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)); |
3bc5dc61 | 33 | static void 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", |
5196be3e | 58 | op_desc[o->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 | ||
3bc5dc61 | 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: |
5196be3e | 540 | if (!(o->op_flags & OPf_REF) || (check[o->op_type] != ck_ftst)) |
a6006777 | 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: | |
5196be3e | 550 | Safefree(cCOPo->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) { |
0f15f207 | 640 | dTHR; |
a0d0e21e LW |
641 | line_t oldline = curcop->cop_line; |
642 | ||
643 | if (copline != NOLINE) | |
644 | curcop->cop_line = copline; | |
645 | warn("Found = in conditional, should be =="); | |
646 | curcop->cop_line = oldline; | |
647 | } | |
11343788 | 648 | return scalar(o); |
8990e307 LW |
649 | } |
650 | ||
651 | OP * | |
11343788 MB |
652 | scalar(o) |
653 | OP *o; | |
79072805 LW |
654 | { |
655 | OP *kid; | |
656 | ||
a0d0e21e | 657 | /* assumes no premature commitment */ |
5dc0d613 MB |
658 | if (!o || (o->op_flags & OPf_WANT) || error_count |
659 | || o->op_type == OP_RETURN) | |
11343788 | 660 | return o; |
79072805 | 661 | |
5dc0d613 | 662 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_SCALAR; |
79072805 | 663 | |
11343788 | 664 | switch (o->op_type) { |
79072805 | 665 | case OP_REPEAT: |
11343788 MB |
666 | if (o->op_private & OPpREPEAT_DOLIST) |
667 | null(((LISTOP*)cBINOPo->op_first)->op_first); | |
668 | scalar(cBINOPo->op_first); | |
8990e307 | 669 | break; |
79072805 LW |
670 | case OP_OR: |
671 | case OP_AND: | |
672 | case OP_COND_EXPR: | |
11343788 | 673 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
8990e307 | 674 | scalar(kid); |
79072805 | 675 | break; |
a0d0e21e | 676 | case OP_SPLIT: |
11343788 | 677 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e LW |
678 | if (!kPMOP->op_pmreplroot) |
679 | deprecate("implicit split to @_"); | |
680 | } | |
681 | /* FALL THROUGH */ | |
79072805 LW |
682 | case OP_MATCH: |
683 | case OP_SUBST: | |
684 | case OP_NULL: | |
8990e307 | 685 | default: |
11343788 MB |
686 | if (o->op_flags & OPf_KIDS) { |
687 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) | |
8990e307 LW |
688 | scalar(kid); |
689 | } | |
79072805 LW |
690 | break; |
691 | case OP_LEAVE: | |
692 | case OP_LEAVETRY: | |
5dc0d613 | 693 | kid = cLISTOPo->op_first; |
54310121 | 694 | scalar(kid); |
695 | while (kid = kid->op_sibling) { | |
696 | if (kid->op_sibling) | |
697 | scalarvoid(kid); | |
698 | else | |
699 | scalar(kid); | |
700 | } | |
0f15f207 | 701 | WITH_THR(curcop = &compiling); |
54310121 | 702 | break; |
748a9306 | 703 | case OP_SCOPE: |
79072805 | 704 | case OP_LINESEQ: |
8990e307 | 705 | case OP_LIST: |
11343788 | 706 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
707 | if (kid->op_sibling) |
708 | scalarvoid(kid); | |
709 | else | |
710 | scalar(kid); | |
711 | } | |
0f15f207 | 712 | WITH_THR(curcop = &compiling); |
79072805 LW |
713 | break; |
714 | } | |
11343788 | 715 | return o; |
79072805 LW |
716 | } |
717 | ||
718 | OP * | |
11343788 MB |
719 | scalarvoid(o) |
720 | OP *o; | |
79072805 LW |
721 | { |
722 | OP *kid; | |
8990e307 LW |
723 | char* useless = 0; |
724 | SV* sv; | |
79072805 | 725 | |
54310121 | 726 | /* assumes no premature commitment */ |
5dc0d613 MB |
727 | if (!o || (o->op_flags & OPf_WANT) == OPf_WANT_LIST || error_count |
728 | || o->op_type == OP_RETURN) | |
11343788 | 729 | return o; |
79072805 | 730 | |
5dc0d613 | 731 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_VOID; |
79072805 | 732 | |
11343788 | 733 | switch (o->op_type) { |
79072805 | 734 | default: |
11343788 | 735 | if (!(opargs[o->op_type] & OA_FOLDCONST)) |
8990e307 | 736 | break; |
36477c24 | 737 | /* FALL THROUGH */ |
738 | case OP_REPEAT: | |
11343788 | 739 | if (o->op_flags & OPf_STACKED) |
8990e307 LW |
740 | break; |
741 | /* FALL THROUGH */ | |
742 | case OP_GVSV: | |
743 | case OP_WANTARRAY: | |
744 | case OP_GV: | |
745 | case OP_PADSV: | |
746 | case OP_PADAV: | |
747 | case OP_PADHV: | |
748 | case OP_PADANY: | |
749 | case OP_AV2ARYLEN: | |
8990e307 | 750 | case OP_REF: |
a0d0e21e LW |
751 | case OP_REFGEN: |
752 | case OP_SREFGEN: | |
8990e307 LW |
753 | case OP_DEFINED: |
754 | case OP_HEX: | |
755 | case OP_OCT: | |
756 | case OP_LENGTH: | |
757 | case OP_SUBSTR: | |
758 | case OP_VEC: | |
759 | case OP_INDEX: | |
760 | case OP_RINDEX: | |
761 | case OP_SPRINTF: | |
762 | case OP_AELEM: | |
763 | case OP_AELEMFAST: | |
764 | case OP_ASLICE: | |
8990e307 LW |
765 | case OP_HELEM: |
766 | case OP_HSLICE: | |
767 | case OP_UNPACK: | |
768 | case OP_PACK: | |
8990e307 LW |
769 | case OP_JOIN: |
770 | case OP_LSLICE: | |
771 | case OP_ANONLIST: | |
772 | case OP_ANONHASH: | |
773 | case OP_SORT: | |
774 | case OP_REVERSE: | |
775 | case OP_RANGE: | |
776 | case OP_FLIP: | |
777 | case OP_FLOP: | |
778 | case OP_CALLER: | |
779 | case OP_FILENO: | |
780 | case OP_EOF: | |
781 | case OP_TELL: | |
782 | case OP_GETSOCKNAME: | |
783 | case OP_GETPEERNAME: | |
784 | case OP_READLINK: | |
785 | case OP_TELLDIR: | |
786 | case OP_GETPPID: | |
787 | case OP_GETPGRP: | |
788 | case OP_GETPRIORITY: | |
789 | case OP_TIME: | |
790 | case OP_TMS: | |
791 | case OP_LOCALTIME: | |
792 | case OP_GMTIME: | |
793 | case OP_GHBYNAME: | |
794 | case OP_GHBYADDR: | |
795 | case OP_GHOSTENT: | |
796 | case OP_GNBYNAME: | |
797 | case OP_GNBYADDR: | |
798 | case OP_GNETENT: | |
799 | case OP_GPBYNAME: | |
800 | case OP_GPBYNUMBER: | |
801 | case OP_GPROTOENT: | |
802 | case OP_GSBYNAME: | |
803 | case OP_GSBYPORT: | |
804 | case OP_GSERVENT: | |
805 | case OP_GPWNAM: | |
806 | case OP_GPWUID: | |
807 | case OP_GGRNAM: | |
808 | case OP_GGRGID: | |
809 | case OP_GETLOGIN: | |
11343788 MB |
810 | if (!(o->op_private & OPpLVAL_INTRO)) |
811 | useless = op_desc[o->op_type]; | |
8990e307 LW |
812 | break; |
813 | ||
814 | case OP_RV2GV: | |
815 | case OP_RV2SV: | |
816 | case OP_RV2AV: | |
817 | case OP_RV2HV: | |
11343788 MB |
818 | if (!(o->op_private & OPpLVAL_INTRO) && |
819 | (!o->op_sibling || o->op_sibling->op_type != OP_READLINE)) | |
8990e307 LW |
820 | useless = "a variable"; |
821 | break; | |
79072805 | 822 | |
93a17b20 | 823 | case OP_NEXTSTATE: |
8990e307 | 824 | case OP_DBSTATE: |
0f15f207 | 825 | WITH_THR(curcop = ((COP*)o)); /* for warning below */ |
93a17b20 LW |
826 | break; |
827 | ||
79072805 | 828 | case OP_CONST: |
11343788 | 829 | sv = cSVOPo->op_sv; |
8990e307 LW |
830 | if (dowarn) { |
831 | useless = "a constant"; | |
832 | if (SvNIOK(sv) && (SvNV(sv) == 0.0 || SvNV(sv) == 1.0)) | |
833 | useless = 0; | |
834 | else if (SvPOK(sv)) { | |
835 | if (strnEQ(SvPVX(sv), "di", 2) || | |
a0d0e21e | 836 | strnEQ(SvPVX(sv), "ds", 2) || |
8990e307 LW |
837 | strnEQ(SvPVX(sv), "ig", 2)) |
838 | useless = 0; | |
839 | } | |
840 | } | |
11343788 | 841 | null(o); /* don't execute a constant */ |
8990e307 | 842 | SvREFCNT_dec(sv); /* don't even remember it */ |
79072805 LW |
843 | break; |
844 | ||
845 | case OP_POSTINC: | |
11343788 MB |
846 | o->op_type = OP_PREINC; /* pre-increment is faster */ |
847 | o->op_ppaddr = ppaddr[OP_PREINC]; | |
79072805 LW |
848 | break; |
849 | ||
850 | case OP_POSTDEC: | |
11343788 MB |
851 | o->op_type = OP_PREDEC; /* pre-decrement is faster */ |
852 | o->op_ppaddr = ppaddr[OP_PREDEC]; | |
79072805 LW |
853 | break; |
854 | ||
79072805 LW |
855 | case OP_OR: |
856 | case OP_AND: | |
857 | case OP_COND_EXPR: | |
11343788 | 858 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
859 | scalarvoid(kid); |
860 | break; | |
5aabfad6 | 861 | |
a0d0e21e | 862 | case OP_NULL: |
11343788 | 863 | if (o->op_targ == OP_NEXTSTATE || o->op_targ == OP_DBSTATE) |
0f15f207 | 864 | WITH_THR(curcop = ((COP*)o)); /* for warning below */ |
11343788 | 865 | if (o->op_flags & OPf_STACKED) |
a0d0e21e | 866 | break; |
5aabfad6 | 867 | /* FALL THROUGH */ |
79072805 LW |
868 | case OP_ENTERTRY: |
869 | case OP_ENTER: | |
870 | case OP_SCALAR: | |
11343788 | 871 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 872 | break; |
54310121 | 873 | /* FALL THROUGH */ |
463ee0b2 | 874 | case OP_SCOPE: |
79072805 LW |
875 | case OP_LEAVE: |
876 | case OP_LEAVETRY: | |
a0d0e21e | 877 | case OP_LEAVELOOP: |
79072805 | 878 | case OP_LINESEQ: |
79072805 | 879 | case OP_LIST: |
11343788 | 880 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
881 | scalarvoid(kid); |
882 | break; | |
c90c0ff4 | 883 | case OP_ENTEREVAL: |
5196be3e | 884 | scalarkids(o); |
c90c0ff4 | 885 | break; |
5aabfad6 | 886 | case OP_REQUIRE: |
c90c0ff4 | 887 | /* all requires must return a boolean value */ |
5196be3e MB |
888 | o->op_flags &= ~OPf_WANT; |
889 | return scalar(o); | |
a0d0e21e | 890 | case OP_SPLIT: |
11343788 | 891 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e LW |
892 | if (!kPMOP->op_pmreplroot) |
893 | deprecate("implicit split to @_"); | |
894 | } | |
895 | break; | |
79072805 | 896 | } |
8990e307 LW |
897 | if (useless && dowarn) |
898 | warn("Useless use of %s in void context", useless); | |
11343788 | 899 | return o; |
79072805 LW |
900 | } |
901 | ||
902 | OP * | |
11343788 MB |
903 | listkids(o) |
904 | OP *o; | |
79072805 LW |
905 | { |
906 | OP *kid; | |
11343788 MB |
907 | if (o && o->op_flags & OPf_KIDS) { |
908 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
79072805 LW |
909 | list(kid); |
910 | } | |
11343788 | 911 | return o; |
79072805 LW |
912 | } |
913 | ||
914 | OP * | |
11343788 MB |
915 | list(o) |
916 | OP *o; | |
79072805 LW |
917 | { |
918 | OP *kid; | |
919 | ||
a0d0e21e | 920 | /* assumes no premature commitment */ |
5dc0d613 MB |
921 | if (!o || (o->op_flags & OPf_WANT) || error_count |
922 | || o->op_type == OP_RETURN) | |
11343788 | 923 | return o; |
79072805 | 924 | |
5dc0d613 | 925 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_LIST; |
79072805 | 926 | |
11343788 | 927 | switch (o->op_type) { |
79072805 LW |
928 | case OP_FLOP: |
929 | case OP_REPEAT: | |
11343788 | 930 | list(cBINOPo->op_first); |
79072805 LW |
931 | break; |
932 | case OP_OR: | |
933 | case OP_AND: | |
934 | case OP_COND_EXPR: | |
11343788 | 935 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
936 | list(kid); |
937 | break; | |
938 | default: | |
939 | case OP_MATCH: | |
940 | case OP_SUBST: | |
941 | case OP_NULL: | |
11343788 | 942 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 943 | break; |
11343788 MB |
944 | if (!o->op_next && cUNOPo->op_first->op_type == OP_FLOP) { |
945 | list(cBINOPo->op_first); | |
946 | return gen_constant_list(o); | |
79072805 LW |
947 | } |
948 | case OP_LIST: | |
11343788 | 949 | listkids(o); |
79072805 LW |
950 | break; |
951 | case OP_LEAVE: | |
952 | case OP_LEAVETRY: | |
5dc0d613 | 953 | kid = cLISTOPo->op_first; |
54310121 | 954 | list(kid); |
955 | while (kid = kid->op_sibling) { | |
956 | if (kid->op_sibling) | |
957 | scalarvoid(kid); | |
958 | else | |
959 | list(kid); | |
960 | } | |
0f15f207 | 961 | WITH_THR(curcop = &compiling); |
54310121 | 962 | break; |
748a9306 | 963 | case OP_SCOPE: |
79072805 | 964 | case OP_LINESEQ: |
11343788 | 965 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
966 | if (kid->op_sibling) |
967 | scalarvoid(kid); | |
968 | else | |
969 | list(kid); | |
970 | } | |
0f15f207 | 971 | WITH_THR(curcop = &compiling); |
79072805 | 972 | break; |
c90c0ff4 | 973 | case OP_REQUIRE: |
974 | /* all requires must return a boolean value */ | |
5196be3e MB |
975 | o->op_flags &= ~OPf_WANT; |
976 | return scalar(o); | |
79072805 | 977 | } |
11343788 | 978 | return o; |
79072805 LW |
979 | } |
980 | ||
981 | OP * | |
11343788 MB |
982 | scalarseq(o) |
983 | OP *o; | |
79072805 LW |
984 | { |
985 | OP *kid; | |
986 | ||
11343788 MB |
987 | if (o) { |
988 | if (o->op_type == OP_LINESEQ || | |
989 | o->op_type == OP_SCOPE || | |
990 | o->op_type == OP_LEAVE || | |
991 | o->op_type == OP_LEAVETRY) | |
463ee0b2 | 992 | { |
0f15f207 | 993 | dTHR; |
11343788 | 994 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
ed6116ce | 995 | if (kid->op_sibling) { |
463ee0b2 | 996 | scalarvoid(kid); |
ed6116ce | 997 | } |
463ee0b2 LW |
998 | } |
999 | curcop = &compiling; | |
79072805 | 1000 | } |
11343788 | 1001 | o->op_flags &= ~OPf_PARENS; |
85e6fe83 | 1002 | if (hints & HINT_BLOCK_SCOPE) |
11343788 | 1003 | o->op_flags |= OPf_PARENS; |
79072805 | 1004 | } |
8990e307 | 1005 | else |
11343788 MB |
1006 | o = newOP(OP_STUB, 0); |
1007 | return o; | |
79072805 LW |
1008 | } |
1009 | ||
a0d0e21e | 1010 | static OP * |
11343788 MB |
1011 | modkids(o, type) |
1012 | OP *o; | |
79072805 LW |
1013 | I32 type; |
1014 | { | |
1015 | OP *kid; | |
11343788 MB |
1016 | if (o && o->op_flags & OPf_KIDS) { |
1017 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
463ee0b2 | 1018 | mod(kid, type); |
79072805 | 1019 | } |
11343788 | 1020 | return o; |
79072805 LW |
1021 | } |
1022 | ||
463ee0b2 | 1023 | static I32 modcount; |
79072805 LW |
1024 | |
1025 | OP * | |
11343788 MB |
1026 | mod(o, type) |
1027 | OP *o; | |
79072805 LW |
1028 | I32 type; |
1029 | { | |
11343788 | 1030 | dTHR; |
79072805 LW |
1031 | OP *kid; |
1032 | SV *sv; | |
1033 | ||
11343788 MB |
1034 | if (!o || error_count) |
1035 | return o; | |
79072805 | 1036 | |
11343788 | 1037 | switch (o->op_type) { |
68dc0745 | 1038 | case OP_UNDEF: |
3e3baf6d | 1039 | modcount++; |
5dc0d613 | 1040 | return o; |
a0d0e21e | 1041 | case OP_CONST: |
11343788 | 1042 | if (!(o->op_private & (OPpCONST_ARYBASE))) |
a0d0e21e LW |
1043 | goto nomod; |
1044 | if (eval_start && eval_start->op_type == OP_CONST) { | |
1045 | compiling.cop_arybase = (I32)SvIV(((SVOP*)eval_start)->op_sv); | |
1046 | eval_start = 0; | |
1047 | } | |
1048 | else if (!type) { | |
1049 | SAVEI32(compiling.cop_arybase); | |
748a9306 | 1050 | compiling.cop_arybase = 0; |
a0d0e21e LW |
1051 | } |
1052 | else if (type == OP_REFGEN) | |
1053 | goto nomod; | |
1054 | else | |
1055 | croak("That use of $[ is unsupported"); | |
1056 | break; | |
5f05dabc | 1057 | case OP_STUB: |
5196be3e | 1058 | if (o->op_flags & OPf_PARENS) |
5f05dabc | 1059 | break; |
1060 | goto nomod; | |
a0d0e21e LW |
1061 | case OP_ENTERSUB: |
1062 | if ((type == OP_UNDEF || type == OP_REFGEN) && | |
11343788 MB |
1063 | !(o->op_flags & OPf_STACKED)) { |
1064 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
1065 | o->op_ppaddr = ppaddr[OP_RV2CV]; | |
1066 | assert(cUNOPo->op_first->op_type == OP_NULL); | |
1067 | null(((LISTOP*)cUNOPo->op_first)->op_first);/* disable pushmark */ | |
79072805 LW |
1068 | break; |
1069 | } | |
1070 | /* FALL THROUGH */ | |
1071 | default: | |
a0d0e21e LW |
1072 | nomod: |
1073 | /* grep, foreach, subcalls, refgen */ | |
1074 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) | |
1075 | break; | |
46fc3d4c | 1076 | yyerror(form("Can't modify %s in %s", |
5dc0d613 | 1077 | op_desc[o->op_type], |
46fc3d4c | 1078 | type ? op_desc[type] : "local")); |
11343788 | 1079 | return o; |
79072805 | 1080 | |
a0d0e21e LW |
1081 | case OP_PREINC: |
1082 | case OP_PREDEC: | |
1083 | case OP_POW: | |
1084 | case OP_MULTIPLY: | |
1085 | case OP_DIVIDE: | |
1086 | case OP_MODULO: | |
1087 | case OP_REPEAT: | |
1088 | case OP_ADD: | |
1089 | case OP_SUBTRACT: | |
1090 | case OP_CONCAT: | |
1091 | case OP_LEFT_SHIFT: | |
1092 | case OP_RIGHT_SHIFT: | |
1093 | case OP_BIT_AND: | |
1094 | case OP_BIT_XOR: | |
1095 | case OP_BIT_OR: | |
1096 | case OP_I_MULTIPLY: | |
1097 | case OP_I_DIVIDE: | |
1098 | case OP_I_MODULO: | |
1099 | case OP_I_ADD: | |
1100 | case OP_I_SUBTRACT: | |
11343788 | 1101 | if (!(o->op_flags & OPf_STACKED)) |
a0d0e21e LW |
1102 | goto nomod; |
1103 | modcount++; | |
1104 | break; | |
1105 | ||
79072805 | 1106 | case OP_COND_EXPR: |
11343788 | 1107 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 | 1108 | mod(kid, type); |
79072805 LW |
1109 | break; |
1110 | ||
1111 | case OP_RV2AV: | |
1112 | case OP_RV2HV: | |
11343788 | 1113 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) { |
748a9306 | 1114 | modcount = 10000; |
11343788 | 1115 | return o; /* Treat \(@foo) like ordinary list. */ |
748a9306 LW |
1116 | } |
1117 | /* FALL THROUGH */ | |
79072805 | 1118 | case OP_RV2GV: |
5dc0d613 | 1119 | if (scalar_mod_type(o, type)) |
3fe9a6f1 | 1120 | goto nomod; |
11343788 | 1121 | ref(cUNOPo->op_first, o->op_type); |
79072805 LW |
1122 | /* FALL THROUGH */ |
1123 | case OP_AASSIGN: | |
1124 | case OP_ASLICE: | |
1125 | case OP_HSLICE: | |
93a17b20 LW |
1126 | case OP_NEXTSTATE: |
1127 | case OP_DBSTATE: | |
a0d0e21e LW |
1128 | case OP_REFGEN: |
1129 | case OP_CHOMP: | |
463ee0b2 | 1130 | modcount = 10000; |
79072805 | 1131 | break; |
463ee0b2 | 1132 | case OP_RV2SV: |
11343788 | 1133 | if (!type && cUNOPo->op_first->op_type != OP_GV) |
4633a7c4 | 1134 | croak("Can't localize a reference"); |
11343788 | 1135 | ref(cUNOPo->op_first, o->op_type); |
463ee0b2 | 1136 | /* FALL THROUGH */ |
79072805 | 1137 | case OP_GV: |
463ee0b2 LW |
1138 | case OP_AV2ARYLEN: |
1139 | case OP_SASSIGN: | |
8990e307 LW |
1140 | case OP_AELEMFAST: |
1141 | modcount++; | |
1142 | break; | |
1143 | ||
748a9306 LW |
1144 | case OP_PADAV: |
1145 | case OP_PADHV: | |
1146 | modcount = 10000; | |
5196be3e MB |
1147 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) |
1148 | return o; /* Treat \(@foo) like ordinary list. */ | |
1149 | if (scalar_mod_type(o, type)) | |
3fe9a6f1 | 1150 | goto nomod; |
748a9306 LW |
1151 | /* FALL THROUGH */ |
1152 | case OP_PADSV: | |
1153 | modcount++; | |
1154 | if (!type) | |
1155 | croak("Can't localize lexical variable %s", | |
11343788 | 1156 | SvPV(*av_fetch(comppad_name, o->op_targ, 4), na)); |
463ee0b2 LW |
1157 | break; |
1158 | ||
748a9306 LW |
1159 | case OP_PUSHMARK: |
1160 | break; | |
a0d0e21e | 1161 | |
69969c6f SB |
1162 | case OP_KEYS: |
1163 | if (type != OP_SASSIGN) | |
1164 | goto nomod; | |
5f05dabc | 1165 | /* FALL THROUGH */ |
a0d0e21e | 1166 | case OP_POS: |
463ee0b2 | 1167 | case OP_VEC: |
a0d0e21e | 1168 | case OP_SUBSTR: |
11343788 MB |
1169 | pad_free(o->op_targ); |
1170 | o->op_targ = pad_alloc(o->op_type, SVs_PADMY); | |
5dc0d613 | 1171 | assert(SvTYPE(PAD_SV(o->op_targ)) == SVt_NULL); |
11343788 MB |
1172 | if (o->op_flags & OPf_KIDS) |
1173 | mod(cBINOPo->op_first->op_sibling, type); | |
463ee0b2 | 1174 | break; |
a0d0e21e | 1175 | |
463ee0b2 LW |
1176 | case OP_AELEM: |
1177 | case OP_HELEM: | |
