Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* op.c |
79072805 | 2 | * |
9607fc9c | 3 | * Copyright (c) 1991-1997, Larry Wall |
79072805 LW |
4 | * |
5 | * You may distribute under the terms of either the GNU General Public | |
6 | * License or the Artistic License, as specified in the README file. | |
7 | * | |
a0d0e21e LW |
8 | */ |
9 | ||
10 | /* | |
11 | * "You see: Mr. Drogo, he married poor Miss Primula Brandybuck. She was | |
12 | * our Mr. Bilbo's first cousin on the mother's side (her mother being the | |
13 | * youngest of the Old Took's daughters); and Mr. Drogo was his second | |
14 | * cousin. So Mr. Frodo is his first *and* second cousin, once removed | |
15 | * either way, as the saying is, if you follow me." --the Gaffer | |
79072805 LW |
16 | */ |
17 | ||
18 | #include "EXTERN.h" | |
19 | #include "perl.h" | |
20 | ||
76e3520e GS |
21 | #ifdef PERL_OBJECT |
22 | #define CHECKCALL this->*check | |
23 | #else | |
24 | #define CHECKCALL *check | |
25 | #endif | |
26 | ||
e50aee73 | 27 | /* |
5dc0d613 | 28 | * In the following definition, the ", Nullop" is just to make the compiler |
a5f75d66 | 29 | * think the expression is of the right type: croak actually does a Siglongjmp. |
e50aee73 | 30 | */ |
11343788 | 31 | #define CHECKOP(type,o) \ |
28757baa | 32 | ((op_mask && op_mask[type]) \ |
5dc0d613 | 33 | ? ( op_free((OP*)o), \ |
28757baa | 34 | croak("%s trapped by operation mask", op_desc[type]), \ |
35 | Nullop ) \ | |
76e3520e | 36 | : (CHECKCALL[type])((OP*)o)) |
e50aee73 | 37 | |
76e3520e GS |
38 | static bool scalar_mod_type _((OP *o, I32 type)); |
39 | #ifndef PERL_OBJECT | |
11343788 | 40 | static I32 list_assignment _((OP *o)); |
3bc5dc61 | 41 | static void bad_type _((I32 n, char *t, char *name, OP *kid)); |
11343788 MB |
42 | static OP *modkids _((OP *o, I32 type)); |
43 | static OP *no_fh_allowed _((OP *o)); | |
44 | static OP *scalarboolean _((OP *o)); | |
45 | static OP *too_few_arguments _((OP *o, char* name)); | |
46 | static OP *too_many_arguments _((OP *o, char* name)); | |
47 | static void null _((OP* o)); | |
bbce6d69 | 48 | static PADOFFSET pad_findlex _((char* name, PADOFFSET newoff, U32 seq, |
748a9306 | 49 | CV* startcv, I32 cx_ix)); |
54b9620d | 50 | static OP *newDEFSVOP _((void)); |
883ffac3 | 51 | static OP *new_logop _((I32 type, I32 flags, OP **firstp, OP **otherp)); |
76e3520e | 52 | #endif |
79072805 | 53 | |
76e3520e | 54 | STATIC char* |
8ac85365 | 55 | gv_ename(GV *gv) |
4633a7c4 LW |
56 | { |
57 | SV* tmpsv = sv_newmortal(); | |
46fc3d4c | 58 | gv_efullname3(tmpsv, gv, Nullch); |
4633a7c4 LW |
59 | return SvPV(tmpsv,na); |
60 | } | |
61 | ||
76e3520e | 62 | STATIC OP * |
8ac85365 | 63 | no_fh_allowed(OP *o) |
79072805 | 64 | { |
46fc3d4c | 65 | yyerror(form("Missing comma after first argument to %s function", |
5196be3e | 66 | op_desc[o->op_type])); |
11343788 | 67 | return o; |
79072805 LW |
68 | } |
69 | ||
76e3520e | 70 | STATIC OP * |
8ac85365 | 71 | too_few_arguments(OP *o, char *name) |
79072805 | 72 | { |
46fc3d4c | 73 | yyerror(form("Not enough arguments for %s", name)); |
11343788 | 74 | return o; |
79072805 LW |
75 | } |
76 | ||
76e3520e | 77 | STATIC OP * |
8ac85365 | 78 | too_many_arguments(OP *o, char *name) |
79072805 | 79 | { |
46fc3d4c | 80 | yyerror(form("Too many arguments for %s", name)); |
11343788 | 81 | return o; |
79072805 LW |
82 | } |
83 | ||
76e3520e | 84 | STATIC void |
8ac85365 | 85 | bad_type(I32 n, char *t, char *name, OP *kid) |
8990e307 | 86 | { |
46fc3d4c | 87 | yyerror(form("Type of arg %d to %s must be %s (not %s)", |
88 | (int)n, name, t, op_desc[kid->op_type])); | |
8990e307 LW |
89 | } |
90 | ||
a0d0e21e | 91 | void |
8ac85365 | 92 | assertref(OP *o) |
a0d0e21e | 93 | { |
11343788 | 94 | int type = o->op_type; |
a0d0e21e | 95 | if (type != OP_AELEM && type != OP_HELEM) { |
46fc3d4c | 96 | yyerror(form("Can't use subscript on %s", op_desc[type])); |
bde90e66 | 97 | if (type == OP_ENTERSUB || type == OP_RV2HV || type == OP_PADHV) { |
9c82454c | 98 | dTHR; |
bde90e66 HS |
99 | SV *msg = sv_2mortal( |
100 | newSVpvf("(Did you mean $ or @ instead of %c?)\n", | |
101 | type == OP_ENTERSUB ? '&' : '%')); | |
102 | if (in_eval & 2) | |
103 | warn("%_", msg); | |
104 | else if (in_eval) | |
105 | sv_catsv(GvSV(errgv), msg); | |
106 | else | |
107 | PerlIO_write(PerlIO_stderr(), SvPVX(msg), SvCUR(msg)); | |
108 | } | |
a0d0e21e LW |
109 | } |
110 | } | |
111 | ||
79072805 LW |
112 | /* "register" allocation */ |
113 | ||
114 | PADOFFSET | |
8ac85365 | 115 | pad_allocmy(char *name) |
93a17b20 | 116 | { |
11343788 | 117 | dTHR; |
a0d0e21e LW |
118 | PADOFFSET off; |
119 | SV *sv; | |
120 | ||
121 | if (!(isALPHA(name[1]) || name[1] == '_' && (int)strlen(name) > 2)) { | |
46fc3d4c | 122 | if (!isPRINT(name[1])) { |
123 | name[3] = '\0'; | |
124 | name[2] = toCTRL(name[1]); | |
125 | name[1] = '^'; | |
126 | } | |
a0d0e21e LW |
127 | croak("Can't use global %s in \"my\"",name); |
128 | } | |
93965878 | 129 | if (dowarn && AvFILLp(comppad_name) >= 0) { |
b1cb66bf | 130 | SV **svp = AvARRAY(comppad_name); |
93965878 | 131 | for (off = AvFILLp(comppad_name); off > comppad_name_floor; off--) { |
b1cb66bf | 132 | if ((sv = svp[off]) |
133 | && sv != &sv_undef | |
134 | && SvIVX(sv) == 999999999 /* var is in open scope */ | |
135 | && strEQ(name, SvPVX(sv))) | |
136 | { | |
137 | warn("\"my\" variable %s masks earlier declaration in same scope", name); | |
138 | break; | |
139 | } | |
140 | } | |
141 | } | |
a0d0e21e LW |
142 | off = pad_alloc(OP_PADSV, SVs_PADMY); |
143 | sv = NEWSV(1102,0); | |
93a17b20 LW |
144 | sv_upgrade(sv, SVt_PVNV); |
145 | sv_setpv(sv, name); | |
c750a3ec MB |
146 | if (in_my_stash) { |
147 | if (*name != '$') | |
148 | croak("Can't declare class for non-scalar %s in \"my\"",name); | |
149 | SvOBJECT_on(sv); | |
150 | (void)SvUPGRADE(sv, SVt_PVMG); | |
151 | SvSTASH(sv) = (HV*)SvREFCNT_inc(in_my_stash); | |
152 | sv_objcount++; | |
153 | } | |
8990e307 | 154 | av_store(comppad_name, off, sv); |
748a9306 | 155 | SvNVX(sv) = (double)999999999; |
8990e307 LW |
156 | SvIVX(sv) = 0; /* Not yet introduced--see newSTATEOP */ |
157 | if (!min_intro_pending) | |
158 | min_intro_pending = off; | |
159 | max_intro_pending = off; | |
93a17b20 | 160 | if (*name == '@') |
463ee0b2 | 161 | av_store(comppad, off, (SV*)newAV()); |
93a17b20 | 162 | else if (*name == '%') |
463ee0b2 | 163 | av_store(comppad, off, (SV*)newHV()); |
ed6116ce | 164 | SvPADMY_on(curpad[off]); |
93a17b20 LW |
165 | return off; |
166 | } | |
167 | ||
76e3520e | 168 | STATIC PADOFFSET |
bbce6d69 | 169 | pad_findlex(char *name, PADOFFSET newoff, U32 seq, CV* startcv, I32 cx_ix) |
93a17b20 | 170 | { |
11343788 | 171 | dTHR; |
748a9306 | 172 | CV *cv; |
93a17b20 LW |
173 | I32 off; |
174 | SV *sv; | |
93a17b20 | 175 | register I32 i; |
c09156bb | 176 | register PERL_CONTEXT *cx; |
a0d0e21e | 177 | int saweval; |
93a17b20 | 178 | |
748a9306 | 179 | for (cv = startcv; cv; cv = CvOUTSIDE(cv)) { |
4fdae800 | 180 | AV *curlist = CvPADLIST(cv); |
181 | SV **svp = av_fetch(curlist, 0, FALSE); | |
748a9306 | 182 | AV *curname; |
4fdae800 | 183 | |
748a9306 | 184 | if (!svp || *svp == &sv_undef) |
4633a7c4 | 185 | continue; |
748a9306 LW |
186 | curname = (AV*)*svp; |
187 | svp = AvARRAY(curname); | |
93965878 | 188 | for (off = AvFILLp(curname); off > 0; off--) { |
748a9306 LW |
189 | if ((sv = svp[off]) && |
190 | sv != &sv_undef && | |
191 | seq <= SvIVX(sv) && | |
13826f2c | 192 | seq > I_32(SvNVX(sv)) && |
748a9306 LW |
193 | strEQ(SvPVX(sv), name)) |
194 | { | |
5f05dabc | 195 | I32 depth; |
196 | AV *oldpad; | |
197 | SV *oldsv; | |
198 | ||
199 | depth = CvDEPTH(cv); | |
200 | if (!depth) { | |
9607fc9c | 201 | if (newoff) { |
202 | if (SvFAKE(sv)) | |
203 | continue; | |
4fdae800 | 204 | return 0; /* don't clone from inactive stack frame */ |
9607fc9c | 205 | } |
5f05dabc | 206 | depth = 1; |
207 | } | |
208 | oldpad = (AV*)*av_fetch(curlist, depth, FALSE); | |
209 | oldsv = *av_fetch(oldpad, off, TRUE); | |
748a9306 | 210 | if (!newoff) { /* Not a mere clone operation. */ |
9607fc9c | 211 | SV *namesv = NEWSV(1103,0); |
748a9306 | 212 | newoff = pad_alloc(OP_PADSV, SVs_PADMY); |
9607fc9c | 213 | sv_upgrade(namesv, SVt_PVNV); |
214 | sv_setpv(namesv, name); | |
215 | av_store(comppad_name, newoff, namesv); | |
216 | SvNVX(namesv) = (double)curcop->cop_seq; | |
217 | SvIVX(namesv) = 999999999; /* A ref, intro immediately */ | |
218 | SvFAKE_on(namesv); /* A ref, not a real var */ | |
774d564b | 219 | if (CvANON(compcv) || SvTYPE(compcv) == SVt_PVFM) { |
28757baa | 220 | /* "It's closures all the way down." */ |
221 | CvCLONE_on(compcv); | |
54310121 | 222 | if (cv == startcv) { |
223 | if (CvANON(compcv)) | |
224 | oldsv = Nullsv; /* no need to keep ref */ | |
225 | } | |
226 | else { | |
28757baa | 227 | CV *bcv; |
228 | for (bcv = startcv; | |
229 | bcv && bcv != cv && !CvCLONE(bcv); | |
230 | bcv = CvOUTSIDE(bcv)) { | |
231 | if (CvANON(bcv)) | |
232 | CvCLONE_on(bcv); | |
233 | else { | |
774d564b | 234 | if (dowarn && !CvUNIQUE(cv)) |
44a8e56a | 235 | warn( |
236 | "Variable \"%s\" may be unavailable", | |
28757baa | 237 | name); |
238 | break; | |
239 | } | |
240 | } | |
241 | } | |
242 | } | |
44a8e56a | 243 | else if (!CvUNIQUE(compcv)) { |
9607fc9c | 244 | if (dowarn && !SvFAKE(sv) && !CvUNIQUE(cv)) |
44a8e56a | 245 | warn("Variable \"%s\" will not stay shared", name); |
5f05dabc | 246 | } |
748a9306 | 247 | } |
199100c8 | 248 | av_store(comppad, newoff, SvREFCNT_inc(oldsv)); |
748a9306 LW |
249 | return newoff; |
250 | } | |
93a17b20 LW |
251 | } |
252 | } | |
253 | ||
254 | /* Nothing in current lexical context--try eval's context, if any. | |
255 | * This is necessary to let the perldb get at lexically scoped variables. | |
256 | * XXX This will also probably interact badly with eval tree caching. | |
257 | */ | |
258 | ||
a0d0e21e | 259 | saweval = 0; |
748a9306 | 260 | for (i = cx_ix; i >= 0; i--) { |
93a17b20 LW |
261 | cx = &cxstack[i]; |
262 | switch (cx->cx_type) { | |
263 | default: | |
748a9306 LW |
264 | if (i == 0 && saweval) { |
265 | seq = cxstack[saweval].blk_oldcop->cop_seq; | |
266 | return pad_findlex(name, newoff, seq, main_cv, 0); | |
267 | } | |
93a17b20 LW |
268 | break; |
269 | case CXt_EVAL: | |
44a8e56a | 270 | switch (cx->blk_eval.old_op_type) { |
271 | case OP_ENTEREVAL: | |
272 | saweval = i; | |
273 | break; | |
274 | case OP_REQUIRE: | |
275 | /* require must have its own scope */ | |
276 | return 0; | |
277 | } | |
93a17b20 LW |
278 | break; |
279 | case CXt_SUB: | |
280 | if (!saweval) | |
281 | return 0; | |
282 | cv = cx->blk_sub.cv; | |
748a9306 LW |
283 | if (debstash && CvSTASH(cv) == debstash) { /* ignore DB'* scope */ |
284 | saweval = i; /* so we know where we were called from */ | |
93a17b20 | 285 | continue; |
93a17b20 | 286 | } |
748a9306 LW |
287 | seq = cxstack[saweval].blk_oldcop->cop_seq; |
288 | return pad_findlex(name, newoff, seq, cv, i-1); | |
93a17b20 LW |
289 | } |
290 | } | |
291 | ||
748a9306 LW |
292 | return 0; |
293 | } | |
a0d0e21e | 294 | |
748a9306 | 295 | PADOFFSET |
8ac85365 | 296 | pad_findmy(char *name) |
748a9306 | 297 | { |
11343788 | 298 | dTHR; |
748a9306 | 299 | I32 off; |
54310121 | 300 | I32 pendoff = 0; |
748a9306 LW |
301 | SV *sv; |
302 | SV **svp = AvARRAY(comppad_name); | |
bbce6d69 | 303 | U32 seq = cop_seqmax; |
748a9306 | 304 | |
11343788 MB |
305 | #ifdef USE_THREADS |
306 | /* | |
307 | * Special case to get lexical (and hence per-thread) @_. | |
308 | * XXX I need to find out how to tell at parse-time whether use | |
309 | * of @_ should refer to a lexical (from a sub) or defgv (global | |
310 | * scope and maybe weird sub-ish things like formats). See | |
311 | * startsub in perly.y. It's possible that @_ could be lexical | |
312 | * (at least from subs) even in non-threaded perl. | |
313 | */ | |
314 | if (strEQ(name, "@_")) | |
315 | return 0; /* success. (NOT_IN_PAD indicates failure) */ | |
316 | #endif /* USE_THREADS */ | |
317 | ||
748a9306 | 318 | /* The one we're looking for is probably just before comppad_name_fill. */ |
93965878 | 319 | for (off = AvFILLp(comppad_name); off > 0; off--) { |
a0d0e21e LW |
320 | if ((sv = svp[off]) && |
321 | sv != &sv_undef && | |
54310121 | 322 | (!SvIVX(sv) || |
323 | (seq <= SvIVX(sv) && | |
324 | seq > I_32(SvNVX(sv)))) && | |
a0d0e21e LW |
325 | strEQ(SvPVX(sv), name)) |
326 | { | |
54310121 | 327 | if (SvIVX(sv)) |
328 | return (PADOFFSET)off; | |
329 | pendoff = off; /* this pending def. will override import */ | |
a0d0e21e LW |
330 | } |
331 | } | |
748a9306 LW |
332 | |
333 | /* See if it's in a nested scope */ | |
334 | off = pad_findlex(name, 0, seq, CvOUTSIDE(compcv), cxstack_ix); | |
54310121 | 335 | if (off) { |
336 | /* If there is a pending local definition, this new alias must die */ | |
337 | if (pendoff) | |
338 | SvIVX(AvARRAY(comppad_name)[off]) = seq; | |
11343788 | 339 | return off; /* pad_findlex returns 0 for failure...*/ |
54310121 | 340 | } |
11343788 | 341 | return NOT_IN_PAD; /* ...but we return NOT_IN_PAD for failure */ |
93a17b20 LW |
342 | } |
343 | ||
344 | void | |
8ac85365 | 345 | pad_leavemy(I32 fill) |
93a17b20 LW |
346 | { |
347 | I32 off; | |
8990e307 | 348 | SV **svp = AvARRAY(comppad_name); |
93a17b20 | 349 | SV *sv; |
8990e307 LW |
350 | if (min_intro_pending && fill < min_intro_pending) { |
351 | for (off = max_intro_pending; off >= min_intro_pending; off--) { | |
a0d0e21e | 352 | if ((sv = svp[off]) && sv != &sv_undef) |
8990e307 LW |
353 | warn("%s never introduced", SvPVX(sv)); |
354 | } | |
355 | } | |
356 | /* "Deintroduce" my variables that are leaving with this scope. */ | |
93965878 | 357 | for (off = AvFILLp(comppad_name); off > fill; off--) { |
748a9306 | 358 | if ((sv = svp[off]) && sv != &sv_undef && SvIVX(sv) == 999999999) |
463ee0b2 | 359 | SvIVX(sv) = cop_seqmax; |
93a17b20 LW |
360 | } |
361 | } | |
362 | ||
363 | PADOFFSET | |
8ac85365 | 364 | pad_alloc(I32 optype, U32 tmptype) |
79072805 | 365 | { |
11343788 | 366 | dTHR; |
79072805 LW |
367 | SV *sv; |
368 | I32 retval; | |
369 | ||
370 | if (AvARRAY(comppad) != curpad) | |
463ee0b2 | 371 | croak("panic: pad_alloc"); |
a0d0e21e LW |
372 | if (pad_reset_pending) |
373 | pad_reset(); | |
ed6116ce | 374 | if (tmptype & SVs_PADMY) { |
79072805 | 375 | do { |
93965878 | 376 | sv = *av_fetch(comppad, AvFILLp(comppad) + 1, TRUE); |
ed6116ce | 377 | } while (SvPADBUSY(sv)); /* need a fresh one */ |
93965878 | 378 | retval = AvFILLp(comppad); |
79072805 LW |
379 | } |
380 | else { | |
bbce6d69 | 381 | SV **names = AvARRAY(comppad_name); |
93965878 | 382 | SSize_t names_fill = AvFILLp(comppad_name); |
bbce6d69 | 383 | for (;;) { |
384 | /* | |
385 | * "foreach" index vars temporarily become aliases to non-"my" | |
386 | * values. Thus we must skip, not just pad values that are | |
387 | * marked as current pad values, but also those with names. | |
388 | */ | |
389 | if (++padix <= names_fill && | |
390 | (sv = names[padix]) && sv != &sv_undef) | |
391 | continue; | |
392 | sv = *av_fetch(comppad, padix, TRUE); | |
393 | if (!(SvFLAGS(sv) & (SVs_PADTMP|SVs_PADMY))) | |
394 | break; | |
395 | } | |
79072805 LW |
396 | retval = padix; |
397 | } | |
8990e307 | 398 | SvFLAGS(sv) |= tmptype; |
79072805 | 399 | curpad = AvARRAY(comppad); |
11343788 | 400 | #ifdef USE_THREADS |
5dc0d613 MB |
401 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx alloc %ld for %s\n", |
402 | (unsigned long) thr, (unsigned long) curpad, | |
403 | (long) retval, op_name[optype])); | |
11343788 | 404 | #else |
d9bb4600 GS |
405 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx alloc %ld for %s\n", |
406 | (unsigned long) curpad, | |
5dc0d613 | 407 | (long) retval, op_name[optype])); |
11343788 | 408 | #endif /* USE_THREADS */ |
79072805 LW |
409 | return (PADOFFSET)retval; |
410 | } | |
411 | ||
412 | SV * | |
8990e307 | 413 | pad_sv(PADOFFSET po) |
79072805 | 414 | { |
11343788 MB |
415 | dTHR; |
416 | #ifdef USE_THREADS | |
5dc0d613 MB |
417 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx sv %d\n", |
418 | (unsigned long) thr, (unsigned long) curpad, po)); | |
11343788 | 419 | #else |
79072805 | 420 | if (!po) |
463ee0b2 | 421 | croak("panic: pad_sv po"); |
d9bb4600 GS |
422 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx sv %d\n", |
423 | (unsigned long) curpad, po)); | |
11343788 | 424 | #endif /* USE_THREADS */ |
79072805 LW |
425 | return curpad[po]; /* eventually we'll turn this into a macro */ |
426 | } | |
427 | ||
428 | void | |
8990e307 | 429 | pad_free(PADOFFSET po) |
79072805 | 430 | { |
11343788 | 431 | dTHR; |
a0d0e21e LW |
432 | if (!curpad) |
433 | return; | |
79072805 | 434 | if (AvARRAY(comppad) != curpad) |
463ee0b2 | 435 | croak("panic: pad_free curpad"); |
79072805 | 436 | if (!po) |
463ee0b2 | 437 | croak("panic: pad_free po"); |
11343788 | 438 | #ifdef USE_THREADS |
5dc0d613 MB |
439 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx free %d\n", |
440 | (unsigned long) thr, (unsigned long) curpad, po)); | |
11343788 | 441 | #else |
d9bb4600 GS |
442 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx free %d\n", |
443 | (unsigned long) curpad, po)); | |
11343788 | 444 | #endif /* USE_THREADS */ |
a0d0e21e | 445 | if (curpad[po] && curpad[po] != &sv_undef) |
ed6116ce | 446 | SvPADTMP_off(curpad[po]); |
a0d0e21e | 447 | if ((I32)po < padix) |
79072805 LW |
448 | padix = po - 1; |
449 | } | |
450 | ||
451 | void | |
8990e307 | 452 | pad_swipe(PADOFFSET po) |
79072805 | 453 | { |
11343788 | 454 | dTHR; |
79072805 | 455 | if (AvARRAY(comppad) != curpad) |
463ee0b2 | 456 | croak("panic: pad_swipe curpad"); |
79072805 | 457 | if (!po) |
463ee0b2 | 458 | croak("panic: pad_swipe po"); |
11343788 | 459 | #ifdef USE_THREADS |
5dc0d613 MB |
460 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx swipe %d\n", |
461 | (unsigned long) thr, (unsigned long) curpad, po)); | |
11343788 | 462 | #else |
d9bb4600 GS |
463 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx swipe %d\n", |
464 | (unsigned long) curpad, po)); | |
11343788 | 465 | #endif /* USE_THREADS */ |
ed6116ce | 466 | SvPADTMP_off(curpad[po]); |
a0d0e21e LW |
467 | curpad[po] = NEWSV(1107,0); |
468 | SvPADTMP_on(curpad[po]); | |
469 | if ((I32)po < padix) | |
79072805 LW |
470 | padix = po - 1; |
471 | } | |
472 | ||
d9bb4600 GS |
473 | /* XXX pad_reset() is currently disabled because it results in serious bugs. |
474 | * It causes pad temp TARGs to be shared between OPs. Since TARGs are pushed | |
475 | * on the stack by OPs that use them, there are several ways to get an alias | |
476 | * to a shared TARG. Such an alias will change randomly and unpredictably. | |
477 | * We avoid doing this until we can think of a Better Way. | |
478 | * GSAR 97-10-29 */ | |
79072805 | 479 | void |
8ac85365 | 480 | pad_reset(void) |
79072805 | 481 | { |
d9bb4600 | 482 | #ifdef USE_BROKEN_PAD_RESET |
11343788 | 483 | dTHR; |
79072805 LW |
484 | register I32 po; |
485 | ||
486 | if (AvARRAY(comppad) != curpad) | |
463ee0b2 | 487 | croak("panic: pad_reset curpad"); |
11343788 | 488 | #ifdef USE_THREADS |
5dc0d613 MB |
489 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx reset\n", |
490 | (unsigned long) thr, (unsigned long) curpad)); | |
11343788 | 491 | #else |
d9bb4600 GS |
492 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx reset\n", |
493 | (unsigned long) curpad)); | |
11343788 | 494 | #endif /* USE_THREADS */ |
748a9306 LW |
495 | if (!tainting) { /* Can't mix tainted and non-tainted temporaries. */ |
496 | for (po = AvMAX(comppad); po > padix_floor; po--) { | |
ff0cee69 | 497 | if (curpad[po] && !SvIMMORTAL(curpad[po])) |
748a9306 LW |
498 | SvPADTMP_off(curpad[po]); |
499 | } | |
500 | padix = padix_floor; | |
79072805 | 501 | } |
d9bb4600 | 502 | #endif |
a0d0e21e | 503 | pad_reset_pending = FALSE; |
79072805 LW |
504 | } |
505 | ||
a863c7d1 | 506 | #ifdef USE_THREADS |
54b9620d | 507 | /* find_threadsv is not reentrant */ |
a863c7d1 | 508 | PADOFFSET |
54b9620d | 509 | find_threadsv(char *name) |
a863c7d1 MB |
510 | { |
511 | dTHR; | |
512 | char *p; | |
513 | PADOFFSET key; | |
554b3eca | 514 | SV **svp; |
54b9620d MB |
515 | /* We currently only handle names of a single character */ |
516 | p = strchr(threadsv_names, *name); | |
a863c7d1 MB |
517 | if (!p) |
518 | return NOT_IN_PAD; | |
54b9620d MB |
519 | key = p - threadsv_names; |
520 | svp = av_fetch(thr->threadsv, key, FALSE); | |
554b3eca MB |
521 | if (!svp) { |
522 | SV *sv = NEWSV(0, 0); | |
54b9620d | 523 | av_store(thr->threadsv, key, sv); |
940cb80d | 524 | thr->threadsvp = AvARRAY(thr->threadsv); |
554b3eca MB |
525 | /* |
526 | * Some magic variables used to be automagically initialised | |
527 | * in gv_fetchpv. Those which are now per-thread magicals get | |
528 | * initialised here instead. | |
529 | */ | |
530 | switch (*name) { | |
54b9620d MB |
531 | case '_': |
532 | break; | |
554b3eca MB |
533 | case ';': |
534 | sv_setpv(sv, "\034"); | |
54b9620d | 535 | sv_magic(sv, 0, 0, name, 1); |
554b3eca | 536 | break; |
c277df42 IZ |
537 | case '&': |
538 | case '`': | |
539 | case '\'': | |
540 | sawampersand = TRUE; | |
541 | SvREADONLY_on(sv); | |
d8b5173a | 542 | /* FALL THROUGH */ |
067391ea GS |
543 | |
544 | /* XXX %! tied to Errno.pm needs to be added here. | |
545 | * See gv_fetchpv(). */ | |
546 | /* case '!': */ | |
547 | ||
54b9620d MB |
548 | default: |
549 | sv_magic(sv, 0, 0, name, 1); | |
554b3eca | 550 | } |
a863c7d1 | 551 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), |
54b9620d | 552 | "find_threadsv: new SV %p for $%s%c\n", |
554b3eca MB |
553 | sv, (*name < 32) ? "^" : "", |
554 | (*name < 32) ? toCTRL(*name) : *name)); | |
a863c7d1 MB |
555 | } |
556 | return key; | |
557 | } | |
558 | #endif /* USE_THREADS */ | |
559 | ||
79072805 LW |
560 | /* Destructor */ |
561 | ||
562 | void | |
8ac85365 | 563 | op_free(OP *o) |
79072805 | 564 | { |
85e6fe83 | 565 | register OP *kid, *nextkid; |
79072805 | 566 | |
5dc0d613 | 567 | if (!o || o->op_seq == (U16)-1) |
79072805 LW |
568 | return; |
569 | ||
11343788 MB |
570 | if (o->op_flags & OPf_KIDS) { |
571 | for (kid = cUNOPo->op_first; kid; kid = nextkid) { | |
85e6fe83 | 572 | nextkid = kid->op_sibling; /* Get before next freeing kid */ |
79072805 | 573 | op_free(kid); |
85e6fe83 | 574 | } |
79072805 LW |
575 | } |
576 | ||
11343788 | 577 | switch (o->op_type) { |
