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 | ||
b7dc083c NIS |
22 | /* #define PL_OP_SLAB_ALLOC */ |
23 | ||
24 | #ifdef PL_OP_SLAB_ALLOC | |
25 | #define SLAB_SIZE 8192 | |
26 | static char *PL_OpPtr = NULL; | |
27 | static int PL_OpSpace = 0; | |
28 | #define NewOp(m,var,c,type) do { if ((PL_OpSpace -= c*sizeof(type)) >= 0) \ | |
29 | var = (type *)(PL_OpPtr -= c*sizeof(type)); \ | |
30 | else \ | |
31 | var = (type *) Slab_Alloc(m,c*sizeof(type)); \ | |
32 | } while (0) | |
33 | ||
864dbfa3 | 34 | STATIC void * |
cea2e8a9 | 35 | S_Slab_Alloc(pTHX_ int m, size_t sz) |
b7dc083c NIS |
36 | { |
37 | Newz(m,PL_OpPtr,SLAB_SIZE,char); | |
38 | PL_OpSpace = SLAB_SIZE - sz; | |
39 | return PL_OpPtr += PL_OpSpace; | |
40 | } | |
76e3520e | 41 | |
b7dc083c NIS |
42 | #else |
43 | #define NewOp(m, var, c, type) Newz(m, var, c, type) | |
44 | #endif | |
e50aee73 | 45 | /* |
5dc0d613 | 46 | * In the following definition, the ", Nullop" is just to make the compiler |
a5f75d66 | 47 | * think the expression is of the right type: croak actually does a Siglongjmp. |
e50aee73 | 48 | */ |
11343788 | 49 | #define CHECKOP(type,o) \ |
3280af22 | 50 | ((PL_op_mask && PL_op_mask[type]) \ |
5dc0d613 | 51 | ? ( op_free((OP*)o), \ |
cea2e8a9 | 52 | Perl_croak(aTHX_ "%s trapped by operation mask", PL_op_desc[type]), \ |
28757baa | 53 | Nullop ) \ |
fc0dc3b3 | 54 | : CALL_FPTR(PL_check[type])(aTHX_ (OP*)o)) |
e50aee73 | 55 | |
c53d7c7d HS |
56 | #define PAD_MAX 999999999 |
57 | ||
76e3520e | 58 | STATIC char* |
cea2e8a9 | 59 | S_gv_ename(pTHX_ GV *gv) |
4633a7c4 | 60 | { |
2d8e6c8d | 61 | STRLEN n_a; |
4633a7c4 | 62 | SV* tmpsv = sv_newmortal(); |
46fc3d4c | 63 | gv_efullname3(tmpsv, gv, Nullch); |
2d8e6c8d | 64 | return SvPV(tmpsv,n_a); |
4633a7c4 LW |
65 | } |
66 | ||
76e3520e | 67 | STATIC OP * |
cea2e8a9 | 68 | S_no_fh_allowed(pTHX_ OP *o) |
79072805 | 69 | { |
cea2e8a9 | 70 | yyerror(Perl_form(aTHX_ "Missing comma after first argument to %s function", |
22c35a8c | 71 | PL_op_desc[o->op_type])); |
11343788 | 72 | return o; |
79072805 LW |
73 | } |
74 | ||
76e3520e | 75 | STATIC OP * |
cea2e8a9 | 76 | S_too_few_arguments(pTHX_ OP *o, char *name) |
79072805 | 77 | { |
cea2e8a9 | 78 | yyerror(Perl_form(aTHX_ "Not enough arguments for %s", name)); |
11343788 | 79 | return o; |
79072805 LW |
80 | } |
81 | ||
76e3520e | 82 | STATIC OP * |
cea2e8a9 | 83 | S_too_many_arguments(pTHX_ OP *o, char *name) |
79072805 | 84 | { |
cea2e8a9 | 85 | yyerror(Perl_form(aTHX_ "Too many arguments for %s", name)); |
11343788 | 86 | return o; |
79072805 LW |
87 | } |
88 | ||
76e3520e | 89 | STATIC void |
cea2e8a9 | 90 | S_bad_type(pTHX_ I32 n, char *t, char *name, OP *kid) |
8990e307 | 91 | { |
cea2e8a9 | 92 | yyerror(Perl_form(aTHX_ "Type of arg %d to %s must be %s (not %s)", |
22c35a8c | 93 | (int)n, name, t, PL_op_desc[kid->op_type])); |
8990e307 LW |
94 | } |
95 | ||
7a52d87a | 96 | STATIC void |
cea2e8a9 | 97 | S_no_bareword_allowed(pTHX_ OP *o) |
7a52d87a | 98 | { |
cea2e8a9 | 99 | Perl_warn(aTHX_ "Bareword \"%s\" not allowed while \"strict subs\" in use", |
7a52d87a GS |
100 | SvPV_nolen(cSVOPo->op_sv)); |
101 | ++PL_error_count; | |
102 | } | |
103 | ||
79072805 LW |
104 | /* "register" allocation */ |
105 | ||
106 | PADOFFSET | |
864dbfa3 | 107 | Perl_pad_allocmy(pTHX_ char *name) |
93a17b20 | 108 | { |
11343788 | 109 | dTHR; |
a0d0e21e LW |
110 | PADOFFSET off; |
111 | SV *sv; | |
112 | ||
834a4ddd LW |
113 | if (!( |
114 | isALPHA(name[1]) || | |
115 | (PL_hints & HINT_UTF8 && (name[1] & 0xc0) == 0xc0) || | |
116 | name[1] == '_' && (int)strlen(name) > 2)) | |
117 | { | |
c4d0567e | 118 | if (!isPRINT(name[1]) || strchr("\t\n\r\f", name[1])) { |
2b92dfce GS |
119 | /* 1999-02-27 mjd@plover.com */ |
120 | char *p; | |
121 | p = strchr(name, '\0'); | |
122 | /* The next block assumes the buffer is at least 205 chars | |
123 | long. At present, it's always at least 256 chars. */ | |
124 | if (p-name > 200) { | |
125 | strcpy(name+200, "..."); | |
126 | p = name+199; | |
127 | } | |
128 | else { | |
129 | p[1] = '\0'; | |
130 | } | |
131 | /* Move everything else down one character */ | |
132 | for (; p-name > 2; p--) | |
133 | *p = *(p-1); | |
46fc3d4c | 134 | name[2] = toCTRL(name[1]); |
135 | name[1] = '^'; | |
136 | } | |
cea2e8a9 | 137 | yyerror(Perl_form(aTHX_ "Can't use global %s in \"my\"",name)); |
a0d0e21e | 138 | } |
599cee73 | 139 | if (ckWARN(WARN_UNSAFE) && AvFILLp(PL_comppad_name) >= 0) { |
3280af22 NIS |
140 | SV **svp = AvARRAY(PL_comppad_name); |
141 | for (off = AvFILLp(PL_comppad_name); off > PL_comppad_name_floor; off--) { | |
b1cb66bf | 142 | if ((sv = svp[off]) |
3280af22 | 143 | && sv != &PL_sv_undef |
c53d7c7d | 144 | && (SvIVX(sv) == PAD_MAX || SvIVX(sv) == 0) |
b1cb66bf | 145 | && strEQ(name, SvPVX(sv))) |
146 | { | |
cea2e8a9 | 147 | Perl_warner(aTHX_ WARN_UNSAFE, |
9fbbe825 | 148 | "\"my\" variable %s masks earlier declaration in same %s", |
c53d7c7d | 149 | name, (SvIVX(sv) == PAD_MAX ? "scope" : "statement")); |
b1cb66bf | 150 | break; |
151 | } | |
152 | } | |
153 | } | |
a0d0e21e LW |
154 | off = pad_alloc(OP_PADSV, SVs_PADMY); |
155 | sv = NEWSV(1102,0); | |
93a17b20 LW |
156 | sv_upgrade(sv, SVt_PVNV); |
157 | sv_setpv(sv, name); | |
3280af22 | 158 | if (PL_in_my_stash) { |
c750a3ec | 159 | if (*name != '$') |
cea2e8a9 | 160 | yyerror(Perl_form(aTHX_ "Can't declare class for non-scalar %s in \"my\"", |
dce40276 | 161 | name)); |
c750a3ec MB |
162 | SvOBJECT_on(sv); |
163 | (void)SvUPGRADE(sv, SVt_PVMG); | |
3280af22 NIS |
164 | SvSTASH(sv) = (HV*)SvREFCNT_inc(PL_in_my_stash); |
165 | PL_sv_objcount++; | |
c750a3ec | 166 | } |
3280af22 | 167 | av_store(PL_comppad_name, off, sv); |
65202027 | 168 | SvNVX(sv) = (NV)PAD_MAX; |
8990e307 | 169 | SvIVX(sv) = 0; /* Not yet introduced--see newSTATEOP */ |
3280af22 NIS |
170 | if (!PL_min_intro_pending) |
171 | PL_min_intro_pending = off; | |
172 | PL_max_intro_pending = off; | |
93a17b20 | 173 | if (*name == '@') |
3280af22 | 174 | av_store(PL_comppad, off, (SV*)newAV()); |
93a17b20 | 175 | else if (*name == '%') |
3280af22 NIS |
176 | av_store(PL_comppad, off, (SV*)newHV()); |
177 | SvPADMY_on(PL_curpad[off]); | |
93a17b20 LW |
178 | return off; |
179 | } | |
180 | ||
2680586e GS |
181 | #define FINDLEX_NOSEARCH 1 /* don't search outer contexts */ |
182 | ||
76e3520e | 183 | STATIC PADOFFSET |
cea2e8a9 | 184 | S_pad_findlex(pTHX_ char *name, PADOFFSET newoff, U32 seq, CV* startcv, |
864dbfa3 | 185 | I32 cx_ix, I32 saweval, U32 flags) |
93a17b20 | 186 | { |
11343788 | 187 | dTHR; |
748a9306 | 188 | CV *cv; |
93a17b20 LW |
189 | I32 off; |
190 | SV *sv; | |
93a17b20 | 191 | register I32 i; |
c09156bb | 192 | register PERL_CONTEXT *cx; |
93a17b20 | 193 | |
748a9306 | 194 | for (cv = startcv; cv; cv = CvOUTSIDE(cv)) { |
4fdae800 | 195 | AV *curlist = CvPADLIST(cv); |
196 | SV **svp = av_fetch(curlist, 0, FALSE); | |
748a9306 | 197 | AV *curname; |
4fdae800 | 198 | |
3280af22 | 199 | if (!svp || *svp == &PL_sv_undef) |
4633a7c4 | 200 | continue; |
748a9306 LW |
201 | curname = (AV*)*svp; |
202 | svp = AvARRAY(curname); | |
93965878 | 203 | for (off = AvFILLp(curname); off > 0; off--) { |
748a9306 | 204 | if ((sv = svp[off]) && |
3280af22 | 205 | sv != &PL_sv_undef && |
748a9306 | 206 | seq <= SvIVX(sv) && |
13826f2c | 207 | seq > I_32(SvNVX(sv)) && |
748a9306 LW |
208 | strEQ(SvPVX(sv), name)) |
209 | { | |
5f05dabc | 210 | I32 depth; |
211 | AV *oldpad; | |
212 | SV *oldsv; | |
213 | ||
214 | depth = CvDEPTH(cv); | |
215 | if (!depth) { | |
9607fc9c | 216 | if (newoff) { |
217 | if (SvFAKE(sv)) | |
218 | continue; | |
4fdae800 | 219 | return 0; /* don't clone from inactive stack frame */ |
9607fc9c | 220 | } |
5f05dabc | 221 | depth = 1; |
222 | } | |
223 | oldpad = (AV*)*av_fetch(curlist, depth, FALSE); | |
224 | oldsv = *av_fetch(oldpad, off, TRUE); | |
748a9306 | 225 | if (!newoff) { /* Not a mere clone operation. */ |
9607fc9c | 226 | SV *namesv = NEWSV(1103,0); |
748a9306 | 227 | newoff = pad_alloc(OP_PADSV, SVs_PADMY); |
9607fc9c | 228 | sv_upgrade(namesv, SVt_PVNV); |
229 | sv_setpv(namesv, name); | |
3280af22 | 230 | av_store(PL_comppad_name, newoff, namesv); |
65202027 | 231 | SvNVX(namesv) = (NV)PL_curcop->cop_seq; |
c53d7c7d | 232 | SvIVX(namesv) = PAD_MAX; /* A ref, intro immediately */ |
9607fc9c | 233 | SvFAKE_on(namesv); /* A ref, not a real var */ |
87671ffc | 234 | if (SvOBJECT(sv)) { /* A typed var */ |
3d93dc8b GS |
235 | SvOBJECT_on(namesv); |
236 | (void)SvUPGRADE(namesv, SVt_PVMG); | |
87671ffc | 237 | SvSTASH(namesv) = (HV*)SvREFCNT_inc((SV*)SvSTASH(sv)); |
3d93dc8b GS |
238 | PL_sv_objcount++; |
239 | } | |
3280af22 | 240 | if (CvANON(PL_compcv) || SvTYPE(PL_compcv) == SVt_PVFM) { |
28757baa | 241 | /* "It's closures all the way down." */ |
3280af22 | 242 | CvCLONE_on(PL_compcv); |
54310121 | 243 | if (cv == startcv) { |
3280af22 | 244 | if (CvANON(PL_compcv)) |
54310121 | 245 | oldsv = Nullsv; /* no need to keep ref */ |
246 | } | |
247 | else { | |
28757baa | 248 | CV *bcv; |
249 | for (bcv = startcv; | |
250 | bcv && bcv != cv && !CvCLONE(bcv); | |
6b35e009 GS |
251 | bcv = CvOUTSIDE(bcv)) |
252 | { | |
28757baa | 253 | if (CvANON(bcv)) |
254 | CvCLONE_on(bcv); | |
255 | else { | |
6b35e009 GS |
256 | if (ckWARN(WARN_CLOSURE) |
257 | && !CvUNIQUE(bcv) && !CvUNIQUE(cv)) | |
258 | { | |
cea2e8a9 | 259 | Perl_warner(aTHX_ WARN_CLOSURE, |
44a8e56a | 260 | "Variable \"%s\" may be unavailable", |
28757baa | 261 | name); |
6b35e009 | 262 | } |
28757baa | 263 | break; |
264 | } | |
265 | } | |
266 | } | |
267 | } | |
3280af22 | 268 | else if (!CvUNIQUE(PL_compcv)) { |
599cee73 | 269 | if (ckWARN(WARN_CLOSURE) && !SvFAKE(sv) && !CvUNIQUE(cv)) |
cea2e8a9 | 270 | Perl_warner(aTHX_ WARN_CLOSURE, |
599cee73 | 271 | "Variable \"%s\" will not stay shared", name); |
5f05dabc | 272 | } |
748a9306 | 273 | } |
3280af22 | 274 | av_store(PL_comppad, newoff, SvREFCNT_inc(oldsv)); |
748a9306 LW |
275 | return newoff; |
276 | } | |
93a17b20 LW |
277 | } |
278 | } | |
279 | ||
2680586e GS |
280 | if (flags & FINDLEX_NOSEARCH) |
281 | return 0; | |
282 | ||
93a17b20 LW |
283 | /* Nothing in current lexical context--try eval's context, if any. |
284 | * This is necessary to let the perldb get at lexically scoped variables. | |
285 | * XXX This will also probably interact badly with eval tree caching. | |
286 | */ | |
287 | ||
748a9306 | 288 | for (i = cx_ix; i >= 0; i--) { |
93a17b20 | 289 | cx = &cxstack[i]; |
6b35e009 | 290 | switch (CxTYPE(cx)) { |
93a17b20 | 291 | default: |
748a9306 LW |
292 | if (i == 0 && saweval) { |
293 | seq = cxstack[saweval].blk_oldcop->cop_seq; | |
2680586e | 294 | return pad_findlex(name, newoff, seq, PL_main_cv, -1, saweval, 0); |
748a9306 | 295 | } |
93a17b20 LW |
296 | break; |
297 | case CXt_EVAL: | |
44a8e56a | 298 | switch (cx->blk_eval.old_op_type) { |
299 | case OP_ENTEREVAL: | |
6b35e009 GS |
300 | if (CxREALEVAL(cx)) |
301 | saweval = i; | |
44a8e56a | 302 | break; |
303 | case OP_REQUIRE: | |
304 | /* require must have its own scope */ | |
305 | return 0; | |
306 | } | |
93a17b20 LW |
307 | break; |
308 | case CXt_SUB: | |
309 | if (!saweval) | |
310 | return 0; | |
311 | cv = cx->blk_sub.cv; | |
3280af22 | 312 | if (PL_debstash && CvSTASH(cv) == PL_debstash) { /* ignore DB'* scope */ |
748a9306 | 313 | saweval = i; /* so we know where we were called from */ |
93a17b20 | 314 | continue; |
93a17b20 | 315 | } |
748a9306 | 316 | seq = cxstack[saweval].blk_oldcop->cop_seq; |
2680586e | 317 | return pad_findlex(name, newoff, seq, cv, i-1, saweval,FINDLEX_NOSEARCH); |
93a17b20 LW |
318 | } |
319 | } | |
320 | ||
748a9306 LW |
321 | return 0; |
322 | } | |
a0d0e21e | 323 | |
748a9306 | 324 | PADOFFSET |
864dbfa3 | 325 | Perl_pad_findmy(pTHX_ char *name) |
748a9306 | 326 | { |
11343788 | 327 | dTHR; |
748a9306 | 328 | I32 off; |
54310121 | 329 | I32 pendoff = 0; |
748a9306 | 330 | SV *sv; |
3280af22 NIS |
331 | SV **svp = AvARRAY(PL_comppad_name); |
332 | U32 seq = PL_cop_seqmax; | |
6b35e009 | 333 | PERL_CONTEXT *cx; |
33b8ce05 | 334 | CV *outside; |
748a9306 | 335 | |
11343788 MB |
336 | #ifdef USE_THREADS |
337 | /* | |
338 | * Special case to get lexical (and hence per-thread) @_. | |
339 | * XXX I need to find out how to tell at parse-time whether use | |
340 | * of @_ should refer to a lexical (from a sub) or defgv (global | |
341 | * scope and maybe weird sub-ish things like formats). See | |
342 | * startsub in perly.y. It's possible that @_ could be lexical | |
343 | * (at least from subs) even in non-threaded perl. | |
344 | */ | |
345 | if (strEQ(name, "@_")) | |
346 | return 0; /* success. (NOT_IN_PAD indicates failure) */ | |
347 | #endif /* USE_THREADS */ | |
348 | ||
748a9306 | 349 | /* The one we're looking for is probably just before comppad_name_fill. */ |
3280af22 | 350 | for (off = AvFILLp(PL_comppad_name); off > 0; off--) { |
a0d0e21e | 351 | if ((sv = svp[off]) && |
3280af22 | 352 | sv != &PL_sv_undef && |
54310121 | 353 | (!SvIVX(sv) || |
354 | (seq <= SvIVX(sv) && | |
355 | seq > I_32(SvNVX(sv)))) && | |
a0d0e21e LW |
356 | strEQ(SvPVX(sv), name)) |
357 | { | |
54310121 | 358 | if (SvIVX(sv)) |
359 | return (PADOFFSET)off; | |
360 | pendoff = off; /* this pending def. will override import */ | |
a0d0e21e LW |
361 | } |
362 | } | |
748a9306 | 363 | |
33b8ce05 GS |
364 | outside = CvOUTSIDE(PL_compcv); |
365 | ||
366 | /* Check if if we're compiling an eval'', and adjust seq to be the | |
367 | * eval's seq number. This depends on eval'' having a non-null | |
368 | * CvOUTSIDE() while it is being compiled. The eval'' itself is | |
1aff0e91 GS |
369 | * identified by CvEVAL being true and CvGV being null. */ |
370 | if (outside && CvEVAL(PL_compcv) && !CvGV(PL_compcv) && cxstack_ix >= 0) { | |
6b35e009 GS |
371 | cx = &cxstack[cxstack_ix]; |
372 | if (CxREALEVAL(cx)) | |
373 | seq = cx->blk_oldcop->cop_seq; | |
374 | } | |
375 | ||
748a9306 | 376 | /* See if it's in a nested scope */ |
2680586e | 377 | off = pad_findlex(name, 0, seq, outside, cxstack_ix, 0, 0); |
54310121 | 378 | if (off) { |
379 | /* If there is a pending local definition, this new alias must die */ | |
380 | if (pendoff) | |
3280af22 | 381 | SvIVX(AvARRAY(PL_comppad_name)[off]) = seq; |
11343788 | 382 | return off; /* pad_findlex returns 0 for failure...*/ |
54310121 | 383 | } |
11343788 | 384 | return NOT_IN_PAD; /* ...but we return NOT_IN_PAD for failure */ |
93a17b20 LW |
385 | } |
386 | ||
387 | void | |
864dbfa3 | 388 | Perl_pad_leavemy(pTHX_ I32 fill) |
93a17b20 | 389 | { |
0453d815 | 390 | dTHR; |
93a17b20 | 391 | I32 off; |
3280af22 | 392 | SV **svp = AvARRAY(PL_comppad_name); |
93a17b20 | 393 | SV *sv; |
3280af22 NIS |
394 | if (PL_min_intro_pending && fill < PL_min_intro_pending) { |
395 | for (off = PL_max_intro_pending; off >= PL_min_intro_pending; off--) { | |
0453d815 PM |
396 | if ((sv = svp[off]) && sv != &PL_sv_undef && ckWARN_d(WARN_INTERNAL)) |
397 | Perl_warner(aTHX_ WARN_INTERNAL, "%s never introduced", SvPVX(sv)); | |
8990e307 LW |
398 | } |
399 | } | |
400 | /* "Deintroduce" my variables that are leaving with this scope. */ | |
3280af22 | 401 | for (off = AvFILLp(PL_comppad_name); off > fill; off--) { |
c53d7c7d | 402 | if ((sv = svp[off]) && sv != &PL_sv_undef && SvIVX(sv) == PAD_MAX) |
3280af22 | 403 | SvIVX(sv) = PL_cop_seqmax; |
93a17b20 LW |
404 | } |
405 | } | |
406 | ||
407 | PADOFFSET | |
864dbfa3 | 408 | Perl_pad_alloc(pTHX_ I32 optype, U32 tmptype) |
79072805 | 409 | { |
11343788 | 410 | dTHR; |
79072805 LW |
411 | SV *sv; |
412 | I32 retval; | |
413 | ||
3280af22 | 414 | if (AvARRAY(PL_comppad) != PL_curpad) |
cea2e8a9 | 415 | Perl_croak(aTHX_ "panic: pad_alloc"); |
3280af22 | 416 | if (PL_pad_reset_pending) |
a0d0e21e | 417 | pad_reset(); |
ed6116ce | 418 | if (tmptype & SVs_PADMY) { |
79072805 | 419 | do { |
3280af22 | 420 | sv = *av_fetch(PL_comppad, AvFILLp(PL_comppad) + 1, TRUE); |
ed6116ce | 421 | } while (SvPADBUSY(sv)); /* need a fresh one */ |
3280af22 | 422 | retval = AvFILLp(PL_comppad); |
79072805 LW |
423 | } |
424 | else { | |
3280af22 NIS |
425 | SV **names = AvARRAY(PL_comppad_name); |
426 | SSize_t names_fill = AvFILLp(PL_comppad_name); | |
bbce6d69 | 427 | for (;;) { |
428 | /* | |
429 | * "foreach" index vars temporarily become aliases to non-"my" | |
430 | * values. Thus we must skip, not just pad values that are | |
431 | * marked as current pad values, but also those with names. | |
432 | */ | |
3280af22 NIS |
433 | if (++PL_padix <= names_fill && |
434 | (sv = names[PL_padix]) && sv != &PL_sv_undef) | |
bbce6d69 | 435 | continue; |
3280af22 | 436 | sv = *av_fetch(PL_comppad, PL_padix, TRUE); |
bbce6d69 | 437 | if (!(SvFLAGS(sv) & (SVs_PADTMP|SVs_PADMY))) |
438 | break; | |
439 | } | |
3280af22 | 440 | retval = PL_padix; |
79072805 | 441 | } |
8990e307 | 442 | SvFLAGS(sv) |= tmptype; |
3280af22 | 443 | PL_curpad = AvARRAY(PL_comppad); |
11343788 | 444 | #ifdef USE_THREADS |
5dc0d613 | 445 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx alloc %ld for %s\n", |
533c011a | 446 | (unsigned long) thr, (unsigned long) PL_curpad, |
22c35a8c | 447 | (long) retval, PL_op_name[optype])); |
11343788 | 448 | #else |
d9bb4600 | 449 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx alloc %ld for %s\n", |
3280af22 | 450 | (unsigned long) PL_curpad, |
22c35a8c | 451 | (long) retval, PL_op_name[optype])); |
11343788 | 452 | #endif /* USE_THREADS */ |
79072805 LW |
453 | return (PADOFFSET)retval; |
454 | } | |
455 | ||
456 | SV * | |
864dbfa3 | 457 | Perl_pad_sv(pTHX_ PADOFFSET po) |
79072805 | 458 | { |
11343788 MB |
459 | dTHR; |
460 | #ifdef USE_THREADS | |
5dc0d613 | 461 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx sv %d\n", |
533c011a | 462 | (unsigned long) thr, (unsigned long) PL_curpad, po)); |
11343788 | 463 | #else |
79072805 | 464 | if (!po) |
cea2e8a9 | 465 | Perl_croak(aTHX_ "panic: pad_sv po"); |
d9bb4600 | 466 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx sv %d\n", |
3280af22 | 467 | (unsigned long) PL_curpad, po)); |
11343788 | 468 | #endif /* USE_THREADS */ |
3280af22 | 469 | return PL_curpad[po]; /* eventually we'll turn this into a macro */ |
79072805 LW |
470 | } |
471 | ||
472 | void | |
864dbfa3 | 473 | Perl_pad_free(pTHX_ PADOFFSET po) |
79072805 | 474 | { |
11343788 | 475 | dTHR; |
3280af22 | 476 | if (!PL_curpad) |
a0d0e21e | 477 | return; |
3280af22 | 478 | if (AvARRAY(PL_comppad) != PL_curpad) |
cea2e8a9 | 479 | Perl_croak(aTHX_ "panic: pad_free curpad"); |
79072805 | 480 | if (!po) |
cea2e8a9 | 481 | Perl_croak(aTHX_ "panic: pad_free po"); |
11343788 | 482 | #ifdef USE_THREADS |
5dc0d613 | 483 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx free %d\n", |
533c011a | 484 | (unsigned long) thr, (unsigned long) PL_curpad, po)); |
11343788 | 485 | #else |
d9bb4600 | 486 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx free %d\n", |
3280af22 | 487 | (unsigned long) PL_curpad, po)); |
11343788 | 488 | #endif /* USE_THREADS */ |
3280af22 NIS |
489 | if (PL_curpad[po] && PL_curpad[po] != &PL_sv_undef) |
490 | SvPADTMP_off(PL_curpad[po]); | |
491 | if ((I32)po < PL_padix) | |
492 | PL_padix = po - 1; | |
79072805 LW |
493 | } |
494 | ||
495 | void | |
864dbfa3 | 496 | Perl_pad_swipe(pTHX_ PADOFFSET po) |
79072805 | 497 | { |
11343788 | 498 | dTHR; |
3280af22 | 499 | if (AvARRAY(PL_comppad) != PL_curpad) |
cea2e8a9 | 500 | Perl_croak(aTHX_ "panic: pad_swipe curpad"); |
79072805 | 501 | if (!po) |
cea2e8a9 | 502 | Perl_croak(aTHX_ "panic: pad_swipe po"); |
11343788 | 503 | #ifdef USE_THREADS |
5dc0d613 | 504 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx swipe %d\n", |
533c011a | 505 | (unsigned long) thr, (unsigned long) PL_curpad, po)); |
11343788 | 506 | #else |
d9bb4600 | 507 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx swipe %d\n", |
3280af22 | 508 | (unsigned long) PL_curpad, po)); |
11343788 | 509 | #endif /* USE_THREADS */ |
3280af22 NIS |
510 | SvPADTMP_off(PL_curpad[po]); |
511 | PL_curpad[po] = NEWSV(1107,0); | |
512 | SvPADTMP_on(PL_curpad[po]); | |
513 | if ((I32)po < PL_padix) | |
514 | PL_padix = po - 1; | |
79072805 LW |
515 | } |
516 | ||
d9bb4600 GS |
517 | /* XXX pad_reset() is currently disabled because it results in serious bugs. |
518 | * It causes pad temp TARGs to be shared between OPs. Since TARGs are pushed | |
519 | * on the stack by OPs that use them, there are several ways to get an alias | |
520 | * to a shared TARG. Such an alias will change randomly and unpredictably. | |
521 | * We avoid doing this until we can think of a Better Way. | |
522 | * GSAR 97-10-29 */ | |
79072805 | 523 | void |
864dbfa3 | 524 | Perl_pad_reset(pTHX) |
79072805 | 525 | { |
d9bb4600 | 526 | #ifdef USE_BROKEN_PAD_RESET |
11343788 | 527 | dTHR; |
79072805 LW |
528 | register I32 po; |
529 | ||
6b88bc9c | 530 | if (AvARRAY(PL_comppad) != PL_curpad) |
cea2e8a9 | 531 | Perl_croak(aTHX_ "panic: pad_reset curpad"); |
11343788 | 532 | #ifdef USE_THREADS |
5dc0d613 | 533 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx reset\n", |
6b88bc9c | 534 | (unsigned long) thr, (unsigned long) PL_curpad)); |
11343788 | 535 | #else |
d9bb4600 | 536 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx reset\n", |
6b88bc9c | 537 | (unsigned long) PL_curpad)); |
11343788 | 538 | #endif /* USE_THREADS */ |
6b88bc9c GS |
539 | if (!PL_tainting) { /* Can't mix tainted and non-tainted temporaries. */ |
540 | for (po = AvMAX(PL_comppad); po > PL_padix_floor; po--) { | |
541 | if (PL_curpad[po] && !SvIMMORTAL(PL_curpad[po])) | |
542 | SvPADTMP_off(PL_curpad[po]); | |
748a9306 | 543 | } |
6b88bc9c | 544 | PL_padix = PL_padix_floor; |
79072805 | 545 | } |
d9bb4600 | 546 | #endif |
3280af22 | 547 | PL_pad_reset_pending = FALSE; |
79072805 LW |
548 | } |
549 | ||
a863c7d1 | 550 | #ifdef USE_THREADS |
54b9620d | 551 | /* find_threadsv is not reentrant */ |
a863c7d1 | 552 | PADOFFSET |
864dbfa3 | 553 | Perl_find_threadsv(pTHX_ const char *name) |
a863c7d1 MB |
554 | { |
555 | dTHR; | |
556 | char *p; | |
557 | PADOFFSET key; | |
554b3eca | 558 | SV **svp; |
54b9620d | 559 | /* We currently only handle names of a single character */ |
533c011a | 560 | p = strchr(PL_threadsv_names, *name); |
a863c7d1 MB |
561 | if (!p) |
562 | return NOT_IN_PAD; | |
533c011a | 563 | key = p - PL_threadsv_names; |
2d8e6c8d | 564 | MUTEX_LOCK(&thr->mutex); |
54b9620d | 565 | svp = av_fetch(thr->threadsv, key, FALSE); |
2d8e6c8d GS |
566 | if (svp) |
567 | MUTEX_UNLOCK(&thr->mutex); | |
568 | else { | |
554b3eca | 569 | SV *sv = NEWSV(0, 0); |
54b9620d | 570 | av_store(thr->threadsv, key, sv); |
940cb80d | 571 | thr->threadsvp = AvARRAY(thr->threadsv); |
2d8e6c8d | 572 | MUTEX_UNLOCK(&thr->mutex); |
554b3eca MB |
573 | /* |
574 | * Some magic variables used to be automagically initialised | |
575 | * in gv_fetchpv. Those which are now per-thread magicals get | |
576 | * initialised here instead. | |
577 | */ | |
578 | switch (*name) { | |
54b9620d MB |
579 | case '_': |
580 | break; | |
554b3eca MB |
581 | case ';': |
582 | sv_setpv(sv, "\034"); | |
54b9620d | 583 | sv_magic(sv, 0, 0, name, 1); |
554b3eca | 584 | break; |
c277df42 IZ |
585 | case '&': |
586 | case '`': | |
587 | case '\'': | |
533c011a | 588 | PL_sawampersand = TRUE; |
a3f914c5 GS |
589 | /* FALL THROUGH */ |
590 | case '1': | |
591 | case '2': | |
592 | case '3': | |
593 | case '4': | |
594 | case '5': | |
595 | case '6': | |
596 | case '7': | |
597 | case '8': | |
598 | case '9': | |
c277df42 | 599 | SvREADONLY_on(sv); |
d8b5173a | 600 | /* FALL THROUGH */ |
067391ea GS |
601 | |
602 | /* XXX %! tied to Errno.pm needs to be added here. | |
603 | * See gv_fetchpv(). */ | |
604 | /* case '!': */ | |
605 | ||
54b9620d MB |
606 | default: |
607 | sv_magic(sv, 0, 0, name, 1); | |
554b3eca | 608 | } |
8b73bbec | 609 | DEBUG_S(PerlIO_printf(PerlIO_stderr(), |
54b9620d | 610 | "find_threadsv: new SV %p for $%s%c\n", |
554b3eca MB |
611 | sv, (*name < 32) ? "^" : "", |
612 | (*name < 32) ? toCTRL(*name) : *name)); | |
a863c7d1 MB |
613 | } |
614 | return key; | |
615 | } | |
616 | #endif /* USE_THREADS */ | |
617 | ||
79072805 LW |
618 | /* Destructor */ |
619 | ||
620 | void | |
864dbfa3 | 621 | Perl_op_free(pTHX_ OP *o) |
79072805 | 622 | { |
85e6fe83 | 623 | register OP *kid, *nextkid; |
acb36ea4 | 624 | OPCODE type; |
79072805 | 625 | |
5dc0d613 | 626 | if (!o || o->op_seq == (U16)-1) |
79072805 LW |
627 | return; |
628 | ||
11343788 MB |
629 | if (o->op_flags & OPf_KIDS) { |
630 | for (kid = cUNOPo->op_first; kid; kid = nextkid) { | |
85e6fe83 | 631 | nextkid = kid->op_sibling; /* Get before next freeing kid */ |
79072805 | 632 | op_free(kid); |
85e6fe83 | 633 | } |
79072805 | 634 | } |
acb36ea4 GS |
635 | type = o->op_type; |
636 | if (type == OP_NULL) | |
637 | type = o->op_targ; | |
638 | ||
639 | /* COP* is not cleared by op_clear() so that we may track line | |
640 | * numbers etc even after null() */ | |
641 | if (type == OP_NEXTSTATE || type == OP_SETSTATE || type == OP_DBSTATE) | |
642 | cop_free((COP*)o); | |
643 | ||
644 | op_clear(o); | |
645 | ||
646 | #ifdef PL_OP_SLAB_ALLOC | |
647 | if ((char *) o == PL_OpPtr) | |
648 | { | |
649 | } | |
650 | #else | |
651 | Safefree(o); | |
652 | #endif | |
653 | } | |
79072805 | 654 | |
acb36ea4 GS |
655 | STATIC void |
656 | S_op_clear(pTHX_ OP *o) | |
657 | { | |
11343788 | 658 | switch (o->op_type) { |
acb36ea4 GS |
659 | case OP_NULL: /* Was holding old type, if any. */ |
660 | case OP_ENTEREVAL: /* Was holding hints. */ | |
661 | #ifdef USE_THREADS | |
662 | case OP_THREADSV: /* Was holding index into thr->threadsv AV. */ | |
663 | #endif | |
664 | o->op_targ = 0; | |
a0d0e21e | 665 | break; |
554b3eca | 666 | #ifdef USE_THREADS |
8dd3ba40 SM |
667 | case OP_ENTERITER: |
668 | if (!(o->op_flags & OPf_SPECIAL)) | |
669 | break; | |
670 | /* FALL THROUGH */ | |
554b3eca | 671 | #endif /* USE_THREADS */ |
a6006777 | 672 | default: |
ac4c12e7 | 673 | if (!(o->op_flags & OPf_REF) |
0b94c7bb | 674 | || (PL_check[o->op_type] != MEMBER_TO_FPTR(Perl_ck_ftst))) |
a6006777 | 675 | break; |
676 | /* FALL THROUGH */ | |
463ee0b2 | 677 | case OP_GVSV: |
79072805 | 678 | case OP_GV: |
a6006777 | 679 | case OP_AELEMFAST: |
11343788 | 680 | SvREFCNT_dec(cGVOPo->op_gv); |
acb36ea4 | 681 | cGVOPo->op_gv = Nullgv; |
79072805 LW |
682 | break; |
683 | case OP_CONST: | |
11343788 | 684 | SvREFCNT_dec(cSVOPo->op_sv); |
acb36ea4 | 685 | cSVOPo->op_sv = Nullsv; |
79072805 | 686 | break; |
748a9306 LW |
687 | case OP_GOTO: |
688 | case OP_NEXT: | |
689 | case OP_LAST: | |
690 | case OP_REDO: | |
11343788 | 691 | if (o->op_flags & (OPf_SPECIAL|OPf_STACKED|OPf_KIDS)) |
748a9306 LW |
692 | break; |
693 | /* FALL THROUGH */ | |
a0d0e21e | 694 | case OP_TRANS: |
acb36ea4 | 695 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { |
a0ed51b3 | 696 | SvREFCNT_dec(cSVOPo->op_sv); |
acb36ea4 GS |
697 | cSVOPo->op_sv = Nullsv; |
698 | } | |
699 | else { | |
a0ed51b3 | 700 | Safefree(cPVOPo->op_pv); |
acb36ea4 GS |
701 | cPVOPo->op_pv = Nullch; |
702 | } | |
a0d0e21e LW |
703 | break; |
704 | case OP_SUBST: | |
11343788 | 705 | op_free(cPMOPo->op_pmreplroot); |
acb36ea4 | 706 | cPMOPo->op_pmreplroot = Nullop; |
a0d0e21e | 707 | /* FALL THROUGH */ |
748a9306 | 708 | case OP_PUSHRE: |
a0d0e21e | 709 | case OP_MATCH: |
8782bef2 | 710 | case OP_QR: |
c277df42 | 711 | ReREFCNT_dec(cPMOPo->op_pmregexp); |
acb36ea4 | 712 | cPMOPo->op_pmregexp = (REGEXP*)NULL; |
a0d0e21e | 713 | break; |
79072805 LW |
714 | } |
715 | ||
11343788 MB |
716 | if (o->op_targ > 0) |
717 | pad_free(o->op_targ); | |
79072805 LW |
718 | } |
719 | ||
76e3520e | 720 | STATIC void |
3eb57f73 HS |
721 | S_cop_free(pTHX_ COP* cop) |
722 | { | |
723 | Safefree(cop->cop_label); | |
724 | SvREFCNT_dec(cop->cop_filegv); | |
0453d815 | 725 | if (! specialWARN(cop->cop_warnings)) |
3eb57f73 HS |
726 | SvREFCNT_dec(cop->cop_warnings); |
727 | } | |
728 | ||
729 | STATIC void | |
cea2e8a9 | 730 | S_null(pTHX_ OP *o) |
8990e307 | 731 | { |
acb36ea4 GS |
732 | if (o->op_type == OP_NULL) |
733 | return; | |
734 | op_clear(o); | |
11343788 MB |
735 | o->op_targ = o->op_type; |
736 | o->op_type = OP_NULL; | |
22c35a8c | 737 | o->op_ppaddr = PL_ppaddr[OP_NULL]; |
8990e307 LW |
738 | } |
739 | ||
79072805 LW |
740 | /* Contextualizers */ |
741 | ||
463ee0b2 | 742 | #define LINKLIST(o) ((o)->op_next ? (o)->op_next : linklist((OP*)o)) |
79072805 LW |
743 | |
744 | OP * | |
864dbfa3 | 745 | Perl_linklist(pTHX_ OP *o) |
79072805 LW |
746 | { |
747 | register OP *kid; | |
748 | ||
11343788 MB |
749 | if (o->op_next) |
750 | return o->op_next; | |
79072805 LW |
751 | |
