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 | ||
76e3520e | 21 | #ifdef PERL_OBJECT |
22c35a8c | 22 | #define CHECKCALL this->*PL_check |
76e3520e | 23 | #else |
22c35a8c | 24 | #define CHECKCALL *PL_check |
76e3520e GS |
25 | #endif |
26 | ||
e50aee73 | 27 | /* |
5dc0d613 | 28 | * In the following definition, the ", Nullop" is just to make the compiler |
a5f75d66 | 29 | * think the expression is of the right type: croak actually does a Siglongjmp. |
e50aee73 | 30 | */ |
11343788 | 31 | #define CHECKOP(type,o) \ |
3280af22 | 32 | ((PL_op_mask && PL_op_mask[type]) \ |
5dc0d613 | 33 | ? ( op_free((OP*)o), \ |
22c35a8c | 34 | croak("%s trapped by operation mask", PL_op_desc[type]), \ |
28757baa | 35 | Nullop ) \ |
76e3520e | 36 | : (CHECKCALL[type])((OP*)o)) |
e50aee73 | 37 | |
c53d7c7d HS |
38 | #define PAD_MAX 999999999 |
39 | ||
76e3520e GS |
40 | static bool scalar_mod_type _((OP *o, I32 type)); |
41 | #ifndef PERL_OBJECT | |
11343788 | 42 | static I32 list_assignment _((OP *o)); |
3bc5dc61 | 43 | static void bad_type _((I32 n, char *t, char *name, OP *kid)); |
11343788 MB |
44 | static OP *modkids _((OP *o, I32 type)); |
45 | static OP *no_fh_allowed _((OP *o)); | |
46 | static OP *scalarboolean _((OP *o)); | |
47 | static OP *too_few_arguments _((OP *o, char* name)); | |
48 | static OP *too_many_arguments _((OP *o, char* name)); | |
49 | static void null _((OP* o)); | |
bbce6d69 | 50 | static PADOFFSET pad_findlex _((char* name, PADOFFSET newoff, U32 seq, |
155fc61f | 51 | CV* startcv, I32 cx_ix, I32 saweval)); |
54b9620d | 52 | static OP *newDEFSVOP _((void)); |
883ffac3 | 53 | static OP *new_logop _((I32 type, I32 flags, OP **firstp, OP **otherp)); |
bda4119b | 54 | static void simplify_sort _((OP *o)); |
35cd451c | 55 | static bool is_handle_constructor _((OP *o, I32 argnum)); |
76e3520e | 56 | #endif |
79072805 | 57 | |
76e3520e | 58 | STATIC char* |
8ac85365 | 59 | gv_ename(GV *gv) |
4633a7c4 | 60 | { |
2d8e6c8d | 61 | STRLEN n_a; |
4633a7c4 | 62 | SV* tmpsv = sv_newmortal(); |
46fc3d4c | 63 | gv_efullname3(tmpsv, gv, Nullch); |
2d8e6c8d | 64 | return SvPV(tmpsv,n_a); |
4633a7c4 LW |
65 | } |
66 | ||
76e3520e | 67 | STATIC OP * |
8ac85365 | 68 | no_fh_allowed(OP *o) |
79072805 | 69 | { |
46fc3d4c | 70 | yyerror(form("Missing comma after first argument to %s function", |
22c35a8c | 71 | PL_op_desc[o->op_type])); |
11343788 | 72 | return o; |
79072805 LW |
73 | } |
74 | ||
76e3520e | 75 | STATIC OP * |
8ac85365 | 76 | too_few_arguments(OP *o, char *name) |
79072805 | 77 | { |
46fc3d4c | 78 | yyerror(form("Not enough arguments for %s", name)); |
11343788 | 79 | return o; |
79072805 LW |
80 | } |
81 | ||
76e3520e | 82 | STATIC OP * |
8ac85365 | 83 | too_many_arguments(OP *o, char *name) |
79072805 | 84 | { |
46fc3d4c | 85 | yyerror(form("Too many arguments for %s", name)); |
11343788 | 86 | return o; |
79072805 LW |
87 | } |
88 | ||
76e3520e | 89 | STATIC void |
8ac85365 | 90 | bad_type(I32 n, char *t, char *name, OP *kid) |
8990e307 | 91 | { |
46fc3d4c | 92 | yyerror(form("Type of arg %d to %s must be %s (not %s)", |
22c35a8c | 93 | (int)n, name, t, PL_op_desc[kid->op_type])); |
8990e307 LW |
94 | } |
95 | ||
a0d0e21e | 96 | void |
8ac85365 | 97 | assertref(OP *o) |
a0d0e21e | 98 | { |
11343788 | 99 | int type = o->op_type; |
136254bc | 100 | if (type != OP_AELEM && type != OP_HELEM && type != OP_GELEM) { |
22c35a8c | 101 | yyerror(form("Can't use subscript on %s", PL_op_desc[type])); |
bde90e66 | 102 | if (type == OP_ENTERSUB || type == OP_RV2HV || type == OP_PADHV) { |
9c82454c | 103 | dTHR; |
bde90e66 HS |
104 | SV *msg = sv_2mortal( |
105 | newSVpvf("(Did you mean $ or @ instead of %c?)\n", | |
106 | type == OP_ENTERSUB ? '&' : '%')); | |
3280af22 | 107 | if (PL_in_eval & 2) |
bde90e66 | 108 | warn("%_", msg); |
3280af22 NIS |
109 | else if (PL_in_eval) |
110 | sv_catsv(GvSV(PL_errgv), msg); | |
bde90e66 HS |
111 | else |
112 | PerlIO_write(PerlIO_stderr(), SvPVX(msg), SvCUR(msg)); | |
113 | } | |
a0d0e21e LW |
114 | } |
115 | } | |
116 | ||
79072805 LW |
117 | /* "register" allocation */ |
118 | ||
119 | PADOFFSET | |
8ac85365 | 120 | pad_allocmy(char *name) |
93a17b20 | 121 | { |
11343788 | 122 | dTHR; |
a0d0e21e LW |
123 | PADOFFSET off; |
124 | SV *sv; | |
125 | ||
834a4ddd LW |
126 | if (!( |
127 | isALPHA(name[1]) || | |
128 | (PL_hints & HINT_UTF8 && (name[1] & 0xc0) == 0xc0) || | |
129 | name[1] == '_' && (int)strlen(name) > 2)) | |
130 | { | |
46fc3d4c | 131 | if (!isPRINT(name[1])) { |
132 | name[3] = '\0'; | |
133 | name[2] = toCTRL(name[1]); | |
134 | name[1] = '^'; | |
135 | } | |
a0d0e21e LW |
136 | croak("Can't use global %s in \"my\"",name); |
137 | } | |
599cee73 | 138 | if (ckWARN(WARN_UNSAFE) && AvFILLp(PL_comppad_name) >= 0) { |
3280af22 NIS |
139 | SV **svp = AvARRAY(PL_comppad_name); |
140 | for (off = AvFILLp(PL_comppad_name); off > PL_comppad_name_floor; off--) { | |
b1cb66bf | 141 | if ((sv = svp[off]) |
3280af22 | 142 | && sv != &PL_sv_undef |
c53d7c7d | 143 | && (SvIVX(sv) == PAD_MAX || SvIVX(sv) == 0) |
b1cb66bf | 144 | && strEQ(name, SvPVX(sv))) |
145 | { | |
599cee73 | 146 | warner(WARN_UNSAFE, |
9fbbe825 | 147 | "\"my\" variable %s masks earlier declaration in same %s", |
c53d7c7d | 148 | name, (SvIVX(sv) == PAD_MAX ? "scope" : "statement")); |
b1cb66bf | 149 | break; |
150 | } | |
151 | } | |
152 | } | |
a0d0e21e LW |
153 | off = pad_alloc(OP_PADSV, SVs_PADMY); |
154 | sv = NEWSV(1102,0); | |
93a17b20 LW |
155 | sv_upgrade(sv, SVt_PVNV); |
156 | sv_setpv(sv, name); | |
3280af22 | 157 | if (PL_in_my_stash) { |
c750a3ec MB |
158 | if (*name != '$') |
159 | croak("Can't declare class for non-scalar %s in \"my\"",name); | |
160 | SvOBJECT_on(sv); | |
161 | (void)SvUPGRADE(sv, SVt_PVMG); | |
3280af22 NIS |
162 | SvSTASH(sv) = (HV*)SvREFCNT_inc(PL_in_my_stash); |
163 | PL_sv_objcount++; | |
c750a3ec | 164 | } |
3280af22 | 165 | av_store(PL_comppad_name, off, sv); |
c53d7c7d | 166 | SvNVX(sv) = (double)PAD_MAX; |
8990e307 | 167 | SvIVX(sv) = 0; /* Not yet introduced--see newSTATEOP */ |
3280af22 NIS |
168 | if (!PL_min_intro_pending) |
169 | PL_min_intro_pending = off; | |
170 | PL_max_intro_pending = off; | |
93a17b20 | 171 | if (*name == '@') |
3280af22 | 172 | av_store(PL_comppad, off, (SV*)newAV()); |
93a17b20 | 173 | else if (*name == '%') |
3280af22 NIS |
174 | av_store(PL_comppad, off, (SV*)newHV()); |
175 | SvPADMY_on(PL_curpad[off]); | |
93a17b20 LW |
176 | return off; |
177 | } | |
178 | ||
76e3520e | 179 | STATIC PADOFFSET |
155fc61f | 180 | pad_findlex(char *name, PADOFFSET newoff, U32 seq, CV* startcv, I32 cx_ix, I32 saweval) |
93a17b20 | 181 | { |
11343788 | 182 | dTHR; |
748a9306 | 183 | CV *cv; |
93a17b20 LW |
184 | I32 off; |
185 | SV *sv; | |
93a17b20 | 186 | register I32 i; |
c09156bb | 187 | register PERL_CONTEXT *cx; |
93a17b20 | 188 | |
748a9306 | 189 | for (cv = startcv; cv; cv = CvOUTSIDE(cv)) { |
4fdae800 | 190 | AV *curlist = CvPADLIST(cv); |
191 | SV **svp = av_fetch(curlist, 0, FALSE); | |
748a9306 | 192 | AV *curname; |
4fdae800 | 193 | |
3280af22 | 194 | if (!svp || *svp == &PL_sv_undef) |
4633a7c4 | 195 | continue; |
748a9306 LW |
196 | curname = (AV*)*svp; |
197 | svp = AvARRAY(curname); | |
93965878 | 198 | for (off = AvFILLp(curname); off > 0; off--) { |
748a9306 | 199 | if ((sv = svp[off]) && |
3280af22 | 200 | sv != &PL_sv_undef && |
748a9306 | 201 | seq <= SvIVX(sv) && |
13826f2c | 202 | seq > I_32(SvNVX(sv)) && |
748a9306 LW |
203 | strEQ(SvPVX(sv), name)) |
204 | { | |
5f05dabc | 205 | I32 depth; |
206 | AV *oldpad; | |
207 | SV *oldsv; | |
208 | ||
209 | depth = CvDEPTH(cv); | |
210 | if (!depth) { | |
9607fc9c | 211 | if (newoff) { |
212 | if (SvFAKE(sv)) | |
213 | continue; | |
4fdae800 | 214 | return 0; /* don't clone from inactive stack frame */ |
9607fc9c | 215 | } |
5f05dabc | 216 | depth = 1; |
217 | } | |
218 | oldpad = (AV*)*av_fetch(curlist, depth, FALSE); | |
219 | oldsv = *av_fetch(oldpad, off, TRUE); | |
748a9306 | 220 | if (!newoff) { /* Not a mere clone operation. */ |
9607fc9c | 221 | SV *namesv = NEWSV(1103,0); |
748a9306 | 222 | newoff = pad_alloc(OP_PADSV, SVs_PADMY); |
9607fc9c | 223 | sv_upgrade(namesv, SVt_PVNV); |
224 | sv_setpv(namesv, name); | |
3280af22 NIS |
225 | av_store(PL_comppad_name, newoff, namesv); |
226 | SvNVX(namesv) = (double)PL_curcop->cop_seq; | |
c53d7c7d | 227 | SvIVX(namesv) = PAD_MAX; /* A ref, intro immediately */ |
9607fc9c | 228 | SvFAKE_on(namesv); /* A ref, not a real var */ |
87671ffc | 229 | if (SvOBJECT(sv)) { /* A typed var */ |
3d93dc8b GS |
230 | SvOBJECT_on(namesv); |
231 | (void)SvUPGRADE(namesv, SVt_PVMG); | |
87671ffc | 232 | SvSTASH(namesv) = (HV*)SvREFCNT_inc((SV*)SvSTASH(sv)); |
3d93dc8b GS |
233 | PL_sv_objcount++; |
234 | } | |
3280af22 | 235 | if (CvANON(PL_compcv) || SvTYPE(PL_compcv) == SVt_PVFM) { |
28757baa | 236 | /* "It's closures all the way down." */ |
3280af22 | 237 | CvCLONE_on(PL_compcv); |
54310121 | 238 | if (cv == startcv) { |
3280af22 | 239 | if (CvANON(PL_compcv)) |
54310121 | 240 | oldsv = Nullsv; /* no need to keep ref */ |
241 | } | |
242 | else { | |
28757baa | 243 | CV *bcv; |
244 | for (bcv = startcv; | |
245 | bcv && bcv != cv && !CvCLONE(bcv); | |
6b35e009 GS |
246 | bcv = CvOUTSIDE(bcv)) |
247 | { | |
28757baa | 248 | if (CvANON(bcv)) |
249 | CvCLONE_on(bcv); | |
250 | else { | |
6b35e009 GS |
251 | if (ckWARN(WARN_CLOSURE) |
252 | && !CvUNIQUE(bcv) && !CvUNIQUE(cv)) | |
253 | { | |
599cee73 | 254 | warner(WARN_CLOSURE, |
44a8e56a | 255 | "Variable \"%s\" may be unavailable", |
28757baa | 256 | name); |
6b35e009 | 257 | } |
28757baa | 258 | break; |
259 | } | |
260 | } | |
261 | } | |
262 | } | |
3280af22 | 263 | else if (!CvUNIQUE(PL_compcv)) { |
599cee73 PM |
264 | if (ckWARN(WARN_CLOSURE) && !SvFAKE(sv) && !CvUNIQUE(cv)) |
265 | warner(WARN_CLOSURE, | |
266 | "Variable \"%s\" will not stay shared", name); | |
5f05dabc | 267 | } |
748a9306 | 268 | } |
3280af22 | 269 | av_store(PL_comppad, newoff, SvREFCNT_inc(oldsv)); |
748a9306 LW |
270 | return newoff; |
271 | } | |
93a17b20 LW |
272 | } |
273 | } | |
274 | ||
275 | /* Nothing in current lexical context--try eval's context, if any. | |
276 | * This is necessary to let the perldb get at lexically scoped variables. | |
277 | * XXX This will also probably interact badly with eval tree caching. | |
278 | */ | |
279 | ||
748a9306 | 280 | for (i = cx_ix; i >= 0; i--) { |
93a17b20 | 281 | cx = &cxstack[i]; |
6b35e009 | 282 | switch (CxTYPE(cx)) { |
93a17b20 | 283 | default: |
748a9306 LW |
284 | if (i == 0 && saweval) { |
285 | seq = cxstack[saweval].blk_oldcop->cop_seq; | |
155fc61f | 286 | return pad_findlex(name, newoff, seq, PL_main_cv, -1, saweval); |
748a9306 | 287 | } |
93a17b20 LW |
288 | break; |
289 | case CXt_EVAL: | |
44a8e56a | 290 | switch (cx->blk_eval.old_op_type) { |
291 | case OP_ENTEREVAL: | |
6b35e009 GS |
292 | if (CxREALEVAL(cx)) |
293 | saweval = i; | |
44a8e56a | 294 | break; |
295 | case OP_REQUIRE: | |
296 | /* require must have its own scope */ | |
297 | return 0; | |
298 | } | |
93a17b20 LW |
299 | break; |
300 | case CXt_SUB: | |
301 | if (!saweval) | |
302 | return 0; | |
303 | cv = cx->blk_sub.cv; | |
3280af22 | 304 | if (PL_debstash && CvSTASH(cv) == PL_debstash) { /* ignore DB'* scope */ |
748a9306 | 305 | saweval = i; /* so we know where we were called from */ |
93a17b20 | 306 | continue; |
93a17b20 | 307 | } |
748a9306 | 308 | seq = cxstack[saweval].blk_oldcop->cop_seq; |
155fc61f | 309 | return pad_findlex(name, newoff, seq, cv, i-1, saweval); |
93a17b20 LW |
310 | } |
311 | } | |
312 | ||
748a9306 LW |
313 | return 0; |
314 | } | |
a0d0e21e | 315 | |
748a9306 | 316 | PADOFFSET |
8ac85365 | 317 | pad_findmy(char *name) |
748a9306 | 318 | { |
11343788 | 319 | dTHR; |
748a9306 | 320 | I32 off; |
54310121 | 321 | I32 pendoff = 0; |
748a9306 | 322 | SV *sv; |
3280af22 NIS |
323 | SV **svp = AvARRAY(PL_comppad_name); |
324 | U32 seq = PL_cop_seqmax; | |
6b35e009 | 325 | PERL_CONTEXT *cx; |
33b8ce05 | 326 | CV *outside; |
748a9306 | 327 | |
11343788 MB |
328 | #ifdef USE_THREADS |
329 | /* | |
330 | * Special case to get lexical (and hence per-thread) @_. | |
331 | * XXX I need to find out how to tell at parse-time whether use | |
332 | * of @_ should refer to a lexical (from a sub) or defgv (global | |
333 | * scope and maybe weird sub-ish things like formats). See | |
334 | * startsub in perly.y. It's possible that @_ could be lexical | |
335 | * (at least from subs) even in non-threaded perl. | |
336 | */ | |
337 | if (strEQ(name, "@_")) | |
338 | return 0; /* success. (NOT_IN_PAD indicates failure) */ | |
339 | #endif /* USE_THREADS */ | |
340 | ||
748a9306 | 341 | /* The one we're looking for is probably just before comppad_name_fill. */ |
3280af22 | 342 | for (off = AvFILLp(PL_comppad_name); off > 0; off--) { |
a0d0e21e | 343 | if ((sv = svp[off]) && |
3280af22 | 344 | sv != &PL_sv_undef && |
54310121 | 345 | (!SvIVX(sv) || |
346 | (seq <= SvIVX(sv) && | |
347 | seq > I_32(SvNVX(sv)))) && | |
a0d0e21e LW |
348 | strEQ(SvPVX(sv), name)) |
349 | { | |
54310121 | 350 | if (SvIVX(sv)) |
351 | return (PADOFFSET)off; | |
352 | pendoff = off; /* this pending def. will override import */ | |
a0d0e21e LW |
353 | } |
354 | } | |
748a9306 | 355 | |
33b8ce05 GS |
356 | outside = CvOUTSIDE(PL_compcv); |
357 | ||
358 | /* Check if if we're compiling an eval'', and adjust seq to be the | |
359 | * eval's seq number. This depends on eval'' having a non-null | |
360 | * CvOUTSIDE() while it is being compiled. The eval'' itself is | |
361 | * identified by CvUNIQUE being set and CvGV being null. */ | |
362 | if (outside && CvUNIQUE(PL_compcv) && !CvGV(PL_compcv) && cxstack_ix >= 0) { | |
6b35e009 GS |
363 | cx = &cxstack[cxstack_ix]; |
364 | if (CxREALEVAL(cx)) | |
365 | seq = cx->blk_oldcop->cop_seq; | |
366 | } | |
367 | ||
748a9306 | 368 | /* See if it's in a nested scope */ |
33b8ce05 | 369 | off = pad_findlex(name, 0, seq, outside, cxstack_ix, 0); |
54310121 | 370 | if (off) { |
371 | /* If there is a pending local definition, this new alias must die */ | |
372 | if (pendoff) | |
3280af22 | 373 | SvIVX(AvARRAY(PL_comppad_name)[off]) = seq; |
11343788 | 374 | return off; /* pad_findlex returns 0 for failure...*/ |
54310121 | 375 | } |
11343788 | 376 | return NOT_IN_PAD; /* ...but we return NOT_IN_PAD for failure */ |
93a17b20 LW |
377 | } |
378 | ||
379 | void | |
8ac85365 | 380 | pad_leavemy(I32 fill) |
93a17b20 LW |
381 | { |
382 | I32 off; | |
3280af22 | 383 | SV **svp = AvARRAY(PL_comppad_name); |
93a17b20 | 384 | SV *sv; |
3280af22 NIS |
385 | if (PL_min_intro_pending && fill < PL_min_intro_pending) { |
386 | for (off = PL_max_intro_pending; off >= PL_min_intro_pending; off--) { | |
387 | if ((sv = svp[off]) && sv != &PL_sv_undef) | |
8990e307 LW |
388 | warn("%s never introduced", SvPVX(sv)); |
389 | } | |
390 | } | |
391 | /* "Deintroduce" my variables that are leaving with this scope. */ | |
3280af22 | 392 | for (off = AvFILLp(PL_comppad_name); off > fill; off--) { |
c53d7c7d | 393 | if ((sv = svp[off]) && sv != &PL_sv_undef && SvIVX(sv) == PAD_MAX) |
3280af22 | 394 | SvIVX(sv) = PL_cop_seqmax; |
93a17b20 LW |
395 | } |
396 | } | |
397 | ||
398 | PADOFFSET | |
8ac85365 | 399 | pad_alloc(I32 optype, U32 tmptype) |
79072805 | 400 | { |
11343788 | 401 | dTHR; |
79072805 LW |
402 | SV *sv; |
403 | I32 retval; | |
404 | ||
3280af22 | 405 | if (AvARRAY(PL_comppad) != PL_curpad) |
463ee0b2 | 406 | croak("panic: pad_alloc"); |
3280af22 | 407 | if (PL_pad_reset_pending) |
a0d0e21e | 408 | pad_reset(); |
ed6116ce | 409 | if (tmptype & SVs_PADMY) { |
79072805 | 410 | do { |
3280af22 | 411 | sv = *av_fetch(PL_comppad, AvFILLp(PL_comppad) + 1, TRUE); |
ed6116ce | 412 | } while (SvPADBUSY(sv)); /* need a fresh one */ |
3280af22 | 413 | retval = AvFILLp(PL_comppad); |
79072805 LW |
414 | } |
415 | else { | |
3280af22 NIS |
416 | SV **names = AvARRAY(PL_comppad_name); |
417 | SSize_t names_fill = AvFILLp(PL_comppad_name); | |
bbce6d69 | 418 | for (;;) { |
419 | /* | |
420 | * "foreach" index vars temporarily become aliases to non-"my" | |
421 | * values. Thus we must skip, not just pad values that are | |
422 | * marked as current pad values, but also those with names. | |
423 | */ | |
3280af22 NIS |
424 | if (++PL_padix <= names_fill && |
425 | (sv = names[PL_padix]) && sv != &PL_sv_undef) | |
bbce6d69 | 426 | continue; |
3280af22 | 427 | sv = *av_fetch(PL_comppad, PL_padix, TRUE); |
bbce6d69 | 428 | if (!(SvFLAGS(sv) & (SVs_PADTMP|SVs_PADMY))) |
429 | break; | |
430 | } | |
3280af22 | 431 | retval = PL_padix; |
79072805 | 432 | } |
8990e307 | 433 | SvFLAGS(sv) |= tmptype; |
3280af22 | 434 | PL_curpad = AvARRAY(PL_comppad); |
11343788 | 435 | #ifdef USE_THREADS |
5dc0d613 | 436 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx alloc %ld for %s\n", |
533c011a | 437 | (unsigned long) thr, (unsigned long) PL_curpad, |
22c35a8c | 438 | (long) retval, PL_op_name[optype])); |
11343788 | 439 | #else |
d9bb4600 | 440 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx alloc %ld for %s\n", |
3280af22 | 441 | (unsigned long) PL_curpad, |
22c35a8c | 442 | (long) retval, PL_op_name[optype])); |
11343788 | 443 | #endif /* USE_THREADS */ |
79072805 LW |
444 | return (PADOFFSET)retval; |
445 | } | |
446 | ||
447 | SV * | |
8990e307 | 448 | pad_sv(PADOFFSET po) |
79072805 | 449 | { |
11343788 MB |
450 | dTHR; |
451 | #ifdef USE_THREADS | |
5dc0d613 | 452 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx sv %d\n", |
533c011a | 453 | (unsigned long) thr, (unsigned long) PL_curpad, po)); |
11343788 | 454 | #else |
79072805 | 455 | if (!po) |
463ee0b2 | 456 | croak("panic: pad_sv po"); |
d9bb4600 | 457 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx sv %d\n", |
3280af22 | 458 | (unsigned long) PL_curpad, po)); |
11343788 | 459 | #endif /* USE_THREADS */ |
3280af22 | 460 | return PL_curpad[po]; /* eventually we'll turn this into a macro */ |
79072805 LW |
461 | } |
462 | ||
463 | void | |
8990e307 | 464 | pad_free(PADOFFSET po) |
79072805 | 465 | { |
11343788 | 466 | dTHR; |
3280af22 | 467 | if (!PL_curpad) |
a0d0e21e | 468 | return; |
3280af22 | 469 | if (AvARRAY(PL_comppad) != PL_curpad) |
463ee0b2 | 470 | croak("panic: pad_free curpad"); |
79072805 | 471 | if (!po) |
463ee0b2 | 472 | croak("panic: pad_free po"); |
11343788 | 473 | #ifdef USE_THREADS |
5dc0d613 | 474 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx free %d\n", |
533c011a | 475 | (unsigned long) thr, (unsigned long) PL_curpad, po)); |
11343788 | 476 | #else |
d9bb4600 | 477 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx free %d\n", |
3280af22 | 478 | (unsigned long) PL_curpad, po)); |
11343788 | 479 | #endif /* USE_THREADS */ |
3280af22 NIS |
480 | if (PL_curpad[po] && PL_curpad[po] != &PL_sv_undef) |
481 | SvPADTMP_off(PL_curpad[po]); | |
482 | if ((I32)po < PL_padix) | |
483 | PL_padix = po - 1; | |
79072805 LW |
484 | } |
485 | ||
486 | void | |
8990e307 | 487 | pad_swipe(PADOFFSET po) |
79072805 | 488 | { |
11343788 | 489 | dTHR; |
3280af22 | 490 | if (AvARRAY(PL_comppad) != PL_curpad) |
463ee0b2 | 491 | croak("panic: pad_swipe curpad"); |
79072805 | 492 | if (!po) |
463ee0b2 | 493 | croak("panic: pad_swipe po"); |
11343788 | 494 | #ifdef USE_THREADS |
5dc0d613 | 495 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx swipe %d\n", |
533c011a | 496 | (unsigned long) thr, (unsigned long) PL_curpad, po)); |
11343788 | 497 | #else |
d9bb4600 | 498 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx swipe %d\n", |
3280af22 | 499 | (unsigned long) PL_curpad, po)); |
11343788 | 500 | #endif /* USE_THREADS */ |
3280af22 NIS |
501 | SvPADTMP_off(PL_curpad[po]); |
502 | PL_curpad[po] = NEWSV(1107,0); | |
503 | SvPADTMP_on(PL_curpad[po]); | |
504 | if ((I32)po < PL_padix) | |
505 | PL_padix = po - 1; | |
79072805 LW |
506 | } |
507 | ||
d9bb4600 GS |
508 | /* XXX pad_reset() is currently disabled because it results in serious bugs. |
509 | * It causes pad temp TARGs to be shared between OPs. Since TARGs are pushed | |
510 | * on the stack by OPs that use them, there are several ways to get an alias | |
511 | * to a shared TARG. Such an alias will change randomly and unpredictably. | |
512 | * We avoid doing this until we can think of a Better Way. | |
513 | * GSAR 97-10-29 */ | |
79072805 | 514 | void |
8ac85365 | 515 | pad_reset(void) |
79072805 | 516 | { |
d9bb4600 | 517 | #ifdef USE_BROKEN_PAD_RESET |
11343788 | 518 | dTHR; |
79072805 LW |
519 | register I32 po; |
520 | ||
6b88bc9c | 521 | if (AvARRAY(PL_comppad) != PL_curpad) |
463ee0b2 | 522 | croak("panic: pad_reset curpad"); |
11343788 | 523 | #ifdef USE_THREADS |
5dc0d613 | 524 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx reset\n", |
6b88bc9c | 525 | (unsigned long) thr, (unsigned long) PL_curpad)); |
11343788 | 526 | #else |
d9bb4600 | 527 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx reset\n", |
6b88bc9c | 528 | (unsigned long) PL_curpad)); |
11343788 | 529 | #endif /* USE_THREADS */ |
6b88bc9c GS |
530 | if (!PL_tainting) { /* Can't mix tainted and non-tainted temporaries. */ |
531 | for (po = AvMAX(PL_comppad); po > PL_padix_floor; po--) { | |
532 | if (PL_curpad[po] && !SvIMMORTAL(PL_curpad[po])) | |
533 | SvPADTMP_off(PL_curpad[po]); | |
748a9306 | 534 | } |
6b88bc9c | 535 | PL_padix = PL_padix_floor; |
79072805 | 536 | } |
d9bb4600 | 537 | #endif |
3280af22 | 538 | PL_pad_reset_pending = FALSE; |
79072805 LW |
539 | } |
540 | ||
a863c7d1 | 541 | #ifdef USE_THREADS |
54b9620d | 542 | /* find_threadsv is not reentrant */ |
a863c7d1 | 543 | PADOFFSET |
08105a92 | 544 | find_threadsv(const char *name) |
a863c7d1 MB |
545 | { |
546 | dTHR; | |
547 | char *p; | |
548 | PADOFFSET key; | |
554b3eca | 549 | SV **svp; |
54b9620d | 550 | /* We currently only handle names of a single character */ |
533c011a | 551 | p = strchr(PL_threadsv_names, *name); |
a863c7d1 MB |
552 | if (!p) |
553 | return NOT_IN_PAD; | |
533c011a | 554 | key = p - PL_threadsv_names; |
2d8e6c8d | 555 | MUTEX_LOCK(&thr->mutex); |
54b9620d | 556 | svp = av_fetch(thr->threadsv, key, FALSE); |
2d8e6c8d GS |
557 | if (svp) |
558 | MUTEX_UNLOCK(&thr->mutex); | |
559 | else { | |
554b3eca | 560 | SV *sv = NEWSV(0, 0); |
54b9620d | 561 | av_store(thr->threadsv, key, sv); |
940cb80d | 562 | thr->threadsvp = AvARRAY(thr->threadsv); |
2d8e6c8d | 563 | MUTEX_UNLOCK(&thr->mutex); |
554b3eca MB |
564 | /* |
565 | * Some magic variables used to be automagically initialised | |
566 | * in gv_fetchpv. Those which are now per-thread magicals get | |
567 | * initialised here instead. | |
568 | */ | |
569 | switch (*name) { | |
54b9620d MB |
570 | case '_': |
571 | break; | |
554b3eca MB |
572 | case ';': |
573 | sv_setpv(sv, "\034"); | |
54b9620d | 574 | sv_magic(sv, 0, 0, name, 1); |
554b3eca | 575 | break; |
c277df42 IZ |
576 | case '&': |
577 | case '`': | |
578 | case '\'': | |
533c011a | 579 | PL_sawampersand = TRUE; |
a3f914c5 GS |
580 | /* FALL THROUGH */ |
581 | case '1': | |
582 | case '2': | |
583 | case '3': | |
584 | case '4': | |
585 | case '5': | |
586 | case '6': | |
587 | case '7': | |
588 | case '8': | |
589 | case '9': | |
c277df42 | 590 | SvREADONLY_on(sv); |
d8b5173a | 591 | /* FALL THROUGH */ |
067391ea GS |
592 | |
593 | /* XXX %! tied to Errno.pm needs to be added here. | |
594 | * See gv_fetchpv(). */ | |
595 | /* case '!': */ | |
596 | ||
54b9620d MB |
597 | default: |
598 | sv_magic(sv, 0, 0, name, 1); | |
554b3eca | 599 | } |
8b73bbec | 600 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), |
54b9620d | 601 | "find_threadsv: new SV %p for $%s%c\n", |
554b3eca MB |
602 | sv, (*name < 32) ? "^" : "", |
603 | (*name < 32) ? toCTRL(*name) : *name)); | |
a863c7d1 MB |
604 | } |
605 | return key; | |
606 | } | |
607 | #endif /* USE_THREADS */ | |
608 | ||
79072805 LW |
609 | /* Destructor */ |
610 | ||
611 | void | |
8ac85365 | 612 | op_free(OP *o) |
79072805 | 613 | { |
85e6fe83 | 614 | register OP *kid, *nextkid; |
79072805 | 615 | |
5dc0d613 | 616 | if (!o || o->op_seq == (U16)-1) |
79072805 LW |
617 | return; |
618 | ||
11343788 MB |
619 | if (o->op_flags & OPf_KIDS) { |
620 | for (kid = cUNOPo->op_first; kid; kid = nextkid) { | |
85e6fe83 | 621 | nextkid = kid->op_sibling; /* Get before next freeing kid */ |
79072805 | 622 | op_free(kid); |
85e6fe83 | 623 | } |
79072805 LW |
624 | } |
625 | ||
11343788 | 626 | switch (o->op_type) { |
8990e307 | 627 | case OP_NULL: |
11343788 | 628 | o->op_targ = 0; /* Was holding old type, if any. */ |
8990e307 | 629 | break; |
a0d0e21e | 630 | case OP_ENTEREVAL: |
11343788 | 631 | o->op_targ = 0; /* Was holding hints. */ |
a0d0e21e | 632 | break; |
554b3eca | 633 | #ifdef USE_THREADS |
8dd3ba40 SM |
634 | case OP_ENTERITER: |
635 | if (!(o->op_flags & OPf_SPECIAL)) | |
636 | break; | |
637 | /* FALL THROUGH */ | |
2faa37cc | 638 | case OP_THREADSV: |
54b9620d | 639 | o->op_targ = 0; /* Was holding index into thr->threadsv AV. */ |
554b3eca MB |
640 | break; |
641 | #endif /* USE_THREADS */ | |
a6006777 | 642 | default: |
ac4c12e7 | 643 | if (!(o->op_flags & OPf_REF) |
22c35a8c | 644 | || (PL_check[o->op_type] != FUNC_NAME_TO_PTR(ck_ftst))) |
a6006777 | 645 | break; |
646 | /* FALL THROUGH */ | |
463ee0b2 | 647 | case OP_GVSV: |
79072805 | 648 | case OP_GV: |
a6006777 | 649 | case OP_AELEMFAST: |
11343788 | 650 | SvREFCNT_dec(cGVOPo->op_gv); |
8990e307 LW |
651 | break; |
652 | case OP_NEXTSTATE: | |
653 | case OP_DBSTATE: | |
5196be3e | 654 | Safefree(cCOPo->cop_label); |