8990e307 | 578 | case OP_NULL: |
11343788 | 579 | o->op_targ = 0; /* Was holding old type, if any. */ |
8990e307 | 580 | break; |
a0d0e21e | 581 | case OP_ENTEREVAL: |
11343788 | 582 | o->op_targ = 0; /* Was holding hints. */ |
a0d0e21e | 583 | break; |
554b3eca | 584 | #ifdef USE_THREADS |
2faa37cc | 585 | case OP_THREADSV: |
54b9620d | 586 | o->op_targ = 0; /* Was holding index into thr->threadsv AV. */ |
554b3eca MB |
587 | break; |
588 | #endif /* USE_THREADS */ | |
a6006777 | 589 | default: |
ac4c12e7 GS |
590 | if (!(o->op_flags & OPf_REF) |
591 | || (check[o->op_type] != FUNC_NAME_TO_PTR(ck_ftst))) | |
a6006777 | 592 | break; |
593 | /* FALL THROUGH */ | |
463ee0b2 | 594 | case OP_GVSV: |
79072805 | 595 | case OP_GV: |
a6006777 | 596 | case OP_AELEMFAST: |
11343788 | 597 | SvREFCNT_dec(cGVOPo->op_gv); |
8990e307 LW |
598 | break; |
599 | case OP_NEXTSTATE: | |
600 | case OP_DBSTATE: | |
5196be3e | 601 | Safefree(cCOPo->cop_label); |
11343788 | 602 | SvREFCNT_dec(cCOPo->cop_filegv); |
79072805 LW |
603 | break; |
604 | case OP_CONST: | |
11343788 | 605 | SvREFCNT_dec(cSVOPo->op_sv); |
79072805 | 606 | break; |
748a9306 LW |
607 | case OP_GOTO: |
608 | case OP_NEXT: | |
609 | case OP_LAST: | |
610 | case OP_REDO: | |
11343788 | 611 | if (o->op_flags & (OPf_SPECIAL|OPf_STACKED|OPf_KIDS)) |
748a9306 LW |
612 | break; |
613 | /* FALL THROUGH */ | |
a0d0e21e | 614 | case OP_TRANS: |
11343788 | 615 | Safefree(cPVOPo->op_pv); |
a0d0e21e LW |
616 | break; |
617 | case OP_SUBST: | |
11343788 | 618 | op_free(cPMOPo->op_pmreplroot); |
a0d0e21e | 619 | /* FALL THROUGH */ |
748a9306 | 620 | case OP_PUSHRE: |
a0d0e21e | 621 | case OP_MATCH: |
c277df42 | 622 | ReREFCNT_dec(cPMOPo->op_pmregexp); |
a0d0e21e | 623 | break; |
79072805 LW |
624 | } |
625 | ||
11343788 MB |
626 | if (o->op_targ > 0) |
627 | pad_free(o->op_targ); | |
8990e307 | 628 | |
11343788 | 629 | Safefree(o); |
79072805 LW |
630 | } |
631 | ||
76e3520e | 632 | STATIC void |
8ac85365 | 633 | null(OP *o) |
8990e307 | 634 | { |
54b9620d | 635 | if (o->op_type != OP_NULL && o->op_type != OP_THREADSV && o->op_targ > 0) |
11343788 MB |
636 | pad_free(o->op_targ); |
637 | o->op_targ = o->op_type; | |
638 | o->op_type = OP_NULL; | |
639 | o->op_ppaddr = ppaddr[OP_NULL]; | |
8990e307 LW |
640 | } |
641 | ||
79072805 LW |
642 | /* Contextualizers */ |
643 | ||
463ee0b2 | 644 | #define LINKLIST(o) ((o)->op_next ? (o)->op_next : linklist((OP*)o)) |
79072805 LW |
645 | |
646 | OP * | |
8ac85365 | 647 | linklist(OP *o) |
79072805 LW |
648 | { |
649 | register OP *kid; | |
650 | ||
11343788 MB |
651 | if (o->op_next) |
652 | return o->op_next; | |
79072805 LW |
653 | |
654 | /* establish postfix order */ | |
11343788 MB |
655 | if (cUNOPo->op_first) { |
656 | o->op_next = LINKLIST(cUNOPo->op_first); | |
657 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) { | |
79072805 LW |
658 | if (kid->op_sibling) |
659 | kid->op_next = LINKLIST(kid->op_sibling); | |
660 | else | |
11343788 | 661 | kid->op_next = o; |
79072805 LW |
662 | } |
663 | } | |
664 | else | |
11343788 | 665 | o->op_next = o; |
79072805 | 666 | |
11343788 | 667 | return o->op_next; |
79072805 LW |
668 | } |
669 | ||
670 | OP * | |
8ac85365 | 671 | scalarkids(OP *o) |
79072805 LW |
672 | { |
673 | OP *kid; | |
11343788 MB |
674 | if (o && o->op_flags & OPf_KIDS) { |
675 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
79072805 LW |
676 | scalar(kid); |
677 | } | |
11343788 | 678 | return o; |
79072805 LW |
679 | } |
680 | ||
76e3520e | 681 | STATIC OP * |
8ac85365 | 682 | scalarboolean(OP *o) |
8990e307 LW |
683 | { |
684 | if (dowarn && | |
11343788 | 685 | o->op_type == OP_SASSIGN && cBINOPo->op_first->op_type == OP_CONST) { |
0f15f207 | 686 | dTHR; |
a0d0e21e LW |
687 | line_t oldline = curcop->cop_line; |
688 | ||
689 | if (copline != NOLINE) | |
690 | curcop->cop_line = copline; | |
691 | warn("Found = in conditional, should be =="); | |
692 | curcop->cop_line = oldline; | |
693 | } | |
11343788 | 694 | return scalar(o); |
8990e307 LW |
695 | } |
696 | ||
697 | OP * | |
8ac85365 | 698 | scalar(OP *o) |
79072805 LW |
699 | { |
700 | OP *kid; | |
701 | ||
a0d0e21e | 702 | /* assumes no premature commitment */ |
5dc0d613 MB |
703 | if (!o || (o->op_flags & OPf_WANT) || error_count |
704 | || o->op_type == OP_RETURN) | |
11343788 | 705 | return o; |
79072805 | 706 | |
5dc0d613 | 707 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_SCALAR; |
79072805 | 708 | |
11343788 | 709 | switch (o->op_type) { |
79072805 | 710 | case OP_REPEAT: |
11343788 MB |
711 | if (o->op_private & OPpREPEAT_DOLIST) |
712 | null(((LISTOP*)cBINOPo->op_first)->op_first); | |
713 | scalar(cBINOPo->op_first); | |
8990e307 | 714 | break; |
79072805 LW |
715 | case OP_OR: |
716 | case OP_AND: | |
717 | case OP_COND_EXPR: | |
11343788 | 718 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
8990e307 | 719 | scalar(kid); |
79072805 | 720 | break; |
a0d0e21e | 721 | case OP_SPLIT: |
11343788 | 722 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e LW |
723 | if (!kPMOP->op_pmreplroot) |
724 | deprecate("implicit split to @_"); | |
725 | } | |
726 | /* FALL THROUGH */ | |
79072805 LW |
727 | case OP_MATCH: |
728 | case OP_SUBST: | |
729 | case OP_NULL: | |
8990e307 | 730 | default: |
11343788 MB |
731 | if (o->op_flags & OPf_KIDS) { |
732 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) | |
8990e307 LW |
733 | scalar(kid); |
734 | } | |
79072805 LW |
735 | break; |
736 | case OP_LEAVE: | |
737 | case OP_LEAVETRY: | |
5dc0d613 | 738 | kid = cLISTOPo->op_first; |
54310121 | 739 | scalar(kid); |
740 | while (kid = kid->op_sibling) { | |
741 | if (kid->op_sibling) | |
742 | scalarvoid(kid); | |
743 | else | |
744 | scalar(kid); | |
745 | } | |
0f15f207 | 746 | WITH_THR(curcop = &compiling); |
54310121 | 747 | break; |
748a9306 | 748 | case OP_SCOPE: |
79072805 | 749 | case OP_LINESEQ: |
8990e307 | 750 | case OP_LIST: |
11343788 | 751 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
752 | if (kid->op_sibling) |
753 | scalarvoid(kid); | |
754 | else | |
755 | scalar(kid); | |
756 | } | |
0f15f207 | 757 | WITH_THR(curcop = &compiling); |
79072805 LW |
758 | break; |
759 | } | |
11343788 | 760 | return o; |
79072805 LW |
761 | } |
762 | ||
763 | OP * | |
8ac85365 | 764 | scalarvoid(OP *o) |
79072805 LW |
765 | { |
766 | OP *kid; | |
8990e307 LW |
767 | char* useless = 0; |
768 | SV* sv; | |
79072805 | 769 | |
54310121 | 770 | /* assumes no premature commitment */ |
5dc0d613 MB |
771 | if (!o || (o->op_flags & OPf_WANT) == OPf_WANT_LIST || error_count |
772 | || o->op_type == OP_RETURN) | |
11343788 | 773 | return o; |
79072805 | 774 | |
5dc0d613 | 775 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_VOID; |
79072805 | 776 | |
11343788 | 777 | switch (o->op_type) { |
79072805 | 778 | default: |
11343788 | 779 | if (!(opargs[o->op_type] & OA_FOLDCONST)) |
8990e307 | 780 | break; |
36477c24 | 781 | /* FALL THROUGH */ |
782 | case OP_REPEAT: | |
11343788 | 783 | if (o->op_flags & OPf_STACKED) |
8990e307 LW |
784 | break; |
785 | /* FALL THROUGH */ | |
786 | case OP_GVSV: | |
787 | case OP_WANTARRAY: | |
788 | case OP_GV: | |
789 | case OP_PADSV: | |
790 | case OP_PADAV: | |
791 | case OP_PADHV: | |
792 | case OP_PADANY: | |
793 | case OP_AV2ARYLEN: | |
8990e307 | 794 | case OP_REF: |
a0d0e21e LW |
795 | case OP_REFGEN: |
796 | case OP_SREFGEN: | |
8990e307 LW |
797 | case OP_DEFINED: |
798 | case OP_HEX: | |
799 | case OP_OCT: | |
800 | case OP_LENGTH: | |
801 | case OP_SUBSTR: | |
802 | case OP_VEC: | |
803 | case OP_INDEX: | |
804 | case OP_RINDEX: | |
805 | case OP_SPRINTF: | |
806 | case OP_AELEM: | |
807 | case OP_AELEMFAST: | |
808 | case OP_ASLICE: | |
8990e307 LW |
809 | case OP_HELEM: |
810 | case OP_HSLICE: | |
811 | case OP_UNPACK: | |
812 | case OP_PACK: | |
8990e307 LW |
813 | case OP_JOIN: |
814 | case OP_LSLICE: | |
815 | case OP_ANONLIST: | |
816 | case OP_ANONHASH: | |
817 | case OP_SORT: | |
818 | case OP_REVERSE: | |
819 | case OP_RANGE: | |
820 | case OP_FLIP: | |
821 | case OP_FLOP: | |
822 | case OP_CALLER: | |
823 | case OP_FILENO: | |
824 | case OP_EOF: | |
825 | case OP_TELL: | |
826 | case OP_GETSOCKNAME: | |
827 | case OP_GETPEERNAME: | |
828 | case OP_READLINK: | |
829 | case OP_TELLDIR: | |
830 | case OP_GETPPID: | |
831 | case OP_GETPGRP: | |
832 | case OP_GETPRIORITY: | |
833 | case OP_TIME: | |
834 | case OP_TMS: | |
835 | case OP_LOCALTIME: | |
836 | case OP_GMTIME: | |
837 | case OP_GHBYNAME: | |
838 | case OP_GHBYADDR: | |
839 | case OP_GHOSTENT: | |
840 | case OP_GNBYNAME: | |
841 | case OP_GNBYADDR: | |
842 | case OP_GNETENT: | |
843 | case OP_GPBYNAME: | |
844 | case OP_GPBYNUMBER: | |
845 | case OP_GPROTOENT: | |
846 | case OP_GSBYNAME: | |
847 | case OP_GSBYPORT: | |
848 | case OP_GSERVENT: | |
849 | case OP_GPWNAM: | |
850 | case OP_GPWUID: | |
851 | case OP_GGRNAM: | |
852 | case OP_GGRGID: | |
853 | case OP_GETLOGIN: | |
11343788 MB |
854 | if (!(o->op_private & OPpLVAL_INTRO)) |
855 | useless = op_desc[o->op_type]; | |
8990e307 LW |
856 | break; |
857 | ||
858 | case OP_RV2GV: | |
859 | case OP_RV2SV: | |
860 | case OP_RV2AV: | |
861 | case OP_RV2HV: | |
11343788 MB |
862 | if (!(o->op_private & OPpLVAL_INTRO) && |
863 | (!o->op_sibling || o->op_sibling->op_type != OP_READLINE)) | |
8990e307 LW |
864 | useless = "a variable"; |
865 | break; | |
79072805 | 866 | |
93a17b20 | 867 | case OP_NEXTSTATE: |
8990e307 | 868 | case OP_DBSTATE: |
0f15f207 | 869 | WITH_THR(curcop = ((COP*)o)); /* for warning below */ |
93a17b20 LW |
870 | break; |
871 | ||
79072805 | 872 | case OP_CONST: |
11343788 | 873 | sv = cSVOPo->op_sv; |
8990e307 LW |
874 | if (dowarn) { |
875 | useless = "a constant"; | |
876 | if (SvNIOK(sv) && (SvNV(sv) == 0.0 || SvNV(sv) == 1.0)) | |
877 | useless = 0; | |
878 | else if (SvPOK(sv)) { | |
879 | if (strnEQ(SvPVX(sv), "di", 2) || | |
a0d0e21e | 880 | strnEQ(SvPVX(sv), "ds", 2) || |
8990e307 LW |
881 | strnEQ(SvPVX(sv), "ig", 2)) |
882 | useless = 0; | |
883 | } | |
884 | } | |
11343788 | 885 | null(o); /* don't execute a constant */ |
8990e307 | 886 | SvREFCNT_dec(sv); /* don't even remember it */ |
79072805 LW |
887 | break; |
888 | ||
889 | case OP_POSTINC: | |
11343788 MB |
890 | o->op_type = OP_PREINC; /* pre-increment is faster */ |
891 | o->op_ppaddr = ppaddr[OP_PREINC]; | |
79072805 LW |
892 | break; |
893 | ||
894 | case OP_POSTDEC: | |
11343788 MB |
895 | o->op_type = OP_PREDEC; /* pre-decrement is faster */ |
896 | o->op_ppaddr = ppaddr[OP_PREDEC]; | |
79072805 LW |
897 | break; |
898 | ||
79072805 LW |
899 | case OP_OR: |
900 | case OP_AND: | |
901 | case OP_COND_EXPR: | |
11343788 | 902 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
903 | scalarvoid(kid); |
904 | break; | |
5aabfad6 | 905 | |
a0d0e21e | 906 | case OP_NULL: |
11343788 | 907 | if (o->op_targ == OP_NEXTSTATE || o->op_targ == OP_DBSTATE) |
0f15f207 | 908 | WITH_THR(curcop = ((COP*)o)); /* for warning below */ |
11343788 | 909 | if (o->op_flags & OPf_STACKED) |
a0d0e21e | 910 | break; |
5aabfad6 | 911 | /* FALL THROUGH */ |
79072805 LW |
912 | case OP_ENTERTRY: |
913 | case OP_ENTER: | |
914 | case OP_SCALAR: | |
11343788 | 915 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 916 | break; |
54310121 | 917 | /* FALL THROUGH */ |
463ee0b2 | 918 | case OP_SCOPE: |
79072805 LW |
919 | case OP_LEAVE: |
920 | case OP_LEAVETRY: | |
a0d0e21e | 921 | case OP_LEAVELOOP: |
79072805 | 922 | case OP_LINESEQ: |
79072805 | 923 | case OP_LIST: |
11343788 | 924 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
925 | scalarvoid(kid); |
926 | break; | |
c90c0ff4 | 927 | case OP_ENTEREVAL: |
5196be3e | 928 | scalarkids(o); |
c90c0ff4 | 929 | break; |
5aabfad6 | 930 | case OP_REQUIRE: |
c90c0ff4 | 931 | /* all requires must return a boolean value */ |
5196be3e MB |
932 | o->op_flags &= ~OPf_WANT; |
933 | return scalar(o); | |
a0d0e21e | 934 | case OP_SPLIT: |
11343788 | 935 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e LW |
936 | if (!kPMOP->op_pmreplroot) |
937 | deprecate("implicit split to @_"); | |
938 | } | |
939 | break; | |
79072805 | 940 | } |
8990e307 LW |
941 | if (useless && dowarn) |
942 | warn("Useless use of %s in void context", useless); | |
11343788 | 943 | return o; |
79072805 LW |
944 | } |
945 | ||
946 | OP * | |
8ac85365 | 947 | listkids(OP *o) |
79072805 LW |
948 | { |
949 | OP *kid; | |
11343788 MB |
950 | if (o && o->op_flags & OPf_KIDS) { |
951 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
79072805 LW |
952 | list(kid); |
953 | } | |
11343788 | 954 | return o; |
79072805 LW |
955 | } |
956 | ||
957 | OP * | |
8ac85365 | 958 | list(OP *o) |
79072805 LW |
959 | { |
960 | OP *kid; | |
961 | ||
a0d0e21e | 962 | /* assumes no premature commitment */ |
5dc0d613 MB |
963 | if (!o || (o->op_flags & OPf_WANT) || error_count |
964 | || o->op_type == OP_RETURN) | |
11343788 | 965 | return o; |
79072805 | 966 | |
5dc0d613 | 967 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_LIST; |
79072805 | 968 | |
11343788 | 969 | switch (o->op_type) { |
79072805 LW |
970 | case OP_FLOP: |
971 | case OP_REPEAT: | |
11343788 | 972 | list(cBINOPo->op_first); |
79072805 LW |
973 | break; |
974 | case OP_OR: | |
975 | case OP_AND: | |
976 | case OP_COND_EXPR: | |
11343788 | 977 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
978 | list(kid); |
979 | break; | |
980 | default: | |
981 | case OP_MATCH: | |
982 | case OP_SUBST: | |
983 | case OP_NULL: | |
11343788 | 984 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 985 | break; |
11343788 MB |
986 | if (!o->op_next && cUNOPo->op_first->op_type == OP_FLOP) { |
987 | list(cBINOPo->op_first); | |
988 | return gen_constant_list(o); | |
79072805 LW |
989 | } |
990 | case OP_LIST: | |
11343788 | 991 | listkids(o); |
79072805 LW |
992 | break; |
993 | case OP_LEAVE: | |
994 | case OP_LEAVETRY: | |
5dc0d613 | 995 | kid = cLISTOPo->op_first; |
54310121 | 996 | list(kid); |
997 | while (kid = kid->op_sibling) { | |
998 | if (kid->op_sibling) | |
999 | scalarvoid(kid); | |
1000 | else | |
1001 | list(kid); | |
1002 | } | |
0f15f207 | 1003 | WITH_THR(curcop = &compiling); |
54310121 | 1004 | break; |
748a9306 | 1005 | case OP_SCOPE: |
79072805 | 1006 | case OP_LINESEQ: |
11343788 | 1007 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
1008 | if (kid->op_sibling) |
1009 | scalarvoid(kid); | |
1010 | else | |
1011 | list(kid); | |
1012 | } | |
0f15f207 | 1013 | WITH_THR(curcop = &compiling); |
79072805 | 1014 | break; |
c90c0ff4 | 1015 | case OP_REQUIRE: |
1016 | /* all requires must return a boolean value */ | |
5196be3e MB |
1017 | o->op_flags &= ~OPf_WANT; |
1018 | return scalar(o); | |
79072805 | 1019 | } |
11343788 | 1020 | return o; |
79072805 LW |
1021 | } |
1022 | ||
1023 | OP * | |
8ac85365 | 1024 | scalarseq(OP *o) |
79072805 LW |
1025 | { |
1026 | OP *kid; | |
1027 | ||
11343788 MB |
1028 | if (o) { |
1029 | if (o->op_type == OP_LINESEQ || | |
1030 | o->op_type == OP_SCOPE || | |
1031 | o->op_type == OP_LEAVE || | |
1032 | o->op_type == OP_LEAVETRY) | |
463ee0b2 | 1033 | { |
0f15f207 | 1034 | dTHR; |
11343788 | 1035 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
ed6116ce | 1036 | if (kid->op_sibling) { |
463ee0b2 | 1037 | scalarvoid(kid); |
ed6116ce | 1038 | } |
463ee0b2 LW |
1039 | } |
1040 | curcop = &compiling; | |
79072805 | 1041 | } |
11343788 | 1042 | o->op_flags &= ~OPf_PARENS; |
85e6fe83 | 1043 | if (hints & HINT_BLOCK_SCOPE) |
11343788 | 1044 | o->op_flags |= OPf_PARENS; |
79072805 | 1045 | } |
8990e307 | 1046 | else |
11343788 MB |
1047 | o = newOP(OP_STUB, 0); |
1048 | return o; | |
79072805 LW |
1049 | } |
1050 | ||
76e3520e | 1051 | STATIC OP * |
8ac85365 | 1052 | modkids(OP *o, I32 type) |
79072805 LW |
1053 | { |
1054 | OP *kid; | |
11343788 MB |
1055 | if (o && o->op_flags & OPf_KIDS) { |
1056 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
463ee0b2 | 1057 | mod(kid, type); |
79072805 | 1058 | } |
11343788 | 1059 | return o; |
79072805 LW |
1060 | } |
1061 | ||
79072805 | 1062 | OP * |
8ac85365 | 1063 | mod(OP *o, I32 type) |
79072805 | 1064 | { |
11343788 | 1065 | dTHR; |
79072805 LW |
1066 | OP *kid; |
1067 | SV *sv; | |
1068 | ||
11343788 MB |
1069 | if (!o || error_count) |
1070 | return o; | |
79072805 | 1071 | |
11343788 | 1072 | switch (o->op_type) { |
68dc0745 | 1073 | case OP_UNDEF: |
3e3baf6d | 1074 | modcount++; |
5dc0d613 | 1075 | return o; |
a0d0e21e | 1076 | case OP_CONST: |
11343788 | 1077 | if (!(o->op_private & (OPpCONST_ARYBASE))) |
a0d0e21e LW |
1078 | goto nomod; |
1079 | if (eval_start && eval_start->op_type == OP_CONST) { | |
1080 | compiling.cop_arybase = (I32)SvIV(((SVOP*)eval_start)->op_sv); | |
1081 | eval_start = 0; | |
1082 | } | |
1083 | else if (!type) { | |
1084 | SAVEI32(compiling.cop_arybase); | |
748a9306 | 1085 | compiling.cop_arybase = 0; |
a0d0e21e LW |
1086 | } |
1087 | else if (type == OP_REFGEN) | |
1088 | goto nomod; | |
1089 | else | |
1090 | croak("That use of $[ is unsupported"); | |
1091 | break; | |
5f05dabc | 1092 | case OP_STUB: |
5196be3e | 1093 | if (o->op_flags & OPf_PARENS) |
5f05dabc | 1094 | break; |
1095 | goto nomod; | |
a0d0e21e LW |
1096 | case OP_ENTERSUB: |
1097 | if ((type == OP_UNDEF || type == OP_REFGEN) && | |
11343788 MB |
1098 | !(o->op_flags & OPf_STACKED)) { |
1099 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
1100 | o->op_ppaddr = ppaddr[OP_RV2CV]; | |
1101 | assert(cUNOPo->op_first->op_type == OP_NULL); | |
1102 | null(((LISTOP*)cUNOPo->op_first)->op_first);/* disable pushmark */ | |
79072805 LW |
1103 | break; |
1104 | } | |
1105 | /* FALL THROUGH */ | |
1106 | default: | |
a0d0e21e LW |
1107 | nomod: |
1108 | /* grep, foreach, subcalls, refgen */ | |
1109 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) | |
1110 | break; | |
46fc3d4c | 1111 | yyerror(form("Can't modify %s in %s", |
5dc0d613 | 1112 | op_desc[o->op_type], |
46fc3d4c | 1113 | type ? op_desc[type] : "local")); |
11343788 | 1114 | return o; |
79072805 | 1115 | |
a0d0e21e LW |
1116 | case OP_PREINC: |
1117 | case OP_PREDEC: | |
1118 | case OP_POW: | |
1119 | case OP_MULTIPLY: | |
1120 | case OP_DIVIDE: | |
1121 | case OP_MODULO: | |
1122 | case OP_REPEAT: | |
1123 | case OP_ADD: | |
1124 | case OP_SUBTRACT: | |
1125 | case OP_CONCAT: | |
1126 | case OP_LEFT_SHIFT: | |
1127 | case OP_RIGHT_SHIFT: | |
1128 | case OP_BIT_AND: | |
1129 | case OP_BIT_XOR: | |
1130 | case OP_BIT_OR: | |
1131 | case OP_I_MULTIPLY: | |
1132 | case OP_I_DIVIDE: | |
1133 | case OP_I_MODULO: | |
1134 | case OP_I_ADD: | |
1135 | case OP_I_SUBTRACT: | |
11343788 | 1136 | if (!(o->op_flags & OPf_STACKED)) |
a0d0e21e LW |
1137 | goto nomod; |
1138 | modcount++; | |
1139 | break; | |
1140 | ||
79072805 | 1141 | case OP_COND_EXPR: |
11343788 | 1142 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 | 1143 | mod(kid, type); |
79072805 LW |
1144 | break; |
1145 | ||
1146 | case OP_RV2AV: | |
1147 | case OP_RV2HV: | |
93af7a87 | 1148 | if (!type && cUNOPo->op_first->op_type != OP_GV) |
706a304b | 1149 | croak("Can't localize through a reference"); |
11343788 | 1150 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) { |
748a9306 | 1151 | modcount = 10000; |
11343788 | 1152 | return o; /* Treat \(@foo) like ordinary list. */ |
748a9306 LW |
1153 | } |
1154 | /* FALL THROUGH */ | |
79072805 | 1155 | case OP_RV2GV: |
5dc0d613 | 1156 | if (scalar_mod_type(o, type)) |
3fe9a6f1 | 1157 | goto nomod; |
11343788 | 1158 | ref(cUNOPo->op_first, o->op_type); |
79072805 LW |
1159 | /* FALL THROUGH */ |
1160 | case OP_AASSIGN: | |
1161 | case OP_ASLICE: | |
1162 | case OP_HSLICE: | |
93a17b20 LW |
1163 | case OP_NEXTSTATE: |
1164 | case OP_DBSTATE: | |
a0d0e21e LW |
1165 | case OP_REFGEN: |
1166 | case OP_CHOMP: | |
463ee0b2 | 1167 | modcount = 10000; |
79072805 | 1168 | break; |
463ee0b2 | 1169 | case OP_RV2SV: |
11343788 | 1170 | if (!type && cUNOPo->op_first->op_type != OP_GV) |
706a304b | 1171 | croak("Can't localize through a reference"); |
aeea060c | 1172 | ref(cUNOPo->op_first, o->op_type); |
463ee0b2 | 1173 | /* FALL THROUGH */ |
79072805 | 1174 | case OP_GV: |
463ee0b2 | 1175 | case OP_AV2ARYLEN: |
85aff577 | 1176 | hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 1177 | case OP_SASSIGN: |
8990e307 LW |
1178 | case OP_AELEMFAST: |
1179 | modcount++; | |
1180 | break; | |
1181 | ||
748a9306 LW |
1182 | case OP_PADAV: |
1183 | case OP_PADHV: | |
1184 | modcount = 10000; | |
5196be3e MB |
1185 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) |
1186 | return o; /* Treat \(@foo) like ordinary list. */ | |
1187 | if (scalar_mod_type(o, type)) | |
3fe9a6f1 | 1188 | goto nomod; |
748a9306 LW |
1189 | /* FALL THROUGH */ |
1190 | case OP_PADSV: | |
1191 | modcount++; | |
1192 | if (!type) | |
1193 | croak("Can't localize lexical variable %s", | |
11343788 | 1194 | SvPV(*av_fetch(comppad_name, o->op_targ, 4), na)); |
463ee0b2 LW |
1195 | break; |
1196 | ||
554b3eca | 1197 | #ifdef USE_THREADS |
2faa37cc | 1198 | case OP_THREADSV: |
554b3eca | 1199 | modcount++; /* XXX ??? */ |
554b3eca MB |
1200 | break; |
1201 | #endif /* USE_THREADS */ | |
1202 | ||
748a9306 LW |
1203 | case OP_PUSHMARK: |
1204 | break; | |
a0d0e21e | 1205 | |
69969c6f SB |
1206 | case OP_KEYS: |
1207 | if (type != OP_SASSIGN) | |
1208 | goto nomod; | |
5f05dabc | 1209 | /* FALL THROUGH */ |
a0d0e21e | 1210 | case OP_POS: |
463ee0b2 | 1211 | case OP_VEC: |
a0d0e21e | 1212 | case OP_SUBSTR: |
11343788 MB |
1213 | pad_free(o->op_targ); |
1214 | o->op_targ = pad_alloc(o->op_type, SVs_PADMY); | |
5dc0d613 | 1215 | assert(SvTYPE(PAD_SV(o->op_targ)) == SVt_NULL); |
11343788 MB |
1216 | if (o->op_flags & OPf_KIDS) |
1217 | mod(cBINOPo->op_first->op_sibling, type); | |
463ee0b2 | 1218 | break; |
a0d0e21e | 1219 | |
463ee0b2 LW |
1220 | case OP_AELEM: |
1221 | case OP_HELEM: | |
11343788 | 1222 | ref(cBINOPo->op_first, o->op_type); |
68dc0745 | 1223 | if (type == OP_ENTERSUB && |
5dc0d613 MB |
1224 | !(o->op_private & (OPpLVAL_INTRO | OPpDEREF))) |
1225 | o->op_private |= OPpLVAL_DEFER; | |
a0d0e21e | 1226 | modcount++; |
463ee0b2 LW |
1227 | break; |
1228 | ||
1229 | case OP_SCOPE: | |
1230 | case OP_LEAVE: | |
1231 | case OP_ENTER: | |
11343788 MB |
1232 | if (o->op_flags & OPf_KIDS) |
1233 | mod(cLISTOPo->op_last, type); | |
a0d0e21e LW |
1234 | break; |
1235 | ||
1236 | case OP_NULL: | |
11343788 | 1237 | if (!(o->op_flags & OPf_KIDS)) |
463ee0b2 | 1238 | break; |
11343788 MB |
1239 | if (o->op_targ != OP_LIST) { |
