv; |
3625 | char *name; | |
3626 | GV *gv; | |
a0d0e21e | 3627 | I32 ix; |
79072805 | 3628 | |
11343788 MB |
3629 | if (o) |
3630 | name = SvPVx(cSVOPo->op_sv, na); | |
79072805 LW |
3631 | else |
3632 | name = "STDOUT"; | |
85e6fe83 | 3633 | gv = gv_fetchpv(name,TRUE, SVt_PVFM); |
a5f75d66 | 3634 | GvMULTI_on(gv); |
79072805 LW |
3635 | if (cv = GvFORM(gv)) { |
3636 | if (dowarn) { | |
3637 | line_t oldline = curcop->cop_line; | |
3638 | ||
3639 | curcop->cop_line = copline; | |
3640 | warn("Format %s redefined",name); | |
3641 | curcop->cop_line = oldline; | |
3642 | } | |
8990e307 | 3643 | SvREFCNT_dec(cv); |
79072805 | 3644 | } |
748a9306 | 3645 | cv = compcv; |
79072805 | 3646 | GvFORM(gv) = cv; |
44a8e56a | 3647 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
79072805 LW |
3648 | CvFILEGV(cv) = curcop->cop_filegv; |
3649 | ||
a0d0e21e | 3650 | for (ix = AvFILL(comppad); ix > 0; ix--) { |
44a8e56a | 3651 | if (!SvPADMY(curpad[ix]) && !SvIMMORTAL(curpad[ix])) |
a0d0e21e LW |
3652 | SvPADTMP_on(curpad[ix]); |
3653 | } | |
3654 | ||
79072805 LW |
3655 | CvROOT(cv) = newUNOP(OP_LEAVEWRITE, 0, scalarseq(block)); |
3656 | CvSTART(cv) = LINKLIST(CvROOT(cv)); | |
3657 | CvROOT(cv)->op_next = 0; | |
3658 | peep(CvSTART(cv)); | |
11343788 | 3659 | op_free(o); |
79072805 | 3660 | copline = NOLINE; |
8990e307 | 3661 | LEAVE_SCOPE(floor); |
79072805 LW |
3662 | } |
3663 | ||
3664 | OP * | |
11343788 MB |
3665 | newANONLIST(o) |
3666 | OP* o; | |
79072805 | 3667 | { |
93a17b20 | 3668 | return newUNOP(OP_REFGEN, 0, |
11343788 | 3669 | mod(list(convert(OP_ANONLIST, 0, o)), OP_REFGEN)); |
79072805 LW |
3670 | } |
3671 | ||
3672 | OP * | |
11343788 MB |
3673 | newANONHASH(o) |
3674 | OP* o; | |
79072805 | 3675 | { |
93a17b20 | 3676 | return newUNOP(OP_REFGEN, 0, |
11343788 | 3677 | mod(list(convert(OP_ANONHASH, 0, o)), OP_REFGEN)); |
a0d0e21e LW |
3678 | } |
3679 | ||
3680 | OP * | |
4633a7c4 | 3681 | newANONSUB(floor, proto, block) |
a0d0e21e | 3682 | I32 floor; |
4633a7c4 | 3683 | OP *proto; |
a0d0e21e LW |
3684 | OP *block; |
3685 | { | |
3686 | return newUNOP(OP_REFGEN, 0, | |
4633a7c4 | 3687 | newSVOP(OP_ANONCODE, 0, (SV*)newSUB(floor, 0, proto, block))); |
79072805 LW |
3688 | } |
3689 | ||
3690 | OP * | |
3691 | oopsAV(o) | |
3692 | OP *o; | |
3693 | { | |
ed6116ce LW |
3694 | switch (o->op_type) { |
3695 | case OP_PADSV: | |
3696 | o->op_type = OP_PADAV; | |
3697 | o->op_ppaddr = ppaddr[OP_PADAV]; | |
3698 | return ref(newUNOP(OP_RV2AV, 0, scalar(o)), OP_RV2AV); | |
3699 | ||
3700 | case OP_RV2SV: | |
79072805 LW |
3701 | o->op_type = OP_RV2AV; |
3702 | o->op_ppaddr = ppaddr[OP_RV2AV]; | |
3703 | ref(o, OP_RV2AV); | |
ed6116ce LW |
3704 | break; |
3705 | ||
3706 | default: | |
79072805 | 3707 | warn("oops: oopsAV"); |
ed6116ce LW |
3708 | break; |
3709 | } | |
79072805 LW |
3710 | return o; |
3711 | } | |
3712 | ||
3713 | OP * | |
3714 | oopsHV(o) | |
3715 | OP *o; | |
3716 | { | |
ed6116ce LW |
3717 | switch (o->op_type) { |
3718 | case OP_PADSV: | |
3719 | case OP_PADAV: | |
3720 | o->op_type = OP_PADHV; | |
3721 | o->op_ppaddr = ppaddr[OP_PADHV]; | |
3722 | return ref(newUNOP(OP_RV2HV, 0, scalar(o)), OP_RV2HV); | |
3723 | ||
3724 | case OP_RV2SV: | |
3725 | case OP_RV2AV: | |
79072805 LW |
3726 | o->op_type = OP_RV2HV; |
3727 | o->op_ppaddr = ppaddr[OP_RV2HV]; | |
3728 | ref(o, OP_RV2HV); | |
ed6116ce LW |
3729 | break; |
3730 | ||
3731 | default: | |
79072805 | 3732 | warn("oops: oopsHV"); |
ed6116ce LW |
3733 | break; |
3734 | } | |
79072805 LW |
3735 | return o; |
3736 | } | |
3737 | ||
3738 | OP * | |
3739 | newAVREF(o) | |
3740 | OP *o; | |
3741 | { | |
ed6116ce LW |
3742 | if (o->op_type == OP_PADANY) { |
3743 | o->op_type = OP_PADAV; | |
3744 | o->op_ppaddr = ppaddr[OP_PADAV]; | |
93a17b20 | 3745 | return o; |
ed6116ce | 3746 | } |
79072805 LW |
3747 | return newUNOP(OP_RV2AV, 0, scalar(o)); |
3748 | } | |
3749 | ||
3750 | OP * | |
a0d0e21e LW |
3751 | newGVREF(type,o) |
3752 | I32 type; | |
79072805 LW |
3753 | OP *o; |
3754 | { | |
a0d0e21e LW |
3755 | if (type == OP_MAPSTART) |
3756 | return newUNOP(OP_NULL, 0, o); | |
748a9306 | 3757 | return ref(newUNOP(OP_RV2GV, OPf_REF, o), type); |
79072805 LW |
3758 | } |
3759 | ||
3760 | OP * | |
3761 | newHVREF(o) | |
3762 | OP *o; | |
3763 | { | |
ed6116ce LW |
3764 | if (o->op_type == OP_PADANY) { |
3765 | o->op_type = OP_PADHV; | |
3766 | o->op_ppaddr = ppaddr[OP_PADHV]; | |
93a17b20 | 3767 | return o; |
ed6116ce | 3768 | } |
79072805 LW |
3769 | return newUNOP(OP_RV2HV, 0, scalar(o)); |
3770 | } | |
3771 | ||
3772 | OP * | |
3773 | oopsCV(o) | |
3774 | OP *o; | |
3775 | { | |
463ee0b2 | 3776 | croak("NOT IMPL LINE %d",__LINE__); |
79072805 LW |
3777 | /* STUB */ |
3778 | return o; | |
3779 | } | |
3780 | ||
3781 | OP * | |
c07a80fd | 3782 | newCVREF(flags, o) |
3783 | I32 flags; | |
79072805 LW |
3784 | OP *o; |
3785 | { | |
c07a80fd | 3786 | return newUNOP(OP_RV2CV, flags, scalar(o)); |
79072805 LW |
3787 | } |
3788 | ||
3789 | OP * | |
3790 | newSVREF(o) | |
3791 | OP *o; | |
3792 | { | |
ed6116ce LW |
3793 | if (o->op_type == OP_PADANY) { |
3794 | o->op_type = OP_PADSV; | |
3795 | o->op_ppaddr = ppaddr[OP_PADSV]; | |
93a17b20 | 3796 | return o; |
ed6116ce | 3797 | } |
79072805 LW |
3798 | return newUNOP(OP_RV2SV, 0, scalar(o)); |
3799 | } | |
3800 | ||
3801 | /* Check routines. */ | |
3802 | ||
3803 | OP * | |
5dc0d613 MB |
3804 | ck_anoncode(o) |
3805 | OP *o; | |
5f05dabc | 3806 | { |
178c6305 CS |
3807 | PADOFFSET ix; |
3808 | SV* name; | |
3809 | ||
3810 | name = NEWSV(1106,0); | |
3811 | sv_upgrade(name, SVt_PVNV); | |
