Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* op.c |
79072805 | 2 | * |
4eb8286e | 3 | * Copyright (c) 1991-1999, 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, |
2680586e | 51 | CV* startcv, I32 cx_ix, I32 saweval, U32 flags)); |
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])) { |
2b92dfce GS |
132 | /* 1999-02-27 mjd@plover.com */ |
133 | char *p; | |
134 | p = strchr(name, '\0'); | |
135 | /* The next block assumes the buffer is at least 205 chars | |
136 | long. At present, it's always at least 256 chars. */ | |
137 | if (p-name > 200) { | |
138 | strcpy(name+200, "..."); | |
139 | p = name+199; | |
140 | } | |
141 | else { | |
142 | p[1] = '\0'; | |
143 | } | |
144 | /* Move everything else down one character */ | |
145 | for (; p-name > 2; p--) | |
146 | *p = *(p-1); | |
46fc3d4c | 147 | name[2] = toCTRL(name[1]); |
148 | name[1] = '^'; | |
149 | } | |
dce40276 | 150 | yyerror(form("Can't use global %s in \"my\"",name)); |
a0d0e21e | 151 | } |
599cee73 | 152 | if (ckWARN(WARN_UNSAFE) && AvFILLp(PL_comppad_name) >= 0) { |
3280af22 NIS |
153 | SV **svp = AvARRAY(PL_comppad_name); |
154 | for (off = AvFILLp(PL_comppad_name); off > PL_comppad_name_floor; off--) { | |
b1cb66bf | 155 | if ((sv = svp[off]) |
3280af22 | 156 | && sv != &PL_sv_undef |
c53d7c7d | 157 | && (SvIVX(sv) == PAD_MAX || SvIVX(sv) == 0) |
b1cb66bf | 158 | && strEQ(name, SvPVX(sv))) |
159 | { | |
599cee73 | 160 | warner(WARN_UNSAFE, |
9fbbe825 | 161 | "\"my\" variable %s masks earlier declaration in same %s", |
c53d7c7d | 162 | name, (SvIVX(sv) == PAD_MAX ? "scope" : "statement")); |
b1cb66bf | 163 | break; |
164 | } | |
165 | } | |
166 | } | |
a0d0e21e LW |
167 | off = pad_alloc(OP_PADSV, SVs_PADMY); |
168 | sv = NEWSV(1102,0); | |
93a17b20 LW |
169 | sv_upgrade(sv, SVt_PVNV); |
170 | sv_setpv(sv, name); | |
3280af22 | 171 | if (PL_in_my_stash) { |
c750a3ec | 172 | if (*name != '$') |
dce40276 GS |
173 | yyerror(form("Can't declare class for non-scalar %s in \"my\"", |
174 | name)); | |
c750a3ec MB |
175 | SvOBJECT_on(sv); |
176 | (void)SvUPGRADE(sv, SVt_PVMG); | |
3280af22 NIS |
177 | SvSTASH(sv) = (HV*)SvREFCNT_inc(PL_in_my_stash); |
178 | PL_sv_objcount++; | |
c750a3ec | 179 | } |
3280af22 | 180 | av_store(PL_comppad_name, off, sv); |
c53d7c7d | 181 | SvNVX(sv) = (double)PAD_MAX; |
8990e307 | 182 | SvIVX(sv) = 0; /* Not yet introduced--see newSTATEOP */ |
3280af22 NIS |
183 | if (!PL_min_intro_pending) |
184 | PL_min_intro_pending = off; | |
185 | PL_max_intro_pending = off; | |
93a17b20 | 186 | if (*name == '@') |
3280af22 | 187 | av_store(PL_comppad, off, (SV*)newAV()); |
93a17b20 | 188 | else if (*name == '%') |
3280af22 NIS |
189 | av_store(PL_comppad, off, (SV*)newHV()); |
190 | SvPADMY_on(PL_curpad[off]); | |
93a17b20 LW |
191 | return off; |
192 | } | |
193 | ||
2680586e GS |
194 | #define FINDLEX_NOSEARCH 1 /* don't search outer contexts */ |
195 | ||
76e3520e | 196 | STATIC PADOFFSET |
2680586e GS |
197 | pad_findlex(char *name, PADOFFSET newoff, U32 seq, CV* startcv, I32 cx_ix, I32 saweval, |
198 | U32 flags) | |
93a17b20 | 199 | { |
11343788 | 200 | dTHR; |
748a9306 | 201 | CV *cv; |
93a17b20 LW |
202 | I32 off; |
203 | SV *sv; | |
93a17b20 | 204 | register I32 i; |
c09156bb | 205 | register PERL_CONTEXT *cx; |
93a17b20 | 206 | |
748a9306 | 207 | for (cv = startcv; cv; cv = CvOUTSIDE(cv)) { |
4fdae800 | 208 | AV *curlist = CvPADLIST(cv); |
209 | SV **svp = av_fetch(curlist, 0, FALSE); | |
748a9306 | 210 | AV *curname; |
4fdae800 | 211 | |
3280af22 | 212 | if (!svp || *svp == &PL_sv_undef) |
4633a7c4 | 213 | continue; |
748a9306 LW |
214 | curname = (AV*)*svp; |
215 | svp = AvARRAY(curname); | |
93965878 | 216 | for (off = AvFILLp(curname); off > 0; off--) { |
748a9306 | 217 | if ((sv = svp[off]) && |
3280af22 | 218 | sv != &PL_sv_undef && |
748a9306 | 219 | seq <= SvIVX(sv) && |
13826f2c | 220 | seq > I_32(SvNVX(sv)) && |
748a9306 LW |
221 | strEQ(SvPVX(sv), name)) |
222 | { | |
5f05dabc | 223 | I32 depth; |
224 | AV *oldpad; | |
225 | SV *oldsv; | |
226 | ||
227 | depth = CvDEPTH(cv); | |
228 | if (!depth) { | |
9607fc9c | 229 | if (newoff) { |
230 | if (SvFAKE(sv)) | |
231 | continue; | |
4fdae800 | 232 | return 0; /* don't clone from inactive stack frame */ |
9607fc9c | 233 | } |
5f05dabc | 234 | depth = 1; |
235 | } | |
236 | oldpad = (AV*)*av_fetch(curlist, depth, FALSE); | |
237 | oldsv = *av_fetch(oldpad, off, TRUE); | |
748a9306 | 238 | if (!newoff) { /* Not a mere clone operation. */ |
9607fc9c | 239 | SV *namesv = NEWSV(1103,0); |
748a9306 | 240 | newoff = pad_alloc(OP_PADSV, SVs_PADMY); |
9607fc9c | 241 | sv_upgrade(namesv, SVt_PVNV); |
242 | sv_setpv(namesv, name); | |
3280af22 NIS |
243 | av_store(PL_comppad_name, newoff, namesv); |
244 | SvNVX(namesv) = (double)PL_curcop->cop_seq; | |
c53d7c7d | 245 | SvIVX(namesv) = PAD_MAX; /* A ref, intro immediately */ |
9607fc9c | 246 | SvFAKE_on(namesv); /* A ref, not a real var */ |
87671ffc | 247 | if (SvOBJECT(sv)) { /* A typed var */ |
3d93dc8b GS |
248 | SvOBJECT_on(namesv); |
249 | (void)SvUPGRADE(namesv, SVt_PVMG); | |
87671ffc | 250 | SvSTASH(namesv) = (HV*)SvREFCNT_inc((SV*)SvSTASH(sv)); |
3d93dc8b GS |
251 | PL_sv_objcount++; |
252 | } | |
3280af22 | 253 | if (CvANON(PL_compcv) || SvTYPE(PL_compcv) == SVt_PVFM) { |
28757baa | 254 | /* "It's closures all the way down." */ |
3280af22 | 255 | CvCLONE_on(PL_compcv); |
54310121 | 256 | if (cv == startcv) { |
3280af22 | 257 | if (CvANON(PL_compcv)) |
54310121 | 258 | oldsv = Nullsv; /* no need to keep ref */ |
259 | } | |
260 | else { | |
28757baa | 261 | CV *bcv; |
262 | for (bcv = startcv; | |
263 | bcv && bcv != cv && !CvCLONE(bcv); | |
6b35e009 GS |
264 | bcv = CvOUTSIDE(bcv)) |
265 | { | |
28757baa | 266 | if (CvANON(bcv)) |
267 | CvCLONE_on(bcv); | |
268 | else { | |
6b35e009 GS |
269 | if (ckWARN(WARN_CLOSURE) |
270 | && !CvUNIQUE(bcv) && !CvUNIQUE(cv)) | |
271 | { | |
599cee73 | 272 | warner(WARN_CLOSURE, |
44a8e56a | 273 | "Variable \"%s\" may be unavailable", |
28757baa | 274 | name); |
6b35e009 | 275 | } |
28757baa | 276 | break; |
277 | } | |
278 | } | |
279 | } | |
280 | } | |
3280af22 | 281 | else if (!CvUNIQUE(PL_compcv)) { |
599cee73 PM |
282 | if (ckWARN(WARN_CLOSURE) && !SvFAKE(sv) && !CvUNIQUE(cv)) |
283 | warner(WARN_CLOSURE, | |
284 | "Variable \"%s\" will not stay shared", name); | |
5f05dabc | 285 | } |
748a9306 | 286 | } |
3280af22 | 287 | av_store(PL_comppad, newoff, SvREFCNT_inc(oldsv)); |
748a9306 LW |
288 | return newoff; |
289 | } | |
93a17b20 LW |
290 | } |
291 | } | |
292 | ||
2680586e GS |
293 | if (flags & FINDLEX_NOSEARCH) |
294 | return 0; | |
295 | ||
93a17b20 LW |
296 | /* Nothing in current lexical context--try eval's context, if any. |
297 | * This is necessary to let the perldb get at lexically scoped variables. | |
298 | * XXX This will also probably interact badly with eval tree caching. | |
299 | */ | |
300 | ||
748a9306 | 301 | for (i = cx_ix; i >= 0; i--) { |
93a17b20 | 302 | cx = &cxstack[i]; |
6b35e009 | 303 | switch (CxTYPE(cx)) { |
93a17b20 | 304 | default: |
748a9306 LW |
305 | if (i == 0 && saweval) { |
306 | seq = cxstack[saweval].blk_oldcop->cop_seq; | |
2680586e | 307 | return pad_findlex(name, newoff, seq, PL_main_cv, -1, saweval, 0); |
748a9306 | 308 | } |
93a17b20 LW |
309 | break; |
310 | case CXt_EVAL: | |
44a8e56a | 311 | switch (cx->blk_eval.old_op_type) { |
312 | case OP_ENTEREVAL: | |
6b35e009 GS |
313 | if (CxREALEVAL(cx)) |
314 | saweval = i; | |
44a8e56a | 315 | break; |
316 | case OP_REQUIRE: | |
317 | /* require must have its own scope */ | |
318 | return 0; | |
319 | } | |
93a17b20 LW |
320 | break; |
321 | case CXt_SUB: | |
322 | if (!saweval) | |
323 | return 0; | |
324 | cv = cx->blk_sub.cv; | |
3280af22 | 325 | if (PL_debstash && CvSTASH(cv) == PL_debstash) { /* ignore DB'* scope */ |
748a9306 | 326 | saweval = i; /* so we know where we were called from */ |
93a17b20 | 327 | continue; |
93a17b20 | 328 | } |
748a9306 | 329 | seq = cxstack[saweval].blk_oldcop->cop_seq; |
2680586e | 330 | return pad_findlex(name, newoff, seq, cv, i-1, saweval,FINDLEX_NOSEARCH); |
93a17b20 LW |
331 | } |
332 | } | |
333 | ||
748a9306 LW |
334 | return 0; |
335 | } | |
a0d0e21e | 336 | |
748a9306 | 337 | PADOFFSET |
8ac85365 | 338 | pad_findmy(char *name) |
748a9306 | 339 | { |
11343788 | 340 | dTHR; |
748a9306 | 341 | I32 off; |
54310121 | 342 | I32 pendoff = 0; |
748a9306 | 343 | SV *sv; |
3280af22 NIS |
344 | SV **svp = AvARRAY(PL_comppad_name); |
345 | U32 seq = PL_cop_seqmax; | |
6b35e009 | 346 | PERL_CONTEXT *cx; |
33b8ce05 | 347 | CV *outside; |
748a9306 | 348 | |
11343788 MB |
349 | #ifdef USE_THREADS |
350 | /* | |
351 | * Special case to get lexical (and hence per-thread) @_. | |
352 | * XXX I need to find out how to tell at parse-time whether use | |
353 | * of @_ should refer to a lexical (from a sub) or defgv (global | |
354 | * scope and maybe weird sub-ish things like formats). See | |
355 | * startsub in perly.y. It's possible that @_ could be lexical | |
356 | * (at least from subs) even in non-threaded perl. | |
357 | */ | |
358 | if (strEQ(name, "@_")) | |
359 | return 0; /* success. (NOT_IN_PAD indicates failure) */ | |
360 | #endif /* USE_THREADS */ | |
361 | ||
748a9306 | 362 | /* The one we're looking for is probably just before comppad_name_fill. */ |
3280af22 | 363 | for (off = AvFILLp(PL_comppad_name); off > 0; off--) { |
a0d0e21e | 364 | if ((sv = svp[off]) && |
3280af22 | 365 | sv != &PL_sv_undef && |
54310121 | 366 | (!SvIVX(sv) || |
367 | (seq <= SvIVX(sv) && | |
368 | seq > I_32(SvNVX(sv)))) && | |
a0d0e21e LW |
369 | strEQ(SvPVX(sv), name)) |
370 | { | |
54310121 | 371 | if (SvIVX(sv)) |
372 | return (PADOFFSET)off; | |
373 | pendoff = off; /* this pending def. will override import */ | |
a0d0e21e LW |
374 | } |
375 | } | |
748a9306 | 376 | |
33b8ce05 GS |
377 | outside = CvOUTSIDE(PL_compcv); |
378 | ||
379 | /* Check if if we're compiling an eval'', and adjust seq to be the | |
380 | * eval's seq number. This depends on eval'' having a non-null | |
381 | * CvOUTSIDE() while it is being compiled. The eval'' itself is | |
1aff0e91 GS |
382 | * identified by CvEVAL being true and CvGV being null. */ |
383 | if (outside && CvEVAL(PL_compcv) && !CvGV(PL_compcv) && cxstack_ix >= 0) { | |
6b35e009 GS |
384 | cx = &cxstack[cxstack_ix]; |
385 | if (CxREALEVAL(cx)) | |
386 | seq = cx->blk_oldcop->cop_seq; | |
387 | } | |
388 | ||
748a9306 | 389 | /* See if it's in a nested scope */ |
2680586e | 390 | off = pad_findlex(name, 0, seq, outside, cxstack_ix, 0, 0); |
54310121 | 391 | if (off) { |
392 | /* If there is a pending local definition, this new alias must die */ | |
393 | if (pendoff) | |
3280af22 | 394 | SvIVX(AvARRAY(PL_comppad_name)[off]) = seq; |
11343788 | 395 | return off; /* pad_findlex returns 0 for failure...*/ |
54310121 | 396 | } |
11343788 | 397 | return NOT_IN_PAD; /* ...but we return NOT_IN_PAD for failure */ |
93a17b20 LW |
398 | } |
399 | ||
400 | void | |
8ac85365 | 401 | pad_leavemy(I32 fill) |
93a17b20 LW |
402 | { |
403 | I32 off; | |
3280af22 | 404 | SV **svp = AvARRAY(PL_comppad_name); |
93a17b20 | 405 | SV *sv; |
3280af22 NIS |
406 | if (PL_min_intro_pending && fill < PL_min_intro_pending) { |
407 | for (off = PL_max_intro_pending; off >= PL_min_intro_pending; off--) { | |
408 | if ((sv = svp[off]) && sv != &PL_sv_undef) | |
8990e307 LW |
409 | warn("%s never introduced", SvPVX(sv)); |
410 | } | |
411 | } | |
412 | /* "Deintroduce" my variables that are leaving with this scope. */ | |
3280af22 | 413 | for (off = AvFILLp(PL_comppad_name); off > fill; off--) { |
c53d7c7d | 414 | if ((sv = svp[off]) && sv != &PL_sv_undef && SvIVX(sv) == PAD_MAX) |
3280af22 | 415 | SvIVX(sv) = PL_cop_seqmax; |
93a17b20 LW |
416 | } |
417 | } | |
418 | ||
419 | PADOFFSET | |
8ac85365 | 420 | pad_alloc(I32 optype, U32 tmptype) |
79072805 | 421 | { |
11343788 | 422 | dTHR; |
79072805 LW |
423 | SV *sv; |
424 | I32 retval; | |
425 | ||
3280af22 | 426 | if (AvARRAY(PL_comppad) != PL_curpad) |
463ee0b2 | 427 | croak("panic: pad_alloc"); |
3280af22 | 428 | if (PL_pad_reset_pending) |
a0d0e21e | 429 | pad_reset(); |
ed6116ce | 430 | if (tmptype & SVs_PADMY) { |
79072805 | 431 | do { |
3280af22 | 432 | sv = *av_fetch(PL_comppad, AvFILLp(PL_comppad) + 1, TRUE); |
ed6116ce | 433 | } while (SvPADBUSY(sv)); /* need a fresh one */ |
3280af22 | 434 | retval = AvFILLp(PL_comppad); |
79072805 LW |
435 | } |
436 | else { | |
3280af22 NIS |
437 | SV **names = AvARRAY(PL_comppad_name); |
438 | SSize_t names_fill = AvFILLp(PL_comppad_name); | |
bbce6d69 | 439 | for (;;) { |
440 | /* | |
441 | * "foreach" index vars temporarily become aliases to non-"my" | |
442 | * values. Thus we must skip, not just pad values that are | |
443 | * marked as current pad values, but also those with names. | |
444 | */ | |
3280af22 NIS |
445 | if (++PL_padix <= names_fill && |
446 | (sv = names[PL_padix]) && sv != &PL_sv_undef) | |
bbce6d69 | 447 | continue; |
3280af22 | 448 | sv = *av_fetch(PL_comppad, PL_padix, TRUE); |
bbce6d69 | 449 | if (!(SvFLAGS(sv) & (SVs_PADTMP|SVs_PADMY))) |
450 | break; | |
451 | } | |
3280af22 | 452 | retval = PL_padix; |
79072805 | 453 | } |
8990e307 | 454 | SvFLAGS(sv) |= tmptype; |
3280af22 | 455 | PL_curpad = AvARRAY(PL_comppad); |
11343788 | 456 | #ifdef USE_THREADS |
5dc0d613 | 457 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx alloc %ld for %s\n", |
533c011a | 458 | (unsigned long) thr, (unsigned long) PL_curpad, |
22c35a8c | 459 | (long) retval, PL_op_name[optype])); |
11343788 | 460 | #else |
d9bb4600 | 461 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx alloc %ld for %s\n", |
3280af22 | 462 | (unsigned long) PL_curpad, |
22c35a8c | 463 | (long) retval, PL_op_name[optype])); |
11343788 | 464 | #endif /* USE_THREADS */ |
79072805 LW |
465 | return (PADOFFSET)retval; |
466 | } | |
467 | ||
468 | SV * | |
8990e307 | 469 | pad_sv(PADOFFSET po) |
79072805 | 470 | { |
11343788 MB |
471 | dTHR; |
472 | #ifdef USE_THREADS | |
5dc0d613 | 473 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx sv %d\n", |
533c011a | 474 | (unsigned long) thr, (unsigned long) PL_curpad, po)); |
11343788 | 475 | #else |
79072805 | 476 | if (!po) |
463ee0b2 | 477 | croak("panic: pad_sv po"); |
d9bb4600 | 478 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx sv %d\n", |
3280af22 | 479 | (unsigned long) PL_curpad, po)); |
11343788 | 480 | #endif /* USE_THREADS */ |
3280af22 | 481 | return PL_curpad[po]; /* eventually we'll turn this into a macro */ |
79072805 LW |
482 | } |
483 | ||
484 | void | |
8990e307 | 485 | pad_free(PADOFFSET po) |
79072805 | 486 | { |
11343788 | 487 | dTHR; |
3280af22 | 488 | if (!PL_curpad) |
a0d0e21e | 489 | return; |
3280af22 | 490 | if (AvARRAY(PL_comppad) != PL_curpad) |
463ee0b2 | 491 | croak("panic: pad_free curpad"); |
79072805 | 492 | if (!po) |
463ee0b2 | 493 | croak("panic: pad_free po"); |
11343788 | 494 | #ifdef USE_THREADS |
5dc0d613 | 495 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx free %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 free %d\n", |
3280af22 | 499 | (unsigned long) PL_curpad, po)); |
11343788 | 500 | #endif /* USE_THREADS */ |
3280af22 NIS |
501 | if (PL_curpad[po] && PL_curpad[po] != &PL_sv_undef) |
502 | SvPADTMP_off(PL_curpad[po]); | |
503 | if ((I32)po < PL_padix) | |
504 | PL_padix = po - 1; | |
79072805 LW |
505 | } |
506 | ||
507 | void | |
8990e307 | 508 | pad_swipe(PADOFFSET po) |
79072805 | 509 | { |
11343788 | 510 | dTHR; |
3280af22 | 511 | if (AvARRAY(PL_comppad) != PL_curpad) |
463ee0b2 | 512 | croak("panic: pad_swipe curpad"); |
79072805 | 513 | if (!po) |
463ee0b2 | 514 | croak("panic: pad_swipe po"); |
11343788 | 515 | #ifdef USE_THREADS |
5dc0d613 | 516 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx swipe %d\n", |
533c011a | 517 | (unsigned long) thr, (unsigned long) PL_curpad, po)); |
11343788 | 518 | #else |
d9bb4600 | 519 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx swipe %d\n", |
3280af22 | 520 | (unsigned long) PL_curpad, po)); |
11343788 | 521 | #endif /* USE_THREADS */ |
3280af22 NIS |
522 | SvPADTMP_off(PL_curpad[po]); |
523 | PL_curpad[po] = NEWSV(1107,0); | |
524 | SvPADTMP_on(PL_curpad[po]); | |
525 | if ((I32)po < PL_padix) | |
526 | PL_padix = po - 1; | |
79072805 LW |
527 | } |
528 | ||
d9bb4600 GS |
529 | /* XXX pad_reset() is currently disabled because it results in serious bugs. |
530 | * It causes pad temp TARGs to be shared between OPs. Since TARGs are pushed | |
531 | * on the stack by OPs that use them, there are several ways to get an alias | |
532 | * to a shared TARG. Such an alias will change randomly and unpredictably. | |
533 | * We avoid doing this until we can think of a Better Way. | |
534 | * GSAR 97-10-29 */ | |
79072805 | 535 | void |
8ac85365 | 536 | pad_reset(void) |
79072805 | 537 | { |
d9bb4600 | 538 | #ifdef USE_BROKEN_PAD_RESET |
11343788 | 539 | dTHR; |
79072805 LW |
540 | register I32 po; |
541 | ||
6b88bc9c | 542 | if (AvARRAY(PL_comppad) != PL_curpad) |
463ee0b2 | 543 | croak("panic: pad_reset curpad"); |
11343788 | 544 | #ifdef USE_THREADS |
5dc0d613 | 545 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx reset\n", |
6b88bc9c | 546 | (unsigned long) thr, (unsigned long) PL_curpad)); |
11343788 | 547 | #else |
d9bb4600 | 548 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx reset\n", |
6b88bc9c | 549 | (unsigned long) PL_curpad)); |
11343788 | 550 | #endif /* USE_THREADS */ |
6b88bc9c GS |
551 | if (!PL_tainting) { /* Can't mix tainted and non-tainted temporaries. */ |
552 | for (po = AvMAX(PL_comppad); po > PL_padix_floor; po--) { | |
553 | if (PL_curpad[po] && !SvIMMORTAL(PL_curpad[po])) | |
554 | SvPADTMP_off(PL_curpad[po]); | |
748a9306 | 555 | } |
6b88bc9c | 556 | PL_padix = PL_padix_floor; |
79072805 | 557 | } |
d9bb4600 | 558 | #endif |
3280af22 | 559 | PL_pad_reset_pending = FALSE; |
79072805 LW |
560 | } |
561 | ||
a863c7d1 | 562 | #ifdef USE_THREADS |
54b9620d | 563 | /* find_threadsv is not reentrant */ |
a863c7d1 | 564 | PADOFFSET |
08105a92 | 565 | find_threadsv(const char *name) |
a863c7d1 MB |
566 | { |
567 | dTHR; | |
568 | char *p; | |
569 | PADOFFSET key; | |
554b3eca | 570 | SV **svp; |
54b9620d | 571 | /* We currently only handle names of a single character */ |
533c011a | 572 | p = strchr(PL_threadsv_names, *name); |
a863c7d1 MB |
573 | if (!p) |
574 | return NOT_IN_PAD; | |
533c011a | 575 | key = p - PL_threadsv_names; |
2d8e6c8d | 576 | MUTEX_LOCK(&thr->mutex); |
54b9620d | 577 | svp = av_fetch(thr->threadsv, key, FALSE); |
2d8e6c8d GS |
578 | if (svp) |
579 | MUTEX_UNLOCK(&thr->mutex); | |
580 | else { | |
554b3eca | 581 | SV *sv = NEWSV(0, 0); |
54b9620d | 582 | av_store(thr->threadsv, key, sv); |
940cb80d | 583 | thr->threadsvp = AvARRAY(thr->threadsv); |
2d8e6c8d | 584 | MUTEX_UNLOCK(&thr->mutex); |
554b3eca MB |
585 | /* |
586 | * Some magic variables used to be automagically initialised | |
587 | * in gv_fetchpv. Those which are now per-thread magicals get | |
588 | * initialised here instead. | |
589 | */ | |
590 | switch (*name) { | |
54b9620d MB |
591 | case '_': |
592 | break; | |
554b3eca MB |
593 | case ';': |
594 | sv_setpv(sv, "\034"); | |
54b9620d | 595 | sv_magic(sv, 0, 0, name, 1); |
554b3eca | 596 | break; |
c277df42 IZ |
597 | case '&': |
598 | case '`': | |
599 | case '\'': | |
533c011a | 600 | PL_sawampersand = TRUE; |
a3f914c5 GS |
601 | /* FALL THROUGH */ |
602 | case '1': | |
603 | case '2': | |
604 | case '3': | |
605 | case '4': | |
606 | case '5': | |
607 | case '6': | |
608 | case '7': | |
609 | case '8': | |
610 | case '9': | |
c277df42 | 611 | SvREADONLY_on(sv); |
d8b5173a | 612 | /* FALL THROUGH */ |
067391ea GS |
613 | |
614 | /* XXX %! tied to Errno.pm needs to be added here. | |
615 | * See gv_fetchpv(). */ | |
616 | /* case '!': */ | |
617 | ||
54b9620d MB |
618 | default: |
619 | sv_magic(sv, 0, 0, name, 1); | |
554b3eca | 620 | } |
8b73bbec | 621 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), |
54b9620d | 622 | "find_threadsv: new SV %p for $%s%c\n", |
554b3eca MB |
623 | sv, (*name < 32) ? "^" : "", |
624 | (*name < 32) ? toCTRL(*name) : *name)); | |
a863c7d1 MB |
625 | } |
626 | return key; | |
627 | } | |
628 | #endif /* USE_THREADS */ | |
629 | ||
79072805 LW |
630 | /* Destructor */ |
631 | ||
632 | void | |
8ac85365 | 633 | op_free(OP *o) |
79072805 | 634 | { |
85e6fe83 | 635 | register OP *kid, *nextkid; |
79072805 | 636 | |
5dc0d613 | 637 | if (!o || o->op_seq == (U16)-1) |
79072805 LW |
638 | return; |
639 | ||
11343788 MB |
640 | if (o->op_flags & OPf_KIDS) { |
641 | for (kid = cUNOPo->op_first; kid; kid = nextkid) { | |
85e6fe83 | 642 | nextkid = kid->op_sibling; /* Get before next freeing kid */ |
79072805 | 643 | op_free(kid); |
85e6fe83 | 644 | } |
79072805 LW |
645 | } |
646 | ||
11343788 | 647 | switch (o->op_type) { |
8990e307 | 648 | case OP_NULL: |
11343788 | 649 | o->op_targ = 0; /* Was holding old type, if any. */ |
8990e307 | 650 | break; |
a0d0e21e | 651 | case OP_ENTEREVAL: |
11343788 | 652 | o->op_targ = 0; /* Was holding hints. */ |
a0d0e21e | 653 | break; |
554b3eca | 654 | #ifdef USE_THREADS |
8dd3ba40 SM |
655 | case OP_ENTERITER: |
656 | if (!(o->op_flags & OPf_SPECIAL)) | |
657 | break; | |
658 | /* FALL THROUGH */ | |
2faa37cc | 659 | case OP_THREADSV: |
54b9620d | 660 | o->op_targ = 0; /* Was holding index into thr->threadsv AV. */ |
554b3eca MB |
661 | break; |
662 | #endif /* USE_THREADS */ | |
a6006777 | 663 | default: |
ac4c12e7 | 664 | if (!(o->op_flags & OPf_REF) |
22c35a8c | 665 | || (PL_check[o->op_type] != FUNC_NAME_TO_PTR(ck_ftst))) |
a6006777 | 666 | break; |
667 | /* FALL THROUGH */ | |
463ee0b2 | 668 | case OP_GVSV: |
79072805 | 669 | case OP_GV: |
a6006777 | 670 | case OP_AELEMFAST: |
11343788 | 671 | SvREFCNT_dec(cGVOPo->op_gv); |
8990e307 LW |
672 | break; |
673 | case OP_NEXTSTATE: | |
674 | case OP_DBSTATE: | |
5196be3e | 675 | Safefree(cCOPo->cop_label); |
11343788 | 676 | SvREFCNT_dec(cCOPo->cop_filegv); |
599cee73 PM |
677 | if (cCOPo->cop_warnings != WARN_NONE && cCOPo->cop_warnings != WARN_ALL) |
678 | SvREFCNT_dec(cCOPo->cop_warnings); | |
79072805 LW |
679 | break; |
680 | case OP_CONST: | |
11343788 | 681 | SvREFCNT_dec(cSVOPo->op_sv); |
79072805 | 682 | break; |
748a9306 LW |
683 | case OP_GOTO: |
684 | case OP_NEXT: | |
685 | case OP_LAST: | |
686 | case OP_REDO: | |
11343788 | 687 | if (o->op_flags & (OPf_SPECIAL|OPf_STACKED|OPf_KIDS)) |
748a9306 LW |
688 | break; |
689 | /* FALL THROUGH */ | |
a0d0e21e | 690 | case OP_TRANS: |
a0ed51b3 LW |
691 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) |
692 | SvREFCNT_dec(cSVOPo->op_sv); | |
693 | else | |
694 | Safefree(cPVOPo->op_pv); | |
a0d0e21e LW |
695 | break; |
696 | case OP_SUBST: | |
11343788 | 697 | op_free(cPMOPo->op_pmreplroot); |
a0d0e21e | 698 | /* FALL THROUGH */ |
748a9306 | 699 | case OP_PUSHRE: |
a0d0e21e | 700 | case OP_MATCH: |
8782bef2 | 701 | case OP_QR: |
c277df42 | 702 | ReREFCNT_dec(cPMOPo->op_pmregexp); |
a0d0e21e | 703 | break; |
79072805 LW |
704 | } |
705 | ||
11343788 MB |
706 | if (o->op_targ > 0) |
707 | pad_free(o->op_targ); | |
8990e307 | 708 | |
11343788 | 709 | Safefree(o); |
79072805 LW |
710 | } |
711 | ||
76e3520e | 712 | STATIC void |
8ac85365 | 713 | null(OP *o) |
8990e307 | 714 | { |
54b9620d | 715 | if (o->op_type != OP_NULL && o->op_type != OP_THREADSV && o->op_targ > 0) |
11343788 MB |
716 | pad_free(o->op_targ); |
717 | o->op_targ = o->op_type; | |
718 | o->op_type = OP_NULL; | |
22c35a8c | 719 | o->op_ppaddr = PL_ppaddr[OP_NULL]; |
8990e307 LW |
720 | } |
721 | ||
79072805 LW |
722 | /* Contextualizers */ |
723 | ||
463ee0b2 | 724 | #define LINKLIST(o) ((o)->op_next ? (o)->op_next : linklist((OP*)o)) |
79072805 LW |
725 | |
726 | OP * | |
8ac85365 | 727 | linklist(OP *o) |
79072805 LW |
728 | { |
729 | register OP *kid; | |
730 | ||
11343788 MB |
731 | if (o->op_next) |
732 | return o->op_next; | |
79072805 LW |
733 | |
734 | /* establish postfix order */ | |
11343788 MB |
735 | if (cUNOPo->op_first) { |
736 | o->op_next = LINKLIST(cUNOPo->op_first); | |
737 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) { | |
79072805 LW |
738 | if (kid->op_sibling) |
739 | kid->op_next = LINKLIST(kid->op_sibling); | |
740 | else | |
11343788 | 741 | kid->op_next = o; |
79072805 LW |
742 | } |
743 | } | |
744 | else | |
11343788 | 745 | o->op_next = o; |
79072805 | 746 | |
11343788 | 747 | return o->op_next; |
79072805 LW |
748 | } |
749 | ||
750 | OP * | |
8ac85365 | 751 | scalarkids(OP *o) |
79072805 LW |
752 | { |
753 | OP *kid; | |
11343788 MB |
754 | if (o && o->op_flags & OPf_KIDS) { |
755 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
79072805 LW |
756 | scalar(kid); |
757 | } | |
11343788 | 758 | return o; |
79072805 LW |
759 | } |
760 | ||
76e3520e | 761 | STATIC OP * |
8ac85365 | 762 | scalarboolean(OP *o) |
8990e307 | 763 | { |
d008e5eb | 764 | if (o->op_type == OP_SASSIGN && cBINOPo->op_first->op_type == OP_CONST) { |
0f15f207 | 765 | dTHR; |
d008e5eb GS |
766 | if (ckWARN(WARN_SYNTAX)) { |
767 | line_t oldline = PL_curcop->cop_line; | |
a0d0e21e | 768 | |
d008e5eb GS |
