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 | 20 | #include "perl.h" |
77ca0c92 | 21 | #include "keywords.h" |
79072805 | 22 | |
b7dc083c | 23 | /* #define PL_OP_SLAB_ALLOC */ |
7934575e GS |
24 | |
25 | /* XXXXXX testing */ | |
af365420 GS |
26 | #ifdef USE_ITHREADS |
27 | # define OP_REFCNT_LOCK NOOP | |
28 | # define OP_REFCNT_UNLOCK NOOP | |
29 | # define OpREFCNT_set(o,n) ((o)->op_targ = (n)) | |
30 | # define OpREFCNT_dec(o) (--(o)->op_targ) | |
31 | #else | |
32 | # define OP_REFCNT_LOCK NOOP | |
33 | # define OP_REFCNT_UNLOCK NOOP | |
34 | # define OpREFCNT_set(o,n) NOOP | |
35 | # define OpREFCNT_dec(o) 0 | |
36 | #endif | |
7934575e | 37 | |
b7dc083c NIS |
38 | #ifdef PL_OP_SLAB_ALLOC |
39 | #define SLAB_SIZE 8192 | |
40 | static char *PL_OpPtr = NULL; | |
41 | static int PL_OpSpace = 0; | |
42 | #define NewOp(m,var,c,type) do { if ((PL_OpSpace -= c*sizeof(type)) >= 0) \ | |
43 | var = (type *)(PL_OpPtr -= c*sizeof(type)); \ | |
44 | else \ | |
45 | var = (type *) Slab_Alloc(m,c*sizeof(type)); \ | |
46 | } while (0) | |
47 | ||
864dbfa3 | 48 | STATIC void * |
cea2e8a9 | 49 | S_Slab_Alloc(pTHX_ int m, size_t sz) |
b7dc083c NIS |
50 | { |
51 | Newz(m,PL_OpPtr,SLAB_SIZE,char); | |
52 | PL_OpSpace = SLAB_SIZE - sz; | |
53 | return PL_OpPtr += PL_OpSpace; | |
54 | } | |
76e3520e | 55 | |
b7dc083c NIS |
56 | #else |
57 | #define NewOp(m, var, c, type) Newz(m, var, c, type) | |
58 | #endif | |
e50aee73 | 59 | /* |
5dc0d613 | 60 | * In the following definition, the ", Nullop" is just to make the compiler |
a5f75d66 | 61 | * think the expression is of the right type: croak actually does a Siglongjmp. |
e50aee73 | 62 | */ |
11343788 | 63 | #define CHECKOP(type,o) \ |
3280af22 | 64 | ((PL_op_mask && PL_op_mask[type]) \ |
5dc0d613 | 65 | ? ( op_free((OP*)o), \ |
cea2e8a9 | 66 | Perl_croak(aTHX_ "%s trapped by operation mask", PL_op_desc[type]), \ |
28757baa | 67 | Nullop ) \ |
fc0dc3b3 | 68 | : CALL_FPTR(PL_check[type])(aTHX_ (OP*)o)) |
e50aee73 | 69 | |
c53d7c7d HS |
70 | #define PAD_MAX 999999999 |
71 | ||
76e3520e | 72 | STATIC char* |
cea2e8a9 | 73 | S_gv_ename(pTHX_ GV *gv) |
4633a7c4 | 74 | { |
2d8e6c8d | 75 | STRLEN n_a; |
4633a7c4 | 76 | SV* tmpsv = sv_newmortal(); |
46fc3d4c | 77 | gv_efullname3(tmpsv, gv, Nullch); |
2d8e6c8d | 78 | return SvPV(tmpsv,n_a); |
4633a7c4 LW |
79 | } |
80 | ||
76e3520e | 81 | STATIC OP * |
cea2e8a9 | 82 | S_no_fh_allowed(pTHX_ OP *o) |
79072805 | 83 | { |
cea2e8a9 | 84 | yyerror(Perl_form(aTHX_ "Missing comma after first argument to %s function", |
22c35a8c | 85 | PL_op_desc[o->op_type])); |
11343788 | 86 | return o; |
79072805 LW |
87 | } |
88 | ||
76e3520e | 89 | STATIC OP * |
cea2e8a9 | 90 | S_too_few_arguments(pTHX_ OP *o, char *name) |
79072805 | 91 | { |
cea2e8a9 | 92 | yyerror(Perl_form(aTHX_ "Not enough arguments for %s", name)); |
11343788 | 93 | return o; |
79072805 LW |
94 | } |
95 | ||
76e3520e | 96 | STATIC OP * |
cea2e8a9 | 97 | S_too_many_arguments(pTHX_ OP *o, char *name) |
79072805 | 98 | { |
cea2e8a9 | 99 | yyerror(Perl_form(aTHX_ "Too many arguments for %s", name)); |
11343788 | 100 | return o; |
79072805 LW |
101 | } |
102 | ||
76e3520e | 103 | STATIC void |
cea2e8a9 | 104 | S_bad_type(pTHX_ I32 n, char *t, char *name, OP *kid) |
8990e307 | 105 | { |
cea2e8a9 | 106 | yyerror(Perl_form(aTHX_ "Type of arg %d to %s must be %s (not %s)", |
22c35a8c | 107 | (int)n, name, t, PL_op_desc[kid->op_type])); |
8990e307 LW |
108 | } |
109 | ||
7a52d87a | 110 | STATIC void |
cea2e8a9 | 111 | S_no_bareword_allowed(pTHX_ OP *o) |
7a52d87a | 112 | { |
5a844595 GS |
113 | qerror(Perl_mess(aTHX_ |
114 | "Bareword \"%s\" not allowed while \"strict subs\" in use", | |
7766f137 | 115 | SvPV_nolen(cSVOPo_sv))); |
7a52d87a GS |
116 | } |
117 | ||
79072805 LW |
118 | /* "register" allocation */ |
119 | ||
120 | PADOFFSET | |
864dbfa3 | 121 | Perl_pad_allocmy(pTHX_ char *name) |
93a17b20 | 122 | { |
11343788 | 123 | dTHR; |
a0d0e21e LW |
124 | PADOFFSET off; |
125 | SV *sv; | |
126 | ||
834a4ddd | 127 | if (!( |
77ca0c92 | 128 | PL_in_my == KEY_our || |
834a4ddd LW |
129 | isALPHA(name[1]) || |
130 | (PL_hints & HINT_UTF8 && (name[1] & 0xc0) == 0xc0) || | |
77ca0c92 | 131 | name[1] == '_' && (int)strlen(name) > 2 )) |
834a4ddd | 132 | { |
c4d0567e | 133 | if (!isPRINT(name[1]) || strchr("\t\n\r\f", name[1])) { |
2b92dfce GS |
134 | /* 1999-02-27 mjd@plover.com */ |
135 | char *p; | |
136 | p = strchr(name, '\0'); | |
137 | /* The next block assumes the buffer is at least 205 chars | |
138 | long. At present, it's always at least 256 chars. */ | |
139 | if (p-name > 200) { | |
140 | strcpy(name+200, "..."); | |
141 | p = name+199; | |
142 | } | |
143 | else { | |
144 | p[1] = '\0'; | |
145 | } | |
146 | /* Move everything else down one character */ | |
147 | for (; p-name > 2; p--) | |
148 | *p = *(p-1); | |
46fc3d4c | 149 | name[2] = toCTRL(name[1]); |
150 | name[1] = '^'; | |
151 | } | |
cea2e8a9 | 152 | yyerror(Perl_form(aTHX_ "Can't use global %s in \"my\"",name)); |
a0d0e21e | 153 | } |
599cee73 | 154 | if (ckWARN(WARN_UNSAFE) && AvFILLp(PL_comppad_name) >= 0) { |
3280af22 NIS |
155 | SV **svp = AvARRAY(PL_comppad_name); |
156 | for (off = AvFILLp(PL_comppad_name); off > PL_comppad_name_floor; off--) { | |
b1cb66bf | 157 | if ((sv = svp[off]) |
3280af22 | 158 | && sv != &PL_sv_undef |
c53d7c7d | 159 | && (SvIVX(sv) == PAD_MAX || SvIVX(sv) == 0) |
b1cb66bf | 160 | && strEQ(name, SvPVX(sv))) |
161 | { | |
cea2e8a9 | 162 | Perl_warner(aTHX_ WARN_UNSAFE, |
77ca0c92 LW |
163 | "\"%s\" variable %s masks earlier declaration in same %s", |
164 | (PL_in_my == KEY_our ? "our" : "my"), | |
165 | name, | |
166 | (SvIVX(sv) == PAD_MAX ? "scope" : "statement")); | |
b1cb66bf | 167 | break; |
168 | } | |
169 | } | |
170 | } | |
a0d0e21e LW |
171 | off = pad_alloc(OP_PADSV, SVs_PADMY); |
172 | sv = NEWSV(1102,0); | |
93a17b20 LW |
173 | sv_upgrade(sv, SVt_PVNV); |
174 | sv_setpv(sv, name); | |
3280af22 | 175 | if (PL_in_my_stash) { |
c750a3ec | 176 | if (*name != '$') |
cea2e8a9 | 177 | yyerror(Perl_form(aTHX_ "Can't declare class for non-scalar %s in \"my\"", |
dce40276 | 178 | name)); |
c750a3ec MB |
179 | SvOBJECT_on(sv); |
180 | (void)SvUPGRADE(sv, SVt_PVMG); | |
3280af22 NIS |
181 | SvSTASH(sv) = (HV*)SvREFCNT_inc(PL_in_my_stash); |
182 | PL_sv_objcount++; | |
c750a3ec | 183 | } |
77ca0c92 LW |
184 | if (PL_in_my == KEY_our) |
185 | SvFLAGS(sv) |= SVpad_OUR; | |
3280af22 | 186 | av_store(PL_comppad_name, off, sv); |
65202027 | 187 | SvNVX(sv) = (NV)PAD_MAX; |
8990e307 | 188 | SvIVX(sv) = 0; /* Not yet introduced--see newSTATEOP */ |
3280af22 NIS |
189 | if (!PL_min_intro_pending) |
190 | PL_min_intro_pending = off; | |
191 | PL_max_intro_pending = off; | |
93a17b20 | 192 | if (*name == '@') |
3280af22 | 193 | av_store(PL_comppad, off, (SV*)newAV()); |
93a17b20 | 194 | else if (*name == '%') |
3280af22 NIS |
195 | av_store(PL_comppad, off, (SV*)newHV()); |
196 | SvPADMY_on(PL_curpad[off]); | |
93a17b20 LW |
197 | return off; |
198 | } | |
199 | ||
2680586e GS |
200 | #define FINDLEX_NOSEARCH 1 /* don't search outer contexts */ |
201 | ||
76e3520e | 202 | STATIC PADOFFSET |
cea2e8a9 | 203 | S_pad_findlex(pTHX_ char *name, PADOFFSET newoff, U32 seq, CV* startcv, |
864dbfa3 | 204 | I32 cx_ix, I32 saweval, U32 flags) |
93a17b20 | 205 | { |
11343788 | 206 | dTHR; |
748a9306 | 207 | CV *cv; |
93a17b20 LW |
208 | I32 off; |
209 | SV *sv; | |
93a17b20 | 210 | register I32 i; |
c09156bb | 211 | register PERL_CONTEXT *cx; |
93a17b20 | 212 | |
748a9306 | 213 | for (cv = startcv; cv; cv = CvOUTSIDE(cv)) { |
4fdae800 | 214 | AV *curlist = CvPADLIST(cv); |
215 | SV **svp = av_fetch(curlist, 0, FALSE); | |
748a9306 | 216 | AV *curname; |
4fdae800 | 217 | |
3280af22 | 218 | if (!svp || *svp == &PL_sv_undef) |
4633a7c4 | 219 | continue; |
748a9306 LW |
220 | curname = (AV*)*svp; |
221 | svp = AvARRAY(curname); | |
93965878 | 222 | for (off = AvFILLp(curname); off > 0; off--) { |
748a9306 | 223 | if ((sv = svp[off]) && |
3280af22 | 224 | sv != &PL_sv_undef && |
748a9306 | 225 | seq <= SvIVX(sv) && |
13826f2c | 226 | seq > I_32(SvNVX(sv)) && |
748a9306 LW |
227 | strEQ(SvPVX(sv), name)) |
228 | { | |
5f05dabc | 229 | I32 depth; |
230 | AV *oldpad; | |
231 | SV *oldsv; | |
232 | ||
233 | depth = CvDEPTH(cv); | |
234 | if (!depth) { | |
9607fc9c | 235 | if (newoff) { |
236 | if (SvFAKE(sv)) | |
237 | continue; | |
4fdae800 | 238 | return 0; /* don't clone from inactive stack frame */ |
9607fc9c | 239 | } |
5f05dabc | 240 | depth = 1; |
241 | } | |
242 | oldpad = (AV*)*av_fetch(curlist, depth, FALSE); | |
243 | oldsv = *av_fetch(oldpad, off, TRUE); | |
748a9306 | 244 | if (!newoff) { /* Not a mere clone operation. */ |
9607fc9c | 245 | SV *namesv = NEWSV(1103,0); |
748a9306 | 246 | newoff = pad_alloc(OP_PADSV, SVs_PADMY); |
9607fc9c | 247 | sv_upgrade(namesv, SVt_PVNV); |
248 | sv_setpv(namesv, name); | |
3280af22 | 249 | av_store(PL_comppad_name, newoff, namesv); |
65202027 | 250 | SvNVX(namesv) = (NV)PL_curcop->cop_seq; |
c53d7c7d | 251 | SvIVX(namesv) = PAD_MAX; /* A ref, intro immediately */ |
9607fc9c | 252 | SvFAKE_on(namesv); /* A ref, not a real var */ |
77ca0c92 LW |
253 | if (SvFLAGS(sv) & SVpad_OUR)/* An "our" variable */ |
254 | SvFLAGS(namesv) |= SVpad_OUR; | |
87671ffc | 255 | if (SvOBJECT(sv)) { /* A typed var */ |
3d93dc8b GS |
256 | SvOBJECT_on(namesv); |
257 | (void)SvUPGRADE(namesv, SVt_PVMG); | |
87671ffc | 258 | SvSTASH(namesv) = (HV*)SvREFCNT_inc((SV*)SvSTASH(sv)); |
3d93dc8b GS |
259 | PL_sv_objcount++; |
260 | } | |
3280af22 | 261 | if (CvANON(PL_compcv) || SvTYPE(PL_compcv) == SVt_PVFM) { |
28757baa | 262 | /* "It's closures all the way down." */ |
3280af22 | 263 | CvCLONE_on(PL_compcv); |
54310121 | 264 | if (cv == startcv) { |
3280af22 | 265 | if (CvANON(PL_compcv)) |
54310121 | 266 | oldsv = Nullsv; /* no need to keep ref */ |
267 | } | |
268 | else { | |
28757baa | 269 | CV *bcv; |
270 | for (bcv = startcv; | |
271 | bcv && bcv != cv && !CvCLONE(bcv); | |
6b35e009 GS |
272 | bcv = CvOUTSIDE(bcv)) |
273 | { | |
28757baa | 274 | if (CvANON(bcv)) |
275 | CvCLONE_on(bcv); | |
276 | else { | |
6b35e009 GS |
277 | if (ckWARN(WARN_CLOSURE) |
278 | && !CvUNIQUE(bcv) && !CvUNIQUE(cv)) | |
279 | { | |
cea2e8a9 | 280 | Perl_warner(aTHX_ WARN_CLOSURE, |
44a8e56a | 281 | "Variable \"%s\" may be unavailable", |
28757baa | 282 | name); |
6b35e009 | 283 | } |
28757baa | 284 | break; |
285 | } | |
286 | } | |
287 | } | |
288 | } | |
3280af22 | 289 | else if (!CvUNIQUE(PL_compcv)) { |
599cee73 | 290 | if (ckWARN(WARN_CLOSURE) && !SvFAKE(sv) && !CvUNIQUE(cv)) |
cea2e8a9 | 291 | Perl_warner(aTHX_ WARN_CLOSURE, |
599cee73 | 292 | "Variable \"%s\" will not stay shared", name); |
5f05dabc | 293 | } |
748a9306 | 294 | } |
3280af22 | 295 | av_store(PL_comppad, newoff, SvREFCNT_inc(oldsv)); |
748a9306 LW |
296 | return newoff; |
297 | } | |
93a17b20 LW |
298 | } |
299 | } | |
300 | ||
2680586e GS |
301 | if (flags & FINDLEX_NOSEARCH) |
302 | return 0; | |
303 | ||
93a17b20 LW |
304 | /* Nothing in current lexical context--try eval's context, if any. |
305 | * This is necessary to let the perldb get at lexically scoped variables. | |
306 | * XXX This will also probably interact badly with eval tree caching. | |
307 | */ | |
308 | ||
748a9306 | 309 | for (i = cx_ix; i >= 0; i--) { |
93a17b20 | 310 | cx = &cxstack[i]; |
6b35e009 | 311 | switch (CxTYPE(cx)) { |
93a17b20 | 312 | default: |
748a9306 LW |
313 | if (i == 0 && saweval) { |
314 | seq = cxstack[saweval].blk_oldcop->cop_seq; | |
2680586e | 315 | return pad_findlex(name, newoff, seq, PL_main_cv, -1, saweval, 0); |
748a9306 | 316 | } |
93a17b20 LW |
317 | break; |
318 | case CXt_EVAL: | |
44a8e56a | 319 | switch (cx->blk_eval.old_op_type) { |
320 | case OP_ENTEREVAL: | |
6b35e009 GS |
321 | if (CxREALEVAL(cx)) |
322 | saweval = i; | |
44a8e56a | 323 | break; |
324 | case OP_REQUIRE: | |
325 | /* require must have its own scope */ | |
326 | return 0; | |
327 | } | |
93a17b20 | 328 | break; |
7766f137 | 329 | case CXt_FORMAT: |
93a17b20 LW |
330 | case CXt_SUB: |
331 | if (!saweval) | |
332 | return 0; | |
333 | cv = cx->blk_sub.cv; | |
3280af22 | 334 | if (PL_debstash && CvSTASH(cv) == PL_debstash) { /* ignore DB'* scope */ |
748a9306 | 335 | saweval = i; /* so we know where we were called from */ |
93a17b20 | 336 | continue; |
93a17b20 | 337 | } |
748a9306 | 338 | seq = cxstack[saweval].blk_oldcop->cop_seq; |
2680586e | 339 | return pad_findlex(name, newoff, seq, cv, i-1, saweval,FINDLEX_NOSEARCH); |
93a17b20 LW |
340 | } |
341 | } | |
342 | ||
748a9306 LW |
343 | return 0; |
344 | } | |
a0d0e21e | 345 | |
748a9306 | 346 | PADOFFSET |
864dbfa3 | 347 | Perl_pad_findmy(pTHX_ char *name) |
748a9306 | 348 | { |
11343788 | 349 | dTHR; |
748a9306 | 350 | I32 off; |
54310121 | 351 | I32 pendoff = 0; |
748a9306 | 352 | SV *sv; |
3280af22 NIS |
353 | SV **svp = AvARRAY(PL_comppad_name); |
354 | U32 seq = PL_cop_seqmax; | |
6b35e009 | 355 | PERL_CONTEXT *cx; |
33b8ce05 | 356 | CV *outside; |
748a9306 | 357 | |
11343788 MB |
358 | #ifdef USE_THREADS |
359 | /* | |
360 | * Special case to get lexical (and hence per-thread) @_. | |
361 | * XXX I need to find out how to tell at parse-time whether use | |
362 | * of @_ should refer to a lexical (from a sub) or defgv (global | |
363 | * scope and maybe weird sub-ish things like formats). See | |
364 | * startsub in perly.y. It's possible that @_ could be lexical | |
365 | * (at least from subs) even in non-threaded perl. | |
366 | */ | |
367 | if (strEQ(name, "@_")) | |
368 | return 0; /* success. (NOT_IN_PAD indicates failure) */ | |
369 | #endif /* USE_THREADS */ | |
370 | ||
748a9306 | 371 | /* The one we're looking for is probably just before comppad_name_fill. */ |
3280af22 | 372 | for (off = AvFILLp(PL_comppad_name); off > 0; off--) { |
a0d0e21e | 373 | if ((sv = svp[off]) && |
3280af22 | 374 | sv != &PL_sv_undef && |
54310121 | 375 | (!SvIVX(sv) || |
376 | (seq <= SvIVX(sv) && | |
377 | seq > I_32(SvNVX(sv)))) && | |
a0d0e21e LW |
378 | strEQ(SvPVX(sv), name)) |
379 | { | |
77ca0c92 | 380 | if (SvIVX(sv) || SvFLAGS(sv) & SVpad_OUR) |
54310121 | 381 | return (PADOFFSET)off; |
382 | pendoff = off; /* this pending def. will override import */ | |
a0d0e21e LW |
383 | } |
384 | } | |
748a9306 | 385 | |
33b8ce05 GS |
386 | outside = CvOUTSIDE(PL_compcv); |
387 | ||
388 | /* Check if if we're compiling an eval'', and adjust seq to be the | |
389 | * eval's seq number. This depends on eval'' having a non-null | |
390 | * CvOUTSIDE() while it is being compiled. The eval'' itself is | |
1aff0e91 GS |
391 | * identified by CvEVAL being true and CvGV being null. */ |
392 | if (outside && CvEVAL(PL_compcv) && !CvGV(PL_compcv) && cxstack_ix >= 0) { | |
6b35e009 GS |
393 | cx = &cxstack[cxstack_ix]; |
394 | if (CxREALEVAL(cx)) | |
395 | seq = cx->blk_oldcop->cop_seq; | |
396 | } | |
397 | ||
748a9306 | 398 | /* See if it's in a nested scope */ |
2680586e | 399 | off = pad_findlex(name, 0, seq, outside, cxstack_ix, 0, 0); |
54310121 | 400 | if (off) { |
401 | /* If there is a pending local definition, this new alias must die */ | |
402 | if (pendoff) | |
3280af22 | 403 | SvIVX(AvARRAY(PL_comppad_name)[off]) = seq; |
11343788 | 404 | return off; /* pad_findlex returns 0 for failure...*/ |
54310121 | 405 | } |
11343788 | 406 | return NOT_IN_PAD; /* ...but we return NOT_IN_PAD for failure */ |
93a17b20 LW |
407 | } |
408 | ||
409 | void | |
864dbfa3 | 410 | Perl_pad_leavemy(pTHX_ I32 fill) |
93a17b20 | 411 | { |
0453d815 | 412 | dTHR; |
93a17b20 | 413 | I32 off; |
3280af22 | 414 | SV **svp = AvARRAY(PL_comppad_name); |
93a17b20 | 415 | SV *sv; |
3280af22 NIS |
416 | if (PL_min_intro_pending && fill < PL_min_intro_pending) { |
417 | for (off = PL_max_intro_pending; off >= PL_min_intro_pending; off--) { | |
0453d815 PM |
418 | if ((sv = svp[off]) && sv != &PL_sv_undef && ckWARN_d(WARN_INTERNAL)) |
419 | Perl_warner(aTHX_ WARN_INTERNAL, "%s never introduced", SvPVX(sv)); | |
8990e307 LW |
420 | } |
421 | } | |
422 | /* "Deintroduce" my variables that are leaving with this scope. */ | |
3280af22 | 423 | for (off = AvFILLp(PL_comppad_name); off > fill; off--) { |
c53d7c7d | 424 | if ((sv = svp[off]) && sv != &PL_sv_undef && SvIVX(sv) == PAD_MAX) |
3280af22 | 425 | SvIVX(sv) = PL_cop_seqmax; |
93a17b20 LW |
426 | } |
427 | } | |
428 | ||
429 | PADOFFSET | |
864dbfa3 | 430 | Perl_pad_alloc(pTHX_ I32 optype, U32 tmptype) |
79072805 | 431 | { |
11343788 | 432 | dTHR; |
79072805 LW |
433 | SV *sv; |
434 | I32 retval; | |
435 | ||
3280af22 | 436 | if (AvARRAY(PL_comppad) != PL_curpad) |
cea2e8a9 | 437 | Perl_croak(aTHX_ "panic: pad_alloc"); |
3280af22 | 438 | if (PL_pad_reset_pending) |
a0d0e21e | 439 | pad_reset(); |
ed6116ce | 440 | if (tmptype & SVs_PADMY) { |
79072805 | 441 | do { |
3280af22 | 442 | sv = *av_fetch(PL_comppad, AvFILLp(PL_comppad) + 1, TRUE); |
ed6116ce | 443 | } while (SvPADBUSY(sv)); /* need a fresh one */ |
3280af22 | 444 | retval = AvFILLp(PL_comppad); |
79072805 LW |
445 | } |
446 | else { | |
3280af22 NIS |
447 | SV **names = AvARRAY(PL_comppad_name); |
448 | SSize_t names_fill = AvFILLp(PL_comppad_name); | |
bbce6d69 | 449 | for (;;) { |
450 | /* | |
451 | * "foreach" index vars temporarily become aliases to non-"my" | |
452 | * values. Thus we must skip, not just pad values that are | |
453 | * marked as current pad values, but also those with names. | |
454 | */ | |
3280af22 NIS |
455 | if (++PL_padix <= names_fill && |
456 | (sv = names[PL_padix]) && sv != &PL_sv_undef) | |
bbce6d69 | 457 | continue; |
3280af22 | 458 | sv = *av_fetch(PL_comppad, PL_padix, TRUE); |
743e66e6 | 459 | if (!(SvFLAGS(sv) & (SVs_PADTMP|SVs_PADMY)) && !IS_PADGV(sv)) |
bbce6d69 | 460 | break; |
461 | } | |
3280af22 | 462 | retval = PL_padix; |
79072805 | 463 | } |
8990e307 | 464 | SvFLAGS(sv) |= tmptype; |
3280af22 | 465 | PL_curpad = AvARRAY(PL_comppad); |
11343788 | 466 | #ifdef USE_THREADS |
b900a521 JH |
467 | DEBUG_X(PerlIO_printf(Perl_debug_log, |
468 | "0x%"UVxf" Pad 0x%"UVxf" alloc %ld for %s\n", | |
469 | PTR2UV(thr), PTR2UV(PL_curpad), | |
22c35a8c | 470 | (long) retval, PL_op_name[optype])); |
11343788 | 471 | #else |
b900a521 JH |
472 | DEBUG_X(PerlIO_printf(Perl_debug_log, |
473 | "Pad 0x%"UVxf" alloc %ld for %s\n", | |
474 | PTR2UV(PL_curpad), | |
22c35a8c | 475 | (long) retval, PL_op_name[optype])); |
11343788 | 476 | #endif /* USE_THREADS */ |
79072805 LW |
477 | return (PADOFFSET)retval; |
478 | } | |
479 | ||
480 | SV * | |
864dbfa3 | 481 | Perl_pad_sv(pTHX_ PADOFFSET po) |
79072805 | 482 | { |
11343788 MB |
483 | dTHR; |
484 | #ifdef USE_THREADS | |
b900a521 | 485 | DEBUG_X(PerlIO_printf(Perl_debug_log, |
f1dbda3d JH |
486 | "0x%"UVxf" Pad 0x%"UVxf" sv %"IVdf"\n", |
487 | PTR2UV(thr), PTR2UV(PL_curpad), (IV)po)); | |
11343788 | 488 | #else |
79072805 | 489 | if (!po) |
cea2e8a9 | 490 | Perl_croak(aTHX_ "panic: pad_sv po"); |
97835f67 JH |
491 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%"UVxf" sv %"IVdf"\n", |
492 | PTR2UV(PL_curpad), (IV)po)); | |
11343788 | 493 | #endif /* USE_THREADS */ |
3280af22 | 494 | return PL_curpad[po]; /* eventually we'll turn this into a macro */ |
79072805 LW |
495 | } |
496 | ||
497 | void | |
864dbfa3 | 498 | Perl_pad_free(pTHX_ PADOFFSET po) |
79072805 | 499 | { |
11343788 | 500 | dTHR; |
3280af22 | 501 | if (!PL_curpad) |
a0d0e21e | 502 | return; |
3280af22 | 503 | if (AvARRAY(PL_comppad) != PL_curpad) |
cea2e8a9 | 504 | Perl_croak(aTHX_ "panic: pad_free curpad"); |
79072805 | 505 | if (!po) |
cea2e8a9 | 506 | Perl_croak(aTHX_ "panic: pad_free po"); |
11343788 | 507 | #ifdef USE_THREADS |
b900a521 | 508 | DEBUG_X(PerlIO_printf(Perl_debug_log, |
7766f137 | 509 | "0x%"UVxf" Pad 0x%"UVxf" free %"IVdf"\n", |
f1dbda3d | 510 | PTR2UV(thr), PTR2UV(PL_curpad), (IV)po)); |
11343788 | 511 | #else |
97835f67 JH |
512 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%"UVxf" free %"IVdf"\n", |
513 | PTR2UV(PL_curpad), (IV)po)); | |
11343788 | 514 | #endif /* USE_THREADS */ |
2aa1bedc | 515 | if (PL_curpad[po] && PL_curpad[po] != &PL_sv_undef) { |
3280af22 | 516 | SvPADTMP_off(PL_curpad[po]); |
2aa1bedc GS |
517 | #ifdef USE_ITHREADS |
518 | SvREADONLY_off(PL_curpad[po]); /* could be a freed constant */ | |
519 | #endif | |
520 | } | |
3280af22 NIS |
521 | if ((I32)po < PL_padix) |
522 | PL_padix = po - 1; | |
79072805 LW |
523 | } |
524 | ||
525 | void | |
864dbfa3 | 526 | Perl_pad_swipe(pTHX_ PADOFFSET po) |
79072805 | 527 | { |
11343788 | 528 | dTHR; |
3280af22 | 529 | if (AvARRAY(PL_comppad) != PL_curpad) |
cea2e8a9 | 530 | Perl_croak(aTHX_ "panic: pad_swipe curpad"); |
79072805 | 531 | if (!po) |
cea2e8a9 | 532 | Perl_croak(aTHX_ "panic: pad_swipe po"); |
11343788 | 533 | #ifdef USE_THREADS |
b900a521 | 534 | DEBUG_X(PerlIO_printf(Perl_debug_log, |
f1dbda3d JH |
535 | "0x%"UVxf" Pad 0x%"UVxf" swipe %"IVdf"\n", |
536 | PTR2UV(thr), PTR2UV(PL_curpad), (IV)po)); | |
11343788 | 537 | #else |
97835f67 JH |
538 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%"UVxf" swipe %"IVdf"\n", |
539 | PTR2UV(PL_curpad), (IV)po)); | |
11343788 | 540 | #endif /* USE_THREADS */ |
3280af22 NIS |
541 | SvPADTMP_off(PL_curpad[po]); |
542 | PL_curpad[po] = NEWSV(1107,0); | |
543 | SvPADTMP_on(PL_curpad[po]); | |
544 | if ((I32)po < PL_padix) | |
545 | PL_padix = po - 1; | |
79072805 LW |
546 | } |
547 | ||
d9bb4600 GS |
548 | /* XXX pad_reset() is currently disabled because it results in serious bugs. |
549 | * It causes pad temp TARGs to be shared between OPs. Since TARGs are pushed | |
550 | * on the stack by OPs that use them, there are several ways to get an alias | |
551 | * to a shared TARG. Such an alias will change randomly and unpredictably. | |
552 | * We avoid doing this until we can think of a Better Way. | |
553 | * GSAR 97-10-29 */ | |
79072805 | 554 | void |
864dbfa3 | 555 | Perl_pad_reset(pTHX) |
79072805 | 556 | { |
d9bb4600 | 557 | #ifdef USE_BROKEN_PAD_RESET |
11343788 | 558 | dTHR; |
79072805 LW |
559 | register I32 po; |
560 | ||
6b88bc9c | 561 | if (AvARRAY(PL_comppad) != PL_curpad) |
cea2e8a9 | 562 | Perl_croak(aTHX_ "panic: pad_reset curpad"); |
11343788 | 563 | #ifdef USE_THREADS |
b900a521 JH |
564 | DEBUG_X(PerlIO_printf(Perl_debug_log, |
565 | "0x%"UVxf" Pad 0x%"UVxf" reset\n", | |
566 | PTR2UV(thr), PTR2UV(PL_curpad))); | |
11343788 | 567 | #else |
b900a521 JH |
568 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%"UVxf" reset\n", |
569 | PTR2UV(PL_curpad))); | |
11343788 | 570 | #endif /* USE_THREADS */ |
6b88bc9c GS |
571 | if (!PL_tainting) { /* Can't mix tainted and non-tainted temporaries. */ |
572 | for (po = AvMAX(PL_comppad); po > PL_padix_floor; po--) { | |
573 | if (PL_curpad[po] && !SvIMMORTAL(PL_curpad[po])) | |
574 | SvPADTMP_off(PL_curpad[po]); | |
748a9306 | 575 | } |
6b88bc9c | 576 | PL_padix = PL_padix_floor; |
79072805 | 577 | } |
d9bb4600 | 578 | #endif |
3280af22 | 579 | PL_pad_reset_pending = FALSE; |
79072805 LW |
580 | } |
581 | ||
a863c7d1 | 582 | #ifdef USE_THREADS |
54b9620d | 583 | /* find_threadsv is not reentrant */ |
a863c7d1 | 584 | PADOFFSET |
864dbfa3 | 585 | Perl_find_threadsv(pTHX_ const char *name) |
a863c7d1 MB |
586 | { |
587 | dTHR; | |
588 | char *p; | |
589 | PADOFFSET key; | |
554b3eca | 590 | SV **svp; |
54b9620d | 591 | /* We currently only handle names of a single character */ |
533c011a | 592 | p = strchr(PL_threadsv_names, *name); |
a863c7d1 MB |
593 | if (!p) |
594 | return NOT_IN_PAD; | |
533c011a | 595 | key = p - PL_threadsv_names; |
2d8e6c8d | 596 | MUTEX_LOCK(&thr->mutex); |
54b9620d | 597 | svp = av_fetch(thr->threadsv, key, FALSE); |
2d8e6c8d GS |
598 | if (svp) |
599 | MUTEX_UNLOCK(&thr->mutex); | |
600 | else { | |
554b3eca | 601 | SV *sv = NEWSV(0, 0); |
54b9620d | 602 | av_store(thr->threadsv, key, sv); |
940cb80d | 603 | thr->threadsvp = AvARRAY(thr->threadsv); |
2d8e6c8d | 604 | MUTEX_UNLOCK(&thr->mutex); |
554b3eca MB |
605 | /* |
606 | * Some magic variables used to be automagically initialised | |
607 | * in gv_fetchpv. Those which are now per-thread magicals get | |
608 | * initialised here instead. | |
609 | */ | |
610 | switch (*name) { | |
54b9620d MB |
611 | case '_': |
612 | break; | |
554b3eca MB |
613 | case ';': |
614 | sv_setpv(sv, "\034"); | |
54b9620d | 615 | sv_magic(sv, 0, 0, name, 1); |
554b3eca | 616 | break; |
c277df42 IZ |
617 | case '&': |
618 | case '`': | |
619 | case '\'': | |
533c011a | 620 | PL_sawampersand = TRUE; |
a3f914c5 GS |
621 | /* FALL THROUGH */ |
622 | case '1': | |
623 | case '2': | |
624 | case '3': | |
625 | case '4': | |
626 | case '5': | |
627 | case '6': | |
628 | case '7': | |
629 | case '8': | |
630 | case '9': | |
c277df42 | 631 | SvREADONLY_on(sv); |
d8b5173a | 632 | /* FALL THROUGH */ |
067391ea GS |
633 | |
634 | /* XXX %! tied to Errno.pm needs to be added here. | |
635 | * See gv_fetchpv(). */ | |
636 | /* case '!': */ | |
637 | ||
54b9620d MB |
638 | default: |
639 | sv_magic(sv, 0, 0, name, 1); | |
554b3eca | 640 | } |
bf49b057 | 641 | DEBUG_S(PerlIO_printf(Perl_error_log, |
54b9620d | 642 | "find_threadsv: new SV %p for $%s%c\n", |
554b3eca MB |
643 | sv, (*name < 32) ? "^" : "", |
644 | (*name < 32) ? toCTRL(*name) : *name)); | |
a863c7d1 MB |
645 | } |
646 | return key; | |
647 | } | |
648 | #endif /* USE_THREADS */ | |
649 | ||
79072805 LW |
650 | /* Destructor */ |
651 | ||
652 | void | |
864dbfa3 | 653 | Perl_op_free(pTHX_ OP *o) |
79072805 | 654 | { |
85e6fe83 | 655 | register OP *kid, *nextkid; |
acb36ea4 | 656 | OPCODE type; |
79072805 | 657 | |
5dc0d613 | 658 | if (!o || o->op_seq == (U16)-1) |
79072805 LW |
659 | return; |
660 | ||
7934575e GS |
661 | if (o->op_private & OPpREFCOUNTED) { |
662 | switch (o->op_type) { | |
663 | case OP_LEAVESUB: | |
664 | case OP_LEAVESUBLV: | |
665 | case OP_LEAVEEVAL: | |
666 | case OP_LEAVE: | |
667 | case OP_SCOPE: | |
668 | case OP_LEAVEWRITE: | |
669 | OP_REFCNT_LOCK; | |
670 | if (OpREFCNT_dec(o)) { | |
671 | OP_REFCNT_UNLOCK; | |
672 | return; | |
673 | } | |
674 | OP_REFCNT_UNLOCK; | |
675 | break; | |
676 | default: | |
677 | break; | |
678 | } | |
679 | } | |
680 | ||
11343788 MB |
681 | if (o->op_flags & OPf_KIDS) { |
682 | for (kid = cUNOPo->op_first; kid; kid = nextkid) { | |
85e6fe83 | 683 | nextkid = kid->op_sibling; /* Get before next freeing kid */ |
79072805 | 684 | op_free(kid); |
85e6fe83 | 685 | } |
79072805 | 686 | } |
acb36ea4 GS |
687 | type = o->op_type; |
688 | if (type == OP_NULL) | |
689 | type = o->op_targ; | |
690 | ||
691 | /* COP* is not cleared by op_clear() so that we may track line | |
692 | * numbers etc even after null() */ | |
693 | if (type == OP_NEXTSTATE || type == OP_SETSTATE || type == OP_DBSTATE) | |
694 | cop_free((COP*)o); | |
695 | ||
696 | op_clear(o); | |
697 | ||
698 | #ifdef PL_OP_SLAB_ALLOC | |