11343788 | 655 | SvREFCNT_dec(cCOPo->cop_filegv); |
599cee73 PM |
656 | if (cCOPo->cop_warnings != WARN_NONE && cCOPo->cop_warnings != WARN_ALL) |
657 | SvREFCNT_dec(cCOPo->cop_warnings); | |
79072805 LW |
658 | break; |
659 | case OP_CONST: | |
11343788 | 660 | SvREFCNT_dec(cSVOPo->op_sv); |
79072805 | 661 | break; |
748a9306 LW |
662 | case OP_GOTO: |
663 | case OP_NEXT: | |
664 | case OP_LAST: | |
665 | case OP_REDO: | |
11343788 | 666 | if (o->op_flags & (OPf_SPECIAL|OPf_STACKED|OPf_KIDS)) |
748a9306 LW |
667 | break; |
668 | /* FALL THROUGH */ | |
a0d0e21e | 669 | case OP_TRANS: |
a0ed51b3 LW |
670 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) |
671 | SvREFCNT_dec(cSVOPo->op_sv); | |
672 | else | |
673 | Safefree(cPVOPo->op_pv); | |
a0d0e21e LW |
674 | break; |
675 | case OP_SUBST: | |
11343788 | 676 | op_free(cPMOPo->op_pmreplroot); |
a0d0e21e | 677 | /* FALL THROUGH */ |
748a9306 | 678 | case OP_PUSHRE: |
a0d0e21e | 679 | case OP_MATCH: |
8782bef2 | 680 | case OP_QR: |
c277df42 | 681 | ReREFCNT_dec(cPMOPo->op_pmregexp); |
a0d0e21e | 682 | break; |
79072805 LW |
683 | } |
684 | ||
11343788 MB |
685 | if (o->op_targ > 0) |
686 | pad_free(o->op_targ); | |
8990e307 | 687 | |
11343788 | 688 | Safefree(o); |
79072805 LW |
689 | } |
690 | ||
76e3520e | 691 | STATIC void |
8ac85365 | 692 | null(OP *o) |
8990e307 | 693 | { |
54b9620d | 694 | if (o->op_type != OP_NULL && o->op_type != OP_THREADSV && o->op_targ > 0) |
11343788 MB |
695 | pad_free(o->op_targ); |
696 | o->op_targ = o->op_type; | |
697 | o->op_type = OP_NULL; | |
22c35a8c | 698 | o->op_ppaddr = PL_ppaddr[OP_NULL]; |
8990e307 LW |
699 | } |
700 | ||
79072805 LW |
701 | /* Contextualizers */ |
702 | ||
463ee0b2 | 703 | #define LINKLIST(o) ((o)->op_next ? (o)->op_next : linklist((OP*)o)) |
79072805 LW |
704 | |
705 | OP * | |
8ac85365 | 706 | linklist(OP *o) |
79072805 LW |
707 | { |
708 | register OP *kid; | |
709 | ||
11343788 MB |
710 | if (o->op_next) |
711 | return o->op_next; | |
79072805 LW |
712 | |
713 | /* establish postfix order */ | |
11343788 MB |
714 | if (cUNOPo->op_first) { |
715 | o->op_next = LINKLIST(cUNOPo->op_first); | |
716 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) { | |
79072805 LW |
717 | if (kid->op_sibling) |
718 | kid->op_next = LINKLIST(kid->op_sibling); | |
719 | else | |
11343788 | 720 | kid->op_next = o; |
79072805 LW |
721 | } |
722 | } | |
723 | else | |
11343788 | 724 | o->op_next = o; |
79072805 | 725 | |
11343788 | 726 | return o->op_next; |
79072805 LW |
727 | } |
728 | ||
729 | OP * | |
8ac85365 | 730 | scalarkids(OP *o) |
79072805 LW |
731 | { |
732 | OP *kid; | |
11343788 MB |
733 | if (o && o->op_flags & OPf_KIDS) { |
734 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
79072805 LW |
735 | scalar(kid); |
736 | } | |
11343788 | 737 | return o; |
79072805 LW |
738 | } |
739 | ||
76e3520e | 740 | STATIC OP * |
8ac85365 | 741 | scalarboolean(OP *o) |
8990e307 | 742 | { |
d008e5eb | 743 | if (o->op_type == OP_SASSIGN && cBINOPo->op_first->op_type == OP_CONST) { |
0f15f207 | 744 | dTHR; |
d008e5eb GS |
745 | if (ckWARN(WARN_SYNTAX)) { |
746 | line_t oldline = PL_curcop->cop_line; | |
a0d0e21e | 747 | |
d008e5eb GS |
748 | if (PL_copline != NOLINE) |
749 | PL_curcop->cop_line = PL_copline; | |
750 | warner(WARN_SYNTAX, "Found = in conditional, should be =="); | |
751 | PL_curcop->cop_line = oldline; | |
752 | } | |
a0d0e21e | 753 | } |
11343788 | 754 | return scalar(o); |
8990e307 LW |
755 | } |
756 | ||
757 | OP * | |
8ac85365 | 758 | scalar(OP *o) |
79072805 LW |
759 | { |
760 | OP *kid; | |
761 | ||
a0d0e21e | 762 | /* assumes no premature commitment */ |
3280af22 | 763 | if (!o || (o->op_flags & OPf_WANT) || PL_error_count |
5dc0d613 | 764 | || o->op_type == OP_RETURN) |
11343788 | 765 | return o; |
79072805 | 766 | |
5dc0d613 | 767 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_SCALAR; |
79072805 | 768 | |
11343788 | 769 | switch (o->op_type) { |
79072805 | 770 | case OP_REPEAT: |
11343788 MB |
771 | if (o->op_private & OPpREPEAT_DOLIST) |
772 | null(((LISTOP*)cBINOPo->op_first)->op_first); | |
773 | scalar(cBINOPo->op_first); | |
8990e307 | 774 | break; |
79072805 LW |
775 | case OP_OR: |
776 | case OP_AND: | |
777 | case OP_COND_EXPR: | |
11343788 | 778 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
8990e307 | 779 | scalar(kid); |
79072805 | 780 | break; |
a0d0e21e | 781 | case OP_SPLIT: |
11343788 | 782 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e LW |
783 | if (!kPMOP->op_pmreplroot) |
784 | deprecate("implicit split to @_"); | |
785 | } | |
786 | /* FALL THROUGH */ | |
79072805 | 787 | case OP_MATCH: |
8782bef2 | 788 | case OP_QR: |
79072805 LW |
789 | case OP_SUBST: |
790 | case OP_NULL: | |
8990e307 | 791 | default: |
11343788 MB |
792 | if (o->op_flags & OPf_KIDS) { |
793 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) | |
8990e307 LW |
794 | scalar(kid); |
795 | } | |
79072805 LW |
796 | break; |
797 | case OP_LEAVE: | |
798 | case OP_LEAVETRY: | |
5dc0d613 | 799 | kid = cLISTOPo->op_first; |
54310121 | 800 | scalar(kid); |
801 | while (kid = kid->op_sibling) { | |
802 | if (kid->op_sibling) | |
803 | scalarvoid(kid); | |
804 | else | |
805 | scalar(kid); | |
806 | } | |
3280af22 | 807 | WITH_THR(PL_curcop = &PL_compiling); |
54310121 | 808 | break; |
748a9306 | 809 | case OP_SCOPE: |
79072805 | 810 | case OP_LINESEQ: |
8990e307 | 811 | case OP_LIST: |
11343788 | 812 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
813 | if (kid->op_sibling) |
814 | scalarvoid(kid); | |
815 | else | |
816 | scalar(kid); | |
817 | } | |
3280af22 | 818 | WITH_THR(PL_curcop = &PL_compiling); |
79072805 LW |
819 | break; |
820 | } | |
11343788 | 821 | return o; |
79072805 LW |
822 | } |
823 | ||
824 | OP * | |
8ac85365 | 825 | scalarvoid(OP *o) |
79072805 LW |
826 | { |
827 | OP *kid; | |
8990e307 LW |
828 | char* useless = 0; |
829 | SV* sv; | |
79072805 | 830 | |
54310121 | 831 | /* assumes no premature commitment */ |
68c73484 JH |
832 | U8 want = o->op_flags & OPf_WANT; |
833 | if (!o || (want && want != OPf_WANT_SCALAR) || PL_error_count | |
5dc0d613 | 834 | || o->op_type == OP_RETURN) |
11343788 | 835 | return o; |
79072805 | 836 | |
5dc0d613 | 837 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_VOID; |
79072805 | 838 | |
11343788 | 839 | switch (o->op_type) { |
79072805 | 840 | default: |
22c35a8c | 841 | if (!(PL_opargs[o->op_type] & OA_FOLDCONST)) |
8990e307 | 842 | break; |
36477c24 | 843 | /* FALL THROUGH */ |
844 | case OP_REPEAT: | |
11343788 | 845 | if (o->op_flags & OPf_STACKED) |
8990e307 | 846 | break; |
5d82c453 GA |
847 | goto func_ops; |
848 | case OP_SUBSTR: | |
849 | if (o->op_private == 4) | |
850 | break; | |
8990e307 LW |
851 | /* FALL THROUGH */ |
852 | case OP_GVSV: | |
853 | case OP_WANTARRAY: | |
854 | case OP_GV: | |
855 | case OP_PADSV: | |
856 | case OP_PADAV: | |
857 | case OP_PADHV: | |
858 | case OP_PADANY: | |
859 | case OP_AV2ARYLEN: | |
8990e307 | 860 | case OP_REF: |
a0d0e21e LW |
861 | case OP_REFGEN: |
862 | case OP_SREFGEN: | |
8990e307 LW |
863 | case OP_DEFINED: |
864 | case OP_HEX: | |
865 | case OP_OCT: | |
866 | case OP_LENGTH: | |
8990e307 LW |
867 | case OP_VEC: |
868 | case OP_INDEX: | |
869 | case OP_RINDEX: | |
870 | case OP_SPRINTF: | |
871 | case OP_AELEM: | |
872 | case OP_AELEMFAST: | |
873 | case OP_ASLICE: | |
8990e307 LW |
874 | case OP_HELEM: |
875 | case OP_HSLICE: | |
876 | case OP_UNPACK: | |
877 | case OP_PACK: | |
8990e307 LW |
878 | case OP_JOIN: |
879 | case OP_LSLICE: | |
880 | case OP_ANONLIST: | |
881 | case OP_ANONHASH: | |
882 | case OP_SORT: | |
883 | case OP_REVERSE: | |
884 | case OP_RANGE: | |
885 | case OP_FLIP: | |
886 | case OP_FLOP: | |
887 | case OP_CALLER: | |
888 | case OP_FILENO: | |
889 | case OP_EOF: | |
890 | case OP_TELL: | |
891 | case OP_GETSOCKNAME: | |
892 | case OP_GETPEERNAME: | |
893 | case OP_READLINK: | |
894 | case OP_TELLDIR: | |
895 | case OP_GETPPID: | |
896 | case OP_GETPGRP: | |
897 | case OP_GETPRIORITY: | |
898 | case OP_TIME: | |
899 | case OP_TMS: | |
900 | case OP_LOCALTIME: | |
901 | case OP_GMTIME: | |
902 | case OP_GHBYNAME: | |
903 | case OP_GHBYADDR: | |
904 | case OP_GHOSTENT: | |
905 | case OP_GNBYNAME: | |
906 | case OP_GNBYADDR: | |
907 | case OP_GNETENT: | |
908 | case OP_GPBYNAME: | |
909 | case OP_GPBYNUMBER: | |
910 | case OP_GPROTOENT: | |
911 | case OP_GSBYNAME: | |
912 | case OP_GSBYPORT: | |
913 | case OP_GSERVENT: | |
914 | case OP_GPWNAM: | |
915 | case OP_GPWUID: | |
916 | case OP_GGRNAM: | |
917 | case OP_GGRGID: | |
918 | case OP_GETLOGIN: | |
5d82c453 | 919 | func_ops: |
11343788 | 920 | if (!(o->op_private & OPpLVAL_INTRO)) |
22c35a8c | 921 | useless = PL_op_desc[o->op_type]; |
8990e307 LW |
922 | break; |
923 | ||
924 | case OP_RV2GV: | |
925 | case OP_RV2SV: | |
926 | case OP_RV2AV: | |
927 | case OP_RV2HV: | |
11343788 MB |
928 | if (!(o->op_private & OPpLVAL_INTRO) && |
929 | (!o->op_sibling || o->op_sibling->op_type != OP_READLINE)) | |
8990e307 LW |
930 | useless = "a variable"; |
931 | break; | |
79072805 | 932 | |
93a17b20 | 933 | case OP_NEXTSTATE: |
8990e307 | 934 | case OP_DBSTATE: |
3280af22 | 935 | WITH_THR(PL_curcop = ((COP*)o)); /* for warning below */ |
93a17b20 LW |
936 | break; |
937 | ||
79072805 | 938 | case OP_CONST: |
11343788 | 939 | sv = cSVOPo->op_sv; |
d008e5eb GS |
940 | { |
941 | dTHR; | |
942 | if (ckWARN(WARN_VOID)) { | |
943 | useless = "a constant"; | |
944 | if (SvNIOK(sv) && (SvNV(sv) == 0.0 || SvNV(sv) == 1.0)) | |
945 | useless = 0; | |
946 | else if (SvPOK(sv)) { | |
947 | if (strnEQ(SvPVX(sv), "di", 2) || | |
948 | strnEQ(SvPVX(sv), "ds", 2) || | |
949 | strnEQ(SvPVX(sv), "ig", 2)) | |
950 | useless = 0; | |
951 | } | |
8990e307 LW |
952 | } |
953 | } | |
11343788 | 954 | null(o); /* don't execute a constant */ |
8990e307 | 955 | SvREFCNT_dec(sv); /* don't even remember it */ |
79072805 LW |
956 | break; |
957 | ||
958 | case OP_POSTINC: | |
11343788 | 959 | o->op_type = OP_PREINC; /* pre-increment is faster */ |
22c35a8c | 960 | o->op_ppaddr = PL_ppaddr[OP_PREINC]; |
79072805 LW |
961 | break; |
962 | ||
963 | case OP_POSTDEC: | |
11343788 | 964 | o->op_type = OP_PREDEC; /* pre-decrement is faster */ |
22c35a8c | 965 | o->op_ppaddr = PL_ppaddr[OP_PREDEC]; |
79072805 LW |
966 | break; |
967 | ||
79072805 LW |
968 | case OP_OR: |
969 | case OP_AND: | |
970 | case OP_COND_EXPR: | |
11343788 | 971 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
972 | scalarvoid(kid); |
973 | break; | |
5aabfad6 | 974 | |
a0d0e21e | 975 | case OP_NULL: |
11343788 | 976 | if (o->op_targ == OP_NEXTSTATE || o->op_targ == OP_DBSTATE) |
3280af22 | 977 | WITH_THR(PL_curcop = ((COP*)o)); /* for warning below */ |
11343788 | 978 | if (o->op_flags & OPf_STACKED) |
a0d0e21e | 979 | break; |
5aabfad6 | 980 | /* FALL THROUGH */ |
79072805 LW |
981 | case OP_ENTERTRY: |
982 | case OP_ENTER: | |
983 | case OP_SCALAR: | |
11343788 | 984 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 985 | break; |
54310121 | 986 | /* FALL THROUGH */ |
463ee0b2 | 987 | case OP_SCOPE: |
79072805 LW |
988 | case OP_LEAVE: |
989 | case OP_LEAVETRY: | |
a0d0e21e | 990 | case OP_LEAVELOOP: |
79072805 | 991 | case OP_LINESEQ: |
79072805 | 992 | case OP_LIST: |
11343788 | 993 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
994 | scalarvoid(kid); |
995 | break; | |
c90c0ff4 | 996 | case OP_ENTEREVAL: |
5196be3e | 997 | scalarkids(o); |
c90c0ff4 | 998 | break; |
5aabfad6 | 999 | case OP_REQUIRE: |
c90c0ff4 | 1000 | /* all requires must return a boolean value */ |
5196be3e MB |
1001 | o->op_flags &= ~OPf_WANT; |
1002 | return scalar(o); | |
a0d0e21e | 1003 | case OP_SPLIT: |
11343788 | 1004 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e LW |
1005 | if (!kPMOP->op_pmreplroot) |
1006 | deprecate("implicit split to @_"); | |
1007 | } | |
1008 | break; | |
79072805 | 1009 | } |
d008e5eb GS |
1010 | if (useless) { |
1011 | dTHR; | |
1012 | if (ckWARN(WARN_VOID)) | |
1013 | warner(WARN_VOID, "Useless use of %s in void context", useless); | |
1014 | } | |
11343788 | 1015 | return o; |
79072805 LW |
1016 | } |
1017 | ||
1018 | OP * | |
8ac85365 | 1019 | listkids(OP *o) |
79072805 LW |
1020 | { |
1021 | OP *kid; | |
11343788 MB |
1022 | if (o && o->op_flags & OPf_KIDS) { |
1023 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
79072805 LW |
1024 | list(kid); |
1025 | } | |
11343788 | 1026 | return o; |
79072805 LW |
1027 | } |
1028 | ||
1029 | OP * | |
8ac85365 | 1030 | list(OP *o) |
79072805 LW |
1031 | { |
1032 | OP *kid; | |
1033 | ||
a0d0e21e | 1034 | /* assumes no premature commitment */ |
3280af22 | 1035 | if (!o || (o->op_flags & OPf_WANT) || PL_error_count |
5dc0d613 | 1036 | || o->op_type == OP_RETURN) |
11343788 | 1037 | return o; |
79072805 | 1038 | |
5dc0d613 | 1039 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_LIST; |
79072805 | 1040 | |
11343788 | 1041 | switch (o->op_type) { |
79072805 LW |
1042 | case OP_FLOP: |
1043 | case OP_REPEAT: | |
11343788 | 1044 | list(cBINOPo->op_first); |
79072805 LW |
1045 | break; |
1046 | case OP_OR: | |
1047 | case OP_AND: | |
1048 | case OP_COND_EXPR: | |
11343788 | 1049 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
1050 | list(kid); |
1051 | break; | |
1052 | default: | |
1053 | case OP_MATCH: | |
8782bef2 | 1054 | case OP_QR: |
79072805 LW |
1055 | case OP_SUBST: |
1056 | case OP_NULL: | |
11343788 | 1057 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1058 | break; |
11343788 MB |
1059 | if (!o->op_next && cUNOPo->op_first->op_type == OP_FLOP) { |
1060 | list(cBINOPo->op_first); | |
1061 | return gen_constant_list(o); | |
79072805 LW |
1062 | } |
1063 | case OP_LIST: | |
11343788 | 1064 | listkids(o); |
79072805 LW |
1065 | break; |
1066 | case OP_LEAVE: | |
1067 | case OP_LEAVETRY: | |
5dc0d613 | 1068 | kid = cLISTOPo->op_first; |
54310121 | 1069 | list(kid); |
1070 | while (kid = kid->op_sibling) { | |
1071 | if (kid->op_sibling) | |
1072 | scalarvoid(kid); | |
1073 | else | |
1074 | list(kid); | |
1075 | } | |
3280af22 | 1076 | WITH_THR(PL_curcop = &PL_compiling); |
54310121 | 1077 | break; |
748a9306 | 1078 | case OP_SCOPE: |
79072805 | 1079 | case OP_LINESEQ: |
11343788 | 1080 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
1081 | if (kid->op_sibling) |
1082 | scalarvoid(kid); | |
1083 | else | |
1084 | list(kid); | |
1085 | } | |
3280af22 | 1086 | WITH_THR(PL_curcop = &PL_compiling); |
79072805 | 1087 | break; |
c90c0ff4 | 1088 | case OP_REQUIRE: |
1089 | /* all requires must return a boolean value */ | |
5196be3e MB |
1090 | o->op_flags &= ~OPf_WANT; |
1091 | return scalar(o); | |
79072805 | 1092 | } |
11343788 | 1093 | return o; |
79072805 LW |
1094 | } |
1095 | ||
1096 | OP * | |
8ac85365 | 1097 | scalarseq(OP *o) |
79072805 LW |
1098 | { |
1099 | OP *kid; | |
1100 | ||
11343788 MB |
1101 | if (o) { |
1102 | if (o->op_type == OP_LINESEQ || | |
1103 | o->op_type == OP_SCOPE || | |
1104 | o->op_type == OP_LEAVE || | |
1105 | o->op_type == OP_LEAVETRY) | |
463ee0b2 | 1106 | { |
0f15f207 | 1107 | dTHR; |
11343788 | 1108 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
ed6116ce | 1109 | if (kid->op_sibling) { |
463ee0b2 | 1110 | scalarvoid(kid); |
ed6116ce | 1111 | } |
463ee0b2 | 1112 | } |
3280af22 | 1113 | PL_curcop = &PL_compiling; |
79072805 | 1114 | } |
11343788 | 1115 | o->op_flags &= ~OPf_PARENS; |
3280af22 | 1116 | if (PL_hints & HINT_BLOCK_SCOPE) |
11343788 | 1117 | o->op_flags |= OPf_PARENS; |
79072805 | 1118 | } |
8990e307 | 1119 | else |
11343788 MB |
1120 | o = newOP(OP_STUB, 0); |
1121 | return o; | |
79072805 LW |
1122 | } |
1123 | ||
76e3520e | 1124 | STATIC OP * |
8ac85365 | 1125 | modkids(OP *o, I32 type) |
79072805 LW |
1126 | { |
1127 | OP *kid; | |
11343788 MB |
1128 | if (o && o->op_flags & OPf_KIDS) { |
1129 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
463ee0b2 | 1130 | mod(kid, type); |
79072805 | 1131 | } |
11343788 | 1132 | return o; |
79072805 LW |
1133 | } |
1134 | ||
79072805 | 1135 | OP * |
8ac85365 | 1136 | mod(OP *o, I32 type) |
79072805 | 1137 | { |
11343788 | 1138 | dTHR; |
79072805 LW |
1139 | OP *kid; |
1140 | SV *sv; | |
2d8e6c8d | 1141 | STRLEN n_a; |
79072805 | 1142 | |
3280af22 | 1143 | if (!o || PL_error_count) |
11343788 | 1144 | return o; |
79072805 | 1145 | |
11343788 | 1146 | switch (o->op_type) { |
68dc0745 | 1147 | case OP_UNDEF: |
3280af22 | 1148 | PL_modcount++; |
5dc0d613 | 1149 | return o; |
a0d0e21e | 1150 | case OP_CONST: |
11343788 | 1151 | if (!(o->op_private & (OPpCONST_ARYBASE))) |
a0d0e21e | 1152 | goto nomod; |
3280af22 NIS |
1153 | if (PL_eval_start && PL_eval_start->op_type == OP_CONST) { |
1154 | PL_compiling.cop_arybase = (I32)SvIV(((SVOP*)PL_eval_start)->op_sv); | |
1155 | PL_eval_start = 0; | |
a0d0e21e LW |
1156 | } |
1157 | else if (!type) { | |
3280af22 NIS |
1158 | SAVEI32(PL_compiling.cop_arybase); |
1159 | PL_compiling.cop_arybase = 0; | |
a0d0e21e LW |
1160 | } |
1161 | else if (type == OP_REFGEN) | |
1162 | goto nomod; | |
1163 | else | |
1164 | croak("That use of $[ is unsupported"); | |
1165 | break; | |
5f05dabc | 1166 | case OP_STUB: |
5196be3e | 1167 | if (o->op_flags & OPf_PARENS) |
5f05dabc | 1168 | break; |
1169 | goto nomod; | |
a0d0e21e LW |
1170 | case OP_ENTERSUB: |
1171 | if ((type == OP_UNDEF || type == OP_REFGEN) && | |
11343788 MB |
1172 | !(o->op_flags & OPf_STACKED)) { |
1173 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
22c35a8c | 1174 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 MB |
1175 | assert(cUNOPo->op_first->op_type == OP_NULL); |
1176 | null(((LISTOP*)cUNOPo->op_first)->op_first);/* disable pushmark */ | |
79072805 LW |
1177 | break; |
1178 | } | |
1179 | /* FALL THROUGH */ | |
1180 | default: | |
a0d0e21e LW |
1181 | nomod: |
1182 | /* grep, foreach, subcalls, refgen */ | |
1183 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) | |
1184 | break; | |
46fc3d4c | 1185 | yyerror(form("Can't modify %s in %s", |
638bc118 | 1186 | (o->op_type == OP_NULL && (o->op_flags & OPf_SPECIAL) |
22c35a8c GS |
1187 | ? "do block" : PL_op_desc[o->op_type]), |
1188 | type ? PL_op_desc[type] : "local")); | |
11343788 | 1189 | return o; |
79072805 | 1190 | |
a0d0e21e LW |
1191 | case OP_PREINC: |
1192 | case OP_PREDEC: | |
1193 | case OP_POW: | |
1194 | case OP_MULTIPLY: | |
1195 | case OP_DIVIDE: | |
1196 | case OP_MODULO: | |
1197 | case OP_REPEAT: | |
1198 | case OP_ADD: | |
1199 | case OP_SUBTRACT: | |
1200 | case OP_CONCAT: | |
1201 | case OP_LEFT_SHIFT: | |
1202 | case OP_RIGHT_SHIFT: | |
1203 | case OP_BIT_AND: | |
1204 | case OP_BIT_XOR: | |
1205 | case OP_BIT_OR: | |
1206 | case OP_I_MULTIPLY: | |
1207 | case OP_I_DIVIDE: | |
1208 | case OP_I_MODULO: | |
1209 | case OP_I_ADD: | |
1210 | case OP_I_SUBTRACT: | |
11343788 | 1211 | if (!(o->op_flags & OPf_STACKED)) |
a0d0e21e | 1212 | goto nomod; |
3280af22 | 1213 | PL_modcount++; |
a0d0e21e LW |
1214 | break; |
1215 | ||
79072805 | 1216 | case OP_COND_EXPR: |
11343788 | 1217 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 | 1218 | mod(kid, type); |
79072805 LW |
1219 | break; |
1220 | ||
1221 | case OP_RV2AV: | |
1222 | case OP_RV2HV: | |
93af7a87 | 1223 | if (!type && cUNOPo->op_first->op_type != OP_GV) |
706a304b | 1224 | croak("Can't localize through a reference"); |
11343788 | 1225 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) { |
3280af22 | 1226 | PL_modcount = 10000; |
11343788 | 1227 | return o; /* Treat \(@foo) like ordinary list. */ |
748a9306 LW |
1228 | } |
1229 | /* FALL THROUGH */ | |
79072805 | 1230 | case OP_RV2GV: |
5dc0d613 | 1231 | if (scalar_mod_type(o, type)) |
3fe9a6f1 | 1232 | goto nomod; |
11343788 | 1233 | ref(cUNOPo->op_first, o->op_type); |
79072805 LW |
1234 | /* FALL THROUGH */ |
1235 | case OP_AASSIGN: | |
1236 | case OP_ASLICE: | |
1237 | case OP_HSLICE: | |
93a17b20 LW |
1238 | case OP_NEXTSTATE: |
1239 | case OP_DBSTATE: | |
a0d0e21e LW |
1240 | case OP_REFGEN: |
1241 | case OP_CHOMP: | |
3280af22 | 1242 | PL_modcount = 10000; |
79072805 | 1243 | break; |
463ee0b2 | 1244 | case OP_RV2SV: |
11343788 | 1245 | if (!type && cUNOPo->op_first->op_type != OP_GV) |
706a304b | 1246 | croak("Can't localize through a reference"); |
aeea060c | 1247 | ref(cUNOPo->op_first, o->op_type); |
463ee0b2 | 1248 | /* FALL THROUGH */ |
79072805 | 1249 | case OP_GV: |
463ee0b2 | 1250 | case OP_AV2ARYLEN: |
3280af22 | 1251 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 1252 | case OP_SASSIGN: |
bf4b1e52 GS |
1253 | case OP_ANDASSIGN: |
1254 | case OP_ORASSIGN: | |
8990e307 | 1255 | case OP_AELEMFAST: |
3280af22 | 1256 | PL_modcount++; |
8990e307 LW |
1257 | break; |
1258 | ||
748a9306 LW |
1259 | case OP_PADAV: |
1260 | case OP_PADHV: | |
3280af22 | 1261 | PL_modcount = 10000; |
5196be3e MB |
1262 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) |
1263 | return o; /* Treat \(@foo) like ordinary list. */ | |
1264 | if (scalar_mod_type(o, type)) | |
3fe9a6f1 | 1265 | goto nomod; |
748a9306 LW |
1266 | /* FALL THROUGH */ |
1267 | case OP_PADSV: | |
3280af22 | 1268 | PL_modcount++; |
748a9306 LW |
1269 | if (!type) |
1270 | croak("Can't localize lexical variable %s", | |
2d8e6c8d | 1271 | SvPV(*av_fetch(PL_comppad_name, o->op_targ, 4), n_a)); |
463ee0b2 LW |
1272 | break; |
1273 | ||
554b3eca | 1274 | #ifdef USE_THREADS |
2faa37cc | 1275 | case OP_THREADSV: |
533c011a | 1276 | PL_modcount++; /* XXX ??? */ |
554b3eca MB |
1277 | break; |
1278 | #endif /* USE_THREADS */ | |
1279 | ||
748a9306 LW |
1280 | case OP_PUSHMARK: |
1281 | break; | |
a0d0e21e | 1282 | |
69969c6f SB |
1283 | case OP_KEYS: |
1284 | if (type != OP_SASSIGN) | |
1285 | goto nomod; | |
5d82c453 GA |
1286 | goto lvalue_func; |
1287 | case OP_SUBSTR: | |
1288 | if (o->op_private == 4) /* don't allow 4 arg substr as lvalue */ | |
1289 | goto nomod; | |
5f05dabc | 1290 | /* FALL THROUGH */ |
a0d0e21e | 1291 | case OP_POS: |
463ee0b2 | 1292 | case OP_VEC: |
5d82c453 | 1293 | lvalue_func: |
11343788 MB |
1294 | pad_free(o->op_targ); |
1295 | o->op_targ = pad_alloc(o->op_type, SVs_PADMY); | |
5dc0d613 | 1296 | assert(SvTYPE(PAD_SV(o->op_targ)) == SVt_NULL); |
11343788 MB |
1297 | if (o->op_flags & OPf_KIDS) |
1298 | mod(cBINOPo->op_first->op_sibling, type); | |
463ee0b2 | 1299 | break; |
a0d0e21e | 1300 | |
463ee0b2 LW |
1301 | case OP_AELEM: |
1302 | case OP_HELEM: | |
11343788 | 1303 | ref(cBINOPo->op_first, o->op_type); |
68dc0745 | 1304 | if (type == OP_ENTERSUB && |
5dc0d613 MB |
1305 | !(o->op_private & (OPpLVAL_INTRO | OPpDEREF))) |
1306 | o->op_private |= OPpLVAL_DEFER; | |
3280af22 | 1307 | PL_modcount++; |
463ee0b2 LW |
1308 | break; |
1309 | ||
1310 | case OP_SCOPE: | |
1311 | case OP_LEAVE: | |
1312 | case OP_ENTER: | |
11343788 MB |
1313 | if (o->op_flags & OPf_KIDS) |
1314 | mod(cLISTOPo->op_last, type); | |
a0d0e21e LW |
1315 | break; |
1316 | ||
1317 | case OP_NULL: | |
638bc118 GS |
1318 | if (o->op_flags & OPf_SPECIAL) /* do BLOCK */ |
1319 | goto nomod; | |
1320 | else if (!(o->op_flags & OPf_KIDS)) | |
463ee0b2 | 1321 | break; |
11343788 MB |
1322 | if (o->op_targ != OP_LIST) { |
1323 | mod(cBINOPo->op_first, type); | |
a0d0e21e LW |
1324 | break; |
1325 | } | |
1326 | /* FALL THROUGH */ | |
463ee0b2 | 1327 | case OP_LIST: |
11343788 | 1328 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1329 | mod(kid, type); |
1330 | break; | |
1331 | } | |
11343788 | 1332 | o->op_flags |= OPf_MOD; |
a0d0e21e LW |
1333 | |
1334 | if (type == OP_AASSIGN || type == OP_SASSIGN) | |
11343788 | 1335 | o->op_flags |= OPf_SPECIAL|OPf_REF; |
a0d0e21e | 1336 | else if (!type) { |
11343788 MB |
1337 | o->op_private |= OPpLVAL_INTRO; |
1338 | o->op_flags &= ~OPf_SPECIAL; | |
3280af22 | 1339 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 1340 | } |
a0d0e21e | 1341 | else if (type != OP_GREPSTART && type != OP_ENTERSUB) |
11343788 MB |
1342 | o->op_flags |= OPf_REF; |
1343 | return o; | |
463ee0b2 LW |
1344 | } |
1345 | ||
3fe9a6f1 | 1346 | static bool |
8ac85365 | 1347 | scalar_mod_type(OP *o, I32 type) |
3fe9a6f1 | 1348 | { |
1349 | switch (type) { | |
1350 | case OP_SASSIGN: | |
5196be3e | 1351 | if (o->op_type == OP_RV2GV) |
3fe9a6f1 | 1352 | return FALSE; |
1353 | /* FALL THROUGH */ | |
1354 | case OP_PREINC: | |
1355 | case OP_PREDEC: | |
1356 | case OP_POSTINC: | |
1357 | case OP_POSTDEC: | |
1358 | case OP_I_PREINC: | |
1359 | case OP_I_PREDEC: | |
1360 | case OP_I_POSTINC: | |
1361 | case OP_I_POSTDEC: | |
1362 | case OP_POW: | |
1363 | case OP_MULTIPLY: | |
1364 | case OP_DIVIDE: | |
1365 | case OP_MODULO: | |
1366 | case OP_REPEAT: | |
1367 | case OP_ADD: | |
1368 | case OP_SUBTRACT: | |
1369 | case OP_I_MULTIPLY: | |
1370 | case OP_I_DIVIDE: | |
1371 | case OP_I_MODULO: | |
1372 | case OP_I_ADD: | |
1373 | case OP_I_SUBTRACT: | |
1374 | case OP_LEFT_SHIFT: | |
1375 | case OP_RIGHT_SHIFT: | |
1376 | case OP_BIT_AND: | |
1377 | case OP_BIT_XOR: | |
1378 | case OP_BIT_OR: | |
1379 | case OP_CONCAT: | |
1380 | case OP_SUBST: | |
1381 | case OP_TRANS: | |
49e9fbe6 GS |
1382 | case OP_READ: |
1383 | case OP_SYSREAD: | |
1384 | case OP_RECV: | |
bf4b1e52 GS |
1385 | case OP_ANDASSIGN: |
1386 | case OP_ORASSIGN: | |
3fe9a6f1 | 1387 | return TRUE; |
1388 | default: | |
1389 | return FALSE; | |
1390 | } | |
1391 | } | |
1392 | ||
35cd451c GS |
1393 | STATIC bool |
1394 | is_handle_constructor(OP *o, I32 argnum) | |
1395 | { | |
1396 | switch (o->op_type) { | |
1397 | case OP_PIPE_OP: | |
1398 | case OP_SOCKPAIR: | |
1399 | if (argnum == 2) | |
1400 | return TRUE; | |