769 | if (PL_copline != NOLINE) |
770 | PL_curcop->cop_line = PL_copline; | |
771 | warner(WARN_SYNTAX, "Found = in conditional, should be =="); | |
772 | PL_curcop->cop_line = oldline; | |
773 | } | |
a0d0e21e | 774 | } |
11343788 | 775 | return scalar(o); |
8990e307 LW |
776 | } |
777 | ||
778 | OP * | |
8ac85365 | 779 | scalar(OP *o) |
79072805 LW |
780 | { |
781 | OP *kid; | |
782 | ||
a0d0e21e | 783 | /* assumes no premature commitment */ |
3280af22 | 784 | if (!o || (o->op_flags & OPf_WANT) || PL_error_count |
5dc0d613 | 785 | || o->op_type == OP_RETURN) |
11343788 | 786 | return o; |
79072805 | 787 | |
5dc0d613 | 788 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_SCALAR; |
79072805 | 789 | |
11343788 | 790 | switch (o->op_type) { |
79072805 | 791 | case OP_REPEAT: |
11343788 MB |
792 | if (o->op_private & OPpREPEAT_DOLIST) |
793 | null(((LISTOP*)cBINOPo->op_first)->op_first); | |
794 | scalar(cBINOPo->op_first); | |
8990e307 | 795 | break; |
79072805 LW |
796 | case OP_OR: |
797 | case OP_AND: | |
798 | case OP_COND_EXPR: | |
11343788 | 799 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
8990e307 | 800 | scalar(kid); |
79072805 | 801 | break; |
a0d0e21e | 802 | case OP_SPLIT: |
11343788 | 803 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e LW |
804 | if (!kPMOP->op_pmreplroot) |
805 | deprecate("implicit split to @_"); | |
806 | } | |
807 | /* FALL THROUGH */ | |
79072805 | 808 | case OP_MATCH: |
8782bef2 | 809 | case OP_QR: |
79072805 LW |
810 | case OP_SUBST: |
811 | case OP_NULL: | |
8990e307 | 812 | default: |
11343788 MB |
813 | if (o->op_flags & OPf_KIDS) { |
814 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) | |
8990e307 LW |
815 | scalar(kid); |
816 | } | |
79072805 LW |
817 | break; |
818 | case OP_LEAVE: | |
819 | case OP_LEAVETRY: | |
5dc0d613 | 820 | kid = cLISTOPo->op_first; |
54310121 | 821 | scalar(kid); |
822 | while (kid = kid->op_sibling) { | |
823 | if (kid->op_sibling) | |
824 | scalarvoid(kid); | |
825 | else | |
826 | scalar(kid); | |
827 | } | |
3280af22 | 828 | WITH_THR(PL_curcop = &PL_compiling); |
54310121 | 829 | break; |
748a9306 | 830 | case OP_SCOPE: |
79072805 | 831 | case OP_LINESEQ: |
8990e307 | 832 | case OP_LIST: |
11343788 | 833 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
834 | if (kid->op_sibling) |
835 | scalarvoid(kid); | |
836 | else | |
837 | scalar(kid); | |
838 | } | |
3280af22 | 839 | WITH_THR(PL_curcop = &PL_compiling); |
79072805 LW |
840 | break; |
841 | } | |
11343788 | 842 | return o; |
79072805 LW |
843 | } |
844 | ||
845 | OP * | |
8ac85365 | 846 | scalarvoid(OP *o) |
79072805 LW |
847 | { |
848 | OP *kid; | |
8990e307 LW |
849 | char* useless = 0; |
850 | SV* sv; | |
79072805 | 851 | |
54310121 | 852 | /* assumes no premature commitment */ |
68c73484 JH |
853 | U8 want = o->op_flags & OPf_WANT; |
854 | if (!o || (want && want != OPf_WANT_SCALAR) || PL_error_count | |
5dc0d613 | 855 | || o->op_type == OP_RETURN) |
11343788 | 856 | return o; |
79072805 | 857 | |
5dc0d613 | 858 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_VOID; |
79072805 | 859 | |
11343788 | 860 | switch (o->op_type) { |
79072805 | 861 | default: |
22c35a8c | 862 | if (!(PL_opargs[o->op_type] & OA_FOLDCONST)) |
8990e307 | 863 | break; |
36477c24 | 864 | /* FALL THROUGH */ |
865 | case OP_REPEAT: | |
11343788 | 866 | if (o->op_flags & OPf_STACKED) |
8990e307 | 867 | break; |
5d82c453 GA |
868 | goto func_ops; |
869 | case OP_SUBSTR: | |
870 | if (o->op_private == 4) | |
871 | break; | |
8990e307 LW |
872 | /* FALL THROUGH */ |
873 | case OP_GVSV: | |
874 | case OP_WANTARRAY: | |
875 | case OP_GV: | |
876 | case OP_PADSV: | |
877 | case OP_PADAV: | |
878 | case OP_PADHV: | |
879 | case OP_PADANY: | |
880 | case OP_AV2ARYLEN: | |
8990e307 | 881 | case OP_REF: |
a0d0e21e LW |
882 | case OP_REFGEN: |
883 | case OP_SREFGEN: | |
8990e307 LW |
884 | case OP_DEFINED: |
885 | case OP_HEX: | |
886 | case OP_OCT: | |
887 | case OP_LENGTH: | |
8990e307 LW |
888 | case OP_VEC: |
889 | case OP_INDEX: | |
890 | case OP_RINDEX: | |
891 | case OP_SPRINTF: | |
892 | case OP_AELEM: | |
893 | case OP_AELEMFAST: | |
894 | case OP_ASLICE: | |
8990e307 LW |
895 | case OP_HELEM: |
896 | case OP_HSLICE: | |
897 | case OP_UNPACK: | |
898 | case OP_PACK: | |
8990e307 LW |
899 | case OP_JOIN: |
900 | case OP_LSLICE: | |
901 | case OP_ANONLIST: | |
902 | case OP_ANONHASH: | |
903 | case OP_SORT: | |
904 | case OP_REVERSE: | |
905 | case OP_RANGE: | |
906 | case OP_FLIP: | |
907 | case OP_FLOP: | |
908 | case OP_CALLER: | |
909 | case OP_FILENO: | |
910 | case OP_EOF: | |
911 | case OP_TELL: | |
912 | case OP_GETSOCKNAME: | |
913 | case OP_GETPEERNAME: | |
914 | case OP_READLINK: | |
915 | case OP_TELLDIR: | |
916 | case OP_GETPPID: | |
917 | case OP_GETPGRP: | |
918 | case OP_GETPRIORITY: | |
919 | case OP_TIME: | |
920 | case OP_TMS: | |
921 | case OP_LOCALTIME: | |
922 | case OP_GMTIME: | |
923 | case OP_GHBYNAME: | |
924 | case OP_GHBYADDR: | |
925 | case OP_GHOSTENT: | |
926 | case OP_GNBYNAME: | |
927 | case OP_GNBYADDR: | |
928 | case OP_GNETENT: | |
929 | case OP_GPBYNAME: | |
930 | case OP_GPBYNUMBER: | |
931 | case OP_GPROTOENT: | |
932 | case OP_GSBYNAME: | |
933 | case OP_GSBYPORT: | |
934 | case OP_GSERVENT: | |
935 | case OP_GPWNAM: | |
936 | case OP_GPWUID: | |
937 | case OP_GGRNAM: | |
938 | case OP_GGRGID: | |
939 | case OP_GETLOGIN: | |
5d82c453 | 940 | func_ops: |
11343788 | 941 | if (!(o->op_private & OPpLVAL_INTRO)) |
22c35a8c | 942 | useless = PL_op_desc[o->op_type]; |
8990e307 LW |
943 | break; |
944 | ||
945 | case OP_RV2GV: | |
946 | case OP_RV2SV: | |
947 | case OP_RV2AV: | |
948 | case OP_RV2HV: | |
11343788 MB |
949 | if (!(o->op_private & OPpLVAL_INTRO) && |
950 | (!o->op_sibling || o->op_sibling->op_type != OP_READLINE)) | |
8990e307 LW |
951 | useless = "a variable"; |
952 | break; | |
79072805 | 953 | |
93a17b20 | 954 | case OP_NEXTSTATE: |
8990e307 | 955 | case OP_DBSTATE: |
3280af22 | 956 | WITH_THR(PL_curcop = ((COP*)o)); /* for warning below */ |
93a17b20 LW |
957 | break; |
958 | ||
79072805 | 959 | case OP_CONST: |
11343788 | 960 | sv = cSVOPo->op_sv; |
d008e5eb GS |
961 | { |
962 | dTHR; | |
963 | if (ckWARN(WARN_VOID)) { | |
964 | useless = "a constant"; | |
965 | if (SvNIOK(sv) && (SvNV(sv) == 0.0 || SvNV(sv) == 1.0)) | |
966 | useless = 0; | |
967 | else if (SvPOK(sv)) { | |
968 | if (strnEQ(SvPVX(sv), "di", 2) || | |
969 | strnEQ(SvPVX(sv), "ds", 2) || | |
970 | strnEQ(SvPVX(sv), "ig", 2)) | |
971 | useless = 0; | |
972 | } | |
8990e307 LW |
973 | } |
974 | } | |
11343788 | 975 | null(o); /* don't execute a constant */ |
8990e307 | 976 | SvREFCNT_dec(sv); /* don't even remember it */ |
79072805 LW |
977 | break; |
978 | ||
979 | case OP_POSTINC: | |
11343788 | 980 | o->op_type = OP_PREINC; /* pre-increment is faster */ |
22c35a8c | 981 | o->op_ppaddr = PL_ppaddr[OP_PREINC]; |
79072805 LW |
982 | break; |
983 | ||
984 | case OP_POSTDEC: | |
11343788 | 985 | o->op_type = OP_PREDEC; /* pre-decrement is faster */ |
22c35a8c | 986 | o->op_ppaddr = PL_ppaddr[OP_PREDEC]; |
79072805 LW |
987 | break; |
988 | ||
79072805 LW |
989 | case OP_OR: |
990 | case OP_AND: | |
991 | case OP_COND_EXPR: | |
11343788 | 992 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
993 | scalarvoid(kid); |
994 | break; | |
5aabfad6 | 995 | |
a0d0e21e | 996 | case OP_NULL: |
11343788 | 997 | if (o->op_targ == OP_NEXTSTATE || o->op_targ == OP_DBSTATE) |
3280af22 | 998 | WITH_THR(PL_curcop = ((COP*)o)); /* for warning below */ |
11343788 | 999 | if (o->op_flags & OPf_STACKED) |
a0d0e21e | 1000 | break; |
5aabfad6 | 1001 | /* FALL THROUGH */ |
79072805 LW |
1002 | case OP_ENTERTRY: |
1003 | case OP_ENTER: | |
1004 | case OP_SCALAR: | |
11343788 | 1005 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1006 | break; |
54310121 | 1007 | /* FALL THROUGH */ |
463ee0b2 | 1008 | case OP_SCOPE: |
79072805 LW |
1009 | case OP_LEAVE: |
1010 | case OP_LEAVETRY: | |
a0d0e21e | 1011 | case OP_LEAVELOOP: |
79072805 | 1012 | case OP_LINESEQ: |
79072805 | 1013 | case OP_LIST: |
11343788 | 1014 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
1015 | scalarvoid(kid); |
1016 | break; | |
c90c0ff4 | 1017 | case OP_ENTEREVAL: |
5196be3e | 1018 | scalarkids(o); |
c90c0ff4 | 1019 | break; |
5aabfad6 | 1020 | case OP_REQUIRE: |
c90c0ff4 | 1021 | /* all requires must return a boolean value */ |
5196be3e MB |
1022 | o->op_flags &= ~OPf_WANT; |
1023 | return scalar(o); | |
a0d0e21e | 1024 | case OP_SPLIT: |
11343788 | 1025 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e LW |
1026 | if (!kPMOP->op_pmreplroot) |
1027 | deprecate("implicit split to @_"); | |
1028 | } | |
1029 | break; | |
79072805 | 1030 | } |
d008e5eb GS |
1031 | if (useless) { |
1032 | dTHR; | |
1033 | if (ckWARN(WARN_VOID)) | |
1034 | warner(WARN_VOID, "Useless use of %s in void context", useless); | |
1035 | } | |
11343788 | 1036 | return o; |
79072805 LW |
1037 | } |
1038 | ||
1039 | OP * | |
8ac85365 | 1040 | listkids(OP *o) |
79072805 LW |
1041 | { |
1042 | OP *kid; | |
11343788 MB |
1043 | if (o && o->op_flags & OPf_KIDS) { |
1044 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
79072805 LW |
1045 | list(kid); |
1046 | } | |
11343788 | 1047 | return o; |
79072805 LW |
1048 | } |
1049 | ||
1050 | OP * | |
8ac85365 | 1051 | list(OP *o) |
79072805 LW |
1052 | { |
1053 | OP *kid; | |
1054 | ||
a0d0e21e | 1055 | /* assumes no premature commitment */ |
3280af22 | 1056 | if (!o || (o->op_flags & OPf_WANT) || PL_error_count |
5dc0d613 | 1057 | || o->op_type == OP_RETURN) |
11343788 | 1058 | return o; |
79072805 | 1059 | |
5dc0d613 | 1060 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_LIST; |
79072805 | 1061 | |
11343788 | 1062 | switch (o->op_type) { |
79072805 LW |
1063 | case OP_FLOP: |
1064 | case OP_REPEAT: | |
11343788 | 1065 | list(cBINOPo->op_first); |
79072805 LW |
1066 | break; |
1067 | case OP_OR: | |
1068 | case OP_AND: | |
1069 | case OP_COND_EXPR: | |
11343788 | 1070 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
1071 | list(kid); |
1072 | break; | |
1073 | default: | |
1074 | case OP_MATCH: | |
8782bef2 | 1075 | case OP_QR: |
79072805 LW |
1076 | case OP_SUBST: |
1077 | case OP_NULL: | |
11343788 | 1078 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1079 | break; |
11343788 MB |
1080 | if (!o->op_next && cUNOPo->op_first->op_type == OP_FLOP) { |
1081 | list(cBINOPo->op_first); | |
1082 | return gen_constant_list(o); | |
79072805 LW |
1083 | } |
1084 | case OP_LIST: | |
11343788 | 1085 | listkids(o); |
79072805 LW |
1086 | break; |
1087 | case OP_LEAVE: | |
1088 | case OP_LEAVETRY: | |
5dc0d613 | 1089 | kid = cLISTOPo->op_first; |
54310121 | 1090 | list(kid); |
1091 | while (kid = kid->op_sibling) { | |
1092 | if (kid->op_sibling) | |
1093 | scalarvoid(kid); | |
1094 | else | |
1095 | list(kid); | |
1096 | } | |
3280af22 | 1097 | WITH_THR(PL_curcop = &PL_compiling); |
54310121 | 1098 | break; |
748a9306 | 1099 | case OP_SCOPE: |
79072805 | 1100 | case OP_LINESEQ: |
11343788 | 1101 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
1102 | if (kid->op_sibling) |
1103 | scalarvoid(kid); | |
1104 | else | |
1105 | list(kid); | |
1106 | } | |
3280af22 | 1107 | WITH_THR(PL_curcop = &PL_compiling); |
79072805 | 1108 | break; |
c90c0ff4 | 1109 | case OP_REQUIRE: |
1110 | /* all requires must return a boolean value */ | |
5196be3e MB |
1111 | o->op_flags &= ~OPf_WANT; |
1112 | return scalar(o); | |
79072805 | 1113 | } |
11343788 | 1114 | return o; |
79072805 LW |
1115 | } |
1116 | ||
1117 | OP * | |
8ac85365 | 1118 | scalarseq(OP *o) |
79072805 LW |
1119 | { |
1120 | OP *kid; | |
1121 | ||
11343788 MB |
1122 | if (o) { |
1123 | if (o->op_type == OP_LINESEQ || | |
1124 | o->op_type == OP_SCOPE || | |
1125 | o->op_type == OP_LEAVE || | |
1126 | o->op_type == OP_LEAVETRY) | |
463ee0b2 | 1127 | { |
0f15f207 | 1128 | dTHR; |
11343788 | 1129 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
ed6116ce | 1130 | if (kid->op_sibling) { |
463ee0b2 | 1131 | scalarvoid(kid); |
ed6116ce | 1132 | } |
463ee0b2 | 1133 | } |
3280af22 | 1134 | PL_curcop = &PL_compiling; |
79072805 | 1135 | } |
11343788 | 1136 | o->op_flags &= ~OPf_PARENS; |
3280af22 | 1137 | if (PL_hints & HINT_BLOCK_SCOPE) |
11343788 | 1138 | o->op_flags |= OPf_PARENS; |
79072805 | 1139 | } |
8990e307 | 1140 | else |
11343788 MB |
1141 | o = newOP(OP_STUB, 0); |
1142 | return o; | |
79072805 LW |
1143 | } |
1144 | ||
76e3520e | 1145 | STATIC OP * |
8ac85365 | 1146 | modkids(OP *o, I32 type) |
79072805 LW |
1147 | { |
1148 | OP *kid; | |
11343788 MB |
1149 | if (o && o->op_flags & OPf_KIDS) { |
1150 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
463ee0b2 | 1151 | mod(kid, type); |
79072805 | 1152 | } |
11343788 | 1153 | return o; |
79072805 LW |
1154 | } |
1155 | ||
79072805 | 1156 | OP * |
8ac85365 | 1157 | mod(OP *o, I32 type) |
79072805 | 1158 | { |
11343788 | 1159 | dTHR; |
79072805 LW |
1160 | OP *kid; |
1161 | SV *sv; | |
2d8e6c8d | 1162 | STRLEN n_a; |
79072805 | 1163 | |
3280af22 | 1164 | if (!o || PL_error_count) |
11343788 | 1165 | return o; |
79072805 | 1166 | |
11343788 | 1167 | switch (o->op_type) { |
68dc0745 | 1168 | case OP_UNDEF: |
3280af22 | 1169 | PL_modcount++; |
5dc0d613 | 1170 | return o; |
a0d0e21e | 1171 | case OP_CONST: |
11343788 | 1172 | if (!(o->op_private & (OPpCONST_ARYBASE))) |
a0d0e21e | 1173 | goto nomod; |
3280af22 NIS |
1174 | if (PL_eval_start && PL_eval_start->op_type == OP_CONST) { |
1175 | PL_compiling.cop_arybase = (I32)SvIV(((SVOP*)PL_eval_start)->op_sv); | |
1176 | PL_eval_start = 0; | |
a0d0e21e LW |
1177 | } |
1178 | else if (!type) { | |
3280af22 NIS |
1179 | SAVEI32(PL_compiling.cop_arybase); |
1180 | PL_compiling.cop_arybase = 0; | |
a0d0e21e LW |
1181 | } |
1182 | else if (type == OP_REFGEN) | |
1183 | goto nomod; | |
1184 | else | |
1185 | croak("That use of $[ is unsupported"); | |
1186 | break; | |
5f05dabc | 1187 | case OP_STUB: |
5196be3e | 1188 | if (o->op_flags & OPf_PARENS) |
5f05dabc | 1189 | break; |
1190 | goto nomod; | |
a0d0e21e LW |
1191 | case OP_ENTERSUB: |
1192 | if ((type == OP_UNDEF || type == OP_REFGEN) && | |
11343788 MB |
1193 | !(o->op_flags & OPf_STACKED)) { |
1194 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
22c35a8c | 1195 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 MB |
1196 | assert(cUNOPo->op_first->op_type == OP_NULL); |
1197 | null(((LISTOP*)cUNOPo->op_first)->op_first);/* disable pushmark */ | |
79072805 LW |
1198 | break; |
1199 | } | |
1200 | /* FALL THROUGH */ | |
1201 | default: | |
a0d0e21e LW |
1202 | nomod: |
1203 | /* grep, foreach, subcalls, refgen */ | |
1204 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) | |
1205 | break; | |
46fc3d4c | 1206 | yyerror(form("Can't modify %s in %s", |
638bc118 | 1207 | (o->op_type == OP_NULL && (o->op_flags & OPf_SPECIAL) |
22c35a8c GS |
1208 | ? "do block" : PL_op_desc[o->op_type]), |
1209 | type ? PL_op_desc[type] : "local")); | |
11343788 | 1210 | return o; |
79072805 | 1211 | |
a0d0e21e LW |
1212 | case OP_PREINC: |
1213 | case OP_PREDEC: | |
1214 | case OP_POW: | |
1215 | case OP_MULTIPLY: | |
1216 | case OP_DIVIDE: | |
1217 | case OP_MODULO: | |
1218 | case OP_REPEAT: | |
1219 | case OP_ADD: | |
1220 | case OP_SUBTRACT: | |
1221 | case OP_CONCAT: | |
1222 | case OP_LEFT_SHIFT: | |
1223 | case OP_RIGHT_SHIFT: | |
1224 | case OP_BIT_AND: | |
1225 | case OP_BIT_XOR: | |
1226 | case OP_BIT_OR: | |
1227 | case OP_I_MULTIPLY: | |
1228 | case OP_I_DIVIDE: | |
1229 | case OP_I_MODULO: | |
1230 | case OP_I_ADD: | |
1231 | case OP_I_SUBTRACT: | |
11343788 | 1232 | if (!(o->op_flags & OPf_STACKED)) |
a0d0e21e | 1233 | goto nomod; |
3280af22 | 1234 | PL_modcount++; |
a0d0e21e LW |
1235 | break; |
1236 | ||
79072805 | 1237 | case OP_COND_EXPR: |
11343788 | 1238 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 | 1239 | mod(kid, type); |
79072805 LW |
1240 | break; |
1241 | ||
1242 | case OP_RV2AV: | |
1243 | case OP_RV2HV: | |
93af7a87 | 1244 | if (!type && cUNOPo->op_first->op_type != OP_GV) |
706a304b | 1245 | croak("Can't localize through a reference"); |
11343788 | 1246 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) { |
3280af22 | 1247 | PL_modcount = 10000; |
11343788 | 1248 | return o; /* Treat \(@foo) like ordinary list. */ |
748a9306 LW |
1249 | } |
1250 | /* FALL THROUGH */ | |
79072805 | 1251 | case OP_RV2GV: |
5dc0d613 | 1252 | if (scalar_mod_type(o, type)) |
3fe9a6f1 | 1253 | goto nomod; |
11343788 | 1254 | ref(cUNOPo->op_first, o->op_type); |
79072805 LW |
1255 | /* FALL THROUGH */ |
1256 | case OP_AASSIGN: | |
1257 | case OP_ASLICE: | |
1258 | case OP_HSLICE: | |
93a17b20 LW |
1259 | case OP_NEXTSTATE: |
1260 | case OP_DBSTATE: | |
a0d0e21e LW |
1261 | case OP_REFGEN: |
1262 | case OP_CHOMP: | |
3280af22 | 1263 | PL_modcount = 10000; |
79072805 | 1264 | break; |
463ee0b2 | 1265 | case OP_RV2SV: |
11343788 | 1266 | if (!type && cUNOPo->op_first->op_type != OP_GV) |
706a304b | 1267 | croak("Can't localize through a reference"); |
aeea060c | 1268 | ref(cUNOPo->op_first, o->op_type); |
463ee0b2 | 1269 | /* FALL THROUGH */ |
79072805 | 1270 | case OP_GV: |
463ee0b2 | 1271 | case OP_AV2ARYLEN: |
3280af22 | 1272 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 1273 | case OP_SASSIGN: |
bf4b1e52 GS |
1274 | case OP_ANDASSIGN: |
1275 | case OP_ORASSIGN: | |
8990e307 | 1276 | case OP_AELEMFAST: |
3280af22 | 1277 | PL_modcount++; |
8990e307 LW |
1278 | break; |
1279 | ||
748a9306 LW |
1280 | case OP_PADAV: |
1281 | case OP_PADHV: | |
3280af22 | 1282 | PL_modcount = 10000; |
5196be3e MB |
1283 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) |
1284 | return o; /* Treat \(@foo) like ordinary list. */ | |
1285 | if (scalar_mod_type(o, type)) | |
3fe9a6f1 | 1286 | goto nomod; |
748a9306 LW |
1287 | /* FALL THROUGH */ |
1288 | case OP_PADSV: | |
3280af22 | 1289 | PL_modcount++; |
748a9306 LW |
1290 | if (!type) |
1291 | croak("Can't localize lexical variable %s", | |
2d8e6c8d | 1292 | SvPV(*av_fetch(PL_comppad_name, o->op_targ, 4), n_a)); |
463ee0b2 LW |
1293 | break; |
1294 | ||
554b3eca | 1295 | #ifdef USE_THREADS |
2faa37cc | 1296 | case OP_THREADSV: |
533c011a | 1297 | PL_modcount++; /* XXX ??? */ |
554b3eca MB |
1298 | break; |
1299 | #endif /* USE_THREADS */ | |
1300 | ||
748a9306 LW |
1301 | case OP_PUSHMARK: |
1302 | break; | |
a0d0e21e | 1303 | |
69969c6f SB |
1304 | case OP_KEYS: |
1305 | if (type != OP_SASSIGN) | |
1306 | goto nomod; | |
5d82c453 GA |
1307 | goto lvalue_func; |
1308 | case OP_SUBSTR: | |
1309 | if (o->op_private == 4) /* don't allow 4 arg substr as lvalue */ | |
1310 | goto nomod; | |
5f05dabc | 1311 | /* FALL THROUGH */ |
a0d0e21e | 1312 | case OP_POS: |
463ee0b2 | 1313 | case OP_VEC: |
5d82c453 | 1314 | lvalue_func: |
11343788 MB |
1315 | pad_free(o->op_targ); |
1316 | o->op_targ = pad_alloc(o->op_type, SVs_PADMY); | |
5dc0d613 | 1317 | assert(SvTYPE(PAD_SV(o->op_targ)) == SVt_NULL); |
11343788 MB |
1318 | if (o->op_flags & OPf_KIDS) |
1319 | mod(cBINOPo->op_first->op_sibling, type); | |
463ee0b2 | 1320 | break; |
a0d0e21e | 1321 | |
463ee0b2 LW |
1322 | case OP_AELEM: |
1323 | case OP_HELEM: | |
11343788 | 1324 | ref(cBINOPo->op_first, o->op_type); |
68dc0745 | 1325 | if (type == OP_ENTERSUB && |
5dc0d613 MB |
1326 | !(o->op_private & (OPpLVAL_INTRO | OPpDEREF))) |
1327 | o->op_private |= OPpLVAL_DEFER; | |
3280af22 | 1328 | PL_modcount++; |
463ee0b2 LW |
1329 | break; |
1330 | ||
1331 | case OP_SCOPE: | |
1332 | case OP_LEAVE: | |
1333 | case OP_ENTER: | |
11343788 MB |
1334 | if (o->op_flags & OPf_KIDS) |
1335 | mod(cLISTOPo->op_last, type); | |
a0d0e21e LW |
1336 | break; |
1337 | ||
1338 | case OP_NULL: | |
638bc118 GS |
1339 | if (o->op_flags & OPf_SPECIAL) /* do BLOCK */ |
1340 | goto nomod; | |
1341 | else if (!(o->op_flags & OPf_KIDS)) | |
463ee0b2 | 1342 | break; |
11343788 MB |
1343 | if (o->op_targ != OP_LIST) { |
1344 | mod(cBINOPo->op_first, type); | |
a0d0e21e LW |
1345 | break; |
1346 | } | |
1347 | /* FALL THROUGH */ | |
463ee0b2 | 1348 | case OP_LIST: |
11343788 | 1349 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1350 | mod(kid, type); |
1351 | break; | |
1352 | } | |
11343788 | 1353 | o->op_flags |= OPf_MOD; |
a0d0e21e LW |
1354 | |
1355 | if (type == OP_AASSIGN || type == OP_SASSIGN) | |
11343788 | 1356 | o->op_flags |= OPf_SPECIAL|OPf_REF; |
a0d0e21e | 1357 | else if (!type) { |
11343788 MB |
1358 | o->op_private |= OPpLVAL_INTRO; |
1359 | o->op_flags &= ~OPf_SPECIAL; | |
3280af22 | 1360 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 1361 | } |
a0d0e21e | 1362 | else if (type != OP_GREPSTART && type != OP_ENTERSUB) |
11343788 MB |
1363 | o->op_flags |= OPf_REF; |
1364 | return o; | |
463ee0b2 LW |
1365 | } |
1366 | ||
3fe9a6f1 | 1367 | static bool |
8ac85365 | 1368 | scalar_mod_type(OP *o, I32 type) |
3fe9a6f1 | 1369 | { |
1370 | switch (type) { | |
1371 | case OP_SASSIGN: | |
5196be3e | 1372 | if (o->op_type == OP_RV2GV) |
3fe9a6f1 | 1373 | return FALSE; |
1374 | /* FALL THROUGH */ | |
1375 | case OP_PREINC: | |
1376 | case OP_PREDEC: | |
1377 | case OP_POSTINC: | |
1378 | case OP_POSTDEC: | |
1379 | case OP_I_PREINC: | |
1380 | case OP_I_PREDEC: | |
1381 | case OP_I_POSTINC: | |
1382 | case OP_I_POSTDEC: | |
1383 | case OP_POW: | |
1384 | case OP_MULTIPLY: | |
1385 | case OP_DIVIDE: | |
1386 | case OP_MODULO: | |
1387 | case OP_REPEAT: | |
1388 | case OP_ADD: | |
1389 | case OP_SUBTRACT: | |
1390 | case OP_I_MULTIPLY: | |
1391 | case OP_I_DIVIDE: | |
1392 | case OP_I_MODULO: | |
1393 | case OP_I_ADD: | |
1394 | case OP_I_SUBTRACT: | |
1395 | case OP_LEFT_SHIFT: | |
1396 | case OP_RIGHT_SHIFT: | |
1397 | case OP_BIT_AND: | |
1398 | case OP_BIT_XOR: | |
1399 | case OP_BIT_OR: | |
1400 | case OP_CONCAT: | |
1401 | case OP_SUBST: | |
1402 | case OP_TRANS: | |
49e9fbe6 GS |
1403 | case OP_READ: |
1404 | case OP_SYSREAD: | |
1405 | case OP_RECV: | |
bf4b1e52 GS |
1406 | case OP_ANDASSIGN: |
1407 | case OP_ORASSIGN: | |
3fe9a6f1 | 1408 | return TRUE; |
1409 | default: | |
1410 | return FALSE; | |
1411 | } | |
1412 | } | |
1413 | ||
35cd451c GS |
1414 | STATIC bool |
1415 | is_handle_constructor(OP *o, I32 argnum) | |
1416 | { | |
1417 | switch (o->op_type) { | |
1418 | case OP_PIPE_OP: | |
1419 | case OP_SOCKPAIR: | |
1420 | if (argnum == 2) | |
1421 | return TRUE; | |
1422 | /* FALL THROUGH */ | |
1423 | case OP_SYSOPEN: | |
1424 | case OP_OPEN: | |
ded8aa31 | 1425 | case OP_SELECT: /* XXX c.f. SelectSaver.pm */ |
35cd451c GS |
1426 | case OP_SOCKET: |
1427 | case OP_OPEN_DIR: | |
1428 | case OP_ACCEPT: | |
1429 | if (argnum == 1) | |
1430 | return TRUE; | |
1431 | /* FALL THROUGH */ | |
1432 | default: | |
1433 | return FALSE; | |
1434 | } | |
1435 | } | |
1436 | ||
463ee0b2 | 1437 | OP * |
8ac85365 | 1438 | refkids(OP *o, I32 type) |
463ee0b2 LW |
1439 | { |
1440 | OP *kid; | |
11343788 MB |
1441 | if (o && o->op_flags & OPf_KIDS) { |
1442 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
463ee0b2 LW |
1443 | ref(kid, type); |
1444 | } | |
11343788 | 1445 | return o; |
463ee0b2 LW |
1446 | } |
1447 | ||
1448 | OP * | |
8ac85365 | 1449 | ref(OP *o, I32 type) |
463ee0b2 LW |
1450 | { |
1451 | OP *kid; | |
463ee0b2 | 1452 | |
3280af22 | 1453 | if (!o || PL_error_count) |
11343788 | 1454 | return o; |
463ee0b2 | 1455 | |
11343788 | 1456 | switch (o->op_type) { |
a0d0e21e | 1457 | case OP_ENTERSUB: |
e55aaa0e | 1458 | if ((type == OP_DEFINED || type == OP_LOCK) && |
11343788 MB |
1459 | !(o->op_flags & OPf_STACKED)) { |
1460 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
22c35a8c | 1461 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 MB |
1462 | assert(cUNOPo->op_first->op_type == OP_NULL); |
1463 | null(((LISTOP*)cUNOPo->op_first)->op_first); /* disable pushmark */ | |
1464 | o->op_flags |= OPf_SPECIAL; | |
8990e307 LW |
1465 | } |
1466 | break; | |
aeea060c | 1467 | |
463ee0b2 | 1468 | case OP_COND_EXPR: |
11343788 | 1469 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1470 | ref(kid, type); |
1471 | break; | |
8990e307 | 1472 | case OP_RV2SV: |
35cd451c GS |
1473 | if (type == OP_DEFINED) |
1474 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
11343788 | 1475 | ref(cUNOPo->op_first, o->op_type); |
4633a7c4 LW |
1476 | /* FALL THROUGH */ |
1477 | case OP_PADSV: | |
5f05dabc | 1478 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1479 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1480 | : type == OP_RV2HV ? OPpDEREF_HV | |
1481 | : OPpDEREF_SV); | |
11343788 | 1482 | o->op_flags |= OPf_MOD; |
a0d0e21e | 1483 | } |
8990e307 LW |
1484 | break; |
1485 | ||
2faa37cc | 1486 | case OP_THREADSV: |
a863c7d1 MB |
1487 | o->op_flags |= OPf_MOD; /* XXX ??? */ |
1488 | break; | |
1489 | ||
463ee0b2 LW |
1490 | case OP_RV2AV: |
1491 | case OP_RV2HV: | |
aeea060c | 1492 | o->op_flags |= OPf_REF; |
8990e307 | 1493 | /* FALL THROUGH */ |
463ee0b2 | 1494 | case OP_RV2GV: |
35cd451c GS |
1495 | if (type == OP_DEFINED) |
1496 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
11343788 | 1497 | ref(cUNOPo->op_first, o->op_type); |
463ee0b2 | 1498 | break; |
8990e307 | 1499 | |
463ee0b2 LW |
1500 | case OP_PADAV: |