699 | if ((char *) o == PL_OpPtr) | |
700 | { | |
701 | } | |
702 | #else | |
703 | Safefree(o); | |
704 | #endif | |
705 | } | |
79072805 | 706 | |
acb36ea4 GS |
707 | STATIC void |
708 | S_op_clear(pTHX_ OP *o) | |
709 | { | |
11343788 | 710 | switch (o->op_type) { |
acb36ea4 GS |
711 | case OP_NULL: /* Was holding old type, if any. */ |
712 | case OP_ENTEREVAL: /* Was holding hints. */ | |
713 | #ifdef USE_THREADS | |
714 | case OP_THREADSV: /* Was holding index into thr->threadsv AV. */ | |
715 | #endif | |
716 | o->op_targ = 0; | |
a0d0e21e | 717 | break; |
554b3eca | 718 | #ifdef USE_THREADS |
8dd3ba40 SM |
719 | case OP_ENTERITER: |
720 | if (!(o->op_flags & OPf_SPECIAL)) | |
721 | break; | |
722 | /* FALL THROUGH */ | |
554b3eca | 723 | #endif /* USE_THREADS */ |
a6006777 | 724 | default: |
ac4c12e7 | 725 | if (!(o->op_flags & OPf_REF) |
0b94c7bb | 726 | || (PL_check[o->op_type] != MEMBER_TO_FPTR(Perl_ck_ftst))) |
a6006777 | 727 | break; |
728 | /* FALL THROUGH */ | |
463ee0b2 | 729 | case OP_GVSV: |
79072805 | 730 | case OP_GV: |
a6006777 | 731 | case OP_AELEMFAST: |
350de78d | 732 | #ifdef USE_ITHREADS |
971a9dd3 GS |
733 | if (cPADOPo->op_padix > 0) { |
734 | if (PL_curpad) { | |
638eceb6 | 735 | GV *gv = cGVOPo_gv; |
971a9dd3 GS |
736 | pad_swipe(cPADOPo->op_padix); |
737 | /* No GvIN_PAD_off(gv) here, because other references may still | |
738 | * exist on the pad */ | |
739 | SvREFCNT_dec(gv); | |
740 | } | |
741 | cPADOPo->op_padix = 0; | |
742 | } | |
350de78d | 743 | #else |
971a9dd3 | 744 | SvREFCNT_dec(cSVOPo->op_sv); |
7934575e | 745 | cSVOPo->op_sv = Nullsv; |
350de78d | 746 | #endif |
79072805 LW |
747 | break; |
748 | case OP_CONST: | |
11343788 | 749 | SvREFCNT_dec(cSVOPo->op_sv); |
acb36ea4 | 750 | cSVOPo->op_sv = Nullsv; |
79072805 | 751 | break; |
748a9306 LW |
752 | case OP_GOTO: |
753 | case OP_NEXT: | |
754 | case OP_LAST: | |
755 | case OP_REDO: | |
11343788 | 756 | if (o->op_flags & (OPf_SPECIAL|OPf_STACKED|OPf_KIDS)) |
748a9306 LW |
757 | break; |
758 | /* FALL THROUGH */ | |
a0d0e21e | 759 | case OP_TRANS: |
acb36ea4 | 760 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { |
a0ed51b3 | 761 | SvREFCNT_dec(cSVOPo->op_sv); |
acb36ea4 GS |
762 | cSVOPo->op_sv = Nullsv; |
763 | } | |
764 | else { | |
a0ed51b3 | 765 | Safefree(cPVOPo->op_pv); |
acb36ea4 GS |
766 | cPVOPo->op_pv = Nullch; |
767 | } | |
a0d0e21e LW |
768 | break; |
769 | case OP_SUBST: | |
11343788 | 770 | op_free(cPMOPo->op_pmreplroot); |
971a9dd3 | 771 | goto clear_pmop; |
748a9306 | 772 | case OP_PUSHRE: |
971a9dd3 GS |
773 | #ifdef USE_ITHREADS |
774 | if ((PADOFFSET)cPMOPo->op_pmreplroot) { | |
775 | if (PL_curpad) { | |
776 | GV *gv = (GV*)PL_curpad[(PADOFFSET)cPMOPo->op_pmreplroot]; | |
777 | pad_swipe((PADOFFSET)cPMOPo->op_pmreplroot); | |
778 | /* No GvIN_PAD_off(gv) here, because other references may still | |
779 | * exist on the pad */ | |
780 | SvREFCNT_dec(gv); | |
781 | } | |
782 | } | |
783 | #else | |
784 | SvREFCNT_dec((SV*)cPMOPo->op_pmreplroot); | |
785 | #endif | |
786 | /* FALL THROUGH */ | |
a0d0e21e | 787 | case OP_MATCH: |
8782bef2 | 788 | case OP_QR: |
971a9dd3 GS |
789 | clear_pmop: |
790 | cPMOPo->op_pmreplroot = Nullop; | |
c277df42 | 791 | ReREFCNT_dec(cPMOPo->op_pmregexp); |
acb36ea4 | 792 | cPMOPo->op_pmregexp = (REGEXP*)NULL; |
a0d0e21e | 793 | break; |
79072805 LW |
794 | } |
795 | ||
743e66e6 | 796 | if (o->op_targ > 0) { |
11343788 | 797 | pad_free(o->op_targ); |
743e66e6 GS |
798 | o->op_targ = 0; |
799 | } | |
79072805 LW |
800 | } |
801 | ||
76e3520e | 802 | STATIC void |
3eb57f73 HS |
803 | S_cop_free(pTHX_ COP* cop) |
804 | { | |
805 | Safefree(cop->cop_label); | |
57843af0 GS |
806 | #ifdef USE_ITHREADS |
807 | Safefree(CopFILE(cop)); /* XXXXX share in a pvtable? */ | |
11faa288 | 808 | Safefree(CopSTASHPV(cop)); /* XXXXX share in a pvtable? */ |
57843af0 | 809 | #else |
11faa288 | 810 | /* NOTE: COP.cop_stash is not refcounted */ |
cc49e20b | 811 | SvREFCNT_dec(CopFILEGV(cop)); |
57843af0 | 812 | #endif |
0453d815 | 813 | if (! specialWARN(cop->cop_warnings)) |
3eb57f73 HS |
814 | SvREFCNT_dec(cop->cop_warnings); |
815 | } | |
816 | ||
817 | STATIC void | |
cea2e8a9 | 818 | S_null(pTHX_ OP *o) |
8990e307 | 819 | { |
acb36ea4 GS |
820 | if (o->op_type == OP_NULL) |
821 | return; | |
822 | op_clear(o); | |
11343788 MB |
823 | o->op_targ = o->op_type; |
824 | o->op_type = OP_NULL; | |
22c35a8c | 825 | o->op_ppaddr = PL_ppaddr[OP_NULL]; |
8990e307 LW |
826 | } |
827 | ||
79072805 LW |
828 | /* Contextualizers */ |
829 | ||
463ee0b2 | 830 | #define LINKLIST(o) ((o)->op_next ? (o)->op_next : linklist((OP*)o)) |
79072805 LW |
831 | |
832 | OP * | |
864dbfa3 | 833 | Perl_linklist(pTHX_ OP *o) |
79072805 LW |
834 | { |
835 | register OP *kid; | |
836 | ||
11343788 MB |
837 | if (o->op_next) |
838 | return o->op_next; | |
79072805 LW |
839 | |
840 | /* establish postfix order */ | |
11343788 MB |
841 | if (cUNOPo->op_first) { |
842 | o->op_next = LINKLIST(cUNOPo->op_first); | |
843 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) { | |
79072805 LW |
844 | if (kid->op_sibling) |
845 | kid->op_next = LINKLIST(kid->op_sibling); | |
846 | else | |
11343788 | 847 | kid->op_next = o; |
79072805 LW |
848 | } |
849 | } | |
850 | else | |
11343788 | 851 | o->op_next = o; |
79072805 | 852 | |
11343788 | 853 | return o->op_next; |
79072805 LW |
854 | } |
855 | ||
856 | OP * | |
864dbfa3 | 857 | Perl_scalarkids(pTHX_ OP *o) |
79072805 LW |
858 | { |
859 | OP *kid; | |
11343788 MB |
860 | if (o && o->op_flags & OPf_KIDS) { |
861 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
79072805 LW |
862 | scalar(kid); |
863 | } | |
11343788 | 864 | return o; |
79072805 LW |
865 | } |
866 | ||
76e3520e | 867 | STATIC OP * |
cea2e8a9 | 868 | S_scalarboolean(pTHX_ OP *o) |
8990e307 | 869 | { |
d008e5eb | 870 | if (o->op_type == OP_SASSIGN && cBINOPo->op_first->op_type == OP_CONST) { |
0f15f207 | 871 | dTHR; |
d008e5eb | 872 | if (ckWARN(WARN_SYNTAX)) { |
57843af0 | 873 | line_t oldline = CopLINE(PL_curcop); |
a0d0e21e | 874 | |
d008e5eb | 875 | if (PL_copline != NOLINE) |
57843af0 | 876 | CopLINE_set(PL_curcop, PL_copline); |
cea2e8a9 | 877 | Perl_warner(aTHX_ WARN_SYNTAX, "Found = in conditional, should be =="); |
57843af0 | 878 | CopLINE_set(PL_curcop, oldline); |
d008e5eb | 879 | } |
a0d0e21e | 880 | } |
11343788 | 881 | return scalar(o); |
8990e307 LW |
882 | } |
883 | ||
884 | OP * | |
864dbfa3 | 885 | Perl_scalar(pTHX_ OP *o) |
79072805 LW |
886 | { |
887 | OP *kid; | |
888 | ||
a0d0e21e | 889 | /* assumes no premature commitment */ |
3280af22 | 890 | if (!o || (o->op_flags & OPf_WANT) || PL_error_count |
5dc0d613 | 891 | || o->op_type == OP_RETURN) |
7e363e51 | 892 | { |
11343788 | 893 | return o; |
7e363e51 | 894 | } |
79072805 | 895 | |
5dc0d613 | 896 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_SCALAR; |
79072805 | 897 | |
11343788 | 898 | switch (o->op_type) { |
79072805 | 899 | case OP_REPEAT: |
11343788 MB |
900 | if (o->op_private & OPpREPEAT_DOLIST) |
901 | null(((LISTOP*)cBINOPo->op_first)->op_first); | |
902 | scalar(cBINOPo->op_first); | |
8990e307 | 903 | break; |
79072805 LW |
904 | case OP_OR: |
905 | case OP_AND: | |
906 | case OP_COND_EXPR: | |
11343788 | 907 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
8990e307 | 908 | scalar(kid); |
79072805 | 909 | break; |
a0d0e21e | 910 | case OP_SPLIT: |
11343788 | 911 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e LW |
912 | if (!kPMOP->op_pmreplroot) |
913 | deprecate("implicit split to @_"); | |
914 | } | |
915 | /* FALL THROUGH */ | |
79072805 | 916 | case OP_MATCH: |
8782bef2 | 917 | case OP_QR: |
79072805 LW |
918 | case OP_SUBST: |
919 | case OP_NULL: | |
8990e307 | 920 | default: |
11343788 MB |
921 | if (o->op_flags & OPf_KIDS) { |
922 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) | |
8990e307 LW |
923 | scalar(kid); |
924 | } | |
79072805 LW |
925 | break; |
926 | case OP_LEAVE: | |
927 | case OP_LEAVETRY: | |
5dc0d613 | 928 | kid = cLISTOPo->op_first; |
54310121 | 929 | scalar(kid); |
930 | while (kid = kid->op_sibling) { | |
931 | if (kid->op_sibling) | |
932 | scalarvoid(kid); | |
933 | else | |
934 | scalar(kid); | |
935 | } | |
3280af22 | 936 | WITH_THR(PL_curcop = &PL_compiling); |
54310121 | 937 | break; |
748a9306 | 938 | case OP_SCOPE: |
79072805 | 939 | case OP_LINESEQ: |
8990e307 | 940 | case OP_LIST: |
11343788 | 941 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
942 | if (kid->op_sibling) |
943 | scalarvoid(kid); | |
944 | else | |
945 | scalar(kid); | |
946 | } | |
3280af22 | 947 | WITH_THR(PL_curcop = &PL_compiling); |
79072805 LW |
948 | break; |
949 | } | |
11343788 | 950 | return o; |
79072805 LW |
951 | } |
952 | ||
953 | OP * | |
864dbfa3 | 954 | Perl_scalarvoid(pTHX_ OP *o) |
79072805 LW |
955 | { |
956 | OP *kid; | |
8990e307 LW |
957 | char* useless = 0; |
958 | SV* sv; | |
2ebea0a1 GS |
959 | U8 want; |
960 | ||
acb36ea4 GS |
961 | if (o->op_type == OP_NEXTSTATE |
962 | || o->op_type == OP_SETSTATE | |
963 | || o->op_type == OP_DBSTATE | |
964 | || (o->op_type == OP_NULL && (o->op_targ == OP_NEXTSTATE | |
965 | || o->op_targ == OP_SETSTATE | |
966 | || o->op_targ == OP_DBSTATE))) | |
2ebea0a1 GS |
967 | { |
968 | dTHR; | |
969 | PL_curcop = (COP*)o; /* for warning below */ | |
970 | } | |
79072805 | 971 | |
54310121 | 972 | /* assumes no premature commitment */ |
2ebea0a1 GS |
973 | want = o->op_flags & OPf_WANT; |
974 | if ((want && want != OPf_WANT_SCALAR) || PL_error_count | |
5dc0d613 | 975 | || o->op_type == OP_RETURN) |
7e363e51 | 976 | { |
11343788 | 977 | return o; |
7e363e51 | 978 | } |
79072805 | 979 | |
b162f9ea | 980 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
981 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
982 | { | |
b162f9ea | 983 | return scalar(o); /* As if inside SASSIGN */ |
7e363e51 | 984 | } |
b162f9ea | 985 | |
5dc0d613 | 986 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_VOID; |
79072805 | 987 | |
11343788 | 988 | switch (o->op_type) { |
79072805 | 989 | default: |
22c35a8c | 990 | if (!(PL_opargs[o->op_type] & OA_FOLDCONST)) |
8990e307 | 991 | break; |
36477c24 | 992 | /* FALL THROUGH */ |
993 | case OP_REPEAT: | |
11343788 | 994 | if (o->op_flags & OPf_STACKED) |
8990e307 | 995 | break; |
5d82c453 GA |
996 | goto func_ops; |
997 | case OP_SUBSTR: | |
998 | if (o->op_private == 4) | |
999 | break; | |
8990e307 LW |
1000 | /* FALL THROUGH */ |
1001 | case OP_GVSV: | |
1002 | case OP_WANTARRAY: | |
1003 | case OP_GV: | |
1004 | case OP_PADSV: | |
1005 | case OP_PADAV: | |
1006 | case OP_PADHV: | |
1007 | case OP_PADANY: | |
1008 | case OP_AV2ARYLEN: | |
8990e307 | 1009 | case OP_REF: |
a0d0e21e LW |
1010 | case OP_REFGEN: |
1011 | case OP_SREFGEN: | |
8990e307 LW |
1012 | case OP_DEFINED: |
1013 | case OP_HEX: | |
1014 | case OP_OCT: | |
1015 | case OP_LENGTH: | |
8990e307 LW |
1016 | case OP_VEC: |
1017 | case OP_INDEX: | |
1018 | case OP_RINDEX: | |
1019 | case OP_SPRINTF: | |
1020 | case OP_AELEM: | |
1021 | case OP_AELEMFAST: | |
1022 | case OP_ASLICE: | |
8990e307 LW |
1023 | case OP_HELEM: |
1024 | case OP_HSLICE: | |
1025 | case OP_UNPACK: | |
1026 | case OP_PACK: | |
8990e307 LW |
1027 | case OP_JOIN: |
1028 | case OP_LSLICE: | |
1029 | case OP_ANONLIST: | |
1030 | case OP_ANONHASH: | |
1031 | case OP_SORT: | |
1032 | case OP_REVERSE: | |
1033 | case OP_RANGE: | |
1034 | case OP_FLIP: | |
1035 | case OP_FLOP: | |
1036 | case OP_CALLER: | |
1037 | case OP_FILENO: | |
1038 | case OP_EOF: | |
1039 | case OP_TELL: | |
1040 | case OP_GETSOCKNAME: | |
1041 | case OP_GETPEERNAME: | |
1042 | case OP_READLINK: | |
1043 | case OP_TELLDIR: | |
1044 | case OP_GETPPID: | |
1045 | case OP_GETPGRP: | |
1046 | case OP_GETPRIORITY: | |
1047 | case OP_TIME: | |
1048 | case OP_TMS: | |
1049 | case OP_LOCALTIME: | |
1050 | case OP_GMTIME: | |
1051 | case OP_GHBYNAME: | |
1052 | case OP_GHBYADDR: | |
1053 | case OP_GHOSTENT: | |
1054 | case OP_GNBYNAME: | |
1055 | case OP_GNBYADDR: | |
1056 | case OP_GNETENT: | |
1057 | case OP_GPBYNAME: | |
1058 | case OP_GPBYNUMBER: | |
1059 | case OP_GPROTOENT: | |
1060 | case OP_GSBYNAME: | |
1061 | case OP_GSBYPORT: | |
1062 | case OP_GSERVENT: | |
1063 | case OP_GPWNAM: | |
1064 | case OP_GPWUID: | |
1065 | case OP_GGRNAM: | |
1066 | case OP_GGRGID: | |
1067 | case OP_GETLOGIN: | |
5d82c453 | 1068 | func_ops: |
11343788 | 1069 | if (!(o->op_private & OPpLVAL_INTRO)) |
22c35a8c | 1070 | useless = PL_op_desc[o->op_type]; |
8990e307 LW |
1071 | break; |
1072 | ||
1073 | case OP_RV2GV: | |
1074 | case OP_RV2SV: | |
1075 | case OP_RV2AV: | |
1076 | case OP_RV2HV: | |
11343788 MB |
1077 | if (!(o->op_private & OPpLVAL_INTRO) && |
1078 | (!o->op_sibling || o->op_sibling->op_type != OP_READLINE)) | |
8990e307 LW |
1079 | useless = "a variable"; |
1080 | break; | |
79072805 LW |
1081 | |
1082 | case OP_CONST: | |
7766f137 | 1083 | sv = cSVOPo_sv; |
7a52d87a GS |
1084 | if (cSVOPo->op_private & OPpCONST_STRICT) |
1085 | no_bareword_allowed(o); | |
1086 | else { | |
d008e5eb GS |
1087 | dTHR; |
1088 | if (ckWARN(WARN_VOID)) { | |
1089 | useless = "a constant"; | |
1090 | if (SvNIOK(sv) && (SvNV(sv) == 0.0 || SvNV(sv) == 1.0)) | |
1091 | useless = 0; | |
1092 | else if (SvPOK(sv)) { | |
1093 | if (strnEQ(SvPVX(sv), "di", 2) || | |
1094 | strnEQ(SvPVX(sv), "ds", 2) || | |
1095 | strnEQ(SvPVX(sv), "ig", 2)) | |
1096 | useless = 0; | |
1097 | } | |
8990e307 LW |
1098 | } |
1099 | } | |
acb36ea4 | 1100 | null(o); /* don't execute or even remember it */ |
79072805 LW |
1101 | break; |
1102 | ||
1103 | case OP_POSTINC: | |
11343788 | 1104 | o->op_type = OP_PREINC; /* pre-increment is faster */ |
22c35a8c | 1105 | o->op_ppaddr = PL_ppaddr[OP_PREINC]; |
79072805 LW |
1106 | break; |
1107 | ||
1108 | case OP_POSTDEC: | |
11343788 | 1109 | o->op_type = OP_PREDEC; /* pre-decrement is faster */ |
22c35a8c | 1110 | o->op_ppaddr = PL_ppaddr[OP_PREDEC]; |
79072805 LW |
1111 | break; |
1112 | ||
79072805 LW |
1113 | case OP_OR: |
1114 | case OP_AND: | |
1115 | case OP_COND_EXPR: | |
11343788 | 1116 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
1117 | scalarvoid(kid); |
1118 | break; | |
5aabfad6 | 1119 | |
a0d0e21e | 1120 | case OP_NULL: |
11343788 | 1121 | if (o->op_flags & OPf_STACKED) |
a0d0e21e | 1122 | break; |
5aabfad6 | 1123 | /* FALL THROUGH */ |
2ebea0a1 GS |
1124 | case OP_NEXTSTATE: |
1125 | case OP_DBSTATE: | |
79072805 LW |
1126 | case OP_ENTERTRY: |
1127 | case OP_ENTER: | |
1128 | case OP_SCALAR: | |
11343788 | 1129 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1130 | break; |
54310121 | 1131 | /* FALL THROUGH */ |
463ee0b2 | 1132 | case OP_SCOPE: |
79072805 LW |
1133 | case OP_LEAVE: |
1134 | case OP_LEAVETRY: | |
a0d0e21e | 1135 | case OP_LEAVELOOP: |
79072805 | 1136 | case OP_LINESEQ: |
79072805 | 1137 | case OP_LIST: |
11343788 | 1138 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
1139 | scalarvoid(kid); |
1140 | break; | |
c90c0ff4 | 1141 | case OP_ENTEREVAL: |
5196be3e | 1142 | scalarkids(o); |
c90c0ff4 | 1143 | break; |
5aabfad6 | 1144 | case OP_REQUIRE: |
c90c0ff4 | 1145 | /* all requires must return a boolean value */ |
5196be3e MB |
1146 | o->op_flags &= ~OPf_WANT; |
1147 | return scalar(o); | |
a0d0e21e | 1148 | case OP_SPLIT: |
11343788 | 1149 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e LW |
1150 | if (!kPMOP->op_pmreplroot) |
1151 | deprecate("implicit split to @_"); | |
1152 | } | |
1153 | break; | |
79072805 | 1154 | } |
d008e5eb GS |
1155 | if (useless) { |
1156 | dTHR; | |
1157 | if (ckWARN(WARN_VOID)) | |
cea2e8a9 | 1158 | Perl_warner(aTHX_ WARN_VOID, "Useless use of %s in void context", useless); |
d008e5eb | 1159 | } |
11343788 | 1160 | return o; |
79072805 LW |
1161 | } |
1162 | ||
1163 | OP * | |
864dbfa3 | 1164 | Perl_listkids(pTHX_ OP *o) |
79072805 LW |
1165 | { |
1166 | OP *kid; | |
11343788 MB |
1167 | if (o && o->op_flags & OPf_KIDS) { |
1168 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
79072805 LW |
1169 | list(kid); |
1170 | } | |
11343788 | 1171 | return o; |
79072805 LW |
1172 | } |
1173 | ||
1174 | OP * | |
864dbfa3 | 1175 | Perl_list(pTHX_ OP *o) |
79072805 LW |
1176 | { |
1177 | OP *kid; | |
1178 | ||
a0d0e21e | 1179 | /* assumes no premature commitment */ |
3280af22 | 1180 | if (!o || (o->op_flags & OPf_WANT) || PL_error_count |
5dc0d613 | 1181 | || o->op_type == OP_RETURN) |
7e363e51 | 1182 | { |
11343788 | 1183 | return o; |
7e363e51 | 1184 | } |
79072805 | 1185 | |
b162f9ea | 1186 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
1187 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
1188 | { | |
b162f9ea | 1189 | return o; /* As if inside SASSIGN */ |
7e363e51 | 1190 | } |
b162f9ea | 1191 | |
5dc0d613 | 1192 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_LIST; |
79072805 | 1193 | |
11343788 | 1194 | switch (o->op_type) { |
79072805 LW |
1195 | case OP_FLOP: |
1196 | case OP_REPEAT: | |
11343788 | 1197 | list(cBINOPo->op_first); |
79072805 LW |
1198 | break; |
1199 | case OP_OR: | |
1200 | case OP_AND: | |
1201 | case OP_COND_EXPR: | |
11343788 | 1202 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
1203 | list(kid); |
1204 | break; | |
1205 | default: | |
1206 | case OP_MATCH: | |
8782bef2 | 1207 | case OP_QR: |
79072805 LW |
1208 | case OP_SUBST: |
1209 | case OP_NULL: | |
11343788 | 1210 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1211 | break; |
11343788 MB |
1212 | if (!o->op_next && cUNOPo->op_first->op_type == OP_FLOP) { |
1213 | list(cBINOPo->op_first); | |
1214 | return gen_constant_list(o); | |
79072805 LW |
1215 | } |
1216 | case OP_LIST: | |
11343788 | 1217 | listkids(o); |
79072805 LW |
1218 | break; |
1219 | case OP_LEAVE: | |
1220 | case OP_LEAVETRY: | |
5dc0d613 | 1221 | kid = cLISTOPo->op_first; |
54310121 | 1222 | list(kid); |
1223 | while (kid = kid->op_sibling) { | |
1224 | if (kid->op_sibling) | |
1225 | scalarvoid(kid); | |
1226 | else | |
1227 | list(kid); | |
1228 | } | |
3280af22 | 1229 | WITH_THR(PL_curcop = &PL_compiling); |
54310121 | 1230 | break; |
748a9306 | 1231 | case OP_SCOPE: |
79072805 | 1232 | case OP_LINESEQ: |
11343788 | 1233 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
1234 | if (kid->op_sibling) |
1235 | scalarvoid(kid); | |
1236 | else | |
1237 | list(kid); | |
1238 | } | |
3280af22 | 1239 | WITH_THR(PL_curcop = &PL_compiling); |
79072805 | 1240 | break; |
c90c0ff4 | 1241 | case OP_REQUIRE: |
1242 | /* all requires must return a boolean value */ | |
5196be3e MB |
1243 | o->op_flags &= ~OPf_WANT; |
1244 | return scalar(o); | |
79072805 | 1245 | } |
11343788 | 1246 | return o; |
79072805 LW |
1247 | } |
1248 | ||
1249 | OP * | |
864dbfa3 | 1250 | Perl_scalarseq(pTHX_ OP *o) |
79072805 LW |
1251 | { |
1252 | OP *kid; | |
1253 | ||
11343788 MB |
1254 | if (o) { |
1255 | if (o->op_type == OP_LINESEQ || | |
1256 | o->op_type == OP_SCOPE || | |
1257 | o->op_type == OP_LEAVE || | |
1258 | o->op_type == OP_LEAVETRY) | |
463ee0b2 | 1259 | { |
0f15f207 | 1260 | dTHR; |
11343788 | 1261 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
ed6116ce | 1262 | if (kid->op_sibling) { |
463ee0b2 | 1263 | scalarvoid(kid); |
ed6116ce | 1264 | } |
463ee0b2 | 1265 | } |
3280af22 | 1266 | PL_curcop = &PL_compiling; |
79072805 | 1267 | } |
11343788 | 1268 | o->op_flags &= ~OPf_PARENS; |
3280af22 | 1269 | if (PL_hints & HINT_BLOCK_SCOPE) |
11343788 | 1270 | o->op_flags |= OPf_PARENS; |
79072805 | 1271 | } |
8990e307 | 1272 | else |
11343788 MB |
1273 | o = newOP(OP_STUB, 0); |
1274 | return o; | |
79072805 LW |
1275 | } |
1276 | ||
76e3520e | 1277 | STATIC OP * |
cea2e8a9 | 1278 | S_modkids(pTHX_ OP *o, I32 type) |
79072805 LW |
1279 | { |
1280 | OP *kid; | |
11343788 MB |
1281 | if (o && o->op_flags & OPf_KIDS) { |
1282 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
463ee0b2 | 1283 | mod(kid, type); |
79072805 | 1284 | } |
11343788 | 1285 | return o; |
79072805 LW |
1286 | } |
1287 | ||
79072805 | 1288 | OP * |
864dbfa3 | 1289 | Perl_mod(pTHX_ OP *o, I32 type) |
79072805 | 1290 | { |
11343788 | 1291 | dTHR; |
79072805 LW |
1292 | OP *kid; |
1293 | SV *sv; | |
2d8e6c8d | 1294 | STRLEN n_a; |
79072805 | 1295 | |
3280af22 | 1296 | if (!o || PL_error_count) |
11343788 | 1297 | return o; |
79072805 | 1298 | |
b162f9ea | 1299 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
1300 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
1301 | { | |
b162f9ea | 1302 | return o; |
7e363e51 | 1303 | } |
b162f9ea | 1304 | |
11343788 | 1305 | switch (o->op_type) { |
68dc0745 | 1306 | case OP_UNDEF: |
3280af22 | 1307 | PL_modcount++; |
5dc0d613 | 1308 | return o; |
a0d0e21e | 1309 | case OP_CONST: |
11343788 | 1310 | if (!(o->op_private & (OPpCONST_ARYBASE))) |
a0d0e21e | 1311 | goto nomod; |
3280af22 | 1312 | if (PL_eval_start && PL_eval_start->op_type == OP_CONST) { |
7766f137 | 1313 | PL_compiling.cop_arybase = (I32)SvIV(cSVOPx(PL_eval_start)->op_sv); |
3280af22 | 1314 | PL_eval_start = 0; |
a0d0e21e LW |
1315 | } |
1316 | else if (!type) { | |
3280af22 NIS |
1317 | SAVEI32(PL_compiling.cop_arybase); |
1318 | PL_compiling.cop_arybase = 0; | |
a0d0e21e LW |
1319 | } |
1320 | else if (type == OP_REFGEN) | |
1321 | goto nomod; | |
1322 | else | |
cea2e8a9 | 1323 | Perl_croak(aTHX_ "That use of $[ is unsupported"); |
a0d0e21e | 1324 | break; |
5f05dabc | 1325 | case OP_STUB: |
5196be3e | 1326 | if (o->op_flags & OPf_PARENS) |
5f05dabc | 1327 | break; |
1328 | goto nomod; | |
a0d0e21e LW |
1329 | case OP_ENTERSUB: |
1330 | if ((type == OP_UNDEF || type == OP_REFGEN) && | |
11343788 MB |
1331 | !(o->op_flags & OPf_STACKED)) { |
1332 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
22c35a8c | 1333 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 MB |
1334 | assert(cUNOPo->op_first->op_type == OP_NULL); |
1335 | null(((LISTOP*)cUNOPo->op_first)->op_first);/* disable pushmark */ | |
79072805 LW |
1336 | break; |
1337 | } | |
cd06dffe GS |
1338 | else { /* lvalue subroutine call */ |
1339 | o->op_private |= OPpLVAL_INTRO; | |
4978d6d9 | 1340 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) { |
cd06dffe GS |
1341 | /* Backward compatibility mode: */ |
1342 | o->op_private |= OPpENTERSUB_INARGS; | |
1343 | break; | |
1344 | } | |
1345 | else { /* Compile-time error message: */ | |
1346 | OP *kid = cUNOPo->op_first; | |
1347 | CV *cv; | |
1348 | OP *okid; | |
1349 | ||
1350 | if (kid->op_type == OP_PUSHMARK) | |
1351 | goto skip_kids; | |
1352 | if (kid->op_type != OP_NULL || kid->op_targ != OP_LIST) | |
1353 | Perl_croak(aTHX_ | |
1354 | "panic: unexpected lvalue entersub " | |
1355 | "args: type/targ %ld:%ld", | |
1356 | (long)kid->op_type,kid->op_targ); | |
1357 | kid = kLISTOP->op_first; | |
1358 | skip_kids: | |
1359 | while (kid->op_sibling) | |
1360 | kid = kid->op_sibling; | |
1361 | if (!(kid->op_type == OP_NULL && kid->op_targ == OP_RV2CV)) { | |
1362 | /* Indirect call */ | |
1363 | if (kid->op_type == OP_METHOD_NAMED | |
1364 | || kid->op_type == OP_METHOD) | |
1365 | { | |
349fd7b7 | 1366 | OP *newop; |
cd06dffe GS |
1367 | |
1368 | if (kid->op_sibling || kid->op_next != kid) { | |
1369 | yyerror("panic: unexpected optree near method call"); | |
1370 | break; | |
1371 | } | |
1372 | ||
349fd7b7 GS |
1373 | NewOp(1101, newop, 1, OP); |
1374 | newop->op_type = OP_RV2CV; | |
1375 | newop->op_ppaddr = PL_ppaddr[OP_RV2CV]; | |
1376 | newop->op_next = newop; | |
1377 | kid->op_sibling = newop; | |
1378 | newop->op_private |= OPpLVAL_INTRO; | |
cd06dffe GS |
1379 | break; |
1380 | } | |
1381 | ||
1382 | if (kid->op_type != OP_RV2CV) | |
1383 | Perl_croak(aTHX_ | |
1384 | "panic: unexpected lvalue entersub " | |
1385 | "entry via type/targ %ld:%ld", | |
1386 | (long)kid->op_type,kid->op_targ); | |
1387 | kid->op_private |= OPpLVAL_INTRO; | |
1388 | break; /* Postpone until runtime */ | |
1389 | } | |
1390 | ||
1391 | okid = kid; | |
1392 | kid = kUNOP->op_first; | |
1393 | if (kid->op_type == OP_NULL && kid->op_targ == OP_RV2SV) | |
1394 | kid = kUNOP->op_first; | |
1395 | if (kid->op_type == OP_NULL) | |
1396 | Perl_croak(aTHX_ | |
1397 | "Unexpected constant lvalue entersub " | |
1398 | "entry via type/targ %ld:%ld", | |
1399 | (long)kid->op_type,kid->op_targ); | |
1400 | if (kid->op_type != OP_GV) { | |
1401 | /* Restore RV2CV to check lvalueness */ | |
1402 | restore_2cv: | |
1403 | if (kid->op_next && kid->op_next != kid) { /* Happens? */ | |
1404 | okid->op_next = kid->op_next; | |
1405 | kid->op_next = okid; | |
1406 | } | |
1407 | else | |
1408 | okid->op_next = Nullop; | |
1409 | okid->op_type = OP_RV2CV; | |
1410 | okid->op_targ = 0; | |
1411 | okid->op_ppaddr = PL_ppaddr[OP_RV2CV]; | |
1412 | okid->op_private |= OPpLVAL_INTRO; | |
1413 | break; | |
1414 | } | |
1415 | ||
638eceb6 | 1416 | cv = GvCV(kGVOP_gv); |
cd06dffe GS |
1417 | if (!cv) |
1418 | goto restore_2cv; | |
1419 | if (CvLVALUE(cv)) | |
1420 | break; | |
1421 | } | |
1422 | } | |
79072805 LW |
1423 | /* FALL THROUGH */ |
1424 | default: | |
a0d0e21e LW |
1425 | nomod: |
1426 | /* grep, foreach, subcalls, refgen */ | |
1427 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) | |
1428 | break; | |
cea2e8a9 | 1429 | yyerror(Perl_form(aTHX_ "Can't modify %s in %s", |
638bc118 | 1430 | (o->op_type == OP_NULL && (o->op_flags & OPf_SPECIAL) |
cd06dffe GS |
1431 | ? "do block" |
1432 | : (o->op_type == OP_ENTERSUB | |
1433 | ? "non-lvalue subroutine call" | |
1434 | : PL_op_desc[o->op_type])), | |
22c35a8c | 1435 | type ? PL_op_desc[type] : "local")); |
11343788 | 1436 | return o; |
79072805 | 1437 | |
a0d0e21e LW |
1438 | case OP_PREINC: |
1439 | case OP_PREDEC: | |
1440 | case OP_POW: | |
1441 | case OP_MULTIPLY: | |
1442 | case OP_DIVIDE: | |
1443 | case OP_MODULO: | |
1444 | case OP_REPEAT: | |
1445 | case OP_ADD: | |
1446 | case OP_SUBTRACT: | |
1447 | case OP_CONCAT: | |
1448 | case OP_LEFT_SHIFT: | |
1449 | case OP_RIGHT_SHIFT: | |
1450 | case OP_BIT_AND: | |
1451 | case OP_BIT_XOR: | |
1452 | case OP_BIT_OR: | |
1453 | case OP_I_MULTIPLY: | |
1454 | case OP_I_DIVIDE: | |
1455 | case OP_I_MODULO: | |
1456 | case OP_I_ADD: | |
1457 | case OP_I_SUBTRACT: | |
11343788 | 1458 | if (!(o->op_flags & OPf_STACKED)) |
a0d0e21e | 1459 | goto nomod; |
3280af22 | 1460 | PL_modcount++; |
a0d0e21e LW |
1461 | break; |
1462 | ||
79072805 | 1463 | case OP_COND_EXPR: |
11343788 | 1464 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 | 1465 | mod(kid, type); |
79072805 LW |
1466 | break; |
1467 | ||
1468 | case OP_RV2AV: | |
1469 | case OP_RV2HV: | |
93af7a87 | 1470 | if (!type && cUNOPo->op_first->op_type != OP_GV) |
cea2e8a9 | 1471 | Perl_croak(aTHX_ "Can't localize through a reference"); |
11343788 | 1472 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) { |
3280af22 | 1473 | PL_modcount = 10000; |
11343788 | 1474 | return o; /* Treat \(@foo) like ordinary list. */ |
