Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* op.c |
79072805 | 2 | * |
4eb8286e | 3 | * Copyright (c) 1991-1999, Larry Wall |
79072805 LW |
4 | * |
5 | * You may distribute under the terms of either the GNU General Public | |
6 | * License or the Artistic License, as specified in the README file. | |
7 | * | |
a0d0e21e LW |
8 | */ |
9 | ||
10 | /* | |
11 | * "You see: Mr. Drogo, he married poor Miss Primula Brandybuck. She was | |
12 | * our Mr. Bilbo's first cousin on the mother's side (her mother being the | |
13 | * youngest of the Old Took's daughters); and Mr. Drogo was his second | |
14 | * cousin. So Mr. Frodo is his first *and* second cousin, once removed | |
15 | * either way, as the saying is, if you follow me." --the Gaffer | |
79072805 LW |
16 | */ |
17 | ||
18 | #include "EXTERN.h" | |
864dbfa3 | 19 | #define PERL_IN_OP_C |
79072805 LW |
20 | #include "perl.h" |
21 | ||
76e3520e | 22 | #ifdef PERL_OBJECT |
22c35a8c | 23 | #define CHECKCALL this->*PL_check |
76e3520e | 24 | #else |
22c35a8c | 25 | #define CHECKCALL *PL_check |
b7dc083c NIS |
26 | #endif |
27 | ||
28 | /* #define PL_OP_SLAB_ALLOC */ | |
29 | ||
30 | #ifdef PL_OP_SLAB_ALLOC | |
31 | #define SLAB_SIZE 8192 | |
32 | static char *PL_OpPtr = NULL; | |
33 | static int PL_OpSpace = 0; | |
34 | #define NewOp(m,var,c,type) do { if ((PL_OpSpace -= c*sizeof(type)) >= 0) \ | |
35 | var = (type *)(PL_OpPtr -= c*sizeof(type)); \ | |
36 | else \ | |
37 | var = (type *) Slab_Alloc(m,c*sizeof(type)); \ | |
38 | } while (0) | |
39 | ||
864dbfa3 | 40 | STATIC void * |
cea2e8a9 | 41 | S_Slab_Alloc(pTHX_ int m, size_t sz) |
b7dc083c NIS |
42 | { |
43 | Newz(m,PL_OpPtr,SLAB_SIZE,char); | |
44 | PL_OpSpace = SLAB_SIZE - sz; | |
45 | return PL_OpPtr += PL_OpSpace; | |
46 | } | |
76e3520e | 47 | |
b7dc083c NIS |
48 | #else |
49 | #define NewOp(m, var, c, type) Newz(m, var, c, type) | |
50 | #endif | |
e50aee73 | 51 | /* |
5dc0d613 | 52 | * In the following definition, the ", Nullop" is just to make the compiler |
a5f75d66 | 53 | * think the expression is of the right type: croak actually does a Siglongjmp. |
e50aee73 | 54 | */ |
11343788 | 55 | #define CHECKOP(type,o) \ |
3280af22 | 56 | ((PL_op_mask && PL_op_mask[type]) \ |
5dc0d613 | 57 | ? ( op_free((OP*)o), \ |
cea2e8a9 | 58 | Perl_croak(aTHX_ "%s trapped by operation mask", PL_op_desc[type]), \ |
28757baa | 59 | Nullop ) \ |
cea2e8a9 | 60 | : (CHECKCALL[type])(aTHX_ (OP*)o)) |
e50aee73 | 61 | |
c53d7c7d HS |
62 | #define PAD_MAX 999999999 |
63 | ||
76e3520e | 64 | STATIC char* |
cea2e8a9 | 65 | S_gv_ename(pTHX_ GV *gv) |
4633a7c4 | 66 | { |
2d8e6c8d | 67 | STRLEN n_a; |
4633a7c4 | 68 | SV* tmpsv = sv_newmortal(); |
46fc3d4c | 69 | gv_efullname3(tmpsv, gv, Nullch); |
2d8e6c8d | 70 | return SvPV(tmpsv,n_a); |
4633a7c4 LW |
71 | } |
72 | ||
76e3520e | 73 | STATIC OP * |
cea2e8a9 | 74 | S_no_fh_allowed(pTHX_ OP *o) |
79072805 | 75 | { |
cea2e8a9 | 76 | yyerror(Perl_form(aTHX_ "Missing comma after first argument to %s function", |
22c35a8c | 77 | PL_op_desc[o->op_type])); |
11343788 | 78 | return o; |
79072805 LW |
79 | } |
80 | ||
76e3520e | 81 | STATIC OP * |
cea2e8a9 | 82 | S_too_few_arguments(pTHX_ OP *o, char *name) |
79072805 | 83 | { |
cea2e8a9 | 84 | yyerror(Perl_form(aTHX_ "Not enough arguments for %s", name)); |
11343788 | 85 | return o; |
79072805 LW |
86 | } |
87 | ||
76e3520e | 88 | STATIC OP * |
cea2e8a9 | 89 | S_too_many_arguments(pTHX_ OP *o, char *name) |
79072805 | 90 | { |
cea2e8a9 | 91 | yyerror(Perl_form(aTHX_ "Too many arguments for %s", name)); |
11343788 | 92 | return o; |
79072805 LW |
93 | } |
94 | ||
76e3520e | 95 | STATIC void |
cea2e8a9 | 96 | S_bad_type(pTHX_ I32 n, char *t, char *name, OP *kid) |
8990e307 | 97 | { |
cea2e8a9 | 98 | yyerror(Perl_form(aTHX_ "Type of arg %d to %s must be %s (not %s)", |
22c35a8c | 99 | (int)n, name, t, PL_op_desc[kid->op_type])); |
8990e307 LW |
100 | } |
101 | ||
7a52d87a | 102 | STATIC void |
cea2e8a9 | 103 | S_no_bareword_allowed(pTHX_ OP *o) |
7a52d87a | 104 | { |
cea2e8a9 | 105 | Perl_warn(aTHX_ "Bareword \"%s\" not allowed while \"strict subs\" in use", |
7a52d87a GS |
106 | SvPV_nolen(cSVOPo->op_sv)); |
107 | ++PL_error_count; | |
108 | } | |
109 | ||
a0d0e21e | 110 | void |
864dbfa3 | 111 | Perl_assertref(pTHX_ OP *o) |
a0d0e21e | 112 | { |
11343788 | 113 | int type = o->op_type; |
136254bc | 114 | if (type != OP_AELEM && type != OP_HELEM && type != OP_GELEM) { |
cea2e8a9 | 115 | yyerror(Perl_form(aTHX_ "Can't use subscript on %s", PL_op_desc[type])); |
bde90e66 | 116 | if (type == OP_ENTERSUB || type == OP_RV2HV || type == OP_PADHV) { |
9c82454c | 117 | dTHR; |
bde90e66 | 118 | SV *msg = sv_2mortal( |
cea2e8a9 | 119 | Perl_newSVpvf(aTHX_ "(Did you mean $ or @ instead of %c?)\n", |
bde90e66 | 120 | type == OP_ENTERSUB ? '&' : '%')); |
faef0170 | 121 | if (PL_in_eval & EVAL_WARNONLY) |
cea2e8a9 | 122 | Perl_warn(aTHX_ "%_", msg); |
3280af22 NIS |
123 | else if (PL_in_eval) |
124 | sv_catsv(GvSV(PL_errgv), msg); | |
bde90e66 HS |
125 | else |
126 | PerlIO_write(PerlIO_stderr(), SvPVX(msg), SvCUR(msg)); | |
127 | } | |
a0d0e21e LW |
128 | } |
129 | } | |
130 | ||
79072805 LW |
131 | /* "register" allocation */ |
132 | ||
133 | PADOFFSET | |
864dbfa3 | 134 | Perl_pad_allocmy(pTHX_ char *name) |
93a17b20 | 135 | { |
11343788 | 136 | dTHR; |
a0d0e21e LW |
137 | PADOFFSET off; |
138 | SV *sv; | |
139 | ||
834a4ddd LW |
140 | if (!( |
141 | isALPHA(name[1]) || | |
142 | (PL_hints & HINT_UTF8 && (name[1] & 0xc0) == 0xc0) || | |
143 | name[1] == '_' && (int)strlen(name) > 2)) | |
144 | { | |
46fc3d4c | 145 | if (!isPRINT(name[1])) { |
2b92dfce GS |
146 | /* 1999-02-27 mjd@plover.com */ |
147 | char *p; | |
148 | p = strchr(name, '\0'); | |
149 | /* The next block assumes the buffer is at least 205 chars | |
150 | long. At present, it's always at least 256 chars. */ | |
151 | if (p-name > 200) { | |
152 | strcpy(name+200, "..."); | |
153 | p = name+199; | |
154 | } | |
155 | else { | |
156 | p[1] = '\0'; | |
157 | } | |
158 | /* Move everything else down one character */ | |
159 | for (; p-name > 2; p--) | |
160 | *p = *(p-1); | |
46fc3d4c | 161 | name[2] = toCTRL(name[1]); |
162 | name[1] = '^'; | |
163 | } | |
cea2e8a9 | 164 | yyerror(Perl_form(aTHX_ "Can't use global %s in \"my\"",name)); |
a0d0e21e | 165 | } |
599cee73 | 166 | if (ckWARN(WARN_UNSAFE) && AvFILLp(PL_comppad_name) >= 0) { |
3280af22 NIS |
167 | SV **svp = AvARRAY(PL_comppad_name); |
168 | for (off = AvFILLp(PL_comppad_name); off > PL_comppad_name_floor; off--) { | |
b1cb66bf | 169 | if ((sv = svp[off]) |
3280af22 | 170 | && sv != &PL_sv_undef |
c53d7c7d | 171 | && (SvIVX(sv) == PAD_MAX || SvIVX(sv) == 0) |
b1cb66bf | 172 | && strEQ(name, SvPVX(sv))) |
173 | { | |
cea2e8a9 | 174 | Perl_warner(aTHX_ WARN_UNSAFE, |
9fbbe825 | 175 | "\"my\" variable %s masks earlier declaration in same %s", |
c53d7c7d | 176 | name, (SvIVX(sv) == PAD_MAX ? "scope" : "statement")); |
b1cb66bf | 177 | break; |
178 | } | |
179 | } | |
180 | } | |
a0d0e21e LW |
181 | off = pad_alloc(OP_PADSV, SVs_PADMY); |
182 | sv = NEWSV(1102,0); | |
93a17b20 LW |
183 | sv_upgrade(sv, SVt_PVNV); |
184 | sv_setpv(sv, name); | |
3280af22 | 185 | if (PL_in_my_stash) { |
c750a3ec | 186 | if (*name != '$') |
cea2e8a9 | 187 | yyerror(Perl_form(aTHX_ "Can't declare class for non-scalar %s in \"my\"", |
dce40276 | 188 | name)); |
c750a3ec MB |
189 | SvOBJECT_on(sv); |
190 | (void)SvUPGRADE(sv, SVt_PVMG); | |
3280af22 NIS |
191 | SvSTASH(sv) = (HV*)SvREFCNT_inc(PL_in_my_stash); |
192 | PL_sv_objcount++; | |
c750a3ec | 193 | } |
3280af22 | 194 | av_store(PL_comppad_name, off, sv); |
c53d7c7d | 195 | SvNVX(sv) = (double)PAD_MAX; |
8990e307 | 196 | SvIVX(sv) = 0; /* Not yet introduced--see newSTATEOP */ |
3280af22 NIS |
197 | if (!PL_min_intro_pending) |
198 | PL_min_intro_pending = off; | |
199 | PL_max_intro_pending = off; | |
93a17b20 | 200 | if (*name == '@') |
3280af22 | 201 | av_store(PL_comppad, off, (SV*)newAV()); |
93a17b20 | 202 | else if (*name == '%') |
3280af22 NIS |
203 | av_store(PL_comppad, off, (SV*)newHV()); |
204 | SvPADMY_on(PL_curpad[off]); | |
93a17b20 LW |
205 | return off; |
206 | } | |
207 | ||
2680586e GS |
208 | #define FINDLEX_NOSEARCH 1 /* don't search outer contexts */ |
209 | ||
76e3520e | 210 | STATIC PADOFFSET |
cea2e8a9 | 211 | S_pad_findlex(pTHX_ char *name, PADOFFSET newoff, U32 seq, CV* startcv, |
864dbfa3 | 212 | I32 cx_ix, I32 saweval, U32 flags) |
93a17b20 | 213 | { |
11343788 | 214 | dTHR; |
748a9306 | 215 | CV *cv; |
93a17b20 LW |
216 | I32 off; |
217 | SV *sv; | |
93a17b20 | 218 | register I32 i; |
c09156bb | 219 | register PERL_CONTEXT *cx; |
93a17b20 | 220 | |
748a9306 | 221 | for (cv = startcv; cv; cv = CvOUTSIDE(cv)) { |
4fdae800 | 222 | AV *curlist = CvPADLIST(cv); |
223 | SV **svp = av_fetch(curlist, 0, FALSE); | |
748a9306 | 224 | AV *curname; |
4fdae800 | 225 | |
3280af22 | 226 | if (!svp || *svp == &PL_sv_undef) |
4633a7c4 | 227 | continue; |
748a9306 LW |
228 | curname = (AV*)*svp; |
229 | svp = AvARRAY(curname); | |
93965878 | 230 | for (off = AvFILLp(curname); off > 0; off--) { |
748a9306 | 231 | if ((sv = svp[off]) && |
3280af22 | 232 | sv != &PL_sv_undef && |
748a9306 | 233 | seq <= SvIVX(sv) && |
13826f2c | 234 | seq > I_32(SvNVX(sv)) && |
748a9306 LW |
235 | strEQ(SvPVX(sv), name)) |
236 | { | |
5f05dabc | 237 | I32 depth; |
238 | AV *oldpad; | |
239 | SV *oldsv; | |
240 | ||
241 | depth = CvDEPTH(cv); | |
242 | if (!depth) { | |
9607fc9c | 243 | if (newoff) { |
244 | if (SvFAKE(sv)) | |
245 | continue; | |
4fdae800 | 246 | return 0; /* don't clone from inactive stack frame */ |
9607fc9c | 247 | } |
5f05dabc | 248 | depth = 1; |
249 | } | |
250 | oldpad = (AV*)*av_fetch(curlist, depth, FALSE); | |
251 | oldsv = *av_fetch(oldpad, off, TRUE); | |
748a9306 | 252 | if (!newoff) { /* Not a mere clone operation. */ |
9607fc9c | 253 | SV *namesv = NEWSV(1103,0); |
748a9306 | 254 | newoff = pad_alloc(OP_PADSV, SVs_PADMY); |
9607fc9c | 255 | sv_upgrade(namesv, SVt_PVNV); |
256 | sv_setpv(namesv, name); | |
3280af22 NIS |
257 | av_store(PL_comppad_name, newoff, namesv); |
258 | SvNVX(namesv) = (double)PL_curcop->cop_seq; | |
c53d7c7d | 259 | SvIVX(namesv) = PAD_MAX; /* A ref, intro immediately */ |
9607fc9c | 260 | SvFAKE_on(namesv); /* A ref, not a real var */ |
87671ffc | 261 | if (SvOBJECT(sv)) { /* A typed var */ |
3d93dc8b GS |
262 | SvOBJECT_on(namesv); |
263 | (void)SvUPGRADE(namesv, SVt_PVMG); | |
87671ffc | 264 | SvSTASH(namesv) = (HV*)SvREFCNT_inc((SV*)SvSTASH(sv)); |
3d93dc8b GS |
265 | PL_sv_objcount++; |
266 | } | |
3280af22 | 267 | if (CvANON(PL_compcv) || SvTYPE(PL_compcv) == SVt_PVFM) { |
28757baa | 268 | /* "It's closures all the way down." */ |
3280af22 | 269 | CvCLONE_on(PL_compcv); |
54310121 | 270 | if (cv == startcv) { |
3280af22 | 271 | if (CvANON(PL_compcv)) |
54310121 | 272 | oldsv = Nullsv; /* no need to keep ref */ |
273 | } | |
274 | else { | |
28757baa | 275 | CV *bcv; |
276 | for (bcv = startcv; | |
277 | bcv && bcv != cv && !CvCLONE(bcv); | |
6b35e009 GS |
278 | bcv = CvOUTSIDE(bcv)) |
279 | { | |
28757baa | 280 | if (CvANON(bcv)) |
281 | CvCLONE_on(bcv); | |
282 | else { | |
6b35e009 GS |
283 | if (ckWARN(WARN_CLOSURE) |
284 | && !CvUNIQUE(bcv) && !CvUNIQUE(cv)) | |
285 | { | |
cea2e8a9 | 286 | Perl_warner(aTHX_ WARN_CLOSURE, |
44a8e56a | 287 | "Variable \"%s\" may be unavailable", |
28757baa | 288 | name); |
6b35e009 | 289 | } |
28757baa | 290 | break; |
291 | } | |
292 | } | |
293 | } | |
294 | } | |
3280af22 | 295 | else if (!CvUNIQUE(PL_compcv)) { |
599cee73 | 296 | if (ckWARN(WARN_CLOSURE) && !SvFAKE(sv) && !CvUNIQUE(cv)) |
cea2e8a9 | 297 | Perl_warner(aTHX_ WARN_CLOSURE, |
599cee73 | 298 | "Variable \"%s\" will not stay shared", name); |
5f05dabc | 299 | } |
748a9306 | 300 | } |
3280af22 | 301 | av_store(PL_comppad, newoff, SvREFCNT_inc(oldsv)); |
748a9306 LW |
302 | return newoff; |
303 | } | |
93a17b20 LW |
304 | } |
305 | } | |
306 | ||
2680586e GS |
307 | if (flags & FINDLEX_NOSEARCH) |
308 | return 0; | |
309 | ||
93a17b20 LW |
310 | /* Nothing in current lexical context--try eval's context, if any. |
311 | * This is necessary to let the perldb get at lexically scoped variables. | |
312 | * XXX This will also probably interact badly with eval tree caching. | |
313 | */ | |
314 | ||
748a9306 | 315 | for (i = cx_ix; i >= 0; i--) { |
93a17b20 | 316 | cx = &cxstack[i]; |
6b35e009 | 317 | switch (CxTYPE(cx)) { |
93a17b20 | 318 | default: |
748a9306 LW |
319 | if (i == 0 && saweval) { |
320 | seq = cxstack[saweval].blk_oldcop->cop_seq; | |
2680586e | 321 | return pad_findlex(name, newoff, seq, PL_main_cv, -1, saweval, 0); |
748a9306 | 322 | } |
93a17b20 LW |
323 | break; |
324 | case CXt_EVAL: | |
44a8e56a | 325 | switch (cx->blk_eval.old_op_type) { |
326 | case OP_ENTEREVAL: | |
6b35e009 GS |
327 | if (CxREALEVAL(cx)) |
328 | saweval = i; | |
44a8e56a | 329 | break; |
330 | case OP_REQUIRE: | |
331 | /* require must have its own scope */ | |
332 | return 0; | |
333 | } | |
93a17b20 LW |
334 | break; |
335 | case CXt_SUB: | |
336 | if (!saweval) | |
337 | return 0; | |
338 | cv = cx->blk_sub.cv; | |
3280af22 | 339 | if (PL_debstash && CvSTASH(cv) == PL_debstash) { /* ignore DB'* scope */ |
748a9306 | 340 | saweval = i; /* so we know where we were called from */ |
93a17b20 | 341 | continue; |
93a17b20 | 342 | } |
748a9306 | 343 | seq = cxstack[saweval].blk_oldcop->cop_seq; |
2680586e | 344 | return pad_findlex(name, newoff, seq, cv, i-1, saweval,FINDLEX_NOSEARCH); |
93a17b20 LW |
345 | } |
346 | } | |
347 | ||
748a9306 LW |
348 | return 0; |
349 | } | |
a0d0e21e | 350 | |
748a9306 | 351 | PADOFFSET |
864dbfa3 | 352 | Perl_pad_findmy(pTHX_ char *name) |
748a9306 | 353 | { |
11343788 | 354 | dTHR; |
748a9306 | 355 | I32 off; |
54310121 | 356 | I32 pendoff = 0; |
748a9306 | 357 | SV *sv; |
3280af22 NIS |
358 | SV **svp = AvARRAY(PL_comppad_name); |
359 | U32 seq = PL_cop_seqmax; | |
6b35e009 | 360 | PERL_CONTEXT *cx; |
33b8ce05 | 361 | CV *outside; |
748a9306 | 362 | |
11343788 MB |
363 | #ifdef USE_THREADS |
364 | /* | |
365 | * Special case to get lexical (and hence per-thread) @_. | |
366 | * XXX I need to find out how to tell at parse-time whether use | |
367 | * of @_ should refer to a lexical (from a sub) or defgv (global | |
368 | * scope and maybe weird sub-ish things like formats). See | |
369 | * startsub in perly.y. It's possible that @_ could be lexical | |
370 | * (at least from subs) even in non-threaded perl. | |
371 | */ | |
372 | if (strEQ(name, "@_")) | |
373 | return 0; /* success. (NOT_IN_PAD indicates failure) */ | |
374 | #endif /* USE_THREADS */ | |
375 | ||
748a9306 | 376 | /* The one we're looking for is probably just before comppad_name_fill. */ |
3280af22 | 377 | for (off = AvFILLp(PL_comppad_name); off > 0; off--) { |
a0d0e21e | 378 | if ((sv = svp[off]) && |
3280af22 | 379 | sv != &PL_sv_undef && |
54310121 | 380 | (!SvIVX(sv) || |
381 | (seq <= SvIVX(sv) && | |
382 | seq > I_32(SvNVX(sv)))) && | |
a0d0e21e LW |
383 | strEQ(SvPVX(sv), name)) |
384 | { | |
54310121 | 385 | if (SvIVX(sv)) |
386 | return (PADOFFSET)off; | |
387 | pendoff = off; /* this pending def. will override import */ | |
a0d0e21e LW |
388 | } |
389 | } | |
748a9306 | 390 | |
33b8ce05 GS |
391 | outside = CvOUTSIDE(PL_compcv); |
392 | ||
393 | /* Check if if we're compiling an eval'', and adjust seq to be the | |
394 | * eval's seq number. This depends on eval'' having a non-null | |
395 | * CvOUTSIDE() while it is being compiled. The eval'' itself is | |
1aff0e91 GS |
396 | * identified by CvEVAL being true and CvGV being null. */ |
397 | if (outside && CvEVAL(PL_compcv) && !CvGV(PL_compcv) && cxstack_ix >= 0) { | |
6b35e009 GS |
398 | cx = &cxstack[cxstack_ix]; |
399 | if (CxREALEVAL(cx)) | |
400 | seq = cx->blk_oldcop->cop_seq; | |
401 | } | |
402 | ||
748a9306 | 403 | /* See if it's in a nested scope */ |
2680586e | 404 | off = pad_findlex(name, 0, seq, outside, cxstack_ix, 0, 0); |
54310121 | 405 | if (off) { |
406 | /* If there is a pending local definition, this new alias must die */ | |
407 | if (pendoff) | |
3280af22 | 408 | SvIVX(AvARRAY(PL_comppad_name)[off]) = seq; |
11343788 | 409 | return off; /* pad_findlex returns 0 for failure...*/ |
54310121 | 410 | } |
11343788 | 411 | return NOT_IN_PAD; /* ...but we return NOT_IN_PAD for failure */ |
93a17b20 LW |
412 | } |
413 | ||
414 | void | |
864dbfa3 | 415 | Perl_pad_leavemy(pTHX_ I32 fill) |
93a17b20 LW |
416 | { |
417 | I32 off; | |
3280af22 | 418 | SV **svp = AvARRAY(PL_comppad_name); |
93a17b20 | 419 | SV *sv; |
3280af22 NIS |
420 | if (PL_min_intro_pending && fill < PL_min_intro_pending) { |
421 | for (off = PL_max_intro_pending; off >= PL_min_intro_pending; off--) { | |
422 | if ((sv = svp[off]) && sv != &PL_sv_undef) | |
cea2e8a9 | 423 | Perl_warn(aTHX_ "%s never introduced", SvPVX(sv)); |
8990e307 LW |
424 | } |
425 | } | |
426 | /* "Deintroduce" my variables that are leaving with this scope. */ | |
3280af22 | 427 | for (off = AvFILLp(PL_comppad_name); off > fill; off--) { |
c53d7c7d | 428 | if ((sv = svp[off]) && sv != &PL_sv_undef && SvIVX(sv) == PAD_MAX) |
3280af22 | 429 | SvIVX(sv) = PL_cop_seqmax; |
93a17b20 LW |
430 | } |
431 | } | |
432 | ||
433 | PADOFFSET | |
864dbfa3 | 434 | Perl_pad_alloc(pTHX_ I32 optype, U32 tmptype) |
79072805 | 435 | { |
11343788 | 436 | dTHR; |
79072805 LW |
437 | SV *sv; |
438 | I32 retval; | |
439 | ||
3280af22 | 440 | if (AvARRAY(PL_comppad) != PL_curpad) |
cea2e8a9 | 441 | Perl_croak(aTHX_ "panic: pad_alloc"); |
3280af22 | 442 | if (PL_pad_reset_pending) |
a0d0e21e | 443 | pad_reset(); |
ed6116ce | 444 | if (tmptype & SVs_PADMY) { |
79072805 | 445 | do { |
3280af22 | 446 | sv = *av_fetch(PL_comppad, AvFILLp(PL_comppad) + 1, TRUE); |
ed6116ce | 447 | } while (SvPADBUSY(sv)); /* need a fresh one */ |
3280af22 | 448 | retval = AvFILLp(PL_comppad); |
79072805 LW |
449 | } |
450 | else { | |
3280af22 NIS |
451 | SV **names = AvARRAY(PL_comppad_name); |
452 | SSize_t names_fill = AvFILLp(PL_comppad_name); | |
bbce6d69 | 453 | for (;;) { |
454 | /* | |
455 | * "foreach" index vars temporarily become aliases to non-"my" | |
456 | * values. Thus we must skip, not just pad values that are | |
457 | * marked as current pad values, but also those with names. | |
458 | */ | |
3280af22 NIS |
459 | if (++PL_padix <= names_fill && |
460 | (sv = names[PL_padix]) && sv != &PL_sv_undef) | |
bbce6d69 | 461 | continue; |
3280af22 | 462 | sv = *av_fetch(PL_comppad, PL_padix, TRUE); |
bbce6d69 | 463 | if (!(SvFLAGS(sv) & (SVs_PADTMP|SVs_PADMY))) |
464 | break; | |
465 | } | |
3280af22 | 466 | retval = PL_padix; |
79072805 | 467 | } |
8990e307 | 468 | SvFLAGS(sv) |= tmptype; |
3280af22 | 469 | PL_curpad = AvARRAY(PL_comppad); |
11343788 | 470 | #ifdef USE_THREADS |
5dc0d613 | 471 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx alloc %ld for %s\n", |
533c011a | 472 | (unsigned long) thr, (unsigned long) PL_curpad, |
22c35a8c | 473 | (long) retval, PL_op_name[optype])); |
11343788 | 474 | #else |
d9bb4600 | 475 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx alloc %ld for %s\n", |
3280af22 | 476 | (unsigned long) PL_curpad, |
22c35a8c | 477 | (long) retval, PL_op_name[optype])); |
11343788 | 478 | #endif /* USE_THREADS */ |
79072805 LW |
479 | return (PADOFFSET)retval; |
480 | } | |
481 | ||
482 | SV * | |
864dbfa3 | 483 | Perl_pad_sv(pTHX_ PADOFFSET po) |
79072805 | 484 | { |
11343788 MB |
485 | dTHR; |
486 | #ifdef USE_THREADS | |
5dc0d613 | 487 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx sv %d\n", |
533c011a | 488 | (unsigned long) thr, (unsigned long) PL_curpad, po)); |
11343788 | 489 | #else |
79072805 | 490 | if (!po) |
cea2e8a9 | 491 | Perl_croak(aTHX_ "panic: pad_sv po"); |
d9bb4600 | 492 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx sv %d\n", |
3280af22 | 493 | (unsigned long) PL_curpad, po)); |
11343788 | 494 | #endif /* USE_THREADS */ |
3280af22 | 495 | return PL_curpad[po]; /* eventually we'll turn this into a macro */ |
79072805 LW |
496 | } |
497 | ||
498 | void | |
864dbfa3 | 499 | Perl_pad_free(pTHX_ PADOFFSET po) |
79072805 | 500 | { |
11343788 | 501 | dTHR; |
3280af22 | 502 | if (!PL_curpad) |
a0d0e21e | 503 | return; |
3280af22 | 504 | if (AvARRAY(PL_comppad) != PL_curpad) |
cea2e8a9 | 505 | Perl_croak(aTHX_ "panic: pad_free curpad"); |
79072805 | 506 | if (!po) |
cea2e8a9 | 507 | Perl_croak(aTHX_ "panic: pad_free po"); |
11343788 | 508 | #ifdef USE_THREADS |
5dc0d613 | 509 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx free %d\n", |
533c011a | 510 | (unsigned long) thr, (unsigned long) PL_curpad, po)); |
11343788 | 511 | #else |
d9bb4600 | 512 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx free %d\n", |
3280af22 | 513 | (unsigned long) PL_curpad, po)); |
11343788 | 514 | #endif /* USE_THREADS */ |
3280af22 NIS |
515 | if (PL_curpad[po] && PL_curpad[po] != &PL_sv_undef) |
516 | SvPADTMP_off(PL_curpad[po]); | |
517 | if ((I32)po < PL_padix) | |
518 | PL_padix = po - 1; | |
79072805 LW |
519 | } |
520 | ||
521 | void | |
864dbfa3 | 522 | Perl_pad_swipe(pTHX_ PADOFFSET po) |
79072805 | 523 | { |
11343788 | 524 | dTHR; |
3280af22 | 525 | if (AvARRAY(PL_comppad) != PL_curpad) |
cea2e8a9 | 526 | Perl_croak(aTHX_ "panic: pad_swipe curpad"); |
79072805 | 527 | if (!po) |
cea2e8a9 | 528 | Perl_croak(aTHX_ "panic: pad_swipe po"); |
11343788 | 529 | #ifdef USE_THREADS |
5dc0d613 | 530 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx swipe %d\n", |
533c011a | 531 | (unsigned long) thr, (unsigned long) PL_curpad, po)); |
11343788 | 532 | #else |
d9bb4600 | 533 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx swipe %d\n", |
3280af22 | 534 | (unsigned long) PL_curpad, po)); |
11343788 | 535 | #endif /* USE_THREADS */ |
3280af22 NIS |
536 | SvPADTMP_off(PL_curpad[po]); |
537 | PL_curpad[po] = NEWSV(1107,0); | |
538 | SvPADTMP_on(PL_curpad[po]); | |
539 | if ((I32)po < PL_padix) | |
540 | PL_padix = po - 1; | |
79072805 LW |
541 | } |
542 | ||
d9bb4600 GS |
543 | /* XXX pad_reset() is currently disabled because it results in serious bugs. |
544 | * It causes pad temp TARGs to be shared between OPs. Since TARGs are pushed | |
545 | * on the stack by OPs that use them, there are several ways to get an alias | |
546 | * to a shared TARG. Such an alias will change randomly and unpredictably. | |
547 | * We avoid doing this until we can think of a Better Way. | |
548 | * GSAR 97-10-29 */ | |
79072805 | 549 | void |
864dbfa3 | 550 | Perl_pad_reset(pTHX) |
79072805 | 551 | { |
d9bb4600 | 552 | #ifdef USE_BROKEN_PAD_RESET |
11343788 | 553 | dTHR; |
79072805 LW |
554 | register I32 po; |
555 | ||
6b88bc9c | 556 | if (AvARRAY(PL_comppad) != PL_curpad) |
cea2e8a9 | 557 | Perl_croak(aTHX_ "panic: pad_reset curpad"); |
11343788 | 558 | #ifdef USE_THREADS |
5dc0d613 | 559 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx reset\n", |
6b88bc9c | 560 | (unsigned long) thr, (unsigned long) PL_curpad)); |
11343788 | 561 | #else |
d9bb4600 | 562 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx reset\n", |
6b88bc9c | 563 | (unsigned long) PL_curpad)); |
11343788 | 564 | #endif /* USE_THREADS */ |
6b88bc9c GS |
565 | if (!PL_tainting) { /* Can't mix tainted and non-tainted temporaries. */ |
566 | for (po = AvMAX(PL_comppad); po > PL_padix_floor; po--) { | |
567 | if (PL_curpad[po] && !SvIMMORTAL(PL_curpad[po])) | |
568 | SvPADTMP_off(PL_curpad[po]); | |
748a9306 | 569 | } |
6b88bc9c | 570 | PL_padix = PL_padix_floor; |
79072805 | 571 | } |
d9bb4600 | 572 | #endif |
3280af22 | 573 | PL_pad_reset_pending = FALSE; |
79072805 LW |
574 | } |
575 | ||
a863c7d1 | 576 | #ifdef USE_THREADS |
54b9620d | 577 | /* find_threadsv is not reentrant */ |
a863c7d1 | 578 | PADOFFSET |
864dbfa3 | 579 | Perl_find_threadsv(pTHX_ const char *name) |
a863c7d1 MB |
580 | { |
581 | dTHR; | |
582 | char *p; | |
583 | PADOFFSET key; | |
554b3eca | 584 | SV **svp; |
54b9620d | 585 | /* We currently only handle names of a single character */ |
533c011a | 586 | p = strchr(PL_threadsv_names, *name); |
a863c7d1 MB |
587 | if (!p) |
588 | return NOT_IN_PAD; | |
533c011a | 589 | key = p - PL_threadsv_names; |
2d8e6c8d | 590 | MUTEX_LOCK(&thr->mutex); |
54b9620d | 591 | svp = av_fetch(thr->threadsv, key, FALSE); |
2d8e6c8d GS |
592 | if (svp) |
593 | MUTEX_UNLOCK(&thr->mutex); | |
594 | else { | |
554b3eca | 595 | SV *sv = NEWSV(0, 0); |
54b9620d | 596 | av_store(thr->threadsv, key, sv); |
940cb80d | 597 | thr->threadsvp = AvARRAY(thr->threadsv); |
2d8e6c8d | 598 | MUTEX_UNLOCK(&thr->mutex); |
554b3eca MB |
599 | /* |
600 | * Some magic variables used to be automagically initialised | |
601 | * in gv_fetchpv. Those which are now per-thread magicals get | |
602 | * initialised here instead. | |
603 | */ | |
604 | switch (*name) { | |
54b9620d MB |
605 | case '_': |
606 | break; | |
554b3eca MB |
607 | case ';': |
608 | sv_setpv(sv, "\034"); | |
54b9620d | 609 | sv_magic(sv, 0, 0, name, 1); |
554b3eca | 610 | break; |
c277df42 IZ |
611 | case '&': |
612 | case '`': | |
613 | case '\'': | |
533c011a | 614 | PL_sawampersand = TRUE; |
a3f914c5 GS |
615 | /* FALL THROUGH */ |
616 | case '1': | |
617 | case '2': | |
618 | case '3': | |
619 | case '4': | |
620 | case '5': | |
621 | case '6': | |
622 | case '7': | |
623 | case '8': | |
624 | case '9': | |
c277df42 | 625 | SvREADONLY_on(sv); |
d8b5173a | 626 | /* FALL THROUGH */ |
067391ea GS |
627 | |
628 | /* XXX %! tied to Errno.pm needs to be added here. | |
629 | * See gv_fetchpv(). */ | |
630 | /* case '!': */ | |
631 | ||
54b9620d MB |
632 | default: |
633 | sv_magic(sv, 0, 0, name, 1); | |
554b3eca | 634 | } |
8b73bbec | 635 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), |
54b9620d | 636 | "find_threadsv: new SV %p for $%s%c\n", |
554b3eca MB |
637 | sv, (*name < 32) ? "^" : "", |
638 | (*name < 32) ? toCTRL(*name) : *name)); | |
a863c7d1 MB |
639 | } |
640 | return key; | |
641 | } | |
642 | #endif /* USE_THREADS */ | |
643 | ||
79072805 LW |
644 | /* Destructor */ |
645 | ||
646 | void | |
864dbfa3 | 647 | Perl_op_free(pTHX_ OP *o) |
79072805 | 648 | { |
85e6fe83 | 649 | register OP *kid, *nextkid; |
79072805 | 650 | |
5dc0d613 | 651 | if (!o || o->op_seq == (U16)-1) |
79072805 LW |
652 | return; |
653 | ||
11343788 MB |
654 | if (o->op_flags & OPf_KIDS) { |
655 | for (kid = cUNOPo->op_first; kid; kid = nextkid) { | |
85e6fe83 | 656 | nextkid = kid->op_sibling; /* Get before next freeing kid */ |
79072805 | 657 | op_free(kid); |
85e6fe83 | 658 | } |
79072805 LW |
659 | } |
660 | ||
11343788 | 661 | switch (o->op_type) { |
8990e307 | 662 | case OP_NULL: |
11343788 | 663 | o->op_targ = 0; /* Was holding old type, if any. */ |