752 | /* establish postfix order */ | |
11343788 MB |
753 | if (cUNOPo->op_first) { |
754 | o->op_next = LINKLIST(cUNOPo->op_first); | |
755 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) { | |
79072805 LW |
756 | if (kid->op_sibling) |
757 | kid->op_next = LINKLIST(kid->op_sibling); | |
758 | else | |
11343788 | 759 | kid->op_next = o; |
79072805 LW |
760 | } |
761 | } | |
762 | else | |
11343788 | 763 | o->op_next = o; |
79072805 | 764 | |
11343788 | 765 | return o->op_next; |
79072805 LW |
766 | } |
767 | ||
768 | OP * | |
864dbfa3 | 769 | Perl_scalarkids(pTHX_ OP *o) |
79072805 LW |
770 | { |
771 | OP *kid; | |
11343788 MB |
772 | if (o && o->op_flags & OPf_KIDS) { |
773 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
79072805 LW |
774 | scalar(kid); |
775 | } | |
11343788 | 776 | return o; |
79072805 LW |
777 | } |
778 | ||
76e3520e | 779 | STATIC OP * |
cea2e8a9 | 780 | S_scalarboolean(pTHX_ OP *o) |
8990e307 | 781 | { |
d008e5eb | 782 | if (o->op_type == OP_SASSIGN && cBINOPo->op_first->op_type == OP_CONST) { |
0f15f207 | 783 | dTHR; |
d008e5eb GS |
784 | if (ckWARN(WARN_SYNTAX)) { |
785 | line_t oldline = PL_curcop->cop_line; | |
a0d0e21e | 786 | |
d008e5eb GS |
787 | if (PL_copline != NOLINE) |
788 | PL_curcop->cop_line = PL_copline; | |
cea2e8a9 | 789 | Perl_warner(aTHX_ WARN_SYNTAX, "Found = in conditional, should be =="); |
d008e5eb GS |
790 | PL_curcop->cop_line = oldline; |
791 | } | |
a0d0e21e | 792 | } |
11343788 | 793 | return scalar(o); |
8990e307 LW |
794 | } |
795 | ||
796 | OP * | |
864dbfa3 | 797 | Perl_scalar(pTHX_ OP *o) |
79072805 LW |
798 | { |
799 | OP *kid; | |
800 | ||
a0d0e21e | 801 | /* assumes no premature commitment */ |
3280af22 | 802 | if (!o || (o->op_flags & OPf_WANT) || PL_error_count |
5dc0d613 | 803 | || o->op_type == OP_RETURN) |
11343788 | 804 | return o; |
79072805 | 805 | |
b162f9ea IZ |
806 | if ((o->op_private & OPpTARGET_MY) |
807 | && (PL_opargs[o->op_type] & OA_TARGLEX)) /* OPp share the meaning */ | |
808 | return scalar(o); /* As if inside SASSIGN */ | |
809 | ||
5dc0d613 | 810 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_SCALAR; |
79072805 | 811 | |
11343788 | 812 | switch (o->op_type) { |
79072805 | 813 | case OP_REPEAT: |
11343788 MB |
814 | if (o->op_private & OPpREPEAT_DOLIST) |
815 | null(((LISTOP*)cBINOPo->op_first)->op_first); | |
816 | scalar(cBINOPo->op_first); | |
8990e307 | 817 | break; |
79072805 LW |
818 | case OP_OR: |
819 | case OP_AND: | |
820 | case OP_COND_EXPR: | |
11343788 | 821 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
8990e307 | 822 | scalar(kid); |
79072805 | 823 | break; |
a0d0e21e | 824 | case OP_SPLIT: |
11343788 | 825 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e LW |
826 | if (!kPMOP->op_pmreplroot) |
827 | deprecate("implicit split to @_"); | |
828 | } | |
829 | /* FALL THROUGH */ | |
79072805 | 830 | case OP_MATCH: |
8782bef2 | 831 | case OP_QR: |
79072805 LW |
832 | case OP_SUBST: |
833 | case OP_NULL: | |
8990e307 | 834 | default: |
11343788 MB |
835 | if (o->op_flags & OPf_KIDS) { |
836 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) | |
8990e307 LW |
837 | scalar(kid); |
838 | } | |
79072805 LW |
839 | break; |
840 | case OP_LEAVE: | |
841 | case OP_LEAVETRY: | |
5dc0d613 | 842 | kid = cLISTOPo->op_first; |
54310121 | 843 | scalar(kid); |
844 | while (kid = kid->op_sibling) { | |
845 | if (kid->op_sibling) | |
846 | scalarvoid(kid); | |
847 | else | |
848 | scalar(kid); | |
849 | } | |
3280af22 | 850 | WITH_THR(PL_curcop = &PL_compiling); |
54310121 | 851 | break; |
748a9306 | 852 | case OP_SCOPE: |
79072805 | 853 | case OP_LINESEQ: |
8990e307 | 854 | case OP_LIST: |
11343788 | 855 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
856 | if (kid->op_sibling) |
857 | scalarvoid(kid); | |
858 | else | |
859 | scalar(kid); | |
860 | } | |
3280af22 | 861 | WITH_THR(PL_curcop = &PL_compiling); |
79072805 LW |
862 | break; |
863 | } | |
11343788 | 864 | return o; |
79072805 LW |
865 | } |
866 | ||
867 | OP * | |
864dbfa3 | 868 | Perl_scalarvoid(pTHX_ OP *o) |
79072805 LW |
869 | { |
870 | OP *kid; | |
8990e307 LW |
871 | char* useless = 0; |
872 | SV* sv; | |
2ebea0a1 GS |
873 | U8 want; |
874 | ||
acb36ea4 GS |
875 | if (o->op_type == OP_NEXTSTATE |
876 | || o->op_type == OP_SETSTATE | |
877 | || o->op_type == OP_DBSTATE | |
878 | || (o->op_type == OP_NULL && (o->op_targ == OP_NEXTSTATE | |
879 | || o->op_targ == OP_SETSTATE | |
880 | || o->op_targ == OP_DBSTATE))) | |
2ebea0a1 GS |
881 | { |
882 | dTHR; | |
883 | PL_curcop = (COP*)o; /* for warning below */ | |
884 | } | |
79072805 | 885 | |
54310121 | 886 | /* assumes no premature commitment */ |
2ebea0a1 GS |
887 | want = o->op_flags & OPf_WANT; |
888 | if ((want && want != OPf_WANT_SCALAR) || PL_error_count | |
5dc0d613 | 889 | || o->op_type == OP_RETURN) |
11343788 | 890 | return o; |
79072805 | 891 | |
b162f9ea IZ |
892 | if ((o->op_private & OPpTARGET_MY) |
893 | && (PL_opargs[o->op_type] & OA_TARGLEX)) /* OPp share the meaning */ | |
894 | return scalar(o); /* As if inside SASSIGN */ | |
895 | ||
5dc0d613 | 896 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_VOID; |
79072805 | 897 | |
11343788 | 898 | switch (o->op_type) { |
79072805 | 899 | default: |
22c35a8c | 900 | if (!(PL_opargs[o->op_type] & OA_FOLDCONST)) |
8990e307 | 901 | break; |
36477c24 | 902 | /* FALL THROUGH */ |
903 | case OP_REPEAT: | |
11343788 | 904 | if (o->op_flags & OPf_STACKED) |
8990e307 | 905 | break; |
5d82c453 GA |
906 | goto func_ops; |
907 | case OP_SUBSTR: | |
908 | if (o->op_private == 4) | |
909 | break; | |
8990e307 LW |
910 | /* FALL THROUGH */ |
911 | case OP_GVSV: | |
912 | case OP_WANTARRAY: | |
913 | case OP_GV: | |
914 | case OP_PADSV: | |
915 | case OP_PADAV: | |
916 | case OP_PADHV: | |
917 | case OP_PADANY: | |
918 | case OP_AV2ARYLEN: | |
8990e307 | 919 | case OP_REF: |
a0d0e21e LW |
920 | case OP_REFGEN: |
921 | case OP_SREFGEN: | |
8990e307 LW |
922 | case OP_DEFINED: |
923 | case OP_HEX: | |
924 | case OP_OCT: | |
925 | case OP_LENGTH: | |
8990e307 LW |
926 | case OP_VEC: |
927 | case OP_INDEX: | |
928 | case OP_RINDEX: | |
929 | case OP_SPRINTF: | |
930 | case OP_AELEM: | |
931 | case OP_AELEMFAST: | |
932 | case OP_ASLICE: | |
8990e307 LW |
933 | case OP_HELEM: |
934 | case OP_HSLICE: | |
935 | case OP_UNPACK: | |
936 | case OP_PACK: | |
8990e307 LW |
937 | case OP_JOIN: |
938 | case OP_LSLICE: | |
939 | case OP_ANONLIST: | |
940 | case OP_ANONHASH: | |
941 | case OP_SORT: | |
942 | case OP_REVERSE: | |
943 | case OP_RANGE: | |
944 | case OP_FLIP: | |
945 | case OP_FLOP: | |
946 | case OP_CALLER: | |
947 | case OP_FILENO: | |
948 | case OP_EOF: | |
949 | case OP_TELL: | |
950 | case OP_GETSOCKNAME: | |
951 | case OP_GETPEERNAME: | |
952 | case OP_READLINK: | |
953 | case OP_TELLDIR: | |
954 | case OP_GETPPID: | |
955 | case OP_GETPGRP: | |
956 | case OP_GETPRIORITY: | |
957 | case OP_TIME: | |
958 | case OP_TMS: | |
959 | case OP_LOCALTIME: | |
960 | case OP_GMTIME: | |
961 | case OP_GHBYNAME: | |
962 | case OP_GHBYADDR: | |
963 | case OP_GHOSTENT: | |
964 | case OP_GNBYNAME: | |
965 | case OP_GNBYADDR: | |
966 | case OP_GNETENT: | |
967 | case OP_GPBYNAME: | |
968 | case OP_GPBYNUMBER: | |
969 | case OP_GPROTOENT: | |
970 | case OP_GSBYNAME: | |
971 | case OP_GSBYPORT: | |
972 | case OP_GSERVENT: | |
973 | case OP_GPWNAM: | |
974 | case OP_GPWUID: | |
975 | case OP_GGRNAM: | |
976 | case OP_GGRGID: | |
977 | case OP_GETLOGIN: | |
5d82c453 | 978 | func_ops: |
11343788 | 979 | if (!(o->op_private & OPpLVAL_INTRO)) |
22c35a8c | 980 | useless = PL_op_desc[o->op_type]; |
8990e307 LW |
981 | break; |
982 | ||
983 | case OP_RV2GV: | |
984 | case OP_RV2SV: | |
985 | case OP_RV2AV: | |
986 | case OP_RV2HV: | |
11343788 MB |
987 | if (!(o->op_private & OPpLVAL_INTRO) && |
988 | (!o->op_sibling || o->op_sibling->op_type != OP_READLINE)) | |
8990e307 LW |
989 | useless = "a variable"; |
990 | break; | |
79072805 LW |
991 | |
992 | case OP_CONST: | |
11343788 | 993 | sv = cSVOPo->op_sv; |
7a52d87a GS |
994 | if (cSVOPo->op_private & OPpCONST_STRICT) |
995 | no_bareword_allowed(o); | |
996 | else { | |
d008e5eb GS |
997 | dTHR; |
998 | if (ckWARN(WARN_VOID)) { | |
999 | useless = "a constant"; | |
1000 | if (SvNIOK(sv) && (SvNV(sv) == 0.0 || SvNV(sv) == 1.0)) | |
1001 | useless = 0; | |
1002 | else if (SvPOK(sv)) { | |
1003 | if (strnEQ(SvPVX(sv), "di", 2) || | |
1004 | strnEQ(SvPVX(sv), "ds", 2) || | |
1005 | strnEQ(SvPVX(sv), "ig", 2)) | |
1006 | useless = 0; | |
1007 | } | |
8990e307 LW |
1008 | } |
1009 | } | |
acb36ea4 | 1010 | null(o); /* don't execute or even remember it */ |
79072805 LW |
1011 | break; |
1012 | ||
1013 | case OP_POSTINC: | |
11343788 | 1014 | o->op_type = OP_PREINC; /* pre-increment is faster */ |
22c35a8c | 1015 | o->op_ppaddr = PL_ppaddr[OP_PREINC]; |
79072805 LW |
1016 | break; |
1017 | ||
1018 | case OP_POSTDEC: | |
11343788 | 1019 | o->op_type = OP_PREDEC; /* pre-decrement is faster */ |
22c35a8c | 1020 | o->op_ppaddr = PL_ppaddr[OP_PREDEC]; |
79072805 LW |
1021 | break; |
1022 | ||
79072805 LW |
1023 | case OP_OR: |
1024 | case OP_AND: | |
1025 | case OP_COND_EXPR: | |
11343788 | 1026 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
1027 | scalarvoid(kid); |
1028 | break; | |
5aabfad6 | 1029 | |
a0d0e21e | 1030 | case OP_NULL: |
11343788 | 1031 | if (o->op_flags & OPf_STACKED) |
a0d0e21e | 1032 | break; |
5aabfad6 | 1033 | /* FALL THROUGH */ |
2ebea0a1 GS |
1034 | case OP_NEXTSTATE: |
1035 | case OP_DBSTATE: | |
79072805 LW |
1036 | case OP_ENTERTRY: |
1037 | case OP_ENTER: | |
1038 | case OP_SCALAR: | |
11343788 | 1039 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1040 | break; |
54310121 | 1041 | /* FALL THROUGH */ |
463ee0b2 | 1042 | case OP_SCOPE: |
79072805 LW |
1043 | case OP_LEAVE: |
1044 | case OP_LEAVETRY: | |
a0d0e21e | 1045 | case OP_LEAVELOOP: |
79072805 | 1046 | case OP_LINESEQ: |
79072805 | 1047 | case OP_LIST: |
11343788 | 1048 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
1049 | scalarvoid(kid); |
1050 | break; | |
c90c0ff4 | 1051 | case OP_ENTEREVAL: |
5196be3e | 1052 | scalarkids(o); |
c90c0ff4 | 1053 | break; |
5aabfad6 | 1054 | case OP_REQUIRE: |
c90c0ff4 | 1055 | /* all requires must return a boolean value */ |
5196be3e MB |
1056 | o->op_flags &= ~OPf_WANT; |
1057 | return scalar(o); | |
a0d0e21e | 1058 | case OP_SPLIT: |
11343788 | 1059 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e LW |
1060 | if (!kPMOP->op_pmreplroot) |
1061 | deprecate("implicit split to @_"); | |
1062 | } | |
1063 | break; | |
79072805 | 1064 | } |
d008e5eb GS |
1065 | if (useless) { |
1066 | dTHR; | |
1067 | if (ckWARN(WARN_VOID)) | |
cea2e8a9 | 1068 | Perl_warner(aTHX_ WARN_VOID, "Useless use of %s in void context", useless); |
d008e5eb | 1069 | } |
11343788 | 1070 | return o; |
79072805 LW |
1071 | } |
1072 | ||
1073 | OP * | |
864dbfa3 | 1074 | Perl_listkids(pTHX_ OP *o) |
79072805 LW |
1075 | { |
1076 | OP *kid; | |
11343788 MB |
1077 | if (o && o->op_flags & OPf_KIDS) { |
1078 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
79072805 LW |
1079 | list(kid); |
1080 | } | |
11343788 | 1081 | return o; |
79072805 LW |
1082 | } |
1083 | ||
1084 | OP * | |
864dbfa3 | 1085 | Perl_list(pTHX_ OP *o) |
79072805 LW |
1086 | { |
1087 | OP *kid; | |
1088 | ||
a0d0e21e | 1089 | /* assumes no premature commitment */ |
3280af22 | 1090 | if (!o || (o->op_flags & OPf_WANT) || PL_error_count |
5dc0d613 | 1091 | || o->op_type == OP_RETURN) |
11343788 | 1092 | return o; |
79072805 | 1093 | |
b162f9ea IZ |
1094 | if ((o->op_private & OPpTARGET_MY) |
1095 | && (PL_opargs[o->op_type] & OA_TARGLEX)) /* OPp share the meaning */ | |
1096 | return o; /* As if inside SASSIGN */ | |
1097 | ||
5dc0d613 | 1098 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_LIST; |
79072805 | 1099 | |
11343788 | 1100 | switch (o->op_type) { |
79072805 LW |
1101 | case OP_FLOP: |
1102 | case OP_REPEAT: | |
11343788 | 1103 | list(cBINOPo->op_first); |
79072805 LW |
1104 | break; |
1105 | case OP_OR: | |
1106 | case OP_AND: | |
1107 | case OP_COND_EXPR: | |
11343788 | 1108 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
1109 | list(kid); |
1110 | break; | |
1111 | default: | |
1112 | case OP_MATCH: | |
8782bef2 | 1113 | case OP_QR: |
79072805 LW |
1114 | case OP_SUBST: |
1115 | case OP_NULL: | |
11343788 | 1116 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1117 | break; |
11343788 MB |
1118 | if (!o->op_next && cUNOPo->op_first->op_type == OP_FLOP) { |
1119 | list(cBINOPo->op_first); | |
1120 | return gen_constant_list(o); | |
79072805 LW |
1121 | } |
1122 | case OP_LIST: | |
11343788 | 1123 | listkids(o); |
79072805 LW |
1124 | break; |
1125 | case OP_LEAVE: | |
1126 | case OP_LEAVETRY: | |
5dc0d613 | 1127 | kid = cLISTOPo->op_first; |
54310121 | 1128 | list(kid); |
1129 | while (kid = kid->op_sibling) { | |
1130 | if (kid->op_sibling) | |
1131 | scalarvoid(kid); | |
1132 | else | |
1133 | list(kid); | |
1134 | } | |
3280af22 | 1135 | WITH_THR(PL_curcop = &PL_compiling); |
54310121 | 1136 | break; |
748a9306 | 1137 | case OP_SCOPE: |
79072805 | 1138 | case OP_LINESEQ: |
11343788 | 1139 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
1140 | if (kid->op_sibling) |
1141 | scalarvoid(kid); | |
1142 | else | |
1143 | list(kid); | |
1144 | } | |
3280af22 | 1145 | WITH_THR(PL_curcop = &PL_compiling); |
79072805 | 1146 | break; |
c90c0ff4 | 1147 | case OP_REQUIRE: |
1148 | /* all requires must return a boolean value */ | |
5196be3e MB |
1149 | o->op_flags &= ~OPf_WANT; |
1150 | return scalar(o); | |
79072805 | 1151 | } |
11343788 | 1152 | return o; |
79072805 LW |
1153 | } |
1154 | ||
1155 | OP * | |
864dbfa3 | 1156 | Perl_scalarseq(pTHX_ OP *o) |
79072805 LW |
1157 | { |
1158 | OP *kid; | |
1159 | ||
11343788 MB |
1160 | if (o) { |
1161 | if (o->op_type == OP_LINESEQ || | |
1162 | o->op_type == OP_SCOPE || | |
1163 | o->op_type == OP_LEAVE || | |
1164 | o->op_type == OP_LEAVETRY) | |
463ee0b2 | 1165 | { |
0f15f207 | 1166 | dTHR; |
11343788 | 1167 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
ed6116ce | 1168 | if (kid->op_sibling) { |
463ee0b2 | 1169 | scalarvoid(kid); |
ed6116ce | 1170 | } |
463ee0b2 | 1171 | } |
3280af22 | 1172 | PL_curcop = &PL_compiling; |
79072805 | 1173 | } |
11343788 | 1174 | o->op_flags &= ~OPf_PARENS; |
3280af22 | 1175 | if (PL_hints & HINT_BLOCK_SCOPE) |
11343788 | 1176 | o->op_flags |= OPf_PARENS; |
79072805 | 1177 | } |
8990e307 | 1178 | else |
11343788 MB |
1179 | o = newOP(OP_STUB, 0); |
1180 | return o; | |
79072805 LW |
1181 | } |
1182 | ||
76e3520e | 1183 | STATIC OP * |
cea2e8a9 | 1184 | S_modkids(pTHX_ OP *o, I32 type) |
79072805 LW |
1185 | { |
1186 | OP *kid; | |
11343788 MB |
1187 | if (o && o->op_flags & OPf_KIDS) { |
1188 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
463ee0b2 | 1189 | mod(kid, type); |
79072805 | 1190 | } |
11343788 | 1191 | return o; |
79072805 LW |
1192 | } |
1193 | ||
79072805 | 1194 | OP * |
864dbfa3 | 1195 | Perl_mod(pTHX_ OP *o, I32 type) |
79072805 | 1196 | { |
11343788 | 1197 | dTHR; |
79072805 LW |
1198 | OP *kid; |
1199 | SV *sv; | |
2d8e6c8d | 1200 | STRLEN n_a; |
79072805 | 1201 | |
3280af22 | 1202 | if (!o || PL_error_count) |
11343788 | 1203 | return o; |
79072805 | 1204 | |
b162f9ea IZ |
1205 | if ((o->op_private & OPpTARGET_MY) |
1206 | && (PL_opargs[o->op_type] & OA_TARGLEX)) /* OPp share the meaning */ | |
1207 | return o; | |
1208 | ||
11343788 | 1209 | switch (o->op_type) { |
68dc0745 | 1210 | case OP_UNDEF: |
3280af22 | 1211 | PL_modcount++; |
5dc0d613 | 1212 | return o; |
a0d0e21e | 1213 | case OP_CONST: |
11343788 | 1214 | if (!(o->op_private & (OPpCONST_ARYBASE))) |
a0d0e21e | 1215 | goto nomod; |
3280af22 NIS |
1216 | if (PL_eval_start && PL_eval_start->op_type == OP_CONST) { |
1217 | PL_compiling.cop_arybase = (I32)SvIV(((SVOP*)PL_eval_start)->op_sv); | |
1218 | PL_eval_start = 0; | |
a0d0e21e LW |
1219 | } |
1220 | else if (!type) { | |
3280af22 NIS |
1221 | SAVEI32(PL_compiling.cop_arybase); |
1222 | PL_compiling.cop_arybase = 0; | |
a0d0e21e LW |
1223 | } |
1224 | else if (type == OP_REFGEN) | |
1225 | goto nomod; | |
1226 | else | |
cea2e8a9 | 1227 | Perl_croak(aTHX_ "That use of $[ is unsupported"); |
a0d0e21e | 1228 | break; |
5f05dabc | 1229 | case OP_STUB: |
5196be3e | 1230 | if (o->op_flags & OPf_PARENS) |
5f05dabc | 1231 | break; |
1232 | goto nomod; | |
a0d0e21e LW |
1233 | case OP_ENTERSUB: |
1234 | if ((type == OP_UNDEF || type == OP_REFGEN) && | |
11343788 MB |
1235 | !(o->op_flags & OPf_STACKED)) { |
1236 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
22c35a8c | 1237 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 MB |
1238 | assert(cUNOPo->op_first->op_type == OP_NULL); |
1239 | null(((LISTOP*)cUNOPo->op_first)->op_first);/* disable pushmark */ | |
79072805 LW |
1240 | break; |
1241 | } | |
cd06dffe GS |
1242 | else { /* lvalue subroutine call */ |
1243 | o->op_private |= OPpLVAL_INTRO; | |
1244 | if (type == OP_GREPSTART || type == OP_ENTERSUB) { | |
1245 | /* Backward compatibility mode: */ | |
1246 | o->op_private |= OPpENTERSUB_INARGS; | |
1247 | break; | |
1248 | } | |
1249 | else { /* Compile-time error message: */ | |
1250 | OP *kid = cUNOPo->op_first; | |
1251 | CV *cv; | |
1252 | OP *okid; | |
1253 | ||
1254 | if (kid->op_type == OP_PUSHMARK) | |
1255 | goto skip_kids; | |
1256 | if (kid->op_type != OP_NULL || kid->op_targ != OP_LIST) | |
1257 | Perl_croak(aTHX_ | |
1258 | "panic: unexpected lvalue entersub " | |
1259 | "args: type/targ %ld:%ld", | |
1260 | (long)kid->op_type,kid->op_targ); | |
1261 | kid = kLISTOP->op_first; | |
1262 | skip_kids: | |
1263 | while (kid->op_sibling) | |
1264 | kid = kid->op_sibling; | |
1265 | if (!(kid->op_type == OP_NULL && kid->op_targ == OP_RV2CV)) { | |
1266 | /* Indirect call */ | |
1267 | if (kid->op_type == OP_METHOD_NAMED | |
1268 | || kid->op_type == OP_METHOD) | |
1269 | { | |
1270 | OP *new; | |
1271 | ||
1272 | if (kid->op_sibling || kid->op_next != kid) { | |
1273 | yyerror("panic: unexpected optree near method call"); | |
1274 | break; | |
1275 | } | |
1276 | ||
1277 | NewOp(1101, new, 1, OP); | |
1278 | new->op_type = OP_RV2CV; | |
1279 | new->op_ppaddr = PL_ppaddr[OP_RV2CV]; | |
1280 | new->op_next = new; | |
1281 | kid->op_sibling = new; | |
1282 | new->op_private |= OPpLVAL_INTRO; | |
1283 | break; | |
1284 | } | |
1285 | ||
1286 | if (kid->op_type != OP_RV2CV) | |
1287 | Perl_croak(aTHX_ | |
1288 | "panic: unexpected lvalue entersub " | |
1289 | "entry via type/targ %ld:%ld", | |
1290 | (long)kid->op_type,kid->op_targ); | |
1291 | kid->op_private |= OPpLVAL_INTRO; | |
1292 | break; /* Postpone until runtime */ | |
1293 | } | |
1294 | ||
1295 | okid = kid; | |
1296 | kid = kUNOP->op_first; | |
1297 | if (kid->op_type == OP_NULL && kid->op_targ == OP_RV2SV) | |
1298 | kid = kUNOP->op_first; | |
1299 | if (kid->op_type == OP_NULL) | |
1300 | Perl_croak(aTHX_ | |
1301 | "Unexpected constant lvalue entersub " | |
1302 | "entry via type/targ %ld:%ld", | |
1303 | (long)kid->op_type,kid->op_targ); | |
1304 | if (kid->op_type != OP_GV) { | |
1305 | /* Restore RV2CV to check lvalueness */ | |
1306 | restore_2cv: | |
1307 | if (kid->op_next && kid->op_next != kid) { /* Happens? */ | |
1308 | okid->op_next = kid->op_next; | |
1309 | kid->op_next = okid; | |
1310 | } | |
1311 | else | |
1312 | okid->op_next = Nullop; | |
1313 | okid->op_type = OP_RV2CV; | |
1314 | okid->op_targ = 0; | |
1315 | okid->op_ppaddr = PL_ppaddr[OP_RV2CV]; | |
1316 | okid->op_private |= OPpLVAL_INTRO; | |
1317 | break; | |
1318 | } | |
1319 | ||
1320 | cv = GvCV(kGVOP->op_gv); | |
1321 | if (!cv) | |
1322 | goto restore_2cv; | |
1323 | if (CvLVALUE(cv)) | |
1324 | break; | |
1325 | } | |
1326 | } | |
79072805 LW |
1327 | /* FALL THROUGH */ |
1328 | default: | |
a0d0e21e LW |
1329 | nomod: |
1330 | /* grep, foreach, subcalls, refgen */ | |
1331 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) | |
1332 | break; | |
cea2e8a9 | 1333 | yyerror(Perl_form(aTHX_ "Can't modify %s in %s", |
638bc118 | 1334 | (o->op_type == OP_NULL && (o->op_flags & OPf_SPECIAL) |
cd06dffe GS |
1335 | ? "do block" |
1336 | : (o->op_type == OP_ENTERSUB | |
1337 | ? "non-lvalue subroutine call" | |
1338 | : PL_op_desc[o->op_type])), | |
22c35a8c | 1339 | type ? PL_op_desc[type] : "local")); |
11343788 | 1340 | return o; |
79072805 | 1341 | |
a0d0e21e LW |
1342 | case OP_PREINC: |
1343 | case OP_PREDEC: | |
1344 | case OP_POW: | |
1345 | case OP_MULTIPLY: | |
1346 | case OP_DIVIDE: | |
1347 | case OP_MODULO: | |
1348 | case OP_REPEAT: | |
1349 | case OP_ADD: | |
1350 | case OP_SUBTRACT: | |
1351 | case OP_CONCAT: | |
1352 | case OP_LEFT_SHIFT: | |
1353 | case OP_RIGHT_SHIFT: | |
1354 | case OP_BIT_AND: | |
1355 | case OP_BIT_XOR: | |
1356 | case OP_BIT_OR: | |
1357 | case OP_I_MULTIPLY: | |
1358 | case OP_I_DIVIDE: | |
1359 | case OP_I_MODULO: | |
1360 | case OP_I_ADD: | |
1361 | case OP_I_SUBTRACT: | |
11343788 | 1362 | if (!(o->op_flags & OPf_STACKED)) |
a0d0e21e | 1363 | goto nomod; |
3280af22 | 1364 | PL_modcount++; |
a0d0e21e LW |
1365 | break; |
1366 | ||
79072805 | 1367 | case OP_COND_EXPR: |
11343788 | 1368 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 | 1369 | mod(kid, type); |
79072805 LW |
1370 | break; |
1371 | ||
1372 | case OP_RV2AV: | |
1373 | case OP_RV2HV: | |
93af7a87 | 1374 | if (!type && cUNOPo->op_first->op_type != OP_GV) |
cea2e8a9 | 1375 | Perl_croak(aTHX_ "Can't localize through a reference"); |
11343788 | 1376 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) { |
3280af22 | 1377 | PL_modcount = 10000; |
11343788 | 1378 | return o; /* Treat \(@foo) like ordinary list. */ |
748a9306 LW |
1379 | } |
1380 | /* FALL THROUGH */ | |
79072805 | 1381 | case OP_RV2GV: |
5dc0d613 | 1382 | if (scalar_mod_type(o, type)) |
3fe9a6f1 | 1383 | goto nomod; |
11343788 | 1384 | ref(cUNOPo->op_first, o->op_type); |
79072805 LW |
1385 | /* FALL THROUGH */ |
1386 | case OP_AASSIGN: | |
1387 | case OP_ASLICE: | |
1388 | case OP_HSLICE: | |
93a17b20 LW |
1389 | case OP_NEXTSTATE: |
1390 | case OP_DBSTATE: | |
a0d0e21e LW |
1391 | case OP_REFGEN: |
1392 | case OP_CHOMP: | |
3280af22 | 1393 | PL_modcount = 10000; |
79072805 | 1394 | break; |
463ee0b2 | 1395 | case OP_RV2SV: |
11343788 | 1396 | if (!type && cUNOPo->op_first->op_type != OP_GV) |
cea2e8a9 | 1397 | Perl_croak(aTHX_ "Can't localize through a reference"); |
aeea060c | 1398 | ref(cUNOPo->op_first, o->op_type); |
463ee0b2 | 1399 | /* FALL THROUGH */ |
79072805 | 1400 | case OP_GV: |
463ee0b2 | 1401 | case OP_AV2ARYLEN: |
3280af22 | 1402 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 1403 | case OP_SASSIGN: |
bf4b1e52 GS |
1404 | case OP_ANDASSIGN: |
1405 | case OP_ORASSIGN: | |
8990e307 | 1406 | case OP_AELEMFAST: |
3280af22 | 1407 | PL_modcount++; |
8990e307 LW |
1408 | break; |
1409 | ||
748a9306 LW |
1410 | case OP_PADAV: |
1411 | case OP_PADHV: | |
3280af22 | 1412 | PL_modcount = 10000; |
5196be3e MB |
1413 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) |
1414 | return o; /* Treat \(@foo) like ordinary list. */ | |
1415 | if (scalar_mod_type(o, type)) | |
3fe9a6f1 | 1416 | goto nomod; |
748a9306 LW |
1417 | /* FALL THROUGH */ |
1418 | case OP_PADSV: | |
3280af22 | 1419 | PL_modcount++; |
748a9306 | 1420 | if (!type) |
cea2e8a9 | 1421 | Perl_croak(aTHX_ "Can't localize lexical variable %s", |
2d8e6c8d | 1422 | SvPV(*av_fetch(PL_comppad_name, o->op_targ, 4), n_a)); |
463ee0b2 LW |
1423 | break; |
1424 | ||
554b3eca | 1425 | #ifdef USE_THREADS |
2faa37cc | 1426 | case OP_THREADSV: |
533c011a | 1427 | PL_modcount++; /* XXX ??? */ |
554b3eca MB |
1428 | break; |
1429 | #endif /* USE_THREADS */ | |
1430 | ||
748a9306 LW |
1431 | case OP_PUSHMARK: |
1432 | break; | |
a0d0e21e | 1433 | |
69969c6f SB |
1434 | case OP_KEYS: |
1435 | if (type != OP_SASSIGN) | |
1436 | goto nomod; | |
5d82c453 GA |
1437 | goto lvalue_func; |
1438 | case OP_SUBSTR: | |
1439 | if (o->op_private == 4) /* don't allow 4 arg substr as lvalue */ | |
1440 | goto nomod; | |
5f05dabc | 1441 | /* FALL THROUGH */ |
a0d0e21e | 1442 | case OP_POS: |
463ee0b2 | 1443 | case OP_VEC: |
5d82c453 | 1444 | lvalue_func: |
11343788 MB |
1445 | pad_free(o->op_targ); |
1446 | o->op_targ = pad_alloc(o->op_type, SVs_PADMY); | |
5dc0d613 | 1447 | assert(SvTYPE(PAD_SV(o->op_targ)) == SVt_NULL); |
11343788 MB |
1448 | if (o->op_flags & OPf_KIDS) |
1449 | mod(cBINOPo->op_first->op_sibling, type); | |
463ee0b2 | 1450 | break; |
a0d0e21e | 1451 | |
463ee0b2 LW |
1452 | case OP_AELEM: |
1453 | case OP_HELEM: | |
11343788 | 1454 | ref(cBINOPo->op_first, o->op_type); |
68dc0745 | 1455 | if (type == OP_ENTERSUB && |
5dc0d613 MB |
1456 | !(o->op_private & (OPpLVAL_INTRO | OPpDEREF))) |
1457 | o->op_private |= OPpLVAL_DEFER; | |
3280af22 | 1458 | PL_modcount++; |
463ee0b2 LW |
1459 | break; |
1460 | ||
1461 | case OP_SCOPE: | |
1462 | case OP_LEAVE: | |
1463 | case OP_ENTER: | |
11343788 MB |
1464 | if (o->op_flags & OPf_KIDS) |
1465 | mod(cLISTOPo->op_last, type); | |
a0d0e21e LW |
1466 | break; |
1467 | ||
1468 | case OP_NULL: | |
638bc118 GS |
1469 | if (o->op_flags & OPf_SPECIAL) /* do BLOCK */ |
1470 | goto nomod; | |
1471 | else if (!(o->op_flags & OPf_KIDS)) | |
463ee0b2 | 1472 | break; |
11343788 MB |
1473 | if (o->op_targ != OP_LIST) { |
1474 | mod(cBINOPo->op_first, type); | |
a0d0e21e LW |
1475 | break; |
1476 | } | |
1477 | /* FALL THROUGH */ | |
463ee0b2 | 1478 | case OP_LIST: |
11343788 | 1479 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1480 | mod(kid, type); |
1481 | break; | |
1482 | } | |
11343788 | 1483 | o->op_flags |= OPf_MOD; |
a0d0e21e LW |
1484 | |
1485 | if (type == OP_AASSIGN || type == OP_SASSIGN) | |
11343788 | 1486 | o->op_flags |= OPf_SPECIAL|OPf_REF; |
a0d0e21e | 1487 | else if (!type) { |
11343788 MB |
1488 | o->op_private |= OPpLVAL_INTRO; |
1489 | o->op_flags &= ~OPf_SPECIAL; | |
3280af22 | 1490 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 1491 | } |
a0d0e21e | 1492 | else if (type != OP_GREPSTART && type != OP_ENTERSUB) |
11343788 MB |
1493 | o->op_flags |= OPf_REF; |
1494 | return o; | |
463ee0b2 LW |
1495 | } |
1496 | ||
864dbfa3 | 1497 | STATIC bool |
cea2e8a9 | 1498 | S_scalar_mod_type(pTHX_ OP *o, I32 type) |
3fe9a6f1 | 1499 | { |
1500 | switch (type) { | |
1501 | case OP_SASSIGN: | |
5196be3e | 1502 | if (o->op_type == OP_RV2GV) |
3fe9a6f1 | 1503 | return FALSE; |
1504 | /* FALL THROUGH */ | |
1505 | case OP_PREINC: | |
1506 | case OP_PREDEC: | |
1507 | case OP_POSTINC: | |
1508 | case OP_POSTDEC: | |
1509 | case OP_I_PREINC: | |
1510 | case OP_I_PREDEC: | |
1511 | case OP_I_POSTINC: | |
1512 | case OP_I_POSTDEC: | |
1513 | case OP_POW: | |
1514 | case OP_MULTIPLY: | |
1515 | case OP_DIVIDE: | |
1516 | case OP_MODULO: | |
1517 | case OP_REPEAT: | |
1518 | case OP_ADD: | |
1519 | case OP_SUBTRACT: | |
1520 | case OP_I_MULTIPLY: | |
1521 | case OP_I_DIVIDE: | |
1522 | case OP_I_MODULO: | |
1523 | case OP_I_ADD: | |
1524 | case OP_I_SUBTRACT: | |
1525 | case OP_LEFT_SHIFT: | |
1526 | case OP_RIGHT_SHIFT: | |
1527 | case OP_BIT_AND: | |
1528 | case OP_BIT_XOR: | |
1529 | case OP_BIT_OR: | |
1530 | case OP_CONCAT: | |
1531 | case OP_SUBST: | |
1532 | case OP_TRANS: | |
49e9fbe6 GS |
1533 | case OP_READ: |
1534 | case OP_SYSREAD: | |
1535 | case OP_RECV: | |
bf4b1e52 GS |
1536 | case OP_ANDASSIGN: |
1537 | case OP_ORASSIGN: | |
3fe9a6f1 | 1538 | return TRUE; |
1539 | default: | |
1540 | return FALSE; | |
1541 | } | |
1542 | } | |
1543 | ||
35cd451c | 1544 | STATIC bool |
cea2e8a9 | 1545 | S_is_handle_constructor(pTHX_ OP *o, I32 argnum) |
35cd451c GS |
1546 | { |
1547 | switch (o->op_type) { | |
1548 | case OP_PIPE_OP: | |
1549 | case OP_SOCKPAIR: | |
1550 | if (argnum == 2) | |
1551 | return TRUE; | |
1552 | /* FALL THROUGH */ | |
1553 | case OP_SYSOPEN: | |
1554 | case OP_OPEN: | |
ded8aa31 | 1555 | case OP_SELECT: /* XXX c.f. SelectSaver.pm */ |
35cd451c GS |
1556 | case OP_SOCKET: |
1557 | case OP_OPEN_DIR: | |
1558 | case OP_ACCEPT: | |
1559 | if (argnum == 1) | |
1560 | return TRUE; | |
1561 | /* FALL THROUGH */ | |
1562 | default: | |
1563 | return FALSE; | |
1564 | } | |
1565 | } | |
1566 | ||
463ee0b2 | 1567 | OP * |
864dbfa3 | 1568 | Perl_refkids(pTHX_ OP *o, I32 type) |
463ee0b2 LW |
1569 | { |
1570 | OP *kid; | |
11343788 MB |
1571 | if (o && o->op_flags & OPf_KIDS) { |
1572 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
463ee0b2 LW |
1573 | ref(kid, type); |
1574 | } | |
11343788 | 1575 | return o; |
463ee0b2 LW |
1576 | } |
1577 | ||
1578 | OP * | |
864dbfa3 | 1579 | Perl_ref(pTHX_ OP *o, I32 type) |
463ee0b2 LW |
1580 | { |
