Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* op.c |
79072805 | 2 | * |
9607fc9c | 3 | * Copyright (c) 1991-1997, Larry Wall |
79072805 LW |
4 | * |
5 | * You may distribute under the terms of either the GNU General Public | |
6 | * License or the Artistic License, as specified in the README file. | |
7 | * | |
a0d0e21e LW |
8 | */ |
9 | ||
10 | /* | |
11 | * "You see: Mr. Drogo, he married poor Miss Primula Brandybuck. She was | |
12 | * our Mr. Bilbo's first cousin on the mother's side (her mother being the | |
13 | * youngest of the Old Took's daughters); and Mr. Drogo was his second | |
14 | * cousin. So Mr. Frodo is his first *and* second cousin, once removed | |
15 | * either way, as the saying is, if you follow me." --the Gaffer | |
79072805 LW |
16 | */ |
17 | ||
18 | #include "EXTERN.h" | |
19 | #include "perl.h" | |
20 | ||
c07a80fd | 21 | #define USE_OP_MASK /* Turned on by default in 5.002beta1h */ |
22 | ||
e50aee73 AD |
23 | #ifdef USE_OP_MASK |
24 | /* | |
25 | * In the following definition, the ", (OP *) op" is just to make the compiler | |
a5f75d66 | 26 | * think the expression is of the right type: croak actually does a Siglongjmp. |
e50aee73 | 27 | */ |
c07a80fd | 28 | #define CHECKOP(type,op) \ |
28757baa | 29 | ((op_mask && op_mask[type]) \ |
30 | ? ( op_free((OP*)op), \ | |
31 | croak("%s trapped by operation mask", op_desc[type]), \ | |
32 | Nullop ) \ | |
c07a80fd | 33 | : (*check[type])((OP*)op)) |
e50aee73 AD |
34 | #else |
35 | #define CHECKOP(type,op) (*check[type])(op) | |
36 | #endif /* USE_OP_MASK */ | |
37 | ||
a0d0e21e | 38 | static I32 list_assignment _((OP *op)); |
4633a7c4 | 39 | static OP *bad_type _((I32 n, char *t, char *name, OP *kid)); |
a0d0e21e LW |
40 | static OP *modkids _((OP *op, I32 type)); |
41 | static OP *no_fh_allowed _((OP *op)); | |
3fe9a6f1 | 42 | static bool scalar_mod_type _((OP *op, I32 type)); |
a0d0e21e | 43 | static OP *scalarboolean _((OP *op)); |
4633a7c4 LW |
44 | static OP *too_few_arguments _((OP *op, char* name)); |
45 | static OP *too_many_arguments _((OP *op, char* name)); | |
a0d0e21e | 46 | static void null _((OP* op)); |
bbce6d69 | 47 | static PADOFFSET pad_findlex _((char* name, PADOFFSET newoff, U32 seq, |
748a9306 | 48 | CV* startcv, I32 cx_ix)); |
79072805 | 49 | |
4633a7c4 | 50 | static char* |
46fc3d4c | 51 | gv_ename(gv) |
52 | GV* gv; | |
4633a7c4 LW |
53 | { |
54 | SV* tmpsv = sv_newmortal(); | |
46fc3d4c | 55 | gv_efullname3(tmpsv, gv, Nullch); |
4633a7c4 LW |
56 | return SvPV(tmpsv,na); |
57 | } | |
58 | ||
8990e307 | 59 | static OP * |
79072805 LW |
60 | no_fh_allowed(op) |
61 | OP *op; | |
62 | { | |
46fc3d4c | 63 | yyerror(form("Missing comma after first argument to %s function", |
64 | op_desc[op->op_type])); | |
79072805 LW |
65 | return op; |
66 | } | |
67 | ||
8990e307 | 68 | static OP * |
4633a7c4 LW |
69 | too_few_arguments(op, name) |
70 | OP* op; | |
71 | char* name; | |
79072805 | 72 | { |
46fc3d4c | 73 | yyerror(form("Not enough arguments for %s", name)); |
79072805 LW |
74 | return op; |
75 | } | |
76 | ||
8990e307 | 77 | static OP * |
4633a7c4 | 78 | too_many_arguments(op, name) |
79072805 | 79 | OP *op; |
4633a7c4 | 80 | char* name; |
79072805 | 81 | { |
46fc3d4c | 82 | yyerror(form("Too many arguments for %s", name)); |
79072805 LW |
83 | return op; |
84 | } | |
85 | ||
8990e307 | 86 | static OP * |
4633a7c4 | 87 | bad_type(n, t, name, kid) |
8990e307 LW |
88 | I32 n; |
89 | char *t; | |
4633a7c4 | 90 | char *name; |
8990e307 LW |
91 | OP *kid; |
92 | { | |
46fc3d4c | 93 | yyerror(form("Type of arg %d to %s must be %s (not %s)", |
94 | (int)n, name, t, op_desc[kid->op_type])); | |
8990e307 LW |
95 | return op; |
96 | } | |
97 | ||
a0d0e21e LW |
98 | void |
99 | assertref(op) | |
100 | OP *op; | |
101 | { | |
102 | int type = op->op_type; | |
103 | if (type != OP_AELEM && type != OP_HELEM) { | |
46fc3d4c | 104 | yyerror(form("Can't use subscript on %s", op_desc[type])); |
8ebc5c01 | 105 | if (type == OP_ENTERSUB || type == OP_RV2HV || type == OP_PADHV) |
748a9306 | 106 | warn("(Did you mean $ or @ instead of %c?)\n", |
8ebc5c01 | 107 | type == OP_ENTERSUB ? '&' : '%'); |
a0d0e21e LW |
108 | } |
109 | } | |
110 | ||
79072805 LW |
111 | /* "register" allocation */ |
112 | ||
113 | PADOFFSET | |
93a17b20 LW |
114 | pad_allocmy(name) |
115 | char *name; | |
116 | { | |
a0d0e21e LW |
117 | PADOFFSET off; |
118 | SV *sv; | |
119 | ||
120 | if (!(isALPHA(name[1]) || name[1] == '_' && (int)strlen(name) > 2)) { | |
46fc3d4c | 121 | if (!isPRINT(name[1])) { |
122 | name[3] = '\0'; | |
123 | name[2] = toCTRL(name[1]); | |
124 | name[1] = '^'; | |
125 | } | |
a0d0e21e LW |
126 | croak("Can't use global %s in \"my\"",name); |
127 | } | |
b1cb66bf | 128 | if (AvFILL(comppad_name) >= 0) { |
129 | SV **svp = AvARRAY(comppad_name); | |
130 | for (off = AvFILL(comppad_name); off > comppad_name_floor; off--) { | |
131 | if ((sv = svp[off]) | |
132 | && sv != &sv_undef | |
133 | && SvIVX(sv) == 999999999 /* var is in open scope */ | |
134 | && strEQ(name, SvPVX(sv))) | |
135 | { | |
136 | warn("\"my\" variable %s masks earlier declaration in same scope", name); | |
137 | break; | |
138 | } | |
139 | } | |
140 | } | |
a0d0e21e LW |
141 | off = pad_alloc(OP_PADSV, SVs_PADMY); |
142 | sv = NEWSV(1102,0); | |
93a17b20 LW |
143 | sv_upgrade(sv, SVt_PVNV); |
144 | sv_setpv(sv, name); | |
8990e307 | 145 | av_store(comppad_name, off, sv); |
748a9306 | 146 | SvNVX(sv) = (double)999999999; |
8990e307 LW |
147 | SvIVX(sv) = 0; /* Not yet introduced--see newSTATEOP */ |
148 | if (!min_intro_pending) | |
149 | min_intro_pending = off; | |
150 | max_intro_pending = off; | |
93a17b20 | 151 | if (*name == '@') |
463ee0b2 | 152 | av_store(comppad, off, (SV*)newAV()); |
93a17b20 | 153 | else if (*name == '%') |
463ee0b2 | 154 | av_store(comppad, off, (SV*)newHV()); |
ed6116ce | 155 | SvPADMY_on(curpad[off]); |
93a17b20 LW |
156 | return off; |
157 | } | |
158 | ||
748a9306 | 159 | static PADOFFSET |
e9a444f0 | 160 | #ifndef CAN_PROTOTYPE |
748a9306 | 161 | pad_findlex(name, newoff, seq, startcv, cx_ix) |
93a17b20 | 162 | char *name; |
748a9306 | 163 | PADOFFSET newoff; |
bbce6d69 | 164 | U32 seq; |
748a9306 LW |
165 | CV* startcv; |
166 | I32 cx_ix; | |
e9a444f0 | 167 | #else |
bbce6d69 | 168 | pad_findlex(char *name, PADOFFSET newoff, U32 seq, CV* startcv, I32 cx_ix) |
e9a444f0 | 169 | #endif |
93a17b20 | 170 | { |
748a9306 | 171 | CV *cv; |
93a17b20 LW |
172 | I32 off; |
173 | SV *sv; | |
93a17b20 LW |
174 | register I32 i; |
175 | register CONTEXT *cx; | |
a0d0e21e | 176 | int saweval; |
93a17b20 | 177 | |
748a9306 | 178 | for (cv = startcv; cv; cv = CvOUTSIDE(cv)) { |
4fdae800 | 179 | AV *curlist = CvPADLIST(cv); |
180 | SV **svp = av_fetch(curlist, 0, FALSE); | |
748a9306 | 181 | AV *curname; |
4fdae800 | 182 | |
748a9306 | 183 | if (!svp || *svp == &sv_undef) |
4633a7c4 | 184 | continue; |
748a9306 LW |
185 | curname = (AV*)*svp; |
186 | svp = AvARRAY(curname); | |
187 | for (off = AvFILL(curname); off > 0; off--) { | |
188 | if ((sv = svp[off]) && | |
189 | sv != &sv_undef && | |
190 | seq <= SvIVX(sv) && | |
13826f2c | 191 | seq > I_32(SvNVX(sv)) && |
748a9306 LW |
192 | strEQ(SvPVX(sv), name)) |
193 | { | |
5f05dabc | 194 | I32 depth; |
195 | AV *oldpad; | |
196 | SV *oldsv; | |
197 | ||
198 | depth = CvDEPTH(cv); | |
199 | if (!depth) { | |
9607fc9c | 200 | if (newoff) { |
201 | if (SvFAKE(sv)) | |
202 | continue; | |
4fdae800 | 203 | return 0; /* don't clone from inactive stack frame */ |
9607fc9c | 204 | } |
5f05dabc | 205 | depth = 1; |
206 | } | |
207 | oldpad = (AV*)*av_fetch(curlist, depth, FALSE); | |
208 | oldsv = *av_fetch(oldpad, off, TRUE); | |
748a9306 | 209 | if (!newoff) { /* Not a mere clone operation. */ |
9607fc9c | 210 | SV *namesv = NEWSV(1103,0); |
748a9306 | 211 | newoff = pad_alloc(OP_PADSV, SVs_PADMY); |
9607fc9c | 212 | sv_upgrade(namesv, SVt_PVNV); |
213 | sv_setpv(namesv, name); | |
214 | av_store(comppad_name, newoff, namesv); | |
215 | SvNVX(namesv) = (double)curcop->cop_seq; | |
216 | SvIVX(namesv) = 999999999; /* A ref, intro immediately */ | |
217 | SvFAKE_on(namesv); /* A ref, not a real var */ | |
774d564b | 218 | if (CvANON(compcv) || SvTYPE(compcv) == SVt_PVFM) { |
28757baa | 219 | /* "It's closures all the way down." */ |
220 | CvCLONE_on(compcv); | |
54310121 | 221 | if (cv == startcv) { |
222 | if (CvANON(compcv)) | |
223 | oldsv = Nullsv; /* no need to keep ref */ | |
224 | } | |
225 | else { | |
28757baa | 226 | CV *bcv; |
227 | for (bcv = startcv; | |
228 | bcv && bcv != cv && !CvCLONE(bcv); | |
229 | bcv = CvOUTSIDE(bcv)) { | |
230 | if (CvANON(bcv)) | |
231 | CvCLONE_on(bcv); | |
232 | else { | |
774d564b | 233 | if (dowarn && !CvUNIQUE(cv)) |
44a8e56a | 234 | warn( |
235 | "Variable \"%s\" may be unavailable", | |
28757baa | 236 | name); |
237 | break; | |
238 | } | |
239 | } | |
240 | } | |
241 | } | |
44a8e56a | 242 | else if (!CvUNIQUE(compcv)) { |
9607fc9c | 243 | if (dowarn && !SvFAKE(sv) && !CvUNIQUE(cv)) |
44a8e56a | 244 | warn("Variable \"%s\" will not stay shared", name); |
5f05dabc | 245 | } |
748a9306 LW |
246 | } |
247 | av_store(comppad, newoff, SvREFCNT_inc(oldsv)); | |
748a9306 LW |
248 | return newoff; |
249 | } | |
93a17b20 LW |
250 | } |
251 | } | |
252 | ||
253 | /* Nothing in current lexical context--try eval's context, if any. | |
254 | * This is necessary to let the perldb get at lexically scoped variables. | |
255 | * XXX This will also probably interact badly with eval tree caching. | |
256 | */ | |
257 | ||
a0d0e21e | 258 | saweval = 0; |
748a9306 | 259 | for (i = cx_ix; i >= 0; i--) { |
93a17b20 LW |
260 | cx = &cxstack[i]; |
261 | switch (cx->cx_type) { | |
262 | default: | |
748a9306 LW |
263 | if (i == 0 && saweval) { |
264 | seq = cxstack[saweval].blk_oldcop->cop_seq; | |
265 | return pad_findlex(name, newoff, seq, main_cv, 0); | |
266 | } | |
93a17b20 LW |
267 | break; |
268 | case CXt_EVAL: | |
44a8e56a | 269 | switch (cx->blk_eval.old_op_type) { |
270 | case OP_ENTEREVAL: | |
271 | saweval = i; | |
272 | break; | |
273 | case OP_REQUIRE: | |
274 | /* require must have its own scope */ | |
275 | return 0; | |
276 | } | |
93a17b20 LW |
277 | break; |
278 | case CXt_SUB: | |
279 | if (!saweval) | |
280 | return 0; | |
281 | cv = cx->blk_sub.cv; | |
748a9306 LW |
282 | if (debstash && CvSTASH(cv) == debstash) { /* ignore DB'* scope */ |
283 | saweval = i; /* so we know where we were called from */ | |
93a17b20 | 284 | continue; |
93a17b20 | 285 | } |
748a9306 LW |
286 | seq = cxstack[saweval].blk_oldcop->cop_seq; |
287 | return pad_findlex(name, newoff, seq, cv, i-1); | |
93a17b20 LW |
288 | } |
289 | } | |
290 | ||
748a9306 LW |
291 | return 0; |
292 | } | |
a0d0e21e | 293 | |
748a9306 LW |
294 | PADOFFSET |
295 | pad_findmy(name) | |
296 | char *name; | |
297 | { | |
298 | I32 off; | |
54310121 | 299 | I32 pendoff = 0; |
748a9306 LW |
300 | SV *sv; |
301 | SV **svp = AvARRAY(comppad_name); | |
bbce6d69 | 302 | U32 seq = cop_seqmax; |
748a9306 LW |
303 | |
304 | /* The one we're looking for is probably just before comppad_name_fill. */ | |
4633a7c4 | 305 | for (off = AvFILL(comppad_name); off > 0; off--) { |
a0d0e21e LW |
306 | if ((sv = svp[off]) && |
307 | sv != &sv_undef && | |
54310121 | 308 | (!SvIVX(sv) || |
309 | (seq <= SvIVX(sv) && | |
310 | seq > I_32(SvNVX(sv)))) && | |
a0d0e21e LW |
311 | strEQ(SvPVX(sv), name)) |
312 | { | |
54310121 | 313 | if (SvIVX(sv)) |
314 | return (PADOFFSET)off; | |
315 | pendoff = off; /* this pending def. will override import */ | |
a0d0e21e LW |
316 | } |
317 | } | |
748a9306 LW |
318 | |
319 | /* See if it's in a nested scope */ | |
320 | off = pad_findlex(name, 0, seq, CvOUTSIDE(compcv), cxstack_ix); | |
54310121 | 321 | if (off) { |
322 | /* If there is a pending local definition, this new alias must die */ | |
323 | if (pendoff) | |
324 | SvIVX(AvARRAY(comppad_name)[off]) = seq; | |
748a9306 | 325 | return off; |
54310121 | 326 | } |
748a9306 | 327 | |
93a17b20 LW |
328 | return 0; |
329 | } | |
330 | ||
331 | void | |
332 | pad_leavemy(fill) | |
333 | I32 fill; | |
334 | { | |
335 | I32 off; | |
8990e307 | 336 | SV **svp = AvARRAY(comppad_name); |
93a17b20 | 337 | SV *sv; |
8990e307 LW |
338 | if (min_intro_pending && fill < min_intro_pending) { |
339 | for (off = max_intro_pending; off >= min_intro_pending; off--) { | |
a0d0e21e | 340 | if ((sv = svp[off]) && sv != &sv_undef) |
8990e307 LW |
341 | warn("%s never introduced", SvPVX(sv)); |
342 | } | |
343 | } | |
344 | /* "Deintroduce" my variables that are leaving with this scope. */ | |
345 | for (off = AvFILL(comppad_name); off > fill; off--) { | |
748a9306 | 346 | if ((sv = svp[off]) && sv != &sv_undef && SvIVX(sv) == 999999999) |
463ee0b2 | 347 | SvIVX(sv) = cop_seqmax; |
93a17b20 LW |
348 | } |
349 | } | |
350 | ||
351 | PADOFFSET | |
79072805 LW |
352 | pad_alloc(optype,tmptype) |
353 | I32 optype; | |
ed6116ce | 354 | U32 tmptype; |
79072805 LW |
355 | { |
356 | SV *sv; | |
357 | I32 retval; | |
358 | ||
359 | if (AvARRAY(comppad) != curpad) | |
463ee0b2 | 360 | croak("panic: pad_alloc"); |
a0d0e21e LW |
361 | if (pad_reset_pending) |
362 | pad_reset(); | |
ed6116ce | 363 | if (tmptype & SVs_PADMY) { |
79072805 LW |
364 | do { |
365 | sv = *av_fetch(comppad, AvFILL(comppad) + 1, TRUE); | |
ed6116ce | 366 | } while (SvPADBUSY(sv)); /* need a fresh one */ |
79072805 LW |
367 | retval = AvFILL(comppad); |
368 | } | |
369 | else { | |
bbce6d69 | 370 | SV **names = AvARRAY(comppad_name); |
371 | SSize_t names_fill = AvFILL(comppad_name); | |
372 | for (;;) { | |
373 | /* | |
374 | * "foreach" index vars temporarily become aliases to non-"my" | |
375 | * values. Thus we must skip, not just pad values that are | |
376 | * marked as current pad values, but also those with names. | |
377 | */ | |
378 | if (++padix <= names_fill && | |
379 | (sv = names[padix]) && sv != &sv_undef) | |
380 | continue; | |
381 | sv = *av_fetch(comppad, padix, TRUE); | |
382 | if (!(SvFLAGS(sv) & (SVs_PADTMP|SVs_PADMY))) | |
383 | break; | |
384 | } | |
79072805 LW |
385 | retval = padix; |
386 | } | |
8990e307 | 387 | SvFLAGS(sv) |= tmptype; |
79072805 | 388 | curpad = AvARRAY(comppad); |
760ac839 | 389 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad alloc %ld for %s\n", (long) retval, op_name[optype])); |
79072805 LW |
390 | return (PADOFFSET)retval; |
391 | } | |
392 | ||
393 | SV * | |
a0d0e21e | 394 | #ifndef CAN_PROTOTYPE |
79072805 LW |
395 | pad_sv(po) |
396 | PADOFFSET po; | |
8990e307 LW |
397 | #else |
398 | pad_sv(PADOFFSET po) | |
a0d0e21e | 399 | #endif /* CAN_PROTOTYPE */ |
79072805 LW |
400 | { |
401 | if (!po) | |
463ee0b2 | 402 | croak("panic: pad_sv po"); |
68dc0745 | 403 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad sv %lu\n", (unsigned long)po)); |
79072805 LW |
404 | return curpad[po]; /* eventually we'll turn this into a macro */ |
405 | } | |
406 | ||
407 | void | |
a0d0e21e | 408 | #ifndef CAN_PROTOTYPE |
79072805 LW |
409 | pad_free(po) |
410 | PADOFFSET po; | |
8990e307 LW |
411 | #else |
412 | pad_free(PADOFFSET po) | |
a0d0e21e | 413 | #endif /* CAN_PROTOTYPE */ |
79072805 | 414 | { |
a0d0e21e LW |
415 | if (!curpad) |
416 | return; | |
79072805 | 417 | if (AvARRAY(comppad) != curpad) |
463ee0b2 | 418 | croak("panic: pad_free curpad"); |
79072805 | 419 | if (!po) |
463ee0b2 | 420 | croak("panic: pad_free po"); |
68dc0745 | 421 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad free %lu\n", (unsigned long)po)); |
ff0cee69 | 422 | if (curpad[po] && !SvIMMORTAL(curpad[po])) |
ed6116ce | 423 | SvPADTMP_off(curpad[po]); |
a0d0e21e | 424 | if ((I32)po < padix) |
79072805 LW |
425 | padix = po - 1; |
426 | } | |
427 | ||
428 | void | |
a0d0e21e | 429 | #ifndef CAN_PROTOTYPE |
79072805 LW |
430 | pad_swipe(po) |
431 | PADOFFSET po; | |
8990e307 LW |
432 | #else |
433 | pad_swipe(PADOFFSET po) | |
a0d0e21e | 434 | #endif /* CAN_PROTOTYPE */ |
79072805 LW |
435 | { |
436 | if (AvARRAY(comppad) != curpad) | |
463ee0b2 | 437 | croak("panic: pad_swipe curpad"); |
79072805 | 438 | if (!po) |
463ee0b2 | 439 | croak("panic: pad_swipe po"); |
68dc0745 | 440 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad swipe %lu\n", (unsigned long)po)); |
ed6116ce | 441 | SvPADTMP_off(curpad[po]); |
a0d0e21e LW |
442 | curpad[po] = NEWSV(1107,0); |
443 | SvPADTMP_on(curpad[po]); | |
444 | if ((I32)po < padix) | |
79072805 LW |
445 | padix = po - 1; |
446 | } | |
447 | ||
448 | void | |
449 | pad_reset() | |
450 | { | |
451 | register I32 po; | |
452 | ||
453 | if (AvARRAY(comppad) != curpad) | |
463ee0b2 | 454 | croak("panic: pad_reset curpad"); |
760ac839 | 455 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad reset\n")); |
748a9306 LW |
456 | if (!tainting) { /* Can't mix tainted and non-tainted temporaries. */ |
457 | for (po = AvMAX(comppad); po > padix_floor; po--) { | |
ff0cee69 | 458 | if (curpad[po] && !SvIMMORTAL(curpad[po])) |
748a9306 LW |
459 | SvPADTMP_off(curpad[po]); |
460 | } | |
461 | padix = padix_floor; | |
79072805 | 462 | } |
a0d0e21e | 463 | pad_reset_pending = FALSE; |
79072805 LW |
464 | } |
465 | ||
466 | /* Destructor */ | |
467 | ||
468 | void | |
469 | op_free(op) | |
470 | OP *op; | |
471 | { | |
85e6fe83 | 472 | register OP *kid, *nextkid; |
79072805 | 473 | |
b1cb66bf | 474 | if (!op || op->op_seq == (U16)-1) |
79072805 LW |
475 | return; |
476 | ||
477 | if (op->op_flags & OPf_KIDS) { | |
85e6fe83 LW |
478 | for (kid = cUNOP->op_first; kid; kid = nextkid) { |
479 | nextkid = kid->op_sibling; /* Get before next freeing kid */ | |
79072805 | 480 | op_free(kid); |
85e6fe83 | 481 | } |
79072805 LW |
482 | } |
483 | ||
79072805 | 484 | switch (op->op_type) { |
8990e307 LW |
485 | case OP_NULL: |
486 | op->op_targ = 0; /* Was holding old type, if any. */ | |
487 | break; | |
a0d0e21e LW |
488 | case OP_ENTEREVAL: |
489 | op->op_targ = 0; /* Was holding hints. */ | |
490 | break; | |
a6006777 | 491 | default: |
492 | if (!(op->op_flags & OPf_REF) || (check[op->op_type] != ck_ftst)) | |
493 | break; | |
494 | /* FALL THROUGH */ | |
463ee0b2 | 495 | case OP_GVSV: |
79072805 | 496 | case OP_GV: |
a6006777 | 497 | case OP_AELEMFAST: |
a0d0e21e | 498 | SvREFCNT_dec(cGVOP->op_gv); |
8990e307 LW |
499 | break; |
500 | case OP_NEXTSTATE: | |
501 | case OP_DBSTATE: | |
5f05dabc | 502 | Safefree(cCOP->cop_label); |
8990e307 | 503 | SvREFCNT_dec(cCOP->cop_filegv); |
79072805 LW |
504 | break; |
505 | case OP_CONST: | |
8990e307 | 506 | SvREFCNT_dec(cSVOP->op_sv); |
79072805 | 507 | break; |
748a9306 LW |
508 | case OP_GOTO: |
509 | case OP_NEXT: | |
510 | case OP_LAST: | |
511 | case OP_REDO: | |
512 | if (op->op_flags & (OPf_SPECIAL|OPf_STACKED|OPf_KIDS)) | |
513 | break; | |
514 | /* FALL THROUGH */ | |
a0d0e21e LW |
515 | case OP_TRANS: |
516 | Safefree(cPVOP->op_pv); | |
517 | break; | |
518 | case OP_SUBST: | |
519 | op_free(cPMOP->op_pmreplroot); | |
520 | /* FALL THROUGH */ | |
748a9306 | 521 | case OP_PUSHRE: |
a0d0e21e | 522 | case OP_MATCH: |
e50aee73 | 523 | pregfree(cPMOP->op_pmregexp); |
748a9306 | 524 | SvREFCNT_dec(cPMOP->op_pmshort); |
a0d0e21e | 525 | break; |
79072805 LW |
526 | } |
527 | ||
8990e307 LW |
528 | if (op->op_targ > 0) |
529 | pad_free(op->op_targ); | |
530 | ||
79072805 LW |
531 | Safefree(op); |
532 | } | |
533 | ||
8990e307 LW |
534 | static void |
535 | null(op) | |
536 | OP* op; | |
537 | { | |
538 | if (op->op_type != OP_NULL && op->op_targ > 0) | |
539 | pad_free(op->op_targ); | |
540 | op->op_targ = op->op_type; | |
541 | op->op_type = OP_NULL; | |
542 | op->op_ppaddr = ppaddr[OP_NULL]; | |
543 | } | |
544 | ||
79072805 LW |
545 | /* Contextualizers */ |
546 | ||
463ee0b2 | 547 | #define LINKLIST(o) ((o)->op_next ? (o)->op_next : linklist((OP*)o)) |
79072805 LW |
548 | |
549 | OP * | |
550 | linklist(op) | |
551 | OP *op; | |
552 | { | |
553 | register OP *kid; | |
554 | ||
555 | if (op->op_next) | |
556 | return op->op_next; | |