8990e307 | 664 | break; |
a0d0e21e | 665 | case OP_ENTEREVAL: |
11343788 | 666 | o->op_targ = 0; /* Was holding hints. */ |
a0d0e21e | 667 | break; |
554b3eca | 668 | #ifdef USE_THREADS |
8dd3ba40 SM |
669 | case OP_ENTERITER: |
670 | if (!(o->op_flags & OPf_SPECIAL)) | |
671 | break; | |
672 | /* FALL THROUGH */ | |
2faa37cc | 673 | case OP_THREADSV: |
54b9620d | 674 | o->op_targ = 0; /* Was holding index into thr->threadsv AV. */ |
554b3eca MB |
675 | break; |
676 | #endif /* USE_THREADS */ | |
a6006777 | 677 | default: |
ac4c12e7 | 678 | if (!(o->op_flags & OPf_REF) |
cea2e8a9 | 679 | || (PL_check[o->op_type] != FUNC_NAME_TO_PTR(Perl_ck_ftst))) |
a6006777 | 680 | break; |
681 | /* FALL THROUGH */ | |
463ee0b2 | 682 | case OP_GVSV: |
79072805 | 683 | case OP_GV: |
a6006777 | 684 | case OP_AELEMFAST: |
11343788 | 685 | SvREFCNT_dec(cGVOPo->op_gv); |
8990e307 LW |
686 | break; |
687 | case OP_NEXTSTATE: | |
688 | case OP_DBSTATE: | |
5196be3e | 689 | Safefree(cCOPo->cop_label); |
11343788 | 690 | SvREFCNT_dec(cCOPo->cop_filegv); |
599cee73 PM |
691 | if (cCOPo->cop_warnings != WARN_NONE && cCOPo->cop_warnings != WARN_ALL) |
692 | SvREFCNT_dec(cCOPo->cop_warnings); | |
79072805 LW |
693 | break; |
694 | case OP_CONST: | |
11343788 | 695 | SvREFCNT_dec(cSVOPo->op_sv); |
79072805 | 696 | break; |
748a9306 LW |
697 | case OP_GOTO: |
698 | case OP_NEXT: | |
699 | case OP_LAST: | |
700 | case OP_REDO: | |
11343788 | 701 | if (o->op_flags & (OPf_SPECIAL|OPf_STACKED|OPf_KIDS)) |
748a9306 LW |
702 | break; |
703 | /* FALL THROUGH */ | |
a0d0e21e | 704 | case OP_TRANS: |
a0ed51b3 LW |
705 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) |
706 | SvREFCNT_dec(cSVOPo->op_sv); | |
707 | else | |
708 | Safefree(cPVOPo->op_pv); | |
a0d0e21e LW |
709 | break; |
710 | case OP_SUBST: | |
11343788 | 711 | op_free(cPMOPo->op_pmreplroot); |
a0d0e21e | 712 | /* FALL THROUGH */ |
748a9306 | 713 | case OP_PUSHRE: |
a0d0e21e | 714 | case OP_MATCH: |
8782bef2 | 715 | case OP_QR: |
c277df42 | 716 | ReREFCNT_dec(cPMOPo->op_pmregexp); |
a0d0e21e | 717 | break; |
79072805 LW |
718 | } |
719 | ||
11343788 MB |
720 | if (o->op_targ > 0) |
721 | pad_free(o->op_targ); | |
8990e307 | 722 | |
b7dc083c NIS |
723 | #ifdef PL_OP_SLAB_ALLOC |
724 | if ((char *) o == PL_OpPtr) | |
725 | { | |
726 | } | |
727 | #else | |
11343788 | 728 | Safefree(o); |
b7dc083c | 729 | #endif |
79072805 LW |
730 | } |
731 | ||
76e3520e | 732 | STATIC void |
cea2e8a9 | 733 | S_null(pTHX_ OP *o) |
8990e307 | 734 | { |
54b9620d | 735 | if (o->op_type != OP_NULL && o->op_type != OP_THREADSV && o->op_targ > 0) |
11343788 MB |
736 | pad_free(o->op_targ); |
737 | o->op_targ = o->op_type; | |
738 | o->op_type = OP_NULL; | |
22c35a8c | 739 | o->op_ppaddr = PL_ppaddr[OP_NULL]; |
8990e307 LW |
740 | } |
741 | ||
79072805 LW |
742 | /* Contextualizers */ |
743 | ||
463ee0b2 | 744 | #define LINKLIST(o) ((o)->op_next ? (o)->op_next : linklist((OP*)o)) |
79072805 LW |
745 | |
746 | OP * | |
864dbfa3 | 747 | Perl_linklist(pTHX_ OP *o) |
79072805 LW |
748 | { |
749 | register OP *kid; | |
750 | ||
11343788 MB |
751 | if (o->op_next) |
752 | return o->op_next; | |
79072805 LW |
753 | |
754 | /* establish postfix order */ | |
11343788 MB |
755 | if (cUNOPo->op_first) { |
756 | o->op_next = LINKLIST(cUNOPo->op_first); | |
757 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) { | |
79072805 LW |
758 | if (kid->op_sibling) |
759 | kid->op_next = LINKLIST(kid->op_sibling); | |
760 | else | |
11343788 | 761 | kid->op_next = o; |
79072805 LW |
762 | } |
763 | } | |
764 | else | |
11343788 | 765 | o->op_next = o; |
79072805 | 766 | |
11343788 | 767 | return o->op_next; |
79072805 LW |
768 | } |
769 | ||
770 | OP * | |
864dbfa3 | 771 | Perl_scalarkids(pTHX_ OP *o) |
79072805 LW |
772 | { |
773 | OP *kid; | |
11343788 MB |
774 | if (o && o->op_flags & OPf_KIDS) { |
775 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
79072805 LW |
776 | scalar(kid); |
777 | } | |
11343788 | 778 | return o; |
79072805 LW |
779 | } |
780 | ||
76e3520e | 781 | STATIC OP * |
cea2e8a9 | 782 | S_scalarboolean(pTHX_ OP *o) |
8990e307 | 783 | { |
d008e5eb | 784 | if (o->op_type == OP_SASSIGN && cBINOPo->op_first->op_type == OP_CONST) { |
0f15f207 | 785 | dTHR; |
d008e5eb GS |
786 | if (ckWARN(WARN_SYNTAX)) { |
787 | line_t oldline = PL_curcop->cop_line; | |
a0d0e21e | 788 | |
d008e5eb GS |
789 | if (PL_copline != NOLINE) |
790 | PL_curcop->cop_line = PL_copline; | |
cea2e8a9 | 791 | Perl_warner(aTHX_ WARN_SYNTAX, "Found = in conditional, should be =="); |
d008e5eb GS |
792 | PL_curcop->cop_line = oldline; |
793 | } | |
a0d0e21e | 794 | } |
11343788 | 795 | return scalar(o); |
8990e307 LW |
796 | } |
797 | ||
798 | OP * | |
864dbfa3 | 799 | Perl_scalar(pTHX_ OP *o) |
79072805 LW |
800 | { |
801 | OP *kid; | |
802 | ||
a0d0e21e | 803 | /* assumes no premature commitment */ |
3280af22 | 804 | if (!o || (o->op_flags & OPf_WANT) || PL_error_count |
5dc0d613 | 805 | || o->op_type == OP_RETURN) |
11343788 | 806 | return o; |
79072805 | 807 | |
5dc0d613 | 808 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_SCALAR; |
79072805 | 809 | |
11343788 | 810 | switch (o->op_type) { |
79072805 | 811 | case OP_REPEAT: |
11343788 MB |
812 | if (o->op_private & OPpREPEAT_DOLIST) |
813 | null(((LISTOP*)cBINOPo->op_first)->op_first); | |
814 | scalar(cBINOPo->op_first); | |
8990e307 | 815 | break; |
79072805 LW |
816 | case OP_OR: |
817 | case OP_AND: | |
818 | case OP_COND_EXPR: | |
11343788 | 819 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
8990e307 | 820 | scalar(kid); |
79072805 | 821 | break; |
a0d0e21e | 822 | case OP_SPLIT: |
11343788 | 823 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e LW |
824 | if (!kPMOP->op_pmreplroot) |
825 | deprecate("implicit split to @_"); | |
826 | } | |
827 | /* FALL THROUGH */ | |
79072805 | 828 | case OP_MATCH: |
8782bef2 | 829 | case OP_QR: |
79072805 LW |
830 | case OP_SUBST: |
831 | case OP_NULL: | |
8990e307 | 832 | default: |
11343788 MB |
833 | if (o->op_flags & OPf_KIDS) { |
834 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) | |
8990e307 LW |
835 | scalar(kid); |
836 | } | |
79072805 LW |
837 | break; |
838 | case OP_LEAVE: | |
839 | case OP_LEAVETRY: | |
5dc0d613 | 840 | kid = cLISTOPo->op_first; |
54310121 | 841 | scalar(kid); |
842 | while (kid = kid->op_sibling) { | |
843 | if (kid->op_sibling) | |
844 | scalarvoid(kid); | |
845 | else | |
846 | scalar(kid); | |
847 | } | |
3280af22 | 848 | WITH_THR(PL_curcop = &PL_compiling); |
54310121 | 849 | break; |
748a9306 | 850 | case OP_SCOPE: |
79072805 | 851 | case OP_LINESEQ: |
8990e307 | 852 | case OP_LIST: |
11343788 | 853 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
854 | if (kid->op_sibling) |
855 | scalarvoid(kid); | |
856 | else | |
857 | scalar(kid); | |
858 | } | |
3280af22 | 859 | WITH_THR(PL_curcop = &PL_compiling); |
79072805 LW |
860 | break; |
861 | } | |
11343788 | 862 | return o; |
79072805 LW |
863 | } |
864 | ||
865 | OP * | |
864dbfa3 | 866 | Perl_scalarvoid(pTHX_ OP *o) |
79072805 LW |
867 | { |
868 | OP *kid; | |
8990e307 LW |
869 | char* useless = 0; |
870 | SV* sv; | |
2ebea0a1 GS |
871 | U8 want; |
872 | ||
873 | if (o->op_type == OP_NEXTSTATE || o->op_type == OP_DBSTATE || | |
874 | (o->op_type == OP_NULL && | |
875 | (o->op_targ == OP_NEXTSTATE || o->op_targ == OP_DBSTATE))) | |
876 | { | |
877 | dTHR; | |
878 | PL_curcop = (COP*)o; /* for warning below */ | |
879 | } | |
79072805 | 880 | |
54310121 | 881 | /* assumes no premature commitment */ |
2ebea0a1 GS |
882 | want = o->op_flags & OPf_WANT; |
883 | if ((want && want != OPf_WANT_SCALAR) || PL_error_count | |
5dc0d613 | 884 | || o->op_type == OP_RETURN) |
11343788 | 885 | return o; |
79072805 | 886 | |
5dc0d613 | 887 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_VOID; |
79072805 | 888 | |
11343788 | 889 | switch (o->op_type) { |
79072805 | 890 | default: |
22c35a8c | 891 | if (!(PL_opargs[o->op_type] & OA_FOLDCONST)) |
8990e307 | 892 | break; |
36477c24 | 893 | /* FALL THROUGH */ |
894 | case OP_REPEAT: | |
11343788 | 895 | if (o->op_flags & OPf_STACKED) |
8990e307 | 896 | break; |
5d82c453 GA |
897 | goto func_ops; |
898 | case OP_SUBSTR: | |
899 | if (o->op_private == 4) | |
900 | break; | |
8990e307 LW |
901 | /* FALL THROUGH */ |
902 | case OP_GVSV: | |
903 | case OP_WANTARRAY: | |
904 | case OP_GV: | |
905 | case OP_PADSV: | |
906 | case OP_PADAV: | |
907 | case OP_PADHV: | |
908 | case OP_PADANY: | |
909 | case OP_AV2ARYLEN: | |
8990e307 | 910 | case OP_REF: |
a0d0e21e LW |
911 | case OP_REFGEN: |
912 | case OP_SREFGEN: | |
8990e307 LW |
913 | case OP_DEFINED: |
914 | case OP_HEX: | |
915 | case OP_OCT: | |
916 | case OP_LENGTH: | |
8990e307 LW |
917 | case OP_VEC: |
918 | case OP_INDEX: | |
919 | case OP_RINDEX: | |
920 | case OP_SPRINTF: | |
921 | case OP_AELEM: | |
922 | case OP_AELEMFAST: | |
923 | case OP_ASLICE: | |
8990e307 LW |
924 | case OP_HELEM: |
925 | case OP_HSLICE: | |
926 | case OP_UNPACK: | |
927 | case OP_PACK: | |
8990e307 LW |
928 | case OP_JOIN: |
929 | case OP_LSLICE: | |
930 | case OP_ANONLIST: | |
931 | case OP_ANONHASH: | |
932 | case OP_SORT: | |
933 | case OP_REVERSE: | |
934 | case OP_RANGE: | |
935 | case OP_FLIP: | |
936 | case OP_FLOP: | |
937 | case OP_CALLER: | |
938 | case OP_FILENO: | |
939 | case OP_EOF: | |
940 | case OP_TELL: | |
941 | case OP_GETSOCKNAME: | |
942 | case OP_GETPEERNAME: | |
943 | case OP_READLINK: | |
944 | case OP_TELLDIR: | |
945 | case OP_GETPPID: | |
946 | case OP_GETPGRP: | |
947 | case OP_GETPRIORITY: | |
948 | case OP_TIME: | |
949 | case OP_TMS: | |
950 | case OP_LOCALTIME: | |
951 | case OP_GMTIME: | |
952 | case OP_GHBYNAME: | |
953 | case OP_GHBYADDR: | |
954 | case OP_GHOSTENT: | |
955 | case OP_GNBYNAME: | |
956 | case OP_GNBYADDR: | |
957 | case OP_GNETENT: | |
958 | case OP_GPBYNAME: | |
959 | case OP_GPBYNUMBER: | |
960 | case OP_GPROTOENT: | |
961 | case OP_GSBYNAME: | |
962 | case OP_GSBYPORT: | |
963 | case OP_GSERVENT: | |
964 | case OP_GPWNAM: | |
965 | case OP_GPWUID: | |
966 | case OP_GGRNAM: | |
967 | case OP_GGRGID: | |
968 | case OP_GETLOGIN: | |
5d82c453 | 969 | func_ops: |
11343788 | 970 | if (!(o->op_private & OPpLVAL_INTRO)) |
22c35a8c | 971 | useless = PL_op_desc[o->op_type]; |
8990e307 LW |
972 | break; |
973 | ||
974 | case OP_RV2GV: | |
975 | case OP_RV2SV: | |
976 | case OP_RV2AV: | |
977 | case OP_RV2HV: | |
11343788 MB |
978 | if (!(o->op_private & OPpLVAL_INTRO) && |
979 | (!o->op_sibling || o->op_sibling->op_type != OP_READLINE)) | |
8990e307 LW |
980 | useless = "a variable"; |
981 | break; | |
79072805 LW |
982 | |
983 | case OP_CONST: | |
11343788 | 984 | sv = cSVOPo->op_sv; |
7a52d87a GS |
985 | if (cSVOPo->op_private & OPpCONST_STRICT) |
986 | no_bareword_allowed(o); | |
987 | else { | |
d008e5eb GS |
988 | dTHR; |
989 | if (ckWARN(WARN_VOID)) { | |
990 | useless = "a constant"; | |
991 | if (SvNIOK(sv) && (SvNV(sv) == 0.0 || SvNV(sv) == 1.0)) | |
992 | useless = 0; | |
993 | else if (SvPOK(sv)) { | |
994 | if (strnEQ(SvPVX(sv), "di", 2) || | |
995 | strnEQ(SvPVX(sv), "ds", 2) || | |
996 | strnEQ(SvPVX(sv), "ig", 2)) | |
997 | useless = 0; | |
998 | } | |
8990e307 LW |
999 | } |
1000 | } | |
11343788 | 1001 | null(o); /* don't execute a constant */ |
8990e307 | 1002 | SvREFCNT_dec(sv); /* don't even remember it */ |
79072805 LW |
1003 | break; |
1004 | ||
1005 | case OP_POSTINC: | |
11343788 | 1006 | o->op_type = OP_PREINC; /* pre-increment is faster */ |
22c35a8c | 1007 | o->op_ppaddr = PL_ppaddr[OP_PREINC]; |
79072805 LW |
1008 | break; |
1009 | ||
1010 | case OP_POSTDEC: | |
11343788 | 1011 | o->op_type = OP_PREDEC; /* pre-decrement is faster */ |
22c35a8c | 1012 | o->op_ppaddr = PL_ppaddr[OP_PREDEC]; |
79072805 LW |
1013 | break; |
1014 | ||
79072805 LW |
1015 | case OP_OR: |
1016 | case OP_AND: | |
1017 | case OP_COND_EXPR: | |
11343788 | 1018 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
1019 | scalarvoid(kid); |
1020 | break; | |
5aabfad6 | 1021 | |
a0d0e21e | 1022 | case OP_NULL: |
11343788 | 1023 | if (o->op_flags & OPf_STACKED) |
a0d0e21e | 1024 | break; |
5aabfad6 | 1025 | /* FALL THROUGH */ |
2ebea0a1 GS |
1026 | case OP_NEXTSTATE: |
1027 | case OP_DBSTATE: | |
79072805 LW |
1028 | case OP_ENTERTRY: |
1029 | case OP_ENTER: | |
1030 | case OP_SCALAR: | |
11343788 | 1031 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1032 | break; |
54310121 | 1033 | /* FALL THROUGH */ |
463ee0b2 | 1034 | case OP_SCOPE: |
79072805 LW |
1035 | case OP_LEAVE: |
1036 | case OP_LEAVETRY: | |
a0d0e21e | 1037 | case OP_LEAVELOOP: |
79072805 | 1038 | case OP_LINESEQ: |
79072805 | 1039 | case OP_LIST: |
11343788 | 1040 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
1041 | scalarvoid(kid); |
1042 | break; | |
c90c0ff4 | 1043 | case OP_ENTEREVAL: |
5196be3e | 1044 | scalarkids(o); |
c90c0ff4 | 1045 | break; |
5aabfad6 | 1046 | case OP_REQUIRE: |
c90c0ff4 | 1047 | /* all requires must return a boolean value */ |
5196be3e MB |
1048 | o->op_flags &= ~OPf_WANT; |
1049 | return scalar(o); | |
a0d0e21e | 1050 | case OP_SPLIT: |
11343788 | 1051 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e LW |
1052 | if (!kPMOP->op_pmreplroot) |
1053 | deprecate("implicit split to @_"); | |
1054 | } | |
1055 | break; | |
79072805 | 1056 | } |
d008e5eb GS |
1057 | if (useless) { |
1058 | dTHR; | |
1059 | if (ckWARN(WARN_VOID)) | |
cea2e8a9 | 1060 | Perl_warner(aTHX_ WARN_VOID, "Useless use of %s in void context", useless); |
d008e5eb | 1061 | } |
11343788 | 1062 | return o; |
79072805 LW |
1063 | } |
1064 | ||
1065 | OP * | |
864dbfa3 | 1066 | Perl_listkids(pTHX_ OP *o) |
79072805 LW |
1067 | { |
1068 | OP *kid; | |
11343788 MB |
1069 | if (o && o->op_flags & OPf_KIDS) { |
1070 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
79072805 LW |
1071 | list(kid); |
1072 | } | |
11343788 | 1073 | return o; |
79072805 LW |
1074 | } |
1075 | ||
1076 | OP * | |
864dbfa3 | 1077 | Perl_list(pTHX_ OP *o) |
79072805 LW |
1078 | { |
1079 | OP *kid; | |
1080 | ||
a0d0e21e | 1081 | /* assumes no premature commitment */ |
3280af22 | 1082 | if (!o || (o->op_flags & OPf_WANT) || PL_error_count |
5dc0d613 | 1083 | || o->op_type == OP_RETURN) |
11343788 | 1084 | return o; |
79072805 | 1085 | |
5dc0d613 | 1086 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_LIST; |
79072805 | 1087 | |
11343788 | 1088 | switch (o->op_type) { |
79072805 LW |
1089 | case OP_FLOP: |
1090 | case OP_REPEAT: | |
11343788 | 1091 | list(cBINOPo->op_first); |
79072805 LW |
1092 | break; |
1093 | case OP_OR: | |
1094 | case OP_AND: | |
1095 | case OP_COND_EXPR: | |
11343788 | 1096 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
1097 | list(kid); |
1098 | break; | |
1099 | default: | |
1100 | case OP_MATCH: | |
8782bef2 | 1101 | case OP_QR: |
79072805 LW |
1102 | case OP_SUBST: |
1103 | case OP_NULL: | |
11343788 | 1104 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1105 | break; |
11343788 MB |
1106 | if (!o->op_next && cUNOPo->op_first->op_type == OP_FLOP) { |
1107 | list(cBINOPo->op_first); | |
1108 | return gen_constant_list(o); | |
79072805 LW |
1109 | } |
1110 | case OP_LIST: | |
11343788 | 1111 | listkids(o); |
79072805 LW |
1112 | break; |
1113 | case OP_LEAVE: | |
1114 | case OP_LEAVETRY: | |
5dc0d613 | 1115 | kid = cLISTOPo->op_first; |
54310121 | 1116 | list(kid); |
1117 | while (kid = kid->op_sibling) { | |
1118 | if (kid->op_sibling) | |
1119 | scalarvoid(kid); | |
1120 | else | |
1121 | list(kid); | |
1122 | } | |
3280af22 | 1123 | WITH_THR(PL_curcop = &PL_compiling); |
54310121 | 1124 | break; |
748a9306 | 1125 | case OP_SCOPE: |
79072805 | 1126 | case OP_LINESEQ: |
11343788 | 1127 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
1128 | if (kid->op_sibling) |
1129 | scalarvoid(kid); | |
1130 | else | |
1131 | list(kid); | |
1132 | } | |
3280af22 | 1133 | WITH_THR(PL_curcop = &PL_compiling); |
79072805 | 1134 | break; |
c90c0ff4 | 1135 | case OP_REQUIRE: |
1136 | /* all requires must return a boolean value */ | |
5196be3e MB |
1137 | o->op_flags &= ~OPf_WANT; |
1138 | return scalar(o); | |
79072805 | 1139 | } |
11343788 | 1140 | return o; |
79072805 LW |
1141 | } |
1142 | ||
1143 | OP * | |
864dbfa3 | 1144 | Perl_scalarseq(pTHX_ OP *o) |
79072805 LW |
1145 | { |
1146 | OP *kid; | |
1147 | ||
11343788 MB |
1148 | if (o) { |
1149 | if (o->op_type == OP_LINESEQ || | |
1150 | o->op_type == OP_SCOPE || | |
1151 | o->op_type == OP_LEAVE || | |
1152 | o->op_type == OP_LEAVETRY) | |
463ee0b2 | 1153 | { |
0f15f207 | 1154 | dTHR; |
11343788 | 1155 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
ed6116ce | 1156 | if (kid->op_sibling) { |
463ee0b2 | 1157 | scalarvoid(kid); |
ed6116ce | 1158 | } |
463ee0b2 | 1159 | } |
3280af22 | 1160 | PL_curcop = &PL_compiling; |
79072805 | 1161 | } |
11343788 | 1162 | o->op_flags &= ~OPf_PARENS; |
3280af22 | 1163 | if (PL_hints & HINT_BLOCK_SCOPE) |
11343788 | 1164 | o->op_flags |= OPf_PARENS; |
79072805 | 1165 | } |
8990e307 | 1166 | else |
11343788 MB |
1167 | o = newOP(OP_STUB, 0); |
1168 | return o; | |
79072805 LW |
1169 | } |
1170 | ||
76e3520e | 1171 | STATIC OP * |
cea2e8a9 | 1172 | S_modkids(pTHX_ OP *o, I32 type) |
79072805 LW |
1173 | { |
1174 | OP *kid; | |
11343788 MB |
1175 | if (o && o->op_flags & OPf_KIDS) { |
1176 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
463ee0b2 | 1177 | mod(kid, type); |
79072805 | 1178 | } |
11343788 | 1179 | return o; |
79072805 LW |
1180 | } |
1181 | ||
79072805 | 1182 | OP * |
864dbfa3 | 1183 | Perl_mod(pTHX_ OP *o, I32 type) |
79072805 | 1184 | { |
11343788 | 1185 | dTHR; |
79072805 LW |
1186 | OP *kid; |
1187 | SV *sv; | |
2d8e6c8d | 1188 | STRLEN n_a; |
79072805 | 1189 | |
3280af22 | 1190 | if (!o || PL_error_count) |
11343788 | 1191 | return o; |
79072805 | 1192 | |
11343788 | 1193 | switch (o->op_type) { |
68dc0745 | 1194 | case OP_UNDEF: |
3280af22 | 1195 | PL_modcount++; |
5dc0d613 | 1196 | return o; |
a0d0e21e | 1197 | case OP_CONST: |
11343788 | 1198 | if (!(o->op_private & (OPpCONST_ARYBASE))) |
a0d0e21e | 1199 | goto nomod; |
3280af22 NIS |
1200 | if (PL_eval_start && PL_eval_start->op_type == OP_CONST) { |
1201 | PL_compiling.cop_arybase = (I32)SvIV(((SVOP*)PL_eval_start)->op_sv); | |
1202 | PL_eval_start = 0; | |
a0d0e21e LW |
1203 | } |
1204 | else if (!type) { | |
3280af22 NIS |
1205 | SAVEI32(PL_compiling.cop_arybase); |
1206 | PL_compiling.cop_arybase = 0; | |
a0d0e21e LW |
1207 | } |
1208 | else if (type == OP_REFGEN) | |
1209 | goto nomod; | |
1210 | else | |
cea2e8a9 | 1211 | Perl_croak(aTHX_ "That use of $[ is unsupported"); |
a0d0e21e | 1212 | break; |
5f05dabc | 1213 | case OP_STUB: |
5196be3e | 1214 | if (o->op_flags & OPf_PARENS) |
5f05dabc | 1215 | break; |
1216 | goto nomod; | |
a0d0e21e LW |
1217 | case OP_ENTERSUB: |
1218 | if ((type == OP_UNDEF || type == OP_REFGEN) && | |
11343788 MB |
1219 | !(o->op_flags & OPf_STACKED)) { |
1220 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
22c35a8c | 1221 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 MB |
1222 | assert(cUNOPo->op_first->op_type == OP_NULL); |
1223 | null(((LISTOP*)cUNOPo->op_first)->op_first);/* disable pushmark */ | |
79072805 LW |
1224 | break; |
1225 | } | |
1226 | /* FALL THROUGH */ | |
1227 | default: | |
a0d0e21e LW |
1228 | nomod: |
1229 | /* grep, foreach, subcalls, refgen */ | |
1230 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) | |
1231 | break; | |
cea2e8a9 | 1232 | yyerror(Perl_form(aTHX_ "Can't modify %s in %s", |
638bc118 | 1233 | (o->op_type == OP_NULL && (o->op_flags & OPf_SPECIAL) |
22c35a8c GS |
1234 | ? "do block" : PL_op_desc[o->op_type]), |
1235 | type ? PL_op_desc[type] : "local")); | |
11343788 | 1236 | return o; |
79072805 | 1237 | |
a0d0e21e LW |
1238 | case OP_PREINC: |
1239 | case OP_PREDEC: | |
1240 | case OP_POW: | |
1241 | case OP_MULTIPLY: | |
1242 | case OP_DIVIDE: | |
1243 | case OP_MODULO: | |
1244 | case OP_REPEAT: | |
1245 | case OP_ADD: | |
1246 | case OP_SUBTRACT: | |
1247 | case OP_CONCAT: | |
1248 | case OP_LEFT_SHIFT: | |
1249 | case OP_RIGHT_SHIFT: | |
1250 | case OP_BIT_AND: | |
1251 | case OP_BIT_XOR: | |
1252 | case OP_BIT_OR: | |
1253 | case OP_I_MULTIPLY: | |
1254 | case OP_I_DIVIDE: | |
1255 | case OP_I_MODULO: | |
1256 | case OP_I_ADD: | |
1257 | case OP_I_SUBTRACT: | |
11343788 | 1258 | if (!(o->op_flags & OPf_STACKED)) |
a0d0e21e | 1259 | goto nomod; |
3280af22 | 1260 | PL_modcount++; |
a0d0e21e LW |
1261 | break; |
1262 | ||
79072805 | 1263 | case OP_COND_EXPR: |
11343788 | 1264 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 | 1265 | mod(kid, type); |
79072805 LW |
1266 | break; |
1267 | ||
1268 | case OP_RV2AV: | |
1269 | case OP_RV2HV: | |
93af7a87 | 1270 | if (!type && cUNOPo->op_first->op_type != OP_GV) |
cea2e8a9 | 1271 | Perl_croak(aTHX_ "Can't localize through a reference"); |
11343788 | 1272 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) { |
3280af22 | 1273 | PL_modcount = 10000; |
11343788 | 1274 | return o; /* Treat \(@foo) like ordinary list. */ |
748a9306 LW |
1275 | } |
1276 | /* FALL THROUGH */ | |
79072805 | 1277 | case OP_RV2GV: |
5dc0d613 | 1278 | if (scalar_mod_type(o, type)) |
3fe9a6f1 | 1279 | goto nomod; |
11343788 | 1280 | ref(cUNOPo->op_first, o->op_type); |
79072805 LW |
1281 | /* FALL THROUGH */ |
1282 | case OP_AASSIGN: | |
1283 | case OP_ASLICE: | |
1284 | case OP_HSLICE: | |
93a17b20 LW |
1285 | case OP_NEXTSTATE: |
1286 | case OP_DBSTATE: | |
a0d0e21e LW |
1287 | case OP_REFGEN: |
1288 | case OP_CHOMP: | |
3280af22 | 1289 | PL_modcount = 10000; |
79072805 | 1290 | break; |
463ee0b2 | 1291 | case OP_RV2SV: |
11343788 | 1292 | if (!type && cUNOPo->op_first->op_type != OP_GV) |
cea2e8a9 | 1293 | Perl_croak(aTHX_ "Can't localize through a reference"); |
aeea060c | 1294 | ref(cUNOPo->op_first, o->op_type); |
463ee0b2 | 1295 | /* FALL THROUGH */ |
79072805 | 1296 | case OP_GV: |
463ee0b2 | 1297 | case OP_AV2ARYLEN: |
3280af22 | 1298 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 1299 | case OP_SASSIGN: |
bf4b1e52 GS |
1300 | case OP_ANDASSIGN: |
1301 | case OP_ORASSIGN: | |
8990e307 | 1302 | case OP_AELEMFAST: |
3280af22 | 1303 | PL_modcount++; |
8990e307 LW |
1304 | break; |
1305 | ||
748a9306 LW |
1306 | case OP_PADAV: |
1307 | case OP_PADHV: | |
3280af22 | 1308 | PL_modcount = 10000; |
5196be3e MB |
1309 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) |
1310 | return o; /* Treat \(@foo) like ordinary list. */ | |
1311 | if (scalar_mod_type(o, type)) | |
3fe9a6f1 | 1312 | goto nomod; |
748a9306 LW |
1313 | /* FALL THROUGH */ |
1314 | case OP_PADSV: | |
3280af22 | 1315 | PL_modcount++; |
748a9306 | 1316 | if (!type) |
cea2e8a9 | 1317 | Perl_croak(aTHX_ "Can't localize lexical variable %s", |
2d8e6c8d | 1318 | SvPV(*av_fetch(PL_comppad_name, o->op_targ, 4), n_a)); |
463ee0b2 LW |
1319 | break; |
1320 | ||
554b3eca | 1321 | #ifdef USE_THREADS |
2faa37cc | 1322 | case OP_THREADSV: |
533c011a | 1323 | PL_modcount++; /* XXX ??? */ |
554b3eca MB |
1324 | break; |
1325 | #endif /* USE_THREADS */ | |
1326 | ||
748a9306 LW |
1327 | case OP_PUSHMARK: |
1328 | break; | |
a0d0e21e | 1329 | |
69969c6f SB |
1330 | case OP_KEYS: |
1331 | if (type != OP_SASSIGN) | |
1332 | goto nomod; | |
5d82c453 GA |
1333 | goto lvalue_func; |
1334 | case OP_SUBSTR: | |
1335 | if (o->op_private == 4) /* don't allow 4 arg substr as lvalue */ | |
1336 | goto nomod; | |
5f05dabc | 1337 | /* FALL THROUGH */ |
a0d0e21e | 1338 | case OP_POS: |
463ee0b2 | 1339 | case OP_VEC: |
5d82c453 | 1340 | lvalue_func: |
11343788 MB |
1341 | pad_free(o->op_targ); |
1342 | o->op_targ = pad_alloc(o->op_type, SVs_PADMY); | |
5dc0d613 | 1343 | assert(SvTYPE(PAD_SV(o->op_targ)) == SVt_NULL); |
11343788 MB |
1344 | if (o->op_flags & OPf_KIDS) |
1345 | mod(cBINOPo->op_first->op_sibling, type); | |
463ee0b2 | 1346 | break; |
a0d0e21e | 1347 | |
463ee0b2 LW |
1348 | case OP_AELEM: |
1349 | case OP_HELEM: | |
11343788 | 1350 | ref(cBINOPo->op_first, o->op_type); |
68dc0745 | 1351 | if (type == OP_ENTERSUB && |
5dc0d613 MB |
1352 | !(o->op_private & (OPpLVAL_INTRO | OPpDEREF))) |
1353 | o->op_private |= OPpLVAL_DEFER; | |
3280af22 | 1354 | PL_modcount++; |
463ee0b2 LW |
1355 | break; |
1356 | ||
1357 | case OP_SCOPE: | |
1358 | case OP_LEAVE: | |
1359 | case OP_ENTER: | |
11343788 MB |
1360 | if (o->op_flags & OPf_KIDS) |
1361 | mod(cLISTOPo->op_last, type); | |
a0d0e21e LW |
1362 | break; |
1363 | ||
1364 | case OP_NULL: | |
638bc118 GS |
1365 | if (o->op_flags & OPf_SPECIAL) /* do BLOCK */ |
1366 | goto nomod; | |
1367 | else if (!(o->op_flags & OPf_KIDS)) | |
463ee0b2 | 1368 | break; |
11343788 MB |
1369 | if (o->op_targ != OP_LIST) { |
1370 | mod(cBINOPo->op_first, type); | |
a0d0e21e LW |
1371 | break; |
1372 | } | |
1373 | /* FALL THROUGH */ | |
463ee0b2 | 1374 | case OP_LIST: |
11343788 | 1375 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1376 | mod(kid, type); |
1377 | break; | |
1378 | } | |
11343788 | 1379 | o->op_flags |= OPf_MOD; |
a0d0e21e LW |
1380 | |
1381 | if (type == OP_AASSIGN || type == OP_SASSIGN) | |
11343788 | 1382 | o->op_flags |= OPf_SPECIAL|OPf_REF; |
a0d0e21e | 1383 | else if (!type) { |
11343788 MB |
1384 | o->op_private |= OPpLVAL_INTRO; |
1385 | o->op_flags &= ~OPf_SPECIAL; | |
3280af22 | 1386 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 1387 | } |
a0d0e21e | 1388 | else if (type != OP_GREPSTART && type != OP_ENTERSUB) |
11343788 MB |
1389 | o->op_flags |= OPf_REF; |
1390 | return o; | |
463ee0b2 LW |
1391 | } |
1392 | ||
864dbfa3 | 1393 | STATIC bool |
cea2e8a9 | 1394 | S_scalar_mod_type(pTHX_ OP *o, I32 type) |
3fe9a6f1 | 1395 | { |
1396 | switch (type) { | |
1397 | case OP_SASSIGN: | |
5196be3e | 1398 | if (o->op_type == OP_RV2GV) |
3fe9a6f1 | 1399 | return FALSE; |
1400 | /* FALL THROUGH */ | |
1401 | case OP_PREINC: | |
1402 | case OP_PREDEC: | |
1403 | case OP_POSTINC: | |
1404 | case OP_POSTDEC: | |
1405 | case OP_I_PREINC: | |
1406 | case OP_I_PREDEC: | |
1407 | case OP_I_POSTINC: | |
1408 | case OP_I_POSTDEC: | |
1409 | case OP_POW: | |
1410 | case OP_MULTIPLY: | |
1411 | case OP_DIVIDE: | |
1412 | case OP_MODULO: | |
1413 | case OP_REPEAT: | |
1414 | case OP_ADD: | |
1415 | case OP_SUBTRACT: | |
1416 | case OP_I_MULTIPLY: | |
1417 | case OP_I_DIVIDE: | |
1418 | case OP_I_MODULO: | |
1419 | case OP_I_ADD: | |
1420 | case OP_I_SUBTRACT: | |
1421 | case OP_LEFT_SHIFT: | |
1422 | case OP_RIGHT_SHIFT: | |
1423 | case OP_BIT_AND: | |
1424 | case OP_BIT_XOR: | |
1425 | case OP_BIT_OR: | |
1426 | case OP_CONCAT: | |
1427 | case OP_SUBST: | |
1428 | case OP_TRANS: | |
49e9fbe6 GS |
1429 | case OP_READ: |
1430 | case OP_SYSREAD: | |
1431 | case OP_RECV: | |