1240 | mod(cBINOPo->op_first, type); | |
a0d0e21e LW |
1241 | break; |
1242 | } | |
1243 | /* FALL THROUGH */ | |
463ee0b2 | 1244 | case OP_LIST: |
11343788 | 1245 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1246 | mod(kid, type); |
1247 | break; | |
1248 | } | |
11343788 | 1249 | o->op_flags |= OPf_MOD; |
a0d0e21e LW |
1250 | |
1251 | if (type == OP_AASSIGN || type == OP_SASSIGN) | |
11343788 | 1252 | o->op_flags |= OPf_SPECIAL|OPf_REF; |
a0d0e21e | 1253 | else if (!type) { |
11343788 MB |
1254 | o->op_private |= OPpLVAL_INTRO; |
1255 | o->op_flags &= ~OPf_SPECIAL; | |
ca48fea7 | 1256 | hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 1257 | } |
a0d0e21e | 1258 | else if (type != OP_GREPSTART && type != OP_ENTERSUB) |
11343788 MB |
1259 | o->op_flags |= OPf_REF; |
1260 | return o; | |
463ee0b2 LW |
1261 | } |
1262 | ||
3fe9a6f1 | 1263 | static bool |
8ac85365 | 1264 | scalar_mod_type(OP *o, I32 type) |
3fe9a6f1 | 1265 | { |
1266 | switch (type) { | |
1267 | case OP_SASSIGN: | |
5196be3e | 1268 | if (o->op_type == OP_RV2GV) |
3fe9a6f1 | 1269 | return FALSE; |
1270 | /* FALL THROUGH */ | |
1271 | case OP_PREINC: | |
1272 | case OP_PREDEC: | |
1273 | case OP_POSTINC: | |
1274 | case OP_POSTDEC: | |
1275 | case OP_I_PREINC: | |
1276 | case OP_I_PREDEC: | |
1277 | case OP_I_POSTINC: | |
1278 | case OP_I_POSTDEC: | |
1279 | case OP_POW: | |
1280 | case OP_MULTIPLY: | |
1281 | case OP_DIVIDE: | |
1282 | case OP_MODULO: | |
1283 | case OP_REPEAT: | |
1284 | case OP_ADD: | |
1285 | case OP_SUBTRACT: | |
1286 | case OP_I_MULTIPLY: | |
1287 | case OP_I_DIVIDE: | |
1288 | case OP_I_MODULO: | |
1289 | case OP_I_ADD: | |
1290 | case OP_I_SUBTRACT: | |
1291 | case OP_LEFT_SHIFT: | |
1292 | case OP_RIGHT_SHIFT: | |
1293 | case OP_BIT_AND: | |
1294 | case OP_BIT_XOR: | |
1295 | case OP_BIT_OR: | |
1296 | case OP_CONCAT: | |
1297 | case OP_SUBST: | |
1298 | case OP_TRANS: | |
1299 | case OP_ANDASSIGN: /* may work later */ | |
1300 | case OP_ORASSIGN: /* may work later */ | |
1301 | return TRUE; | |
1302 | default: | |
1303 | return FALSE; | |
1304 | } | |
1305 | } | |
1306 | ||
463ee0b2 | 1307 | OP * |
8ac85365 | 1308 | refkids(OP *o, I32 type) |
463ee0b2 LW |
1309 | { |
1310 | OP *kid; | |
11343788 MB |
1311 | if (o && o->op_flags & OPf_KIDS) { |
1312 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
463ee0b2 LW |
1313 | ref(kid, type); |
1314 | } | |
11343788 | 1315 | return o; |
463ee0b2 LW |
1316 | } |
1317 | ||
1318 | OP * | |
8ac85365 | 1319 | ref(OP *o, I32 type) |
463ee0b2 LW |
1320 | { |
1321 | OP *kid; | |
463ee0b2 | 1322 | |
11343788 MB |
1323 | if (!o || error_count) |
1324 | return o; | |
463ee0b2 | 1325 | |
11343788 | 1326 | switch (o->op_type) { |
a0d0e21e | 1327 | case OP_ENTERSUB: |
e55aaa0e | 1328 | if ((type == OP_DEFINED || type == OP_LOCK) && |
11343788 MB |
1329 | !(o->op_flags & OPf_STACKED)) { |
1330 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
1331 | o->op_ppaddr = ppaddr[OP_RV2CV]; | |
1332 | assert(cUNOPo->op_first->op_type == OP_NULL); | |
1333 | null(((LISTOP*)cUNOPo->op_first)->op_first); /* disable pushmark */ | |
1334 | o->op_flags |= OPf_SPECIAL; | |
8990e307 LW |
1335 | } |
1336 | break; | |
aeea060c | 1337 | |
463ee0b2 | 1338 | case OP_COND_EXPR: |
11343788 | 1339 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1340 | ref(kid, type); |
1341 | break; | |
8990e307 | 1342 | case OP_RV2SV: |
11343788 | 1343 | ref(cUNOPo->op_first, o->op_type); |
4633a7c4 LW |
1344 | /* FALL THROUGH */ |
1345 | case OP_PADSV: | |
5f05dabc | 1346 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1347 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1348 | : type == OP_RV2HV ? OPpDEREF_HV | |
1349 | : OPpDEREF_SV); | |
11343788 | 1350 | o->op_flags |= OPf_MOD; |
a0d0e21e | 1351 | } |
8990e307 LW |
1352 | break; |
1353 | ||
2faa37cc | 1354 | case OP_THREADSV: |
a863c7d1 MB |
1355 | o->op_flags |= OPf_MOD; /* XXX ??? */ |
1356 | break; | |
1357 | ||
463ee0b2 LW |
1358 | case OP_RV2AV: |
1359 | case OP_RV2HV: | |
aeea060c | 1360 | o->op_flags |= OPf_REF; |
8990e307 | 1361 | /* FALL THROUGH */ |
463ee0b2 | 1362 | case OP_RV2GV: |
11343788 | 1363 | ref(cUNOPo->op_first, o->op_type); |
463ee0b2 | 1364 | break; |
8990e307 | 1365 | |
463ee0b2 LW |
1366 | case OP_PADAV: |
1367 | case OP_PADHV: | |
aeea060c | 1368 | o->op_flags |= OPf_REF; |
79072805 | 1369 | break; |
aeea060c | 1370 | |
8990e307 | 1371 | case OP_SCALAR: |
79072805 | 1372 | case OP_NULL: |
11343788 | 1373 | if (!(o->op_flags & OPf_KIDS)) |
463ee0b2 | 1374 | break; |
11343788 | 1375 | ref(cBINOPo->op_first, type); |
79072805 LW |
1376 | break; |
1377 | case OP_AELEM: | |
1378 | case OP_HELEM: | |
11343788 | 1379 | ref(cBINOPo->op_first, o->op_type); |
5f05dabc | 1380 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1381 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1382 | : type == OP_RV2HV ? OPpDEREF_HV | |
1383 | : OPpDEREF_SV); | |
11343788 | 1384 | o->op_flags |= OPf_MOD; |
8990e307 | 1385 | } |
79072805 LW |
1386 | break; |
1387 | ||
463ee0b2 | 1388 | case OP_SCOPE: |
79072805 LW |
1389 | case OP_LEAVE: |
1390 | case OP_ENTER: | |
8990e307 | 1391 | case OP_LIST: |
11343788 | 1392 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1393 | break; |
11343788 | 1394 | ref(cLISTOPo->op_last, type); |
79072805 | 1395 | break; |
a0d0e21e LW |
1396 | default: |
1397 | break; | |
79072805 | 1398 | } |
11343788 | 1399 | return scalar(o); |
8990e307 | 1400 | |
79072805 LW |
1401 | } |
1402 | ||
1403 | OP * | |
8ac85365 | 1404 | my(OP *o) |
93a17b20 LW |
1405 | { |
1406 | OP *kid; | |
93a17b20 LW |
1407 | I32 type; |
1408 | ||
11343788 MB |
1409 | if (!o || error_count) |
1410 | return o; | |
93a17b20 | 1411 | |
11343788 | 1412 | type = o->op_type; |
93a17b20 | 1413 | if (type == OP_LIST) { |
11343788 | 1414 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
93a17b20 | 1415 | my(kid); |
dab48698 | 1416 | } else if (type == OP_UNDEF) { |
7766148a | 1417 | return o; |
dab48698 | 1418 | } else if (type != OP_PADSV && |
93a17b20 LW |
1419 | type != OP_PADAV && |
1420 | type != OP_PADHV && | |
1421 | type != OP_PUSHMARK) | |
1422 | { | |
5dc0d613 | 1423 | yyerror(form("Can't declare %s in my", op_desc[o->op_type])); |
11343788 | 1424 | return o; |
93a17b20 | 1425 | } |
11343788 MB |
1426 | o->op_flags |= OPf_MOD; |
1427 | o->op_private |= OPpLVAL_INTRO; | |
1428 | return o; | |
93a17b20 LW |
1429 | } |
1430 | ||
1431 | OP * | |
8ac85365 | 1432 | sawparens(OP *o) |
79072805 LW |
1433 | { |
1434 | if (o) | |
1435 | o->op_flags |= OPf_PARENS; | |
1436 | return o; | |
1437 | } | |
1438 | ||
1439 | OP * | |
8ac85365 | 1440 | bind_match(I32 type, OP *left, OP *right) |
79072805 | 1441 | { |
11343788 | 1442 | OP *o; |
79072805 | 1443 | |
2ae324a7 | 1444 | if (dowarn && |
1445 | (left->op_type == OP_RV2AV || | |
1446 | left->op_type == OP_RV2HV || | |
1447 | left->op_type == OP_PADAV || | |
1448 | left->op_type == OP_PADHV)) { | |
1449 | char *desc = op_desc[(right->op_type == OP_SUBST || | |
1450 | right->op_type == OP_TRANS) | |
1451 | ? right->op_type : OP_MATCH]; | |
1452 | char *sample = ((left->op_type == OP_RV2AV || | |
1453 | left->op_type == OP_PADAV) | |
1454 | ? "@array" : "%hash"); | |
1455 | warn("Applying %s to %s will act on scalar(%s)", desc, sample, sample); | |
1456 | } | |
1457 | ||
79072805 LW |
1458 | if (right->op_type == OP_MATCH || |
1459 | right->op_type == OP_SUBST || | |
1460 | right->op_type == OP_TRANS) { | |
1461 | right->op_flags |= OPf_STACKED; | |
1462 | if (right->op_type != OP_MATCH) | |
463ee0b2 | 1463 | left = mod(left, right->op_type); |
79072805 | 1464 | if (right->op_type == OP_TRANS) |
11343788 | 1465 | o = newBINOP(OP_NULL, OPf_STACKED, scalar(left), right); |
79072805 | 1466 | else |
11343788 | 1467 | o = prepend_elem(right->op_type, scalar(left), right); |
79072805 | 1468 | if (type == OP_NOT) |
11343788 MB |
1469 | return newUNOP(OP_NOT, 0, scalar(o)); |
1470 | return o; | |
79072805 LW |
1471 | } |
1472 | else | |
1473 | return bind_match(type, left, | |
1474 | pmruntime(newPMOP(OP_MATCH, 0), right, Nullop)); | |
1475 | } | |
1476 | ||
1477 | OP * | |
8ac85365 | 1478 | invert(OP *o) |
79072805 | 1479 | { |
11343788 MB |
1480 | if (!o) |
1481 | return o; | |
79072805 | 1482 | /* XXX need to optimize away NOT NOT here? Or do we let optimizer do it? */ |
11343788 | 1483 | return newUNOP(OP_NOT, OPf_SPECIAL, scalar(o)); |
79072805 LW |
1484 | } |
1485 | ||
1486 | OP * | |
8ac85365 | 1487 | scope(OP *o) |
79072805 LW |
1488 | { |
1489 | if (o) { | |
84902520 | 1490 | if (o->op_flags & OPf_PARENS || PERLDB_NOOPT || tainting) { |
463ee0b2 LW |
1491 | o = prepend_elem(OP_LINESEQ, newOP(OP_ENTER, 0), o); |
1492 | o->op_type = OP_LEAVE; | |
1493 | o->op_ppaddr = ppaddr[OP_LEAVE]; | |
1494 | } | |
1495 | else { | |
1496 | if (o->op_type == OP_LINESEQ) { | |
1497 | OP *kid; | |
1498 | o->op_type = OP_SCOPE; | |
1499 | o->op_ppaddr = ppaddr[OP_SCOPE]; | |
1500 | kid = ((LISTOP*)o)->op_first; | |
748a9306 LW |
1501 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE){ |
1502 | SvREFCNT_dec(((COP*)kid)->cop_filegv); | |
8990e307 | 1503 | null(kid); |
748a9306 | 1504 | } |
463ee0b2 LW |
1505 | } |
1506 | else | |
748a9306 | 1507 | o = newLISTOP(OP_SCOPE, 0, o, Nullop); |
463ee0b2 | 1508 | } |
79072805 LW |
1509 | } |
1510 | return o; | |
1511 | } | |
1512 | ||
a0d0e21e | 1513 | int |
8ac85365 | 1514 | block_start(int full) |
79072805 | 1515 | { |
11343788 | 1516 | dTHR; |
a0d0e21e | 1517 | int retval = savestack_ix; |
55497cff | 1518 | SAVEI32(comppad_name_floor); |
1519 | if (full) { | |
93965878 | 1520 | if ((comppad_name_fill = AvFILLp(comppad_name)) > 0) |
55497cff | 1521 | comppad_name_floor = comppad_name_fill; |
1522 | else | |
1523 | comppad_name_floor = 0; | |
1524 | } | |
1525 | SAVEI32(min_intro_pending); | |
1526 | SAVEI32(max_intro_pending); | |
a0d0e21e | 1527 | min_intro_pending = 0; |
55497cff | 1528 | SAVEI32(comppad_name_fill); |
1529 | SAVEI32(padix_floor); | |
a0d0e21e LW |
1530 | padix_floor = padix; |
1531 | pad_reset_pending = FALSE; | |
55497cff | 1532 | SAVEI32(hints); |
a0d0e21e LW |
1533 | hints &= ~HINT_BLOCK_SCOPE; |
1534 | return retval; | |
1535 | } | |
1536 | ||
1537 | OP* | |
8ac85365 | 1538 | block_end(I32 floor, OP *seq) |
a0d0e21e | 1539 | { |
11343788 | 1540 | dTHR; |
a0d0e21e LW |
1541 | int needblockscope = hints & HINT_BLOCK_SCOPE; |
1542 | OP* retval = scalarseq(seq); | |
a0d0e21e LW |
1543 | LEAVE_SCOPE(floor); |
1544 | pad_reset_pending = FALSE; | |
1545 | if (needblockscope) | |
1546 | hints |= HINT_BLOCK_SCOPE; /* propagate out */ | |
1547 | pad_leavemy(comppad_name_fill); | |
bbce6d69 | 1548 | cop_seqmax++; |
a0d0e21e LW |
1549 | return retval; |
1550 | } | |
1551 | ||
76e3520e | 1552 | STATIC OP * |
54b9620d MB |
1553 | newDEFSVOP(void) |
1554 | { | |
1555 | #ifdef USE_THREADS | |
1556 | OP *o = newOP(OP_THREADSV, 0); | |
1557 | o->op_targ = find_threadsv("_"); | |
1558 | return o; | |
1559 | #else | |
1560 | return newSVREF(newGVOP(OP_GV, 0, defgv)); | |
1561 | #endif /* USE_THREADS */ | |
1562 | } | |
1563 | ||
a0d0e21e | 1564 | void |
8ac85365 | 1565 | newPROG(OP *o) |
a0d0e21e | 1566 | { |
11343788 | 1567 | dTHR; |
a0d0e21e | 1568 | if (in_eval) { |
5dc0d613 | 1569 | eval_root = newUNOP(OP_LEAVEEVAL, ((in_eval & 4) ? OPf_SPECIAL : 0), o); |
a0d0e21e LW |
1570 | eval_start = linklist(eval_root); |
1571 | eval_root->op_next = 0; | |
1572 | peep(eval_start); | |
1573 | } | |
1574 | else { | |
5dc0d613 | 1575 | if (!o) |
a0d0e21e | 1576 | return; |
11343788 | 1577 | main_root = scope(sawparens(scalarvoid(o))); |
a0d0e21e LW |
1578 | curcop = &compiling; |
1579 | main_start = LINKLIST(main_root); | |
1580 | main_root->op_next = 0; | |
1581 | peep(main_start); | |
748a9306 | 1582 | compcv = 0; |
3841441e | 1583 | |
4fdae800 | 1584 | /* Register with debugger */ |
84902520 | 1585 | if (PERLDB_INTER) { |
3841441e | 1586 | CV *cv = perl_get_cv("DB::postponed", FALSE); |
3841441e CS |
1587 | if (cv) { |
1588 | dSP; | |
924508f0 | 1589 | PUSHMARK(SP); |
3841441e CS |
1590 | XPUSHs((SV*)compiling.cop_filegv); |
1591 | PUTBACK; | |
1592 | perl_call_sv((SV*)cv, G_DISCARD); | |
1593 | } | |
1594 | } | |
79072805 | 1595 | } |
79072805 LW |
1596 | } |
1597 | ||
1598 | OP * | |
8ac85365 | 1599 | localize(OP *o, I32 lex) |
79072805 LW |
1600 | { |
1601 | if (o->op_flags & OPf_PARENS) | |
1602 | list(o); | |
8990e307 | 1603 | else { |
8990e307 LW |
1604 | if (dowarn && bufptr > oldbufptr && bufptr[-1] == ',') { |
1605 | char *s; | |
1606 | for (s = bufptr; *s && (isALNUM(*s) || strchr("@$%, ",*s)); s++) ; | |
a0d0e21e | 1607 | if (*s == ';' || *s == '=') |
8990e307 LW |
1608 | warn("Parens missing around \"%s\" list", lex ? "my" : "local"); |
1609 | } | |
1610 | } | |
93a17b20 | 1611 | in_my = FALSE; |
c750a3ec | 1612 | in_my_stash = Nullhv; |
93a17b20 LW |
1613 | if (lex) |
1614 | return my(o); | |
1615 | else | |
463ee0b2 | 1616 | return mod(o, OP_NULL); /* a bit kludgey */ |
79072805 LW |
1617 | } |
1618 | ||
1619 | OP * | |
8ac85365 | 1620 | jmaybe(OP *o) |
79072805 LW |
1621 | { |
1622 | if (o->op_type == OP_LIST) { | |
554b3eca MB |
1623 | OP *o2; |
1624 | #ifdef USE_THREADS | |
2faa37cc | 1625 | o2 = newOP(OP_THREADSV, 0); |
54b9620d | 1626 | o2->op_targ = find_threadsv(";"); |
554b3eca MB |
1627 | #else |
1628 | o2 = newSVREF(newGVOP(OP_GV, 0, gv_fetchpv(";", TRUE, SVt_PV))), | |
1629 | #endif /* USE_THREADS */ | |
1630 | o = convert(OP_JOIN, 0, prepend_elem(OP_LIST, o2, o)); | |
79072805 LW |
1631 | } |
1632 | return o; | |
1633 | } | |
1634 | ||
1635 | OP * | |
8ac85365 | 1636 | fold_constants(register OP *o) |
79072805 | 1637 | { |
11343788 | 1638 | dTHR; |
79072805 LW |
1639 | register OP *curop; |
1640 | I32 type = o->op_type; | |
748a9306 | 1641 | SV *sv; |
79072805 LW |
1642 | |
1643 | if (opargs[type] & OA_RETSCALAR) | |
1644 | scalar(o); | |
1645 | if (opargs[type] & OA_TARGET) | |
ed6116ce | 1646 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 | 1647 | |
85e6fe83 | 1648 | if ((opargs[type] & OA_OTHERINT) && (hints & HINT_INTEGER)) |
a0d0e21e | 1649 | o->op_ppaddr = ppaddr[type = ++(o->op_type)]; |
85e6fe83 | 1650 | |
79072805 LW |
1651 | if (!(opargs[type] & OA_FOLDCONST)) |
1652 | goto nope; | |
1653 | ||
de939608 CS |
1654 | switch (type) { |
1655 | case OP_SPRINTF: | |
1656 | case OP_UCFIRST: | |
1657 | case OP_LCFIRST: | |
1658 | case OP_UC: | |
1659 | case OP_LC: | |
69dcf70c MB |
1660 | case OP_SLT: |
1661 | case OP_SGT: | |
1662 | case OP_SLE: | |
1663 | case OP_SGE: | |
1664 | case OP_SCMP: | |
1665 | ||
de939608 CS |
1666 | if (o->op_private & OPpLOCALE) |
1667 | goto nope; | |
1668 | } | |
1669 | ||
a0d0e21e LW |
1670 | if (error_count) |
1671 | goto nope; /* Don't try to run w/ errors */ | |
1672 | ||
79072805 | 1673 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
93a17b20 LW |
1674 | if (curop->op_type != OP_CONST && |
1675 | curop->op_type != OP_LIST && | |
1676 | curop->op_type != OP_SCALAR && | |
a0d0e21e | 1677 | curop->op_type != OP_NULL && |
93a17b20 | 1678 | curop->op_type != OP_PUSHMARK) { |
79072805 LW |
1679 | goto nope; |
1680 | } | |
1681 | } | |
1682 | ||
1683 | curop = LINKLIST(o); | |
1684 | o->op_next = 0; | |
1685 | op = curop; | |
76e3520e | 1686 | CALLRUNOPS(); |
748a9306 LW |
1687 | sv = *(stack_sp--); |
1688 | if (o->op_targ && sv == PAD_SV(o->op_targ)) /* grab pad temp? */ | |
79072805 | 1689 | pad_swipe(o->op_targ); |
748a9306 LW |
1690 | else if (SvTEMP(sv)) { /* grab mortal temp? */ |
1691 | (void)SvREFCNT_inc(sv); | |
1692 | SvTEMP_off(sv); | |
85e6fe83 | 1693 | } |
79072805 LW |
1694 | op_free(o); |
1695 | if (type == OP_RV2GV) | |
b1cb66bf | 1696 | return newGVOP(OP_GV, 0, (GV*)sv); |
748a9306 | 1697 | else { |
ee580363 GS |
1698 | /* try to smush double to int, but don't smush -2.0 to -2 */ |
1699 | if ((SvFLAGS(sv) & (SVf_IOK|SVf_NOK|SVf_POK)) == SVf_NOK && | |
1700 | type != OP_NEGATE) | |
1701 | { | |
748a9306 | 1702 | IV iv = SvIV(sv); |
ee580363 | 1703 | if ((double)iv == SvNV(sv)) { |
748a9306 LW |
1704 | SvREFCNT_dec(sv); |
1705 | sv = newSViv(iv); | |
1706 | } | |
b1cb66bf | 1707 | else |
1708 | SvIOK_off(sv); /* undo SvIV() damage */ | |
748a9306 LW |
1709 | } |
1710 | return newSVOP(OP_CONST, 0, sv); | |
1711 | } | |
aeea060c | 1712 | |
79072805 LW |
1713 | nope: |
1714 | if (!(opargs[type] & OA_OTHERINT)) | |
1715 | return o; | |
79072805 | 1716 | |
85e6fe83 | 1717 | if (!(hints & HINT_INTEGER)) { |
a0d0e21e | 1718 | if (type == OP_DIVIDE || !(o->op_flags & OPf_KIDS)) |
85e6fe83 LW |
1719 | return o; |
1720 | ||
1721 | for (curop = ((UNOP*)o)->op_first; curop; curop = curop->op_sibling) { | |
1722 | if (curop->op_type == OP_CONST) { | |
b1cb66bf | 1723 | if (SvIOK(((SVOP*)curop)->op_sv)) |
85e6fe83 LW |
1724 | continue; |
1725 | return o; | |
1726 | } | |
1727 | if (opargs[curop->op_type] & OA_RETINTEGER) | |
79072805 LW |
1728 | continue; |
1729 | return o; | |
1730 | } | |
a0d0e21e | 1731 | o->op_ppaddr = ppaddr[++(o->op_type)]; |
79072805 LW |
1732 | } |
1733 | ||
79072805 LW |
1734 | return o; |
1735 | } | |
1736 | ||
1737 | OP * | |
8ac85365 | 1738 | gen_constant_list(register OP *o) |
79072805 | 1739 | { |
11343788 | 1740 | dTHR; |
79072805 | 1741 | register OP *curop; |
79072805 | 1742 | I32 oldtmps_floor = tmps_floor; |
79072805 | 1743 | |
a0d0e21e LW |
1744 | list(o); |
1745 | if (error_count) | |
1746 | return o; /* Don't attempt to run with errors */ | |
1747 | ||
1748 | op = curop = LINKLIST(o); | |
1749 | o->op_next = 0; | |
11343788 | 1750 | pp_pushmark(ARGS); |
76e3520e | 1751 | CALLRUNOPS(); |
a0d0e21e | 1752 | op = curop; |
11343788 | 1753 | pp_anonlist(ARGS); |
79072805 | 1754 | tmps_floor = oldtmps_floor; |
79072805 LW |
1755 | |
1756 | o->op_type = OP_RV2AV; | |
1757 | o->op_ppaddr = ppaddr[OP_RV2AV]; | |
79072805 | 1758 | curop = ((UNOP*)o)->op_first; |
a0d0e21e | 1759 | ((UNOP*)o)->op_first = newSVOP(OP_CONST, 0, SvREFCNT_inc(*stack_sp--)); |
79072805 | 1760 | op_free(curop); |
79072805 LW |
1761 | linklist(o); |
1762 | return list(o); | |
1763 | } | |
1764 | ||
1765 | OP * | |
8ac85365 | 1766 | convert(I32 type, I32 flags, OP *o) |
79072805 LW |
1767 | { |
1768 | OP *kid; | |
a0d0e21e | 1769 | OP *last = 0; |
79072805 | 1770 | |
11343788 MB |
1771 | if (!o || o->op_type != OP_LIST) |
1772 | o = newLISTOP(OP_LIST, 0, o, Nullop); | |
748a9306 | 1773 | else |
5dc0d613 | 1774 | o->op_flags &= ~OPf_WANT; |
79072805 | 1775 | |
8990e307 | 1776 | if (!(opargs[type] & OA_MARK)) |
11343788 | 1777 | null(cLISTOPo->op_first); |
8990e307 | 1778 | |
11343788 MB |
1779 | o->op_type = type; |
1780 | o->op_ppaddr = ppaddr[type]; | |
1781 | o->op_flags |= flags; | |
79072805 | 1782 | |
11343788 MB |
1783 | o = CHECKOP(type, o); |
1784 | if (o->op_type != type) | |
1785 | return o; | |
79072805 | 1786 | |
11343788 | 1787 | if (cLISTOPo->op_children < 7) { |
79072805 | 1788 | /* XXX do we really need to do this if we're done appending?? */ |
11343788 | 1789 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 | 1790 | last = kid; |
11343788 | 1791 | cLISTOPo->op_last = last; /* in case check substituted last arg */ |
79072805 LW |
1792 | } |
1793 | ||
11343788 | 1794 | return fold_constants(o); |
79072805 LW |
1795 | } |
1796 | ||
1797 | /* List constructors */ | |
1798 | ||
1799 | OP * | |
8ac85365 | 1800 | append_elem(I32 type, OP *first, OP *last) |
79072805 LW |
1801 | { |
1802 | if (!first) | |
1803 | return last; | |
8990e307 LW |
1804 | |
1805 | if (!last) | |
79072805 | 1806 | return first; |
8990e307 | 1807 | |
a0d0e21e LW |
1808 | if (first->op_type != type || type==OP_LIST && first->op_flags & OPf_PARENS) |
1809 | return newLISTOP(type, 0, first, last); | |
79072805 | 1810 | |
a0d0e21e LW |
1811 | if (first->op_flags & OPf_KIDS) |
1812 | ((LISTOP*)first)->op_last->op_sibling = last; | |
1813 | else { | |
1814 | first->op_flags |= OPf_KIDS; | |
1815 | ((LISTOP*)first)->op_first = last; | |
1816 | } | |
1817 | ((LISTOP*)first)->op_last = last; | |
1818 | ((LISTOP*)first)->op_children++; | |
1819 | return first; | |
79072805 LW |
1820 | } |
1821 | ||
1822 | OP * | |
8ac85365 | 1823 | append_list(I32 type, LISTOP *first, LISTOP *last) |
79072805 LW |
1824 | { |
1825 | if (!first) | |
1826 | return (OP*)last; | |
8990e307 LW |
1827 | |
1828 | if (!last) | |
79072805 | 1829 | return (OP*)first; |
8990e307 LW |
1830 | |
1831 | if (first->op_type != type) | |
79072805 | 1832 | return prepend_elem(type, (OP*)first, (OP*)last); |
8990e307 LW |
1833 | |
1834 | if (last->op_type != type) | |
79072805 LW |
1835 | return append_elem(type, (OP*)first, (OP*)last); |
1836 | ||
1837 | first->op_last->op_sibling = last->op_first; | |
1838 | first->op_last = last->op_last; | |
1839 | first->op_children += last->op_children; | |
1840 | if (first->op_children) | |
1841 | last->op_flags |= OPf_KIDS; | |
1842 | ||
1843 | Safefree(last); | |
1844 | return (OP*)first; | |
1845 | } | |
1846 | ||
1847 | OP * | |
8ac85365 | 1848 | prepend_elem(I32 type, OP *first, OP *last) |
79072805 LW |
1849 | { |
1850 | if (!first) | |
1851 | return last; | |
8990e307 LW |
1852 | |
1853 | if (!last) | |
79072805 | 1854 | return first; |
8990e307 LW |
1855 | |
1856 | if (last->op_type == type) { | |
1857 | if (type == OP_LIST) { /* already a PUSHMARK there */ | |
1858 | first->op_sibling = ((LISTOP*)last)->op_first->op_sibling; | |
1859 | ((LISTOP*)last)->op_first->op_sibling = first; | |
1860 | } | |
1861 | else { | |
1862 | if (!(last->op_flags & OPf_KIDS)) { | |
1863 | ((LISTOP*)last)->op_last = first; | |
1864 | last->op_flags |= OPf_KIDS; | |
1865 | } | |
1866 | first->op_sibling = ((LISTOP*)last)->op_first; | |
1867 | ((LISTOP*)last)->op_first = first; | |
79072805 | 1868 | } |
79072805 LW |
1869 | ((LISTOP*)last)->op_children++; |
1870 | return last; | |
1871 | } | |
1872 | ||
1873 | return newLISTOP(type, 0, first, last); | |
1874 | } | |
1875 | ||
1876 | /* Constructors */ | |
1877 | ||
1878 | OP * | |
8ac85365 | 1879 | newNULLLIST(void) |
79072805 | 1880 | { |
8990e307 LW |
1881 | return newOP(OP_STUB, 0); |
1882 | } | |
1883 | ||
1884 | OP * | |
8ac85365 | 1885 | force_list(OP *o) |
8990e307 | 1886 | { |
11343788 MB |
1887 | if (!o || o->op_type != OP_LIST) |
1888 | o = newLISTOP(OP_LIST, 0, o, Nullop); | |
1889 | null(o); | |
1890 | return o; | |
79072805 LW |
1891 | } |
1892 | ||
1893 | OP * | |
8ac85365 | 1894 | newLISTOP(I32 type, I32 flags, OP *first, OP *last) |