748a9306 LW |
1475 | } |
1476 | /* FALL THROUGH */ | |
79072805 | 1477 | case OP_RV2GV: |
5dc0d613 | 1478 | if (scalar_mod_type(o, type)) |
3fe9a6f1 | 1479 | goto nomod; |
11343788 | 1480 | ref(cUNOPo->op_first, o->op_type); |
79072805 LW |
1481 | /* FALL THROUGH */ |
1482 | case OP_AASSIGN: | |
1483 | case OP_ASLICE: | |
1484 | case OP_HSLICE: | |
93a17b20 LW |
1485 | case OP_NEXTSTATE: |
1486 | case OP_DBSTATE: | |
a0d0e21e LW |
1487 | case OP_REFGEN: |
1488 | case OP_CHOMP: | |
3280af22 | 1489 | PL_modcount = 10000; |
79072805 | 1490 | break; |
463ee0b2 | 1491 | case OP_RV2SV: |
11343788 | 1492 | if (!type && cUNOPo->op_first->op_type != OP_GV) |
cea2e8a9 | 1493 | Perl_croak(aTHX_ "Can't localize through a reference"); |
aeea060c | 1494 | ref(cUNOPo->op_first, o->op_type); |
463ee0b2 | 1495 | /* FALL THROUGH */ |
79072805 | 1496 | case OP_GV: |
463ee0b2 | 1497 | case OP_AV2ARYLEN: |
3280af22 | 1498 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 1499 | case OP_SASSIGN: |
bf4b1e52 GS |
1500 | case OP_ANDASSIGN: |
1501 | case OP_ORASSIGN: | |
8990e307 | 1502 | case OP_AELEMFAST: |
3280af22 | 1503 | PL_modcount++; |
8990e307 LW |
1504 | break; |
1505 | ||
748a9306 LW |
1506 | case OP_PADAV: |
1507 | case OP_PADHV: | |
3280af22 | 1508 | PL_modcount = 10000; |
5196be3e MB |
1509 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) |
1510 | return o; /* Treat \(@foo) like ordinary list. */ | |
1511 | if (scalar_mod_type(o, type)) | |
3fe9a6f1 | 1512 | goto nomod; |
748a9306 LW |
1513 | /* FALL THROUGH */ |
1514 | case OP_PADSV: | |
3280af22 | 1515 | PL_modcount++; |
748a9306 | 1516 | if (!type) |
cea2e8a9 | 1517 | Perl_croak(aTHX_ "Can't localize lexical variable %s", |
2d8e6c8d | 1518 | SvPV(*av_fetch(PL_comppad_name, o->op_targ, 4), n_a)); |
463ee0b2 LW |
1519 | break; |
1520 | ||
554b3eca | 1521 | #ifdef USE_THREADS |
2faa37cc | 1522 | case OP_THREADSV: |
533c011a | 1523 | PL_modcount++; /* XXX ??? */ |
554b3eca MB |
1524 | break; |
1525 | #endif /* USE_THREADS */ | |
1526 | ||
748a9306 LW |
1527 | case OP_PUSHMARK: |
1528 | break; | |
a0d0e21e | 1529 | |
69969c6f SB |
1530 | case OP_KEYS: |
1531 | if (type != OP_SASSIGN) | |
1532 | goto nomod; | |
5d82c453 GA |
1533 | goto lvalue_func; |
1534 | case OP_SUBSTR: | |
1535 | if (o->op_private == 4) /* don't allow 4 arg substr as lvalue */ | |
1536 | goto nomod; | |
5f05dabc | 1537 | /* FALL THROUGH */ |
a0d0e21e | 1538 | case OP_POS: |
463ee0b2 | 1539 | case OP_VEC: |
5d82c453 | 1540 | lvalue_func: |
11343788 MB |
1541 | pad_free(o->op_targ); |
1542 | o->op_targ = pad_alloc(o->op_type, SVs_PADMY); | |
5dc0d613 | 1543 | assert(SvTYPE(PAD_SV(o->op_targ)) == SVt_NULL); |
11343788 MB |
1544 | if (o->op_flags & OPf_KIDS) |
1545 | mod(cBINOPo->op_first->op_sibling, type); | |
463ee0b2 | 1546 | break; |
a0d0e21e | 1547 | |
463ee0b2 LW |
1548 | case OP_AELEM: |
1549 | case OP_HELEM: | |
11343788 | 1550 | ref(cBINOPo->op_first, o->op_type); |
68dc0745 | 1551 | if (type == OP_ENTERSUB && |
5dc0d613 MB |
1552 | !(o->op_private & (OPpLVAL_INTRO | OPpDEREF))) |
1553 | o->op_private |= OPpLVAL_DEFER; | |
3280af22 | 1554 | PL_modcount++; |
463ee0b2 LW |
1555 | break; |
1556 | ||
1557 | case OP_SCOPE: | |
1558 | case OP_LEAVE: | |
1559 | case OP_ENTER: | |
11343788 MB |
1560 | if (o->op_flags & OPf_KIDS) |
1561 | mod(cLISTOPo->op_last, type); | |
a0d0e21e LW |
1562 | break; |
1563 | ||
1564 | case OP_NULL: | |
638bc118 GS |
1565 | if (o->op_flags & OPf_SPECIAL) /* do BLOCK */ |
1566 | goto nomod; | |
1567 | else if (!(o->op_flags & OPf_KIDS)) | |
463ee0b2 | 1568 | break; |
11343788 MB |
1569 | if (o->op_targ != OP_LIST) { |
1570 | mod(cBINOPo->op_first, type); | |
a0d0e21e LW |
1571 | break; |
1572 | } | |
1573 | /* FALL THROUGH */ | |
463ee0b2 | 1574 | case OP_LIST: |
11343788 | 1575 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1576 | mod(kid, type); |
1577 | break; | |
1578 | } | |
11343788 | 1579 | o->op_flags |= OPf_MOD; |
a0d0e21e LW |
1580 | |
1581 | if (type == OP_AASSIGN || type == OP_SASSIGN) | |
11343788 | 1582 | o->op_flags |= OPf_SPECIAL|OPf_REF; |
a0d0e21e | 1583 | else if (!type) { |
11343788 MB |
1584 | o->op_private |= OPpLVAL_INTRO; |
1585 | o->op_flags &= ~OPf_SPECIAL; | |
3280af22 | 1586 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 1587 | } |
a0d0e21e | 1588 | else if (type != OP_GREPSTART && type != OP_ENTERSUB) |
11343788 MB |
1589 | o->op_flags |= OPf_REF; |
1590 | return o; | |
463ee0b2 LW |
1591 | } |
1592 | ||
864dbfa3 | 1593 | STATIC bool |
cea2e8a9 | 1594 | S_scalar_mod_type(pTHX_ OP *o, I32 type) |
3fe9a6f1 | 1595 | { |
1596 | switch (type) { | |
1597 | case OP_SASSIGN: | |
5196be3e | 1598 | if (o->op_type == OP_RV2GV) |
3fe9a6f1 | 1599 | return FALSE; |
1600 | /* FALL THROUGH */ | |
1601 | case OP_PREINC: | |
1602 | case OP_PREDEC: | |
1603 | case OP_POSTINC: | |
1604 | case OP_POSTDEC: | |
1605 | case OP_I_PREINC: | |
1606 | case OP_I_PREDEC: | |
1607 | case OP_I_POSTINC: | |
1608 | case OP_I_POSTDEC: | |
1609 | case OP_POW: | |
1610 | case OP_MULTIPLY: | |
1611 | case OP_DIVIDE: | |
1612 | case OP_MODULO: | |
1613 | case OP_REPEAT: | |
1614 | case OP_ADD: | |
1615 | case OP_SUBTRACT: | |
1616 | case OP_I_MULTIPLY: | |
1617 | case OP_I_DIVIDE: | |
1618 | case OP_I_MODULO: | |
1619 | case OP_I_ADD: | |
1620 | case OP_I_SUBTRACT: | |
1621 | case OP_LEFT_SHIFT: | |
1622 | case OP_RIGHT_SHIFT: | |
1623 | case OP_BIT_AND: | |
1624 | case OP_BIT_XOR: | |
1625 | case OP_BIT_OR: | |
1626 | case OP_CONCAT: | |
1627 | case OP_SUBST: | |
1628 | case OP_TRANS: | |
49e9fbe6 GS |
1629 | case OP_READ: |
1630 | case OP_SYSREAD: | |
1631 | case OP_RECV: | |
bf4b1e52 GS |
1632 | case OP_ANDASSIGN: |
1633 | case OP_ORASSIGN: | |
3fe9a6f1 | 1634 | return TRUE; |
1635 | default: | |
1636 | return FALSE; | |
1637 | } | |
1638 | } | |
1639 | ||
35cd451c | 1640 | STATIC bool |
cea2e8a9 | 1641 | S_is_handle_constructor(pTHX_ OP *o, I32 argnum) |
35cd451c GS |
1642 | { |
1643 | switch (o->op_type) { | |
1644 | case OP_PIPE_OP: | |
1645 | case OP_SOCKPAIR: | |
1646 | if (argnum == 2) | |
1647 | return TRUE; | |
1648 | /* FALL THROUGH */ | |
1649 | case OP_SYSOPEN: | |
1650 | case OP_OPEN: | |
ded8aa31 | 1651 | case OP_SELECT: /* XXX c.f. SelectSaver.pm */ |
35cd451c GS |
1652 | case OP_SOCKET: |
1653 | case OP_OPEN_DIR: | |
1654 | case OP_ACCEPT: | |
1655 | if (argnum == 1) | |
1656 | return TRUE; | |
1657 | /* FALL THROUGH */ | |
1658 | default: | |
1659 | return FALSE; | |
1660 | } | |
1661 | } | |
1662 | ||
463ee0b2 | 1663 | OP * |
864dbfa3 | 1664 | Perl_refkids(pTHX_ OP *o, I32 type) |
463ee0b2 LW |
1665 | { |
1666 | OP *kid; | |
11343788 MB |
1667 | if (o && o->op_flags & OPf_KIDS) { |
1668 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
463ee0b2 LW |
1669 | ref(kid, type); |
1670 | } | |
11343788 | 1671 | return o; |
463ee0b2 LW |
1672 | } |
1673 | ||
1674 | OP * | |
864dbfa3 | 1675 | Perl_ref(pTHX_ OP *o, I32 type) |
463ee0b2 LW |
1676 | { |
1677 | OP *kid; | |
463ee0b2 | 1678 | |
3280af22 | 1679 | if (!o || PL_error_count) |
11343788 | 1680 | return o; |
463ee0b2 | 1681 | |
11343788 | 1682 | switch (o->op_type) { |
a0d0e21e | 1683 | case OP_ENTERSUB: |
e55aaa0e | 1684 | if ((type == OP_DEFINED || type == OP_LOCK) && |
11343788 MB |
1685 | !(o->op_flags & OPf_STACKED)) { |
1686 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
22c35a8c | 1687 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 MB |
1688 | assert(cUNOPo->op_first->op_type == OP_NULL); |
1689 | null(((LISTOP*)cUNOPo->op_first)->op_first); /* disable pushmark */ | |
1690 | o->op_flags |= OPf_SPECIAL; | |
8990e307 LW |
1691 | } |
1692 | break; | |
aeea060c | 1693 | |
463ee0b2 | 1694 | case OP_COND_EXPR: |
11343788 | 1695 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1696 | ref(kid, type); |
1697 | break; | |
8990e307 | 1698 | case OP_RV2SV: |
35cd451c GS |
1699 | if (type == OP_DEFINED) |
1700 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
11343788 | 1701 | ref(cUNOPo->op_first, o->op_type); |
4633a7c4 LW |
1702 | /* FALL THROUGH */ |
1703 | case OP_PADSV: | |
5f05dabc | 1704 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1705 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1706 | : type == OP_RV2HV ? OPpDEREF_HV | |
1707 | : OPpDEREF_SV); | |
11343788 | 1708 | o->op_flags |= OPf_MOD; |
a0d0e21e | 1709 | } |
8990e307 LW |
1710 | break; |
1711 | ||
2faa37cc | 1712 | case OP_THREADSV: |
a863c7d1 MB |
1713 | o->op_flags |= OPf_MOD; /* XXX ??? */ |
1714 | break; | |
1715 | ||
463ee0b2 LW |
1716 | case OP_RV2AV: |
1717 | case OP_RV2HV: | |
aeea060c | 1718 | o->op_flags |= OPf_REF; |
8990e307 | 1719 | /* FALL THROUGH */ |
463ee0b2 | 1720 | case OP_RV2GV: |
35cd451c GS |
1721 | if (type == OP_DEFINED) |
1722 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
11343788 | 1723 | ref(cUNOPo->op_first, o->op_type); |
463ee0b2 | 1724 | break; |
8990e307 | 1725 | |
463ee0b2 LW |
1726 | case OP_PADAV: |
1727 | case OP_PADHV: | |
aeea060c | 1728 | o->op_flags |= OPf_REF; |
79072805 | 1729 | break; |
aeea060c | 1730 | |
8990e307 | 1731 | case OP_SCALAR: |
79072805 | 1732 | case OP_NULL: |
11343788 | 1733 | if (!(o->op_flags & OPf_KIDS)) |
463ee0b2 | 1734 | break; |
11343788 | 1735 | ref(cBINOPo->op_first, type); |
79072805 LW |
1736 | break; |
1737 | case OP_AELEM: | |
1738 | case OP_HELEM: | |
11343788 | 1739 | ref(cBINOPo->op_first, o->op_type); |
5f05dabc | 1740 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1741 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1742 | : type == OP_RV2HV ? OPpDEREF_HV | |
1743 | : OPpDEREF_SV); | |
11343788 | 1744 | o->op_flags |= OPf_MOD; |
8990e307 | 1745 | } |
79072805 LW |
1746 | break; |
1747 | ||
463ee0b2 | 1748 | case OP_SCOPE: |
79072805 LW |
1749 | case OP_LEAVE: |
1750 | case OP_ENTER: | |
8990e307 | 1751 | case OP_LIST: |
11343788 | 1752 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1753 | break; |
11343788 | 1754 | ref(cLISTOPo->op_last, type); |
79072805 | 1755 | break; |
a0d0e21e LW |
1756 | default: |
1757 | break; | |
79072805 | 1758 | } |
11343788 | 1759 | return scalar(o); |
8990e307 | 1760 | |
79072805 LW |
1761 | } |
1762 | ||
09bef843 SB |
1763 | STATIC OP * |
1764 | S_dup_attrlist(pTHX_ OP *o) | |
1765 | { | |
1766 | OP *rop = Nullop; | |
1767 | ||
1768 | /* An attrlist is either a simple OP_CONST or an OP_LIST with kids, | |
1769 | * where the first kid is OP_PUSHMARK and the remaining ones | |
1770 | * are OP_CONST. We need to push the OP_CONST values. | |
1771 | */ | |
1772 | if (o->op_type == OP_CONST) | |
1773 | rop = newSVOP(OP_CONST, o->op_flags, SvREFCNT_inc(cSVOPo->op_sv)); | |
1774 | else { | |
1775 | assert((o->op_type == OP_LIST) && (o->op_flags & OPf_KIDS)); | |
1776 | for (o = cLISTOPo->op_first; o; o=o->op_sibling) { | |
1777 | if (o->op_type == OP_CONST) | |
1778 | rop = append_elem(OP_LIST, rop, | |
1779 | newSVOP(OP_CONST, o->op_flags, | |
1780 | SvREFCNT_inc(cSVOPo->op_sv))); | |
1781 | } | |
1782 | } | |
1783 | return rop; | |
1784 | } | |
1785 | ||
1786 | STATIC void | |
1787 | S_apply_attrs(pTHX_ HV *stash, SV *target, OP *attrs) | |
1788 | { | |
1789 | OP *modname; /* for 'use' */ | |
1790 | SV *stashsv; | |
1791 | ||
1792 | /* fake up C<use attributes $pkg,$rv,@attrs> */ | |
1793 | ENTER; /* need to protect against side-effects of 'use' */ | |
1794 | SAVEINT(PL_expect); | |
1795 | if (stash && HvNAME(stash)) | |
1796 | stashsv = newSVpv(HvNAME(stash), 0); | |
1797 | else | |
1798 | stashsv = &PL_sv_no; | |
1799 | #define ATTRSMODULE "attributes" | |
1800 | modname = newSVOP(OP_CONST, 0, | |
1801 | newSVpvn(ATTRSMODULE, sizeof(ATTRSMODULE)-1)); | |
1802 | modname->op_private |= OPpCONST_BARE; | |
1803 | /* that flag is required to make 'use' work right */ | |
1804 | utilize(1, start_subparse(FALSE, 0), | |
1805 | Nullop, /* version */ | |
1806 | modname, | |
1807 | prepend_elem(OP_LIST, | |
1808 | newSVOP(OP_CONST, 0, stashsv), | |
1809 | prepend_elem(OP_LIST, | |
1810 | newSVOP(OP_CONST, 0, newRV(target)), | |
1811 | dup_attrlist(attrs)))); | |
1812 | LEAVE; | |
1813 | } | |
1814 | ||
1815 | STATIC OP * | |
1816 | S_my_kid(pTHX_ OP *o, OP *attrs) | |
93a17b20 LW |
1817 | { |
1818 | OP *kid; | |
93a17b20 LW |
1819 | I32 type; |
1820 | ||
3280af22 | 1821 | if (!o || PL_error_count) |
11343788 | 1822 | return o; |
93a17b20 | 1823 | |
11343788 | 1824 | type = o->op_type; |
93a17b20 | 1825 | if (type == OP_LIST) { |
11343788 | 1826 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
09bef843 | 1827 | my_kid(kid, attrs); |
dab48698 | 1828 | } else if (type == OP_UNDEF) { |
7766148a | 1829 | return o; |
77ca0c92 LW |
1830 | } else if (type == OP_RV2SV || /* "our" declaration */ |
1831 | type == OP_RV2AV || | |
1832 | type == OP_RV2HV) { /* XXX does this let anything illegal in? */ | |
1833 | return o; | |
dab48698 | 1834 | } else if (type != OP_PADSV && |
93a17b20 LW |
1835 | type != OP_PADAV && |
1836 | type != OP_PADHV && | |
1837 | type != OP_PUSHMARK) | |
1838 | { | |
cea2e8a9 | 1839 | yyerror(Perl_form(aTHX_ "Can't declare %s in my", PL_op_desc[o->op_type])); |
11343788 | 1840 | return o; |
93a17b20 | 1841 | } |
09bef843 SB |
1842 | else if (attrs && type != OP_PUSHMARK) { |
1843 | HV *stash; | |
1844 | SV *padsv; | |
1845 | SV **namesvp; | |
1846 | ||
1847 | /* check for C<my Dog $spot> when deciding package */ | |
1848 | namesvp = av_fetch(PL_comppad_name, o->op_targ, FALSE); | |
1849 | if (namesvp && *namesvp && SvOBJECT(*namesvp) && HvNAME(SvSTASH(*namesvp))) | |
1850 | stash = SvSTASH(*namesvp); | |
1851 | else | |
1852 | stash = PL_curstash; | |
1853 | padsv = PAD_SV(o->op_targ); | |
1854 | apply_attrs(stash, padsv, attrs); | |
1855 | } | |
11343788 MB |
1856 | o->op_flags |= OPf_MOD; |
1857 | o->op_private |= OPpLVAL_INTRO; | |
1858 | return o; | |
93a17b20 LW |
1859 | } |
1860 | ||
1861 | OP * | |
09bef843 SB |
1862 | Perl_my_attrs(pTHX_ OP *o, OP *attrs) |
1863 | { | |
1864 | if (o->op_flags & OPf_PARENS) | |
1865 | list(o); | |
1866 | PL_in_my = FALSE; | |
1867 | PL_in_my_stash = Nullhv; | |
1868 | if (attrs) | |
1869 | SAVEFREEOP(attrs); | |
1870 | return my_kid(o, attrs); | |
1871 | } | |
1872 | ||
1873 | OP * | |
1874 | Perl_my(pTHX_ OP *o) | |
1875 | { | |
1876 | return my_kid(o, Nullop); | |
1877 | } | |
1878 | ||
1879 | OP * | |
864dbfa3 | 1880 | Perl_sawparens(pTHX_ OP *o) |
79072805 LW |
1881 | { |
1882 | if (o) | |
1883 | o->op_flags |= OPf_PARENS; | |
1884 | return o; | |
1885 | } | |
1886 | ||
1887 | OP * | |
864dbfa3 | 1888 | Perl_bind_match(pTHX_ I32 type, OP *left, OP *right) |
79072805 | 1889 | { |
d008e5eb | 1890 | dTHR; |
11343788 | 1891 | OP *o; |
79072805 | 1892 | |
599cee73 PM |
1893 | if (ckWARN(WARN_UNSAFE) && |
1894 | (left->op_type == OP_RV2AV || | |
1895 | left->op_type == OP_RV2HV || | |
1896 | left->op_type == OP_PADAV || | |
1897 | left->op_type == OP_PADHV)) { | |
22c35a8c | 1898 | char *desc = PL_op_desc[(right->op_type == OP_SUBST || |
599cee73 PM |
1899 | right->op_type == OP_TRANS) |
1900 | ? right->op_type : OP_MATCH]; | |
dff6d3cd GS |
1901 | const char *sample = ((left->op_type == OP_RV2AV || |
1902 | left->op_type == OP_PADAV) | |
1903 | ? "@array" : "%hash"); | |
cea2e8a9 | 1904 | Perl_warner(aTHX_ WARN_UNSAFE, |
599cee73 PM |
1905 | "Applying %s to %s will act on scalar(%s)", |
1906 | desc, sample, sample); | |
2ae324a7 | 1907 | } |
1908 | ||
79072805 LW |
1909 | if (right->op_type == OP_MATCH || |
1910 | right->op_type == OP_SUBST || | |
1911 | right->op_type == OP_TRANS) { | |
1912 | right->op_flags |= OPf_STACKED; | |
1913 | if (right->op_type != OP_MATCH) | |
463ee0b2 | 1914 | left = mod(left, right->op_type); |
79072805 | 1915 | if (right->op_type == OP_TRANS) |
11343788 | 1916 | o = newBINOP(OP_NULL, OPf_STACKED, scalar(left), right); |
79072805 | 1917 | else |
11343788 | 1918 | o = prepend_elem(right->op_type, scalar(left), right); |
79072805 | 1919 | if (type == OP_NOT) |
11343788 MB |
1920 | return newUNOP(OP_NOT, 0, scalar(o)); |
1921 | return o; | |
79072805 LW |
1922 | } |
1923 | else | |
1924 | return bind_match(type, left, | |
1925 | pmruntime(newPMOP(OP_MATCH, 0), right, Nullop)); | |
1926 | } | |
1927 | ||
1928 | OP * | |
864dbfa3 | 1929 | Perl_invert(pTHX_ OP *o) |
79072805 | 1930 | { |
11343788 MB |
1931 | if (!o) |
1932 | return o; | |
79072805 | 1933 | /* XXX need to optimize away NOT NOT here? Or do we let optimizer do it? */ |
11343788 | 1934 | return newUNOP(OP_NOT, OPf_SPECIAL, scalar(o)); |
79072805 LW |
1935 | } |
1936 | ||
1937 | OP * | |
864dbfa3 | 1938 | Perl_scope(pTHX_ OP *o) |
79072805 LW |
1939 | { |
1940 | if (o) { | |
3280af22 | 1941 | if (o->op_flags & OPf_PARENS || PERLDB_NOOPT || PL_tainting) { |
463ee0b2 LW |
1942 | o = prepend_elem(OP_LINESEQ, newOP(OP_ENTER, 0), o); |
1943 | o->op_type = OP_LEAVE; | |
22c35a8c | 1944 | o->op_ppaddr = PL_ppaddr[OP_LEAVE]; |
463ee0b2 LW |
1945 | } |
1946 | else { | |
1947 | if (o->op_type == OP_LINESEQ) { | |
1948 | OP *kid; | |
1949 | o->op_type = OP_SCOPE; | |
22c35a8c | 1950 | o->op_ppaddr = PL_ppaddr[OP_SCOPE]; |
c3ed7a6a GS |
1951 | kid = ((LISTOP*)o)->op_first; |
1952 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) | |
1953 | null(kid); | |
463ee0b2 LW |
1954 | } |
1955 | else | |
748a9306 | 1956 | o = newLISTOP(OP_SCOPE, 0, o, Nullop); |
463ee0b2 | 1957 | } |
79072805 LW |
1958 | } |
1959 | return o; | |
1960 | } | |
1961 | ||
b3ac6de7 | 1962 | void |
864dbfa3 | 1963 | Perl_save_hints(pTHX) |
b3ac6de7 | 1964 | { |
3280af22 NIS |
1965 | SAVEI32(PL_hints); |
1966 | SAVESPTR(GvHV(PL_hintgv)); | |
1967 | GvHV(PL_hintgv) = newHVhv(GvHV(PL_hintgv)); | |
1968 | SAVEFREESV(GvHV(PL_hintgv)); | |
b3ac6de7 IZ |
1969 | } |
1970 | ||
a0d0e21e | 1971 | int |
864dbfa3 | 1972 | Perl_block_start(pTHX_ int full) |
79072805 | 1973 | { |
11343788 | 1974 | dTHR; |
3280af22 | 1975 | int retval = PL_savestack_ix; |
b3ac6de7 | 1976 | |
3280af22 | 1977 | SAVEI32(PL_comppad_name_floor); |
55497cff | 1978 | if (full) { |
3280af22 NIS |
1979 | if ((PL_comppad_name_fill = AvFILLp(PL_comppad_name)) > 0) |
1980 | PL_comppad_name_floor = PL_comppad_name_fill; | |
55497cff | 1981 | else |
3280af22 NIS |
1982 | PL_comppad_name_floor = 0; |
1983 | } | |
1984 | SAVEI32(PL_min_intro_pending); | |
1985 | SAVEI32(PL_max_intro_pending); | |
1986 | PL_min_intro_pending = 0; | |
1987 | SAVEI32(PL_comppad_name_fill); | |
1988 | SAVEI32(PL_padix_floor); | |
1989 | PL_padix_floor = PL_padix; | |
1990 | PL_pad_reset_pending = FALSE; | |
b3ac6de7 | 1991 | SAVEHINTS(); |
3280af22 | 1992 | PL_hints &= ~HINT_BLOCK_SCOPE; |
7766f137 | 1993 | SAVESPTR(PL_compiling.cop_warnings); |
0453d815 | 1994 | if (! specialWARN(PL_compiling.cop_warnings)) { |
599cee73 PM |
1995 | PL_compiling.cop_warnings = newSVsv(PL_compiling.cop_warnings) ; |
1996 | SAVEFREESV(PL_compiling.cop_warnings) ; | |
1997 | } | |
1998 | ||
1999 | ||
a0d0e21e LW |
2000 | return retval; |
2001 | } | |
2002 | ||
2003 | OP* | |
864dbfa3 | 2004 | Perl_block_end(pTHX_ I32 floor, OP *seq) |
a0d0e21e | 2005 | { |
11343788 | 2006 | dTHR; |
3280af22 | 2007 | int needblockscope = PL_hints & HINT_BLOCK_SCOPE; |
a0d0e21e | 2008 | OP* retval = scalarseq(seq); |
a0d0e21e | 2009 | LEAVE_SCOPE(floor); |
3280af22 | 2010 | PL_pad_reset_pending = FALSE; |
e24b16f9 | 2011 | PL_compiling.op_private = PL_hints; |
a0d0e21e | 2012 | if (needblockscope) |
3280af22 NIS |
2013 | PL_hints |= HINT_BLOCK_SCOPE; /* propagate out */ |
2014 | pad_leavemy(PL_comppad_name_fill); | |
2015 | PL_cop_seqmax++; | |
a0d0e21e LW |
2016 | return retval; |
2017 | } | |
2018 | ||
76e3520e | 2019 | STATIC OP * |
cea2e8a9 | 2020 | S_newDEFSVOP(pTHX) |
54b9620d MB |
2021 | { |
2022 | #ifdef USE_THREADS | |
2023 | OP *o = newOP(OP_THREADSV, 0); | |
2024 | o->op_targ = find_threadsv("_"); | |
2025 | return o; | |
2026 | #else | |
3280af22 | 2027 | return newSVREF(newGVOP(OP_GV, 0, PL_defgv)); |
54b9620d MB |
2028 | #endif /* USE_THREADS */ |
2029 | } | |
2030 | ||
a0d0e21e | 2031 | void |
864dbfa3 | 2032 | Perl_newPROG(pTHX_ OP *o) |
a0d0e21e | 2033 | { |
11343788 | 2034 | dTHR; |
3280af22 | 2035 | if (PL_in_eval) { |
b295d113 TH |
2036 | if (PL_eval_root) |
2037 | return; | |
faef0170 HS |
2038 | PL_eval_root = newUNOP(OP_LEAVEEVAL, |
2039 | ((PL_in_eval & EVAL_KEEPERR) | |
2040 | ? OPf_SPECIAL : 0), o); | |
3280af22 | 2041 | PL_eval_start = linklist(PL_eval_root); |
7934575e GS |
2042 | PL_eval_root->op_private |= OPpREFCOUNTED; |
2043 | OpREFCNT_set(PL_eval_root, 1); | |
3280af22 NIS |
2044 | PL_eval_root->op_next = 0; |
2045 | peep(PL_eval_start); | |
a0d0e21e LW |
2046 | } |
2047 | else { | |
5dc0d613 | 2048 | if (!o) |
a0d0e21e | 2049 | return; |
3280af22 NIS |
2050 | PL_main_root = scope(sawparens(scalarvoid(o))); |
2051 | PL_curcop = &PL_compiling; | |
2052 | PL_main_start = LINKLIST(PL_main_root); | |
7934575e GS |
2053 | PL_main_root->op_private |= OPpREFCOUNTED; |
2054 | OpREFCNT_set(PL_main_root, 1); | |
3280af22 NIS |
2055 | PL_main_root->op_next = 0; |
2056 | peep(PL_main_start); | |
2057 | PL_compcv = 0; | |
3841441e | 2058 | |
4fdae800 | 2059 | /* Register with debugger */ |
84902520 | 2060 | if (PERLDB_INTER) { |
864dbfa3 | 2061 | CV *cv = get_cv("DB::postponed", FALSE); |
3841441e CS |
2062 | if (cv) { |
2063 | dSP; | |
924508f0 | 2064 | PUSHMARK(SP); |
cc49e20b | 2065 | XPUSHs((SV*)CopFILEGV(&PL_compiling)); |
3841441e | 2066 | PUTBACK; |
864dbfa3 | 2067 | call_sv((SV*)cv, G_DISCARD); |
3841441e CS |
2068 | } |
2069 | } | |
79072805 | 2070 | } |
79072805 LW |
2071 | } |
2072 | ||
2073 | OP * | |
864dbfa3 | 2074 | Perl_localize(pTHX_ OP *o, I32 lex) |
79072805 LW |
2075 | { |
2076 | if (o->op_flags & OPf_PARENS) | |
2077 | list(o); | |
8990e307 | 2078 | else { |
d008e5eb | 2079 | dTHR; |
599cee73 | 2080 | if (ckWARN(WARN_PARENTHESIS) && PL_bufptr > PL_oldbufptr && PL_bufptr[-1] == ',') { |
8990e307 | 2081 | char *s; |
834a4ddd | 2082 | for (s = PL_bufptr; *s && (isALNUM(*s) || (*s & 0x80) || strchr("@$%, ",*s)); s++) ; |
a0d0e21e | 2083 | if (*s == ';' || *s == '=') |
cea2e8a9 | 2084 | Perl_warner(aTHX_ WARN_PARENTHESIS, "Parentheses missing around \"%s\" list", |
599cee73 | 2085 | lex ? "my" : "local"); |
8990e307 LW |
2086 | } |
2087 | } | |
3280af22 NIS |
2088 | PL_in_my = FALSE; |
2089 | PL_in_my_stash = Nullhv; | |
93a17b20 LW |
2090 | if (lex) |
2091 | return my(o); | |
2092 | else | |
463ee0b2 | 2093 | return mod(o, OP_NULL); /* a bit kludgey */ |
79072805 LW |
2094 | } |
2095 | ||
2096 | OP * | |
864dbfa3 | 2097 | Perl_jmaybe(pTHX_ OP *o) |
79072805 LW |
2098 | { |
2099 | if (o->op_type == OP_LIST) { | |
554b3eca MB |
2100 | OP *o2; |
2101 | #ifdef USE_THREADS | |
2faa37cc | 2102 | o2 = newOP(OP_THREADSV, 0); |
54b9620d | 2103 | o2->op_targ = find_threadsv(";"); |
554b3eca MB |
2104 | #else |
2105 | o2 = newSVREF(newGVOP(OP_GV, 0, gv_fetchpv(";", TRUE, SVt_PV))), | |
2106 | #endif /* USE_THREADS */ | |
2107 | o = convert(OP_JOIN, 0, prepend_elem(OP_LIST, o2, o)); | |
79072805 LW |
2108 | } |
2109 | return o; | |
2110 | } | |
2111 | ||
2112 | OP * | |
864dbfa3 | 2113 | Perl_fold_constants(pTHX_ register OP *o) |
79072805 | 2114 | { |
11343788 | 2115 | dTHR; |
79072805 LW |
2116 | register OP *curop; |
2117 | I32 type = o->op_type; | |
748a9306 | 2118 | SV *sv; |
79072805 | 2119 | |
22c35a8c | 2120 | if (PL_opargs[type] & OA_RETSCALAR) |
79072805 | 2121 | scalar(o); |
b162f9ea | 2122 | if (PL_opargs[type] & OA_TARGET && !o->op_targ) |
ed6116ce | 2123 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 | 2124 | |
eac055e9 GS |
2125 | /* integerize op, unless it happens to be C<-foo>. |
2126 | * XXX should pp_i_negate() do magic string negation instead? */ | |
2127 | if ((PL_opargs[type] & OA_OTHERINT) && (PL_hints & HINT_INTEGER) | |
2128 | && !(type == OP_NEGATE && cUNOPo->op_first->op_type == OP_CONST | |
2129 | && (cUNOPo->op_first->op_private & OPpCONST_BARE))) | |
2130 | { | |
22c35a8c | 2131 | o->op_ppaddr = PL_ppaddr[type = ++(o->op_type)]; |
eac055e9 | 2132 | } |
85e6fe83 | 2133 | |
22c35a8c | 2134 | if (!(PL_opargs[type] & OA_FOLDCONST)) |
79072805 LW |
2135 | goto nope; |
2136 | ||
de939608 | 2137 | switch (type) { |
7a52d87a GS |
2138 | case OP_NEGATE: |
2139 | /* XXX might want a ck_negate() for this */ | |
2140 | cUNOPo->op_first->op_private &= ~OPpCONST_STRICT; | |
2141 | break; | |
de939608 CS |
2142 | case OP_SPRINTF: |
2143 | case OP_UCFIRST: | |
2144 | case OP_LCFIRST: | |
2145 | case OP_UC: | |
2146 | case OP_LC: | |
69dcf70c MB |
2147 | case OP_SLT: |
2148 | case OP_SGT: | |
2149 | case OP_SLE: | |
2150 | case OP_SGE: | |
2151 | case OP_SCMP: | |
2152 | ||
de939608 CS |
2153 | if (o->op_private & OPpLOCALE) |
2154 | goto nope; | |
2155 | } | |
2156 | ||
3280af22 | 2157 | if (PL_error_count) |
a0d0e21e LW |
2158 | goto nope; /* Don't try to run w/ errors */ |
2159 | ||
79072805 | 2160 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
11fa937b GS |
2161 | if ((curop->op_type != OP_CONST || |
2162 | (curop->op_private & OPpCONST_BARE)) && | |
7a52d87a GS |
2163 | curop->op_type != OP_LIST && |
2164 | curop->op_type != OP_SCALAR && | |
2165 | curop->op_type != OP_NULL && | |
2166 | curop->op_type != OP_PUSHMARK) | |
2167 | { | |
79072805 LW |
2168 | goto nope; |
2169 | } | |
2170 | } | |
2171 | ||
2172 | curop = LINKLIST(o); | |
2173 | o->op_next = 0; | |
533c011a | 2174 | PL_op = curop; |
cea2e8a9 | 2175 | CALLRUNOPS(aTHX); |
3280af22 | 2176 | sv = *(PL_stack_sp--); |
748a9306 | 2177 | if (o->op_targ && sv == PAD_SV(o->op_targ)) /* grab pad temp? */ |
79072805 | 2178 | pad_swipe(o->op_targ); |
748a9306 LW |
2179 | else if (SvTEMP(sv)) { /* grab mortal temp? */ |
2180 | (void)SvREFCNT_inc(sv); | |
2181 | SvTEMP_off(sv); | |
85e6fe83 | 2182 | } |
79072805 LW |
2183 | op_free(o); |
2184 | if (type == OP_RV2GV) | |
b1cb66bf | 2185 | return newGVOP(OP_GV, 0, (GV*)sv); |
748a9306 | 2186 | else { |
ee580363 GS |
2187 | /* try to smush double to int, but don't smush -2.0 to -2 */ |
2188 | if ((SvFLAGS(sv) & (SVf_IOK|SVf_NOK|SVf_POK)) == SVf_NOK && | |
2189 | type != OP_NEGATE) | |
2190 | { | |
748a9306 | 2191 | IV iv = SvIV(sv); |
65202027 | 2192 | if ((NV)iv == SvNV(sv)) { |
748a9306 LW |
2193 | SvREFCNT_dec(sv); |
2194 | sv = newSViv(iv); | |
2195 | } | |
b1cb66bf | 2196 | else |
2197 | SvIOK_off(sv); /* undo SvIV() damage */ | |
748a9306 LW |
2198 | } |
2199 | return newSVOP(OP_CONST, 0, sv); | |
2200 | } | |
aeea060c | 2201 | |
79072805 | 2202 | nope: |
22c35a8c | 2203 | if (!(PL_opargs[type] & OA_OTHERINT)) |
79072805 | 2204 | return o; |
79072805 | 2205 | |
3280af22 | 2206 | if (!(PL_hints & HINT_INTEGER)) { |
4bb9f687 GS |
2207 | if (type == OP_MODULO |
2208 | || type == OP_DIVIDE | |
2209 | || !(o->op_flags & OPf_KIDS)) | |
2210 | { | |
85e6fe83 | 2211 | return o; |
4bb9f687 | 2212 | } |
85e6fe83 LW |
2213 | |
2214 | for (curop = ((UNOP*)o)->op_first; curop; curop = curop->op_sibling) { | |