bf4b1e52 GS |
1432 | case OP_ANDASSIGN: |
1433 | case OP_ORASSIGN: | |
3fe9a6f1 | 1434 | return TRUE; |
1435 | default: | |
1436 | return FALSE; | |
1437 | } | |
1438 | } | |
1439 | ||
35cd451c | 1440 | STATIC bool |
cea2e8a9 | 1441 | S_is_handle_constructor(pTHX_ OP *o, I32 argnum) |
35cd451c GS |
1442 | { |
1443 | switch (o->op_type) { | |
1444 | case OP_PIPE_OP: | |
1445 | case OP_SOCKPAIR: | |
1446 | if (argnum == 2) | |
1447 | return TRUE; | |
1448 | /* FALL THROUGH */ | |
1449 | case OP_SYSOPEN: | |
1450 | case OP_OPEN: | |
ded8aa31 | 1451 | case OP_SELECT: /* XXX c.f. SelectSaver.pm */ |
35cd451c GS |
1452 | case OP_SOCKET: |
1453 | case OP_OPEN_DIR: | |
1454 | case OP_ACCEPT: | |
1455 | if (argnum == 1) | |
1456 | return TRUE; | |
1457 | /* FALL THROUGH */ | |
1458 | default: | |
1459 | return FALSE; | |
1460 | } | |
1461 | } | |
1462 | ||
463ee0b2 | 1463 | OP * |
864dbfa3 | 1464 | Perl_refkids(pTHX_ OP *o, I32 type) |
463ee0b2 LW |
1465 | { |
1466 | OP *kid; | |
11343788 MB |
1467 | if (o && o->op_flags & OPf_KIDS) { |
1468 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
463ee0b2 LW |
1469 | ref(kid, type); |
1470 | } | |
11343788 | 1471 | return o; |
463ee0b2 LW |
1472 | } |
1473 | ||
1474 | OP * | |
864dbfa3 | 1475 | Perl_ref(pTHX_ OP *o, I32 type) |
463ee0b2 LW |
1476 | { |
1477 | OP *kid; | |
463ee0b2 | 1478 | |
3280af22 | 1479 | if (!o || PL_error_count) |
11343788 | 1480 | return o; |
463ee0b2 | 1481 | |
11343788 | 1482 | switch (o->op_type) { |
a0d0e21e | 1483 | case OP_ENTERSUB: |
e55aaa0e | 1484 | if ((type == OP_DEFINED || type == OP_LOCK) && |
11343788 MB |
1485 | !(o->op_flags & OPf_STACKED)) { |
1486 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
22c35a8c | 1487 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 MB |
1488 | assert(cUNOPo->op_first->op_type == OP_NULL); |
1489 | null(((LISTOP*)cUNOPo->op_first)->op_first); /* disable pushmark */ | |
1490 | o->op_flags |= OPf_SPECIAL; | |
8990e307 LW |
1491 | } |
1492 | break; | |
aeea060c | 1493 | |
463ee0b2 | 1494 | case OP_COND_EXPR: |
11343788 | 1495 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1496 | ref(kid, type); |
1497 | break; | |
8990e307 | 1498 | case OP_RV2SV: |
35cd451c GS |
1499 | if (type == OP_DEFINED) |
1500 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
11343788 | 1501 | ref(cUNOPo->op_first, o->op_type); |
4633a7c4 LW |
1502 | /* FALL THROUGH */ |
1503 | case OP_PADSV: | |
5f05dabc | 1504 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1505 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1506 | : type == OP_RV2HV ? OPpDEREF_HV | |
1507 | : OPpDEREF_SV); | |
11343788 | 1508 | o->op_flags |= OPf_MOD; |
a0d0e21e | 1509 | } |
8990e307 LW |
1510 | break; |
1511 | ||
2faa37cc | 1512 | case OP_THREADSV: |
a863c7d1 MB |
1513 | o->op_flags |= OPf_MOD; /* XXX ??? */ |
1514 | break; | |
1515 | ||
463ee0b2 LW |
1516 | case OP_RV2AV: |
1517 | case OP_RV2HV: | |
aeea060c | 1518 | o->op_flags |= OPf_REF; |
8990e307 | 1519 | /* FALL THROUGH */ |
463ee0b2 | 1520 | case OP_RV2GV: |
35cd451c GS |
1521 | if (type == OP_DEFINED) |
1522 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
11343788 | 1523 | ref(cUNOPo->op_first, o->op_type); |
463ee0b2 | 1524 | break; |
8990e307 | 1525 | |
463ee0b2 LW |
1526 | case OP_PADAV: |
1527 | case OP_PADHV: | |
aeea060c | 1528 | o->op_flags |= OPf_REF; |
79072805 | 1529 | break; |
aeea060c | 1530 | |
8990e307 | 1531 | case OP_SCALAR: |
79072805 | 1532 | case OP_NULL: |
11343788 | 1533 | if (!(o->op_flags & OPf_KIDS)) |
463ee0b2 | 1534 | break; |
11343788 | 1535 | ref(cBINOPo->op_first, type); |
79072805 LW |
1536 | break; |
1537 | case OP_AELEM: | |
1538 | case OP_HELEM: | |
11343788 | 1539 | ref(cBINOPo->op_first, o->op_type); |
5f05dabc | 1540 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1541 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1542 | : type == OP_RV2HV ? OPpDEREF_HV | |
1543 | : OPpDEREF_SV); | |
11343788 | 1544 | o->op_flags |= OPf_MOD; |
8990e307 | 1545 | } |
79072805 LW |
1546 | break; |
1547 | ||
463ee0b2 | 1548 | case OP_SCOPE: |
79072805 LW |
1549 | case OP_LEAVE: |
1550 | case OP_ENTER: | |
8990e307 | 1551 | case OP_LIST: |
11343788 | 1552 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1553 | break; |
11343788 | 1554 | ref(cLISTOPo->op_last, type); |
79072805 | 1555 | break; |
a0d0e21e LW |
1556 | default: |
1557 | break; | |
79072805 | 1558 | } |
11343788 | 1559 | return scalar(o); |
8990e307 | 1560 | |
79072805 LW |
1561 | } |
1562 | ||
1563 | OP * | |
864dbfa3 | 1564 | Perl_my(pTHX_ OP *o) |
93a17b20 LW |
1565 | { |
1566 | OP *kid; | |
93a17b20 LW |
1567 | I32 type; |
1568 | ||
3280af22 | 1569 | if (!o || PL_error_count) |
11343788 | 1570 | return o; |
93a17b20 | 1571 | |
11343788 | 1572 | type = o->op_type; |
93a17b20 | 1573 | if (type == OP_LIST) { |
11343788 | 1574 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
93a17b20 | 1575 | my(kid); |
dab48698 | 1576 | } else if (type == OP_UNDEF) { |
7766148a | 1577 | return o; |
dab48698 | 1578 | } else if (type != OP_PADSV && |
93a17b20 LW |
1579 | type != OP_PADAV && |
1580 | type != OP_PADHV && | |
1581 | type != OP_PUSHMARK) | |
1582 | { | |
cea2e8a9 | 1583 | yyerror(Perl_form(aTHX_ "Can't declare %s in my", PL_op_desc[o->op_type])); |
11343788 | 1584 | return o; |
93a17b20 | 1585 | } |
11343788 MB |
1586 | o->op_flags |= OPf_MOD; |
1587 | o->op_private |= OPpLVAL_INTRO; | |
1588 | return o; | |
93a17b20 LW |
1589 | } |
1590 | ||
1591 | OP * | |
864dbfa3 | 1592 | Perl_sawparens(pTHX_ OP *o) |
79072805 LW |
1593 | { |
1594 | if (o) | |
1595 | o->op_flags |= OPf_PARENS; | |
1596 | return o; | |
1597 | } | |
1598 | ||
1599 | OP * | |
864dbfa3 | 1600 | Perl_bind_match(pTHX_ I32 type, OP *left, OP *right) |
79072805 | 1601 | { |
d008e5eb | 1602 | dTHR; |
11343788 | 1603 | OP *o; |
79072805 | 1604 | |
599cee73 PM |
1605 | if (ckWARN(WARN_UNSAFE) && |
1606 | (left->op_type == OP_RV2AV || | |
1607 | left->op_type == OP_RV2HV || | |
1608 | left->op_type == OP_PADAV || | |
1609 | left->op_type == OP_PADHV)) { | |
22c35a8c | 1610 | char *desc = PL_op_desc[(right->op_type == OP_SUBST || |
599cee73 PM |
1611 | right->op_type == OP_TRANS) |
1612 | ? right->op_type : OP_MATCH]; | |
1613 | char *sample = ((left->op_type == OP_RV2AV || | |
1614 | left->op_type == OP_PADAV) | |
1615 | ? "@array" : "%hash"); | |
cea2e8a9 | 1616 | Perl_warner(aTHX_ WARN_UNSAFE, |
599cee73 PM |
1617 | "Applying %s to %s will act on scalar(%s)", |
1618 | desc, sample, sample); | |
2ae324a7 | 1619 | } |
1620 | ||
79072805 LW |
1621 | if (right->op_type == OP_MATCH || |
1622 | right->op_type == OP_SUBST || | |
1623 | right->op_type == OP_TRANS) { | |
1624 | right->op_flags |= OPf_STACKED; | |
1625 | if (right->op_type != OP_MATCH) | |
463ee0b2 | 1626 | left = mod(left, right->op_type); |
79072805 | 1627 | if (right->op_type == OP_TRANS) |
11343788 | 1628 | o = newBINOP(OP_NULL, OPf_STACKED, scalar(left), right); |
79072805 | 1629 | else |
11343788 | 1630 | o = prepend_elem(right->op_type, scalar(left), right); |
79072805 | 1631 | if (type == OP_NOT) |
11343788 MB |
1632 | return newUNOP(OP_NOT, 0, scalar(o)); |
1633 | return o; | |
79072805 LW |
1634 | } |
1635 | else | |
1636 | return bind_match(type, left, | |
1637 | pmruntime(newPMOP(OP_MATCH, 0), right, Nullop)); | |
1638 | } | |
1639 | ||
1640 | OP * | |
864dbfa3 | 1641 | Perl_invert(pTHX_ OP *o) |
79072805 | 1642 | { |
11343788 MB |
1643 | if (!o) |
1644 | return o; | |
79072805 | 1645 | /* XXX need to optimize away NOT NOT here? Or do we let optimizer do it? */ |
11343788 | 1646 | return newUNOP(OP_NOT, OPf_SPECIAL, scalar(o)); |
79072805 LW |
1647 | } |
1648 | ||
1649 | OP * | |
864dbfa3 | 1650 | Perl_scope(pTHX_ OP *o) |
79072805 LW |
1651 | { |
1652 | if (o) { | |
3280af22 | 1653 | if (o->op_flags & OPf_PARENS || PERLDB_NOOPT || PL_tainting) { |
463ee0b2 LW |
1654 | o = prepend_elem(OP_LINESEQ, newOP(OP_ENTER, 0), o); |
1655 | o->op_type = OP_LEAVE; | |
22c35a8c | 1656 | o->op_ppaddr = PL_ppaddr[OP_LEAVE]; |
463ee0b2 LW |
1657 | } |
1658 | else { | |
1659 | if (o->op_type == OP_LINESEQ) { | |
1660 | OP *kid; | |
1661 | o->op_type = OP_SCOPE; | |
22c35a8c | 1662 | o->op_ppaddr = PL_ppaddr[OP_SCOPE]; |
463ee0b2 | 1663 | kid = ((LISTOP*)o)->op_first; |
748a9306 LW |
1664 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE){ |
1665 | SvREFCNT_dec(((COP*)kid)->cop_filegv); | |
8990e307 | 1666 | null(kid); |
748a9306 | 1667 | } |
463ee0b2 LW |
1668 | } |
1669 | else | |
748a9306 | 1670 | o = newLISTOP(OP_SCOPE, 0, o, Nullop); |
463ee0b2 | 1671 | } |
79072805 LW |
1672 | } |
1673 | return o; | |
1674 | } | |
1675 | ||
b3ac6de7 | 1676 | void |
864dbfa3 | 1677 | Perl_save_hints(pTHX) |
b3ac6de7 | 1678 | { |
3280af22 NIS |
1679 | SAVEI32(PL_hints); |
1680 | SAVESPTR(GvHV(PL_hintgv)); | |
1681 | GvHV(PL_hintgv) = newHVhv(GvHV(PL_hintgv)); | |
1682 | SAVEFREESV(GvHV(PL_hintgv)); | |
b3ac6de7 IZ |
1683 | } |
1684 | ||
a0d0e21e | 1685 | int |
864dbfa3 | 1686 | Perl_block_start(pTHX_ int full) |
79072805 | 1687 | { |
11343788 | 1688 | dTHR; |
3280af22 | 1689 | int retval = PL_savestack_ix; |
b3ac6de7 | 1690 | |
3280af22 | 1691 | SAVEI32(PL_comppad_name_floor); |
55497cff | 1692 | if (full) { |
3280af22 NIS |
1693 | if ((PL_comppad_name_fill = AvFILLp(PL_comppad_name)) > 0) |
1694 | PL_comppad_name_floor = PL_comppad_name_fill; | |
55497cff | 1695 | else |
3280af22 NIS |
1696 | PL_comppad_name_floor = 0; |
1697 | } | |
1698 | SAVEI32(PL_min_intro_pending); | |
1699 | SAVEI32(PL_max_intro_pending); | |
1700 | PL_min_intro_pending = 0; | |
1701 | SAVEI32(PL_comppad_name_fill); | |
1702 | SAVEI32(PL_padix_floor); | |
1703 | PL_padix_floor = PL_padix; | |
1704 | PL_pad_reset_pending = FALSE; | |
b3ac6de7 | 1705 | SAVEHINTS(); |
3280af22 | 1706 | PL_hints &= ~HINT_BLOCK_SCOPE; |
e24b16f9 | 1707 | SAVEPPTR(PL_compiling.cop_warnings); |
599cee73 PM |
1708 | if (PL_compiling.cop_warnings != WARN_ALL && |
1709 | PL_compiling.cop_warnings != WARN_NONE) { | |
1710 | PL_compiling.cop_warnings = newSVsv(PL_compiling.cop_warnings) ; | |
1711 | SAVEFREESV(PL_compiling.cop_warnings) ; | |
1712 | } | |
1713 | ||
1714 | ||
a0d0e21e LW |
1715 | return retval; |
1716 | } | |
1717 | ||
1718 | OP* | |
864dbfa3 | 1719 | Perl_block_end(pTHX_ I32 floor, OP *seq) |
a0d0e21e | 1720 | { |
11343788 | 1721 | dTHR; |
3280af22 | 1722 | int needblockscope = PL_hints & HINT_BLOCK_SCOPE; |
a0d0e21e | 1723 | OP* retval = scalarseq(seq); |
a0d0e21e | 1724 | LEAVE_SCOPE(floor); |
3280af22 | 1725 | PL_pad_reset_pending = FALSE; |
e24b16f9 | 1726 | PL_compiling.op_private = PL_hints; |
a0d0e21e | 1727 | if (needblockscope) |
3280af22 NIS |
1728 | PL_hints |= HINT_BLOCK_SCOPE; /* propagate out */ |
1729 | pad_leavemy(PL_comppad_name_fill); | |
1730 | PL_cop_seqmax++; | |
a0d0e21e LW |
1731 | return retval; |
1732 | } | |
1733 | ||
76e3520e | 1734 | STATIC OP * |
cea2e8a9 | 1735 | S_newDEFSVOP(pTHX) |
54b9620d MB |
1736 | { |
1737 | #ifdef USE_THREADS | |
1738 | OP *o = newOP(OP_THREADSV, 0); | |
1739 | o->op_targ = find_threadsv("_"); | |
1740 | return o; | |
1741 | #else | |
3280af22 | 1742 | return newSVREF(newGVOP(OP_GV, 0, PL_defgv)); |
54b9620d MB |
1743 | #endif /* USE_THREADS */ |
1744 | } | |
1745 | ||
a0d0e21e | 1746 | void |
864dbfa3 | 1747 | Perl_newPROG(pTHX_ OP *o) |
a0d0e21e | 1748 | { |
11343788 | 1749 | dTHR; |
3280af22 | 1750 | if (PL_in_eval) { |
b295d113 TH |
1751 | if (PL_eval_root) |
1752 | return; | |
faef0170 HS |
1753 | PL_eval_root = newUNOP(OP_LEAVEEVAL, |
1754 | ((PL_in_eval & EVAL_KEEPERR) | |
1755 | ? OPf_SPECIAL : 0), o); | |
3280af22 NIS |
1756 | PL_eval_start = linklist(PL_eval_root); |
1757 | PL_eval_root->op_next = 0; | |
1758 | peep(PL_eval_start); | |
a0d0e21e LW |
1759 | } |
1760 | else { | |
5dc0d613 | 1761 | if (!o) |
a0d0e21e | 1762 | return; |
3280af22 NIS |
1763 | PL_main_root = scope(sawparens(scalarvoid(o))); |
1764 | PL_curcop = &PL_compiling; | |
1765 | PL_main_start = LINKLIST(PL_main_root); | |
1766 | PL_main_root->op_next = 0; | |
1767 | peep(PL_main_start); | |
1768 | PL_compcv = 0; | |
3841441e | 1769 | |
4fdae800 | 1770 | /* Register with debugger */ |
84902520 | 1771 | if (PERLDB_INTER) { |
864dbfa3 | 1772 | CV *cv = get_cv("DB::postponed", FALSE); |
3841441e CS |
1773 | if (cv) { |
1774 | dSP; | |
924508f0 | 1775 | PUSHMARK(SP); |
3280af22 | 1776 | XPUSHs((SV*)PL_compiling.cop_filegv); |
3841441e | 1777 | PUTBACK; |
864dbfa3 | 1778 | call_sv((SV*)cv, G_DISCARD); |
3841441e CS |
1779 | } |
1780 | } | |
79072805 | 1781 | } |
79072805 LW |
1782 | } |
1783 | ||
1784 | OP * | |
864dbfa3 | 1785 | Perl_localize(pTHX_ OP *o, I32 lex) |
79072805 LW |
1786 | { |
1787 | if (o->op_flags & OPf_PARENS) | |
1788 | list(o); | |
8990e307 | 1789 | else { |
d008e5eb | 1790 | dTHR; |
599cee73 | 1791 | if (ckWARN(WARN_PARENTHESIS) && PL_bufptr > PL_oldbufptr && PL_bufptr[-1] == ',') { |
8990e307 | 1792 | char *s; |
834a4ddd | 1793 | for (s = PL_bufptr; *s && (isALNUM(*s) || (*s & 0x80) || strchr("@$%, ",*s)); s++) ; |
a0d0e21e | 1794 | if (*s == ';' || *s == '=') |
cea2e8a9 | 1795 | Perl_warner(aTHX_ WARN_PARENTHESIS, "Parentheses missing around \"%s\" list", |
599cee73 | 1796 | lex ? "my" : "local"); |
8990e307 LW |
1797 | } |
1798 | } | |
3280af22 NIS |
1799 | PL_in_my = FALSE; |
1800 | PL_in_my_stash = Nullhv; | |
93a17b20 LW |
1801 | if (lex) |
1802 | return my(o); | |
1803 | else | |
463ee0b2 | 1804 | return mod(o, OP_NULL); /* a bit kludgey */ |
79072805 LW |
1805 | } |
1806 | ||
1807 | OP * | |
864dbfa3 | 1808 | Perl_jmaybe(pTHX_ OP *o) |
79072805 LW |
1809 | { |
1810 | if (o->op_type == OP_LIST) { | |
554b3eca MB |
1811 | OP *o2; |
1812 | #ifdef USE_THREADS | |
2faa37cc | 1813 | o2 = newOP(OP_THREADSV, 0); |
54b9620d | 1814 | o2->op_targ = find_threadsv(";"); |
554b3eca MB |
1815 | #else |
1816 | o2 = newSVREF(newGVOP(OP_GV, 0, gv_fetchpv(";", TRUE, SVt_PV))), | |
1817 | #endif /* USE_THREADS */ | |
1818 | o = convert(OP_JOIN, 0, prepend_elem(OP_LIST, o2, o)); | |
79072805 LW |
1819 | } |
1820 | return o; | |
1821 | } | |
1822 | ||
1823 | OP * | |
864dbfa3 | 1824 | Perl_fold_constants(pTHX_ register OP *o) |
79072805 | 1825 | { |
11343788 | 1826 | dTHR; |
79072805 LW |
1827 | register OP *curop; |
1828 | I32 type = o->op_type; | |
748a9306 | 1829 | SV *sv; |
79072805 | 1830 | |
22c35a8c | 1831 | if (PL_opargs[type] & OA_RETSCALAR) |
79072805 | 1832 | scalar(o); |
22c35a8c | 1833 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 1834 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 | 1835 | |
22c35a8c GS |
1836 | if ((PL_opargs[type] & OA_OTHERINT) && (PL_hints & HINT_INTEGER)) |
1837 | o->op_ppaddr = PL_ppaddr[type = ++(o->op_type)]; | |
85e6fe83 | 1838 | |
22c35a8c | 1839 | if (!(PL_opargs[type] & OA_FOLDCONST)) |
79072805 LW |
1840 | goto nope; |
1841 | ||
de939608 | 1842 | switch (type) { |
7a52d87a GS |
1843 | case OP_NEGATE: |
1844 | /* XXX might want a ck_negate() for this */ | |
1845 | cUNOPo->op_first->op_private &= ~OPpCONST_STRICT; | |
1846 | break; | |
de939608 CS |
1847 | case OP_SPRINTF: |
1848 | case OP_UCFIRST: | |
1849 | case OP_LCFIRST: | |
1850 | case OP_UC: | |
1851 | case OP_LC: | |
69dcf70c MB |
1852 | case OP_SLT: |
1853 | case OP_SGT: | |
1854 | case OP_SLE: | |
1855 | case OP_SGE: | |
1856 | case OP_SCMP: | |
1857 | ||
de939608 CS |
1858 | if (o->op_private & OPpLOCALE) |
1859 | goto nope; | |
1860 | } | |
1861 | ||
3280af22 | 1862 | if (PL_error_count) |
a0d0e21e LW |
1863 | goto nope; /* Don't try to run w/ errors */ |
1864 | ||
79072805 | 1865 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
93a17b20 | 1866 | if (curop->op_type != OP_CONST && |
7a52d87a GS |
1867 | curop->op_type != OP_LIST && |
1868 | curop->op_type != OP_SCALAR && | |
1869 | curop->op_type != OP_NULL && | |
1870 | curop->op_type != OP_PUSHMARK) | |
1871 | { | |
79072805 LW |
1872 | goto nope; |
1873 | } | |
1874 | } | |
1875 | ||
1876 | curop = LINKLIST(o); | |
1877 | o->op_next = 0; | |
533c011a | 1878 | PL_op = curop; |
cea2e8a9 | 1879 | CALLRUNOPS(aTHX); |
3280af22 | 1880 | sv = *(PL_stack_sp--); |
748a9306 | 1881 | if (o->op_targ && sv == PAD_SV(o->op_targ)) /* grab pad temp? */ |
79072805 | 1882 | pad_swipe(o->op_targ); |
748a9306 LW |
1883 | else if (SvTEMP(sv)) { /* grab mortal temp? */ |
1884 | (void)SvREFCNT_inc(sv); | |
1885 | SvTEMP_off(sv); | |
85e6fe83 | 1886 | } |
79072805 LW |
1887 | op_free(o); |
1888 | if (type == OP_RV2GV) | |
b1cb66bf | 1889 | return newGVOP(OP_GV, 0, (GV*)sv); |
748a9306 | 1890 | else { |
ee580363 GS |
1891 | /* try to smush double to int, but don't smush -2.0 to -2 */ |
1892 | if ((SvFLAGS(sv) & (SVf_IOK|SVf_NOK|SVf_POK)) == SVf_NOK && | |
1893 | type != OP_NEGATE) | |
1894 | { | |
748a9306 | 1895 | IV iv = SvIV(sv); |
ee580363 | 1896 | if ((double)iv == SvNV(sv)) { |
748a9306 LW |
1897 | SvREFCNT_dec(sv); |
1898 | sv = newSViv(iv); | |
1899 | } | |
b1cb66bf | 1900 | else |
1901 | SvIOK_off(sv); /* undo SvIV() damage */ | |
748a9306 LW |
1902 | } |
1903 | return newSVOP(OP_CONST, 0, sv); | |
1904 | } | |
aeea060c | 1905 | |
79072805 | 1906 | nope: |
22c35a8c | 1907 | if (!(PL_opargs[type] & OA_OTHERINT)) |
79072805 | 1908 | return o; |
79072805 | 1909 | |
3280af22 | 1910 | if (!(PL_hints & HINT_INTEGER)) { |
a0d0e21e | 1911 | if (type == OP_DIVIDE || !(o->op_flags & OPf_KIDS)) |
85e6fe83 LW |
1912 | return o; |
1913 | ||
1914 | for (curop = ((UNOP*)o)->op_first; curop; curop = curop->op_sibling) { | |
1915 | if (curop->op_type == OP_CONST) { | |
b1cb66bf | 1916 | if (SvIOK(((SVOP*)curop)->op_sv)) |
85e6fe83 LW |
1917 | continue; |
1918 | return o; | |
1919 | } | |
22c35a8c | 1920 | if (PL_opargs[curop->op_type] & OA_RETINTEGER) |
79072805 LW |
1921 | continue; |
1922 | return o; | |
1923 | } | |
22c35a8c | 1924 | o->op_ppaddr = PL_ppaddr[++(o->op_type)]; |
79072805 LW |
1925 | } |
1926 | ||
79072805 LW |
1927 | return o; |
1928 | } | |
1929 | ||
1930 | OP * | |
864dbfa3 | 1931 | Perl_gen_constant_list(pTHX_ register OP *o) |
79072805 | 1932 | { |
11343788 | 1933 | dTHR; |
79072805 | 1934 | register OP *curop; |
3280af22 | 1935 | I32 oldtmps_floor = PL_tmps_floor; |
79072805 | 1936 | |
a0d0e21e | 1937 | list(o); |
3280af22 | 1938 | if (PL_error_count) |
a0d0e21e LW |
1939 | return o; /* Don't attempt to run with errors */ |
1940 | ||
533c011a | 1941 | PL_op = curop = LINKLIST(o); |
a0d0e21e | 1942 | o->op_next = 0; |
cea2e8a9 GS |
1943 | pp_pushmark(); |
1944 | CALLRUNOPS(aTHX); | |
533c011a | 1945 | PL_op = curop; |
cea2e8a9 | 1946 | pp_anonlist(); |
3280af22 | 1947 | PL_tmps_floor = oldtmps_floor; |
79072805 LW |
1948 | |
1949 | o->op_type = OP_RV2AV; | |
22c35a8c | 1950 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
79072805 | 1951 | curop = ((UNOP*)o)->op_first; |
3280af22 | 1952 | ((UNOP*)o)->op_first = newSVOP(OP_CONST, 0, SvREFCNT_inc(*PL_stack_sp--)); |
79072805 | 1953 | op_free(curop); |
79072805 LW |
1954 | linklist(o); |
1955 | return list(o); | |
1956 | } | |
1957 | ||
1958 | OP * | |
864dbfa3 | 1959 | Perl_convert(pTHX_ I32 type, I32 flags, OP *o) |
79072805 LW |
1960 | { |
1961 | OP *kid; | |
a0d0e21e | 1962 | OP *last = 0; |
79072805 | 1963 | |
11343788 MB |
1964 | if (!o || o->op_type != OP_LIST) |
1965 | o = newLISTOP(OP_LIST, 0, o, Nullop); | |
748a9306 | 1966 | else |
5dc0d613 | 1967 | o->op_flags &= ~OPf_WANT; |
79072805 | 1968 | |
22c35a8c | 1969 | if (!(PL_opargs[type] & OA_MARK)) |
11343788 | 1970 | null(cLISTOPo->op_first); |
8990e307 | 1971 | |
11343788 | 1972 | o->op_type = type; |
22c35a8c | 1973 | o->op_ppaddr = PL_ppaddr[type]; |
11343788 | 1974 | o->op_flags |= flags; |
79072805 | 1975 | |
11343788 MB |
1976 | o = CHECKOP(type, o); |
1977 | if (o->op_type != type) | |
1978 | return o; | |
79072805 | 1979 | |
11343788 | 1980 | if (cLISTOPo->op_children < 7) { |
79072805 | 1981 | /* XXX do we really need to do this if we're done appending?? */ |
11343788 | 1982 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 | 1983 | last = kid; |
11343788 | 1984 | cLISTOPo->op_last = last; /* in case check substituted last arg */ |
79072805 LW |
1985 | } |
1986 | ||
11343788 | 1987 | return fold_constants(o); |
79072805 LW |
1988 | } |
1989 | ||
1990 | /* List constructors */ | |
1991 | ||
1992 | OP * | |
864dbfa3 | 1993 | Perl_append_elem(pTHX_ I32 type, OP *first, OP *last) |
79072805 LW |
1994 | { |
1995 | if (!first) | |
1996 | return last; | |
8990e307 LW |
1997 | |
1998 | if (!last) | |
79072805 | 1999 | return first; |
8990e307 | 2000 | |
a0d0e21e LW |
2001 | if (first->op_type != type || type==OP_LIST && first->op_flags & OPf_PARENS) |
2002 | return newLISTOP(type, 0, first, last); | |
79072805 | 2003 | |
a0d0e21e LW |
2004 | if (first->op_flags & OPf_KIDS) |
2005 | ((LISTOP*)first)->op_last->op_sibling = last; | |
2006 | else { | |
2007 | first->op_flags |= OPf_KIDS; | |
2008 | ((LISTOP*)first)->op_first = last; | |
2009 | } | |
2010 | ((LISTOP*)first)->op_last = last; | |
2011 | ((LISTOP*)first)->op_children++; | |
2012 | return first; | |
79072805 LW |
2013 | } |
2014 | ||
2015 | OP * | |
864dbfa3 | 2016 | Perl_append_list(pTHX_ I32 type, LISTOP *first, LISTOP *last) |
79072805 LW |
2017 | { |
2018 | if (!first) | |
2019 | return (OP*)last; | |
8990e307 LW |
2020 | |
2021 | if (!last) | |
79072805 | 2022 | return (OP*)first; |
8990e307 LW |
2023 | |
2024 | if (first->op_type != type) | |
79072805 | 2025 | return prepend_elem(type, (OP*)first, (OP*)last); |
8990e307 LW |
2026 | |
2027 | if (last->op_type != type) | |
79072805 LW |
2028 | return append_elem(type, (OP*)first, (OP*)last); |
2029 | ||
2030 | first->op_last->op_sibling = last->op_first; | |
2031 | first->op_last = last->op_last; | |
2032 | first->op_children += last->op_children; | |
2033 | if (first->op_children) | |
acb74605 | 2034 | first->op_flags |= OPf_KIDS; |
b7dc083c NIS |
2035 | |
2036 | #ifdef PL_OP_SLAB_ALLOC | |
2037 | #else | |
2038 | Safefree(last); | |
2039 | #endif | |
79072805 LW |
2040 | return (OP*)first; |
2041 | } | |
2042 | ||
2043 | OP * | |
864dbfa3 | 2044 | Perl_prepend_elem(pTHX_ I32 type, OP *first, OP *last) |
79072805 LW |
2045 | { |
2046 | if (!first) | |
2047 | return last; | |
8990e307 LW |
2048 | |
2049 | if (!last) | |
79072805 | 2050 | return first; |
8990e307 LW |
2051 | |
2052 | if (last->op_type == type) { | |
2053 | if (type == OP_LIST) { /* already a PUSHMARK there */ | |
2054 | first->op_sibling = ((LISTOP*)last)->op_first->op_sibling; | |
2055 | ((LISTOP*)last)->op_first->op_sibling = first; | |
2056 | } | |
2057 | else { | |
2058 | if (!(last->op_flags & OPf_KIDS)) { | |
2059 | ((LISTOP*)last)->op_last = first; | |
2060 | last->op_flags |= OPf_KIDS; | |
2061 | } | |
2062 | first->op_sibling = ((LISTOP*)last)->op_first; | |
2063 | ((LISTOP*)last)->op_first = first; | |
79072805 | 2064 | } |
79072805 LW |
2065 | ((LISTOP*)last)->op_children++; |
2066 | return last; | |
2067 | } | |
2068 | ||
2069 | return newLISTOP(type, 0, first, last); | |
2070 | } | |
2071 | ||
2072 | /* Constructors */ | |
2073 | ||
2074 | OP * | |
864dbfa3 | 2075 | Perl_newNULLLIST(pTHX) |
79072805 | 2076 | { |
8990e307 LW |
2077 | return newOP(OP_STUB, 0); |
2078 | } | |
2079 | ||
2080 | OP * | |
864dbfa3 | 2081 | Perl_force_list(pTHX_ OP *o) |
8990e307 | 2082 | { |
11343788 MB |
2083 | if (!o || o->op_type != OP_LIST) |
2084 | o = newLISTOP(OP_LIST, 0, o, Nullop); | |
2085 | null(o); | |
2086 | return o; | |
79072805 LW |
2087 | } |
2088 | ||
2089 | OP * | |
864dbfa3 | 2090 | Perl_newLISTOP(pTHX_ I32 type, I32 flags, OP *first, OP *last) |
79072805 LW |
2091 | { |
2092 | LISTOP *listop; | |
2093 | ||
b7dc083c | 2094 | NewOp(1101, listop, 1, LISTOP); |
79072805 LW |
2095 | |
2096 | listop->op_type = type; | |
22c35a8c | 2097 | listop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2098 | listop->op_children = (first != 0) + (last != 0); |
2099 | listop->op_flags = flags; | |
79072805 LW |
2100 | |
2101 | if (!last && first) | |
2102 | last = first; | |
2103 | else if (!first && last) | |
2104 | first = last; | |
8990e307 LW |
2105 | else if (first) |
2106 | first->op_sibling = last; | |
79072805 LW |
2107 | listop->op_first = first; |
2108 | listop->op_last = last; | |
8990e307 LW |
2109 | if (type == OP_LIST) { |
2110 | OP* pushop; | |
2111 | pushop = newOP(OP_PUSHMARK, 0); | |
2112 | pushop->op_sibling = first; | |
2113 | listop->op_first = pushop; | |
2114 | listop->op_flags |= OPf_KIDS; | |
2115 | if (!last) | |
2116 | listop->op_last = pushop; | |
2117 | } | |
2118 | else if (listop->op_children) | |
2119 | listop->op_flags |= OPf_KIDS; | |
79072805 LW |
2120 | |
2121 | return (OP*)listop; | |
2122 | } | |
2123 | ||
2124 | OP * | |
864dbfa3 | 2125 | Perl_newOP(pTHX_ I32 type, I32 flags) |
79072805 | 2126 | { |
11343788 | 2127 | OP *o; |
b7dc083c | 2128 | NewOp(1101, o, 1, OP); |
11343788 | 2129 | o->op_type = type; |
22c35a8c | 2130 | o->op_ppaddr = PL_ppaddr[type]; |
11343788 | 2131 | o->op_flags = flags; |
79072805 | 2132 | |
11343788 MB |
2133 | o->op_next = o; |
2134 | o->op_private = 0 + (flags >> 8); | |
22c35a8c | 2135 | if (PL_opargs[type] & OA_RETSCALAR) |
11343788 | 2136 | scalar(o); |
22c35a8c | 2137 | if (PL_opargs[type] & OA_TARGET) |
11343788 MB |
2138 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
2139 | return CHECKOP(type, o); | |
79072805 LW |
2140 | } |
2141 | ||
2142 | OP * | |
864dbfa3 | 2143 | Perl_newUNOP(pTHX_ I32 type, I32 flags, OP *first) |
79072805 LW |
2144 | { |
2145 | UNOP *unop; | |
2146 | ||
93a17b20 | 2147 | if (!first) |
aeea060c | 2148 | first = newOP(OP_STUB, 0); |
22c35a8c | 2149 | if (PL_opargs[type] & OA_MARK) |
8990e307 | 2150 | first = force_list(first); |
93a17b20 | 2151 | |
b7dc083c | 2152 | NewOp(1101, unop, 1, UNOP); |
79072805 | 2153 | unop->op_type = type; |
22c35a8c | 2154 | unop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2155 | unop->op_first = first; |
2156 | unop->op_flags = flags | OPf_KIDS; | |
c07a80fd | 2157 | unop->op_private = 1 | (flags >> 8); |
e50aee73 | 2158 | unop = (UNOP*) CHECKOP(type, unop); |
79072805 LW |
2159 | if (unop->op_next) |
2160 | return (OP*)unop; | |
2161 | ||
a0d0e21e | 2162 | return fold_constants((OP *) unop); |
79072805 LW |
2163 | } |
2164 | ||
2165 | OP * | |
864dbfa3 | 2166 | Perl_newBINOP(pTHX_ I32 type, I32 flags, OP *first, OP *last) |
79072805 LW |
2167 | { |
2168 | BINOP *binop; | |
b7dc083c | 2169 | NewOp(1101, binop, 1, BINOP); |
79072805 LW |
2170 | |
2171 | if (!first) | |
2172 | first = newOP(OP_NULL, 0); | |
2173 | ||
2174 | binop->op_type = type; | |
22c35a8c | 2175 | binop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2176 | binop->op_first = first; |
2177 | binop->op_flags = flags | OPf_KIDS; | |