1401 | /* FALL THROUGH */ | |
1402 | case OP_SYSOPEN: | |
1403 | case OP_OPEN: | |
ded8aa31 | 1404 | case OP_SELECT: /* XXX c.f. SelectSaver.pm */ |
35cd451c GS |
1405 | case OP_SOCKET: |
1406 | case OP_OPEN_DIR: | |
1407 | case OP_ACCEPT: | |
1408 | if (argnum == 1) | |
1409 | return TRUE; | |
1410 | /* FALL THROUGH */ | |
1411 | default: | |
1412 | return FALSE; | |
1413 | } | |
1414 | } | |
1415 | ||
463ee0b2 | 1416 | OP * |
8ac85365 | 1417 | refkids(OP *o, I32 type) |
463ee0b2 LW |
1418 | { |
1419 | OP *kid; | |
11343788 MB |
1420 | if (o && o->op_flags & OPf_KIDS) { |
1421 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
463ee0b2 LW |
1422 | ref(kid, type); |
1423 | } | |
11343788 | 1424 | return o; |
463ee0b2 LW |
1425 | } |
1426 | ||
1427 | OP * | |
8ac85365 | 1428 | ref(OP *o, I32 type) |
463ee0b2 LW |
1429 | { |
1430 | OP *kid; | |
463ee0b2 | 1431 | |
3280af22 | 1432 | if (!o || PL_error_count) |
11343788 | 1433 | return o; |
463ee0b2 | 1434 | |
11343788 | 1435 | switch (o->op_type) { |
a0d0e21e | 1436 | case OP_ENTERSUB: |
e55aaa0e | 1437 | if ((type == OP_DEFINED || type == OP_LOCK) && |
11343788 MB |
1438 | !(o->op_flags & OPf_STACKED)) { |
1439 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
22c35a8c | 1440 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 MB |
1441 | assert(cUNOPo->op_first->op_type == OP_NULL); |
1442 | null(((LISTOP*)cUNOPo->op_first)->op_first); /* disable pushmark */ | |
1443 | o->op_flags |= OPf_SPECIAL; | |
8990e307 LW |
1444 | } |
1445 | break; | |
aeea060c | 1446 | |
463ee0b2 | 1447 | case OP_COND_EXPR: |
11343788 | 1448 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1449 | ref(kid, type); |
1450 | break; | |
8990e307 | 1451 | case OP_RV2SV: |
35cd451c GS |
1452 | if (type == OP_DEFINED) |
1453 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
11343788 | 1454 | ref(cUNOPo->op_first, o->op_type); |
4633a7c4 LW |
1455 | /* FALL THROUGH */ |
1456 | case OP_PADSV: | |
5f05dabc | 1457 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1458 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1459 | : type == OP_RV2HV ? OPpDEREF_HV | |
1460 | : OPpDEREF_SV); | |
11343788 | 1461 | o->op_flags |= OPf_MOD; |
a0d0e21e | 1462 | } |
8990e307 LW |
1463 | break; |
1464 | ||
2faa37cc | 1465 | case OP_THREADSV: |
a863c7d1 MB |
1466 | o->op_flags |= OPf_MOD; /* XXX ??? */ |
1467 | break; | |
1468 | ||
463ee0b2 LW |
1469 | case OP_RV2AV: |
1470 | case OP_RV2HV: | |
aeea060c | 1471 | o->op_flags |= OPf_REF; |
8990e307 | 1472 | /* FALL THROUGH */ |
463ee0b2 | 1473 | case OP_RV2GV: |
35cd451c GS |
1474 | if (type == OP_DEFINED) |
1475 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
11343788 | 1476 | ref(cUNOPo->op_first, o->op_type); |
463ee0b2 | 1477 | break; |
8990e307 | 1478 | |
463ee0b2 LW |
1479 | case OP_PADAV: |
1480 | case OP_PADHV: | |
aeea060c | 1481 | o->op_flags |= OPf_REF; |
79072805 | 1482 | break; |
aeea060c | 1483 | |
8990e307 | 1484 | case OP_SCALAR: |
79072805 | 1485 | case OP_NULL: |
11343788 | 1486 | if (!(o->op_flags & OPf_KIDS)) |
463ee0b2 | 1487 | break; |
11343788 | 1488 | ref(cBINOPo->op_first, type); |
79072805 LW |
1489 | break; |
1490 | case OP_AELEM: | |
1491 | case OP_HELEM: | |
11343788 | 1492 | ref(cBINOPo->op_first, o->op_type); |
5f05dabc | 1493 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1494 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1495 | : type == OP_RV2HV ? OPpDEREF_HV | |
1496 | : OPpDEREF_SV); | |
11343788 | 1497 | o->op_flags |= OPf_MOD; |
8990e307 | 1498 | } |
79072805 LW |
1499 | break; |
1500 | ||
463ee0b2 | 1501 | case OP_SCOPE: |
79072805 LW |
1502 | case OP_LEAVE: |
1503 | case OP_ENTER: | |
8990e307 | 1504 | case OP_LIST: |
11343788 | 1505 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1506 | break; |
11343788 | 1507 | ref(cLISTOPo->op_last, type); |
79072805 | 1508 | break; |
a0d0e21e LW |
1509 | default: |
1510 | break; | |
79072805 | 1511 | } |
11343788 | 1512 | return scalar(o); |
8990e307 | 1513 | |
79072805 LW |
1514 | } |
1515 | ||
1516 | OP * | |
8ac85365 | 1517 | my(OP *o) |
93a17b20 LW |
1518 | { |
1519 | OP *kid; | |
93a17b20 LW |
1520 | I32 type; |
1521 | ||
3280af22 | 1522 | if (!o || PL_error_count) |
11343788 | 1523 | return o; |
93a17b20 | 1524 | |
11343788 | 1525 | type = o->op_type; |
93a17b20 | 1526 | if (type == OP_LIST) { |
11343788 | 1527 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
93a17b20 | 1528 | my(kid); |
dab48698 | 1529 | } else if (type == OP_UNDEF) { |
7766148a | 1530 | return o; |
dab48698 | 1531 | } else if (type != OP_PADSV && |
93a17b20 LW |
1532 | type != OP_PADAV && |
1533 | type != OP_PADHV && | |
1534 | type != OP_PUSHMARK) | |
1535 | { | |
22c35a8c | 1536 | yyerror(form("Can't declare %s in my", PL_op_desc[o->op_type])); |
11343788 | 1537 | return o; |
93a17b20 | 1538 | } |
11343788 MB |
1539 | o->op_flags |= OPf_MOD; |
1540 | o->op_private |= OPpLVAL_INTRO; | |
1541 | return o; | |
93a17b20 LW |
1542 | } |
1543 | ||
1544 | OP * | |
8ac85365 | 1545 | sawparens(OP *o) |
79072805 LW |
1546 | { |
1547 | if (o) | |
1548 | o->op_flags |= OPf_PARENS; | |
1549 | return o; | |
1550 | } | |
1551 | ||
1552 | OP * | |
8ac85365 | 1553 | bind_match(I32 type, OP *left, OP *right) |
79072805 | 1554 | { |
d008e5eb | 1555 | dTHR; |
11343788 | 1556 | OP *o; |
79072805 | 1557 | |
599cee73 PM |
1558 | if (ckWARN(WARN_UNSAFE) && |
1559 | (left->op_type == OP_RV2AV || | |
1560 | left->op_type == OP_RV2HV || | |
1561 | left->op_type == OP_PADAV || | |
1562 | left->op_type == OP_PADHV)) { | |
22c35a8c | 1563 | char *desc = PL_op_desc[(right->op_type == OP_SUBST || |
599cee73 PM |
1564 | right->op_type == OP_TRANS) |
1565 | ? right->op_type : OP_MATCH]; | |
1566 | char *sample = ((left->op_type == OP_RV2AV || | |
1567 | left->op_type == OP_PADAV) | |
1568 | ? "@array" : "%hash"); | |
1569 | warner(WARN_UNSAFE, | |
1570 | "Applying %s to %s will act on scalar(%s)", | |
1571 | desc, sample, sample); | |
2ae324a7 | 1572 | } |
1573 | ||
79072805 LW |
1574 | if (right->op_type == OP_MATCH || |
1575 | right->op_type == OP_SUBST || | |
1576 | right->op_type == OP_TRANS) { | |
1577 | right->op_flags |= OPf_STACKED; | |
1578 | if (right->op_type != OP_MATCH) | |
463ee0b2 | 1579 | left = mod(left, right->op_type); |
79072805 | 1580 | if (right->op_type == OP_TRANS) |
11343788 | 1581 | o = newBINOP(OP_NULL, OPf_STACKED, scalar(left), right); |
79072805 | 1582 | else |
11343788 | 1583 | o = prepend_elem(right->op_type, scalar(left), right); |
79072805 | 1584 | if (type == OP_NOT) |
11343788 MB |
1585 | return newUNOP(OP_NOT, 0, scalar(o)); |
1586 | return o; | |
79072805 LW |
1587 | } |
1588 | else | |
1589 | return bind_match(type, left, | |
1590 | pmruntime(newPMOP(OP_MATCH, 0), right, Nullop)); | |
1591 | } | |
1592 | ||
1593 | OP * | |
8ac85365 | 1594 | invert(OP *o) |
79072805 | 1595 | { |
11343788 MB |
1596 | if (!o) |
1597 | return o; | |
79072805 | 1598 | /* XXX need to optimize away NOT NOT here? Or do we let optimizer do it? */ |
11343788 | 1599 | return newUNOP(OP_NOT, OPf_SPECIAL, scalar(o)); |
79072805 LW |
1600 | } |
1601 | ||
1602 | OP * | |
8ac85365 | 1603 | scope(OP *o) |
79072805 LW |
1604 | { |
1605 | if (o) { | |
3280af22 | 1606 | if (o->op_flags & OPf_PARENS || PERLDB_NOOPT || PL_tainting) { |
463ee0b2 LW |
1607 | o = prepend_elem(OP_LINESEQ, newOP(OP_ENTER, 0), o); |
1608 | o->op_type = OP_LEAVE; | |
22c35a8c | 1609 | o->op_ppaddr = PL_ppaddr[OP_LEAVE]; |
463ee0b2 LW |
1610 | } |
1611 | else { | |
1612 | if (o->op_type == OP_LINESEQ) { | |
1613 | OP *kid; | |
1614 | o->op_type = OP_SCOPE; | |
22c35a8c | 1615 | o->op_ppaddr = PL_ppaddr[OP_SCOPE]; |
463ee0b2 | 1616 | kid = ((LISTOP*)o)->op_first; |
748a9306 LW |
1617 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE){ |
1618 | SvREFCNT_dec(((COP*)kid)->cop_filegv); | |
8990e307 | 1619 | null(kid); |
748a9306 | 1620 | } |
463ee0b2 LW |
1621 | } |
1622 | else | |
748a9306 | 1623 | o = newLISTOP(OP_SCOPE, 0, o, Nullop); |
463ee0b2 | 1624 | } |
79072805 LW |
1625 | } |
1626 | return o; | |
1627 | } | |
1628 | ||
b3ac6de7 IZ |
1629 | void |
1630 | save_hints(void) | |
1631 | { | |
3280af22 NIS |
1632 | SAVEI32(PL_hints); |
1633 | SAVESPTR(GvHV(PL_hintgv)); | |
1634 | GvHV(PL_hintgv) = newHVhv(GvHV(PL_hintgv)); | |
1635 | SAVEFREESV(GvHV(PL_hintgv)); | |
b3ac6de7 IZ |
1636 | } |
1637 | ||
a0d0e21e | 1638 | int |
8ac85365 | 1639 | block_start(int full) |
79072805 | 1640 | { |
11343788 | 1641 | dTHR; |
3280af22 | 1642 | int retval = PL_savestack_ix; |
b3ac6de7 | 1643 | |
3280af22 | 1644 | SAVEI32(PL_comppad_name_floor); |
55497cff | 1645 | if (full) { |
3280af22 NIS |
1646 | if ((PL_comppad_name_fill = AvFILLp(PL_comppad_name)) > 0) |
1647 | PL_comppad_name_floor = PL_comppad_name_fill; | |
55497cff | 1648 | else |
3280af22 NIS |
1649 | PL_comppad_name_floor = 0; |
1650 | } | |
1651 | SAVEI32(PL_min_intro_pending); | |
1652 | SAVEI32(PL_max_intro_pending); | |
1653 | PL_min_intro_pending = 0; | |
1654 | SAVEI32(PL_comppad_name_fill); | |
1655 | SAVEI32(PL_padix_floor); | |
1656 | PL_padix_floor = PL_padix; | |
1657 | PL_pad_reset_pending = FALSE; | |
b3ac6de7 | 1658 | SAVEHINTS(); |
3280af22 | 1659 | PL_hints &= ~HINT_BLOCK_SCOPE; |
e24b16f9 | 1660 | SAVEPPTR(PL_compiling.cop_warnings); |
599cee73 PM |
1661 | if (PL_compiling.cop_warnings != WARN_ALL && |
1662 | PL_compiling.cop_warnings != WARN_NONE) { | |
1663 | PL_compiling.cop_warnings = newSVsv(PL_compiling.cop_warnings) ; | |
1664 | SAVEFREESV(PL_compiling.cop_warnings) ; | |
1665 | } | |
1666 | ||
1667 | ||
a0d0e21e LW |
1668 | return retval; |
1669 | } | |
1670 | ||
1671 | OP* | |
8ac85365 | 1672 | block_end(I32 floor, OP *seq) |
a0d0e21e | 1673 | { |
11343788 | 1674 | dTHR; |
3280af22 | 1675 | int needblockscope = PL_hints & HINT_BLOCK_SCOPE; |
a0d0e21e | 1676 | OP* retval = scalarseq(seq); |
a0d0e21e | 1677 | LEAVE_SCOPE(floor); |
3280af22 | 1678 | PL_pad_reset_pending = FALSE; |
e24b16f9 | 1679 | PL_compiling.op_private = PL_hints; |
a0d0e21e | 1680 | if (needblockscope) |
3280af22 NIS |
1681 | PL_hints |= HINT_BLOCK_SCOPE; /* propagate out */ |
1682 | pad_leavemy(PL_comppad_name_fill); | |
1683 | PL_cop_seqmax++; | |
a0d0e21e LW |
1684 | return retval; |
1685 | } | |
1686 | ||
76e3520e | 1687 | STATIC OP * |
54b9620d MB |
1688 | newDEFSVOP(void) |
1689 | { | |
1690 | #ifdef USE_THREADS | |
1691 | OP *o = newOP(OP_THREADSV, 0); | |
1692 | o->op_targ = find_threadsv("_"); | |
1693 | return o; | |
1694 | #else | |
3280af22 | 1695 | return newSVREF(newGVOP(OP_GV, 0, PL_defgv)); |
54b9620d MB |
1696 | #endif /* USE_THREADS */ |
1697 | } | |
1698 | ||
a0d0e21e | 1699 | void |
8ac85365 | 1700 | newPROG(OP *o) |
a0d0e21e | 1701 | { |
11343788 | 1702 | dTHR; |
3280af22 NIS |
1703 | if (PL_in_eval) { |
1704 | PL_eval_root = newUNOP(OP_LEAVEEVAL, ((PL_in_eval & 4) ? OPf_SPECIAL : 0), o); | |
1705 | PL_eval_start = linklist(PL_eval_root); | |
1706 | PL_eval_root->op_next = 0; | |
1707 | peep(PL_eval_start); | |
a0d0e21e LW |
1708 | } |
1709 | else { | |
5dc0d613 | 1710 | if (!o) |
a0d0e21e | 1711 | return; |
3280af22 NIS |
1712 | PL_main_root = scope(sawparens(scalarvoid(o))); |
1713 | PL_curcop = &PL_compiling; | |
1714 | PL_main_start = LINKLIST(PL_main_root); | |
1715 | PL_main_root->op_next = 0; | |
1716 | peep(PL_main_start); | |
1717 | PL_compcv = 0; | |
3841441e | 1718 | |
4fdae800 | 1719 | /* Register with debugger */ |
84902520 | 1720 | if (PERLDB_INTER) { |
3841441e | 1721 | CV *cv = perl_get_cv("DB::postponed", FALSE); |
3841441e CS |
1722 | if (cv) { |
1723 | dSP; | |
924508f0 | 1724 | PUSHMARK(SP); |
3280af22 | 1725 | XPUSHs((SV*)PL_compiling.cop_filegv); |
3841441e CS |
1726 | PUTBACK; |
1727 | perl_call_sv((SV*)cv, G_DISCARD); | |
1728 | } | |
1729 | } | |
79072805 | 1730 | } |
79072805 LW |
1731 | } |
1732 | ||
1733 | OP * | |
8ac85365 | 1734 | localize(OP *o, I32 lex) |
79072805 LW |
1735 | { |
1736 | if (o->op_flags & OPf_PARENS) | |
1737 | list(o); | |
8990e307 | 1738 | else { |
d008e5eb | 1739 | dTHR; |
599cee73 | 1740 | if (ckWARN(WARN_PARENTHESIS) && PL_bufptr > PL_oldbufptr && PL_bufptr[-1] == ',') { |
8990e307 | 1741 | char *s; |
834a4ddd | 1742 | for (s = PL_bufptr; *s && (isALNUM(*s) || (*s & 0x80) || strchr("@$%, ",*s)); s++) ; |
a0d0e21e | 1743 | if (*s == ';' || *s == '=') |
752ebe84 | 1744 | warner(WARN_PARENTHESIS, "Parentheses missing around \"%s\" list", |
599cee73 | 1745 | lex ? "my" : "local"); |
8990e307 LW |
1746 | } |
1747 | } | |
3280af22 NIS |
1748 | PL_in_my = FALSE; |
1749 | PL_in_my_stash = Nullhv; | |
93a17b20 LW |
1750 | if (lex) |
1751 | return my(o); | |
1752 | else | |
463ee0b2 | 1753 | return mod(o, OP_NULL); /* a bit kludgey */ |
79072805 LW |
1754 | } |
1755 | ||
1756 | OP * | |
8ac85365 | 1757 | jmaybe(OP *o) |
79072805 LW |
1758 | { |
1759 | if (o->op_type == OP_LIST) { | |
554b3eca MB |
1760 | OP *o2; |
1761 | #ifdef USE_THREADS | |
2faa37cc | 1762 | o2 = newOP(OP_THREADSV, 0); |
54b9620d | 1763 | o2->op_targ = find_threadsv(";"); |
554b3eca MB |
1764 | #else |
1765 | o2 = newSVREF(newGVOP(OP_GV, 0, gv_fetchpv(";", TRUE, SVt_PV))), | |
1766 | #endif /* USE_THREADS */ | |
1767 | o = convert(OP_JOIN, 0, prepend_elem(OP_LIST, o2, o)); | |
79072805 LW |
1768 | } |
1769 | return o; | |
1770 | } | |
1771 | ||
1772 | OP * | |
8ac85365 | 1773 | fold_constants(register OP *o) |
79072805 | 1774 | { |
11343788 | 1775 | dTHR; |
79072805 LW |
1776 | register OP *curop; |
1777 | I32 type = o->op_type; | |
748a9306 | 1778 | SV *sv; |
79072805 | 1779 | |
22c35a8c | 1780 | if (PL_opargs[type] & OA_RETSCALAR) |
79072805 | 1781 | scalar(o); |
22c35a8c | 1782 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 1783 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 | 1784 | |
22c35a8c GS |
1785 | if ((PL_opargs[type] & OA_OTHERINT) && (PL_hints & HINT_INTEGER)) |
1786 | o->op_ppaddr = PL_ppaddr[type = ++(o->op_type)]; | |
85e6fe83 | 1787 | |
22c35a8c | 1788 | if (!(PL_opargs[type] & OA_FOLDCONST)) |
79072805 LW |
1789 | goto nope; |
1790 | ||
de939608 CS |
1791 | switch (type) { |
1792 | case OP_SPRINTF: | |
1793 | case OP_UCFIRST: | |
1794 | case OP_LCFIRST: | |
1795 | case OP_UC: | |
1796 | case OP_LC: | |
69dcf70c MB |
1797 | case OP_SLT: |
1798 | case OP_SGT: | |
1799 | case OP_SLE: | |
1800 | case OP_SGE: | |
1801 | case OP_SCMP: | |
1802 | ||
de939608 CS |
1803 | if (o->op_private & OPpLOCALE) |
1804 | goto nope; | |
1805 | } | |
1806 | ||
3280af22 | 1807 | if (PL_error_count) |
a0d0e21e LW |
1808 | goto nope; /* Don't try to run w/ errors */ |
1809 | ||
79072805 | 1810 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
93a17b20 LW |
1811 | if (curop->op_type != OP_CONST && |
1812 | curop->op_type != OP_LIST && | |
1813 | curop->op_type != OP_SCALAR && | |
a0d0e21e | 1814 | curop->op_type != OP_NULL && |
93a17b20 | 1815 | curop->op_type != OP_PUSHMARK) { |
79072805 LW |
1816 | goto nope; |
1817 | } | |
1818 | } | |
1819 | ||
1820 | curop = LINKLIST(o); | |
1821 | o->op_next = 0; | |
533c011a | 1822 | PL_op = curop; |
76e3520e | 1823 | CALLRUNOPS(); |
3280af22 | 1824 | sv = *(PL_stack_sp--); |
748a9306 | 1825 | if (o->op_targ && sv == PAD_SV(o->op_targ)) /* grab pad temp? */ |
79072805 | 1826 | pad_swipe(o->op_targ); |
748a9306 LW |
1827 | else if (SvTEMP(sv)) { /* grab mortal temp? */ |
1828 | (void)SvREFCNT_inc(sv); | |
1829 | SvTEMP_off(sv); | |
85e6fe83 | 1830 | } |
79072805 LW |
1831 | op_free(o); |
1832 | if (type == OP_RV2GV) | |
b1cb66bf | 1833 | return newGVOP(OP_GV, 0, (GV*)sv); |
748a9306 | 1834 | else { |
ee580363 GS |
1835 | /* try to smush double to int, but don't smush -2.0 to -2 */ |
1836 | if ((SvFLAGS(sv) & (SVf_IOK|SVf_NOK|SVf_POK)) == SVf_NOK && | |
1837 | type != OP_NEGATE) | |
1838 | { | |
748a9306 | 1839 | IV iv = SvIV(sv); |
ee580363 | 1840 | if ((double)iv == SvNV(sv)) { |
748a9306 LW |
1841 | SvREFCNT_dec(sv); |
1842 | sv = newSViv(iv); | |
1843 | } | |
b1cb66bf | 1844 | else |
1845 | SvIOK_off(sv); /* undo SvIV() damage */ | |
748a9306 LW |
1846 | } |
1847 | return newSVOP(OP_CONST, 0, sv); | |
1848 | } | |
aeea060c | 1849 | |
79072805 | 1850 | nope: |
22c35a8c | 1851 | if (!(PL_opargs[type] & OA_OTHERINT)) |
79072805 | 1852 | return o; |
79072805 | 1853 | |
3280af22 | 1854 | if (!(PL_hints & HINT_INTEGER)) { |
a0d0e21e | 1855 | if (type == OP_DIVIDE || !(o->op_flags & OPf_KIDS)) |
85e6fe83 LW |
1856 | return o; |
1857 | ||
1858 | for (curop = ((UNOP*)o)->op_first; curop; curop = curop->op_sibling) { | |
1859 | if (curop->op_type == OP_CONST) { | |
b1cb66bf | 1860 | if (SvIOK(((SVOP*)curop)->op_sv)) |
85e6fe83 LW |
1861 | continue; |
1862 | return o; | |
1863 | } | |
22c35a8c | 1864 | if (PL_opargs[curop->op_type] & OA_RETINTEGER) |
79072805 LW |
1865 | continue; |
1866 | return o; | |
1867 | } | |
22c35a8c | 1868 | o->op_ppaddr = PL_ppaddr[++(o->op_type)]; |
79072805 LW |
1869 | } |
1870 | ||
79072805 LW |
1871 | return o; |
1872 | } | |
1873 | ||
1874 | OP * | |
8ac85365 | 1875 | gen_constant_list(register OP *o) |
79072805 | 1876 | { |
11343788 | 1877 | dTHR; |
79072805 | 1878 | register OP *curop; |
3280af22 | 1879 | I32 oldtmps_floor = PL_tmps_floor; |
79072805 | 1880 | |
a0d0e21e | 1881 | list(o); |
3280af22 | 1882 | if (PL_error_count) |
a0d0e21e LW |
1883 | return o; /* Don't attempt to run with errors */ |
1884 | ||
533c011a | 1885 | PL_op = curop = LINKLIST(o); |
a0d0e21e | 1886 | o->op_next = 0; |
11343788 | 1887 | pp_pushmark(ARGS); |
76e3520e | 1888 | CALLRUNOPS(); |
533c011a | 1889 | PL_op = curop; |
11343788 | 1890 | pp_anonlist(ARGS); |
3280af22 | 1891 | PL_tmps_floor = oldtmps_floor; |
79072805 LW |
1892 | |
1893 | o->op_type = OP_RV2AV; | |
22c35a8c | 1894 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
79072805 | 1895 | curop = ((UNOP*)o)->op_first; |
3280af22 | 1896 | ((UNOP*)o)->op_first = newSVOP(OP_CONST, 0, SvREFCNT_inc(*PL_stack_sp--)); |
79072805 | 1897 | op_free(curop); |
79072805 LW |
1898 | linklist(o); |
1899 | return list(o); | |
1900 | } | |
1901 | ||
1902 | OP * | |
8ac85365 | 1903 | convert(I32 type, I32 flags, OP *o) |
79072805 LW |
1904 | { |
1905 | OP *kid; | |
a0d0e21e | 1906 | OP *last = 0; |
79072805 | 1907 | |
11343788 MB |
1908 | if (!o || o->op_type != OP_LIST) |
1909 | o = newLISTOP(OP_LIST, 0, o, Nullop); | |
748a9306 | 1910 | else |
5dc0d613 | 1911 | o->op_flags &= ~OPf_WANT; |
79072805 | 1912 | |
22c35a8c | 1913 | if (!(PL_opargs[type] & OA_MARK)) |
11343788 | 1914 | null(cLISTOPo->op_first); |
8990e307 | 1915 | |
11343788 | 1916 | o->op_type = type; |
22c35a8c | 1917 | o->op_ppaddr = PL_ppaddr[type]; |
11343788 | 1918 | o->op_flags |= flags; |
79072805 | 1919 | |
11343788 MB |
1920 | o = CHECKOP(type, o); |
1921 | if (o->op_type != type) | |
1922 | return o; | |
79072805 | 1923 | |
11343788 | 1924 | if (cLISTOPo->op_children < 7) { |
79072805 | 1925 | /* XXX do we really need to do this if we're done appending?? */ |
11343788 | 1926 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 | 1927 | last = kid; |
11343788 | 1928 | cLISTOPo->op_last = last; /* in case check substituted last arg */ |
79072805 LW |
1929 | } |
1930 | ||
11343788 | 1931 | return fold_constants(o); |
79072805 LW |
1932 | } |
1933 | ||
1934 | /* List constructors */ | |
1935 | ||
1936 | OP * | |
8ac85365 | 1937 | append_elem(I32 type, OP *first, OP *last) |
79072805 LW |
1938 | { |
1939 | if (!first) | |
1940 | return last; | |
8990e307 LW |
1941 | |
1942 | if (!last) | |
79072805 | 1943 | return first; |
8990e307 | 1944 | |
a0d0e21e LW |
1945 | if (first->op_type != type || type==OP_LIST && first->op_flags & OPf_PARENS) |
1946 | return newLISTOP(type, 0, first, last); | |
79072805 | 1947 | |
a0d0e21e LW |
1948 | if (first->op_flags & OPf_KIDS) |
1949 | ((LISTOP*)first)->op_last->op_sibling = last; | |
1950 | else { | |
1951 | first->op_flags |= OPf_KIDS; | |
1952 | ((LISTOP*)first)->op_first = last; | |
1953 | } | |
1954 | ((LISTOP*)first)->op_last = last; | |
1955 | ((LISTOP*)first)->op_children++; | |
1956 | return first; | |
79072805 LW |
1957 | } |
1958 | ||
1959 | OP * | |
8ac85365 | 1960 | append_list(I32 type, LISTOP *first, LISTOP *last) |
79072805 LW |
1961 | { |
1962 | if (!first) | |
1963 | return (OP*)last; | |
8990e307 LW |
1964 | |
1965 | if (!last) | |
79072805 | 1966 | return (OP*)first; |
8990e307 LW |
1967 | |
1968 | if (first->op_type != type) | |
79072805 | 1969 | return prepend_elem(type, (OP*)first, (OP*)last); |
8990e307 LW |
1970 | |
1971 | if (last->op_type != type) | |
79072805 LW |
1972 | return append_elem(type, (OP*)first, (OP*)last); |
1973 | ||
1974 | first->op_last->op_sibling = last->op_first; | |
1975 | first->op_last = last->op_last; | |
1976 | first->op_children += last->op_children; | |
1977 | if (first->op_children) | |
acb74605 | 1978 | first->op_flags |= OPf_KIDS; |
79072805 LW |
1979 | |
1980 | Safefree(last); | |
1981 | return (OP*)first; | |
1982 | } | |
1983 | ||
1984 | OP * | |
8ac85365 | 1985 | prepend_elem(I32 type, OP *first, OP *last) |
79072805 LW |
1986 | { |
1987 | if (!first) | |
1988 | return last; | |
8990e307 LW |
1989 | |
1990 | if (!last) | |
79072805 | 1991 | return first; |
8990e307 LW |
1992 | |
1993 | if (last->op_type == type) { | |
1994 | if (type == OP_LIST) { /* already a PUSHMARK there */ | |
1995 | first->op_sibling = ((LISTOP*)last)->op_first->op_sibling; | |
1996 | ((LISTOP*)last)->op_first->op_sibling = first; | |
1997 | } | |
1998 | else { | |
1999 | if (!(last->op_flags & OPf_KIDS)) { | |
2000 | ((LISTOP*)last)->op_last = first; | |
2001 | last->op_flags |= OPf_KIDS; | |
2002 | } | |
2003 | first->op_sibling = ((LISTOP*)last)->op_first; | |
2004 | ((LISTOP*)last)->op_first = first; | |
79072805 | 2005 | } |
79072805 LW |
2006 | ((LISTOP*)last)->op_children++; |
2007 | return last; | |
2008 | } | |
2009 | ||
2010 | return newLISTOP(type, 0, first, last); | |
2011 | } | |
2012 | ||
2013 | /* Constructors */ | |
2014 | ||
2015 | OP * | |
8ac85365 | 2016 | newNULLLIST(void) |
79072805 | 2017 | { |
8990e307 LW |
2018 | return newOP(OP_STUB, 0); |
2019 | } | |
2020 | ||
2021 | OP * | |
8ac85365 | 2022 | force_list(OP *o) |
8990e307 | 2023 | { |
11343788 MB |
2024 | if (!o || o->op_type != OP_LIST) |
2025 | o = newLISTOP(OP_LIST, 0, o, Nullop); | |
2026 | null(o); | |
2027 | return o; | |
79072805 LW |
2028 | } |
2029 | ||
2030 | OP * | |
8ac85365 | 2031 | newLISTOP(I32 type, I32 flags, OP *first, OP *last) |
79072805 LW |
2032 | { |
2033 | LISTOP *listop; | |
2034 | ||
2035 | Newz(1101, listop, 1, LISTOP); | |
2036 | ||
2037 | listop->op_type = type; | |
22c35a8c | 2038 | listop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2039 | listop->op_children = (first != 0) + (last != 0); |
2040 | listop->op_flags = flags; | |
79072805 LW |
2041 | |
2042 | if (!last && first) | |
2043 | last = first; | |
2044 | else if (!first && last) | |
2045 | first = last; | |
8990e307 LW |
2046 | else if (first) |
2047 | first->op_sibling = last; | |
79072805 LW |
2048 | listop->op_first = first; |
2049 | listop->op_last = last; | |
8990e307 LW |
2050 | if (type == OP_LIST) { |
2051 | OP* pushop; | |
2052 | pushop = newOP(OP_PUSHMARK, 0); | |
2053 | pushop->op_sibling = first; | |
2054 | listop->op_first = pushop; | |
2055 | listop->op_flags |= OPf_KIDS; | |
2056 | if (!last) | |
2057 | listop->op_last = pushop; | |
2058 | } | |
2059 | else if (listop->op_children) | |
2060 | listop->op_flags |= OPf_KIDS; | |
79072805 LW |
2061 | |
2062 | return (OP*)listop; | |
2063 | } | |
2064 | ||
2065 | OP * | |
8ac85365 | 2066 | newOP(I32 type, I32 flags) |
79072805 | 2067 | { |
11343788 MB |
2068 | OP *o; |
2069 | Newz(1101, o, 1, OP); | |
2070 | o->op_type = type; | |
22c35a8c | 2071 | o->op_ppaddr = PL_ppaddr[type]; |
11343788 | 2072 | o->op_flags = flags; |
79072805 | 2073 | |
11343788 MB |
2074 | o->op_next = o; |
2075 | o->op_private = 0 + (flags >> 8); | |
22c35a8c | 2076 | if (PL_opargs[type] & OA_RETSCALAR) |
11343788 | 2077 | scalar(o); |
22c35a8c | 2078 | if (PL_opargs[type] & OA_TARGET) |
11343788 MB |
2079 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
2080 | return CHECKOP(type, o); | |
79072805 LW |
2081 | } |
2082 | ||
2083 | OP * | |
8ac85365 | 2084 | newUNOP(I32 type, I32 flags, OP *first) |
79072805 LW |
2085 | { |
2086 | UNOP *unop; | |
2087 | ||
93a17b20 | 2088 | if (!first) |
aeea060c | 2089 | first = newOP(OP_STUB, 0); |
22c35a8c | 2090 | if (PL_opargs[type] & OA_MARK) |
8990e307 | 2091 | first = force_list(first); |
93a17b20 | 2092 | |
79072805 LW |
2093 | Newz(1101, unop, 1, UNOP); |
2094 | unop->op_type = type; | |
22c35a8c | 2095 | unop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2096 | unop->op_first = first; |
2097 | unop->op_flags = flags | OPf_KIDS; | |
c07a80fd | 2098 | unop->op_private = 1 | (flags >> 8); |
e50aee73 | 2099 | unop = (UNOP*) CHECKOP(type, unop); |
79072805 LW |
2100 | if (unop->op_next) |
2101 | return (OP*)unop; | |
2102 | ||
a0d0e21e | 2103 | return fold_constants((OP *) unop); |
79072805 LW |
2104 | } |
2105 | ||
2106 | OP * | |
8ac85365 | 2107 | newBINOP(I32 type, I32 flags, OP *first, OP *last) |
79072805 LW |
2108 | { |
2109 | BINOP *binop; | |
2110 | Newz(1101, binop, 1, BINOP); | |
2111 | ||
2112 | if (!first) | |
2113 | first = newOP(OP_NULL, 0); | |
2114 | ||
2115 | binop->op_type = type; | |
22c35a8c | 2116 | binop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2117 | binop->op_first = first; |
2118 | binop->op_flags = flags | OPf_KIDS; | |
2119 | if (!last) { | |
2120 | last = first; | |
