Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* op.c |
79072805 | 2 | * |
9607fc9c | 3 | * Copyright (c) 1991-1997, Larry Wall |
79072805 LW |
4 | * |
5 | * You may distribute under the terms of either the GNU General Public | |
6 | * License or the Artistic License, as specified in the README file. | |
7 | * | |
a0d0e21e LW |
8 | */ |
9 | ||
10 | /* | |
11 | * "You see: Mr. Drogo, he married poor Miss Primula Brandybuck. She was | |
12 | * our Mr. Bilbo's first cousin on the mother's side (her mother being the | |
13 | * youngest of the Old Took's daughters); and Mr. Drogo was his second | |
14 | * cousin. So Mr. Frodo is his first *and* second cousin, once removed | |
15 | * either way, as the saying is, if you follow me." --the Gaffer | |
79072805 LW |
16 | */ |
17 | ||
18 | #include "EXTERN.h" | |
19 | #include "perl.h" | |
20 | ||
76e3520e | 21 | #ifdef PERL_OBJECT |
22c35a8c | 22 | #define CHECKCALL this->*PL_check |
76e3520e | 23 | #else |
22c35a8c | 24 | #define CHECKCALL *PL_check |
76e3520e GS |
25 | #endif |
26 | ||
e50aee73 | 27 | /* |
5dc0d613 | 28 | * In the following definition, the ", Nullop" is just to make the compiler |
a5f75d66 | 29 | * think the expression is of the right type: croak actually does a Siglongjmp. |
e50aee73 | 30 | */ |
11343788 | 31 | #define CHECKOP(type,o) \ |
3280af22 | 32 | ((PL_op_mask && PL_op_mask[type]) \ |
5dc0d613 | 33 | ? ( op_free((OP*)o), \ |
22c35a8c | 34 | croak("%s trapped by operation mask", PL_op_desc[type]), \ |
28757baa | 35 | Nullop ) \ |
76e3520e | 36 | : (CHECKCALL[type])((OP*)o)) |
e50aee73 | 37 | |
c53d7c7d HS |
38 | #define PAD_MAX 999999999 |
39 | ||
76e3520e GS |
40 | static bool scalar_mod_type _((OP *o, I32 type)); |
41 | #ifndef PERL_OBJECT | |
11343788 | 42 | static I32 list_assignment _((OP *o)); |
3bc5dc61 | 43 | static void bad_type _((I32 n, char *t, char *name, OP *kid)); |
11343788 MB |
44 | static OP *modkids _((OP *o, I32 type)); |
45 | static OP *no_fh_allowed _((OP *o)); | |
46 | static OP *scalarboolean _((OP *o)); | |
47 | static OP *too_few_arguments _((OP *o, char* name)); | |
48 | static OP *too_many_arguments _((OP *o, char* name)); | |
49 | static void null _((OP* o)); | |
bbce6d69 | 50 | static PADOFFSET pad_findlex _((char* name, PADOFFSET newoff, U32 seq, |
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])) { |
132 | name[3] = '\0'; | |
133 | name[2] = toCTRL(name[1]); | |
134 | name[1] = '^'; | |
135 | } | |
a0d0e21e LW |
136 | croak("Can't use global %s in \"my\"",name); |
137 | } | |
599cee73 | 138 | if (ckWARN(WARN_UNSAFE) && AvFILLp(PL_comppad_name) >= 0) { |
3280af22 NIS |
139 | SV **svp = AvARRAY(PL_comppad_name); |
140 | for (off = AvFILLp(PL_comppad_name); off > PL_comppad_name_floor; off--) { | |
b1cb66bf | 141 | if ((sv = svp[off]) |
3280af22 | 142 | && sv != &PL_sv_undef |
c53d7c7d | 143 | && (SvIVX(sv) == PAD_MAX || SvIVX(sv) == 0) |
b1cb66bf | 144 | && strEQ(name, SvPVX(sv))) |
145 | { | |
599cee73 | 146 | warner(WARN_UNSAFE, |
9fbbe825 | 147 | "\"my\" variable %s masks earlier declaration in same %s", |
c53d7c7d | 148 | name, (SvIVX(sv) == PAD_MAX ? "scope" : "statement")); |
b1cb66bf | 149 | break; |
150 | } | |
151 | } | |
152 | } | |
a0d0e21e LW |
153 | off = pad_alloc(OP_PADSV, SVs_PADMY); |
154 | sv = NEWSV(1102,0); | |
93a17b20 LW |
155 | sv_upgrade(sv, SVt_PVNV); |
156 | sv_setpv(sv, name); | |
3280af22 | 157 | if (PL_in_my_stash) { |
c750a3ec MB |
158 | if (*name != '$') |
159 | croak("Can't declare class for non-scalar %s in \"my\"",name); | |
160 | SvOBJECT_on(sv); | |
161 | (void)SvUPGRADE(sv, SVt_PVMG); | |
3280af22 NIS |
162 | SvSTASH(sv) = (HV*)SvREFCNT_inc(PL_in_my_stash); |
163 | PL_sv_objcount++; | |
c750a3ec | 164 | } |
3280af22 | 165 | av_store(PL_comppad_name, off, sv); |
c53d7c7d | 166 | SvNVX(sv) = (double)PAD_MAX; |
8990e307 | 167 | SvIVX(sv) = 0; /* Not yet introduced--see newSTATEOP */ |
3280af22 NIS |
168 | if (!PL_min_intro_pending) |
169 | PL_min_intro_pending = off; | |
170 | PL_max_intro_pending = off; | |
93a17b20 | 171 | if (*name == '@') |
3280af22 | 172 | av_store(PL_comppad, off, (SV*)newAV()); |
93a17b20 | 173 | else if (*name == '%') |
3280af22 NIS |
174 | av_store(PL_comppad, off, (SV*)newHV()); |
175 | SvPADMY_on(PL_curpad[off]); | |
93a17b20 LW |
176 | return off; |
177 | } | |
178 | ||
2680586e GS |
179 | #define FINDLEX_NOSEARCH 1 /* don't search outer contexts */ |
180 | ||
76e3520e | 181 | STATIC PADOFFSET |
2680586e GS |
182 | pad_findlex(char *name, PADOFFSET newoff, U32 seq, CV* startcv, I32 cx_ix, I32 saweval, |
183 | U32 flags) | |
93a17b20 | 184 | { |
11343788 | 185 | dTHR; |
748a9306 | 186 | CV *cv; |
93a17b20 LW |
187 | I32 off; |
188 | SV *sv; | |
93a17b20 | 189 | register I32 i; |
c09156bb | 190 | register PERL_CONTEXT *cx; |
93a17b20 | 191 | |
748a9306 | 192 | for (cv = startcv; cv; cv = CvOUTSIDE(cv)) { |
4fdae800 | 193 | AV *curlist = CvPADLIST(cv); |
194 | SV **svp = av_fetch(curlist, 0, FALSE); | |
748a9306 | 195 | AV *curname; |
4fdae800 | 196 | |
3280af22 | 197 | if (!svp || *svp == &PL_sv_undef) |
4633a7c4 | 198 | continue; |
748a9306 LW |
199 | curname = (AV*)*svp; |
200 | svp = AvARRAY(curname); | |
93965878 | 201 | for (off = AvFILLp(curname); off > 0; off--) { |
748a9306 | 202 | if ((sv = svp[off]) && |
3280af22 | 203 | sv != &PL_sv_undef && |
748a9306 | 204 | seq <= SvIVX(sv) && |
13826f2c | 205 | seq > I_32(SvNVX(sv)) && |
748a9306 LW |
206 | strEQ(SvPVX(sv), name)) |
207 | { | |
5f05dabc | 208 | I32 depth; |
209 | AV *oldpad; | |
210 | SV *oldsv; | |
211 | ||
212 | depth = CvDEPTH(cv); | |
213 | if (!depth) { | |
9607fc9c | 214 | if (newoff) { |
215 | if (SvFAKE(sv)) | |
216 | continue; | |
4fdae800 | 217 | return 0; /* don't clone from inactive stack frame */ |
9607fc9c | 218 | } |
5f05dabc | 219 | depth = 1; |
220 | } | |
221 | oldpad = (AV*)*av_fetch(curlist, depth, FALSE); | |
222 | oldsv = *av_fetch(oldpad, off, TRUE); | |
748a9306 | 223 | if (!newoff) { /* Not a mere clone operation. */ |
9607fc9c | 224 | SV *namesv = NEWSV(1103,0); |
748a9306 | 225 | newoff = pad_alloc(OP_PADSV, SVs_PADMY); |
9607fc9c | 226 | sv_upgrade(namesv, SVt_PVNV); |
227 | sv_setpv(namesv, name); | |
3280af22 NIS |
228 | av_store(PL_comppad_name, newoff, namesv); |
229 | SvNVX(namesv) = (double)PL_curcop->cop_seq; | |
c53d7c7d | 230 | SvIVX(namesv) = PAD_MAX; /* A ref, intro immediately */ |
9607fc9c | 231 | SvFAKE_on(namesv); /* A ref, not a real var */ |
87671ffc | 232 | if (SvOBJECT(sv)) { /* A typed var */ |
3d93dc8b GS |
233 | SvOBJECT_on(namesv); |
234 | (void)SvUPGRADE(namesv, SVt_PVMG); | |
87671ffc | 235 | SvSTASH(namesv) = (HV*)SvREFCNT_inc((SV*)SvSTASH(sv)); |
3d93dc8b GS |
236 | PL_sv_objcount++; |
237 | } | |
3280af22 | 238 | if (CvANON(PL_compcv) || SvTYPE(PL_compcv) == SVt_PVFM) { |
28757baa | 239 | /* "It's closures all the way down." */ |
3280af22 | 240 | CvCLONE_on(PL_compcv); |
54310121 | 241 | if (cv == startcv) { |
3280af22 | 242 | if (CvANON(PL_compcv)) |
54310121 | 243 | oldsv = Nullsv; /* no need to keep ref */ |
244 | } | |
245 | else { | |
28757baa | 246 | CV *bcv; |
247 | for (bcv = startcv; | |
248 | bcv && bcv != cv && !CvCLONE(bcv); | |
6b35e009 GS |
249 | bcv = CvOUTSIDE(bcv)) |
250 | { | |
28757baa | 251 | if (CvANON(bcv)) |
252 | CvCLONE_on(bcv); | |
253 | else { | |
6b35e009 GS |
254 | if (ckWARN(WARN_CLOSURE) |
255 | && !CvUNIQUE(bcv) && !CvUNIQUE(cv)) | |
256 | { | |
599cee73 | 257 | warner(WARN_CLOSURE, |
44a8e56a | 258 | "Variable \"%s\" may be unavailable", |
28757baa | 259 | name); |
6b35e009 | 260 | } |
28757baa | 261 | break; |
262 | } | |
263 | } | |
264 | } | |
265 | } | |
3280af22 | 266 | else if (!CvUNIQUE(PL_compcv)) { |
599cee73 PM |
267 | if (ckWARN(WARN_CLOSURE) && !SvFAKE(sv) && !CvUNIQUE(cv)) |
268 | warner(WARN_CLOSURE, | |
269 | "Variable \"%s\" will not stay shared", name); | |
5f05dabc | 270 | } |
748a9306 | 271 | } |
3280af22 | 272 | av_store(PL_comppad, newoff, SvREFCNT_inc(oldsv)); |
748a9306 LW |
273 | return newoff; |
274 | } | |
93a17b20 LW |
275 | } |
276 | } | |
277 | ||
2680586e GS |
278 | if (flags & FINDLEX_NOSEARCH) |
279 | return 0; | |
280 | ||
93a17b20 LW |
281 | /* Nothing in current lexical context--try eval's context, if any. |
282 | * This is necessary to let the perldb get at lexically scoped variables. | |
283 | * XXX This will also probably interact badly with eval tree caching. | |
284 | */ | |
285 | ||
748a9306 | 286 | for (i = cx_ix; i >= 0; i--) { |
93a17b20 | 287 | cx = &cxstack[i]; |
6b35e009 | 288 | switch (CxTYPE(cx)) { |
93a17b20 | 289 | default: |
748a9306 LW |
290 | if (i == 0 && saweval) { |
291 | seq = cxstack[saweval].blk_oldcop->cop_seq; | |
2680586e | 292 | return pad_findlex(name, newoff, seq, PL_main_cv, -1, saweval, 0); |
748a9306 | 293 | } |
93a17b20 LW |
294 | break; |
295 | case CXt_EVAL: | |
44a8e56a | 296 | switch (cx->blk_eval.old_op_type) { |
297 | case OP_ENTEREVAL: | |
6b35e009 GS |
298 | if (CxREALEVAL(cx)) |
299 | saweval = i; | |
44a8e56a | 300 | break; |
301 | case OP_REQUIRE: | |
302 | /* require must have its own scope */ | |
303 | return 0; | |
304 | } | |
93a17b20 LW |
305 | break; |
306 | case CXt_SUB: | |
307 | if (!saweval) | |
308 | return 0; | |
309 | cv = cx->blk_sub.cv; | |
3280af22 | 310 | if (PL_debstash && CvSTASH(cv) == PL_debstash) { /* ignore DB'* scope */ |
748a9306 | 311 | saweval = i; /* so we know where we were called from */ |
93a17b20 | 312 | continue; |
93a17b20 | 313 | } |
748a9306 | 314 | seq = cxstack[saweval].blk_oldcop->cop_seq; |
2680586e | 315 | return pad_findlex(name, newoff, seq, cv, i-1, saweval,FINDLEX_NOSEARCH); |
93a17b20 LW |
316 | } |
317 | } | |
318 | ||
748a9306 LW |
319 | return 0; |
320 | } | |
a0d0e21e | 321 | |
748a9306 | 322 | PADOFFSET |
8ac85365 | 323 | pad_findmy(char *name) |
748a9306 | 324 | { |
11343788 | 325 | dTHR; |
748a9306 | 326 | I32 off; |
54310121 | 327 | I32 pendoff = 0; |
748a9306 | 328 | SV *sv; |
3280af22 NIS |
329 | SV **svp = AvARRAY(PL_comppad_name); |
330 | U32 seq = PL_cop_seqmax; | |
6b35e009 | 331 | PERL_CONTEXT *cx; |
33b8ce05 | 332 | CV *outside; |
748a9306 | 333 | |
11343788 MB |
334 | #ifdef USE_THREADS |
335 | /* | |
336 | * Special case to get lexical (and hence per-thread) @_. | |
337 | * XXX I need to find out how to tell at parse-time whether use | |
338 | * of @_ should refer to a lexical (from a sub) or defgv (global | |
339 | * scope and maybe weird sub-ish things like formats). See | |
340 | * startsub in perly.y. It's possible that @_ could be lexical | |
341 | * (at least from subs) even in non-threaded perl. | |
342 | */ | |
343 | if (strEQ(name, "@_")) | |
344 | return 0; /* success. (NOT_IN_PAD indicates failure) */ | |
345 | #endif /* USE_THREADS */ | |
346 | ||
748a9306 | 347 | /* The one we're looking for is probably just before comppad_name_fill. */ |
3280af22 | 348 | for (off = AvFILLp(PL_comppad_name); off > 0; off--) { |
a0d0e21e | 349 | if ((sv = svp[off]) && |
3280af22 | 350 | sv != &PL_sv_undef && |
54310121 | 351 | (!SvIVX(sv) || |
352 | (seq <= SvIVX(sv) && | |
353 | seq > I_32(SvNVX(sv)))) && | |
a0d0e21e LW |
354 | strEQ(SvPVX(sv), name)) |
355 | { | |
54310121 | 356 | if (SvIVX(sv)) |
357 | return (PADOFFSET)off; | |
358 | pendoff = off; /* this pending def. will override import */ | |
a0d0e21e LW |
359 | } |
360 | } | |
748a9306 | 361 | |
33b8ce05 GS |
362 | outside = CvOUTSIDE(PL_compcv); |
363 | ||
364 | /* Check if if we're compiling an eval'', and adjust seq to be the | |
365 | * eval's seq number. This depends on eval'' having a non-null | |
366 | * CvOUTSIDE() while it is being compiled. The eval'' itself is | |
1aff0e91 GS |
367 | * identified by CvEVAL being true and CvGV being null. */ |
368 | if (outside && CvEVAL(PL_compcv) && !CvGV(PL_compcv) && cxstack_ix >= 0) { | |
6b35e009 GS |
369 | cx = &cxstack[cxstack_ix]; |
370 | if (CxREALEVAL(cx)) | |
371 | seq = cx->blk_oldcop->cop_seq; | |
372 | } | |
373 | ||
748a9306 | 374 | /* See if it's in a nested scope */ |
2680586e | 375 | off = pad_findlex(name, 0, seq, outside, cxstack_ix, 0, 0); |
54310121 | 376 | if (off) { |
377 | /* If there is a pending local definition, this new alias must die */ | |
378 | if (pendoff) | |
3280af22 | 379 | SvIVX(AvARRAY(PL_comppad_name)[off]) = seq; |
11343788 | 380 | return off; /* pad_findlex returns 0 for failure...*/ |
54310121 | 381 | } |
11343788 | 382 | return NOT_IN_PAD; /* ...but we return NOT_IN_PAD for failure */ |
93a17b20 LW |
383 | } |
384 | ||
385 | void | |
8ac85365 | 386 | pad_leavemy(I32 fill) |
93a17b20 LW |
387 | { |
388 | I32 off; | |
3280af22 | 389 | SV **svp = AvARRAY(PL_comppad_name); |
93a17b20 | 390 | SV *sv; |
3280af22 NIS |
391 | if (PL_min_intro_pending && fill < PL_min_intro_pending) { |
392 | for (off = PL_max_intro_pending; off >= PL_min_intro_pending; off--) { | |
393 | if ((sv = svp[off]) && sv != &PL_sv_undef) | |
8990e307 LW |
394 | warn("%s never introduced", SvPVX(sv)); |
395 | } | |
396 | } | |
397 | /* "Deintroduce" my variables that are leaving with this scope. */ | |
3280af22 | 398 | for (off = AvFILLp(PL_comppad_name); off > fill; off--) { |
c53d7c7d | 399 | if ((sv = svp[off]) && sv != &PL_sv_undef && SvIVX(sv) == PAD_MAX) |
3280af22 | 400 | SvIVX(sv) = PL_cop_seqmax; |
93a17b20 LW |
401 | } |
402 | } | |
403 | ||
404 | PADOFFSET | |
8ac85365 | 405 | pad_alloc(I32 optype, U32 tmptype) |
79072805 | 406 | { |
11343788 | 407 | dTHR; |
79072805 LW |
408 | SV *sv; |
409 | I32 retval; | |
410 | ||
3280af22 | 411 | if (AvARRAY(PL_comppad) != PL_curpad) |
463ee0b2 | 412 | croak("panic: pad_alloc"); |
3280af22 | 413 | if (PL_pad_reset_pending) |
a0d0e21e | 414 | pad_reset(); |
ed6116ce | 415 | if (tmptype & SVs_PADMY) { |
79072805 | 416 | do { |
3280af22 | 417 | sv = *av_fetch(PL_comppad, AvFILLp(PL_comppad) + 1, TRUE); |
ed6116ce | 418 | } while (SvPADBUSY(sv)); /* need a fresh one */ |
3280af22 | 419 | retval = AvFILLp(PL_comppad); |
79072805 LW |
420 | } |
421 | else { | |
3280af22 NIS |
422 | SV **names = AvARRAY(PL_comppad_name); |
423 | SSize_t names_fill = AvFILLp(PL_comppad_name); | |
bbce6d69 | 424 | for (;;) { |
425 | /* | |
426 | * "foreach" index vars temporarily become aliases to non-"my" | |
427 | * values. Thus we must skip, not just pad values that are | |
428 | * marked as current pad values, but also those with names. | |
429 | */ | |
3280af22 NIS |
430 | if (++PL_padix <= names_fill && |
431 | (sv = names[PL_padix]) && sv != &PL_sv_undef) | |
bbce6d69 | 432 | continue; |
3280af22 | 433 | sv = *av_fetch(PL_comppad, PL_padix, TRUE); |
bbce6d69 | 434 | if (!(SvFLAGS(sv) & (SVs_PADTMP|SVs_PADMY))) |
435 | break; | |
436 | } | |
3280af22 | 437 | retval = PL_padix; |
79072805 | 438 | } |
8990e307 | 439 | SvFLAGS(sv) |= tmptype; |
3280af22 | 440 | PL_curpad = AvARRAY(PL_comppad); |
11343788 | 441 | #ifdef USE_THREADS |
5dc0d613 | 442 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx alloc %ld for %s\n", |
533c011a | 443 | (unsigned long) thr, (unsigned long) PL_curpad, |
22c35a8c | 444 | (long) retval, PL_op_name[optype])); |
11343788 | 445 | #else |
d9bb4600 | 446 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx alloc %ld for %s\n", |
3280af22 | 447 | (unsigned long) PL_curpad, |
22c35a8c | 448 | (long) retval, PL_op_name[optype])); |
11343788 | 449 | #endif /* USE_THREADS */ |
79072805 LW |
450 | return (PADOFFSET)retval; |
451 | } | |
452 | ||
453 | SV * | |
8990e307 | 454 | pad_sv(PADOFFSET po) |
79072805 | 455 | { |
11343788 MB |
456 | dTHR; |
457 | #ifdef USE_THREADS | |
5dc0d613 | 458 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx sv %d\n", |
533c011a | 459 | (unsigned long) thr, (unsigned long) PL_curpad, po)); |
11343788 | 460 | #else |
79072805 | 461 | if (!po) |
463ee0b2 | 462 | croak("panic: pad_sv po"); |
d9bb4600 | 463 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx sv %d\n", |
