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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 | { | |
ed6116ce | 78 | PADOFFSET off = pad_alloc(OP_PADSV, SVs_PADMY); |
93a17b20 LW |
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()); |
ed6116ce | 89 | SvPADMY_on(curpad[off]); |
93a17b20 LW |
90 | return off; |
91 | } | |
92 | ||
93 | PADOFFSET | |
94 | pad_findmy(name) | |
95 | char *name; | |
96 | { | |
97 | I32 off; | |
98 | SV *sv; | |
99 | SV **svp = AvARRAY(comppadname); | |
100 | register I32 i; | |
101 | register CONTEXT *cx; | |
102 | bool saweval; | |
103 | AV *curlist; | |
104 | AV *curname; | |
105 | CV *cv; | |
463ee0b2 | 106 | I32 seq = cop_seqmax; |
93a17b20 LW |
107 | |
108 | for (off = comppadnamefill; off > 0; off--) { | |
109 | if ((sv = svp[off]) && | |
463ee0b2 LW |
110 | seq <= SvIVX(sv) && |
111 | seq > (I32)SvNVX(sv) && | |
112 | strEQ(SvPVX(sv), name)) | |
93a17b20 LW |
113 | { |
114 | return (PADOFFSET)off; | |
115 | } | |
116 | } | |
117 | ||
118 | /* Nothing in current lexical context--try eval's context, if any. | |
119 | * This is necessary to let the perldb get at lexically scoped variables. | |
120 | * XXX This will also probably interact badly with eval tree caching. | |
121 | */ | |
122 | ||
123 | saweval = FALSE; | |
124 | for (i = cxstack_ix; i >= 0; i--) { | |
125 | cx = &cxstack[i]; | |
126 | switch (cx->cx_type) { | |
127 | default: | |
128 | break; | |
129 | case CXt_EVAL: | |
130 | saweval = TRUE; | |
131 | break; | |
132 | case CXt_SUB: | |
133 | if (!saweval) | |
134 | return 0; | |
135 | cv = cx->blk_sub.cv; | |
136 | if (debstash && CvSTASH(cv) == debstash) /* ignore DB'* scope */ | |
137 | continue; | |
138 | seq = cxstack[i+1].blk_oldcop->cop_seq; | |
139 | curlist = CvPADLIST(cv); | |
140 | curname = (AV*)*av_fetch(curlist, 0, FALSE); | |
141 | svp = AvARRAY(curname); | |
142 | for (off = AvFILL(curname); off > 0; off--) { | |
143 | if ((sv = svp[off]) && | |
463ee0b2 LW |
144 | seq <= SvIVX(sv) && |
145 | seq > (I32)SvNVX(sv) && | |
146 | strEQ(SvPVX(sv), name)) | |
93a17b20 | 147 | { |
ed6116ce | 148 | PADOFFSET newoff = pad_alloc(OP_PADSV, SVs_PADMY); |
93a17b20 LW |
149 | AV *oldpad = (AV*)*av_fetch(curlist, CvDEPTH(cv), FALSE); |
150 | SV *oldsv = *av_fetch(oldpad, off, TRUE); | |
151 | SV *sv = NEWSV(0,0); | |
152 | sv_upgrade(sv, SVt_PVNV); | |
153 | sv_setpv(sv, name); | |
154 | av_store(comppadname, newoff, sv); | |
463ee0b2 LW |
155 | SvNVX(sv) = (double)curcop->cop_seq; |
156 | SvIVX(sv) = 99999999; | |
93a17b20 LW |
157 | av_store(comppad, newoff, sv_ref(oldsv)); |
158 | return newoff; | |
159 | } | |
160 | } | |
161 | return 0; | |
162 | } | |
163 | } | |
164 | ||
165 | return 0; | |
166 | } | |
167 | ||
168 | void | |
169 | pad_leavemy(fill) | |
170 | I32 fill; | |
171 | { | |
172 | I32 off; | |
173 | SV **svp = AvARRAY(comppadname); | |
174 | SV *sv; | |
175 | for (off = AvFILL(comppadname); off > fill; off--) { | |
176 | if (sv = svp[off]) | |
463ee0b2 | 177 | SvIVX(sv) = cop_seqmax; |
93a17b20 LW |
178 | } |
179 | } | |
180 | ||
181 | PADOFFSET | |
79072805 LW |
182 | pad_alloc(optype,tmptype) |
183 | I32 optype; | |
ed6116ce | 184 | U32 tmptype; |
79072805 LW |
185 | { |
186 | SV *sv; | |
187 | I32 retval; | |
188 | ||
189 | if (AvARRAY(comppad) != curpad) | |
463ee0b2 | 190 | croak("panic: pad_alloc"); |
ed6116ce | 191 | if (tmptype & SVs_PADMY) { |
79072805 LW |
192 | do { |
193 | sv = *av_fetch(comppad, AvFILL(comppad) + 1, TRUE); | |
ed6116ce | 194 | } while (SvPADBUSY(sv)); /* need a fresh one */ |
79072805 LW |
195 | retval = AvFILL(comppad); |
196 | } | |
197 | else { | |
198 | do { | |
199 | sv = *av_fetch(comppad, ++padix, TRUE); | |
ed6116ce | 200 | } while (SvSTORAGE(sv) & (SVs_PADTMP|SVs_PADMY)); |
79072805 LW |
201 | retval = padix; |
202 | } | |
ed6116ce | 203 | SvSTORAGE(sv) |= tmptype; |
79072805 LW |
204 | curpad = AvARRAY(comppad); |
205 | DEBUG_X(fprintf(stderr, "Pad alloc %d for %s\n", retval, op_name[optype])); | |
206 | return (PADOFFSET)retval; | |
207 | } | |
208 | ||
209 | SV * | |
210 | pad_sv(po) | |
211 | PADOFFSET po; | |
212 | { | |
213 | if (!po) | |
463ee0b2 | 214 | croak("panic: pad_sv po"); |
79072805 LW |
215 | DEBUG_X(fprintf(stderr, "Pad sv %d\n", po)); |
216 | return curpad[po]; /* eventually we'll turn this into a macro */ | |
217 | } | |
218 | ||
219 | void | |
220 | pad_free(po) | |
221 | PADOFFSET po; | |
222 | { | |
223 | if (AvARRAY(comppad) != curpad) | |
463ee0b2 | 224 | croak("panic: pad_free curpad"); |
79072805 | 225 | if (!po) |
463ee0b2 | 226 | croak("panic: pad_free po"); |
79072805 LW |
227 | DEBUG_X(fprintf(stderr, "Pad free %d\n", po)); |
228 | if (curpad[po]) | |
ed6116ce | 229 | SvPADTMP_off(curpad[po]); |
79072805 LW |
230 | if (po < padix) |
231 | padix = po - 1; | |
232 | } | |
233 | ||
234 | void | |
235 | pad_swipe(po) | |
236 | PADOFFSET po; | |
237 | { | |
238 | if (AvARRAY(comppad) != curpad) | |
463ee0b2 | 239 | croak("panic: pad_swipe curpad"); |
79072805 | 240 | if (!po) |
463ee0b2 | 241 | croak("panic: pad_swipe po"); |
79072805 LW |
242 | DEBUG_X(fprintf(stderr, "Pad swipe %d\n", po)); |
243 | curpad[po] = NEWSV(0,0); | |
ed6116ce | 244 | SvPADTMP_off(curpad[po]); |
79072805 LW |
245 | if (po < padix) |
246 | padix = po - 1; | |
247 | } | |
248 | ||
249 | void | |
250 | pad_reset() | |
251 | { | |
252 | register I32 po; | |
253 | ||
254 | if (AvARRAY(comppad) != curpad) | |
463ee0b2 | 255 | croak("panic: pad_reset curpad"); |
79072805 LW |
256 | DEBUG_X(fprintf(stderr, "Pad reset\n")); |
257 | for (po = AvMAX(comppad); po > 0; po--) { | |
ed6116ce LW |
258 | if (curpad[po]) |
259 | SvPADTMP_off(curpad[po]); | |
79072805 LW |
260 | } |
261 | padix = 0; | |
262 | } | |
263 | ||
264 | /* Destructor */ | |
265 | ||
266 | void | |
267 | op_free(op) | |
268 | OP *op; | |
269 | { | |
270 | register OP *kid; | |
271 | ||
272 | if (!op) | |
273 | return; | |
274 | ||
275 | if (op->op_flags & OPf_KIDS) { | |
276 | for (kid = cUNOP->op_first; kid; kid = kid->op_sibling) | |
277 | op_free(kid); | |
278 | } | |
279 | ||
280 | if (op->op_targ > 0) | |
281 | pad_free(op->op_targ); | |
282 | ||
283 | switch (op->op_type) { | |
463ee0b2 | 284 | case OP_GVSV: |
79072805 | 285 | case OP_GV: |
463ee0b2 | 286 | sv_free((SV*)cGVOP->op_gv); |
79072805 LW |
287 | break; |
288 | case OP_CONST: | |
289 | sv_free(cSVOP->op_sv); | |
290 | break; | |
291 | } | |
292 | ||
293 | Safefree(op); | |
294 | } | |
295 | ||
296 | /* Contextualizers */ | |
297 | ||
463ee0b2 | 298 | #define LINKLIST(o) ((o)->op_next ? (o)->op_next : linklist((OP*)o)) |
79072805 LW |
299 | |
300 | OP * | |
301 | linklist(op) | |
302 | OP *op; | |
303 | { | |
304 | register OP *kid; | |
305 | ||
306 | if (op->op_next) | |
307 | return op->op_next; | |
308 | ||
309 | /* establish postfix order */ | |
310 | if (cUNOP->op_first) { | |
311 | op->op_next = LINKLIST(cUNOP->op_first); | |
312 | for (kid = cUNOP->op_first; kid; kid = kid->op_sibling) { | |
313 | if (kid->op_sibling) | |
314 | kid->op_next = LINKLIST(kid->op_sibling); | |
315 | else | |
316 | kid->op_next = op; | |
317 | } | |
318 | } | |
319 | else | |
320 | op->op_next = op; | |
321 | ||
322 | return op->op_next; | |
323 | } | |
324 | ||
325 | OP * | |
326 | scalarkids(op) | |
327 | OP *op; | |
328 | { | |
329 | OP *kid; | |
330 | if (op && op->op_flags & OPf_KIDS) { | |
331 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
332 | scalar(kid); | |
333 | } | |
334 | return op; | |
335 | } | |
336 | ||
337 | OP * | |
338 | scalar(op) | |
339 | OP *op; | |
340 | { | |
341 | OP *kid; | |
342 | ||
343 | if (!op || (op->op_flags & OPf_KNOW)) /* assumes no premature commitment */ | |
344 | return op; | |
345 | ||
346 | op->op_flags &= ~OPf_LIST; | |
347 | op->op_flags |= OPf_KNOW; | |
348 | ||
349 | switch (op->op_type) { | |
350 | case OP_REPEAT: | |
351 | scalar(cBINOP->op_first); | |
352 | return op; | |
353 | case OP_OR: | |
354 | case OP_AND: | |
355 | case OP_COND_EXPR: | |
356 | break; | |
357 | default: | |
358 | case OP_MATCH: | |
359 | case OP_SUBST: | |
360 | case OP_NULL: | |
361 | if (!(op->op_flags & OPf_KIDS)) | |
362 | return op; | |
363 | break; | |
463ee0b2 | 364 | case OP_SCOPE: |
79072805 LW |
365 | case OP_LEAVE: |
366 | case OP_LEAVETRY: | |
367 | case OP_LINESEQ: | |
368 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) { | |
369 | if (kid->op_sibling) | |
370 | scalarvoid(kid); | |
371 | else | |
372 | scalar(kid); | |
373 | } | |
93a17b20 | 374 | curcop = &compiling; |
79072805 LW |
375 | return op; |
376 | case OP_LIST: | |
377 | op = prepend_elem(OP_LIST, newOP(OP_PUSHMARK, 0), op); | |
378 | break; | |
379 | } | |
380 | for (kid = cUNOP->op_first->op_sibling; kid; kid = kid->op_sibling) | |
381 | scalar(kid); | |
382 | return op; | |
383 | } | |
384 | ||
385 | OP * | |
386 | scalarvoid(op) | |
387 | OP *op; | |
388 | { | |
389 | OP *kid; | |
390 | ||
391 | if (!op) | |
392 | return op; | |
393 | if (op->op_flags & OPf_LIST) | |
394 | return op; | |
395 | ||
396 | op->op_flags |= OPf_KNOW; | |
397 | ||
398 | switch (op->op_type) { | |
399 | default: | |
463ee0b2 LW |
400 | if (dowarn && (opargs[op->op_type] & OA_FOLDCONST) && |
401 | !(op->op_flags & OPf_STACKED)) | |
93a17b20 | 402 | warn("Useless use of %s", op_name[op->op_type]); |
79072805 LW |
403 | return op; |
404 | ||
93a17b20 LW |
405 | case OP_NEXTSTATE: |
406 | curcop = ((COP*)op); /* for warning above */ | |
407 | break; | |
408 | ||
79072805 LW |
409 | case OP_CONST: |
410 | op->op_type = OP_NULL; /* don't execute a constant */ | |
411 | sv_free(cSVOP->op_sv); /* don't even remember it */ | |
412 | break; | |
413 | ||
414 | case OP_POSTINC: | |
415 | op->op_type = OP_PREINC; | |
416 | op->op_ppaddr = ppaddr[OP_PREINC]; | |
417 | break; | |
418 | ||
419 | case OP_POSTDEC: | |
420 | op->op_type = OP_PREDEC; | |
421 | op->op_ppaddr = ppaddr[OP_PREDEC]; | |
422 | break; | |
423 | ||
424 | case OP_REPEAT: | |
425 | scalarvoid(cBINOP->op_first); | |
426 | break; | |
427 | case OP_OR: | |
428 | case OP_AND: | |
429 | case OP_COND_EXPR: | |
430 | for (kid = cUNOP->op_first->op_sibling; kid; kid = kid->op_sibling) | |
431 | scalarvoid(kid); | |
432 | break; | |
433 | case OP_ENTERTRY: | |
434 | case OP_ENTER: | |
435 | case OP_SCALAR: | |
436 | case OP_NULL: | |
437 | if (!(op->op_flags & OPf_KIDS)) | |
438 | break; | |
463ee0b2 | 439 | case OP_SCOPE: |
79072805 LW |
440 | case OP_LEAVE: |
441 | case OP_LEAVETRY: | |
442 | case OP_LINESEQ: | |
443 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
444 | scalarvoid(kid); | |
445 | break; | |
446 | case OP_LIST: | |
447 | op = prepend_elem(OP_LIST, newOP(OP_PUSHMARK, 0), op); | |
448 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
449 | scalarvoid(kid); | |
450 | break; | |
451 | } | |
452 | return op; | |
453 | } | |
454 | ||
455 | OP * | |
456 | listkids(op) | |
457 | OP *op; | |
458 | { | |
459 | OP *kid; | |
460 | if (op && op->op_flags & OPf_KIDS) { | |
461 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
462 | list(kid); | |
463 | } | |
464 | return op; | |
465 | } | |
466 | ||
467 | OP * | |
468 | list(op) | |
469 | OP *op; | |
470 | { | |
471 | OP *kid; | |
472 | ||
473 | if (!op || (op->op_flags & OPf_KNOW)) /* assumes no premature commitment */ | |
474 | return op; | |
475 | ||
