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79072805 LW |
1 | /* $RCSfile: cmd.h,v $$Revision: 4.1 $$Date: 92/08/07 17:19:19 $ |
2 | * | |
3 | * Copyright (c) 1991, Larry Wall | |
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 | * | |
8 | * $Log: cmd.h,v $ | |
9 | */ | |
10 | ||
11 | #include "EXTERN.h" | |
12 | #include "perl.h" | |
13 | ||
79072805 LW |
14 | /* Lowest byte of opargs */ |
15 | #define OA_MARK 1 | |
16 | #define OA_FOLDCONST 2 | |
17 | #define OA_RETSCALAR 4 | |
18 | #define OA_TARGET 8 | |
19 | #define OA_RETINTEGER 16 | |
20 | #define OA_OTHERINT 32 | |
21 | #define OA_DANGEROUS 64 | |
22 | ||
23 | /* Remaining nybbles of opargs */ | |
24 | #define OA_SCALAR 1 | |
25 | #define OA_LIST 2 | |
26 | #define OA_AVREF 3 | |
27 | #define OA_HVREF 4 | |
28 | #define OA_CVREF 5 | |
29 | #define OA_FILEREF 6 | |
30 | #define OA_SCALARREF 7 | |
31 | #define OA_OPTIONAL 8 | |
32 | ||
79072805 LW |
33 | void |
34 | cpy7bit(d,s,l) | |
35 | register char *d; | |
36 | register char *s; | |
37 | register I32 l; | |
38 | { | |
39 | while (l--) | |
40 | *d++ = *s++ & 127; | |
41 | *d = '\0'; | |
42 | } | |
43 | ||
79072805 LW |
44 | OP * |
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 | ||
54 | OP * | |
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 | ||
63 | OP * | |
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 | ||
72 | /* "register" allocation */ | |
73 | ||
74 | PADOFFSET | |
93a17b20 LW |
75 | pad_allocmy(name) |
76 | char *name; | |
77 | { | |
78 | PADOFFSET off = pad_alloc(OP_PADSV, 'M'); | |
79 | SV *sv = NEWSV(0,0); | |
80 | sv_upgrade(sv, SVt_PVNV); | |
81 | sv_setpv(sv, name); | |
82 | av_store(comppadname, off, sv); | |
463ee0b2 LW |
83 | SvNVX(sv) = (double)cop_seqmax; |
84 | SvIVX(sv) = 99999999; | |
93a17b20 | 85 | if (*name == '@') |
463ee0b2 | 86 | av_store(comppad, off, (SV*)newAV()); |
93a17b20 | 87 | else if (*name == '%') |
463ee0b2 | 88 | av_store(comppad, off, (SV*)newHV()); |
93a17b20 LW |
89 | return off; |
90 | } | |
91 | ||
92 | PADOFFSET | |
93 | pad_findmy(name) | |
94 | char *name; | |
95 | { | |
96 | I32 off; | |
97 | SV *sv; | |
98 | SV **svp = AvARRAY(comppadname); | |
99 | register I32 i; | |
100 | register CONTEXT *cx; | |
101 | bool saweval; | |
102 | AV *curlist; | |
103 | AV *curname; | |
104 | CV *cv; | |
463ee0b2 | 105 | I32 seq = cop_seqmax; |
93a17b20 LW |
106 | |
107 | for (off = comppadnamefill; off > 0; off--) { | |
108 | if ((sv = svp[off]) && | |
463ee0b2 LW |
109 | seq <= SvIVX(sv) && |
110 | seq > (I32)SvNVX(sv) && | |
111 | strEQ(SvPVX(sv), name)) | |
93a17b20 LW |
112 | { |
113 | return (PADOFFSET)off; | |
114 | } | |
115 | } | |
116 | ||
117 | /* Nothing in current lexical context--try eval's context, if any. | |
118 | * This is necessary to let the perldb get at lexically scoped variables. | |
119 | * XXX This will also probably interact badly with eval tree caching. | |
120 | */ | |
121 | ||
122 | saweval = FALSE; | |
123 | for (i = cxstack_ix; i >= 0; i--) { | |
124 | cx = &cxstack[i]; | |
125 | switch (cx->cx_type) { | |
126 | default: | |
127 | break; | |
128 | case CXt_EVAL: | |
129 | saweval = TRUE; | |
130 | break; | |
131 | case CXt_SUB: | |
132 | if (!saweval) | |
133 | return 0; | |
134 | cv = cx->blk_sub.cv; | |
135 | if (debstash && CvSTASH(cv) == debstash) /* ignore DB'* scope */ | |
136 | continue; | |
137 | seq = cxstack[i+1].blk_oldcop->cop_seq; | |
138 | curlist = CvPADLIST(cv); | |
139 | curname = (AV*)*av_fetch(curlist, 0, FALSE); | |
140 | svp = AvARRAY(curname); | |
141 | for (off = AvFILL(curname); off > 0; off--) { | |
142 | if ((sv = svp[off]) && | |
463ee0b2 LW |
143 | seq <= SvIVX(sv) && |
144 | seq > (I32)SvNVX(sv) && | |
145 | strEQ(SvPVX(sv), name)) | |
93a17b20 LW |
146 | { |
147 | PADOFFSET newoff = pad_alloc(OP_PADSV, 'M'); | |
148 | AV *oldpad = (AV*)*av_fetch(curlist, CvDEPTH(cv), FALSE); | |
149 | SV *oldsv = *av_fetch(oldpad, off, TRUE); | |
150 | SV *sv = NEWSV(0,0); | |
151 | sv_upgrade(sv, SVt_PVNV); | |
152 | sv_setpv(sv, name); | |
153 | av_store(comppadname, newoff, sv); | |
463ee0b2 LW |
154 | SvNVX(sv) = (double)curcop->cop_seq; |
155 | SvIVX(sv) = 99999999; | |
93a17b20 LW |
156 | av_store(comppad, newoff, sv_ref(oldsv)); |
157 | return newoff; | |
158 | } | |
159 | } | |
160 | return 0; | |
161 | } | |
162 | } | |
163 | ||
164 | return 0; | |
165 | } | |
166 | ||
167 | void | |
168 | pad_leavemy(fill) | |
169 | I32 fill; | |
170 | { | |
171 | I32 off; | |
172 | SV **svp = AvARRAY(comppadname); | |
173 | SV *sv; | |
174 | for (off = AvFILL(comppadname); off > fill; off--) { | |
175 | if (sv = svp[off]) | |
463ee0b2 | 176 | SvIVX(sv) = cop_seqmax; |
93a17b20 LW |
177 | } |
178 | } | |
179 | ||
180 | PADOFFSET | |
79072805 LW |
181 | pad_alloc(optype,tmptype) |
182 | I32 optype; | |
183 | char tmptype; | |
184 | { | |
185 | SV *sv; | |
186 | I32 retval; | |
187 | ||
188 | if (AvARRAY(comppad) != curpad) | |
463ee0b2 | 189 | croak("panic: pad_alloc"); |
79072805 LW |
190 | if (tmptype == 'M') { |
191 | do { | |
192 | sv = *av_fetch(comppad, AvFILL(comppad) + 1, TRUE); | |
193 | } while (SvSTORAGE(sv)); /* need a fresh one */ | |
194 | retval = AvFILL(comppad); | |
195 | } | |
196 | else { | |
197 | do { | |
198 | sv = *av_fetch(comppad, ++padix, TRUE); | |
199 | } while (SvSTORAGE(sv) == 'T' || SvSTORAGE(sv) == 'M'); | |
200 | retval = padix; | |
201 | } | |
202 | SvSTORAGE(sv) = tmptype; | |
203 | curpad = AvARRAY(comppad); | |
204 | DEBUG_X(fprintf(stderr, "Pad alloc %d for %s\n", retval, op_name[optype])); | |
205 | return (PADOFFSET)retval; | |
206 | } | |
207 | ||
208 | SV * | |
209 | pad_sv(po) | |
210 | PADOFFSET po; | |
211 | { | |
212 | if (!po) | |
463ee0b2 | 213 | croak("panic: pad_sv po"); |
79072805 LW |
214 | DEBUG_X(fprintf(stderr, "Pad sv %d\n", po)); |
215 | return curpad[po]; /* eventually we'll turn this into a macro */ | |
216 | } | |
217 | ||
218 | void | |
219 | pad_free(po) | |
220 | PADOFFSET po; | |
221 | { | |
222 | if (AvARRAY(comppad) != curpad) | |
463ee0b2 | 223 | croak("panic: pad_free curpad"); |
79072805 | 224 | if (!po) |
463ee0b2 | 225 | croak("panic: pad_free po"); |
79072805 LW |
226 | DEBUG_X(fprintf(stderr, "Pad free %d\n", po)); |
227 | if (curpad[po]) | |
228 | SvSTORAGE(curpad[po]) = 'F'; | |
229 | if (po < padix) | |
230 | padix = po - 1; | |
231 | } | |
232 | ||
233 | void | |
234 | pad_swipe(po) | |
235 | PADOFFSET po; | |
236 | { | |
237 | if (AvARRAY(comppad) != curpad) | |
463ee0b2 | 238 | croak("panic: pad_swipe curpad"); |
79072805 | 239 | if (!po) |
463ee0b2 | 240 | croak("panic: pad_swipe po"); |
79072805 LW |
241 | DEBUG_X(fprintf(stderr, "Pad swipe %d\n", po)); |
242 | curpad[po] = NEWSV(0,0); | |
243 | SvSTORAGE(curpad[po]) = 'F'; | |
244 | if (po < padix) | |
245 | padix = po - 1; | |
246 | } | |
247 | ||
248 | void | |
249 | pad_reset() | |
250 | { | |
251 | register I32 po; | |
252 | ||
253 | if (AvARRAY(comppad) != curpad) | |
463ee0b2 | 254 | croak("panic: pad_reset curpad"); |
79072805 LW |
255 | DEBUG_X(fprintf(stderr, "Pad reset\n")); |
256 | for (po = AvMAX(comppad); po > 0; po--) { | |
257 | if (curpad[po] && SvSTORAGE(curpad[po]) == 'T') | |
258 | SvSTORAGE(curpad[po]) = 'F'; | |
259 | } | |
260 | padix = 0; | |
261 | } | |
262 | ||
263 | /* Destructor */ | |
264 | ||
265 | void | |
266 | op_free(op) | |
267 | OP *op; | |
268 | { | |
269 | register OP *kid; | |
270 | ||
271 | if (!op) | |
272 | return; | |
273 | ||
274 | if (op->op_flags & OPf_KIDS) { | |
275 | for (kid = cUNOP->op_first; kid; kid = kid->op_sibling) | |
276 | op_free(kid); | |
277 | } | |
278 | ||
279 | if (op->op_targ > 0) | |
280 | pad_free(op->op_targ); | |
281 | ||
282 | switch (op->op_type) { | |
463ee0b2 | 283 | case OP_GVSV: |
79072805 | 284 | case OP_GV: |
463ee0b2 | 285 | sv_free((SV*)cGVOP->op_gv); |
79072805 LW |
286 | break; |
287 | case OP_CONST: | |
288 | sv_free(cSVOP->op_sv); | |
289 | break; | |
290 | } | |
291 | ||
292 | Safefree(op); | |
293 | } | |
294 | ||
295 | /* Contextualizers */ | |
296 | ||
463ee0b2 | 297 | #define LINKLIST(o) ((o)->op_next ? (o)->op_next : linklist((OP*)o)) |
79072805 LW |
298 | |
299 | OP * | |
300 | linklist(op) | |
301 | OP *op; | |
302 | { | |
303 | register OP *kid; | |
304 | ||
305 | if (op->op_next) | |
306 | return op->op_next; | |
307 | ||
308 | /* establish postfix order */ | |
309 | if (cUNOP->op_first) { | |
310 | op->op_next = LINKLIST(cUNOP->op_first); | |
311 | for (kid = cUNOP->op_first; kid; kid = kid->op_sibling) { | |
312 | if (kid->op_sibling) | |
313 | kid->op_next = LINKLIST(kid->op_sibling); | |
314 | else | |
315 | kid->op_next = op; | |
316 | } | |
317 | } | |
318 | else | |
319 | op->op_next = op; | |
320 | ||
321 | return op->op_next; | |
322 | } | |
323 | ||
324 | OP * | |
325 | scalarkids(op) | |
326 | OP *op; | |
327 | { | |
328 | OP *kid; | |
329 | if (op && op->op_flags & OPf_KIDS) { | |
330 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
331 | scalar(kid); | |
332 | } | |
333 | return op; | |
334 | } | |
335 | ||
336 | OP * | |
337 | scalar(op) | |
338 | OP *op; | |
339 | { | |
340 | OP *kid; | |
341 | ||
342 | if (!op || (op->op_flags & OPf_KNOW)) /* assumes no premature commitment */ | |
343 | return op; | |
344 | ||
345 | op->op_flags &= ~OPf_LIST; | |
346 | op->op_flags |= OPf_KNOW; | |
347 | ||
348 | switch (op->op_type) { | |
349 | case OP_REPEAT: | |
350 | scalar(cBINOP->op_first); | |
351 | return op; | |
352 | case OP_OR: | |
353 | case OP_AND: | |
354 | case OP_COND_EXPR: | |
355 | break; | |
356 | default: | |
357 | case OP_MATCH: | |
358 | case OP_SUBST: | |
359 | case OP_NULL: | |
360 | if (!(op->op_flags & OPf_KIDS)) | |
361 | return op; | |
362 | break; | |
463ee0b2 | 363 | case OP_SCOPE: |
79072805 LW |
364 | case OP_LEAVE: |
365 | case OP_LEAVETRY: | |
366 | case OP_LINESEQ: | |
367 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) { | |
368 | if (kid->op_sibling) | |
369 | scalarvoid(kid); | |
370 | else | |
371 | scalar(kid); | |
372 | } | |
93a17b20 | 373 | curcop = &compiling; |
79072805 LW |
374 | return op; |
375 | case OP_LIST: | |
376 | op = prepend_elem(OP_LIST, newOP(OP_PUSHMARK, 0), op); | |
377 | break; | |
378 | } | |
379 | for (kid = cUNOP->op_first->op_sibling; kid; kid = kid->op_sibling) | |
380 | scalar(kid); | |
381 | return op; | |
382 | } | |
383 | ||
384 | OP * | |
385 | scalarvoid(op) | |
386 | OP *op; | |
387 | { | |
388 | OP *kid; | |
389 | ||
390 | if (!op) | |
391 | return op; | |
392 | if (op->op_flags & OPf_LIST) | |
393 | return op; | |
394 | ||
395 | op->op_flags |= OPf_KNOW; | |
396 | ||
397 | switch (op->op_type) { | |
398 | default: | |
463ee0b2 LW |
399 | if (dowarn && (opargs[op->op_type] & OA_FOLDCONST) && |
400 | !(op->op_flags & OPf_STACKED)) | |
93a17b20 | 401 | warn("Useless use of %s", op_name[op->op_type]); |
79072805 LW |
402 | return op; |
403 | ||
93a17b20 LW |
404 | case OP_NEXTSTATE: |
405 | curcop = ((COP*)op); /* for warning above */ | |
406 | break; | |
407 | ||
79072805 LW |
408 | case OP_CONST: |
409 | op->op_type = OP_NULL; /* don't execute a constant */ | |
410 | sv_free(cSVOP->op_sv); /* don't even remember it */ | |
411 | break; | |
412 | ||
413 | case OP_POSTINC: | |
414 | op->op_type = OP_PREINC; | |