11343788 | 1178 | ref(cBINOPo->op_first, o->op_type); |
68dc0745 | 1179 | if (type == OP_ENTERSUB && |
5dc0d613 MB |
1180 | !(o->op_private & (OPpLVAL_INTRO | OPpDEREF))) |
1181 | o->op_private |= OPpLVAL_DEFER; | |
a0d0e21e | 1182 | modcount++; |
463ee0b2 LW |
1183 | break; |
1184 | ||
1185 | case OP_SCOPE: | |
1186 | case OP_LEAVE: | |
1187 | case OP_ENTER: | |
11343788 MB |
1188 | if (o->op_flags & OPf_KIDS) |
1189 | mod(cLISTOPo->op_last, type); | |
a0d0e21e LW |
1190 | break; |
1191 | ||
1192 | case OP_NULL: | |
11343788 | 1193 | if (!(o->op_flags & OPf_KIDS)) |
463ee0b2 | 1194 | break; |
11343788 MB |
1195 | if (o->op_targ != OP_LIST) { |
1196 | mod(cBINOPo->op_first, type); | |
a0d0e21e LW |
1197 | break; |
1198 | } | |
1199 | /* FALL THROUGH */ | |
463ee0b2 | 1200 | case OP_LIST: |
11343788 | 1201 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1202 | mod(kid, type); |
1203 | break; | |
1204 | } | |
11343788 | 1205 | o->op_flags |= OPf_MOD; |
a0d0e21e LW |
1206 | |
1207 | if (type == OP_AASSIGN || type == OP_SASSIGN) | |
11343788 | 1208 | o->op_flags |= OPf_SPECIAL|OPf_REF; |
a0d0e21e | 1209 | else if (!type) { |
11343788 MB |
1210 | o->op_private |= OPpLVAL_INTRO; |
1211 | o->op_flags &= ~OPf_SPECIAL; | |
463ee0b2 | 1212 | } |
a0d0e21e | 1213 | else if (type != OP_GREPSTART && type != OP_ENTERSUB) |
11343788 MB |
1214 | o->op_flags |= OPf_REF; |
1215 | return o; | |
463ee0b2 LW |
1216 | } |
1217 | ||
3fe9a6f1 | 1218 | static bool |
5196be3e MB |
1219 | scalar_mod_type(o, type) |
1220 | OP *o; | |
3fe9a6f1 | 1221 | I32 type; |
1222 | { | |
1223 | switch (type) { | |
1224 | case OP_SASSIGN: | |
5196be3e | 1225 | if (o->op_type == OP_RV2GV) |
3fe9a6f1 | 1226 | return FALSE; |
1227 | /* FALL THROUGH */ | |
1228 | case OP_PREINC: | |
1229 | case OP_PREDEC: | |
1230 | case OP_POSTINC: | |
1231 | case OP_POSTDEC: | |
1232 | case OP_I_PREINC: | |
1233 | case OP_I_PREDEC: | |
1234 | case OP_I_POSTINC: | |
1235 | case OP_I_POSTDEC: | |
1236 | case OP_POW: | |
1237 | case OP_MULTIPLY: | |
1238 | case OP_DIVIDE: | |
1239 | case OP_MODULO: | |
1240 | case OP_REPEAT: | |
1241 | case OP_ADD: | |
1242 | case OP_SUBTRACT: | |
1243 | case OP_I_MULTIPLY: | |
1244 | case OP_I_DIVIDE: | |
1245 | case OP_I_MODULO: | |
1246 | case OP_I_ADD: | |
1247 | case OP_I_SUBTRACT: | |
1248 | case OP_LEFT_SHIFT: | |
1249 | case OP_RIGHT_SHIFT: | |
1250 | case OP_BIT_AND: | |
1251 | case OP_BIT_XOR: | |
1252 | case OP_BIT_OR: | |
1253 | case OP_CONCAT: | |
1254 | case OP_SUBST: | |
1255 | case OP_TRANS: | |
1256 | case OP_ANDASSIGN: /* may work later */ | |
1257 | case OP_ORASSIGN: /* may work later */ | |
1258 | return TRUE; | |
1259 | default: | |
1260 | return FALSE; | |
1261 | } | |
1262 | } | |
1263 | ||
463ee0b2 | 1264 | OP * |
11343788 MB |
1265 | refkids(o, type) |
1266 | OP *o; | |
463ee0b2 LW |
1267 | I32 type; |
1268 | { | |
1269 | OP *kid; | |
11343788 MB |
1270 | if (o && o->op_flags & OPf_KIDS) { |
1271 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
463ee0b2 LW |
1272 | ref(kid, type); |
1273 | } | |
11343788 | 1274 | return o; |
463ee0b2 LW |
1275 | } |
1276 | ||
1277 | OP * | |
11343788 MB |
1278 | ref(o, type) |
1279 | OP *o; | |
463ee0b2 LW |
1280 | I32 type; |
1281 | { | |
1282 | OP *kid; | |
463ee0b2 | 1283 | |
11343788 MB |
1284 | if (!o || error_count) |
1285 | return o; | |
463ee0b2 | 1286 | |
11343788 | 1287 | switch (o->op_type) { |
a0d0e21e LW |
1288 | case OP_ENTERSUB: |
1289 | if ((type == OP_DEFINED) && | |
11343788 MB |
1290 | !(o->op_flags & OPf_STACKED)) { |
1291 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
1292 | o->op_ppaddr = ppaddr[OP_RV2CV]; | |
1293 | assert(cUNOPo->op_first->op_type == OP_NULL); | |
1294 | null(((LISTOP*)cUNOPo->op_first)->op_first); /* disable pushmark */ | |
1295 | o->op_flags |= OPf_SPECIAL; | |
8990e307 LW |
1296 | } |
1297 | break; | |
1298 | ||
463ee0b2 | 1299 | case OP_COND_EXPR: |
11343788 | 1300 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1301 | ref(kid, type); |
1302 | break; | |
8990e307 | 1303 | case OP_RV2SV: |
11343788 | 1304 | ref(cUNOPo->op_first, o->op_type); |
4633a7c4 LW |
1305 | /* FALL THROUGH */ |
1306 | case OP_PADSV: | |
5f05dabc | 1307 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1308 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1309 | : type == OP_RV2HV ? OPpDEREF_HV | |
1310 | : OPpDEREF_SV); | |
11343788 | 1311 | o->op_flags |= OPf_MOD; |
a0d0e21e | 1312 | } |
8990e307 LW |
1313 | break; |
1314 | ||
463ee0b2 LW |
1315 | case OP_RV2AV: |
1316 | case OP_RV2HV: | |
11343788 | 1317 | o->op_flags |= OPf_REF; |
8990e307 | 1318 | /* FALL THROUGH */ |
463ee0b2 | 1319 | case OP_RV2GV: |
11343788 | 1320 | ref(cUNOPo->op_first, o->op_type); |
463ee0b2 | 1321 | break; |
8990e307 | 1322 | |
463ee0b2 LW |
1323 | case OP_PADAV: |
1324 | case OP_PADHV: | |
11343788 | 1325 | o->op_flags |= OPf_REF; |
79072805 | 1326 | break; |
8990e307 LW |
1327 | |
1328 | case OP_SCALAR: | |
79072805 | 1329 | case OP_NULL: |
11343788 | 1330 | if (!(o->op_flags & OPf_KIDS)) |
463ee0b2 | 1331 | break; |
11343788 | 1332 | ref(cBINOPo->op_first, type); |
79072805 LW |
1333 | break; |
1334 | case OP_AELEM: | |
1335 | case OP_HELEM: | |
11343788 | 1336 | ref(cBINOPo->op_first, o->op_type); |
5f05dabc | 1337 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1338 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1339 | : type == OP_RV2HV ? OPpDEREF_HV | |
1340 | : OPpDEREF_SV); | |
11343788 | 1341 | o->op_flags |= OPf_MOD; |
8990e307 | 1342 | } |
79072805 LW |
1343 | break; |
1344 | ||
463ee0b2 | 1345 | case OP_SCOPE: |
79072805 LW |
1346 | case OP_LEAVE: |
1347 | case OP_ENTER: | |
8990e307 | 1348 | case OP_LIST: |
11343788 | 1349 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1350 | break; |
11343788 | 1351 | ref(cLISTOPo->op_last, type); |
79072805 | 1352 | break; |
a0d0e21e LW |
1353 | default: |
1354 | break; | |
79072805 | 1355 | } |
11343788 | 1356 | return scalar(o); |
8990e307 | 1357 | |
79072805 LW |
1358 | } |
1359 | ||
1360 | OP * | |
11343788 MB |
1361 | my(o) |
1362 | OP *o; | |
93a17b20 LW |
1363 | { |
1364 | OP *kid; | |
93a17b20 LW |
1365 | I32 type; |
1366 | ||
11343788 MB |
1367 | if (!o || error_count) |
1368 | return o; | |
93a17b20 | 1369 | |
11343788 | 1370 | type = o->op_type; |
93a17b20 | 1371 | if (type == OP_LIST) { |
11343788 | 1372 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
93a17b20 LW |
1373 | my(kid); |
1374 | } | |
1375 | else if (type != OP_PADSV && | |
1376 | type != OP_PADAV && | |
1377 | type != OP_PADHV && | |
1378 | type != OP_PUSHMARK) | |
1379 | { | |
5dc0d613 | 1380 | yyerror(form("Can't declare %s in my", op_desc[o->op_type])); |
11343788 | 1381 | return o; |
93a17b20 | 1382 | } |
11343788 MB |
1383 | o->op_flags |= OPf_MOD; |
1384 | o->op_private |= OPpLVAL_INTRO; | |
1385 | return o; | |
93a17b20 LW |
1386 | } |
1387 | ||
1388 | OP * | |
79072805 LW |
1389 | sawparens(o) |
1390 | OP *o; | |
1391 | { | |
1392 | if (o) | |
1393 | o->op_flags |= OPf_PARENS; | |
1394 | return o; | |
1395 | } | |
1396 | ||
1397 | OP * | |
1398 | bind_match(type, left, right) | |
1399 | I32 type; | |
1400 | OP *left; | |
1401 | OP *right; | |
1402 | { | |
11343788 | 1403 | OP *o; |
79072805 | 1404 | |
2ae324a7 | 1405 | if (dowarn && |
1406 | (left->op_type == OP_RV2AV || | |
1407 | left->op_type == OP_RV2HV || | |
1408 | left->op_type == OP_PADAV || | |
1409 | left->op_type == OP_PADHV)) { | |
1410 | char *desc = op_desc[(right->op_type == OP_SUBST || | |
1411 | right->op_type == OP_TRANS) | |
1412 | ? right->op_type : OP_MATCH]; | |
1413 | char *sample = ((left->op_type == OP_RV2AV || | |
1414 | left->op_type == OP_PADAV) | |
1415 | ? "@array" : "%hash"); | |
1416 | warn("Applying %s to %s will act on scalar(%s)", desc, sample, sample); | |
1417 | } | |
1418 | ||
79072805 LW |
1419 | if (right->op_type == OP_MATCH || |
1420 | right->op_type == OP_SUBST || | |
1421 | right->op_type == OP_TRANS) { | |
1422 | right->op_flags |= OPf_STACKED; | |
1423 | if (right->op_type != OP_MATCH) | |
463ee0b2 | 1424 | left = mod(left, right->op_type); |
79072805 | 1425 | if (right->op_type == OP_TRANS) |
11343788 | 1426 | o = newBINOP(OP_NULL, OPf_STACKED, scalar(left), right); |
79072805 | 1427 | else |
11343788 | 1428 | o = prepend_elem(right->op_type, scalar(left), right); |
79072805 | 1429 | if (type == OP_NOT) |
11343788 MB |
1430 | return newUNOP(OP_NOT, 0, scalar(o)); |
1431 | return o; | |
79072805 LW |
1432 | } |
1433 | else | |
1434 | return bind_match(type, left, | |
1435 | pmruntime(newPMOP(OP_MATCH, 0), right, Nullop)); | |
1436 | } | |
1437 | ||
1438 | OP * | |
11343788 MB |
1439 | invert(o) |
1440 | OP *o; | |
79072805 | 1441 | { |
11343788 MB |
1442 | if (!o) |
1443 | return o; | |
79072805 | 1444 | /* XXX need to optimize away NOT NOT here? Or do we let optimizer do it? */ |
11343788 | 1445 | return newUNOP(OP_NOT, OPf_SPECIAL, scalar(o)); |
79072805 LW |
1446 | } |
1447 | ||
1448 | OP * | |
1449 | scope(o) | |
1450 | OP *o; | |
1451 | { | |
1452 | if (o) { | |
4633a7c4 | 1453 | if (o->op_flags & OPf_PARENS || perldb || tainting) { |
463ee0b2 LW |
1454 | o = prepend_elem(OP_LINESEQ, newOP(OP_ENTER, 0), o); |
1455 | o->op_type = OP_LEAVE; | |
1456 | o->op_ppaddr = ppaddr[OP_LEAVE]; | |
1457 | } | |
1458 | else { | |
1459 | if (o->op_type == OP_LINESEQ) { | |
1460 | OP *kid; | |
1461 | o->op_type = OP_SCOPE; | |
1462 | o->op_ppaddr = ppaddr[OP_SCOPE]; | |
1463 | kid = ((LISTOP*)o)->op_first; | |
748a9306 LW |
1464 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE){ |
1465 | SvREFCNT_dec(((COP*)kid)->cop_filegv); | |
8990e307 | 1466 | null(kid); |
748a9306 | 1467 | } |
463ee0b2 LW |
1468 | } |
1469 | else | |
748a9306 | 1470 | o = newLISTOP(OP_SCOPE, 0, o, Nullop); |
463ee0b2 | 1471 | } |
79072805 LW |
1472 | } |
1473 | return o; | |
1474 | } | |
1475 | ||
a0d0e21e | 1476 | int |
55497cff | 1477 | block_start(full) |
1478 | int full; | |
79072805 | 1479 | { |
11343788 | 1480 | dTHR; |
a0d0e21e | 1481 | int retval = savestack_ix; |
55497cff | 1482 | SAVEI32(comppad_name_floor); |
1483 | if (full) { | |
1484 | if ((comppad_name_fill = AvFILL(comppad_name)) > 0) | |
1485 | comppad_name_floor = comppad_name_fill; | |
1486 | else | |
1487 | comppad_name_floor = 0; | |
1488 | } | |
1489 | SAVEI32(min_intro_pending); | |
1490 | SAVEI32(max_intro_pending); | |
a0d0e21e | 1491 | min_intro_pending = 0; |
55497cff | 1492 | SAVEI32(comppad_name_fill); |
1493 | SAVEI32(padix_floor); | |
a0d0e21e LW |
1494 | padix_floor = padix; |
1495 | pad_reset_pending = FALSE; | |
55497cff | 1496 | SAVEI32(hints); |
a0d0e21e LW |
1497 | hints &= ~HINT_BLOCK_SCOPE; |
1498 | return retval; | |
1499 | } | |
1500 | ||
1501 | OP* | |
36477c24 | 1502 | block_end(floor, seq) |
1503 | I32 floor; | |
a0d0e21e LW |
1504 | OP* seq; |
1505 | { | |
11343788 | 1506 | dTHR; |
a0d0e21e LW |
1507 | int needblockscope = hints & HINT_BLOCK_SCOPE; |
1508 | OP* retval = scalarseq(seq); | |
a0d0e21e LW |
1509 | LEAVE_SCOPE(floor); |
1510 | pad_reset_pending = FALSE; | |
1511 | if (needblockscope) | |
1512 | hints |= HINT_BLOCK_SCOPE; /* propagate out */ | |
1513 | pad_leavemy(comppad_name_fill); | |
bbce6d69 | 1514 | cop_seqmax++; |
a0d0e21e LW |
1515 | return retval; |
1516 | } | |
1517 | ||
1518 | void | |
11343788 MB |
1519 | newPROG(o) |
1520 | OP *o; | |
a0d0e21e | 1521 | { |
11343788 | 1522 | dTHR; |
a0d0e21e | 1523 | if (in_eval) { |
5dc0d613 | 1524 | eval_root = newUNOP(OP_LEAVEEVAL, ((in_eval & 4) ? OPf_SPECIAL : 0), o); |
a0d0e21e LW |
1525 | eval_start = linklist(eval_root); |
1526 | eval_root->op_next = 0; | |
1527 | peep(eval_start); | |
1528 | } | |
1529 | else { | |
5dc0d613 | 1530 | if (!o) |
a0d0e21e | 1531 | return; |
11343788 | 1532 | main_root = scope(sawparens(scalarvoid(o))); |
a0d0e21e LW |
1533 | curcop = &compiling; |
1534 | main_start = LINKLIST(main_root); | |
1535 | main_root->op_next = 0; | |
1536 | peep(main_start); | |
748a9306 | 1537 | compcv = 0; |
3841441e | 1538 | |
4fdae800 | 1539 | /* Register with debugger */ |
3841441e CS |
1540 | if (perldb) { |
1541 | CV *cv = perl_get_cv("DB::postponed", FALSE); | |
3841441e CS |
1542 | if (cv) { |
1543 | dSP; | |
1544 | PUSHMARK(sp); | |
1545 | XPUSHs((SV*)compiling.cop_filegv); | |
1546 | PUTBACK; | |
1547 | perl_call_sv((SV*)cv, G_DISCARD); | |
1548 | } | |
1549 | } | |
79072805 | 1550 | } |
79072805 LW |
1551 | } |
1552 | ||
1553 | OP * | |
93a17b20 | 1554 | localize(o, lex) |
79072805 | 1555 | OP *o; |
93a17b20 | 1556 | I32 lex; |
79072805 LW |
1557 | { |
1558 | if (o->op_flags & OPf_PARENS) | |
1559 | list(o); | |
8990e307 | 1560 | else { |
79072805 | 1561 | scalar(o); |
8990e307 LW |
1562 | if (dowarn && bufptr > oldbufptr && bufptr[-1] == ',') { |
1563 | char *s; | |
1564 | for (s = bufptr; *s && (isALNUM(*s) || strchr("@$%, ",*s)); s++) ; | |
a0d0e21e | 1565 | if (*s == ';' || *s == '=') |
8990e307 LW |
1566 | warn("Parens missing around \"%s\" list", lex ? "my" : "local"); |
1567 | } | |
1568 | } | |
93a17b20 | 1569 | in_my = FALSE; |
c750a3ec | 1570 | in_my_stash = Nullhv; |
93a17b20 LW |
1571 | if (lex) |
1572 | return my(o); | |
1573 | else | |
463ee0b2 | 1574 | return mod(o, OP_NULL); /* a bit kludgey */ |
79072805 LW |
1575 | } |
1576 | ||
1577 | OP * | |
1578 | jmaybe(o) | |
1579 | OP *o; | |
1580 | { | |
1581 | if (o->op_type == OP_LIST) { | |
1582 | o = convert(OP_JOIN, 0, | |
1583 | prepend_elem(OP_LIST, | |
85e6fe83 | 1584 | newSVREF(newGVOP(OP_GV, 0, gv_fetchpv(";", TRUE, SVt_PV))), |
79072805 LW |
1585 | o)); |
1586 | } | |
1587 | return o; | |
1588 | } | |
1589 | ||
1590 | OP * | |
1591 | fold_constants(o) | |
1592 | register OP *o; | |
1593 | { | |
11343788 | 1594 | dTHR; |
79072805 LW |
1595 | register OP *curop; |
1596 | I32 type = o->op_type; | |
748a9306 | 1597 | SV *sv; |
79072805 LW |
1598 | |
1599 | if (opargs[type] & OA_RETSCALAR) | |
1600 | scalar(o); | |
1601 | if (opargs[type] & OA_TARGET) | |
ed6116ce | 1602 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 | 1603 | |
85e6fe83 | 1604 | if ((opargs[type] & OA_OTHERINT) && (hints & HINT_INTEGER)) |
a0d0e21e | 1605 | o->op_ppaddr = ppaddr[type = ++(o->op_type)]; |
85e6fe83 | 1606 | |
79072805 LW |
1607 | if (!(opargs[type] & OA_FOLDCONST)) |
1608 | goto nope; | |
1609 | ||
a0d0e21e LW |
1610 | if (error_count) |
1611 | goto nope; /* Don't try to run w/ errors */ | |
1612 | ||
79072805 | 1613 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
93a17b20 LW |
1614 | if (curop->op_type != OP_CONST && |
1615 | curop->op_type != OP_LIST && | |
1616 | curop->op_type != OP_SCALAR && | |
a0d0e21e | 1617 | curop->op_type != OP_NULL && |
93a17b20 | 1618 | curop->op_type != OP_PUSHMARK) { |
79072805 LW |
1619 | goto nope; |
1620 | } | |
1621 | } | |
1622 | ||
1623 | curop = LINKLIST(o); | |
1624 | o->op_next = 0; | |
1625 | op = curop; | |
8da795c6 | 1626 | runops(); |
748a9306 LW |
1627 | sv = *(stack_sp--); |
1628 | if (o->op_targ && sv == PAD_SV(o->op_targ)) /* grab pad temp? */ | |
79072805 | 1629 | pad_swipe(o->op_targ); |
748a9306 LW |
1630 | else if (SvTEMP(sv)) { /* grab mortal temp? */ |
1631 | (void)SvREFCNT_inc(sv); | |
1632 | SvTEMP_off(sv); | |
85e6fe83 | 1633 | } |
79072805 LW |
1634 | op_free(o); |
1635 | if (type == OP_RV2GV) | |
b1cb66bf | 1636 | return newGVOP(OP_GV, 0, (GV*)sv); |
748a9306 LW |
1637 | else { |
1638 | if ((SvFLAGS(sv) & (SVf_IOK|SVf_NOK|SVf_POK)) == SVf_NOK) { | |
1639 | IV iv = SvIV(sv); | |
1640 | if ((double)iv == SvNV(sv)) { /* can we smush double to int */ | |
1641 | SvREFCNT_dec(sv); | |
1642 | sv = newSViv(iv); | |
1643 | } | |
b1cb66bf | 1644 | else |
1645 | SvIOK_off(sv); /* undo SvIV() damage */ | |
748a9306 LW |
1646 | } |
1647 | return newSVOP(OP_CONST, 0, sv); | |
1648 | } | |
79072805 LW |
1649 | |
1650 | nope: | |
1651 | if (!(opargs[type] & OA_OTHERINT)) | |
1652 | return o; | |
79072805 | 1653 | |
85e6fe83 | 1654 | if (!(hints & HINT_INTEGER)) { |
a0d0e21e | 1655 | if (type == OP_DIVIDE || !(o->op_flags & OPf_KIDS)) |
85e6fe83 LW |
1656 | return o; |
1657 | ||
1658 | for (curop = ((UNOP*)o)->op_first; curop; curop = curop->op_sibling) { | |
1659 | if (curop->op_type == OP_CONST) { | |
b1cb66bf | 1660 | if (SvIOK(((SVOP*)curop)->op_sv)) |
85e6fe83 LW |
1661 | continue; |
1662 | return o; | |
1663 | } | |
1664 | if (opargs[curop->op_type] & OA_RETINTEGER) | |
79072805 LW |
1665 | continue; |
1666 | return o; | |
1667 | } | |
a0d0e21e | 1668 | o->op_ppaddr = ppaddr[++(o->op_type)]; |
79072805 LW |
1669 | } |
1670 | ||
79072805 LW |
1671 | return o; |
1672 | } | |
1673 | ||
1674 | OP * | |
1675 | gen_constant_list(o) | |
1676 | register OP *o; | |
1677 | { | |
11343788 | 1678 | dTHR; |
79072805 | 1679 | register OP *curop; |
79072805 | 1680 | I32 oldtmps_floor = tmps_floor; |
79072805 | 1681 | |
a0d0e21e LW |
1682 | list(o); |
1683 | if (error_count) | |
1684 | return o; /* Don't attempt to run with errors */ | |
1685 | ||
1686 | op = curop = LINKLIST(o); | |
1687 | o->op_next = 0; | |
11343788 | 1688 | pp_pushmark(ARGS); |
8da795c6 | 1689 | runops(); |
a0d0e21e | 1690 | op = curop; |
11343788 | 1691 | pp_anonlist(ARGS); |
79072805 | 1692 | tmps_floor = oldtmps_floor; |
79072805 LW |
1693 | |
1694 | o->op_type = OP_RV2AV; | |
1695 | o->op_ppaddr = ppaddr[OP_RV2AV]; | |
79072805 | 1696 | curop = ((UNOP*)o)->op_first; |
a0d0e21e | 1697 | ((UNOP*)o)->op_first = newSVOP(OP_CONST, 0, SvREFCNT_inc(*stack_sp--)); |
79072805 | 1698 | op_free(curop); |
79072805 LW |
1699 | linklist(o); |
1700 | return list(o); | |
1701 | } | |
1702 | ||
1703 | OP * | |
11343788 | 1704 | convert(type, flags, o) |
79072805 LW |
1705 | I32 type; |
1706 | I32 flags; | |
11343788 | 1707 | OP* o; |
79072805 LW |
1708 | { |
1709 | OP *kid; | |
a0d0e21e | 1710 | OP *last = 0; |
79072805 | 1711 | |
11343788 MB |
1712 | if (!o || o->op_type != OP_LIST) |
1713 | o = newLISTOP(OP_LIST, 0, o, Nullop); | |
748a9306 | 1714 | else |
5dc0d613 | 1715 | o->op_flags &= ~OPf_WANT; |
79072805 | 1716 | |
8990e307 | 1717 | if (!(opargs[type] & OA_MARK)) |
11343788 | 1718 | null(cLISTOPo->op_first); |
8990e307 | 1719 | |
11343788 MB |
1720 | o->op_type = type; |
1721 | o->op_ppaddr = ppaddr[type]; | |
1722 | o->op_flags |= flags; | |
79072805 | 1723 | |
11343788 MB |
1724 | o = CHECKOP(type, o); |
1725 | if (o->op_type != type) | |
1726 | return o; | |
79072805 | 1727 | |
11343788 | 1728 | if (cLISTOPo->op_children < 7) { |