476 | op->op_flags |= (OPf_KNOW | OPf_LIST); | |
477 | ||
478 | switch (op->op_type) { | |
479 | case OP_FLOP: | |
480 | case OP_REPEAT: | |
481 | list(cBINOP->op_first); | |
482 | break; | |
483 | case OP_OR: | |
484 | case OP_AND: | |
485 | case OP_COND_EXPR: | |
486 | for (kid = cUNOP->op_first->op_sibling; kid; kid = kid->op_sibling) | |
487 | list(kid); | |
488 | break; | |
489 | default: | |
490 | case OP_MATCH: | |
491 | case OP_SUBST: | |
492 | case OP_NULL: | |
493 | if (!(op->op_flags & OPf_KIDS)) | |
494 | break; | |
495 | if (!op->op_next && cUNOP->op_first->op_type == OP_FLOP) { | |
496 | list(cBINOP->op_first); | |
497 | return gen_constant_list(op); | |
498 | } | |
499 | case OP_LIST: | |
500 | listkids(op); | |
501 | break; | |
463ee0b2 | 502 | case OP_SCOPE: |
79072805 LW |
503 | case OP_LEAVE: |
504 | case OP_LEAVETRY: | |
505 | case OP_LINESEQ: | |
506 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) { | |
507 | if (kid->op_sibling) | |
508 | scalarvoid(kid); | |
509 | else | |
510 | list(kid); | |
511 | } | |
93a17b20 | 512 | curcop = &compiling; |
79072805 LW |
513 | break; |
514 | } | |
515 | return op; | |
516 | } | |
517 | ||
ed6116ce LW |
518 | static OP * |
519 | guess_mark(op) | |
520 | OP *op; | |
521 | { | |
522 | if (op->op_type == OP_LIST && | |
523 | (!cLISTOP->op_first || | |
524 | cLISTOP->op_first->op_type != OP_PUSHMARK)) | |
525 | { | |
526 | op = prepend_elem(OP_LIST, newOP(OP_PUSHMARK, 0), op); | |
527 | op->op_private |= OPpLIST_GUESSED; | |
528 | } | |
529 | return op; | |
530 | } | |
531 | ||
79072805 LW |
532 | OP * |
533 | scalarseq(op) | |
534 | OP *op; | |
535 | { | |
536 | OP *kid; | |
ed6116ce | 537 | OP **prev; |
79072805 | 538 | |
463ee0b2 LW |
539 | if (op) { |
540 | if (op->op_type == OP_LINESEQ || | |
541 | op->op_type == OP_SCOPE || | |
79072805 | 542 | op->op_type == OP_LEAVE || |
463ee0b2 LW |
543 | op->op_type == OP_LEAVETRY) |
544 | { | |
ed6116ce | 545 | prev = &cLISTOP->op_first; |
463ee0b2 | 546 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) { |
ed6116ce | 547 | if (kid->op_sibling) { |
463ee0b2 | 548 | scalarvoid(kid); |
ed6116ce LW |
549 | prev = &kid->op_sibling; |
550 | } | |
551 | else | |
552 | *prev = guess_mark(kid); | |
463ee0b2 LW |
553 | } |
554 | curcop = &compiling; | |
79072805 | 555 | } |
463ee0b2 LW |
556 | op->op_flags &= ~OPf_PARENS; |
557 | if (needblockscope) | |
558 | op->op_flags |= OPf_PARENS; | |
79072805 LW |
559 | } |
560 | return op; | |
561 | } | |
562 | ||
563 | OP * | |
463ee0b2 | 564 | modkids(op, type) |
79072805 LW |
565 | OP *op; |
566 | I32 type; | |
567 | { | |
568 | OP *kid; | |
569 | if (op && op->op_flags & OPf_KIDS) { | |
570 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
463ee0b2 | 571 | mod(kid, type); |
79072805 LW |
572 | } |
573 | return op; | |
574 | } | |
575 | ||
463ee0b2 | 576 | static I32 modcount; |
79072805 LW |
577 | |
578 | OP * | |
463ee0b2 | 579 | mod(op, type) |
79072805 LW |
580 | OP *op; |
581 | I32 type; | |
582 | { | |
583 | OP *kid; | |
584 | SV *sv; | |
585 | ||
586 | if (!op) | |
587 | return op; | |
588 | ||
589 | switch (op->op_type) { | |
590 | case OP_ENTERSUBR: | |
591 | if ((type == OP_DEFINED || type == OP_UNDEF || type == OP_REFGEN) && | |
592 | !(op->op_flags & OPf_STACKED)) { | |
93a17b20 LW |
593 | op->op_type = OP_RV2CV; /* entersubr => rv2cv */ |
594 | op->op_ppaddr = ppaddr[OP_RV2CV]; | |
595 | cUNOP->op_first->op_type = OP_NULL; /* disable pushmark */ | |
596 | cUNOP->op_first->op_ppaddr = ppaddr[OP_NULL]; | |
79072805 LW |
597 | break; |
598 | } | |
599 | /* FALL THROUGH */ | |
600 | default: | |
601 | if (type == OP_DEFINED) | |
602 | return scalar(op); /* ordinary expression, not lvalue */ | |
603 | sprintf(tokenbuf, "Can't %s %s in %s", | |
604 | type == OP_REFGEN ? "refer to" : "modify", | |
605 | op_name[op->op_type], | |
606 | type ? op_name[type] : "local"); | |
607 | yyerror(tokenbuf); | |
608 | return op; | |
609 | ||
610 | case OP_COND_EXPR: | |
611 | for (kid = cUNOP->op_first->op_sibling; kid; kid = kid->op_sibling) | |
463ee0b2 | 612 | mod(kid, type); |
79072805 LW |
613 | break; |
614 | ||
615 | case OP_RV2AV: | |
616 | case OP_RV2HV: | |
617 | case OP_RV2GV: | |
93a17b20 | 618 | ref(cUNOP->op_first, op->op_type); |
79072805 LW |
619 | /* FALL THROUGH */ |
620 | case OP_AASSIGN: | |
621 | case OP_ASLICE: | |
622 | case OP_HSLICE: | |
93a17b20 LW |
623 | case OP_NEXTSTATE: |
624 | case OP_DBSTATE: | |
463ee0b2 | 625 | modcount = 10000; |
79072805 | 626 | break; |
463ee0b2 LW |
627 | case OP_RV2SV: |
628 | if (type == OP_RV2AV || type == OP_RV2HV) | |
629 | op->op_private = type; | |
630 | /* FALL THROUGH */ | |
93a17b20 LW |
631 | case OP_PADSV: |
632 | case OP_PADAV: | |
633 | case OP_PADHV: | |
79072805 LW |
634 | case OP_UNDEF: |
635 | case OP_GV: | |
463ee0b2 LW |
636 | case OP_AV2ARYLEN: |
637 | case OP_SASSIGN: | |
638 | case OP_REFGEN: | |
639 | case OP_ANONLIST: | |
640 | case OP_ANONHASH: | |
641 | modcount++; | |
642 | break; | |
643 | ||
644 | case OP_PUSHMARK: | |
645 | break; | |
646 | ||
647 | case OP_SUBSTR: | |
648 | case OP_VEC: | |
ed6116ce | 649 | op->op_targ = pad_alloc(op->op_type, SVs_PADMY); |
463ee0b2 LW |
650 | sv = PAD_SV(op->op_targ); |
651 | sv_upgrade(sv, SVt_PVLV); | |
652 | sv_magic(sv, 0, op->op_type == OP_VEC ? 'v' : 'x', 0, 0); | |
653 | curpad[op->op_targ] = sv; | |
654 | /* FALL THROUGH */ | |
655 | case OP_NULL: | |
656 | if (!(op->op_flags & OPf_KIDS)) | |
657 | croak("panic: mod"); | |
658 | mod(cBINOP->op_first, type ? type : op->op_type); | |
659 | break; | |
660 | case OP_AELEM: | |
661 | case OP_HELEM: | |
662 | mod(cBINOP->op_first, type ? type : op->op_type); | |
663 | if (type == OP_RV2AV || type == OP_RV2HV) | |
664 | op->op_private = type; | |
665 | break; | |
666 | ||
667 | case OP_SCOPE: | |
668 | case OP_LEAVE: | |
669 | case OP_ENTER: | |
670 | if (type != OP_RV2HV && type != OP_RV2AV) | |
671 | break; | |
672 | if (!(op->op_flags & OPf_KIDS)) | |
673 | break; | |
674 | /* FALL THROUGH */ | |
675 | case OP_LIST: | |
676 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
677 | mod(kid, type); | |
678 | break; | |
679 | } | |
680 | op->op_flags |= OPf_LVAL; | |
681 | if (!type) { | |
682 | op->op_flags &= ~OPf_SPECIAL; | |
683 | op->op_flags |= OPf_INTRO; | |
684 | } | |
685 | else if (type == OP_AASSIGN || type == OP_SASSIGN) | |
686 | op->op_flags |= OPf_SPECIAL; | |
687 | return op; | |
688 | } | |
689 | ||
690 | OP * | |
691 | refkids(op, type) | |
692 | OP *op; | |
693 | I32 type; | |
694 | { | |
695 | OP *kid; | |
696 | if (op && op->op_flags & OPf_KIDS) { | |
697 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
698 | ref(kid, type); | |
699 | } | |
700 | return op; | |
701 | } | |
702 | ||
703 | OP * | |
704 | ref(op, type) | |
705 | OP *op; | |
706 | I32 type; | |
707 | { | |
708 | OP *kid; | |
709 | SV *sv; | |
710 | ||
711 | if (!op) | |
712 | return op; | |
713 | ||
714 | switch (op->op_type) { | |
715 | default: | |
716 | sprintf(tokenbuf, "Can't use %s as reference in %s", | |
717 | op_name[op->op_type], | |
718 | type ? op_name[type] : "local"); | |
719 | yyerror(tokenbuf); | |
720 | return op; | |
721 | ||
722 | case OP_COND_EXPR: | |
723 | for (kid = cUNOP->op_first->op_sibling; kid; kid = kid->op_sibling) | |
724 | ref(kid, type); | |
725 | break; | |
726 | ||
727 | case OP_RV2AV: | |
728 | case OP_RV2HV: | |
729 | case OP_RV2GV: | |
730 | ref(cUNOP->op_first, op->op_type); | |
731 | /* FALL THROUGH */ | |
732 | case OP_AASSIGN: | |
733 | case OP_ASLICE: | |
734 | case OP_HSLICE: | |
735 | case OP_NEXTSTATE: | |
736 | case OP_DBSTATE: | |
737 | case OP_ENTERSUBR: | |
738 | break; | |
79072805 | 739 | case OP_RV2SV: |
463ee0b2 LW |
740 | if (type == OP_RV2AV || type == OP_RV2HV) |
741 | op->op_private = type; | |
742 | /* FALL THROUGH */ | |
743 | case OP_PADSV: | |
744 | case OP_PADAV: | |
745 | case OP_PADHV: | |
746 | case OP_UNDEF: | |
747 | case OP_GV: | |
79072805 LW |
748 | case OP_AV2ARYLEN: |
749 | case OP_SASSIGN: | |
750 | case OP_REFGEN: | |
751 | case OP_ANONLIST: | |
752 | case OP_ANONHASH: | |
79072805 LW |
753 | break; |
754 | ||
755 | case OP_PUSHMARK: | |
756 | break; | |
757 | ||
758 | case OP_SUBSTR: | |
759 | case OP_VEC: | |
ed6116ce | 760 | op->op_targ = pad_alloc(op->op_type, SVs_PADMY); |
79072805 LW |
761 | sv = PAD_SV(op->op_targ); |
762 | sv_upgrade(sv, SVt_PVLV); | |
763 | sv_magic(sv, 0, op->op_type == OP_VEC ? 'v' : 'x', 0, 0); | |
764 | curpad[op->op_targ] = sv; | |
765 | /* FALL THROUGH */ | |
766 | case OP_NULL: | |
767 | if (!(op->op_flags & OPf_KIDS)) | |
463ee0b2 | 768 | break; |
79072805 LW |
769 | ref(cBINOP->op_first, type ? type : op->op_type); |
770 | break; | |
771 | case OP_AELEM: | |
772 | case OP_HELEM: | |
773 | ref(cBINOP->op_first, type ? type : op->op_type); | |
93a17b20 LW |
774 | if (type == OP_RV2AV || type == OP_RV2HV) |
775 | op->op_private = type; | |
79072805 LW |
776 | break; |
777 | ||
463ee0b2 | 778 | case OP_SCOPE: |
79072805 LW |
779 | case OP_LEAVE: |
780 | case OP_ENTER: | |
781 | if (type != OP_RV2HV && type != OP_RV2AV) | |
782 | break; | |
783 | if (!(op->op_flags & OPf_KIDS)) | |
784 | break; | |
785 | /* FALL THROUGH */ | |
786 | case OP_LIST: | |
787 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
788 | ref(kid, type); | |
789 | break; | |
790 | } | |
791 | op->op_flags |= OPf_LVAL; | |
792 | if (!type) { | |
793 | op->op_flags &= ~OPf_SPECIAL; | |
93a17b20 | 794 | op->op_flags |= OPf_INTRO; |
79072805 LW |
795 | } |
796 | else if (type == OP_AASSIGN || type == OP_SASSIGN) | |
797 | op->op_flags |= OPf_SPECIAL; | |
798 | return op; | |
799 | } | |
800 | ||
801 | OP * | |
93a17b20 LW |
802 | my(op) |
803 | OP *op; | |
804 | { | |
805 | OP *kid; | |
806 | SV *sv; | |
807 | I32 type; | |
808 | ||
809 | if (!op) | |
810 | return op; | |
811 | ||
812 | type = op->op_type; | |
813 | if (type == OP_LIST) { | |
814 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
815 | my(kid); | |
816 | } | |
817 | else if (type != OP_PADSV && | |
818 | type != OP_PADAV && | |
819 | type != OP_PADHV && | |
820 | type != OP_PUSHMARK) | |
821 | { | |
822 | sprintf(tokenbuf, "Can't declare %s in my", op_name[op->op_type]); | |
823 | yyerror(tokenbuf); | |
824 | return op; | |
825 | } | |
826 | op->op_flags |= OPf_LVAL|OPf_INTRO; | |
827 | return op; | |
828 | } | |
829 | ||
830 | OP * | |
79072805 LW |
831 | sawparens(o) |
832 | OP *o; | |
833 | { | |
834 | if (o) | |
835 | o->op_flags |= OPf_PARENS; | |
836 | return o; | |
837 | } | |
838 | ||
839 | OP * | |
840 | bind_match(type, left, right) | |
841 | I32 type; | |
842 | OP *left; | |
843 | OP *right; | |
844 | { | |
845 | OP *op; | |
846 | ||
847 | if (right->op_type == OP_MATCH || | |
848 | right->op_type == OP_SUBST || | |
849 | right->op_type == OP_TRANS) { | |
850 | right->op_flags |= OPf_STACKED; | |
851 | if (right->op_type != OP_MATCH) | |
463ee0b2 | 852 | left = mod(left, right->op_type); |
79072805 LW |
853 | if (right->op_type == OP_TRANS) |
854 | op = newBINOP(OP_NULL, 0, scalar(left), right); | |
855 | else | |
856 | op = prepend_elem(right->op_type, scalar(left), right); | |
857 | if (type == OP_NOT) | |
858 | return newUNOP(OP_NOT, 0, scalar(op)); | |
859 | return op; | |
860 | } | |
861 | else | |
862 | return bind_match(type, left, | |