2178 | if (!last) { | |
2179 | last = first; | |
c07a80fd | 2180 | binop->op_private = 1 | (flags >> 8); |
79072805 LW |
2181 | } |
2182 | else { | |
c07a80fd | 2183 | binop->op_private = 2 | (flags >> 8); |
79072805 LW |
2184 | first->op_sibling = last; |
2185 | } | |
2186 | ||
e50aee73 | 2187 | binop = (BINOP*)CHECKOP(type, binop); |
79072805 LW |
2188 | if (binop->op_next) |
2189 | return (OP*)binop; | |
2190 | ||
7284ab6f | 2191 | binop->op_last = binop->op_first->op_sibling; |
79072805 | 2192 | |
a0d0e21e | 2193 | return fold_constants((OP *)binop); |
79072805 LW |
2194 | } |
2195 | ||
a0ed51b3 LW |
2196 | static int |
2197 | utf8compare(const void *a, const void *b) | |
2198 | { | |
2199 | int i; | |
2200 | for (i = 0; i < 10; i++) { | |
2201 | if ((*(U8**)a)[i] < (*(U8**)b)[i]) | |
2202 | return -1; | |
2203 | if ((*(U8**)a)[i] > (*(U8**)b)[i]) | |
2204 | return 1; | |
2205 | } | |
2206 | return 0; | |
2207 | } | |
2208 | ||
79072805 | 2209 | OP * |
864dbfa3 | 2210 | Perl_pmtrans(pTHX_ OP *o, OP *expr, OP *repl) |
79072805 | 2211 | { |
79072805 LW |
2212 | SV *tstr = ((SVOP*)expr)->op_sv; |
2213 | SV *rstr = ((SVOP*)repl)->op_sv; | |
463ee0b2 LW |
2214 | STRLEN tlen; |
2215 | STRLEN rlen; | |
ec49126f | 2216 | register U8 *t = (U8*)SvPV(tstr, tlen); |
2217 | register U8 *r = (U8*)SvPV(rstr, rlen); | |
79072805 LW |
2218 | register I32 i; |
2219 | register I32 j; | |
a0ed51b3 | 2220 | I32 del; |
79072805 | 2221 | I32 complement; |
5d06d08e | 2222 | I32 squash; |
79072805 LW |
2223 | register short *tbl; |
2224 | ||
11343788 | 2225 | complement = o->op_private & OPpTRANS_COMPLEMENT; |
a0ed51b3 | 2226 | del = o->op_private & OPpTRANS_DELETE; |
5d06d08e | 2227 | squash = o->op_private & OPpTRANS_SQUASH; |
79072805 | 2228 | |
a0ed51b3 | 2229 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { |
79cb57f6 | 2230 | SV* listsv = newSVpvn("# comment\n",10); |
a0ed51b3 LW |
2231 | SV* transv = 0; |
2232 | U8* tend = t + tlen; | |
2233 | U8* rend = r + rlen; | |
2234 | I32 ulen; | |
2235 | U32 tfirst = 1; | |
2236 | U32 tlast = 0; | |
2237 | I32 tdiff; | |
2238 | U32 rfirst = 1; | |
2239 | U32 rlast = 0; | |
2240 | I32 rdiff; | |
2241 | I32 diff; | |
2242 | I32 none = 0; | |
2243 | U32 max = 0; | |
2244 | I32 bits; | |
2245 | I32 grows = 0; | |
2246 | I32 havefinal = 0; | |
2247 | U32 final; | |
2248 | HV *hv; | |
2249 | I32 from_utf = o->op_private & OPpTRANS_FROM_UTF; | |
2250 | I32 to_utf = o->op_private & OPpTRANS_TO_UTF; | |
2251 | ||
2252 | if (complement) { | |
2253 | U8 tmpbuf[10]; | |
2254 | U8** cp; | |
2255 | UV nextmin = 0; | |
2256 | New(1109, cp, tlen, U8*); | |
2257 | i = 0; | |
79cb57f6 | 2258 | transv = newSVpvn("",0); |
a0ed51b3 LW |
2259 | while (t < tend) { |
2260 | cp[i++] = t; | |
2261 | t += UTF8SKIP(t); | |
2262 | if (*t == 0xff) { | |
2263 | t++; | |
2264 | t += UTF8SKIP(t); | |
2265 | } | |
2266 | } | |
2267 | qsort(cp, i, sizeof(U8*), utf8compare); | |
2268 | for (j = 0; j < i; j++) { | |
2269 | U8 *s = cp[j]; | |
2270 | UV val = utf8_to_uv(s, &ulen); | |
2271 | s += ulen; | |
2272 | diff = val - nextmin; | |
2273 | if (diff > 0) { | |
2274 | t = uv_to_utf8(tmpbuf,nextmin); | |
dfe13c55 | 2275 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 LW |
2276 | if (diff > 1) { |
2277 | t = uv_to_utf8(tmpbuf, val - 1); | |
2278 | sv_catpvn(transv, "\377", 1); | |
dfe13c55 | 2279 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 LW |
2280 | } |
2281 | } | |
2282 | if (*s == 0xff) | |
2283 | val = utf8_to_uv(s+1, &ulen); | |
2284 | if (val >= nextmin) | |
2285 | nextmin = val + 1; | |
2286 | } | |
2287 | t = uv_to_utf8(tmpbuf,nextmin); | |
dfe13c55 | 2288 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 LW |
2289 | t = uv_to_utf8(tmpbuf, 0x7fffffff); |
2290 | sv_catpvn(transv, "\377", 1); | |
dfe13c55 GS |
2291 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
2292 | t = (U8*)SvPVX(transv); | |
a0ed51b3 LW |
2293 | tlen = SvCUR(transv); |
2294 | tend = t + tlen; | |
2295 | } | |
2296 | else if (!rlen && !del) { | |
2297 | r = t; rlen = tlen; rend = tend; | |
4757a243 LW |
2298 | } |
2299 | if (!squash) { | |
2300 | if (to_utf && from_utf) { /* only counting characters */ | |
2301 | if (t == r || (tlen == rlen && memEQ(t, r, tlen))) | |
2302 | o->op_private |= OPpTRANS_IDENTICAL; | |
2303 | } | |
2304 | else { /* straight latin-1 translation */ | |
2305 | if (tlen == 4 && memEQ(t, "\0\377\303\277", 4) && | |
2306 | rlen == 4 && memEQ(r, "\0\377\303\277", 4)) | |
2307 | o->op_private |= OPpTRANS_IDENTICAL; | |
2308 | } | |
a0ed51b3 LW |
2309 | } |
2310 | ||
2311 | while (t < tend || tfirst <= tlast) { | |
2312 | /* see if we need more "t" chars */ | |
2313 | if (tfirst > tlast) { | |
2314 | tfirst = (I32)utf8_to_uv(t, &ulen); | |
2315 | t += ulen; | |
2316 | if (t < tend && *t == 0xff) { /* illegal utf8 val indicates range */ | |
2317 | tlast = (I32)utf8_to_uv(++t, &ulen); | |
2318 | t += ulen; | |
2319 | } | |
2320 | else | |
2321 | tlast = tfirst; | |
2322 | } | |
2323 | ||
2324 | /* now see if we need more "r" chars */ | |
2325 | if (rfirst > rlast) { | |
2326 | if (r < rend) { | |
2327 | rfirst = (I32)utf8_to_uv(r, &ulen); | |
2328 | r += ulen; | |
2329 | if (r < rend && *r == 0xff) { /* illegal utf8 val indicates range */ | |
2330 | rlast = (I32)utf8_to_uv(++r, &ulen); | |
2331 | r += ulen; | |
2332 | } | |
2333 | else | |
2334 | rlast = rfirst; | |
2335 | } | |
2336 | else { | |
2337 | if (!havefinal++) | |
2338 | final = rlast; | |
2339 | rfirst = rlast = 0xffffffff; | |
2340 | } | |
2341 | } | |
2342 | ||
2343 | /* now see which range will peter our first, if either. */ | |
2344 | tdiff = tlast - tfirst; | |
2345 | rdiff = rlast - rfirst; | |
2346 | ||
2347 | if (tdiff <= rdiff) | |
2348 | diff = tdiff; | |
2349 | else | |
2350 | diff = rdiff; | |
2351 | ||
2352 | if (rfirst == 0xffffffff) { | |
2353 | diff = tdiff; /* oops, pretend rdiff is infinite */ | |
2354 | if (diff > 0) | |
cea2e8a9 | 2355 | Perl_sv_catpvf(aTHX_ listsv, "%04x\t%04x\tXXXX\n", tfirst, tlast); |
a0ed51b3 | 2356 | else |
cea2e8a9 | 2357 | Perl_sv_catpvf(aTHX_ listsv, "%04x\t\tXXXX\n", tfirst); |
a0ed51b3 LW |
2358 | } |
2359 | else { | |
2360 | if (diff > 0) | |
cea2e8a9 | 2361 | Perl_sv_catpvf(aTHX_ listsv, "%04x\t%04x\t%04x\n", tfirst, tfirst + diff, rfirst); |
a0ed51b3 | 2362 | else |
cea2e8a9 | 2363 | Perl_sv_catpvf(aTHX_ listsv, "%04x\t\t%04x\n", tfirst, rfirst); |
a0ed51b3 LW |
2364 | |
2365 | if (rfirst + diff > max) | |
2366 | max = rfirst + diff; | |
2367 | rfirst += diff + 1; | |
2368 | if (!grows) { | |
2369 | if (rfirst <= 0x80) | |
2370 | ; | |
2371 | else if (rfirst <= 0x800) | |
2372 | grows |= (tfirst < 0x80); | |
2373 | else if (rfirst <= 0x10000) | |
2374 | grows |= (tfirst < 0x800); | |
2375 | else if (rfirst <= 0x200000) | |
2376 | grows |= (tfirst < 0x10000); | |
2377 | else if (rfirst <= 0x4000000) | |
2378 | grows |= (tfirst < 0x200000); | |
2379 | else if (rfirst <= 0x80000000) | |
2380 | grows |= (tfirst < 0x4000000); | |
2381 | } | |
2382 | } | |
2383 | tfirst += diff + 1; | |
2384 | } | |
2385 | ||
2386 | none = ++max; | |
2387 | if (del) | |
2388 | del = ++max; | |
2389 | ||
2390 | if (max > 0xffff) | |
2391 | bits = 32; | |
2392 | else if (max > 0xff) | |
2393 | bits = 16; | |
2394 | else | |
2395 | bits = 8; | |
2396 | ||
2397 | cSVOPo->op_sv = (SV*)swash_init("utf8", "", listsv, bits, none); | |
2398 | SvREFCNT_dec(listsv); | |
2399 | if (transv) | |
2400 | SvREFCNT_dec(transv); | |
2401 | ||
2402 | if (!del && havefinal) | |
2403 | (void)hv_store((HV*)SvRV((cSVOPo->op_sv)), "FINAL", 5, newSViv((IV)final), 0); | |
2404 | ||
2405 | if (grows && to_utf) | |
2406 | o->op_private |= OPpTRANS_GROWS; | |
2407 | ||
2408 | op_free(expr); | |
2409 | op_free(repl); | |
2410 | return o; | |
2411 | } | |
2412 | ||
2413 | tbl = (short*)cPVOPo->op_pv; | |
79072805 LW |
2414 | if (complement) { |
2415 | Zero(tbl, 256, short); | |
2416 | for (i = 0; i < tlen; i++) | |
ec49126f | 2417 | tbl[t[i]] = -1; |
79072805 LW |
2418 | for (i = 0, j = 0; i < 256; i++) { |
2419 | if (!tbl[i]) { | |
2420 | if (j >= rlen) { | |
a0ed51b3 | 2421 | if (del) |
79072805 LW |
2422 | tbl[i] = -2; |
2423 | else if (rlen) | |
ec49126f | 2424 | tbl[i] = r[j-1]; |
79072805 LW |
2425 | else |
2426 | tbl[i] = i; | |
2427 | } | |
2428 | else | |
ec49126f | 2429 | tbl[i] = r[j++]; |
79072805 LW |
2430 | } |
2431 | } | |
2432 | } | |
2433 | else { | |
a0ed51b3 | 2434 | if (!rlen && !del) { |
79072805 | 2435 | r = t; rlen = tlen; |
5d06d08e | 2436 | if (!squash) |
4757a243 | 2437 | o->op_private |= OPpTRANS_IDENTICAL; |
79072805 LW |
2438 | } |
2439 | for (i = 0; i < 256; i++) | |
2440 | tbl[i] = -1; | |
2441 | for (i = 0, j = 0; i < tlen; i++,j++) { | |
2442 | if (j >= rlen) { | |
a0ed51b3 | 2443 | if (del) { |
ec49126f | 2444 | if (tbl[t[i]] == -1) |
2445 | tbl[t[i]] = -2; | |
79072805 LW |
2446 | continue; |
2447 | } | |
2448 | --j; | |
2449 | } | |
ec49126f | 2450 | if (tbl[t[i]] == -1) |
2451 | tbl[t[i]] = r[j]; | |
79072805 LW |
2452 | } |
2453 | } | |
2454 | op_free(expr); | |
2455 | op_free(repl); | |
2456 | ||
11343788 | 2457 | return o; |
79072805 LW |
2458 | } |
2459 | ||
2460 | OP * | |
864dbfa3 | 2461 | Perl_newPMOP(pTHX_ I32 type, I32 flags) |
79072805 | 2462 | { |
11343788 | 2463 | dTHR; |
79072805 LW |
2464 | PMOP *pmop; |
2465 | ||
b7dc083c | 2466 | NewOp(1101, pmop, 1, PMOP); |
79072805 | 2467 | pmop->op_type = type; |
22c35a8c | 2468 | pmop->op_ppaddr = PL_ppaddr[type]; |
79072805 | 2469 | pmop->op_flags = flags; |
c07a80fd | 2470 | pmop->op_private = 0 | (flags >> 8); |
79072805 | 2471 | |
3280af22 | 2472 | if (PL_hints & HINT_RE_TAINT) |
b3eb6a9b | 2473 | pmop->op_pmpermflags |= PMf_RETAINT; |
3280af22 | 2474 | if (PL_hints & HINT_LOCALE) |
b3eb6a9b GS |
2475 | pmop->op_pmpermflags |= PMf_LOCALE; |
2476 | pmop->op_pmflags = pmop->op_pmpermflags; | |
36477c24 | 2477 | |
79072805 | 2478 | /* link into pm list */ |
3280af22 NIS |
2479 | if (type != OP_TRANS && PL_curstash) { |
2480 | pmop->op_pmnext = HvPMROOT(PL_curstash); | |
2481 | HvPMROOT(PL_curstash) = pmop; | |
79072805 LW |
2482 | } |
2483 | ||
2484 | return (OP*)pmop; | |
2485 | } | |
2486 | ||
2487 | OP * | |
864dbfa3 | 2488 | Perl_pmruntime(pTHX_ OP *o, OP *expr, OP *repl) |
79072805 | 2489 | { |
5c0ca799 | 2490 | dTHR; |
79072805 LW |
2491 | PMOP *pm; |
2492 | LOGOP *rcop; | |
ce862d02 | 2493 | I32 repl_has_vars = 0; |
79072805 | 2494 | |
11343788 MB |
2495 | if (o->op_type == OP_TRANS) |
2496 | return pmtrans(o, expr, repl); | |
79072805 | 2497 | |
3280af22 | 2498 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 2499 | pm = (PMOP*)o; |
79072805 LW |
2500 | |
2501 | if (expr->op_type == OP_CONST) { | |
463ee0b2 | 2502 | STRLEN plen; |
79072805 | 2503 | SV *pat = ((SVOP*)expr)->op_sv; |
463ee0b2 | 2504 | char *p = SvPV(pat, plen); |
11343788 | 2505 | if ((o->op_flags & OPf_SPECIAL) && strEQ(p, " ")) { |
93a17b20 | 2506 | sv_setpvn(pat, "\\s+", 3); |
463ee0b2 | 2507 | p = SvPV(pat, plen); |
79072805 LW |
2508 | pm->op_pmflags |= PMf_SKIPWHITE; |
2509 | } | |
cea2e8a9 | 2510 | pm->op_pmregexp = CALLREGCOMP(aTHX_ p, p + plen, pm); |
aeea060c | 2511 | if (strEQ("\\s+", pm->op_pmregexp->precomp)) |
85e6fe83 | 2512 | pm->op_pmflags |= PMf_WHITE; |
79072805 LW |
2513 | op_free(expr); |
2514 | } | |
2515 | else { | |
3280af22 NIS |
2516 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) |
2517 | expr = newUNOP((!(PL_hints & HINT_RE_EVAL) | |
2cd61cdb IZ |
2518 | ? OP_REGCRESET |
2519 | : OP_REGCMAYBE),0,expr); | |
463ee0b2 | 2520 | |
b7dc083c | 2521 | NewOp(1101, rcop, 1, LOGOP); |
79072805 | 2522 | rcop->op_type = OP_REGCOMP; |
22c35a8c | 2523 | rcop->op_ppaddr = PL_ppaddr[OP_REGCOMP]; |
79072805 | 2524 | rcop->op_first = scalar(expr); |
3280af22 | 2525 | rcop->op_flags |= ((PL_hints & HINT_RE_EVAL) |
2cd61cdb IZ |
2526 | ? (OPf_SPECIAL | OPf_KIDS) |
2527 | : OPf_KIDS); | |
79072805 | 2528 | rcop->op_private = 1; |
11343788 | 2529 | rcop->op_other = o; |
79072805 LW |
2530 | |
2531 | /* establish postfix order */ | |
3280af22 | 2532 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) { |
463ee0b2 LW |
2533 | LINKLIST(expr); |
2534 | rcop->op_next = expr; | |
2535 | ((UNOP*)expr)->op_first->op_next = (OP*)rcop; | |
2536 | } | |
2537 | else { | |
2538 | rcop->op_next = LINKLIST(expr); | |
2539 | expr->op_next = (OP*)rcop; | |
2540 | } | |
79072805 | 2541 | |
11343788 | 2542 | prepend_elem(o->op_type, scalar((OP*)rcop), o); |
79072805 LW |
2543 | } |
2544 | ||
2545 | if (repl) { | |
748a9306 | 2546 | OP *curop; |
0244c3a4 | 2547 | if (pm->op_pmflags & PMf_EVAL) { |
748a9306 | 2548 | curop = 0; |
0244c3a4 GS |
2549 | if (PL_curcop->cop_line < PL_multi_end) |
2550 | PL_curcop->cop_line = PL_multi_end; | |
2551 | } | |
554b3eca | 2552 | #ifdef USE_THREADS |
2faa37cc | 2553 | else if (repl->op_type == OP_THREADSV |
554b3eca | 2554 | && strchr("&`'123456789+", |
533c011a | 2555 | PL_threadsv_names[repl->op_targ])) |
554b3eca MB |
2556 | { |
2557 | curop = 0; | |
2558 | } | |
2559 | #endif /* USE_THREADS */ | |
748a9306 LW |
2560 | else if (repl->op_type == OP_CONST) |
2561 | curop = repl; | |
79072805 | 2562 | else { |
79072805 LW |
2563 | OP *lastop = 0; |
2564 | for (curop = LINKLIST(repl); curop!=repl; curop = LINKLIST(curop)) { | |
22c35a8c | 2565 | if (PL_opargs[curop->op_type] & OA_DANGEROUS) { |
554b3eca | 2566 | #ifdef USE_THREADS |
ce862d02 IZ |
2567 | if (curop->op_type == OP_THREADSV) { |
2568 | repl_has_vars = 1; | |
be949f6f | 2569 | if (strchr("&`'123456789+", curop->op_private)) |
ce862d02 | 2570 | break; |
554b3eca MB |
2571 | } |
2572 | #else | |
79072805 LW |
2573 | if (curop->op_type == OP_GV) { |
2574 | GV *gv = ((GVOP*)curop)->op_gv; | |
ce862d02 | 2575 | repl_has_vars = 1; |
93a17b20 | 2576 | if (strchr("&`'123456789+", *GvENAME(gv))) |
79072805 LW |
2577 | break; |
2578 | } | |
554b3eca | 2579 | #endif /* USE_THREADS */ |
79072805 LW |
2580 | else if (curop->op_type == OP_RV2CV) |
2581 | break; | |
2582 | else if (curop->op_type == OP_RV2SV || | |
2583 | curop->op_type == OP_RV2AV || | |
2584 | curop->op_type == OP_RV2HV || | |
2585 | curop->op_type == OP_RV2GV) { | |
2586 | if (lastop && lastop->op_type != OP_GV) /*funny deref?*/ | |
2587 | break; | |
2588 | } | |
748a9306 LW |
2589 | else if (curop->op_type == OP_PADSV || |
2590 | curop->op_type == OP_PADAV || | |
2591 | curop->op_type == OP_PADHV || | |
554b3eca | 2592 | curop->op_type == OP_PADANY) { |
ce862d02 | 2593 | repl_has_vars = 1; |
748a9306 | 2594 | } |
1167e5da SM |
2595 | else if (curop->op_type == OP_PUSHRE) |
2596 | ; /* Okay here, dangerous in newASSIGNOP */ | |
79072805 LW |
2597 | else |
2598 | break; | |
2599 | } | |
2600 | lastop = curop; | |
2601 | } | |
748a9306 | 2602 | } |
ce862d02 IZ |
2603 | if (curop == repl |
2604 | && !(repl_has_vars | |
2605 | && (!pm->op_pmregexp | |
2606 | || pm->op_pmregexp->reganch & ROPT_EVAL_SEEN))) { | |
748a9306 | 2607 | pm->op_pmflags |= PMf_CONST; /* const for long enough */ |
4633a7c4 | 2608 | pm->op_pmpermflags |= PMf_CONST; /* const for long enough */ |
11343788 | 2609 | prepend_elem(o->op_type, scalar(repl), o); |
748a9306 LW |
2610 | } |
2611 | else { | |
ce862d02 IZ |
2612 | if (curop == repl && !pm->op_pmregexp) { /* Has variables. */ |
2613 | pm->op_pmflags |= PMf_MAYBE_CONST; | |
2614 | pm->op_pmpermflags |= PMf_MAYBE_CONST; | |
2615 | } | |
b7dc083c | 2616 | NewOp(1101, rcop, 1, LOGOP); |
748a9306 | 2617 | rcop->op_type = OP_SUBSTCONT; |
22c35a8c | 2618 | rcop->op_ppaddr = PL_ppaddr[OP_SUBSTCONT]; |
748a9306 LW |
2619 | rcop->op_first = scalar(repl); |
2620 | rcop->op_flags |= OPf_KIDS; | |
2621 | rcop->op_private = 1; | |
11343788 | 2622 | rcop->op_other = o; |
748a9306 LW |
2623 | |
2624 | /* establish postfix order */ | |
2625 | rcop->op_next = LINKLIST(repl); | |
2626 | repl->op_next = (OP*)rcop; | |
2627 | ||
2628 | pm->op_pmreplroot = scalar((OP*)rcop); | |
2629 | pm->op_pmreplstart = LINKLIST(rcop); | |
2630 | rcop->op_next = 0; | |
79072805 LW |
2631 | } |
2632 | } | |
2633 | ||
2634 | return (OP*)pm; | |
2635 | } | |
2636 | ||
2637 | OP * | |
864dbfa3 | 2638 | Perl_newSVOP(pTHX_ I32 type, I32 flags, SV *sv) |
79072805 LW |
2639 | { |
2640 | SVOP *svop; | |
b7dc083c | 2641 | NewOp(1101, svop, 1, SVOP); |
79072805 | 2642 | svop->op_type = type; |
22c35a8c | 2643 | svop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2644 | svop->op_sv = sv; |
2645 | svop->op_next = (OP*)svop; | |
2646 | svop->op_flags = flags; | |
22c35a8c | 2647 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 2648 | scalar((OP*)svop); |
22c35a8c | 2649 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 2650 | svop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2651 | return CHECKOP(type, svop); |
79072805 LW |
2652 | } |
2653 | ||
2654 | OP * | |
864dbfa3 | 2655 | Perl_newGVOP(pTHX_ I32 type, I32 flags, GV *gv) |
79072805 | 2656 | { |
11343788 | 2657 | dTHR; |
79072805 | 2658 | GVOP *gvop; |
b7dc083c | 2659 | NewOp(1101, gvop, 1, GVOP); |
79072805 | 2660 | gvop->op_type = type; |
22c35a8c | 2661 | gvop->op_ppaddr = PL_ppaddr[type]; |
8990e307 | 2662 | gvop->op_gv = (GV*)SvREFCNT_inc(gv); |
79072805 LW |
2663 | gvop->op_next = (OP*)gvop; |
2664 | gvop->op_flags = flags; | |
22c35a8c | 2665 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 2666 | scalar((OP*)gvop); |
22c35a8c | 2667 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 2668 | gvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2669 | return CHECKOP(type, gvop); |
79072805 LW |
2670 | } |
2671 | ||
2672 | OP * | |
864dbfa3 | 2673 | Perl_newPVOP(pTHX_ I32 type, I32 flags, char *pv) |
79072805 LW |
2674 | { |
2675 | PVOP *pvop; | |
b7dc083c | 2676 | NewOp(1101, pvop, 1, PVOP); |
79072805 | 2677 | pvop->op_type = type; |
22c35a8c | 2678 | pvop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2679 | pvop->op_pv = pv; |
2680 | pvop->op_next = (OP*)pvop; | |
2681 | pvop->op_flags = flags; | |
22c35a8c | 2682 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 2683 | scalar((OP*)pvop); |
22c35a8c | 2684 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 2685 | pvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2686 | return CHECKOP(type, pvop); |
79072805 LW |
2687 | } |
2688 | ||
79072805 | 2689 | void |
864dbfa3 | 2690 | Perl_package(pTHX_ OP *o) |
79072805 | 2691 | { |
11343788 | 2692 | dTHR; |
93a17b20 | 2693 | SV *sv; |
79072805 | 2694 | |
3280af22 NIS |
2695 | save_hptr(&PL_curstash); |
2696 | save_item(PL_curstname); | |
11343788 | 2697 | if (o) { |
463ee0b2 LW |
2698 | STRLEN len; |
2699 | char *name; | |
11343788 | 2700 | sv = cSVOPo->op_sv; |
463ee0b2 | 2701 | name = SvPV(sv, len); |
3280af22 NIS |
2702 | PL_curstash = gv_stashpvn(name,len,TRUE); |
2703 | sv_setpvn(PL_curstname, name, len); | |
11343788 | 2704 | op_free(o); |
93a17b20 LW |
2705 | } |
2706 | else { | |
3280af22 NIS |
2707 | sv_setpv(PL_curstname,"<none>"); |
2708 | PL_curstash = Nullhv; | |
93a17b20 | 2709 | } |
7ad382f4 | 2710 | PL_hints |= HINT_BLOCK_SCOPE; |
3280af22 NIS |
2711 | PL_copline = NOLINE; |
2712 | PL_expect = XSTATE; | |
79072805 LW |
2713 | } |
2714 | ||
85e6fe83 | 2715 | void |
864dbfa3 | 2716 | Perl_utilize(pTHX_ int aver, I32 floor, OP *version, OP *id, OP *arg) |
85e6fe83 | 2717 | { |
a0d0e21e LW |
2718 | OP *pack; |
2719 | OP *meth; | |
2720 | OP *rqop; | |
2721 | OP *imop; | |
b1cb66bf | 2722 | OP *veop; |
78ca652e | 2723 | GV *gv; |
85e6fe83 | 2724 | |
a0d0e21e | 2725 | if (id->op_type != OP_CONST) |
cea2e8a9 | 2726 | Perl_croak(aTHX_ "Module name must be constant"); |
85e6fe83 | 2727 | |
b1cb66bf | 2728 | veop = Nullop; |
2729 | ||
2730 | if(version != Nullop) { | |
2731 | SV *vesv = ((SVOP*)version)->op_sv; | |
2732 | ||
2733 | if (arg == Nullop && !SvNIOK(vesv)) { | |
2734 | arg = version; | |
2735 | } | |
2736 | else { | |
2737 | OP *pack; | |
2738 | OP *meth; | |
2739 | ||
2740 | if (version->op_type != OP_CONST || !SvNIOK(vesv)) | |
cea2e8a9 | 2741 | Perl_croak(aTHX_ "Version number must be constant number"); |
b1cb66bf | 2742 | |
2743 | /* Make copy of id so we don't free it twice */ | |
2744 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); | |
2745 | ||
2746 | /* Fake up a method call to VERSION */ | |
79cb57f6 | 2747 | meth = newSVOP(OP_CONST, 0, newSVpvn("VERSION", 7)); |
b1cb66bf | 2748 | veop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, |
2749 | append_elem(OP_LIST, | |
2750 | prepend_elem(OP_LIST, pack, list(version)), | |
2751 | newUNOP(OP_METHOD, 0, meth))); | |
2752 | } | |
2753 | } | |
aeea060c | 2754 | |
a0d0e21e | 2755 | /* Fake up an import/unimport */ |
4633a7c4 LW |
2756 | if (arg && arg->op_type == OP_STUB) |
2757 | imop = arg; /* no import on explicit () */ | |
b1cb66bf | 2758 | else if(SvNIOK(((SVOP*)id)->op_sv)) { |
2759 | imop = Nullop; /* use 5.0; */ | |
2760 | } | |
4633a7c4 LW |
2761 | else { |
2762 | /* Make copy of id so we don't free it twice */ | |
2763 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); | |
4633a7c4 LW |
2764 | meth = newSVOP(OP_CONST, 0, |
2765 | aver | |
79cb57f6 GS |
2766 | ? newSVpvn("import", 6) |
2767 | : newSVpvn("unimport", 8) | |
4633a7c4 LW |
2768 | ); |
2769 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, | |
a0d0e21e LW |
2770 | append_elem(OP_LIST, |
2771 | prepend_elem(OP_LIST, pack, list(arg)), | |
2772 | newUNOP(OP_METHOD, 0, meth))); | |
4633a7c4 LW |
2773 | } |
2774 | ||
78ca652e GS |
2775 | /* Fake up a require, handle override, if any */ |
2776 | gv = gv_fetchpv("require", FALSE, SVt_PVCV); | |
2777 | if (!(gv && GvIMPORTED_CV(gv))) | |
2778 | gv = gv_fetchpv("CORE::GLOBAL::require", FALSE, SVt_PVCV); | |
2779 | ||
2780 | if (gv && GvIMPORTED_CV(gv)) { | |
2781 | rqop = ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, | |
2782 | append_elem(OP_LIST, id, | |
2783 | scalar(newUNOP(OP_RV2CV, 0, | |
2784 | newGVOP(OP_GV, 0, | |
2785 | gv)))))); | |
2786 | } | |
2787 | else { | |
2788 | rqop = newUNOP(OP_REQUIRE, 0, id); | |
2789 | } | |
a0d0e21e LW |
2790 | |
2791 | /* Fake up the BEGIN {}, which does its thing immediately. */ | |
c07a80fd | 2792 | newSUB(floor, |
79cb57f6 | 2793 | newSVOP(OP_CONST, 0, newSVpvn("BEGIN", 5)), |
4633a7c4 | 2794 | Nullop, |
a0d0e21e | 2795 | append_elem(OP_LINESEQ, |
b1cb66bf | 2796 | append_elem(OP_LINESEQ, |
2797 | newSTATEOP(0, Nullch, rqop), | |
2798 | newSTATEOP(0, Nullch, veop)), | |
a0d0e21e | 2799 | newSTATEOP(0, Nullch, imop) )); |
85e6fe83 | 2800 | |
3280af22 NIS |
2801 | PL_copline = NOLINE; |
2802 | PL_expect = XSTATE; | |
85e6fe83 LW |
2803 | } |
2804 | ||
79072805 | 2805 | OP * |
864dbfa3 | 2806 | Perl_dofile(pTHX_ OP *term) |
78ca652e GS |
2807 | { |
2808 | OP *doop; | |
2809 | GV *gv; | |
2810 | ||
2811 | gv = gv_fetchpv("do", FALSE, SVt_PVCV); | |
2812 | if (!(gv && GvIMPORTED_CV(gv))) | |
2813 | gv = gv_fetchpv("CORE::GLOBAL::do", FALSE, SVt_PVCV); | |
2814 | ||
2815 | if (gv && GvIMPORTED_CV(gv)) { | |
2816 | doop = ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, | |
2817 | append_elem(OP_LIST, term, | |
2818 | scalar(newUNOP(OP_RV2CV, 0, | |
2819 | newGVOP(OP_GV, 0, | |
2820 | gv)))))); | |
2821 | } | |
2822 | else { | |
2823 | doop = newUNOP(OP_DOFILE, 0, scalar(term)); | |
2824 | } | |
2825 | return doop; | |
2826 | } | |
2827 | ||
2828 | OP * | |
864dbfa3 | 2829 | Perl_newSLICEOP(pTHX_ I32 flags, OP *subscript, OP *listval) |
79072805 LW |
2830 | { |
2831 | return newBINOP(OP_LSLICE, flags, | |
8990e307 LW |
2832 | list(force_list(subscript)), |
2833 | list(force_list(listval)) ); | |
79072805 LW |
2834 | } |
2835 | ||
76e3520e | 2836 | STATIC I32 |
cea2e8a9 | 2837 | S_list_assignment(pTHX_ register OP *o) |
79072805 | 2838 | { |
11343788 | 2839 | if (!o) |
79072805 LW |
2840 | return TRUE; |
2841 | ||
11343788 MB |
2842 | if (o->op_type == OP_NULL && o->op_flags & OPf_KIDS) |
2843 | o = cUNOPo->op_first; | |
79072805 | 2844 | |
11343788 MB |
2845 | if (o->op_type == OP_COND_EXPR) { |
2846 | I32 t = list_assignment(cCONDOPo->op_first->op_sibling); | |
2847 | I32 f = list_assignment(cCONDOPo->op_first->op_sibling->op_sibling); | |
79072805 LW |
2848 | |
2849 | if (t && f) | |
2850 | return TRUE; | |
2851 | if (t || f) | |
2852 | yyerror("Assignment to both a list and a scalar"); | |
2853 | return FALSE; | |
2854 | } | |
2855 | ||
11343788 MB |
2856 | if (o->op_type == OP_LIST || o->op_flags & OPf_PARENS || |
2857 | o->op_type == OP_RV2AV || o->op_type == OP_RV2HV || | |
2858 | o->op_type == OP_ASLICE || o->op_type == OP_HSLICE) | |
79072805 LW |
2859 | return TRUE; |
2860 | ||
11343788 | 2861 | if (o->op_type == OP_PADAV || o->op_type == OP_PADHV) |
93a17b20 LW |
2862 | return TRUE; |
2863 | ||
11343788 | 2864 | if (o->op_type == OP_RV2SV) |
79072805 LW |
2865 | return FALSE; |
2866 | ||
2867 | return FALSE; | |
2868 | } | |
2869 | ||
2870 | OP * | |
864dbfa3 | 2871 | Perl_newASSIGNOP(pTHX_ I32 flags, OP *left, I32 optype, OP *right) |
79072805 | 2872 | { |
11343788 | 2873 | OP *o; |
79072805 | 2874 | |
a0d0e21e LW |
2875 | if (optype) { |
2876 | if (optype == OP_ANDASSIGN || optype == OP_ORASSIGN) { | |
2877 | return newLOGOP(optype, 0, | |
2878 | mod(scalar(left), optype), | |
2879 | newUNOP(OP_SASSIGN, 0, scalar(right))); | |
2880 | } | |
2881 | else { | |
2882 | return newBINOP(optype, OPf_STACKED, | |
2883 | mod(scalar(left), optype), scalar(right)); | |
2884 | } | |
2885 | } | |
2886 | ||
79072805 | 2887 | if (list_assignment(left)) { |
6ee623d5 | 2888 | dTHR; |
3280af22 NIS |
2889 | PL_modcount = 0; |
2890 | PL_eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ | |
463ee0b2 | 2891 | left = mod(left, OP_AASSIGN); |
3280af22 NIS |
2892 | if (PL_eval_start) |
2893 | PL_eval_start = 0; | |
748a9306 | 2894 | else { |
a0d0e21e LW |
2895 | op_free(left); |
2896 | op_free(right); | |
2897 | return Nullop; | |
2898 | } | |
11343788 | 2899 | o = newBINOP(OP_AASSIGN, flags, |
8990e307 LW |
2900 | list(force_list(right)), |
2901 | list(force_list(left)) ); | |
11343788 | 2902 | o->op_private = 0 | (flags >> 8); |
a0d0e21e | 2903 | if (!(left->op_private & OPpLVAL_INTRO)) { |
79072805 | 2904 | OP *curop; |
11343788 | 2905 | OP *lastop = o; |
3280af22 | 2906 | PL_generation++; |
11343788 | 2907 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
22c35a8c | 2908 | if (PL_opargs[curop->op_type] & OA_DANGEROUS) { |
79072805 LW |
2909 | if (curop->op_type == OP_GV) { |
2910 | GV *gv = ((GVOP*)curop)->op_gv; | |
3280af22 | 2911 | if (gv == PL_defgv || SvCUR(gv) == PL_generation) |
79072805 | 2912 | break; |
3280af22 | 2913 | SvCUR(gv) = PL_generation; |
79072805 | 2914 | } |
748a9306 LW |
2915 | else if (curop->op_type == OP_PADSV || |
2916 | curop->op_type == OP_PADAV || | |
2917 | curop->op_type == OP_PADHV || | |