415 | op->op_ppaddr = ppaddr[OP_PREINC]; | |
416 | break; | |
417 | ||
418 | case OP_POSTDEC: | |
419 | op->op_type = OP_PREDEC; | |
420 | op->op_ppaddr = ppaddr[OP_PREDEC]; | |
421 | break; | |
422 | ||
423 | case OP_REPEAT: | |
424 | scalarvoid(cBINOP->op_first); | |
425 | break; | |
426 | case OP_OR: | |
427 | case OP_AND: | |
428 | case OP_COND_EXPR: | |
429 | for (kid = cUNOP->op_first->op_sibling; kid; kid = kid->op_sibling) | |
430 | scalarvoid(kid); | |
431 | break; | |
432 | case OP_ENTERTRY: | |
433 | case OP_ENTER: | |
434 | case OP_SCALAR: | |
435 | case OP_NULL: | |
436 | if (!(op->op_flags & OPf_KIDS)) | |
437 | break; | |
463ee0b2 | 438 | case OP_SCOPE: |
79072805 LW |
439 | case OP_LEAVE: |
440 | case OP_LEAVETRY: | |
441 | case OP_LINESEQ: | |
442 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
443 | scalarvoid(kid); | |
444 | break; | |
445 | case OP_LIST: | |
446 | op = prepend_elem(OP_LIST, newOP(OP_PUSHMARK, 0), op); | |
447 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
448 | scalarvoid(kid); | |
449 | break; | |
450 | } | |
451 | return op; | |
452 | } | |
453 | ||
454 | OP * | |
455 | listkids(op) | |
456 | OP *op; | |
457 | { | |
458 | OP *kid; | |
459 | if (op && op->op_flags & OPf_KIDS) { | |
460 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
461 | list(kid); | |
462 | } | |
463 | return op; | |
464 | } | |
465 | ||
466 | OP * | |
467 | list(op) | |
468 | OP *op; | |
469 | { | |
470 | OP *kid; | |
471 | ||
472 | if (!op || (op->op_flags & OPf_KNOW)) /* assumes no premature commitment */ | |
473 | return op; | |
474 | ||
475 | op->op_flags |= (OPf_KNOW | OPf_LIST); | |
476 | ||
477 | switch (op->op_type) { | |
478 | case OP_FLOP: | |
479 | case OP_REPEAT: | |
480 | list(cBINOP->op_first); | |
481 | break; | |
482 | case OP_OR: | |
483 | case OP_AND: | |
484 | case OP_COND_EXPR: | |
485 | for (kid = cUNOP->op_first->op_sibling; kid; kid = kid->op_sibling) | |
486 | list(kid); | |
487 | break; | |
488 | default: | |
489 | case OP_MATCH: | |
490 | case OP_SUBST: | |
491 | case OP_NULL: | |
492 | if (!(op->op_flags & OPf_KIDS)) | |
493 | break; | |
494 | if (!op->op_next && cUNOP->op_first->op_type == OP_FLOP) { | |
495 | list(cBINOP->op_first); | |
496 | return gen_constant_list(op); | |
497 | } | |
498 | case OP_LIST: | |
499 | listkids(op); | |
500 | break; | |
463ee0b2 | 501 | case OP_SCOPE: |
79072805 LW |
502 | case OP_LEAVE: |
503 | case OP_LEAVETRY: | |
504 | case OP_LINESEQ: | |
505 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) { | |
506 | if (kid->op_sibling) | |
507 | scalarvoid(kid); | |
508 | else | |
509 | list(kid); | |
510 | } | |
93a17b20 | 511 | curcop = &compiling; |
79072805 LW |
512 | break; |
513 | } | |
514 | return op; | |
515 | } | |
516 | ||
517 | OP * | |
518 | scalarseq(op) | |
519 | OP *op; | |
520 | { | |
521 | OP *kid; | |
522 | ||
463ee0b2 LW |
523 | if (op) { |
524 | if (op->op_type == OP_LINESEQ || | |
525 | op->op_type == OP_SCOPE || | |
79072805 | 526 | op->op_type == OP_LEAVE || |
463ee0b2 LW |
527 | op->op_type == OP_LEAVETRY) |
528 | { | |
529 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) { | |
530 | if (kid->op_sibling) | |
531 | scalarvoid(kid); | |
532 | } | |
533 | curcop = &compiling; | |
79072805 | 534 | } |
463ee0b2 LW |
535 | op->op_flags &= ~OPf_PARENS; |
536 | if (needblockscope) | |
537 | op->op_flags |= OPf_PARENS; | |
79072805 LW |
538 | } |
539 | return op; | |
540 | } | |
541 | ||
542 | OP * | |
463ee0b2 | 543 | modkids(op, type) |
79072805 LW |
544 | OP *op; |
545 | I32 type; | |
546 | { | |
547 | OP *kid; | |
548 | if (op && op->op_flags & OPf_KIDS) { | |
549 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
463ee0b2 | 550 | mod(kid, type); |
79072805 LW |
551 | } |
552 | return op; | |
553 | } | |
554 | ||
463ee0b2 | 555 | static I32 modcount; |
79072805 LW |
556 | |
557 | OP * | |
463ee0b2 | 558 | mod(op, type) |
79072805 LW |
559 | OP *op; |
560 | I32 type; | |
561 | { | |
562 | OP *kid; | |
563 | SV *sv; | |
564 | ||
565 | if (!op) | |
566 | return op; | |
567 | ||
568 | switch (op->op_type) { | |
569 | case OP_ENTERSUBR: | |
570 | if ((type == OP_DEFINED || type == OP_UNDEF || type == OP_REFGEN) && | |
571 | !(op->op_flags & OPf_STACKED)) { | |
93a17b20 LW |
572 | op->op_type = OP_RV2CV; /* entersubr => rv2cv */ |
573 | op->op_ppaddr = ppaddr[OP_RV2CV]; | |
574 | cUNOP->op_first->op_type = OP_NULL; /* disable pushmark */ | |
575 | cUNOP->op_first->op_ppaddr = ppaddr[OP_NULL]; | |
79072805 LW |
576 | break; |
577 | } | |
578 | /* FALL THROUGH */ | |
579 | default: | |
580 | if (type == OP_DEFINED) | |
581 | return scalar(op); /* ordinary expression, not lvalue */ | |
582 | sprintf(tokenbuf, "Can't %s %s in %s", | |
583 | type == OP_REFGEN ? "refer to" : "modify", | |
584 | op_name[op->op_type], | |
585 | type ? op_name[type] : "local"); | |
586 | yyerror(tokenbuf); | |
587 | return op; | |
588 | ||
589 | case OP_COND_EXPR: | |
590 | for (kid = cUNOP->op_first->op_sibling; kid; kid = kid->op_sibling) | |
463ee0b2 | 591 | mod(kid, type); |
79072805 LW |
592 | break; |
593 | ||
594 | case OP_RV2AV: | |
595 | case OP_RV2HV: | |
596 | case OP_RV2GV: | |
93a17b20 | 597 | ref(cUNOP->op_first, op->op_type); |
79072805 LW |
598 | /* FALL THROUGH */ |
599 | case OP_AASSIGN: | |
600 | case OP_ASLICE: | |
601 | case OP_HSLICE: | |
93a17b20 LW |
602 | case OP_NEXTSTATE: |
603 | case OP_DBSTATE: | |
463ee0b2 | 604 | modcount = 10000; |
79072805 | 605 | break; |
463ee0b2 LW |
606 | case OP_RV2SV: |
607 | if (type == OP_RV2AV || type == OP_RV2HV) | |
608 | op->op_private = type; | |
609 | /* FALL THROUGH */ | |
93a17b20 LW |
610 | case OP_PADSV: |
611 | case OP_PADAV: | |
612 | case OP_PADHV: | |
79072805 LW |
613 | case OP_UNDEF: |
614 | case OP_GV: | |
463ee0b2 LW |
615 | case OP_AV2ARYLEN: |
616 | case OP_SASSIGN: | |
617 | case OP_REFGEN: | |
618 | case OP_ANONLIST: | |
619 | case OP_ANONHASH: | |
620 | modcount++; | |
621 | break; | |
622 | ||
623 | case OP_PUSHMARK: | |
624 | break; | |
625 | ||
626 | case OP_SUBSTR: | |
627 | case OP_VEC: | |
628 | op->op_targ = pad_alloc(op->op_type,'M'); | |
629 | sv = PAD_SV(op->op_targ); | |
630 | sv_upgrade(sv, SVt_PVLV); | |
631 | sv_magic(sv, 0, op->op_type == OP_VEC ? 'v' : 'x', 0, 0); | |
632 | curpad[op->op_targ] = sv; | |
633 | /* FALL THROUGH */ | |
634 | case OP_NULL: | |
635 | if (!(op->op_flags & OPf_KIDS)) | |
636 | croak("panic: mod"); | |
637 | mod(cBINOP->op_first, type ? type : op->op_type); | |
638 | break; | |
639 | case OP_AELEM: | |
640 | case OP_HELEM: | |
641 | mod(cBINOP->op_first, type ? type : op->op_type); | |
642 | if (type == OP_RV2AV || type == OP_RV2HV) | |
643 | op->op_private = type; | |
644 | break; | |
645 | ||
646 | case OP_SCOPE: | |
647 | case OP_LEAVE: | |
648 | case OP_ENTER: | |
649 | if (type != OP_RV2HV && type != OP_RV2AV) | |
650 | break; | |
651 | if (!(op->op_flags & OPf_KIDS)) | |
652 | break; | |
653 | /* FALL THROUGH */ | |
654 | case OP_LIST: | |
655 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
656 | mod(kid, type); | |
657 | break; | |
658 | } | |
659 | op->op_flags |= OPf_LVAL; | |
660 | if (!type) { | |
661 | op->op_flags &= ~OPf_SPECIAL; | |
662 | op->op_flags |= OPf_INTRO; | |
663 | } | |
664 | else if (type == OP_AASSIGN || type == OP_SASSIGN) | |
665 | op->op_flags |= OPf_SPECIAL; | |
666 | return op; | |
667 | } | |
668 | ||
669 | OP * | |
670 | refkids(op, type) | |
671 | OP *op; | |
672 | I32 type; | |
673 | { | |
674 | OP *kid; | |
675 | if (op && op->op_flags & OPf_KIDS) { | |
676 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
677 | ref(kid, type); | |
678 | } | |
679 | return op; | |
680 | } | |
681 | ||
682 | OP * | |
683 | ref(op, type) | |
684 | OP *op; | |
685 | I32 type; | |
686 | { | |
687 | OP *kid; | |
688 | SV *sv; | |
689 | ||
690 | if (!op) | |
691 | return op; | |
692 | ||
693 | switch (op->op_type) { | |
694 | default: | |
695 | sprintf(tokenbuf, "Can't use %s as reference in %s", | |
696 | op_name[op->op_type], | |
697 | type ? op_name[type] : "local"); | |
698 | yyerror(tokenbuf); | |
699 | return op; | |
700 | ||
701 | case OP_COND_EXPR: | |
702 | for (kid = cUNOP->op_first->op_sibling; kid; kid = kid->op_sibling) | |
703 | ref(kid, type); | |
704 | break; | |
705 | ||
706 | case OP_RV2AV: | |
707 | case OP_RV2HV: | |
708 | case OP_RV2GV: | |
709 | ref(cUNOP->op_first, op->op_type); | |
710 | /* FALL THROUGH */ | |
711 | case OP_AASSIGN: | |
712 | case OP_ASLICE: | |
713 | case OP_HSLICE: | |
714 | case OP_NEXTSTATE: | |
715 | case OP_DBSTATE: | |
716 | case OP_ENTERSUBR: | |
717 | break; | |
79072805 | 718 | case OP_RV2SV: |
463ee0b2 LW |
719 | if (type == OP_RV2AV || type == OP_RV2HV) |
720 | op->op_private = type; | |
721 | /* FALL THROUGH */ | |
722 | case OP_PADSV: | |
723 | case OP_PADAV: | |
724 | case OP_PADHV: | |
725 | case OP_UNDEF: | |
726 | case OP_GV: | |
79072805 LW |
727 | case OP_AV2ARYLEN: |
728 | case OP_SASSIGN: | |
729 | case OP_REFGEN: | |
730 | case OP_ANONLIST: | |
731 | case OP_ANONHASH: | |
79072805 LW |
732 | break; |
733 | ||
734 | case OP_PUSHMARK: | |
735 | break; | |
736 | ||
737 | case OP_SUBSTR: | |
738 | case OP_VEC: | |
739 | op->op_targ = pad_alloc(op->op_type,'M'); | |
740 | sv = PAD_SV(op->op_targ); | |
741 | sv_upgrade(sv, SVt_PVLV); | |
742 | sv_magic(sv, 0, op->op_type == OP_VEC ? 'v' : 'x', 0, 0); | |
743 | curpad[op->op_targ] = sv; | |
744 | /* FALL THROUGH */ | |
745 | case OP_NULL: | |
746 | if (!(op->op_flags & OPf_KIDS)) | |
463ee0b2 | 747 | break; |
79072805 LW |
748 | ref(cBINOP->op_first, type ? type : op->op_type); |
749 | break; | |
750 | case OP_AELEM: | |
751 | case OP_HELEM: | |
752 | ref(cBINOP->op_first, type ? type : op->op_type); | |
93a17b20 LW |
753 | if (type == OP_RV2AV || type == OP_RV2HV) |
754 | op->op_private = type; | |
79072805 LW |
755 | break; |
756 | ||
463ee0b2 | 757 | case OP_SCOPE: |
79072805 LW |
758 | case OP_LEAVE: |
759 | case OP_ENTER: | |
760 | if (type != OP_RV2HV && type != OP_RV2AV) | |
761 | break; | |
762 | if (!(op->op_flags & OPf_KIDS)) | |
763 | break; | |
764 | /* FALL THROUGH */ | |
765 | case OP_LIST: | |
766 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
767 | ref(kid, type); | |
768 | break; | |
769 | } | |
770 | op->op_flags |= OPf_LVAL; | |
771 | if (!type) { | |
772 | op->op_flags &= ~OPf_SPECIAL; | |
93a17b20 | 773 | op->op_flags |= OPf_INTRO; |
79072805 LW |
774 | } |
775 | else if (type == OP_AASSIGN || type == OP_SASSIGN) | |
776 | op->op_flags |= OPf_SPECIAL; | |
777 | return op; | |
778 | } | |
779 | ||
780 | OP * | |
93a17b20 LW |
781 | my(op) |
782 | OP *op; | |
783 | { | |
784 | OP *kid; | |
785 | SV *sv; | |
786 | I32 type; | |
787 | ||
788 | if (!op) | |
789 | return op; | |
790 | ||
791 | type = op->op_type; | |
792 | if (type == OP_LIST) { | |
793 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
794 | my(kid); | |
795 | } | |
796 | else if (type != OP_PADSV && | |
797 | type != OP_PADAV && | |
798 | type != OP_PADHV && | |
799 | type != OP_PUSHMARK) | |
800 | { | |
801 | sprintf(tokenbuf, "Can't declare %s in my", op_name[op->op_type]); | |
802 | yyerror(tokenbuf); | |
803 | return op; | |
804 | } | |
805 | op->op_flags |= OPf_LVAL|OPf_INTRO; | |