863 | pmruntime(newPMOP(OP_MATCH, 0), right, Nullop)); | |
864 | } | |
865 | ||
866 | OP * | |
867 | invert(op) | |
868 | OP *op; | |
869 | { | |
870 | if (!op) | |
871 | return op; | |
872 | /* XXX need to optimize away NOT NOT here? Or do we let optimizer do it? */ | |
873 | return newUNOP(OP_NOT, OPf_SPECIAL, scalar(op)); | |
874 | } | |
875 | ||
876 | OP * | |
877 | scope(o) | |
878 | OP *o; | |
879 | { | |
880 | if (o) { | |
463ee0b2 LW |
881 | if (o->op_flags & OPf_PARENS) { |
882 | o = prepend_elem(OP_LINESEQ, newOP(OP_ENTER, 0), o); | |
883 | o->op_type = OP_LEAVE; | |
884 | o->op_ppaddr = ppaddr[OP_LEAVE]; | |
885 | } | |
886 | else { | |
887 | if (o->op_type == OP_LINESEQ) { | |
888 | OP *kid; | |
889 | o->op_type = OP_SCOPE; | |
890 | o->op_ppaddr = ppaddr[OP_SCOPE]; | |
891 | kid = ((LISTOP*)o)->op_first; | |
892 | if (kid->op_type == OP_NEXTSTATE) { | |
893 | kid->op_type = OP_NULL; | |
894 | kid->op_ppaddr = ppaddr[OP_NULL]; | |
895 | } | |
896 | } | |
897 | else | |
898 | o = newUNOP(OP_SCOPE, 0, o); | |
899 | } | |
79072805 LW |
900 | } |
901 | return o; | |
902 | } | |
903 | ||
904 | OP * | |
905 | block_head(o, startp) | |
906 | OP *o; | |
907 | OP **startp; | |
908 | { | |
909 | if (!o) { | |
910 | *startp = 0; | |
911 | return o; | |
912 | } | |
463ee0b2 | 913 | o = scope(scalarseq(o)); |
79072805 LW |
914 | *startp = LINKLIST(o); |
915 | o->op_next = 0; | |
916 | peep(*startp); | |
917 | return o; | |
918 | } | |
919 | ||
920 | OP * | |
93a17b20 | 921 | localize(o, lex) |
79072805 | 922 | OP *o; |
93a17b20 | 923 | I32 lex; |
79072805 LW |
924 | { |
925 | if (o->op_flags & OPf_PARENS) | |
926 | list(o); | |
927 | else | |
928 | scalar(o); | |
93a17b20 LW |
929 | in_my = FALSE; |
930 | if (lex) | |
931 | return my(o); | |
932 | else | |
463ee0b2 | 933 | return mod(o, OP_NULL); /* a bit kludgey */ |
79072805 LW |
934 | } |
935 | ||
936 | OP * | |
937 | jmaybe(o) | |
938 | OP *o; | |
939 | { | |
940 | if (o->op_type == OP_LIST) { | |
941 | o = convert(OP_JOIN, 0, | |
942 | prepend_elem(OP_LIST, | |
943 | newSVREF(newGVOP(OP_GV, 0, gv_fetchpv(";", TRUE))), | |
944 | o)); | |
945 | } | |
946 | return o; | |
947 | } | |
948 | ||
949 | OP * | |
950 | fold_constants(o) | |
951 | register OP *o; | |
952 | { | |
953 | register OP *curop; | |
954 | I32 type = o->op_type; | |
955 | SV *sv; | |
956 | ||
957 | if (opargs[type] & OA_RETSCALAR) | |
958 | scalar(o); | |
959 | if (opargs[type] & OA_TARGET) | |
ed6116ce | 960 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 LW |
961 | |
962 | if (!(opargs[type] & OA_FOLDCONST)) | |
963 | goto nope; | |
964 | ||
965 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { | |
93a17b20 LW |
966 | if (curop->op_type != OP_CONST && |
967 | curop->op_type != OP_LIST && | |
968 | curop->op_type != OP_SCALAR && | |
969 | curop->op_type != OP_PUSHMARK) { | |
79072805 LW |
970 | goto nope; |
971 | } | |
972 | } | |
973 | ||
974 | curop = LINKLIST(o); | |
975 | o->op_next = 0; | |
976 | op = curop; | |
977 | run(); | |
978 | if (o->op_targ && *stack_sp == PAD_SV(o->op_targ)) | |
979 | pad_swipe(o->op_targ); | |
980 | op_free(o); | |
981 | if (type == OP_RV2GV) | |
982 | return newGVOP(OP_GV, 0, *(stack_sp--)); | |
983 | else | |
984 | return newSVOP(OP_CONST, 0, *(stack_sp--)); | |
985 | ||
986 | nope: | |
987 | if (!(opargs[type] & OA_OTHERINT)) | |
988 | return o; | |
989 | if (!(o->op_flags & OPf_KIDS)) | |
990 | return o; | |
991 | ||
992 | for (curop = ((UNOP*)o)->op_first; curop; curop = curop->op_sibling) { | |
993 | if (curop->op_type == OP_CONST) { | |
994 | if (SvIOK(((SVOP*)curop)->op_sv)) | |
995 | continue; | |
996 | return o; | |
997 | } | |
998 | if (opargs[curop->op_type] & OA_RETINTEGER) | |
999 | continue; | |
1000 | return o; | |
1001 | } | |
1002 | ||
1003 | o->op_ppaddr = ppaddr[++(o->op_type)]; | |
1004 | return o; | |
1005 | } | |
1006 | ||
1007 | OP * | |
1008 | gen_constant_list(o) | |
1009 | register OP *o; | |
1010 | { | |
1011 | register OP *curop; | |
1012 | OP *anonop; | |
1013 | I32 tmpmark; | |
1014 | I32 tmpsp; | |
1015 | I32 oldtmps_floor = tmps_floor; | |
1016 | AV *av; | |
1017 | GV *gv; | |
1018 | ||
1019 | tmpmark = stack_sp - stack_base; | |
1020 | anonop = newANONLIST(o); | |
1021 | curop = LINKLIST(anonop); | |
1022 | anonop->op_next = 0; | |
1023 | op = curop; | |
1024 | run(); | |
1025 | tmpsp = stack_sp - stack_base; | |
1026 | tmps_floor = oldtmps_floor; | |
1027 | stack_sp = stack_base + tmpmark; | |
1028 | ||
1029 | o->op_type = OP_RV2AV; | |
1030 | o->op_ppaddr = ppaddr[OP_RV2AV]; | |
1031 | o->op_sibling = 0; | |
1032 | curop = ((UNOP*)o)->op_first; | |
1033 | ((UNOP*)o)->op_first = newSVOP(OP_CONST, 0, newSVsv(stack_sp[1])); | |
1034 | op_free(curop); | |
1035 | curop = ((UNOP*)anonop)->op_first; | |
1036 | curop = ((UNOP*)curop)->op_first; | |
1037 | curop->op_sibling = 0; | |
1038 | op_free(anonop); | |
1039 | o->op_next = 0; | |
1040 | linklist(o); | |
1041 | return list(o); | |
1042 | } | |
1043 | ||
1044 | OP * | |
1045 | convert(type, flags, op) | |
1046 | I32 type; | |
1047 | I32 flags; | |
1048 | OP* op; | |
1049 | { | |
1050 | OP *kid; | |
1051 | OP *last; | |
1052 | ||
1053 | if (opargs[type] & OA_MARK) | |
1054 | op = prepend_elem(OP_LIST, newOP(OP_PUSHMARK, 0), op); | |
1055 | ||
1056 | if (!op || op->op_type != OP_LIST) | |
1057 | op = newLISTOP(OP_LIST, 0, op, Nullop); | |
1058 | ||
1059 | op->op_type = type; | |
1060 | op->op_ppaddr = ppaddr[type]; | |
1061 | op->op_flags |= flags; | |
1062 | ||
1063 | op = (*check[type])(op); | |
1064 | if (op->op_type != type) | |
1065 | return op; | |
1066 | ||
1067 | if (cLISTOP->op_children < 7) { | |
1068 | /* XXX do we really need to do this if we're done appending?? */ | |
1069 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
1070 | last = kid; | |
1071 | cLISTOP->op_last = last; /* in case check substituted last arg */ | |
1072 | } | |
1073 | ||
1074 | return fold_constants(op); | |
1075 | } | |
1076 | ||
1077 | /* List constructors */ | |
1078 | ||
1079 | OP * | |
1080 | append_elem(type, first, last) | |
1081 | I32 type; | |
1082 | OP* first; | |
1083 | OP* last; | |
1084 | { | |
1085 | if (!first) | |
1086 | return last; | |
1087 | else if (!last) | |
1088 | return first; | |
1089 | else if (first->op_type == type) { | |
1090 | if (first->op_flags & OPf_KIDS) | |
1091 | ((LISTOP*)first)->op_last->op_sibling = last; | |
1092 | else { | |
1093 | first->op_flags |= OPf_KIDS; | |
1094 | ((LISTOP*)first)->op_first = last; | |
1095 | } | |
1096 | ((LISTOP*)first)->op_last = last; | |
1097 | ((LISTOP*)first)->op_children++; | |
1098 | return first; | |
1099 | } | |
1100 | ||
1101 | return newLISTOP(type, 0, first, last); | |
1102 | } | |
1103 | ||
1104 | OP * | |
1105 | append_list(type, first, last) | |
1106 | I32 type; | |
1107 | LISTOP* first; | |
1108 | LISTOP* last; | |
1109 | { | |
1110 | if (!first) | |
1111 | return (OP*)last; | |
1112 | else if (!last) | |
1113 | return (OP*)first; | |
1114 | else if (first->op_type != type) | |
1115 | return prepend_elem(type, (OP*)first, (OP*)last); | |
1116 | else if (last->op_type != type) | |
1117 | return append_elem(type, (OP*)first, (OP*)last); | |
1118 | ||
1119 | first->op_last->op_sibling = last->op_first; | |
1120 | first->op_last = last->op_last; | |
1121 | first->op_children += last->op_children; | |
1122 | if (first->op_children) | |
1123 | last->op_flags |= OPf_KIDS; | |
1124 | ||
1125 | Safefree(last); | |
1126 | return (OP*)first; | |
1127 | } | |
1128 | ||
1129 | OP * | |
1130 | prepend_elem(type, first, last) | |
1131 | I32 type; | |
1132 | OP* first; | |
1133 | OP* last; | |
1134 | { | |
1135 | if (!first) | |
1136 | return last; | |
1137 | else if (!last) | |
1138 | return first; | |
1139 | else if (last->op_type == type) { | |
1140 | if (!(last->op_flags & OPf_KIDS)) { | |
1141 | ((LISTOP*)last)->op_last = first; | |
1142 | last->op_flags |= OPf_KIDS; | |
1143 | } | |
1144 | first->op_sibling = ((LISTOP*)last)->op_first; | |
1145 | ((LISTOP*)last)->op_first = first; | |
1146 | ((LISTOP*)last)->op_children++; | |
1147 | return last; | |
1148 | } | |
1149 | ||
1150 | return newLISTOP(type, 0, first, last); | |
1151 | } | |
1152 | ||
1153 | /* Constructors */ | |
1154 | ||
1155 | OP * | |
1156 | newNULLLIST() | |
1157 | { | |
1158 | return Nullop; | |
1159 | } | |
1160 | ||
1161 | OP * | |
1162 | newLISTOP(type, flags, first, last) | |
1163 | I32 type; | |
1164 | I32 flags; | |
1165 | OP* first; | |
1166 | OP* last; | |
1167 | { | |
1168 | LISTOP *listop; | |
1169 | ||
1170 | Newz(1101, listop, 1, LISTOP); | |
1171 | ||
1172 | listop->op_type = type; | |
1173 | listop->op_ppaddr = ppaddr[type]; | |
1174 | listop->op_children = (first != 0) + (last != 0); | |
1175 | listop->op_flags = flags; | |
1176 | if (listop->op_children) | |
1177 | listop->op_flags |= OPf_KIDS; | |
1178 | ||
1179 | if (!last && first) | |
1180 | last = first; | |
1181 | else if (!first && last) | |
1182 | first = last; | |
1183 | listop->op_first = first; | |
1184 | listop->op_last = last; | |
1185 | if (first && first != last) | |
1186 | first->op_sibling = last; | |
1187 | ||
1188 | return (OP*)listop; | |
1189 | } | |
1190 | ||
1191 | OP * | |
1192 | newOP(type, flags) | |
1193 | I32 type; | |
1194 | I32 flags; | |
1195 | { | |
1196 | OP *op; | |
1197 | Newz(1101, op, 1, OP); | |
1198 | op->op_type = type; | |
1199 | op->op_ppaddr = ppaddr[type]; | |
1200 | op->op_flags = flags; | |
1201 | ||
1202 | op->op_next = op; | |
1203 | /* op->op_private = 0; */ | |
1204 | if (opargs[type] & OA_RETSCALAR) | |
1205 | scalar(op); | |
1206 | if (opargs[type] & OA_TARGET) | |
ed6116ce | 1207 | op->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 LW |
1208 | return (*check[type])(op); |
1209 | } | |
1210 | ||
1211 | OP * | |
1212 | newUNOP(type, flags, first) | |
1213 | I32 type; | |
1214 | I32 flags; | |
1215 | OP* first; | |
1216 | { | |
1217 | UNOP *unop; | |
1218 | ||
1219 | if (opargs[type] & OA_MARK) { | |
1220 | if (first->op_type == OP_LIST) | |
1221 | prepend_elem(OP_LIST, newOP(OP_PUSHMARK, 0), first); | |
1222 | else | |
1223 | return newBINOP(type, flags, newOP(OP_PUSHMARK, 0), first); | |
1224 | } | |
1225 | ||
93a17b20 LW |
1226 | if (!first) |
1227 | first = newOP(OP_STUB, 0); | |
1228 | ||
79072805 LW |
1229 | Newz(1101, unop, 1, UNOP); |
1230 | unop->op_type = type; | |
1231 | unop->op_ppaddr = ppaddr[type]; | |
1232 | unop->op_first = first; | |
1233 | unop->op_flags = flags | OPf_KIDS; | |
1234 | unop->op_private = 1; | |
1235 | ||
1236 | unop = (UNOP*)(*check[type])((OP*)unop); | |
1237 | if (unop->op_next) | |
1238 | return (OP*)unop; | |
1239 | ||
1240 | return fold_constants(unop); | |
1241 | } | |
1242 | ||
1243 | OP * | |
1244 | newBINOP(type, flags, first, last) | |
1245 | I32 type; | |
1246 | I32 flags; | |
1247 | OP* first; | |
1248 | OP* last; | |
1249 | { | |
1250 | BINOP *binop; | |
1251 | Newz(1101, binop, 1, BINOP); | |
1252 | ||
1253 | if (!first) | |
1254 | first = newOP(OP_NULL, 0); | |
1255 | ||
1256 | binop->op_type = type; | |
1257 | binop->op_ppaddr = ppaddr[type]; | |
1258 | binop->op_first = first; | |
1259 | binop->op_flags = flags | OPf_KIDS; | |
1260 | if (!last) { | |
1261 | last = first; | |
1262 | binop->op_private = 1; | |
1263 | } | |
1264 | else { | |