3280af22 | 464 | (unsigned long) PL_curpad, po)); |
11343788 | 465 | #endif /* USE_THREADS */ |
3280af22 | 466 | return PL_curpad[po]; /* eventually we'll turn this into a macro */ |
79072805 LW |
467 | } |
468 | ||
469 | void | |
8990e307 | 470 | pad_free(PADOFFSET po) |
79072805 | 471 | { |
11343788 | 472 | dTHR; |
3280af22 | 473 | if (!PL_curpad) |
a0d0e21e | 474 | return; |
3280af22 | 475 | if (AvARRAY(PL_comppad) != PL_curpad) |
463ee0b2 | 476 | croak("panic: pad_free curpad"); |
79072805 | 477 | if (!po) |
463ee0b2 | 478 | croak("panic: pad_free po"); |
11343788 | 479 | #ifdef USE_THREADS |
5dc0d613 | 480 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx free %d\n", |
533c011a | 481 | (unsigned long) thr, (unsigned long) PL_curpad, po)); |
11343788 | 482 | #else |
d9bb4600 | 483 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx free %d\n", |
3280af22 | 484 | (unsigned long) PL_curpad, po)); |
11343788 | 485 | #endif /* USE_THREADS */ |
3280af22 NIS |
486 | if (PL_curpad[po] && PL_curpad[po] != &PL_sv_undef) |
487 | SvPADTMP_off(PL_curpad[po]); | |
488 | if ((I32)po < PL_padix) | |
489 | PL_padix = po - 1; | |
79072805 LW |
490 | } |
491 | ||
492 | void | |
8990e307 | 493 | pad_swipe(PADOFFSET po) |
79072805 | 494 | { |
11343788 | 495 | dTHR; |
3280af22 | 496 | if (AvARRAY(PL_comppad) != PL_curpad) |
463ee0b2 | 497 | croak("panic: pad_swipe curpad"); |
79072805 | 498 | if (!po) |
463ee0b2 | 499 | croak("panic: pad_swipe po"); |
11343788 | 500 | #ifdef USE_THREADS |
5dc0d613 | 501 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx swipe %d\n", |
533c011a | 502 | (unsigned long) thr, (unsigned long) PL_curpad, po)); |
11343788 | 503 | #else |
d9bb4600 | 504 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx swipe %d\n", |
3280af22 | 505 | (unsigned long) PL_curpad, po)); |
11343788 | 506 | #endif /* USE_THREADS */ |
3280af22 NIS |
507 | SvPADTMP_off(PL_curpad[po]); |
508 | PL_curpad[po] = NEWSV(1107,0); | |
509 | SvPADTMP_on(PL_curpad[po]); | |
510 | if ((I32)po < PL_padix) | |
511 | PL_padix = po - 1; | |
79072805 LW |
512 | } |
513 | ||
d9bb4600 GS |
514 | /* XXX pad_reset() is currently disabled because it results in serious bugs. |
515 | * It causes pad temp TARGs to be shared between OPs. Since TARGs are pushed | |
516 | * on the stack by OPs that use them, there are several ways to get an alias | |
517 | * to a shared TARG. Such an alias will change randomly and unpredictably. | |
518 | * We avoid doing this until we can think of a Better Way. | |
519 | * GSAR 97-10-29 */ | |
79072805 | 520 | void |
8ac85365 | 521 | pad_reset(void) |
79072805 | 522 | { |
d9bb4600 | 523 | #ifdef USE_BROKEN_PAD_RESET |
11343788 | 524 | dTHR; |
79072805 LW |
525 | register I32 po; |
526 | ||
6b88bc9c | 527 | if (AvARRAY(PL_comppad) != PL_curpad) |
463ee0b2 | 528 | croak("panic: pad_reset curpad"); |
11343788 | 529 | #ifdef USE_THREADS |
5dc0d613 | 530 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx reset\n", |
6b88bc9c | 531 | (unsigned long) thr, (unsigned long) PL_curpad)); |
11343788 | 532 | #else |
d9bb4600 | 533 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx reset\n", |
6b88bc9c | 534 | (unsigned long) PL_curpad)); |
11343788 | 535 | #endif /* USE_THREADS */ |
6b88bc9c GS |
536 | if (!PL_tainting) { /* Can't mix tainted and non-tainted temporaries. */ |
537 | for (po = AvMAX(PL_comppad); po > PL_padix_floor; po--) { | |
538 | if (PL_curpad[po] && !SvIMMORTAL(PL_curpad[po])) | |
539 | SvPADTMP_off(PL_curpad[po]); | |
748a9306 | 540 | } |
6b88bc9c | 541 | PL_padix = PL_padix_floor; |
79072805 | 542 | } |
d9bb4600 | 543 | #endif |
3280af22 | 544 | PL_pad_reset_pending = FALSE; |
79072805 LW |
545 | } |
546 | ||
a863c7d1 | 547 | #ifdef USE_THREADS |
54b9620d | 548 | /* find_threadsv is not reentrant */ |
a863c7d1 | 549 | PADOFFSET |
08105a92 | 550 | find_threadsv(const char *name) |
a863c7d1 MB |
551 | { |
552 | dTHR; | |
553 | char *p; | |
554 | PADOFFSET key; | |
554b3eca | 555 | SV **svp; |
54b9620d | 556 | /* We currently only handle names of a single character */ |
533c011a | 557 | p = strchr(PL_threadsv_names, *name); |
a863c7d1 MB |
558 | if (!p) |
559 | return NOT_IN_PAD; | |
533c011a | 560 | key = p - PL_threadsv_names; |
2d8e6c8d | 561 | MUTEX_LOCK(&thr->mutex); |
54b9620d | 562 | svp = av_fetch(thr->threadsv, key, FALSE); |
2d8e6c8d GS |
563 | if (svp) |
564 | MUTEX_UNLOCK(&thr->mutex); | |
565 | else { | |
554b3eca | 566 | SV *sv = NEWSV(0, 0); |
54b9620d | 567 | av_store(thr->threadsv, key, sv); |
940cb80d | 568 | thr->threadsvp = AvARRAY(thr->threadsv); |
2d8e6c8d | 569 | MUTEX_UNLOCK(&thr->mutex); |
554b3eca MB |
570 | /* |
571 | * Some magic variables used to be automagically initialised | |
572 | * in gv_fetchpv. Those which are now per-thread magicals get | |
573 | * initialised here instead. | |
574 | */ | |
575 | switch (*name) { | |
54b9620d MB |
576 | case '_': |
577 | break; | |
554b3eca MB |
578 | case ';': |
579 | sv_setpv(sv, "\034"); | |
54b9620d | 580 | sv_magic(sv, 0, 0, name, 1); |
554b3eca | 581 | break; |
c277df42 IZ |
582 | case '&': |
583 | case '`': | |
584 | case '\'': | |
533c011a | 585 | PL_sawampersand = TRUE; |
a3f914c5 GS |
586 | /* FALL THROUGH */ |
587 | case '1': | |
588 | case '2': | |
589 | case '3': | |
590 | case '4': | |
591 | case '5': | |
592 | case '6': | |
593 | case '7': | |
594 | case '8': | |
595 | case '9': | |
c277df42 | 596 | SvREADONLY_on(sv); |
d8b5173a | 597 | /* FALL THROUGH */ |
067391ea GS |
598 | |
599 | /* XXX %! tied to Errno.pm needs to be added here. | |
600 | * See gv_fetchpv(). */ | |
601 | /* case '!': */ | |
602 | ||
54b9620d MB |
603 | default: |
604 | sv_magic(sv, 0, 0, name, 1); | |
554b3eca | 605 | } |
8b73bbec | 606 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), |
54b9620d | 607 | "find_threadsv: new SV %p for $%s%c\n", |
554b3eca MB |
608 | sv, (*name < 32) ? "^" : "", |
609 | (*name < 32) ? toCTRL(*name) : *name)); | |
a863c7d1 MB |
610 | } |
611 | return key; | |
612 | } | |
613 | #endif /* USE_THREADS */ | |
614 | ||
79072805 LW |
615 | /* Destructor */ |
616 | ||
617 | void | |
8ac85365 | 618 | op_free(OP *o) |
79072805 | 619 | { |
85e6fe83 | 620 | register OP *kid, *nextkid; |
79072805 | 621 | |
5dc0d613 | 622 | if (!o || o->op_seq == (U16)-1) |
79072805 LW |
623 | return; |
624 | ||
11343788 MB |
625 | if (o->op_flags & OPf_KIDS) { |
626 | for (kid = cUNOPo->op_first; kid; kid = nextkid) { | |
85e6fe83 | 627 | nextkid = kid->op_sibling; /* Get before next freeing kid */ |
79072805 | 628 | op_free(kid); |
85e6fe83 | 629 | } |
79072805 LW |
630 | } |
631 | ||
11343788 | 632 | switch (o->op_type) { |
8990e307 | 633 | case OP_NULL: |
11343788 | 634 | o->op_targ = 0; /* Was holding old type, if any. */ |
8990e307 | 635 | break; |
a0d0e21e | 636 | case OP_ENTEREVAL: |
11343788 | 637 | o->op_targ = 0; /* Was holding hints. */ |
a0d0e21e | 638 | break; |
554b3eca | 639 | #ifdef USE_THREADS |
8dd3ba40 SM |
640 | case OP_ENTERITER: |
641 | if (!(o->op_flags & OPf_SPECIAL)) | |
642 | break; | |
643 | /* FALL THROUGH */ | |
2faa37cc | 644 | case OP_THREADSV: |
54b9620d | 645 | o->op_targ = 0; /* Was holding index into thr->threadsv AV. */ |
554b3eca MB |
646 | break; |
647 | #endif /* USE_THREADS */ | |
a6006777 | 648 | default: |
ac4c12e7 | 649 | if (!(o->op_flags & OPf_REF) |
22c35a8c | 650 | || (PL_check[o->op_type] != FUNC_NAME_TO_PTR(ck_ftst))) |
a6006777 | 651 | break; |
652 | /* FALL THROUGH */ | |
463ee0b2 | 653 | case OP_GVSV: |
79072805 | 654 | case OP_GV: |
a6006777 | 655 | case OP_AELEMFAST: |
11343788 | 656 | SvREFCNT_dec(cGVOPo->op_gv); |
8990e307 LW |
657 | break; |
658 | case OP_NEXTSTATE: | |
659 | case OP_DBSTATE: | |
5196be3e | 660 | Safefree(cCOPo->cop_label); |
11343788 | 661 | SvREFCNT_dec(cCOPo->cop_filegv); |
599cee73 PM |
662 | if (cCOPo->cop_warnings != WARN_NONE && cCOPo->cop_warnings != WARN_ALL) |
663 | SvREFCNT_dec(cCOPo->cop_warnings); | |
79072805 LW |
664 | break; |
665 | case OP_CONST: | |
11343788 | 666 | SvREFCNT_dec(cSVOPo->op_sv); |
79072805 | 667 | break; |
748a9306 LW |
668 | case OP_GOTO: |
669 | case OP_NEXT: | |
670 | case OP_LAST: | |
671 | case OP_REDO: | |
11343788 | 672 | if (o->op_flags & (OPf_SPECIAL|OPf_STACKED|OPf_KIDS)) |
748a9306 LW |
673 | break; |
674 | /* FALL THROUGH */ | |
a0d0e21e | 675 | case OP_TRANS: |
a0ed51b3 LW |
676 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) |
677 | SvREFCNT_dec(cSVOPo->op_sv); | |
678 | else | |
679 | Safefree(cPVOPo->op_pv); | |
a0d0e21e LW |
680 | break; |
681 | case OP_SUBST: | |
11343788 | 682 | op_free(cPMOPo->op_pmreplroot); |
a0d0e21e | 683 | /* FALL THROUGH */ |
748a9306 | 684 | case OP_PUSHRE: |
a0d0e21e | 685 | case OP_MATCH: |
8782bef2 | 686 | case OP_QR: |
c277df42 | 687 | ReREFCNT_dec(cPMOPo->op_pmregexp); |
a0d0e21e | 688 | break; |
79072805 LW |
689 | } |
690 | ||
11343788 MB |
691 | if (o->op_targ > 0) |
692 | pad_free(o->op_targ); | |
8990e307 | 693 | |
11343788 | 694 | Safefree(o); |
79072805 LW |
695 | } |
696 | ||
76e3520e | 697 | STATIC void |
8ac85365 | 698 | null(OP *o) |
8990e307 | 699 | { |
54b9620d | 700 | if (o->op_type != OP_NULL && o->op_type != OP_THREADSV && o->op_targ > 0) |
11343788 MB |
701 | pad_free(o->op_targ); |
702 | o->op_targ = o->op_type; | |
703 | o->op_type = OP_NULL; | |
22c35a8c | 704 | o->op_ppaddr = PL_ppaddr[OP_NULL]; |
8990e307 LW |
705 | } |
706 | ||
79072805 LW |
707 | /* Contextualizers */ |
708 | ||
463ee0b2 | 709 | #define LINKLIST(o) ((o)->op_next ? (o)->op_next : linklist((OP*)o)) |
79072805 LW |
710 | |
711 | OP * | |
8ac85365 | 712 | linklist(OP *o) |
79072805 LW |
713 | { |
714 | register OP *kid; | |
715 | ||
11343788 MB |
716 | if (o->op_next) |
717 | return o->op_next; | |
79072805 LW |
718 | |
719 | /* establish postfix order */ | |
11343788 MB |
720 | if (cUNOPo->op_first) { |
721 | o->op_next = LINKLIST(cUNOPo->op_first); | |
722 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) { | |
79072805 LW |
723 | if (kid->op_sibling) |
724 | kid->op_next = LINKLIST(kid->op_sibling); | |
725 | else | |
11343788 | 726 | kid->op_next = o; |
79072805 LW |
727 | } |
728 | } | |
729 | else | |
11343788 | 730 | o->op_next = o; |
79072805 | 731 | |
11343788 | 732 | return o->op_next; |
79072805 LW |
733 | } |
734 | ||
735 | OP * | |
8ac85365 | 736 | scalarkids(OP *o) |
79072805 LW |
737 | { |
738 | OP *kid; | |
11343788 MB |
739 | if (o && o->op_flags & OPf_KIDS) { |
740 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
79072805 LW |
741 | scalar(kid); |
742 | } | |
11343788 | 743 | return o; |
79072805 LW |
744 | } |
745 | ||
76e3520e | 746 | STATIC OP * |
8ac85365 | 747 | scalarboolean(OP *o) |
8990e307 | 748 | { |
d008e5eb | 749 | if (o->op_type == OP_SASSIGN && cBINOPo->op_first->op_type == OP_CONST) { |
0f15f207 | 750 | dTHR; |
d008e5eb GS |
751 | if (ckWARN(WARN_SYNTAX)) { |
752 | line_t oldline = PL_curcop->cop_line; | |
a0d0e21e | 753 | |
d008e5eb GS |
754 | if (PL_copline != NOLINE) |
755 | PL_curcop->cop_line = PL_copline; | |
756 | warner(WARN_SYNTAX, "Found = in conditional, should be =="); | |
757 | PL_curcop->cop_line = oldline; | |
758 | } | |
a0d0e21e | 759 | } |
11343788 | 760 | return scalar(o); |
8990e307 LW |
761 | } |
762 | ||
763 | OP * | |
8ac85365 | 764 | scalar(OP *o) |
79072805 LW |
765 | { |
766 | OP *kid; | |
767 | ||
a0d0e21e | 768 | /* assumes no premature commitment */ |
3280af22 | 769 | if (!o || (o->op_flags & OPf_WANT) || PL_error_count |
5dc0d613 | 770 | || o->op_type == OP_RETURN) |
11343788 | 771 | return o; |
79072805 | 772 | |
5dc0d613 | 773 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_SCALAR; |
79072805 | 774 | |
11343788 | 775 | switch (o->op_type) { |
79072805 | 776 | case OP_REPEAT: |
11343788 MB |
777 | if (o->op_private & OPpREPEAT_DOLIST) |
778 | null(((LISTOP*)cBINOPo->op_first)->op_first); | |
779 | scalar(cBINOPo->op_first); | |
8990e307 | 780 | break; |
79072805 LW |
781 | case OP_OR: |
782 | case OP_AND: | |
783 | case OP_COND_EXPR: | |
11343788 | 784 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
8990e307 | 785 | scalar(kid); |
79072805 | 786 | break; |
a0d0e21e | 787 | case OP_SPLIT: |
11343788 | 788 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e LW |
789 | if (!kPMOP->op_pmreplroot) |
790 | deprecate("implicit split to @_"); | |
791 | } | |
792 | /* FALL THROUGH */ | |
79072805 | 793 | case OP_MATCH: |
8782bef2 | 794 | case OP_QR: |
79072805 LW |
795 | case OP_SUBST: |
796 | case OP_NULL: | |
8990e307 | 797 | default: |
11343788 MB |
798 | if (o->op_flags & OPf_KIDS) { |
799 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) | |
8990e307 LW |
800 | scalar(kid); |
801 | } | |
79072805 LW |
802 | break; |
803 | case OP_LEAVE: | |
804 | case OP_LEAVETRY: | |
5dc0d613 | 805 | kid = cLISTOPo->op_first; |
54310121 | 806 | scalar(kid); |
807 | while (kid = kid->op_sibling) { | |
808 | if (kid->op_sibling) | |
809 | scalarvoid(kid); | |
810 | else | |
811 | scalar(kid); | |
812 | } | |
3280af22 | 813 | WITH_THR(PL_curcop = &PL_compiling); |
54310121 | 814 | break; |
748a9306 | 815 | case OP_SCOPE: |
79072805 | 816 | case OP_LINESEQ: |
8990e307 | 817 | case OP_LIST: |
11343788 | 818 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
819 | if (kid->op_sibling) |
820 | scalarvoid(kid); | |
821 | else | |
822 | scalar(kid); | |
823 | } | |
3280af22 | 824 | WITH_THR(PL_curcop = &PL_compiling); |
79072805 LW |
825 | break; |
826 | } | |
11343788 | 827 | return o; |
79072805 LW |
828 | } |
829 | ||
830 | OP * | |
8ac85365 | 831 | scalarvoid(OP *o) |
79072805 LW |
832 | { |
833 | OP *kid; | |
8990e307 LW |
834 | char* useless = 0; |
835 | SV* sv; | |
79072805 | 836 | |
54310121 | 837 | /* assumes no premature commitment */ |
68c73484 JH |
838 | U8 want = o->op_flags & OPf_WANT; |
839 | if (!o || (want && want != OPf_WANT_SCALAR) || PL_error_count | |
5dc0d613 | 840 | || o->op_type == OP_RETURN) |
11343788 | 841 | return o; |
79072805 | 842 | |
5dc0d613 | 843 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_VOID; |
79072805 | 844 | |
11343788 | 845 | switch (o->op_type) { |
79072805 | 846 | default: |
22c35a8c | 847 | if (!(PL_opargs[o->op_type] & OA_FOLDCONST)) |
8990e307 | 848 | break; |
36477c24 | 849 | /* FALL THROUGH */ |
850 | case OP_REPEAT: | |
11343788 | 851 | if (o->op_flags & OPf_STACKED) |
8990e307 | 852 | break; |
5d82c453 GA |
853 | goto func_ops; |
854 | case OP_SUBSTR: | |
855 | if (o->op_private == 4) | |
856 | break; | |
8990e307 LW |
857 | /* FALL THROUGH */ |
858 | case OP_GVSV: | |
859 | case OP_WANTARRAY: | |
860 | case OP_GV: | |
861 | case OP_PADSV: | |
862 | case OP_PADAV: | |
863 | case OP_PADHV: | |
864 | case OP_PADANY: | |
865 | case OP_AV2ARYLEN: | |
8990e307 | 866 | case OP_REF: |
a0d0e21e LW |
867 | case OP_REFGEN: |
868 | case OP_SREFGEN: | |
8990e307 LW |
869 | case OP_DEFINED: |
870 | case OP_HEX: | |
871 | case OP_OCT: | |
872 | case OP_LENGTH: | |
8990e307 LW |
873 | case OP_VEC: |
874 | case OP_INDEX: | |
875 | case OP_RINDEX: | |
876 | case OP_SPRINTF: | |
877 | case OP_AELEM: | |
878 | case OP_AELEMFAST: | |
879 | case OP_ASLICE: | |
8990e307 LW |
880 | case OP_HELEM: |
881 | case OP_HSLICE: | |
882 | case OP_UNPACK: | |
883 | case OP_PACK: | |
8990e307 LW |
884 | case OP_JOIN: |
885 | case OP_LSLICE: | |
886 | case OP_ANONLIST: | |
887 | case OP_ANONHASH: | |
888 | case OP_SORT: | |
889 | case OP_REVERSE: | |
890 | case OP_RANGE: | |
891 | case OP_FLIP: | |
892 | case OP_FLOP: | |
893 | case OP_CALLER: | |
894 | case OP_FILENO: | |
895 | case OP_EOF: | |
896 | case OP_TELL: | |
897 | case OP_GETSOCKNAME: | |
898 | case OP_GETPEERNAME: | |
899 | case OP_READLINK: | |
900 | case OP_TELLDIR: | |
901 | case OP_GETPPID: | |
902 | case OP_GETPGRP: | |
903 | case OP_GETPRIORITY: | |
904 | case OP_TIME: | |
905 | case OP_TMS: | |
906 | case OP_LOCALTIME: | |
907 | case OP_GMTIME: | |