806 | return op; | |
807 | } | |
808 | ||
809 | OP * | |
79072805 LW |
810 | sawparens(o) |
811 | OP *o; | |
812 | { | |
813 | if (o) | |
814 | o->op_flags |= OPf_PARENS; | |
815 | return o; | |
816 | } | |
817 | ||
818 | OP * | |
819 | bind_match(type, left, right) | |
820 | I32 type; | |
821 | OP *left; | |
822 | OP *right; | |
823 | { | |
824 | OP *op; | |
825 | ||
826 | if (right->op_type == OP_MATCH || | |
827 | right->op_type == OP_SUBST || | |
828 | right->op_type == OP_TRANS) { | |
829 | right->op_flags |= OPf_STACKED; | |
830 | if (right->op_type != OP_MATCH) | |
463ee0b2 | 831 | left = mod(left, right->op_type); |
79072805 LW |
832 | if (right->op_type == OP_TRANS) |
833 | op = newBINOP(OP_NULL, 0, scalar(left), right); | |
834 | else | |
835 | op = prepend_elem(right->op_type, scalar(left), right); | |
836 | if (type == OP_NOT) | |
837 | return newUNOP(OP_NOT, 0, scalar(op)); | |
838 | return op; | |
839 | } | |
840 | else | |
841 | return bind_match(type, left, | |
842 | pmruntime(newPMOP(OP_MATCH, 0), right, Nullop)); | |
843 | } | |
844 | ||
845 | OP * | |
846 | invert(op) | |
847 | OP *op; | |
848 | { | |
849 | if (!op) | |
850 | return op; | |
851 | /* XXX need to optimize away NOT NOT here? Or do we let optimizer do it? */ | |
852 | return newUNOP(OP_NOT, OPf_SPECIAL, scalar(op)); | |
853 | } | |
854 | ||
855 | OP * | |
856 | scope(o) | |
857 | OP *o; | |
858 | { | |
859 | if (o) { | |
463ee0b2 LW |
860 | if (o->op_flags & OPf_PARENS) { |
861 | o = prepend_elem(OP_LINESEQ, newOP(OP_ENTER, 0), o); | |
862 | o->op_type = OP_LEAVE; | |
863 | o->op_ppaddr = ppaddr[OP_LEAVE]; | |
864 | } | |
865 | else { | |
866 | if (o->op_type == OP_LINESEQ) { | |
867 | OP *kid; | |
868 | o->op_type = OP_SCOPE; | |
869 | o->op_ppaddr = ppaddr[OP_SCOPE]; | |
870 | kid = ((LISTOP*)o)->op_first; | |
871 | if (kid->op_type == OP_NEXTSTATE) { | |
872 | kid->op_type = OP_NULL; | |
873 | kid->op_ppaddr = ppaddr[OP_NULL]; | |
874 | } | |
875 | } | |
876 | else | |
877 | o = newUNOP(OP_SCOPE, 0, o); | |
878 | } | |
79072805 LW |
879 | } |
880 | return o; | |
881 | } | |
882 | ||
883 | OP * | |
884 | block_head(o, startp) | |
885 | OP *o; | |
886 | OP **startp; | |
887 | { | |
888 | if (!o) { | |
889 | *startp = 0; | |
890 | return o; | |
891 | } | |
463ee0b2 | 892 | o = scope(scalarseq(o)); |
79072805 LW |
893 | *startp = LINKLIST(o); |
894 | o->op_next = 0; | |
895 | peep(*startp); | |
896 | return o; | |
897 | } | |
898 | ||
899 | OP * | |
93a17b20 | 900 | localize(o, lex) |
79072805 | 901 | OP *o; |
93a17b20 | 902 | I32 lex; |
79072805 LW |
903 | { |
904 | if (o->op_flags & OPf_PARENS) | |
905 | list(o); | |
906 | else | |
907 | scalar(o); | |
93a17b20 LW |
908 | in_my = FALSE; |
909 | if (lex) | |
910 | return my(o); | |
911 | else | |
463ee0b2 | 912 | return mod(o, OP_NULL); /* a bit kludgey */ |
79072805 LW |
913 | } |
914 | ||
915 | OP * | |
916 | jmaybe(o) | |
917 | OP *o; | |
918 | { | |
919 | if (o->op_type == OP_LIST) { | |
920 | o = convert(OP_JOIN, 0, | |
921 | prepend_elem(OP_LIST, | |
922 | newSVREF(newGVOP(OP_GV, 0, gv_fetchpv(";", TRUE))), | |
923 | o)); | |
924 | } | |
925 | return o; | |
926 | } | |
927 | ||
928 | OP * | |
929 | fold_constants(o) | |
930 | register OP *o; | |
931 | { | |
932 | register OP *curop; | |
933 | I32 type = o->op_type; | |
934 | SV *sv; | |
935 | ||
936 | if (opargs[type] & OA_RETSCALAR) | |
937 | scalar(o); | |
938 | if (opargs[type] & OA_TARGET) | |
939 | o->op_targ = pad_alloc(type,'T'); | |
940 | ||
941 | if (!(opargs[type] & OA_FOLDCONST)) | |
942 | goto nope; | |
943 | ||
944 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { | |
93a17b20 LW |
945 | if (curop->op_type != OP_CONST && |
946 | curop->op_type != OP_LIST && | |
947 | curop->op_type != OP_SCALAR && | |
948 | curop->op_type != OP_PUSHMARK) { | |
79072805 LW |
949 | goto nope; |
950 | } | |
951 | } | |
952 | ||
953 | curop = LINKLIST(o); | |
954 | o->op_next = 0; | |
955 | op = curop; | |
956 | run(); | |
957 | if (o->op_targ && *stack_sp == PAD_SV(o->op_targ)) | |
958 | pad_swipe(o->op_targ); | |
959 | op_free(o); | |
960 | if (type == OP_RV2GV) | |
961 | return newGVOP(OP_GV, 0, *(stack_sp--)); | |
962 | else | |
963 | return newSVOP(OP_CONST, 0, *(stack_sp--)); | |
964 | ||
965 | nope: | |
966 | if (!(opargs[type] & OA_OTHERINT)) | |
967 | return o; | |
968 | if (!(o->op_flags & OPf_KIDS)) | |
969 | return o; | |
970 | ||
971 | for (curop = ((UNOP*)o)->op_first; curop; curop = curop->op_sibling) { | |
972 | if (curop->op_type == OP_CONST) { | |
973 | if (SvIOK(((SVOP*)curop)->op_sv)) | |
974 | continue; | |
975 | return o; | |
976 | } | |
977 | if (opargs[curop->op_type] & OA_RETINTEGER) | |
978 | continue; | |
979 | return o; | |
980 | } | |
981 | ||
982 | o->op_ppaddr = ppaddr[++(o->op_type)]; | |
983 | return o; | |
984 | } | |
985 | ||
986 | OP * | |
987 | gen_constant_list(o) | |
988 | register OP *o; | |
989 | { | |
990 | register OP *curop; | |
991 | OP *anonop; | |
992 | I32 tmpmark; | |
993 | I32 tmpsp; | |
994 | I32 oldtmps_floor = tmps_floor; | |
995 | AV *av; | |
996 | GV *gv; | |
997 | ||
998 | tmpmark = stack_sp - stack_base; | |
999 | anonop = newANONLIST(o); | |
1000 | curop = LINKLIST(anonop); | |
1001 | anonop->op_next = 0; | |
1002 | op = curop; | |
1003 | run(); | |
1004 | tmpsp = stack_sp - stack_base; | |
1005 | tmps_floor = oldtmps_floor; | |
1006 | stack_sp = stack_base + tmpmark; | |
1007 | ||
1008 | o->op_type = OP_RV2AV; | |
1009 | o->op_ppaddr = ppaddr[OP_RV2AV]; | |
1010 | o->op_sibling = 0; | |
1011 | curop = ((UNOP*)o)->op_first; | |
1012 | ((UNOP*)o)->op_first = newSVOP(OP_CONST, 0, newSVsv(stack_sp[1])); | |
1013 | op_free(curop); | |
1014 | curop = ((UNOP*)anonop)->op_first; | |
1015 | curop = ((UNOP*)curop)->op_first; | |
1016 | curop->op_sibling = 0; | |
1017 | op_free(anonop); | |
1018 | o->op_next = 0; | |
1019 | linklist(o); | |
1020 | return list(o); | |
1021 | } | |
1022 | ||
1023 | OP * | |
1024 | convert(type, flags, op) | |
1025 | I32 type; | |
1026 | I32 flags; | |
1027 | OP* op; | |
1028 | { | |
1029 | OP *kid; | |
1030 | OP *last; | |
1031 | ||
1032 | if (opargs[type] & OA_MARK) | |
1033 | op = prepend_elem(OP_LIST, newOP(OP_PUSHMARK, 0), op); | |
1034 | ||
1035 | if (!op || op->op_type != OP_LIST) | |
1036 | op = newLISTOP(OP_LIST, 0, op, Nullop); | |
1037 | ||
1038 | op->op_type = type; | |
1039 | op->op_ppaddr = ppaddr[type]; | |
1040 | op->op_flags |= flags; | |
1041 | ||
1042 | op = (*check[type])(op); | |
1043 | if (op->op_type != type) | |
1044 | return op; | |
1045 | ||
1046 | if (cLISTOP->op_children < 7) { | |
1047 | /* XXX do we really need to do this if we're done appending?? */ | |
1048 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
1049 | last = kid; | |
1050 | cLISTOP->op_last = last; /* in case check substituted last arg */ | |
1051 | } | |
1052 | ||
1053 | return fold_constants(op); | |
1054 | } | |
1055 | ||
1056 | /* List constructors */ | |
1057 | ||
1058 | OP * | |
1059 | append_elem(type, first, last) | |
1060 | I32 type; | |
1061 | OP* first; | |
1062 | OP* last; | |
1063 | { | |
1064 | if (!first) | |
1065 | return last; | |
1066 | else if (!last) | |
1067 | return first; | |
1068 | else if (first->op_type == type) { | |
1069 | if (first->op_flags & OPf_KIDS) | |
1070 | ((LISTOP*)first)->op_last->op_sibling = last; | |
1071 | else { | |
1072 | first->op_flags |= OPf_KIDS; | |
1073 | ((LISTOP*)first)->op_first = last; | |
1074 | } | |
1075 | ((LISTOP*)first)->op_last = last; | |
1076 | ((LISTOP*)first)->op_children++; | |
1077 | return first; | |
1078 | } | |
1079 | ||
1080 | return newLISTOP(type, 0, first, last); | |
1081 | } | |
1082 | ||
1083 | OP * | |
1084 | append_list(type, first, last) | |
1085 | I32 type; | |
1086 | LISTOP* first; | |
1087 | LISTOP* last; | |
1088 | { | |
1089 | if (!first) | |
1090 | return (OP*)last; | |
1091 | else if (!last) | |
1092 | return (OP*)first; | |
1093 | else if (first->op_type != type) | |
1094 | return prepend_elem(type, (OP*)first, (OP*)last); | |
1095 | else if (last->op_type != type) | |
1096 | return append_elem(type, (OP*)first, (OP*)last); | |
1097 | ||
1098 | first->op_last->op_sibling = last->op_first; | |
1099 | first->op_last = last->op_last; | |
1100 | first->op_children += last->op_children; | |
1101 | if (first->op_children) | |
1102 | last->op_flags |= OPf_KIDS; | |
1103 | ||
1104 | Safefree(last); | |
1105 | return (OP*)first; | |
1106 | } | |
1107 | ||
1108 | OP * | |
1109 | prepend_elem(type, first, last) | |
1110 | I32 type; | |
1111 | OP* first; | |
1112 | OP* last; | |
1113 | { | |
1114 | if (!first) | |
1115 | return last; | |
1116 | else if (!last) | |
1117 | return first; | |
1118 | else if (last->op_type == type) { | |
1119 | if (!(last->op_flags & OPf_KIDS)) { | |
1120 | ((LISTOP*)last)->op_last = first; | |
1121 | last->op_flags |= OPf_KIDS; | |
1122 | } | |
1123 | first->op_sibling = ((LISTOP*)last)->op_first; | |
1124 | ((LISTOP*)last)->op_first = first; | |
1125 | ((LISTOP*)last)->op_children++; | |
1126 | return last; | |
1127 | } | |
1128 | ||
1129 | return newLISTOP(type, 0, first, last); | |
1130 | } | |
1131 | ||
1132 | /* Constructors */ | |
1133 | ||
1134 | OP * | |
1135 | newNULLLIST() | |
1136 | { | |
1137 | return Nullop; | |
1138 | } | |
1139 | ||
1140 | OP * | |
1141 | newLISTOP(type, flags, first, last) | |
1142 | I32 type; | |
1143 | I32 flags; | |
1144 | OP* first; | |
1145 | OP* last; | |
1146 | { | |
1147 | LISTOP *listop; | |
1148 | ||
1149 | Newz(1101, listop, 1, LISTOP); | |
1150 | ||
1151 | listop->op_type = type; | |
1152 | listop->op_ppaddr = ppaddr[type]; | |
1153 | listop->op_children = (first != 0) + (last != 0); | |
1154 | listop->op_flags = flags; | |
1155 | if (listop->op_children) | |
1156 | listop->op_flags |= OPf_KIDS; | |
1157 | ||
1158 | if (!last && first) | |
1159 | last = first; | |
1160 | else if (!first && last) | |
1161 | first = last; | |
1162 | listop->op_first = first; | |
1163 | listop->op_last = last; | |
1164 | if (first && first != last) | |
1165 | first->op_sibling = last; | |
1166 | ||
1167 | return (OP*)listop; | |
1168 | } | |
1169 | ||
1170 | OP * | |
1171 | newOP(type, flags) | |
1172 | I32 type; | |
1173 | I32 flags; | |
1174 | { | |
1175 | OP *op; | |
1176 | Newz(1101, op, 1, OP); | |
1177 | op->op_type = type; | |
1178 | op->op_ppaddr = ppaddr[type]; | |
1179 | op->op_flags = flags; | |
1180 | ||
1181 | op->op_next = op; | |
1182 | /* op->op_private = 0; */ | |
1183 | if (opargs[type] & OA_RETSCALAR) | |
1184 | scalar(op); | |
1185 | if (opargs[type] & OA_TARGET) | |
1186 | op->op_targ = pad_alloc(type,'T'); | |
1187 | return (*check[type])(op); | |
1188 | } | |
1189 | ||
1190 | OP * | |
1191 | newUNOP(type, flags, first) | |
1192 | I32 type; | |
1193 | I32 flags; | |
1194 | OP* first; | |
1195 | { | |
1196 | UNOP *unop; | |
1197 | ||
1198 | if (opargs[type] & OA_MARK) { | |
1199 | if (first->op_type == OP_LIST) | |
1200 | prepend_elem(OP_LIST, newOP(OP_PUSHMARK, 0), first); | |
1201 | else | |
1202 | return newBINOP(type, flags, newOP(OP_PUSHMARK, 0), first); | |
1203 | } | |
1204 | ||
93a17b20 LW |
1205 | if (!first) |
1206 | first = newOP(OP_STUB, 0); | |
1207 | ||
79072805 LW |