557 | ||
558 | /* establish postfix order */ | |
559 | if (cUNOP->op_first) { | |
560 | op->op_next = LINKLIST(cUNOP->op_first); | |
561 | for (kid = cUNOP->op_first; kid; kid = kid->op_sibling) { | |
562 | if (kid->op_sibling) | |
563 | kid->op_next = LINKLIST(kid->op_sibling); | |
564 | else | |
565 | kid->op_next = op; | |
566 | } | |
567 | } | |
568 | else | |
569 | op->op_next = op; | |
570 | ||
571 | return op->op_next; | |
572 | } | |
573 | ||
574 | OP * | |
575 | scalarkids(op) | |
576 | OP *op; | |
577 | { | |
578 | OP *kid; | |
579 | if (op && op->op_flags & OPf_KIDS) { | |
580 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
581 | scalar(kid); | |
582 | } | |
583 | return op; | |
584 | } | |
585 | ||
a0d0e21e | 586 | static OP * |
8990e307 LW |
587 | scalarboolean(op) |
588 | OP *op; | |
589 | { | |
590 | if (dowarn && | |
a0d0e21e LW |
591 | op->op_type == OP_SASSIGN && cBINOP->op_first->op_type == OP_CONST) { |
592 | line_t oldline = curcop->cop_line; | |
593 | ||
594 | if (copline != NOLINE) | |
595 | curcop->cop_line = copline; | |
596 | warn("Found = in conditional, should be =="); | |
597 | curcop->cop_line = oldline; | |
598 | } | |
8990e307 LW |
599 | return scalar(op); |
600 | } | |
601 | ||
602 | OP * | |
79072805 LW |
603 | scalar(op) |
604 | OP *op; | |
605 | { | |
606 | OP *kid; | |
607 | ||
a0d0e21e | 608 | /* assumes no premature commitment */ |
54310121 | 609 | if (!op || (op->op_flags & OPf_WANT) || error_count |
610 | || op->op_type == OP_RETURN) | |
79072805 LW |
611 | return op; |
612 | ||
54310121 | 613 | op->op_flags = (op->op_flags & ~OPf_WANT) | OPf_WANT_SCALAR; |
79072805 LW |
614 | |
615 | switch (op->op_type) { | |
616 | case OP_REPEAT: | |
4633a7c4 LW |
617 | if (op->op_private & OPpREPEAT_DOLIST) |
618 | null(((LISTOP*)cBINOP->op_first)->op_first); | |
79072805 | 619 | scalar(cBINOP->op_first); |
8990e307 | 620 | break; |
79072805 LW |
621 | case OP_OR: |
622 | case OP_AND: | |
623 | case OP_COND_EXPR: | |
8990e307 LW |
624 | for (kid = cUNOP->op_first->op_sibling; kid; kid = kid->op_sibling) |
625 | scalar(kid); | |
79072805 | 626 | break; |
a0d0e21e LW |
627 | case OP_SPLIT: |
628 | if ((kid = ((LISTOP*)op)->op_first) && kid->op_type == OP_PUSHRE) { | |
629 | if (!kPMOP->op_pmreplroot) | |
630 | deprecate("implicit split to @_"); | |
631 | } | |
632 | /* FALL THROUGH */ | |
79072805 LW |
633 | case OP_MATCH: |
634 | case OP_SUBST: | |
635 | case OP_NULL: | |
8990e307 LW |
636 | default: |
637 | if (op->op_flags & OPf_KIDS) { | |
638 | for (kid = cUNOP->op_first; kid; kid = kid->op_sibling) | |
639 | scalar(kid); | |
640 | } | |
79072805 LW |
641 | break; |
642 | case OP_LEAVE: | |
643 | case OP_LEAVETRY: | |
54310121 | 644 | kid = cLISTOP->op_first; |
645 | scalar(kid); | |
646 | while (kid = kid->op_sibling) { | |
647 | if (kid->op_sibling) | |
648 | scalarvoid(kid); | |
649 | else | |
650 | scalar(kid); | |
651 | } | |
652 | curcop = &compiling; | |
653 | break; | |
748a9306 | 654 | case OP_SCOPE: |
79072805 | 655 | case OP_LINESEQ: |
8990e307 | 656 | case OP_LIST: |
79072805 LW |
657 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) { |
658 | if (kid->op_sibling) | |
659 | scalarvoid(kid); | |
660 | else | |
661 | scalar(kid); | |
662 | } | |
93a17b20 | 663 | curcop = &compiling; |
79072805 LW |
664 | break; |
665 | } | |
79072805 LW |
666 | return op; |
667 | } | |
668 | ||
669 | OP * | |
670 | scalarvoid(op) | |
671 | OP *op; | |
672 | { | |
673 | OP *kid; | |
8990e307 LW |
674 | char* useless = 0; |
675 | SV* sv; | |
79072805 | 676 | |
54310121 | 677 | /* assumes no premature commitment */ |
678 | if (!op || (op->op_flags & OPf_WANT) == OPf_WANT_LIST || error_count | |
679 | || op->op_type == OP_RETURN) | |
79072805 LW |
680 | return op; |
681 | ||
54310121 | 682 | op->op_flags = (op->op_flags & ~OPf_WANT) | OPf_WANT_VOID; |
79072805 LW |
683 | |
684 | switch (op->op_type) { | |
685 | default: | |
8990e307 LW |
686 | if (!(opargs[op->op_type] & OA_FOLDCONST)) |
687 | break; | |
36477c24 | 688 | /* FALL THROUGH */ |
689 | case OP_REPEAT: | |
8990e307 LW |
690 | if (op->op_flags & OPf_STACKED) |
691 | break; | |
692 | /* FALL THROUGH */ | |
693 | case OP_GVSV: | |
694 | case OP_WANTARRAY: | |
695 | case OP_GV: | |
696 | case OP_PADSV: | |
697 | case OP_PADAV: | |
698 | case OP_PADHV: | |
699 | case OP_PADANY: | |
700 | case OP_AV2ARYLEN: | |
8990e307 | 701 | case OP_REF: |
a0d0e21e LW |
702 | case OP_REFGEN: |
703 | case OP_SREFGEN: | |
8990e307 LW |
704 | case OP_DEFINED: |
705 | case OP_HEX: | |
706 | case OP_OCT: | |
707 | case OP_LENGTH: | |
708 | case OP_SUBSTR: | |
709 | case OP_VEC: | |
710 | case OP_INDEX: | |
711 | case OP_RINDEX: | |
712 | case OP_SPRINTF: | |
713 | case OP_AELEM: | |
714 | case OP_AELEMFAST: | |
715 | case OP_ASLICE: | |
8990e307 LW |
716 | case OP_HELEM: |
717 | case OP_HSLICE: | |
718 | case OP_UNPACK: | |
719 | case OP_PACK: | |
8990e307 LW |
720 | case OP_JOIN: |
721 | case OP_LSLICE: | |
722 | case OP_ANONLIST: | |
723 | case OP_ANONHASH: | |
724 | case OP_SORT: | |
725 | case OP_REVERSE: | |
726 | case OP_RANGE: | |
727 | case OP_FLIP: | |
728 | case OP_FLOP: | |
729 | case OP_CALLER: | |
730 | case OP_FILENO: | |
731 | case OP_EOF: | |
732 | case OP_TELL: | |
733 | case OP_GETSOCKNAME: | |
734 | case OP_GETPEERNAME: | |
735 | case OP_READLINK: | |
736 | case OP_TELLDIR: | |
737 | case OP_GETPPID: | |
738 | case OP_GETPGRP: | |
739 | case OP_GETPRIORITY: | |
740 | case OP_TIME: | |
741 | case OP_TMS: | |
742 | case OP_LOCALTIME: | |
743 | case OP_GMTIME: | |
744 | case OP_GHBYNAME: | |
745 | case OP_GHBYADDR: | |
746 | case OP_GHOSTENT: | |
747 | case OP_GNBYNAME: | |
748 | case OP_GNBYADDR: | |
749 | case OP_GNETENT: | |
750 | case OP_GPBYNAME: | |
751 | case OP_GPBYNUMBER: | |
752 | case OP_GPROTOENT: | |
753 | case OP_GSBYNAME: | |
754 | case OP_GSBYPORT: | |
755 | case OP_GSERVENT: | |
756 | case OP_GPWNAM: | |
757 | case OP_GPWUID: | |
758 | case OP_GGRNAM: | |
759 | case OP_GGRGID: | |
760 | case OP_GETLOGIN: | |
a0d0e21e | 761 | if (!(op->op_private & OPpLVAL_INTRO)) |
c07a80fd | 762 | useless = op_desc[op->op_type]; |
8990e307 LW |
763 | break; |
764 | ||
765 | case OP_RV2GV: | |
766 | case OP_RV2SV: | |
767 | case OP_RV2AV: | |
768 | case OP_RV2HV: | |
a0d0e21e | 769 | if (!(op->op_private & OPpLVAL_INTRO) && |
85e6fe83 | 770 | (!op->op_sibling || op->op_sibling->op_type != OP_READLINE)) |
8990e307 LW |
771 | useless = "a variable"; |
772 | break; | |
79072805 | 773 | |
93a17b20 | 774 | case OP_NEXTSTATE: |
8990e307 | 775 | case OP_DBSTATE: |
748a9306 | 776 | curcop = ((COP*)op); /* for warning below */ |
93a17b20 LW |
777 | break; |
778 | ||
79072805 | 779 | case OP_CONST: |
8990e307 LW |
780 | sv = cSVOP->op_sv; |
781 | if (dowarn) { | |
782 | useless = "a constant"; | |
783 | if (SvNIOK(sv) && (SvNV(sv) == 0.0 || SvNV(sv) == 1.0)) | |
784 | useless = 0; | |
785 | else if (SvPOK(sv)) { | |
786 | if (strnEQ(SvPVX(sv), "di", 2) || | |
a0d0e21e | 787 | strnEQ(SvPVX(sv), "ds", 2) || |
8990e307 LW |
788 | strnEQ(SvPVX(sv), "ig", 2)) |
789 | useless = 0; | |
790 | } | |
791 | } | |
792 | null(op); /* don't execute a constant */ | |
793 | SvREFCNT_dec(sv); /* don't even remember it */ | |
79072805 LW |
794 | break; |
795 | ||
796 | case OP_POSTINC: | |
8990e307 | 797 | op->op_type = OP_PREINC; /* pre-increment is faster */ |
79072805 LW |
798 | op->op_ppaddr = ppaddr[OP_PREINC]; |
799 | break; | |
800 | ||
801 | case OP_POSTDEC: | |
8990e307 | 802 | op->op_type = OP_PREDEC; /* pre-decrement is faster */ |
79072805 LW |
803 | op->op_ppaddr = ppaddr[OP_PREDEC]; |
804 | break; | |
805 | ||
79072805 LW |
806 | case OP_OR: |
807 | case OP_AND: | |
808 | case OP_COND_EXPR: | |
809 | for (kid = cUNOP->op_first->op_sibling; kid; kid = kid->op_sibling) | |
810 | scalarvoid(kid); | |
811 | break; | |
5aabfad6 | 812 | |
a0d0e21e | 813 | case OP_NULL: |
748a9306 LW |
814 | if (op->op_targ == OP_NEXTSTATE || op->op_targ == OP_DBSTATE) |
815 | curcop = ((COP*)op); /* for warning below */ | |
a0d0e21e LW |
816 | if (op->op_flags & OPf_STACKED) |
817 | break; | |
5aabfad6 | 818 | /* FALL THROUGH */ |
79072805 LW |
819 | case OP_ENTERTRY: |
820 | case OP_ENTER: | |
821 | case OP_SCALAR: | |
79072805 LW |
822 | if (!(op->op_flags & OPf_KIDS)) |
823 | break; | |
54310121 | 824 | /* FALL THROUGH */ |
463ee0b2 | 825 | case OP_SCOPE: |
79072805 LW |
826 | case OP_LEAVE: |
827 | case OP_LEAVETRY: | |
a0d0e21e | 828 | case OP_LEAVELOOP: |
79072805 | 829 | case OP_LINESEQ: |
79072805 | 830 | case OP_LIST: |
79072805 LW |
831 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) |
832 | scalarvoid(kid); | |
833 | break; | |
c90c0ff4 | 834 | case OP_ENTEREVAL: |
835 | scalarkids(op); | |
836 | break; | |
5aabfad6 | 837 | case OP_REQUIRE: |
c90c0ff4 | 838 | /* all requires must return a boolean value */ |
5aabfad6 | 839 | op->op_flags &= ~OPf_WANT; |
840 | return scalar(op); | |
a0d0e21e LW |
841 | case OP_SPLIT: |
842 | if ((kid = ((LISTOP*)op)->op_first) && kid->op_type == OP_PUSHRE) { | |
843 | if (!kPMOP->op_pmreplroot) | |
844 | deprecate("implicit split to @_"); | |
845 | } | |
846 | break; | |
79072805 | 847 | } |
8990e307 LW |
848 | if (useless && dowarn) |
849 | warn("Useless use of %s in void context", useless); | |
79072805 LW |
850 | return op; |
851 | } | |
852 | ||
853 | OP * | |
854 | listkids(op) | |
855 | OP *op; | |
856 | { | |
857 | OP *kid; | |
858 | if (op && op->op_flags & OPf_KIDS) { | |
859 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
860 | list(kid); | |
861 | } | |
862 | return op; | |
863 | } | |
864 | ||
865 | OP * | |
866 | list(op) | |
867 | OP *op; | |
868 | { | |
869 | OP *kid; | |
870 | ||
a0d0e21e | 871 | /* assumes no premature commitment */ |
54310121 | 872 | if (!op || (op->op_flags & OPf_WANT) || error_count |
873 | || op->op_type == OP_RETURN) | |
79072805 LW |
874 | return op; |
875 | ||
54310121 | 876 | op->op_flags = (op->op_flags & ~OPf_WANT) | OPf_WANT_LIST; |
79072805 LW |
877 | |
878 | switch (op->op_type) { | |
879 | case OP_FLOP: | |
880 | case OP_REPEAT: | |
881 | list(cBINOP->op_first); | |
882 | break; | |
883 | case OP_OR: | |
884 | case OP_AND: | |
885 | case OP_COND_EXPR: | |
886 | for (kid = cUNOP->op_first->op_sibling; kid; kid = kid->op_sibling) | |
887 | list(kid); | |
888 | break; | |
889 | default: | |
890 | case OP_MATCH: | |
891 | case OP_SUBST: | |
892 | case OP_NULL: | |
893 | if (!(op->op_flags & OPf_KIDS)) | |
894 | break; | |
895 | if (!op->op_next && cUNOP->op_first->op_type == OP_FLOP) { | |
896 | list(cBINOP->op_first); | |
897 | return gen_constant_list(op); | |
898 | } | |
899 | case OP_LIST: | |
900 | listkids(op); | |
901 | break; | |
902 | case OP_LEAVE: | |
903 | case OP_LEAVETRY: | |
54310121 | 904 | kid = cLISTOP->op_first; |
905 | list(kid); | |
906 | while (kid = kid->op_sibling) { | |
907 | if (kid->op_sibling) | |
908 | scalarvoid(kid); | |
909 | else | |
910 | list(kid); | |
911 | } | |
912 | curcop = &compiling; | |
913 | break; | |
748a9306 | 914 | case OP_SCOPE: |
79072805 LW |
915 | case OP_LINESEQ: |
916 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) { | |
917 | if (kid->op_sibling) | |
918 | scalarvoid(kid); | |
919 | else | |
920 | list(kid); | |
921 | } | |
93a17b20 | 922 | curcop = &compiling; |
79072805 | 923 | break; |
c90c0ff4 | 924 | case OP_REQUIRE: |
925 | /* all requires must return a boolean value */ | |
926 | op->op_flags &= ~OPf_WANT; | |
927 | return scalar(op); | |
79072805 LW |
928 | } |
929 | return op; | |
930 | } | |
931 | ||
932 | OP * | |
933 | scalarseq(op) | |
934 | OP *op; | |
935 | { | |
936 | OP *kid; | |
937 | ||
463ee0b2 LW |
938 | if (op) { |
939 | if (op->op_type == OP_LINESEQ || | |
940 | op->op_type == OP_SCOPE || | |
79072805 | 941 | op->op_type == OP_LEAVE || |
463ee0b2 LW |
942 | op->op_type == OP_LEAVETRY) |
943 | { | |
944 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) { | |
ed6116ce | 945 | if (kid->op_sibling) { |
463ee0b2 | 946 | scalarvoid(kid); |
ed6116ce | 947 | } |
463ee0b2 LW |
948 | } |
949 | curcop = &compiling; | |
79072805 | 950 | } |
463ee0b2 | 951 | op->op_flags &= ~OPf_PARENS; |
85e6fe83 | 952 | if (hints & HINT_BLOCK_SCOPE) |
463ee0b2 | 953 | op->op_flags |= OPf_PARENS; |
79072805 | 954 | } |
8990e307 LW |
955 | else |
956 | op = newOP(OP_STUB, 0); | |
79072805 LW |
957 | return op; |
958 | } | |
959 | ||
a0d0e21e | 960 | static OP * |
463ee0b2 | 961 | modkids(op, type) |
79072805 LW |
962 | OP *op; |
963 | I32 type; | |
964 | { | |
965 | OP *kid; | |
966 | if (op && op->op_flags & OPf_KIDS) { | |
967 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
463ee0b2 | 968 | mod(kid, type); |
79072805 LW |
969 | } |
970 | return op; | |
971 | } | |
972 | ||
463ee0b2 | 973 | static I32 modcount; |
79072805 LW |
974 | |
975 | OP * | |
463ee0b2 | 976 | mod(op, type) |
79072805 LW |
977 | OP *op; |
978 | I32 type; | |
979 | { | |
980 | OP *kid; | |
981 | SV *sv; | |
982 | ||
a0d0e21e | 983 | if (!op || error_count) |
79072805 LW |
984 | return op; |
985 | ||
986 | switch (op->op_type) { | |
68dc0745 | 987 | case OP_UNDEF: |
3e3baf6d | 988 | modcount++; |
68dc0745 | 989 | return op; |
a0d0e21e | 990 | case OP_CONST: |
748a9306 | 991 | if (!(op->op_private & (OPpCONST_ARYBASE))) |
a0d0e21e LW |
992 | goto nomod; |
993 | if (eval_start && eval_start->op_type == OP_CONST) { | |
994 | compiling.cop_arybase = (I32)SvIV(((SVOP*)eval_start)->op_sv); | |
995 | eval_start = 0; | |
996 | } | |
997 | else if (!type) { | |
998 | SAVEI32(compiling.cop_arybase); | |
748a9306 | 999 | compiling.cop_arybase = 0; |
a0d0e21e LW |
1000 | } |
1001 | else if (type == OP_REFGEN) | |
1002 | goto nomod; | |
1003 | else | |
1004 | croak("That use of $[ is unsupported"); | |
1005 | break; | |
5f05dabc | 1006 | case OP_STUB: |
1007 | if (op->op_flags & OPf_PARENS) | |
1008 | break; | |
1009 | goto nomod; | |
a0d0e21e LW |
1010 | case OP_ENTERSUB: |
1011 | if ((type == OP_UNDEF || type == OP_REFGEN) && | |
1012 | !(op->op_flags & OPf_STACKED)) { | |
1013 | op->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
93a17b20 | 1014 | op->op_ppaddr = ppaddr[OP_RV2CV]; |
85e6fe83 LW |
1015 | assert(cUNOP->op_first->op_type == OP_NULL); |
1016 | null(((LISTOP*)cUNOP->op_first)->op_first); /* disable pushmark */ | |
79072805 LW |
1017 | break; |
1018 | } | |
1019 | /* FALL THROUGH */ | |
1020 | default: | |
a0d0e21e LW |
1021 | nomod: |
1022 | /* grep, foreach, subcalls, refgen */ | |
1023 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) | |
1024 | break; | |
46fc3d4c | 1025 | yyerror(form("Can't modify %s in %s", |
1026 | op_desc[op->op_type], | |
1027 | type ? op_desc[type] : "local")); | |
79072805 LW |
1028 | return op; |
1029 | ||
a0d0e21e LW |
1030 | case OP_PREINC: |
1031 | case OP_PREDEC: | |
1032 | case OP_POW: | |
1033 | case OP_MULTIPLY: | |
1034 | case OP_DIVIDE: | |
1035 | case OP_MODULO: | |
1036 | case OP_REPEAT: | |
1037 | case OP_ADD: | |
1038 | case OP_SUBTRACT: | |
1039 | case OP_CONCAT: | |
1040 | case OP_LEFT_SHIFT: | |
1041 | case OP_RIGHT_SHIFT: | |
1042 | case OP_BIT_AND: | |
1043 | case OP_BIT_XOR: | |
1044 | case OP_BIT_OR: | |
1045 | case OP_I_MULTIPLY: | |
1046 | case OP_I_DIVIDE: | |
1047 | case OP_I_MODULO: | |
1048 | case OP_I_ADD: | |
1049 | case OP_I_SUBTRACT: | |
1050 | if (!(op->op_flags & OPf_STACKED)) | |
1051 | goto nomod; | |
1052 | modcount++; | |
1053 | break; | |
1054 | ||
79072805 LW |
1055 | case OP_COND_EXPR: |
1056 | for (kid = cUNOP->op_first->op_sibling; kid; kid = kid->op_sibling) | |
463ee0b2 | 1057 | mod(kid, type); |
79072805 LW |
1058 | break; |
1059 | ||
1060 | case OP_RV2AV: | |
1061 | case OP_RV2HV: | |
706a304b SM |
1062 | if (!type && cUNOP->op_first->op_type != OP_GV) |
1063 | croak("Can't localize through a reference"); | |
748a9306 LW |
1064 | if (type == OP_REFGEN && op->op_flags & OPf_PARENS) { |
1065 | modcount = 10000; | |
1066 | return op; /* Treat \(@foo) like ordinary list. */ | |
1067 | } | |
1068 | /* FALL THROUGH */ | |
79072805 | 1069 | case OP_RV2GV: |
3fe9a6f1 | 1070 | if (scalar_mod_type(op, type)) |
1071 | goto nomod; | |
93a17b20 | 1072 | ref(cUNOP->op_first, op->op_type); |
79072805 LW |
1073 | /* FALL THROUGH */ |
1074 | case OP_AASSIGN: | |
1075 | case OP_ASLICE: | |
1076 | case OP_HSLICE: | |
93a17b20 LW |
1077 | case OP_NEXTSTATE: |
1078 | case OP_DBSTATE: | |
a0d0e21e LW |
1079 | case OP_REFGEN: |
1080 | case OP_CHOMP: | |
463ee0b2 | 1081 | modcount = 10000; |
79072805 | 1082 | break; |
463ee0b2 | 1083 | case OP_RV2SV: |
4633a7c4 | 1084 | if (!type && cUNOP->op_first->op_type != OP_GV) |
706a304b | 1085 | croak("Can't localize through a reference"); |
8990e307 | 1086 | ref(cUNOP->op_first, op->op_type); |
463ee0b2 | 1087 | /* FALL THROUGH */ |
79072805 | 1088 | case OP_GV: |
463ee0b2 LW |
1089 | case OP_AV2ARYLEN: |
1090 | case OP_SASSIGN: | |
8990e307 LW |
1091 | case OP_AELEMFAST: |
1092 | modcount++; | |
1093 | break; | |
1094 | ||
748a9306 LW |
1095 | case OP_PADAV: |
1096 | case OP_PADHV: | |
1097 | modcount = 10000; | |
58e0a6ae GS |
1098 | if (type == OP_REFGEN && op->op_flags & OPf_PARENS) |
1099 | return op; /* Treat \(@foo) like ordinary list. */ | |
3fe9a6f1 | 1100 | if (scalar_mod_type(op, type)) |
1101 | goto nomod; | |
748a9306 LW |
1102 | /* FALL THROUGH */ |
1103 | case OP_PADSV: | |
1104 | modcount++; | |
1105 | if (!type) | |
1106 | croak("Can't localize lexical variable %s", | |
1107 | SvPV(*av_fetch(comppad_name, op->op_targ, 4), na)); | |
463ee0b2 LW |
1108 | break; |
1109 | ||
748a9306 LW |
1110 | case OP_PUSHMARK: |
1111 | break; | |
a0d0e21e | 1112 | |
69969c6f SB |
1113 | case OP_KEYS: |
1114 | if (type != OP_SASSIGN) | |
1115 | goto nomod; | |
5f05dabc | 1116 | /* FALL THROUGH */ |
a0d0e21e | 1117 | case OP_POS: |
463ee0b2 | 1118 | case OP_VEC: |
a0d0e21e | 1119 | case OP_SUBSTR: |
8990e307 | 1120 | pad_free(op->op_targ); |
ed6116ce | 1121 | op->op_targ = pad_alloc(op->op_type, SVs_PADMY); |
5f05dabc | 1122 | assert(SvTYPE(PAD_SV(op->op_targ)) == SVt_NULL); |
8990e307 | 1123 | if (op->op_flags & OPf_KIDS) |
4633a7c4 | 1124 | mod(cBINOP->op_first->op_sibling, type); |
463ee0b2 | 1125 | break; |
a0d0e21e | 1126 | |
463ee0b2 LW |
1127 | case OP_AELEM: |
1128 | case OP_HELEM: | |
8990e307 | 1129 | ref(cBINOP->op_first, op->op_type); |
68dc0745 | 1130 | if (type == OP_ENTERSUB && |
1131 | !(op->op_private & (OPpLVAL_INTRO | OPpDEREF))) | |
1132 | op->op_private |= OPpLVAL_DEFER; | |
a0d0e21e | 1133 | modcount++; |
463ee0b2 LW |
1134 | break; |
1135 | ||
1136 | case OP_SCOPE: | |
1137 | case OP_LEAVE: | |
1138 | case OP_ENTER: | |
a0d0e21e LW |
1139 | if (op->op_flags & OPf_KIDS) |
1140 | mod(cLISTOP->op_last, type); | |
1141 | break; | |
1142 | ||
1143 | case OP_NULL: | |
463ee0b2 LW |
1144 | if (!(op->op_flags & OPf_KIDS)) |
1145 | break; | |
a0d0e21e LW |
1146 | if (op->op_targ != OP_LIST) { |
1147 | mod(cBINOP->op_first, type); | |
1148 | break; | |
1149 | } | |
1150 | /* FALL THROUGH */ | |
463ee0b2 LW |
1151 | case OP_LIST: |
1152 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
1153 | mod(kid, type); | |
1154 | break; | |
1155 | } | |
a0d0e21e LW |
1156 | op->op_flags |= OPf_MOD; |
1157 | ||
1158 | if (type == OP_AASSIGN || type == OP_SASSIGN) | |
1159 | op->op_flags |= OPf_SPECIAL|OPf_REF; | |
1160 | else if (!type) { | |
1161 | op->op_private |= OPpLVAL_INTRO; | |
463ee0b2 | 1162 | op->op_flags &= ~OPf_SPECIAL; |
463ee0b2 | 1163 | } |
a0d0e21e LW |
1164 | else if (type != OP_GREPSTART && type != OP_ENTERSUB) |
1165 | op->op_flags |= OPf_REF; | |
463ee0b2 LW |
1166 | return op; |
1167 | } | |
1168 | ||
3fe9a6f1 | 1169 | static bool |
1170 | scalar_mod_type(op, type) | |
1171 | OP *op; | |
1172 | I32 type; | |
1173 | { | |
1174 | switch (type) { | |
1175 | case OP_SASSIGN: | |
1176 | if (op->op_type == OP_RV2GV) | |
1177 | return FALSE; | |
1178 | /* FALL THROUGH */ | |
1179 | case OP_PREINC: | |
1180 | case OP_PREDEC: | |
1181 | case OP_POSTINC: | |
