Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* op.c |
79072805 | 2 | * |
a0d0e21e | 3 | * Copyright (c) 1991-1994, Larry Wall |
79072805 LW |
4 | * |
5 | * You may distribute under the terms of either the GNU General Public | |
6 | * License or the Artistic License, as specified in the README file. | |
7 | * | |
a0d0e21e LW |
8 | */ |
9 | ||
10 | /* | |
11 | * "You see: Mr. Drogo, he married poor Miss Primula Brandybuck. She was | |
12 | * our Mr. Bilbo's first cousin on the mother's side (her mother being the | |
13 | * youngest of the Old Took's daughters); and Mr. Drogo was his second | |
14 | * cousin. So Mr. Frodo is his first *and* second cousin, once removed | |
15 | * either way, as the saying is, if you follow me." --the Gaffer | |
79072805 LW |
16 | */ |
17 | ||
18 | #include "EXTERN.h" | |
19 | #include "perl.h" | |
20 | ||
e50aee73 AD |
21 | #ifdef USE_OP_MASK |
22 | /* | |
23 | * In the following definition, the ", (OP *) op" is just to make the compiler | |
24 | * think the expression is of the right type: croak actually does a longjmp. | |
25 | */ | |
26 | #define CHECKOP(type,op) ((op_mask && op_mask[type]) ? \ | |
27 | (croak("%s trapped by operation mask", op_name[type]), (OP *) op) \ | |
28 | : (*check[type])((OP *) op)) | |
29 | #else | |
30 | #define CHECKOP(type,op) (*check[type])(op) | |
31 | #endif /* USE_OP_MASK */ | |
32 | ||
a0d0e21e LW |
33 | static I32 list_assignment _((OP *op)); |
34 | static OP *bad_type _((I32 n, char *t, OP *op, OP *kid)); | |
35 | static OP *modkids _((OP *op, I32 type)); | |
36 | static OP *no_fh_allowed _((OP *op)); | |
37 | static OP *scalarboolean _((OP *op)); | |
38 | static OP *too_few_arguments _((OP *op)); | |
39 | static OP *too_many_arguments _((OP *op)); | |
40 | static void null _((OP* op)); | |
748a9306 LW |
41 | static PADOFFSET pad_findlex _((char* name, PADOFFSET newoff, I32 seq, |
42 | CV* startcv, I32 cx_ix)); | |
79072805 | 43 | |
8990e307 | 44 | static OP * |
79072805 LW |
45 | no_fh_allowed(op) |
46 | OP *op; | |
47 | { | |
48 | sprintf(tokenbuf,"Missing comma after first argument to %s function", | |
49 | op_name[op->op_type]); | |
50 | yyerror(tokenbuf); | |
51 | return op; | |
52 | } | |
53 | ||
8990e307 | 54 | static OP * |
79072805 LW |
55 | too_few_arguments(op) |
56 | OP *op; | |
57 | { | |
58 | sprintf(tokenbuf,"Not enough arguments for %s", op_name[op->op_type]); | |
59 | yyerror(tokenbuf); | |
60 | return op; | |
61 | } | |
62 | ||
8990e307 | 63 | static OP * |
79072805 LW |
64 | too_many_arguments(op) |
65 | OP *op; | |
66 | { | |
67 | sprintf(tokenbuf,"Too many arguments for %s", op_name[op->op_type]); | |
68 | yyerror(tokenbuf); | |
69 | return op; | |
70 | } | |
71 | ||
8990e307 LW |
72 | static OP * |
73 | bad_type(n, t, op, kid) | |
74 | I32 n; | |
75 | char *t; | |
76 | OP *op; | |
77 | OP *kid; | |
78 | { | |
79 | sprintf(tokenbuf, "Type of arg %d to %s must be %s (not %s)", | |
a0d0e21e | 80 | (int) n, op_name[op->op_type], t, op_name[kid->op_type]); |
8990e307 LW |
81 | yyerror(tokenbuf); |
82 | return op; | |
83 | } | |
84 | ||
a0d0e21e LW |
85 | void |
86 | assertref(op) | |
87 | OP *op; | |
88 | { | |
89 | int type = op->op_type; | |
90 | if (type != OP_AELEM && type != OP_HELEM) { | |
748a9306 | 91 | sprintf(tokenbuf, "Can't use subscript on %s", |
a0d0e21e LW |
92 | op_name[type]); |
93 | yyerror(tokenbuf); | |
94 | if (type == OP_RV2HV || type == OP_ENTERSUB) | |
748a9306 | 95 | warn("(Did you mean $ or @ instead of %c?)\n", |
a0d0e21e LW |
96 | type == OP_RV2HV ? '%' : '&'); |
97 | } | |
98 | } | |
99 | ||
79072805 LW |
100 | /* "register" allocation */ |
101 | ||
102 | PADOFFSET | |
93a17b20 LW |
103 | pad_allocmy(name) |
104 | char *name; | |
105 | { | |
a0d0e21e LW |
106 | PADOFFSET off; |
107 | SV *sv; | |
108 | ||
109 | if (!(isALPHA(name[1]) || name[1] == '_' && (int)strlen(name) > 2)) { | |
110 | if (!isprint(name[1])) | |
111 | sprintf(name+1, "^%c", name[1] ^ 64); /* XXX is tokenbuf, really */ | |
112 | croak("Can't use global %s in \"my\"",name); | |
113 | } | |
114 | off = pad_alloc(OP_PADSV, SVs_PADMY); | |
115 | sv = NEWSV(1102,0); | |
93a17b20 LW |
116 | sv_upgrade(sv, SVt_PVNV); |
117 | sv_setpv(sv, name); | |
8990e307 | 118 | av_store(comppad_name, off, sv); |
748a9306 | 119 | SvNVX(sv) = (double)999999999; |
8990e307 LW |
120 | SvIVX(sv) = 0; /* Not yet introduced--see newSTATEOP */ |
121 | if (!min_intro_pending) | |
122 | min_intro_pending = off; | |
123 | max_intro_pending = off; | |
93a17b20 | 124 | if (*name == '@') |
463ee0b2 | 125 | av_store(comppad, off, (SV*)newAV()); |
93a17b20 | 126 | else if (*name == '%') |
463ee0b2 | 127 | av_store(comppad, off, (SV*)newHV()); |
ed6116ce | 128 | SvPADMY_on(curpad[off]); |
93a17b20 LW |
129 | return off; |
130 | } | |
131 | ||
748a9306 | 132 | static PADOFFSET |
e9a444f0 | 133 | #ifndef CAN_PROTOTYPE |
748a9306 | 134 | pad_findlex(name, newoff, seq, startcv, cx_ix) |
93a17b20 | 135 | char *name; |
748a9306 LW |
136 | PADOFFSET newoff; |
137 | I32 seq; | |
138 | CV* startcv; | |
139 | I32 cx_ix; | |
e9a444f0 LW |
140 | #else |
141 | pad_findlex(char *name, PADOFFSET newoff, I32 seq, CV* startcv, I32 cx_ix) | |
142 | #endif | |
93a17b20 | 143 | { |
748a9306 | 144 | CV *cv; |
93a17b20 LW |
145 | I32 off; |
146 | SV *sv; | |
93a17b20 LW |
147 | register I32 i; |
148 | register CONTEXT *cx; | |
a0d0e21e | 149 | int saweval; |
93a17b20 | 150 | |
748a9306 LW |
151 | for (cv = startcv; cv; cv = CvOUTSIDE(cv)) { |
152 | AV* curlist = CvPADLIST(cv); | |
153 | SV** svp = av_fetch(curlist, 0, FALSE); | |
154 | AV *curname; | |
155 | if (!svp || *svp == &sv_undef) | |
156 | break; | |
157 | curname = (AV*)*svp; | |
158 | svp = AvARRAY(curname); | |
159 | for (off = AvFILL(curname); off > 0; off--) { | |
160 | if ((sv = svp[off]) && | |
161 | sv != &sv_undef && | |
162 | seq <= SvIVX(sv) && | |
163 | seq > (I32)SvNVX(sv) && | |
164 | strEQ(SvPVX(sv), name)) | |
165 | { | |
166 | I32 depth = CvDEPTH(cv) ? CvDEPTH(cv) : 1; | |
167 | AV *oldpad = (AV*)*av_fetch(curlist, depth, FALSE); | |
168 | SV *oldsv = *av_fetch(oldpad, off, TRUE); | |
169 | if (!newoff) { /* Not a mere clone operation. */ | |
170 | SV *sv = NEWSV(1103,0); | |
171 | newoff = pad_alloc(OP_PADSV, SVs_PADMY); | |
172 | sv_upgrade(sv, SVt_PVNV); | |
173 | sv_setpv(sv, name); | |
174 | av_store(comppad_name, newoff, sv); | |
175 | SvNVX(sv) = (double)curcop->cop_seq; | |
176 | SvIVX(sv) = 999999999; /* A ref, intro immediately */ | |
177 | SvFLAGS(sv) |= SVf_FAKE; | |
178 | } | |
179 | av_store(comppad, newoff, SvREFCNT_inc(oldsv)); | |
180 | SvFLAGS(compcv) |= SVpcv_CLONE; | |
181 | return newoff; | |
182 | } | |
93a17b20 LW |
183 | } |
184 | } | |
185 | ||
186 | /* Nothing in current lexical context--try eval's context, if any. | |
187 | * This is necessary to let the perldb get at lexically scoped variables. | |
188 | * XXX This will also probably interact badly with eval tree caching. | |
189 | */ | |
190 | ||
a0d0e21e | 191 | saweval = 0; |
748a9306 | 192 | for (i = cx_ix; i >= 0; i--) { |
93a17b20 LW |
193 | cx = &cxstack[i]; |
194 | switch (cx->cx_type) { | |
195 | default: | |
748a9306 LW |
196 | if (i == 0 && saweval) { |
197 | seq = cxstack[saweval].blk_oldcop->cop_seq; | |
198 | return pad_findlex(name, newoff, seq, main_cv, 0); | |
199 | } | |
93a17b20 LW |
200 | break; |
201 | case CXt_EVAL: | |
748a9306 LW |
202 | if (cx->blk_eval.old_op_type != OP_ENTEREVAL) |
203 | return 0; /* require must have its own scope */ | |
a0d0e21e | 204 | saweval = i; |
93a17b20 LW |
205 | break; |
206 | case CXt_SUB: | |
207 | if (!saweval) | |
208 | return 0; | |
209 | cv = cx->blk_sub.cv; | |
748a9306 LW |
210 | if (debstash && CvSTASH(cv) == debstash) { /* ignore DB'* scope */ |
211 | saweval = i; /* so we know where we were called from */ | |
93a17b20 | 212 | continue; |
93a17b20 | 213 | } |
748a9306 LW |
214 | seq = cxstack[saweval].blk_oldcop->cop_seq; |
215 | return pad_findlex(name, newoff, seq, cv, i-1); | |
93a17b20 LW |
216 | } |
217 | } | |
218 | ||
748a9306 LW |
219 | return 0; |
220 | } | |
a0d0e21e | 221 | |
748a9306 LW |
222 | PADOFFSET |
223 | pad_findmy(name) | |
224 | char *name; | |
225 | { | |
226 | I32 off; | |
227 | SV *sv; | |
228 | SV **svp = AvARRAY(comppad_name); | |
229 | I32 seq = cop_seqmax; | |
230 | ||
231 | /* The one we're looking for is probably just before comppad_name_fill. */ | |
232 | for (off = comppad_name_fill; off > 0; off--) { | |
a0d0e21e LW |
233 | if ((sv = svp[off]) && |
234 | sv != &sv_undef && | |
235 | seq <= SvIVX(sv) && | |
236 | seq > (I32)SvNVX(sv) && | |
237 | strEQ(SvPVX(sv), name)) | |
238 | { | |
748a9306 | 239 | return (PADOFFSET)off; |
a0d0e21e LW |
240 | } |
241 | } | |
748a9306 LW |
242 | |
243 | /* See if it's in a nested scope */ | |
244 | off = pad_findlex(name, 0, seq, CvOUTSIDE(compcv), cxstack_ix); | |
245 | if (off) | |
246 | return off; | |
247 | ||
93a17b20 LW |
248 | return 0; |
249 | } | |
250 | ||
251 | void | |
252 | pad_leavemy(fill) | |
253 | I32 fill; | |
254 | { | |
255 | I32 off; | |
8990e307 | 256 | SV **svp = AvARRAY(comppad_name); |
93a17b20 | 257 | SV *sv; |
8990e307 LW |
258 | if (min_intro_pending && fill < min_intro_pending) { |
259 | for (off = max_intro_pending; off >= min_intro_pending; off--) { | |
a0d0e21e | 260 | if ((sv = svp[off]) && sv != &sv_undef) |
8990e307 LW |
261 | warn("%s never introduced", SvPVX(sv)); |
262 | } | |
263 | } | |
264 | /* "Deintroduce" my variables that are leaving with this scope. */ | |
265 | for (off = AvFILL(comppad_name); off > fill; off--) { | |
748a9306 | 266 | if ((sv = svp[off]) && sv != &sv_undef && SvIVX(sv) == 999999999) |
463ee0b2 | 267 | SvIVX(sv) = cop_seqmax; |
93a17b20 LW |
268 | } |
269 | } | |
270 | ||
271 | PADOFFSET | |
79072805 LW |
272 | pad_alloc(optype,tmptype) |
273 | I32 optype; | |
ed6116ce | 274 | U32 tmptype; |
79072805 LW |
275 | { |
276 | SV *sv; | |
277 | I32 retval; | |
278 | ||
279 | if (AvARRAY(comppad) != curpad) | |
463ee0b2 | 280 | croak("panic: pad_alloc"); |
a0d0e21e LW |
281 | if (pad_reset_pending) |
282 | pad_reset(); | |
ed6116ce | 283 | if (tmptype & SVs_PADMY) { |
79072805 LW |
284 | do { |
285 | sv = *av_fetch(comppad, AvFILL(comppad) + 1, TRUE); | |
ed6116ce | 286 | } while (SvPADBUSY(sv)); /* need a fresh one */ |
79072805 LW |
287 | retval = AvFILL(comppad); |
288 | } | |
289 | else { | |
290 | do { | |
291 | sv = *av_fetch(comppad, ++padix, TRUE); | |
8990e307 | 292 | } while (SvFLAGS(sv) & (SVs_PADTMP|SVs_PADMY)); |
79072805 LW |
293 | retval = padix; |
294 | } | |
8990e307 | 295 | SvFLAGS(sv) |= tmptype; |
79072805 | 296 | curpad = AvARRAY(comppad); |
a0d0e21e | 297 | DEBUG_X(fprintf(stderr, "Pad alloc %ld for %s\n", (long) retval, op_name[optype])); |
79072805 LW |
298 | return (PADOFFSET)retval; |
299 | } | |
300 | ||
301 | SV * | |
a0d0e21e | 302 | #ifndef CAN_PROTOTYPE |
79072805 LW |
303 | pad_sv(po) |
304 | PADOFFSET po; | |
8990e307 LW |
305 | #else |
306 | pad_sv(PADOFFSET po) | |
a0d0e21e | 307 | #endif /* CAN_PROTOTYPE */ |
79072805 LW |
308 | { |
309 | if (!po) | |
463ee0b2 | 310 | croak("panic: pad_sv po"); |
79072805 LW |
311 | DEBUG_X(fprintf(stderr, "Pad sv %d\n", po)); |
312 | return curpad[po]; /* eventually we'll turn this into a macro */ | |
313 | } | |
314 | ||
315 | void | |
a0d0e21e | 316 | #ifndef CAN_PROTOTYPE |
79072805 LW |
317 | pad_free(po) |
318 | PADOFFSET po; | |
8990e307 LW |
319 | #else |
320 | pad_free(PADOFFSET po) | |
a0d0e21e | 321 | #endif /* CAN_PROTOTYPE */ |
79072805 | 322 | { |
a0d0e21e LW |
323 | if (!curpad) |
324 | return; | |
79072805 | 325 | if (AvARRAY(comppad) != curpad) |
463ee0b2 | 326 | croak("panic: pad_free curpad"); |
79072805 | 327 | if (!po) |
463ee0b2 | 328 | croak("panic: pad_free po"); |
79072805 | 329 | DEBUG_X(fprintf(stderr, "Pad free %d\n", po)); |
a0d0e21e | 330 | if (curpad[po] && curpad[po] != &sv_undef) |
ed6116ce | 331 | SvPADTMP_off(curpad[po]); |
a0d0e21e | 332 | if ((I32)po < padix) |
79072805 LW |
333 | padix = po - 1; |
334 | } | |
335 | ||
336 | void | |
a0d0e21e | 337 | #ifndef CAN_PROTOTYPE |
79072805 LW |
338 | pad_swipe(po) |
339 | PADOFFSET po; | |
8990e307 LW |
340 | #else |
341 | pad_swipe(PADOFFSET po) | |
a0d0e21e | 342 | #endif /* CAN_PROTOTYPE */ |
79072805 LW |
343 | { |
344 | if (AvARRAY(comppad) != curpad) | |
463ee0b2 | 345 | croak("panic: pad_swipe curpad"); |
79072805 | 346 | if (!po) |
463ee0b2 | 347 | croak("panic: pad_swipe po"); |
79072805 | 348 | DEBUG_X(fprintf(stderr, "Pad swipe %d\n", po)); |
ed6116ce | 349 | SvPADTMP_off(curpad[po]); |
a0d0e21e LW |
350 | curpad[po] = NEWSV(1107,0); |
351 | SvPADTMP_on(curpad[po]); | |
352 | if ((I32)po < padix) | |
79072805 LW |
353 | padix = po - 1; |
354 | } | |
355 | ||
356 | void | |
357 | pad_reset() | |
358 | { | |
359 | register I32 po; | |
360 | ||
361 | if (AvARRAY(comppad) != curpad) | |
463ee0b2 | 362 | croak("panic: pad_reset curpad"); |
79072805 | 363 | DEBUG_X(fprintf(stderr, "Pad reset\n")); |
748a9306 LW |
364 | if (!tainting) { /* Can't mix tainted and non-tainted temporaries. */ |
365 | for (po = AvMAX(comppad); po > padix_floor; po--) { | |
366 | if (curpad[po] && curpad[po] != &sv_undef) | |
367 | SvPADTMP_off(curpad[po]); | |
368 | } | |
369 | padix = padix_floor; | |
79072805 | 370 | } |
a0d0e21e | 371 | pad_reset_pending = FALSE; |
79072805 LW |
372 | } |
373 | ||
374 | /* Destructor */ | |
375 | ||
376 | void | |
377 | op_free(op) | |
378 | OP *op; | |
379 | { | |
85e6fe83 | 380 | register OP *kid, *nextkid; |
79072805 LW |
381 | |
382 | if (!op) | |
383 | return; | |
384 | ||
385 | if (op->op_flags & OPf_KIDS) { | |
85e6fe83 LW |
386 | for (kid = cUNOP->op_first; kid; kid = nextkid) { |
387 | nextkid = kid->op_sibling; /* Get before next freeing kid */ | |
79072805 | 388 | op_free(kid); |
85e6fe83 | 389 | } |
79072805 LW |
390 | } |
391 | ||
79072805 | 392 | switch (op->op_type) { |
8990e307 LW |
393 | case OP_NULL: |
394 | op->op_targ = 0; /* Was holding old type, if any. */ | |
395 | break; | |
a0d0e21e LW |
396 | case OP_ENTEREVAL: |
397 | op->op_targ = 0; /* Was holding hints. */ | |
398 | break; | |
463ee0b2 | 399 | case OP_GVSV: |
79072805 | 400 | case OP_GV: |
a0d0e21e | 401 | SvREFCNT_dec(cGVOP->op_gv); |
8990e307 LW |
402 | break; |
403 | case OP_NEXTSTATE: | |
404 | case OP_DBSTATE: | |
405 | SvREFCNT_dec(cCOP->cop_filegv); | |
79072805 LW |
406 | break; |
407 | case OP_CONST: | |
8990e307 | 408 | SvREFCNT_dec(cSVOP->op_sv); |
79072805 | 409 | break; |
748a9306 LW |
410 | case OP_GOTO: |
411 | case OP_NEXT: | |
412 | case OP_LAST: | |
413 | case OP_REDO: | |
414 | if (op->op_flags & (OPf_SPECIAL|OPf_STACKED|OPf_KIDS)) | |
415 | break; | |
416 | /* FALL THROUGH */ | |
a0d0e21e LW |
417 | case OP_TRANS: |
418 | Safefree(cPVOP->op_pv); | |
419 | break; | |
420 | case OP_SUBST: | |
421 | op_free(cPMOP->op_pmreplroot); | |
422 | /* FALL THROUGH */ | |
748a9306 | 423 | case OP_PUSHRE: |
a0d0e21e | 424 | case OP_MATCH: |
e50aee73 | 425 | pregfree(cPMOP->op_pmregexp); |
748a9306 | 426 | SvREFCNT_dec(cPMOP->op_pmshort); |
a0d0e21e LW |
427 | break; |
428 | default: | |
429 | break; | |
79072805 LW |
430 | } |
431 | ||
8990e307 LW |
432 | if (op->op_targ > 0) |
433 | pad_free(op->op_targ); | |
434 | ||
79072805 LW |
435 | Safefree(op); |
436 | } | |
437 | ||
8990e307 LW |
438 | static void |
439 | null(op) | |
440 | OP* op; | |
441 | { | |
442 | if (op->op_type != OP_NULL && op->op_targ > 0) | |
443 | pad_free(op->op_targ); | |
444 | op->op_targ = op->op_type; | |
445 | op->op_type = OP_NULL; | |
446 | op->op_ppaddr = ppaddr[OP_NULL]; | |
447 | } | |
448 | ||
79072805 LW |
449 | /* Contextualizers */ |
450 | ||
463ee0b2 | 451 | #define LINKLIST(o) ((o)->op_next ? (o)->op_next : linklist((OP*)o)) |
79072805 LW |
452 | |
453 | OP * | |
454 | linklist(op) | |
455 | OP *op; | |
456 | { | |
457 | register OP *kid; | |
458 | ||
459 | if (op->op_next) | |
460 | return op->op_next; | |
461 | ||
462 | /* establish postfix order */ | |
463 | if (cUNOP->op_first) { | |
464 | op->op_next = LINKLIST(cUNOP->op_first); | |
465 | for (kid = cUNOP->op_first; kid; kid = kid->op_sibling) { | |
466 | if (kid->op_sibling) | |
467 | kid->op_next = LINKLIST(kid->op_sibling); | |