1265 | binop->op_private = 2; | |
1266 | first->op_sibling = last; | |
1267 | } | |
1268 | ||
1269 | binop = (BINOP*)(*check[type])((OP*)binop); | |
1270 | if (binop->op_next) | |
1271 | return (OP*)binop; | |
1272 | ||
1273 | binop->op_last = last = binop->op_first->op_sibling; | |
1274 | ||
1275 | return fold_constants(binop); | |
1276 | } | |
1277 | ||
1278 | OP * | |
1279 | pmtrans(op, expr, repl) | |
1280 | OP *op; | |
1281 | OP *expr; | |
1282 | OP *repl; | |
1283 | { | |
1284 | PMOP *pm = (PMOP*)op; | |
1285 | SV *tstr = ((SVOP*)expr)->op_sv; | |
1286 | SV *rstr = ((SVOP*)repl)->op_sv; | |
463ee0b2 LW |
1287 | STRLEN tlen; |
1288 | STRLEN rlen; | |
1289 | register char *t = SvPV(tstr, tlen); | |
1290 | register char *r = SvPV(rstr, rlen); | |
79072805 LW |
1291 | register I32 i; |
1292 | register I32 j; | |
1293 | I32 squash; | |
1294 | I32 delete; | |
1295 | I32 complement; | |
1296 | register short *tbl; | |
1297 | ||
1298 | tbl = (short*)cPVOP->op_pv; | |
1299 | complement = op->op_private & OPpTRANS_COMPLEMENT; | |
1300 | delete = op->op_private & OPpTRANS_DELETE; | |
1301 | squash = op->op_private & OPpTRANS_SQUASH; | |
1302 | ||
1303 | if (complement) { | |
1304 | Zero(tbl, 256, short); | |
1305 | for (i = 0; i < tlen; i++) | |
1306 | tbl[t[i] & 0377] = -1; | |
1307 | for (i = 0, j = 0; i < 256; i++) { | |
1308 | if (!tbl[i]) { | |
1309 | if (j >= rlen) { | |
1310 | if (delete) | |
1311 | tbl[i] = -2; | |
1312 | else if (rlen) | |
1313 | tbl[i] = r[j-1] & 0377; | |
1314 | else | |
1315 | tbl[i] = i; | |
1316 | } | |
1317 | else | |
1318 | tbl[i] = r[j++] & 0377; | |
1319 | } | |
1320 | } | |
1321 | } | |
1322 | else { | |
1323 | if (!rlen && !delete) { | |
1324 | r = t; rlen = tlen; | |
1325 | } | |
1326 | for (i = 0; i < 256; i++) | |
1327 | tbl[i] = -1; | |
1328 | for (i = 0, j = 0; i < tlen; i++,j++) { | |
1329 | if (j >= rlen) { | |
1330 | if (delete) { | |
1331 | if (tbl[t[i] & 0377] == -1) | |
1332 | tbl[t[i] & 0377] = -2; | |
1333 | continue; | |
1334 | } | |
1335 | --j; | |
1336 | } | |
1337 | if (tbl[t[i] & 0377] == -1) | |
1338 | tbl[t[i] & 0377] = r[j] & 0377; | |
1339 | } | |
1340 | } | |
1341 | op_free(expr); | |
1342 | op_free(repl); | |
1343 | ||
1344 | return op; | |
1345 | } | |
1346 | ||
1347 | OP * | |
1348 | newPMOP(type, flags) | |
1349 | I32 type; | |
1350 | I32 flags; | |
1351 | { | |
1352 | PMOP *pmop; | |
1353 | ||
1354 | Newz(1101, pmop, 1, PMOP); | |
1355 | pmop->op_type = type; | |
1356 | pmop->op_ppaddr = ppaddr[type]; | |
1357 | pmop->op_flags = flags; | |
1358 | pmop->op_private = 0; | |
1359 | ||
1360 | /* link into pm list */ | |
1361 | if (type != OP_TRANS) { | |
1362 | pmop->op_pmnext = HvPMROOT(curstash); | |
1363 | HvPMROOT(curstash) = pmop; | |
1364 | } | |
1365 | ||
1366 | return (OP*)pmop; | |
1367 | } | |
1368 | ||
1369 | OP * | |
1370 | pmruntime(op, expr, repl) | |
1371 | OP *op; | |
1372 | OP *expr; | |
1373 | OP *repl; | |
1374 | { | |
1375 | PMOP *pm; | |
1376 | LOGOP *rcop; | |
1377 | ||
1378 | if (op->op_type == OP_TRANS) | |
1379 | return pmtrans(op, expr, repl); | |
1380 | ||
1381 | pm = (PMOP*)op; | |
1382 | ||
1383 | if (expr->op_type == OP_CONST) { | |
463ee0b2 | 1384 | STRLEN plen; |
79072805 | 1385 | SV *pat = ((SVOP*)expr)->op_sv; |
463ee0b2 | 1386 | char *p = SvPV(pat, plen); |
79072805 | 1387 | if ((op->op_flags & OPf_SPECIAL) && strEQ(p, " ")) { |
93a17b20 | 1388 | sv_setpvn(pat, "\\s+", 3); |
463ee0b2 | 1389 | p = SvPV(pat, plen); |
79072805 LW |
1390 | pm->op_pmflags |= PMf_SKIPWHITE; |
1391 | } | |
463ee0b2 | 1392 | scan_prefix(pm, p, plen); |
79072805 LW |
1393 | if (pm->op_pmshort && (pm->op_pmflags & PMf_SCANFIRST)) |
1394 | fbm_compile(pm->op_pmshort, pm->op_pmflags & PMf_FOLD); | |
463ee0b2 | 1395 | pm->op_pmregexp = regcomp(p, p + plen, pm->op_pmflags & PMf_FOLD); |
79072805 LW |
1396 | hoistmust(pm); |
1397 | op_free(expr); | |
1398 | } | |
1399 | else { | |
463ee0b2 LW |
1400 | if (pm->op_pmflags & PMf_KEEP) |
1401 | expr = newUNOP(OP_REGCMAYBE,0,expr); | |
1402 | ||
79072805 LW |
1403 | Newz(1101, rcop, 1, LOGOP); |
1404 | rcop->op_type = OP_REGCOMP; | |
1405 | rcop->op_ppaddr = ppaddr[OP_REGCOMP]; | |
1406 | rcop->op_first = scalar(expr); | |
1407 | rcop->op_flags |= OPf_KIDS; | |
1408 | rcop->op_private = 1; | |
1409 | rcop->op_other = op; | |
1410 | ||
1411 | /* establish postfix order */ | |
463ee0b2 LW |
1412 | if (pm->op_pmflags & PMf_KEEP) { |
1413 | LINKLIST(expr); | |
1414 | rcop->op_next = expr; | |
1415 | ((UNOP*)expr)->op_first->op_next = (OP*)rcop; | |
1416 | } | |
1417 | else { | |
1418 | rcop->op_next = LINKLIST(expr); | |
1419 | expr->op_next = (OP*)rcop; | |
1420 | } | |
79072805 | 1421 | |
463ee0b2 | 1422 | prepend_elem(op->op_type, scalar((OP*)rcop), op); |
79072805 LW |
1423 | } |
1424 | ||
1425 | if (repl) { | |
1426 | if (repl->op_type == OP_CONST) { | |
1427 | pm->op_pmflags |= PMf_CONST; | |
1428 | prepend_elem(op->op_type, scalar(repl), op); | |
1429 | } | |
1430 | else { | |
1431 | OP *curop; | |
1432 | OP *lastop = 0; | |
1433 | for (curop = LINKLIST(repl); curop!=repl; curop = LINKLIST(curop)) { | |
1434 | if (opargs[curop->op_type] & OA_DANGEROUS) { | |
1435 | if (curop->op_type == OP_GV) { | |
1436 | GV *gv = ((GVOP*)curop)->op_gv; | |
93a17b20 | 1437 | if (strchr("&`'123456789+", *GvENAME(gv))) |
79072805 LW |
1438 | break; |
1439 | } | |
1440 | else if (curop->op_type == OP_RV2CV) | |
1441 | break; | |
1442 | else if (curop->op_type == OP_RV2SV || | |
1443 | curop->op_type == OP_RV2AV || | |
1444 | curop->op_type == OP_RV2HV || | |
1445 | curop->op_type == OP_RV2GV) { | |
1446 | if (lastop && lastop->op_type != OP_GV) /*funny deref?*/ | |
1447 | break; | |
1448 | } | |
1449 | else | |
1450 | break; | |
1451 | } | |
1452 | lastop = curop; | |
1453 | } | |
1454 | if (curop == repl) { | |
1455 | pm->op_pmflags |= PMf_CONST; /* const for long enough */ | |
1456 | prepend_elem(op->op_type, scalar(repl), op); | |
1457 | } | |
1458 | else { | |
1459 | Newz(1101, rcop, 1, LOGOP); | |
1460 | rcop->op_type = OP_SUBSTCONT; | |
1461 | rcop->op_ppaddr = ppaddr[OP_SUBSTCONT]; | |
1462 | rcop->op_first = scalar(repl); | |
1463 | rcop->op_flags |= OPf_KIDS; | |
1464 | rcop->op_private = 1; | |
1465 | rcop->op_other = op; | |
1466 | ||
1467 | /* establish postfix order */ | |
1468 | rcop->op_next = LINKLIST(repl); | |
1469 | repl->op_next = (OP*)rcop; | |
1470 | ||
463ee0b2 | 1471 | pm->op_pmreplroot = scalar((OP*)rcop); |
79072805 LW |
1472 | pm->op_pmreplstart = LINKLIST(rcop); |
1473 | rcop->op_next = 0; | |
1474 | } | |
1475 | } | |
1476 | } | |
1477 | ||
1478 | return (OP*)pm; | |
1479 | } | |
1480 | ||
1481 | OP * | |
1482 | newSVOP(type, flags, sv) | |
1483 | I32 type; | |
1484 | I32 flags; | |
1485 | SV *sv; | |
1486 | { | |
1487 | SVOP *svop; | |
1488 | Newz(1101, svop, 1, SVOP); | |
1489 | svop->op_type = type; | |
1490 | svop->op_ppaddr = ppaddr[type]; | |
1491 | svop->op_sv = sv; | |
1492 | svop->op_next = (OP*)svop; | |
1493 | svop->op_flags = flags; | |
1494 | if (opargs[type] & OA_RETSCALAR) | |
463ee0b2 | 1495 | scalar((OP*)svop); |
79072805 | 1496 | if (opargs[type] & OA_TARGET) |
ed6116ce | 1497 | svop->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 LW |
1498 | return (*check[type])((OP*)svop); |
1499 | } | |
1500 | ||
1501 | OP * | |
1502 | newGVOP(type, flags, gv) | |
1503 | I32 type; | |
1504 | I32 flags; | |
1505 | GV *gv; | |
1506 | { | |
1507 | GVOP *gvop; | |
1508 | Newz(1101, gvop, 1, GVOP); | |
1509 | gvop->op_type = type; | |
1510 | gvop->op_ppaddr = ppaddr[type]; | |
1511 | gvop->op_gv = (GV*)sv_ref(gv); | |
1512 | gvop->op_next = (OP*)gvop; | |
1513 | gvop->op_flags = flags; | |
1514 | if (opargs[type] & OA_RETSCALAR) | |
463ee0b2 | 1515 | scalar((OP*)gvop); |
79072805 | 1516 | if (opargs[type] & OA_TARGET) |
ed6116ce | 1517 | gvop->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 LW |
1518 | return (*check[type])((OP*)gvop); |
1519 | } | |
1520 | ||
1521 | OP * | |
1522 | newPVOP(type, flags, pv) | |
1523 | I32 type; | |
1524 | I32 flags; | |
1525 | char *pv; | |
1526 | { | |
1527 | PVOP *pvop; | |
1528 | Newz(1101, pvop, 1, PVOP); | |
1529 | pvop->op_type = type; | |
1530 | pvop->op_ppaddr = ppaddr[type]; | |
1531 | pvop->op_pv = pv; | |
1532 | pvop->op_next = (OP*)pvop; | |
1533 | pvop->op_flags = flags; | |
1534 | if (opargs[type] & OA_RETSCALAR) | |
463ee0b2 | 1535 | scalar((OP*)pvop); |
79072805 | 1536 | if (opargs[type] & OA_TARGET) |
ed6116ce | 1537 | pvop->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 LW |
1538 | return (*check[type])((OP*)pvop); |
1539 | } | |
1540 | ||
1541 | OP * | |
1542 | newCVOP(type, flags, cv, cont) | |
1543 | I32 type; | |
1544 | I32 flags; | |
1545 | CV *cv; | |
1546 | OP *cont; | |
1547 | { | |
1548 | CVOP *cvop; | |
1549 | Newz(1101, cvop, 1, CVOP); | |
1550 | cvop->op_type = type; | |
1551 | cvop->op_ppaddr = ppaddr[type]; | |
1552 | cvop->op_cv = cv; | |
1553 | cvop->op_cont = cont; | |
1554 | cvop->op_next = (OP*)cvop; | |
1555 | cvop->op_flags = flags; | |
1556 | if (opargs[type] & OA_RETSCALAR) | |
463ee0b2 | 1557 | scalar((OP*)cvop); |
79072805 | 1558 | if (opargs[type] & OA_TARGET) |
ed6116ce | 1559 | cvop->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 LW |
1560 | return (*check[type])((OP*)cvop); |
1561 | } | |
1562 | ||
1563 | void | |
1564 | package(op) | |
1565 | OP *op; | |
1566 | { | |
93a17b20 | 1567 | SV *sv; |
79072805 LW |
1568 | |
1569 | save_hptr(&curstash); | |
1570 | save_item(curstname); | |
93a17b20 | 1571 | if (op) { |
463ee0b2 LW |
1572 | STRLEN len; |
1573 | char *name; | |
93a17b20 | 1574 | sv = cSVOP->op_sv; |
463ee0b2 LW |
1575 | curstash = fetch_stash(sv,TRUE); |
1576 | name = SvPV(sv, len); | |
1577 | sv_setpvn(curstname, name, len); | |
93a17b20 LW |
1578 | op_free(op); |
1579 | } | |
1580 | else { | |
1581 | sv_setpv(curstname,"<none>"); | |
1582 | curstash = Nullhv; | |
1583 | } | |
79072805 LW |
1584 | copline = NOLINE; |
1585 | expect = XBLOCK; | |
1586 | } | |
1587 | ||
463ee0b2 LW |
1588 | HV* |
1589 | fetch_stash(sv,create) | |
1590 | SV *sv; | |
1591 | I32 create; | |
1592 | { | |
1593 | char tmpbuf[256]; | |
1594 | HV *stash; | |
1595 | GV *tmpgv; | |
1596 | char *name = SvPV(sv, na); | |
1597 | sprintf(tmpbuf,"%s::",name); | |
1598 | tmpgv = gv_fetchpv(tmpbuf,create); | |
1599 | if (!tmpgv) | |
1600 | return 0; | |
1601 | if (!GvHV(tmpgv)) | |
1602 | GvHV(tmpgv) = newHV(); | |
1603 | stash = GvHV(tmpgv); | |
1604 | if (!HvNAME(stash)) | |
1605 | HvNAME(stash) = savestr(name); | |
1606 | return stash; | |
1607 | } | |
1608 | ||
79072805 LW |
1609 | OP * |
1610 | newSLICEOP(flags, subscript, listval) | |
1611 | I32 flags; | |
1612 | OP *subscript; | |
1613 | OP *listval; | |
1614 | { | |
1615 | return newBINOP(OP_LSLICE, flags, | |
1616 | list(prepend_elem(OP_LIST, newOP(OP_PUSHMARK, 0), subscript)), | |
1617 | list(prepend_elem(OP_LIST, newOP(OP_PUSHMARK, 0), listval)) ); | |
1618 | } | |
1619 | ||
1620 | static I32 | |
1621 | list_assignment(op) | |
1622 | register OP *op; | |
1623 | { | |
1624 | if (!op) | |
1625 | return TRUE; | |
1626 | ||
1627 | if (op->op_type == OP_NULL && op->op_flags & OPf_KIDS) | |
1628 | op = cUNOP->op_first; | |
1629 | ||
1630 | if (op->op_type == OP_COND_EXPR) { | |
1631 | I32 t = list_assignment(cCONDOP->op_first->op_sibling); | |