c07a80fd | 2121 | binop->op_private = 1 | (flags >> 8); |
79072805 LW |
2122 | } |
2123 | else { | |
c07a80fd | 2124 | binop->op_private = 2 | (flags >> 8); |
79072805 LW |
2125 | first->op_sibling = last; |
2126 | } | |
2127 | ||
e50aee73 | 2128 | binop = (BINOP*)CHECKOP(type, binop); |
79072805 LW |
2129 | if (binop->op_next) |
2130 | return (OP*)binop; | |
2131 | ||
7284ab6f | 2132 | binop->op_last = binop->op_first->op_sibling; |
79072805 | 2133 | |
a0d0e21e | 2134 | return fold_constants((OP *)binop); |
79072805 LW |
2135 | } |
2136 | ||
a0ed51b3 LW |
2137 | static int |
2138 | utf8compare(const void *a, const void *b) | |
2139 | { | |
2140 | int i; | |
2141 | for (i = 0; i < 10; i++) { | |
2142 | if ((*(U8**)a)[i] < (*(U8**)b)[i]) | |
2143 | return -1; | |
2144 | if ((*(U8**)a)[i] > (*(U8**)b)[i]) | |
2145 | return 1; | |
2146 | } | |
2147 | return 0; | |
2148 | } | |
2149 | ||
79072805 | 2150 | OP * |
8ac85365 | 2151 | pmtrans(OP *o, OP *expr, OP *repl) |
79072805 | 2152 | { |
79072805 LW |
2153 | SV *tstr = ((SVOP*)expr)->op_sv; |
2154 | SV *rstr = ((SVOP*)repl)->op_sv; | |
463ee0b2 LW |
2155 | STRLEN tlen; |
2156 | STRLEN rlen; | |
ec49126f | 2157 | register U8 *t = (U8*)SvPV(tstr, tlen); |
2158 | register U8 *r = (U8*)SvPV(rstr, rlen); | |
79072805 LW |
2159 | register I32 i; |
2160 | register I32 j; | |
a0ed51b3 | 2161 | I32 del; |
79072805 | 2162 | I32 complement; |
5d06d08e | 2163 | I32 squash; |
79072805 LW |
2164 | register short *tbl; |
2165 | ||
11343788 | 2166 | complement = o->op_private & OPpTRANS_COMPLEMENT; |
a0ed51b3 | 2167 | del = o->op_private & OPpTRANS_DELETE; |
5d06d08e | 2168 | squash = o->op_private & OPpTRANS_SQUASH; |
79072805 | 2169 | |
a0ed51b3 LW |
2170 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { |
2171 | SV* listsv = newSVpv("# comment\n",0); | |
2172 | SV* transv = 0; | |
2173 | U8* tend = t + tlen; | |
2174 | U8* rend = r + rlen; | |
2175 | I32 ulen; | |
2176 | U32 tfirst = 1; | |
2177 | U32 tlast = 0; | |
2178 | I32 tdiff; | |
2179 | U32 rfirst = 1; | |
2180 | U32 rlast = 0; | |
2181 | I32 rdiff; | |
2182 | I32 diff; | |
2183 | I32 none = 0; | |
2184 | U32 max = 0; | |
2185 | I32 bits; | |
2186 | I32 grows = 0; | |
2187 | I32 havefinal = 0; | |
2188 | U32 final; | |
2189 | HV *hv; | |
2190 | I32 from_utf = o->op_private & OPpTRANS_FROM_UTF; | |
2191 | I32 to_utf = o->op_private & OPpTRANS_TO_UTF; | |
2192 | ||
2193 | if (complement) { | |
2194 | U8 tmpbuf[10]; | |
2195 | U8** cp; | |
2196 | UV nextmin = 0; | |
2197 | New(1109, cp, tlen, U8*); | |
2198 | i = 0; | |
2199 | transv = newSVpv("",0); | |
2200 | while (t < tend) { | |
2201 | cp[i++] = t; | |
2202 | t += UTF8SKIP(t); | |
2203 | if (*t == 0xff) { | |
2204 | t++; | |
2205 | t += UTF8SKIP(t); | |
2206 | } | |
2207 | } | |
2208 | qsort(cp, i, sizeof(U8*), utf8compare); | |
2209 | for (j = 0; j < i; j++) { | |
2210 | U8 *s = cp[j]; | |
2211 | UV val = utf8_to_uv(s, &ulen); | |
2212 | s += ulen; | |
2213 | diff = val - nextmin; | |
2214 | if (diff > 0) { | |
2215 | t = uv_to_utf8(tmpbuf,nextmin); | |
dfe13c55 | 2216 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 LW |
2217 | if (diff > 1) { |
2218 | t = uv_to_utf8(tmpbuf, val - 1); | |
2219 | sv_catpvn(transv, "\377", 1); | |
dfe13c55 | 2220 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 LW |
2221 | } |
2222 | } | |
2223 | if (*s == 0xff) | |
2224 | val = utf8_to_uv(s+1, &ulen); | |
2225 | if (val >= nextmin) | |
2226 | nextmin = val + 1; | |
2227 | } | |
2228 | t = uv_to_utf8(tmpbuf,nextmin); | |
dfe13c55 | 2229 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 LW |
2230 | t = uv_to_utf8(tmpbuf, 0x7fffffff); |
2231 | sv_catpvn(transv, "\377", 1); | |
dfe13c55 GS |
2232 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
2233 | t = (U8*)SvPVX(transv); | |
a0ed51b3 LW |
2234 | tlen = SvCUR(transv); |
2235 | tend = t + tlen; | |
2236 | } | |
2237 | else if (!rlen && !del) { | |
2238 | r = t; rlen = tlen; rend = tend; | |
4757a243 LW |
2239 | } |
2240 | if (!squash) { | |
2241 | if (to_utf && from_utf) { /* only counting characters */ | |
2242 | if (t == r || (tlen == rlen && memEQ(t, r, tlen))) | |
2243 | o->op_private |= OPpTRANS_IDENTICAL; | |
2244 | } | |
2245 | else { /* straight latin-1 translation */ | |
2246 | if (tlen == 4 && memEQ(t, "\0\377\303\277", 4) && | |
2247 | rlen == 4 && memEQ(r, "\0\377\303\277", 4)) | |
2248 | o->op_private |= OPpTRANS_IDENTICAL; | |
2249 | } | |
a0ed51b3 LW |
2250 | } |
2251 | ||
2252 | while (t < tend || tfirst <= tlast) { | |
2253 | /* see if we need more "t" chars */ | |
2254 | if (tfirst > tlast) { | |
2255 | tfirst = (I32)utf8_to_uv(t, &ulen); | |
2256 | t += ulen; | |
2257 | if (t < tend && *t == 0xff) { /* illegal utf8 val indicates range */ | |
2258 | tlast = (I32)utf8_to_uv(++t, &ulen); | |
2259 | t += ulen; | |
2260 | } | |
2261 | else | |
2262 | tlast = tfirst; | |
2263 | } | |
2264 | ||
2265 | /* now see if we need more "r" chars */ | |
2266 | if (rfirst > rlast) { | |
2267 | if (r < rend) { | |
2268 | rfirst = (I32)utf8_to_uv(r, &ulen); | |
2269 | r += ulen; | |
2270 | if (r < rend && *r == 0xff) { /* illegal utf8 val indicates range */ | |
2271 | rlast = (I32)utf8_to_uv(++r, &ulen); | |
2272 | r += ulen; | |
2273 | } | |
2274 | else | |
2275 | rlast = rfirst; | |
2276 | } | |
2277 | else { | |
2278 | if (!havefinal++) | |
2279 | final = rlast; | |
2280 | rfirst = rlast = 0xffffffff; | |
2281 | } | |
2282 | } | |
2283 | ||
2284 | /* now see which range will peter our first, if either. */ | |
2285 | tdiff = tlast - tfirst; | |
2286 | rdiff = rlast - rfirst; | |
2287 | ||
2288 | if (tdiff <= rdiff) | |
2289 | diff = tdiff; | |
2290 | else | |
2291 | diff = rdiff; | |
2292 | ||
2293 | if (rfirst == 0xffffffff) { | |
2294 | diff = tdiff; /* oops, pretend rdiff is infinite */ | |
2295 | if (diff > 0) | |
2296 | sv_catpvf(listsv, "%04x\t%04x\tXXXX\n", tfirst, tlast); | |
2297 | else | |
2298 | sv_catpvf(listsv, "%04x\t\tXXXX\n", tfirst); | |
2299 | } | |
2300 | else { | |
2301 | if (diff > 0) | |
2302 | sv_catpvf(listsv, "%04x\t%04x\t%04x\n", tfirst, tfirst + diff, rfirst); | |
2303 | else | |
2304 | sv_catpvf(listsv, "%04x\t\t%04x\n", tfirst, rfirst); | |
2305 | ||
2306 | if (rfirst + diff > max) | |
2307 | max = rfirst + diff; | |
2308 | rfirst += diff + 1; | |
2309 | if (!grows) { | |
2310 | if (rfirst <= 0x80) | |
2311 | ; | |
2312 | else if (rfirst <= 0x800) | |
2313 | grows |= (tfirst < 0x80); | |
2314 | else if (rfirst <= 0x10000) | |
2315 | grows |= (tfirst < 0x800); | |
2316 | else if (rfirst <= 0x200000) | |
2317 | grows |= (tfirst < 0x10000); | |
2318 | else if (rfirst <= 0x4000000) | |
2319 | grows |= (tfirst < 0x200000); | |
2320 | else if (rfirst <= 0x80000000) | |
2321 | grows |= (tfirst < 0x4000000); | |
2322 | } | |
2323 | } | |
2324 | tfirst += diff + 1; | |
2325 | } | |
2326 | ||
2327 | none = ++max; | |
2328 | if (del) | |
2329 | del = ++max; | |
2330 | ||
2331 | if (max > 0xffff) | |
2332 | bits = 32; | |
2333 | else if (max > 0xff) | |
2334 | bits = 16; | |
2335 | else | |
2336 | bits = 8; | |
2337 | ||
2338 | cSVOPo->op_sv = (SV*)swash_init("utf8", "", listsv, bits, none); | |
2339 | SvREFCNT_dec(listsv); | |
2340 | if (transv) | |
2341 | SvREFCNT_dec(transv); | |
2342 | ||
2343 | if (!del && havefinal) | |
2344 | (void)hv_store((HV*)SvRV((cSVOPo->op_sv)), "FINAL", 5, newSViv((IV)final), 0); | |
2345 | ||
2346 | if (grows && to_utf) | |
2347 | o->op_private |= OPpTRANS_GROWS; | |
2348 | ||
2349 | op_free(expr); | |
2350 | op_free(repl); | |
2351 | return o; | |
2352 | } | |
2353 | ||
2354 | tbl = (short*)cPVOPo->op_pv; | |
79072805 LW |
2355 | if (complement) { |
2356 | Zero(tbl, 256, short); | |
2357 | for (i = 0; i < tlen; i++) | |
ec49126f | 2358 | tbl[t[i]] = -1; |
79072805 LW |
2359 | for (i = 0, j = 0; i < 256; i++) { |
2360 | if (!tbl[i]) { | |
2361 | if (j >= rlen) { | |
a0ed51b3 | 2362 | if (del) |
79072805 LW |
2363 | tbl[i] = -2; |
2364 | else if (rlen) | |
ec49126f | 2365 | tbl[i] = r[j-1]; |
79072805 LW |
2366 | else |
2367 | tbl[i] = i; | |
2368 | } | |
2369 | else | |
ec49126f | 2370 | tbl[i] = r[j++]; |
79072805 LW |
2371 | } |
2372 | } | |
2373 | } | |
2374 | else { | |
a0ed51b3 | 2375 | if (!rlen && !del) { |
79072805 | 2376 | r = t; rlen = tlen; |
5d06d08e | 2377 | if (!squash) |
4757a243 | 2378 | o->op_private |= OPpTRANS_IDENTICAL; |
79072805 LW |
2379 | } |
2380 | for (i = 0; i < 256; i++) | |
2381 | tbl[i] = -1; | |
2382 | for (i = 0, j = 0; i < tlen; i++,j++) { | |
2383 | if (j >= rlen) { | |
a0ed51b3 | 2384 | if (del) { |
ec49126f | 2385 | if (tbl[t[i]] == -1) |
2386 | tbl[t[i]] = -2; | |
79072805 LW |
2387 | continue; |
2388 | } | |
2389 | --j; | |
2390 | } | |
ec49126f | 2391 | if (tbl[t[i]] == -1) |
2392 | tbl[t[i]] = r[j]; | |
79072805 LW |
2393 | } |
2394 | } | |
2395 | op_free(expr); | |
2396 | op_free(repl); | |
2397 | ||
11343788 | 2398 | return o; |
79072805 LW |
2399 | } |
2400 | ||
2401 | OP * | |
8ac85365 | 2402 | newPMOP(I32 type, I32 flags) |
79072805 | 2403 | { |
11343788 | 2404 | dTHR; |
79072805 LW |
2405 | PMOP *pmop; |
2406 | ||
2407 | Newz(1101, pmop, 1, PMOP); | |
2408 | pmop->op_type = type; | |
22c35a8c | 2409 | pmop->op_ppaddr = PL_ppaddr[type]; |
79072805 | 2410 | pmop->op_flags = flags; |
c07a80fd | 2411 | pmop->op_private = 0 | (flags >> 8); |
79072805 | 2412 | |
3280af22 | 2413 | if (PL_hints & HINT_RE_TAINT) |
b3eb6a9b | 2414 | pmop->op_pmpermflags |= PMf_RETAINT; |
3280af22 | 2415 | if (PL_hints & HINT_LOCALE) |
b3eb6a9b GS |
2416 | pmop->op_pmpermflags |= PMf_LOCALE; |
2417 | pmop->op_pmflags = pmop->op_pmpermflags; | |
36477c24 | 2418 | |
79072805 | 2419 | /* link into pm list */ |
3280af22 NIS |
2420 | if (type != OP_TRANS && PL_curstash) { |
2421 | pmop->op_pmnext = HvPMROOT(PL_curstash); | |
2422 | HvPMROOT(PL_curstash) = pmop; | |
79072805 LW |
2423 | } |
2424 | ||
2425 | return (OP*)pmop; | |
2426 | } | |
2427 | ||
2428 | OP * | |
8ac85365 | 2429 | pmruntime(OP *o, OP *expr, OP *repl) |
79072805 | 2430 | { |
5c0ca799 | 2431 | dTHR; |
79072805 LW |
2432 | PMOP *pm; |
2433 | LOGOP *rcop; | |
ce862d02 | 2434 | I32 repl_has_vars = 0; |
79072805 | 2435 | |
11343788 MB |
2436 | if (o->op_type == OP_TRANS) |
2437 | return pmtrans(o, expr, repl); | |
79072805 | 2438 | |
3280af22 | 2439 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 2440 | pm = (PMOP*)o; |
79072805 LW |
2441 | |
2442 | if (expr->op_type == OP_CONST) { | |
463ee0b2 | 2443 | STRLEN plen; |
79072805 | 2444 | SV *pat = ((SVOP*)expr)->op_sv; |
463ee0b2 | 2445 | char *p = SvPV(pat, plen); |
11343788 | 2446 | if ((o->op_flags & OPf_SPECIAL) && strEQ(p, " ")) { |
93a17b20 | 2447 | sv_setpvn(pat, "\\s+", 3); |
463ee0b2 | 2448 | p = SvPV(pat, plen); |
79072805 LW |
2449 | pm->op_pmflags |= PMf_SKIPWHITE; |
2450 | } | |
15e52e56 | 2451 | pm->op_pmregexp = CALLREGCOMP(p, p + plen, pm); |
aeea060c | 2452 | if (strEQ("\\s+", pm->op_pmregexp->precomp)) |
85e6fe83 | 2453 | pm->op_pmflags |= PMf_WHITE; |
79072805 LW |
2454 | op_free(expr); |
2455 | } | |
2456 | else { | |
3280af22 NIS |
2457 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) |
2458 | expr = newUNOP((!(PL_hints & HINT_RE_EVAL) | |
2cd61cdb IZ |
2459 | ? OP_REGCRESET |
2460 | : OP_REGCMAYBE),0,expr); | |
463ee0b2 | 2461 | |
79072805 LW |
2462 | Newz(1101, rcop, 1, LOGOP); |
2463 | rcop->op_type = OP_REGCOMP; | |
22c35a8c | 2464 | rcop->op_ppaddr = PL_ppaddr[OP_REGCOMP]; |
79072805 | 2465 | rcop->op_first = scalar(expr); |
3280af22 | 2466 | rcop->op_flags |= ((PL_hints & HINT_RE_EVAL) |
2cd61cdb IZ |
2467 | ? (OPf_SPECIAL | OPf_KIDS) |
2468 | : OPf_KIDS); | |
79072805 | 2469 | rcop->op_private = 1; |
11343788 | 2470 | rcop->op_other = o; |
79072805 LW |
2471 | |
2472 | /* establish postfix order */ | |
3280af22 | 2473 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) { |
463ee0b2 LW |
2474 | LINKLIST(expr); |
2475 | rcop->op_next = expr; | |
2476 | ((UNOP*)expr)->op_first->op_next = (OP*)rcop; | |
2477 | } | |
2478 | else { | |
2479 | rcop->op_next = LINKLIST(expr); | |
2480 | expr->op_next = (OP*)rcop; | |
2481 | } | |
79072805 | 2482 | |
11343788 | 2483 | prepend_elem(o->op_type, scalar((OP*)rcop), o); |
79072805 LW |
2484 | } |
2485 | ||
2486 | if (repl) { | |
748a9306 LW |
2487 | OP *curop; |
2488 | if (pm->op_pmflags & PMf_EVAL) | |
2489 | curop = 0; | |
554b3eca | 2490 | #ifdef USE_THREADS |
2faa37cc | 2491 | else if (repl->op_type == OP_THREADSV |
554b3eca | 2492 | && strchr("&`'123456789+", |
533c011a | 2493 | PL_threadsv_names[repl->op_targ])) |
554b3eca MB |
2494 | { |
2495 | curop = 0; | |
2496 | } | |
2497 | #endif /* USE_THREADS */ | |
748a9306 LW |
2498 | else if (repl->op_type == OP_CONST) |
2499 | curop = repl; | |
79072805 | 2500 | else { |
79072805 LW |
2501 | OP *lastop = 0; |
2502 | for (curop = LINKLIST(repl); curop!=repl; curop = LINKLIST(curop)) { | |
22c35a8c | 2503 | if (PL_opargs[curop->op_type] & OA_DANGEROUS) { |
554b3eca | 2504 | #ifdef USE_THREADS |
ce862d02 IZ |
2505 | if (curop->op_type == OP_THREADSV) { |
2506 | repl_has_vars = 1; | |
be949f6f | 2507 | if (strchr("&`'123456789+", curop->op_private)) |
ce862d02 | 2508 | break; |
554b3eca MB |
2509 | } |
2510 | #else | |
79072805 LW |
2511 | if (curop->op_type == OP_GV) { |
2512 | GV *gv = ((GVOP*)curop)->op_gv; | |
ce862d02 | 2513 | repl_has_vars = 1; |
93a17b20 | 2514 | if (strchr("&`'123456789+", *GvENAME(gv))) |
79072805 LW |
2515 | break; |
2516 | } | |
554b3eca | 2517 | #endif /* USE_THREADS */ |
79072805 LW |
2518 | else if (curop->op_type == OP_RV2CV) |
2519 | break; | |
2520 | else if (curop->op_type == OP_RV2SV || | |
2521 | curop->op_type == OP_RV2AV || | |
2522 | curop->op_type == OP_RV2HV || | |
2523 | curop->op_type == OP_RV2GV) { | |
2524 | if (lastop && lastop->op_type != OP_GV) /*funny deref?*/ | |
2525 | break; | |
2526 | } | |
748a9306 LW |
2527 | else if (curop->op_type == OP_PADSV || |
2528 | curop->op_type == OP_PADAV || | |
2529 | curop->op_type == OP_PADHV || | |
554b3eca | 2530 | curop->op_type == OP_PADANY) { |
ce862d02 | 2531 | repl_has_vars = 1; |
748a9306 | 2532 | } |
1167e5da SM |
2533 | else if (curop->op_type == OP_PUSHRE) |
2534 | ; /* Okay here, dangerous in newASSIGNOP */ | |
79072805 LW |
2535 | else |
2536 | break; | |
2537 | } | |
2538 | lastop = curop; | |
2539 | } | |
748a9306 | 2540 | } |
ce862d02 IZ |
2541 | if (curop == repl |
2542 | && !(repl_has_vars | |
2543 | && (!pm->op_pmregexp | |
2544 | || pm->op_pmregexp->reganch & ROPT_EVAL_SEEN))) { | |
748a9306 | 2545 | pm->op_pmflags |= PMf_CONST; /* const for long enough */ |
4633a7c4 | 2546 | pm->op_pmpermflags |= PMf_CONST; /* const for long enough */ |
11343788 | 2547 | prepend_elem(o->op_type, scalar(repl), o); |
748a9306 LW |
2548 | } |
2549 | else { | |
ce862d02 IZ |
2550 | if (curop == repl && !pm->op_pmregexp) { /* Has variables. */ |
2551 | pm->op_pmflags |= PMf_MAYBE_CONST; | |
2552 | pm->op_pmpermflags |= PMf_MAYBE_CONST; | |
2553 | } | |
748a9306 LW |
2554 | Newz(1101, rcop, 1, LOGOP); |
2555 | rcop->op_type = OP_SUBSTCONT; | |
22c35a8c | 2556 | rcop->op_ppaddr = PL_ppaddr[OP_SUBSTCONT]; |
748a9306 LW |
2557 | rcop->op_first = scalar(repl); |
2558 | rcop->op_flags |= OPf_KIDS; | |
2559 | rcop->op_private = 1; | |
11343788 | 2560 | rcop->op_other = o; |
748a9306 LW |
2561 | |
2562 | /* establish postfix order */ | |
2563 | rcop->op_next = LINKLIST(repl); | |
2564 | repl->op_next = (OP*)rcop; | |
2565 | ||
2566 | pm->op_pmreplroot = scalar((OP*)rcop); | |
2567 | pm->op_pmreplstart = LINKLIST(rcop); | |
2568 | rcop->op_next = 0; | |
79072805 LW |
2569 | } |
2570 | } | |
2571 | ||
2572 | return (OP*)pm; | |
2573 | } | |
2574 | ||
2575 | OP * | |
8ac85365 | 2576 | newSVOP(I32 type, I32 flags, SV *sv) |
79072805 LW |
2577 | { |
2578 | SVOP *svop; | |
2579 | Newz(1101, svop, 1, SVOP); | |
2580 | svop->op_type = type; | |
22c35a8c | 2581 | svop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2582 | svop->op_sv = sv; |
2583 | svop->op_next = (OP*)svop; | |
2584 | svop->op_flags = flags; | |
22c35a8c | 2585 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 2586 | scalar((OP*)svop); |
22c35a8c | 2587 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 2588 | svop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2589 | return CHECKOP(type, svop); |
79072805 LW |
2590 | } |
2591 | ||
2592 | OP * | |
8ac85365 | 2593 | newGVOP(I32 type, I32 flags, GV *gv) |
79072805 | 2594 | { |
11343788 | 2595 | dTHR; |
79072805 LW |
2596 | GVOP *gvop; |
2597 | Newz(1101, gvop, 1, GVOP); | |
2598 | gvop->op_type = type; | |
22c35a8c | 2599 | gvop->op_ppaddr = PL_ppaddr[type]; |
8990e307 | 2600 | gvop->op_gv = (GV*)SvREFCNT_inc(gv); |
79072805 LW |
2601 | gvop->op_next = (OP*)gvop; |
2602 | gvop->op_flags = flags; | |
22c35a8c | 2603 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 2604 | scalar((OP*)gvop); |
22c35a8c | 2605 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 2606 | gvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2607 | return CHECKOP(type, gvop); |
79072805 LW |
2608 | } |
2609 | ||
2610 | OP * | |
8ac85365 | 2611 | newPVOP(I32 type, I32 flags, char *pv) |
79072805 LW |
2612 | { |
2613 | PVOP *pvop; | |
2614 | Newz(1101, pvop, 1, PVOP); | |
2615 | pvop->op_type = type; | |
22c35a8c | 2616 | pvop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2617 | pvop->op_pv = pv; |
2618 | pvop->op_next = (OP*)pvop; | |
2619 | pvop->op_flags = flags; | |
22c35a8c | 2620 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 2621 | scalar((OP*)pvop); |
22c35a8c | 2622 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 2623 | pvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2624 | return CHECKOP(type, pvop); |
79072805 LW |
2625 | } |
2626 | ||
79072805 | 2627 | void |
8ac85365 | 2628 | package(OP *o) |
79072805 | 2629 | { |
11343788 | 2630 | dTHR; |
93a17b20 | 2631 | SV *sv; |
79072805 | 2632 | |
3280af22 NIS |
2633 | save_hptr(&PL_curstash); |
2634 | save_item(PL_curstname); | |
11343788 | 2635 | if (o) { |
463ee0b2 LW |
2636 | STRLEN len; |
2637 | char *name; | |
11343788 | 2638 | sv = cSVOPo->op_sv; |
463ee0b2 | 2639 | name = SvPV(sv, len); |
3280af22 NIS |
2640 | PL_curstash = gv_stashpvn(name,len,TRUE); |
2641 | sv_setpvn(PL_curstname, name, len); | |
11343788 | 2642 | op_free(o); |
93a17b20 LW |
2643 | } |
2644 | else { | |
3280af22 NIS |
2645 | sv_setpv(PL_curstname,"<none>"); |
2646 | PL_curstash = Nullhv; | |
93a17b20 | 2647 | } |
7ad382f4 | 2648 | PL_hints |= HINT_BLOCK_SCOPE; |
3280af22 NIS |
2649 | PL_copline = NOLINE; |
2650 | PL_expect = XSTATE; | |
79072805 LW |
2651 | } |
2652 | ||
85e6fe83 | 2653 | void |
8ac85365 | 2654 | utilize(int aver, I32 floor, OP *version, OP *id, OP *arg) |
85e6fe83 | 2655 | { |
a0d0e21e LW |
2656 | OP *pack; |
2657 | OP *meth; | |
2658 | OP *rqop; | |
2659 | OP *imop; | |
b1cb66bf | 2660 | OP *veop; |
78ca652e | 2661 | GV *gv; |
85e6fe83 | 2662 | |
a0d0e21e LW |
2663 | if (id->op_type != OP_CONST) |
2664 | croak("Module name must be constant"); | |
85e6fe83 | 2665 | |
b1cb66bf | 2666 | veop = Nullop; |
2667 | ||
2668 | if(version != Nullop) { | |
2669 | SV *vesv = ((SVOP*)version)->op_sv; | |
2670 | ||
2671 | if (arg == Nullop && !SvNIOK(vesv)) { | |
2672 | arg = version; | |
2673 | } | |
2674 | else { | |
2675 | OP *pack; | |
2676 | OP *meth; | |
2677 | ||
2678 | if (version->op_type != OP_CONST || !SvNIOK(vesv)) | |
2679 | croak("Version number must be constant number"); | |
2680 | ||
2681 | /* Make copy of id so we don't free it twice */ | |
2682 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); | |
2683 | ||
2684 | /* Fake up a method call to VERSION */ | |
2685 | meth = newSVOP(OP_CONST, 0, newSVpv("VERSION", 7)); | |
2686 | veop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, | |
2687 | append_elem(OP_LIST, | |
2688 | prepend_elem(OP_LIST, pack, list(version)), | |
2689 | newUNOP(OP_METHOD, 0, meth))); | |
2690 | } | |
2691 | } | |
aeea060c | 2692 | |
a0d0e21e | 2693 | /* Fake up an import/unimport */ |
4633a7c4 LW |
2694 | if (arg && arg->op_type == OP_STUB) |
2695 | imop = arg; /* no import on explicit () */ | |
b1cb66bf | 2696 | else if(SvNIOK(((SVOP*)id)->op_sv)) { |
2697 | imop = Nullop; /* use 5.0; */ | |
2698 | } | |
4633a7c4 LW |
2699 | else { |
2700 | /* Make copy of id so we don't free it twice */ | |
2701 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); | |
4633a7c4 LW |
2702 | meth = newSVOP(OP_CONST, 0, |
2703 | aver | |
2704 | ? newSVpv("import", 6) | |
2705 | : newSVpv("unimport", 8) | |
2706 | ); | |
2707 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, | |
a0d0e21e LW |
2708 | append_elem(OP_LIST, |
2709 | prepend_elem(OP_LIST, pack, list(arg)), | |
2710 | newUNOP(OP_METHOD, 0, meth))); | |
4633a7c4 LW |
2711 | } |
2712 | ||
78ca652e GS |
2713 | /* Fake up a require, handle override, if any */ |
2714 | gv = gv_fetchpv("require", FALSE, SVt_PVCV); | |
2715 | if (!(gv && GvIMPORTED_CV(gv))) | |
2716 | gv = gv_fetchpv("CORE::GLOBAL::require", FALSE, SVt_PVCV); | |
2717 | ||
2718 | if (gv && GvIMPORTED_CV(gv)) { | |
2719 | rqop = ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, | |
2720 | append_elem(OP_LIST, id, | |
2721 | scalar(newUNOP(OP_RV2CV, 0, | |
2722 | newGVOP(OP_GV, 0, | |
2723 | gv)))))); | |
2724 | } | |
2725 | else { | |
2726 | rqop = newUNOP(OP_REQUIRE, 0, id); | |
2727 | } | |
a0d0e21e LW |
2728 | |
2729 | /* Fake up the BEGIN {}, which does its thing immediately. */ | |
c07a80fd | 2730 | newSUB(floor, |
a0d0e21e | 2731 | newSVOP(OP_CONST, 0, newSVpv("BEGIN", 5)), |
4633a7c4 | 2732 | Nullop, |
a0d0e21e | 2733 | append_elem(OP_LINESEQ, |
b1cb66bf | 2734 | append_elem(OP_LINESEQ, |
2735 | newSTATEOP(0, Nullch, rqop), | |
2736 | newSTATEOP(0, Nullch, veop)), | |
a0d0e21e | 2737 | newSTATEOP(0, Nullch, imop) )); |
85e6fe83 | 2738 | |
3280af22 NIS |
2739 | PL_copline = NOLINE; |
2740 | PL_expect = XSTATE; | |
85e6fe83 LW |
2741 | } |
2742 | ||
79072805 | 2743 | OP * |
78ca652e GS |
2744 | dofile(OP *term) |
2745 | { | |
2746 | OP *doop; | |
2747 | GV *gv; | |
2748 | ||
2749 | gv = gv_fetchpv("do", FALSE, SVt_PVCV); | |
2750 | if (!(gv && GvIMPORTED_CV(gv))) | |
2751 | gv = gv_fetchpv("CORE::GLOBAL::do", FALSE, SVt_PVCV); | |
2752 | ||
2753 | if (gv && GvIMPORTED_CV(gv)) { | |
2754 | doop = ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, | |
2755 | append_elem(OP_LIST, term, | |
2756 | scalar(newUNOP(OP_RV2CV, 0, | |
2757 | newGVOP(OP_GV, 0, | |
2758 | gv)))))); | |
2759 | } | |
2760 | else { | |
2761 | doop = newUNOP(OP_DOFILE, 0, scalar(term)); | |
2762 | } | |
2763 | return doop; | |
2764 | } | |
2765 | ||
2766 | OP * | |
8ac85365 | 2767 | newSLICEOP(I32 flags, OP *subscript, OP *listval) |
79072805 LW |
2768 | { |
2769 | return newBINOP(OP_LSLICE, flags, | |
8990e307 LW |
2770 | list(force_list(subscript)), |
2771 | list(force_list(listval)) ); | |
79072805 LW |
2772 | } |
2773 | ||
76e3520e | 2774 | STATIC I32 |
8ac85365 | 2775 | list_assignment(register OP *o) |
79072805 | 2776 | { |
11343788 | 2777 | if (!o) |
79072805 LW |
2778 | return TRUE; |
2779 | ||
11343788 MB |
2780 | if (o->op_type == OP_NULL && o->op_flags & OPf_KIDS) |
2781 | o = cUNOPo->op_first; | |
79072805 | 2782 | |
11343788 MB |
2783 | if (o->op_type == OP_COND_EXPR) { |
2784 | I32 t = list_assignment(cCONDOPo->op_first->op_sibling); | |
2785 | I32 f = list_assignment(cCONDOPo->op_first->op_sibling->op_sibling); | |
79072805 LW |
2786 | |
2787 | if (t && f) | |
2788 | return TRUE; | |
2789 | if (t || f) | |
2790 | yyerror("Assignment to both a list and a scalar"); | |
2791 | return FALSE; | |
2792 | } | |
2793 | ||
11343788 MB |
2794 | if (o->op_type == OP_LIST || o->op_flags & OPf_PARENS || |
2795 | o->op_type == OP_RV2AV || o->op_type == OP_RV2HV || | |
2796 | o->op_type == OP_ASLICE || o->op_type == OP_HSLICE) | |
79072805 LW |
2797 | return TRUE; |
2798 | ||
11343788 | 2799 | if (o->op_type == OP_PADAV || o->op_type == OP_PADHV) |
93a17b20 LW |
2800 | return TRUE; |
2801 | ||
11343788 | 2802 | if (o->op_type == OP_RV2SV) |
79072805 LW |
2803 | return FALSE; |
2804 | ||
2805 | return FALSE; | |
2806 | } | |
2807 | ||
2808 | OP * | |
8ac85365 | 2809 | newASSIGNOP(I32 flags, OP *left, I32 optype, OP *right) |
79072805 | 2810 | { |
11343788 | 2811 | OP *o; |
79072805 | 2812 | |
a0d0e21e LW |
2813 | if (optype) { |
2814 | if (optype == OP_ANDASSIGN || optype == OP_ORASSIGN) { | |
2815 | return newLOGOP(optype, 0, | |
2816 | mod(scalar(left), optype), | |
2817 | newUNOP(OP_SASSIGN, 0, scalar(right))); | |
2818 | } | |
2819 | else { | |
2820 | return newBINOP(optype, OPf_STACKED, | |
2821 | mod(scalar(left), optype), scalar(right)); | |
2822 | } | |
2823 | } | |
2824 | ||
79072805 | 2825 | if (list_assignment(left)) { |
6ee623d5 | 2826 | dTHR; |
3280af22 NIS |
2827 | PL_modcount = 0; |
2828 | PL_eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ | |
463ee0b2 | 2829 | left = mod(left, OP_AASSIGN); |
3280af22 NIS |
2830 | if (PL_eval_start) |
2831 | PL_eval_start = 0; | |
748a9306 | 2832 | else { |
a0d0e21e LW |
2833 | op_free(left); |
2834 | op_free(right); | |
2835 | return Nullop; | |
2836 | } | |
11343788 | 2837 | o = newBINOP(OP_AASSIGN, flags, |
8990e307 LW |
2838 | list(force_list(right)), |
2839 | list(force_list(left)) ); | |
11343788 | 2840 | o->op_private = 0 | (flags >> 8); |
a0d0e21e | 2841 | if (!(left->op_private & OPpLVAL_INTRO)) { |
79072805 | 2842 | OP *curop; |
11343788 | 2843 | OP *lastop = o; |
3280af22 | 2844 | PL_generation++; |
11343788 | 2845 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