3812 | sv_setpvn(name, "&", 1); | |
3813 | SvIVX(name) = -1; | |
3814 | SvNVX(name) = 1; | |
5dc0d613 | 3815 | ix = pad_alloc(o->op_type, SVs_PADMY); |
178c6305 | 3816 | av_store(comppad_name, ix, name); |
5dc0d613 MB |
3817 | av_store(comppad, ix, cSVOPo->op_sv); |
3818 | SvPADMY_on(cSVOPo->op_sv); | |
3819 | cSVOPo->op_sv = Nullsv; | |
3820 | cSVOPo->op_targ = ix; | |
3821 | return o; | |
5f05dabc | 3822 | } |
3823 | ||
3824 | OP * | |
5dc0d613 MB |
3825 | ck_bitop(o) |
3826 | OP *o; | |
55497cff | 3827 | { |
5dc0d613 MB |
3828 | o->op_private = hints; |
3829 | return o; | |
55497cff | 3830 | } |
3831 | ||
3832 | OP * | |
11343788 MB |
3833 | ck_concat(o) |
3834 | OP *o; | |
79072805 | 3835 | { |
11343788 MB |
3836 | if (cUNOPo->op_first->op_type == OP_CONCAT) |
3837 | o->op_flags |= OPf_STACKED; | |
3838 | return o; | |
79072805 LW |
3839 | } |
3840 | ||
3841 | OP * | |
11343788 MB |
3842 | ck_spair(o) |
3843 | OP *o; | |
79072805 | 3844 | { |
11343788 | 3845 | if (o->op_flags & OPf_KIDS) { |
79072805 | 3846 | OP* newop; |
a0d0e21e | 3847 | OP* kid; |
5dc0d613 MB |
3848 | OPCODE type = o->op_type; |
3849 | o = modkids(ck_fun(o), type); | |
11343788 | 3850 | kid = cUNOPo->op_first; |
a0d0e21e LW |
3851 | newop = kUNOP->op_first->op_sibling; |
3852 | if (newop && | |
3853 | (newop->op_sibling || | |
3854 | !(opargs[newop->op_type] & OA_RETSCALAR) || | |
3855 | newop->op_type == OP_PADAV || newop->op_type == OP_PADHV || | |
3856 | newop->op_type == OP_RV2AV || newop->op_type == OP_RV2HV)) { | |
3857 | ||
11343788 | 3858 | return o; |
a0d0e21e LW |
3859 | } |
3860 | op_free(kUNOP->op_first); | |
3861 | kUNOP->op_first = newop; | |
3862 | } | |
11343788 MB |
3863 | o->op_ppaddr = ppaddr[++o->op_type]; |
3864 | return ck_fun(o); | |
a0d0e21e LW |
3865 | } |
3866 | ||
3867 | OP * | |
11343788 MB |
3868 | ck_delete(o) |
3869 | OP *o; | |
a0d0e21e | 3870 | { |
11343788 | 3871 | o = ck_fun(o); |
5dc0d613 | 3872 | o->op_private = 0; |
11343788 MB |
3873 | if (o->op_flags & OPf_KIDS) { |
3874 | OP *kid = cUNOPo->op_first; | |
5f05dabc | 3875 | if (kid->op_type == OP_HSLICE) |
5dc0d613 | 3876 | o->op_private |= OPpSLICE; |
5f05dabc | 3877 | else if (kid->op_type != OP_HELEM) |
3878 | croak("%s argument is not a HASH element or slice", | |
5dc0d613 | 3879 | op_desc[o->op_type]); |
a0d0e21e | 3880 | null(kid); |
79072805 | 3881 | } |
11343788 | 3882 | return o; |
79072805 LW |
3883 | } |
3884 | ||
3885 | OP * | |
11343788 MB |
3886 | ck_eof(o) |
3887 | OP *o; | |
79072805 | 3888 | { |
11343788 | 3889 | I32 type = o->op_type; |
79072805 | 3890 | |
11343788 MB |
3891 | if (o->op_flags & OPf_KIDS) { |
3892 | if (cLISTOPo->op_first->op_type == OP_STUB) { | |
3893 | op_free(o); | |
3894 | o = newUNOP(type, OPf_SPECIAL, | |
85e6fe83 | 3895 | newGVOP(OP_GV, 0, gv_fetchpv("main'ARGV", TRUE, SVt_PVAV))); |
8990e307 | 3896 | } |
11343788 | 3897 | return ck_fun(o); |
79072805 | 3898 | } |
11343788 | 3899 | return o; |
79072805 LW |
3900 | } |
3901 | ||
3902 | OP * | |
11343788 MB |
3903 | ck_eval(o) |
3904 | OP *o; | |
79072805 | 3905 | { |
85e6fe83 | 3906 | hints |= HINT_BLOCK_SCOPE; |
11343788 MB |
3907 | if (o->op_flags & OPf_KIDS) { |
3908 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 | 3909 | |
93a17b20 | 3910 | if (!kid) { |
11343788 MB |
3911 | o->op_flags &= ~OPf_KIDS; |
3912 | null(o); | |
79072805 LW |
3913 | } |
3914 | else if (kid->op_type == OP_LINESEQ) { | |
3915 | LOGOP *enter; | |
3916 | ||
11343788 MB |
3917 | kid->op_next = o->op_next; |
3918 | cUNOPo->op_first = 0; | |
3919 | op_free(o); | |
79072805 LW |
3920 | |
3921 | Newz(1101, enter, 1, LOGOP); | |
3922 | enter->op_type = OP_ENTERTRY; | |
3923 | enter->op_ppaddr = ppaddr[OP_ENTERTRY]; | |
3924 | enter->op_private = 0; | |
3925 | ||
3926 | /* establish postfix order */ | |
3927 | enter->op_next = (OP*)enter; | |
3928 | ||
11343788 MB |
3929 | o = prepend_elem(OP_LINESEQ, (OP*)enter, (OP*)kid); |
3930 | o->op_type = OP_LEAVETRY; | |
3931 | o->op_ppaddr = ppaddr[OP_LEAVETRY]; | |
3932 | enter->op_other = o; | |
3933 | return o; | |
79072805 LW |
3934 | } |
3935 | } | |
3936 | else { | |
11343788 MB |
3937 | op_free(o); |
3938 | o = newUNOP(OP_ENTEREVAL, 0, newSVREF(newGVOP(OP_GV, 0, defgv))); | |
79072805 | 3939 | } |
11343788 MB |
3940 | o->op_targ = (PADOFFSET)hints; |
3941 | return o; | |
79072805 LW |
3942 | } |
3943 | ||
3944 | OP * | |
11343788 MB |
3945 | ck_exec(o) |
3946 | OP *o; | |
79072805 LW |
3947 | { |
3948 | OP *kid; | |
11343788 MB |
3949 | if (o->op_flags & OPf_STACKED) { |
3950 | o = ck_fun(o); | |
3951 | kid = cUNOPo->op_first->op_sibling; | |
8990e307 LW |
3952 | if (kid->op_type == OP_RV2GV) |
3953 | null(kid); | |
79072805 | 3954 | } |
463ee0b2 | 3955 | else |
11343788 MB |
3956 | o = listkids(o); |
3957 | return o; | |
79072805 LW |
3958 | } |
3959 | ||
3960 | OP * | |
5f05dabc | 3961 | ck_exists(op) |
3962 | OP *op; | |
3963 | { | |
3964 | op = ck_fun(op); | |
3965 | if (op->op_flags & OPf_KIDS) { | |
3966 | OP *kid = cUNOP->op_first; | |
3967 | if (kid->op_type != OP_HELEM) | |
3968 | croak("%s argument is not a HASH element", op_desc[op->op_type]); | |
3969 | null(kid); | |
3970 | } | |
3971 | return op; | |
3972 | } | |
3973 | ||
3974 | OP * | |
79072805 LW |
3975 | ck_gvconst(o) |
3976 | register OP *o; | |
3977 | { | |
3978 | o = fold_constants(o); | |
3979 | if (o->op_type == OP_CONST) | |
3980 | o->op_type = OP_GV; | |
3981 | return o; | |
3982 | } | |
3983 | ||
3984 | OP * | |
11343788 MB |
3985 | ck_rvconst(o) |
3986 | register OP *o; | |
79072805 | 3987 | { |
11343788 MB |
3988 | dTHR; |