2215 | if (curop->op_type == OP_CONST) { | |
b1cb66bf | 2216 | if (SvIOK(((SVOP*)curop)->op_sv)) |
85e6fe83 LW |
2217 | continue; |
2218 | return o; | |
2219 | } | |
22c35a8c | 2220 | if (PL_opargs[curop->op_type] & OA_RETINTEGER) |
79072805 LW |
2221 | continue; |
2222 | return o; | |
2223 | } | |
22c35a8c | 2224 | o->op_ppaddr = PL_ppaddr[++(o->op_type)]; |
79072805 LW |
2225 | } |
2226 | ||
79072805 LW |
2227 | return o; |
2228 | } | |
2229 | ||
2230 | OP * | |
864dbfa3 | 2231 | Perl_gen_constant_list(pTHX_ register OP *o) |
79072805 | 2232 | { |
11343788 | 2233 | dTHR; |
79072805 | 2234 | register OP *curop; |
3280af22 | 2235 | I32 oldtmps_floor = PL_tmps_floor; |
79072805 | 2236 | |
a0d0e21e | 2237 | list(o); |
3280af22 | 2238 | if (PL_error_count) |
a0d0e21e LW |
2239 | return o; /* Don't attempt to run with errors */ |
2240 | ||
533c011a | 2241 | PL_op = curop = LINKLIST(o); |
a0d0e21e | 2242 | o->op_next = 0; |
7d4045d4 | 2243 | peep(curop); |
cea2e8a9 GS |
2244 | pp_pushmark(); |
2245 | CALLRUNOPS(aTHX); | |
533c011a | 2246 | PL_op = curop; |
cea2e8a9 | 2247 | pp_anonlist(); |
3280af22 | 2248 | PL_tmps_floor = oldtmps_floor; |
79072805 LW |
2249 | |
2250 | o->op_type = OP_RV2AV; | |
22c35a8c | 2251 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
79072805 | 2252 | curop = ((UNOP*)o)->op_first; |
3280af22 | 2253 | ((UNOP*)o)->op_first = newSVOP(OP_CONST, 0, SvREFCNT_inc(*PL_stack_sp--)); |
79072805 | 2254 | op_free(curop); |
79072805 LW |
2255 | linklist(o); |
2256 | return list(o); | |
2257 | } | |
2258 | ||
2259 | OP * | |
864dbfa3 | 2260 | Perl_convert(pTHX_ I32 type, I32 flags, OP *o) |
79072805 LW |
2261 | { |
2262 | OP *kid; | |
a0d0e21e | 2263 | OP *last = 0; |
79072805 | 2264 | |
11343788 MB |
2265 | if (!o || o->op_type != OP_LIST) |
2266 | o = newLISTOP(OP_LIST, 0, o, Nullop); | |
748a9306 | 2267 | else |
5dc0d613 | 2268 | o->op_flags &= ~OPf_WANT; |
79072805 | 2269 | |
22c35a8c | 2270 | if (!(PL_opargs[type] & OA_MARK)) |
11343788 | 2271 | null(cLISTOPo->op_first); |
8990e307 | 2272 | |
11343788 | 2273 | o->op_type = type; |
22c35a8c | 2274 | o->op_ppaddr = PL_ppaddr[type]; |
11343788 | 2275 | o->op_flags |= flags; |
79072805 | 2276 | |
11343788 MB |
2277 | o = CHECKOP(type, o); |
2278 | if (o->op_type != type) | |
2279 | return o; | |
79072805 | 2280 | |
11343788 | 2281 | if (cLISTOPo->op_children < 7) { |
79072805 | 2282 | /* XXX do we really need to do this if we're done appending?? */ |
11343788 | 2283 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 | 2284 | last = kid; |
11343788 | 2285 | cLISTOPo->op_last = last; /* in case check substituted last arg */ |
79072805 LW |
2286 | } |
2287 | ||
11343788 | 2288 | return fold_constants(o); |
79072805 LW |
2289 | } |
2290 | ||
2291 | /* List constructors */ | |
2292 | ||
2293 | OP * | |
864dbfa3 | 2294 | Perl_append_elem(pTHX_ I32 type, OP *first, OP *last) |
79072805 LW |
2295 | { |
2296 | if (!first) | |
2297 | return last; | |
8990e307 LW |
2298 | |
2299 | if (!last) | |
79072805 | 2300 | return first; |
8990e307 | 2301 | |
a0d0e21e LW |
2302 | if (first->op_type != type || type==OP_LIST && first->op_flags & OPf_PARENS) |
2303 | return newLISTOP(type, 0, first, last); | |
79072805 | 2304 | |
a0d0e21e LW |
2305 | if (first->op_flags & OPf_KIDS) |
2306 | ((LISTOP*)first)->op_last->op_sibling = last; | |
2307 | else { | |
2308 | first->op_flags |= OPf_KIDS; | |
2309 | ((LISTOP*)first)->op_first = last; | |
2310 | } | |
2311 | ((LISTOP*)first)->op_last = last; | |
2312 | ((LISTOP*)first)->op_children++; | |
2313 | return first; | |
79072805 LW |
2314 | } |
2315 | ||
2316 | OP * | |
864dbfa3 | 2317 | Perl_append_list(pTHX_ I32 type, LISTOP *first, LISTOP *last) |
79072805 LW |
2318 | { |
2319 | if (!first) | |
2320 | return (OP*)last; | |
8990e307 LW |
2321 | |
2322 | if (!last) | |
79072805 | 2323 | return (OP*)first; |
8990e307 LW |
2324 | |
2325 | if (first->op_type != type) | |
79072805 | 2326 | return prepend_elem(type, (OP*)first, (OP*)last); |
8990e307 LW |
2327 | |
2328 | if (last->op_type != type) | |
79072805 LW |
2329 | return append_elem(type, (OP*)first, (OP*)last); |
2330 | ||
2331 | first->op_last->op_sibling = last->op_first; | |
2332 | first->op_last = last->op_last; | |
2333 | first->op_children += last->op_children; | |
2334 | if (first->op_children) | |
acb74605 | 2335 | first->op_flags |= OPf_KIDS; |
b7dc083c NIS |
2336 | |
2337 | #ifdef PL_OP_SLAB_ALLOC | |
2338 | #else | |
2339 | Safefree(last); | |
2340 | #endif | |
79072805 LW |
2341 | return (OP*)first; |
2342 | } | |
2343 | ||
2344 | OP * | |
864dbfa3 | 2345 | Perl_prepend_elem(pTHX_ I32 type, OP *first, OP *last) |
79072805 LW |
2346 | { |
2347 | if (!first) | |
2348 | return last; | |
8990e307 LW |
2349 | |
2350 | if (!last) | |
79072805 | 2351 | return first; |
8990e307 LW |
2352 | |
2353 | if (last->op_type == type) { | |
2354 | if (type == OP_LIST) { /* already a PUSHMARK there */ | |
2355 | first->op_sibling = ((LISTOP*)last)->op_first->op_sibling; | |
2356 | ((LISTOP*)last)->op_first->op_sibling = first; | |
2357 | } | |
2358 | else { | |
2359 | if (!(last->op_flags & OPf_KIDS)) { | |
2360 | ((LISTOP*)last)->op_last = first; | |
2361 | last->op_flags |= OPf_KIDS; | |
2362 | } | |
2363 | first->op_sibling = ((LISTOP*)last)->op_first; | |
2364 | ((LISTOP*)last)->op_first = first; | |
79072805 | 2365 | } |
79072805 LW |
2366 | ((LISTOP*)last)->op_children++; |
2367 | return last; | |
2368 | } | |
2369 | ||
2370 | return newLISTOP(type, 0, first, last); | |
2371 | } | |
2372 | ||
2373 | /* Constructors */ | |
2374 | ||
2375 | OP * | |
864dbfa3 | 2376 | Perl_newNULLLIST(pTHX) |
79072805 | 2377 | { |
8990e307 LW |
2378 | return newOP(OP_STUB, 0); |
2379 | } | |
2380 | ||
2381 | OP * | |
864dbfa3 | 2382 | Perl_force_list(pTHX_ OP *o) |
8990e307 | 2383 | { |
11343788 MB |
2384 | if (!o || o->op_type != OP_LIST) |
2385 | o = newLISTOP(OP_LIST, 0, o, Nullop); | |
2386 | null(o); | |
2387 | return o; | |
79072805 LW |
2388 | } |
2389 | ||
2390 | OP * | |
864dbfa3 | 2391 | Perl_newLISTOP(pTHX_ I32 type, I32 flags, OP *first, OP *last) |
79072805 LW |
2392 | { |
2393 | LISTOP *listop; | |
2394 | ||
b7dc083c | 2395 | NewOp(1101, listop, 1, LISTOP); |
79072805 LW |
2396 | |
2397 | listop->op_type = type; | |
22c35a8c | 2398 | listop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2399 | listop->op_children = (first != 0) + (last != 0); |
2400 | listop->op_flags = flags; | |
79072805 LW |
2401 | |
2402 | if (!last && first) | |
2403 | last = first; | |
2404 | else if (!first && last) | |
2405 | first = last; | |
8990e307 LW |
2406 | else if (first) |
2407 | first->op_sibling = last; | |
79072805 LW |
2408 | listop->op_first = first; |
2409 | listop->op_last = last; | |
8990e307 LW |
2410 | if (type == OP_LIST) { |
2411 | OP* pushop; | |
2412 | pushop = newOP(OP_PUSHMARK, 0); | |
2413 | pushop->op_sibling = first; | |
2414 | listop->op_first = pushop; | |
2415 | listop->op_flags |= OPf_KIDS; | |
2416 | if (!last) | |
2417 | listop->op_last = pushop; | |
2418 | } | |
2419 | else if (listop->op_children) | |
2420 | listop->op_flags |= OPf_KIDS; | |
79072805 LW |
2421 | |
2422 | return (OP*)listop; | |
2423 | } | |
2424 | ||
2425 | OP * | |
864dbfa3 | 2426 | Perl_newOP(pTHX_ I32 type, I32 flags) |
79072805 | 2427 | { |
11343788 | 2428 | OP *o; |
b7dc083c | 2429 | NewOp(1101, o, 1, OP); |
11343788 | 2430 | o->op_type = type; |
22c35a8c | 2431 | o->op_ppaddr = PL_ppaddr[type]; |
11343788 | 2432 | o->op_flags = flags; |
79072805 | 2433 | |
11343788 MB |
2434 | o->op_next = o; |
2435 | o->op_private = 0 + (flags >> 8); | |
22c35a8c | 2436 | if (PL_opargs[type] & OA_RETSCALAR) |
11343788 | 2437 | scalar(o); |
22c35a8c | 2438 | if (PL_opargs[type] & OA_TARGET) |
11343788 MB |
2439 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
2440 | return CHECKOP(type, o); | |
79072805 LW |
2441 | } |
2442 | ||
2443 | OP * | |
864dbfa3 | 2444 | Perl_newUNOP(pTHX_ I32 type, I32 flags, OP *first) |
79072805 LW |
2445 | { |
2446 | UNOP *unop; | |
2447 | ||
93a17b20 | 2448 | if (!first) |
aeea060c | 2449 | first = newOP(OP_STUB, 0); |
22c35a8c | 2450 | if (PL_opargs[type] & OA_MARK) |
8990e307 | 2451 | first = force_list(first); |
93a17b20 | 2452 | |
b7dc083c | 2453 | NewOp(1101, unop, 1, UNOP); |
79072805 | 2454 | unop->op_type = type; |
22c35a8c | 2455 | unop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2456 | unop->op_first = first; |
2457 | unop->op_flags = flags | OPf_KIDS; | |
c07a80fd | 2458 | unop->op_private = 1 | (flags >> 8); |
e50aee73 | 2459 | unop = (UNOP*) CHECKOP(type, unop); |
79072805 LW |
2460 | if (unop->op_next) |
2461 | return (OP*)unop; | |
2462 | ||
a0d0e21e | 2463 | return fold_constants((OP *) unop); |
79072805 LW |
2464 | } |
2465 | ||
2466 | OP * | |
864dbfa3 | 2467 | Perl_newBINOP(pTHX_ I32 type, I32 flags, OP *first, OP *last) |
79072805 LW |
2468 | { |
2469 | BINOP *binop; | |
b7dc083c | 2470 | NewOp(1101, binop, 1, BINOP); |
79072805 LW |
2471 | |
2472 | if (!first) | |
2473 | first = newOP(OP_NULL, 0); | |
2474 | ||
2475 | binop->op_type = type; | |
22c35a8c | 2476 | binop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2477 | binop->op_first = first; |
2478 | binop->op_flags = flags | OPf_KIDS; | |
2479 | if (!last) { | |
2480 | last = first; | |
c07a80fd | 2481 | binop->op_private = 1 | (flags >> 8); |
79072805 LW |
2482 | } |
2483 | else { | |
c07a80fd | 2484 | binop->op_private = 2 | (flags >> 8); |
79072805 LW |
2485 | first->op_sibling = last; |
2486 | } | |
2487 | ||
e50aee73 | 2488 | binop = (BINOP*)CHECKOP(type, binop); |
b162f9ea | 2489 | if (binop->op_next || binop->op_type != type) |
79072805 LW |
2490 | return (OP*)binop; |
2491 | ||
7284ab6f | 2492 | binop->op_last = binop->op_first->op_sibling; |
79072805 | 2493 | |
a0d0e21e | 2494 | return fold_constants((OP *)binop); |
79072805 LW |
2495 | } |
2496 | ||
a0ed51b3 LW |
2497 | static int |
2498 | utf8compare(const void *a, const void *b) | |
2499 | { | |
2500 | int i; | |
2501 | for (i = 0; i < 10; i++) { | |
2502 | if ((*(U8**)a)[i] < (*(U8**)b)[i]) | |
2503 | return -1; | |
2504 | if ((*(U8**)a)[i] > (*(U8**)b)[i]) | |
2505 | return 1; | |
2506 | } | |
2507 | return 0; | |
2508 | } | |
2509 | ||
79072805 | 2510 | OP * |
864dbfa3 | 2511 | Perl_pmtrans(pTHX_ OP *o, OP *expr, OP *repl) |
79072805 | 2512 | { |
79072805 LW |
2513 | SV *tstr = ((SVOP*)expr)->op_sv; |
2514 | SV *rstr = ((SVOP*)repl)->op_sv; | |
463ee0b2 LW |
2515 | STRLEN tlen; |
2516 | STRLEN rlen; | |
ec49126f | 2517 | register U8 *t = (U8*)SvPV(tstr, tlen); |
2518 | register U8 *r = (U8*)SvPV(rstr, rlen); | |
79072805 LW |
2519 | register I32 i; |
2520 | register I32 j; | |
a0ed51b3 | 2521 | I32 del; |
79072805 | 2522 | I32 complement; |
5d06d08e | 2523 | I32 squash; |
79072805 LW |
2524 | register short *tbl; |
2525 | ||
11343788 | 2526 | complement = o->op_private & OPpTRANS_COMPLEMENT; |
a0ed51b3 | 2527 | del = o->op_private & OPpTRANS_DELETE; |
5d06d08e | 2528 | squash = o->op_private & OPpTRANS_SQUASH; |
79072805 | 2529 | |
a0ed51b3 | 2530 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { |
79cb57f6 | 2531 | SV* listsv = newSVpvn("# comment\n",10); |
a0ed51b3 LW |
2532 | SV* transv = 0; |
2533 | U8* tend = t + tlen; | |
2534 | U8* rend = r + rlen; | |
2535 | I32 ulen; | |
2536 | U32 tfirst = 1; | |
2537 | U32 tlast = 0; | |
2538 | I32 tdiff; | |
2539 | U32 rfirst = 1; | |
2540 | U32 rlast = 0; | |
2541 | I32 rdiff; | |
2542 | I32 diff; | |
2543 | I32 none = 0; | |
2544 | U32 max = 0; | |
2545 | I32 bits; | |
2546 | I32 grows = 0; | |
2547 | I32 havefinal = 0; | |
2548 | U32 final; | |
2549 | HV *hv; | |
2550 | I32 from_utf = o->op_private & OPpTRANS_FROM_UTF; | |
2551 | I32 to_utf = o->op_private & OPpTRANS_TO_UTF; | |
2552 | ||
2553 | if (complement) { | |
2554 | U8 tmpbuf[10]; | |
2555 | U8** cp; | |
2556 | UV nextmin = 0; | |
2557 | New(1109, cp, tlen, U8*); | |
2558 | i = 0; | |
79cb57f6 | 2559 | transv = newSVpvn("",0); |
a0ed51b3 LW |
2560 | while (t < tend) { |
2561 | cp[i++] = t; | |
2562 | t += UTF8SKIP(t); | |
2563 | if (*t == 0xff) { | |
2564 | t++; | |
2565 | t += UTF8SKIP(t); | |
2566 | } | |
2567 | } | |
2568 | qsort(cp, i, sizeof(U8*), utf8compare); | |
2569 | for (j = 0; j < i; j++) { | |
2570 | U8 *s = cp[j]; | |
2571 | UV val = utf8_to_uv(s, &ulen); | |
2572 | s += ulen; | |
2573 | diff = val - nextmin; | |
2574 | if (diff > 0) { | |
2575 | t = uv_to_utf8(tmpbuf,nextmin); | |
dfe13c55 | 2576 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 LW |
2577 | if (diff > 1) { |
2578 | t = uv_to_utf8(tmpbuf, val - 1); | |
2579 | sv_catpvn(transv, "\377", 1); | |
dfe13c55 | 2580 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 LW |
2581 | } |
2582 | } | |
2583 | if (*s == 0xff) | |
2584 | val = utf8_to_uv(s+1, &ulen); | |
2585 | if (val >= nextmin) | |
2586 | nextmin = val + 1; | |
2587 | } | |
2588 | t = uv_to_utf8(tmpbuf,nextmin); | |
dfe13c55 | 2589 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 LW |
2590 | t = uv_to_utf8(tmpbuf, 0x7fffffff); |
2591 | sv_catpvn(transv, "\377", 1); | |
dfe13c55 GS |
2592 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
2593 | t = (U8*)SvPVX(transv); | |
a0ed51b3 LW |
2594 | tlen = SvCUR(transv); |
2595 | tend = t + tlen; | |
2596 | } | |
2597 | else if (!rlen && !del) { | |
2598 | r = t; rlen = tlen; rend = tend; | |
4757a243 LW |
2599 | } |
2600 | if (!squash) { | |
2601 | if (to_utf && from_utf) { /* only counting characters */ | |
2602 | if (t == r || (tlen == rlen && memEQ(t, r, tlen))) | |
2603 | o->op_private |= OPpTRANS_IDENTICAL; | |
2604 | } | |
2605 | else { /* straight latin-1 translation */ | |
2606 | if (tlen == 4 && memEQ(t, "\0\377\303\277", 4) && | |
2607 | rlen == 4 && memEQ(r, "\0\377\303\277", 4)) | |
2608 | o->op_private |= OPpTRANS_IDENTICAL; | |
2609 | } | |
a0ed51b3 LW |
2610 | } |
2611 | ||
2612 | while (t < tend || tfirst <= tlast) { | |
2613 | /* see if we need more "t" chars */ | |
2614 | if (tfirst > tlast) { | |
2615 | tfirst = (I32)utf8_to_uv(t, &ulen); | |
2616 | t += ulen; | |
2617 | if (t < tend && *t == 0xff) { /* illegal utf8 val indicates range */ | |
2618 | tlast = (I32)utf8_to_uv(++t, &ulen); | |
2619 | t += ulen; | |
2620 | } | |
2621 | else | |
2622 | tlast = tfirst; | |
2623 | } | |
2624 | ||
2625 | /* now see if we need more "r" chars */ | |
2626 | if (rfirst > rlast) { | |
2627 | if (r < rend) { | |
2628 | rfirst = (I32)utf8_to_uv(r, &ulen); | |
2629 | r += ulen; | |
2630 | if (r < rend && *r == 0xff) { /* illegal utf8 val indicates range */ | |
2631 | rlast = (I32)utf8_to_uv(++r, &ulen); | |
2632 | r += ulen; | |
2633 | } | |
2634 | else | |
2635 | rlast = rfirst; | |
2636 | } | |
2637 | else { | |
2638 | if (!havefinal++) | |
2639 | final = rlast; | |
2640 | rfirst = rlast = 0xffffffff; | |
2641 | } | |
2642 | } | |
2643 | ||
2644 | /* now see which range will peter our first, if either. */ | |
2645 | tdiff = tlast - tfirst; | |
2646 | rdiff = rlast - rfirst; | |
2647 | ||
2648 | if (tdiff <= rdiff) | |
2649 | diff = tdiff; | |
2650 | else | |
2651 | diff = rdiff; | |
2652 | ||
2653 | if (rfirst == 0xffffffff) { | |
2654 | diff = tdiff; /* oops, pretend rdiff is infinite */ | |
2655 | if (diff > 0) | |
cea2e8a9 | 2656 | Perl_sv_catpvf(aTHX_ listsv, "%04x\t%04x\tXXXX\n", tfirst, tlast); |
a0ed51b3 | 2657 | else |
cea2e8a9 | 2658 | Perl_sv_catpvf(aTHX_ listsv, "%04x\t\tXXXX\n", tfirst); |
a0ed51b3 LW |
2659 | } |
2660 | else { | |
2661 | if (diff > 0) | |
cea2e8a9 | 2662 | Perl_sv_catpvf(aTHX_ listsv, "%04x\t%04x\t%04x\n", tfirst, tfirst + diff, rfirst); |
a0ed51b3 | 2663 | else |
cea2e8a9 | 2664 | Perl_sv_catpvf(aTHX_ listsv, "%04x\t\t%04x\n", tfirst, rfirst); |
a0ed51b3 LW |
2665 | |
2666 | if (rfirst + diff > max) | |
2667 | max = rfirst + diff; | |
2668 | rfirst += diff + 1; | |
2669 | if (!grows) { | |
2670 | if (rfirst <= 0x80) | |
2671 | ; | |
2672 | else if (rfirst <= 0x800) | |
2673 | grows |= (tfirst < 0x80); | |
2674 | else if (rfirst <= 0x10000) | |
2675 | grows |= (tfirst < 0x800); | |
2676 | else if (rfirst <= 0x200000) | |
2677 | grows |= (tfirst < 0x10000); | |
2678 | else if (rfirst <= 0x4000000) | |
2679 | grows |= (tfirst < 0x200000); | |
2680 | else if (rfirst <= 0x80000000) | |
2681 | grows |= (tfirst < 0x4000000); | |
2682 | } | |
2683 | } | |
2684 | tfirst += diff + 1; | |
2685 | } | |
2686 | ||
2687 | none = ++max; | |
2688 | if (del) | |
2689 | del = ++max; | |
2690 | ||
2691 | if (max > 0xffff) | |
2692 | bits = 32; | |
2693 | else if (max > 0xff) | |
2694 | bits = 16; | |
2695 | else | |
2696 | bits = 8; | |
2697 | ||
2698 | cSVOPo->op_sv = (SV*)swash_init("utf8", "", listsv, bits, none); | |
2699 | SvREFCNT_dec(listsv); | |
2700 | if (transv) | |
2701 | SvREFCNT_dec(transv); | |
2702 | ||
2703 | if (!del && havefinal) | |
2704 | (void)hv_store((HV*)SvRV((cSVOPo->op_sv)), "FINAL", 5, newSViv((IV)final), 0); | |
2705 | ||
2706 | if (grows && to_utf) | |
2707 | o->op_private |= OPpTRANS_GROWS; | |
2708 | ||
2709 | op_free(expr); | |
2710 | op_free(repl); | |
2711 | return o; | |
2712 | } | |
2713 | ||
2714 | tbl = (short*)cPVOPo->op_pv; | |
79072805 LW |
2715 | if (complement) { |
2716 | Zero(tbl, 256, short); | |
2717 | for (i = 0; i < tlen; i++) | |
ec49126f | 2718 | tbl[t[i]] = -1; |
79072805 LW |
2719 | for (i = 0, j = 0; i < 256; i++) { |
2720 | if (!tbl[i]) { | |
2721 | if (j >= rlen) { | |
a0ed51b3 | 2722 | if (del) |
79072805 LW |
2723 | tbl[i] = -2; |
2724 | else if (rlen) | |
ec49126f | 2725 | tbl[i] = r[j-1]; |
79072805 LW |
2726 | else |
2727 | tbl[i] = i; | |
2728 | } | |
2729 | else | |
ec49126f | 2730 | tbl[i] = r[j++]; |
79072805 LW |
2731 | } |
2732 | } | |
2733 | } | |
2734 | else { | |
a0ed51b3 | 2735 | if (!rlen && !del) { |
79072805 | 2736 | r = t; rlen = tlen; |
5d06d08e | 2737 | if (!squash) |
4757a243 | 2738 | o->op_private |= OPpTRANS_IDENTICAL; |
79072805 LW |
2739 | } |
2740 | for (i = 0; i < 256; i++) | |
2741 | tbl[i] = -1; | |
2742 | for (i = 0, j = 0; i < tlen; i++,j++) { | |
2743 | if (j >= rlen) { | |
a0ed51b3 | 2744 | if (del) { |
ec49126f | 2745 | if (tbl[t[i]] == -1) |
2746 | tbl[t[i]] = -2; | |
79072805 LW |
2747 | continue; |
2748 | } | |
2749 | --j; | |
2750 | } | |
ec49126f | 2751 | if (tbl[t[i]] == -1) |
2752 | tbl[t[i]] = r[j]; | |
79072805 LW |
2753 | } |
2754 | } | |
2755 | op_free(expr); | |
2756 | op_free(repl); | |
2757 | ||
11343788 | 2758 | return o; |
79072805 LW |
2759 | } |
2760 | ||
2761 | OP * | |
864dbfa3 | 2762 | Perl_newPMOP(pTHX_ I32 type, I32 flags) |
79072805 | 2763 | { |
11343788 | 2764 | dTHR; |
79072805 LW |
2765 | PMOP *pmop; |
2766 | ||
b7dc083c | 2767 | NewOp(1101, pmop, 1, PMOP); |
79072805 | 2768 | pmop->op_type = type; |
22c35a8c | 2769 | pmop->op_ppaddr = PL_ppaddr[type]; |
79072805 | 2770 | pmop->op_flags = flags; |
c07a80fd | 2771 | pmop->op_private = 0 | (flags >> 8); |
79072805 | 2772 | |
3280af22 | 2773 | if (PL_hints & HINT_RE_TAINT) |
b3eb6a9b | 2774 | pmop->op_pmpermflags |= PMf_RETAINT; |
3280af22 | 2775 | if (PL_hints & HINT_LOCALE) |
b3eb6a9b GS |
2776 | pmop->op_pmpermflags |= PMf_LOCALE; |
2777 | pmop->op_pmflags = pmop->op_pmpermflags; | |
36477c24 | 2778 | |
79072805 | 2779 | /* link into pm list */ |
3280af22 NIS |
2780 | if (type != OP_TRANS && PL_curstash) { |
2781 | pmop->op_pmnext = HvPMROOT(PL_curstash); | |
2782 | HvPMROOT(PL_curstash) = pmop; | |
79072805 LW |
2783 | } |
2784 | ||
2785 | return (OP*)pmop; | |
2786 | } | |
2787 | ||
2788 | OP * | |
864dbfa3 | 2789 | Perl_pmruntime(pTHX_ OP *o, OP *expr, OP *repl) |
79072805 | 2790 | { |
5c0ca799 | 2791 | dTHR; |
79072805 LW |
2792 | PMOP *pm; |
2793 | LOGOP *rcop; | |
ce862d02 | 2794 | I32 repl_has_vars = 0; |
79072805 | 2795 | |
11343788 MB |
2796 | if (o->op_type == OP_TRANS) |
2797 | return pmtrans(o, expr, repl); | |
79072805 | 2798 | |
3280af22 | 2799 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 2800 | pm = (PMOP*)o; |
79072805 LW |
2801 | |
2802 | if (expr->op_type == OP_CONST) { | |
463ee0b2 | 2803 | STRLEN plen; |
79072805 | 2804 | SV *pat = ((SVOP*)expr)->op_sv; |
463ee0b2 | 2805 | char *p = SvPV(pat, plen); |
11343788 | 2806 | if ((o->op_flags & OPf_SPECIAL) && strEQ(p, " ")) { |
93a17b20 | 2807 | sv_setpvn(pat, "\\s+", 3); |
463ee0b2 | 2808 | p = SvPV(pat, plen); |
79072805 LW |
2809 | pm->op_pmflags |= PMf_SKIPWHITE; |
2810 | } | |
cea2e8a9 | 2811 | pm->op_pmregexp = CALLREGCOMP(aTHX_ p, p + plen, pm); |
aeea060c | 2812 | if (strEQ("\\s+", pm->op_pmregexp->precomp)) |
85e6fe83 | 2813 | pm->op_pmflags |= PMf_WHITE; |
79072805 LW |
2814 | op_free(expr); |
2815 | } | |
2816 | else { | |
3280af22 NIS |
2817 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) |
2818 | expr = newUNOP((!(PL_hints & HINT_RE_EVAL) | |
2cd61cdb IZ |
2819 | ? OP_REGCRESET |
2820 | : OP_REGCMAYBE),0,expr); | |
463ee0b2 | 2821 | |
b7dc083c | 2822 | NewOp(1101, rcop, 1, LOGOP); |
79072805 | 2823 | rcop->op_type = OP_REGCOMP; |
22c35a8c | 2824 | rcop->op_ppaddr = PL_ppaddr[OP_REGCOMP]; |
79072805 | 2825 | rcop->op_first = scalar(expr); |
3280af22 | 2826 | rcop->op_flags |= ((PL_hints & HINT_RE_EVAL) |
2cd61cdb IZ |
2827 | ? (OPf_SPECIAL | OPf_KIDS) |
2828 | : OPf_KIDS); | |
79072805 | 2829 | rcop->op_private = 1; |
11343788 | 2830 | rcop->op_other = o; |
79072805 LW |
2831 | |
2832 | /* establish postfix order */ | |
3280af22 | 2833 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) { |
463ee0b2 LW |
2834 | LINKLIST(expr); |
2835 | rcop->op_next = expr; | |
2836 | ((UNOP*)expr)->op_first->op_next = (OP*)rcop; | |
2837 | } | |
2838 | else { | |
2839 | rcop->op_next = LINKLIST(expr); | |
2840 | expr->op_next = (OP*)rcop; | |
2841 | } | |
79072805 | 2842 | |
11343788 | 2843 | prepend_elem(o->op_type, scalar((OP*)rcop), o); |
79072805 LW |
2844 | } |
2845 | ||
2846 | if (repl) { | |
748a9306 | 2847 | OP *curop; |
0244c3a4 | 2848 | if (pm->op_pmflags & PMf_EVAL) { |
748a9306 | 2849 | curop = 0; |
57843af0 GS |
2850 | if (CopLINE(PL_curcop) < PL_multi_end) |
2851 | CopLINE_set(PL_curcop, PL_multi_end); | |
0244c3a4 | 2852 | } |
554b3eca | 2853 | #ifdef USE_THREADS |
2faa37cc | 2854 | else if (repl->op_type == OP_THREADSV |
554b3eca | 2855 | && strchr("&`'123456789+", |
533c011a | 2856 | PL_threadsv_names[repl->op_targ])) |
554b3eca MB |
2857 | { |
2858 | curop = 0; | |
2859 | } | |
2860 | #endif /* USE_THREADS */ | |
748a9306 LW |
2861 | else if (repl->op_type == OP_CONST) |
2862 | curop = repl; | |
79072805 | 2863 | else { |
79072805 LW |
2864 | OP *lastop = 0; |
2865 | for (curop = LINKLIST(repl); curop!=repl; curop = LINKLIST(curop)) { | |
22c35a8c | 2866 | if (PL_opargs[curop->op_type] & OA_DANGEROUS) { |
554b3eca | 2867 | #ifdef USE_THREADS |
ce862d02 IZ |
2868 | if (curop->op_type == OP_THREADSV) { |
2869 | repl_has_vars = 1; | |
be949f6f | 2870 | if (strchr("&`'123456789+", curop->op_private)) |
ce862d02 | 2871 | break; |
554b3eca MB |
2872 | } |
2873 | #else | |
79072805 | 2874 | if (curop->op_type == OP_GV) { |
638eceb6 | 2875 | GV *gv = cGVOPx_gv(curop); |
ce862d02 | 2876 | repl_has_vars = 1; |
93a17b20 | 2877 | if (strchr("&`'123456789+", *GvENAME(gv))) |
79072805 LW |
2878 | break; |
2879 | } | |
554b3eca | 2880 | #endif /* USE_THREADS */ |
79072805 LW |
2881 | else if (curop->op_type == OP_RV2CV) |
2882 | break; | |
2883 | else if (curop->op_type == OP_RV2SV || | |
2884 | curop->op_type == OP_RV2AV || | |
2885 | curop->op_type == OP_RV2HV || | |
2886 | curop->op_type == OP_RV2GV) { | |
2887 | if (lastop && lastop->op_type != OP_GV) /*funny deref?*/ | |
2888 | break; | |
2889 | } | |
748a9306 LW |
2890 | else if (curop->op_type == OP_PADSV || |
2891 | curop->op_type == OP_PADAV || | |
2892 | curop->op_type == OP_PADHV || | |
554b3eca | 2893 | curop->op_type == OP_PADANY) { |
ce862d02 | 2894 | repl_has_vars = 1; |
748a9306 | 2895 | } |
1167e5da SM |
2896 | else if (curop->op_type == OP_PUSHRE) |
2897 | ; /* Okay here, dangerous in newASSIGNOP */ | |
79072805 LW |
2898 | else |
2899 | break; | |
2900 | } | |
2901 | lastop = curop; | |
2902 | } | |
748a9306 | 2903 | } |
ce862d02 IZ |
2904 | if (curop == repl |
2905 | && !(repl_has_vars | |
2906 | && (!pm->op_pmregexp | |
2907 | || pm->op_pmregexp->reganch & ROPT_EVAL_SEEN))) { | |
748a9306 | 2908 | pm->op_pmflags |= PMf_CONST; /* const for long enough */ |
4633a7c4 | 2909 | pm->op_pmpermflags |= PMf_CONST; /* const for long enough */ |
11343788 | 2910 | prepend_elem(o->op_type, scalar(repl), o); |
748a9306 LW |
2911 | } |
2912 | else { | |
ce862d02 IZ |
2913 | if (curop == repl && !pm->op_pmregexp) { /* Has variables. */ |
2914 | pm->op_pmflags |= PMf_MAYBE_CONST; | |
2915 | pm->op_pmpermflags |= PMf_MAYBE_CONST; | |
2916 | } | |
b7dc083c | 2917 | NewOp(1101, rcop, 1, LOGOP); |
748a9306 | 2918 | rcop->op_type = OP_SUBSTCONT; |
22c35a8c | 2919 | rcop->op_ppaddr = PL_ppaddr[OP_SUBSTCONT]; |
748a9306 LW |
2920 | rcop->op_first = scalar(repl); |
2921 | rcop->op_flags |= OPf_KIDS; | |
2922 | rcop->op_private = 1; | |
11343788 | 2923 | rcop->op_other = o; |
748a9306 LW |
2924 | |
2925 | /* establish postfix order */ | |
2926 | rcop->op_next = LINKLIST(repl); | |
2927 | repl->op_next = (OP*)rcop; | |
2928 | ||
2929 | pm->op_pmreplroot = scalar((OP*)rcop); | |
2930 | pm->op_pmreplstart = LINKLIST(rcop); | |
2931 | rcop->op_next = 0; | |
79072805 LW |
2932 | } |
2933 | } | |
2934 | ||
2935 | return (OP*)pm; | |
2936 | } | |
2937 | ||
2938 | OP * | |
864dbfa3 | 2939 | Perl_newSVOP(pTHX_ I32 type, I32 flags, SV *sv) |
79072805 LW |
2940 | { |
2941 | SVOP *svop; | |
b7dc083c | 2942 | NewOp(1101, svop, 1, SVOP); |
79072805 | 2943 | svop->op_type = type; |
22c35a8c | 2944 | svop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2945 | svop->op_sv = sv; |
2946 | svop->op_next = (OP*)svop; | |
2947 | svop->op_flags = flags; | |
22c35a8c | 2948 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 2949 | scalar((OP*)svop); |
22c35a8c | 2950 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 2951 | svop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2952 | return CHECKOP(type, svop); |
79072805 LW |
2953 | } |
2954 | ||
2955 | OP * | |
350de78d GS |
2956 | Perl_newPADOP(pTHX_ I32 type, I32 flags, SV *sv) |
2957 | { | |
2958 | PADOP *padop; | |
2959 | NewOp(1101, padop, 1, PADOP); | |
2960 | padop->op_type = type; | |
2961 | padop->op_ppaddr = PL_ppaddr[type]; | |
2962 | padop->op_padix = pad_alloc(type, SVs_PADTMP); | |
7766f137 | 2963 | SvREFCNT_dec(PL_curpad[padop->op_padix]); |
350de78d | 2964 | PL_curpad[padop->op_padix] = sv; |
7766f137 | 2965 | SvPADTMP_on(sv); |
350de78d GS |
2966 | padop->op_next = (OP*)padop; |
2967 | padop->op_flags = flags; | |
2968 | if (PL_opargs[type] & OA_RETSCALAR) | |
2969 | scalar((OP*)padop); | |
2970 | if (PL_opargs[type] & OA_TARGET) | |
2971 | padop->op_targ = pad_alloc(type, SVs_PADTMP); | |