1208 | Newz(1101, unop, 1, UNOP); |
1209 | unop->op_type = type; | |
1210 | unop->op_ppaddr = ppaddr[type]; | |
1211 | unop->op_first = first; | |
1212 | unop->op_flags = flags | OPf_KIDS; | |
1213 | unop->op_private = 1; | |
1214 | ||
1215 | unop = (UNOP*)(*check[type])((OP*)unop); | |
1216 | if (unop->op_next) | |
1217 | return (OP*)unop; | |
1218 | ||
1219 | return fold_constants(unop); | |
1220 | } | |
1221 | ||
1222 | OP * | |
1223 | newBINOP(type, flags, first, last) | |
1224 | I32 type; | |
1225 | I32 flags; | |
1226 | OP* first; | |
1227 | OP* last; | |
1228 | { | |
1229 | BINOP *binop; | |
1230 | Newz(1101, binop, 1, BINOP); | |
1231 | ||
1232 | if (!first) | |
1233 | first = newOP(OP_NULL, 0); | |
1234 | ||
1235 | binop->op_type = type; | |
1236 | binop->op_ppaddr = ppaddr[type]; | |
1237 | binop->op_first = first; | |
1238 | binop->op_flags = flags | OPf_KIDS; | |
1239 | if (!last) { | |
1240 | last = first; | |
1241 | binop->op_private = 1; | |
1242 | } | |
1243 | else { | |
1244 | binop->op_private = 2; | |
1245 | first->op_sibling = last; | |
1246 | } | |
1247 | ||
1248 | binop = (BINOP*)(*check[type])((OP*)binop); | |
1249 | if (binop->op_next) | |
1250 | return (OP*)binop; | |
1251 | ||
1252 | binop->op_last = last = binop->op_first->op_sibling; | |
1253 | ||
1254 | return fold_constants(binop); | |
1255 | } | |
1256 | ||
1257 | OP * | |
1258 | pmtrans(op, expr, repl) | |
1259 | OP *op; | |
1260 | OP *expr; | |
1261 | OP *repl; | |
1262 | { | |
1263 | PMOP *pm = (PMOP*)op; | |
1264 | SV *tstr = ((SVOP*)expr)->op_sv; | |
1265 | SV *rstr = ((SVOP*)repl)->op_sv; | |
463ee0b2 LW |
1266 | STRLEN tlen; |
1267 | STRLEN rlen; | |
1268 | register char *t = SvPV(tstr, tlen); | |
1269 | register char *r = SvPV(rstr, rlen); | |
79072805 LW |
1270 | register I32 i; |
1271 | register I32 j; | |
1272 | I32 squash; | |
1273 | I32 delete; | |
1274 | I32 complement; | |
1275 | register short *tbl; | |
1276 | ||
1277 | tbl = (short*)cPVOP->op_pv; | |
1278 | complement = op->op_private & OPpTRANS_COMPLEMENT; | |
1279 | delete = op->op_private & OPpTRANS_DELETE; | |
1280 | squash = op->op_private & OPpTRANS_SQUASH; | |
1281 | ||
1282 | if (complement) { | |
1283 | Zero(tbl, 256, short); | |
1284 | for (i = 0; i < tlen; i++) | |
1285 | tbl[t[i] & 0377] = -1; | |
1286 | for (i = 0, j = 0; i < 256; i++) { | |
1287 | if (!tbl[i]) { | |
1288 | if (j >= rlen) { | |
1289 | if (delete) | |
1290 | tbl[i] = -2; | |
1291 | else if (rlen) | |
1292 | tbl[i] = r[j-1] & 0377; | |
1293 | else | |
1294 | tbl[i] = i; | |
1295 | } | |
1296 | else | |
1297 | tbl[i] = r[j++] & 0377; | |
1298 | } | |
1299 | } | |
1300 | } | |
1301 | else { | |
1302 | if (!rlen && !delete) { | |
1303 | r = t; rlen = tlen; | |
1304 | } | |
1305 | for (i = 0; i < 256; i++) | |
1306 | tbl[i] = -1; | |
1307 | for (i = 0, j = 0; i < tlen; i++,j++) { | |
1308 | if (j >= rlen) { | |
1309 | if (delete) { | |
1310 | if (tbl[t[i] & 0377] == -1) | |
1311 | tbl[t[i] & 0377] = -2; | |
1312 | continue; | |
1313 | } | |
1314 | --j; | |
1315 | } | |
1316 | if (tbl[t[i] & 0377] == -1) | |
1317 | tbl[t[i] & 0377] = r[j] & 0377; | |
1318 | } | |
1319 | } | |
1320 | op_free(expr); | |
1321 | op_free(repl); | |
1322 | ||
1323 | return op; | |
1324 | } | |
1325 | ||
1326 | OP * | |
1327 | newPMOP(type, flags) | |
1328 | I32 type; | |
1329 | I32 flags; | |
1330 | { | |
1331 | PMOP *pmop; | |
1332 | ||
1333 | Newz(1101, pmop, 1, PMOP); | |
1334 | pmop->op_type = type; | |
1335 | pmop->op_ppaddr = ppaddr[type]; | |
1336 | pmop->op_flags = flags; | |
1337 | pmop->op_private = 0; | |
1338 | ||
1339 | /* link into pm list */ | |
1340 | if (type != OP_TRANS) { | |
1341 | pmop->op_pmnext = HvPMROOT(curstash); | |
1342 | HvPMROOT(curstash) = pmop; | |
1343 | } | |
1344 | ||
1345 | return (OP*)pmop; | |
1346 | } | |
1347 | ||
1348 | OP * | |
1349 | pmruntime(op, expr, repl) | |
1350 | OP *op; | |
1351 | OP *expr; | |
1352 | OP *repl; | |
1353 | { | |
1354 | PMOP *pm; | |
1355 | LOGOP *rcop; | |
1356 | ||
1357 | if (op->op_type == OP_TRANS) | |
1358 | return pmtrans(op, expr, repl); | |
1359 | ||
1360 | pm = (PMOP*)op; | |
1361 | ||
1362 | if (expr->op_type == OP_CONST) { | |
463ee0b2 | 1363 | STRLEN plen; |
79072805 | 1364 | SV *pat = ((SVOP*)expr)->op_sv; |
463ee0b2 | 1365 | char *p = SvPV(pat, plen); |
79072805 | 1366 | if ((op->op_flags & OPf_SPECIAL) && strEQ(p, " ")) { |
93a17b20 | 1367 | sv_setpvn(pat, "\\s+", 3); |
463ee0b2 | 1368 | p = SvPV(pat, plen); |
79072805 LW |
1369 | pm->op_pmflags |= PMf_SKIPWHITE; |
1370 | } | |
463ee0b2 | 1371 | scan_prefix(pm, p, plen); |
79072805 LW |
1372 | if (pm->op_pmshort && (pm->op_pmflags & PMf_SCANFIRST)) |
1373 | fbm_compile(pm->op_pmshort, pm->op_pmflags & PMf_FOLD); | |
463ee0b2 | 1374 | pm->op_pmregexp = regcomp(p, p + plen, pm->op_pmflags & PMf_FOLD); |
79072805 LW |
1375 | hoistmust(pm); |
1376 | op_free(expr); | |
1377 | } | |
1378 | else { | |
463ee0b2 LW |
1379 | if (pm->op_pmflags & PMf_KEEP) |
1380 | expr = newUNOP(OP_REGCMAYBE,0,expr); | |
1381 | ||
79072805 LW |
1382 | Newz(1101, rcop, 1, LOGOP); |
1383 | rcop->op_type = OP_REGCOMP; | |
1384 | rcop->op_ppaddr = ppaddr[OP_REGCOMP]; | |
1385 | rcop->op_first = scalar(expr); | |
1386 | rcop->op_flags |= OPf_KIDS; | |
1387 | rcop->op_private = 1; | |
1388 | rcop->op_other = op; | |
1389 | ||
1390 | /* establish postfix order */ | |
463ee0b2 LW |
1391 | if (pm->op_pmflags & PMf_KEEP) { |
1392 | LINKLIST(expr); | |
1393 | rcop->op_next = expr; | |
1394 | ((UNOP*)expr)->op_first->op_next = (OP*)rcop; | |
1395 | } | |
1396 | else { | |
1397 | rcop->op_next = LINKLIST(expr); | |
1398 | expr->op_next = (OP*)rcop; | |
1399 | } | |
79072805 | 1400 | |
463ee0b2 | 1401 | prepend_elem(op->op_type, scalar((OP*)rcop), op); |
79072805 LW |
1402 | } |
1403 | ||
1404 | if (repl) { | |
1405 | if (repl->op_type == OP_CONST) { | |
1406 | pm->op_pmflags |= PMf_CONST; | |
1407 | prepend_elem(op->op_type, scalar(repl), op); | |
1408 | } | |
1409 | else { | |
1410 | OP *curop; | |
1411 | OP *lastop = 0; | |
1412 | for (curop = LINKLIST(repl); curop!=repl; curop = LINKLIST(curop)) { | |
1413 | if (opargs[curop->op_type] & OA_DANGEROUS) { | |
1414 | if (curop->op_type == OP_GV) { | |
1415 | GV *gv = ((GVOP*)curop)->op_gv; | |
93a17b20 | 1416 | if (strchr("&`'123456789+", *GvENAME(gv))) |
79072805 LW |
1417 | break; |
1418 | } | |
1419 | else if (curop->op_type == OP_RV2CV) | |
1420 | break; | |
1421 | else if (curop->op_type == OP_RV2SV || | |
1422 | curop->op_type == OP_RV2AV || | |
1423 | curop->op_type == OP_RV2HV || | |
1424 | curop->op_type == OP_RV2GV) { | |
1425 | if (lastop && lastop->op_type != OP_GV) /*funny deref?*/ | |
1426 | break; | |
1427 | } | |
1428 | else | |
1429 | break; | |
1430 | } | |
1431 | lastop = curop; | |
1432 | } | |
1433 | if (curop == repl) { | |
1434 | pm->op_pmflags |= PMf_CONST; /* const for long enough */ | |
1435 | prepend_elem(op->op_type, scalar(repl), op); | |
1436 | } | |
1437 | else { | |
1438 | Newz(1101, rcop, 1, LOGOP); | |
1439 | rcop->op_type = OP_SUBSTCONT; | |
1440 | rcop->op_ppaddr = ppaddr[OP_SUBSTCONT]; | |
1441 | rcop->op_first = scalar(repl); | |
1442 | rcop->op_flags |= OPf_KIDS; | |
1443 | rcop->op_private = 1; | |
1444 | rcop->op_other = op; | |
1445 | ||
1446 | /* establish postfix order */ | |
1447 | rcop->op_next = LINKLIST(repl); | |
1448 | repl->op_next = (OP*)rcop; | |
1449 | ||
463ee0b2 | 1450 | pm->op_pmreplroot = scalar((OP*)rcop); |
79072805 LW |
1451 | pm->op_pmreplstart = LINKLIST(rcop); |
1452 | rcop->op_next = 0; | |
1453 | } | |
1454 | } | |
1455 | } | |
1456 | ||
1457 | return (OP*)pm; | |
1458 | } | |
1459 | ||
1460 | OP * | |
1461 | newSVOP(type, flags, sv) | |
1462 | I32 type; | |
1463 | I32 flags; | |
1464 | SV *sv; | |
1465 | { | |
1466 | SVOP *svop; | |
1467 | Newz(1101, svop, 1, SVOP); | |
1468 | svop->op_type = type; | |
1469 | svop->op_ppaddr = ppaddr[type]; | |
1470 | svop->op_sv = sv; | |
1471 | svop->op_next = (OP*)svop; | |
1472 | svop->op_flags = flags; | |
1473 | if (opargs[type] & OA_RETSCALAR) | |
463ee0b2 | 1474 | scalar((OP*)svop); |
79072805 LW |
1475 | if (opargs[type] & OA_TARGET) |
1476 | svop->op_targ = pad_alloc(type,'T'); | |
1477 | return (*check[type])((OP*)svop); | |
1478 | } | |
1479 | ||
1480 | OP * | |
1481 | newGVOP(type, flags, gv) | |
1482 | I32 type; | |
1483 | I32 flags; | |
1484 | GV *gv; | |
1485 | { | |
1486 | GVOP *gvop; | |
1487 | Newz(1101, gvop, 1, GVOP); | |
1488 | gvop->op_type = type; | |
1489 | gvop->op_ppaddr = ppaddr[type]; | |
1490 | gvop->op_gv = (GV*)sv_ref(gv); | |
1491 | gvop->op_next = (OP*)gvop; | |
1492 | gvop->op_flags = flags; | |
1493 | if (opargs[type] & OA_RETSCALAR) | |
463ee0b2 | 1494 | scalar((OP*)gvop); |
79072805 LW |
1495 | if (opargs[type] & OA_TARGET) |
1496 | gvop->op_targ = pad_alloc(type,'T'); | |
1497 | return (*check[type])((OP*)gvop); | |
1498 | } | |
1499 | ||
1500 | OP * | |
1501 | newPVOP(type, flags, pv) | |
1502 | I32 type; | |
1503 | I32 flags; | |
1504 | char *pv; | |
1505 | { | |
1506 | PVOP *pvop; | |
1507 | Newz(1101, pvop, 1, PVOP); | |
1508 | pvop->op_type = type; | |
1509 | pvop->op_ppaddr = ppaddr[type]; | |
1510 | pvop->op_pv = pv; | |
1511 | pvop->op_next = (OP*)pvop; | |
1512 | pvop->op_flags = flags; | |
1513 | if (opargs[type] & OA_RETSCALAR) | |
463ee0b2 | 1514 | scalar((OP*)pvop); |
79072805 LW |
1515 | if (opargs[type] & OA_TARGET) |
1516 | pvop->op_targ = pad_alloc(type,'T'); | |
1517 | return (*check[type])((OP*)pvop); | |
1518 | } | |
1519 | ||
1520 | OP * | |
1521 | newCVOP(type, flags, cv, cont) | |
1522 | I32 type; | |
1523 | I32 flags; | |
1524 | CV *cv; | |
1525 | OP *cont; | |
1526 | { | |
1527 | CVOP *cvop; | |
1528 | Newz(1101, cvop, 1, CVOP); | |
1529 | cvop->op_type = type; | |
1530 | cvop->op_ppaddr = ppaddr[type]; | |
1531 | cvop->op_cv = cv; | |
1532 | cvop->op_cont = cont; | |
1533 | cvop->op_next = (OP*)cvop; | |
1534 | cvop->op_flags = flags; | |
1535 | if (opargs[type] & OA_RETSCALAR) | |
463ee0b2 | 1536 | scalar((OP*)cvop); |
79072805 LW |
1537 | if (opargs[type] & OA_TARGET) |
1538 | cvop->op_targ = pad_alloc(type,'T'); | |
1539 | return (*check[type])((OP*)cvop); | |
1540 | } | |
1541 | ||
1542 | void | |
1543 | package(op) | |
1544 | OP *op; | |
1545 | { | |
93a17b20 | 1546 | SV *sv; |
79072805 LW |
1547 | |
1548 | save_hptr(&curstash); | |
1549 | save_item(curstname); | |
93a17b20 | 1550 | if (op) { |
463ee0b2 LW |
1551 | STRLEN len; |
1552 | char *name; | |
93a17b20 | 1553 | sv = cSVOP->op_sv; |
463ee0b2 LW |
1554 | curstash = fetch_stash(sv,TRUE); |
1555 | name = SvPV(sv, len); | |
1556 | sv_setpvn(curstname, name, len); | |
93a17b20 LW |
1557 | op_free(op); |
1558 | } | |
1559 | else { | |
1560 | sv_setpv(curstname,"<none>"); | |
1561 | curstash = Nullhv; | |
1562 | } | |
79072805 LW |
1563 | copline = NOLINE; |
1564 | expect = XBLOCK; | |
1565 | } | |
1566 | ||
463ee0b2 LW |
1567 | HV* |
1568 | fetch_stash(sv,create) | |
1569 | SV *sv; | |
1570 | I32 create; | |
1571 | { | |
1572 | char tmpbuf[256]; | |
1573 | HV *stash; | |
1574 | GV *tmpgv; | |
1575 | char *name = SvPV(sv, na); | |
1576 | sprintf(tmpbuf,"%s::",name); | |
1577 | tmpgv = gv_fetchpv(tmpbuf,create); | |
1578 | if (!tmpgv) | |
1579 | return 0; | |