468 | else | |
469 | kid->op_next = op; | |
470 | } | |
471 | } | |
472 | else | |
473 | op->op_next = op; | |
474 | ||
475 | return op->op_next; | |
476 | } | |
477 | ||
478 | OP * | |
479 | scalarkids(op) | |
480 | OP *op; | |
481 | { | |
482 | OP *kid; | |
483 | if (op && op->op_flags & OPf_KIDS) { | |
484 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
485 | scalar(kid); | |
486 | } | |
487 | return op; | |
488 | } | |
489 | ||
a0d0e21e | 490 | static OP * |
8990e307 LW |
491 | scalarboolean(op) |
492 | OP *op; | |
493 | { | |
494 | if (dowarn && | |
a0d0e21e LW |
495 | op->op_type == OP_SASSIGN && cBINOP->op_first->op_type == OP_CONST) { |
496 | line_t oldline = curcop->cop_line; | |
497 | ||
498 | if (copline != NOLINE) | |
499 | curcop->cop_line = copline; | |
500 | warn("Found = in conditional, should be =="); | |
501 | curcop->cop_line = oldline; | |
502 | } | |
8990e307 LW |
503 | return scalar(op); |
504 | } | |
505 | ||
506 | OP * | |
79072805 LW |
507 | scalar(op) |
508 | OP *op; | |
509 | { | |
510 | OP *kid; | |
511 | ||
a0d0e21e LW |
512 | /* assumes no premature commitment */ |
513 | if (!op || (op->op_flags & OPf_KNOW) || error_count) | |
79072805 LW |
514 | return op; |
515 | ||
516 | op->op_flags &= ~OPf_LIST; | |
517 | op->op_flags |= OPf_KNOW; | |
518 | ||
519 | switch (op->op_type) { | |
520 | case OP_REPEAT: | |
521 | scalar(cBINOP->op_first); | |
8990e307 | 522 | break; |
79072805 LW |
523 | case OP_OR: |
524 | case OP_AND: | |
525 | case OP_COND_EXPR: | |
8990e307 LW |
526 | for (kid = cUNOP->op_first->op_sibling; kid; kid = kid->op_sibling) |
527 | scalar(kid); | |
79072805 | 528 | break; |
a0d0e21e LW |
529 | case OP_SPLIT: |
530 | if ((kid = ((LISTOP*)op)->op_first) && kid->op_type == OP_PUSHRE) { | |
531 | if (!kPMOP->op_pmreplroot) | |
532 | deprecate("implicit split to @_"); | |
533 | } | |
534 | /* FALL THROUGH */ | |
79072805 LW |
535 | case OP_MATCH: |
536 | case OP_SUBST: | |
537 | case OP_NULL: | |
8990e307 LW |
538 | default: |
539 | if (op->op_flags & OPf_KIDS) { | |
540 | for (kid = cUNOP->op_first; kid; kid = kid->op_sibling) | |
541 | scalar(kid); | |
542 | } | |
79072805 LW |
543 | break; |
544 | case OP_LEAVE: | |
545 | case OP_LEAVETRY: | |
748a9306 LW |
546 | scalar(cLISTOP->op_first); |
547 | /* FALL THROUGH */ | |
548 | case OP_SCOPE: | |
79072805 | 549 | case OP_LINESEQ: |
8990e307 | 550 | case OP_LIST: |
79072805 LW |
551 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) { |
552 | if (kid->op_sibling) | |
553 | scalarvoid(kid); | |
554 | else | |
555 | scalar(kid); | |
556 | } | |
93a17b20 | 557 | curcop = &compiling; |
79072805 LW |
558 | break; |
559 | } | |
79072805 LW |
560 | return op; |
561 | } | |
562 | ||
563 | OP * | |
564 | scalarvoid(op) | |
565 | OP *op; | |
566 | { | |
567 | OP *kid; | |
8990e307 LW |
568 | char* useless = 0; |
569 | SV* sv; | |
79072805 | 570 | |
a0d0e21e | 571 | if (!op || error_count) |
79072805 LW |
572 | return op; |
573 | if (op->op_flags & OPf_LIST) | |
574 | return op; | |
575 | ||
576 | op->op_flags |= OPf_KNOW; | |
577 | ||
578 | switch (op->op_type) { | |
579 | default: | |
8990e307 LW |
580 | if (!(opargs[op->op_type] & OA_FOLDCONST)) |
581 | break; | |
582 | if (op->op_flags & OPf_STACKED) | |
583 | break; | |
584 | /* FALL THROUGH */ | |
585 | case OP_GVSV: | |
586 | case OP_WANTARRAY: | |
587 | case OP_GV: | |
588 | case OP_PADSV: | |
589 | case OP_PADAV: | |
590 | case OP_PADHV: | |
591 | case OP_PADANY: | |
592 | case OP_AV2ARYLEN: | |
593 | case OP_SV2LEN: | |
594 | case OP_REF: | |
a0d0e21e LW |
595 | case OP_REFGEN: |
596 | case OP_SREFGEN: | |
8990e307 LW |
597 | case OP_DEFINED: |
598 | case OP_HEX: | |
599 | case OP_OCT: | |
600 | case OP_LENGTH: | |
601 | case OP_SUBSTR: | |
602 | case OP_VEC: | |
603 | case OP_INDEX: | |
604 | case OP_RINDEX: | |
605 | case OP_SPRINTF: | |
606 | case OP_AELEM: | |
607 | case OP_AELEMFAST: | |
608 | case OP_ASLICE: | |
609 | case OP_VALUES: | |
610 | case OP_KEYS: | |
611 | case OP_HELEM: | |
612 | case OP_HSLICE: | |
613 | case OP_UNPACK: | |
614 | case OP_PACK: | |
8990e307 LW |
615 | case OP_JOIN: |
616 | case OP_LSLICE: | |
617 | case OP_ANONLIST: | |
618 | case OP_ANONHASH: | |
619 | case OP_SORT: | |
620 | case OP_REVERSE: | |
621 | case OP_RANGE: | |
622 | case OP_FLIP: | |
623 | case OP_FLOP: | |
624 | case OP_CALLER: | |
625 | case OP_FILENO: | |
626 | case OP_EOF: | |
627 | case OP_TELL: | |
628 | case OP_GETSOCKNAME: | |
629 | case OP_GETPEERNAME: | |
630 | case OP_READLINK: | |
631 | case OP_TELLDIR: | |
632 | case OP_GETPPID: | |
633 | case OP_GETPGRP: | |
634 | case OP_GETPRIORITY: | |
635 | case OP_TIME: | |
636 | case OP_TMS: | |
637 | case OP_LOCALTIME: | |
638 | case OP_GMTIME: | |
639 | case OP_GHBYNAME: | |
640 | case OP_GHBYADDR: | |
641 | case OP_GHOSTENT: | |
642 | case OP_GNBYNAME: | |
643 | case OP_GNBYADDR: | |
644 | case OP_GNETENT: | |
645 | case OP_GPBYNAME: | |
646 | case OP_GPBYNUMBER: | |
647 | case OP_GPROTOENT: | |
648 | case OP_GSBYNAME: | |
649 | case OP_GSBYPORT: | |
650 | case OP_GSERVENT: | |
651 | case OP_GPWNAM: | |
652 | case OP_GPWUID: | |
653 | case OP_GGRNAM: | |
654 | case OP_GGRGID: | |
655 | case OP_GETLOGIN: | |
a0d0e21e | 656 | if (!(op->op_private & OPpLVAL_INTRO)) |
8990e307 LW |
657 | useless = op_name[op->op_type]; |
658 | break; | |
659 | ||
660 | case OP_RV2GV: | |
661 | case OP_RV2SV: | |
662 | case OP_RV2AV: | |
663 | case OP_RV2HV: | |
a0d0e21e | 664 | if (!(op->op_private & OPpLVAL_INTRO) && |
85e6fe83 | 665 | (!op->op_sibling || op->op_sibling->op_type != OP_READLINE)) |
8990e307 LW |
666 | useless = "a variable"; |
667 | break; | |
79072805 | 668 | |
93a17b20 | 669 | case OP_NEXTSTATE: |
8990e307 | 670 | case OP_DBSTATE: |
748a9306 | 671 | curcop = ((COP*)op); /* for warning below */ |
93a17b20 LW |
672 | break; |
673 | ||
79072805 | 674 | case OP_CONST: |
8990e307 LW |
675 | sv = cSVOP->op_sv; |
676 | if (dowarn) { | |
677 | useless = "a constant"; | |
678 | if (SvNIOK(sv) && (SvNV(sv) == 0.0 || SvNV(sv) == 1.0)) | |
679 | useless = 0; | |
680 | else if (SvPOK(sv)) { | |
681 | if (strnEQ(SvPVX(sv), "di", 2) || | |
a0d0e21e | 682 | strnEQ(SvPVX(sv), "ds", 2) || |
8990e307 LW |
683 | strnEQ(SvPVX(sv), "ig", 2)) |
684 | useless = 0; | |
685 | } | |
686 | } | |
687 | null(op); /* don't execute a constant */ | |
688 | SvREFCNT_dec(sv); /* don't even remember it */ | |
79072805 LW |
689 | break; |
690 | ||
691 | case OP_POSTINC: | |
8990e307 | 692 | op->op_type = OP_PREINC; /* pre-increment is faster */ |
79072805 LW |
693 | op->op_ppaddr = ppaddr[OP_PREINC]; |
694 | break; | |
695 | ||
696 | case OP_POSTDEC: | |
8990e307 | 697 | op->op_type = OP_PREDEC; /* pre-decrement is faster */ |
79072805 LW |
698 | op->op_ppaddr = ppaddr[OP_PREDEC]; |
699 | break; | |
700 | ||
701 | case OP_REPEAT: | |
702 | scalarvoid(cBINOP->op_first); | |
8990e307 | 703 | useless = op_name[op->op_type]; |
79072805 | 704 | break; |
8990e307 | 705 | |
79072805 LW |
706 | case OP_OR: |
707 | case OP_AND: | |
708 | case OP_COND_EXPR: | |
709 | for (kid = cUNOP->op_first->op_sibling; kid; kid = kid->op_sibling) | |
710 | scalarvoid(kid); | |
711 | break; | |
a0d0e21e | 712 | case OP_NULL: |
748a9306 LW |
713 | if (op->op_targ == OP_NEXTSTATE || op->op_targ == OP_DBSTATE) |
714 | curcop = ((COP*)op); /* for warning below */ | |
a0d0e21e LW |
715 | if (op->op_flags & OPf_STACKED) |
716 | break; | |
79072805 LW |
717 | case OP_ENTERTRY: |
718 | case OP_ENTER: | |
719 | case OP_SCALAR: | |
79072805 LW |
720 | if (!(op->op_flags & OPf_KIDS)) |
721 | break; | |
463ee0b2 | 722 | case OP_SCOPE: |
79072805 LW |
723 | case OP_LEAVE: |
724 | case OP_LEAVETRY: | |
a0d0e21e LW |
725 | case OP_LEAVELOOP: |
726 | op->op_private |= OPpLEAVE_VOID; | |
79072805 | 727 | case OP_LINESEQ: |
79072805 | 728 | case OP_LIST: |
79072805 LW |
729 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) |
730 | scalarvoid(kid); | |
731 | break; | |
a0d0e21e LW |
732 | case OP_SPLIT: |
733 | if ((kid = ((LISTOP*)op)->op_first) && kid->op_type == OP_PUSHRE) { | |
734 | if (!kPMOP->op_pmreplroot) | |
735 | deprecate("implicit split to @_"); | |
736 | } | |
737 | break; | |
748a9306 LW |
738 | case OP_DELETE: |
739 | op->op_private |= OPpLEAVE_VOID; | |
740 | break; | |
79072805 | 741 | } |
8990e307 LW |
742 | if (useless && dowarn) |
743 | warn("Useless use of %s in void context", useless); | |
79072805 LW |
744 | return op; |
745 | } | |
746 | ||
747 | OP * | |
748 | listkids(op) | |
749 | OP *op; | |
750 | { | |
751 | OP *kid; | |
752 | if (op && op->op_flags & OPf_KIDS) { | |
753 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
754 | list(kid); | |
755 | } | |
756 | return op; | |
757 | } | |
758 | ||
759 | OP * | |
760 | list(op) | |
761 | OP *op; | |
762 | { | |
763 | OP *kid; | |
764 | ||
a0d0e21e LW |
765 | /* assumes no premature commitment */ |
766 | if (!op || (op->op_flags & OPf_KNOW) || error_count) | |
79072805 LW |
767 | return op; |
768 | ||
769 | op->op_flags |= (OPf_KNOW | OPf_LIST); | |
770 | ||
771 | switch (op->op_type) { | |
772 | case OP_FLOP: | |
773 | case OP_REPEAT: | |
774 | list(cBINOP->op_first); | |
775 | break; | |
776 | case OP_OR: | |
777 | case OP_AND: | |
778 | case OP_COND_EXPR: | |
779 | for (kid = cUNOP->op_first->op_sibling; kid; kid = kid->op_sibling) | |
780 | list(kid); | |
781 | break; | |
782 | default: | |
783 | case OP_MATCH: | |
784 | case OP_SUBST: | |
785 | case OP_NULL: | |
786 | if (!(op->op_flags & OPf_KIDS)) | |
787 | break; | |
788 | if (!op->op_next && cUNOP->op_first->op_type == OP_FLOP) { | |
789 | list(cBINOP->op_first); | |
790 | return gen_constant_list(op); | |
791 | } | |
792 | case OP_LIST: | |
793 | listkids(op); | |
794 | break; | |
795 | case OP_LEAVE: | |
796 | case OP_LEAVETRY: | |
748a9306 LW |
797 | list(cLISTOP->op_first); |
798 | /* FALL THROUGH */ | |
799 | case OP_SCOPE: | |
79072805 LW |
800 | case OP_LINESEQ: |
801 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) { | |
802 | if (kid->op_sibling) | |
803 | scalarvoid(kid); | |
804 | else | |
805 | list(kid); | |
806 | } | |
93a17b20 | 807 | curcop = &compiling; |
79072805 LW |
808 | break; |
809 | } | |
810 | return op; | |
811 | } | |
812 | ||
813 | OP * | |
814 | scalarseq(op) | |
815 | OP *op; | |
816 | { | |
817 | OP *kid; | |
818 | ||
463ee0b2 LW |
819 | if (op) { |
820 | if (op->op_type == OP_LINESEQ || | |
821 | op->op_type == OP_SCOPE || | |
79072805 | 822 | op->op_type == OP_LEAVE || |
463ee0b2 LW |
823 | op->op_type == OP_LEAVETRY) |
824 | { | |
825 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) { | |
ed6116ce | 826 | if (kid->op_sibling) { |
463ee0b2 | 827 | scalarvoid(kid); |
ed6116ce | 828 | } |
463ee0b2 LW |
829 | } |
830 | curcop = &compiling; | |
79072805 | 831 | } |
463ee0b2 | 832 | op->op_flags &= ~OPf_PARENS; |
85e6fe83 | 833 | if (hints & HINT_BLOCK_SCOPE) |
463ee0b2 | 834 | op->op_flags |= OPf_PARENS; |
79072805 | 835 | } |
8990e307 LW |
836 | else |
837 | op = newOP(OP_STUB, 0); | |
79072805 LW |
838 | return op; |
839 | } | |
840 | ||
a0d0e21e | 841 | static OP * |
463ee0b2 | 842 | modkids(op, type) |
79072805 LW |
843 | OP *op; |
844 | I32 type; | |
845 | { | |
846 | OP *kid; | |
847 | if (op && op->op_flags & OPf_KIDS) { | |
848 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
463ee0b2 | 849 | mod(kid, type); |
79072805 LW |
850 | } |
851 | return op; | |
852 | } | |
853 | ||
463ee0b2 | 854 | static I32 modcount; |
79072805 LW |
855 | |
856 | OP * | |
463ee0b2 | 857 | mod(op, type) |
79072805 LW |
858 | OP *op; |
859 | I32 type; | |
860 | { | |
861 | OP *kid; | |
862 | SV *sv; | |
a0d0e21e | 863 | char mtype; |
79072805 | 864 | |
a0d0e21e | 865 | if (!op || error_count) |
79072805 LW |
866 | return op; |
867 | ||
868 | switch (op->op_type) { | |
a0d0e21e | 869 | case OP_CONST: |
748a9306 | 870 | if (!(op->op_private & (OPpCONST_ARYBASE))) |
a0d0e21e LW |
871 | goto nomod; |
872 | if (eval_start && eval_start->op_type == OP_CONST) { | |
873 | compiling.cop_arybase = (I32)SvIV(((SVOP*)eval_start)->op_sv); | |
874 | eval_start = 0; | |
875 | } | |
876 | else if (!type) { | |
877 | SAVEI32(compiling.cop_arybase); | |
748a9306 | 878 | compiling.cop_arybase = 0; |
a0d0e21e LW |
879 | } |
880 | else if (type == OP_REFGEN) | |
881 | goto nomod; | |
882 | else | |
883 | croak("That use of $[ is unsupported"); | |
884 | break; | |
885 | case OP_ENTERSUB: | |
886 | if ((type == OP_UNDEF || type == OP_REFGEN) && | |
887 | !(op->op_flags & OPf_STACKED)) { | |
888 | op->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
93a17b20 | 889 | op->op_ppaddr = ppaddr[OP_RV2CV]; |
85e6fe83 LW |
890 | assert(cUNOP->op_first->op_type == OP_NULL); |
891 | null(((LISTOP*)cUNOP->op_first)->op_first); /* disable pushmark */ | |
79072805 LW |
892 | break; |
893 | } | |
894 | /* FALL THROUGH */ | |
895 | default: | |
a0d0e21e LW |
896 | nomod: |
897 | /* grep, foreach, subcalls, refgen */ | |
898 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) | |
899 | break; | |
8990e307 | 900 | sprintf(tokenbuf, "Can't modify %s in %s", |
79072805 LW |
901 | op_name[op->op_type], |
902 | type ? op_name[type] : "local"); | |
903 | yyerror(tokenbuf); | |
904 | return op; | |
905 | ||
a0d0e21e LW |
906 | case OP_PREINC: |
907 | case OP_PREDEC: | |
908 | case OP_POW: | |
909 | case OP_MULTIPLY: | |
910 | case OP_DIVIDE: | |
911 | case OP_MODULO: | |
912 | case OP_REPEAT: | |
913 | case OP_ADD: | |
914 | case OP_SUBTRACT: | |
915 | case OP_CONCAT: | |
916 | case OP_LEFT_SHIFT: | |
917 | case OP_RIGHT_SHIFT: | |
918 | case OP_BIT_AND: | |
919 | case OP_BIT_XOR: | |
920 | case OP_BIT_OR: | |
921 | case OP_I_MULTIPLY: | |
922 | case OP_I_DIVIDE: | |
923 | case OP_I_MODULO: | |
924 | case OP_I_ADD: | |
925 | case OP_I_SUBTRACT: | |
926 | if (!(op->op_flags & OPf_STACKED)) | |
927 | goto nomod; | |
928 | modcount++; | |
929 | break; | |
930 | ||
79072805 LW |
931 | case OP_COND_EXPR: |
932 | for (kid = cUNOP->op_first->op_sibling; kid; kid = kid->op_sibling) | |
463ee0b2 | 933 | mod(kid, type); |
79072805 LW |
934 | break; |
935 | ||
936 | case OP_RV2AV: | |
937 | case OP_RV2HV: | |
748a9306 LW |
938 | if (type == OP_REFGEN && op->op_flags & OPf_PARENS) { |
939 | modcount = 10000; | |
940 | return op; /* Treat \(@foo) like ordinary list. */ | |
941 | } | |
942 | /* FALL THROUGH */ | |
79072805 | 943 | case OP_RV2GV: |
93a17b20 | 944 | ref(cUNOP->op_first, op->op_type); |
79072805 LW |
945 | /* FALL THROUGH */ |
946 | case OP_AASSIGN: | |
947 | case OP_ASLICE: | |
948 | case OP_HSLICE: | |
93a17b20 LW |
949 | case OP_NEXTSTATE: |
950 | case OP_DBSTATE: | |
a0d0e21e LW |
951 | case OP_REFGEN: |
952 | case OP_CHOMP: | |
463ee0b2 | 953 | modcount = 10000; |
79072805 | 954 | break; |
463ee0b2 | 955 | case OP_RV2SV: |
8990e307 | 956 | ref(cUNOP->op_first, op->op_type); |
463ee0b2 | 957 | /* FALL THROUGH */ |
79072805 LW |
958 | case OP_UNDEF: |
959 | case OP_GV: | |
463ee0b2 LW |
960 | case OP_AV2ARYLEN: |
961 | case OP_SASSIGN: | |
8990e307 LW |
962 | case OP_AELEMFAST: |
963 | modcount++; | |
964 | break; | |
965 | ||
748a9306 LW |
966 | case OP_PADAV: |
967 | case OP_PADHV: | |
968 | modcount = 10000; | |
969 | /* FALL THROUGH */ | |
970 | case OP_PADSV: | |
971 | modcount++; | |
972 | if (!type) | |
973 | croak("Can't localize lexical variable %s", | |
974 | SvPV(*av_fetch(comppad_name, op->op_targ, 4), na)); | |
463ee0b2 LW |
975 | break; |
976 | ||
748a9306 LW |
977 | case OP_PUSHMARK: |
978 | break; | |
a0d0e21e LW |
979 | |
980 | case OP_POS: | |
981 | mtype = '.'; | |
982 | goto makelv; | |
463ee0b2 | 983 | case OP_VEC: |
a0d0e21e LW |
984 | mtype = 'v'; |
985 | goto makelv; | |
986 | case OP_SUBSTR: | |
987 | mtype = 'x'; | |
988 | makelv: | |
8990e307 | 989 | pad_free(op->op_targ); |
ed6116ce | 990 | op->op_targ = pad_alloc(op->op_type, SVs_PADMY); |
463ee0b2 LW |
991 | sv = PAD_SV(op->op_targ); |
992 | sv_upgrade(sv, SVt_PVLV); | |
a0d0e21e | 993 | sv_magic(sv, Nullsv, mtype, Nullch, 0); |
463ee0b2 | 994 | curpad[op->op_targ] = sv; |
8990e307 LW |
995 | if (op->op_flags & OPf_KIDS) |
996 | mod(cBINOP->op_first, type); | |
463ee0b2 | 997 | break; |
a0d0e21e | 998 | |
463ee0b2 LW |
999 | case OP_AELEM: |
1000 | case OP_HELEM: | |