79072805 | 1729 | /* XXX do we really need to do this if we're done appending?? */ |
11343788 | 1730 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 | 1731 | last = kid; |
11343788 | 1732 | cLISTOPo->op_last = last; /* in case check substituted last arg */ |
79072805 LW |
1733 | } |
1734 | ||
11343788 | 1735 | return fold_constants(o); |
79072805 LW |
1736 | } |
1737 | ||
1738 | /* List constructors */ | |
1739 | ||
1740 | OP * | |
1741 | append_elem(type, first, last) | |
1742 | I32 type; | |
1743 | OP* first; | |
1744 | OP* last; | |
1745 | { | |
1746 | if (!first) | |
1747 | return last; | |
8990e307 LW |
1748 | |
1749 | if (!last) | |
79072805 | 1750 | return first; |
8990e307 | 1751 | |
a0d0e21e LW |
1752 | if (first->op_type != type || type==OP_LIST && first->op_flags & OPf_PARENS) |
1753 | return newLISTOP(type, 0, first, last); | |
79072805 | 1754 | |
a0d0e21e LW |
1755 | if (first->op_flags & OPf_KIDS) |
1756 | ((LISTOP*)first)->op_last->op_sibling = last; | |
1757 | else { | |
1758 | first->op_flags |= OPf_KIDS; | |
1759 | ((LISTOP*)first)->op_first = last; | |
1760 | } | |
1761 | ((LISTOP*)first)->op_last = last; | |
1762 | ((LISTOP*)first)->op_children++; | |
1763 | return first; | |
79072805 LW |
1764 | } |
1765 | ||
1766 | OP * | |
1767 | append_list(type, first, last) | |
1768 | I32 type; | |
1769 | LISTOP* first; | |
1770 | LISTOP* last; | |
1771 | { | |
1772 | if (!first) | |
1773 | return (OP*)last; | |
8990e307 LW |
1774 | |
1775 | if (!last) | |
79072805 | 1776 | return (OP*)first; |
8990e307 LW |
1777 | |
1778 | if (first->op_type != type) | |
79072805 | 1779 | return prepend_elem(type, (OP*)first, (OP*)last); |
8990e307 LW |
1780 | |
1781 | if (last->op_type != type) | |
79072805 LW |
1782 | return append_elem(type, (OP*)first, (OP*)last); |
1783 | ||
1784 | first->op_last->op_sibling = last->op_first; | |
1785 | first->op_last = last->op_last; | |
1786 | first->op_children += last->op_children; | |
1787 | if (first->op_children) | |
1788 | last->op_flags |= OPf_KIDS; | |
1789 | ||
1790 | Safefree(last); | |
1791 | return (OP*)first; | |
1792 | } | |
1793 | ||
1794 | OP * | |
1795 | prepend_elem(type, first, last) | |
1796 | I32 type; | |
1797 | OP* first; | |
1798 | OP* last; | |
1799 | { | |
1800 | if (!first) | |
1801 | return last; | |
8990e307 LW |
1802 | |
1803 | if (!last) | |
79072805 | 1804 | return first; |
8990e307 LW |
1805 | |
1806 | if (last->op_type == type) { | |
1807 | if (type == OP_LIST) { /* already a PUSHMARK there */ | |
1808 | first->op_sibling = ((LISTOP*)last)->op_first->op_sibling; | |
1809 | ((LISTOP*)last)->op_first->op_sibling = first; | |
1810 | } | |
1811 | else { | |
1812 | if (!(last->op_flags & OPf_KIDS)) { | |
1813 | ((LISTOP*)last)->op_last = first; | |
1814 | last->op_flags |= OPf_KIDS; | |
1815 | } | |
1816 | first->op_sibling = ((LISTOP*)last)->op_first; | |
1817 | ((LISTOP*)last)->op_first = first; | |
79072805 | 1818 | } |
79072805 LW |
1819 | ((LISTOP*)last)->op_children++; |
1820 | return last; | |
1821 | } | |
1822 | ||
1823 | return newLISTOP(type, 0, first, last); | |
1824 | } | |
1825 | ||
1826 | /* Constructors */ | |
1827 | ||
1828 | OP * | |
1829 | newNULLLIST() | |
1830 | { | |
8990e307 LW |
1831 | return newOP(OP_STUB, 0); |
1832 | } | |
1833 | ||
1834 | OP * | |
11343788 MB |
1835 | force_list(o) |
1836 | OP *o; | |
8990e307 | 1837 | { |
11343788 MB |
1838 | if (!o || o->op_type != OP_LIST) |
1839 | o = newLISTOP(OP_LIST, 0, o, Nullop); | |
1840 | null(o); | |
1841 | return o; | |
79072805 LW |
1842 | } |
1843 | ||
1844 | OP * | |
1845 | newLISTOP(type, flags, first, last) | |
1846 | I32 type; | |
1847 | I32 flags; | |
1848 | OP* first; | |
1849 | OP* last; | |
1850 | { | |
1851 | LISTOP *listop; | |
1852 | ||
1853 | Newz(1101, listop, 1, LISTOP); | |
1854 | ||
1855 | listop->op_type = type; | |
1856 | listop->op_ppaddr = ppaddr[type]; | |
1857 | listop->op_children = (first != 0) + (last != 0); | |
1858 | listop->op_flags = flags; | |
79072805 LW |
1859 | |
1860 | if (!last && first) | |
1861 | last = first; | |
1862 | else if (!first && last) | |
1863 | first = last; | |
8990e307 LW |
1864 | else if (first) |
1865 | first->op_sibling = last; | |
79072805 LW |
1866 | listop->op_first = first; |
1867 | listop->op_last = last; | |
8990e307 LW |
1868 | if (type == OP_LIST) { |
1869 | OP* pushop; | |
1870 | pushop = newOP(OP_PUSHMARK, 0); | |
1871 | pushop->op_sibling = first; | |
1872 | listop->op_first = pushop; | |
1873 | listop->op_flags |= OPf_KIDS; | |
1874 | if (!last) | |
1875 | listop->op_last = pushop; | |
1876 | } | |
1877 | else if (listop->op_children) | |
1878 | listop->op_flags |= OPf_KIDS; | |
79072805 LW |
1879 | |
1880 | return (OP*)listop; | |
1881 | } | |
1882 | ||
1883 | OP * | |
1884 | newOP(type, flags) | |
1885 | I32 type; | |
1886 | I32 flags; | |
1887 | { | |
11343788 MB |
1888 | OP *o; |
1889 | Newz(1101, o, 1, OP); | |
1890 | o->op_type = type; | |
1891 | o->op_ppaddr = ppaddr[type]; | |
1892 | o->op_flags = flags; | |
79072805 | 1893 | |
11343788 MB |
1894 | o->op_next = o; |
1895 | o->op_private = 0 + (flags >> 8); | |
79072805 | 1896 | if (opargs[type] & OA_RETSCALAR) |
11343788 | 1897 | scalar(o); |
79072805 | 1898 | if (opargs[type] & OA_TARGET) |
11343788 MB |
1899 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
1900 | return CHECKOP(type, o); | |
79072805 LW |
1901 | } |
1902 | ||
1903 | OP * | |
1904 | newUNOP(type, flags, first) | |
1905 | I32 type; | |
1906 | I32 flags; | |
1907 | OP* first; | |
1908 | { | |
1909 | UNOP *unop; | |
1910 | ||
93a17b20 LW |
1911 | if (!first) |
1912 | first = newOP(OP_STUB, 0); | |
8990e307 LW |
1913 | if (opargs[type] & OA_MARK) |
1914 | first = force_list(first); | |
93a17b20 | 1915 | |
79072805 LW |
1916 | Newz(1101, unop, 1, UNOP); |
1917 | unop->op_type = type; | |
1918 | unop->op_ppaddr = ppaddr[type]; | |
1919 | unop->op_first = first; | |
1920 | unop->op_flags = flags | OPf_KIDS; | |
c07a80fd | 1921 | unop->op_private = 1 | (flags >> 8); |
79072805 | 1922 | |
e50aee73 | 1923 | unop = (UNOP*) CHECKOP(type, unop); |
79072805 LW |
1924 | if (unop->op_next) |
1925 | return (OP*)unop; | |
1926 | ||
a0d0e21e | 1927 | return fold_constants((OP *) unop); |
79072805 LW |
1928 | } |
1929 | ||
1930 | OP * | |
1931 | newBINOP(type, flags, first, last) | |
1932 | I32 type; | |
1933 | I32 flags; | |
1934 | OP* first; | |
1935 | OP* last; | |
1936 | { | |
1937 | BINOP *binop; | |
1938 | Newz(1101, binop, 1, BINOP); | |
1939 | ||
1940 | if (!first) | |
1941 | first = newOP(OP_NULL, 0); | |
1942 | ||
1943 | binop->op_type = type; | |
1944 | binop->op_ppaddr = ppaddr[type]; | |
1945 | binop->op_first = first; | |
1946 | binop->op_flags = flags | OPf_KIDS; | |
1947 | if (!last) { | |
1948 | last = first; | |
c07a80fd | 1949 | binop->op_private = 1 | (flags >> 8); |
79072805 LW |
1950 | } |
1951 | else { | |
c07a80fd | 1952 | binop->op_private = 2 | (flags >> 8); |
79072805 LW |
1953 | first->op_sibling = last; |
1954 | } | |
1955 | ||
e50aee73 | 1956 | binop = (BINOP*)CHECKOP(type, binop); |
79072805 LW |
1957 | if (binop->op_next) |
1958 | return (OP*)binop; | |
1959 | ||
1960 | binop->op_last = last = binop->op_first->op_sibling; | |
1961 | ||
a0d0e21e | 1962 | return fold_constants((OP *)binop); |
79072805 LW |
1963 | } |
1964 | ||
1965 | OP * | |
11343788 MB |
1966 | pmtrans(o, expr, repl) |
1967 | OP *o; | |
79072805 LW |
1968 | OP *expr; |
1969 | OP *repl; | |
1970 | { | |
79072805 LW |
1971 | SV *tstr = ((SVOP*)expr)->op_sv; |
1972 | SV *rstr = ((SVOP*)repl)->op_sv; | |
463ee0b2 LW |
1973 | STRLEN tlen; |
1974 | STRLEN rlen; | |
ec49126f | 1975 | register U8 *t = (U8*)SvPV(tstr, tlen); |
1976 | register U8 *r = (U8*)SvPV(rstr, rlen); | |
79072805 LW |
1977 | register I32 i; |
1978 | register I32 j; | |
79072805 LW |
1979 | I32 delete; |
1980 | I32 complement; | |
1981 | register short *tbl; | |
1982 | ||
11343788 MB |
1983 | tbl = (short*)cPVOPo->op_pv; |
1984 | complement = o->op_private & OPpTRANS_COMPLEMENT; | |
1985 | delete = o->op_private & OPpTRANS_DELETE; | |
1986 | /* squash = o->op_private & OPpTRANS_SQUASH; */ | |
79072805 LW |
1987 | |
1988 | if (complement) { | |
1989 | Zero(tbl, 256, short); | |
1990 | for (i = 0; i < tlen; i++) | |
ec49126f | 1991 | tbl[t[i]] = -1; |
79072805 LW |
1992 | for (i = 0, j = 0; i < 256; i++) { |
1993 | if (!tbl[i]) { | |
1994 | if (j >= rlen) { | |
1995 | if (delete) | |
1996 | tbl[i] = -2; | |
1997 | else if (rlen) | |
ec49126f | 1998 | tbl[i] = r[j-1]; |
79072805 LW |
1999 | else |
2000 | tbl[i] = i; | |
2001 | } | |
2002 | else | |
ec49126f | 2003 | tbl[i] = r[j++]; |
79072805 LW |
2004 | } |
2005 | } | |
2006 | } | |
2007 | else { | |
2008 | if (!rlen && !delete) { | |
2009 | r = t; rlen = tlen; | |
2010 | } | |
2011 | for (i = 0; i < 256; i++) | |
2012 | tbl[i] = -1; | |
2013 | for (i = 0, j = 0; i < tlen; i++,j++) { | |
2014 | if (j >= rlen) { | |
2015 | if (delete) { | |
ec49126f | 2016 | if (tbl[t[i]] == -1) |
2017 | tbl[t[i]] = -2; | |
79072805 LW |
2018 | continue; |
2019 | } | |
2020 | --j; | |
2021 | } | |
ec49126f | 2022 | if (tbl[t[i]] == -1) |
2023 | tbl[t[i]] = r[j]; | |
79072805 LW |
2024 | } |
2025 | } | |
2026 | op_free(expr); | |
2027 | op_free(repl); | |
2028 | ||
11343788 | 2029 | return o; |
79072805 LW |
2030 | } |
2031 | ||
2032 | OP * | |
2033 | newPMOP(type, flags) | |
2034 | I32 type; | |
2035 | I32 flags; | |
2036 | { | |
11343788 | 2037 | dTHR; |
79072805 LW |
2038 | PMOP *pmop; |
2039 | ||
2040 | Newz(1101, pmop, 1, PMOP); | |
2041 | pmop->op_type = type; | |
2042 | pmop->op_ppaddr = ppaddr[type]; | |
2043 | pmop->op_flags = flags; | |
c07a80fd | 2044 | pmop->op_private = 0 | (flags >> 8); |
79072805 | 2045 | |
36477c24 | 2046 | if (hints & HINT_LOCALE) |
2047 | pmop->op_pmpermflags = (pmop->op_pmflags |= PMf_LOCALE); | |
2048 | ||
79072805 | 2049 | /* link into pm list */ |
a0d0e21e | 2050 | if (type != OP_TRANS && curstash) { |
79072805 LW |
2051 | pmop->op_pmnext = HvPMROOT(curstash); |
2052 | HvPMROOT(curstash) = pmop; | |
2053 | } | |
2054 | ||
2055 | return (OP*)pmop; | |
2056 | } | |
2057 | ||
2058 | OP * | |
11343788 MB |
2059 | pmruntime(o, expr, repl) |
2060 | OP *o; | |
79072805 LW |
2061 | OP *expr; |
2062 | OP *repl; | |
2063 | { | |
2064 | PMOP *pm; | |
2065 | LOGOP *rcop; | |
2066 | ||
11343788 MB |
2067 | if (o->op_type == OP_TRANS) |
2068 | return pmtrans(o, expr, repl); | |
79072805 | 2069 | |
3e3baf6d | 2070 | hints |= HINT_BLOCK_SCOPE; |
11343788 | 2071 | pm = (PMOP*)o; |
79072805 LW |
2072 | |
2073 | if (expr->op_type == OP_CONST) { | |
463ee0b2 | 2074 | STRLEN plen; |
79072805 | 2075 | SV *pat = ((SVOP*)expr)->op_sv; |
463ee0b2 | 2076 | char *p = SvPV(pat, plen); |
11343788 | 2077 | if ((o->op_flags & OPf_SPECIAL) && strEQ(p, " ")) { |
93a17b20 | 2078 | sv_setpvn(pat, "\\s+", 3); |
463ee0b2 | 2079 | p = SvPV(pat, plen); |
79072805 LW |
2080 | pm->op_pmflags |= PMf_SKIPWHITE; |
2081 | } | |
e50aee73 | 2082 | pm->op_pmregexp = pregcomp(p, p + plen, pm); |
85e6fe83 LW |
2083 | if (strEQ("\\s+", pm->op_pmregexp->precomp)) |
2084 | pm->op_pmflags |= PMf_WHITE; | |
79072805 LW |
2085 | hoistmust(pm); |
2086 | op_free(expr); | |
2087 | } | |
2088 | else { | |
463ee0b2 LW |
2089 | if (pm->op_pmflags & PMf_KEEP) |
2090 | expr = newUNOP(OP_REGCMAYBE,0,expr); | |
2091 | ||
79072805 LW |
2092 | Newz(1101, rcop, 1, LOGOP); |
2093 | rcop->op_type = OP_REGCOMP; | |
2094 | rcop->op_ppaddr = ppaddr[OP_REGCOMP]; | |
2095 | rcop->op_first = scalar(expr); | |
2096 | rcop->op_flags |= OPf_KIDS; | |
2097 | rcop->op_private = 1; | |
11343788 | 2098 | rcop->op_other = o; |
79072805 LW |
2099 | |
2100 | /* establish postfix order */ | |
463ee0b2 LW |
2101 | if (pm->op_pmflags & PMf_KEEP) { |
2102 | LINKLIST(expr); | |
2103 | rcop->op_next = expr; | |
2104 | ((UNOP*)expr)->op_first->op_next = (OP*)rcop; | |
2105 | } | |
2106 | else { | |
2107 | rcop->op_next = LINKLIST(expr); | |
2108 | expr->op_next = (OP*)rcop; | |
2109 | } | |
79072805 | 2110 | |
11343788 | 2111 | prepend_elem(o->op_type, scalar((OP*)rcop), o); |
79072805 LW |
2112 | } |
2113 | ||
2114 | if (repl) { | |
748a9306 LW |
2115 | OP *curop; |
2116 | if (pm->op_pmflags & PMf_EVAL) | |
2117 | curop = 0; | |
2118 | else if (repl->op_type == OP_CONST) | |
2119 | curop = repl; | |
79072805 | 2120 | else { |
79072805 LW |
2121 | OP *lastop = 0; |
2122 | for (curop = LINKLIST(repl); curop!=repl; curop = LINKLIST(curop)) { | |
2123 | if (opargs[curop->op_type] & OA_DANGEROUS) { | |
2124 | if (curop->op_type == OP_GV) { | |
2125 | GV *gv = ((GVOP*)curop)->op_gv; | |
93a17b20 | 2126 | if (strchr("&`'123456789+", *GvENAME(gv))) |
79072805 LW |
2127 | break; |
2128 | } | |
2129 | else if (curop->op_type == OP_RV2CV) | |
2130 | break; | |
2131 | else if (curop->op_type == OP_RV2SV || | |
2132 | curop->op_type == OP_RV2AV || | |
2133 | curop->op_type == OP_RV2HV || | |
2134 | curop->op_type == OP_RV2GV) { | |
2135 | if (lastop && lastop->op_type != OP_GV) /*funny deref?*/ | |
2136 | break; | |
2137 | } | |
748a9306 LW |
2138 | else if (curop->op_type == OP_PADSV || |
2139 | curop->op_type == OP_PADAV || | |
2140 | curop->op_type == OP_PADHV || | |
2141 | curop->op_type == OP_PADANY) { | |
2142 | /* is okay */ | |
2143 | } | |
79072805 LW |
2144 | else |
2145 | break; | |
2146 | } | |
2147 | lastop = curop; | |
2148 | } | |
748a9306 LW |
2149 | } |
2150 | if (curop == repl) { | |
2151 | pm->op_pmflags |= PMf_CONST; /* const for long enough */ | |
4633a7c4 | 2152 | pm->op_pmpermflags |= PMf_CONST; /* const for long enough */ |
11343788 | 2153 | prepend_elem(o->op_type, scalar(repl), o); |
748a9306 LW |
2154 | } |
2155 | else { | |
2156 | Newz(1101, rcop, 1, LOGOP); | |
2157 | rcop->op_type = OP_SUBSTCONT; | |
2158 | rcop->op_ppaddr = ppaddr[OP_SUBSTCONT]; | |
2159 | rcop->op_first = scalar(repl); | |
2160 | rcop->op_flags |= OPf_KIDS; | |
2161 | rcop->op_private = 1; | |
11343788 | 2162 | rcop->op_other = o; |
748a9306 LW |
2163 | |
2164 | /* establish postfix order */ | |
2165 | rcop->op_next = LINKLIST(repl); | |
2166 | repl->op_next = (OP*)rcop; | |
2167 | ||
2168 | pm->op_pmreplroot = scalar((OP*)rcop); | |
2169 | pm->op_pmreplstart = LINKLIST(rcop); | |
2170 | rcop->op_next = 0; | |
79072805 LW |
2171 | } |
2172 | } | |
2173 | ||
2174 | return (OP*)pm; | |
2175 | } | |
2176 | ||
2177 | OP * | |
2178 | newSVOP(type, flags, sv) | |
2179 | I32 type; | |
2180 | I32 flags; | |
2181 | SV *sv; | |
2182 | { | |
2183 | SVOP *svop; | |
2184 | Newz(1101, svop, 1, SVOP); | |
2185 | svop->op_type = type; | |
2186 | svop->op_ppaddr = ppaddr[type]; | |
2187 | svop->op_sv = sv; | |
2188 | svop->op_next = (OP*)svop; | |
2189 | svop->op_flags = flags; | |
2190 | if (opargs[type] & OA_RETSCALAR) | |
463ee0b2 | 2191 | scalar((OP*)svop); |
79072805 | 2192 | if (opargs[type] & OA_TARGET) |
ed6116ce | 2193 | svop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2194 | return CHECKOP(type, svop); |
79072805 LW |
2195 | } |
2196 | ||
2197 | OP * | |
2198 | newGVOP(type, flags, gv) | |
2199 | I32 type; | |
2200 | I32 flags; | |
2201 | GV *gv; | |
2202 | { | |
11343788 | 2203 | dTHR; |
79072805 LW |
2204 | GVOP *gvop; |
2205 | Newz(1101, gvop, 1, GVOP); | |
2206 | gvop->op_type = type; | |
2207 | gvop->op_ppaddr = ppaddr[type]; | |
8990e307 | 2208 | gvop->op_gv = (GV*)SvREFCNT_inc(gv); |
79072805 LW |
2209 | gvop->op_next = (OP*)gvop; |
2210 | gvop->op_flags = flags; | |
2211 | if (opargs[type] & OA_RETSCALAR) | |
463ee0b2 | 2212 | scalar((OP*)gvop); |
79072805 | 2213 | if (opargs[type] & OA_TARGET) |
ed6116ce | 2214 | gvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2215 | return CHECKOP(type, gvop); |
79072805 LW |
2216 | } |
2217 | ||
2218 | OP * | |
2219 | newPVOP(type, flags, pv) | |
2220 | I32 type; | |
2221 | I32 flags; | |
2222 | char *pv; | |
2223 | { | |
2224 | PVOP *pvop; | |
2225 | Newz(1101, pvop, 1, PVOP); | |
2226 | pvop->op_type = type; | |
2227 | pvop->op_ppaddr = ppaddr[type]; | |
2228 | pvop->op_pv = pv; | |
2229 | pvop->op_next = (OP*)pvop; | |
2230 | pvop->op_flags = flags; | |
2231 | if (opargs[type] & OA_RETSCALAR) | |
463ee0b2 | 2232 | scalar((OP*)pvop); |
79072805 | 2233 | if (opargs[type] & OA_TARGET) |
ed6116ce | 2234 | pvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2235 | return CHECKOP(type, pvop); |
79072805 LW |
2236 | } |
2237 | ||
79072805 | 2238 | void |
11343788 MB |
2239 | package(o) |
2240 | OP *o; | |
79072805 | 2241 | { |
11343788 | 2242 | dTHR; |
93a17b20 | 2243 | SV *sv; |
79072805 LW |
2244 | |
2245 | save_hptr(&curstash); | |
2246 | save_item(curstname); | |
11343788 | 2247 | if (o) { |
463ee0b2 LW |
2248 | STRLEN len; |
2249 | char *name; | |
11343788 | 2250 | sv = cSVOPo->op_sv; |
463ee0b2 | 2251 | name = SvPV(sv, len); |
b1cb66bf | 2252 | curstash = gv_stashpvn(name,len,TRUE); |
463ee0b2 | 2253 | sv_setpvn(curstname, name, len); |
11343788 | 2254 | op_free(o); |
93a17b20 LW |
2255 | } |
2256 | else { | |
2257 | sv_setpv(curstname,"<none>"); | |
2258 | curstash = Nullhv; | |
2259 | } | |
79072805 | 2260 | copline = NOLINE; |
8990e307 | 2261 | expect = XSTATE; |
79072805 LW |
2262 | } |
2263 | ||
85e6fe83 | 2264 | void |
b1cb66bf | 2265 | utilize(aver, floor, version, id, arg) |
85e6fe83 | 2266 | int aver; |
c07a80fd | 2267 | I32 floor; |
b1cb66bf | 2268 | OP *version; |
85e6fe83 LW |
2269 | OP *id; |
2270 | OP *arg; | |
2271 | { | |
a0d0e21e LW |
2272 | OP *pack; |
2273 | OP *meth; | |
2274 | OP *rqop; | |
2275 | OP *imop; | |
b1cb66bf | 2276 | OP *veop; |
85e6fe83 | 2277 | |
a0d0e21e LW |
2278 | if (id->op_type != OP_CONST) |
2279 | croak("Module name must be constant"); | |
85e6fe83 | 2280 | |
b1cb66bf | 2281 | veop = Nullop; |
2282 | ||
2283 | if(version != Nullop) { | |
2284 | SV *vesv = ((SVOP*)version)->op_sv; | |
2285 | ||
2286 | if (arg == Nullop && !SvNIOK(vesv)) { | |
2287 | arg = version; | |
2288 | } | |
2289 | else { | |
2290 | OP *pack; | |
2291 | OP *meth; | |
2292 | ||
2293 | if (version->op_type != OP_CONST || !SvNIOK(vesv)) | |
2294 | croak("Version number must be constant number"); | |
2295 | ||
2296 | /* Make copy of id so we don't free it twice */ | |
2297 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); | |
2298 | ||
2299 | /* Fake up a method call to VERSION */ | |
2300 | meth = newSVOP(OP_CONST, 0, newSVpv("VERSION", 7)); | |
2301 | veop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, | |