79072805 LW |
1895 | { |
1896 | LISTOP *listop; | |
1897 | ||
1898 | Newz(1101, listop, 1, LISTOP); | |
1899 | ||
1900 | listop->op_type = type; | |
1901 | listop->op_ppaddr = ppaddr[type]; | |
1902 | listop->op_children = (first != 0) + (last != 0); | |
1903 | listop->op_flags = flags; | |
79072805 LW |
1904 | |
1905 | if (!last && first) | |
1906 | last = first; | |
1907 | else if (!first && last) | |
1908 | first = last; | |
8990e307 LW |
1909 | else if (first) |
1910 | first->op_sibling = last; | |
79072805 LW |
1911 | listop->op_first = first; |
1912 | listop->op_last = last; | |
8990e307 LW |
1913 | if (type == OP_LIST) { |
1914 | OP* pushop; | |
1915 | pushop = newOP(OP_PUSHMARK, 0); | |
1916 | pushop->op_sibling = first; | |
1917 | listop->op_first = pushop; | |
1918 | listop->op_flags |= OPf_KIDS; | |
1919 | if (!last) | |
1920 | listop->op_last = pushop; | |
1921 | } | |
1922 | else if (listop->op_children) | |
1923 | listop->op_flags |= OPf_KIDS; | |
79072805 LW |
1924 | |
1925 | return (OP*)listop; | |
1926 | } | |
1927 | ||
1928 | OP * | |
8ac85365 | 1929 | newOP(I32 type, I32 flags) |
79072805 | 1930 | { |
11343788 MB |
1931 | OP *o; |
1932 | Newz(1101, o, 1, OP); | |
1933 | o->op_type = type; | |
1934 | o->op_ppaddr = ppaddr[type]; | |
1935 | o->op_flags = flags; | |
79072805 | 1936 | |
11343788 MB |
1937 | o->op_next = o; |
1938 | o->op_private = 0 + (flags >> 8); | |
79072805 | 1939 | if (opargs[type] & OA_RETSCALAR) |
11343788 | 1940 | scalar(o); |
79072805 | 1941 | if (opargs[type] & OA_TARGET) |
11343788 MB |
1942 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
1943 | return CHECKOP(type, o); | |
79072805 LW |
1944 | } |
1945 | ||
1946 | OP * | |
8ac85365 | 1947 | newUNOP(I32 type, I32 flags, OP *first) |
79072805 LW |
1948 | { |
1949 | UNOP *unop; | |
1950 | ||
93a17b20 | 1951 | if (!first) |
aeea060c | 1952 | first = newOP(OP_STUB, 0); |
8990e307 LW |
1953 | if (opargs[type] & OA_MARK) |
1954 | first = force_list(first); | |
93a17b20 | 1955 | |
79072805 LW |
1956 | Newz(1101, unop, 1, UNOP); |
1957 | unop->op_type = type; | |
1958 | unop->op_ppaddr = ppaddr[type]; | |
1959 | unop->op_first = first; | |
1960 | unop->op_flags = flags | OPf_KIDS; | |
c07a80fd | 1961 | unop->op_private = 1 | (flags >> 8); |
c277df42 IZ |
1962 | #if 1 |
1963 | if(type == OP_STUDY && first->op_type == OP_MATCH) { | |
1964 | first->op_type = OP_PUSHRE; | |
1965 | first->op_ppaddr = ppaddr[OP_PUSHRE]; | |
1966 | } | |
1967 | #endif | |
e50aee73 | 1968 | unop = (UNOP*) CHECKOP(type, unop); |
79072805 LW |
1969 | if (unop->op_next) |
1970 | return (OP*)unop; | |
1971 | ||
a0d0e21e | 1972 | return fold_constants((OP *) unop); |
79072805 LW |
1973 | } |
1974 | ||
1975 | OP * | |
8ac85365 | 1976 | newBINOP(I32 type, I32 flags, OP *first, OP *last) |
79072805 LW |
1977 | { |
1978 | BINOP *binop; | |
1979 | Newz(1101, binop, 1, BINOP); | |
1980 | ||
1981 | if (!first) | |
1982 | first = newOP(OP_NULL, 0); | |
1983 | ||
1984 | binop->op_type = type; | |
1985 | binop->op_ppaddr = ppaddr[type]; | |
1986 | binop->op_first = first; | |
1987 | binop->op_flags = flags | OPf_KIDS; | |
1988 | if (!last) { | |
1989 | last = first; | |
c07a80fd | 1990 | binop->op_private = 1 | (flags >> 8); |
79072805 LW |
1991 | } |
1992 | else { | |
c07a80fd | 1993 | binop->op_private = 2 | (flags >> 8); |
79072805 LW |
1994 | first->op_sibling = last; |
1995 | } | |
1996 | ||
e50aee73 | 1997 | binop = (BINOP*)CHECKOP(type, binop); |
79072805 LW |
1998 | if (binop->op_next) |
1999 | return (OP*)binop; | |
2000 | ||
2001 | binop->op_last = last = binop->op_first->op_sibling; | |
2002 | ||
a0d0e21e | 2003 | return fold_constants((OP *)binop); |
79072805 LW |
2004 | } |
2005 | ||
2006 | OP * | |
8ac85365 | 2007 | pmtrans(OP *o, OP *expr, OP *repl) |
79072805 | 2008 | { |
79072805 LW |
2009 | SV *tstr = ((SVOP*)expr)->op_sv; |
2010 | SV *rstr = ((SVOP*)repl)->op_sv; | |
463ee0b2 LW |
2011 | STRLEN tlen; |
2012 | STRLEN rlen; | |
ec49126f | 2013 | register U8 *t = (U8*)SvPV(tstr, tlen); |
2014 | register U8 *r = (U8*)SvPV(rstr, rlen); | |
79072805 LW |
2015 | register I32 i; |
2016 | register I32 j; | |
8ac85365 | 2017 | I32 Delete; |
79072805 | 2018 | I32 complement; |
5d06d08e | 2019 | I32 squash; |
79072805 LW |
2020 | register short *tbl; |
2021 | ||
11343788 MB |
2022 | tbl = (short*)cPVOPo->op_pv; |
2023 | complement = o->op_private & OPpTRANS_COMPLEMENT; | |
8ac85365 | 2024 | Delete = o->op_private & OPpTRANS_DELETE; |
5d06d08e | 2025 | squash = o->op_private & OPpTRANS_SQUASH; |
79072805 LW |
2026 | |
2027 | if (complement) { | |
2028 | Zero(tbl, 256, short); | |
2029 | for (i = 0; i < tlen; i++) | |
ec49126f | 2030 | tbl[t[i]] = -1; |
79072805 LW |
2031 | for (i = 0, j = 0; i < 256; i++) { |
2032 | if (!tbl[i]) { | |
2033 | if (j >= rlen) { | |
8ac85365 | 2034 | if (Delete) |
79072805 LW |
2035 | tbl[i] = -2; |
2036 | else if (rlen) | |
ec49126f | 2037 | tbl[i] = r[j-1]; |
79072805 LW |
2038 | else |
2039 | tbl[i] = i; | |
2040 | } | |
2041 | else | |
ec49126f | 2042 | tbl[i] = r[j++]; |
79072805 LW |
2043 | } |
2044 | } | |
2045 | } | |
2046 | else { | |
8ac85365 | 2047 | if (!rlen && !Delete) { |
79072805 | 2048 | r = t; rlen = tlen; |
5d06d08e MB |
2049 | if (!squash) |
2050 | o->op_private |= OPpTRANS_COUNTONLY; | |
79072805 LW |
2051 | } |
2052 | for (i = 0; i < 256; i++) | |
2053 | tbl[i] = -1; | |
2054 | for (i = 0, j = 0; i < tlen; i++,j++) { | |
2055 | if (j >= rlen) { | |
8ac85365 | 2056 | if (Delete) { |
ec49126f | 2057 | if (tbl[t[i]] == -1) |
2058 | tbl[t[i]] = -2; | |
79072805 LW |
2059 | continue; |
2060 | } | |
2061 | --j; | |
2062 | } | |
ec49126f | 2063 | if (tbl[t[i]] == -1) |
2064 | tbl[t[i]] = r[j]; | |
79072805 LW |
2065 | } |
2066 | } | |
2067 | op_free(expr); | |
2068 | op_free(repl); | |
2069 | ||
11343788 | 2070 | return o; |
79072805 LW |
2071 | } |
2072 | ||
2073 | OP * | |
8ac85365 | 2074 | newPMOP(I32 type, I32 flags) |
79072805 | 2075 | { |
11343788 | 2076 | dTHR; |
79072805 LW |
2077 | PMOP *pmop; |
2078 | ||
2079 | Newz(1101, pmop, 1, PMOP); | |
2080 | pmop->op_type = type; | |
2081 | pmop->op_ppaddr = ppaddr[type]; | |
2082 | pmop->op_flags = flags; | |
c07a80fd | 2083 | pmop->op_private = 0 | (flags >> 8); |
79072805 | 2084 | |
36477c24 | 2085 | if (hints & HINT_LOCALE) |
2086 | pmop->op_pmpermflags = (pmop->op_pmflags |= PMf_LOCALE); | |
2087 | ||
79072805 | 2088 | /* link into pm list */ |
a0d0e21e | 2089 | if (type != OP_TRANS && curstash) { |
79072805 LW |
2090 | pmop->op_pmnext = HvPMROOT(curstash); |
2091 | HvPMROOT(curstash) = pmop; | |
2092 | } | |
2093 | ||
2094 | return (OP*)pmop; | |
2095 | } | |
2096 | ||
2097 | OP * | |
8ac85365 | 2098 | pmruntime(OP *o, OP *expr, OP *repl) |
79072805 LW |
2099 | { |
2100 | PMOP *pm; | |
2101 | LOGOP *rcop; | |
ce862d02 | 2102 | I32 repl_has_vars = 0; |
79072805 | 2103 | |
11343788 MB |
2104 | if (o->op_type == OP_TRANS) |
2105 | return pmtrans(o, expr, repl); | |
79072805 | 2106 | |
3e3baf6d | 2107 | hints |= HINT_BLOCK_SCOPE; |
11343788 | 2108 | pm = (PMOP*)o; |
79072805 LW |
2109 | |
2110 | if (expr->op_type == OP_CONST) { | |
463ee0b2 | 2111 | STRLEN plen; |
79072805 | 2112 | SV *pat = ((SVOP*)expr)->op_sv; |
463ee0b2 | 2113 | char *p = SvPV(pat, plen); |
11343788 | 2114 | if ((o->op_flags & OPf_SPECIAL) && strEQ(p, " ")) { |
93a17b20 | 2115 | sv_setpvn(pat, "\\s+", 3); |
463ee0b2 | 2116 | p = SvPV(pat, plen); |
79072805 LW |
2117 | pm->op_pmflags |= PMf_SKIPWHITE; |
2118 | } | |
e50aee73 | 2119 | pm->op_pmregexp = pregcomp(p, p + plen, pm); |
aeea060c | 2120 | if (strEQ("\\s+", pm->op_pmregexp->precomp)) |
85e6fe83 | 2121 | pm->op_pmflags |= PMf_WHITE; |
79072805 LW |
2122 | op_free(expr); |
2123 | } | |
2124 | else { | |
463ee0b2 LW |
2125 | if (pm->op_pmflags & PMf_KEEP) |
2126 | expr = newUNOP(OP_REGCMAYBE,0,expr); | |
2127 | ||
79072805 LW |
2128 | Newz(1101, rcop, 1, LOGOP); |
2129 | rcop->op_type = OP_REGCOMP; | |
2130 | rcop->op_ppaddr = ppaddr[OP_REGCOMP]; | |
2131 | rcop->op_first = scalar(expr); | |
2132 | rcop->op_flags |= OPf_KIDS; | |
2133 | rcop->op_private = 1; | |
11343788 | 2134 | rcop->op_other = o; |
79072805 LW |
2135 | |
2136 | /* establish postfix order */ | |
463ee0b2 LW |
2137 | if (pm->op_pmflags & PMf_KEEP) { |
2138 | LINKLIST(expr); | |
2139 | rcop->op_next = expr; | |
2140 | ((UNOP*)expr)->op_first->op_next = (OP*)rcop; | |
2141 | } | |
2142 | else { | |
2143 | rcop->op_next = LINKLIST(expr); | |
2144 | expr->op_next = (OP*)rcop; | |
2145 | } | |
79072805 | 2146 | |
11343788 | 2147 | prepend_elem(o->op_type, scalar((OP*)rcop), o); |
79072805 LW |
2148 | } |
2149 | ||
2150 | if (repl) { | |
748a9306 LW |
2151 | OP *curop; |
2152 | if (pm->op_pmflags & PMf_EVAL) | |
2153 | curop = 0; | |
554b3eca | 2154 | #ifdef USE_THREADS |
2faa37cc | 2155 | else if (repl->op_type == OP_THREADSV |
554b3eca | 2156 | && strchr("&`'123456789+", |
54b9620d | 2157 | threadsv_names[repl->op_targ])) |
554b3eca MB |
2158 | { |
2159 | curop = 0; | |
2160 | } | |
2161 | #endif /* USE_THREADS */ | |
748a9306 LW |
2162 | else if (repl->op_type == OP_CONST) |
2163 | curop = repl; | |
79072805 | 2164 | else { |
79072805 LW |
2165 | OP *lastop = 0; |
2166 | for (curop = LINKLIST(repl); curop!=repl; curop = LINKLIST(curop)) { | |
2167 | if (opargs[curop->op_type] & OA_DANGEROUS) { | |
554b3eca | 2168 | #ifdef USE_THREADS |
ce862d02 IZ |
2169 | if (curop->op_type == OP_THREADSV) { |
2170 | repl_has_vars = 1; | |
be949f6f | 2171 | if (strchr("&`'123456789+", curop->op_private)) |
ce862d02 | 2172 | break; |
554b3eca MB |
2173 | } |
2174 | #else | |
79072805 LW |
2175 | if (curop->op_type == OP_GV) { |
2176 | GV *gv = ((GVOP*)curop)->op_gv; | |
ce862d02 | 2177 | repl_has_vars = 1; |
93a17b20 | 2178 | if (strchr("&`'123456789+", *GvENAME(gv))) |
79072805 LW |
2179 | break; |
2180 | } | |
554b3eca | 2181 | #endif /* USE_THREADS */ |
79072805 LW |
2182 | else if (curop->op_type == OP_RV2CV) |
2183 | break; | |
2184 | else if (curop->op_type == OP_RV2SV || | |
2185 | curop->op_type == OP_RV2AV || | |
2186 | curop->op_type == OP_RV2HV || | |
2187 | curop->op_type == OP_RV2GV) { | |
2188 | if (lastop && lastop->op_type != OP_GV) /*funny deref?*/ | |
2189 | break; | |
2190 | } | |
748a9306 LW |
2191 | else if (curop->op_type == OP_PADSV || |
2192 | curop->op_type == OP_PADAV || | |
2193 | curop->op_type == OP_PADHV || | |
554b3eca | 2194 | curop->op_type == OP_PADANY) { |
ce862d02 | 2195 | repl_has_vars = 1; |
748a9306 | 2196 | } |
79072805 LW |
2197 | else |
2198 | break; | |
2199 | } | |
2200 | lastop = curop; | |
2201 | } | |
748a9306 | 2202 | } |
ce862d02 IZ |
2203 | if (curop == repl |
2204 | && !(repl_has_vars | |
2205 | && (!pm->op_pmregexp | |
2206 | || pm->op_pmregexp->reganch & ROPT_EVAL_SEEN))) { | |
748a9306 | 2207 | pm->op_pmflags |= PMf_CONST; /* const for long enough */ |
4633a7c4 | 2208 | pm->op_pmpermflags |= PMf_CONST; /* const for long enough */ |
11343788 | 2209 | prepend_elem(o->op_type, scalar(repl), o); |
748a9306 LW |
2210 | } |
2211 | else { | |
ce862d02 IZ |
2212 | if (curop == repl && !pm->op_pmregexp) { /* Has variables. */ |
2213 | pm->op_pmflags |= PMf_MAYBE_CONST; | |
2214 | pm->op_pmpermflags |= PMf_MAYBE_CONST; | |
2215 | } | |
748a9306 LW |
2216 | Newz(1101, rcop, 1, LOGOP); |
2217 | rcop->op_type = OP_SUBSTCONT; | |
2218 | rcop->op_ppaddr = ppaddr[OP_SUBSTCONT]; | |
2219 | rcop->op_first = scalar(repl); | |
2220 | rcop->op_flags |= OPf_KIDS; | |
2221 | rcop->op_private = 1; | |
11343788 | 2222 | rcop->op_other = o; |
748a9306 LW |
2223 | |
2224 | /* establish postfix order */ | |
2225 | rcop->op_next = LINKLIST(repl); | |
2226 | repl->op_next = (OP*)rcop; | |
2227 | ||
2228 | pm->op_pmreplroot = scalar((OP*)rcop); | |
2229 | pm->op_pmreplstart = LINKLIST(rcop); | |
2230 | rcop->op_next = 0; | |
79072805 LW |
2231 | } |
2232 | } | |
2233 | ||
2234 | return (OP*)pm; | |
2235 | } | |
2236 | ||
2237 | OP * | |
8ac85365 | 2238 | newSVOP(I32 type, I32 flags, SV *sv) |
79072805 LW |
2239 | { |
2240 | SVOP *svop; | |
2241 | Newz(1101, svop, 1, SVOP); | |
2242 | svop->op_type = type; | |
2243 | svop->op_ppaddr = ppaddr[type]; | |
2244 | svop->op_sv = sv; | |
2245 | svop->op_next = (OP*)svop; | |
2246 | svop->op_flags = flags; | |
2247 | if (opargs[type] & OA_RETSCALAR) | |
463ee0b2 | 2248 | scalar((OP*)svop); |
79072805 | 2249 | if (opargs[type] & OA_TARGET) |
ed6116ce | 2250 | svop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2251 | return CHECKOP(type, svop); |
79072805 LW |
2252 | } |
2253 | ||
2254 | OP * | |
8ac85365 | 2255 | newGVOP(I32 type, I32 flags, GV *gv) |
79072805 | 2256 | { |
11343788 | 2257 | dTHR; |
79072805 LW |
2258 | GVOP *gvop; |
2259 | Newz(1101, gvop, 1, GVOP); | |
2260 | gvop->op_type = type; | |
2261 | gvop->op_ppaddr = ppaddr[type]; | |
8990e307 | 2262 | gvop->op_gv = (GV*)SvREFCNT_inc(gv); |
79072805 LW |
2263 | gvop->op_next = (OP*)gvop; |
2264 | gvop->op_flags = flags; | |
2265 | if (opargs[type] & OA_RETSCALAR) | |
463ee0b2 | 2266 | scalar((OP*)gvop); |
79072805 | 2267 | if (opargs[type] & OA_TARGET) |
ed6116ce | 2268 | gvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2269 | return CHECKOP(type, gvop); |
79072805 LW |
2270 | } |
2271 | ||
2272 | OP * | |
8ac85365 | 2273 | newPVOP(I32 type, I32 flags, char *pv) |
79072805 LW |
2274 | { |
2275 | PVOP *pvop; | |
2276 | Newz(1101, pvop, 1, PVOP); | |
2277 | pvop->op_type = type; | |
2278 | pvop->op_ppaddr = ppaddr[type]; | |
2279 | pvop->op_pv = pv; | |
2280 | pvop->op_next = (OP*)pvop; | |
2281 | pvop->op_flags = flags; | |
2282 | if (opargs[type] & OA_RETSCALAR) | |
463ee0b2 | 2283 | scalar((OP*)pvop); |
79072805 | 2284 | if (opargs[type] & OA_TARGET) |
ed6116ce | 2285 | pvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2286 | return CHECKOP(type, pvop); |
79072805 LW |
2287 | } |
2288 | ||
79072805 | 2289 | void |
8ac85365 | 2290 | package(OP *o) |
79072805 | 2291 | { |
11343788 | 2292 | dTHR; |
93a17b20 | 2293 | SV *sv; |
79072805 LW |
2294 | |
2295 | save_hptr(&curstash); | |
2296 | save_item(curstname); | |
11343788 | 2297 | if (o) { |
463ee0b2 LW |
2298 | STRLEN len; |
2299 | char *name; | |
11343788 | 2300 | sv = cSVOPo->op_sv; |
463ee0b2 | 2301 | name = SvPV(sv, len); |
b1cb66bf | 2302 | curstash = gv_stashpvn(name,len,TRUE); |
463ee0b2 | 2303 | sv_setpvn(curstname, name, len); |
11343788 | 2304 | op_free(o); |
93a17b20 LW |
2305 | } |
2306 | else { | |
2307 | sv_setpv(curstname,"<none>"); | |
2308 | curstash = Nullhv; | |
2309 | } | |
79072805 | 2310 | copline = NOLINE; |
8990e307 | 2311 | expect = XSTATE; |
79072805 LW |
2312 | } |
2313 | ||
85e6fe83 | 2314 | void |
8ac85365 | 2315 | utilize(int aver, I32 floor, OP *version, OP *id, OP *arg) |
85e6fe83 | 2316 | { |
a0d0e21e LW |
2317 | OP *pack; |
2318 | OP *meth; | |
2319 | OP *rqop; | |
2320 | OP *imop; | |
b1cb66bf | 2321 | OP *veop; |
85e6fe83 | 2322 | |
a0d0e21e LW |
2323 | if (id->op_type != OP_CONST) |
2324 | croak("Module name must be constant"); | |
85e6fe83 | 2325 | |
b1cb66bf | 2326 | veop = Nullop; |
2327 | ||
2328 | if(version != Nullop) { | |
2329 | SV *vesv = ((SVOP*)version)->op_sv; | |
2330 | ||
2331 | if (arg == Nullop && !SvNIOK(vesv)) { | |
2332 | arg = version; | |
2333 | } | |
2334 | else { | |
2335 | OP *pack; | |
2336 | OP *meth; | |
2337 | ||
2338 | if (version->op_type != OP_CONST || !SvNIOK(vesv)) | |
2339 | croak("Version number must be constant number"); | |
2340 | ||
2341 | /* Make copy of id so we don't free it twice */ | |
2342 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); | |
2343 | ||
2344 | /* Fake up a method call to VERSION */ | |
2345 | meth = newSVOP(OP_CONST, 0, newSVpv("VERSION", 7)); | |
2346 | veop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, | |
2347 | append_elem(OP_LIST, | |
2348 | prepend_elem(OP_LIST, pack, list(version)), | |
2349 | newUNOP(OP_METHOD, 0, meth))); | |
2350 | } | |
2351 | } | |
aeea060c | 2352 | |
a0d0e21e | 2353 | /* Fake up an import/unimport */ |
4633a7c4 LW |
2354 | if (arg && arg->op_type == OP_STUB) |
2355 | imop = arg; /* no import on explicit () */ | |
b1cb66bf | 2356 | else if(SvNIOK(((SVOP*)id)->op_sv)) { |
2357 | imop = Nullop; /* use 5.0; */ | |
2358 | } | |
4633a7c4 LW |
2359 | else { |
2360 | /* Make copy of id so we don't free it twice */ | |
2361 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); | |
4633a7c4 LW |
2362 | meth = newSVOP(OP_CONST, 0, |
2363 | aver | |
2364 | ? newSVpv("import", 6) | |
2365 | : newSVpv("unimport", 8) | |
2366 | ); | |
2367 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, | |
a0d0e21e LW |
2368 | append_elem(OP_LIST, |
2369 | prepend_elem(OP_LIST, pack, list(arg)), | |
2370 | newUNOP(OP_METHOD, 0, meth))); | |
4633a7c4 LW |
2371 | } |
2372 | ||
2373 | /* Fake up a require */ | |
2374 | rqop = newUNOP(OP_REQUIRE, 0, id); | |
a0d0e21e LW |
2375 | |
2376 | /* Fake up the BEGIN {}, which does its thing immediately. */ | |
c07a80fd | 2377 | newSUB(floor, |
a0d0e21e | 2378 | newSVOP(OP_CONST, 0, newSVpv("BEGIN", 5)), |
4633a7c4 | 2379 | Nullop, |
a0d0e21e | 2380 | append_elem(OP_LINESEQ, |
b1cb66bf | 2381 | append_elem(OP_LINESEQ, |
2382 | newSTATEOP(0, Nullch, rqop), | |
2383 | newSTATEOP(0, Nullch, veop)), | |
a0d0e21e | 2384 | newSTATEOP(0, Nullch, imop) )); |
85e6fe83 | 2385 | |
85e6fe83 LW |
2386 | copline = NOLINE; |
2387 | expect = XSTATE; | |
2388 | } | |
2389 | ||
79072805 | 2390 | OP * |
8ac85365 | 2391 | newSLICEOP(I32 flags, OP *subscript, OP *listval) |
79072805 LW |
2392 | { |
2393 | return newBINOP(OP_LSLICE, flags, | |
8990e307 LW |
2394 | list(force_list(subscript)), |
2395 | list(force_list(listval)) ); | |
79072805 LW |
2396 | } |
2397 | ||
76e3520e | 2398 | STATIC I32 |
8ac85365 | 2399 | list_assignment(register OP *o) |
79072805 | 2400 | { |
11343788 | 2401 | if (!o) |
79072805 LW |
2402 | return TRUE; |
2403 | ||
11343788 MB |
2404 | if (o->op_type == OP_NULL && o->op_flags & OPf_KIDS) |
2405 | o = cUNOPo->op_first; | |
79072805 | 2406 | |
11343788 MB |
2407 | if (o->op_type == OP_COND_EXPR) { |
2408 | I32 t = list_assignment(cCONDOPo->op_first->op_sibling); | |
2409 | I32 f = list_assignment(cCONDOPo->op_first->op_sibling->op_sibling); | |
79072805 LW |
2410 | |
2411 | if (t && f) | |
2412 | return TRUE; | |
2413 | if (t || f) | |
2414 | yyerror("Assignment to both a list and a scalar"); | |
2415 | return FALSE; | |
2416 | } | |
2417 | ||
11343788 MB |
2418 | if (o->op_type == OP_LIST || o->op_flags & OPf_PARENS || |
2419 | o->op_type == OP_RV2AV || o->op_type == OP_RV2HV || | |
2420 | o->op_type == OP_ASLICE || o->op_type == OP_HSLICE) | |
79072805 LW |
2421 | return TRUE; |
2422 | ||
11343788 | 2423 | if (o->op_type == OP_PADAV || o->op_type == OP_PADHV) |
93a17b20 LW |
2424 | return TRUE; |
2425 | ||
11343788 | 2426 | if (o->op_type == OP_RV2SV) |
79072805 LW |
2427 | return FALSE; |
2428 | ||
2429 | return FALSE; | |
2430 | } | |
2431 | ||
2432 | OP * | |
8ac85365 | 2433 | newASSIGNOP(I32 flags, OP *left, I32 optype, OP *right) |
79072805 | 2434 | { |
11343788 | 2435 | OP *o; |
79072805 | 2436 | |
a0d0e21e LW |
2437 | if (optype) { |
2438 | if (optype == OP_ANDASSIGN || optype == OP_ORASSIGN) { | |
2439 | return newLOGOP(optype, 0, | |
2440 | mod(scalar(left), optype), | |
2441 | newUNOP(OP_SASSIGN, 0, scalar(right))); | |
2442 | } | |
2443 | else { | |
2444 | return newBINOP(optype, OPf_STACKED, | |
2445 | mod(scalar(left), optype), scalar(right)); | |
2446 | } | |
2447 | } | |
2448 | ||
79072805 | 2449 | if (list_assignment(left)) { |
6ee623d5 | 2450 | dTHR; |
463ee0b2 | 2451 | modcount = 0; |
748a9306 | 2452 | eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ |
463ee0b2 | 2453 | left = mod(left, OP_AASSIGN); |
748a9306 LW |
2454 | if (eval_start) |
2455 | eval_start = 0; | |
2456 | else { | |
a0d0e21e LW |
2457 | op_free(left); |
2458 | op_free(right); | |
2459 | return Nullop; | |
2460 | } | |
11343788 | 2461 | o = newBINOP(OP_AASSIGN, flags, |
8990e307 LW |
2462 | list(force_list(right)), |
2463 | list(force_list(left)) ); | |
11343788 | 2464 | o->op_private = 0 | (flags >> 8); |
a0d0e21e | 2465 | if (!(left->op_private & OPpLVAL_INTRO)) { |
79072805 | 2466 | OP *curop; |
11343788 | 2467 | OP *lastop = o; |
79072805 | 2468 | generation++; |
11343788 | 2469 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
79072805 LW |
2470 | if (opargs[curop->op_type] & OA_DANGEROUS) { |
2471 | if (curop->op_type == OP_GV) { | |
2472 | GV *gv = ((GVOP*)curop)->op_gv; | |
2473 | if (gv == defgv || SvCUR(gv) == generation) | |
2474 | break; | |
2475 | SvCUR(gv) = generation; | |
2476 | } | |
748a9306 LW |
2477 | else if (curop->op_type == OP_PADSV || |
2478 | curop->op_type == OP_PADAV || | |
2479 | curop->op_type == OP_PADHV || | |
2480 | curop->op_type == OP_PADANY) { | |
2481 | SV **svp = AvARRAY(comppad_name); | |
8e07c86e | 2482 | SV *sv = svp[curop->op_targ]; |
748a9306 LW |
2483 | if (SvCUR(sv) == generation) |
2484 | break; | |
2485 | SvCUR(sv) = generation; /* (SvCUR not used any more) */ | |
2486 | } | |
79072805 LW |
2487 | else if (curop->op_type == OP_RV2CV) |
2488 | break; | |
2489 | else if (curop->op_type == OP_RV2SV || | |
2490 | curop->op_type == OP_RV2AV || | |
2491 | curop->op_type == OP_RV2HV || | |
2492 | curop->op_type == OP_RV2GV) { | |
2493 | if (lastop->op_type != OP_GV) /* funny deref? */ | |
2494 | break; | |
2495 | } | |
2496 | else | |
2497 | break; | |
2498 | } | |
2499 | lastop = curop; | |
2500 | } | |
11343788 MB |
2501 | if (curop != o) |
2502 | o->op_private = OPpASSIGN_COMMON; | |
79072805 | 2503 | } |
c07a80fd | 2504 | if (right && right->op_type == OP_SPLIT) { |
2505 | OP* tmpop; | |
2506 | if ((tmpop = ((LISTOP*)right)->op_first) && | |
2507 | tmpop->op_type == OP_PUSHRE) | |
2508 | { | |
2509 | PMOP *pm = (PMOP*)tmpop; | |
2510 | if (left->op_type == OP_RV2AV && | |
2511 | !(left->op_private & OPpLVAL_INTRO) && | |
11343788 | 2512 | !(o->op_private & OPpASSIGN_COMMON) ) |
c07a80fd | 2513 | { |
2514 | tmpop = ((UNOP*)left)->op_first; | |
2515 | if (tmpop->op_type == OP_GV && !pm->op_pmreplroot) { | |
2516 | pm->op_pmreplroot = (OP*)((GVOP*)tmpop)->op_gv; | |
2517 | pm->op_pmflags |= PMf_ONCE; | |
11343788 | 2518 | tmpop = cUNOPo->op_first; /* to list (nulled) */ |
c07a80fd | 2519 | tmpop = ((UNOP*)tmpop)->op_first; /* to pushmark */ |
2520 | tmpop->op_sibling = Nullop; /* don't free split */ | |
2521 | right->op_next = tmpop->op_next; /* fix starting loc */ | |