8990e307 | 1001 | ref(cBINOP->op_first, op->op_type); |
a0d0e21e | 1002 | modcount++; |
463ee0b2 LW |
1003 | break; |
1004 | ||
1005 | case OP_SCOPE: | |
1006 | case OP_LEAVE: | |
1007 | case OP_ENTER: | |
a0d0e21e LW |
1008 | if (op->op_flags & OPf_KIDS) |
1009 | mod(cLISTOP->op_last, type); | |
1010 | break; | |
1011 | ||
1012 | case OP_NULL: | |
463ee0b2 LW |
1013 | if (!(op->op_flags & OPf_KIDS)) |
1014 | break; | |
a0d0e21e LW |
1015 | if (op->op_targ != OP_LIST) { |
1016 | mod(cBINOP->op_first, type); | |
1017 | break; | |
1018 | } | |
1019 | /* FALL THROUGH */ | |
463ee0b2 LW |
1020 | case OP_LIST: |
1021 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
1022 | mod(kid, type); | |
1023 | break; | |
1024 | } | |
a0d0e21e LW |
1025 | op->op_flags |= OPf_MOD; |
1026 | ||
1027 | if (type == OP_AASSIGN || type == OP_SASSIGN) | |
1028 | op->op_flags |= OPf_SPECIAL|OPf_REF; | |
1029 | else if (!type) { | |
1030 | op->op_private |= OPpLVAL_INTRO; | |
463ee0b2 | 1031 | op->op_flags &= ~OPf_SPECIAL; |
463ee0b2 | 1032 | } |
a0d0e21e LW |
1033 | else if (type != OP_GREPSTART && type != OP_ENTERSUB) |
1034 | op->op_flags |= OPf_REF; | |
463ee0b2 LW |
1035 | return op; |
1036 | } | |
1037 | ||
1038 | OP * | |
1039 | refkids(op, type) | |
1040 | OP *op; | |
1041 | I32 type; | |
1042 | { | |
1043 | OP *kid; | |
1044 | if (op && op->op_flags & OPf_KIDS) { | |
1045 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
1046 | ref(kid, type); | |
1047 | } | |
1048 | return op; | |
1049 | } | |
1050 | ||
1051 | OP * | |
1052 | ref(op, type) | |
1053 | OP *op; | |
1054 | I32 type; | |
1055 | { | |
1056 | OP *kid; | |
463ee0b2 | 1057 | |
a0d0e21e | 1058 | if (!op || error_count) |
463ee0b2 LW |
1059 | return op; |
1060 | ||
1061 | switch (op->op_type) { | |
a0d0e21e LW |
1062 | case OP_ENTERSUB: |
1063 | if ((type == OP_DEFINED) && | |
1064 | !(op->op_flags & OPf_STACKED)) { | |
1065 | op->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
8990e307 | 1066 | op->op_ppaddr = ppaddr[OP_RV2CV]; |
85e6fe83 LW |
1067 | assert(cUNOP->op_first->op_type == OP_NULL); |
1068 | null(((LISTOP*)cUNOP->op_first)->op_first); /* disable pushmark */ | |
8990e307 LW |
1069 | } |
1070 | break; | |
1071 | ||
463ee0b2 LW |
1072 | case OP_COND_EXPR: |
1073 | for (kid = cUNOP->op_first->op_sibling; kid; kid = kid->op_sibling) | |
1074 | ref(kid, type); | |
1075 | break; | |
8990e307 | 1076 | case OP_RV2SV: |
8990e307 | 1077 | ref(cUNOP->op_first, op->op_type); |
a0d0e21e LW |
1078 | if (type == OP_RV2AV || type == OP_RV2HV) { |
1079 | op->op_private |= (type == OP_RV2AV ? OPpDEREF_AV : OPpDEREF_HV); | |
1080 | op->op_flags |= OPf_MOD; | |
1081 | } | |
8990e307 LW |
1082 | break; |
1083 | ||
463ee0b2 LW |
1084 | case OP_RV2AV: |
1085 | case OP_RV2HV: | |
a0d0e21e | 1086 | op->op_flags |= OPf_REF; |
8990e307 | 1087 | /* FALL THROUGH */ |
463ee0b2 LW |
1088 | case OP_RV2GV: |
1089 | ref(cUNOP->op_first, op->op_type); | |
463ee0b2 | 1090 | break; |
8990e307 | 1091 | |
463ee0b2 LW |
1092 | case OP_PADAV: |
1093 | case OP_PADHV: | |
a0d0e21e | 1094 | op->op_flags |= OPf_REF; |
79072805 | 1095 | break; |
8990e307 LW |
1096 | |
1097 | case OP_SCALAR: | |
79072805 LW |
1098 | case OP_NULL: |
1099 | if (!(op->op_flags & OPf_KIDS)) | |
463ee0b2 | 1100 | break; |
8990e307 | 1101 | ref(cBINOP->op_first, type); |
79072805 LW |
1102 | break; |
1103 | case OP_AELEM: | |
1104 | case OP_HELEM: | |
8990e307 | 1105 | ref(cBINOP->op_first, op->op_type); |
a0d0e21e LW |
1106 | if (type == OP_RV2AV || type == OP_RV2HV) { |
1107 | op->op_private |= (type == OP_RV2AV ? OPpDEREF_AV : OPpDEREF_HV); | |
1108 | op->op_flags |= OPf_MOD; | |
8990e307 | 1109 | } |
79072805 LW |
1110 | break; |
1111 | ||
463ee0b2 | 1112 | case OP_SCOPE: |
79072805 LW |
1113 | case OP_LEAVE: |
1114 | case OP_ENTER: | |
8990e307 | 1115 | case OP_LIST: |
79072805 LW |
1116 | if (!(op->op_flags & OPf_KIDS)) |
1117 | break; | |
8990e307 | 1118 | ref(cLISTOP->op_last, type); |
79072805 | 1119 | break; |
a0d0e21e LW |
1120 | default: |
1121 | break; | |
79072805 | 1122 | } |
8990e307 LW |
1123 | return scalar(op); |
1124 | ||
79072805 LW |
1125 | } |
1126 | ||
1127 | OP * | |
93a17b20 LW |
1128 | my(op) |
1129 | OP *op; | |
1130 | { | |
1131 | OP *kid; | |
93a17b20 LW |
1132 | I32 type; |
1133 | ||
a0d0e21e | 1134 | if (!op || error_count) |
93a17b20 LW |
1135 | return op; |
1136 | ||
1137 | type = op->op_type; | |
1138 | if (type == OP_LIST) { | |
1139 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
1140 | my(kid); | |
1141 | } | |
1142 | else if (type != OP_PADSV && | |
1143 | type != OP_PADAV && | |
1144 | type != OP_PADHV && | |
1145 | type != OP_PUSHMARK) | |
1146 | { | |
1147 | sprintf(tokenbuf, "Can't declare %s in my", op_name[op->op_type]); | |
1148 | yyerror(tokenbuf); | |
1149 | return op; | |
1150 | } | |
a0d0e21e LW |
1151 | op->op_flags |= OPf_MOD; |
1152 | op->op_private |= OPpLVAL_INTRO; | |
93a17b20 LW |
1153 | return op; |
1154 | } | |
1155 | ||
1156 | OP * | |
79072805 LW |
1157 | sawparens(o) |
1158 | OP *o; | |
1159 | { | |
1160 | if (o) | |
1161 | o->op_flags |= OPf_PARENS; | |
1162 | return o; | |
1163 | } | |
1164 | ||
1165 | OP * | |
1166 | bind_match(type, left, right) | |
1167 | I32 type; | |
1168 | OP *left; | |
1169 | OP *right; | |
1170 | { | |
1171 | OP *op; | |
1172 | ||
1173 | if (right->op_type == OP_MATCH || | |
1174 | right->op_type == OP_SUBST || | |
1175 | right->op_type == OP_TRANS) { | |
1176 | right->op_flags |= OPf_STACKED; | |
1177 | if (right->op_type != OP_MATCH) | |
463ee0b2 | 1178 | left = mod(left, right->op_type); |
79072805 | 1179 | if (right->op_type == OP_TRANS) |
a0d0e21e | 1180 | op = newBINOP(OP_NULL, OPf_STACKED, scalar(left), right); |
79072805 LW |
1181 | else |
1182 | op = prepend_elem(right->op_type, scalar(left), right); | |
1183 | if (type == OP_NOT) | |
1184 | return newUNOP(OP_NOT, 0, scalar(op)); | |
1185 | return op; | |
1186 | } | |
1187 | else | |
1188 | return bind_match(type, left, | |
1189 | pmruntime(newPMOP(OP_MATCH, 0), right, Nullop)); | |
1190 | } | |
1191 | ||
1192 | OP * | |
1193 | invert(op) | |
1194 | OP *op; | |
1195 | { | |
1196 | if (!op) | |
1197 | return op; | |
1198 | /* XXX need to optimize away NOT NOT here? Or do we let optimizer do it? */ | |
1199 | return newUNOP(OP_NOT, OPf_SPECIAL, scalar(op)); | |
1200 | } | |
1201 | ||
1202 | OP * | |
1203 | scope(o) | |
1204 | OP *o; | |
1205 | { | |
1206 | if (o) { | |
a0d0e21e | 1207 | if (o->op_flags & OPf_PARENS || perldb) { |
463ee0b2 LW |
1208 | o = prepend_elem(OP_LINESEQ, newOP(OP_ENTER, 0), o); |
1209 | o->op_type = OP_LEAVE; | |
1210 | o->op_ppaddr = ppaddr[OP_LEAVE]; | |
1211 | } | |
1212 | else { | |
1213 | if (o->op_type == OP_LINESEQ) { | |
1214 | OP *kid; | |
1215 | o->op_type = OP_SCOPE; | |
1216 | o->op_ppaddr = ppaddr[OP_SCOPE]; | |
1217 | kid = ((LISTOP*)o)->op_first; | |
748a9306 LW |
1218 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE){ |
1219 | SvREFCNT_dec(((COP*)kid)->cop_filegv); | |
8990e307 | 1220 | null(kid); |
748a9306 | 1221 | } |
463ee0b2 LW |
1222 | } |
1223 | else | |
748a9306 | 1224 | o = newLISTOP(OP_SCOPE, 0, o, Nullop); |
463ee0b2 | 1225 | } |
79072805 LW |
1226 | } |
1227 | return o; | |
1228 | } | |
1229 | ||
a0d0e21e LW |
1230 | int |
1231 | block_start() | |
79072805 | 1232 | { |
a0d0e21e LW |
1233 | int retval = savestack_ix; |
1234 | comppad_name_fill = AvFILL(comppad_name); | |
1235 | SAVEINT(min_intro_pending); | |
1236 | SAVEINT(max_intro_pending); | |
1237 | min_intro_pending = 0; | |
1238 | SAVEINT(comppad_name_fill); | |
1239 | SAVEINT(padix_floor); | |
1240 | padix_floor = padix; | |
1241 | pad_reset_pending = FALSE; | |
1242 | SAVEINT(hints); | |
1243 | hints &= ~HINT_BLOCK_SCOPE; | |
1244 | return retval; | |
1245 | } | |
1246 | ||
1247 | OP* | |
1248 | block_end(line, floor, seq) | |
1249 | int line; | |
1250 | int floor; | |
1251 | OP* seq; | |
1252 | { | |
1253 | int needblockscope = hints & HINT_BLOCK_SCOPE; | |
1254 | OP* retval = scalarseq(seq); | |
1255 | if (copline > (line_t)line) | |
1256 | copline = line; | |
1257 | LEAVE_SCOPE(floor); | |
1258 | pad_reset_pending = FALSE; | |
1259 | if (needblockscope) | |
1260 | hints |= HINT_BLOCK_SCOPE; /* propagate out */ | |
1261 | pad_leavemy(comppad_name_fill); | |
1262 | return retval; | |
1263 | } | |
1264 | ||
1265 | void | |
1266 | newPROG(op) | |
1267 | OP *op; | |
1268 | { | |
1269 | if (in_eval) { | |
1270 | eval_root = newUNOP(OP_LEAVEEVAL, 0, op); | |
1271 | eval_start = linklist(eval_root); | |
1272 | eval_root->op_next = 0; | |
1273 | peep(eval_start); | |
1274 | } | |
1275 | else { | |
1276 | if (!op) { | |
1277 | main_start = 0; | |
1278 | return; | |
1279 | } | |
1280 | main_root = scope(sawparens(scalarvoid(op))); | |
1281 | curcop = &compiling; | |
1282 | main_start = LINKLIST(main_root); | |
1283 | main_root->op_next = 0; | |
1284 | peep(main_start); | |
748a9306 LW |
1285 | main_cv = compcv; |
1286 | compcv = 0; | |
79072805 | 1287 | } |
79072805 LW |
1288 | } |
1289 | ||
1290 | OP * | |
93a17b20 | 1291 | localize(o, lex) |
79072805 | 1292 | OP *o; |
93a17b20 | 1293 | I32 lex; |
79072805 LW |
1294 | { |
1295 | if (o->op_flags & OPf_PARENS) | |
1296 | list(o); | |
8990e307 | 1297 | else { |
79072805 | 1298 | scalar(o); |
8990e307 LW |
1299 | if (dowarn && bufptr > oldbufptr && bufptr[-1] == ',') { |
1300 | char *s; | |
1301 | for (s = bufptr; *s && (isALNUM(*s) || strchr("@$%, ",*s)); s++) ; | |
a0d0e21e | 1302 | if (*s == ';' || *s == '=') |
8990e307 LW |
1303 | warn("Parens missing around \"%s\" list", lex ? "my" : "local"); |
1304 | } | |
1305 | } | |
93a17b20 LW |
1306 | in_my = FALSE; |
1307 | if (lex) | |
1308 | return my(o); | |
1309 | else | |
463ee0b2 | 1310 | return mod(o, OP_NULL); /* a bit kludgey */ |
79072805 LW |
1311 | } |
1312 | ||
1313 | OP * | |
1314 | jmaybe(o) | |
1315 | OP *o; | |
1316 | { | |
1317 | if (o->op_type == OP_LIST) { | |
1318 | o = convert(OP_JOIN, 0, | |
1319 | prepend_elem(OP_LIST, | |
85e6fe83 | 1320 | newSVREF(newGVOP(OP_GV, 0, gv_fetchpv(";", TRUE, SVt_PV))), |
79072805 LW |
1321 | o)); |
1322 | } | |
1323 | return o; | |
1324 | } | |
1325 | ||
1326 | OP * | |
1327 | fold_constants(o) | |
1328 | register OP *o; | |
1329 | { | |
1330 | register OP *curop; | |
1331 | I32 type = o->op_type; | |
748a9306 | 1332 | SV *sv; |
79072805 LW |
1333 | |
1334 | if (opargs[type] & OA_RETSCALAR) | |
1335 | scalar(o); | |
1336 | if (opargs[type] & OA_TARGET) | |
ed6116ce | 1337 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 | 1338 | |
85e6fe83 | 1339 | if ((opargs[type] & OA_OTHERINT) && (hints & HINT_INTEGER)) |
a0d0e21e | 1340 | o->op_ppaddr = ppaddr[type = ++(o->op_type)]; |
85e6fe83 | 1341 | |
79072805 LW |
1342 | if (!(opargs[type] & OA_FOLDCONST)) |
1343 | goto nope; | |
1344 | ||
a0d0e21e LW |
1345 | if (error_count) |
1346 | goto nope; /* Don't try to run w/ errors */ | |
1347 | ||
79072805 | 1348 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
93a17b20 LW |
1349 | if (curop->op_type != OP_CONST && |
1350 | curop->op_type != OP_LIST && | |
1351 | curop->op_type != OP_SCALAR && | |
a0d0e21e | 1352 | curop->op_type != OP_NULL && |
93a17b20 | 1353 | curop->op_type != OP_PUSHMARK) { |
79072805 LW |
1354 | goto nope; |
1355 | } | |
1356 | } | |
1357 | ||
1358 | curop = LINKLIST(o); | |
1359 | o->op_next = 0; | |
1360 | op = curop; | |
1361 | run(); | |
748a9306 LW |
1362 | sv = *(stack_sp--); |
1363 | if (o->op_targ && sv == PAD_SV(o->op_targ)) /* grab pad temp? */ | |
79072805 | 1364 | pad_swipe(o->op_targ); |
748a9306 LW |
1365 | else if (SvTEMP(sv)) { /* grab mortal temp? */ |
1366 | (void)SvREFCNT_inc(sv); | |
1367 | SvTEMP_off(sv); | |
85e6fe83 | 1368 | } |
79072805 LW |
1369 | op_free(o); |
1370 | if (type == OP_RV2GV) | |
748a9306 LW |
1371 | return newGVOP(OP_GV, 0, sv); |
1372 | else { | |
1373 | if ((SvFLAGS(sv) & (SVf_IOK|SVf_NOK|SVf_POK)) == SVf_NOK) { | |
1374 | IV iv = SvIV(sv); | |
1375 | if ((double)iv == SvNV(sv)) { /* can we smush double to int */ | |
1376 | SvREFCNT_dec(sv); | |
1377 | sv = newSViv(iv); | |
1378 | } | |
1379 | } | |
1380 | return newSVOP(OP_CONST, 0, sv); | |
1381 | } | |
79072805 LW |
1382 | |
1383 | nope: | |
1384 | if (!(opargs[type] & OA_OTHERINT)) | |
1385 | return o; | |
79072805 | 1386 | |
85e6fe83 | 1387 | if (!(hints & HINT_INTEGER)) { |
a0d0e21e | 1388 | if (type == OP_DIVIDE || !(o->op_flags & OPf_KIDS)) |
85e6fe83 LW |
1389 | return o; |
1390 | ||
1391 | for (curop = ((UNOP*)o)->op_first; curop; curop = curop->op_sibling) { | |
1392 | if (curop->op_type == OP_CONST) { | |
1393 | if (SvIOK(((SVOP*)curop)->op_sv)) | |
1394 | continue; | |
1395 | return o; | |
1396 | } | |
1397 | if (opargs[curop->op_type] & OA_RETINTEGER) | |
79072805 LW |
1398 | continue; |
1399 | return o; | |
1400 | } | |
a0d0e21e | 1401 | o->op_ppaddr = ppaddr[++(o->op_type)]; |
79072805 LW |
1402 | } |
1403 | ||
79072805 LW |
1404 | return o; |
1405 | } | |
1406 | ||
1407 | OP * | |
1408 | gen_constant_list(o) | |
1409 | register OP *o; | |
1410 | { | |
1411 | register OP *curop; | |
79072805 | 1412 | I32 oldtmps_floor = tmps_floor; |
79072805 | 1413 | |
a0d0e21e LW |
1414 | list(o); |
1415 | if (error_count) | |
1416 | return o; /* Don't attempt to run with errors */ | |
1417 | ||
1418 | op = curop = LINKLIST(o); | |
1419 | o->op_next = 0; | |
1420 | pp_pushmark(); | |
79072805 | 1421 | run(); |
a0d0e21e LW |
1422 | op = curop; |
1423 | pp_anonlist(); | |
79072805 | 1424 | tmps_floor = oldtmps_floor; |
79072805 LW |
1425 | |
1426 | o->op_type = OP_RV2AV; | |
1427 | o->op_ppaddr = ppaddr[OP_RV2AV]; | |
79072805 | 1428 | curop = ((UNOP*)o)->op_first; |
a0d0e21e | 1429 | ((UNOP*)o)->op_first = newSVOP(OP_CONST, 0, SvREFCNT_inc(*stack_sp--)); |
79072805 | 1430 | op_free(curop); |
79072805 LW |
1431 | linklist(o); |
1432 | return list(o); | |
1433 | } | |
1434 | ||
1435 | OP * | |
1436 | convert(type, flags, op) | |
1437 | I32 type; | |
1438 | I32 flags; | |
1439 | OP* op; | |
1440 | { | |
1441 | OP *kid; | |
a0d0e21e | 1442 | OP *last = 0; |
79072805 | 1443 | |
79072805 LW |
1444 | if (!op || op->op_type != OP_LIST) |
1445 | op = newLISTOP(OP_LIST, 0, op, Nullop); | |
748a9306 LW |
1446 | else |
1447 | op->op_flags &= ~(OPf_KNOW|OPf_LIST); | |
79072805 | 1448 | |
8990e307 LW |
1449 | if (!(opargs[type] & OA_MARK)) |
1450 | null(cLISTOP->op_first); | |
1451 | ||
79072805 LW |
1452 | op->op_type = type; |
1453 | op->op_ppaddr = ppaddr[type]; | |
1454 | op->op_flags |= flags; | |
1455 | ||
e50aee73 | 1456 | op = CHECKOP(type, op); |
79072805 LW |
1457 | if (op->op_type != type) |
1458 | return op; | |
1459 | ||
1460 | if (cLISTOP->op_children < 7) { | |
1461 | /* XXX do we really need to do this if we're done appending?? */ | |
1462 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
1463 | last = kid; | |
1464 | cLISTOP->op_last = last; /* in case check substituted last arg */ | |
1465 | } | |
1466 | ||
1467 | return fold_constants(op); | |
1468 | } | |
1469 | ||
1470 | /* List constructors */ | |
1471 | ||
1472 | OP * | |
1473 | append_elem(type, first, last) | |
1474 | I32 type; | |
1475 | OP* first; | |
1476 | OP* last; | |
1477 | { | |
1478 | if (!first) | |
1479 | return last; | |
8990e307 LW |
1480 | |
1481 | if (!last) | |
79072805 | 1482 | return first; |
8990e307 | 1483 | |
a0d0e21e LW |
1484 | if (first->op_type != type || type==OP_LIST && first->op_flags & OPf_PARENS) |
1485 | return newLISTOP(type, 0, first, last); | |
79072805 | 1486 | |
a0d0e21e LW |
1487 | if (first->op_flags & OPf_KIDS) |
1488 | ((LISTOP*)first)->op_last->op_sibling = last; | |
1489 | else { | |
1490 | first->op_flags |= OPf_KIDS; | |
1491 | ((LISTOP*)first)->op_first = last; | |
1492 | } | |
1493 | ((LISTOP*)first)->op_last = last; | |
1494 | ((LISTOP*)first)->op_children++; | |
1495 | return first; | |
79072805 LW |
1496 | } |
1497 | ||
1498 | OP * | |
1499 | append_list(type, first, last) | |
1500 | I32 type; | |
1501 | LISTOP* first; | |
1502 | LISTOP* last; | |
1503 | { | |
1504 | if (!first) | |
1505 | return (OP*)last; | |
8990e307 LW |
1506 | |
1507 | if (!last) | |
79072805 | 1508 | return (OP*)first; |
8990e307 LW |
1509 | |
1510 | if (first->op_type != type) | |