908 | case OP_GHBYNAME: | |
909 | case OP_GHBYADDR: | |
910 | case OP_GHOSTENT: | |
911 | case OP_GNBYNAME: | |
912 | case OP_GNBYADDR: | |
913 | case OP_GNETENT: | |
914 | case OP_GPBYNAME: | |
915 | case OP_GPBYNUMBER: | |
916 | case OP_GPROTOENT: | |
917 | case OP_GSBYNAME: | |
918 | case OP_GSBYPORT: | |
919 | case OP_GSERVENT: | |
920 | case OP_GPWNAM: | |
921 | case OP_GPWUID: | |
922 | case OP_GGRNAM: | |
923 | case OP_GGRGID: | |
924 | case OP_GETLOGIN: | |
5d82c453 | 925 | func_ops: |
11343788 | 926 | if (!(o->op_private & OPpLVAL_INTRO)) |
22c35a8c | 927 | useless = PL_op_desc[o->op_type]; |
8990e307 LW |
928 | break; |
929 | ||
930 | case OP_RV2GV: | |
931 | case OP_RV2SV: | |
932 | case OP_RV2AV: | |
933 | case OP_RV2HV: | |
11343788 MB |
934 | if (!(o->op_private & OPpLVAL_INTRO) && |
935 | (!o->op_sibling || o->op_sibling->op_type != OP_READLINE)) | |
8990e307 LW |
936 | useless = "a variable"; |
937 | break; | |
79072805 | 938 | |
93a17b20 | 939 | case OP_NEXTSTATE: |
8990e307 | 940 | case OP_DBSTATE: |
3280af22 | 941 | WITH_THR(PL_curcop = ((COP*)o)); /* for warning below */ |
93a17b20 LW |
942 | break; |
943 | ||
79072805 | 944 | case OP_CONST: |
11343788 | 945 | sv = cSVOPo->op_sv; |
d008e5eb GS |
946 | { |
947 | dTHR; | |
948 | if (ckWARN(WARN_VOID)) { | |
949 | useless = "a constant"; | |
950 | if (SvNIOK(sv) && (SvNV(sv) == 0.0 || SvNV(sv) == 1.0)) | |
951 | useless = 0; | |
952 | else if (SvPOK(sv)) { | |
953 | if (strnEQ(SvPVX(sv), "di", 2) || | |
954 | strnEQ(SvPVX(sv), "ds", 2) || | |
955 | strnEQ(SvPVX(sv), "ig", 2)) | |
956 | useless = 0; | |
957 | } | |
8990e307 LW |
958 | } |
959 | } | |
11343788 | 960 | null(o); /* don't execute a constant */ |
8990e307 | 961 | SvREFCNT_dec(sv); /* don't even remember it */ |
79072805 LW |
962 | break; |
963 | ||
964 | case OP_POSTINC: | |
11343788 | 965 | o->op_type = OP_PREINC; /* pre-increment is faster */ |
22c35a8c | 966 | o->op_ppaddr = PL_ppaddr[OP_PREINC]; |
79072805 LW |
967 | break; |
968 | ||
969 | case OP_POSTDEC: | |
11343788 | 970 | o->op_type = OP_PREDEC; /* pre-decrement is faster */ |
22c35a8c | 971 | o->op_ppaddr = PL_ppaddr[OP_PREDEC]; |
79072805 LW |
972 | break; |
973 | ||
79072805 LW |
974 | case OP_OR: |
975 | case OP_AND: | |
976 | case OP_COND_EXPR: | |
11343788 | 977 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
978 | scalarvoid(kid); |
979 | break; | |
5aabfad6 | 980 | |
a0d0e21e | 981 | case OP_NULL: |
11343788 | 982 | if (o->op_targ == OP_NEXTSTATE || o->op_targ == OP_DBSTATE) |
3280af22 | 983 | WITH_THR(PL_curcop = ((COP*)o)); /* for warning below */ |
11343788 | 984 | if (o->op_flags & OPf_STACKED) |
a0d0e21e | 985 | break; |
5aabfad6 | 986 | /* FALL THROUGH */ |
79072805 LW |
987 | case OP_ENTERTRY: |
988 | case OP_ENTER: | |
989 | case OP_SCALAR: | |
11343788 | 990 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 991 | break; |
54310121 | 992 | /* FALL THROUGH */ |
463ee0b2 | 993 | case OP_SCOPE: |
79072805 LW |
994 | case OP_LEAVE: |
995 | case OP_LEAVETRY: | |
a0d0e21e | 996 | case OP_LEAVELOOP: |
79072805 | 997 | case OP_LINESEQ: |
79072805 | 998 | case OP_LIST: |
11343788 | 999 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
1000 | scalarvoid(kid); |
1001 | break; | |
c90c0ff4 | 1002 | case OP_ENTEREVAL: |
5196be3e | 1003 | scalarkids(o); |
c90c0ff4 | 1004 | break; |
5aabfad6 | 1005 | case OP_REQUIRE: |
c90c0ff4 | 1006 | /* all requires must return a boolean value */ |
5196be3e MB |
1007 | o->op_flags &= ~OPf_WANT; |
1008 | return scalar(o); | |
a0d0e21e | 1009 | case OP_SPLIT: |
11343788 | 1010 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e LW |
1011 | if (!kPMOP->op_pmreplroot) |
1012 | deprecate("implicit split to @_"); | |
1013 | } | |
1014 | break; | |
79072805 | 1015 | } |
d008e5eb GS |
1016 | if (useless) { |
1017 | dTHR; | |
1018 | if (ckWARN(WARN_VOID)) | |
1019 | warner(WARN_VOID, "Useless use of %s in void context", useless); | |
1020 | } | |
11343788 | 1021 | return o; |
79072805 LW |
1022 | } |
1023 | ||
1024 | OP * | |
8ac85365 | 1025 | listkids(OP *o) |
79072805 LW |
1026 | { |
1027 | OP *kid; | |
11343788 MB |
1028 | if (o && o->op_flags & OPf_KIDS) { |
1029 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
79072805 LW |
1030 | list(kid); |
1031 | } | |
11343788 | 1032 | return o; |
79072805 LW |
1033 | } |
1034 | ||
1035 | OP * | |
8ac85365 | 1036 | list(OP *o) |
79072805 LW |
1037 | { |
1038 | OP *kid; | |
1039 | ||
a0d0e21e | 1040 | /* assumes no premature commitment */ |
3280af22 | 1041 | if (!o || (o->op_flags & OPf_WANT) || PL_error_count |
5dc0d613 | 1042 | || o->op_type == OP_RETURN) |
11343788 | 1043 | return o; |
79072805 | 1044 | |
5dc0d613 | 1045 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_LIST; |
79072805 | 1046 | |
11343788 | 1047 | switch (o->op_type) { |
79072805 LW |
1048 | case OP_FLOP: |
1049 | case OP_REPEAT: | |
11343788 | 1050 | list(cBINOPo->op_first); |
79072805 LW |
1051 | break; |
1052 | case OP_OR: | |
1053 | case OP_AND: | |
1054 | case OP_COND_EXPR: | |
11343788 | 1055 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
1056 | list(kid); |
1057 | break; | |
1058 | default: | |
1059 | case OP_MATCH: | |
8782bef2 | 1060 | case OP_QR: |
79072805 LW |
1061 | case OP_SUBST: |
1062 | case OP_NULL: | |
11343788 | 1063 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1064 | break; |
11343788 MB |
1065 | if (!o->op_next && cUNOPo->op_first->op_type == OP_FLOP) { |
1066 | list(cBINOPo->op_first); | |
1067 | return gen_constant_list(o); | |
79072805 LW |
1068 | } |
1069 | case OP_LIST: | |
11343788 | 1070 | listkids(o); |
79072805 LW |
1071 | break; |
1072 | case OP_LEAVE: | |
1073 | case OP_LEAVETRY: | |
5dc0d613 | 1074 | kid = cLISTOPo->op_first; |
54310121 | 1075 | list(kid); |
1076 | while (kid = kid->op_sibling) { | |
1077 | if (kid->op_sibling) | |
1078 | scalarvoid(kid); | |
1079 | else | |
1080 | list(kid); | |
1081 | } | |
3280af22 | 1082 | WITH_THR(PL_curcop = &PL_compiling); |
54310121 | 1083 | break; |
748a9306 | 1084 | case OP_SCOPE: |
79072805 | 1085 | case OP_LINESEQ: |
11343788 | 1086 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
1087 | if (kid->op_sibling) |
1088 | scalarvoid(kid); | |
1089 | else | |
1090 | list(kid); | |
1091 | } | |
3280af22 | 1092 | WITH_THR(PL_curcop = &PL_compiling); |
79072805 | 1093 | break; |
c90c0ff4 | 1094 | case OP_REQUIRE: |
1095 | /* all requires must return a boolean value */ | |
5196be3e MB |
1096 | o->op_flags &= ~OPf_WANT; |
1097 | return scalar(o); | |
79072805 | 1098 | } |
11343788 | 1099 | return o; |
79072805 LW |
1100 | } |
1101 | ||
1102 | OP * | |
8ac85365 | 1103 | scalarseq(OP *o) |
79072805 LW |
1104 | { |
1105 | OP *kid; | |
1106 | ||
11343788 MB |
1107 | if (o) { |
1108 | if (o->op_type == OP_LINESEQ || | |
1109 | o->op_type == OP_SCOPE || | |
1110 | o->op_type == OP_LEAVE || | |
1111 | o->op_type == OP_LEAVETRY) | |
463ee0b2 | 1112 | { |
0f15f207 | 1113 | dTHR; |
11343788 | 1114 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
ed6116ce | 1115 | if (kid->op_sibling) { |
463ee0b2 | 1116 | scalarvoid(kid); |
ed6116ce | 1117 | } |
463ee0b2 | 1118 | } |
3280af22 | 1119 | PL_curcop = &PL_compiling; |
79072805 | 1120 | } |
11343788 | 1121 | o->op_flags &= ~OPf_PARENS; |
3280af22 | 1122 | if (PL_hints & HINT_BLOCK_SCOPE) |
11343788 | 1123 | o->op_flags |= OPf_PARENS; |
79072805 | 1124 | } |
8990e307 | 1125 | else |
11343788 MB |
1126 | o = newOP(OP_STUB, 0); |
1127 | return o; | |
79072805 LW |
1128 | } |
1129 | ||
76e3520e | 1130 | STATIC OP * |
8ac85365 | 1131 | modkids(OP *o, I32 type) |
79072805 LW |
1132 | { |
1133 | OP *kid; | |
11343788 MB |
1134 | if (o && o->op_flags & OPf_KIDS) { |
1135 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
463ee0b2 | 1136 | mod(kid, type); |
79072805 | 1137 | } |
11343788 | 1138 | return o; |
79072805 LW |
1139 | } |
1140 | ||
79072805 | 1141 | OP * |
8ac85365 | 1142 | mod(OP *o, I32 type) |
79072805 | 1143 | { |
11343788 | 1144 | dTHR; |
79072805 LW |
1145 | OP *kid; |
1146 | SV *sv; | |
2d8e6c8d | 1147 | STRLEN n_a; |
79072805 | 1148 | |
3280af22 | 1149 | if (!o || PL_error_count) |
11343788 | 1150 | return o; |
79072805 | 1151 | |
11343788 | 1152 | switch (o->op_type) { |
68dc0745 | 1153 | case OP_UNDEF: |
3280af22 | 1154 | PL_modcount++; |
5dc0d613 | 1155 | return o; |
a0d0e21e | 1156 | case OP_CONST: |
11343788 | 1157 | if (!(o->op_private & (OPpCONST_ARYBASE))) |
a0d0e21e | 1158 | goto nomod; |
3280af22 NIS |
1159 | if (PL_eval_start && PL_eval_start->op_type == OP_CONST) { |
1160 | PL_compiling.cop_arybase = (I32)SvIV(((SVOP*)PL_eval_start)->op_sv); | |
1161 | PL_eval_start = 0; | |
a0d0e21e LW |
1162 | } |
1163 | else if (!type) { | |
3280af22 NIS |
1164 | SAVEI32(PL_compiling.cop_arybase); |
1165 | PL_compiling.cop_arybase = 0; | |
a0d0e21e LW |
1166 | } |
1167 | else if (type == OP_REFGEN) | |
1168 | goto nomod; | |
1169 | else | |
1170 | croak("That use of $[ is unsupported"); | |
1171 | break; | |
5f05dabc | 1172 | case OP_STUB: |
5196be3e | 1173 | if (o->op_flags & OPf_PARENS) |
5f05dabc | 1174 | break; |
1175 | goto nomod; | |
a0d0e21e LW |
1176 | case OP_ENTERSUB: |
1177 | if ((type == OP_UNDEF || type == OP_REFGEN) && | |
11343788 MB |
1178 | !(o->op_flags & OPf_STACKED)) { |
1179 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
22c35a8c | 1180 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 MB |
1181 | assert(cUNOPo->op_first->op_type == OP_NULL); |
1182 | null(((LISTOP*)cUNOPo->op_first)->op_first);/* disable pushmark */ | |
79072805 LW |
1183 | break; |
1184 | } | |
1185 | /* FALL THROUGH */ | |
1186 | default: | |
a0d0e21e LW |
1187 | nomod: |
1188 | /* grep, foreach, subcalls, refgen */ | |
1189 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) | |
1190 | break; | |
46fc3d4c | 1191 | yyerror(form("Can't modify %s in %s", |
638bc118 | 1192 | (o->op_type == OP_NULL && (o->op_flags & OPf_SPECIAL) |
22c35a8c GS |
1193 | ? "do block" : PL_op_desc[o->op_type]), |
1194 | type ? PL_op_desc[type] : "local")); | |
11343788 | 1195 | return o; |
79072805 | 1196 | |
a0d0e21e LW |
1197 | case OP_PREINC: |
1198 | case OP_PREDEC: | |
1199 | case OP_POW: | |
1200 | case OP_MULTIPLY: | |
1201 | case OP_DIVIDE: | |
1202 | case OP_MODULO: | |
1203 | case OP_REPEAT: | |
1204 | case OP_ADD: | |
1205 | case OP_SUBTRACT: | |
1206 | case OP_CONCAT: | |
1207 | case OP_LEFT_SHIFT: | |
1208 | case OP_RIGHT_SHIFT: | |
1209 | case OP_BIT_AND: | |
1210 | case OP_BIT_XOR: | |
1211 | case OP_BIT_OR: | |
1212 | case OP_I_MULTIPLY: | |
1213 | case OP_I_DIVIDE: | |
1214 | case OP_I_MODULO: | |
1215 | case OP_I_ADD: | |
1216 | case OP_I_SUBTRACT: | |
11343788 | 1217 | if (!(o->op_flags & OPf_STACKED)) |
a0d0e21e | 1218 | goto nomod; |
3280af22 | 1219 | PL_modcount++; |
a0d0e21e LW |
1220 | break; |
1221 | ||
79072805 | 1222 | case OP_COND_EXPR: |
11343788 | 1223 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 | 1224 | mod(kid, type); |
79072805 LW |
1225 | break; |
1226 | ||
1227 | case OP_RV2AV: | |
1228 | case OP_RV2HV: | |
93af7a87 | 1229 | if (!type && cUNOPo->op_first->op_type != OP_GV) |
706a304b | 1230 | croak("Can't localize through a reference"); |
11343788 | 1231 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) { |
3280af22 | 1232 | PL_modcount = 10000; |
11343788 | 1233 | return o; /* Treat \(@foo) like ordinary list. */ |
748a9306 LW |
1234 | } |
1235 | /* FALL THROUGH */ | |
79072805 | 1236 | case OP_RV2GV: |
5dc0d613 | 1237 | if (scalar_mod_type(o, type)) |
3fe9a6f1 | 1238 | goto nomod; |
11343788 | 1239 | ref(cUNOPo->op_first, o->op_type); |
79072805 LW |
1240 | /* FALL THROUGH */ |
1241 | case OP_AASSIGN: | |
1242 | case OP_ASLICE: | |
1243 | case OP_HSLICE: | |
93a17b20 LW |
1244 | case OP_NEXTSTATE: |
1245 | case OP_DBSTATE: | |
a0d0e21e LW |
1246 | case OP_REFGEN: |
1247 | case OP_CHOMP: | |
3280af22 | 1248 | PL_modcount = 10000; |
79072805 | 1249 | break; |
463ee0b2 | 1250 | case OP_RV2SV: |
11343788 | 1251 | if (!type && cUNOPo->op_first->op_type != OP_GV) |
706a304b | 1252 | croak("Can't localize through a reference"); |
aeea060c | 1253 | ref(cUNOPo->op_first, o->op_type); |
463ee0b2 | 1254 | /* FALL THROUGH */ |
79072805 | 1255 | case OP_GV: |
463ee0b2 | 1256 | case OP_AV2ARYLEN: |
3280af22 | 1257 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 1258 | case OP_SASSIGN: |
bf4b1e52 GS |
1259 | case OP_ANDASSIGN: |
1260 | case OP_ORASSIGN: | |
8990e307 | 1261 | case OP_AELEMFAST: |
3280af22 | 1262 | PL_modcount++; |
8990e307 LW |
1263 | break; |
1264 | ||
748a9306 LW |
1265 | case OP_PADAV: |
1266 | case OP_PADHV: | |
3280af22 | 1267 | PL_modcount = 10000; |
5196be3e MB |
1268 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) |
1269 | return o; /* Treat \(@foo) like ordinary list. */ | |
1270 | if (scalar_mod_type(o, type)) | |
3fe9a6f1 | 1271 | goto nomod; |
748a9306 LW |
1272 | /* FALL THROUGH */ |
1273 | case OP_PADSV: | |
3280af22 | 1274 | PL_modcount++; |
748a9306 LW |
1275 | if (!type) |
1276 | croak("Can't localize lexical variable %s", | |
2d8e6c8d | 1277 | SvPV(*av_fetch(PL_comppad_name, o->op_targ, 4), n_a)); |
463ee0b2 LW |
1278 | break; |
1279 | ||
554b3eca | 1280 | #ifdef USE_THREADS |
2faa37cc | 1281 | case OP_THREADSV: |
533c011a | 1282 | PL_modcount++; /* XXX ??? */ |
554b3eca MB |
1283 | break; |
1284 | #endif /* USE_THREADS */ | |
1285 | ||
748a9306 LW |
1286 | case OP_PUSHMARK: |
1287 | break; | |
a0d0e21e | 1288 | |
69969c6f SB |
1289 | case OP_KEYS: |
1290 | if (type != OP_SASSIGN) | |
1291 | goto nomod; | |
5d82c453 GA |
1292 | goto lvalue_func; |
1293 | case OP_SUBSTR: | |
1294 | if (o->op_private == 4) /* don't allow 4 arg substr as lvalue */ | |
1295 | goto nomod; | |
5f05dabc | 1296 | /* FALL THROUGH */ |
a0d0e21e | 1297 | case OP_POS: |
463ee0b2 | 1298 | case OP_VEC: |
5d82c453 | 1299 | lvalue_func: |
11343788 MB |
1300 | pad_free(o->op_targ); |
1301 | o->op_targ = pad_alloc(o->op_type, SVs_PADMY); | |
5dc0d613 | 1302 | assert(SvTYPE(PAD_SV(o->op_targ)) == SVt_NULL); |
11343788 MB |
1303 | if (o->op_flags & OPf_KIDS) |
1304 | mod(cBINOPo->op_first->op_sibling, type); | |
463ee0b2 | 1305 | break; |
a0d0e21e | 1306 | |
463ee0b2 LW |
1307 | case OP_AELEM: |
1308 | case OP_HELEM: | |
11343788 | 1309 | ref(cBINOPo->op_first, o->op_type); |
68dc0745 | 1310 | if (type == OP_ENTERSUB && |
5dc0d613 MB |
1311 | !(o->op_private & (OPpLVAL_INTRO | OPpDEREF))) |
1312 | o->op_private |= OPpLVAL_DEFER; | |
3280af22 | 1313 | PL_modcount++; |
463ee0b2 LW |
1314 | break; |
1315 | ||
1316 | case OP_SCOPE: | |
1317 | case OP_LEAVE: | |
1318 | case OP_ENTER: | |
11343788 MB |
1319 | if (o->op_flags & OPf_KIDS) |
1320 | mod(cLISTOPo->op_last, type); | |
a0d0e21e LW |
1321 | break; |
1322 | ||
1323 | case OP_NULL: | |
638bc118 GS |
1324 | if (o->op_flags & OPf_SPECIAL) /* do BLOCK */ |
1325 | goto nomod; | |
1326 | else if (!(o->op_flags & OPf_KIDS)) | |
463ee0b2 | 1327 | break; |
11343788 MB |
1328 | if (o->op_targ != OP_LIST) { |
1329 | mod(cBINOPo->op_first, type); | |
a0d0e21e LW |
1330 | break; |
1331 | } | |
1332 | /* FALL THROUGH */ | |
463ee0b2 | 1333 | case OP_LIST: |
11343788 | 1334 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1335 | mod(kid, type); |
1336 | break; | |
1337 | } | |
11343788 | 1338 | o->op_flags |= OPf_MOD; |
a0d0e21e LW |
1339 | |
1340 | if (type == OP_AASSIGN || type == OP_SASSIGN) | |
11343788 | 1341 | o->op_flags |= OPf_SPECIAL|OPf_REF; |
a0d0e21e | 1342 | else if (!type) { |
11343788 MB |
1343 | o->op_private |= OPpLVAL_INTRO; |
1344 | o->op_flags &= ~OPf_SPECIAL; | |
3280af22 | 1345 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 1346 | } |
a0d0e21e | 1347 | else if (type != OP_GREPSTART && type != OP_ENTERSUB) |
11343788 MB |
1348 | o->op_flags |= OPf_REF; |
1349 | return o; | |
463ee0b2 LW |
1350 | } |
1351 | ||
3fe9a6f1 | 1352 | static bool |