2918 | curop->op_type == OP_PADANY) { | |
3280af22 | 2919 | SV **svp = AvARRAY(PL_comppad_name); |
8e07c86e | 2920 | SV *sv = svp[curop->op_targ]; |
3280af22 | 2921 | if (SvCUR(sv) == PL_generation) |
748a9306 | 2922 | break; |
3280af22 | 2923 | SvCUR(sv) = PL_generation; /* (SvCUR not used any more) */ |
748a9306 | 2924 | } |
79072805 LW |
2925 | else if (curop->op_type == OP_RV2CV) |
2926 | break; | |
2927 | else if (curop->op_type == OP_RV2SV || | |
2928 | curop->op_type == OP_RV2AV || | |
2929 | curop->op_type == OP_RV2HV || | |
2930 | curop->op_type == OP_RV2GV) { | |
2931 | if (lastop->op_type != OP_GV) /* funny deref? */ | |
2932 | break; | |
2933 | } | |
1167e5da SM |
2934 | else if (curop->op_type == OP_PUSHRE) { |
2935 | if (((PMOP*)curop)->op_pmreplroot) { | |
2936 | GV *gv = (GV*)((PMOP*)curop)->op_pmreplroot; | |
3280af22 | 2937 | if (gv == PL_defgv || SvCUR(gv) == PL_generation) |
1167e5da | 2938 | break; |
3280af22 | 2939 | SvCUR(gv) = PL_generation; |
1167e5da SM |
2940 | } |
2941 | } | |
79072805 LW |
2942 | else |
2943 | break; | |
2944 | } | |
2945 | lastop = curop; | |
2946 | } | |
11343788 MB |
2947 | if (curop != o) |
2948 | o->op_private = OPpASSIGN_COMMON; | |
79072805 | 2949 | } |
c07a80fd | 2950 | if (right && right->op_type == OP_SPLIT) { |
2951 | OP* tmpop; | |
2952 | if ((tmpop = ((LISTOP*)right)->op_first) && | |
2953 | tmpop->op_type == OP_PUSHRE) | |
2954 | { | |
2955 | PMOP *pm = (PMOP*)tmpop; | |
2956 | if (left->op_type == OP_RV2AV && | |
2957 | !(left->op_private & OPpLVAL_INTRO) && | |
11343788 | 2958 | !(o->op_private & OPpASSIGN_COMMON) ) |
c07a80fd | 2959 | { |
2960 | tmpop = ((UNOP*)left)->op_first; | |
2961 | if (tmpop->op_type == OP_GV && !pm->op_pmreplroot) { | |
2962 | pm->op_pmreplroot = (OP*)((GVOP*)tmpop)->op_gv; | |
2963 | pm->op_pmflags |= PMf_ONCE; | |
11343788 | 2964 | tmpop = cUNOPo->op_first; /* to list (nulled) */ |
c07a80fd | 2965 | tmpop = ((UNOP*)tmpop)->op_first; /* to pushmark */ |
2966 | tmpop->op_sibling = Nullop; /* don't free split */ | |
2967 | right->op_next = tmpop->op_next; /* fix starting loc */ | |
11343788 | 2968 | op_free(o); /* blow off assign */ |
54310121 | 2969 | right->op_flags &= ~OPf_WANT; |
a5f75d66 | 2970 | /* "I don't know and I don't care." */ |
c07a80fd | 2971 | return right; |
2972 | } | |
2973 | } | |
2974 | else { | |
3280af22 | 2975 | if (PL_modcount < 10000 && |
c07a80fd | 2976 | ((LISTOP*)right)->op_last->op_type == OP_CONST) |
2977 | { | |
2978 | SV *sv = ((SVOP*)((LISTOP*)right)->op_last)->op_sv; | |
2979 | if (SvIVX(sv) == 0) | |
3280af22 | 2980 | sv_setiv(sv, PL_modcount+1); |
c07a80fd | 2981 | } |
2982 | } | |
2983 | } | |
2984 | } | |
11343788 | 2985 | return o; |
79072805 LW |
2986 | } |
2987 | if (!right) | |
2988 | right = newOP(OP_UNDEF, 0); | |
2989 | if (right->op_type == OP_READLINE) { | |
2990 | right->op_flags |= OPf_STACKED; | |
463ee0b2 | 2991 | return newBINOP(OP_NULL, flags, mod(scalar(left), OP_SASSIGN), scalar(right)); |
79072805 | 2992 | } |
a0d0e21e | 2993 | else { |
3280af22 | 2994 | PL_eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ |
11343788 | 2995 | o = newBINOP(OP_SASSIGN, flags, |
463ee0b2 | 2996 | scalar(right), mod(scalar(left), OP_SASSIGN) ); |
3280af22 NIS |
2997 | if (PL_eval_start) |
2998 | PL_eval_start = 0; | |
748a9306 | 2999 | else { |
11343788 | 3000 | op_free(o); |
a0d0e21e LW |
3001 | return Nullop; |
3002 | } | |
3003 | } | |
11343788 | 3004 | return o; |
79072805 LW |
3005 | } |
3006 | ||
3007 | OP * | |
864dbfa3 | 3008 | Perl_newSTATEOP(pTHX_ I32 flags, char *label, OP *o) |
79072805 | 3009 | { |
11343788 | 3010 | dTHR; |
bbce6d69 | 3011 | U32 seq = intro_my(); |
79072805 LW |
3012 | register COP *cop; |
3013 | ||
b7dc083c | 3014 | NewOp(1101, cop, 1, COP); |
3280af22 | 3015 | if (PERLDB_LINE && PL_curcop->cop_line && PL_curstash != PL_debstash) { |
8990e307 | 3016 | cop->op_type = OP_DBSTATE; |
22c35a8c | 3017 | cop->op_ppaddr = PL_ppaddr[ OP_DBSTATE ]; |
8990e307 LW |
3018 | } |
3019 | else { | |
3020 | cop->op_type = OP_NEXTSTATE; | |
22c35a8c | 3021 | cop->op_ppaddr = PL_ppaddr[ OP_NEXTSTATE ]; |
8990e307 | 3022 | } |
79072805 | 3023 | cop->op_flags = flags; |
a0ed51b3 | 3024 | cop->op_private = (PL_hints & HINT_UTF8); |
ff0cee69 | 3025 | #ifdef NATIVE_HINTS |
3026 | cop->op_private |= NATIVE_HINTS; | |
3027 | #endif | |
e24b16f9 | 3028 | PL_compiling.op_private = cop->op_private; |
79072805 LW |
3029 | cop->op_next = (OP*)cop; |
3030 | ||
463ee0b2 LW |
3031 | if (label) { |
3032 | cop->cop_label = label; | |
3280af22 | 3033 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 3034 | } |
bbce6d69 | 3035 | cop->cop_seq = seq; |
3280af22 | 3036 | cop->cop_arybase = PL_curcop->cop_arybase; |
599cee73 PM |
3037 | if (PL_curcop->cop_warnings == WARN_NONE |
3038 | || PL_curcop->cop_warnings == WARN_ALL) | |
3039 | cop->cop_warnings = PL_curcop->cop_warnings ; | |
3040 | else | |
3041 | cop->cop_warnings = newSVsv(PL_curcop->cop_warnings) ; | |
3042 | ||
79072805 | 3043 | |
3280af22 NIS |
3044 | if (PL_copline == NOLINE) |
3045 | cop->cop_line = PL_curcop->cop_line; | |
79072805 | 3046 | else { |
3280af22 NIS |
3047 | cop->cop_line = PL_copline; |
3048 | PL_copline = NOLINE; | |
79072805 | 3049 | } |
3280af22 NIS |
3050 | cop->cop_filegv = (GV*)SvREFCNT_inc(PL_curcop->cop_filegv); |
3051 | cop->cop_stash = PL_curstash; | |
79072805 | 3052 | |
3280af22 NIS |
3053 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
3054 | SV **svp = av_fetch(GvAV(PL_curcop->cop_filegv),(I32)cop->cop_line, FALSE); | |
3055 | if (svp && *svp != &PL_sv_undef && !SvIOK(*svp)) { | |
a0d0e21e | 3056 | (void)SvIOK_on(*svp); |
a5f75d66 | 3057 | SvIVX(*svp) = 1; |
93a17b20 LW |
3058 | SvSTASH(*svp) = (HV*)cop; |
3059 | } | |
3060 | } | |
3061 | ||
11343788 | 3062 | return prepend_elem(OP_LINESEQ, (OP*)cop, o); |
79072805 LW |
3063 | } |
3064 | ||
bbce6d69 | 3065 | /* "Introduce" my variables to visible status. */ |
3066 | U32 | |
864dbfa3 | 3067 | Perl_intro_my(pTHX) |
bbce6d69 | 3068 | { |
3069 | SV **svp; | |
3070 | SV *sv; | |
3071 | I32 i; | |
3072 | ||
3280af22 NIS |
3073 | if (! PL_min_intro_pending) |
3074 | return PL_cop_seqmax; | |
bbce6d69 | 3075 | |
3280af22 NIS |
3076 | svp = AvARRAY(PL_comppad_name); |
3077 | for (i = PL_min_intro_pending; i <= PL_max_intro_pending; i++) { | |
3078 | if ((sv = svp[i]) && sv != &PL_sv_undef && !SvIVX(sv)) { | |
c53d7c7d | 3079 | SvIVX(sv) = PAD_MAX; /* Don't know scope end yet. */ |
3280af22 | 3080 | SvNVX(sv) = (double)PL_cop_seqmax; |
bbce6d69 | 3081 | } |
3082 | } | |
3280af22 NIS |
3083 | PL_min_intro_pending = 0; |
3084 | PL_comppad_name_fill = PL_max_intro_pending; /* Needn't search higher */ | |
3085 | return PL_cop_seqmax++; | |
bbce6d69 | 3086 | } |
3087 | ||
79072805 | 3088 | OP * |
864dbfa3 | 3089 | Perl_newLOGOP(pTHX_ I32 type, I32 flags, OP *first, OP *other) |
79072805 | 3090 | { |
883ffac3 CS |
3091 | return new_logop(type, flags, &first, &other); |
3092 | } | |
3093 | ||
3bd495df | 3094 | STATIC OP * |
cea2e8a9 | 3095 | S_new_logop(pTHX_ I32 type, I32 flags, OP** firstp, OP** otherp) |
883ffac3 | 3096 | { |
11343788 | 3097 | dTHR; |
79072805 | 3098 | LOGOP *logop; |
11343788 | 3099 | OP *o; |
883ffac3 CS |
3100 | OP *first = *firstp; |
3101 | OP *other = *otherp; | |
79072805 | 3102 | |
a0d0e21e LW |
3103 | if (type == OP_XOR) /* Not short circuit, but here by precedence. */ |
3104 | return newBINOP(type, flags, scalar(first), scalar(other)); | |
3105 | ||
8990e307 | 3106 | scalarboolean(first); |
79072805 LW |
3107 | /* optimize "!a && b" to "a || b", and "!a || b" to "a && b" */ |
3108 | if (first->op_type == OP_NOT && (first->op_flags & OPf_SPECIAL)) { | |
3109 | if (type == OP_AND || type == OP_OR) { | |
3110 | if (type == OP_AND) | |
3111 | type = OP_OR; | |
3112 | else | |
3113 | type = OP_AND; | |
11343788 | 3114 | o = first; |
883ffac3 | 3115 | first = *firstp = cUNOPo->op_first; |
11343788 MB |
3116 | if (o->op_next) |
3117 | first->op_next = o->op_next; | |
3118 | cUNOPo->op_first = Nullop; | |
3119 | op_free(o); | |
79072805 LW |
3120 | } |
3121 | } | |
3122 | if (first->op_type == OP_CONST) { | |
599cee73 | 3123 | if (ckWARN(WARN_PRECEDENCE) && (first->op_private & OPpCONST_BARE)) |
cea2e8a9 | 3124 | Perl_warner(aTHX_ WARN_PRECEDENCE, "Probable precedence problem on %s", |
22c35a8c | 3125 | PL_op_desc[type]); |
79072805 LW |
3126 | if ((type == OP_AND) == (SvTRUE(((SVOP*)first)->op_sv))) { |
3127 | op_free(first); | |
883ffac3 | 3128 | *firstp = Nullop; |
79072805 LW |
3129 | return other; |
3130 | } | |
3131 | else { | |
3132 | op_free(other); | |
883ffac3 | 3133 | *otherp = Nullop; |
79072805 LW |
3134 | return first; |
3135 | } | |
3136 | } | |
3137 | else if (first->op_type == OP_WANTARRAY) { | |
3138 | if (type == OP_AND) | |
3139 | list(other); | |
3140 | else | |
3141 | scalar(other); | |
3142 | } | |
599cee73 | 3143 | else if (ckWARN(WARN_UNSAFE) && (first->op_flags & OPf_KIDS)) { |
a6006777 | 3144 | OP *k1 = ((UNOP*)first)->op_first; |
3145 | OP *k2 = k1->op_sibling; | |
3146 | OPCODE warnop = 0; | |
3147 | switch (first->op_type) | |
3148 | { | |
3149 | case OP_NULL: | |
3150 | if (k2 && k2->op_type == OP_READLINE | |
3151 | && (k2->op_flags & OPf_STACKED) | |
55d729e4 | 3152 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
a6006777 | 3153 | warnop = k2->op_type; |
3154 | break; | |
3155 | ||
3156 | case OP_SASSIGN: | |
68dc0745 | 3157 | if (k1->op_type == OP_READDIR |
3158 | || k1->op_type == OP_GLOB | |
3159 | || k1->op_type == OP_EACH) | |
a6006777 | 3160 | warnop = k1->op_type; |
3161 | break; | |
3162 | } | |
8ebc5c01 | 3163 | if (warnop) { |
3280af22 NIS |
3164 | line_t oldline = PL_curcop->cop_line; |
3165 | PL_curcop->cop_line = PL_copline; | |
cea2e8a9 | 3166 | Perl_warner(aTHX_ WARN_UNSAFE, |
599cee73 | 3167 | "Value of %s%s can be \"0\"; test with defined()", |
22c35a8c | 3168 | PL_op_desc[warnop], |
68dc0745 | 3169 | ((warnop == OP_READLINE || warnop == OP_GLOB) |
3170 | ? " construct" : "() operator")); | |
3280af22 | 3171 | PL_curcop->cop_line = oldline; |
8ebc5c01 | 3172 | } |
a6006777 | 3173 | } |
79072805 LW |
3174 | |
3175 | if (!other) | |
3176 | return first; | |
3177 | ||
a0d0e21e LW |
3178 | if (type == OP_ANDASSIGN || type == OP_ORASSIGN) |
3179 | other->op_private |= OPpASSIGN_BACKWARDS; /* other is an OP_SASSIGN */ | |
3180 | ||
b7dc083c | 3181 | NewOp(1101, logop, 1, LOGOP); |
79072805 LW |
3182 | |
3183 | logop->op_type = type; | |
22c35a8c | 3184 | logop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
3185 | logop->op_first = first; |
3186 | logop->op_flags = flags | OPf_KIDS; | |
3187 | logop->op_other = LINKLIST(other); | |
c07a80fd | 3188 | logop->op_private = 1 | (flags >> 8); |
79072805 LW |
3189 | |
3190 | /* establish postfix order */ | |
3191 | logop->op_next = LINKLIST(first); | |
3192 | first->op_next = (OP*)logop; | |
3193 | first->op_sibling = other; | |
3194 | ||
11343788 MB |
3195 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
3196 | other->op_next = o; | |
79072805 | 3197 | |
11343788 | 3198 | return o; |
79072805 LW |
3199 | } |
3200 | ||
3201 | OP * | |
864dbfa3 | 3202 | Perl_newCONDOP(pTHX_ I32 flags, OP *first, OP *trueop, OP *falseop) |
79072805 | 3203 | { |
11343788 | 3204 | dTHR; |
79072805 | 3205 | CONDOP *condop; |
11343788 | 3206 | OP *o; |
79072805 | 3207 | |
b1cb66bf | 3208 | if (!falseop) |
3209 | return newLOGOP(OP_AND, 0, first, trueop); | |
3210 | if (!trueop) | |
3211 | return newLOGOP(OP_OR, 0, first, falseop); | |
79072805 | 3212 | |
8990e307 | 3213 | scalarboolean(first); |
79072805 LW |
3214 | if (first->op_type == OP_CONST) { |
3215 | if (SvTRUE(((SVOP*)first)->op_sv)) { | |
3216 | op_free(first); | |
b1cb66bf | 3217 | op_free(falseop); |
3218 | return trueop; | |
79072805 LW |
3219 | } |
3220 | else { | |
3221 | op_free(first); | |
b1cb66bf | 3222 | op_free(trueop); |
3223 | return falseop; | |
79072805 LW |
3224 | } |
3225 | } | |
3226 | else if (first->op_type == OP_WANTARRAY) { | |
b1cb66bf | 3227 | list(trueop); |
3228 | scalar(falseop); | |
79072805 | 3229 | } |
b7dc083c | 3230 | NewOp(1101, condop, 1, CONDOP); |
79072805 LW |
3231 | |
3232 | condop->op_type = OP_COND_EXPR; | |
22c35a8c | 3233 | condop->op_ppaddr = PL_ppaddr[OP_COND_EXPR]; |
79072805 LW |
3234 | condop->op_first = first; |
3235 | condop->op_flags = flags | OPf_KIDS; | |
b1cb66bf | 3236 | condop->op_true = LINKLIST(trueop); |
3237 | condop->op_false = LINKLIST(falseop); | |
c07a80fd | 3238 | condop->op_private = 1 | (flags >> 8); |
79072805 LW |
3239 | |
3240 | /* establish postfix order */ | |
3241 | condop->op_next = LINKLIST(first); | |
3242 | first->op_next = (OP*)condop; | |
3243 | ||
b1cb66bf | 3244 | first->op_sibling = trueop; |
3245 | trueop->op_sibling = falseop; | |
11343788 | 3246 | o = newUNOP(OP_NULL, 0, (OP*)condop); |
79072805 | 3247 | |
5dc0d613 MB |
3248 | trueop->op_next = o; |
3249 | falseop->op_next = o; | |
79072805 | 3250 | |
11343788 | 3251 | return o; |
79072805 LW |
3252 | } |
3253 | ||
3254 | OP * | |
864dbfa3 | 3255 | Perl_newRANGE(pTHX_ I32 flags, OP *left, OP *right) |
79072805 | 3256 | { |
b35b2403 | 3257 | dTHR; |
79072805 LW |
3258 | CONDOP *condop; |
3259 | OP *flip; | |
3260 | OP *flop; | |
11343788 | 3261 | OP *o; |
79072805 | 3262 | |
b7dc083c | 3263 | NewOp(1101, condop, 1, CONDOP); |
79072805 LW |
3264 | |
3265 | condop->op_type = OP_RANGE; | |
22c35a8c | 3266 | condop->op_ppaddr = PL_ppaddr[OP_RANGE]; |
79072805 LW |
3267 | condop->op_first = left; |
3268 | condop->op_flags = OPf_KIDS; | |
3269 | condop->op_true = LINKLIST(left); | |
3270 | condop->op_false = LINKLIST(right); | |
c07a80fd | 3271 | condop->op_private = 1 | (flags >> 8); |
79072805 LW |
3272 | |
3273 | left->op_sibling = right; | |
3274 | ||
3275 | condop->op_next = (OP*)condop; | |
3276 | flip = newUNOP(OP_FLIP, flags, (OP*)condop); | |
3277 | flop = newUNOP(OP_FLOP, 0, flip); | |
11343788 | 3278 | o = newUNOP(OP_NULL, 0, flop); |
79072805 LW |
3279 | linklist(flop); |
3280 | ||
3281 | left->op_next = flip; | |
3282 | right->op_next = flop; | |
3283 | ||
ed6116ce | 3284 | condop->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 | 3285 | sv_upgrade(PAD_SV(condop->op_targ), SVt_PVNV); |
ed6116ce | 3286 | flip->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 LW |
3287 | sv_upgrade(PAD_SV(flip->op_targ), SVt_PVNV); |
3288 | ||
3289 | flip->op_private = left->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
3290 | flop->op_private = right->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
3291 | ||
11343788 | 3292 | flip->op_next = o; |
79072805 | 3293 | if (!flip->op_private || !flop->op_private) |
11343788 | 3294 | linklist(o); /* blow off optimizer unless constant */ |
79072805 | 3295 | |
11343788 | 3296 | return o; |
79072805 LW |
3297 | } |
3298 | ||
3299 | OP * | |
864dbfa3 | 3300 | Perl_newLOOPOP(pTHX_ I32 flags, I32 debuggable, OP *expr, OP *block) |
79072805 | 3301 | { |
11343788 | 3302 | dTHR; |
463ee0b2 | 3303 | OP* listop; |
11343788 | 3304 | OP* o; |
463ee0b2 | 3305 | int once = block && block->op_flags & OPf_SPECIAL && |
a0d0e21e | 3306 | (block->op_type == OP_ENTERSUB || block->op_type == OP_NULL); |
93a17b20 | 3307 | |
463ee0b2 LW |
3308 | if (expr) { |
3309 | if (once && expr->op_type == OP_CONST && !SvTRUE(((SVOP*)expr)->op_sv)) | |
3310 | return block; /* do {} while 0 does once */ | |
fb73857a | 3311 | if (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB |
3312 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB)) { | |
774d564b | 3313 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 3314 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 GS |
3315 | } else if (expr->op_flags & OPf_KIDS) { |
3316 | OP *k1 = ((UNOP*)expr)->op_first; | |
3317 | OP *k2 = (k1) ? k1->op_sibling : NULL; | |
3318 | switch (expr->op_type) { | |
3319 | case OP_NULL: | |
3320 | if (k2 && k2->op_type == OP_READLINE | |
3321 | && (k2->op_flags & OPf_STACKED) | |
3322 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) | |
3323 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3324 | break; | |
3325 | ||
3326 | case OP_SASSIGN: | |
3327 | if (k1->op_type == OP_READDIR | |
3328 | || k1->op_type == OP_GLOB | |
3329 | || k1->op_type == OP_EACH) | |
3330 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3331 | break; | |
3332 | } | |
774d564b | 3333 | } |
463ee0b2 | 3334 | } |
93a17b20 | 3335 | |
8990e307 | 3336 | listop = append_elem(OP_LINESEQ, block, newOP(OP_UNSTACK, 0)); |
883ffac3 | 3337 | o = new_logop(OP_AND, 0, &expr, &listop); |
463ee0b2 | 3338 | |
883ffac3 CS |
3339 | if (listop) |
3340 | ((LISTOP*)listop)->op_last->op_next = LINKLIST(o); | |
79072805 | 3341 | |
11343788 MB |
3342 | if (once && o != listop) |
3343 | o->op_next = ((LOGOP*)cUNOPo->op_first)->op_other; | |
79072805 | 3344 | |
11343788 MB |
3345 | if (o == listop) |
3346 | o = newUNOP(OP_NULL, 0, o); /* or do {} while 1 loses outer block */ | |
748a9306 | 3347 | |
11343788 MB |
3348 | o->op_flags |= flags; |
3349 | o = scope(o); | |
3350 | o->op_flags |= OPf_SPECIAL; /* suppress POPBLOCK curpm restoration*/ | |
3351 | return o; | |
79072805 LW |
3352 | } |
3353 | ||
3354 | OP * | |
864dbfa3 | 3355 | Perl_newWHILEOP(pTHX_ I32 flags, I32 debuggable, LOOP *loop, I32 whileline, OP *expr, OP *block, OP *cont) |
79072805 | 3356 | { |
11343788 | 3357 | dTHR; |
79072805 LW |
3358 | OP *redo; |
3359 | OP *next = 0; | |
3360 | OP *listop; | |
11343788 | 3361 | OP *o; |
79072805 LW |
3362 | OP *condop; |
3363 | ||
fb73857a | 3364 | if (expr && (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB |
3365 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB))) { | |
748a9306 | 3366 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 3367 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 GS |
3368 | } else if (expr && (expr->op_flags & OPf_KIDS)) { |
3369 | OP *k1 = ((UNOP*)expr)->op_first; | |
3370 | OP *k2 = (k1) ? k1->op_sibling : NULL; | |
3371 | switch (expr->op_type) { | |
3372 | case OP_NULL: | |
3373 | if (k2 && k2->op_type == OP_READLINE | |
3374 | && (k2->op_flags & OPf_STACKED) | |
3375 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) | |
3376 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3377 | break; | |
3378 | ||
3379 | case OP_SASSIGN: | |
3380 | if (k1->op_type == OP_READDIR | |
3381 | || k1->op_type == OP_GLOB | |
3382 | || k1->op_type == OP_EACH) | |
3383 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3384 | break; | |
3385 | } | |
748a9306 | 3386 | } |
79072805 LW |
3387 | |
3388 | if (!block) | |
3389 | block = newOP(OP_NULL, 0); | |
3390 | ||
3391 | if (cont) | |
3392 | next = LINKLIST(cont); | |
fb73857a | 3393 | if (expr) { |
79072805 | 3394 | cont = append_elem(OP_LINESEQ, cont, newOP(OP_UNSTACK, 0)); |
fb73857a | 3395 | if ((line_t)whileline != NOLINE) { |
3280af22 | 3396 | PL_copline = whileline; |
fb73857a | 3397 | cont = append_elem(OP_LINESEQ, cont, |
3398 | newSTATEOP(0, Nullch, Nullop)); | |
3399 | } | |
3400 | } | |
79072805 | 3401 | |
463ee0b2 | 3402 | listop = append_list(OP_LINESEQ, (LISTOP*)block, (LISTOP*)cont); |
79072805 LW |
3403 | redo = LINKLIST(listop); |
3404 | ||
3405 | if (expr) { | |
3280af22 | 3406 | PL_copline = whileline; |
883ffac3 CS |
3407 | scalar(listop); |
3408 | o = new_logop(OP_AND, 0, &expr, &listop); | |
11343788 | 3409 | if (o == expr && o->op_type == OP_CONST && !SvTRUE(cSVOPo->op_sv)) { |
85e6fe83 | 3410 | op_free(expr); /* oops, it's a while (0) */ |
463ee0b2 | 3411 | op_free((OP*)loop); |
883ffac3 | 3412 | return Nullop; /* listop already freed by new_logop */ |
463ee0b2 | 3413 | } |
883ffac3 CS |
3414 | if (listop) |
3415 | ((LISTOP*)listop)->op_last->op_next = condop = | |
3416 | (o == listop ? redo : LINKLIST(o)); | |
79072805 LW |
3417 | if (!next) |
3418 | next = condop; | |
3419 | } | |
3420 | else | |
11343788 | 3421 | o = listop; |
79072805 LW |
3422 | |
3423 | if (!loop) { | |
b7dc083c | 3424 | NewOp(1101,loop,1,LOOP); |
79072805 | 3425 | loop->op_type = OP_ENTERLOOP; |
22c35a8c | 3426 | loop->op_ppaddr = PL_ppaddr[OP_ENTERLOOP]; |
79072805 LW |
3427 | loop->op_private = 0; |
3428 | loop->op_next = (OP*)loop; | |
3429 | } | |
3430 | ||
11343788 | 3431 | o = newBINOP(OP_LEAVELOOP, 0, (OP*)loop, o); |
79072805 LW |
3432 | |
3433 | loop->op_redoop = redo; | |
11343788 | 3434 | loop->op_lastop = o; |
79072805 LW |
3435 | |
3436 | if (next) | |
3437 | loop->op_nextop = next; | |
3438 | else | |
11343788 | 3439 | loop->op_nextop = o; |
79072805 | 3440 | |
11343788 MB |
3441 | o->op_flags |= flags; |
3442 | o->op_private |= (flags >> 8); | |
3443 | return o; | |
79072805 LW |
3444 | } |
3445 | ||
3446 | OP * | |
864dbfa3 | 3447 | Perl_newFOROP(pTHX_ I32 flags,char *label,line_t forline,OP *sv,OP *expr,OP *block,OP *cont) |
79072805 LW |
3448 | { |
3449 | LOOP *loop; | |
b7dc083c | 3450 | LOOP *tmp; |
fb73857a | 3451 | OP *wop; |
85e6fe83 | 3452 | int padoff = 0; |
4633a7c4 | 3453 | I32 iterflags = 0; |
79072805 | 3454 | |
79072805 | 3455 | if (sv) { |
85e6fe83 | 3456 | if (sv->op_type == OP_RV2SV) { /* symbol table variable */ |
748a9306 | 3457 | sv->op_type = OP_RV2GV; |
22c35a8c | 3458 | sv->op_ppaddr = PL_ppaddr[OP_RV2GV]; |
79072805 | 3459 | } |
85e6fe83 LW |
3460 | else if (sv->op_type == OP_PADSV) { /* private variable */ |
3461 | padoff = sv->op_targ; | |
3462 | op_free(sv); | |
3463 | sv = Nullop; | |
3464 | } | |
54b9620d MB |
3465 | else if (sv->op_type == OP_THREADSV) { /* per-thread variable */ |
3466 | padoff = sv->op_targ; | |
3467 | iterflags |= OPf_SPECIAL; | |
3468 | op_free(sv); | |
3469 | sv = Nullop; | |
3470 | } | |
79072805 | 3471 | else |
cea2e8a9 | 3472 | Perl_croak(aTHX_ "Can't use %s for loop variable", PL_op_desc[sv->op_type]); |
79072805 LW |
3473 | } |
3474 | else { | |
54b9620d MB |
3475 | #ifdef USE_THREADS |
3476 | padoff = find_threadsv("_"); | |
3477 | iterflags |= OPf_SPECIAL; | |
3478 | #else | |
3280af22 | 3479 | sv = newGVOP(OP_GV, 0, PL_defgv); |
54b9620d | 3480 | #endif |
79072805 | 3481 | } |
5f05dabc | 3482 | if (expr->op_type == OP_RV2AV || expr->op_type == OP_PADAV) { |
89ea2908 | 3483 | expr = mod(force_list(scalar(ref(expr, OP_ITER))), OP_GREPSTART); |
4633a7c4 LW |
3484 | iterflags |= OPf_STACKED; |
3485 | } | |
89ea2908 GA |
3486 | else if (expr->op_type == OP_NULL && |
3487 | (expr->op_flags & OPf_KIDS) && | |
3488 | ((BINOP*)expr)->op_first->op_type == OP_FLOP) | |
3489 | { | |
3490 | /* Basically turn for($x..$y) into the same as for($x,$y), but we | |
3491 | * set the STACKED flag to indicate that these values are to be | |
3492 | * treated as min/max values by 'pp_iterinit'. | |
3493 | */ | |
3494 | UNOP* flip = (UNOP*)((UNOP*)((BINOP*)expr)->op_first)->op_first; | |
3495 | CONDOP* range = (CONDOP*) flip->op_first; | |
3496 | OP* left = range->op_first; | |
3497 | OP* right = left->op_sibling; | |
5152d7c7 | 3498 | LISTOP* listop; |
89ea2908 GA |
3499 | |
3500 | range->op_flags &= ~OPf_KIDS; | |
3501 | range->op_first = Nullop; | |
3502 | ||
5152d7c7 GS |
3503 | listop = (LISTOP*)newLISTOP(OP_LIST, 0, left, right); |
3504 | listop->op_first->op_next = range->op_true; | |
89ea2908 | 3505 | left->op_next = range->op_false; |
5152d7c7 GS |
3506 | right->op_next = (OP*)listop; |
3507 | listop->op_next = listop->op_first; | |
89ea2908 GA |
3508 | |
3509 | op_free(expr); | |
5152d7c7 | 3510 | expr = (OP*)(listop); |
89ea2908 GA |
3511 | null(expr); |
3512 | iterflags |= OPf_STACKED; | |
3513 | } | |
3514 | else { | |
3515 | expr = mod(force_list(expr), OP_GREPSTART); | |
3516 | } | |
3517 | ||
3518 | ||
4633a7c4 | 3519 | loop = (LOOP*)list(convert(OP_ENTERITER, iterflags, |
89ea2908 | 3520 | append_elem(OP_LIST, expr, scalar(sv)))); |
85e6fe83 | 3521 | assert(!loop->op_next); |
b7dc083c NIS |
3522 | #ifdef PL_OP_SLAB_ALLOC |
3523 | NewOp(1234,tmp,1,LOOP); | |
3524 | Copy(loop,tmp,1,LOOP); | |
3525 | loop = tmp; | |
3526 | #else | |
85e6fe83 | 3527 | Renew(loop, 1, LOOP); |
b7dc083c | 3528 | #endif |
85e6fe83 | 3529 | loop->op_targ = padoff; |
fb73857a | 3530 | wop = newWHILEOP(flags, 1, loop, forline, newOP(OP_ITER, 0), block, cont); |
3280af22 | 3531 | PL_copline = forline; |
fb73857a | 3532 | return newSTATEOP(0, label, wop); |
79072805 LW |
3533 | } |
3534 | ||
8990e307 | 3535 | OP* |
864dbfa3 | 3536 | Perl_newLOOPEX(pTHX_ I32 type, OP *label) |
8990e307 | 3537 | { |
11343788 MB |
3538 | dTHR; |
3539 | OP *o; | |
2d8e6c8d GS |
3540 | STRLEN n_a; |
3541 | ||
8990e307 | 3542 | if (type != OP_GOTO || label->op_type == OP_CONST) { |
cdaebead MB |
3543 | /* "last()" means "last" */ |
3544 | if (label->op_type == OP_STUB && (label->op_flags & OPf_PARENS)) | |
3545 | o = newOP(type, OPf_SPECIAL); | |
3546 | else { | |
3547 | o = newPVOP(type, 0, savepv(label->op_type == OP_CONST | |
2d8e6c8d | 3548 | ? SvPVx(((SVOP*)label)->op_sv, n_a) |
cdaebead MB |
3549 | : "")); |
3550 | } | |
8990e307 LW |
3551 | op_free(label); |
3552 | } | |
3553 | else { | |
a0d0e21e LW |
3554 | if (label->op_type == OP_ENTERSUB) |
3555 | label = newUNOP(OP_REFGEN, 0, mod(label, OP_REFGEN)); | |
11343788 | 3556 | o = newUNOP(type, OPf_STACKED, label); |
8990e307 | 3557 | } |
3280af22 | 3558 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 3559 | return o; |
8990e307 LW |
3560 | } |
3561 | ||
79072805 | 3562 | void |
864dbfa3 | 3563 | Perl_cv_undef(pTHX_ CV *cv) |
79072805 | 3564 | { |
11343788 MB |
3565 | dTHR; |
3566 | #ifdef USE_THREADS | |
e858de61 MB |
3567 | if (CvMUTEXP(cv)) { |
3568 | MUTEX_DESTROY(CvMUTEXP(cv)); | |
3569 | Safefree(CvMUTEXP(cv)); | |
3570 | CvMUTEXP(cv) = 0; | |
3571 | } | |
11343788 MB |
3572 | #endif /* USE_THREADS */ |
3573 | ||
a0d0e21e | 3574 | if (!CvXSUB(cv) && CvROOT(cv)) { |
11343788 MB |
3575 | #ifdef USE_THREADS |
3576 | if (CvDEPTH(cv) || (CvOWNER(cv) && CvOWNER(cv) != thr)) | |
cea2e8a9 | 3577 | Perl_croak(aTHX_ "Can't undef active subroutine"); |
11343788 | 3578 | #else |
a0d0e21e | 3579 | if (CvDEPTH(cv)) |
cea2e8a9 | 3580 | Perl_croak(aTHX_ "Can't undef active subroutine"); |
11343788 | 3581 | #endif /* USE_THREADS */ |
8990e307 | 3582 | ENTER; |
a0d0e21e | 3583 | |
3280af22 NIS |
3584 | SAVESPTR(PL_curpad); |
3585 | PL_curpad = 0; | |
a0d0e21e | 3586 | |
a5f75d66 | 3587 | if (!CvCLONED(cv)) |
748a9306 | 3588 | op_free(CvROOT(cv)); |
79072805 | 3589 | CvROOT(cv) = Nullop; |
8990e307 | 3590 | LEAVE; |
79072805 | 3591 | } |
1d5db326 | 3592 | SvPOK_off((SV*)cv); /* forget prototype */ |
44a8e56a | 3593 | CvFLAGS(cv) = 0; |
8e07c86e AD |
3594 | SvREFCNT_dec(CvGV(cv)); |
3595 | CvGV(cv) = Nullgv; | |
3596 | SvREFCNT_dec(CvOUTSIDE(cv)); | |
3597 | CvOUTSIDE(cv) = Nullcv; | |
3598 | if (CvPADLIST(cv)) { | |
8ebc5c01 | 3599 | /* may be during global destruction */ |