1501 | case OP_PADHV: | |
aeea060c | 1502 | o->op_flags |= OPf_REF; |
79072805 | 1503 | break; |
aeea060c | 1504 | |
8990e307 | 1505 | case OP_SCALAR: |
79072805 | 1506 | case OP_NULL: |
11343788 | 1507 | if (!(o->op_flags & OPf_KIDS)) |
463ee0b2 | 1508 | break; |
11343788 | 1509 | ref(cBINOPo->op_first, type); |
79072805 LW |
1510 | break; |
1511 | case OP_AELEM: | |
1512 | case OP_HELEM: | |
11343788 | 1513 | ref(cBINOPo->op_first, o->op_type); |
5f05dabc | 1514 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1515 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1516 | : type == OP_RV2HV ? OPpDEREF_HV | |
1517 | : OPpDEREF_SV); | |
11343788 | 1518 | o->op_flags |= OPf_MOD; |
8990e307 | 1519 | } |
79072805 LW |
1520 | break; |
1521 | ||
463ee0b2 | 1522 | case OP_SCOPE: |
79072805 LW |
1523 | case OP_LEAVE: |
1524 | case OP_ENTER: | |
8990e307 | 1525 | case OP_LIST: |
11343788 | 1526 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1527 | break; |
11343788 | 1528 | ref(cLISTOPo->op_last, type); |
79072805 | 1529 | break; |
a0d0e21e LW |
1530 | default: |
1531 | break; | |
79072805 | 1532 | } |
11343788 | 1533 | return scalar(o); |
8990e307 | 1534 | |
79072805 LW |
1535 | } |
1536 | ||
1537 | OP * | |
8ac85365 | 1538 | my(OP *o) |
93a17b20 LW |
1539 | { |
1540 | OP *kid; | |
93a17b20 LW |
1541 | I32 type; |
1542 | ||
3280af22 | 1543 | if (!o || PL_error_count) |
11343788 | 1544 | return o; |
93a17b20 | 1545 | |
11343788 | 1546 | type = o->op_type; |
93a17b20 | 1547 | if (type == OP_LIST) { |
11343788 | 1548 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
93a17b20 | 1549 | my(kid); |
dab48698 | 1550 | } else if (type == OP_UNDEF) { |
7766148a | 1551 | return o; |
dab48698 | 1552 | } else if (type != OP_PADSV && |
93a17b20 LW |
1553 | type != OP_PADAV && |
1554 | type != OP_PADHV && | |
1555 | type != OP_PUSHMARK) | |
1556 | { | |
22c35a8c | 1557 | yyerror(form("Can't declare %s in my", PL_op_desc[o->op_type])); |
11343788 | 1558 | return o; |
93a17b20 | 1559 | } |
11343788 MB |
1560 | o->op_flags |= OPf_MOD; |
1561 | o->op_private |= OPpLVAL_INTRO; | |
1562 | return o; | |
93a17b20 LW |
1563 | } |
1564 | ||
1565 | OP * | |
8ac85365 | 1566 | sawparens(OP *o) |
79072805 LW |
1567 | { |
1568 | if (o) | |
1569 | o->op_flags |= OPf_PARENS; | |
1570 | return o; | |
1571 | } | |
1572 | ||
1573 | OP * | |
8ac85365 | 1574 | bind_match(I32 type, OP *left, OP *right) |
79072805 | 1575 | { |
d008e5eb | 1576 | dTHR; |
11343788 | 1577 | OP *o; |
79072805 | 1578 | |
599cee73 PM |
1579 | if (ckWARN(WARN_UNSAFE) && |
1580 | (left->op_type == OP_RV2AV || | |
1581 | left->op_type == OP_RV2HV || | |
1582 | left->op_type == OP_PADAV || | |
1583 | left->op_type == OP_PADHV)) { | |
22c35a8c | 1584 | char *desc = PL_op_desc[(right->op_type == OP_SUBST || |
599cee73 PM |
1585 | right->op_type == OP_TRANS) |
1586 | ? right->op_type : OP_MATCH]; | |
1587 | char *sample = ((left->op_type == OP_RV2AV || | |
1588 | left->op_type == OP_PADAV) | |
1589 | ? "@array" : "%hash"); | |
1590 | warner(WARN_UNSAFE, | |
1591 | "Applying %s to %s will act on scalar(%s)", | |
1592 | desc, sample, sample); | |
2ae324a7 | 1593 | } |
1594 | ||
79072805 LW |
1595 | if (right->op_type == OP_MATCH || |
1596 | right->op_type == OP_SUBST || | |
1597 | right->op_type == OP_TRANS) { | |
1598 | right->op_flags |= OPf_STACKED; | |
1599 | if (right->op_type != OP_MATCH) | |
463ee0b2 | 1600 | left = mod(left, right->op_type); |
79072805 | 1601 | if (right->op_type == OP_TRANS) |
11343788 | 1602 | o = newBINOP(OP_NULL, OPf_STACKED, scalar(left), right); |
79072805 | 1603 | else |
11343788 | 1604 | o = prepend_elem(right->op_type, scalar(left), right); |
79072805 | 1605 | if (type == OP_NOT) |
11343788 MB |
1606 | return newUNOP(OP_NOT, 0, scalar(o)); |
1607 | return o; | |
79072805 LW |
1608 | } |
1609 | else | |
1610 | return bind_match(type, left, | |
1611 | pmruntime(newPMOP(OP_MATCH, 0), right, Nullop)); | |
1612 | } | |
1613 | ||
1614 | OP * | |
8ac85365 | 1615 | invert(OP *o) |
79072805 | 1616 | { |
11343788 MB |
1617 | if (!o) |
1618 | return o; | |
79072805 | 1619 | /* XXX need to optimize away NOT NOT here? Or do we let optimizer do it? */ |
11343788 | 1620 | return newUNOP(OP_NOT, OPf_SPECIAL, scalar(o)); |
79072805 LW |
1621 | } |
1622 | ||
1623 | OP * | |
8ac85365 | 1624 | scope(OP *o) |
79072805 LW |
1625 | { |
1626 | if (o) { | |
3280af22 | 1627 | if (o->op_flags & OPf_PARENS || PERLDB_NOOPT || PL_tainting) { |
463ee0b2 LW |
1628 | o = prepend_elem(OP_LINESEQ, newOP(OP_ENTER, 0), o); |
1629 | o->op_type = OP_LEAVE; | |
22c35a8c | 1630 | o->op_ppaddr = PL_ppaddr[OP_LEAVE]; |
463ee0b2 LW |
1631 | } |
1632 | else { | |
1633 | if (o->op_type == OP_LINESEQ) { | |
1634 | OP *kid; | |
1635 | o->op_type = OP_SCOPE; | |
22c35a8c | 1636 | o->op_ppaddr = PL_ppaddr[OP_SCOPE]; |
463ee0b2 | 1637 | kid = ((LISTOP*)o)->op_first; |
748a9306 LW |
1638 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE){ |
1639 | SvREFCNT_dec(((COP*)kid)->cop_filegv); | |
8990e307 | 1640 | null(kid); |
748a9306 | 1641 | } |
463ee0b2 LW |
1642 | } |
1643 | else | |
748a9306 | 1644 | o = newLISTOP(OP_SCOPE, 0, o, Nullop); |
463ee0b2 | 1645 | } |
79072805 LW |
1646 | } |
1647 | return o; | |
1648 | } | |
1649 | ||
b3ac6de7 IZ |
1650 | void |
1651 | save_hints(void) | |
1652 | { | |
3280af22 NIS |
1653 | SAVEI32(PL_hints); |
1654 | SAVESPTR(GvHV(PL_hintgv)); | |
1655 | GvHV(PL_hintgv) = newHVhv(GvHV(PL_hintgv)); | |
1656 | SAVEFREESV(GvHV(PL_hintgv)); | |
b3ac6de7 IZ |
1657 | } |
1658 | ||
a0d0e21e | 1659 | int |
8ac85365 | 1660 | block_start(int full) |
79072805 | 1661 | { |
11343788 | 1662 | dTHR; |
3280af22 | 1663 | int retval = PL_savestack_ix; |
b3ac6de7 | 1664 | |
3280af22 | 1665 | SAVEI32(PL_comppad_name_floor); |
55497cff | 1666 | if (full) { |
3280af22 NIS |
1667 | if ((PL_comppad_name_fill = AvFILLp(PL_comppad_name)) > 0) |
1668 | PL_comppad_name_floor = PL_comppad_name_fill; | |
55497cff | 1669 | else |
3280af22 NIS |
1670 | PL_comppad_name_floor = 0; |
1671 | } | |
1672 | SAVEI32(PL_min_intro_pending); | |
1673 | SAVEI32(PL_max_intro_pending); | |
1674 | PL_min_intro_pending = 0; | |
1675 | SAVEI32(PL_comppad_name_fill); | |
1676 | SAVEI32(PL_padix_floor); | |
1677 | PL_padix_floor = PL_padix; | |
1678 | PL_pad_reset_pending = FALSE; | |
b3ac6de7 | 1679 | SAVEHINTS(); |
3280af22 | 1680 | PL_hints &= ~HINT_BLOCK_SCOPE; |
e24b16f9 | 1681 | SAVEPPTR(PL_compiling.cop_warnings); |
599cee73 PM |
1682 | if (PL_compiling.cop_warnings != WARN_ALL && |
1683 | PL_compiling.cop_warnings != WARN_NONE) { | |
1684 | PL_compiling.cop_warnings = newSVsv(PL_compiling.cop_warnings) ; | |
1685 | SAVEFREESV(PL_compiling.cop_warnings) ; | |
1686 | } | |
1687 | ||
1688 | ||
a0d0e21e LW |
1689 | return retval; |
1690 | } | |
1691 | ||
1692 | OP* | |
8ac85365 | 1693 | block_end(I32 floor, OP *seq) |
a0d0e21e | 1694 | { |
11343788 | 1695 | dTHR; |
3280af22 | 1696 | int needblockscope = PL_hints & HINT_BLOCK_SCOPE; |
a0d0e21e | 1697 | OP* retval = scalarseq(seq); |
a0d0e21e | 1698 | LEAVE_SCOPE(floor); |
3280af22 | 1699 | PL_pad_reset_pending = FALSE; |
e24b16f9 | 1700 | PL_compiling.op_private = PL_hints; |
a0d0e21e | 1701 | if (needblockscope) |
3280af22 NIS |
1702 | PL_hints |= HINT_BLOCK_SCOPE; /* propagate out */ |
1703 | pad_leavemy(PL_comppad_name_fill); | |
1704 | PL_cop_seqmax++; | |
a0d0e21e LW |
1705 | return retval; |
1706 | } | |
1707 | ||
76e3520e | 1708 | STATIC OP * |
54b9620d MB |
1709 | newDEFSVOP(void) |
1710 | { | |
1711 | #ifdef USE_THREADS | |
1712 | OP *o = newOP(OP_THREADSV, 0); | |
1713 | o->op_targ = find_threadsv("_"); | |
1714 | return o; | |
1715 | #else | |
3280af22 | 1716 | return newSVREF(newGVOP(OP_GV, 0, PL_defgv)); |
54b9620d MB |
1717 | #endif /* USE_THREADS */ |
1718 | } | |
1719 | ||
a0d0e21e | 1720 | void |
8ac85365 | 1721 | newPROG(OP *o) |
a0d0e21e | 1722 | { |
11343788 | 1723 | dTHR; |
3280af22 NIS |
1724 | if (PL_in_eval) { |
1725 | PL_eval_root = newUNOP(OP_LEAVEEVAL, ((PL_in_eval & 4) ? OPf_SPECIAL : 0), o); | |
1726 | PL_eval_start = linklist(PL_eval_root); | |
1727 | PL_eval_root->op_next = 0; | |
1728 | peep(PL_eval_start); | |
a0d0e21e LW |
1729 | } |
1730 | else { | |
5dc0d613 | 1731 | if (!o) |
a0d0e21e | 1732 | return; |
3280af22 NIS |
1733 | PL_main_root = scope(sawparens(scalarvoid(o))); |
1734 | PL_curcop = &PL_compiling; | |
1735 | PL_main_start = LINKLIST(PL_main_root); | |
1736 | PL_main_root->op_next = 0; | |
1737 | peep(PL_main_start); | |
1738 | PL_compcv = 0; | |
3841441e | 1739 | |
4fdae800 | 1740 | /* Register with debugger */ |
84902520 | 1741 | if (PERLDB_INTER) { |
3841441e | 1742 | CV *cv = perl_get_cv("DB::postponed", FALSE); |
3841441e CS |
1743 | if (cv) { |
1744 | dSP; | |
924508f0 | 1745 | PUSHMARK(SP); |
3280af22 | 1746 | XPUSHs((SV*)PL_compiling.cop_filegv); |
3841441e CS |
1747 | PUTBACK; |
1748 | perl_call_sv((SV*)cv, G_DISCARD); | |
1749 | } | |
1750 | } | |
79072805 | 1751 | } |
79072805 LW |
1752 | } |
1753 | ||
1754 | OP * | |
8ac85365 | 1755 | localize(OP *o, I32 lex) |
79072805 LW |
1756 | { |
1757 | if (o->op_flags & OPf_PARENS) | |
1758 | list(o); | |
8990e307 | 1759 | else { |
d008e5eb | 1760 | dTHR; |
599cee73 | 1761 | if (ckWARN(WARN_PARENTHESIS) && PL_bufptr > PL_oldbufptr && PL_bufptr[-1] == ',') { |
8990e307 | 1762 | char *s; |
834a4ddd | 1763 | for (s = PL_bufptr; *s && (isALNUM(*s) || (*s & 0x80) || strchr("@$%, ",*s)); s++) ; |
a0d0e21e | 1764 | if (*s == ';' || *s == '=') |
752ebe84 | 1765 | warner(WARN_PARENTHESIS, "Parentheses missing around \"%s\" list", |
599cee73 | 1766 | lex ? "my" : "local"); |
8990e307 LW |
1767 | } |
1768 | } | |
3280af22 NIS |
1769 | PL_in_my = FALSE; |
1770 | PL_in_my_stash = Nullhv; | |
93a17b20 LW |
1771 | if (lex) |
1772 | return my(o); | |
1773 | else | |
463ee0b2 | 1774 | return mod(o, OP_NULL); /* a bit kludgey */ |
79072805 LW |
1775 | } |
1776 | ||
1777 | OP * | |
8ac85365 | 1778 | jmaybe(OP *o) |
79072805 LW |
1779 | { |
1780 | if (o->op_type == OP_LIST) { | |
554b3eca MB |
1781 | OP *o2; |
1782 | #ifdef USE_THREADS | |
2faa37cc | 1783 | o2 = newOP(OP_THREADSV, 0); |
54b9620d | 1784 | o2->op_targ = find_threadsv(";"); |
554b3eca MB |
1785 | #else |
1786 | o2 = newSVREF(newGVOP(OP_GV, 0, gv_fetchpv(";", TRUE, SVt_PV))), | |
1787 | #endif /* USE_THREADS */ | |
1788 | o = convert(OP_JOIN, 0, prepend_elem(OP_LIST, o2, o)); | |
79072805 LW |
1789 | } |
1790 | return o; | |
1791 | } | |
1792 | ||
1793 | OP * | |
8ac85365 | 1794 | fold_constants(register OP *o) |
79072805 | 1795 | { |
11343788 | 1796 | dTHR; |
79072805 LW |
1797 | register OP *curop; |
1798 | I32 type = o->op_type; | |
748a9306 | 1799 | SV *sv; |
79072805 | 1800 | |
22c35a8c | 1801 | if (PL_opargs[type] & OA_RETSCALAR) |
79072805 | 1802 | scalar(o); |
22c35a8c | 1803 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 1804 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 | 1805 | |
22c35a8c GS |
1806 | if ((PL_opargs[type] & OA_OTHERINT) && (PL_hints & HINT_INTEGER)) |
1807 | o->op_ppaddr = PL_ppaddr[type = ++(o->op_type)]; | |
85e6fe83 | 1808 | |
22c35a8c | 1809 | if (!(PL_opargs[type] & OA_FOLDCONST)) |
79072805 LW |
1810 | goto nope; |
1811 | ||
de939608 CS |
1812 | switch (type) { |
1813 | case OP_SPRINTF: | |
1814 | case OP_UCFIRST: | |
1815 | case OP_LCFIRST: | |
1816 | case OP_UC: | |
1817 | case OP_LC: | |
69dcf70c MB |
1818 | case OP_SLT: |
1819 | case OP_SGT: | |
1820 | case OP_SLE: | |
1821 | case OP_SGE: | |
1822 | case OP_SCMP: | |
1823 | ||
de939608 CS |
1824 | if (o->op_private & OPpLOCALE) |
1825 | goto nope; | |
1826 | } | |
1827 | ||
3280af22 | 1828 | if (PL_error_count) |
a0d0e21e LW |
1829 | goto nope; /* Don't try to run w/ errors */ |
1830 | ||
79072805 | 1831 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
93a17b20 LW |
1832 | if (curop->op_type != OP_CONST && |
1833 | curop->op_type != OP_LIST && | |
1834 | curop->op_type != OP_SCALAR && | |
a0d0e21e | 1835 | curop->op_type != OP_NULL && |
93a17b20 | 1836 | curop->op_type != OP_PUSHMARK) { |
79072805 LW |
1837 | goto nope; |
1838 | } | |
1839 | } | |
1840 | ||
1841 | curop = LINKLIST(o); | |
1842 | o->op_next = 0; | |
533c011a | 1843 | PL_op = curop; |
76e3520e | 1844 | CALLRUNOPS(); |
3280af22 | 1845 | sv = *(PL_stack_sp--); |
748a9306 | 1846 | if (o->op_targ && sv == PAD_SV(o->op_targ)) /* grab pad temp? */ |
79072805 | 1847 | pad_swipe(o->op_targ); |
748a9306 LW |
1848 | else if (SvTEMP(sv)) { /* grab mortal temp? */ |
1849 | (void)SvREFCNT_inc(sv); | |
1850 | SvTEMP_off(sv); | |
85e6fe83 | 1851 | } |
79072805 LW |
1852 | op_free(o); |
1853 | if (type == OP_RV2GV) | |
b1cb66bf | 1854 | return newGVOP(OP_GV, 0, (GV*)sv); |
748a9306 | 1855 | else { |
ee580363 GS |
1856 | /* try to smush double to int, but don't smush -2.0 to -2 */ |
1857 | if ((SvFLAGS(sv) & (SVf_IOK|SVf_NOK|SVf_POK)) == SVf_NOK && | |
1858 | type != OP_NEGATE) | |
1859 | { | |
748a9306 | 1860 | IV iv = SvIV(sv); |
ee580363 | 1861 | if ((double)iv == SvNV(sv)) { |
748a9306 LW |
1862 | SvREFCNT_dec(sv); |
1863 | sv = newSViv(iv); | |
1864 | } | |
b1cb66bf | 1865 | else |
1866 | SvIOK_off(sv); /* undo SvIV() damage */ | |
748a9306 LW |
1867 | } |
1868 | return newSVOP(OP_CONST, 0, sv); | |
1869 | } | |
aeea060c | 1870 | |
79072805 | 1871 | nope: |
22c35a8c | 1872 | if (!(PL_opargs[type] & OA_OTHERINT)) |
79072805 | 1873 | return o; |
79072805 | 1874 | |
3280af22 | 1875 | if (!(PL_hints & HINT_INTEGER)) { |
a0d0e21e | 1876 | if (type == OP_DIVIDE || !(o->op_flags & OPf_KIDS)) |
85e6fe83 LW |
1877 | return o; |
1878 | ||
1879 | for (curop = ((UNOP*)o)->op_first; curop; curop = curop->op_sibling) { | |
1880 | if (curop->op_type == OP_CONST) { | |
b1cb66bf | 1881 | if (SvIOK(((SVOP*)curop)->op_sv)) |
85e6fe83 LW |
1882 | continue; |
1883 | return o; | |
1884 | } | |
22c35a8c | 1885 | if (PL_opargs[curop->op_type] & OA_RETINTEGER) |
79072805 LW |
1886 | continue; |
1887 | return o; | |
1888 | } | |
22c35a8c | 1889 | o->op_ppaddr = PL_ppaddr[++(o->op_type)]; |
79072805 LW |
1890 | } |
1891 | ||
79072805 LW |
1892 | return o; |
1893 | } | |
1894 | ||
1895 | OP * | |
8ac85365 | 1896 | gen_constant_list(register OP *o) |
79072805 | 1897 | { |
11343788 | 1898 | dTHR; |
79072805 | 1899 | register OP *curop; |
3280af22 | 1900 | I32 oldtmps_floor = PL_tmps_floor; |
79072805 | 1901 | |
a0d0e21e | 1902 | list(o); |
3280af22 | 1903 | if (PL_error_count) |
a0d0e21e LW |
1904 | return o; /* Don't attempt to run with errors */ |
1905 | ||
533c011a | 1906 | PL_op = curop = LINKLIST(o); |
a0d0e21e | 1907 | o->op_next = 0; |
11343788 | 1908 | pp_pushmark(ARGS); |
76e3520e | 1909 | CALLRUNOPS(); |
533c011a | 1910 | PL_op = curop; |
11343788 | 1911 | pp_anonlist(ARGS); |
3280af22 | 1912 | PL_tmps_floor = oldtmps_floor; |
79072805 LW |
1913 | |
1914 | o->op_type = OP_RV2AV; | |
22c35a8c | 1915 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
79072805 | 1916 | curop = ((UNOP*)o)->op_first; |
3280af22 | 1917 | ((UNOP*)o)->op_first = newSVOP(OP_CONST, 0, SvREFCNT_inc(*PL_stack_sp--)); |
79072805 | 1918 | op_free(curop); |
79072805 LW |
1919 | linklist(o); |
1920 | return list(o); | |
1921 | } | |
1922 | ||
1923 | OP * | |
8ac85365 | 1924 | convert(I32 type, I32 flags, OP *o) |
79072805 LW |
1925 | { |
1926 | OP *kid; | |
a0d0e21e | 1927 | OP *last = 0; |
79072805 | 1928 | |
11343788 MB |
1929 | if (!o || o->op_type != OP_LIST) |
1930 | o = newLISTOP(OP_LIST, 0, o, Nullop); | |
748a9306 | 1931 | else |
5dc0d613 | 1932 | o->op_flags &= ~OPf_WANT; |
79072805 | 1933 | |
22c35a8c | 1934 | if (!(PL_opargs[type] & OA_MARK)) |
11343788 | 1935 | null(cLISTOPo->op_first); |
8990e307 | 1936 | |
11343788 | 1937 | o->op_type = type; |
22c35a8c | 1938 | o->op_ppaddr = PL_ppaddr[type]; |
11343788 | 1939 | o->op_flags |= flags; |
79072805 | 1940 | |
11343788 MB |
1941 | o = CHECKOP(type, o); |
1942 | if (o->op_type != type) | |
1943 | return o; | |
79072805 | 1944 | |
11343788 | 1945 | if (cLISTOPo->op_children < 7) { |
79072805 | 1946 | /* XXX do we really need to do this if we're done appending?? */ |
11343788 | 1947 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 | 1948 | last = kid; |
11343788 | 1949 | cLISTOPo->op_last = last; /* in case check substituted last arg */ |
79072805 LW |
1950 | } |
1951 | ||
11343788 | 1952 | return fold_constants(o); |
79072805 LW |
1953 | } |
1954 | ||
1955 | /* List constructors */ | |
1956 | ||
1957 | OP * | |
8ac85365 | 1958 | append_elem(I32 type, OP *first, OP *last) |
79072805 LW |
1959 | { |
1960 | if (!first) | |
1961 | return last; | |
8990e307 LW |
1962 | |
1963 | if (!last) | |
79072805 | 1964 | return first; |
8990e307 | 1965 | |
a0d0e21e LW |
1966 | if (first->op_type != type || type==OP_LIST && first->op_flags & OPf_PARENS) |
1967 | return newLISTOP(type, 0, first, last); | |
79072805 | 1968 | |
a0d0e21e LW |
1969 | if (first->op_flags & OPf_KIDS) |
1970 | ((LISTOP*)first)->op_last->op_sibling = last; | |
1971 | else { | |
1972 | first->op_flags |= OPf_KIDS; | |
1973 | ((LISTOP*)first)->op_first = last; | |
1974 | } | |
1975 | ((LISTOP*)first)->op_last = last; | |
1976 | ((LISTOP*)first)->op_children++; | |
1977 | return first; | |
79072805 LW |
1978 | } |
1979 | ||
1980 | OP * | |
8ac85365 | 1981 | append_list(I32 type, LISTOP *first, LISTOP *last) |
79072805 LW |
1982 | { |
1983 | if (!first) | |
1984 | return (OP*)last; | |
8990e307 LW |
1985 | |
1986 | if (!last) | |
79072805 | 1987 | return (OP*)first; |
8990e307 LW |
1988 | |
1989 | if (first->op_type != type) | |
79072805 | 1990 | return prepend_elem(type, (OP*)first, (OP*)last); |
8990e307 LW |
1991 | |
1992 | if (last->op_type != type) | |
79072805 LW |
1993 | return append_elem(type, (OP*)first, (OP*)last); |
1994 | ||
1995 | first->op_last->op_sibling = last->op_first; | |
1996 | first->op_last = last->op_last; | |
1997 | first->op_children += last->op_children; | |
1998 | if (first->op_children) | |
acb74605 | 1999 | first->op_flags |= OPf_KIDS; |
79072805 LW |
2000 | |
2001 | Safefree(last); | |
2002 | return (OP*)first; | |
2003 | } | |
2004 | ||
2005 | OP * | |
8ac85365 | 2006 | prepend_elem(I32 type, OP *first, OP *last) |
79072805 LW |
2007 | { |
2008 | if (!first) | |
2009 | return last; | |
8990e307 LW |
2010 | |
2011 | if (!last) | |
79072805 | 2012 | return first; |
8990e307 LW |
2013 | |
2014 | if (last->op_type == type) { | |
2015 | if (type == OP_LIST) { /* already a PUSHMARK there */ | |
2016 | first->op_sibling = ((LISTOP*)last)->op_first->op_sibling; | |
2017 | ((LISTOP*)last)->op_first->op_sibling = first; | |
2018 | } | |
2019 | else { | |
2020 | if (!(last->op_flags & OPf_KIDS)) { | |
2021 | ((LISTOP*)last)->op_last = first; | |
2022 | last->op_flags |= OPf_KIDS; | |
2023 | } | |
2024 | first->op_sibling = ((LISTOP*)last)->op_first; | |
2025 | ((LISTOP*)last)->op_first = first; | |
79072805 | 2026 | } |
79072805 LW |
2027 | ((LISTOP*)last)->op_children++; |
2028 | return last; | |
2029 | } | |
2030 | ||
2031 | return newLISTOP(type, 0, first, last); | |
2032 | } | |
2033 | ||
2034 | /* Constructors */ | |
2035 | ||
2036 | OP * | |
8ac85365 | 2037 | newNULLLIST(void) |
79072805 | 2038 | { |
8990e307 LW |
2039 | return newOP(OP_STUB, 0); |
2040 | } | |
2041 | ||
2042 | OP * | |
8ac85365 | 2043 | force_list(OP *o) |
8990e307 | 2044 | { |
11343788 MB |
2045 | if (!o || o->op_type != OP_LIST) |
2046 | o = newLISTOP(OP_LIST, 0, o, Nullop); | |
2047 | null(o); | |
2048 | return o; | |
79072805 LW |
2049 | } |
2050 | ||
2051 | OP * | |
8ac85365 | 2052 | newLISTOP(I32 type, I32 flags, OP *first, OP *last) |
79072805 LW |
2053 | { |
2054 | LISTOP *listop; | |
2055 | ||
2056 | Newz(1101, listop, 1, LISTOP); | |
2057 | ||
2058 | listop->op_type = type; | |
22c35a8c | 2059 | listop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2060 | listop->op_children = (first != 0) + (last != 0); |
2061 | listop->op_flags = flags; | |
79072805 LW |
2062 | |
2063 | if (!last && first) | |
2064 | last = first; | |
2065 | else if (!first && last) | |
2066 | first = last; | |
8990e307 LW |
2067 | else if (first) |
2068 | first->op_sibling = last; | |
79072805 LW |
2069 | listop->op_first = first; |
2070 | listop->op_last = last; | |
8990e307 LW |
2071 | if (type == OP_LIST) { |
2072 | OP* pushop; | |
2073 | pushop = newOP(OP_PUSHMARK, 0); | |
2074 | pushop->op_sibling = first; | |
2075 | listop->op_first = pushop; | |
2076 | listop->op_flags |= OPf_KIDS; | |
2077 | if (!last) | |
2078 | listop->op_last = pushop; | |
2079 | } | |
2080 | else if (listop->op_children) | |
2081 | listop->op_flags |= OPf_KIDS; | |
79072805 LW |
2082 | |
2083 | return (OP*)listop; | |
2084 | } | |
2085 | ||
2086 | OP * | |
8ac85365 | 2087 | newOP(I32 type, I32 flags) |
79072805 | 2088 | { |
11343788 MB |
2089 | OP *o; |
2090 | Newz(1101, o, 1, OP); | |
2091 | o->op_type = type; | |
22c35a8c | 2092 | o->op_ppaddr = PL_ppaddr[type]; |
11343788 | 2093 | o->op_flags = flags; |
79072805 | 2094 | |
11343788 MB |
2095 | o->op_next = o; |
2096 | o->op_private = 0 + (flags >> 8); | |
22c35a8c | 2097 | if (PL_opargs[type] & OA_RETSCALAR) |
11343788 | 2098 | scalar(o); |
22c35a8c | 2099 | if (PL_opargs[type] & OA_TARGET) |
11343788 MB |
2100 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
2101 | return CHECKOP(type, o); | |
79072805 LW |
2102 | } |
2103 | ||
2104 | OP * | |
8ac85365 | 2105 | newUNOP(I32 type, I32 flags, OP *first) |
79072805 LW |
2106 | { |
2107 | UNOP *unop; | |
2108 | ||
93a17b20 | 2109 | if (!first) |
aeea060c | 2110 | first = newOP(OP_STUB, 0); |
22c35a8c | 2111 | if (PL_opargs[type] & OA_MARK) |
8990e307 | 2112 | first = force_list(first); |
93a17b20 | 2113 | |
79072805 LW |
2114 | Newz(1101, unop, 1, UNOP); |
2115 | unop->op_type = type; | |
22c35a8c | 2116 | unop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2117 | unop->op_first = first; |
2118 | unop->op_flags = flags | OPf_KIDS; | |
c07a80fd | 2119 | unop->op_private = 1 | (flags >> 8); |
e50aee73 | 2120 | unop = (UNOP*) CHECKOP(type, unop); |
79072805 LW |
2121 | if (unop->op_next) |
2122 | return (OP*)unop; | |
2123 | ||
a0d0e21e | 2124 | return fold_constants((OP *) unop); |
79072805 LW |
2125 | } |
2126 | ||
2127 | OP * | |
8ac85365 | 2128 | newBINOP(I32 type, I32 flags, OP *first, OP *last) |
79072805 LW |
2129 | { |
2130 | BINOP *binop; | |
2131 | Newz(1101, binop, 1, BINOP); | |
2132 | ||
2133 | if (!first) | |
2134 | first = newOP(OP_NULL, 0); | |
2135 | ||
2136 | binop->op_type = type; | |
22c35a8c | 2137 | binop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2138 | binop->op_first = first; |
2139 | binop->op_flags = flags | OPf_KIDS; | |
2140 | if (!last) { | |
2141 | last = first; | |
c07a80fd | 2142 | binop->op_private = 1 | (flags >> 8); |
79072805 LW |
2143 | } |
2144 | else { | |
c07a80fd | 2145 | binop->op_private = 2 | (flags >> 8); |
79072805 LW |
2146 | first->op_sibling = last; |
2147 | } | |
2148 | ||
e50aee73 | 2149 | binop = (BINOP*)CHECKOP(type, binop); |
79072805 LW |
2150 | if (binop->op_next) |
2151 | return (OP*)binop; | |
2152 | ||
7284ab6f | 2153 | binop->op_last = binop->op_first->op_sibling; |
79072805 | 2154 | |
a0d0e21e | 2155 | return fold_constants((OP *)binop); |
79072805 LW |
2156 | } |
2157 | ||
a0ed51b3 LW |
2158 | static int |
2159 | utf8compare(const void *a, const void *b) | |
2160 | { | |
2161 | int i; | |
2162 | for (i = 0; i < 10; i++) { | |
2163 | if ((*(U8**)a)[i] < (*(U8**)b)[i]) | |
2164 | return -1; | |
2165 | if ((*(U8**)a)[i] > (*(U8**)b)[i]) | |
2166 | return 1; | |
2167 | } | |
2168 | return 0; | |
2169 | } | |
2170 | ||
79072805 | 2171 | OP * |
8ac85365 | 2172 | pmtrans(OP *o, OP *expr, OP *repl) |
79072805 | 2173 | { |
79072805 LW |
2174 | SV *tstr = ((SVOP*)expr)->op_sv; |
2175 | SV *rstr = ((SVOP*)repl)->op_sv; | |
463ee0b2 LW |
2176 | STRLEN tlen; |
2177 | STRLEN rlen; | |
ec49126f | 2178 | register U8 *t = (U8*)SvPV(tstr, tlen); |
2179 | register U8 *r = (U8*)SvPV(rstr, rlen); | |
79072805 LW |
2180 | register I32 i; |
2181 | register I32 j; | |
a0ed51b3 | 2182 | I32 del; |
79072805 | 2183 | I32 complement; |
5d06d08e | 2184 | I32 squash; |
79072805 LW |
2185 | register short *tbl; |
2186 | ||
11343788 | 2187 | complement = o->op_private & OPpTRANS_COMPLEMENT; |
a0ed51b3 | 2188 | del = o->op_private & OPpTRANS_DELETE; |
5d06d08e | 2189 | squash = o->op_private & OPpTRANS_SQUASH; |
79072805 | 2190 | |
a0ed51b3 | 2191 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { |
79cb57f6 | 2192 | SV* listsv = newSVpvn("# comment\n",10); |
a0ed51b3 LW |
2193 | SV* transv = 0; |
2194 | U8* tend = t + tlen; | |
2195 | U8* rend = r + rlen; | |
2196 | I32 ulen; | |
2197 | U32 tfirst = 1; | |
2198 | U32 tlast = 0; | |
2199 | I32 tdiff; | |
2200 | U32 rfirst = 1; | |
2201 | U32 rlast = 0; | |
2202 | I32 rdiff; | |
2203 | I32 diff; | |
2204 | I32 none = 0; | |
2205 | U32 max = 0; | |
2206 | I32 bits; | |
2207 | I32 grows = 0; | |
2208 | I32 havefinal = 0; | |
2209 | U32 final; | |
2210 | HV *hv; | |
2211 | I32 from_utf = o->op_private & OPpTRANS_FROM_UTF; | |
2212 | I32 to_utf = o->op_private & OPpTRANS_TO_UTF; | |
2213 | ||
2214 | if (complement) { | |
2215 | U8 tmpbuf[10]; | |
2216 | U8** cp; | |
2217 | UV nextmin = 0; | |