1182 | case OP_POSTDEC: | |
1183 | case OP_I_PREINC: | |
1184 | case OP_I_PREDEC: | |
1185 | case OP_I_POSTINC: | |
1186 | case OP_I_POSTDEC: | |
1187 | case OP_POW: | |
1188 | case OP_MULTIPLY: | |
1189 | case OP_DIVIDE: | |
1190 | case OP_MODULO: | |
1191 | case OP_REPEAT: | |
1192 | case OP_ADD: | |
1193 | case OP_SUBTRACT: | |
1194 | case OP_I_MULTIPLY: | |
1195 | case OP_I_DIVIDE: | |
1196 | case OP_I_MODULO: | |
1197 | case OP_I_ADD: | |
1198 | case OP_I_SUBTRACT: | |
1199 | case OP_LEFT_SHIFT: | |
1200 | case OP_RIGHT_SHIFT: | |
1201 | case OP_BIT_AND: | |
1202 | case OP_BIT_XOR: | |
1203 | case OP_BIT_OR: | |
1204 | case OP_CONCAT: | |
1205 | case OP_SUBST: | |
1206 | case OP_TRANS: | |
1207 | case OP_ANDASSIGN: /* may work later */ | |
1208 | case OP_ORASSIGN: /* may work later */ | |
1209 | return TRUE; | |
1210 | default: | |
1211 | return FALSE; | |
1212 | } | |
1213 | } | |
1214 | ||
463ee0b2 LW |
1215 | OP * |
1216 | refkids(op, type) | |
1217 | OP *op; | |
1218 | I32 type; | |
1219 | { | |
1220 | OP *kid; | |
1221 | if (op && op->op_flags & OPf_KIDS) { | |
1222 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
1223 | ref(kid, type); | |
1224 | } | |
1225 | return op; | |
1226 | } | |
1227 | ||
1228 | OP * | |
1229 | ref(op, type) | |
1230 | OP *op; | |
1231 | I32 type; | |
1232 | { | |
1233 | OP *kid; | |
463ee0b2 | 1234 | |
a0d0e21e | 1235 | if (!op || error_count) |
463ee0b2 LW |
1236 | return op; |
1237 | ||
1238 | switch (op->op_type) { | |
a0d0e21e LW |
1239 | case OP_ENTERSUB: |
1240 | if ((type == OP_DEFINED) && | |
1241 | !(op->op_flags & OPf_STACKED)) { | |
1242 | op->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
8990e307 | 1243 | op->op_ppaddr = ppaddr[OP_RV2CV]; |
85e6fe83 LW |
1244 | assert(cUNOP->op_first->op_type == OP_NULL); |
1245 | null(((LISTOP*)cUNOP->op_first)->op_first); /* disable pushmark */ | |
4633a7c4 | 1246 | op->op_flags |= OPf_SPECIAL; |
8990e307 LW |
1247 | } |
1248 | break; | |
1249 | ||
463ee0b2 LW |
1250 | case OP_COND_EXPR: |
1251 | for (kid = cUNOP->op_first->op_sibling; kid; kid = kid->op_sibling) | |
1252 | ref(kid, type); | |
1253 | break; | |
8990e307 | 1254 | case OP_RV2SV: |
8990e307 | 1255 | ref(cUNOP->op_first, op->op_type); |
4633a7c4 LW |
1256 | /* FALL THROUGH */ |
1257 | case OP_PADSV: | |
5f05dabc | 1258 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
1259 | op->op_private |= (type == OP_RV2AV ? OPpDEREF_AV | |
1260 | : type == OP_RV2HV ? OPpDEREF_HV | |
1261 | : OPpDEREF_SV); | |
a0d0e21e LW |
1262 | op->op_flags |= OPf_MOD; |
1263 | } | |
8990e307 LW |
1264 | break; |
1265 | ||
463ee0b2 LW |
1266 | case OP_RV2AV: |
1267 | case OP_RV2HV: | |
a0d0e21e | 1268 | op->op_flags |= OPf_REF; |
8990e307 | 1269 | /* FALL THROUGH */ |
463ee0b2 LW |
1270 | case OP_RV2GV: |
1271 | ref(cUNOP->op_first, op->op_type); | |
463ee0b2 | 1272 | break; |
8990e307 | 1273 | |
463ee0b2 LW |
1274 | case OP_PADAV: |
1275 | case OP_PADHV: | |
a0d0e21e | 1276 | op->op_flags |= OPf_REF; |
79072805 | 1277 | break; |
8990e307 LW |
1278 | |
1279 | case OP_SCALAR: | |
79072805 LW |
1280 | case OP_NULL: |
1281 | if (!(op->op_flags & OPf_KIDS)) | |
463ee0b2 | 1282 | break; |
8990e307 | 1283 | ref(cBINOP->op_first, type); |
79072805 LW |
1284 | break; |
1285 | case OP_AELEM: | |
1286 | case OP_HELEM: | |
8990e307 | 1287 | ref(cBINOP->op_first, op->op_type); |
5f05dabc | 1288 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
1289 | op->op_private |= (type == OP_RV2AV ? OPpDEREF_AV | |
1290 | : type == OP_RV2HV ? OPpDEREF_HV | |
1291 | : OPpDEREF_SV); | |
a0d0e21e | 1292 | op->op_flags |= OPf_MOD; |
8990e307 | 1293 | } |
79072805 LW |
1294 | break; |
1295 | ||
463ee0b2 | 1296 | case OP_SCOPE: |
79072805 LW |
1297 | case OP_LEAVE: |
1298 | case OP_ENTER: | |
8990e307 | 1299 | case OP_LIST: |
79072805 LW |
1300 | if (!(op->op_flags & OPf_KIDS)) |
1301 | break; | |
8990e307 | 1302 | ref(cLISTOP->op_last, type); |
79072805 | 1303 | break; |
a0d0e21e LW |
1304 | default: |
1305 | break; | |
79072805 | 1306 | } |
8990e307 LW |
1307 | return scalar(op); |
1308 | ||
79072805 LW |
1309 | } |
1310 | ||
1311 | OP * | |
93a17b20 LW |
1312 | my(op) |
1313 | OP *op; | |
1314 | { | |
1315 | OP *kid; | |
93a17b20 LW |
1316 | I32 type; |
1317 | ||
a0d0e21e | 1318 | if (!op || error_count) |
93a17b20 LW |
1319 | return op; |
1320 | ||
1321 | type = op->op_type; | |
1322 | if (type == OP_LIST) { | |
1323 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
1324 | my(kid); | |
1325 | } | |
1326 | else if (type != OP_PADSV && | |
1327 | type != OP_PADAV && | |
1328 | type != OP_PADHV && | |
1329 | type != OP_PUSHMARK) | |
1330 | { | |
46fc3d4c | 1331 | yyerror(form("Can't declare %s in my", op_desc[op->op_type])); |
93a17b20 LW |
1332 | return op; |
1333 | } | |
a0d0e21e LW |
1334 | op->op_flags |= OPf_MOD; |
1335 | op->op_private |= OPpLVAL_INTRO; | |
93a17b20 LW |
1336 | return op; |
1337 | } | |
1338 | ||
1339 | OP * | |
79072805 LW |
1340 | sawparens(o) |
1341 | OP *o; | |
1342 | { | |
1343 | if (o) | |
1344 | o->op_flags |= OPf_PARENS; | |
1345 | return o; | |
1346 | } | |
1347 | ||
1348 | OP * | |
1349 | bind_match(type, left, right) | |
1350 | I32 type; | |
1351 | OP *left; | |
1352 | OP *right; | |
1353 | { | |
1354 | OP *op; | |
1355 | ||
2ae324a7 | 1356 | if (dowarn && |
1357 | (left->op_type == OP_RV2AV || | |
1358 | left->op_type == OP_RV2HV || | |
1359 | left->op_type == OP_PADAV || | |
1360 | left->op_type == OP_PADHV)) { | |
1361 | char *desc = op_desc[(right->op_type == OP_SUBST || | |
1362 | right->op_type == OP_TRANS) | |
1363 | ? right->op_type : OP_MATCH]; | |
1364 | char *sample = ((left->op_type == OP_RV2AV || | |
1365 | left->op_type == OP_PADAV) | |
1366 | ? "@array" : "%hash"); | |
1367 | warn("Applying %s to %s will act on scalar(%s)", desc, sample, sample); | |
1368 | } | |
1369 | ||
79072805 LW |
1370 | if (right->op_type == OP_MATCH || |
1371 | right->op_type == OP_SUBST || | |
1372 | right->op_type == OP_TRANS) { | |
1373 | right->op_flags |= OPf_STACKED; | |
1374 | if (right->op_type != OP_MATCH) | |
463ee0b2 | 1375 | left = mod(left, right->op_type); |
79072805 | 1376 | if (right->op_type == OP_TRANS) |
a0d0e21e | 1377 | op = newBINOP(OP_NULL, OPf_STACKED, scalar(left), right); |
79072805 LW |
1378 | else |
1379 | op = prepend_elem(right->op_type, scalar(left), right); | |
1380 | if (type == OP_NOT) | |
1381 | return newUNOP(OP_NOT, 0, scalar(op)); | |
1382 | return op; | |
1383 | } | |
1384 | else | |
1385 | return bind_match(type, left, | |
1386 | pmruntime(newPMOP(OP_MATCH, 0), right, Nullop)); | |
1387 | } | |
1388 | ||
1389 | OP * | |
1390 | invert(op) | |
1391 | OP *op; | |
1392 | { | |
1393 | if (!op) | |
1394 | return op; | |
1395 | /* XXX need to optimize away NOT NOT here? Or do we let optimizer do it? */ | |
1396 | return newUNOP(OP_NOT, OPf_SPECIAL, scalar(op)); | |
1397 | } | |
1398 | ||
1399 | OP * | |
1400 | scope(o) | |
1401 | OP *o; | |
1402 | { | |
1403 | if (o) { | |
4633a7c4 | 1404 | if (o->op_flags & OPf_PARENS || perldb || tainting) { |
463ee0b2 LW |
1405 | o = prepend_elem(OP_LINESEQ, newOP(OP_ENTER, 0), o); |
1406 | o->op_type = OP_LEAVE; | |
1407 | o->op_ppaddr = ppaddr[OP_LEAVE]; | |
1408 | } | |
1409 | else { | |
1410 | if (o->op_type == OP_LINESEQ) { | |
1411 | OP *kid; | |
1412 | o->op_type = OP_SCOPE; | |
1413 | o->op_ppaddr = ppaddr[OP_SCOPE]; | |
1414 | kid = ((LISTOP*)o)->op_first; | |
748a9306 LW |
1415 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE){ |
1416 | SvREFCNT_dec(((COP*)kid)->cop_filegv); | |
8990e307 | 1417 | null(kid); |
748a9306 | 1418 | } |
463ee0b2 LW |
1419 | } |
1420 | else | |
748a9306 | 1421 | o = newLISTOP(OP_SCOPE, 0, o, Nullop); |
463ee0b2 | 1422 | } |
79072805 LW |
1423 | } |
1424 | return o; | |
1425 | } | |
1426 | ||
a0d0e21e | 1427 | int |
55497cff | 1428 | block_start(full) |
1429 | int full; | |
79072805 | 1430 | { |
a0d0e21e | 1431 | int retval = savestack_ix; |
55497cff | 1432 | SAVEI32(comppad_name_floor); |
1433 | if (full) { | |
1434 | if ((comppad_name_fill = AvFILL(comppad_name)) > 0) | |
1435 | comppad_name_floor = comppad_name_fill; | |
1436 | else | |
1437 | comppad_name_floor = 0; | |
1438 | } | |
1439 | SAVEI32(min_intro_pending); | |
1440 | SAVEI32(max_intro_pending); | |
a0d0e21e | 1441 | min_intro_pending = 0; |
55497cff | 1442 | SAVEI32(comppad_name_fill); |
1443 | SAVEI32(padix_floor); | |
a0d0e21e LW |
1444 | padix_floor = padix; |
1445 | pad_reset_pending = FALSE; | |
55497cff | 1446 | SAVEI32(hints); |
a0d0e21e LW |
1447 | hints &= ~HINT_BLOCK_SCOPE; |
1448 | return retval; | |
1449 | } | |
1450 | ||
1451 | OP* | |
36477c24 | 1452 | block_end(floor, seq) |
1453 | I32 floor; | |
a0d0e21e LW |
1454 | OP* seq; |
1455 | { | |
1456 | int needblockscope = hints & HINT_BLOCK_SCOPE; | |
1457 | OP* retval = scalarseq(seq); | |
a0d0e21e LW |
1458 | LEAVE_SCOPE(floor); |
1459 | pad_reset_pending = FALSE; | |
1460 | if (needblockscope) | |
1461 | hints |= HINT_BLOCK_SCOPE; /* propagate out */ | |
1462 | pad_leavemy(comppad_name_fill); | |
bbce6d69 | 1463 | cop_seqmax++; |
a0d0e21e LW |
1464 | return retval; |
1465 | } | |
1466 | ||
1467 | void | |
1468 | newPROG(op) | |
1469 | OP *op; | |
1470 | { | |
1471 | if (in_eval) { | |
b1cb66bf | 1472 | eval_root = newUNOP(OP_LEAVEEVAL, ((in_eval & 4) ? OPf_SPECIAL : 0), op); |
a0d0e21e LW |
1473 | eval_start = linklist(eval_root); |
1474 | eval_root->op_next = 0; | |
1475 | peep(eval_start); | |
1476 | } | |
1477 | else { | |
4fdae800 | 1478 | if (!op) |
a0d0e21e | 1479 | return; |
a0d0e21e LW |
1480 | main_root = scope(sawparens(scalarvoid(op))); |
1481 | curcop = &compiling; | |
1482 | main_start = LINKLIST(main_root); | |
1483 | main_root->op_next = 0; | |
1484 | peep(main_start); | |
748a9306 | 1485 | compcv = 0; |
3841441e | 1486 | |
4fdae800 | 1487 | /* Register with debugger */ |
3841441e CS |
1488 | if (perldb) { |
1489 | CV *cv = perl_get_cv("DB::postponed", FALSE); | |
3841441e CS |
1490 | if (cv) { |
1491 | dSP; | |
1492 | PUSHMARK(sp); | |
1493 | XPUSHs((SV*)compiling.cop_filegv); | |
1494 | PUTBACK; | |
1495 | perl_call_sv((SV*)cv, G_DISCARD); | |
1496 | } | |
1497 | } | |
79072805 | 1498 | } |
79072805 LW |
1499 | } |
1500 | ||
1501 | OP * | |
93a17b20 | 1502 | localize(o, lex) |
79072805 | 1503 | OP *o; |
93a17b20 | 1504 | I32 lex; |
79072805 LW |
1505 | { |
1506 | if (o->op_flags & OPf_PARENS) | |
1507 | list(o); | |
8990e307 | 1508 | else { |
79072805 | 1509 | scalar(o); |
8990e307 LW |
1510 | if (dowarn && bufptr > oldbufptr && bufptr[-1] == ',') { |
1511 | char *s; | |
1512 | for (s = bufptr; *s && (isALNUM(*s) || strchr("@$%, ",*s)); s++) ; | |
a0d0e21e | 1513 | if (*s == ';' || *s == '=') |
8990e307 LW |
1514 | warn("Parens missing around \"%s\" list", lex ? "my" : "local"); |
1515 | } | |
1516 | } | |
93a17b20 LW |
1517 | in_my = FALSE; |
1518 | if (lex) | |
1519 | return my(o); | |
1520 | else | |
463ee0b2 | 1521 | return mod(o, OP_NULL); /* a bit kludgey */ |
79072805 LW |
1522 | } |
1523 | ||
1524 | OP * | |
1525 | jmaybe(o) | |
1526 | OP *o; | |
1527 | { | |
1528 | if (o->op_type == OP_LIST) { | |
1529 | o = convert(OP_JOIN, 0, | |
1530 | prepend_elem(OP_LIST, | |
85e6fe83 | 1531 | newSVREF(newGVOP(OP_GV, 0, gv_fetchpv(";", TRUE, SVt_PV))), |
79072805 LW |
1532 | o)); |
1533 | } | |
1534 | return o; | |
1535 | } | |
1536 | ||
1537 | OP * | |
1538 | fold_constants(o) | |
1539 | register OP *o; | |
1540 | { | |
1541 | register OP *curop; | |
1542 | I32 type = o->op_type; | |
748a9306 | 1543 | SV *sv; |
79072805 LW |
1544 | |
1545 | if (opargs[type] & OA_RETSCALAR) | |
1546 | scalar(o); | |
1547 | if (opargs[type] & OA_TARGET) | |
ed6116ce | 1548 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 | 1549 | |
85e6fe83 | 1550 | if ((opargs[type] & OA_OTHERINT) && (hints & HINT_INTEGER)) |
a0d0e21e | 1551 | o->op_ppaddr = ppaddr[type = ++(o->op_type)]; |
85e6fe83 | 1552 | |
79072805 LW |
1553 | if (!(opargs[type] & OA_FOLDCONST)) |
1554 | goto nope; | |
1555 | ||
de939608 CS |
1556 | switch (type) { |
1557 | case OP_SPRINTF: | |
1558 | case OP_UCFIRST: | |
1559 | case OP_LCFIRST: | |
1560 | case OP_UC: | |
1561 | case OP_LC: | |
1562 | if (o->op_private & OPpLOCALE) | |
1563 | goto nope; | |
1564 | } | |
1565 | ||
a0d0e21e LW |
1566 | if (error_count) |
1567 | goto nope; /* Don't try to run w/ errors */ | |
1568 | ||
79072805 | 1569 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
93a17b20 LW |
1570 | if (curop->op_type != OP_CONST && |
1571 | curop->op_type != OP_LIST && | |
1572 | curop->op_type != OP_SCALAR && | |
a0d0e21e | 1573 | curop->op_type != OP_NULL && |
93a17b20 | 1574 | curop->op_type != OP_PUSHMARK) { |
79072805 LW |
1575 | goto nope; |
1576 | } | |
1577 | } | |
1578 | ||
1579 | curop = LINKLIST(o); | |
1580 | o->op_next = 0; | |
1581 | op = curop; | |
8da795c6 | 1582 | runops(); |
748a9306 LW |
1583 | sv = *(stack_sp--); |
1584 | if (o->op_targ && sv == PAD_SV(o->op_targ)) /* grab pad temp? */ | |
79072805 | 1585 | pad_swipe(o->op_targ); |
748a9306 LW |
1586 | else if (SvTEMP(sv)) { /* grab mortal temp? */ |
1587 | (void)SvREFCNT_inc(sv); | |
1588 | SvTEMP_off(sv); | |
85e6fe83 | 1589 | } |
79072805 LW |
1590 | op_free(o); |
1591 | if (type == OP_RV2GV) | |
b1cb66bf | 1592 | return newGVOP(OP_GV, 0, (GV*)sv); |
748a9306 LW |
1593 | else { |
1594 | if ((SvFLAGS(sv) & (SVf_IOK|SVf_NOK|SVf_POK)) == SVf_NOK) { | |
1595 | IV iv = SvIV(sv); | |
1596 | if ((double)iv == SvNV(sv)) { /* can we smush double to int */ | |
1597 | SvREFCNT_dec(sv); | |
1598 | sv = newSViv(iv); | |
1599 | } | |
b1cb66bf | 1600 | else |
1601 | SvIOK_off(sv); /* undo SvIV() damage */ | |
748a9306 LW |
1602 | } |
1603 | return newSVOP(OP_CONST, 0, sv); | |
1604 | } | |
79072805 LW |
1605 | |
1606 | nope: | |
1607 | if (!(opargs[type] & OA_OTHERINT)) | |
1608 | return o; | |
79072805 | 1609 | |
85e6fe83 | 1610 | if (!(hints & HINT_INTEGER)) { |
a0d0e21e | 1611 | if (type == OP_DIVIDE || !(o->op_flags & OPf_KIDS)) |
85e6fe83 LW |
1612 | return o; |
1613 | ||
1614 | for (curop = ((UNOP*)o)->op_first; curop; curop = curop->op_sibling) { | |
1615 | if (curop->op_type == OP_CONST) { | |
b1cb66bf | 1616 | if (SvIOK(((SVOP*)curop)->op_sv)) |
85e6fe83 LW |
1617 | continue; |
1618 | return o; | |
1619 | } | |
1620 | if (opargs[curop->op_type] & OA_RETINTEGER) | |
79072805 LW |
1621 | continue; |
1622 | return o; | |
1623 | } | |
a0d0e21e | 1624 | o->op_ppaddr = ppaddr[++(o->op_type)]; |
79072805 LW |
1625 | } |
1626 | ||
79072805 LW |
1627 | return o; |
1628 | } | |
1629 | ||
1630 | OP * | |
1631 | gen_constant_list(o) | |
1632 | register OP *o; | |
1633 | { | |
1634 | register OP *curop; | |
79072805 | 1635 | I32 oldtmps_floor = tmps_floor; |
79072805 | 1636 | |
a0d0e21e LW |
1637 | list(o); |
1638 | if (error_count) | |
1639 | return o; /* Don't attempt to run with errors */ | |
1640 | ||
1641 | op = curop = LINKLIST(o); | |
1642 | o->op_next = 0; | |
1643 | pp_pushmark(); | |
8da795c6 | 1644 | runops(); |
a0d0e21e LW |
1645 | op = curop; |
1646 | pp_anonlist(); | |
79072805 | 1647 | tmps_floor = oldtmps_floor; |
79072805 LW |
1648 | |
1649 | o->op_type = OP_RV2AV; | |
1650 | o->op_ppaddr = ppaddr[OP_RV2AV]; | |
79072805 | 1651 | curop = ((UNOP*)o)->op_first; |
a0d0e21e | 1652 | ((UNOP*)o)->op_first = newSVOP(OP_CONST, 0, SvREFCNT_inc(*stack_sp--)); |
79072805 | 1653 | op_free(curop); |
79072805 LW |
1654 | linklist(o); |
1655 | return list(o); | |
1656 | } | |
1657 | ||
1658 | OP * | |
1659 | convert(type, flags, op) | |
1660 | I32 type; | |
1661 | I32 flags; | |
1662 | OP* op; | |
1663 | { | |
1664 | OP *kid; | |
a0d0e21e | 1665 | OP *last = 0; |
79072805 | 1666 | |
79072805 LW |
1667 | if (!op || op->op_type != OP_LIST) |
1668 | op = newLISTOP(OP_LIST, 0, op, Nullop); | |
748a9306 | 1669 | else |
54310121 | 1670 | op->op_flags &= ~OPf_WANT; |
79072805 | 1671 | |
8990e307 LW |
1672 | if (!(opargs[type] & OA_MARK)) |
1673 | null(cLISTOP->op_first); | |
1674 | ||
79072805 LW |
1675 | op->op_type = type; |
1676 | op->op_ppaddr = ppaddr[type]; | |
1677 | op->op_flags |= flags; | |
1678 | ||
e50aee73 | 1679 | op = CHECKOP(type, op); |
79072805 LW |
1680 | if (op->op_type != type) |
1681 | return op; | |
1682 | ||
1683 | if (cLISTOP->op_children < 7) { | |
1684 | /* XXX do we really need to do this if we're done appending?? */ | |
1685 | for (kid = cLISTOP->op_first; kid; kid = kid->op_sibling) | |
1686 | last = kid; | |
1687 | cLISTOP->op_last = last; /* in case check substituted last arg */ | |
1688 | } | |
1689 | ||
1690 | return fold_constants(op); | |
1691 | } | |
1692 | ||
1693 | /* List constructors */ | |
1694 | ||
1695 | OP * | |
1696 | append_elem(type, first, last) | |
1697 | I32 type; | |
1698 | OP* first; | |
1699 | OP* last; | |
1700 | { | |
1701 | if (!first) | |
1702 | return last; | |
8990e307 LW |
1703 | |
1704 | if (!last) | |
79072805 | 1705 | return first; |
8990e307 | 1706 | |
a0d0e21e LW |
1707 | if (first->op_type != type || type==OP_LIST && first->op_flags & OPf_PARENS) |
1708 | return newLISTOP(type, 0, first, last); | |
79072805 | 1709 | |
a0d0e21e LW |
1710 | if (first->op_flags & OPf_KIDS) |
1711 | ((LISTOP*)first)->op_last->op_sibling = last; | |
1712 | else { | |
1713 | first->op_flags |= OPf_KIDS; | |
1714 | ((LISTOP*)first)->op_first = last; | |
1715 | } | |
1716 | ((LISTOP*)first)->op_last = last; | |
1717 | ((LISTOP*)first)->op_children++; | |
1718 | return first; | |
79072805 LW |
1719 | } |
1720 | ||
1721 | OP * | |
1722 | append_list(type, first, last) | |
1723 | I32 type; | |
1724 | LISTOP* first; | |
1725 | LISTOP* last; | |
1726 | { | |
1727 | if (!first) | |
1728 | return (OP*)last; | |
8990e307 LW |
1729 | |
1730 | if (!last) | |
79072805 | 1731 | return (OP*)first; |
8990e307 LW |
1732 | |
1733 | if (first->op_type != type) | |
79072805 | 1734 | return prepend_elem(type, (OP*)first, (OP*)last); |
8990e307 LW |
1735 | |
1736 | if (last->op_type != type) | |
79072805 LW |
1737 | return append_elem(type, (OP*)first, (OP*)last); |
1738 | ||
1739 | first->op_last->op_sibling = last->op_first; | |
1740 | first->op_last = last->op_last; | |
1741 | first->op_children += last->op_children; | |
1742 | if (first->op_children) | |
1743 | last->op_flags |= OPf_KIDS; | |
1744 | ||
1745 | Safefree(last); | |
1746 | return (OP*)first; | |
1747 | } | |
1748 | ||
1749 | OP * | |
1750 | prepend_elem(type, first, last) | |
1751 | I32 type; | |
1752 | OP* first; | |
1753 | OP* last; | |
1754 | { | |
1755 | if (!first) | |
1756 | return last; | |
8990e307 LW |
1757 | |
1758 | if (!last) | |
79072805 | 1759 | return first; |
8990e307 LW |
1760 | |
1761 | if (last->op_type == type) { | |
1762 | if (type == OP_LIST) { /* already a PUSHMARK there */ | |
1763 | first->op_sibling = ((LISTOP*)last)->op_first->op_sibling; | |
1764 | ((LISTOP*)last)->op_first->op_sibling = first; | |
1765 | } | |
1766 | else { | |
1767 | if (!(last->op_flags & OPf_KIDS)) { | |
1768 | ((LISTOP*)last)->op_last = first; | |
1769 | last->op_flags |= OPf_KIDS; | |
1770 | } | |
1771 | first->op_sibling = ((LISTOP*)last)->op_first; | |
1772 | ((LISTOP*)last)->op_first = first; | |
79072805 | 1773 | } |
79072805 LW |
1774 | ((LISTOP*)last)->op_children++; |
1775 | return last; | |
1776 | } | |
1777 | ||
1778 | return newLISTOP(type, 0, first, last); | |
1779 | } | |
1780 | ||
1781 | /* Constructors */ | |
1782 | ||
1783 | OP * | |
1784 | newNULLLIST() | |
1785 | { | |
8990e307 LW |
1786 | return newOP(OP_STUB, 0); |
1787 | } | |
1788 | ||
1789 | OP * | |
1790 | force_list(op) | |
1791 | OP* op; | |
1792 | { | |
1793 | if (!op || op->op_type != OP_LIST) | |
1794 | op = newLISTOP(OP_LIST, 0, op, Nullop); | |
1795 | null(op); | |
1796 | return op; | |
79072805 LW |
1797 | } |
1798 | ||
1799 | OP * | |
1800 | newLISTOP(type, flags, first, last) | |
1801 | I32 type; | |
1802 | I32 flags; | |
1803 | OP* first; | |
1804 | OP* last; | |
1805 | { | |
1806 | LISTOP *listop; | |