3600 | if (SvREFCNT(CvPADLIST(cv))) { | |
93965878 | 3601 | I32 i = AvFILLp(CvPADLIST(cv)); |
8ebc5c01 | 3602 | while (i >= 0) { |
3603 | SV** svp = av_fetch(CvPADLIST(cv), i--, FALSE); | |
46fc3d4c | 3604 | SV* sv = svp ? *svp : Nullsv; |
3605 | if (!sv) | |
3606 | continue; | |
3280af22 NIS |
3607 | if (sv == (SV*)PL_comppad_name) |
3608 | PL_comppad_name = Nullav; | |
3609 | else if (sv == (SV*)PL_comppad) { | |
3610 | PL_comppad = Nullav; | |
3611 | PL_curpad = Null(SV**); | |
46fc3d4c | 3612 | } |
3613 | SvREFCNT_dec(sv); | |
8ebc5c01 | 3614 | } |
3615 | SvREFCNT_dec((SV*)CvPADLIST(cv)); | |
8e07c86e | 3616 | } |
8e07c86e AD |
3617 | CvPADLIST(cv) = Nullav; |
3618 | } | |
79072805 LW |
3619 | } |
3620 | ||
5f05dabc | 3621 | #ifdef DEBUG_CLOSURES |
76e3520e | 3622 | STATIC void |
ba106d47 | 3623 | cv_dump(CV *cv) |
5f05dabc | 3624 | { |
3625 | CV *outside = CvOUTSIDE(cv); | |
3626 | AV* padlist = CvPADLIST(cv); | |
4fdae800 | 3627 | AV* pad_name; |
3628 | AV* pad; | |
3629 | SV** pname; | |
3630 | SV** ppad; | |
5f05dabc | 3631 | I32 ix; |
3632 | ||
fb73857a | 3633 | PerlIO_printf(Perl_debug_log, "\tCV=0x%lx (%s), OUTSIDE=0x%lx (%s)\n", |
ab50184a CS |
3634 | cv, |
3635 | (CvANON(cv) ? "ANON" | |
6b88bc9c | 3636 | : (cv == PL_main_cv) ? "MAIN" |
33b8ce05 | 3637 | : CvUNIQUE(cv) ? "UNIQUE" |
44a8e56a | 3638 | : CvGV(cv) ? GvNAME(CvGV(cv)) : "UNDEFINED"), |
ab50184a CS |
3639 | outside, |
3640 | (!outside ? "null" | |
3641 | : CvANON(outside) ? "ANON" | |
6b88bc9c | 3642 | : (outside == PL_main_cv) ? "MAIN" |
07055b4c | 3643 | : CvUNIQUE(outside) ? "UNIQUE" |
44a8e56a | 3644 | : CvGV(outside) ? GvNAME(CvGV(outside)) : "UNDEFINED")); |
5f05dabc | 3645 | |
4fdae800 | 3646 | if (!padlist) |
3647 | return; | |
3648 | ||
3649 | pad_name = (AV*)*av_fetch(padlist, 0, FALSE); | |
3650 | pad = (AV*)*av_fetch(padlist, 1, FALSE); | |
3651 | pname = AvARRAY(pad_name); | |
3652 | ppad = AvARRAY(pad); | |
3653 | ||
93965878 | 3654 | for (ix = 1; ix <= AvFILLp(pad_name); ix++) { |
5f05dabc | 3655 | if (SvPOK(pname[ix])) |
fb73857a | 3656 | PerlIO_printf(Perl_debug_log, "\t%4d. 0x%lx (%s\"%s\" %ld-%ld)\n", |
4fdae800 | 3657 | ix, ppad[ix], |
3658 | SvFAKE(pname[ix]) ? "FAKE " : "", | |
3659 | SvPVX(pname[ix]), | |
ab50184a CS |
3660 | (long)I_32(SvNVX(pname[ix])), |
3661 | (long)SvIVX(pname[ix])); | |
5f05dabc | 3662 | } |
3663 | } | |
3664 | #endif /* DEBUG_CLOSURES */ | |
3665 | ||
76e3520e | 3666 | STATIC CV * |
cea2e8a9 | 3667 | S_cv_clone2(pTHX_ CV *proto, CV *outside) |
748a9306 | 3668 | { |
11343788 | 3669 | dTHR; |
748a9306 LW |
3670 | AV* av; |
3671 | I32 ix; | |
3672 | AV* protopadlist = CvPADLIST(proto); | |
3673 | AV* protopad_name = (AV*)*av_fetch(protopadlist, 0, FALSE); | |
3674 | AV* protopad = (AV*)*av_fetch(protopadlist, 1, FALSE); | |
5f05dabc | 3675 | SV** pname = AvARRAY(protopad_name); |
3676 | SV** ppad = AvARRAY(protopad); | |
93965878 NIS |
3677 | I32 fname = AvFILLp(protopad_name); |
3678 | I32 fpad = AvFILLp(protopad); | |
748a9306 LW |
3679 | AV* comppadlist; |
3680 | CV* cv; | |
3681 | ||
07055b4c CS |
3682 | assert(!CvUNIQUE(proto)); |
3683 | ||
748a9306 | 3684 | ENTER; |
3280af22 NIS |
3685 | SAVESPTR(PL_curpad); |
3686 | SAVESPTR(PL_comppad); | |
3687 | SAVESPTR(PL_comppad_name); | |
3688 | SAVESPTR(PL_compcv); | |
748a9306 | 3689 | |
3280af22 | 3690 | cv = PL_compcv = (CV*)NEWSV(1104,0); |
fa83b5b6 | 3691 | sv_upgrade((SV *)cv, SvTYPE(proto)); |
a5f75d66 | 3692 | CvCLONED_on(cv); |
5f05dabc | 3693 | if (CvANON(proto)) |
3694 | CvANON_on(cv); | |
748a9306 | 3695 | |
11343788 | 3696 | #ifdef USE_THREADS |
12ca11f6 | 3697 | New(666, CvMUTEXP(cv), 1, perl_mutex); |
11343788 | 3698 | MUTEX_INIT(CvMUTEXP(cv)); |
11343788 MB |
3699 | CvOWNER(cv) = 0; |
3700 | #endif /* USE_THREADS */ | |
748a9306 | 3701 | CvFILEGV(cv) = CvFILEGV(proto); |
44a8e56a | 3702 | CvGV(cv) = (GV*)SvREFCNT_inc(CvGV(proto)); |
748a9306 LW |
3703 | CvSTASH(cv) = CvSTASH(proto); |
3704 | CvROOT(cv) = CvROOT(proto); | |
3705 | CvSTART(cv) = CvSTART(proto); | |
5f05dabc | 3706 | if (outside) |
3707 | CvOUTSIDE(cv) = (CV*)SvREFCNT_inc(outside); | |
748a9306 | 3708 | |
68dc0745 | 3709 | if (SvPOK(proto)) |
3710 | sv_setpvn((SV*)cv, SvPVX(proto), SvCUR(proto)); | |
3711 | ||
3280af22 | 3712 | PL_comppad_name = newAV(); |
46fc3d4c | 3713 | for (ix = fname; ix >= 0; ix--) |
3280af22 | 3714 | av_store(PL_comppad_name, ix, SvREFCNT_inc(pname[ix])); |
748a9306 | 3715 | |
3280af22 | 3716 | PL_comppad = newAV(); |
748a9306 LW |
3717 | |
3718 | comppadlist = newAV(); | |
3719 | AvREAL_off(comppadlist); | |
3280af22 NIS |
3720 | av_store(comppadlist, 0, (SV*)PL_comppad_name); |
3721 | av_store(comppadlist, 1, (SV*)PL_comppad); | |
748a9306 | 3722 | CvPADLIST(cv) = comppadlist; |
3280af22 NIS |
3723 | av_fill(PL_comppad, AvFILLp(protopad)); |
3724 | PL_curpad = AvARRAY(PL_comppad); | |
748a9306 LW |
3725 | |
3726 | av = newAV(); /* will be @_ */ | |
3727 | av_extend(av, 0); | |
3280af22 | 3728 | av_store(PL_comppad, 0, (SV*)av); |
748a9306 LW |
3729 | AvFLAGS(av) = AVf_REIFY; |
3730 | ||
9607fc9c | 3731 | for (ix = fpad; ix > 0; ix--) { |
3732 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; | |
3280af22 | 3733 | if (namesv && namesv != &PL_sv_undef) { |
aa689395 | 3734 | char *name = SvPVX(namesv); /* XXX */ |
3735 | if (SvFLAGS(namesv) & SVf_FAKE) { /* lexical from outside? */ | |
3736 | I32 off = pad_findlex(name, ix, SvIVX(namesv), | |
2680586e | 3737 | CvOUTSIDE(cv), cxstack_ix, 0, 0); |
5f05dabc | 3738 | if (!off) |
3280af22 | 3739 | PL_curpad[ix] = SvREFCNT_inc(ppad[ix]); |
5f05dabc | 3740 | else if (off != ix) |
cea2e8a9 | 3741 | Perl_croak(aTHX_ "panic: cv_clone: %s", name); |
748a9306 LW |
3742 | } |
3743 | else { /* our own lexical */ | |
aa689395 | 3744 | SV* sv; |
5f05dabc | 3745 | if (*name == '&') { |
3746 | /* anon code -- we'll come back for it */ | |
3747 | sv = SvREFCNT_inc(ppad[ix]); | |
3748 | } | |
3749 | else if (*name == '@') | |
3750 | sv = (SV*)newAV(); | |
748a9306 | 3751 | else if (*name == '%') |
5f05dabc | 3752 | sv = (SV*)newHV(); |
748a9306 | 3753 | else |
5f05dabc | 3754 | sv = NEWSV(0,0); |
3755 | if (!SvPADBUSY(sv)) | |
3756 | SvPADMY_on(sv); | |
3280af22 | 3757 | PL_curpad[ix] = sv; |
748a9306 LW |
3758 | } |
3759 | } | |
3760 | else { | |
aa689395 | 3761 | SV* sv = NEWSV(0,0); |
748a9306 | 3762 | SvPADTMP_on(sv); |
3280af22 | 3763 | PL_curpad[ix] = sv; |
748a9306 LW |
3764 | } |
3765 | } | |
3766 | ||
5f05dabc | 3767 | /* Now that vars are all in place, clone nested closures. */ |
3768 | ||
9607fc9c | 3769 | for (ix = fpad; ix > 0; ix--) { |
3770 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; | |
aa689395 | 3771 | if (namesv |
3280af22 | 3772 | && namesv != &PL_sv_undef |
aa689395 | 3773 | && !(SvFLAGS(namesv) & SVf_FAKE) |
3774 | && *SvPVX(namesv) == '&' | |
5f05dabc | 3775 | && CvCLONE(ppad[ix])) |
3776 | { | |
3777 | CV *kid = cv_clone2((CV*)ppad[ix], cv); | |
3778 | SvREFCNT_dec(ppad[ix]); | |
3779 | CvCLONE_on(kid); | |
3780 | SvPADMY_on(kid); | |
3280af22 | 3781 | PL_curpad[ix] = (SV*)kid; |
748a9306 LW |
3782 | } |
3783 | } | |
3784 | ||
5f05dabc | 3785 | #ifdef DEBUG_CLOSURES |
ab50184a CS |
3786 | PerlIO_printf(Perl_debug_log, "Cloned inside:\n"); |
3787 | cv_dump(outside); | |
3788 | PerlIO_printf(Perl_debug_log, " from:\n"); | |
5f05dabc | 3789 | cv_dump(proto); |
ab50184a | 3790 | PerlIO_printf(Perl_debug_log, " to:\n"); |
5f05dabc | 3791 | cv_dump(cv); |
3792 | #endif | |
3793 | ||
748a9306 LW |
3794 | LEAVE; |
3795 | return cv; | |
3796 | } | |
3797 | ||
3798 | CV * | |
864dbfa3 | 3799 | Perl_cv_clone(pTHX_ CV *proto) |
5f05dabc | 3800 | { |
b099ddc0 GS |
3801 | CV *cv; |
3802 | MUTEX_LOCK(&PL_cred_mutex); /* XXX create separate mutex */ | |
3803 | cv = cv_clone2(proto, CvOUTSIDE(proto)); | |
3804 | MUTEX_UNLOCK(&PL_cred_mutex); /* XXX create separate mutex */ | |
3805 | return cv; | |
5f05dabc | 3806 | } |
3807 | ||
3fe9a6f1 | 3808 | void |
864dbfa3 | 3809 | Perl_cv_ckproto(pTHX_ CV *cv, GV *gv, char *p) |
3fe9a6f1 | 3810 | { |
3811 | if ((!p != !SvPOK(cv)) || (p && strNE(p, SvPVX(cv)))) { | |
46fc3d4c | 3812 | SV* msg = sv_newmortal(); |
3fe9a6f1 | 3813 | SV* name = Nullsv; |
3814 | ||
3815 | if (gv) | |
46fc3d4c | 3816 | gv_efullname3(name = sv_newmortal(), gv, Nullch); |
3817 | sv_setpv(msg, "Prototype mismatch:"); | |
3818 | if (name) | |
cea2e8a9 | 3819 | Perl_sv_catpvf(aTHX_ msg, " sub %_", name); |
3fe9a6f1 | 3820 | if (SvPOK(cv)) |
cea2e8a9 | 3821 | Perl_sv_catpvf(aTHX_ msg, " (%s)", SvPVX(cv)); |
46fc3d4c | 3822 | sv_catpv(msg, " vs "); |
3823 | if (p) | |
cea2e8a9 | 3824 | Perl_sv_catpvf(aTHX_ msg, "(%s)", p); |
46fc3d4c | 3825 | else |
3826 | sv_catpv(msg, "none"); | |
cea2e8a9 | 3827 | Perl_warn(aTHX_ "%_", msg); |
3fe9a6f1 | 3828 | } |
3829 | } | |
3830 | ||
760ac839 | 3831 | SV * |
864dbfa3 | 3832 | Perl_cv_const_sv(pTHX_ CV *cv) |
760ac839 | 3833 | { |
54310121 | 3834 | if (!cv || !SvPOK(cv) || SvCUR(cv)) |
3835 | return Nullsv; | |
fe5e78ed GS |
3836 | return op_const_sv(CvSTART(cv), cv); |
3837 | } | |
760ac839 | 3838 | |
fe5e78ed | 3839 | SV * |
864dbfa3 | 3840 | Perl_op_const_sv(pTHX_ OP *o, CV *cv) |
fe5e78ed GS |
3841 | { |
3842 | SV *sv = Nullsv; | |
3843 | ||
3844 | if(!o) | |
3845 | return Nullsv; | |
3846 | ||
3847 | if(o->op_type == OP_LINESEQ && cLISTOPo->op_first) | |
3848 | o = cLISTOPo->op_first->op_sibling; | |
3849 | ||
3850 | for (; o; o = o->op_next) { | |
54310121 | 3851 | OPCODE type = o->op_type; |
fe5e78ed GS |
3852 | |
3853 | if(sv && o->op_next == o) | |
3854 | return sv; | |
54310121 | 3855 | if (type == OP_NEXTSTATE || type == OP_NULL || type == OP_PUSHMARK) |
3856 | continue; | |
3857 | if (type == OP_LEAVESUB || type == OP_RETURN) | |
3858 | break; | |
3859 | if (sv) | |
3860 | return Nullsv; | |
3861 | if (type == OP_CONST) | |
5dc0d613 | 3862 | sv = cSVOPo->op_sv; |
fe5e78ed | 3863 | else if (type == OP_PADSV && cv) { |
e858de61 MB |
3864 | AV* padav = (AV*)(AvARRAY(CvPADLIST(cv))[1]); |
3865 | sv = padav ? AvARRAY(padav)[o->op_targ] : Nullsv; | |
5aabfad6 | 3866 | if (!sv || (!SvREADONLY(sv) && SvREFCNT(sv) > 1)) |
54310121 | 3867 | return Nullsv; |
760ac839 | 3868 | } |
54310121 | 3869 | else |
3870 | return Nullsv; | |
760ac839 | 3871 | } |
5aabfad6 | 3872 | if (sv) |
3873 | SvREADONLY_on(sv); | |
760ac839 LW |
3874 | return sv; |
3875 | } | |
3876 | ||
748a9306 | 3877 | CV * |
864dbfa3 | 3878 | Perl_newSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *block) |
79072805 | 3879 | { |
11343788 | 3880 | dTHR; |
2d8e6c8d GS |
3881 | STRLEN n_a; |
3882 | char *name = o ? SvPVx(cSVOPo->op_sv, n_a) : Nullch; | |
55d729e4 GS |
3883 | GV *gv = gv_fetchpv(name ? name : "__ANON__", |
3884 | GV_ADDMULTI | (block ? 0 : GV_NOINIT), SVt_PVCV); | |
2d8e6c8d | 3885 | char *ps = proto ? SvPVx(((SVOP*)proto)->op_sv, n_a) : Nullch; |
a2008d6d | 3886 | register CV *cv=0; |
a0d0e21e | 3887 | I32 ix; |
79072805 | 3888 | |
11343788 | 3889 | if (o) |
5dc0d613 | 3890 | SAVEFREEOP(o); |
3fe9a6f1 | 3891 | if (proto) |
3892 | SAVEFREEOP(proto); | |
3893 | ||
55d729e4 GS |
3894 | if (SvTYPE(gv) != SVt_PVGV) { /* Prototype now, and had |
3895 | maximum a prototype before. */ | |
3896 | if (SvTYPE(gv) > SVt_NULL) { | |
3897 | if (!SvPOK((SV*)gv) && !(SvIOK((SV*)gv) && SvIVX((SV*)gv) == -1)) | |
cea2e8a9 | 3898 | Perl_warn(aTHX_ "Runaway prototype"); |
55d729e4 GS |
3899 | cv_ckproto((CV*)gv, NULL, ps); |
3900 | } | |
3901 | if (ps) | |
3902 | sv_setpv((SV*)gv, ps); | |
3903 | else | |
3904 | sv_setiv((SV*)gv, -1); | |
3280af22 NIS |
3905 | SvREFCNT_dec(PL_compcv); |
3906 | cv = PL_compcv = NULL; | |
3907 | PL_sub_generation++; | |
55d729e4 GS |
3908 | goto noblock; |
3909 | } | |
3910 | ||
68dc0745 | 3911 | if (!name || GvCVGEN(gv)) |
3912 | cv = Nullcv; | |
3913 | else if (cv = GvCV(gv)) { | |
3fe9a6f1 | 3914 | cv_ckproto(cv, gv, ps); |
68dc0745 | 3915 | /* already defined (or promised)? */ |
3916 | if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
3917 | SV* const_sv; | |
fe5e78ed | 3918 | bool const_changed = TRUE; |
aa689395 | 3919 | if (!block) { |
3920 | /* just a "sub foo;" when &foo is already defined */ | |
3280af22 | 3921 | SAVEFREESV(PL_compcv); |
aa689395 | 3922 | goto done; |
3923 | } | |
7bac28a0 | 3924 | /* ahem, death to those who redefine active sort subs */ |
3280af22 | 3925 | if (PL_curstackinfo->si_type == PERLSI_SORT && PL_sortcop == CvSTART(cv)) |
cea2e8a9 | 3926 | Perl_croak(aTHX_ "Can't redefine active sort subroutine %s", name); |
fe5e78ed GS |
3927 | if(const_sv = cv_const_sv(cv)) |
3928 | const_changed = sv_cmp(const_sv, op_const_sv(block, Nullcv)); | |
599cee73 PM |
3929 | if ((const_sv && const_changed) || ckWARN(WARN_REDEFINE) |
3930 | && !(CvGV(cv) && GvSTASH(CvGV(cv)) | |
2f34f9d4 IZ |
3931 | && HvNAME(GvSTASH(CvGV(cv))) |
3932 | && strEQ(HvNAME(GvSTASH(CvGV(cv))), | |
3933 | "autouse"))) { | |
3280af22 NIS |
3934 | line_t oldline = PL_curcop->cop_line; |
3935 | PL_curcop->cop_line = PL_copline; | |
cea2e8a9 | 3936 | Perl_warner(aTHX_ WARN_REDEFINE, |
599cee73 PM |
3937 | const_sv ? "Constant subroutine %s redefined" |
3938 | : "Subroutine %s redefined", name); | |
3280af22 | 3939 | PL_curcop->cop_line = oldline; |
79072805 | 3940 | } |
8990e307 | 3941 | SvREFCNT_dec(cv); |
68dc0745 | 3942 | cv = Nullcv; |
79072805 LW |
3943 | } |
3944 | } | |
a0d0e21e | 3945 | if (cv) { /* must reuse cv if autoloaded */ |
4633a7c4 | 3946 | cv_undef(cv); |
3280af22 NIS |
3947 | CvFLAGS(cv) = CvFLAGS(PL_compcv); |
3948 | CvOUTSIDE(cv) = CvOUTSIDE(PL_compcv); | |
3949 | CvOUTSIDE(PL_compcv) = 0; | |
3950 | CvPADLIST(cv) = CvPADLIST(PL_compcv); | |
3951 | CvPADLIST(PL_compcv) = 0; | |
3952 | if (SvREFCNT(PL_compcv) > 1) /* XXX Make closures transit through stub. */ | |
3953 | CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc((SV*)cv); | |
3954 | SvREFCNT_dec(PL_compcv); | |
a0d0e21e LW |
3955 | } |
3956 | else { | |
3280af22 | 3957 | cv = PL_compcv; |
44a8e56a | 3958 | if (name) { |
3959 | GvCV(gv) = cv; | |
3960 | GvCVGEN(gv) = 0; | |
3280af22 | 3961 | PL_sub_generation++; |
44a8e56a | 3962 | } |
a0d0e21e | 3963 | } |
44a8e56a | 3964 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
3280af22 NIS |
3965 | CvFILEGV(cv) = PL_curcop->cop_filegv; |
3966 | CvSTASH(cv) = PL_curstash; | |
11343788 MB |
3967 | #ifdef USE_THREADS |
3968 | CvOWNER(cv) = 0; | |
1cfa4ec7 | 3969 | if (!CvMUTEXP(cv)) { |
f6aaf501 | 3970 | New(666, CvMUTEXP(cv), 1, perl_mutex); |
1cfa4ec7 GS |
3971 | MUTEX_INIT(CvMUTEXP(cv)); |
3972 | } | |
11343788 | 3973 | #endif /* USE_THREADS */ |
8990e307 | 3974 | |
3fe9a6f1 | 3975 | if (ps) |
3976 | sv_setpv((SV*)cv, ps); | |
4633a7c4 | 3977 | |
3280af22 | 3978 | if (PL_error_count) { |
c07a80fd | 3979 | op_free(block); |
3980 | block = Nullop; | |
68dc0745 | 3981 | if (name) { |
3982 | char *s = strrchr(name, ':'); | |
3983 | s = s ? s+1 : name; | |
6d4c2119 CS |
3984 | if (strEQ(s, "BEGIN")) { |
3985 | char *not_safe = | |
3986 | "BEGIN not safe after errors--compilation aborted"; | |
faef0170 | 3987 | if (PL_in_eval & EVAL_KEEPERR) |
cea2e8a9 | 3988 | Perl_croak(aTHX_ not_safe); |
6d4c2119 CS |
3989 | else { |
3990 | /* force display of errors found but not reported */ | |
38a03e6e | 3991 | sv_catpv(ERRSV, not_safe); |
cea2e8a9 | 3992 | Perl_croak(aTHX_ "%s", SvPVx(ERRSV, n_a)); |
6d4c2119 CS |
3993 | } |
3994 | } | |
68dc0745 | 3995 | } |
c07a80fd | 3996 | } |
a0d0e21e | 3997 | if (!block) { |
55d729e4 | 3998 | noblock: |
3280af22 | 3999 | PL_copline = NOLINE; |
a0d0e21e LW |
4000 | LEAVE_SCOPE(floor); |
4001 | return cv; | |
4002 | } | |
4003 | ||
3280af22 NIS |
4004 | if (AvFILLp(PL_comppad_name) < AvFILLp(PL_comppad)) |
4005 | av_store(PL_comppad_name, AvFILLp(PL_comppad), Nullsv); | |
a0d0e21e | 4006 | |
54310121 | 4007 | if (CvCLONE(cv)) { |
3280af22 NIS |
4008 | SV **namep = AvARRAY(PL_comppad_name); |
4009 | for (ix = AvFILLp(PL_comppad); ix > 0; ix--) { | |
54310121 | 4010 | SV *namesv; |
4011 | ||
3280af22 | 4012 | if (SvIMMORTAL(PL_curpad[ix])) |
54310121 | 4013 | continue; |
4014 | /* | |
4015 | * The only things that a clonable function needs in its | |
4016 | * pad are references to outer lexicals and anonymous subs. | |
4017 | * The rest are created anew during cloning. | |
4018 | */ | |
4019 | if (!((namesv = namep[ix]) != Nullsv && | |
3280af22 | 4020 | namesv != &PL_sv_undef && |
54310121 | 4021 | (SvFAKE(namesv) || |
4022 | *SvPVX(namesv) == '&'))) | |
4023 | { | |
3280af22 NIS |
4024 | SvREFCNT_dec(PL_curpad[ix]); |
4025 | PL_curpad[ix] = Nullsv; | |
54310121 | 4026 | } |
4027 | } | |
a0d0e21e | 4028 | } |
54310121 | 4029 | else { |
4030 | AV *av = newAV(); /* Will be @_ */ | |
4031 | av_extend(av, 0); | |
3280af22 | 4032 | av_store(PL_comppad, 0, (SV*)av); |
54310121 | 4033 | AvFLAGS(av) = AVf_REIFY; |
79072805 | 4034 | |
3280af22 NIS |
4035 | for (ix = AvFILLp(PL_comppad); ix > 0; ix--) { |
4036 | if (SvIMMORTAL(PL_curpad[ix])) | |
54310121 | 4037 | continue; |
3280af22 NIS |
4038 | if (!SvPADMY(PL_curpad[ix])) |
4039 | SvPADTMP_on(PL_curpad[ix]); | |
54310121 | 4040 | } |
4041 | } | |
79072805 | 4042 | |
a0d0e21e | 4043 | CvROOT(cv) = newUNOP(OP_LEAVESUB, 0, scalarseq(block)); |
79072805 LW |
4044 | CvSTART(cv) = LINKLIST(CvROOT(cv)); |
4045 | CvROOT(cv)->op_next = 0; | |
4046 | peep(CvSTART(cv)); | |
93a17b20 | 4047 | |
44a8e56a | 4048 | if (name) { |
4049 | char *s; | |
4050 | ||
3280af22 | 4051 | if (PERLDB_SUBLINE && PL_curstash != PL_debstash) { |
46fc3d4c | 4052 | SV *sv = NEWSV(0,0); |
44a8e56a | 4053 | SV *tmpstr = sv_newmortal(); |
549bb64a | 4054 | GV *db_postponed = gv_fetchpv("DB::postponed", GV_ADDMULTI, SVt_PVHV); |
44a8e56a | 4055 | CV *cv; |
4056 | HV *hv; | |
4057 | ||
cea2e8a9 | 4058 | Perl_sv_setpvf(aTHX_ sv, "%_:%ld-%ld", |
3280af22 NIS |
4059 | GvSV(PL_curcop->cop_filegv), |
4060 | (long)PL_subline, (long)PL_curcop->cop_line); | |
44a8e56a | 4061 | gv_efullname3(tmpstr, gv, Nullch); |
3280af22 | 4062 | hv_store(GvHV(PL_DBsub), SvPVX(tmpstr), SvCUR(tmpstr), sv, 0); |
44a8e56a | 4063 | hv = GvHVn(db_postponed); |
9607fc9c | 4064 | if (HvFILL(hv) > 0 && hv_exists(hv, SvPVX(tmpstr), SvCUR(tmpstr)) |
4065 | && (cv = GvCV(db_postponed))) { | |
44a8e56a | 4066 | dSP; |
924508f0 | 4067 | PUSHMARK(SP); |
44a8e56a | 4068 | XPUSHs(tmpstr); |
4069 | PUTBACK; | |
864dbfa3 | 4070 | call_sv((SV*)cv, G_DISCARD); |
44a8e56a | 4071 | } |
4072 | } | |
79072805 | 4073 | |
44a8e56a | 4074 | if ((s = strrchr(name,':'))) |
28757baa | 4075 | s++; |
4076 | else | |
4077 | s = name; | |
68dc0745 | 4078 | if (strEQ(s, "BEGIN")) { |
3280af22 | 4079 | I32 oldscope = PL_scopestack_ix; |
28757baa | 4080 | ENTER; |
3280af22 NIS |
4081 | SAVESPTR(PL_compiling.cop_filegv); |
4082 | SAVEI16(PL_compiling.cop_line); | |
4083 | save_svref(&PL_rs); | |
4084 | sv_setsv(PL_rs, PL_nrs); | |
28757baa | 4085 | |
3280af22 NIS |
4086 | if (!PL_beginav) |
4087 | PL_beginav = newAV(); | |
28757baa | 4088 | DEBUG_x( dump_sub(gv) ); |
3280af22 | 4089 | av_push(PL_beginav, (SV *)cv); |
28757baa | 4090 | GvCV(gv) = 0; |
3280af22 | 4091 | call_list(oldscope, PL_beginav); |
a6006777 | 4092 | |
3280af22 | 4093 | PL_curcop = &PL_compiling; |
a0ed51b3 | 4094 | PL_compiling.op_private = PL_hints; |
28757baa | 4095 | LEAVE; |
4096 | } | |
3280af22 NIS |
4097 | else if (strEQ(s, "END") && !PL_error_count) { |
4098 | if (!PL_endav) | |
4099 | PL_endav = newAV(); | |
4100 | av_unshift(PL_endav, 1); | |
4101 | av_store(PL_endav, 0, (SV *)cv); | |
28757baa | 4102 | GvCV(gv) = 0; |
4103 | } | |
3280af22 NIS |
4104 | else if (strEQ(s, "INIT") && !PL_error_count) { |
4105 | if (!PL_initav) | |
4106 | PL_initav = newAV(); | |
4107 | av_push(PL_initav, SvREFCNT_inc(cv)); | |
b7aad4fe | 4108 | GvCV(gv) = 0; |
ae77835f | 4109 | } |
79072805 | 4110 | } |
a6006777 | 4111 | |
aa689395 | 4112 | done: |
3280af22 | 4113 | PL_copline = NOLINE; |
8990e307 | 4114 | LEAVE_SCOPE(floor); |
a0d0e21e | 4115 | return cv; |
79072805 LW |
4116 | } |
4117 | ||
b099ddc0 | 4118 | /* XXX unsafe for threads if eval_owner isn't held */ |
5476c433 | 4119 | void |
864dbfa3 | 4120 | Perl_newCONSTSUB(pTHX_ HV *stash, char *name, SV *sv) |
5476c433 JD |
4121 | { |
4122 | dTHR; | |
3280af22 NIS |
4123 | U32 oldhints = PL_hints; |
4124 | HV *old_cop_stash = PL_curcop->cop_stash; | |
4125 | HV *old_curstash = PL_curstash; | |
4126 | line_t oldline = PL_curcop->cop_line; | |
4127 | PL_curcop->cop_line = PL_copline; | |
5476c433 | 4128 | |
3280af22 | 4129 | PL_hints &= ~HINT_BLOCK_SCOPE; |
5476c433 | 4130 | if(stash) |
3280af22 | 4131 | PL_curstash = PL_curcop->cop_stash = stash; |
5476c433 JD |
4132 | |
4133 | newSUB( | |
be24f278 | 4134 | start_subparse(FALSE, 0), |
5476c433 | 4135 | newSVOP(OP_CONST, 0, newSVpv(name,0)), |
6b88bc9c | 4136 | newSVOP(OP_CONST, 0, &PL_sv_no), /* SvPV(&PL_sv_no) == "" -- GMB */ |
5476c433 JD |
4137 | newSTATEOP(0, Nullch, newSVOP(OP_CONST, 0, sv)) |
4138 | ); | |
4139 | ||
3280af22 NIS |
4140 | PL_hints = oldhints; |
4141 | PL_curcop->cop_stash = old_cop_stash; | |
4142 | PL_curstash = old_curstash; | |
4143 | PL_curcop->cop_line = oldline; | |
5476c433 JD |
4144 | } |
4145 | ||
57d3b86d | 4146 | CV * |
864dbfa3 | 4147 | Perl_newXS(pTHX_ char *name, XSUBADDR_t subaddr, char *filename) |
a0d0e21e | 4148 | { |
11343788 | 4149 | dTHR; |
44a8e56a | 4150 | GV *gv = gv_fetchpv(name ? name : "__ANON__", GV_ADDMULTI, SVt_PVCV); |
79072805 | 4151 | register CV *cv; |
44a8e56a | 4152 | |
4153 | if (cv = (name ? GvCV(gv) : Nullcv)) { | |
4154 | if (GvCVGEN(gv)) { | |
4155 | /* just a cached method */ | |
4156 | SvREFCNT_dec(cv); | |
4157 | cv = 0; | |
4158 | } | |
4159 | else if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
4160 | /* already defined (or promised) */ | |
599cee73 | 4161 | if (ckWARN(WARN_REDEFINE) && !(CvGV(cv) && GvSTASH(CvGV(cv)) |
2f34f9d4 IZ |
4162 | && HvNAME(GvSTASH(CvGV(cv))) |
4163 | && strEQ(HvNAME(GvSTASH(CvGV(cv))), "autouse"))) { | |
3280af22 | 4164 | line_t oldline = PL_curcop->cop_line; |
51f6edd3 GS |
4165 | if (PL_copline != NOLINE) |
4166 | PL_curcop->cop_line = PL_copline; | |
cea2e8a9 | 4167 | Perl_warner(aTHX_ WARN_REDEFINE, "Subroutine %s redefined",name); |
3280af22 | 4168 | PL_curcop->cop_line = oldline; |
a0d0e21e LW |
4169 | } |
4170 | SvREFCNT_dec(cv); | |
4171 | cv = 0; | |
79072805 | 4172 | } |
79072805 | 4173 | } |
44a8e56a | 4174 | |
4175 | if (cv) /* must reuse cv if autoloaded */ | |
4176 | cv_undef(cv); | |
a0d0e21e LW |
4177 | else { |
4178 | cv = (CV*)NEWSV(1105,0); | |
4179 | sv_upgrade((SV *)cv, SVt_PVCV); | |
44a8e56a | 4180 | if (name) { |
4181 | GvCV(gv) = cv; | |
4182 | GvCVGEN(gv) = 0; | |
3280af22 | 4183 | PL_sub_generation++; |
44a8e56a | 4184 | } |
a0d0e21e | 4185 | } |
5196be3e | 4186 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
11343788 | 4187 | #ifdef USE_THREADS |
12ca11f6 | 4188 | New(666, CvMUTEXP(cv), 1, perl_mutex); |
11343788 | 4189 | MUTEX_INIT(CvMUTEXP(cv)); |
11343788 MB |
4190 | CvOWNER(cv) = 0; |
4191 | #endif /* USE_THREADS */ | |
79072805 | 4192 | CvFILEGV(cv) = gv_fetchfile(filename); |
a0d0e21e | 4193 | CvXSUB(cv) = subaddr; |
44a8e56a | 4194 | |
28757baa | 4195 | if (name) { |
4196 | char *s = strrchr(name,':'); | |
4197 | if (s) | |
4198 | s++; | |
4199 | else | |
4200 | s = name; | |
4201 | if (strEQ(s, "BEGIN")) { | |
3280af22 NIS |
4202 | if (!PL_beginav) |
4203 | PL_beginav = newAV(); | |
4204 | av_push(PL_beginav, (SV *)cv); | |
44a8e56a | 4205 | GvCV(gv) = 0; |
28757baa | 4206 | } |
4207 | else if (strEQ(s, "END")) { | |
3280af22 NIS |
4208 | if (!PL_endav) |
4209 | PL_endav = newAV(); | |
4210 | av_unshift(PL_endav, 1); | |
4211 | av_store(PL_endav, 0, (SV *)cv); | |
44a8e56a | 4212 | GvCV(gv) = 0; |
28757baa | 4213 | } |
7d07dbc2 | 4214 | else if (strEQ(s, "INIT")) { |
3280af22 NIS |
4215 | if (!PL_initav) |
4216 | PL_initav = newAV(); | |
4217 | av_push(PL_initav, (SV *)cv); | |
f8f842e4 | 4218 | GvCV(gv) = 0; |
ae77835f | 4219 | } |
28757baa | 4220 | } |
8990e307 | 4221 | else |
a5f75d66 | 4222 | CvANON_on(cv); |
44a8e56a | 4223 | |
a0d0e21e | 4224 | return cv; |
79072805 LW |
4225 | } |
4226 | ||
4227 | void | |
864dbfa3 | 4228 | Perl_newFORM(pTHX_ I32 floor, OP *o, OP *block) |
79072805 | 4229 | { |
11343788 | 4230 | dTHR; |
79072805 LW |
4231 | register CV *cv; |
4232 | char *name; | |
4233 | GV *gv; | |
a0d0e21e | 4234 | I32 ix; |
2d8e6c8d | 4235 | STRLEN n_a; |
79072805 | 4236 | |
11343788 | 4237 | if (o) |
2d8e6c8d | 4238 | name = SvPVx(cSVOPo->op_sv, n_a); |
79072805 LW |
4239 | else |
4240 | name = "STDOUT"; | |
85e6fe83 | 4241 | gv = gv_fetchpv(name,TRUE, SVt_PVFM); |
a5f75d66 | 4242 | GvMULTI_on(gv); |
79072805 | 4243 | if (cv = GvFORM(gv)) { |
599cee73 | 4244 | if (ckWARN(WARN_REDEFINE)) { |
3280af22 | 4245 | line_t oldline = PL_curcop->cop_line; |
79072805 | 4246 | |
3280af22 | 4247 | PL_curcop->cop_line = PL_copline; |
cea2e8a9 | 4248 | Perl_warner(aTHX_ WARN_REDEFINE, "Format %s redefined",name); |
3280af22 | 4249 | PL_curcop->cop_line = oldline; |
79072805 | 4250 | } |
8990e307 | 4251 | SvREFCNT_dec(cv); |
79072805 | 4252 | } |
3280af22 | 4253 | cv = PL_compcv; |
79072805 | 4254 | GvFORM(gv) = cv; |
44a8e56a | 4255 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
3280af22 | 4256 | CvFILEGV(cv) = PL_curcop->cop_filegv; |
79072805 | 4257 | |
3280af22 NIS |
4258 | for (ix = AvFILLp(PL_comppad); ix > 0; ix--) { |
4259 | if (!SvPADMY(PL_curpad[ix]) && !SvIMMORTAL(PL_curpad[ix])) | |
4260 | SvPADTMP_on(PL_curpad[ix]); | |
a0d0e21e LW |
4261 | } |
4262 | ||
79072805 LW |
4263 | CvROOT(cv) = newUNOP(OP_LEAVEWRITE, 0, scalarseq(block)); |
4264 | CvSTART(cv) = LINKLIST(CvROOT(cv)); | |
4265 | CvROOT(cv)->op_next = 0; | |
4266 | peep(CvSTART(cv)); | |
11343788 | 4267 | op_free(o); |
3280af22 | 4268 | PL_copline = NOLINE; |
8990e307 | 4269 | LEAVE_SCOPE(floor); |
79072805 LW |
4270 | } |
4271 | ||
4272 | OP * | |
864dbfa3 | 4273 | Perl_newANONLIST(pTHX_ OP *o) |
79072805 | 4274 | { |
93a17b20 | 4275 | return newUNOP(OP_REFGEN, 0, |
11343788 | 4276 | mod(list(convert(OP_ANONLIST, 0, o)), OP_REFGEN)); |
79072805 LW |
4277 | } |
4278 | ||
4279 | OP * | |
864dbfa3 | 4280 | Perl_newANONHASH(pTHX_ OP *o) |
79072805 | 4281 | { |
93a17b20 | 4282 | return newUNOP(OP_REFGEN, 0, |
11343788 | 4283 | mod(list(convert(OP_ANONHASH, 0, o)), OP_REFGEN)); |
a0d0e21e LW |
4284 | } |
4285 | ||
4286 | OP * | |
864dbfa3 | 4287 | Perl_newANONSUB(pTHX_ I32 floor, OP *proto, OP *block) |
a0d0e21e LW |
4288 | { |
4289 | return newUNOP(OP_REFGEN, 0, | |
4633a7c4 | 4290 | newSVOP(OP_ANONCODE, 0, (SV*)newSUB(floor, 0, proto, block))); |
79072805 LW |
4291 | } |
4292 | ||
4293 | OP * | |
864dbfa3 | 4294 | Perl_oopsAV(pTHX_ OP *o) |
79072805 | 4295 | { |
ed6116ce LW |