2302 | append_elem(OP_LIST, | |
2303 | prepend_elem(OP_LIST, pack, list(version)), | |
2304 | newUNOP(OP_METHOD, 0, meth))); | |
2305 | } | |
2306 | } | |
2307 | ||
a0d0e21e | 2308 | /* Fake up an import/unimport */ |
4633a7c4 LW |
2309 | if (arg && arg->op_type == OP_STUB) |
2310 | imop = arg; /* no import on explicit () */ | |
b1cb66bf | 2311 | else if(SvNIOK(((SVOP*)id)->op_sv)) { |
2312 | imop = Nullop; /* use 5.0; */ | |
2313 | } | |
4633a7c4 LW |
2314 | else { |
2315 | /* Make copy of id so we don't free it twice */ | |
2316 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); | |
4633a7c4 LW |
2317 | meth = newSVOP(OP_CONST, 0, |
2318 | aver | |
2319 | ? newSVpv("import", 6) | |
2320 | : newSVpv("unimport", 8) | |
2321 | ); | |
2322 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, | |
a0d0e21e LW |
2323 | append_elem(OP_LIST, |
2324 | prepend_elem(OP_LIST, pack, list(arg)), | |
2325 | newUNOP(OP_METHOD, 0, meth))); | |
4633a7c4 LW |
2326 | } |
2327 | ||
2328 | /* Fake up a require */ | |
2329 | rqop = newUNOP(OP_REQUIRE, 0, id); | |
a0d0e21e LW |
2330 | |
2331 | /* Fake up the BEGIN {}, which does its thing immediately. */ | |
c07a80fd | 2332 | newSUB(floor, |
a0d0e21e | 2333 | newSVOP(OP_CONST, 0, newSVpv("BEGIN", 5)), |
4633a7c4 | 2334 | Nullop, |
a0d0e21e | 2335 | append_elem(OP_LINESEQ, |
b1cb66bf | 2336 | append_elem(OP_LINESEQ, |
2337 | newSTATEOP(0, Nullch, rqop), | |
2338 | newSTATEOP(0, Nullch, veop)), | |
a0d0e21e | 2339 | newSTATEOP(0, Nullch, imop) )); |
85e6fe83 | 2340 | |
85e6fe83 LW |
2341 | copline = NOLINE; |
2342 | expect = XSTATE; | |
2343 | } | |
2344 | ||
79072805 LW |
2345 | OP * |
2346 | newSLICEOP(flags, subscript, listval) | |
2347 | I32 flags; | |
2348 | OP *subscript; | |
2349 | OP *listval; | |
2350 | { | |
2351 | return newBINOP(OP_LSLICE, flags, | |
8990e307 LW |
2352 | list(force_list(subscript)), |
2353 | list(force_list(listval)) ); | |
79072805 LW |
2354 | } |
2355 | ||
2356 | static I32 | |
11343788 MB |
2357 | list_assignment(o) |
2358 | register OP *o; | |
79072805 | 2359 | { |
11343788 | 2360 | if (!o) |
79072805 LW |
2361 | return TRUE; |
2362 | ||
11343788 MB |
2363 | if (o->op_type == OP_NULL && o->op_flags & OPf_KIDS) |
2364 | o = cUNOPo->op_first; | |
79072805 | 2365 | |
11343788 MB |
2366 | if (o->op_type == OP_COND_EXPR) { |
2367 | I32 t = list_assignment(cCONDOPo->op_first->op_sibling); | |
2368 | I32 f = list_assignment(cCONDOPo->op_first->op_sibling->op_sibling); | |
79072805 LW |
2369 | |
2370 | if (t && f) | |
2371 | return TRUE; | |
2372 | if (t || f) | |
2373 | yyerror("Assignment to both a list and a scalar"); | |
2374 | return FALSE; | |
2375 | } | |
2376 | ||
11343788 MB |
2377 | if (o->op_type == OP_LIST || o->op_flags & OPf_PARENS || |
2378 | o->op_type == OP_RV2AV || o->op_type == OP_RV2HV || | |
2379 | o->op_type == OP_ASLICE || o->op_type == OP_HSLICE) | |
79072805 LW |
2380 | return TRUE; |
2381 | ||
11343788 | 2382 | if (o->op_type == OP_PADAV || o->op_type == OP_PADHV) |
93a17b20 LW |
2383 | return TRUE; |
2384 | ||
11343788 | 2385 | if (o->op_type == OP_RV2SV) |
79072805 LW |
2386 | return FALSE; |
2387 | ||
2388 | return FALSE; | |
2389 | } | |
2390 | ||
2391 | OP * | |
a0d0e21e | 2392 | newASSIGNOP(flags, left, optype, right) |
79072805 LW |
2393 | I32 flags; |
2394 | OP *left; | |
a0d0e21e | 2395 | I32 optype; |
79072805 LW |
2396 | OP *right; |
2397 | { | |
11343788 | 2398 | OP *o; |
79072805 | 2399 | |
a0d0e21e LW |
2400 | if (optype) { |
2401 | if (optype == OP_ANDASSIGN || optype == OP_ORASSIGN) { | |
2402 | return newLOGOP(optype, 0, | |
2403 | mod(scalar(left), optype), | |
2404 | newUNOP(OP_SASSIGN, 0, scalar(right))); | |
2405 | } | |
2406 | else { | |
2407 | return newBINOP(optype, OPf_STACKED, | |
2408 | mod(scalar(left), optype), scalar(right)); | |
2409 | } | |
2410 | } | |
2411 | ||
79072805 | 2412 | if (list_assignment(left)) { |
463ee0b2 | 2413 | modcount = 0; |
748a9306 | 2414 | eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ |
463ee0b2 | 2415 | left = mod(left, OP_AASSIGN); |
748a9306 LW |
2416 | if (eval_start) |
2417 | eval_start = 0; | |
2418 | else { | |
a0d0e21e LW |
2419 | op_free(left); |
2420 | op_free(right); | |
2421 | return Nullop; | |
2422 | } | |
11343788 | 2423 | o = newBINOP(OP_AASSIGN, flags, |
8990e307 LW |
2424 | list(force_list(right)), |
2425 | list(force_list(left)) ); | |
11343788 | 2426 | o->op_private = 0 | (flags >> 8); |
a0d0e21e | 2427 | if (!(left->op_private & OPpLVAL_INTRO)) { |
748a9306 | 2428 | static int generation = 100; |
79072805 | 2429 | OP *curop; |
11343788 | 2430 | OP *lastop = o; |
79072805 | 2431 | generation++; |
11343788 | 2432 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
79072805 LW |
2433 | if (opargs[curop->op_type] & OA_DANGEROUS) { |
2434 | if (curop->op_type == OP_GV) { | |
2435 | GV *gv = ((GVOP*)curop)->op_gv; | |
2436 | if (gv == defgv || SvCUR(gv) == generation) | |
2437 | break; | |
2438 | SvCUR(gv) = generation; | |
2439 | } | |
748a9306 LW |
2440 | else if (curop->op_type == OP_PADSV || |
2441 | curop->op_type == OP_PADAV || | |
2442 | curop->op_type == OP_PADHV || | |
2443 | curop->op_type == OP_PADANY) { | |
2444 | SV **svp = AvARRAY(comppad_name); | |
8e07c86e | 2445 | SV *sv = svp[curop->op_targ]; |
748a9306 LW |
2446 | if (SvCUR(sv) == generation) |
2447 | break; | |
2448 | SvCUR(sv) = generation; /* (SvCUR not used any more) */ | |
2449 | } | |
79072805 LW |
2450 | else if (curop->op_type == OP_RV2CV) |
2451 | break; | |
2452 | else if (curop->op_type == OP_RV2SV || | |
2453 | curop->op_type == OP_RV2AV || | |
2454 | curop->op_type == OP_RV2HV || | |
2455 | curop->op_type == OP_RV2GV) { | |
2456 | if (lastop->op_type != OP_GV) /* funny deref? */ | |
2457 | break; | |
2458 | } | |
2459 | else | |
2460 | break; | |
2461 | } | |
2462 | lastop = curop; | |
2463 | } | |
11343788 MB |
2464 | if (curop != o) |
2465 | o->op_private = OPpASSIGN_COMMON; | |
79072805 | 2466 | } |
c07a80fd | 2467 | if (right && right->op_type == OP_SPLIT) { |
2468 | OP* tmpop; | |
2469 | if ((tmpop = ((LISTOP*)right)->op_first) && | |
2470 | tmpop->op_type == OP_PUSHRE) | |
2471 | { | |
2472 | PMOP *pm = (PMOP*)tmpop; | |
2473 | if (left->op_type == OP_RV2AV && | |
2474 | !(left->op_private & OPpLVAL_INTRO) && | |
11343788 | 2475 | !(o->op_private & OPpASSIGN_COMMON) ) |
c07a80fd | 2476 | { |
2477 | tmpop = ((UNOP*)left)->op_first; | |
2478 | if (tmpop->op_type == OP_GV && !pm->op_pmreplroot) { | |
2479 | pm->op_pmreplroot = (OP*)((GVOP*)tmpop)->op_gv; | |
2480 | pm->op_pmflags |= PMf_ONCE; | |
11343788 | 2481 | tmpop = cUNOPo->op_first; /* to list (nulled) */ |
c07a80fd | 2482 | tmpop = ((UNOP*)tmpop)->op_first; /* to pushmark */ |
2483 | tmpop->op_sibling = Nullop; /* don't free split */ | |
2484 | right->op_next = tmpop->op_next; /* fix starting loc */ | |
11343788 | 2485 | op_free(o); /* blow off assign */ |
54310121 | 2486 | right->op_flags &= ~OPf_WANT; |
a5f75d66 | 2487 | /* "I don't know and I don't care." */ |
c07a80fd | 2488 | return right; |
2489 | } | |
2490 | } | |
2491 | else { | |
2492 | if (modcount < 10000 && | |
2493 | ((LISTOP*)right)->op_last->op_type == OP_CONST) | |
2494 | { | |
2495 | SV *sv = ((SVOP*)((LISTOP*)right)->op_last)->op_sv; | |
2496 | if (SvIVX(sv) == 0) | |
2497 | sv_setiv(sv, modcount+1); | |
2498 | } | |
2499 | } | |
2500 | } | |
2501 | } | |
11343788 | 2502 | return o; |
79072805 LW |
2503 | } |
2504 | if (!right) | |
2505 | right = newOP(OP_UNDEF, 0); | |
2506 | if (right->op_type == OP_READLINE) { | |
2507 | right->op_flags |= OPf_STACKED; | |
463ee0b2 | 2508 | return newBINOP(OP_NULL, flags, mod(scalar(left), OP_SASSIGN), scalar(right)); |
79072805 | 2509 | } |
a0d0e21e | 2510 | else { |
748a9306 | 2511 | eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ |
11343788 | 2512 | o = newBINOP(OP_SASSIGN, flags, |
463ee0b2 | 2513 | scalar(right), mod(scalar(left), OP_SASSIGN) ); |
748a9306 LW |
2514 | if (eval_start) |
2515 | eval_start = 0; | |
2516 | else { | |
11343788 | 2517 | op_free(o); |
a0d0e21e LW |
2518 | return Nullop; |
2519 | } | |
2520 | } | |
11343788 | 2521 | return o; |
79072805 LW |
2522 | } |
2523 | ||
2524 | OP * | |
11343788 | 2525 | newSTATEOP(flags, label, o) |
79072805 LW |
2526 | I32 flags; |
2527 | char *label; | |
11343788 | 2528 | OP *o; |
79072805 | 2529 | { |
11343788 | 2530 | dTHR; |
bbce6d69 | 2531 | U32 seq = intro_my(); |
79072805 LW |
2532 | register COP *cop; |
2533 | ||
2534 | Newz(1101, cop, 1, COP); | |
8990e307 LW |
2535 | if (perldb && curcop->cop_line && curstash != debstash) { |
2536 | cop->op_type = OP_DBSTATE; | |
2537 | cop->op_ppaddr = ppaddr[ OP_DBSTATE ]; | |
2538 | } | |
2539 | else { | |
2540 | cop->op_type = OP_NEXTSTATE; | |
2541 | cop->op_ppaddr = ppaddr[ OP_NEXTSTATE ]; | |
2542 | } | |
79072805 | 2543 | cop->op_flags = flags; |
c07a80fd | 2544 | cop->op_private = 0 | (flags >> 8); |
ff0cee69 | 2545 | #ifdef NATIVE_HINTS |
2546 | cop->op_private |= NATIVE_HINTS; | |
2547 | #endif | |
79072805 LW |
2548 | cop->op_next = (OP*)cop; |
2549 | ||
463ee0b2 LW |
2550 | if (label) { |
2551 | cop->cop_label = label; | |
85e6fe83 | 2552 | hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 2553 | } |
bbce6d69 | 2554 | cop->cop_seq = seq; |
a0d0e21e | 2555 | cop->cop_arybase = curcop->cop_arybase; |
79072805 LW |
2556 | |
2557 | if (copline == NOLINE) | |
2558 | cop->cop_line = curcop->cop_line; | |
2559 | else { | |
2560 | cop->cop_line = copline; | |
2561 | copline = NOLINE; | |
2562 | } | |
44a8e56a | 2563 | cop->cop_filegv = (GV*)SvREFCNT_inc(curcop->cop_filegv); |
79072805 LW |
2564 | cop->cop_stash = curstash; |
2565 | ||
8990e307 | 2566 | if (perldb && curstash != debstash) { |
93a17b20 LW |
2567 | SV **svp = av_fetch(GvAV(curcop->cop_filegv),(I32)cop->cop_line, FALSE); |
2568 | if (svp && *svp != &sv_undef && !SvIOK(*svp)) { | |
a0d0e21e | 2569 | (void)SvIOK_on(*svp); |
a5f75d66 | 2570 | SvIVX(*svp) = 1; |
93a17b20 LW |
2571 | SvSTASH(*svp) = (HV*)cop; |
2572 | } | |
2573 | } | |
2574 | ||
11343788 | 2575 | return prepend_elem(OP_LINESEQ, (OP*)cop, o); |
79072805 LW |
2576 | } |
2577 | ||
bbce6d69 | 2578 | /* "Introduce" my variables to visible status. */ |
2579 | U32 | |
2580 | intro_my() | |
2581 | { | |
2582 | SV **svp; | |
2583 | SV *sv; | |
2584 | I32 i; | |
2585 | ||
2586 | if (! min_intro_pending) | |
2587 | return cop_seqmax; | |
2588 | ||
2589 | svp = AvARRAY(comppad_name); | |
2590 | for (i = min_intro_pending; i <= max_intro_pending; i++) { | |
2591 | if ((sv = svp[i]) && sv != &sv_undef && !SvIVX(sv)) { | |
2592 | SvIVX(sv) = 999999999; /* Don't know scope end yet. */ | |
2593 | SvNVX(sv) = (double)cop_seqmax; | |
2594 | } | |
2595 | } | |
2596 | min_intro_pending = 0; | |
2597 | comppad_name_fill = max_intro_pending; /* Needn't search higher */ | |
2598 | return cop_seqmax++; | |
2599 | } | |
2600 | ||
79072805 LW |
2601 | OP * |
2602 | newLOGOP(type, flags, first, other) | |
2603 | I32 type; | |
2604 | I32 flags; | |
2605 | OP* first; | |
2606 | OP* other; | |
2607 | { | |
11343788 | 2608 | dTHR; |
79072805 | 2609 | LOGOP *logop; |
11343788 | 2610 | OP *o; |
79072805 | 2611 | |
a0d0e21e LW |
2612 | if (type == OP_XOR) /* Not short circuit, but here by precedence. */ |
2613 | return newBINOP(type, flags, scalar(first), scalar(other)); | |
2614 | ||
8990e307 | 2615 | scalarboolean(first); |
79072805 LW |
2616 | /* optimize "!a && b" to "a || b", and "!a || b" to "a && b" */ |
2617 | if (first->op_type == OP_NOT && (first->op_flags & OPf_SPECIAL)) { | |
2618 | if (type == OP_AND || type == OP_OR) { | |
2619 | if (type == OP_AND) | |
2620 | type = OP_OR; | |
2621 | else | |
2622 | type = OP_AND; | |
11343788 MB |
2623 | o = first; |
2624 | first = cUNOPo->op_first; | |
2625 | if (o->op_next) | |
2626 | first->op_next = o->op_next; | |
2627 | cUNOPo->op_first = Nullop; | |
2628 | op_free(o); | |
79072805 LW |
2629 | } |
2630 | } | |
2631 | if (first->op_type == OP_CONST) { | |
93a17b20 | 2632 | if (dowarn && (first->op_private & OPpCONST_BARE)) |
c07a80fd | 2633 | warn("Probable precedence problem on %s", op_desc[type]); |
79072805 LW |
2634 | if ((type == OP_AND) == (SvTRUE(((SVOP*)first)->op_sv))) { |
2635 | op_free(first); | |
2636 | return other; | |
2637 | } | |
2638 | else { | |
2639 | op_free(other); | |
2640 | return first; | |
2641 | } | |
2642 | } | |
2643 | else if (first->op_type == OP_WANTARRAY) { | |
2644 | if (type == OP_AND) | |
2645 | list(other); | |
2646 | else | |
2647 | scalar(other); | |
2648 | } | |
a6006777 | 2649 | else if (dowarn && (first->op_flags & OPf_KIDS)) { |
2650 | OP *k1 = ((UNOP*)first)->op_first; | |
2651 | OP *k2 = k1->op_sibling; | |
2652 | OPCODE warnop = 0; | |
2653 | switch (first->op_type) | |
2654 | { | |
2655 | case OP_NULL: | |
2656 | if (k2 && k2->op_type == OP_READLINE | |
2657 | && (k2->op_flags & OPf_STACKED) | |
2658 | && (k1->op_type == OP_RV2SV || k1->op_type == OP_PADSV)) | |
2659 | warnop = k2->op_type; | |
2660 | break; | |
2661 | ||
2662 | case OP_SASSIGN: | |
68dc0745 | 2663 | if (k1->op_type == OP_READDIR |
2664 | || k1->op_type == OP_GLOB | |
2665 | || k1->op_type == OP_EACH) | |
a6006777 | 2666 | warnop = k1->op_type; |
2667 | break; | |
2668 | } | |
8ebc5c01 | 2669 | if (warnop) { |
2670 | line_t oldline = curcop->cop_line; | |
2671 | curcop->cop_line = copline; | |
68dc0745 | 2672 | warn("Value of %s%s can be \"0\"; test with defined()", |
2673 | op_desc[warnop], | |
2674 | ((warnop == OP_READLINE || warnop == OP_GLOB) | |
2675 | ? " construct" : "() operator")); | |
2676 | curcop->cop_line = oldline; | |
8ebc5c01 | 2677 | } |
a6006777 | 2678 | } |
79072805 LW |
2679 | |
2680 | if (!other) | |
2681 | return first; | |
2682 | ||
a0d0e21e LW |
2683 | if (type == OP_ANDASSIGN || type == OP_ORASSIGN) |
2684 | other->op_private |= OPpASSIGN_BACKWARDS; /* other is an OP_SASSIGN */ | |
2685 | ||
79072805 LW |
2686 | Newz(1101, logop, 1, LOGOP); |
2687 | ||
2688 | logop->op_type = type; | |
2689 | logop->op_ppaddr = ppaddr[type]; | |
2690 | logop->op_first = first; | |
2691 | logop->op_flags = flags | OPf_KIDS; | |
2692 | logop->op_other = LINKLIST(other); | |
c07a80fd | 2693 | logop->op_private = 1 | (flags >> 8); |
79072805 LW |
2694 | |
2695 | /* establish postfix order */ | |
2696 | logop->op_next = LINKLIST(first); | |
2697 | first->op_next = (OP*)logop; | |
2698 | first->op_sibling = other; | |
2699 | ||
11343788 MB |
2700 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
2701 | other->op_next = o; | |
79072805 | 2702 | |
11343788 | 2703 | return o; |
79072805 LW |
2704 | } |
2705 | ||
2706 | OP * | |
b1cb66bf | 2707 | newCONDOP(flags, first, trueop, falseop) |
79072805 LW |
2708 | I32 flags; |
2709 | OP* first; | |
b1cb66bf | 2710 | OP* trueop; |
2711 | OP* falseop; | |
79072805 | 2712 | { |
11343788 | 2713 | dTHR; |
79072805 | 2714 | CONDOP *condop; |
11343788 | 2715 | OP *o; |
79072805 | 2716 | |
b1cb66bf | 2717 | if (!falseop) |
2718 | return newLOGOP(OP_AND, 0, first, trueop); | |
2719 | if (!trueop) | |
2720 | return newLOGOP(OP_OR, 0, first, falseop); | |
79072805 | 2721 | |
8990e307 | 2722 | scalarboolean(first); |
79072805 LW |
2723 | if (first->op_type == OP_CONST) { |
2724 | if (SvTRUE(((SVOP*)first)->op_sv)) { | |
2725 | op_free(first); | |
b1cb66bf | 2726 | op_free(falseop); |
2727 | return trueop; | |
79072805 LW |
2728 | } |
2729 | else { | |
2730 | op_free(first); | |
b1cb66bf | 2731 | op_free(trueop); |
2732 | return falseop; | |
79072805 LW |
2733 | } |
2734 | } | |
2735 | else if (first->op_type == OP_WANTARRAY) { | |
b1cb66bf | 2736 | list(trueop); |
2737 | scalar(falseop); | |
79072805 LW |
2738 | } |
2739 | Newz(1101, condop, 1, CONDOP); | |
2740 | ||
2741 | condop->op_type = OP_COND_EXPR; | |
2742 | condop->op_ppaddr = ppaddr[OP_COND_EXPR]; | |
2743 | condop->op_first = first; | |
2744 | condop->op_flags = flags | OPf_KIDS; | |
b1cb66bf | 2745 | condop->op_true = LINKLIST(trueop); |
2746 | condop->op_false = LINKLIST(falseop); | |
c07a80fd | 2747 | condop->op_private = 1 | (flags >> 8); |
79072805 LW |
2748 | |
2749 | /* establish postfix order */ | |
2750 | condop->op_next = LINKLIST(first); | |
2751 | first->op_next = (OP*)condop; | |
2752 | ||
b1cb66bf | 2753 | first->op_sibling = trueop; |
2754 | trueop->op_sibling = falseop; | |
11343788 | 2755 | o = newUNOP(OP_NULL, 0, (OP*)condop); |
79072805 | 2756 | |
5dc0d613 MB |
2757 | trueop->op_next = o; |
2758 | falseop->op_next = o; | |
79072805 | 2759 | |
11343788 | 2760 | return o; |
79072805 LW |
2761 | } |
2762 | ||
2763 | OP * | |
2764 | newRANGE(flags, left, right) | |
2765 | I32 flags; | |
2766 | OP *left; | |
2767 | OP *right; | |
2768 | { | |
b35b2403 | 2769 | dTHR; |
79072805 LW |
2770 | CONDOP *condop; |
2771 | OP *flip; | |
2772 | OP *flop; | |
11343788 | 2773 | OP *o; |
79072805 LW |
2774 | |
2775 | Newz(1101, condop, 1, CONDOP); | |
2776 | ||
2777 | condop->op_type = OP_RANGE; | |
2778 | condop->op_ppaddr = ppaddr[OP_RANGE]; | |
2779 | condop->op_first = left; | |
2780 | condop->op_flags = OPf_KIDS; | |
2781 | condop->op_true = LINKLIST(left); | |
2782 | condop->op_false = LINKLIST(right); | |
c07a80fd | 2783 | condop->op_private = 1 | (flags >> 8); |
79072805 LW |
2784 | |
2785 | left->op_sibling = right; | |
2786 | ||
2787 | condop->op_next = (OP*)condop; | |
2788 | flip = newUNOP(OP_FLIP, flags, (OP*)condop); | |
2789 | flop = newUNOP(OP_FLOP, 0, flip); | |
11343788 | 2790 | o = newUNOP(OP_NULL, 0, flop); |
79072805 LW |
2791 | linklist(flop); |
2792 | ||
2793 | left->op_next = flip; | |
2794 | right->op_next = flop; | |
2795 | ||
ed6116ce | 2796 | condop->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 | 2797 | sv_upgrade(PAD_SV(condop->op_targ), SVt_PVNV); |
ed6116ce | 2798 | flip->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 LW |
2799 | sv_upgrade(PAD_SV(flip->op_targ), SVt_PVNV); |
2800 | ||
2801 | flip->op_private = left->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
2802 | flop->op_private = right->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
2803 | ||
11343788 | 2804 | flip->op_next = o; |
79072805 | 2805 | if (!flip->op_private || !flop->op_private) |
11343788 | 2806 | linklist(o); /* blow off optimizer unless constant */ |
79072805 | 2807 | |
11343788 | 2808 | return o; |
79072805 LW |
2809 | } |
2810 | ||
2811 | OP * | |
2812 | newLOOPOP(flags, debuggable, expr, block) | |
2813 | I32 flags; | |