1807 | ||
1808 | Newz(1101, listop, 1, LISTOP); | |
1809 | ||
1810 | listop->op_type = type; | |
1811 | listop->op_ppaddr = ppaddr[type]; | |
1812 | listop->op_children = (first != 0) + (last != 0); | |
1813 | listop->op_flags = flags; | |
79072805 LW |
1814 | |
1815 | if (!last && first) | |
1816 | last = first; | |
1817 | else if (!first && last) | |
1818 | first = last; | |
8990e307 LW |
1819 | else if (first) |
1820 | first->op_sibling = last; | |
79072805 LW |
1821 | listop->op_first = first; |
1822 | listop->op_last = last; | |
8990e307 LW |
1823 | if (type == OP_LIST) { |
1824 | OP* pushop; | |
1825 | pushop = newOP(OP_PUSHMARK, 0); | |
1826 | pushop->op_sibling = first; | |
1827 | listop->op_first = pushop; | |
1828 | listop->op_flags |= OPf_KIDS; | |
1829 | if (!last) | |
1830 | listop->op_last = pushop; | |
1831 | } | |
1832 | else if (listop->op_children) | |
1833 | listop->op_flags |= OPf_KIDS; | |
79072805 LW |
1834 | |
1835 | return (OP*)listop; | |
1836 | } | |
1837 | ||
1838 | OP * | |
1839 | newOP(type, flags) | |
1840 | I32 type; | |
1841 | I32 flags; | |
1842 | { | |
1843 | OP *op; | |
1844 | Newz(1101, op, 1, OP); | |
1845 | op->op_type = type; | |
1846 | op->op_ppaddr = ppaddr[type]; | |
1847 | op->op_flags = flags; | |
1848 | ||
1849 | op->op_next = op; | |
c07a80fd | 1850 | op->op_private = 0 + (flags >> 8); |
79072805 LW |
1851 | if (opargs[type] & OA_RETSCALAR) |
1852 | scalar(op); | |
1853 | if (opargs[type] & OA_TARGET) | |
ed6116ce | 1854 | op->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 1855 | return CHECKOP(type, op); |
79072805 LW |
1856 | } |
1857 | ||
1858 | OP * | |
1859 | newUNOP(type, flags, first) | |
1860 | I32 type; | |
1861 | I32 flags; | |
1862 | OP* first; | |
1863 | { | |
1864 | UNOP *unop; | |
1865 | ||
93a17b20 LW |
1866 | if (!first) |
1867 | first = newOP(OP_STUB, 0); | |
8990e307 LW |
1868 | if (opargs[type] & OA_MARK) |
1869 | first = force_list(first); | |
93a17b20 | 1870 | |
79072805 LW |
1871 | Newz(1101, unop, 1, UNOP); |
1872 | unop->op_type = type; | |
1873 | unop->op_ppaddr = ppaddr[type]; | |
1874 | unop->op_first = first; | |
1875 | unop->op_flags = flags | OPf_KIDS; | |
c07a80fd | 1876 | unop->op_private = 1 | (flags >> 8); |
79072805 | 1877 | |
e50aee73 | 1878 | unop = (UNOP*) CHECKOP(type, unop); |
79072805 LW |
1879 | if (unop->op_next) |
1880 | return (OP*)unop; | |
1881 | ||
a0d0e21e | 1882 | return fold_constants((OP *) unop); |
79072805 LW |
1883 | } |
1884 | ||
1885 | OP * | |
1886 | newBINOP(type, flags, first, last) | |
1887 | I32 type; | |
1888 | I32 flags; | |
1889 | OP* first; | |
1890 | OP* last; | |
1891 | { | |
1892 | BINOP *binop; | |
1893 | Newz(1101, binop, 1, BINOP); | |
1894 | ||
1895 | if (!first) | |
1896 | first = newOP(OP_NULL, 0); | |
1897 | ||
1898 | binop->op_type = type; | |
1899 | binop->op_ppaddr = ppaddr[type]; | |
1900 | binop->op_first = first; | |
1901 | binop->op_flags = flags | OPf_KIDS; | |
1902 | if (!last) { | |
1903 | last = first; | |
c07a80fd | 1904 | binop->op_private = 1 | (flags >> 8); |
79072805 LW |
1905 | } |
1906 | else { | |
c07a80fd | 1907 | binop->op_private = 2 | (flags >> 8); |
79072805 LW |
1908 | first->op_sibling = last; |
1909 | } | |
1910 | ||
e50aee73 | 1911 | binop = (BINOP*)CHECKOP(type, binop); |
79072805 LW |
1912 | if (binop->op_next) |
1913 | return (OP*)binop; | |
1914 | ||
1915 | binop->op_last = last = binop->op_first->op_sibling; | |
1916 | ||
a0d0e21e | 1917 | return fold_constants((OP *)binop); |
79072805 LW |
1918 | } |
1919 | ||
1920 | OP * | |
1921 | pmtrans(op, expr, repl) | |
1922 | OP *op; | |
1923 | OP *expr; | |
1924 | OP *repl; | |
1925 | { | |
79072805 LW |
1926 | SV *tstr = ((SVOP*)expr)->op_sv; |
1927 | SV *rstr = ((SVOP*)repl)->op_sv; | |
463ee0b2 LW |
1928 | STRLEN tlen; |
1929 | STRLEN rlen; | |
ec49126f | 1930 | register U8 *t = (U8*)SvPV(tstr, tlen); |
1931 | register U8 *r = (U8*)SvPV(rstr, rlen); | |
79072805 LW |
1932 | register I32 i; |
1933 | register I32 j; | |
79072805 LW |
1934 | I32 delete; |
1935 | I32 complement; | |
1936 | register short *tbl; | |
1937 | ||
1938 | tbl = (short*)cPVOP->op_pv; | |
1939 | complement = op->op_private & OPpTRANS_COMPLEMENT; | |
1940 | delete = op->op_private & OPpTRANS_DELETE; | |
748a9306 | 1941 | /* squash = op->op_private & OPpTRANS_SQUASH; */ |
79072805 LW |
1942 | |
1943 | if (complement) { | |
1944 | Zero(tbl, 256, short); | |
1945 | for (i = 0; i < tlen; i++) | |
ec49126f | 1946 | tbl[t[i]] = -1; |
79072805 LW |
1947 | for (i = 0, j = 0; i < 256; i++) { |
1948 | if (!tbl[i]) { | |
1949 | if (j >= rlen) { | |
1950 | if (delete) | |
1951 | tbl[i] = -2; | |
1952 | else if (rlen) | |
ec49126f | 1953 | tbl[i] = r[j-1]; |
79072805 LW |
1954 | else |
1955 | tbl[i] = i; | |
1956 | } | |
1957 | else | |
ec49126f | 1958 | tbl[i] = r[j++]; |
79072805 LW |
1959 | } |
1960 | } | |
1961 | } | |
1962 | else { | |
1963 | if (!rlen && !delete) { | |
1964 | r = t; rlen = tlen; | |
1965 | } | |
1966 | for (i = 0; i < 256; i++) | |
1967 | tbl[i] = -1; | |
1968 | for (i = 0, j = 0; i < tlen; i++,j++) { | |
1969 | if (j >= rlen) { | |
1970 | if (delete) { | |
ec49126f | 1971 | if (tbl[t[i]] == -1) |
1972 | tbl[t[i]] = -2; | |
79072805 LW |
1973 | continue; |
1974 | } | |
1975 | --j; | |
1976 | } | |
ec49126f | 1977 | if (tbl[t[i]] == -1) |
1978 | tbl[t[i]] = r[j]; | |
79072805 LW |
1979 | } |
1980 | } | |
1981 | op_free(expr); | |
1982 | op_free(repl); | |
1983 | ||
1984 | return op; | |
1985 | } | |
1986 | ||
1987 | OP * | |
1988 | newPMOP(type, flags) | |
1989 | I32 type; | |
1990 | I32 flags; | |
1991 | { | |
1992 | PMOP *pmop; | |
1993 | ||
1994 | Newz(1101, pmop, 1, PMOP); | |
1995 | pmop->op_type = type; | |
1996 | pmop->op_ppaddr = ppaddr[type]; | |
1997 | pmop->op_flags = flags; | |
c07a80fd | 1998 | pmop->op_private = 0 | (flags >> 8); |
79072805 | 1999 | |
36477c24 | 2000 | if (hints & HINT_LOCALE) |
2001 | pmop->op_pmpermflags = (pmop->op_pmflags |= PMf_LOCALE); | |
2002 | ||
79072805 | 2003 | /* link into pm list */ |
a0d0e21e | 2004 | if (type != OP_TRANS && curstash) { |
79072805 LW |
2005 | pmop->op_pmnext = HvPMROOT(curstash); |
2006 | HvPMROOT(curstash) = pmop; | |
2007 | } | |
2008 | ||
2009 | return (OP*)pmop; | |
2010 | } | |
2011 | ||
2012 | OP * | |
2013 | pmruntime(op, expr, repl) | |
2014 | OP *op; | |
2015 | OP *expr; | |
2016 | OP *repl; | |
2017 | { | |
2018 | PMOP *pm; | |
2019 | LOGOP *rcop; | |
2020 | ||
2021 | if (op->op_type == OP_TRANS) | |
2022 | return pmtrans(op, expr, repl); | |
2023 | ||
3e3baf6d | 2024 | hints |= HINT_BLOCK_SCOPE; |
79072805 LW |
2025 | pm = (PMOP*)op; |
2026 | ||
2027 | if (expr->op_type == OP_CONST) { | |
463ee0b2 | 2028 | STRLEN plen; |
79072805 | 2029 | SV *pat = ((SVOP*)expr)->op_sv; |
463ee0b2 | 2030 | char *p = SvPV(pat, plen); |
79072805 | 2031 | if ((op->op_flags & OPf_SPECIAL) && strEQ(p, " ")) { |
93a17b20 | 2032 | sv_setpvn(pat, "\\s+", 3); |
463ee0b2 | 2033 | p = SvPV(pat, plen); |
79072805 LW |
2034 | pm->op_pmflags |= PMf_SKIPWHITE; |
2035 | } | |
e50aee73 | 2036 | pm->op_pmregexp = pregcomp(p, p + plen, pm); |
85e6fe83 LW |
2037 | if (strEQ("\\s+", pm->op_pmregexp->precomp)) |
2038 | pm->op_pmflags |= PMf_WHITE; | |
79072805 LW |
2039 | hoistmust(pm); |
2040 | op_free(expr); | |
2041 | } | |
2042 | else { | |
463ee0b2 LW |
2043 | if (pm->op_pmflags & PMf_KEEP) |
2044 | expr = newUNOP(OP_REGCMAYBE,0,expr); | |
2045 | ||
79072805 LW |
2046 | Newz(1101, rcop, 1, LOGOP); |
2047 | rcop->op_type = OP_REGCOMP; | |
2048 | rcop->op_ppaddr = ppaddr[OP_REGCOMP]; | |
2049 | rcop->op_first = scalar(expr); | |
2050 | rcop->op_flags |= OPf_KIDS; | |
2051 | rcop->op_private = 1; | |
2052 | rcop->op_other = op; | |
2053 | ||
2054 | /* establish postfix order */ | |
463ee0b2 LW |
2055 | if (pm->op_pmflags & PMf_KEEP) { |
2056 | LINKLIST(expr); | |
2057 | rcop->op_next = expr; | |
2058 | ((UNOP*)expr)->op_first->op_next = (OP*)rcop; | |
2059 | } | |
2060 | else { | |
2061 | rcop->op_next = LINKLIST(expr); | |
2062 | expr->op_next = (OP*)rcop; | |
2063 | } | |
79072805 | 2064 | |
463ee0b2 | 2065 | prepend_elem(op->op_type, scalar((OP*)rcop), op); |
79072805 LW |
2066 | } |
2067 | ||
2068 | if (repl) { | |
748a9306 LW |
2069 | OP *curop; |
2070 | if (pm->op_pmflags & PMf_EVAL) | |
2071 | curop = 0; | |
2072 | else if (repl->op_type == OP_CONST) | |
2073 | curop = repl; | |
79072805 | 2074 | else { |
79072805 LW |
2075 | OP *lastop = 0; |
2076 | for (curop = LINKLIST(repl); curop!=repl; curop = LINKLIST(curop)) { | |
2077 | if (opargs[curop->op_type] & OA_DANGEROUS) { | |
2078 | if (curop->op_type == OP_GV) { | |
2079 | GV *gv = ((GVOP*)curop)->op_gv; | |
93a17b20 | 2080 | if (strchr("&`'123456789+", *GvENAME(gv))) |
79072805 LW |
2081 | break; |
2082 | } | |
2083 | else if (curop->op_type == OP_RV2CV) | |
2084 | break; | |
2085 | else if (curop->op_type == OP_RV2SV || | |
2086 | curop->op_type == OP_RV2AV || | |
2087 | curop->op_type == OP_RV2HV || | |
2088 | curop->op_type == OP_RV2GV) { | |
2089 | if (lastop && lastop->op_type != OP_GV) /*funny deref?*/ | |
2090 | break; | |
2091 | } | |
748a9306 LW |
2092 | else if (curop->op_type == OP_PADSV || |
2093 | curop->op_type == OP_PADAV || | |
2094 | curop->op_type == OP_PADHV || | |
2095 | curop->op_type == OP_PADANY) { | |
2096 | /* is okay */ | |
2097 | } | |
79072805 LW |
2098 | else |
2099 | break; | |
2100 | } | |
2101 | lastop = curop; | |
2102 | } | |
748a9306 LW |
2103 | } |
2104 | if (curop == repl) { | |
2105 | pm->op_pmflags |= PMf_CONST; /* const for long enough */ | |
4633a7c4 | 2106 | pm->op_pmpermflags |= PMf_CONST; /* const for long enough */ |
748a9306 LW |
2107 | prepend_elem(op->op_type, scalar(repl), op); |
2108 | } | |
2109 | else { | |
2110 | Newz(1101, rcop, 1, LOGOP); | |
2111 | rcop->op_type = OP_SUBSTCONT; | |
2112 | rcop->op_ppaddr = ppaddr[OP_SUBSTCONT]; | |
2113 | rcop->op_first = scalar(repl); | |
2114 | rcop->op_flags |= OPf_KIDS; | |
2115 | rcop->op_private = 1; | |
2116 | rcop->op_other = op; | |
2117 | ||
2118 | /* establish postfix order */ | |
2119 | rcop->op_next = LINKLIST(repl); | |
2120 | repl->op_next = (OP*)rcop; | |
2121 | ||
2122 | pm->op_pmreplroot = scalar((OP*)rcop); | |
2123 | pm->op_pmreplstart = LINKLIST(rcop); | |
2124 | rcop->op_next = 0; | |
79072805 LW |
2125 | } |
2126 | } | |
2127 | ||
2128 | return (OP*)pm; | |
2129 | } | |
2130 | ||
2131 | OP * | |
2132 | newSVOP(type, flags, sv) | |
2133 | I32 type; | |
2134 | I32 flags; | |
2135 | SV *sv; | |
2136 | { | |
2137 | SVOP *svop; | |
2138 | Newz(1101, svop, 1, SVOP); | |
2139 | svop->op_type = type; | |
2140 | svop->op_ppaddr = ppaddr[type]; | |
2141 | svop->op_sv = sv; | |
2142 | svop->op_next = (OP*)svop; | |
2143 | svop->op_flags = flags; | |
2144 | if (opargs[type] & OA_RETSCALAR) | |
463ee0b2 | 2145 | scalar((OP*)svop); |
79072805 | 2146 | if (opargs[type] & OA_TARGET) |
ed6116ce | 2147 | svop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2148 | return CHECKOP(type, svop); |
79072805 LW |
2149 | } |
2150 | ||
2151 | OP * | |
2152 | newGVOP(type, flags, gv) | |
2153 | I32 type; | |
2154 | I32 flags; | |
2155 | GV *gv; | |
2156 | { | |
2157 | GVOP *gvop; | |
2158 | Newz(1101, gvop, 1, GVOP); | |
2159 | gvop->op_type = type; | |
2160 | gvop->op_ppaddr = ppaddr[type]; | |
8990e307 | 2161 | gvop->op_gv = (GV*)SvREFCNT_inc(gv); |
79072805 LW |
2162 | gvop->op_next = (OP*)gvop; |
2163 | gvop->op_flags = flags; | |
2164 | if (opargs[type] & OA_RETSCALAR) | |
463ee0b2 | 2165 | scalar((OP*)gvop); |
79072805 | 2166 | if (opargs[type] & OA_TARGET) |
ed6116ce | 2167 | gvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2168 | return CHECKOP(type, gvop); |
79072805 LW |
2169 | } |
2170 | ||
2171 | OP * | |
2172 | newPVOP(type, flags, pv) | |
2173 | I32 type; | |
2174 | I32 flags; | |
2175 | char *pv; | |
2176 | { | |
2177 | PVOP *pvop; | |
2178 | Newz(1101, pvop, 1, PVOP); | |
2179 | pvop->op_type = type; | |
2180 | pvop->op_ppaddr = ppaddr[type]; | |
2181 | pvop->op_pv = pv; | |
2182 | pvop->op_next = (OP*)pvop; | |
2183 | pvop->op_flags = flags; | |
2184 | if (opargs[type] & OA_RETSCALAR) | |
463ee0b2 | 2185 | scalar((OP*)pvop); |
79072805 | 2186 | if (opargs[type] & OA_TARGET) |
ed6116ce | 2187 | pvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2188 | return CHECKOP(type, pvop); |
79072805 LW |
2189 | } |
2190 | ||
79072805 LW |
2191 | void |
2192 | package(op) | |
2193 | OP *op; | |
2194 | { | |
93a17b20 | 2195 | SV *sv; |
79072805 LW |
2196 | |
2197 | save_hptr(&curstash); | |
2198 | save_item(curstname); | |
93a17b20 | 2199 | if (op) { |
463ee0b2 LW |
2200 | STRLEN len; |
2201 | char *name; | |
93a17b20 | 2202 | sv = cSVOP->op_sv; |
463ee0b2 | 2203 | name = SvPV(sv, len); |
b1cb66bf | 2204 | curstash = gv_stashpvn(name,len,TRUE); |
463ee0b2 | 2205 | sv_setpvn(curstname, name, len); |
93a17b20 LW |
2206 | op_free(op); |
2207 | } | |
2208 | else { | |
2209 | sv_setpv(curstname,"<none>"); | |
2210 | curstash = Nullhv; | |
2211 | } | |
79072805 | 2212 | copline = NOLINE; |
8990e307 | 2213 | expect = XSTATE; |
79072805 LW |
2214 | } |
2215 | ||
85e6fe83 | 2216 | void |
b1cb66bf | 2217 | utilize(aver, floor, version, id, arg) |
85e6fe83 | 2218 | int aver; |
c07a80fd | 2219 | I32 floor; |
b1cb66bf | 2220 | OP *version; |
85e6fe83 LW |
2221 | OP *id; |
2222 | OP *arg; | |
2223 | { | |
a0d0e21e LW |
2224 | OP *pack; |
2225 | OP *meth; | |
2226 | OP *rqop; | |
2227 | OP *imop; | |
b1cb66bf | 2228 | OP *veop; |
85e6fe83 | 2229 | |
a0d0e21e LW |
2230 | if (id->op_type != OP_CONST) |
2231 | croak("Module name must be constant"); | |
85e6fe83 | 2232 | |
b1cb66bf | 2233 | veop = Nullop; |
2234 | ||
2235 | if(version != Nullop) { | |
2236 | SV *vesv = ((SVOP*)version)->op_sv; | |
2237 | ||
2238 | if (arg == Nullop && !SvNIOK(vesv)) { | |
2239 | arg = version; | |
2240 | } | |
2241 | else { | |
2242 | OP *pack; | |
2243 | OP *meth; | |
2244 | ||
2245 | if (version->op_type != OP_CONST || !SvNIOK(vesv)) | |
2246 | croak("Version number must be constant number"); | |
2247 | ||
2248 | /* Make copy of id so we don't free it twice */ | |
2249 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); | |
2250 | ||
2251 | /* Fake up a method call to VERSION */ | |
2252 | meth = newSVOP(OP_CONST, 0, newSVpv("VERSION", 7)); | |
2253 | veop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, | |
2254 | append_elem(OP_LIST, | |
2255 | prepend_elem(OP_LIST, pack, list(version)), | |
2256 | newUNOP(OP_METHOD, 0, meth))); | |
2257 | } | |
2258 | } | |
2259 | ||
a0d0e21e | 2260 | /* Fake up an import/unimport */ |
4633a7c4 LW |
2261 | if (arg && arg->op_type == OP_STUB) |
2262 | imop = arg; /* no import on explicit () */ | |
b1cb66bf | 2263 | else if(SvNIOK(((SVOP*)id)->op_sv)) { |
2264 | imop = Nullop; /* use 5.0; */ | |
2265 | } | |
4633a7c4 LW |
2266 | else { |
2267 | /* Make copy of id so we don't free it twice */ | |
2268 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); | |
4633a7c4 LW |
2269 | meth = newSVOP(OP_CONST, 0, |
2270 | aver | |
2271 | ? newSVpv("import", 6) | |
2272 | : newSVpv("unimport", 8) | |
2273 | ); | |
2274 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, | |
a0d0e21e LW |
2275 | append_elem(OP_LIST, |
2276 | prepend_elem(OP_LIST, pack, list(arg)), | |
2277 | newUNOP(OP_METHOD, 0, meth))); | |
4633a7c4 LW |
2278 | } |
2279 | ||
2280 | /* Fake up a require */ | |
2281 | rqop = newUNOP(OP_REQUIRE, 0, id); | |
a0d0e21e LW |
2282 | |
2283 | /* Fake up the BEGIN {}, which does its thing immediately. */ | |
c07a80fd | 2284 | newSUB(floor, |
a0d0e21e | 2285 | newSVOP(OP_CONST, 0, newSVpv("BEGIN", 5)), |
4633a7c4 | 2286 | Nullop, |
a0d0e21e | 2287 | append_elem(OP_LINESEQ, |
b1cb66bf | 2288 | append_elem(OP_LINESEQ, |
2289 | newSTATEOP(0, Nullch, rqop), | |
2290 | newSTATEOP(0, Nullch, veop)), | |
a0d0e21e | 2291 | newSTATEOP(0, Nullch, imop) )); |
85e6fe83 | 2292 | |
85e6fe83 LW |
2293 | copline = NOLINE; |
2294 | expect = XSTATE; | |
2295 | } | |
2296 | ||
79072805 LW |
2297 | OP * |
2298 | newSLICEOP(flags, subscript, listval) | |
2299 | I32 flags; | |
2300 | OP *subscript; | |
2301 | OP *listval; | |
2302 | { | |
2303 | return newBINOP(OP_LSLICE, flags, | |
8990e307 LW |
2304 | list(force_list(subscript)), |
2305 | list(force_list(listval)) ); | |
79072805 LW |
2306 | } |
2307 | ||
2308 | static I32 | |
2309 | list_assignment(op) | |
2310 | register OP *op; | |
2311 | { | |
2312 | if (!op) | |
2313 | return TRUE; | |
2314 | ||
2315 | if (op->op_type == OP_NULL && op->op_flags & OPf_KIDS) | |
2316 | op = cUNOP->op_first; | |
2317 | ||
2318 | if (op->op_type == OP_COND_EXPR) { | |
2319 | I32 t = list_assignment(cCONDOP->op_first->op_sibling); | |
2320 | I32 f = list_assignment(cCONDOP->op_first->op_sibling->op_sibling); | |
2321 | ||
2322 | if (t && f) | |
2323 | return TRUE; | |
2324 | if (t || f) | |
2325 | yyerror("Assignment to both a list and a scalar"); | |
2326 | return FALSE; | |
2327 | } | |
2328 | ||
2329 | if (op->op_type == OP_LIST || op->op_flags & OPf_PARENS || | |
2330 | op->op_type == OP_RV2AV || op->op_type == OP_RV2HV || | |
2331 | op->op_type == OP_ASLICE || op->op_type == OP_HSLICE) | |
2332 | return TRUE; | |
2333 | ||
93a17b20 LW |
2334 | if (op->op_type == OP_PADAV || op->op_type == OP_PADHV) |
2335 | return TRUE; | |
2336 | ||
79072805 LW |
2337 | if (op->op_type == OP_RV2SV) |
2338 | return FALSE; | |
2339 | ||
2340 | return FALSE; | |
2341 | } | |
2342 | ||
2343 | OP * | |
a0d0e21e | 2344 | newASSIGNOP(flags, left, optype, right) |
79072805 LW |
2345 | I32 flags; |
2346 | OP *left; | |
a0d0e21e | 2347 | I32 optype; |
79072805 LW |
2348 | OP *right; |
2349 | { | |
2350 | OP *op; | |
2351 | ||
a0d0e21e LW |
2352 | if (optype) { |
2353 | if (optype == OP_ANDASSIGN || optype == OP_ORASSIGN) { | |
2354 | return newLOGOP(optype, 0, | |
2355 | mod(scalar(left), optype), | |
2356 | newUNOP(OP_SASSIGN, 0, scalar(right))); | |
2357 | } | |
2358 | else { | |
2359 | return newBINOP(optype, OPf_STACKED, | |
2360 | mod(scalar(left), optype), scalar(right)); | |
2361 | } | |
2362 | } | |
2363 | ||
79072805 | 2364 | if (list_assignment(left)) { |
463ee0b2 | 2365 | modcount = 0; |
748a9306 | 2366 | eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ |
463ee0b2 | 2367 | left = mod(left, OP_AASSIGN); |
748a9306 LW |
2368 | if (eval_start) |
2369 | eval_start = 0; | |
2370 | else { | |
a0d0e21e LW |
2371 | op_free(left); |
2372 | op_free(right); | |
2373 | return Nullop; | |
2374 | } | |
79072805 | 2375 | op = newBINOP(OP_AASSIGN, flags, |
8990e307 LW |
2376 | list(force_list(right)), |
2377 | list(force_list(left)) ); | |
c07a80fd | 2378 | op->op_private = 0 | (flags >> 8); |
a0d0e21e | 2379 | if (!(left->op_private & OPpLVAL_INTRO)) { |
748a9306 | 2380 | static int generation = 100; |
79072805 LW |
2381 | OP *curop; |
2382 | OP *lastop = op; | |
2383 | generation++; | |
2384 | for (curop = LINKLIST(op); curop != op; curop = LINKLIST(curop)) { | |
2385 | if (opargs[curop->op_type] & OA_DANGEROUS) { | |
2386 | if (curop->op_type == OP_GV) { | |
2387 | GV *gv = ((GVOP*)curop)->op_gv; | |
2388 | if (gv == defgv || SvCUR(gv) == generation) | |
2389 | break; | |
2390 | SvCUR(gv) = generation; | |
2391 | } | |
748a9306 LW |
2392 | else if (curop->op_type == OP_PADSV || |
2393 | curop->op_type == OP_PADAV || | |
2394 | curop->op_type == OP_PADHV || | |
2395 | curop->op_type == OP_PADANY) { | |
2396 | SV **svp = AvARRAY(comppad_name); | |
8e07c86e | 2397 | SV *sv = svp[curop->op_targ]; |
748a9306 LW |
2398 | if (SvCUR(sv) == generation) |
2399 | break; | |
2400 | SvCUR(sv) = generation; /* (SvCUR not used any more) */ | |
2401 | } | |
79072805 LW |
2402 | else if (curop->op_type == OP_RV2CV) |
2403 | break; | |
2404 | else if (curop->op_type == OP_RV2SV || | |
2405 | curop->op_type == OP_RV2AV || | |
2406 | curop->op_type == OP_RV2HV || | |
2407 | curop->op_type == OP_RV2GV) { | |
2408 | if (lastop->op_type != OP_GV) /* funny deref? */ | |