2218 | New(1109, cp, tlen, U8*); | |
2219 | i = 0; | |
79cb57f6 | 2220 | transv = newSVpvn("",0); |
a0ed51b3 LW |
2221 | while (t < tend) { |
2222 | cp[i++] = t; | |
2223 | t += UTF8SKIP(t); | |
2224 | if (*t == 0xff) { | |
2225 | t++; | |
2226 | t += UTF8SKIP(t); | |
2227 | } | |
2228 | } | |
2229 | qsort(cp, i, sizeof(U8*), utf8compare); | |
2230 | for (j = 0; j < i; j++) { | |
2231 | U8 *s = cp[j]; | |
2232 | UV val = utf8_to_uv(s, &ulen); | |
2233 | s += ulen; | |
2234 | diff = val - nextmin; | |
2235 | if (diff > 0) { | |
2236 | t = uv_to_utf8(tmpbuf,nextmin); | |
dfe13c55 | 2237 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 LW |
2238 | if (diff > 1) { |
2239 | t = uv_to_utf8(tmpbuf, val - 1); | |
2240 | sv_catpvn(transv, "\377", 1); | |
dfe13c55 | 2241 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 LW |
2242 | } |
2243 | } | |
2244 | if (*s == 0xff) | |
2245 | val = utf8_to_uv(s+1, &ulen); | |
2246 | if (val >= nextmin) | |
2247 | nextmin = val + 1; | |
2248 | } | |
2249 | t = uv_to_utf8(tmpbuf,nextmin); | |
dfe13c55 | 2250 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 LW |
2251 | t = uv_to_utf8(tmpbuf, 0x7fffffff); |
2252 | sv_catpvn(transv, "\377", 1); | |
dfe13c55 GS |
2253 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
2254 | t = (U8*)SvPVX(transv); | |
a0ed51b3 LW |
2255 | tlen = SvCUR(transv); |
2256 | tend = t + tlen; | |
2257 | } | |
2258 | else if (!rlen && !del) { | |
2259 | r = t; rlen = tlen; rend = tend; | |
4757a243 LW |
2260 | } |
2261 | if (!squash) { | |
2262 | if (to_utf && from_utf) { /* only counting characters */ | |
2263 | if (t == r || (tlen == rlen && memEQ(t, r, tlen))) | |
2264 | o->op_private |= OPpTRANS_IDENTICAL; | |
2265 | } | |
2266 | else { /* straight latin-1 translation */ | |
2267 | if (tlen == 4 && memEQ(t, "\0\377\303\277", 4) && | |
2268 | rlen == 4 && memEQ(r, "\0\377\303\277", 4)) | |
2269 | o->op_private |= OPpTRANS_IDENTICAL; | |
2270 | } | |
a0ed51b3 LW |
2271 | } |
2272 | ||
2273 | while (t < tend || tfirst <= tlast) { | |
2274 | /* see if we need more "t" chars */ | |
2275 | if (tfirst > tlast) { | |
2276 | tfirst = (I32)utf8_to_uv(t, &ulen); | |
2277 | t += ulen; | |
2278 | if (t < tend && *t == 0xff) { /* illegal utf8 val indicates range */ | |
2279 | tlast = (I32)utf8_to_uv(++t, &ulen); | |
2280 | t += ulen; | |
2281 | } | |
2282 | else | |
2283 | tlast = tfirst; | |
2284 | } | |
2285 | ||
2286 | /* now see if we need more "r" chars */ | |
2287 | if (rfirst > rlast) { | |
2288 | if (r < rend) { | |
2289 | rfirst = (I32)utf8_to_uv(r, &ulen); | |
2290 | r += ulen; | |
2291 | if (r < rend && *r == 0xff) { /* illegal utf8 val indicates range */ | |
2292 | rlast = (I32)utf8_to_uv(++r, &ulen); | |
2293 | r += ulen; | |
2294 | } | |
2295 | else | |
2296 | rlast = rfirst; | |
2297 | } | |
2298 | else { | |
2299 | if (!havefinal++) | |
2300 | final = rlast; | |
2301 | rfirst = rlast = 0xffffffff; | |
2302 | } | |
2303 | } | |
2304 | ||
2305 | /* now see which range will peter our first, if either. */ | |
2306 | tdiff = tlast - tfirst; | |
2307 | rdiff = rlast - rfirst; | |
2308 | ||
2309 | if (tdiff <= rdiff) | |
2310 | diff = tdiff; | |
2311 | else | |
2312 | diff = rdiff; | |
2313 | ||
2314 | if (rfirst == 0xffffffff) { | |
2315 | diff = tdiff; /* oops, pretend rdiff is infinite */ | |
2316 | if (diff > 0) | |
2317 | sv_catpvf(listsv, "%04x\t%04x\tXXXX\n", tfirst, tlast); | |
2318 | else | |
2319 | sv_catpvf(listsv, "%04x\t\tXXXX\n", tfirst); | |
2320 | } | |
2321 | else { | |
2322 | if (diff > 0) | |
2323 | sv_catpvf(listsv, "%04x\t%04x\t%04x\n", tfirst, tfirst + diff, rfirst); | |
2324 | else | |
2325 | sv_catpvf(listsv, "%04x\t\t%04x\n", tfirst, rfirst); | |
2326 | ||
2327 | if (rfirst + diff > max) | |
2328 | max = rfirst + diff; | |
2329 | rfirst += diff + 1; | |
2330 | if (!grows) { | |
2331 | if (rfirst <= 0x80) | |
2332 | ; | |
2333 | else if (rfirst <= 0x800) | |
2334 | grows |= (tfirst < 0x80); | |
2335 | else if (rfirst <= 0x10000) | |
2336 | grows |= (tfirst < 0x800); | |
2337 | else if (rfirst <= 0x200000) | |
2338 | grows |= (tfirst < 0x10000); | |
2339 | else if (rfirst <= 0x4000000) | |
2340 | grows |= (tfirst < 0x200000); | |
2341 | else if (rfirst <= 0x80000000) | |
2342 | grows |= (tfirst < 0x4000000); | |
2343 | } | |
2344 | } | |
2345 | tfirst += diff + 1; | |
2346 | } | |
2347 | ||
2348 | none = ++max; | |
2349 | if (del) | |
2350 | del = ++max; | |
2351 | ||
2352 | if (max > 0xffff) | |
2353 | bits = 32; | |
2354 | else if (max > 0xff) | |
2355 | bits = 16; | |
2356 | else | |
2357 | bits = 8; | |
2358 | ||
2359 | cSVOPo->op_sv = (SV*)swash_init("utf8", "", listsv, bits, none); | |
2360 | SvREFCNT_dec(listsv); | |
2361 | if (transv) | |
2362 | SvREFCNT_dec(transv); | |
2363 | ||
2364 | if (!del && havefinal) | |
2365 | (void)hv_store((HV*)SvRV((cSVOPo->op_sv)), "FINAL", 5, newSViv((IV)final), 0); | |
2366 | ||
2367 | if (grows && to_utf) | |
2368 | o->op_private |= OPpTRANS_GROWS; | |
2369 | ||
2370 | op_free(expr); | |
2371 | op_free(repl); | |
2372 | return o; | |
2373 | } | |
2374 | ||
2375 | tbl = (short*)cPVOPo->op_pv; | |
79072805 LW |
2376 | if (complement) { |
2377 | Zero(tbl, 256, short); | |
2378 | for (i = 0; i < tlen; i++) | |
ec49126f | 2379 | tbl[t[i]] = -1; |
79072805 LW |
2380 | for (i = 0, j = 0; i < 256; i++) { |
2381 | if (!tbl[i]) { | |
2382 | if (j >= rlen) { | |
a0ed51b3 | 2383 | if (del) |
79072805 LW |
2384 | tbl[i] = -2; |
2385 | else if (rlen) | |
ec49126f | 2386 | tbl[i] = r[j-1]; |
79072805 LW |
2387 | else |
2388 | tbl[i] = i; | |
2389 | } | |
2390 | else | |
ec49126f | 2391 | tbl[i] = r[j++]; |
79072805 LW |
2392 | } |
2393 | } | |
2394 | } | |
2395 | else { | |
a0ed51b3 | 2396 | if (!rlen && !del) { |
79072805 | 2397 | r = t; rlen = tlen; |
5d06d08e | 2398 | if (!squash) |
4757a243 | 2399 | o->op_private |= OPpTRANS_IDENTICAL; |
79072805 LW |
2400 | } |
2401 | for (i = 0; i < 256; i++) | |
2402 | tbl[i] = -1; | |
2403 | for (i = 0, j = 0; i < tlen; i++,j++) { | |
2404 | if (j >= rlen) { | |
a0ed51b3 | 2405 | if (del) { |
ec49126f | 2406 | if (tbl[t[i]] == -1) |
2407 | tbl[t[i]] = -2; | |
79072805 LW |
2408 | continue; |
2409 | } | |
2410 | --j; | |
2411 | } | |
ec49126f | 2412 | if (tbl[t[i]] == -1) |
2413 | tbl[t[i]] = r[j]; | |
79072805 LW |
2414 | } |
2415 | } | |
2416 | op_free(expr); | |
2417 | op_free(repl); | |
2418 | ||
11343788 | 2419 | return o; |
79072805 LW |
2420 | } |
2421 | ||
2422 | OP * | |
8ac85365 | 2423 | newPMOP(I32 type, I32 flags) |
79072805 | 2424 | { |
11343788 | 2425 | dTHR; |
79072805 LW |
2426 | PMOP *pmop; |
2427 | ||
2428 | Newz(1101, pmop, 1, PMOP); | |
2429 | pmop->op_type = type; | |
22c35a8c | 2430 | pmop->op_ppaddr = PL_ppaddr[type]; |
79072805 | 2431 | pmop->op_flags = flags; |
c07a80fd | 2432 | pmop->op_private = 0 | (flags >> 8); |
79072805 | 2433 | |
3280af22 | 2434 | if (PL_hints & HINT_RE_TAINT) |
b3eb6a9b | 2435 | pmop->op_pmpermflags |= PMf_RETAINT; |
3280af22 | 2436 | if (PL_hints & HINT_LOCALE) |
b3eb6a9b GS |
2437 | pmop->op_pmpermflags |= PMf_LOCALE; |
2438 | pmop->op_pmflags = pmop->op_pmpermflags; | |
36477c24 | 2439 | |
79072805 | 2440 | /* link into pm list */ |
3280af22 NIS |
2441 | if (type != OP_TRANS && PL_curstash) { |
2442 | pmop->op_pmnext = HvPMROOT(PL_curstash); | |
2443 | HvPMROOT(PL_curstash) = pmop; | |
79072805 LW |
2444 | } |
2445 | ||
2446 | return (OP*)pmop; | |
2447 | } | |
2448 | ||
2449 | OP * | |
8ac85365 | 2450 | pmruntime(OP *o, OP *expr, OP *repl) |
79072805 | 2451 | { |
5c0ca799 | 2452 | dTHR; |
79072805 LW |
2453 | PMOP *pm; |
2454 | LOGOP *rcop; | |
ce862d02 | 2455 | I32 repl_has_vars = 0; |
79072805 | 2456 | |
11343788 MB |
2457 | if (o->op_type == OP_TRANS) |
2458 | return pmtrans(o, expr, repl); | |
79072805 | 2459 | |
3280af22 | 2460 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 2461 | pm = (PMOP*)o; |
79072805 LW |
2462 | |
2463 | if (expr->op_type == OP_CONST) { | |
463ee0b2 | 2464 | STRLEN plen; |
79072805 | 2465 | SV *pat = ((SVOP*)expr)->op_sv; |
463ee0b2 | 2466 | char *p = SvPV(pat, plen); |
11343788 | 2467 | if ((o->op_flags & OPf_SPECIAL) && strEQ(p, " ")) { |
93a17b20 | 2468 | sv_setpvn(pat, "\\s+", 3); |
463ee0b2 | 2469 | p = SvPV(pat, plen); |
79072805 LW |
2470 | pm->op_pmflags |= PMf_SKIPWHITE; |
2471 | } | |
15e52e56 | 2472 | pm->op_pmregexp = CALLREGCOMP(p, p + plen, pm); |
aeea060c | 2473 | if (strEQ("\\s+", pm->op_pmregexp->precomp)) |
85e6fe83 | 2474 | pm->op_pmflags |= PMf_WHITE; |
79072805 LW |
2475 | op_free(expr); |
2476 | } | |
2477 | else { | |
3280af22 NIS |
2478 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) |
2479 | expr = newUNOP((!(PL_hints & HINT_RE_EVAL) | |
2cd61cdb IZ |
2480 | ? OP_REGCRESET |
2481 | : OP_REGCMAYBE),0,expr); | |
463ee0b2 | 2482 | |
79072805 LW |
2483 | Newz(1101, rcop, 1, LOGOP); |
2484 | rcop->op_type = OP_REGCOMP; | |
22c35a8c | 2485 | rcop->op_ppaddr = PL_ppaddr[OP_REGCOMP]; |
79072805 | 2486 | rcop->op_first = scalar(expr); |
3280af22 | 2487 | rcop->op_flags |= ((PL_hints & HINT_RE_EVAL) |
2cd61cdb IZ |
2488 | ? (OPf_SPECIAL | OPf_KIDS) |
2489 | : OPf_KIDS); | |
79072805 | 2490 | rcop->op_private = 1; |
11343788 | 2491 | rcop->op_other = o; |
79072805 LW |
2492 | |
2493 | /* establish postfix order */ | |
3280af22 | 2494 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) { |
463ee0b2 LW |
2495 | LINKLIST(expr); |
2496 | rcop->op_next = expr; | |
2497 | ((UNOP*)expr)->op_first->op_next = (OP*)rcop; | |
2498 | } | |
2499 | else { | |
2500 | rcop->op_next = LINKLIST(expr); | |
2501 | expr->op_next = (OP*)rcop; | |
2502 | } | |
79072805 | 2503 | |
11343788 | 2504 | prepend_elem(o->op_type, scalar((OP*)rcop), o); |
79072805 LW |
2505 | } |
2506 | ||
2507 | if (repl) { | |
748a9306 | 2508 | OP *curop; |
0244c3a4 | 2509 | if (pm->op_pmflags & PMf_EVAL) { |
748a9306 | 2510 | curop = 0; |
0244c3a4 GS |
2511 | if (PL_curcop->cop_line < PL_multi_end) |
2512 | PL_curcop->cop_line = PL_multi_end; | |
2513 | } | |
554b3eca | 2514 | #ifdef USE_THREADS |
2faa37cc | 2515 | else if (repl->op_type == OP_THREADSV |
554b3eca | 2516 | && strchr("&`'123456789+", |
533c011a | 2517 | PL_threadsv_names[repl->op_targ])) |
554b3eca MB |
2518 | { |
2519 | curop = 0; | |
2520 | } | |
2521 | #endif /* USE_THREADS */ | |
748a9306 LW |
2522 | else if (repl->op_type == OP_CONST) |
2523 | curop = repl; | |
79072805 | 2524 | else { |
79072805 LW |
2525 | OP *lastop = 0; |
2526 | for (curop = LINKLIST(repl); curop!=repl; curop = LINKLIST(curop)) { | |
22c35a8c | 2527 | if (PL_opargs[curop->op_type] & OA_DANGEROUS) { |
554b3eca | 2528 | #ifdef USE_THREADS |
ce862d02 IZ |
2529 | if (curop->op_type == OP_THREADSV) { |
2530 | repl_has_vars = 1; | |
be949f6f | 2531 | if (strchr("&`'123456789+", curop->op_private)) |
ce862d02 | 2532 | break; |
554b3eca MB |
2533 | } |
2534 | #else | |
79072805 LW |
2535 | if (curop->op_type == OP_GV) { |
2536 | GV *gv = ((GVOP*)curop)->op_gv; | |
ce862d02 | 2537 | repl_has_vars = 1; |
93a17b20 | 2538 | if (strchr("&`'123456789+", *GvENAME(gv))) |
79072805 LW |
2539 | break; |
2540 | } | |
554b3eca | 2541 | #endif /* USE_THREADS */ |
79072805 LW |
2542 | else if (curop->op_type == OP_RV2CV) |
2543 | break; | |
2544 | else if (curop->op_type == OP_RV2SV || | |
2545 | curop->op_type == OP_RV2AV || | |
2546 | curop->op_type == OP_RV2HV || | |
2547 | curop->op_type == OP_RV2GV) { | |
2548 | if (lastop && lastop->op_type != OP_GV) /*funny deref?*/ | |
2549 | break; | |
2550 | } | |
748a9306 LW |
2551 | else if (curop->op_type == OP_PADSV || |
2552 | curop->op_type == OP_PADAV || | |
2553 | curop->op_type == OP_PADHV || | |
554b3eca | 2554 | curop->op_type == OP_PADANY) { |
ce862d02 | 2555 | repl_has_vars = 1; |
748a9306 | 2556 | } |
1167e5da SM |
2557 | else if (curop->op_type == OP_PUSHRE) |
2558 | ; /* Okay here, dangerous in newASSIGNOP */ | |
79072805 LW |
2559 | else |
2560 | break; | |
2561 | } | |
2562 | lastop = curop; | |
2563 | } | |
748a9306 | 2564 | } |
ce862d02 IZ |
2565 | if (curop == repl |
2566 | && !(repl_has_vars | |
2567 | && (!pm->op_pmregexp | |
2568 | || pm->op_pmregexp->reganch & ROPT_EVAL_SEEN))) { | |
748a9306 | 2569 | pm->op_pmflags |= PMf_CONST; /* const for long enough */ |
4633a7c4 | 2570 | pm->op_pmpermflags |= PMf_CONST; /* const for long enough */ |
11343788 | 2571 | prepend_elem(o->op_type, scalar(repl), o); |
748a9306 LW |
2572 | } |
2573 | else { | |
ce862d02 IZ |
2574 | if (curop == repl && !pm->op_pmregexp) { /* Has variables. */ |
2575 | pm->op_pmflags |= PMf_MAYBE_CONST; | |
2576 | pm->op_pmpermflags |= PMf_MAYBE_CONST; | |
2577 | } | |
748a9306 LW |
2578 | Newz(1101, rcop, 1, LOGOP); |
2579 | rcop->op_type = OP_SUBSTCONT; | |
22c35a8c | 2580 | rcop->op_ppaddr = PL_ppaddr[OP_SUBSTCONT]; |
748a9306 LW |
2581 | rcop->op_first = scalar(repl); |
2582 | rcop->op_flags |= OPf_KIDS; | |
2583 | rcop->op_private = 1; | |
11343788 | 2584 | rcop->op_other = o; |
748a9306 LW |
2585 | |
2586 | /* establish postfix order */ | |
2587 | rcop->op_next = LINKLIST(repl); | |
2588 | repl->op_next = (OP*)rcop; | |
2589 | ||
2590 | pm->op_pmreplroot = scalar((OP*)rcop); | |
2591 | pm->op_pmreplstart = LINKLIST(rcop); | |
2592 | rcop->op_next = 0; | |
79072805 LW |
2593 | } |
2594 | } | |
2595 | ||
2596 | return (OP*)pm; | |
2597 | } | |
2598 | ||
2599 | OP * | |
8ac85365 | 2600 | newSVOP(I32 type, I32 flags, SV *sv) |
79072805 LW |
2601 | { |
2602 | SVOP *svop; | |
2603 | Newz(1101, svop, 1, SVOP); | |
2604 | svop->op_type = type; | |
22c35a8c | 2605 | svop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2606 | svop->op_sv = sv; |
2607 | svop->op_next = (OP*)svop; | |
2608 | svop->op_flags = flags; | |
22c35a8c | 2609 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 2610 | scalar((OP*)svop); |
22c35a8c | 2611 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 2612 | svop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2613 | return CHECKOP(type, svop); |
79072805 LW |
2614 | } |
2615 | ||
2616 | OP * | |
8ac85365 | 2617 | newGVOP(I32 type, I32 flags, GV *gv) |
79072805 | 2618 | { |
11343788 | 2619 | dTHR; |
79072805 LW |
2620 | GVOP *gvop; |
2621 | Newz(1101, gvop, 1, GVOP); | |
2622 | gvop->op_type = type; | |
22c35a8c | 2623 | gvop->op_ppaddr = PL_ppaddr[type]; |
8990e307 | 2624 | gvop->op_gv = (GV*)SvREFCNT_inc(gv); |
79072805 LW |
2625 | gvop->op_next = (OP*)gvop; |
2626 | gvop->op_flags = flags; | |
22c35a8c | 2627 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 2628 | scalar((OP*)gvop); |
22c35a8c | 2629 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 2630 | gvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2631 | return CHECKOP(type, gvop); |
79072805 LW |
2632 | } |
2633 | ||
2634 | OP * | |
8ac85365 | 2635 | newPVOP(I32 type, I32 flags, char *pv) |
79072805 LW |
2636 | { |
2637 | PVOP *pvop; | |
2638 | Newz(1101, pvop, 1, PVOP); | |
2639 | pvop->op_type = type; | |
22c35a8c | 2640 | pvop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2641 | pvop->op_pv = pv; |
2642 | pvop->op_next = (OP*)pvop; | |
2643 | pvop->op_flags = flags; | |
22c35a8c | 2644 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 2645 | scalar((OP*)pvop); |
22c35a8c | 2646 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 2647 | pvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2648 | return CHECKOP(type, pvop); |
79072805 LW |
2649 | } |
2650 | ||
79072805 | 2651 | void |
8ac85365 | 2652 | package(OP *o) |
79072805 | 2653 | { |
11343788 | 2654 | dTHR; |
93a17b20 | 2655 | SV *sv; |
79072805 | 2656 | |
3280af22 NIS |
2657 | save_hptr(&PL_curstash); |
2658 | save_item(PL_curstname); | |
11343788 | 2659 | if (o) { |
463ee0b2 LW |
2660 | STRLEN len; |
2661 | char *name; | |
11343788 | 2662 | sv = cSVOPo->op_sv; |
463ee0b2 | 2663 | name = SvPV(sv, len); |
3280af22 NIS |
2664 | PL_curstash = gv_stashpvn(name,len,TRUE); |
2665 | sv_setpvn(PL_curstname, name, len); | |
11343788 | 2666 | op_free(o); |
93a17b20 LW |
2667 | } |
2668 | else { | |
3280af22 NIS |
2669 | sv_setpv(PL_curstname,"<none>"); |
2670 | PL_curstash = Nullhv; | |
93a17b20 | 2671 | } |
7ad382f4 | 2672 | PL_hints |= HINT_BLOCK_SCOPE; |
3280af22 NIS |
2673 | PL_copline = NOLINE; |
2674 | PL_expect = XSTATE; | |
79072805 LW |
2675 | } |
2676 | ||
85e6fe83 | 2677 | void |
8ac85365 | 2678 | utilize(int aver, I32 floor, OP *version, OP *id, OP *arg) |
85e6fe83 | 2679 | { |
a0d0e21e LW |
2680 | OP *pack; |
2681 | OP *meth; | |
2682 | OP *rqop; | |
2683 | OP *imop; | |
b1cb66bf | 2684 | OP *veop; |
78ca652e | 2685 | GV *gv; |
85e6fe83 | 2686 | |
a0d0e21e LW |
2687 | if (id->op_type != OP_CONST) |
2688 | croak("Module name must be constant"); | |
85e6fe83 | 2689 | |
b1cb66bf | 2690 | veop = Nullop; |
2691 | ||
2692 | if(version != Nullop) { | |
2693 | SV *vesv = ((SVOP*)version)->op_sv; | |
2694 | ||
2695 | if (arg == Nullop && !SvNIOK(vesv)) { | |
2696 | arg = version; | |
2697 | } | |
2698 | else { | |
2699 | OP *pack; | |
2700 | OP *meth; | |
2701 | ||
2702 | if (version->op_type != OP_CONST || !SvNIOK(vesv)) | |
2703 | croak("Version number must be constant number"); | |
2704 | ||
2705 | /* Make copy of id so we don't free it twice */ | |
2706 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); | |
2707 | ||
2708 | /* Fake up a method call to VERSION */ | |
79cb57f6 | 2709 | meth = newSVOP(OP_CONST, 0, newSVpvn("VERSION", 7)); |
b1cb66bf | 2710 | veop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, |
2711 | append_elem(OP_LIST, | |
2712 | prepend_elem(OP_LIST, pack, list(version)), | |
2713 | newUNOP(OP_METHOD, 0, meth))); | |
2714 | } | |
2715 | } | |
aeea060c | 2716 | |
a0d0e21e | 2717 | /* Fake up an import/unimport */ |
4633a7c4 LW |
2718 | if (arg && arg->op_type == OP_STUB) |
2719 | imop = arg; /* no import on explicit () */ | |
b1cb66bf | 2720 | else if(SvNIOK(((SVOP*)id)->op_sv)) { |
2721 | imop = Nullop; /* use 5.0; */ | |
2722 | } | |
4633a7c4 LW |
2723 | else { |
2724 | /* Make copy of id so we don't free it twice */ | |
2725 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); | |
4633a7c4 LW |
2726 | meth = newSVOP(OP_CONST, 0, |
2727 | aver | |
79cb57f6 GS |
2728 | ? newSVpvn("import", 6) |
2729 | : newSVpvn("unimport", 8) | |
4633a7c4 LW |
2730 | ); |
2731 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, | |
a0d0e21e LW |
2732 | append_elem(OP_LIST, |
2733 | prepend_elem(OP_LIST, pack, list(arg)), | |
2734 | newUNOP(OP_METHOD, 0, meth))); | |
4633a7c4 LW |
2735 | } |
2736 | ||
78ca652e GS |
2737 | /* Fake up a require, handle override, if any */ |
2738 | gv = gv_fetchpv("require", FALSE, SVt_PVCV); | |
2739 | if (!(gv && GvIMPORTED_CV(gv))) | |
2740 | gv = gv_fetchpv("CORE::GLOBAL::require", FALSE, SVt_PVCV); | |
2741 | ||
2742 | if (gv && GvIMPORTED_CV(gv)) { | |
2743 | rqop = ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, | |
2744 | append_elem(OP_LIST, id, | |
2745 | scalar(newUNOP(OP_RV2CV, 0, | |
2746 | newGVOP(OP_GV, 0, | |
2747 | gv)))))); | |
2748 | } | |
2749 | else { | |
2750 | rqop = newUNOP(OP_REQUIRE, 0, id); | |
2751 | } | |
a0d0e21e LW |
2752 | |
2753 | /* Fake up the BEGIN {}, which does its thing immediately. */ | |
c07a80fd | 2754 | newSUB(floor, |
79cb57f6 | 2755 | newSVOP(OP_CONST, 0, newSVpvn("BEGIN", 5)), |
4633a7c4 | 2756 | Nullop, |
a0d0e21e | 2757 | append_elem(OP_LINESEQ, |
b1cb66bf | 2758 | append_elem(OP_LINESEQ, |
2759 | newSTATEOP(0, Nullch, rqop), | |
2760 | newSTATEOP(0, Nullch, veop)), | |
a0d0e21e | 2761 | newSTATEOP(0, Nullch, imop) )); |
85e6fe83 | 2762 | |
3280af22 NIS |
2763 | PL_copline = NOLINE; |
2764 | PL_expect = XSTATE; | |
85e6fe83 LW |
2765 | } |
2766 | ||
79072805 | 2767 | OP * |
78ca652e GS |
2768 | dofile(OP *term) |
2769 | { | |
2770 | OP *doop; | |
2771 | GV *gv; | |
2772 | ||
2773 | gv = gv_fetchpv("do", FALSE, SVt_PVCV); | |
2774 | if (!(gv && GvIMPORTED_CV(gv))) | |
2775 | gv = gv_fetchpv("CORE::GLOBAL::do", FALSE, SVt_PVCV); | |
2776 | ||
2777 | if (gv && GvIMPORTED_CV(gv)) { | |
2778 | doop = ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, | |
2779 | append_elem(OP_LIST, term, | |
2780 | scalar(newUNOP(OP_RV2CV, 0, | |
2781 | newGVOP(OP_GV, 0, | |
2782 | gv)))))); | |
2783 | } | |
2784 | else { | |
2785 | doop = newUNOP(OP_DOFILE, 0, scalar(term)); | |
2786 | } | |
2787 | return doop; | |
2788 | } | |
2789 | ||
2790 | OP * | |
8ac85365 | 2791 | newSLICEOP(I32 flags, OP *subscript, OP *listval) |
79072805 LW |
2792 | { |
2793 | return newBINOP(OP_LSLICE, flags, | |
8990e307 LW |
2794 | list(force_list(subscript)), |
2795 | list(force_list(listval)) ); | |
79072805 LW |
2796 | } |
2797 | ||
76e3520e | 2798 | STATIC I32 |
8ac85365 | 2799 | list_assignment(register OP *o) |
79072805 | 2800 | { |
11343788 | 2801 | if (!o) |
79072805 LW |
2802 | return TRUE; |
2803 | ||
11343788 MB |
2804 | if (o->op_type == OP_NULL && o->op_flags & OPf_KIDS) |
2805 | o = cUNOPo->op_first; | |
79072805 | 2806 | |
11343788 MB |
2807 | if (o->op_type == OP_COND_EXPR) { |
2808 | I32 t = list_assignment(cCONDOPo->op_first->op_sibling); | |
2809 | I32 f = list_assignment(cCONDOPo->op_first->op_sibling->op_sibling); | |
79072805 LW |
2810 | |
2811 | if (t && f) | |
2812 | return TRUE; | |
2813 | if (t || f) | |
2814 | yyerror("Assignment to both a list and a scalar"); | |
2815 | return FALSE; | |
2816 | } | |
2817 | ||
11343788 MB |
2818 | if (o->op_type == OP_LIST || o->op_flags & OPf_PARENS || |
2819 | o->op_type == OP_RV2AV || o->op_type == OP_RV2HV || | |
2820 | o->op_type == OP_ASLICE || o->op_type == OP_HSLICE) | |
79072805 LW |
2821 | return TRUE; |
2822 | ||
11343788 | 2823 | if (o->op_type == OP_PADAV || o->op_type == OP_PADHV) |
93a17b20 LW |
2824 | return TRUE; |
2825 | ||
11343788 | 2826 | if (o->op_type == OP_RV2SV) |
79072805 LW |
2827 | return FALSE; |
2828 | ||
2829 | return FALSE; | |
2830 | } | |
2831 | ||
2832 | OP * | |
8ac85365 | 2833 | newASSIGNOP(I32 flags, OP *left, I32 optype, OP *right) |
79072805 | 2834 | { |
11343788 | 2835 | OP *o; |
79072805 | 2836 | |
a0d0e21e LW |
2837 | if (optype) { |
2838 | if (optype == OP_ANDASSIGN || optype == OP_ORASSIGN) { | |
2839 | return newLOGOP(optype, 0, | |
2840 | mod(scalar(left), optype), | |
2841 | newUNOP(OP_SASSIGN, 0, scalar(right))); | |
2842 | } | |
2843 | else { | |
2844 | return newBINOP(optype, OPf_STACKED, | |
2845 | mod(scalar(left), optype), scalar(right)); | |
2846 | } | |
2847 | } | |
2848 | ||
79072805 | 2849 | if (list_assignment(left)) { |
6ee623d5 | 2850 | dTHR; |
3280af22 NIS |
2851 | PL_modcount = 0; |
2852 | PL_eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ | |
463ee0b2 | 2853 | left = mod(left, OP_AASSIGN); |
3280af22 NIS |
2854 | if (PL_eval_start) |
2855 | PL_eval_start = 0; | |
748a9306 | 2856 | else { |
a0d0e21e LW |
2857 | op_free(left); |
2858 | op_free(right); | |
2859 | return Nullop; | |
2860 | } | |
11343788 | 2861 | o = newBINOP(OP_AASSIGN, flags, |
8990e307 LW |
2862 | list(force_list(right)), |
2863 | list(force_list(left)) ); | |
11343788 | 2864 | o->op_private = 0 | (flags >> 8); |
a0d0e21e | 2865 | if (!(left->op_private & OPpLVAL_INTRO)) { |
79072805 | 2866 | OP *curop; |
11343788 | 2867 | OP *lastop = o; |
3280af22 | 2868 | PL_generation++; |
11343788 | 2869 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
22c35a8c | 2870 | if (PL_opargs[curop->op_type] & OA_DANGEROUS) { |
79072805 LW |
2871 | if (curop->op_type == OP_GV) { |
2872 | GV *gv = ((GVOP*)curop)->op_gv; | |
3280af22 | 2873 | if (gv == PL_defgv || SvCUR(gv) == PL_generation) |
79072805 | 2874 | break; |
3280af22 | 2875 | SvCUR(gv) = PL_generation; |
79072805 | 2876 | } |
748a9306 LW |
2877 | else if (curop->op_type == OP_PADSV || |
2878 | curop->op_type == OP_PADAV || | |
2879 | curop->op_type == OP_PADHV || | |
2880 | curop->op_type == OP_PADANY) { | |
3280af22 | 2881 | SV **svp = AvARRAY(PL_comppad_name); |
8e07c86e | 2882 | SV *sv = svp[curop->op_targ]; |
3280af22 | 2883 | if (SvCUR(sv) == PL_generation) |
748a9306 | 2884 | break; |
3280af22 | 2885 | SvCUR(sv) = PL_generation; /* (SvCUR not used any more) */ |
748a9306 | 2886 | } |
79072805 LW |
2887 | else if (curop->op_type == OP_RV2CV) |
2888 | break; | |
2889 | else if (curop->op_type == OP_RV2SV || | |
2890 | curop->op_type == OP_RV2AV || | |
2891 | curop->op_type == OP_RV2HV || | |
2892 | curop->op_type == OP_RV2GV) { | |
2893 | if (lastop->op_type != OP_GV) /* funny deref? */ | |
2894 | break; | |
2895 | } | |
1167e5da SM |
2896 | else if (curop->op_type == OP_PUSHRE) { |
2897 | if (((PMOP*)curop)->op_pmreplroot) { | |
2898 | GV *gv = (GV*)((PMOP*)curop)->op_pmreplroot; | |
3280af22 | 2899 | if (gv == PL_defgv || SvCUR(gv) == PL_generation) |
1167e5da | 2900 | break; |
3280af22 | 2901 | SvCUR(gv) = PL_generation; |
1167e5da SM |
2902 | } |
2903 | } | |
79072805 LW |
2904 | else |
2905 | break; | |
2906 | } | |
2907 | lastop = curop; | |
2908 | } | |
11343788 MB |
2909 | if (curop != o) |
2910 | o->op_private = OPpASSIGN_COMMON; | |
79072805 | 2911 | } |
c07a80fd | 2912 | if (right && right->op_type == OP_SPLIT) { |
2913 | OP* tmpop; | |
2914 | if ((tmpop = ((LISTOP*)right)->op_first) && | |
2915 | tmpop->op_type == OP_PUSHRE) | |
2916 | { | |
2917 | PMOP *pm = (PMOP*)tmpop; | |