1581 | OP *kid; | |
463ee0b2 | 1582 | |
3280af22 | 1583 | if (!o || PL_error_count) |
11343788 | 1584 | return o; |
463ee0b2 | 1585 | |
11343788 | 1586 | switch (o->op_type) { |
a0d0e21e | 1587 | case OP_ENTERSUB: |
e55aaa0e | 1588 | if ((type == OP_DEFINED || type == OP_LOCK) && |
11343788 MB |
1589 | !(o->op_flags & OPf_STACKED)) { |
1590 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
22c35a8c | 1591 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 MB |
1592 | assert(cUNOPo->op_first->op_type == OP_NULL); |
1593 | null(((LISTOP*)cUNOPo->op_first)->op_first); /* disable pushmark */ | |
1594 | o->op_flags |= OPf_SPECIAL; | |
8990e307 LW |
1595 | } |
1596 | break; | |
aeea060c | 1597 | |
463ee0b2 | 1598 | case OP_COND_EXPR: |
11343788 | 1599 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1600 | ref(kid, type); |
1601 | break; | |
8990e307 | 1602 | case OP_RV2SV: |
35cd451c GS |
1603 | if (type == OP_DEFINED) |
1604 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
11343788 | 1605 | ref(cUNOPo->op_first, o->op_type); |
4633a7c4 LW |
1606 | /* FALL THROUGH */ |
1607 | case OP_PADSV: | |
5f05dabc | 1608 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1609 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1610 | : type == OP_RV2HV ? OPpDEREF_HV | |
1611 | : OPpDEREF_SV); | |
11343788 | 1612 | o->op_flags |= OPf_MOD; |
a0d0e21e | 1613 | } |
8990e307 LW |
1614 | break; |
1615 | ||
2faa37cc | 1616 | case OP_THREADSV: |
a863c7d1 MB |
1617 | o->op_flags |= OPf_MOD; /* XXX ??? */ |
1618 | break; | |
1619 | ||
463ee0b2 LW |
1620 | case OP_RV2AV: |
1621 | case OP_RV2HV: | |
aeea060c | 1622 | o->op_flags |= OPf_REF; |
8990e307 | 1623 | /* FALL THROUGH */ |
463ee0b2 | 1624 | case OP_RV2GV: |
35cd451c GS |
1625 | if (type == OP_DEFINED) |
1626 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
11343788 | 1627 | ref(cUNOPo->op_first, o->op_type); |
463ee0b2 | 1628 | break; |
8990e307 | 1629 | |
463ee0b2 LW |
1630 | case OP_PADAV: |
1631 | case OP_PADHV: | |
aeea060c | 1632 | o->op_flags |= OPf_REF; |
79072805 | 1633 | break; |
aeea060c | 1634 | |
8990e307 | 1635 | case OP_SCALAR: |
79072805 | 1636 | case OP_NULL: |
11343788 | 1637 | if (!(o->op_flags & OPf_KIDS)) |
463ee0b2 | 1638 | break; |
11343788 | 1639 | ref(cBINOPo->op_first, type); |
79072805 LW |
1640 | break; |
1641 | case OP_AELEM: | |
1642 | case OP_HELEM: | |
11343788 | 1643 | ref(cBINOPo->op_first, o->op_type); |
5f05dabc | 1644 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1645 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1646 | : type == OP_RV2HV ? OPpDEREF_HV | |
1647 | : OPpDEREF_SV); | |
11343788 | 1648 | o->op_flags |= OPf_MOD; |
8990e307 | 1649 | } |
79072805 LW |
1650 | break; |
1651 | ||
463ee0b2 | 1652 | case OP_SCOPE: |
79072805 LW |
1653 | case OP_LEAVE: |
1654 | case OP_ENTER: | |
8990e307 | 1655 | case OP_LIST: |
11343788 | 1656 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1657 | break; |
11343788 | 1658 | ref(cLISTOPo->op_last, type); |
79072805 | 1659 | break; |
a0d0e21e LW |
1660 | default: |
1661 | break; | |
79072805 | 1662 | } |
11343788 | 1663 | return scalar(o); |
8990e307 | 1664 | |
79072805 LW |
1665 | } |
1666 | ||
09bef843 SB |
1667 | STATIC OP * |
1668 | S_dup_attrlist(pTHX_ OP *o) | |
1669 | { | |
1670 | OP *rop = Nullop; | |
1671 | ||
1672 | /* An attrlist is either a simple OP_CONST or an OP_LIST with kids, | |
1673 | * where the first kid is OP_PUSHMARK and the remaining ones | |
1674 | * are OP_CONST. We need to push the OP_CONST values. | |
1675 | */ | |
1676 | if (o->op_type == OP_CONST) | |
1677 | rop = newSVOP(OP_CONST, o->op_flags, SvREFCNT_inc(cSVOPo->op_sv)); | |
1678 | else { | |
1679 | assert((o->op_type == OP_LIST) && (o->op_flags & OPf_KIDS)); | |
1680 | for (o = cLISTOPo->op_first; o; o=o->op_sibling) { | |
1681 | if (o->op_type == OP_CONST) | |
1682 | rop = append_elem(OP_LIST, rop, | |
1683 | newSVOP(OP_CONST, o->op_flags, | |
1684 | SvREFCNT_inc(cSVOPo->op_sv))); | |
1685 | } | |
1686 | } | |
1687 | return rop; | |
1688 | } | |
1689 | ||
1690 | STATIC void | |
1691 | S_apply_attrs(pTHX_ HV *stash, SV *target, OP *attrs) | |
1692 | { | |
1693 | OP *modname; /* for 'use' */ | |
1694 | SV *stashsv; | |
1695 | ||
1696 | /* fake up C<use attributes $pkg,$rv,@attrs> */ | |
1697 | ENTER; /* need to protect against side-effects of 'use' */ | |
1698 | SAVEINT(PL_expect); | |
1699 | if (stash && HvNAME(stash)) | |
1700 | stashsv = newSVpv(HvNAME(stash), 0); | |
1701 | else | |
1702 | stashsv = &PL_sv_no; | |
1703 | #define ATTRSMODULE "attributes" | |
1704 | modname = newSVOP(OP_CONST, 0, | |
1705 | newSVpvn(ATTRSMODULE, sizeof(ATTRSMODULE)-1)); | |
1706 | modname->op_private |= OPpCONST_BARE; | |
1707 | /* that flag is required to make 'use' work right */ | |
1708 | utilize(1, start_subparse(FALSE, 0), | |
1709 | Nullop, /* version */ | |
1710 | modname, | |
1711 | prepend_elem(OP_LIST, | |
1712 | newSVOP(OP_CONST, 0, stashsv), | |
1713 | prepend_elem(OP_LIST, | |
1714 | newSVOP(OP_CONST, 0, newRV(target)), | |
1715 | dup_attrlist(attrs)))); | |
1716 | LEAVE; | |
1717 | } | |
1718 | ||
1719 | STATIC OP * | |
1720 | S_my_kid(pTHX_ OP *o, OP *attrs) | |
93a17b20 LW |
1721 | { |
1722 | OP *kid; | |
93a17b20 LW |
1723 | I32 type; |
1724 | ||
3280af22 | 1725 | if (!o || PL_error_count) |
11343788 | 1726 | return o; |
93a17b20 | 1727 | |
11343788 | 1728 | type = o->op_type; |
93a17b20 | 1729 | if (type == OP_LIST) { |
11343788 | 1730 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
09bef843 | 1731 | my_kid(kid, attrs); |
dab48698 | 1732 | } else if (type == OP_UNDEF) { |
7766148a | 1733 | return o; |
dab48698 | 1734 | } else if (type != OP_PADSV && |
93a17b20 LW |
1735 | type != OP_PADAV && |
1736 | type != OP_PADHV && | |
1737 | type != OP_PUSHMARK) | |
1738 | { | |
cea2e8a9 | 1739 | yyerror(Perl_form(aTHX_ "Can't declare %s in my", PL_op_desc[o->op_type])); |
11343788 | 1740 | return o; |
93a17b20 | 1741 | } |
09bef843 SB |
1742 | else if (attrs && type != OP_PUSHMARK) { |
1743 | HV *stash; | |
1744 | SV *padsv; | |
1745 | SV **namesvp; | |
1746 | ||
1747 | /* check for C<my Dog $spot> when deciding package */ | |
1748 | namesvp = av_fetch(PL_comppad_name, o->op_targ, FALSE); | |
1749 | if (namesvp && *namesvp && SvOBJECT(*namesvp) && HvNAME(SvSTASH(*namesvp))) | |
1750 | stash = SvSTASH(*namesvp); | |
1751 | else | |
1752 | stash = PL_curstash; | |
1753 | padsv = PAD_SV(o->op_targ); | |
1754 | apply_attrs(stash, padsv, attrs); | |
1755 | } | |
11343788 MB |
1756 | o->op_flags |= OPf_MOD; |
1757 | o->op_private |= OPpLVAL_INTRO; | |
1758 | return o; | |
93a17b20 LW |
1759 | } |
1760 | ||
1761 | OP * | |
09bef843 SB |
1762 | Perl_my_attrs(pTHX_ OP *o, OP *attrs) |
1763 | { | |
1764 | if (o->op_flags & OPf_PARENS) | |
1765 | list(o); | |
1766 | PL_in_my = FALSE; | |
1767 | PL_in_my_stash = Nullhv; | |
1768 | if (attrs) | |
1769 | SAVEFREEOP(attrs); | |
1770 | return my_kid(o, attrs); | |
1771 | } | |
1772 | ||
1773 | OP * | |
1774 | Perl_my(pTHX_ OP *o) | |
1775 | { | |
1776 | return my_kid(o, Nullop); | |
1777 | } | |
1778 | ||
1779 | OP * | |
864dbfa3 | 1780 | Perl_sawparens(pTHX_ OP *o) |
79072805 LW |
1781 | { |
1782 | if (o) | |
1783 | o->op_flags |= OPf_PARENS; | |
1784 | return o; | |
1785 | } | |
1786 | ||
1787 | OP * | |
864dbfa3 | 1788 | Perl_bind_match(pTHX_ I32 type, OP *left, OP *right) |
79072805 | 1789 | { |
d008e5eb | 1790 | dTHR; |
11343788 | 1791 | OP *o; |
79072805 | 1792 | |
599cee73 PM |
1793 | if (ckWARN(WARN_UNSAFE) && |
1794 | (left->op_type == OP_RV2AV || | |
1795 | left->op_type == OP_RV2HV || | |
1796 | left->op_type == OP_PADAV || | |
1797 | left->op_type == OP_PADHV)) { | |
22c35a8c | 1798 | char *desc = PL_op_desc[(right->op_type == OP_SUBST || |
599cee73 PM |
1799 | right->op_type == OP_TRANS) |
1800 | ? right->op_type : OP_MATCH]; | |
1801 | char *sample = ((left->op_type == OP_RV2AV || | |
1802 | left->op_type == OP_PADAV) | |
1803 | ? "@array" : "%hash"); | |
cea2e8a9 | 1804 | Perl_warner(aTHX_ WARN_UNSAFE, |
599cee73 PM |
1805 | "Applying %s to %s will act on scalar(%s)", |
1806 | desc, sample, sample); | |
2ae324a7 | 1807 | } |
1808 | ||
79072805 LW |
1809 | if (right->op_type == OP_MATCH || |
1810 | right->op_type == OP_SUBST || | |
1811 | right->op_type == OP_TRANS) { | |
1812 | right->op_flags |= OPf_STACKED; | |
1813 | if (right->op_type != OP_MATCH) | |
463ee0b2 | 1814 | left = mod(left, right->op_type); |
79072805 | 1815 | if (right->op_type == OP_TRANS) |
11343788 | 1816 | o = newBINOP(OP_NULL, OPf_STACKED, scalar(left), right); |
79072805 | 1817 | else |
11343788 | 1818 | o = prepend_elem(right->op_type, scalar(left), right); |
79072805 | 1819 | if (type == OP_NOT) |
11343788 MB |
1820 | return newUNOP(OP_NOT, 0, scalar(o)); |
1821 | return o; | |
79072805 LW |
1822 | } |
1823 | else | |
1824 | return bind_match(type, left, | |
1825 | pmruntime(newPMOP(OP_MATCH, 0), right, Nullop)); | |
1826 | } | |
1827 | ||
1828 | OP * | |
864dbfa3 | 1829 | Perl_invert(pTHX_ OP *o) |
79072805 | 1830 | { |
11343788 MB |
1831 | if (!o) |
1832 | return o; | |
79072805 | 1833 | /* XXX need to optimize away NOT NOT here? Or do we let optimizer do it? */ |
11343788 | 1834 | return newUNOP(OP_NOT, OPf_SPECIAL, scalar(o)); |
79072805 LW |
1835 | } |
1836 | ||
1837 | OP * | |
864dbfa3 | 1838 | Perl_scope(pTHX_ OP *o) |
79072805 LW |
1839 | { |
1840 | if (o) { | |
3280af22 | 1841 | if (o->op_flags & OPf_PARENS || PERLDB_NOOPT || PL_tainting) { |
463ee0b2 LW |
1842 | o = prepend_elem(OP_LINESEQ, newOP(OP_ENTER, 0), o); |
1843 | o->op_type = OP_LEAVE; | |
22c35a8c | 1844 | o->op_ppaddr = PL_ppaddr[OP_LEAVE]; |
463ee0b2 LW |
1845 | } |
1846 | else { | |
1847 | if (o->op_type == OP_LINESEQ) { | |
1848 | OP *kid; | |
1849 | o->op_type = OP_SCOPE; | |
22c35a8c | 1850 | o->op_ppaddr = PL_ppaddr[OP_SCOPE]; |
463ee0b2 | 1851 | kid = ((LISTOP*)o)->op_first; |
748a9306 | 1852 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE){ |
7399586d HS |
1853 | kid->op_type = OP_SETSTATE; |
1854 | kid->op_ppaddr = PL_ppaddr[OP_SETSTATE]; | |
748a9306 | 1855 | } |
463ee0b2 LW |
1856 | } |
1857 | else | |
748a9306 | 1858 | o = newLISTOP(OP_SCOPE, 0, o, Nullop); |
463ee0b2 | 1859 | } |
79072805 LW |
1860 | } |
1861 | return o; | |
1862 | } | |
1863 | ||
b3ac6de7 | 1864 | void |
864dbfa3 | 1865 | Perl_save_hints(pTHX) |
b3ac6de7 | 1866 | { |
3280af22 NIS |
1867 | SAVEI32(PL_hints); |
1868 | SAVESPTR(GvHV(PL_hintgv)); | |
1869 | GvHV(PL_hintgv) = newHVhv(GvHV(PL_hintgv)); | |
1870 | SAVEFREESV(GvHV(PL_hintgv)); | |
b3ac6de7 IZ |
1871 | } |
1872 | ||
a0d0e21e | 1873 | int |
864dbfa3 | 1874 | Perl_block_start(pTHX_ int full) |
79072805 | 1875 | { |
11343788 | 1876 | dTHR; |
3280af22 | 1877 | int retval = PL_savestack_ix; |
b3ac6de7 | 1878 | |
3280af22 | 1879 | SAVEI32(PL_comppad_name_floor); |
55497cff | 1880 | if (full) { |
3280af22 NIS |
1881 | if ((PL_comppad_name_fill = AvFILLp(PL_comppad_name)) > 0) |
1882 | PL_comppad_name_floor = PL_comppad_name_fill; | |
55497cff | 1883 | else |
3280af22 NIS |
1884 | PL_comppad_name_floor = 0; |
1885 | } | |
1886 | SAVEI32(PL_min_intro_pending); | |
1887 | SAVEI32(PL_max_intro_pending); | |
1888 | PL_min_intro_pending = 0; | |
1889 | SAVEI32(PL_comppad_name_fill); | |
1890 | SAVEI32(PL_padix_floor); | |
1891 | PL_padix_floor = PL_padix; | |
1892 | PL_pad_reset_pending = FALSE; | |
b3ac6de7 | 1893 | SAVEHINTS(); |
3280af22 | 1894 | PL_hints &= ~HINT_BLOCK_SCOPE; |
e24b16f9 | 1895 | SAVEPPTR(PL_compiling.cop_warnings); |
0453d815 | 1896 | if (! specialWARN(PL_compiling.cop_warnings)) { |
599cee73 PM |
1897 | PL_compiling.cop_warnings = newSVsv(PL_compiling.cop_warnings) ; |
1898 | SAVEFREESV(PL_compiling.cop_warnings) ; | |
1899 | } | |
1900 | ||
1901 | ||
a0d0e21e LW |
1902 | return retval; |
1903 | } | |
1904 | ||
1905 | OP* | |
864dbfa3 | 1906 | Perl_block_end(pTHX_ I32 floor, OP *seq) |
a0d0e21e | 1907 | { |
11343788 | 1908 | dTHR; |
3280af22 | 1909 | int needblockscope = PL_hints & HINT_BLOCK_SCOPE; |
a0d0e21e | 1910 | OP* retval = scalarseq(seq); |
a0d0e21e | 1911 | LEAVE_SCOPE(floor); |
3280af22 | 1912 | PL_pad_reset_pending = FALSE; |
e24b16f9 | 1913 | PL_compiling.op_private = PL_hints; |
a0d0e21e | 1914 | if (needblockscope) |
3280af22 NIS |
1915 | PL_hints |= HINT_BLOCK_SCOPE; /* propagate out */ |
1916 | pad_leavemy(PL_comppad_name_fill); | |
1917 | PL_cop_seqmax++; | |
a0d0e21e LW |
1918 | return retval; |
1919 | } | |
1920 | ||
76e3520e | 1921 | STATIC OP * |
cea2e8a9 | 1922 | S_newDEFSVOP(pTHX) |
54b9620d MB |
1923 | { |
1924 | #ifdef USE_THREADS | |
1925 | OP *o = newOP(OP_THREADSV, 0); | |
1926 | o->op_targ = find_threadsv("_"); | |
1927 | return o; | |
1928 | #else | |
3280af22 | 1929 | return newSVREF(newGVOP(OP_GV, 0, PL_defgv)); |
54b9620d MB |
1930 | #endif /* USE_THREADS */ |
1931 | } | |
1932 | ||
a0d0e21e | 1933 | void |
864dbfa3 | 1934 | Perl_newPROG(pTHX_ OP *o) |
a0d0e21e | 1935 | { |
11343788 | 1936 | dTHR; |
3280af22 | 1937 | if (PL_in_eval) { |
b295d113 TH |
1938 | if (PL_eval_root) |
1939 | return; | |
faef0170 HS |
1940 | PL_eval_root = newUNOP(OP_LEAVEEVAL, |
1941 | ((PL_in_eval & EVAL_KEEPERR) | |
1942 | ? OPf_SPECIAL : 0), o); | |
3280af22 NIS |
1943 | PL_eval_start = linklist(PL_eval_root); |
1944 | PL_eval_root->op_next = 0; | |
1945 | peep(PL_eval_start); | |
a0d0e21e LW |
1946 | } |
1947 | else { | |
5dc0d613 | 1948 | if (!o) |
a0d0e21e | 1949 | return; |
3280af22 NIS |
1950 | PL_main_root = scope(sawparens(scalarvoid(o))); |
1951 | PL_curcop = &PL_compiling; | |
1952 | PL_main_start = LINKLIST(PL_main_root); | |
1953 | PL_main_root->op_next = 0; | |
1954 | peep(PL_main_start); | |
1955 | PL_compcv = 0; | |
3841441e | 1956 | |
4fdae800 | 1957 | /* Register with debugger */ |
84902520 | 1958 | if (PERLDB_INTER) { |
864dbfa3 | 1959 | CV *cv = get_cv("DB::postponed", FALSE); |
3841441e CS |
1960 | if (cv) { |
1961 | dSP; | |
924508f0 | 1962 | PUSHMARK(SP); |
3280af22 | 1963 | XPUSHs((SV*)PL_compiling.cop_filegv); |
3841441e | 1964 | PUTBACK; |
864dbfa3 | 1965 | call_sv((SV*)cv, G_DISCARD); |
3841441e CS |
1966 | } |
1967 | } | |
79072805 | 1968 | } |
79072805 LW |
1969 | } |
1970 | ||
1971 | OP * | |
864dbfa3 | 1972 | Perl_localize(pTHX_ OP *o, I32 lex) |
79072805 LW |
1973 | { |
1974 | if (o->op_flags & OPf_PARENS) | |
1975 | list(o); | |
8990e307 | 1976 | else { |
d008e5eb | 1977 | dTHR; |
599cee73 | 1978 | if (ckWARN(WARN_PARENTHESIS) && PL_bufptr > PL_oldbufptr && PL_bufptr[-1] == ',') { |
8990e307 | 1979 | char *s; |
834a4ddd | 1980 | for (s = PL_bufptr; *s && (isALNUM(*s) || (*s & 0x80) || strchr("@$%, ",*s)); s++) ; |
a0d0e21e | 1981 | if (*s == ';' || *s == '=') |
cea2e8a9 | 1982 | Perl_warner(aTHX_ WARN_PARENTHESIS, "Parentheses missing around \"%s\" list", |
599cee73 | 1983 | lex ? "my" : "local"); |
8990e307 LW |
1984 | } |
1985 | } | |
3280af22 NIS |
1986 | PL_in_my = FALSE; |
1987 | PL_in_my_stash = Nullhv; | |
93a17b20 LW |
1988 | if (lex) |
1989 | return my(o); | |
1990 | else | |
463ee0b2 | 1991 | return mod(o, OP_NULL); /* a bit kludgey */ |
79072805 LW |
1992 | } |
1993 | ||
1994 | OP * | |
864dbfa3 | 1995 | Perl_jmaybe(pTHX_ OP *o) |
79072805 LW |
1996 | { |
1997 | if (o->op_type == OP_LIST) { | |
554b3eca MB |
1998 | OP *o2; |
1999 | #ifdef USE_THREADS | |
2faa37cc | 2000 | o2 = newOP(OP_THREADSV, 0); |
54b9620d | 2001 | o2->op_targ = find_threadsv(";"); |
554b3eca MB |
2002 | #else |
2003 | o2 = newSVREF(newGVOP(OP_GV, 0, gv_fetchpv(";", TRUE, SVt_PV))), | |
2004 | #endif /* USE_THREADS */ | |
2005 | o = convert(OP_JOIN, 0, prepend_elem(OP_LIST, o2, o)); | |
79072805 LW |
2006 | } |
2007 | return o; | |
2008 | } | |
2009 | ||
2010 | OP * | |
864dbfa3 | 2011 | Perl_fold_constants(pTHX_ register OP *o) |
79072805 | 2012 | { |
11343788 | 2013 | dTHR; |
79072805 LW |
2014 | register OP *curop; |
2015 | I32 type = o->op_type; | |
748a9306 | 2016 | SV *sv; |
79072805 | 2017 | |
22c35a8c | 2018 | if (PL_opargs[type] & OA_RETSCALAR) |
79072805 | 2019 | scalar(o); |
b162f9ea | 2020 | if (PL_opargs[type] & OA_TARGET && !o->op_targ) |
ed6116ce | 2021 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 | 2022 | |
eac055e9 GS |
2023 | /* integerize op, unless it happens to be C<-foo>. |
2024 | * XXX should pp_i_negate() do magic string negation instead? */ | |
2025 | if ((PL_opargs[type] & OA_OTHERINT) && (PL_hints & HINT_INTEGER) | |
2026 | && !(type == OP_NEGATE && cUNOPo->op_first->op_type == OP_CONST | |
2027 | && (cUNOPo->op_first->op_private & OPpCONST_BARE))) | |
2028 | { | |
22c35a8c | 2029 | o->op_ppaddr = PL_ppaddr[type = ++(o->op_type)]; |
eac055e9 | 2030 | } |
85e6fe83 | 2031 | |
22c35a8c | 2032 | if (!(PL_opargs[type] & OA_FOLDCONST)) |
79072805 LW |
2033 | goto nope; |
2034 | ||
de939608 | 2035 | switch (type) { |
7a52d87a GS |
2036 | case OP_NEGATE: |
2037 | /* XXX might want a ck_negate() for this */ | |
2038 | cUNOPo->op_first->op_private &= ~OPpCONST_STRICT; | |
2039 | break; | |
de939608 CS |
2040 | case OP_SPRINTF: |
2041 | case OP_UCFIRST: | |
2042 | case OP_LCFIRST: | |
2043 | case OP_UC: | |
2044 | case OP_LC: | |
69dcf70c MB |
2045 | case OP_SLT: |
2046 | case OP_SGT: | |
2047 | case OP_SLE: | |
2048 | case OP_SGE: | |
2049 | case OP_SCMP: | |
2050 | ||
de939608 CS |
2051 | if (o->op_private & OPpLOCALE) |
2052 | goto nope; | |
2053 | } | |
2054 | ||
3280af22 | 2055 | if (PL_error_count) |
a0d0e21e LW |
2056 | goto nope; /* Don't try to run w/ errors */ |
2057 | ||
79072805 | 2058 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
11fa937b GS |
2059 | if ((curop->op_type != OP_CONST || |
2060 | (curop->op_private & OPpCONST_BARE)) && | |
7a52d87a GS |
2061 | curop->op_type != OP_LIST && |
2062 | curop->op_type != OP_SCALAR && | |
2063 | curop->op_type != OP_NULL && | |
2064 | curop->op_type != OP_PUSHMARK) | |
2065 | { | |
79072805 LW |
2066 | goto nope; |
2067 | } | |
2068 | } | |
2069 | ||
2070 | curop = LINKLIST(o); | |
2071 | o->op_next = 0; | |
533c011a | 2072 | PL_op = curop; |
cea2e8a9 | 2073 | CALLRUNOPS(aTHX); |
3280af22 | 2074 | sv = *(PL_stack_sp--); |
748a9306 | 2075 | if (o->op_targ && sv == PAD_SV(o->op_targ)) /* grab pad temp? */ |
79072805 | 2076 | pad_swipe(o->op_targ); |
748a9306 LW |
2077 | else if (SvTEMP(sv)) { /* grab mortal temp? */ |
2078 | (void)SvREFCNT_inc(sv); | |
2079 | SvTEMP_off(sv); | |
85e6fe83 | 2080 | } |
79072805 LW |
2081 | op_free(o); |
2082 | if (type == OP_RV2GV) | |
b1cb66bf | 2083 | return newGVOP(OP_GV, 0, (GV*)sv); |
748a9306 | 2084 | else { |
ee580363 GS |
2085 | /* try to smush double to int, but don't smush -2.0 to -2 */ |
2086 | if ((SvFLAGS(sv) & (SVf_IOK|SVf_NOK|SVf_POK)) == SVf_NOK && | |
2087 | type != OP_NEGATE) | |
2088 | { | |
748a9306 | 2089 | IV iv = SvIV(sv); |
65202027 | 2090 | if ((NV)iv == SvNV(sv)) { |
748a9306 LW |
2091 | SvREFCNT_dec(sv); |
2092 | sv = newSViv(iv); | |
2093 | } | |
b1cb66bf | 2094 | else |
2095 | SvIOK_off(sv); /* undo SvIV() damage */ | |
748a9306 LW |
2096 | } |
2097 | return newSVOP(OP_CONST, 0, sv); | |
2098 | } | |
aeea060c | 2099 | |
79072805 | 2100 | nope: |
22c35a8c | 2101 | if (!(PL_opargs[type] & OA_OTHERINT)) |
79072805 | 2102 | return o; |
79072805 | 2103 | |
3280af22 | 2104 | if (!(PL_hints & HINT_INTEGER)) { |
a0d0e21e | 2105 | if (type == OP_DIVIDE || !(o->op_flags & OPf_KIDS)) |
85e6fe83 LW |
2106 | return o; |
2107 | ||
2108 | for (curop = ((UNOP*)o)->op_first; curop; curop = curop->op_sibling) { | |
2109 | if (curop->op_type == OP_CONST) { | |
b1cb66bf | 2110 | if (SvIOK(((SVOP*)curop)->op_sv)) |
85e6fe83 LW |
2111 | continue; |
2112 | return o; | |
2113 | } | |
22c35a8c | 2114 | if (PL_opargs[curop->op_type] & OA_RETINTEGER) |
79072805 LW |
2115 | continue; |
2116 | return o; | |
2117 | } | |
22c35a8c | 2118 | o->op_ppaddr = PL_ppaddr[++(o->op_type)]; |
79072805 LW |
2119 | } |
2120 | ||
79072805 LW |
2121 | return o; |
2122 | } | |
2123 | ||
2124 | OP * | |
864dbfa3 | 2125 | Perl_gen_constant_list(pTHX_ register OP *o) |
79072805 | 2126 | { |
11343788 | 2127 | dTHR; |
79072805 | 2128 | register OP *curop; |
3280af22 | 2129 | I32 oldtmps_floor = PL_tmps_floor; |
79072805 | 2130 | |
a0d0e21e | 2131 | list(o); |
3280af22 | 2132 | if (PL_error_count) |
a0d0e21e LW |
2133 | return o; /* Don't attempt to run with errors */ |
2134 | ||
533c011a | 2135 | PL_op = curop = LINKLIST(o); |
a0d0e21e | 2136 | o->op_next = 0; |
cea2e8a9 GS |
2137 | pp_pushmark(); |
2138 | CALLRUNOPS(aTHX); | |
533c011a | 2139 | PL_op = curop; |
cea2e8a9 | 2140 | pp_anonlist(); |
3280af22 | 2141 | PL_tmps_floor = oldtmps_floor; |
79072805 LW |
2142 | |
2143 | o->op_type = OP_RV2AV; | |
22c35a8c | 2144 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
79072805 | 2145 | curop = ((UNOP*)o)->op_first; |
3280af22 | 2146 | ((UNOP*)o)->op_first = newSVOP(OP_CONST, 0, SvREFCNT_inc(*PL_stack_sp--)); |
79072805 | 2147 | op_free(curop); |
79072805 LW |
2148 | linklist(o); |
2149 | return list(o); | |
2150 | } | |
2151 | ||
2152 | OP * | |
864dbfa3 | 2153 | Perl_convert(pTHX_ I32 type, I32 flags, OP *o) |
79072805 LW |
2154 | { |
2155 | OP *kid; | |
a0d0e21e | 2156 | OP *last = 0; |
79072805 | 2157 | |
11343788 MB |
2158 | if (!o || o->op_type != OP_LIST) |
2159 | o = newLISTOP(OP_LIST, 0, o, Nullop); | |
748a9306 | 2160 | else |
5dc0d613 | 2161 | o->op_flags &= ~OPf_WANT; |
79072805 | 2162 | |
22c35a8c | 2163 | if (!(PL_opargs[type] & OA_MARK)) |
11343788 | 2164 | null(cLISTOPo->op_first); |
8990e307 | 2165 | |
11343788 | 2166 | o->op_type = type; |
22c35a8c | 2167 | o->op_ppaddr = PL_ppaddr[type]; |
11343788 | 2168 | o->op_flags |= flags; |
79072805 | 2169 | |
11343788 MB |
2170 | o = CHECKOP(type, o); |
2171 | if (o->op_type != type) | |
2172 | return o; | |
79072805 | 2173 | |
11343788 | 2174 | if (cLISTOPo->op_children < 7) { |
79072805 | 2175 | /* XXX do we really need to do this if we're done appending?? */ |
11343788 | 2176 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 | 2177 | last = kid; |
11343788 | 2178 | cLISTOPo->op_last = last; /* in case check substituted last arg */ |
79072805 LW |
2179 | } |
2180 | ||
11343788 | 2181 | return fold_constants(o); |
79072805 LW |
2182 | } |
2183 | ||
2184 | /* List constructors */ | |
2185 | ||
2186 | OP * | |
864dbfa3 | 2187 | Perl_append_elem(pTHX_ I32 type, OP *first, OP *last) |
79072805 LW |
2188 | { |
2189 | if (!first) | |
2190 | return last; | |
8990e307 LW |
2191 | |
2192 | if (!last) | |
79072805 | 2193 | return first; |
8990e307 | 2194 | |
a0d0e21e LW |
2195 | if (first->op_type != type || type==OP_LIST && first->op_flags & OPf_PARENS) |
2196 | return newLISTOP(type, 0, first, last); | |
79072805 | 2197 | |
a0d0e21e LW |
2198 | if (first->op_flags & OPf_KIDS) |
2199 | ((LISTOP*)first)->op_last->op_sibling = last; | |
2200 | else { | |
2201 | first->op_flags |= OPf_KIDS; | |
2202 | ((LISTOP*)first)->op_first = last; | |
2203 | } | |
2204 | ((LISTOP*)first)->op_last = last; | |
2205 | ((LISTOP*)first)->op_children++; | |
2206 | return first; | |
79072805 LW |
2207 | } |
2208 | ||
2209 | OP * | |
864dbfa3 | 2210 | Perl_append_list(pTHX_ I32 type, LISTOP *first, LISTOP *last) |
79072805 LW |
2211 | { |
2212 | if (!first) | |
2213 | return (OP*)last; | |
8990e307 LW |
2214 | |
2215 | if (!last) | |
79072805 | 2216 | return (OP*)first; |
8990e307 LW |
2217 | |
2218 | if (first->op_type != type) | |
79072805 | 2219 | return prepend_elem(type, (OP*)first, (OP*)last); |
8990e307 LW |
2220 | |
2221 | if (last->op_type != type) | |
79072805 LW |
2222 | return append_elem(type, (OP*)first, (OP*)last); |
2223 | ||
2224 | first->op_last->op_sibling = last->op_first; | |
2225 | first->op_last = last->op_last; | |
2226 | first->op_children += last->op_children; | |
2227 | if (first->op_children) | |
acb74605 | 2228 | first->op_flags |= OPf_KIDS; |
b7dc083c NIS |
2229 | |
2230 | #ifdef PL_OP_SLAB_ALLOC | |
2231 | #else | |
2232 | Safefree(last); | |
2233 | #endif | |
79072805 LW |
2234 | return (OP*)first; |
2235 | } | |
2236 | ||
2237 | OP * | |
864dbfa3 | 2238 | Perl_prepend_elem(pTHX_ I32 type, OP *first, OP *last) |
79072805 LW |
2239 | { |
2240 | if (!first) | |
2241 | return last; | |
8990e307 LW |
2242 | |
2243 | if (!last) | |
79072805 | 2244 | return first; |
8990e307 LW |
2245 | |
2246 | if (last->op_type == type) { | |
2247 | if (type == OP_LIST) { /* already a PUSHMARK there */ | |
2248 | first->op_sibling = ((LISTOP*)last)->op_first->op_sibling; | |
2249 | ((LISTOP*)last)->op_first->op_sibling = first; | |
2250 | } | |
2251 | else { | |
2252 | if (!(last->op_flags & OPf_KIDS)) { | |
2253 | ((LISTOP*)last)->op_last = first; | |
2254 | last->op_flags |= OPf_KIDS; | |
2255 | } | |
2256 | first->op_sibling = ((LISTOP*)last)->op_first; | |
2257 | ((LISTOP*)last)->op_first = first; | |
79072805 | 2258 | } |
79072805 LW |
2259 | ((LISTOP*)last)->op_children++; |
2260 | return last; | |
2261 | } | |
2262 | ||
2263 | return newLISTOP(type, 0, first, last); | |
2264 | } | |
2265 | ||
2266 | /* Constructors */ | |
2267 | ||
2268 | OP * | |
864dbfa3 | 2269 | Perl_newNULLLIST(pTHX) |
79072805 | 2270 | { |
8990e307 LW |
2271 | return newOP(OP_STUB, 0); |
2272 | } | |
2273 | ||
2274 | OP * | |
864dbfa3 | 2275 | Perl_force_list(pTHX_ OP *o) |
8990e307 | 2276 | { |
11343788 MB |
2277 | if (!o || o->op_type != OP_LIST) |
2278 | o = newLISTOP(OP_LIST, 0, o, Nullop); | |
2279 | null(o); | |
2280 | return o; | |
79072805 LW |
2281 | } |
2282 | ||
2283 | OP * | |
864dbfa3 | 2284 | Perl_newLISTOP(pTHX_ I32 type, I32 flags, OP *first, OP *last) |
79072805 LW |
2285 | { |
2286 | LISTOP *listop; | |
2287 | ||
b7dc083c | 2288 | NewOp(1101, listop, 1, LISTOP); |
79072805 LW |
2289 | |
2290 | listop->op_type = type; | |
22c35a8c | 2291 | listop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2292 | listop->op_children = (first != 0) + (last != 0); |
2293 | listop->op_flags = flags; | |
79072805 LW |
2294 | |
2295 | if (!last && first) | |
2296 | last = first; | |
2297 | else if (!first && last) | |
2298 | first = last; | |
8990e307 LW |
2299 | else if (first) |
2300 | first->op_sibling = last; | |
79072805 LW |
2301 | listop->op_first = first; |
2302 | listop->op_last = last; | |
8990e307 LW |
2303 | if (type == OP_LIST) { |
2304 | OP* pushop; | |
2305 | pushop = newOP(OP_PUSHMARK, 0); | |
2306 | pushop->op_sibling = first; | |
2307 | listop->op_first = pushop; | |
2308 | listop->op_flags |= OPf_KIDS; | |
2309 | if (!last) | |
2310 | listop->op_last = pushop; | |
2311 | } | |
2312 | else if (listop->op_children) | |
2313 | listop->op_flags |= OPf_KIDS; | |
79072805 LW |
2314 | |
2315 | return (OP*)listop; | |
2316 | } | |
2317 | ||
2318 | OP * | |
864dbfa3 | 2319 | Perl_newOP(pTHX_ I32 type, I32 flags) |
79072805 | 2320 | { |
11343788 | 2321 | OP *o; |
b7dc083c | 2322 | NewOp(1101, o, 1, OP); |
11343788 | 2323 | o->op_type = type; |
22c35a8c | 2324 | o->op_ppaddr = PL_ppaddr[type]; |
11343788 | 2325 | o->op_flags = flags; |
79072805 | 2326 | |
11343788 MB |
2327 | o->op_next = o; |
2328 | o->op_private = 0 + (flags >> 8); | |
22c35a8c | 2329 | if (PL_opargs[type] & OA_RETSCALAR) |
11343788 | 2330 | scalar(o); |
22c35a8c | 2331 | if (PL_opargs[type] & OA_TARGET) |
11343788 MB |
2332 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
2333 | return CHECKOP(type, o); | |
79072805 LW |
2334 | } |
2335 | ||
2336 | OP * | |
864dbfa3 | 2337 | Perl_newUNOP(pTHX_ I32 type, I32 flags, OP *first) |
79072805 LW |
2338 | { |
2339 | UNOP *unop; | |
2340 | ||
93a17b20 | 2341 | if (!first) |
aeea060c | 2342 | first = newOP(OP_STUB, 0); |
22c35a8c | 2343 | if (PL_opargs[type] & OA_MARK) |
8990e307 | 2344 | first = force_list(first); |
93a17b20 | 2345 | |
b7dc083c | 2346 | NewOp(1101, unop, 1, UNOP); |
79072805 | 2347 | unop->op_type = type; |
22c35a8c | 2348 | unop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2349 | unop->op_first = first; |
2350 | unop->op_flags = flags | OPf_KIDS; | |
c07a80fd | 2351 | unop->op_private = 1 | (flags >> 8); |
e50aee73 | 2352 | unop = (UNOP*) CHECKOP(type, unop); |
79072805 LW |
2353 | if (unop->op_next) |
2354 | return (OP*)unop; | |
2355 | ||
a0d0e21e | 2356 | return fold_constants((OP *) unop); |
79072805 LW |
2357 | } |
2358 | ||
2359 | OP * | |
864dbfa3 | 2360 | Perl_newBINOP(pTHX_ I32 type, I32 flags, OP *first, OP *last) |
79072805 LW |
2361 | { |
2362 | BINOP *binop; | |
b7dc083c | 2363 | NewOp(1101, binop, 1, BINOP); |
79072805 LW |
2364 | |
2365 | if (!first) | |
2366 | first = newOP(OP_NULL, 0); | |
2367 | ||
2368 | binop->op_type = type; | |
22c35a8c | 2369 | binop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2370 | binop->op_first = first; |
2371 | binop->op_flags = flags | OPf_KIDS; | |