2409 | break; | |
2410 | } | |
2411 | else | |
2412 | break; | |
2413 | } | |
2414 | lastop = curop; | |
2415 | } | |
2416 | if (curop != op) | |
2417 | op->op_private = OPpASSIGN_COMMON; | |
2418 | } | |
c07a80fd | 2419 | if (right && right->op_type == OP_SPLIT) { |
2420 | OP* tmpop; | |
2421 | if ((tmpop = ((LISTOP*)right)->op_first) && | |
2422 | tmpop->op_type == OP_PUSHRE) | |
2423 | { | |
2424 | PMOP *pm = (PMOP*)tmpop; | |
2425 | if (left->op_type == OP_RV2AV && | |
2426 | !(left->op_private & OPpLVAL_INTRO) && | |
2427 | !(op->op_private & OPpASSIGN_COMMON) ) | |
2428 | { | |
2429 | tmpop = ((UNOP*)left)->op_first; | |
2430 | if (tmpop->op_type == OP_GV && !pm->op_pmreplroot) { | |
2431 | pm->op_pmreplroot = (OP*)((GVOP*)tmpop)->op_gv; | |
2432 | pm->op_pmflags |= PMf_ONCE; | |
2433 | tmpop = ((UNOP*)op)->op_first; /* to list (nulled) */ | |
2434 | tmpop = ((UNOP*)tmpop)->op_first; /* to pushmark */ | |
2435 | tmpop->op_sibling = Nullop; /* don't free split */ | |
2436 | right->op_next = tmpop->op_next; /* fix starting loc */ | |
2437 | op_free(op); /* blow off assign */ | |
54310121 | 2438 | right->op_flags &= ~OPf_WANT; |
a5f75d66 | 2439 | /* "I don't know and I don't care." */ |
c07a80fd | 2440 | return right; |
2441 | } | |
2442 | } | |
2443 | else { | |
2444 | if (modcount < 10000 && | |
2445 | ((LISTOP*)right)->op_last->op_type == OP_CONST) | |
2446 | { | |
2447 | SV *sv = ((SVOP*)((LISTOP*)right)->op_last)->op_sv; | |
2448 | if (SvIVX(sv) == 0) | |
2449 | sv_setiv(sv, modcount+1); | |
2450 | } | |
2451 | } | |
2452 | } | |
2453 | } | |
79072805 LW |
2454 | return op; |
2455 | } | |
2456 | if (!right) | |
2457 | right = newOP(OP_UNDEF, 0); | |
2458 | if (right->op_type == OP_READLINE) { | |
2459 | right->op_flags |= OPf_STACKED; | |
463ee0b2 | 2460 | return newBINOP(OP_NULL, flags, mod(scalar(left), OP_SASSIGN), scalar(right)); |
79072805 | 2461 | } |
a0d0e21e | 2462 | else { |
748a9306 | 2463 | eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ |
79072805 | 2464 | op = newBINOP(OP_SASSIGN, flags, |
463ee0b2 | 2465 | scalar(right), mod(scalar(left), OP_SASSIGN) ); |
748a9306 LW |
2466 | if (eval_start) |
2467 | eval_start = 0; | |
2468 | else { | |
a0d0e21e LW |
2469 | op_free(op); |
2470 | return Nullop; | |
2471 | } | |
2472 | } | |
79072805 LW |
2473 | return op; |
2474 | } | |
2475 | ||
2476 | OP * | |
2477 | newSTATEOP(flags, label, op) | |
2478 | I32 flags; | |
2479 | char *label; | |
2480 | OP *op; | |
2481 | { | |
bbce6d69 | 2482 | U32 seq = intro_my(); |
79072805 LW |
2483 | register COP *cop; |
2484 | ||
2485 | Newz(1101, cop, 1, COP); | |
8990e307 LW |
2486 | if (perldb && curcop->cop_line && curstash != debstash) { |
2487 | cop->op_type = OP_DBSTATE; | |
2488 | cop->op_ppaddr = ppaddr[ OP_DBSTATE ]; | |
2489 | } | |
2490 | else { | |
2491 | cop->op_type = OP_NEXTSTATE; | |
2492 | cop->op_ppaddr = ppaddr[ OP_NEXTSTATE ]; | |
2493 | } | |
79072805 | 2494 | cop->op_flags = flags; |
c07a80fd | 2495 | cop->op_private = 0 | (flags >> 8); |
ff0cee69 | 2496 | #ifdef NATIVE_HINTS |
2497 | cop->op_private |= NATIVE_HINTS; | |
2498 | #endif | |
79072805 LW |
2499 | cop->op_next = (OP*)cop; |
2500 | ||
463ee0b2 LW |
2501 | if (label) { |
2502 | cop->cop_label = label; | |
85e6fe83 | 2503 | hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 2504 | } |
bbce6d69 | 2505 | cop->cop_seq = seq; |
a0d0e21e | 2506 | cop->cop_arybase = curcop->cop_arybase; |
79072805 LW |
2507 | |
2508 | if (copline == NOLINE) | |
2509 | cop->cop_line = curcop->cop_line; | |
2510 | else { | |
2511 | cop->cop_line = copline; | |
2512 | copline = NOLINE; | |
2513 | } | |
44a8e56a | 2514 | cop->cop_filegv = (GV*)SvREFCNT_inc(curcop->cop_filegv); |
79072805 LW |
2515 | cop->cop_stash = curstash; |
2516 | ||
8990e307 | 2517 | if (perldb && curstash != debstash) { |
93a17b20 LW |
2518 | SV **svp = av_fetch(GvAV(curcop->cop_filegv),(I32)cop->cop_line, FALSE); |
2519 | if (svp && *svp != &sv_undef && !SvIOK(*svp)) { | |
a0d0e21e | 2520 | (void)SvIOK_on(*svp); |
a5f75d66 | 2521 | SvIVX(*svp) = 1; |
93a17b20 LW |
2522 | SvSTASH(*svp) = (HV*)cop; |
2523 | } | |
2524 | } | |
2525 | ||
79072805 LW |
2526 | return prepend_elem(OP_LINESEQ, (OP*)cop, op); |
2527 | } | |
2528 | ||
bbce6d69 | 2529 | /* "Introduce" my variables to visible status. */ |
2530 | U32 | |
2531 | intro_my() | |
2532 | { | |
2533 | SV **svp; | |
2534 | SV *sv; | |
2535 | I32 i; | |
2536 | ||
2537 | if (! min_intro_pending) | |
2538 | return cop_seqmax; | |
2539 | ||
2540 | svp = AvARRAY(comppad_name); | |
2541 | for (i = min_intro_pending; i <= max_intro_pending; i++) { | |
2542 | if ((sv = svp[i]) && sv != &sv_undef && !SvIVX(sv)) { | |
2543 | SvIVX(sv) = 999999999; /* Don't know scope end yet. */ | |
2544 | SvNVX(sv) = (double)cop_seqmax; | |
2545 | } | |
2546 | } | |
2547 | min_intro_pending = 0; | |
2548 | comppad_name_fill = max_intro_pending; /* Needn't search higher */ | |
2549 | return cop_seqmax++; | |
2550 | } | |
2551 | ||
79072805 LW |
2552 | OP * |
2553 | newLOGOP(type, flags, first, other) | |
2554 | I32 type; | |
2555 | I32 flags; | |
2556 | OP* first; | |
2557 | OP* other; | |
2558 | { | |
2559 | LOGOP *logop; | |
2560 | OP *op; | |
2561 | ||
a0d0e21e LW |
2562 | if (type == OP_XOR) /* Not short circuit, but here by precedence. */ |
2563 | return newBINOP(type, flags, scalar(first), scalar(other)); | |
2564 | ||
8990e307 | 2565 | scalarboolean(first); |
79072805 LW |
2566 | /* optimize "!a && b" to "a || b", and "!a || b" to "a && b" */ |
2567 | if (first->op_type == OP_NOT && (first->op_flags & OPf_SPECIAL)) { | |
2568 | if (type == OP_AND || type == OP_OR) { | |
2569 | if (type == OP_AND) | |
2570 | type = OP_OR; | |
2571 | else | |
2572 | type = OP_AND; | |
2573 | op = first; | |
2574 | first = cUNOP->op_first; | |
2575 | if (op->op_next) | |
2576 | first->op_next = op->op_next; | |
2577 | cUNOP->op_first = Nullop; | |
2578 | op_free(op); | |
2579 | } | |
2580 | } | |
2581 | if (first->op_type == OP_CONST) { | |
93a17b20 | 2582 | if (dowarn && (first->op_private & OPpCONST_BARE)) |
c07a80fd | 2583 | warn("Probable precedence problem on %s", op_desc[type]); |
79072805 LW |
2584 | if ((type == OP_AND) == (SvTRUE(((SVOP*)first)->op_sv))) { |
2585 | op_free(first); | |
2586 | return other; | |
2587 | } | |
2588 | else { | |
2589 | op_free(other); | |
2590 | return first; | |
2591 | } | |
2592 | } | |
2593 | else if (first->op_type == OP_WANTARRAY) { | |
2594 | if (type == OP_AND) | |
2595 | list(other); | |
2596 | else | |
2597 | scalar(other); | |
2598 | } | |
a6006777 | 2599 | else if (dowarn && (first->op_flags & OPf_KIDS)) { |
2600 | OP *k1 = ((UNOP*)first)->op_first; | |
2601 | OP *k2 = k1->op_sibling; | |
2602 | OPCODE warnop = 0; | |
2603 | switch (first->op_type) | |
2604 | { | |
2605 | case OP_NULL: | |
2606 | if (k2 && k2->op_type == OP_READLINE | |
2607 | && (k2->op_flags & OPf_STACKED) | |
2608 | && (k1->op_type == OP_RV2SV || k1->op_type == OP_PADSV)) | |
2609 | warnop = k2->op_type; | |
2610 | break; | |
2611 | ||
2612 | case OP_SASSIGN: | |
68dc0745 | 2613 | if (k1->op_type == OP_READDIR |
2614 | || k1->op_type == OP_GLOB | |
2615 | || k1->op_type == OP_EACH) | |
a6006777 | 2616 | warnop = k1->op_type; |
2617 | break; | |
2618 | } | |
8ebc5c01 | 2619 | if (warnop) { |
2620 | line_t oldline = curcop->cop_line; | |
2621 | curcop->cop_line = copline; | |
68dc0745 | 2622 | warn("Value of %s%s can be \"0\"; test with defined()", |
2623 | op_desc[warnop], | |
2624 | ((warnop == OP_READLINE || warnop == OP_GLOB) | |
2625 | ? " construct" : "() operator")); | |
2626 | curcop->cop_line = oldline; | |
8ebc5c01 | 2627 | } |
a6006777 | 2628 | } |
79072805 LW |
2629 | |
2630 | if (!other) | |
2631 | return first; | |
2632 | ||
a0d0e21e LW |
2633 | if (type == OP_ANDASSIGN || type == OP_ORASSIGN) |
2634 | other->op_private |= OPpASSIGN_BACKWARDS; /* other is an OP_SASSIGN */ | |
2635 | ||
79072805 LW |
2636 | Newz(1101, logop, 1, LOGOP); |
2637 | ||
2638 | logop->op_type = type; | |
2639 | logop->op_ppaddr = ppaddr[type]; | |
2640 | logop->op_first = first; | |
2641 | logop->op_flags = flags | OPf_KIDS; | |
2642 | logop->op_other = LINKLIST(other); | |
c07a80fd | 2643 | logop->op_private = 1 | (flags >> 8); |
79072805 LW |
2644 | |
2645 | /* establish postfix order */ | |
2646 | logop->op_next = LINKLIST(first); | |
2647 | first->op_next = (OP*)logop; | |
2648 | first->op_sibling = other; | |
2649 | ||
2650 | op = newUNOP(OP_NULL, 0, (OP*)logop); | |
2651 | other->op_next = op; | |
2652 | ||
2653 | return op; | |
2654 | } | |
2655 | ||
2656 | OP * | |
b1cb66bf | 2657 | newCONDOP(flags, first, trueop, falseop) |
79072805 LW |
2658 | I32 flags; |
2659 | OP* first; | |
b1cb66bf | 2660 | OP* trueop; |
2661 | OP* falseop; | |
79072805 LW |
2662 | { |
2663 | CONDOP *condop; | |
2664 | OP *op; | |
2665 | ||
b1cb66bf | 2666 | if (!falseop) |
2667 | return newLOGOP(OP_AND, 0, first, trueop); | |
2668 | if (!trueop) | |
2669 | return newLOGOP(OP_OR, 0, first, falseop); | |
79072805 | 2670 | |
8990e307 | 2671 | scalarboolean(first); |
79072805 LW |
2672 | if (first->op_type == OP_CONST) { |
2673 | if (SvTRUE(((SVOP*)first)->op_sv)) { | |
2674 | op_free(first); | |
b1cb66bf | 2675 | op_free(falseop); |
2676 | return trueop; | |
79072805 LW |
2677 | } |
2678 | else { | |
2679 | op_free(first); | |
b1cb66bf | 2680 | op_free(trueop); |
2681 | return falseop; | |
79072805 LW |
2682 | } |
2683 | } | |
2684 | else if (first->op_type == OP_WANTARRAY) { | |
b1cb66bf | 2685 | list(trueop); |
2686 | scalar(falseop); | |
79072805 LW |
2687 | } |
2688 | Newz(1101, condop, 1, CONDOP); | |
2689 | ||
2690 | condop->op_type = OP_COND_EXPR; | |
2691 | condop->op_ppaddr = ppaddr[OP_COND_EXPR]; | |
2692 | condop->op_first = first; | |
2693 | condop->op_flags = flags | OPf_KIDS; | |
b1cb66bf | 2694 | condop->op_true = LINKLIST(trueop); |
2695 | condop->op_false = LINKLIST(falseop); | |
c07a80fd | 2696 | condop->op_private = 1 | (flags >> 8); |
79072805 LW |
2697 | |
2698 | /* establish postfix order */ | |
2699 | condop->op_next = LINKLIST(first); | |
2700 | first->op_next = (OP*)condop; | |
2701 | ||
b1cb66bf | 2702 | first->op_sibling = trueop; |
2703 | trueop->op_sibling = falseop; | |
79072805 LW |
2704 | op = newUNOP(OP_NULL, 0, (OP*)condop); |
2705 | ||
b1cb66bf | 2706 | trueop->op_next = op; |
2707 | falseop->op_next = op; | |
79072805 LW |
2708 | |
2709 | return op; | |
2710 | } | |
2711 | ||
2712 | OP * | |
2713 | newRANGE(flags, left, right) | |
2714 | I32 flags; | |
2715 | OP *left; | |
2716 | OP *right; | |
2717 | { | |
2718 | CONDOP *condop; | |
2719 | OP *flip; | |
2720 | OP *flop; | |
2721 | OP *op; | |
2722 | ||
2723 | Newz(1101, condop, 1, CONDOP); | |
2724 | ||
2725 | condop->op_type = OP_RANGE; | |
2726 | condop->op_ppaddr = ppaddr[OP_RANGE]; | |
2727 | condop->op_first = left; | |
2728 | condop->op_flags = OPf_KIDS; | |
2729 | condop->op_true = LINKLIST(left); | |
2730 | condop->op_false = LINKLIST(right); | |
c07a80fd | 2731 | condop->op_private = 1 | (flags >> 8); |
79072805 LW |
2732 | |
2733 | left->op_sibling = right; | |
2734 | ||
2735 | condop->op_next = (OP*)condop; | |
2736 | flip = newUNOP(OP_FLIP, flags, (OP*)condop); | |
2737 | flop = newUNOP(OP_FLOP, 0, flip); | |
2738 | op = newUNOP(OP_NULL, 0, flop); | |
2739 | linklist(flop); | |
2740 | ||
2741 | left->op_next = flip; | |
2742 | right->op_next = flop; | |
2743 | ||
ed6116ce | 2744 | condop->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 | 2745 | sv_upgrade(PAD_SV(condop->op_targ), SVt_PVNV); |
ed6116ce | 2746 | flip->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 LW |
2747 | sv_upgrade(PAD_SV(flip->op_targ), SVt_PVNV); |
2748 | ||
2749 | flip->op_private = left->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
2750 | flop->op_private = right->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
2751 | ||
2752 | flip->op_next = op; | |
2753 | if (!flip->op_private || !flop->op_private) | |
2754 | linklist(op); /* blow off optimizer unless constant */ | |
2755 | ||
2756 | return op; | |
2757 | } | |
2758 | ||
2759 | OP * | |
2760 | newLOOPOP(flags, debuggable, expr, block) | |
2761 | I32 flags; | |
2762 | I32 debuggable; | |
2763 | OP *expr; | |
2764 | OP *block; | |
2765 | { | |
463ee0b2 | 2766 | OP* listop; |
93a17b20 | 2767 | OP* op; |
463ee0b2 | 2768 | int once = block && block->op_flags & OPf_SPECIAL && |
a0d0e21e | 2769 | (block->op_type == OP_ENTERSUB || block->op_type == OP_NULL); |
93a17b20 | 2770 | |
463ee0b2 LW |
2771 | if (expr) { |
2772 | if (once && expr->op_type == OP_CONST && !SvTRUE(((SVOP*)expr)->op_sv)) | |
2773 | return block; /* do {} while 0 does once */ | |
774d564b | 2774 | if (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB) { |
2775 | expr = newUNOP(OP_DEFINED, 0, | |
2776 | newASSIGNOP(0, newSVREF(newGVOP(OP_GV, 0, defgv)), 0, expr) ); | |
2777 | } | |
463ee0b2 | 2778 | } |
93a17b20 | 2779 | |
8990e307 | 2780 | listop = append_elem(OP_LINESEQ, block, newOP(OP_UNSTACK, 0)); |
93a17b20 | 2781 | op = newLOGOP(OP_AND, 0, expr, listop); |
463ee0b2 | 2782 | |
79072805 LW |
2783 | ((LISTOP*)listop)->op_last->op_next = LINKLIST(op); |
2784 | ||
463ee0b2 | 2785 | if (once && op != listop) |
79072805 LW |
2786 | op->op_next = ((LOGOP*)cUNOP->op_first)->op_other; |
2787 | ||
748a9306 LW |
2788 | if (op == listop) |
2789 | op = newUNOP(OP_NULL, 0, op); /* or do {} while 1 loses outer block */ | |
2790 | ||
79072805 | 2791 | op->op_flags |= flags; |
a0d0e21e | 2792 | op = scope(op); |
748a9306 | 2793 | op->op_flags |= OPf_SPECIAL; /* suppress POPBLOCK curpm restoration*/ |
a0d0e21e | 2794 | return op; |
79072805 LW |
2795 | } |
2796 | ||
2797 | OP * | |
2798 | newWHILEOP(flags, debuggable, loop, expr, block, cont) | |
2799 | I32 flags; | |
2800 | I32 debuggable; | |
2801 | LOOP *loop; | |
2802 | OP *expr; | |
2803 | OP *block; | |
2804 | OP *cont; | |
2805 | { | |
2806 | OP *redo; | |
2807 | OP *next = 0; | |
2808 | OP *listop; | |
2809 | OP *op; | |
2810 | OP *condop; | |
2811 | ||
748a9306 LW |
2812 | if (expr && (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB)) { |
2813 | expr = newUNOP(OP_DEFINED, 0, | |
2814 | newASSIGNOP(0, newSVREF(newGVOP(OP_GV, 0, defgv)), 0, expr) ); | |
2815 | } | |
79072805 LW |
2816 | |
2817 | if (!block) | |
2818 | block = newOP(OP_NULL, 0); | |
2819 | ||
2820 | if (cont) | |
2821 | next = LINKLIST(cont); | |
2822 | if (expr) | |
2823 | cont = append_elem(OP_LINESEQ, cont, newOP(OP_UNSTACK, 0)); | |
2824 | ||
463ee0b2 | 2825 | listop = append_list(OP_LINESEQ, (LISTOP*)block, (LISTOP*)cont); |
79072805 LW |
2826 | redo = LINKLIST(listop); |
2827 | ||
2828 | if (expr) { | |
2829 | op = newLOGOP(OP_AND, 0, expr, scalar(listop)); | |
85e6fe83 LW |
2830 | if (op == expr && op->op_type == OP_CONST && !SvTRUE(cSVOP->op_sv)) { |
2831 | op_free(expr); /* oops, it's a while (0) */ | |
463ee0b2 LW |
2832 | op_free((OP*)loop); |
2833 | return Nullop; /* (listop already freed by newLOGOP) */ | |
2834 | } | |
79072805 LW |
2835 | ((LISTOP*)listop)->op_last->op_next = condop = |
2836 | (op == listop ? redo : LINKLIST(op)); | |
2837 | if (!next) | |
2838 | next = condop; | |
2839 | } | |
2840 | else | |
2841 | op = listop; | |
2842 | ||
2843 | if (!loop) { | |
2844 | Newz(1101,loop,1,LOOP); | |
2845 | loop->op_type = OP_ENTERLOOP; | |
2846 | loop->op_ppaddr = ppaddr[OP_ENTERLOOP]; | |
2847 | loop->op_private = 0; | |
2848 | loop->op_next = (OP*)loop; | |
2849 | } | |
2850 | ||
463ee0b2 | 2851 | op = newBINOP(OP_LEAVELOOP, 0, (OP*)loop, op); |
79072805 LW |
2852 | |
2853 | loop->op_redoop = redo; | |
2854 | loop->op_lastop = op; | |
2855 | ||
2856 | if (next) | |
2857 | loop->op_nextop = next; | |
2858 | else | |
2859 | loop->op_nextop = op; | |
2860 | ||
2861 | op->op_flags |= flags; | |
c07a80fd | 2862 | op->op_private |= (flags >> 8); |
79072805 LW |
2863 | return op; |
2864 | } | |
2865 | ||
2866 | OP * | |
a0d0e21e | 2867 | #ifndef CAN_PROTOTYPE |
79072805 LW |
2868 | newFOROP(flags,label,forline,sv,expr,block,cont) |
2869 | I32 flags; | |
2870 | char *label; | |
2871 | line_t forline; | |
2872 | OP* sv; | |
2873 | OP* expr; | |
2874 | OP*block; | |
2875 | OP*cont; | |
8990e307 LW |
2876 | #else |
2877 | newFOROP(I32 flags,char *label,line_t forline,OP *sv,OP *expr,OP *block,OP *cont) | |
a0d0e21e | 2878 | #endif /* CAN_PROTOTYPE */ |
79072805 LW |
2879 | { |
2880 | LOOP *loop; | |
85e6fe83 | 2881 | int padoff = 0; |
4633a7c4 | 2882 | I32 iterflags = 0; |
79072805 LW |
2883 | |
2884 | copline = forline; | |
2885 | if (sv) { | |
85e6fe83 | 2886 | if (sv->op_type == OP_RV2SV) { /* symbol table variable */ |
748a9306 LW |
2887 | sv->op_type = OP_RV2GV; |
2888 | sv->op_ppaddr = ppaddr[OP_RV2GV]; | |
79072805 | 2889 | } |
85e6fe83 LW |
2890 | else if (sv->op_type == OP_PADSV) { /* private variable */ |
2891 | padoff = sv->op_targ; | |
2892 | op_free(sv); | |
2893 | sv = Nullop; | |
2894 | } | |
79072805 | 2895 | else |
c07a80fd | 2896 | croak("Can't use %s for loop variable", op_desc[sv->op_type]); |
79072805 LW |
2897 | } |
2898 | else { | |
2899 | sv = newGVOP(OP_GV, 0, defgv); | |
2900 | } | |
5f05dabc | 2901 | if (expr->op_type == OP_RV2AV || expr->op_type == OP_PADAV) { |
4633a7c4 LW |
2902 | expr = scalar(ref(expr, OP_ITER)); |
2903 | iterflags |= OPf_STACKED; | |
2904 | } | |
2905 | loop = (LOOP*)list(convert(OP_ENTERITER, iterflags, | |
a0d0e21e LW |
2906 | append_elem(OP_LIST, mod(force_list(expr), OP_GREPSTART), |
2907 | scalar(sv)))); | |
85e6fe83 LW |
2908 | assert(!loop->op_next); |
2909 | Renew(loop, 1, LOOP); | |
2910 | loop->op_targ = padoff; | |
2911 | return newSTATEOP(0, label, newWHILEOP(flags, 1, loop, | |
2912 | newOP(OP_ITER, 0), block, cont)); | |
79072805 LW |
2913 | } |
2914 | ||
8990e307 LW |
2915 | OP* |
2916 | newLOOPEX(type, label) | |
2917 | I32 type; | |
2918 | OP* label; | |
2919 | { | |
2920 | OP *op; | |
2921 | if (type != OP_GOTO || label->op_type == OP_CONST) { | |
a0d0e21e LW |
2922 | op = newPVOP(type, 0, savepv( |
2923 | label->op_type == OP_CONST | |
2924 | ? SvPVx(((SVOP*)label)->op_sv, na) | |
2925 | : "" )); | |
8990e307 LW |
2926 | op_free(label); |
2927 | } | |
2928 | else { | |
a0d0e21e LW |
2929 | if (label->op_type == OP_ENTERSUB) |
2930 | label = newUNOP(OP_REFGEN, 0, mod(label, OP_REFGEN)); | |
8990e307 LW |
2931 | op = newUNOP(type, OPf_STACKED, label); |
2932 | } | |
85e6fe83 | 2933 | hints |= HINT_BLOCK_SCOPE; |
8990e307 LW |
2934 | return op; |
2935 | } | |
2936 | ||
79072805 | 2937 | void |
85e6fe83 | 2938 | cv_undef(cv) |
79072805 LW |
2939 | CV *cv; |
2940 | { | |
a0d0e21e LW |
2941 | if (!CvXSUB(cv) && CvROOT(cv)) { |
2942 | if (CvDEPTH(cv)) | |
2943 | croak("Can't undef active subroutine"); | |
8990e307 | 2944 | ENTER; |
a0d0e21e LW |
2945 | |
2946 | SAVESPTR(curpad); | |
2947 | curpad = 0; | |
2948 | ||
a5f75d66 | 2949 | if (!CvCLONED(cv)) |
748a9306 | 2950 | op_free(CvROOT(cv)); |
79072805 | 2951 | CvROOT(cv) = Nullop; |
8990e307 | 2952 | LEAVE; |
79072805 | 2953 | } |
1d5db326 | 2954 | SvPOK_off((SV*)cv); /* forget prototype */ |
44a8e56a | 2955 | CvFLAGS(cv) = 0; |
8e07c86e AD |
2956 | SvREFCNT_dec(CvGV(cv)); |
2957 | CvGV(cv) = Nullgv; | |
2958 | SvREFCNT_dec(CvOUTSIDE(cv)); | |
2959 | CvOUTSIDE(cv) = Nullcv; | |
2960 | if (CvPADLIST(cv)) { | |
8ebc5c01 | 2961 | /* may be during global destruction */ |
2962 | if (SvREFCNT(CvPADLIST(cv))) { | |
2963 | I32 i = AvFILL(CvPADLIST(cv)); | |
2964 | while (i >= 0) { | |
2965 | SV** svp = av_fetch(CvPADLIST(cv), i--, FALSE); | |
46fc3d4c | 2966 | SV* sv = svp ? *svp : Nullsv; |
2967 | if (!sv) | |
2968 | continue; | |
2969 | if (sv == (SV*)comppad_name) | |
2970 | comppad_name = Nullav; | |
2971 | else if (sv == (SV*)comppad) { | |
2972 | comppad = Nullav; | |
2973 | curpad = Null(SV**); | |
2974 | } | |
2975 | SvREFCNT_dec(sv); | |
8ebc5c01 | 2976 | } |
2977 | SvREFCNT_dec((SV*)CvPADLIST(cv)); | |
8e07c86e | 2978 | } |
8e07c86e AD |
2979 | CvPADLIST(cv) = Nullav; |