11343788 | 2522 | op_free(o); /* blow off assign */ |
54310121 | 2523 | right->op_flags &= ~OPf_WANT; |
a5f75d66 | 2524 | /* "I don't know and I don't care." */ |
c07a80fd | 2525 | return right; |
2526 | } | |
2527 | } | |
2528 | else { | |
2529 | if (modcount < 10000 && | |
2530 | ((LISTOP*)right)->op_last->op_type == OP_CONST) | |
2531 | { | |
2532 | SV *sv = ((SVOP*)((LISTOP*)right)->op_last)->op_sv; | |
2533 | if (SvIVX(sv) == 0) | |
2534 | sv_setiv(sv, modcount+1); | |
2535 | } | |
2536 | } | |
2537 | } | |
2538 | } | |
11343788 | 2539 | return o; |
79072805 LW |
2540 | } |
2541 | if (!right) | |
2542 | right = newOP(OP_UNDEF, 0); | |
2543 | if (right->op_type == OP_READLINE) { | |
2544 | right->op_flags |= OPf_STACKED; | |
463ee0b2 | 2545 | return newBINOP(OP_NULL, flags, mod(scalar(left), OP_SASSIGN), scalar(right)); |
79072805 | 2546 | } |
a0d0e21e | 2547 | else { |
748a9306 | 2548 | eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ |
11343788 | 2549 | o = newBINOP(OP_SASSIGN, flags, |
463ee0b2 | 2550 | scalar(right), mod(scalar(left), OP_SASSIGN) ); |
748a9306 LW |
2551 | if (eval_start) |
2552 | eval_start = 0; | |
2553 | else { | |
11343788 | 2554 | op_free(o); |
a0d0e21e LW |
2555 | return Nullop; |
2556 | } | |
2557 | } | |
11343788 | 2558 | return o; |
79072805 LW |
2559 | } |
2560 | ||
2561 | OP * | |
8ac85365 | 2562 | newSTATEOP(I32 flags, char *label, OP *o) |
79072805 | 2563 | { |
11343788 | 2564 | dTHR; |
bbce6d69 | 2565 | U32 seq = intro_my(); |
79072805 LW |
2566 | register COP *cop; |
2567 | ||
2568 | Newz(1101, cop, 1, COP); | |
84902520 | 2569 | if (PERLDB_LINE && curcop->cop_line && curstash != debstash) { |
8990e307 LW |
2570 | cop->op_type = OP_DBSTATE; |
2571 | cop->op_ppaddr = ppaddr[ OP_DBSTATE ]; | |
2572 | } | |
2573 | else { | |
2574 | cop->op_type = OP_NEXTSTATE; | |
2575 | cop->op_ppaddr = ppaddr[ OP_NEXTSTATE ]; | |
2576 | } | |
79072805 | 2577 | cop->op_flags = flags; |
c07a80fd | 2578 | cop->op_private = 0 | (flags >> 8); |
ff0cee69 | 2579 | #ifdef NATIVE_HINTS |
2580 | cop->op_private |= NATIVE_HINTS; | |
2581 | #endif | |
79072805 LW |
2582 | cop->op_next = (OP*)cop; |
2583 | ||
463ee0b2 LW |
2584 | if (label) { |
2585 | cop->cop_label = label; | |
85e6fe83 | 2586 | hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 2587 | } |
bbce6d69 | 2588 | cop->cop_seq = seq; |
a0d0e21e | 2589 | cop->cop_arybase = curcop->cop_arybase; |
79072805 LW |
2590 | |
2591 | if (copline == NOLINE) | |
2592 | cop->cop_line = curcop->cop_line; | |
2593 | else { | |
2594 | cop->cop_line = copline; | |
2595 | copline = NOLINE; | |
2596 | } | |
44a8e56a | 2597 | cop->cop_filegv = (GV*)SvREFCNT_inc(curcop->cop_filegv); |
79072805 LW |
2598 | cop->cop_stash = curstash; |
2599 | ||
84902520 | 2600 | if (PERLDB_LINE && curstash != debstash) { |
93a17b20 LW |
2601 | SV **svp = av_fetch(GvAV(curcop->cop_filegv),(I32)cop->cop_line, FALSE); |
2602 | if (svp && *svp != &sv_undef && !SvIOK(*svp)) { | |
a0d0e21e | 2603 | (void)SvIOK_on(*svp); |
a5f75d66 | 2604 | SvIVX(*svp) = 1; |
93a17b20 LW |
2605 | SvSTASH(*svp) = (HV*)cop; |
2606 | } | |
2607 | } | |
2608 | ||
11343788 | 2609 | return prepend_elem(OP_LINESEQ, (OP*)cop, o); |
79072805 LW |
2610 | } |
2611 | ||
bbce6d69 | 2612 | /* "Introduce" my variables to visible status. */ |
2613 | U32 | |
8ac85365 | 2614 | intro_my(void) |
bbce6d69 | 2615 | { |
2616 | SV **svp; | |
2617 | SV *sv; | |
2618 | I32 i; | |
2619 | ||
2620 | if (! min_intro_pending) | |
2621 | return cop_seqmax; | |
2622 | ||
2623 | svp = AvARRAY(comppad_name); | |
2624 | for (i = min_intro_pending; i <= max_intro_pending; i++) { | |
2625 | if ((sv = svp[i]) && sv != &sv_undef && !SvIVX(sv)) { | |
2626 | SvIVX(sv) = 999999999; /* Don't know scope end yet. */ | |
2627 | SvNVX(sv) = (double)cop_seqmax; | |
2628 | } | |
2629 | } | |
2630 | min_intro_pending = 0; | |
2631 | comppad_name_fill = max_intro_pending; /* Needn't search higher */ | |
2632 | return cop_seqmax++; | |
2633 | } | |
2634 | ||
79072805 | 2635 | OP * |
8ac85365 | 2636 | newLOGOP(I32 type, I32 flags, OP *first, OP *other) |
79072805 | 2637 | { |
883ffac3 CS |
2638 | return new_logop(type, flags, &first, &other); |
2639 | } | |
2640 | ||
3bd495df | 2641 | STATIC OP * |
883ffac3 CS |
2642 | new_logop(I32 type, I32 flags, OP** firstp, OP** otherp) |
2643 | { | |
11343788 | 2644 | dTHR; |
79072805 | 2645 | LOGOP *logop; |
11343788 | 2646 | OP *o; |
883ffac3 CS |
2647 | OP *first = *firstp; |
2648 | OP *other = *otherp; | |
79072805 | 2649 | |
a0d0e21e LW |
2650 | if (type == OP_XOR) /* Not short circuit, but here by precedence. */ |
2651 | return newBINOP(type, flags, scalar(first), scalar(other)); | |
2652 | ||
8990e307 | 2653 | scalarboolean(first); |
79072805 LW |
2654 | /* optimize "!a && b" to "a || b", and "!a || b" to "a && b" */ |
2655 | if (first->op_type == OP_NOT && (first->op_flags & OPf_SPECIAL)) { | |
2656 | if (type == OP_AND || type == OP_OR) { | |
2657 | if (type == OP_AND) | |
2658 | type = OP_OR; | |
2659 | else | |
2660 | type = OP_AND; | |
11343788 | 2661 | o = first; |
883ffac3 | 2662 | first = *firstp = cUNOPo->op_first; |
11343788 MB |
2663 | if (o->op_next) |
2664 | first->op_next = o->op_next; | |
2665 | cUNOPo->op_first = Nullop; | |
2666 | op_free(o); | |
79072805 LW |
2667 | } |
2668 | } | |
2669 | if (first->op_type == OP_CONST) { | |
93a17b20 | 2670 | if (dowarn && (first->op_private & OPpCONST_BARE)) |
c07a80fd | 2671 | warn("Probable precedence problem on %s", op_desc[type]); |
79072805 LW |
2672 | if ((type == OP_AND) == (SvTRUE(((SVOP*)first)->op_sv))) { |
2673 | op_free(first); | |
883ffac3 | 2674 | *firstp = Nullop; |
79072805 LW |
2675 | return other; |
2676 | } | |
2677 | else { | |
2678 | op_free(other); | |
883ffac3 | 2679 | *otherp = Nullop; |
79072805 LW |
2680 | return first; |
2681 | } | |
2682 | } | |
2683 | else if (first->op_type == OP_WANTARRAY) { | |
2684 | if (type == OP_AND) | |
2685 | list(other); | |
2686 | else | |
2687 | scalar(other); | |
2688 | } | |
a6006777 | 2689 | else if (dowarn && (first->op_flags & OPf_KIDS)) { |
2690 | OP *k1 = ((UNOP*)first)->op_first; | |
2691 | OP *k2 = k1->op_sibling; | |
2692 | OPCODE warnop = 0; | |
2693 | switch (first->op_type) | |
2694 | { | |
2695 | case OP_NULL: | |
2696 | if (k2 && k2->op_type == OP_READLINE | |
2697 | && (k2->op_flags & OPf_STACKED) | |
55d729e4 | 2698 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
a6006777 | 2699 | warnop = k2->op_type; |
2700 | break; | |
2701 | ||
2702 | case OP_SASSIGN: | |
68dc0745 | 2703 | if (k1->op_type == OP_READDIR |
2704 | || k1->op_type == OP_GLOB | |
2705 | || k1->op_type == OP_EACH) | |
a6006777 | 2706 | warnop = k1->op_type; |
2707 | break; | |
2708 | } | |
8ebc5c01 | 2709 | if (warnop) { |
2710 | line_t oldline = curcop->cop_line; | |
2711 | curcop->cop_line = copline; | |
68dc0745 | 2712 | warn("Value of %s%s can be \"0\"; test with defined()", |
2713 | op_desc[warnop], | |
2714 | ((warnop == OP_READLINE || warnop == OP_GLOB) | |
2715 | ? " construct" : "() operator")); | |
2716 | curcop->cop_line = oldline; | |
8ebc5c01 | 2717 | } |
a6006777 | 2718 | } |
79072805 LW |
2719 | |
2720 | if (!other) | |
2721 | return first; | |
2722 | ||
a0d0e21e LW |
2723 | if (type == OP_ANDASSIGN || type == OP_ORASSIGN) |
2724 | other->op_private |= OPpASSIGN_BACKWARDS; /* other is an OP_SASSIGN */ | |
2725 | ||
79072805 LW |
2726 | Newz(1101, logop, 1, LOGOP); |
2727 | ||
2728 | logop->op_type = type; | |
2729 | logop->op_ppaddr = ppaddr[type]; | |
2730 | logop->op_first = first; | |
2731 | logop->op_flags = flags | OPf_KIDS; | |
2732 | logop->op_other = LINKLIST(other); | |
c07a80fd | 2733 | logop->op_private = 1 | (flags >> 8); |
79072805 LW |
2734 | |
2735 | /* establish postfix order */ | |
2736 | logop->op_next = LINKLIST(first); | |
2737 | first->op_next = (OP*)logop; | |
2738 | first->op_sibling = other; | |
2739 | ||
11343788 MB |
2740 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
2741 | other->op_next = o; | |
79072805 | 2742 | |
11343788 | 2743 | return o; |
79072805 LW |
2744 | } |
2745 | ||
2746 | OP * | |
8ac85365 | 2747 | newCONDOP(I32 flags, OP *first, OP *trueop, OP *falseop) |
79072805 | 2748 | { |
11343788 | 2749 | dTHR; |
79072805 | 2750 | CONDOP *condop; |
11343788 | 2751 | OP *o; |
79072805 | 2752 | |
b1cb66bf | 2753 | if (!falseop) |
2754 | return newLOGOP(OP_AND, 0, first, trueop); | |
2755 | if (!trueop) | |
2756 | return newLOGOP(OP_OR, 0, first, falseop); | |
79072805 | 2757 | |
8990e307 | 2758 | scalarboolean(first); |
79072805 LW |
2759 | if (first->op_type == OP_CONST) { |
2760 | if (SvTRUE(((SVOP*)first)->op_sv)) { | |
2761 | op_free(first); | |
b1cb66bf | 2762 | op_free(falseop); |
2763 | return trueop; | |
79072805 LW |
2764 | } |
2765 | else { | |
2766 | op_free(first); | |
b1cb66bf | 2767 | op_free(trueop); |
2768 | return falseop; | |
79072805 LW |
2769 | } |
2770 | } | |
2771 | else if (first->op_type == OP_WANTARRAY) { | |
b1cb66bf | 2772 | list(trueop); |
2773 | scalar(falseop); | |
79072805 LW |
2774 | } |
2775 | Newz(1101, condop, 1, CONDOP); | |
2776 | ||
2777 | condop->op_type = OP_COND_EXPR; | |
2778 | condop->op_ppaddr = ppaddr[OP_COND_EXPR]; | |
2779 | condop->op_first = first; | |
2780 | condop->op_flags = flags | OPf_KIDS; | |
b1cb66bf | 2781 | condop->op_true = LINKLIST(trueop); |
2782 | condop->op_false = LINKLIST(falseop); | |
c07a80fd | 2783 | condop->op_private = 1 | (flags >> 8); |
79072805 LW |
2784 | |
2785 | /* establish postfix order */ | |
2786 | condop->op_next = LINKLIST(first); | |
2787 | first->op_next = (OP*)condop; | |
2788 | ||
b1cb66bf | 2789 | first->op_sibling = trueop; |
2790 | trueop->op_sibling = falseop; | |
11343788 | 2791 | o = newUNOP(OP_NULL, 0, (OP*)condop); |
79072805 | 2792 | |
5dc0d613 MB |
2793 | trueop->op_next = o; |
2794 | falseop->op_next = o; | |
79072805 | 2795 | |
11343788 | 2796 | return o; |
79072805 LW |
2797 | } |
2798 | ||
2799 | OP * | |
8ac85365 | 2800 | newRANGE(I32 flags, OP *left, OP *right) |
79072805 | 2801 | { |
b35b2403 | 2802 | dTHR; |
79072805 LW |
2803 | CONDOP *condop; |
2804 | OP *flip; | |
2805 | OP *flop; | |
11343788 | 2806 | OP *o; |
79072805 LW |
2807 | |
2808 | Newz(1101, condop, 1, CONDOP); | |
2809 | ||
2810 | condop->op_type = OP_RANGE; | |
2811 | condop->op_ppaddr = ppaddr[OP_RANGE]; | |
2812 | condop->op_first = left; | |
2813 | condop->op_flags = OPf_KIDS; | |
2814 | condop->op_true = LINKLIST(left); | |
2815 | condop->op_false = LINKLIST(right); | |
c07a80fd | 2816 | condop->op_private = 1 | (flags >> 8); |
79072805 LW |
2817 | |
2818 | left->op_sibling = right; | |
2819 | ||
2820 | condop->op_next = (OP*)condop; | |
2821 | flip = newUNOP(OP_FLIP, flags, (OP*)condop); | |
2822 | flop = newUNOP(OP_FLOP, 0, flip); | |
11343788 | 2823 | o = newUNOP(OP_NULL, 0, flop); |
79072805 LW |
2824 | linklist(flop); |
2825 | ||
2826 | left->op_next = flip; | |
2827 | right->op_next = flop; | |
2828 | ||
ed6116ce | 2829 | condop->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 | 2830 | sv_upgrade(PAD_SV(condop->op_targ), SVt_PVNV); |
ed6116ce | 2831 | flip->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 LW |
2832 | sv_upgrade(PAD_SV(flip->op_targ), SVt_PVNV); |
2833 | ||
2834 | flip->op_private = left->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
2835 | flop->op_private = right->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
2836 | ||
11343788 | 2837 | flip->op_next = o; |
79072805 | 2838 | if (!flip->op_private || !flop->op_private) |
11343788 | 2839 | linklist(o); /* blow off optimizer unless constant */ |
79072805 | 2840 | |
11343788 | 2841 | return o; |
79072805 LW |
2842 | } |
2843 | ||
2844 | OP * | |
8ac85365 | 2845 | newLOOPOP(I32 flags, I32 debuggable, OP *expr, OP *block) |
79072805 | 2846 | { |
11343788 | 2847 | dTHR; |
463ee0b2 | 2848 | OP* listop; |
11343788 | 2849 | OP* o; |
463ee0b2 | 2850 | int once = block && block->op_flags & OPf_SPECIAL && |
a0d0e21e | 2851 | (block->op_type == OP_ENTERSUB || block->op_type == OP_NULL); |
93a17b20 | 2852 | |
463ee0b2 LW |
2853 | if (expr) { |
2854 | if (once && expr->op_type == OP_CONST && !SvTRUE(((SVOP*)expr)->op_sv)) | |
2855 | return block; /* do {} while 0 does once */ | |
fb73857a | 2856 | if (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB |
2857 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB)) { | |
774d564b | 2858 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 2859 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 GS |
2860 | } else if (expr->op_flags & OPf_KIDS) { |
2861 | OP *k1 = ((UNOP*)expr)->op_first; | |
2862 | OP *k2 = (k1) ? k1->op_sibling : NULL; | |
2863 | switch (expr->op_type) { | |
2864 | case OP_NULL: | |
2865 | if (k2 && k2->op_type == OP_READLINE | |
2866 | && (k2->op_flags & OPf_STACKED) | |
2867 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) | |
2868 | expr = newUNOP(OP_DEFINED, 0, expr); | |
2869 | break; | |
2870 | ||
2871 | case OP_SASSIGN: | |
2872 | if (k1->op_type == OP_READDIR | |
2873 | || k1->op_type == OP_GLOB | |
2874 | || k1->op_type == OP_EACH) | |
2875 | expr = newUNOP(OP_DEFINED, 0, expr); | |
2876 | break; | |
2877 | } | |
774d564b | 2878 | } |
463ee0b2 | 2879 | } |
93a17b20 | 2880 | |
8990e307 | 2881 | listop = append_elem(OP_LINESEQ, block, newOP(OP_UNSTACK, 0)); |
883ffac3 | 2882 | o = new_logop(OP_AND, 0, &expr, &listop); |
463ee0b2 | 2883 | |
883ffac3 CS |
2884 | if (listop) |
2885 | ((LISTOP*)listop)->op_last->op_next = LINKLIST(o); | |
79072805 | 2886 | |
11343788 MB |
2887 | if (once && o != listop) |
2888 | o->op_next = ((LOGOP*)cUNOPo->op_first)->op_other; | |
79072805 | 2889 | |
11343788 MB |
2890 | if (o == listop) |
2891 | o = newUNOP(OP_NULL, 0, o); /* or do {} while 1 loses outer block */ | |
748a9306 | 2892 | |
11343788 MB |
2893 | o->op_flags |= flags; |
2894 | o = scope(o); | |
2895 | o->op_flags |= OPf_SPECIAL; /* suppress POPBLOCK curpm restoration*/ | |
2896 | return o; | |
79072805 LW |
2897 | } |
2898 | ||
2899 | OP * | |
8ac85365 | 2900 | newWHILEOP(I32 flags, I32 debuggable, LOOP *loop, I32 whileline, OP *expr, OP *block, OP *cont) |
79072805 | 2901 | { |
11343788 | 2902 | dTHR; |
79072805 LW |
2903 | OP *redo; |
2904 | OP *next = 0; | |
2905 | OP *listop; | |
11343788 | 2906 | OP *o; |
79072805 LW |
2907 | OP *condop; |
2908 | ||
fb73857a | 2909 | if (expr && (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB |
2910 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB))) { | |
748a9306 | 2911 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 2912 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 GS |
2913 | } else if (expr && (expr->op_flags & OPf_KIDS)) { |
2914 | OP *k1 = ((UNOP*)expr)->op_first; | |
2915 | OP *k2 = (k1) ? k1->op_sibling : NULL; | |
2916 | switch (expr->op_type) { | |
2917 | case OP_NULL: | |
2918 | if (k2 && k2->op_type == OP_READLINE | |
2919 | && (k2->op_flags & OPf_STACKED) | |
2920 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) | |
2921 | expr = newUNOP(OP_DEFINED, 0, expr); | |
2922 | break; | |
2923 | ||
2924 | case OP_SASSIGN: | |
2925 | if (k1->op_type == OP_READDIR | |
2926 | || k1->op_type == OP_GLOB | |
2927 | || k1->op_type == OP_EACH) | |
2928 | expr = newUNOP(OP_DEFINED, 0, expr); | |
2929 | break; | |
2930 | } | |
748a9306 | 2931 | } |
79072805 LW |
2932 | |
2933 | if (!block) | |
2934 | block = newOP(OP_NULL, 0); | |
2935 | ||
2936 | if (cont) | |
2937 | next = LINKLIST(cont); | |
fb73857a | 2938 | if (expr) { |
79072805 | 2939 | cont = append_elem(OP_LINESEQ, cont, newOP(OP_UNSTACK, 0)); |
fb73857a | 2940 | if ((line_t)whileline != NOLINE) { |
2941 | copline = whileline; | |
2942 | cont = append_elem(OP_LINESEQ, cont, | |
2943 | newSTATEOP(0, Nullch, Nullop)); | |
2944 | } | |
2945 | } | |
79072805 | 2946 | |
463ee0b2 | 2947 | listop = append_list(OP_LINESEQ, (LISTOP*)block, (LISTOP*)cont); |
79072805 LW |
2948 | redo = LINKLIST(listop); |
2949 | ||
2950 | if (expr) { | |
883ffac3 CS |
2951 | copline = whileline; |
2952 | scalar(listop); | |
2953 | o = new_logop(OP_AND, 0, &expr, &listop); | |
11343788 | 2954 | if (o == expr && o->op_type == OP_CONST && !SvTRUE(cSVOPo->op_sv)) { |
85e6fe83 | 2955 | op_free(expr); /* oops, it's a while (0) */ |
463ee0b2 | 2956 | op_free((OP*)loop); |
883ffac3 | 2957 | return Nullop; /* listop already freed by new_logop */ |
463ee0b2 | 2958 | } |
883ffac3 CS |
2959 | if (listop) |
2960 | ((LISTOP*)listop)->op_last->op_next = condop = | |
2961 | (o == listop ? redo : LINKLIST(o)); | |
79072805 LW |
2962 | if (!next) |
2963 | next = condop; | |
2964 | } | |
2965 | else | |
11343788 | 2966 | o = listop; |
79072805 LW |
2967 | |
2968 | if (!loop) { | |
2969 | Newz(1101,loop,1,LOOP); | |
2970 | loop->op_type = OP_ENTERLOOP; | |
2971 | loop->op_ppaddr = ppaddr[OP_ENTERLOOP]; | |
2972 | loop->op_private = 0; | |
2973 | loop->op_next = (OP*)loop; | |
2974 | } | |
2975 | ||
11343788 | 2976 | o = newBINOP(OP_LEAVELOOP, 0, (OP*)loop, o); |
79072805 LW |
2977 | |
2978 | loop->op_redoop = redo; | |
11343788 | 2979 | loop->op_lastop = o; |
79072805 LW |
2980 | |
2981 | if (next) | |
2982 | loop->op_nextop = next; | |
2983 | else | |
11343788 | 2984 | loop->op_nextop = o; |
79072805 | 2985 | |
11343788 MB |
2986 | o->op_flags |= flags; |
2987 | o->op_private |= (flags >> 8); | |
2988 | return o; | |
79072805 LW |
2989 | } |
2990 | ||
2991 | OP * | |
8990e307 | 2992 | newFOROP(I32 flags,char *label,line_t forline,OP *sv,OP *expr,OP *block,OP *cont) |
79072805 LW |
2993 | { |
2994 | LOOP *loop; | |
fb73857a | 2995 | OP *wop; |
85e6fe83 | 2996 | int padoff = 0; |
4633a7c4 | 2997 | I32 iterflags = 0; |
79072805 | 2998 | |
79072805 | 2999 | if (sv) { |
85e6fe83 | 3000 | if (sv->op_type == OP_RV2SV) { /* symbol table variable */ |
748a9306 LW |
3001 | sv->op_type = OP_RV2GV; |
3002 | sv->op_ppaddr = ppaddr[OP_RV2GV]; | |
79072805 | 3003 | } |
85e6fe83 LW |
3004 | else if (sv->op_type == OP_PADSV) { /* private variable */ |
3005 | padoff = sv->op_targ; | |
3006 | op_free(sv); | |
3007 | sv = Nullop; | |
3008 | } | |
54b9620d MB |
3009 | else if (sv->op_type == OP_THREADSV) { /* per-thread variable */ |
3010 | padoff = sv->op_targ; | |
3011 | iterflags |= OPf_SPECIAL; | |
3012 | op_free(sv); | |
3013 | sv = Nullop; | |
3014 | } | |
79072805 | 3015 | else |
c07a80fd | 3016 | croak("Can't use %s for loop variable", op_desc[sv->op_type]); |
79072805 LW |
3017 | } |
3018 | else { | |
54b9620d MB |
3019 | #ifdef USE_THREADS |
3020 | padoff = find_threadsv("_"); | |
3021 | iterflags |= OPf_SPECIAL; | |
3022 | #else | |
79072805 | 3023 | sv = newGVOP(OP_GV, 0, defgv); |
54b9620d | 3024 | #endif |
79072805 | 3025 | } |
5f05dabc | 3026 | if (expr->op_type == OP_RV2AV || expr->op_type == OP_PADAV) { |
4633a7c4 LW |
3027 | expr = scalar(ref(expr, OP_ITER)); |
3028 | iterflags |= OPf_STACKED; | |
3029 | } | |
3030 | loop = (LOOP*)list(convert(OP_ENTERITER, iterflags, | |
a0d0e21e LW |
3031 | append_elem(OP_LIST, mod(force_list(expr), OP_GREPSTART), |
3032 | scalar(sv)))); | |
85e6fe83 LW |
3033 | assert(!loop->op_next); |
3034 | Renew(loop, 1, LOOP); | |
3035 | loop->op_targ = padoff; | |
fb73857a | 3036 | wop = newWHILEOP(flags, 1, loop, forline, newOP(OP_ITER, 0), block, cont); |
3037 | copline = forline; | |
3038 | return newSTATEOP(0, label, wop); | |
79072805 LW |
3039 | } |
3040 | ||
8990e307 | 3041 | OP* |
8ac85365 | 3042 | newLOOPEX(I32 type, OP *label) |
8990e307 | 3043 | { |
11343788 MB |
3044 | dTHR; |
3045 | OP *o; | |
8990e307 | 3046 | if (type != OP_GOTO || label->op_type == OP_CONST) { |
cdaebead MB |
3047 | /* "last()" means "last" */ |
3048 | if (label->op_type == OP_STUB && (label->op_flags & OPf_PARENS)) | |
3049 | o = newOP(type, OPf_SPECIAL); | |
3050 | else { | |
3051 | o = newPVOP(type, 0, savepv(label->op_type == OP_CONST | |
3052 | ? SvPVx(((SVOP*)label)->op_sv, na) | |
3053 | : "")); | |
3054 | } | |
8990e307 LW |
3055 | op_free(label); |
3056 | } | |
3057 | else { | |
a0d0e21e LW |
3058 | if (label->op_type == OP_ENTERSUB) |
3059 | label = newUNOP(OP_REFGEN, 0, mod(label, OP_REFGEN)); | |
11343788 | 3060 | o = newUNOP(type, OPf_STACKED, label); |
8990e307 | 3061 | } |
85e6fe83 | 3062 | hints |= HINT_BLOCK_SCOPE; |
11343788 | 3063 | return o; |
8990e307 LW |
3064 | } |
3065 | ||
79072805 | 3066 | void |
8ac85365 | 3067 | cv_undef(CV *cv) |
79072805 | 3068 | { |
11343788 MB |
3069 | dTHR; |
3070 | #ifdef USE_THREADS | |
e858de61 MB |
3071 | if (CvMUTEXP(cv)) { |
3072 | MUTEX_DESTROY(CvMUTEXP(cv)); | |
3073 | Safefree(CvMUTEXP(cv)); | |
3074 | CvMUTEXP(cv) = 0; | |
3075 | } | |
11343788 MB |
3076 | #endif /* USE_THREADS */ |
3077 | ||
a0d0e21e | 3078 | if (!CvXSUB(cv) && CvROOT(cv)) { |
11343788 MB |
3079 | #ifdef USE_THREADS |
3080 | if (CvDEPTH(cv) || (CvOWNER(cv) && CvOWNER(cv) != thr)) | |
3081 | croak("Can't undef active subroutine"); | |
3082 | #else | |
a0d0e21e LW |
3083 | if (CvDEPTH(cv)) |
3084 | croak("Can't undef active subroutine"); | |
11343788 | 3085 | #endif /* USE_THREADS */ |
8990e307 | 3086 | ENTER; |
a0d0e21e LW |
3087 | |
3088 | SAVESPTR(curpad); | |
3089 | curpad = 0; | |
3090 | ||
a5f75d66 | 3091 | if (!CvCLONED(cv)) |
748a9306 | 3092 | op_free(CvROOT(cv)); |
79072805 | 3093 | CvROOT(cv) = Nullop; |
8990e307 | 3094 | LEAVE; |
79072805 | 3095 | } |
1d5db326 | 3096 | SvPOK_off((SV*)cv); /* forget prototype */ |
44a8e56a | 3097 | CvFLAGS(cv) = 0; |
8e07c86e AD |
3098 | SvREFCNT_dec(CvGV(cv)); |
3099 | CvGV(cv) = Nullgv; | |
3100 | SvREFCNT_dec(CvOUTSIDE(cv)); | |
3101 | CvOUTSIDE(cv) = Nullcv; | |
3102 | if (CvPADLIST(cv)) { | |
8ebc5c01 | 3103 | /* may be during global destruction */ |
3104 | if (SvREFCNT(CvPADLIST(cv))) { | |
93965878 | 3105 | I32 i = AvFILLp(CvPADLIST(cv)); |
8ebc5c01 | 3106 | while (i >= 0) { |
3107 | SV** svp = av_fetch(CvPADLIST(cv), i--, FALSE); | |
46fc3d4c | 3108 | SV* sv = svp ? *svp : Nullsv; |
3109 | if (!sv) | |
3110 | continue; | |
3111 | if (sv == (SV*)comppad_name) | |
3112 | comppad_name = Nullav; | |
3113 | else if (sv == (SV*)comppad) { | |
3114 | comppad = Nullav; | |
3115 | curpad = Null(SV**); | |
3116 | } | |
3117 | SvREFCNT_dec(sv); | |
8ebc5c01 | 3118 | } |
3119 | SvREFCNT_dec((SV*)CvPADLIST(cv)); | |
8e07c86e | 3120 | } |
8e07c86e AD |
3121 | CvPADLIST(cv) = Nullav; |
3122 | } | |
79072805 LW |
3123 | } |
3124 | ||
5f05dabc | 3125 | #ifdef DEBUG_CLOSURES |
76e3520e | 3126 | STATIC void |
5f05dabc | 3127 | cv_dump(cv) |
3128 | CV* cv; | |