4296 | switch (o->op_type) { |
4297 | case OP_PADSV: | |
4298 | o->op_type = OP_PADAV; | |
22c35a8c | 4299 | o->op_ppaddr = PL_ppaddr[OP_PADAV]; |
51e247a3 | 4300 | return ref(o, OP_RV2AV); |
ed6116ce LW |
4301 | |
4302 | case OP_RV2SV: | |
79072805 | 4303 | o->op_type = OP_RV2AV; |
22c35a8c | 4304 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
79072805 | 4305 | ref(o, OP_RV2AV); |
ed6116ce LW |
4306 | break; |
4307 | ||
4308 | default: | |
cea2e8a9 | 4309 | Perl_warn(aTHX_ "oops: oopsAV"); |
ed6116ce LW |
4310 | break; |
4311 | } | |
79072805 LW |
4312 | return o; |
4313 | } | |
4314 | ||
4315 | OP * | |
864dbfa3 | 4316 | Perl_oopsHV(pTHX_ OP *o) |
79072805 | 4317 | { |
ed6116ce LW |
4318 | switch (o->op_type) { |
4319 | case OP_PADSV: | |
4320 | case OP_PADAV: | |
4321 | o->op_type = OP_PADHV; | |
22c35a8c | 4322 | o->op_ppaddr = PL_ppaddr[OP_PADHV]; |
51e247a3 | 4323 | return ref(o, OP_RV2HV); |
ed6116ce LW |
4324 | |
4325 | case OP_RV2SV: | |
4326 | case OP_RV2AV: | |
79072805 | 4327 | o->op_type = OP_RV2HV; |
22c35a8c | 4328 | o->op_ppaddr = PL_ppaddr[OP_RV2HV]; |
79072805 | 4329 | ref(o, OP_RV2HV); |
ed6116ce LW |
4330 | break; |
4331 | ||
4332 | default: | |
cea2e8a9 | 4333 | Perl_warn(aTHX_ "oops: oopsHV"); |
ed6116ce LW |
4334 | break; |
4335 | } | |
79072805 LW |
4336 | return o; |
4337 | } | |
4338 | ||
4339 | OP * | |
864dbfa3 | 4340 | Perl_newAVREF(pTHX_ OP *o) |
79072805 | 4341 | { |
ed6116ce LW |
4342 | if (o->op_type == OP_PADANY) { |
4343 | o->op_type = OP_PADAV; | |
22c35a8c | 4344 | o->op_ppaddr = PL_ppaddr[OP_PADAV]; |
93a17b20 | 4345 | return o; |
ed6116ce | 4346 | } |
79072805 LW |
4347 | return newUNOP(OP_RV2AV, 0, scalar(o)); |
4348 | } | |
4349 | ||
4350 | OP * | |
864dbfa3 | 4351 | Perl_newGVREF(pTHX_ I32 type, OP *o) |
79072805 | 4352 | { |
82092f1d | 4353 | if (type == OP_MAPSTART || type == OP_GREPSTART || type == OP_SORT) |
a0d0e21e | 4354 | return newUNOP(OP_NULL, 0, o); |
748a9306 | 4355 | return ref(newUNOP(OP_RV2GV, OPf_REF, o), type); |
79072805 LW |
4356 | } |
4357 | ||
4358 | OP * | |
864dbfa3 | 4359 | Perl_newHVREF(pTHX_ OP *o) |
79072805 | 4360 | { |
ed6116ce LW |
4361 | if (o->op_type == OP_PADANY) { |
4362 | o->op_type = OP_PADHV; | |
22c35a8c | 4363 | o->op_ppaddr = PL_ppaddr[OP_PADHV]; |
93a17b20 | 4364 | return o; |
ed6116ce | 4365 | } |
79072805 LW |
4366 | return newUNOP(OP_RV2HV, 0, scalar(o)); |
4367 | } | |
4368 | ||
4369 | OP * | |
864dbfa3 | 4370 | Perl_oopsCV(pTHX_ OP *o) |
79072805 | 4371 | { |
cea2e8a9 | 4372 | Perl_croak(aTHX_ "NOT IMPL LINE %d",__LINE__); |
79072805 LW |
4373 | /* STUB */ |
4374 | return o; | |
4375 | } | |
4376 | ||
4377 | OP * | |
864dbfa3 | 4378 | Perl_newCVREF(pTHX_ I32 flags, OP *o) |
79072805 | 4379 | { |
c07a80fd | 4380 | return newUNOP(OP_RV2CV, flags, scalar(o)); |
79072805 LW |
4381 | } |
4382 | ||
4383 | OP * | |
864dbfa3 | 4384 | Perl_newSVREF(pTHX_ OP *o) |
79072805 | 4385 | { |
ed6116ce LW |
4386 | if (o->op_type == OP_PADANY) { |
4387 | o->op_type = OP_PADSV; | |
22c35a8c | 4388 | o->op_ppaddr = PL_ppaddr[OP_PADSV]; |
93a17b20 | 4389 | return o; |
ed6116ce | 4390 | } |
224a4551 MB |
4391 | else if (o->op_type == OP_THREADSV && !(o->op_flags & OPpDONE_SVREF)) { |
4392 | o->op_flags |= OPpDONE_SVREF; | |
a863c7d1 | 4393 | return o; |
224a4551 | 4394 | } |
79072805 LW |
4395 | return newUNOP(OP_RV2SV, 0, scalar(o)); |
4396 | } | |
4397 | ||
4398 | /* Check routines. */ | |
4399 | ||
4400 | OP * | |
cea2e8a9 | 4401 | Perl_ck_anoncode(pTHX_ OP *o) |
5f05dabc | 4402 | { |
178c6305 CS |
4403 | PADOFFSET ix; |
4404 | SV* name; | |
4405 | ||
4406 | name = NEWSV(1106,0); | |
4407 | sv_upgrade(name, SVt_PVNV); | |
4408 | sv_setpvn(name, "&", 1); | |
4409 | SvIVX(name) = -1; | |
4410 | SvNVX(name) = 1; | |
5dc0d613 | 4411 | ix = pad_alloc(o->op_type, SVs_PADMY); |
3280af22 NIS |
4412 | av_store(PL_comppad_name, ix, name); |
4413 | av_store(PL_comppad, ix, cSVOPo->op_sv); | |
5dc0d613 MB |
4414 | SvPADMY_on(cSVOPo->op_sv); |
4415 | cSVOPo->op_sv = Nullsv; | |
4416 | cSVOPo->op_targ = ix; | |
4417 | return o; | |
5f05dabc | 4418 | } |
4419 | ||
4420 | OP * | |
cea2e8a9 | 4421 | Perl_ck_bitop(pTHX_ OP *o) |
55497cff | 4422 | { |
3280af22 | 4423 | o->op_private = PL_hints; |
5dc0d613 | 4424 | return o; |
55497cff | 4425 | } |
4426 | ||
4427 | OP * | |
cea2e8a9 | 4428 | Perl_ck_concat(pTHX_ OP *o) |
79072805 | 4429 | { |
11343788 MB |
4430 | if (cUNOPo->op_first->op_type == OP_CONCAT) |
4431 | o->op_flags |= OPf_STACKED; | |
4432 | return o; | |
79072805 LW |
4433 | } |
4434 | ||
4435 | OP * | |
cea2e8a9 | 4436 | Perl_ck_spair(pTHX_ OP *o) |
79072805 | 4437 | { |
11343788 | 4438 | if (o->op_flags & OPf_KIDS) { |
79072805 | 4439 | OP* newop; |
a0d0e21e | 4440 | OP* kid; |
5dc0d613 MB |
4441 | OPCODE type = o->op_type; |
4442 | o = modkids(ck_fun(o), type); | |
11343788 | 4443 | kid = cUNOPo->op_first; |
a0d0e21e LW |
4444 | newop = kUNOP->op_first->op_sibling; |
4445 | if (newop && | |
4446 | (newop->op_sibling || | |
22c35a8c | 4447 | !(PL_opargs[newop->op_type] & OA_RETSCALAR) || |
a0d0e21e LW |
4448 | newop->op_type == OP_PADAV || newop->op_type == OP_PADHV || |
4449 | newop->op_type == OP_RV2AV || newop->op_type == OP_RV2HV)) { | |
aeea060c | 4450 | |
11343788 | 4451 | return o; |
a0d0e21e LW |
4452 | } |
4453 | op_free(kUNOP->op_first); | |
4454 | kUNOP->op_first = newop; | |
4455 | } | |
22c35a8c | 4456 | o->op_ppaddr = PL_ppaddr[++o->op_type]; |
11343788 | 4457 | return ck_fun(o); |
a0d0e21e LW |
4458 | } |
4459 | ||
4460 | OP * | |
cea2e8a9 | 4461 | Perl_ck_delete(pTHX_ OP *o) |
a0d0e21e | 4462 | { |
11343788 | 4463 | o = ck_fun(o); |
5dc0d613 | 4464 | o->op_private = 0; |
11343788 MB |
4465 | if (o->op_flags & OPf_KIDS) { |
4466 | OP *kid = cUNOPo->op_first; | |
5f05dabc | 4467 | if (kid->op_type == OP_HSLICE) |
5dc0d613 | 4468 | o->op_private |= OPpSLICE; |
5f05dabc | 4469 | else if (kid->op_type != OP_HELEM) |
cea2e8a9 | 4470 | Perl_croak(aTHX_ "%s argument is not a HASH element or slice", |
22c35a8c | 4471 | PL_op_desc[o->op_type]); |
a0d0e21e | 4472 | null(kid); |
79072805 | 4473 | } |
11343788 | 4474 | return o; |
79072805 LW |
4475 | } |
4476 | ||
4477 | OP * | |
cea2e8a9 | 4478 | Perl_ck_eof(pTHX_ OP *o) |
79072805 | 4479 | { |
11343788 | 4480 | I32 type = o->op_type; |
79072805 | 4481 | |
11343788 MB |
4482 | if (o->op_flags & OPf_KIDS) { |
4483 | if (cLISTOPo->op_first->op_type == OP_STUB) { | |
4484 | op_free(o); | |
4485 | o = newUNOP(type, OPf_SPECIAL, | |
d58bf5aa | 4486 | newGVOP(OP_GV, 0, gv_fetchpv("main::ARGV", TRUE, SVt_PVAV))); |
8990e307 | 4487 | } |
11343788 | 4488 | return ck_fun(o); |
79072805 | 4489 | } |
11343788 | 4490 | return o; |
79072805 LW |
4491 | } |
4492 | ||
4493 | OP * | |
cea2e8a9 | 4494 | Perl_ck_eval(pTHX_ OP *o) |
79072805 | 4495 | { |
3280af22 | 4496 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 MB |
4497 | if (o->op_flags & OPf_KIDS) { |
4498 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 | 4499 | |
93a17b20 | 4500 | if (!kid) { |
11343788 MB |
4501 | o->op_flags &= ~OPf_KIDS; |
4502 | null(o); | |
79072805 LW |
4503 | } |
4504 | else if (kid->op_type == OP_LINESEQ) { | |
4505 | LOGOP *enter; | |
4506 | ||
11343788 MB |
4507 | kid->op_next = o->op_next; |
4508 | cUNOPo->op_first = 0; | |
4509 | op_free(o); | |
79072805 | 4510 | |
b7dc083c | 4511 | NewOp(1101, enter, 1, LOGOP); |
79072805 | 4512 | enter->op_type = OP_ENTERTRY; |
22c35a8c | 4513 | enter->op_ppaddr = PL_ppaddr[OP_ENTERTRY]; |
79072805 LW |
4514 | enter->op_private = 0; |
4515 | ||
4516 | /* establish postfix order */ | |
4517 | enter->op_next = (OP*)enter; | |
4518 | ||
11343788 MB |
4519 | o = prepend_elem(OP_LINESEQ, (OP*)enter, (OP*)kid); |
4520 | o->op_type = OP_LEAVETRY; | |
22c35a8c | 4521 | o->op_ppaddr = PL_ppaddr[OP_LEAVETRY]; |
11343788 MB |
4522 | enter->op_other = o; |
4523 | return o; | |
79072805 | 4524 | } |
c7cc6f1c | 4525 | else |
473986ff | 4526 | scalar((OP*)kid); |
79072805 LW |
4527 | } |
4528 | else { | |
11343788 | 4529 | op_free(o); |
54b9620d | 4530 | o = newUNOP(OP_ENTEREVAL, 0, newDEFSVOP()); |
79072805 | 4531 | } |
3280af22 | 4532 | o->op_targ = (PADOFFSET)PL_hints; |
11343788 | 4533 | return o; |
79072805 LW |
4534 | } |
4535 | ||
4536 | OP * | |
cea2e8a9 | 4537 | Perl_ck_exec(pTHX_ OP *o) |
79072805 LW |
4538 | { |
4539 | OP *kid; | |
11343788 MB |
4540 | if (o->op_flags & OPf_STACKED) { |
4541 | o = ck_fun(o); | |
4542 | kid = cUNOPo->op_first->op_sibling; | |
8990e307 LW |
4543 | if (kid->op_type == OP_RV2GV) |
4544 | null(kid); | |
79072805 | 4545 | } |
463ee0b2 | 4546 | else |
11343788 MB |
4547 | o = listkids(o); |
4548 | return o; | |
79072805 LW |
4549 | } |
4550 | ||
4551 | OP * | |
cea2e8a9 | 4552 | Perl_ck_exists(pTHX_ OP *o) |
5f05dabc | 4553 | { |
5196be3e MB |
4554 | o = ck_fun(o); |
4555 | if (o->op_flags & OPf_KIDS) { | |
4556 | OP *kid = cUNOPo->op_first; | |
5f05dabc | 4557 | if (kid->op_type != OP_HELEM) |
cea2e8a9 | 4558 | Perl_croak(aTHX_ "%s argument is not a HASH element", PL_op_desc[o->op_type]); |
5f05dabc | 4559 | null(kid); |
4560 | } | |
5196be3e | 4561 | return o; |
5f05dabc | 4562 | } |
4563 | ||
22c35a8c | 4564 | #if 0 |
5f05dabc | 4565 | OP * |
cea2e8a9 | 4566 | Perl_ck_gvconst(pTHX_ register OP *o) |
79072805 LW |
4567 | { |
4568 | o = fold_constants(o); | |
4569 | if (o->op_type == OP_CONST) | |
4570 | o->op_type = OP_GV; | |
4571 | return o; | |
4572 | } | |
22c35a8c | 4573 | #endif |
79072805 LW |
4574 | |
4575 | OP * | |
cea2e8a9 | 4576 | Perl_ck_rvconst(pTHX_ register OP *o) |
79072805 | 4577 | { |
11343788 MB |
4578 | dTHR; |
4579 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
85e6fe83 | 4580 | |
3280af22 | 4581 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
79072805 | 4582 | if (kid->op_type == OP_CONST) { |
44a8e56a | 4583 | char *name; |
4584 | int iscv; | |
4585 | GV *gv; | |
779c5bc9 | 4586 | SV *kidsv = kid->op_sv; |
2d8e6c8d | 4587 | STRLEN n_a; |
44a8e56a | 4588 | |
779c5bc9 GS |
4589 | /* Is it a constant from cv_const_sv()? */ |
4590 | if (SvROK(kidsv) && SvREADONLY(kidsv)) { | |
4591 | SV *rsv = SvRV(kidsv); | |
4592 | int svtype = SvTYPE(rsv); | |
4593 | char *badtype = Nullch; | |
4594 | ||
4595 | switch (o->op_type) { | |
4596 | case OP_RV2SV: | |
4597 | if (svtype > SVt_PVMG) | |
4598 | badtype = "a SCALAR"; | |
4599 | break; | |
4600 | case OP_RV2AV: | |
4601 | if (svtype != SVt_PVAV) | |
4602 | badtype = "an ARRAY"; | |
4603 | break; | |
4604 | case OP_RV2HV: | |
4605 | if (svtype != SVt_PVHV) { | |
4606 | if (svtype == SVt_PVAV) { /* pseudohash? */ | |
4607 | SV **ksv = av_fetch((AV*)rsv, 0, FALSE); | |
4608 | if (ksv && SvROK(*ksv) | |
4609 | && SvTYPE(SvRV(*ksv)) == SVt_PVHV) | |
4610 | { | |
4611 | break; | |
4612 | } | |
4613 | } | |
4614 | badtype = "a HASH"; | |
4615 | } | |
4616 | break; | |
4617 | case OP_RV2CV: | |
4618 | if (svtype != SVt_PVCV) | |
4619 | badtype = "a CODE"; | |
4620 | break; | |
4621 | } | |
4622 | if (badtype) | |
cea2e8a9 | 4623 | Perl_croak(aTHX_ "Constant is not %s reference", badtype); |
779c5bc9 GS |
4624 | return o; |
4625 | } | |
2d8e6c8d | 4626 | name = SvPV(kidsv, n_a); |
3280af22 | 4627 | if ((PL_hints & HINT_STRICT_REFS) && (kid->op_private & OPpCONST_BARE)) { |
44a8e56a | 4628 | char *badthing = Nullch; |
5dc0d613 | 4629 | switch (o->op_type) { |
44a8e56a | 4630 | case OP_RV2SV: |
4631 | badthing = "a SCALAR"; | |
4632 | break; | |
4633 | case OP_RV2AV: | |
4634 | badthing = "an ARRAY"; | |
4635 | break; | |
4636 | case OP_RV2HV: | |
4637 | badthing = "a HASH"; | |
4638 | break; | |
4639 | } | |
4640 | if (badthing) | |
cea2e8a9 | 4641 | Perl_croak(aTHX_ |
44a8e56a | 4642 | "Can't use bareword (\"%s\") as %s ref while \"strict refs\" in use", |
4643 | name, badthing); | |
4644 | } | |
93233ece CS |
4645 | /* |
4646 | * This is a little tricky. We only want to add the symbol if we | |
4647 | * didn't add it in the lexer. Otherwise we get duplicate strict | |
4648 | * warnings. But if we didn't add it in the lexer, we must at | |
4649 | * least pretend like we wanted to add it even if it existed before, | |
4650 | * or we get possible typo warnings. OPpCONST_ENTERED says | |
4651 | * whether the lexer already added THIS instance of this symbol. | |
4652 | */ | |
5196be3e | 4653 | iscv = (o->op_type == OP_RV2CV) * 2; |
93233ece | 4654 | do { |
44a8e56a | 4655 | gv = gv_fetchpv(name, |
748a9306 | 4656 | iscv | !(kid->op_private & OPpCONST_ENTERED), |
a0d0e21e LW |
4657 | iscv |
4658 | ? SVt_PVCV | |
11343788 | 4659 | : o->op_type == OP_RV2SV |
a0d0e21e | 4660 | ? SVt_PV |
11343788 | 4661 | : o->op_type == OP_RV2AV |
a0d0e21e | 4662 | ? SVt_PVAV |
11343788 | 4663 | : o->op_type == OP_RV2HV |
a0d0e21e LW |
4664 | ? SVt_PVHV |
4665 | : SVt_PVGV); | |
93233ece CS |
4666 | } while (!gv && !(kid->op_private & OPpCONST_ENTERED) && !iscv++); |
4667 | if (gv) { | |
4668 | kid->op_type = OP_GV; | |
4669 | SvREFCNT_dec(kid->op_sv); | |
4670 | kid->op_sv = SvREFCNT_inc(gv); | |
a0d0e21e | 4671 | } |
79072805 | 4672 | } |
11343788 | 4673 | return o; |
79072805 LW |
4674 | } |
4675 | ||
4676 | OP * | |
cea2e8a9 | 4677 | Perl_ck_ftst(pTHX_ OP *o) |
79072805 | 4678 | { |
11343788 MB |
4679 | dTHR; |
4680 | I32 type = o->op_type; | |
79072805 | 4681 | |
11343788 MB |
4682 | if (o->op_flags & OPf_REF) |
4683 | return o; | |
79072805 | 4684 | |
108ed793 | 4685 | if (o->op_flags & OPf_KIDS && cUNOPo->op_first->op_type != OP_STUB) { |
11343788 | 4686 | SVOP *kid = (SVOP*)cUNOPo->op_first; |
79072805 LW |
4687 | |
4688 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
2d8e6c8d | 4689 | STRLEN n_a; |
a0d0e21e | 4690 | OP *newop = newGVOP(type, OPf_REF, |
2d8e6c8d | 4691 | gv_fetchpv(SvPVx(kid->op_sv, n_a), TRUE, SVt_PVIO)); |
11343788 | 4692 | op_free(o); |
79072805 LW |
4693 | return newop; |
4694 | } | |
4695 | } | |
4696 | else { | |
11343788 | 4697 | op_free(o); |
79072805 | 4698 | if (type == OP_FTTTY) |
fb73857a | 4699 | return newGVOP(type, OPf_REF, gv_fetchpv("main::STDIN", TRUE, |
85e6fe83 | 4700 | SVt_PVIO)); |
79072805 | 4701 | else |
54b9620d | 4702 | return newUNOP(type, 0, newDEFSVOP()); |
79072805 | 4703 | } |
11343788 | 4704 | return o; |
79072805 LW |
4705 | } |
4706 | ||
4707 | OP * | |
cea2e8a9 | 4708 | Perl_ck_fun(pTHX_ OP *o) |
79072805 | 4709 | { |
11343788 | 4710 | dTHR; |
79072805 LW |
4711 | register OP *kid; |
4712 | OP **tokid; | |
4713 | OP *sibl; | |
4714 | I32 numargs = 0; | |
11343788 | 4715 | int type = o->op_type; |
22c35a8c | 4716 | register I32 oa = PL_opargs[type] >> OASHIFT; |
aeea060c | 4717 | |
11343788 | 4718 | if (o->op_flags & OPf_STACKED) { |
79072805 LW |
4719 | if ((oa & OA_OPTIONAL) && (oa >> 4) && !((oa >> 4) & OA_OPTIONAL)) |
4720 | oa &= ~OA_OPTIONAL; | |
4721 | else | |
11343788 | 4722 | return no_fh_allowed(o); |
79072805 LW |
4723 | } |
4724 | ||
11343788 | 4725 | if (o->op_flags & OPf_KIDS) { |
2d8e6c8d | 4726 | STRLEN n_a; |
11343788 MB |
4727 | tokid = &cLISTOPo->op_first; |
4728 | kid = cLISTOPo->op_first; | |
8990e307 LW |
4729 | if (kid->op_type == OP_PUSHMARK || |
4730 | kid->op_type == OP_NULL && kid->op_targ == OP_PUSHMARK) | |
4731 | { | |
79072805 LW |
4732 | tokid = &kid->op_sibling; |
4733 | kid = kid->op_sibling; | |
4734 | } | |
22c35a8c | 4735 | if (!kid && PL_opargs[type] & OA_DEFGV) |
54b9620d | 4736 | *tokid = kid = newDEFSVOP(); |
79072805 LW |
4737 | |
4738 | while (oa && kid) { | |
4739 | numargs++; | |
4740 | sibl = kid->op_sibling; | |
4741 | switch (oa & 7) { | |
4742 | case OA_SCALAR: | |
62c18ce2 GS |
4743 | /* list seen where single (scalar) arg expected? */ |
4744 | if (numargs == 1 && !(oa >> 4) | |
4745 | && kid->op_type == OP_LIST && type != OP_SCALAR) | |
4746 | { | |
4747 | return too_many_arguments(o,PL_op_desc[type]); | |
4748 | } | |
79072805 LW |
4749 | scalar(kid); |
4750 | break; | |
4751 | case OA_LIST: | |
4752 | if (oa < 16) { | |
4753 | kid = 0; | |
4754 | continue; | |
4755 | } | |
4756 | else | |
4757 | list(kid); | |
4758 | break; | |
4759 | case OA_AVREF: | |
4760 | if (kid->op_type == OP_CONST && | |
62c18ce2 GS |
4761 | (kid->op_private & OPpCONST_BARE)) |
4762 | { | |
2d8e6c8d | 4763 | char *name = SvPVx(((SVOP*)kid)->op_sv, n_a); |
79072805 | 4764 | OP *newop = newAVREF(newGVOP(OP_GV, 0, |
85e6fe83 | 4765 | gv_fetchpv(name, TRUE, SVt_PVAV) )); |
599cee73 | 4766 | if (ckWARN(WARN_SYNTAX)) |
cea2e8a9 | 4767 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 | 4768 | "Array @%s missing the @ in argument %ld of %s()", |
22c35a8c | 4769 | name, (long)numargs, PL_op_desc[type]); |
79072805 LW |
4770 | op_free(kid); |
4771 | kid = newop; | |
4772 | kid->op_sibling = sibl; | |
4773 | *tokid = kid; | |
4774 | } | |
8990e307 | 4775 | else if (kid->op_type != OP_RV2AV && kid->op_type != OP_PADAV) |
35cd451c | 4776 | bad_type(numargs, "array", PL_op_desc[type], kid); |
a0d0e21e | 4777 | mod(kid, type); |
79072805 LW |
4778 | break; |
4779 | case OA_HVREF: | |
4780 | if (kid->op_type == OP_CONST && | |
62c18ce2 GS |
4781 | (kid->op_private & OPpCONST_BARE)) |
4782 | { | |
2d8e6c8d | 4783 | char *name = SvPVx(((SVOP*)kid)->op_sv, n_a); |
79072805 | 4784 | OP *newop = newHVREF(newGVOP(OP_GV, 0, |
85e6fe83 | 4785 | gv_fetchpv(name, TRUE, SVt_PVHV) )); |
599cee73 | 4786 | if (ckWARN(WARN_SYNTAX)) |
cea2e8a9 | 4787 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 | 4788 | "Hash %%%s missing the %% in argument %ld of %s()", |
22c35a8c | 4789 | name, (long)numargs, PL_op_desc[type]); |
79072805 LW |
4790 | op_free(kid); |
4791 | kid = newop; | |
4792 | kid->op_sibling = sibl; | |
4793 | *tokid = kid; | |
4794 | } | |
8990e307 | 4795 | else if (kid->op_type != OP_RV2HV && kid->op_type != OP_PADHV) |
35cd451c | 4796 | bad_type(numargs, "hash", PL_op_desc[type], kid); |
a0d0e21e | 4797 | mod(kid, type); |
79072805 LW |
4798 | break; |
4799 | case OA_CVREF: | |
4800 | { | |
a0d0e21e | 4801 | OP *newop = newUNOP(OP_NULL, 0, kid); |
79072805 LW |
4802 | kid->op_sibling = 0; |
4803 | linklist(kid); | |
4804 | newop->op_next = newop; | |
4805 | kid = newop; | |
4806 | kid->op_sibling = sibl; | |
4807 | *tokid = kid; | |
4808 | } | |
4809 | break; | |
4810 | case OA_FILEREF: | |
c340be78 | 4811 | if (kid->op_type != OP_GV && kid->op_type != OP_RV2GV) { |
79072805 | 4812 | if (kid->op_type == OP_CONST && |
62c18ce2 GS |
4813 | (kid->op_private & OPpCONST_BARE)) |
4814 | { | |
79072805 | 4815 | OP *newop = newGVOP(OP_GV, 0, |
2d8e6c8d | 4816 | gv_fetchpv(SvPVx(((SVOP*)kid)->op_sv, n_a), TRUE, |
85e6fe83 | 4817 | SVt_PVIO) ); |
79072805 LW |
4818 | op_free(kid); |
4819 | kid = newop; | |
4820 | } | |
1ea32a52 GS |
4821 | else if (kid->op_type == OP_READLINE) { |
4822 | /* neophyte patrol: open(<FH>), close(<FH>) etc. */ | |
4823 | bad_type(numargs, "HANDLE", PL_op_desc[o->op_type], kid); | |
4824 | } | |
79072805 | 4825 | else { |
35cd451c | 4826 | I32 flags = OPf_SPECIAL; |
a6c40364 | 4827 | I32 priv = 0; |
35cd451c | 4828 | /* is this op a FH constructor? */ |
853846ea | 4829 | if (is_handle_constructor(o,numargs)) { |
1d8d4d2a | 4830 | flags = 0; |
853846ea NIS |
4831 | /* Set a flag to tell rv2gv to vivify |
4832 | * need to "prove" flag does not mean something | |
4833 | * else already - NI-S 1999/05/07 | |
4834 | */ | |
a6c40364 | 4835 | priv = OPpDEREF; |
1d8d4d2a NIS |
4836 | #if 0 |
4837 | /* Helps with open($array[$n],...) | |
4838 | but is too simplistic - need to do selectively | |
4839 | */ | |
4840 | mod(kid,type); | |
4841 | #endif | |
853846ea | 4842 | } |
79072805 | 4843 | kid->op_sibling = 0; |
35cd451c | 4844 | kid = newUNOP(OP_RV2GV, flags, scalar(kid)); |
a6c40364 GS |
4845 | if (priv) { |
4846 | kid->op_private |= priv; | |
1d8d4d2a | 4847 | } |
79072805 LW |
4848 | } |
4849 | kid->op_sibling = sibl; | |
4850 | *tokid = kid; | |
4851 | } | |
4852 | scalar(kid); | |
4853 | break; | |
4854 | case OA_SCALARREF: | |
a0d0e21e | 4855 | mod(scalar(kid), type); |
79072805 LW |
4856 | break; |
4857 | } | |
4858 | oa >>= 4; | |
4859 | tokid = &kid->op_sibling; | |
4860 | kid = kid->op_sibling; | |
4861 | } | |
11343788 | 4862 | o->op_private |= numargs; |
79072805 | 4863 | if (kid) |
22c35a8c | 4864 | return too_many_arguments(o,PL_op_desc[o->op_type]); |
11343788 | 4865 | listkids(o); |
79072805 | 4866 | } |
22c35a8c | 4867 | else if (PL_opargs[type] & OA_DEFGV) { |
11343788 | 4868 | op_free(o); |
54b9620d | 4869 | return newUNOP(type, 0, newDEFSVOP()); |
a0d0e21e LW |
4870 | } |
4871 | ||
79072805 LW |
4872 | if (oa) { |
4873 | while (oa & OA_OPTIONAL) | |
4874 | oa >>= 4; | |
4875 | if (oa && oa != OA_LIST) | |
22c35a8c | 4876 | return too_few_arguments(o,PL_op_desc[o->op_type]); |
79072805 | 4877 | } |
11343788 | 4878 | return o; |
79072805 LW |
4879 | } |
4880 | ||
4881 | OP * | |
cea2e8a9 | 4882 | Perl_ck_glob(pTHX_ OP *o) |
79072805 | 4883 | { |
fb73857a | 4884 | GV *gv; |
4885 | ||
1f2bfc8a | 4886 | if ((o->op_flags & OPf_KIDS) && !cLISTOPo->op_first->op_sibling) |
54b9620d | 4887 | append_elem(OP_GLOB, o, newDEFSVOP()); |
fb73857a | 4888 | |
4889 | if (!((gv = gv_fetchpv("glob", FALSE, SVt_PVCV)) && GvIMPORTED_CV(gv))) | |
4890 | gv = gv_fetchpv("CORE::GLOBAL::glob", FALSE, SVt_PVCV); | |
b1cb66bf | 4891 | |
4892 | if (gv && GvIMPORTED_CV(gv)) { | |
5196be3e | 4893 | append_elem(OP_GLOB, o, |
80252599 | 4894 | newSVOP(OP_CONST, 0, newSViv(PL_glob_index++))); |
1f2bfc8a | 4895 | o->op_type = OP_LIST; |
22c35a8c | 4896 | o->op_ppaddr = PL_ppaddr[OP_LIST]; |
1f2bfc8a | 4897 | cLISTOPo->op_first->op_type = OP_PUSHMARK; |
22c35a8c | 4898 | cLISTOPo->op_first->op_ppaddr = PL_ppaddr[OP_PUSHMARK]; |
1f2bfc8a | 4899 | o = newUNOP(OP_ENTERSUB, OPf_STACKED, |
aeea060c | 4900 | append_elem(OP_LIST, o, |
1f2bfc8a MB |
4901 | scalar(newUNOP(OP_RV2CV, 0, |
4902 | newGVOP(OP_GV, 0, gv))))); | |
d58bf5aa MB |
4903 | o = newUNOP(OP_NULL, 0, ck_subr(o)); |
4904 | o->op_targ = OP_GLOB; /* hint at what it used to be */ | |
4905 | return o; | |
b1cb66bf | 4906 | } |
4907 | gv = newGVgen("main"); | |
a0d0e21e | 4908 | gv_IOadd(gv); |
11343788 MB |
4909 | append_elem(OP_GLOB, o, newGVOP(OP_GV, 0, gv)); |
4910 | scalarkids(o); | |
4911 | return ck_fun(o); | |
79072805 LW |
4912 | } |
4913 | ||
4914 | OP * | |
cea2e8a9 | 4915 | Perl_ck_grep(pTHX_ OP *o) |
79072805 LW |
4916 | { |
4917 | LOGOP *gwop; | |
4918 | OP *kid; | |
11343788 | 4919 | OPCODE type = o->op_type == OP_GREPSTART ? OP_GREPWHILE : OP_MAPWHILE; |
79072805 | 4920 | |
22c35a8c | 4921 | o->op_ppaddr = PL_ppaddr[OP_GREPSTART]; |
b7dc083c | 4922 | NewOp(1101, gwop, 1, LOGOP); |
aeea060c | 4923 | |
11343788 | 4924 | if (o->op_flags & OPf_STACKED) { |
a0d0e21e | 4925 | OP* k; |
11343788 MB |
4926 | o = ck_sort(o); |
4927 | kid = cLISTOPo->op_first->op_sibling; | |
4928 | for (k = cLISTOPo->op_first->op_sibling->op_next; k; k = k->op_next) { | |
a0d0e21e LW |
4929 | kid = k; |
4930 | } | |
4931 | kid->op_next = (OP*)gwop; | |
11343788 | 4932 | o->op_flags &= ~OPf_STACKED; |
93a17b20 | 4933 | } |
11343788 | 4934 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e LW |
4935 | if (type == OP_MAPWHILE) |
4936 | list(kid); | |
4937 | else | |
4938 | scalar(kid); | |
11343788 | 4939 | o = ck_fun(o); |
3280af22 | 4940 | if (PL_error_count) |
11343788 | 4941 | return o; |
aeea060c | 4942 | kid = cLISTOPo->op_first->op_sibling; |
79072805 | 4943 | if (kid->op_type != OP_NULL) |
cea2e8a9 | 4944 | Perl_croak(aTHX_ "panic: ck_grep"); |
79072805 LW |
4945 | kid = kUNOP->op_first; |
4946 | ||
a0d0e21e | 4947 | gwop->op_type = type; |
22c35a8c | 4948 | gwop->op_ppaddr = PL_ppaddr[type]; |
11343788 | 4949 | gwop->op_first = listkids(o); |
79072805 LW |
4950 | gwop->op_flags |= OPf_KIDS; |
4951 | gwop->op_private = 1; | |
4952 | gwop->op_other = LINKLIST(kid); | |
a0d0e21e | 4953 | gwop->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 LW |
4954 | kid->op_next = (OP*)gwop; |
4955 | ||
11343788 | 4956 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e | 4957 | if (!kid || !kid->op_sibling) |
22c35a8c | 4958 | return too_few_arguments(o,PL_op_desc[o->op_type]); |
a0d0e21e LW |
4959 | for (kid = kid->op_sibling; kid; kid = kid->op_sibling) |
4960 | mod(kid, OP_GREPSTART); | |
4961 | ||
79072805 LW |
4962 | return (OP*)gwop; |
4963 | } | |
4964 | ||
4965 | OP * | |
cea2e8a9 | 4966 | Perl_ck_index(pTHX_ OP *o) |
79072805 | 4967 | { |
11343788 MB |
4968 | if (o->op_flags & OPf_KIDS) { |
4969 | OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
0b71040e LW |
4970 | if (kid) |
4971 | kid = kid->op_sibling; /* get past "big" */ | |
79072805 | 4972 | if (kid && kid->op_type == OP_CONST) |
2779dcf1 | 4973 | fbm_compile(((SVOP*)kid)->op_sv, 0); |
79072805 | 4974 | } |
11343788 | 4975 | return ck_fun(o); |
79072805 LW |
4976 | } |
4977 | ||
4978 | OP * | |
cea2e8a9 | 4979 | Perl_ck_lengthconst(pTHX_ OP *o) |
79072805 LW |
4980 | { |
4981 | /* XXX length optimization goes here */ | |
11343788 | 4982 | return ck_fun(o); |
79072805 LW |
4983 | } |
4984 | ||
4985 | OP * | |
cea2e8a9 | 4986 | Perl_ck_lfun(pTHX_ OP *o) |
79072805 | 4987 | { |
5dc0d613 MB |
4988 | OPCODE type = o->op_type; |
4989 | return modkids(ck_fun(o), type); | |
79072805 LW |
4990 | } |
4991 | ||
4992 | OP * | |
cea2e8a9 | 4993 | Perl_ck_defined(pTHX_ OP *o) /* 19990527 MJD */ |
69794302 | 4994 | { |
20ce7b12 | 4995 | dTHR; |
d0334bed GS |
4996 | if ((o->op_flags & OPf_KIDS) && ckWARN(WARN_DEPRECATED)) { |
4997 | switch (cUNOPo->op_first->op_type) { | |
4998 | case OP_RV2AV: | |
4999 | case OP_PADAV: | |
5000 | case OP_AASSIGN: /* Is this a good idea? */ | |
5001 | Perl_warner(aTHX_ WARN_DEPRECATED, | |
5002 | "defined(@array) is deprecated (and not really meaningful)"); | |
5003 | Perl_warner(aTHX_ WARN_DEPRECATED, | |
5004 | "(Maybe you should just omit the defined()?)\n"); | |
69794302 | 5005 | break; |
d0334bed GS |
5006 | case OP_RV2HV: |
5007 | case OP_PADHV: | |
5008 | Perl_warner(aTHX_ WARN_DEPRECATED, | |
5009 | "defined(%hash) is deprecated (and not really meaningful)"); | |
5010 | Perl_warner(aTHX_ WARN_DEPRECATED, | |
5011 | "(Maybe you should just omit the defined()?)\n"); | |
5012 | break; | |
5013 | default: | |
5014 | /* no warning */ | |
5015 | break; | |
5016 | } | |
69794302 MJD |
5017 | } |
5018 | return ck_rfun(o); | |
5019 | } | |
5020 | ||
5021 | OP * | |
cea2e8a9 | 5022 | Perl_ck_rfun(pTHX_ OP *o) |
8990e307 | 5023 | { |
5dc0d613 MB |
5024 | OPCODE type = o->op_type; |
5025 | return refkids(ck_fun(o), type); | |
8990e307 LW |
5026 | } |
5027 | ||
5028 | OP * | |
cea2e8a9 | 5029 | Perl_ck_listiob(pTHX_ OP *o) |
79072805 LW |
5030 | { |
5031 | register OP *kid; | |
aeea060c | 5032 | |
11343788 | 5033 | kid = cLISTOPo->op_first; |
79072805 | 5034 | if (!kid) { |
11343788 MB |
5035 | o = force_list(o); |