2980 | } | |
79072805 LW |
2981 | } |
2982 | ||
5f05dabc | 2983 | #ifdef DEBUG_CLOSURES |
2984 | static void | |
2985 | cv_dump(cv) | |
2986 | CV* cv; | |
2987 | { | |
2988 | CV *outside = CvOUTSIDE(cv); | |
2989 | AV* padlist = CvPADLIST(cv); | |
4fdae800 | 2990 | AV* pad_name; |
2991 | AV* pad; | |
2992 | SV** pname; | |
2993 | SV** ppad; | |
5f05dabc | 2994 | I32 ix; |
2995 | ||
2996 | PerlIO_printf(Perl_debug_log, "\tCV=0x%p (%s), OUTSIDE=0x%p (%s)\n", | |
ab50184a CS |
2997 | cv, |
2998 | (CvANON(cv) ? "ANON" | |
2999 | : (cv == main_cv) ? "MAIN" | |
07055b4c | 3000 | : CvUNIQUE(outside) ? "UNIQUE" |
44a8e56a | 3001 | : CvGV(cv) ? GvNAME(CvGV(cv)) : "UNDEFINED"), |
ab50184a CS |
3002 | outside, |
3003 | (!outside ? "null" | |
3004 | : CvANON(outside) ? "ANON" | |
3005 | : (outside == main_cv) ? "MAIN" | |
07055b4c | 3006 | : CvUNIQUE(outside) ? "UNIQUE" |
44a8e56a | 3007 | : CvGV(outside) ? GvNAME(CvGV(outside)) : "UNDEFINED")); |
5f05dabc | 3008 | |
4fdae800 | 3009 | if (!padlist) |
3010 | return; | |
3011 | ||
3012 | pad_name = (AV*)*av_fetch(padlist, 0, FALSE); | |
3013 | pad = (AV*)*av_fetch(padlist, 1, FALSE); | |
3014 | pname = AvARRAY(pad_name); | |
3015 | ppad = AvARRAY(pad); | |
3016 | ||
9607fc9c | 3017 | for (ix = 1; ix <= AvFILL(pad_name); ix++) { |
5f05dabc | 3018 | if (SvPOK(pname[ix])) |
4fdae800 | 3019 | PerlIO_printf(Perl_debug_log, "\t%4d. 0x%p (%s\"%s\" %ld-%ld)\n", |
3020 | ix, ppad[ix], | |
3021 | SvFAKE(pname[ix]) ? "FAKE " : "", | |
3022 | SvPVX(pname[ix]), | |
ab50184a CS |
3023 | (long)I_32(SvNVX(pname[ix])), |
3024 | (long)SvIVX(pname[ix])); | |
5f05dabc | 3025 | } |
3026 | } | |
3027 | #endif /* DEBUG_CLOSURES */ | |
3028 | ||
3029 | static CV * | |
3030 | cv_clone2(proto, outside) | |
748a9306 | 3031 | CV* proto; |
5f05dabc | 3032 | CV* outside; |
748a9306 LW |
3033 | { |
3034 | AV* av; | |
3035 | I32 ix; | |
3036 | AV* protopadlist = CvPADLIST(proto); | |
3037 | AV* protopad_name = (AV*)*av_fetch(protopadlist, 0, FALSE); | |
3038 | AV* protopad = (AV*)*av_fetch(protopadlist, 1, FALSE); | |
5f05dabc | 3039 | SV** pname = AvARRAY(protopad_name); |
3040 | SV** ppad = AvARRAY(protopad); | |
9607fc9c | 3041 | I32 fname = AvFILL(protopad_name); |
3042 | I32 fpad = AvFILL(protopad); | |
748a9306 LW |
3043 | AV* comppadlist; |
3044 | CV* cv; | |
3045 | ||
07055b4c CS |
3046 | assert(!CvUNIQUE(proto)); |
3047 | ||
748a9306 LW |
3048 | ENTER; |
3049 | SAVESPTR(curpad); | |
3050 | SAVESPTR(comppad); | |
46fc3d4c | 3051 | SAVESPTR(comppad_name); |
748a9306 LW |
3052 | SAVESPTR(compcv); |
3053 | ||
3054 | cv = compcv = (CV*)NEWSV(1104,0); | |
fa83b5b6 | 3055 | sv_upgrade((SV *)cv, SvTYPE(proto)); |
a5f75d66 | 3056 | CvCLONED_on(cv); |
5f05dabc | 3057 | if (CvANON(proto)) |
3058 | CvANON_on(cv); | |
748a9306 LW |
3059 | |
3060 | CvFILEGV(cv) = CvFILEGV(proto); | |
44a8e56a | 3061 | CvGV(cv) = (GV*)SvREFCNT_inc(CvGV(proto)); |
748a9306 LW |
3062 | CvSTASH(cv) = CvSTASH(proto); |
3063 | CvROOT(cv) = CvROOT(proto); | |
3064 | CvSTART(cv) = CvSTART(proto); | |
5f05dabc | 3065 | if (outside) |
3066 | CvOUTSIDE(cv) = (CV*)SvREFCNT_inc(outside); | |
748a9306 | 3067 | |
68dc0745 | 3068 | if (SvPOK(proto)) |
3069 | sv_setpvn((SV*)cv, SvPVX(proto), SvCUR(proto)); | |
3070 | ||
46fc3d4c | 3071 | comppad_name = newAV(); |
3072 | for (ix = fname; ix >= 0; ix--) | |
3073 | av_store(comppad_name, ix, SvREFCNT_inc(pname[ix])); | |
3074 | ||
748a9306 LW |
3075 | comppad = newAV(); |
3076 | ||
3077 | comppadlist = newAV(); | |
3078 | AvREAL_off(comppadlist); | |
46fc3d4c | 3079 | av_store(comppadlist, 0, (SV*)comppad_name); |
b355b4e0 | 3080 | av_store(comppadlist, 1, (SV*)comppad); |
748a9306 | 3081 | CvPADLIST(cv) = comppadlist; |
5f05dabc | 3082 | av_fill(comppad, AvFILL(protopad)); |
748a9306 LW |
3083 | curpad = AvARRAY(comppad); |
3084 | ||
3085 | av = newAV(); /* will be @_ */ | |
3086 | av_extend(av, 0); | |
3087 | av_store(comppad, 0, (SV*)av); | |
3088 | AvFLAGS(av) = AVf_REIFY; | |
3089 | ||
9607fc9c | 3090 | for (ix = fpad; ix > 0; ix--) { |
3091 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; | |
aa689395 | 3092 | if (namesv && namesv != &sv_undef) { |
3093 | char *name = SvPVX(namesv); /* XXX */ | |
3094 | if (SvFLAGS(namesv) & SVf_FAKE) { /* lexical from outside? */ | |
3095 | I32 off = pad_findlex(name, ix, SvIVX(namesv), | |
5f05dabc | 3096 | CvOUTSIDE(cv), cxstack_ix); |
3097 | if (!off) | |
3098 | curpad[ix] = SvREFCNT_inc(ppad[ix]); | |
3099 | else if (off != ix) | |
748a9306 LW |
3100 | croak("panic: cv_clone: %s", name); |
3101 | } | |
3102 | else { /* our own lexical */ | |
aa689395 | 3103 | SV* sv; |
5f05dabc | 3104 | if (*name == '&') { |
3105 | /* anon code -- we'll come back for it */ | |
3106 | sv = SvREFCNT_inc(ppad[ix]); | |
3107 | } | |
3108 | else if (*name == '@') | |
3109 | sv = (SV*)newAV(); | |
748a9306 | 3110 | else if (*name == '%') |
5f05dabc | 3111 | sv = (SV*)newHV(); |
748a9306 | 3112 | else |
5f05dabc | 3113 | sv = NEWSV(0,0); |
3114 | if (!SvPADBUSY(sv)) | |
3115 | SvPADMY_on(sv); | |
3116 | curpad[ix] = sv; | |
748a9306 LW |
3117 | } |
3118 | } | |
3119 | else { | |
aa689395 | 3120 | SV* sv = NEWSV(0,0); |
748a9306 | 3121 | SvPADTMP_on(sv); |
5f05dabc | 3122 | curpad[ix] = sv; |
748a9306 LW |
3123 | } |
3124 | } | |
3125 | ||
5f05dabc | 3126 | /* Now that vars are all in place, clone nested closures. */ |
3127 | ||
9607fc9c | 3128 | for (ix = fpad; ix > 0; ix--) { |
3129 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; | |
aa689395 | 3130 | if (namesv |
3131 | && namesv != &sv_undef | |
3132 | && !(SvFLAGS(namesv) & SVf_FAKE) | |
3133 | && *SvPVX(namesv) == '&' | |
5f05dabc | 3134 | && CvCLONE(ppad[ix])) |
3135 | { | |
3136 | CV *kid = cv_clone2((CV*)ppad[ix], cv); | |
3137 | SvREFCNT_dec(ppad[ix]); | |
3138 | CvCLONE_on(kid); | |
3139 | SvPADMY_on(kid); | |
3140 | curpad[ix] = (SV*)kid; | |
3141 | } | |
3142 | } | |
3143 | ||
3144 | #ifdef DEBUG_CLOSURES | |
ab50184a CS |
3145 | PerlIO_printf(Perl_debug_log, "Cloned inside:\n"); |
3146 | cv_dump(outside); | |
3147 | PerlIO_printf(Perl_debug_log, " from:\n"); | |
5f05dabc | 3148 | cv_dump(proto); |
ab50184a | 3149 | PerlIO_printf(Perl_debug_log, " to:\n"); |
5f05dabc | 3150 | cv_dump(cv); |
3151 | #endif | |
3152 | ||
748a9306 LW |
3153 | LEAVE; |
3154 | return cv; | |
3155 | } | |
3156 | ||
5f05dabc | 3157 | CV * |
3158 | cv_clone(proto) | |
3159 | CV* proto; | |
3160 | { | |
3161 | return cv_clone2(proto, CvOUTSIDE(proto)); | |
3162 | } | |
3163 | ||
3fe9a6f1 | 3164 | void |
3165 | cv_ckproto(cv, gv, p) | |
3166 | CV* cv; | |
3167 | GV* gv; | |
3168 | char* p; | |
3169 | { | |
3170 | if ((!p != !SvPOK(cv)) || (p && strNE(p, SvPVX(cv)))) { | |
46fc3d4c | 3171 | SV* msg = sv_newmortal(); |
3fe9a6f1 | 3172 | SV* name = Nullsv; |
3173 | ||
3174 | if (gv) | |
46fc3d4c | 3175 | gv_efullname3(name = sv_newmortal(), gv, Nullch); |
3176 | sv_setpv(msg, "Prototype mismatch:"); | |
3177 | if (name) | |
fc36a67e | 3178 | sv_catpvf(msg, " sub %_", name); |
3fe9a6f1 | 3179 | if (SvPOK(cv)) |
46fc3d4c | 3180 | sv_catpvf(msg, " (%s)", SvPVX(cv)); |
3181 | sv_catpv(msg, " vs "); | |
3182 | if (p) | |
3183 | sv_catpvf(msg, "(%s)", p); | |
3184 | else | |
3185 | sv_catpv(msg, "none"); | |
fc36a67e | 3186 | warn("%_", msg); |
3fe9a6f1 | 3187 | } |
3188 | } | |
3189 | ||
760ac839 LW |
3190 | SV * |
3191 | cv_const_sv(cv) | |
3fe9a6f1 | 3192 | CV* cv; |
760ac839 LW |
3193 | { |
3194 | OP *o; | |
54310121 | 3195 | SV *sv; |
760ac839 | 3196 | |
54310121 | 3197 | if (!cv || !SvPOK(cv) || SvCUR(cv)) |
3198 | return Nullsv; | |
760ac839 | 3199 | |
54310121 | 3200 | sv = Nullsv; |
3201 | for (o = CvSTART(cv); o; o = o->op_next) { | |
3202 | OPCODE type = o->op_type; | |
3203 | ||
3204 | if (type == OP_NEXTSTATE || type == OP_NULL || type == OP_PUSHMARK) | |
3205 | continue; | |
3206 | if (type == OP_LEAVESUB || type == OP_RETURN) | |
3207 | break; | |
3208 | if (sv) | |
3209 | return Nullsv; | |
3210 | if (type == OP_CONST) | |
760ac839 | 3211 | sv = ((SVOP*)o)->op_sv; |
54310121 | 3212 | else if (type == OP_PADSV) { |
3213 | AV* pad = (AV*)(AvARRAY(CvPADLIST(cv))[1]); | |
3214 | sv = pad ? AvARRAY(pad)[o->op_targ] : Nullsv; | |
5aabfad6 | 3215 | if (!sv || (!SvREADONLY(sv) && SvREFCNT(sv) > 1)) |
54310121 | 3216 | return Nullsv; |
760ac839 | 3217 | } |
54310121 | 3218 | else |
3219 | return Nullsv; | |
760ac839 | 3220 | } |
5aabfad6 | 3221 | if (sv) |
3222 | SvREADONLY_on(sv); | |
760ac839 LW |
3223 | return sv; |
3224 | } | |
3225 | ||
748a9306 | 3226 | CV * |
4633a7c4 | 3227 | newSUB(floor,op,proto,block) |
79072805 LW |
3228 | I32 floor; |
3229 | OP *op; | |
4633a7c4 | 3230 | OP *proto; |
79072805 LW |
3231 | OP *block; |
3232 | { | |
44a8e56a | 3233 | char *name = op ? SvPVx(cSVOP->op_sv, na) : Nullch; |
3234 | GV *gv = gv_fetchpv(name ? name : "__ANON__", GV_ADDMULTI, SVt_PVCV); | |
3fe9a6f1 | 3235 | char *ps = proto ? SvPVx(((SVOP*)proto)->op_sv, na) : Nullch; |
79072805 | 3236 | register CV *cv; |
a0d0e21e | 3237 | I32 ix; |
79072805 | 3238 | |
44a8e56a | 3239 | if (op) |
8ebc5c01 | 3240 | SAVEFREEOP(op); |
3fe9a6f1 | 3241 | if (proto) |
3242 | SAVEFREEOP(proto); | |
3243 | ||
68dc0745 | 3244 | if (!name || GvCVGEN(gv)) |
3245 | cv = Nullcv; | |
3246 | else if (cv = GvCV(gv)) { | |
3fe9a6f1 | 3247 | cv_ckproto(cv, gv, ps); |
68dc0745 | 3248 | /* already defined (or promised)? */ |
3249 | if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
3250 | SV* const_sv; | |
aa689395 | 3251 | if (!block) { |
3252 | /* just a "sub foo;" when &foo is already defined */ | |
3253 | SAVEFREESV(compcv); | |
3254 | goto done; | |
3255 | } | |
7bac28a0 | 3256 | /* ahem, death to those who redefine active sort subs */ |
3257 | if (curstack == sortstack && sortcop == CvSTART(cv)) | |
3258 | croak("Can't redefine active sort subroutine %s", name); | |
68dc0745 | 3259 | const_sv = cv_const_sv(cv); |
44a8e56a | 3260 | if (const_sv || dowarn) { |
79072805 | 3261 | line_t oldline = curcop->cop_line; |
79072805 | 3262 | curcop->cop_line = copline; |
760ac839 | 3263 | warn(const_sv ? "Constant subroutine %s redefined" |
68dc0745 | 3264 | : "Subroutine %s redefined", name); |
79072805 LW |
3265 | curcop->cop_line = oldline; |
3266 | } | |
8990e307 | 3267 | SvREFCNT_dec(cv); |
68dc0745 | 3268 | cv = Nullcv; |
79072805 LW |
3269 | } |
3270 | } | |
a0d0e21e | 3271 | if (cv) { /* must reuse cv if autoloaded */ |
4633a7c4 | 3272 | cv_undef(cv); |
44a8e56a | 3273 | CvFLAGS(cv) = CvFLAGS(compcv); |
748a9306 | 3274 | CvOUTSIDE(cv) = CvOUTSIDE(compcv); |
e9a444f0 | 3275 | CvOUTSIDE(compcv) = 0; |
748a9306 | 3276 | CvPADLIST(cv) = CvPADLIST(compcv); |
4aa0a1f7 | 3277 | CvPADLIST(compcv) = 0; |
4633a7c4 LW |
3278 | if (SvREFCNT(compcv) > 1) /* XXX Make closures transit through stub. */ |
3279 | CvOUTSIDE(compcv) = (CV*)SvREFCNT_inc((SV*)cv); | |
748a9306 | 3280 | SvREFCNT_dec(compcv); |
a0d0e21e LW |
3281 | } |
3282 | else { | |
748a9306 | 3283 | cv = compcv; |
44a8e56a | 3284 | if (name) { |
3285 | GvCV(gv) = cv; | |
3286 | GvCVGEN(gv) = 0; | |
3287 | sub_generation++; | |
3288 | } | |
a0d0e21e | 3289 | } |
44a8e56a | 3290 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
79072805 | 3291 | CvFILEGV(cv) = curcop->cop_filegv; |
8990e307 LW |
3292 | CvSTASH(cv) = curstash; |
3293 | ||
3fe9a6f1 | 3294 | if (ps) |
3295 | sv_setpv((SV*)cv, ps); | |
4633a7c4 | 3296 | |
c07a80fd | 3297 | if (error_count) { |
3298 | op_free(block); | |
3299 | block = Nullop; | |
68dc0745 | 3300 | if (name) { |
3301 | char *s = strrchr(name, ':'); | |
3302 | s = s ? s+1 : name; | |
6d4c2119 CS |
3303 | if (strEQ(s, "BEGIN")) { |
3304 | char *not_safe = | |
3305 | "BEGIN not safe after errors--compilation aborted"; | |
3306 | if (in_eval & 4) | |
3307 | croak(not_safe); | |
3308 | else { | |
3309 | /* force display of errors found but not reported */ | |
3310 | sv_catpv(GvSV(errgv), not_safe); | |
3311 | croak("%s", SvPVx(GvSV(errgv), na)); | |
3312 | } | |
3313 | } | |
68dc0745 | 3314 | } |
c07a80fd | 3315 | } |
a0d0e21e | 3316 | if (!block) { |
a0d0e21e LW |
3317 | copline = NOLINE; |
3318 | LEAVE_SCOPE(floor); | |
3319 | return cv; | |
3320 | } | |
3321 | ||
54310121 | 3322 | if (AvFILL(comppad_name) < AvFILL(comppad)) |
3323 | av_store(comppad_name, AvFILL(comppad), Nullsv); | |
a0d0e21e | 3324 | |
54310121 | 3325 | if (CvCLONE(cv)) { |
3326 | SV **namep = AvARRAY(comppad_name); | |
3327 | for (ix = AvFILL(comppad); ix > 0; ix--) { | |
3328 | SV *namesv; | |
3329 | ||
3330 | if (SvIMMORTAL(curpad[ix])) | |
3331 | continue; | |
3332 | /* | |
3333 | * The only things that a clonable function needs in its | |
3334 | * pad are references to outer lexicals and anonymous subs. | |
3335 | * The rest are created anew during cloning. | |
3336 | */ | |
3337 | if (!((namesv = namep[ix]) != Nullsv && | |
3338 | namesv != &sv_undef && | |
3339 | (SvFAKE(namesv) || | |
3340 | *SvPVX(namesv) == '&'))) | |
3341 | { | |
3342 | SvREFCNT_dec(curpad[ix]); | |
3343 | curpad[ix] = Nullsv; | |
3344 | } | |
3345 | } | |
a0d0e21e | 3346 | } |
54310121 | 3347 | else { |
3348 | AV *av = newAV(); /* Will be @_ */ | |
3349 | av_extend(av, 0); | |
3350 | av_store(comppad, 0, (SV*)av); | |
3351 | AvFLAGS(av) = AVf_REIFY; | |
79072805 | 3352 | |
54310121 | 3353 | for (ix = AvFILL(comppad); ix > 0; ix--) { |
3354 | if (SvIMMORTAL(curpad[ix])) | |
3355 | continue; | |
3356 | if (!SvPADMY(curpad[ix])) | |
3357 | SvPADTMP_on(curpad[ix]); | |
3358 | } | |
3359 | } | |
79072805 | 3360 | |
a0d0e21e | 3361 | CvROOT(cv) = newUNOP(OP_LEAVESUB, 0, scalarseq(block)); |
79072805 LW |
3362 | CvSTART(cv) = LINKLIST(CvROOT(cv)); |
3363 | CvROOT(cv)->op_next = 0; | |
3364 | peep(CvSTART(cv)); | |
a6006777 | 3365 | |
44a8e56a | 3366 | if (name) { |
3367 | char *s; | |
3368 | ||
3369 | if (perldb && curstash != debstash) { | |
46fc3d4c | 3370 | SV *sv = NEWSV(0,0); |
44a8e56a | 3371 | SV *tmpstr = sv_newmortal(); |
3372 | static GV *db_postponed; | |
3373 | CV *cv; | |
3374 | HV *hv; | |
3375 | ||
fc36a67e | 3376 | sv_setpvf(sv, "%_:%ld-%ld", |
46fc3d4c | 3377 | GvSV(curcop->cop_filegv), |
3378 | (long)subline, (long)curcop->cop_line); | |
44a8e56a | 3379 | gv_efullname3(tmpstr, gv, Nullch); |
3380 | hv_store(GvHV(DBsub), SvPVX(tmpstr), SvCUR(tmpstr), sv, 0); | |
3381 | if (!db_postponed) { | |
6bbcb22c | 3382 | db_postponed = gv_fetchpv("DB::postponed", GV_ADDMULTI, SVt_PVHV); |
44a8e56a | 3383 | } |
3384 | hv = GvHVn(db_postponed); | |
9607fc9c | 3385 | if (HvFILL(hv) > 0 && hv_exists(hv, SvPVX(tmpstr), SvCUR(tmpstr)) |
3386 | && (cv = GvCV(db_postponed))) { | |
44a8e56a | 3387 | dSP; |
3388 | PUSHMARK(sp); | |
3389 | XPUSHs(tmpstr); | |
3390 | PUTBACK; | |
3391 | perl_call_sv((SV*)cv, G_DISCARD); | |
3392 | } | |
3393 | } | |
3394 | ||
3395 | if ((s = strrchr(name,':'))) | |
28757baa | 3396 | s++; |
3397 | else | |
3398 | s = name; | |
68dc0745 | 3399 | if (strEQ(s, "BEGIN")) { |
2ae324a7 | 3400 | I32 oldscope = scopestack_ix; |
28757baa | 3401 | ENTER; |
3402 | SAVESPTR(compiling.cop_filegv); | |
3403 | SAVEI16(compiling.cop_line); | |
3404 | SAVEI32(perldb); | |
3405 | save_svref(&rs); | |
3406 | sv_setsv(rs, nrs); | |
3407 | ||
3408 | if (!beginav) | |
3409 | beginav = newAV(); | |
3410 | DEBUG_x( dump_sub(gv) ); | |
3411 | av_push(beginav, (SV *)cv); | |
3412 | GvCV(gv) = 0; | |
68dc0745 | 3413 | call_list(oldscope, beginav); |
a6006777 | 3414 | |
28757baa | 3415 | curcop = &compiling; |
3416 | LEAVE; | |
3417 | } | |
3418 | else if (strEQ(s, "END") && !error_count) { | |
3419 | if (!endav) | |
3420 | endav = newAV(); | |
3421 | av_unshift(endav, 1); | |
3422 | av_store(endav, 0, (SV *)cv); | |
3423 | GvCV(gv) = 0; | |
3424 | } | |
93a17b20 | 3425 | } |
a6006777 | 3426 | |
aa689395 | 3427 | done: |
a6006777 | 3428 | copline = NOLINE; |
3429 | LEAVE_SCOPE(floor); | |
a0d0e21e | 3430 | return cv; |
79072805 LW |
3431 | } |
3432 | ||
a0d0e21e LW |
3433 | #ifdef DEPRECATED |
3434 | CV * | |
463ee0b2 | 3435 | newXSUB(name, ix, subaddr, filename) |
79072805 LW |
3436 | char *name; |
3437 | I32 ix; | |
3438 | I32 (*subaddr)(); | |
3439 | char *filename; | |
3440 | { | |
a0d0e21e | 3441 | CV* cv = newXS(name, (void(*)())subaddr, filename); |
a5f75d66 | 3442 | CvOLDSTYLE_on(cv); |
a0d0e21e LW |
3443 | CvXSUBANY(cv).any_i32 = ix; |
3444 | return cv; | |
3445 | } | |
3446 | #endif | |
3447 | ||
3448 | CV * | |
3449 | newXS(name, subaddr, filename) | |
3450 | char *name; | |
3451 | void (*subaddr) _((CV*)); | |
3452 | char *filename; | |
3453 | { | |
44a8e56a | 3454 | GV *gv = gv_fetchpv(name ? name : "__ANON__", GV_ADDMULTI, SVt_PVCV); |
79072805 | 3455 | register CV *cv; |
44a8e56a | 3456 | |
3457 | if (cv = (name ? GvCV(gv) : Nullcv)) { | |
3458 | if (GvCVGEN(gv)) { | |
3459 | /* just a cached method */ | |
3460 | SvREFCNT_dec(cv); | |
3461 | cv = 0; | |
3462 | } | |
3463 | else if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
3464 | /* already defined (or promised) */ | |
a0d0e21e LW |
3465 | if (dowarn) { |
3466 | line_t oldline = curcop->cop_line; | |
a0d0e21e LW |
3467 | curcop->cop_line = copline; |
3468 | warn("Subroutine %s redefined",name); | |
3469 | curcop->cop_line = oldline; | |
3470 | } | |
3471 | SvREFCNT_dec(cv); | |
3472 | cv = 0; | |
79072805 | 3473 | } |
79072805 | 3474 | } |
44a8e56a | 3475 | |
3476 | if (cv) /* must reuse cv if autoloaded */ | |
3477 | cv_undef(cv); | |
a0d0e21e LW |
3478 | else { |
3479 | cv = (CV*)NEWSV(1105,0); | |
3480 | sv_upgrade((SV *)cv, SVt_PVCV); | |
44a8e56a | 3481 | if (name) { |
3482 | GvCV(gv) = cv; | |
3483 | GvCVGEN(gv) = 0; | |
3484 | sub_generation++; | |
3485 | } | |
a0d0e21e | 3486 | } |
44a8e56a | 3487 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
79072805 | 3488 | CvFILEGV(cv) = gv_fetchfile(filename); |
a0d0e21e | 3489 | CvXSUB(cv) = subaddr; |
44a8e56a | 3490 | |
28757baa | 3491 | if (name) { |
3492 | char *s = strrchr(name,':'); | |
3493 | if (s) | |
3494 | s++; | |
3495 | else | |
3496 | s = name; | |
3497 | if (strEQ(s, "BEGIN")) { | |
3498 | if (!beginav) | |
3499 | beginav = newAV(); | |
44a8e56a | 3500 | av_push(beginav, (SV *)cv); |
3501 | GvCV(gv) = 0; | |
28757baa | 3502 | } |
3503 | else if (strEQ(s, "END")) { | |
3504 | if (!endav) | |
3505 | endav = newAV(); | |
3506 | av_unshift(endav, 1); | |
44a8e56a | 3507 | av_store(endav, 0, (SV *)cv); |
3508 | GvCV(gv) = 0; | |
28757baa | 3509 | } |
3510 | } | |
44a8e56a | 3511 | else |
a5f75d66 | 3512 | CvANON_on(cv); |
44a8e56a | 3513 | |
a0d0e21e | 3514 | return cv; |
79072805 LW |
3515 | } |
3516 | ||
3517 | void | |
3518 | newFORM(floor,op,block) | |
3519 | I32 floor; | |
3520 | OP *op; | |
3521 | OP *block; | |
3522 | { | |
3523 | register CV *cv; | |
3524 | char *name; | |
3525 | GV *gv; | |
a0d0e21e | 3526 | I32 ix; |
79072805 LW |
3527 | |
3528 | if (op) | |
463ee0b2 | 3529 | name = SvPVx(cSVOP->op_sv, na); |
79072805 LW |
3530 | else |
3531 | name = "STDOUT"; | |
85e6fe83 | 3532 | gv = gv_fetchpv(name,TRUE, SVt_PVFM); |
a5f75d66 | 3533 | GvMULTI_on(gv); |
79072805 LW |
3534 | if (cv = GvFORM(gv)) { |
3535 | if (dowarn) { | |
3536 | line_t oldline = curcop->cop_line; | |
3537 | ||
3538 | curcop->cop_line = copline; | |
3539 | warn("Format %s redefined",name); | |
3540 | curcop->cop_line = oldline; | |
3541 | } | |
8990e307 | 3542 | SvREFCNT_dec(cv); |
79072805 | 3543 | } |
748a9306 | 3544 | cv = compcv; |
79072805 | 3545 | GvFORM(gv) = cv; |
44a8e56a | 3546 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
79072805 LW |
3547 | CvFILEGV(cv) = curcop->cop_filegv; |
3548 | ||
a0d0e21e | 3549 | for (ix = AvFILL(comppad); ix > 0; ix--) { |
44a8e56a | 3550 | if (!SvPADMY(curpad[ix]) && !SvIMMORTAL(curpad[ix])) |
a0d0e21e LW |
3551 | SvPADTMP_on(curpad[ix]); |
3552 | } | |
3553 | ||
79072805 LW |
3554 | CvROOT(cv) = newUNOP(OP_LEAVEWRITE, 0, scalarseq(block)); |
3555 | CvSTART(cv) = LINKLIST(CvROOT(cv)); | |
3556 | CvROOT(cv)->op_next = 0; | |
3557 | peep(CvSTART(cv)); | |
79072805 LW |
3558 | op_free(op); |