3989 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
85e6fe83 | 3990 | |
11343788 | 3991 | o->op_private |= (hints & HINT_STRICT_REFS); |
79072805 | 3992 | if (kid->op_type == OP_CONST) { |
44a8e56a | 3993 | char *name; |
3994 | int iscv; | |
3995 | GV *gv; | |
3996 | ||
3997 | name = SvPV(kid->op_sv, na); | |
3998 | if ((hints & HINT_STRICT_REFS) && (kid->op_private & OPpCONST_BARE)) { | |
3999 | char *badthing = Nullch; | |
5dc0d613 | 4000 | switch (o->op_type) { |
44a8e56a | 4001 | case OP_RV2SV: |
4002 | badthing = "a SCALAR"; | |
4003 | break; | |
4004 | case OP_RV2AV: | |
4005 | badthing = "an ARRAY"; | |
4006 | break; | |
4007 | case OP_RV2HV: | |
4008 | badthing = "a HASH"; | |
4009 | break; | |
4010 | } | |
4011 | if (badthing) | |
4012 | croak( | |
4013 | "Can't use bareword (\"%s\") as %s ref while \"strict refs\" in use", | |
4014 | name, badthing); | |
4015 | } | |
79072805 | 4016 | kid->op_type = OP_GV; |
44a8e56a | 4017 | iscv = (op->op_type == OP_RV2CV) * 2; |
a0d0e21e | 4018 | for (gv = 0; !gv; iscv++) { |
748a9306 LW |
4019 | /* |
4020 | * This is a little tricky. We only want to add the symbol if we | |
4021 | * didn't add it in the lexer. Otherwise we get duplicate strict | |
4022 | * warnings. But if we didn't add it in the lexer, we must at | |
4023 | * least pretend like we wanted to add it even if it existed before, | |
4024 | * or we get possible typo warnings. OPpCONST_ENTERED says | |
4025 | * whether the lexer already added THIS instance of this symbol. | |
4026 | */ | |
44a8e56a | 4027 | gv = gv_fetchpv(name, |
748a9306 | 4028 | iscv | !(kid->op_private & OPpCONST_ENTERED), |
a0d0e21e LW |
4029 | iscv |
4030 | ? SVt_PVCV | |
11343788 | 4031 | : o->op_type == OP_RV2SV |
a0d0e21e | 4032 | ? SVt_PV |
11343788 | 4033 | : o->op_type == OP_RV2AV |
a0d0e21e | 4034 | ? SVt_PVAV |
11343788 | 4035 | : o->op_type == OP_RV2HV |
a0d0e21e LW |
4036 | ? SVt_PVHV |
4037 | : SVt_PVGV); | |
4038 | } | |
adbc6bb1 | 4039 | SvREFCNT_dec(kid->op_sv); |
a0d0e21e | 4040 | kid->op_sv = SvREFCNT_inc(gv); |
79072805 | 4041 | } |
11343788 | 4042 | return o; |
79072805 LW |
4043 | } |
4044 | ||
4045 | OP * | |
11343788 MB |
4046 | ck_ftst(o) |
4047 | OP *o; | |
79072805 | 4048 | { |
11343788 MB |
4049 | dTHR; |
4050 | I32 type = o->op_type; | |
79072805 | 4051 | |
11343788 MB |
4052 | if (o->op_flags & OPf_REF) |
4053 | return o; | |
79072805 | 4054 | |
11343788 MB |
4055 | if (o->op_flags & OPf_KIDS) { |
4056 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 LW |
4057 | |
4058 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
a0d0e21e | 4059 | OP *newop = newGVOP(type, OPf_REF, |
85e6fe83 | 4060 | gv_fetchpv(SvPVx(kid->op_sv, na), TRUE, SVt_PVIO)); |
11343788 | 4061 | op_free(o); |
79072805 LW |
4062 | return newop; |
4063 | } | |
4064 | } | |
4065 | else { | |
11343788 | 4066 | op_free(o); |
79072805 | 4067 | if (type == OP_FTTTY) |
a0d0e21e | 4068 | return newGVOP(type, OPf_REF, gv_fetchpv("main'STDIN", TRUE, |
85e6fe83 | 4069 | SVt_PVIO)); |
79072805 LW |
4070 | else |
4071 | return newUNOP(type, 0, newSVREF(newGVOP(OP_GV, 0, defgv))); | |
4072 | } | |
11343788 | 4073 | return o; |
79072805 LW |
4074 | } |
4075 | ||
4076 | OP * | |
11343788 MB |
4077 | ck_fun(o) |
4078 | OP *o; | |
79072805 | 4079 | { |
11343788 | 4080 | dTHR; |
79072805 LW |
4081 | register OP *kid; |
4082 | OP **tokid; | |
4083 | OP *sibl; | |
4084 | I32 numargs = 0; | |
11343788 | 4085 | int type = o->op_type; |
a0d0e21e | 4086 | register I32 oa = opargs[type] >> OASHIFT; |
79072805 | 4087 | |
11343788 | 4088 | if (o->op_flags & OPf_STACKED) { |
79072805 LW |
4089 | if ((oa & OA_OPTIONAL) && (oa >> 4) && !((oa >> 4) & OA_OPTIONAL)) |
4090 | oa &= ~OA_OPTIONAL; | |
4091 | else | |
11343788 | 4092 | return no_fh_allowed(o); |
79072805 LW |
4093 | } |
4094 | ||
11343788 MB |
4095 | if (o->op_flags & OPf_KIDS) { |
4096 | tokid = &cLISTOPo->op_first; | |
4097 | kid = cLISTOPo->op_first; | |
8990e307 LW |
4098 | if (kid->op_type == OP_PUSHMARK || |
4099 | kid->op_type == OP_NULL && kid->op_targ == OP_PUSHMARK) | |
4100 | { | |
79072805 LW |
4101 | tokid = &kid->op_sibling; |
4102 | kid = kid->op_sibling; | |
4103 | } | |
a0d0e21e LW |
4104 | if (!kid && opargs[type] & OA_DEFGV) |
4105 | *tokid = kid = newSVREF(newGVOP(OP_GV, 0, defgv)); | |
79072805 LW |
4106 | |
4107 | while (oa && kid) { | |
4108 | numargs++; | |
4109 | sibl = kid->op_sibling; | |
4110 | switch (oa & 7) { | |
4111 | case OA_SCALAR: | |
4112 | scalar(kid); | |
4113 | break; | |
4114 | case OA_LIST: | |
4115 | if (oa < 16) { | |
4116 | kid = 0; | |
4117 | continue; | |
4118 | } | |
4119 | else | |
4120 | list(kid); | |
4121 | break; | |
4122 | case OA_AVREF: | |
4123 | if (kid->op_type == OP_CONST && | |
4124 | (kid->op_private & OPpCONST_BARE)) { | |
463ee0b2 | 4125 | char *name = SvPVx(((SVOP*)kid)->op_sv, na); |
79072805 | 4126 | OP *newop = newAVREF(newGVOP(OP_GV, 0, |
85e6fe83 | 4127 | gv_fetchpv(name, TRUE, SVt_PVAV) )); |
463ee0b2 | 4128 | if (dowarn) |
ff0cee69 | 4129 | warn("Array @%s missing the @ in argument %ld of %s()", |
4130 | name, (long)numargs, op_desc[type]); | |
79072805 LW |
4131 | op_free(kid); |
4132 | kid = newop; | |
4133 | kid->op_sibling = sibl; | |
4134 | *tokid = kid; | |
4135 | } | |
8990e307 | 4136 | else if (kid->op_type != OP_RV2AV && kid->op_type != OP_PADAV) |
11343788 | 4137 | bad_type(numargs, "array", op_desc[o->op_type], kid); |
a0d0e21e | 4138 | mod(kid, type); |
79072805 LW |
4139 | break; |
4140 | case OA_HVREF: | |
4141 | if (kid->op_type == OP_CONST && | |
4142 | (kid->op_private & OPpCONST_BARE)) { | |