79072805 | 1511 | return prepend_elem(type, (OP*)first, (OP*)last); |
8990e307 LW |
1512 | |
1513 | if (last->op_type != type) | |
79072805 LW |
1514 | return append_elem(type, (OP*)first, (OP*)last); |
1515 | ||
1516 | first->op_last->op_sibling = last->op_first; | |
1517 | first->op_last = last->op_last; | |
1518 | first->op_children += last->op_children; | |
1519 | if (first->op_children) | |
1520 | last->op_flags |= OPf_KIDS; | |
1521 | ||
1522 | Safefree(last); | |
1523 | return (OP*)first; | |
1524 | } | |
1525 | ||
1526 | OP * | |
1527 | prepend_elem(type, first, last) | |
1528 | I32 type; | |
1529 | OP* first; | |
1530 | OP* last; | |
1531 | { | |
1532 | if (!first) | |
1533 | return last; | |
8990e307 LW |
1534 | |
1535 | if (!last) | |
79072805 | 1536 | return first; |
8990e307 LW |
1537 | |
1538 | if (last->op_type == type) { | |
1539 | if (type == OP_LIST) { /* already a PUSHMARK there */ | |
1540 | first->op_sibling = ((LISTOP*)last)->op_first->op_sibling; | |
1541 | ((LISTOP*)last)->op_first->op_sibling = first; | |
1542 | } | |
1543 | else { | |
1544 | if (!(last->op_flags & OPf_KIDS)) { | |
1545 | ((LISTOP*)last)->op_last = first; | |
1546 | last->op_flags |= OPf_KIDS; | |
1547 | } | |
1548 | first->op_sibling = ((LISTOP*)last)->op_first; | |
1549 | ((LISTOP*)last)->op_first = first; | |
79072805 | 1550 | } |
79072805 LW |
1551 | ((LISTOP*)last)->op_children++; |
1552 | return last; | |
1553 | } | |
1554 | ||
1555 | return newLISTOP(type, 0, first, last); | |
1556 | } | |
1557 | ||
1558 | /* Constructors */ | |
1559 | ||
1560 | OP * | |
1561 | newNULLLIST() | |
1562 | { | |
8990e307 LW |
1563 | return newOP(OP_STUB, 0); |
1564 | } | |
1565 | ||
1566 | OP * | |
1567 | force_list(op) | |
1568 | OP* op; | |
1569 | { | |
1570 | if (!op || op->op_type != OP_LIST) | |
1571 | op = newLISTOP(OP_LIST, 0, op, Nullop); | |
1572 | null(op); | |
1573 | return op; | |
79072805 LW |
1574 | } |
1575 | ||
1576 | OP * | |
1577 | newLISTOP(type, flags, first, last) | |
1578 | I32 type; | |
1579 | I32 flags; | |
1580 | OP* first; | |
1581 | OP* last; | |
1582 | { | |
1583 | LISTOP *listop; | |
1584 | ||
1585 | Newz(1101, listop, 1, LISTOP); | |
1586 | ||
1587 | listop->op_type = type; | |
1588 | listop->op_ppaddr = ppaddr[type]; | |
1589 | listop->op_children = (first != 0) + (last != 0); | |
1590 | listop->op_flags = flags; | |
79072805 LW |
1591 | |
1592 | if (!last && first) | |
1593 | last = first; | |
1594 | else if (!first && last) | |
1595 | first = last; | |
8990e307 LW |
1596 | else if (first) |
1597 | first->op_sibling = last; | |
79072805 LW |
1598 | listop->op_first = first; |
1599 | listop->op_last = last; | |
8990e307 LW |
1600 | if (type == OP_LIST) { |
1601 | OP* pushop; | |
1602 | pushop = newOP(OP_PUSHMARK, 0); | |
1603 | pushop->op_sibling = first; | |
1604 | listop->op_first = pushop; | |
1605 | listop->op_flags |= OPf_KIDS; | |
1606 | if (!last) | |
1607 | listop->op_last = pushop; | |
1608 | } | |
1609 | else if (listop->op_children) | |
1610 | listop->op_flags |= OPf_KIDS; | |
79072805 LW |
1611 | |
1612 | return (OP*)listop; | |
1613 | } | |
1614 | ||
1615 | OP * | |
1616 | newOP(type, flags) | |
1617 | I32 type; | |
1618 | I32 flags; | |
1619 | { | |
1620 | OP *op; | |
1621 | Newz(1101, op, 1, OP); | |
1622 | op->op_type = type; | |
1623 | op->op_ppaddr = ppaddr[type]; | |
1624 | op->op_flags = flags; | |
1625 | ||
1626 | op->op_next = op; | |
1627 | /* op->op_private = 0; */ | |
1628 | if (opargs[type] & OA_RETSCALAR) | |
1629 | scalar(op); | |
1630 | if (opargs[type] & OA_TARGET) | |
ed6116ce | 1631 | op->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 1632 | return CHECKOP(type, op); |
79072805 LW |
1633 | } |
1634 | ||
1635 | OP * | |
1636 | newUNOP(type, flags, first) | |
1637 | I32 type; | |
1638 | I32 flags; | |
1639 | OP* first; | |
1640 | { | |
1641 | UNOP *unop; | |
1642 | ||
93a17b20 LW |
1643 | if (!first) |
1644 | first = newOP(OP_STUB, 0); | |
8990e307 LW |
1645 | if (opargs[type] & OA_MARK) |
1646 | first = force_list(first); | |
93a17b20 | 1647 | |
79072805 LW |
1648 | Newz(1101, unop, 1, UNOP); |
1649 | unop->op_type = type; | |
1650 | unop->op_ppaddr = ppaddr[type]; | |
1651 | unop->op_first = first; | |
1652 | unop->op_flags = flags | OPf_KIDS; | |
1653 | unop->op_private = 1; | |
1654 | ||
e50aee73 | 1655 | unop = (UNOP*) CHECKOP(type, unop); |
79072805 LW |
1656 | if (unop->op_next) |
1657 | return (OP*)unop; | |
1658 | ||
a0d0e21e | 1659 | return fold_constants((OP *) unop); |
79072805 LW |
1660 | } |
1661 | ||
1662 | OP * | |
1663 | newBINOP(type, flags, first, last) | |
1664 | I32 type; | |
1665 | I32 flags; | |
1666 | OP* first; | |
1667 | OP* last; | |
1668 | { | |
1669 | BINOP *binop; | |
1670 | Newz(1101, binop, 1, BINOP); | |
1671 | ||
1672 | if (!first) | |
1673 | first = newOP(OP_NULL, 0); | |
1674 | ||
1675 | binop->op_type = type; | |
1676 | binop->op_ppaddr = ppaddr[type]; | |
1677 | binop->op_first = first; | |
1678 | binop->op_flags = flags | OPf_KIDS; | |
1679 | if (!last) { | |
1680 | last = first; | |
1681 | binop->op_private = 1; | |
1682 | } | |
1683 | else { | |
1684 | binop->op_private = 2; | |
1685 | first->op_sibling = last; | |
1686 | } | |
1687 | ||
e50aee73 | 1688 | binop = (BINOP*)CHECKOP(type, binop); |
79072805 LW |
1689 | if (binop->op_next) |
1690 | return (OP*)binop; | |
1691 | ||
1692 | binop->op_last = last = binop->op_first->op_sibling; | |
1693 | ||
a0d0e21e | 1694 | return fold_constants((OP *)binop); |
79072805 LW |
1695 | } |
1696 | ||
1697 | OP * | |
1698 | pmtrans(op, expr, repl) | |
1699 | OP *op; | |
1700 | OP *expr; | |
1701 | OP *repl; | |
1702 | { | |
79072805 LW |
1703 | SV *tstr = ((SVOP*)expr)->op_sv; |
1704 | SV *rstr = ((SVOP*)repl)->op_sv; | |
463ee0b2 LW |
1705 | STRLEN tlen; |
1706 | STRLEN rlen; | |
1707 | register char *t = SvPV(tstr, tlen); | |
1708 | register char *r = SvPV(rstr, rlen); | |
79072805 LW |
1709 | register I32 i; |
1710 | register I32 j; | |
79072805 LW |
1711 | I32 delete; |
1712 | I32 complement; | |
1713 | register short *tbl; | |
1714 | ||
1715 | tbl = (short*)cPVOP->op_pv; | |
1716 | complement = op->op_private & OPpTRANS_COMPLEMENT; | |
1717 | delete = op->op_private & OPpTRANS_DELETE; | |
748a9306 | 1718 | /* squash = op->op_private & OPpTRANS_SQUASH; */ |
79072805 LW |
1719 | |
1720 | if (complement) { | |
1721 | Zero(tbl, 256, short); | |
1722 | for (i = 0; i < tlen; i++) | |
1723 | tbl[t[i] & 0377] = -1; | |
1724 | for (i = 0, j = 0; i < 256; i++) { | |
1725 | if (!tbl[i]) { | |
1726 | if (j >= rlen) { | |
1727 | if (delete) | |
1728 | tbl[i] = -2; | |
1729 | else if (rlen) | |
1730 | tbl[i] = r[j-1] & 0377; | |
1731 | else | |
1732 | tbl[i] = i; | |
1733 | } | |
1734 | else | |
1735 | tbl[i] = r[j++] & 0377; | |
1736 | } | |
1737 | } | |
1738 | } | |
1739 | else { | |
1740 | if (!rlen && !delete) { | |
1741 | r = t; rlen = tlen; | |
1742 | } | |
1743 | for (i = 0; i < 256; i++) | |
1744 | tbl[i] = -1; | |
1745 | for (i = 0, j = 0; i < tlen; i++,j++) { | |
1746 | if (j >= rlen) { | |
1747 | if (delete) { | |
1748 | if (tbl[t[i] & 0377] == -1) | |
1749 | tbl[t[i] & 0377] = -2; | |
1750 | continue; | |
1751 | } | |
1752 | --j; | |
1753 | } | |
1754 | if (tbl[t[i] & 0377] == -1) | |
1755 | tbl[t[i] & 0377] = r[j] & 0377; | |
1756 | } | |
1757 | } | |
1758 | op_free(expr); | |
1759 | op_free(repl); | |
1760 | ||
1761 | return op; | |
1762 | } | |
1763 | ||
1764 | OP * | |
1765 | newPMOP(type, flags) | |
1766 | I32 type; | |
1767 | I32 flags; | |
1768 | { | |
1769 | PMOP *pmop; | |
1770 | ||
1771 | Newz(1101, pmop, 1, PMOP); | |
1772 | pmop->op_type = type; | |
1773 | pmop->op_ppaddr = ppaddr[type]; | |
1774 | pmop->op_flags = flags; | |
1775 | pmop->op_private = 0; | |
1776 | ||
1777 | /* link into pm list */ | |
a0d0e21e | 1778 | if (type != OP_TRANS && curstash) { |
79072805 LW |
1779 | pmop->op_pmnext = HvPMROOT(curstash); |
1780 | HvPMROOT(curstash) = pmop; | |
1781 | } | |
1782 | ||
1783 | return (OP*)pmop; | |
1784 | } | |
1785 | ||
1786 | OP * | |
1787 | pmruntime(op, expr, repl) | |
1788 | OP *op; | |
1789 | OP *expr; | |
1790 | OP *repl; | |
1791 | { | |
1792 | PMOP *pm; | |
1793 | LOGOP *rcop; | |
1794 | ||
1795 | if (op->op_type == OP_TRANS) | |
1796 | return pmtrans(op, expr, repl); | |
1797 | ||
1798 | pm = (PMOP*)op; | |
1799 | ||
1800 | if (expr->op_type == OP_CONST) { | |
463ee0b2 | 1801 | STRLEN plen; |
79072805 | 1802 | SV *pat = ((SVOP*)expr)->op_sv; |
463ee0b2 | 1803 | char *p = SvPV(pat, plen); |
79072805 | 1804 | if ((op->op_flags & OPf_SPECIAL) && strEQ(p, " ")) { |
93a17b20 | 1805 | sv_setpvn(pat, "\\s+", 3); |
463ee0b2 | 1806 | p = SvPV(pat, plen); |
79072805 LW |
1807 | pm->op_pmflags |= PMf_SKIPWHITE; |
1808 | } | |
e50aee73 | 1809 | pm->op_pmregexp = pregcomp(p, p + plen, pm); |
85e6fe83 LW |
1810 | if (strEQ("\\s+", pm->op_pmregexp->precomp)) |
1811 | pm->op_pmflags |= PMf_WHITE; | |
79072805 LW |
1812 | hoistmust(pm); |
1813 | op_free(expr); | |
1814 | } | |
1815 | else { | |
463ee0b2 LW |
1816 | if (pm->op_pmflags & PMf_KEEP) |
1817 | expr = newUNOP(OP_REGCMAYBE,0,expr); | |
1818 | ||
79072805 LW |
1819 | Newz(1101, rcop, 1, LOGOP); |
1820 | rcop->op_type = OP_REGCOMP; | |
1821 | rcop->op_ppaddr = ppaddr[OP_REGCOMP]; | |
1822 | rcop->op_first = scalar(expr); | |
1823 | rcop->op_flags |= OPf_KIDS; | |
1824 | rcop->op_private = 1; | |
1825 | rcop->op_other = op; | |
1826 | ||
1827 | /* establish postfix order */ | |
463ee0b2 LW |
1828 | if (pm->op_pmflags & PMf_KEEP) { |
1829 | LINKLIST(expr); | |
1830 | rcop->op_next = expr; | |
1831 | ((UNOP*)expr)->op_first->op_next = (OP*)rcop; | |
1832 | } | |
1833 | else { | |
1834 | rcop->op_next = LINKLIST(expr); | |
1835 | expr->op_next = (OP*)rcop; | |
1836 | } | |
79072805 | 1837 | |
463ee0b2 | 1838 | prepend_elem(op->op_type, scalar((OP*)rcop), op); |
79072805 LW |
1839 | } |
1840 | ||
1841 | if (repl) { | |
748a9306 LW |
1842 | OP *curop; |
1843 | if (pm->op_pmflags & PMf_EVAL) | |
1844 | curop = 0; | |
1845 | else if (repl->op_type == OP_CONST) | |
1846 | curop = repl; | |
79072805 | 1847 | else { |
79072805 LW |
1848 | OP *lastop = 0; |
1849 | for (curop = LINKLIST(repl); curop!=repl; curop = LINKLIST(curop)) { | |
1850 | if (opargs[curop->op_type] & OA_DANGEROUS) { | |
1851 | if (curop->op_type == OP_GV) { | |
1852 | GV *gv = ((GVOP*)curop)->op_gv; | |
93a17b20 | 1853 | if (strchr("&`'123456789+", *GvENAME(gv))) |
79072805 LW |
1854 | break; |
1855 | } | |
1856 | else if (curop->op_type == OP_RV2CV) | |
1857 | break; | |
1858 | else if (curop->op_type == OP_RV2SV || | |
1859 | curop->op_type == OP_RV2AV || | |
1860 | curop->op_type == OP_RV2HV || | |
1861 | curop->op_type == OP_RV2GV) { | |
1862 | if (lastop && lastop->op_type != OP_GV) /*funny deref?*/ | |
1863 | break; | |
1864 | } | |
748a9306 LW |
1865 | else if (curop->op_type == OP_PADSV || |
1866 | curop->op_type == OP_PADAV || | |
1867 | curop->op_type == OP_PADHV || | |
1868 | curop->op_type == OP_PADANY) { | |
1869 | /* is okay */ | |
1870 | } | |
79072805 LW |
1871 | else |
1872 | break; | |
1873 | } | |
1874 | lastop = curop; | |
1875 | } | |
748a9306 LW |
1876 | } |
1877 | if (curop == repl) { | |
1878 | pm->op_pmflags |= PMf_CONST; /* const for long enough */ | |
1879 | prepend_elem(op->op_type, scalar(repl), op); | |
1880 | } | |
1881 | else { | |
1882 | Newz(1101, rcop, 1, LOGOP); | |
1883 | rcop->op_type = OP_SUBSTCONT; | |
1884 | rcop->op_ppaddr = ppaddr[OP_SUBSTCONT]; | |
1885 | rcop->op_first = scalar(repl); | |
1886 | rcop->op_flags |= OPf_KIDS; | |
1887 | rcop->op_private = 1; | |
1888 | rcop->op_other = op; | |
1889 | ||
1890 | /* establish postfix order */ | |
1891 | rcop->op_next = LINKLIST(repl); | |
1892 | repl->op_next = (OP*)rcop; | |
1893 | ||
1894 | pm->op_pmreplroot = scalar((OP*)rcop); | |
1895 | pm->op_pmreplstart = LINKLIST(rcop); | |
1896 | rcop->op_next = 0; | |
79072805 LW |
1897 | } |
1898 | } | |
1899 | ||
1900 | return (OP*)pm; | |
1901 | } | |
1902 | ||
1903 | OP * | |
1904 | newSVOP(type, flags, sv) | |
1905 | I32 type; | |
1906 | I32 flags; | |
1907 | SV *sv; | |
1908 | { | |
1909 | SVOP *svop; | |
1910 | Newz(1101, svop, 1, SVOP); | |
1911 | svop->op_type = type; | |
1912 | svop->op_ppaddr = ppaddr[type]; | |
1913 | svop->op_sv = sv; | |
1914 | svop->op_next = (OP*)svop; | |
1915 | svop->op_flags = flags; | |
1916 | if (opargs[type] & OA_RETSCALAR) | |
463ee0b2 | 1917 | scalar((OP*)svop); |
79072805 | 1918 | if (opargs[type] & OA_TARGET) |
ed6116ce | 1919 | svop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 1920 | return CHECKOP(type, svop); |
79072805 LW |
1921 | } |
1922 | ||
1923 | OP * | |
1924 | newGVOP(type, flags, gv) | |
1925 | I32 type; | |
1926 | I32 flags; | |
1927 | GV *gv; | |
1928 | { | |
1929 | GVOP *gvop; | |
1930 | Newz(1101, gvop, 1, GVOP); | |
1931 | gvop->op_type = type; | |
1932 | gvop->op_ppaddr = ppaddr[type]; | |
8990e307 | 1933 | gvop->op_gv = (GV*)SvREFCNT_inc(gv); |
79072805 LW |
1934 | gvop->op_next = (OP*)gvop; |
1935 | gvop->op_flags = flags; | |
1936 | if (opargs[type] & OA_RETSCALAR) | |
463ee0b2 | 1937 | scalar((OP*)gvop); |
79072805 | 1938 | if (opargs[type] & OA_TARGET) |
ed6116ce | 1939 | gvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 1940 | return CHECKOP(type, gvop); |
79072805 LW |
1941 | } |
1942 | ||
1943 | OP * | |
1944 | newPVOP(type, flags, pv) | |
1945 | I32 type; | |
1946 | I32 flags; | |
1947 | char *pv; | |
1948 | { | |
1949 | PVOP *pvop; | |
1950 | Newz(1101, pvop, 1, PVOP); | |
1951 | pvop->op_type = type; | |
1952 | pvop->op_ppaddr = ppaddr[type]; | |
1953 | pvop->op_pv = pv; | |
1954 | pvop->op_next = (OP*)pvop; | |
1955 | pvop->op_flags = flags; | |
1956 | if (opargs[type] & OA_RETSCALAR) | |
463ee0b2 | 1957 | scalar((OP*)pvop); |
79072805 | 1958 | if (opargs[type] & OA_TARGET) |
ed6116ce | 1959 | pvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 1960 | return CHECKOP(type, pvop); |
79072805 LW |
1961 | } |
1962 | ||
1963 | OP * | |
1964 | newCVOP(type, flags, cv, cont) | |
1965 | I32 type; | |
1966 | I32 flags; | |
1967 | CV *cv; | |
1968 | OP *cont; | |
1969 | { | |
1970 | CVOP *cvop; | |
1971 | Newz(1101, cvop, 1, CVOP); | |
1972 | cvop->op_type = type; | |
1973 | cvop->op_ppaddr = ppaddr[type]; | |
1974 | cvop->op_cv = cv; | |
1975 | cvop->op_cont = cont; | |
1976 | cvop->op_next = (OP*)cvop; | |
1977 | cvop->op_flags = flags; | |
1978 | if (opargs[type] & OA_RETSCALAR) | |
463ee0b2 | 1979 | scalar((OP*)cvop); |
79072805 | 1980 | if (opargs[type] & OA_TARGET) |
ed6116ce | 1981 | cvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 1982 | return CHECKOP(type, cvop); |
79072805 LW |
1983 | } |
1984 | ||
1985 | void | |
1986 | package(op) | |
1987 | OP *op; | |
1988 | { | |
93a17b20 | 1989 | SV *sv; |
79072805 LW |
1990 | |
1991 | save_hptr(&curstash); | |
1992 | save_item(curstname); | |
93a17b20 | 1993 | if (op) { |
463ee0b2 LW |
1994 | STRLEN len; |
1995 | char *name; | |
93a17b20 | 1996 | sv = cSVOP->op_sv; |
463ee0b2 | 1997 | name = SvPV(sv, len); |
a0d0e21e | 1998 | curstash = gv_stashpv(name,TRUE); |
463ee0b2 | 1999 | sv_setpvn(curstname, name, len); |
93a17b20 LW |
2000 | op_free(op); |
2001 | } | |
2002 | else { | |
2003 | sv_setpv(curstname,"<none>"); | |
2004 | curstash = Nullhv; | |
2005 | } | |
79072805 | 2006 | copline = NOLINE; |
8990e307 | 2007 | expect = XSTATE; |
79072805 LW |
2008 | } |
2009 | ||
85e6fe83 | 2010 | void |
a0d0e21e | 2011 | utilize(aver, id, arg) |
85e6fe83 LW |
2012 | int aver; |
2013 | OP *id; | |
2014 | OP *arg; | |
2015 | { | |
a0d0e21e LW |
2016 | OP *pack; |
2017 | OP *meth; | |
2018 | OP *rqop; | |
2019 | OP *imop; | |
85e6fe83 | 2020 | |
a0d0e21e LW |
2021 | if (id->op_type != OP_CONST) |
2022 | croak("Module name must be constant"); | |
85e6fe83 | 2023 | |
a0d0e21e LW |
2024 | meth = newSVOP(OP_CONST, 0, |
2025 | aver | |
2026 | ? newSVpv("import", 6) | |
2027 | : newSVpv("unimport", 8) | |
2028 | ); | |
2029 | ||
2030 | /* Make copy of id so we don't free it twice */ | |
2031 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); | |
2032 | ||
2033 | /* Fake up a require */ | |
2034 | rqop = newUNOP(OP_REQUIRE, 0, id); | |
2035 | ||
2036 | /* Fake up an import/unimport */ | |