2372 | if (!last) { | |
2373 | last = first; | |
c07a80fd | 2374 | binop->op_private = 1 | (flags >> 8); |
79072805 LW |
2375 | } |
2376 | else { | |
c07a80fd | 2377 | binop->op_private = 2 | (flags >> 8); |
79072805 LW |
2378 | first->op_sibling = last; |
2379 | } | |
2380 | ||
e50aee73 | 2381 | binop = (BINOP*)CHECKOP(type, binop); |
b162f9ea | 2382 | if (binop->op_next || binop->op_type != type) |
79072805 LW |
2383 | return (OP*)binop; |
2384 | ||
7284ab6f | 2385 | binop->op_last = binop->op_first->op_sibling; |
79072805 | 2386 | |
a0d0e21e | 2387 | return fold_constants((OP *)binop); |
79072805 LW |
2388 | } |
2389 | ||
a0ed51b3 LW |
2390 | static int |
2391 | utf8compare(const void *a, const void *b) | |
2392 | { | |
2393 | int i; | |
2394 | for (i = 0; i < 10; i++) { | |
2395 | if ((*(U8**)a)[i] < (*(U8**)b)[i]) | |
2396 | return -1; | |
2397 | if ((*(U8**)a)[i] > (*(U8**)b)[i]) | |
2398 | return 1; | |
2399 | } | |
2400 | return 0; | |
2401 | } | |
2402 | ||
79072805 | 2403 | OP * |
864dbfa3 | 2404 | Perl_pmtrans(pTHX_ OP *o, OP *expr, OP *repl) |
79072805 | 2405 | { |
79072805 LW |
2406 | SV *tstr = ((SVOP*)expr)->op_sv; |
2407 | SV *rstr = ((SVOP*)repl)->op_sv; | |
463ee0b2 LW |
2408 | STRLEN tlen; |
2409 | STRLEN rlen; | |
ec49126f | 2410 | register U8 *t = (U8*)SvPV(tstr, tlen); |
2411 | register U8 *r = (U8*)SvPV(rstr, rlen); | |
79072805 LW |
2412 | register I32 i; |
2413 | register I32 j; | |
a0ed51b3 | 2414 | I32 del; |
79072805 | 2415 | I32 complement; |
5d06d08e | 2416 | I32 squash; |
79072805 LW |
2417 | register short *tbl; |
2418 | ||
11343788 | 2419 | complement = o->op_private & OPpTRANS_COMPLEMENT; |
a0ed51b3 | 2420 | del = o->op_private & OPpTRANS_DELETE; |
5d06d08e | 2421 | squash = o->op_private & OPpTRANS_SQUASH; |
79072805 | 2422 | |
a0ed51b3 | 2423 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { |
79cb57f6 | 2424 | SV* listsv = newSVpvn("# comment\n",10); |
a0ed51b3 LW |
2425 | SV* transv = 0; |
2426 | U8* tend = t + tlen; | |
2427 | U8* rend = r + rlen; | |
2428 | I32 ulen; | |
2429 | U32 tfirst = 1; | |
2430 | U32 tlast = 0; | |
2431 | I32 tdiff; | |
2432 | U32 rfirst = 1; | |
2433 | U32 rlast = 0; | |
2434 | I32 rdiff; | |
2435 | I32 diff; | |
2436 | I32 none = 0; | |
2437 | U32 max = 0; | |
2438 | I32 bits; | |
2439 | I32 grows = 0; | |
2440 | I32 havefinal = 0; | |
2441 | U32 final; | |
2442 | HV *hv; | |
2443 | I32 from_utf = o->op_private & OPpTRANS_FROM_UTF; | |
2444 | I32 to_utf = o->op_private & OPpTRANS_TO_UTF; | |
2445 | ||
2446 | if (complement) { | |
2447 | U8 tmpbuf[10]; | |
2448 | U8** cp; | |
2449 | UV nextmin = 0; | |
2450 | New(1109, cp, tlen, U8*); | |
2451 | i = 0; | |
79cb57f6 | 2452 | transv = newSVpvn("",0); |
a0ed51b3 LW |
2453 | while (t < tend) { |
2454 | cp[i++] = t; | |
2455 | t += UTF8SKIP(t); | |
2456 | if (*t == 0xff) { | |
2457 | t++; | |
2458 | t += UTF8SKIP(t); | |
2459 | } | |
2460 | } | |
2461 | qsort(cp, i, sizeof(U8*), utf8compare); | |
2462 | for (j = 0; j < i; j++) { | |
2463 | U8 *s = cp[j]; | |
2464 | UV val = utf8_to_uv(s, &ulen); | |
2465 | s += ulen; | |
2466 | diff = val - nextmin; | |
2467 | if (diff > 0) { | |
2468 | t = uv_to_utf8(tmpbuf,nextmin); | |
dfe13c55 | 2469 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 LW |
2470 | if (diff > 1) { |
2471 | t = uv_to_utf8(tmpbuf, val - 1); | |
2472 | sv_catpvn(transv, "\377", 1); | |
dfe13c55 | 2473 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 LW |
2474 | } |
2475 | } | |
2476 | if (*s == 0xff) | |
2477 | val = utf8_to_uv(s+1, &ulen); | |
2478 | if (val >= nextmin) | |
2479 | nextmin = val + 1; | |
2480 | } | |
2481 | t = uv_to_utf8(tmpbuf,nextmin); | |
dfe13c55 | 2482 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 LW |
2483 | t = uv_to_utf8(tmpbuf, 0x7fffffff); |
2484 | sv_catpvn(transv, "\377", 1); | |
dfe13c55 GS |
2485 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
2486 | t = (U8*)SvPVX(transv); | |
a0ed51b3 LW |
2487 | tlen = SvCUR(transv); |
2488 | tend = t + tlen; | |
2489 | } | |
2490 | else if (!rlen && !del) { | |
2491 | r = t; rlen = tlen; rend = tend; | |
4757a243 LW |
2492 | } |
2493 | if (!squash) { | |
2494 | if (to_utf && from_utf) { /* only counting characters */ | |
2495 | if (t == r || (tlen == rlen && memEQ(t, r, tlen))) | |
2496 | o->op_private |= OPpTRANS_IDENTICAL; | |
2497 | } | |
2498 | else { /* straight latin-1 translation */ | |
2499 | if (tlen == 4 && memEQ(t, "\0\377\303\277", 4) && | |
2500 | rlen == 4 && memEQ(r, "\0\377\303\277", 4)) | |
2501 | o->op_private |= OPpTRANS_IDENTICAL; | |
2502 | } | |
a0ed51b3 LW |
2503 | } |
2504 | ||
2505 | while (t < tend || tfirst <= tlast) { | |
2506 | /* see if we need more "t" chars */ | |
2507 | if (tfirst > tlast) { | |
2508 | tfirst = (I32)utf8_to_uv(t, &ulen); | |
2509 | t += ulen; | |
2510 | if (t < tend && *t == 0xff) { /* illegal utf8 val indicates range */ | |
2511 | tlast = (I32)utf8_to_uv(++t, &ulen); | |
2512 | t += ulen; | |
2513 | } | |
2514 | else | |
2515 | tlast = tfirst; | |
2516 | } | |
2517 | ||
2518 | /* now see if we need more "r" chars */ | |
2519 | if (rfirst > rlast) { | |
2520 | if (r < rend) { | |
2521 | rfirst = (I32)utf8_to_uv(r, &ulen); | |
2522 | r += ulen; | |
2523 | if (r < rend && *r == 0xff) { /* illegal utf8 val indicates range */ | |
2524 | rlast = (I32)utf8_to_uv(++r, &ulen); | |
2525 | r += ulen; | |
2526 | } | |
2527 | else | |
2528 | rlast = rfirst; | |
2529 | } | |
2530 | else { | |
2531 | if (!havefinal++) | |
2532 | final = rlast; | |
2533 | rfirst = rlast = 0xffffffff; | |
2534 | } | |
2535 | } | |
2536 | ||
2537 | /* now see which range will peter our first, if either. */ | |
2538 | tdiff = tlast - tfirst; | |
2539 | rdiff = rlast - rfirst; | |
2540 | ||
2541 | if (tdiff <= rdiff) | |
2542 | diff = tdiff; | |
2543 | else | |
2544 | diff = rdiff; | |
2545 | ||
2546 | if (rfirst == 0xffffffff) { | |
2547 | diff = tdiff; /* oops, pretend rdiff is infinite */ | |
2548 | if (diff > 0) | |
cea2e8a9 | 2549 | Perl_sv_catpvf(aTHX_ listsv, "%04x\t%04x\tXXXX\n", tfirst, tlast); |
a0ed51b3 | 2550 | else |
cea2e8a9 | 2551 | Perl_sv_catpvf(aTHX_ listsv, "%04x\t\tXXXX\n", tfirst); |
a0ed51b3 LW |
2552 | } |
2553 | else { | |
2554 | if (diff > 0) | |
cea2e8a9 | 2555 | Perl_sv_catpvf(aTHX_ listsv, "%04x\t%04x\t%04x\n", tfirst, tfirst + diff, rfirst); |
a0ed51b3 | 2556 | else |
cea2e8a9 | 2557 | Perl_sv_catpvf(aTHX_ listsv, "%04x\t\t%04x\n", tfirst, rfirst); |
a0ed51b3 LW |
2558 | |
2559 | if (rfirst + diff > max) | |
2560 | max = rfirst + diff; | |
2561 | rfirst += diff + 1; | |
2562 | if (!grows) { | |
2563 | if (rfirst <= 0x80) | |
2564 | ; | |
2565 | else if (rfirst <= 0x800) | |
2566 | grows |= (tfirst < 0x80); | |
2567 | else if (rfirst <= 0x10000) | |
2568 | grows |= (tfirst < 0x800); | |
2569 | else if (rfirst <= 0x200000) | |
2570 | grows |= (tfirst < 0x10000); | |
2571 | else if (rfirst <= 0x4000000) | |
2572 | grows |= (tfirst < 0x200000); | |
2573 | else if (rfirst <= 0x80000000) | |
2574 | grows |= (tfirst < 0x4000000); | |
2575 | } | |
2576 | } | |
2577 | tfirst += diff + 1; | |
2578 | } | |
2579 | ||
2580 | none = ++max; | |
2581 | if (del) | |
2582 | del = ++max; | |
2583 | ||
2584 | if (max > 0xffff) | |
2585 | bits = 32; | |
2586 | else if (max > 0xff) | |
2587 | bits = 16; | |
2588 | else | |
2589 | bits = 8; | |
2590 | ||
2591 | cSVOPo->op_sv = (SV*)swash_init("utf8", "", listsv, bits, none); | |
2592 | SvREFCNT_dec(listsv); | |
2593 | if (transv) | |
2594 | SvREFCNT_dec(transv); | |
2595 | ||
2596 | if (!del && havefinal) | |
2597 | (void)hv_store((HV*)SvRV((cSVOPo->op_sv)), "FINAL", 5, newSViv((IV)final), 0); | |
2598 | ||
2599 | if (grows && to_utf) | |
2600 | o->op_private |= OPpTRANS_GROWS; | |
2601 | ||
2602 | op_free(expr); | |
2603 | op_free(repl); | |
2604 | return o; | |
2605 | } | |
2606 | ||
2607 | tbl = (short*)cPVOPo->op_pv; | |
79072805 LW |
2608 | if (complement) { |
2609 | Zero(tbl, 256, short); | |
2610 | for (i = 0; i < tlen; i++) | |
ec49126f | 2611 | tbl[t[i]] = -1; |
79072805 LW |
2612 | for (i = 0, j = 0; i < 256; i++) { |
2613 | if (!tbl[i]) { | |
2614 | if (j >= rlen) { | |
a0ed51b3 | 2615 | if (del) |
79072805 LW |
2616 | tbl[i] = -2; |
2617 | else if (rlen) | |
ec49126f | 2618 | tbl[i] = r[j-1]; |
79072805 LW |
2619 | else |
2620 | tbl[i] = i; | |
2621 | } | |
2622 | else | |
ec49126f | 2623 | tbl[i] = r[j++]; |
79072805 LW |
2624 | } |
2625 | } | |
2626 | } | |
2627 | else { | |
a0ed51b3 | 2628 | if (!rlen && !del) { |
79072805 | 2629 | r = t; rlen = tlen; |
5d06d08e | 2630 | if (!squash) |
4757a243 | 2631 | o->op_private |= OPpTRANS_IDENTICAL; |
79072805 LW |
2632 | } |
2633 | for (i = 0; i < 256; i++) | |
2634 | tbl[i] = -1; | |
2635 | for (i = 0, j = 0; i < tlen; i++,j++) { | |
2636 | if (j >= rlen) { | |
a0ed51b3 | 2637 | if (del) { |
ec49126f | 2638 | if (tbl[t[i]] == -1) |
2639 | tbl[t[i]] = -2; | |
79072805 LW |
2640 | continue; |
2641 | } | |
2642 | --j; | |
2643 | } | |
ec49126f | 2644 | if (tbl[t[i]] == -1) |
2645 | tbl[t[i]] = r[j]; | |
79072805 LW |
2646 | } |
2647 | } | |
2648 | op_free(expr); | |
2649 | op_free(repl); | |
2650 | ||
11343788 | 2651 | return o; |
79072805 LW |
2652 | } |
2653 | ||
2654 | OP * | |
864dbfa3 | 2655 | Perl_newPMOP(pTHX_ I32 type, I32 flags) |
79072805 | 2656 | { |
11343788 | 2657 | dTHR; |
79072805 LW |
2658 | PMOP *pmop; |
2659 | ||
b7dc083c | 2660 | NewOp(1101, pmop, 1, PMOP); |
79072805 | 2661 | pmop->op_type = type; |
22c35a8c | 2662 | pmop->op_ppaddr = PL_ppaddr[type]; |
79072805 | 2663 | pmop->op_flags = flags; |
c07a80fd | 2664 | pmop->op_private = 0 | (flags >> 8); |
79072805 | 2665 | |
3280af22 | 2666 | if (PL_hints & HINT_RE_TAINT) |
b3eb6a9b | 2667 | pmop->op_pmpermflags |= PMf_RETAINT; |
3280af22 | 2668 | if (PL_hints & HINT_LOCALE) |
b3eb6a9b GS |
2669 | pmop->op_pmpermflags |= PMf_LOCALE; |
2670 | pmop->op_pmflags = pmop->op_pmpermflags; | |
36477c24 | 2671 | |
79072805 | 2672 | /* link into pm list */ |
3280af22 NIS |
2673 | if (type != OP_TRANS && PL_curstash) { |
2674 | pmop->op_pmnext = HvPMROOT(PL_curstash); | |
2675 | HvPMROOT(PL_curstash) = pmop; | |
79072805 LW |
2676 | } |
2677 | ||
2678 | return (OP*)pmop; | |
2679 | } | |
2680 | ||
2681 | OP * | |
864dbfa3 | 2682 | Perl_pmruntime(pTHX_ OP *o, OP *expr, OP *repl) |
79072805 | 2683 | { |
5c0ca799 | 2684 | dTHR; |
79072805 LW |
2685 | PMOP *pm; |
2686 | LOGOP *rcop; | |
ce862d02 | 2687 | I32 repl_has_vars = 0; |
79072805 | 2688 | |
11343788 MB |
2689 | if (o->op_type == OP_TRANS) |
2690 | return pmtrans(o, expr, repl); | |
79072805 | 2691 | |
3280af22 | 2692 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 2693 | pm = (PMOP*)o; |
79072805 LW |
2694 | |
2695 | if (expr->op_type == OP_CONST) { | |
463ee0b2 | 2696 | STRLEN plen; |
79072805 | 2697 | SV *pat = ((SVOP*)expr)->op_sv; |
463ee0b2 | 2698 | char *p = SvPV(pat, plen); |
11343788 | 2699 | if ((o->op_flags & OPf_SPECIAL) && strEQ(p, " ")) { |
93a17b20 | 2700 | sv_setpvn(pat, "\\s+", 3); |
463ee0b2 | 2701 | p = SvPV(pat, plen); |
79072805 LW |
2702 | pm->op_pmflags |= PMf_SKIPWHITE; |
2703 | } | |
cea2e8a9 | 2704 | pm->op_pmregexp = CALLREGCOMP(aTHX_ p, p + plen, pm); |
aeea060c | 2705 | if (strEQ("\\s+", pm->op_pmregexp->precomp)) |
85e6fe83 | 2706 | pm->op_pmflags |= PMf_WHITE; |
79072805 LW |
2707 | op_free(expr); |
2708 | } | |
2709 | else { | |
3280af22 NIS |
2710 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) |
2711 | expr = newUNOP((!(PL_hints & HINT_RE_EVAL) | |
2cd61cdb IZ |
2712 | ? OP_REGCRESET |
2713 | : OP_REGCMAYBE),0,expr); | |
463ee0b2 | 2714 | |
b7dc083c | 2715 | NewOp(1101, rcop, 1, LOGOP); |
79072805 | 2716 | rcop->op_type = OP_REGCOMP; |
22c35a8c | 2717 | rcop->op_ppaddr = PL_ppaddr[OP_REGCOMP]; |
79072805 | 2718 | rcop->op_first = scalar(expr); |
3280af22 | 2719 | rcop->op_flags |= ((PL_hints & HINT_RE_EVAL) |
2cd61cdb IZ |
2720 | ? (OPf_SPECIAL | OPf_KIDS) |
2721 | : OPf_KIDS); | |
79072805 | 2722 | rcop->op_private = 1; |
11343788 | 2723 | rcop->op_other = o; |
79072805 LW |
2724 | |
2725 | /* establish postfix order */ | |
3280af22 | 2726 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) { |
463ee0b2 LW |
2727 | LINKLIST(expr); |
2728 | rcop->op_next = expr; | |
2729 | ((UNOP*)expr)->op_first->op_next = (OP*)rcop; | |
2730 | } | |
2731 | else { | |
2732 | rcop->op_next = LINKLIST(expr); | |
2733 | expr->op_next = (OP*)rcop; | |
2734 | } | |
79072805 | 2735 | |
11343788 | 2736 | prepend_elem(o->op_type, scalar((OP*)rcop), o); |
79072805 LW |
2737 | } |
2738 | ||
2739 | if (repl) { | |
748a9306 | 2740 | OP *curop; |
0244c3a4 | 2741 | if (pm->op_pmflags & PMf_EVAL) { |
748a9306 | 2742 | curop = 0; |
0244c3a4 GS |
2743 | if (PL_curcop->cop_line < PL_multi_end) |
2744 | PL_curcop->cop_line = PL_multi_end; | |
2745 | } | |
554b3eca | 2746 | #ifdef USE_THREADS |
2faa37cc | 2747 | else if (repl->op_type == OP_THREADSV |
554b3eca | 2748 | && strchr("&`'123456789+", |
533c011a | 2749 | PL_threadsv_names[repl->op_targ])) |
554b3eca MB |
2750 | { |
2751 | curop = 0; | |
2752 | } | |
2753 | #endif /* USE_THREADS */ | |
748a9306 LW |
2754 | else if (repl->op_type == OP_CONST) |
2755 | curop = repl; | |
79072805 | 2756 | else { |
79072805 LW |
2757 | OP *lastop = 0; |
2758 | for (curop = LINKLIST(repl); curop!=repl; curop = LINKLIST(curop)) { | |
22c35a8c | 2759 | if (PL_opargs[curop->op_type] & OA_DANGEROUS) { |
554b3eca | 2760 | #ifdef USE_THREADS |
ce862d02 IZ |
2761 | if (curop->op_type == OP_THREADSV) { |
2762 | repl_has_vars = 1; | |
be949f6f | 2763 | if (strchr("&`'123456789+", curop->op_private)) |
ce862d02 | 2764 | break; |
554b3eca MB |
2765 | } |
2766 | #else | |
79072805 LW |
2767 | if (curop->op_type == OP_GV) { |
2768 | GV *gv = ((GVOP*)curop)->op_gv; | |
ce862d02 | 2769 | repl_has_vars = 1; |
93a17b20 | 2770 | if (strchr("&`'123456789+", *GvENAME(gv))) |
79072805 LW |
2771 | break; |
2772 | } | |
554b3eca | 2773 | #endif /* USE_THREADS */ |
79072805 LW |
2774 | else if (curop->op_type == OP_RV2CV) |
2775 | break; | |
2776 | else if (curop->op_type == OP_RV2SV || | |
2777 | curop->op_type == OP_RV2AV || | |
2778 | curop->op_type == OP_RV2HV || | |
2779 | curop->op_type == OP_RV2GV) { | |
2780 | if (lastop && lastop->op_type != OP_GV) /*funny deref?*/ | |
2781 | break; | |
2782 | } | |
748a9306 LW |
2783 | else if (curop->op_type == OP_PADSV || |
2784 | curop->op_type == OP_PADAV || | |
2785 | curop->op_type == OP_PADHV || | |
554b3eca | 2786 | curop->op_type == OP_PADANY) { |
ce862d02 | 2787 | repl_has_vars = 1; |
748a9306 | 2788 | } |
1167e5da SM |
2789 | else if (curop->op_type == OP_PUSHRE) |
2790 | ; /* Okay here, dangerous in newASSIGNOP */ | |
79072805 LW |
2791 | else |
2792 | break; | |
2793 | } | |
2794 | lastop = curop; | |
2795 | } | |
748a9306 | 2796 | } |
ce862d02 IZ |
2797 | if (curop == repl |
2798 | && !(repl_has_vars | |
2799 | && (!pm->op_pmregexp | |
2800 | || pm->op_pmregexp->reganch & ROPT_EVAL_SEEN))) { | |
748a9306 | 2801 | pm->op_pmflags |= PMf_CONST; /* const for long enough */ |
4633a7c4 | 2802 | pm->op_pmpermflags |= PMf_CONST; /* const for long enough */ |
11343788 | 2803 | prepend_elem(o->op_type, scalar(repl), o); |
748a9306 LW |
2804 | } |
2805 | else { | |
ce862d02 IZ |
2806 | if (curop == repl && !pm->op_pmregexp) { /* Has variables. */ |
2807 | pm->op_pmflags |= PMf_MAYBE_CONST; | |
2808 | pm->op_pmpermflags |= PMf_MAYBE_CONST; | |
2809 | } | |
b7dc083c | 2810 | NewOp(1101, rcop, 1, LOGOP); |
748a9306 | 2811 | rcop->op_type = OP_SUBSTCONT; |
22c35a8c | 2812 | rcop->op_ppaddr = PL_ppaddr[OP_SUBSTCONT]; |
748a9306 LW |
2813 | rcop->op_first = scalar(repl); |
2814 | rcop->op_flags |= OPf_KIDS; | |
2815 | rcop->op_private = 1; | |
11343788 | 2816 | rcop->op_other = o; |
748a9306 LW |
2817 | |
2818 | /* establish postfix order */ | |
2819 | rcop->op_next = LINKLIST(repl); | |
2820 | repl->op_next = (OP*)rcop; | |
2821 | ||
2822 | pm->op_pmreplroot = scalar((OP*)rcop); | |
2823 | pm->op_pmreplstart = LINKLIST(rcop); | |
2824 | rcop->op_next = 0; | |
79072805 LW |
2825 | } |
2826 | } | |
2827 | ||
2828 | return (OP*)pm; | |
2829 | } | |
2830 | ||
2831 | OP * | |
864dbfa3 | 2832 | Perl_newSVOP(pTHX_ I32 type, I32 flags, SV *sv) |
79072805 LW |
2833 | { |
2834 | SVOP *svop; | |
b7dc083c | 2835 | NewOp(1101, svop, 1, SVOP); |
79072805 | 2836 | svop->op_type = type; |
22c35a8c | 2837 | svop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2838 | svop->op_sv = sv; |
2839 | svop->op_next = (OP*)svop; | |
2840 | svop->op_flags = flags; | |
22c35a8c | 2841 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 2842 | scalar((OP*)svop); |
22c35a8c | 2843 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 2844 | svop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2845 | return CHECKOP(type, svop); |
79072805 LW |
2846 | } |
2847 | ||
2848 | OP * | |
864dbfa3 | 2849 | Perl_newGVOP(pTHX_ I32 type, I32 flags, GV *gv) |
79072805 | 2850 | { |
11343788 | 2851 | dTHR; |
79072805 | 2852 | GVOP *gvop; |
b7dc083c | 2853 | NewOp(1101, gvop, 1, GVOP); |
79072805 | 2854 | gvop->op_type = type; |
22c35a8c | 2855 | gvop->op_ppaddr = PL_ppaddr[type]; |
8990e307 | 2856 | gvop->op_gv = (GV*)SvREFCNT_inc(gv); |
79072805 LW |
2857 | gvop->op_next = (OP*)gvop; |
2858 | gvop->op_flags = flags; | |
22c35a8c | 2859 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 2860 | scalar((OP*)gvop); |
22c35a8c | 2861 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 2862 | gvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2863 | return CHECKOP(type, gvop); |
79072805 LW |
2864 | } |
2865 | ||
2866 | OP * | |
864dbfa3 | 2867 | Perl_newPVOP(pTHX_ I32 type, I32 flags, char *pv) |
79072805 LW |
2868 | { |
2869 | PVOP *pvop; | |
b7dc083c | 2870 | NewOp(1101, pvop, 1, PVOP); |
79072805 | 2871 | pvop->op_type = type; |
22c35a8c | 2872 | pvop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2873 | pvop->op_pv = pv; |
2874 | pvop->op_next = (OP*)pvop; | |
2875 | pvop->op_flags = flags; | |
22c35a8c | 2876 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 2877 | scalar((OP*)pvop); |
22c35a8c | 2878 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 2879 | pvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2880 | return CHECKOP(type, pvop); |
79072805 LW |
2881 | } |
2882 | ||
79072805 | 2883 | void |
864dbfa3 | 2884 | Perl_package(pTHX_ OP *o) |
79072805 | 2885 | { |
11343788 | 2886 | dTHR; |
93a17b20 | 2887 | SV *sv; |
79072805 | 2888 | |
3280af22 NIS |
2889 | save_hptr(&PL_curstash); |
2890 | save_item(PL_curstname); | |
11343788 | 2891 | if (o) { |
463ee0b2 LW |
2892 | STRLEN len; |
2893 | char *name; | |
11343788 | 2894 | sv = cSVOPo->op_sv; |
463ee0b2 | 2895 | name = SvPV(sv, len); |
3280af22 NIS |
2896 | PL_curstash = gv_stashpvn(name,len,TRUE); |
2897 | sv_setpvn(PL_curstname, name, len); | |
11343788 | 2898 | op_free(o); |
93a17b20 LW |
2899 | } |
2900 | else { | |
3280af22 NIS |
2901 | sv_setpv(PL_curstname,"<none>"); |
2902 | PL_curstash = Nullhv; | |
93a17b20 | 2903 | } |
7ad382f4 | 2904 | PL_hints |= HINT_BLOCK_SCOPE; |
3280af22 NIS |
2905 | PL_copline = NOLINE; |
2906 | PL_expect = XSTATE; | |
79072805 LW |
2907 | } |
2908 | ||
85e6fe83 | 2909 | void |
864dbfa3 | 2910 | Perl_utilize(pTHX_ int aver, I32 floor, OP *version, OP *id, OP *arg) |
85e6fe83 | 2911 | { |
a0d0e21e LW |
2912 | OP *pack; |
2913 | OP *meth; | |
2914 | OP *rqop; | |
2915 | OP *imop; | |
b1cb66bf | 2916 | OP *veop; |
78ca652e | 2917 | GV *gv; |
85e6fe83 | 2918 | |
a0d0e21e | 2919 | if (id->op_type != OP_CONST) |
cea2e8a9 | 2920 | Perl_croak(aTHX_ "Module name must be constant"); |
85e6fe83 | 2921 | |
b1cb66bf | 2922 | veop = Nullop; |
2923 | ||
2924 | if(version != Nullop) { | |
2925 | SV *vesv = ((SVOP*)version)->op_sv; | |
2926 | ||
2927 | if (arg == Nullop && !SvNIOK(vesv)) { | |
2928 | arg = version; | |
2929 | } | |
2930 | else { | |
2931 | OP *pack; | |
b1cb66bf | 2932 | |
2933 | if (version->op_type != OP_CONST || !SvNIOK(vesv)) | |
cea2e8a9 | 2934 | Perl_croak(aTHX_ "Version number must be constant number"); |
b1cb66bf | 2935 | |
2936 | /* Make copy of id so we don't free it twice */ | |
2937 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); | |
2938 | ||
2939 | /* Fake up a method call to VERSION */ | |
b1cb66bf | 2940 | veop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, |
2941 | append_elem(OP_LIST, | |
2942 | prepend_elem(OP_LIST, pack, list(version)), | |
f5d5a27c CS |
2943 | newSVOP(OP_METHOD_NAMED, 0, |
2944 | newSVpvn("VERSION", 7)))); | |
b1cb66bf | 2945 | } |
2946 | } | |
aeea060c | 2947 | |
a0d0e21e | 2948 | /* Fake up an import/unimport */ |
4633a7c4 LW |
2949 | if (arg && arg->op_type == OP_STUB) |
2950 | imop = arg; /* no import on explicit () */ | |
b1cb66bf | 2951 | else if(SvNIOK(((SVOP*)id)->op_sv)) { |
2952 | imop = Nullop; /* use 5.0; */ | |
2953 | } | |
4633a7c4 LW |
2954 | else { |
2955 | /* Make copy of id so we don't free it twice */ | |
2956 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); | |
4633a7c4 | 2957 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, |
a0d0e21e LW |
2958 | append_elem(OP_LIST, |
2959 | prepend_elem(OP_LIST, pack, list(arg)), | |
f5d5a27c CS |
2960 | newSVOP(OP_METHOD_NAMED, 0, |
2961 | aver ? newSVpvn("import", 6) | |
2962 | : newSVpvn("unimport", 8)))); | |
4633a7c4 LW |
2963 | } |
2964 | ||
78ca652e GS |
2965 | /* Fake up a require, handle override, if any */ |
2966 | gv = gv_fetchpv("require", FALSE, SVt_PVCV); | |
2967 | if (!(gv && GvIMPORTED_CV(gv))) | |
2968 | gv = gv_fetchpv("CORE::GLOBAL::require", FALSE, SVt_PVCV); | |
2969 | ||
2970 | if (gv && GvIMPORTED_CV(gv)) { | |
2971 | rqop = ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, | |
2972 | append_elem(OP_LIST, id, | |
2973 | scalar(newUNOP(OP_RV2CV, 0, | |
2974 | newGVOP(OP_GV, 0, | |
2975 | gv)))))); | |
2976 | } | |
2977 | else { | |
2978 | rqop = newUNOP(OP_REQUIRE, 0, id); | |
2979 | } | |
a0d0e21e LW |
2980 | |
2981 | /* Fake up the BEGIN {}, which does its thing immediately. */ | |
09bef843 | 2982 | newATTRSUB(floor, |
79cb57f6 | 2983 | newSVOP(OP_CONST, 0, newSVpvn("BEGIN", 5)), |
4633a7c4 | 2984 | Nullop, |
09bef843 | 2985 | Nullop, |
a0d0e21e | 2986 | append_elem(OP_LINESEQ, |
b1cb66bf | 2987 | append_elem(OP_LINESEQ, |
2988 | newSTATEOP(0, Nullch, rqop), | |
2989 | newSTATEOP(0, Nullch, veop)), | |
a0d0e21e | 2990 | newSTATEOP(0, Nullch, imop) )); |
85e6fe83 | 2991 | |
3280af22 NIS |
2992 | PL_copline = NOLINE; |
2993 | PL_expect = XSTATE; | |
85e6fe83 LW |
2994 | } |
2995 | ||
79072805 | 2996 | OP * |
864dbfa3 | 2997 | Perl_dofile(pTHX_ OP *term) |
78ca652e GS |
2998 | { |
2999 | OP *doop; | |
3000 | GV *gv; | |
3001 | ||
3002 | gv = gv_fetchpv("do", FALSE, SVt_PVCV); | |
3003 | if (!(gv && GvIMPORTED_CV(gv))) | |
3004 | gv = gv_fetchpv("CORE::GLOBAL::do", FALSE, SVt_PVCV); | |
3005 | ||
3006 | if (gv && GvIMPORTED_CV(gv)) { | |
3007 | doop = ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, | |
3008 | append_elem(OP_LIST, term, | |
3009 | scalar(newUNOP(OP_RV2CV, 0, | |
3010 | newGVOP(OP_GV, 0, | |
3011 | gv)))))); | |
3012 | } | |
3013 | else { | |
3014 | doop = newUNOP(OP_DOFILE, 0, scalar(term)); | |
3015 | } | |
3016 | return doop; | |
3017 | } | |
3018 | ||
3019 | OP * | |
864dbfa3 | 3020 | Perl_newSLICEOP(pTHX_ I32 flags, OP *subscript, OP *listval) |
79072805 LW |
3021 | { |
3022 | return newBINOP(OP_LSLICE, flags, | |
8990e307 LW |
3023 | list(force_list(subscript)), |
3024 | list(force_list(listval)) ); | |
79072805 LW |
3025 | } |
3026 | ||
76e3520e | 3027 | STATIC I32 |
cea2e8a9 | 3028 | S_list_assignment(pTHX_ register OP *o) |
79072805 | 3029 | { |
11343788 | 3030 | if (!o) |
79072805 LW |
3031 | return TRUE; |
3032 | ||
11343788 MB |
3033 | if (o->op_type == OP_NULL && o->op_flags & OPf_KIDS) |
3034 | o = cUNOPo->op_first; | |
79072805 | 3035 | |
11343788 | 3036 | if (o->op_type == OP_COND_EXPR) { |
1a67a97c SM |
3037 | I32 t = list_assignment(cLOGOPo->op_first->op_sibling); |
3038 | I32 f = list_assignment(cLOGOPo->op_first->op_sibling->op_sibling); | |
79072805 LW |
3039 | |
3040 | if (t && f) | |
3041 | return TRUE; | |
3042 | if (t || f) | |
3043 | yyerror("Assignment to both a list and a scalar"); | |
3044 | return FALSE; | |
3045 | } | |
3046 | ||
11343788 MB |
3047 | if (o->op_type == OP_LIST || o->op_flags & OPf_PARENS || |
3048 | o->op_type == OP_RV2AV || o->op_type == OP_RV2HV || | |
3049 | o->op_type == OP_ASLICE || o->op_type == OP_HSLICE) | |
79072805 LW |
3050 | return TRUE; |
3051 | ||
11343788 | 3052 | if (o->op_type == OP_PADAV || o->op_type == OP_PADHV) |
93a17b20 LW |
3053 | return TRUE; |
3054 | ||
11343788 | 3055 | if (o->op_type == OP_RV2SV) |
79072805 LW |
3056 | return FALSE; |
3057 | ||
3058 | return FALSE; | |
3059 | } | |
3060 | ||
3061 | OP * | |
864dbfa3 | 3062 | Perl_newASSIGNOP(pTHX_ I32 flags, OP *left, I32 optype, OP *right) |
79072805 | 3063 | { |
11343788 | 3064 | OP *o; |
79072805 | 3065 | |
a0d0e21e LW |
3066 | if (optype) { |
3067 | if (optype == OP_ANDASSIGN || optype == OP_ORASSIGN) { | |
3068 | return newLOGOP(optype, 0, | |
3069 | mod(scalar(left), optype), | |
3070 | newUNOP(OP_SASSIGN, 0, scalar(right))); | |
3071 | } | |
3072 | else { | |
3073 | return newBINOP(optype, OPf_STACKED, | |
3074 | mod(scalar(left), optype), scalar(right)); | |
3075 | } | |
3076 | } | |
3077 | ||
79072805 | 3078 | if (list_assignment(left)) { |
6ee623d5 | 3079 | dTHR; |
3280af22 NIS |
3080 | PL_modcount = 0; |
3081 | PL_eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ | |
463ee0b2 | 3082 | left = mod(left, OP_AASSIGN); |
3280af22 NIS |
3083 | if (PL_eval_start) |
3084 | PL_eval_start = 0; | |
748a9306 | 3085 | else { |
a0d0e21e LW |
3086 | op_free(left); |
3087 | op_free(right); | |
3088 | return Nullop; | |
3089 | } | |
11343788 | 3090 | o = newBINOP(OP_AASSIGN, flags, |
8990e307 LW |
3091 | list(force_list(right)), |
3092 | list(force_list(left)) ); | |
11343788 | 3093 | o->op_private = 0 | (flags >> 8); |
a0d0e21e | 3094 | if (!(left->op_private & OPpLVAL_INTRO)) { |
79072805 | 3095 | OP *curop; |
11343788 | 3096 | OP *lastop = o; |
3280af22 | 3097 | PL_generation++; |
11343788 | 3098 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
22c35a8c | 3099 | if (PL_opargs[curop->op_type] & OA_DANGEROUS) { |
79072805 LW |
3100 | if (curop->op_type == OP_GV) { |
3101 | GV *gv = ((GVOP*)curop)->op_gv; | |
3280af22 | 3102 | if (gv == PL_defgv || SvCUR(gv) == PL_generation) |
79072805 | 3103 | break; |
3280af22 | 3104 | SvCUR(gv) = PL_generation; |
79072805 | 3105 | } |
748a9306 LW |
3106 | else if (curop->op_type == OP_PADSV || |
3107 | curop->op_type == OP_PADAV || | |
3108 | curop->op_type == OP_PADHV || | |
3109 | curop->op_type == OP_PADANY) { | |
3280af22 | 3110 | SV **svp = AvARRAY(PL_comppad_name); |
8e07c86e | 3111 | SV *sv = svp[curop->op_targ]; |
3280af22 | 3112 | if (SvCUR(sv) == PL_generation) |
748a9306 | 3113 | break; |
3280af22 | 3114 | SvCUR(sv) = PL_generation; /* (SvCUR not used any more) */ |
748a9306 | 3115 | } |
79072805 LW |
3116 | else if (curop->op_type == OP_RV2CV) |
3117 | break; | |
3118 | else if (curop->op_type == OP_RV2SV || | |
3119 | curop->op_type == OP_RV2AV || | |
3120 | curop->op_type == OP_RV2HV || | |
3121 | curop->op_type == OP_RV2GV) { | |
3122 | if (lastop->op_type != OP_GV) /* funny deref? */ | |
3123 | break; | |
3124 | } | |
1167e5da SM |
3125 | else if (curop->op_type == OP_PUSHRE) { |
3126 | if (((PMOP*)curop)->op_pmreplroot) { | |
3127 | GV *gv = (GV*)((PMOP*)curop)->op_pmreplroot; | |
3280af22 | 3128 | if (gv == PL_defgv || SvCUR(gv) == PL_generation) |
1167e5da | 3129 | break; |
3280af22 | 3130 | SvCUR(gv) = PL_generation; |
1167e5da SM |
3131 | } |
3132 | } | |
79072805 LW |
3133 | else |
3134 | break; | |
3135 | } | |
3136 | lastop = curop; | |
3137 | } | |
11343788 MB |
3138 | if (curop != o) |
3139 | o->op_private = OPpASSIGN_COMMON; | |
79072805 | 3140 | } |
c07a80fd | 3141 | if (right && right->op_type == OP_SPLIT) { |
3142 | OP* tmpop; | |
3143 | if ((tmpop = ((LISTOP*)right)->op_first) && | |
3144 | tmpop->op_type == OP_PUSHRE) | |
3145 | { | |
3146 | PMOP *pm = (PMOP*)tmpop; | |
3147 | if (left->op_type == OP_RV2AV && | |
3148 | !(left->op_private & OPpLVAL_INTRO) && | |
11343788 | 3149 | !(o->op_private & OPpASSIGN_COMMON) ) |
c07a80fd | 3150 | { |
3151 | tmpop = ((UNOP*)left)->op_first; | |
3152 | if (tmpop->op_type == OP_GV && !pm->op_pmreplroot) { | |
3153 | pm->op_pmreplroot = (OP*)((GVOP*)tmpop)->op_gv; | |
3154 | pm->op_pmflags |= PMf_ONCE; | |
11343788 | 3155 | tmpop = cUNOPo->op_first; /* to list (nulled) */ |
c07a80fd | 3156 | tmpop = ((UNOP*)tmpop)->op_first; /* to pushmark */ |