463ee0b2 | 4143 | char *name = SvPVx(((SVOP*)kid)->op_sv, na); |
79072805 | 4144 | OP *newop = newHVREF(newGVOP(OP_GV, 0, |
85e6fe83 | 4145 | gv_fetchpv(name, TRUE, SVt_PVHV) )); |
463ee0b2 | 4146 | if (dowarn) |
ff0cee69 | 4147 | warn("Hash %%%s missing the %% in argument %ld of %s()", |
4148 | name, (long)numargs, op_desc[type]); | |
79072805 LW |
4149 | op_free(kid); |
4150 | kid = newop; | |
4151 | kid->op_sibling = sibl; | |
4152 | *tokid = kid; | |
4153 | } | |
8990e307 | 4154 | else if (kid->op_type != OP_RV2HV && kid->op_type != OP_PADHV) |
11343788 | 4155 | bad_type(numargs, "hash", op_desc[o->op_type], kid); |
a0d0e21e | 4156 | mod(kid, type); |
79072805 LW |
4157 | break; |
4158 | case OA_CVREF: | |
4159 | { | |
a0d0e21e | 4160 | OP *newop = newUNOP(OP_NULL, 0, kid); |
79072805 LW |
4161 | kid->op_sibling = 0; |
4162 | linklist(kid); | |
4163 | newop->op_next = newop; | |
4164 | kid = newop; | |
4165 | kid->op_sibling = sibl; | |
4166 | *tokid = kid; | |
4167 | } | |
4168 | break; | |
4169 | case OA_FILEREF: | |
4170 | if (kid->op_type != OP_GV) { | |
4171 | if (kid->op_type == OP_CONST && | |
4172 | (kid->op_private & OPpCONST_BARE)) { | |
4173 | OP *newop = newGVOP(OP_GV, 0, | |
85e6fe83 LW |
4174 | gv_fetchpv(SvPVx(((SVOP*)kid)->op_sv, na), TRUE, |
4175 | SVt_PVIO) ); | |
79072805 LW |
4176 | op_free(kid); |
4177 | kid = newop; | |
4178 | } | |
4179 | else { | |
4180 | kid->op_sibling = 0; | |
4181 | kid = newUNOP(OP_RV2GV, 0, scalar(kid)); | |
4182 | } | |
4183 | kid->op_sibling = sibl; | |
4184 | *tokid = kid; | |
4185 | } | |
4186 | scalar(kid); | |
4187 | break; | |
4188 | case OA_SCALARREF: | |
a0d0e21e | 4189 | mod(scalar(kid), type); |
79072805 LW |
4190 | break; |
4191 | } | |
4192 | oa >>= 4; | |
4193 | tokid = &kid->op_sibling; | |
4194 | kid = kid->op_sibling; | |
4195 | } | |
11343788 | 4196 | o->op_private |= numargs; |
79072805 | 4197 | if (kid) |
11343788 MB |
4198 | return too_many_arguments(o,op_desc[o->op_type]); |
4199 | listkids(o); | |
79072805 | 4200 | } |
a0d0e21e | 4201 | else if (opargs[type] & OA_DEFGV) { |
11343788 | 4202 | op_free(o); |
a0d0e21e LW |
4203 | return newUNOP(type, 0, newSVREF(newGVOP(OP_GV, 0, defgv))); |
4204 | } | |
4205 | ||
79072805 LW |
4206 | if (oa) { |
4207 | while (oa & OA_OPTIONAL) | |
4208 | oa >>= 4; | |
4209 | if (oa && oa != OA_LIST) | |
11343788 | 4210 | return too_few_arguments(o,op_desc[o->op_type]); |
79072805 | 4211 | } |
11343788 | 4212 | return o; |
79072805 LW |
4213 | } |
4214 | ||
4215 | OP * | |
11343788 MB |
4216 | ck_glob(o) |
4217 | OP *o; | |
79072805 | 4218 | { |
b1cb66bf | 4219 | GV *gv = gv_fetchpv("glob", FALSE, SVt_PVCV); |
4220 | ||
4221 | if (gv && GvIMPORTED_CV(gv)) { | |
46fc3d4c | 4222 | static int glob_index; |
4223 | ||
4224 | append_elem(OP_GLOB, op, | |
4225 | newSVOP(OP_CONST, 0, newSViv(glob_index++))); | |
b1cb66bf | 4226 | op->op_type = OP_LIST; |
4227 | op->op_ppaddr = ppaddr[OP_LIST]; | |
46fc3d4c | 4228 | ((LISTOP*)op)->op_first->op_type = OP_PUSHMARK; |
4229 | ((LISTOP*)op)->op_first->op_ppaddr = ppaddr[OP_PUSHMARK]; | |
b1cb66bf | 4230 | op = newUNOP(OP_ENTERSUB, OPf_STACKED, |
4231 | append_elem(OP_LIST, op, | |
4232 | scalar(newUNOP(OP_RV2CV, 0, | |
4233 | newGVOP(OP_GV, 0, gv))))); | |
4234 | return ck_subr(op); | |
4235 | } | |
0a753a76 | 4236 | if ((op->op_flags & OPf_KIDS) && !cLISTOP->op_first->op_sibling) |
4237 | append_elem(OP_GLOB, op, newSVREF(newGVOP(OP_GV, 0, defgv))); | |
b1cb66bf | 4238 | gv = newGVgen("main"); |
a0d0e21e | 4239 | gv_IOadd(gv); |
11343788 MB |
4240 | append_elem(OP_GLOB, o, newGVOP(OP_GV, 0, gv)); |
4241 | scalarkids(o); | |
4242 | return ck_fun(o); | |
79072805 LW |
4243 | } |
4244 | ||
4245 | OP * | |
11343788 MB |
4246 | ck_grep(o) |
4247 | OP *o; | |
79072805 LW |
4248 | { |
4249 | LOGOP *gwop; | |
4250 | OP *kid; | |
11343788 | 4251 | OPCODE type = o->op_type == OP_GREPSTART ? OP_GREPWHILE : OP_MAPWHILE; |
79072805 | 4252 | |
11343788 | 4253 | o->op_ppaddr = ppaddr[OP_GREPSTART]; |
a0d0e21e LW |
4254 | Newz(1101, gwop, 1, LOGOP); |
4255 | ||
11343788 | 4256 | if (o->op_flags & OPf_STACKED) { |
a0d0e21e | 4257 | OP* k; |
11343788 MB |
4258 | o = ck_sort(o); |
4259 | kid = cLISTOPo->op_first->op_sibling; | |
4260 | for (k = cLISTOPo->op_first->op_sibling->op_next; k; k = k->op_next) { | |
a0d0e21e LW |
4261 | kid = k; |
4262 | } | |
4263 | kid->op_next = (OP*)gwop; | |
11343788 | 4264 | o->op_flags &= ~OPf_STACKED; |
93a17b20 | 4265 | } |
11343788 | 4266 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e LW |
4267 | if (type == OP_MAPWHILE) |
4268 | list(kid); | |
4269 | else | |
4270 | scalar(kid); | |
11343788 | 4271 | o = ck_fun(o); |
79072805 | 4272 | if (error_count) |
11343788 MB |
4273 | return o; |
4274 | kid = cLISTOPo->op_first->op_sibling; | |
79072805 | 4275 | if (kid->op_type != OP_NULL) |
463ee0b2 | 4276 | croak("panic: ck_grep"); |
79072805 LW |
4277 | kid = kUNOP->op_first; |
4278 | ||
a0d0e21e LW |
4279 | gwop->op_type = type; |
4280 | gwop->op_ppaddr = ppaddr[type]; | |
11343788 | 4281 | gwop->op_first = listkids(o); |
79072805 LW |
4282 | gwop->op_flags |= OPf_KIDS; |
4283 | gwop->op_private = 1; | |
4284 | gwop->op_other = LINKLIST(kid); | |
a0d0e21e | 4285 | gwop->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 LW |
4286 | kid->op_next = (OP*)gwop; |
4287 | ||
11343788 | 4288 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e | 4289 | if (!kid || !kid->op_sibling) |
11343788 | 4290 | return too_few_arguments(o,op_desc[o->op_type]); |
a0d0e21e LW |
4291 | for (kid = kid->op_sibling; kid; kid = kid->op_sibling) |