2814 | I32 debuggable; | |
2815 | OP *expr; | |
2816 | OP *block; | |
2817 | { | |
11343788 | 2818 | dTHR; |
463ee0b2 | 2819 | OP* listop; |
11343788 | 2820 | OP* o; |
463ee0b2 | 2821 | int once = block && block->op_flags & OPf_SPECIAL && |
a0d0e21e | 2822 | (block->op_type == OP_ENTERSUB || block->op_type == OP_NULL); |
93a17b20 | 2823 | |
463ee0b2 LW |
2824 | if (expr) { |
2825 | if (once && expr->op_type == OP_CONST && !SvTRUE(((SVOP*)expr)->op_sv)) | |
2826 | return block; /* do {} while 0 does once */ | |
774d564b | 2827 | if (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB) { |
2828 | expr = newUNOP(OP_DEFINED, 0, | |
2829 | newASSIGNOP(0, newSVREF(newGVOP(OP_GV, 0, defgv)), 0, expr) ); | |
2830 | } | |
463ee0b2 | 2831 | } |
93a17b20 | 2832 | |
8990e307 | 2833 | listop = append_elem(OP_LINESEQ, block, newOP(OP_UNSTACK, 0)); |
11343788 | 2834 | o = newLOGOP(OP_AND, 0, expr, listop); |
463ee0b2 | 2835 | |
11343788 | 2836 | ((LISTOP*)listop)->op_last->op_next = LINKLIST(o); |
79072805 | 2837 | |
11343788 MB |
2838 | if (once && o != listop) |
2839 | o->op_next = ((LOGOP*)cUNOPo->op_first)->op_other; | |
79072805 | 2840 | |
11343788 MB |
2841 | if (o == listop) |
2842 | o = newUNOP(OP_NULL, 0, o); /* or do {} while 1 loses outer block */ | |
748a9306 | 2843 | |
11343788 MB |
2844 | o->op_flags |= flags; |
2845 | o = scope(o); | |
2846 | o->op_flags |= OPf_SPECIAL; /* suppress POPBLOCK curpm restoration*/ | |
2847 | return o; | |
79072805 LW |
2848 | } |
2849 | ||
2850 | OP * | |
2851 | newWHILEOP(flags, debuggable, loop, expr, block, cont) | |
2852 | I32 flags; | |
2853 | I32 debuggable; | |
2854 | LOOP *loop; | |
2855 | OP *expr; | |
2856 | OP *block; | |
2857 | OP *cont; | |
2858 | { | |
11343788 | 2859 | dTHR; |
79072805 LW |
2860 | OP *redo; |
2861 | OP *next = 0; | |
2862 | OP *listop; | |
11343788 | 2863 | OP *o; |
79072805 LW |
2864 | OP *condop; |
2865 | ||
748a9306 LW |
2866 | if (expr && (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB)) { |
2867 | expr = newUNOP(OP_DEFINED, 0, | |
2868 | newASSIGNOP(0, newSVREF(newGVOP(OP_GV, 0, defgv)), 0, expr) ); | |
2869 | } | |
79072805 LW |
2870 | |
2871 | if (!block) | |
2872 | block = newOP(OP_NULL, 0); | |
2873 | ||
2874 | if (cont) | |
2875 | next = LINKLIST(cont); | |
2876 | if (expr) | |
2877 | cont = append_elem(OP_LINESEQ, cont, newOP(OP_UNSTACK, 0)); | |
2878 | ||
463ee0b2 | 2879 | listop = append_list(OP_LINESEQ, (LISTOP*)block, (LISTOP*)cont); |
79072805 LW |
2880 | redo = LINKLIST(listop); |
2881 | ||
2882 | if (expr) { | |
11343788 MB |
2883 | o = newLOGOP(OP_AND, 0, expr, scalar(listop)); |
2884 | if (o == expr && o->op_type == OP_CONST && !SvTRUE(cSVOPo->op_sv)) { | |
85e6fe83 | 2885 | op_free(expr); /* oops, it's a while (0) */ |
463ee0b2 LW |
2886 | op_free((OP*)loop); |
2887 | return Nullop; /* (listop already freed by newLOGOP) */ | |
2888 | } | |
79072805 | 2889 | ((LISTOP*)listop)->op_last->op_next = condop = |
11343788 | 2890 | (o == listop ? redo : LINKLIST(o)); |
79072805 LW |
2891 | if (!next) |
2892 | next = condop; | |
2893 | } | |
2894 | else | |
11343788 | 2895 | o = listop; |
79072805 LW |
2896 | |
2897 | if (!loop) { | |
2898 | Newz(1101,loop,1,LOOP); | |
2899 | loop->op_type = OP_ENTERLOOP; | |
2900 | loop->op_ppaddr = ppaddr[OP_ENTERLOOP]; | |
2901 | loop->op_private = 0; | |
2902 | loop->op_next = (OP*)loop; | |
2903 | } | |
2904 | ||
11343788 | 2905 | o = newBINOP(OP_LEAVELOOP, 0, (OP*)loop, o); |
79072805 LW |
2906 | |
2907 | loop->op_redoop = redo; | |
11343788 | 2908 | loop->op_lastop = o; |
79072805 LW |
2909 | |
2910 | if (next) | |
2911 | loop->op_nextop = next; | |
2912 | else | |
11343788 | 2913 | loop->op_nextop = o; |
79072805 | 2914 | |
11343788 MB |
2915 | o->op_flags |= flags; |
2916 | o->op_private |= (flags >> 8); | |
2917 | return o; | |
79072805 LW |
2918 | } |
2919 | ||
2920 | OP * | |
a0d0e21e | 2921 | #ifndef CAN_PROTOTYPE |
79072805 LW |
2922 | newFOROP(flags,label,forline,sv,expr,block,cont) |
2923 | I32 flags; | |
2924 | char *label; | |
2925 | line_t forline; | |
2926 | OP* sv; | |
2927 | OP* expr; | |
2928 | OP*block; | |
2929 | OP*cont; | |
8990e307 LW |
2930 | #else |
2931 | newFOROP(I32 flags,char *label,line_t forline,OP *sv,OP *expr,OP *block,OP *cont) | |
a0d0e21e | 2932 | #endif /* CAN_PROTOTYPE */ |
79072805 LW |
2933 | { |
2934 | LOOP *loop; | |
85e6fe83 | 2935 | int padoff = 0; |
4633a7c4 | 2936 | I32 iterflags = 0; |
79072805 LW |
2937 | |
2938 | copline = forline; | |
2939 | if (sv) { | |
85e6fe83 | 2940 | if (sv->op_type == OP_RV2SV) { /* symbol table variable */ |
748a9306 LW |
2941 | sv->op_type = OP_RV2GV; |
2942 | sv->op_ppaddr = ppaddr[OP_RV2GV]; | |
79072805 | 2943 | } |
85e6fe83 LW |
2944 | else if (sv->op_type == OP_PADSV) { /* private variable */ |
2945 | padoff = sv->op_targ; | |
2946 | op_free(sv); | |
2947 | sv = Nullop; | |
2948 | } | |
79072805 | 2949 | else |
c07a80fd | 2950 | croak("Can't use %s for loop variable", op_desc[sv->op_type]); |
79072805 LW |
2951 | } |
2952 | else { | |
2953 | sv = newGVOP(OP_GV, 0, defgv); | |
2954 | } | |
5f05dabc | 2955 | if (expr->op_type == OP_RV2AV || expr->op_type == OP_PADAV) { |
4633a7c4 LW |
2956 | expr = scalar(ref(expr, OP_ITER)); |
2957 | iterflags |= OPf_STACKED; | |
2958 | } | |
2959 | loop = (LOOP*)list(convert(OP_ENTERITER, iterflags, | |
a0d0e21e LW |
2960 | append_elem(OP_LIST, mod(force_list(expr), OP_GREPSTART), |
2961 | scalar(sv)))); | |
85e6fe83 LW |
2962 | assert(!loop->op_next); |
2963 | Renew(loop, 1, LOOP); | |
2964 | loop->op_targ = padoff; | |
2965 | return newSTATEOP(0, label, newWHILEOP(flags, 1, loop, | |
2966 | newOP(OP_ITER, 0), block, cont)); | |
79072805 LW |
2967 | } |
2968 | ||
8990e307 LW |
2969 | OP* |
2970 | newLOOPEX(type, label) | |
2971 | I32 type; | |
2972 | OP* label; | |
2973 | { | |
11343788 MB |
2974 | dTHR; |
2975 | OP *o; | |
8990e307 | 2976 | if (type != OP_GOTO || label->op_type == OP_CONST) { |
11343788 | 2977 | o = newPVOP(type, 0, savepv( |
a0d0e21e LW |
2978 | label->op_type == OP_CONST |
2979 | ? SvPVx(((SVOP*)label)->op_sv, na) | |
2980 | : "" )); | |
8990e307 LW |
2981 | op_free(label); |
2982 | } | |
2983 | else { | |
a0d0e21e LW |
2984 | if (label->op_type == OP_ENTERSUB) |
2985 | label = newUNOP(OP_REFGEN, 0, mod(label, OP_REFGEN)); | |
11343788 | 2986 | o = newUNOP(type, OPf_STACKED, label); |
8990e307 | 2987 | } |
85e6fe83 | 2988 | hints |= HINT_BLOCK_SCOPE; |
11343788 | 2989 | return o; |
8990e307 LW |
2990 | } |
2991 | ||
79072805 | 2992 | void |
85e6fe83 | 2993 | cv_undef(cv) |
79072805 LW |
2994 | CV *cv; |
2995 | { | |
11343788 MB |
2996 | dTHR; |
2997 | #ifdef USE_THREADS | |
e858de61 MB |
2998 | if (CvMUTEXP(cv)) { |
2999 | MUTEX_DESTROY(CvMUTEXP(cv)); | |
3000 | Safefree(CvMUTEXP(cv)); | |
3001 | CvMUTEXP(cv) = 0; | |
3002 | } | |
11343788 MB |
3003 | #endif /* USE_THREADS */ |
3004 | ||
a0d0e21e | 3005 | if (!CvXSUB(cv) && CvROOT(cv)) { |
11343788 MB |
3006 | #ifdef USE_THREADS |
3007 | if (CvDEPTH(cv) || (CvOWNER(cv) && CvOWNER(cv) != thr)) | |
3008 | croak("Can't undef active subroutine"); | |
3009 | #else | |
a0d0e21e LW |
3010 | if (CvDEPTH(cv)) |
3011 | croak("Can't undef active subroutine"); | |
11343788 | 3012 | #endif /* USE_THREADS */ |
8990e307 | 3013 | ENTER; |
a0d0e21e LW |
3014 | |
3015 | SAVESPTR(curpad); | |
3016 | curpad = 0; | |
3017 | ||
a5f75d66 | 3018 | if (!CvCLONED(cv)) |
748a9306 | 3019 | op_free(CvROOT(cv)); |
79072805 | 3020 | CvROOT(cv) = Nullop; |
8990e307 | 3021 | LEAVE; |
79072805 | 3022 | } |
1d5db326 | 3023 | SvPOK_off((SV*)cv); /* forget prototype */ |
44a8e56a | 3024 | CvFLAGS(cv) = 0; |
8e07c86e AD |
3025 | SvREFCNT_dec(CvGV(cv)); |
3026 | CvGV(cv) = Nullgv; | |
3027 | SvREFCNT_dec(CvOUTSIDE(cv)); | |
3028 | CvOUTSIDE(cv) = Nullcv; | |
3029 | if (CvPADLIST(cv)) { | |
8ebc5c01 | 3030 | /* may be during global destruction */ |
3031 | if (SvREFCNT(CvPADLIST(cv))) { | |
3032 | I32 i = AvFILL(CvPADLIST(cv)); | |
3033 | while (i >= 0) { | |
3034 | SV** svp = av_fetch(CvPADLIST(cv), i--, FALSE); | |
46fc3d4c | 3035 | SV* sv = svp ? *svp : Nullsv; |
3036 | if (!sv) | |
3037 | continue; | |
3038 | if (sv == (SV*)comppad_name) | |
3039 | comppad_name = Nullav; | |
3040 | else if (sv == (SV*)comppad) { | |
3041 | comppad = Nullav; | |
3042 | curpad = Null(SV**); | |
3043 | } | |
3044 | SvREFCNT_dec(sv); | |
8ebc5c01 | 3045 | } |
3046 | SvREFCNT_dec((SV*)CvPADLIST(cv)); | |
8e07c86e | 3047 | } |
8e07c86e AD |
3048 | CvPADLIST(cv) = Nullav; |
3049 | } | |
79072805 LW |
3050 | } |
3051 | ||
5f05dabc | 3052 | #ifdef DEBUG_CLOSURES |
3053 | static void | |
3054 | cv_dump(cv) | |
3055 | CV* cv; | |
3056 | { | |
3057 | CV *outside = CvOUTSIDE(cv); | |
3058 | AV* padlist = CvPADLIST(cv); | |
4fdae800 | 3059 | AV* pad_name; |
3060 | AV* pad; | |
3061 | SV** pname; | |
3062 | SV** ppad; | |
5f05dabc | 3063 | I32 ix; |
3064 | ||
3065 | PerlIO_printf(Perl_debug_log, "\tCV=0x%p (%s), OUTSIDE=0x%p (%s)\n", | |
ab50184a CS |
3066 | cv, |
3067 | (CvANON(cv) ? "ANON" | |
3068 | : (cv == main_cv) ? "MAIN" | |
07055b4c | 3069 | : CvUNIQUE(outside) ? "UNIQUE" |
44a8e56a | 3070 | : CvGV(cv) ? GvNAME(CvGV(cv)) : "UNDEFINED"), |
ab50184a CS |
3071 | outside, |
3072 | (!outside ? "null" | |
3073 | : CvANON(outside) ? "ANON" | |
3074 | : (outside == main_cv) ? "MAIN" | |
07055b4c | 3075 | : CvUNIQUE(outside) ? "UNIQUE" |
44a8e56a | 3076 | : CvGV(outside) ? GvNAME(CvGV(outside)) : "UNDEFINED")); |
5f05dabc | 3077 | |
4fdae800 | 3078 | if (!padlist) |
3079 | return; | |
3080 | ||
3081 | pad_name = (AV*)*av_fetch(padlist, 0, FALSE); | |
3082 | pad = (AV*)*av_fetch(padlist, 1, FALSE); | |
3083 | pname = AvARRAY(pad_name); | |
3084 | ppad = AvARRAY(pad); | |
3085 | ||
9607fc9c | 3086 | for (ix = 1; ix <= AvFILL(pad_name); ix++) { |
5f05dabc | 3087 | if (SvPOK(pname[ix])) |
4fdae800 | 3088 | PerlIO_printf(Perl_debug_log, "\t%4d. 0x%p (%s\"%s\" %ld-%ld)\n", |
3089 | ix, ppad[ix], | |
3090 | SvFAKE(pname[ix]) ? "FAKE " : "", | |
3091 | SvPVX(pname[ix]), | |
ab50184a CS |
3092 | (long)I_32(SvNVX(pname[ix])), |
3093 | (long)SvIVX(pname[ix])); | |
5f05dabc | 3094 | } |
3095 | } | |
3096 | #endif /* DEBUG_CLOSURES */ | |
3097 | ||
3098 | static CV * | |
3099 | cv_clone2(proto, outside) | |
748a9306 | 3100 | CV* proto; |
5f05dabc | 3101 | CV* outside; |
748a9306 | 3102 | { |
11343788 | 3103 | dTHR; |
748a9306 LW |
3104 | AV* av; |
3105 | I32 ix; | |
3106 | AV* protopadlist = CvPADLIST(proto); | |
3107 | AV* protopad_name = (AV*)*av_fetch(protopadlist, 0, FALSE); | |
3108 | AV* protopad = (AV*)*av_fetch(protopadlist, 1, FALSE); | |
5f05dabc | 3109 | SV** pname = AvARRAY(protopad_name); |
3110 | SV** ppad = AvARRAY(protopad); | |
9607fc9c | 3111 | I32 fname = AvFILL(protopad_name); |
3112 | I32 fpad = AvFILL(protopad); | |
748a9306 LW |
3113 | AV* comppadlist; |
3114 | CV* cv; | |
3115 | ||
07055b4c CS |
3116 | assert(!CvUNIQUE(proto)); |
3117 | ||
748a9306 LW |
3118 | ENTER; |
3119 | SAVESPTR(curpad); | |
3120 | SAVESPTR(comppad); | |
46fc3d4c | 3121 | SAVESPTR(comppad_name); |
748a9306 LW |
3122 | SAVESPTR(compcv); |
3123 | ||
3124 | cv = compcv = (CV*)NEWSV(1104,0); | |
fa83b5b6 | 3125 | sv_upgrade((SV *)cv, SvTYPE(proto)); |
a5f75d66 | 3126 | CvCLONED_on(cv); |
5f05dabc | 3127 | if (CvANON(proto)) |
3128 | CvANON_on(cv); | |
748a9306 | 3129 | |
11343788 | 3130 | #ifdef USE_THREADS |
12ca11f6 | 3131 | New(666, CvMUTEXP(cv), 1, perl_mutex); |
11343788 | 3132 | MUTEX_INIT(CvMUTEXP(cv)); |
11343788 MB |
3133 | CvOWNER(cv) = 0; |
3134 | #endif /* USE_THREADS */ | |
748a9306 | 3135 | CvFILEGV(cv) = CvFILEGV(proto); |
44a8e56a | 3136 | CvGV(cv) = (GV*)SvREFCNT_inc(CvGV(proto)); |
748a9306 LW |
3137 | CvSTASH(cv) = CvSTASH(proto); |
3138 | CvROOT(cv) = CvROOT(proto); | |
3139 | CvSTART(cv) = CvSTART(proto); | |
5f05dabc | 3140 | if (outside) |
3141 | CvOUTSIDE(cv) = (CV*)SvREFCNT_inc(outside); | |
748a9306 | 3142 | |
68dc0745 | 3143 | if (SvPOK(proto)) |
3144 | sv_setpvn((SV*)cv, SvPVX(proto), SvCUR(proto)); | |
3145 | ||
46fc3d4c | 3146 | comppad_name = newAV(); |
3147 | for (ix = fname; ix >= 0; ix--) | |
3148 | av_store(comppad_name, ix, SvREFCNT_inc(pname[ix])); | |
748a9306 LW |
3149 | |
3150 | comppad = newAV(); | |
3151 | ||
3152 | comppadlist = newAV(); | |
3153 | AvREAL_off(comppadlist); | |
46fc3d4c | 3154 | av_store(comppadlist, 0, (SV*)comppad_name); |
b355b4e0 | 3155 | av_store(comppadlist, 1, (SV*)comppad); |
748a9306 | 3156 | CvPADLIST(cv) = comppadlist; |
5f05dabc | 3157 | av_fill(comppad, AvFILL(protopad)); |
748a9306 LW |
3158 | curpad = AvARRAY(comppad); |
3159 | ||
3160 | av = newAV(); /* will be @_ */ | |
3161 | av_extend(av, 0); | |
3162 | av_store(comppad, 0, (SV*)av); | |
3163 | AvFLAGS(av) = AVf_REIFY; | |
3164 | ||
9607fc9c | 3165 | for (ix = fpad; ix > 0; ix--) { |
3166 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; | |
aa689395 | 3167 | if (namesv && namesv != &sv_undef) { |
3168 | char *name = SvPVX(namesv); /* XXX */ | |
3169 | if (SvFLAGS(namesv) & SVf_FAKE) { /* lexical from outside? */ | |
3170 | I32 off = pad_findlex(name, ix, SvIVX(namesv), | |
5f05dabc | 3171 | CvOUTSIDE(cv), cxstack_ix); |
3172 | if (!off) | |
3173 | curpad[ix] = SvREFCNT_inc(ppad[ix]); | |
3174 | else if (off != ix) | |
748a9306 LW |
3175 | croak("panic: cv_clone: %s", name); |
3176 | } | |
3177 | else { /* our own lexical */ | |
aa689395 | 3178 | SV* sv; |
5f05dabc | 3179 | if (*name == '&') { |
3180 | /* anon code -- we'll come back for it */ | |
3181 | sv = SvREFCNT_inc(ppad[ix]); | |
3182 | } | |
3183 | else if (*name == '@') | |
3184 | sv = (SV*)newAV(); | |
748a9306 | 3185 | else if (*name == '%') |
5f05dabc | 3186 | sv = (SV*)newHV(); |
748a9306 | 3187 | else |
5f05dabc | 3188 | sv = NEWSV(0,0); |
3189 | if (!SvPADBUSY(sv)) | |
3190 | SvPADMY_on(sv); | |
3191 | curpad[ix] = sv; | |
748a9306 LW |
3192 | } |
3193 | } | |
3194 | else { | |
aa689395 | 3195 | SV* sv = NEWSV(0,0); |
748a9306 | 3196 | SvPADTMP_on(sv); |
5f05dabc | 3197 | curpad[ix] = sv; |
748a9306 LW |
3198 | } |
3199 | } | |
3200 | ||
5f05dabc | 3201 | /* Now that vars are all in place, clone nested closures. */ |
3202 | ||
9607fc9c | 3203 | for (ix = fpad; ix > 0; ix--) { |
3204 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; | |
aa689395 | 3205 | if (namesv |
3206 | && namesv != &sv_undef | |
3207 | && !(SvFLAGS(namesv) & SVf_FAKE) | |
3208 | && *SvPVX(namesv) == '&' | |
5f05dabc | 3209 | && CvCLONE(ppad[ix])) |
3210 | { | |
3211 | CV *kid = cv_clone2((CV*)ppad[ix], cv); | |
3212 | SvREFCNT_dec(ppad[ix]); | |
3213 | CvCLONE_on(kid); | |
3214 | SvPADMY_on(kid); | |
3215 | curpad[ix] = (SV*)kid; | |
748a9306 LW |
3216 | } |
3217 | } | |
3218 | ||
5f05dabc | 3219 | #ifdef DEBUG_CLOSURES |
ab50184a CS |
3220 | PerlIO_printf(Perl_debug_log, "Cloned inside:\n"); |
3221 | cv_dump(outside); | |
3222 | PerlIO_printf(Perl_debug_log, " from:\n"); | |
5f05dabc | 3223 | cv_dump(proto); |
ab50184a | 3224 | PerlIO_printf(Perl_debug_log, " to:\n"); |
5f05dabc | 3225 | cv_dump(cv); |
3226 | #endif | |
3227 | ||
748a9306 LW |
3228 | LEAVE; |
3229 | return cv; | |
3230 | } | |
3231 | ||
3232 | CV * | |
5f05dabc | 3233 | cv_clone(proto) |
3234 | CV* proto; | |
3235 | { | |
3236 | return cv_clone2(proto, CvOUTSIDE(proto)); | |
3237 | } | |
3238 | ||
3fe9a6f1 | 3239 | void |
3240 | cv_ckproto(cv, gv, p) | |
3241 | CV* cv; | |
3242 | GV* gv; | |
3243 | char* p; | |
3244 | { | |
3245 | if ((!p != !SvPOK(cv)) || (p && strNE(p, SvPVX(cv)))) { | |
46fc3d4c | 3246 | SV* msg = sv_newmortal(); |
3fe9a6f1 | 3247 | SV* name = Nullsv; |
3248 | ||
3249 | if (gv) | |
46fc3d4c | 3250 | gv_efullname3(name = sv_newmortal(), gv, Nullch); |
3251 | sv_setpv(msg, "Prototype mismatch:"); | |
3252 | if (name) | |
fc36a67e | 3253 | sv_catpvf(msg, " sub %_", name); |
3fe9a6f1 | 3254 | if (SvPOK(cv)) |
46fc3d4c | 3255 | sv_catpvf(msg, " (%s)", SvPVX(cv)); |
3256 | sv_catpv(msg, " vs "); | |
3257 | if (p) | |
3258 | sv_catpvf(msg, "(%s)", p); | |
3259 | else | |
3260 | sv_catpv(msg, "none"); | |
fc36a67e | 3261 | warn("%_", msg); |
3fe9a6f1 | 3262 | } |
3263 | } | |
3264 | ||
760ac839 LW |
3265 | SV * |
3266 | cv_const_sv(cv) | |
3fe9a6f1 | 3267 | CV* cv; |
760ac839 LW |
3268 | { |
3269 | OP *o; | |
54310121 | 3270 | SV *sv; |
760ac839 | 3271 | |
54310121 | 3272 | if (!cv || !SvPOK(cv) || SvCUR(cv)) |
3273 | return Nullsv; | |
760ac839 | 3274 | |
54310121 | 3275 | sv = Nullsv; |
3276 | for (o = CvSTART(cv); o; o = o->op_next) { | |
3277 | OPCODE type = o->op_type; | |
3278 | ||
3279 | if (type == OP_NEXTSTATE || type == OP_NULL || type == OP_PUSHMARK) | |
3280 | continue; | |
3281 | if (type == OP_LEAVESUB || type == OP_RETURN) | |
3282 | break; | |
3283 | if (sv) | |
3284 | return Nullsv; | |
3285 | if (type == OP_CONST) | |
5dc0d613 | 3286 | sv = cSVOPo->op_sv; |
54310121 | 3287 | else if (type == OP_PADSV) { |
e858de61 MB |
3288 | AV* padav = (AV*)(AvARRAY(CvPADLIST(cv))[1]); |
3289 | sv = padav ? AvARRAY(padav)[o->op_targ] : Nullsv; | |
5aabfad6 | 3290 | if (!sv || (!SvREADONLY(sv) && SvREFCNT(sv) > 1)) |
54310121 | 3291 | return Nullsv; |
760ac839 | 3292 | } |
54310121 | 3293 | else |
3294 | return Nullsv; | |
760ac839 | 3295 | } |
5aabfad6 | 3296 | if (sv) |
3297 | SvREADONLY_on(sv); | |
760ac839 LW |
3298 | return sv; |
3299 | } | |
3300 | ||
748a9306 | 3301 | CV * |
11343788 | 3302 | newSUB(floor,o,proto,block) |
79072805 | 3303 | I32 floor; |
11343788 | 3304 | OP *o; |
4633a7c4 | 3305 | OP *proto; |
79072805 LW |
3306 | OP *block; |
3307 | { | |
11343788 | 3308 | dTHR; |
5dc0d613 | 3309 | char *name = o ? SvPVx(cSVOPo->op_sv, na) : Nullch; |
44a8e56a | 3310 | GV *gv = gv_fetchpv(name ? name : "__ANON__", GV_ADDMULTI, SVt_PVCV); |
3fe9a6f1 | 3311 | char *ps = proto ? SvPVx(((SVOP*)proto)->op_sv, na) : Nullch; |
79072805 | 3312 | register CV *cv; |
a0d0e21e | 3313 | I32 ix; |
79072805 | 3314 | |
11343788 | 3315 | if (o) |
5dc0d613 | 3316 | SAVEFREEOP(o); |
3fe9a6f1 | 3317 | if (proto) |
3318 | SAVEFREEOP(proto); | |
3319 | ||
68dc0745 | 3320 | if (!name || GvCVGEN(gv)) |
3321 | cv = Nullcv; | |
3322 | else if (cv = GvCV(gv)) { | |
3fe9a6f1 | 3323 | cv_ckproto(cv, gv, ps); |
68dc0745 | 3324 | /* already defined (or promised)? */ |
3325 | if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
3326 | SV* const_sv; | |
aa689395 | 3327 | if (!block) { |
3328 | /* just a "sub foo;" when &foo is already defined */ | |
3329 | SAVEFREESV(compcv); | |
3330 | goto done; | |