22c35a8c | 2846 | if (PL_opargs[curop->op_type] & OA_DANGEROUS) { |
79072805 LW |
2847 | if (curop->op_type == OP_GV) { |
2848 | GV *gv = ((GVOP*)curop)->op_gv; | |
3280af22 | 2849 | if (gv == PL_defgv || SvCUR(gv) == PL_generation) |
79072805 | 2850 | break; |
3280af22 | 2851 | SvCUR(gv) = PL_generation; |
79072805 | 2852 | } |
748a9306 LW |
2853 | else if (curop->op_type == OP_PADSV || |
2854 | curop->op_type == OP_PADAV || | |
2855 | curop->op_type == OP_PADHV || | |
2856 | curop->op_type == OP_PADANY) { | |
3280af22 | 2857 | SV **svp = AvARRAY(PL_comppad_name); |
8e07c86e | 2858 | SV *sv = svp[curop->op_targ]; |
3280af22 | 2859 | if (SvCUR(sv) == PL_generation) |
748a9306 | 2860 | break; |
3280af22 | 2861 | SvCUR(sv) = PL_generation; /* (SvCUR not used any more) */ |
748a9306 | 2862 | } |
79072805 LW |
2863 | else if (curop->op_type == OP_RV2CV) |
2864 | break; | |
2865 | else if (curop->op_type == OP_RV2SV || | |
2866 | curop->op_type == OP_RV2AV || | |
2867 | curop->op_type == OP_RV2HV || | |
2868 | curop->op_type == OP_RV2GV) { | |
2869 | if (lastop->op_type != OP_GV) /* funny deref? */ | |
2870 | break; | |
2871 | } | |
1167e5da SM |
2872 | else if (curop->op_type == OP_PUSHRE) { |
2873 | if (((PMOP*)curop)->op_pmreplroot) { | |
2874 | GV *gv = (GV*)((PMOP*)curop)->op_pmreplroot; | |
3280af22 | 2875 | if (gv == PL_defgv || SvCUR(gv) == PL_generation) |
1167e5da | 2876 | break; |
3280af22 | 2877 | SvCUR(gv) = PL_generation; |
1167e5da SM |
2878 | } |
2879 | } | |
79072805 LW |
2880 | else |
2881 | break; | |
2882 | } | |
2883 | lastop = curop; | |
2884 | } | |
11343788 MB |
2885 | if (curop != o) |
2886 | o->op_private = OPpASSIGN_COMMON; | |
79072805 | 2887 | } |
c07a80fd | 2888 | if (right && right->op_type == OP_SPLIT) { |
2889 | OP* tmpop; | |
2890 | if ((tmpop = ((LISTOP*)right)->op_first) && | |
2891 | tmpop->op_type == OP_PUSHRE) | |
2892 | { | |
2893 | PMOP *pm = (PMOP*)tmpop; | |
2894 | if (left->op_type == OP_RV2AV && | |
2895 | !(left->op_private & OPpLVAL_INTRO) && | |
11343788 | 2896 | !(o->op_private & OPpASSIGN_COMMON) ) |
c07a80fd | 2897 | { |
2898 | tmpop = ((UNOP*)left)->op_first; | |
2899 | if (tmpop->op_type == OP_GV && !pm->op_pmreplroot) { | |
2900 | pm->op_pmreplroot = (OP*)((GVOP*)tmpop)->op_gv; | |
2901 | pm->op_pmflags |= PMf_ONCE; | |
11343788 | 2902 | tmpop = cUNOPo->op_first; /* to list (nulled) */ |
c07a80fd | 2903 | tmpop = ((UNOP*)tmpop)->op_first; /* to pushmark */ |
2904 | tmpop->op_sibling = Nullop; /* don't free split */ | |
2905 | right->op_next = tmpop->op_next; /* fix starting loc */ | |
11343788 | 2906 | op_free(o); /* blow off assign */ |
54310121 | 2907 | right->op_flags &= ~OPf_WANT; |
a5f75d66 | 2908 | /* "I don't know and I don't care." */ |
c07a80fd | 2909 | return right; |
2910 | } | |
2911 | } | |
2912 | else { | |
3280af22 | 2913 | if (PL_modcount < 10000 && |
c07a80fd | 2914 | ((LISTOP*)right)->op_last->op_type == OP_CONST) |
2915 | { | |
2916 | SV *sv = ((SVOP*)((LISTOP*)right)->op_last)->op_sv; | |
2917 | if (SvIVX(sv) == 0) | |
3280af22 | 2918 | sv_setiv(sv, PL_modcount+1); |
c07a80fd | 2919 | } |
2920 | } | |
2921 | } | |
2922 | } | |
11343788 | 2923 | return o; |
79072805 LW |
2924 | } |
2925 | if (!right) | |
2926 | right = newOP(OP_UNDEF, 0); | |
2927 | if (right->op_type == OP_READLINE) { | |
2928 | right->op_flags |= OPf_STACKED; | |
463ee0b2 | 2929 | return newBINOP(OP_NULL, flags, mod(scalar(left), OP_SASSIGN), scalar(right)); |
79072805 | 2930 | } |
a0d0e21e | 2931 | else { |
3280af22 | 2932 | PL_eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ |
11343788 | 2933 | o = newBINOP(OP_SASSIGN, flags, |
463ee0b2 | 2934 | scalar(right), mod(scalar(left), OP_SASSIGN) ); |
3280af22 NIS |
2935 | if (PL_eval_start) |
2936 | PL_eval_start = 0; | |
748a9306 | 2937 | else { |
11343788 | 2938 | op_free(o); |
a0d0e21e LW |
2939 | return Nullop; |
2940 | } | |
2941 | } | |
11343788 | 2942 | return o; |
79072805 LW |
2943 | } |
2944 | ||
2945 | OP * | |
8ac85365 | 2946 | newSTATEOP(I32 flags, char *label, OP *o) |
79072805 | 2947 | { |
11343788 | 2948 | dTHR; |
bbce6d69 | 2949 | U32 seq = intro_my(); |
79072805 LW |
2950 | register COP *cop; |
2951 | ||
2952 | Newz(1101, cop, 1, COP); | |
3280af22 | 2953 | if (PERLDB_LINE && PL_curcop->cop_line && PL_curstash != PL_debstash) { |
8990e307 | 2954 | cop->op_type = OP_DBSTATE; |
22c35a8c | 2955 | cop->op_ppaddr = PL_ppaddr[ OP_DBSTATE ]; |
8990e307 LW |
2956 | } |
2957 | else { | |
2958 | cop->op_type = OP_NEXTSTATE; | |
22c35a8c | 2959 | cop->op_ppaddr = PL_ppaddr[ OP_NEXTSTATE ]; |
8990e307 | 2960 | } |
79072805 | 2961 | cop->op_flags = flags; |
a0ed51b3 | 2962 | cop->op_private = (PL_hints & HINT_UTF8); |
ff0cee69 | 2963 | #ifdef NATIVE_HINTS |
2964 | cop->op_private |= NATIVE_HINTS; | |
2965 | #endif | |
e24b16f9 | 2966 | PL_compiling.op_private = cop->op_private; |
79072805 LW |
2967 | cop->op_next = (OP*)cop; |
2968 | ||
463ee0b2 LW |
2969 | if (label) { |
2970 | cop->cop_label = label; | |
3280af22 | 2971 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 2972 | } |
bbce6d69 | 2973 | cop->cop_seq = seq; |
3280af22 | 2974 | cop->cop_arybase = PL_curcop->cop_arybase; |
599cee73 PM |
2975 | if (PL_curcop->cop_warnings == WARN_NONE |
2976 | || PL_curcop->cop_warnings == WARN_ALL) | |
2977 | cop->cop_warnings = PL_curcop->cop_warnings ; | |
2978 | else | |
2979 | cop->cop_warnings = newSVsv(PL_curcop->cop_warnings) ; | |
2980 | ||
79072805 | 2981 | |
3280af22 NIS |
2982 | if (PL_copline == NOLINE) |
2983 | cop->cop_line = PL_curcop->cop_line; | |
79072805 | 2984 | else { |
3280af22 NIS |
2985 | cop->cop_line = PL_copline; |
2986 | PL_copline = NOLINE; | |
79072805 | 2987 | } |
3280af22 NIS |
2988 | cop->cop_filegv = (GV*)SvREFCNT_inc(PL_curcop->cop_filegv); |
2989 | cop->cop_stash = PL_curstash; | |
79072805 | 2990 | |
3280af22 NIS |
2991 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
2992 | SV **svp = av_fetch(GvAV(PL_curcop->cop_filegv),(I32)cop->cop_line, FALSE); | |
2993 | if (svp && *svp != &PL_sv_undef && !SvIOK(*svp)) { | |
a0d0e21e | 2994 | (void)SvIOK_on(*svp); |
a5f75d66 | 2995 | SvIVX(*svp) = 1; |
93a17b20 LW |
2996 | SvSTASH(*svp) = (HV*)cop; |
2997 | } | |
2998 | } | |
2999 | ||
11343788 | 3000 | return prepend_elem(OP_LINESEQ, (OP*)cop, o); |
79072805 LW |
3001 | } |
3002 | ||
bbce6d69 | 3003 | /* "Introduce" my variables to visible status. */ |
3004 | U32 | |
8ac85365 | 3005 | intro_my(void) |
bbce6d69 | 3006 | { |
3007 | SV **svp; | |
3008 | SV *sv; | |
3009 | I32 i; | |
3010 | ||
3280af22 NIS |
3011 | if (! PL_min_intro_pending) |
3012 | return PL_cop_seqmax; | |
bbce6d69 | 3013 | |
3280af22 NIS |
3014 | svp = AvARRAY(PL_comppad_name); |
3015 | for (i = PL_min_intro_pending; i <= PL_max_intro_pending; i++) { | |
3016 | if ((sv = svp[i]) && sv != &PL_sv_undef && !SvIVX(sv)) { | |
c53d7c7d | 3017 | SvIVX(sv) = PAD_MAX; /* Don't know scope end yet. */ |
3280af22 | 3018 | SvNVX(sv) = (double)PL_cop_seqmax; |
bbce6d69 | 3019 | } |
3020 | } | |
3280af22 NIS |
3021 | PL_min_intro_pending = 0; |
3022 | PL_comppad_name_fill = PL_max_intro_pending; /* Needn't search higher */ | |
3023 | return PL_cop_seqmax++; | |
bbce6d69 | 3024 | } |
3025 | ||
79072805 | 3026 | OP * |
8ac85365 | 3027 | newLOGOP(I32 type, I32 flags, OP *first, OP *other) |
79072805 | 3028 | { |
883ffac3 CS |
3029 | return new_logop(type, flags, &first, &other); |
3030 | } | |
3031 | ||
3bd495df | 3032 | STATIC OP * |
883ffac3 CS |
3033 | new_logop(I32 type, I32 flags, OP** firstp, OP** otherp) |
3034 | { | |
11343788 | 3035 | dTHR; |
79072805 | 3036 | LOGOP *logop; |
11343788 | 3037 | OP *o; |
883ffac3 CS |
3038 | OP *first = *firstp; |
3039 | OP *other = *otherp; | |
79072805 | 3040 | |
a0d0e21e LW |
3041 | if (type == OP_XOR) /* Not short circuit, but here by precedence. */ |
3042 | return newBINOP(type, flags, scalar(first), scalar(other)); | |
3043 | ||
8990e307 | 3044 | scalarboolean(first); |
79072805 LW |
3045 | /* optimize "!a && b" to "a || b", and "!a || b" to "a && b" */ |
3046 | if (first->op_type == OP_NOT && (first->op_flags & OPf_SPECIAL)) { | |
3047 | if (type == OP_AND || type == OP_OR) { | |
3048 | if (type == OP_AND) | |
3049 | type = OP_OR; | |
3050 | else | |
3051 | type = OP_AND; | |
11343788 | 3052 | o = first; |
883ffac3 | 3053 | first = *firstp = cUNOPo->op_first; |
11343788 MB |
3054 | if (o->op_next) |
3055 | first->op_next = o->op_next; | |
3056 | cUNOPo->op_first = Nullop; | |
3057 | op_free(o); | |
79072805 LW |
3058 | } |
3059 | } | |
3060 | if (first->op_type == OP_CONST) { | |
599cee73 PM |
3061 | if (ckWARN(WARN_PRECEDENCE) && (first->op_private & OPpCONST_BARE)) |
3062 | warner(WARN_PRECEDENCE, "Probable precedence problem on %s", | |
22c35a8c | 3063 | PL_op_desc[type]); |
79072805 LW |
3064 | if ((type == OP_AND) == (SvTRUE(((SVOP*)first)->op_sv))) { |
3065 | op_free(first); | |
883ffac3 | 3066 | *firstp = Nullop; |
79072805 LW |
3067 | return other; |
3068 | } | |
3069 | else { | |
3070 | op_free(other); | |
883ffac3 | 3071 | *otherp = Nullop; |
79072805 LW |
3072 | return first; |
3073 | } | |
3074 | } | |
3075 | else if (first->op_type == OP_WANTARRAY) { | |
3076 | if (type == OP_AND) | |
3077 | list(other); | |
3078 | else | |
3079 | scalar(other); | |
3080 | } | |
599cee73 | 3081 | else if (ckWARN(WARN_UNSAFE) && (first->op_flags & OPf_KIDS)) { |
a6006777 | 3082 | OP *k1 = ((UNOP*)first)->op_first; |
3083 | OP *k2 = k1->op_sibling; | |
3084 | OPCODE warnop = 0; | |
3085 | switch (first->op_type) | |
3086 | { | |
3087 | case OP_NULL: | |
3088 | if (k2 && k2->op_type == OP_READLINE | |
3089 | && (k2->op_flags & OPf_STACKED) | |
55d729e4 | 3090 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
a6006777 | 3091 | warnop = k2->op_type; |
3092 | break; | |
3093 | ||
3094 | case OP_SASSIGN: | |
68dc0745 | 3095 | if (k1->op_type == OP_READDIR |
3096 | || k1->op_type == OP_GLOB | |
3097 | || k1->op_type == OP_EACH) | |
a6006777 | 3098 | warnop = k1->op_type; |
3099 | break; | |
3100 | } | |
8ebc5c01 | 3101 | if (warnop) { |
3280af22 NIS |
3102 | line_t oldline = PL_curcop->cop_line; |
3103 | PL_curcop->cop_line = PL_copline; | |
599cee73 PM |
3104 | warner(WARN_UNSAFE, |
3105 | "Value of %s%s can be \"0\"; test with defined()", | |
22c35a8c | 3106 | PL_op_desc[warnop], |
68dc0745 | 3107 | ((warnop == OP_READLINE || warnop == OP_GLOB) |
3108 | ? " construct" : "() operator")); | |
3280af22 | 3109 | PL_curcop->cop_line = oldline; |
8ebc5c01 | 3110 | } |
a6006777 | 3111 | } |
79072805 LW |
3112 | |
3113 | if (!other) | |
3114 | return first; | |
3115 | ||
a0d0e21e LW |
3116 | if (type == OP_ANDASSIGN || type == OP_ORASSIGN) |
3117 | other->op_private |= OPpASSIGN_BACKWARDS; /* other is an OP_SASSIGN */ | |
3118 | ||
79072805 LW |
3119 | Newz(1101, logop, 1, LOGOP); |
3120 | ||
3121 | logop->op_type = type; | |
22c35a8c | 3122 | logop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
3123 | logop->op_first = first; |
3124 | logop->op_flags = flags | OPf_KIDS; | |
3125 | logop->op_other = LINKLIST(other); | |
c07a80fd | 3126 | logop->op_private = 1 | (flags >> 8); |
79072805 LW |
3127 | |
3128 | /* establish postfix order */ | |
3129 | logop->op_next = LINKLIST(first); | |
3130 | first->op_next = (OP*)logop; | |
3131 | first->op_sibling = other; | |
3132 | ||
11343788 MB |
3133 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
3134 | other->op_next = o; | |
79072805 | 3135 | |
11343788 | 3136 | return o; |
79072805 LW |
3137 | } |
3138 | ||
3139 | OP * | |
8ac85365 | 3140 | newCONDOP(I32 flags, OP *first, OP *trueop, OP *falseop) |
79072805 | 3141 | { |
11343788 | 3142 | dTHR; |
79072805 | 3143 | CONDOP *condop; |
11343788 | 3144 | OP *o; |
79072805 | 3145 | |
b1cb66bf | 3146 | if (!falseop) |
3147 | return newLOGOP(OP_AND, 0, first, trueop); | |
3148 | if (!trueop) | |
3149 | return newLOGOP(OP_OR, 0, first, falseop); | |
79072805 | 3150 | |
8990e307 | 3151 | scalarboolean(first); |
79072805 LW |
3152 | if (first->op_type == OP_CONST) { |
3153 | if (SvTRUE(((SVOP*)first)->op_sv)) { | |
3154 | op_free(first); | |
b1cb66bf | 3155 | op_free(falseop); |
3156 | return trueop; | |
79072805 LW |
3157 | } |
3158 | else { | |
3159 | op_free(first); | |
b1cb66bf | 3160 | op_free(trueop); |
3161 | return falseop; | |
79072805 LW |
3162 | } |
3163 | } | |
3164 | else if (first->op_type == OP_WANTARRAY) { | |
b1cb66bf | 3165 | list(trueop); |
3166 | scalar(falseop); | |
79072805 LW |
3167 | } |
3168 | Newz(1101, condop, 1, CONDOP); | |
3169 | ||
3170 | condop->op_type = OP_COND_EXPR; | |
22c35a8c | 3171 | condop->op_ppaddr = PL_ppaddr[OP_COND_EXPR]; |
79072805 LW |
3172 | condop->op_first = first; |
3173 | condop->op_flags = flags | OPf_KIDS; | |
b1cb66bf | 3174 | condop->op_true = LINKLIST(trueop); |
3175 | condop->op_false = LINKLIST(falseop); | |
c07a80fd | 3176 | condop->op_private = 1 | (flags >> 8); |
79072805 LW |
3177 | |
3178 | /* establish postfix order */ | |
3179 | condop->op_next = LINKLIST(first); | |
3180 | first->op_next = (OP*)condop; | |
3181 | ||
b1cb66bf | 3182 | first->op_sibling = trueop; |
3183 | trueop->op_sibling = falseop; | |
11343788 | 3184 | o = newUNOP(OP_NULL, 0, (OP*)condop); |
79072805 | 3185 | |
5dc0d613 MB |
3186 | trueop->op_next = o; |
3187 | falseop->op_next = o; | |
79072805 | 3188 | |
11343788 | 3189 | return o; |
79072805 LW |
3190 | } |
3191 | ||
3192 | OP * | |
8ac85365 | 3193 | newRANGE(I32 flags, OP *left, OP *right) |
79072805 | 3194 | { |
b35b2403 | 3195 | dTHR; |
79072805 LW |
3196 | CONDOP *condop; |
3197 | OP *flip; | |
3198 | OP *flop; | |
11343788 | 3199 | OP *o; |
79072805 LW |
3200 | |
3201 | Newz(1101, condop, 1, CONDOP); | |
3202 | ||
3203 | condop->op_type = OP_RANGE; | |
22c35a8c | 3204 | condop->op_ppaddr = PL_ppaddr[OP_RANGE]; |
79072805 LW |
3205 | condop->op_first = left; |
3206 | condop->op_flags = OPf_KIDS; | |
3207 | condop->op_true = LINKLIST(left); | |
3208 | condop->op_false = LINKLIST(right); | |
c07a80fd | 3209 | condop->op_private = 1 | (flags >> 8); |
79072805 LW |
3210 | |
3211 | left->op_sibling = right; | |
3212 | ||
3213 | condop->op_next = (OP*)condop; | |
3214 | flip = newUNOP(OP_FLIP, flags, (OP*)condop); | |
3215 | flop = newUNOP(OP_FLOP, 0, flip); | |
11343788 | 3216 | o = newUNOP(OP_NULL, 0, flop); |
79072805 LW |
3217 | linklist(flop); |
3218 | ||
3219 | left->op_next = flip; | |
3220 | right->op_next = flop; | |
3221 | ||
ed6116ce | 3222 | condop->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 | 3223 | sv_upgrade(PAD_SV(condop->op_targ), SVt_PVNV); |
ed6116ce | 3224 | flip->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 LW |
3225 | sv_upgrade(PAD_SV(flip->op_targ), SVt_PVNV); |
3226 | ||
3227 | flip->op_private = left->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
3228 | flop->op_private = right->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
3229 | ||
11343788 | 3230 | flip->op_next = o; |
79072805 | 3231 | if (!flip->op_private || !flop->op_private) |
11343788 | 3232 | linklist(o); /* blow off optimizer unless constant */ |
79072805 | 3233 | |
11343788 | 3234 | return o; |
79072805 LW |
3235 | } |
3236 | ||
3237 | OP * | |
8ac85365 | 3238 | newLOOPOP(I32 flags, I32 debuggable, OP *expr, OP *block) |
79072805 | 3239 | { |
11343788 | 3240 | dTHR; |
463ee0b2 | 3241 | OP* listop; |
11343788 | 3242 | OP* o; |
463ee0b2 | 3243 | int once = block && block->op_flags & OPf_SPECIAL && |
a0d0e21e | 3244 | (block->op_type == OP_ENTERSUB || block->op_type == OP_NULL); |
93a17b20 | 3245 | |
463ee0b2 LW |
3246 | if (expr) { |
3247 | if (once && expr->op_type == OP_CONST && !SvTRUE(((SVOP*)expr)->op_sv)) | |
3248 | return block; /* do {} while 0 does once */ | |
fb73857a | 3249 | if (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB |
3250 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB)) { | |
774d564b | 3251 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 3252 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 GS |
3253 | } else if (expr->op_flags & OPf_KIDS) { |
3254 | OP *k1 = ((UNOP*)expr)->op_first; | |
3255 | OP *k2 = (k1) ? k1->op_sibling : NULL; | |
3256 | switch (expr->op_type) { | |
3257 | case OP_NULL: | |
3258 | if (k2 && k2->op_type == OP_READLINE | |
3259 | && (k2->op_flags & OPf_STACKED) | |
3260 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) | |
3261 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3262 | break; | |
3263 | ||
3264 | case OP_SASSIGN: | |
3265 | if (k1->op_type == OP_READDIR | |
3266 | || k1->op_type == OP_GLOB | |
3267 | || k1->op_type == OP_EACH) | |
3268 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3269 | break; | |
3270 | } | |
774d564b | 3271 | } |
463ee0b2 | 3272 | } |
93a17b20 | 3273 | |
8990e307 | 3274 | listop = append_elem(OP_LINESEQ, block, newOP(OP_UNSTACK, 0)); |
883ffac3 | 3275 | o = new_logop(OP_AND, 0, &expr, &listop); |
463ee0b2 | 3276 | |
883ffac3 CS |
3277 | if (listop) |
3278 | ((LISTOP*)listop)->op_last->op_next = LINKLIST(o); | |
79072805 | 3279 | |
11343788 MB |
3280 | if (once && o != listop) |
3281 | o->op_next = ((LOGOP*)cUNOPo->op_first)->op_other; | |
79072805 | 3282 | |
11343788 MB |
3283 | if (o == listop) |
3284 | o = newUNOP(OP_NULL, 0, o); /* or do {} while 1 loses outer block */ | |
748a9306 | 3285 | |
11343788 MB |
3286 | o->op_flags |= flags; |
3287 | o = scope(o); | |
3288 | o->op_flags |= OPf_SPECIAL; /* suppress POPBLOCK curpm restoration*/ | |
3289 | return o; | |
79072805 LW |
3290 | } |
3291 | ||
3292 | OP * | |
8ac85365 | 3293 | newWHILEOP(I32 flags, I32 debuggable, LOOP *loop, I32 whileline, OP *expr, OP *block, OP *cont) |
79072805 | 3294 | { |
11343788 | 3295 | dTHR; |
79072805 LW |
3296 | OP *redo; |
3297 | OP *next = 0; | |
3298 | OP *listop; | |
11343788 | 3299 | OP *o; |
79072805 LW |
3300 | OP *condop; |
3301 | ||
fb73857a | 3302 | if (expr && (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB |
3303 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB))) { | |
748a9306 | 3304 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 3305 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 GS |
3306 | } else if (expr && (expr->op_flags & OPf_KIDS)) { |
3307 | OP *k1 = ((UNOP*)expr)->op_first; | |
3308 | OP *k2 = (k1) ? k1->op_sibling : NULL; | |
3309 | switch (expr->op_type) { | |
3310 | case OP_NULL: | |
3311 | if (k2 && k2->op_type == OP_READLINE | |
3312 | && (k2->op_flags & OPf_STACKED) | |
3313 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) | |
3314 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3315 | break; | |
3316 | ||
3317 | case OP_SASSIGN: | |
3318 | if (k1->op_type == OP_READDIR | |
3319 | || k1->op_type == OP_GLOB | |
3320 | || k1->op_type == OP_EACH) | |
3321 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3322 | break; | |
3323 | } | |
748a9306 | 3324 | } |
79072805 LW |
3325 | |
3326 | if (!block) | |
3327 | block = newOP(OP_NULL, 0); | |
3328 | ||
3329 | if (cont) | |
3330 | next = LINKLIST(cont); | |
fb73857a | 3331 | if (expr) { |
79072805 | 3332 | cont = append_elem(OP_LINESEQ, cont, newOP(OP_UNSTACK, 0)); |
fb73857a | 3333 | if ((line_t)whileline != NOLINE) { |
3280af22 | 3334 | PL_copline = whileline; |
fb73857a | 3335 | cont = append_elem(OP_LINESEQ, cont, |
3336 | newSTATEOP(0, Nullch, Nullop)); | |
3337 | } | |
3338 | } | |
79072805 | 3339 | |
463ee0b2 | 3340 | listop = append_list(OP_LINESEQ, (LISTOP*)block, (LISTOP*)cont); |
79072805 LW |
3341 | redo = LINKLIST(listop); |
3342 | ||
3343 | if (expr) { | |
3280af22 | 3344 | PL_copline = whileline; |
883ffac3 CS |
3345 | scalar(listop); |
3346 | o = new_logop(OP_AND, 0, &expr, &listop); | |
11343788 | 3347 | if (o == expr && o->op_type == OP_CONST && !SvTRUE(cSVOPo->op_sv)) { |
85e6fe83 | 3348 | op_free(expr); /* oops, it's a while (0) */ |
463ee0b2 | 3349 | op_free((OP*)loop); |
883ffac3 | 3350 | return Nullop; /* listop already freed by new_logop */ |
463ee0b2 | 3351 | } |
883ffac3 CS |
3352 | if (listop) |
3353 | ((LISTOP*)listop)->op_last->op_next = condop = | |
3354 | (o == listop ? redo : LINKLIST(o)); | |
79072805 LW |
3355 | if (!next) |
3356 | next = condop; | |
3357 | } | |
3358 | else | |
11343788 | 3359 | o = listop; |
79072805 LW |
3360 | |
3361 | if (!loop) { | |
3362 | Newz(1101,loop,1,LOOP); | |
3363 | loop->op_type = OP_ENTERLOOP; | |
22c35a8c | 3364 | loop->op_ppaddr = PL_ppaddr[OP_ENTERLOOP]; |
79072805 LW |
3365 | loop->op_private = 0; |
3366 | loop->op_next = (OP*)loop; | |
3367 | } | |
3368 | ||
11343788 | 3369 | o = newBINOP(OP_LEAVELOOP, 0, (OP*)loop, o); |
79072805 LW |
3370 | |
3371 | loop->op_redoop = redo; | |
11343788 | 3372 | loop->op_lastop = o; |
79072805 LW |
3373 | |
3374 | if (next) | |
3375 | loop->op_nextop = next; | |
3376 | else | |
11343788 | 3377 | loop->op_nextop = o; |
79072805 | 3378 | |
11343788 MB |
3379 | o->op_flags |= flags; |
3380 | o->op_private |= (flags >> 8); | |
3381 | return o; | |
79072805 LW |
3382 | } |
3383 | ||
3384 | OP * | |
8990e307 | 3385 | newFOROP(I32 flags,char *label,line_t forline,OP *sv,OP *expr,OP *block,OP *cont) |
79072805 LW |
3386 | { |
3387 | LOOP *loop; | |
fb73857a | 3388 | OP *wop; |
85e6fe83 | 3389 | int padoff = 0; |
4633a7c4 | 3390 | I32 iterflags = 0; |
79072805 | 3391 | |
79072805 | 3392 | if (sv) { |
85e6fe83 | 3393 | if (sv->op_type == OP_RV2SV) { /* symbol table variable */ |
748a9306 | 3394 | sv->op_type = OP_RV2GV; |
22c35a8c | 3395 | sv->op_ppaddr = PL_ppaddr[OP_RV2GV]; |
79072805 | 3396 | } |
85e6fe83 LW |
3397 | else if (sv->op_type == OP_PADSV) { /* private variable */ |
3398 | padoff = sv->op_targ; | |
3399 | op_free(sv); | |
3400 | sv = Nullop; | |
3401 | } | |
54b9620d MB |
3402 | else if (sv->op_type == OP_THREADSV) { /* per-thread variable */ |
3403 | padoff = sv->op_targ; | |
3404 | iterflags |= OPf_SPECIAL; | |
3405 | op_free(sv); | |
3406 | sv = Nullop; | |
3407 | } | |
79072805 | 3408 | else |
22c35a8c | 3409 | croak("Can't use %s for loop variable", PL_op_desc[sv->op_type]); |
79072805 LW |
3410 | } |
3411 | else { | |
54b9620d MB |
3412 | #ifdef USE_THREADS |
3413 | padoff = find_threadsv("_"); | |
3414 | iterflags |= OPf_SPECIAL; | |
3415 | #else | |
3280af22 | 3416 | sv = newGVOP(OP_GV, 0, PL_defgv); |
54b9620d | 3417 | #endif |
79072805 | 3418 | } |
5f05dabc | 3419 | if (expr->op_type == OP_RV2AV || expr->op_type == OP_PADAV) { |
89ea2908 | 3420 | expr = mod(force_list(scalar(ref(expr, OP_ITER))), OP_GREPSTART); |
4633a7c4 LW |
3421 | iterflags |= OPf_STACKED; |
3422 | } | |
89ea2908 GA |
3423 | else if (expr->op_type == OP_NULL && |
3424 | (expr->op_flags & OPf_KIDS) && | |
3425 | ((BINOP*)expr)->op_first->op_type == OP_FLOP) | |
3426 | { | |
3427 | /* Basically turn for($x..$y) into the same as for($x,$y), but we | |
3428 | * set the STACKED flag to indicate that these values are to be | |
3429 | * treated as min/max values by 'pp_iterinit'. | |
3430 | */ | |
3431 | UNOP* flip = (UNOP*)((UNOP*)((BINOP*)expr)->op_first)->op_first; | |
3432 | CONDOP* range = (CONDOP*) flip->op_first; | |
3433 | OP* left = range->op_first; | |
3434 | OP* right = left->op_sibling; | |
5152d7c7 | 3435 | LISTOP* listop; |
89ea2908 GA |
3436 | |
3437 | range->op_flags &= ~OPf_KIDS; | |
3438 | range->op_first = Nullop; | |
3439 | ||
5152d7c7 GS |
3440 | listop = (LISTOP*)newLISTOP(OP_LIST, 0, left, right); |
3441 | listop->op_first->op_next = range->op_true; | |
89ea2908 | 3442 | left->op_next = range->op_false; |
5152d7c7 GS |
3443 | right->op_next = (OP*)listop; |
3444 | listop->op_next = listop->op_first; | |
89ea2908 GA |
3445 | |
3446 | op_free(expr); | |
5152d7c7 | 3447 | expr = (OP*)(listop); |
89ea2908 GA |
3448 | null(expr); |
3449 | iterflags |= OPf_STACKED; | |
3450 | } | |
3451 | else { | |
3452 | expr = mod(force_list(expr), OP_GREPSTART); | |
3453 | } | |
3454 | ||
3455 | ||
4633a7c4 | 3456 | loop = (LOOP*)list(convert(OP_ENTERITER, iterflags, |
89ea2908 | 3457 | append_elem(OP_LIST, expr, scalar(sv)))); |
85e6fe83 LW |
3458 | assert(!loop->op_next); |
3459 | Renew(loop, 1, LOOP); | |
3460 | loop->op_targ = padoff; | |
fb73857a | 3461 | wop = newWHILEOP(flags, 1, loop, forline, newOP(OP_ITER, 0), block, cont); |
3280af22 | 3462 | PL_copline = forline; |
fb73857a | 3463 | return newSTATEOP(0, label, wop); |
79072805 LW |
3464 | } |
3465 | ||
8990e307 | 3466 | OP* |
8ac85365 | 3467 | newLOOPEX(I32 type, OP *label) |
8990e307 | 3468 | { |
11343788 MB |
3469 | dTHR; |
3470 | OP *o; | |
2d8e6c8d GS |
3471 | STRLEN n_a; |
3472 | ||
8990e307 | 3473 | if (type != OP_GOTO || label->op_type == OP_CONST) { |
cdaebead MB |
3474 | /* "last()" means "last" */ |
3475 | if (label->op_type == OP_STUB && (label->op_flags & OPf_PARENS)) | |
3476 | o = newOP(type, OPf_SPECIAL); | |
3477 | else { | |
3478 | o = newPVOP(type, 0, savepv(label->op_type == OP_CONST | |
2d8e6c8d | 3479 | ? SvPVx(((SVOP*)label)->op_sv, n_a) |
cdaebead MB |
3480 | : "")); |
3481 | } | |
8990e307 LW |
3482 | op_free(label); |
3483 | } | |
3484 | else { | |
a0d0e21e LW |
3485 | if (label->op_type == OP_ENTERSUB) |
3486 | label = newUNOP(OP_REFGEN, 0, mod(label, OP_REFGEN)); | |
11343788 | 3487 | o = newUNOP(type, OPf_STACKED, label); |
8990e307 | 3488 | } |
3280af22 | 3489 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 3490 | return o; |
8990e307 LW |
3491 | } |
3492 | ||
79072805 | 3493 | void |
8ac85365 | 3494 | cv_undef(CV *cv) |
79072805 | 3495 | { |
11343788 MB |
3496 | dTHR; |
3497 | #ifdef USE_THREADS | |
e858de61 MB |
3498 | if (CvMUTEXP(cv)) { |
3499 | MUTEX_DESTROY(CvMUTEXP(cv)); | |