3157 | tmpop->op_sibling = Nullop; /* don't free split */ | |
3158 | right->op_next = tmpop->op_next; /* fix starting loc */ | |
11343788 | 3159 | op_free(o); /* blow off assign */ |
54310121 | 3160 | right->op_flags &= ~OPf_WANT; |
a5f75d66 | 3161 | /* "I don't know and I don't care." */ |
c07a80fd | 3162 | return right; |
3163 | } | |
3164 | } | |
3165 | else { | |
3280af22 | 3166 | if (PL_modcount < 10000 && |
c07a80fd | 3167 | ((LISTOP*)right)->op_last->op_type == OP_CONST) |
3168 | { | |
3169 | SV *sv = ((SVOP*)((LISTOP*)right)->op_last)->op_sv; | |
3170 | if (SvIVX(sv) == 0) | |
3280af22 | 3171 | sv_setiv(sv, PL_modcount+1); |
c07a80fd | 3172 | } |
3173 | } | |
3174 | } | |
3175 | } | |
11343788 | 3176 | return o; |
79072805 LW |
3177 | } |
3178 | if (!right) | |
3179 | right = newOP(OP_UNDEF, 0); | |
3180 | if (right->op_type == OP_READLINE) { | |
3181 | right->op_flags |= OPf_STACKED; | |
463ee0b2 | 3182 | return newBINOP(OP_NULL, flags, mod(scalar(left), OP_SASSIGN), scalar(right)); |
79072805 | 3183 | } |
a0d0e21e | 3184 | else { |
3280af22 | 3185 | PL_eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ |
11343788 | 3186 | o = newBINOP(OP_SASSIGN, flags, |
463ee0b2 | 3187 | scalar(right), mod(scalar(left), OP_SASSIGN) ); |
3280af22 NIS |
3188 | if (PL_eval_start) |
3189 | PL_eval_start = 0; | |
748a9306 | 3190 | else { |
11343788 | 3191 | op_free(o); |
a0d0e21e LW |
3192 | return Nullop; |
3193 | } | |
3194 | } | |
11343788 | 3195 | return o; |
79072805 LW |
3196 | } |
3197 | ||
3198 | OP * | |
864dbfa3 | 3199 | Perl_newSTATEOP(pTHX_ I32 flags, char *label, OP *o) |
79072805 | 3200 | { |
11343788 | 3201 | dTHR; |
bbce6d69 | 3202 | U32 seq = intro_my(); |
79072805 LW |
3203 | register COP *cop; |
3204 | ||
b7dc083c | 3205 | NewOp(1101, cop, 1, COP); |
3280af22 | 3206 | if (PERLDB_LINE && PL_curcop->cop_line && PL_curstash != PL_debstash) { |
8990e307 | 3207 | cop->op_type = OP_DBSTATE; |
22c35a8c | 3208 | cop->op_ppaddr = PL_ppaddr[ OP_DBSTATE ]; |
8990e307 LW |
3209 | } |
3210 | else { | |
3211 | cop->op_type = OP_NEXTSTATE; | |
22c35a8c | 3212 | cop->op_ppaddr = PL_ppaddr[ OP_NEXTSTATE ]; |
8990e307 | 3213 | } |
79072805 | 3214 | cop->op_flags = flags; |
a0ed51b3 | 3215 | cop->op_private = (PL_hints & HINT_UTF8); |
ff0cee69 | 3216 | #ifdef NATIVE_HINTS |
3217 | cop->op_private |= NATIVE_HINTS; | |
3218 | #endif | |
e24b16f9 | 3219 | PL_compiling.op_private = cop->op_private; |
79072805 LW |
3220 | cop->op_next = (OP*)cop; |
3221 | ||
463ee0b2 LW |
3222 | if (label) { |
3223 | cop->cop_label = label; | |
3280af22 | 3224 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 3225 | } |
bbce6d69 | 3226 | cop->cop_seq = seq; |
3280af22 | 3227 | cop->cop_arybase = PL_curcop->cop_arybase; |
0453d815 | 3228 | if (specialWARN(PL_curcop->cop_warnings)) |
599cee73 PM |
3229 | cop->cop_warnings = PL_curcop->cop_warnings ; |
3230 | else | |
3231 | cop->cop_warnings = newSVsv(PL_curcop->cop_warnings) ; | |
3232 | ||
79072805 | 3233 | |
3280af22 NIS |
3234 | if (PL_copline == NOLINE) |
3235 | cop->cop_line = PL_curcop->cop_line; | |
79072805 | 3236 | else { |
3280af22 NIS |
3237 | cop->cop_line = PL_copline; |
3238 | PL_copline = NOLINE; | |
79072805 | 3239 | } |
3280af22 NIS |
3240 | cop->cop_filegv = (GV*)SvREFCNT_inc(PL_curcop->cop_filegv); |
3241 | cop->cop_stash = PL_curstash; | |
79072805 | 3242 | |
3280af22 NIS |
3243 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
3244 | SV **svp = av_fetch(GvAV(PL_curcop->cop_filegv),(I32)cop->cop_line, FALSE); | |
3245 | if (svp && *svp != &PL_sv_undef && !SvIOK(*svp)) { | |
a0d0e21e | 3246 | (void)SvIOK_on(*svp); |
a5f75d66 | 3247 | SvIVX(*svp) = 1; |
93a17b20 LW |
3248 | SvSTASH(*svp) = (HV*)cop; |
3249 | } | |
3250 | } | |
3251 | ||
11343788 | 3252 | return prepend_elem(OP_LINESEQ, (OP*)cop, o); |
79072805 LW |
3253 | } |
3254 | ||
bbce6d69 | 3255 | /* "Introduce" my variables to visible status. */ |
3256 | U32 | |
864dbfa3 | 3257 | Perl_intro_my(pTHX) |
bbce6d69 | 3258 | { |
3259 | SV **svp; | |
3260 | SV *sv; | |
3261 | I32 i; | |
3262 | ||
3280af22 NIS |
3263 | if (! PL_min_intro_pending) |
3264 | return PL_cop_seqmax; | |
bbce6d69 | 3265 | |
3280af22 NIS |
3266 | svp = AvARRAY(PL_comppad_name); |
3267 | for (i = PL_min_intro_pending; i <= PL_max_intro_pending; i++) { | |
3268 | if ((sv = svp[i]) && sv != &PL_sv_undef && !SvIVX(sv)) { | |
c53d7c7d | 3269 | SvIVX(sv) = PAD_MAX; /* Don't know scope end yet. */ |
65202027 | 3270 | SvNVX(sv) = (NV)PL_cop_seqmax; |
bbce6d69 | 3271 | } |
3272 | } | |
3280af22 NIS |
3273 | PL_min_intro_pending = 0; |
3274 | PL_comppad_name_fill = PL_max_intro_pending; /* Needn't search higher */ | |
3275 | return PL_cop_seqmax++; | |
bbce6d69 | 3276 | } |
3277 | ||
79072805 | 3278 | OP * |
864dbfa3 | 3279 | Perl_newLOGOP(pTHX_ I32 type, I32 flags, OP *first, OP *other) |
79072805 | 3280 | { |
883ffac3 CS |
3281 | return new_logop(type, flags, &first, &other); |
3282 | } | |
3283 | ||
3bd495df | 3284 | STATIC OP * |
cea2e8a9 | 3285 | S_new_logop(pTHX_ I32 type, I32 flags, OP** firstp, OP** otherp) |
883ffac3 | 3286 | { |
11343788 | 3287 | dTHR; |
79072805 | 3288 | LOGOP *logop; |
11343788 | 3289 | OP *o; |
883ffac3 CS |
3290 | OP *first = *firstp; |
3291 | OP *other = *otherp; | |
79072805 | 3292 | |
a0d0e21e LW |
3293 | if (type == OP_XOR) /* Not short circuit, but here by precedence. */ |
3294 | return newBINOP(type, flags, scalar(first), scalar(other)); | |
3295 | ||
8990e307 | 3296 | scalarboolean(first); |
79072805 LW |
3297 | /* optimize "!a && b" to "a || b", and "!a || b" to "a && b" */ |
3298 | if (first->op_type == OP_NOT && (first->op_flags & OPf_SPECIAL)) { | |
3299 | if (type == OP_AND || type == OP_OR) { | |
3300 | if (type == OP_AND) | |
3301 | type = OP_OR; | |
3302 | else | |
3303 | type = OP_AND; | |
11343788 | 3304 | o = first; |
883ffac3 | 3305 | first = *firstp = cUNOPo->op_first; |
11343788 MB |
3306 | if (o->op_next) |
3307 | first->op_next = o->op_next; | |
3308 | cUNOPo->op_first = Nullop; | |
3309 | op_free(o); | |
79072805 LW |
3310 | } |
3311 | } | |
3312 | if (first->op_type == OP_CONST) { | |
599cee73 | 3313 | if (ckWARN(WARN_PRECEDENCE) && (first->op_private & OPpCONST_BARE)) |
cea2e8a9 | 3314 | Perl_warner(aTHX_ WARN_PRECEDENCE, "Probable precedence problem on %s", |
22c35a8c | 3315 | PL_op_desc[type]); |
79072805 LW |
3316 | if ((type == OP_AND) == (SvTRUE(((SVOP*)first)->op_sv))) { |
3317 | op_free(first); | |
883ffac3 | 3318 | *firstp = Nullop; |
79072805 LW |
3319 | return other; |
3320 | } | |
3321 | else { | |
3322 | op_free(other); | |
883ffac3 | 3323 | *otherp = Nullop; |
79072805 LW |
3324 | return first; |
3325 | } | |
3326 | } | |
3327 | else if (first->op_type == OP_WANTARRAY) { | |
3328 | if (type == OP_AND) | |
3329 | list(other); | |
3330 | else | |
3331 | scalar(other); | |
3332 | } | |
599cee73 | 3333 | else if (ckWARN(WARN_UNSAFE) && (first->op_flags & OPf_KIDS)) { |
a6006777 | 3334 | OP *k1 = ((UNOP*)first)->op_first; |
3335 | OP *k2 = k1->op_sibling; | |
3336 | OPCODE warnop = 0; | |
3337 | switch (first->op_type) | |
3338 | { | |
3339 | case OP_NULL: | |
3340 | if (k2 && k2->op_type == OP_READLINE | |
3341 | && (k2->op_flags & OPf_STACKED) | |
55d729e4 | 3342 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
a6006777 | 3343 | warnop = k2->op_type; |
3344 | break; | |
3345 | ||
3346 | case OP_SASSIGN: | |
68dc0745 | 3347 | if (k1->op_type == OP_READDIR |
3348 | || k1->op_type == OP_GLOB | |
3349 | || k1->op_type == OP_EACH) | |
a6006777 | 3350 | warnop = k1->op_type; |
3351 | break; | |
3352 | } | |
8ebc5c01 | 3353 | if (warnop) { |
3280af22 NIS |
3354 | line_t oldline = PL_curcop->cop_line; |
3355 | PL_curcop->cop_line = PL_copline; | |
cea2e8a9 | 3356 | Perl_warner(aTHX_ WARN_UNSAFE, |
599cee73 | 3357 | "Value of %s%s can be \"0\"; test with defined()", |
22c35a8c | 3358 | PL_op_desc[warnop], |
68dc0745 | 3359 | ((warnop == OP_READLINE || warnop == OP_GLOB) |
3360 | ? " construct" : "() operator")); | |
3280af22 | 3361 | PL_curcop->cop_line = oldline; |
8ebc5c01 | 3362 | } |
a6006777 | 3363 | } |
79072805 LW |
3364 | |
3365 | if (!other) | |
3366 | return first; | |
3367 | ||
a0d0e21e LW |
3368 | if (type == OP_ANDASSIGN || type == OP_ORASSIGN) |
3369 | other->op_private |= OPpASSIGN_BACKWARDS; /* other is an OP_SASSIGN */ | |
3370 | ||
b7dc083c | 3371 | NewOp(1101, logop, 1, LOGOP); |
79072805 LW |
3372 | |
3373 | logop->op_type = type; | |
22c35a8c | 3374 | logop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
3375 | logop->op_first = first; |
3376 | logop->op_flags = flags | OPf_KIDS; | |
3377 | logop->op_other = LINKLIST(other); | |
c07a80fd | 3378 | logop->op_private = 1 | (flags >> 8); |
79072805 LW |
3379 | |
3380 | /* establish postfix order */ | |
3381 | logop->op_next = LINKLIST(first); | |
3382 | first->op_next = (OP*)logop; | |
3383 | first->op_sibling = other; | |
3384 | ||
11343788 MB |
3385 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
3386 | other->op_next = o; | |
79072805 | 3387 | |
11343788 | 3388 | return o; |
79072805 LW |
3389 | } |
3390 | ||
3391 | OP * | |
864dbfa3 | 3392 | Perl_newCONDOP(pTHX_ I32 flags, OP *first, OP *trueop, OP *falseop) |
79072805 | 3393 | { |
11343788 | 3394 | dTHR; |
1a67a97c SM |
3395 | LOGOP *logop; |
3396 | OP *start; | |
11343788 | 3397 | OP *o; |
79072805 | 3398 | |
b1cb66bf | 3399 | if (!falseop) |
3400 | return newLOGOP(OP_AND, 0, first, trueop); | |
3401 | if (!trueop) | |
3402 | return newLOGOP(OP_OR, 0, first, falseop); | |
79072805 | 3403 | |
8990e307 | 3404 | scalarboolean(first); |
79072805 LW |
3405 | if (first->op_type == OP_CONST) { |
3406 | if (SvTRUE(((SVOP*)first)->op_sv)) { | |
3407 | op_free(first); | |
b1cb66bf | 3408 | op_free(falseop); |
3409 | return trueop; | |
79072805 LW |
3410 | } |
3411 | else { | |
3412 | op_free(first); | |
b1cb66bf | 3413 | op_free(trueop); |
3414 | return falseop; | |
79072805 LW |
3415 | } |
3416 | } | |
3417 | else if (first->op_type == OP_WANTARRAY) { | |
b1cb66bf | 3418 | list(trueop); |
3419 | scalar(falseop); | |
79072805 | 3420 | } |
1a67a97c SM |
3421 | NewOp(1101, logop, 1, LOGOP); |
3422 | logop->op_type = OP_COND_EXPR; | |
3423 | logop->op_ppaddr = PL_ppaddr[OP_COND_EXPR]; | |
3424 | logop->op_first = first; | |
3425 | logop->op_flags = flags | OPf_KIDS; | |
3426 | logop->op_private = 1 | (flags >> 8); | |
3427 | logop->op_other = LINKLIST(trueop); | |
3428 | logop->op_next = LINKLIST(falseop); | |
79072805 | 3429 | |
79072805 LW |
3430 | |
3431 | /* establish postfix order */ | |
1a67a97c SM |
3432 | start = LINKLIST(first); |
3433 | first->op_next = (OP*)logop; | |
79072805 | 3434 | |
b1cb66bf | 3435 | first->op_sibling = trueop; |
3436 | trueop->op_sibling = falseop; | |
1a67a97c | 3437 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
79072805 | 3438 | |
1a67a97c | 3439 | trueop->op_next = falseop->op_next = o; |
79072805 | 3440 | |
1a67a97c | 3441 | o->op_next = start; |
11343788 | 3442 | return o; |
79072805 LW |
3443 | } |
3444 | ||
3445 | OP * | |
864dbfa3 | 3446 | Perl_newRANGE(pTHX_ I32 flags, OP *left, OP *right) |
79072805 | 3447 | { |
b35b2403 | 3448 | dTHR; |
1a67a97c | 3449 | LOGOP *range; |
79072805 LW |
3450 | OP *flip; |
3451 | OP *flop; | |
1a67a97c | 3452 | OP *leftstart; |
11343788 | 3453 | OP *o; |
79072805 | 3454 | |
1a67a97c | 3455 | NewOp(1101, range, 1, LOGOP); |
79072805 | 3456 | |
1a67a97c SM |
3457 | range->op_type = OP_RANGE; |
3458 | range->op_ppaddr = PL_ppaddr[OP_RANGE]; | |
3459 | range->op_first = left; | |
3460 | range->op_flags = OPf_KIDS; | |
3461 | leftstart = LINKLIST(left); | |
3462 | range->op_other = LINKLIST(right); | |
3463 | range->op_private = 1 | (flags >> 8); | |
79072805 LW |
3464 | |
3465 | left->op_sibling = right; | |
3466 | ||
1a67a97c SM |
3467 | range->op_next = (OP*)range; |
3468 | flip = newUNOP(OP_FLIP, flags, (OP*)range); | |
79072805 | 3469 | flop = newUNOP(OP_FLOP, 0, flip); |
11343788 | 3470 | o = newUNOP(OP_NULL, 0, flop); |
79072805 | 3471 | linklist(flop); |
1a67a97c | 3472 | range->op_next = leftstart; |
79072805 LW |
3473 | |
3474 | left->op_next = flip; | |
3475 | right->op_next = flop; | |
3476 | ||
1a67a97c SM |
3477 | range->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
3478 | sv_upgrade(PAD_SV(range->op_targ), SVt_PVNV); | |
ed6116ce | 3479 | flip->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 LW |
3480 | sv_upgrade(PAD_SV(flip->op_targ), SVt_PVNV); |
3481 | ||
3482 | flip->op_private = left->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
3483 | flop->op_private = right->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
3484 | ||
11343788 | 3485 | flip->op_next = o; |
79072805 | 3486 | if (!flip->op_private || !flop->op_private) |
11343788 | 3487 | linklist(o); /* blow off optimizer unless constant */ |
79072805 | 3488 | |
11343788 | 3489 | return o; |
79072805 LW |
3490 | } |
3491 | ||
3492 | OP * | |
864dbfa3 | 3493 | Perl_newLOOPOP(pTHX_ I32 flags, I32 debuggable, OP *expr, OP *block) |
79072805 | 3494 | { |
11343788 | 3495 | dTHR; |
463ee0b2 | 3496 | OP* listop; |
11343788 | 3497 | OP* o; |
463ee0b2 | 3498 | int once = block && block->op_flags & OPf_SPECIAL && |
a0d0e21e | 3499 | (block->op_type == OP_ENTERSUB || block->op_type == OP_NULL); |
93a17b20 | 3500 | |
463ee0b2 LW |
3501 | if (expr) { |
3502 | if (once && expr->op_type == OP_CONST && !SvTRUE(((SVOP*)expr)->op_sv)) | |
3503 | return block; /* do {} while 0 does once */ | |
fb73857a | 3504 | if (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB |
3505 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB)) { | |
774d564b | 3506 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 3507 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 GS |
3508 | } else if (expr->op_flags & OPf_KIDS) { |
3509 | OP *k1 = ((UNOP*)expr)->op_first; | |
3510 | OP *k2 = (k1) ? k1->op_sibling : NULL; | |
3511 | switch (expr->op_type) { | |
3512 | case OP_NULL: | |
3513 | if (k2 && k2->op_type == OP_READLINE | |
3514 | && (k2->op_flags & OPf_STACKED) | |
3515 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) | |
3516 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3517 | break; | |
3518 | ||
3519 | case OP_SASSIGN: | |
3520 | if (k1->op_type == OP_READDIR | |
3521 | || k1->op_type == OP_GLOB | |
3522 | || k1->op_type == OP_EACH) | |
3523 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3524 | break; | |
3525 | } | |
774d564b | 3526 | } |
463ee0b2 | 3527 | } |
93a17b20 | 3528 | |
8990e307 | 3529 | listop = append_elem(OP_LINESEQ, block, newOP(OP_UNSTACK, 0)); |
883ffac3 | 3530 | o = new_logop(OP_AND, 0, &expr, &listop); |
463ee0b2 | 3531 | |
883ffac3 CS |
3532 | if (listop) |
3533 | ((LISTOP*)listop)->op_last->op_next = LINKLIST(o); | |
79072805 | 3534 | |
11343788 MB |
3535 | if (once && o != listop) |
3536 | o->op_next = ((LOGOP*)cUNOPo->op_first)->op_other; | |
79072805 | 3537 | |
11343788 MB |
3538 | if (o == listop) |
3539 | o = newUNOP(OP_NULL, 0, o); /* or do {} while 1 loses outer block */ | |
748a9306 | 3540 | |
11343788 MB |
3541 | o->op_flags |= flags; |
3542 | o = scope(o); | |
3543 | o->op_flags |= OPf_SPECIAL; /* suppress POPBLOCK curpm restoration*/ | |
3544 | return o; | |
79072805 LW |
3545 | } |
3546 | ||
3547 | OP * | |
864dbfa3 | 3548 | Perl_newWHILEOP(pTHX_ I32 flags, I32 debuggable, LOOP *loop, I32 whileline, OP *expr, OP *block, OP *cont) |
79072805 | 3549 | { |
11343788 | 3550 | dTHR; |
79072805 LW |
3551 | OP *redo; |
3552 | OP *next = 0; | |
3553 | OP *listop; | |
11343788 | 3554 | OP *o; |
79072805 LW |
3555 | OP *condop; |
3556 | ||
fb73857a | 3557 | if (expr && (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB |
3558 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB))) { | |
748a9306 | 3559 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 3560 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 GS |
3561 | } else if (expr && (expr->op_flags & OPf_KIDS)) { |
3562 | OP *k1 = ((UNOP*)expr)->op_first; | |
3563 | OP *k2 = (k1) ? k1->op_sibling : NULL; | |
3564 | switch (expr->op_type) { | |
3565 | case OP_NULL: | |
3566 | if (k2 && k2->op_type == OP_READLINE | |
3567 | && (k2->op_flags & OPf_STACKED) | |
3568 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) | |
3569 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3570 | break; | |
3571 | ||
3572 | case OP_SASSIGN: | |
3573 | if (k1->op_type == OP_READDIR | |
3574 | || k1->op_type == OP_GLOB | |
3575 | || k1->op_type == OP_EACH) | |
3576 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3577 | break; | |
3578 | } | |
748a9306 | 3579 | } |
79072805 LW |
3580 | |
3581 | if (!block) | |
3582 | block = newOP(OP_NULL, 0); | |
3583 | ||
3584 | if (cont) | |
3585 | next = LINKLIST(cont); | |
fb73857a | 3586 | if (expr) { |
79072805 | 3587 | cont = append_elem(OP_LINESEQ, cont, newOP(OP_UNSTACK, 0)); |
fb73857a | 3588 | if ((line_t)whileline != NOLINE) { |
3280af22 | 3589 | PL_copline = whileline; |
fb73857a | 3590 | cont = append_elem(OP_LINESEQ, cont, |
3591 | newSTATEOP(0, Nullch, Nullop)); | |
3592 | } | |
3593 | } | |
79072805 | 3594 | |
463ee0b2 | 3595 | listop = append_list(OP_LINESEQ, (LISTOP*)block, (LISTOP*)cont); |
79072805 LW |
3596 | redo = LINKLIST(listop); |
3597 | ||
3598 | if (expr) { | |
3280af22 | 3599 | PL_copline = whileline; |
883ffac3 CS |
3600 | scalar(listop); |
3601 | o = new_logop(OP_AND, 0, &expr, &listop); | |
11343788 | 3602 | if (o == expr && o->op_type == OP_CONST && !SvTRUE(cSVOPo->op_sv)) { |
85e6fe83 | 3603 | op_free(expr); /* oops, it's a while (0) */ |
463ee0b2 | 3604 | op_free((OP*)loop); |
883ffac3 | 3605 | return Nullop; /* listop already freed by new_logop */ |
463ee0b2 | 3606 | } |
883ffac3 CS |
3607 | if (listop) |
3608 | ((LISTOP*)listop)->op_last->op_next = condop = | |
3609 | (o == listop ? redo : LINKLIST(o)); | |
79072805 LW |
3610 | if (!next) |
3611 | next = condop; | |
3612 | } | |
3613 | else | |
11343788 | 3614 | o = listop; |
79072805 LW |
3615 | |
3616 | if (!loop) { | |
b7dc083c | 3617 | NewOp(1101,loop,1,LOOP); |
79072805 | 3618 | loop->op_type = OP_ENTERLOOP; |
22c35a8c | 3619 | loop->op_ppaddr = PL_ppaddr[OP_ENTERLOOP]; |
79072805 LW |
3620 | loop->op_private = 0; |
3621 | loop->op_next = (OP*)loop; | |
3622 | } | |
3623 | ||
11343788 | 3624 | o = newBINOP(OP_LEAVELOOP, 0, (OP*)loop, o); |
79072805 LW |
3625 | |
3626 | loop->op_redoop = redo; | |
11343788 | 3627 | loop->op_lastop = o; |
79072805 LW |
3628 | |
3629 | if (next) | |
3630 | loop->op_nextop = next; | |
3631 | else | |
11343788 | 3632 | loop->op_nextop = o; |
79072805 | 3633 | |
11343788 MB |
3634 | o->op_flags |= flags; |
3635 | o->op_private |= (flags >> 8); | |
3636 | return o; | |
79072805 LW |
3637 | } |
3638 | ||
3639 | OP * | |
864dbfa3 | 3640 | Perl_newFOROP(pTHX_ I32 flags,char *label,line_t forline,OP *sv,OP *expr,OP *block,OP *cont) |
79072805 LW |
3641 | { |
3642 | LOOP *loop; | |
b7dc083c | 3643 | LOOP *tmp; |
fb73857a | 3644 | OP *wop; |
85e6fe83 | 3645 | int padoff = 0; |
4633a7c4 | 3646 | I32 iterflags = 0; |
79072805 | 3647 | |
79072805 | 3648 | if (sv) { |
85e6fe83 | 3649 | if (sv->op_type == OP_RV2SV) { /* symbol table variable */ |
748a9306 | 3650 | sv->op_type = OP_RV2GV; |
22c35a8c | 3651 | sv->op_ppaddr = PL_ppaddr[OP_RV2GV]; |
79072805 | 3652 | } |
85e6fe83 LW |
3653 | else if (sv->op_type == OP_PADSV) { /* private variable */ |
3654 | padoff = sv->op_targ; | |
3655 | op_free(sv); | |
3656 | sv = Nullop; | |
3657 | } | |
54b9620d MB |
3658 | else if (sv->op_type == OP_THREADSV) { /* per-thread variable */ |
3659 | padoff = sv->op_targ; | |
3660 | iterflags |= OPf_SPECIAL; | |
3661 | op_free(sv); | |
3662 | sv = Nullop; | |
3663 | } | |
79072805 | 3664 | else |
cea2e8a9 | 3665 | Perl_croak(aTHX_ "Can't use %s for loop variable", PL_op_desc[sv->op_type]); |
79072805 LW |
3666 | } |
3667 | else { | |
54b9620d MB |
3668 | #ifdef USE_THREADS |
3669 | padoff = find_threadsv("_"); | |
3670 | iterflags |= OPf_SPECIAL; | |
3671 | #else | |
3280af22 | 3672 | sv = newGVOP(OP_GV, 0, PL_defgv); |
54b9620d | 3673 | #endif |
79072805 | 3674 | } |
5f05dabc | 3675 | if (expr->op_type == OP_RV2AV || expr->op_type == OP_PADAV) { |
89ea2908 | 3676 | expr = mod(force_list(scalar(ref(expr, OP_ITER))), OP_GREPSTART); |
4633a7c4 LW |
3677 | iterflags |= OPf_STACKED; |
3678 | } | |
89ea2908 GA |
3679 | else if (expr->op_type == OP_NULL && |
3680 | (expr->op_flags & OPf_KIDS) && | |
3681 | ((BINOP*)expr)->op_first->op_type == OP_FLOP) | |
3682 | { | |
3683 | /* Basically turn for($x..$y) into the same as for($x,$y), but we | |
3684 | * set the STACKED flag to indicate that these values are to be | |
3685 | * treated as min/max values by 'pp_iterinit'. | |
3686 | */ | |
3687 | UNOP* flip = (UNOP*)((UNOP*)((BINOP*)expr)->op_first)->op_first; | |
1a67a97c | 3688 | LOGOP* range = (LOGOP*) flip->op_first; |
89ea2908 GA |
3689 | OP* left = range->op_first; |
3690 | OP* right = left->op_sibling; | |
5152d7c7 | 3691 | LISTOP* listop; |
89ea2908 GA |
3692 | |
3693 | range->op_flags &= ~OPf_KIDS; | |
3694 | range->op_first = Nullop; | |
3695 | ||
5152d7c7 | 3696 | listop = (LISTOP*)newLISTOP(OP_LIST, 0, left, right); |
1a67a97c SM |
3697 | listop->op_first->op_next = range->op_next; |
3698 | left->op_next = range->op_other; | |
5152d7c7 GS |
3699 | right->op_next = (OP*)listop; |
3700 | listop->op_next = listop->op_first; | |
89ea2908 GA |
3701 | |
3702 | op_free(expr); | |
5152d7c7 | 3703 | expr = (OP*)(listop); |
89ea2908 GA |
3704 | null(expr); |
3705 | iterflags |= OPf_STACKED; | |
3706 | } | |
3707 | else { | |
3708 | expr = mod(force_list(expr), OP_GREPSTART); | |
3709 | } | |
3710 | ||
3711 | ||
4633a7c4 | 3712 | loop = (LOOP*)list(convert(OP_ENTERITER, iterflags, |
89ea2908 | 3713 | append_elem(OP_LIST, expr, scalar(sv)))); |
85e6fe83 | 3714 | assert(!loop->op_next); |
b7dc083c NIS |
3715 | #ifdef PL_OP_SLAB_ALLOC |
3716 | NewOp(1234,tmp,1,LOOP); | |
3717 | Copy(loop,tmp,1,LOOP); | |
3718 | loop = tmp; | |
3719 | #else | |
85e6fe83 | 3720 | Renew(loop, 1, LOOP); |
b7dc083c | 3721 | #endif |
85e6fe83 | 3722 | loop->op_targ = padoff; |
fb73857a | 3723 | wop = newWHILEOP(flags, 1, loop, forline, newOP(OP_ITER, 0), block, cont); |
3280af22 | 3724 | PL_copline = forline; |
fb73857a | 3725 | return newSTATEOP(0, label, wop); |
79072805 LW |
3726 | } |
3727 | ||
8990e307 | 3728 | OP* |
864dbfa3 | 3729 | Perl_newLOOPEX(pTHX_ I32 type, OP *label) |
8990e307 | 3730 | { |
11343788 MB |
3731 | dTHR; |
3732 | OP *o; | |
2d8e6c8d GS |
3733 | STRLEN n_a; |
3734 | ||
8990e307 | 3735 | if (type != OP_GOTO || label->op_type == OP_CONST) { |
cdaebead MB |
3736 | /* "last()" means "last" */ |
3737 | if (label->op_type == OP_STUB && (label->op_flags & OPf_PARENS)) | |
3738 | o = newOP(type, OPf_SPECIAL); | |
3739 | else { | |
3740 | o = newPVOP(type, 0, savepv(label->op_type == OP_CONST | |
2d8e6c8d | 3741 | ? SvPVx(((SVOP*)label)->op_sv, n_a) |
cdaebead MB |
3742 | : "")); |
3743 | } | |
8990e307 LW |
3744 | op_free(label); |
3745 | } | |
3746 | else { | |
a0d0e21e LW |
3747 | if (label->op_type == OP_ENTERSUB) |
3748 | label = newUNOP(OP_REFGEN, 0, mod(label, OP_REFGEN)); | |
11343788 | 3749 | o = newUNOP(type, OPf_STACKED, label); |
8990e307 | 3750 | } |
3280af22 | 3751 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 3752 | return o; |
8990e307 LW |
3753 | } |
3754 | ||
79072805 | 3755 | void |
864dbfa3 | 3756 | Perl_cv_undef(pTHX_ CV *cv) |
79072805 | 3757 | { |
11343788 MB |
3758 | dTHR; |
3759 | #ifdef USE_THREADS | |
e858de61 MB |
3760 | if (CvMUTEXP(cv)) { |
3761 | MUTEX_DESTROY(CvMUTEXP(cv)); | |
3762 | Safefree(CvMUTEXP(cv)); | |
3763 | CvMUTEXP(cv) = 0; | |
3764 | } | |
11343788 MB |
3765 | #endif /* USE_THREADS */ |
3766 | ||
a0d0e21e | 3767 | if (!CvXSUB(cv) && CvROOT(cv)) { |
11343788 MB |
3768 | #ifdef USE_THREADS |
3769 | if (CvDEPTH(cv) || (CvOWNER(cv) && CvOWNER(cv) != thr)) | |
cea2e8a9 | 3770 | Perl_croak(aTHX_ "Can't undef active subroutine"); |
11343788 | 3771 | #else |
a0d0e21e | 3772 | if (CvDEPTH(cv)) |
cea2e8a9 | 3773 | Perl_croak(aTHX_ "Can't undef active subroutine"); |
11343788 | 3774 | #endif /* USE_THREADS */ |
8990e307 | 3775 | ENTER; |
a0d0e21e | 3776 | |
3280af22 NIS |
3777 | SAVESPTR(PL_curpad); |
3778 | PL_curpad = 0; | |
a0d0e21e | 3779 | |
a5f75d66 | 3780 | if (!CvCLONED(cv)) |
748a9306 | 3781 | op_free(CvROOT(cv)); |
79072805 | 3782 | CvROOT(cv) = Nullop; |
8990e307 | 3783 | LEAVE; |
79072805 | 3784 | } |
1d5db326 | 3785 | SvPOK_off((SV*)cv); /* forget prototype */ |
44a8e56a | 3786 | CvFLAGS(cv) = 0; |
8e07c86e AD |
3787 | SvREFCNT_dec(CvGV(cv)); |
3788 | CvGV(cv) = Nullgv; | |
3789 | SvREFCNT_dec(CvOUTSIDE(cv)); | |
3790 | CvOUTSIDE(cv) = Nullcv; | |
3791 | if (CvPADLIST(cv)) { | |
8ebc5c01 | 3792 | /* may be during global destruction */ |
3793 | if (SvREFCNT(CvPADLIST(cv))) { | |
93965878 | 3794 | I32 i = AvFILLp(CvPADLIST(cv)); |
8ebc5c01 | 3795 | while (i >= 0) { |
3796 | SV** svp = av_fetch(CvPADLIST(cv), i--, FALSE); | |
46fc3d4c | 3797 | SV* sv = svp ? *svp : Nullsv; |
3798 | if (!sv) | |
3799 | continue; | |
3280af22 NIS |
3800 | if (sv == (SV*)PL_comppad_name) |
3801 | PL_comppad_name = Nullav; | |
3802 | else if (sv == (SV*)PL_comppad) { | |
3803 | PL_comppad = Nullav; | |
3804 | PL_curpad = Null(SV**); | |
46fc3d4c | 3805 | } |
3806 | SvREFCNT_dec(sv); | |
8ebc5c01 | 3807 | } |
3808 | SvREFCNT_dec((SV*)CvPADLIST(cv)); | |
8e07c86e | 3809 | } |
8e07c86e AD |
3810 | CvPADLIST(cv) = Nullav; |
3811 | } | |
79072805 LW |
3812 | } |
3813 | ||
5f05dabc | 3814 | #ifdef DEBUG_CLOSURES |
76e3520e | 3815 | STATIC void |
ba106d47 | 3816 | cv_dump(CV *cv) |
5f05dabc | 3817 | { |
3818 | CV *outside = CvOUTSIDE(cv); | |
3819 | AV* padlist = CvPADLIST(cv); | |
4fdae800 | 3820 | AV* pad_name; |
3821 | AV* pad; | |
3822 | SV** pname; | |
3823 | SV** ppad; | |
5f05dabc | 3824 | I32 ix; |
3825 | ||
fb73857a | 3826 | PerlIO_printf(Perl_debug_log, "\tCV=0x%lx (%s), OUTSIDE=0x%lx (%s)\n", |
ab50184a CS |
3827 | cv, |
3828 | (CvANON(cv) ? "ANON" | |
6b88bc9c | 3829 | : (cv == PL_main_cv) ? "MAIN" |
33b8ce05 | 3830 | : CvUNIQUE(cv) ? "UNIQUE" |
44a8e56a | 3831 | : CvGV(cv) ? GvNAME(CvGV(cv)) : "UNDEFINED"), |
ab50184a CS |
3832 | outside, |
3833 | (!outside ? "null" | |
3834 | : CvANON(outside) ? "ANON" | |
6b88bc9c | 3835 | : (outside == PL_main_cv) ? "MAIN" |
07055b4c | 3836 | : CvUNIQUE(outside) ? "UNIQUE" |
44a8e56a | 3837 | : CvGV(outside) ? GvNAME(CvGV(outside)) : "UNDEFINED")); |
5f05dabc | 3838 | |
4fdae800 | 3839 | if (!padlist) |
3840 | return; | |
3841 | ||
3842 | pad_name = (AV*)*av_fetch(padlist, 0, FALSE); | |
3843 | pad = (AV*)*av_fetch(padlist, 1, FALSE); | |
3844 | pname = AvARRAY(pad_name); | |
3845 | ppad = AvARRAY(pad); | |
3846 | ||
93965878 | 3847 | for (ix = 1; ix <= AvFILLp(pad_name); ix++) { |
5f05dabc | 3848 | if (SvPOK(pname[ix])) |
fb73857a | 3849 | PerlIO_printf(Perl_debug_log, "\t%4d. 0x%lx (%s\"%s\" %ld-%ld)\n", |
4fdae800 | 3850 | ix, ppad[ix], |
3851 | SvFAKE(pname[ix]) ? "FAKE " : "", | |
3852 | SvPVX(pname[ix]), | |
ab50184a CS |
3853 | (long)I_32(SvNVX(pname[ix])), |
3854 | (long)SvIVX(pname[ix])); | |
5f05dabc | 3855 | } |
3856 | } | |
3857 | #endif /* DEBUG_CLOSURES */ | |
3858 | ||
76e3520e | 3859 | STATIC CV * |
cea2e8a9 | 3860 | S_cv_clone2(pTHX_ CV *proto, CV *outside) |
748a9306 | 3861 | { |
11343788 | 3862 | dTHR; |
748a9306 LW |
3863 | AV* av; |
3864 | I32 ix; | |
3865 | AV* protopadlist = CvPADLIST(proto); | |
3866 | AV* protopad_name = (AV*)*av_fetch(protopadlist, 0, FALSE); | |
3867 | AV* protopad = (AV*)*av_fetch(protopadlist, 1, FALSE); | |
5f05dabc | 3868 | SV** pname = AvARRAY(protopad_name); |
3869 | SV** ppad = AvARRAY(protopad); | |
93965878 NIS |
3870 | I32 fname = AvFILLp(protopad_name); |
3871 | I32 fpad = AvFILLp(protopad); | |
748a9306 LW |
3872 | AV* comppadlist; |
3873 | CV* cv; | |
3874 | ||
07055b4c CS |
3875 | assert(!CvUNIQUE(proto)); |
3876 | ||
748a9306 | 3877 | ENTER; |
3280af22 NIS |
3878 | SAVESPTR(PL_curpad); |
3879 | SAVESPTR(PL_comppad); | |
3880 | SAVESPTR(PL_comppad_name); | |
3881 | SAVESPTR(PL_compcv); | |
748a9306 | 3882 | |
3280af22 | 3883 | cv = PL_compcv = (CV*)NEWSV(1104,0); |
fa83b5b6 | 3884 | sv_upgrade((SV *)cv, SvTYPE(proto)); |
a5f75d66 | 3885 | CvCLONED_on(cv); |
5f05dabc | 3886 | if (CvANON(proto)) |
3887 | CvANON_on(cv); | |
748a9306 | 3888 | |
11343788 | 3889 | #ifdef USE_THREADS |
12ca11f6 | 3890 | New(666, CvMUTEXP(cv), 1, perl_mutex); |
11343788 | 3891 | MUTEX_INIT(CvMUTEXP(cv)); |
11343788 MB |
3892 | CvOWNER(cv) = 0; |
3893 | #endif /* USE_THREADS */ | |
748a9306 | 3894 | CvFILEGV(cv) = CvFILEGV(proto); |