3331 | } | |
7bac28a0 | 3332 | /* ahem, death to those who redefine active sort subs */ |
3333 | if (curstack == sortstack && sortcop == CvSTART(cv)) | |
3334 | croak("Can't redefine active sort subroutine %s", name); | |
68dc0745 | 3335 | const_sv = cv_const_sv(cv); |
44a8e56a | 3336 | if (const_sv || dowarn) { |
79072805 | 3337 | line_t oldline = curcop->cop_line; |
79072805 | 3338 | curcop->cop_line = copline; |
760ac839 | 3339 | warn(const_sv ? "Constant subroutine %s redefined" |
68dc0745 | 3340 | : "Subroutine %s redefined", name); |
79072805 LW |
3341 | curcop->cop_line = oldline; |
3342 | } | |
8990e307 | 3343 | SvREFCNT_dec(cv); |
68dc0745 | 3344 | cv = Nullcv; |
79072805 LW |
3345 | } |
3346 | } | |
a0d0e21e | 3347 | if (cv) { /* must reuse cv if autoloaded */ |
4633a7c4 | 3348 | cv_undef(cv); |
44a8e56a | 3349 | CvFLAGS(cv) = CvFLAGS(compcv); |
748a9306 | 3350 | CvOUTSIDE(cv) = CvOUTSIDE(compcv); |
e9a444f0 | 3351 | CvOUTSIDE(compcv) = 0; |
748a9306 | 3352 | CvPADLIST(cv) = CvPADLIST(compcv); |
4aa0a1f7 | 3353 | CvPADLIST(compcv) = 0; |
4633a7c4 LW |
3354 | if (SvREFCNT(compcv) > 1) /* XXX Make closures transit through stub. */ |
3355 | CvOUTSIDE(compcv) = (CV*)SvREFCNT_inc((SV*)cv); | |
748a9306 | 3356 | SvREFCNT_dec(compcv); |
a0d0e21e LW |
3357 | } |
3358 | else { | |
748a9306 | 3359 | cv = compcv; |
44a8e56a | 3360 | if (name) { |
3361 | GvCV(gv) = cv; | |
3362 | GvCVGEN(gv) = 0; | |
3363 | sub_generation++; | |
3364 | } | |
a0d0e21e | 3365 | } |
44a8e56a | 3366 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
79072805 | 3367 | CvFILEGV(cv) = curcop->cop_filegv; |
8990e307 | 3368 | CvSTASH(cv) = curstash; |
11343788 MB |
3369 | #ifdef USE_THREADS |
3370 | CvOWNER(cv) = 0; | |
12ca11f6 | 3371 | New(666, CvMUTEXP(cv), 1, perl_mutex); |
11343788 | 3372 | MUTEX_INIT(CvMUTEXP(cv)); |
11343788 | 3373 | #endif /* USE_THREADS */ |
8990e307 | 3374 | |
3fe9a6f1 | 3375 | if (ps) |
3376 | sv_setpv((SV*)cv, ps); | |
4633a7c4 | 3377 | |
c07a80fd | 3378 | if (error_count) { |
3379 | op_free(block); | |
3380 | block = Nullop; | |
68dc0745 | 3381 | if (name) { |
3382 | char *s = strrchr(name, ':'); | |
3383 | s = s ? s+1 : name; | |
6d4c2119 CS |
3384 | if (strEQ(s, "BEGIN")) { |
3385 | char *not_safe = | |
3386 | "BEGIN not safe after errors--compilation aborted"; | |
3387 | if (in_eval & 4) | |
3388 | croak(not_safe); | |
3389 | else { | |
3390 | /* force display of errors found but not reported */ | |
3391 | sv_catpv(GvSV(errgv), not_safe); | |
3392 | croak("%s", SvPVx(GvSV(errgv), na)); | |
3393 | } | |
3394 | } | |
68dc0745 | 3395 | } |
c07a80fd | 3396 | } |
a0d0e21e | 3397 | if (!block) { |
a0d0e21e LW |
3398 | copline = NOLINE; |
3399 | LEAVE_SCOPE(floor); | |
3400 | return cv; | |
3401 | } | |
3402 | ||
54310121 | 3403 | if (AvFILL(comppad_name) < AvFILL(comppad)) |
3404 | av_store(comppad_name, AvFILL(comppad), Nullsv); | |
a0d0e21e | 3405 | |
54310121 | 3406 | if (CvCLONE(cv)) { |
3407 | SV **namep = AvARRAY(comppad_name); | |
3408 | for (ix = AvFILL(comppad); ix > 0; ix--) { | |
3409 | SV *namesv; | |
3410 | ||
3411 | if (SvIMMORTAL(curpad[ix])) | |
3412 | continue; | |
3413 | /* | |
3414 | * The only things that a clonable function needs in its | |
3415 | * pad are references to outer lexicals and anonymous subs. | |
3416 | * The rest are created anew during cloning. | |
3417 | */ | |
3418 | if (!((namesv = namep[ix]) != Nullsv && | |
3419 | namesv != &sv_undef && | |
3420 | (SvFAKE(namesv) || | |
3421 | *SvPVX(namesv) == '&'))) | |
3422 | { | |
3423 | SvREFCNT_dec(curpad[ix]); | |
3424 | curpad[ix] = Nullsv; | |
3425 | } | |
3426 | } | |
a0d0e21e | 3427 | } |
54310121 | 3428 | else { |
3429 | AV *av = newAV(); /* Will be @_ */ | |
3430 | av_extend(av, 0); | |
3431 | av_store(comppad, 0, (SV*)av); | |
3432 | AvFLAGS(av) = AVf_REIFY; | |
79072805 | 3433 | |
54310121 | 3434 | for (ix = AvFILL(comppad); ix > 0; ix--) { |
3435 | if (SvIMMORTAL(curpad[ix])) | |
3436 | continue; | |
3437 | if (!SvPADMY(curpad[ix])) | |
3438 | SvPADTMP_on(curpad[ix]); | |
3439 | } | |
3440 | } | |
79072805 | 3441 | |
a0d0e21e | 3442 | CvROOT(cv) = newUNOP(OP_LEAVESUB, 0, scalarseq(block)); |
79072805 LW |
3443 | CvSTART(cv) = LINKLIST(CvROOT(cv)); |
3444 | CvROOT(cv)->op_next = 0; | |
3445 | peep(CvSTART(cv)); | |
93a17b20 | 3446 | |
44a8e56a | 3447 | if (name) { |
3448 | char *s; | |
3449 | ||
3450 | if (perldb && curstash != debstash) { | |
46fc3d4c | 3451 | SV *sv = NEWSV(0,0); |
44a8e56a | 3452 | SV *tmpstr = sv_newmortal(); |
3453 | static GV *db_postponed; | |
3454 | CV *cv; | |
3455 | HV *hv; | |
3456 | ||
fc36a67e | 3457 | sv_setpvf(sv, "%_:%ld-%ld", |
46fc3d4c | 3458 | GvSV(curcop->cop_filegv), |
3459 | (long)subline, (long)curcop->cop_line); | |
44a8e56a | 3460 | gv_efullname3(tmpstr, gv, Nullch); |
3461 | hv_store(GvHV(DBsub), SvPVX(tmpstr), SvCUR(tmpstr), sv, 0); | |
3462 | if (!db_postponed) { | |
6bbcb22c | 3463 | db_postponed = gv_fetchpv("DB::postponed", GV_ADDMULTI, SVt_PVHV); |
44a8e56a | 3464 | } |
3465 | hv = GvHVn(db_postponed); | |
9607fc9c | 3466 | if (HvFILL(hv) > 0 && hv_exists(hv, SvPVX(tmpstr), SvCUR(tmpstr)) |
3467 | && (cv = GvCV(db_postponed))) { | |
44a8e56a | 3468 | dSP; |
3469 | PUSHMARK(sp); | |
3470 | XPUSHs(tmpstr); | |
3471 | PUTBACK; | |
3472 | perl_call_sv((SV*)cv, G_DISCARD); | |
3473 | } | |
3474 | } | |
79072805 | 3475 | |
44a8e56a | 3476 | if ((s = strrchr(name,':'))) |
28757baa | 3477 | s++; |
3478 | else | |
3479 | s = name; | |
68dc0745 | 3480 | if (strEQ(s, "BEGIN")) { |
2ae324a7 | 3481 | I32 oldscope = scopestack_ix; |
28757baa | 3482 | ENTER; |
3483 | SAVESPTR(compiling.cop_filegv); | |
3484 | SAVEI16(compiling.cop_line); | |
3485 | SAVEI32(perldb); | |
3486 | save_svref(&rs); | |
3487 | sv_setsv(rs, nrs); | |
3488 | ||
3489 | if (!beginav) | |
3490 | beginav = newAV(); | |
3491 | DEBUG_x( dump_sub(gv) ); | |
3492 | av_push(beginav, (SV *)cv); | |
3493 | GvCV(gv) = 0; | |
68dc0745 | 3494 | call_list(oldscope, beginav); |
a6006777 | 3495 | |
28757baa | 3496 | curcop = &compiling; |
3497 | LEAVE; | |
3498 | } | |
3499 | else if (strEQ(s, "END") && !error_count) { | |
3500 | if (!endav) | |
3501 | endav = newAV(); | |
3502 | av_unshift(endav, 1); | |
3503 | av_store(endav, 0, (SV *)cv); | |
3504 | GvCV(gv) = 0; | |
3505 | } | |
7d07dbc2 MB |
3506 | else if (strEQ(s, "INIT") && !error_count) { |
3507 | if (!initav) | |
3508 | initav = newAV(); | |
3509 | av_push(initav, SvREFCNT_inc(cv)); | |
ae77835f | 3510 | } |
79072805 | 3511 | } |
a6006777 | 3512 | |
aa689395 | 3513 | done: |
79072805 | 3514 | copline = NOLINE; |
8990e307 | 3515 | LEAVE_SCOPE(floor); |
a0d0e21e | 3516 | return cv; |
79072805 LW |
3517 | } |
3518 | ||
a0d0e21e LW |
3519 | #ifdef DEPRECATED |
3520 | CV * | |
463ee0b2 | 3521 | newXSUB(name, ix, subaddr, filename) |
79072805 LW |
3522 | char *name; |
3523 | I32 ix; | |
3524 | I32 (*subaddr)(); | |
3525 | char *filename; | |
3526 | { | |
a0d0e21e | 3527 | CV* cv = newXS(name, (void(*)())subaddr, filename); |
a5f75d66 | 3528 | CvOLDSTYLE_on(cv); |
a0d0e21e LW |
3529 | CvXSUBANY(cv).any_i32 = ix; |
3530 | return cv; | |
3531 | } | |
3532 | #endif | |
3533 | ||
3534 | CV * | |
3535 | newXS(name, subaddr, filename) | |
3536 | char *name; | |
3537 | void (*subaddr) _((CV*)); | |
3538 | char *filename; | |
3539 | { | |
11343788 | 3540 | dTHR; |
44a8e56a | 3541 | GV *gv = gv_fetchpv(name ? name : "__ANON__", GV_ADDMULTI, SVt_PVCV); |
79072805 | 3542 | register CV *cv; |
44a8e56a | 3543 | |
3544 | if (cv = (name ? GvCV(gv) : Nullcv)) { | |
3545 | if (GvCVGEN(gv)) { | |
3546 | /* just a cached method */ | |
3547 | SvREFCNT_dec(cv); | |
3548 | cv = 0; | |
3549 | } | |
3550 | else if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
3551 | /* already defined (or promised) */ | |
a0d0e21e LW |
3552 | if (dowarn) { |
3553 | line_t oldline = curcop->cop_line; | |
a0d0e21e LW |
3554 | curcop->cop_line = copline; |
3555 | warn("Subroutine %s redefined",name); | |
3556 | curcop->cop_line = oldline; | |
3557 | } | |
3558 | SvREFCNT_dec(cv); | |
3559 | cv = 0; | |
79072805 | 3560 | } |
79072805 | 3561 | } |
44a8e56a | 3562 | |
3563 | if (cv) /* must reuse cv if autoloaded */ | |
3564 | cv_undef(cv); | |
a0d0e21e LW |
3565 | else { |
3566 | cv = (CV*)NEWSV(1105,0); | |
3567 | sv_upgrade((SV *)cv, SVt_PVCV); | |
44a8e56a | 3568 | if (name) { |
3569 | GvCV(gv) = cv; | |
3570 | GvCVGEN(gv) = 0; | |
3571 | sub_generation++; | |
3572 | } | |
a0d0e21e | 3573 | } |
5196be3e | 3574 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
11343788 | 3575 | #ifdef USE_THREADS |
12ca11f6 | 3576 | New(666, CvMUTEXP(cv), 1, perl_mutex); |
11343788 | 3577 | MUTEX_INIT(CvMUTEXP(cv)); |
11343788 MB |
3578 | CvOWNER(cv) = 0; |
3579 | #endif /* USE_THREADS */ | |
79072805 | 3580 | CvFILEGV(cv) = gv_fetchfile(filename); |
a0d0e21e | 3581 | CvXSUB(cv) = subaddr; |
44a8e56a | 3582 | |
28757baa | 3583 | if (name) { |
3584 | char *s = strrchr(name,':'); | |
3585 | if (s) | |
3586 | s++; | |
3587 | else | |
3588 | s = name; | |
3589 | if (strEQ(s, "BEGIN")) { | |
3590 | if (!beginav) | |
3591 | beginav = newAV(); | |
44a8e56a | 3592 | av_push(beginav, (SV *)cv); |
3593 | GvCV(gv) = 0; | |
28757baa | 3594 | } |
3595 | else if (strEQ(s, "END")) { | |
3596 | if (!endav) | |
3597 | endav = newAV(); | |
3598 | av_unshift(endav, 1); | |
44a8e56a | 3599 | av_store(endav, 0, (SV *)cv); |
3600 | GvCV(gv) = 0; | |
28757baa | 3601 | } |
7d07dbc2 MB |
3602 | else if (strEQ(s, "INIT")) { |
3603 | if (!initav) | |
3604 | initav = newAV(); | |
3605 | av_push(initav, (SV *)cv); | |
ae77835f | 3606 | } |
28757baa | 3607 | } |
8990e307 | 3608 | else |
a5f75d66 | 3609 | CvANON_on(cv); |
44a8e56a | 3610 | |
a0d0e21e | 3611 | return cv; |
79072805 LW |
3612 | } |
3613 | ||
3614 | void | |
11343788 | 3615 | newFORM(floor,o,block) |
79072805 | 3616 | I32 floor; |
11343788 | 3617 | OP *o; |
79072805 LW |
3618 | OP *block; |
3619 | { | |
11343788 | 3620 | dTHR; |
79072805 LW |
3621 | register CV *cv; |
3622 | char *name; | |
3623 | GV *gv; | |
a0d0e21e | 3624 | I32 ix; |
79072805 | 3625 | |
11343788 MB |
3626 | if (o) |
3627 | name = SvPVx(cSVOPo->op_sv, na); | |
79072805 LW |
3628 | else |
3629 | name = "STDOUT"; | |
85e6fe83 | 3630 | gv = gv_fetchpv(name,TRUE, SVt_PVFM); |
a5f75d66 | 3631 | GvMULTI_on(gv); |
79072805 LW |
3632 | if (cv = GvFORM(gv)) { |
3633 | if (dowarn) { | |
3634 | line_t oldline = curcop->cop_line; | |
3635 | ||
3636 | curcop->cop_line = copline; | |
3637 | warn("Format %s redefined",name); | |
3638 | curcop->cop_line = oldline; | |
3639 | } | |
8990e307 | 3640 | SvREFCNT_dec(cv); |
79072805 | 3641 | } |
748a9306 | 3642 | cv = compcv; |
79072805 | 3643 | GvFORM(gv) = cv; |
44a8e56a | 3644 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
79072805 LW |
3645 | CvFILEGV(cv) = curcop->cop_filegv; |
3646 | ||
a0d0e21e | 3647 | for (ix = AvFILL(comppad); ix > 0; ix--) { |
44a8e56a | 3648 | if (!SvPADMY(curpad[ix]) && !SvIMMORTAL(curpad[ix])) |
a0d0e21e LW |
3649 | SvPADTMP_on(curpad[ix]); |
3650 | } | |
3651 | ||
79072805 LW |
3652 | CvROOT(cv) = newUNOP(OP_LEAVEWRITE, 0, scalarseq(block)); |
3653 | CvSTART(cv) = LINKLIST(CvROOT(cv)); | |
3654 | CvROOT(cv)->op_next = 0; | |
3655 | peep(CvSTART(cv)); | |
11343788 | 3656 | op_free(o); |
79072805 | 3657 | copline = NOLINE; |
8990e307 | 3658 | LEAVE_SCOPE(floor); |
79072805 LW |
3659 | } |
3660 | ||
3661 | OP * | |
11343788 MB |
3662 | newANONLIST(o) |
3663 | OP* o; | |
79072805 | 3664 | { |
93a17b20 | 3665 | return newUNOP(OP_REFGEN, 0, |
11343788 | 3666 | mod(list(convert(OP_ANONLIST, 0, o)), OP_REFGEN)); |
79072805 LW |
3667 | } |
3668 | ||
3669 | OP * | |
11343788 MB |
3670 | newANONHASH(o) |
3671 | OP* o; | |
79072805 | 3672 | { |
93a17b20 | 3673 | return newUNOP(OP_REFGEN, 0, |
11343788 | 3674 | mod(list(convert(OP_ANONHASH, 0, o)), OP_REFGEN)); |
a0d0e21e LW |
3675 | } |
3676 | ||
3677 | OP * | |
4633a7c4 | 3678 | newANONSUB(floor, proto, block) |
a0d0e21e | 3679 | I32 floor; |
4633a7c4 | 3680 | OP *proto; |
a0d0e21e LW |
3681 | OP *block; |
3682 | { | |
3683 | return newUNOP(OP_REFGEN, 0, | |
4633a7c4 | 3684 | newSVOP(OP_ANONCODE, 0, (SV*)newSUB(floor, 0, proto, block))); |
79072805 LW |
3685 | } |
3686 | ||
3687 | OP * | |
3688 | oopsAV(o) | |
3689 | OP *o; | |
3690 | { | |
ed6116ce LW |
3691 | switch (o->op_type) { |
3692 | case OP_PADSV: | |
3693 | o->op_type = OP_PADAV; | |
3694 | o->op_ppaddr = ppaddr[OP_PADAV]; | |
3695 | return ref(newUNOP(OP_RV2AV, 0, scalar(o)), OP_RV2AV); | |
3696 | ||
3697 | case OP_RV2SV: | |
79072805 LW |
3698 | o->op_type = OP_RV2AV; |
3699 | o->op_ppaddr = ppaddr[OP_RV2AV]; | |
3700 | ref(o, OP_RV2AV); | |
ed6116ce LW |
3701 | break; |
3702 | ||
3703 | default: | |
79072805 | 3704 | warn("oops: oopsAV"); |
ed6116ce LW |
3705 | break; |
3706 | } | |
79072805 LW |
3707 | return o; |
3708 | } | |
3709 | ||
3710 | OP * | |
3711 | oopsHV(o) | |
3712 | OP *o; | |
3713 | { | |
ed6116ce LW |
3714 | switch (o->op_type) { |
3715 | case OP_PADSV: | |
3716 | case OP_PADAV: | |
3717 | o->op_type = OP_PADHV; | |
3718 | o->op_ppaddr = ppaddr[OP_PADHV]; | |
3719 | return ref(newUNOP(OP_RV2HV, 0, scalar(o)), OP_RV2HV); | |
3720 | ||
3721 | case OP_RV2SV: | |
3722 | case OP_RV2AV: | |
79072805 LW |
3723 | o->op_type = OP_RV2HV; |
3724 | o->op_ppaddr = ppaddr[OP_RV2HV]; | |
3725 | ref(o, OP_RV2HV); | |
ed6116ce LW |
3726 | break; |
3727 | ||
3728 | default: | |
79072805 | 3729 | warn("oops: oopsHV"); |
ed6116ce LW |
3730 | break; |
3731 | } | |
79072805 LW |
3732 | return o; |
3733 | } | |
3734 | ||
3735 | OP * | |
3736 | newAVREF(o) | |
3737 | OP *o; | |
3738 | { | |
ed6116ce LW |
3739 | if (o->op_type == OP_PADANY) { |
3740 | o->op_type = OP_PADAV; | |
3741 | o->op_ppaddr = ppaddr[OP_PADAV]; | |
93a17b20 | 3742 | return o; |
ed6116ce | 3743 | } |
79072805 LW |
3744 | return newUNOP(OP_RV2AV, 0, scalar(o)); |
3745 | } | |
3746 | ||
3747 | OP * | |
a0d0e21e LW |
3748 | newGVREF(type,o) |
3749 | I32 type; | |
79072805 LW |
3750 | OP *o; |
3751 | { | |
a0d0e21e LW |
3752 | if (type == OP_MAPSTART) |
3753 | return newUNOP(OP_NULL, 0, o); | |
748a9306 | 3754 | return ref(newUNOP(OP_RV2GV, OPf_REF, o), type); |
79072805 LW |
3755 | } |
3756 | ||
3757 | OP * | |
3758 | newHVREF(o) | |
3759 | OP *o; | |
3760 | { | |
ed6116ce LW |
3761 | if (o->op_type == OP_PADANY) { |
3762 | o->op_type = OP_PADHV; | |
3763 | o->op_ppaddr = ppaddr[OP_PADHV]; | |
93a17b20 | 3764 | return o; |
ed6116ce | 3765 | } |
79072805 LW |
3766 | return newUNOP(OP_RV2HV, 0, scalar(o)); |
3767 | } | |
3768 | ||
3769 | OP * | |
3770 | oopsCV(o) | |
3771 | OP *o; | |
3772 | { | |
463ee0b2 | 3773 | croak("NOT IMPL LINE %d",__LINE__); |
79072805 LW |
3774 | /* STUB */ |
3775 | return o; | |
3776 | } | |
3777 | ||
3778 | OP * | |
c07a80fd | 3779 | newCVREF(flags, o) |
3780 | I32 flags; | |
79072805 LW |
3781 | OP *o; |
3782 | { | |
c07a80fd | 3783 | return newUNOP(OP_RV2CV, flags, scalar(o)); |
79072805 LW |
3784 | } |
3785 | ||
3786 | OP * | |
3787 | newSVREF(o) | |
3788 | OP *o; | |
3789 | { | |
ed6116ce LW |
3790 | if (o->op_type == OP_PADANY) { |
3791 | o->op_type = OP_PADSV; | |
3792 | o->op_ppaddr = ppaddr[OP_PADSV]; | |
93a17b20 | 3793 | return o; |
ed6116ce | 3794 | } |
79072805 LW |
3795 | return newUNOP(OP_RV2SV, 0, scalar(o)); |
3796 | } | |
3797 | ||
3798 | /* Check routines. */ | |
3799 | ||
3800 | OP * | |
5dc0d613 MB |
3801 | ck_anoncode(o) |
3802 | OP *o; | |
5f05dabc | 3803 | { |
178c6305 CS |
3804 | PADOFFSET ix; |
3805 | SV* name; | |
3806 | ||
3807 | name = NEWSV(1106,0); | |
3808 | sv_upgrade(name, SVt_PVNV); | |
3809 | sv_setpvn(name, "&", 1); | |
3810 | SvIVX(name) = -1; | |
3811 | SvNVX(name) = 1; | |
5dc0d613 | 3812 | ix = pad_alloc(o->op_type, SVs_PADMY); |
178c6305 | 3813 | av_store(comppad_name, ix, name); |
5dc0d613 MB |
3814 | av_store(comppad, ix, cSVOPo->op_sv); |
3815 | SvPADMY_on(cSVOPo->op_sv); | |
3816 | cSVOPo->op_sv = Nullsv; | |
3817 | cSVOPo->op_targ = ix; | |
3818 | return o; | |
5f05dabc | 3819 | } |
3820 | ||
3821 | OP * | |
5dc0d613 MB |
3822 | ck_bitop(o) |
3823 | OP *o; | |
55497cff | 3824 | { |
5dc0d613 MB |
3825 | o->op_private = hints; |
3826 | return o; | |
55497cff | 3827 | } |
3828 | ||
3829 | OP * | |
11343788 MB |
3830 | ck_concat(o) |
3831 | OP *o; | |
79072805 | 3832 | { |
11343788 MB |
3833 | if (cUNOPo->op_first->op_type == OP_CONCAT) |
3834 | o->op_flags |= OPf_STACKED; | |
3835 | return o; | |
79072805 LW |
3836 | } |
3837 | ||
3838 | OP * | |
11343788 MB |
3839 | ck_spair(o) |
3840 | OP *o; | |
79072805 | 3841 | { |
11343788 | 3842 | if (o->op_flags & OPf_KIDS) { |
79072805 | 3843 | OP* newop; |
a0d0e21e | 3844 | OP* kid; |
5dc0d613 MB |
3845 | OPCODE type = o->op_type; |
3846 | o = modkids(ck_fun(o), type); | |
11343788 | 3847 | kid = cUNOPo->op_first; |
a0d0e21e LW |
3848 | newop = kUNOP->op_first->op_sibling; |
3849 | if (newop && | |
3850 | (newop->op_sibling || | |
3851 | !(opargs[newop->op_type] & OA_RETSCALAR) || | |
3852 | newop->op_type == OP_PADAV || newop->op_type == OP_PADHV || | |
3853 | newop->op_type == OP_RV2AV || newop->op_type == OP_RV2HV)) { | |
3854 | ||
11343788 | 3855 | return o; |
a0d0e21e LW |
3856 | } |
3857 | op_free(kUNOP->op_first); | |
3858 | kUNOP->op_first = newop; | |
3859 | } | |
11343788 MB |
3860 | o->op_ppaddr = ppaddr[++o->op_type]; |
3861 | return ck_fun(o); | |
a0d0e21e LW |
3862 | } |
3863 | ||
3864 | OP * | |
11343788 MB |
3865 | ck_delete(o) |
3866 | OP *o; | |
a0d0e21e | 3867 | { |
11343788 | 3868 | o = ck_fun(o); |
5dc0d613 | 3869 | o->op_private = 0; |
11343788 MB |
3870 | if (o->op_flags & OPf_KIDS) { |
3871 | OP *kid = cUNOPo->op_first; | |
5f05dabc | 3872 | if (kid->op_type == OP_HSLICE) |
5dc0d613 | 3873 | o->op_private |= OPpSLICE; |
5f05dabc | 3874 | else if (kid->op_type != OP_HELEM) |
3875 | croak("%s argument is not a HASH element or slice", | |
5dc0d613 | 3876 | op_desc[o->op_type]); |
a0d0e21e | 3877 | null(kid); |
79072805 | 3878 | } |
11343788 | 3879 | return o; |
79072805 LW |
3880 | } |
3881 | ||
3882 | OP * | |
11343788 MB |
3883 | ck_eof(o) |
3884 | OP *o; | |
79072805 | 3885 | { |
11343788 | 3886 | I32 type = o->op_type; |
79072805 | 3887 | |
11343788 MB |
3888 | if (o->op_flags & OPf_KIDS) { |
3889 | if (cLISTOPo->op_first->op_type == OP_STUB) { | |
3890 | op_free(o); | |
3891 | o = newUNOP(type, OPf_SPECIAL, | |
85e6fe83 | 3892 | newGVOP(OP_GV, 0, gv_fetchpv("main'ARGV", TRUE, SVt_PVAV))); |