3559 | copline = NOLINE; | |
8990e307 | 3560 | LEAVE_SCOPE(floor); |
79072805 LW |
3561 | } |
3562 | ||
3563 | OP * | |
79072805 LW |
3564 | newANONLIST(op) |
3565 | OP* op; | |
3566 | { | |
93a17b20 | 3567 | return newUNOP(OP_REFGEN, 0, |
a0d0e21e | 3568 | mod(list(convert(OP_ANONLIST, 0, op)), OP_REFGEN)); |
79072805 LW |
3569 | } |
3570 | ||
3571 | OP * | |
3572 | newANONHASH(op) | |
3573 | OP* op; | |
3574 | { | |
93a17b20 | 3575 | return newUNOP(OP_REFGEN, 0, |
a0d0e21e LW |
3576 | mod(list(convert(OP_ANONHASH, 0, op)), OP_REFGEN)); |
3577 | } | |
3578 | ||
3579 | OP * | |
4633a7c4 | 3580 | newANONSUB(floor, proto, block) |
a0d0e21e | 3581 | I32 floor; |
4633a7c4 | 3582 | OP *proto; |
a0d0e21e LW |
3583 | OP *block; |
3584 | { | |
3585 | return newUNOP(OP_REFGEN, 0, | |
4633a7c4 | 3586 | newSVOP(OP_ANONCODE, 0, (SV*)newSUB(floor, 0, proto, block))); |
79072805 LW |
3587 | } |
3588 | ||
3589 | OP * | |
3590 | oopsAV(o) | |
3591 | OP *o; | |
3592 | { | |
ed6116ce LW |
3593 | switch (o->op_type) { |
3594 | case OP_PADSV: | |
3595 | o->op_type = OP_PADAV; | |
3596 | o->op_ppaddr = ppaddr[OP_PADAV]; | |
3597 | return ref(newUNOP(OP_RV2AV, 0, scalar(o)), OP_RV2AV); | |
3598 | ||
3599 | case OP_RV2SV: | |
79072805 LW |
3600 | o->op_type = OP_RV2AV; |
3601 | o->op_ppaddr = ppaddr[OP_RV2AV]; | |
3602 | ref(o, OP_RV2AV); | |
ed6116ce LW |
3603 | break; |
3604 | ||
3605 | default: | |
79072805 | 3606 | warn("oops: oopsAV"); |
ed6116ce LW |
3607 | break; |
3608 | } | |
79072805 LW |
3609 | return o; |
3610 | } | |
3611 | ||
3612 | OP * | |
3613 | oopsHV(o) | |
3614 | OP *o; | |
3615 | { | |
ed6116ce LW |
3616 | switch (o->op_type) { |
3617 | case OP_PADSV: | |
3618 | case OP_PADAV: | |
3619 | o->op_type = OP_PADHV; | |
3620 | o->op_ppaddr = ppaddr[OP_PADHV]; | |
3621 | return ref(newUNOP(OP_RV2HV, 0, scalar(o)), OP_RV2HV); | |
3622 | ||
3623 | case OP_RV2SV: | |
3624 | case OP_RV2AV: | |
79072805 LW |
3625 | o->op_type = OP_RV2HV; |
3626 | o->op_ppaddr = ppaddr[OP_RV2HV]; | |
3627 | ref(o, OP_RV2HV); | |
ed6116ce LW |
3628 | break; |
3629 | ||
3630 | default: | |
79072805 | 3631 | warn("oops: oopsHV"); |
ed6116ce LW |
3632 | break; |
3633 | } | |
79072805 LW |
3634 | return o; |
3635 | } | |
3636 | ||
3637 | OP * | |
3638 | newAVREF(o) | |
3639 | OP *o; | |
3640 | { | |
ed6116ce LW |
3641 | if (o->op_type == OP_PADANY) { |
3642 | o->op_type = OP_PADAV; | |
3643 | o->op_ppaddr = ppaddr[OP_PADAV]; | |
93a17b20 | 3644 | return o; |
ed6116ce | 3645 | } |
79072805 LW |
3646 | return newUNOP(OP_RV2AV, 0, scalar(o)); |
3647 | } | |
3648 | ||
3649 | OP * | |
a0d0e21e LW |
3650 | newGVREF(type,o) |
3651 | I32 type; | |
79072805 LW |
3652 | OP *o; |
3653 | { | |
a0d0e21e LW |
3654 | if (type == OP_MAPSTART) |
3655 | return newUNOP(OP_NULL, 0, o); | |
748a9306 | 3656 | return ref(newUNOP(OP_RV2GV, OPf_REF, o), type); |
79072805 LW |
3657 | } |
3658 | ||
3659 | OP * | |
3660 | newHVREF(o) | |
3661 | OP *o; | |
3662 | { | |
ed6116ce LW |
3663 | if (o->op_type == OP_PADANY) { |
3664 | o->op_type = OP_PADHV; | |
3665 | o->op_ppaddr = ppaddr[OP_PADHV]; | |
93a17b20 | 3666 | return o; |
ed6116ce | 3667 | } |
79072805 LW |
3668 | return newUNOP(OP_RV2HV, 0, scalar(o)); |
3669 | } | |
3670 | ||
3671 | OP * | |
3672 | oopsCV(o) | |
3673 | OP *o; | |
3674 | { | |
463ee0b2 | 3675 | croak("NOT IMPL LINE %d",__LINE__); |
79072805 LW |
3676 | /* STUB */ |
3677 | return o; | |
3678 | } | |
3679 | ||
3680 | OP * | |
c07a80fd | 3681 | newCVREF(flags, o) |
3682 | I32 flags; | |
79072805 LW |
3683 | OP *o; |
3684 | { | |
c07a80fd | 3685 | return newUNOP(OP_RV2CV, flags, scalar(o)); |
79072805 LW |
3686 | } |
3687 | ||
3688 | OP * | |
3689 | newSVREF(o) | |
3690 | OP *o; | |
3691 | { | |
ed6116ce LW |
3692 | if (o->op_type == OP_PADANY) { |
3693 | o->op_type = OP_PADSV; | |
3694 | o->op_ppaddr = ppaddr[OP_PADSV]; | |
93a17b20 | 3695 | return o; |
ed6116ce | 3696 | } |
79072805 LW |
3697 | return newUNOP(OP_RV2SV, 0, scalar(o)); |
3698 | } | |
3699 | ||
3700 | /* Check routines. */ | |
3701 | ||
3702 | OP * | |
5f05dabc | 3703 | ck_anoncode(op) |
3704 | OP *op; | |
3705 | { | |
178c6305 CS |
3706 | PADOFFSET ix; |
3707 | SV* name; | |
3708 | ||
3709 | name = NEWSV(1106,0); | |
3710 | sv_upgrade(name, SVt_PVNV); | |
3711 | sv_setpvn(name, "&", 1); | |
3712 | SvIVX(name) = -1; | |
3713 | SvNVX(name) = 1; | |
3714 | ix = pad_alloc(op->op_type, SVs_PADMY); | |
3715 | av_store(comppad_name, ix, name); | |
5f05dabc | 3716 | av_store(comppad, ix, cSVOP->op_sv); |
3717 | SvPADMY_on(cSVOP->op_sv); | |
3718 | cSVOP->op_sv = Nullsv; | |
3719 | cSVOP->op_targ = ix; | |
3720 | return op; | |
3721 | } | |
3722 | ||
3723 | OP * | |
55497cff | 3724 | ck_bitop(op) |
3725 | OP *op; | |
3726 | { | |
3727 | op->op_private = hints; | |
3728 | return op; | |
3729 | } | |
3730 | ||
3731 | OP * | |
79072805 LW |
3732 | ck_concat(op) |
3733 | OP *op; | |
3734 | { | |
3735 | if (cUNOP->op_first->op_type == OP_CONCAT) | |
3736 | op->op_flags |= OPf_STACKED; | |
3737 | return op; | |
3738 | } | |
3739 | ||
3740 | OP * | |
a0d0e21e | 3741 | ck_spair(op) |
79072805 LW |
3742 | OP *op; |
3743 | { | |
3744 | if (op->op_flags & OPf_KIDS) { | |
3745 | OP* newop; | |
a0d0e21e | 3746 | OP* kid; |
8ebc5c01 | 3747 | OPCODE type = op->op_type; |
3748 | op = modkids(ck_fun(op), type); | |
a0d0e21e LW |
3749 | kid = cUNOP->op_first; |
3750 | newop = kUNOP->op_first->op_sibling; | |
3751 | if (newop && | |
3752 | (newop->op_sibling || | |
3753 | !(opargs[newop->op_type] & OA_RETSCALAR) || | |
3754 | newop->op_type == OP_PADAV || newop->op_type == OP_PADHV || | |
3755 | newop->op_type == OP_RV2AV || newop->op_type == OP_RV2HV)) { | |
3756 | ||
79072805 | 3757 | return op; |
a0d0e21e LW |
3758 | } |
3759 | op_free(kUNOP->op_first); | |
3760 | kUNOP->op_first = newop; | |
3761 | } | |
3762 | op->op_ppaddr = ppaddr[++op->op_type]; | |
3763 | return ck_fun(op); | |
3764 | } | |
3765 | ||
3766 | OP * | |
3767 | ck_delete(op) | |
3768 | OP *op; | |
3769 | { | |
3770 | op = ck_fun(op); | |
5f05dabc | 3771 | op->op_private = 0; |
a0d0e21e LW |
3772 | if (op->op_flags & OPf_KIDS) { |
3773 | OP *kid = cUNOP->op_first; | |
5f05dabc | 3774 | if (kid->op_type == OP_HSLICE) |
3775 | op->op_private |= OPpSLICE; | |
3776 | else if (kid->op_type != OP_HELEM) | |
3777 | croak("%s argument is not a HASH element or slice", | |
3778 | op_desc[op->op_type]); | |
a0d0e21e | 3779 | null(kid); |
79072805 | 3780 | } |
79072805 LW |
3781 | return op; |
3782 | } | |
3783 | ||
3784 | OP * | |
3785 | ck_eof(op) | |
3786 | OP *op; | |
3787 | { | |
3788 | I32 type = op->op_type; | |
3789 | ||
8990e307 LW |
3790 | if (op->op_flags & OPf_KIDS) { |
3791 | if (cLISTOP->op_first->op_type == OP_STUB) { | |
3792 | op_free(op); | |
3793 | op = newUNOP(type, OPf_SPECIAL, | |
85e6fe83 | 3794 | newGVOP(OP_GV, 0, gv_fetchpv("main'ARGV", TRUE, SVt_PVAV))); |
8990e307 | 3795 | } |
79072805 | 3796 | return ck_fun(op); |
79072805 LW |
3797 | } |
3798 | return op; | |
3799 | } | |
3800 | ||
3801 | OP * | |
3802 | ck_eval(op) | |
3803 | OP *op; | |
3804 | { | |
85e6fe83 | 3805 | hints |= HINT_BLOCK_SCOPE; |
79072805 LW |
3806 | if (op->op_flags & OPf_KIDS) { |
3807 | SVOP *kid = (SVOP*)cUNOP->op_first; | |
3808 | ||
93a17b20 LW |
3809 | if (!kid) { |
3810 | op->op_flags &= ~OPf_KIDS; | |
8990e307 | 3811 | null(op); |
79072805 LW |
3812 | } |
3813 | else if (kid->op_type == OP_LINESEQ) { | |
3814 | LOGOP *enter; | |
3815 | ||
3816 | kid->op_next = op->op_next; | |
3817 | cUNOP->op_first = 0; | |
3818 | op_free(op); | |
3819 | ||
3820 | Newz(1101, enter, 1, LOGOP); | |
3821 | enter->op_type = OP_ENTERTRY; | |
3822 | enter->op_ppaddr = ppaddr[OP_ENTERTRY]; | |
3823 | enter->op_private = 0; | |
3824 | ||
3825 | /* establish postfix order */ | |
3826 | enter->op_next = (OP*)enter; | |
3827 | ||
463ee0b2 | 3828 | op = prepend_elem(OP_LINESEQ, (OP*)enter, (OP*)kid); |
79072805 LW |
3829 | op->op_type = OP_LEAVETRY; |
3830 | op->op_ppaddr = ppaddr[OP_LEAVETRY]; | |
3831 | enter->op_other = op; | |
3832 | return op; | |
3833 | } | |
3834 | } | |
3835 | else { | |
3836 | op_free(op); | |
3837 | op = newUNOP(OP_ENTEREVAL, 0, newSVREF(newGVOP(OP_GV, 0, defgv))); | |
3838 | } | |
a0d0e21e | 3839 | op->op_targ = (PADOFFSET)hints; |
79072805 LW |
3840 | return op; |
3841 | } | |
3842 | ||
3843 | OP * | |
3844 | ck_exec(op) | |
3845 | OP *op; | |
3846 | { | |
3847 | OP *kid; | |
79072805 | 3848 | if (op->op_flags & OPf_STACKED) { |
463ee0b2 | 3849 | op = ck_fun(op); |
79072805 | 3850 | kid = cUNOP->op_first->op_sibling; |
8990e307 LW |
3851 | if (kid->op_type == OP_RV2GV) |
3852 | null(kid); | |
79072805 | 3853 | } |
463ee0b2 LW |
3854 | else |
3855 | op = listkids(op); | |
79072805 LW |
3856 | return op; |
3857 | } | |
3858 | ||
3859 | OP * | |
5f05dabc | 3860 | ck_exists(op) |
3861 | OP *op; | |
3862 | { | |
3863 | op = ck_fun(op); | |
3864 | if (op->op_flags & OPf_KIDS) { | |
3865 | OP *kid = cUNOP->op_first; | |
3866 | if (kid->op_type != OP_HELEM) | |
3867 | croak("%s argument is not a HASH element", op_desc[op->op_type]); | |
3868 | null(kid); | |
3869 | } | |
3870 | return op; | |
3871 | } | |
3872 | ||
3873 | OP * | |
79072805 LW |
3874 | ck_gvconst(o) |
3875 | register OP *o; | |
3876 | { | |
3877 | o = fold_constants(o); | |
3878 | if (o->op_type == OP_CONST) | |
3879 | o->op_type = OP_GV; | |
3880 | return o; | |
3881 | } | |
3882 | ||
3883 | OP * | |
3884 | ck_rvconst(op) | |
3885 | register OP *op; | |
3886 | { | |
3887 | SVOP *kid = (SVOP*)cUNOP->op_first; | |
85e6fe83 | 3888 | |
c07a80fd | 3889 | op->op_private |= (hints & HINT_STRICT_REFS); |
79072805 | 3890 | if (kid->op_type == OP_CONST) { |
44a8e56a | 3891 | char *name; |
3892 | int iscv; | |
3893 | GV *gv; | |
3894 | ||
3895 | name = SvPV(kid->op_sv, na); | |
3896 | if ((hints & HINT_STRICT_REFS) && (kid->op_private & OPpCONST_BARE)) { | |
3897 | char *badthing = Nullch; | |
3898 | switch (op->op_type) { | |
3899 | case OP_RV2SV: | |
3900 | badthing = "a SCALAR"; | |
3901 | break; | |
3902 | case OP_RV2AV: | |
3903 | badthing = "an ARRAY"; | |
3904 | break; | |
3905 | case OP_RV2HV: | |
3906 | badthing = "a HASH"; | |
3907 | break; | |
3908 | } | |
3909 | if (badthing) | |
3910 | croak( | |
3911 | "Can't use bareword (\"%s\") as %s ref while \"strict refs\" in use", | |
3912 | name, badthing); | |
3913 | } | |
79072805 | 3914 | kid->op_type = OP_GV; |
44a8e56a | 3915 | iscv = (op->op_type == OP_RV2CV) * 2; |
a0d0e21e | 3916 | for (gv = 0; !gv; iscv++) { |
748a9306 LW |
3917 | /* |
3918 | * This is a little tricky. We only want to add the symbol if we | |
3919 | * didn't add it in the lexer. Otherwise we get duplicate strict | |
3920 | * warnings. But if we didn't add it in the lexer, we must at | |
3921 | * least pretend like we wanted to add it even if it existed before, | |
3922 | * or we get possible typo warnings. OPpCONST_ENTERED says | |
3923 | * whether the lexer already added THIS instance of this symbol. | |
3924 | */ | |
44a8e56a | 3925 | gv = gv_fetchpv(name, |
748a9306 | 3926 | iscv | !(kid->op_private & OPpCONST_ENTERED), |
a0d0e21e LW |
3927 | iscv |
3928 | ? SVt_PVCV | |
3929 | : op->op_type == OP_RV2SV | |
3930 | ? SVt_PV | |
3931 | : op->op_type == OP_RV2AV | |
3932 | ? SVt_PVAV | |
3933 | : op->op_type == OP_RV2HV | |
3934 | ? SVt_PVHV | |
3935 | : SVt_PVGV); | |
3936 | } | |
adbc6bb1 | 3937 | SvREFCNT_dec(kid->op_sv); |
a0d0e21e | 3938 | kid->op_sv = SvREFCNT_inc(gv); |
79072805 LW |
3939 | } |
3940 | return op; | |
3941 | } | |
3942 | ||
3943 | OP * | |
79072805 LW |
3944 | ck_ftst(op) |
3945 | OP *op; | |
3946 | { | |
3947 | I32 type = op->op_type; | |
3948 | ||
a0d0e21e | 3949 | if (op->op_flags & OPf_REF) |
79072805 LW |
3950 | return op; |
3951 | ||
3952 | if (op->op_flags & OPf_KIDS) { | |
3953 | SVOP *kid = (SVOP*)cUNOP->op_first; | |
3954 | ||
3955 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
a0d0e21e | 3956 | OP *newop = newGVOP(type, OPf_REF, |
85e6fe83 | 3957 | gv_fetchpv(SvPVx(kid->op_sv, na), TRUE, SVt_PVIO)); |
79072805 LW |
3958 | op_free(op); |
3959 | return newop; | |
3960 | } | |
3961 | } | |
3962 | else { | |
3963 | op_free(op); | |
3964 | if (type == OP_FTTTY) | |
a0d0e21e | 3965 | return newGVOP(type, OPf_REF, gv_fetchpv("main'STDIN", TRUE, |
85e6fe83 | 3966 | SVt_PVIO)); |
79072805 LW |
3967 | else |
3968 | return newUNOP(type, 0, newSVREF(newGVOP(OP_GV, 0, defgv))); | |
3969 | } | |
3970 | return op; | |
3971 | } | |
3972 | ||
3973 | OP * | |
3974 | ck_fun(op) | |
3975 | OP *op; | |
3976 | { | |
3977 | register OP *kid; | |
3978 | OP **tokid; | |
3979 | OP *sibl; | |
3980 | I32 numargs = 0; | |
a0d0e21e LW |
3981 | int type = op->op_type; |
3982 | register I32 oa = opargs[type] >> OASHIFT; | |
79072805 LW |
3983 | |
3984 | if (op->op_flags & OPf_STACKED) { | |
3985 | if ((oa & OA_OPTIONAL) && (oa >> 4) && !((oa >> 4) & OA_OPTIONAL)) | |
3986 | oa &= ~OA_OPTIONAL; | |
3987 | else | |
3988 | return no_fh_allowed(op); | |
3989 | } | |
3990 | ||
3991 | if (op->op_flags & OPf_KIDS) { | |
3992 | tokid = &cLISTOP->op_first; | |
3993 | kid = cLISTOP->op_first; | |
8990e307 LW |
3994 | if (kid->op_type == OP_PUSHMARK || |
3995 | kid->op_type == OP_NULL && kid->op_targ == OP_PUSHMARK) | |
3996 | { | |
79072805 LW |
3997 | tokid = &kid->op_sibling; |
3998 | kid = kid->op_sibling; | |
3999 | } | |
a0d0e21e LW |
4000 | if (!kid && opargs[type] & OA_DEFGV) |
4001 | *tokid = kid = newSVREF(newGVOP(OP_GV, 0, defgv)); | |
79072805 LW |
4002 | |
4003 | while (oa && kid) { | |
4004 | numargs++; | |
4005 | sibl = kid->op_sibling; | |
4006 | switch (oa & 7) { | |
4007 | case OA_SCALAR: | |
4008 | scalar(kid); | |
4009 | break; | |
4010 | case OA_LIST: | |
4011 | if (oa < 16) { | |
4012 | kid = 0; | |
4013 | continue; | |
4014 | } | |
4015 | else | |
4016 | list(kid); | |
4017 | break; | |
4018 | case OA_AVREF: | |
4019 | if (kid->op_type == OP_CONST && | |
4020 | (kid->op_private & OPpCONST_BARE)) { | |
463ee0b2 | 4021 | char *name = SvPVx(((SVOP*)kid)->op_sv, na); |
79072805 | 4022 | OP *newop = newAVREF(newGVOP(OP_GV, 0, |
85e6fe83 | 4023 | gv_fetchpv(name, TRUE, SVt_PVAV) )); |
463ee0b2 | 4024 | if (dowarn) |
ff0cee69 | 4025 | warn("Array @%s missing the @ in argument %ld of %s()", |
4026 | name, (long)numargs, op_desc[type]); | |
79072805 LW |
4027 | op_free(kid); |
4028 | kid = newop; | |
4029 | kid->op_sibling = sibl; | |
4030 | *tokid = kid; | |
4031 | } | |
8990e307 | 4032 | else if (kid->op_type != OP_RV2AV && kid->op_type != OP_PADAV) |
c07a80fd | 4033 | bad_type(numargs, "array", op_desc[op->op_type], kid); |
a0d0e21e | 4034 | mod(kid, type); |
79072805 LW |
4035 | break; |
4036 | case OA_HVREF: | |
4037 | if (kid->op_type == OP_CONST && | |
4038 | (kid->op_private & OPpCONST_BARE)) { | |
463ee0b2 | 4039 | char *name = SvPVx(((SVOP*)kid)->op_sv, na); |
79072805 | 4040 | OP *newop = newHVREF(newGVOP(OP_GV, 0, |
85e6fe83 | 4041 | gv_fetchpv(name, TRUE, SVt_PVHV) )); |
463ee0b2 | 4042 | if (dowarn) |
ff0cee69 | 4043 | warn("Hash %%%s missing the %% in argument %ld of %s()", |
4044 | name, (long)numargs, op_desc[type]); | |
79072805 LW |
4045 | op_free(kid); |
4046 | kid = newop; | |
4047 | kid->op_sibling = sibl; | |
4048 | *tokid = kid; | |
4049 | } | |
8990e307 | 4050 | else if (kid->op_type != OP_RV2HV && kid->op_type != OP_PADHV) |
c07a80fd | 4051 | bad_type(numargs, "hash", op_desc[op->op_type], kid); |
a0d0e21e | 4052 | mod(kid, type); |
79072805 LW |
4053 | break; |
4054 | case OA_CVREF: | |
4055 | { | |
a0d0e21e | 4056 | OP *newop = newUNOP(OP_NULL, 0, kid); |
79072805 LW |
4057 | kid->op_sibling = 0; |
4058 | linklist(kid); | |
4059 | newop->op_next = newop; | |
4060 | kid = newop; | |
4061 | kid->op_sibling = sibl; | |
4062 | *tokid = kid; | |
4063 | } | |
4064 | break; | |
4065 | case OA_FILEREF: | |
4066 | if (kid->op_type != OP_GV) { | |
4067 | if (kid->op_type == OP_CONST && | |
4068 | (kid->op_private & OPpCONST_BARE)) { | |
4069 | OP *newop = newGVOP(OP_GV, 0, | |
85e6fe83 LW |
4070 | gv_fetchpv(SvPVx(((SVOP*)kid)->op_sv, na), TRUE, |
4071 | SVt_PVIO) ); | |
79072805 LW |
4072 | op_free(kid); |
4073 | kid = newop; | |
4074 | } | |
4075 | else { | |
4076 | kid->op_sibling = 0; | |
4077 | kid = newUNOP(OP_RV2GV, 0, scalar(kid)); | |
4078 | } | |
4079 | kid->op_sibling = sibl; | |
4080 | *tokid = kid; | |
4081 | } | |
4082 | scalar(kid); | |
4083 | break; | |
4084 | case OA_SCALARREF: | |
a0d0e21e | 4085 | mod(scalar(kid), type); |
79072805 LW |
4086 | break; |
4087 | } | |
4088 | oa >>= 4; | |
4089 | tokid = &kid->op_sibling; | |
4090 | kid = kid->op_sibling; | |
4091 | } | |
c07a80fd | 4092 | op->op_private |= numargs; |
79072805 | 4093 | if (kid) |
c07a80fd | 4094 | return too_many_arguments(op,op_desc[op->op_type]); |
79072805 LW |
4095 | listkids(op); |
4096 | } | |
a0d0e21e LW |
4097 | else if (opargs[type] & OA_DEFGV) { |
4098 | op_free(op); | |
4099 | return newUNOP(type, 0, newSVREF(newGVOP(OP_GV, 0, defgv))); | |
4100 | } | |
4101 | ||
79072805 LW |
4102 | if (oa) { |
4103 | while (oa & OA_OPTIONAL) | |
4104 | oa >>= 4; | |
4105 | if (oa && oa != OA_LIST) | |
c07a80fd | 4106 | return too_few_arguments(op,op_desc[op->op_type]); |
79072805 LW |
4107 | } |
4108 | return op; | |
4109 | } | |
4110 | ||
4111 | OP * | |
4112 | ck_glob(op) | |
4113 | OP *op; | |
4114 | { | |
b1cb66bf | 4115 | GV *gv = gv_fetchpv("glob", FALSE, SVt_PVCV); |
4116 | ||
4117 | if (gv && GvIMPORTED_CV(gv)) { | |
46fc3d4c | 4118 | static int glob_index; |
4119 | ||
4120 | append_elem(OP_GLOB, op, | |
4121 | newSVOP(OP_CONST, 0, newSViv(glob_index++))); | |
b1cb66bf | 4122 | op->op_type = OP_LIST; |
4123 | op->op_ppaddr = ppaddr[OP_LIST]; | |
46fc3d4c | 4124 | ((LISTOP*)op)->op_first->op_type = OP_PUSHMARK; |
4125 | ((LISTOP*)op)->op_first->op_ppaddr = ppaddr[OP_PUSHMARK]; | |
b1cb66bf | 4126 | op = newUNOP(OP_ENTERSUB, OPf_STACKED, |
4127 | append_elem(OP_LIST, op, | |
4128 | scalar(newUNOP(OP_RV2CV, 0, | |
4129 | newGVOP(OP_GV, 0, gv))))); | |
4130 | return ck_subr(op); | |
4131 | } | |
0a753a76 | 4132 | if ((op->op_flags & OPf_KIDS) && !cLISTOP->op_first->op_sibling) |
4133 | append_elem(OP_GLOB, op, newSVREF(newGVOP(OP_GV, 0, defgv))); | |
b1cb66bf | 4134 | gv = newGVgen("main"); |
a0d0e21e | 4135 | gv_IOadd(gv); |
79072805 LW |
4136 | append_elem(OP_GLOB, op, newGVOP(OP_GV, 0, gv)); |
4137 | scalarkids(op); | |
a0d0e21e | 4138 | return ck_fun(op); |
79072805 LW |
4139 | } |
4140 | ||
4141 | OP * | |
4142 | ck_grep(op) | |
4143 | OP *op; | |
4144 | { | |
4145 | LOGOP *gwop; | |
4146 | OP *kid; | |
a0d0e21e | 4147 | OPCODE type = op->op_type == OP_GREPSTART ? OP_GREPWHILE : OP_MAPWHILE; |
79072805 | 4148 | |
a0d0e21e LW |
4149 | op->op_ppaddr = ppaddr[OP_GREPSTART]; |
4150 | Newz(1101, gwop, 1, LOGOP); | |
4151 | ||
93a17b20 | 4152 | if (op->op_flags & OPf_STACKED) { |
a0d0e21e | 4153 | OP* k; |
93a17b20 | 4154 | op = ck_sort(op); |
8e07c86e | 4155 | kid = cLISTOP->op_first->op_sibling; |
a0d0e21e LW |
4156 | for (k = cLISTOP->op_first->op_sibling->op_next; k; k = k->op_next) { |
4157 | kid = k; | |
4158 | } | |
4159 | kid->op_next = (OP*)gwop; | |
93a17b20 LW |
4160 | op->op_flags &= ~OPf_STACKED; |
4161 | } | |
a0d0e21e LW |
4162 | kid = cLISTOP->op_first->op_sibling; |
4163 | if (type == OP_MAPWHILE) | |
4164 | list(kid); | |
4165 | else | |
4166 | scalar(kid); | |
79072805 LW |
4167 | op = ck_fun(op); |
4168 | if (error_count) | |
4169 | return op; | |
a0d0e21e | 4170 | kid = cLISTOP->op_first->op_sibling; |
79072805 | 4171 | if (kid->op_type != OP_NULL) |
463ee0b2 | 4172 | croak("panic: ck_grep"); |
79072805 LW |
4173 | kid = kUNOP->op_first; |
4174 | ||
a0d0e21e LW |
4175 | gwop->op_type = type; |
4176 | gwop->op_ppaddr = ppaddr[type]; | |
4177 | gwop->op_first = listkids(op); | |
79072805 LW |
4178 | gwop->op_flags |= OPf_KIDS; |
4179 | gwop->op_private = 1; | |
4180 | gwop->op_other = LINKLIST(kid); | |
a0d0e21e | 4181 | gwop->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 LW |