8ac85365 | 1353 | scalar_mod_type(OP *o, I32 type) |
3fe9a6f1 | 1354 | { |
1355 | switch (type) { | |
1356 | case OP_SASSIGN: | |
5196be3e | 1357 | if (o->op_type == OP_RV2GV) |
3fe9a6f1 | 1358 | return FALSE; |
1359 | /* FALL THROUGH */ | |
1360 | case OP_PREINC: | |
1361 | case OP_PREDEC: | |
1362 | case OP_POSTINC: | |
1363 | case OP_POSTDEC: | |
1364 | case OP_I_PREINC: | |
1365 | case OP_I_PREDEC: | |
1366 | case OP_I_POSTINC: | |
1367 | case OP_I_POSTDEC: | |
1368 | case OP_POW: | |
1369 | case OP_MULTIPLY: | |
1370 | case OP_DIVIDE: | |
1371 | case OP_MODULO: | |
1372 | case OP_REPEAT: | |
1373 | case OP_ADD: | |
1374 | case OP_SUBTRACT: | |
1375 | case OP_I_MULTIPLY: | |
1376 | case OP_I_DIVIDE: | |
1377 | case OP_I_MODULO: | |
1378 | case OP_I_ADD: | |
1379 | case OP_I_SUBTRACT: | |
1380 | case OP_LEFT_SHIFT: | |
1381 | case OP_RIGHT_SHIFT: | |
1382 | case OP_BIT_AND: | |
1383 | case OP_BIT_XOR: | |
1384 | case OP_BIT_OR: | |
1385 | case OP_CONCAT: | |
1386 | case OP_SUBST: | |
1387 | case OP_TRANS: | |
49e9fbe6 GS |
1388 | case OP_READ: |
1389 | case OP_SYSREAD: | |
1390 | case OP_RECV: | |
bf4b1e52 GS |
1391 | case OP_ANDASSIGN: |
1392 | case OP_ORASSIGN: | |
3fe9a6f1 | 1393 | return TRUE; |
1394 | default: | |
1395 | return FALSE; | |
1396 | } | |
1397 | } | |
1398 | ||
35cd451c GS |
1399 | STATIC bool |
1400 | is_handle_constructor(OP *o, I32 argnum) | |
1401 | { | |
1402 | switch (o->op_type) { | |
1403 | case OP_PIPE_OP: | |
1404 | case OP_SOCKPAIR: | |
1405 | if (argnum == 2) | |
1406 | return TRUE; | |
1407 | /* FALL THROUGH */ | |
1408 | case OP_SYSOPEN: | |
1409 | case OP_OPEN: | |
ded8aa31 | 1410 | case OP_SELECT: /* XXX c.f. SelectSaver.pm */ |
35cd451c GS |
1411 | case OP_SOCKET: |
1412 | case OP_OPEN_DIR: | |
1413 | case OP_ACCEPT: | |
1414 | if (argnum == 1) | |
1415 | return TRUE; | |
1416 | /* FALL THROUGH */ | |
1417 | default: | |
1418 | return FALSE; | |
1419 | } | |
1420 | } | |
1421 | ||
463ee0b2 | 1422 | OP * |
8ac85365 | 1423 | refkids(OP *o, I32 type) |
463ee0b2 LW |
1424 | { |
1425 | OP *kid; | |
11343788 MB |
1426 | if (o && o->op_flags & OPf_KIDS) { |
1427 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
463ee0b2 LW |
1428 | ref(kid, type); |
1429 | } | |
11343788 | 1430 | return o; |
463ee0b2 LW |
1431 | } |
1432 | ||
1433 | OP * | |
8ac85365 | 1434 | ref(OP *o, I32 type) |
463ee0b2 LW |
1435 | { |
1436 | OP *kid; | |
463ee0b2 | 1437 | |
3280af22 | 1438 | if (!o || PL_error_count) |
11343788 | 1439 | return o; |
463ee0b2 | 1440 | |
11343788 | 1441 | switch (o->op_type) { |
a0d0e21e | 1442 | case OP_ENTERSUB: |
e55aaa0e | 1443 | if ((type == OP_DEFINED || type == OP_LOCK) && |
11343788 MB |
1444 | !(o->op_flags & OPf_STACKED)) { |
1445 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
22c35a8c | 1446 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 MB |
1447 | assert(cUNOPo->op_first->op_type == OP_NULL); |
1448 | null(((LISTOP*)cUNOPo->op_first)->op_first); /* disable pushmark */ | |
1449 | o->op_flags |= OPf_SPECIAL; | |
8990e307 LW |
1450 | } |
1451 | break; | |
aeea060c | 1452 | |
463ee0b2 | 1453 | case OP_COND_EXPR: |
11343788 | 1454 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1455 | ref(kid, type); |
1456 | break; | |
8990e307 | 1457 | case OP_RV2SV: |
35cd451c GS |
1458 | if (type == OP_DEFINED) |
1459 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
11343788 | 1460 | ref(cUNOPo->op_first, o->op_type); |
4633a7c4 LW |
1461 | /* FALL THROUGH */ |
1462 | case OP_PADSV: | |
5f05dabc | 1463 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1464 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1465 | : type == OP_RV2HV ? OPpDEREF_HV | |
1466 | : OPpDEREF_SV); | |
11343788 | 1467 | o->op_flags |= OPf_MOD; |
a0d0e21e | 1468 | } |
8990e307 LW |
1469 | break; |
1470 | ||
2faa37cc | 1471 | case OP_THREADSV: |
a863c7d1 MB |
1472 | o->op_flags |= OPf_MOD; /* XXX ??? */ |
1473 | break; | |
1474 | ||
463ee0b2 LW |
1475 | case OP_RV2AV: |
1476 | case OP_RV2HV: | |
aeea060c | 1477 | o->op_flags |= OPf_REF; |
8990e307 | 1478 | /* FALL THROUGH */ |
463ee0b2 | 1479 | case OP_RV2GV: |
35cd451c GS |
1480 | if (type == OP_DEFINED) |
1481 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
11343788 | 1482 | ref(cUNOPo->op_first, o->op_type); |
463ee0b2 | 1483 | break; |
8990e307 | 1484 | |
463ee0b2 LW |
1485 | case OP_PADAV: |
1486 | case OP_PADHV: | |
aeea060c | 1487 | o->op_flags |= OPf_REF; |
79072805 | 1488 | break; |
aeea060c | 1489 | |
8990e307 | 1490 | case OP_SCALAR: |
79072805 | 1491 | case OP_NULL: |
11343788 | 1492 | if (!(o->op_flags & OPf_KIDS)) |
463ee0b2 | 1493 | break; |
11343788 | 1494 | ref(cBINOPo->op_first, type); |
79072805 LW |
1495 | break; |
1496 | case OP_AELEM: | |
1497 | case OP_HELEM: | |
11343788 | 1498 | ref(cBINOPo->op_first, o->op_type); |
5f05dabc | 1499 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1500 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1501 | : type == OP_RV2HV ? OPpDEREF_HV | |
1502 | : OPpDEREF_SV); | |
11343788 | 1503 | o->op_flags |= OPf_MOD; |
8990e307 | 1504 | } |
79072805 LW |
1505 | break; |
1506 | ||
463ee0b2 | 1507 | case OP_SCOPE: |
79072805 LW |
1508 | case OP_LEAVE: |
1509 | case OP_ENTER: | |
8990e307 | 1510 | case OP_LIST: |
11343788 | 1511 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1512 | break; |
11343788 | 1513 | ref(cLISTOPo->op_last, type); |
79072805 | 1514 | break; |
a0d0e21e LW |
1515 | default: |
1516 | break; | |
79072805 | 1517 | } |
11343788 | 1518 | return scalar(o); |
8990e307 | 1519 | |
79072805 LW |
1520 | } |
1521 | ||
1522 | OP * | |
8ac85365 | 1523 | my(OP *o) |
93a17b20 LW |
1524 | { |
1525 | OP *kid; | |
93a17b20 LW |
1526 | I32 type; |
1527 | ||
3280af22 | 1528 | if (!o || PL_error_count) |
11343788 | 1529 | return o; |
93a17b20 | 1530 | |
11343788 | 1531 | type = o->op_type; |
93a17b20 | 1532 | if (type == OP_LIST) { |
11343788 | 1533 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
93a17b20 | 1534 | my(kid); |
dab48698 | 1535 | } else if (type == OP_UNDEF) { |
7766148a | 1536 | return o; |
dab48698 | 1537 | } else if (type != OP_PADSV && |
93a17b20 LW |
1538 | type != OP_PADAV && |
1539 | type != OP_PADHV && | |
1540 | type != OP_PUSHMARK) | |
1541 | { | |
22c35a8c | 1542 | yyerror(form("Can't declare %s in my", PL_op_desc[o->op_type])); |
11343788 | 1543 | return o; |
93a17b20 | 1544 | } |
11343788 MB |
1545 | o->op_flags |= OPf_MOD; |
1546 | o->op_private |= OPpLVAL_INTRO; | |
1547 | return o; | |
93a17b20 LW |
1548 | } |
1549 | ||
1550 | OP * | |
8ac85365 | 1551 | sawparens(OP *o) |
79072805 LW |
1552 | { |
1553 | if (o) | |
1554 | o->op_flags |= OPf_PARENS; | |
1555 | return o; | |
1556 | } | |
1557 | ||
1558 | OP * | |
8ac85365 | 1559 | bind_match(I32 type, OP *left, OP *right) |
79072805 | 1560 | { |
d008e5eb | 1561 | dTHR; |
11343788 | 1562 | OP *o; |
79072805 | 1563 | |
599cee73 PM |
1564 | if (ckWARN(WARN_UNSAFE) && |
1565 | (left->op_type == OP_RV2AV || | |
1566 | left->op_type == OP_RV2HV || | |
1567 | left->op_type == OP_PADAV || | |
1568 | left->op_type == OP_PADHV)) { | |
22c35a8c | 1569 | char *desc = PL_op_desc[(right->op_type == OP_SUBST || |
599cee73 PM |
1570 | right->op_type == OP_TRANS) |
1571 | ? right->op_type : OP_MATCH]; | |
1572 | char *sample = ((left->op_type == OP_RV2AV || | |
1573 | left->op_type == OP_PADAV) | |
1574 | ? "@array" : "%hash"); | |
1575 | warner(WARN_UNSAFE, | |
1576 | "Applying %s to %s will act on scalar(%s)", | |
1577 | desc, sample, sample); | |
2ae324a7 | 1578 | } |
1579 | ||
79072805 LW |
1580 | if (right->op_type == OP_MATCH || |
1581 | right->op_type == OP_SUBST || | |
1582 | right->op_type == OP_TRANS) { | |
1583 | right->op_flags |= OPf_STACKED; | |
1584 | if (right->op_type != OP_MATCH) | |
463ee0b2 | 1585 | left = mod(left, right->op_type); |
79072805 | 1586 | if (right->op_type == OP_TRANS) |
11343788 | 1587 | o = newBINOP(OP_NULL, OPf_STACKED, scalar(left), right); |
79072805 | 1588 | else |
11343788 | 1589 | o = prepend_elem(right->op_type, scalar(left), right); |
79072805 | 1590 | if (type == OP_NOT) |
11343788 MB |
1591 | return newUNOP(OP_NOT, 0, scalar(o)); |
1592 | return o; | |
79072805 LW |
1593 | } |
1594 | else | |
1595 | return bind_match(type, left, | |
1596 | pmruntime(newPMOP(OP_MATCH, 0), right, Nullop)); | |
1597 | } | |
1598 | ||
1599 | OP * | |
8ac85365 | 1600 | invert(OP *o) |
79072805 | 1601 | { |
11343788 MB |
1602 | if (!o) |
1603 | return o; | |
79072805 | 1604 | /* XXX need to optimize away NOT NOT here? Or do we let optimizer do it? */ |
11343788 | 1605 | return newUNOP(OP_NOT, OPf_SPECIAL, scalar(o)); |
79072805 LW |
1606 | } |
1607 | ||
1608 | OP * | |
8ac85365 | 1609 | scope(OP *o) |
79072805 LW |
1610 | { |
1611 | if (o) { | |
3280af22 | 1612 | if (o->op_flags & OPf_PARENS || PERLDB_NOOPT || PL_tainting) { |
463ee0b2 LW |
1613 | o = prepend_elem(OP_LINESEQ, newOP(OP_ENTER, 0), o); |
1614 | o->op_type = OP_LEAVE; | |
22c35a8c | 1615 | o->op_ppaddr = PL_ppaddr[OP_LEAVE]; |
463ee0b2 LW |
1616 | } |
1617 | else { | |
1618 | if (o->op_type == OP_LINESEQ) { | |
1619 | OP *kid; | |
1620 | o->op_type = OP_SCOPE; | |
22c35a8c | 1621 | o->op_ppaddr = PL_ppaddr[OP_SCOPE]; |
463ee0b2 | 1622 | kid = ((LISTOP*)o)->op_first; |
748a9306 LW |
1623 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE){ |
1624 | SvREFCNT_dec(((COP*)kid)->cop_filegv); | |
8990e307 | 1625 | null(kid); |
748a9306 | 1626 | } |
463ee0b2 LW |
1627 | } |
1628 | else | |
748a9306 | 1629 | o = newLISTOP(OP_SCOPE, 0, o, Nullop); |
463ee0b2 | 1630 | } |
79072805 LW |
1631 | } |
1632 | return o; | |
1633 | } | |
1634 | ||
b3ac6de7 IZ |
1635 | void |
1636 | save_hints(void) | |
1637 | { | |
3280af22 NIS |
1638 | SAVEI32(PL_hints); |
1639 | SAVESPTR(GvHV(PL_hintgv)); | |
1640 | GvHV(PL_hintgv) = newHVhv(GvHV(PL_hintgv)); | |
1641 | SAVEFREESV(GvHV(PL_hintgv)); | |
b3ac6de7 IZ |
1642 | } |
1643 | ||
a0d0e21e | 1644 | int |
8ac85365 | 1645 | block_start(int full) |
79072805 | 1646 | { |
11343788 | 1647 | dTHR; |
3280af22 | 1648 | int retval = PL_savestack_ix; |
b3ac6de7 | 1649 | |
3280af22 | 1650 | SAVEI32(PL_comppad_name_floor); |
55497cff | 1651 | if (full) { |
3280af22 NIS |
1652 | if ((PL_comppad_name_fill = AvFILLp(PL_comppad_name)) > 0) |
1653 | PL_comppad_name_floor = PL_comppad_name_fill; | |
55497cff | 1654 | else |
3280af22 NIS |
1655 | PL_comppad_name_floor = 0; |
1656 | } | |
1657 | SAVEI32(PL_min_intro_pending); | |
1658 | SAVEI32(PL_max_intro_pending); | |
1659 | PL_min_intro_pending = 0; | |
1660 | SAVEI32(PL_comppad_name_fill); | |
1661 | SAVEI32(PL_padix_floor); | |
1662 | PL_padix_floor = PL_padix; | |
1663 | PL_pad_reset_pending = FALSE; | |
b3ac6de7 | 1664 | SAVEHINTS(); |
3280af22 | 1665 | PL_hints &= ~HINT_BLOCK_SCOPE; |
e24b16f9 | 1666 | SAVEPPTR(PL_compiling.cop_warnings); |
599cee73 PM |
1667 | if (PL_compiling.cop_warnings != WARN_ALL && |
1668 | PL_compiling.cop_warnings != WARN_NONE) { | |
1669 | PL_compiling.cop_warnings = newSVsv(PL_compiling.cop_warnings) ; | |
1670 | SAVEFREESV(PL_compiling.cop_warnings) ; | |
1671 | } | |
1672 | ||
1673 | ||
a0d0e21e LW |
1674 | return retval; |
1675 | } | |
1676 | ||
1677 | OP* | |
8ac85365 | 1678 | block_end(I32 floor, OP *seq) |
a0d0e21e | 1679 | { |
11343788 | 1680 | dTHR; |
3280af22 | 1681 | int needblockscope = PL_hints & HINT_BLOCK_SCOPE; |
a0d0e21e | 1682 | OP* retval = scalarseq(seq); |
a0d0e21e | 1683 | LEAVE_SCOPE(floor); |
3280af22 | 1684 | PL_pad_reset_pending = FALSE; |
e24b16f9 | 1685 | PL_compiling.op_private = PL_hints; |
a0d0e21e | 1686 | if (needblockscope) |
3280af22 NIS |
1687 | PL_hints |= HINT_BLOCK_SCOPE; /* propagate out */ |
1688 | pad_leavemy(PL_comppad_name_fill); | |
1689 | PL_cop_seqmax++; | |
a0d0e21e LW |
1690 | return retval; |
1691 | } | |
1692 | ||
76e3520e | 1693 | STATIC OP * |
54b9620d MB |
1694 | newDEFSVOP(void) |
1695 | { | |
1696 | #ifdef USE_THREADS | |
1697 | OP *o = newOP(OP_THREADSV, 0); | |
1698 | o->op_targ = find_threadsv("_"); | |
1699 | return o; | |
1700 | #else | |
3280af22 | 1701 | return newSVREF(newGVOP(OP_GV, 0, PL_defgv)); |
54b9620d MB |
1702 | #endif /* USE_THREADS */ |
1703 | } | |
1704 | ||
a0d0e21e | 1705 | void |
8ac85365 | 1706 | newPROG(OP *o) |
a0d0e21e | 1707 | { |
11343788 | 1708 | dTHR; |
3280af22 NIS |
1709 | if (PL_in_eval) { |
1710 | PL_eval_root = newUNOP(OP_LEAVEEVAL, ((PL_in_eval & 4) ? OPf_SPECIAL : 0), o); | |
1711 | PL_eval_start = linklist(PL_eval_root); | |
1712 | PL_eval_root->op_next = 0; | |
1713 | peep(PL_eval_start); | |
a0d0e21e LW |
1714 | } |
1715 | else { | |
5dc0d613 | 1716 | if (!o) |
a0d0e21e | 1717 | return; |
3280af22 NIS |
1718 | PL_main_root = scope(sawparens(scalarvoid(o))); |
1719 | PL_curcop = &PL_compiling; | |
1720 | PL_main_start = LINKLIST(PL_main_root); | |
1721 | PL_main_root->op_next = 0; | |
1722 | peep(PL_main_start); | |
1723 | PL_compcv = 0; | |
3841441e | 1724 | |
4fdae800 | 1725 | /* Register with debugger */ |
84902520 | 1726 | if (PERLDB_INTER) { |
3841441e | 1727 | CV *cv = perl_get_cv("DB::postponed", FALSE); |
3841441e CS |
1728 | if (cv) { |
1729 | dSP; | |
924508f0 | 1730 | PUSHMARK(SP); |
3280af22 | 1731 | XPUSHs((SV*)PL_compiling.cop_filegv); |
3841441e CS |
1732 | PUTBACK; |
1733 | perl_call_sv((SV*)cv, G_DISCARD); | |
1734 | } | |
1735 | } | |
79072805 | 1736 | } |
79072805 LW |
1737 | } |
1738 | ||
1739 | OP * | |
8ac85365 | 1740 | localize(OP *o, I32 lex) |
79072805 LW |
1741 | { |
1742 | if (o->op_flags & OPf_PARENS) | |
1743 | list(o); | |
8990e307 | 1744 | else { |
d008e5eb | 1745 | dTHR; |
599cee73 | 1746 | if (ckWARN(WARN_PARENTHESIS) && PL_bufptr > PL_oldbufptr && PL_bufptr[-1] == ',') { |
8990e307 | 1747 | char *s; |
834a4ddd | 1748 | for (s = PL_bufptr; *s && (isALNUM(*s) || (*s & 0x80) || strchr("@$%, ",*s)); s++) ; |
a0d0e21e | 1749 | if (*s == ';' || *s == '=') |
752ebe84 | 1750 | warner(WARN_PARENTHESIS, "Parentheses missing around \"%s\" list", |
599cee73 | 1751 | lex ? "my" : "local"); |
8990e307 LW |
1752 | } |
1753 | } | |
3280af22 NIS |
1754 | PL_in_my = FALSE; |
1755 | PL_in_my_stash = Nullhv; | |
93a17b20 LW |
1756 | if (lex) |
1757 | return my(o); | |
1758 | else | |
463ee0b2 | 1759 | return mod(o, OP_NULL); /* a bit kludgey */ |
79072805 LW |
1760 | } |
1761 | ||
1762 | OP * | |
8ac85365 | 1763 | jmaybe(OP *o) |
79072805 LW |
1764 | { |
1765 | if (o->op_type == OP_LIST) { | |
554b3eca MB |
1766 | OP *o2; |
1767 | #ifdef USE_THREADS | |
2faa37cc | 1768 | o2 = newOP(OP_THREADSV, 0); |
54b9620d | 1769 | o2->op_targ = find_threadsv(";"); |
554b3eca MB |
1770 | #else |
1771 | o2 = newSVREF(newGVOP(OP_GV, 0, gv_fetchpv(";", TRUE, SVt_PV))), | |
1772 | #endif /* USE_THREADS */ | |
1773 | o = convert(OP_JOIN, 0, prepend_elem(OP_LIST, o2, o)); | |
79072805 LW |
1774 | } |
1775 | return o; | |
1776 | } | |
1777 | ||
1778 | OP * | |
8ac85365 | 1779 | fold_constants(register OP *o) |
79072805 | 1780 | { |
11343788 | 1781 | dTHR; |
79072805 LW |
1782 | register OP *curop; |
1783 | I32 type = o->op_type; | |
748a9306 | 1784 | SV *sv; |
79072805 | 1785 | |
22c35a8c | 1786 | if (PL_opargs[type] & OA_RETSCALAR) |
79072805 | 1787 | scalar(o); |
22c35a8c | 1788 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 1789 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 | 1790 | |
22c35a8c GS |
1791 | if ((PL_opargs[type] & OA_OTHERINT) && (PL_hints & HINT_INTEGER)) |
1792 | o->op_ppaddr = PL_ppaddr[type = ++(o->op_type)]; | |
85e6fe83 | 1793 | |
22c35a8c | 1794 | if (!(PL_opargs[type] & OA_FOLDCONST)) |
79072805 LW |
1795 | goto nope; |
1796 | ||
de939608 CS |
1797 | switch (type) { |
1798 | case OP_SPRINTF: | |
1799 | case OP_UCFIRST: | |
1800 | case OP_LCFIRST: | |
1801 | case OP_UC: | |
1802 | case OP_LC: | |
69dcf70c MB |
1803 | case OP_SLT: |
1804 | case OP_SGT: | |
1805 | case OP_SLE: | |
1806 | case OP_SGE: | |