8990e307 | 3893 | } |
11343788 | 3894 | return ck_fun(o); |
79072805 | 3895 | } |
11343788 | 3896 | return o; |
79072805 LW |
3897 | } |
3898 | ||
3899 | OP * | |
11343788 MB |
3900 | ck_eval(o) |
3901 | OP *o; | |
79072805 | 3902 | { |
85e6fe83 | 3903 | hints |= HINT_BLOCK_SCOPE; |
11343788 MB |
3904 | if (o->op_flags & OPf_KIDS) { |
3905 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 | 3906 | |
93a17b20 | 3907 | if (!kid) { |
11343788 MB |
3908 | o->op_flags &= ~OPf_KIDS; |
3909 | null(o); | |
79072805 LW |
3910 | } |
3911 | else if (kid->op_type == OP_LINESEQ) { | |
3912 | LOGOP *enter; | |
3913 | ||
11343788 MB |
3914 | kid->op_next = o->op_next; |
3915 | cUNOPo->op_first = 0; | |
3916 | op_free(o); | |
79072805 LW |
3917 | |
3918 | Newz(1101, enter, 1, LOGOP); | |
3919 | enter->op_type = OP_ENTERTRY; | |
3920 | enter->op_ppaddr = ppaddr[OP_ENTERTRY]; | |
3921 | enter->op_private = 0; | |
3922 | ||
3923 | /* establish postfix order */ | |
3924 | enter->op_next = (OP*)enter; | |
3925 | ||
11343788 MB |
3926 | o = prepend_elem(OP_LINESEQ, (OP*)enter, (OP*)kid); |
3927 | o->op_type = OP_LEAVETRY; | |
3928 | o->op_ppaddr = ppaddr[OP_LEAVETRY]; | |
3929 | enter->op_other = o; | |
3930 | return o; | |
79072805 LW |
3931 | } |
3932 | } | |
3933 | else { | |
11343788 MB |
3934 | op_free(o); |
3935 | o = newUNOP(OP_ENTEREVAL, 0, newSVREF(newGVOP(OP_GV, 0, defgv))); | |
79072805 | 3936 | } |
11343788 MB |
3937 | o->op_targ = (PADOFFSET)hints; |
3938 | return o; | |
79072805 LW |
3939 | } |
3940 | ||
3941 | OP * | |
11343788 MB |
3942 | ck_exec(o) |
3943 | OP *o; | |
79072805 LW |
3944 | { |
3945 | OP *kid; | |
11343788 MB |
3946 | if (o->op_flags & OPf_STACKED) { |
3947 | o = ck_fun(o); | |
3948 | kid = cUNOPo->op_first->op_sibling; | |
8990e307 LW |
3949 | if (kid->op_type == OP_RV2GV) |
3950 | null(kid); | |
79072805 | 3951 | } |
463ee0b2 | 3952 | else |
11343788 MB |
3953 | o = listkids(o); |
3954 | return o; | |
79072805 LW |
3955 | } |
3956 | ||
3957 | OP * | |
5196be3e MB |
3958 | ck_exists(o) |
3959 | OP *o; | |
5f05dabc | 3960 | { |
5196be3e MB |
3961 | o = ck_fun(o); |
3962 | if (o->op_flags & OPf_KIDS) { | |
3963 | OP *kid = cUNOPo->op_first; | |
5f05dabc | 3964 | if (kid->op_type != OP_HELEM) |
5196be3e | 3965 | croak("%s argument is not a HASH element", op_desc[o->op_type]); |
5f05dabc | 3966 | null(kid); |
3967 | } | |
5196be3e | 3968 | return o; |
5f05dabc | 3969 | } |
3970 | ||
3971 | OP * | |
79072805 LW |
3972 | ck_gvconst(o) |
3973 | register OP *o; | |
3974 | { | |
3975 | o = fold_constants(o); | |
3976 | if (o->op_type == OP_CONST) | |
3977 | o->op_type = OP_GV; | |
3978 | return o; | |
3979 | } | |
3980 | ||
3981 | OP * | |
11343788 MB |
3982 | ck_rvconst(o) |
3983 | register OP *o; | |
79072805 | 3984 | { |
11343788 MB |
3985 | dTHR; |
3986 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
85e6fe83 | 3987 | |
11343788 | 3988 | o->op_private |= (hints & HINT_STRICT_REFS); |
79072805 | 3989 | if (kid->op_type == OP_CONST) { |
44a8e56a | 3990 | char *name; |
3991 | int iscv; | |
3992 | GV *gv; | |
3993 | ||
3994 | name = SvPV(kid->op_sv, na); | |
3995 | if ((hints & HINT_STRICT_REFS) && (kid->op_private & OPpCONST_BARE)) { | |
3996 | char *badthing = Nullch; | |
5dc0d613 | 3997 | switch (o->op_type) { |
44a8e56a | 3998 | case OP_RV2SV: |
3999 | badthing = "a SCALAR"; | |
4000 | break; | |
4001 | case OP_RV2AV: | |
4002 | badthing = "an ARRAY"; | |
4003 | break; | |
4004 | case OP_RV2HV: | |
4005 | badthing = "a HASH"; | |
4006 | break; | |
4007 | } | |
4008 | if (badthing) | |
4009 | croak( | |
4010 | "Can't use bareword (\"%s\") as %s ref while \"strict refs\" in use", | |
4011 | name, badthing); | |
4012 | } | |
79072805 | 4013 | kid->op_type = OP_GV; |
5196be3e | 4014 | iscv = (o->op_type == OP_RV2CV) * 2; |
a0d0e21e | 4015 | for (gv = 0; !gv; iscv++) { |
748a9306 LW |
4016 | /* |
4017 | * This is a little tricky. We only want to add the symbol if we | |
4018 | * didn't add it in the lexer. Otherwise we get duplicate strict | |
4019 | * warnings. But if we didn't add it in the lexer, we must at | |
4020 | * least pretend like we wanted to add it even if it existed before, | |
4021 | * or we get possible typo warnings. OPpCONST_ENTERED says | |
4022 | * whether the lexer already added THIS instance of this symbol. | |
4023 | */ | |
44a8e56a | 4024 | gv = gv_fetchpv(name, |
748a9306 | 4025 | iscv | !(kid->op_private & OPpCONST_ENTERED), |
a0d0e21e LW |
4026 | iscv |
4027 | ? SVt_PVCV | |
11343788 | 4028 | : o->op_type == OP_RV2SV |
a0d0e21e | 4029 | ? SVt_PV |
11343788 | 4030 | : o->op_type == OP_RV2AV |
a0d0e21e | 4031 | ? SVt_PVAV |
11343788 | 4032 | : o->op_type == OP_RV2HV |
a0d0e21e LW |
4033 | ? SVt_PVHV |
4034 | : SVt_PVGV); | |
4035 | } | |
adbc6bb1 | 4036 | SvREFCNT_dec(kid->op_sv); |
a0d0e21e | 4037 | kid->op_sv = SvREFCNT_inc(gv); |
79072805 | 4038 | } |
11343788 | 4039 | return o; |
79072805 LW |
4040 | } |
4041 | ||
4042 | OP * | |
11343788 MB |
4043 | ck_ftst(o) |
4044 | OP *o; | |
79072805 | 4045 | { |
11343788 MB |
4046 | dTHR; |
4047 | I32 type = o->op_type; | |
79072805 | 4048 | |
11343788 MB |
4049 | if (o->op_flags & OPf_REF) |
4050 | return o; | |
79072805 | 4051 | |
11343788 MB |
4052 | if (o->op_flags & OPf_KIDS) { |
4053 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 LW |
4054 | |
4055 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
a0d0e21e | 4056 | OP *newop = newGVOP(type, OPf_REF, |
85e6fe83 | 4057 | gv_fetchpv(SvPVx(kid->op_sv, na), TRUE, SVt_PVIO)); |
11343788 | 4058 | op_free(o); |
79072805 LW |
4059 | return newop; |
4060 | } | |
4061 | } | |
4062 | else { | |
11343788 | 4063 | op_free(o); |
79072805 | 4064 | if (type == OP_FTTTY) |
a0d0e21e | 4065 | return newGVOP(type, OPf_REF, gv_fetchpv("main'STDIN", TRUE, |
85e6fe83 | 4066 | SVt_PVIO)); |
79072805 LW |
4067 | else |
4068 | return newUNOP(type, 0, newSVREF(newGVOP(OP_GV, 0, defgv))); | |
4069 | } | |
11343788 | 4070 | return o; |
79072805 LW |
4071 | } |
4072 | ||
4073 | OP * | |
11343788 MB |
4074 | ck_fun(o) |
4075 | OP *o; | |
79072805 | 4076 | { |
11343788 | 4077 | dTHR; |
79072805 LW |
4078 | register OP *kid; |
4079 | OP **tokid; | |
4080 | OP *sibl; | |
4081 | I32 numargs = 0; | |
11343788 | 4082 | int type = o->op_type; |
a0d0e21e | 4083 | register I32 oa = opargs[type] >> OASHIFT; |
79072805 | 4084 | |
11343788 | 4085 | if (o->op_flags & OPf_STACKED) { |
79072805 LW |
4086 | if ((oa & OA_OPTIONAL) && (oa >> 4) && !((oa >> 4) & OA_OPTIONAL)) |
4087 | oa &= ~OA_OPTIONAL; | |
4088 | else | |
11343788 | 4089 | return no_fh_allowed(o); |
79072805 LW |
4090 | } |
4091 | ||
11343788 MB |
4092 | if (o->op_flags & OPf_KIDS) { |
4093 | tokid = &cLISTOPo->op_first; | |
4094 | kid = cLISTOPo->op_first; | |
8990e307 LW |
4095 | if (kid->op_type == OP_PUSHMARK || |
4096 | kid->op_type == OP_NULL && kid->op_targ == OP_PUSHMARK) | |
4097 | { | |
79072805 LW |
4098 | tokid = &kid->op_sibling; |
4099 | kid = kid->op_sibling; | |
4100 | } | |
a0d0e21e LW |
4101 | if (!kid && opargs[type] & OA_DEFGV) |
4102 | *tokid = kid = newSVREF(newGVOP(OP_GV, 0, defgv)); | |
79072805 LW |
4103 | |
4104 | while (oa && kid) { | |
4105 | numargs++; | |
4106 | sibl = kid->op_sibling; | |
4107 | switch (oa & 7) { | |
4108 | case OA_SCALAR: | |
4109 | scalar(kid); | |
4110 | break; | |
4111 | case OA_LIST: | |
4112 | if (oa < 16) { | |
4113 | kid = 0; | |
4114 | continue; | |
4115 | } | |
4116 | else | |
4117 | list(kid); | |
4118 | break; | |
4119 | case OA_AVREF: | |
4120 | if (kid->op_type == OP_CONST && | |
4121 | (kid->op_private & OPpCONST_BARE)) { | |
463ee0b2 | 4122 | char *name = SvPVx(((SVOP*)kid)->op_sv, na); |
79072805 | 4123 | OP *newop = newAVREF(newGVOP(OP_GV, 0, |
85e6fe83 | 4124 | gv_fetchpv(name, TRUE, SVt_PVAV) )); |
463ee0b2 | 4125 | if (dowarn) |
ff0cee69 | 4126 | warn("Array @%s missing the @ in argument %ld of %s()", |
4127 | name, (long)numargs, op_desc[type]); | |
79072805 LW |
4128 | op_free(kid); |
4129 | kid = newop; | |
4130 | kid->op_sibling = sibl; | |
4131 | *tokid = kid; | |
4132 | } | |
8990e307 | 4133 | else if (kid->op_type != OP_RV2AV && kid->op_type != OP_PADAV) |
11343788 | 4134 | bad_type(numargs, "array", op_desc[o->op_type], kid); |
a0d0e21e | 4135 | mod(kid, type); |
79072805 LW |
4136 | break; |
4137 | case OA_HVREF: | |
4138 | if (kid->op_type == OP_CONST && | |
4139 | (kid->op_private & OPpCONST_BARE)) { | |
463ee0b2 | 4140 | char *name = SvPVx(((SVOP*)kid)->op_sv, na); |
79072805 | 4141 | OP *newop = newHVREF(newGVOP(OP_GV, 0, |
85e6fe83 | 4142 | gv_fetchpv(name, TRUE, SVt_PVHV) )); |
463ee0b2 | 4143 | if (dowarn) |
ff0cee69 | 4144 | warn("Hash %%%s missing the %% in argument %ld of %s()", |
4145 | name, (long)numargs, op_desc[type]); | |
79072805 LW |
4146 | op_free(kid); |
4147 | kid = newop; | |
4148 | kid->op_sibling = sibl; | |
4149 | *tokid = kid; | |
4150 | } | |
8990e307 | 4151 | else if (kid->op_type != OP_RV2HV && kid->op_type != OP_PADHV) |
11343788 | 4152 | bad_type(numargs, "hash", op_desc[o->op_type], kid); |
a0d0e21e | 4153 | mod(kid, type); |
79072805 LW |
4154 | break; |
4155 | case OA_CVREF: | |
4156 | { | |
a0d0e21e | 4157 | OP *newop = newUNOP(OP_NULL, 0, kid); |
79072805 LW |
4158 | kid->op_sibling = 0; |
4159 | linklist(kid); | |
4160 | newop->op_next = newop; | |
4161 | kid = newop; | |
4162 | kid->op_sibling = sibl; | |
4163 | *tokid = kid; | |
4164 | } | |
4165 | break; | |
4166 | case OA_FILEREF: | |
4167 | if (kid->op_type != OP_GV) { | |
4168 | if (kid->op_type == OP_CONST && | |
4169 | (kid->op_private & OPpCONST_BARE)) { | |
4170 | OP *newop = newGVOP(OP_GV, 0, | |
85e6fe83 LW |
4171 | gv_fetchpv(SvPVx(((SVOP*)kid)->op_sv, na), TRUE, |
4172 | SVt_PVIO) ); | |
79072805 LW |
4173 | op_free(kid); |
4174 | kid = newop; | |
4175 | } | |
4176 | else { | |
4177 | kid->op_sibling = 0; | |
4178 | kid = newUNOP(OP_RV2GV, 0, scalar(kid)); | |
4179 | } | |
4180 | kid->op_sibling = sibl; | |
4181 | *tokid = kid; | |
4182 | } | |
4183 | scalar(kid); | |
4184 | break; | |
4185 | case OA_SCALARREF: | |
a0d0e21e | 4186 | mod(scalar(kid), type); |
79072805 LW |
4187 | break; |
4188 | } | |
4189 | oa >>= 4; | |
4190 | tokid = &kid->op_sibling; | |
4191 | kid = kid->op_sibling; | |
4192 | } | |
11343788 | 4193 | o->op_private |= numargs; |
79072805 | 4194 | if (kid) |
11343788 MB |
4195 | return too_many_arguments(o,op_desc[o->op_type]); |
4196 | listkids(o); | |
79072805 | 4197 | } |
a0d0e21e | 4198 | else if (opargs[type] & OA_DEFGV) { |
11343788 | 4199 | op_free(o); |
a0d0e21e LW |
4200 | return newUNOP(type, 0, newSVREF(newGVOP(OP_GV, 0, defgv))); |
4201 | } | |
4202 | ||
79072805 LW |
4203 | if (oa) { |
4204 | while (oa & OA_OPTIONAL) | |
4205 | oa >>= 4; | |
4206 | if (oa && oa != OA_LIST) | |
11343788 | 4207 | return too_few_arguments(o,op_desc[o->op_type]); |
79072805 | 4208 | } |
11343788 | 4209 | return o; |
79072805 LW |
4210 | } |
4211 | ||
4212 | OP * | |
11343788 MB |
4213 | ck_glob(o) |
4214 | OP *o; | |
79072805 | 4215 | { |
b1cb66bf | 4216 | GV *gv = gv_fetchpv("glob", FALSE, SVt_PVCV); |
4217 | ||
4218 | if (gv && GvIMPORTED_CV(gv)) { | |
46fc3d4c | 4219 | static int glob_index; |
4220 | ||
5196be3e | 4221 | append_elem(OP_GLOB, o, |
46fc3d4c | 4222 | newSVOP(OP_CONST, 0, newSViv(glob_index++))); |
5196be3e MB |
4223 | o->op_type = OP_LIST; |
4224 | o->op_ppaddr = ppaddr[OP_LIST]; | |
4225 | cLISTOPo->op_first->op_type = OP_PUSHMARK; | |
4226 | cLISTOPo->op_first->op_ppaddr = ppaddr[OP_PUSHMARK]; | |
4227 | o = newUNOP(OP_ENTERSUB, OPf_STACKED, | |
4228 | append_elem(OP_LIST, o, | |
4229 | scalar(newUNOP(OP_RV2CV, 0, | |
4230 | newGVOP(OP_GV, 0, gv))))); | |
4231 | return ck_subr(o); | |
4232 | } | |
4233 | if ((o->op_flags & OPf_KIDS) && !cLISTOPo->op_first->op_sibling) | |
4234 | append_elem(OP_GLOB, o, newSVREF(newGVOP(OP_GV, 0, defgv))); | |
b1cb66bf | 4235 | gv = newGVgen("main"); |
a0d0e21e | 4236 | gv_IOadd(gv); |
11343788 MB |
4237 | append_elem(OP_GLOB, o, newGVOP(OP_GV, 0, gv)); |
4238 | scalarkids(o); | |
4239 | return ck_fun(o); | |
79072805 LW |
4240 | } |
4241 | ||
4242 | OP * | |
11343788 MB |
4243 | ck_grep(o) |
4244 | OP *o; | |
79072805 LW |
4245 | { |
4246 | LOGOP *gwop; | |
4247 | OP *kid; | |
11343788 | 4248 | OPCODE type = o->op_type == OP_GREPSTART ? OP_GREPWHILE : OP_MAPWHILE; |
79072805 | 4249 | |
11343788 | 4250 | o->op_ppaddr = ppaddr[OP_GREPSTART]; |
a0d0e21e LW |
4251 | Newz(1101, gwop, 1, LOGOP); |
4252 | ||
11343788 | 4253 | if (o->op_flags & OPf_STACKED) { |
a0d0e21e | 4254 | OP* k; |
11343788 MB |
4255 | o = ck_sort(o); |
4256 | kid = cLISTOPo->op_first->op_sibling; | |
4257 | for (k = cLISTOPo->op_first->op_sibling->op_next; k; k = k->op_next) { | |
a0d0e21e LW |
4258 | kid = k; |
4259 | } | |
4260 | kid->op_next = (OP*)gwop; | |
11343788 | 4261 | o->op_flags &= ~OPf_STACKED; |
93a17b20 | 4262 | } |
11343788 | 4263 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e LW |
4264 | if (type == OP_MAPWHILE) |
4265 | list(kid); | |
4266 | else | |
4267 | scalar(kid); | |
11343788 | 4268 | o = ck_fun(o); |
79072805 | 4269 | if (error_count) |
11343788 MB |
4270 | return o; |
4271 | kid = cLISTOPo->op_first->op_sibling; | |
79072805 | 4272 | if (kid->op_type != OP_NULL) |
463ee0b2 | 4273 | croak("panic: ck_grep"); |
79072805 LW |
4274 | kid = kUNOP->op_first; |
4275 | ||
a0d0e21e LW |
4276 | gwop->op_type = type; |
4277 | gwop->op_ppaddr = ppaddr[type]; | |
11343788 | 4278 | gwop->op_first = listkids(o); |
79072805 LW |
4279 | gwop->op_flags |= OPf_KIDS; |
4280 | gwop->op_private = 1; | |
4281 | gwop->op_other = LINKLIST(kid); | |
a0d0e21e | 4282 | gwop->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 LW |
4283 | kid->op_next = (OP*)gwop; |
4284 | ||
11343788 | 4285 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e | 4286 | if (!kid || !kid->op_sibling) |
11343788 | 4287 | return too_few_arguments(o,op_desc[o->op_type]); |
a0d0e21e LW |
4288 | for (kid = kid->op_sibling; kid; kid = kid->op_sibling) |
4289 | mod(kid, OP_GREPSTART); | |
4290 | ||
79072805 LW |
4291 | return (OP*)gwop; |
4292 | } | |
4293 | ||
4294 | OP * | |
11343788 MB |
4295 | ck_index(o) |
4296 | OP *o; | |
79072805 | 4297 | { |
11343788 MB |
4298 | if (o->op_flags & OPf_KIDS) { |
4299 | OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
79072805 | 4300 | if (kid && kid->op_type == OP_CONST) |
bbce6d69 | 4301 | fbm_compile(((SVOP*)kid)->op_sv); |
79072805 | 4302 | } |
11343788 | 4303 | return ck_fun(o); |
79072805 LW |
4304 | } |
4305 | ||
4306 | OP * | |
11343788 MB |
4307 | ck_lengthconst(o) |
4308 | OP *o; | |
79072805 LW |
4309 | { |
4310 | /* XXX length optimization goes here */ | |
11343788 | 4311 | return ck_fun(o); |
79072805 LW |
4312 | } |
4313 | ||
4314 | OP * | |
11343788 MB |
4315 | ck_lfun(o) |
4316 | OP *o; | |
79072805 | 4317 | { |
5dc0d613 MB |
4318 | OPCODE type = o->op_type; |
4319 | return modkids(ck_fun(o), type); | |
79072805 LW |
4320 | } |
4321 | ||
4322 | OP * | |
11343788 MB |
4323 | ck_rfun(o) |
4324 | OP *o; | |
8990e307 | 4325 | { |
5dc0d613 MB |
4326 | OPCODE type = o->op_type; |
4327 | return refkids(ck_fun(o), type); | |
8990e307 LW |
4328 | } |
4329 | ||
4330 | OP * | |
11343788 MB |
4331 | ck_listiob(o) |
4332 | OP *o; | |
79072805 LW |
4333 | { |
4334 | register OP *kid; | |
4335 | ||
11343788 | 4336 | kid = cLISTOPo->op_first; |
79072805 | 4337 | if (!kid) { |
11343788 MB |
4338 | o = force_list(o); |
4339 | kid = cLISTOPo->op_first; | |
79072805 LW |
4340 | } |
4341 | if (kid->op_type == OP_PUSHMARK) | |
4342 | kid = kid->op_sibling; | |
11343788 | 4343 | if (kid && o->op_flags & OPf_STACKED) |
79072805 LW |
4344 | kid = kid->op_sibling; |
4345 | else if (kid && !kid->op_sibling) { /* print HANDLE; */ | |
4346 | if (kid->op_type == OP_CONST && kid->op_private & OPpCONST_BARE) { | |
11343788 | 4347 | o->op_flags |= OPf_STACKED; /* make it a filehandle */ |
748a9306 | 4348 | kid = newUNOP(OP_RV2GV, OPf_REF, scalar(kid)); |
11343788 MB |
4349 | cLISTOPo->op_first->op_sibling = kid; |
4350 | cLISTOPo->op_last = kid; | |
79072805 LW |
4351 | kid = kid->op_sibling; |
4352 | } | |
4353 | } | |
4354 | ||
4355 | if (!kid) | |
11343788 | 4356 | append_elem(o->op_type, o, newSVREF(newGVOP(OP_GV, 0, defgv)) ); |
79072805 | 4357 | |
5dc0d613 | 4358 | o = listkids(o); |
bbce6d69 | 4359 | |
5dc0d613 | 4360 | o->op_private = 0; |
36477c24 | 4361 | #ifdef USE_LOCALE |
bbce6d69 | 4362 | if (hints & HINT_LOCALE) |
5dc0d613 | 4363 | o->op_private |= OPpLOCALE; |
bbce6d69 | 4364 | #endif |
4365 | ||
5dc0d613 | 4366 | return o; |
bbce6d69 | 4367 | } |
4368 | ||
4369 | OP * | |
5dc0d613 MB |
4370 | ck_fun_locale(o) |
4371 | OP *o; | |
bbce6d69 | 4372 | { |
5dc0d613 | 4373 | o = ck_fun(o); |
bbce6d69 | 4374 | |
5dc0d613 | 4375 | o->op_private = 0; |
36477c24 | 4376 | #ifdef USE_LOCALE |
bbce6d69 | 4377 | if (hints & HINT_LOCALE) |
5dc0d613 | 4378 | o->op_private |= OPpLOCALE; |
bbce6d69 | 4379 | #endif |
4380 | ||
5dc0d613 | 4381 | return o; |
bbce6d69 | 4382 | } |
4383 | ||
4384 | OP * | |
5dc0d613 MB |
4385 | ck_scmp(o) |
4386 | OP *o; | |
bbce6d69 | 4387 | { |
5dc0d613 | 4388 | o->op_private = 0; |
36477c24 | 4389 | #ifdef USE_LOCALE |
bbce6d69 | 4390 | if (hints & HINT_LOCALE) |
5dc0d613 | 4391 | o->op_private |= OPpLOCALE; |
bbce6d69 | 4392 | #endif |
36477c24 | 4393 | |
5dc0d613 | 4394 | return o; |
79072805 LW |
4395 | } |
4396 | ||
4397 | OP * | |
11343788 MB |
4398 | ck_match(o) |
4399 | OP *o; | |
79072805 | 4400 | { |
5dc0d613 | 4401 | o->op_private |= OPpRUNTIME; |
11343788 | 4402 | return o; |
79072805 LW |
4403 | } |
4404 | ||
4405 | OP * | |
11343788 MB |
4406 | ck_null(o) |
4407 | OP *o; | |
79072805 | 4408 | { |
11343788 | 4409 | return o; |
79072805 LW |
4410 | } |
4411 | ||
4412 | OP * | |
11343788 MB |
4413 | ck_repeat(o) |
4414 | OP *o; | |
79072805 | 4415 | { |
11343788 MB |
4416 | if (cBINOPo->op_first->op_flags & OPf_PARENS) { |
4417 | o->op_private |= OPpREPEAT_DOLIST; | |
4418 | cBINOPo->op_first = force_list(cBINOPo->op_first); | |
79072805 LW |
4419 | } |
4420 | else | |
11343788 MB |
4421 | scalar(o); |
4422 | return o; | |
79072805 LW |
4423 | } |
4424 | ||
4425 | OP * | |
11343788 MB |
4426 | ck_require(o) |
4427 | OP *o; | |
8990e307 | 4428 | { |
11343788 MB |
4429 | if (o->op_flags & OPf_KIDS) { /* Shall we supply missing .pm? */ |
4430 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