2037 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, | |
2038 | append_elem(OP_LIST, | |
2039 | prepend_elem(OP_LIST, pack, list(arg)), | |
2040 | newUNOP(OP_METHOD, 0, meth))); | |
2041 | ||
2042 | /* Fake up the BEGIN {}, which does its thing immediately. */ | |
2043 | newSUB(start_subparse(), | |
2044 | newSVOP(OP_CONST, 0, newSVpv("BEGIN", 5)), | |
2045 | append_elem(OP_LINESEQ, | |
2046 | newSTATEOP(0, Nullch, rqop), | |
2047 | newSTATEOP(0, Nullch, imop) )); | |
85e6fe83 | 2048 | |
85e6fe83 LW |
2049 | copline = NOLINE; |
2050 | expect = XSTATE; | |
2051 | } | |
2052 | ||
79072805 LW |
2053 | OP * |
2054 | newSLICEOP(flags, subscript, listval) | |
2055 | I32 flags; | |
2056 | OP *subscript; | |
2057 | OP *listval; | |
2058 | { | |
2059 | return newBINOP(OP_LSLICE, flags, | |
8990e307 LW |
2060 | list(force_list(subscript)), |
2061 | list(force_list(listval)) ); | |
79072805 LW |
2062 | } |
2063 | ||
2064 | static I32 | |
2065 | list_assignment(op) | |
2066 | register OP *op; | |
2067 | { | |
2068 | if (!op) | |
2069 | return TRUE; | |
2070 | ||
2071 | if (op->op_type == OP_NULL && op->op_flags & OPf_KIDS) | |
2072 | op = cUNOP->op_first; | |
2073 | ||
2074 | if (op->op_type == OP_COND_EXPR) { | |
2075 | I32 t = list_assignment(cCONDOP->op_first->op_sibling); | |
2076 | I32 f = list_assignment(cCONDOP->op_first->op_sibling->op_sibling); | |
2077 | ||
2078 | if (t && f) | |
2079 | return TRUE; | |
2080 | if (t || f) | |
2081 | yyerror("Assignment to both a list and a scalar"); | |
2082 | return FALSE; | |
2083 | } | |
2084 | ||
2085 | if (op->op_type == OP_LIST || op->op_flags & OPf_PARENS || | |
2086 | op->op_type == OP_RV2AV || op->op_type == OP_RV2HV || | |
2087 | op->op_type == OP_ASLICE || op->op_type == OP_HSLICE) | |
2088 | return TRUE; | |
2089 | ||
93a17b20 LW |
2090 | if (op->op_type == OP_PADAV || op->op_type == OP_PADHV) |
2091 | return TRUE; | |
2092 | ||
79072805 LW |
2093 | if (op->op_type == OP_RV2SV) |
2094 | return FALSE; | |
2095 | ||
2096 | return FALSE; | |
2097 | } | |
2098 | ||
2099 | OP * | |
a0d0e21e | 2100 | newASSIGNOP(flags, left, optype, right) |
79072805 LW |
2101 | I32 flags; |
2102 | OP *left; | |
a0d0e21e | 2103 | I32 optype; |
79072805 LW |
2104 | OP *right; |
2105 | { | |
2106 | OP *op; | |
2107 | ||
a0d0e21e LW |
2108 | if (optype) { |
2109 | if (optype == OP_ANDASSIGN || optype == OP_ORASSIGN) { | |
2110 | return newLOGOP(optype, 0, | |
2111 | mod(scalar(left), optype), | |
2112 | newUNOP(OP_SASSIGN, 0, scalar(right))); | |
2113 | } | |
2114 | else { | |
2115 | return newBINOP(optype, OPf_STACKED, | |
2116 | mod(scalar(left), optype), scalar(right)); | |
2117 | } | |
2118 | } | |
2119 | ||
79072805 | 2120 | if (list_assignment(left)) { |
463ee0b2 | 2121 | modcount = 0; |
748a9306 | 2122 | eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ |
463ee0b2 | 2123 | left = mod(left, OP_AASSIGN); |
748a9306 LW |
2124 | if (eval_start) |
2125 | eval_start = 0; | |
2126 | else { | |
a0d0e21e LW |
2127 | op_free(left); |
2128 | op_free(right); | |
2129 | return Nullop; | |
2130 | } | |
79072805 LW |
2131 | if (right && right->op_type == OP_SPLIT) { |
2132 | if ((op = ((LISTOP*)right)->op_first) && op->op_type == OP_PUSHRE) { | |
2133 | PMOP *pm = (PMOP*)op; | |
a0d0e21e LW |
2134 | if (left->op_type == OP_RV2AV && |
2135 | !(left->op_private & OPpLVAL_INTRO) ) | |
2136 | { | |
79072805 LW |
2137 | op = ((UNOP*)left)->op_first; |
2138 | if (op->op_type == OP_GV && !pm->op_pmreplroot) { | |
2139 | pm->op_pmreplroot = (OP*)((GVOP*)op)->op_gv; | |
2140 | pm->op_pmflags |= PMf_ONCE; | |
2141 | op_free(left); | |
2142 | return right; | |
2143 | } | |
2144 | } | |
2145 | else { | |
463ee0b2 | 2146 | if (modcount < 10000) { |
79072805 | 2147 | SV *sv = ((SVOP*)((LISTOP*)right)->op_last)->op_sv; |
463ee0b2 LW |
2148 | if (SvIVX(sv) == 0) |
2149 | sv_setiv(sv, modcount+1); | |
79072805 LW |
2150 | } |
2151 | } | |
2152 | } | |
2153 | } | |
2154 | op = newBINOP(OP_AASSIGN, flags, | |
8990e307 LW |
2155 | list(force_list(right)), |
2156 | list(force_list(left)) ); | |
79072805 | 2157 | op->op_private = 0; |
a0d0e21e | 2158 | if (!(left->op_private & OPpLVAL_INTRO)) { |
748a9306 | 2159 | static int generation = 100; |
79072805 LW |
2160 | OP *curop; |
2161 | OP *lastop = op; | |
2162 | generation++; | |
2163 | for (curop = LINKLIST(op); curop != op; curop = LINKLIST(curop)) { | |
2164 | if (opargs[curop->op_type] & OA_DANGEROUS) { | |
2165 | if (curop->op_type == OP_GV) { | |
2166 | GV *gv = ((GVOP*)curop)->op_gv; | |
2167 | if (gv == defgv || SvCUR(gv) == generation) | |
2168 | break; | |
2169 | SvCUR(gv) = generation; | |
2170 | } | |
748a9306 LW |
2171 | else if (curop->op_type == OP_PADSV || |
2172 | curop->op_type == OP_PADAV || | |
2173 | curop->op_type == OP_PADHV || | |
2174 | curop->op_type == OP_PADANY) { | |
2175 | SV **svp = AvARRAY(comppad_name); | |
8e07c86e | 2176 | SV *sv = svp[curop->op_targ]; |
748a9306 LW |
2177 | if (SvCUR(sv) == generation) |
2178 | break; | |
2179 | SvCUR(sv) = generation; /* (SvCUR not used any more) */ | |
2180 | } | |
79072805 LW |
2181 | else if (curop->op_type == OP_RV2CV) |
2182 | break; | |
2183 | else if (curop->op_type == OP_RV2SV || | |
2184 | curop->op_type == OP_RV2AV || | |
2185 | curop->op_type == OP_RV2HV || | |
2186 | curop->op_type == OP_RV2GV) { | |
2187 | if (lastop->op_type != OP_GV) /* funny deref? */ | |
2188 | break; | |
2189 | } | |
2190 | else | |
2191 | break; | |
2192 | } | |
2193 | lastop = curop; | |
2194 | } | |
2195 | if (curop != op) | |
2196 | op->op_private = OPpASSIGN_COMMON; | |
2197 | } | |
79072805 LW |
2198 | return op; |
2199 | } | |
2200 | if (!right) | |
2201 | right = newOP(OP_UNDEF, 0); | |
2202 | if (right->op_type == OP_READLINE) { | |
2203 | right->op_flags |= OPf_STACKED; | |
463ee0b2 | 2204 | return newBINOP(OP_NULL, flags, mod(scalar(left), OP_SASSIGN), scalar(right)); |
79072805 | 2205 | } |
a0d0e21e | 2206 | else { |
748a9306 | 2207 | eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ |
79072805 | 2208 | op = newBINOP(OP_SASSIGN, flags, |
463ee0b2 | 2209 | scalar(right), mod(scalar(left), OP_SASSIGN) ); |
748a9306 LW |
2210 | if (eval_start) |
2211 | eval_start = 0; | |
2212 | else { | |
a0d0e21e LW |
2213 | op_free(op); |
2214 | return Nullop; | |
2215 | } | |
2216 | } | |
79072805 LW |
2217 | return op; |
2218 | } | |
2219 | ||
2220 | OP * | |
2221 | newSTATEOP(flags, label, op) | |
2222 | I32 flags; | |
2223 | char *label; | |
2224 | OP *op; | |
2225 | { | |
2226 | register COP *cop; | |
2227 | ||
8990e307 LW |
2228 | /* Introduce my variables. */ |
2229 | if (min_intro_pending) { | |
2230 | SV **svp = AvARRAY(comppad_name); | |
2231 | I32 i; | |
2232 | SV *sv; | |
2233 | for (i = min_intro_pending; i <= max_intro_pending; i++) { | |
8e07c86e | 2234 | if ((sv = svp[i]) && sv != &sv_undef) { |
8990e307 | 2235 | SvIVX(sv) = 999999999; /* Don't know scope end yet. */ |
748a9306 | 2236 | SvNVX(sv) = (double)cop_seqmax; |
8e07c86e | 2237 | } |
8990e307 LW |
2238 | } |
2239 | min_intro_pending = 0; | |
2240 | comppad_name_fill = max_intro_pending; /* Needn't search higher */ | |
2241 | } | |
93a17b20 | 2242 | |
79072805 | 2243 | Newz(1101, cop, 1, COP); |
8990e307 LW |
2244 | if (perldb && curcop->cop_line && curstash != debstash) { |
2245 | cop->op_type = OP_DBSTATE; | |
2246 | cop->op_ppaddr = ppaddr[ OP_DBSTATE ]; | |
2247 | } | |
2248 | else { | |
2249 | cop->op_type = OP_NEXTSTATE; | |
2250 | cop->op_ppaddr = ppaddr[ OP_NEXTSTATE ]; | |
2251 | } | |
79072805 LW |
2252 | cop->op_flags = flags; |
2253 | cop->op_private = 0; | |
2254 | cop->op_next = (OP*)cop; | |
2255 | ||
463ee0b2 LW |
2256 | if (label) { |
2257 | cop->cop_label = label; | |
85e6fe83 | 2258 | hints |= HINT_BLOCK_SCOPE; |
463ee0b2 LW |
2259 | } |
2260 | cop->cop_seq = cop_seqmax++; | |
a0d0e21e | 2261 | cop->cop_arybase = curcop->cop_arybase; |
79072805 LW |
2262 | |
2263 | if (copline == NOLINE) | |
2264 | cop->cop_line = curcop->cop_line; | |
2265 | else { | |
2266 | cop->cop_line = copline; | |
2267 | copline = NOLINE; | |
2268 | } | |
8990e307 | 2269 | cop->cop_filegv = SvREFCNT_inc(curcop->cop_filegv); |
79072805 LW |
2270 | cop->cop_stash = curstash; |
2271 | ||
8990e307 | 2272 | if (perldb && curstash != debstash) { |
93a17b20 LW |
2273 | SV **svp = av_fetch(GvAV(curcop->cop_filegv),(I32)cop->cop_line, FALSE); |
2274 | if (svp && *svp != &sv_undef && !SvIOK(*svp)) { | |
463ee0b2 | 2275 | SvIVX(*svp) = 1; |
a0d0e21e | 2276 | (void)SvIOK_on(*svp); |
93a17b20 LW |
2277 | SvSTASH(*svp) = (HV*)cop; |
2278 | } | |
2279 | } | |
2280 | ||
79072805 LW |
2281 | return prepend_elem(OP_LINESEQ, (OP*)cop, op); |
2282 | } | |
2283 | ||
2284 | OP * | |
2285 | newLOGOP(type, flags, first, other) | |
2286 | I32 type; | |
2287 | I32 flags; | |
2288 | OP* first; | |
2289 | OP* other; | |
2290 | { | |
2291 | LOGOP *logop; | |
2292 | OP *op; | |
2293 | ||
a0d0e21e LW |
2294 | if (type == OP_XOR) /* Not short circuit, but here by precedence. */ |
2295 | return newBINOP(type, flags, scalar(first), scalar(other)); | |
2296 | ||
8990e307 | 2297 | scalarboolean(first); |
79072805 LW |
2298 | /* optimize "!a && b" to "a || b", and "!a || b" to "a && b" */ |
2299 | if (first->op_type == OP_NOT && (first->op_flags & OPf_SPECIAL)) { | |
2300 | if (type == OP_AND || type == OP_OR) { | |
2301 | if (type == OP_AND) | |
2302 | type = OP_OR; | |
2303 | else | |
2304 | type = OP_AND; | |
2305 | op = first; | |
2306 | first = cUNOP->op_first; | |
2307 | if (op->op_next) | |
2308 | first->op_next = op->op_next; | |
2309 | cUNOP->op_first = Nullop; | |
2310 | op_free(op); | |
2311 | } | |
2312 | } | |
2313 | if (first->op_type == OP_CONST) { | |
93a17b20 LW |
2314 | if (dowarn && (first->op_private & OPpCONST_BARE)) |
2315 | warn("Probable precedence problem on %s", op_name[type]); | |
79072805 LW |
2316 | if ((type == OP_AND) == (SvTRUE(((SVOP*)first)->op_sv))) { |
2317 | op_free(first); | |
2318 | return other; | |
2319 | } | |
2320 | else { | |
2321 | op_free(other); | |
2322 | return first; | |
2323 | } | |
2324 | } | |
2325 | else if (first->op_type == OP_WANTARRAY) { | |
2326 | if (type == OP_AND) | |
2327 | list(other); | |
2328 | else | |
2329 | scalar(other); | |
2330 | } | |
2331 | ||
2332 | if (!other) | |
2333 | return first; | |
2334 | ||
a0d0e21e LW |
2335 | if (type == OP_ANDASSIGN || type == OP_ORASSIGN) |
2336 | other->op_private |= OPpASSIGN_BACKWARDS; /* other is an OP_SASSIGN */ | |
2337 | ||
79072805 LW |
2338 | Newz(1101, logop, 1, LOGOP); |
2339 | ||
2340 | logop->op_type = type; | |
2341 | logop->op_ppaddr = ppaddr[type]; | |
2342 | logop->op_first = first; | |
2343 | logop->op_flags = flags | OPf_KIDS; | |
2344 | logop->op_other = LINKLIST(other); | |
2345 | logop->op_private = 1; | |
2346 | ||
2347 | /* establish postfix order */ | |
2348 | logop->op_next = LINKLIST(first); | |
2349 | first->op_next = (OP*)logop; | |
2350 | first->op_sibling = other; | |
2351 | ||
2352 | op = newUNOP(OP_NULL, 0, (OP*)logop); | |
2353 | other->op_next = op; | |
2354 | ||
2355 | return op; | |
2356 | } | |
2357 | ||
2358 | OP * | |
2359 | newCONDOP(flags, first, true, false) | |
2360 | I32 flags; | |
2361 | OP* first; | |
2362 | OP* true; | |
2363 | OP* false; | |
2364 | { | |
2365 | CONDOP *condop; | |
2366 | OP *op; | |
2367 | ||
2368 | if (!false) | |
2369 | return newLOGOP(OP_AND, 0, first, true); | |
463ee0b2 LW |
2370 | if (!true) |
2371 | return newLOGOP(OP_OR, 0, first, false); | |
79072805 | 2372 | |
8990e307 | 2373 | scalarboolean(first); |
79072805 LW |
2374 | if (first->op_type == OP_CONST) { |
2375 | if (SvTRUE(((SVOP*)first)->op_sv)) { | |
2376 | op_free(first); | |
2377 | op_free(false); | |
2378 | return true; | |
2379 | } | |
2380 | else { | |
2381 | op_free(first); | |
2382 | op_free(true); | |
2383 | return false; | |
2384 | } | |
2385 | } | |
2386 | else if (first->op_type == OP_WANTARRAY) { | |
2387 | list(true); | |
2388 | scalar(false); | |
2389 | } | |
2390 | Newz(1101, condop, 1, CONDOP); | |
2391 | ||
2392 | condop->op_type = OP_COND_EXPR; | |
2393 | condop->op_ppaddr = ppaddr[OP_COND_EXPR]; | |
2394 | condop->op_first = first; | |
2395 | condop->op_flags = flags | OPf_KIDS; | |
2396 | condop->op_true = LINKLIST(true); | |
2397 | condop->op_false = LINKLIST(false); | |
2398 | condop->op_private = 1; | |
2399 | ||
2400 | /* establish postfix order */ | |
2401 | condop->op_next = LINKLIST(first); | |
2402 | first->op_next = (OP*)condop; | |
2403 | ||
2404 | first->op_sibling = true; | |
2405 | true->op_sibling = false; | |
2406 | op = newUNOP(OP_NULL, 0, (OP*)condop); | |
2407 | ||
2408 | true->op_next = op; | |
2409 | false->op_next = op; | |
2410 | ||
2411 | return op; | |
2412 | } | |
2413 | ||
2414 | OP * | |
2415 | newRANGE(flags, left, right) | |
2416 | I32 flags; | |
2417 | OP *left; | |
2418 | OP *right; | |
2419 | { | |
2420 | CONDOP *condop; | |
2421 | OP *flip; | |
2422 | OP *flop; | |
2423 | OP *op; | |
2424 | ||
2425 | Newz(1101, condop, 1, CONDOP); | |
2426 | ||
2427 | condop->op_type = OP_RANGE; | |
2428 | condop->op_ppaddr = ppaddr[OP_RANGE]; | |
2429 | condop->op_first = left; | |
2430 | condop->op_flags = OPf_KIDS; | |
2431 | condop->op_true = LINKLIST(left); | |
2432 | condop->op_false = LINKLIST(right); | |
2433 | condop->op_private = 1; | |
2434 | ||
2435 | left->op_sibling = right; | |
2436 | ||
2437 | condop->op_next = (OP*)condop; | |
2438 | flip = newUNOP(OP_FLIP, flags, (OP*)condop); | |
2439 | flop = newUNOP(OP_FLOP, 0, flip); | |
2440 | op = newUNOP(OP_NULL, 0, flop); | |
2441 | linklist(flop); | |
2442 | ||
2443 | left->op_next = flip; | |
2444 | right->op_next = flop; | |
2445 | ||
ed6116ce | 2446 | condop->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 | 2447 | sv_upgrade(PAD_SV(condop->op_targ), SVt_PVNV); |
ed6116ce | 2448 | flip->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 LW |
2449 | sv_upgrade(PAD_SV(flip->op_targ), SVt_PVNV); |
2450 | ||
2451 | flip->op_private = left->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
2452 | flop->op_private = right->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
2453 | ||
2454 | flip->op_next = op; | |
2455 | if (!flip->op_private || !flop->op_private) | |
2456 | linklist(op); /* blow off optimizer unless constant */ | |
2457 | ||
2458 | return op; | |
2459 | } | |
2460 | ||
2461 | OP * | |
2462 | newLOOPOP(flags, debuggable, expr, block) | |
2463 | I32 flags; | |
2464 | I32 debuggable; | |
2465 | OP *expr; | |
2466 | OP *block; | |
2467 | { | |
463ee0b2 | 2468 | OP* listop; |
93a17b20 | 2469 | OP* op; |
463ee0b2 | 2470 | int once = block && block->op_flags & OPf_SPECIAL && |
a0d0e21e | 2471 | (block->op_type == OP_ENTERSUB || block->op_type == OP_NULL); |
93a17b20 | 2472 | |
463ee0b2 LW |
2473 | if (expr) { |
2474 | if (once && expr->op_type == OP_CONST && !SvTRUE(((SVOP*)expr)->op_sv)) | |
2475 | return block; /* do {} while 0 does once */ | |
2476 | else if (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB) | |
a0d0e21e | 2477 | expr = newASSIGNOP(0, newSVREF(newGVOP(OP_GV, 0, defgv)), 0, expr); |
463ee0b2 | 2478 | } |
93a17b20 | 2479 | |
8990e307 | 2480 | listop = append_elem(OP_LINESEQ, block, newOP(OP_UNSTACK, 0)); |
93a17b20 | 2481 | op = newLOGOP(OP_AND, 0, expr, listop); |
463ee0b2 | 2482 | |
79072805 LW |
2483 | ((LISTOP*)listop)->op_last->op_next = LINKLIST(op); |
2484 | ||
463ee0b2 | 2485 | if (once && op != listop) |
79072805 LW |
2486 | op->op_next = ((LOGOP*)cUNOP->op_first)->op_other; |
2487 | ||
748a9306 LW |
2488 | if (op == listop) |
2489 | op = newUNOP(OP_NULL, 0, op); /* or do {} while 1 loses outer block */ | |
2490 | ||
79072805 | 2491 | op->op_flags |= flags; |
a0d0e21e | 2492 | op = scope(op); |
748a9306 | 2493 | op->op_flags |= OPf_SPECIAL; /* suppress POPBLOCK curpm restoration*/ |
a0d0e21e | 2494 | return op; |
79072805 LW |
2495 | } |
2496 | ||
2497 | OP * | |
2498 | newWHILEOP(flags, debuggable, loop, expr, block, cont) | |
2499 | I32 flags; | |
2500 | I32 debuggable; | |
2501 | LOOP *loop; | |
2502 | OP *expr; | |
2503 | OP *block; | |
2504 | OP *cont; | |
2505 | { | |
2506 | OP *redo; | |
2507 | OP *next = 0; | |
2508 | OP *listop; | |
2509 | OP *op; | |
2510 | OP *condop; | |
2511 | ||
748a9306 LW |