1632 | I32 f = list_assignment(cCONDOP->op_first->op_sibling->op_sibling); | |
1633 | ||
1634 | if (t && f) | |
1635 | return TRUE; | |
1636 | if (t || f) | |
1637 | yyerror("Assignment to both a list and a scalar"); | |
1638 | return FALSE; | |
1639 | } | |
1640 | ||
1641 | if (op->op_type == OP_LIST || op->op_flags & OPf_PARENS || | |
1642 | op->op_type == OP_RV2AV || op->op_type == OP_RV2HV || | |
1643 | op->op_type == OP_ASLICE || op->op_type == OP_HSLICE) | |
1644 | return TRUE; | |
1645 | ||
93a17b20 LW |
1646 | if (op->op_type == OP_PADAV || op->op_type == OP_PADHV) |
1647 | return TRUE; | |
1648 | ||
79072805 LW |
1649 | if (op->op_type == OP_RV2SV) |
1650 | return FALSE; | |
1651 | ||
1652 | return FALSE; | |
1653 | } | |
1654 | ||
1655 | OP * | |
1656 | newASSIGNOP(flags, left, right) | |
1657 | I32 flags; | |
1658 | OP *left; | |
1659 | OP *right; | |
1660 | { | |
1661 | OP *op; | |
1662 | ||
1663 | if (list_assignment(left)) { | |
463ee0b2 LW |
1664 | modcount = 0; |
1665 | left = mod(left, OP_AASSIGN); | |
79072805 LW |
1666 | if (right && right->op_type == OP_SPLIT) { |
1667 | if ((op = ((LISTOP*)right)->op_first) && op->op_type == OP_PUSHRE) { | |
1668 | PMOP *pm = (PMOP*)op; | |
1669 | if (left->op_type == OP_RV2AV) { | |
1670 | op = ((UNOP*)left)->op_first; | |
1671 | if (op->op_type == OP_GV && !pm->op_pmreplroot) { | |
1672 | pm->op_pmreplroot = (OP*)((GVOP*)op)->op_gv; | |
1673 | pm->op_pmflags |= PMf_ONCE; | |
1674 | op_free(left); | |
1675 | return right; | |
1676 | } | |
1677 | } | |
1678 | else { | |
463ee0b2 | 1679 | if (modcount < 10000) { |
79072805 | 1680 | SV *sv = ((SVOP*)((LISTOP*)right)->op_last)->op_sv; |
463ee0b2 LW |
1681 | if (SvIVX(sv) == 0) |
1682 | sv_setiv(sv, modcount+1); | |
79072805 LW |
1683 | } |
1684 | } | |
1685 | } | |
1686 | } | |
1687 | op = newBINOP(OP_AASSIGN, flags, | |
1688 | list(prepend_elem(OP_LIST, newOP(OP_PUSHMARK, 0), right)), | |
1689 | list(prepend_elem(OP_LIST, newOP(OP_PUSHMARK, 0), left)) ); | |
1690 | op->op_private = 0; | |
93a17b20 | 1691 | if (!(left->op_flags & OPf_INTRO)) { |
79072805 LW |
1692 | static int generation = 0; |
1693 | OP *curop; | |
1694 | OP *lastop = op; | |
1695 | generation++; | |
1696 | for (curop = LINKLIST(op); curop != op; curop = LINKLIST(curop)) { | |
1697 | if (opargs[curop->op_type] & OA_DANGEROUS) { | |
1698 | if (curop->op_type == OP_GV) { | |
1699 | GV *gv = ((GVOP*)curop)->op_gv; | |
1700 | if (gv == defgv || SvCUR(gv) == generation) | |
1701 | break; | |
1702 | SvCUR(gv) = generation; | |
1703 | } | |
1704 | else if (curop->op_type == OP_RV2CV) | |
1705 | break; | |
1706 | else if (curop->op_type == OP_RV2SV || | |
1707 | curop->op_type == OP_RV2AV || | |
1708 | curop->op_type == OP_RV2HV || | |
1709 | curop->op_type == OP_RV2GV) { | |
1710 | if (lastop->op_type != OP_GV) /* funny deref? */ | |
1711 | break; | |
1712 | } | |
1713 | else | |
1714 | break; | |
1715 | } | |
1716 | lastop = curop; | |
1717 | } | |
1718 | if (curop != op) | |
1719 | op->op_private = OPpASSIGN_COMMON; | |
1720 | } | |
ed6116ce | 1721 | op->op_targ = pad_alloc(OP_AASSIGN, SVs_PADTMP); /* for scalar context */ |
79072805 LW |
1722 | return op; |
1723 | } | |
1724 | if (!right) | |
1725 | right = newOP(OP_UNDEF, 0); | |
1726 | if (right->op_type == OP_READLINE) { | |
1727 | right->op_flags |= OPf_STACKED; | |
463ee0b2 | 1728 | return newBINOP(OP_NULL, flags, mod(scalar(left), OP_SASSIGN), scalar(right)); |
79072805 LW |
1729 | } |
1730 | else | |
1731 | op = newBINOP(OP_SASSIGN, flags, | |
463ee0b2 | 1732 | scalar(right), mod(scalar(left), OP_SASSIGN) ); |
79072805 LW |
1733 | return op; |
1734 | } | |
1735 | ||
1736 | OP * | |
1737 | newSTATEOP(flags, label, op) | |
1738 | I32 flags; | |
1739 | char *label; | |
1740 | OP *op; | |
1741 | { | |
1742 | register COP *cop; | |
1743 | ||
93a17b20 LW |
1744 | comppadnamefill = AvFILL(comppadname); /* introduce my variables */ |
1745 | ||
79072805 | 1746 | Newz(1101, cop, 1, COP); |
93a17b20 LW |
1747 | cop->op_type = OP_NEXTSTATE; |
1748 | cop->op_ppaddr = ppaddr[ perldb ? OP_DBSTATE : OP_NEXTSTATE ]; | |
79072805 LW |
1749 | cop->op_flags = flags; |
1750 | cop->op_private = 0; | |
1751 | cop->op_next = (OP*)cop; | |
1752 | ||
463ee0b2 LW |
1753 | if (label) { |
1754 | cop->cop_label = label; | |
1755 | needblockscope = TRUE; | |
1756 | } | |
1757 | cop->cop_seq = cop_seqmax++; | |
79072805 LW |
1758 | |
1759 | if (copline == NOLINE) | |
1760 | cop->cop_line = curcop->cop_line; | |
1761 | else { | |
1762 | cop->cop_line = copline; | |
1763 | copline = NOLINE; | |
1764 | } | |
1765 | cop->cop_filegv = curcop->cop_filegv; | |
1766 | cop->cop_stash = curstash; | |
1767 | ||
93a17b20 LW |
1768 | if (perldb) { |
1769 | SV **svp = av_fetch(GvAV(curcop->cop_filegv),(I32)cop->cop_line, FALSE); | |
1770 | if (svp && *svp != &sv_undef && !SvIOK(*svp)) { | |
463ee0b2 | 1771 | SvIVX(*svp) = 1; |
93a17b20 LW |
1772 | SvIOK_on(*svp); |
1773 | SvSTASH(*svp) = (HV*)cop; | |
1774 | } | |
1775 | } | |
1776 | ||
79072805 LW |
1777 | return prepend_elem(OP_LINESEQ, (OP*)cop, op); |
1778 | } | |
1779 | ||
1780 | OP * | |
1781 | newLOGOP(type, flags, first, other) | |
1782 | I32 type; | |
1783 | I32 flags; | |
1784 | OP* first; | |
1785 | OP* other; | |
1786 | { | |
1787 | LOGOP *logop; | |
1788 | OP *op; | |
1789 | ||
1790 | scalar(first); | |
1791 | /* optimize "!a && b" to "a || b", and "!a || b" to "a && b" */ | |
1792 | if (first->op_type == OP_NOT && (first->op_flags & OPf_SPECIAL)) { | |
1793 | if (type == OP_AND || type == OP_OR) { | |
1794 | if (type == OP_AND) | |
1795 | type = OP_OR; | |
1796 | else | |
1797 | type = OP_AND; | |
1798 | op = first; | |
1799 | first = cUNOP->op_first; | |
1800 | if (op->op_next) | |
1801 | first->op_next = op->op_next; | |
1802 | cUNOP->op_first = Nullop; | |
1803 | op_free(op); | |
1804 | } | |
1805 | } | |
1806 | if (first->op_type == OP_CONST) { | |
93a17b20 LW |
1807 | if (dowarn && (first->op_private & OPpCONST_BARE)) |
1808 | warn("Probable precedence problem on %s", op_name[type]); | |
79072805 LW |
1809 | if ((type == OP_AND) == (SvTRUE(((SVOP*)first)->op_sv))) { |
1810 | op_free(first); | |
1811 | return other; | |
1812 | } | |
1813 | else { | |
1814 | op_free(other); | |
1815 | return first; | |
1816 | } | |
1817 | } | |
1818 | else if (first->op_type == OP_WANTARRAY) { | |
1819 | if (type == OP_AND) | |
1820 | list(other); | |
1821 | else | |
1822 | scalar(other); | |
1823 | } | |
1824 | ||
1825 | if (!other) | |
1826 | return first; | |
1827 | ||
1828 | Newz(1101, logop, 1, LOGOP); | |
1829 | ||
1830 | logop->op_type = type; | |
1831 | logop->op_ppaddr = ppaddr[type]; | |
1832 | logop->op_first = first; | |
1833 | logop->op_flags = flags | OPf_KIDS; | |
1834 | logop->op_other = LINKLIST(other); | |
1835 | logop->op_private = 1; | |
1836 | ||
1837 | /* establish postfix order */ | |
1838 | logop->op_next = LINKLIST(first); | |
1839 | first->op_next = (OP*)logop; | |
1840 | first->op_sibling = other; | |
1841 | ||
1842 | op = newUNOP(OP_NULL, 0, (OP*)logop); | |
1843 | other->op_next = op; | |
1844 | ||
1845 | return op; | |
1846 | } | |
1847 | ||
1848 | OP * | |
1849 | newCONDOP(flags, first, true, false) | |
1850 | I32 flags; | |
1851 | OP* first; | |
1852 | OP* true; | |
1853 | OP* false; | |
1854 | { | |
1855 | CONDOP *condop; | |
1856 | OP *op; | |
1857 | ||
1858 | if (!false) | |
1859 | return newLOGOP(OP_AND, 0, first, true); | |
463ee0b2 LW |
1860 | if (!true) |
1861 | return newLOGOP(OP_OR, 0, first, false); | |
79072805 LW |
1862 | |
1863 | scalar(first); | |
1864 | if (first->op_type == OP_CONST) { | |
1865 | if (SvTRUE(((SVOP*)first)->op_sv)) { | |
1866 | op_free(first); | |
1867 | op_free(false); | |
1868 | return true; | |
1869 | } | |
1870 | else { | |
1871 | op_free(first); | |
1872 | op_free(true); | |
1873 | return false; | |
1874 | } | |
1875 | } | |
1876 | else if (first->op_type == OP_WANTARRAY) { | |
1877 | list(true); | |
1878 | scalar(false); | |
1879 | } | |
1880 | Newz(1101, condop, 1, CONDOP); | |
1881 | ||
1882 | condop->op_type = OP_COND_EXPR; | |
1883 | condop->op_ppaddr = ppaddr[OP_COND_EXPR]; | |
1884 | condop->op_first = first; | |
1885 | condop->op_flags = flags | OPf_KIDS; | |
1886 | condop->op_true = LINKLIST(true); | |
1887 | condop->op_false = LINKLIST(false); | |
1888 | condop->op_private = 1; | |
1889 | ||
1890 | /* establish postfix order */ | |
1891 | condop->op_next = LINKLIST(first); | |
1892 | first->op_next = (OP*)condop; | |
1893 | ||
1894 | first->op_sibling = true; | |
1895 | true->op_sibling = false; | |
1896 | op = newUNOP(OP_NULL, 0, (OP*)condop); | |
1897 | ||
1898 | true->op_next = op; | |
1899 | false->op_next = op; | |
1900 | ||
1901 | return op; | |
1902 | } | |
1903 | ||
1904 | OP * | |
1905 | newRANGE(flags, left, right) | |
1906 | I32 flags; | |
1907 | OP *left; | |
1908 | OP *right; | |
1909 | { | |
1910 | CONDOP *condop; | |
1911 | OP *flip; | |
1912 | OP *flop; | |
1913 | OP *op; | |
1914 | ||
1915 | Newz(1101, condop, 1, CONDOP); | |
1916 | ||
1917 | condop->op_type = OP_RANGE; | |
1918 | condop->op_ppaddr = ppaddr[OP_RANGE]; | |
1919 | condop->op_first = left; | |
1920 | condop->op_flags = OPf_KIDS; | |
1921 | condop->op_true = LINKLIST(left); | |
1922 | condop->op_false = LINKLIST(right); | |
1923 | condop->op_private = 1; | |
1924 | ||
1925 | left->op_sibling = right; | |
1926 | ||
1927 | condop->op_next = (OP*)condop; | |
1928 | flip = newUNOP(OP_FLIP, flags, (OP*)condop); | |
1929 | flop = newUNOP(OP_FLOP, 0, flip); | |
1930 | op = newUNOP(OP_NULL, 0, flop); | |
1931 | linklist(flop); | |
1932 | ||
1933 | left->op_next = flip; | |
1934 | right->op_next = flop; | |
1935 | ||
ed6116ce | 1936 | condop->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 | 1937 | sv_upgrade(PAD_SV(condop->op_targ), SVt_PVNV); |
ed6116ce | 1938 | flip->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 LW |
1939 | sv_upgrade(PAD_SV(flip->op_targ), SVt_PVNV); |
1940 | ||
1941 | flip->op_private = left->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
1942 | flop->op_private = right->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
1943 | ||
1944 | flip->op_next = op; | |
1945 | if (!flip->op_private || !flop->op_private) | |
1946 | linklist(op); /* blow off optimizer unless constant */ | |
1947 | ||
1948 | return op; | |
1949 | } | |
1950 | ||
1951 | OP * | |
1952 | newLOOPOP(flags, debuggable, expr, block) | |
1953 | I32 flags; | |
1954 | I32 debuggable; | |
1955 | OP *expr; | |
1956 | OP *block; | |
1957 | { | |
463ee0b2 | 1958 | OP* listop; |
93a17b20 | 1959 | OP* op; |
463ee0b2 LW |
1960 | int once = block && block->op_flags & OPf_SPECIAL && |
1961 | (block->op_type == OP_ENTERSUBR || block->op_type == OP_NULL); | |
93a17b20 | 1962 | |
463ee0b2 LW |
1963 | if (expr) { |
1964 | if (once && expr->op_type == OP_CONST && !SvTRUE(((SVOP*)expr)->op_sv)) | |
1965 | return block; /* do {} while 0 does once */ | |
1966 | else if (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB) | |
1967 | expr = newASSIGNOP(0, newSVREF(newGVOP(OP_GV, 0, defgv)), expr); | |
1968 | } | |
93a17b20 | 1969 | |
ed6116ce | 1970 | listop = append_elem(OP_LINESEQ, guess_mark(block), newOP(OP_UNSTACK, 0)); |
93a17b20 | 1971 | op = newLOGOP(OP_AND, 0, expr, listop); |
463ee0b2 | 1972 | |
79072805 LW |