4292 | mod(kid, OP_GREPSTART); | |
4293 | ||
79072805 LW |
4294 | return (OP*)gwop; |
4295 | } | |
4296 | ||
4297 | OP * | |
11343788 MB |
4298 | ck_index(o) |
4299 | OP *o; | |
79072805 | 4300 | { |
11343788 MB |
4301 | if (o->op_flags & OPf_KIDS) { |
4302 | OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
79072805 | 4303 | if (kid && kid->op_type == OP_CONST) |
bbce6d69 | 4304 | fbm_compile(((SVOP*)kid)->op_sv); |
79072805 | 4305 | } |
11343788 | 4306 | return ck_fun(o); |
79072805 LW |
4307 | } |
4308 | ||
4309 | OP * | |
11343788 MB |
4310 | ck_lengthconst(o) |
4311 | OP *o; | |
79072805 LW |
4312 | { |
4313 | /* XXX length optimization goes here */ | |
11343788 | 4314 | return ck_fun(o); |
79072805 LW |
4315 | } |
4316 | ||
4317 | OP * | |
11343788 MB |
4318 | ck_lfun(o) |
4319 | OP *o; | |
79072805 | 4320 | { |
5dc0d613 MB |
4321 | OPCODE type = o->op_type; |
4322 | return modkids(ck_fun(o), type); | |
79072805 LW |
4323 | } |
4324 | ||
4325 | OP * | |
11343788 MB |
4326 | ck_rfun(o) |
4327 | OP *o; | |
8990e307 | 4328 | { |
5dc0d613 MB |
4329 | OPCODE type = o->op_type; |
4330 | return refkids(ck_fun(o), type); | |
8990e307 LW |
4331 | } |
4332 | ||
4333 | OP * | |
11343788 MB |
4334 | ck_listiob(o) |
4335 | OP *o; | |
79072805 LW |
4336 | { |
4337 | register OP *kid; | |
4338 | ||
11343788 | 4339 | kid = cLISTOPo->op_first; |
79072805 | 4340 | if (!kid) { |
11343788 MB |
4341 | o = force_list(o); |
4342 | kid = cLISTOPo->op_first; | |
79072805 LW |
4343 | } |
4344 | if (kid->op_type == OP_PUSHMARK) | |
4345 | kid = kid->op_sibling; | |
11343788 | 4346 | if (kid && o->op_flags & OPf_STACKED) |
79072805 LW |
4347 | kid = kid->op_sibling; |
4348 | else if (kid && !kid->op_sibling) { /* print HANDLE; */ | |
4349 | if (kid->op_type == OP_CONST && kid->op_private & OPpCONST_BARE) { | |
11343788 | 4350 | o->op_flags |= OPf_STACKED; /* make it a filehandle */ |
748a9306 | 4351 | kid = newUNOP(OP_RV2GV, OPf_REF, scalar(kid)); |
11343788 MB |
4352 | cLISTOPo->op_first->op_sibling = kid; |
4353 | cLISTOPo->op_last = kid; | |
79072805 LW |
4354 | kid = kid->op_sibling; |
4355 | } | |
4356 | } | |
4357 | ||
4358 | if (!kid) | |
11343788 | 4359 | append_elem(o->op_type, o, newSVREF(newGVOP(OP_GV, 0, defgv)) ); |
79072805 | 4360 | |
5dc0d613 | 4361 | o = listkids(o); |
bbce6d69 | 4362 | |
5dc0d613 | 4363 | o->op_private = 0; |
36477c24 | 4364 | #ifdef USE_LOCALE |
bbce6d69 | 4365 | if (hints & HINT_LOCALE) |
5dc0d613 | 4366 | o->op_private |= OPpLOCALE; |
bbce6d69 | 4367 | #endif |
4368 | ||
5dc0d613 | 4369 | return o; |
bbce6d69 | 4370 | } |
4371 | ||
4372 | OP * | |
5dc0d613 MB |
4373 | ck_fun_locale(o) |
4374 | OP *o; | |
bbce6d69 | 4375 | { |
5dc0d613 | 4376 | o = ck_fun(o); |
bbce6d69 | 4377 | |
5dc0d613 | 4378 | o->op_private = 0; |
36477c24 | 4379 | #ifdef USE_LOCALE |
bbce6d69 | 4380 | if (hints & HINT_LOCALE) |
5dc0d613 | 4381 | o->op_private |= OPpLOCALE; |
bbce6d69 | 4382 | #endif |
4383 | ||
5dc0d613 | 4384 | return o; |
bbce6d69 | 4385 | } |
4386 | ||
4387 | OP * | |
5dc0d613 MB |
4388 | ck_scmp(o) |
4389 | OP *o; | |
bbce6d69 | 4390 | { |
5dc0d613 | 4391 | o->op_private = 0; |
36477c24 | 4392 | #ifdef USE_LOCALE |
bbce6d69 | 4393 | if (hints & HINT_LOCALE) |
5dc0d613 | 4394 | o->op_private |= OPpLOCALE; |
bbce6d69 | 4395 | #endif |
36477c24 | 4396 | |
5dc0d613 | 4397 | return o; |
79072805 LW |
4398 | } |
4399 | ||
4400 | OP * | |
11343788 MB |
4401 | ck_match(o) |
4402 | OP *o; | |
79072805 | 4403 | { |
5dc0d613 | 4404 | o->op_private |= OPpRUNTIME; |
11343788 | 4405 | return o; |
79072805 LW |
4406 | } |
4407 | ||
4408 | OP * | |
11343788 MB |
4409 | ck_null(o) |
4410 | OP *o; | |
79072805 | 4411 | { |
11343788 | 4412 | return o; |
79072805 LW |
4413 | } |
4414 | ||
4415 | OP * | |
11343788 MB |
4416 | ck_repeat(o) |
4417 | OP *o; | |
79072805 | 4418 | { |
11343788 MB |
4419 | if (cBINOPo->op_first->op_flags & OPf_PARENS) { |
4420 | o->op_private |= OPpREPEAT_DOLIST; | |
4421 | cBINOPo->op_first = force_list(cBINOPo->op_first); | |
79072805 LW |
4422 | } |
4423 | else | |
11343788 MB |
4424 | scalar(o); |
4425 | return o; | |
79072805 LW |
4426 | } |
4427 | ||
4428 | OP * | |
11343788 MB |
4429 | ck_require(o) |
4430 | OP *o; | |
8990e307 | 4431 | { |
11343788 MB |
4432 | if (o->op_flags & OPf_KIDS) { /* Shall we supply missing .pm? */ |
4433 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
8990e307 LW |
4434 | |
4435 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
8990e307 | 4436 | char *s; |
a0d0e21e LW |
4437 | for (s = SvPVX(kid->op_sv); *s; s++) { |
4438 | if (*s == ':' && s[1] == ':') { | |
4439 | *s = '/'; | |
1aef975c | 4440 | Move(s+2, s+1, strlen(s+2)+1, char); |
a0d0e21e LW |
4441 | --SvCUR(kid->op_sv); |
4442 | } | |
8990e307 | 4443 | } |
a0d0e21e | 4444 | sv_catpvn(kid->op_sv, ".pm", 3); |
8990e307 LW |
4445 | } |
4446 | } | |
11343788 | 4447 | return ck_fun(o); |
8990e307 LW |
4448 | } |
4449 | ||
4450 | OP * | |
11343788 MB |
4451 | ck_retarget(o) |
4452 | OP *o; | |
79072805 | 4453 | { |
463ee0b2 | 4454 | croak("NOT IMPL LINE %d",__LINE__); |
79072805 | 4455 | /* STUB */ |
11343788 | 4456 | return o; |
79072805 LW |
4457 | } |
4458 | ||
4459 | OP * | |
11343788 MB |
4460 | ck_select(o) |
4461 | OP *o; | |
79072805 | 4462 | { |
c07a80fd | 4463 | OP* kid; |
11343788 MB |
4464 | if (o->op_flags & OPf_KIDS) { |
4465 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
2304df62 | 4466 | if (kid && kid->op_sibling) { |
11343788 MB |
4467 | o->op_type = OP_SSELECT; |
4468 | o->op_ppaddr = ppaddr[OP_SSELECT]; | |