2512 | if (expr && (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB)) { |
2513 | expr = newUNOP(OP_DEFINED, 0, | |
2514 | newASSIGNOP(0, newSVREF(newGVOP(OP_GV, 0, defgv)), 0, expr) ); | |
2515 | } | |
79072805 LW |
2516 | |
2517 | if (!block) | |
2518 | block = newOP(OP_NULL, 0); | |
2519 | ||
2520 | if (cont) | |
2521 | next = LINKLIST(cont); | |
2522 | if (expr) | |
2523 | cont = append_elem(OP_LINESEQ, cont, newOP(OP_UNSTACK, 0)); | |
2524 | ||
463ee0b2 | 2525 | listop = append_list(OP_LINESEQ, (LISTOP*)block, (LISTOP*)cont); |
79072805 LW |
2526 | redo = LINKLIST(listop); |
2527 | ||
2528 | if (expr) { | |
2529 | op = newLOGOP(OP_AND, 0, expr, scalar(listop)); | |
85e6fe83 LW |
2530 | if (op == expr && op->op_type == OP_CONST && !SvTRUE(cSVOP->op_sv)) { |
2531 | op_free(expr); /* oops, it's a while (0) */ | |
463ee0b2 LW |
2532 | op_free((OP*)loop); |
2533 | return Nullop; /* (listop already freed by newLOGOP) */ | |
2534 | } | |
79072805 LW |
2535 | ((LISTOP*)listop)->op_last->op_next = condop = |
2536 | (op == listop ? redo : LINKLIST(op)); | |
2537 | if (!next) | |
2538 | next = condop; | |
2539 | } | |
2540 | else | |
2541 | op = listop; | |
2542 | ||
2543 | if (!loop) { | |
2544 | Newz(1101,loop,1,LOOP); | |
2545 | loop->op_type = OP_ENTERLOOP; | |
2546 | loop->op_ppaddr = ppaddr[OP_ENTERLOOP]; | |
2547 | loop->op_private = 0; | |
2548 | loop->op_next = (OP*)loop; | |
2549 | } | |
2550 | ||
463ee0b2 | 2551 | op = newBINOP(OP_LEAVELOOP, 0, (OP*)loop, op); |
79072805 LW |
2552 | |
2553 | loop->op_redoop = redo; | |
2554 | loop->op_lastop = op; | |
2555 | ||
2556 | if (next) | |
2557 | loop->op_nextop = next; | |
2558 | else | |
2559 | loop->op_nextop = op; | |
2560 | ||
2561 | op->op_flags |= flags; | |
2562 | return op; | |
2563 | } | |
2564 | ||
2565 | OP * | |
a0d0e21e | 2566 | #ifndef CAN_PROTOTYPE |
79072805 LW |
2567 | newFOROP(flags,label,forline,sv,expr,block,cont) |
2568 | I32 flags; | |
2569 | char *label; | |
2570 | line_t forline; | |
2571 | OP* sv; | |
2572 | OP* expr; | |
2573 | OP*block; | |
2574 | OP*cont; | |
8990e307 LW |
2575 | #else |
2576 | newFOROP(I32 flags,char *label,line_t forline,OP *sv,OP *expr,OP *block,OP *cont) | |
a0d0e21e | 2577 | #endif /* CAN_PROTOTYPE */ |
79072805 LW |
2578 | { |
2579 | LOOP *loop; | |
85e6fe83 | 2580 | int padoff = 0; |
79072805 LW |
2581 | |
2582 | copline = forline; | |
2583 | if (sv) { | |
85e6fe83 | 2584 | if (sv->op_type == OP_RV2SV) { /* symbol table variable */ |
748a9306 LW |
2585 | sv->op_type = OP_RV2GV; |
2586 | sv->op_ppaddr = ppaddr[OP_RV2GV]; | |
79072805 | 2587 | } |
85e6fe83 LW |
2588 | else if (sv->op_type == OP_PADSV) { /* private variable */ |
2589 | padoff = sv->op_targ; | |
2590 | op_free(sv); | |
2591 | sv = Nullop; | |
2592 | } | |
79072805 | 2593 | else |
463ee0b2 | 2594 | croak("Can't use %s for loop variable", op_name[sv->op_type]); |
79072805 LW |
2595 | } |
2596 | else { | |
2597 | sv = newGVOP(OP_GV, 0, defgv); | |
2598 | } | |
2599 | loop = (LOOP*)list(convert(OP_ENTERITER, 0, | |
a0d0e21e LW |
2600 | append_elem(OP_LIST, mod(force_list(expr), OP_GREPSTART), |
2601 | scalar(sv)))); | |
85e6fe83 LW |
2602 | assert(!loop->op_next); |
2603 | Renew(loop, 1, LOOP); | |
2604 | loop->op_targ = padoff; | |
2605 | return newSTATEOP(0, label, newWHILEOP(flags, 1, loop, | |
2606 | newOP(OP_ITER, 0), block, cont)); | |
79072805 LW |
2607 | } |
2608 | ||
8990e307 LW |
2609 | OP* |
2610 | newLOOPEX(type, label) | |
2611 | I32 type; | |
2612 | OP* label; | |
2613 | { | |
2614 | OP *op; | |
2615 | if (type != OP_GOTO || label->op_type == OP_CONST) { | |
a0d0e21e LW |
2616 | op = newPVOP(type, 0, savepv( |
2617 | label->op_type == OP_CONST | |
2618 | ? SvPVx(((SVOP*)label)->op_sv, na) | |
2619 | : "" )); | |
8990e307 LW |
2620 | op_free(label); |
2621 | } | |
2622 | else { | |
a0d0e21e LW |
2623 | if (label->op_type == OP_ENTERSUB) |
2624 | label = newUNOP(OP_REFGEN, 0, mod(label, OP_REFGEN)); | |
8990e307 LW |
2625 | op = newUNOP(type, OPf_STACKED, label); |
2626 | } | |
85e6fe83 | 2627 | hints |= HINT_BLOCK_SCOPE; |
8990e307 LW |
2628 | return op; |
2629 | } | |
2630 | ||
79072805 | 2631 | void |
85e6fe83 | 2632 | cv_undef(cv) |
79072805 LW |
2633 | CV *cv; |
2634 | { | |
a0d0e21e LW |
2635 | if (!CvXSUB(cv) && CvROOT(cv)) { |
2636 | if (CvDEPTH(cv)) | |
2637 | croak("Can't undef active subroutine"); | |
8990e307 | 2638 | ENTER; |
a0d0e21e LW |
2639 | |
2640 | SAVESPTR(curpad); | |
2641 | curpad = 0; | |
2642 | ||
4aa0a1f7 | 2643 | if (!(SvFLAGS(cv) & SVpcv_CLONED)) |
748a9306 | 2644 | op_free(CvROOT(cv)); |
79072805 | 2645 | CvROOT(cv) = Nullop; |
8990e307 | 2646 | LEAVE; |
79072805 | 2647 | } |
8e07c86e AD |
2648 | SvREFCNT_dec(CvGV(cv)); |
2649 | CvGV(cv) = Nullgv; | |
2650 | SvREFCNT_dec(CvOUTSIDE(cv)); | |
2651 | CvOUTSIDE(cv) = Nullcv; | |
2652 | if (CvPADLIST(cv)) { | |
2653 | I32 i = AvFILL(CvPADLIST(cv)); | |
2654 | while (i >= 0) { | |
2655 | SV** svp = av_fetch(CvPADLIST(cv), i--, FALSE); | |
2656 | if (svp) | |
2657 | SvREFCNT_dec(*svp); | |
2658 | } | |
2659 | SvREFCNT_dec((SV*)CvPADLIST(cv)); | |
2660 | CvPADLIST(cv) = Nullav; | |
2661 | } | |
79072805 LW |
2662 | } |
2663 | ||
a0d0e21e | 2664 | CV * |
748a9306 LW |
2665 | cv_clone(proto) |
2666 | CV* proto; | |
2667 | { | |
2668 | AV* av; | |
2669 | I32 ix; | |
2670 | AV* protopadlist = CvPADLIST(proto); | |
2671 | AV* protopad_name = (AV*)*av_fetch(protopadlist, 0, FALSE); | |
2672 | AV* protopad = (AV*)*av_fetch(protopadlist, 1, FALSE); | |
2673 | SV** svp = AvARRAY(protopad); | |
2674 | AV* comppadlist; | |
2675 | CV* cv; | |
2676 | ||
2677 | ENTER; | |
2678 | SAVESPTR(curpad); | |
2679 | SAVESPTR(comppad); | |
2680 | SAVESPTR(compcv); | |
2681 | ||
2682 | cv = compcv = (CV*)NEWSV(1104,0); | |
2683 | sv_upgrade((SV *)cv, SVt_PVCV); | |
2684 | SvFLAGS(cv) |= SVpcv_CLONED; | |
2685 | ||
2686 | CvFILEGV(cv) = CvFILEGV(proto); | |
2687 | CvGV(cv) = SvREFCNT_inc(CvGV(proto)); | |
2688 | CvSTASH(cv) = CvSTASH(proto); | |
2689 | CvROOT(cv) = CvROOT(proto); | |
2690 | CvSTART(cv) = CvSTART(proto); | |
e9a444f0 LW |
2691 | if (CvOUTSIDE(proto)) |
2692 | CvOUTSIDE(cv) = (CV*)SvREFCNT_inc((SV*)CvOUTSIDE(proto)); | |
748a9306 LW |
2693 | |
2694 | comppad = newAV(); | |
2695 | ||
2696 | comppadlist = newAV(); | |
2697 | AvREAL_off(comppadlist); | |
2698 | av_store(comppadlist, 0, SvREFCNT_inc((SV*)protopad_name)); | |
b355b4e0 | 2699 | av_store(comppadlist, 1, (SV*)comppad); |
748a9306 LW |
2700 | CvPADLIST(cv) = comppadlist; |
2701 | av_extend(comppad, AvFILL(protopad)); | |
2702 | curpad = AvARRAY(comppad); | |
2703 | ||
2704 | av = newAV(); /* will be @_ */ | |
2705 | av_extend(av, 0); | |
2706 | av_store(comppad, 0, (SV*)av); | |
2707 | AvFLAGS(av) = AVf_REIFY; | |
2708 | ||
2709 | svp = AvARRAY(protopad_name); | |
2710 | for ( ix = AvFILL(protopad); ix > 0; ix--) { | |
2711 | SV *sv; | |
2712 | if (svp[ix] != &sv_undef) { | |
2713 | char *name = SvPVX(svp[ix]); /* XXX */ | |
2714 | if (SvFLAGS(svp[ix]) & SVf_FAKE) { /* lexical from outside? */ | |
2715 | I32 off = pad_findlex(name,ix,curcop->cop_seq, CvOUTSIDE(proto), cxstack_ix); | |
2716 | if (off != ix) | |
2717 | croak("panic: cv_clone: %s", name); | |
2718 | } | |
2719 | else { /* our own lexical */ | |
2720 | if (*name == '@') | |
2721 | av_store(comppad, ix, sv = (SV*)newAV()); | |
2722 | else if (*name == '%') | |
2723 | av_store(comppad, ix, sv = (SV*)newHV()); | |
2724 | else | |
2725 | av_store(comppad, ix, sv = NEWSV(0,0)); | |
2726 | SvPADMY_on(sv); | |
2727 | } | |
2728 | } | |
2729 | else { | |
2730 | av_store(comppad, ix, sv = NEWSV(0,0)); | |
2731 | SvPADTMP_on(sv); | |
2732 | } | |
2733 | } | |
2734 | ||
2735 | LEAVE; | |
2736 | return cv; | |
2737 | } | |
2738 | ||
2739 | CV * | |
79072805 LW |
2740 | newSUB(floor,op,block) |
2741 | I32 floor; | |
2742 | OP *op; | |
2743 | OP *block; | |
2744 | { | |
2745 | register CV *cv; | |
a0d0e21e LW |
2746 | char *name = op ? SvPVx(cSVOP->op_sv, na) : "__ANON__"; |
2747 | GV *gv = gv_fetchpv(name, GV_ADDMULTI, SVt_PVCV); | |
79072805 | 2748 | AV* av; |
8990e307 | 2749 | char *s; |
a0d0e21e | 2750 | I32 ix; |
79072805 | 2751 | |
a0d0e21e LW |
2752 | if (op) |
2753 | sub_generation++; | |
2754 | if (cv = GvCV(gv)) { | |
2755 | if (GvCVGEN(gv)) | |
2756 | cv = 0; /* just a cached method */ | |
748a9306 LW |
2757 | else if (CvROOT(cv) || CvXSUB(cv) || GvFLAGS(gv) & GVf_IMPORTED) { |
2758 | if (dowarn) { /* already defined (or promised)? */ | |
79072805 LW |
2759 | line_t oldline = curcop->cop_line; |
2760 | ||
2761 | curcop->cop_line = copline; | |
2762 | warn("Subroutine %s redefined",name); | |
2763 | curcop->cop_line = oldline; | |
2764 | } | |
8990e307 | 2765 | SvREFCNT_dec(cv); |
a0d0e21e | 2766 | cv = 0; |
79072805 LW |
2767 | } |
2768 | } | |
a0d0e21e | 2769 | if (cv) { /* must reuse cv if autoloaded */ |
748a9306 LW |
2770 | if (CvGV(cv)) { |
2771 | assert(SvREFCNT(CvGV(cv)) > 1); | |
2772 | SvREFCNT_dec(CvGV(cv)); | |
2773 | } | |
2774 | CvOUTSIDE(cv) = CvOUTSIDE(compcv); | |
e9a444f0 | 2775 | CvOUTSIDE(compcv) = 0; |
748a9306 | 2776 | CvPADLIST(cv) = CvPADLIST(compcv); |
4aa0a1f7 | 2777 | CvPADLIST(compcv) = 0; |
748a9306 | 2778 | SvREFCNT_dec(compcv); |
a0d0e21e LW |
2779 | } |
2780 | else { | |
748a9306 | 2781 | cv = compcv; |
a0d0e21e | 2782 | } |
79072805 | 2783 | GvCV(gv) = cv; |
463ee0b2 | 2784 | GvCVGEN(gv) = 0; |
79072805 | 2785 | CvFILEGV(cv) = curcop->cop_filegv; |
8990e307 LW |
2786 | CvGV(cv) = SvREFCNT_inc(gv); |
2787 | CvSTASH(cv) = curstash; | |
2788 | ||
a0d0e21e LW |
2789 | if (!block) { |
2790 | CvROOT(cv) = 0; | |
2791 | op_free(op); | |
2792 | copline = NOLINE; | |
2793 | LEAVE_SCOPE(floor); | |
2794 | return cv; | |
2795 | } | |
2796 | ||
2797 | av = newAV(); /* Will be @_ */ | |
2798 | av_extend(av, 0); | |
8990e307 | 2799 | av_store(comppad, 0, (SV*)av); |
a0d0e21e LW |
2800 | AvFLAGS(av) = AVf_REIFY; |
2801 | ||
2802 | for (ix = AvFILL(comppad); ix > 0; ix--) { | |
2803 | if (!SvPADMY(curpad[ix])) | |
2804 | SvPADTMP_on(curpad[ix]); | |
2805 | } | |
79072805 | 2806 | |
8990e307 LW |
2807 | if (AvFILL(comppad_name) < AvFILL(comppad)) |
2808 | av_store(comppad_name, AvFILL(comppad), Nullsv); | |
79072805 | 2809 | |
a0d0e21e | 2810 | CvROOT(cv) = newUNOP(OP_LEAVESUB, 0, scalarseq(block)); |
79072805 LW |
2811 | CvSTART(cv) = LINKLIST(CvROOT(cv)); |
2812 | CvROOT(cv)->op_next = 0; | |
2813 | peep(CvSTART(cv)); | |
8990e307 LW |
2814 | if (s = strrchr(name,':')) |
2815 | s++; | |
2816 | else | |
2817 | s = name; | |
2818 | if (strEQ(s, "BEGIN")) { | |
2819 | line_t oldline = compiling.cop_line; | |
93a17b20 | 2820 | |
8990e307 LW |
2821 | ENTER; |
2822 | SAVESPTR(compiling.cop_filegv); | |
2823 | SAVEI32(perldb); | |
93a17b20 LW |
2824 | if (!beginav) |
2825 | beginav = newAV(); | |
85e6fe83 | 2826 | av_push(beginav, (SV *)cv); |
93a17b20 LW |
2827 | DEBUG_x( dump_sub(gv) ); |
2828 | rs = nrs; | |
2829 | rslen = nrslen; | |
2830 | rschar = nrschar; | |
2831 | rspara = (nrslen == 2); | |
8990e307 | 2832 | GvCV(gv) = 0; |
93a17b20 | 2833 | calllist(beginav); |
93a17b20 LW |
2834 | rs = "\n"; |
2835 | rslen = 1; | |
2836 | rschar = '\n'; | |
2837 | rspara = 0; | |
93a17b20 | 2838 | curcop = &compiling; |
8990e307 LW |
2839 | curcop->cop_line = oldline; /* might have recursed to yylex */ |
2840 | LEAVE; | |
93a17b20 | 2841 | } |
8990e307 | 2842 | else if (strEQ(s, "END")) { |
93a17b20 LW |
2843 | if (!endav) |
2844 | endav = newAV(); | |
2845 | av_unshift(endav, 1); | |
8990e307 | 2846 | av_store(endav, 0, SvREFCNT_inc(cv)); |
93a17b20 | 2847 | } |
8990e307 | 2848 | if (perldb && curstash != debstash) { |
79072805 | 2849 | SV *sv; |
8990e307 | 2850 | SV *tmpstr = sv_newmortal(); |
79072805 | 2851 | |
a0d0e21e | 2852 | sprintf(buf,"%s:%ld",SvPVX(GvSV(curcop->cop_filegv)), (long)subline); |
79072805 LW |
2853 | sv = newSVpv(buf,0); |
2854 | sv_catpv(sv,"-"); | |
2855 | sprintf(buf,"%ld",(long)curcop->cop_line); | |
2856 | sv_catpv(sv,buf); | |
2857 | gv_efullname(tmpstr,gv); | |
463ee0b2 | 2858 | hv_store(GvHV(DBsub), SvPVX(tmpstr), SvCUR(tmpstr), sv, 0); |
79072805 LW |
2859 | } |
2860 | op_free(op); | |
2861 | copline = NOLINE; | |
8990e307 | 2862 | LEAVE_SCOPE(floor); |
748a9306 | 2863 | if (!op) { |
a0d0e21e | 2864 | GvCV(gv) = 0; /* Will remember in SVOP instead. */ |
748a9306 LW |
2865 | SvFLAGS(cv) |= SVpcv_ANON; |
2866 | } | |
a0d0e21e | 2867 | return cv; |
79072805 LW |
2868 | } |
2869 | ||
a0d0e21e LW |
2870 | #ifdef DEPRECATED |
2871 | CV * | |
463ee0b2 | 2872 | newXSUB(name, ix, subaddr, filename) |
79072805 LW |
2873 | char *name; |
2874 | I32 ix; | |
2875 | I32 (*subaddr)(); | |
2876 | char *filename; | |
2877 | { | |
a0d0e21e LW |
2878 | CV* cv = newXS(name, (void(*)())subaddr, filename); |
2879 | CvOLDSTYLE(cv) = TRUE; | |
2880 | CvXSUBANY(cv).any_i32 = ix; | |
2881 | return cv; | |
2882 | } | |
2883 | #endif | |
2884 | ||
2885 | CV * | |
2886 | newXS(name, subaddr, filename) | |
2887 | char *name; | |
2888 | void (*subaddr) _((CV*)); | |
2889 | char *filename; | |
2890 | { | |
79072805 | 2891 | register CV *cv; |
a0d0e21e | 2892 | GV *gv = gv_fetchpv((name ? name : "__ANON__"), GV_ADDMULTI, SVt_PVCV); |
8990e307 | 2893 | char *s; |
79072805 | 2894 | |
a0d0e21e LW |
2895 | if (name) |
2896 | sub_generation++; | |
2897 | if (cv = GvCV(gv)) { | |
2898 | if (GvCVGEN(gv)) | |
2899 | cv = 0; /* just a cached method */ | |
748a9306 | 2900 | else if (CvROOT(cv) || CvXSUB(cv)) { /* already defined? */ |
a0d0e21e LW |
2901 | if (dowarn) { |
2902 | line_t oldline = curcop->cop_line; | |
2903 | ||
2904 | curcop->cop_line = copline; | |
2905 | warn("Subroutine %s redefined",name); | |
2906 | curcop->cop_line = oldline; | |
2907 | } | |
2908 | SvREFCNT_dec(cv); | |
2909 | cv = 0; | |
79072805 | 2910 | } |
79072805 | 2911 | } |
a0d0e21e LW |
2912 | if (cv) { /* must reuse cv if autoloaded */ |
2913 | assert(SvREFCNT(CvGV(cv)) > 1); | |
2914 | SvREFCNT_dec(CvGV(cv)); | |
2915 | } | |
2916 | else { | |
2917 | cv = (CV*)NEWSV(1105,0); | |
2918 | sv_upgrade((SV *)cv, SVt_PVCV); | |
2919 | } | |
79072805 | 2920 | GvCV(gv) = cv; |
8990e307 | 2921 | CvGV(cv) = SvREFCNT_inc(gv); |
463ee0b2 | 2922 | GvCVGEN(gv) = 0; |
79072805 | 2923 | CvFILEGV(cv) = gv_fetchfile(filename); |
a0d0e21e LW |
2924 | CvXSUB(cv) = subaddr; |
2925 | if (!name) | |
2926 | s = "__ANON__"; | |
2927 | else if (s = strrchr(name,':')) | |
8990e307 LW |
2928 | s++; |
2929 | else | |
2930 | s = name; | |
2931 | if (strEQ(s, "BEGIN")) { | |
93a17b20 LW |
2932 | if (!beginav) |
2933 | beginav = newAV(); | |
8990e307 | 2934 | av_push(beginav, SvREFCNT_inc(gv)); |
93a17b20 | 2935 | } |
8990e307 | 2936 | else if (strEQ(s, "END")) { |
93a17b20 LW |
2937 | if (!endav) |
2938 | endav = newAV(); | |
2939 | av_unshift(endav, 1); | |
8990e307 | 2940 | av_store(endav, 0, SvREFCNT_inc(gv)); |
93a17b20 | 2941 | } |
748a9306 | 2942 | if (!name) { |
a0d0e21e | 2943 | GvCV(gv) = 0; /* Will remember elsewhere instead. */ |
748a9306 LW |
2944 | SvFLAGS(cv) |= SVpcv_ANON; |
2945 | } | |
a0d0e21e | 2946 | return cv; |
79072805 LW |
2947 | } |
2948 | ||
2949 | void | |
2950 | newFORM(floor,op,block) | |
2951 | I32 floor; | |
2952 | OP *op; | |
2953 | OP *block; | |
2954 | { | |
2955 | register CV *cv; | |
2956 | char *name; | |
2957 | GV *gv; | |
2958 | AV* av; | |
a0d0e21e | 2959 | I32 ix; |
79072805 LW |
2960 | |
2961 | if (op) | |
463ee0b2 | 2962 | name = SvPVx(cSVOP->op_sv, na); |
79072805 LW |
2963 | else |
2964 | name = "STDOUT"; | |
85e6fe83 | 2965 | gv = gv_fetchpv(name,TRUE, SVt_PVFM); |
a0d0e21e | 2966 | SvMULTI_on(gv); |
79072805 LW |
2967 | if (cv = GvFORM(gv)) { |
2968 | if (dowarn) { | |
2969 | line_t oldline = curcop->cop_line; | |
2970 | ||
2971 | curcop->cop_line = copline; | |
2972 | warn("Format %s redefined",name); | |
2973 | curcop->cop_line = oldline; | |
2974 | } | |
8990e307 | 2975 | SvREFCNT_dec(cv); |
79072805 | 2976 | } |
748a9306 | 2977 | cv = compcv; |
79072805 | 2978 | GvFORM(gv) = cv; |
8990e307 | 2979 | CvGV(cv) = SvREFCNT_inc(gv); |
79072805 LW |
2980 | CvFILEGV(cv) = curcop->cop_filegv; |
2981 | ||
a0d0e21e LW |
2982 | for (ix = AvFILL(comppad); ix > 0; ix--) { |
2983 | if (!SvPADMY(curpad[ix])) | |
2984 | SvPADTMP_on(curpad[ix]); | |
2985 | } | |