3500 | Safefree(CvMUTEXP(cv)); | |
3501 | CvMUTEXP(cv) = 0; | |
3502 | } | |
11343788 MB |
3503 | #endif /* USE_THREADS */ |
3504 | ||
a0d0e21e | 3505 | if (!CvXSUB(cv) && CvROOT(cv)) { |
11343788 MB |
3506 | #ifdef USE_THREADS |
3507 | if (CvDEPTH(cv) || (CvOWNER(cv) && CvOWNER(cv) != thr)) | |
3508 | croak("Can't undef active subroutine"); | |
3509 | #else | |
a0d0e21e LW |
3510 | if (CvDEPTH(cv)) |
3511 | croak("Can't undef active subroutine"); | |
11343788 | 3512 | #endif /* USE_THREADS */ |
8990e307 | 3513 | ENTER; |
a0d0e21e | 3514 | |
3280af22 NIS |
3515 | SAVESPTR(PL_curpad); |
3516 | PL_curpad = 0; | |
a0d0e21e | 3517 | |
a5f75d66 | 3518 | if (!CvCLONED(cv)) |
748a9306 | 3519 | op_free(CvROOT(cv)); |
79072805 | 3520 | CvROOT(cv) = Nullop; |
8990e307 | 3521 | LEAVE; |
79072805 | 3522 | } |
1d5db326 | 3523 | SvPOK_off((SV*)cv); /* forget prototype */ |
44a8e56a | 3524 | CvFLAGS(cv) = 0; |
8e07c86e AD |
3525 | SvREFCNT_dec(CvGV(cv)); |
3526 | CvGV(cv) = Nullgv; | |
3527 | SvREFCNT_dec(CvOUTSIDE(cv)); | |
3528 | CvOUTSIDE(cv) = Nullcv; | |
3529 | if (CvPADLIST(cv)) { | |
8ebc5c01 | 3530 | /* may be during global destruction */ |
3531 | if (SvREFCNT(CvPADLIST(cv))) { | |
93965878 | 3532 | I32 i = AvFILLp(CvPADLIST(cv)); |
8ebc5c01 | 3533 | while (i >= 0) { |
3534 | SV** svp = av_fetch(CvPADLIST(cv), i--, FALSE); | |
46fc3d4c | 3535 | SV* sv = svp ? *svp : Nullsv; |
3536 | if (!sv) | |
3537 | continue; | |
3280af22 NIS |
3538 | if (sv == (SV*)PL_comppad_name) |
3539 | PL_comppad_name = Nullav; | |
3540 | else if (sv == (SV*)PL_comppad) { | |
3541 | PL_comppad = Nullav; | |
3542 | PL_curpad = Null(SV**); | |
46fc3d4c | 3543 | } |
3544 | SvREFCNT_dec(sv); | |
8ebc5c01 | 3545 | } |
3546 | SvREFCNT_dec((SV*)CvPADLIST(cv)); | |
8e07c86e | 3547 | } |
8e07c86e AD |
3548 | CvPADLIST(cv) = Nullav; |
3549 | } | |
79072805 LW |
3550 | } |
3551 | ||
5f05dabc | 3552 | #ifdef DEBUG_CLOSURES |
76e3520e | 3553 | STATIC void |
5f05dabc | 3554 | cv_dump(cv) |
3555 | CV* cv; | |
3556 | { | |
3557 | CV *outside = CvOUTSIDE(cv); | |
3558 | AV* padlist = CvPADLIST(cv); | |
4fdae800 | 3559 | AV* pad_name; |
3560 | AV* pad; | |
3561 | SV** pname; | |
3562 | SV** ppad; | |
5f05dabc | 3563 | I32 ix; |
3564 | ||
fb73857a | 3565 | PerlIO_printf(Perl_debug_log, "\tCV=0x%lx (%s), OUTSIDE=0x%lx (%s)\n", |
ab50184a CS |
3566 | cv, |
3567 | (CvANON(cv) ? "ANON" | |
6b88bc9c | 3568 | : (cv == PL_main_cv) ? "MAIN" |
33b8ce05 | 3569 | : CvUNIQUE(cv) ? "UNIQUE" |
44a8e56a | 3570 | : CvGV(cv) ? GvNAME(CvGV(cv)) : "UNDEFINED"), |
ab50184a CS |
3571 | outside, |
3572 | (!outside ? "null" | |
3573 | : CvANON(outside) ? "ANON" | |
6b88bc9c | 3574 | : (outside == PL_main_cv) ? "MAIN" |
07055b4c | 3575 | : CvUNIQUE(outside) ? "UNIQUE" |
44a8e56a | 3576 | : CvGV(outside) ? GvNAME(CvGV(outside)) : "UNDEFINED")); |
5f05dabc | 3577 | |
4fdae800 | 3578 | if (!padlist) |
3579 | return; | |
3580 | ||
3581 | pad_name = (AV*)*av_fetch(padlist, 0, FALSE); | |
3582 | pad = (AV*)*av_fetch(padlist, 1, FALSE); | |
3583 | pname = AvARRAY(pad_name); | |
3584 | ppad = AvARRAY(pad); | |
3585 | ||
93965878 | 3586 | for (ix = 1; ix <= AvFILLp(pad_name); ix++) { |
5f05dabc | 3587 | if (SvPOK(pname[ix])) |
fb73857a | 3588 | PerlIO_printf(Perl_debug_log, "\t%4d. 0x%lx (%s\"%s\" %ld-%ld)\n", |
4fdae800 | 3589 | ix, ppad[ix], |
3590 | SvFAKE(pname[ix]) ? "FAKE " : "", | |
3591 | SvPVX(pname[ix]), | |
ab50184a CS |
3592 | (long)I_32(SvNVX(pname[ix])), |
3593 | (long)SvIVX(pname[ix])); | |
5f05dabc | 3594 | } |
3595 | } | |
3596 | #endif /* DEBUG_CLOSURES */ | |
3597 | ||
76e3520e | 3598 | STATIC CV * |
8ac85365 | 3599 | cv_clone2(CV *proto, CV *outside) |
748a9306 | 3600 | { |
11343788 | 3601 | dTHR; |
748a9306 LW |
3602 | AV* av; |
3603 | I32 ix; | |
3604 | AV* protopadlist = CvPADLIST(proto); | |
3605 | AV* protopad_name = (AV*)*av_fetch(protopadlist, 0, FALSE); | |
3606 | AV* protopad = (AV*)*av_fetch(protopadlist, 1, FALSE); | |
5f05dabc | 3607 | SV** pname = AvARRAY(protopad_name); |
3608 | SV** ppad = AvARRAY(protopad); | |
93965878 NIS |
3609 | I32 fname = AvFILLp(protopad_name); |
3610 | I32 fpad = AvFILLp(protopad); | |
748a9306 LW |
3611 | AV* comppadlist; |
3612 | CV* cv; | |
3613 | ||
07055b4c CS |
3614 | assert(!CvUNIQUE(proto)); |
3615 | ||
748a9306 | 3616 | ENTER; |
3280af22 NIS |
3617 | SAVESPTR(PL_curpad); |
3618 | SAVESPTR(PL_comppad); | |
3619 | SAVESPTR(PL_comppad_name); | |
3620 | SAVESPTR(PL_compcv); | |
748a9306 | 3621 | |
3280af22 | 3622 | cv = PL_compcv = (CV*)NEWSV(1104,0); |
fa83b5b6 | 3623 | sv_upgrade((SV *)cv, SvTYPE(proto)); |
a5f75d66 | 3624 | CvCLONED_on(cv); |
5f05dabc | 3625 | if (CvANON(proto)) |
3626 | CvANON_on(cv); | |
748a9306 | 3627 | |
11343788 | 3628 | #ifdef USE_THREADS |
12ca11f6 | 3629 | New(666, CvMUTEXP(cv), 1, perl_mutex); |
11343788 | 3630 | MUTEX_INIT(CvMUTEXP(cv)); |
11343788 MB |
3631 | CvOWNER(cv) = 0; |
3632 | #endif /* USE_THREADS */ | |
748a9306 | 3633 | CvFILEGV(cv) = CvFILEGV(proto); |
44a8e56a | 3634 | CvGV(cv) = (GV*)SvREFCNT_inc(CvGV(proto)); |
748a9306 LW |
3635 | CvSTASH(cv) = CvSTASH(proto); |
3636 | CvROOT(cv) = CvROOT(proto); | |
3637 | CvSTART(cv) = CvSTART(proto); | |
5f05dabc | 3638 | if (outside) |
3639 | CvOUTSIDE(cv) = (CV*)SvREFCNT_inc(outside); | |
748a9306 | 3640 | |
68dc0745 | 3641 | if (SvPOK(proto)) |
3642 | sv_setpvn((SV*)cv, SvPVX(proto), SvCUR(proto)); | |
3643 | ||
3280af22 | 3644 | PL_comppad_name = newAV(); |
46fc3d4c | 3645 | for (ix = fname; ix >= 0; ix--) |
3280af22 | 3646 | av_store(PL_comppad_name, ix, SvREFCNT_inc(pname[ix])); |
748a9306 | 3647 | |
3280af22 | 3648 | PL_comppad = newAV(); |
748a9306 LW |
3649 | |
3650 | comppadlist = newAV(); | |
3651 | AvREAL_off(comppadlist); | |
3280af22 NIS |
3652 | av_store(comppadlist, 0, (SV*)PL_comppad_name); |
3653 | av_store(comppadlist, 1, (SV*)PL_comppad); | |
748a9306 | 3654 | CvPADLIST(cv) = comppadlist; |
3280af22 NIS |
3655 | av_fill(PL_comppad, AvFILLp(protopad)); |
3656 | PL_curpad = AvARRAY(PL_comppad); | |
748a9306 LW |
3657 | |
3658 | av = newAV(); /* will be @_ */ | |
3659 | av_extend(av, 0); | |
3280af22 | 3660 | av_store(PL_comppad, 0, (SV*)av); |
748a9306 LW |
3661 | AvFLAGS(av) = AVf_REIFY; |
3662 | ||
9607fc9c | 3663 | for (ix = fpad; ix > 0; ix--) { |
3664 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; | |
3280af22 | 3665 | if (namesv && namesv != &PL_sv_undef) { |
aa689395 | 3666 | char *name = SvPVX(namesv); /* XXX */ |
3667 | if (SvFLAGS(namesv) & SVf_FAKE) { /* lexical from outside? */ | |
3668 | I32 off = pad_findlex(name, ix, SvIVX(namesv), | |
155fc61f | 3669 | CvOUTSIDE(cv), cxstack_ix, 0); |
5f05dabc | 3670 | if (!off) |
3280af22 | 3671 | PL_curpad[ix] = SvREFCNT_inc(ppad[ix]); |
5f05dabc | 3672 | else if (off != ix) |
748a9306 LW |
3673 | croak("panic: cv_clone: %s", name); |
3674 | } | |
3675 | else { /* our own lexical */ | |
aa689395 | 3676 | SV* sv; |
5f05dabc | 3677 | if (*name == '&') { |
3678 | /* anon code -- we'll come back for it */ | |
3679 | sv = SvREFCNT_inc(ppad[ix]); | |
3680 | } | |
3681 | else if (*name == '@') | |
3682 | sv = (SV*)newAV(); | |
748a9306 | 3683 | else if (*name == '%') |
5f05dabc | 3684 | sv = (SV*)newHV(); |
748a9306 | 3685 | else |
5f05dabc | 3686 | sv = NEWSV(0,0); |
3687 | if (!SvPADBUSY(sv)) | |
3688 | SvPADMY_on(sv); | |
3280af22 | 3689 | PL_curpad[ix] = sv; |
748a9306 LW |
3690 | } |
3691 | } | |
3692 | else { | |
aa689395 | 3693 | SV* sv = NEWSV(0,0); |
748a9306 | 3694 | SvPADTMP_on(sv); |
3280af22 | 3695 | PL_curpad[ix] = sv; |
748a9306 LW |
3696 | } |
3697 | } | |
3698 | ||
5f05dabc | 3699 | /* Now that vars are all in place, clone nested closures. */ |
3700 | ||
9607fc9c | 3701 | for (ix = fpad; ix > 0; ix--) { |
3702 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; | |
aa689395 | 3703 | if (namesv |
3280af22 | 3704 | && namesv != &PL_sv_undef |
aa689395 | 3705 | && !(SvFLAGS(namesv) & SVf_FAKE) |
3706 | && *SvPVX(namesv) == '&' | |
5f05dabc | 3707 | && CvCLONE(ppad[ix])) |
3708 | { | |
3709 | CV *kid = cv_clone2((CV*)ppad[ix], cv); | |
3710 | SvREFCNT_dec(ppad[ix]); | |
3711 | CvCLONE_on(kid); | |
3712 | SvPADMY_on(kid); | |
3280af22 | 3713 | PL_curpad[ix] = (SV*)kid; |
748a9306 LW |
3714 | } |
3715 | } | |
3716 | ||
5f05dabc | 3717 | #ifdef DEBUG_CLOSURES |
ab50184a CS |
3718 | PerlIO_printf(Perl_debug_log, "Cloned inside:\n"); |
3719 | cv_dump(outside); | |
3720 | PerlIO_printf(Perl_debug_log, " from:\n"); | |
5f05dabc | 3721 | cv_dump(proto); |
ab50184a | 3722 | PerlIO_printf(Perl_debug_log, " to:\n"); |
5f05dabc | 3723 | cv_dump(cv); |
3724 | #endif | |
3725 | ||
748a9306 LW |
3726 | LEAVE; |
3727 | return cv; | |
3728 | } | |
3729 | ||
3730 | CV * | |
8ac85365 | 3731 | cv_clone(CV *proto) |
5f05dabc | 3732 | { |
b099ddc0 GS |
3733 | CV *cv; |
3734 | MUTEX_LOCK(&PL_cred_mutex); /* XXX create separate mutex */ | |
3735 | cv = cv_clone2(proto, CvOUTSIDE(proto)); | |
3736 | MUTEX_UNLOCK(&PL_cred_mutex); /* XXX create separate mutex */ | |
3737 | return cv; | |
5f05dabc | 3738 | } |
3739 | ||
3fe9a6f1 | 3740 | void |
8ac85365 | 3741 | cv_ckproto(CV *cv, GV *gv, char *p) |
3fe9a6f1 | 3742 | { |
3743 | if ((!p != !SvPOK(cv)) || (p && strNE(p, SvPVX(cv)))) { | |
46fc3d4c | 3744 | SV* msg = sv_newmortal(); |
3fe9a6f1 | 3745 | SV* name = Nullsv; |
3746 | ||
3747 | if (gv) | |
46fc3d4c | 3748 | gv_efullname3(name = sv_newmortal(), gv, Nullch); |
3749 | sv_setpv(msg, "Prototype mismatch:"); | |
3750 | if (name) | |
fc36a67e | 3751 | sv_catpvf(msg, " sub %_", name); |
3fe9a6f1 | 3752 | if (SvPOK(cv)) |
46fc3d4c | 3753 | sv_catpvf(msg, " (%s)", SvPVX(cv)); |
3754 | sv_catpv(msg, " vs "); | |
3755 | if (p) | |
3756 | sv_catpvf(msg, "(%s)", p); | |
3757 | else | |
3758 | sv_catpv(msg, "none"); | |
fc36a67e | 3759 | warn("%_", msg); |
3fe9a6f1 | 3760 | } |
3761 | } | |
3762 | ||
760ac839 | 3763 | SV * |
8ac85365 | 3764 | cv_const_sv(CV *cv) |
760ac839 | 3765 | { |
54310121 | 3766 | if (!cv || !SvPOK(cv) || SvCUR(cv)) |
3767 | return Nullsv; | |
fe5e78ed GS |
3768 | return op_const_sv(CvSTART(cv), cv); |
3769 | } | |
760ac839 | 3770 | |
fe5e78ed GS |
3771 | SV * |
3772 | op_const_sv(OP *o, CV *cv) | |
3773 | { | |
3774 | SV *sv = Nullsv; | |
3775 | ||
3776 | if(!o) | |
3777 | return Nullsv; | |
3778 | ||
3779 | if(o->op_type == OP_LINESEQ && cLISTOPo->op_first) | |
3780 | o = cLISTOPo->op_first->op_sibling; | |
3781 | ||
3782 | for (; o; o = o->op_next) { | |
54310121 | 3783 | OPCODE type = o->op_type; |
fe5e78ed GS |
3784 | |
3785 | if(sv && o->op_next == o) | |
3786 | return sv; | |
54310121 | 3787 | if (type == OP_NEXTSTATE || type == OP_NULL || type == OP_PUSHMARK) |
3788 | continue; | |
3789 | if (type == OP_LEAVESUB || type == OP_RETURN) | |
3790 | break; | |
3791 | if (sv) | |
3792 | return Nullsv; | |
3793 | if (type == OP_CONST) | |
5dc0d613 | 3794 | sv = cSVOPo->op_sv; |
fe5e78ed | 3795 | else if (type == OP_PADSV && cv) { |
e858de61 MB |
3796 | AV* padav = (AV*)(AvARRAY(CvPADLIST(cv))[1]); |
3797 | sv = padav ? AvARRAY(padav)[o->op_targ] : Nullsv; | |
5aabfad6 | 3798 | if (!sv || (!SvREADONLY(sv) && SvREFCNT(sv) > 1)) |
54310121 | 3799 | return Nullsv; |
760ac839 | 3800 | } |
54310121 | 3801 | else |
3802 | return Nullsv; | |
760ac839 | 3803 | } |
5aabfad6 | 3804 | if (sv) |
3805 | SvREADONLY_on(sv); | |
760ac839 LW |
3806 | return sv; |
3807 | } | |
3808 | ||
748a9306 | 3809 | CV * |
8ac85365 | 3810 | newSUB(I32 floor, OP *o, OP *proto, OP *block) |
79072805 | 3811 | { |
11343788 | 3812 | dTHR; |
2d8e6c8d GS |
3813 | STRLEN n_a; |
3814 | char *name = o ? SvPVx(cSVOPo->op_sv, n_a) : Nullch; | |
55d729e4 GS |
3815 | GV *gv = gv_fetchpv(name ? name : "__ANON__", |
3816 | GV_ADDMULTI | (block ? 0 : GV_NOINIT), SVt_PVCV); | |
2d8e6c8d | 3817 | char *ps = proto ? SvPVx(((SVOP*)proto)->op_sv, n_a) : Nullch; |
a2008d6d | 3818 | register CV *cv=0; |
a0d0e21e | 3819 | I32 ix; |
79072805 | 3820 | |
11343788 | 3821 | if (o) |
5dc0d613 | 3822 | SAVEFREEOP(o); |
3fe9a6f1 | 3823 | if (proto) |
3824 | SAVEFREEOP(proto); | |
3825 | ||
55d729e4 GS |
3826 | if (SvTYPE(gv) != SVt_PVGV) { /* Prototype now, and had |
3827 | maximum a prototype before. */ | |
3828 | if (SvTYPE(gv) > SVt_NULL) { | |
3829 | if (!SvPOK((SV*)gv) && !(SvIOK((SV*)gv) && SvIVX((SV*)gv) == -1)) | |
3830 | warn("Runaway prototype"); | |
3831 | cv_ckproto((CV*)gv, NULL, ps); | |
3832 | } | |
3833 | if (ps) | |
3834 | sv_setpv((SV*)gv, ps); | |
3835 | else | |
3836 | sv_setiv((SV*)gv, -1); | |
3280af22 NIS |
3837 | SvREFCNT_dec(PL_compcv); |
3838 | cv = PL_compcv = NULL; | |
3839 | PL_sub_generation++; | |
55d729e4 GS |
3840 | goto noblock; |
3841 | } | |
3842 | ||
68dc0745 | 3843 | if (!name || GvCVGEN(gv)) |
3844 | cv = Nullcv; | |
3845 | else if (cv = GvCV(gv)) { | |
3fe9a6f1 | 3846 | cv_ckproto(cv, gv, ps); |
68dc0745 | 3847 | /* already defined (or promised)? */ |
3848 | if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
3849 | SV* const_sv; | |
fe5e78ed | 3850 | bool const_changed = TRUE; |
aa689395 | 3851 | if (!block) { |
3852 | /* just a "sub foo;" when &foo is already defined */ | |
3280af22 | 3853 | SAVEFREESV(PL_compcv); |
aa689395 | 3854 | goto done; |
3855 | } | |
7bac28a0 | 3856 | /* ahem, death to those who redefine active sort subs */ |
3280af22 | 3857 | if (PL_curstackinfo->si_type == PERLSI_SORT && PL_sortcop == CvSTART(cv)) |
7bac28a0 | 3858 | croak("Can't redefine active sort subroutine %s", name); |
fe5e78ed GS |
3859 | if(const_sv = cv_const_sv(cv)) |
3860 | const_changed = sv_cmp(const_sv, op_const_sv(block, Nullcv)); | |
599cee73 PM |
3861 | if ((const_sv && const_changed) || ckWARN(WARN_REDEFINE) |
3862 | && !(CvGV(cv) && GvSTASH(CvGV(cv)) | |
2f34f9d4 IZ |
3863 | && HvNAME(GvSTASH(CvGV(cv))) |
3864 | && strEQ(HvNAME(GvSTASH(CvGV(cv))), | |
3865 | "autouse"))) { | |
3280af22 NIS |
3866 | line_t oldline = PL_curcop->cop_line; |
3867 | PL_curcop->cop_line = PL_copline; | |
599cee73 PM |
3868 | warner(WARN_REDEFINE, |
3869 | const_sv ? "Constant subroutine %s redefined" | |
3870 | : "Subroutine %s redefined", name); | |
3280af22 | 3871 | PL_curcop->cop_line = oldline; |
79072805 | 3872 | } |
8990e307 | 3873 | SvREFCNT_dec(cv); |
68dc0745 | 3874 | cv = Nullcv; |
79072805 LW |
3875 | } |
3876 | } | |
a0d0e21e | 3877 | if (cv) { /* must reuse cv if autoloaded */ |
4633a7c4 | 3878 | cv_undef(cv); |
3280af22 NIS |
3879 | CvFLAGS(cv) = CvFLAGS(PL_compcv); |
3880 | CvOUTSIDE(cv) = CvOUTSIDE(PL_compcv); | |
3881 | CvOUTSIDE(PL_compcv) = 0; | |
3882 | CvPADLIST(cv) = CvPADLIST(PL_compcv); | |
3883 | CvPADLIST(PL_compcv) = 0; | |
3884 | if (SvREFCNT(PL_compcv) > 1) /* XXX Make closures transit through stub. */ | |
3885 | CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc((SV*)cv); | |
3886 | SvREFCNT_dec(PL_compcv); | |
a0d0e21e LW |
3887 | } |
3888 | else { | |
3280af22 | 3889 | cv = PL_compcv; |
44a8e56a | 3890 | if (name) { |
3891 | GvCV(gv) = cv; | |
3892 | GvCVGEN(gv) = 0; | |
3280af22 | 3893 | PL_sub_generation++; |
44a8e56a | 3894 | } |
a0d0e21e | 3895 | } |
44a8e56a | 3896 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
3280af22 NIS |
3897 | CvFILEGV(cv) = PL_curcop->cop_filegv; |
3898 | CvSTASH(cv) = PL_curstash; | |
11343788 MB |
3899 | #ifdef USE_THREADS |
3900 | CvOWNER(cv) = 0; | |
1cfa4ec7 | 3901 | if (!CvMUTEXP(cv)) { |
f6aaf501 | 3902 | New(666, CvMUTEXP(cv), 1, perl_mutex); |
1cfa4ec7 GS |
3903 | MUTEX_INIT(CvMUTEXP(cv)); |
3904 | } | |
11343788 | 3905 | #endif /* USE_THREADS */ |
8990e307 | 3906 | |
3fe9a6f1 | 3907 | if (ps) |
3908 | sv_setpv((SV*)cv, ps); | |
4633a7c4 | 3909 | |
3280af22 | 3910 | if (PL_error_count) { |
c07a80fd | 3911 | op_free(block); |
3912 | block = Nullop; | |
68dc0745 | 3913 | if (name) { |
3914 | char *s = strrchr(name, ':'); | |
3915 | s = s ? s+1 : name; | |
6d4c2119 CS |
3916 | if (strEQ(s, "BEGIN")) { |
3917 | char *not_safe = | |
3918 | "BEGIN not safe after errors--compilation aborted"; | |
3280af22 | 3919 | if (PL_in_eval & 4) |
6d4c2119 CS |
3920 | croak(not_safe); |
3921 | else { | |
3922 | /* force display of errors found but not reported */ | |
38a03e6e | 3923 | sv_catpv(ERRSV, not_safe); |
2d8e6c8d | 3924 | croak("%s", SvPVx(ERRSV, n_a)); |
6d4c2119 CS |
3925 | } |
3926 | } | |
68dc0745 | 3927 | } |
c07a80fd | 3928 | } |
a0d0e21e | 3929 | if (!block) { |
55d729e4 | 3930 | noblock: |
3280af22 | 3931 | PL_copline = NOLINE; |
a0d0e21e LW |
3932 | LEAVE_SCOPE(floor); |
3933 | return cv; | |
3934 | } | |
3935 | ||
3280af22 NIS |
3936 | if (AvFILLp(PL_comppad_name) < AvFILLp(PL_comppad)) |
3937 | av_store(PL_comppad_name, AvFILLp(PL_comppad), Nullsv); | |
a0d0e21e | 3938 | |
54310121 | 3939 | if (CvCLONE(cv)) { |
3280af22 NIS |
3940 | SV **namep = AvARRAY(PL_comppad_name); |
3941 | for (ix = AvFILLp(PL_comppad); ix > 0; ix--) { | |
54310121 | 3942 | SV *namesv; |
3943 | ||
3280af22 | 3944 | if (SvIMMORTAL(PL_curpad[ix])) |
54310121 | 3945 | continue; |
3946 | /* | |
3947 | * The only things that a clonable function needs in its | |
3948 | * pad are references to outer lexicals and anonymous subs. | |
3949 | * The rest are created anew during cloning. | |
3950 | */ | |
3951 | if (!((namesv = namep[ix]) != Nullsv && | |
3280af22 | 3952 | namesv != &PL_sv_undef && |
54310121 | 3953 | (SvFAKE(namesv) || |
3954 | *SvPVX(namesv) == '&'))) | |
3955 | { | |
3280af22 NIS |
3956 | SvREFCNT_dec(PL_curpad[ix]); |
3957 | PL_curpad[ix] = Nullsv; | |
54310121 | 3958 | } |
3959 | } | |
a0d0e21e | 3960 | } |
54310121 | 3961 | else { |
3962 | AV *av = newAV(); /* Will be @_ */ | |
3963 | av_extend(av, 0); | |
3280af22 | 3964 | av_store(PL_comppad, 0, (SV*)av); |
54310121 | 3965 | AvFLAGS(av) = AVf_REIFY; |
79072805 | 3966 | |
3280af22 NIS |
3967 | for (ix = AvFILLp(PL_comppad); ix > 0; ix--) { |
3968 | if (SvIMMORTAL(PL_curpad[ix])) | |
54310121 | 3969 | continue; |
3280af22 NIS |
3970 | if (!SvPADMY(PL_curpad[ix])) |
3971 | SvPADTMP_on(PL_curpad[ix]); | |
54310121 | 3972 | } |
3973 | } | |
79072805 | 3974 | |
a0d0e21e | 3975 | CvROOT(cv) = newUNOP(OP_LEAVESUB, 0, scalarseq(block)); |
79072805 LW |
3976 | CvSTART(cv) = LINKLIST(CvROOT(cv)); |
3977 | CvROOT(cv)->op_next = 0; | |
3978 | peep(CvSTART(cv)); | |
93a17b20 | 3979 | |
44a8e56a | 3980 | if (name) { |
3981 | char *s; | |
3982 | ||
3280af22 | 3983 | if (PERLDB_SUBLINE && PL_curstash != PL_debstash) { |
46fc3d4c | 3984 | SV *sv = NEWSV(0,0); |
44a8e56a | 3985 | SV *tmpstr = sv_newmortal(); |
549bb64a | 3986 | GV *db_postponed = gv_fetchpv("DB::postponed", GV_ADDMULTI, SVt_PVHV); |
44a8e56a | 3987 | CV *cv; |
3988 | HV *hv; | |
3989 | ||
51790459 | 3990 | sv_setpvf(sv, "%_:%ld-%ld", |
3280af22 NIS |
3991 | GvSV(PL_curcop->cop_filegv), |
3992 | (long)PL_subline, (long)PL_curcop->cop_line); | |
44a8e56a | 3993 | gv_efullname3(tmpstr, gv, Nullch); |
3280af22 | 3994 | hv_store(GvHV(PL_DBsub), SvPVX(tmpstr), SvCUR(tmpstr), sv, 0); |
44a8e56a | 3995 | hv = GvHVn(db_postponed); |
9607fc9c | 3996 | if (HvFILL(hv) > 0 && hv_exists(hv, SvPVX(tmpstr), SvCUR(tmpstr)) |
3997 | && (cv = GvCV(db_postponed))) { | |
44a8e56a | 3998 | dSP; |
924508f0 | 3999 | PUSHMARK(SP); |
44a8e56a | 4000 | XPUSHs(tmpstr); |
4001 | PUTBACK; | |
4002 | perl_call_sv((SV*)cv, G_DISCARD); | |
4003 | } | |
4004 | } | |
79072805 | 4005 | |
44a8e56a | 4006 | if ((s = strrchr(name,':'))) |
28757baa | 4007 | s++; |
4008 | else | |
4009 | s = name; | |
68dc0745 | 4010 | if (strEQ(s, "BEGIN")) { |
3280af22 | 4011 | I32 oldscope = PL_scopestack_ix; |
28757baa | 4012 | ENTER; |
3280af22 NIS |
4013 | SAVESPTR(PL_compiling.cop_filegv); |
4014 | SAVEI16(PL_compiling.cop_line); | |
4015 | save_svref(&PL_rs); | |
4016 | sv_setsv(PL_rs, PL_nrs); | |
28757baa | 4017 | |
3280af22 NIS |
4018 | if (!PL_beginav) |
4019 | PL_beginav = newAV(); | |
28757baa | 4020 | DEBUG_x( dump_sub(gv) ); |
3280af22 | 4021 | av_push(PL_beginav, (SV *)cv); |
28757baa | 4022 | GvCV(gv) = 0; |
3280af22 | 4023 | call_list(oldscope, PL_beginav); |
a6006777 | 4024 | |
3280af22 | 4025 | PL_curcop = &PL_compiling; |
a0ed51b3 | 4026 | PL_compiling.op_private = PL_hints; |
28757baa | 4027 | LEAVE; |
4028 | } | |
3280af22 NIS |
4029 | else if (strEQ(s, "END") && !PL_error_count) { |
4030 | if (!PL_endav) | |
4031 | PL_endav = newAV(); | |
4032 | av_unshift(PL_endav, 1); | |
4033 | av_store(PL_endav, 0, (SV *)cv); | |
28757baa | 4034 | GvCV(gv) = 0; |
4035 | } | |
3280af22 NIS |
4036 | else if (strEQ(s, "INIT") && !PL_error_count) { |
4037 | if (!PL_initav) | |
4038 | PL_initav = newAV(); | |
4039 | av_push(PL_initav, SvREFCNT_inc(cv)); | |
b7aad4fe | 4040 | GvCV(gv) = 0; |
ae77835f | 4041 | } |
79072805 | 4042 | } |
a6006777 | 4043 | |
aa689395 | 4044 | done: |
3280af22 | 4045 | PL_copline = NOLINE; |
8990e307 | 4046 | LEAVE_SCOPE(floor); |
a0d0e21e | 4047 | return cv; |
79072805 LW |
4048 | } |
4049 | ||
b099ddc0 | 4050 | /* XXX unsafe for threads if eval_owner isn't held */ |
5476c433 JD |
4051 | void |
4052 | newCONSTSUB(HV *stash, char *name, SV *sv) | |
4053 | { | |
4054 | dTHR; | |
3280af22 NIS |
4055 | U32 oldhints = PL_hints; |
4056 | HV *old_cop_stash = PL_curcop->cop_stash; | |
4057 | HV *old_curstash = PL_curstash; | |
4058 | line_t oldline = PL_curcop->cop_line; | |
4059 | PL_curcop->cop_line = PL_copline; | |
5476c433 | 4060 | |
3280af22 | 4061 | PL_hints &= ~HINT_BLOCK_SCOPE; |
5476c433 | 4062 | if(stash) |
3280af22 | 4063 | PL_curstash = PL_curcop->cop_stash = stash; |
5476c433 JD |
4064 | |
4065 | newSUB( | |
be24f278 | 4066 | start_subparse(FALSE, 0), |
5476c433 | 4067 | newSVOP(OP_CONST, 0, newSVpv(name,0)), |
6b88bc9c | 4068 | newSVOP(OP_CONST, 0, &PL_sv_no), /* SvPV(&PL_sv_no) == "" -- GMB */ |
5476c433 JD |
4069 | newSTATEOP(0, Nullch, newSVOP(OP_CONST, 0, sv)) |
4070 | ); | |
4071 | ||
3280af22 NIS |
4072 | PL_hints = oldhints; |
4073 | PL_curcop->cop_stash = old_cop_stash; | |
4074 | PL_curstash = old_curstash; | |
4075 | PL_curcop->cop_line = oldline; | |
5476c433 JD |
4076 | } |
4077 | ||
57d3b86d | 4078 | CV * |
e3b8966e | 4079 | newXS(char *name, void (*subaddr) (CV * _CPERLproto), char *filename) |
a0d0e21e | 4080 | { |
11343788 | 4081 | dTHR; |
44a8e56a | 4082 | GV *gv = gv_fetchpv(name ? name : "__ANON__", GV_ADDMULTI, SVt_PVCV); |
79072805 | 4083 | register CV *cv; |
44a8e56a | 4084 | |
4085 | if (cv = (name ? GvCV(gv) : Nullcv)) { | |
4086 | if (GvCVGEN(gv)) { | |
4087 | /* just a cached method */ | |
4088 | SvREFCNT_dec(cv); | |
4089 | cv = 0; | |
4090 | } | |
4091 | else if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
4092 | /* already defined (or promised) */ | |
599cee73 | 4093 | if (ckWARN(WARN_REDEFINE) && !(CvGV(cv) && GvSTASH(CvGV(cv)) |
2f34f9d4 IZ |
4094 | && HvNAME(GvSTASH(CvGV(cv))) |
4095 | && strEQ(HvNAME(GvSTASH(CvGV(cv))), "autouse"))) { | |
3280af22 | 4096 | line_t oldline = PL_curcop->cop_line; |
51f6edd3 GS |
4097 | if (PL_copline != NOLINE) |
4098 | PL_curcop->cop_line = PL_copline; | |
599cee73 | 4099 | warner(WARN_REDEFINE, "Subroutine %s redefined",name); |
3280af22 | 4100 | PL_curcop->cop_line = oldline; |
a0d0e21e LW |
4101 | } |
4102 | SvREFCNT_dec(cv); | |
4103 | cv = 0; | |
79072805 | 4104 | } |
79072805 | 4105 | } |
44a8e56a | 4106 | |
4107 | if (cv) /* must reuse cv if autoloaded */ | |
4108 | cv_undef(cv); | |
a0d0e21e LW |
4109 | else { |
4110 | cv = (CV*)NEWSV(1105,0); | |
4111 | sv_upgrade((SV *)cv, SVt_PVCV); | |
44a8e56a | 4112 | if (name) { |
4113 | GvCV(gv) = cv; | |
4114 | GvCVGEN(gv) = 0; | |
3280af22 | 4115 | PL_sub_generation++; |
44a8e56a | 4116 | } |
a0d0e21e | 4117 | } |
5196be3e | 4118 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
11343788 | 4119 | #ifdef USE_THREADS |
12ca11f6 | 4120 | New(666, CvMUTEXP(cv), 1, perl_mutex); |
11343788 | 4121 | MUTEX_INIT(CvMUTEXP(cv)); |
11343788 MB |
4122 | CvOWNER(cv) = 0; |
4123 | #endif /* USE_THREADS */ | |
79072805 | 4124 | CvFILEGV(cv) = gv_fetchfile(filename); |
a0d0e21e | 4125 | CvXSUB(cv) = subaddr; |
44a8e56a | 4126 | |
28757baa | 4127 | if (name) { |
4128 | char *s = strrchr(name,':'); | |
4129 | if (s) | |
4130 | s++; | |
4131 | else | |
4132 | s = name; | |
4133 | if (strEQ(s, "BEGIN")) { | |
3280af22 NIS |
4134 | if (!PL_beginav) |
4135 | PL_beginav = newAV(); | |
4136 | av_push(PL_beginav, (SV *)cv); | |
44a8e56a | 4137 | GvCV(gv) = 0; |
28757baa | 4138 | } |
4139 | else if (strEQ(s, "END")) { | |
3280af22 NIS |
4140 | if (!PL_endav) |
4141 | PL_endav = newAV(); | |
4142 | av_unshift(PL_endav, 1); | |
4143 | av_store(PL_endav, 0, (SV *)cv); | |
44a8e56a | 4144 | GvCV(gv) = 0; |
28757baa | 4145 | } |
7d07dbc2 | 4146 | else if (strEQ(s, "INIT")) { |
3280af22 NIS |
4147 | if (!PL_initav) |
4148 | PL_initav = newAV(); | |
4149 | av_push(PL_initav, (SV *)cv); | |
f8f842e4 | 4150 | GvCV(gv) = 0; |
ae77835f | 4151 | } |
28757baa | 4152 | } |
8990e307 | 4153 | else |
a5f75d66 | 4154 | CvANON_on(cv); |
44a8e56a | 4155 | |
a0d0e21e | 4156 | return cv; |
79072805 LW |
4157 | } |
4158 | ||
4159 | void | |
8ac85365 | 4160 | newFORM(I32 floor, OP *o, OP *block) |
79072805 | 4161 | { |
11343788 | 4162 | dTHR; |
79072805 LW |
4163 | register CV *cv; |
4164 | char *name; | |
4165 | GV *gv; | |
a0d0e21e | 4166 | I32 ix; |
2d8e6c8d | 4167 | STRLEN n_a; |
79072805 | 4168 | |
11343788 | 4169 | if (o) |
2d8e6c8d | 4170 | name = SvPVx(cSVOPo->op_sv, n_a); |
79072805 LW |
4171 | else |
4172 | name = "STDOUT"; | |
85e6fe83 | 4173 | gv = gv_fetchpv(name,TRUE, SVt_PVFM); |
a5f75d66 | 4174 | GvMULTI_on(gv); |
79072805 | 4175 | if (cv = GvFORM(gv)) { |
599cee73 | 4176 | if (ckWARN(WARN_REDEFINE)) { |