2972 | return CHECKOP(type, padop); | |
2973 | } | |
2974 | ||
2975 | OP * | |
864dbfa3 | 2976 | Perl_newGVOP(pTHX_ I32 type, I32 flags, GV *gv) |
79072805 | 2977 | { |
11343788 | 2978 | dTHR; |
350de78d | 2979 | #ifdef USE_ITHREADS |
743e66e6 | 2980 | GvIN_PAD_on(gv); |
350de78d GS |
2981 | return newPADOP(type, flags, SvREFCNT_inc(gv)); |
2982 | #else | |
7934575e | 2983 | return newSVOP(type, flags, SvREFCNT_inc(gv)); |
350de78d | 2984 | #endif |
79072805 LW |
2985 | } |
2986 | ||
2987 | OP * | |
864dbfa3 | 2988 | Perl_newPVOP(pTHX_ I32 type, I32 flags, char *pv) |
79072805 LW |
2989 | { |
2990 | PVOP *pvop; | |
b7dc083c | 2991 | NewOp(1101, pvop, 1, PVOP); |
79072805 | 2992 | pvop->op_type = type; |
22c35a8c | 2993 | pvop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2994 | pvop->op_pv = pv; |
2995 | pvop->op_next = (OP*)pvop; | |
2996 | pvop->op_flags = flags; | |
22c35a8c | 2997 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 2998 | scalar((OP*)pvop); |
22c35a8c | 2999 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 3000 | pvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 3001 | return CHECKOP(type, pvop); |
79072805 LW |
3002 | } |
3003 | ||
79072805 | 3004 | void |
864dbfa3 | 3005 | Perl_package(pTHX_ OP *o) |
79072805 | 3006 | { |
11343788 | 3007 | dTHR; |
93a17b20 | 3008 | SV *sv; |
79072805 | 3009 | |
3280af22 NIS |
3010 | save_hptr(&PL_curstash); |
3011 | save_item(PL_curstname); | |
11343788 | 3012 | if (o) { |
463ee0b2 LW |
3013 | STRLEN len; |
3014 | char *name; | |
11343788 | 3015 | sv = cSVOPo->op_sv; |
463ee0b2 | 3016 | name = SvPV(sv, len); |
3280af22 NIS |
3017 | PL_curstash = gv_stashpvn(name,len,TRUE); |
3018 | sv_setpvn(PL_curstname, name, len); | |
11343788 | 3019 | op_free(o); |
93a17b20 LW |
3020 | } |
3021 | else { | |
3280af22 NIS |
3022 | sv_setpv(PL_curstname,"<none>"); |
3023 | PL_curstash = Nullhv; | |
93a17b20 | 3024 | } |
7ad382f4 | 3025 | PL_hints |= HINT_BLOCK_SCOPE; |
3280af22 NIS |
3026 | PL_copline = NOLINE; |
3027 | PL_expect = XSTATE; | |
79072805 LW |
3028 | } |
3029 | ||
85e6fe83 | 3030 | void |
864dbfa3 | 3031 | Perl_utilize(pTHX_ int aver, I32 floor, OP *version, OP *id, OP *arg) |
85e6fe83 | 3032 | { |
a0d0e21e LW |
3033 | OP *pack; |
3034 | OP *meth; | |
3035 | OP *rqop; | |
3036 | OP *imop; | |
b1cb66bf | 3037 | OP *veop; |
78ca652e | 3038 | GV *gv; |
85e6fe83 | 3039 | |
a0d0e21e | 3040 | if (id->op_type != OP_CONST) |
cea2e8a9 | 3041 | Perl_croak(aTHX_ "Module name must be constant"); |
85e6fe83 | 3042 | |
b1cb66bf | 3043 | veop = Nullop; |
3044 | ||
3045 | if(version != Nullop) { | |
3046 | SV *vesv = ((SVOP*)version)->op_sv; | |
3047 | ||
3048 | if (arg == Nullop && !SvNIOK(vesv)) { | |
3049 | arg = version; | |
3050 | } | |
3051 | else { | |
3052 | OP *pack; | |
b1cb66bf | 3053 | |
3054 | if (version->op_type != OP_CONST || !SvNIOK(vesv)) | |
cea2e8a9 | 3055 | Perl_croak(aTHX_ "Version number must be constant number"); |
b1cb66bf | 3056 | |
3057 | /* Make copy of id so we don't free it twice */ | |
3058 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); | |
3059 | ||
3060 | /* Fake up a method call to VERSION */ | |
b1cb66bf | 3061 | veop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, |
3062 | append_elem(OP_LIST, | |
3063 | prepend_elem(OP_LIST, pack, list(version)), | |
f5d5a27c CS |
3064 | newSVOP(OP_METHOD_NAMED, 0, |
3065 | newSVpvn("VERSION", 7)))); | |
b1cb66bf | 3066 | } |
3067 | } | |
aeea060c | 3068 | |
a0d0e21e | 3069 | /* Fake up an import/unimport */ |
4633a7c4 LW |
3070 | if (arg && arg->op_type == OP_STUB) |
3071 | imop = arg; /* no import on explicit () */ | |
b1cb66bf | 3072 | else if(SvNIOK(((SVOP*)id)->op_sv)) { |
3073 | imop = Nullop; /* use 5.0; */ | |
3074 | } | |
4633a7c4 LW |
3075 | else { |
3076 | /* Make copy of id so we don't free it twice */ | |
3077 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); | |
4633a7c4 | 3078 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, |
a0d0e21e LW |
3079 | append_elem(OP_LIST, |
3080 | prepend_elem(OP_LIST, pack, list(arg)), | |
f5d5a27c CS |
3081 | newSVOP(OP_METHOD_NAMED, 0, |
3082 | aver ? newSVpvn("import", 6) | |
3083 | : newSVpvn("unimport", 8)))); | |
4633a7c4 LW |
3084 | } |
3085 | ||
78ca652e GS |
3086 | /* Fake up a require, handle override, if any */ |
3087 | gv = gv_fetchpv("require", FALSE, SVt_PVCV); | |
3088 | if (!(gv && GvIMPORTED_CV(gv))) | |
3089 | gv = gv_fetchpv("CORE::GLOBAL::require", FALSE, SVt_PVCV); | |
3090 | ||
3091 | if (gv && GvIMPORTED_CV(gv)) { | |
3092 | rqop = ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, | |
3093 | append_elem(OP_LIST, id, | |
3094 | scalar(newUNOP(OP_RV2CV, 0, | |
3095 | newGVOP(OP_GV, 0, | |
3096 | gv)))))); | |
3097 | } | |
3098 | else { | |
3099 | rqop = newUNOP(OP_REQUIRE, 0, id); | |
3100 | } | |
a0d0e21e LW |
3101 | |
3102 | /* Fake up the BEGIN {}, which does its thing immediately. */ | |
09bef843 | 3103 | newATTRSUB(floor, |
79cb57f6 | 3104 | newSVOP(OP_CONST, 0, newSVpvn("BEGIN", 5)), |
4633a7c4 | 3105 | Nullop, |
09bef843 | 3106 | Nullop, |
a0d0e21e | 3107 | append_elem(OP_LINESEQ, |
b1cb66bf | 3108 | append_elem(OP_LINESEQ, |
3109 | newSTATEOP(0, Nullch, rqop), | |
3110 | newSTATEOP(0, Nullch, veop)), | |
a0d0e21e | 3111 | newSTATEOP(0, Nullch, imop) )); |
85e6fe83 | 3112 | |
c305c6a0 | 3113 | PL_hints |= HINT_BLOCK_SCOPE; |
3280af22 NIS |
3114 | PL_copline = NOLINE; |
3115 | PL_expect = XSTATE; | |
85e6fe83 LW |
3116 | } |
3117 | ||
79072805 | 3118 | OP * |
864dbfa3 | 3119 | Perl_dofile(pTHX_ OP *term) |
78ca652e GS |
3120 | { |
3121 | OP *doop; | |
3122 | GV *gv; | |
3123 | ||
3124 | gv = gv_fetchpv("do", FALSE, SVt_PVCV); | |
3125 | if (!(gv && GvIMPORTED_CV(gv))) | |
3126 | gv = gv_fetchpv("CORE::GLOBAL::do", FALSE, SVt_PVCV); | |
3127 | ||
3128 | if (gv && GvIMPORTED_CV(gv)) { | |
3129 | doop = ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, | |
3130 | append_elem(OP_LIST, term, | |
3131 | scalar(newUNOP(OP_RV2CV, 0, | |
3132 | newGVOP(OP_GV, 0, | |
3133 | gv)))))); | |
3134 | } | |
3135 | else { | |
3136 | doop = newUNOP(OP_DOFILE, 0, scalar(term)); | |
3137 | } | |
3138 | return doop; | |
3139 | } | |
3140 | ||
3141 | OP * | |
864dbfa3 | 3142 | Perl_newSLICEOP(pTHX_ I32 flags, OP *subscript, OP *listval) |
79072805 LW |
3143 | { |
3144 | return newBINOP(OP_LSLICE, flags, | |
8990e307 LW |
3145 | list(force_list(subscript)), |
3146 | list(force_list(listval)) ); | |
79072805 LW |
3147 | } |
3148 | ||
76e3520e | 3149 | STATIC I32 |
cea2e8a9 | 3150 | S_list_assignment(pTHX_ register OP *o) |
79072805 | 3151 | { |
11343788 | 3152 | if (!o) |
79072805 LW |
3153 | return TRUE; |
3154 | ||
11343788 MB |
3155 | if (o->op_type == OP_NULL && o->op_flags & OPf_KIDS) |
3156 | o = cUNOPo->op_first; | |
79072805 | 3157 | |
11343788 | 3158 | if (o->op_type == OP_COND_EXPR) { |
1a67a97c SM |
3159 | I32 t = list_assignment(cLOGOPo->op_first->op_sibling); |
3160 | I32 f = list_assignment(cLOGOPo->op_first->op_sibling->op_sibling); | |
79072805 LW |
3161 | |
3162 | if (t && f) | |
3163 | return TRUE; | |
3164 | if (t || f) | |
3165 | yyerror("Assignment to both a list and a scalar"); | |
3166 | return FALSE; | |
3167 | } | |
3168 | ||
11343788 MB |
3169 | if (o->op_type == OP_LIST || o->op_flags & OPf_PARENS || |
3170 | o->op_type == OP_RV2AV || o->op_type == OP_RV2HV || | |
3171 | o->op_type == OP_ASLICE || o->op_type == OP_HSLICE) | |
79072805 LW |
3172 | return TRUE; |
3173 | ||
11343788 | 3174 | if (o->op_type == OP_PADAV || o->op_type == OP_PADHV) |
93a17b20 LW |
3175 | return TRUE; |
3176 | ||
11343788 | 3177 | if (o->op_type == OP_RV2SV) |
79072805 LW |
3178 | return FALSE; |
3179 | ||
3180 | return FALSE; | |
3181 | } | |
3182 | ||
3183 | OP * | |
864dbfa3 | 3184 | Perl_newASSIGNOP(pTHX_ I32 flags, OP *left, I32 optype, OP *right) |
79072805 | 3185 | { |
11343788 | 3186 | OP *o; |
79072805 | 3187 | |
a0d0e21e LW |
3188 | if (optype) { |
3189 | if (optype == OP_ANDASSIGN || optype == OP_ORASSIGN) { | |
3190 | return newLOGOP(optype, 0, | |
3191 | mod(scalar(left), optype), | |
3192 | newUNOP(OP_SASSIGN, 0, scalar(right))); | |
3193 | } | |
3194 | else { | |
3195 | return newBINOP(optype, OPf_STACKED, | |
3196 | mod(scalar(left), optype), scalar(right)); | |
3197 | } | |
3198 | } | |
3199 | ||
79072805 | 3200 | if (list_assignment(left)) { |
6ee623d5 | 3201 | dTHR; |
3280af22 NIS |
3202 | PL_modcount = 0; |
3203 | PL_eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ | |
463ee0b2 | 3204 | left = mod(left, OP_AASSIGN); |
3280af22 NIS |
3205 | if (PL_eval_start) |
3206 | PL_eval_start = 0; | |
748a9306 | 3207 | else { |
a0d0e21e LW |
3208 | op_free(left); |
3209 | op_free(right); | |
3210 | return Nullop; | |
3211 | } | |
11343788 | 3212 | o = newBINOP(OP_AASSIGN, flags, |
8990e307 LW |
3213 | list(force_list(right)), |
3214 | list(force_list(left)) ); | |
11343788 | 3215 | o->op_private = 0 | (flags >> 8); |
a0d0e21e | 3216 | if (!(left->op_private & OPpLVAL_INTRO)) { |
79072805 | 3217 | OP *curop; |
11343788 | 3218 | OP *lastop = o; |
3280af22 | 3219 | PL_generation++; |
11343788 | 3220 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
22c35a8c | 3221 | if (PL_opargs[curop->op_type] & OA_DANGEROUS) { |
79072805 | 3222 | if (curop->op_type == OP_GV) { |
638eceb6 | 3223 | GV *gv = cGVOPx_gv(curop); |
3280af22 | 3224 | if (gv == PL_defgv || SvCUR(gv) == PL_generation) |
79072805 | 3225 | break; |
3280af22 | 3226 | SvCUR(gv) = PL_generation; |
79072805 | 3227 | } |
748a9306 LW |
3228 | else if (curop->op_type == OP_PADSV || |
3229 | curop->op_type == OP_PADAV || | |
3230 | curop->op_type == OP_PADHV || | |
3231 | curop->op_type == OP_PADANY) { | |
3280af22 | 3232 | SV **svp = AvARRAY(PL_comppad_name); |
8e07c86e | 3233 | SV *sv = svp[curop->op_targ]; |
3280af22 | 3234 | if (SvCUR(sv) == PL_generation) |
748a9306 | 3235 | break; |
3280af22 | 3236 | SvCUR(sv) = PL_generation; /* (SvCUR not used any more) */ |
748a9306 | 3237 | } |
79072805 LW |
3238 | else if (curop->op_type == OP_RV2CV) |
3239 | break; | |
3240 | else if (curop->op_type == OP_RV2SV || | |
3241 | curop->op_type == OP_RV2AV || | |
3242 | curop->op_type == OP_RV2HV || | |
3243 | curop->op_type == OP_RV2GV) { | |
3244 | if (lastop->op_type != OP_GV) /* funny deref? */ | |
3245 | break; | |
3246 | } | |
1167e5da SM |
3247 | else if (curop->op_type == OP_PUSHRE) { |
3248 | if (((PMOP*)curop)->op_pmreplroot) { | |
3249 | GV *gv = (GV*)((PMOP*)curop)->op_pmreplroot; | |
3280af22 | 3250 | if (gv == PL_defgv || SvCUR(gv) == PL_generation) |
1167e5da | 3251 | break; |
3280af22 | 3252 | SvCUR(gv) = PL_generation; |
1167e5da SM |
3253 | } |
3254 | } | |
79072805 LW |
3255 | else |
3256 | break; | |
3257 | } | |
3258 | lastop = curop; | |
3259 | } | |
11343788 MB |
3260 | if (curop != o) |
3261 | o->op_private = OPpASSIGN_COMMON; | |
79072805 | 3262 | } |
c07a80fd | 3263 | if (right && right->op_type == OP_SPLIT) { |
3264 | OP* tmpop; | |
3265 | if ((tmpop = ((LISTOP*)right)->op_first) && | |
3266 | tmpop->op_type == OP_PUSHRE) | |
3267 | { | |
3268 | PMOP *pm = (PMOP*)tmpop; | |
3269 | if (left->op_type == OP_RV2AV && | |
3270 | !(left->op_private & OPpLVAL_INTRO) && | |
11343788 | 3271 | !(o->op_private & OPpASSIGN_COMMON) ) |
c07a80fd | 3272 | { |
3273 | tmpop = ((UNOP*)left)->op_first; | |
3274 | if (tmpop->op_type == OP_GV && !pm->op_pmreplroot) { | |
971a9dd3 GS |
3275 | #ifdef USE_ITHREADS |
3276 | pm->op_pmreplroot = (OP*)cPADOPx(tmpop)->op_padix; | |
3277 | cPADOPx(tmpop)->op_padix = 0; /* steal it */ | |
3278 | #else | |
3279 | pm->op_pmreplroot = (OP*)cSVOPx(tmpop)->op_sv; | |
3280 | cSVOPx(tmpop)->op_sv = Nullsv; /* steal it */ | |
3281 | #endif | |
c07a80fd | 3282 | pm->op_pmflags |= PMf_ONCE; |
11343788 | 3283 | tmpop = cUNOPo->op_first; /* to list (nulled) */ |
c07a80fd | 3284 | tmpop = ((UNOP*)tmpop)->op_first; /* to pushmark */ |
3285 | tmpop->op_sibling = Nullop; /* don't free split */ | |
3286 | right->op_next = tmpop->op_next; /* fix starting loc */ | |
11343788 | 3287 | op_free(o); /* blow off assign */ |
54310121 | 3288 | right->op_flags &= ~OPf_WANT; |
a5f75d66 | 3289 | /* "I don't know and I don't care." */ |
c07a80fd | 3290 | return right; |
3291 | } | |
3292 | } | |
3293 | else { | |
3280af22 | 3294 | if (PL_modcount < 10000 && |
c07a80fd | 3295 | ((LISTOP*)right)->op_last->op_type == OP_CONST) |
3296 | { | |
3297 | SV *sv = ((SVOP*)((LISTOP*)right)->op_last)->op_sv; | |
3298 | if (SvIVX(sv) == 0) | |
3280af22 | 3299 | sv_setiv(sv, PL_modcount+1); |
c07a80fd | 3300 | } |
3301 | } | |
3302 | } | |
3303 | } | |
11343788 | 3304 | return o; |
79072805 LW |
3305 | } |
3306 | if (!right) | |
3307 | right = newOP(OP_UNDEF, 0); | |
3308 | if (right->op_type == OP_READLINE) { | |
3309 | right->op_flags |= OPf_STACKED; | |
463ee0b2 | 3310 | return newBINOP(OP_NULL, flags, mod(scalar(left), OP_SASSIGN), scalar(right)); |
79072805 | 3311 | } |
a0d0e21e | 3312 | else { |
3280af22 | 3313 | PL_eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ |
11343788 | 3314 | o = newBINOP(OP_SASSIGN, flags, |
463ee0b2 | 3315 | scalar(right), mod(scalar(left), OP_SASSIGN) ); |
3280af22 NIS |
3316 | if (PL_eval_start) |
3317 | PL_eval_start = 0; | |
748a9306 | 3318 | else { |
11343788 | 3319 | op_free(o); |
a0d0e21e LW |
3320 | return Nullop; |
3321 | } | |
3322 | } | |
11343788 | 3323 | return o; |
79072805 LW |
3324 | } |
3325 | ||
3326 | OP * | |
864dbfa3 | 3327 | Perl_newSTATEOP(pTHX_ I32 flags, char *label, OP *o) |
79072805 | 3328 | { |
11343788 | 3329 | dTHR; |
bbce6d69 | 3330 | U32 seq = intro_my(); |
79072805 LW |
3331 | register COP *cop; |
3332 | ||
b7dc083c | 3333 | NewOp(1101, cop, 1, COP); |
57843af0 | 3334 | if (PERLDB_LINE && CopLINE(PL_curcop) && PL_curstash != PL_debstash) { |
8990e307 | 3335 | cop->op_type = OP_DBSTATE; |
22c35a8c | 3336 | cop->op_ppaddr = PL_ppaddr[ OP_DBSTATE ]; |
8990e307 LW |
3337 | } |
3338 | else { | |
3339 | cop->op_type = OP_NEXTSTATE; | |
22c35a8c | 3340 | cop->op_ppaddr = PL_ppaddr[ OP_NEXTSTATE ]; |
8990e307 | 3341 | } |
79072805 | 3342 | cop->op_flags = flags; |
a0ed51b3 | 3343 | cop->op_private = (PL_hints & HINT_UTF8); |
ff0cee69 | 3344 | #ifdef NATIVE_HINTS |
3345 | cop->op_private |= NATIVE_HINTS; | |
3346 | #endif | |
e24b16f9 | 3347 | PL_compiling.op_private = cop->op_private; |
79072805 LW |
3348 | cop->op_next = (OP*)cop; |
3349 | ||
463ee0b2 LW |
3350 | if (label) { |
3351 | cop->cop_label = label; | |
3280af22 | 3352 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 3353 | } |
bbce6d69 | 3354 | cop->cop_seq = seq; |
3280af22 | 3355 | cop->cop_arybase = PL_curcop->cop_arybase; |
0453d815 | 3356 | if (specialWARN(PL_curcop->cop_warnings)) |
599cee73 PM |
3357 | cop->cop_warnings = PL_curcop->cop_warnings ; |
3358 | else | |
3359 | cop->cop_warnings = newSVsv(PL_curcop->cop_warnings) ; | |
3360 | ||
79072805 | 3361 | |
3280af22 | 3362 | if (PL_copline == NOLINE) |
57843af0 | 3363 | CopLINE_set(cop, CopLINE(PL_curcop)); |
79072805 | 3364 | else { |
57843af0 | 3365 | CopLINE_set(cop, PL_copline); |
3280af22 | 3366 | PL_copline = NOLINE; |
79072805 | 3367 | } |
57843af0 GS |
3368 | #ifdef USE_ITHREADS |
3369 | CopFILE_set(cop, CopFILE(PL_curcop)); /* XXXXX share in a pvtable? */ | |
3370 | #else | |
cc49e20b | 3371 | CopFILEGV_set(cop, (GV*)SvREFCNT_inc(CopFILEGV(PL_curcop))); |
57843af0 | 3372 | #endif |
11faa288 | 3373 | CopSTASH_set(cop, PL_curstash); |
79072805 | 3374 | |
3280af22 | 3375 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
cc49e20b | 3376 | SV **svp = av_fetch(CopFILEAV(PL_curcop), (I32)CopLINE(cop), FALSE); |
3280af22 | 3377 | if (svp && *svp != &PL_sv_undef && !SvIOK(*svp)) { |
a0d0e21e | 3378 | (void)SvIOK_on(*svp); |
57b2e452 | 3379 | SvIVX(*svp) = PTR2IV(cop); |
93a17b20 LW |
3380 | } |
3381 | } | |
3382 | ||
11343788 | 3383 | return prepend_elem(OP_LINESEQ, (OP*)cop, o); |
79072805 LW |
3384 | } |
3385 | ||
bbce6d69 | 3386 | /* "Introduce" my variables to visible status. */ |
3387 | U32 | |
864dbfa3 | 3388 | Perl_intro_my(pTHX) |
bbce6d69 | 3389 | { |
3390 | SV **svp; | |
3391 | SV *sv; | |
3392 | I32 i; | |
3393 | ||
3280af22 NIS |
3394 | if (! PL_min_intro_pending) |
3395 | return PL_cop_seqmax; | |
bbce6d69 | 3396 | |
3280af22 NIS |
3397 | svp = AvARRAY(PL_comppad_name); |
3398 | for (i = PL_min_intro_pending; i <= PL_max_intro_pending; i++) { | |
3399 | if ((sv = svp[i]) && sv != &PL_sv_undef && !SvIVX(sv)) { | |
c53d7c7d | 3400 | SvIVX(sv) = PAD_MAX; /* Don't know scope end yet. */ |
65202027 | 3401 | SvNVX(sv) = (NV)PL_cop_seqmax; |
bbce6d69 | 3402 | } |
3403 | } | |
3280af22 NIS |
3404 | PL_min_intro_pending = 0; |
3405 | PL_comppad_name_fill = PL_max_intro_pending; /* Needn't search higher */ | |
3406 | return PL_cop_seqmax++; | |
bbce6d69 | 3407 | } |
3408 | ||
79072805 | 3409 | OP * |
864dbfa3 | 3410 | Perl_newLOGOP(pTHX_ I32 type, I32 flags, OP *first, OP *other) |
79072805 | 3411 | { |
883ffac3 CS |
3412 | return new_logop(type, flags, &first, &other); |
3413 | } | |
3414 | ||
3bd495df | 3415 | STATIC OP * |
cea2e8a9 | 3416 | S_new_logop(pTHX_ I32 type, I32 flags, OP** firstp, OP** otherp) |
883ffac3 | 3417 | { |
11343788 | 3418 | dTHR; |
79072805 | 3419 | LOGOP *logop; |
11343788 | 3420 | OP *o; |
883ffac3 CS |
3421 | OP *first = *firstp; |
3422 | OP *other = *otherp; | |
79072805 | 3423 | |
a0d0e21e LW |
3424 | if (type == OP_XOR) /* Not short circuit, but here by precedence. */ |
3425 | return newBINOP(type, flags, scalar(first), scalar(other)); | |
3426 | ||
8990e307 | 3427 | scalarboolean(first); |
79072805 LW |
3428 | /* optimize "!a && b" to "a || b", and "!a || b" to "a && b" */ |
3429 | if (first->op_type == OP_NOT && (first->op_flags & OPf_SPECIAL)) { | |
3430 | if (type == OP_AND || type == OP_OR) { | |
3431 | if (type == OP_AND) | |
3432 | type = OP_OR; | |
3433 | else | |
3434 | type = OP_AND; | |
11343788 | 3435 | o = first; |
883ffac3 | 3436 | first = *firstp = cUNOPo->op_first; |
11343788 MB |
3437 | if (o->op_next) |
3438 | first->op_next = o->op_next; | |
3439 | cUNOPo->op_first = Nullop; | |
3440 | op_free(o); | |
79072805 LW |
3441 | } |
3442 | } | |
3443 | if (first->op_type == OP_CONST) { | |
599cee73 | 3444 | if (ckWARN(WARN_PRECEDENCE) && (first->op_private & OPpCONST_BARE)) |
cea2e8a9 | 3445 | Perl_warner(aTHX_ WARN_PRECEDENCE, "Probable precedence problem on %s", |
22c35a8c | 3446 | PL_op_desc[type]); |
79072805 LW |
3447 | if ((type == OP_AND) == (SvTRUE(((SVOP*)first)->op_sv))) { |
3448 | op_free(first); | |
883ffac3 | 3449 | *firstp = Nullop; |
79072805 LW |
3450 | return other; |
3451 | } | |
3452 | else { | |
3453 | op_free(other); | |
883ffac3 | 3454 | *otherp = Nullop; |
79072805 LW |
3455 | return first; |
3456 | } | |
3457 | } | |
3458 | else if (first->op_type == OP_WANTARRAY) { | |
3459 | if (type == OP_AND) | |
3460 | list(other); | |
3461 | else | |
3462 | scalar(other); | |
3463 | } | |
599cee73 | 3464 | else if (ckWARN(WARN_UNSAFE) && (first->op_flags & OPf_KIDS)) { |
a6006777 | 3465 | OP *k1 = ((UNOP*)first)->op_first; |
3466 | OP *k2 = k1->op_sibling; | |
3467 | OPCODE warnop = 0; | |
3468 | switch (first->op_type) | |
3469 | { | |
3470 | case OP_NULL: | |
3471 | if (k2 && k2->op_type == OP_READLINE | |
3472 | && (k2->op_flags & OPf_STACKED) | |
55d729e4 | 3473 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
72b16652 | 3474 | { |
a6006777 | 3475 | warnop = k2->op_type; |
72b16652 | 3476 | } |
a6006777 | 3477 | break; |
3478 | ||
3479 | case OP_SASSIGN: | |
68dc0745 | 3480 | if (k1->op_type == OP_READDIR |
3481 | || k1->op_type == OP_GLOB | |
72b16652 | 3482 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) |
68dc0745 | 3483 | || k1->op_type == OP_EACH) |
72b16652 GS |
3484 | { |
3485 | warnop = ((k1->op_type == OP_NULL) | |
3486 | ? k1->op_targ : k1->op_type); | |
3487 | } | |
a6006777 | 3488 | break; |
3489 | } | |
8ebc5c01 | 3490 | if (warnop) { |
57843af0 GS |
3491 | line_t oldline = CopLINE(PL_curcop); |
3492 | CopLINE_set(PL_curcop, PL_copline); | |
cea2e8a9 | 3493 | Perl_warner(aTHX_ WARN_UNSAFE, |
599cee73 | 3494 | "Value of %s%s can be \"0\"; test with defined()", |
22c35a8c | 3495 | PL_op_desc[warnop], |
68dc0745 | 3496 | ((warnop == OP_READLINE || warnop == OP_GLOB) |
3497 | ? " construct" : "() operator")); | |
57843af0 | 3498 | CopLINE_set(PL_curcop, oldline); |
8ebc5c01 | 3499 | } |
a6006777 | 3500 | } |
79072805 LW |
3501 | |
3502 | if (!other) | |
3503 | return first; | |
3504 | ||
a0d0e21e LW |
3505 | if (type == OP_ANDASSIGN || type == OP_ORASSIGN) |
3506 | other->op_private |= OPpASSIGN_BACKWARDS; /* other is an OP_SASSIGN */ | |
3507 | ||
b7dc083c | 3508 | NewOp(1101, logop, 1, LOGOP); |
79072805 LW |
3509 | |
3510 | logop->op_type = type; | |
22c35a8c | 3511 | logop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
3512 | logop->op_first = first; |
3513 | logop->op_flags = flags | OPf_KIDS; | |
3514 | logop->op_other = LINKLIST(other); | |
c07a80fd | 3515 | logop->op_private = 1 | (flags >> 8); |
79072805 LW |
3516 | |
3517 | /* establish postfix order */ | |
3518 | logop->op_next = LINKLIST(first); | |
3519 | first->op_next = (OP*)logop; | |
3520 | first->op_sibling = other; | |
3521 | ||
11343788 MB |
3522 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
3523 | other->op_next = o; | |
79072805 | 3524 | |
11343788 | 3525 | return o; |
79072805 LW |
3526 | } |
3527 | ||
3528 | OP * | |
864dbfa3 | 3529 | Perl_newCONDOP(pTHX_ I32 flags, OP *first, OP *trueop, OP *falseop) |
79072805 | 3530 | { |
11343788 | 3531 | dTHR; |
1a67a97c SM |
3532 | LOGOP *logop; |
3533 | OP *start; | |
11343788 | 3534 | OP *o; |
79072805 | 3535 | |
b1cb66bf | 3536 | if (!falseop) |
3537 | return newLOGOP(OP_AND, 0, first, trueop); | |
3538 | if (!trueop) | |
3539 | return newLOGOP(OP_OR, 0, first, falseop); | |
79072805 | 3540 | |
8990e307 | 3541 | scalarboolean(first); |
79072805 LW |
3542 | if (first->op_type == OP_CONST) { |
3543 | if (SvTRUE(((SVOP*)first)->op_sv)) { | |
3544 | op_free(first); | |
b1cb66bf | 3545 | op_free(falseop); |
3546 | return trueop; | |
79072805 LW |
3547 | } |
3548 | else { | |
3549 | op_free(first); | |
b1cb66bf | 3550 | op_free(trueop); |
3551 | return falseop; | |
79072805 LW |
3552 | } |
3553 | } | |
3554 | else if (first->op_type == OP_WANTARRAY) { | |
b1cb66bf | 3555 | list(trueop); |
3556 | scalar(falseop); | |
79072805 | 3557 | } |
1a67a97c SM |
3558 | NewOp(1101, logop, 1, LOGOP); |
3559 | logop->op_type = OP_COND_EXPR; | |
3560 | logop->op_ppaddr = PL_ppaddr[OP_COND_EXPR]; | |
3561 | logop->op_first = first; | |
3562 | logop->op_flags = flags | OPf_KIDS; | |
3563 | logop->op_private = 1 | (flags >> 8); | |
3564 | logop->op_other = LINKLIST(trueop); | |
3565 | logop->op_next = LINKLIST(falseop); | |
79072805 | 3566 | |
79072805 LW |
3567 | |
3568 | /* establish postfix order */ | |
1a67a97c SM |
3569 | start = LINKLIST(first); |
3570 | first->op_next = (OP*)logop; | |
79072805 | 3571 | |
b1cb66bf | 3572 | first->op_sibling = trueop; |
3573 | trueop->op_sibling = falseop; | |
1a67a97c | 3574 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
79072805 | 3575 | |
1a67a97c | 3576 | trueop->op_next = falseop->op_next = o; |
79072805 | 3577 | |
1a67a97c | 3578 | o->op_next = start; |
11343788 | 3579 | return o; |
79072805 LW |
3580 | } |
3581 | ||
3582 | OP * | |
864dbfa3 | 3583 | Perl_newRANGE(pTHX_ I32 flags, OP *left, OP *right) |
79072805 | 3584 | { |
b35b2403 | 3585 | dTHR; |
1a67a97c | 3586 | LOGOP *range; |
79072805 LW |
3587 | OP *flip; |
3588 | OP *flop; | |
1a67a97c | 3589 | OP *leftstart; |
11343788 | 3590 | OP *o; |
79072805 | 3591 | |
1a67a97c | 3592 | NewOp(1101, range, 1, LOGOP); |
79072805 | 3593 | |
1a67a97c SM |
3594 | range->op_type = OP_RANGE; |
3595 | range->op_ppaddr = PL_ppaddr[OP_RANGE]; | |
3596 | range->op_first = left; | |
3597 | range->op_flags = OPf_KIDS; | |
3598 | leftstart = LINKLIST(left); | |
3599 | range->op_other = LINKLIST(right); | |
3600 | range->op_private = 1 | (flags >> 8); | |
79072805 LW |
3601 | |
3602 | left->op_sibling = right; | |
3603 | ||
1a67a97c SM |
3604 | range->op_next = (OP*)range; |
3605 | flip = newUNOP(OP_FLIP, flags, (OP*)range); | |
79072805 | 3606 | flop = newUNOP(OP_FLOP, 0, flip); |
11343788 | 3607 | o = newUNOP(OP_NULL, 0, flop); |
79072805 | 3608 | linklist(flop); |
1a67a97c | 3609 | range->op_next = leftstart; |
79072805 LW |
3610 | |
3611 | left->op_next = flip; | |
3612 | right->op_next = flop; | |
3613 | ||
1a67a97c SM |
3614 | range->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
3615 | sv_upgrade(PAD_SV(range->op_targ), SVt_PVNV); | |
ed6116ce | 3616 | flip->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 LW |
3617 | sv_upgrade(PAD_SV(flip->op_targ), SVt_PVNV); |
3618 | ||
3619 | flip->op_private = left->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
3620 | flop->op_private = right->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
3621 | ||
11343788 | 3622 | flip->op_next = o; |
79072805 | 3623 | if (!flip->op_private || !flop->op_private) |
11343788 | 3624 | linklist(o); /* blow off optimizer unless constant */ |
79072805 | 3625 | |
11343788 | 3626 | return o; |
79072805 LW |
3627 | } |
3628 | ||
3629 | OP * | |
864dbfa3 | 3630 | Perl_newLOOPOP(pTHX_ I32 flags, I32 debuggable, OP *expr, OP *block) |
79072805 | 3631 | { |
11343788 | 3632 | dTHR; |
463ee0b2 | 3633 | OP* listop; |
11343788 | 3634 | OP* o; |
463ee0b2 | 3635 | int once = block && block->op_flags & OPf_SPECIAL && |
a0d0e21e | 3636 | (block->op_type == OP_ENTERSUB || block->op_type == OP_NULL); |
93a17b20 | 3637 | |
463ee0b2 LW |
3638 | if (expr) { |
3639 | if (once && expr->op_type == OP_CONST && !SvTRUE(((SVOP*)expr)->op_sv)) | |
3640 | return block; /* do {} while 0 does once */ | |
fb73857a | 3641 | if (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB |
3642 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB)) { | |
774d564b | 3643 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 3644 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 GS |
3645 | } else if (expr->op_flags & OPf_KIDS) { |
3646 | OP *k1 = ((UNOP*)expr)->op_first; | |
3647 | OP *k2 = (k1) ? k1->op_sibling : NULL; | |
3648 | switch (expr->op_type) { | |
3649 | case OP_NULL: | |
3650 | if (k2 && k2->op_type == OP_READLINE | |
3651 | && (k2->op_flags & OPf_STACKED) | |
3652 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) | |
3653 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3654 | break; | |
3655 | ||
3656 | case OP_SASSIGN: | |
3657 | if (k1->op_type == OP_READDIR | |
3658 | || k1->op_type == OP_GLOB | |
72b16652 | 3659 | || (k1->op_type == OP_NULL && k1->op_targ == OP_NULL) |
55d729e4 GS |
3660 | || k1->op_type == OP_EACH) |
3661 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3662 | break; | |
3663 | } | |
774d564b | 3664 | } |