2986 | ||
79072805 LW |
2987 | CvROOT(cv) = newUNOP(OP_LEAVEWRITE, 0, scalarseq(block)); |
2988 | CvSTART(cv) = LINKLIST(CvROOT(cv)); | |
2989 | CvROOT(cv)->op_next = 0; | |
2990 | peep(CvSTART(cv)); | |
79072805 LW |
2991 | FmLINES(cv) = 0; |
2992 | op_free(op); | |
2993 | copline = NOLINE; | |
8990e307 | 2994 | LEAVE_SCOPE(floor); |
79072805 LW |
2995 | } |
2996 | ||
2997 | OP * | |
2998 | newMETHOD(ref,name) | |
2999 | OP *ref; | |
3000 | OP *name; | |
3001 | { | |
3002 | LOGOP* mop; | |
3003 | Newz(1101, mop, 1, LOGOP); | |
3004 | mop->op_type = OP_METHOD; | |
3005 | mop->op_ppaddr = ppaddr[OP_METHOD]; | |
3006 | mop->op_first = scalar(ref); | |
3007 | mop->op_flags |= OPf_KIDS; | |
3008 | mop->op_private = 1; | |
3009 | mop->op_other = LINKLIST(name); | |
ed6116ce | 3010 | mop->op_targ = pad_alloc(OP_METHOD, SVs_PADTMP); |
79072805 LW |
3011 | mop->op_next = LINKLIST(ref); |
3012 | ref->op_next = (OP*)mop; | |
8990e307 | 3013 | return scalar((OP*)mop); |
79072805 LW |
3014 | } |
3015 | ||
3016 | OP * | |
3017 | newANONLIST(op) | |
3018 | OP* op; | |
3019 | { | |
93a17b20 | 3020 | return newUNOP(OP_REFGEN, 0, |
a0d0e21e | 3021 | mod(list(convert(OP_ANONLIST, 0, op)), OP_REFGEN)); |
79072805 LW |
3022 | } |
3023 | ||
3024 | OP * | |
3025 | newANONHASH(op) | |
3026 | OP* op; | |
3027 | { | |
93a17b20 | 3028 | return newUNOP(OP_REFGEN, 0, |
a0d0e21e LW |
3029 | mod(list(convert(OP_ANONHASH, 0, op)), OP_REFGEN)); |
3030 | } | |
3031 | ||
3032 | OP * | |
3033 | newANONSUB(floor, block) | |
3034 | I32 floor; | |
3035 | OP *block; | |
3036 | { | |
3037 | return newUNOP(OP_REFGEN, 0, | |
3038 | newSVOP(OP_ANONCODE, 0, (SV*)newSUB(floor, 0, block))); | |
79072805 LW |
3039 | } |
3040 | ||
3041 | OP * | |
3042 | oopsAV(o) | |
3043 | OP *o; | |
3044 | { | |
ed6116ce LW |
3045 | switch (o->op_type) { |
3046 | case OP_PADSV: | |
3047 | o->op_type = OP_PADAV; | |
3048 | o->op_ppaddr = ppaddr[OP_PADAV]; | |
3049 | return ref(newUNOP(OP_RV2AV, 0, scalar(o)), OP_RV2AV); | |
3050 | ||
3051 | case OP_RV2SV: | |
79072805 LW |
3052 | o->op_type = OP_RV2AV; |
3053 | o->op_ppaddr = ppaddr[OP_RV2AV]; | |
3054 | ref(o, OP_RV2AV); | |
ed6116ce LW |
3055 | break; |
3056 | ||
3057 | default: | |
79072805 | 3058 | warn("oops: oopsAV"); |
ed6116ce LW |
3059 | break; |
3060 | } | |
79072805 LW |
3061 | return o; |
3062 | } | |
3063 | ||
3064 | OP * | |
3065 | oopsHV(o) | |
3066 | OP *o; | |
3067 | { | |
ed6116ce LW |
3068 | switch (o->op_type) { |
3069 | case OP_PADSV: | |
3070 | case OP_PADAV: | |
3071 | o->op_type = OP_PADHV; | |
3072 | o->op_ppaddr = ppaddr[OP_PADHV]; | |
3073 | return ref(newUNOP(OP_RV2HV, 0, scalar(o)), OP_RV2HV); | |
3074 | ||
3075 | case OP_RV2SV: | |
3076 | case OP_RV2AV: | |
79072805 LW |
3077 | o->op_type = OP_RV2HV; |
3078 | o->op_ppaddr = ppaddr[OP_RV2HV]; | |
3079 | ref(o, OP_RV2HV); | |
ed6116ce LW |
3080 | break; |
3081 | ||
3082 | default: | |
79072805 | 3083 | warn("oops: oopsHV"); |
ed6116ce LW |
3084 | break; |
3085 | } | |
79072805 LW |
3086 | return o; |
3087 | } | |
3088 | ||
3089 | OP * | |
3090 | newAVREF(o) | |
3091 | OP *o; | |
3092 | { | |
ed6116ce LW |
3093 | if (o->op_type == OP_PADANY) { |
3094 | o->op_type = OP_PADAV; | |
3095 | o->op_ppaddr = ppaddr[OP_PADAV]; | |
93a17b20 | 3096 | return o; |
ed6116ce | 3097 | } |
79072805 LW |
3098 | return newUNOP(OP_RV2AV, 0, scalar(o)); |
3099 | } | |
3100 | ||
3101 | OP * | |
a0d0e21e LW |
3102 | newGVREF(type,o) |
3103 | I32 type; | |
79072805 LW |
3104 | OP *o; |
3105 | { | |
a0d0e21e LW |
3106 | if (type == OP_MAPSTART) |
3107 | return newUNOP(OP_NULL, 0, o); | |
748a9306 | 3108 | return ref(newUNOP(OP_RV2GV, OPf_REF, o), type); |
79072805 LW |
3109 | } |
3110 | ||
3111 | OP * | |
3112 | newHVREF(o) | |
3113 | OP *o; | |
3114 | { | |
ed6116ce LW |
3115 | if (o->op_type == OP_PADANY) { |
3116 | o->op_type = OP_PADHV; | |
3117 | o->op_ppaddr = ppaddr[OP_PADHV]; | |
93a17b20 | 3118 | return o; |
ed6116ce | 3119 | } |
79072805 LW |
3120 | return newUNOP(OP_RV2HV, 0, scalar(o)); |
3121 | } | |
3122 | ||
3123 | OP * | |
3124 | oopsCV(o) | |
3125 | OP *o; | |
3126 | { | |
463ee0b2 | 3127 | croak("NOT IMPL LINE %d",__LINE__); |
79072805 LW |
3128 | /* STUB */ |
3129 | return o; | |
3130 | } | |
3131 | ||
3132 | OP * | |
3133 | newCVREF(o) | |
3134 | OP *o; | |
3135 | { | |
3136 | return newUNOP(OP_RV2CV, 0, scalar(o)); | |
3137 | } | |
3138 | ||
3139 | OP * | |
3140 | newSVREF(o) | |
3141 | OP *o; | |
3142 | { | |
ed6116ce LW |
3143 | if (o->op_type == OP_PADANY) { |
3144 | o->op_type = OP_PADSV; | |
3145 | o->op_ppaddr = ppaddr[OP_PADSV]; | |
93a17b20 | 3146 | return o; |
ed6116ce | 3147 | } |
79072805 LW |
3148 | return newUNOP(OP_RV2SV, 0, scalar(o)); |
3149 | } | |
3150 | ||
3151 | /* Check routines. */ | |
3152 | ||
3153 | OP * | |
79072805 LW |
3154 | ck_concat(op) |
3155 | OP *op; | |
3156 | { | |
3157 | if (cUNOP->op_first->op_type == OP_CONCAT) | |
3158 | op->op_flags |= OPf_STACKED; | |
3159 | return op; | |
3160 | } | |
3161 | ||
3162 | OP * | |
a0d0e21e | 3163 | ck_spair(op) |
79072805 LW |
3164 | OP *op; |
3165 | { | |
3166 | if (op->op_flags & OPf_KIDS) { | |
3167 | OP* newop; | |
a0d0e21e | 3168 | OP* kid; |
463ee0b2 | 3169 | op = modkids(ck_fun(op), op->op_type); |
a0d0e21e LW |
3170 | kid = cUNOP->op_first; |
3171 | newop = kUNOP->op_first->op_sibling; | |
3172 | if (newop && | |
3173 | (newop->op_sibling || | |
3174 | !(opargs[newop->op_type] & OA_RETSCALAR) || | |
3175 | newop->op_type == OP_PADAV || newop->op_type == OP_PADHV || | |
3176 | newop->op_type == OP_RV2AV || newop->op_type == OP_RV2HV)) { | |
3177 | ||
79072805 | 3178 | return op; |
a0d0e21e LW |
3179 | } |
3180 | op_free(kUNOP->op_first); | |
3181 | kUNOP->op_first = newop; | |
3182 | } | |
3183 | op->op_ppaddr = ppaddr[++op->op_type]; | |
3184 | return ck_fun(op); | |
3185 | } | |
3186 | ||
3187 | OP * | |
3188 | ck_delete(op) | |
3189 | OP *op; | |
3190 | { | |
3191 | op = ck_fun(op); | |
3192 | if (op->op_flags & OPf_KIDS) { | |
3193 | OP *kid = cUNOP->op_first; | |
3194 | if (kid->op_type != OP_HELEM) | |
3195 | croak("%s argument is not a HASH element", op_name[op->op_type]); | |
3196 | null(kid); | |
79072805 | 3197 | } |
79072805 LW |
3198 | return op; |
3199 | } | |
3200 | ||
3201 | OP * | |
3202 | ck_eof(op) | |
3203 | OP *op; | |
3204 | { | |
3205 | I32 type = op->op_type; | |
3206 | ||
8990e307 LW |
3207 | if (op->op_flags & OPf_KIDS) { |
3208 | if (cLISTOP->op_first->op_type == OP_STUB) { | |
3209 | op_free(op); | |
3210 | op = newUNOP(type, OPf_SPECIAL, | |
85e6fe83 | 3211 | newGVOP(OP_GV, 0, gv_fetchpv("main'ARGV", TRUE, SVt_PVAV))); |
8990e307 | 3212 | } |
79072805 | 3213 | return ck_fun(op); |
79072805 LW |
3214 | } |
3215 | return op; | |
3216 | } | |
3217 | ||
3218 | OP * | |
3219 | ck_eval(op) | |
3220 | OP *op; | |
3221 | { | |
85e6fe83 | 3222 | hints |= HINT_BLOCK_SCOPE; |
79072805 LW |
3223 | if (op->op_flags & OPf_KIDS) { |
3224 | SVOP *kid = (SVOP*)cUNOP->op_first; | |
3225 | ||
93a17b20 LW |
3226 | if (!kid) { |
3227 | op->op_flags &= ~OPf_KIDS; | |
8990e307 | 3228 | null(op); |
79072805 LW |
3229 | } |
3230 | else if (kid->op_type == OP_LINESEQ) { | |
3231 | LOGOP *enter; | |
3232 | ||
3233 | kid->op_next = op->op_next; | |
3234 | cUNOP->op_first = 0; | |
3235 | op_free(op); | |
3236 | ||
3237 | Newz(1101, enter, 1, LOGOP); | |
3238 | enter->op_type = OP_ENTERTRY; | |
3239 | enter->op_ppaddr = ppaddr[OP_ENTERTRY]; | |
3240 | enter->op_private = 0; | |
3241 | ||
3242 | /* establish postfix order */ | |
3243 | enter->op_next = (OP*)enter; | |
3244 | ||
463ee0b2 | 3245 | op = prepend_elem(OP_LINESEQ, (OP*)enter, (OP*)kid); |
79072805 LW |
3246 | op->op_type = OP_LEAVETRY; |
3247 | op->op_ppaddr = ppaddr[OP_LEAVETRY]; | |
3248 | enter->op_other = op; | |
3249 | return op; | |
3250 | } | |
3251 | } | |
3252 | else { | |
3253 | op_free(op); | |
3254 | op = newUNOP(OP_ENTEREVAL, 0, newSVREF(newGVOP(OP_GV, 0, defgv))); | |
3255 | } | |
a0d0e21e | 3256 | op->op_targ = (PADOFFSET)hints; |
79072805 LW |
3257 | return op; |
3258 | } | |
3259 | ||
3260 | OP * | |
3261 | ck_exec(op) | |
3262 | OP *op; | |
3263 | { | |
3264 | OP *kid; | |
79072805 | 3265 | if (op->op_flags & OPf_STACKED) { |
463ee0b2 | 3266 | op = ck_fun(op); |
79072805 | 3267 | kid = cUNOP->op_first->op_sibling; |
8990e307 LW |
3268 | if (kid->op_type == OP_RV2GV) |
3269 | null(kid); | |
79072805 | 3270 | } |
463ee0b2 LW |
3271 | else |
3272 | op = listkids(op); | |
79072805 LW |
3273 | return op; |
3274 | } | |
3275 | ||
3276 | OP * | |
3277 | ck_gvconst(o) | |
3278 | register OP *o; | |
3279 | { | |
3280 | o = fold_constants(o); | |
3281 | if (o->op_type == OP_CONST) | |
3282 | o->op_type = OP_GV; | |
3283 | return o; | |
3284 | } | |
3285 | ||
3286 | OP * | |
3287 | ck_rvconst(op) | |
3288 | register OP *op; | |
3289 | { | |
3290 | SVOP *kid = (SVOP*)cUNOP->op_first; | |
85e6fe83 | 3291 | |
a0d0e21e | 3292 | op->op_private = (hints & HINT_STRICT_REFS); |
79072805 | 3293 | if (kid->op_type == OP_CONST) { |
748a9306 | 3294 | int iscv = (op->op_type==OP_RV2CV)*2; |
a0d0e21e | 3295 | GV *gv = 0; |
79072805 | 3296 | kid->op_type = OP_GV; |
a0d0e21e | 3297 | for (gv = 0; !gv; iscv++) { |
748a9306 LW |
3298 | /* |
3299 | * This is a little tricky. We only want to add the symbol if we | |
3300 | * didn't add it in the lexer. Otherwise we get duplicate strict | |
3301 | * warnings. But if we didn't add it in the lexer, we must at | |
3302 | * least pretend like we wanted to add it even if it existed before, | |
3303 | * or we get possible typo warnings. OPpCONST_ENTERED says | |
3304 | * whether the lexer already added THIS instance of this symbol. | |
3305 | */ | |
a0d0e21e | 3306 | gv = gv_fetchpv(SvPVx(kid->op_sv, na), |
748a9306 | 3307 | iscv | !(kid->op_private & OPpCONST_ENTERED), |
a0d0e21e LW |
3308 | iscv |
3309 | ? SVt_PVCV | |
3310 | : op->op_type == OP_RV2SV | |
3311 | ? SVt_PV | |
3312 | : op->op_type == OP_RV2AV | |
3313 | ? SVt_PVAV | |
3314 | : op->op_type == OP_RV2HV | |
3315 | ? SVt_PVHV | |
3316 | : SVt_PVGV); | |
3317 | } | |
adbc6bb1 | 3318 | SvREFCNT_dec(kid->op_sv); |
a0d0e21e | 3319 | kid->op_sv = SvREFCNT_inc(gv); |
79072805 LW |
3320 | } |
3321 | return op; | |
3322 | } | |
3323 | ||
3324 | OP * | |
3325 | ck_formline(op) | |
3326 | OP *op; | |
3327 | { | |
3328 | return ck_fun(op); | |
3329 | } | |
3330 | ||
3331 | OP * | |
3332 | ck_ftst(op) | |
3333 | OP *op; | |
3334 | { | |
3335 | I32 type = op->op_type; | |
3336 | ||
a0d0e21e | 3337 | if (op->op_flags & OPf_REF) |
79072805 LW |
3338 | return op; |
3339 | ||
3340 | if (op->op_flags & OPf_KIDS) { | |
3341 | SVOP *kid = (SVOP*)cUNOP->op_first; | |
3342 | ||
3343 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
a0d0e21e | 3344 | OP *newop = newGVOP(type, OPf_REF, |
85e6fe83 | 3345 | gv_fetchpv(SvPVx(kid->op_sv, na), TRUE, SVt_PVIO)); |
79072805 LW |
3346 | op_free(op); |
3347 | return newop; | |
3348 | } | |
3349 | } | |
3350 | else { | |
3351 | op_free(op); | |
3352 | if (type == OP_FTTTY) | |
a0d0e21e | 3353 | return newGVOP(type, OPf_REF, gv_fetchpv("main'STDIN", TRUE, |
85e6fe83 | 3354 | SVt_PVIO)); |
79072805 LW |
3355 | else |
3356 | return newUNOP(type, 0, newSVREF(newGVOP(OP_GV, 0, defgv))); | |
3357 | } | |
3358 | return op; | |
3359 | } | |
3360 | ||
3361 | OP * | |
3362 | ck_fun(op) | |
3363 | OP *op; | |
3364 | { | |
3365 | register OP *kid; | |
3366 | OP **tokid; | |
3367 | OP *sibl; | |
3368 | I32 numargs = 0; | |
a0d0e21e LW |
3369 | int type = op->op_type; |
3370 | register I32 oa = opargs[type] >> OASHIFT; | |
79072805 LW |
3371 | |
3372 | if (op->op_flags & OPf_STACKED) { | |
3373 | if ((oa & OA_OPTIONAL) && (oa >> 4) && !((oa >> 4) & OA_OPTIONAL)) | |
3374 | oa &= ~OA_OPTIONAL; | |
3375 | else | |
3376 | return no_fh_allowed(op); | |
3377 | } | |
3378 | ||
3379 | if (op->op_flags & OPf_KIDS) { | |
3380 | tokid = &cLISTOP->op_first; | |
3381 | kid = cLISTOP->op_first; | |
8990e307 LW |
3382 | if (kid->op_type == OP_PUSHMARK || |
3383 | kid->op_type == OP_NULL && kid->op_targ == OP_PUSHMARK) | |
3384 | { | |
79072805 LW |
3385 | tokid = &kid->op_sibling; |
3386 | kid = kid->op_sibling; | |
3387 | } | |
a0d0e21e LW |
3388 | if (!kid && opargs[type] & OA_DEFGV) |
3389 | *tokid = kid = newSVREF(newGVOP(OP_GV, 0, defgv)); | |
79072805 LW |
3390 | |
3391 | while (oa && kid) { | |
3392 | numargs++; | |
3393 | sibl = kid->op_sibling; | |
3394 | switch (oa & 7) { | |
3395 | case OA_SCALAR: | |
3396 | scalar(kid); | |
3397 | break; | |
3398 | case OA_LIST: | |
3399 | if (oa < 16) { | |
3400 | kid = 0; | |
3401 | continue; | |
3402 | } | |
3403 | else | |
3404 | list(kid); | |
3405 | break; | |
3406 | case OA_AVREF: | |
3407 | if (kid->op_type == OP_CONST && | |
3408 | (kid->op_private & OPpCONST_BARE)) { | |
463ee0b2 | 3409 | char *name = SvPVx(((SVOP*)kid)->op_sv, na); |
79072805 | 3410 | OP *newop = newAVREF(newGVOP(OP_GV, 0, |
85e6fe83 | 3411 | gv_fetchpv(name, TRUE, SVt_PVAV) )); |
463ee0b2 LW |
3412 | if (dowarn) |
3413 | warn("Array @%s missing the @ in argument %d of %s()", | |
a0d0e21e | 3414 | name, numargs, op_name[type]); |
79072805 LW |
3415 | op_free(kid); |
3416 | kid = newop; | |
3417 | kid->op_sibling = sibl; | |
3418 | *tokid = kid; | |
3419 | } | |
8990e307 LW |
3420 | else if (kid->op_type != OP_RV2AV && kid->op_type != OP_PADAV) |
3421 | bad_type(numargs, "array", op, kid); | |
a0d0e21e | 3422 | mod(kid, type); |
79072805 LW |
3423 | break; |
3424 | case OA_HVREF: | |
3425 | if (kid->op_type == OP_CONST && | |
3426 | (kid->op_private & OPpCONST_BARE)) { | |
463ee0b2 | 3427 | char *name = SvPVx(((SVOP*)kid)->op_sv, na); |
79072805 | 3428 | OP *newop = newHVREF(newGVOP(OP_GV, 0, |
85e6fe83 | 3429 | gv_fetchpv(name, TRUE, SVt_PVHV) )); |
463ee0b2 LW |
3430 | if (dowarn) |
3431 | warn("Hash %%%s missing the %% in argument %d of %s()", | |
a0d0e21e | 3432 | name, numargs, op_name[type]); |
79072805 LW |
3433 | op_free(kid); |
3434 | kid = newop; | |
3435 | kid->op_sibling = sibl; | |
3436 | *tokid = kid; | |
3437 | } | |
8990e307 LW |
3438 | else if (kid->op_type != OP_RV2HV && kid->op_type != OP_PADHV) |
3439 | bad_type(numargs, "hash", op, kid); | |
a0d0e21e | 3440 | mod(kid, type); |
79072805 LW |
3441 | break; |
3442 | case OA_CVREF: | |
3443 | { | |
a0d0e21e | 3444 | OP *newop = newUNOP(OP_NULL, 0, kid); |
79072805 LW |
3445 | kid->op_sibling = 0; |
3446 | linklist(kid); | |
3447 | newop->op_next = newop; | |
3448 | kid = newop; | |
3449 | kid->op_sibling = sibl; | |
3450 | *tokid = kid; | |
3451 | } | |
3452 | break; | |
3453 | case OA_FILEREF: | |
3454 | if (kid->op_type != OP_GV) { | |
3455 | if (kid->op_type == OP_CONST && | |
3456 | (kid->op_private & OPpCONST_BARE)) { | |
3457 | OP *newop = newGVOP(OP_GV, 0, | |
85e6fe83 LW |
3458 | gv_fetchpv(SvPVx(((SVOP*)kid)->op_sv, na), TRUE, |
3459 | SVt_PVIO) ); | |
79072805 LW |
3460 | op_free(kid); |
3461 | kid = newop; | |
3462 | } | |
3463 | else { | |
3464 | kid->op_sibling = 0; | |
3465 | kid = newUNOP(OP_RV2GV, 0, scalar(kid)); | |
3466 | } | |
3467 | kid->op_sibling = sibl; | |
3468 | *tokid = kid; | |
3469 | } | |
3470 | scalar(kid); | |
3471 | break; | |
3472 | case OA_SCALARREF: | |
a0d0e21e | 3473 | mod(scalar(kid), type); |
79072805 LW |
3474 | break; |
3475 | } | |
3476 | oa >>= 4; | |
3477 | tokid = &kid->op_sibling; | |
3478 | kid = kid->op_sibling; | |
3479 | } | |
3480 | op->op_private = numargs; | |
3481 | if (kid) | |
3482 | return too_many_arguments(op); | |
3483 | listkids(op); | |
3484 | } | |
a0d0e21e LW |
3485 | else if (opargs[type] & OA_DEFGV) { |
3486 | op_free(op); | |
3487 | return newUNOP(type, 0, newSVREF(newGVOP(OP_GV, 0, defgv))); | |
3488 | } | |
3489 | ||
79072805 LW |
3490 | if (oa) { |
3491 | while (oa & OA_OPTIONAL) | |
3492 | oa >>= 4; | |
3493 | if (oa && oa != OA_LIST) | |
3494 | return too_few_arguments(op); | |
3495 | } | |
3496 | return op; | |
3497 | } | |
3498 | ||
3499 | OP * | |
3500 | ck_glob(op) | |
3501 | OP *op; | |
3502 | { | |
a0d0e21e LW |
3503 | GV *gv = newGVgen("main"); |
3504 | gv_IOadd(gv); | |
79072805 LW |
3505 | append_elem(OP_GLOB, op, newGVOP(OP_GV, 0, gv)); |
3506 | scalarkids(op); | |
a0d0e21e | 3507 | return ck_fun(op); |
79072805 LW |
3508 | } |
3509 | ||