8990e307 LW |
4431 | |
4432 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
8990e307 | 4433 | char *s; |
a0d0e21e LW |
4434 | for (s = SvPVX(kid->op_sv); *s; s++) { |
4435 | if (*s == ':' && s[1] == ':') { | |
4436 | *s = '/'; | |
1aef975c | 4437 | Move(s+2, s+1, strlen(s+2)+1, char); |
a0d0e21e LW |
4438 | --SvCUR(kid->op_sv); |
4439 | } | |
8990e307 | 4440 | } |
a0d0e21e | 4441 | sv_catpvn(kid->op_sv, ".pm", 3); |
8990e307 LW |
4442 | } |
4443 | } | |
11343788 | 4444 | return ck_fun(o); |
8990e307 LW |
4445 | } |
4446 | ||
4447 | OP * | |
11343788 MB |
4448 | ck_retarget(o) |
4449 | OP *o; | |
79072805 | 4450 | { |
463ee0b2 | 4451 | croak("NOT IMPL LINE %d",__LINE__); |
79072805 | 4452 | /* STUB */ |
11343788 | 4453 | return o; |
79072805 LW |
4454 | } |
4455 | ||
4456 | OP * | |
11343788 MB |
4457 | ck_select(o) |
4458 | OP *o; | |
79072805 | 4459 | { |
c07a80fd | 4460 | OP* kid; |
11343788 MB |
4461 | if (o->op_flags & OPf_KIDS) { |
4462 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
2304df62 | 4463 | if (kid && kid->op_sibling) { |
11343788 MB |
4464 | o->op_type = OP_SSELECT; |
4465 | o->op_ppaddr = ppaddr[OP_SSELECT]; | |
4466 | o = ck_fun(o); | |
4467 | return fold_constants(o); | |
79072805 LW |
4468 | } |
4469 | } | |
11343788 MB |
4470 | o = ck_fun(o); |
4471 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
c07a80fd | 4472 | if (kid && kid->op_type == OP_RV2GV) |
4473 | kid->op_private &= ~HINT_STRICT_REFS; | |
11343788 | 4474 | return o; |
79072805 LW |
4475 | } |
4476 | ||
4477 | OP * | |
11343788 MB |
4478 | ck_shift(o) |
4479 | OP *o; | |
79072805 | 4480 | { |
11343788 | 4481 | I32 type = o->op_type; |
79072805 | 4482 | |
11343788 | 4483 | if (!(o->op_flags & OPf_KIDS)) { |
6d4ff0d2 MB |
4484 | OP *argop; |
4485 | ||
11343788 | 4486 | op_free(o); |
6d4ff0d2 MB |
4487 | #ifdef USE_THREADS |
4488 | if (subline) { | |
4489 | argop = newOP(OP_PADAV, OPf_REF); | |
4490 | argop->op_targ = 0; /* curpad[0] is @_ */ | |
4491 | } | |
4492 | else { | |
4493 | argop = newUNOP(OP_RV2AV, 0, | |
4494 | scalar(newGVOP(OP_GV, 0, | |
4495 | gv_fetchpv("ARGV", TRUE, SVt_PVAV)))); | |
4496 | } | |
4497 | #else | |
4498 | argop = newUNOP(OP_RV2AV, 0, | |
4499 | scalar(newGVOP(OP_GV, 0, subline ? | |
4500 | defgv : gv_fetchpv("ARGV", TRUE, SVt_PVAV)))); | |
4501 | #endif /* USE_THREADS */ | |
4502 | return newUNOP(type, 0, scalar(argop)); | |
79072805 | 4503 | } |
11343788 | 4504 | return scalar(modkids(ck_fun(o), type)); |
79072805 LW |
4505 | } |
4506 | ||
4507 | OP * | |
11343788 MB |
4508 | ck_sort(o) |
4509 | OP *o; | |
79072805 | 4510 | { |
5dc0d613 | 4511 | o->op_private = 0; |
36477c24 | 4512 | #ifdef USE_LOCALE |
bbce6d69 | 4513 | if (hints & HINT_LOCALE) |
5dc0d613 | 4514 | o->op_private |= OPpLOCALE; |
bbce6d69 | 4515 | #endif |
4516 | ||
11343788 MB |
4517 | if (o->op_flags & OPf_STACKED) { |
4518 | OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
463ee0b2 LW |
4519 | OP *k; |
4520 | kid = kUNOP->op_first; /* get past rv2gv */ | |
79072805 | 4521 | |
463ee0b2 | 4522 | if (kid->op_type == OP_SCOPE || kid->op_type == OP_LEAVE) { |
79072805 | 4523 | linklist(kid); |
463ee0b2 LW |
4524 | if (kid->op_type == OP_SCOPE) { |
4525 | k = kid->op_next; | |
4526 | kid->op_next = 0; | |
79072805 | 4527 | } |
463ee0b2 | 4528 | else if (kid->op_type == OP_LEAVE) { |
11343788 | 4529 | if (o->op_type == OP_SORT) { |
748a9306 LW |
4530 | null(kid); /* wipe out leave */ |
4531 | kid->op_next = kid; | |
463ee0b2 | 4532 | |
748a9306 LW |
4533 | for (k = kLISTOP->op_first->op_next; k; k = k->op_next) { |
4534 | if (k->op_next == kid) | |
4535 | k->op_next = 0; | |
4536 | } | |
463ee0b2 | 4537 | } |
748a9306 LW |
4538 | else |
4539 | kid->op_next = 0; /* just disconnect the leave */ | |
a0d0e21e | 4540 | k = kLISTOP->op_first; |
463ee0b2 | 4541 | } |
a0d0e21e LW |
4542 | peep(k); |
4543 | ||
11343788 | 4544 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
8990e307 | 4545 | null(kid); /* wipe out rv2gv */ |
11343788 | 4546 | if (o->op_type == OP_SORT) |
a0d0e21e LW |
4547 | kid->op_next = kid; |
4548 | else | |
4549 | kid->op_next = k; | |
11343788 | 4550 | o->op_flags |= OPf_SPECIAL; |
79072805 LW |
4551 | } |
4552 | } | |
bbce6d69 | 4553 | |
11343788 | 4554 | return o; |
79072805 LW |
4555 | } |
4556 | ||
4557 | OP * | |
11343788 MB |
4558 | ck_split(o) |
4559 | OP *o; | |
79072805 LW |
4560 | { |
4561 | register OP *kid; | |
ed6116ce | 4562 | PMOP* pm; |
79072805 | 4563 | |
11343788 MB |
4564 | if (o->op_flags & OPf_STACKED) |
4565 | return no_fh_allowed(o); | |
79072805 | 4566 | |
11343788 | 4567 | kid = cLISTOPo->op_first; |
8990e307 | 4568 | if (kid->op_type != OP_NULL) |
463ee0b2 | 4569 | croak("panic: ck_split"); |
8990e307 | 4570 | kid = kid->op_sibling; |
11343788 MB |
4571 | op_free(cLISTOPo->op_first); |
4572 | cLISTOPo->op_first = kid; | |
85e6fe83 | 4573 | if (!kid) { |
11343788 MB |
4574 | cLISTOPo->op_first = kid = newSVOP(OP_CONST, 0, newSVpv(" ", 1)); |
4575 | cLISTOPo->op_last = kid; /* There was only one element previously */ | |
85e6fe83 | 4576 | } |
79072805 LW |
4577 | |
4578 | if (kid->op_type != OP_MATCH) { | |
4579 | OP *sibl = kid->op_sibling; | |
463ee0b2 | 4580 | kid->op_sibling = 0; |
79072805 | 4581 | kid = pmruntime( newPMOP(OP_MATCH, OPf_SPECIAL), kid, Nullop); |
11343788 MB |
4582 | if (cLISTOPo->op_first == cLISTOPo->op_last) |
4583 | cLISTOPo->op_last = kid; | |
4584 | cLISTOPo->op_first = kid; | |
79072805 LW |
4585 | kid->op_sibling = sibl; |
4586 | } | |
ed6116ce LW |
4587 | pm = (PMOP*)kid; |
4588 | if (pm->op_pmshort && !(pm->op_pmflags & PMf_ALL)) { | |
8990e307 | 4589 | SvREFCNT_dec(pm->op_pmshort); /* can't use substring to optimize */ |
ed6116ce LW |
4590 | pm->op_pmshort = 0; |
4591 | } | |
79072805 LW |
4592 | |
4593 | kid->op_type = OP_PUSHRE; | |
4594 | kid->op_ppaddr = ppaddr[OP_PUSHRE]; | |
4595 | scalar(kid); | |
4596 | ||
4597 | if (!kid->op_sibling) | |
11343788 | 4598 | append_elem(OP_SPLIT, o, newSVREF(newGVOP(OP_GV, 0, defgv)) ); |
79072805 LW |
4599 | |
4600 | kid = kid->op_sibling; | |
4601 | scalar(kid); | |
4602 | ||
4603 | if (!kid->op_sibling) | |
11343788 | 4604 | append_elem(OP_SPLIT, o, newSVOP(OP_CONST, 0, newSViv(0))); |
79072805 LW |
4605 | |
4606 | kid = kid->op_sibling; | |
4607 | scalar(kid); | |
4608 | ||
4609 | if (kid->op_sibling) | |
11343788 | 4610 | return too_many_arguments(o,op_desc[o->op_type]); |
79072805 | 4611 | |
11343788 | 4612 | return o; |
79072805 LW |
4613 | } |
4614 | ||
4615 | OP * | |
11343788 MB |
4616 | ck_subr(o) |
4617 | OP *o; | |
79072805 | 4618 | { |
11343788 MB |
4619 | dTHR; |
4620 | OP *prev = ((cUNOPo->op_first->op_sibling) | |
4621 | ? cUNOPo : ((UNOP*)cUNOPo->op_first))->op_first; | |
4622 | OP *o2 = prev->op_sibling; | |
4633a7c4 LW |
4623 | OP *cvop; |
4624 | char *proto = 0; | |
4625 | CV *cv = 0; | |
46fc3d4c | 4626 | GV *namegv = 0; |
4633a7c4 LW |
4627 | int optional = 0; |
4628 | I32 arg = 0; | |
4629 | ||
11343788 | 4630 | for (cvop = o2; cvop->op_sibling; cvop = cvop->op_sibling) ; |
4633a7c4 LW |
4631 | if (cvop->op_type == OP_RV2CV) { |
4632 | SVOP* tmpop; | |
11343788 | 4633 | o->op_private |= (cvop->op_private & OPpENTERSUB_AMPER); |
4633a7c4 LW |
4634 | null(cvop); /* disable rv2cv */ |
4635 | tmpop = (SVOP*)((UNOP*)cvop)->op_first; | |
4636 | if (tmpop->op_type == OP_GV) { | |
8ebc5c01 | 4637 | cv = GvCVu(tmpop->op_sv); |
5dc0d613 | 4638 | if (cv && SvPOK(cv) && !(o->op_private & OPpENTERSUB_AMPER)) { |
46fc3d4c | 4639 | namegv = CvANON(cv) ? (GV*)tmpop->op_sv : CvGV(cv); |
4640 | proto = SvPV((SV*)cv, na); | |
4641 | } | |
4633a7c4 LW |
4642 | } |
4643 | } | |
11343788 | 4644 | o->op_private |= (hints & HINT_STRICT_REFS); |
8990e307 | 4645 | if (perldb && curstash != debstash) |
11343788 MB |
4646 | o->op_private |= OPpENTERSUB_DB; |
4647 | while (o2 != cvop) { | |
4633a7c4 LW |
4648 | if (proto) { |
4649 | switch (*proto) { | |
4650 | case '\0': | |
5dc0d613 | 4651 | return too_many_arguments(o, gv_ename(namegv)); |
4633a7c4 LW |
4652 | case ';': |
4653 | optional = 1; | |
4654 | proto++; | |
4655 | continue; | |
4656 | case '$': | |
4657 | proto++; | |
4658 | arg++; | |
11343788 | 4659 | scalar(o2); |
4633a7c4 LW |
4660 | break; |
4661 | case '%': | |
4662 | case '@': | |
11343788 | 4663 | list(o2); |
4633a7c4 LW |
4664 | arg++; |
4665 | break; | |
4666 | case '&': | |
4667 | proto++; | |
4668 | arg++; | |
11343788 | 4669 | if (o2->op_type != OP_REFGEN && o2->op_type != OP_UNDEF) |
5dc0d613 | 4670 | bad_type(arg, "block", gv_ename(namegv), o2); |
4633a7c4 LW |
4671 | break; |
4672 | case '*': | |
4673 | proto++; | |
4674 | arg++; | |
11343788 | 4675 | if (o2->op_type == OP_RV2GV) |
4633a7c4 LW |
4676 | goto wrapref; |
4677 | { | |
11343788 MB |
4678 | OP* kid = o2; |
4679 | o2 = newUNOP(OP_RV2GV, 0, kid); | |
4680 | o2->op_sibling = kid->op_sibling; | |
4633a7c4 LW |
4681 | kid->op_sibling = 0; |
4682 | prev->op_sibling = o; | |
4683 | } | |
4684 | goto wrapref; | |
4685 | case '\\': | |
4686 | proto++; | |
4687 | arg++; | |
4688 | switch (*proto++) { | |
4689 | case '*': | |
11343788 | 4690 | if (o2->op_type != OP_RV2GV) |
5dc0d613 | 4691 | bad_type(arg, "symbol", gv_ename(namegv), o2); |
4633a7c4 LW |
4692 | goto wrapref; |
4693 | case '&': | |
11343788 | 4694 | if (o2->op_type != OP_RV2CV) |
5dc0d613 | 4695 | bad_type(arg, "sub", gv_ename(namegv), o2); |
4633a7c4 LW |
4696 | goto wrapref; |
4697 | case '$': | |
11343788 | 4698 | if (o2->op_type != OP_RV2SV && o2->op_type != OP_PADSV) |
5dc0d613 | 4699 | bad_type(arg, "scalar", gv_ename(namegv), o2); |
4633a7c4 LW |
4700 | goto wrapref; |
4701 | case '@': | |
11343788 | 4702 | if (o2->op_type != OP_RV2AV && o2->op_type != OP_PADAV) |
5dc0d613 | 4703 | bad_type(arg, "array", gv_ename(namegv), o2); |
4633a7c4 LW |
4704 | goto wrapref; |
4705 | case '%': | |
11343788 | 4706 | if (o2->op_type != OP_RV2HV && o2->op_type != OP_PADHV) |
5dc0d613 | 4707 | bad_type(arg, "hash", gv_ename(namegv), o2); |
4633a7c4 LW |
4708 | wrapref: |
4709 | { | |
11343788 MB |
4710 | OP* kid = o2; |
4711 | o2 = newUNOP(OP_REFGEN, 0, kid); | |
4712 | o2->op_sibling = kid->op_sibling; | |
4633a7c4 | 4713 | kid->op_sibling = 0; |
e858de61 | 4714 | prev->op_sibling = o2; |
4633a7c4 LW |
4715 | } |
4716 | break; | |
4717 | default: goto oops; | |
4718 | } | |
4719 | break; | |
b1cb66bf | 4720 | case ' ': |
4721 | proto++; | |
4722 | continue; | |
4633a7c4 LW |
4723 | default: |
4724 | oops: | |
4725 | croak("Malformed prototype for %s: %s", | |
46fc3d4c | 4726 | gv_ename(namegv), SvPV((SV*)cv, na)); |
4633a7c4 LW |
4727 | } |
4728 | } | |
4729 | else | |
11343788 MB |
4730 | list(o2); |
4731 | mod(o2, OP_ENTERSUB); | |
4732 | prev = o2; | |
4733 | o2 = o2->op_sibling; | |
4633a7c4 LW |
4734 | } |
4735 | if (proto && !optional && *proto == '$') | |
5dc0d613 | 4736 | return too_few_arguments(o, gv_ename(namegv)); |
11343788 | 4737 | return o; |
79072805 LW |
4738 | } |
4739 | ||
4740 | OP * | |
11343788 MB |
4741 | ck_svconst(o) |
4742 | OP *o; | |
8990e307 | 4743 | { |
11343788 MB |
4744 | SvREADONLY_on(cSVOPo->op_sv); |
4745 | return o; | |
8990e307 LW |
4746 | } |
4747 | ||
4748 | OP * | |
11343788 MB |
4749 | ck_trunc(o) |
4750 | OP *o; | |
79072805 | 4751 | { |
11343788 MB |
4752 | if (o->op_flags & OPf_KIDS) { |
4753 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 | 4754 | |
a0d0e21e LW |
4755 | if (kid->op_type == OP_NULL) |
4756 | kid = (SVOP*)kid->op_sibling; | |
4757 | if (kid && | |
4758 | kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) | |
11343788 | 4759 | o->op_flags |= OPf_SPECIAL; |
79072805 | 4760 | } |
11343788 | 4761 | return ck_fun(o); |
79072805 LW |
4762 | } |
4763 | ||
463ee0b2 LW |
4764 | /* A peephole optimizer. We visit the ops in the order they're to execute. */ |
4765 | ||
79072805 | 4766 | void |
a0d0e21e LW |
4767 | peep(o) |
4768 | register OP* o; | |
79072805 | 4769 | { |
11343788 | 4770 | dTHR; |
79072805 | 4771 | register OP* oldop = 0; |
a0d0e21e | 4772 | if (!o || o->op_seq) |
79072805 | 4773 | return; |
a0d0e21e | 4774 | ENTER; |
462e5cf6 | 4775 | SAVEOP(); |
a0d0e21e LW |
4776 | SAVESPTR(curcop); |
4777 | for (; o; o = o->op_next) { | |
4778 | if (o->op_seq) | |
4779 | break; | |
c07a80fd | 4780 | if (!op_seqmax) |
4781 | op_seqmax++; | |
a0d0e21e LW |
4782 | op = o; |
4783 | switch (o->op_type) { | |
4784 | case OP_NEXTSTATE: | |
4785 | case OP_DBSTATE: | |
4786 | curcop = ((COP*)o); /* for warnings */ | |
c07a80fd | 4787 | o->op_seq = op_seqmax++; |
a0d0e21e LW |
4788 | break; |
4789 | ||
4790 | case OP_CONCAT: | |
4791 | case OP_CONST: | |
4792 | case OP_JOIN: | |
4793 | case OP_UC: | |
4794 | case OP_UCFIRST: | |
4795 | case OP_LC: | |
4796 | case OP_LCFIRST: | |
4797 | case OP_QUOTEMETA: | |
4798 | if (o->op_next->op_type == OP_STRINGIFY) | |
4799 | null(o->op_next); | |
c07a80fd | 4800 | o->op_seq = op_seqmax++; |
a0d0e21e | 4801 | break; |
8990e307 | 4802 | case OP_STUB: |
54310121 | 4803 | if ((o->op_flags & OPf_WANT) != OPf_WANT_LIST) { |
c07a80fd | 4804 | o->op_seq = op_seqmax++; |
54310121 | 4805 | break; /* Scalar stub must produce undef. List stub is noop */ |
8990e307 | 4806 | } |
748a9306 | 4807 | goto nothin; |
79072805 | 4808 | case OP_NULL: |
748a9306 LW |
4809 | if (o->op_targ == OP_NEXTSTATE || o->op_targ == OP_DBSTATE) |
4810 | curcop = ((COP*)op); | |
4811 | goto nothin; | |
79072805 | 4812 | case OP_SCALAR: |
93a17b20 | 4813 | case OP_LINESEQ: |
463ee0b2 | 4814 | case OP_SCOPE: |
748a9306 | 4815 | nothin: |
a0d0e21e LW |
4816 | if (oldop && o->op_next) { |
4817 | oldop->op_next = o->op_next; | |
79072805 LW |
4818 | continue; |
4819 | } | |
c07a80fd | 4820 | o->op_seq = op_seqmax++; |
79072805 LW |
4821 | break; |
4822 | ||
4823 | case OP_GV: | |
a0d0e21e | 4824 | if (o->op_next->op_type == OP_RV2SV) { |
5f05dabc | 4825 | if (!(o->op_next->op_private & OPpDEREF)) { |
a0d0e21e LW |
4826 | null(o->op_next); |
4827 | o->op_private |= o->op_next->op_private & OPpLVAL_INTRO; | |
4828 | o->op_next = o->op_next->op_next; | |
4829 | o->op_type = OP_GVSV; | |
4830 | o->op_ppaddr = ppaddr[OP_GVSV]; | |
8990e307 LW |
4831 | } |
4832 | } | |
a0d0e21e LW |
4833 | else if (o->op_next->op_type == OP_RV2AV) { |
4834 | OP* pop = o->op_next->op_next; | |
4835 | IV i; | |
8990e307 | 4836 | if (pop->op_type == OP_CONST && |
e858de61 | 4837 | (op = pop->op_next) && |
8990e307 | 4838 | pop->op_next->op_type == OP_AELEM && |
a0d0e21e | 4839 | !(pop->op_next->op_private & |
68dc0745 | 4840 | (OPpLVAL_INTRO|OPpLVAL_DEFER|OPpDEREF)) && |
a0d0e21e LW |
4841 | (i = SvIV(((SVOP*)pop)->op_sv) - compiling.cop_arybase) |
4842 | <= 255 && | |
8990e307 LW |
4843 | i >= 0) |
4844 | { | |
748a9306 | 4845 | SvREFCNT_dec(((SVOP*)pop)->op_sv); |
a0d0e21e | 4846 | null(o->op_next); |
8990e307 LW |
4847 | null(pop->op_next); |
4848 | null(pop); | |
a0d0e21e LW |
4849 | o->op_flags |= pop->op_next->op_flags & OPf_MOD; |
4850 | o->op_next = pop->op_next->op_next; | |
4851 | o->op_type = OP_AELEMFAST; | |
4852 | o->op_ppaddr = ppaddr[OP_AELEMFAST]; | |
4853 | o->op_private = (U8)i; | |
a6006777 | 4854 | GvAVn(((GVOP*)o)->op_gv); |
8990e307 | 4855 | } |
79072805 | 4856 | } |
c07a80fd | 4857 | o->op_seq = op_seqmax++; |
79072805 LW |
4858 | break; |
4859 | ||
a0d0e21e | 4860 | case OP_MAPWHILE: |
79072805 LW |
4861 | case OP_GREPWHILE: |
4862 | case OP_AND: | |
4863 | case OP_OR: | |
c07a80fd | 4864 | o->op_seq = op_seqmax++; |
79072805 LW |
4865 | peep(cLOGOP->op_other); |
4866 | break; | |
4867 | ||
4868 | case OP_COND_EXPR: | |
c07a80fd | 4869 | o->op_seq = op_seqmax++; |
79072805 LW |
4870 | peep(cCONDOP->op_true); |
4871 | peep(cCONDOP->op_false); | |
4872 | break; | |
4873 | ||
4874 | case OP_ENTERLOOP: | |
c07a80fd | 4875 | o->op_seq = op_seqmax++; |
79072805 LW |
4876 | peep(cLOOP->op_redoop); |
4877 | peep(cLOOP->op_nextop); | |
4878 | peep(cLOOP->op_lastop); | |
4879 | break; | |
4880 | ||
4881 | case OP_MATCH: | |
4882 | case OP_SUBST: | |
c07a80fd | 4883 | o->op_seq = op_seqmax++; |
a0d0e21e | 4884 | peep(cPMOP->op_pmreplstart); |
79072805 LW |
4885 | break; |
4886 | ||
a0d0e21e | 4887 | case OP_EXEC: |
c07a80fd | 4888 | o->op_seq = op_seqmax++; |
a0d0e21e LW |
4889 | if (dowarn && o->op_next && o->op_next->op_type == OP_NEXTSTATE) { |
4890 | if (o->op_next->op_sibling && | |
4891 | o->op_next->op_sibling->op_type != OP_DIE) { | |
4892 | line_t oldline = curcop->cop_line; | |
4893 | ||
4894 | curcop->cop_line = ((COP*)o->op_next)->cop_line; | |
4895 | warn("Statement unlikely to be reached"); | |
4896 | warn("(Maybe you meant system() when you said exec()?)\n"); | |
4897 | curcop->cop_line = oldline; | |
4898 | } | |
4899 | } | |
4900 | break; | |
c750a3ec MB |
4901 | |
4902 | case OP_HELEM: { | |
4903 | UNOP *rop; | |
4904 | SV *lexname; | |
4905 | GV **fields; | |
4906 | SV **svp, **indsvp; | |
4907 | I32 ind; | |
4908 | char *key; | |
4909 | STRLEN keylen; | |
4910 | ||
4911 | if (o->op_private & (OPpDEREF_HV|OPpDEREF_AV|OPpLVAL_INTRO) | |
4912 | || ((BINOP*)o)->op_last->op_type != OP_CONST) | |
4913 | break; | |
4914 | rop = (UNOP*)((BINOP*)o)->op_first; | |
4915 | if (rop->op_type != OP_RV2HV || rop->op_first->op_type != OP_PADSV) | |
4916 | break; | |
4917 | lexname = *av_fetch(comppad_name, rop->op_first->op_targ, TRUE); | |
4918 | if (!SvOBJECT(lexname)) | |
4919 | break; | |
5196be3e | 4920 | fields = (GV**)hv_fetch(SvSTASH(lexname), "FIELDS", 6, FALSE); |
c750a3ec MB |
4921 | if (!fields || !GvHV(*fields)) |
4922 | break; | |
4923 | svp = &((SVOP*)((BINOP*)o)->op_last)->op_sv; | |
4924 | key = SvPV(*svp, keylen); | |
4925 | indsvp = hv_fetch(GvHV(*fields), key, keylen, FALSE); | |
4926 | if (!indsvp) { | |
4927 | croak("No such field \"%s\" in variable %s of type %s", | |
4928 | key, SvPV(lexname, na), HvNAME(SvSTASH(lexname))); | |
4929 | } | |
4930 | ind = SvIV(*indsvp); | |
4931 | if (ind < 1) | |
4932 | croak("Bad index while coercing array into hash"); | |
4933 | rop->op_type = OP_RV2AV; | |
4934 | rop->op_ppaddr = ppaddr[OP_RV2AV]; | |
4935 | o->op_type = OP_AELEM; | |
4936 | o->op_ppaddr = ppaddr[OP_AELEM]; | |
4937 | SvREFCNT_dec(*svp); | |
4938 | *svp = newSViv(ind); | |
4939 | break; | |
4940 | } | |
4941 | ||
79072805 | 4942 | default: |
c07a80fd | 4943 | o->op_seq = op_seqmax++; |
79072805 LW |
4944 | break; |
4945 | } | |
a0d0e21e | 4946 | oldop = o; |
79072805 | 4947 | } |
a0d0e21e | 4948 | LEAVE; |
79072805 | 4949 | } |