4182 | kid->op_next = (OP*)gwop; |
4183 | ||
a0d0e21e LW |
4184 | kid = cLISTOP->op_first->op_sibling; |
4185 | if (!kid || !kid->op_sibling) | |
c07a80fd | 4186 | return too_few_arguments(op,op_desc[op->op_type]); |
a0d0e21e LW |
4187 | for (kid = kid->op_sibling; kid; kid = kid->op_sibling) |
4188 | mod(kid, OP_GREPSTART); | |
4189 | ||
79072805 LW |
4190 | return (OP*)gwop; |
4191 | } | |
4192 | ||
4193 | OP * | |
4194 | ck_index(op) | |
4195 | OP *op; | |
4196 | { | |
4197 | if (op->op_flags & OPf_KIDS) { | |
4198 | OP *kid = cLISTOP->op_first->op_sibling; /* get past pushmark */ | |
4199 | if (kid && kid->op_type == OP_CONST) | |
bbce6d69 | 4200 | fbm_compile(((SVOP*)kid)->op_sv); |
79072805 LW |
4201 | } |
4202 | return ck_fun(op); | |
4203 | } | |
4204 | ||
4205 | OP * | |
4206 | ck_lengthconst(op) | |
4207 | OP *op; | |
4208 | { | |
4209 | /* XXX length optimization goes here */ | |
a0d0e21e | 4210 | return ck_fun(op); |
79072805 LW |
4211 | } |
4212 | ||
4213 | OP * | |
4214 | ck_lfun(op) | |
4215 | OP *op; | |
4216 | { | |
8ebc5c01 | 4217 | OPCODE type = op->op_type; |
4218 | return modkids(ck_fun(op), type); | |
79072805 LW |
4219 | } |
4220 | ||
4221 | OP * | |
8990e307 LW |
4222 | ck_rfun(op) |
4223 | OP *op; | |
4224 | { | |
8ebc5c01 | 4225 | OPCODE type = op->op_type; |
4226 | return refkids(ck_fun(op), type); | |
8990e307 LW |
4227 | } |
4228 | ||
4229 | OP * | |
79072805 LW |
4230 | ck_listiob(op) |
4231 | OP *op; | |
4232 | { | |
4233 | register OP *kid; | |
4234 | ||
4235 | kid = cLISTOP->op_first; | |
4236 | if (!kid) { | |
8990e307 | 4237 | op = force_list(op); |
79072805 LW |
4238 | kid = cLISTOP->op_first; |
4239 | } | |
4240 | if (kid->op_type == OP_PUSHMARK) | |
4241 | kid = kid->op_sibling; | |
4242 | if (kid && op->op_flags & OPf_STACKED) | |
4243 | kid = kid->op_sibling; | |
4244 | else if (kid && !kid->op_sibling) { /* print HANDLE; */ | |
4245 | if (kid->op_type == OP_CONST && kid->op_private & OPpCONST_BARE) { | |
4246 | op->op_flags |= OPf_STACKED; /* make it a filehandle */ | |
748a9306 | 4247 | kid = newUNOP(OP_RV2GV, OPf_REF, scalar(kid)); |
79072805 LW |
4248 | cLISTOP->op_first->op_sibling = kid; |
4249 | cLISTOP->op_last = kid; | |
4250 | kid = kid->op_sibling; | |
4251 | } | |
4252 | } | |
4253 | ||
4254 | if (!kid) | |
4255 | append_elem(op->op_type, op, newSVREF(newGVOP(OP_GV, 0, defgv)) ); | |
4256 | ||
bbce6d69 | 4257 | op = listkids(op); |
4258 | ||
4259 | op->op_private = 0; | |
36477c24 | 4260 | #ifdef USE_LOCALE |
bbce6d69 | 4261 | if (hints & HINT_LOCALE) |
4262 | op->op_private |= OPpLOCALE; | |
4263 | #endif | |
4264 | ||
4265 | return op; | |
4266 | } | |
4267 | ||
4268 | OP * | |
4269 | ck_fun_locale(op) | |
4270 | OP *op; | |
4271 | { | |
4272 | op = ck_fun(op); | |
4273 | ||
4274 | op->op_private = 0; | |
36477c24 | 4275 | #ifdef USE_LOCALE |
bbce6d69 | 4276 | if (hints & HINT_LOCALE) |
4277 | op->op_private |= OPpLOCALE; | |
4278 | #endif | |
4279 | ||
4280 | return op; | |
4281 | } | |
4282 | ||
4283 | OP * | |
4284 | ck_scmp(op) | |
4285 | OP *op; | |
4286 | { | |
4287 | op->op_private = 0; | |
36477c24 | 4288 | #ifdef USE_LOCALE |
bbce6d69 | 4289 | if (hints & HINT_LOCALE) |
4290 | op->op_private |= OPpLOCALE; | |
4291 | #endif | |
36477c24 | 4292 | |
bbce6d69 | 4293 | return op; |
79072805 LW |
4294 | } |
4295 | ||
4296 | OP * | |
4297 | ck_match(op) | |
4298 | OP *op; | |
4299 | { | |
c90c0ff4 | 4300 | op->op_private |= OPpRUNTIME; |
79072805 LW |
4301 | return op; |
4302 | } | |
4303 | ||
4304 | OP * | |
4305 | ck_null(op) | |
4306 | OP *op; | |
4307 | { | |
4308 | return op; | |
4309 | } | |
4310 | ||
4311 | OP * | |
4312 | ck_repeat(op) | |
4313 | OP *op; | |
4314 | { | |
4315 | if (cBINOP->op_first->op_flags & OPf_PARENS) { | |
c07a80fd | 4316 | op->op_private |= OPpREPEAT_DOLIST; |
8990e307 | 4317 | cBINOP->op_first = force_list(cBINOP->op_first); |
79072805 LW |
4318 | } |
4319 | else | |
4320 | scalar(op); | |
4321 | return op; | |
4322 | } | |
4323 | ||
4324 | OP * | |
8990e307 LW |
4325 | ck_require(op) |
4326 | OP *op; | |
4327 | { | |
a0d0e21e | 4328 | if (op->op_flags & OPf_KIDS) { /* Shall we supply missing .pm? */ |
8990e307 LW |
4329 | SVOP *kid = (SVOP*)cUNOP->op_first; |
4330 | ||
4331 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
8990e307 | 4332 | char *s; |
a0d0e21e LW |
4333 | for (s = SvPVX(kid->op_sv); *s; s++) { |
4334 | if (*s == ':' && s[1] == ':') { | |
4335 | *s = '/'; | |
1aef975c | 4336 | Move(s+2, s+1, strlen(s+2)+1, char); |
a0d0e21e LW |
4337 | --SvCUR(kid->op_sv); |
4338 | } | |
8990e307 | 4339 | } |
a0d0e21e | 4340 | sv_catpvn(kid->op_sv, ".pm", 3); |
8990e307 LW |
4341 | } |
4342 | } | |
4343 | return ck_fun(op); | |
4344 | } | |
4345 | ||
4346 | OP * | |
79072805 LW |
4347 | ck_retarget(op) |
4348 | OP *op; | |
4349 | { | |
463ee0b2 | 4350 | croak("NOT IMPL LINE %d",__LINE__); |
79072805 LW |
4351 | /* STUB */ |
4352 | return op; | |
4353 | } | |
4354 | ||
4355 | OP * | |
4356 | ck_select(op) | |
4357 | OP *op; | |
4358 | { | |
c07a80fd | 4359 | OP* kid; |
79072805 | 4360 | if (op->op_flags & OPf_KIDS) { |
c07a80fd | 4361 | kid = cLISTOP->op_first->op_sibling; /* get past pushmark */ |
2304df62 | 4362 | if (kid && kid->op_sibling) { |
79072805 LW |
4363 | op->op_type = OP_SSELECT; |
4364 | op->op_ppaddr = ppaddr[OP_SSELECT]; | |
4365 | op = ck_fun(op); | |
4366 | return fold_constants(op); | |
4367 | } | |
4368 | } | |
c07a80fd | 4369 | op = ck_fun(op); |
4370 | kid = cLISTOP->op_first->op_sibling; /* get past pushmark */ | |
4371 | if (kid && kid->op_type == OP_RV2GV) | |
4372 | kid->op_private &= ~HINT_STRICT_REFS; | |
4373 | return op; | |
79072805 LW |
4374 | } |
4375 | ||
4376 | OP * | |
4377 | ck_shift(op) | |
4378 | OP *op; | |
4379 | { | |
4380 | I32 type = op->op_type; | |
4381 | ||
4382 | if (!(op->op_flags & OPf_KIDS)) { | |
4383 | op_free(op); | |
4384 | return newUNOP(type, 0, | |
4385 | scalar(newUNOP(OP_RV2AV, 0, | |
b1cb66bf | 4386 | scalar(newGVOP(OP_GV, 0, subline |
4387 | ? defgv | |
4388 | : gv_fetchpv("ARGV", TRUE, SVt_PVAV) ))))); | |
79072805 | 4389 | } |
463ee0b2 | 4390 | return scalar(modkids(ck_fun(op), type)); |
79072805 LW |
4391 | } |
4392 | ||
4393 | OP * | |
4394 | ck_sort(op) | |
4395 | OP *op; | |
4396 | { | |
bbce6d69 | 4397 | op->op_private = 0; |
36477c24 | 4398 | #ifdef USE_LOCALE |
bbce6d69 | 4399 | if (hints & HINT_LOCALE) |
4400 | op->op_private |= OPpLOCALE; | |
4401 | #endif | |
4402 | ||
79072805 LW |
4403 | if (op->op_flags & OPf_STACKED) { |
4404 | OP *kid = cLISTOP->op_first->op_sibling; /* get past pushmark */ | |
463ee0b2 LW |
4405 | OP *k; |
4406 | kid = kUNOP->op_first; /* get past rv2gv */ | |
79072805 | 4407 | |
463ee0b2 | 4408 | if (kid->op_type == OP_SCOPE || kid->op_type == OP_LEAVE) { |
79072805 | 4409 | linklist(kid); |
463ee0b2 LW |
4410 | if (kid->op_type == OP_SCOPE) { |
4411 | k = kid->op_next; | |
4412 | kid->op_next = 0; | |
79072805 | 4413 | } |
463ee0b2 | 4414 | else if (kid->op_type == OP_LEAVE) { |
748a9306 LW |
4415 | if (op->op_type == OP_SORT) { |
4416 | null(kid); /* wipe out leave */ | |
4417 | kid->op_next = kid; | |
463ee0b2 | 4418 | |
748a9306 LW |
4419 | for (k = kLISTOP->op_first->op_next; k; k = k->op_next) { |
4420 | if (k->op_next == kid) | |
4421 | k->op_next = 0; | |
4422 | } | |
463ee0b2 | 4423 | } |
748a9306 LW |
4424 | else |
4425 | kid->op_next = 0; /* just disconnect the leave */ | |
a0d0e21e | 4426 | k = kLISTOP->op_first; |
463ee0b2 | 4427 | } |
a0d0e21e LW |
4428 | peep(k); |
4429 | ||
463ee0b2 | 4430 | kid = cLISTOP->op_first->op_sibling; /* get past pushmark */ |
8990e307 | 4431 | null(kid); /* wipe out rv2gv */ |
a0d0e21e LW |
4432 | if (op->op_type == OP_SORT) |
4433 | kid->op_next = kid; | |
4434 | else | |
4435 | kid->op_next = k; | |
79072805 LW |
4436 | op->op_flags |= OPf_SPECIAL; |
4437 | } | |
4438 | } | |
bbce6d69 | 4439 | |
79072805 LW |
4440 | return op; |
4441 | } | |
4442 | ||
4443 | OP * | |
4444 | ck_split(op) | |
4445 | OP *op; | |
4446 | { | |
4447 | register OP *kid; | |
ed6116ce | 4448 | PMOP* pm; |
79072805 LW |
4449 | |
4450 | if (op->op_flags & OPf_STACKED) | |
4451 | return no_fh_allowed(op); | |
4452 | ||
79072805 | 4453 | kid = cLISTOP->op_first; |
8990e307 | 4454 | if (kid->op_type != OP_NULL) |
463ee0b2 | 4455 | croak("panic: ck_split"); |
8990e307 LW |
4456 | kid = kid->op_sibling; |
4457 | op_free(cLISTOP->op_first); | |
4458 | cLISTOP->op_first = kid; | |
85e6fe83 | 4459 | if (!kid) { |
8990e307 | 4460 | cLISTOP->op_first = kid = newSVOP(OP_CONST, 0, newSVpv(" ", 1)); |
85e6fe83 LW |
4461 | cLISTOP->op_last = kid; /* There was only one element previously */ |
4462 | } | |
79072805 LW |
4463 | |
4464 | if (kid->op_type != OP_MATCH) { | |
4465 | OP *sibl = kid->op_sibling; | |
463ee0b2 | 4466 | kid->op_sibling = 0; |
79072805 LW |
4467 | kid = pmruntime( newPMOP(OP_MATCH, OPf_SPECIAL), kid, Nullop); |
4468 | if (cLISTOP->op_first == cLISTOP->op_last) | |
4469 | cLISTOP->op_last = kid; | |
4470 | cLISTOP->op_first = kid; | |
4471 | kid->op_sibling = sibl; | |
4472 | } | |
ed6116ce LW |
4473 | pm = (PMOP*)kid; |
4474 | if (pm->op_pmshort && !(pm->op_pmflags & PMf_ALL)) { | |
8990e307 | 4475 | SvREFCNT_dec(pm->op_pmshort); /* can't use substring to optimize */ |
ed6116ce LW |
4476 | pm->op_pmshort = 0; |
4477 | } | |
79072805 LW |
4478 | |
4479 | kid->op_type = OP_PUSHRE; | |
4480 | kid->op_ppaddr = ppaddr[OP_PUSHRE]; | |
4481 | scalar(kid); | |
4482 | ||
4483 | if (!kid->op_sibling) | |
4484 | append_elem(OP_SPLIT, op, newSVREF(newGVOP(OP_GV, 0, defgv)) ); | |
4485 | ||
4486 | kid = kid->op_sibling; | |
4487 | scalar(kid); | |
4488 | ||
4489 | if (!kid->op_sibling) | |
4490 | append_elem(OP_SPLIT, op, newSVOP(OP_CONST, 0, newSViv(0))); | |
4491 | ||
4492 | kid = kid->op_sibling; | |
4493 | scalar(kid); | |
4494 | ||
4495 | if (kid->op_sibling) | |
c07a80fd | 4496 | return too_many_arguments(op,op_desc[op->op_type]); |
79072805 LW |
4497 | |
4498 | return op; | |
4499 | } | |
4500 | ||
4501 | OP * | |
4502 | ck_subr(op) | |
4503 | OP *op; | |
4504 | { | |
4633a7c4 LW |
4505 | OP *prev = ((cUNOP->op_first->op_sibling) |
4506 | ? cUNOP : ((UNOP*)cUNOP->op_first))->op_first; | |
4507 | OP *o = prev->op_sibling; | |
4508 | OP *cvop; | |
4509 | char *proto = 0; | |
4510 | CV *cv = 0; | |
46fc3d4c | 4511 | GV *namegv = 0; |
4633a7c4 LW |
4512 | int optional = 0; |
4513 | I32 arg = 0; | |
4514 | ||
4515 | for (cvop = o; cvop->op_sibling; cvop = cvop->op_sibling) ; | |
4516 | if (cvop->op_type == OP_RV2CV) { | |
4517 | SVOP* tmpop; | |
c07a80fd | 4518 | op->op_private |= (cvop->op_private & OPpENTERSUB_AMPER); |
4633a7c4 LW |
4519 | null(cvop); /* disable rv2cv */ |
4520 | tmpop = (SVOP*)((UNOP*)cvop)->op_first; | |
4521 | if (tmpop->op_type == OP_GV) { | |
8ebc5c01 | 4522 | cv = GvCVu(tmpop->op_sv); |
46fc3d4c | 4523 | if (cv && SvPOK(cv) && !(op->op_private & OPpENTERSUB_AMPER)) { |
4524 | namegv = CvANON(cv) ? (GV*)tmpop->op_sv : CvGV(cv); | |
4525 | proto = SvPV((SV*)cv, na); | |
4526 | } | |
4633a7c4 LW |
4527 | } |
4528 | } | |
c07a80fd | 4529 | op->op_private |= (hints & HINT_STRICT_REFS); |
8990e307 | 4530 | if (perldb && curstash != debstash) |
c07a80fd | 4531 | op->op_private |= OPpENTERSUB_DB; |
4633a7c4 LW |
4532 | while (o != cvop) { |
4533 | if (proto) { | |
4534 | switch (*proto) { | |
4535 | case '\0': | |
46fc3d4c | 4536 | return too_many_arguments(op, gv_ename(namegv)); |
4633a7c4 LW |
4537 | case ';': |
4538 | optional = 1; | |
4539 | proto++; | |
4540 | continue; | |
4541 | case '$': | |
4542 | proto++; | |
4543 | arg++; | |
4544 | scalar(o); | |
4545 | break; | |
4546 | case '%': | |
4547 | case '@': | |
4548 | list(o); | |
4549 | arg++; | |
4550 | break; | |
4551 | case '&': | |
4552 | proto++; | |
4553 | arg++; | |
4554 | if (o->op_type != OP_REFGEN && o->op_type != OP_UNDEF) | |
46fc3d4c | 4555 | bad_type(arg, "block", gv_ename(namegv), o); |
4633a7c4 LW |
4556 | break; |
4557 | case '*': | |
4558 | proto++; | |
4559 | arg++; | |
4560 | if (o->op_type == OP_RV2GV) | |
4561 | goto wrapref; | |
4562 | { | |
4563 | OP* kid = o; | |
4564 | o = newUNOP(OP_RV2GV, 0, kid); | |
4565 | o->op_sibling = kid->op_sibling; | |
4566 | kid->op_sibling = 0; | |
4567 | prev->op_sibling = o; | |
4568 | } | |
4569 | goto wrapref; | |
4570 | case '\\': | |
4571 | proto++; | |
4572 | arg++; | |
4573 | switch (*proto++) { | |
4574 | case '*': | |
4575 | if (o->op_type != OP_RV2GV) | |
46fc3d4c | 4576 | bad_type(arg, "symbol", gv_ename(namegv), o); |
4633a7c4 LW |
4577 | goto wrapref; |
4578 | case '&': | |
4579 | if (o->op_type != OP_RV2CV) | |
46fc3d4c | 4580 | bad_type(arg, "sub", gv_ename(namegv), o); |
4633a7c4 LW |
4581 | goto wrapref; |
4582 | case '$': | |
4583 | if (o->op_type != OP_RV2SV && o->op_type != OP_PADSV) | |
46fc3d4c | 4584 | bad_type(arg, "scalar", gv_ename(namegv), o); |
4633a7c4 LW |
4585 | goto wrapref; |
4586 | case '@': | |
4587 | if (o->op_type != OP_RV2AV && o->op_type != OP_PADAV) | |
46fc3d4c | 4588 | bad_type(arg, "array", gv_ename(namegv), o); |
4633a7c4 LW |
4589 | goto wrapref; |
4590 | case '%': | |
4591 | if (o->op_type != OP_RV2HV && o->op_type != OP_PADHV) | |
46fc3d4c | 4592 | bad_type(arg, "hash", gv_ename(namegv), o); |
4633a7c4 LW |
4593 | wrapref: |
4594 | { | |
4595 | OP* kid = o; | |
4596 | o = newUNOP(OP_REFGEN, 0, kid); | |
4597 | o->op_sibling = kid->op_sibling; | |
4598 | kid->op_sibling = 0; | |
4599 | prev->op_sibling = o; | |
4600 | } | |
4601 | break; | |
4602 | default: goto oops; | |
4603 | } | |
4604 | break; | |
b1cb66bf | 4605 | case ' ': |
4606 | proto++; | |
4607 | continue; | |
4633a7c4 LW |
4608 | default: |
4609 | oops: | |
4610 | croak("Malformed prototype for %s: %s", | |
46fc3d4c | 4611 | gv_ename(namegv), SvPV((SV*)cv, na)); |
4633a7c4 LW |
4612 | } |
4613 | } | |
4614 | else | |
4615 | list(o); | |
68dc0745 | 4616 | mod(o, OP_ENTERSUB); |
4633a7c4 LW |
4617 | prev = o; |
4618 | o = o->op_sibling; | |
4619 | } | |
4620 | if (proto && !optional && *proto == '$') | |
46fc3d4c | 4621 | return too_few_arguments(op, gv_ename(namegv)); |
79072805 LW |
4622 | return op; |
4623 | } | |
4624 | ||
4625 | OP * | |
8990e307 LW |
4626 | ck_svconst(op) |
4627 | OP *op; | |
4628 | { | |
4629 | SvREADONLY_on(cSVOP->op_sv); | |
4630 | return op; | |
4631 | } | |
4632 | ||
4633 | OP * | |
79072805 LW |
4634 | ck_trunc(op) |
4635 | OP *op; | |
4636 | { | |
4637 | if (op->op_flags & OPf_KIDS) { | |
4638 | SVOP *kid = (SVOP*)cUNOP->op_first; | |
4639 | ||
a0d0e21e LW |
4640 | if (kid->op_type == OP_NULL) |
4641 | kid = (SVOP*)kid->op_sibling; | |
4642 | if (kid && | |
4643 | kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) | |
79072805 LW |
4644 | op->op_flags |= OPf_SPECIAL; |
4645 | } | |
4646 | return ck_fun(op); | |
4647 | } | |
4648 | ||
463ee0b2 LW |
4649 | /* A peephole optimizer. We visit the ops in the order they're to execute. */ |
4650 | ||
79072805 | 4651 | void |
a0d0e21e LW |
4652 | peep(o) |
4653 | register OP* o; | |
79072805 LW |
4654 | { |
4655 | register OP* oldop = 0; | |
a0d0e21e | 4656 | if (!o || o->op_seq) |
79072805 | 4657 | return; |
a0d0e21e LW |
4658 | ENTER; |
4659 | SAVESPTR(op); | |
4660 | SAVESPTR(curcop); | |
4661 | for (; o; o = o->op_next) { | |
4662 | if (o->op_seq) | |
4663 | break; | |
c07a80fd | 4664 | if (!op_seqmax) |
4665 | op_seqmax++; | |
a0d0e21e LW |
4666 | op = o; |
4667 | switch (o->op_type) { | |
4668 | case OP_NEXTSTATE: | |
4669 | case OP_DBSTATE: | |
4670 | curcop = ((COP*)o); /* for warnings */ | |
c07a80fd | 4671 | o->op_seq = op_seqmax++; |
a0d0e21e LW |
4672 | break; |
4673 | ||
4674 | case OP_CONCAT: | |
4675 | case OP_CONST: | |
4676 | case OP_JOIN: | |
4677 | case OP_UC: | |
4678 | case OP_UCFIRST: | |
4679 | case OP_LC: | |
4680 | case OP_LCFIRST: | |
4681 | case OP_QUOTEMETA: | |
4682 | if (o->op_next->op_type == OP_STRINGIFY) | |
4683 | null(o->op_next); | |
c07a80fd | 4684 | o->op_seq = op_seqmax++; |
a0d0e21e | 4685 | break; |
8990e307 | 4686 | case OP_STUB: |
54310121 | 4687 | if ((o->op_flags & OPf_WANT) != OPf_WANT_LIST) { |
c07a80fd | 4688 | o->op_seq = op_seqmax++; |
54310121 | 4689 | break; /* Scalar stub must produce undef. List stub is noop */ |
8990e307 | 4690 | } |
748a9306 | 4691 | goto nothin; |
79072805 | 4692 | case OP_NULL: |
748a9306 LW |
4693 | if (o->op_targ == OP_NEXTSTATE || o->op_targ == OP_DBSTATE) |
4694 | curcop = ((COP*)op); | |
4695 | goto nothin; | |
79072805 | 4696 | case OP_SCALAR: |
93a17b20 | 4697 | case OP_LINESEQ: |
463ee0b2 | 4698 | case OP_SCOPE: |
748a9306 | 4699 | nothin: |
a0d0e21e LW |
4700 | if (oldop && o->op_next) { |
4701 | oldop->op_next = o->op_next; | |
79072805 LW |
4702 | continue; |
4703 | } | |
c07a80fd | 4704 | o->op_seq = op_seqmax++; |
79072805 LW |
4705 | break; |
4706 | ||
4707 | case OP_GV: | |
a0d0e21e | 4708 | if (o->op_next->op_type == OP_RV2SV) { |
5f05dabc | 4709 | if (!(o->op_next->op_private & OPpDEREF)) { |
a0d0e21e LW |
4710 | null(o->op_next); |
4711 | o->op_private |= o->op_next->op_private & OPpLVAL_INTRO; | |
4712 | o->op_next = o->op_next->op_next; | |
4713 | o->op_type = OP_GVSV; | |
4714 | o->op_ppaddr = ppaddr[OP_GVSV]; | |
8990e307 LW |
4715 | } |
4716 | } | |
a0d0e21e LW |
4717 | else if (o->op_next->op_type == OP_RV2AV) { |
4718 | OP* pop = o->op_next->op_next; | |
4719 | IV i; | |
8990e307 | 4720 | if (pop->op_type == OP_CONST && |
a0d0e21e | 4721 | (op = pop->op_next) && |
8990e307 | 4722 | pop->op_next->op_type == OP_AELEM && |
68dc0745 | 4723 | !(pop->op_next->op_private & |
4724 | (OPpLVAL_INTRO|OPpLVAL_DEFER|OPpDEREF)) && | |
a0d0e21e LW |
4725 | (i = SvIV(((SVOP*)pop)->op_sv) - compiling.cop_arybase) |
4726 | <= 255 && | |
8990e307 LW |
4727 | i >= 0) |
4728 | { | |
748a9306 | 4729 | SvREFCNT_dec(((SVOP*)pop)->op_sv); |
a0d0e21e | 4730 | null(o->op_next); |
8990e307 LW |
4731 | null(pop->op_next); |
4732 | null(pop); | |
a0d0e21e LW |
4733 | o->op_flags |= pop->op_next->op_flags & OPf_MOD; |
4734 | o->op_next = pop->op_next->op_next; | |
4735 | o->op_type = OP_AELEMFAST; | |
4736 | o->op_ppaddr = ppaddr[OP_AELEMFAST]; | |
4737 | o->op_private = (U8)i; | |
a6006777 | 4738 | GvAVn(((GVOP*)o)->op_gv); |
8990e307 | 4739 | } |
79072805 | 4740 | } |
c07a80fd | 4741 | o->op_seq = op_seqmax++; |
79072805 LW |
4742 | break; |
4743 | ||
a0d0e21e | 4744 | case OP_MAPWHILE: |
79072805 LW |
4745 | case OP_GREPWHILE: |
4746 | case OP_AND: | |
4747 | case OP_OR: | |
c07a80fd | 4748 | o->op_seq = op_seqmax++; |
79072805 LW |
4749 | peep(cLOGOP->op_other); |
4750 | break; | |
4751 | ||
4752 | case OP_COND_EXPR: | |
c07a80fd | 4753 | o->op_seq = op_seqmax++; |
79072805 LW |
4754 | peep(cCONDOP->op_true); |
4755 | peep(cCONDOP->op_false); | |
4756 | break; | |
4757 | ||
4758 | case OP_ENTERLOOP: | |
c07a80fd | 4759 | o->op_seq = op_seqmax++; |
79072805 LW |
4760 | peep(cLOOP->op_redoop); |
4761 | peep(cLOOP->op_nextop); | |
4762 | peep(cLOOP->op_lastop); | |
4763 | break; | |
4764 | ||
4765 | case OP_MATCH: | |
4766 | case OP_SUBST: | |
c07a80fd | 4767 | o->op_seq = op_seqmax++; |
a0d0e21e | 4768 | peep(cPMOP->op_pmreplstart); |
79072805 LW |
4769 | break; |
4770 | ||
a0d0e21e | 4771 | case OP_EXEC: |
c07a80fd | 4772 | o->op_seq = op_seqmax++; |
a0d0e21e LW |
4773 | if (dowarn && o->op_next && o->op_next->op_type == OP_NEXTSTATE) { |
4774 | if (o->op_next->op_sibling && | |
4775 | o->op_next->op_sibling->op_type != OP_DIE) { | |
4776 | line_t oldline = curcop->cop_line; | |
4777 | ||
4778 | curcop->cop_line = ((COP*)o->op_next)->cop_line; | |
4779 | warn("Statement unlikely to be reached"); | |
4780 | warn("(Maybe you meant system() when you said exec()?)\n"); | |
4781 | curcop->cop_line = oldline; | |
4782 | } | |
4783 | } | |
4784 | break; | |
79072805 | 4785 | default: |
c07a80fd | 4786 | o->op_seq = op_seqmax++; |
79072805 LW |
4787 | break; |
4788 | } | |
a0d0e21e | 4789 | oldop = o; |
79072805 | 4790 | } |
a0d0e21e | 4791 | LEAVE; |
79072805 | 4792 | } |