1973 | ((LISTOP*)listop)->op_last->op_next = LINKLIST(op); |
1974 | ||
463ee0b2 | 1975 | if (once && op != listop) |
79072805 LW |
1976 | op->op_next = ((LOGOP*)cUNOP->op_first)->op_other; |
1977 | ||
1978 | op->op_flags |= flags; | |
463ee0b2 | 1979 | return scope(op); |
79072805 LW |
1980 | } |
1981 | ||
1982 | OP * | |
1983 | newWHILEOP(flags, debuggable, loop, expr, block, cont) | |
1984 | I32 flags; | |
1985 | I32 debuggable; | |
1986 | LOOP *loop; | |
1987 | OP *expr; | |
1988 | OP *block; | |
1989 | OP *cont; | |
1990 | { | |
1991 | OP *redo; | |
1992 | OP *next = 0; | |
1993 | OP *listop; | |
1994 | OP *op; | |
1995 | OP *condop; | |
1996 | ||
1997 | if (expr && (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB)) | |
1998 | expr = newASSIGNOP(0, newSVREF(newGVOP(OP_GV, 0, defgv)), expr); | |
1999 | ||
2000 | if (!block) | |
2001 | block = newOP(OP_NULL, 0); | |
2002 | ||
2003 | if (cont) | |
2004 | next = LINKLIST(cont); | |
2005 | if (expr) | |
2006 | cont = append_elem(OP_LINESEQ, cont, newOP(OP_UNSTACK, 0)); | |
2007 | ||
463ee0b2 | 2008 | listop = append_list(OP_LINESEQ, (LISTOP*)block, (LISTOP*)cont); |
79072805 LW |
2009 | redo = LINKLIST(listop); |
2010 | ||
2011 | if (expr) { | |
2012 | op = newLOGOP(OP_AND, 0, expr, scalar(listop)); | |
463ee0b2 LW |
2013 | if (op == expr) { /* oops, it's a while (0) */ |
2014 | op_free(expr); | |
2015 | op_free((OP*)loop); | |
2016 | return Nullop; /* (listop already freed by newLOGOP) */ | |
2017 | } | |
79072805 LW |
2018 | ((LISTOP*)listop)->op_last->op_next = condop = |
2019 | (op == listop ? redo : LINKLIST(op)); | |
2020 | if (!next) | |
2021 | next = condop; | |
2022 | } | |
2023 | else | |
2024 | op = listop; | |
2025 | ||
2026 | if (!loop) { | |
2027 | Newz(1101,loop,1,LOOP); | |
2028 | loop->op_type = OP_ENTERLOOP; | |
2029 | loop->op_ppaddr = ppaddr[OP_ENTERLOOP]; | |
2030 | loop->op_private = 0; | |
2031 | loop->op_next = (OP*)loop; | |
2032 | } | |
2033 | ||
463ee0b2 | 2034 | op = newBINOP(OP_LEAVELOOP, 0, (OP*)loop, op); |
79072805 LW |
2035 | |
2036 | loop->op_redoop = redo; | |
2037 | loop->op_lastop = op; | |
2038 | ||
2039 | if (next) | |
2040 | loop->op_nextop = next; | |
2041 | else | |
2042 | loop->op_nextop = op; | |
2043 | ||
2044 | op->op_flags |= flags; | |
2045 | return op; | |
2046 | } | |
2047 | ||
2048 | OP * | |
2049 | newFOROP(flags,label,forline,sv,expr,block,cont) | |
2050 | I32 flags; | |
2051 | char *label; | |
2052 | line_t forline; | |
2053 | OP* sv; | |
2054 | OP* expr; | |
2055 | OP*block; | |
2056 | OP*cont; | |
2057 | { | |
2058 | LOOP *loop; | |
2059 | ||
2060 | copline = forline; | |
2061 | if (sv) { | |
2062 | if (sv->op_type == OP_RV2SV) { | |
2063 | OP *op = sv; | |
2064 | sv = cUNOP->op_first; | |
2065 | sv->op_next = sv; | |
2066 | cUNOP->op_first = Nullop; | |
2067 | op_free(op); | |
2068 | } | |
2069 | else | |
463ee0b2 | 2070 | croak("Can't use %s for loop variable", op_name[sv->op_type]); |
79072805 LW |
2071 | } |
2072 | else { | |
2073 | sv = newGVOP(OP_GV, 0, defgv); | |
2074 | } | |
2075 | loop = (LOOP*)list(convert(OP_ENTERITER, 0, | |
2076 | append_elem(OP_LIST, | |
2077 | prepend_elem(OP_LIST, newOP(OP_PUSHMARK, 0), expr), | |
2078 | scalar(sv)))); | |
2079 | return newSTATEOP(0, label, newWHILEOP(flags, 1, | |
93a17b20 | 2080 | loop, newOP(OP_ITER, 0), block, cont)); |
79072805 LW |
2081 | } |
2082 | ||
2083 | void | |
463ee0b2 | 2084 | cv_clear(cv) |
79072805 LW |
2085 | CV *cv; |
2086 | { | |
2087 | if (!CvUSERSUB(cv) && CvROOT(cv)) { | |
2088 | op_free(CvROOT(cv)); | |
2089 | CvROOT(cv) = Nullop; | |
2090 | if (CvDEPTH(cv)) | |
2091 | warn("Deleting active subroutine"); /* XXX */ | |
2092 | if (CvPADLIST(cv)) { | |
2093 | I32 i = AvFILL(CvPADLIST(cv)); | |
2094 | while (i > 0) { | |
2095 | SV** svp = av_fetch(CvPADLIST(cv), i--, FALSE); | |
2096 | if (svp) | |
463ee0b2 | 2097 | av_free((AV*)*svp); |
79072805 | 2098 | } |
463ee0b2 | 2099 | av_free((AV*)CvPADLIST(cv)); |
79072805 LW |
2100 | } |
2101 | } | |
79072805 LW |
2102 | } |
2103 | ||
2104 | void | |
2105 | newSUB(floor,op,block) | |
2106 | I32 floor; | |
2107 | OP *op; | |
2108 | OP *block; | |
2109 | { | |
2110 | register CV *cv; | |
463ee0b2 LW |
2111 | char *name = SvPVx(cSVOP->op_sv, na); |
2112 | GV *gv = gv_fetchpv(name,2); | |
79072805 LW |
2113 | AV* av; |
2114 | ||
463ee0b2 LW |
2115 | sub_generation++; |
2116 | if ((cv = GvCV(gv)) && !GvCVGEN(gv)) { | |
79072805 LW |
2117 | if (CvDEPTH(cv)) |
2118 | CvDELETED(cv) = TRUE; /* probably an autoloader */ | |
2119 | else { | |
93a17b20 | 2120 | if (dowarn && CvROOT(cv)) { |
79072805 LW |
2121 | line_t oldline = curcop->cop_line; |
2122 | ||
2123 | curcop->cop_line = copline; | |
2124 | warn("Subroutine %s redefined",name); | |
2125 | curcop->cop_line = oldline; | |
2126 | } | |
463ee0b2 | 2127 | sv_free((SV*)cv); |
79072805 LW |
2128 | } |
2129 | } | |
2130 | Newz(101,cv,1,CV); | |
2131 | sv_upgrade(cv, SVt_PVCV); | |
463ee0b2 | 2132 | SvREFCNT(cv) = 1; |
79072805 | 2133 | GvCV(gv) = cv; |
463ee0b2 | 2134 | GvCVGEN(gv) = 0; |
79072805 LW |
2135 | CvFILEGV(cv) = curcop->cop_filegv; |
2136 | ||
2137 | av = newAV(); | |
2138 | AvREAL_off(av); | |
93a17b20 LW |
2139 | if (AvFILL(comppadname) < AvFILL(comppad)) |
2140 | av_store(comppadname, AvFILL(comppad), Nullsv); | |
2141 | av_store(av, 0, (SV*)comppadname); | |
79072805 LW |
2142 | av_store(av, 1, (SV*)comppad); |
2143 | AvFILL(av) = 1; | |
2144 | CvPADLIST(cv) = av; | |
93a17b20 | 2145 | comppadname = newAV(); |
79072805 | 2146 | |
93a17b20 LW |
2147 | if (!block) { |
2148 | CvROOT(cv) = 0; | |
2149 | op_free(op); | |
2150 | copline = NOLINE; | |
2151 | leave_scope(floor); | |
2152 | return; | |
2153 | } | |
79072805 LW |
2154 | CvROOT(cv) = newUNOP(OP_LEAVESUBR, 0, scalarseq(block)); |
2155 | CvSTART(cv) = LINKLIST(CvROOT(cv)); | |
2156 | CvROOT(cv)->op_next = 0; | |
93a17b20 | 2157 | CvSTASH(cv) = curstash; |
79072805 LW |
2158 | peep(CvSTART(cv)); |
2159 | CvDELETED(cv) = FALSE; | |
93a17b20 LW |
2160 | if (strEQ(name, "BEGIN")) { |
2161 | line_t oldline = curcop->cop_line; | |
2162 | GV* oldfile = curcop->cop_filegv; | |
2163 | ||
2164 | if (!beginav) | |
2165 | beginav = newAV(); | |
2166 | av_push(beginav, sv_ref(gv)); | |
2167 | DEBUG_x( dump_sub(gv) ); | |
2168 | rs = nrs; | |
2169 | rslen = nrslen; | |
2170 | rschar = nrschar; | |
2171 | rspara = (nrslen == 2); | |
2172 | calllist(beginav); | |
463ee0b2 | 2173 | sv_free((SV*)cv); |
93a17b20 LW |
2174 | rs = "\n"; |
2175 | rslen = 1; | |
2176 | rschar = '\n'; | |
2177 | rspara = 0; | |
2178 | GvCV(gv) = 0; | |
2179 | curcop = &compiling; | |
2180 | curcop->cop_line = oldline; /* might have compiled something */ | |
2181 | curcop->cop_filegv = oldfile; /* recursively, clobbering these */ | |
2182 | } | |
2183 | else if (strEQ(name, "END")) { | |
2184 | if (!endav) | |
2185 | endav = newAV(); | |
2186 | av_unshift(endav, 1); | |
2187 | av_store(endav, 0, sv_ref(gv)); | |
2188 | } | |
79072805 LW |
2189 | if (perldb) { |
2190 | SV *sv; | |
2191 | SV *tmpstr = sv_mortalcopy(&sv_undef); | |
2192 | ||
463ee0b2 | 2193 | sprintf(buf,"%s:%ld",SvPVX(GvSV(curcop->cop_filegv)), subline); |
79072805 LW |
2194 | sv = newSVpv(buf,0); |
2195 | sv_catpv(sv,"-"); | |
2196 | sprintf(buf,"%ld",(long)curcop->cop_line); | |
2197 | sv_catpv(sv,buf); | |
2198 | gv_efullname(tmpstr,gv); | |
463ee0b2 | 2199 | hv_store(GvHV(DBsub), SvPVX(tmpstr), SvCUR(tmpstr), sv, 0); |
79072805 LW |
2200 | } |
2201 | op_free(op); | |
2202 | copline = NOLINE; | |
2203 | leave_scope(floor); | |
2204 | } | |
2205 | ||
2206 | void | |
463ee0b2 | 2207 | newXSUB(name, ix, subaddr, filename) |
79072805 LW |
2208 | char *name; |
2209 | I32 ix; | |
2210 | I32 (*subaddr)(); | |
2211 | char *filename; | |
2212 | { | |
2213 | register CV *cv; | |
463ee0b2 | 2214 | GV *gv = gv_fetchpv(name,2); |
79072805 | 2215 | |
463ee0b2 LW |
2216 | sub_generation++; |
2217 | if ((cv = GvCV(gv)) && !GvCVGEN(gv)) { | |
79072805 LW |
2218 | if (dowarn) |
2219 | warn("Subroutine %s redefined",name); | |
2220 | if (!CvUSERSUB(cv) && CvROOT(cv)) { | |
2221 | op_free(CvROOT(cv)); | |
2222 | CvROOT(cv) = Nullop; | |
2223 | } | |
2224 | Safefree(cv); | |
2225 | } | |
2226 | Newz(101,cv,1,CV); | |
2227 | sv_upgrade(cv, SVt_PVCV); | |
463ee0b2 | 2228 | SvREFCNT(cv) = 1; |
79072805 | 2229 | GvCV(gv) = cv; |
463ee0b2 | 2230 | GvCVGEN(gv) = 0; |
79072805 LW |
2231 | CvFILEGV(cv) = gv_fetchfile(filename); |
2232 | CvUSERSUB(cv) = subaddr; | |
2233 | CvUSERINDEX(cv) = ix; | |
2234 | CvDELETED(cv) = FALSE; | |
93a17b20 LW |
2235 | if (strEQ(name, "BEGIN")) { |
2236 | if (!beginav) | |
2237 | beginav = newAV(); | |
2238 | av_push(beginav, sv_ref(gv)); | |
2239 | } | |
2240 | else if (strEQ(name, "END")) { | |
2241 | if (!endav) | |
2242 | endav = newAV(); | |
2243 | av_unshift(endav, 1); | |
2244 | av_store(endav, 0, sv_ref(gv)); | |
2245 | } | |
79072805 LW |
2246 | } |
2247 | ||
2248 | void | |
2249 | newFORM(floor,op,block) | |
2250 | I32 floor; | |
2251 | OP *op; | |
2252 | OP *block; | |
2253 | { | |
2254 | register CV *cv; | |
2255 | char *name; | |
2256 | GV *gv; | |
2257 | AV* av; | |
2258 | ||
2259 | if (op) | |
463ee0b2 | 2260 | name = SvPVx(cSVOP->op_sv, na); |
79072805 LW |
2261 | else |
2262 | name = "STDOUT"; | |
2263 | gv = gv_fetchpv(name,TRUE); | |
2264 | if (cv = GvFORM(gv)) { | |
2265 | if (dowarn) { | |
2266 | line_t oldline = curcop->cop_line; | |
2267 | ||
2268 | curcop->cop_line = copline; | |
2269 | warn("Format %s redefined",name); | |
2270 | curcop->cop_line = oldline; | |
2271 | } | |
463ee0b2 | 2272 | sv_free((SV*)cv); |
79072805 LW |
2273 | } |
2274 | Newz(101,cv,1,CV); | |
2275 | sv_upgrade(cv, SVt_PVFM); | |
463ee0b2 | 2276 | SvREFCNT(cv) = 1; |
79072805 LW |
2277 | GvFORM(gv) = cv; |
2278 | CvFILEGV(cv) = curcop->cop_filegv; | |
2279 | ||
2280 | CvPADLIST(cv) = av = newAV(); | |
2281 | AvREAL_off(av); | |
2282 | av_store(av, 1, (SV*)comppad); | |
2283 | AvFILL(av) = 1; | |
2284 | ||
2285 | CvROOT(cv) = newUNOP(OP_LEAVEWRITE, 0, scalarseq(block)); | |
2286 | CvSTART(cv) = LINKLIST(CvROOT(cv)); | |
2287 | CvROOT(cv)->op_next = 0; | |
2288 | peep(CvSTART(cv)); | |
2289 | CvDELETED(cv) = FALSE; | |
2290 | FmLINES(cv) = 0; | |
2291 | op_free(op); | |
2292 | copline = NOLINE; | |
2293 | leave_scope(floor); | |
2294 | } | |
2295 | ||
2296 | OP * | |
2297 | newMETHOD(ref,name) | |
2298 | OP *ref; | |
2299 | OP *name; | |
2300 | { | |
2301 | LOGOP* mop; | |
2302 | Newz(1101, mop, 1, LOGOP); | |
2303 | mop->op_type = OP_METHOD; | |
2304 | mop->op_ppaddr = ppaddr[OP_METHOD]; | |
2305 | mop->op_first = scalar(ref); | |
2306 | mop->op_flags |= OPf_KIDS; | |
2307 | mop->op_private = 1; | |
2308 | mop->op_other = LINKLIST(name); | |
ed6116ce | 2309 | mop->op_targ = pad_alloc(OP_METHOD, SVs_PADTMP); |
79072805 LW |
2310 | mop->op_next = LINKLIST(ref); |
2311 | ref->op_next = (OP*)mop; | |
2312 | return (OP*)mop; | |
2313 | } | |
2314 | ||
2315 | OP * | |
2316 | newANONLIST(op) | |
2317 | OP* op; | |
2318 | { | |
93a17b20 LW |
2319 | return newUNOP(OP_REFGEN, 0, |
2320 | ref(list(convert(OP_ANONLIST, 0, op)), OP_REFGEN)); | |
79072805 LW |
2321 | } |
2322 | ||
2323 | OP * | |
2324 | newANONHASH(op) | |
2325 | OP* op; | |
2326 | { | |
93a17b20 LW |
2327 | return newUNOP(OP_REFGEN, 0, |
2328 | ref(list(convert(OP_ANONHASH, 0, op)), OP_REFGEN)); | |