1807 | case OP_SCMP: | |
1808 | ||
de939608 CS |
1809 | if (o->op_private & OPpLOCALE) |
1810 | goto nope; | |
1811 | } | |
1812 | ||
3280af22 | 1813 | if (PL_error_count) |
a0d0e21e LW |
1814 | goto nope; /* Don't try to run w/ errors */ |
1815 | ||
79072805 | 1816 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
93a17b20 LW |
1817 | if (curop->op_type != OP_CONST && |
1818 | curop->op_type != OP_LIST && | |
1819 | curop->op_type != OP_SCALAR && | |
a0d0e21e | 1820 | curop->op_type != OP_NULL && |
93a17b20 | 1821 | curop->op_type != OP_PUSHMARK) { |
79072805 LW |
1822 | goto nope; |
1823 | } | |
1824 | } | |
1825 | ||
1826 | curop = LINKLIST(o); | |
1827 | o->op_next = 0; | |
533c011a | 1828 | PL_op = curop; |
76e3520e | 1829 | CALLRUNOPS(); |
3280af22 | 1830 | sv = *(PL_stack_sp--); |
748a9306 | 1831 | if (o->op_targ && sv == PAD_SV(o->op_targ)) /* grab pad temp? */ |
79072805 | 1832 | pad_swipe(o->op_targ); |
748a9306 LW |
1833 | else if (SvTEMP(sv)) { /* grab mortal temp? */ |
1834 | (void)SvREFCNT_inc(sv); | |
1835 | SvTEMP_off(sv); | |
85e6fe83 | 1836 | } |
79072805 LW |
1837 | op_free(o); |
1838 | if (type == OP_RV2GV) | |
b1cb66bf | 1839 | return newGVOP(OP_GV, 0, (GV*)sv); |
748a9306 | 1840 | else { |
ee580363 GS |
1841 | /* try to smush double to int, but don't smush -2.0 to -2 */ |
1842 | if ((SvFLAGS(sv) & (SVf_IOK|SVf_NOK|SVf_POK)) == SVf_NOK && | |
1843 | type != OP_NEGATE) | |
1844 | { | |
748a9306 | 1845 | IV iv = SvIV(sv); |
ee580363 | 1846 | if ((double)iv == SvNV(sv)) { |
748a9306 LW |
1847 | SvREFCNT_dec(sv); |
1848 | sv = newSViv(iv); | |
1849 | } | |
b1cb66bf | 1850 | else |
1851 | SvIOK_off(sv); /* undo SvIV() damage */ | |
748a9306 LW |
1852 | } |
1853 | return newSVOP(OP_CONST, 0, sv); | |
1854 | } | |
aeea060c | 1855 | |
79072805 | 1856 | nope: |
22c35a8c | 1857 | if (!(PL_opargs[type] & OA_OTHERINT)) |
79072805 | 1858 | return o; |
79072805 | 1859 | |
3280af22 | 1860 | if (!(PL_hints & HINT_INTEGER)) { |
a0d0e21e | 1861 | if (type == OP_DIVIDE || !(o->op_flags & OPf_KIDS)) |
85e6fe83 LW |
1862 | return o; |
1863 | ||
1864 | for (curop = ((UNOP*)o)->op_first; curop; curop = curop->op_sibling) { | |
1865 | if (curop->op_type == OP_CONST) { | |
b1cb66bf | 1866 | if (SvIOK(((SVOP*)curop)->op_sv)) |
85e6fe83 LW |
1867 | continue; |
1868 | return o; | |
1869 | } | |
22c35a8c | 1870 | if (PL_opargs[curop->op_type] & OA_RETINTEGER) |
79072805 LW |
1871 | continue; |
1872 | return o; | |
1873 | } | |
22c35a8c | 1874 | o->op_ppaddr = PL_ppaddr[++(o->op_type)]; |
79072805 LW |
1875 | } |
1876 | ||
79072805 LW |
1877 | return o; |
1878 | } | |
1879 | ||
1880 | OP * | |
8ac85365 | 1881 | gen_constant_list(register OP *o) |
79072805 | 1882 | { |
11343788 | 1883 | dTHR; |
79072805 | 1884 | register OP *curop; |
3280af22 | 1885 | I32 oldtmps_floor = PL_tmps_floor; |
79072805 | 1886 | |
a0d0e21e | 1887 | list(o); |
3280af22 | 1888 | if (PL_error_count) |
a0d0e21e LW |
1889 | return o; /* Don't attempt to run with errors */ |
1890 | ||
533c011a | 1891 | PL_op = curop = LINKLIST(o); |
a0d0e21e | 1892 | o->op_next = 0; |
11343788 | 1893 | pp_pushmark(ARGS); |
76e3520e | 1894 | CALLRUNOPS(); |
533c011a | 1895 | PL_op = curop; |
11343788 | 1896 | pp_anonlist(ARGS); |
3280af22 | 1897 | PL_tmps_floor = oldtmps_floor; |
79072805 LW |
1898 | |
1899 | o->op_type = OP_RV2AV; | |
22c35a8c | 1900 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
79072805 | 1901 | curop = ((UNOP*)o)->op_first; |
3280af22 | 1902 | ((UNOP*)o)->op_first = newSVOP(OP_CONST, 0, SvREFCNT_inc(*PL_stack_sp--)); |
79072805 | 1903 | op_free(curop); |
79072805 LW |
1904 | linklist(o); |
1905 | return list(o); | |
1906 | } | |
1907 | ||
1908 | OP * | |
8ac85365 | 1909 | convert(I32 type, I32 flags, OP *o) |
79072805 LW |
1910 | { |
1911 | OP *kid; | |
a0d0e21e | 1912 | OP *last = 0; |
79072805 | 1913 | |
11343788 MB |
1914 | if (!o || o->op_type != OP_LIST) |
1915 | o = newLISTOP(OP_LIST, 0, o, Nullop); | |
748a9306 | 1916 | else |
5dc0d613 | 1917 | o->op_flags &= ~OPf_WANT; |
79072805 | 1918 | |
22c35a8c | 1919 | if (!(PL_opargs[type] & OA_MARK)) |
11343788 | 1920 | null(cLISTOPo->op_first); |
8990e307 | 1921 | |
11343788 | 1922 | o->op_type = type; |
22c35a8c | 1923 | o->op_ppaddr = PL_ppaddr[type]; |
11343788 | 1924 | o->op_flags |= flags; |
79072805 | 1925 | |
11343788 MB |
1926 | o = CHECKOP(type, o); |
1927 | if (o->op_type != type) | |
1928 | return o; | |
79072805 | 1929 | |
11343788 | 1930 | if (cLISTOPo->op_children < 7) { |
79072805 | 1931 | /* XXX do we really need to do this if we're done appending?? */ |
11343788 | 1932 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 | 1933 | last = kid; |
11343788 | 1934 | cLISTOPo->op_last = last; /* in case check substituted last arg */ |
79072805 LW |
1935 | } |
1936 | ||
11343788 | 1937 | return fold_constants(o); |
79072805 LW |
1938 | } |
1939 | ||
1940 | /* List constructors */ | |
1941 | ||
1942 | OP * | |
8ac85365 | 1943 | append_elem(I32 type, OP *first, OP *last) |
79072805 LW |
1944 | { |
1945 | if (!first) | |
1946 | return last; | |
8990e307 LW |
1947 | |
1948 | if (!last) | |
79072805 | 1949 | return first; |
8990e307 | 1950 | |
a0d0e21e LW |
1951 | if (first->op_type != type || type==OP_LIST && first->op_flags & OPf_PARENS) |
1952 | return newLISTOP(type, 0, first, last); | |
79072805 | 1953 | |
a0d0e21e LW |
1954 | if (first->op_flags & OPf_KIDS) |
1955 | ((LISTOP*)first)->op_last->op_sibling = last; | |
1956 | else { | |
1957 | first->op_flags |= OPf_KIDS; | |
1958 | ((LISTOP*)first)->op_first = last; | |
1959 | } | |
1960 | ((LISTOP*)first)->op_last = last; | |
1961 | ((LISTOP*)first)->op_children++; | |
1962 | return first; | |
79072805 LW |
1963 | } |
1964 | ||
1965 | OP * | |
8ac85365 | 1966 | append_list(I32 type, LISTOP *first, LISTOP *last) |
79072805 LW |
1967 | { |
1968 | if (!first) | |
1969 | return (OP*)last; | |
8990e307 LW |
1970 | |
1971 | if (!last) | |
79072805 | 1972 | return (OP*)first; |
8990e307 LW |
1973 | |
1974 | if (first->op_type != type) | |
79072805 | 1975 | return prepend_elem(type, (OP*)first, (OP*)last); |
8990e307 LW |
1976 | |
1977 | if (last->op_type != type) | |
79072805 LW |
1978 | return append_elem(type, (OP*)first, (OP*)last); |
1979 | ||
1980 | first->op_last->op_sibling = last->op_first; | |
1981 | first->op_last = last->op_last; | |
1982 | first->op_children += last->op_children; | |
1983 | if (first->op_children) | |
acb74605 | 1984 | first->op_flags |= OPf_KIDS; |
79072805 LW |
1985 | |
1986 | Safefree(last); | |
1987 | return (OP*)first; | |
1988 | } | |
1989 | ||
1990 | OP * | |
8ac85365 | 1991 | prepend_elem(I32 type, OP *first, OP *last) |
79072805 LW |
1992 | { |
1993 | if (!first) | |
1994 | return last; | |
8990e307 LW |
1995 | |
1996 | if (!last) | |
79072805 | 1997 | return first; |
8990e307 LW |
1998 | |
1999 | if (last->op_type == type) { | |
2000 | if (type == OP_LIST) { /* already a PUSHMARK there */ | |
2001 | first->op_sibling = ((LISTOP*)last)->op_first->op_sibling; | |
2002 | ((LISTOP*)last)->op_first->op_sibling = first; | |
2003 | } | |
2004 | else { | |
2005 | if (!(last->op_flags & OPf_KIDS)) { | |
2006 | ((LISTOP*)last)->op_last = first; | |
2007 | last->op_flags |= OPf_KIDS; | |
2008 | } | |
2009 | first->op_sibling = ((LISTOP*)last)->op_first; | |
2010 | ((LISTOP*)last)->op_first = first; | |
79072805 | 2011 | } |
79072805 LW |
2012 | ((LISTOP*)last)->op_children++; |
2013 | return last; | |
2014 | } | |
2015 | ||
2016 | return newLISTOP(type, 0, first, last); | |
2017 | } | |
2018 | ||
2019 | /* Constructors */ | |
2020 | ||
2021 | OP * | |
8ac85365 | 2022 | newNULLLIST(void) |
79072805 | 2023 | { |
8990e307 LW |
2024 | return newOP(OP_STUB, 0); |
2025 | } | |
2026 | ||
2027 | OP * | |
8ac85365 | 2028 | force_list(OP *o) |
8990e307 | 2029 | { |
11343788 MB |
2030 | if (!o || o->op_type != OP_LIST) |
2031 | o = newLISTOP(OP_LIST, 0, o, Nullop); | |
2032 | null(o); | |
2033 | return o; | |
79072805 LW |
2034 | } |
2035 | ||
2036 | OP * | |
8ac85365 | 2037 | newLISTOP(I32 type, I32 flags, OP *first, OP *last) |
79072805 LW |
2038 | { |
2039 | LISTOP *listop; | |
2040 | ||
2041 | Newz(1101, listop, 1, LISTOP); | |
2042 | ||
2043 | listop->op_type = type; | |
22c35a8c | 2044 | listop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2045 | listop->op_children = (first != 0) + (last != 0); |
2046 | listop->op_flags = flags; | |
79072805 LW |
2047 | |
2048 | if (!last && first) | |
2049 | last = first; | |
2050 | else if (!first && last) | |
2051 | first = last; | |
8990e307 LW |
2052 | else if (first) |
2053 | first->op_sibling = last; | |
79072805 LW |
2054 | listop->op_first = first; |
2055 | listop->op_last = last; | |
8990e307 LW |
2056 | if (type == OP_LIST) { |
2057 | OP* pushop; | |
2058 | pushop = newOP(OP_PUSHMARK, 0); | |
2059 | pushop->op_sibling = first; | |
2060 | listop->op_first = pushop; | |
2061 | listop->op_flags |= OPf_KIDS; | |
2062 | if (!last) | |
2063 | listop->op_last = pushop; | |
2064 | } | |
2065 | else if (listop->op_children) | |
2066 | listop->op_flags |= OPf_KIDS; | |
79072805 LW |
2067 | |
2068 | return (OP*)listop; | |
2069 | } | |
2070 | ||
2071 | OP * | |
8ac85365 | 2072 | newOP(I32 type, I32 flags) |
79072805 | 2073 | { |
11343788 MB |
2074 | OP *o; |
2075 | Newz(1101, o, 1, OP); | |
2076 | o->op_type = type; | |
22c35a8c | 2077 | o->op_ppaddr = PL_ppaddr[type]; |
11343788 | 2078 | o->op_flags = flags; |
79072805 | 2079 | |
11343788 MB |
2080 | o->op_next = o; |
2081 | o->op_private = 0 + (flags >> 8); | |
22c35a8c | 2082 | if (PL_opargs[type] & OA_RETSCALAR) |
11343788 | 2083 | scalar(o); |
22c35a8c | 2084 | if (PL_opargs[type] & OA_TARGET) |
11343788 MB |
2085 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
2086 | return CHECKOP(type, o); | |
79072805 LW |
2087 | } |
2088 | ||
2089 | OP * | |
8ac85365 | 2090 | newUNOP(I32 type, I32 flags, OP *first) |
79072805 LW |
2091 | { |
2092 | UNOP *unop; | |
2093 | ||
93a17b20 | 2094 | if (!first) |
aeea060c | 2095 | first = newOP(OP_STUB, 0); |
22c35a8c | 2096 | if (PL_opargs[type] & OA_MARK) |
8990e307 | 2097 | first = force_list(first); |
93a17b20 | 2098 | |
79072805 LW |
2099 | Newz(1101, unop, 1, UNOP); |
2100 | unop->op_type = type; | |
22c35a8c | 2101 | unop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2102 | unop->op_first = first; |
2103 | unop->op_flags = flags | OPf_KIDS; | |
c07a80fd | 2104 | unop->op_private = 1 | (flags >> 8); |
e50aee73 | 2105 | unop = (UNOP*) CHECKOP(type, unop); |
79072805 LW |
2106 | if (unop->op_next) |
2107 | return (OP*)unop; | |
2108 | ||
a0d0e21e | 2109 | return fold_constants((OP *) unop); |
79072805 LW |
2110 | } |
2111 | ||
2112 | OP * | |
8ac85365 | 2113 | newBINOP(I32 type, I32 flags, OP *first, OP *last) |
79072805 LW |
2114 | { |
2115 | BINOP *binop; | |
2116 | Newz(1101, binop, 1, BINOP); | |
2117 | ||
2118 | if (!first) | |
2119 | first = newOP(OP_NULL, 0); | |
2120 | ||
2121 | binop->op_type = type; | |
22c35a8c | 2122 | binop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2123 | binop->op_first = first; |
2124 | binop->op_flags = flags | OPf_KIDS; | |
2125 | if (!last) { | |
2126 | last = first; | |
c07a80fd | 2127 | binop->op_private = 1 | (flags >> 8); |
79072805 LW |
2128 | } |
2129 | else { | |
c07a80fd | 2130 | binop->op_private = 2 | (flags >> 8); |
79072805 LW |
2131 | first->op_sibling = last; |
2132 | } | |
2133 | ||
e50aee73 | 2134 | binop = (BINOP*)CHECKOP(type, binop); |
79072805 LW |
2135 | if (binop->op_next) |
2136 | return (OP*)binop; | |
2137 | ||
7284ab6f | 2138 | binop->op_last = binop->op_first->op_sibling; |
79072805 | 2139 | |
a0d0e21e | 2140 | return fold_constants((OP *)binop); |
79072805 LW |
2141 | } |
2142 | ||
a0ed51b3 LW |
2143 | static int |
2144 | utf8compare(const void *a, const void *b) | |
2145 | { | |
2146 | int i; | |
2147 | for (i = 0; i < 10; i++) { | |
2148 | if ((*(U8**)a)[i] < (*(U8**)b)[i]) | |
2149 | return -1; | |
2150 | if ((*(U8**)a)[i] > (*(U8**)b)[i]) | |
2151 | return 1; | |
2152 | } | |
2153 | return 0; | |
2154 | } | |
2155 | ||
79072805 | 2156 | OP * |
8ac85365 | 2157 | pmtrans(OP *o, OP *expr, OP *repl) |
79072805 | 2158 | { |
79072805 LW |
2159 | SV *tstr = ((SVOP*)expr)->op_sv; |
2160 | SV *rstr = ((SVOP*)repl)->op_sv; | |
463ee0b2 LW |
2161 | STRLEN tlen; |
2162 | STRLEN rlen; | |
ec49126f | 2163 | register U8 *t = (U8*)SvPV(tstr, tlen); |
2164 | register U8 *r = (U8*)SvPV(rstr, rlen); | |
79072805 LW |
2165 | register I32 i; |
2166 | register I32 j; | |
a0ed51b3 | 2167 | I32 del; |
79072805 | 2168 | I32 complement; |
5d06d08e | 2169 | I32 squash; |
79072805 LW |
2170 | register short *tbl; |
2171 | ||
11343788 | 2172 | complement = o->op_private & OPpTRANS_COMPLEMENT; |
a0ed51b3 | 2173 | del = o->op_private & OPpTRANS_DELETE; |
5d06d08e | 2174 | squash = o->op_private & OPpTRANS_SQUASH; |
79072805 | 2175 | |
a0ed51b3 LW |
2176 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { |
2177 | SV* listsv = newSVpv("# comment\n",0); | |
2178 | SV* transv = 0; | |
2179 | U8* tend = t + tlen; | |
2180 | U8* rend = r + rlen; | |
2181 | I32 ulen; | |
2182 | U32 tfirst = 1; | |
2183 | U32 tlast = 0; | |
2184 | I32 tdiff; | |
2185 | U32 rfirst = 1; | |
2186 | U32 rlast = 0; | |
2187 | I32 rdiff; | |
2188 | I32 diff; | |
2189 | I32 none = 0; | |
2190 | U32 max = 0; | |
2191 | I32 bits; | |
2192 | I32 grows = 0; | |
2193 | I32 havefinal = 0; | |
2194 | U32 final; | |
2195 | HV *hv; | |
2196 | I32 from_utf = o->op_private & OPpTRANS_FROM_UTF; | |
2197 | I32 to_utf = o->op_private & OPpTRANS_TO_UTF; | |
2198 | ||
2199 | if (complement) { | |
2200 | U8 tmpbuf[10]; | |
2201 | U8** cp; | |
2202 | UV nextmin = 0; | |
2203 | New(1109, cp, tlen, U8*); | |
2204 | i = 0; | |
2205 | transv = newSVpv("",0); | |
2206 | while (t < tend) { | |
2207 | cp[i++] = t; | |
2208 | t += UTF8SKIP(t); | |
2209 | if (*t == 0xff) { | |
2210 | t++; | |
2211 | t += UTF8SKIP(t); | |
2212 | } | |
2213 | } | |
2214 | qsort(cp, i, sizeof(U8*), utf8compare); | |
2215 | for (j = 0; j < i; j++) { | |
2216 | U8 *s = cp[j]; | |
2217 | UV val = utf8_to_uv(s, &ulen); | |
2218 | s += ulen; | |
2219 | diff = val - nextmin; | |
2220 | if (diff > 0) { | |
2221 | t = uv_to_utf8(tmpbuf,nextmin); | |
dfe13c55 | 2222 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 LW |
2223 | if (diff > 1) { |
2224 | t = uv_to_utf8(tmpbuf, val - 1); | |
2225 | sv_catpvn(transv, "\377", 1); | |
dfe13c55 | 2226 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 LW |
2227 | } |
2228 | } | |
2229 | if (*s == 0xff) | |
2230 | val = utf8_to_uv(s+1, &ulen); | |
2231 | if (val >= nextmin) | |
2232 | nextmin = val + 1; | |
2233 | } | |
2234 | t = uv_to_utf8(tmpbuf,nextmin); | |
dfe13c55 | 2235 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 LW |
2236 | t = uv_to_utf8(tmpbuf, 0x7fffffff); |
2237 | sv_catpvn(transv, "\377", 1); | |
dfe13c55 GS |
2238 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
2239 | t = (U8*)SvPVX(transv); | |
a0ed51b3 LW |
2240 | tlen = SvCUR(transv); |
2241 | tend = t + tlen; | |
2242 | } | |
2243 | else if (!rlen && !del) { | |
2244 | r = t; rlen = tlen; rend = tend; | |
4757a243 LW |
2245 | } |
2246 | if (!squash) { | |
2247 | if (to_utf && from_utf) { /* only counting characters */ | |
2248 | if (t == r || (tlen == rlen && memEQ(t, r, tlen))) | |
2249 | o->op_private |= OPpTRANS_IDENTICAL; | |
2250 | } | |
2251 | else { /* straight latin-1 translation */ | |
2252 | if (tlen == 4 && memEQ(t, "\0\377\303\277", 4) && | |
2253 | rlen == 4 && memEQ(r, "\0\377\303\277", 4)) | |
2254 | o->op_private |= OPpTRANS_IDENTICAL; | |
2255 | } | |
a0ed51b3 LW |
2256 | } |
2257 | ||
2258 | while (t < tend || tfirst <= tlast) { | |
2259 | /* see if we need more "t" chars */ | |
2260 | if (tfirst > tlast) { | |
2261 | tfirst = (I32)utf8_to_uv(t, &ulen); | |
2262 | t += ulen; | |