1580 | if (!GvHV(tmpgv)) | |
1581 | GvHV(tmpgv) = newHV(); | |
1582 | stash = GvHV(tmpgv); | |
1583 | if (!HvNAME(stash)) | |
1584 | HvNAME(stash) = savestr(name); | |
1585 | return stash; | |
1586 | } | |
1587 | ||
79072805 LW |
1588 | OP * |
1589 | newSLICEOP(flags, subscript, listval) | |
1590 | I32 flags; | |
1591 | OP *subscript; | |
1592 | OP *listval; | |
1593 | { | |
1594 | return newBINOP(OP_LSLICE, flags, | |
1595 | list(prepend_elem(OP_LIST, newOP(OP_PUSHMARK, 0), subscript)), | |
1596 | list(prepend_elem(OP_LIST, newOP(OP_PUSHMARK, 0), listval)) ); | |
1597 | } | |
1598 | ||
1599 | static I32 | |
1600 | list_assignment(op) | |
1601 | register OP *op; | |
1602 | { | |
1603 | if (!op) | |
1604 | return TRUE; | |
1605 | ||
1606 | if (op->op_type == OP_NULL && op->op_flags & OPf_KIDS) | |
1607 | op = cUNOP->op_first; | |
1608 | ||
1609 | if (op->op_type == OP_COND_EXPR) { | |
1610 | I32 t = list_assignment(cCONDOP->op_first->op_sibling); | |
1611 | I32 f = list_assignment(cCONDOP->op_first->op_sibling->op_sibling); | |
1612 | ||
1613 | if (t && f) | |
1614 | return TRUE; | |
1615 | if (t || f) | |
1616 | yyerror("Assignment to both a list and a scalar"); | |
1617 | return FALSE; | |
1618 | } | |
1619 | ||
1620 | if (op->op_type == OP_LIST || op->op_flags & OPf_PARENS || | |
1621 | op->op_type == OP_RV2AV || op->op_type == OP_RV2HV || | |
1622 | op->op_type == OP_ASLICE || op->op_type == OP_HSLICE) | |
1623 | return TRUE; | |
1624 | ||
93a17b20 LW |
1625 | if (op->op_type == OP_PADAV || op->op_type == OP_PADHV) |
1626 | return TRUE; | |
1627 | ||
79072805 LW |
1628 | if (op->op_type == OP_RV2SV) |
1629 | return FALSE; | |
1630 | ||
1631 | return FALSE; | |
1632 | } | |
1633 | ||
1634 | OP * | |
1635 | newASSIGNOP(flags, left, right) | |
1636 | I32 flags; | |
1637 | OP *left; | |
1638 | OP *right; | |
1639 | { | |
1640 | OP *op; | |
1641 | ||
1642 | if (list_assignment(left)) { | |
463ee0b2 LW |
1643 | modcount = 0; |
1644 | left = mod(left, OP_AASSIGN); | |
79072805 LW |
1645 | if (right && right->op_type == OP_SPLIT) { |
1646 | if ((op = ((LISTOP*)right)->op_first) && op->op_type == OP_PUSHRE) { | |
1647 | PMOP *pm = (PMOP*)op; | |
1648 | if (left->op_type == OP_RV2AV) { | |
1649 | op = ((UNOP*)left)->op_first; | |
1650 | if (op->op_type == OP_GV && !pm->op_pmreplroot) { | |
1651 | pm->op_pmreplroot = (OP*)((GVOP*)op)->op_gv; | |
1652 | pm->op_pmflags |= PMf_ONCE; | |
1653 | op_free(left); | |
1654 | return right; | |
1655 | } | |
1656 | } | |
1657 | else { | |
463ee0b2 | 1658 | if (modcount < 10000) { |
79072805 | 1659 | SV *sv = ((SVOP*)((LISTOP*)right)->op_last)->op_sv; |
463ee0b2 LW |
1660 | if (SvIVX(sv) == 0) |
1661 | sv_setiv(sv, modcount+1); | |
79072805 LW |
1662 | } |
1663 | } | |
1664 | } | |
1665 | } | |
1666 | op = newBINOP(OP_AASSIGN, flags, | |
1667 | list(prepend_elem(OP_LIST, newOP(OP_PUSHMARK, 0), right)), | |
1668 | list(prepend_elem(OP_LIST, newOP(OP_PUSHMARK, 0), left)) ); | |
1669 | op->op_private = 0; | |
93a17b20 | 1670 | if (!(left->op_flags & OPf_INTRO)) { |
79072805 LW |
1671 | static int generation = 0; |
1672 | OP *curop; | |
1673 | OP *lastop = op; | |
1674 | generation++; | |
1675 | for (curop = LINKLIST(op); curop != op; curop = LINKLIST(curop)) { | |
1676 | if (opargs[curop->op_type] & OA_DANGEROUS) { | |
1677 | if (curop->op_type == OP_GV) { | |
1678 | GV *gv = ((GVOP*)curop)->op_gv; | |
1679 | if (gv == defgv || SvCUR(gv) == generation) | |
1680 | break; | |
1681 | SvCUR(gv) = generation; | |
1682 | } | |
1683 | else if (curop->op_type == OP_RV2CV) | |
1684 | break; | |
1685 | else if (curop->op_type == OP_RV2SV || | |
1686 | curop->op_type == OP_RV2AV || | |
1687 | curop->op_type == OP_RV2HV || | |
1688 | curop->op_type == OP_RV2GV) { | |
1689 | if (lastop->op_type != OP_GV) /* funny deref? */ | |
1690 | break; | |
1691 | } | |
1692 | else | |
1693 | break; | |
1694 | } | |
1695 | lastop = curop; | |
1696 | } | |
1697 | if (curop != op) | |
1698 | op->op_private = OPpASSIGN_COMMON; | |
1699 | } | |
1700 | op->op_targ = pad_alloc(OP_AASSIGN, 'T'); /* for scalar context */ | |
1701 | return op; | |
1702 | } | |
1703 | if (!right) | |
1704 | right = newOP(OP_UNDEF, 0); | |
1705 | if (right->op_type == OP_READLINE) { | |
1706 | right->op_flags |= OPf_STACKED; | |
463ee0b2 | 1707 | return newBINOP(OP_NULL, flags, mod(scalar(left), OP_SASSIGN), scalar(right)); |
79072805 LW |
1708 | } |
1709 | else | |
1710 | op = newBINOP(OP_SASSIGN, flags, | |
463ee0b2 | 1711 | scalar(right), mod(scalar(left), OP_SASSIGN) ); |
79072805 LW |
1712 | return op; |
1713 | } | |
1714 | ||
1715 | OP * | |
1716 | newSTATEOP(flags, label, op) | |
1717 | I32 flags; | |
1718 | char *label; | |
1719 | OP *op; | |
1720 | { | |
1721 | register COP *cop; | |
1722 | ||
93a17b20 LW |
1723 | comppadnamefill = AvFILL(comppadname); /* introduce my variables */ |
1724 | ||
79072805 | 1725 | Newz(1101, cop, 1, COP); |
93a17b20 LW |
1726 | cop->op_type = OP_NEXTSTATE; |
1727 | cop->op_ppaddr = ppaddr[ perldb ? OP_DBSTATE : OP_NEXTSTATE ]; | |
79072805 LW |
1728 | cop->op_flags = flags; |
1729 | cop->op_private = 0; | |
1730 | cop->op_next = (OP*)cop; | |
1731 | ||
463ee0b2 LW |
1732 | if (label) { |
1733 | cop->cop_label = label; | |
1734 | needblockscope = TRUE; | |
1735 | } | |
1736 | cop->cop_seq = cop_seqmax++; | |
79072805 LW |
1737 | |
1738 | if (copline == NOLINE) | |
1739 | cop->cop_line = curcop->cop_line; | |
1740 | else { | |
1741 | cop->cop_line = copline; | |
1742 | copline = NOLINE; | |
1743 | } | |
1744 | cop->cop_filegv = curcop->cop_filegv; | |
1745 | cop->cop_stash = curstash; | |
1746 | ||
93a17b20 LW |
1747 | if (perldb) { |
1748 | SV **svp = av_fetch(GvAV(curcop->cop_filegv),(I32)cop->cop_line, FALSE); | |
1749 | if (svp && *svp != &sv_undef && !SvIOK(*svp)) { | |
463ee0b2 | 1750 | SvIVX(*svp) = 1; |
93a17b20 LW |
1751 | SvIOK_on(*svp); |
1752 | SvSTASH(*svp) = (HV*)cop; | |
1753 | } | |
1754 | } | |
1755 | ||
79072805 LW |
1756 | return prepend_elem(OP_LINESEQ, (OP*)cop, op); |
1757 | } | |
1758 | ||
1759 | OP * | |
1760 | newLOGOP(type, flags, first, other) | |
1761 | I32 type; | |
1762 | I32 flags; | |
1763 | OP* first; | |
1764 | OP* other; | |
1765 | { | |
1766 | LOGOP *logop; | |
1767 | OP *op; | |
1768 | ||
1769 | scalar(first); | |
1770 | /* optimize "!a && b" to "a || b", and "!a || b" to "a && b" */ | |
1771 | if (first->op_type == OP_NOT && (first->op_flags & OPf_SPECIAL)) { | |
1772 | if (type == OP_AND || type == OP_OR) { | |
1773 | if (type == OP_AND) | |
1774 | type = OP_OR; | |
1775 | else | |
1776 | type = OP_AND; | |
1777 | op = first; | |
1778 | first = cUNOP->op_first; | |
1779 | if (op->op_next) | |
1780 | first->op_next = op->op_next; | |
1781 | cUNOP->op_first = Nullop; | |
1782 | op_free(op); | |
1783 | } | |
1784 | } | |
1785 | if (first->op_type == OP_CONST) { | |
93a17b20 LW |
1786 | if (dowarn && (first->op_private & OPpCONST_BARE)) |
1787 | warn("Probable precedence problem on %s", op_name[type]); | |
79072805 LW |
1788 | if ((type == OP_AND) == (SvTRUE(((SVOP*)first)->op_sv))) { |
1789 | op_free(first); | |
1790 | return other; | |
1791 | } | |
1792 | else { | |
1793 | op_free(other); | |
1794 | return first; | |
1795 | } | |
1796 | } | |
1797 | else if (first->op_type == OP_WANTARRAY) { | |
1798 | if (type == OP_AND) | |
1799 | list(other); | |
1800 | else | |
1801 | scalar(other); | |
1802 | } | |
1803 | ||
1804 | if (!other) | |
1805 | return first; | |
1806 | ||
1807 | Newz(1101, logop, 1, LOGOP); | |
1808 | ||
1809 | logop->op_type = type; | |
1810 | logop->op_ppaddr = ppaddr[type]; | |
1811 | logop->op_first = first; | |
1812 | logop->op_flags = flags | OPf_KIDS; | |
1813 | logop->op_other = LINKLIST(other); | |
1814 | logop->op_private = 1; | |
1815 | ||
1816 | /* establish postfix order */ | |
1817 | logop->op_next = LINKLIST(first); | |
1818 | first->op_next = (OP*)logop; | |
1819 | first->op_sibling = other; | |
1820 | ||
1821 | op = newUNOP(OP_NULL, 0, (OP*)logop); | |
1822 | other->op_next = op; | |
1823 | ||
1824 | return op; | |
1825 | } | |
1826 | ||
1827 | OP * | |
1828 | newCONDOP(flags, first, true, false) | |
1829 | I32 flags; | |
1830 | OP* first; | |
1831 | OP* true; | |
1832 | OP* false; | |
1833 | { | |
1834 | CONDOP *condop; | |
1835 | OP *op; | |
1836 | ||
1837 | if (!false) | |
1838 | return newLOGOP(OP_AND, 0, first, true); | |
463ee0b2 LW |
1839 | if (!true) |
1840 | return newLOGOP(OP_OR, 0, first, false); | |
79072805 LW |
1841 | |
1842 | scalar(first); | |
1843 | if (first->op_type == OP_CONST) { | |
1844 | if (SvTRUE(((SVOP*)first)->op_sv)) { | |
1845 | op_free(first); | |
1846 | op_free(false); | |
1847 | return true; | |
1848 | } | |
1849 | else { | |
1850 | op_free(first); | |
1851 | op_free(true); | |
1852 | return false; | |
1853 | } | |
1854 | } | |
1855 | else if (first->op_type == OP_WANTARRAY) { | |
1856 | list(true); | |
1857 | scalar(false); | |
1858 | } | |
1859 | Newz(1101, condop, 1, CONDOP); | |
1860 | ||
1861 | condop->op_type = OP_COND_EXPR; | |
1862 | condop->op_ppaddr = ppaddr[OP_COND_EXPR]; | |
1863 | condop->op_first = first; | |
1864 | condop->op_flags = flags | OPf_KIDS; | |
1865 | condop->op_true = LINKLIST(true); | |
1866 | condop->op_false = LINKLIST(false); | |
1867 | condop->op_private = 1; | |
1868 | ||
1869 | /* establish postfix order */ | |
1870 | condop->op_next = LINKLIST(first); | |
1871 | first->op_next = (OP*)condop; | |
1872 | ||
1873 | first->op_sibling = true; | |
1874 | true->op_sibling = false; | |
1875 | op = newUNOP(OP_NULL, 0, (OP*)condop); | |
1876 | ||
1877 | true->op_next = op; | |
1878 | false->op_next = op; | |
1879 | ||
1880 | return op; | |
1881 | } | |
1882 | ||
1883 | OP * | |
1884 | newRANGE(flags, left, right) | |
1885 | I32 flags; | |
1886 | OP *left; | |
1887 | OP *right; | |
1888 | { | |
1889 | CONDOP *condop; | |
1890 | OP *flip; | |
1891 | OP *flop; | |
1892 | OP *op; | |
1893 | ||
1894 | Newz(1101, condop, 1, CONDOP); | |
1895 | ||
1896 | condop->op_type = OP_RANGE; | |
1897 | condop->op_ppaddr = ppaddr[OP_RANGE]; | |
1898 | condop->op_first = left; | |
1899 | condop->op_flags = OPf_KIDS; | |
1900 | condop->op_true = LINKLIST(left); | |
1901 | condop->op_false = LINKLIST(right); | |
1902 | condop->op_private = 1; | |
1903 | ||
1904 | left->op_sibling = right; | |
1905 | ||
1906 | condop->op_next = (OP*)condop; | |
1907 | flip = newUNOP(OP_FLIP, flags, (OP*)condop); | |
1908 | flop = newUNOP(OP_FLOP, 0, flip); | |
1909 | op = newUNOP(OP_NULL, 0, flop); | |
1910 | linklist(flop); | |
1911 | ||
1912 | left->op_next = flip; | |
1913 | right->op_next = flop; | |
1914 | ||
1915 | condop->op_targ = pad_alloc(OP_RANGE, 'M'); | |
1916 | sv_upgrade(PAD_SV(condop->op_targ), SVt_PVNV); | |
1917 | flip->op_targ = pad_alloc(OP_RANGE, 'M'); | |
1918 | sv_upgrade(PAD_SV(flip->op_targ), SVt_PVNV); | |
1919 | ||
1920 | flip->op_private = left->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
1921 | flop->op_private = right->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
1922 | ||
1923 | flip->op_next = op; | |
1924 | if (!flip->op_private || !flop->op_private) | |
1925 | linklist(op); /* blow off optimizer unless constant */ | |
1926 | ||
1927 | return op; | |
1928 | } | |
1929 | ||