44a8e56a | 3895 | CvGV(cv) = (GV*)SvREFCNT_inc(CvGV(proto)); |
748a9306 LW |
3896 | CvSTASH(cv) = CvSTASH(proto); |
3897 | CvROOT(cv) = CvROOT(proto); | |
3898 | CvSTART(cv) = CvSTART(proto); | |
5f05dabc | 3899 | if (outside) |
3900 | CvOUTSIDE(cv) = (CV*)SvREFCNT_inc(outside); | |
748a9306 | 3901 | |
68dc0745 | 3902 | if (SvPOK(proto)) |
3903 | sv_setpvn((SV*)cv, SvPVX(proto), SvCUR(proto)); | |
3904 | ||
3280af22 | 3905 | PL_comppad_name = newAV(); |
46fc3d4c | 3906 | for (ix = fname; ix >= 0; ix--) |
3280af22 | 3907 | av_store(PL_comppad_name, ix, SvREFCNT_inc(pname[ix])); |
748a9306 | 3908 | |
3280af22 | 3909 | PL_comppad = newAV(); |
748a9306 LW |
3910 | |
3911 | comppadlist = newAV(); | |
3912 | AvREAL_off(comppadlist); | |
3280af22 NIS |
3913 | av_store(comppadlist, 0, (SV*)PL_comppad_name); |
3914 | av_store(comppadlist, 1, (SV*)PL_comppad); | |
748a9306 | 3915 | CvPADLIST(cv) = comppadlist; |
3280af22 NIS |
3916 | av_fill(PL_comppad, AvFILLp(protopad)); |
3917 | PL_curpad = AvARRAY(PL_comppad); | |
748a9306 LW |
3918 | |
3919 | av = newAV(); /* will be @_ */ | |
3920 | av_extend(av, 0); | |
3280af22 | 3921 | av_store(PL_comppad, 0, (SV*)av); |
748a9306 LW |
3922 | AvFLAGS(av) = AVf_REIFY; |
3923 | ||
9607fc9c | 3924 | for (ix = fpad; ix > 0; ix--) { |
3925 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; | |
3280af22 | 3926 | if (namesv && namesv != &PL_sv_undef) { |
aa689395 | 3927 | char *name = SvPVX(namesv); /* XXX */ |
3928 | if (SvFLAGS(namesv) & SVf_FAKE) { /* lexical from outside? */ | |
3929 | I32 off = pad_findlex(name, ix, SvIVX(namesv), | |
2680586e | 3930 | CvOUTSIDE(cv), cxstack_ix, 0, 0); |
5f05dabc | 3931 | if (!off) |
3280af22 | 3932 | PL_curpad[ix] = SvREFCNT_inc(ppad[ix]); |
5f05dabc | 3933 | else if (off != ix) |
cea2e8a9 | 3934 | Perl_croak(aTHX_ "panic: cv_clone: %s", name); |
748a9306 LW |
3935 | } |
3936 | else { /* our own lexical */ | |
aa689395 | 3937 | SV* sv; |
5f05dabc | 3938 | if (*name == '&') { |
3939 | /* anon code -- we'll come back for it */ | |
3940 | sv = SvREFCNT_inc(ppad[ix]); | |
3941 | } | |
3942 | else if (*name == '@') | |
3943 | sv = (SV*)newAV(); | |
748a9306 | 3944 | else if (*name == '%') |
5f05dabc | 3945 | sv = (SV*)newHV(); |
748a9306 | 3946 | else |
5f05dabc | 3947 | sv = NEWSV(0,0); |
3948 | if (!SvPADBUSY(sv)) | |
3949 | SvPADMY_on(sv); | |
3280af22 | 3950 | PL_curpad[ix] = sv; |
748a9306 LW |
3951 | } |
3952 | } | |
3953 | else { | |
aa689395 | 3954 | SV* sv = NEWSV(0,0); |
748a9306 | 3955 | SvPADTMP_on(sv); |
3280af22 | 3956 | PL_curpad[ix] = sv; |
748a9306 LW |
3957 | } |
3958 | } | |
3959 | ||
5f05dabc | 3960 | /* Now that vars are all in place, clone nested closures. */ |
3961 | ||
9607fc9c | 3962 | for (ix = fpad; ix > 0; ix--) { |
3963 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; | |
aa689395 | 3964 | if (namesv |
3280af22 | 3965 | && namesv != &PL_sv_undef |
aa689395 | 3966 | && !(SvFLAGS(namesv) & SVf_FAKE) |
3967 | && *SvPVX(namesv) == '&' | |
5f05dabc | 3968 | && CvCLONE(ppad[ix])) |
3969 | { | |
3970 | CV *kid = cv_clone2((CV*)ppad[ix], cv); | |
3971 | SvREFCNT_dec(ppad[ix]); | |
3972 | CvCLONE_on(kid); | |
3973 | SvPADMY_on(kid); | |
3280af22 | 3974 | PL_curpad[ix] = (SV*)kid; |
748a9306 LW |
3975 | } |
3976 | } | |
3977 | ||
5f05dabc | 3978 | #ifdef DEBUG_CLOSURES |
ab50184a CS |
3979 | PerlIO_printf(Perl_debug_log, "Cloned inside:\n"); |
3980 | cv_dump(outside); | |
3981 | PerlIO_printf(Perl_debug_log, " from:\n"); | |
5f05dabc | 3982 | cv_dump(proto); |
ab50184a | 3983 | PerlIO_printf(Perl_debug_log, " to:\n"); |
5f05dabc | 3984 | cv_dump(cv); |
3985 | #endif | |
3986 | ||
748a9306 LW |
3987 | LEAVE; |
3988 | return cv; | |
3989 | } | |
3990 | ||
3991 | CV * | |
864dbfa3 | 3992 | Perl_cv_clone(pTHX_ CV *proto) |
5f05dabc | 3993 | { |
b099ddc0 GS |
3994 | CV *cv; |
3995 | MUTEX_LOCK(&PL_cred_mutex); /* XXX create separate mutex */ | |
3996 | cv = cv_clone2(proto, CvOUTSIDE(proto)); | |
3997 | MUTEX_UNLOCK(&PL_cred_mutex); /* XXX create separate mutex */ | |
3998 | return cv; | |
5f05dabc | 3999 | } |
4000 | ||
3fe9a6f1 | 4001 | void |
864dbfa3 | 4002 | Perl_cv_ckproto(pTHX_ CV *cv, GV *gv, char *p) |
3fe9a6f1 | 4003 | { |
0453d815 PM |
4004 | dTHR; |
4005 | ||
f248d071 | 4006 | if (((!p != !SvPOK(cv)) || (p && strNE(p, SvPVX(cv)))) && ckWARN_d(WARN_UNSAFE)) { |
46fc3d4c | 4007 | SV* msg = sv_newmortal(); |
3fe9a6f1 | 4008 | SV* name = Nullsv; |
4009 | ||
4010 | if (gv) | |
46fc3d4c | 4011 | gv_efullname3(name = sv_newmortal(), gv, Nullch); |
4012 | sv_setpv(msg, "Prototype mismatch:"); | |
4013 | if (name) | |
cea2e8a9 | 4014 | Perl_sv_catpvf(aTHX_ msg, " sub %_", name); |
3fe9a6f1 | 4015 | if (SvPOK(cv)) |
cea2e8a9 | 4016 | Perl_sv_catpvf(aTHX_ msg, " (%s)", SvPVX(cv)); |
46fc3d4c | 4017 | sv_catpv(msg, " vs "); |
4018 | if (p) | |
cea2e8a9 | 4019 | Perl_sv_catpvf(aTHX_ msg, "(%s)", p); |
46fc3d4c | 4020 | else |
4021 | sv_catpv(msg, "none"); | |
0453d815 | 4022 | Perl_warner(aTHX_ WARN_UNSAFE, "%_", msg); |
3fe9a6f1 | 4023 | } |
4024 | } | |
4025 | ||
760ac839 | 4026 | SV * |
864dbfa3 | 4027 | Perl_cv_const_sv(pTHX_ CV *cv) |
760ac839 | 4028 | { |
54310121 | 4029 | if (!cv || !SvPOK(cv) || SvCUR(cv)) |
4030 | return Nullsv; | |
fe5e78ed GS |
4031 | return op_const_sv(CvSTART(cv), cv); |
4032 | } | |
760ac839 | 4033 | |
fe5e78ed | 4034 | SV * |
864dbfa3 | 4035 | Perl_op_const_sv(pTHX_ OP *o, CV *cv) |
fe5e78ed GS |
4036 | { |
4037 | SV *sv = Nullsv; | |
4038 | ||
4039 | if(!o) | |
4040 | return Nullsv; | |
4041 | ||
4042 | if(o->op_type == OP_LINESEQ && cLISTOPo->op_first) | |
4043 | o = cLISTOPo->op_first->op_sibling; | |
4044 | ||
4045 | for (; o; o = o->op_next) { | |
54310121 | 4046 | OPCODE type = o->op_type; |
fe5e78ed | 4047 | |
acb36ea4 | 4048 | if (sv && o->op_next == o) |
fe5e78ed | 4049 | return sv; |
54310121 | 4050 | if (type == OP_NEXTSTATE || type == OP_NULL || type == OP_PUSHMARK) |
4051 | continue; | |
4052 | if (type == OP_LEAVESUB || type == OP_RETURN) | |
4053 | break; | |
4054 | if (sv) | |
4055 | return Nullsv; | |
4056 | if (type == OP_CONST) | |
5dc0d613 | 4057 | sv = cSVOPo->op_sv; |
fe5e78ed | 4058 | else if (type == OP_PADSV && cv) { |
e858de61 MB |
4059 | AV* padav = (AV*)(AvARRAY(CvPADLIST(cv))[1]); |
4060 | sv = padav ? AvARRAY(padav)[o->op_targ] : Nullsv; | |
5aabfad6 | 4061 | if (!sv || (!SvREADONLY(sv) && SvREFCNT(sv) > 1)) |
54310121 | 4062 | return Nullsv; |
760ac839 | 4063 | } |
54310121 | 4064 | else |
4065 | return Nullsv; | |
760ac839 | 4066 | } |
5aabfad6 | 4067 | if (sv) |
4068 | SvREADONLY_on(sv); | |
760ac839 LW |
4069 | return sv; |
4070 | } | |
4071 | ||
09bef843 SB |
4072 | void |
4073 | Perl_newMYSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, OP *block) | |
4074 | { | |
4075 | if (o) | |
4076 | SAVEFREEOP(o); | |
4077 | if (proto) | |
4078 | SAVEFREEOP(proto); | |
4079 | if (attrs) | |
4080 | SAVEFREEOP(attrs); | |
4081 | if (block) | |
4082 | SAVEFREEOP(block); | |
4083 | Perl_croak(aTHX_ "\"my sub\" not yet implemented"); | |
4084 | } | |
4085 | ||
748a9306 | 4086 | CV * |
864dbfa3 | 4087 | Perl_newSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *block) |
79072805 | 4088 | { |
09bef843 SB |
4089 | return Perl_newATTRSUB(aTHX_ floor, o, proto, Nullop, block); |
4090 | } | |
4091 | ||
4092 | CV * | |
4093 | Perl_newATTRSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, OP *block) | |
4094 | { | |
11343788 | 4095 | dTHR; |
2d8e6c8d GS |
4096 | STRLEN n_a; |
4097 | char *name = o ? SvPVx(cSVOPo->op_sv, n_a) : Nullch; | |
55d729e4 | 4098 | GV *gv = gv_fetchpv(name ? name : "__ANON__", |
09bef843 SB |
4099 | GV_ADDMULTI | ((block || attrs) ? 0 : GV_NOINIT), |
4100 | SVt_PVCV); | |
2d8e6c8d | 4101 | char *ps = proto ? SvPVx(((SVOP*)proto)->op_sv, n_a) : Nullch; |
a2008d6d | 4102 | register CV *cv=0; |
a0d0e21e | 4103 | I32 ix; |
79072805 | 4104 | |
11343788 | 4105 | if (o) |
5dc0d613 | 4106 | SAVEFREEOP(o); |
3fe9a6f1 | 4107 | if (proto) |
4108 | SAVEFREEOP(proto); | |
09bef843 SB |
4109 | if (attrs) |
4110 | SAVEFREEOP(attrs); | |
3fe9a6f1 | 4111 | |
09bef843 | 4112 | if (SvTYPE(gv) != SVt_PVGV) { /* Maybe prototype now, and had at |
55d729e4 GS |
4113 | maximum a prototype before. */ |
4114 | if (SvTYPE(gv) > SVt_NULL) { | |
0453d815 | 4115 | if (!SvPOK((SV*)gv) && !(SvIOK((SV*)gv) && SvIVX((SV*)gv) == -1) |
f248d071 GS |
4116 | && ckWARN_d(WARN_UNSAFE)) |
4117 | { | |
0453d815 | 4118 | Perl_warner(aTHX_ WARN_UNSAFE, "Runaway prototype"); |
f248d071 | 4119 | } |
55d729e4 GS |
4120 | cv_ckproto((CV*)gv, NULL, ps); |
4121 | } | |
4122 | if (ps) | |
4123 | sv_setpv((SV*)gv, ps); | |
4124 | else | |
4125 | sv_setiv((SV*)gv, -1); | |
3280af22 NIS |
4126 | SvREFCNT_dec(PL_compcv); |
4127 | cv = PL_compcv = NULL; | |
4128 | PL_sub_generation++; | |
55d729e4 GS |
4129 | goto noblock; |
4130 | } | |
4131 | ||
68dc0745 | 4132 | if (!name || GvCVGEN(gv)) |
4133 | cv = Nullcv; | |
4134 | else if (cv = GvCV(gv)) { | |
3fe9a6f1 | 4135 | cv_ckproto(cv, gv, ps); |
68dc0745 | 4136 | /* already defined (or promised)? */ |
4137 | if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
4138 | SV* const_sv; | |
fe5e78ed | 4139 | bool const_changed = TRUE; |
09bef843 | 4140 | if (!block && !attrs) { |
aa689395 | 4141 | /* just a "sub foo;" when &foo is already defined */ |
3280af22 | 4142 | SAVEFREESV(PL_compcv); |
aa689395 | 4143 | goto done; |
4144 | } | |
7bac28a0 | 4145 | /* ahem, death to those who redefine active sort subs */ |
3280af22 | 4146 | if (PL_curstackinfo->si_type == PERLSI_SORT && PL_sortcop == CvSTART(cv)) |
cea2e8a9 | 4147 | Perl_croak(aTHX_ "Can't redefine active sort subroutine %s", name); |
09bef843 SB |
4148 | if (!block) |
4149 | goto withattrs; | |
fe5e78ed GS |
4150 | if(const_sv = cv_const_sv(cv)) |
4151 | const_changed = sv_cmp(const_sv, op_const_sv(block, Nullcv)); | |
599cee73 PM |
4152 | if ((const_sv && const_changed) || ckWARN(WARN_REDEFINE) |
4153 | && !(CvGV(cv) && GvSTASH(CvGV(cv)) | |
2f34f9d4 IZ |
4154 | && HvNAME(GvSTASH(CvGV(cv))) |
4155 | && strEQ(HvNAME(GvSTASH(CvGV(cv))), | |
4156 | "autouse"))) { | |
3280af22 NIS |
4157 | line_t oldline = PL_curcop->cop_line; |
4158 | PL_curcop->cop_line = PL_copline; | |
cea2e8a9 | 4159 | Perl_warner(aTHX_ WARN_REDEFINE, |
599cee73 | 4160 | const_sv ? "Constant subroutine %s redefined" |
09bef843 | 4161 | : "Subroutine %s redefined", name); |
3280af22 | 4162 | PL_curcop->cop_line = oldline; |
79072805 | 4163 | } |
8990e307 | 4164 | SvREFCNT_dec(cv); |
68dc0745 | 4165 | cv = Nullcv; |
79072805 LW |
4166 | } |
4167 | } | |
09bef843 SB |
4168 | withattrs: |
4169 | if (attrs) { | |
4170 | HV *stash; | |
4171 | SV *rcv; | |
4172 | ||
4173 | /* Need to do a C<use attributes $stash_of_cv,\&cv,@attrs> | |
4174 | * before we clobber PL_compcv. | |
4175 | */ | |
4176 | if (cv && !block) { | |
4177 | rcv = (SV*)cv; | |
4178 | if (CvGV(cv) && GvSTASH(CvGV(cv)) && HvNAME(GvSTASH(CvGV(cv)))) | |
4179 | stash = GvSTASH(CvGV(cv)); | |
4180 | else if (CvSTASH(cv) && HvNAME(CvSTASH(cv))) | |
4181 | stash = CvSTASH(cv); | |
4182 | else | |
4183 | stash = PL_curstash; | |
4184 | } | |
4185 | else { | |
4186 | /* possibly about to re-define existing subr -- ignore old cv */ | |
4187 | rcv = (SV*)PL_compcv; | |
4188 | if (name && GvSTASH(gv) && HvNAME(GvSTASH(gv))) | |
4189 | stash = GvSTASH(gv); | |
4190 | else | |
4191 | stash = PL_curstash; | |
4192 | } | |
4193 | apply_attrs(stash, rcv, attrs); | |
4194 | } | |
a0d0e21e | 4195 | if (cv) { /* must reuse cv if autoloaded */ |
09bef843 SB |
4196 | if (!block) { |
4197 | /* got here with just attrs -- work done, so bug out */ | |
4198 | SAVEFREESV(PL_compcv); | |
4199 | goto done; | |
4200 | } | |
4633a7c4 | 4201 | cv_undef(cv); |
3280af22 NIS |
4202 | CvFLAGS(cv) = CvFLAGS(PL_compcv); |
4203 | CvOUTSIDE(cv) = CvOUTSIDE(PL_compcv); | |
4204 | CvOUTSIDE(PL_compcv) = 0; | |
4205 | CvPADLIST(cv) = CvPADLIST(PL_compcv); | |
4206 | CvPADLIST(PL_compcv) = 0; | |
4207 | if (SvREFCNT(PL_compcv) > 1) /* XXX Make closures transit through stub. */ | |
4208 | CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc((SV*)cv); | |
4209 | SvREFCNT_dec(PL_compcv); | |
a0d0e21e LW |
4210 | } |
4211 | else { | |
3280af22 | 4212 | cv = PL_compcv; |
44a8e56a | 4213 | if (name) { |
4214 | GvCV(gv) = cv; | |
4215 | GvCVGEN(gv) = 0; | |
3280af22 | 4216 | PL_sub_generation++; |
44a8e56a | 4217 | } |
a0d0e21e | 4218 | } |
44a8e56a | 4219 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
3280af22 NIS |
4220 | CvFILEGV(cv) = PL_curcop->cop_filegv; |
4221 | CvSTASH(cv) = PL_curstash; | |
11343788 MB |
4222 | #ifdef USE_THREADS |
4223 | CvOWNER(cv) = 0; | |
1cfa4ec7 | 4224 | if (!CvMUTEXP(cv)) { |
f6aaf501 | 4225 | New(666, CvMUTEXP(cv), 1, perl_mutex); |
1cfa4ec7 GS |
4226 | MUTEX_INIT(CvMUTEXP(cv)); |
4227 | } | |
11343788 | 4228 | #endif /* USE_THREADS */ |
8990e307 | 4229 | |
3fe9a6f1 | 4230 | if (ps) |
4231 | sv_setpv((SV*)cv, ps); | |
4633a7c4 | 4232 | |
3280af22 | 4233 | if (PL_error_count) { |
c07a80fd | 4234 | op_free(block); |
4235 | block = Nullop; | |
68dc0745 | 4236 | if (name) { |
4237 | char *s = strrchr(name, ':'); | |
4238 | s = s ? s+1 : name; | |
6d4c2119 CS |
4239 | if (strEQ(s, "BEGIN")) { |
4240 | char *not_safe = | |
4241 | "BEGIN not safe after errors--compilation aborted"; | |
faef0170 | 4242 | if (PL_in_eval & EVAL_KEEPERR) |
cea2e8a9 | 4243 | Perl_croak(aTHX_ not_safe); |
6d4c2119 CS |
4244 | else { |
4245 | /* force display of errors found but not reported */ | |
38a03e6e | 4246 | sv_catpv(ERRSV, not_safe); |
cea2e8a9 | 4247 | Perl_croak(aTHX_ "%s", SvPVx(ERRSV, n_a)); |
6d4c2119 CS |
4248 | } |
4249 | } | |
68dc0745 | 4250 | } |
c07a80fd | 4251 | } |
a0d0e21e | 4252 | if (!block) { |
55d729e4 | 4253 | noblock: |
3280af22 | 4254 | PL_copline = NOLINE; |
a0d0e21e LW |
4255 | LEAVE_SCOPE(floor); |
4256 | return cv; | |
4257 | } | |
4258 | ||
3280af22 NIS |
4259 | if (AvFILLp(PL_comppad_name) < AvFILLp(PL_comppad)) |
4260 | av_store(PL_comppad_name, AvFILLp(PL_comppad), Nullsv); | |
a0d0e21e | 4261 | |
54310121 | 4262 | if (CvCLONE(cv)) { |
3280af22 NIS |
4263 | SV **namep = AvARRAY(PL_comppad_name); |
4264 | for (ix = AvFILLp(PL_comppad); ix > 0; ix--) { | |
54310121 | 4265 | SV *namesv; |
4266 | ||
3280af22 | 4267 | if (SvIMMORTAL(PL_curpad[ix])) |
54310121 | 4268 | continue; |
4269 | /* | |
4270 | * The only things that a clonable function needs in its | |
4271 | * pad are references to outer lexicals and anonymous subs. | |
4272 | * The rest are created anew during cloning. | |
4273 | */ | |
4274 | if (!((namesv = namep[ix]) != Nullsv && | |
3280af22 | 4275 | namesv != &PL_sv_undef && |
54310121 | 4276 | (SvFAKE(namesv) || |
4277 | *SvPVX(namesv) == '&'))) | |
4278 | { | |
3280af22 NIS |
4279 | SvREFCNT_dec(PL_curpad[ix]); |
4280 | PL_curpad[ix] = Nullsv; | |
54310121 | 4281 | } |
4282 | } | |
a0d0e21e | 4283 | } |
54310121 | 4284 | else { |
4285 | AV *av = newAV(); /* Will be @_ */ | |
4286 | av_extend(av, 0); | |
3280af22 | 4287 | av_store(PL_comppad, 0, (SV*)av); |
54310121 | 4288 | AvFLAGS(av) = AVf_REIFY; |
79072805 | 4289 | |
3280af22 NIS |
4290 | for (ix = AvFILLp(PL_comppad); ix > 0; ix--) { |
4291 | if (SvIMMORTAL(PL_curpad[ix])) | |
54310121 | 4292 | continue; |
3280af22 NIS |
4293 | if (!SvPADMY(PL_curpad[ix])) |
4294 | SvPADTMP_on(PL_curpad[ix]); | |
54310121 | 4295 | } |
4296 | } | |
79072805 | 4297 | |
cd06dffe GS |
4298 | if(CvLVALUE(cv)) { |
4299 | CvROOT(cv) = newUNOP(OP_LEAVESUBLV, 0, scalarseq(block)); | |
4300 | } | |
4301 | else { | |
4302 | CvROOT(cv) = newUNOP(OP_LEAVESUB, 0, scalarseq(block)); | |
4303 | } | |
79072805 LW |
4304 | CvSTART(cv) = LINKLIST(CvROOT(cv)); |
4305 | CvROOT(cv)->op_next = 0; | |
4306 | peep(CvSTART(cv)); | |
93a17b20 | 4307 | |
44a8e56a | 4308 | if (name) { |
4309 | char *s; | |
4310 | ||
3280af22 | 4311 | if (PERLDB_SUBLINE && PL_curstash != PL_debstash) { |
46fc3d4c | 4312 | SV *sv = NEWSV(0,0); |
44a8e56a | 4313 | SV *tmpstr = sv_newmortal(); |
549bb64a | 4314 | GV *db_postponed = gv_fetchpv("DB::postponed", GV_ADDMULTI, SVt_PVHV); |
44a8e56a | 4315 | CV *cv; |
4316 | HV *hv; | |
4317 | ||
cea2e8a9 | 4318 | Perl_sv_setpvf(aTHX_ sv, "%_:%ld-%ld", |
3280af22 NIS |
4319 | GvSV(PL_curcop->cop_filegv), |
4320 | (long)PL_subline, (long)PL_curcop->cop_line); | |
44a8e56a | 4321 | gv_efullname3(tmpstr, gv, Nullch); |
3280af22 | 4322 | hv_store(GvHV(PL_DBsub), SvPVX(tmpstr), SvCUR(tmpstr), sv, 0); |
44a8e56a | 4323 | hv = GvHVn(db_postponed); |
9607fc9c | 4324 | if (HvFILL(hv) > 0 && hv_exists(hv, SvPVX(tmpstr), SvCUR(tmpstr)) |
4325 | && (cv = GvCV(db_postponed))) { | |
44a8e56a | 4326 | dSP; |
924508f0 | 4327 | PUSHMARK(SP); |
44a8e56a | 4328 | XPUSHs(tmpstr); |
4329 | PUTBACK; | |
864dbfa3 | 4330 | call_sv((SV*)cv, G_DISCARD); |
44a8e56a | 4331 | } |
4332 | } | |
79072805 | 4333 | |
44a8e56a | 4334 | if ((s = strrchr(name,':'))) |
28757baa | 4335 | s++; |
4336 | else | |
4337 | s = name; | |
68dc0745 | 4338 | if (strEQ(s, "BEGIN")) { |
3280af22 | 4339 | I32 oldscope = PL_scopestack_ix; |
28757baa | 4340 | ENTER; |
3280af22 NIS |
4341 | SAVESPTR(PL_compiling.cop_filegv); |
4342 | SAVEI16(PL_compiling.cop_line); | |
4343 | save_svref(&PL_rs); | |
4344 | sv_setsv(PL_rs, PL_nrs); | |
28757baa | 4345 | |
3280af22 NIS |
4346 | if (!PL_beginav) |
4347 | PL_beginav = newAV(); | |
28757baa | 4348 | DEBUG_x( dump_sub(gv) ); |
3280af22 | 4349 | av_push(PL_beginav, (SV *)cv); |
28757baa | 4350 | GvCV(gv) = 0; |
3280af22 | 4351 | call_list(oldscope, PL_beginav); |
a6006777 | 4352 | |
3280af22 | 4353 | PL_curcop = &PL_compiling; |
a0ed51b3 | 4354 | PL_compiling.op_private = PL_hints; |
28757baa | 4355 | LEAVE; |
4356 | } | |
3280af22 NIS |
4357 | else if (strEQ(s, "END") && !PL_error_count) { |
4358 | if (!PL_endav) | |
4359 | PL_endav = newAV(); | |
4360 | av_unshift(PL_endav, 1); | |
4361 | av_store(PL_endav, 0, (SV *)cv); | |
28757baa | 4362 | GvCV(gv) = 0; |
4363 | } | |
3280af22 NIS |
4364 | else if (strEQ(s, "INIT") && !PL_error_count) { |
4365 | if (!PL_initav) | |
4366 | PL_initav = newAV(); | |
4367 | av_push(PL_initav, SvREFCNT_inc(cv)); | |
b7aad4fe | 4368 | GvCV(gv) = 0; |
ae77835f | 4369 | } |
79072805 | 4370 | } |
a6006777 | 4371 | |
aa689395 | 4372 | done: |
3280af22 | 4373 | PL_copline = NOLINE; |
8990e307 | 4374 | LEAVE_SCOPE(floor); |
a0d0e21e | 4375 | return cv; |
79072805 LW |
4376 | } |
4377 | ||
b099ddc0 | 4378 | /* XXX unsafe for threads if eval_owner isn't held */ |
5476c433 | 4379 | void |
864dbfa3 | 4380 | Perl_newCONSTSUB(pTHX_ HV *stash, char *name, SV *sv) |
5476c433 JD |
4381 | { |
4382 | dTHR; | |
3280af22 NIS |
4383 | U32 oldhints = PL_hints; |
4384 | HV *old_cop_stash = PL_curcop->cop_stash; | |
4385 | HV *old_curstash = PL_curstash; | |
4386 | line_t oldline = PL_curcop->cop_line; | |
4387 | PL_curcop->cop_line = PL_copline; | |
5476c433 | 4388 | |
3280af22 | 4389 | PL_hints &= ~HINT_BLOCK_SCOPE; |
5476c433 | 4390 | if(stash) |
3280af22 | 4391 | PL_curstash = PL_curcop->cop_stash = stash; |
5476c433 | 4392 | |
09bef843 | 4393 | newATTRSUB( |
be24f278 | 4394 | start_subparse(FALSE, 0), |
5476c433 | 4395 | newSVOP(OP_CONST, 0, newSVpv(name,0)), |
6b88bc9c | 4396 | newSVOP(OP_CONST, 0, &PL_sv_no), /* SvPV(&PL_sv_no) == "" -- GMB */ |
09bef843 | 4397 | Nullop, |
5476c433 JD |
4398 | newSTATEOP(0, Nullch, newSVOP(OP_CONST, 0, sv)) |
4399 | ); | |
4400 | ||
3280af22 NIS |
4401 | PL_hints = oldhints; |
4402 | PL_curcop->cop_stash = old_cop_stash; | |
4403 | PL_curstash = old_curstash; | |
4404 | PL_curcop->cop_line = oldline; | |
5476c433 JD |
4405 | } |
4406 | ||
57d3b86d | 4407 | CV * |
864dbfa3 | 4408 | Perl_newXS(pTHX_ char *name, XSUBADDR_t subaddr, char *filename) |
a0d0e21e | 4409 | { |
11343788 | 4410 | dTHR; |
44a8e56a | 4411 | GV *gv = gv_fetchpv(name ? name : "__ANON__", GV_ADDMULTI, SVt_PVCV); |
79072805 | 4412 | register CV *cv; |
44a8e56a | 4413 | |
4414 | if (cv = (name ? GvCV(gv) : Nullcv)) { | |
4415 | if (GvCVGEN(gv)) { | |
4416 | /* just a cached method */ | |
4417 | SvREFCNT_dec(cv); | |
4418 | cv = 0; | |
4419 | } | |
4420 | else if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
4421 | /* already defined (or promised) */ | |
599cee73 | 4422 | if (ckWARN(WARN_REDEFINE) && !(CvGV(cv) && GvSTASH(CvGV(cv)) |
2f34f9d4 IZ |
4423 | && HvNAME(GvSTASH(CvGV(cv))) |
4424 | && strEQ(HvNAME(GvSTASH(CvGV(cv))), "autouse"))) { | |
3280af22 | 4425 | line_t oldline = PL_curcop->cop_line; |
51f6edd3 GS |
4426 | if (PL_copline != NOLINE) |
4427 | PL_curcop->cop_line = PL_copline; | |
cea2e8a9 | 4428 | Perl_warner(aTHX_ WARN_REDEFINE, "Subroutine %s redefined",name); |
3280af22 | 4429 | PL_curcop->cop_line = oldline; |
a0d0e21e LW |
4430 | } |
4431 | SvREFCNT_dec(cv); | |
4432 | cv = 0; | |
79072805 | 4433 | } |
79072805 | 4434 | } |
44a8e56a | 4435 | |
4436 | if (cv) /* must reuse cv if autoloaded */ | |
4437 | cv_undef(cv); | |
a0d0e21e LW |
4438 | else { |
4439 | cv = (CV*)NEWSV(1105,0); | |
4440 | sv_upgrade((SV *)cv, SVt_PVCV); | |
44a8e56a | 4441 | if (name) { |
4442 | GvCV(gv) = cv; | |
4443 | GvCVGEN(gv) = 0; | |
3280af22 | 4444 | PL_sub_generation++; |
44a8e56a | 4445 | } |
a0d0e21e | 4446 | } |
5196be3e | 4447 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
11343788 | 4448 | #ifdef USE_THREADS |
12ca11f6 | 4449 | New(666, CvMUTEXP(cv), 1, perl_mutex); |
11343788 | 4450 | MUTEX_INIT(CvMUTEXP(cv)); |
11343788 MB |
4451 | CvOWNER(cv) = 0; |
4452 | #endif /* USE_THREADS */ | |
79072805 | 4453 | CvFILEGV(cv) = gv_fetchfile(filename); |
a0d0e21e | 4454 | CvXSUB(cv) = subaddr; |
44a8e56a | 4455 | |
28757baa | 4456 | if (name) { |
4457 | char *s = strrchr(name,':'); | |
4458 | if (s) | |
4459 | s++; | |
4460 | else | |
4461 | s = name; | |
4462 | if (strEQ(s, "BEGIN")) { | |
3280af22 NIS |
4463 | if (!PL_beginav) |
4464 | PL_beginav = newAV(); | |
4465 | av_push(PL_beginav, (SV *)cv); | |
44a8e56a | 4466 | GvCV(gv) = 0; |
28757baa | 4467 | } |
4468 | else if (strEQ(s, "END")) { | |
3280af22 NIS |
4469 | if (!PL_endav) |
4470 | PL_endav = newAV(); | |
4471 | av_unshift(PL_endav, 1); | |
4472 | av_store(PL_endav, 0, (SV *)cv); | |
44a8e56a | 4473 | GvCV(gv) = 0; |
28757baa | 4474 | } |
7d07dbc2 | 4475 | else if (strEQ(s, "INIT")) { |
3280af22 NIS |
4476 | if (!PL_initav) |
4477 | PL_initav = newAV(); | |
4478 | av_push(PL_initav, (SV *)cv); | |
f8f842e4 | 4479 | GvCV(gv) = 0; |
ae77835f | 4480 | } |
28757baa | 4481 | } |
8990e307 | 4482 | else |
a5f75d66 | 4483 | CvANON_on(cv); |
44a8e56a | 4484 | |
a0d0e21e | 4485 | return cv; |
79072805 LW |
4486 | } |
4487 | ||
4488 | void | |
864dbfa3 | 4489 | Perl_newFORM(pTHX_ I32 floor, OP *o, OP *block) |
79072805 | 4490 | { |
11343788 | 4491 | dTHR; |
79072805 LW |
4492 | register CV *cv; |
4493 | char *name; | |
4494 | GV *gv; | |
a0d0e21e | 4495 | I32 ix; |
2d8e6c8d | 4496 | STRLEN n_a; |
79072805 | 4497 | |
11343788 | 4498 | if (o) |
2d8e6c8d | 4499 | name = SvPVx(cSVOPo->op_sv, n_a); |
79072805 LW |
4500 | else |
4501 | name = "STDOUT"; | |
85e6fe83 | 4502 | gv = gv_fetchpv(name,TRUE, SVt_PVFM); |
a5f75d66 | 4503 | GvMULTI_on(gv); |
79072805 | 4504 | if (cv = GvFORM(gv)) { |
599cee73 | 4505 | if (ckWARN(WARN_REDEFINE)) { |
3280af22 | 4506 | line_t oldline = PL_curcop->cop_line; |
79072805 | 4507 | |
3280af22 | 4508 | PL_curcop->cop_line = PL_copline; |
cea2e8a9 | 4509 | Perl_warner(aTHX_ WARN_REDEFINE, "Format %s redefined",name); |
3280af22 | 4510 | PL_curcop->cop_line = oldline; |
79072805 | 4511 | } |
8990e307 | 4512 | SvREFCNT_dec(cv); |
79072805 | 4513 | } |
3280af22 | 4514 | cv = PL_compcv; |
79072805 | 4515 | GvFORM(gv) = cv; |
44a8e56a | 4516 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
3280af22 | 4517 | CvFILEGV(cv) = PL_curcop->cop_filegv; |
79072805 | 4518 | |
3280af22 NIS |
4519 | for (ix = AvFILLp(PL_comppad); ix > 0; ix--) { |
4520 | if (!SvPADMY(PL_curpad[ix]) && !SvIMMORTAL(PL_curpad[ix])) | |
4521 | SvPADTMP_on(PL_curpad[ix]); | |
a0d0e21e LW |
4522 | } |
4523 | ||
79072805 LW |
4524 | CvROOT(cv) = newUNOP(OP_LEAVEWRITE, 0, scalarseq(block)); |
4525 | CvSTART(cv) = LINKLIST(CvROOT(cv)); | |
4526 | CvROOT(cv)->op_next = 0; | |
4527 | peep(CvSTART(cv)); | |
11343788 | 4528 | op_free(o); |
3280af22 | 4529 | PL_copline = NOLINE; |
8990e307 | 4530 | LEAVE_SCOPE(floor); |
79072805 LW |
4531 | } |
4532 | ||
4533 | OP * | |
864dbfa3 | 4534 | Perl_newANONLIST(pTHX_ OP *o) |
79072805 | 4535 | { |
93a17b20 | 4536 | return newUNOP(OP_REFGEN, 0, |
11343788 | 4537 | mod(list(convert(OP_ANONLIST, 0, o)), OP_REFGEN)); |
79072805 LW |
4538 | } |
4539 | ||
4540 | OP * | |
864dbfa3 | 4541 | Perl_newANONHASH(pTHX_ OP *o) |
79072805 | 4542 | { |
93a17b20 | 4543 | return newUNOP(OP_REFGEN, 0, |
11343788 | 4544 | mod(list(convert(OP_ANONHASH, 0, o)), OP_REFGEN)); |
a0d0e21e LW |
4545 | } |
4546 | ||
4547 | OP * | |
864dbfa3 | 4548 | Perl_newANONSUB(pTHX_ I32 floor, OP *proto, OP *block) |
a0d0e21e | 4549 | { |
09bef843 SB |
4550 | return newANONATTRSUB(floor, proto, Nullop, block); |
4551 | } | |
4552 | ||
4553 | OP * | |
4554 | Perl_newANONATTRSUB(pTHX_ I32 floor, OP *proto, OP *attrs, OP *block) | |
4555 | { | |
a0d0e21e | 4556 | return newUNOP(OP_REFGEN, 0, |
09bef843 SB |
4557 | newSVOP(OP_ANONCODE, 0, |
4558 | (SV*)newATTRSUB(floor, 0, proto, attrs, block))); | |
79072805 LW |
4559 | } |
4560 | ||
4561 | OP * | |
864dbfa3 | 4562 | Perl_oopsAV(pTHX_ OP *o) |
79072805 | 4563 | { |
ed6116ce LW |
4564 | switch (o->op_type) { |
4565 | case OP_PADSV: | |
4566 | o->op_type = OP_PADAV; | |
22c35a8c | 4567 | o->op_ppaddr = PL_ppaddr[OP_PADAV]; |
51e247a3 | 4568 | return ref(o, OP_RV2AV); |
ed6116ce LW |
4569 | |
4570 | case OP_RV2SV: | |
79072805 | 4571 | o->op_type = OP_RV2AV; |
22c35a8c | 4572 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
79072805 | 4573 | ref(o, OP_RV2AV); |
ed6116ce LW |
4574 | break; |
4575 | ||
4576 | default: | |
0453d815 PM |
4577 | if (ckWARN_d(WARN_INTERNAL)) |
4578 | Perl_warner(aTHX_ WARN_INTERNAL, "oops: oopsAV"); | |
ed6116ce LW |
4579 | break; |
4580 | } | |
79072805 LW |
4581 | return o; |
4582 | } | |
4583 | ||
4584 | OP * | |
864dbfa3 | 4585 | Perl_oopsHV(pTHX_ OP *o) |
79072805 | 4586 | { |
0453d815 | 4587 | dTHR; |
0453d815 | 4588 | |
ed6116ce LW |
4589 | switch (o->op_type) { |
4590 | case OP_PADSV: | |
4591 | case OP_PADAV: | |
4592 | o->op_type = OP_PADHV; | |
22c35a8c | 4593 | o->op_ppaddr = PL_ppaddr[OP_PADHV]; |
51e247a3 | 4594 | return ref(o, OP_RV2HV); |
ed6116ce LW |
4595 | |
4596 | case OP_RV2SV: | |
4597 | case OP_RV2AV: | |
79072805 | 4598 | o->op_type = OP_RV2HV; |
22c35a8c | 4599 | o->op_ppaddr = PL_ppaddr[OP_RV2HV]; |
79072805 | 4600 | ref(o, OP_RV2HV); |
ed6116ce LW |
4601 | break; |
4602 | ||
4603 | default: | |
0453d815 PM |
4604 | if (ckWARN_d(WARN_INTERNAL)) |
4605 | Perl_warner(aTHX_ WARN_INTERNAL, "oops: oopsHV"); | |
ed6116ce LW |
4606 | break; |
4607 | } | |
79072805 LW |
4608 | return o; |
4609 | } | |
4610 | ||
4611 | OP * | |
864dbfa3 | 4612 | Perl_newAVREF(pTHX_ OP *o) |
79072805 | 4613 | { |
ed6116ce LW |
4614 | if (o->op_type == OP_PADANY) { |
4615 | o->op_type = OP_PADAV; | |
22c35a8c | 4616 | o->op_ppaddr = PL_ppaddr[OP_PADAV]; |
93a17b20 | 4617 | return o; |
ed6116ce | 4618 | } |
79072805 LW |
4619 | return newUNOP(OP_RV2AV, 0, scalar(o)); |
4620 | } | |
4621 | ||
4622 | OP * | |
864dbfa3 | 4623 | Perl_newGVREF(pTHX_ I32 type, OP *o) |
79072805 | 4624 | { |
82092f1d | 4625 | if (type == OP_MAPSTART || type == OP_GREPSTART || type == OP_SORT) |
a0d0e21e | 4626 | return newUNOP(OP_NULL, 0, o); |
748a9306 | 4627 | return ref(newUNOP(OP_RV2GV, OPf_REF, o), type); |
79072805 LW |
4628 | } |
4629 | ||
4630 | OP * | |
864dbfa3 | 4631 | Perl_newHVREF(pTHX_ OP *o) |
79072805 | 4632 | { |
ed6116ce LW |
4633 | if (o->op_type == OP_PADANY) { |
4634 | o->op_type = OP_PADHV; | |
22c35a8c | 4635 | o->op_ppaddr = PL_ppaddr[OP_PADHV]; |
93a17b20 | 4636 | return o; |
ed6116ce | 4637 | } |
79072805 LW |
4638 | return newUNOP(OP_RV2HV, 0, scalar(o)); |
4639 | } | |
4640 | ||
4641 | OP * | |
864dbfa3 | 4642 | Perl_oopsCV(pTHX_ OP *o) |
79072805 | 4643 | { |
cea2e8a9 | 4644 | Perl_croak(aTHX_ "NOT IMPL LINE %d",__LINE__); |
79072805 LW |
4645 | /* STUB */ |
4646 | return o; | |
4647 | } | |
4648 | ||
4649 | OP * | |
864dbfa3 | 4650 | Perl_newCVREF(pTHX_ I32 flags, OP *o) |
79072805 | 4651 | { |
c07a80fd | 4652 | return newUNOP(OP_RV2CV, flags, scalar(o)); |
79072805 LW |
4653 | } |
4654 | ||
4655 | OP * | |
864dbfa3 | 4656 | Perl_newSVREF(pTHX_ OP *o) |
79072805 | 4657 | { |
ed6116ce LW |
4658 | if (o->op_type == OP_PADANY) { |
4659 | o->op_type = OP_PADSV; | |
22c35a8c | 4660 | o->op_ppaddr = PL_ppaddr[OP_PADSV]; |