2263 | if (t < tend && *t == 0xff) { /* illegal utf8 val indicates range */ | |
2264 | tlast = (I32)utf8_to_uv(++t, &ulen); | |
2265 | t += ulen; | |
2266 | } | |
2267 | else | |
2268 | tlast = tfirst; | |
2269 | } | |
2270 | ||
2271 | /* now see if we need more "r" chars */ | |
2272 | if (rfirst > rlast) { | |
2273 | if (r < rend) { | |
2274 | rfirst = (I32)utf8_to_uv(r, &ulen); | |
2275 | r += ulen; | |
2276 | if (r < rend && *r == 0xff) { /* illegal utf8 val indicates range */ | |
2277 | rlast = (I32)utf8_to_uv(++r, &ulen); | |
2278 | r += ulen; | |
2279 | } | |
2280 | else | |
2281 | rlast = rfirst; | |
2282 | } | |
2283 | else { | |
2284 | if (!havefinal++) | |
2285 | final = rlast; | |
2286 | rfirst = rlast = 0xffffffff; | |
2287 | } | |
2288 | } | |
2289 | ||
2290 | /* now see which range will peter our first, if either. */ | |
2291 | tdiff = tlast - tfirst; | |
2292 | rdiff = rlast - rfirst; | |
2293 | ||
2294 | if (tdiff <= rdiff) | |
2295 | diff = tdiff; | |
2296 | else | |
2297 | diff = rdiff; | |
2298 | ||
2299 | if (rfirst == 0xffffffff) { | |
2300 | diff = tdiff; /* oops, pretend rdiff is infinite */ | |
2301 | if (diff > 0) | |
2302 | sv_catpvf(listsv, "%04x\t%04x\tXXXX\n", tfirst, tlast); | |
2303 | else | |
2304 | sv_catpvf(listsv, "%04x\t\tXXXX\n", tfirst); | |
2305 | } | |
2306 | else { | |
2307 | if (diff > 0) | |
2308 | sv_catpvf(listsv, "%04x\t%04x\t%04x\n", tfirst, tfirst + diff, rfirst); | |
2309 | else | |
2310 | sv_catpvf(listsv, "%04x\t\t%04x\n", tfirst, rfirst); | |
2311 | ||
2312 | if (rfirst + diff > max) | |
2313 | max = rfirst + diff; | |
2314 | rfirst += diff + 1; | |
2315 | if (!grows) { | |
2316 | if (rfirst <= 0x80) | |
2317 | ; | |
2318 | else if (rfirst <= 0x800) | |
2319 | grows |= (tfirst < 0x80); | |
2320 | else if (rfirst <= 0x10000) | |
2321 | grows |= (tfirst < 0x800); | |
2322 | else if (rfirst <= 0x200000) | |
2323 | grows |= (tfirst < 0x10000); | |
2324 | else if (rfirst <= 0x4000000) | |
2325 | grows |= (tfirst < 0x200000); | |
2326 | else if (rfirst <= 0x80000000) | |
2327 | grows |= (tfirst < 0x4000000); | |
2328 | } | |
2329 | } | |
2330 | tfirst += diff + 1; | |
2331 | } | |
2332 | ||
2333 | none = ++max; | |
2334 | if (del) | |
2335 | del = ++max; | |
2336 | ||
2337 | if (max > 0xffff) | |
2338 | bits = 32; | |
2339 | else if (max > 0xff) | |
2340 | bits = 16; | |
2341 | else | |
2342 | bits = 8; | |
2343 | ||
2344 | cSVOPo->op_sv = (SV*)swash_init("utf8", "", listsv, bits, none); | |
2345 | SvREFCNT_dec(listsv); | |
2346 | if (transv) | |
2347 | SvREFCNT_dec(transv); | |
2348 | ||
2349 | if (!del && havefinal) | |
2350 | (void)hv_store((HV*)SvRV((cSVOPo->op_sv)), "FINAL", 5, newSViv((IV)final), 0); | |
2351 | ||
2352 | if (grows && to_utf) | |
2353 | o->op_private |= OPpTRANS_GROWS; | |
2354 | ||
2355 | op_free(expr); | |
2356 | op_free(repl); | |
2357 | return o; | |
2358 | } | |
2359 | ||
2360 | tbl = (short*)cPVOPo->op_pv; | |
79072805 LW |
2361 | if (complement) { |
2362 | Zero(tbl, 256, short); | |
2363 | for (i = 0; i < tlen; i++) | |
ec49126f | 2364 | tbl[t[i]] = -1; |
79072805 LW |
2365 | for (i = 0, j = 0; i < 256; i++) { |
2366 | if (!tbl[i]) { | |
2367 | if (j >= rlen) { | |
a0ed51b3 | 2368 | if (del) |
79072805 LW |
2369 | tbl[i] = -2; |
2370 | else if (rlen) | |
ec49126f | 2371 | tbl[i] = r[j-1]; |
79072805 LW |
2372 | else |
2373 | tbl[i] = i; | |
2374 | } | |
2375 | else | |
ec49126f | 2376 | tbl[i] = r[j++]; |
79072805 LW |
2377 | } |
2378 | } | |
2379 | } | |
2380 | else { | |
a0ed51b3 | 2381 | if (!rlen && !del) { |
79072805 | 2382 | r = t; rlen = tlen; |
5d06d08e | 2383 | if (!squash) |
4757a243 | 2384 | o->op_private |= OPpTRANS_IDENTICAL; |
79072805 LW |
2385 | } |
2386 | for (i = 0; i < 256; i++) | |
2387 | tbl[i] = -1; | |
2388 | for (i = 0, j = 0; i < tlen; i++,j++) { | |
2389 | if (j >= rlen) { | |
a0ed51b3 | 2390 | if (del) { |
ec49126f | 2391 | if (tbl[t[i]] == -1) |
2392 | tbl[t[i]] = -2; | |
79072805 LW |
2393 | continue; |
2394 | } | |
2395 | --j; | |
2396 | } | |
ec49126f | 2397 | if (tbl[t[i]] == -1) |
2398 | tbl[t[i]] = r[j]; | |
79072805 LW |
2399 | } |
2400 | } | |
2401 | op_free(expr); | |
2402 | op_free(repl); | |
2403 | ||
11343788 | 2404 | return o; |
79072805 LW |
2405 | } |
2406 | ||
2407 | OP * | |
8ac85365 | 2408 | newPMOP(I32 type, I32 flags) |
79072805 | 2409 | { |
11343788 | 2410 | dTHR; |
79072805 LW |
2411 | PMOP *pmop; |
2412 | ||
2413 | Newz(1101, pmop, 1, PMOP); | |
2414 | pmop->op_type = type; | |
22c35a8c | 2415 | pmop->op_ppaddr = PL_ppaddr[type]; |
79072805 | 2416 | pmop->op_flags = flags; |
c07a80fd | 2417 | pmop->op_private = 0 | (flags >> 8); |
79072805 | 2418 | |
3280af22 | 2419 | if (PL_hints & HINT_RE_TAINT) |
b3eb6a9b | 2420 | pmop->op_pmpermflags |= PMf_RETAINT; |
3280af22 | 2421 | if (PL_hints & HINT_LOCALE) |
b3eb6a9b GS |
2422 | pmop->op_pmpermflags |= PMf_LOCALE; |
2423 | pmop->op_pmflags = pmop->op_pmpermflags; | |
36477c24 | 2424 | |
79072805 | 2425 | /* link into pm list */ |
3280af22 NIS |
2426 | if (type != OP_TRANS && PL_curstash) { |
2427 | pmop->op_pmnext = HvPMROOT(PL_curstash); | |
2428 | HvPMROOT(PL_curstash) = pmop; | |
79072805 LW |
2429 | } |
2430 | ||
2431 | return (OP*)pmop; | |
2432 | } | |
2433 | ||
2434 | OP * | |
8ac85365 | 2435 | pmruntime(OP *o, OP *expr, OP *repl) |
79072805 | 2436 | { |
5c0ca799 | 2437 | dTHR; |
79072805 LW |
2438 | PMOP *pm; |
2439 | LOGOP *rcop; | |
ce862d02 | 2440 | I32 repl_has_vars = 0; |
79072805 | 2441 | |
11343788 MB |
2442 | if (o->op_type == OP_TRANS) |
2443 | return pmtrans(o, expr, repl); | |
79072805 | 2444 | |
3280af22 | 2445 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 2446 | pm = (PMOP*)o; |
79072805 LW |
2447 | |
2448 | if (expr->op_type == OP_CONST) { | |
463ee0b2 | 2449 | STRLEN plen; |
79072805 | 2450 | SV *pat = ((SVOP*)expr)->op_sv; |
463ee0b2 | 2451 | char *p = SvPV(pat, plen); |
11343788 | 2452 | if ((o->op_flags & OPf_SPECIAL) && strEQ(p, " ")) { |
93a17b20 | 2453 | sv_setpvn(pat, "\\s+", 3); |
463ee0b2 | 2454 | p = SvPV(pat, plen); |
79072805 LW |
2455 | pm->op_pmflags |= PMf_SKIPWHITE; |
2456 | } | |
15e52e56 | 2457 | pm->op_pmregexp = CALLREGCOMP(p, p + plen, pm); |
aeea060c | 2458 | if (strEQ("\\s+", pm->op_pmregexp->precomp)) |
85e6fe83 | 2459 | pm->op_pmflags |= PMf_WHITE; |
79072805 LW |
2460 | op_free(expr); |
2461 | } | |
2462 | else { | |
3280af22 NIS |
2463 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) |
2464 | expr = newUNOP((!(PL_hints & HINT_RE_EVAL) | |
2cd61cdb IZ |
2465 | ? OP_REGCRESET |
2466 | : OP_REGCMAYBE),0,expr); | |
463ee0b2 | 2467 | |
79072805 LW |
2468 | Newz(1101, rcop, 1, LOGOP); |
2469 | rcop->op_type = OP_REGCOMP; | |
22c35a8c | 2470 | rcop->op_ppaddr = PL_ppaddr[OP_REGCOMP]; |
79072805 | 2471 | rcop->op_first = scalar(expr); |
3280af22 | 2472 | rcop->op_flags |= ((PL_hints & HINT_RE_EVAL) |
2cd61cdb IZ |
2473 | ? (OPf_SPECIAL | OPf_KIDS) |
2474 | : OPf_KIDS); | |
79072805 | 2475 | rcop->op_private = 1; |
11343788 | 2476 | rcop->op_other = o; |
79072805 LW |
2477 | |
2478 | /* establish postfix order */ | |
3280af22 | 2479 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) { |
463ee0b2 LW |
2480 | LINKLIST(expr); |
2481 | rcop->op_next = expr; | |
2482 | ((UNOP*)expr)->op_first->op_next = (OP*)rcop; | |
2483 | } | |
2484 | else { | |
2485 | rcop->op_next = LINKLIST(expr); | |
2486 | expr->op_next = (OP*)rcop; | |
2487 | } | |
79072805 | 2488 | |
11343788 | 2489 | prepend_elem(o->op_type, scalar((OP*)rcop), o); |
79072805 LW |
2490 | } |
2491 | ||
2492 | if (repl) { | |
748a9306 LW |
2493 | OP *curop; |
2494 | if (pm->op_pmflags & PMf_EVAL) | |
2495 | curop = 0; | |
554b3eca | 2496 | #ifdef USE_THREADS |
2faa37cc | 2497 | else if (repl->op_type == OP_THREADSV |
554b3eca | 2498 | && strchr("&`'123456789+", |
533c011a | 2499 | PL_threadsv_names[repl->op_targ])) |
554b3eca MB |
2500 | { |
2501 | curop = 0; | |
2502 | } | |
2503 | #endif /* USE_THREADS */ | |
748a9306 LW |
2504 | else if (repl->op_type == OP_CONST) |
2505 | curop = repl; | |
79072805 | 2506 | else { |
79072805 LW |
2507 | OP *lastop = 0; |
2508 | for (curop = LINKLIST(repl); curop!=repl; curop = LINKLIST(curop)) { | |
22c35a8c | 2509 | if (PL_opargs[curop->op_type] & OA_DANGEROUS) { |
554b3eca | 2510 | #ifdef USE_THREADS |
ce862d02 IZ |
2511 | if (curop->op_type == OP_THREADSV) { |
2512 | repl_has_vars = 1; | |
be949f6f | 2513 | if (strchr("&`'123456789+", curop->op_private)) |
ce862d02 | 2514 | break; |
554b3eca MB |
2515 | } |
2516 | #else | |
79072805 LW |
2517 | if (curop->op_type == OP_GV) { |
2518 | GV *gv = ((GVOP*)curop)->op_gv; | |
ce862d02 | 2519 | repl_has_vars = 1; |
93a17b20 | 2520 | if (strchr("&`'123456789+", *GvENAME(gv))) |
79072805 LW |
2521 | break; |
2522 | } | |
554b3eca | 2523 | #endif /* USE_THREADS */ |
79072805 LW |
2524 | else if (curop->op_type == OP_RV2CV) |
2525 | break; | |
2526 | else if (curop->op_type == OP_RV2SV || | |
2527 | curop->op_type == OP_RV2AV || | |
2528 | curop->op_type == OP_RV2HV || | |
2529 | curop->op_type == OP_RV2GV) { | |
2530 | if (lastop && lastop->op_type != OP_GV) /*funny deref?*/ | |
2531 | break; | |
2532 | } | |
748a9306 LW |
2533 | else if (curop->op_type == OP_PADSV || |
2534 | curop->op_type == OP_PADAV || | |
2535 | curop->op_type == OP_PADHV || | |
554b3eca | 2536 | curop->op_type == OP_PADANY) { |
ce862d02 | 2537 | repl_has_vars = 1; |
748a9306 | 2538 | } |
1167e5da SM |
2539 | else if (curop->op_type == OP_PUSHRE) |
2540 | ; /* Okay here, dangerous in newASSIGNOP */ | |
79072805 LW |
2541 | else |
2542 | break; | |
2543 | } | |
2544 | lastop = curop; | |
2545 | } | |
748a9306 | 2546 | } |
ce862d02 IZ |
2547 | if (curop == repl |
2548 | && !(repl_has_vars | |
2549 | && (!pm->op_pmregexp | |
2550 | || pm->op_pmregexp->reganch & ROPT_EVAL_SEEN))) { | |
748a9306 | 2551 | pm->op_pmflags |= PMf_CONST; /* const for long enough */ |
4633a7c4 | 2552 | pm->op_pmpermflags |= PMf_CONST; /* const for long enough */ |
11343788 | 2553 | prepend_elem(o->op_type, scalar(repl), o); |
748a9306 LW |
2554 | } |
2555 | else { | |
ce862d02 IZ |
2556 | if (curop == repl && !pm->op_pmregexp) { /* Has variables. */ |
2557 | pm->op_pmflags |= PMf_MAYBE_CONST; | |
2558 | pm->op_pmpermflags |= PMf_MAYBE_CONST; | |
2559 | } | |
748a9306 LW |
2560 | Newz(1101, rcop, 1, LOGOP); |
2561 | rcop->op_type = OP_SUBSTCONT; | |
22c35a8c | 2562 | rcop->op_ppaddr = PL_ppaddr[OP_SUBSTCONT]; |
748a9306 LW |
2563 | rcop->op_first = scalar(repl); |
2564 | rcop->op_flags |= OPf_KIDS; | |
2565 | rcop->op_private = 1; | |
11343788 | 2566 | rcop->op_other = o; |
748a9306 LW |
2567 | |
2568 | /* establish postfix order */ | |
2569 | rcop->op_next = LINKLIST(repl); | |
2570 | repl->op_next = (OP*)rcop; | |
2571 | ||
2572 | pm->op_pmreplroot = scalar((OP*)rcop); | |
2573 | pm->op_pmreplstart = LINKLIST(rcop); | |
2574 | rcop->op_next = 0; | |
79072805 LW |
2575 | } |
2576 | } | |
2577 | ||
2578 | return (OP*)pm; | |
2579 | } | |
2580 | ||
2581 | OP * | |
8ac85365 | 2582 | newSVOP(I32 type, I32 flags, SV *sv) |
79072805 LW |
2583 | { |
2584 | SVOP *svop; | |
2585 | Newz(1101, svop, 1, SVOP); | |
2586 | svop->op_type = type; | |
22c35a8c | 2587 | svop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2588 | svop->op_sv = sv; |
2589 | svop->op_next = (OP*)svop; | |
2590 | svop->op_flags = flags; | |
22c35a8c | 2591 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 2592 | scalar((OP*)svop); |
22c35a8c | 2593 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 2594 | svop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2595 | return CHECKOP(type, svop); |
79072805 LW |
2596 | } |
2597 | ||
2598 | OP * | |
8ac85365 | 2599 | newGVOP(I32 type, I32 flags, GV *gv) |
79072805 | 2600 | { |
11343788 | 2601 | dTHR; |
79072805 LW |
2602 | GVOP *gvop; |
2603 | Newz(1101, gvop, 1, GVOP); | |
2604 | gvop->op_type = type; | |
22c35a8c | 2605 | gvop->op_ppaddr = PL_ppaddr[type]; |
8990e307 | 2606 | gvop->op_gv = (GV*)SvREFCNT_inc(gv); |
79072805 LW |
2607 | gvop->op_next = (OP*)gvop; |
2608 | gvop->op_flags = flags; | |
22c35a8c | 2609 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 2610 | scalar((OP*)gvop); |
22c35a8c | 2611 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 2612 | gvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2613 | return CHECKOP(type, gvop); |
79072805 LW |
2614 | } |
2615 | ||
2616 | OP * | |
8ac85365 | 2617 | newPVOP(I32 type, I32 flags, char *pv) |
79072805 LW |
2618 | { |
2619 | PVOP *pvop; | |
2620 | Newz(1101, pvop, 1, PVOP); | |
2621 | pvop->op_type = type; | |
22c35a8c | 2622 | pvop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2623 | pvop->op_pv = pv; |
2624 | pvop->op_next = (OP*)pvop; | |
2625 | pvop->op_flags = flags; | |
22c35a8c | 2626 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 2627 | scalar((OP*)pvop); |
22c35a8c | 2628 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 2629 | pvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2630 | return CHECKOP(type, pvop); |
79072805 LW |
2631 | } |
2632 | ||
79072805 | 2633 | void |
8ac85365 | 2634 | package(OP *o) |
79072805 | 2635 | { |
11343788 | 2636 | dTHR; |
93a17b20 | 2637 | SV *sv; |
79072805 | 2638 | |
3280af22 NIS |
2639 | save_hptr(&PL_curstash); |
2640 | save_item(PL_curstname); | |
11343788 | 2641 | if (o) { |
463ee0b2 LW |
2642 | STRLEN len; |
2643 | char *name; | |
11343788 | 2644 | sv = cSVOPo->op_sv; |
463ee0b2 | 2645 | name = SvPV(sv, len); |
3280af22 NIS |
2646 | PL_curstash = gv_stashpvn(name,len,TRUE); |
2647 | sv_setpvn(PL_curstname, name, len); | |
11343788 | 2648 | op_free(o); |
93a17b20 LW |
2649 | } |
2650 | else { | |
3280af22 NIS |
2651 | sv_setpv(PL_curstname,"<none>"); |
2652 | PL_curstash = Nullhv; | |
93a17b20 | 2653 | } |
7ad382f4 | 2654 | PL_hints |= HINT_BLOCK_SCOPE; |
3280af22 NIS |
2655 | PL_copline = NOLINE; |
2656 | PL_expect = XSTATE; | |
79072805 LW |
2657 | } |
2658 | ||
85e6fe83 | 2659 | void |
8ac85365 | 2660 | utilize(int aver, I32 floor, OP *version, OP *id, OP *arg) |
85e6fe83 | 2661 | { |
a0d0e21e LW |
2662 | OP *pack; |
2663 | OP *meth; | |
2664 | OP *rqop; | |
2665 | OP *imop; | |
b1cb66bf | 2666 | OP *veop; |
78ca652e | 2667 | GV *gv; |
85e6fe83 | 2668 | |
a0d0e21e LW |
2669 | if (id->op_type != OP_CONST) |
2670 | croak("Module name must be constant"); | |
85e6fe83 | 2671 | |
b1cb66bf | 2672 | veop = Nullop; |
2673 | ||
2674 | if(version != Nullop) { | |
2675 | SV *vesv = ((SVOP*)version)->op_sv; | |
2676 | ||
2677 | if (arg == Nullop && !SvNIOK(vesv)) { | |
2678 | arg = version; | |
2679 | } | |
2680 | else { | |
2681 | OP *pack; | |
2682 | OP *meth; | |
2683 | ||
2684 | if (version->op_type != OP_CONST || !SvNIOK(vesv)) | |
2685 | croak("Version number must be constant number"); | |
2686 | ||
2687 | /* Make copy of id so we don't free it twice */ | |
2688 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); | |
2689 | ||
2690 | /* Fake up a method call to VERSION */ | |
2691 | meth = newSVOP(OP_CONST, 0, newSVpv("VERSION", 7)); | |
2692 | veop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, | |
2693 | append_elem(OP_LIST, | |
2694 | prepend_elem(OP_LIST, pack, list(version)), | |
2695 | newUNOP(OP_METHOD, 0, meth))); | |
2696 | } | |
2697 | } | |
aeea060c | 2698 | |
a0d0e21e | 2699 | /* Fake up an import/unimport */ |
4633a7c4 LW |
2700 | if (arg && arg->op_type == OP_STUB) |
2701 | imop = arg; /* no import on explicit () */ | |
b1cb66bf | 2702 | else if(SvNIOK(((SVOP*)id)->op_sv)) { |
2703 | imop = Nullop; /* use 5.0; */ | |
2704 | } | |
4633a7c4 LW |
2705 | else { |
2706 | /* Make copy of id so we don't free it twice */ | |
2707 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); | |
4633a7c4 LW |
2708 | meth = newSVOP(OP_CONST, 0, |
2709 | aver | |
2710 | ? newSVpv("import", 6) | |
2711 | : newSVpv("unimport", 8) | |
2712 | ); | |