4469 | o = ck_fun(o); | |
4470 | return fold_constants(o); | |
79072805 LW |
4471 | } |
4472 | } | |
11343788 MB |
4473 | o = ck_fun(o); |
4474 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
c07a80fd | 4475 | if (kid && kid->op_type == OP_RV2GV) |
4476 | kid->op_private &= ~HINT_STRICT_REFS; | |
11343788 | 4477 | return o; |
79072805 LW |
4478 | } |
4479 | ||
4480 | OP * | |
11343788 MB |
4481 | ck_shift(o) |
4482 | OP *o; | |
79072805 | 4483 | { |
11343788 | 4484 | I32 type = o->op_type; |
79072805 | 4485 | |
11343788 MB |
4486 | if (!(o->op_flags & OPf_KIDS)) { |
4487 | op_free(o); | |
79072805 LW |
4488 | return newUNOP(type, 0, |
4489 | scalar(newUNOP(OP_RV2AV, 0, | |
b1cb66bf | 4490 | scalar(newGVOP(OP_GV, 0, subline |
4491 | ? defgv | |
4492 | : gv_fetchpv("ARGV", TRUE, SVt_PVAV) ))))); | |
79072805 | 4493 | } |
11343788 | 4494 | return scalar(modkids(ck_fun(o), type)); |
79072805 LW |
4495 | } |
4496 | ||
4497 | OP * | |
11343788 MB |
4498 | ck_sort(o) |
4499 | OP *o; | |
79072805 | 4500 | { |
5dc0d613 | 4501 | o->op_private = 0; |
36477c24 | 4502 | #ifdef USE_LOCALE |
bbce6d69 | 4503 | if (hints & HINT_LOCALE) |
5dc0d613 | 4504 | o->op_private |= OPpLOCALE; |
bbce6d69 | 4505 | #endif |
4506 | ||
11343788 MB |
4507 | if (o->op_flags & OPf_STACKED) { |
4508 | OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
463ee0b2 LW |
4509 | OP *k; |
4510 | kid = kUNOP->op_first; /* get past rv2gv */ | |
79072805 | 4511 | |
463ee0b2 | 4512 | if (kid->op_type == OP_SCOPE || kid->op_type == OP_LEAVE) { |
79072805 | 4513 | linklist(kid); |
463ee0b2 LW |
4514 | if (kid->op_type == OP_SCOPE) { |
4515 | k = kid->op_next; | |
4516 | kid->op_next = 0; | |
79072805 | 4517 | } |
463ee0b2 | 4518 | else if (kid->op_type == OP_LEAVE) { |
11343788 | 4519 | if (o->op_type == OP_SORT) { |
748a9306 LW |
4520 | null(kid); /* wipe out leave */ |
4521 | kid->op_next = kid; | |
463ee0b2 | 4522 | |
748a9306 LW |
4523 | for (k = kLISTOP->op_first->op_next; k; k = k->op_next) { |
4524 | if (k->op_next == kid) | |
4525 | k->op_next = 0; | |
4526 | } | |
463ee0b2 | 4527 | } |
748a9306 LW |
4528 | else |
4529 | kid->op_next = 0; /* just disconnect the leave */ | |
a0d0e21e | 4530 | k = kLISTOP->op_first; |
463ee0b2 | 4531 | } |
a0d0e21e LW |
4532 | peep(k); |
4533 | ||
11343788 | 4534 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
8990e307 | 4535 | null(kid); /* wipe out rv2gv */ |
11343788 | 4536 | if (o->op_type == OP_SORT) |
a0d0e21e LW |
4537 | kid->op_next = kid; |
4538 | else | |
4539 | kid->op_next = k; | |
11343788 | 4540 | o->op_flags |= OPf_SPECIAL; |
79072805 LW |
4541 | } |
4542 | } | |
bbce6d69 | 4543 | |
11343788 | 4544 | return o; |
79072805 LW |
4545 | } |
4546 | ||
4547 | OP * | |
11343788 MB |
4548 | ck_split(o) |
4549 | OP *o; | |
79072805 LW |
4550 | { |
4551 | register OP *kid; | |
ed6116ce | 4552 | PMOP* pm; |
79072805 | 4553 | |
11343788 MB |
4554 | if (o->op_flags & OPf_STACKED) |
4555 | return no_fh_allowed(o); | |
79072805 | 4556 | |
11343788 | 4557 | kid = cLISTOPo->op_first; |
8990e307 | 4558 | if (kid->op_type != OP_NULL) |
463ee0b2 | 4559 | croak("panic: ck_split"); |
8990e307 | 4560 | kid = kid->op_sibling; |
11343788 MB |
4561 | op_free(cLISTOPo->op_first); |
4562 | cLISTOPo->op_first = kid; | |
85e6fe83 | 4563 | if (!kid) { |
11343788 MB |
4564 | cLISTOPo->op_first = kid = newSVOP(OP_CONST, 0, newSVpv(" ", 1)); |
4565 | cLISTOPo->op_last = kid; /* There was only one element previously */ | |
85e6fe83 | 4566 | } |
79072805 LW |
4567 | |
4568 | if (kid->op_type != OP_MATCH) { | |
4569 | OP *sibl = kid->op_sibling; | |
463ee0b2 | 4570 | kid->op_sibling = 0; |
79072805 | 4571 | kid = pmruntime( newPMOP(OP_MATCH, OPf_SPECIAL), kid, Nullop); |
11343788 MB |
4572 | if (cLISTOPo->op_first == cLISTOPo->op_last) |
4573 | cLISTOPo->op_last = kid; | |
4574 | cLISTOPo->op_first = kid; | |
79072805 LW |
4575 | kid->op_sibling = sibl; |
4576 | } | |
ed6116ce LW |
4577 | pm = (PMOP*)kid; |
4578 | if (pm->op_pmshort && !(pm->op_pmflags & PMf_ALL)) { | |
8990e307 | 4579 | SvREFCNT_dec(pm->op_pmshort); /* can't use substring to optimize */ |
ed6116ce LW |
4580 | pm->op_pmshort = 0; |
4581 | } | |
79072805 LW |
4582 | |
4583 | kid->op_type = OP_PUSHRE; | |
4584 | kid->op_ppaddr = ppaddr[OP_PUSHRE]; | |
4585 | scalar(kid); | |
4586 | ||
4587 | if (!kid->op_sibling) | |
11343788 | 4588 | append_elem(OP_SPLIT, o, newSVREF(newGVOP(OP_GV, 0, defgv)) ); |
79072805 LW |
4589 | |
4590 | kid = kid->op_sibling; | |
4591 | scalar(kid); | |
4592 | ||
4593 | if (!kid->op_sibling) | |
11343788 | 4594 | append_elem(OP_SPLIT, o, newSVOP(OP_CONST, 0, newSViv(0))); |
79072805 LW |
4595 | |
4596 | kid = kid->op_sibling; | |
4597 | scalar(kid); | |
4598 | ||
4599 | if (kid->op_sibling) | |
11343788 | 4600 | return too_many_arguments(o,op_desc[o->op_type]); |
79072805 | 4601 | |
11343788 | 4602 | return o; |
79072805 LW |
4603 | } |
4604 | ||
4605 | OP * | |
11343788 MB |
4606 | ck_subr(o) |
4607 | OP *o; | |
79072805 | 4608 | { |
11343788 MB |
4609 | dTHR; |
4610 | OP *prev = ((cUNOPo->op_first->op_sibling) | |
4611 | ? cUNOPo : ((UNOP*)cUNOPo->op_first))->op_first; | |
4612 | OP *o2 = prev->op_sibling; | |
4633a7c4 LW |
4613 | OP *cvop; |
4614 | char *proto = 0; | |
4615 | CV *cv = 0; | |
46fc3d4c | 4616 | GV *namegv = 0; |
4633a7c4 LW |
4617 | int optional = 0; |
4618 | I32 arg = 0; | |
4619 | ||
11343788 | 4620 | for (cvop = o2; cvop->op_sibling; cvop = cvop->op_sibling) ; |
4633a7c4 LW |
4621 | if (cvop->op_type == OP_RV2CV) { |
4622 | SVOP* tmpop; | |
11343788 | 4623 | o->op_private |= (cvop->op_private & OPpENTERSUB_AMPER); |