3129 | { | |
3130 | CV *outside = CvOUTSIDE(cv); | |
3131 | AV* padlist = CvPADLIST(cv); | |
4fdae800 | 3132 | AV* pad_name; |
3133 | AV* pad; | |
3134 | SV** pname; | |
3135 | SV** ppad; | |
5f05dabc | 3136 | I32 ix; |
3137 | ||
fb73857a | 3138 | PerlIO_printf(Perl_debug_log, "\tCV=0x%lx (%s), OUTSIDE=0x%lx (%s)\n", |
ab50184a CS |
3139 | cv, |
3140 | (CvANON(cv) ? "ANON" | |
3141 | : (cv == main_cv) ? "MAIN" | |
07055b4c | 3142 | : CvUNIQUE(outside) ? "UNIQUE" |
44a8e56a | 3143 | : CvGV(cv) ? GvNAME(CvGV(cv)) : "UNDEFINED"), |
ab50184a CS |
3144 | outside, |
3145 | (!outside ? "null" | |
3146 | : CvANON(outside) ? "ANON" | |
3147 | : (outside == main_cv) ? "MAIN" | |
07055b4c | 3148 | : CvUNIQUE(outside) ? "UNIQUE" |
44a8e56a | 3149 | : CvGV(outside) ? GvNAME(CvGV(outside)) : "UNDEFINED")); |
5f05dabc | 3150 | |
4fdae800 | 3151 | if (!padlist) |
3152 | return; | |
3153 | ||
3154 | pad_name = (AV*)*av_fetch(padlist, 0, FALSE); | |
3155 | pad = (AV*)*av_fetch(padlist, 1, FALSE); | |
3156 | pname = AvARRAY(pad_name); | |
3157 | ppad = AvARRAY(pad); | |
3158 | ||
93965878 | 3159 | for (ix = 1; ix <= AvFILLp(pad_name); ix++) { |
5f05dabc | 3160 | if (SvPOK(pname[ix])) |
fb73857a | 3161 | PerlIO_printf(Perl_debug_log, "\t%4d. 0x%lx (%s\"%s\" %ld-%ld)\n", |
4fdae800 | 3162 | ix, ppad[ix], |
3163 | SvFAKE(pname[ix]) ? "FAKE " : "", | |
3164 | SvPVX(pname[ix]), | |
ab50184a CS |
3165 | (long)I_32(SvNVX(pname[ix])), |
3166 | (long)SvIVX(pname[ix])); | |
5f05dabc | 3167 | } |
3168 | } | |
3169 | #endif /* DEBUG_CLOSURES */ | |
3170 | ||
76e3520e | 3171 | STATIC CV * |
8ac85365 | 3172 | cv_clone2(CV *proto, CV *outside) |
748a9306 | 3173 | { |
11343788 | 3174 | dTHR; |
748a9306 LW |
3175 | AV* av; |
3176 | I32 ix; | |
3177 | AV* protopadlist = CvPADLIST(proto); | |
3178 | AV* protopad_name = (AV*)*av_fetch(protopadlist, 0, FALSE); | |
3179 | AV* protopad = (AV*)*av_fetch(protopadlist, 1, FALSE); | |
5f05dabc | 3180 | SV** pname = AvARRAY(protopad_name); |
3181 | SV** ppad = AvARRAY(protopad); | |
93965878 NIS |
3182 | I32 fname = AvFILLp(protopad_name); |
3183 | I32 fpad = AvFILLp(protopad); | |
748a9306 LW |
3184 | AV* comppadlist; |
3185 | CV* cv; | |
3186 | ||
07055b4c CS |
3187 | assert(!CvUNIQUE(proto)); |
3188 | ||
748a9306 LW |
3189 | ENTER; |
3190 | SAVESPTR(curpad); | |
3191 | SAVESPTR(comppad); | |
46fc3d4c | 3192 | SAVESPTR(comppad_name); |
748a9306 LW |
3193 | SAVESPTR(compcv); |
3194 | ||
3195 | cv = compcv = (CV*)NEWSV(1104,0); | |
fa83b5b6 | 3196 | sv_upgrade((SV *)cv, SvTYPE(proto)); |
a5f75d66 | 3197 | CvCLONED_on(cv); |
5f05dabc | 3198 | if (CvANON(proto)) |
3199 | CvANON_on(cv); | |
748a9306 | 3200 | |
11343788 | 3201 | #ifdef USE_THREADS |
12ca11f6 | 3202 | New(666, CvMUTEXP(cv), 1, perl_mutex); |
11343788 | 3203 | MUTEX_INIT(CvMUTEXP(cv)); |
11343788 MB |
3204 | CvOWNER(cv) = 0; |
3205 | #endif /* USE_THREADS */ | |
748a9306 | 3206 | CvFILEGV(cv) = CvFILEGV(proto); |
44a8e56a | 3207 | CvGV(cv) = (GV*)SvREFCNT_inc(CvGV(proto)); |
748a9306 LW |
3208 | CvSTASH(cv) = CvSTASH(proto); |
3209 | CvROOT(cv) = CvROOT(proto); | |
3210 | CvSTART(cv) = CvSTART(proto); | |
5f05dabc | 3211 | if (outside) |
3212 | CvOUTSIDE(cv) = (CV*)SvREFCNT_inc(outside); | |
748a9306 | 3213 | |
68dc0745 | 3214 | if (SvPOK(proto)) |
3215 | sv_setpvn((SV*)cv, SvPVX(proto), SvCUR(proto)); | |
3216 | ||
46fc3d4c | 3217 | comppad_name = newAV(); |
3218 | for (ix = fname; ix >= 0; ix--) | |
3219 | av_store(comppad_name, ix, SvREFCNT_inc(pname[ix])); | |
748a9306 LW |
3220 | |
3221 | comppad = newAV(); | |
3222 | ||
3223 | comppadlist = newAV(); | |
3224 | AvREAL_off(comppadlist); | |
46fc3d4c | 3225 | av_store(comppadlist, 0, (SV*)comppad_name); |
b355b4e0 | 3226 | av_store(comppadlist, 1, (SV*)comppad); |
748a9306 | 3227 | CvPADLIST(cv) = comppadlist; |
93965878 | 3228 | av_fill(comppad, AvFILLp(protopad)); |
748a9306 LW |
3229 | curpad = AvARRAY(comppad); |
3230 | ||
3231 | av = newAV(); /* will be @_ */ | |
3232 | av_extend(av, 0); | |
3233 | av_store(comppad, 0, (SV*)av); | |
3234 | AvFLAGS(av) = AVf_REIFY; | |
3235 | ||
9607fc9c | 3236 | for (ix = fpad; ix > 0; ix--) { |
3237 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; | |
aa689395 | 3238 | if (namesv && namesv != &sv_undef) { |
3239 | char *name = SvPVX(namesv); /* XXX */ | |
3240 | if (SvFLAGS(namesv) & SVf_FAKE) { /* lexical from outside? */ | |
3241 | I32 off = pad_findlex(name, ix, SvIVX(namesv), | |
5f05dabc | 3242 | CvOUTSIDE(cv), cxstack_ix); |
3243 | if (!off) | |
3244 | curpad[ix] = SvREFCNT_inc(ppad[ix]); | |
3245 | else if (off != ix) | |
748a9306 LW |
3246 | croak("panic: cv_clone: %s", name); |
3247 | } | |
3248 | else { /* our own lexical */ | |
aa689395 | 3249 | SV* sv; |
5f05dabc | 3250 | if (*name == '&') { |
3251 | /* anon code -- we'll come back for it */ | |
3252 | sv = SvREFCNT_inc(ppad[ix]); | |
3253 | } | |
3254 | else if (*name == '@') | |
3255 | sv = (SV*)newAV(); | |
748a9306 | 3256 | else if (*name == '%') |
5f05dabc | 3257 | sv = (SV*)newHV(); |
748a9306 | 3258 | else |
5f05dabc | 3259 | sv = NEWSV(0,0); |
3260 | if (!SvPADBUSY(sv)) | |
3261 | SvPADMY_on(sv); | |
3262 | curpad[ix] = sv; | |
748a9306 LW |
3263 | } |
3264 | } | |
3265 | else { | |
aa689395 | 3266 | SV* sv = NEWSV(0,0); |
748a9306 | 3267 | SvPADTMP_on(sv); |
5f05dabc | 3268 | curpad[ix] = sv; |
748a9306 LW |
3269 | } |
3270 | } | |
3271 | ||
5f05dabc | 3272 | /* Now that vars are all in place, clone nested closures. */ |
3273 | ||
9607fc9c | 3274 | for (ix = fpad; ix > 0; ix--) { |
3275 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; | |
aa689395 | 3276 | if (namesv |
3277 | && namesv != &sv_undef | |
3278 | && !(SvFLAGS(namesv) & SVf_FAKE) | |
3279 | && *SvPVX(namesv) == '&' | |
5f05dabc | 3280 | && CvCLONE(ppad[ix])) |
3281 | { | |
3282 | CV *kid = cv_clone2((CV*)ppad[ix], cv); | |
3283 | SvREFCNT_dec(ppad[ix]); | |
3284 | CvCLONE_on(kid); | |
3285 | SvPADMY_on(kid); | |
3286 | curpad[ix] = (SV*)kid; | |
748a9306 LW |
3287 | } |
3288 | } | |
3289 | ||
5f05dabc | 3290 | #ifdef DEBUG_CLOSURES |
ab50184a CS |
3291 | PerlIO_printf(Perl_debug_log, "Cloned inside:\n"); |
3292 | cv_dump(outside); | |
3293 | PerlIO_printf(Perl_debug_log, " from:\n"); | |
5f05dabc | 3294 | cv_dump(proto); |
ab50184a | 3295 | PerlIO_printf(Perl_debug_log, " to:\n"); |
5f05dabc | 3296 | cv_dump(cv); |
3297 | #endif | |
3298 | ||
748a9306 LW |
3299 | LEAVE; |
3300 | return cv; | |
3301 | } | |
3302 | ||
3303 | CV * | |
8ac85365 | 3304 | cv_clone(CV *proto) |
5f05dabc | 3305 | { |
3306 | return cv_clone2(proto, CvOUTSIDE(proto)); | |
3307 | } | |
3308 | ||
3fe9a6f1 | 3309 | void |
8ac85365 | 3310 | cv_ckproto(CV *cv, GV *gv, char *p) |
3fe9a6f1 | 3311 | { |
3312 | if ((!p != !SvPOK(cv)) || (p && strNE(p, SvPVX(cv)))) { | |
46fc3d4c | 3313 | SV* msg = sv_newmortal(); |
3fe9a6f1 | 3314 | SV* name = Nullsv; |
3315 | ||
3316 | if (gv) | |
46fc3d4c | 3317 | gv_efullname3(name = sv_newmortal(), gv, Nullch); |
3318 | sv_setpv(msg, "Prototype mismatch:"); | |
3319 | if (name) | |
fc36a67e | 3320 | sv_catpvf(msg, " sub %_", name); |
3fe9a6f1 | 3321 | if (SvPOK(cv)) |
46fc3d4c | 3322 | sv_catpvf(msg, " (%s)", SvPVX(cv)); |
3323 | sv_catpv(msg, " vs "); | |
3324 | if (p) | |
3325 | sv_catpvf(msg, "(%s)", p); | |
3326 | else | |
3327 | sv_catpv(msg, "none"); | |
fc36a67e | 3328 | warn("%_", msg); |
3fe9a6f1 | 3329 | } |
3330 | } | |
3331 | ||
760ac839 | 3332 | SV * |
8ac85365 | 3333 | cv_const_sv(CV *cv) |
760ac839 | 3334 | { |
54310121 | 3335 | if (!cv || !SvPOK(cv) || SvCUR(cv)) |
3336 | return Nullsv; | |
fe5e78ed GS |
3337 | return op_const_sv(CvSTART(cv), cv); |
3338 | } | |
760ac839 | 3339 | |
fe5e78ed GS |
3340 | SV * |
3341 | op_const_sv(OP *o, CV *cv) | |
3342 | { | |
3343 | SV *sv = Nullsv; | |
3344 | ||
3345 | if(!o) | |
3346 | return Nullsv; | |
3347 | ||
3348 | if(o->op_type == OP_LINESEQ && cLISTOPo->op_first) | |
3349 | o = cLISTOPo->op_first->op_sibling; | |
3350 | ||
3351 | for (; o; o = o->op_next) { | |
54310121 | 3352 | OPCODE type = o->op_type; |
fe5e78ed GS |
3353 | |
3354 | if(sv && o->op_next == o) | |
3355 | return sv; | |
54310121 | 3356 | if (type == OP_NEXTSTATE || type == OP_NULL || type == OP_PUSHMARK) |
3357 | continue; | |
3358 | if (type == OP_LEAVESUB || type == OP_RETURN) | |
3359 | break; | |
3360 | if (sv) | |
3361 | return Nullsv; | |
3362 | if (type == OP_CONST) | |
5dc0d613 | 3363 | sv = cSVOPo->op_sv; |
fe5e78ed | 3364 | else if (type == OP_PADSV && cv) { |
e858de61 MB |
3365 | AV* padav = (AV*)(AvARRAY(CvPADLIST(cv))[1]); |
3366 | sv = padav ? AvARRAY(padav)[o->op_targ] : Nullsv; | |
5aabfad6 | 3367 | if (!sv || (!SvREADONLY(sv) && SvREFCNT(sv) > 1)) |
54310121 | 3368 | return Nullsv; |
760ac839 | 3369 | } |
54310121 | 3370 | else |
3371 | return Nullsv; | |
760ac839 | 3372 | } |
5aabfad6 | 3373 | if (sv) |
3374 | SvREADONLY_on(sv); | |
760ac839 LW |
3375 | return sv; |
3376 | } | |
3377 | ||
748a9306 | 3378 | CV * |
8ac85365 | 3379 | newSUB(I32 floor, OP *o, OP *proto, OP *block) |
79072805 | 3380 | { |
11343788 | 3381 | dTHR; |
5dc0d613 | 3382 | char *name = o ? SvPVx(cSVOPo->op_sv, na) : Nullch; |
55d729e4 GS |
3383 | GV *gv = gv_fetchpv(name ? name : "__ANON__", |
3384 | GV_ADDMULTI | (block ? 0 : GV_NOINIT), SVt_PVCV); | |
3fe9a6f1 | 3385 | char *ps = proto ? SvPVx(((SVOP*)proto)->op_sv, na) : Nullch; |
79072805 | 3386 | register CV *cv; |
a0d0e21e | 3387 | I32 ix; |
79072805 | 3388 | |
11343788 | 3389 | if (o) |
5dc0d613 | 3390 | SAVEFREEOP(o); |
3fe9a6f1 | 3391 | if (proto) |
3392 | SAVEFREEOP(proto); | |
3393 | ||
55d729e4 GS |
3394 | if (SvTYPE(gv) != SVt_PVGV) { /* Prototype now, and had |
3395 | maximum a prototype before. */ | |
3396 | if (SvTYPE(gv) > SVt_NULL) { | |
3397 | if (!SvPOK((SV*)gv) && !(SvIOK((SV*)gv) && SvIVX((SV*)gv) == -1)) | |
3398 | warn("Runaway prototype"); | |
3399 | cv_ckproto((CV*)gv, NULL, ps); | |
3400 | } | |
3401 | if (ps) | |
3402 | sv_setpv((SV*)gv, ps); | |
3403 | else | |
3404 | sv_setiv((SV*)gv, -1); | |
3405 | SvREFCNT_dec(compcv); | |
57ff9a15 | 3406 | cv = compcv = NULL; |
55d729e4 GS |
3407 | sub_generation++; |
3408 | goto noblock; | |
3409 | } | |
3410 | ||
68dc0745 | 3411 | if (!name || GvCVGEN(gv)) |
3412 | cv = Nullcv; | |
3413 | else if (cv = GvCV(gv)) { | |
3fe9a6f1 | 3414 | cv_ckproto(cv, gv, ps); |
68dc0745 | 3415 | /* already defined (or promised)? */ |
3416 | if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
3417 | SV* const_sv; | |
fe5e78ed | 3418 | bool const_changed = TRUE; |
aa689395 | 3419 | if (!block) { |
3420 | /* just a "sub foo;" when &foo is already defined */ | |
3421 | SAVEFREESV(compcv); | |
3422 | goto done; | |
3423 | } | |
7bac28a0 | 3424 | /* ahem, death to those who redefine active sort subs */ |
e336de0d | 3425 | if (curstackinfo->si_type == SI_SORT && sortcop == CvSTART(cv)) |
7bac28a0 | 3426 | croak("Can't redefine active sort subroutine %s", name); |
fe5e78ed GS |
3427 | if(const_sv = cv_const_sv(cv)) |
3428 | const_changed = sv_cmp(const_sv, op_const_sv(block, Nullcv)); | |
3429 | if ((const_sv && const_changed) || dowarn && !(CvGV(cv) && GvSTASH(CvGV(cv)) | |
2f34f9d4 IZ |
3430 | && HvNAME(GvSTASH(CvGV(cv))) |
3431 | && strEQ(HvNAME(GvSTASH(CvGV(cv))), | |
3432 | "autouse"))) { | |
79072805 | 3433 | line_t oldline = curcop->cop_line; |
79072805 | 3434 | curcop->cop_line = copline; |
760ac839 | 3435 | warn(const_sv ? "Constant subroutine %s redefined" |
68dc0745 | 3436 | : "Subroutine %s redefined", name); |
79072805 LW |
3437 | curcop->cop_line = oldline; |
3438 | } | |
8990e307 | 3439 | SvREFCNT_dec(cv); |
68dc0745 | 3440 | cv = Nullcv; |
79072805 LW |
3441 | } |
3442 | } | |
a0d0e21e | 3443 | if (cv) { /* must reuse cv if autoloaded */ |
4633a7c4 | 3444 | cv_undef(cv); |
44a8e56a | 3445 | CvFLAGS(cv) = CvFLAGS(compcv); |
748a9306 | 3446 | CvOUTSIDE(cv) = CvOUTSIDE(compcv); |
e9a444f0 | 3447 | CvOUTSIDE(compcv) = 0; |
748a9306 | 3448 | CvPADLIST(cv) = CvPADLIST(compcv); |
4aa0a1f7 | 3449 | CvPADLIST(compcv) = 0; |
4633a7c4 LW |
3450 | if (SvREFCNT(compcv) > 1) /* XXX Make closures transit through stub. */ |
3451 | CvOUTSIDE(compcv) = (CV*)SvREFCNT_inc((SV*)cv); | |
748a9306 | 3452 | SvREFCNT_dec(compcv); |
a0d0e21e LW |
3453 | } |
3454 | else { | |
748a9306 | 3455 | cv = compcv; |
44a8e56a | 3456 | if (name) { |
3457 | GvCV(gv) = cv; | |
3458 | GvCVGEN(gv) = 0; | |
3459 | sub_generation++; | |
3460 | } | |
a0d0e21e | 3461 | } |
44a8e56a | 3462 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
79072805 | 3463 | CvFILEGV(cv) = curcop->cop_filegv; |
8990e307 | 3464 | CvSTASH(cv) = curstash; |
11343788 MB |
3465 | #ifdef USE_THREADS |
3466 | CvOWNER(cv) = 0; | |
12ca11f6 | 3467 | New(666, CvMUTEXP(cv), 1, perl_mutex); |
11343788 | 3468 | MUTEX_INIT(CvMUTEXP(cv)); |
11343788 | 3469 | #endif /* USE_THREADS */ |
8990e307 | 3470 | |
3fe9a6f1 | 3471 | if (ps) |
3472 | sv_setpv((SV*)cv, ps); | |
4633a7c4 | 3473 | |
c07a80fd | 3474 | if (error_count) { |
3475 | op_free(block); | |
3476 | block = Nullop; | |
68dc0745 | 3477 | if (name) { |
3478 | char *s = strrchr(name, ':'); | |
3479 | s = s ? s+1 : name; | |
6d4c2119 CS |
3480 | if (strEQ(s, "BEGIN")) { |
3481 | char *not_safe = | |
3482 | "BEGIN not safe after errors--compilation aborted"; | |
3483 | if (in_eval & 4) | |
3484 | croak(not_safe); | |
3485 | else { | |
3486 | /* force display of errors found but not reported */ | |
38a03e6e MB |
3487 | sv_catpv(ERRSV, not_safe); |
3488 | croak("%s", SvPVx(ERRSV, na)); | |
6d4c2119 CS |
3489 | } |
3490 | } | |
68dc0745 | 3491 | } |
c07a80fd | 3492 | } |
a0d0e21e | 3493 | if (!block) { |
55d729e4 | 3494 | noblock: |
a0d0e21e LW |
3495 | copline = NOLINE; |
3496 | LEAVE_SCOPE(floor); | |
3497 | return cv; | |
3498 | } | |
3499 | ||
93965878 NIS |
3500 | if (AvFILLp(comppad_name) < AvFILLp(comppad)) |
3501 | av_store(comppad_name, AvFILLp(comppad), Nullsv); | |
a0d0e21e | 3502 | |
54310121 | 3503 | if (CvCLONE(cv)) { |
3504 | SV **namep = AvARRAY(comppad_name); | |
93965878 | 3505 | for (ix = AvFILLp(comppad); ix > 0; ix--) { |
54310121 | 3506 | SV *namesv; |
3507 | ||
3508 | if (SvIMMORTAL(curpad[ix])) | |
3509 | continue; | |
3510 | /* | |
3511 | * The only things that a clonable function needs in its | |
3512 | * pad are references to outer lexicals and anonymous subs. | |
3513 | * The rest are created anew during cloning. | |
3514 | */ | |
3515 | if (!((namesv = namep[ix]) != Nullsv && | |
3516 | namesv != &sv_undef && | |
3517 | (SvFAKE(namesv) || | |
3518 | *SvPVX(namesv) == '&'))) | |
3519 | { | |
3520 | SvREFCNT_dec(curpad[ix]); | |
3521 | curpad[ix] = Nullsv; | |
3522 | } | |
3523 | } | |
a0d0e21e | 3524 | } |
54310121 | 3525 | else { |
3526 | AV *av = newAV(); /* Will be @_ */ | |
3527 | av_extend(av, 0); | |
3528 | av_store(comppad, 0, (SV*)av); | |
3529 | AvFLAGS(av) = AVf_REIFY; | |
79072805 | 3530 | |
93965878 | 3531 | for (ix = AvFILLp(comppad); ix > 0; ix--) { |
54310121 | 3532 | if (SvIMMORTAL(curpad[ix])) |
3533 | continue; | |
3534 | if (!SvPADMY(curpad[ix])) | |
3535 | SvPADTMP_on(curpad[ix]); | |
3536 | } | |
3537 | } | |
79072805 | 3538 | |
a0d0e21e | 3539 | CvROOT(cv) = newUNOP(OP_LEAVESUB, 0, scalarseq(block)); |
79072805 LW |
3540 | CvSTART(cv) = LINKLIST(CvROOT(cv)); |
3541 | CvROOT(cv)->op_next = 0; | |
3542 | peep(CvSTART(cv)); | |
93a17b20 | 3543 | |
44a8e56a | 3544 | if (name) { |
3545 | char *s; | |
3546 | ||
84902520 | 3547 | if (PERLDB_SUBLINE && curstash != debstash) { |
46fc3d4c | 3548 | SV *sv = NEWSV(0,0); |
44a8e56a | 3549 | SV *tmpstr = sv_newmortal(); |
549bb64a | 3550 | GV *db_postponed = gv_fetchpv("DB::postponed", GV_ADDMULTI, SVt_PVHV); |
44a8e56a | 3551 | CV *cv; |
3552 | HV *hv; | |
3553 | ||
51790459 MB |
3554 | sv_setpvf(sv, "%_:%ld-%ld", |
3555 | GvSV(curcop->cop_filegv), | |
3556 | (long)subline, (long)curcop->cop_line); | |
44a8e56a | 3557 | gv_efullname3(tmpstr, gv, Nullch); |
3558 | hv_store(GvHV(DBsub), SvPVX(tmpstr), SvCUR(tmpstr), sv, 0); | |
44a8e56a | 3559 | hv = GvHVn(db_postponed); |
9607fc9c | 3560 | if (HvFILL(hv) > 0 && hv_exists(hv, SvPVX(tmpstr), SvCUR(tmpstr)) |
3561 | && (cv = GvCV(db_postponed))) { | |
44a8e56a | 3562 | dSP; |
924508f0 | 3563 | PUSHMARK(SP); |
44a8e56a | 3564 | XPUSHs(tmpstr); |
3565 | PUTBACK; | |
3566 | perl_call_sv((SV*)cv, G_DISCARD); | |
3567 | } | |
3568 | } | |
79072805 | 3569 | |
44a8e56a | 3570 | if ((s = strrchr(name,':'))) |
28757baa | 3571 | s++; |
3572 | else | |
3573 | s = name; | |
68dc0745 | 3574 | if (strEQ(s, "BEGIN")) { |
2ae324a7 | 3575 | I32 oldscope = scopestack_ix; |
28757baa | 3576 | ENTER; |
3577 | SAVESPTR(compiling.cop_filegv); | |
3578 | SAVEI16(compiling.cop_line); | |
28757baa | 3579 | save_svref(&rs); |
3580 | sv_setsv(rs, nrs); | |
3581 | ||
3582 | if (!beginav) | |
3583 | beginav = newAV(); | |
3584 | DEBUG_x( dump_sub(gv) ); | |
3585 | av_push(beginav, (SV *)cv); | |
3586 | GvCV(gv) = 0; | |
68dc0745 | 3587 | call_list(oldscope, beginav); |
a6006777 | 3588 | |
28757baa | 3589 | curcop = &compiling; |
3590 | LEAVE; | |
3591 | } | |
3592 | else if (strEQ(s, "END") && !error_count) { | |
3593 | if (!endav) | |
3594 | endav = newAV(); | |
3595 | av_unshift(endav, 1); | |
3596 | av_store(endav, 0, (SV *)cv); | |
3597 | GvCV(gv) = 0; | |
3598 | } | |
7d07dbc2 MB |
3599 | else if (strEQ(s, "INIT") && !error_count) { |
3600 | if (!initav) | |
3601 | initav = newAV(); | |
3602 | av_push(initav, SvREFCNT_inc(cv)); | |
ae77835f | 3603 | } |
79072805 | 3604 | } |
a6006777 | 3605 | |
aa689395 | 3606 | done: |
79072805 | 3607 | copline = NOLINE; |
8990e307 | 3608 | LEAVE_SCOPE(floor); |
a0d0e21e | 3609 | return cv; |
79072805 LW |
3610 | } |
3611 | ||
5476c433 JD |
3612 | void |
3613 | newCONSTSUB(HV *stash, char *name, SV *sv) | |
3614 | { | |
3615 | dTHR; | |
3616 | U32 oldhints = hints; | |
3617 | HV *old_cop_stash = curcop->cop_stash; | |
3618 | HV *old_curstash = curstash; | |
3619 | line_t oldline = curcop->cop_line; | |
3620 | curcop->cop_line = copline; | |
3621 | ||
3622 | hints &= ~HINT_BLOCK_SCOPE; | |
3623 | if(stash) | |
3624 | curstash = curcop->cop_stash = stash; | |
3625 | ||
3626 | newSUB( | |
be24f278 | 3627 | start_subparse(FALSE, 0), |
5476c433 JD |
3628 | newSVOP(OP_CONST, 0, newSVpv(name,0)), |
3629 | newSVOP(OP_CONST, 0, &sv_no), /* SvPV(&sv_no) == "" -- GMB */ | |
3630 | newSTATEOP(0, Nullch, newSVOP(OP_CONST, 0, sv)) | |
3631 | ); | |
3632 | ||
3633 | hints = oldhints; | |
3634 | curcop->cop_stash = old_cop_stash; | |
3635 | curstash = old_curstash; | |
3636 | curcop->cop_line = oldline; | |
3637 | } | |
3638 | ||
57d3b86d | 3639 | CV * |
e3b8966e | 3640 | newXS(char *name, void (*subaddr) (CV * _CPERLproto), char *filename) |
a0d0e21e | 3641 | { |
11343788 | 3642 | dTHR; |
44a8e56a | 3643 | GV *gv = gv_fetchpv(name ? name : "__ANON__", GV_ADDMULTI, SVt_PVCV); |
79072805 | 3644 | register CV *cv; |
44a8e56a | 3645 | |
3646 | if (cv = (name ? GvCV(gv) : Nullcv)) { | |
3647 | if (GvCVGEN(gv)) { | |
3648 | /* just a cached method */ | |
3649 | SvREFCNT_dec(cv); | |
3650 | cv = 0; | |
3651 | } | |
3652 | else if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
3653 | /* already defined (or promised) */ | |
2f34f9d4 IZ |
3654 | if (dowarn && !(CvGV(cv) && GvSTASH(CvGV(cv)) |
3655 | && HvNAME(GvSTASH(CvGV(cv))) | |
3656 | && strEQ(HvNAME(GvSTASH(CvGV(cv))), "autouse"))) { | |
a0d0e21e | 3657 | line_t oldline = curcop->cop_line; |
a0d0e21e LW |
3658 | curcop->cop_line = copline; |
3659 | warn("Subroutine %s redefined",name); | |
3660 | curcop->cop_line = oldline; | |
3661 | } | |
3662 | SvREFCNT_dec(cv); | |
3663 | cv = 0; | |
79072805 | 3664 | } |
79072805 | 3665 | } |
44a8e56a | 3666 | |
3667 | if (cv) /* must reuse cv if autoloaded */ | |
3668 | cv_undef(cv); | |
a0d0e21e LW |
3669 | else { |
3670 | cv = (CV*)NEWSV(1105,0); | |
3671 | sv_upgrade((SV *)cv, SVt_PVCV); | |
44a8e56a | 3672 | if (name) { |
3673 | GvCV(gv) = cv; | |
3674 | GvCVGEN(gv) = 0; | |
3675 | sub_generation++; | |
3676 | } | |
a0d0e21e | 3677 | } |
5196be3e | 3678 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
11343788 | 3679 | #ifdef USE_THREADS |
12ca11f6 | 3680 | New(666, CvMUTEXP(cv), 1, perl_mutex); |
11343788 | 3681 | MUTEX_INIT(CvMUTEXP(cv)); |
11343788 MB |
3682 | CvOWNER(cv) = 0; |
3683 | #endif /* USE_THREADS */ | |
79072805 | 3684 | CvFILEGV(cv) = gv_fetchfile(filename); |
a0d0e21e | 3685 | CvXSUB(cv) = subaddr; |
44a8e56a | 3686 | |
28757baa | 3687 | if (name) { |
3688 | char *s = strrchr(name,':'); | |
3689 | if (s) | |
3690 | s++; | |
3691 | else | |
3692 | s = name; | |
3693 | if (strEQ(s, "BEGIN")) { | |
3694 | if (!beginav) | |
3695 | beginav = newAV(); | |
44a8e56a | 3696 | av_push(beginav, (SV *)cv); |
3697 | GvCV(gv) = 0; | |
28757baa | 3698 | } |
3699 | else if (strEQ(s, "END")) { | |
3700 | if (!endav) | |
3701 | endav = newAV(); | |
3702 | av_unshift(endav, 1); | |
44a8e56a | 3703 | av_store(endav, 0, (SV *)cv); |
3704 | GvCV(gv) = 0; | |
28757baa | 3705 | } |
7d07dbc2 MB |
3706 | else if (strEQ(s, "INIT")) { |
3707 | if (!initav) | |
3708 | initav = newAV(); | |
3709 | av_push(initav, (SV *)cv); | |
ae77835f | 3710 | } |
28757baa | 3711 | } |
8990e307 | 3712 | else |
a5f75d66 | 3713 | CvANON_on(cv); |
44a8e56a | 3714 | |
a0d0e21e | 3715 | return cv; |
79072805 LW |
3716 | } |
3717 | ||
3718 | void | |
8ac85365 | 3719 | newFORM(I32 floor, OP *o, OP *block) |
79072805 | 3720 | { |
11343788 | 3721 | dTHR; |
79072805 LW |
3722 | register CV *cv; |
3723 | char *name; | |
3724 | GV *gv; | |
a0d0e21e | 3725 | I32 ix; |
79072805 | 3726 | |
11343788 MB |
3727 | if (o) |
3728 | name = SvPVx(cSVOPo->op_sv, na); | |
79072805 LW |
3729 | else |
3730 | name = "STDOUT"; | |
85e6fe83 | 3731 | gv = gv_fetchpv(name,TRUE, SVt_PVFM); |
a5f75d66 | 3732 | GvMULTI_on(gv); |
79072805 LW |
3733 | if (cv = GvFORM(gv)) { |
3734 | if (dowarn) { | |
3735 | line_t oldline = curcop->cop_line; | |
3736 | ||
3737 | curcop->cop_line = copline; | |
3738 | warn("Format %s redefined",name); | |
3739 | curcop->cop_line = oldline; | |
3740 | } | |
8990e307 | 3741 | SvREFCNT_dec(cv); |
79072805 | 3742 | } |
748a9306 | 3743 | cv = compcv; |
79072805 | 3744 | GvFORM(gv) = cv; |
44a8e56a | 3745 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
79072805 LW |
3746 | CvFILEGV(cv) = curcop->cop_filegv; |
3747 | ||
93965878 | 3748 | for (ix = AvFILLp(comppad); ix > 0; ix--) { |
44a8e56a | 3749 | if (!SvPADMY(curpad[ix]) && !SvIMMORTAL(curpad[ix])) |
a0d0e21e LW |
3750 | SvPADTMP_on(curpad[ix]); |
