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