2918 | if (left->op_type == OP_RV2AV && | |
2919 | !(left->op_private & OPpLVAL_INTRO) && | |
11343788 | 2920 | !(o->op_private & OPpASSIGN_COMMON) ) |
c07a80fd | 2921 | { |
2922 | tmpop = ((UNOP*)left)->op_first; | |
2923 | if (tmpop->op_type == OP_GV && !pm->op_pmreplroot) { | |
2924 | pm->op_pmreplroot = (OP*)((GVOP*)tmpop)->op_gv; | |
2925 | pm->op_pmflags |= PMf_ONCE; | |
11343788 | 2926 | tmpop = cUNOPo->op_first; /* to list (nulled) */ |
c07a80fd | 2927 | tmpop = ((UNOP*)tmpop)->op_first; /* to pushmark */ |
2928 | tmpop->op_sibling = Nullop; /* don't free split */ | |
2929 | right->op_next = tmpop->op_next; /* fix starting loc */ | |
11343788 | 2930 | op_free(o); /* blow off assign */ |
54310121 | 2931 | right->op_flags &= ~OPf_WANT; |
a5f75d66 | 2932 | /* "I don't know and I don't care." */ |
c07a80fd | 2933 | return right; |
2934 | } | |
2935 | } | |
2936 | else { | |
3280af22 | 2937 | if (PL_modcount < 10000 && |
c07a80fd | 2938 | ((LISTOP*)right)->op_last->op_type == OP_CONST) |
2939 | { | |
2940 | SV *sv = ((SVOP*)((LISTOP*)right)->op_last)->op_sv; | |
2941 | if (SvIVX(sv) == 0) | |
3280af22 | 2942 | sv_setiv(sv, PL_modcount+1); |
c07a80fd | 2943 | } |
2944 | } | |
2945 | } | |
2946 | } | |
11343788 | 2947 | return o; |
79072805 LW |
2948 | } |
2949 | if (!right) | |
2950 | right = newOP(OP_UNDEF, 0); | |
2951 | if (right->op_type == OP_READLINE) { | |
2952 | right->op_flags |= OPf_STACKED; | |
463ee0b2 | 2953 | return newBINOP(OP_NULL, flags, mod(scalar(left), OP_SASSIGN), scalar(right)); |
79072805 | 2954 | } |
a0d0e21e | 2955 | else { |
3280af22 | 2956 | PL_eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ |
11343788 | 2957 | o = newBINOP(OP_SASSIGN, flags, |
463ee0b2 | 2958 | scalar(right), mod(scalar(left), OP_SASSIGN) ); |
3280af22 NIS |
2959 | if (PL_eval_start) |
2960 | PL_eval_start = 0; | |
748a9306 | 2961 | else { |
11343788 | 2962 | op_free(o); |
a0d0e21e LW |
2963 | return Nullop; |
2964 | } | |
2965 | } | |
11343788 | 2966 | return o; |
79072805 LW |
2967 | } |
2968 | ||
2969 | OP * | |
8ac85365 | 2970 | newSTATEOP(I32 flags, char *label, OP *o) |
79072805 | 2971 | { |
11343788 | 2972 | dTHR; |
bbce6d69 | 2973 | U32 seq = intro_my(); |
79072805 LW |
2974 | register COP *cop; |
2975 | ||
2976 | Newz(1101, cop, 1, COP); | |
3280af22 | 2977 | if (PERLDB_LINE && PL_curcop->cop_line && PL_curstash != PL_debstash) { |
8990e307 | 2978 | cop->op_type = OP_DBSTATE; |
22c35a8c | 2979 | cop->op_ppaddr = PL_ppaddr[ OP_DBSTATE ]; |
8990e307 LW |
2980 | } |
2981 | else { | |
2982 | cop->op_type = OP_NEXTSTATE; | |
22c35a8c | 2983 | cop->op_ppaddr = PL_ppaddr[ OP_NEXTSTATE ]; |
8990e307 | 2984 | } |
79072805 | 2985 | cop->op_flags = flags; |
a0ed51b3 | 2986 | cop->op_private = (PL_hints & HINT_UTF8); |
ff0cee69 | 2987 | #ifdef NATIVE_HINTS |
2988 | cop->op_private |= NATIVE_HINTS; | |
2989 | #endif | |
e24b16f9 | 2990 | PL_compiling.op_private = cop->op_private; |
79072805 LW |
2991 | cop->op_next = (OP*)cop; |
2992 | ||
463ee0b2 LW |
2993 | if (label) { |
2994 | cop->cop_label = label; | |
3280af22 | 2995 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 2996 | } |
bbce6d69 | 2997 | cop->cop_seq = seq; |
3280af22 | 2998 | cop->cop_arybase = PL_curcop->cop_arybase; |
599cee73 PM |
2999 | if (PL_curcop->cop_warnings == WARN_NONE |
3000 | || PL_curcop->cop_warnings == WARN_ALL) | |
3001 | cop->cop_warnings = PL_curcop->cop_warnings ; | |
3002 | else | |
3003 | cop->cop_warnings = newSVsv(PL_curcop->cop_warnings) ; | |
3004 | ||
79072805 | 3005 | |
3280af22 NIS |
3006 | if (PL_copline == NOLINE) |
3007 | cop->cop_line = PL_curcop->cop_line; | |
79072805 | 3008 | else { |
3280af22 NIS |
3009 | cop->cop_line = PL_copline; |
3010 | PL_copline = NOLINE; | |
79072805 | 3011 | } |
3280af22 NIS |
3012 | cop->cop_filegv = (GV*)SvREFCNT_inc(PL_curcop->cop_filegv); |
3013 | cop->cop_stash = PL_curstash; | |
79072805 | 3014 | |
3280af22 NIS |
3015 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
3016 | SV **svp = av_fetch(GvAV(PL_curcop->cop_filegv),(I32)cop->cop_line, FALSE); | |
3017 | if (svp && *svp != &PL_sv_undef && !SvIOK(*svp)) { | |
a0d0e21e | 3018 | (void)SvIOK_on(*svp); |
a5f75d66 | 3019 | SvIVX(*svp) = 1; |
93a17b20 LW |
3020 | SvSTASH(*svp) = (HV*)cop; |
3021 | } | |
3022 | } | |
3023 | ||
11343788 | 3024 | return prepend_elem(OP_LINESEQ, (OP*)cop, o); |
79072805 LW |
3025 | } |
3026 | ||
bbce6d69 | 3027 | /* "Introduce" my variables to visible status. */ |
3028 | U32 | |
8ac85365 | 3029 | intro_my(void) |
bbce6d69 | 3030 | { |
3031 | SV **svp; | |
3032 | SV *sv; | |
3033 | I32 i; | |
3034 | ||
3280af22 NIS |
3035 | if (! PL_min_intro_pending) |
3036 | return PL_cop_seqmax; | |
bbce6d69 | 3037 | |
3280af22 NIS |
3038 | svp = AvARRAY(PL_comppad_name); |
3039 | for (i = PL_min_intro_pending; i <= PL_max_intro_pending; i++) { | |
3040 | if ((sv = svp[i]) && sv != &PL_sv_undef && !SvIVX(sv)) { | |
c53d7c7d | 3041 | SvIVX(sv) = PAD_MAX; /* Don't know scope end yet. */ |
3280af22 | 3042 | SvNVX(sv) = (double)PL_cop_seqmax; |
bbce6d69 | 3043 | } |
3044 | } | |
3280af22 NIS |
3045 | PL_min_intro_pending = 0; |
3046 | PL_comppad_name_fill = PL_max_intro_pending; /* Needn't search higher */ | |
3047 | return PL_cop_seqmax++; | |
bbce6d69 | 3048 | } |
3049 | ||
79072805 | 3050 | OP * |
8ac85365 | 3051 | newLOGOP(I32 type, I32 flags, OP *first, OP *other) |
79072805 | 3052 | { |
883ffac3 CS |
3053 | return new_logop(type, flags, &first, &other); |
3054 | } | |
3055 | ||
3bd495df | 3056 | STATIC OP * |
883ffac3 CS |
3057 | new_logop(I32 type, I32 flags, OP** firstp, OP** otherp) |
3058 | { | |
11343788 | 3059 | dTHR; |
79072805 | 3060 | LOGOP *logop; |
11343788 | 3061 | OP *o; |
883ffac3 CS |
3062 | OP *first = *firstp; |
3063 | OP *other = *otherp; | |
79072805 | 3064 | |
a0d0e21e LW |
3065 | if (type == OP_XOR) /* Not short circuit, but here by precedence. */ |
3066 | return newBINOP(type, flags, scalar(first), scalar(other)); | |
3067 | ||
8990e307 | 3068 | scalarboolean(first); |
79072805 LW |
3069 | /* optimize "!a && b" to "a || b", and "!a || b" to "a && b" */ |
3070 | if (first->op_type == OP_NOT && (first->op_flags & OPf_SPECIAL)) { | |
3071 | if (type == OP_AND || type == OP_OR) { | |
3072 | if (type == OP_AND) | |
3073 | type = OP_OR; | |
3074 | else | |
3075 | type = OP_AND; | |
11343788 | 3076 | o = first; |
883ffac3 | 3077 | first = *firstp = cUNOPo->op_first; |
11343788 MB |
3078 | if (o->op_next) |
3079 | first->op_next = o->op_next; | |
3080 | cUNOPo->op_first = Nullop; | |
3081 | op_free(o); | |
79072805 LW |
3082 | } |
3083 | } | |
3084 | if (first->op_type == OP_CONST) { | |
599cee73 PM |
3085 | if (ckWARN(WARN_PRECEDENCE) && (first->op_private & OPpCONST_BARE)) |
3086 | warner(WARN_PRECEDENCE, "Probable precedence problem on %s", | |
22c35a8c | 3087 | PL_op_desc[type]); |
79072805 LW |
3088 | if ((type == OP_AND) == (SvTRUE(((SVOP*)first)->op_sv))) { |
3089 | op_free(first); | |
883ffac3 | 3090 | *firstp = Nullop; |
79072805 LW |
3091 | return other; |
3092 | } | |
3093 | else { | |
3094 | op_free(other); | |
883ffac3 | 3095 | *otherp = Nullop; |
79072805 LW |
3096 | return first; |
3097 | } | |
3098 | } | |
3099 | else if (first->op_type == OP_WANTARRAY) { | |
3100 | if (type == OP_AND) | |
3101 | list(other); | |
3102 | else | |
3103 | scalar(other); | |
3104 | } | |
599cee73 | 3105 | else if (ckWARN(WARN_UNSAFE) && (first->op_flags & OPf_KIDS)) { |
a6006777 | 3106 | OP *k1 = ((UNOP*)first)->op_first; |
3107 | OP *k2 = k1->op_sibling; | |
3108 | OPCODE warnop = 0; | |
3109 | switch (first->op_type) | |
3110 | { | |
3111 | case OP_NULL: | |
3112 | if (k2 && k2->op_type == OP_READLINE | |
3113 | && (k2->op_flags & OPf_STACKED) | |
55d729e4 | 3114 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
a6006777 | 3115 | warnop = k2->op_type; |
3116 | break; | |
3117 | ||
3118 | case OP_SASSIGN: | |
68dc0745 | 3119 | if (k1->op_type == OP_READDIR |
3120 | || k1->op_type == OP_GLOB | |
3121 | || k1->op_type == OP_EACH) | |
a6006777 | 3122 | warnop = k1->op_type; |
3123 | break; | |
3124 | } | |
8ebc5c01 | 3125 | if (warnop) { |
3280af22 NIS |
3126 | line_t oldline = PL_curcop->cop_line; |
3127 | PL_curcop->cop_line = PL_copline; | |
599cee73 PM |
3128 | warner(WARN_UNSAFE, |
3129 | "Value of %s%s can be \"0\"; test with defined()", | |
22c35a8c | 3130 | PL_op_desc[warnop], |
68dc0745 | 3131 | ((warnop == OP_READLINE || warnop == OP_GLOB) |
3132 | ? " construct" : "() operator")); | |
3280af22 | 3133 | PL_curcop->cop_line = oldline; |
8ebc5c01 | 3134 | } |
a6006777 | 3135 | } |
79072805 LW |
3136 | |
3137 | if (!other) | |
3138 | return first; | |
3139 | ||
a0d0e21e LW |
3140 | if (type == OP_ANDASSIGN || type == OP_ORASSIGN) |
3141 | other->op_private |= OPpASSIGN_BACKWARDS; /* other is an OP_SASSIGN */ | |
3142 | ||
79072805 LW |
3143 | Newz(1101, logop, 1, LOGOP); |
3144 | ||
3145 | logop->op_type = type; | |
22c35a8c | 3146 | logop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
3147 | logop->op_first = first; |
3148 | logop->op_flags = flags | OPf_KIDS; | |
3149 | logop->op_other = LINKLIST(other); | |
c07a80fd | 3150 | logop->op_private = 1 | (flags >> 8); |
79072805 LW |
3151 | |
3152 | /* establish postfix order */ | |
3153 | logop->op_next = LINKLIST(first); | |
3154 | first->op_next = (OP*)logop; | |
3155 | first->op_sibling = other; | |
3156 | ||
11343788 MB |
3157 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
3158 | other->op_next = o; | |
79072805 | 3159 | |
11343788 | 3160 | return o; |
79072805 LW |
3161 | } |
3162 | ||
3163 | OP * | |
8ac85365 | 3164 | newCONDOP(I32 flags, OP *first, OP *trueop, OP *falseop) |
79072805 | 3165 | { |
11343788 | 3166 | dTHR; |
79072805 | 3167 | CONDOP *condop; |
11343788 | 3168 | OP *o; |
79072805 | 3169 | |
b1cb66bf | 3170 | if (!falseop) |
3171 | return newLOGOP(OP_AND, 0, first, trueop); | |
3172 | if (!trueop) | |
3173 | return newLOGOP(OP_OR, 0, first, falseop); | |
79072805 | 3174 | |
8990e307 | 3175 | scalarboolean(first); |
79072805 LW |
3176 | if (first->op_type == OP_CONST) { |
3177 | if (SvTRUE(((SVOP*)first)->op_sv)) { | |
3178 | op_free(first); | |
b1cb66bf | 3179 | op_free(falseop); |
3180 | return trueop; | |
79072805 LW |
3181 | } |
3182 | else { | |
3183 | op_free(first); | |
b1cb66bf | 3184 | op_free(trueop); |
3185 | return falseop; | |
79072805 LW |
3186 | } |
3187 | } | |
3188 | else if (first->op_type == OP_WANTARRAY) { | |
b1cb66bf | 3189 | list(trueop); |
3190 | scalar(falseop); | |
79072805 LW |
3191 | } |
3192 | Newz(1101, condop, 1, CONDOP); | |
3193 | ||
3194 | condop->op_type = OP_COND_EXPR; | |
22c35a8c | 3195 | condop->op_ppaddr = PL_ppaddr[OP_COND_EXPR]; |
79072805 LW |
3196 | condop->op_first = first; |
3197 | condop->op_flags = flags | OPf_KIDS; | |
b1cb66bf | 3198 | condop->op_true = LINKLIST(trueop); |
3199 | condop->op_false = LINKLIST(falseop); | |
c07a80fd | 3200 | condop->op_private = 1 | (flags >> 8); |
79072805 LW |
3201 | |
3202 | /* establish postfix order */ | |
3203 | condop->op_next = LINKLIST(first); | |
3204 | first->op_next = (OP*)condop; | |
3205 | ||
b1cb66bf | 3206 | first->op_sibling = trueop; |
3207 | trueop->op_sibling = falseop; | |
11343788 | 3208 | o = newUNOP(OP_NULL, 0, (OP*)condop); |
79072805 | 3209 | |
5dc0d613 MB |
3210 | trueop->op_next = o; |
3211 | falseop->op_next = o; | |
79072805 | 3212 | |
11343788 | 3213 | return o; |
79072805 LW |
3214 | } |
3215 | ||
3216 | OP * | |
8ac85365 | 3217 | newRANGE(I32 flags, OP *left, OP *right) |
79072805 | 3218 | { |
b35b2403 | 3219 | dTHR; |
79072805 LW |
3220 | CONDOP *condop; |
3221 | OP *flip; | |
3222 | OP *flop; | |
11343788 | 3223 | OP *o; |
79072805 LW |
3224 | |
3225 | Newz(1101, condop, 1, CONDOP); | |
3226 | ||
3227 | condop->op_type = OP_RANGE; | |
22c35a8c | 3228 | condop->op_ppaddr = PL_ppaddr[OP_RANGE]; |
79072805 LW |
3229 | condop->op_first = left; |
3230 | condop->op_flags = OPf_KIDS; | |
3231 | condop->op_true = LINKLIST(left); | |
3232 | condop->op_false = LINKLIST(right); | |
c07a80fd | 3233 | condop->op_private = 1 | (flags >> 8); |
79072805 LW |
3234 | |
3235 | left->op_sibling = right; | |
3236 | ||
3237 | condop->op_next = (OP*)condop; | |
3238 | flip = newUNOP(OP_FLIP, flags, (OP*)condop); | |
3239 | flop = newUNOP(OP_FLOP, 0, flip); | |
11343788 | 3240 | o = newUNOP(OP_NULL, 0, flop); |
79072805 LW |
3241 | linklist(flop); |
3242 | ||
3243 | left->op_next = flip; | |
3244 | right->op_next = flop; | |
3245 | ||
ed6116ce | 3246 | condop->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 | 3247 | sv_upgrade(PAD_SV(condop->op_targ), SVt_PVNV); |
ed6116ce | 3248 | flip->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 LW |
3249 | sv_upgrade(PAD_SV(flip->op_targ), SVt_PVNV); |
3250 | ||
3251 | flip->op_private = left->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
3252 | flop->op_private = right->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
3253 | ||
11343788 | 3254 | flip->op_next = o; |
79072805 | 3255 | if (!flip->op_private || !flop->op_private) |
11343788 | 3256 | linklist(o); /* blow off optimizer unless constant */ |
79072805 | 3257 | |
11343788 | 3258 | return o; |
79072805 LW |
3259 | } |
3260 | ||
3261 | OP * | |
8ac85365 | 3262 | newLOOPOP(I32 flags, I32 debuggable, OP *expr, OP *block) |
79072805 | 3263 | { |
11343788 | 3264 | dTHR; |
463ee0b2 | 3265 | OP* listop; |
11343788 | 3266 | OP* o; |
463ee0b2 | 3267 | int once = block && block->op_flags & OPf_SPECIAL && |
a0d0e21e | 3268 | (block->op_type == OP_ENTERSUB || block->op_type == OP_NULL); |
93a17b20 | 3269 | |
463ee0b2 LW |
3270 | if (expr) { |
3271 | if (once && expr->op_type == OP_CONST && !SvTRUE(((SVOP*)expr)->op_sv)) | |
3272 | return block; /* do {} while 0 does once */ | |
fb73857a | 3273 | if (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB |
3274 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB)) { | |
774d564b | 3275 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 3276 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 GS |
3277 | } else if (expr->op_flags & OPf_KIDS) { |
3278 | OP *k1 = ((UNOP*)expr)->op_first; | |
3279 | OP *k2 = (k1) ? k1->op_sibling : NULL; | |
3280 | switch (expr->op_type) { | |
3281 | case OP_NULL: | |
3282 | if (k2 && k2->op_type == OP_READLINE | |
3283 | && (k2->op_flags & OPf_STACKED) | |
3284 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) | |
3285 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3286 | break; | |
3287 | ||
3288 | case OP_SASSIGN: | |
3289 | if (k1->op_type == OP_READDIR | |
3290 | || k1->op_type == OP_GLOB | |
3291 | || k1->op_type == OP_EACH) | |
3292 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3293 | break; | |
3294 | } | |
774d564b | 3295 | } |
463ee0b2 | 3296 | } |
93a17b20 | 3297 | |
8990e307 | 3298 | listop = append_elem(OP_LINESEQ, block, newOP(OP_UNSTACK, 0)); |
883ffac3 | 3299 | o = new_logop(OP_AND, 0, &expr, &listop); |
463ee0b2 | 3300 | |
883ffac3 CS |
3301 | if (listop) |
3302 | ((LISTOP*)listop)->op_last->op_next = LINKLIST(o); | |
79072805 | 3303 | |
11343788 MB |
3304 | if (once && o != listop) |
3305 | o->op_next = ((LOGOP*)cUNOPo->op_first)->op_other; | |
79072805 | 3306 | |
11343788 MB |
3307 | if (o == listop) |
3308 | o = newUNOP(OP_NULL, 0, o); /* or do {} while 1 loses outer block */ | |
748a9306 | 3309 | |
11343788 MB |
3310 | o->op_flags |= flags; |
3311 | o = scope(o); | |
3312 | o->op_flags |= OPf_SPECIAL; /* suppress POPBLOCK curpm restoration*/ | |
3313 | return o; | |
79072805 LW |
3314 | } |
3315 | ||
3316 | OP * | |
8ac85365 | 3317 | newWHILEOP(I32 flags, I32 debuggable, LOOP *loop, I32 whileline, OP *expr, OP *block, OP *cont) |
79072805 | 3318 | { |
11343788 | 3319 | dTHR; |
79072805 LW |
3320 | OP *redo; |
3321 | OP *next = 0; | |
3322 | OP *listop; | |
11343788 | 3323 | OP *o; |
79072805 LW |
3324 | OP *condop; |
3325 | ||
fb73857a | 3326 | if (expr && (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB |
3327 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB))) { | |
748a9306 | 3328 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 3329 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 GS |
3330 | } else if (expr && (expr->op_flags & OPf_KIDS)) { |
3331 | OP *k1 = ((UNOP*)expr)->op_first; | |
3332 | OP *k2 = (k1) ? k1->op_sibling : NULL; | |
3333 | switch (expr->op_type) { | |
3334 | case OP_NULL: | |
3335 | if (k2 && k2->op_type == OP_READLINE | |
3336 | && (k2->op_flags & OPf_STACKED) | |
3337 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) | |
3338 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3339 | break; | |
3340 | ||
3341 | case OP_SASSIGN: | |
3342 | if (k1->op_type == OP_READDIR | |
3343 | || k1->op_type == OP_GLOB | |
3344 | || k1->op_type == OP_EACH) | |
3345 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3346 | break; | |
3347 | } | |
748a9306 | 3348 | } |
79072805 LW |
3349 | |
3350 | if (!block) | |
3351 | block = newOP(OP_NULL, 0); | |
3352 | ||
3353 | if (cont) | |
3354 | next = LINKLIST(cont); | |
fb73857a | 3355 | if (expr) { |
79072805 | 3356 | cont = append_elem(OP_LINESEQ, cont, newOP(OP_UNSTACK, 0)); |
fb73857a | 3357 | if ((line_t)whileline != NOLINE) { |
3280af22 | 3358 | PL_copline = whileline; |
fb73857a | 3359 | cont = append_elem(OP_LINESEQ, cont, |
3360 | newSTATEOP(0, Nullch, Nullop)); | |
3361 | } | |
3362 | } | |
79072805 | 3363 | |
463ee0b2 | 3364 | listop = append_list(OP_LINESEQ, (LISTOP*)block, (LISTOP*)cont); |
79072805 LW |
3365 | redo = LINKLIST(listop); |
3366 | ||
3367 | if (expr) { | |
3280af22 | 3368 | PL_copline = whileline; |
883ffac3 CS |
3369 | scalar(listop); |
3370 | o = new_logop(OP_AND, 0, &expr, &listop); | |
11343788 | 3371 | if (o == expr && o->op_type == OP_CONST && !SvTRUE(cSVOPo->op_sv)) { |
85e6fe83 | 3372 | op_free(expr); /* oops, it's a while (0) */ |
463ee0b2 | 3373 | op_free((OP*)loop); |
883ffac3 | 3374 | return Nullop; /* listop already freed by new_logop */ |
463ee0b2 | 3375 | } |
883ffac3 CS |
3376 | if (listop) |
3377 | ((LISTOP*)listop)->op_last->op_next = condop = | |
3378 | (o == listop ? redo : LINKLIST(o)); | |
79072805 LW |
3379 | if (!next) |
3380 | next = condop; | |
3381 | } | |
3382 | else | |
11343788 | 3383 | o = listop; |
79072805 LW |
3384 | |
3385 | if (!loop) { | |
3386 | Newz(1101,loop,1,LOOP); | |
3387 | loop->op_type = OP_ENTERLOOP; | |
22c35a8c | 3388 | loop->op_ppaddr = PL_ppaddr[OP_ENTERLOOP]; |
79072805 LW |
3389 | loop->op_private = 0; |
3390 | loop->op_next = (OP*)loop; | |
3391 | } | |
3392 | ||
11343788 | 3393 | o = newBINOP(OP_LEAVELOOP, 0, (OP*)loop, o); |
79072805 LW |
3394 | |
3395 | loop->op_redoop = redo; | |
11343788 | 3396 | loop->op_lastop = o; |
79072805 LW |
3397 | |
3398 | if (next) | |
3399 | loop->op_nextop = next; | |
3400 | else | |
11343788 | 3401 | loop->op_nextop = o; |
79072805 | 3402 | |
11343788 MB |
3403 | o->op_flags |= flags; |
3404 | o->op_private |= (flags >> 8); | |
3405 | return o; | |
79072805 LW |
3406 | } |
3407 | ||
3408 | OP * | |
8990e307 | 3409 | newFOROP(I32 flags,char *label,line_t forline,OP *sv,OP *expr,OP *block,OP *cont) |
79072805 LW |
3410 | { |
3411 | LOOP *loop; | |
fb73857a | 3412 | OP *wop; |
85e6fe83 | 3413 | int padoff = 0; |
4633a7c4 | 3414 | I32 iterflags = 0; |
79072805 | 3415 | |
79072805 | 3416 | if (sv) { |
85e6fe83 | 3417 | if (sv->op_type == OP_RV2SV) { /* symbol table variable */ |
748a9306 | 3418 | sv->op_type = OP_RV2GV; |
22c35a8c | 3419 | sv->op_ppaddr = PL_ppaddr[OP_RV2GV]; |
79072805 | 3420 | } |
85e6fe83 LW |
3421 | else if (sv->op_type == OP_PADSV) { /* private variable */ |
3422 | padoff = sv->op_targ; | |
3423 | op_free(sv); | |
3424 | sv = Nullop; | |
3425 | } | |
54b9620d MB |
3426 | else if (sv->op_type == OP_THREADSV) { /* per-thread variable */ |
3427 | padoff = sv->op_targ; | |
3428 | iterflags |= OPf_SPECIAL; | |
3429 | op_free(sv); | |
3430 | sv = Nullop; | |
3431 | } | |
79072805 | 3432 | else |
22c35a8c | 3433 | croak("Can't use %s for loop variable", PL_op_desc[sv->op_type]); |
79072805 LW |
3434 | } |
3435 | else { | |
54b9620d MB |
3436 | #ifdef USE_THREADS |
3437 | padoff = find_threadsv("_"); | |
3438 | iterflags |= OPf_SPECIAL; | |
3439 | #else | |
3280af22 | 3440 | sv = newGVOP(OP_GV, 0, PL_defgv); |
54b9620d | 3441 | #endif |
79072805 | 3442 | } |
5f05dabc | 3443 | if (expr->op_type == OP_RV2AV || expr->op_type == OP_PADAV) { |
89ea2908 | 3444 | expr = mod(force_list(scalar(ref(expr, OP_ITER))), OP_GREPSTART); |
4633a7c4 LW |
3445 | iterflags |= OPf_STACKED; |
3446 | } | |
89ea2908 GA |
3447 | else if (expr->op_type == OP_NULL && |
3448 | (expr->op_flags & OPf_KIDS) && | |
3449 | ((BINOP*)expr)->op_first->op_type == OP_FLOP) | |
3450 | { | |
3451 | /* Basically turn for($x..$y) into the same as for($x,$y), but we | |
3452 | * set the STACKED flag to indicate that these values are to be | |
3453 | * treated as min/max values by 'pp_iterinit'. | |
3454 | */ | |
3455 | UNOP* flip = (UNOP*)((UNOP*)((BINOP*)expr)->op_first)->op_first; | |
3456 | CONDOP* range = (CONDOP*) flip->op_first; | |
3457 | OP* left = range->op_first; | |
3458 | OP* right = left->op_sibling; | |
5152d7c7 | 3459 | LISTOP* listop; |
89ea2908 GA |
3460 | |
3461 | range->op_flags &= ~OPf_KIDS; | |
3462 | range->op_first = Nullop; | |
3463 | ||
5152d7c7 GS |
3464 | listop = (LISTOP*)newLISTOP(OP_LIST, 0, left, right); |
3465 | listop->op_first->op_next = range->op_true; | |
89ea2908 | 3466 | left->op_next = range->op_false; |
5152d7c7 GS |
3467 | right->op_next = (OP*)listop; |
3468 | listop->op_next = listop->op_first; | |
89ea2908 GA |
3469 | |
3470 | op_free(expr); | |
5152d7c7 | 3471 | expr = (OP*)(listop); |
89ea2908 GA |
3472 | null(expr); |
3473 | iterflags |= OPf_STACKED; | |
3474 | } | |
3475 | else { | |
3476 | expr = mod(force_list(expr), OP_GREPSTART); | |
3477 | } | |
3478 | ||
3479 | ||
4633a7c4 | 3480 | loop = (LOOP*)list(convert(OP_ENTERITER, iterflags, |
89ea2908 | 3481 | append_elem(OP_LIST, expr, scalar(sv)))); |
85e6fe83 LW |
3482 | assert(!loop->op_next); |
3483 | Renew(loop, 1, LOOP); | |
3484 | loop->op_targ = padoff; | |
fb73857a | 3485 | wop = newWHILEOP(flags, 1, loop, forline, newOP(OP_ITER, 0), block, cont); |
3280af22 | 3486 | PL_copline = forline; |
fb73857a | 3487 | return newSTATEOP(0, label, wop); |
79072805 LW |
3488 | } |
3489 | ||
8990e307 | 3490 | OP* |
8ac85365 | 3491 | newLOOPEX(I32 type, OP *label) |
8990e307 | 3492 | { |
11343788 MB |
3493 | dTHR; |
3494 | OP *o; | |
2d8e6c8d GS |
3495 | STRLEN n_a; |
3496 | ||
8990e307 | 3497 | if (type != OP_GOTO || label->op_type == OP_CONST) { |
cdaebead MB |
3498 | /* "last()" means "last" */ |
3499 | if (label->op_type == OP_STUB && (label->op_flags & OPf_PARENS)) | |
3500 | o = newOP(type, OPf_SPECIAL); | |
3501 | else { | |
3502 | o = newPVOP(type, 0, savepv(label->op_type == OP_CONST | |
2d8e6c8d | 3503 | ? SvPVx(((SVOP*)label)->op_sv, n_a) |
cdaebead MB |
3504 | : "")); |
3505 | } | |
8990e307 LW |
3506 | op_free(label); |
3507 | } | |
3508 | else { | |
a0d0e21e LW |
3509 | if (label->op_type == OP_ENTERSUB) |
3510 | label = newUNOP(OP_REFGEN, 0, mod(label, OP_REFGEN)); | |
11343788 | 3511 | o = newUNOP(type, OPf_STACKED, label); |
8990e307 | 3512 | } |
3280af22 | 3513 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 3514 | return o; |
8990e307 LW |
3515 | } |
3516 | ||
79072805 | 3517 | void |
8ac85365 | 3518 | cv_undef(CV *cv) |
79072805 | 3519 | { |
11343788 MB |
3520 | dTHR; |
3521 | #ifdef USE_THREADS | |
e858de61 MB |
3522 | if (CvMUTEXP(cv)) { |
3523 | MUTEX_DESTROY(CvMUTEXP(cv)); | |
3524 | Safefree(CvMUTEXP(cv)); | |
3525 | CvMUTEXP(cv) = 0; | |
3526 | } | |
11343788 MB |
3527 | #endif /* USE_THREADS */ |
3528 | ||
a0d0e21e | 3529 | if (!CvXSUB(cv) && CvROOT(cv)) { |
11343788 MB |
3530 | #ifdef USE_THREADS |
3531 | if (CvDEPTH(cv) || (CvOWNER(cv) && CvOWNER(cv) != thr)) | |
3532 | croak("Can't undef active subroutine"); | |
3533 | #else | |
a0d0e21e LW |
3534 | if (CvDEPTH(cv)) |
3535 | croak("Can't undef active subroutine"); | |
11343788 | 3536 | #endif /* USE_THREADS */ |
8990e307 | 3537 | ENTER; |
a0d0e21e | 3538 | |
3280af22 NIS |
3539 | SAVESPTR(PL_curpad); |
3540 | PL_curpad = 0; | |
a0d0e21e | 3541 | |
a5f75d66 | 3542 | if (!CvCLONED(cv)) |
748a9306 | 3543 | op_free(CvROOT(cv)); |
79072805 | 3544 | CvROOT(cv) = Nullop; |
8990e307 | 3545 | LEAVE; |
79072805 | 3546 | } |
1d5db326 | 3547 | SvPOK_off((SV*)cv); /* forget prototype */ |
44a8e56a | 3548 | CvFLAGS(cv) = 0; |
8e07c86e AD |
3549 | SvREFCNT_dec(CvGV(cv)); |
3550 | CvGV(cv) = Nullgv; | |
3551 | SvREFCNT_dec(CvOUTSIDE(cv)); | |
3552 | CvOUTSIDE(cv) = Nullcv; | |
3553 | if (CvPADLIST(cv)) { | |
8ebc5c01 | 3554 | /* may be during global destruction */ |
3555 | if (SvREFCNT(CvPADLIST(cv))) { | |
93965878 | 3556 | I32 i = AvFILLp(CvPADLIST(cv)); |
8ebc5c01 | 3557 | while (i >= 0) { |
3558 | SV** svp = av_fetch(CvPADLIST(cv), i--, FALSE); | |
46fc3d4c | 3559 | SV* sv = svp ? *svp : Nullsv; |
3560 | if (!sv) | |
3561 | continue; | |
3280af22 NIS |
3562 | if (sv == (SV*)PL_comppad_name) |
3563 | PL_comppad_name = Nullav; | |
3564 | else if (sv == (SV*)PL_comppad) { | |
3565 | PL_comppad = Nullav; | |