3751 | } | |
3752 | ||
79072805 LW |
3753 | CvROOT(cv) = newUNOP(OP_LEAVEWRITE, 0, scalarseq(block)); |
3754 | CvSTART(cv) = LINKLIST(CvROOT(cv)); | |
3755 | CvROOT(cv)->op_next = 0; | |
3756 | peep(CvSTART(cv)); | |
11343788 | 3757 | op_free(o); |
79072805 | 3758 | copline = NOLINE; |
8990e307 | 3759 | LEAVE_SCOPE(floor); |
79072805 LW |
3760 | } |
3761 | ||
3762 | OP * | |
8ac85365 | 3763 | newANONLIST(OP *o) |
79072805 | 3764 | { |
93a17b20 | 3765 | return newUNOP(OP_REFGEN, 0, |
11343788 | 3766 | mod(list(convert(OP_ANONLIST, 0, o)), OP_REFGEN)); |
79072805 LW |
3767 | } |
3768 | ||
3769 | OP * | |
8ac85365 | 3770 | newANONHASH(OP *o) |
79072805 | 3771 | { |
93a17b20 | 3772 | return newUNOP(OP_REFGEN, 0, |
11343788 | 3773 | mod(list(convert(OP_ANONHASH, 0, o)), OP_REFGEN)); |
a0d0e21e LW |
3774 | } |
3775 | ||
3776 | OP * | |
8ac85365 | 3777 | newANONSUB(I32 floor, OP *proto, OP *block) |
a0d0e21e LW |
3778 | { |
3779 | return newUNOP(OP_REFGEN, 0, | |
4633a7c4 | 3780 | newSVOP(OP_ANONCODE, 0, (SV*)newSUB(floor, 0, proto, block))); |
79072805 LW |
3781 | } |
3782 | ||
3783 | OP * | |
8ac85365 | 3784 | oopsAV(OP *o) |
79072805 | 3785 | { |
ed6116ce LW |
3786 | switch (o->op_type) { |
3787 | case OP_PADSV: | |
3788 | o->op_type = OP_PADAV; | |
3789 | o->op_ppaddr = ppaddr[OP_PADAV]; | |
3790 | return ref(newUNOP(OP_RV2AV, 0, scalar(o)), OP_RV2AV); | |
3791 | ||
3792 | case OP_RV2SV: | |
79072805 LW |
3793 | o->op_type = OP_RV2AV; |
3794 | o->op_ppaddr = ppaddr[OP_RV2AV]; | |
3795 | ref(o, OP_RV2AV); | |
ed6116ce LW |
3796 | break; |
3797 | ||
3798 | default: | |
79072805 | 3799 | warn("oops: oopsAV"); |
ed6116ce LW |
3800 | break; |
3801 | } | |
79072805 LW |
3802 | return o; |
3803 | } | |
3804 | ||
3805 | OP * | |
8ac85365 | 3806 | oopsHV(OP *o) |
79072805 | 3807 | { |
ed6116ce LW |
3808 | switch (o->op_type) { |
3809 | case OP_PADSV: | |
3810 | case OP_PADAV: | |
3811 | o->op_type = OP_PADHV; | |
3812 | o->op_ppaddr = ppaddr[OP_PADHV]; | |
3813 | return ref(newUNOP(OP_RV2HV, 0, scalar(o)), OP_RV2HV); | |
3814 | ||
3815 | case OP_RV2SV: | |
3816 | case OP_RV2AV: | |
79072805 LW |
3817 | o->op_type = OP_RV2HV; |
3818 | o->op_ppaddr = ppaddr[OP_RV2HV]; | |
3819 | ref(o, OP_RV2HV); | |
ed6116ce LW |
3820 | break; |
3821 | ||
3822 | default: | |
79072805 | 3823 | warn("oops: oopsHV"); |
ed6116ce LW |
3824 | break; |
3825 | } | |
79072805 LW |
3826 | return o; |
3827 | } | |
3828 | ||
3829 | OP * | |
8ac85365 | 3830 | newAVREF(OP *o) |
79072805 | 3831 | { |
ed6116ce LW |
3832 | if (o->op_type == OP_PADANY) { |
3833 | o->op_type = OP_PADAV; | |
3834 | o->op_ppaddr = ppaddr[OP_PADAV]; | |
93a17b20 | 3835 | return o; |
ed6116ce | 3836 | } |
79072805 LW |
3837 | return newUNOP(OP_RV2AV, 0, scalar(o)); |
3838 | } | |
3839 | ||
3840 | OP * | |
8ac85365 | 3841 | newGVREF(I32 type, OP *o) |
79072805 | 3842 | { |
a0d0e21e LW |
3843 | if (type == OP_MAPSTART) |
3844 | return newUNOP(OP_NULL, 0, o); | |
748a9306 | 3845 | return ref(newUNOP(OP_RV2GV, OPf_REF, o), type); |
79072805 LW |
3846 | } |
3847 | ||
3848 | OP * | |
8ac85365 | 3849 | newHVREF(OP *o) |
79072805 | 3850 | { |
ed6116ce LW |
3851 | if (o->op_type == OP_PADANY) { |
3852 | o->op_type = OP_PADHV; | |
3853 | o->op_ppaddr = ppaddr[OP_PADHV]; | |
93a17b20 | 3854 | return o; |
ed6116ce | 3855 | } |
79072805 LW |
3856 | return newUNOP(OP_RV2HV, 0, scalar(o)); |
3857 | } | |
3858 | ||
3859 | OP * | |
8ac85365 | 3860 | oopsCV(OP *o) |
79072805 | 3861 | { |
463ee0b2 | 3862 | croak("NOT IMPL LINE %d",__LINE__); |
79072805 LW |
3863 | /* STUB */ |
3864 | return o; | |
3865 | } | |
3866 | ||
3867 | OP * | |
8ac85365 | 3868 | newCVREF(I32 flags, OP *o) |
79072805 | 3869 | { |
c07a80fd | 3870 | return newUNOP(OP_RV2CV, flags, scalar(o)); |
79072805 LW |
3871 | } |
3872 | ||
3873 | OP * | |
8ac85365 | 3874 | newSVREF(OP *o) |
79072805 | 3875 | { |
ed6116ce LW |
3876 | if (o->op_type == OP_PADANY) { |
3877 | o->op_type = OP_PADSV; | |
3878 | o->op_ppaddr = ppaddr[OP_PADSV]; | |
93a17b20 | 3879 | return o; |
ed6116ce | 3880 | } |
224a4551 MB |
3881 | else if (o->op_type == OP_THREADSV && !(o->op_flags & OPpDONE_SVREF)) { |
3882 | o->op_flags |= OPpDONE_SVREF; | |
a863c7d1 | 3883 | return o; |
224a4551 | 3884 | } |
79072805 LW |
3885 | return newUNOP(OP_RV2SV, 0, scalar(o)); |
3886 | } | |
3887 | ||
3888 | /* Check routines. */ | |
3889 | ||
3890 | OP * | |
8ac85365 | 3891 | ck_anoncode(OP *o) |
5f05dabc | 3892 | { |
178c6305 CS |
3893 | PADOFFSET ix; |
3894 | SV* name; | |
3895 | ||
3896 | name = NEWSV(1106,0); | |
3897 | sv_upgrade(name, SVt_PVNV); | |
3898 | sv_setpvn(name, "&", 1); | |
3899 | SvIVX(name) = -1; | |
3900 | SvNVX(name) = 1; | |
5dc0d613 | 3901 | ix = pad_alloc(o->op_type, SVs_PADMY); |
178c6305 | 3902 | av_store(comppad_name, ix, name); |
5dc0d613 MB |
3903 | av_store(comppad, ix, cSVOPo->op_sv); |
3904 | SvPADMY_on(cSVOPo->op_sv); | |
3905 | cSVOPo->op_sv = Nullsv; | |
3906 | cSVOPo->op_targ = ix; | |
3907 | return o; | |
5f05dabc | 3908 | } |
3909 | ||
3910 | OP * | |
8ac85365 | 3911 | ck_bitop(OP *o) |
55497cff | 3912 | { |
5dc0d613 MB |
3913 | o->op_private = hints; |
3914 | return o; | |
55497cff | 3915 | } |
3916 | ||
3917 | OP * | |
8ac85365 | 3918 | ck_concat(OP *o) |
79072805 | 3919 | { |
11343788 MB |
3920 | if (cUNOPo->op_first->op_type == OP_CONCAT) |
3921 | o->op_flags |= OPf_STACKED; | |
3922 | return o; | |
79072805 LW |
3923 | } |
3924 | ||
3925 | OP * | |
8ac85365 | 3926 | ck_spair(OP *o) |
79072805 | 3927 | { |
11343788 | 3928 | if (o->op_flags & OPf_KIDS) { |
79072805 | 3929 | OP* newop; |
a0d0e21e | 3930 | OP* kid; |
5dc0d613 MB |
3931 | OPCODE type = o->op_type; |
3932 | o = modkids(ck_fun(o), type); | |
11343788 | 3933 | kid = cUNOPo->op_first; |
a0d0e21e LW |
3934 | newop = kUNOP->op_first->op_sibling; |
3935 | if (newop && | |
3936 | (newop->op_sibling || | |
3937 | !(opargs[newop->op_type] & OA_RETSCALAR) || | |
3938 | newop->op_type == OP_PADAV || newop->op_type == OP_PADHV || | |
3939 | newop->op_type == OP_RV2AV || newop->op_type == OP_RV2HV)) { | |
aeea060c | 3940 | |
11343788 | 3941 | return o; |
a0d0e21e LW |
3942 | } |
3943 | op_free(kUNOP->op_first); | |
3944 | kUNOP->op_first = newop; | |
3945 | } | |
11343788 MB |
3946 | o->op_ppaddr = ppaddr[++o->op_type]; |
3947 | return ck_fun(o); | |
a0d0e21e LW |
3948 | } |
3949 | ||
3950 | OP * | |
8ac85365 | 3951 | ck_delete(OP *o) |
a0d0e21e | 3952 | { |
11343788 | 3953 | o = ck_fun(o); |
5dc0d613 | 3954 | o->op_private = 0; |
11343788 MB |
3955 | if (o->op_flags & OPf_KIDS) { |
3956 | OP *kid = cUNOPo->op_first; | |
5f05dabc | 3957 | if (kid->op_type == OP_HSLICE) |
5dc0d613 | 3958 | o->op_private |= OPpSLICE; |
5f05dabc | 3959 | else if (kid->op_type != OP_HELEM) |
3960 | croak("%s argument is not a HASH element or slice", | |
5dc0d613 | 3961 | op_desc[o->op_type]); |
a0d0e21e | 3962 | null(kid); |
79072805 | 3963 | } |
11343788 | 3964 | return o; |
79072805 LW |
3965 | } |
3966 | ||
3967 | OP * | |
8ac85365 | 3968 | ck_eof(OP *o) |
79072805 | 3969 | { |
11343788 | 3970 | I32 type = o->op_type; |
79072805 | 3971 | |
11343788 MB |
3972 | if (o->op_flags & OPf_KIDS) { |
3973 | if (cLISTOPo->op_first->op_type == OP_STUB) { | |
3974 | op_free(o); | |
3975 | o = newUNOP(type, OPf_SPECIAL, | |
d58bf5aa | 3976 | newGVOP(OP_GV, 0, gv_fetchpv("main::ARGV", TRUE, SVt_PVAV))); |
8990e307 | 3977 | } |
11343788 | 3978 | return ck_fun(o); |
79072805 | 3979 | } |
11343788 | 3980 | return o; |
79072805 LW |
3981 | } |
3982 | ||
3983 | OP * | |
8ac85365 | 3984 | ck_eval(OP *o) |
79072805 | 3985 | { |
85e6fe83 | 3986 | hints |= HINT_BLOCK_SCOPE; |
11343788 MB |
3987 | if (o->op_flags & OPf_KIDS) { |
3988 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 | 3989 | |
93a17b20 | 3990 | if (!kid) { |
11343788 MB |
3991 | o->op_flags &= ~OPf_KIDS; |
3992 | null(o); | |
79072805 LW |
3993 | } |
3994 | else if (kid->op_type == OP_LINESEQ) { | |
3995 | LOGOP *enter; | |
3996 | ||
11343788 MB |
3997 | kid->op_next = o->op_next; |
3998 | cUNOPo->op_first = 0; | |
3999 | op_free(o); | |
79072805 LW |
4000 | |
4001 | Newz(1101, enter, 1, LOGOP); | |
4002 | enter->op_type = OP_ENTERTRY; | |
4003 | enter->op_ppaddr = ppaddr[OP_ENTERTRY]; | |
4004 | enter->op_private = 0; | |
4005 | ||
4006 | /* establish postfix order */ | |
4007 | enter->op_next = (OP*)enter; | |
4008 | ||
11343788 MB |
4009 | o = prepend_elem(OP_LINESEQ, (OP*)enter, (OP*)kid); |
4010 | o->op_type = OP_LEAVETRY; | |
4011 | o->op_ppaddr = ppaddr[OP_LEAVETRY]; | |
4012 | enter->op_other = o; | |
4013 | return o; | |
79072805 | 4014 | } |
c7cc6f1c | 4015 | else |
473986ff | 4016 | scalar((OP*)kid); |
79072805 LW |
4017 | } |
4018 | else { | |
11343788 | 4019 | op_free(o); |
54b9620d | 4020 | o = newUNOP(OP_ENTEREVAL, 0, newDEFSVOP()); |
79072805 | 4021 | } |
11343788 MB |
4022 | o->op_targ = (PADOFFSET)hints; |
4023 | return o; | |
79072805 LW |
4024 | } |
4025 | ||
4026 | OP * | |
8ac85365 | 4027 | ck_exec(OP *o) |
79072805 LW |
4028 | { |
4029 | OP *kid; | |
11343788 MB |
4030 | if (o->op_flags & OPf_STACKED) { |
4031 | o = ck_fun(o); | |
4032 | kid = cUNOPo->op_first->op_sibling; | |
8990e307 LW |
4033 | if (kid->op_type == OP_RV2GV) |
4034 | null(kid); | |
79072805 | 4035 | } |
463ee0b2 | 4036 | else |
11343788 MB |
4037 | o = listkids(o); |
4038 | return o; | |
79072805 LW |
4039 | } |
4040 | ||
4041 | OP * | |
8ac85365 | 4042 | ck_exists(OP *o) |
5f05dabc | 4043 | { |
5196be3e MB |
4044 | o = ck_fun(o); |
4045 | if (o->op_flags & OPf_KIDS) { | |
4046 | OP *kid = cUNOPo->op_first; | |
5f05dabc | 4047 | if (kid->op_type != OP_HELEM) |
5196be3e | 4048 | croak("%s argument is not a HASH element", op_desc[o->op_type]); |
5f05dabc | 4049 | null(kid); |
4050 | } | |
5196be3e | 4051 | return o; |
5f05dabc | 4052 | } |
4053 | ||
4054 | OP * | |
8ac85365 | 4055 | ck_gvconst(register OP *o) |
79072805 LW |
4056 | { |
4057 | o = fold_constants(o); | |
4058 | if (o->op_type == OP_CONST) | |
4059 | o->op_type = OP_GV; | |
4060 | return o; | |
4061 | } | |
4062 | ||
4063 | OP * | |
8ac85365 | 4064 | ck_rvconst(register OP *o) |
79072805 | 4065 | { |
11343788 MB |
4066 | dTHR; |
4067 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
85e6fe83 | 4068 | |
11343788 | 4069 | o->op_private |= (hints & HINT_STRICT_REFS); |
79072805 | 4070 | if (kid->op_type == OP_CONST) { |
44a8e56a | 4071 | char *name; |
4072 | int iscv; | |
4073 | GV *gv; | |
4074 | ||
4075 | name = SvPV(kid->op_sv, na); | |
4076 | if ((hints & HINT_STRICT_REFS) && (kid->op_private & OPpCONST_BARE)) { | |
4077 | char *badthing = Nullch; | |
5dc0d613 | 4078 | switch (o->op_type) { |
44a8e56a | 4079 | case OP_RV2SV: |
4080 | badthing = "a SCALAR"; | |
4081 | break; | |
4082 | case OP_RV2AV: | |
4083 | badthing = "an ARRAY"; | |
4084 | break; | |
4085 | case OP_RV2HV: | |
4086 | badthing = "a HASH"; | |
4087 | break; | |
4088 | } | |
4089 | if (badthing) | |
4090 | croak( | |
4091 | "Can't use bareword (\"%s\") as %s ref while \"strict refs\" in use", | |
4092 | name, badthing); | |
4093 | } | |
93233ece CS |
4094 | /* |
4095 | * This is a little tricky. We only want to add the symbol if we | |
4096 | * didn't add it in the lexer. Otherwise we get duplicate strict | |
4097 | * warnings. But if we didn't add it in the lexer, we must at | |
4098 | * least pretend like we wanted to add it even if it existed before, | |
4099 | * or we get possible typo warnings. OPpCONST_ENTERED says | |
4100 | * whether the lexer already added THIS instance of this symbol. | |
4101 | */ | |
5196be3e | 4102 | iscv = (o->op_type == OP_RV2CV) * 2; |
93233ece | 4103 | do { |
44a8e56a | 4104 | gv = gv_fetchpv(name, |
748a9306 | 4105 | iscv | !(kid->op_private & OPpCONST_ENTERED), |
a0d0e21e LW |
4106 | iscv |
4107 | ? SVt_PVCV | |
11343788 | 4108 | : o->op_type == OP_RV2SV |
a0d0e21e | 4109 | ? SVt_PV |
11343788 | 4110 | : o->op_type == OP_RV2AV |
a0d0e21e | 4111 | ? SVt_PVAV |
11343788 | 4112 | : o->op_type == OP_RV2HV |
a0d0e21e LW |
4113 | ? SVt_PVHV |
4114 | : SVt_PVGV); | |
93233ece CS |
4115 | } while (!gv && !(kid->op_private & OPpCONST_ENTERED) && !iscv++); |
4116 | if (gv) { | |
4117 | kid->op_type = OP_GV; | |
4118 | SvREFCNT_dec(kid->op_sv); | |
4119 | kid->op_sv = SvREFCNT_inc(gv); | |
a0d0e21e | 4120 | } |
79072805 | 4121 | } |
11343788 | 4122 | return o; |
79072805 LW |
4123 | } |
4124 | ||
4125 | OP * | |
8ac85365 | 4126 | ck_ftst(OP *o) |
79072805 | 4127 | { |
11343788 MB |
4128 | dTHR; |
4129 | I32 type = o->op_type; | |
79072805 | 4130 | |
11343788 MB |
4131 | if (o->op_flags & OPf_REF) |
4132 | return o; | |
79072805 | 4133 | |
108ed793 | 4134 | if (o->op_flags & OPf_KIDS && cUNOPo->op_first->op_type != OP_STUB) { |
11343788 | 4135 | SVOP *kid = (SVOP*)cUNOPo->op_first; |
79072805 LW |
4136 | |
4137 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
a0d0e21e | 4138 | OP *newop = newGVOP(type, OPf_REF, |
85e6fe83 | 4139 | gv_fetchpv(SvPVx(kid->op_sv, na), TRUE, SVt_PVIO)); |
11343788 | 4140 | op_free(o); |
79072805 LW |
4141 | return newop; |
4142 | } | |
4143 | } | |
4144 | else { | |
11343788 | 4145 | op_free(o); |
79072805 | 4146 | if (type == OP_FTTTY) |
fb73857a | 4147 | return newGVOP(type, OPf_REF, gv_fetchpv("main::STDIN", TRUE, |
85e6fe83 | 4148 | SVt_PVIO)); |
79072805 | 4149 | else |
54b9620d | 4150 | return newUNOP(type, 0, newDEFSVOP()); |
79072805 | 4151 | } |
11343788 | 4152 | return o; |
79072805 LW |
4153 | } |
4154 | ||
4155 | OP * | |
8ac85365 | 4156 | ck_fun(OP *o) |
79072805 | 4157 | { |
11343788 | 4158 | dTHR; |
79072805 LW |
4159 | register OP *kid; |
4160 | OP **tokid; | |
4161 | OP *sibl; | |
4162 | I32 numargs = 0; | |
11343788 | 4163 | int type = o->op_type; |
a0d0e21e | 4164 | register I32 oa = opargs[type] >> OASHIFT; |
aeea060c | 4165 | |
11343788 | 4166 | if (o->op_flags & OPf_STACKED) { |
79072805 LW |
4167 | if ((oa & OA_OPTIONAL) && (oa >> 4) && !((oa >> 4) & OA_OPTIONAL)) |
4168 | oa &= ~OA_OPTIONAL; | |
4169 | else | |
11343788 | 4170 | return no_fh_allowed(o); |
79072805 LW |
4171 | } |
4172 | ||
11343788 MB |
4173 | if (o->op_flags & OPf_KIDS) { |
4174 | tokid = &cLISTOPo->op_first; | |
4175 | kid = cLISTOPo->op_first; | |
8990e307 LW |
4176 | if (kid->op_type == OP_PUSHMARK || |
4177 | kid->op_type == OP_NULL && kid->op_targ == OP_PUSHMARK) | |
4178 | { | |
79072805 LW |
4179 | tokid = &kid->op_sibling; |
4180 | kid = kid->op_sibling; | |
4181 | } | |
a0d0e21e | 4182 | if (!kid && opargs[type] & OA_DEFGV) |
54b9620d | 4183 | *tokid = kid = newDEFSVOP(); |
79072805 LW |
4184 | |
4185 | while (oa && kid) { | |
4186 | numargs++; | |
4187 | sibl = kid->op_sibling; | |
4188 | switch (oa & 7) { | |
4189 | case OA_SCALAR: | |
4190 | scalar(kid); | |
4191 | break; | |
4192 | case OA_LIST: | |
4193 | if (oa < 16) { | |
4194 | kid = 0; | |
4195 | continue; | |
4196 | } | |
4197 | else | |
4198 | list(kid); | |
4199 | break; | |
4200 | case OA_AVREF: | |
4201 | if (kid->op_type == OP_CONST && | |
4202 | (kid->op_private & OPpCONST_BARE)) { | |
463ee0b2 | 4203 | char *name = SvPVx(((SVOP*)kid)->op_sv, na); |
79072805 | 4204 | OP *newop = newAVREF(newGVOP(OP_GV, 0, |
85e6fe83 | 4205 | gv_fetchpv(name, TRUE, SVt_PVAV) )); |
463ee0b2 | 4206 | if (dowarn) |
ff0cee69 | 4207 | warn("Array @%s missing the @ in argument %ld of %s()", |
4208 | name, (long)numargs, op_desc[type]); | |
79072805 LW |
4209 | op_free(kid); |
4210 | kid = newop; | |
4211 | kid->op_sibling = sibl; | |
4212 | *tokid = kid; | |
4213 | } | |
8990e307 | 4214 | else if (kid->op_type != OP_RV2AV && kid->op_type != OP_PADAV) |
11343788 | 4215 | bad_type(numargs, "array", op_desc[o->op_type], kid); |
a0d0e21e | 4216 | mod(kid, type); |
79072805 LW |
4217 | break; |
4218 | case OA_HVREF: | |
4219 | if (kid->op_type == OP_CONST && | |
4220 | (kid->op_private & OPpCONST_BARE)) { | |
463ee0b2 | 4221 | char *name = SvPVx(((SVOP*)kid)->op_sv, na); |
79072805 | 4222 | OP *newop = newHVREF(newGVOP(OP_GV, 0, |
85e6fe83 | 4223 | gv_fetchpv(name, TRUE, SVt_PVHV) )); |
463ee0b2 | 4224 | if (dowarn) |
ff0cee69 | 4225 | warn("Hash %%%s missing the %% in argument %ld of %s()", |
4226 | name, (long)numargs, op_desc[type]); | |
79072805 LW |
4227 | op_free(kid); |
4228 | kid = newop; | |
4229 | kid->op_sibling = sibl; | |
4230 | *tokid = kid; | |
4231 | } | |
8990e307 | 4232 | else if (kid->op_type != OP_RV2HV && kid->op_type != OP_PADHV) |
11343788 | 4233 | bad_type(numargs, "hash", op_desc[o->op_type], kid); |
a0d0e21e | 4234 | mod(kid, type); |
79072805 LW |
4235 | break; |
4236 | case OA_CVREF: | |
4237 | { | |
a0d0e21e | 4238 | OP *newop = newUNOP(OP_NULL, 0, kid); |
79072805 LW |
4239 | kid->op_sibling = 0; |
4240 | linklist(kid); | |
4241 | newop->op_next = newop; | |
4242 | kid = newop; | |
4243 | kid->op_sibling = sibl; | |
4244 | *tokid = kid; | |
4245 | } | |
4246 | break; | |
4247 | case OA_FILEREF: | |
4248 | if (kid->op_type != OP_GV) { | |
4249 | if (kid->op_type == OP_CONST && | |
4250 | (kid->op_private & OPpCONST_BARE)) { | |
4251 | OP *newop = newGVOP(OP_GV, 0, | |
85e6fe83 LW |
4252 | gv_fetchpv(SvPVx(((SVOP*)kid)->op_sv, na), TRUE, |
4253 | SVt_PVIO) ); | |
79072805 LW |
4254 | op_free(kid); |
4255 | kid = newop; | |
4256 | } | |
4257 | else { | |
4258 | kid->op_sibling = 0; | |
4259 | kid = newUNOP(OP_RV2GV, 0, scalar(kid)); | |
4260 | } | |
4261 | kid->op_sibling = sibl; | |
4262 | *tokid = kid; | |
4263 | } | |
4264 | scalar(kid); | |
4265 | break; | |
4266 | case OA_SCALARREF: | |
a0d0e21e | 4267 | mod(scalar(kid), type); |
79072805 LW |
4268 | break; |
4269 | } | |
4270 | oa >>= 4; | |
4271 | tokid = &kid->op_sibling; | |
4272 | kid = kid->op_sibling; | |
4273 | } | |
11343788 | 4274 | o->op_private |= numargs; |
79072805 | 4275 | if (kid) |
11343788 MB |
4276 | return too_many_arguments(o,op_desc[o->op_type]); |
4277 | listkids(o); | |
79072805 | 4278 | } |
a0d0e21e | 4279 | else if (opargs[type] & OA_DEFGV) { |
11343788 | 4280 | op_free(o); |
54b9620d | 4281 | return newUNOP(type, 0, newDEFSVOP()); |
a0d0e21e LW |
4282 | } |
4283 | ||
79072805 LW |
4284 | if (oa) { |
4285 | while (oa & OA_OPTIONAL) | |
4286 | oa >>= 4; | |
4287 | if (oa && oa != OA_LIST) | |
11343788 | 4288 | return too_few_arguments(o,op_desc[o->op_type]); |
79072805 | 4289 | } |
11343788 | 4290 | return o; |
79072805 LW |
4291 | } |
4292 | ||
4293 | OP * | |
8ac85365 | 4294 | ck_glob(OP *o) |
79072805 | 4295 | { |
fb73857a | 4296 | GV *gv; |
4297 | ||
1f2bfc8a | 4298 | if ((o->op_flags & OPf_KIDS) && !cLISTOPo->op_first->op_sibling) |
54b9620d | 4299 | append_elem(OP_GLOB, o, newDEFSVOP()); |
fb73857a | 4300 | |
4301 | if (!((gv = gv_fetchpv("glob", FALSE, SVt_PVCV)) && GvIMPORTED_CV(gv))) | |
4302 | gv = gv_fetchpv("CORE::GLOBAL::glob", FALSE, SVt_PVCV); | |
b1cb66bf | 4303 | |
4304 | if (gv && GvIMPORTED_CV(gv)) { | |
46fc3d4c | 4305 | static int glob_index; |
4306 | ||
5196be3e | 4307 | append_elem(OP_GLOB, o, |
46fc3d4c | 4308 | newSVOP(OP_CONST, 0, newSViv(glob_index++))); |
1f2bfc8a MB |
4309 | o->op_type = OP_LIST; |
4310 | o->op_ppaddr = ppaddr[OP_LIST]; | |
4311 | cLISTOPo->op_first->op_type = OP_PUSHMARK; | |
4312 | cLISTOPo->op_first->op_ppaddr = ppaddr[OP_PUSHMARK]; | |
4313 | o = newUNOP(OP_ENTERSUB, OPf_STACKED, | |
aeea060c | 4314 | append_elem(OP_LIST, o, |
1f2bfc8a MB |
4315 | scalar(newUNOP(OP_RV2CV, 0, |
4316 | newGVOP(OP_GV, 0, gv))))); | |
d58bf5aa MB |
4317 | o = newUNOP(OP_NULL, 0, ck_subr(o)); |
4318 | o->op_targ = OP_GLOB; /* hint at what it used to be */ | |
4319 | return o; | |
b1cb66bf | 4320 | } |
4321 | gv = newGVgen("main"); | |
a0d0e21e | 4322 | gv_IOadd(gv); |
11343788 MB |
4323 | append_elem(OP_GLOB, o, newGVOP(OP_GV, 0, gv)); |
4324 | scalarkids(o); | |
4325 | return ck_fun(o); | |
79072805 LW |
4326 | } |
4327 | ||
4328 | OP * | |
8ac85365 | 4329 | ck_grep(OP *o) |
79072805 LW |
4330 | { |
4331 | LOGOP *gwop; | |
4332 | OP *kid; | |
11343788 | 4333 | OPCODE type = o->op_type == OP_GREPSTART ? OP_GREPWHILE : OP_MAPWHILE; |
79072805 | 4334 | |
11343788 | 4335 | o->op_ppaddr = ppaddr[OP_GREPSTART]; |
a0d0e21e | 4336 | Newz(1101, gwop, 1, LOGOP); |
aeea060c | 4337 | |
11343788 | 4338 | if (o->op_flags & OPf_STACKED) { |
a0d0e21e | 4339 | OP* k; |
11343788 MB |
4340 | o = ck_sort(o); |
4341 | kid = cLISTOPo->op_first->op_sibling; | |
4342 | for (k = cLISTOPo->op_first->op_sibling->op_next; k; k = k->op_next) { | |
a0d0e21e LW |
4343 | kid = k; |
4344 | } | |
4345 | kid->op_next = (OP*)gwop; | |
11343788 | 4346 | o->op_flags &= ~OPf_STACKED; |
93a17b20 | 4347 | } |
11343788 | 4348 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e LW |
4349 | if (type == OP_MAPWHILE) |
4350 | list(kid); | |
4351 | else | |
4352 | scalar(kid); | |
11343788 | 4353 | o = ck_fun(o); |
79072805 | 4354 | if (error_count) |
11343788 | 4355 | return o; |
aeea060c | 4356 | kid = cLISTOPo->op_first->op_sibling; |
79072805 | 4357 | if (kid->op_type != OP_NULL) |
463ee0b2 | 4358 | croak("panic: ck_grep"); |
79072805 LW |
4359 | kid = kUNOP->op_first; |
4360 | ||
a0d0e21e LW |
4361 | gwop->op_type = type; |
4362 | gwop->op_ppaddr = ppaddr[type]; | |
11343788 | 4363 | gwop->op_first = listkids(o); |
79072805 LW |
4364 | gwop->op_flags |= OPf_KIDS; |
4365 | gwop->op_private = 1; | |
4366 | gwop->op_other = LINKLIST(kid); | |
a0d0e21e | 4367 | gwop->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 LW |
4368 | kid->op_next = (OP*)gwop; |
4369 | ||
11343788 | 4370 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e | 4371 | if (!kid || !kid->op_sibling) |
11343788 | 4372 | return too_few_arguments(o,op_desc[o->op_type]); |
a0d0e21e LW |
4373 | for (kid = kid->op_sibling; kid; kid = kid->op_sibling) |
4374 | mod(kid, OP_GREPSTART); | |
4375 | ||
79072805 LW |
4376 | return (OP*)gwop; |
4377 | } | |
4378 | ||
4379 | OP * | |
8ac85365 | 4380 | ck_index(OP *o) |
79072805 | 4381 | { |
11343788 MB |
4382 | if (o->op_flags & OPf_KIDS) { |
4383 | OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
79072805 | 4384 | if (kid && kid->op_type == OP_CONST) |
2779dcf1 | 4385 | fbm_compile(((SVOP*)kid)->op_sv, 0); |
79072805 | 4386 | } |
11343788 | 4387 | return ck_fun(o); |
79072805 LW |
4388 | } |
4389 | ||
4390 | OP * | |
8ac85365 | 4391 | ck_lengthconst(OP *o) |
79072805 LW |
4392 | { |
4393 | /* XXX length optimization goes here */ | |
11343788 | 4394 | return ck_fun(o); |
79072805 LW |
4395 | } |
4396 | ||
4397 | OP * | |
8ac85365 | 4398 | ck_lfun(OP *o) |
79072805 | 4399 | { |
5dc0d613 MB |