3510 | OP * | |
3511 | ck_grep(op) | |
3512 | OP *op; | |
3513 | { | |
3514 | LOGOP *gwop; | |
3515 | OP *kid; | |
a0d0e21e | 3516 | OPCODE type = op->op_type == OP_GREPSTART ? OP_GREPWHILE : OP_MAPWHILE; |
79072805 | 3517 | |
a0d0e21e LW |
3518 | op->op_ppaddr = ppaddr[OP_GREPSTART]; |
3519 | Newz(1101, gwop, 1, LOGOP); | |
3520 | ||
93a17b20 | 3521 | if (op->op_flags & OPf_STACKED) { |
a0d0e21e | 3522 | OP* k; |
93a17b20 | 3523 | op = ck_sort(op); |
8e07c86e | 3524 | kid = cLISTOP->op_first->op_sibling; |
a0d0e21e LW |
3525 | for (k = cLISTOP->op_first->op_sibling->op_next; k; k = k->op_next) { |
3526 | kid = k; | |
3527 | } | |
3528 | kid->op_next = (OP*)gwop; | |
93a17b20 LW |
3529 | op->op_flags &= ~OPf_STACKED; |
3530 | } | |
a0d0e21e LW |
3531 | kid = cLISTOP->op_first->op_sibling; |
3532 | if (type == OP_MAPWHILE) | |
3533 | list(kid); | |
3534 | else | |
3535 | scalar(kid); | |
79072805 LW |
3536 | op = ck_fun(op); |
3537 | if (error_count) | |
3538 | return op; | |
a0d0e21e | 3539 | kid = cLISTOP->op_first->op_sibling; |
79072805 | 3540 | if (kid->op_type != OP_NULL) |
463ee0b2 | 3541 | croak("panic: ck_grep"); |
79072805 LW |
3542 | kid = kUNOP->op_first; |
3543 | ||
a0d0e21e LW |
3544 | gwop->op_type = type; |
3545 | gwop->op_ppaddr = ppaddr[type]; | |
3546 | gwop->op_first = listkids(op); | |
79072805 LW |
3547 | gwop->op_flags |= OPf_KIDS; |
3548 | gwop->op_private = 1; | |
3549 | gwop->op_other = LINKLIST(kid); | |
a0d0e21e | 3550 | gwop->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 LW |
3551 | kid->op_next = (OP*)gwop; |
3552 | ||
a0d0e21e LW |
3553 | kid = cLISTOP->op_first->op_sibling; |
3554 | if (!kid || !kid->op_sibling) | |
3555 | return too_few_arguments(op); | |
3556 | for (kid = kid->op_sibling; kid; kid = kid->op_sibling) | |
3557 | mod(kid, OP_GREPSTART); | |
3558 | ||
79072805 LW |
3559 | return (OP*)gwop; |
3560 | } | |
3561 | ||
3562 | OP * | |
3563 | ck_index(op) | |
3564 | OP *op; | |
3565 | { | |
3566 | if (op->op_flags & OPf_KIDS) { | |
3567 | OP *kid = cLISTOP->op_first->op_sibling; /* get past pushmark */ | |
3568 | if (kid && kid->op_type == OP_CONST) | |
3569 | fbm_compile(((SVOP*)kid)->op_sv, 0); | |
3570 | } | |
3571 | return ck_fun(op); | |
3572 | } | |
3573 | ||
3574 | OP * | |
3575 | ck_lengthconst(op) | |
3576 | OP *op; | |
3577 | { | |
3578 | /* XXX length optimization goes here */ | |
a0d0e21e | 3579 | return ck_fun(op); |
79072805 LW |
3580 | } |
3581 | ||
3582 | OP * | |
3583 | ck_lfun(op) | |
3584 | OP *op; | |
3585 | { | |
463ee0b2 | 3586 | return modkids(ck_fun(op), op->op_type); |
79072805 LW |
3587 | } |
3588 | ||
3589 | OP * | |
8990e307 LW |
3590 | ck_rfun(op) |
3591 | OP *op; | |
3592 | { | |
3593 | return refkids(ck_fun(op), op->op_type); | |
3594 | } | |
3595 | ||
3596 | OP * | |
79072805 LW |
3597 | ck_listiob(op) |
3598 | OP *op; | |
3599 | { | |
3600 | register OP *kid; | |
3601 | ||
3602 | kid = cLISTOP->op_first; | |
3603 | if (!kid) { | |
8990e307 | 3604 | op = force_list(op); |
79072805 LW |
3605 | kid = cLISTOP->op_first; |
3606 | } | |
3607 | if (kid->op_type == OP_PUSHMARK) | |
3608 | kid = kid->op_sibling; | |
3609 | if (kid && op->op_flags & OPf_STACKED) | |
3610 | kid = kid->op_sibling; | |
3611 | else if (kid && !kid->op_sibling) { /* print HANDLE; */ | |
3612 | if (kid->op_type == OP_CONST && kid->op_private & OPpCONST_BARE) { | |
3613 | op->op_flags |= OPf_STACKED; /* make it a filehandle */ | |
748a9306 | 3614 | kid = newUNOP(OP_RV2GV, OPf_REF, scalar(kid)); |
79072805 LW |
3615 | cLISTOP->op_first->op_sibling = kid; |
3616 | cLISTOP->op_last = kid; | |
3617 | kid = kid->op_sibling; | |
3618 | } | |
3619 | } | |
3620 | ||
3621 | if (!kid) | |
3622 | append_elem(op->op_type, op, newSVREF(newGVOP(OP_GV, 0, defgv)) ); | |
3623 | ||
3624 | return listkids(op); | |
3625 | } | |
3626 | ||
3627 | OP * | |
3628 | ck_match(op) | |
3629 | OP *op; | |
3630 | { | |
3631 | cPMOP->op_pmflags |= PMf_RUNTIME; | |
3632 | return op; | |
3633 | } | |
3634 | ||
3635 | OP * | |
3636 | ck_null(op) | |
3637 | OP *op; | |
3638 | { | |
3639 | return op; | |
3640 | } | |
3641 | ||
3642 | OP * | |
3643 | ck_repeat(op) | |
3644 | OP *op; | |
3645 | { | |
3646 | if (cBINOP->op_first->op_flags & OPf_PARENS) { | |
3647 | op->op_private = OPpREPEAT_DOLIST; | |
8990e307 | 3648 | cBINOP->op_first = force_list(cBINOP->op_first); |
79072805 LW |
3649 | } |
3650 | else | |
3651 | scalar(op); | |
3652 | return op; | |
3653 | } | |
3654 | ||
3655 | OP * | |
8990e307 LW |
3656 | ck_require(op) |
3657 | OP *op; | |
3658 | { | |
a0d0e21e | 3659 | if (op->op_flags & OPf_KIDS) { /* Shall we supply missing .pm? */ |
8990e307 LW |
3660 | SVOP *kid = (SVOP*)cUNOP->op_first; |
3661 | ||
3662 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
8990e307 | 3663 | char *s; |
a0d0e21e LW |
3664 | for (s = SvPVX(kid->op_sv); *s; s++) { |
3665 | if (*s == ':' && s[1] == ':') { | |
3666 | *s = '/'; | |
1aef975c | 3667 | Move(s+2, s+1, strlen(s+2)+1, char); |
a0d0e21e LW |
3668 | --SvCUR(kid->op_sv); |
3669 | } | |
8990e307 | 3670 | } |
a0d0e21e | 3671 | sv_catpvn(kid->op_sv, ".pm", 3); |
8990e307 LW |
3672 | } |
3673 | } | |
3674 | return ck_fun(op); | |
3675 | } | |
3676 | ||
3677 | OP * | |
79072805 LW |
3678 | ck_retarget(op) |
3679 | OP *op; | |
3680 | { | |
463ee0b2 | 3681 | croak("NOT IMPL LINE %d",__LINE__); |
79072805 LW |
3682 | /* STUB */ |
3683 | return op; | |
3684 | } | |
3685 | ||
3686 | OP * | |
3687 | ck_select(op) | |
3688 | OP *op; | |
3689 | { | |
3690 | if (op->op_flags & OPf_KIDS) { | |
3691 | OP *kid = cLISTOP->op_first->op_sibling; /* get past pushmark */ | |
2304df62 | 3692 | if (kid && kid->op_sibling) { |
79072805 LW |
3693 | op->op_type = OP_SSELECT; |
3694 | op->op_ppaddr = ppaddr[OP_SSELECT]; | |
3695 | op = ck_fun(op); | |
3696 | return fold_constants(op); | |
3697 | } | |
3698 | } | |
3699 | return ck_fun(op); | |
3700 | } | |
3701 | ||
3702 | OP * | |
3703 | ck_shift(op) | |
3704 | OP *op; | |
3705 | { | |
3706 | I32 type = op->op_type; | |
3707 | ||
3708 | if (!(op->op_flags & OPf_KIDS)) { | |
3709 | op_free(op); | |
3710 | return newUNOP(type, 0, | |
3711 | scalar(newUNOP(OP_RV2AV, 0, | |
3712 | scalar(newGVOP(OP_GV, 0, | |
85e6fe83 | 3713 | gv_fetchpv((subline ? "_" : "ARGV"), TRUE, SVt_PVAV) ))))); |
79072805 | 3714 | } |
463ee0b2 | 3715 | return scalar(modkids(ck_fun(op), type)); |
79072805 LW |
3716 | } |
3717 | ||
3718 | OP * | |
3719 | ck_sort(op) | |
3720 | OP *op; | |
3721 | { | |
3722 | if (op->op_flags & OPf_STACKED) { | |
3723 | OP *kid = cLISTOP->op_first->op_sibling; /* get past pushmark */ | |
463ee0b2 LW |
3724 | OP *k; |
3725 | kid = kUNOP->op_first; /* get past rv2gv */ | |
79072805 | 3726 | |
463ee0b2 | 3727 | if (kid->op_type == OP_SCOPE || kid->op_type == OP_LEAVE) { |
79072805 | 3728 | linklist(kid); |
463ee0b2 LW |
3729 | if (kid->op_type == OP_SCOPE) { |
3730 | k = kid->op_next; | |
3731 | kid->op_next = 0; | |
79072805 | 3732 | } |
463ee0b2 | 3733 | else if (kid->op_type == OP_LEAVE) { |
748a9306 LW |
3734 | if (op->op_type == OP_SORT) { |
3735 | null(kid); /* wipe out leave */ | |
3736 | kid->op_next = kid; | |
463ee0b2 | 3737 | |
748a9306 LW |
3738 | for (k = kLISTOP->op_first->op_next; k; k = k->op_next) { |
3739 | if (k->op_next == kid) | |
3740 | k->op_next = 0; | |
3741 | } | |
463ee0b2 | 3742 | } |
748a9306 LW |
3743 | else |
3744 | kid->op_next = 0; /* just disconnect the leave */ | |
a0d0e21e | 3745 | k = kLISTOP->op_first; |
463ee0b2 | 3746 | } |
a0d0e21e LW |
3747 | peep(k); |
3748 | ||
463ee0b2 | 3749 | kid = cLISTOP->op_first->op_sibling; /* get past pushmark */ |
8990e307 | 3750 | null(kid); /* wipe out rv2gv */ |
a0d0e21e LW |
3751 | if (op->op_type == OP_SORT) |
3752 | kid->op_next = kid; | |
3753 | else | |
3754 | kid->op_next = k; | |
79072805 LW |
3755 | op->op_flags |= OPf_SPECIAL; |
3756 | } | |
3757 | } | |
3758 | return op; | |
3759 | } | |
3760 | ||
3761 | OP * | |
3762 | ck_split(op) | |
3763 | OP *op; | |
3764 | { | |
3765 | register OP *kid; | |
ed6116ce | 3766 | PMOP* pm; |
79072805 LW |
3767 | |
3768 | if (op->op_flags & OPf_STACKED) | |
3769 | return no_fh_allowed(op); | |
3770 | ||
79072805 | 3771 | kid = cLISTOP->op_first; |
8990e307 | 3772 | if (kid->op_type != OP_NULL) |
463ee0b2 | 3773 | croak("panic: ck_split"); |
8990e307 LW |
3774 | kid = kid->op_sibling; |
3775 | op_free(cLISTOP->op_first); | |
3776 | cLISTOP->op_first = kid; | |
85e6fe83 | 3777 | if (!kid) { |
8990e307 | 3778 | cLISTOP->op_first = kid = newSVOP(OP_CONST, 0, newSVpv(" ", 1)); |
85e6fe83 LW |
3779 | cLISTOP->op_last = kid; /* There was only one element previously */ |
3780 | } | |
79072805 LW |
3781 | |
3782 | if (kid->op_type != OP_MATCH) { | |
3783 | OP *sibl = kid->op_sibling; | |
463ee0b2 | 3784 | kid->op_sibling = 0; |
79072805 LW |
3785 | kid = pmruntime( newPMOP(OP_MATCH, OPf_SPECIAL), kid, Nullop); |
3786 | if (cLISTOP->op_first == cLISTOP->op_last) | |
3787 | cLISTOP->op_last = kid; | |
3788 | cLISTOP->op_first = kid; | |
3789 | kid->op_sibling = sibl; | |
3790 | } | |
ed6116ce LW |
3791 | pm = (PMOP*)kid; |
3792 | if (pm->op_pmshort && !(pm->op_pmflags & PMf_ALL)) { | |
8990e307 | 3793 | SvREFCNT_dec(pm->op_pmshort); /* can't use substring to optimize */ |
ed6116ce LW |
3794 | pm->op_pmshort = 0; |
3795 | } | |
79072805 LW |
3796 | |
3797 | kid->op_type = OP_PUSHRE; | |
3798 | kid->op_ppaddr = ppaddr[OP_PUSHRE]; | |
3799 | scalar(kid); | |
3800 | ||
3801 | if (!kid->op_sibling) | |
3802 | append_elem(OP_SPLIT, op, newSVREF(newGVOP(OP_GV, 0, defgv)) ); | |
3803 | ||
3804 | kid = kid->op_sibling; | |
3805 | scalar(kid); | |
3806 | ||
3807 | if (!kid->op_sibling) | |
3808 | append_elem(OP_SPLIT, op, newSVOP(OP_CONST, 0, newSViv(0))); | |
3809 | ||
3810 | kid = kid->op_sibling; | |
3811 | scalar(kid); | |
3812 | ||
3813 | if (kid->op_sibling) | |
3814 | return too_many_arguments(op); | |
3815 | ||
3816 | return op; | |
3817 | } | |
3818 | ||
3819 | OP * | |
3820 | ck_subr(op) | |
3821 | OP *op; | |
3822 | { | |
93a17b20 LW |
3823 | OP *o = ((cUNOP->op_first->op_sibling) |
3824 | ? cUNOP : ((UNOP*)cUNOP->op_first))->op_first->op_sibling; | |
3825 | ||
8990e307 LW |
3826 | if (o->op_type == OP_RV2CV) |
3827 | null(o); /* disable rv2cv */ | |
85e6fe83 | 3828 | op->op_private = (hints & HINT_STRICT_REFS); |
8990e307 | 3829 | if (perldb && curstash != debstash) |
85e6fe83 | 3830 | op->op_private |= OPpDEREF_DB; |
a0d0e21e LW |
3831 | while (o = o->op_sibling) |
3832 | mod(o, OP_ENTERSUB); | |
79072805 LW |
3833 | return op; |
3834 | } | |
3835 | ||
3836 | OP * | |
8990e307 LW |
3837 | ck_svconst(op) |
3838 | OP *op; | |
3839 | { | |
3840 | SvREADONLY_on(cSVOP->op_sv); | |
3841 | return op; | |
3842 | } | |
3843 | ||
3844 | OP * | |
79072805 LW |
3845 | ck_trunc(op) |
3846 | OP *op; | |
3847 | { | |
3848 | if (op->op_flags & OPf_KIDS) { | |
3849 | SVOP *kid = (SVOP*)cUNOP->op_first; | |
3850 | ||
a0d0e21e LW |
3851 | if (kid->op_type == OP_NULL) |
3852 | kid = (SVOP*)kid->op_sibling; | |
3853 | if (kid && | |
3854 | kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) | |
79072805 LW |
3855 | op->op_flags |= OPf_SPECIAL; |
3856 | } | |
3857 | return ck_fun(op); | |
3858 | } | |
3859 | ||
463ee0b2 LW |
3860 | /* A peephole optimizer. We visit the ops in the order they're to execute. */ |
3861 | ||
79072805 | 3862 | void |
a0d0e21e LW |
3863 | peep(o) |
3864 | register OP* o; | |
79072805 LW |
3865 | { |
3866 | register OP* oldop = 0; | |
a0d0e21e | 3867 | if (!o || o->op_seq) |
79072805 | 3868 | return; |
a0d0e21e LW |
3869 | ENTER; |
3870 | SAVESPTR(op); | |
3871 | SAVESPTR(curcop); | |
3872 | for (; o; o = o->op_next) { | |
3873 | if (o->op_seq) | |
3874 | break; | |
3875 | op = o; | |
3876 | switch (o->op_type) { | |
3877 | case OP_NEXTSTATE: | |
3878 | case OP_DBSTATE: | |
3879 | curcop = ((COP*)o); /* for warnings */ | |
748a9306 | 3880 | o->op_seq = ++op_seqmax; |
a0d0e21e LW |
3881 | break; |
3882 | ||
3883 | case OP_CONCAT: | |
3884 | case OP_CONST: | |
3885 | case OP_JOIN: | |
3886 | case OP_UC: | |
3887 | case OP_UCFIRST: | |
3888 | case OP_LC: | |
3889 | case OP_LCFIRST: | |
3890 | case OP_QUOTEMETA: | |
3891 | if (o->op_next->op_type == OP_STRINGIFY) | |
3892 | null(o->op_next); | |
3893 | o->op_seq = ++op_seqmax; | |
3894 | break; | |
8990e307 | 3895 | case OP_STUB: |
a0d0e21e LW |
3896 | if ((o->op_flags & (OPf_KNOW|OPf_LIST)) != (OPf_KNOW|OPf_LIST)) { |
3897 | o->op_seq = ++op_seqmax; | |
8990e307 LW |
3898 | break; /* Scalar stub must produce undef. List stub is noop */ |
3899 | } | |
748a9306 | 3900 | goto nothin; |
79072805 | 3901 | case OP_NULL: |
748a9306 LW |
3902 | if (o->op_targ == OP_NEXTSTATE || o->op_targ == OP_DBSTATE) |
3903 | curcop = ((COP*)op); | |
3904 | goto nothin; | |
79072805 | 3905 | case OP_SCALAR: |
93a17b20 | 3906 | case OP_LINESEQ: |
463ee0b2 | 3907 | case OP_SCOPE: |
748a9306 | 3908 | nothin: |
a0d0e21e LW |
3909 | if (oldop && o->op_next) { |
3910 | oldop->op_next = o->op_next; | |
79072805 LW |
3911 | continue; |
3912 | } | |
a0d0e21e | 3913 | o->op_seq = ++op_seqmax; |
79072805 LW |
3914 | break; |
3915 | ||
3916 | case OP_GV: | |
a0d0e21e LW |
3917 | if (o->op_next->op_type == OP_RV2SV) { |
3918 | if (!(o->op_next->op_private & (OPpDEREF_HV|OPpDEREF_AV))) { | |
3919 | null(o->op_next); | |
3920 | o->op_private |= o->op_next->op_private & OPpLVAL_INTRO; | |
3921 | o->op_next = o->op_next->op_next; | |
3922 | o->op_type = OP_GVSV; | |
3923 | o->op_ppaddr = ppaddr[OP_GVSV]; | |
8990e307 LW |
3924 | } |
3925 | } | |
a0d0e21e LW |
3926 | else if (o->op_next->op_type == OP_RV2AV) { |
3927 | OP* pop = o->op_next->op_next; | |
3928 | IV i; | |
8990e307 | 3929 | if (pop->op_type == OP_CONST && |
a0d0e21e | 3930 | (op = pop->op_next) && |
8990e307 | 3931 | pop->op_next->op_type == OP_AELEM && |
a0d0e21e LW |
3932 | !(pop->op_next->op_private & |
3933 | (OPpDEREF_HV|OPpDEREF_AV|OPpLVAL_INTRO)) && | |
3934 | (i = SvIV(((SVOP*)pop)->op_sv) - compiling.cop_arybase) | |
3935 | <= 255 && | |
8990e307 LW |
3936 | i >= 0) |
3937 | { | |
748a9306 | 3938 | SvREFCNT_dec(((SVOP*)pop)->op_sv); |
a0d0e21e | 3939 | null(o->op_next); |
8990e307 LW |
3940 | null(pop->op_next); |
3941 | null(pop); | |
a0d0e21e LW |
3942 | o->op_flags |= pop->op_next->op_flags & OPf_MOD; |
3943 | o->op_next = pop->op_next->op_next; | |
3944 | o->op_type = OP_AELEMFAST; | |
3945 | o->op_ppaddr = ppaddr[OP_AELEMFAST]; | |
3946 | o->op_private = (U8)i; | |
3947 | GvAVn((GV*)(((SVOP*)o)->op_sv)); | |
8990e307 | 3948 | } |
79072805 | 3949 | } |
a0d0e21e | 3950 | o->op_seq = ++op_seqmax; |
79072805 LW |
3951 | break; |
3952 | ||
a0d0e21e | 3953 | case OP_MAPWHILE: |
79072805 LW |
3954 | case OP_GREPWHILE: |
3955 | case OP_AND: | |
3956 | case OP_OR: | |
a0d0e21e | 3957 | o->op_seq = ++op_seqmax; |
79072805 LW |
3958 | peep(cLOGOP->op_other); |
3959 | break; | |
3960 | ||
3961 | case OP_COND_EXPR: | |
a0d0e21e | 3962 | o->op_seq = ++op_seqmax; |
79072805 LW |
3963 | peep(cCONDOP->op_true); |
3964 | peep(cCONDOP->op_false); | |
3965 | break; | |
3966 | ||
3967 | case OP_ENTERLOOP: | |
a0d0e21e | 3968 | o->op_seq = ++op_seqmax; |
79072805 LW |
3969 | peep(cLOOP->op_redoop); |
3970 | peep(cLOOP->op_nextop); | |
3971 | peep(cLOOP->op_lastop); | |
3972 | break; | |
3973 | ||
3974 | case OP_MATCH: | |
3975 | case OP_SUBST: | |
a0d0e21e LW |
3976 | o->op_seq = ++op_seqmax; |
3977 | peep(cPMOP->op_pmreplstart); | |
79072805 LW |
3978 | break; |
3979 | ||
a0d0e21e LW |
3980 | case OP_EXEC: |
3981 | o->op_seq = ++op_seqmax; | |
3982 | if (dowarn && o->op_next && o->op_next->op_type == OP_NEXTSTATE) { | |
3983 | if (o->op_next->op_sibling && | |
3984 | o->op_next->op_sibling->op_type != OP_DIE) { | |
3985 | line_t oldline = curcop->cop_line; | |
3986 | ||
3987 | curcop->cop_line = ((COP*)o->op_next)->cop_line; | |
3988 | warn("Statement unlikely to be reached"); | |
3989 | warn("(Maybe you meant system() when you said exec()?)\n"); | |
3990 | curcop->cop_line = oldline; | |
3991 | } | |
3992 | } | |
3993 | break; | |
79072805 | 3994 | default: |
a0d0e21e | 3995 | o->op_seq = ++op_seqmax; |
79072805 LW |
3996 | break; |
3997 | } | |
a0d0e21e | 3998 | oldop = o; |
79072805 | 3999 | } |
a0d0e21e | 4000 | LEAVE; |
79072805 | 4001 | } |