3566 | PL_curpad = Null(SV**); | |
46fc3d4c | 3567 | } |
3568 | SvREFCNT_dec(sv); | |
8ebc5c01 | 3569 | } |
3570 | SvREFCNT_dec((SV*)CvPADLIST(cv)); | |
8e07c86e | 3571 | } |
8e07c86e AD |
3572 | CvPADLIST(cv) = Nullav; |
3573 | } | |
79072805 LW |
3574 | } |
3575 | ||
5f05dabc | 3576 | #ifdef DEBUG_CLOSURES |
76e3520e | 3577 | STATIC void |
5f05dabc | 3578 | cv_dump(cv) |
3579 | CV* cv; | |
3580 | { | |
3581 | CV *outside = CvOUTSIDE(cv); | |
3582 | AV* padlist = CvPADLIST(cv); | |
4fdae800 | 3583 | AV* pad_name; |
3584 | AV* pad; | |
3585 | SV** pname; | |
3586 | SV** ppad; | |
5f05dabc | 3587 | I32 ix; |
3588 | ||
fb73857a | 3589 | PerlIO_printf(Perl_debug_log, "\tCV=0x%lx (%s), OUTSIDE=0x%lx (%s)\n", |
ab50184a CS |
3590 | cv, |
3591 | (CvANON(cv) ? "ANON" | |
6b88bc9c | 3592 | : (cv == PL_main_cv) ? "MAIN" |
33b8ce05 | 3593 | : CvUNIQUE(cv) ? "UNIQUE" |
44a8e56a | 3594 | : CvGV(cv) ? GvNAME(CvGV(cv)) : "UNDEFINED"), |
ab50184a CS |
3595 | outside, |
3596 | (!outside ? "null" | |
3597 | : CvANON(outside) ? "ANON" | |
6b88bc9c | 3598 | : (outside == PL_main_cv) ? "MAIN" |
07055b4c | 3599 | : CvUNIQUE(outside) ? "UNIQUE" |
44a8e56a | 3600 | : CvGV(outside) ? GvNAME(CvGV(outside)) : "UNDEFINED")); |
5f05dabc | 3601 | |
4fdae800 | 3602 | if (!padlist) |
3603 | return; | |
3604 | ||
3605 | pad_name = (AV*)*av_fetch(padlist, 0, FALSE); | |
3606 | pad = (AV*)*av_fetch(padlist, 1, FALSE); | |
3607 | pname = AvARRAY(pad_name); | |
3608 | ppad = AvARRAY(pad); | |
3609 | ||
93965878 | 3610 | for (ix = 1; ix <= AvFILLp(pad_name); ix++) { |
5f05dabc | 3611 | if (SvPOK(pname[ix])) |
fb73857a | 3612 | PerlIO_printf(Perl_debug_log, "\t%4d. 0x%lx (%s\"%s\" %ld-%ld)\n", |
4fdae800 | 3613 | ix, ppad[ix], |
3614 | SvFAKE(pname[ix]) ? "FAKE " : "", | |
3615 | SvPVX(pname[ix]), | |
ab50184a CS |
3616 | (long)I_32(SvNVX(pname[ix])), |
3617 | (long)SvIVX(pname[ix])); | |
5f05dabc | 3618 | } |
3619 | } | |
3620 | #endif /* DEBUG_CLOSURES */ | |
3621 | ||
76e3520e | 3622 | STATIC CV * |
8ac85365 | 3623 | cv_clone2(CV *proto, CV *outside) |
748a9306 | 3624 | { |
11343788 | 3625 | dTHR; |
748a9306 LW |
3626 | AV* av; |
3627 | I32 ix; | |
3628 | AV* protopadlist = CvPADLIST(proto); | |
3629 | AV* protopad_name = (AV*)*av_fetch(protopadlist, 0, FALSE); | |
3630 | AV* protopad = (AV*)*av_fetch(protopadlist, 1, FALSE); | |
5f05dabc | 3631 | SV** pname = AvARRAY(protopad_name); |
3632 | SV** ppad = AvARRAY(protopad); | |
93965878 NIS |
3633 | I32 fname = AvFILLp(protopad_name); |
3634 | I32 fpad = AvFILLp(protopad); | |
748a9306 LW |
3635 | AV* comppadlist; |
3636 | CV* cv; | |
3637 | ||
07055b4c CS |
3638 | assert(!CvUNIQUE(proto)); |
3639 | ||
748a9306 | 3640 | ENTER; |
3280af22 NIS |
3641 | SAVESPTR(PL_curpad); |
3642 | SAVESPTR(PL_comppad); | |
3643 | SAVESPTR(PL_comppad_name); | |
3644 | SAVESPTR(PL_compcv); | |
748a9306 | 3645 | |
3280af22 | 3646 | cv = PL_compcv = (CV*)NEWSV(1104,0); |
fa83b5b6 | 3647 | sv_upgrade((SV *)cv, SvTYPE(proto)); |
a5f75d66 | 3648 | CvCLONED_on(cv); |
5f05dabc | 3649 | if (CvANON(proto)) |
3650 | CvANON_on(cv); | |
748a9306 | 3651 | |
11343788 | 3652 | #ifdef USE_THREADS |
12ca11f6 | 3653 | New(666, CvMUTEXP(cv), 1, perl_mutex); |
11343788 | 3654 | MUTEX_INIT(CvMUTEXP(cv)); |
11343788 MB |
3655 | CvOWNER(cv) = 0; |
3656 | #endif /* USE_THREADS */ | |
748a9306 | 3657 | CvFILEGV(cv) = CvFILEGV(proto); |
44a8e56a | 3658 | CvGV(cv) = (GV*)SvREFCNT_inc(CvGV(proto)); |
748a9306 LW |
3659 | CvSTASH(cv) = CvSTASH(proto); |
3660 | CvROOT(cv) = CvROOT(proto); | |
3661 | CvSTART(cv) = CvSTART(proto); | |
5f05dabc | 3662 | if (outside) |
3663 | CvOUTSIDE(cv) = (CV*)SvREFCNT_inc(outside); | |
748a9306 | 3664 | |
68dc0745 | 3665 | if (SvPOK(proto)) |
3666 | sv_setpvn((SV*)cv, SvPVX(proto), SvCUR(proto)); | |
3667 | ||
3280af22 | 3668 | PL_comppad_name = newAV(); |
46fc3d4c | 3669 | for (ix = fname; ix >= 0; ix--) |
3280af22 | 3670 | av_store(PL_comppad_name, ix, SvREFCNT_inc(pname[ix])); |
748a9306 | 3671 | |
3280af22 | 3672 | PL_comppad = newAV(); |
748a9306 LW |
3673 | |
3674 | comppadlist = newAV(); | |
3675 | AvREAL_off(comppadlist); | |
3280af22 NIS |
3676 | av_store(comppadlist, 0, (SV*)PL_comppad_name); |
3677 | av_store(comppadlist, 1, (SV*)PL_comppad); | |
748a9306 | 3678 | CvPADLIST(cv) = comppadlist; |
3280af22 NIS |
3679 | av_fill(PL_comppad, AvFILLp(protopad)); |
3680 | PL_curpad = AvARRAY(PL_comppad); | |
748a9306 LW |
3681 | |
3682 | av = newAV(); /* will be @_ */ | |
3683 | av_extend(av, 0); | |
3280af22 | 3684 | av_store(PL_comppad, 0, (SV*)av); |
748a9306 LW |
3685 | AvFLAGS(av) = AVf_REIFY; |
3686 | ||
9607fc9c | 3687 | for (ix = fpad; ix > 0; ix--) { |
3688 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; | |
3280af22 | 3689 | if (namesv && namesv != &PL_sv_undef) { |
aa689395 | 3690 | char *name = SvPVX(namesv); /* XXX */ |
3691 | if (SvFLAGS(namesv) & SVf_FAKE) { /* lexical from outside? */ | |
3692 | I32 off = pad_findlex(name, ix, SvIVX(namesv), | |
2680586e | 3693 | CvOUTSIDE(cv), cxstack_ix, 0, 0); |
5f05dabc | 3694 | if (!off) |
3280af22 | 3695 | PL_curpad[ix] = SvREFCNT_inc(ppad[ix]); |
5f05dabc | 3696 | else if (off != ix) |
748a9306 LW |
3697 | croak("panic: cv_clone: %s", name); |
3698 | } | |
3699 | else { /* our own lexical */ | |
aa689395 | 3700 | SV* sv; |
5f05dabc | 3701 | if (*name == '&') { |
3702 | /* anon code -- we'll come back for it */ | |
3703 | sv = SvREFCNT_inc(ppad[ix]); | |
3704 | } | |
3705 | else if (*name == '@') | |
3706 | sv = (SV*)newAV(); | |
748a9306 | 3707 | else if (*name == '%') |
5f05dabc | 3708 | sv = (SV*)newHV(); |
748a9306 | 3709 | else |
5f05dabc | 3710 | sv = NEWSV(0,0); |
3711 | if (!SvPADBUSY(sv)) | |
3712 | SvPADMY_on(sv); | |
3280af22 | 3713 | PL_curpad[ix] = sv; |
748a9306 LW |
3714 | } |
3715 | } | |
3716 | else { | |
aa689395 | 3717 | SV* sv = NEWSV(0,0); |
748a9306 | 3718 | SvPADTMP_on(sv); |
3280af22 | 3719 | PL_curpad[ix] = sv; |
748a9306 LW |
3720 | } |
3721 | } | |
3722 | ||
5f05dabc | 3723 | /* Now that vars are all in place, clone nested closures. */ |
3724 | ||
9607fc9c | 3725 | for (ix = fpad; ix > 0; ix--) { |
3726 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; | |
aa689395 | 3727 | if (namesv |
3280af22 | 3728 | && namesv != &PL_sv_undef |
aa689395 | 3729 | && !(SvFLAGS(namesv) & SVf_FAKE) |
3730 | && *SvPVX(namesv) == '&' | |
5f05dabc | 3731 | && CvCLONE(ppad[ix])) |
3732 | { | |
3733 | CV *kid = cv_clone2((CV*)ppad[ix], cv); | |
3734 | SvREFCNT_dec(ppad[ix]); | |
3735 | CvCLONE_on(kid); | |
3736 | SvPADMY_on(kid); | |
3280af22 | 3737 | PL_curpad[ix] = (SV*)kid; |
748a9306 LW |
3738 | } |
3739 | } | |
3740 | ||
5f05dabc | 3741 | #ifdef DEBUG_CLOSURES |
ab50184a CS |
3742 | PerlIO_printf(Perl_debug_log, "Cloned inside:\n"); |
3743 | cv_dump(outside); | |
3744 | PerlIO_printf(Perl_debug_log, " from:\n"); | |
5f05dabc | 3745 | cv_dump(proto); |
ab50184a | 3746 | PerlIO_printf(Perl_debug_log, " to:\n"); |
5f05dabc | 3747 | cv_dump(cv); |
3748 | #endif | |
3749 | ||
748a9306 LW |
3750 | LEAVE; |
3751 | return cv; | |
3752 | } | |
3753 | ||
3754 | CV * | |
8ac85365 | 3755 | cv_clone(CV *proto) |
5f05dabc | 3756 | { |
b099ddc0 GS |
3757 | CV *cv; |
3758 | MUTEX_LOCK(&PL_cred_mutex); /* XXX create separate mutex */ | |
3759 | cv = cv_clone2(proto, CvOUTSIDE(proto)); | |
3760 | MUTEX_UNLOCK(&PL_cred_mutex); /* XXX create separate mutex */ | |
3761 | return cv; | |
5f05dabc | 3762 | } |
3763 | ||
3fe9a6f1 | 3764 | void |
8ac85365 | 3765 | cv_ckproto(CV *cv, GV *gv, char *p) |
3fe9a6f1 | 3766 | { |
3767 | if ((!p != !SvPOK(cv)) || (p && strNE(p, SvPVX(cv)))) { | |
46fc3d4c | 3768 | SV* msg = sv_newmortal(); |
3fe9a6f1 | 3769 | SV* name = Nullsv; |
3770 | ||
3771 | if (gv) | |
46fc3d4c | 3772 | gv_efullname3(name = sv_newmortal(), gv, Nullch); |
3773 | sv_setpv(msg, "Prototype mismatch:"); | |
3774 | if (name) | |
fc36a67e | 3775 | sv_catpvf(msg, " sub %_", name); |
3fe9a6f1 | 3776 | if (SvPOK(cv)) |
46fc3d4c | 3777 | sv_catpvf(msg, " (%s)", SvPVX(cv)); |
3778 | sv_catpv(msg, " vs "); | |
3779 | if (p) | |
3780 | sv_catpvf(msg, "(%s)", p); | |
3781 | else | |
3782 | sv_catpv(msg, "none"); | |
fc36a67e | 3783 | warn("%_", msg); |
3fe9a6f1 | 3784 | } |
3785 | } | |
3786 | ||
760ac839 | 3787 | SV * |
8ac85365 | 3788 | cv_const_sv(CV *cv) |
760ac839 | 3789 | { |
54310121 | 3790 | if (!cv || !SvPOK(cv) || SvCUR(cv)) |
3791 | return Nullsv; | |
fe5e78ed GS |
3792 | return op_const_sv(CvSTART(cv), cv); |
3793 | } | |
760ac839 | 3794 | |
fe5e78ed GS |
3795 | SV * |
3796 | op_const_sv(OP *o, CV *cv) | |
3797 | { | |
3798 | SV *sv = Nullsv; | |
3799 | ||
3800 | if(!o) | |
3801 | return Nullsv; | |
3802 | ||
3803 | if(o->op_type == OP_LINESEQ && cLISTOPo->op_first) | |
3804 | o = cLISTOPo->op_first->op_sibling; | |
3805 | ||
3806 | for (; o; o = o->op_next) { | |
54310121 | 3807 | OPCODE type = o->op_type; |
fe5e78ed GS |
3808 | |
3809 | if(sv && o->op_next == o) | |
3810 | return sv; | |
54310121 | 3811 | if (type == OP_NEXTSTATE || type == OP_NULL || type == OP_PUSHMARK) |
3812 | continue; | |
3813 | if (type == OP_LEAVESUB || type == OP_RETURN) | |
3814 | break; | |
3815 | if (sv) | |
3816 | return Nullsv; | |
3817 | if (type == OP_CONST) | |
5dc0d613 | 3818 | sv = cSVOPo->op_sv; |
fe5e78ed | 3819 | else if (type == OP_PADSV && cv) { |
e858de61 MB |
3820 | AV* padav = (AV*)(AvARRAY(CvPADLIST(cv))[1]); |
3821 | sv = padav ? AvARRAY(padav)[o->op_targ] : Nullsv; | |
5aabfad6 | 3822 | if (!sv || (!SvREADONLY(sv) && SvREFCNT(sv) > 1)) |
54310121 | 3823 | return Nullsv; |
760ac839 | 3824 | } |
54310121 | 3825 | else |
3826 | return Nullsv; | |
760ac839 | 3827 | } |
5aabfad6 | 3828 | if (sv) |
3829 | SvREADONLY_on(sv); | |
760ac839 LW |
3830 | return sv; |
3831 | } | |
3832 | ||
748a9306 | 3833 | CV * |
8ac85365 | 3834 | newSUB(I32 floor, OP *o, OP *proto, OP *block) |
79072805 | 3835 | { |
11343788 | 3836 | dTHR; |
2d8e6c8d GS |
3837 | STRLEN n_a; |
3838 | char *name = o ? SvPVx(cSVOPo->op_sv, n_a) : Nullch; | |
55d729e4 GS |
3839 | GV *gv = gv_fetchpv(name ? name : "__ANON__", |
3840 | GV_ADDMULTI | (block ? 0 : GV_NOINIT), SVt_PVCV); | |
2d8e6c8d | 3841 | char *ps = proto ? SvPVx(((SVOP*)proto)->op_sv, n_a) : Nullch; |
a2008d6d | 3842 | register CV *cv=0; |
a0d0e21e | 3843 | I32 ix; |
79072805 | 3844 | |
11343788 | 3845 | if (o) |
5dc0d613 | 3846 | SAVEFREEOP(o); |
3fe9a6f1 | 3847 | if (proto) |
3848 | SAVEFREEOP(proto); | |
3849 | ||
55d729e4 GS |
3850 | if (SvTYPE(gv) != SVt_PVGV) { /* Prototype now, and had |
3851 | maximum a prototype before. */ | |
3852 | if (SvTYPE(gv) > SVt_NULL) { | |
3853 | if (!SvPOK((SV*)gv) && !(SvIOK((SV*)gv) && SvIVX((SV*)gv) == -1)) | |
3854 | warn("Runaway prototype"); | |
3855 | cv_ckproto((CV*)gv, NULL, ps); | |
3856 | } | |
3857 | if (ps) | |
3858 | sv_setpv((SV*)gv, ps); | |
3859 | else | |
3860 | sv_setiv((SV*)gv, -1); | |
3280af22 NIS |
3861 | SvREFCNT_dec(PL_compcv); |
3862 | cv = PL_compcv = NULL; | |
3863 | PL_sub_generation++; | |
55d729e4 GS |
3864 | goto noblock; |
3865 | } | |
3866 | ||
68dc0745 | 3867 | if (!name || GvCVGEN(gv)) |
3868 | cv = Nullcv; | |
3869 | else if (cv = GvCV(gv)) { | |
3fe9a6f1 | 3870 | cv_ckproto(cv, gv, ps); |
68dc0745 | 3871 | /* already defined (or promised)? */ |
3872 | if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
3873 | SV* const_sv; | |
fe5e78ed | 3874 | bool const_changed = TRUE; |
aa689395 | 3875 | if (!block) { |
3876 | /* just a "sub foo;" when &foo is already defined */ | |
3280af22 | 3877 | SAVEFREESV(PL_compcv); |
aa689395 | 3878 | goto done; |
3879 | } | |
7bac28a0 | 3880 | /* ahem, death to those who redefine active sort subs */ |
3280af22 | 3881 | if (PL_curstackinfo->si_type == PERLSI_SORT && PL_sortcop == CvSTART(cv)) |
7bac28a0 | 3882 | croak("Can't redefine active sort subroutine %s", name); |
fe5e78ed GS |
3883 | if(const_sv = cv_const_sv(cv)) |
3884 | const_changed = sv_cmp(const_sv, op_const_sv(block, Nullcv)); | |
599cee73 PM |
3885 | if ((const_sv && const_changed) || ckWARN(WARN_REDEFINE) |
3886 | && !(CvGV(cv) && GvSTASH(CvGV(cv)) | |
2f34f9d4 IZ |
3887 | && HvNAME(GvSTASH(CvGV(cv))) |
3888 | && strEQ(HvNAME(GvSTASH(CvGV(cv))), | |
3889 | "autouse"))) { | |
3280af22 NIS |
3890 | line_t oldline = PL_curcop->cop_line; |
3891 | PL_curcop->cop_line = PL_copline; | |
599cee73 PM |
3892 | warner(WARN_REDEFINE, |
3893 | const_sv ? "Constant subroutine %s redefined" | |
3894 | : "Subroutine %s redefined", name); | |
3280af22 | 3895 | PL_curcop->cop_line = oldline; |
79072805 | 3896 | } |
8990e307 | 3897 | SvREFCNT_dec(cv); |
68dc0745 | 3898 | cv = Nullcv; |
79072805 LW |
3899 | } |
3900 | } | |
a0d0e21e | 3901 | if (cv) { /* must reuse cv if autoloaded */ |
4633a7c4 | 3902 | cv_undef(cv); |
3280af22 NIS |
3903 | CvFLAGS(cv) = CvFLAGS(PL_compcv); |
3904 | CvOUTSIDE(cv) = CvOUTSIDE(PL_compcv); | |
3905 | CvOUTSIDE(PL_compcv) = 0; | |
3906 | CvPADLIST(cv) = CvPADLIST(PL_compcv); | |
3907 | CvPADLIST(PL_compcv) = 0; | |
3908 | if (SvREFCNT(PL_compcv) > 1) /* XXX Make closures transit through stub. */ | |
3909 | CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc((SV*)cv); | |
3910 | SvREFCNT_dec(PL_compcv); | |
a0d0e21e LW |
3911 | } |
3912 | else { | |
3280af22 | 3913 | cv = PL_compcv; |
44a8e56a | 3914 | if (name) { |
3915 | GvCV(gv) = cv; | |
3916 | GvCVGEN(gv) = 0; | |
3280af22 | 3917 | PL_sub_generation++; |
44a8e56a | 3918 | } |
a0d0e21e | 3919 | } |
44a8e56a | 3920 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
3280af22 NIS |
3921 | CvFILEGV(cv) = PL_curcop->cop_filegv; |
3922 | CvSTASH(cv) = PL_curstash; | |
11343788 MB |
3923 | #ifdef USE_THREADS |
3924 | CvOWNER(cv) = 0; | |
1cfa4ec7 | 3925 | if (!CvMUTEXP(cv)) { |
f6aaf501 | 3926 | New(666, CvMUTEXP(cv), 1, perl_mutex); |
1cfa4ec7 GS |
3927 | MUTEX_INIT(CvMUTEXP(cv)); |
3928 | } | |
11343788 | 3929 | #endif /* USE_THREADS */ |
8990e307 | 3930 | |
3fe9a6f1 | 3931 | if (ps) |
3932 | sv_setpv((SV*)cv, ps); | |
4633a7c4 | 3933 | |
3280af22 | 3934 | if (PL_error_count) { |
c07a80fd | 3935 | op_free(block); |
3936 | block = Nullop; | |
68dc0745 | 3937 | if (name) { |
3938 | char *s = strrchr(name, ':'); | |
3939 | s = s ? s+1 : name; | |
6d4c2119 CS |
3940 | if (strEQ(s, "BEGIN")) { |
3941 | char *not_safe = | |
3942 | "BEGIN not safe after errors--compilation aborted"; | |
3280af22 | 3943 | if (PL_in_eval & 4) |
6d4c2119 CS |
3944 | croak(not_safe); |
3945 | else { | |
3946 | /* force display of errors found but not reported */ | |
38a03e6e | 3947 | sv_catpv(ERRSV, not_safe); |
2d8e6c8d | 3948 | croak("%s", SvPVx(ERRSV, n_a)); |
6d4c2119 CS |
3949 | } |
3950 | } | |
68dc0745 | 3951 | } |
c07a80fd | 3952 | } |
a0d0e21e | 3953 | if (!block) { |
55d729e4 | 3954 | noblock: |
3280af22 | 3955 | PL_copline = NOLINE; |
a0d0e21e LW |
3956 | LEAVE_SCOPE(floor); |
3957 | return cv; | |
3958 | } | |
3959 | ||
3280af22 NIS |
3960 | if (AvFILLp(PL_comppad_name) < AvFILLp(PL_comppad)) |
3961 | av_store(PL_comppad_name, AvFILLp(PL_comppad), Nullsv); | |
a0d0e21e | 3962 | |
54310121 | 3963 | if (CvCLONE(cv)) { |
3280af22 NIS |
3964 | SV **namep = AvARRAY(PL_comppad_name); |
3965 | for (ix = AvFILLp(PL_comppad); ix > 0; ix--) { | |
54310121 | 3966 | SV *namesv; |
3967 | ||
3280af22 | 3968 | if (SvIMMORTAL(PL_curpad[ix])) |
54310121 | 3969 | continue; |
3970 | /* | |
3971 | * The only things that a clonable function needs in its | |
3972 | * pad are references to outer lexicals and anonymous subs. | |
3973 | * The rest are created anew during cloning. | |
3974 | */ | |
3975 | if (!((namesv = namep[ix]) != Nullsv && | |
3280af22 | 3976 | namesv != &PL_sv_undef && |
54310121 | 3977 | (SvFAKE(namesv) || |
3978 | *SvPVX(namesv) == '&'))) | |
3979 | { | |
3280af22 NIS |
3980 | SvREFCNT_dec(PL_curpad[ix]); |
3981 | PL_curpad[ix] = Nullsv; | |
54310121 | 3982 | } |
3983 | } | |
a0d0e21e | 3984 | } |
54310121 | 3985 | else { |
3986 | AV *av = newAV(); /* Will be @_ */ | |
3987 | av_extend(av, 0); | |
3280af22 | 3988 | av_store(PL_comppad, 0, (SV*)av); |
54310121 | 3989 | AvFLAGS(av) = AVf_REIFY; |
79072805 | 3990 | |
3280af22 NIS |
3991 | for (ix = AvFILLp(PL_comppad); ix > 0; ix--) { |
3992 | if (SvIMMORTAL(PL_curpad[ix])) | |
54310121 | 3993 | continue; |
3280af22 NIS |
3994 | if (!SvPADMY(PL_curpad[ix])) |
3995 | SvPADTMP_on(PL_curpad[ix]); | |
54310121 | 3996 | } |
3997 | } | |
79072805 | 3998 | |
a0d0e21e | 3999 | CvROOT(cv) = newUNOP(OP_LEAVESUB, 0, scalarseq(block)); |
79072805 LW |
4000 | CvSTART(cv) = LINKLIST(CvROOT(cv)); |
4001 | CvROOT(cv)->op_next = 0; | |
4002 | peep(CvSTART(cv)); | |
93a17b20 | 4003 | |
44a8e56a | 4004 | if (name) { |
4005 | char *s; | |
4006 | ||
3280af22 | 4007 | if (PERLDB_SUBLINE && PL_curstash != PL_debstash) { |
46fc3d4c | 4008 | SV *sv = NEWSV(0,0); |
44a8e56a | 4009 | SV *tmpstr = sv_newmortal(); |
549bb64a | 4010 | GV *db_postponed = gv_fetchpv("DB::postponed", GV_ADDMULTI, SVt_PVHV); |
44a8e56a | 4011 | CV *cv; |
4012 | HV *hv; | |
4013 | ||
51790459 | 4014 | sv_setpvf(sv, "%_:%ld-%ld", |
3280af22 NIS |
4015 | GvSV(PL_curcop->cop_filegv), |
4016 | (long)PL_subline, (long)PL_curcop->cop_line); | |
44a8e56a | 4017 | gv_efullname3(tmpstr, gv, Nullch); |
3280af22 | 4018 | hv_store(GvHV(PL_DBsub), SvPVX(tmpstr), SvCUR(tmpstr), sv, 0); |
44a8e56a | 4019 | hv = GvHVn(db_postponed); |
9607fc9c | 4020 | if (HvFILL(hv) > 0 && hv_exists(hv, SvPVX(tmpstr), SvCUR(tmpstr)) |
4021 | && (cv = GvCV(db_postponed))) { | |
44a8e56a | 4022 | dSP; |
924508f0 | 4023 | PUSHMARK(SP); |
44a8e56a | 4024 | XPUSHs(tmpstr); |
4025 | PUTBACK; | |
4026 | perl_call_sv((SV*)cv, G_DISCARD); | |
4027 | } | |
4028 | } | |
79072805 | 4029 | |
44a8e56a | 4030 | if ((s = strrchr(name,':'))) |
28757baa | 4031 | s++; |
4032 | else | |
4033 | s = name; | |
68dc0745 | 4034 | if (strEQ(s, "BEGIN")) { |
3280af22 | 4035 | I32 oldscope = PL_scopestack_ix; |
28757baa | 4036 | ENTER; |
3280af22 NIS |
4037 | SAVESPTR(PL_compiling.cop_filegv); |
4038 | SAVEI16(PL_compiling.cop_line); | |
4039 | save_svref(&PL_rs); | |
4040 | sv_setsv(PL_rs, PL_nrs); | |
28757baa | 4041 | |
3280af22 NIS |
4042 | if (!PL_beginav) |
4043 | PL_beginav = newAV(); | |
28757baa | 4044 | DEBUG_x( dump_sub(gv) ); |
3280af22 | 4045 | av_push(PL_beginav, (SV *)cv); |
28757baa | 4046 | GvCV(gv) = 0; |
3280af22 | 4047 | call_list(oldscope, PL_beginav); |
a6006777 | 4048 | |
3280af22 | 4049 | PL_curcop = &PL_compiling; |
a0ed51b3 | 4050 | PL_compiling.op_private = PL_hints; |
28757baa | 4051 | LEAVE; |
4052 | } | |
3280af22 NIS |
4053 | else if (strEQ(s, "END") && !PL_error_count) { |
4054 | if (!PL_endav) | |
4055 | PL_endav = newAV(); | |
4056 | av_unshift(PL_endav, 1); | |
4057 | av_store(PL_endav, 0, (SV *)cv); | |
28757baa | 4058 | GvCV(gv) = 0; |
4059 | } | |
3280af22 NIS |
4060 | else if (strEQ(s, "INIT") && !PL_error_count) { |
4061 | if (!PL_initav) | |
4062 | PL_initav = newAV(); | |
4063 | av_push(PL_initav, SvREFCNT_inc(cv)); | |
b7aad4fe | 4064 | GvCV(gv) = 0; |
ae77835f | 4065 | } |
79072805 | 4066 | } |
a6006777 | 4067 | |
aa689395 | 4068 | done: |
3280af22 | 4069 | PL_copline = NOLINE; |
8990e307 | 4070 | LEAVE_SCOPE(floor); |
a0d0e21e | 4071 | return cv; |
79072805 LW |
4072 | } |
4073 | ||
b099ddc0 | 4074 | /* XXX unsafe for threads if eval_owner isn't held */ |
5476c433 JD |
4075 | void |
4076 | newCONSTSUB(HV *stash, char *name, SV *sv) | |
4077 | { | |
4078 | dTHR; | |
3280af22 NIS |
4079 | U32 oldhints = PL_hints; |
4080 | HV *old_cop_stash = PL_curcop->cop_stash; | |
4081 | HV *old_curstash = PL_curstash; | |
4082 | line_t oldline = PL_curcop->cop_line; | |
4083 | PL_curcop->cop_line = PL_copline; | |
5476c433 | 4084 | |
3280af22 | 4085 | PL_hints &= ~HINT_BLOCK_SCOPE; |
5476c433 | 4086 | if(stash) |
3280af22 | 4087 | PL_curstash = PL_curcop->cop_stash = stash; |
5476c433 JD |
4088 | |
4089 | newSUB( | |
be24f278 | 4090 | start_subparse(FALSE, 0), |
5476c433 | 4091 | newSVOP(OP_CONST, 0, newSVpv(name,0)), |
6b88bc9c | 4092 | newSVOP(OP_CONST, 0, &PL_sv_no), /* SvPV(&PL_sv_no) == "" -- GMB */ |
5476c433 JD |
4093 | newSTATEOP(0, Nullch, newSVOP(OP_CONST, 0, sv)) |
4094 | ); | |
4095 | ||
3280af22 NIS |
4096 | PL_hints = oldhints; |
4097 | PL_curcop->cop_stash = old_cop_stash; | |
4098 | PL_curstash = old_curstash; | |
4099 | PL_curcop->cop_line = oldline; | |
5476c433 JD |
4100 | } |
4101 | ||
57d3b86d | 4102 | CV * |
e3b8966e | 4103 | newXS(char *name, void (*subaddr) (CV * _CPERLproto), char *filename) |
a0d0e21e | 4104 | { |
11343788 | 4105 | dTHR; |
44a8e56a | 4106 | GV *gv = gv_fetchpv(name ? name : "__ANON__", GV_ADDMULTI, SVt_PVCV); |
79072805 | 4107 | register CV *cv; |
44a8e56a | 4108 | |
4109 | if (cv = (name ? GvCV(gv) : Nullcv)) { | |
4110 | if (GvCVGEN(gv)) { | |
4111 | /* just a cached method */ | |
4112 | SvREFCNT_dec(cv); | |
4113 | cv = 0; | |
4114 | } | |
4115 | else if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
4116 | /* already defined (or promised) */ | |
599cee73 | 4117 | if (ckWARN(WARN_REDEFINE) && !(CvGV(cv) && GvSTASH(CvGV(cv)) |
2f34f9d4 IZ |
4118 | && HvNAME(GvSTASH(CvGV(cv))) |
4119 | && strEQ(HvNAME(GvSTASH(CvGV(cv))), "autouse"))) { | |
3280af22 | 4120 | line_t oldline = PL_curcop->cop_line; |
51f6edd3 GS |
4121 | if (PL_copline != NOLINE) |
4122 | PL_curcop->cop_line = PL_copline; | |
599cee73 | 4123 | warner(WARN_REDEFINE, "Subroutine %s redefined",name); |
3280af22 | 4124 | PL_curcop->cop_line = oldline; |
a0d0e21e LW |
4125 | } |
4126 | SvREFCNT_dec(cv); | |
4127 | cv = 0; | |
79072805 | 4128 | } |
79072805 | 4129 | } |
44a8e56a | 4130 | |
4131 | if (cv) /* must reuse cv if autoloaded */ | |
4132 | cv_undef(cv); | |
a0d0e21e LW |
4133 | else { |
4134 | cv = (CV*)NEWSV(1105,0); | |
4135 | sv_upgrade((SV *)cv, SVt_PVCV); | |
44a8e56a | 4136 | if (name) { |
4137 | GvCV(gv) = cv; | |
4138 | GvCVGEN(gv) = 0; | |
3280af22 | 4139 | PL_sub_generation++; |
44a8e56a | 4140 | } |
a0d0e21e | 4141 | } |
5196be3e | 4142 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
11343788 | 4143 | #ifdef USE_THREADS |
12ca11f6 | 4144 | New(666, CvMUTEXP(cv), 1, perl_mutex); |
11343788 | 4145 | MUTEX_INIT(CvMUTEXP(cv)); |
11343788 MB |
4146 | CvOWNER(cv) = 0; |
4147 | #endif /* USE_THREADS */ | |
79072805 | 4148 | CvFILEGV(cv) = gv_fetchfile(filename); |
a0d0e21e | 4149 | CvXSUB(cv) = subaddr; |
44a8e56a | 4150 | |
28757baa | 4151 | if (name) { |
4152 | char *s = strrchr(name,':'); | |
4153 | if (s) | |
4154 | s++; | |
4155 | else | |
4156 | s = name; | |
4157 | if (strEQ(s, "BEGIN")) { | |
3280af22 NIS |
4158 | if (!PL_beginav) |
4159 | PL_beginav = newAV(); | |
4160 | av_push(PL_beginav, (SV *)cv); | |
44a8e56a | 4161 | GvCV(gv) = 0; |
28757baa | 4162 | } |
4163 | else if (strEQ(s, "END")) { | |
3280af22 NIS |
4164 | if (!PL_endav) |
4165 | PL_endav = newAV(); | |
4166 | av_unshift(PL_endav, 1); | |
4167 | av_store(PL_endav, 0, (SV *)cv); | |
44a8e56a | 4168 | GvCV(gv) = 0; |
28757baa | 4169 | } |
7d07dbc2 | 4170 | else if (strEQ(s, "INIT")) { |
3280af22 NIS |
4171 | if (!PL_initav) |
4172 | PL_initav = newAV(); | |
4173 | av_push(PL_initav, (SV *)cv); | |
f8f842e4 | 4174 | GvCV(gv) = 0; |
ae77835f | 4175 | } |
28757baa | 4176 | } |
8990e307 | 4177 | else |
a5f75d66 | 4178 | CvANON_on(cv); |
44a8e56a | 4179 | |
a0d0e21e | 4180 | return cv; |
79072805 LW |
4181 | } |
4182 | ||
4183 | void | |
8ac85365 | 4184 | newFORM(I32 floor, OP *o, OP *block) |
79072805 | 4185 | { |
11343788 | 4186 | dTHR; |
79072805 LW |
4187 | register CV *cv; |
4188 | char *name; | |
4189 | GV *gv; | |
a0d0e21e | 4190 | I32 ix; |
2d8e6c8d | 4191 | STRLEN n_a; |
79072805 | 4192 | |
11343788 | 4193 | if (o) |
2d8e6c8d | 4194 | name = SvPVx(cSVOPo->op_sv, n_a); |
79072805 LW |
4195 | else |
4196 | name = "STDOUT"; | |
85e6fe83 | 4197 | gv = gv_fetchpv(name,TRUE, SVt_PVFM); |
a5f75d66 | 4198 | GvMULTI_on(gv); |
79072805 | 4199 | if (cv = GvFORM(gv)) { |
599cee73 | 4200 | if (ckWARN(WARN_REDEFINE)) { |
3280af22 | 4201 | line_t oldline = PL_curcop->cop_line; |
79072805 | 4202 | |
3280af22 | 4203 | PL_curcop->cop_line = PL_copline; |
599cee73 | 4204 | warner(WARN_REDEFINE, "Format %s redefined",name); |
3280af22 | 4205 | PL_curcop->cop_line = oldline; |
79072805 | 4206 | } |
8990e307 | 4207 | SvREFCNT_dec(cv); |
79072805 | 4208 | } |
3280af22 | 4209 | cv = PL_compcv; |
79072805 | 4210 | GvFORM(gv) = cv; |
44a8e56a | 4211 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
3280af22 | 4212 | CvFILEGV(cv) = PL_curcop->cop_filegv; |
79072805 | 4213 | |
3280af22 NIS |
4214 | for (ix = AvFILLp(PL_comppad); ix > 0; ix--) { |
4215 | if (!SvPADMY(PL_curpad[ix]) && !SvIMMORTAL(PL_curpad[ix])) | |
4216 | SvPADTMP_on(PL_curpad[ix]); | |
a0d0e21e LW |
4217 | } |
4218 | ||
79072805 LW |
4219 | CvROOT(cv) = newUNOP(OP_LEAVEWRITE, 0, scalarseq(block)); |
4220 | CvSTART(cv) = LINKLIST(CvROOT(cv)); | |
4221 | CvROOT(cv)->op_next = 0; | |
4222 | peep(CvSTART(cv)); | |
11343788 | 4223 | op_free(o); |
3280af22 | 4224 | PL_copline = NOLINE; |
8990e307 | 4225 | LEAVE_SCOPE(floor); |
79072805 LW |
4226 | } |
4227 | ||
4228 | OP * | |
8ac85365 | 4229 | newANONLIST(OP *o) |
79072805 | 4230 | { |
93a17b20 | 4231 | return newUNOP(OP_REFGEN, 0, |
11343788 | 4232 | mod(list(convert(OP_ANONLIST, 0, o)), OP_REFGEN)); |