79072805 LW |
2329 | } |
2330 | ||
2331 | OP * | |
2332 | oopsAV(o) | |
2333 | OP *o; | |
2334 | { | |
ed6116ce LW |
2335 | switch (o->op_type) { |
2336 | case OP_PADSV: | |
2337 | o->op_type = OP_PADAV; | |
2338 | o->op_ppaddr = ppaddr[OP_PADAV]; | |
2339 | return ref(newUNOP(OP_RV2AV, 0, scalar(o)), OP_RV2AV); | |
2340 | ||
2341 | case OP_RV2SV: | |
79072805 LW |
2342 | o->op_type = OP_RV2AV; |
2343 | o->op_ppaddr = ppaddr[OP_RV2AV]; | |
2344 | ref(o, OP_RV2AV); | |
ed6116ce LW |
2345 | break; |
2346 | ||
2347 | default: | |
79072805 | 2348 | warn("oops: oopsAV"); |
ed6116ce LW |
2349 | break; |
2350 | } | |
79072805 LW |
2351 | return o; |
2352 | } | |
2353 | ||
2354 | OP * | |
2355 | oopsHV(o) | |
2356 | OP *o; | |
2357 | { | |
ed6116ce LW |
2358 | switch (o->op_type) { |
2359 | case OP_PADSV: | |
2360 | case OP_PADAV: | |
2361 | o->op_type = OP_PADHV; | |
2362 | o->op_ppaddr = ppaddr[OP_PADHV]; | |
2363 | return ref(newUNOP(OP_RV2HV, 0, scalar(o)), OP_RV2HV); | |
2364 | ||
2365 | case OP_RV2SV: | |
2366 | case OP_RV2AV: | |
79072805 LW |
2367 | o->op_type = OP_RV2HV; |
2368 | o->op_ppaddr = ppaddr[OP_RV2HV]; | |
2369 | ref(o, OP_RV2HV); | |
ed6116ce LW |
2370 | break; |
2371 | ||
2372 | default: | |
79072805 | 2373 | warn("oops: oopsHV"); |
ed6116ce LW |
2374 | break; |
2375 | } | |
79072805 LW |
2376 | return o; |
2377 | } | |
2378 | ||
2379 | OP * | |
2380 | newAVREF(o) | |
2381 | OP *o; | |
2382 | { | |
ed6116ce LW |
2383 | if (o->op_type == OP_PADANY) { |
2384 | o->op_type = OP_PADAV; | |
2385 | o->op_ppaddr = ppaddr[OP_PADAV]; | |
93a17b20 | 2386 | return o; |
ed6116ce | 2387 | } |
79072805 LW |
2388 | return newUNOP(OP_RV2AV, 0, scalar(o)); |
2389 | } | |
2390 | ||
2391 | OP * | |
2392 | newGVREF(o) | |
2393 | OP *o; | |
2394 | { | |
2395 | return newUNOP(OP_RV2GV, 0, scalar(o)); | |
2396 | } | |
2397 | ||
2398 | OP * | |
2399 | newHVREF(o) | |
2400 | OP *o; | |
2401 | { | |
ed6116ce LW |
2402 | if (o->op_type == OP_PADANY) { |
2403 | o->op_type = OP_PADHV; | |
2404 | o->op_ppaddr = ppaddr[OP_PADHV]; | |
93a17b20 | 2405 | return o; |
ed6116ce | 2406 | } |
79072805 LW |
2407 | return newUNOP(OP_RV2HV, 0, scalar(o)); |
2408 | } | |
2409 | ||
2410 | OP * | |
2411 | oopsCV(o) | |
2412 | OP *o; | |
2413 | { | |
463ee0b2 | 2414 | croak("NOT IMPL LINE %d",__LINE__); |
79072805 LW |
2415 | /* STUB */ |
2416 | return o; | |
2417 | } | |
2418 | ||
2419 | OP * | |
2420 | newCVREF(o) | |
2421 | OP *o; | |
2422 | { | |
2423 | return newUNOP(OP_RV2CV, 0, scalar(o)); | |
2424 | } | |
2425 | ||
2426 | OP * | |
2427 | newSVREF(o) | |
2428 | OP *o; | |
2429 | { | |
ed6116ce LW |
2430 | if (o->op_type == OP_PADANY) { |
2431 | o->op_type = OP_PADSV; | |
2432 | o->op_ppaddr = ppaddr[OP_PADSV]; | |
93a17b20 | 2433 | return o; |
ed6116ce | 2434 | } |
79072805 LW |
2435 | return newUNOP(OP_RV2SV, 0, scalar(o)); |
2436 | } | |
2437 | ||
2438 | /* Check routines. */ | |
2439 | ||
2440 | OP * | |
2441 | ck_aelem(op) | |
2442 | OP *op; | |
2443 | { | |
2444 | /* XXX need to optimize constant subscript here. */ | |
2445 | return op; | |
2446 | } | |
2447 | ||
2448 | OP * | |
2449 | ck_concat(op) | |
2450 | OP *op; | |
2451 | { | |
2452 | if (cUNOP->op_first->op_type == OP_CONCAT) | |
2453 | op->op_flags |= OPf_STACKED; | |
2454 | return op; | |
2455 | } | |
2456 | ||
2457 | OP * | |
2458 | ck_chop(op) | |
2459 | OP *op; | |
2460 | { | |
2461 | if (op->op_flags & OPf_KIDS) { | |
2462 | OP* newop; | |
463ee0b2 | 2463 | op = modkids(ck_fun(op), op->op_type); |
79072805 LW |
2464 | if (op->op_private != 1) |
2465 | return op; | |
2466 | newop = cUNOP->op_first->op_sibling; | |
2467 | if (!newop || newop->op_type != OP_RV2SV) | |
2468 | return op; | |
2469 | op_free(cUNOP->op_first); | |
2470 | cUNOP->op_first = newop; | |
2471 | } | |
2472 | op->op_type = OP_SCHOP; | |
2473 | op->op_ppaddr = ppaddr[OP_SCHOP]; | |
2474 | return op; | |
2475 | } | |
2476 | ||
2477 | OP * | |
2478 | ck_eof(op) | |
2479 | OP *op; | |
2480 | { | |
2481 | I32 type = op->op_type; | |
2482 | ||
2483 | if (op->op_flags & OPf_KIDS) | |
2484 | return ck_fun(op); | |
2485 | ||
2486 | if (op->op_flags & OPf_SPECIAL) { | |
2487 | op_free(op); | |
2488 | op = newUNOP(type, 0, newGVOP(OP_GV, 0, gv_fetchpv("main'ARGV", TRUE))); | |
2489 | } | |
2490 | return op; | |
2491 | } | |
2492 | ||
2493 | OP * | |
2494 | ck_eval(op) | |
2495 | OP *op; | |
2496 | { | |
463ee0b2 | 2497 | needblockscope = TRUE; |
79072805 LW |
2498 | if (op->op_flags & OPf_KIDS) { |
2499 | SVOP *kid = (SVOP*)cUNOP->op_first; | |
2500 | ||
93a17b20 LW |
2501 | if (!kid) { |
2502 | op->op_flags &= ~OPf_KIDS; | |
2503 | op->op_type = OP_NULL; | |
2504 | op->op_ppaddr = ppaddr[OP_NULL]; | |
79072805 LW |
2505 | } |
2506 | else if (kid->op_type == OP_LINESEQ) { | |
2507 | LOGOP *enter; | |
2508 | ||
2509 | kid->op_next = op->op_next; | |
2510 | cUNOP->op_first = 0; | |
2511 | op_free(op); | |
2512 | ||
2513 | Newz(1101, enter, 1, LOGOP); | |
2514 | enter->op_type = OP_ENTERTRY; | |
2515 | enter->op_ppaddr = ppaddr[OP_ENTERTRY]; | |
2516 | enter->op_private = 0; | |
2517 | ||
2518 | /* establish postfix order */ | |
2519 | enter->op_next = (OP*)enter; | |
2520 | ||
463ee0b2 | 2521 | op = prepend_elem(OP_LINESEQ, (OP*)enter, (OP*)kid); |
79072805 LW |
2522 | op->op_type = OP_LEAVETRY; |
2523 | op->op_ppaddr = ppaddr[OP_LEAVETRY]; | |
2524 | enter->op_other = op; | |
2525 | return op; | |
2526 | } | |
2527 | } | |
2528 | else { | |
2529 | op_free(op); | |
2530 | op = newUNOP(OP_ENTEREVAL, 0, newSVREF(newGVOP(OP_GV, 0, defgv))); | |
2531 | } | |
2532 | return op; | |
2533 | } | |
2534 | ||
2535 | OP * | |
2536 | ck_exec(op) | |
2537 | OP *op; | |
2538 | { | |
2539 | OP *kid; | |
79072805 | 2540 | if (op->op_flags & OPf_STACKED) { |
463ee0b2 | 2541 | op = ck_fun(op); |
79072805 LW |
2542 | kid = cUNOP->op_first->op_sibling; |
2543 | if (kid->op_type == OP_RV2GV) { | |
2544 | kid->op_type = OP_NULL; | |
2545 | kid->op_ppaddr = ppaddr[OP_NULL]; | |
2546 | } | |
2547 | } | |
463ee0b2 LW |
2548 | else |
2549 | op = listkids(op); | |
79072805 LW |
2550 | return op; |
2551 | } | |
2552 | ||
2553 | OP * | |
2554 | ck_gvconst(o) | |
2555 | register OP *o; | |
2556 | { | |
2557 | o = fold_constants(o); | |
2558 | if (o->op_type == OP_CONST) | |
2559 | o->op_type = OP_GV; | |
2560 | return o; | |
2561 | } | |
2562 | ||
2563 | OP * | |
2564 | ck_rvconst(op) | |
2565 | register OP *op; | |
2566 | { | |
2567 | SVOP *kid = (SVOP*)cUNOP->op_first; | |
2568 | if (kid->op_type == OP_CONST) { | |
2569 | kid->op_type = OP_GV; | |
463ee0b2 LW |
2570 | kid->op_sv = sv_ref((SV*)gv_fetchpv(SvPVx(kid->op_sv, na), |
2571 | 1+(op->op_type==OP_RV2CV))); | |
79072805 LW |
2572 | } |
2573 | return op; | |
2574 | } | |
2575 | ||
2576 | OP * | |
2577 | ck_formline(op) | |
2578 | OP *op; | |
2579 | { | |
2580 | return ck_fun(op); | |
2581 | } | |
2582 | ||
2583 | OP * | |
2584 | ck_ftst(op) | |
2585 | OP *op; | |
2586 | { | |
2587 | I32 type = op->op_type; | |
2588 | ||
2589 | if (op->op_flags & OPf_SPECIAL) | |
2590 | return op; | |
2591 | ||
2592 | if (op->op_flags & OPf_KIDS) { | |
2593 | SVOP *kid = (SVOP*)cUNOP->op_first; | |
2594 | ||
2595 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
2596 | OP *newop = newGVOP(type, OPf_SPECIAL, | |
463ee0b2 | 2597 | gv_fetchpv(SvPVx(kid->op_sv, na), TRUE)); |
79072805 LW |
2598 | op_free(op); |
2599 | return newop; | |
2600 | } | |
2601 | } | |
2602 | else { | |
2603 | op_free(op); | |
2604 | if (type == OP_FTTTY) | |
2605 | return newGVOP(type, OPf_SPECIAL, gv_fetchpv("main'STDIN", TRUE)); | |
2606 | else | |
2607 | return newUNOP(type, 0, newSVREF(newGVOP(OP_GV, 0, defgv))); | |
2608 | } | |
2609 | return op; | |
2610 | } | |
2611 | ||
2612 | OP * | |
2613 | ck_fun(op) | |
2614 | OP *op; | |
2615 | { | |
2616 | register OP *kid; | |
2617 | OP **tokid; | |
2618 | OP *sibl; | |
2619 | I32 numargs = 0; | |
2620 | register I32 oa = opargs[op->op_type] >> 8; | |
2621 | ||
2622 | if (op->op_flags & OPf_STACKED) { | |
2623 | if ((oa & OA_OPTIONAL) && (oa >> 4) && !((oa >> 4) & OA_OPTIONAL)) | |
2624 | oa &= ~OA_OPTIONAL; | |
2625 | else | |
2626 | return no_fh_allowed(op); | |
2627 | } | |
2628 | ||
2629 | if (op->op_flags & OPf_KIDS) { | |
2630 | tokid = &cLISTOP->op_first; | |
2631 | kid = cLISTOP->op_first; | |
2632 | if (kid->op_type == OP_PUSHMARK) { | |
2633 | tokid = &kid->op_sibling; | |
2634 | kid = kid->op_sibling; | |
2635 | } | |
2636 | ||
2637 | while (oa && kid) { | |
2638 | numargs++; | |
2639 | sibl = kid->op_sibling; | |
2640 | switch (oa & 7) { | |
2641 | case OA_SCALAR: | |
2642 | scalar(kid); | |
2643 | break; | |
2644 | case OA_LIST: | |
2645 | if (oa < 16) { | |
2646 | kid = 0; | |
2647 | continue; | |
2648 | } | |
2649 | else | |
2650 | list(kid); | |
2651 | break; | |
2652 | case OA_AVREF: | |
2653 | if (kid->op_type == OP_CONST && | |
2654 | (kid->op_private & OPpCONST_BARE)) { | |
463ee0b2 | 2655 | char *name = SvPVx(((SVOP*)kid)->op_sv, na); |
79072805 | 2656 | OP *newop = newAVREF(newGVOP(OP_GV, 0, |
463ee0b2 LW |
2657 | gv_fetchpv(name, TRUE) )); |
2658 | if (dowarn) | |
2659 | warn("Array @%s missing the @ in argument %d of %s()", | |
2660 | name, numargs, op_name[op->op_type]); | |
79072805 LW |
2661 | op_free(kid); |
2662 | kid = newop; | |
2663 | kid->op_sibling = sibl; | |
2664 | *tokid = kid; | |
2665 | } | |
463ee0b2 | 2666 | mod(kid, op->op_type); |
79072805 LW |
2667 | break; |
2668 | case OA_HVREF: | |
2669 | if (kid->op_type == OP_CONST && | |
2670 | (kid->op_private & OPpCONST_BARE)) { | |
463ee0b2 | 2671 | char *name = SvPVx(((SVOP*)kid)->op_sv, na); |
79072805 | 2672 | OP *newop = newHVREF(newGVOP(OP_GV, 0, |
463ee0b2 LW |
2673 | gv_fetchpv(name, TRUE) )); |
2674 | if (dowarn) | |
2675 | warn("Hash %%%s missing the %% in argument %d of %s()", | |
2676 | name, numargs, op_name[op->op_type]); | |
79072805 LW |
2677 | op_free(kid); |
2678 | kid = newop; | |
2679 | kid->op_sibling = sibl; | |
2680 | *tokid = kid; | |
2681 | } | |
463ee0b2 | 2682 | mod(kid, op->op_type); |
79072805 LW |
2683 | break; |
2684 | case OA_CVREF: | |
2685 | { | |
2686 | OP *newop = newUNOP(OP_NULL, 0, scalar(kid)); | |
2687 | kid->op_sibling = 0; | |
2688 | linklist(kid); | |
2689 | newop->op_next = newop; | |
2690 | kid = newop; | |
2691 | kid->op_sibling = sibl; | |
2692 | *tokid = kid; | |
2693 | } | |
2694 | break; | |
2695 | case OA_FILEREF: | |
2696 | if (kid->op_type != OP_GV) { | |
2697 | if (kid->op_type == OP_CONST && | |
2698 | (kid->op_private & OPpCONST_BARE)) { | |
2699 | OP *newop = newGVOP(OP_GV, 0, | |
463ee0b2 | 2700 | gv_fetchpv(SvPVx(((SVOP*)kid)->op_sv, na), TRUE) ); |
79072805 LW |
2701 | op_free(kid); |
2702 | kid = newop; | |
2703 | } | |
2704 | else { | |
2705 | kid->op_sibling = 0; | |
2706 | kid = newUNOP(OP_RV2GV, 0, scalar(kid)); | |
2707 | } | |
2708 | kid->op_sibling = sibl; | |
2709 | *tokid = kid; | |
2710 | } | |
2711 | scalar(kid); | |
2712 | break; | |
2713 | case OA_SCALARREF: | |
463ee0b2 | 2714 | mod(scalar(kid), op->op_type); |
79072805 LW |
2715 | break; |
2716 | } | |
2717 | oa >>= 4; | |
2718 | tokid = &kid->op_sibling; | |
2719 | kid = kid->op_sibling; | |
2720 | } | |
2721 | op->op_private = numargs; | |
2722 | if (kid) | |
2723 | return too_many_arguments(op); | |
2724 | listkids(op); | |