1930 | OP * | |
1931 | newLOOPOP(flags, debuggable, expr, block) | |
1932 | I32 flags; | |
1933 | I32 debuggable; | |
1934 | OP *expr; | |
1935 | OP *block; | |
1936 | { | |
463ee0b2 | 1937 | OP* listop; |
93a17b20 | 1938 | OP* op; |
463ee0b2 LW |
1939 | int once = block && block->op_flags & OPf_SPECIAL && |
1940 | (block->op_type == OP_ENTERSUBR || block->op_type == OP_NULL); | |
93a17b20 | 1941 | |
463ee0b2 LW |
1942 | if (expr) { |
1943 | if (once && expr->op_type == OP_CONST && !SvTRUE(((SVOP*)expr)->op_sv)) | |
1944 | return block; /* do {} while 0 does once */ | |
1945 | else if (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB) | |
1946 | expr = newASSIGNOP(0, newSVREF(newGVOP(OP_GV, 0, defgv)), expr); | |
1947 | } | |
93a17b20 | 1948 | |
463ee0b2 | 1949 | listop = append_elem(OP_LINESEQ, block, newOP(OP_UNSTACK, 0)); |
93a17b20 | 1950 | op = newLOGOP(OP_AND, 0, expr, listop); |
463ee0b2 | 1951 | |
79072805 LW |
1952 | ((LISTOP*)listop)->op_last->op_next = LINKLIST(op); |
1953 | ||
463ee0b2 | 1954 | if (once && op != listop) |
79072805 LW |
1955 | op->op_next = ((LOGOP*)cUNOP->op_first)->op_other; |
1956 | ||
1957 | op->op_flags |= flags; | |
463ee0b2 | 1958 | return scope(op); |
79072805 LW |
1959 | } |
1960 | ||
1961 | OP * | |
1962 | newWHILEOP(flags, debuggable, loop, expr, block, cont) | |
1963 | I32 flags; | |
1964 | I32 debuggable; | |
1965 | LOOP *loop; | |
1966 | OP *expr; | |
1967 | OP *block; | |
1968 | OP *cont; | |
1969 | { | |
1970 | OP *redo; | |
1971 | OP *next = 0; | |
1972 | OP *listop; | |
1973 | OP *op; | |
1974 | OP *condop; | |
1975 | ||
1976 | if (expr && (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB)) | |
1977 | expr = newASSIGNOP(0, newSVREF(newGVOP(OP_GV, 0, defgv)), expr); | |
1978 | ||
1979 | if (!block) | |
1980 | block = newOP(OP_NULL, 0); | |
1981 | ||
1982 | if (cont) | |
1983 | next = LINKLIST(cont); | |
1984 | if (expr) | |
1985 | cont = append_elem(OP_LINESEQ, cont, newOP(OP_UNSTACK, 0)); | |
1986 | ||
463ee0b2 | 1987 | listop = append_list(OP_LINESEQ, (LISTOP*)block, (LISTOP*)cont); |
79072805 LW |
1988 | redo = LINKLIST(listop); |
1989 | ||
1990 | if (expr) { | |
1991 | op = newLOGOP(OP_AND, 0, expr, scalar(listop)); | |
463ee0b2 LW |
1992 | if (op == expr) { /* oops, it's a while (0) */ |
1993 | op_free(expr); | |
1994 | op_free((OP*)loop); | |
1995 | return Nullop; /* (listop already freed by newLOGOP) */ | |
1996 | } | |
79072805 LW |
1997 | ((LISTOP*)listop)->op_last->op_next = condop = |
1998 | (op == listop ? redo : LINKLIST(op)); | |
1999 | if (!next) | |
2000 | next = condop; | |
2001 | } | |
2002 | else | |
2003 | op = listop; | |
2004 | ||
2005 | if (!loop) { | |
2006 | Newz(1101,loop,1,LOOP); | |
2007 | loop->op_type = OP_ENTERLOOP; | |
2008 | loop->op_ppaddr = ppaddr[OP_ENTERLOOP]; | |
2009 | loop->op_private = 0; | |
2010 | loop->op_next = (OP*)loop; | |
2011 | } | |
2012 | ||
463ee0b2 | 2013 | op = newBINOP(OP_LEAVELOOP, 0, (OP*)loop, op); |
79072805 LW |
2014 | |
2015 | loop->op_redoop = redo; | |
2016 | loop->op_lastop = op; | |
2017 | ||
2018 | if (next) | |
2019 | loop->op_nextop = next; | |
2020 | else | |
2021 | loop->op_nextop = op; | |
2022 | ||
2023 | op->op_flags |= flags; | |
2024 | return op; | |
2025 | } | |
2026 | ||
2027 | OP * | |
2028 | newFOROP(flags,label,forline,sv,expr,block,cont) | |
2029 | I32 flags; | |
2030 | char *label; | |
2031 | line_t forline; | |
2032 | OP* sv; | |
2033 | OP* expr; | |
2034 | OP*block; | |
2035 | OP*cont; | |
2036 | { | |
2037 | LOOP *loop; | |
2038 | ||
2039 | copline = forline; | |
2040 | if (sv) { | |
2041 | if (sv->op_type == OP_RV2SV) { | |
2042 | OP *op = sv; | |
2043 | sv = cUNOP->op_first; | |
2044 | sv->op_next = sv; | |
2045 | cUNOP->op_first = Nullop; | |
2046 | op_free(op); | |
2047 | } | |
2048 | else | |
463ee0b2 | 2049 | croak("Can't use %s for loop variable", op_name[sv->op_type]); |
79072805 LW |
2050 | } |
2051 | else { | |
2052 | sv = newGVOP(OP_GV, 0, defgv); | |
2053 | } | |
2054 | loop = (LOOP*)list(convert(OP_ENTERITER, 0, | |
2055 | append_elem(OP_LIST, | |
2056 | prepend_elem(OP_LIST, newOP(OP_PUSHMARK, 0), expr), | |
2057 | scalar(sv)))); | |
2058 | return newSTATEOP(0, label, newWHILEOP(flags, 1, | |
93a17b20 | 2059 | loop, newOP(OP_ITER, 0), block, cont)); |
79072805 LW |
2060 | } |
2061 | ||
2062 | void | |
463ee0b2 | 2063 | cv_clear(cv) |
79072805 LW |
2064 | CV *cv; |
2065 | { | |
2066 | if (!CvUSERSUB(cv) && CvROOT(cv)) { | |
2067 | op_free(CvROOT(cv)); | |
2068 | CvROOT(cv) = Nullop; | |
2069 | if (CvDEPTH(cv)) | |
2070 | warn("Deleting active subroutine"); /* XXX */ | |
2071 | if (CvPADLIST(cv)) { | |
2072 | I32 i = AvFILL(CvPADLIST(cv)); | |
2073 | while (i > 0) { | |
2074 | SV** svp = av_fetch(CvPADLIST(cv), i--, FALSE); | |
2075 | if (svp) | |
463ee0b2 | 2076 | av_free((AV*)*svp); |
79072805 | 2077 | } |
463ee0b2 | 2078 | av_free((AV*)CvPADLIST(cv)); |
79072805 LW |
2079 | } |
2080 | } | |
79072805 LW |
2081 | } |
2082 | ||
2083 | void | |
2084 | newSUB(floor,op,block) | |
2085 | I32 floor; | |
2086 | OP *op; | |
2087 | OP *block; | |
2088 | { | |
2089 | register CV *cv; | |
463ee0b2 LW |
2090 | char *name = SvPVx(cSVOP->op_sv, na); |
2091 | GV *gv = gv_fetchpv(name,2); | |
79072805 LW |
2092 | AV* av; |
2093 | ||
463ee0b2 LW |
2094 | sub_generation++; |
2095 | if ((cv = GvCV(gv)) && !GvCVGEN(gv)) { | |
79072805 LW |
2096 | if (CvDEPTH(cv)) |
2097 | CvDELETED(cv) = TRUE; /* probably an autoloader */ | |
2098 | else { | |
93a17b20 | 2099 | if (dowarn && CvROOT(cv)) { |
79072805 LW |
2100 | line_t oldline = curcop->cop_line; |
2101 | ||
2102 | curcop->cop_line = copline; | |
2103 | warn("Subroutine %s redefined",name); | |
2104 | curcop->cop_line = oldline; | |
2105 | } | |
463ee0b2 | 2106 | sv_free((SV*)cv); |
79072805 LW |
2107 | } |
2108 | } | |
2109 | Newz(101,cv,1,CV); | |
2110 | sv_upgrade(cv, SVt_PVCV); | |
463ee0b2 | 2111 | SvREFCNT(cv) = 1; |
79072805 | 2112 | GvCV(gv) = cv; |
463ee0b2 | 2113 | GvCVGEN(gv) = 0; |
79072805 LW |
2114 | CvFILEGV(cv) = curcop->cop_filegv; |
2115 | ||
2116 | av = newAV(); | |
2117 | AvREAL_off(av); | |
93a17b20 LW |
2118 | if (AvFILL(comppadname) < AvFILL(comppad)) |
2119 | av_store(comppadname, AvFILL(comppad), Nullsv); | |
2120 | av_store(av, 0, (SV*)comppadname); | |
79072805 LW |
2121 | av_store(av, 1, (SV*)comppad); |
2122 | AvFILL(av) = 1; | |
2123 | CvPADLIST(cv) = av; | |
93a17b20 | 2124 | comppadname = newAV(); |
79072805 | 2125 | |
93a17b20 LW |
2126 | if (!block) { |
2127 | CvROOT(cv) = 0; | |
2128 | op_free(op); | |
2129 | copline = NOLINE; | |
2130 | leave_scope(floor); | |
2131 | return; | |
2132 | } | |
79072805 LW |
2133 | CvROOT(cv) = newUNOP(OP_LEAVESUBR, 0, scalarseq(block)); |
2134 | CvSTART(cv) = LINKLIST(CvROOT(cv)); | |
2135 | CvROOT(cv)->op_next = 0; | |
93a17b20 | 2136 | CvSTASH(cv) = curstash; |
79072805 LW |
2137 | peep(CvSTART(cv)); |
2138 | CvDELETED(cv) = FALSE; | |
93a17b20 LW |
2139 | if (strEQ(name, "BEGIN")) { |
2140 | line_t oldline = curcop->cop_line; | |
2141 | GV* oldfile = curcop->cop_filegv; | |
2142 | ||
2143 | if (!beginav) | |
2144 | beginav = newAV(); | |
2145 | av_push(beginav, sv_ref(gv)); | |
2146 | DEBUG_x( dump_sub(gv) ); | |
2147 | rs = nrs; | |
2148 | rslen = nrslen; | |
2149 | rschar = nrschar; | |
2150 | rspara = (nrslen == 2); | |
2151 | calllist(beginav); | |
463ee0b2 | 2152 | sv_free((SV*)cv); |
93a17b20 LW |
2153 | rs = "\n"; |
2154 | rslen = 1; | |
2155 | rschar = '\n'; | |
2156 | rspara = 0; | |
2157 | GvCV(gv) = 0; | |
2158 | curcop = &compiling; | |
2159 | curcop->cop_line = oldline; /* might have compiled something */ | |
2160 | curcop->cop_filegv = oldfile; /* recursively, clobbering these */ | |
2161 | } | |
2162 | else if (strEQ(name, "END")) { | |
2163 | if (!endav) | |
2164 | endav = newAV(); | |
2165 | av_unshift(endav, 1); | |
2166 | av_store(endav, 0, sv_ref(gv)); | |
2167 | } | |
79072805 LW |
2168 | if (perldb) { |
2169 | SV *sv; | |
2170 | SV *tmpstr = sv_mortalcopy(&sv_undef); | |
2171 | ||
463ee0b2 | 2172 | sprintf(buf,"%s:%ld",SvPVX(GvSV(curcop->cop_filegv)), subline); |
79072805 LW |
2173 | sv = newSVpv(buf,0); |
2174 | sv_catpv(sv,"-"); | |
2175 | sprintf(buf,"%ld",(long)curcop->cop_line); | |
2176 | sv_catpv(sv,buf); | |
2177 | gv_efullname(tmpstr,gv); | |
463ee0b2 | 2178 | hv_store(GvHV(DBsub), SvPVX(tmpstr), SvCUR(tmpstr), sv, 0); |
79072805 LW |
2179 | } |
2180 | op_free(op); | |
2181 | copline = NOLINE; | |
2182 | leave_scope(floor); | |
2183 | } | |
2184 | ||
2185 | void | |
463ee0b2 | 2186 | newXSUB(name, ix, subaddr, filename) |
79072805 LW |
2187 | char *name; |
2188 | I32 ix; | |
2189 | I32 (*subaddr)(); | |
2190 | char *filename; | |
2191 | { | |
2192 | register CV *cv; | |
463ee0b2 | 2193 | GV *gv = gv_fetchpv(name,2); |
79072805 | 2194 | |
463ee0b2 LW |
2195 | sub_generation++; |
2196 | if ((cv = GvCV(gv)) && !GvCVGEN(gv)) { | |
79072805 LW |
2197 | if (dowarn) |
2198 | warn("Subroutine %s redefined",name); | |
2199 | if (!CvUSERSUB(cv) && CvROOT(cv)) { | |
2200 | op_free(CvROOT(cv)); | |
2201 | CvROOT(cv) = Nullop; | |
2202 | } | |
2203 | Safefree(cv); | |
2204 | } | |
2205 | Newz(101,cv,1,CV); | |
2206 | sv_upgrade(cv, SVt_PVCV); | |
463ee0b2 | 2207 | SvREFCNT(cv) = 1; |
79072805 | 2208 | GvCV(gv) = cv; |
463ee0b2 | 2209 | GvCVGEN(gv) = 0; |
79072805 LW |
2210 | CvFILEGV(cv) = gv_fetchfile(filename); |
2211 | CvUSERSUB(cv) = subaddr; | |
2212 | CvUSERINDEX(cv) = ix; | |
2213 | CvDELETED(cv) = FALSE; | |
93a17b20 LW |
2214 | if (strEQ(name, "BEGIN")) { |
2215 | if (!beginav) | |
2216 | beginav = newAV(); | |
2217 | av_push(beginav, sv_ref(gv)); | |
2218 | } | |
2219 | else if (strEQ(name, "END")) { | |
2220 | if (!endav) | |
2221 | endav = newAV(); | |
2222 | av_unshift(endav, 1); | |
2223 | av_store(endav, 0, sv_ref(gv)); | |
2224 | } | |
79072805 LW |
2225 | } |
2226 | ||
2227 | void | |
2228 | newFORM(floor,op,block) | |
2229 | I32 floor; | |
2230 | OP *op; | |
2231 | OP *block; | |
2232 | { | |
2233 | register CV *cv; | |
2234 | char *name; | |
2235 | GV *gv; | |
2236 | AV* av; | |
2237 | ||
2238 | if (op) | |
463ee0b2 | 2239 | name = SvPVx(cSVOP->op_sv, na); |
79072805 LW |
2240 | else |
2241 | name = "STDOUT"; | |
2242 | gv = gv_fetchpv(name,TRUE); | |
2243 | if (cv = GvFORM(gv)) { | |
2244 | if (dowarn) { | |
2245 | line_t oldline = curcop->cop_line; | |
2246 | ||
2247 | curcop->cop_line = copline; | |
2248 | warn("Format %s redefined",name); | |
2249 | curcop->cop_line = oldline; | |
2250 | } | |
463ee0b2 | 2251 | sv_free((SV*)cv); |
79072805 LW |
2252 | } |
2253 | Newz(101,cv,1,CV); | |
2254 | sv_upgrade(cv, SVt_PVFM); | |
463ee0b2 | 2255 | SvREFCNT(cv) = 1; |
79072805 LW |
2256 | GvFORM(gv) = cv; |
2257 | CvFILEGV(cv) = curcop->cop_filegv; | |
2258 | ||
2259 | CvPADLIST(cv) = av = newAV(); | |
2260 | AvREAL_off(av); | |
2261 | av_store(av, 1, (SV*)comppad); | |
2262 | AvFILL(av) = 1; | |
2263 | ||
2264 | CvROOT(cv) = newUNOP(OP_LEAVEWRITE, 0, scalarseq(block)); | |
2265 | CvSTART(cv) = LINKLIST(CvROOT(cv)); | |
2266 | CvROOT(cv)->op_next = 0; | |
2267 | peep(CvSTART(cv)); | |
2268 | CvDELETED(cv) = FALSE; | |
2269 | FmLINES(cv) = 0; | |
2270 | op_free(op); | |
2271 | copline = NOLINE; | |
2272 | leave_scope(floor); | |
2273 | } | |