93a17b20 | 4661 | return o; |
ed6116ce | 4662 | } |
224a4551 MB |
4663 | else if (o->op_type == OP_THREADSV && !(o->op_flags & OPpDONE_SVREF)) { |
4664 | o->op_flags |= OPpDONE_SVREF; | |
a863c7d1 | 4665 | return o; |
224a4551 | 4666 | } |
79072805 LW |
4667 | return newUNOP(OP_RV2SV, 0, scalar(o)); |
4668 | } | |
4669 | ||
4670 | /* Check routines. */ | |
4671 | ||
4672 | OP * | |
cea2e8a9 | 4673 | Perl_ck_anoncode(pTHX_ OP *o) |
5f05dabc | 4674 | { |
178c6305 CS |
4675 | PADOFFSET ix; |
4676 | SV* name; | |
4677 | ||
4678 | name = NEWSV(1106,0); | |
4679 | sv_upgrade(name, SVt_PVNV); | |
4680 | sv_setpvn(name, "&", 1); | |
4681 | SvIVX(name) = -1; | |
4682 | SvNVX(name) = 1; | |
5dc0d613 | 4683 | ix = pad_alloc(o->op_type, SVs_PADMY); |
3280af22 NIS |
4684 | av_store(PL_comppad_name, ix, name); |
4685 | av_store(PL_comppad, ix, cSVOPo->op_sv); | |
5dc0d613 MB |
4686 | SvPADMY_on(cSVOPo->op_sv); |
4687 | cSVOPo->op_sv = Nullsv; | |
4688 | cSVOPo->op_targ = ix; | |
4689 | return o; | |
5f05dabc | 4690 | } |
4691 | ||
4692 | OP * | |
cea2e8a9 | 4693 | Perl_ck_bitop(pTHX_ OP *o) |
55497cff | 4694 | { |
3280af22 | 4695 | o->op_private = PL_hints; |
5dc0d613 | 4696 | return o; |
55497cff | 4697 | } |
4698 | ||
4699 | OP * | |
cea2e8a9 | 4700 | Perl_ck_concat(pTHX_ OP *o) |
79072805 | 4701 | { |
11343788 MB |
4702 | if (cUNOPo->op_first->op_type == OP_CONCAT) |
4703 | o->op_flags |= OPf_STACKED; | |
4704 | return o; | |
79072805 LW |
4705 | } |
4706 | ||
4707 | OP * | |
cea2e8a9 | 4708 | Perl_ck_spair(pTHX_ OP *o) |
79072805 | 4709 | { |
11343788 | 4710 | if (o->op_flags & OPf_KIDS) { |
79072805 | 4711 | OP* newop; |
a0d0e21e | 4712 | OP* kid; |
5dc0d613 MB |
4713 | OPCODE type = o->op_type; |
4714 | o = modkids(ck_fun(o), type); | |
11343788 | 4715 | kid = cUNOPo->op_first; |
a0d0e21e LW |
4716 | newop = kUNOP->op_first->op_sibling; |
4717 | if (newop && | |
4718 | (newop->op_sibling || | |
22c35a8c | 4719 | !(PL_opargs[newop->op_type] & OA_RETSCALAR) || |
a0d0e21e LW |
4720 | newop->op_type == OP_PADAV || newop->op_type == OP_PADHV || |
4721 | newop->op_type == OP_RV2AV || newop->op_type == OP_RV2HV)) { | |
aeea060c | 4722 | |
11343788 | 4723 | return o; |
a0d0e21e LW |
4724 | } |
4725 | op_free(kUNOP->op_first); | |
4726 | kUNOP->op_first = newop; | |
4727 | } | |
22c35a8c | 4728 | o->op_ppaddr = PL_ppaddr[++o->op_type]; |
11343788 | 4729 | return ck_fun(o); |
a0d0e21e LW |
4730 | } |
4731 | ||
4732 | OP * | |
cea2e8a9 | 4733 | Perl_ck_delete(pTHX_ OP *o) |
a0d0e21e | 4734 | { |
11343788 | 4735 | o = ck_fun(o); |
5dc0d613 | 4736 | o->op_private = 0; |
11343788 MB |
4737 | if (o->op_flags & OPf_KIDS) { |
4738 | OP *kid = cUNOPo->op_first; | |
5f05dabc | 4739 | if (kid->op_type == OP_HSLICE) |
5dc0d613 | 4740 | o->op_private |= OPpSLICE; |
5f05dabc | 4741 | else if (kid->op_type != OP_HELEM) |
cea2e8a9 | 4742 | Perl_croak(aTHX_ "%s argument is not a HASH element or slice", |
22c35a8c | 4743 | PL_op_desc[o->op_type]); |
a0d0e21e | 4744 | null(kid); |
79072805 | 4745 | } |
11343788 | 4746 | return o; |
79072805 LW |
4747 | } |
4748 | ||
4749 | OP * | |
cea2e8a9 | 4750 | Perl_ck_eof(pTHX_ OP *o) |
79072805 | 4751 | { |
11343788 | 4752 | I32 type = o->op_type; |
79072805 | 4753 | |
11343788 MB |
4754 | if (o->op_flags & OPf_KIDS) { |
4755 | if (cLISTOPo->op_first->op_type == OP_STUB) { | |
4756 | op_free(o); | |
4757 | o = newUNOP(type, OPf_SPECIAL, | |
d58bf5aa | 4758 | newGVOP(OP_GV, 0, gv_fetchpv("main::ARGV", TRUE, SVt_PVAV))); |
8990e307 | 4759 | } |
11343788 | 4760 | return ck_fun(o); |
79072805 | 4761 | } |
11343788 | 4762 | return o; |
79072805 LW |
4763 | } |
4764 | ||
4765 | OP * | |
cea2e8a9 | 4766 | Perl_ck_eval(pTHX_ OP *o) |
79072805 | 4767 | { |
3280af22 | 4768 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 MB |
4769 | if (o->op_flags & OPf_KIDS) { |
4770 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 | 4771 | |
93a17b20 | 4772 | if (!kid) { |
11343788 MB |
4773 | o->op_flags &= ~OPf_KIDS; |
4774 | null(o); | |
79072805 LW |
4775 | } |
4776 | else if (kid->op_type == OP_LINESEQ) { | |
4777 | LOGOP *enter; | |
4778 | ||
11343788 MB |
4779 | kid->op_next = o->op_next; |
4780 | cUNOPo->op_first = 0; | |
4781 | op_free(o); | |
79072805 | 4782 | |
b7dc083c | 4783 | NewOp(1101, enter, 1, LOGOP); |
79072805 | 4784 | enter->op_type = OP_ENTERTRY; |
22c35a8c | 4785 | enter->op_ppaddr = PL_ppaddr[OP_ENTERTRY]; |
79072805 LW |
4786 | enter->op_private = 0; |
4787 | ||
4788 | /* establish postfix order */ | |
4789 | enter->op_next = (OP*)enter; | |
4790 | ||
11343788 MB |
4791 | o = prepend_elem(OP_LINESEQ, (OP*)enter, (OP*)kid); |
4792 | o->op_type = OP_LEAVETRY; | |
22c35a8c | 4793 | o->op_ppaddr = PL_ppaddr[OP_LEAVETRY]; |
11343788 MB |
4794 | enter->op_other = o; |
4795 | return o; | |
79072805 | 4796 | } |
c7cc6f1c | 4797 | else |
473986ff | 4798 | scalar((OP*)kid); |
79072805 LW |
4799 | } |
4800 | else { | |
11343788 | 4801 | op_free(o); |
54b9620d | 4802 | o = newUNOP(OP_ENTEREVAL, 0, newDEFSVOP()); |
79072805 | 4803 | } |
3280af22 | 4804 | o->op_targ = (PADOFFSET)PL_hints; |
11343788 | 4805 | return o; |
79072805 LW |
4806 | } |
4807 | ||
4808 | OP * | |
cea2e8a9 | 4809 | Perl_ck_exec(pTHX_ OP *o) |
79072805 LW |
4810 | { |
4811 | OP *kid; | |
11343788 MB |
4812 | if (o->op_flags & OPf_STACKED) { |
4813 | o = ck_fun(o); | |
4814 | kid = cUNOPo->op_first->op_sibling; | |
8990e307 LW |
4815 | if (kid->op_type == OP_RV2GV) |
4816 | null(kid); | |
79072805 | 4817 | } |
463ee0b2 | 4818 | else |
11343788 MB |
4819 | o = listkids(o); |
4820 | return o; | |
79072805 LW |
4821 | } |
4822 | ||
4823 | OP * | |
cea2e8a9 | 4824 | Perl_ck_exists(pTHX_ OP *o) |
5f05dabc | 4825 | { |
5196be3e MB |
4826 | o = ck_fun(o); |
4827 | if (o->op_flags & OPf_KIDS) { | |
4828 | OP *kid = cUNOPo->op_first; | |
5f05dabc | 4829 | if (kid->op_type != OP_HELEM) |
cea2e8a9 | 4830 | Perl_croak(aTHX_ "%s argument is not a HASH element", PL_op_desc[o->op_type]); |
5f05dabc | 4831 | null(kid); |
4832 | } | |
5196be3e | 4833 | return o; |
5f05dabc | 4834 | } |
4835 | ||
22c35a8c | 4836 | #if 0 |
5f05dabc | 4837 | OP * |
cea2e8a9 | 4838 | Perl_ck_gvconst(pTHX_ register OP *o) |
79072805 LW |
4839 | { |
4840 | o = fold_constants(o); | |
4841 | if (o->op_type == OP_CONST) | |
4842 | o->op_type = OP_GV; | |
4843 | return o; | |
4844 | } | |
22c35a8c | 4845 | #endif |
79072805 LW |
4846 | |
4847 | OP * | |
cea2e8a9 | 4848 | Perl_ck_rvconst(pTHX_ register OP *o) |
79072805 | 4849 | { |
11343788 MB |
4850 | dTHR; |
4851 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
85e6fe83 | 4852 | |
3280af22 | 4853 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
79072805 | 4854 | if (kid->op_type == OP_CONST) { |
44a8e56a | 4855 | char *name; |
4856 | int iscv; | |
4857 | GV *gv; | |
779c5bc9 | 4858 | SV *kidsv = kid->op_sv; |
2d8e6c8d | 4859 | STRLEN n_a; |
44a8e56a | 4860 | |
779c5bc9 GS |
4861 | /* Is it a constant from cv_const_sv()? */ |
4862 | if (SvROK(kidsv) && SvREADONLY(kidsv)) { | |
4863 | SV *rsv = SvRV(kidsv); | |
4864 | int svtype = SvTYPE(rsv); | |
4865 | char *badtype = Nullch; | |
4866 | ||
4867 | switch (o->op_type) { | |
4868 | case OP_RV2SV: | |
4869 | if (svtype > SVt_PVMG) | |
4870 | badtype = "a SCALAR"; | |
4871 | break; | |
4872 | case OP_RV2AV: | |
4873 | if (svtype != SVt_PVAV) | |
4874 | badtype = "an ARRAY"; | |
4875 | break; | |
4876 | case OP_RV2HV: | |
4877 | if (svtype != SVt_PVHV) { | |
4878 | if (svtype == SVt_PVAV) { /* pseudohash? */ | |
4879 | SV **ksv = av_fetch((AV*)rsv, 0, FALSE); | |
4880 | if (ksv && SvROK(*ksv) | |
4881 | && SvTYPE(SvRV(*ksv)) == SVt_PVHV) | |
4882 | { | |
4883 | break; | |
4884 | } | |
4885 | } | |
4886 | badtype = "a HASH"; | |
4887 | } | |
4888 | break; | |
4889 | case OP_RV2CV: | |
4890 | if (svtype != SVt_PVCV) | |
4891 | badtype = "a CODE"; | |
4892 | break; | |
4893 | } | |
4894 | if (badtype) | |
cea2e8a9 | 4895 | Perl_croak(aTHX_ "Constant is not %s reference", badtype); |
779c5bc9 GS |
4896 | return o; |
4897 | } | |
2d8e6c8d | 4898 | name = SvPV(kidsv, n_a); |
3280af22 | 4899 | if ((PL_hints & HINT_STRICT_REFS) && (kid->op_private & OPpCONST_BARE)) { |
44a8e56a | 4900 | char *badthing = Nullch; |
5dc0d613 | 4901 | switch (o->op_type) { |
44a8e56a | 4902 | case OP_RV2SV: |
4903 | badthing = "a SCALAR"; | |
4904 | break; | |
4905 | case OP_RV2AV: | |
4906 | badthing = "an ARRAY"; | |
4907 | break; | |
4908 | case OP_RV2HV: | |
4909 | badthing = "a HASH"; | |
4910 | break; | |
4911 | } | |
4912 | if (badthing) | |
cea2e8a9 | 4913 | Perl_croak(aTHX_ |
44a8e56a | 4914 | "Can't use bareword (\"%s\") as %s ref while \"strict refs\" in use", |
4915 | name, badthing); | |
4916 | } | |
93233ece CS |
4917 | /* |
4918 | * This is a little tricky. We only want to add the symbol if we | |
4919 | * didn't add it in the lexer. Otherwise we get duplicate strict | |
4920 | * warnings. But if we didn't add it in the lexer, we must at | |
4921 | * least pretend like we wanted to add it even if it existed before, | |
4922 | * or we get possible typo warnings. OPpCONST_ENTERED says | |
4923 | * whether the lexer already added THIS instance of this symbol. | |
4924 | */ | |
5196be3e | 4925 | iscv = (o->op_type == OP_RV2CV) * 2; |
93233ece | 4926 | do { |
44a8e56a | 4927 | gv = gv_fetchpv(name, |
748a9306 | 4928 | iscv | !(kid->op_private & OPpCONST_ENTERED), |
a0d0e21e LW |
4929 | iscv |
4930 | ? SVt_PVCV | |
11343788 | 4931 | : o->op_type == OP_RV2SV |
a0d0e21e | 4932 | ? SVt_PV |
11343788 | 4933 | : o->op_type == OP_RV2AV |
a0d0e21e | 4934 | ? SVt_PVAV |
11343788 | 4935 | : o->op_type == OP_RV2HV |
a0d0e21e LW |
4936 | ? SVt_PVHV |
4937 | : SVt_PVGV); | |
93233ece CS |
4938 | } while (!gv && !(kid->op_private & OPpCONST_ENTERED) && !iscv++); |
4939 | if (gv) { | |
4940 | kid->op_type = OP_GV; | |
4941 | SvREFCNT_dec(kid->op_sv); | |
4942 | kid->op_sv = SvREFCNT_inc(gv); | |
76cd736e | 4943 | kid->op_ppaddr = PL_ppaddr[OP_GV]; |
a0d0e21e | 4944 | } |
79072805 | 4945 | } |
11343788 | 4946 | return o; |
79072805 LW |
4947 | } |
4948 | ||
4949 | OP * | |
cea2e8a9 | 4950 | Perl_ck_ftst(pTHX_ OP *o) |
79072805 | 4951 | { |
11343788 MB |
4952 | dTHR; |
4953 | I32 type = o->op_type; | |
79072805 | 4954 | |
11343788 MB |
4955 | if (o->op_flags & OPf_REF) |
4956 | return o; | |
79072805 | 4957 | |
108ed793 | 4958 | if (o->op_flags & OPf_KIDS && cUNOPo->op_first->op_type != OP_STUB) { |
11343788 | 4959 | SVOP *kid = (SVOP*)cUNOPo->op_first; |
79072805 LW |
4960 | |
4961 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
2d8e6c8d | 4962 | STRLEN n_a; |
a0d0e21e | 4963 | OP *newop = newGVOP(type, OPf_REF, |
2d8e6c8d | 4964 | gv_fetchpv(SvPVx(kid->op_sv, n_a), TRUE, SVt_PVIO)); |
11343788 | 4965 | op_free(o); |
79072805 LW |
4966 | return newop; |
4967 | } | |
4968 | } | |
4969 | else { | |
11343788 | 4970 | op_free(o); |
79072805 | 4971 | if (type == OP_FTTTY) |
fb73857a | 4972 | return newGVOP(type, OPf_REF, gv_fetchpv("main::STDIN", TRUE, |
85e6fe83 | 4973 | SVt_PVIO)); |
79072805 | 4974 | else |
54b9620d | 4975 | return newUNOP(type, 0, newDEFSVOP()); |
79072805 | 4976 | } |
11343788 | 4977 | return o; |
79072805 LW |
4978 | } |
4979 | ||
4980 | OP * | |
cea2e8a9 | 4981 | Perl_ck_fun(pTHX_ OP *o) |
79072805 | 4982 | { |
11343788 | 4983 | dTHR; |
79072805 LW |
4984 | register OP *kid; |
4985 | OP **tokid; | |
4986 | OP *sibl; | |
4987 | I32 numargs = 0; | |
11343788 | 4988 | int type = o->op_type; |
22c35a8c | 4989 | register I32 oa = PL_opargs[type] >> OASHIFT; |
aeea060c | 4990 | |
11343788 | 4991 | if (o->op_flags & OPf_STACKED) { |
79072805 LW |
4992 | if ((oa & OA_OPTIONAL) && (oa >> 4) && !((oa >> 4) & OA_OPTIONAL)) |
4993 | oa &= ~OA_OPTIONAL; | |
4994 | else | |
11343788 | 4995 | return no_fh_allowed(o); |
79072805 LW |
4996 | } |
4997 | ||
11343788 | 4998 | if (o->op_flags & OPf_KIDS) { |
2d8e6c8d | 4999 | STRLEN n_a; |
11343788 MB |
5000 | tokid = &cLISTOPo->op_first; |
5001 | kid = cLISTOPo->op_first; | |
8990e307 LW |
5002 | if (kid->op_type == OP_PUSHMARK || |
5003 | kid->op_type == OP_NULL && kid->op_targ == OP_PUSHMARK) | |
5004 | { | |
79072805 LW |
5005 | tokid = &kid->op_sibling; |
5006 | kid = kid->op_sibling; | |
5007 | } | |
22c35a8c | 5008 | if (!kid && PL_opargs[type] & OA_DEFGV) |
54b9620d | 5009 | *tokid = kid = newDEFSVOP(); |
79072805 LW |
5010 | |
5011 | while (oa && kid) { | |
5012 | numargs++; | |
5013 | sibl = kid->op_sibling; | |
5014 | switch (oa & 7) { | |
5015 | case OA_SCALAR: | |
62c18ce2 GS |
5016 | /* list seen where single (scalar) arg expected? */ |
5017 | if (numargs == 1 && !(oa >> 4) | |
5018 | && kid->op_type == OP_LIST && type != OP_SCALAR) | |
5019 | { | |
5020 | return too_many_arguments(o,PL_op_desc[type]); | |
5021 | } | |
79072805 LW |
5022 | scalar(kid); |
5023 | break; | |
5024 | case OA_LIST: | |
5025 | if (oa < 16) { | |
5026 | kid = 0; | |
5027 | continue; | |
5028 | } | |
5029 | else | |
5030 | list(kid); | |
5031 | break; | |
5032 | case OA_AVREF: | |
5033 | if (kid->op_type == OP_CONST && | |
62c18ce2 GS |
5034 | (kid->op_private & OPpCONST_BARE)) |
5035 | { | |
2d8e6c8d | 5036 | char *name = SvPVx(((SVOP*)kid)->op_sv, n_a); |
79072805 | 5037 | OP *newop = newAVREF(newGVOP(OP_GV, 0, |
85e6fe83 | 5038 | gv_fetchpv(name, TRUE, SVt_PVAV) )); |
cf2093f6 | 5039 | #ifdef IV_IS_QUAD |
b9c39e73 | 5040 | if (ckWARN(WARN_SYNTAX)) |
cf2093f6 JH |
5041 | Perl_warner(aTHX_ WARN_SYNTAX, |
5042 | "Array @%s missing the @ in argument %" PERL_PRId64 " of %s()", | |
5043 | name, (IV)numargs, PL_op_desc[type]); | |
5044 | #else | |
b9c39e73 | 5045 | if (ckWARN(WARN_SYNTAX)) |
cea2e8a9 | 5046 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 | 5047 | "Array @%s missing the @ in argument %ld of %s()", |
22c35a8c | 5048 | name, (long)numargs, PL_op_desc[type]); |
cf2093f6 | 5049 | #endif |
79072805 LW |
5050 | op_free(kid); |
5051 | kid = newop; | |
5052 | kid->op_sibling = sibl; | |
5053 | *tokid = kid; | |
5054 | } | |
8990e307 | 5055 | else if (kid->op_type != OP_RV2AV && kid->op_type != OP_PADAV) |
35cd451c | 5056 | bad_type(numargs, "array", PL_op_desc[type], kid); |
a0d0e21e | 5057 | mod(kid, type); |
79072805 LW |
5058 | break; |
5059 | case OA_HVREF: | |
5060 | if (kid->op_type == OP_CONST && | |
62c18ce2 GS |
5061 | (kid->op_private & OPpCONST_BARE)) |
5062 | { | |
2d8e6c8d | 5063 | char *name = SvPVx(((SVOP*)kid)->op_sv, n_a); |
79072805 | 5064 | OP *newop = newHVREF(newGVOP(OP_GV, 0, |
85e6fe83 | 5065 | gv_fetchpv(name, TRUE, SVt_PVHV) )); |
cf2093f6 | 5066 | #ifdef IV_IS_QUAD |
b9c39e73 | 5067 | if (ckWARN(WARN_SYNTAX)) |
cf2093f6 JH |
5068 | Perl_warner(aTHX_ WARN_SYNTAX, |
5069 | "Hash %%%s missing the %% in argument %" PERL_PRId64 " of %s()", | |
5070 | name, (IV)numargs, PL_op_desc[type]); | |
5071 | #else | |
b9c39e73 | 5072 | if (ckWARN(WARN_SYNTAX)) |
cea2e8a9 | 5073 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 | 5074 | "Hash %%%s missing the %% in argument %ld of %s()", |
22c35a8c | 5075 | name, (long)numargs, PL_op_desc[type]); |
cf2093f6 | 5076 | #endif |
79072805 LW |
5077 | op_free(kid); |
5078 | kid = newop; | |
5079 | kid->op_sibling = sibl; | |
5080 | *tokid = kid; | |
5081 | } | |
8990e307 | 5082 | else if (kid->op_type != OP_RV2HV && kid->op_type != OP_PADHV) |
35cd451c | 5083 | bad_type(numargs, "hash", PL_op_desc[type], kid); |
a0d0e21e | 5084 | mod(kid, type); |
79072805 LW |
5085 | break; |
5086 | case OA_CVREF: | |
5087 | { | |
a0d0e21e | 5088 | OP *newop = newUNOP(OP_NULL, 0, kid); |
79072805 LW |
5089 | kid->op_sibling = 0; |
5090 | linklist(kid); | |
5091 | newop->op_next = newop; | |
5092 | kid = newop; | |
5093 | kid->op_sibling = sibl; | |
5094 | *tokid = kid; | |
5095 | } | |
5096 | break; | |
5097 | case OA_FILEREF: | |
c340be78 | 5098 | if (kid->op_type != OP_GV && kid->op_type != OP_RV2GV) { |
79072805 | 5099 | if (kid->op_type == OP_CONST && |
62c18ce2 GS |
5100 | (kid->op_private & OPpCONST_BARE)) |
5101 | { | |
79072805 | 5102 | OP *newop = newGVOP(OP_GV, 0, |
2d8e6c8d | 5103 | gv_fetchpv(SvPVx(((SVOP*)kid)->op_sv, n_a), TRUE, |
85e6fe83 | 5104 | SVt_PVIO) ); |
79072805 LW |
5105 | op_free(kid); |
5106 | kid = newop; | |
5107 | } | |
1ea32a52 GS |
5108 | else if (kid->op_type == OP_READLINE) { |
5109 | /* neophyte patrol: open(<FH>), close(<FH>) etc. */ | |
5110 | bad_type(numargs, "HANDLE", PL_op_desc[o->op_type], kid); | |
5111 | } | |
79072805 | 5112 | else { |
35cd451c | 5113 | I32 flags = OPf_SPECIAL; |
a6c40364 | 5114 | I32 priv = 0; |
35cd451c | 5115 | /* is this op a FH constructor? */ |
853846ea | 5116 | if (is_handle_constructor(o,numargs)) { |
1d8d4d2a | 5117 | flags = 0; |
853846ea NIS |
5118 | /* Set a flag to tell rv2gv to vivify |
5119 | * need to "prove" flag does not mean something | |
5120 | * else already - NI-S 1999/05/07 | |
5121 | */ | |
a6c40364 | 5122 | priv = OPpDEREF; |
1d8d4d2a NIS |
5123 | #if 0 |
5124 | /* Helps with open($array[$n],...) | |
5125 | but is too simplistic - need to do selectively | |
5126 | */ | |
5127 | mod(kid,type); | |
5128 | #endif | |
853846ea | 5129 | } |
79072805 | 5130 | kid->op_sibling = 0; |
35cd451c | 5131 | kid = newUNOP(OP_RV2GV, flags, scalar(kid)); |
a6c40364 GS |
5132 | if (priv) { |
5133 | kid->op_private |= priv; | |
1d8d4d2a | 5134 | } |
79072805 LW |
5135 | } |
5136 | kid->op_sibling = sibl; | |
5137 | *tokid = kid; | |
5138 | } | |
5139 | scalar(kid); | |
5140 | break; | |
5141 | case OA_SCALARREF: | |
a0d0e21e | 5142 | mod(scalar(kid), type); |
79072805 LW |
5143 | break; |
5144 | } | |
5145 | oa >>= 4; | |
5146 | tokid = &kid->op_sibling; | |
5147 | kid = kid->op_sibling; | |
5148 | } | |
11343788 | 5149 | o->op_private |= numargs; |
79072805 | 5150 | if (kid) |
22c35a8c | 5151 | return too_many_arguments(o,PL_op_desc[o->op_type]); |
11343788 | 5152 | listkids(o); |
79072805 | 5153 | } |
22c35a8c | 5154 | else if (PL_opargs[type] & OA_DEFGV) { |
11343788 | 5155 | op_free(o); |
54b9620d | 5156 | return newUNOP(type, 0, newDEFSVOP()); |
a0d0e21e LW |
5157 | } |
5158 | ||
79072805 LW |
5159 | if (oa) { |
5160 | while (oa & OA_OPTIONAL) | |
5161 | oa >>= 4; | |
5162 | if (oa && oa != OA_LIST) | |
22c35a8c | 5163 | return too_few_arguments(o,PL_op_desc[o->op_type]); |
79072805 | 5164 | } |
11343788 | 5165 | return o; |
79072805 LW |
5166 | } |
5167 | ||
5168 | OP * | |
cea2e8a9 | 5169 | Perl_ck_glob(pTHX_ OP *o) |
79072805 | 5170 | { |
fb73857a | 5171 | GV *gv; |
5172 | ||
1f2bfc8a | 5173 | if ((o->op_flags & OPf_KIDS) && !cLISTOPo->op_first->op_sibling) |
54b9620d | 5174 | append_elem(OP_GLOB, o, newDEFSVOP()); |
fb73857a | 5175 | |
5176 | if (!((gv = gv_fetchpv("glob", FALSE, SVt_PVCV)) && GvIMPORTED_CV(gv))) | |
5177 | gv = gv_fetchpv("CORE::GLOBAL::glob", FALSE, SVt_PVCV); | |
b1cb66bf | 5178 | |
5179 | if (gv && GvIMPORTED_CV(gv)) { | |
5196be3e | 5180 | append_elem(OP_GLOB, o, |
80252599 | 5181 | newSVOP(OP_CONST, 0, newSViv(PL_glob_index++))); |
1f2bfc8a | 5182 | o->op_type = OP_LIST; |
22c35a8c | 5183 | o->op_ppaddr = PL_ppaddr[OP_LIST]; |
1f2bfc8a | 5184 | cLISTOPo->op_first->op_type = OP_PUSHMARK; |
22c35a8c | 5185 | cLISTOPo->op_first->op_ppaddr = PL_ppaddr[OP_PUSHMARK]; |
1f2bfc8a | 5186 | o = newUNOP(OP_ENTERSUB, OPf_STACKED, |
aeea060c | 5187 | append_elem(OP_LIST, o, |
1f2bfc8a MB |
5188 | scalar(newUNOP(OP_RV2CV, 0, |
5189 | newGVOP(OP_GV, 0, gv))))); | |
d58bf5aa MB |
5190 | o = newUNOP(OP_NULL, 0, ck_subr(o)); |
5191 | o->op_targ = OP_GLOB; /* hint at what it used to be */ | |
5192 | return o; | |
b1cb66bf | 5193 | } |
5194 | gv = newGVgen("main"); | |
a0d0e21e | 5195 | gv_IOadd(gv); |
11343788 MB |
5196 | append_elem(OP_GLOB, o, newGVOP(OP_GV, 0, gv)); |
5197 | scalarkids(o); | |
5198 | return ck_fun(o); | |
79072805 LW |
5199 | } |
5200 | ||
5201 | OP * | |
cea2e8a9 | 5202 | Perl_ck_grep(pTHX_ OP *o) |
79072805 LW |
5203 | { |
5204 | LOGOP *gwop; | |
5205 | OP *kid; | |
11343788 | 5206 | OPCODE type = o->op_type == OP_GREPSTART ? OP_GREPWHILE : OP_MAPWHILE; |
79072805 | 5207 | |
22c35a8c | 5208 | o->op_ppaddr = PL_ppaddr[OP_GREPSTART]; |
b7dc083c | 5209 | NewOp(1101, gwop, 1, LOGOP); |
aeea060c | 5210 | |
11343788 | 5211 | if (o->op_flags & OPf_STACKED) { |
a0d0e21e | 5212 | OP* k; |
11343788 MB |
5213 | o = ck_sort(o); |
5214 | kid = cLISTOPo->op_first->op_sibling; | |
5215 | for (k = cLISTOPo->op_first->op_sibling->op_next; k; k = k->op_next) { | |
a0d0e21e LW |
5216 | kid = k; |
5217 | } | |
5218 | kid->op_next = (OP*)gwop; | |
11343788 | 5219 | o->op_flags &= ~OPf_STACKED; |
93a17b20 | 5220 | } |
11343788 | 5221 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e LW |
5222 | if (type == OP_MAPWHILE) |
5223 | list(kid); | |
5224 | else | |
5225 | scalar(kid); | |
11343788 | 5226 | o = ck_fun(o); |
3280af22 | 5227 | if (PL_error_count) |
11343788 | 5228 | return o; |
aeea060c | 5229 | kid = cLISTOPo->op_first->op_sibling; |
79072805 | 5230 | if (kid->op_type != OP_NULL) |
cea2e8a9 | 5231 | Perl_croak(aTHX_ "panic: ck_grep"); |
79072805 LW |
5232 | kid = kUNOP->op_first; |
5233 | ||
a0d0e21e | 5234 | gwop->op_type = type; |
22c35a8c | 5235 | gwop->op_ppaddr = PL_ppaddr[type]; |
11343788 | 5236 | gwop->op_first = listkids(o); |
79072805 LW |
5237 | gwop->op_flags |= OPf_KIDS; |
5238 | gwop->op_private = 1; | |
5239 | gwop->op_other = LINKLIST(kid); | |
a0d0e21e | 5240 | gwop->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 LW |
5241 | kid->op_next = (OP*)gwop; |
5242 | ||
11343788 | 5243 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e | 5244 | if (!kid || !kid->op_sibling) |
22c35a8c | 5245 | return too_few_arguments(o,PL_op_desc[o->op_type]); |
a0d0e21e LW |
5246 | for (kid = kid->op_sibling; kid; kid = kid->op_sibling) |
5247 | mod(kid, OP_GREPSTART); | |
5248 | ||
79072805 LW |
5249 | return (OP*)gwop; |
5250 | } | |
5251 | ||
5252 | OP * | |
cea2e8a9 | 5253 | Perl_ck_index(pTHX_ OP *o) |
79072805 | 5254 | { |
11343788 MB |
5255 | if (o->op_flags & OPf_KIDS) { |
5256 | OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
0b71040e LW |
5257 | if (kid) |
5258 | kid = kid->op_sibling; /* get past "big" */ | |
79072805 | 5259 | if (kid && kid->op_type == OP_CONST) |
2779dcf1 | 5260 | fbm_compile(((SVOP*)kid)->op_sv, 0); |
79072805 | 5261 | } |
11343788 | 5262 | return ck_fun(o); |
79072805 LW |
5263 | } |
5264 | ||
5265 | OP * | |
cea2e8a9 | 5266 | Perl_ck_lengthconst(pTHX_ OP *o) |
79072805 LW |
5267 | { |
5268 | /* XXX length optimization goes here */ | |
11343788 | 5269 | return ck_fun(o); |
79072805 LW |
5270 | } |
5271 | ||
5272 | OP * | |
cea2e8a9 | 5273 | Perl_ck_lfun(pTHX_ OP *o) |
79072805 | 5274 | { |
5dc0d613 MB |
5275 | OPCODE type = o->op_type; |
5276 | return modkids(ck_fun(o), type); | |
79072805 LW |
5277 | } |
5278 | ||
5279 | OP * | |
cea2e8a9 | 5280 | Perl_ck_defined(pTHX_ OP *o) /* 19990527 MJD */ |
69794302 | 5281 | { |
20ce7b12 | 5282 | dTHR; |
d0334bed GS |
5283 | if ((o->op_flags & OPf_KIDS) && ckWARN(WARN_DEPRECATED)) { |
5284 | switch (cUNOPo->op_first->op_type) { | |
5285 | case OP_RV2AV: | |
7e291ef1 | 5286 | break; /* Globals via GV can be undef */ |
d0334bed GS |
5287 | case OP_PADAV: |
5288 | case OP_AASSIGN: /* Is this a good idea? */ | |
5289 | Perl_warner(aTHX_ WARN_DEPRECATED, | |
f10b0346 | 5290 | "defined(@array) is deprecated"); |
d0334bed GS |
5291 | Perl_warner(aTHX_ WARN_DEPRECATED, |
5292 | "(Maybe you should just omit the defined()?)\n"); | |
69794302 | 5293 | break; |
d0334bed | 5294 | case OP_RV2HV: |
7e291ef1 | 5295 | break; /* Globals via GV can be undef */ |
d0334bed GS |
5296 | case OP_PADHV: |
5297 | Perl_warner(aTHX_ WARN_DEPRECATED, | |
f10b0346 | 5298 | "defined(%hash) is deprecated"); |
d0334bed GS |
5299 | Perl_warner(aTHX_ WARN_DEPRECATED, |
5300 | "(Maybe you should just omit the defined()?)\n"); | |
5301 | break; | |
5302 | default: | |
5303 | /* no warning */ | |
5304 | break; | |
5305 | } | |
69794302 MJD |
5306 | } |
5307 | return ck_rfun(o); | |
5308 | } | |
5309 | ||
5310 | OP * | |
cea2e8a9 | 5311 | Perl_ck_rfun(pTHX_ OP *o) |
8990e307 | 5312 | { |
5dc0d613 MB |
5313 | OPCODE type = o->op_type; |
5314 | return refkids(ck_fun(o), type); | |
8990e307 LW |
5315 | } |
5316 | ||
5317 | OP * | |
cea2e8a9 | 5318 | Perl_ck_listiob(pTHX_ OP *o) |
79072805 LW |
5319 | { |
5320 | register OP *kid; | |
aeea060c | 5321 | |
11343788 | 5322 | kid = cLISTOPo->op_first; |
79072805 | 5323 | if (!kid) { |
11343788 MB |
5324 | o = force_list(o); |
5325 | kid = cLISTOPo->op_first; | |
79072805 LW |
5326 | } |
5327 | if (kid->op_type == OP_PUSHMARK) | |
5328 | kid = kid->op_sibling; | |
11343788 | 5329 | if (kid && o->op_flags & OPf_STACKED) |
79072805 LW |
5330 | kid = kid->op_sibling; |
5331 | else if (kid && !kid->op_sibling) { /* print HANDLE; */ | |
5332 | if (kid->op_type == OP_CONST && kid->op_private & OPpCONST_BARE) { | |
11343788 | 5333 | o->op_flags |= OPf_STACKED; /* make it a filehandle */ |
748a9306 | 5334 | kid = newUNOP(OP_RV2GV, OPf_REF, scalar(kid)); |
11343788 MB |
5335 | cLISTOPo->op_first->op_sibling = kid; |
5336 | cLISTOPo->op_last = kid; | |
79072805 LW |
5337 | kid = kid->op_sibling; |
5338 | } | |
5339 | } | |
5340 | ||
5341 | if (!kid) | |
54b9620d | 5342 | append_elem(o->op_type, o, newDEFSVOP()); |
79072805 | 5343 | |
5dc0d613 | 5344 | o = listkids(o); |
bbce6d69 | 5345 | |
5dc0d613 | 5346 | o->op_private = 0; |
36477c24 | 5347 | #ifdef USE_LOCALE |
3280af22 | 5348 | if (PL_hints & HINT_LOCALE) |
5dc0d613 | 5349 | o->op_private |= OPpLOCALE; |
bbce6d69 | 5350 | #endif |
5351 | ||
5dc0d613 | 5352 | return o; |
bbce6d69 | 5353 | } |
5354 | ||
5355 | OP * | |
cea2e8a9 | 5356 | Perl_ck_fun_locale(pTHX_ OP *o) |
bbce6d69 | 5357 | { |
5dc0d613 | 5358 | o = ck_fun(o); |
bbce6d69 | 5359 | |
5dc0d613 | 5360 | o->op_private = 0; |
36477c24 | 5361 | #ifdef USE_LOCALE |
3280af22 | 5362 | if (PL_hints & HINT_LOCALE) |
5dc0d613 | 5363 | o->op_private |= OPpLOCALE; |
bbce6d69 | 5364 | #endif |
5365 | ||
5dc0d613 | 5366 | return o; |
bbce6d69 | 5367 | } |
5368 | ||
5369 | OP * | |
b162f9ea IZ |
5370 | Perl_ck_sassign(pTHX_ OP *o) |
5371 | { | |
5372 | OP *kid = cLISTOPo->op_first; | |
5373 | /* has a disposable target? */ | |
5374 | if ((PL_opargs[kid->op_type] & OA_TARGLEX) | |
5375 | && !(kid->op_flags & OPf_STACKED)) | |
5376 | { | |
5377 | OP *kkid = kid->op_sibling; | |
5378 | ||
5379 | /* Can just relocate the target. */ | |
2c2d71f5 JH |
5380 | if (kkid && kkid->op_type == OP_PADSV |
5381 | && !(kkid->op_private & OPpLVAL_INTRO)) | |
5382 | { | |
b162f9ea | 5383 | /* Concat has problems if target is equal to right arg. */ |
3dbf192b IZ |
5384 | if (kid->op_type == OP_CONCAT) { |
5385 | if (kLISTOP->op_first->op_sibling->op_type == OP_PADSV | |
5386 | && kLISTOP->op_first->op_sibling->op_targ == kkid->op_targ) | |
5387 | return o; | |
b162f9ea | 5388 | } |
3dbf192b IZ |
5389 | else if (kid->op_type == OP_JOIN) { |
5390 | /* do_join has problems if the arguments coincide with target. | |
c212fd85 IZ |
5391 | In fact the second argument *can* safely coincide, |
5392 | but ignore=pessimize this rare occasion. */ | |
5393 | OP *arg = kLISTOP->op_first->op_sibling; /* Skip PUSHMARK */ | |
5394 | ||
5395 | while (arg) { | |
5396 | if (arg->op_type == OP_PADSV | |
5397 | && arg->op_targ == kkid->op_targ) | |
5398 | return o; | |
5399 | arg = arg->op_sibling; | |
5400 | } | |
5401 | } | |
3dbf192b IZ |
5402 | else if (kid->op_type == OP_QUOTEMETA) { |
5403 | /* quotemeta has problems if the argument coincides with target. */ | |
5404 | if (kLISTOP->op_first->op_type == OP_PADSV | |
5405 | && kLISTOP->op_first->op_targ == kkid->op_targ) | |
5406 | return o; | |
5407 | } | |
b162f9ea IZ |
5408 | kid->op_targ = kkid->op_targ; |
5409 | /* Now we do not need PADSV and SASSIGN. */ | |
5410 | kid->op_sibling = o->op_sibling; /* NULL */ | |
5411 | cLISTOPo->op_first = NULL; | |
5412 | op_free(o); | |
5413 | op_free(kkid); | |
5414 | kid->op_private |= OPpTARGET_MY; /* Used for context settings */ | |
5415 | return kid; | |
5416 | } | |
5417 | } | |
5418 | return o; | |
5419 | } | |
5420 | ||
5421 | OP * | |
cea2e8a9 | 5422 | Perl_ck_scmp(pTHX_ OP *o) |
bbce6d69 | 5423 | { |
5dc0d613 | 5424 | o->op_private = 0; |
36477c24 | 5425 | #ifdef USE_LOCALE |
3280af22 | 5426 | if (PL_hints & HINT_LOCALE) |
5dc0d613 | 5427 | o->op_private |= OPpLOCALE; |
bbce6d69 | 5428 | #endif |
36477c24 | 5429 | |
5dc0d613 | 5430 | return o; |
79072805 LW |
5431 | } |
5432 | ||
5433 | OP * | |
cea2e8a9 | 5434 | Perl_ck_match(pTHX_ OP *o) |
79072805 | 5435 | { |
5dc0d613 | 5436 | o->op_private |= OPpRUNTIME; |
11343788 | 5437 | return o; |
79072805 LW |
5438 | } |
5439 | ||
5440 | OP * | |
f5d5a27c CS |