463ee0b2 | 3665 | } |
93a17b20 | 3666 | |
8990e307 | 3667 | listop = append_elem(OP_LINESEQ, block, newOP(OP_UNSTACK, 0)); |
883ffac3 | 3668 | o = new_logop(OP_AND, 0, &expr, &listop); |
463ee0b2 | 3669 | |
883ffac3 CS |
3670 | if (listop) |
3671 | ((LISTOP*)listop)->op_last->op_next = LINKLIST(o); | |
79072805 | 3672 | |
11343788 MB |
3673 | if (once && o != listop) |
3674 | o->op_next = ((LOGOP*)cUNOPo->op_first)->op_other; | |
79072805 | 3675 | |
11343788 MB |
3676 | if (o == listop) |
3677 | o = newUNOP(OP_NULL, 0, o); /* or do {} while 1 loses outer block */ | |
748a9306 | 3678 | |
11343788 MB |
3679 | o->op_flags |= flags; |
3680 | o = scope(o); | |
3681 | o->op_flags |= OPf_SPECIAL; /* suppress POPBLOCK curpm restoration*/ | |
3682 | return o; | |
79072805 LW |
3683 | } |
3684 | ||
3685 | OP * | |
864dbfa3 | 3686 | Perl_newWHILEOP(pTHX_ I32 flags, I32 debuggable, LOOP *loop, I32 whileline, OP *expr, OP *block, OP *cont) |
79072805 | 3687 | { |
11343788 | 3688 | dTHR; |
79072805 LW |
3689 | OP *redo; |
3690 | OP *next = 0; | |
3691 | OP *listop; | |
11343788 | 3692 | OP *o; |
79072805 LW |
3693 | OP *condop; |
3694 | ||
fb73857a | 3695 | if (expr && (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB |
3696 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB))) { | |
748a9306 | 3697 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 3698 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 GS |
3699 | } else if (expr && (expr->op_flags & OPf_KIDS)) { |
3700 | OP *k1 = ((UNOP*)expr)->op_first; | |
3701 | OP *k2 = (k1) ? k1->op_sibling : NULL; | |
3702 | switch (expr->op_type) { | |
3703 | case OP_NULL: | |
3704 | if (k2 && k2->op_type == OP_READLINE | |
3705 | && (k2->op_flags & OPf_STACKED) | |
3706 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) | |
3707 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3708 | break; | |
3709 | ||
3710 | case OP_SASSIGN: | |
3711 | if (k1->op_type == OP_READDIR | |
3712 | || k1->op_type == OP_GLOB | |
72b16652 | 3713 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) |
55d729e4 GS |
3714 | || k1->op_type == OP_EACH) |
3715 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3716 | break; | |
3717 | } | |
748a9306 | 3718 | } |
79072805 LW |
3719 | |
3720 | if (!block) | |
3721 | block = newOP(OP_NULL, 0); | |
3722 | ||
3723 | if (cont) | |
3724 | next = LINKLIST(cont); | |
fb73857a | 3725 | if (expr) { |
79072805 | 3726 | cont = append_elem(OP_LINESEQ, cont, newOP(OP_UNSTACK, 0)); |
fb73857a | 3727 | if ((line_t)whileline != NOLINE) { |
3280af22 | 3728 | PL_copline = whileline; |
fb73857a | 3729 | cont = append_elem(OP_LINESEQ, cont, |
3730 | newSTATEOP(0, Nullch, Nullop)); | |
3731 | } | |
3732 | } | |
79072805 | 3733 | |
463ee0b2 | 3734 | listop = append_list(OP_LINESEQ, (LISTOP*)block, (LISTOP*)cont); |
79072805 LW |
3735 | redo = LINKLIST(listop); |
3736 | ||
3737 | if (expr) { | |
3280af22 | 3738 | PL_copline = whileline; |
883ffac3 CS |
3739 | scalar(listop); |
3740 | o = new_logop(OP_AND, 0, &expr, &listop); | |
11343788 | 3741 | if (o == expr && o->op_type == OP_CONST && !SvTRUE(cSVOPo->op_sv)) { |
85e6fe83 | 3742 | op_free(expr); /* oops, it's a while (0) */ |
463ee0b2 | 3743 | op_free((OP*)loop); |
883ffac3 | 3744 | return Nullop; /* listop already freed by new_logop */ |
463ee0b2 | 3745 | } |
883ffac3 CS |
3746 | if (listop) |
3747 | ((LISTOP*)listop)->op_last->op_next = condop = | |
3748 | (o == listop ? redo : LINKLIST(o)); | |
79072805 LW |
3749 | if (!next) |
3750 | next = condop; | |
3751 | } | |
3752 | else | |
11343788 | 3753 | o = listop; |
79072805 LW |
3754 | |
3755 | if (!loop) { | |
b7dc083c | 3756 | NewOp(1101,loop,1,LOOP); |
79072805 | 3757 | loop->op_type = OP_ENTERLOOP; |
22c35a8c | 3758 | loop->op_ppaddr = PL_ppaddr[OP_ENTERLOOP]; |
79072805 LW |
3759 | loop->op_private = 0; |
3760 | loop->op_next = (OP*)loop; | |
3761 | } | |
3762 | ||
11343788 | 3763 | o = newBINOP(OP_LEAVELOOP, 0, (OP*)loop, o); |
79072805 LW |
3764 | |
3765 | loop->op_redoop = redo; | |
11343788 | 3766 | loop->op_lastop = o; |
79072805 LW |
3767 | |
3768 | if (next) | |
3769 | loop->op_nextop = next; | |
3770 | else | |
11343788 | 3771 | loop->op_nextop = o; |
79072805 | 3772 | |
11343788 MB |
3773 | o->op_flags |= flags; |
3774 | o->op_private |= (flags >> 8); | |
3775 | return o; | |
79072805 LW |
3776 | } |
3777 | ||
3778 | OP * | |
864dbfa3 | 3779 | Perl_newFOROP(pTHX_ I32 flags,char *label,line_t forline,OP *sv,OP *expr,OP *block,OP *cont) |
79072805 LW |
3780 | { |
3781 | LOOP *loop; | |
b7dc083c | 3782 | LOOP *tmp; |
fb73857a | 3783 | OP *wop; |
85e6fe83 | 3784 | int padoff = 0; |
4633a7c4 | 3785 | I32 iterflags = 0; |
79072805 | 3786 | |
79072805 | 3787 | if (sv) { |
85e6fe83 | 3788 | if (sv->op_type == OP_RV2SV) { /* symbol table variable */ |
748a9306 | 3789 | sv->op_type = OP_RV2GV; |
22c35a8c | 3790 | sv->op_ppaddr = PL_ppaddr[OP_RV2GV]; |
79072805 | 3791 | } |
85e6fe83 LW |
3792 | else if (sv->op_type == OP_PADSV) { /* private variable */ |
3793 | padoff = sv->op_targ; | |
743e66e6 | 3794 | sv->op_targ = 0; |
85e6fe83 LW |
3795 | op_free(sv); |
3796 | sv = Nullop; | |
3797 | } | |
54b9620d MB |
3798 | else if (sv->op_type == OP_THREADSV) { /* per-thread variable */ |
3799 | padoff = sv->op_targ; | |
743e66e6 | 3800 | sv->op_targ = 0; |
54b9620d MB |
3801 | iterflags |= OPf_SPECIAL; |
3802 | op_free(sv); | |
3803 | sv = Nullop; | |
3804 | } | |
79072805 | 3805 | else |
cea2e8a9 | 3806 | Perl_croak(aTHX_ "Can't use %s for loop variable", PL_op_desc[sv->op_type]); |
79072805 LW |
3807 | } |
3808 | else { | |
54b9620d MB |
3809 | #ifdef USE_THREADS |
3810 | padoff = find_threadsv("_"); | |
3811 | iterflags |= OPf_SPECIAL; | |
3812 | #else | |
3280af22 | 3813 | sv = newGVOP(OP_GV, 0, PL_defgv); |
54b9620d | 3814 | #endif |
79072805 | 3815 | } |
5f05dabc | 3816 | if (expr->op_type == OP_RV2AV || expr->op_type == OP_PADAV) { |
89ea2908 | 3817 | expr = mod(force_list(scalar(ref(expr, OP_ITER))), OP_GREPSTART); |
4633a7c4 LW |
3818 | iterflags |= OPf_STACKED; |
3819 | } | |
89ea2908 GA |
3820 | else if (expr->op_type == OP_NULL && |
3821 | (expr->op_flags & OPf_KIDS) && | |
3822 | ((BINOP*)expr)->op_first->op_type == OP_FLOP) | |
3823 | { | |
3824 | /* Basically turn for($x..$y) into the same as for($x,$y), but we | |
3825 | * set the STACKED flag to indicate that these values are to be | |
3826 | * treated as min/max values by 'pp_iterinit'. | |
3827 | */ | |
3828 | UNOP* flip = (UNOP*)((UNOP*)((BINOP*)expr)->op_first)->op_first; | |
1a67a97c | 3829 | LOGOP* range = (LOGOP*) flip->op_first; |
89ea2908 GA |
3830 | OP* left = range->op_first; |
3831 | OP* right = left->op_sibling; | |
5152d7c7 | 3832 | LISTOP* listop; |
89ea2908 GA |
3833 | |
3834 | range->op_flags &= ~OPf_KIDS; | |
3835 | range->op_first = Nullop; | |
3836 | ||
5152d7c7 | 3837 | listop = (LISTOP*)newLISTOP(OP_LIST, 0, left, right); |
1a67a97c SM |
3838 | listop->op_first->op_next = range->op_next; |
3839 | left->op_next = range->op_other; | |
5152d7c7 GS |
3840 | right->op_next = (OP*)listop; |
3841 | listop->op_next = listop->op_first; | |
89ea2908 GA |
3842 | |
3843 | op_free(expr); | |
5152d7c7 | 3844 | expr = (OP*)(listop); |
89ea2908 GA |
3845 | null(expr); |
3846 | iterflags |= OPf_STACKED; | |
3847 | } | |
3848 | else { | |
3849 | expr = mod(force_list(expr), OP_GREPSTART); | |
3850 | } | |
3851 | ||
3852 | ||
4633a7c4 | 3853 | loop = (LOOP*)list(convert(OP_ENTERITER, iterflags, |
89ea2908 | 3854 | append_elem(OP_LIST, expr, scalar(sv)))); |
85e6fe83 | 3855 | assert(!loop->op_next); |
b7dc083c NIS |
3856 | #ifdef PL_OP_SLAB_ALLOC |
3857 | NewOp(1234,tmp,1,LOOP); | |
3858 | Copy(loop,tmp,1,LOOP); | |
3859 | loop = tmp; | |
3860 | #else | |
85e6fe83 | 3861 | Renew(loop, 1, LOOP); |
b7dc083c | 3862 | #endif |
85e6fe83 | 3863 | loop->op_targ = padoff; |
fb73857a | 3864 | wop = newWHILEOP(flags, 1, loop, forline, newOP(OP_ITER, 0), block, cont); |
3280af22 | 3865 | PL_copline = forline; |
fb73857a | 3866 | return newSTATEOP(0, label, wop); |
79072805 LW |
3867 | } |
3868 | ||
8990e307 | 3869 | OP* |
864dbfa3 | 3870 | Perl_newLOOPEX(pTHX_ I32 type, OP *label) |
8990e307 | 3871 | { |
11343788 MB |
3872 | dTHR; |
3873 | OP *o; | |
2d8e6c8d GS |
3874 | STRLEN n_a; |
3875 | ||
8990e307 | 3876 | if (type != OP_GOTO || label->op_type == OP_CONST) { |
cdaebead MB |
3877 | /* "last()" means "last" */ |
3878 | if (label->op_type == OP_STUB && (label->op_flags & OPf_PARENS)) | |
3879 | o = newOP(type, OPf_SPECIAL); | |
3880 | else { | |
3881 | o = newPVOP(type, 0, savepv(label->op_type == OP_CONST | |
2d8e6c8d | 3882 | ? SvPVx(((SVOP*)label)->op_sv, n_a) |
cdaebead MB |
3883 | : "")); |
3884 | } | |
8990e307 LW |
3885 | op_free(label); |
3886 | } | |
3887 | else { | |
a0d0e21e LW |
3888 | if (label->op_type == OP_ENTERSUB) |
3889 | label = newUNOP(OP_REFGEN, 0, mod(label, OP_REFGEN)); | |
11343788 | 3890 | o = newUNOP(type, OPf_STACKED, label); |
8990e307 | 3891 | } |
3280af22 | 3892 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 3893 | return o; |
8990e307 LW |
3894 | } |
3895 | ||
79072805 | 3896 | void |
864dbfa3 | 3897 | Perl_cv_undef(pTHX_ CV *cv) |
79072805 | 3898 | { |
11343788 MB |
3899 | dTHR; |
3900 | #ifdef USE_THREADS | |
e858de61 MB |
3901 | if (CvMUTEXP(cv)) { |
3902 | MUTEX_DESTROY(CvMUTEXP(cv)); | |
3903 | Safefree(CvMUTEXP(cv)); | |
3904 | CvMUTEXP(cv) = 0; | |
3905 | } | |
11343788 MB |
3906 | #endif /* USE_THREADS */ |
3907 | ||
a0d0e21e | 3908 | if (!CvXSUB(cv) && CvROOT(cv)) { |
11343788 MB |
3909 | #ifdef USE_THREADS |
3910 | if (CvDEPTH(cv) || (CvOWNER(cv) && CvOWNER(cv) != thr)) | |
cea2e8a9 | 3911 | Perl_croak(aTHX_ "Can't undef active subroutine"); |
11343788 | 3912 | #else |
a0d0e21e | 3913 | if (CvDEPTH(cv)) |
cea2e8a9 | 3914 | Perl_croak(aTHX_ "Can't undef active subroutine"); |
11343788 | 3915 | #endif /* USE_THREADS */ |
8990e307 | 3916 | ENTER; |
a0d0e21e | 3917 | |
7766f137 | 3918 | SAVEVPTR(PL_curpad); |
3280af22 | 3919 | PL_curpad = 0; |
a0d0e21e | 3920 | |
a5f75d66 | 3921 | if (!CvCLONED(cv)) |
748a9306 | 3922 | op_free(CvROOT(cv)); |
79072805 | 3923 | CvROOT(cv) = Nullop; |
8990e307 | 3924 | LEAVE; |
79072805 | 3925 | } |
1d5db326 | 3926 | SvPOK_off((SV*)cv); /* forget prototype */ |
44a8e56a | 3927 | CvFLAGS(cv) = 0; |
8e07c86e AD |
3928 | SvREFCNT_dec(CvGV(cv)); |
3929 | CvGV(cv) = Nullgv; | |
3930 | SvREFCNT_dec(CvOUTSIDE(cv)); | |
3931 | CvOUTSIDE(cv) = Nullcv; | |
3932 | if (CvPADLIST(cv)) { | |
8ebc5c01 | 3933 | /* may be during global destruction */ |
3934 | if (SvREFCNT(CvPADLIST(cv))) { | |
93965878 | 3935 | I32 i = AvFILLp(CvPADLIST(cv)); |
8ebc5c01 | 3936 | while (i >= 0) { |
3937 | SV** svp = av_fetch(CvPADLIST(cv), i--, FALSE); | |
46fc3d4c | 3938 | SV* sv = svp ? *svp : Nullsv; |
3939 | if (!sv) | |
3940 | continue; | |
3280af22 NIS |
3941 | if (sv == (SV*)PL_comppad_name) |
3942 | PL_comppad_name = Nullav; | |
3943 | else if (sv == (SV*)PL_comppad) { | |
3944 | PL_comppad = Nullav; | |
3945 | PL_curpad = Null(SV**); | |
46fc3d4c | 3946 | } |
3947 | SvREFCNT_dec(sv); | |
8ebc5c01 | 3948 | } |
3949 | SvREFCNT_dec((SV*)CvPADLIST(cv)); | |
8e07c86e | 3950 | } |
8e07c86e AD |
3951 | CvPADLIST(cv) = Nullav; |
3952 | } | |
79072805 LW |
3953 | } |
3954 | ||
76e3520e | 3955 | STATIC void |
743e66e6 | 3956 | S_cv_dump(pTHX_ CV *cv) |
5f05dabc | 3957 | { |
62fde642 | 3958 | #ifdef DEBUGGING |
5f05dabc | 3959 | CV *outside = CvOUTSIDE(cv); |
3960 | AV* padlist = CvPADLIST(cv); | |
4fdae800 | 3961 | AV* pad_name; |
3962 | AV* pad; | |
3963 | SV** pname; | |
3964 | SV** ppad; | |
5f05dabc | 3965 | I32 ix; |
3966 | ||
b900a521 JH |
3967 | PerlIO_printf(Perl_debug_log, |
3968 | "\tCV=0x%"UVxf" (%s), OUTSIDE=0x%"UVxf" (%s)\n", | |
3969 | PTR2UV(cv), | |
ab50184a | 3970 | (CvANON(cv) ? "ANON" |
6b88bc9c | 3971 | : (cv == PL_main_cv) ? "MAIN" |
33b8ce05 | 3972 | : CvUNIQUE(cv) ? "UNIQUE" |
44a8e56a | 3973 | : CvGV(cv) ? GvNAME(CvGV(cv)) : "UNDEFINED"), |
b900a521 | 3974 | PTR2UV(outside), |
ab50184a CS |
3975 | (!outside ? "null" |
3976 | : CvANON(outside) ? "ANON" | |
6b88bc9c | 3977 | : (outside == PL_main_cv) ? "MAIN" |
07055b4c | 3978 | : CvUNIQUE(outside) ? "UNIQUE" |
44a8e56a | 3979 | : CvGV(outside) ? GvNAME(CvGV(outside)) : "UNDEFINED")); |
5f05dabc | 3980 | |
4fdae800 | 3981 | if (!padlist) |
3982 | return; | |
3983 | ||
3984 | pad_name = (AV*)*av_fetch(padlist, 0, FALSE); | |
3985 | pad = (AV*)*av_fetch(padlist, 1, FALSE); | |
3986 | pname = AvARRAY(pad_name); | |
3987 | ppad = AvARRAY(pad); | |
3988 | ||
93965878 | 3989 | for (ix = 1; ix <= AvFILLp(pad_name); ix++) { |
5f05dabc | 3990 | if (SvPOK(pname[ix])) |
b900a521 JH |
3991 | PerlIO_printf(Perl_debug_log, |
3992 | "\t%4d. 0x%"UVxf" (%s\"%s\" %"IVdf"-%"IVdf")\n", | |
3993 | ix, PTR2UV(ppad[ix]), | |
4fdae800 | 3994 | SvFAKE(pname[ix]) ? "FAKE " : "", |
3995 | SvPVX(pname[ix]), | |
b900a521 JH |
3996 | (IV)I_32(SvNVX(pname[ix])), |
3997 | SvIVX(pname[ix])); | |
5f05dabc | 3998 | } |
743e66e6 | 3999 | #endif /* DEBUGGING */ |
62fde642 | 4000 | } |
5f05dabc | 4001 | |
76e3520e | 4002 | STATIC CV * |
cea2e8a9 | 4003 | S_cv_clone2(pTHX_ CV *proto, CV *outside) |
748a9306 | 4004 | { |
11343788 | 4005 | dTHR; |
748a9306 LW |
4006 | AV* av; |
4007 | I32 ix; | |
4008 | AV* protopadlist = CvPADLIST(proto); | |
4009 | AV* protopad_name = (AV*)*av_fetch(protopadlist, 0, FALSE); | |
4010 | AV* protopad = (AV*)*av_fetch(protopadlist, 1, FALSE); | |
5f05dabc | 4011 | SV** pname = AvARRAY(protopad_name); |
4012 | SV** ppad = AvARRAY(protopad); | |
93965878 NIS |
4013 | I32 fname = AvFILLp(protopad_name); |
4014 | I32 fpad = AvFILLp(protopad); | |
748a9306 LW |
4015 | AV* comppadlist; |
4016 | CV* cv; | |
4017 | ||
07055b4c CS |
4018 | assert(!CvUNIQUE(proto)); |
4019 | ||
748a9306 | 4020 | ENTER; |
7766f137 | 4021 | SAVEVPTR(PL_curpad); |
3280af22 NIS |
4022 | SAVESPTR(PL_comppad); |
4023 | SAVESPTR(PL_comppad_name); | |
4024 | SAVESPTR(PL_compcv); | |
748a9306 | 4025 | |
3280af22 | 4026 | cv = PL_compcv = (CV*)NEWSV(1104,0); |
fa83b5b6 | 4027 | sv_upgrade((SV *)cv, SvTYPE(proto)); |
a5f75d66 | 4028 | CvCLONED_on(cv); |
5f05dabc | 4029 | if (CvANON(proto)) |
4030 | CvANON_on(cv); | |
748a9306 | 4031 | |
11343788 | 4032 | #ifdef USE_THREADS |
12ca11f6 | 4033 | New(666, CvMUTEXP(cv), 1, perl_mutex); |
11343788 | 4034 | MUTEX_INIT(CvMUTEXP(cv)); |
11343788 MB |
4035 | CvOWNER(cv) = 0; |
4036 | #endif /* USE_THREADS */ | |
57843af0 | 4037 | CvFILE(cv) = CvFILE(proto); |
44a8e56a | 4038 | CvGV(cv) = (GV*)SvREFCNT_inc(CvGV(proto)); |
748a9306 LW |
4039 | CvSTASH(cv) = CvSTASH(proto); |
4040 | CvROOT(cv) = CvROOT(proto); | |
4041 | CvSTART(cv) = CvSTART(proto); | |
5f05dabc | 4042 | if (outside) |
4043 | CvOUTSIDE(cv) = (CV*)SvREFCNT_inc(outside); | |
748a9306 | 4044 | |
68dc0745 | 4045 | if (SvPOK(proto)) |
4046 | sv_setpvn((SV*)cv, SvPVX(proto), SvCUR(proto)); | |
4047 | ||
3280af22 | 4048 | PL_comppad_name = newAV(); |
46fc3d4c | 4049 | for (ix = fname; ix >= 0; ix--) |
3280af22 | 4050 | av_store(PL_comppad_name, ix, SvREFCNT_inc(pname[ix])); |
748a9306 | 4051 | |
3280af22 | 4052 | PL_comppad = newAV(); |
748a9306 LW |
4053 | |
4054 | comppadlist = newAV(); | |
4055 | AvREAL_off(comppadlist); | |
3280af22 NIS |
4056 | av_store(comppadlist, 0, (SV*)PL_comppad_name); |
4057 | av_store(comppadlist, 1, (SV*)PL_comppad); | |
748a9306 | 4058 | CvPADLIST(cv) = comppadlist; |
3280af22 NIS |
4059 | av_fill(PL_comppad, AvFILLp(protopad)); |
4060 | PL_curpad = AvARRAY(PL_comppad); | |
748a9306 LW |
4061 | |
4062 | av = newAV(); /* will be @_ */ | |
4063 | av_extend(av, 0); | |
3280af22 | 4064 | av_store(PL_comppad, 0, (SV*)av); |
748a9306 LW |
4065 | AvFLAGS(av) = AVf_REIFY; |
4066 | ||
9607fc9c | 4067 | for (ix = fpad; ix > 0; ix--) { |
4068 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; | |
3280af22 | 4069 | if (namesv && namesv != &PL_sv_undef) { |
aa689395 | 4070 | char *name = SvPVX(namesv); /* XXX */ |
4071 | if (SvFLAGS(namesv) & SVf_FAKE) { /* lexical from outside? */ | |
4072 | I32 off = pad_findlex(name, ix, SvIVX(namesv), | |
2680586e | 4073 | CvOUTSIDE(cv), cxstack_ix, 0, 0); |
5f05dabc | 4074 | if (!off) |
3280af22 | 4075 | PL_curpad[ix] = SvREFCNT_inc(ppad[ix]); |
5f05dabc | 4076 | else if (off != ix) |
cea2e8a9 | 4077 | Perl_croak(aTHX_ "panic: cv_clone: %s", name); |
748a9306 LW |
4078 | } |
4079 | else { /* our own lexical */ | |
aa689395 | 4080 | SV* sv; |
5f05dabc | 4081 | if (*name == '&') { |
4082 | /* anon code -- we'll come back for it */ | |
4083 | sv = SvREFCNT_inc(ppad[ix]); | |
4084 | } | |
4085 | else if (*name == '@') | |
4086 | sv = (SV*)newAV(); | |
748a9306 | 4087 | else if (*name == '%') |
5f05dabc | 4088 | sv = (SV*)newHV(); |
748a9306 | 4089 | else |
5f05dabc | 4090 | sv = NEWSV(0,0); |
4091 | if (!SvPADBUSY(sv)) | |
4092 | SvPADMY_on(sv); | |
3280af22 | 4093 | PL_curpad[ix] = sv; |
748a9306 LW |
4094 | } |
4095 | } | |
7766f137 | 4096 | else if (IS_PADGV(ppad[ix]) || IS_PADCONST(ppad[ix])) { |
743e66e6 GS |
4097 | PL_curpad[ix] = SvREFCNT_inc(ppad[ix]); |
4098 | } | |
748a9306 | 4099 | else { |
aa689395 | 4100 | SV* sv = NEWSV(0,0); |
748a9306 | 4101 | SvPADTMP_on(sv); |
3280af22 | 4102 | PL_curpad[ix] = sv; |
748a9306 LW |
4103 | } |
4104 | } | |
4105 | ||
5f05dabc | 4106 | /* Now that vars are all in place, clone nested closures. */ |
4107 | ||
9607fc9c | 4108 | for (ix = fpad; ix > 0; ix--) { |
4109 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; | |
aa689395 | 4110 | if (namesv |
3280af22 | 4111 | && namesv != &PL_sv_undef |
aa689395 | 4112 | && !(SvFLAGS(namesv) & SVf_FAKE) |
4113 | && *SvPVX(namesv) == '&' | |
5f05dabc | 4114 | && CvCLONE(ppad[ix])) |
4115 | { | |
4116 | CV *kid = cv_clone2((CV*)ppad[ix], cv); | |
4117 | SvREFCNT_dec(ppad[ix]); | |
4118 | CvCLONE_on(kid); | |
4119 | SvPADMY_on(kid); | |
3280af22 | 4120 | PL_curpad[ix] = (SV*)kid; |
748a9306 LW |
4121 | } |
4122 | } | |
4123 | ||
5f05dabc | 4124 | #ifdef DEBUG_CLOSURES |
ab50184a CS |
4125 | PerlIO_printf(Perl_debug_log, "Cloned inside:\n"); |
4126 | cv_dump(outside); | |
4127 | PerlIO_printf(Perl_debug_log, " from:\n"); | |
5f05dabc | 4128 | cv_dump(proto); |
ab50184a | 4129 | PerlIO_printf(Perl_debug_log, " to:\n"); |
5f05dabc | 4130 | cv_dump(cv); |
4131 | #endif | |
4132 | ||
748a9306 LW |
4133 | LEAVE; |
4134 | return cv; | |
4135 | } | |
4136 | ||
4137 | CV * | |
864dbfa3 | 4138 | Perl_cv_clone(pTHX_ CV *proto) |
5f05dabc | 4139 | { |
b099ddc0 | 4140 | CV *cv; |
1feb2720 | 4141 | LOCK_CRED_MUTEX; /* XXX create separate mutex */ |
b099ddc0 | 4142 | cv = cv_clone2(proto, CvOUTSIDE(proto)); |
1feb2720 | 4143 | UNLOCK_CRED_MUTEX; /* XXX create separate mutex */ |
b099ddc0 | 4144 | return cv; |
5f05dabc | 4145 | } |
4146 | ||
3fe9a6f1 | 4147 | void |
864dbfa3 | 4148 | Perl_cv_ckproto(pTHX_ CV *cv, GV *gv, char *p) |
3fe9a6f1 | 4149 | { |
0453d815 PM |
4150 | dTHR; |
4151 | ||
f248d071 | 4152 | if (((!p != !SvPOK(cv)) || (p && strNE(p, SvPVX(cv)))) && ckWARN_d(WARN_UNSAFE)) { |
46fc3d4c | 4153 | SV* msg = sv_newmortal(); |
3fe9a6f1 | 4154 | SV* name = Nullsv; |
4155 | ||
4156 | if (gv) | |
46fc3d4c | 4157 | gv_efullname3(name = sv_newmortal(), gv, Nullch); |
4158 | sv_setpv(msg, "Prototype mismatch:"); | |
4159 | if (name) | |
cea2e8a9 | 4160 | Perl_sv_catpvf(aTHX_ msg, " sub %_", name); |
3fe9a6f1 | 4161 | if (SvPOK(cv)) |
cea2e8a9 | 4162 | Perl_sv_catpvf(aTHX_ msg, " (%s)", SvPVX(cv)); |
46fc3d4c | 4163 | sv_catpv(msg, " vs "); |
4164 | if (p) | |
cea2e8a9 | 4165 | Perl_sv_catpvf(aTHX_ msg, "(%s)", p); |
46fc3d4c | 4166 | else |
4167 | sv_catpv(msg, "none"); | |
0453d815 | 4168 | Perl_warner(aTHX_ WARN_UNSAFE, "%_", msg); |
3fe9a6f1 | 4169 | } |
4170 | } | |
4171 | ||
760ac839 | 4172 | SV * |
864dbfa3 | 4173 | Perl_cv_const_sv(pTHX_ CV *cv) |
760ac839 | 4174 | { |
54310121 | 4175 | if (!cv || !SvPOK(cv) || SvCUR(cv)) |
4176 | return Nullsv; | |
fe5e78ed GS |
4177 | return op_const_sv(CvSTART(cv), cv); |
4178 | } | |
760ac839 | 4179 | |
fe5e78ed | 4180 | SV * |
864dbfa3 | 4181 | Perl_op_const_sv(pTHX_ OP *o, CV *cv) |
fe5e78ed GS |
4182 | { |
4183 | SV *sv = Nullsv; | |
4184 | ||
4185 | if(!o) | |
4186 | return Nullsv; | |
4187 | ||
4188 | if(o->op_type == OP_LINESEQ && cLISTOPo->op_first) | |
4189 | o = cLISTOPo->op_first->op_sibling; | |
4190 | ||
4191 | for (; o; o = o->op_next) { | |
54310121 | 4192 | OPCODE type = o->op_type; |
fe5e78ed | 4193 | |
acb36ea4 | 4194 | if (sv && o->op_next == o) |
fe5e78ed | 4195 | return sv; |
54310121 | 4196 | if (type == OP_NEXTSTATE || type == OP_NULL || type == OP_PUSHMARK) |
4197 | continue; | |
4198 | if (type == OP_LEAVESUB || type == OP_RETURN) | |
4199 | break; | |
4200 | if (sv) | |
4201 | return Nullsv; | |
7766f137 | 4202 | if (type == OP_CONST && cSVOPo->op_sv) |
5dc0d613 | 4203 | sv = cSVOPo->op_sv; |
7766f137 | 4204 | else if ((type == OP_PADSV || type == OP_CONST) && cv) { |
e858de61 MB |
4205 | AV* padav = (AV*)(AvARRAY(CvPADLIST(cv))[1]); |
4206 | sv = padav ? AvARRAY(padav)[o->op_targ] : Nullsv; | |
5aabfad6 | 4207 | if (!sv || (!SvREADONLY(sv) && SvREFCNT(sv) > 1)) |
54310121 | 4208 | return Nullsv; |
760ac839 | 4209 | } |
54310121 | 4210 | else |
4211 | return Nullsv; | |
760ac839 | 4212 | } |
5aabfad6 | 4213 | if (sv) |
4214 | SvREADONLY_on(sv); | |
760ac839 LW |
4215 | return sv; |
4216 | } | |
4217 | ||
09bef843 SB |
4218 | void |
4219 | Perl_newMYSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, OP *block) | |
4220 | { | |
4221 | if (o) | |
4222 | SAVEFREEOP(o); | |
4223 | if (proto) | |
4224 | SAVEFREEOP(proto); | |
4225 | if (attrs) | |
4226 | SAVEFREEOP(attrs); | |
4227 | if (block) | |
4228 | SAVEFREEOP(block); | |
4229 | Perl_croak(aTHX_ "\"my sub\" not yet implemented"); | |
4230 | } | |
4231 | ||
748a9306 | 4232 | CV * |
864dbfa3 | 4233 | Perl_newSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *block) |
79072805 | 4234 | { |
09bef843 SB |
4235 | return Perl_newATTRSUB(aTHX_ floor, o, proto, Nullop, block); |
4236 | } | |
4237 | ||
4238 | CV * | |
4239 | Perl_newATTRSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, OP *block) | |
4240 | { | |
11343788 | 4241 | dTHR; |
2d8e6c8d GS |
4242 | STRLEN n_a; |
4243 | char *name = o ? SvPVx(cSVOPo->op_sv, n_a) : Nullch; | |
55d729e4 | 4244 | GV *gv = gv_fetchpv(name ? name : "__ANON__", |
09bef843 SB |
4245 | GV_ADDMULTI | ((block || attrs) ? 0 : GV_NOINIT), |
4246 | SVt_PVCV); | |
2d8e6c8d | 4247 | char *ps = proto ? SvPVx(((SVOP*)proto)->op_sv, n_a) : Nullch; |
a2008d6d | 4248 | register CV *cv=0; |
a0d0e21e | 4249 | I32 ix; |
79072805 | 4250 | |
11343788 | 4251 | if (o) |
5dc0d613 | 4252 | SAVEFREEOP(o); |
3fe9a6f1 | 4253 | if (proto) |
4254 | SAVEFREEOP(proto); | |
09bef843 SB |
4255 | if (attrs) |
4256 | SAVEFREEOP(attrs); | |
3fe9a6f1 | 4257 | |
09bef843 | 4258 | if (SvTYPE(gv) != SVt_PVGV) { /* Maybe prototype now, and had at |
55d729e4 GS |
4259 | maximum a prototype before. */ |
4260 | if (SvTYPE(gv) > SVt_NULL) { | |
0453d815 | 4261 | if (!SvPOK((SV*)gv) && !(SvIOK((SV*)gv) && SvIVX((SV*)gv) == -1) |
f248d071 GS |
4262 | && ckWARN_d(WARN_UNSAFE)) |
4263 | { | |
0453d815 | 4264 | Perl_warner(aTHX_ WARN_UNSAFE, "Runaway prototype"); |
f248d071 | 4265 | } |
55d729e4 GS |
4266 | cv_ckproto((CV*)gv, NULL, ps); |
4267 | } | |
4268 | if (ps) | |
4269 | sv_setpv((SV*)gv, ps); | |
4270 | else | |
4271 | sv_setiv((SV*)gv, -1); | |
3280af22 NIS |
4272 | SvREFCNT_dec(PL_compcv); |
4273 | cv = PL_compcv = NULL; | |
4274 | PL_sub_generation++; | |
55d729e4 GS |
4275 | goto noblock; |
4276 | } | |
4277 | ||
68dc0745 | 4278 | if (!name || GvCVGEN(gv)) |
4279 | cv = Nullcv; | |
4280 | else if (cv = GvCV(gv)) { | |
3fe9a6f1 | 4281 | cv_ckproto(cv, gv, ps); |
68dc0745 | 4282 | /* already defined (or promised)? */ |
4283 | if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
4284 | SV* const_sv; | |
fe5e78ed | 4285 | bool const_changed = TRUE; |
09bef843 | 4286 | if (!block && !attrs) { |
aa689395 | 4287 | /* just a "sub foo;" when &foo is already defined */ |
3280af22 | 4288 | SAVEFREESV(PL_compcv); |
aa689395 | 4289 | goto done; |
4290 | } | |
7bac28a0 | 4291 | /* ahem, death to those who redefine active sort subs */ |
3280af22 | 4292 | if (PL_curstackinfo->si_type == PERLSI_SORT && PL_sortcop == CvSTART(cv)) |
cea2e8a9 | 4293 | Perl_croak(aTHX_ "Can't redefine active sort subroutine %s", name); |
09bef843 SB |
4294 | if (!block) |
4295 | goto withattrs; | |
fe5e78ed GS |
4296 | if(const_sv = cv_const_sv(cv)) |
4297 | const_changed = sv_cmp(const_sv, op_const_sv(block, Nullcv)); | |
599cee73 PM |
4298 | if ((const_sv && const_changed) || ckWARN(WARN_REDEFINE) |
4299 | && !(CvGV(cv) && GvSTASH(CvGV(cv)) | |
2f34f9d4 IZ |
4300 | && HvNAME(GvSTASH(CvGV(cv))) |
4301 | && strEQ(HvNAME(GvSTASH(CvGV(cv))), | |
4302 | "autouse"))) { | |
57843af0 GS |
4303 | line_t oldline = CopLINE(PL_curcop); |
4304 | CopLINE_set(PL_curcop, PL_copline); | |
cea2e8a9 | 4305 | Perl_warner(aTHX_ WARN_REDEFINE, |
599cee73 | 4306 | const_sv ? "Constant subroutine %s redefined" |
09bef843 | 4307 | : "Subroutine %s redefined", name); |
57843af0 | 4308 | CopLINE_set(PL_curcop, oldline); |
79072805 | 4309 | } |
8990e307 | 4310 | SvREFCNT_dec(cv); |
68dc0745 | 4311 | cv = Nullcv; |
79072805 LW |
4312 | } |
4313 | } | |
09bef843 SB |
4314 | withattrs: |
4315 | if (attrs) { | |
4316 | HV *stash; | |
4317 | SV *rcv; | |
4318 | ||
4319 | /* Need to do a C<use attributes $stash_of_cv,\&cv,@attrs> | |
4320 | * before we clobber PL_compcv. | |
4321 | */ | |
4322 | if (cv && !block) { | |
4323 | rcv = (SV*)cv; | |
4324 | if (CvGV(cv) && GvSTASH(CvGV(cv)) && HvNAME(GvSTASH(CvGV(cv)))) | |
4325 | stash = GvSTASH(CvGV(cv)); | |
4326 | else if (CvSTASH(cv) && HvNAME(CvSTASH(cv))) | |
4327 | stash = CvSTASH(cv); | |
4328 | else | |
4329 | stash = PL_curstash; | |
4330 | } | |
4331 | else { | |
4332 | /* possibly about to re-define existing subr -- ignore old cv */ | |
4333 | rcv = (SV*)PL_compcv; | |
4334 | if (name && GvSTASH(gv) && HvNAME(GvSTASH(gv))) | |
4335 | stash = GvSTASH(gv); | |
4336 | else | |
4337 | stash = PL_curstash; | |
4338 | } | |
4339 | apply_attrs(stash, rcv, attrs); | |
4340 | } | |
a0d0e21e | 4341 | if (cv) { /* must reuse cv if autoloaded */ |
09bef843 SB |
4342 | if (!block) { |
4343 | /* got here with just attrs -- work done, so bug out */ | |
4344 | SAVEFREESV(PL_compcv); | |
4345 | goto done; | |
4346 | } | |
4633a7c4 | 4347 | cv_undef(cv); |
3280af22 NIS |
4348 | CvFLAGS(cv) = CvFLAGS(PL_compcv); |
4349 | CvOUTSIDE(cv) = CvOUTSIDE(PL_compcv); | |
4350 | CvOUTSIDE(PL_compcv) = 0; | |
4351 | CvPADLIST(cv) = CvPADLIST(PL_compcv); | |
4352 | CvPADLIST(PL_compcv) = 0; | |
4353 | if (SvREFCNT(PL_compcv) > 1) /* XXX Make closures transit through stub. */ | |
4354 | CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc((SV*)cv); | |