2274 | ||
2275 | OP * | |
2276 | newMETHOD(ref,name) | |
2277 | OP *ref; | |
2278 | OP *name; | |
2279 | { | |
2280 | LOGOP* mop; | |
2281 | Newz(1101, mop, 1, LOGOP); | |
2282 | mop->op_type = OP_METHOD; | |
2283 | mop->op_ppaddr = ppaddr[OP_METHOD]; | |
2284 | mop->op_first = scalar(ref); | |
2285 | mop->op_flags |= OPf_KIDS; | |
2286 | mop->op_private = 1; | |
2287 | mop->op_other = LINKLIST(name); | |
2288 | mop->op_targ = pad_alloc(OP_METHOD,'T'); | |
2289 | mop->op_next = LINKLIST(ref); | |
2290 | ref->op_next = (OP*)mop; | |
2291 | return (OP*)mop; | |
2292 | } | |
2293 | ||
2294 | OP * | |
2295 | newANONLIST(op) | |
2296 | OP* op; | |
2297 | { | |
93a17b20 LW |
2298 | return newUNOP(OP_REFGEN, 0, |
2299 | ref(list(convert(OP_ANONLIST, 0, op)), OP_REFGEN)); | |
79072805 LW |
2300 | } |
2301 | ||
2302 | OP * | |
2303 | newANONHASH(op) | |
2304 | OP* op; | |
2305 | { | |
93a17b20 LW |
2306 | return newUNOP(OP_REFGEN, 0, |
2307 | ref(list(convert(OP_ANONHASH, 0, op)), OP_REFGEN)); | |
79072805 LW |
2308 | } |
2309 | ||
2310 | OP * | |
2311 | oopsAV(o) | |
2312 | OP *o; | |
2313 | { | |
93a17b20 LW |
2314 | if (o->op_type == OP_PADAV) |
2315 | return o; | |
79072805 LW |
2316 | if (o->op_type == OP_RV2SV) { |
2317 | o->op_type = OP_RV2AV; | |
2318 | o->op_ppaddr = ppaddr[OP_RV2AV]; | |
2319 | ref(o, OP_RV2AV); | |
2320 | } | |
2321 | else | |
2322 | warn("oops: oopsAV"); | |
2323 | return o; | |
2324 | } | |
2325 | ||
2326 | OP * | |
2327 | oopsHV(o) | |
2328 | OP *o; | |
2329 | { | |
93a17b20 LW |
2330 | if (o->op_type == OP_PADHV) |
2331 | return o; | |
79072805 LW |
2332 | if (o->op_type == OP_RV2SV || o->op_type == OP_RV2AV) { |
2333 | o->op_type = OP_RV2HV; | |
2334 | o->op_ppaddr = ppaddr[OP_RV2HV]; | |
2335 | ref(o, OP_RV2HV); | |
2336 | } | |
2337 | else | |
2338 | warn("oops: oopsHV"); | |
2339 | return o; | |
2340 | } | |
2341 | ||
2342 | OP * | |
2343 | newAVREF(o) | |
2344 | OP *o; | |
2345 | { | |
93a17b20 LW |
2346 | if (o->op_type == OP_PADAV) |
2347 | return o; | |
79072805 LW |
2348 | return newUNOP(OP_RV2AV, 0, scalar(o)); |
2349 | } | |
2350 | ||
2351 | OP * | |
2352 | newGVREF(o) | |
2353 | OP *o; | |
2354 | { | |
2355 | return newUNOP(OP_RV2GV, 0, scalar(o)); | |
2356 | } | |
2357 | ||
2358 | OP * | |
2359 | newHVREF(o) | |
2360 | OP *o; | |
2361 | { | |
93a17b20 LW |
2362 | if (o->op_type == OP_PADHV) |
2363 | return o; | |
79072805 LW |
2364 | return newUNOP(OP_RV2HV, 0, scalar(o)); |
2365 | } | |
2366 | ||
2367 | OP * | |
2368 | oopsCV(o) | |
2369 | OP *o; | |
2370 | { | |
463ee0b2 | 2371 | croak("NOT IMPL LINE %d",__LINE__); |
79072805 LW |
2372 | /* STUB */ |
2373 | return o; | |
2374 | } | |
2375 | ||
2376 | OP * | |
2377 | newCVREF(o) | |
2378 | OP *o; | |
2379 | { | |
2380 | return newUNOP(OP_RV2CV, 0, scalar(o)); | |
2381 | } | |
2382 | ||
2383 | OP * | |
2384 | newSVREF(o) | |
2385 | OP *o; | |
2386 | { | |
93a17b20 LW |
2387 | if (o->op_type == OP_PADSV) |
2388 | return o; | |
79072805 LW |
2389 | return newUNOP(OP_RV2SV, 0, scalar(o)); |
2390 | } | |
2391 | ||
2392 | /* Check routines. */ | |
2393 | ||
2394 | OP * | |
2395 | ck_aelem(op) | |
2396 | OP *op; | |
2397 | { | |
2398 | /* XXX need to optimize constant subscript here. */ | |
2399 | return op; | |
2400 | } | |
2401 | ||
2402 | OP * | |
2403 | ck_concat(op) | |
2404 | OP *op; | |
2405 | { | |
2406 | if (cUNOP->op_first->op_type == OP_CONCAT) | |
2407 | op->op_flags |= OPf_STACKED; | |
2408 | return op; | |
2409 | } | |
2410 | ||
2411 | OP * | |
2412 | ck_chop(op) | |
2413 | OP *op; | |
2414 | { | |
2415 | if (op->op_flags & OPf_KIDS) { | |
2416 | OP* newop; | |
463ee0b2 | 2417 | op = modkids(ck_fun(op), op->op_type); |
79072805 LW |
2418 | if (op->op_private != 1) |
2419 | return op; | |
2420 | newop = cUNOP->op_first->op_sibling; | |
2421 | if (!newop || newop->op_type != OP_RV2SV) | |
2422 | return op; | |
2423 | op_free(cUNOP->op_first); | |
2424 | cUNOP->op_first = newop; | |
2425 | } | |
2426 | op->op_type = OP_SCHOP; | |
2427 | op->op_ppaddr = ppaddr[OP_SCHOP]; | |
2428 | return op; | |
2429 | } | |
2430 | ||
2431 | OP * | |
2432 | ck_eof(op) | |
2433 | OP *op; | |
2434 | { | |
2435 | I32 type = op->op_type; | |
2436 | ||
2437 | if (op->op_flags & OPf_KIDS) | |
2438 | return ck_fun(op); | |
2439 | ||
2440 | if (op->op_flags & OPf_SPECIAL) { | |
2441 | op_free(op); | |
2442 | op = newUNOP(type, 0, newGVOP(OP_GV, 0, gv_fetchpv("main'ARGV", TRUE))); | |
2443 | } | |
2444 | return op; | |
2445 | } | |
2446 | ||
2447 | OP * | |
2448 | ck_eval(op) | |
2449 | OP *op; | |
2450 | { | |
463ee0b2 | 2451 | needblockscope = TRUE; |
79072805 LW |
2452 | if (op->op_flags & OPf_KIDS) { |
2453 | SVOP *kid = (SVOP*)cUNOP->op_first; | |
2454 | ||
93a17b20 LW |
2455 | if (!kid) { |
2456 | op->op_flags &= ~OPf_KIDS; | |
2457 | op->op_type = OP_NULL; | |
2458 | op->op_ppaddr = ppaddr[OP_NULL]; | |
79072805 LW |
2459 | } |
2460 | else if (kid->op_type == OP_LINESEQ) { | |
2461 | LOGOP *enter; | |
2462 | ||
2463 | kid->op_next = op->op_next; | |
2464 | cUNOP->op_first = 0; | |
2465 | op_free(op); | |
2466 | ||
2467 | Newz(1101, enter, 1, LOGOP); | |
2468 | enter->op_type = OP_ENTERTRY; | |
2469 | enter->op_ppaddr = ppaddr[OP_ENTERTRY]; | |
2470 | enter->op_private = 0; | |
2471 | ||
2472 | /* establish postfix order */ | |
2473 | enter->op_next = (OP*)enter; | |
2474 | ||
463ee0b2 | 2475 | op = prepend_elem(OP_LINESEQ, (OP*)enter, (OP*)kid); |
79072805 LW |
2476 | op->op_type = OP_LEAVETRY; |
2477 | op->op_ppaddr = ppaddr[OP_LEAVETRY]; | |
2478 | enter->op_other = op; | |
2479 | return op; | |
2480 | } | |
2481 | } | |
2482 | else { | |
2483 | op_free(op); | |
2484 | op = newUNOP(OP_ENTEREVAL, 0, newSVREF(newGVOP(OP_GV, 0, defgv))); | |
2485 | } | |
2486 | return op; | |
2487 | } | |
2488 | ||
2489 | OP * | |
2490 | ck_exec(op) | |
2491 | OP *op; | |
2492 | { | |
2493 | OP *kid; | |
79072805 | 2494 | if (op->op_flags & OPf_STACKED) { |
463ee0b2 | 2495 | op = ck_fun(op); |
79072805 LW |
2496 | kid = cUNOP->op_first->op_sibling; |
2497 | if (kid->op_type == OP_RV2GV) { | |
2498 | kid->op_type = OP_NULL; | |
2499 | kid->op_ppaddr = ppaddr[OP_NULL]; | |
2500 | } | |
2501 | } | |
463ee0b2 LW |
2502 | else |
2503 | op = listkids(op); | |
79072805 LW |
2504 | return op; |
2505 | } | |
2506 | ||
2507 | OP * | |
2508 | ck_gvconst(o) | |
2509 | register OP *o; | |
2510 | { | |
2511 | o = fold_constants(o); | |
2512 | if (o->op_type == OP_CONST) | |
2513 | o->op_type = OP_GV; | |
2514 | return o; | |
2515 | } | |
2516 | ||
2517 | OP * | |
2518 | ck_rvconst(op) | |
2519 | register OP *op; | |
2520 | { | |
2521 | SVOP *kid = (SVOP*)cUNOP->op_first; | |
2522 | if (kid->op_type == OP_CONST) { | |
2523 | kid->op_type = OP_GV; | |
463ee0b2 LW |
2524 | kid->op_sv = sv_ref((SV*)gv_fetchpv(SvPVx(kid->op_sv, na), |
2525 | 1+(op->op_type==OP_RV2CV))); | |
79072805 LW |
2526 | } |
2527 | return op; | |
2528 | } | |
2529 | ||
2530 | OP * | |
2531 | ck_formline(op) | |
2532 | OP *op; | |
2533 | { | |
2534 | return ck_fun(op); | |
2535 | } | |
2536 | ||
2537 | OP * | |
2538 | ck_ftst(op) | |
2539 | OP *op; | |
2540 | { | |
2541 | I32 type = op->op_type; | |
2542 | ||
2543 | if (op->op_flags & OPf_SPECIAL) | |
2544 | return op; | |
2545 | ||
2546 | if (op->op_flags & OPf_KIDS) { | |
2547 | SVOP *kid = (SVOP*)cUNOP->op_first; | |
2548 | ||
2549 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
2550 | OP *newop = newGVOP(type, OPf_SPECIAL, | |
463ee0b2 | 2551 | gv_fetchpv(SvPVx(kid->op_sv, na), TRUE)); |
79072805 LW |
2552 | op_free(op); |
2553 | return newop; | |
2554 | } | |
2555 | } | |
2556 | else { | |
2557 | op_free(op); | |
2558 | if (type == OP_FTTTY) | |
2559 | return newGVOP(type, OPf_SPECIAL, gv_fetchpv("main'STDIN", TRUE)); | |
2560 | else | |
2561 | return newUNOP(type, 0, newSVREF(newGVOP(OP_GV, 0, defgv))); | |
2562 | } | |
2563 | return op; | |
2564 | } | |
2565 | ||
2566 | OP * | |
2567 | ck_fun(op) | |
2568 | OP *op; | |
2569 | { | |
2570 | register OP *kid; | |
2571 | OP **tokid; | |
2572 | OP *sibl; | |
2573 | I32 numargs = 0; | |
2574 | register I32 oa = opargs[op->op_type] >> 8; | |
2575 | ||
2576 | if (op->op_flags & OPf_STACKED) { | |
2577 | if ((oa & OA_OPTIONAL) && (oa >> 4) && !((oa >> 4) & OA_OPTIONAL)) | |
2578 | oa &= ~OA_OPTIONAL; | |
2579 | else | |
2580 | return no_fh_allowed(op); | |
2581 | } | |
2582 | ||
2583 | if (op->op_flags & OPf_KIDS) { | |
2584 | tokid = &cLISTOP->op_first; | |
2585 | kid = cLISTOP->op_first; | |
2586 | if (kid->op_type == OP_PUSHMARK) { | |
2587 | tokid = &kid->op_sibling; | |
2588 | kid = kid->op_sibling; | |
2589 | } | |
2590 | ||
2591 | while (oa && kid) { | |
2592 | numargs++; | |
2593 | sibl = kid->op_sibling; | |
2594 | switch (oa & 7) { | |
2595 | case OA_SCALAR: | |
2596 | scalar(kid); | |
2597 | break; | |
2598 | case OA_LIST: | |
2599 | if (oa < 16) { | |
2600 | kid = 0; | |
2601 | continue; | |
2602 | } | |
2603 | else | |
2604 | list(kid); | |
2605 | break; | |
2606 | case OA_AVREF: | |
2607 | if (kid->op_type == OP_CONST && | |
2608 | (kid->op_private & OPpCONST_BARE)) { | |
463ee0b2 | 2609 | char *name = SvPVx(((SVOP*)kid)->op_sv, na); |
79072805 | 2610 | OP *newop = newAVREF(newGVOP(OP_GV, 0, |
463ee0b2 LW |
2611 | gv_fetchpv(name, TRUE) )); |
2612 | if (dowarn) | |
2613 | warn("Array @%s missing the @ in argument %d of %s()", | |
2614 | name, numargs, op_name[op->op_type]); | |
79072805 LW |
2615 | op_free(kid); |
2616 | kid = newop; | |
2617 | kid->op_sibling = sibl; | |
2618 | *tokid = kid; | |
2619 | } | |
463ee0b2 | 2620 | mod(kid, op->op_type); |
79072805 LW |
2621 | break; |
2622 | case OA_HVREF: | |
2623 | if (kid->op_type == OP_CONST && | |
2624 | (kid->op_private & OPpCONST_BARE)) { | |
463ee0b2 | 2625 | char *name = SvPVx(((SVOP*)kid)->op_sv, na); |
79072805 | 2626 | OP *newop = newHVREF(newGVOP(OP_GV, 0, |
463ee0b2 LW |
2627 | gv_fetchpv(name, TRUE) )); |
2628 | if (dowarn) | |
2629 | warn("Hash %%%s missing the %% in argument %d of %s()", | |
2630 | name, numargs, op_name[op->op_type]); | |
79072805 LW |
2631 | op_free(kid); |
2632 | kid = newop; | |
2633 | kid->op_sibling = sibl; | |
2634 | *tokid = kid; | |
2635 | } | |
463ee0b2 | 2636 | mod(kid, op->op_type); |
79072805 LW |
2637 | break; |
2638 | case OA_CVREF: | |
2639 | { | |
2640 | OP *newop = newUNOP(OP_NULL, 0, scalar(kid)); | |
2641 | kid->op_sibling = 0; | |
2642 | linklist(kid); | |
2643 | newop->op_next = newop; | |
2644 | kid = newop; | |
2645 | kid->op_sibling = sibl; | |
2646 | *tokid = kid; | |
2647 | } | |
2648 | break; | |
2649 | case OA_FILEREF: | |
2650 | if (kid->op_type != OP_GV) { | |
2651 | if (kid->op_type == OP_CONST && | |
2652 | (kid->op_private & OPpCONST_BARE)) { | |
2653 | OP *newop = newGVOP(OP_GV, 0, | |
463ee0b2 | 2654 | gv_fetchpv(SvPVx(((SVOP*)kid)->op_sv, na), TRUE) ); |
79072805 LW |
2655 | op_free(kid); |
2656 | kid = newop; | |
2657 | } | |
2658 | else { | |
2659 | kid->op_sibling = 0; | |
2660 | kid = newUNOP(OP_RV2GV, 0, scalar(kid)); | |
2661 | } | |
2662 | kid->op_sibling = sibl; | |
2663 | *tokid = kid; | |
2664 | } | |
2665 | scalar(kid); | |
2666 | break; | |
2667 | case OA_SCALARREF: | |
463ee0b2 | 2668 | mod(scalar(kid), op->op_type); |
79072805 LW |
2669 | break; |
2670 | } | |