5441 | Perl_ck_method(pTHX_ OP *o) |
5442 | { | |
5443 | OP *kid = cUNOPo->op_first; | |
5444 | if (kid->op_type == OP_CONST) { | |
5445 | SV* sv = kSVOP->op_sv; | |
5446 | if (!(strchr(SvPVX(sv), ':') || strchr(SvPVX(sv), '\''))) { | |
5447 | OP *cmop; | |
5448 | sv_upgrade(sv, SVt_PVIV); | |
5449 | SvIOK_on(sv); | |
5450 | PERL_HASH(SvUVX(sv), SvPVX(sv), SvCUR(sv)); | |
5451 | cmop = newSVOP(OP_METHOD_NAMED, 0, sv); | |
5452 | kSVOP->op_sv = Nullsv; | |
5453 | op_free(o); | |
5454 | return cmop; | |
5455 | } | |
5456 | } | |
5457 | return o; | |
5458 | } | |
5459 | ||
5460 | OP * | |
cea2e8a9 | 5461 | Perl_ck_null(pTHX_ OP *o) |
79072805 | 5462 | { |
11343788 | 5463 | return o; |
79072805 LW |
5464 | } |
5465 | ||
5466 | OP * | |
cea2e8a9 | 5467 | Perl_ck_repeat(pTHX_ OP *o) |
79072805 | 5468 | { |
11343788 MB |
5469 | if (cBINOPo->op_first->op_flags & OPf_PARENS) { |
5470 | o->op_private |= OPpREPEAT_DOLIST; | |
5471 | cBINOPo->op_first = force_list(cBINOPo->op_first); | |
79072805 LW |
5472 | } |
5473 | else | |
11343788 MB |
5474 | scalar(o); |
5475 | return o; | |
79072805 LW |
5476 | } |
5477 | ||
5478 | OP * | |
cea2e8a9 | 5479 | Perl_ck_require(pTHX_ OP *o) |
8990e307 | 5480 | { |
11343788 MB |
5481 | if (o->op_flags & OPf_KIDS) { /* Shall we supply missing .pm? */ |
5482 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
8990e307 LW |
5483 | |
5484 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
8990e307 | 5485 | char *s; |
a0d0e21e LW |
5486 | for (s = SvPVX(kid->op_sv); *s; s++) { |
5487 | if (*s == ':' && s[1] == ':') { | |
5488 | *s = '/'; | |
1aef975c | 5489 | Move(s+2, s+1, strlen(s+2)+1, char); |
a0d0e21e LW |
5490 | --SvCUR(kid->op_sv); |
5491 | } | |
8990e307 | 5492 | } |
a0d0e21e | 5493 | sv_catpvn(kid->op_sv, ".pm", 3); |
8990e307 LW |
5494 | } |
5495 | } | |
11343788 | 5496 | return ck_fun(o); |
8990e307 LW |
5497 | } |
5498 | ||
22c35a8c | 5499 | #if 0 |
8990e307 | 5500 | OP * |
cea2e8a9 | 5501 | Perl_ck_retarget(pTHX_ OP *o) |
79072805 | 5502 | { |
cea2e8a9 | 5503 | Perl_croak(aTHX_ "NOT IMPL LINE %d",__LINE__); |
79072805 | 5504 | /* STUB */ |
11343788 | 5505 | return o; |
79072805 | 5506 | } |
22c35a8c | 5507 | #endif |
79072805 LW |
5508 | |
5509 | OP * | |
cea2e8a9 | 5510 | Perl_ck_select(pTHX_ OP *o) |
79072805 | 5511 | { |
c07a80fd | 5512 | OP* kid; |
11343788 MB |
5513 | if (o->op_flags & OPf_KIDS) { |
5514 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
2304df62 | 5515 | if (kid && kid->op_sibling) { |
11343788 | 5516 | o->op_type = OP_SSELECT; |
22c35a8c | 5517 | o->op_ppaddr = PL_ppaddr[OP_SSELECT]; |
11343788 MB |
5518 | o = ck_fun(o); |
5519 | return fold_constants(o); | |
79072805 LW |
5520 | } |
5521 | } | |
11343788 MB |
5522 | o = ck_fun(o); |
5523 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
c07a80fd | 5524 | if (kid && kid->op_type == OP_RV2GV) |
5525 | kid->op_private &= ~HINT_STRICT_REFS; | |
11343788 | 5526 | return o; |
79072805 LW |
5527 | } |
5528 | ||
5529 | OP * | |
cea2e8a9 | 5530 | Perl_ck_shift(pTHX_ OP *o) |
79072805 | 5531 | { |
11343788 | 5532 | I32 type = o->op_type; |
79072805 | 5533 | |
11343788 | 5534 | if (!(o->op_flags & OPf_KIDS)) { |
6d4ff0d2 MB |
5535 | OP *argop; |
5536 | ||
11343788 | 5537 | op_free(o); |
6d4ff0d2 | 5538 | #ifdef USE_THREADS |
533c011a | 5539 | if (!CvUNIQUE(PL_compcv)) { |
6d4ff0d2 | 5540 | argop = newOP(OP_PADAV, OPf_REF); |
6b88bc9c | 5541 | argop->op_targ = 0; /* PL_curpad[0] is @_ */ |
6d4ff0d2 MB |
5542 | } |
5543 | else { | |
5544 | argop = newUNOP(OP_RV2AV, 0, | |
5545 | scalar(newGVOP(OP_GV, 0, | |
5546 | gv_fetchpv("ARGV", TRUE, SVt_PVAV)))); | |
5547 | } | |
5548 | #else | |
5549 | argop = newUNOP(OP_RV2AV, 0, | |
3280af22 NIS |
5550 | scalar(newGVOP(OP_GV, 0, !CvUNIQUE(PL_compcv) ? |
5551 | PL_defgv : gv_fetchpv("ARGV", TRUE, SVt_PVAV)))); | |
6d4ff0d2 MB |
5552 | #endif /* USE_THREADS */ |
5553 | return newUNOP(type, 0, scalar(argop)); | |
79072805 | 5554 | } |
11343788 | 5555 | return scalar(modkids(ck_fun(o), type)); |
79072805 LW |
5556 | } |
5557 | ||
5558 | OP * | |
cea2e8a9 | 5559 | Perl_ck_sort(pTHX_ OP *o) |
79072805 | 5560 | { |
5dc0d613 | 5561 | o->op_private = 0; |
36477c24 | 5562 | #ifdef USE_LOCALE |
3280af22 | 5563 | if (PL_hints & HINT_LOCALE) |
5dc0d613 | 5564 | o->op_private |= OPpLOCALE; |
bbce6d69 | 5565 | #endif |
5566 | ||
9ea6e965 | 5567 | if (o->op_type == OP_SORT && o->op_flags & OPf_STACKED) |
51a19bc0 | 5568 | simplify_sort(o); |
9c007264 | 5569 | if (o->op_flags & OPf_STACKED) { /* may have been cleared */ |
11343788 | 5570 | OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
463ee0b2 | 5571 | OP *k; |
82092f1d | 5572 | kid = kUNOP->op_first; /* get past null */ |
79072805 | 5573 | |
463ee0b2 | 5574 | if (kid->op_type == OP_SCOPE || kid->op_type == OP_LEAVE) { |
79072805 | 5575 | linklist(kid); |
463ee0b2 LW |
5576 | if (kid->op_type == OP_SCOPE) { |
5577 | k = kid->op_next; | |
5578 | kid->op_next = 0; | |
79072805 | 5579 | } |
463ee0b2 | 5580 | else if (kid->op_type == OP_LEAVE) { |
11343788 | 5581 | if (o->op_type == OP_SORT) { |
748a9306 LW |
5582 | null(kid); /* wipe out leave */ |
5583 | kid->op_next = kid; | |
463ee0b2 | 5584 | |
748a9306 LW |
5585 | for (k = kLISTOP->op_first->op_next; k; k = k->op_next) { |
5586 | if (k->op_next == kid) | |
5587 | k->op_next = 0; | |
5588 | } | |
463ee0b2 | 5589 | } |
748a9306 LW |
5590 | else |
5591 | kid->op_next = 0; /* just disconnect the leave */ | |
a0d0e21e | 5592 | k = kLISTOP->op_first; |
463ee0b2 | 5593 | } |
a0d0e21e LW |
5594 | peep(k); |
5595 | ||
11343788 | 5596 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
11343788 | 5597 | if (o->op_type == OP_SORT) |
a0d0e21e LW |
5598 | kid->op_next = kid; |
5599 | else | |
5600 | kid->op_next = k; | |
11343788 | 5601 | o->op_flags |= OPf_SPECIAL; |
79072805 | 5602 | } |
c6e96bcb GS |
5603 | else if (kid->op_type == OP_RV2SV || kid->op_type == OP_PADSV) |
5604 | null(cLISTOPo->op_first->op_sibling); | |
79072805 | 5605 | } |
bbce6d69 | 5606 | |
11343788 | 5607 | return o; |
79072805 | 5608 | } |
bda4119b GS |
5609 | |
5610 | STATIC void | |
cea2e8a9 | 5611 | S_simplify_sort(pTHX_ OP *o) |
9c007264 | 5612 | { |
51a19bc0 | 5613 | dTHR; |
9c007264 JH |
5614 | register OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
5615 | OP *k; | |
5616 | int reversed; | |
5617 | if (!(o->op_flags & OPf_STACKED)) | |
5618 | return; | |
9ea6e965 GS |
5619 | GvMULTI_on(gv_fetchpv("a", TRUE, SVt_PV)); |
5620 | GvMULTI_on(gv_fetchpv("b", TRUE, SVt_PV)); | |
82092f1d | 5621 | kid = kUNOP->op_first; /* get past null */ |
9c007264 JH |
5622 | if (kid->op_type != OP_SCOPE) |
5623 | return; | |
5624 | kid = kLISTOP->op_last; /* get past scope */ | |
5625 | switch(kid->op_type) { | |
5626 | case OP_NCMP: | |
5627 | case OP_I_NCMP: | |
5628 | case OP_SCMP: | |
5629 | break; | |
5630 | default: | |
5631 | return; | |
5632 | } | |
5633 | k = kid; /* remember this node*/ | |
5634 | if (kBINOP->op_first->op_type != OP_RV2SV) | |
5635 | return; | |
5636 | kid = kBINOP->op_first; /* get past cmp */ | |
5637 | if (kUNOP->op_first->op_type != OP_GV) | |
5638 | return; | |
5639 | kid = kUNOP->op_first; /* get past rv2sv */ | |
5640 | if (GvSTASH(kGVOP->op_gv) != PL_curstash) | |
5641 | return; | |
5642 | if (strEQ(GvNAME(kGVOP->op_gv), "a")) | |
5643 | reversed = 0; | |
5644 | else if(strEQ(GvNAME(kGVOP->op_gv), "b")) | |
5645 | reversed = 1; | |
5646 | else | |
5647 | return; | |
5648 | kid = k; /* back to cmp */ | |
5649 | if (kBINOP->op_last->op_type != OP_RV2SV) | |
5650 | return; | |
5651 | kid = kBINOP->op_last; /* down to 2nd arg */ | |
5652 | if (kUNOP->op_first->op_type != OP_GV) | |
5653 | return; | |
5654 | kid = kUNOP->op_first; /* get past rv2sv */ | |
5655 | if (GvSTASH(kGVOP->op_gv) != PL_curstash | |
5656 | || ( reversed | |
5657 | ? strNE(GvNAME(kGVOP->op_gv), "a") | |
5658 | : strNE(GvNAME(kGVOP->op_gv), "b"))) | |
5659 | return; | |
5660 | o->op_flags &= ~(OPf_STACKED | OPf_SPECIAL); | |
5661 | if (reversed) | |
5662 | o->op_private |= OPpSORT_REVERSE; | |
5663 | if (k->op_type == OP_NCMP) | |
5664 | o->op_private |= OPpSORT_NUMERIC; | |
5665 | if (k->op_type == OP_I_NCMP) | |
5666 | o->op_private |= OPpSORT_NUMERIC | OPpSORT_INTEGER; | |
e507f050 SM |
5667 | kid = cLISTOPo->op_first->op_sibling; |
5668 | cLISTOPo->op_first->op_sibling = kid->op_sibling; /* bypass old block */ | |
5669 | op_free(kid); /* then delete it */ | |
5670 | cLISTOPo->op_children--; | |
9c007264 | 5671 | } |
79072805 LW |
5672 | |
5673 | OP * | |
cea2e8a9 | 5674 | Perl_ck_split(pTHX_ OP *o) |
79072805 LW |
5675 | { |
5676 | register OP *kid; | |
aeea060c | 5677 | |
11343788 MB |
5678 | if (o->op_flags & OPf_STACKED) |
5679 | return no_fh_allowed(o); | |
79072805 | 5680 | |
11343788 | 5681 | kid = cLISTOPo->op_first; |
8990e307 | 5682 | if (kid->op_type != OP_NULL) |
cea2e8a9 | 5683 | Perl_croak(aTHX_ "panic: ck_split"); |
8990e307 | 5684 | kid = kid->op_sibling; |
11343788 MB |
5685 | op_free(cLISTOPo->op_first); |
5686 | cLISTOPo->op_first = kid; | |
85e6fe83 | 5687 | if (!kid) { |
79cb57f6 | 5688 | cLISTOPo->op_first = kid = newSVOP(OP_CONST, 0, newSVpvn(" ", 1)); |
11343788 | 5689 | cLISTOPo->op_last = kid; /* There was only one element previously */ |
85e6fe83 | 5690 | } |
79072805 LW |
5691 | |
5692 | if (kid->op_type != OP_MATCH) { | |
5693 | OP *sibl = kid->op_sibling; | |
463ee0b2 | 5694 | kid->op_sibling = 0; |
79072805 | 5695 | kid = pmruntime( newPMOP(OP_MATCH, OPf_SPECIAL), kid, Nullop); |
11343788 MB |
5696 | if (cLISTOPo->op_first == cLISTOPo->op_last) |
5697 | cLISTOPo->op_last = kid; | |
5698 | cLISTOPo->op_first = kid; | |
79072805 LW |
5699 | kid->op_sibling = sibl; |
5700 | } | |
5701 | ||
5702 | kid->op_type = OP_PUSHRE; | |
22c35a8c | 5703 | kid->op_ppaddr = PL_ppaddr[OP_PUSHRE]; |
79072805 LW |
5704 | scalar(kid); |
5705 | ||
5706 | if (!kid->op_sibling) | |
54b9620d | 5707 | append_elem(OP_SPLIT, o, newDEFSVOP()); |
79072805 LW |
5708 | |
5709 | kid = kid->op_sibling; | |
5710 | scalar(kid); | |
5711 | ||
5712 | if (!kid->op_sibling) | |
11343788 | 5713 | append_elem(OP_SPLIT, o, newSVOP(OP_CONST, 0, newSViv(0))); |
79072805 LW |
5714 | |
5715 | kid = kid->op_sibling; | |
5716 | scalar(kid); | |
5717 | ||
5718 | if (kid->op_sibling) | |
22c35a8c | 5719 | return too_many_arguments(o,PL_op_desc[o->op_type]); |
79072805 | 5720 | |
11343788 | 5721 | return o; |
79072805 LW |
5722 | } |
5723 | ||
5724 | OP * | |
eb6e2d6f GS |
5725 | Perl_ck_join(pTHX_ OP *o) |
5726 | { | |
5727 | if (ckWARN(WARN_SYNTAX)) { | |
5728 | OP *kid = cLISTOPo->op_first->op_sibling; | |
5729 | if (kid && kid->op_type == OP_MATCH) { | |
5730 | char *pmstr = "STRING"; | |
5731 | if (kPMOP->op_pmregexp) | |
5732 | pmstr = kPMOP->op_pmregexp->precomp; | |
5733 | Perl_warner(aTHX_ WARN_SYNTAX, | |
5734 | "/%s/ should probably be written as \"%s\"", | |
5735 | pmstr, pmstr); | |
5736 | } | |
5737 | } | |
5738 | return ck_fun(o); | |
5739 | } | |
5740 | ||
5741 | OP * | |
cea2e8a9 | 5742 | Perl_ck_subr(pTHX_ OP *o) |
79072805 | 5743 | { |
11343788 MB |
5744 | dTHR; |
5745 | OP *prev = ((cUNOPo->op_first->op_sibling) | |
5746 | ? cUNOPo : ((UNOP*)cUNOPo->op_first))->op_first; | |
5747 | OP *o2 = prev->op_sibling; | |
4633a7c4 LW |
5748 | OP *cvop; |
5749 | char *proto = 0; | |
5750 | CV *cv = 0; | |
46fc3d4c | 5751 | GV *namegv = 0; |
4633a7c4 LW |
5752 | int optional = 0; |
5753 | I32 arg = 0; | |
2d8e6c8d | 5754 | STRLEN n_a; |
4633a7c4 | 5755 | |
d3011074 | 5756 | o->op_private |= OPpENTERSUB_HASTARG; |
11343788 | 5757 | for (cvop = o2; cvop->op_sibling; cvop = cvop->op_sibling) ; |
4633a7c4 LW |
5758 | if (cvop->op_type == OP_RV2CV) { |
5759 | SVOP* tmpop; | |
11343788 | 5760 | o->op_private |= (cvop->op_private & OPpENTERSUB_AMPER); |
4633a7c4 LW |
5761 | null(cvop); /* disable rv2cv */ |
5762 | tmpop = (SVOP*)((UNOP*)cvop)->op_first; | |
76cd736e | 5763 | if (tmpop->op_type == OP_GV && !(o->op_private & OPpENTERSUB_AMPER)) { |
8ebc5c01 | 5764 | cv = GvCVu(tmpop->op_sv); |
76cd736e GS |
5765 | if (!cv) |
5766 | tmpop->op_private |= OPpEARLY_CV; | |
5767 | else if (SvPOK(cv)) { | |
46fc3d4c | 5768 | namegv = CvANON(cv) ? (GV*)tmpop->op_sv : CvGV(cv); |
2d8e6c8d | 5769 | proto = SvPV((SV*)cv, n_a); |
46fc3d4c | 5770 | } |
4633a7c4 LW |
5771 | } |
5772 | } | |
f5d5a27c | 5773 | else if (cvop->op_type == OP_METHOD || cvop->op_type == OP_METHOD_NAMED) { |
7a52d87a GS |
5774 | if (o2->op_type == OP_CONST) |
5775 | o2->op_private &= ~OPpCONST_STRICT; | |
58a40671 GS |
5776 | else if (o2->op_type == OP_LIST) { |
5777 | OP *o = ((UNOP*)o2)->op_first->op_sibling; | |
5778 | if (o && o->op_type == OP_CONST) | |
5779 | o->op_private &= ~OPpCONST_STRICT; | |
5780 | } | |
7a52d87a | 5781 | } |
3280af22 NIS |
5782 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
5783 | if (PERLDB_SUB && PL_curstash != PL_debstash) | |
11343788 MB |
5784 | o->op_private |= OPpENTERSUB_DB; |
5785 | while (o2 != cvop) { | |
4633a7c4 LW |
5786 | if (proto) { |
5787 | switch (*proto) { | |
5788 | case '\0': | |
5dc0d613 | 5789 | return too_many_arguments(o, gv_ename(namegv)); |
4633a7c4 LW |
5790 | case ';': |
5791 | optional = 1; | |
5792 | proto++; | |
5793 | continue; | |
5794 | case '$': | |
5795 | proto++; | |
5796 | arg++; | |
11343788 | 5797 | scalar(o2); |
4633a7c4 LW |
5798 | break; |
5799 | case '%': | |
5800 | case '@': | |
11343788 | 5801 | list(o2); |
4633a7c4 LW |
5802 | arg++; |
5803 | break; | |
5804 | case '&': | |
5805 | proto++; | |
5806 | arg++; | |
11343788 | 5807 | if (o2->op_type != OP_REFGEN && o2->op_type != OP_UNDEF) |
5dc0d613 | 5808 | bad_type(arg, "block", gv_ename(namegv), o2); |
4633a7c4 LW |
5809 | break; |
5810 | case '*': | |
2ba6ecf4 | 5811 | /* '*' allows any scalar type, including bareword */ |
4633a7c4 LW |
5812 | proto++; |
5813 | arg++; | |
11343788 | 5814 | if (o2->op_type == OP_RV2GV) |
2ba6ecf4 | 5815 | goto wrapref; /* autoconvert GLOB -> GLOBref */ |
7a52d87a GS |
5816 | else if (o2->op_type == OP_CONST) |
5817 | o2->op_private &= ~OPpCONST_STRICT; | |
9675f7ac GS |
5818 | else if (o2->op_type == OP_ENTERSUB) { |
5819 | /* accidental subroutine, revert to bareword */ | |
5820 | OP *gvop = ((UNOP*)o2)->op_first; | |
5821 | if (gvop && gvop->op_type == OP_NULL) { | |
5822 | gvop = ((UNOP*)gvop)->op_first; | |
5823 | if (gvop) { | |
5824 | for (; gvop->op_sibling; gvop = gvop->op_sibling) | |
5825 | ; | |
5826 | if (gvop && | |
5827 | (gvop->op_private & OPpENTERSUB_NOPAREN) && | |
5828 | (gvop = ((UNOP*)gvop)->op_first) && | |
5829 | gvop->op_type == OP_GV) | |
5830 | { | |
5831 | GV *gv = (GV*)((SVOP*)gvop)->op_sv; | |
5832 | OP *sibling = o2->op_sibling; | |
2692f720 | 5833 | SV *n = newSVpvn("",0); |
9675f7ac | 5834 | op_free(o2); |
2692f720 GS |
5835 | gv_fullname3(n, gv, ""); |
5836 | if (SvCUR(n)>6 && strnEQ(SvPVX(n),"main::",6)) | |
5837 | sv_chop(n, SvPVX(n)+6); | |
5838 | o2 = newSVOP(OP_CONST, 0, n); | |
9675f7ac GS |
5839 | prev->op_sibling = o2; |
5840 | o2->op_sibling = sibling; | |
5841 | } | |
5842 | } | |
5843 | } | |
5844 | } | |
2ba6ecf4 GS |
5845 | scalar(o2); |
5846 | break; | |
4633a7c4 LW |
5847 | case '\\': |
5848 | proto++; | |
5849 | arg++; | |
5850 | switch (*proto++) { | |
5851 | case '*': | |
11343788 | 5852 | if (o2->op_type != OP_RV2GV) |
5dc0d613 | 5853 | bad_type(arg, "symbol", gv_ename(namegv), o2); |
4633a7c4 LW |
5854 | goto wrapref; |
5855 | case '&': | |
11343788 | 5856 | if (o2->op_type != OP_RV2CV) |
5dc0d613 | 5857 | bad_type(arg, "sub", gv_ename(namegv), o2); |
4633a7c4 LW |
5858 | goto wrapref; |
5859 | case '$': | |
386acf99 GS |
5860 | if (o2->op_type != OP_RV2SV |
5861 | && o2->op_type != OP_PADSV | |
1c01eb51 GS |
5862 | && o2->op_type != OP_HELEM |
5863 | && o2->op_type != OP_AELEM | |
386acf99 GS |
5864 | && o2->op_type != OP_THREADSV) |
5865 | { | |
5dc0d613 | 5866 | bad_type(arg, "scalar", gv_ename(namegv), o2); |
386acf99 | 5867 | } |
4633a7c4 LW |
5868 | goto wrapref; |
5869 | case '@': | |
11343788 | 5870 | if (o2->op_type != OP_RV2AV && o2->op_type != OP_PADAV) |
5dc0d613 | 5871 | bad_type(arg, "array", gv_ename(namegv), o2); |
4633a7c4 LW |
5872 | goto wrapref; |
5873 | case '%': | |
11343788 | 5874 | if (o2->op_type != OP_RV2HV && o2->op_type != OP_PADHV) |
5dc0d613 | 5875 | bad_type(arg, "hash", gv_ename(namegv), o2); |
4633a7c4 LW |
5876 | wrapref: |
5877 | { | |
11343788 | 5878 | OP* kid = o2; |
6fa846a0 | 5879 | OP* sib = kid->op_sibling; |
4633a7c4 | 5880 | kid->op_sibling = 0; |
6fa846a0 GS |
5881 | o2 = newUNOP(OP_REFGEN, 0, kid); |
5882 | o2->op_sibling = sib; | |
e858de61 | 5883 | prev->op_sibling = o2; |
4633a7c4 LW |
5884 | } |
5885 | break; | |
5886 | default: goto oops; | |
5887 | } | |
5888 | break; | |
b1cb66bf | 5889 | case ' ': |
5890 | proto++; | |
5891 | continue; | |
4633a7c4 LW |
5892 | default: |
5893 | oops: | |
cea2e8a9 | 5894 | Perl_croak(aTHX_ "Malformed prototype for %s: %s", |
2d8e6c8d | 5895 | gv_ename(namegv), SvPV((SV*)cv, n_a)); |
4633a7c4 LW |
5896 | } |
5897 | } | |
5898 | else | |
11343788 MB |
5899 | list(o2); |
5900 | mod(o2, OP_ENTERSUB); | |
5901 | prev = o2; | |
5902 | o2 = o2->op_sibling; | |
4633a7c4 | 5903 | } |
fb73857a | 5904 | if (proto && !optional && |
5905 | (*proto && *proto != '@' && *proto != '%' && *proto != ';')) | |
5dc0d613 | 5906 | return too_few_arguments(o, gv_ename(namegv)); |
11343788 | 5907 | return o; |
79072805 LW |
5908 | } |
5909 | ||
5910 | OP * | |
cea2e8a9 | 5911 | Perl_ck_svconst(pTHX_ OP *o) |
8990e307 | 5912 | { |
11343788 MB |
5913 | SvREADONLY_on(cSVOPo->op_sv); |
5914 | return o; | |
8990e307 LW |
5915 | } |
5916 | ||
5917 | OP * | |
cea2e8a9 | 5918 | Perl_ck_trunc(pTHX_ OP *o) |
79072805 | 5919 | { |
11343788 MB |
5920 | if (o->op_flags & OPf_KIDS) { |
5921 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 | 5922 | |
a0d0e21e LW |
5923 | if (kid->op_type == OP_NULL) |
5924 | kid = (SVOP*)kid->op_sibling; | |
bb53490d GS |
5925 | if (kid && kid->op_type == OP_CONST && |
5926 | (kid->op_private & OPpCONST_BARE)) | |
5927 | { | |
11343788 | 5928 | o->op_flags |= OPf_SPECIAL; |
bb53490d GS |
5929 | kid->op_private &= ~OPpCONST_STRICT; |
5930 | } | |
79072805 | 5931 | } |
11343788 | 5932 | return ck_fun(o); |
79072805 LW |
5933 | } |
5934 | ||
463ee0b2 LW |
5935 | /* A peephole optimizer. We visit the ops in the order they're to execute. */ |
5936 | ||
79072805 | 5937 | void |
864dbfa3 | 5938 | Perl_peep(pTHX_ register OP *o) |
79072805 | 5939 | { |
11343788 | 5940 | dTHR; |
79072805 | 5941 | register OP* oldop = 0; |
2d8e6c8d | 5942 | STRLEN n_a; |
cd06dffe | 5943 | OP *last_composite = Nullop; |
2d8e6c8d | 5944 | |
a0d0e21e | 5945 | if (!o || o->op_seq) |
79072805 | 5946 | return; |
a0d0e21e | 5947 | ENTER; |
462e5cf6 | 5948 | SAVEOP(); |
3280af22 | 5949 | SAVESPTR(PL_curcop); |
a0d0e21e LW |
5950 | for (; o; o = o->op_next) { |
5951 | if (o->op_seq) | |
5952 | break; | |
3280af22 NIS |
5953 | if (!PL_op_seqmax) |
5954 | PL_op_seqmax++; | |
533c011a | 5955 | PL_op = o; |
a0d0e21e | 5956 | switch (o->op_type) { |
acb36ea4 | 5957 | case OP_SETSTATE: |
a0d0e21e LW |
5958 | case OP_NEXTSTATE: |
5959 | case OP_DBSTATE: | |
3280af22 NIS |
5960 | PL_curcop = ((COP*)o); /* for warnings */ |
5961 | o->op_seq = PL_op_seqmax++; | |
cd06dffe | 5962 | last_composite = Nullop; |
a0d0e21e LW |
5963 | break; |
5964 | ||
a0d0e21e | 5965 | case OP_CONST: |
7a52d87a GS |
5966 | if (cSVOPo->op_private & OPpCONST_STRICT) |
5967 | no_bareword_allowed(o); | |
5968 | /* FALL THROUGH */ | |
a0d0e21e LW |
5969 | case OP_UC: |
5970 | case OP_UCFIRST: | |
5971 | case OP_LC: | |
5972 | case OP_LCFIRST: | |
ed7ab888 GS |
5973 | if ( o->op_next && o->op_next->op_type == OP_STRINGIFY |
5974 | && !(o->op_next->op_private & OPpTARGET_MY) ) | |
5975 | null(o->op_next); | |
5976 | o->op_seq = PL_op_seqmax++; | |
5977 | break; | |
5978 | case OP_CONCAT: | |
5979 | case OP_JOIN: | |
a0d0e21e | 5980 | case OP_QUOTEMETA: |
b162f9ea IZ |
5981 | if (o->op_next && o->op_next->op_type == OP_STRINGIFY) { |
5982 | if (o->op_next->op_private & OPpTARGET_MY) { | |
ed7ab888 | 5983 | if ((o->op_flags & OPf_STACKED) /* chained concats */ |
b162f9ea IZ |
5984 | || (o->op_type == OP_CONCAT |
5985 | /* Concat has problems if target is equal to right arg. */ | |
5986 | && (((LISTOP*)o)->op_first->op_sibling->op_type | |
5987 | == OP_PADSV) | |
5988 | && (((LISTOP*)o)->op_first->op_sibling->op_targ | |
5989 | == o->op_next->op_targ))) { | |
5990 | goto ignore_optimization; | |
cd06dffe GS |
5991 | } |
5992 | else { | |
b162f9ea | 5993 | o->op_targ = o->op_next->op_targ; |
2c2d71f5 | 5994 | o->op_private |= OPpTARGET_MY; |
b162f9ea IZ |
5995 | } |
5996 | } | |
a0d0e21e | 5997 | null(o->op_next); |
b162f9ea IZ |
5998 | } |
5999 | ignore_optimization: | |
3280af22 | 6000 | o->op_seq = PL_op_seqmax++; |
a0d0e21e | 6001 | break; |
8990e307 | 6002 | case OP_STUB: |
54310121 | 6003 | if ((o->op_flags & OPf_WANT) != OPf_WANT_LIST) { |
3280af22 | 6004 | o->op_seq = PL_op_seqmax++; |
54310121 | 6005 | break; /* Scalar stub must produce undef. List stub is noop */ |
8990e307 | 6006 | } |
748a9306 | 6007 | goto nothin; |
79072805 | 6008 | case OP_NULL: |
acb36ea4 GS |
6009 | if (o->op_targ == OP_NEXTSTATE |
6010 | || o->op_targ == OP_DBSTATE | |
6011 | || o->op_targ == OP_SETSTATE) | |
6012 | { | |
3280af22 | 6013 | PL_curcop = ((COP*)o); |
acb36ea4 | 6014 | } |
748a9306 | 6015 | goto nothin; |
79072805 | 6016 | case OP_SCALAR: |
93a17b20 | 6017 | case OP_LINESEQ: |
463ee0b2 | 6018 | case OP_SCOPE: |
748a9306 | 6019 | nothin: |
a0d0e21e LW |
6020 | if (oldop && o->op_next) { |
6021 | oldop->op_next = o->op_next; | |
79072805 LW |
6022 | continue; |
6023 | } | |
3280af22 | 6024 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
6025 | break; |
6026 | ||
6027 | case OP_GV: | |
a0d0e21e | 6028 | if (o->op_next->op_type == OP_RV2SV) { |
5f05dabc | 6029 | if (!(o->op_next->op_private & OPpDEREF)) { |
a0d0e21e LW |
6030 | null(o->op_next); |
6031 | o->op_private |= o->op_next->op_private & OPpLVAL_INTRO; | |
6032 | o->op_next = o->op_next->op_next; | |
6033 | o->op_type = OP_GVSV; | |
22c35a8c | 6034 | o->op_ppaddr = PL_ppaddr[OP_GVSV]; |
8990e307 LW |
6035 | } |
6036 | } | |
a0d0e21e LW |
6037 | else if (o->op_next->op_type == OP_RV2AV) { |
6038 | OP* pop = o->op_next->op_next; | |
6039 | IV i; | |
8990e307 | 6040 | if (pop->op_type == OP_CONST && |
533c011a | 6041 | (PL_op = pop->op_next) && |
8990e307 | 6042 | pop->op_next->op_type == OP_AELEM && |
a0d0e21e | 6043 | !(pop->op_next->op_private & |
68dc0745 | 6044 | (OPpLVAL_INTRO|OPpLVAL_DEFER|OPpDEREF)) && |
3280af22 | 6045 | (i = SvIV(((SVOP*)pop)->op_sv) - PL_compiling.cop_arybase) |
a0d0e21e | 6046 | <= 255 && |
8990e307 LW |
6047 | i >= 0) |
6048 | { | |
a0d0e21e | 6049 | null(o->op_next); |
8990e307 LW |
6050 | null(pop->op_next); |
6051 | null(pop); | |
a0d0e21e LW |
6052 | o->op_flags |= pop->op_next->op_flags & OPf_MOD; |
6053 | o->op_next = pop->op_next->op_next; | |
6054 | o->op_type = OP_AELEMFAST; | |
22c35a8c | 6055 | o->op_ppaddr = PL_ppaddr[OP_AELEMFAST]; |
a0d0e21e | 6056 | o->op_private = (U8)i; |
a6006777 | 6057 | GvAVn(((GVOP*)o)->op_gv); |
8990e307 | 6058 | } |
79072805 | 6059 | } |
76cd736e GS |
6060 | else if ((o->op_private & OPpEARLY_CV) && ckWARN(WARN_UNSAFE)) { |
6061 | GV *gv = cGVOPo->op_gv; | |
6062 | if (SvTYPE(gv) == SVt_PVGV && GvCV(gv) && SvPVX(GvCV(gv))) { | |
6063 | /* XXX could check prototype here instead of just carping */ | |
6064 | SV *sv = sv_newmortal(); | |
6065 | gv_efullname3(sv, gv, Nullch); | |
6066 | Perl_warner(aTHX_ WARN_UNSAFE, | |
6067 | "%s() called too early to check prototype", | |
6068 | SvPV_nolen(sv)); | |
6069 | } | |
6070 | } | |
6071 | ||
3280af22 | 6072 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
6073 | break; |
6074 | ||
a0d0e21e | 6075 | case OP_MAPWHILE: |
79072805 LW |
6076 | case OP_GREPWHILE: |
6077 | case OP_AND: | |
6078 | case OP_OR: | |
2c2d71f5 JH |
6079 | case OP_ANDASSIGN: |
6080 | case OP_ORASSIGN: | |
1a67a97c SM |
6081 | case OP_COND_EXPR: |
6082 | case OP_RANGE: | |
3280af22 | 6083 | o->op_seq = PL_op_seqmax++; |
fd4d1407 IZ |
6084 | while (cLOGOP->op_other->op_type == OP_NULL) |
6085 | cLOGOP->op_other = cLOGOP->op_other->op_next; | |
79072805 LW |
6086 | peep(cLOGOP->op_other); |
6087 | break; | |
6088 | ||
79072805 | 6089 | case OP_ENTERLOOP: |
3280af22 | 6090 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
6091 | peep(cLOOP->op_redoop); |
6092 | peep(cLOOP->op_nextop); | |
6093 | peep(cLOOP->op_lastop); | |
6094 | break; | |
6095 | ||
8782bef2 | 6096 | case OP_QR: |
79072805 LW |
6097 | case OP_MATCH: |
6098 | case OP_SUBST: | |
3280af22 | 6099 | o->op_seq = PL_op_seqmax++; |
a0d0e21e | 6100 | peep(cPMOP->op_pmreplstart); |
79072805 LW |
6101 | break; |
6102 | ||
a0d0e21e | 6103 | case OP_EXEC: |
3280af22 | 6104 | o->op_seq = PL_op_seqmax++; |
599cee73 PM |
6105 | if (ckWARN(WARN_SYNTAX) && o->op_next |
6106 | && o->op_next->op_type == OP_NEXTSTATE) { | |
a0d0e21e | 6107 | if (o->op_next->op_sibling && |
20408e3c GS |
6108 | o->op_next->op_sibling->op_type != OP_EXIT && |
6109 | o->op_next->op_sibling->op_type != OP_WARN && | |
a0d0e21e | 6110 | o->op_next->op_sibling->op_type != OP_DIE) { |
3280af22 | 6111 | line_t oldline = PL_curcop->cop_line; |
a0d0e21e | 6112 | |
3280af22 | 6113 | PL_curcop->cop_line = ((COP*)o->op_next)->cop_line; |
cea2e8a9 GS |
6114 | Perl_warner(aTHX_ WARN_SYNTAX, "Statement unlikely to be reached"); |
6115 | Perl_warner(aTHX_ WARN_SYNTAX, "(Maybe you meant system() when you said exec()?)\n"); | |
3280af22 | 6116 | PL_curcop->cop_line = oldline; |
a0d0e21e LW |
6117 | } |
6118 | } | |
6119 | break; | |
aeea060c | 6120 | |
c750a3ec MB |
6121 | case OP_HELEM: { |
6122 | UNOP *rop; | |
6123 | SV *lexname; | |
6124 | GV **fields; | |
6125 | SV **svp, **indsvp; | |
6126 | I32 ind; | |
6127 | char *key; | |
6128 | STRLEN keylen; | |
aeea060c | 6129 | |
377b21bb | 6130 | if ((o->op_private & (OPpLVAL_INTRO)) |
c750a3ec MB |
6131 | || ((BINOP*)o)->op_last->op_type != OP_CONST) |
6132 | break; | |
6133 | rop = (UNOP*)((BINOP*)o)->op_first; | |
6134 | if (rop->op_type != OP_RV2HV || rop->op_first->op_type != OP_PADSV) | |
6135 | break; | |
3280af22 | 6136 | lexname = *av_fetch(PL_comppad_name, rop->op_first->op_targ, TRUE); |
c750a3ec MB |
6137 | if (!SvOBJECT(lexname)) |
6138 | break; | |
5196be3e | 6139 | fields = (GV**)hv_fetch(SvSTASH(lexname), "FIELDS", 6, FALSE); |
c750a3ec MB |
6140 | if (!fields || !GvHV(*fields)) |
6141 | break; | |
6142 | svp = &((SVOP*)((BINOP*)o)->op_last)->op_sv; | |
6143 | key = SvPV(*svp, keylen); | |
6144 | indsvp = hv_fetch(GvHV(*fields), key, keylen, FALSE); | |
6145 | if (!indsvp) { | |
cea2e8a9 | 6146 | Perl_croak(aTHX_ "No such field \"%s\" in variable %s of type %s", |
2d8e6c8d | 6147 | key, SvPV(lexname, n_a), HvNAME(SvSTASH(lexname))); |
c750a3ec MB |
6148 | } |
6149 | ind = SvIV(*indsvp); | |
6150 | if (ind < 1) | |
cea2e8a9 | 6151 | Perl_croak(aTHX_ "Bad index while coercing array into hash"); |
c750a3ec | 6152 | rop->op_type = OP_RV2AV; |
22c35a8c | 6153 | rop->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
c750a3ec | 6154 | o->op_type = OP_AELEM; |
22c35a8c | 6155 | o->op_ppaddr = PL_ppaddr[OP_AELEM]; |
c750a3ec MB |
6156 | SvREFCNT_dec(*svp); |
6157 | *svp = newSViv(ind); | |
6158 | break; | |
6159 | } | |
6160 | ||
cd06dffe GS |
6161 | case OP_RV2AV: |
6162 | case OP_RV2HV: | |
6163 | if (!(o->op_flags & OPf_WANT) | |
6164 | || o->op_flags & OPf_WANT == OPf_WANT_LIST) | |
6165 | last_composite = o; | |
6166 | o->op_seq = PL_op_seqmax++; | |
6167 | break; | |
6168 | ||
6169 | case OP_RETURN: | |
6170 | if (o->op_next->op_type != OP_LEAVESUBLV) { | |
6171 | o->op_seq = PL_op_seqmax++; | |
6172 | break; | |
6173 | } | |
6174 | /* FALL THROUGH */ | |
6175 | ||
6176 | case OP_LEAVESUBLV: | |
6177 | if (last_composite) { | |
6178 | OP *r = last_composite; | |
6179 | ||
6180 | while (r->op_sibling) | |
6181 | r = r->op_sibling; | |
6182 | if (r->op_next == o | |
6183 | || (r->op_next->op_type == OP_LIST | |
6184 | && r->op_next->op_next == o)) | |
6185 | { | |
6186 | if (last_composite->op_type == OP_RV2AV) | |
6187 | yyerror("Lvalue subs returning arrays not implemented yet"); | |
6188 | else | |
6189 | yyerror("Lvalue subs returning hashes not implemented yet"); | |
6190 | ; | |
6191 | } | |
6192 | } | |
6193 | /* FALL THROUGH */ | |
6194 | ||
79072805 | 6195 | default: |
3280af22 | 6196 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
6197 | break; |
6198 | } | |
a0d0e21e | 6199 | oldop = o; |
79072805 | 6200 | } |
a0d0e21e | 6201 | LEAVE; |
79072805 | 6202 | } |