2725 | } | |
2726 | if (oa) { | |
2727 | while (oa & OA_OPTIONAL) | |
2728 | oa >>= 4; | |
2729 | if (oa && oa != OA_LIST) | |
2730 | return too_few_arguments(op); | |
2731 | } | |
2732 | return op; | |
2733 | } | |
2734 | ||
2735 | OP * | |
2736 | ck_glob(op) | |
2737 | OP *op; | |
2738 | { | |
2739 | GV *gv = newGVgen(); | |
2740 | GvIOn(gv); | |
2741 | append_elem(OP_GLOB, op, newGVOP(OP_GV, 0, gv)); | |
2742 | scalarkids(op); | |
2743 | return op; | |
2744 | } | |
2745 | ||
2746 | OP * | |
2747 | ck_grep(op) | |
2748 | OP *op; | |
2749 | { | |
2750 | LOGOP *gwop; | |
2751 | OP *kid; | |
2752 | ||
93a17b20 LW |
2753 | if (op->op_flags & OPf_STACKED) { |
2754 | op = ck_sort(op); | |
2755 | op->op_flags &= ~OPf_STACKED; | |
2756 | } | |
79072805 LW |
2757 | op = ck_fun(op); |
2758 | if (error_count) | |
2759 | return op; | |
2760 | kid = cLISTOP->op_first->op_sibling; | |
2761 | if (kid->op_type != OP_NULL) | |
463ee0b2 | 2762 | croak("panic: ck_grep"); |
79072805 LW |
2763 | kid = kUNOP->op_first; |
2764 | ||
2765 | Newz(1101, gwop, 1, LOGOP); | |
2766 | gwop->op_type = OP_GREPWHILE; | |
2767 | gwop->op_ppaddr = ppaddr[OP_GREPWHILE]; | |
2768 | gwop->op_first = list(op); | |
2769 | gwop->op_flags |= OPf_KIDS; | |
2770 | gwop->op_private = 1; | |
2771 | gwop->op_other = LINKLIST(kid); | |
ed6116ce | 2772 | gwop->op_targ = pad_alloc(OP_GREPWHILE, SVs_PADTMP); |
79072805 LW |
2773 | kid->op_next = (OP*)gwop; |
2774 | ||
2775 | return (OP*)gwop; | |
2776 | } | |
2777 | ||
2778 | OP * | |
2779 | ck_index(op) | |
2780 | OP *op; | |
2781 | { | |
2782 | if (op->op_flags & OPf_KIDS) { | |
2783 | OP *kid = cLISTOP->op_first->op_sibling; /* get past pushmark */ | |
2784 | if (kid && kid->op_type == OP_CONST) | |
2785 | fbm_compile(((SVOP*)kid)->op_sv, 0); | |
2786 | } | |
2787 | return ck_fun(op); | |
2788 | } | |
2789 | ||
2790 | OP * | |
2791 | ck_lengthconst(op) | |
2792 | OP *op; | |
2793 | { | |
2794 | /* XXX length optimization goes here */ | |
2795 | return op; | |
2796 | } | |
2797 | ||
2798 | OP * | |
2799 | ck_lfun(op) | |
2800 | OP *op; | |
2801 | { | |
463ee0b2 | 2802 | return modkids(ck_fun(op), op->op_type); |
79072805 LW |
2803 | } |
2804 | ||
2805 | OP * | |
2806 | ck_listiob(op) | |
2807 | OP *op; | |
2808 | { | |
2809 | register OP *kid; | |
2810 | ||
2811 | kid = cLISTOP->op_first; | |
2812 | if (!kid) { | |
93a17b20 | 2813 | prepend_elem(op->op_type, newOP(OP_PUSHMARK, 0), op); |
79072805 LW |
2814 | kid = cLISTOP->op_first; |
2815 | } | |
2816 | if (kid->op_type == OP_PUSHMARK) | |
2817 | kid = kid->op_sibling; | |
2818 | if (kid && op->op_flags & OPf_STACKED) | |
2819 | kid = kid->op_sibling; | |
2820 | else if (kid && !kid->op_sibling) { /* print HANDLE; */ | |
2821 | if (kid->op_type == OP_CONST && kid->op_private & OPpCONST_BARE) { | |
2822 | op->op_flags |= OPf_STACKED; /* make it a filehandle */ | |
2823 | kid = newUNOP(OP_RV2GV, 0, scalar(kid)); | |
2824 | cLISTOP->op_first->op_sibling = kid; | |
2825 | cLISTOP->op_last = kid; | |
2826 | kid = kid->op_sibling; | |
2827 | } | |
2828 | } | |
2829 | ||
2830 | if (!kid) | |
2831 | append_elem(op->op_type, op, newSVREF(newGVOP(OP_GV, 0, defgv)) ); | |
2832 | ||
2833 | return listkids(op); | |
2834 | } | |
2835 | ||
2836 | OP * | |
2837 | ck_match(op) | |
2838 | OP *op; | |
2839 | { | |
2840 | cPMOP->op_pmflags |= PMf_RUNTIME; | |
2841 | return op; | |
2842 | } | |
2843 | ||
2844 | OP * | |
2845 | ck_null(op) | |
2846 | OP *op; | |
2847 | { | |
2848 | return op; | |
2849 | } | |
2850 | ||
2851 | OP * | |
2852 | ck_repeat(op) | |
2853 | OP *op; | |
2854 | { | |
2855 | if (cBINOP->op_first->op_flags & OPf_PARENS) { | |
2856 | op->op_private = OPpREPEAT_DOLIST; | |
2857 | cBINOP->op_first = | |
2858 | prepend_elem(OP_NULL, newOP(OP_PUSHMARK, 0), cBINOP->op_first); | |
2859 | } | |
2860 | else | |
2861 | scalar(op); | |
2862 | return op; | |
2863 | } | |
2864 | ||
2865 | OP * | |
2866 | ck_retarget(op) | |
2867 | OP *op; | |
2868 | { | |
463ee0b2 | 2869 | croak("NOT IMPL LINE %d",__LINE__); |
79072805 LW |
2870 | /* STUB */ |
2871 | return op; | |
2872 | } | |
2873 | ||
2874 | OP * | |
2875 | ck_select(op) | |
2876 | OP *op; | |
2877 | { | |
2878 | if (op->op_flags & OPf_KIDS) { | |
2879 | OP *kid = cLISTOP->op_first->op_sibling; /* get past pushmark */ | |
2880 | if (kid) { | |
2881 | op->op_type = OP_SSELECT; | |
2882 | op->op_ppaddr = ppaddr[OP_SSELECT]; | |
2883 | op = ck_fun(op); | |
2884 | return fold_constants(op); | |
2885 | } | |
2886 | } | |
2887 | return ck_fun(op); | |
2888 | } | |
2889 | ||
2890 | OP * | |
2891 | ck_shift(op) | |
2892 | OP *op; | |
2893 | { | |
2894 | I32 type = op->op_type; | |
2895 | ||
2896 | if (!(op->op_flags & OPf_KIDS)) { | |
2897 | op_free(op); | |
2898 | return newUNOP(type, 0, | |
2899 | scalar(newUNOP(OP_RV2AV, 0, | |
2900 | scalar(newGVOP(OP_GV, 0, | |
2901 | gv_fetchpv((subline ? "_" : "ARGV"), TRUE) ))))); | |
2902 | } | |
463ee0b2 | 2903 | return scalar(modkids(ck_fun(op), type)); |
79072805 LW |
2904 | } |
2905 | ||
2906 | OP * | |
2907 | ck_sort(op) | |
2908 | OP *op; | |
2909 | { | |
2910 | if (op->op_flags & OPf_STACKED) { | |
2911 | OP *kid = cLISTOP->op_first->op_sibling; /* get past pushmark */ | |
463ee0b2 LW |
2912 | OP *k; |
2913 | kid = kUNOP->op_first; /* get past rv2gv */ | |
79072805 | 2914 | |
463ee0b2 | 2915 | if (kid->op_type == OP_SCOPE || kid->op_type == OP_LEAVE) { |
79072805 | 2916 | linklist(kid); |
463ee0b2 LW |
2917 | if (kid->op_type == OP_SCOPE) { |
2918 | k = kid->op_next; | |
2919 | kid->op_next = 0; | |
2920 | peep(k); | |
79072805 | 2921 | } |
463ee0b2 LW |
2922 | else if (kid->op_type == OP_LEAVE) { |
2923 | kid->op_type = OP_NULL; /* wipe out leave */ | |
2924 | kid->op_ppaddr = ppaddr[OP_NULL]; | |
2925 | kid->op_next = kid; | |
2926 | ||
2927 | for (k = kLISTOP->op_first->op_next; k; k = k->op_next) { | |
2928 | if (k->op_next == kid) | |
2929 | k->op_next = 0; | |
2930 | } | |
2931 | peep(kLISTOP->op_first); | |
2932 | } | |
2933 | kid = cLISTOP->op_first->op_sibling; /* get past pushmark */ | |
2934 | kid->op_type = OP_NULL; /* wipe out rv2gv */ | |
79072805 LW |
2935 | kid->op_ppaddr = ppaddr[OP_NULL]; |
2936 | kid->op_next = kid; | |
79072805 LW |
2937 | op->op_flags |= OPf_SPECIAL; |
2938 | } | |
2939 | } | |
2940 | return op; | |
2941 | } | |
2942 | ||
2943 | OP * | |
2944 | ck_split(op) | |
2945 | OP *op; | |
2946 | { | |
2947 | register OP *kid; | |
ed6116ce | 2948 | PMOP* pm; |
79072805 LW |
2949 | |
2950 | if (op->op_flags & OPf_STACKED) | |
2951 | return no_fh_allowed(op); | |
2952 | ||
2953 | if (!(op->op_flags & OPf_KIDS)) | |
2954 | op = prepend_elem(OP_SPLIT, | |
2955 | pmruntime( | |
2956 | newPMOP(OP_MATCH, OPf_SPECIAL), | |
2957 | newSVOP(OP_CONST, 0, newSVpv(" ", 1)), | |
2958 | Nullop), | |
2959 | op); | |
2960 | ||
2961 | kid = cLISTOP->op_first; | |
2962 | if (kid->op_type == OP_PUSHMARK) | |
463ee0b2 | 2963 | croak("panic: ck_split"); |
79072805 LW |
2964 | |
2965 | if (kid->op_type != OP_MATCH) { | |
2966 | OP *sibl = kid->op_sibling; | |
463ee0b2 | 2967 | kid->op_sibling = 0; |
79072805 LW |
2968 | kid = pmruntime( newPMOP(OP_MATCH, OPf_SPECIAL), kid, Nullop); |
2969 | if (cLISTOP->op_first == cLISTOP->op_last) | |
2970 | cLISTOP->op_last = kid; | |
2971 | cLISTOP->op_first = kid; | |
2972 | kid->op_sibling = sibl; | |
2973 | } | |
ed6116ce LW |
2974 | pm = (PMOP*)kid; |
2975 | if (pm->op_pmshort && !(pm->op_pmflags & PMf_ALL)) { | |
2976 | sv_free(pm->op_pmshort); /* can't use substring to optimize */ | |
2977 | pm->op_pmshort = 0; | |
2978 | } | |
79072805 LW |
2979 | |
2980 | kid->op_type = OP_PUSHRE; | |
2981 | kid->op_ppaddr = ppaddr[OP_PUSHRE]; | |
2982 | scalar(kid); | |
2983 | ||
2984 | if (!kid->op_sibling) | |
2985 | append_elem(OP_SPLIT, op, newSVREF(newGVOP(OP_GV, 0, defgv)) ); | |
2986 | ||
2987 | kid = kid->op_sibling; | |
2988 | scalar(kid); | |
2989 | ||
2990 | if (!kid->op_sibling) | |
2991 | append_elem(OP_SPLIT, op, newSVOP(OP_CONST, 0, newSViv(0))); | |
2992 | ||
2993 | kid = kid->op_sibling; | |
2994 | scalar(kid); | |
2995 | ||
2996 | if (kid->op_sibling) | |
2997 | return too_many_arguments(op); | |
2998 | ||
2999 | return op; | |
3000 | } | |
3001 | ||
3002 | OP * | |
3003 | ck_subr(op) | |
3004 | OP *op; | |
3005 | { | |
93a17b20 LW |
3006 | OP *o = ((cUNOP->op_first->op_sibling) |
3007 | ? cUNOP : ((UNOP*)cUNOP->op_first))->op_first->op_sibling; | |
3008 | ||
3009 | if (o->op_type == OP_RV2CV) { | |
3010 | o->op_type = OP_NULL; /* disable rv2cv */ | |
3011 | o->op_ppaddr = ppaddr[OP_NULL]; | |
3012 | } | |
79072805 | 3013 | op->op_private = 0; |
93a17b20 LW |
3014 | if (perldb) |
3015 | op->op_private |= OPpSUBR_DB; | |
79072805 LW |
3016 | return op; |
3017 | } | |
3018 | ||
3019 | OP * | |
3020 | ck_trunc(op) | |
3021 | OP *op; | |
3022 | { | |
3023 | if (op->op_flags & OPf_KIDS) { | |
3024 | SVOP *kid = (SVOP*)cUNOP->op_first; | |
3025 | ||
3026 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) | |
3027 | op->op_flags |= OPf_SPECIAL; | |
3028 | } | |
3029 | return ck_fun(op); | |
3030 | } | |
3031 | ||
463ee0b2 LW |
3032 | /* A peephole optimizer. We visit the ops in the order they're to execute. */ |
3033 | ||
79072805 LW |
3034 | void |
3035 | peep(op) | |
3036 | register OP* op; | |
3037 | { | |
3038 | register OP* oldop = 0; | |
3039 | if (!op || op->op_seq) | |
3040 | return; | |
3041 | for (; op; op = op->op_next) { | |
3042 | if (op->op_seq) | |
3043 | return; | |
3044 | switch (op->op_type) { | |
3045 | case OP_NULL: | |
3046 | case OP_SCALAR: | |
93a17b20 | 3047 | case OP_LINESEQ: |
463ee0b2 | 3048 | case OP_SCOPE: |
79072805 LW |
3049 | if (oldop) { |
3050 | oldop->op_next = op->op_next; | |
3051 | continue; | |
3052 | } | |
463ee0b2 | 3053 | op->op_seq = ++op_seqmax; |
79072805 LW |
3054 | break; |
3055 | ||
3056 | case OP_GV: | |
463ee0b2 LW |
3057 | if (op->op_next->op_type == OP_RV2SV && |
3058 | op->op_next->op_private < OP_RV2GV) | |
3059 | { | |
79072805 LW |
3060 | op->op_next->op_type = OP_NULL; |
3061 | op->op_next->op_ppaddr = ppaddr[OP_NULL]; | |
93a17b20 | 3062 | op->op_flags |= op->op_next->op_flags & OPf_INTRO; |
79072805 LW |
3063 | op->op_next = op->op_next->op_next; |
3064 | op->op_type = OP_GVSV; | |
3065 | op->op_ppaddr = ppaddr[OP_GVSV]; | |
3066 | } | |
463ee0b2 | 3067 | op->op_seq = ++op_seqmax; |
79072805 LW |
3068 | break; |
3069 | ||
3070 | case OP_GREPWHILE: | |
3071 | case OP_AND: | |
3072 | case OP_OR: | |
463ee0b2 | 3073 | op->op_seq = ++op_seqmax; |
79072805 LW |
3074 | peep(cLOGOP->op_other); |
3075 | break; | |
3076 | ||
3077 | case OP_COND_EXPR: | |
463ee0b2 | 3078 | op->op_seq = ++op_seqmax; |
79072805 LW |
3079 | peep(cCONDOP->op_true); |
3080 | peep(cCONDOP->op_false); | |
3081 | break; | |
3082 | ||
3083 | case OP_ENTERLOOP: | |
463ee0b2 | 3084 | op->op_seq = ++op_seqmax; |
79072805 LW |
3085 | peep(cLOOP->op_redoop); |
3086 | peep(cLOOP->op_nextop); | |
3087 | peep(cLOOP->op_lastop); | |
3088 | break; | |
3089 | ||
3090 | case OP_MATCH: | |
3091 | case OP_SUBST: | |
463ee0b2 | 3092 | op->op_seq = ++op_seqmax; |
79072805 LW |
3093 | peep(cPMOP->op_pmreplroot); |
3094 | break; | |
3095 | ||
3096 | default: | |
463ee0b2 | 3097 | op->op_seq = ++op_seqmax; |
79072805 LW |
3098 | break; |
3099 | } | |
3100 | oldop = op; | |
3101 | } | |
3102 | } |