2713 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, | |
a0d0e21e LW |
2714 | append_elem(OP_LIST, |
2715 | prepend_elem(OP_LIST, pack, list(arg)), | |
2716 | newUNOP(OP_METHOD, 0, meth))); | |
4633a7c4 LW |
2717 | } |
2718 | ||
78ca652e GS |
2719 | /* Fake up a require, handle override, if any */ |
2720 | gv = gv_fetchpv("require", FALSE, SVt_PVCV); | |
2721 | if (!(gv && GvIMPORTED_CV(gv))) | |
2722 | gv = gv_fetchpv("CORE::GLOBAL::require", FALSE, SVt_PVCV); | |
2723 | ||
2724 | if (gv && GvIMPORTED_CV(gv)) { | |
2725 | rqop = ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, | |
2726 | append_elem(OP_LIST, id, | |
2727 | scalar(newUNOP(OP_RV2CV, 0, | |
2728 | newGVOP(OP_GV, 0, | |
2729 | gv)))))); | |
2730 | } | |
2731 | else { | |
2732 | rqop = newUNOP(OP_REQUIRE, 0, id); | |
2733 | } | |
a0d0e21e LW |
2734 | |
2735 | /* Fake up the BEGIN {}, which does its thing immediately. */ | |
c07a80fd | 2736 | newSUB(floor, |
a0d0e21e | 2737 | newSVOP(OP_CONST, 0, newSVpv("BEGIN", 5)), |
4633a7c4 | 2738 | Nullop, |
a0d0e21e | 2739 | append_elem(OP_LINESEQ, |
b1cb66bf | 2740 | append_elem(OP_LINESEQ, |
2741 | newSTATEOP(0, Nullch, rqop), | |
2742 | newSTATEOP(0, Nullch, veop)), | |
a0d0e21e | 2743 | newSTATEOP(0, Nullch, imop) )); |
85e6fe83 | 2744 | |
3280af22 NIS |
2745 | PL_copline = NOLINE; |
2746 | PL_expect = XSTATE; | |
85e6fe83 LW |
2747 | } |
2748 | ||
79072805 | 2749 | OP * |
78ca652e GS |
2750 | dofile(OP *term) |
2751 | { | |
2752 | OP *doop; | |
2753 | GV *gv; | |
2754 | ||
2755 | gv = gv_fetchpv("do", FALSE, SVt_PVCV); | |
2756 | if (!(gv && GvIMPORTED_CV(gv))) | |
2757 | gv = gv_fetchpv("CORE::GLOBAL::do", FALSE, SVt_PVCV); | |
2758 | ||
2759 | if (gv && GvIMPORTED_CV(gv)) { | |
2760 | doop = ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, | |
2761 | append_elem(OP_LIST, term, | |
2762 | scalar(newUNOP(OP_RV2CV, 0, | |
2763 | newGVOP(OP_GV, 0, | |
2764 | gv)))))); | |
2765 | } | |
2766 | else { | |
2767 | doop = newUNOP(OP_DOFILE, 0, scalar(term)); | |
2768 | } | |
2769 | return doop; | |
2770 | } | |
2771 | ||
2772 | OP * | |
8ac85365 | 2773 | newSLICEOP(I32 flags, OP *subscript, OP *listval) |
79072805 LW |
2774 | { |
2775 | return newBINOP(OP_LSLICE, flags, | |
8990e307 LW |
2776 | list(force_list(subscript)), |
2777 | list(force_list(listval)) ); | |
79072805 LW |
2778 | } |
2779 | ||
76e3520e | 2780 | STATIC I32 |
8ac85365 | 2781 | list_assignment(register OP *o) |
79072805 | 2782 | { |
11343788 | 2783 | if (!o) |
79072805 LW |
2784 | return TRUE; |
2785 | ||
11343788 MB |
2786 | if (o->op_type == OP_NULL && o->op_flags & OPf_KIDS) |
2787 | o = cUNOPo->op_first; | |
79072805 | 2788 | |
11343788 MB |
2789 | if (o->op_type == OP_COND_EXPR) { |
2790 | I32 t = list_assignment(cCONDOPo->op_first->op_sibling); | |
2791 | I32 f = list_assignment(cCONDOPo->op_first->op_sibling->op_sibling); | |
79072805 LW |
2792 | |
2793 | if (t && f) | |
2794 | return TRUE; | |
2795 | if (t || f) | |
2796 | yyerror("Assignment to both a list and a scalar"); | |
2797 | return FALSE; | |
2798 | } | |
2799 | ||
11343788 MB |
2800 | if (o->op_type == OP_LIST || o->op_flags & OPf_PARENS || |
2801 | o->op_type == OP_RV2AV || o->op_type == OP_RV2HV || | |
2802 | o->op_type == OP_ASLICE || o->op_type == OP_HSLICE) | |
79072805 LW |
2803 | return TRUE; |
2804 | ||
11343788 | 2805 | if (o->op_type == OP_PADAV || o->op_type == OP_PADHV) |
93a17b20 LW |
2806 | return TRUE; |
2807 | ||
11343788 | 2808 | if (o->op_type == OP_RV2SV) |
79072805 LW |
2809 | return FALSE; |
2810 | ||
2811 | return FALSE; | |
2812 | } | |
2813 | ||
2814 | OP * | |
8ac85365 | 2815 | newASSIGNOP(I32 flags, OP *left, I32 optype, OP *right) |
79072805 | 2816 | { |
11343788 | 2817 | OP *o; |
79072805 | 2818 | |
a0d0e21e LW |
2819 | if (optype) { |
2820 | if (optype == OP_ANDASSIGN || optype == OP_ORASSIGN) { | |
2821 | return newLOGOP(optype, 0, | |
2822 | mod(scalar(left), optype), | |
2823 | newUNOP(OP_SASSIGN, 0, scalar(right))); | |
2824 | } | |
2825 | else { | |
2826 | return newBINOP(optype, OPf_STACKED, | |
2827 | mod(scalar(left), optype), scalar(right)); | |
2828 | } | |
2829 | } | |
2830 | ||
79072805 | 2831 | if (list_assignment(left)) { |
6ee623d5 | 2832 | dTHR; |
3280af22 NIS |
2833 | PL_modcount = 0; |
2834 | PL_eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ | |
463ee0b2 | 2835 | left = mod(left, OP_AASSIGN); |
3280af22 NIS |
2836 | if (PL_eval_start) |
2837 | PL_eval_start = 0; | |
748a9306 | 2838 | else { |
a0d0e21e LW |
2839 | op_free(left); |
2840 | op_free(right); | |
2841 | return Nullop; | |
2842 | } | |
11343788 | 2843 | o = newBINOP(OP_AASSIGN, flags, |
8990e307 LW |
2844 | list(force_list(right)), |
2845 | list(force_list(left)) ); | |
11343788 | 2846 | o->op_private = 0 | (flags >> 8); |
a0d0e21e | 2847 | if (!(left->op_private & OPpLVAL_INTRO)) { |
79072805 | 2848 | OP *curop; |
11343788 | 2849 | OP *lastop = o; |
3280af22 | 2850 | PL_generation++; |
11343788 | 2851 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
22c35a8c | 2852 | if (PL_opargs[curop->op_type] & OA_DANGEROUS) { |
79072805 LW |
2853 | if (curop->op_type == OP_GV) { |
2854 | GV *gv = ((GVOP*)curop)->op_gv; | |
3280af22 | 2855 | if (gv == PL_defgv || SvCUR(gv) == PL_generation) |
79072805 | 2856 | break; |
3280af22 | 2857 | SvCUR(gv) = PL_generation; |
79072805 | 2858 | } |
748a9306 LW |
2859 | else if (curop->op_type == OP_PADSV || |
2860 | curop->op_type == OP_PADAV || | |
2861 | curop->op_type == OP_PADHV || | |
2862 | curop->op_type == OP_PADANY) { | |
3280af22 | 2863 | SV **svp = AvARRAY(PL_comppad_name); |
8e07c86e | 2864 | SV *sv = svp[curop->op_targ]; |
3280af22 | 2865 | if (SvCUR(sv) == PL_generation) |
748a9306 | 2866 | break; |
3280af22 | 2867 | SvCUR(sv) = PL_generation; /* (SvCUR not used any more) */ |
748a9306 | 2868 | } |
79072805 LW |
2869 | else if (curop->op_type == OP_RV2CV) |
2870 | break; | |
2871 | else if (curop->op_type == OP_RV2SV || | |
2872 | curop->op_type == OP_RV2AV || | |
2873 | curop->op_type == OP_RV2HV || | |
2874 | curop->op_type == OP_RV2GV) { | |
2875 | if (lastop->op_type != OP_GV) /* funny deref? */ | |
2876 | break; | |
2877 | } | |
1167e5da SM |
2878 | else if (curop->op_type == OP_PUSHRE) { |
2879 | if (((PMOP*)curop)->op_pmreplroot) { | |
2880 | GV *gv = (GV*)((PMOP*)curop)->op_pmreplroot; | |
3280af22 | 2881 | if (gv == PL_defgv || SvCUR(gv) == PL_generation) |
1167e5da | 2882 | break; |
3280af22 | 2883 | SvCUR(gv) = PL_generation; |
1167e5da SM |
2884 | } |
2885 | } | |
79072805 LW |
2886 | else |
2887 | break; | |
2888 | } | |
2889 | lastop = curop; | |
2890 | } | |
11343788 MB |
2891 | if (curop != o) |
2892 | o->op_private = OPpASSIGN_COMMON; | |
79072805 | 2893 | } |
c07a80fd | 2894 | if (right && right->op_type == OP_SPLIT) { |
2895 | OP* tmpop; | |
2896 | if ((tmpop = ((LISTOP*)right)->op_first) && | |
2897 | tmpop->op_type == OP_PUSHRE) | |
2898 | { | |
2899 | PMOP *pm = (PMOP*)tmpop; | |
2900 | if (left->op_type == OP_RV2AV && | |
2901 | !(left->op_private & OPpLVAL_INTRO) && | |
11343788 | 2902 | !(o->op_private & OPpASSIGN_COMMON) ) |
c07a80fd | 2903 | { |
2904 | tmpop = ((UNOP*)left)->op_first; | |
2905 | if (tmpop->op_type == OP_GV && !pm->op_pmreplroot) { | |
2906 | pm->op_pmreplroot = (OP*)((GVOP*)tmpop)->op_gv; | |
2907 | pm->op_pmflags |= PMf_ONCE; | |
11343788 | 2908 | tmpop = cUNOPo->op_first; /* to list (nulled) */ |
c07a80fd | 2909 | tmpop = ((UNOP*)tmpop)->op_first; /* to pushmark */ |
2910 | tmpop->op_sibling = Nullop; /* don't free split */ | |
2911 | right->op_next = tmpop->op_next; /* fix starting loc */ | |
11343788 | 2912 | op_free(o); /* blow off assign */ |
54310121 | 2913 | right->op_flags &= ~OPf_WANT; |
a5f75d66 | 2914 | /* "I don't know and I don't care." */ |
c07a80fd | 2915 | return right; |
2916 | } | |
2917 | } | |
2918 | else { | |
3280af22 | 2919 | if (PL_modcount < 10000 && |
c07a80fd | 2920 | ((LISTOP*)right)->op_last->op_type == OP_CONST) |
2921 | { | |
2922 | SV *sv = ((SVOP*)((LISTOP*)right)->op_last)->op_sv; | |
2923 | if (SvIVX(sv) == 0) | |
3280af22 | 2924 | sv_setiv(sv, PL_modcount+1); |
c07a80fd | 2925 | } |
2926 | } | |
2927 | } | |
2928 | } | |
11343788 | 2929 | return o; |
79072805 LW |
2930 | } |
2931 | if (!right) | |
2932 | right = newOP(OP_UNDEF, 0); | |
2933 | if (right->op_type == OP_READLINE) { | |
2934 | right->op_flags |= OPf_STACKED; | |
463ee0b2 | 2935 | return newBINOP(OP_NULL, flags, mod(scalar(left), OP_SASSIGN), scalar(right)); |
79072805 | 2936 | } |
a0d0e21e | 2937 | else { |
3280af22 | 2938 | PL_eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ |
11343788 | 2939 | o = newBINOP(OP_SASSIGN, flags, |
463ee0b2 | 2940 | scalar(right), mod(scalar(left), OP_SASSIGN) ); |
3280af22 NIS |
2941 | if (PL_eval_start) |
2942 | PL_eval_start = 0; | |
748a9306 | 2943 | else { |
11343788 | 2944 | op_free(o); |
a0d0e21e LW |
2945 | return Nullop; |
2946 | } | |
2947 | } | |
11343788 | 2948 | return o; |
79072805 LW |
2949 | } |
2950 | ||
2951 | OP * | |
8ac85365 | 2952 | newSTATEOP(I32 flags, char *label, OP *o) |
79072805 | 2953 | { |
11343788 | 2954 | dTHR; |
bbce6d69 | 2955 | U32 seq = intro_my(); |
79072805 LW |
2956 | register COP *cop; |
2957 | ||
2958 | Newz(1101, cop, 1, COP); | |
3280af22 | 2959 | if (PERLDB_LINE && PL_curcop->cop_line && PL_curstash != PL_debstash) { |
8990e307 | 2960 | cop->op_type = OP_DBSTATE; |
22c35a8c | 2961 | cop->op_ppaddr = PL_ppaddr[ OP_DBSTATE ]; |
8990e307 LW |
2962 | } |
2963 | else { | |
2964 | cop->op_type = OP_NEXTSTATE; | |
22c35a8c | 2965 | cop->op_ppaddr = PL_ppaddr[ OP_NEXTSTATE ]; |
8990e307 | 2966 | } |
79072805 | 2967 | cop->op_flags = flags; |
a0ed51b3 | 2968 | cop->op_private = (PL_hints & HINT_UTF8); |
ff0cee69 | 2969 | #ifdef NATIVE_HINTS |
2970 | cop->op_private |= NATIVE_HINTS; | |
2971 | #endif | |
e24b16f9 | 2972 | PL_compiling.op_private = cop->op_private; |
79072805 LW |
2973 | cop->op_next = (OP*)cop; |
2974 | ||
463ee0b2 LW |
2975 | if (label) { |
2976 | cop->cop_label = label; | |
3280af22 | 2977 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 2978 | } |
bbce6d69 | 2979 | cop->cop_seq = seq; |
3280af22 | 2980 | cop->cop_arybase = PL_curcop->cop_arybase; |
599cee73 PM |
2981 | if (PL_curcop->cop_warnings == WARN_NONE |
2982 | || PL_curcop->cop_warnings == WARN_ALL) | |
2983 | cop->cop_warnings = PL_curcop->cop_warnings ; | |
2984 | else | |
2985 | cop->cop_warnings = newSVsv(PL_curcop->cop_warnings) ; | |
2986 | ||
79072805 | 2987 | |
3280af22 NIS |
2988 | if (PL_copline == NOLINE) |
2989 | cop->cop_line = PL_curcop->cop_line; | |
79072805 | 2990 | else { |
3280af22 NIS |
2991 | cop->cop_line = PL_copline; |
2992 | PL_copline = NOLINE; | |
79072805 | 2993 | } |
3280af22 NIS |
2994 | cop->cop_filegv = (GV*)SvREFCNT_inc(PL_curcop->cop_filegv); |
2995 | cop->cop_stash = PL_curstash; | |
79072805 | 2996 | |
3280af22 NIS |
2997 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
2998 | SV **svp = av_fetch(GvAV(PL_curcop->cop_filegv),(I32)cop->cop_line, FALSE); | |
2999 | if (svp && *svp != &PL_sv_undef && !SvIOK(*svp)) { | |
a0d0e21e | 3000 | (void)SvIOK_on(*svp); |
a5f75d66 | 3001 | SvIVX(*svp) = 1; |
93a17b20 LW |
3002 | SvSTASH(*svp) = (HV*)cop; |
3003 | } | |
3004 | } | |
3005 | ||
11343788 | 3006 | return prepend_elem(OP_LINESEQ, (OP*)cop, o); |
79072805 LW |
3007 | } |
3008 | ||
bbce6d69 | 3009 | /* "Introduce" my variables to visible status. */ |
3010 | U32 | |
8ac85365 | 3011 | intro_my(void) |
bbce6d69 | 3012 | { |
3013 | SV **svp; | |
3014 | SV *sv; | |
3015 | I32 i; | |
3016 | ||
3280af22 NIS |
3017 | if (! PL_min_intro_pending) |
3018 | return PL_cop_seqmax; | |
bbce6d69 | 3019 | |
3280af22 NIS |
3020 | svp = AvARRAY(PL_comppad_name); |
3021 | for (i = PL_min_intro_pending; i <= PL_max_intro_pending; i++) { | |
3022 | if ((sv = svp[i]) && sv != &PL_sv_undef && !SvIVX(sv)) { | |
c53d7c7d | 3023 | SvIVX(sv) = PAD_MAX; /* Don't know scope end yet. */ |
3280af22 | 3024 | SvNVX(sv) = (double)PL_cop_seqmax; |
bbce6d69 | 3025 | } |
3026 | } | |
3280af22 NIS |
3027 | PL_min_intro_pending = 0; |
3028 | PL_comppad_name_fill = PL_max_intro_pending; /* Needn't search higher */ | |
3029 | return PL_cop_seqmax++; | |
bbce6d69 | 3030 | } |
3031 | ||
79072805 | 3032 | OP * |
8ac85365 | 3033 | newLOGOP(I32 type, I32 flags, OP *first, OP *other) |
79072805 | 3034 | { |
883ffac3 CS |
3035 | return new_logop(type, flags, &first, &other); |
3036 | } | |
3037 | ||
3bd495df | 3038 | STATIC OP * |
883ffac3 CS |
3039 | new_logop(I32 type, I32 flags, OP** firstp, OP** otherp) |
3040 | { | |
11343788 | 3041 | dTHR; |
79072805 | 3042 | LOGOP *logop; |
11343788 | 3043 | OP *o; |
883ffac3 CS |
3044 | OP *first = *firstp; |
3045 | OP *other = *otherp; | |
79072805 | 3046 | |
a0d0e21e LW |
3047 | if (type == OP_XOR) /* Not short circuit, but here by precedence. */ |
3048 | return newBINOP(type, flags, scalar(first), scalar(other)); | |
3049 | ||
8990e307 | 3050 | scalarboolean(first); |
79072805 LW |
3051 | /* optimize "!a && b" to "a || b", and "!a || b" to "a && b" */ |
3052 | if (first->op_type == OP_NOT && (first->op_flags & OPf_SPECIAL)) { | |
3053 | if (type == OP_AND || type == OP_OR) { | |
3054 | if (type == OP_AND) | |
3055 | type = OP_OR; | |
3056 | else | |
3057 | type = OP_AND; | |
11343788 | 3058 | o = first; |
883ffac3 | 3059 | first = *firstp = cUNOPo->op_first; |
11343788 MB |
3060 | if (o->op_next) |
3061 | first->op_next = o->op_next; | |
3062 | cUNOPo->op_first = Nullop; | |
3063 | op_free(o); | |
79072805 LW |
3064 | } |
3065 | } | |
3066 | if (first->op_type == OP_CONST) { | |
599cee73 PM |
3067 | if (ckWARN(WARN_PRECEDENCE) && (first->op_private & OPpCONST_BARE)) |
3068 | warner(WARN_PRECEDENCE, "Probable precedence problem on %s", | |
22c35a8c | 3069 | PL_op_desc[type]); |
79072805 LW |
3070 | if ((type == OP_AND) == (SvTRUE(((SVOP*)first)->op_sv))) { |
3071 | op_free(first); | |
883ffac3 | 3072 | *firstp = Nullop; |
79072805 LW |
3073 | return other; |
3074 | } | |
3075 | else { | |
3076 | op_free(other); | |
883ffac3 | 3077 | *otherp = Nullop; |
79072805 LW |
3078 | return first; |
3079 | } | |
3080 | } | |
3081 | else if (first->op_type == OP_WANTARRAY) { | |
3082 | if (type == OP_AND) | |
3083 | list(other); | |
3084 | else | |
3085 | scalar(other); | |
3086 | } | |
599cee73 | 3087 | else if (ckWARN(WARN_UNSAFE) && (first->op_flags & OPf_KIDS)) { |
a6006777 | 3088 | OP *k1 = ((UNOP*)first)->op_first; |
3089 | OP *k2 = k1->op_sibling; | |
3090 | OPCODE warnop = 0; | |
3091 | switch (first->op_type) | |
3092 | { | |
3093 | case OP_NULL: | |
3094 | if (k2 && k2->op_type == OP_READLINE | |
3095 | && (k2->op_flags & OPf_STACKED) | |
55d729e4 | 3096 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
a6006777 | 3097 | warnop = k2->op_type; |
3098 | break; | |
3099 | ||
3100 | case OP_SASSIGN: | |
68dc0745 | 3101 | if (k1->op_type == OP_READDIR |
3102 | || k1->op_type == OP_GLOB | |
3103 | || k1->op_type == OP_EACH) | |
a6006777 | 3104 | warnop = k1->op_type; |
3105 | break; | |
3106 | } | |
8ebc5c01 | 3107 | if (warnop) { |
3280af22 NIS |
3108 | line_t oldline = PL_curcop->cop_line; |
3109 | PL_curcop->cop_line = PL_copline; | |
599cee73 PM |
3110 | warner(WARN_UNSAFE, |
3111 | "Value of %s%s can be \"0\"; test with defined()", | |
22c35a8c | 3112 | PL_op_desc[warnop], |
68dc0745 | 3113 | ((warnop == OP_READLINE || warnop == OP_GLOB) |
3114 | ? " construct" : "() operator")); | |
3280af22 | 3115 | PL_curcop->cop_line = oldline; |
8ebc5c01 | 3116 | } |
a6006777 | 3117 | } |
79072805 LW |
3118 | |
3119 | if (!other) | |
3120 | return first; | |
3121 | ||
a0d0e21e LW |
3122 | if (type == OP_ANDASSIGN || type == OP_ORASSIGN) |
3123 | other->op_private |= OPpASSIGN_BACKWARDS; /* other is an OP_SASSIGN */ | |
3124 | ||
79072805 LW |
3125 | Newz(1101, logop, 1, LOGOP); |
3126 | ||
3127 | logop->op_type = type; | |