4633a7c4 LW |
4624 | null(cvop); /* disable rv2cv */ |
4625 | tmpop = (SVOP*)((UNOP*)cvop)->op_first; | |
4626 | if (tmpop->op_type == OP_GV) { | |
8ebc5c01 | 4627 | cv = GvCVu(tmpop->op_sv); |
5dc0d613 | 4628 | if (cv && SvPOK(cv) && !(o->op_private & OPpENTERSUB_AMPER)) { |
46fc3d4c | 4629 | namegv = CvANON(cv) ? (GV*)tmpop->op_sv : CvGV(cv); |
4630 | proto = SvPV((SV*)cv, na); | |
4631 | } | |
4633a7c4 LW |
4632 | } |
4633 | } | |
11343788 | 4634 | o->op_private |= (hints & HINT_STRICT_REFS); |
8990e307 | 4635 | if (perldb && curstash != debstash) |
11343788 MB |
4636 | o->op_private |= OPpENTERSUB_DB; |
4637 | while (o2 != cvop) { | |
4633a7c4 LW |
4638 | if (proto) { |
4639 | switch (*proto) { | |
4640 | case '\0': | |
5dc0d613 | 4641 | return too_many_arguments(o, gv_ename(namegv)); |
4633a7c4 LW |
4642 | case ';': |
4643 | optional = 1; | |
4644 | proto++; | |
4645 | continue; | |
4646 | case '$': | |
4647 | proto++; | |
4648 | arg++; | |
11343788 | 4649 | scalar(o2); |
4633a7c4 LW |
4650 | break; |
4651 | case '%': | |
4652 | case '@': | |
11343788 | 4653 | list(o2); |
4633a7c4 LW |
4654 | arg++; |
4655 | break; | |
4656 | case '&': | |
4657 | proto++; | |
4658 | arg++; | |
11343788 | 4659 | if (o2->op_type != OP_REFGEN && o2->op_type != OP_UNDEF) |
5dc0d613 | 4660 | bad_type(arg, "block", gv_ename(namegv), o2); |
4633a7c4 LW |
4661 | break; |
4662 | case '*': | |
4663 | proto++; | |
4664 | arg++; | |
11343788 | 4665 | if (o2->op_type == OP_RV2GV) |
4633a7c4 LW |
4666 | goto wrapref; |
4667 | { | |
11343788 MB |
4668 | OP* kid = o2; |
4669 | o2 = newUNOP(OP_RV2GV, 0, kid); | |
4670 | o2->op_sibling = kid->op_sibling; | |
4633a7c4 LW |
4671 | kid->op_sibling = 0; |
4672 | prev->op_sibling = o; | |
4673 | } | |
4674 | goto wrapref; | |
4675 | case '\\': | |
4676 | proto++; | |
4677 | arg++; | |
4678 | switch (*proto++) { | |
4679 | case '*': | |
11343788 | 4680 | if (o2->op_type != OP_RV2GV) |
5dc0d613 | 4681 | bad_type(arg, "symbol", gv_ename(namegv), o2); |
4633a7c4 LW |
4682 | goto wrapref; |
4683 | case '&': | |
11343788 | 4684 | if (o2->op_type != OP_RV2CV) |
5dc0d613 | 4685 | bad_type(arg, "sub", gv_ename(namegv), o2); |
4633a7c4 LW |
4686 | goto wrapref; |
4687 | case '$': | |
11343788 | 4688 | if (o2->op_type != OP_RV2SV && o2->op_type != OP_PADSV) |
5dc0d613 | 4689 | bad_type(arg, "scalar", gv_ename(namegv), o2); |
4633a7c4 LW |
4690 | goto wrapref; |
4691 | case '@': | |
11343788 | 4692 | if (o2->op_type != OP_RV2AV && o2->op_type != OP_PADAV) |
5dc0d613 | 4693 | bad_type(arg, "array", gv_ename(namegv), o2); |
4633a7c4 LW |
4694 | goto wrapref; |
4695 | case '%': | |
11343788 | 4696 | if (o2->op_type != OP_RV2HV && o2->op_type != OP_PADHV) |
5dc0d613 | 4697 | bad_type(arg, "hash", gv_ename(namegv), o2); |
4633a7c4 LW |
4698 | wrapref: |
4699 | { | |
11343788 MB |
4700 | OP* kid = o2; |
4701 | o2 = newUNOP(OP_REFGEN, 0, kid); | |
4702 | o2->op_sibling = kid->op_sibling; | |
4633a7c4 LW |
4703 | kid->op_sibling = 0; |
4704 | prev->op_sibling = o; | |
4705 | } | |
4706 | break; | |
4707 | default: goto oops; | |
4708 | } | |
4709 | break; | |
b1cb66bf | 4710 | case ' ': |
4711 | proto++; | |
4712 | continue; | |
4633a7c4 LW |
4713 | default: |
4714 | oops: | |
4715 | croak("Malformed prototype for %s: %s", | |
46fc3d4c | 4716 | gv_ename(namegv), SvPV((SV*)cv, na)); |
4633a7c4 LW |
4717 | } |
4718 | } | |
4719 | else | |
11343788 MB |
4720 | list(o2); |
4721 | mod(o2, OP_ENTERSUB); | |
4722 | prev = o2; | |
4723 | o2 = o2->op_sibling; | |
4633a7c4 LW |
4724 | } |
4725 | if (proto && !optional && *proto == '$') | |
5dc0d613 | 4726 | return too_few_arguments(o, gv_ename(namegv)); |
11343788 | 4727 | return o; |
79072805 LW |
4728 | } |
4729 | ||
4730 | OP * | |
11343788 MB |
4731 | ck_svconst(o) |
4732 | OP *o; | |
8990e307 | 4733 | { |
11343788 MB |
4734 | SvREADONLY_on(cSVOPo->op_sv); |
4735 | return o; | |
8990e307 LW |
4736 | } |
4737 | ||
4738 | OP * | |
11343788 MB |
4739 | ck_trunc(o) |
4740 | OP *o; | |
79072805 | 4741 | { |
11343788 MB |
4742 | if (o->op_flags & OPf_KIDS) { |
4743 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 | 4744 | |
a0d0e21e LW |
4745 | if (kid->op_type == OP_NULL) |
4746 | kid = (SVOP*)kid->op_sibling; | |
4747 | if (kid && | |
4748 | kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) | |
11343788 | 4749 | o->op_flags |= OPf_SPECIAL; |
79072805 | 4750 | } |
11343788 | 4751 | return ck_fun(o); |
79072805 LW |
4752 | } |
4753 | ||
463ee0b2 LW |
4754 | /* A peephole optimizer. We visit the ops in the order they're to execute. */ |
4755 | ||
79072805 | 4756 | void |
a0d0e21e LW |
4757 | peep(o) |
4758 | register OP* o; | |
79072805 | 4759 | { |
11343788 | 4760 | dTHR; |
79072805 | 4761 | register OP* oldop = 0; |
a0d0e21e | 4762 | if (!o || o->op_seq) |
79072805 | 4763 | return; |
a0d0e21e LW |
4764 | ENTER; |
4765 | SAVESPTR(op); | |
4766 | SAVESPTR(curcop); | |
4767 | for (; o; o = o->op_next) { | |
4768 | if (o->op_seq) | |
4769 | break; | |
c07a80fd | 4770 | if (!op_seqmax) |
4771 | op_seqmax++; | |
a0d0e21e LW |
4772 | op = o; |
4773 | switch (o->op_type) { | |
4774 | case OP_NEXTSTATE: | |
4775 | case OP_DBSTATE: | |
4776 | curcop = ((COP*)o); /* for warnings */ | |
c07a80fd | 4777 | o->op_seq = op_seqmax++; |
a0d0e21e LW |
4778 | break; |
4779 | ||
4780 | case OP_CONCAT: | |
4781 | case OP_CONST: | |
4782 | case OP_JOIN: | |
4783 | case OP_UC: | |
4784 | case OP_UCFIRST: | |
4785 | case OP_LC: | |
4786 | case OP_LCFIRST: | |
4787 | case OP_QUOTEMETA: | |
4788 | if (o->op_next->op_type == OP_STRINGIFY) | |