4355 | SvREFCNT_dec(PL_compcv); | |
a0d0e21e LW |
4356 | } |
4357 | else { | |
3280af22 | 4358 | cv = PL_compcv; |
44a8e56a | 4359 | if (name) { |
4360 | GvCV(gv) = cv; | |
4361 | GvCVGEN(gv) = 0; | |
3280af22 | 4362 | PL_sub_generation++; |
44a8e56a | 4363 | } |
a0d0e21e | 4364 | } |
44a8e56a | 4365 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
57843af0 | 4366 | CvFILE(cv) = CopFILE(PL_curcop); |
3280af22 | 4367 | CvSTASH(cv) = PL_curstash; |
11343788 MB |
4368 | #ifdef USE_THREADS |
4369 | CvOWNER(cv) = 0; | |
1cfa4ec7 | 4370 | if (!CvMUTEXP(cv)) { |
f6aaf501 | 4371 | New(666, CvMUTEXP(cv), 1, perl_mutex); |
1cfa4ec7 GS |
4372 | MUTEX_INIT(CvMUTEXP(cv)); |
4373 | } | |
11343788 | 4374 | #endif /* USE_THREADS */ |
8990e307 | 4375 | |
3fe9a6f1 | 4376 | if (ps) |
4377 | sv_setpv((SV*)cv, ps); | |
4633a7c4 | 4378 | |
3280af22 | 4379 | if (PL_error_count) { |
c07a80fd | 4380 | op_free(block); |
4381 | block = Nullop; | |
68dc0745 | 4382 | if (name) { |
4383 | char *s = strrchr(name, ':'); | |
4384 | s = s ? s+1 : name; | |
6d4c2119 CS |
4385 | if (strEQ(s, "BEGIN")) { |
4386 | char *not_safe = | |
4387 | "BEGIN not safe after errors--compilation aborted"; | |
faef0170 | 4388 | if (PL_in_eval & EVAL_KEEPERR) |
cea2e8a9 | 4389 | Perl_croak(aTHX_ not_safe); |
6d4c2119 CS |
4390 | else { |
4391 | /* force display of errors found but not reported */ | |
38a03e6e | 4392 | sv_catpv(ERRSV, not_safe); |
cea2e8a9 | 4393 | Perl_croak(aTHX_ "%s", SvPVx(ERRSV, n_a)); |
6d4c2119 CS |
4394 | } |
4395 | } | |
68dc0745 | 4396 | } |
c07a80fd | 4397 | } |
a0d0e21e | 4398 | if (!block) { |
55d729e4 | 4399 | noblock: |
3280af22 | 4400 | PL_copline = NOLINE; |
a0d0e21e LW |
4401 | LEAVE_SCOPE(floor); |
4402 | return cv; | |
4403 | } | |
4404 | ||
3280af22 NIS |
4405 | if (AvFILLp(PL_comppad_name) < AvFILLp(PL_comppad)) |
4406 | av_store(PL_comppad_name, AvFILLp(PL_comppad), Nullsv); | |
a0d0e21e | 4407 | |
7766f137 GS |
4408 | if (CvLVALUE(cv)) { |
4409 | CvROOT(cv) = newUNOP(OP_LEAVESUBLV, 0, scalarseq(block)); | |
4410 | } | |
4411 | else { | |
4412 | CvROOT(cv) = newUNOP(OP_LEAVESUB, 0, scalarseq(block)); | |
4413 | } | |
4414 | CvROOT(cv)->op_private |= OPpREFCOUNTED; | |
4415 | OpREFCNT_set(CvROOT(cv), 1); | |
4416 | CvSTART(cv) = LINKLIST(CvROOT(cv)); | |
4417 | CvROOT(cv)->op_next = 0; | |
4418 | peep(CvSTART(cv)); | |
4419 | ||
4420 | /* now that optimizer has done its work, adjust pad values */ | |
54310121 | 4421 | if (CvCLONE(cv)) { |
3280af22 NIS |
4422 | SV **namep = AvARRAY(PL_comppad_name); |
4423 | for (ix = AvFILLp(PL_comppad); ix > 0; ix--) { | |
54310121 | 4424 | SV *namesv; |
4425 | ||
7766f137 | 4426 | if (SvIMMORTAL(PL_curpad[ix]) || IS_PADGV(PL_curpad[ix]) || IS_PADCONST(PL_curpad[ix])) |
54310121 | 4427 | continue; |
4428 | /* | |
4429 | * The only things that a clonable function needs in its | |
4430 | * pad are references to outer lexicals and anonymous subs. | |
4431 | * The rest are created anew during cloning. | |
4432 | */ | |
4433 | if (!((namesv = namep[ix]) != Nullsv && | |
3280af22 | 4434 | namesv != &PL_sv_undef && |
54310121 | 4435 | (SvFAKE(namesv) || |
4436 | *SvPVX(namesv) == '&'))) | |
4437 | { | |
3280af22 NIS |
4438 | SvREFCNT_dec(PL_curpad[ix]); |
4439 | PL_curpad[ix] = Nullsv; | |
54310121 | 4440 | } |
4441 | } | |
a0d0e21e | 4442 | } |
54310121 | 4443 | else { |
4444 | AV *av = newAV(); /* Will be @_ */ | |
4445 | av_extend(av, 0); | |
3280af22 | 4446 | av_store(PL_comppad, 0, (SV*)av); |
54310121 | 4447 | AvFLAGS(av) = AVf_REIFY; |
79072805 | 4448 | |
3280af22 | 4449 | for (ix = AvFILLp(PL_comppad); ix > 0; ix--) { |
7766f137 | 4450 | if (SvIMMORTAL(PL_curpad[ix]) || IS_PADGV(PL_curpad[ix]) || IS_PADCONST(PL_curpad[ix])) |
54310121 | 4451 | continue; |
3280af22 NIS |
4452 | if (!SvPADMY(PL_curpad[ix])) |
4453 | SvPADTMP_on(PL_curpad[ix]); | |
54310121 | 4454 | } |
4455 | } | |
79072805 | 4456 | |
44a8e56a | 4457 | if (name) { |
4458 | char *s; | |
4459 | ||
3280af22 | 4460 | if (PERLDB_SUBLINE && PL_curstash != PL_debstash) { |
46fc3d4c | 4461 | SV *sv = NEWSV(0,0); |
44a8e56a | 4462 | SV *tmpstr = sv_newmortal(); |
549bb64a | 4463 | GV *db_postponed = gv_fetchpv("DB::postponed", GV_ADDMULTI, SVt_PVHV); |
44a8e56a | 4464 | CV *cv; |
4465 | HV *hv; | |
4466 | ||
ed094faf GS |
4467 | Perl_sv_setpvf(aTHX_ sv, "%s:%ld-%ld", |
4468 | CopFILE(PL_curcop), | |
cc49e20b | 4469 | (long)PL_subline, (long)CopLINE(PL_curcop)); |
44a8e56a | 4470 | gv_efullname3(tmpstr, gv, Nullch); |
3280af22 | 4471 | hv_store(GvHV(PL_DBsub), SvPVX(tmpstr), SvCUR(tmpstr), sv, 0); |
44a8e56a | 4472 | hv = GvHVn(db_postponed); |
9607fc9c | 4473 | if (HvFILL(hv) > 0 && hv_exists(hv, SvPVX(tmpstr), SvCUR(tmpstr)) |
4474 | && (cv = GvCV(db_postponed))) { | |
44a8e56a | 4475 | dSP; |
924508f0 | 4476 | PUSHMARK(SP); |
44a8e56a | 4477 | XPUSHs(tmpstr); |
4478 | PUTBACK; | |
864dbfa3 | 4479 | call_sv((SV*)cv, G_DISCARD); |
44a8e56a | 4480 | } |
4481 | } | |
79072805 | 4482 | |
44a8e56a | 4483 | if ((s = strrchr(name,':'))) |
28757baa | 4484 | s++; |
4485 | else | |
4486 | s = name; | |
ed094faf GS |
4487 | |
4488 | if (*s != 'B' && *s != 'E' && *s != 'S' && *s != 'I') | |
4489 | goto done; | |
4490 | ||
68dc0745 | 4491 | if (strEQ(s, "BEGIN")) { |
3280af22 | 4492 | I32 oldscope = PL_scopestack_ix; |
28757baa | 4493 | ENTER; |
57843af0 GS |
4494 | SAVECOPFILE(&PL_compiling); |
4495 | SAVECOPLINE(&PL_compiling); | |
3280af22 NIS |
4496 | save_svref(&PL_rs); |
4497 | sv_setsv(PL_rs, PL_nrs); | |
28757baa | 4498 | |
3280af22 NIS |
4499 | if (!PL_beginav) |
4500 | PL_beginav = newAV(); | |
28757baa | 4501 | DEBUG_x( dump_sub(gv) ); |
ed094faf | 4502 | av_push(PL_beginav, SvREFCNT_inc(cv)); |
28757baa | 4503 | GvCV(gv) = 0; |
3280af22 | 4504 | call_list(oldscope, PL_beginav); |
a6006777 | 4505 | |
3280af22 | 4506 | PL_curcop = &PL_compiling; |
a0ed51b3 | 4507 | PL_compiling.op_private = PL_hints; |
28757baa | 4508 | LEAVE; |
4509 | } | |
3280af22 NIS |
4510 | else if (strEQ(s, "END") && !PL_error_count) { |
4511 | if (!PL_endav) | |
4512 | PL_endav = newAV(); | |
ed094faf | 4513 | DEBUG_x( dump_sub(gv) ); |
3280af22 | 4514 | av_unshift(PL_endav, 1); |
ed094faf | 4515 | av_store(PL_endav, 0, SvREFCNT_inc(cv)); |
28757baa | 4516 | GvCV(gv) = 0; |
4517 | } | |
4f25aa18 GS |
4518 | else if (strEQ(s, "STOP") && !PL_error_count) { |
4519 | if (!PL_stopav) | |
4520 | PL_stopav = newAV(); | |
ed094faf | 4521 | DEBUG_x( dump_sub(gv) ); |
4f25aa18 | 4522 | av_unshift(PL_stopav, 1); |
ed094faf | 4523 | av_store(PL_stopav, 0, SvREFCNT_inc(cv)); |
4f25aa18 GS |
4524 | GvCV(gv) = 0; |
4525 | } | |
3280af22 NIS |
4526 | else if (strEQ(s, "INIT") && !PL_error_count) { |
4527 | if (!PL_initav) | |
4528 | PL_initav = newAV(); | |
ed094faf | 4529 | DEBUG_x( dump_sub(gv) ); |
3280af22 | 4530 | av_push(PL_initav, SvREFCNT_inc(cv)); |
b7aad4fe | 4531 | GvCV(gv) = 0; |
ae77835f | 4532 | } |
79072805 | 4533 | } |
a6006777 | 4534 | |
aa689395 | 4535 | done: |
3280af22 | 4536 | PL_copline = NOLINE; |
8990e307 | 4537 | LEAVE_SCOPE(floor); |
a0d0e21e | 4538 | return cv; |
79072805 LW |
4539 | } |
4540 | ||
b099ddc0 | 4541 | /* XXX unsafe for threads if eval_owner isn't held */ |
5476c433 | 4542 | void |
864dbfa3 | 4543 | Perl_newCONSTSUB(pTHX_ HV *stash, char *name, SV *sv) |
5476c433 JD |
4544 | { |
4545 | dTHR; | |
5476c433 | 4546 | |
11faa288 GS |
4547 | ENTER; |
4548 | SAVECOPLINE(PL_curcop); | |
4549 | SAVEHINTS(); | |
4550 | ||
4551 | CopLINE_set(PL_curcop, PL_copline); | |
3280af22 | 4552 | PL_hints &= ~HINT_BLOCK_SCOPE; |
11faa288 GS |
4553 | |
4554 | if (stash) { | |
4555 | SAVESPTR(PL_curstash); | |
4556 | SAVECOPSTASH(PL_curcop); | |
4557 | PL_curstash = stash; | |
4558 | #ifdef USE_ITHREADS | |
4559 | CopSTASHPV(PL_curcop) = stash ? HvNAME(stash) : Nullch; | |
4560 | #else | |
4561 | CopSTASH(PL_curcop) = stash; | |
4562 | #endif | |
4563 | } | |
5476c433 | 4564 | |
09bef843 | 4565 | newATTRSUB( |
be24f278 | 4566 | start_subparse(FALSE, 0), |
5476c433 | 4567 | newSVOP(OP_CONST, 0, newSVpv(name,0)), |
6b88bc9c | 4568 | newSVOP(OP_CONST, 0, &PL_sv_no), /* SvPV(&PL_sv_no) == "" -- GMB */ |
09bef843 | 4569 | Nullop, |
5476c433 JD |
4570 | newSTATEOP(0, Nullch, newSVOP(OP_CONST, 0, sv)) |
4571 | ); | |
4572 | ||
11faa288 | 4573 | LEAVE; |
5476c433 JD |
4574 | } |
4575 | ||
57d3b86d | 4576 | CV * |
864dbfa3 | 4577 | Perl_newXS(pTHX_ char *name, XSUBADDR_t subaddr, char *filename) |
a0d0e21e | 4578 | { |
11343788 | 4579 | dTHR; |
44a8e56a | 4580 | GV *gv = gv_fetchpv(name ? name : "__ANON__", GV_ADDMULTI, SVt_PVCV); |
79072805 | 4581 | register CV *cv; |
44a8e56a | 4582 | |
4583 | if (cv = (name ? GvCV(gv) : Nullcv)) { | |
4584 | if (GvCVGEN(gv)) { | |
4585 | /* just a cached method */ | |
4586 | SvREFCNT_dec(cv); | |
4587 | cv = 0; | |
4588 | } | |
4589 | else if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
4590 | /* already defined (or promised) */ | |
599cee73 | 4591 | if (ckWARN(WARN_REDEFINE) && !(CvGV(cv) && GvSTASH(CvGV(cv)) |
2f34f9d4 IZ |
4592 | && HvNAME(GvSTASH(CvGV(cv))) |
4593 | && strEQ(HvNAME(GvSTASH(CvGV(cv))), "autouse"))) { | |
57843af0 | 4594 | line_t oldline = CopLINE(PL_curcop); |
51f6edd3 | 4595 | if (PL_copline != NOLINE) |
57843af0 | 4596 | CopLINE_set(PL_curcop, PL_copline); |
cea2e8a9 | 4597 | Perl_warner(aTHX_ WARN_REDEFINE, "Subroutine %s redefined",name); |
57843af0 | 4598 | CopLINE_set(PL_curcop, oldline); |
a0d0e21e LW |
4599 | } |
4600 | SvREFCNT_dec(cv); | |
4601 | cv = 0; | |
79072805 | 4602 | } |
79072805 | 4603 | } |
44a8e56a | 4604 | |
4605 | if (cv) /* must reuse cv if autoloaded */ | |
4606 | cv_undef(cv); | |
a0d0e21e LW |
4607 | else { |
4608 | cv = (CV*)NEWSV(1105,0); | |
4609 | sv_upgrade((SV *)cv, SVt_PVCV); | |
44a8e56a | 4610 | if (name) { |
4611 | GvCV(gv) = cv; | |
4612 | GvCVGEN(gv) = 0; | |
3280af22 | 4613 | PL_sub_generation++; |
44a8e56a | 4614 | } |
a0d0e21e | 4615 | } |
5196be3e | 4616 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
11343788 | 4617 | #ifdef USE_THREADS |
12ca11f6 | 4618 | New(666, CvMUTEXP(cv), 1, perl_mutex); |
11343788 | 4619 | MUTEX_INIT(CvMUTEXP(cv)); |
11343788 MB |
4620 | CvOWNER(cv) = 0; |
4621 | #endif /* USE_THREADS */ | |
b195d487 | 4622 | (void)gv_fetchfile(filename); |
57843af0 GS |
4623 | CvFILE(cv) = filename; /* NOTE: not copied, as it is expected to be |
4624 | an external constant string */ | |
a0d0e21e | 4625 | CvXSUB(cv) = subaddr; |
44a8e56a | 4626 | |
28757baa | 4627 | if (name) { |
4628 | char *s = strrchr(name,':'); | |
4629 | if (s) | |
4630 | s++; | |
4631 | else | |
4632 | s = name; | |
ed094faf GS |
4633 | |
4634 | if (*s != 'B' && *s != 'E' && *s != 'S' && *s != 'I') | |
4635 | goto done; | |
4636 | ||
28757baa | 4637 | if (strEQ(s, "BEGIN")) { |
3280af22 NIS |
4638 | if (!PL_beginav) |
4639 | PL_beginav = newAV(); | |
ed094faf | 4640 | av_push(PL_beginav, SvREFCNT_inc(cv)); |
44a8e56a | 4641 | GvCV(gv) = 0; |
28757baa | 4642 | } |
4643 | else if (strEQ(s, "END")) { | |
3280af22 NIS |
4644 | if (!PL_endav) |
4645 | PL_endav = newAV(); | |
4646 | av_unshift(PL_endav, 1); | |
ed094faf | 4647 | av_store(PL_endav, 0, SvREFCNT_inc(cv)); |
44a8e56a | 4648 | GvCV(gv) = 0; |
28757baa | 4649 | } |
4f25aa18 GS |
4650 | else if (strEQ(s, "STOP")) { |
4651 | if (!PL_stopav) | |
4652 | PL_stopav = newAV(); | |
4653 | av_unshift(PL_stopav, 1); | |
ed094faf | 4654 | av_store(PL_stopav, 0, SvREFCNT_inc(cv)); |
4f25aa18 GS |
4655 | GvCV(gv) = 0; |
4656 | } | |
7d07dbc2 | 4657 | else if (strEQ(s, "INIT")) { |
3280af22 NIS |
4658 | if (!PL_initav) |
4659 | PL_initav = newAV(); | |
ed094faf | 4660 | av_push(PL_initav, SvREFCNT_inc(cv)); |
f8f842e4 | 4661 | GvCV(gv) = 0; |
ae77835f | 4662 | } |
28757baa | 4663 | } |
8990e307 | 4664 | else |
a5f75d66 | 4665 | CvANON_on(cv); |
44a8e56a | 4666 | |
ed094faf | 4667 | done: |
a0d0e21e | 4668 | return cv; |
79072805 LW |
4669 | } |
4670 | ||
4671 | void | |
864dbfa3 | 4672 | Perl_newFORM(pTHX_ I32 floor, OP *o, OP *block) |
79072805 | 4673 | { |
11343788 | 4674 | dTHR; |
79072805 LW |
4675 | register CV *cv; |
4676 | char *name; | |
4677 | GV *gv; | |
a0d0e21e | 4678 | I32 ix; |
2d8e6c8d | 4679 | STRLEN n_a; |
79072805 | 4680 | |
11343788 | 4681 | if (o) |
2d8e6c8d | 4682 | name = SvPVx(cSVOPo->op_sv, n_a); |
79072805 LW |
4683 | else |
4684 | name = "STDOUT"; | |
85e6fe83 | 4685 | gv = gv_fetchpv(name,TRUE, SVt_PVFM); |
a5f75d66 | 4686 | GvMULTI_on(gv); |
79072805 | 4687 | if (cv = GvFORM(gv)) { |
599cee73 | 4688 | if (ckWARN(WARN_REDEFINE)) { |
57843af0 | 4689 | line_t oldline = CopLINE(PL_curcop); |
79072805 | 4690 | |
57843af0 | 4691 | CopLINE_set(PL_curcop, PL_copline); |
cea2e8a9 | 4692 | Perl_warner(aTHX_ WARN_REDEFINE, "Format %s redefined",name); |
57843af0 | 4693 | CopLINE_set(PL_curcop, oldline); |
79072805 | 4694 | } |
8990e307 | 4695 | SvREFCNT_dec(cv); |
79072805 | 4696 | } |
3280af22 | 4697 | cv = PL_compcv; |
79072805 | 4698 | GvFORM(gv) = cv; |
44a8e56a | 4699 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
57843af0 | 4700 | CvFILE(cv) = CopFILE(PL_curcop); |
79072805 | 4701 | |
3280af22 NIS |
4702 | for (ix = AvFILLp(PL_comppad); ix > 0; ix--) { |
4703 | if (!SvPADMY(PL_curpad[ix]) && !SvIMMORTAL(PL_curpad[ix])) | |
4704 | SvPADTMP_on(PL_curpad[ix]); | |
a0d0e21e LW |
4705 | } |
4706 | ||
79072805 | 4707 | CvROOT(cv) = newUNOP(OP_LEAVEWRITE, 0, scalarseq(block)); |
7934575e GS |
4708 | CvROOT(cv)->op_private |= OPpREFCOUNTED; |
4709 | OpREFCNT_set(CvROOT(cv), 1); | |
79072805 LW |
4710 | CvSTART(cv) = LINKLIST(CvROOT(cv)); |
4711 | CvROOT(cv)->op_next = 0; | |
4712 | peep(CvSTART(cv)); | |
11343788 | 4713 | op_free(o); |
3280af22 | 4714 | PL_copline = NOLINE; |
8990e307 | 4715 | LEAVE_SCOPE(floor); |
79072805 LW |
4716 | } |
4717 | ||
4718 | OP * | |
864dbfa3 | 4719 | Perl_newANONLIST(pTHX_ OP *o) |
79072805 | 4720 | { |
93a17b20 | 4721 | return newUNOP(OP_REFGEN, 0, |
11343788 | 4722 | mod(list(convert(OP_ANONLIST, 0, o)), OP_REFGEN)); |
79072805 LW |
4723 | } |
4724 | ||
4725 | OP * | |
864dbfa3 | 4726 | Perl_newANONHASH(pTHX_ OP *o) |
79072805 | 4727 | { |
93a17b20 | 4728 | return newUNOP(OP_REFGEN, 0, |
11343788 | 4729 | mod(list(convert(OP_ANONHASH, 0, o)), OP_REFGEN)); |
a0d0e21e LW |
4730 | } |
4731 | ||
4732 | OP * | |
864dbfa3 | 4733 | Perl_newANONSUB(pTHX_ I32 floor, OP *proto, OP *block) |
a0d0e21e | 4734 | { |
09bef843 SB |
4735 | return newANONATTRSUB(floor, proto, Nullop, block); |
4736 | } | |
4737 | ||
4738 | OP * | |
4739 | Perl_newANONATTRSUB(pTHX_ I32 floor, OP *proto, OP *attrs, OP *block) | |
4740 | { | |
a0d0e21e | 4741 | return newUNOP(OP_REFGEN, 0, |
09bef843 SB |
4742 | newSVOP(OP_ANONCODE, 0, |
4743 | (SV*)newATTRSUB(floor, 0, proto, attrs, block))); | |
79072805 LW |
4744 | } |
4745 | ||
4746 | OP * | |
864dbfa3 | 4747 | Perl_oopsAV(pTHX_ OP *o) |
79072805 | 4748 | { |
ed6116ce LW |
4749 | switch (o->op_type) { |
4750 | case OP_PADSV: | |
4751 | o->op_type = OP_PADAV; | |
22c35a8c | 4752 | o->op_ppaddr = PL_ppaddr[OP_PADAV]; |
51e247a3 | 4753 | return ref(o, OP_RV2AV); |
ed6116ce LW |
4754 | |
4755 | case OP_RV2SV: | |
79072805 | 4756 | o->op_type = OP_RV2AV; |
22c35a8c | 4757 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
79072805 | 4758 | ref(o, OP_RV2AV); |
ed6116ce LW |
4759 | break; |
4760 | ||
4761 | default: | |
0453d815 PM |
4762 | if (ckWARN_d(WARN_INTERNAL)) |
4763 | Perl_warner(aTHX_ WARN_INTERNAL, "oops: oopsAV"); | |
ed6116ce LW |
4764 | break; |
4765 | } | |
79072805 LW |
4766 | return o; |
4767 | } | |
4768 | ||
4769 | OP * | |
864dbfa3 | 4770 | Perl_oopsHV(pTHX_ OP *o) |
79072805 | 4771 | { |
0453d815 | 4772 | dTHR; |
0453d815 | 4773 | |
ed6116ce LW |
4774 | switch (o->op_type) { |
4775 | case OP_PADSV: | |
4776 | case OP_PADAV: | |
4777 | o->op_type = OP_PADHV; | |
22c35a8c | 4778 | o->op_ppaddr = PL_ppaddr[OP_PADHV]; |
51e247a3 | 4779 | return ref(o, OP_RV2HV); |
ed6116ce LW |
4780 | |
4781 | case OP_RV2SV: | |
4782 | case OP_RV2AV: | |
79072805 | 4783 | o->op_type = OP_RV2HV; |
22c35a8c | 4784 | o->op_ppaddr = PL_ppaddr[OP_RV2HV]; |
79072805 | 4785 | ref(o, OP_RV2HV); |
ed6116ce LW |
4786 | break; |
4787 | ||
4788 | default: | |
0453d815 PM |
4789 | if (ckWARN_d(WARN_INTERNAL)) |
4790 | Perl_warner(aTHX_ WARN_INTERNAL, "oops: oopsHV"); | |
ed6116ce LW |
4791 | break; |
4792 | } | |
79072805 LW |
4793 | return o; |
4794 | } | |
4795 | ||
4796 | OP * | |
864dbfa3 | 4797 | Perl_newAVREF(pTHX_ OP *o) |
79072805 | 4798 | { |
ed6116ce LW |
4799 | if (o->op_type == OP_PADANY) { |
4800 | o->op_type = OP_PADAV; | |
22c35a8c | 4801 | o->op_ppaddr = PL_ppaddr[OP_PADAV]; |
93a17b20 | 4802 | return o; |
ed6116ce | 4803 | } |
79072805 LW |
4804 | return newUNOP(OP_RV2AV, 0, scalar(o)); |
4805 | } | |
4806 | ||
4807 | OP * | |
864dbfa3 | 4808 | Perl_newGVREF(pTHX_ I32 type, OP *o) |
79072805 | 4809 | { |
82092f1d | 4810 | if (type == OP_MAPSTART || type == OP_GREPSTART || type == OP_SORT) |
a0d0e21e | 4811 | return newUNOP(OP_NULL, 0, o); |
748a9306 | 4812 | return ref(newUNOP(OP_RV2GV, OPf_REF, o), type); |
79072805 LW |
4813 | } |
4814 | ||
4815 | OP * | |
864dbfa3 | 4816 | Perl_newHVREF(pTHX_ OP *o) |
79072805 | 4817 | { |
ed6116ce LW |
4818 | if (o->op_type == OP_PADANY) { |
4819 | o->op_type = OP_PADHV; | |
22c35a8c | 4820 | o->op_ppaddr = PL_ppaddr[OP_PADHV]; |
93a17b20 | 4821 | return o; |
ed6116ce | 4822 | } |
79072805 LW |
4823 | return newUNOP(OP_RV2HV, 0, scalar(o)); |
4824 | } | |
4825 | ||
4826 | OP * | |
864dbfa3 | 4827 | Perl_oopsCV(pTHX_ OP *o) |
79072805 | 4828 | { |
cea2e8a9 | 4829 | Perl_croak(aTHX_ "NOT IMPL LINE %d",__LINE__); |
79072805 LW |
4830 | /* STUB */ |
4831 | return o; | |
4832 | } | |
4833 | ||
4834 | OP * | |
864dbfa3 | 4835 | Perl_newCVREF(pTHX_ I32 flags, OP *o) |
79072805 | 4836 | { |
c07a80fd | 4837 | return newUNOP(OP_RV2CV, flags, scalar(o)); |
79072805 LW |
4838 | } |
4839 | ||
4840 | OP * | |
864dbfa3 | 4841 | Perl_newSVREF(pTHX_ OP *o) |
79072805 | 4842 | { |
ed6116ce LW |
4843 | if (o->op_type == OP_PADANY) { |
4844 | o->op_type = OP_PADSV; | |
22c35a8c | 4845 | o->op_ppaddr = PL_ppaddr[OP_PADSV]; |
93a17b20 | 4846 | return o; |
ed6116ce | 4847 | } |
224a4551 MB |
4848 | else if (o->op_type == OP_THREADSV && !(o->op_flags & OPpDONE_SVREF)) { |
4849 | o->op_flags |= OPpDONE_SVREF; | |
a863c7d1 | 4850 | return o; |
224a4551 | 4851 | } |
79072805 LW |
4852 | return newUNOP(OP_RV2SV, 0, scalar(o)); |
4853 | } | |
4854 | ||
4855 | /* Check routines. */ | |
4856 | ||
4857 | OP * | |
cea2e8a9 | 4858 | Perl_ck_anoncode(pTHX_ OP *o) |
5f05dabc | 4859 | { |
178c6305 CS |
4860 | PADOFFSET ix; |
4861 | SV* name; | |
4862 | ||
4863 | name = NEWSV(1106,0); | |
4864 | sv_upgrade(name, SVt_PVNV); | |
4865 | sv_setpvn(name, "&", 1); | |
4866 | SvIVX(name) = -1; | |
4867 | SvNVX(name) = 1; | |
5dc0d613 | 4868 | ix = pad_alloc(o->op_type, SVs_PADMY); |
3280af22 NIS |
4869 | av_store(PL_comppad_name, ix, name); |
4870 | av_store(PL_comppad, ix, cSVOPo->op_sv); | |
5dc0d613 MB |
4871 | SvPADMY_on(cSVOPo->op_sv); |
4872 | cSVOPo->op_sv = Nullsv; | |
4873 | cSVOPo->op_targ = ix; | |
4874 | return o; | |
5f05dabc | 4875 | } |
4876 | ||
4877 | OP * | |
cea2e8a9 | 4878 | Perl_ck_bitop(pTHX_ OP *o) |
55497cff | 4879 | { |
3280af22 | 4880 | o->op_private = PL_hints; |
5dc0d613 | 4881 | return o; |
55497cff | 4882 | } |
4883 | ||
4884 | OP * | |
cea2e8a9 | 4885 | Perl_ck_concat(pTHX_ OP *o) |
79072805 | 4886 | { |
11343788 MB |
4887 | if (cUNOPo->op_first->op_type == OP_CONCAT) |
4888 | o->op_flags |= OPf_STACKED; | |
4889 | return o; | |
79072805 LW |
4890 | } |
4891 | ||
4892 | OP * | |
cea2e8a9 | 4893 | Perl_ck_spair(pTHX_ OP *o) |
79072805 | 4894 | { |
11343788 | 4895 | if (o->op_flags & OPf_KIDS) { |
79072805 | 4896 | OP* newop; |
a0d0e21e | 4897 | OP* kid; |
5dc0d613 MB |
4898 | OPCODE type = o->op_type; |
4899 | o = modkids(ck_fun(o), type); | |
11343788 | 4900 | kid = cUNOPo->op_first; |
a0d0e21e LW |
4901 | newop = kUNOP->op_first->op_sibling; |
4902 | if (newop && | |
4903 | (newop->op_sibling || | |
22c35a8c | 4904 | !(PL_opargs[newop->op_type] & OA_RETSCALAR) || |
a0d0e21e LW |
4905 | newop->op_type == OP_PADAV || newop->op_type == OP_PADHV || |
4906 | newop->op_type == OP_RV2AV || newop->op_type == OP_RV2HV)) { | |
aeea060c | 4907 | |
11343788 | 4908 | return o; |
a0d0e21e LW |
4909 | } |
4910 | op_free(kUNOP->op_first); | |
4911 | kUNOP->op_first = newop; | |
4912 | } | |
22c35a8c | 4913 | o->op_ppaddr = PL_ppaddr[++o->op_type]; |
11343788 | 4914 | return ck_fun(o); |
a0d0e21e LW |
4915 | } |
4916 | ||
4917 | OP * | |
cea2e8a9 | 4918 | Perl_ck_delete(pTHX_ OP *o) |
a0d0e21e | 4919 | { |
11343788 | 4920 | o = ck_fun(o); |
5dc0d613 | 4921 | o->op_private = 0; |
11343788 MB |
4922 | if (o->op_flags & OPf_KIDS) { |
4923 | OP *kid = cUNOPo->op_first; | |
5f05dabc | 4924 | if (kid->op_type == OP_HSLICE) |
5dc0d613 | 4925 | o->op_private |= OPpSLICE; |
5f05dabc | 4926 | else if (kid->op_type != OP_HELEM) |
cea2e8a9 | 4927 | Perl_croak(aTHX_ "%s argument is not a HASH element or slice", |
22c35a8c | 4928 | PL_op_desc[o->op_type]); |
a0d0e21e | 4929 | null(kid); |
79072805 | 4930 | } |
11343788 | 4931 | return o; |
79072805 LW |
4932 | } |
4933 | ||
4934 | OP * | |
cea2e8a9 | 4935 | Perl_ck_eof(pTHX_ OP *o) |
79072805 | 4936 | { |
11343788 | 4937 | I32 type = o->op_type; |
79072805 | 4938 | |
11343788 MB |
4939 | if (o->op_flags & OPf_KIDS) { |
4940 | if (cLISTOPo->op_first->op_type == OP_STUB) { | |
4941 | op_free(o); | |
4942 | o = newUNOP(type, OPf_SPECIAL, | |
d58bf5aa | 4943 | newGVOP(OP_GV, 0, gv_fetchpv("main::ARGV", TRUE, SVt_PVAV))); |
8990e307 | 4944 | } |
11343788 | 4945 | return ck_fun(o); |
79072805 | 4946 | } |
11343788 | 4947 | return o; |
79072805 LW |
4948 | } |
4949 | ||
4950 | OP * | |
cea2e8a9 | 4951 | Perl_ck_eval(pTHX_ OP *o) |
79072805 | 4952 | { |
3280af22 | 4953 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 MB |
4954 | if (o->op_flags & OPf_KIDS) { |
4955 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 | 4956 | |
93a17b20 | 4957 | if (!kid) { |
11343788 MB |
4958 | o->op_flags &= ~OPf_KIDS; |
4959 | null(o); | |
79072805 LW |
4960 | } |
4961 | else if (kid->op_type == OP_LINESEQ) { | |
4962 | LOGOP *enter; | |
4963 | ||
11343788 MB |
4964 | kid->op_next = o->op_next; |
4965 | cUNOPo->op_first = 0; | |
4966 | op_free(o); | |
79072805 | 4967 | |
b7dc083c | 4968 | NewOp(1101, enter, 1, LOGOP); |
79072805 | 4969 | enter->op_type = OP_ENTERTRY; |
22c35a8c | 4970 | enter->op_ppaddr = PL_ppaddr[OP_ENTERTRY]; |
79072805 LW |
4971 | enter->op_private = 0; |
4972 | ||
4973 | /* establish postfix order */ | |
4974 | enter->op_next = (OP*)enter; | |
4975 | ||
11343788 MB |
4976 | o = prepend_elem(OP_LINESEQ, (OP*)enter, (OP*)kid); |
4977 | o->op_type = OP_LEAVETRY; | |
22c35a8c | 4978 | o->op_ppaddr = PL_ppaddr[OP_LEAVETRY]; |
11343788 MB |
4979 | enter->op_other = o; |
4980 | return o; | |
79072805 | 4981 | } |
c7cc6f1c | 4982 | else |
473986ff | 4983 | scalar((OP*)kid); |
79072805 LW |
4984 | } |
4985 | else { | |
11343788 | 4986 | op_free(o); |
54b9620d | 4987 | o = newUNOP(OP_ENTEREVAL, 0, newDEFSVOP()); |
79072805 | 4988 | } |
3280af22 | 4989 | o->op_targ = (PADOFFSET)PL_hints; |
11343788 | 4990 | return o; |
79072805 LW |
4991 | } |
4992 | ||
4993 | OP * | |
cea2e8a9 | 4994 | Perl_ck_exec(pTHX_ OP *o) |
79072805 LW |
4995 | { |
4996 | OP *kid; | |
11343788 MB |
4997 | if (o->op_flags & OPf_STACKED) { |
4998 | o = ck_fun(o); | |
4999 | kid = cUNOPo->op_first->op_sibling; | |
8990e307 LW |
5000 | if (kid->op_type == OP_RV2GV) |
5001 | null(kid); | |
79072805 | 5002 | } |
463ee0b2 | 5003 | else |
11343788 MB |
5004 | o = listkids(o); |
5005 | return o; | |
79072805 LW |
5006 | } |
5007 | ||
5008 | OP * | |
cea2e8a9 | 5009 | Perl_ck_exists(pTHX_ OP *o) |
5f05dabc | 5010 | { |
5196be3e MB |
5011 | o = ck_fun(o); |
5012 | if (o->op_flags & OPf_KIDS) { | |
5013 | OP *kid = cUNOPo->op_first; | |
5f05dabc | 5014 | if (kid->op_type != OP_HELEM) |
cea2e8a9 | 5015 | Perl_croak(aTHX_ "%s argument is not a HASH element", PL_op_desc[o->op_type]); |
5f05dabc | 5016 | null(kid); |
5017 | } | |
5196be3e | 5018 | return o; |
5f05dabc | 5019 | } |
5020 | ||
22c35a8c | 5021 | #if 0 |
5f05dabc | 5022 | OP * |
cea2e8a9 | 5023 | Perl_ck_gvconst(pTHX_ register OP *o) |
79072805 LW |
5024 | { |
5025 | o = fold_constants(o); | |
5026 | if (o->op_type == OP_CONST) | |
5027 | o->op_type = OP_GV; | |
5028 | return o; | |
5029 | } | |
22c35a8c | 5030 | #endif |
79072805 LW |
5031 | |
5032 | OP * | |
cea2e8a9 | 5033 | Perl_ck_rvconst(pTHX_ register OP *o) |
79072805 | 5034 | { |
11343788 MB |
5035 | dTHR; |
5036 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
85e6fe83 | 5037 | |
3280af22 | 5038 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
79072805 | 5039 | if (kid->op_type == OP_CONST) { |
44a8e56a | 5040 | char *name; |
5041 | int iscv; | |
5042 | GV *gv; | |
779c5bc9 | 5043 | SV *kidsv = kid->op_sv; |
2d8e6c8d | 5044 | STRLEN n_a; |
44a8e56a | 5045 | |
779c5bc9 GS |
5046 | /* Is it a constant from cv_const_sv()? */ |
5047 | if (SvROK(kidsv) && SvREADONLY(kidsv)) { | |
5048 | SV *rsv = SvRV(kidsv); | |
5049 | int svtype = SvTYPE(rsv); | |
5050 | char *badtype = Nullch; | |
5051 | ||
5052 | switch (o->op_type) { | |
5053 | case OP_RV2SV: | |
5054 | if (svtype > SVt_PVMG) | |
5055 | badtype = "a SCALAR"; | |
5056 | break; | |
5057 | case OP_RV2AV: | |
5058 | if (svtype != SVt_PVAV) | |
5059 | badtype = "an ARRAY"; | |
5060 | break; | |
5061 | case OP_RV2HV: | |
5062 | if (svtype != SVt_PVHV) { | |
5063 | if (svtype == SVt_PVAV) { /* pseudohash? */ | |
5064 | SV **ksv = av_fetch((AV*)rsv, 0, FALSE); | |
5065 | if (ksv && SvROK(*ksv) | |
5066 | && SvTYPE(SvRV(*ksv)) == SVt_PVHV) | |
5067 | { | |
5068 | break; | |
5069 | } | |
5070 | } | |
5071 | badtype = "a HASH"; | |
5072 | } | |
5073 | break; | |
5074 | case OP_RV2CV: | |
5075 | if (svtype != SVt_PVCV) | |
5076 | badtype = "a CODE"; | |
5077 | break; | |
5078 | } | |
5079 | if (badtype) | |
cea2e8a9 | 5080 | Perl_croak(aTHX_ "Constant is not %s reference", badtype); |
779c5bc9 GS |
5081 | return o; |
5082 | } | |
2d8e6c8d | 5083 | name = SvPV(kidsv, n_a); |
3280af22 | 5084 | if ((PL_hints & HINT_STRICT_REFS) && (kid->op_private & OPpCONST_BARE)) { |
44a8e56a | 5085 | char *badthing = Nullch; |
5dc0d613 | 5086 | switch (o->op_type) { |
44a8e56a | 5087 | case OP_RV2SV: |
5088 | badthing = "a SCALAR"; | |
5089 | break; | |
5090 | case OP_RV2AV: | |
5091 | badthing = "an ARRAY"; | |
5092 | break; | |
5093 | case OP_RV2HV: | |
5094 | badthing = "a HASH"; | |
5095 | break; | |
5096 | } | |
5097 | if (badthing) | |
cea2e8a9 | 5098 | Perl_croak(aTHX_ |
44a8e56a | 5099 | "Can't use bareword (\"%s\") as %s ref while \"strict refs\" in use", |
5100 | name, badthing); | |
5101 | } | |
93233ece CS |
5102 | /* |
5103 | * This is a little tricky. We only want to add the symbol if we | |