4400 | OPCODE type = o->op_type; |
4401 | return modkids(ck_fun(o), type); | |
79072805 LW |
4402 | } |
4403 | ||
4404 | OP * | |
8ac85365 | 4405 | ck_rfun(OP *o) |
8990e307 | 4406 | { |
5dc0d613 MB |
4407 | OPCODE type = o->op_type; |
4408 | return refkids(ck_fun(o), type); | |
8990e307 LW |
4409 | } |
4410 | ||
4411 | OP * | |
8ac85365 | 4412 | ck_listiob(OP *o) |
79072805 LW |
4413 | { |
4414 | register OP *kid; | |
aeea060c | 4415 | |
11343788 | 4416 | kid = cLISTOPo->op_first; |
79072805 | 4417 | if (!kid) { |
11343788 MB |
4418 | o = force_list(o); |
4419 | kid = cLISTOPo->op_first; | |
79072805 LW |
4420 | } |
4421 | if (kid->op_type == OP_PUSHMARK) | |
4422 | kid = kid->op_sibling; | |
11343788 | 4423 | if (kid && o->op_flags & OPf_STACKED) |
79072805 LW |
4424 | kid = kid->op_sibling; |
4425 | else if (kid && !kid->op_sibling) { /* print HANDLE; */ | |
4426 | if (kid->op_type == OP_CONST && kid->op_private & OPpCONST_BARE) { | |
11343788 | 4427 | o->op_flags |= OPf_STACKED; /* make it a filehandle */ |
748a9306 | 4428 | kid = newUNOP(OP_RV2GV, OPf_REF, scalar(kid)); |
11343788 MB |
4429 | cLISTOPo->op_first->op_sibling = kid; |
4430 | cLISTOPo->op_last = kid; | |
79072805 LW |
4431 | kid = kid->op_sibling; |
4432 | } | |
4433 | } | |
4434 | ||
4435 | if (!kid) | |
54b9620d | 4436 | append_elem(o->op_type, o, newDEFSVOP()); |
79072805 | 4437 | |
5dc0d613 | 4438 | o = listkids(o); |
bbce6d69 | 4439 | |
5dc0d613 | 4440 | o->op_private = 0; |
36477c24 | 4441 | #ifdef USE_LOCALE |
bbce6d69 | 4442 | if (hints & HINT_LOCALE) |
5dc0d613 | 4443 | o->op_private |= OPpLOCALE; |
bbce6d69 | 4444 | #endif |
4445 | ||
5dc0d613 | 4446 | return o; |
bbce6d69 | 4447 | } |
4448 | ||
4449 | OP * | |
8ac85365 | 4450 | ck_fun_locale(OP *o) |
bbce6d69 | 4451 | { |
5dc0d613 | 4452 | o = ck_fun(o); |
bbce6d69 | 4453 | |
5dc0d613 | 4454 | o->op_private = 0; |
36477c24 | 4455 | #ifdef USE_LOCALE |
bbce6d69 | 4456 | if (hints & HINT_LOCALE) |
5dc0d613 | 4457 | o->op_private |= OPpLOCALE; |
bbce6d69 | 4458 | #endif |
4459 | ||
5dc0d613 | 4460 | return o; |
bbce6d69 | 4461 | } |
4462 | ||
4463 | OP * | |
8ac85365 | 4464 | ck_scmp(OP *o) |
bbce6d69 | 4465 | { |
5dc0d613 | 4466 | o->op_private = 0; |
36477c24 | 4467 | #ifdef USE_LOCALE |
bbce6d69 | 4468 | if (hints & HINT_LOCALE) |
5dc0d613 | 4469 | o->op_private |= OPpLOCALE; |
bbce6d69 | 4470 | #endif |
36477c24 | 4471 | |
5dc0d613 | 4472 | return o; |
79072805 LW |
4473 | } |
4474 | ||
4475 | OP * | |
8ac85365 | 4476 | ck_match(OP *o) |
79072805 | 4477 | { |
5dc0d613 | 4478 | o->op_private |= OPpRUNTIME; |
11343788 | 4479 | return o; |
79072805 LW |
4480 | } |
4481 | ||
4482 | OP * | |
8ac85365 | 4483 | ck_null(OP *o) |
79072805 | 4484 | { |
11343788 | 4485 | return o; |
79072805 LW |
4486 | } |
4487 | ||
4488 | OP * | |
8ac85365 | 4489 | ck_repeat(OP *o) |
79072805 | 4490 | { |
11343788 MB |
4491 | if (cBINOPo->op_first->op_flags & OPf_PARENS) { |
4492 | o->op_private |= OPpREPEAT_DOLIST; | |
4493 | cBINOPo->op_first = force_list(cBINOPo->op_first); | |
79072805 LW |
4494 | } |
4495 | else | |
11343788 MB |
4496 | scalar(o); |
4497 | return o; | |
79072805 LW |
4498 | } |
4499 | ||
4500 | OP * | |
8ac85365 | 4501 | ck_require(OP *o) |
8990e307 | 4502 | { |
11343788 MB |
4503 | if (o->op_flags & OPf_KIDS) { /* Shall we supply missing .pm? */ |
4504 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
8990e307 LW |
4505 | |
4506 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
8990e307 | 4507 | char *s; |
a0d0e21e LW |
4508 | for (s = SvPVX(kid->op_sv); *s; s++) { |
4509 | if (*s == ':' && s[1] == ':') { | |
4510 | *s = '/'; | |
1aef975c | 4511 | Move(s+2, s+1, strlen(s+2)+1, char); |
a0d0e21e LW |
4512 | --SvCUR(kid->op_sv); |
4513 | } | |
8990e307 | 4514 | } |
a0d0e21e | 4515 | sv_catpvn(kid->op_sv, ".pm", 3); |
8990e307 LW |
4516 | } |
4517 | } | |
11343788 | 4518 | return ck_fun(o); |
8990e307 LW |
4519 | } |
4520 | ||
4521 | OP * | |
8ac85365 | 4522 | ck_retarget(OP *o) |
79072805 | 4523 | { |
463ee0b2 | 4524 | croak("NOT IMPL LINE %d",__LINE__); |
79072805 | 4525 | /* STUB */ |
11343788 | 4526 | return o; |
79072805 LW |
4527 | } |
4528 | ||
4529 | OP * | |
8ac85365 | 4530 | ck_select(OP *o) |
79072805 | 4531 | { |
c07a80fd | 4532 | OP* kid; |
11343788 MB |
4533 | if (o->op_flags & OPf_KIDS) { |
4534 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
2304df62 | 4535 | if (kid && kid->op_sibling) { |
11343788 MB |
4536 | o->op_type = OP_SSELECT; |
4537 | o->op_ppaddr = ppaddr[OP_SSELECT]; | |
4538 | o = ck_fun(o); | |
4539 | return fold_constants(o); | |
79072805 LW |
4540 | } |
4541 | } | |
11343788 MB |
4542 | o = ck_fun(o); |
4543 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
c07a80fd | 4544 | if (kid && kid->op_type == OP_RV2GV) |
4545 | kid->op_private &= ~HINT_STRICT_REFS; | |
11343788 | 4546 | return o; |
79072805 LW |
4547 | } |
4548 | ||
4549 | OP * | |
8ac85365 | 4550 | ck_shift(OP *o) |
79072805 | 4551 | { |
11343788 | 4552 | I32 type = o->op_type; |
79072805 | 4553 | |
11343788 | 4554 | if (!(o->op_flags & OPf_KIDS)) { |
6d4ff0d2 MB |
4555 | OP *argop; |
4556 | ||
11343788 | 4557 | op_free(o); |
6d4ff0d2 | 4558 | #ifdef USE_THREADS |
977336f5 | 4559 | if (!CvUNIQUE(compcv)) { |
6d4ff0d2 MB |
4560 | argop = newOP(OP_PADAV, OPf_REF); |
4561 | argop->op_targ = 0; /* curpad[0] is @_ */ | |
4562 | } | |
4563 | else { | |
4564 | argop = newUNOP(OP_RV2AV, 0, | |
4565 | scalar(newGVOP(OP_GV, 0, | |
4566 | gv_fetchpv("ARGV", TRUE, SVt_PVAV)))); | |
4567 | } | |
4568 | #else | |
4569 | argop = newUNOP(OP_RV2AV, 0, | |
977336f5 | 4570 | scalar(newGVOP(OP_GV, 0, !CvUNIQUE(compcv) ? |
6d4ff0d2 MB |
4571 | defgv : gv_fetchpv("ARGV", TRUE, SVt_PVAV)))); |
4572 | #endif /* USE_THREADS */ | |
4573 | return newUNOP(type, 0, scalar(argop)); | |
79072805 | 4574 | } |
11343788 | 4575 | return scalar(modkids(ck_fun(o), type)); |
79072805 LW |
4576 | } |
4577 | ||
4578 | OP * | |
8ac85365 | 4579 | ck_sort(OP *o) |
79072805 | 4580 | { |
5dc0d613 | 4581 | o->op_private = 0; |
36477c24 | 4582 | #ifdef USE_LOCALE |
bbce6d69 | 4583 | if (hints & HINT_LOCALE) |
5dc0d613 | 4584 | o->op_private |= OPpLOCALE; |
bbce6d69 | 4585 | #endif |
4586 | ||
11343788 MB |
4587 | if (o->op_flags & OPf_STACKED) { |
4588 | OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
463ee0b2 LW |
4589 | OP *k; |
4590 | kid = kUNOP->op_first; /* get past rv2gv */ | |
79072805 | 4591 | |
463ee0b2 | 4592 | if (kid->op_type == OP_SCOPE || kid->op_type == OP_LEAVE) { |
79072805 | 4593 | linklist(kid); |
463ee0b2 LW |
4594 | if (kid->op_type == OP_SCOPE) { |
4595 | k = kid->op_next; | |
4596 | kid->op_next = 0; | |
79072805 | 4597 | } |
463ee0b2 | 4598 | else if (kid->op_type == OP_LEAVE) { |
11343788 | 4599 | if (o->op_type == OP_SORT) { |
748a9306 LW |
4600 | null(kid); /* wipe out leave */ |
4601 | kid->op_next = kid; | |
463ee0b2 | 4602 | |
748a9306 LW |
4603 | for (k = kLISTOP->op_first->op_next; k; k = k->op_next) { |
4604 | if (k->op_next == kid) | |
4605 | k->op_next = 0; | |
4606 | } | |
463ee0b2 | 4607 | } |
748a9306 LW |
4608 | else |
4609 | kid->op_next = 0; /* just disconnect the leave */ | |
a0d0e21e | 4610 | k = kLISTOP->op_first; |
463ee0b2 | 4611 | } |
a0d0e21e LW |
4612 | peep(k); |
4613 | ||
11343788 | 4614 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
8990e307 | 4615 | null(kid); /* wipe out rv2gv */ |
11343788 | 4616 | if (o->op_type == OP_SORT) |
a0d0e21e LW |
4617 | kid->op_next = kid; |
4618 | else | |
4619 | kid->op_next = k; | |
11343788 | 4620 | o->op_flags |= OPf_SPECIAL; |
79072805 LW |
4621 | } |
4622 | } | |
bbce6d69 | 4623 | |
11343788 | 4624 | return o; |
79072805 LW |
4625 | } |
4626 | ||
4627 | OP * | |
8ac85365 | 4628 | ck_split(OP *o) |
79072805 LW |
4629 | { |
4630 | register OP *kid; | |
aeea060c | 4631 | |
11343788 MB |
4632 | if (o->op_flags & OPf_STACKED) |
4633 | return no_fh_allowed(o); | |
79072805 | 4634 | |
11343788 | 4635 | kid = cLISTOPo->op_first; |
8990e307 | 4636 | if (kid->op_type != OP_NULL) |
463ee0b2 | 4637 | croak("panic: ck_split"); |
8990e307 | 4638 | kid = kid->op_sibling; |
11343788 MB |
4639 | op_free(cLISTOPo->op_first); |
4640 | cLISTOPo->op_first = kid; | |
85e6fe83 | 4641 | if (!kid) { |
11343788 MB |
4642 | cLISTOPo->op_first = kid = newSVOP(OP_CONST, 0, newSVpv(" ", 1)); |
4643 | cLISTOPo->op_last = kid; /* There was only one element previously */ | |
85e6fe83 | 4644 | } |
79072805 LW |
4645 | |
4646 | if (kid->op_type != OP_MATCH) { | |
4647 | OP *sibl = kid->op_sibling; | |
463ee0b2 | 4648 | kid->op_sibling = 0; |
79072805 | 4649 | kid = pmruntime( newPMOP(OP_MATCH, OPf_SPECIAL), kid, Nullop); |
11343788 MB |
4650 | if (cLISTOPo->op_first == cLISTOPo->op_last) |
4651 | cLISTOPo->op_last = kid; | |
4652 | cLISTOPo->op_first = kid; | |
79072805 LW |
4653 | kid->op_sibling = sibl; |
4654 | } | |
4655 | ||
4656 | kid->op_type = OP_PUSHRE; | |
4657 | kid->op_ppaddr = ppaddr[OP_PUSHRE]; | |
4658 | scalar(kid); | |
4659 | ||
4660 | if (!kid->op_sibling) | |
54b9620d | 4661 | append_elem(OP_SPLIT, o, newDEFSVOP()); |
79072805 LW |
4662 | |
4663 | kid = kid->op_sibling; | |
4664 | scalar(kid); | |
4665 | ||
4666 | if (!kid->op_sibling) | |
11343788 | 4667 | append_elem(OP_SPLIT, o, newSVOP(OP_CONST, 0, newSViv(0))); |
79072805 LW |
4668 | |
4669 | kid = kid->op_sibling; | |
4670 | scalar(kid); | |
4671 | ||
4672 | if (kid->op_sibling) | |
11343788 | 4673 | return too_many_arguments(o,op_desc[o->op_type]); |
79072805 | 4674 | |
11343788 | 4675 | return o; |
79072805 LW |
4676 | } |
4677 | ||
4678 | OP * | |
8ac85365 | 4679 | ck_subr(OP *o) |
79072805 | 4680 | { |
11343788 MB |
4681 | dTHR; |
4682 | OP *prev = ((cUNOPo->op_first->op_sibling) | |
4683 | ? cUNOPo : ((UNOP*)cUNOPo->op_first))->op_first; | |
4684 | OP *o2 = prev->op_sibling; | |
4633a7c4 LW |
4685 | OP *cvop; |
4686 | char *proto = 0; | |
4687 | CV *cv = 0; | |
46fc3d4c | 4688 | GV *namegv = 0; |
4633a7c4 LW |
4689 | int optional = 0; |
4690 | I32 arg = 0; | |
4691 | ||
11343788 | 4692 | for (cvop = o2; cvop->op_sibling; cvop = cvop->op_sibling) ; |
4633a7c4 LW |
4693 | if (cvop->op_type == OP_RV2CV) { |
4694 | SVOP* tmpop; | |
11343788 | 4695 | o->op_private |= (cvop->op_private & OPpENTERSUB_AMPER); |
4633a7c4 LW |
4696 | null(cvop); /* disable rv2cv */ |
4697 | tmpop = (SVOP*)((UNOP*)cvop)->op_first; | |
4698 | if (tmpop->op_type == OP_GV) { | |
8ebc5c01 | 4699 | cv = GvCVu(tmpop->op_sv); |
5dc0d613 | 4700 | if (cv && SvPOK(cv) && !(o->op_private & OPpENTERSUB_AMPER)) { |
46fc3d4c | 4701 | namegv = CvANON(cv) ? (GV*)tmpop->op_sv : CvGV(cv); |
4702 | proto = SvPV((SV*)cv, na); | |
4703 | } | |
4633a7c4 LW |
4704 | } |
4705 | } | |
11343788 | 4706 | o->op_private |= (hints & HINT_STRICT_REFS); |
84902520 | 4707 | if (PERLDB_SUB && curstash != debstash) |
11343788 MB |
4708 | o->op_private |= OPpENTERSUB_DB; |
4709 | while (o2 != cvop) { | |
4633a7c4 LW |
4710 | if (proto) { |
4711 | switch (*proto) { | |
4712 | case '\0': | |
5dc0d613 | 4713 | return too_many_arguments(o, gv_ename(namegv)); |
4633a7c4 LW |
4714 | case ';': |
4715 | optional = 1; | |
4716 | proto++; | |
4717 | continue; | |
4718 | case '$': | |
4719 | proto++; | |
4720 | arg++; | |
11343788 | 4721 | scalar(o2); |
4633a7c4 LW |
4722 | break; |
4723 | case '%': | |
4724 | case '@': | |
11343788 | 4725 | list(o2); |
4633a7c4 LW |
4726 | arg++; |
4727 | break; | |
4728 | case '&': | |
4729 | proto++; | |
4730 | arg++; | |
11343788 | 4731 | if (o2->op_type != OP_REFGEN && o2->op_type != OP_UNDEF) |
5dc0d613 | 4732 | bad_type(arg, "block", gv_ename(namegv), o2); |
4633a7c4 LW |
4733 | break; |
4734 | case '*': | |
4735 | proto++; | |
4736 | arg++; | |
11343788 | 4737 | if (o2->op_type == OP_RV2GV) |
4633a7c4 LW |
4738 | goto wrapref; |
4739 | { | |
11343788 | 4740 | OP* kid = o2; |
69dcf70c | 4741 | OP* sib = kid->op_sibling; |
4633a7c4 | 4742 | kid->op_sibling = 0; |
69dcf70c MB |
4743 | o2 = newUNOP(OP_RV2GV, 0, kid); |
4744 | o2->op_sibling = sib; | |
6fa846a0 | 4745 | prev->op_sibling = o2; |
4633a7c4 LW |
4746 | } |
4747 | goto wrapref; | |
4748 | case '\\': | |
4749 | proto++; | |
4750 | arg++; | |
4751 | switch (*proto++) { | |
4752 | case '*': | |
11343788 | 4753 | if (o2->op_type != OP_RV2GV) |
5dc0d613 | 4754 | bad_type(arg, "symbol", gv_ename(namegv), o2); |
4633a7c4 LW |
4755 | goto wrapref; |
4756 | case '&': | |
11343788 | 4757 | if (o2->op_type != OP_RV2CV) |
5dc0d613 | 4758 | bad_type(arg, "sub", gv_ename(namegv), o2); |
4633a7c4 LW |
4759 | goto wrapref; |
4760 | case '$': | |
11343788 | 4761 | if (o2->op_type != OP_RV2SV && o2->op_type != OP_PADSV) |
5dc0d613 | 4762 | bad_type(arg, "scalar", gv_ename(namegv), o2); |
4633a7c4 LW |
4763 | goto wrapref; |
4764 | case '@': | |
11343788 | 4765 | if (o2->op_type != OP_RV2AV && o2->op_type != OP_PADAV) |
5dc0d613 | 4766 | bad_type(arg, "array", gv_ename(namegv), o2); |
4633a7c4 LW |
4767 | goto wrapref; |
4768 | case '%': | |
11343788 | 4769 | if (o2->op_type != OP_RV2HV && o2->op_type != OP_PADHV) |
5dc0d613 | 4770 | bad_type(arg, "hash", gv_ename(namegv), o2); |
4633a7c4 LW |
4771 | wrapref: |
4772 | { | |
11343788 | 4773 | OP* kid = o2; |
6fa846a0 | 4774 | OP* sib = kid->op_sibling; |
4633a7c4 | 4775 | kid->op_sibling = 0; |
6fa846a0 GS |
4776 | o2 = newUNOP(OP_REFGEN, 0, kid); |
4777 | o2->op_sibling = sib; | |
e858de61 | 4778 | prev->op_sibling = o2; |
4633a7c4 LW |
4779 | } |
4780 | break; | |
4781 | default: goto oops; | |
4782 | } | |
4783 | break; | |
b1cb66bf | 4784 | case ' ': |
4785 | proto++; | |
4786 | continue; | |
4633a7c4 LW |
4787 | default: |
4788 | oops: | |
4789 | croak("Malformed prototype for %s: %s", | |
46fc3d4c | 4790 | gv_ename(namegv), SvPV((SV*)cv, na)); |
4633a7c4 LW |
4791 | } |
4792 | } | |
4793 | else | |
11343788 MB |
4794 | list(o2); |
4795 | mod(o2, OP_ENTERSUB); | |
4796 | prev = o2; | |
4797 | o2 = o2->op_sibling; | |
4633a7c4 | 4798 | } |
fb73857a | 4799 | if (proto && !optional && |
4800 | (*proto && *proto != '@' && *proto != '%' && *proto != ';')) | |
5dc0d613 | 4801 | return too_few_arguments(o, gv_ename(namegv)); |
11343788 | 4802 | return o; |
79072805 LW |
4803 | } |
4804 | ||
4805 | OP * | |
8ac85365 | 4806 | ck_svconst(OP *o) |
8990e307 | 4807 | { |
11343788 MB |
4808 | SvREADONLY_on(cSVOPo->op_sv); |
4809 | return o; | |
8990e307 LW |
4810 | } |
4811 | ||
4812 | OP * | |
8ac85365 | 4813 | ck_trunc(OP *o) |
79072805 | 4814 | { |
11343788 MB |
4815 | if (o->op_flags & OPf_KIDS) { |
4816 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 | 4817 | |
a0d0e21e LW |
4818 | if (kid->op_type == OP_NULL) |
4819 | kid = (SVOP*)kid->op_sibling; | |
4820 | if (kid && | |
4821 | kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) | |
11343788 | 4822 | o->op_flags |= OPf_SPECIAL; |
79072805 | 4823 | } |
11343788 | 4824 | return ck_fun(o); |
79072805 LW |
4825 | } |
4826 | ||
463ee0b2 LW |
4827 | /* A peephole optimizer. We visit the ops in the order they're to execute. */ |
4828 | ||
79072805 | 4829 | void |
8ac85365 | 4830 | peep(register OP *o) |
79072805 | 4831 | { |
11343788 | 4832 | dTHR; |
79072805 | 4833 | register OP* oldop = 0; |
a0d0e21e | 4834 | if (!o || o->op_seq) |
79072805 | 4835 | return; |
a0d0e21e | 4836 | ENTER; |
462e5cf6 | 4837 | SAVEOP(); |
a0d0e21e LW |
4838 | SAVESPTR(curcop); |
4839 | for (; o; o = o->op_next) { | |
4840 | if (o->op_seq) | |
4841 | break; | |
c07a80fd | 4842 | if (!op_seqmax) |
4843 | op_seqmax++; | |
a0d0e21e LW |
4844 | op = o; |
4845 | switch (o->op_type) { | |
4846 | case OP_NEXTSTATE: | |
4847 | case OP_DBSTATE: | |
4848 | curcop = ((COP*)o); /* for warnings */ | |
c07a80fd | 4849 | o->op_seq = op_seqmax++; |
a0d0e21e LW |
4850 | break; |
4851 | ||
4852 | case OP_CONCAT: | |
4853 | case OP_CONST: | |
4854 | case OP_JOIN: | |
4855 | case OP_UC: | |
4856 | case OP_UCFIRST: | |
4857 | case OP_LC: | |
4858 | case OP_LCFIRST: | |
4859 | case OP_QUOTEMETA: | |
3c4f770c | 4860 | if (o->op_next && o->op_next->op_type == OP_STRINGIFY) |
a0d0e21e | 4861 | null(o->op_next); |
c07a80fd | 4862 | o->op_seq = op_seqmax++; |
a0d0e21e | 4863 | break; |
8990e307 | 4864 | case OP_STUB: |
54310121 | 4865 | if ((o->op_flags & OPf_WANT) != OPf_WANT_LIST) { |
c07a80fd | 4866 | o->op_seq = op_seqmax++; |
54310121 | 4867 | break; /* Scalar stub must produce undef. List stub is noop */ |
8990e307 | 4868 | } |
748a9306 | 4869 | goto nothin; |
79072805 | 4870 | case OP_NULL: |
748a9306 | 4871 | if (o->op_targ == OP_NEXTSTATE || o->op_targ == OP_DBSTATE) |
7766148a | 4872 | curcop = ((COP*)o); |
748a9306 | 4873 | goto nothin; |
79072805 | 4874 | case OP_SCALAR: |
93a17b20 | 4875 | case OP_LINESEQ: |
463ee0b2 | 4876 | case OP_SCOPE: |
748a9306 | 4877 | nothin: |
a0d0e21e LW |
4878 | if (oldop && o->op_next) { |
4879 | oldop->op_next = o->op_next; | |
79072805 LW |
4880 | continue; |
4881 | } | |
c07a80fd | 4882 | o->op_seq = op_seqmax++; |
79072805 LW |
4883 | break; |
4884 | ||
4885 | case OP_GV: | |
a0d0e21e | 4886 | if (o->op_next->op_type == OP_RV2SV) { |
5f05dabc | 4887 | if (!(o->op_next->op_private & OPpDEREF)) { |
a0d0e21e LW |
4888 | null(o->op_next); |
4889 | o->op_private |= o->op_next->op_private & OPpLVAL_INTRO; | |
4890 | o->op_next = o->op_next->op_next; | |
4891 | o->op_type = OP_GVSV; | |
4892 | o->op_ppaddr = ppaddr[OP_GVSV]; | |
8990e307 LW |
4893 | } |
4894 | } | |
a0d0e21e LW |
4895 | else if (o->op_next->op_type == OP_RV2AV) { |
4896 | OP* pop = o->op_next->op_next; | |
4897 | IV i; | |
8990e307 | 4898 | if (pop->op_type == OP_CONST && |
e858de61 | 4899 | (op = pop->op_next) && |
8990e307 | 4900 | pop->op_next->op_type == OP_AELEM && |
a0d0e21e | 4901 | !(pop->op_next->op_private & |
68dc0745 | 4902 | (OPpLVAL_INTRO|OPpLVAL_DEFER|OPpDEREF)) && |
a0d0e21e LW |
4903 | (i = SvIV(((SVOP*)pop)->op_sv) - compiling.cop_arybase) |
4904 | <= 255 && | |
8990e307 LW |
4905 | i >= 0) |
4906 | { | |
748a9306 | 4907 | SvREFCNT_dec(((SVOP*)pop)->op_sv); |
a0d0e21e | 4908 | null(o->op_next); |
8990e307 LW |
4909 | null(pop->op_next); |
4910 | null(pop); | |
a0d0e21e LW |
4911 | o->op_flags |= pop->op_next->op_flags & OPf_MOD; |
4912 | o->op_next = pop->op_next->op_next; | |
4913 | o->op_type = OP_AELEMFAST; | |
4914 | o->op_ppaddr = ppaddr[OP_AELEMFAST]; | |
4915 | o->op_private = (U8)i; | |
a6006777 | 4916 | GvAVn(((GVOP*)o)->op_gv); |
8990e307 | 4917 | } |
79072805 | 4918 | } |
c07a80fd | 4919 | o->op_seq = op_seqmax++; |
79072805 LW |
4920 | break; |
4921 | ||
af41f3ca MB |
4922 | case OP_PADAV: |
4923 | if (o->op_next->op_type == OP_RV2AV | |
4924 | && (o->op_next->op_flags && OPf_REF)) | |
4925 | { | |
4926 | null(o->op_next); | |
4927 | o->op_next = o->op_next->op_next; | |
4928 | } | |
4929 | break; | |
aeea060c | 4930 | |
af41f3ca MB |
4931 | case OP_PADHV: |
4932 | if (o->op_next->op_type == OP_RV2HV | |
4933 | && (o->op_next->op_flags && OPf_REF)) | |
4934 | { | |
4935 | null(o->op_next); | |
4936 | o->op_next = o->op_next->op_next; | |
4937 | } | |
4938 | break; | |
4939 | ||
a0d0e21e | 4940 | case OP_MAPWHILE: |
79072805 LW |
4941 | case OP_GREPWHILE: |
4942 | case OP_AND: | |
4943 | case OP_OR: | |
c07a80fd | 4944 | o->op_seq = op_seqmax++; |
fd4d1407 IZ |
4945 | while (cLOGOP->op_other->op_type == OP_NULL) |
4946 | cLOGOP->op_other = cLOGOP->op_other->op_next; | |
79072805 LW |
4947 | peep(cLOGOP->op_other); |
4948 | break; | |
4949 | ||
4950 | case OP_COND_EXPR: | |
c07a80fd | 4951 | o->op_seq = op_seqmax++; |
79072805 LW |
4952 | peep(cCONDOP->op_true); |
4953 | peep(cCONDOP->op_false); | |
4954 | break; | |
4955 | ||
4956 | case OP_ENTERLOOP: | |
c07a80fd | 4957 | o->op_seq = op_seqmax++; |
79072805 LW |
4958 | peep(cLOOP->op_redoop); |
4959 | peep(cLOOP->op_nextop); | |
4960 | peep(cLOOP->op_lastop); | |
4961 | break; | |
4962 | ||
4963 | case OP_MATCH: | |
4964 | case OP_SUBST: | |
c07a80fd | 4965 | o->op_seq = op_seqmax++; |
a0d0e21e | 4966 | peep(cPMOP->op_pmreplstart); |
79072805 LW |
4967 | break; |
4968 | ||
a0d0e21e | 4969 | case OP_EXEC: |
c07a80fd | 4970 | o->op_seq = op_seqmax++; |
a0d0e21e LW |
4971 | if (dowarn && o->op_next && o->op_next->op_type == OP_NEXTSTATE) { |
4972 | if (o->op_next->op_sibling && | |
20408e3c GS |
4973 | o->op_next->op_sibling->op_type != OP_EXIT && |
4974 | o->op_next->op_sibling->op_type != OP_WARN && | |
a0d0e21e LW |
4975 | o->op_next->op_sibling->op_type != OP_DIE) { |
4976 | line_t oldline = curcop->cop_line; | |
4977 | ||
4978 | curcop->cop_line = ((COP*)o->op_next)->cop_line; | |
4979 | warn("Statement unlikely to be reached"); | |
4980 | warn("(Maybe you meant system() when you said exec()?)\n"); | |
4981 | curcop->cop_line = oldline; | |
4982 | } | |
4983 | } | |
4984 | break; | |
aeea060c | 4985 | |
c750a3ec MB |
4986 | case OP_HELEM: { |
4987 | UNOP *rop; | |
4988 | SV *lexname; | |
4989 | GV **fields; | |
4990 | SV **svp, **indsvp; | |
4991 | I32 ind; | |
4992 | char *key; | |
4993 | STRLEN keylen; | |
aeea060c | 4994 | |
c750a3ec MB |
4995 | if (o->op_private & (OPpDEREF_HV|OPpDEREF_AV|OPpLVAL_INTRO) |
4996 | || ((BINOP*)o)->op_last->op_type != OP_CONST) | |
4997 | break; | |
4998 | rop = (UNOP*)((BINOP*)o)->op_first; | |
4999 | if (rop->op_type != OP_RV2HV || rop->op_first->op_type != OP_PADSV) | |
5000 | break; | |
5001 | lexname = *av_fetch(comppad_name, rop->op_first->op_targ, TRUE); | |
5002 | if (!SvOBJECT(lexname)) | |
5003 | break; | |
5196be3e | 5004 | fields = (GV**)hv_fetch(SvSTASH(lexname), "FIELDS", 6, FALSE); |
c750a3ec MB |
5005 | if (!fields || !GvHV(*fields)) |
5006 | break; | |
5007 | svp = &((SVOP*)((BINOP*)o)->op_last)->op_sv; | |
5008 | key = SvPV(*svp, keylen); | |
5009 | indsvp = hv_fetch(GvHV(*fields), key, keylen, FALSE); | |
5010 | if (!indsvp) { | |
5011 | croak("No such field \"%s\" in variable %s of type %s", | |
5012 | key, SvPV(lexname, na), HvNAME(SvSTASH(lexname))); | |
5013 | } | |
5014 | ind = SvIV(*indsvp); | |
5015 | if (ind < 1) | |
5016 | croak("Bad index while coercing array into hash"); | |
5017 | rop->op_type = OP_RV2AV; | |
5018 | rop->op_ppaddr = ppaddr[OP_RV2AV]; | |
5019 | o->op_type = OP_AELEM; | |
5020 | o->op_ppaddr = ppaddr[OP_AELEM]; | |
5021 | SvREFCNT_dec(*svp); | |
5022 | *svp = newSViv(ind); | |
5023 | break; | |
5024 | } | |
5025 | ||
79072805 | 5026 | default: |
c07a80fd | 5027 | o->op_seq = op_seqmax++; |
79072805 LW |
5028 | break; |
5029 | } | |
a0d0e21e | 5030 | oldop = o; |
79072805 | 5031 | } |
a0d0e21e | 5032 | LEAVE; |
79072805 | 5033 | } |