22c35a8c | 3128 | logop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
3129 | logop->op_first = first; |
3130 | logop->op_flags = flags | OPf_KIDS; | |
3131 | logop->op_other = LINKLIST(other); | |
c07a80fd | 3132 | logop->op_private = 1 | (flags >> 8); |
79072805 LW |
3133 | |
3134 | /* establish postfix order */ | |
3135 | logop->op_next = LINKLIST(first); | |
3136 | first->op_next = (OP*)logop; | |
3137 | first->op_sibling = other; | |
3138 | ||
11343788 MB |
3139 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
3140 | other->op_next = o; | |
79072805 | 3141 | |
11343788 | 3142 | return o; |
79072805 LW |
3143 | } |
3144 | ||
3145 | OP * | |
8ac85365 | 3146 | newCONDOP(I32 flags, OP *first, OP *trueop, OP *falseop) |
79072805 | 3147 | { |
11343788 | 3148 | dTHR; |
79072805 | 3149 | CONDOP *condop; |
11343788 | 3150 | OP *o; |
79072805 | 3151 | |
b1cb66bf | 3152 | if (!falseop) |
3153 | return newLOGOP(OP_AND, 0, first, trueop); | |
3154 | if (!trueop) | |
3155 | return newLOGOP(OP_OR, 0, first, falseop); | |
79072805 | 3156 | |
8990e307 | 3157 | scalarboolean(first); |
79072805 LW |
3158 | if (first->op_type == OP_CONST) { |
3159 | if (SvTRUE(((SVOP*)first)->op_sv)) { | |
3160 | op_free(first); | |
b1cb66bf | 3161 | op_free(falseop); |
3162 | return trueop; | |
79072805 LW |
3163 | } |
3164 | else { | |
3165 | op_free(first); | |
b1cb66bf | 3166 | op_free(trueop); |
3167 | return falseop; | |
79072805 LW |
3168 | } |
3169 | } | |
3170 | else if (first->op_type == OP_WANTARRAY) { | |
b1cb66bf | 3171 | list(trueop); |
3172 | scalar(falseop); | |
79072805 LW |
3173 | } |
3174 | Newz(1101, condop, 1, CONDOP); | |
3175 | ||
3176 | condop->op_type = OP_COND_EXPR; | |
22c35a8c | 3177 | condop->op_ppaddr = PL_ppaddr[OP_COND_EXPR]; |
79072805 LW |
3178 | condop->op_first = first; |
3179 | condop->op_flags = flags | OPf_KIDS; | |
b1cb66bf | 3180 | condop->op_true = LINKLIST(trueop); |
3181 | condop->op_false = LINKLIST(falseop); | |
c07a80fd | 3182 | condop->op_private = 1 | (flags >> 8); |
79072805 LW |
3183 | |
3184 | /* establish postfix order */ | |
3185 | condop->op_next = LINKLIST(first); | |
3186 | first->op_next = (OP*)condop; | |
3187 | ||
b1cb66bf | 3188 | first->op_sibling = trueop; |
3189 | trueop->op_sibling = falseop; | |
11343788 | 3190 | o = newUNOP(OP_NULL, 0, (OP*)condop); |
79072805 | 3191 | |
5dc0d613 MB |
3192 | trueop->op_next = o; |
3193 | falseop->op_next = o; | |
79072805 | 3194 | |
11343788 | 3195 | return o; |
79072805 LW |
3196 | } |
3197 | ||
3198 | OP * | |
8ac85365 | 3199 | newRANGE(I32 flags, OP *left, OP *right) |
79072805 | 3200 | { |
b35b2403 | 3201 | dTHR; |
79072805 LW |
3202 | CONDOP *condop; |
3203 | OP *flip; | |
3204 | OP *flop; | |
11343788 | 3205 | OP *o; |
79072805 LW |
3206 | |
3207 | Newz(1101, condop, 1, CONDOP); | |
3208 | ||
3209 | condop->op_type = OP_RANGE; | |
22c35a8c | 3210 | condop->op_ppaddr = PL_ppaddr[OP_RANGE]; |
79072805 LW |
3211 | condop->op_first = left; |
3212 | condop->op_flags = OPf_KIDS; | |
3213 | condop->op_true = LINKLIST(left); | |
3214 | condop->op_false = LINKLIST(right); | |
c07a80fd | 3215 | condop->op_private = 1 | (flags >> 8); |
79072805 LW |
3216 | |
3217 | left->op_sibling = right; | |
3218 | ||
3219 | condop->op_next = (OP*)condop; | |
3220 | flip = newUNOP(OP_FLIP, flags, (OP*)condop); | |
3221 | flop = newUNOP(OP_FLOP, 0, flip); | |
11343788 | 3222 | o = newUNOP(OP_NULL, 0, flop); |
79072805 LW |
3223 | linklist(flop); |
3224 | ||
3225 | left->op_next = flip; | |
3226 | right->op_next = flop; | |
3227 | ||
ed6116ce | 3228 | condop->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 | 3229 | sv_upgrade(PAD_SV(condop->op_targ), SVt_PVNV); |
ed6116ce | 3230 | flip->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 LW |
3231 | sv_upgrade(PAD_SV(flip->op_targ), SVt_PVNV); |
3232 | ||
3233 | flip->op_private = left->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
3234 | flop->op_private = right->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
3235 | ||
11343788 | 3236 | flip->op_next = o; |
79072805 | 3237 | if (!flip->op_private || !flop->op_private) |
11343788 | 3238 | linklist(o); /* blow off optimizer unless constant */ |
79072805 | 3239 | |
11343788 | 3240 | return o; |
79072805 LW |
3241 | } |
3242 | ||
3243 | OP * | |
8ac85365 | 3244 | newLOOPOP(I32 flags, I32 debuggable, OP *expr, OP *block) |
79072805 | 3245 | { |
11343788 | 3246 | dTHR; |
463ee0b2 | 3247 | OP* listop; |
11343788 | 3248 | OP* o; |
463ee0b2 | 3249 | int once = block && block->op_flags & OPf_SPECIAL && |
a0d0e21e | 3250 | (block->op_type == OP_ENTERSUB || block->op_type == OP_NULL); |
93a17b20 | 3251 | |
463ee0b2 LW |
3252 | if (expr) { |
3253 | if (once && expr->op_type == OP_CONST && !SvTRUE(((SVOP*)expr)->op_sv)) | |
3254 | return block; /* do {} while 0 does once */ | |
fb73857a | 3255 | if (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB |
3256 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB)) { | |
774d564b | 3257 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 3258 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 GS |
3259 | } else if (expr->op_flags & OPf_KIDS) { |
3260 | OP *k1 = ((UNOP*)expr)->op_first; | |
3261 | OP *k2 = (k1) ? k1->op_sibling : NULL; | |
3262 | switch (expr->op_type) { | |
3263 | case OP_NULL: | |
3264 | if (k2 && k2->op_type == OP_READLINE | |
3265 | && (k2->op_flags & OPf_STACKED) | |
3266 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) | |
3267 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3268 | break; | |
3269 | ||
3270 | case OP_SASSIGN: | |
3271 | if (k1->op_type == OP_READDIR | |
3272 | || k1->op_type == OP_GLOB | |
3273 | || k1->op_type == OP_EACH) | |
3274 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3275 | break; | |
3276 | } | |
774d564b | 3277 | } |
463ee0b2 | 3278 | } |
93a17b20 | 3279 | |
8990e307 | 3280 | listop = append_elem(OP_LINESEQ, block, newOP(OP_UNSTACK, 0)); |
883ffac3 | 3281 | o = new_logop(OP_AND, 0, &expr, &listop); |
463ee0b2 | 3282 | |
883ffac3 CS |
3283 | if (listop) |
3284 | ((LISTOP*)listop)->op_last->op_next = LINKLIST(o); | |
79072805 | 3285 | |
11343788 MB |
3286 | if (once && o != listop) |
3287 | o->op_next = ((LOGOP*)cUNOPo->op_first)->op_other; | |
79072805 | 3288 | |
11343788 MB |
3289 | if (o == listop) |
3290 | o = newUNOP(OP_NULL, 0, o); /* or do {} while 1 loses outer block */ | |
748a9306 | 3291 | |
11343788 MB |
3292 | o->op_flags |= flags; |
3293 | o = scope(o); | |
3294 | o->op_flags |= OPf_SPECIAL; /* suppress POPBLOCK curpm restoration*/ | |
3295 | return o; | |
79072805 LW |
3296 | } |
3297 | ||
3298 | OP * | |
8ac85365 | 3299 | newWHILEOP(I32 flags, I32 debuggable, LOOP *loop, I32 whileline, OP *expr, OP *block, OP *cont) |
79072805 | 3300 | { |
11343788 | 3301 | dTHR; |
79072805 LW |
3302 | OP *redo; |
3303 | OP *next = 0; | |
3304 | OP *listop; | |
11343788 | 3305 | OP *o; |
79072805 LW |
3306 | OP *condop; |
3307 | ||
fb73857a | 3308 | if (expr && (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB |
3309 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB))) { | |
748a9306 | 3310 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 3311 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 GS |
3312 | } else if (expr && (expr->op_flags & OPf_KIDS)) { |
3313 | OP *k1 = ((UNOP*)expr)->op_first; | |
3314 | OP *k2 = (k1) ? k1->op_sibling : NULL; | |
3315 | switch (expr->op_type) { | |
3316 | case OP_NULL: | |
3317 | if (k2 && k2->op_type == OP_READLINE | |
3318 | && (k2->op_flags & OPf_STACKED) | |
3319 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) | |
3320 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3321 | break; | |
3322 | ||
3323 | case OP_SASSIGN: | |
3324 | if (k1->op_type == OP_READDIR | |
3325 | || k1->op_type == OP_GLOB | |
3326 | || k1->op_type == OP_EACH) | |
3327 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3328 | break; | |
3329 | } | |
748a9306 | 3330 | } |
79072805 LW |
3331 | |
3332 | if (!block) | |
3333 | block = newOP(OP_NULL, 0); | |
3334 | ||
3335 | if (cont) | |
3336 | next = LINKLIST(cont); | |
fb73857a | 3337 | if (expr) { |
79072805 | 3338 | cont = append_elem(OP_LINESEQ, cont, newOP(OP_UNSTACK, 0)); |
fb73857a | 3339 | if ((line_t)whileline != NOLINE) { |
3280af22 | 3340 | PL_copline = whileline; |
fb73857a | 3341 | cont = append_elem(OP_LINESEQ, cont, |
3342 | newSTATEOP(0, Nullch, Nullop)); | |
3343 | } | |
3344 | } | |
79072805 | 3345 | |
463ee0b2 | 3346 | listop = append_list(OP_LINESEQ, (LISTOP*)block, (LISTOP*)cont); |
79072805 LW |
3347 | redo = LINKLIST(listop); |
3348 | ||
3349 | if (expr) { | |
3280af22 | 3350 | PL_copline = whileline; |
883ffac3 CS |
3351 | scalar(listop); |
3352 | o = new_logop(OP_AND, 0, &expr, &listop); | |
11343788 | 3353 | if (o == expr && o->op_type == OP_CONST && !SvTRUE(cSVOPo->op_sv)) { |
85e6fe83 | 3354 | op_free(expr); /* oops, it's a while (0) */ |
463ee0b2 | 3355 | op_free((OP*)loop); |
883ffac3 | 3356 | return Nullop; /* listop already freed by new_logop */ |
463ee0b2 | 3357 | } |
883ffac3 CS |
3358 | if (listop) |
3359 | ((LISTOP*)listop)->op_last->op_next = condop = | |
3360 | (o == listop ? redo : LINKLIST(o)); | |
79072805 LW |
3361 | if (!next) |
3362 | next = condop; | |
3363 | } | |
3364 | else | |
11343788 | 3365 | o = listop; |
79072805 LW |
3366 | |
3367 | if (!loop) { | |
3368 | Newz(1101,loop,1,LOOP); | |
3369 | loop->op_type = OP_ENTERLOOP; | |
22c35a8c | 3370 | loop->op_ppaddr = PL_ppaddr[OP_ENTERLOOP]; |
79072805 LW |
3371 | loop->op_private = 0; |
3372 | loop->op_next = (OP*)loop; | |
3373 | } | |
3374 | ||
11343788 | 3375 | o = newBINOP(OP_LEAVELOOP, 0, (OP*)loop, o); |
79072805 LW |
3376 | |
3377 | loop->op_redoop = redo; | |
11343788 | 3378 | loop->op_lastop = o; |
79072805 LW |
3379 | |
3380 | if (next) | |
3381 | loop->op_nextop = next; | |
3382 | else | |
11343788 | 3383 | loop->op_nextop = o; |
79072805 | 3384 | |
11343788 MB |
3385 | o->op_flags |= flags; |
3386 | o->op_private |= (flags >> 8); | |
3387 | return o; | |
79072805 LW |
3388 | } |
3389 | ||
3390 | OP * | |
8990e307 | 3391 | newFOROP(I32 flags,char *label,line_t forline,OP *sv,OP *expr,OP *block,OP *cont) |
79072805 LW |
3392 | { |
3393 | LOOP *loop; | |
fb73857a | 3394 | OP *wop; |
85e6fe83 | 3395 | int padoff = 0; |
4633a7c4 | 3396 | I32 iterflags = 0; |
79072805 | 3397 | |
79072805 | 3398 | if (sv) { |
85e6fe83 | 3399 | if (sv->op_type == OP_RV2SV) { /* symbol table variable */ |
748a9306 | 3400 | sv->op_type = OP_RV2GV; |
22c35a8c | 3401 | sv->op_ppaddr = PL_ppaddr[OP_RV2GV]; |
79072805 | 3402 | } |
85e6fe83 LW |
3403 | else if (sv->op_type == OP_PADSV) { /* private variable */ |
3404 | padoff = sv->op_targ; | |
3405 | op_free(sv); | |
3406 | sv = Nullop; | |
3407 | } | |
54b9620d MB |
3408 | else if (sv->op_type == OP_THREADSV) { /* per-thread variable */ |
3409 | padoff = sv->op_targ; | |
3410 | iterflags |= OPf_SPECIAL; | |
3411 | op_free(sv); | |
3412 | sv = Nullop; | |
3413 | } | |
79072805 | 3414 | else |
22c35a8c | 3415 | croak("Can't use %s for loop variable", PL_op_desc[sv->op_type]); |
79072805 LW |
3416 | } |
3417 | else { | |
54b9620d MB |
3418 | #ifdef USE_THREADS |
3419 | padoff = find_threadsv("_"); | |
3420 | iterflags |= OPf_SPECIAL; | |
3421 | #else | |
3280af22 | 3422 | sv = newGVOP(OP_GV, 0, PL_defgv); |
54b9620d | 3423 | #endif |
79072805 | 3424 | } |
5f05dabc | 3425 | if (expr->op_type == OP_RV2AV || expr->op_type == OP_PADAV) { |
89ea2908 | 3426 | expr = mod(force_list(scalar(ref(expr, OP_ITER))), OP_GREPSTART); |
4633a7c4 LW |
3427 | iterflags |= OPf_STACKED; |
3428 | } | |
89ea2908 GA |
3429 | else if (expr->op_type == OP_NULL && |
3430 | (expr->op_flags & OPf_KIDS) && | |
3431 | ((BINOP*)expr)->op_first->op_type == OP_FLOP) | |
3432 | { | |
3433 | /* Basically turn for($x..$y) into the same as for($x,$y), but we | |
3434 | * set the STACKED flag to indicate that these values are to be | |
3435 | * treated as min/max values by 'pp_iterinit'. | |
3436 | */ | |
3437 | UNOP* flip = (UNOP*)((UNOP*)((BINOP*)expr)->op_first)->op_first; | |
3438 | CONDOP* range = (CONDOP*) flip->op_first; | |
3439 | OP* left = range->op_first; | |
3440 | OP* right = left->op_sibling; | |
5152d7c7 | 3441 | LISTOP* listop; |
89ea2908 GA |
3442 | |
3443 | range->op_flags &= ~OPf_KIDS; | |
3444 | range->op_first = Nullop; | |
3445 | ||
5152d7c7 GS |
3446 | listop = (LISTOP*)newLISTOP(OP_LIST, 0, left, right); |
3447 | listop->op_first->op_next = range->op_true; | |
89ea2908 | 3448 | left->op_next = range->op_false; |
5152d7c7 GS |
3449 | right->op_next = (OP*)listop; |
3450 | listop->op_next = listop->op_first; | |
89ea2908 GA |
3451 | |
3452 | op_free(expr); | |
5152d7c7 | 3453 | expr = (OP*)(listop); |
89ea2908 GA |
3454 | null(expr); |
3455 | iterflags |= OPf_STACKED; | |
3456 | } | |
3457 | else { | |
3458 | expr = mod(force_list(expr), OP_GREPSTART); | |
3459 | } | |
3460 | ||
3461 | ||
4633a7c4 | 3462 | loop = (LOOP*)list(convert(OP_ENTERITER, iterflags, |
89ea2908 | 3463 | append_elem(OP_LIST, expr, scalar(sv)))); |
85e6fe83 LW |
3464 | assert(!loop->op_next); |
3465 | Renew(loop, 1, LOOP); | |
3466 | loop->op_targ = padoff; | |
fb73857a | 3467 | wop = newWHILEOP(flags, 1, loop, forline, newOP(OP_ITER, 0), block, cont); |
3280af22 | 3468 | PL_copline = forline; |
fb73857a | 3469 | return newSTATEOP(0, label, wop); |
79072805 LW |
3470 | } |
3471 | ||
8990e307 | 3472 | OP* |
8ac85365 | 3473 | newLOOPEX(I32 type, OP *label) |
8990e307 | 3474 | { |
11343788 MB |
3475 | dTHR; |
3476 | OP *o; | |
2d8e6c8d GS |
3477 | STRLEN n_a; |
3478 | ||
8990e307 | 3479 | if (type != OP_GOTO || label->op_type == OP_CONST) { |
cdaebead MB |
3480 | /* "last()" means "last" */ |
3481 | if (label->op_type == OP_STUB && (label->op_flags & OPf_PARENS)) | |
3482 | o = newOP(type, OPf_SPECIAL); | |
3483 | else { | |
3484 | o = newPVOP(type, 0, savepv(label->op_type == OP_CONST | |
2d8e6c8d | 3485 | ? SvPVx(((SVOP*)label)->op_sv, n_a) |
cdaebead MB |
3486 | : "")); |
3487 | } | |
8990e307 LW |
3488 | op_free(label); |
3489 | } | |
3490 | else { | |
a0d0e21e LW |
3491 | if (label->op_type == OP_ENTERSUB) |
3492 | label = newUNOP(OP_REFGEN, 0, mod(label, OP_REFGEN)); | |
11343788 | 3493 | o = newUNOP(type, OPf_STACKED, label); |
8990e307 | 3494 | } |
3280af22 | 3495 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 3496 | return o; |
8990e307 LW |
3497 | } |
3498 | ||
79072805 | 3499 | void |
8ac85365 | 3500 | cv_undef(CV *cv) |
79072805 | 3501 | { |
11343788 MB |
3502 | dTHR; |
3503 | #ifdef USE_THREADS | |
e858de61 MB |
3504 | if (CvMUTEXP(cv)) { |
3505 | MUTEX_DESTROY(CvMUTEXP(cv)); | |
3506 | Safefree(CvMUTEXP(cv)); | |
3507 | CvMUTEXP(cv) = 0; | |
3508 | } | |
11343788 MB |
3509 | #endif /* USE_THREADS */ |
3510 | ||
a0d0e21e | 3511 | if (!CvXSUB(cv) && CvROOT(cv)) { |
11343788 MB |
3512 | #ifdef USE_THREADS |
3513 | if (CvDEPTH(cv) || (CvOWNER(cv) && CvOWNER(cv) != thr)) | |
3514 | croak("Can't undef active subroutine"); | |
3515 | #else | |
a0d0e21e LW |
3516 | if (CvDEPTH(cv)) |
3517 | croak("Can't undef active subroutine"); | |
11343788 | 3518 | #endif /* USE_THREADS */ |
8990e307 | 3519 | ENTER; |
a0d0e21e | 3520 | |
3280af22 NIS |
3521 | SAVESPTR(PL_curpad); |
3522 | PL_curpad = 0; | |
a0d0e21e | 3523 | |
a5f75d66 | 3524 | if (!CvCLONED(cv)) |
748a9306 | 3525 | op_free(CvROOT(cv)); |
79072805 | 3526 | CvROOT(cv) = Nullop; |
8990e307 | 3527 | LEAVE; |
79072805 | 3528 | } |
1d5db326 | 3529 | SvPOK_off((SV*)cv); /* forget prototype */ |
44a8e56a | 3530 | CvFLAGS(cv) = 0; |
8e07c86e AD |
3531 | SvREFCNT_dec(CvGV(cv)); |
3532 | CvGV(cv) = Nullgv; | |
3533 | SvREFCNT_dec(CvOUTSIDE(cv)); | |
3534 | CvOUTSIDE(cv) = Nullcv; | |
3535 | if (CvPADLIST(cv)) { | |
8ebc5c01 | 3536 | /* may be during global destruction */ |
3537 | if (SvREFCNT(CvPADLIST(cv))) { | |