79072805 LW |
4233 | } |
4234 | ||
4235 | OP * | |
8ac85365 | 4236 | newANONHASH(OP *o) |
79072805 | 4237 | { |
93a17b20 | 4238 | return newUNOP(OP_REFGEN, 0, |
11343788 | 4239 | mod(list(convert(OP_ANONHASH, 0, o)), OP_REFGEN)); |
a0d0e21e LW |
4240 | } |
4241 | ||
4242 | OP * | |
8ac85365 | 4243 | newANONSUB(I32 floor, OP *proto, OP *block) |
a0d0e21e LW |
4244 | { |
4245 | return newUNOP(OP_REFGEN, 0, | |
4633a7c4 | 4246 | newSVOP(OP_ANONCODE, 0, (SV*)newSUB(floor, 0, proto, block))); |
79072805 LW |
4247 | } |
4248 | ||
4249 | OP * | |
8ac85365 | 4250 | oopsAV(OP *o) |
79072805 | 4251 | { |
ed6116ce LW |
4252 | switch (o->op_type) { |
4253 | case OP_PADSV: | |
4254 | o->op_type = OP_PADAV; | |
22c35a8c | 4255 | o->op_ppaddr = PL_ppaddr[OP_PADAV]; |
51e247a3 | 4256 | return ref(o, OP_RV2AV); |
ed6116ce LW |
4257 | |
4258 | case OP_RV2SV: | |
79072805 | 4259 | o->op_type = OP_RV2AV; |
22c35a8c | 4260 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
79072805 | 4261 | ref(o, OP_RV2AV); |
ed6116ce LW |
4262 | break; |
4263 | ||
4264 | default: | |
79072805 | 4265 | warn("oops: oopsAV"); |
ed6116ce LW |
4266 | break; |
4267 | } | |
79072805 LW |
4268 | return o; |
4269 | } | |
4270 | ||
4271 | OP * | |
8ac85365 | 4272 | oopsHV(OP *o) |
79072805 | 4273 | { |
ed6116ce LW |
4274 | switch (o->op_type) { |
4275 | case OP_PADSV: | |
4276 | case OP_PADAV: | |
4277 | o->op_type = OP_PADHV; | |
22c35a8c | 4278 | o->op_ppaddr = PL_ppaddr[OP_PADHV]; |
51e247a3 | 4279 | return ref(o, OP_RV2HV); |
ed6116ce LW |
4280 | |
4281 | case OP_RV2SV: | |
4282 | case OP_RV2AV: | |
79072805 | 4283 | o->op_type = OP_RV2HV; |
22c35a8c | 4284 | o->op_ppaddr = PL_ppaddr[OP_RV2HV]; |
79072805 | 4285 | ref(o, OP_RV2HV); |
ed6116ce LW |
4286 | break; |
4287 | ||
4288 | default: | |
79072805 | 4289 | warn("oops: oopsHV"); |
ed6116ce LW |
4290 | break; |
4291 | } | |
79072805 LW |
4292 | return o; |
4293 | } | |
4294 | ||
4295 | OP * | |
8ac85365 | 4296 | newAVREF(OP *o) |
79072805 | 4297 | { |
ed6116ce LW |
4298 | if (o->op_type == OP_PADANY) { |
4299 | o->op_type = OP_PADAV; | |
22c35a8c | 4300 | o->op_ppaddr = PL_ppaddr[OP_PADAV]; |
93a17b20 | 4301 | return o; |
ed6116ce | 4302 | } |
79072805 LW |
4303 | return newUNOP(OP_RV2AV, 0, scalar(o)); |
4304 | } | |
4305 | ||
4306 | OP * | |
8ac85365 | 4307 | newGVREF(I32 type, OP *o) |
79072805 | 4308 | { |
82092f1d | 4309 | if (type == OP_MAPSTART || type == OP_GREPSTART || type == OP_SORT) |
a0d0e21e | 4310 | return newUNOP(OP_NULL, 0, o); |
748a9306 | 4311 | return ref(newUNOP(OP_RV2GV, OPf_REF, o), type); |
79072805 LW |
4312 | } |
4313 | ||
4314 | OP * | |
8ac85365 | 4315 | newHVREF(OP *o) |
79072805 | 4316 | { |
ed6116ce LW |
4317 | if (o->op_type == OP_PADANY) { |
4318 | o->op_type = OP_PADHV; | |
22c35a8c | 4319 | o->op_ppaddr = PL_ppaddr[OP_PADHV]; |
93a17b20 | 4320 | return o; |
ed6116ce | 4321 | } |
79072805 LW |
4322 | return newUNOP(OP_RV2HV, 0, scalar(o)); |
4323 | } | |
4324 | ||
4325 | OP * | |
8ac85365 | 4326 | oopsCV(OP *o) |
79072805 | 4327 | { |
463ee0b2 | 4328 | croak("NOT IMPL LINE %d",__LINE__); |
79072805 LW |
4329 | /* STUB */ |
4330 | return o; | |
4331 | } | |
4332 | ||
4333 | OP * | |
8ac85365 | 4334 | newCVREF(I32 flags, OP *o) |
79072805 | 4335 | { |
c07a80fd | 4336 | return newUNOP(OP_RV2CV, flags, scalar(o)); |
79072805 LW |
4337 | } |
4338 | ||
4339 | OP * | |
8ac85365 | 4340 | newSVREF(OP *o) |
79072805 | 4341 | { |
ed6116ce LW |
4342 | if (o->op_type == OP_PADANY) { |
4343 | o->op_type = OP_PADSV; | |
22c35a8c | 4344 | o->op_ppaddr = PL_ppaddr[OP_PADSV]; |
93a17b20 | 4345 | return o; |
ed6116ce | 4346 | } |
224a4551 MB |
4347 | else if (o->op_type == OP_THREADSV && !(o->op_flags & OPpDONE_SVREF)) { |
4348 | o->op_flags |= OPpDONE_SVREF; | |
a863c7d1 | 4349 | return o; |
224a4551 | 4350 | } |
79072805 LW |
4351 | return newUNOP(OP_RV2SV, 0, scalar(o)); |
4352 | } | |
4353 | ||
4354 | /* Check routines. */ | |
4355 | ||
4356 | OP * | |
8ac85365 | 4357 | ck_anoncode(OP *o) |
5f05dabc | 4358 | { |
178c6305 CS |
4359 | PADOFFSET ix; |
4360 | SV* name; | |
4361 | ||
4362 | name = NEWSV(1106,0); | |
4363 | sv_upgrade(name, SVt_PVNV); | |
4364 | sv_setpvn(name, "&", 1); | |
4365 | SvIVX(name) = -1; | |
4366 | SvNVX(name) = 1; | |
5dc0d613 | 4367 | ix = pad_alloc(o->op_type, SVs_PADMY); |
3280af22 NIS |
4368 | av_store(PL_comppad_name, ix, name); |
4369 | av_store(PL_comppad, ix, cSVOPo->op_sv); | |
5dc0d613 MB |
4370 | SvPADMY_on(cSVOPo->op_sv); |
4371 | cSVOPo->op_sv = Nullsv; | |
4372 | cSVOPo->op_targ = ix; | |
4373 | return o; | |
5f05dabc | 4374 | } |
4375 | ||
4376 | OP * | |
8ac85365 | 4377 | ck_bitop(OP *o) |
55497cff | 4378 | { |
3280af22 | 4379 | o->op_private = PL_hints; |
5dc0d613 | 4380 | return o; |
55497cff | 4381 | } |
4382 | ||
4383 | OP * | |
8ac85365 | 4384 | ck_concat(OP *o) |
79072805 | 4385 | { |
11343788 MB |
4386 | if (cUNOPo->op_first->op_type == OP_CONCAT) |
4387 | o->op_flags |= OPf_STACKED; | |
4388 | return o; | |
79072805 LW |
4389 | } |
4390 | ||
4391 | OP * | |
8ac85365 | 4392 | ck_spair(OP *o) |
79072805 | 4393 | { |
11343788 | 4394 | if (o->op_flags & OPf_KIDS) { |
79072805 | 4395 | OP* newop; |
a0d0e21e | 4396 | OP* kid; |
5dc0d613 MB |
4397 | OPCODE type = o->op_type; |
4398 | o = modkids(ck_fun(o), type); | |
11343788 | 4399 | kid = cUNOPo->op_first; |
a0d0e21e LW |
4400 | newop = kUNOP->op_first->op_sibling; |
4401 | if (newop && | |
4402 | (newop->op_sibling || | |
22c35a8c | 4403 | !(PL_opargs[newop->op_type] & OA_RETSCALAR) || |
a0d0e21e LW |
4404 | newop->op_type == OP_PADAV || newop->op_type == OP_PADHV || |
4405 | newop->op_type == OP_RV2AV || newop->op_type == OP_RV2HV)) { | |
aeea060c | 4406 | |
11343788 | 4407 | return o; |
a0d0e21e LW |
4408 | } |
4409 | op_free(kUNOP->op_first); | |
4410 | kUNOP->op_first = newop; | |
4411 | } | |
22c35a8c | 4412 | o->op_ppaddr = PL_ppaddr[++o->op_type]; |
11343788 | 4413 | return ck_fun(o); |
a0d0e21e LW |
4414 | } |
4415 | ||
4416 | OP * | |
8ac85365 | 4417 | ck_delete(OP *o) |
a0d0e21e | 4418 | { |
11343788 | 4419 | o = ck_fun(o); |
5dc0d613 | 4420 | o->op_private = 0; |
11343788 MB |
4421 | if (o->op_flags & OPf_KIDS) { |
4422 | OP *kid = cUNOPo->op_first; | |
5f05dabc | 4423 | if (kid->op_type == OP_HSLICE) |
5dc0d613 | 4424 | o->op_private |= OPpSLICE; |
5f05dabc | 4425 | else if (kid->op_type != OP_HELEM) |
4426 | croak("%s argument is not a HASH element or slice", | |
22c35a8c | 4427 | PL_op_desc[o->op_type]); |
a0d0e21e | 4428 | null(kid); |
79072805 | 4429 | } |
11343788 | 4430 | return o; |
79072805 LW |
4431 | } |
4432 | ||
4433 | OP * | |
8ac85365 | 4434 | ck_eof(OP *o) |
79072805 | 4435 | { |
11343788 | 4436 | I32 type = o->op_type; |
79072805 | 4437 | |
11343788 MB |
4438 | if (o->op_flags & OPf_KIDS) { |
4439 | if (cLISTOPo->op_first->op_type == OP_STUB) { | |
4440 | op_free(o); | |
4441 | o = newUNOP(type, OPf_SPECIAL, | |
d58bf5aa | 4442 | newGVOP(OP_GV, 0, gv_fetchpv("main::ARGV", TRUE, SVt_PVAV))); |
8990e307 | 4443 | } |
11343788 | 4444 | return ck_fun(o); |
79072805 | 4445 | } |
11343788 | 4446 | return o; |
79072805 LW |
4447 | } |
4448 | ||
4449 | OP * | |
8ac85365 | 4450 | ck_eval(OP *o) |
79072805 | 4451 | { |
3280af22 | 4452 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 MB |
4453 | if (o->op_flags & OPf_KIDS) { |
4454 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 | 4455 | |
93a17b20 | 4456 | if (!kid) { |
11343788 MB |
4457 | o->op_flags &= ~OPf_KIDS; |
4458 | null(o); | |
79072805 LW |
4459 | } |
4460 | else if (kid->op_type == OP_LINESEQ) { | |
4461 | LOGOP *enter; | |
4462 | ||
11343788 MB |
4463 | kid->op_next = o->op_next; |
4464 | cUNOPo->op_first = 0; | |
4465 | op_free(o); | |
79072805 LW |
4466 | |
4467 | Newz(1101, enter, 1, LOGOP); | |
4468 | enter->op_type = OP_ENTERTRY; | |
22c35a8c | 4469 | enter->op_ppaddr = PL_ppaddr[OP_ENTERTRY]; |
79072805 LW |
4470 | enter->op_private = 0; |
4471 | ||
4472 | /* establish postfix order */ | |
4473 | enter->op_next = (OP*)enter; | |
4474 | ||
11343788 MB |
4475 | o = prepend_elem(OP_LINESEQ, (OP*)enter, (OP*)kid); |
4476 | o->op_type = OP_LEAVETRY; | |
22c35a8c | 4477 | o->op_ppaddr = PL_ppaddr[OP_LEAVETRY]; |
11343788 MB |
4478 | enter->op_other = o; |
4479 | return o; | |
79072805 | 4480 | } |
c7cc6f1c | 4481 | else |
473986ff | 4482 | scalar((OP*)kid); |
79072805 LW |
4483 | } |
4484 | else { | |
11343788 | 4485 | op_free(o); |
54b9620d | 4486 | o = newUNOP(OP_ENTEREVAL, 0, newDEFSVOP()); |
79072805 | 4487 | } |
3280af22 | 4488 | o->op_targ = (PADOFFSET)PL_hints; |
11343788 | 4489 | return o; |
79072805 LW |
4490 | } |
4491 | ||
4492 | OP * | |
8ac85365 | 4493 | ck_exec(OP *o) |
79072805 LW |
4494 | { |
4495 | OP *kid; | |
11343788 MB |
4496 | if (o->op_flags & OPf_STACKED) { |
4497 | o = ck_fun(o); | |
4498 | kid = cUNOPo->op_first->op_sibling; | |
8990e307 LW |
4499 | if (kid->op_type == OP_RV2GV) |
4500 | null(kid); | |
79072805 | 4501 | } |
463ee0b2 | 4502 | else |
11343788 MB |
4503 | o = listkids(o); |
4504 | return o; | |
79072805 LW |
4505 | } |
4506 | ||
4507 | OP * | |
8ac85365 | 4508 | ck_exists(OP *o) |
5f05dabc | 4509 | { |
5196be3e MB |
4510 | o = ck_fun(o); |
4511 | if (o->op_flags & OPf_KIDS) { | |
4512 | OP *kid = cUNOPo->op_first; | |
5f05dabc | 4513 | if (kid->op_type != OP_HELEM) |
22c35a8c | 4514 | croak("%s argument is not a HASH element", PL_op_desc[o->op_type]); |
5f05dabc | 4515 | null(kid); |
4516 | } | |
5196be3e | 4517 | return o; |
5f05dabc | 4518 | } |
4519 | ||
22c35a8c | 4520 | #if 0 |
5f05dabc | 4521 | OP * |
8ac85365 | 4522 | ck_gvconst(register OP *o) |
79072805 LW |
4523 | { |
4524 | o = fold_constants(o); | |
4525 | if (o->op_type == OP_CONST) | |
4526 | o->op_type = OP_GV; | |
4527 | return o; | |
4528 | } | |
22c35a8c | 4529 | #endif |
79072805 LW |
4530 | |
4531 | OP * | |
8ac85365 | 4532 | ck_rvconst(register OP *o) |
79072805 | 4533 | { |
11343788 MB |
4534 | dTHR; |
4535 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
85e6fe83 | 4536 | |
3280af22 | 4537 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
79072805 | 4538 | if (kid->op_type == OP_CONST) { |
44a8e56a | 4539 | char *name; |
4540 | int iscv; | |
4541 | GV *gv; | |
779c5bc9 | 4542 | SV *kidsv = kid->op_sv; |
2d8e6c8d | 4543 | STRLEN n_a; |
44a8e56a | 4544 | |
779c5bc9 GS |
4545 | /* Is it a constant from cv_const_sv()? */ |
4546 | if (SvROK(kidsv) && SvREADONLY(kidsv)) { | |
4547 | SV *rsv = SvRV(kidsv); | |
4548 | int svtype = SvTYPE(rsv); | |
4549 | char *badtype = Nullch; | |
4550 | ||
4551 | switch (o->op_type) { | |
4552 | case OP_RV2SV: | |
4553 | if (svtype > SVt_PVMG) | |
4554 | badtype = "a SCALAR"; | |
4555 | break; | |
4556 | case OP_RV2AV: | |
4557 | if (svtype != SVt_PVAV) | |
4558 | badtype = "an ARRAY"; | |
4559 | break; | |
4560 | case OP_RV2HV: | |
4561 | if (svtype != SVt_PVHV) { | |
4562 | if (svtype == SVt_PVAV) { /* pseudohash? */ | |
4563 | SV **ksv = av_fetch((AV*)rsv, 0, FALSE); | |
4564 | if (ksv && SvROK(*ksv) | |
4565 | && SvTYPE(SvRV(*ksv)) == SVt_PVHV) | |
4566 | { | |
4567 | break; | |
4568 | } | |
4569 | } | |
4570 | badtype = "a HASH"; | |
4571 | } | |
4572 | break; | |
4573 | case OP_RV2CV: | |
4574 | if (svtype != SVt_PVCV) | |
4575 | badtype = "a CODE"; | |
4576 | break; | |
4577 | } | |
4578 | if (badtype) | |
4579 | croak("Constant is not %s reference", badtype); | |
4580 | return o; | |
4581 | } | |
2d8e6c8d | 4582 | name = SvPV(kidsv, n_a); |
3280af22 | 4583 | if ((PL_hints & HINT_STRICT_REFS) && (kid->op_private & OPpCONST_BARE)) { |
44a8e56a | 4584 | char *badthing = Nullch; |
5dc0d613 | 4585 | switch (o->op_type) { |
44a8e56a | 4586 | case OP_RV2SV: |
4587 | badthing = "a SCALAR"; | |
4588 | break; | |
4589 | case OP_RV2AV: | |
4590 | badthing = "an ARRAY"; | |
4591 | break; | |
4592 | case OP_RV2HV: | |
4593 | badthing = "a HASH"; | |
4594 | break; | |
4595 | } | |
4596 | if (badthing) | |
4597 | croak( | |
4598 | "Can't use bareword (\"%s\") as %s ref while \"strict refs\" in use", | |
4599 | name, badthing); | |
4600 | } | |
93233ece CS |
4601 | /* |
4602 | * This is a little tricky. We only want to add the symbol if we | |
4603 | * didn't add it in the lexer. Otherwise we get duplicate strict | |
4604 | * warnings. But if we didn't add it in the lexer, we must at | |
4605 | * least pretend like we wanted to add it even if it existed before, | |
4606 | * or we get possible typo warnings. OPpCONST_ENTERED says | |
4607 | * whether the lexer already added THIS instance of this symbol. | |
4608 | */ | |
5196be3e | 4609 | iscv = (o->op_type == OP_RV2CV) * 2; |
93233ece | 4610 | do { |
44a8e56a | 4611 | gv = gv_fetchpv(name, |
748a9306 | 4612 | iscv | !(kid->op_private & OPpCONST_ENTERED), |
a0d0e21e LW |
4613 | iscv |
4614 | ? SVt_PVCV | |
11343788 | 4615 | : o->op_type == OP_RV2SV |
a0d0e21e | 4616 | ? SVt_PV |
11343788 | 4617 | : o->op_type == OP_RV2AV |
a0d0e21e | 4618 | ? SVt_PVAV |
11343788 | 4619 | : o->op_type == OP_RV2HV |
a0d0e21e LW |
4620 | ? SVt_PVHV |
4621 | : SVt_PVGV); | |
93233ece CS |
4622 | } while (!gv && !(kid->op_private & OPpCONST_ENTERED) && !iscv++); |
4623 | if (gv) { | |
4624 | kid->op_type = OP_GV; | |
4625 | SvREFCNT_dec(kid->op_sv); | |
4626 | kid->op_sv = SvREFCNT_inc(gv); | |
a0d0e21e | 4627 | } |
79072805 | 4628 | } |
11343788 | 4629 | return o; |
79072805 LW |
4630 | } |
4631 | ||
4632 | OP * | |
8ac85365 | 4633 | ck_ftst(OP *o) |
79072805 | 4634 | { |
11343788 MB |
4635 | dTHR; |
4636 | I32 type = o->op_type; | |
79072805 | 4637 | |
11343788 MB |
4638 | if (o->op_flags & OPf_REF) |
4639 | return o; | |
79072805 | 4640 | |
108ed793 | 4641 | if (o->op_flags & OPf_KIDS && cUNOPo->op_first->op_type != OP_STUB) { |
11343788 | 4642 | SVOP *kid = (SVOP*)cUNOPo->op_first; |
79072805 LW |
4643 | |
4644 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
2d8e6c8d | 4645 | STRLEN n_a; |
a0d0e21e | 4646 | OP *newop = newGVOP(type, OPf_REF, |
2d8e6c8d | 4647 | gv_fetchpv(SvPVx(kid->op_sv, n_a), TRUE, SVt_PVIO)); |
11343788 | 4648 | op_free(o); |
79072805 LW |
4649 | return newop; |
4650 | } | |
4651 | } | |
4652 | else { | |
11343788 | 4653 | op_free(o); |
79072805 | 4654 | if (type == OP_FTTTY) |
fb73857a | 4655 | return newGVOP(type, OPf_REF, gv_fetchpv("main::STDIN", TRUE, |
85e6fe83 | 4656 | SVt_PVIO)); |
79072805 | 4657 | else |
54b9620d | 4658 | return newUNOP(type, 0, newDEFSVOP()); |
79072805 | 4659 | } |
11343788 | 4660 | return o; |
79072805 LW |
4661 | } |
4662 | ||
4663 | OP * | |
8ac85365 | 4664 | ck_fun(OP *o) |
79072805 | 4665 | { |
11343788 | 4666 | dTHR; |
79072805 LW |
4667 | register OP *kid; |
4668 | OP **tokid; | |
4669 | OP *sibl; | |
4670 | I32 numargs = 0; | |
11343788 | 4671 | int type = o->op_type; |
22c35a8c | 4672 | register I32 oa = PL_opargs[type] >> OASHIFT; |
aeea060c | 4673 | |
11343788 | 4674 | if (o->op_flags & OPf_STACKED) { |
79072805 LW |
4675 | if ((oa & OA_OPTIONAL) && (oa >> 4) && !((oa >> 4) & OA_OPTIONAL)) |
4676 | oa &= ~OA_OPTIONAL; | |
4677 | else | |
11343788 | 4678 | return no_fh_allowed(o); |
79072805 LW |
4679 | } |
4680 | ||
11343788 | 4681 | if (o->op_flags & OPf_KIDS) { |
2d8e6c8d | 4682 | STRLEN n_a; |
11343788 MB |
4683 | tokid = &cLISTOPo->op_first; |
4684 | kid = cLISTOPo->op_first; | |
8990e307 LW |
4685 | if (kid->op_type == OP_PUSHMARK || |
4686 | kid->op_type == OP_NULL && kid->op_targ == OP_PUSHMARK) | |
4687 | { | |
79072805 LW |
4688 | tokid = &kid->op_sibling; |
4689 | kid = kid->op_sibling; | |
4690 | } | |
22c35a8c | 4691 | if (!kid && PL_opargs[type] & OA_DEFGV) |
54b9620d | 4692 | *tokid = kid = newDEFSVOP(); |
79072805 LW |
4693 | |
4694 | while (oa && kid) { | |
4695 | numargs++; | |
4696 | sibl = kid->op_sibling; | |
4697 | switch (oa & 7) { | |
4698 | case OA_SCALAR: | |
62c18ce2 GS |
4699 | /* list seen where single (scalar) arg expected? */ |
4700 | if (numargs == 1 && !(oa >> 4) | |
4701 | && kid->op_type == OP_LIST && type != OP_SCALAR) | |
4702 | { | |
4703 | return too_many_arguments(o,PL_op_desc[type]); | |
4704 | } | |
79072805 LW |
4705 | scalar(kid); |
4706 | break; | |
4707 | case OA_LIST: | |
4708 | if (oa < 16) { | |
4709 | kid = 0; | |
4710 | continue; | |
4711 | } | |
4712 | else | |
4713 | list(kid); | |
4714 | break; | |
4715 | case OA_AVREF: | |
4716 | if (kid->op_type == OP_CONST && | |
62c18ce2 GS |
4717 | (kid->op_private & OPpCONST_BARE)) |
4718 | { | |
2d8e6c8d | 4719 | char *name = SvPVx(((SVOP*)kid)->op_sv, n_a); |
79072805 | 4720 | OP *newop = newAVREF(newGVOP(OP_GV, 0, |
85e6fe83 | 4721 | gv_fetchpv(name, TRUE, SVt_PVAV) )); |
599cee73 PM |
4722 | if (ckWARN(WARN_SYNTAX)) |
4723 | warner(WARN_SYNTAX, | |
4724 | "Array @%s missing the @ in argument %ld of %s()", | |
22c35a8c | 4725 | name, (long)numargs, PL_op_desc[type]); |
79072805 LW |
4726 | op_free(kid); |
4727 | kid = newop; | |
4728 | kid->op_sibling = sibl; | |
4729 | *tokid = kid; | |
4730 | } | |
8990e307 | 4731 | else if (kid->op_type != OP_RV2AV && kid->op_type != OP_PADAV) |
35cd451c | 4732 | bad_type(numargs, "array", PL_op_desc[type], kid); |
a0d0e21e | 4733 | mod(kid, type); |
79072805 LW |
4734 | break; |
4735 | case OA_HVREF: | |
4736 | if (kid->op_type == OP_CONST && | |
62c18ce2 GS |
4737 | (kid->op_private & OPpCONST_BARE)) |
4738 | { | |
2d8e6c8d | 4739 | char *name = SvPVx(((SVOP*)kid)->op_sv, n_a); |
79072805 | 4740 | OP *newop = newHVREF(newGVOP(OP_GV, 0, |
85e6fe83 | 4741 | gv_fetchpv(name, TRUE, SVt_PVHV) )); |
599cee73 PM |
4742 | if (ckWARN(WARN_SYNTAX)) |
4743 | warner(WARN_SYNTAX, | |
4744 | "Hash %%%s missing the %% in argument %ld of %s()", | |
22c35a8c | 4745 | name, (long)numargs, PL_op_desc[type]); |
79072805 LW |
4746 | op_free(kid); |
4747 | kid = newop; | |
4748 | kid->op_sibling = sibl; | |
4749 | *tokid = kid; | |
4750 | } | |
8990e307 | 4751 | else if (kid->op_type != OP_RV2HV && kid->op_type != OP_PADHV) |
35cd451c | 4752 | bad_type(numargs, "hash", PL_op_desc[type], kid); |
a0d0e21e | 4753 | mod(kid, type); |
79072805 LW |
4754 | break; |
4755 | case OA_CVREF: | |
4756 | { | |
a0d0e21e | 4757 | OP *newop = newUNOP(OP_NULL, 0, kid); |
79072805 LW |
4758 | kid->op_sibling = 0; |
4759 | linklist(kid); | |
4760 | newop->op_next = newop; | |
4761 | kid = newop; | |
4762 | kid->op_sibling = sibl; | |
4763 | *tokid = kid; | |
4764 | } | |
4765 | break; | |
4766 | case OA_FILEREF: | |
c340be78 | 4767 | if (kid->op_type != OP_GV && kid->op_type != OP_RV2GV) { |
79072805 | 4768 | if (kid->op_type == OP_CONST && |
62c18ce2 GS |
4769 | (kid->op_private & OPpCONST_BARE)) |
4770 | { | |
79072805 | 4771 | OP *newop = newGVOP(OP_GV, 0, |
2d8e6c8d | 4772 | gv_fetchpv(SvPVx(((SVOP*)kid)->op_sv, n_a), TRUE, |
85e6fe83 | 4773 | SVt_PVIO) ); |
79072805 LW |
4774 | op_free(kid); |
4775 | kid = newop; | |
4776 | } | |
1ea32a52 GS |
4777 | else if (kid->op_type == OP_READLINE) { |
4778 | /* neophyte patrol: open(<FH>), close(<FH>) etc. */ | |
4779 | bad_type(numargs, "HANDLE", PL_op_desc[o->op_type], kid); | |
4780 | } | |
79072805 | 4781 | else { |
35cd451c | 4782 | I32 flags = OPf_SPECIAL; |
853846ea | 4783 | I32 private = 0; |
35cd451c | 4784 | /* is this op a FH constructor? */ |
853846ea | 4785 | if (is_handle_constructor(o,numargs)) { |
1d8d4d2a | 4786 | flags = 0; |
853846ea NIS |
4787 | /* Set a flag to tell rv2gv to vivify |
4788 | * need to "prove" flag does not mean something | |
4789 | * else already - NI-S 1999/05/07 | |
4790 | */ | |
1d8d4d2a NIS |
4791 | private = OPpDEREF; |
4792 | #if 0 | |
4793 | /* Helps with open($array[$n],...) | |
4794 | but is too simplistic - need to do selectively | |
4795 | */ | |
4796 | mod(kid,type); | |
4797 | #endif | |
853846ea | 4798 | } |
79072805 | 4799 | kid->op_sibling = 0; |
35cd451c | 4800 | kid = newUNOP(OP_RV2GV, flags, scalar(kid)); |
1d8d4d2a | 4801 | if (private) { |
853846ea | 4802 | kid->op_private |= private; |
1d8d4d2a | 4803 | } |
79072805 LW |
4804 | } |
4805 | kid->op_sibling = sibl; | |
4806 | *tokid = kid; | |
4807 | } | |
4808 | scalar(kid); | |
4809 | break; | |
4810 | case OA_SCALARREF: | |
a0d0e21e | 4811 | mod(scalar(kid), type); |
79072805 LW |
4812 | break; |
4813 | } | |
4814 | oa >>= 4; | |
4815 | tokid = &kid->op_sibling; | |
4816 | kid = kid->op_sibling; | |
4817 | } | |
11343788 | 4818 | o->op_private |= numargs; |
79072805 | 4819 | if (kid) |
22c35a8c | 4820 | return too_many_arguments(o,PL_op_desc[o->op_type]); |
11343788 | 4821 | listkids(o); |
79072805 | 4822 | } |
22c35a8c | 4823 | else if (PL_opargs[type] & OA_DEFGV) { |
11343788 | 4824 | op_free(o); |
54b9620d | 4825 | return newUNOP(type, 0, newDEFSVOP()); |
a0d0e21e LW |
4826 | } |
4827 | ||
79072805 LW |
4828 | if (oa) { |
4829 | while (oa & OA_OPTIONAL) | |
4830 | oa >>= 4; | |
4831 | if (oa && oa != OA_LIST) | |
22c35a8c | 4832 | return too_few_arguments(o,PL_op_desc[o->op_type]); |
79072805 | 4833 | } |
11343788 | 4834 | return o; |
79072805 LW |
4835 | } |
4836 | ||
4837 | OP * | |
8ac85365 | 4838 | ck_glob(OP *o) |
79072805 | 4839 | { |
fb73857a | 4840 | GV *gv; |
4841 | ||
1f2bfc8a | 4842 | if ((o->op_flags & OPf_KIDS) && !cLISTOPo->op_first->op_sibling) |
54b9620d | 4843 | append_elem(OP_GLOB, o, newDEFSVOP()); |
fb73857a | 4844 | |
4845 | if (!((gv = gv_fetchpv("glob", FALSE, SVt_PVCV)) && GvIMPORTED_CV(gv))) | |
4846 | gv = gv_fetchpv("CORE::GLOBAL::glob", FALSE, SVt_PVCV); | |
b1cb66bf | 4847 | |
4848 | if (gv && GvIMPORTED_CV(gv)) { | |
5196be3e | 4849 | append_elem(OP_GLOB, o, |
80252599 | 4850 | newSVOP(OP_CONST, 0, newSViv(PL_glob_index++))); |
1f2bfc8a | 4851 | o->op_type = OP_LIST; |
22c35a8c | 4852 | o->op_ppaddr = PL_ppaddr[OP_LIST]; |
1f2bfc8a | 4853 | cLISTOPo->op_first->op_type = OP_PUSHMARK; |
22c35a8c | 4854 | cLISTOPo->op_first->op_ppaddr = PL_ppaddr[OP_PUSHMARK]; |
1f2bfc8a | 4855 | o = newUNOP(OP_ENTERSUB, OPf_STACKED, |
aeea060c | 4856 | append_elem(OP_LIST, o, |
1f2bfc8a MB |
4857 | scalar(newUNOP(OP_RV2CV, 0, |
4858 | newGVOP(OP_GV, 0, gv))))); | |
d58bf5aa MB |
4859 | o = newUNOP(OP_NULL, 0, ck_subr(o)); |
4860 | o->op_targ = OP_GLOB; /* hint at what it used to be */ | |
4861 | return o; | |
b1cb66bf | 4862 | } |
4863 | gv = newGVgen("main"); | |
a0d0e21e | 4864 | gv_IOadd(gv); |
11343788 MB |
4865 | append_elem(OP_GLOB, o, newGVOP(OP_GV, 0, gv)); |
4866 | scalarkids(o); | |
4867 | return ck_fun(o); | |
79072805 LW |
4868 | } |
4869 | ||
4870 | OP * | |
8ac85365 | 4871 | ck_grep(OP *o) |
79072805 LW |
4872 | { |
4873 | LOGOP *gwop; | |
4874 | OP *kid; | |
11343788 | 4875 | OPCODE type = o->op_type == OP_GREPSTART ? OP_GREPWHILE : OP_MAPWHILE; |
79072805 | 4876 | |
22c35a8c | 4877 | o->op_ppaddr = PL_ppaddr[OP_GREPSTART]; |
a0d0e21e | 4878 | Newz(1101, gwop, 1, LOGOP); |
aeea060c | 4879 | |
11343788 | 4880 | if (o->op_flags & OPf_STACKED) { |
a0d0e21e | 4881 | OP* k; |
11343788 MB |
4882 | o = ck_sort(o); |
4883 | kid = cLISTOPo->op_first->op_sibling; | |
4884 | for (k = cLISTOPo->op_first->op_sibling->op_next; k; k = k->op_next) { | |
a0d0e21e LW |
4885 | kid = k; |
4886 | } | |
4887 | kid->op_next = (OP*)gwop; | |
11343788 | 4888 | o->op_flags &= ~OPf_STACKED; |
93a17b20 | 4889 | } |
11343788 | 4890 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e LW |
4891 | if (type == OP_MAPWHILE) |
4892 | list(kid); | |
4893 | else | |
4894 | scalar(kid); | |
11343788 | 4895 | o = ck_fun(o); |
3280af22 | 4896 | if (PL_error_count) |
11343788 | 4897 | return o; |
aeea060c | 4898 | kid = cLISTOPo->op_first->op_sibling; |
79072805 | 4899 | if (kid->op_type != OP_NULL) |
463ee0b2 | 4900 | croak("panic: ck_grep"); |
79072805 LW |
4901 | kid = kUNOP->op_first; |
4902 | ||
a0d0e21e | 4903 | gwop->op_type = type; |
22c35a8c | 4904 | gwop->op_ppaddr = PL_ppaddr[type]; |
11343788 | 4905 | gwop->op_first = listkids(o); |
79072805 LW |
4906 | gwop->op_flags |= OPf_KIDS; |
4907 | gwop->op_private = 1; | |
4908 | gwop->op_other = LINKLIST(kid); | |
a0d0e21e | 4909 | gwop->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 LW |
4910 | kid->op_next = (OP*)gwop; |
4911 | ||
11343788 | 4912 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e | 4913 | if (!kid || !kid->op_sibling) |
22c35a8c | 4914 | return too_few_arguments(o,PL_op_desc[o->op_type]); |
a0d0e21e LW |
4915 | for (kid = kid->op_sibling; kid; kid = kid->op_sibling) |
4916 | mod(kid, OP_GREPSTART); | |
4917 | ||
79072805 LW |
4918 | return (OP*)gwop; |
4919 | } | |
4920 | ||
4921 | OP * | |
8ac85365 | 4922 | ck_index(OP *o) |
79072805 | 4923 | { |
11343788 MB |
4924 | if (o->op_flags & OPf_KIDS) { |
4925 | OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
0b71040e LW |
4926 | if (kid) |
4927 | kid = kid->op_sibling; /* get past "big" */ | |
79072805 | 4928 | if (kid && kid->op_type == OP_CONST) |
2779dcf1 | 4929 | fbm_compile(((SVOP*)kid)->op_sv, 0); |
79072805 | 4930 | } |
11343788 | 4931 | return ck_fun(o); |
79072805 LW |
4932 | } |
4933 | ||
4934 | OP * | |
8ac85365 | 4935 | ck_lengthconst(OP *o) |
79072805 LW |
4936 | { |
4937 | /* XXX length optimization goes here */ | |
11343788 | 4938 | return ck_fun(o); |
79072805 LW |
4939 | } |
4940 | ||
4941 | OP * | |
8ac85365 | 4942 | ck_lfun(OP *o) |
79072805 | 4943 | { |
5dc0d613 MB |
4944 | OPCODE type = o->op_type; |