3280af22 | 4177 | line_t oldline = PL_curcop->cop_line; |
79072805 | 4178 | |
3280af22 | 4179 | PL_curcop->cop_line = PL_copline; |
599cee73 | 4180 | warner(WARN_REDEFINE, "Format %s redefined",name); |
3280af22 | 4181 | PL_curcop->cop_line = oldline; |
79072805 | 4182 | } |
8990e307 | 4183 | SvREFCNT_dec(cv); |
79072805 | 4184 | } |
3280af22 | 4185 | cv = PL_compcv; |
79072805 | 4186 | GvFORM(gv) = cv; |
44a8e56a | 4187 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
3280af22 | 4188 | CvFILEGV(cv) = PL_curcop->cop_filegv; |
79072805 | 4189 | |
3280af22 NIS |
4190 | for (ix = AvFILLp(PL_comppad); ix > 0; ix--) { |
4191 | if (!SvPADMY(PL_curpad[ix]) && !SvIMMORTAL(PL_curpad[ix])) | |
4192 | SvPADTMP_on(PL_curpad[ix]); | |
a0d0e21e LW |
4193 | } |
4194 | ||
79072805 LW |
4195 | CvROOT(cv) = newUNOP(OP_LEAVEWRITE, 0, scalarseq(block)); |
4196 | CvSTART(cv) = LINKLIST(CvROOT(cv)); | |
4197 | CvROOT(cv)->op_next = 0; | |
4198 | peep(CvSTART(cv)); | |
11343788 | 4199 | op_free(o); |
3280af22 | 4200 | PL_copline = NOLINE; |
8990e307 | 4201 | LEAVE_SCOPE(floor); |
79072805 LW |
4202 | } |
4203 | ||
4204 | OP * | |
8ac85365 | 4205 | newANONLIST(OP *o) |
79072805 | 4206 | { |
93a17b20 | 4207 | return newUNOP(OP_REFGEN, 0, |
11343788 | 4208 | mod(list(convert(OP_ANONLIST, 0, o)), OP_REFGEN)); |
79072805 LW |
4209 | } |
4210 | ||
4211 | OP * | |
8ac85365 | 4212 | newANONHASH(OP *o) |
79072805 | 4213 | { |
93a17b20 | 4214 | return newUNOP(OP_REFGEN, 0, |
11343788 | 4215 | mod(list(convert(OP_ANONHASH, 0, o)), OP_REFGEN)); |
a0d0e21e LW |
4216 | } |
4217 | ||
4218 | OP * | |
8ac85365 | 4219 | newANONSUB(I32 floor, OP *proto, OP *block) |
a0d0e21e LW |
4220 | { |
4221 | return newUNOP(OP_REFGEN, 0, | |
4633a7c4 | 4222 | newSVOP(OP_ANONCODE, 0, (SV*)newSUB(floor, 0, proto, block))); |
79072805 LW |
4223 | } |
4224 | ||
4225 | OP * | |
8ac85365 | 4226 | oopsAV(OP *o) |
79072805 | 4227 | { |
ed6116ce LW |
4228 | switch (o->op_type) { |
4229 | case OP_PADSV: | |
4230 | o->op_type = OP_PADAV; | |
22c35a8c | 4231 | o->op_ppaddr = PL_ppaddr[OP_PADAV]; |
51e247a3 | 4232 | return ref(o, OP_RV2AV); |
ed6116ce LW |
4233 | |
4234 | case OP_RV2SV: | |
79072805 | 4235 | o->op_type = OP_RV2AV; |
22c35a8c | 4236 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
79072805 | 4237 | ref(o, OP_RV2AV); |
ed6116ce LW |
4238 | break; |
4239 | ||
4240 | default: | |
79072805 | 4241 | warn("oops: oopsAV"); |
ed6116ce LW |
4242 | break; |
4243 | } | |
79072805 LW |
4244 | return o; |
4245 | } | |
4246 | ||
4247 | OP * | |
8ac85365 | 4248 | oopsHV(OP *o) |
79072805 | 4249 | { |
ed6116ce LW |
4250 | switch (o->op_type) { |
4251 | case OP_PADSV: | |
4252 | case OP_PADAV: | |
4253 | o->op_type = OP_PADHV; | |
22c35a8c | 4254 | o->op_ppaddr = PL_ppaddr[OP_PADHV]; |
51e247a3 | 4255 | return ref(o, OP_RV2HV); |
ed6116ce LW |
4256 | |
4257 | case OP_RV2SV: | |
4258 | case OP_RV2AV: | |
79072805 | 4259 | o->op_type = OP_RV2HV; |
22c35a8c | 4260 | o->op_ppaddr = PL_ppaddr[OP_RV2HV]; |
79072805 | 4261 | ref(o, OP_RV2HV); |
ed6116ce LW |
4262 | break; |
4263 | ||
4264 | default: | |
79072805 | 4265 | warn("oops: oopsHV"); |
ed6116ce LW |
4266 | break; |
4267 | } | |
79072805 LW |
4268 | return o; |
4269 | } | |
4270 | ||
4271 | OP * | |
8ac85365 | 4272 | newAVREF(OP *o) |
79072805 | 4273 | { |
ed6116ce LW |
4274 | if (o->op_type == OP_PADANY) { |
4275 | o->op_type = OP_PADAV; | |
22c35a8c | 4276 | o->op_ppaddr = PL_ppaddr[OP_PADAV]; |
93a17b20 | 4277 | return o; |
ed6116ce | 4278 | } |
79072805 LW |
4279 | return newUNOP(OP_RV2AV, 0, scalar(o)); |
4280 | } | |
4281 | ||
4282 | OP * | |
8ac85365 | 4283 | newGVREF(I32 type, OP *o) |
79072805 | 4284 | { |
a0d0e21e LW |
4285 | if (type == OP_MAPSTART) |
4286 | return newUNOP(OP_NULL, 0, o); | |
748a9306 | 4287 | return ref(newUNOP(OP_RV2GV, OPf_REF, o), type); |
79072805 LW |
4288 | } |
4289 | ||
4290 | OP * | |
8ac85365 | 4291 | newHVREF(OP *o) |
79072805 | 4292 | { |
ed6116ce LW |
4293 | if (o->op_type == OP_PADANY) { |
4294 | o->op_type = OP_PADHV; | |
22c35a8c | 4295 | o->op_ppaddr = PL_ppaddr[OP_PADHV]; |
93a17b20 | 4296 | return o; |
ed6116ce | 4297 | } |
79072805 LW |
4298 | return newUNOP(OP_RV2HV, 0, scalar(o)); |
4299 | } | |
4300 | ||
4301 | OP * | |
8ac85365 | 4302 | oopsCV(OP *o) |
79072805 | 4303 | { |
463ee0b2 | 4304 | croak("NOT IMPL LINE %d",__LINE__); |
79072805 LW |
4305 | /* STUB */ |
4306 | return o; | |
4307 | } | |
4308 | ||
4309 | OP * | |
8ac85365 | 4310 | newCVREF(I32 flags, OP *o) |
79072805 | 4311 | { |
c07a80fd | 4312 | return newUNOP(OP_RV2CV, flags, scalar(o)); |
79072805 LW |
4313 | } |
4314 | ||
4315 | OP * | |
8ac85365 | 4316 | newSVREF(OP *o) |
79072805 | 4317 | { |
ed6116ce LW |
4318 | if (o->op_type == OP_PADANY) { |
4319 | o->op_type = OP_PADSV; | |
22c35a8c | 4320 | o->op_ppaddr = PL_ppaddr[OP_PADSV]; |
93a17b20 | 4321 | return o; |
ed6116ce | 4322 | } |
224a4551 MB |
4323 | else if (o->op_type == OP_THREADSV && !(o->op_flags & OPpDONE_SVREF)) { |
4324 | o->op_flags |= OPpDONE_SVREF; | |
a863c7d1 | 4325 | return o; |
224a4551 | 4326 | } |
79072805 LW |
4327 | return newUNOP(OP_RV2SV, 0, scalar(o)); |
4328 | } | |
4329 | ||
4330 | /* Check routines. */ | |
4331 | ||
4332 | OP * | |
8ac85365 | 4333 | ck_anoncode(OP *o) |
5f05dabc | 4334 | { |
178c6305 CS |
4335 | PADOFFSET ix; |
4336 | SV* name; | |
4337 | ||
4338 | name = NEWSV(1106,0); | |
4339 | sv_upgrade(name, SVt_PVNV); | |
4340 | sv_setpvn(name, "&", 1); | |
4341 | SvIVX(name) = -1; | |
4342 | SvNVX(name) = 1; | |
5dc0d613 | 4343 | ix = pad_alloc(o->op_type, SVs_PADMY); |
3280af22 NIS |
4344 | av_store(PL_comppad_name, ix, name); |
4345 | av_store(PL_comppad, ix, cSVOPo->op_sv); | |
5dc0d613 MB |
4346 | SvPADMY_on(cSVOPo->op_sv); |
4347 | cSVOPo->op_sv = Nullsv; | |
4348 | cSVOPo->op_targ = ix; | |
4349 | return o; | |
5f05dabc | 4350 | } |
4351 | ||
4352 | OP * | |
8ac85365 | 4353 | ck_bitop(OP *o) |
55497cff | 4354 | { |
3280af22 | 4355 | o->op_private = PL_hints; |
5dc0d613 | 4356 | return o; |
55497cff | 4357 | } |
4358 | ||
4359 | OP * | |
8ac85365 | 4360 | ck_concat(OP *o) |
79072805 | 4361 | { |
11343788 MB |
4362 | if (cUNOPo->op_first->op_type == OP_CONCAT) |
4363 | o->op_flags |= OPf_STACKED; | |
4364 | return o; | |
79072805 LW |
4365 | } |
4366 | ||
4367 | OP * | |
8ac85365 | 4368 | ck_spair(OP *o) |
79072805 | 4369 | { |
11343788 | 4370 | if (o->op_flags & OPf_KIDS) { |
79072805 | 4371 | OP* newop; |
a0d0e21e | 4372 | OP* kid; |
5dc0d613 MB |
4373 | OPCODE type = o->op_type; |
4374 | o = modkids(ck_fun(o), type); | |
11343788 | 4375 | kid = cUNOPo->op_first; |
a0d0e21e LW |
4376 | newop = kUNOP->op_first->op_sibling; |
4377 | if (newop && | |
4378 | (newop->op_sibling || | |
22c35a8c | 4379 | !(PL_opargs[newop->op_type] & OA_RETSCALAR) || |
a0d0e21e LW |
4380 | newop->op_type == OP_PADAV || newop->op_type == OP_PADHV || |
4381 | newop->op_type == OP_RV2AV || newop->op_type == OP_RV2HV)) { | |
aeea060c | 4382 | |
11343788 | 4383 | return o; |
a0d0e21e LW |
4384 | } |
4385 | op_free(kUNOP->op_first); | |
4386 | kUNOP->op_first = newop; | |
4387 | } | |
22c35a8c | 4388 | o->op_ppaddr = PL_ppaddr[++o->op_type]; |
11343788 | 4389 | return ck_fun(o); |
a0d0e21e LW |
4390 | } |
4391 | ||
4392 | OP * | |
8ac85365 | 4393 | ck_delete(OP *o) |
a0d0e21e | 4394 | { |
11343788 | 4395 | o = ck_fun(o); |
5dc0d613 | 4396 | o->op_private = 0; |
11343788 MB |
4397 | if (o->op_flags & OPf_KIDS) { |
4398 | OP *kid = cUNOPo->op_first; | |
5f05dabc | 4399 | if (kid->op_type == OP_HSLICE) |
5dc0d613 | 4400 | o->op_private |= OPpSLICE; |
5f05dabc | 4401 | else if (kid->op_type != OP_HELEM) |
4402 | croak("%s argument is not a HASH element or slice", | |
22c35a8c | 4403 | PL_op_desc[o->op_type]); |
a0d0e21e | 4404 | null(kid); |
79072805 | 4405 | } |
11343788 | 4406 | return o; |
79072805 LW |
4407 | } |
4408 | ||
4409 | OP * | |
8ac85365 | 4410 | ck_eof(OP *o) |
79072805 | 4411 | { |
11343788 | 4412 | I32 type = o->op_type; |
79072805 | 4413 | |
11343788 MB |
4414 | if (o->op_flags & OPf_KIDS) { |
4415 | if (cLISTOPo->op_first->op_type == OP_STUB) { | |
4416 | op_free(o); | |
4417 | o = newUNOP(type, OPf_SPECIAL, | |
d58bf5aa | 4418 | newGVOP(OP_GV, 0, gv_fetchpv("main::ARGV", TRUE, SVt_PVAV))); |
8990e307 | 4419 | } |
11343788 | 4420 | return ck_fun(o); |
79072805 | 4421 | } |
11343788 | 4422 | return o; |
79072805 LW |
4423 | } |
4424 | ||
4425 | OP * | |
8ac85365 | 4426 | ck_eval(OP *o) |
79072805 | 4427 | { |
3280af22 | 4428 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 MB |
4429 | if (o->op_flags & OPf_KIDS) { |
4430 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 | 4431 | |
93a17b20 | 4432 | if (!kid) { |
11343788 MB |
4433 | o->op_flags &= ~OPf_KIDS; |
4434 | null(o); | |
79072805 LW |
4435 | } |
4436 | else if (kid->op_type == OP_LINESEQ) { | |
4437 | LOGOP *enter; | |
4438 | ||
11343788 MB |
4439 | kid->op_next = o->op_next; |
4440 | cUNOPo->op_first = 0; | |
4441 | op_free(o); | |
79072805 LW |
4442 | |
4443 | Newz(1101, enter, 1, LOGOP); | |
4444 | enter->op_type = OP_ENTERTRY; | |
22c35a8c | 4445 | enter->op_ppaddr = PL_ppaddr[OP_ENTERTRY]; |
79072805 LW |
4446 | enter->op_private = 0; |
4447 | ||
4448 | /* establish postfix order */ | |
4449 | enter->op_next = (OP*)enter; | |
4450 | ||
11343788 MB |
4451 | o = prepend_elem(OP_LINESEQ, (OP*)enter, (OP*)kid); |
4452 | o->op_type = OP_LEAVETRY; | |
22c35a8c | 4453 | o->op_ppaddr = PL_ppaddr[OP_LEAVETRY]; |
11343788 MB |
4454 | enter->op_other = o; |
4455 | return o; | |
79072805 | 4456 | } |
c7cc6f1c | 4457 | else |
473986ff | 4458 | scalar((OP*)kid); |
79072805 LW |
4459 | } |
4460 | else { | |
11343788 | 4461 | op_free(o); |
54b9620d | 4462 | o = newUNOP(OP_ENTEREVAL, 0, newDEFSVOP()); |
79072805 | 4463 | } |
3280af22 | 4464 | o->op_targ = (PADOFFSET)PL_hints; |
11343788 | 4465 | return o; |
79072805 LW |
4466 | } |
4467 | ||
4468 | OP * | |
8ac85365 | 4469 | ck_exec(OP *o) |
79072805 LW |
4470 | { |
4471 | OP *kid; | |
11343788 MB |
4472 | if (o->op_flags & OPf_STACKED) { |
4473 | o = ck_fun(o); | |
4474 | kid = cUNOPo->op_first->op_sibling; | |
8990e307 LW |
4475 | if (kid->op_type == OP_RV2GV) |
4476 | null(kid); | |
79072805 | 4477 | } |
463ee0b2 | 4478 | else |
11343788 MB |
4479 | o = listkids(o); |
4480 | return o; | |
79072805 LW |
4481 | } |
4482 | ||
4483 | OP * | |
8ac85365 | 4484 | ck_exists(OP *o) |
5f05dabc | 4485 | { |
5196be3e MB |
4486 | o = ck_fun(o); |
4487 | if (o->op_flags & OPf_KIDS) { | |
4488 | OP *kid = cUNOPo->op_first; | |
5f05dabc | 4489 | if (kid->op_type != OP_HELEM) |
22c35a8c | 4490 | croak("%s argument is not a HASH element", PL_op_desc[o->op_type]); |
5f05dabc | 4491 | null(kid); |
4492 | } | |
5196be3e | 4493 | return o; |
5f05dabc | 4494 | } |
4495 | ||
22c35a8c | 4496 | #if 0 |
5f05dabc | 4497 | OP * |
8ac85365 | 4498 | ck_gvconst(register OP *o) |
79072805 LW |
4499 | { |
4500 | o = fold_constants(o); | |
4501 | if (o->op_type == OP_CONST) | |
4502 | o->op_type = OP_GV; | |
4503 | return o; | |
4504 | } | |
22c35a8c | 4505 | #endif |
79072805 LW |
4506 | |
4507 | OP * | |
8ac85365 | 4508 | ck_rvconst(register OP *o) |
79072805 | 4509 | { |
11343788 MB |
4510 | dTHR; |
4511 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
85e6fe83 | 4512 | |
3280af22 | 4513 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
79072805 | 4514 | if (kid->op_type == OP_CONST) { |
44a8e56a | 4515 | char *name; |
4516 | int iscv; | |
4517 | GV *gv; | |
779c5bc9 | 4518 | SV *kidsv = kid->op_sv; |
2d8e6c8d | 4519 | STRLEN n_a; |
44a8e56a | 4520 | |
779c5bc9 GS |
4521 | /* Is it a constant from cv_const_sv()? */ |
4522 | if (SvROK(kidsv) && SvREADONLY(kidsv)) { | |
4523 | SV *rsv = SvRV(kidsv); | |
4524 | int svtype = SvTYPE(rsv); | |
4525 | char *badtype = Nullch; | |
4526 | ||
4527 | switch (o->op_type) { | |
4528 | case OP_RV2SV: | |
4529 | if (svtype > SVt_PVMG) | |
4530 | badtype = "a SCALAR"; | |
4531 | break; | |
4532 | case OP_RV2AV: | |
4533 | if (svtype != SVt_PVAV) | |
4534 | badtype = "an ARRAY"; | |
4535 | break; | |
4536 | case OP_RV2HV: | |
4537 | if (svtype != SVt_PVHV) { | |
4538 | if (svtype == SVt_PVAV) { /* pseudohash? */ | |
4539 | SV **ksv = av_fetch((AV*)rsv, 0, FALSE); | |
4540 | if (ksv && SvROK(*ksv) | |
4541 | && SvTYPE(SvRV(*ksv)) == SVt_PVHV) | |
4542 | { | |
4543 | break; | |
4544 | } | |
4545 | } | |
4546 | badtype = "a HASH"; | |
4547 | } | |
4548 | break; | |
4549 | case OP_RV2CV: | |
4550 | if (svtype != SVt_PVCV) | |
4551 | badtype = "a CODE"; | |
4552 | break; | |
4553 | } | |
4554 | if (badtype) | |
4555 | croak("Constant is not %s reference", badtype); | |
4556 | return o; | |
4557 | } | |
2d8e6c8d | 4558 | name = SvPV(kidsv, n_a); |
3280af22 | 4559 | if ((PL_hints & HINT_STRICT_REFS) && (kid->op_private & OPpCONST_BARE)) { |
44a8e56a | 4560 | char *badthing = Nullch; |
5dc0d613 | 4561 | switch (o->op_type) { |
44a8e56a | 4562 | case OP_RV2SV: |
4563 | badthing = "a SCALAR"; | |
4564 | break; | |
4565 | case OP_RV2AV: | |
4566 | badthing = "an ARRAY"; | |
4567 | break; | |
4568 | case OP_RV2HV: | |
4569 | badthing = "a HASH"; | |
4570 | break; | |
4571 | } | |
4572 | if (badthing) | |
4573 | croak( | |
4574 | "Can't use bareword (\"%s\") as %s ref while \"strict refs\" in use", | |
4575 | name, badthing); | |
4576 | } | |
93233ece CS |
4577 | /* |
4578 | * This is a little tricky. We only want to add the symbol if we | |
4579 | * didn't add it in the lexer. Otherwise we get duplicate strict | |
4580 | * warnings. But if we didn't add it in the lexer, we must at | |
4581 | * least pretend like we wanted to add it even if it existed before, | |
4582 | * or we get possible typo warnings. OPpCONST_ENTERED says | |
4583 | * whether the lexer already added THIS instance of this symbol. | |
4584 | */ | |
5196be3e | 4585 | iscv = (o->op_type == OP_RV2CV) * 2; |
93233ece | 4586 | do { |
44a8e56a | 4587 | gv = gv_fetchpv(name, |
748a9306 | 4588 | iscv | !(kid->op_private & OPpCONST_ENTERED), |
a0d0e21e LW |
4589 | iscv |
4590 | ? SVt_PVCV | |
11343788 | 4591 | : o->op_type == OP_RV2SV |
a0d0e21e | 4592 | ? SVt_PV |
11343788 | 4593 | : o->op_type == OP_RV2AV |
a0d0e21e | 4594 | ? SVt_PVAV |
11343788 | 4595 | : o->op_type == OP_RV2HV |
a0d0e21e LW |
4596 | ? SVt_PVHV |
4597 | : SVt_PVGV); | |
93233ece CS |
4598 | } while (!gv && !(kid->op_private & OPpCONST_ENTERED) && !iscv++); |
4599 | if (gv) { | |
4600 | kid->op_type = OP_GV; | |
4601 | SvREFCNT_dec(kid->op_sv); | |
4602 | kid->op_sv = SvREFCNT_inc(gv); | |
a0d0e21e | 4603 | } |
79072805 | 4604 | } |
11343788 | 4605 | return o; |
79072805 LW |
4606 | } |
4607 | ||
4608 | OP * | |
8ac85365 | 4609 | ck_ftst(OP *o) |
79072805 | 4610 | { |
11343788 MB |
4611 | dTHR; |
4612 | I32 type = o->op_type; | |
79072805 | 4613 | |
11343788 MB |
4614 | if (o->op_flags & OPf_REF) |
4615 | return o; | |
79072805 | 4616 | |
108ed793 | 4617 | if (o->op_flags & OPf_KIDS && cUNOPo->op_first->op_type != OP_STUB) { |
11343788 | 4618 | SVOP *kid = (SVOP*)cUNOPo->op_first; |
79072805 LW |
4619 | |
4620 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
2d8e6c8d | 4621 | STRLEN n_a; |
a0d0e21e | 4622 | OP *newop = newGVOP(type, OPf_REF, |
2d8e6c8d | 4623 | gv_fetchpv(SvPVx(kid->op_sv, n_a), TRUE, SVt_PVIO)); |
11343788 | 4624 | op_free(o); |
79072805 LW |
4625 | return newop; |
4626 | } | |
4627 | } | |
4628 | else { | |
11343788 | 4629 | op_free(o); |
79072805 | 4630 | if (type == OP_FTTTY) |
fb73857a | 4631 | return newGVOP(type, OPf_REF, gv_fetchpv("main::STDIN", TRUE, |
85e6fe83 | 4632 | SVt_PVIO)); |
79072805 | 4633 | else |
54b9620d | 4634 | return newUNOP(type, 0, newDEFSVOP()); |
79072805 | 4635 | } |
11343788 | 4636 | return o; |
79072805 LW |
4637 | } |
4638 | ||
4639 | OP * | |
8ac85365 | 4640 | ck_fun(OP *o) |
79072805 | 4641 | { |
11343788 | 4642 | dTHR; |
79072805 LW |
4643 | register OP *kid; |
4644 | OP **tokid; | |
4645 | OP *sibl; | |
4646 | I32 numargs = 0; | |
11343788 | 4647 | int type = o->op_type; |
22c35a8c | 4648 | register I32 oa = PL_opargs[type] >> OASHIFT; |
aeea060c | 4649 | |
11343788 | 4650 | if (o->op_flags & OPf_STACKED) { |
79072805 LW |
4651 | if ((oa & OA_OPTIONAL) && (oa >> 4) && !((oa >> 4) & OA_OPTIONAL)) |
4652 | oa &= ~OA_OPTIONAL; | |
4653 | else | |
11343788 | 4654 | return no_fh_allowed(o); |
79072805 LW |
4655 | } |
4656 | ||
11343788 | 4657 | if (o->op_flags & OPf_KIDS) { |
2d8e6c8d | 4658 | STRLEN n_a; |
11343788 MB |
4659 | tokid = &cLISTOPo->op_first; |
4660 | kid = cLISTOPo->op_first; | |
8990e307 LW |
4661 | if (kid->op_type == OP_PUSHMARK || |
4662 | kid->op_type == OP_NULL && kid->op_targ == OP_PUSHMARK) | |
4663 | { | |
79072805 LW |
4664 | tokid = &kid->op_sibling; |
4665 | kid = kid->op_sibling; | |
4666 | } | |
22c35a8c | 4667 | if (!kid && PL_opargs[type] & OA_DEFGV) |
54b9620d | 4668 | *tokid = kid = newDEFSVOP(); |
79072805 LW |
4669 | |
4670 | while (oa && kid) { | |
4671 | numargs++; | |
4672 | sibl = kid->op_sibling; | |
4673 | switch (oa & 7) { | |
4674 | case OA_SCALAR: | |
62c18ce2 GS |
4675 | /* list seen where single (scalar) arg expected? */ |
4676 | if (numargs == 1 && !(oa >> 4) | |
4677 | && kid->op_type == OP_LIST && type != OP_SCALAR) | |
4678 | { | |
4679 | return too_many_arguments(o,PL_op_desc[type]); | |
4680 | } | |
79072805 LW |
4681 | scalar(kid); |
4682 | break; | |
4683 | case OA_LIST: | |
4684 | if (oa < 16) { | |
4685 | kid = 0; | |
4686 | continue; | |
4687 | } | |
4688 | else | |
4689 | list(kid); | |
4690 | break; | |
4691 | case OA_AVREF: | |
4692 | if (kid->op_type == OP_CONST && | |
62c18ce2 GS |
4693 | (kid->op_private & OPpCONST_BARE)) |
4694 | { | |
2d8e6c8d | 4695 | char *name = SvPVx(((SVOP*)kid)->op_sv, n_a); |
79072805 | 4696 | OP *newop = newAVREF(newGVOP(OP_GV, 0, |
85e6fe83 | 4697 | gv_fetchpv(name, TRUE, SVt_PVAV) )); |
599cee73 PM |
4698 | if (ckWARN(WARN_SYNTAX)) |
4699 | warner(WARN_SYNTAX, | |
4700 | "Array @%s missing the @ in argument %ld of %s()", | |
22c35a8c | 4701 | name, (long)numargs, PL_op_desc[type]); |
79072805 LW |
4702 | op_free(kid); |
4703 | kid = newop; | |
4704 | kid->op_sibling = sibl; | |
4705 | *tokid = kid; | |
4706 | } | |
8990e307 | 4707 | else if (kid->op_type != OP_RV2AV && kid->op_type != OP_PADAV) |
35cd451c | 4708 | bad_type(numargs, "array", PL_op_desc[type], kid); |
a0d0e21e | 4709 | mod(kid, type); |
79072805 LW |
4710 | break; |
4711 | case OA_HVREF: | |
4712 | if (kid->op_type == OP_CONST && | |
62c18ce2 GS |
4713 | (kid->op_private & OPpCONST_BARE)) |
4714 | { | |
2d8e6c8d | 4715 | char *name = SvPVx(((SVOP*)kid)->op_sv, n_a); |
79072805 | 4716 | OP *newop = newHVREF(newGVOP(OP_GV, 0, |
85e6fe83 | 4717 | gv_fetchpv(name, TRUE, SVt_PVHV) )); |
599cee73 PM |
4718 | if (ckWARN(WARN_SYNTAX)) |
4719 | warner(WARN_SYNTAX, | |
4720 | "Hash %%%s missing the %% in argument %ld of %s()", | |
22c35a8c | 4721 | name, (long)numargs, PL_op_desc[type]); |
79072805 LW |
4722 | op_free(kid); |
4723 | kid = newop; | |
4724 | kid->op_sibling = sibl; | |
4725 | *tokid = kid; | |
4726 | } | |
8990e307 | 4727 | else if (kid->op_type != OP_RV2HV && kid->op_type != OP_PADHV) |
35cd451c | 4728 | bad_type(numargs, "hash", PL_op_desc[type], kid); |
a0d0e21e | 4729 | mod(kid, type); |
79072805 LW |
4730 | break; |
4731 | case OA_CVREF: | |
4732 | { | |
a0d0e21e | 4733 | OP *newop = newUNOP(OP_NULL, 0, kid); |
79072805 LW |
4734 | kid->op_sibling = 0; |
4735 | linklist(kid); | |
4736 | newop->op_next = newop; | |
4737 | kid = newop; | |
4738 | kid->op_sibling = sibl; | |
4739 | *tokid = kid; | |
4740 | } | |
4741 | break; | |
4742 | case OA_FILEREF: | |
c340be78 | 4743 | if (kid->op_type != OP_GV && kid->op_type != OP_RV2GV) { |
79072805 | 4744 | if (kid->op_type == OP_CONST && |
62c18ce2 GS |
4745 | (kid->op_private & OPpCONST_BARE)) |
4746 | { | |
79072805 | 4747 | OP *newop = newGVOP(OP_GV, 0, |
2d8e6c8d | 4748 | gv_fetchpv(SvPVx(((SVOP*)kid)->op_sv, n_a), TRUE, |
85e6fe83 | 4749 | SVt_PVIO) ); |
79072805 LW |
4750 | op_free(kid); |
4751 | kid = newop; | |
4752 | } | |
1ea32a52 GS |
4753 | else if (kid->op_type == OP_READLINE) { |
4754 | /* neophyte patrol: open(<FH>), close(<FH>) etc. */ | |
4755 | bad_type(numargs, "HANDLE", PL_op_desc[o->op_type], kid); | |
4756 | } | |
79072805 | 4757 | else { |
35cd451c GS |
4758 | I32 flags = OPf_SPECIAL; |
4759 | /* is this op a FH constructor? */ | |
4760 | if (is_handle_constructor(o,numargs)) | |
4761 | flags = 0; | |
79072805 | 4762 | kid->op_sibling = 0; |
35cd451c | 4763 | kid = newUNOP(OP_RV2GV, flags, scalar(kid)); |
79072805 LW |
4764 | } |
4765 | kid->op_sibling = sibl; | |
4766 | *tokid = kid; | |
4767 | } | |
4768 | scalar(kid); | |
4769 | break; | |
4770 | case OA_SCALARREF: | |
a0d0e21e | 4771 | mod(scalar(kid), type); |
79072805 LW |
4772 | break; |
4773 | } | |
4774 | oa >>= 4; | |
4775 | tokid = &kid->op_sibling; | |
4776 | kid = kid->op_sibling; | |
4777 | } | |
11343788 | 4778 | o->op_private |= numargs; |
79072805 | 4779 | if (kid) |
22c35a8c | 4780 | return too_many_arguments(o,PL_op_desc[o->op_type]); |
11343788 | 4781 | listkids(o); |
79072805 | 4782 | } |
22c35a8c | 4783 | else if (PL_opargs[type] & OA_DEFGV) { |
11343788 | 4784 | op_free(o); |
54b9620d | 4785 | return newUNOP(type, 0, newDEFSVOP()); |
a0d0e21e LW |
4786 | } |
4787 | ||
79072805 LW |
4788 | if (oa) { |
4789 | while (oa & OA_OPTIONAL) | |
4790 | oa >>= 4; | |
4791 | if (oa && oa != OA_LIST) | |
22c35a8c | 4792 | return too_few_arguments(o,PL_op_desc[o->op_type]); |
79072805 | 4793 | } |
11343788 | 4794 | return o; |
79072805 LW |
4795 | } |
4796 | ||
4797 | OP * | |
8ac85365 | 4798 | ck_glob(OP *o) |
79072805 | 4799 | { |
fb73857a | 4800 | GV *gv; |
4801 | ||
1f2bfc8a | 4802 | if ((o->op_flags & OPf_KIDS) && !cLISTOPo->op_first->op_sibling) |
54b9620d | 4803 | append_elem(OP_GLOB, o, newDEFSVOP()); |
fb73857a | 4804 | |
4805 | if (!((gv = gv_fetchpv("glob", FALSE, SVt_PVCV)) && GvIMPORTED_CV(gv))) | |
4806 | gv = gv_fetchpv("CORE::GLOBAL::glob", FALSE, SVt_PVCV); | |
b1cb66bf | 4807 | |
4808 | if (gv && GvIMPORTED_CV(gv)) { | |
5196be3e | 4809 | append_elem(OP_GLOB, o, |
80252599 | 4810 | newSVOP(OP_CONST, 0, newSViv(PL_glob_index++))); |
1f2bfc8a | 4811 | o->op_type = OP_LIST; |
22c35a8c | 4812 | o->op_ppaddr = PL_ppaddr[OP_LIST]; |
1f2bfc8a | 4813 | cLISTOPo->op_first->op_type = OP_PUSHMARK; |
22c35a8c | 4814 | cLISTOPo->op_first->op_ppaddr = PL_ppaddr[OP_PUSHMARK]; |
1f2bfc8a | 4815 | o = newUNOP(OP_ENTERSUB, OPf_STACKED, |
aeea060c | 4816 | append_elem(OP_LIST, o, |
1f2bfc8a MB |
4817 | scalar(newUNOP(OP_RV2CV, 0, |
4818 | newGVOP(OP_GV, 0, gv))))); | |
d58bf5aa MB |
4819 | o = newUNOP(OP_NULL, 0, ck_subr(o)); |
4820 | o->op_targ = OP_GLOB; /* hint at what it used to be */ | |
4821 | return o; | |
b1cb66bf | 4822 | } |
4823 | gv = newGVgen("main"); | |
a0d0e21e | 4824 | gv_IOadd(gv); |
11343788 MB |
4825 | append_elem(OP_GLOB, o, newGVOP(OP_GV, 0, gv)); |
4826 | scalarkids(o); | |
4827 | return ck_fun(o); | |
79072805 LW |
4828 | } |
4829 | ||
4830 | OP * | |
8ac85365 | 4831 | ck_grep(OP *o) |
79072805 LW |
4832 | { |
4833 | LOGOP *gwop; | |
4834 | OP *kid; | |
11343788 | 4835 | OPCODE type = o->op_type == OP_GREPSTART ? OP_GREPWHILE : OP_MAPWHILE; |
79072805 | 4836 | |
22c35a8c | 4837 | o->op_ppaddr = PL_ppaddr[OP_GREPSTART]; |
a0d0e21e | 4838 | Newz(1101, gwop, 1, LOGOP); |
aeea060c | 4839 | |
11343788 | 4840 | if (o->op_flags & OPf_STACKED) { |
a0d0e21e | 4841 | OP* k; |
11343788 MB |
4842 | o = ck_sort(o); |
4843 | kid = cLISTOPo->op_first->op_sibling; | |
4844 | for (k = cLISTOPo->op_first->op_sibling->op_next; k; k = k->op_next) { | |
a0d0e21e LW |
4845 | kid = k; |
4846 | } | |
4847 | kid->op_next = (OP*)gwop; | |
11343788 | 4848 | o->op_flags &= ~OPf_STACKED; |
93a17b20 | 4849 | } |
11343788 | 4850 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e LW |
4851 | if (type == OP_MAPWHILE) |
4852 | list(kid); | |
4853 | else | |
4854 | scalar(kid); | |
11343788 | 4855 | o = ck_fun(o); |
3280af22 | 4856 | if (PL_error_count) |
11343788 | 4857 | return o; |
aeea060c | 4858 | kid = cLISTOPo->op_first->op_sibling; |
79072805 | 4859 | if (kid->op_type != OP_NULL) |
463ee0b2 | 4860 | croak("panic: ck_grep"); |
79072805 LW |
4861 | kid = kUNOP->op_first; |
4862 | ||
a0d0e21e | 4863 | gwop->op_type = type; |
22c35a8c | 4864 | gwop->op_ppaddr = PL_ppaddr[type]; |
11343788 | 4865 | gwop->op_first = listkids(o); |
79072805 LW |
4866 | gwop->op_flags |= OPf_KIDS; |
4867 | gwop->op_private = 1; | |
4868 | gwop->op_other = LINKLIST(kid); | |
a0d0e21e | 4869 | gwop->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 LW |
4870 | kid->op_next = (OP*)gwop; |
4871 | ||
11343788 | 4872 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e | 4873 | if (!kid || !kid->op_sibling) |
22c35a8c | 4874 | return too_few_arguments(o,PL_op_desc[o->op_type]); |
a0d0e21e LW |
4875 | for (kid = kid->op_sibling; kid; kid = kid->op_sibling) |
4876 | mod(kid, OP_GREPSTART); | |
4877 | ||
79072805 LW |
4878 | return (OP*)gwop; |
4879 | } | |
4880 | ||
4881 | OP * | |
8ac85365 | 4882 | ck_index(OP *o) |
79072805 | 4883 | { |
11343788 MB |
4884 | if (o->op_flags & OPf_KIDS) { |
4885 | OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
0b71040e LW |
4886 | if (kid) |
4887 | kid = kid->op_sibling; /* get past "big" */ | |
79072805 | 4888 | if (kid && kid->op_type == OP_CONST) |
2779dcf1 | 4889 | fbm_compile(((SVOP*)kid)->op_sv, 0); |
79072805 | 4890 | } |
11343788 | 4891 | return ck_fun(o); |
79072805 LW |
4892 | } |
4893 | ||
4894 | OP * | |