2671 | oa >>= 4; | |
2672 | tokid = &kid->op_sibling; | |
2673 | kid = kid->op_sibling; | |
2674 | } | |
2675 | op->op_private = numargs; | |
2676 | if (kid) | |
2677 | return too_many_arguments(op); | |
2678 | listkids(op); | |
2679 | } | |
2680 | if (oa) { | |
2681 | while (oa & OA_OPTIONAL) | |
2682 | oa >>= 4; | |
2683 | if (oa && oa != OA_LIST) | |
2684 | return too_few_arguments(op); | |
2685 | } | |
2686 | return op; | |
2687 | } | |
2688 | ||
2689 | OP * | |
2690 | ck_glob(op) | |
2691 | OP *op; | |
2692 | { | |
2693 | GV *gv = newGVgen(); | |
2694 | GvIOn(gv); | |
2695 | append_elem(OP_GLOB, op, newGVOP(OP_GV, 0, gv)); | |
2696 | scalarkids(op); | |
2697 | return op; | |
2698 | } | |
2699 | ||
2700 | OP * | |
2701 | ck_grep(op) | |
2702 | OP *op; | |
2703 | { | |
2704 | LOGOP *gwop; | |
2705 | OP *kid; | |
2706 | ||
93a17b20 LW |
2707 | if (op->op_flags & OPf_STACKED) { |
2708 | op = ck_sort(op); | |
2709 | op->op_flags &= ~OPf_STACKED; | |
2710 | } | |
79072805 LW |
2711 | op = ck_fun(op); |
2712 | if (error_count) | |
2713 | return op; | |
2714 | kid = cLISTOP->op_first->op_sibling; | |
2715 | if (kid->op_type != OP_NULL) | |
463ee0b2 | 2716 | croak("panic: ck_grep"); |
79072805 LW |
2717 | kid = kUNOP->op_first; |
2718 | ||
2719 | Newz(1101, gwop, 1, LOGOP); | |
2720 | gwop->op_type = OP_GREPWHILE; | |
2721 | gwop->op_ppaddr = ppaddr[OP_GREPWHILE]; | |
2722 | gwop->op_first = list(op); | |
2723 | gwop->op_flags |= OPf_KIDS; | |
2724 | gwop->op_private = 1; | |
2725 | gwop->op_other = LINKLIST(kid); | |
2726 | gwop->op_targ = pad_alloc(OP_GREPWHILE,'T'); | |
2727 | kid->op_next = (OP*)gwop; | |
2728 | ||
2729 | return (OP*)gwop; | |
2730 | } | |
2731 | ||
2732 | OP * | |
2733 | ck_index(op) | |
2734 | OP *op; | |
2735 | { | |
2736 | if (op->op_flags & OPf_KIDS) { | |
2737 | OP *kid = cLISTOP->op_first->op_sibling; /* get past pushmark */ | |
2738 | if (kid && kid->op_type == OP_CONST) | |
2739 | fbm_compile(((SVOP*)kid)->op_sv, 0); | |
2740 | } | |
2741 | return ck_fun(op); | |
2742 | } | |
2743 | ||
2744 | OP * | |
2745 | ck_lengthconst(op) | |
2746 | OP *op; | |
2747 | { | |
2748 | /* XXX length optimization goes here */ | |
2749 | return op; | |
2750 | } | |
2751 | ||
2752 | OP * | |
2753 | ck_lfun(op) | |
2754 | OP *op; | |
2755 | { | |
463ee0b2 | 2756 | return modkids(ck_fun(op), op->op_type); |
79072805 LW |
2757 | } |
2758 | ||
2759 | OP * | |
2760 | ck_listiob(op) | |
2761 | OP *op; | |
2762 | { | |
2763 | register OP *kid; | |
2764 | ||
2765 | kid = cLISTOP->op_first; | |
2766 | if (!kid) { | |
93a17b20 | 2767 | prepend_elem(op->op_type, newOP(OP_PUSHMARK, 0), op); |
79072805 LW |
2768 | kid = cLISTOP->op_first; |
2769 | } | |
2770 | if (kid->op_type == OP_PUSHMARK) | |
2771 | kid = kid->op_sibling; | |
2772 | if (kid && op->op_flags & OPf_STACKED) | |
2773 | kid = kid->op_sibling; | |
2774 | else if (kid && !kid->op_sibling) { /* print HANDLE; */ | |
2775 | if (kid->op_type == OP_CONST && kid->op_private & OPpCONST_BARE) { | |
2776 | op->op_flags |= OPf_STACKED; /* make it a filehandle */ | |
2777 | kid = newUNOP(OP_RV2GV, 0, scalar(kid)); | |
2778 | cLISTOP->op_first->op_sibling = kid; | |
2779 | cLISTOP->op_last = kid; | |
2780 | kid = kid->op_sibling; | |
2781 | } | |
2782 | } | |
2783 | ||
2784 | if (!kid) | |
2785 | append_elem(op->op_type, op, newSVREF(newGVOP(OP_GV, 0, defgv)) ); | |
2786 | ||
2787 | return listkids(op); | |
2788 | } | |
2789 | ||
2790 | OP * | |
2791 | ck_match(op) | |
2792 | OP *op; | |
2793 | { | |
2794 | cPMOP->op_pmflags |= PMf_RUNTIME; | |
2795 | return op; | |
2796 | } | |
2797 | ||
2798 | OP * | |
2799 | ck_null(op) | |
2800 | OP *op; | |
2801 | { | |
2802 | return op; | |
2803 | } | |
2804 | ||
2805 | OP * | |
2806 | ck_repeat(op) | |
2807 | OP *op; | |
2808 | { | |
2809 | if (cBINOP->op_first->op_flags & OPf_PARENS) { | |
2810 | op->op_private = OPpREPEAT_DOLIST; | |
2811 | cBINOP->op_first = | |
2812 | prepend_elem(OP_NULL, newOP(OP_PUSHMARK, 0), cBINOP->op_first); | |
2813 | } | |
2814 | else | |
2815 | scalar(op); | |
2816 | return op; | |
2817 | } | |
2818 | ||
2819 | OP * | |
2820 | ck_retarget(op) | |
2821 | OP *op; | |
2822 | { | |
463ee0b2 | 2823 | croak("NOT IMPL LINE %d",__LINE__); |
79072805 LW |
2824 | /* STUB */ |
2825 | return op; | |
2826 | } | |
2827 | ||
2828 | OP * | |
2829 | ck_select(op) | |
2830 | OP *op; | |
2831 | { | |
2832 | if (op->op_flags & OPf_KIDS) { | |
2833 | OP *kid = cLISTOP->op_first->op_sibling; /* get past pushmark */ | |
2834 | if (kid) { | |
2835 | op->op_type = OP_SSELECT; | |
2836 | op->op_ppaddr = ppaddr[OP_SSELECT]; | |
2837 | op = ck_fun(op); | |
2838 | return fold_constants(op); | |
2839 | } | |
2840 | } | |
2841 | return ck_fun(op); | |
2842 | } | |
2843 | ||
2844 | OP * | |
2845 | ck_shift(op) | |
2846 | OP *op; | |
2847 | { | |
2848 | I32 type = op->op_type; | |
2849 | ||
2850 | if (!(op->op_flags & OPf_KIDS)) { | |
2851 | op_free(op); | |
2852 | return newUNOP(type, 0, | |
2853 | scalar(newUNOP(OP_RV2AV, 0, | |
2854 | scalar(newGVOP(OP_GV, 0, | |
2855 | gv_fetchpv((subline ? "_" : "ARGV"), TRUE) ))))); | |
2856 | } | |
463ee0b2 | 2857 | return scalar(modkids(ck_fun(op), type)); |
79072805 LW |
2858 | } |
2859 | ||
2860 | OP * | |
2861 | ck_sort(op) | |
2862 | OP *op; | |
2863 | { | |
2864 | if (op->op_flags & OPf_STACKED) { | |
2865 | OP *kid = cLISTOP->op_first->op_sibling; /* get past pushmark */ | |
463ee0b2 LW |
2866 | OP *k; |
2867 | kid = kUNOP->op_first; /* get past rv2gv */ | |
79072805 | 2868 | |
463ee0b2 | 2869 | if (kid->op_type == OP_SCOPE || kid->op_type == OP_LEAVE) { |
79072805 | 2870 | linklist(kid); |
463ee0b2 LW |
2871 | if (kid->op_type == OP_SCOPE) { |
2872 | k = kid->op_next; | |
2873 | kid->op_next = 0; | |
2874 | peep(k); | |
79072805 | 2875 | } |
463ee0b2 LW |
2876 | else if (kid->op_type == OP_LEAVE) { |
2877 | kid->op_type = OP_NULL; /* wipe out leave */ | |
2878 | kid->op_ppaddr = ppaddr[OP_NULL]; | |
2879 | kid->op_next = kid; | |
2880 | ||
2881 | for (k = kLISTOP->op_first->op_next; k; k = k->op_next) { | |
2882 | if (k->op_next == kid) | |
2883 | k->op_next = 0; | |
2884 | } | |
2885 | peep(kLISTOP->op_first); | |
2886 | } | |
2887 | kid = cLISTOP->op_first->op_sibling; /* get past pushmark */ | |
2888 | kid->op_type = OP_NULL; /* wipe out rv2gv */ | |
79072805 LW |
2889 | kid->op_ppaddr = ppaddr[OP_NULL]; |
2890 | kid->op_next = kid; | |
79072805 LW |
2891 | op->op_flags |= OPf_SPECIAL; |
2892 | } | |
2893 | } | |
2894 | return op; | |
2895 | } | |
2896 | ||
2897 | OP * | |
2898 | ck_split(op) | |
2899 | OP *op; | |
2900 | { | |
2901 | register OP *kid; | |
2902 | ||
2903 | if (op->op_flags & OPf_STACKED) | |
2904 | return no_fh_allowed(op); | |
2905 | ||
2906 | if (!(op->op_flags & OPf_KIDS)) | |
2907 | op = prepend_elem(OP_SPLIT, | |
2908 | pmruntime( | |
2909 | newPMOP(OP_MATCH, OPf_SPECIAL), | |
2910 | newSVOP(OP_CONST, 0, newSVpv(" ", 1)), | |
2911 | Nullop), | |
2912 | op); | |
2913 | ||
2914 | kid = cLISTOP->op_first; | |
2915 | if (kid->op_type == OP_PUSHMARK) | |
463ee0b2 | 2916 | croak("panic: ck_split"); |
79072805 LW |
2917 | |
2918 | if (kid->op_type != OP_MATCH) { | |
2919 | OP *sibl = kid->op_sibling; | |
463ee0b2 | 2920 | kid->op_sibling = 0; |
79072805 LW |
2921 | kid = pmruntime( newPMOP(OP_MATCH, OPf_SPECIAL), kid, Nullop); |
2922 | if (cLISTOP->op_first == cLISTOP->op_last) | |
2923 | cLISTOP->op_last = kid; | |
2924 | cLISTOP->op_first = kid; | |
2925 | kid->op_sibling = sibl; | |
2926 | } | |
2927 | ||
2928 | kid->op_type = OP_PUSHRE; | |
2929 | kid->op_ppaddr = ppaddr[OP_PUSHRE]; | |
2930 | scalar(kid); | |
2931 | ||
2932 | if (!kid->op_sibling) | |
2933 | append_elem(OP_SPLIT, op, newSVREF(newGVOP(OP_GV, 0, defgv)) ); | |
2934 | ||
2935 | kid = kid->op_sibling; | |
2936 | scalar(kid); | |
2937 | ||
2938 | if (!kid->op_sibling) | |
2939 | append_elem(OP_SPLIT, op, newSVOP(OP_CONST, 0, newSViv(0))); | |
2940 | ||
2941 | kid = kid->op_sibling; | |
2942 | scalar(kid); | |
2943 | ||
2944 | if (kid->op_sibling) | |
2945 | return too_many_arguments(op); | |
2946 | ||
2947 | return op; | |
2948 | } | |
2949 | ||
2950 | OP * | |
2951 | ck_subr(op) | |
2952 | OP *op; | |
2953 | { | |
93a17b20 LW |
2954 | OP *o = ((cUNOP->op_first->op_sibling) |
2955 | ? cUNOP : ((UNOP*)cUNOP->op_first))->op_first->op_sibling; | |
2956 | ||
2957 | if (o->op_type == OP_RV2CV) { | |
2958 | o->op_type = OP_NULL; /* disable rv2cv */ | |
2959 | o->op_ppaddr = ppaddr[OP_NULL]; | |
2960 | } | |
79072805 | 2961 | op->op_private = 0; |
93a17b20 LW |
2962 | if (perldb) |
2963 | op->op_private |= OPpSUBR_DB; | |
79072805 LW |
2964 | return op; |
2965 | } | |
2966 | ||
2967 | OP * | |
2968 | ck_trunc(op) | |
2969 | OP *op; | |
2970 | { | |
2971 | if (op->op_flags & OPf_KIDS) { | |
2972 | SVOP *kid = (SVOP*)cUNOP->op_first; | |
2973 | ||
2974 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) | |
2975 | op->op_flags |= OPf_SPECIAL; | |
2976 | } | |
2977 | return ck_fun(op); | |
2978 | } | |
2979 | ||
463ee0b2 LW |
2980 | /* A peephole optimizer. We visit the ops in the order they're to execute. */ |
2981 | ||
79072805 LW |
2982 | void |
2983 | peep(op) | |
2984 | register OP* op; | |
2985 | { | |
2986 | register OP* oldop = 0; | |
2987 | if (!op || op->op_seq) | |
2988 | return; | |
2989 | for (; op; op = op->op_next) { | |
2990 | if (op->op_seq) | |
2991 | return; | |
2992 | switch (op->op_type) { | |
2993 | case OP_NULL: | |
2994 | case OP_SCALAR: | |
93a17b20 | 2995 | case OP_LINESEQ: |
463ee0b2 | 2996 | case OP_SCOPE: |
79072805 LW |
2997 | if (oldop) { |
2998 | oldop->op_next = op->op_next; | |
2999 | continue; | |
3000 | } | |
463ee0b2 | 3001 | op->op_seq = ++op_seqmax; |
79072805 LW |
3002 | break; |
3003 | ||
3004 | case OP_GV: | |
463ee0b2 LW |
3005 | if (op->op_next->op_type == OP_RV2SV && |
3006 | op->op_next->op_private < OP_RV2GV) | |
3007 | { | |
79072805 LW |
3008 | op->op_next->op_type = OP_NULL; |
3009 | op->op_next->op_ppaddr = ppaddr[OP_NULL]; | |
93a17b20 | 3010 | op->op_flags |= op->op_next->op_flags & OPf_INTRO; |
79072805 LW |
3011 | op->op_next = op->op_next->op_next; |
3012 | op->op_type = OP_GVSV; | |
3013 | op->op_ppaddr = ppaddr[OP_GVSV]; | |
3014 | } | |
463ee0b2 | 3015 | op->op_seq = ++op_seqmax; |
79072805 LW |
3016 | break; |
3017 | ||
3018 | case OP_GREPWHILE: | |
3019 | case OP_AND: | |
3020 | case OP_OR: | |
463ee0b2 | 3021 | op->op_seq = ++op_seqmax; |
79072805 LW |
3022 | peep(cLOGOP->op_other); |
3023 | break; | |
3024 | ||
3025 | case OP_COND_EXPR: | |
463ee0b2 | 3026 | op->op_seq = ++op_seqmax; |
79072805 LW |
3027 | peep(cCONDOP->op_true); |
3028 | peep(cCONDOP->op_false); | |
3029 | break; | |
3030 | ||
3031 | case OP_ENTERLOOP: | |
463ee0b2 | 3032 | op->op_seq = ++op_seqmax; |
79072805 LW |
3033 | peep(cLOOP->op_redoop); |
3034 | peep(cLOOP->op_nextop); | |
3035 | peep(cLOOP->op_lastop); | |
3036 | break; | |
3037 | ||
3038 | case OP_MATCH: | |
3039 | case OP_SUBST: | |
463ee0b2 | 3040 | op->op_seq = ++op_seqmax; |
79072805 LW |
3041 | peep(cPMOP->op_pmreplroot); |
3042 | break; | |
3043 | ||
3044 | default: | |
463ee0b2 | 3045 | op->op_seq = ++op_seqmax; |
79072805 LW |
3046 | break; |
3047 | } | |
3048 | oldop = op; | |
3049 | } | |
3050 | } |