4945 | return modkids(ck_fun(o), type); | |
79072805 LW |
4946 | } |
4947 | ||
4948 | OP * | |
8ac85365 | 4949 | ck_rfun(OP *o) |
8990e307 | 4950 | { |
5dc0d613 MB |
4951 | OPCODE type = o->op_type; |
4952 | return refkids(ck_fun(o), type); | |
8990e307 LW |
4953 | } |
4954 | ||
4955 | OP * | |
8ac85365 | 4956 | ck_listiob(OP *o) |
79072805 LW |
4957 | { |
4958 | register OP *kid; | |
aeea060c | 4959 | |
11343788 | 4960 | kid = cLISTOPo->op_first; |
79072805 | 4961 | if (!kid) { |
11343788 MB |
4962 | o = force_list(o); |
4963 | kid = cLISTOPo->op_first; | |
79072805 LW |
4964 | } |
4965 | if (kid->op_type == OP_PUSHMARK) | |
4966 | kid = kid->op_sibling; | |
11343788 | 4967 | if (kid && o->op_flags & OPf_STACKED) |
79072805 LW |
4968 | kid = kid->op_sibling; |
4969 | else if (kid && !kid->op_sibling) { /* print HANDLE; */ | |
4970 | if (kid->op_type == OP_CONST && kid->op_private & OPpCONST_BARE) { | |
11343788 | 4971 | o->op_flags |= OPf_STACKED; /* make it a filehandle */ |
748a9306 | 4972 | kid = newUNOP(OP_RV2GV, OPf_REF, scalar(kid)); |
11343788 MB |
4973 | cLISTOPo->op_first->op_sibling = kid; |
4974 | cLISTOPo->op_last = kid; | |
79072805 LW |
4975 | kid = kid->op_sibling; |
4976 | } | |
4977 | } | |
4978 | ||
4979 | if (!kid) | |
54b9620d | 4980 | append_elem(o->op_type, o, newDEFSVOP()); |
79072805 | 4981 | |
5dc0d613 | 4982 | o = listkids(o); |
bbce6d69 | 4983 | |
5dc0d613 | 4984 | o->op_private = 0; |
36477c24 | 4985 | #ifdef USE_LOCALE |
3280af22 | 4986 | if (PL_hints & HINT_LOCALE) |
5dc0d613 | 4987 | o->op_private |= OPpLOCALE; |
bbce6d69 | 4988 | #endif |
4989 | ||
5dc0d613 | 4990 | return o; |
bbce6d69 | 4991 | } |
4992 | ||
4993 | OP * | |
8ac85365 | 4994 | ck_fun_locale(OP *o) |
bbce6d69 | 4995 | { |
5dc0d613 | 4996 | o = ck_fun(o); |
bbce6d69 | 4997 | |
5dc0d613 | 4998 | o->op_private = 0; |
36477c24 | 4999 | #ifdef USE_LOCALE |
3280af22 | 5000 | if (PL_hints & HINT_LOCALE) |
5dc0d613 | 5001 | o->op_private |= OPpLOCALE; |
bbce6d69 | 5002 | #endif |
5003 | ||
5dc0d613 | 5004 | return o; |
bbce6d69 | 5005 | } |
5006 | ||
5007 | OP * | |
8ac85365 | 5008 | ck_scmp(OP *o) |
bbce6d69 | 5009 | { |
5dc0d613 | 5010 | o->op_private = 0; |
36477c24 | 5011 | #ifdef USE_LOCALE |
3280af22 | 5012 | if (PL_hints & HINT_LOCALE) |
5dc0d613 | 5013 | o->op_private |= OPpLOCALE; |
bbce6d69 | 5014 | #endif |
36477c24 | 5015 | |
5dc0d613 | 5016 | return o; |
79072805 LW |
5017 | } |
5018 | ||
5019 | OP * | |
8ac85365 | 5020 | ck_match(OP *o) |
79072805 | 5021 | { |
5dc0d613 | 5022 | o->op_private |= OPpRUNTIME; |
11343788 | 5023 | return o; |
79072805 LW |
5024 | } |
5025 | ||
5026 | OP * | |
8ac85365 | 5027 | ck_null(OP *o) |
79072805 | 5028 | { |
11343788 | 5029 | return o; |
79072805 LW |
5030 | } |
5031 | ||
5032 | OP * | |
8ac85365 | 5033 | ck_repeat(OP *o) |
79072805 | 5034 | { |
11343788 MB |
5035 | if (cBINOPo->op_first->op_flags & OPf_PARENS) { |
5036 | o->op_private |= OPpREPEAT_DOLIST; | |
5037 | cBINOPo->op_first = force_list(cBINOPo->op_first); | |
79072805 LW |
5038 | } |
5039 | else | |
11343788 MB |
5040 | scalar(o); |
5041 | return o; | |
79072805 LW |
5042 | } |
5043 | ||
5044 | OP * | |
8ac85365 | 5045 | ck_require(OP *o) |
8990e307 | 5046 | { |
11343788 MB |
5047 | if (o->op_flags & OPf_KIDS) { /* Shall we supply missing .pm? */ |
5048 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
8990e307 LW |
5049 | |
5050 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
8990e307 | 5051 | char *s; |
a0d0e21e LW |
5052 | for (s = SvPVX(kid->op_sv); *s; s++) { |
5053 | if (*s == ':' && s[1] == ':') { | |
5054 | *s = '/'; | |
1aef975c | 5055 | Move(s+2, s+1, strlen(s+2)+1, char); |
a0d0e21e LW |
5056 | --SvCUR(kid->op_sv); |
5057 | } | |
8990e307 | 5058 | } |
a0d0e21e | 5059 | sv_catpvn(kid->op_sv, ".pm", 3); |
8990e307 LW |
5060 | } |
5061 | } | |
11343788 | 5062 | return ck_fun(o); |
8990e307 LW |
5063 | } |
5064 | ||
22c35a8c | 5065 | #if 0 |
8990e307 | 5066 | OP * |
8ac85365 | 5067 | ck_retarget(OP *o) |
79072805 | 5068 | { |
463ee0b2 | 5069 | croak("NOT IMPL LINE %d",__LINE__); |
79072805 | 5070 | /* STUB */ |
11343788 | 5071 | return o; |
79072805 | 5072 | } |
22c35a8c | 5073 | #endif |
79072805 LW |
5074 | |
5075 | OP * | |
8ac85365 | 5076 | ck_select(OP *o) |
79072805 | 5077 | { |
c07a80fd | 5078 | OP* kid; |
11343788 MB |
5079 | if (o->op_flags & OPf_KIDS) { |
5080 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
2304df62 | 5081 | if (kid && kid->op_sibling) { |
11343788 | 5082 | o->op_type = OP_SSELECT; |
22c35a8c | 5083 | o->op_ppaddr = PL_ppaddr[OP_SSELECT]; |
11343788 MB |
5084 | o = ck_fun(o); |
5085 | return fold_constants(o); | |
79072805 LW |
5086 | } |
5087 | } | |
11343788 MB |
5088 | o = ck_fun(o); |
5089 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
c07a80fd | 5090 | if (kid && kid->op_type == OP_RV2GV) |
5091 | kid->op_private &= ~HINT_STRICT_REFS; | |
11343788 | 5092 | return o; |
79072805 LW |
5093 | } |
5094 | ||
5095 | OP * | |
8ac85365 | 5096 | ck_shift(OP *o) |
79072805 | 5097 | { |
11343788 | 5098 | I32 type = o->op_type; |
79072805 | 5099 | |
11343788 | 5100 | if (!(o->op_flags & OPf_KIDS)) { |
6d4ff0d2 MB |
5101 | OP *argop; |
5102 | ||
11343788 | 5103 | op_free(o); |
6d4ff0d2 | 5104 | #ifdef USE_THREADS |
533c011a | 5105 | if (!CvUNIQUE(PL_compcv)) { |
6d4ff0d2 | 5106 | argop = newOP(OP_PADAV, OPf_REF); |
6b88bc9c | 5107 | argop->op_targ = 0; /* PL_curpad[0] is @_ */ |
6d4ff0d2 MB |
5108 | } |
5109 | else { | |
5110 | argop = newUNOP(OP_RV2AV, 0, | |
5111 | scalar(newGVOP(OP_GV, 0, | |
5112 | gv_fetchpv("ARGV", TRUE, SVt_PVAV)))); | |
5113 | } | |
5114 | #else | |
5115 | argop = newUNOP(OP_RV2AV, 0, | |
3280af22 NIS |
5116 | scalar(newGVOP(OP_GV, 0, !CvUNIQUE(PL_compcv) ? |
5117 | PL_defgv : gv_fetchpv("ARGV", TRUE, SVt_PVAV)))); | |
6d4ff0d2 MB |
5118 | #endif /* USE_THREADS */ |
5119 | return newUNOP(type, 0, scalar(argop)); | |
79072805 | 5120 | } |
11343788 | 5121 | return scalar(modkids(ck_fun(o), type)); |
79072805 LW |
5122 | } |
5123 | ||
5124 | OP * | |
8ac85365 | 5125 | ck_sort(OP *o) |
79072805 | 5126 | { |
5dc0d613 | 5127 | o->op_private = 0; |
36477c24 | 5128 | #ifdef USE_LOCALE |
3280af22 | 5129 | if (PL_hints & HINT_LOCALE) |
5dc0d613 | 5130 | o->op_private |= OPpLOCALE; |
bbce6d69 | 5131 | #endif |
5132 | ||
9ea6e965 | 5133 | if (o->op_type == OP_SORT && o->op_flags & OPf_STACKED) |
51a19bc0 | 5134 | simplify_sort(o); |
9c007264 | 5135 | if (o->op_flags & OPf_STACKED) { /* may have been cleared */ |
11343788 | 5136 | OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
463ee0b2 | 5137 | OP *k; |
82092f1d | 5138 | kid = kUNOP->op_first; /* get past null */ |
79072805 | 5139 | |
463ee0b2 | 5140 | if (kid->op_type == OP_SCOPE || kid->op_type == OP_LEAVE) { |
79072805 | 5141 | linklist(kid); |
463ee0b2 LW |
5142 | if (kid->op_type == OP_SCOPE) { |
5143 | k = kid->op_next; | |
5144 | kid->op_next = 0; | |
79072805 | 5145 | } |
463ee0b2 | 5146 | else if (kid->op_type == OP_LEAVE) { |
11343788 | 5147 | if (o->op_type == OP_SORT) { |
748a9306 LW |
5148 | null(kid); /* wipe out leave */ |
5149 | kid->op_next = kid; | |
463ee0b2 | 5150 | |
748a9306 LW |
5151 | for (k = kLISTOP->op_first->op_next; k; k = k->op_next) { |
5152 | if (k->op_next == kid) | |
5153 | k->op_next = 0; | |
5154 | } | |
463ee0b2 | 5155 | } |
748a9306 LW |
5156 | else |
5157 | kid->op_next = 0; /* just disconnect the leave */ | |
a0d0e21e | 5158 | k = kLISTOP->op_first; |
463ee0b2 | 5159 | } |
a0d0e21e LW |
5160 | peep(k); |
5161 | ||
11343788 | 5162 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
11343788 | 5163 | if (o->op_type == OP_SORT) |
a0d0e21e LW |
5164 | kid->op_next = kid; |
5165 | else | |
5166 | kid->op_next = k; | |
11343788 | 5167 | o->op_flags |= OPf_SPECIAL; |
79072805 | 5168 | } |
c6e96bcb GS |
5169 | else if (kid->op_type == OP_RV2SV || kid->op_type == OP_PADSV) |
5170 | null(cLISTOPo->op_first->op_sibling); | |
79072805 | 5171 | } |
bbce6d69 | 5172 | |
11343788 | 5173 | return o; |
79072805 | 5174 | } |
bda4119b GS |
5175 | |
5176 | STATIC void | |
9c007264 JH |
5177 | simplify_sort(OP *o) |
5178 | { | |
51a19bc0 | 5179 | dTHR; |
9c007264 JH |
5180 | register OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
5181 | OP *k; | |
5182 | int reversed; | |
5183 | if (!(o->op_flags & OPf_STACKED)) | |
5184 | return; | |
9ea6e965 GS |
5185 | GvMULTI_on(gv_fetchpv("a", TRUE, SVt_PV)); |
5186 | GvMULTI_on(gv_fetchpv("b", TRUE, SVt_PV)); | |
82092f1d | 5187 | kid = kUNOP->op_first; /* get past null */ |
9c007264 JH |
5188 | if (kid->op_type != OP_SCOPE) |
5189 | return; | |
5190 | kid = kLISTOP->op_last; /* get past scope */ | |
5191 | switch(kid->op_type) { | |
5192 | case OP_NCMP: | |
5193 | case OP_I_NCMP: | |
5194 | case OP_SCMP: | |
5195 | break; | |
5196 | default: | |
5197 | return; | |
5198 | } | |
5199 | k = kid; /* remember this node*/ | |
5200 | if (kBINOP->op_first->op_type != OP_RV2SV) | |
5201 | return; | |
5202 | kid = kBINOP->op_first; /* get past cmp */ | |
5203 | if (kUNOP->op_first->op_type != OP_GV) | |
5204 | return; | |
5205 | kid = kUNOP->op_first; /* get past rv2sv */ | |
5206 | if (GvSTASH(kGVOP->op_gv) != PL_curstash) | |
5207 | return; | |
5208 | if (strEQ(GvNAME(kGVOP->op_gv), "a")) | |
5209 | reversed = 0; | |
5210 | else if(strEQ(GvNAME(kGVOP->op_gv), "b")) | |
5211 | reversed = 1; | |
5212 | else | |
5213 | return; | |
5214 | kid = k; /* back to cmp */ | |
5215 | if (kBINOP->op_last->op_type != OP_RV2SV) | |
5216 | return; | |
5217 | kid = kBINOP->op_last; /* down to 2nd arg */ | |
5218 | if (kUNOP->op_first->op_type != OP_GV) | |
5219 | return; | |
5220 | kid = kUNOP->op_first; /* get past rv2sv */ | |
5221 | if (GvSTASH(kGVOP->op_gv) != PL_curstash | |
5222 | || ( reversed | |
5223 | ? strNE(GvNAME(kGVOP->op_gv), "a") | |
5224 | : strNE(GvNAME(kGVOP->op_gv), "b"))) | |
5225 | return; | |
5226 | o->op_flags &= ~(OPf_STACKED | OPf_SPECIAL); | |
5227 | if (reversed) | |
5228 | o->op_private |= OPpSORT_REVERSE; | |
5229 | if (k->op_type == OP_NCMP) | |
5230 | o->op_private |= OPpSORT_NUMERIC; | |
5231 | if (k->op_type == OP_I_NCMP) | |
5232 | o->op_private |= OPpSORT_NUMERIC | OPpSORT_INTEGER; | |
5233 | op_free(cLISTOPo->op_first->op_sibling); /* delete comparison block */ | |
5234 | cLISTOPo->op_first->op_sibling = cLISTOPo->op_last; | |
5235 | cLISTOPo->op_children = 1; | |
5236 | } | |
79072805 LW |
5237 | |
5238 | OP * | |
8ac85365 | 5239 | ck_split(OP *o) |
79072805 LW |
5240 | { |
5241 | register OP *kid; | |
aeea060c | 5242 | |
11343788 MB |
5243 | if (o->op_flags & OPf_STACKED) |
5244 | return no_fh_allowed(o); | |
79072805 | 5245 | |
11343788 | 5246 | kid = cLISTOPo->op_first; |
8990e307 | 5247 | if (kid->op_type != OP_NULL) |
463ee0b2 | 5248 | croak("panic: ck_split"); |
8990e307 | 5249 | kid = kid->op_sibling; |
11343788 MB |
5250 | op_free(cLISTOPo->op_first); |
5251 | cLISTOPo->op_first = kid; | |
85e6fe83 | 5252 | if (!kid) { |
79cb57f6 | 5253 | cLISTOPo->op_first = kid = newSVOP(OP_CONST, 0, newSVpvn(" ", 1)); |
11343788 | 5254 | cLISTOPo->op_last = kid; /* There was only one element previously */ |
85e6fe83 | 5255 | } |
79072805 LW |
5256 | |
5257 | if (kid->op_type != OP_MATCH) { | |
5258 | OP *sibl = kid->op_sibling; | |
463ee0b2 | 5259 | kid->op_sibling = 0; |
79072805 | 5260 | kid = pmruntime( newPMOP(OP_MATCH, OPf_SPECIAL), kid, Nullop); |
11343788 MB |
5261 | if (cLISTOPo->op_first == cLISTOPo->op_last) |
5262 | cLISTOPo->op_last = kid; | |
5263 | cLISTOPo->op_first = kid; | |
79072805 LW |
5264 | kid->op_sibling = sibl; |
5265 | } | |
5266 | ||
5267 | kid->op_type = OP_PUSHRE; | |
22c35a8c | 5268 | kid->op_ppaddr = PL_ppaddr[OP_PUSHRE]; |
79072805 LW |
5269 | scalar(kid); |
5270 | ||
5271 | if (!kid->op_sibling) | |
54b9620d | 5272 | append_elem(OP_SPLIT, o, newDEFSVOP()); |
79072805 LW |
5273 | |
5274 | kid = kid->op_sibling; | |
5275 | scalar(kid); | |
5276 | ||
5277 | if (!kid->op_sibling) | |
11343788 | 5278 | append_elem(OP_SPLIT, o, newSVOP(OP_CONST, 0, newSViv(0))); |
79072805 LW |
5279 | |
5280 | kid = kid->op_sibling; | |
5281 | scalar(kid); | |
5282 | ||
5283 | if (kid->op_sibling) | |
22c35a8c | 5284 | return too_many_arguments(o,PL_op_desc[o->op_type]); |
79072805 | 5285 | |
11343788 | 5286 | return o; |
79072805 LW |
5287 | } |
5288 | ||
5289 | OP * | |
8ac85365 | 5290 | ck_subr(OP *o) |
79072805 | 5291 | { |
11343788 MB |
5292 | dTHR; |
5293 | OP *prev = ((cUNOPo->op_first->op_sibling) | |
5294 | ? cUNOPo : ((UNOP*)cUNOPo->op_first))->op_first; | |
5295 | OP *o2 = prev->op_sibling; | |
4633a7c4 LW |
5296 | OP *cvop; |
5297 | char *proto = 0; | |
5298 | CV *cv = 0; | |
46fc3d4c | 5299 | GV *namegv = 0; |
4633a7c4 LW |
5300 | int optional = 0; |
5301 | I32 arg = 0; | |
2d8e6c8d | 5302 | STRLEN n_a; |
4633a7c4 | 5303 | |
11343788 | 5304 | for (cvop = o2; cvop->op_sibling; cvop = cvop->op_sibling) ; |
4633a7c4 LW |
5305 | if (cvop->op_type == OP_RV2CV) { |
5306 | SVOP* tmpop; | |
11343788 | 5307 | o->op_private |= (cvop->op_private & OPpENTERSUB_AMPER); |
4633a7c4 LW |
5308 | null(cvop); /* disable rv2cv */ |
5309 | tmpop = (SVOP*)((UNOP*)cvop)->op_first; | |
5310 | if (tmpop->op_type == OP_GV) { | |
8ebc5c01 | 5311 | cv = GvCVu(tmpop->op_sv); |
5dc0d613 | 5312 | if (cv && SvPOK(cv) && !(o->op_private & OPpENTERSUB_AMPER)) { |
46fc3d4c | 5313 | namegv = CvANON(cv) ? (GV*)tmpop->op_sv : CvGV(cv); |
2d8e6c8d | 5314 | proto = SvPV((SV*)cv, n_a); |
46fc3d4c | 5315 | } |
4633a7c4 LW |
5316 | } |
5317 | } | |
3280af22 NIS |
5318 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
5319 | if (PERLDB_SUB && PL_curstash != PL_debstash) | |
11343788 MB |
5320 | o->op_private |= OPpENTERSUB_DB; |
5321 | while (o2 != cvop) { | |
4633a7c4 LW |
5322 | if (proto) { |
5323 | switch (*proto) { | |
5324 | case '\0': | |
5dc0d613 | 5325 | return too_many_arguments(o, gv_ename(namegv)); |
4633a7c4 LW |
5326 | case ';': |
5327 | optional = 1; | |
5328 | proto++; | |
5329 | continue; | |
5330 | case '$': | |
5331 | proto++; | |
5332 | arg++; | |
11343788 | 5333 | scalar(o2); |
4633a7c4 LW |
5334 | break; |
5335 | case '%': | |
5336 | case '@': | |
11343788 | 5337 | list(o2); |
4633a7c4 LW |
5338 | arg++; |
5339 | break; | |
5340 | case '&': | |
5341 | proto++; | |
5342 | arg++; | |
11343788 | 5343 | if (o2->op_type != OP_REFGEN && o2->op_type != OP_UNDEF) |
5dc0d613 | 5344 | bad_type(arg, "block", gv_ename(namegv), o2); |
4633a7c4 LW |
5345 | break; |
5346 | case '*': | |
2ba6ecf4 | 5347 | /* '*' allows any scalar type, including bareword */ |
4633a7c4 LW |
5348 | proto++; |
5349 | arg++; | |
11343788 | 5350 | if (o2->op_type == OP_RV2GV) |
2ba6ecf4 GS |
5351 | goto wrapref; /* autoconvert GLOB -> GLOBref */ |
5352 | scalar(o2); | |
5353 | break; | |
4633a7c4 LW |
5354 | case '\\': |
5355 | proto++; | |
5356 | arg++; | |
5357 | switch (*proto++) { | |
5358 | case '*': | |
11343788 | 5359 | if (o2->op_type != OP_RV2GV) |
5dc0d613 | 5360 | bad_type(arg, "symbol", gv_ename(namegv), o2); |
4633a7c4 LW |
5361 | goto wrapref; |
5362 | case '&': | |
11343788 | 5363 | if (o2->op_type != OP_RV2CV) |
5dc0d613 | 5364 | bad_type(arg, "sub", gv_ename(namegv), o2); |
4633a7c4 LW |
5365 | goto wrapref; |
5366 | case '$': | |
386acf99 GS |
5367 | if (o2->op_type != OP_RV2SV |
5368 | && o2->op_type != OP_PADSV | |
5369 | && o2->op_type != OP_THREADSV) | |
5370 | { | |
5dc0d613 | 5371 | bad_type(arg, "scalar", gv_ename(namegv), o2); |
386acf99 | 5372 | } |
4633a7c4 LW |
5373 | goto wrapref; |
5374 | case '@': | |
11343788 | 5375 | if (o2->op_type != OP_RV2AV && o2->op_type != OP_PADAV) |
5dc0d613 | 5376 | bad_type(arg, "array", gv_ename(namegv), o2); |
4633a7c4 LW |
5377 | goto wrapref; |
5378 | case '%': | |
11343788 | 5379 | if (o2->op_type != OP_RV2HV && o2->op_type != OP_PADHV) |
5dc0d613 | 5380 | bad_type(arg, "hash", gv_ename(namegv), o2); |
4633a7c4 LW |
5381 | wrapref: |
5382 | { | |
11343788 | 5383 | OP* kid = o2; |
6fa846a0 | 5384 | OP* sib = kid->op_sibling; |
4633a7c4 | 5385 | kid->op_sibling = 0; |
6fa846a0 GS |
5386 | o2 = newUNOP(OP_REFGEN, 0, kid); |
5387 | o2->op_sibling = sib; | |
e858de61 | 5388 | prev->op_sibling = o2; |
4633a7c4 LW |
5389 | } |
5390 | break; | |
5391 | default: goto oops; | |
5392 | } | |
5393 | break; | |
b1cb66bf | 5394 | case ' ': |
5395 | proto++; | |
5396 | continue; | |
4633a7c4 LW |
5397 | default: |
5398 | oops: | |
5399 | croak("Malformed prototype for %s: %s", | |
2d8e6c8d | 5400 | gv_ename(namegv), SvPV((SV*)cv, n_a)); |
4633a7c4 LW |
5401 | } |
5402 | } | |
5403 | else | |
11343788 MB |
5404 | list(o2); |
5405 | mod(o2, OP_ENTERSUB); | |
5406 | prev = o2; | |
5407 | o2 = o2->op_sibling; | |
4633a7c4 | 5408 | } |
fb73857a | 5409 | if (proto && !optional && |
5410 | (*proto && *proto != '@' && *proto != '%' && *proto != ';')) | |
5dc0d613 | 5411 | return too_few_arguments(o, gv_ename(namegv)); |
11343788 | 5412 | return o; |
79072805 LW |
5413 | } |
5414 | ||
5415 | OP * | |
8ac85365 | 5416 | ck_svconst(OP *o) |
8990e307 | 5417 | { |
11343788 MB |
5418 | SvREADONLY_on(cSVOPo->op_sv); |
5419 | return o; | |
8990e307 LW |
5420 | } |
5421 | ||
5422 | OP * | |
8ac85365 | 5423 | ck_trunc(OP *o) |
79072805 | 5424 | { |
11343788 MB |
5425 | if (o->op_flags & OPf_KIDS) { |
5426 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 | 5427 | |
a0d0e21e LW |
5428 | if (kid->op_type == OP_NULL) |
5429 | kid = (SVOP*)kid->op_sibling; | |
5430 | if (kid && | |
5431 | kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) | |
11343788 | 5432 | o->op_flags |= OPf_SPECIAL; |
79072805 | 5433 | } |
11343788 | 5434 | return ck_fun(o); |
79072805 LW |
5435 | } |
5436 | ||
463ee0b2 LW |
5437 | /* A peephole optimizer. We visit the ops in the order they're to execute. */ |
5438 | ||
79072805 | 5439 | void |
8ac85365 | 5440 | peep(register OP *o) |
79072805 | 5441 | { |
11343788 | 5442 | dTHR; |
79072805 | 5443 | register OP* oldop = 0; |
2d8e6c8d GS |
5444 | STRLEN n_a; |
5445 | ||
a0d0e21e | 5446 | if (!o || o->op_seq) |
79072805 | 5447 | return; |
a0d0e21e | 5448 | ENTER; |
462e5cf6 | 5449 | SAVEOP(); |
3280af22 | 5450 | SAVESPTR(PL_curcop); |
a0d0e21e LW |
5451 | for (; o; o = o->op_next) { |
5452 | if (o->op_seq) | |
5453 | break; | |
3280af22 NIS |
5454 | if (!PL_op_seqmax) |
5455 | PL_op_seqmax++; | |
533c011a | 5456 | PL_op = o; |
a0d0e21e LW |
5457 | switch (o->op_type) { |
5458 | case OP_NEXTSTATE: | |
5459 | case OP_DBSTATE: | |
3280af22 NIS |
5460 | PL_curcop = ((COP*)o); /* for warnings */ |
5461 | o->op_seq = PL_op_seqmax++; | |
a0d0e21e LW |
5462 | break; |
5463 | ||
5464 | case OP_CONCAT: | |
5465 | case OP_CONST: | |
5466 | case OP_JOIN: | |
5467 | case OP_UC: | |
5468 | case OP_UCFIRST: | |
5469 | case OP_LC: | |
5470 | case OP_LCFIRST: | |
5471 | case OP_QUOTEMETA: | |
3c4f770c | 5472 | if (o->op_next && o->op_next->op_type == OP_STRINGIFY) |
a0d0e21e | 5473 | null(o->op_next); |
3280af22 | 5474 | o->op_seq = PL_op_seqmax++; |
a0d0e21e | 5475 | break; |
8990e307 | 5476 | case OP_STUB: |
54310121 | 5477 | if ((o->op_flags & OPf_WANT) != OPf_WANT_LIST) { |
3280af22 | 5478 | o->op_seq = PL_op_seqmax++; |
54310121 | 5479 | break; /* Scalar stub must produce undef. List stub is noop */ |
8990e307 | 5480 | } |
748a9306 | 5481 | goto nothin; |
79072805 | 5482 | case OP_NULL: |
748a9306 | 5483 | if (o->op_targ == OP_NEXTSTATE || o->op_targ == OP_DBSTATE) |
3280af22 | 5484 | PL_curcop = ((COP*)o); |
748a9306 | 5485 | goto nothin; |
79072805 | 5486 | case OP_SCALAR: |
93a17b20 | 5487 | case OP_LINESEQ: |
463ee0b2 | 5488 | case OP_SCOPE: |
748a9306 | 5489 | nothin: |
a0d0e21e LW |
5490 | if (oldop && o->op_next) { |
5491 | oldop->op_next = o->op_next; | |
79072805 LW |
5492 | continue; |
5493 | } | |
3280af22 | 5494 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
5495 | break; |
5496 | ||
5497 | case OP_GV: | |
a0d0e21e | 5498 | if (o->op_next->op_type == OP_RV2SV) { |
5f05dabc | 5499 | if (!(o->op_next->op_private & OPpDEREF)) { |
a0d0e21e LW |
5500 | null(o->op_next); |
5501 | o->op_private |= o->op_next->op_private & OPpLVAL_INTRO; | |
5502 | o->op_next = o->op_next->op_next; | |
5503 | o->op_type = OP_GVSV; | |
22c35a8c | 5504 | o->op_ppaddr = PL_ppaddr[OP_GVSV]; |
8990e307 LW |
5505 | } |
5506 | } | |
a0d0e21e LW |
5507 | else if (o->op_next->op_type == OP_RV2AV) { |
5508 | OP* pop = o->op_next->op_next; | |
5509 | IV i; | |
8990e307 | 5510 | if (pop->op_type == OP_CONST && |
533c011a | 5511 | (PL_op = pop->op_next) && |
8990e307 | 5512 | pop->op_next->op_type == OP_AELEM && |
a0d0e21e | 5513 | !(pop->op_next->op_private & |
68dc0745 | 5514 | (OPpLVAL_INTRO|OPpLVAL_DEFER|OPpDEREF)) && |
3280af22 | 5515 | (i = SvIV(((SVOP*)pop)->op_sv) - PL_compiling.cop_arybase) |
a0d0e21e | 5516 | <= 255 && |
8990e307 LW |
5517 | i >= 0) |
5518 | { | |
748a9306 | 5519 | SvREFCNT_dec(((SVOP*)pop)->op_sv); |
a0d0e21e | 5520 | null(o->op_next); |
8990e307 LW |
5521 | null(pop->op_next); |
5522 | null(pop); | |
a0d0e21e LW |
5523 | o->op_flags |= pop->op_next->op_flags & OPf_MOD; |
5524 | o->op_next = pop->op_next->op_next; | |
5525 | o->op_type = OP_AELEMFAST; | |
22c35a8c | 5526 | o->op_ppaddr = PL_ppaddr[OP_AELEMFAST]; |
a0d0e21e | 5527 | o->op_private = (U8)i; |
a6006777 | 5528 | GvAVn(((GVOP*)o)->op_gv); |
8990e307 | 5529 | } |
79072805 | 5530 | } |
3280af22 | 5531 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
5532 | break; |
5533 | ||
a0d0e21e | 5534 | case OP_MAPWHILE: |
79072805 LW |
5535 | case OP_GREPWHILE: |
5536 | case OP_AND: | |
5537 | case OP_OR: | |
3280af22 | 5538 | o->op_seq = PL_op_seqmax++; |
fd4d1407 IZ |
5539 | while (cLOGOP->op_other->op_type == OP_NULL) |
5540 | cLOGOP->op_other = cLOGOP->op_other->op_next; | |
79072805 LW |
5541 | peep(cLOGOP->op_other); |
5542 | break; | |
5543 | ||
5544 | case OP_COND_EXPR: | |
3280af22 | 5545 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
5546 | peep(cCONDOP->op_true); |
5547 | peep(cCONDOP->op_false); | |
5548 | break; | |
5549 | ||
5550 | case OP_ENTERLOOP: | |
3280af22 | 5551 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
5552 | peep(cLOOP->op_redoop); |
5553 | peep(cLOOP->op_nextop); | |
5554 | peep(cLOOP->op_lastop); | |
5555 | break; | |
5556 | ||
8782bef2 | 5557 | case OP_QR: |
79072805 LW |
5558 | case OP_MATCH: |
5559 | case OP_SUBST: | |
3280af22 | 5560 | o->op_seq = PL_op_seqmax++; |
a0d0e21e | 5561 | peep(cPMOP->op_pmreplstart); |
79072805 LW |
5562 | break; |
5563 | ||
a0d0e21e | 5564 | case OP_EXEC: |
3280af22 | 5565 | o->op_seq = PL_op_seqmax++; |
599cee73 PM |
5566 | if (ckWARN(WARN_SYNTAX) && o->op_next |
5567 | && o->op_next->op_type == OP_NEXTSTATE) { | |
a0d0e21e | 5568 | if (o->op_next->op_sibling && |
20408e3c GS |
5569 | o->op_next->op_sibling->op_type != OP_EXIT && |
5570 | o->op_next->op_sibling->op_type != OP_WARN && | |
a0d0e21e | 5571 | o->op_next->op_sibling->op_type != OP_DIE) { |
3280af22 | 5572 | line_t oldline = PL_curcop->cop_line; |
a0d0e21e | 5573 | |
3280af22 | 5574 | PL_curcop->cop_line = ((COP*)o->op_next)->cop_line; |
599cee73 PM |
5575 | warner(WARN_SYNTAX, "Statement unlikely to be reached"); |
5576 | warner(WARN_SYNTAX, "(Maybe you meant system() when you said exec()?)\n"); | |
3280af22 | 5577 | PL_curcop->cop_line = oldline; |
a0d0e21e LW |
5578 | } |
5579 | } | |
5580 | break; | |
aeea060c | 5581 | |
c750a3ec MB |
5582 | case OP_HELEM: { |
5583 | UNOP *rop; | |
5584 | SV *lexname; | |
5585 | GV **fields; | |
5586 | SV **svp, **indsvp; | |
5587 | I32 ind; | |
5588 | char *key; | |
5589 | STRLEN keylen; | |
aeea060c | 5590 | |
377b21bb | 5591 | if ((o->op_private & (OPpLVAL_INTRO)) |
c750a3ec MB |
5592 | || ((BINOP*)o)->op_last->op_type != OP_CONST) |
5593 | break; | |
5594 | rop = (UNOP*)((BINOP*)o)->op_first; | |
5595 | if (rop->op_type != OP_RV2HV || rop->op_first->op_type != OP_PADSV) | |
5596 | break; | |
3280af22 | 5597 | lexname = *av_fetch(PL_comppad_name, rop->op_first->op_targ, TRUE); |
c750a3ec MB |
5598 | if (!SvOBJECT(lexname)) |
5599 | break; | |
5196be3e | 5600 | fields = (GV**)hv_fetch(SvSTASH(lexname), "FIELDS", 6, FALSE); |
c750a3ec MB |
5601 | if (!fields || !GvHV(*fields)) |
5602 | break; | |
5603 | svp = &((SVOP*)((BINOP*)o)->op_last)->op_sv; | |
5604 | key = SvPV(*svp, keylen); | |
5605 | indsvp = hv_fetch(GvHV(*fields), key, keylen, FALSE); | |
5606 | if (!indsvp) { | |
5607 | croak("No such field \"%s\" in variable %s of type %s", | |
2d8e6c8d | 5608 | key, SvPV(lexname, n_a), HvNAME(SvSTASH(lexname))); |
c750a3ec MB |
5609 | } |
5610 | ind = SvIV(*indsvp); | |
5611 | if (ind < 1) | |
5612 | croak("Bad index while coercing array into hash"); | |
5613 | rop->op_type = OP_RV2AV; | |
22c35a8c | 5614 | rop->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
c750a3ec | 5615 | o->op_type = OP_AELEM; |
22c35a8c | 5616 | o->op_ppaddr = PL_ppaddr[OP_AELEM]; |
c750a3ec MB |
5617 | SvREFCNT_dec(*svp); |
5618 | *svp = newSViv(ind); | |
5619 | break; | |
5620 | } | |
5621 | ||
79072805 | 5622 | default: |
3280af22 | 5623 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
5624 | break; |
5625 | } | |
a0d0e21e | 5626 | oldop = o; |
79072805 | 5627 | } |
a0d0e21e | 5628 | LEAVE; |
79072805 | 5629 | } |