4789 | null(o->op_next); | |
c07a80fd | 4790 | o->op_seq = op_seqmax++; |
a0d0e21e | 4791 | break; |
8990e307 | 4792 | case OP_STUB: |
54310121 | 4793 | if ((o->op_flags & OPf_WANT) != OPf_WANT_LIST) { |
c07a80fd | 4794 | o->op_seq = op_seqmax++; |
54310121 | 4795 | break; /* Scalar stub must produce undef. List stub is noop */ |
8990e307 | 4796 | } |
748a9306 | 4797 | goto nothin; |
79072805 | 4798 | case OP_NULL: |
748a9306 LW |
4799 | if (o->op_targ == OP_NEXTSTATE || o->op_targ == OP_DBSTATE) |
4800 | curcop = ((COP*)op); | |
4801 | goto nothin; | |
79072805 | 4802 | case OP_SCALAR: |
93a17b20 | 4803 | case OP_LINESEQ: |
463ee0b2 | 4804 | case OP_SCOPE: |
748a9306 | 4805 | nothin: |
a0d0e21e LW |
4806 | if (oldop && o->op_next) { |
4807 | oldop->op_next = o->op_next; | |
79072805 LW |
4808 | continue; |
4809 | } | |
c07a80fd | 4810 | o->op_seq = op_seqmax++; |
79072805 LW |
4811 | break; |
4812 | ||
4813 | case OP_GV: | |
a0d0e21e | 4814 | if (o->op_next->op_type == OP_RV2SV) { |
5f05dabc | 4815 | if (!(o->op_next->op_private & OPpDEREF)) { |
a0d0e21e LW |
4816 | null(o->op_next); |
4817 | o->op_private |= o->op_next->op_private & OPpLVAL_INTRO; | |
4818 | o->op_next = o->op_next->op_next; | |
4819 | o->op_type = OP_GVSV; | |
4820 | o->op_ppaddr = ppaddr[OP_GVSV]; | |
8990e307 LW |
4821 | } |
4822 | } | |
a0d0e21e LW |
4823 | else if (o->op_next->op_type == OP_RV2AV) { |
4824 | OP* pop = o->op_next->op_next; | |
4825 | IV i; | |
8990e307 | 4826 | if (pop->op_type == OP_CONST && |
a0d0e21e | 4827 | (op = pop->op_next) && |
8990e307 | 4828 | pop->op_next->op_type == OP_AELEM && |
a0d0e21e | 4829 | !(pop->op_next->op_private & |
68dc0745 | 4830 | (OPpLVAL_INTRO|OPpLVAL_DEFER|OPpDEREF)) && |
a0d0e21e LW |
4831 | (i = SvIV(((SVOP*)pop)->op_sv) - compiling.cop_arybase) |
4832 | <= 255 && | |
8990e307 LW |
4833 | i >= 0) |
4834 | { | |
748a9306 | 4835 | SvREFCNT_dec(((SVOP*)pop)->op_sv); |
a0d0e21e | 4836 | null(o->op_next); |
8990e307 LW |
4837 | null(pop->op_next); |
4838 | null(pop); | |
a0d0e21e LW |
4839 | o->op_flags |= pop->op_next->op_flags & OPf_MOD; |
4840 | o->op_next = pop->op_next->op_next; | |
4841 | o->op_type = OP_AELEMFAST; | |
4842 | o->op_ppaddr = ppaddr[OP_AELEMFAST]; | |
4843 | o->op_private = (U8)i; | |
a6006777 | 4844 | GvAVn(((GVOP*)o)->op_gv); |
8990e307 | 4845 | } |
79072805 | 4846 | } |
c07a80fd | 4847 | o->op_seq = op_seqmax++; |
79072805 LW |
4848 | break; |
4849 | ||
a0d0e21e | 4850 | case OP_MAPWHILE: |
79072805 LW |
4851 | case OP_GREPWHILE: |
4852 | case OP_AND: | |
4853 | case OP_OR: | |
c07a80fd | 4854 | o->op_seq = op_seqmax++; |
79072805 LW |
4855 | peep(cLOGOP->op_other); |
4856 | break; | |
4857 | ||
4858 | case OP_COND_EXPR: | |
c07a80fd | 4859 | o->op_seq = op_seqmax++; |
79072805 LW |
4860 | peep(cCONDOP->op_true); |
4861 | peep(cCONDOP->op_false); | |
4862 | break; | |
4863 | ||
4864 | case OP_ENTERLOOP: | |
c07a80fd | 4865 | o->op_seq = op_seqmax++; |
79072805 LW |
4866 | peep(cLOOP->op_redoop); |
4867 | peep(cLOOP->op_nextop); | |
4868 | peep(cLOOP->op_lastop); | |
4869 | break; | |
4870 | ||
4871 | case OP_MATCH: | |
4872 | case OP_SUBST: | |
c07a80fd | 4873 | o->op_seq = op_seqmax++; |
a0d0e21e | 4874 | peep(cPMOP->op_pmreplstart); |
79072805 LW |
4875 | break; |
4876 | ||
a0d0e21e | 4877 | case OP_EXEC: |
c07a80fd | 4878 | o->op_seq = op_seqmax++; |
a0d0e21e LW |
4879 | if (dowarn && o->op_next && o->op_next->op_type == OP_NEXTSTATE) { |
4880 | if (o->op_next->op_sibling && | |
4881 | o->op_next->op_sibling->op_type != OP_DIE) { | |
4882 | line_t oldline = curcop->cop_line; | |
4883 | ||
4884 | curcop->cop_line = ((COP*)o->op_next)->cop_line; | |
4885 | warn("Statement unlikely to be reached"); | |
4886 | warn("(Maybe you meant system() when you said exec()?)\n"); | |
4887 | curcop->cop_line = oldline; | |
4888 | } | |
4889 | } | |
4890 | break; | |
c750a3ec MB |
4891 | |
4892 | case OP_HELEM: { | |
4893 | UNOP *rop; | |
4894 | SV *lexname; | |
4895 | GV **fields; | |
4896 | SV **svp, **indsvp; | |
4897 | I32 ind; | |
4898 | char *key; | |
4899 | STRLEN keylen; | |
4900 | ||
4901 | if (o->op_private & (OPpDEREF_HV|OPpDEREF_AV|OPpLVAL_INTRO) | |
4902 | || ((BINOP*)o)->op_last->op_type != OP_CONST) | |
4903 | break; | |
4904 | rop = (UNOP*)((BINOP*)o)->op_first; | |
4905 | if (rop->op_type != OP_RV2HV || rop->op_first->op_type != OP_PADSV) | |
4906 | break; | |
4907 | lexname = *av_fetch(comppad_name, rop->op_first->op_targ, TRUE); | |
4908 | if (!SvOBJECT(lexname)) | |
4909 | break; | |
4910 | fields = hv_fetch(SvSTASH(lexname), "FIELDS", 6, FALSE); | |
4911 | if (!fields || !GvHV(*fields)) | |
4912 | break; | |
4913 | svp = &((SVOP*)((BINOP*)o)->op_last)->op_sv; | |
4914 | key = SvPV(*svp, keylen); | |
4915 | indsvp = hv_fetch(GvHV(*fields), key, keylen, FALSE); | |
4916 | if (!indsvp) { | |
4917 | croak("No such field \"%s\" in variable %s of type %s", | |
4918 | key, SvPV(lexname, na), HvNAME(SvSTASH(lexname))); | |
4919 | } | |
4920 | ind = SvIV(*indsvp); | |
4921 | if (ind < 1) | |
4922 | croak("Bad index while coercing array into hash"); | |
4923 | rop->op_type = OP_RV2AV; | |
4924 | rop->op_ppaddr = ppaddr[OP_RV2AV]; | |
4925 | o->op_type = OP_AELEM; | |
4926 | o->op_ppaddr = ppaddr[OP_AELEM]; | |
4927 | SvREFCNT_dec(*svp); | |
4928 | *svp = newSViv(ind); | |
4929 | break; | |
4930 | } | |
4931 | ||
79072805 | 4932 | default: |
c07a80fd | 4933 | o->op_seq = op_seqmax++; |
79072805 LW |
4934 | break; |
4935 | } | |
a0d0e21e | 4936 | oldop = o; |
79072805 | 4937 | } |
a0d0e21e | 4938 | LEAVE; |
79072805 | 4939 | } |