5036 | kid = cLISTOPo->op_first; | |
79072805 LW |
5037 | } |
5038 | if (kid->op_type == OP_PUSHMARK) | |
5039 | kid = kid->op_sibling; | |
11343788 | 5040 | if (kid && o->op_flags & OPf_STACKED) |
79072805 LW |
5041 | kid = kid->op_sibling; |
5042 | else if (kid && !kid->op_sibling) { /* print HANDLE; */ | |
5043 | if (kid->op_type == OP_CONST && kid->op_private & OPpCONST_BARE) { | |
11343788 | 5044 | o->op_flags |= OPf_STACKED; /* make it a filehandle */ |
748a9306 | 5045 | kid = newUNOP(OP_RV2GV, OPf_REF, scalar(kid)); |
11343788 MB |
5046 | cLISTOPo->op_first->op_sibling = kid; |
5047 | cLISTOPo->op_last = kid; | |
79072805 LW |
5048 | kid = kid->op_sibling; |
5049 | } | |
5050 | } | |
5051 | ||
5052 | if (!kid) | |
54b9620d | 5053 | append_elem(o->op_type, o, newDEFSVOP()); |
79072805 | 5054 | |
5dc0d613 | 5055 | o = listkids(o); |
bbce6d69 | 5056 | |
5dc0d613 | 5057 | o->op_private = 0; |
36477c24 | 5058 | #ifdef USE_LOCALE |
3280af22 | 5059 | if (PL_hints & HINT_LOCALE) |
5dc0d613 | 5060 | o->op_private |= OPpLOCALE; |
bbce6d69 | 5061 | #endif |
5062 | ||
5dc0d613 | 5063 | return o; |
bbce6d69 | 5064 | } |
5065 | ||
5066 | OP * | |
cea2e8a9 | 5067 | Perl_ck_fun_locale(pTHX_ OP *o) |
bbce6d69 | 5068 | { |
5dc0d613 | 5069 | o = ck_fun(o); |
bbce6d69 | 5070 | |
5dc0d613 | 5071 | o->op_private = 0; |
36477c24 | 5072 | #ifdef USE_LOCALE |
3280af22 | 5073 | if (PL_hints & HINT_LOCALE) |
5dc0d613 | 5074 | o->op_private |= OPpLOCALE; |
bbce6d69 | 5075 | #endif |
5076 | ||
5dc0d613 | 5077 | return o; |
bbce6d69 | 5078 | } |
5079 | ||
5080 | OP * | |
cea2e8a9 | 5081 | Perl_ck_scmp(pTHX_ OP *o) |
bbce6d69 | 5082 | { |
5dc0d613 | 5083 | o->op_private = 0; |
36477c24 | 5084 | #ifdef USE_LOCALE |
3280af22 | 5085 | if (PL_hints & HINT_LOCALE) |
5dc0d613 | 5086 | o->op_private |= OPpLOCALE; |
bbce6d69 | 5087 | #endif |
36477c24 | 5088 | |
5dc0d613 | 5089 | return o; |
79072805 LW |
5090 | } |
5091 | ||
5092 | OP * | |
cea2e8a9 | 5093 | Perl_ck_match(pTHX_ OP *o) |
79072805 | 5094 | { |
5dc0d613 | 5095 | o->op_private |= OPpRUNTIME; |
11343788 | 5096 | return o; |
79072805 LW |
5097 | } |
5098 | ||
5099 | OP * | |
cea2e8a9 | 5100 | Perl_ck_null(pTHX_ OP *o) |
79072805 | 5101 | { |
11343788 | 5102 | return o; |
79072805 LW |
5103 | } |
5104 | ||
5105 | OP * | |
cea2e8a9 | 5106 | Perl_ck_repeat(pTHX_ OP *o) |
79072805 | 5107 | { |
11343788 MB |
5108 | if (cBINOPo->op_first->op_flags & OPf_PARENS) { |
5109 | o->op_private |= OPpREPEAT_DOLIST; | |
5110 | cBINOPo->op_first = force_list(cBINOPo->op_first); | |
79072805 LW |
5111 | } |
5112 | else | |
11343788 MB |
5113 | scalar(o); |
5114 | return o; | |
79072805 LW |
5115 | } |
5116 | ||
5117 | OP * | |
cea2e8a9 | 5118 | Perl_ck_require(pTHX_ OP *o) |
8990e307 | 5119 | { |
11343788 MB |
5120 | if (o->op_flags & OPf_KIDS) { /* Shall we supply missing .pm? */ |
5121 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
8990e307 LW |
5122 | |
5123 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
8990e307 | 5124 | char *s; |
a0d0e21e LW |
5125 | for (s = SvPVX(kid->op_sv); *s; s++) { |
5126 | if (*s == ':' && s[1] == ':') { | |
5127 | *s = '/'; | |
1aef975c | 5128 | Move(s+2, s+1, strlen(s+2)+1, char); |
a0d0e21e LW |
5129 | --SvCUR(kid->op_sv); |
5130 | } | |
8990e307 | 5131 | } |
a0d0e21e | 5132 | sv_catpvn(kid->op_sv, ".pm", 3); |
8990e307 LW |
5133 | } |
5134 | } | |
11343788 | 5135 | return ck_fun(o); |
8990e307 LW |
5136 | } |
5137 | ||
22c35a8c | 5138 | #if 0 |
8990e307 | 5139 | OP * |
cea2e8a9 | 5140 | Perl_ck_retarget(pTHX_ OP *o) |
79072805 | 5141 | { |
cea2e8a9 | 5142 | Perl_croak(aTHX_ "NOT IMPL LINE %d",__LINE__); |
79072805 | 5143 | /* STUB */ |
11343788 | 5144 | return o; |
79072805 | 5145 | } |
22c35a8c | 5146 | #endif |
79072805 LW |
5147 | |
5148 | OP * | |
cea2e8a9 | 5149 | Perl_ck_select(pTHX_ OP *o) |
79072805 | 5150 | { |
c07a80fd | 5151 | OP* kid; |
11343788 MB |
5152 | if (o->op_flags & OPf_KIDS) { |
5153 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
2304df62 | 5154 | if (kid && kid->op_sibling) { |
11343788 | 5155 | o->op_type = OP_SSELECT; |
22c35a8c | 5156 | o->op_ppaddr = PL_ppaddr[OP_SSELECT]; |
11343788 MB |
5157 | o = ck_fun(o); |
5158 | return fold_constants(o); | |
79072805 LW |
5159 | } |
5160 | } | |
11343788 MB |
5161 | o = ck_fun(o); |
5162 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
c07a80fd | 5163 | if (kid && kid->op_type == OP_RV2GV) |
5164 | kid->op_private &= ~HINT_STRICT_REFS; | |
11343788 | 5165 | return o; |
79072805 LW |
5166 | } |
5167 | ||
5168 | OP * | |
cea2e8a9 | 5169 | Perl_ck_shift(pTHX_ OP *o) |
79072805 | 5170 | { |
11343788 | 5171 | I32 type = o->op_type; |
79072805 | 5172 | |
11343788 | 5173 | if (!(o->op_flags & OPf_KIDS)) { |
6d4ff0d2 MB |
5174 | OP *argop; |
5175 | ||
11343788 | 5176 | op_free(o); |
6d4ff0d2 | 5177 | #ifdef USE_THREADS |
533c011a | 5178 | if (!CvUNIQUE(PL_compcv)) { |
6d4ff0d2 | 5179 | argop = newOP(OP_PADAV, OPf_REF); |
6b88bc9c | 5180 | argop->op_targ = 0; /* PL_curpad[0] is @_ */ |
6d4ff0d2 MB |
5181 | } |
5182 | else { | |
5183 | argop = newUNOP(OP_RV2AV, 0, | |
5184 | scalar(newGVOP(OP_GV, 0, | |
5185 | gv_fetchpv("ARGV", TRUE, SVt_PVAV)))); | |
5186 | } | |
5187 | #else | |
5188 | argop = newUNOP(OP_RV2AV, 0, | |
3280af22 NIS |
5189 | scalar(newGVOP(OP_GV, 0, !CvUNIQUE(PL_compcv) ? |
5190 | PL_defgv : gv_fetchpv("ARGV", TRUE, SVt_PVAV)))); | |
6d4ff0d2 MB |
5191 | #endif /* USE_THREADS */ |
5192 | return newUNOP(type, 0, scalar(argop)); | |
79072805 | 5193 | } |
11343788 | 5194 | return scalar(modkids(ck_fun(o), type)); |
79072805 LW |
5195 | } |
5196 | ||
5197 | OP * | |
cea2e8a9 | 5198 | Perl_ck_sort(pTHX_ OP *o) |
79072805 | 5199 | { |
5dc0d613 | 5200 | o->op_private = 0; |
36477c24 | 5201 | #ifdef USE_LOCALE |
3280af22 | 5202 | if (PL_hints & HINT_LOCALE) |
5dc0d613 | 5203 | o->op_private |= OPpLOCALE; |
bbce6d69 | 5204 | #endif |
5205 | ||
9ea6e965 | 5206 | if (o->op_type == OP_SORT && o->op_flags & OPf_STACKED) |
51a19bc0 | 5207 | simplify_sort(o); |
9c007264 | 5208 | if (o->op_flags & OPf_STACKED) { /* may have been cleared */ |
11343788 | 5209 | OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
463ee0b2 | 5210 | OP *k; |
82092f1d | 5211 | kid = kUNOP->op_first; /* get past null */ |
79072805 | 5212 | |
463ee0b2 | 5213 | if (kid->op_type == OP_SCOPE || kid->op_type == OP_LEAVE) { |
79072805 | 5214 | linklist(kid); |
463ee0b2 LW |
5215 | if (kid->op_type == OP_SCOPE) { |
5216 | k = kid->op_next; | |
5217 | kid->op_next = 0; | |
79072805 | 5218 | } |
463ee0b2 | 5219 | else if (kid->op_type == OP_LEAVE) { |
11343788 | 5220 | if (o->op_type == OP_SORT) { |
748a9306 LW |
5221 | null(kid); /* wipe out leave */ |
5222 | kid->op_next = kid; | |
463ee0b2 | 5223 | |
748a9306 LW |
5224 | for (k = kLISTOP->op_first->op_next; k; k = k->op_next) { |
5225 | if (k->op_next == kid) | |
5226 | k->op_next = 0; | |
5227 | } | |
463ee0b2 | 5228 | } |
748a9306 LW |
5229 | else |
5230 | kid->op_next = 0; /* just disconnect the leave */ | |
a0d0e21e | 5231 | k = kLISTOP->op_first; |
463ee0b2 | 5232 | } |
a0d0e21e LW |
5233 | peep(k); |
5234 | ||
11343788 | 5235 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
11343788 | 5236 | if (o->op_type == OP_SORT) |
a0d0e21e LW |
5237 | kid->op_next = kid; |
5238 | else | |
5239 | kid->op_next = k; | |
11343788 | 5240 | o->op_flags |= OPf_SPECIAL; |
79072805 | 5241 | } |
c6e96bcb GS |
5242 | else if (kid->op_type == OP_RV2SV || kid->op_type == OP_PADSV) |
5243 | null(cLISTOPo->op_first->op_sibling); | |
79072805 | 5244 | } |
bbce6d69 | 5245 | |
11343788 | 5246 | return o; |
79072805 | 5247 | } |
bda4119b GS |
5248 | |
5249 | STATIC void | |
cea2e8a9 | 5250 | S_simplify_sort(pTHX_ OP *o) |
9c007264 | 5251 | { |
51a19bc0 | 5252 | dTHR; |
9c007264 JH |
5253 | register OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
5254 | OP *k; | |
5255 | int reversed; | |
5256 | if (!(o->op_flags & OPf_STACKED)) | |
5257 | return; | |
9ea6e965 GS |
5258 | GvMULTI_on(gv_fetchpv("a", TRUE, SVt_PV)); |
5259 | GvMULTI_on(gv_fetchpv("b", TRUE, SVt_PV)); | |
82092f1d | 5260 | kid = kUNOP->op_first; /* get past null */ |
9c007264 JH |
5261 | if (kid->op_type != OP_SCOPE) |
5262 | return; | |
5263 | kid = kLISTOP->op_last; /* get past scope */ | |
5264 | switch(kid->op_type) { | |
5265 | case OP_NCMP: | |
5266 | case OP_I_NCMP: | |
5267 | case OP_SCMP: | |
5268 | break; | |
5269 | default: | |
5270 | return; | |
5271 | } | |
5272 | k = kid; /* remember this node*/ | |
5273 | if (kBINOP->op_first->op_type != OP_RV2SV) | |
5274 | return; | |
5275 | kid = kBINOP->op_first; /* get past cmp */ | |
5276 | if (kUNOP->op_first->op_type != OP_GV) | |
5277 | return; | |
5278 | kid = kUNOP->op_first; /* get past rv2sv */ | |
5279 | if (GvSTASH(kGVOP->op_gv) != PL_curstash) | |
5280 | return; | |
5281 | if (strEQ(GvNAME(kGVOP->op_gv), "a")) | |
5282 | reversed = 0; | |
5283 | else if(strEQ(GvNAME(kGVOP->op_gv), "b")) | |
5284 | reversed = 1; | |
5285 | else | |
5286 | return; | |
5287 | kid = k; /* back to cmp */ | |
5288 | if (kBINOP->op_last->op_type != OP_RV2SV) | |
5289 | return; | |
5290 | kid = kBINOP->op_last; /* down to 2nd arg */ | |
5291 | if (kUNOP->op_first->op_type != OP_GV) | |
5292 | return; | |
5293 | kid = kUNOP->op_first; /* get past rv2sv */ | |
5294 | if (GvSTASH(kGVOP->op_gv) != PL_curstash | |
5295 | || ( reversed | |
5296 | ? strNE(GvNAME(kGVOP->op_gv), "a") | |
5297 | : strNE(GvNAME(kGVOP->op_gv), "b"))) | |
5298 | return; | |
5299 | o->op_flags &= ~(OPf_STACKED | OPf_SPECIAL); | |
5300 | if (reversed) | |
5301 | o->op_private |= OPpSORT_REVERSE; | |
5302 | if (k->op_type == OP_NCMP) | |
5303 | o->op_private |= OPpSORT_NUMERIC; | |
5304 | if (k->op_type == OP_I_NCMP) | |
5305 | o->op_private |= OPpSORT_NUMERIC | OPpSORT_INTEGER; | |
5306 | op_free(cLISTOPo->op_first->op_sibling); /* delete comparison block */ | |
5307 | cLISTOPo->op_first->op_sibling = cLISTOPo->op_last; | |
5308 | cLISTOPo->op_children = 1; | |
5309 | } | |
79072805 LW |
5310 | |
5311 | OP * | |
cea2e8a9 | 5312 | Perl_ck_split(pTHX_ OP *o) |
79072805 LW |
5313 | { |
5314 | register OP *kid; | |
aeea060c | 5315 | |
11343788 MB |
5316 | if (o->op_flags & OPf_STACKED) |
5317 | return no_fh_allowed(o); | |
79072805 | 5318 | |
11343788 | 5319 | kid = cLISTOPo->op_first; |
8990e307 | 5320 | if (kid->op_type != OP_NULL) |
cea2e8a9 | 5321 | Perl_croak(aTHX_ "panic: ck_split"); |
8990e307 | 5322 | kid = kid->op_sibling; |
11343788 MB |
5323 | op_free(cLISTOPo->op_first); |
5324 | cLISTOPo->op_first = kid; | |
85e6fe83 | 5325 | if (!kid) { |
79cb57f6 | 5326 | cLISTOPo->op_first = kid = newSVOP(OP_CONST, 0, newSVpvn(" ", 1)); |
11343788 | 5327 | cLISTOPo->op_last = kid; /* There was only one element previously */ |
85e6fe83 | 5328 | } |
79072805 LW |
5329 | |
5330 | if (kid->op_type != OP_MATCH) { | |
5331 | OP *sibl = kid->op_sibling; | |
463ee0b2 | 5332 | kid->op_sibling = 0; |
79072805 | 5333 | kid = pmruntime( newPMOP(OP_MATCH, OPf_SPECIAL), kid, Nullop); |
11343788 MB |
5334 | if (cLISTOPo->op_first == cLISTOPo->op_last) |
5335 | cLISTOPo->op_last = kid; | |
5336 | cLISTOPo->op_first = kid; | |
79072805 LW |
5337 | kid->op_sibling = sibl; |
5338 | } | |
5339 | ||
5340 | kid->op_type = OP_PUSHRE; | |
22c35a8c | 5341 | kid->op_ppaddr = PL_ppaddr[OP_PUSHRE]; |
79072805 LW |
5342 | scalar(kid); |
5343 | ||
5344 | if (!kid->op_sibling) | |
54b9620d | 5345 | append_elem(OP_SPLIT, o, newDEFSVOP()); |
79072805 LW |
5346 | |
5347 | kid = kid->op_sibling; | |
5348 | scalar(kid); | |
5349 | ||
5350 | if (!kid->op_sibling) | |
11343788 | 5351 | append_elem(OP_SPLIT, o, newSVOP(OP_CONST, 0, newSViv(0))); |
79072805 LW |
5352 | |
5353 | kid = kid->op_sibling; | |
5354 | scalar(kid); | |
5355 | ||
5356 | if (kid->op_sibling) | |
22c35a8c | 5357 | return too_many_arguments(o,PL_op_desc[o->op_type]); |
79072805 | 5358 | |
11343788 | 5359 | return o; |
79072805 LW |
5360 | } |
5361 | ||
5362 | OP * | |
cea2e8a9 | 5363 | Perl_ck_subr(pTHX_ OP *o) |
79072805 | 5364 | { |
11343788 MB |
5365 | dTHR; |
5366 | OP *prev = ((cUNOPo->op_first->op_sibling) | |
5367 | ? cUNOPo : ((UNOP*)cUNOPo->op_first))->op_first; | |
5368 | OP *o2 = prev->op_sibling; | |
4633a7c4 LW |
5369 | OP *cvop; |
5370 | char *proto = 0; | |
5371 | CV *cv = 0; | |
46fc3d4c | 5372 | GV *namegv = 0; |
4633a7c4 LW |
5373 | int optional = 0; |
5374 | I32 arg = 0; | |
2d8e6c8d | 5375 | STRLEN n_a; |
4633a7c4 | 5376 | |
11343788 | 5377 | for (cvop = o2; cvop->op_sibling; cvop = cvop->op_sibling) ; |
4633a7c4 LW |
5378 | if (cvop->op_type == OP_RV2CV) { |
5379 | SVOP* tmpop; | |
11343788 | 5380 | o->op_private |= (cvop->op_private & OPpENTERSUB_AMPER); |
4633a7c4 LW |
5381 | null(cvop); /* disable rv2cv */ |
5382 | tmpop = (SVOP*)((UNOP*)cvop)->op_first; | |
5383 | if (tmpop->op_type == OP_GV) { | |
8ebc5c01 | 5384 | cv = GvCVu(tmpop->op_sv); |
5dc0d613 | 5385 | if (cv && SvPOK(cv) && !(o->op_private & OPpENTERSUB_AMPER)) { |
46fc3d4c | 5386 | namegv = CvANON(cv) ? (GV*)tmpop->op_sv : CvGV(cv); |
2d8e6c8d | 5387 | proto = SvPV((SV*)cv, n_a); |
46fc3d4c | 5388 | } |
4633a7c4 LW |
5389 | } |
5390 | } | |
7a52d87a GS |
5391 | else if (cvop->op_type == OP_METHOD) { |
5392 | if (o2->op_type == OP_CONST) | |
5393 | o2->op_private &= ~OPpCONST_STRICT; | |
58a40671 GS |
5394 | else if (o2->op_type == OP_LIST) { |
5395 | OP *o = ((UNOP*)o2)->op_first->op_sibling; | |
5396 | if (o && o->op_type == OP_CONST) | |
5397 | o->op_private &= ~OPpCONST_STRICT; | |
5398 | } | |
7a52d87a | 5399 | } |
3280af22 NIS |
5400 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
5401 | if (PERLDB_SUB && PL_curstash != PL_debstash) | |
11343788 MB |
5402 | o->op_private |= OPpENTERSUB_DB; |
5403 | while (o2 != cvop) { | |
4633a7c4 LW |
5404 | if (proto) { |
5405 | switch (*proto) { | |
5406 | case '\0': | |
5dc0d613 | 5407 | return too_many_arguments(o, gv_ename(namegv)); |
4633a7c4 LW |
5408 | case ';': |
5409 | optional = 1; | |
5410 | proto++; | |
5411 | continue; | |
5412 | case '$': | |
5413 | proto++; | |
5414 | arg++; | |
11343788 | 5415 | scalar(o2); |
4633a7c4 LW |
5416 | break; |
5417 | case '%': | |
5418 | case '@': | |
11343788 | 5419 | list(o2); |
4633a7c4 LW |
5420 | arg++; |
5421 | break; | |
5422 | case '&': | |
5423 | proto++; | |
5424 | arg++; | |
11343788 | 5425 | if (o2->op_type != OP_REFGEN && o2->op_type != OP_UNDEF) |
5dc0d613 | 5426 | bad_type(arg, "block", gv_ename(namegv), o2); |
4633a7c4 LW |
5427 | break; |
5428 | case '*': | |
2ba6ecf4 | 5429 | /* '*' allows any scalar type, including bareword */ |
4633a7c4 LW |
5430 | proto++; |
5431 | arg++; | |
11343788 | 5432 | if (o2->op_type == OP_RV2GV) |
2ba6ecf4 | 5433 | goto wrapref; /* autoconvert GLOB -> GLOBref */ |
7a52d87a GS |
5434 | else if (o2->op_type == OP_CONST) |
5435 | o2->op_private &= ~OPpCONST_STRICT; | |
9675f7ac GS |
5436 | else if (o2->op_type == OP_ENTERSUB) { |
5437 | /* accidental subroutine, revert to bareword */ | |
5438 | OP *gvop = ((UNOP*)o2)->op_first; | |
5439 | if (gvop && gvop->op_type == OP_NULL) { | |
5440 | gvop = ((UNOP*)gvop)->op_first; | |
5441 | if (gvop) { | |
5442 | for (; gvop->op_sibling; gvop = gvop->op_sibling) | |
5443 | ; | |
5444 | if (gvop && | |
5445 | (gvop->op_private & OPpENTERSUB_NOPAREN) && | |
5446 | (gvop = ((UNOP*)gvop)->op_first) && | |
5447 | gvop->op_type == OP_GV) | |
5448 | { | |
5449 | GV *gv = (GV*)((SVOP*)gvop)->op_sv; | |
5450 | OP *sibling = o2->op_sibling; | |
2692f720 | 5451 | SV *n = newSVpvn("",0); |
9675f7ac | 5452 | op_free(o2); |
2692f720 GS |
5453 | gv_fullname3(n, gv, ""); |
5454 | if (SvCUR(n)>6 && strnEQ(SvPVX(n),"main::",6)) | |
5455 | sv_chop(n, SvPVX(n)+6); | |
5456 | o2 = newSVOP(OP_CONST, 0, n); | |
9675f7ac GS |
5457 | prev->op_sibling = o2; |
5458 | o2->op_sibling = sibling; | |
5459 | } | |
5460 | } | |
5461 | } | |
5462 | } | |
2ba6ecf4 GS |
5463 | scalar(o2); |
5464 | break; | |
4633a7c4 LW |
5465 | case '\\': |
5466 | proto++; | |
5467 | arg++; | |
5468 | switch (*proto++) { | |
5469 | case '*': | |
11343788 | 5470 | if (o2->op_type != OP_RV2GV) |
5dc0d613 | 5471 | bad_type(arg, "symbol", gv_ename(namegv), o2); |
4633a7c4 LW |
5472 | goto wrapref; |
5473 | case '&': | |
11343788 | 5474 | if (o2->op_type != OP_RV2CV) |
5dc0d613 | 5475 | bad_type(arg, "sub", gv_ename(namegv), o2); |
4633a7c4 LW |
5476 | goto wrapref; |
5477 | case '$': | |
386acf99 GS |
5478 | if (o2->op_type != OP_RV2SV |
5479 | && o2->op_type != OP_PADSV | |
5480 | && o2->op_type != OP_THREADSV) | |
5481 | { | |
5dc0d613 | 5482 | bad_type(arg, "scalar", gv_ename(namegv), o2); |
386acf99 | 5483 | } |
4633a7c4 LW |
5484 | goto wrapref; |
5485 | case '@': | |
11343788 | 5486 | if (o2->op_type != OP_RV2AV && o2->op_type != OP_PADAV) |
5dc0d613 | 5487 | bad_type(arg, "array", gv_ename(namegv), o2); |
4633a7c4 LW |
5488 | goto wrapref; |
5489 | case '%': | |
11343788 | 5490 | if (o2->op_type != OP_RV2HV && o2->op_type != OP_PADHV) |
5dc0d613 | 5491 | bad_type(arg, "hash", gv_ename(namegv), o2); |
4633a7c4 LW |
5492 | wrapref: |
5493 | { | |
11343788 | 5494 | OP* kid = o2; |
6fa846a0 | 5495 | OP* sib = kid->op_sibling; |
4633a7c4 | 5496 | kid->op_sibling = 0; |
6fa846a0 GS |
5497 | o2 = newUNOP(OP_REFGEN, 0, kid); |
5498 | o2->op_sibling = sib; | |
e858de61 | 5499 | prev->op_sibling = o2; |
4633a7c4 LW |
5500 | } |
5501 | break; | |
5502 | default: goto oops; | |
5503 | } | |
5504 | break; | |
b1cb66bf | 5505 | case ' ': |
5506 | proto++; | |
5507 | continue; | |
4633a7c4 LW |
5508 | default: |
5509 | oops: | |
cea2e8a9 | 5510 | Perl_croak(aTHX_ "Malformed prototype for %s: %s", |
2d8e6c8d | 5511 | gv_ename(namegv), SvPV((SV*)cv, n_a)); |
4633a7c4 LW |
5512 | } |
5513 | } | |
5514 | else | |
11343788 MB |
5515 | list(o2); |
5516 | mod(o2, OP_ENTERSUB); | |
5517 | prev = o2; | |
5518 | o2 = o2->op_sibling; | |
4633a7c4 | 5519 | } |
fb73857a | 5520 | if (proto && !optional && |
5521 | (*proto && *proto != '@' && *proto != '%' && *proto != ';')) | |
5dc0d613 | 5522 | return too_few_arguments(o, gv_ename(namegv)); |
11343788 | 5523 | return o; |
79072805 LW |
5524 | } |
5525 | ||
5526 | OP * | |
cea2e8a9 | 5527 | Perl_ck_svconst(pTHX_ OP *o) |
8990e307 | 5528 | { |
11343788 MB |
5529 | SvREADONLY_on(cSVOPo->op_sv); |
5530 | return o; | |
8990e307 LW |
5531 | } |
5532 | ||
5533 | OP * | |
cea2e8a9 | 5534 | Perl_ck_trunc(pTHX_ OP *o) |
79072805 | 5535 | { |
11343788 MB |
5536 | if (o->op_flags & OPf_KIDS) { |
5537 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 | 5538 | |
a0d0e21e LW |
5539 | if (kid->op_type == OP_NULL) |
5540 | kid = (SVOP*)kid->op_sibling; | |
bb53490d GS |
5541 | if (kid && kid->op_type == OP_CONST && |
5542 | (kid->op_private & OPpCONST_BARE)) | |
5543 | { | |
11343788 | 5544 | o->op_flags |= OPf_SPECIAL; |
bb53490d GS |
5545 | kid->op_private &= ~OPpCONST_STRICT; |
5546 | } | |
79072805 | 5547 | } |
11343788 | 5548 | return ck_fun(o); |
79072805 LW |
5549 | } |
5550 | ||
463ee0b2 LW |
5551 | /* A peephole optimizer. We visit the ops in the order they're to execute. */ |
5552 | ||
79072805 | 5553 | void |
864dbfa3 | 5554 | Perl_peep(pTHX_ register OP *o) |
79072805 | 5555 | { |
11343788 | 5556 | dTHR; |
79072805 | 5557 | register OP* oldop = 0; |
2d8e6c8d GS |
5558 | STRLEN n_a; |
5559 | ||
a0d0e21e | 5560 | if (!o || o->op_seq) |
79072805 | 5561 | return; |
a0d0e21e | 5562 | ENTER; |
462e5cf6 | 5563 | SAVEOP(); |
3280af22 | 5564 | SAVESPTR(PL_curcop); |
a0d0e21e LW |
5565 | for (; o; o = o->op_next) { |
5566 | if (o->op_seq) | |
5567 | break; | |
3280af22 NIS |
5568 | if (!PL_op_seqmax) |
5569 | PL_op_seqmax++; | |
533c011a | 5570 | PL_op = o; |
a0d0e21e LW |
5571 | switch (o->op_type) { |
5572 | case OP_NEXTSTATE: | |
5573 | case OP_DBSTATE: | |
3280af22 NIS |
5574 | PL_curcop = ((COP*)o); /* for warnings */ |
5575 | o->op_seq = PL_op_seqmax++; | |
a0d0e21e LW |
5576 | break; |
5577 | ||
a0d0e21e | 5578 | case OP_CONST: |
7a52d87a GS |
5579 | if (cSVOPo->op_private & OPpCONST_STRICT) |
5580 | no_bareword_allowed(o); | |
5581 | /* FALL THROUGH */ | |
5582 | case OP_CONCAT: | |
a0d0e21e LW |
5583 | case OP_JOIN: |
5584 | case OP_UC: | |
5585 | case OP_UCFIRST: | |
5586 | case OP_LC: | |
5587 | case OP_LCFIRST: | |
5588 | case OP_QUOTEMETA: | |
3c4f770c | 5589 | if (o->op_next && o->op_next->op_type == OP_STRINGIFY) |
a0d0e21e | 5590 | null(o->op_next); |
3280af22 | 5591 | o->op_seq = PL_op_seqmax++; |
a0d0e21e | 5592 | break; |
8990e307 | 5593 | case OP_STUB: |
54310121 | 5594 | if ((o->op_flags & OPf_WANT) != OPf_WANT_LIST) { |
3280af22 | 5595 | o->op_seq = PL_op_seqmax++; |
54310121 | 5596 | break; /* Scalar stub must produce undef. List stub is noop */ |
8990e307 | 5597 | } |
748a9306 | 5598 | goto nothin; |
79072805 | 5599 | case OP_NULL: |
748a9306 | 5600 | if (o->op_targ == OP_NEXTSTATE || o->op_targ == OP_DBSTATE) |
3280af22 | 5601 | PL_curcop = ((COP*)o); |
748a9306 | 5602 | goto nothin; |
79072805 | 5603 | case OP_SCALAR: |
93a17b20 | 5604 | case OP_LINESEQ: |
463ee0b2 | 5605 | case OP_SCOPE: |
748a9306 | 5606 | nothin: |
a0d0e21e LW |
5607 | if (oldop && o->op_next) { |
5608 | oldop->op_next = o->op_next; | |
79072805 LW |
5609 | continue; |
5610 | } | |
3280af22 | 5611 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
5612 | break; |
5613 | ||
5614 | case OP_GV: | |
a0d0e21e | 5615 | if (o->op_next->op_type == OP_RV2SV) { |
5f05dabc | 5616 | if (!(o->op_next->op_private & OPpDEREF)) { |
a0d0e21e LW |
5617 | null(o->op_next); |
5618 | o->op_private |= o->op_next->op_private & OPpLVAL_INTRO; | |
5619 | o->op_next = o->op_next->op_next; | |
5620 | o->op_type = OP_GVSV; | |
22c35a8c | 5621 | o->op_ppaddr = PL_ppaddr[OP_GVSV]; |
8990e307 LW |
5622 | } |
5623 | } | |
a0d0e21e LW |
5624 | else if (o->op_next->op_type == OP_RV2AV) { |
5625 | OP* pop = o->op_next->op_next; | |
5626 | IV i; | |
8990e307 | 5627 | if (pop->op_type == OP_CONST && |
533c011a | 5628 | (PL_op = pop->op_next) && |
8990e307 | 5629 | pop->op_next->op_type == OP_AELEM && |
a0d0e21e | 5630 | !(pop->op_next->op_private & |
68dc0745 | 5631 | (OPpLVAL_INTRO|OPpLVAL_DEFER|OPpDEREF)) && |
3280af22 | 5632 | (i = SvIV(((SVOP*)pop)->op_sv) - PL_compiling.cop_arybase) |
a0d0e21e | 5633 | <= 255 && |
8990e307 LW |
5634 | i >= 0) |
5635 | { | |
748a9306 | 5636 | SvREFCNT_dec(((SVOP*)pop)->op_sv); |
a0d0e21e | 5637 | null(o->op_next); |
8990e307 LW |
5638 | null(pop->op_next); |
5639 | null(pop); | |
a0d0e21e LW |
5640 | o->op_flags |= pop->op_next->op_flags & OPf_MOD; |
5641 | o->op_next = pop->op_next->op_next; | |
5642 | o->op_type = OP_AELEMFAST; | |
22c35a8c | 5643 | o->op_ppaddr = PL_ppaddr[OP_AELEMFAST]; |
a0d0e21e | 5644 | o->op_private = (U8)i; |
a6006777 | 5645 | GvAVn(((GVOP*)o)->op_gv); |
8990e307 | 5646 | } |
79072805 | 5647 | } |
3280af22 | 5648 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
5649 | break; |
5650 | ||
a0d0e21e | 5651 | case OP_MAPWHILE: |
79072805 LW |
5652 | case OP_GREPWHILE: |
5653 | case OP_AND: | |
5654 | case OP_OR: | |
3280af22 | 5655 | o->op_seq = PL_op_seqmax++; |
fd4d1407 IZ |
5656 | while (cLOGOP->op_other->op_type == OP_NULL) |
5657 | cLOGOP->op_other = cLOGOP->op_other->op_next; | |
79072805 LW |
5658 | peep(cLOGOP->op_other); |
5659 | break; | |
5660 | ||
5661 | case OP_COND_EXPR: | |
3280af22 | 5662 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
5663 | peep(cCONDOP->op_true); |
5664 | peep(cCONDOP->op_false); | |
5665 | break; | |
5666 | ||
5667 | case OP_ENTERLOOP: | |
3280af22 | 5668 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
5669 | peep(cLOOP->op_redoop); |
5670 | peep(cLOOP->op_nextop); | |
5671 | peep(cLOOP->op_lastop); | |
5672 | break; | |
5673 | ||
8782bef2 | 5674 | case OP_QR: |
79072805 LW |
5675 | case OP_MATCH: |
5676 | case OP_SUBST: | |
3280af22 | 5677 | o->op_seq = PL_op_seqmax++; |
a0d0e21e | 5678 | peep(cPMOP->op_pmreplstart); |
79072805 LW |
5679 | break; |
5680 | ||
a0d0e21e | 5681 | case OP_EXEC: |
3280af22 | 5682 | o->op_seq = PL_op_seqmax++; |
599cee73 PM |
5683 | if (ckWARN(WARN_SYNTAX) && o->op_next |
5684 | && o->op_next->op_type == OP_NEXTSTATE) { | |
a0d0e21e | 5685 | if (o->op_next->op_sibling && |
20408e3c GS |
5686 | o->op_next->op_sibling->op_type != OP_EXIT && |
5687 | o->op_next->op_sibling->op_type != OP_WARN && | |
a0d0e21e | 5688 | o->op_next->op_sibling->op_type != OP_DIE) { |
3280af22 | 5689 | line_t oldline = PL_curcop->cop_line; |
a0d0e21e | 5690 | |
3280af22 | 5691 | PL_curcop->cop_line = ((COP*)o->op_next)->cop_line; |
cea2e8a9 GS |
5692 | Perl_warner(aTHX_ WARN_SYNTAX, "Statement unlikely to be reached"); |
5693 | Perl_warner(aTHX_ WARN_SYNTAX, "(Maybe you meant system() when you said exec()?)\n"); | |
3280af22 | 5694 | PL_curcop->cop_line = oldline; |
a0d0e21e LW |
5695 | } |
5696 | } | |
5697 | break; | |
aeea060c | 5698 | |
c750a3ec MB |
5699 | case OP_HELEM: { |
5700 | UNOP *rop; | |
5701 | SV *lexname; | |
5702 | GV **fields; | |
5703 | SV **svp, **indsvp; | |
5704 | I32 ind; | |
5705 | char *key; | |
5706 | STRLEN keylen; | |
aeea060c | 5707 | |
377b21bb | 5708 | if ((o->op_private & (OPpLVAL_INTRO)) |
c750a3ec MB |
5709 | || ((BINOP*)o)->op_last->op_type != OP_CONST) |
5710 | break; | |
5711 | rop = (UNOP*)((BINOP*)o)->op_first; | |
5712 | if (rop->op_type != OP_RV2HV || rop->op_first->op_type != OP_PADSV) | |
5713 | break; | |
3280af22 | 5714 | lexname = *av_fetch(PL_comppad_name, rop->op_first->op_targ, TRUE); |
c750a3ec MB |
5715 | if (!SvOBJECT(lexname)) |
5716 | break; | |
5196be3e | 5717 | fields = (GV**)hv_fetch(SvSTASH(lexname), "FIELDS", 6, FALSE); |
c750a3ec MB |
5718 | if (!fields || !GvHV(*fields)) |
5719 | break; | |
5720 | svp = &((SVOP*)((BINOP*)o)->op_last)->op_sv; | |
5721 | key = SvPV(*svp, keylen); | |
5722 | indsvp = hv_fetch(GvHV(*fields), key, keylen, FALSE); | |
5723 | if (!indsvp) { | |
cea2e8a9 | 5724 | Perl_croak(aTHX_ "No such field \"%s\" in variable %s of type %s", |
2d8e6c8d | 5725 | key, SvPV(lexname, n_a), HvNAME(SvSTASH(lexname))); |
c750a3ec MB |
5726 | } |
5727 | ind = SvIV(*indsvp); | |
5728 | if (ind < 1) | |
cea2e8a9 | 5729 | Perl_croak(aTHX_ "Bad index while coercing array into hash"); |
c750a3ec | 5730 | rop->op_type = OP_RV2AV; |
22c35a8c | 5731 | rop->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
c750a3ec | 5732 | o->op_type = OP_AELEM; |
22c35a8c | 5733 | o->op_ppaddr = PL_ppaddr[OP_AELEM]; |
c750a3ec MB |
5734 | SvREFCNT_dec(*svp); |
5735 | *svp = newSViv(ind); | |
5736 | break; | |
5737 | } | |
5738 | ||
79072805 | 5739 | default: |
3280af22 | 5740 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
5741 | break; |
5742 | } | |
a0d0e21e | 5743 | oldop = o; |
79072805 | 5744 | } |
a0d0e21e | 5745 | LEAVE; |
79072805 | 5746 | } |