8ac85365 | 4895 | ck_lengthconst(OP *o) |
79072805 LW |
4896 | { |
4897 | /* XXX length optimization goes here */ | |
11343788 | 4898 | return ck_fun(o); |
79072805 LW |
4899 | } |
4900 | ||
4901 | OP * | |
8ac85365 | 4902 | ck_lfun(OP *o) |
79072805 | 4903 | { |
5dc0d613 MB |
4904 | OPCODE type = o->op_type; |
4905 | return modkids(ck_fun(o), type); | |
79072805 LW |
4906 | } |
4907 | ||
4908 | OP * | |
8ac85365 | 4909 | ck_rfun(OP *o) |
8990e307 | 4910 | { |
5dc0d613 MB |
4911 | OPCODE type = o->op_type; |
4912 | return refkids(ck_fun(o), type); | |
8990e307 LW |
4913 | } |
4914 | ||
4915 | OP * | |
8ac85365 | 4916 | ck_listiob(OP *o) |
79072805 LW |
4917 | { |
4918 | register OP *kid; | |
aeea060c | 4919 | |
11343788 | 4920 | kid = cLISTOPo->op_first; |
79072805 | 4921 | if (!kid) { |
11343788 MB |
4922 | o = force_list(o); |
4923 | kid = cLISTOPo->op_first; | |
79072805 LW |
4924 | } |
4925 | if (kid->op_type == OP_PUSHMARK) | |
4926 | kid = kid->op_sibling; | |
11343788 | 4927 | if (kid && o->op_flags & OPf_STACKED) |
79072805 LW |
4928 | kid = kid->op_sibling; |
4929 | else if (kid && !kid->op_sibling) { /* print HANDLE; */ | |
4930 | if (kid->op_type == OP_CONST && kid->op_private & OPpCONST_BARE) { | |
11343788 | 4931 | o->op_flags |= OPf_STACKED; /* make it a filehandle */ |
748a9306 | 4932 | kid = newUNOP(OP_RV2GV, OPf_REF, scalar(kid)); |
11343788 MB |
4933 | cLISTOPo->op_first->op_sibling = kid; |
4934 | cLISTOPo->op_last = kid; | |
79072805 LW |
4935 | kid = kid->op_sibling; |
4936 | } | |
4937 | } | |
4938 | ||
4939 | if (!kid) | |
54b9620d | 4940 | append_elem(o->op_type, o, newDEFSVOP()); |
79072805 | 4941 | |
5dc0d613 | 4942 | o = listkids(o); |
bbce6d69 | 4943 | |
5dc0d613 | 4944 | o->op_private = 0; |
36477c24 | 4945 | #ifdef USE_LOCALE |
3280af22 | 4946 | if (PL_hints & HINT_LOCALE) |
5dc0d613 | 4947 | o->op_private |= OPpLOCALE; |
bbce6d69 | 4948 | #endif |
4949 | ||
5dc0d613 | 4950 | return o; |
bbce6d69 | 4951 | } |
4952 | ||
4953 | OP * | |
8ac85365 | 4954 | ck_fun_locale(OP *o) |
bbce6d69 | 4955 | { |
5dc0d613 | 4956 | o = ck_fun(o); |
bbce6d69 | 4957 | |
5dc0d613 | 4958 | o->op_private = 0; |
36477c24 | 4959 | #ifdef USE_LOCALE |
3280af22 | 4960 | if (PL_hints & HINT_LOCALE) |
5dc0d613 | 4961 | o->op_private |= OPpLOCALE; |
bbce6d69 | 4962 | #endif |
4963 | ||
5dc0d613 | 4964 | return o; |
bbce6d69 | 4965 | } |
4966 | ||
4967 | OP * | |
8ac85365 | 4968 | ck_scmp(OP *o) |
bbce6d69 | 4969 | { |
5dc0d613 | 4970 | o->op_private = 0; |
36477c24 | 4971 | #ifdef USE_LOCALE |
3280af22 | 4972 | if (PL_hints & HINT_LOCALE) |
5dc0d613 | 4973 | o->op_private |= OPpLOCALE; |
bbce6d69 | 4974 | #endif |
36477c24 | 4975 | |
5dc0d613 | 4976 | return o; |
79072805 LW |
4977 | } |
4978 | ||
4979 | OP * | |
8ac85365 | 4980 | ck_match(OP *o) |
79072805 | 4981 | { |
5dc0d613 | 4982 | o->op_private |= OPpRUNTIME; |
11343788 | 4983 | return o; |
79072805 LW |
4984 | } |
4985 | ||
4986 | OP * | |
8ac85365 | 4987 | ck_null(OP *o) |
79072805 | 4988 | { |
11343788 | 4989 | return o; |
79072805 LW |
4990 | } |
4991 | ||
4992 | OP * | |
8ac85365 | 4993 | ck_repeat(OP *o) |
79072805 | 4994 | { |
11343788 MB |
4995 | if (cBINOPo->op_first->op_flags & OPf_PARENS) { |
4996 | o->op_private |= OPpREPEAT_DOLIST; | |
4997 | cBINOPo->op_first = force_list(cBINOPo->op_first); | |
79072805 LW |
4998 | } |
4999 | else | |
11343788 MB |
5000 | scalar(o); |
5001 | return o; | |
79072805 LW |
5002 | } |
5003 | ||
5004 | OP * | |
8ac85365 | 5005 | ck_require(OP *o) |
8990e307 | 5006 | { |
11343788 MB |
5007 | if (o->op_flags & OPf_KIDS) { /* Shall we supply missing .pm? */ |
5008 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
8990e307 LW |
5009 | |
5010 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
8990e307 | 5011 | char *s; |
a0d0e21e LW |
5012 | for (s = SvPVX(kid->op_sv); *s; s++) { |
5013 | if (*s == ':' && s[1] == ':') { | |
5014 | *s = '/'; | |
1aef975c | 5015 | Move(s+2, s+1, strlen(s+2)+1, char); |
a0d0e21e LW |
5016 | --SvCUR(kid->op_sv); |
5017 | } | |
8990e307 | 5018 | } |
a0d0e21e | 5019 | sv_catpvn(kid->op_sv, ".pm", 3); |
8990e307 LW |
5020 | } |
5021 | } | |
11343788 | 5022 | return ck_fun(o); |
8990e307 LW |
5023 | } |
5024 | ||
22c35a8c | 5025 | #if 0 |
8990e307 | 5026 | OP * |
8ac85365 | 5027 | ck_retarget(OP *o) |
79072805 | 5028 | { |
463ee0b2 | 5029 | croak("NOT IMPL LINE %d",__LINE__); |
79072805 | 5030 | /* STUB */ |
11343788 | 5031 | return o; |
79072805 | 5032 | } |
22c35a8c | 5033 | #endif |
79072805 LW |
5034 | |
5035 | OP * | |
8ac85365 | 5036 | ck_select(OP *o) |
79072805 | 5037 | { |
c07a80fd | 5038 | OP* kid; |
11343788 MB |
5039 | if (o->op_flags & OPf_KIDS) { |
5040 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
2304df62 | 5041 | if (kid && kid->op_sibling) { |
11343788 | 5042 | o->op_type = OP_SSELECT; |
22c35a8c | 5043 | o->op_ppaddr = PL_ppaddr[OP_SSELECT]; |
11343788 MB |
5044 | o = ck_fun(o); |
5045 | return fold_constants(o); | |
79072805 LW |
5046 | } |
5047 | } | |
11343788 MB |
5048 | o = ck_fun(o); |
5049 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
c07a80fd | 5050 | if (kid && kid->op_type == OP_RV2GV) |
5051 | kid->op_private &= ~HINT_STRICT_REFS; | |
11343788 | 5052 | return o; |
79072805 LW |
5053 | } |
5054 | ||
5055 | OP * | |
8ac85365 | 5056 | ck_shift(OP *o) |
79072805 | 5057 | { |
11343788 | 5058 | I32 type = o->op_type; |
79072805 | 5059 | |
11343788 | 5060 | if (!(o->op_flags & OPf_KIDS)) { |
6d4ff0d2 MB |
5061 | OP *argop; |
5062 | ||
11343788 | 5063 | op_free(o); |
6d4ff0d2 | 5064 | #ifdef USE_THREADS |
533c011a | 5065 | if (!CvUNIQUE(PL_compcv)) { |
6d4ff0d2 | 5066 | argop = newOP(OP_PADAV, OPf_REF); |
6b88bc9c | 5067 | argop->op_targ = 0; /* PL_curpad[0] is @_ */ |
6d4ff0d2 MB |
5068 | } |
5069 | else { | |
5070 | argop = newUNOP(OP_RV2AV, 0, | |
5071 | scalar(newGVOP(OP_GV, 0, | |
5072 | gv_fetchpv("ARGV", TRUE, SVt_PVAV)))); | |
5073 | } | |
5074 | #else | |
5075 | argop = newUNOP(OP_RV2AV, 0, | |
3280af22 NIS |
5076 | scalar(newGVOP(OP_GV, 0, !CvUNIQUE(PL_compcv) ? |
5077 | PL_defgv : gv_fetchpv("ARGV", TRUE, SVt_PVAV)))); | |
6d4ff0d2 MB |
5078 | #endif /* USE_THREADS */ |
5079 | return newUNOP(type, 0, scalar(argop)); | |
79072805 | 5080 | } |
11343788 | 5081 | return scalar(modkids(ck_fun(o), type)); |
79072805 LW |
5082 | } |
5083 | ||
5084 | OP * | |
8ac85365 | 5085 | ck_sort(OP *o) |
79072805 | 5086 | { |
5dc0d613 | 5087 | o->op_private = 0; |
36477c24 | 5088 | #ifdef USE_LOCALE |
3280af22 | 5089 | if (PL_hints & HINT_LOCALE) |
5dc0d613 | 5090 | o->op_private |= OPpLOCALE; |
bbce6d69 | 5091 | #endif |
5092 | ||
9c007264 | 5093 | if (o->op_flags & OPf_STACKED) |
51a19bc0 | 5094 | simplify_sort(o); |
9c007264 | 5095 | if (o->op_flags & OPf_STACKED) { /* may have been cleared */ |
11343788 | 5096 | OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
463ee0b2 LW |
5097 | OP *k; |
5098 | kid = kUNOP->op_first; /* get past rv2gv */ | |
79072805 | 5099 | |
463ee0b2 | 5100 | if (kid->op_type == OP_SCOPE || kid->op_type == OP_LEAVE) { |
79072805 | 5101 | linklist(kid); |
463ee0b2 LW |
5102 | if (kid->op_type == OP_SCOPE) { |
5103 | k = kid->op_next; | |
5104 | kid->op_next = 0; | |
79072805 | 5105 | } |
463ee0b2 | 5106 | else if (kid->op_type == OP_LEAVE) { |
11343788 | 5107 | if (o->op_type == OP_SORT) { |
748a9306 LW |
5108 | null(kid); /* wipe out leave */ |
5109 | kid->op_next = kid; | |
463ee0b2 | 5110 | |
748a9306 LW |
5111 | for (k = kLISTOP->op_first->op_next; k; k = k->op_next) { |
5112 | if (k->op_next == kid) | |
5113 | k->op_next = 0; | |
5114 | } | |
463ee0b2 | 5115 | } |
748a9306 LW |
5116 | else |
5117 | kid->op_next = 0; /* just disconnect the leave */ | |
a0d0e21e | 5118 | k = kLISTOP->op_first; |
463ee0b2 | 5119 | } |
a0d0e21e LW |
5120 | peep(k); |
5121 | ||
11343788 | 5122 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
8990e307 | 5123 | null(kid); /* wipe out rv2gv */ |
11343788 | 5124 | if (o->op_type == OP_SORT) |
a0d0e21e LW |
5125 | kid->op_next = kid; |
5126 | else | |
5127 | kid->op_next = k; | |
11343788 | 5128 | o->op_flags |= OPf_SPECIAL; |
79072805 | 5129 | } |
c6e96bcb GS |
5130 | else if (kid->op_type == OP_RV2SV || kid->op_type == OP_PADSV) |
5131 | null(cLISTOPo->op_first->op_sibling); | |
79072805 | 5132 | } |
bbce6d69 | 5133 | |
11343788 | 5134 | return o; |
79072805 | 5135 | } |
bda4119b GS |
5136 | |
5137 | STATIC void | |
9c007264 JH |
5138 | simplify_sort(OP *o) |
5139 | { | |
51a19bc0 | 5140 | dTHR; |
9c007264 JH |
5141 | register OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
5142 | OP *k; | |
5143 | int reversed; | |
5144 | if (!(o->op_flags & OPf_STACKED)) | |
5145 | return; | |
5146 | kid = kUNOP->op_first; /* get past rv2gv */ | |
5147 | if (kid->op_type != OP_SCOPE) | |
5148 | return; | |
5149 | kid = kLISTOP->op_last; /* get past scope */ | |
5150 | switch(kid->op_type) { | |
5151 | case OP_NCMP: | |
5152 | case OP_I_NCMP: | |
5153 | case OP_SCMP: | |
5154 | break; | |
5155 | default: | |
5156 | return; | |
5157 | } | |
5158 | k = kid; /* remember this node*/ | |
5159 | if (kBINOP->op_first->op_type != OP_RV2SV) | |
5160 | return; | |
5161 | kid = kBINOP->op_first; /* get past cmp */ | |
5162 | if (kUNOP->op_first->op_type != OP_GV) | |
5163 | return; | |
5164 | kid = kUNOP->op_first; /* get past rv2sv */ | |
5165 | if (GvSTASH(kGVOP->op_gv) != PL_curstash) | |
5166 | return; | |
5167 | if (strEQ(GvNAME(kGVOP->op_gv), "a")) | |
5168 | reversed = 0; | |
5169 | else if(strEQ(GvNAME(kGVOP->op_gv), "b")) | |
5170 | reversed = 1; | |
5171 | else | |
5172 | return; | |
5173 | kid = k; /* back to cmp */ | |
5174 | if (kBINOP->op_last->op_type != OP_RV2SV) | |
5175 | return; | |
5176 | kid = kBINOP->op_last; /* down to 2nd arg */ | |
5177 | if (kUNOP->op_first->op_type != OP_GV) | |
5178 | return; | |
5179 | kid = kUNOP->op_first; /* get past rv2sv */ | |
5180 | if (GvSTASH(kGVOP->op_gv) != PL_curstash | |
5181 | || ( reversed | |
5182 | ? strNE(GvNAME(kGVOP->op_gv), "a") | |
5183 | : strNE(GvNAME(kGVOP->op_gv), "b"))) | |
5184 | return; | |
5185 | o->op_flags &= ~(OPf_STACKED | OPf_SPECIAL); | |
5186 | if (reversed) | |
5187 | o->op_private |= OPpSORT_REVERSE; | |
5188 | if (k->op_type == OP_NCMP) | |
5189 | o->op_private |= OPpSORT_NUMERIC; | |
5190 | if (k->op_type == OP_I_NCMP) | |
5191 | o->op_private |= OPpSORT_NUMERIC | OPpSORT_INTEGER; | |
5192 | op_free(cLISTOPo->op_first->op_sibling); /* delete comparison block */ | |
5193 | cLISTOPo->op_first->op_sibling = cLISTOPo->op_last; | |
5194 | cLISTOPo->op_children = 1; | |
5195 | } | |
79072805 LW |
5196 | |
5197 | OP * | |
8ac85365 | 5198 | ck_split(OP *o) |
79072805 LW |
5199 | { |
5200 | register OP *kid; | |
aeea060c | 5201 | |
11343788 MB |
5202 | if (o->op_flags & OPf_STACKED) |
5203 | return no_fh_allowed(o); | |
79072805 | 5204 | |
11343788 | 5205 | kid = cLISTOPo->op_first; |
8990e307 | 5206 | if (kid->op_type != OP_NULL) |
463ee0b2 | 5207 | croak("panic: ck_split"); |
8990e307 | 5208 | kid = kid->op_sibling; |
11343788 MB |
5209 | op_free(cLISTOPo->op_first); |
5210 | cLISTOPo->op_first = kid; | |
85e6fe83 | 5211 | if (!kid) { |
11343788 MB |
5212 | cLISTOPo->op_first = kid = newSVOP(OP_CONST, 0, newSVpv(" ", 1)); |
5213 | cLISTOPo->op_last = kid; /* There was only one element previously */ | |
85e6fe83 | 5214 | } |
79072805 LW |
5215 | |
5216 | if (kid->op_type != OP_MATCH) { | |
5217 | OP *sibl = kid->op_sibling; | |
463ee0b2 | 5218 | kid->op_sibling = 0; |
79072805 | 5219 | kid = pmruntime( newPMOP(OP_MATCH, OPf_SPECIAL), kid, Nullop); |
11343788 MB |
5220 | if (cLISTOPo->op_first == cLISTOPo->op_last) |
5221 | cLISTOPo->op_last = kid; | |
5222 | cLISTOPo->op_first = kid; | |
79072805 LW |
5223 | kid->op_sibling = sibl; |
5224 | } | |
5225 | ||
5226 | kid->op_type = OP_PUSHRE; | |
22c35a8c | 5227 | kid->op_ppaddr = PL_ppaddr[OP_PUSHRE]; |
79072805 LW |
5228 | scalar(kid); |
5229 | ||
5230 | if (!kid->op_sibling) | |
54b9620d | 5231 | append_elem(OP_SPLIT, o, newDEFSVOP()); |
79072805 LW |
5232 | |
5233 | kid = kid->op_sibling; | |
5234 | scalar(kid); | |
5235 | ||
5236 | if (!kid->op_sibling) | |
11343788 | 5237 | append_elem(OP_SPLIT, o, newSVOP(OP_CONST, 0, newSViv(0))); |
79072805 LW |
5238 | |
5239 | kid = kid->op_sibling; | |
5240 | scalar(kid); | |
5241 | ||
5242 | if (kid->op_sibling) | |
22c35a8c | 5243 | return too_many_arguments(o,PL_op_desc[o->op_type]); |
79072805 | 5244 | |
11343788 | 5245 | return o; |
79072805 LW |
5246 | } |
5247 | ||
5248 | OP * | |
8ac85365 | 5249 | ck_subr(OP *o) |
79072805 | 5250 | { |
11343788 MB |
5251 | dTHR; |
5252 | OP *prev = ((cUNOPo->op_first->op_sibling) | |
5253 | ? cUNOPo : ((UNOP*)cUNOPo->op_first))->op_first; | |
5254 | OP *o2 = prev->op_sibling; | |
4633a7c4 LW |
5255 | OP *cvop; |
5256 | char *proto = 0; | |
5257 | CV *cv = 0; | |
46fc3d4c | 5258 | GV *namegv = 0; |
4633a7c4 LW |
5259 | int optional = 0; |
5260 | I32 arg = 0; | |
2d8e6c8d | 5261 | STRLEN n_a; |
4633a7c4 | 5262 | |
11343788 | 5263 | for (cvop = o2; cvop->op_sibling; cvop = cvop->op_sibling) ; |
4633a7c4 LW |
5264 | if (cvop->op_type == OP_RV2CV) { |
5265 | SVOP* tmpop; | |
11343788 | 5266 | o->op_private |= (cvop->op_private & OPpENTERSUB_AMPER); |
4633a7c4 LW |
5267 | null(cvop); /* disable rv2cv */ |
5268 | tmpop = (SVOP*)((UNOP*)cvop)->op_first; | |
5269 | if (tmpop->op_type == OP_GV) { | |
8ebc5c01 | 5270 | cv = GvCVu(tmpop->op_sv); |
5dc0d613 | 5271 | if (cv && SvPOK(cv) && !(o->op_private & OPpENTERSUB_AMPER)) { |
46fc3d4c | 5272 | namegv = CvANON(cv) ? (GV*)tmpop->op_sv : CvGV(cv); |
2d8e6c8d | 5273 | proto = SvPV((SV*)cv, n_a); |
46fc3d4c | 5274 | } |
4633a7c4 LW |
5275 | } |
5276 | } | |
3280af22 NIS |
5277 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
5278 | if (PERLDB_SUB && PL_curstash != PL_debstash) | |
11343788 MB |
5279 | o->op_private |= OPpENTERSUB_DB; |
5280 | while (o2 != cvop) { | |
4633a7c4 LW |
5281 | if (proto) { |
5282 | switch (*proto) { | |
5283 | case '\0': | |
5dc0d613 | 5284 | return too_many_arguments(o, gv_ename(namegv)); |
4633a7c4 LW |
5285 | case ';': |
5286 | optional = 1; | |
5287 | proto++; | |
5288 | continue; | |
5289 | case '$': | |
5290 | proto++; | |
5291 | arg++; | |
11343788 | 5292 | scalar(o2); |
4633a7c4 LW |
5293 | break; |
5294 | case '%': | |
5295 | case '@': | |
11343788 | 5296 | list(o2); |
4633a7c4 LW |
5297 | arg++; |
5298 | break; | |
5299 | case '&': | |
5300 | proto++; | |
5301 | arg++; | |
11343788 | 5302 | if (o2->op_type != OP_REFGEN && o2->op_type != OP_UNDEF) |
5dc0d613 | 5303 | bad_type(arg, "block", gv_ename(namegv), o2); |
4633a7c4 LW |
5304 | break; |
5305 | case '*': | |
5306 | proto++; | |
5307 | arg++; | |
11343788 | 5308 | if (o2->op_type == OP_RV2GV) |
4633a7c4 LW |
5309 | goto wrapref; |
5310 | { | |
11343788 | 5311 | OP* kid = o2; |
69dcf70c | 5312 | OP* sib = kid->op_sibling; |
4633a7c4 | 5313 | kid->op_sibling = 0; |
69dcf70c MB |
5314 | o2 = newUNOP(OP_RV2GV, 0, kid); |
5315 | o2->op_sibling = sib; | |
6fa846a0 | 5316 | prev->op_sibling = o2; |
4633a7c4 LW |
5317 | } |
5318 | goto wrapref; | |
5319 | case '\\': | |
5320 | proto++; | |
5321 | arg++; | |
5322 | switch (*proto++) { | |
5323 | case '*': | |
11343788 | 5324 | if (o2->op_type != OP_RV2GV) |
5dc0d613 | 5325 | bad_type(arg, "symbol", gv_ename(namegv), o2); |
4633a7c4 LW |
5326 | goto wrapref; |
5327 | case '&': | |
11343788 | 5328 | if (o2->op_type != OP_RV2CV) |
5dc0d613 | 5329 | bad_type(arg, "sub", gv_ename(namegv), o2); |
4633a7c4 LW |
5330 | goto wrapref; |
5331 | case '$': | |
386acf99 GS |
5332 | if (o2->op_type != OP_RV2SV |
5333 | && o2->op_type != OP_PADSV | |
5334 | && o2->op_type != OP_THREADSV) | |
5335 | { | |
5dc0d613 | 5336 | bad_type(arg, "scalar", gv_ename(namegv), o2); |
386acf99 | 5337 | } |
4633a7c4 LW |
5338 | goto wrapref; |
5339 | case '@': | |
11343788 | 5340 | if (o2->op_type != OP_RV2AV && o2->op_type != OP_PADAV) |
5dc0d613 | 5341 | bad_type(arg, "array", gv_ename(namegv), o2); |
4633a7c4 LW |
5342 | goto wrapref; |
5343 | case '%': | |
11343788 | 5344 | if (o2->op_type != OP_RV2HV && o2->op_type != OP_PADHV) |
5dc0d613 | 5345 | bad_type(arg, "hash", gv_ename(namegv), o2); |
4633a7c4 LW |
5346 | wrapref: |
5347 | { | |
11343788 | 5348 | OP* kid = o2; |
6fa846a0 | 5349 | OP* sib = kid->op_sibling; |
4633a7c4 | 5350 | kid->op_sibling = 0; |
6fa846a0 GS |
5351 | o2 = newUNOP(OP_REFGEN, 0, kid); |
5352 | o2->op_sibling = sib; | |
e858de61 | 5353 | prev->op_sibling = o2; |
4633a7c4 LW |
5354 | } |
5355 | break; | |
5356 | default: goto oops; | |
5357 | } | |
5358 | break; | |
b1cb66bf | 5359 | case ' ': |
5360 | proto++; | |
5361 | continue; | |
4633a7c4 LW |
5362 | default: |
5363 | oops: | |
5364 | croak("Malformed prototype for %s: %s", | |
2d8e6c8d | 5365 | gv_ename(namegv), SvPV((SV*)cv, n_a)); |
4633a7c4 LW |
5366 | } |
5367 | } | |
5368 | else | |
11343788 MB |
5369 | list(o2); |
5370 | mod(o2, OP_ENTERSUB); | |
5371 | prev = o2; | |
5372 | o2 = o2->op_sibling; | |
4633a7c4 | 5373 | } |
fb73857a | 5374 | if (proto && !optional && |
5375 | (*proto && *proto != '@' && *proto != '%' && *proto != ';')) | |
5dc0d613 | 5376 | return too_few_arguments(o, gv_ename(namegv)); |
11343788 | 5377 | return o; |
79072805 LW |
5378 | } |
5379 | ||
5380 | OP * | |
8ac85365 | 5381 | ck_svconst(OP *o) |
8990e307 | 5382 | { |
11343788 MB |
5383 | SvREADONLY_on(cSVOPo->op_sv); |
5384 | return o; | |
8990e307 LW |
5385 | } |
5386 | ||
5387 | OP * | |
8ac85365 | 5388 | ck_trunc(OP *o) |
79072805 | 5389 | { |
11343788 MB |
5390 | if (o->op_flags & OPf_KIDS) { |
5391 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 | 5392 | |
a0d0e21e LW |
5393 | if (kid->op_type == OP_NULL) |
5394 | kid = (SVOP*)kid->op_sibling; | |
5395 | if (kid && | |
5396 | kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) | |
11343788 | 5397 | o->op_flags |= OPf_SPECIAL; |
79072805 | 5398 | } |
11343788 | 5399 | return ck_fun(o); |
79072805 LW |
5400 | } |
5401 | ||
463ee0b2 LW |
5402 | /* A peephole optimizer. We visit the ops in the order they're to execute. */ |
5403 | ||
79072805 | 5404 | void |
8ac85365 | 5405 | peep(register OP *o) |
79072805 | 5406 | { |
11343788 | 5407 | dTHR; |
79072805 | 5408 | register OP* oldop = 0; |
2d8e6c8d GS |
5409 | STRLEN n_a; |
5410 | ||
a0d0e21e | 5411 | if (!o || o->op_seq) |
79072805 | 5412 | return; |
a0d0e21e | 5413 | ENTER; |
462e5cf6 | 5414 | SAVEOP(); |
3280af22 | 5415 | SAVESPTR(PL_curcop); |
a0d0e21e LW |
5416 | for (; o; o = o->op_next) { |
5417 | if (o->op_seq) | |
5418 | break; | |
3280af22 NIS |
5419 | if (!PL_op_seqmax) |
5420 | PL_op_seqmax++; | |
533c011a | 5421 | PL_op = o; |
a0d0e21e LW |
5422 | switch (o->op_type) { |
5423 | case OP_NEXTSTATE: | |
5424 | case OP_DBSTATE: | |
3280af22 NIS |
5425 | PL_curcop = ((COP*)o); /* for warnings */ |
5426 | o->op_seq = PL_op_seqmax++; | |
a0d0e21e LW |
5427 | break; |
5428 | ||
5429 | case OP_CONCAT: | |
5430 | case OP_CONST: | |
5431 | case OP_JOIN: | |
5432 | case OP_UC: | |
5433 | case OP_UCFIRST: | |
5434 | case OP_LC: | |
5435 | case OP_LCFIRST: | |
5436 | case OP_QUOTEMETA: | |
3c4f770c | 5437 | if (o->op_next && o->op_next->op_type == OP_STRINGIFY) |
a0d0e21e | 5438 | null(o->op_next); |
3280af22 | 5439 | o->op_seq = PL_op_seqmax++; |
a0d0e21e | 5440 | break; |
8990e307 | 5441 | case OP_STUB: |
54310121 | 5442 | if ((o->op_flags & OPf_WANT) != OPf_WANT_LIST) { |
3280af22 | 5443 | o->op_seq = PL_op_seqmax++; |
54310121 | 5444 | break; /* Scalar stub must produce undef. List stub is noop */ |
8990e307 | 5445 | } |
748a9306 | 5446 | goto nothin; |
79072805 | 5447 | case OP_NULL: |
748a9306 | 5448 | if (o->op_targ == OP_NEXTSTATE || o->op_targ == OP_DBSTATE) |
3280af22 | 5449 | PL_curcop = ((COP*)o); |
748a9306 | 5450 | goto nothin; |
79072805 | 5451 | case OP_SCALAR: |
93a17b20 | 5452 | case OP_LINESEQ: |
463ee0b2 | 5453 | case OP_SCOPE: |
748a9306 | 5454 | nothin: |
a0d0e21e LW |
5455 | if (oldop && o->op_next) { |
5456 | oldop->op_next = o->op_next; | |
79072805 LW |
5457 | continue; |
5458 | } | |
3280af22 | 5459 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
5460 | break; |
5461 | ||
5462 | case OP_GV: | |
a0d0e21e | 5463 | if (o->op_next->op_type == OP_RV2SV) { |
5f05dabc | 5464 | if (!(o->op_next->op_private & OPpDEREF)) { |
a0d0e21e LW |
5465 | null(o->op_next); |
5466 | o->op_private |= o->op_next->op_private & OPpLVAL_INTRO; | |
5467 | o->op_next = o->op_next->op_next; | |
5468 | o->op_type = OP_GVSV; | |
22c35a8c | 5469 | o->op_ppaddr = PL_ppaddr[OP_GVSV]; |
8990e307 LW |
5470 | } |
5471 | } | |
a0d0e21e LW |
5472 | else if (o->op_next->op_type == OP_RV2AV) { |
5473 | OP* pop = o->op_next->op_next; | |
5474 | IV i; | |
8990e307 | 5475 | if (pop->op_type == OP_CONST && |
533c011a | 5476 | (PL_op = pop->op_next) && |
8990e307 | 5477 | pop->op_next->op_type == OP_AELEM && |
a0d0e21e | 5478 | !(pop->op_next->op_private & |
68dc0745 | 5479 | (OPpLVAL_INTRO|OPpLVAL_DEFER|OPpDEREF)) && |
3280af22 | 5480 | (i = SvIV(((SVOP*)pop)->op_sv) - PL_compiling.cop_arybase) |
a0d0e21e | 5481 | <= 255 && |
8990e307 LW |
5482 | i >= 0) |
5483 | { | |
748a9306 | 5484 | SvREFCNT_dec(((SVOP*)pop)->op_sv); |
a0d0e21e | 5485 | null(o->op_next); |
8990e307 LW |
5486 | null(pop->op_next); |
5487 | null(pop); | |
a0d0e21e LW |
5488 | o->op_flags |= pop->op_next->op_flags & OPf_MOD; |
5489 | o->op_next = pop->op_next->op_next; | |
5490 | o->op_type = OP_AELEMFAST; | |
22c35a8c | 5491 | o->op_ppaddr = PL_ppaddr[OP_AELEMFAST]; |
a0d0e21e | 5492 | o->op_private = (U8)i; |
a6006777 | 5493 | GvAVn(((GVOP*)o)->op_gv); |
8990e307 | 5494 | } |
79072805 | 5495 | } |
3280af22 | 5496 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
5497 | break; |
5498 | ||
a0d0e21e | 5499 | case OP_MAPWHILE: |
79072805 LW |
5500 | case OP_GREPWHILE: |
5501 | case OP_AND: | |
5502 | case OP_OR: | |
3280af22 | 5503 | o->op_seq = PL_op_seqmax++; |
fd4d1407 IZ |
5504 | while (cLOGOP->op_other->op_type == OP_NULL) |
5505 | cLOGOP->op_other = cLOGOP->op_other->op_next; | |
79072805 LW |
5506 | peep(cLOGOP->op_other); |
5507 | break; | |
5508 | ||
5509 | case OP_COND_EXPR: | |
3280af22 | 5510 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
5511 | peep(cCONDOP->op_true); |
5512 | peep(cCONDOP->op_false); | |
5513 | break; | |
5514 | ||
5515 | case OP_ENTERLOOP: | |
3280af22 | 5516 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
5517 | peep(cLOOP->op_redoop); |
5518 | peep(cLOOP->op_nextop); | |
5519 | peep(cLOOP->op_lastop); | |
5520 | break; | |
5521 | ||
8782bef2 | 5522 | case OP_QR: |
79072805 LW |
5523 | case OP_MATCH: |
5524 | case OP_SUBST: | |
3280af22 | 5525 | o->op_seq = PL_op_seqmax++; |
a0d0e21e | 5526 | peep(cPMOP->op_pmreplstart); |
79072805 LW |
5527 | break; |
5528 | ||
a0d0e21e | 5529 | case OP_EXEC: |
3280af22 | 5530 | o->op_seq = PL_op_seqmax++; |
599cee73 PM |
5531 | if (ckWARN(WARN_SYNTAX) && o->op_next |
5532 | && o->op_next->op_type == OP_NEXTSTATE) { | |
a0d0e21e | 5533 | if (o->op_next->op_sibling && |
20408e3c GS |
5534 | o->op_next->op_sibling->op_type != OP_EXIT && |
5535 | o->op_next->op_sibling->op_type != OP_WARN && | |
a0d0e21e | 5536 | o->op_next->op_sibling->op_type != OP_DIE) { |
3280af22 | 5537 | line_t oldline = PL_curcop->cop_line; |
a0d0e21e | 5538 | |
3280af22 | 5539 | PL_curcop->cop_line = ((COP*)o->op_next)->cop_line; |
599cee73 PM |
5540 | warner(WARN_SYNTAX, "Statement unlikely to be reached"); |
5541 | warner(WARN_SYNTAX, "(Maybe you meant system() when you said exec()?)\n"); | |
3280af22 | 5542 | PL_curcop->cop_line = oldline; |
a0d0e21e LW |
5543 | } |
5544 | } | |
5545 | break; | |
aeea060c | 5546 | |
c750a3ec MB |
5547 | case OP_HELEM: { |
5548 | UNOP *rop; | |
5549 | SV *lexname; | |
5550 | GV **fields; | |
5551 | SV **svp, **indsvp; | |
5552 | I32 ind; | |
5553 | char *key; | |
5554 | STRLEN keylen; | |
aeea060c | 5555 | |
c750a3ec MB |
5556 | if (o->op_private & (OPpDEREF_HV|OPpDEREF_AV|OPpLVAL_INTRO) |
5557 | || ((BINOP*)o)->op_last->op_type != OP_CONST) | |
5558 | break; | |
5559 | rop = (UNOP*)((BINOP*)o)->op_first; | |
5560 | if (rop->op_type != OP_RV2HV || rop->op_first->op_type != OP_PADSV) | |
5561 | break; | |
3280af22 | 5562 | lexname = *av_fetch(PL_comppad_name, rop->op_first->op_targ, TRUE); |
c750a3ec MB |
5563 | if (!SvOBJECT(lexname)) |
5564 | break; | |
5196be3e | 5565 | fields = (GV**)hv_fetch(SvSTASH(lexname), "FIELDS", 6, FALSE); |
c750a3ec MB |
5566 | if (!fields || !GvHV(*fields)) |
5567 | break; | |
5568 | svp = &((SVOP*)((BINOP*)o)->op_last)->op_sv; | |
5569 | key = SvPV(*svp, keylen); | |
5570 | indsvp = hv_fetch(GvHV(*fields), key, keylen, FALSE); | |
5571 | if (!indsvp) { | |
5572 | croak("No such field \"%s\" in variable %s of type %s", | |
2d8e6c8d | 5573 | key, SvPV(lexname, n_a), HvNAME(SvSTASH(lexname))); |
c750a3ec MB |
5574 | } |
5575 | ind = SvIV(*indsvp); | |
5576 | if (ind < 1) | |
5577 | croak("Bad index while coercing array into hash"); | |
5578 | rop->op_type = OP_RV2AV; | |
22c35a8c | 5579 | rop->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
c750a3ec | 5580 | o->op_type = OP_AELEM; |
22c35a8c | 5581 | o->op_ppaddr = PL_ppaddr[OP_AELEM]; |
c750a3ec MB |
5582 | SvREFCNT_dec(*svp); |
5583 | *svp = newSViv(ind); | |
5584 | break; | |
5585 | } | |
5586 | ||
79072805 | 5587 | default: |
3280af22 | 5588 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
5589 | break; |
5590 | } | |
a0d0e21e | 5591 | oldop = o; |
79072805 | 5592 | } |
a0d0e21e | 5593 | LEAVE; |
79072805 | 5594 | } |