5104 | * didn't add it in the lexer. Otherwise we get duplicate strict | |
5105 | * warnings. But if we didn't add it in the lexer, we must at | |
5106 | * least pretend like we wanted to add it even if it existed before, | |
5107 | * or we get possible typo warnings. OPpCONST_ENTERED says | |
5108 | * whether the lexer already added THIS instance of this symbol. | |
5109 | */ | |
5196be3e | 5110 | iscv = (o->op_type == OP_RV2CV) * 2; |
93233ece | 5111 | do { |
44a8e56a | 5112 | gv = gv_fetchpv(name, |
748a9306 | 5113 | iscv | !(kid->op_private & OPpCONST_ENTERED), |
a0d0e21e LW |
5114 | iscv |
5115 | ? SVt_PVCV | |
11343788 | 5116 | : o->op_type == OP_RV2SV |
a0d0e21e | 5117 | ? SVt_PV |
11343788 | 5118 | : o->op_type == OP_RV2AV |
a0d0e21e | 5119 | ? SVt_PVAV |
11343788 | 5120 | : o->op_type == OP_RV2HV |
a0d0e21e LW |
5121 | ? SVt_PVHV |
5122 | : SVt_PVGV); | |
93233ece CS |
5123 | } while (!gv && !(kid->op_private & OPpCONST_ENTERED) && !iscv++); |
5124 | if (gv) { | |
5125 | kid->op_type = OP_GV; | |
5126 | SvREFCNT_dec(kid->op_sv); | |
350de78d | 5127 | #ifdef USE_ITHREADS |
638eceb6 | 5128 | /* XXX hack: dependence on sizeof(PADOP) <= sizeof(SVOP) */ |
350de78d | 5129 | kPADOP->op_padix = pad_alloc(OP_GV, SVs_PADTMP); |
743e66e6 | 5130 | GvIN_PAD_on(gv); |
350de78d GS |
5131 | PL_curpad[kPADOP->op_padix] = SvREFCNT_inc(gv); |
5132 | #else | |
93233ece | 5133 | kid->op_sv = SvREFCNT_inc(gv); |
350de78d | 5134 | #endif |
76cd736e | 5135 | kid->op_ppaddr = PL_ppaddr[OP_GV]; |
a0d0e21e | 5136 | } |
79072805 | 5137 | } |
11343788 | 5138 | return o; |
79072805 LW |
5139 | } |
5140 | ||
5141 | OP * | |
cea2e8a9 | 5142 | Perl_ck_ftst(pTHX_ OP *o) |
79072805 | 5143 | { |
11343788 MB |
5144 | dTHR; |
5145 | I32 type = o->op_type; | |
79072805 | 5146 | |
d0dca557 JD |
5147 | if (o->op_flags & OPf_REF) { |
5148 | /* nothing */ | |
5149 | } | |
5150 | else if (o->op_flags & OPf_KIDS && cUNOPo->op_first->op_type != OP_STUB) { | |
11343788 | 5151 | SVOP *kid = (SVOP*)cUNOPo->op_first; |
79072805 LW |
5152 | |
5153 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
2d8e6c8d | 5154 | STRLEN n_a; |
a0d0e21e | 5155 | OP *newop = newGVOP(type, OPf_REF, |
2d8e6c8d | 5156 | gv_fetchpv(SvPVx(kid->op_sv, n_a), TRUE, SVt_PVIO)); |
11343788 | 5157 | op_free(o); |
d0dca557 | 5158 | o = newop; |
79072805 LW |
5159 | } |
5160 | } | |
5161 | else { | |
11343788 | 5162 | op_free(o); |
79072805 | 5163 | if (type == OP_FTTTY) |
d0dca557 | 5164 | o = newGVOP(type, OPf_REF, gv_fetchpv("main::STDIN", TRUE, |
85e6fe83 | 5165 | SVt_PVIO)); |
79072805 | 5166 | else |
d0dca557 | 5167 | o = newUNOP(type, 0, newDEFSVOP()); |
79072805 | 5168 | } |
d0dca557 JD |
5169 | #ifdef USE_LOCALE |
5170 | if (type == OP_FTTEXT || type == OP_FTBINARY) { | |
5171 | o->op_private = 0; | |
5172 | if (PL_hints & HINT_LOCALE) | |
5173 | o->op_private |= OPpLOCALE; | |
5174 | } | |
5175 | #endif | |
11343788 | 5176 | return o; |
79072805 LW |
5177 | } |
5178 | ||
5179 | OP * | |
cea2e8a9 | 5180 | Perl_ck_fun(pTHX_ OP *o) |
79072805 | 5181 | { |
11343788 | 5182 | dTHR; |
79072805 LW |
5183 | register OP *kid; |
5184 | OP **tokid; | |
5185 | OP *sibl; | |
5186 | I32 numargs = 0; | |
11343788 | 5187 | int type = o->op_type; |
22c35a8c | 5188 | register I32 oa = PL_opargs[type] >> OASHIFT; |
aeea060c | 5189 | |
11343788 | 5190 | if (o->op_flags & OPf_STACKED) { |
79072805 LW |
5191 | if ((oa & OA_OPTIONAL) && (oa >> 4) && !((oa >> 4) & OA_OPTIONAL)) |
5192 | oa &= ~OA_OPTIONAL; | |
5193 | else | |
11343788 | 5194 | return no_fh_allowed(o); |
79072805 LW |
5195 | } |
5196 | ||
11343788 | 5197 | if (o->op_flags & OPf_KIDS) { |
2d8e6c8d | 5198 | STRLEN n_a; |
11343788 MB |
5199 | tokid = &cLISTOPo->op_first; |
5200 | kid = cLISTOPo->op_first; | |
8990e307 LW |
5201 | if (kid->op_type == OP_PUSHMARK || |
5202 | kid->op_type == OP_NULL && kid->op_targ == OP_PUSHMARK) | |
5203 | { | |
79072805 LW |
5204 | tokid = &kid->op_sibling; |
5205 | kid = kid->op_sibling; | |
5206 | } | |
22c35a8c | 5207 | if (!kid && PL_opargs[type] & OA_DEFGV) |
54b9620d | 5208 | *tokid = kid = newDEFSVOP(); |
79072805 LW |
5209 | |
5210 | while (oa && kid) { | |
5211 | numargs++; | |
5212 | sibl = kid->op_sibling; | |
5213 | switch (oa & 7) { | |
5214 | case OA_SCALAR: | |
62c18ce2 GS |
5215 | /* list seen where single (scalar) arg expected? */ |
5216 | if (numargs == 1 && !(oa >> 4) | |
5217 | && kid->op_type == OP_LIST && type != OP_SCALAR) | |
5218 | { | |
5219 | return too_many_arguments(o,PL_op_desc[type]); | |
5220 | } | |
79072805 LW |
5221 | scalar(kid); |
5222 | break; | |
5223 | case OA_LIST: | |
5224 | if (oa < 16) { | |
5225 | kid = 0; | |
5226 | continue; | |
5227 | } | |
5228 | else | |
5229 | list(kid); | |
5230 | break; | |
5231 | case OA_AVREF: | |
5232 | if (kid->op_type == OP_CONST && | |
62c18ce2 GS |
5233 | (kid->op_private & OPpCONST_BARE)) |
5234 | { | |
2d8e6c8d | 5235 | char *name = SvPVx(((SVOP*)kid)->op_sv, n_a); |
79072805 | 5236 | OP *newop = newAVREF(newGVOP(OP_GV, 0, |
85e6fe83 | 5237 | gv_fetchpv(name, TRUE, SVt_PVAV) )); |
b9c39e73 | 5238 | if (ckWARN(WARN_SYNTAX)) |
cf2093f6 | 5239 | Perl_warner(aTHX_ WARN_SYNTAX, |
57def98f | 5240 | "Array @%s missing the @ in argument %"IVdf" of %s()", |
cf2093f6 | 5241 | name, (IV)numargs, PL_op_desc[type]); |
79072805 LW |
5242 | op_free(kid); |
5243 | kid = newop; | |
5244 | kid->op_sibling = sibl; | |
5245 | *tokid = kid; | |
5246 | } | |
8990e307 | 5247 | else if (kid->op_type != OP_RV2AV && kid->op_type != OP_PADAV) |
35cd451c | 5248 | bad_type(numargs, "array", PL_op_desc[type], kid); |
a0d0e21e | 5249 | mod(kid, type); |
79072805 LW |
5250 | break; |
5251 | case OA_HVREF: | |
5252 | if (kid->op_type == OP_CONST && | |
62c18ce2 GS |
5253 | (kid->op_private & OPpCONST_BARE)) |
5254 | { | |
2d8e6c8d | 5255 | char *name = SvPVx(((SVOP*)kid)->op_sv, n_a); |
79072805 | 5256 | OP *newop = newHVREF(newGVOP(OP_GV, 0, |
85e6fe83 | 5257 | gv_fetchpv(name, TRUE, SVt_PVHV) )); |
b9c39e73 | 5258 | if (ckWARN(WARN_SYNTAX)) |
cf2093f6 | 5259 | Perl_warner(aTHX_ WARN_SYNTAX, |
57def98f | 5260 | "Hash %%%s missing the %% in argument %"IVdf" of %s()", |
cf2093f6 | 5261 | name, (IV)numargs, PL_op_desc[type]); |
79072805 LW |
5262 | op_free(kid); |
5263 | kid = newop; | |
5264 | kid->op_sibling = sibl; | |
5265 | *tokid = kid; | |
5266 | } | |
8990e307 | 5267 | else if (kid->op_type != OP_RV2HV && kid->op_type != OP_PADHV) |
35cd451c | 5268 | bad_type(numargs, "hash", PL_op_desc[type], kid); |
a0d0e21e | 5269 | mod(kid, type); |
79072805 LW |
5270 | break; |
5271 | case OA_CVREF: | |
5272 | { | |
a0d0e21e | 5273 | OP *newop = newUNOP(OP_NULL, 0, kid); |
79072805 LW |
5274 | kid->op_sibling = 0; |
5275 | linklist(kid); | |
5276 | newop->op_next = newop; | |
5277 | kid = newop; | |
5278 | kid->op_sibling = sibl; | |
5279 | *tokid = kid; | |
5280 | } | |
5281 | break; | |
5282 | case OA_FILEREF: | |
c340be78 | 5283 | if (kid->op_type != OP_GV && kid->op_type != OP_RV2GV) { |
79072805 | 5284 | if (kid->op_type == OP_CONST && |
62c18ce2 GS |
5285 | (kid->op_private & OPpCONST_BARE)) |
5286 | { | |
79072805 | 5287 | OP *newop = newGVOP(OP_GV, 0, |
2d8e6c8d | 5288 | gv_fetchpv(SvPVx(((SVOP*)kid)->op_sv, n_a), TRUE, |
85e6fe83 | 5289 | SVt_PVIO) ); |
79072805 LW |
5290 | op_free(kid); |
5291 | kid = newop; | |
5292 | } | |
1ea32a52 GS |
5293 | else if (kid->op_type == OP_READLINE) { |
5294 | /* neophyte patrol: open(<FH>), close(<FH>) etc. */ | |
5295 | bad_type(numargs, "HANDLE", PL_op_desc[o->op_type], kid); | |
5296 | } | |
79072805 | 5297 | else { |
35cd451c | 5298 | I32 flags = OPf_SPECIAL; |
a6c40364 | 5299 | I32 priv = 0; |
2c8ac474 GS |
5300 | PADOFFSET targ = 0; |
5301 | ||
35cd451c | 5302 | /* is this op a FH constructor? */ |
853846ea | 5303 | if (is_handle_constructor(o,numargs)) { |
2c8ac474 GS |
5304 | char *name = Nullch; |
5305 | STRLEN len; | |
5306 | ||
5307 | flags = 0; | |
5308 | /* Set a flag to tell rv2gv to vivify | |
853846ea NIS |
5309 | * need to "prove" flag does not mean something |
5310 | * else already - NI-S 1999/05/07 | |
2c8ac474 GS |
5311 | */ |
5312 | priv = OPpDEREF; | |
5313 | if (kid->op_type == OP_PADSV) { | |
5314 | SV **namep = av_fetch(PL_comppad_name, | |
5315 | kid->op_targ, 4); | |
5316 | if (namep && *namep) | |
5317 | name = SvPV(*namep, len); | |
5318 | } | |
5319 | else if (kid->op_type == OP_RV2SV | |
5320 | && kUNOP->op_first->op_type == OP_GV) | |
5321 | { | |
5322 | GV *gv = cGVOPx_gv(kUNOP->op_first); | |
5323 | name = GvNAME(gv); | |
5324 | len = GvNAMELEN(gv); | |
5325 | } | |
5326 | if (name) { | |
5327 | SV *namesv; | |
5328 | targ = pad_alloc(OP_RV2GV, SVs_PADTMP); | |
5329 | namesv = PL_curpad[targ]; | |
5330 | SvUPGRADE(namesv, SVt_PV); | |
5331 | if (*name != '$') | |
5332 | sv_setpvn(namesv, "$", 1); | |
5333 | sv_catpvn(namesv, name, len); | |
5334 | } | |
853846ea | 5335 | } |
79072805 | 5336 | kid->op_sibling = 0; |
35cd451c | 5337 | kid = newUNOP(OP_RV2GV, flags, scalar(kid)); |
2c8ac474 GS |
5338 | kid->op_targ = targ; |
5339 | kid->op_private |= priv; | |
79072805 LW |
5340 | } |
5341 | kid->op_sibling = sibl; | |
5342 | *tokid = kid; | |
5343 | } | |
5344 | scalar(kid); | |
5345 | break; | |
5346 | case OA_SCALARREF: | |
a0d0e21e | 5347 | mod(scalar(kid), type); |
79072805 LW |
5348 | break; |
5349 | } | |
5350 | oa >>= 4; | |
5351 | tokid = &kid->op_sibling; | |
5352 | kid = kid->op_sibling; | |
5353 | } | |
11343788 | 5354 | o->op_private |= numargs; |
79072805 | 5355 | if (kid) |
22c35a8c | 5356 | return too_many_arguments(o,PL_op_desc[o->op_type]); |
11343788 | 5357 | listkids(o); |
79072805 | 5358 | } |
22c35a8c | 5359 | else if (PL_opargs[type] & OA_DEFGV) { |
11343788 | 5360 | op_free(o); |
54b9620d | 5361 | return newUNOP(type, 0, newDEFSVOP()); |
a0d0e21e LW |
5362 | } |
5363 | ||
79072805 LW |
5364 | if (oa) { |
5365 | while (oa & OA_OPTIONAL) | |
5366 | oa >>= 4; | |
5367 | if (oa && oa != OA_LIST) | |
22c35a8c | 5368 | return too_few_arguments(o,PL_op_desc[o->op_type]); |
79072805 | 5369 | } |
11343788 | 5370 | return o; |
79072805 LW |
5371 | } |
5372 | ||
5373 | OP * | |
cea2e8a9 | 5374 | Perl_ck_glob(pTHX_ OP *o) |
79072805 | 5375 | { |
fb73857a | 5376 | GV *gv; |
5377 | ||
1f2bfc8a | 5378 | if ((o->op_flags & OPf_KIDS) && !cLISTOPo->op_first->op_sibling) |
54b9620d | 5379 | append_elem(OP_GLOB, o, newDEFSVOP()); |
fb73857a | 5380 | |
5381 | if (!((gv = gv_fetchpv("glob", FALSE, SVt_PVCV)) && GvIMPORTED_CV(gv))) | |
5382 | gv = gv_fetchpv("CORE::GLOBAL::glob", FALSE, SVt_PVCV); | |
b1cb66bf | 5383 | |
52bb0670 | 5384 | #if !defined(PERL_EXTERNAL_GLOB) |
72b16652 GS |
5385 | /* XXX this can be tightened up and made more failsafe. */ |
5386 | if (!gv) { | |
5387 | OP *modname = newSVOP(OP_CONST, 0, newSVpvn("File::Glob", 10)); | |
5388 | modname->op_private |= OPpCONST_BARE; | |
5389 | ENTER; | |
5390 | utilize(1, start_subparse(FALSE, 0), Nullop, modname, | |
220398a0 | 5391 | newSVOP(OP_CONST, 0, newSVpvn(":globally", 9))); |
72b16652 GS |
5392 | gv = gv_fetchpv("CORE::GLOBAL::glob", FALSE, SVt_PVCV); |
5393 | LEAVE; | |
5394 | } | |
52bb0670 | 5395 | #endif /* PERL_EXTERNAL_GLOB */ |
72b16652 | 5396 | |
b1cb66bf | 5397 | if (gv && GvIMPORTED_CV(gv)) { |
5196be3e | 5398 | append_elem(OP_GLOB, o, |
80252599 | 5399 | newSVOP(OP_CONST, 0, newSViv(PL_glob_index++))); |
1f2bfc8a | 5400 | o->op_type = OP_LIST; |
22c35a8c | 5401 | o->op_ppaddr = PL_ppaddr[OP_LIST]; |
1f2bfc8a | 5402 | cLISTOPo->op_first->op_type = OP_PUSHMARK; |
22c35a8c | 5403 | cLISTOPo->op_first->op_ppaddr = PL_ppaddr[OP_PUSHMARK]; |
1f2bfc8a | 5404 | o = newUNOP(OP_ENTERSUB, OPf_STACKED, |
aeea060c | 5405 | append_elem(OP_LIST, o, |
1f2bfc8a MB |
5406 | scalar(newUNOP(OP_RV2CV, 0, |
5407 | newGVOP(OP_GV, 0, gv))))); | |
d58bf5aa MB |
5408 | o = newUNOP(OP_NULL, 0, ck_subr(o)); |
5409 | o->op_targ = OP_GLOB; /* hint at what it used to be */ | |
5410 | return o; | |
b1cb66bf | 5411 | } |
5412 | gv = newGVgen("main"); | |
a0d0e21e | 5413 | gv_IOadd(gv); |
11343788 MB |
5414 | append_elem(OP_GLOB, o, newGVOP(OP_GV, 0, gv)); |
5415 | scalarkids(o); | |
5416 | return ck_fun(o); | |
79072805 LW |
5417 | } |
5418 | ||
5419 | OP * | |
cea2e8a9 | 5420 | Perl_ck_grep(pTHX_ OP *o) |
79072805 LW |
5421 | { |
5422 | LOGOP *gwop; | |
5423 | OP *kid; | |
11343788 | 5424 | OPCODE type = o->op_type == OP_GREPSTART ? OP_GREPWHILE : OP_MAPWHILE; |
79072805 | 5425 | |
22c35a8c | 5426 | o->op_ppaddr = PL_ppaddr[OP_GREPSTART]; |
b7dc083c | 5427 | NewOp(1101, gwop, 1, LOGOP); |
aeea060c | 5428 | |
11343788 | 5429 | if (o->op_flags & OPf_STACKED) { |
a0d0e21e | 5430 | OP* k; |
11343788 MB |
5431 | o = ck_sort(o); |
5432 | kid = cLISTOPo->op_first->op_sibling; | |
5433 | for (k = cLISTOPo->op_first->op_sibling->op_next; k; k = k->op_next) { | |
a0d0e21e LW |
5434 | kid = k; |
5435 | } | |
5436 | kid->op_next = (OP*)gwop; | |
11343788 | 5437 | o->op_flags &= ~OPf_STACKED; |
93a17b20 | 5438 | } |
11343788 | 5439 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e LW |
5440 | if (type == OP_MAPWHILE) |
5441 | list(kid); | |
5442 | else | |
5443 | scalar(kid); | |
11343788 | 5444 | o = ck_fun(o); |
3280af22 | 5445 | if (PL_error_count) |
11343788 | 5446 | return o; |
aeea060c | 5447 | kid = cLISTOPo->op_first->op_sibling; |
79072805 | 5448 | if (kid->op_type != OP_NULL) |
cea2e8a9 | 5449 | Perl_croak(aTHX_ "panic: ck_grep"); |
79072805 LW |
5450 | kid = kUNOP->op_first; |
5451 | ||
a0d0e21e | 5452 | gwop->op_type = type; |
22c35a8c | 5453 | gwop->op_ppaddr = PL_ppaddr[type]; |
11343788 | 5454 | gwop->op_first = listkids(o); |
79072805 LW |
5455 | gwop->op_flags |= OPf_KIDS; |
5456 | gwop->op_private = 1; | |
5457 | gwop->op_other = LINKLIST(kid); | |
a0d0e21e | 5458 | gwop->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 LW |
5459 | kid->op_next = (OP*)gwop; |
5460 | ||
11343788 | 5461 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e | 5462 | if (!kid || !kid->op_sibling) |
22c35a8c | 5463 | return too_few_arguments(o,PL_op_desc[o->op_type]); |
a0d0e21e LW |
5464 | for (kid = kid->op_sibling; kid; kid = kid->op_sibling) |
5465 | mod(kid, OP_GREPSTART); | |
5466 | ||
79072805 LW |
5467 | return (OP*)gwop; |
5468 | } | |
5469 | ||
5470 | OP * | |
cea2e8a9 | 5471 | Perl_ck_index(pTHX_ OP *o) |
79072805 | 5472 | { |
11343788 MB |
5473 | if (o->op_flags & OPf_KIDS) { |
5474 | OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
0b71040e LW |
5475 | if (kid) |
5476 | kid = kid->op_sibling; /* get past "big" */ | |
79072805 | 5477 | if (kid && kid->op_type == OP_CONST) |
2779dcf1 | 5478 | fbm_compile(((SVOP*)kid)->op_sv, 0); |
79072805 | 5479 | } |
11343788 | 5480 | return ck_fun(o); |
79072805 LW |
5481 | } |
5482 | ||
5483 | OP * | |
cea2e8a9 | 5484 | Perl_ck_lengthconst(pTHX_ OP *o) |
79072805 LW |
5485 | { |
5486 | /* XXX length optimization goes here */ | |
11343788 | 5487 | return ck_fun(o); |
79072805 LW |
5488 | } |
5489 | ||
5490 | OP * | |
cea2e8a9 | 5491 | Perl_ck_lfun(pTHX_ OP *o) |
79072805 | 5492 | { |
5dc0d613 MB |
5493 | OPCODE type = o->op_type; |
5494 | return modkids(ck_fun(o), type); | |
79072805 LW |
5495 | } |
5496 | ||
5497 | OP * | |
cea2e8a9 | 5498 | Perl_ck_defined(pTHX_ OP *o) /* 19990527 MJD */ |
69794302 | 5499 | { |
20ce7b12 | 5500 | dTHR; |
d0334bed GS |
5501 | if ((o->op_flags & OPf_KIDS) && ckWARN(WARN_DEPRECATED)) { |
5502 | switch (cUNOPo->op_first->op_type) { | |
5503 | case OP_RV2AV: | |
7e291ef1 | 5504 | break; /* Globals via GV can be undef */ |
d0334bed GS |
5505 | case OP_PADAV: |
5506 | case OP_AASSIGN: /* Is this a good idea? */ | |
5507 | Perl_warner(aTHX_ WARN_DEPRECATED, | |
f10b0346 | 5508 | "defined(@array) is deprecated"); |
d0334bed GS |
5509 | Perl_warner(aTHX_ WARN_DEPRECATED, |
5510 | "(Maybe you should just omit the defined()?)\n"); | |
69794302 | 5511 | break; |
d0334bed | 5512 | case OP_RV2HV: |
7e291ef1 | 5513 | break; /* Globals via GV can be undef */ |
d0334bed GS |
5514 | case OP_PADHV: |
5515 | Perl_warner(aTHX_ WARN_DEPRECATED, | |
f10b0346 | 5516 | "defined(%hash) is deprecated"); |
d0334bed GS |
5517 | Perl_warner(aTHX_ WARN_DEPRECATED, |
5518 | "(Maybe you should just omit the defined()?)\n"); | |
5519 | break; | |
5520 | default: | |
5521 | /* no warning */ | |
5522 | break; | |
5523 | } | |
69794302 MJD |
5524 | } |
5525 | return ck_rfun(o); | |
5526 | } | |
5527 | ||
5528 | OP * | |
cea2e8a9 | 5529 | Perl_ck_rfun(pTHX_ OP *o) |
8990e307 | 5530 | { |
5dc0d613 MB |
5531 | OPCODE type = o->op_type; |
5532 | return refkids(ck_fun(o), type); | |
8990e307 LW |
5533 | } |
5534 | ||
5535 | OP * | |
cea2e8a9 | 5536 | Perl_ck_listiob(pTHX_ OP *o) |
79072805 LW |
5537 | { |
5538 | register OP *kid; | |
aeea060c | 5539 | |
11343788 | 5540 | kid = cLISTOPo->op_first; |
79072805 | 5541 | if (!kid) { |
11343788 MB |
5542 | o = force_list(o); |
5543 | kid = cLISTOPo->op_first; | |
79072805 LW |
5544 | } |
5545 | if (kid->op_type == OP_PUSHMARK) | |
5546 | kid = kid->op_sibling; | |
11343788 | 5547 | if (kid && o->op_flags & OPf_STACKED) |
79072805 LW |
5548 | kid = kid->op_sibling; |
5549 | else if (kid && !kid->op_sibling) { /* print HANDLE; */ | |
5550 | if (kid->op_type == OP_CONST && kid->op_private & OPpCONST_BARE) { | |
11343788 | 5551 | o->op_flags |= OPf_STACKED; /* make it a filehandle */ |
748a9306 | 5552 | kid = newUNOP(OP_RV2GV, OPf_REF, scalar(kid)); |
11343788 MB |
5553 | cLISTOPo->op_first->op_sibling = kid; |
5554 | cLISTOPo->op_last = kid; | |
79072805 LW |
5555 | kid = kid->op_sibling; |
5556 | } | |
5557 | } | |
5558 | ||
5559 | if (!kid) | |
54b9620d | 5560 | append_elem(o->op_type, o, newDEFSVOP()); |
79072805 | 5561 | |
5dc0d613 | 5562 | o = listkids(o); |
bbce6d69 | 5563 | |
5dc0d613 | 5564 | o->op_private = 0; |
36477c24 | 5565 | #ifdef USE_LOCALE |
3280af22 | 5566 | if (PL_hints & HINT_LOCALE) |
5dc0d613 | 5567 | o->op_private |= OPpLOCALE; |
bbce6d69 | 5568 | #endif |
5569 | ||
5dc0d613 | 5570 | return o; |
bbce6d69 | 5571 | } |
5572 | ||
5573 | OP * | |
cea2e8a9 | 5574 | Perl_ck_fun_locale(pTHX_ OP *o) |
bbce6d69 | 5575 | { |
5dc0d613 | 5576 | o = ck_fun(o); |
bbce6d69 | 5577 | |
5dc0d613 | 5578 | o->op_private = 0; |
36477c24 | 5579 | #ifdef USE_LOCALE |
3280af22 | 5580 | if (PL_hints & HINT_LOCALE) |
5dc0d613 | 5581 | o->op_private |= OPpLOCALE; |
bbce6d69 | 5582 | #endif |
5583 | ||
5dc0d613 | 5584 | return o; |
bbce6d69 | 5585 | } |
5586 | ||
5587 | OP * | |
b162f9ea IZ |
5588 | Perl_ck_sassign(pTHX_ OP *o) |
5589 | { | |
5590 | OP *kid = cLISTOPo->op_first; | |
5591 | /* has a disposable target? */ | |
5592 | if ((PL_opargs[kid->op_type] & OA_TARGLEX) | |
5593 | && !(kid->op_flags & OPf_STACKED)) | |
5594 | { | |
5595 | OP *kkid = kid->op_sibling; | |
5596 | ||
5597 | /* Can just relocate the target. */ | |
2c2d71f5 JH |
5598 | if (kkid && kkid->op_type == OP_PADSV |
5599 | && !(kkid->op_private & OPpLVAL_INTRO)) | |
5600 | { | |
b162f9ea | 5601 | kid->op_targ = kkid->op_targ; |
743e66e6 | 5602 | kkid->op_targ = 0; |
b162f9ea IZ |
5603 | /* Now we do not need PADSV and SASSIGN. */ |
5604 | kid->op_sibling = o->op_sibling; /* NULL */ | |
5605 | cLISTOPo->op_first = NULL; | |
5606 | op_free(o); | |
5607 | op_free(kkid); | |
5608 | kid->op_private |= OPpTARGET_MY; /* Used for context settings */ | |
5609 | return kid; | |
5610 | } | |
5611 | } | |
5612 | return o; | |
5613 | } | |
5614 | ||
5615 | OP * | |
cea2e8a9 | 5616 | Perl_ck_scmp(pTHX_ OP *o) |
bbce6d69 | 5617 | { |
5dc0d613 | 5618 | o->op_private = 0; |
36477c24 | 5619 | #ifdef USE_LOCALE |
3280af22 | 5620 | if (PL_hints & HINT_LOCALE) |
5dc0d613 | 5621 | o->op_private |= OPpLOCALE; |
bbce6d69 | 5622 | #endif |
36477c24 | 5623 | |
5dc0d613 | 5624 | return o; |
79072805 LW |
5625 | } |
5626 | ||
5627 | OP * | |
cea2e8a9 | 5628 | Perl_ck_match(pTHX_ OP *o) |
79072805 | 5629 | { |
5dc0d613 | 5630 | o->op_private |= OPpRUNTIME; |
11343788 | 5631 | return o; |
79072805 LW |
5632 | } |
5633 | ||
5634 | OP * | |
f5d5a27c CS |
5635 | Perl_ck_method(pTHX_ OP *o) |
5636 | { | |
5637 | OP *kid = cUNOPo->op_first; | |
5638 | if (kid->op_type == OP_CONST) { | |
5639 | SV* sv = kSVOP->op_sv; | |
5640 | if (!(strchr(SvPVX(sv), ':') || strchr(SvPVX(sv), '\''))) { | |
5641 | OP *cmop; | |
5642 | sv_upgrade(sv, SVt_PVIV); | |
5643 | SvIOK_on(sv); | |
5644 | PERL_HASH(SvUVX(sv), SvPVX(sv), SvCUR(sv)); | |
5645 | cmop = newSVOP(OP_METHOD_NAMED, 0, sv); | |
5646 | kSVOP->op_sv = Nullsv; | |
5647 | op_free(o); | |
5648 | return cmop; | |
5649 | } | |
5650 | } | |
5651 | return o; | |
5652 | } | |
5653 | ||
5654 | OP * | |
cea2e8a9 | 5655 | Perl_ck_null(pTHX_ OP *o) |
79072805 | 5656 | { |
11343788 | 5657 | return o; |
79072805 LW |
5658 | } |
5659 | ||
5660 | OP * | |
cea2e8a9 | 5661 | Perl_ck_repeat(pTHX_ OP *o) |
79072805 | 5662 | { |
11343788 MB |
5663 | if (cBINOPo->op_first->op_flags & OPf_PARENS) { |
5664 | o->op_private |= OPpREPEAT_DOLIST; | |
5665 | cBINOPo->op_first = force_list(cBINOPo->op_first); | |
79072805 LW |
5666 | } |
5667 | else | |
11343788 MB |
5668 | scalar(o); |
5669 | return o; | |
79072805 LW |
5670 | } |
5671 | ||
5672 | OP * | |
cea2e8a9 | 5673 | Perl_ck_require(pTHX_ OP *o) |
8990e307 | 5674 | { |
11343788 MB |
5675 | if (o->op_flags & OPf_KIDS) { /* Shall we supply missing .pm? */ |
5676 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
8990e307 LW |
5677 | |
5678 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
8990e307 | 5679 | char *s; |
a0d0e21e LW |
5680 | for (s = SvPVX(kid->op_sv); *s; s++) { |
5681 | if (*s == ':' && s[1] == ':') { | |
5682 | *s = '/'; | |
1aef975c | 5683 | Move(s+2, s+1, strlen(s+2)+1, char); |
a0d0e21e LW |
5684 | --SvCUR(kid->op_sv); |
5685 | } | |
8990e307 | 5686 | } |
a0d0e21e | 5687 | sv_catpvn(kid->op_sv, ".pm", 3); |
8990e307 LW |
5688 | } |
5689 | } | |
11343788 | 5690 | return ck_fun(o); |
8990e307 LW |
5691 | } |
5692 | ||
22c35a8c | 5693 | #if 0 |
8990e307 | 5694 | OP * |
cea2e8a9 | 5695 | Perl_ck_retarget(pTHX_ OP *o) |
79072805 | 5696 | { |
cea2e8a9 | 5697 | Perl_croak(aTHX_ "NOT IMPL LINE %d",__LINE__); |
79072805 | 5698 | /* STUB */ |
11343788 | 5699 | return o; |
79072805 | 5700 | } |
22c35a8c | 5701 | #endif |
79072805 LW |
5702 | |
5703 | OP * | |
cea2e8a9 | 5704 | Perl_ck_select(pTHX_ OP *o) |
79072805 | 5705 | { |
c07a80fd | 5706 | OP* kid; |
11343788 MB |
5707 | if (o->op_flags & OPf_KIDS) { |
5708 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
2304df62 | 5709 | if (kid && kid->op_sibling) { |
11343788 | 5710 | o->op_type = OP_SSELECT; |
22c35a8c | 5711 | o->op_ppaddr = PL_ppaddr[OP_SSELECT]; |
11343788 MB |
5712 | o = ck_fun(o); |
5713 | return fold_constants(o); | |
79072805 LW |
5714 | } |
5715 | } | |
11343788 MB |
5716 | o = ck_fun(o); |
5717 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
c07a80fd | 5718 | if (kid && kid->op_type == OP_RV2GV) |
5719 | kid->op_private &= ~HINT_STRICT_REFS; | |
11343788 | 5720 | return o; |
79072805 LW |
5721 | } |
5722 | ||
5723 | OP * | |
cea2e8a9 | 5724 | Perl_ck_shift(pTHX_ OP *o) |
79072805 | 5725 | { |
11343788 | 5726 | I32 type = o->op_type; |
79072805 | 5727 | |
11343788 | 5728 | if (!(o->op_flags & OPf_KIDS)) { |
6d4ff0d2 MB |
5729 | OP *argop; |
5730 | ||
11343788 | 5731 | op_free(o); |
6d4ff0d2 | 5732 | #ifdef USE_THREADS |
533c011a | 5733 | if (!CvUNIQUE(PL_compcv)) { |
6d4ff0d2 | 5734 | argop = newOP(OP_PADAV, OPf_REF); |
6b88bc9c | 5735 | argop->op_targ = 0; /* PL_curpad[0] is @_ */ |
6d4ff0d2 MB |
5736 | } |
5737 | else { | |
5738 | argop = newUNOP(OP_RV2AV, 0, | |
5739 | scalar(newGVOP(OP_GV, 0, | |
5740 | gv_fetchpv("ARGV", TRUE, SVt_PVAV)))); | |
5741 | } | |
5742 | #else | |
5743 | argop = newUNOP(OP_RV2AV, 0, | |
3280af22 NIS |
5744 | scalar(newGVOP(OP_GV, 0, !CvUNIQUE(PL_compcv) ? |
5745 | PL_defgv : gv_fetchpv("ARGV", TRUE, SVt_PVAV)))); | |
6d4ff0d2 MB |
5746 | #endif /* USE_THREADS */ |
5747 | return newUNOP(type, 0, scalar(argop)); | |
79072805 | 5748 | } |
11343788 | 5749 | return scalar(modkids(ck_fun(o), type)); |
79072805 LW |
5750 | } |
5751 | ||
5752 | OP * | |
cea2e8a9 | 5753 | Perl_ck_sort(pTHX_ OP *o) |
79072805 | 5754 | { |
5dc0d613 | 5755 | o->op_private = 0; |
36477c24 | 5756 | #ifdef USE_LOCALE |
3280af22 | 5757 | if (PL_hints & HINT_LOCALE) |
5dc0d613 | 5758 | o->op_private |= OPpLOCALE; |
bbce6d69 | 5759 | #endif |
5760 | ||
9ea6e965 | 5761 | if (o->op_type == OP_SORT && o->op_flags & OPf_STACKED) |
51a19bc0 | 5762 | simplify_sort(o); |
9c007264 | 5763 | if (o->op_flags & OPf_STACKED) { /* may have been cleared */ |
11343788 | 5764 | OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
463ee0b2 | 5765 | OP *k; |
82092f1d | 5766 | kid = kUNOP->op_first; /* get past null */ |
79072805 | 5767 | |
463ee0b2 | 5768 | if (kid->op_type == OP_SCOPE || kid->op_type == OP_LEAVE) { |
79072805 | 5769 | linklist(kid); |
463ee0b2 LW |
5770 | if (kid->op_type == OP_SCOPE) { |
5771 | k = kid->op_next; | |
5772 | kid->op_next = 0; | |
79072805 | 5773 | } |
463ee0b2 | 5774 | else if (kid->op_type == OP_LEAVE) { |
11343788 | 5775 | if (o->op_type == OP_SORT) { |
748a9306 LW |
5776 | null(kid); /* wipe out leave */ |
5777 | kid->op_next = kid; | |
463ee0b2 | 5778 | |
748a9306 LW |
5779 | for (k = kLISTOP->op_first->op_next; k; k = k->op_next) { |
5780 | if (k->op_next == kid) | |
5781 | k->op_next = 0; | |
5782 | } | |
463ee0b2 | 5783 | } |
748a9306 LW |
5784 | else |
5785 | kid->op_next = 0; /* just disconnect the leave */ | |
a0d0e21e | 5786 | k = kLISTOP->op_first; |
463ee0b2 | 5787 | } |
a0d0e21e LW |
5788 | peep(k); |
5789 | ||
11343788 | 5790 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
11343788 | 5791 | if (o->op_type == OP_SORT) |
a0d0e21e LW |
5792 | kid->op_next = kid; |
5793 | else | |
5794 | kid->op_next = k; | |
11343788 | 5795 | o->op_flags |= OPf_SPECIAL; |
79072805 | 5796 | } |
c6e96bcb GS |
5797 | else if (kid->op_type == OP_RV2SV || kid->op_type == OP_PADSV) |
5798 | null(cLISTOPo->op_first->op_sibling); | |
79072805 | 5799 | } |
bbce6d69 | 5800 | |
11343788 | 5801 | return o; |
79072805 | 5802 | } |
bda4119b GS |
5803 | |
5804 | STATIC void | |
cea2e8a9 | 5805 | S_simplify_sort(pTHX_ OP *o) |
9c007264 | 5806 | { |
51a19bc0 | 5807 | dTHR; |
9c007264 JH |
5808 | register OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
5809 | OP *k; | |
5810 | int reversed; | |
350de78d | 5811 | GV *gv; |
9c007264 JH |
5812 | if (!(o->op_flags & OPf_STACKED)) |
5813 | return; | |
9ea6e965 GS |
5814 | GvMULTI_on(gv_fetchpv("a", TRUE, SVt_PV)); |
5815 | GvMULTI_on(gv_fetchpv("b", TRUE, SVt_PV)); | |
82092f1d | 5816 | kid = kUNOP->op_first; /* get past null */ |
9c007264 JH |
5817 | if (kid->op_type != OP_SCOPE) |
5818 | return; | |
5819 | kid = kLISTOP->op_last; /* get past scope */ | |
5820 | switch(kid->op_type) { | |
5821 | case OP_NCMP: | |
5822 | case OP_I_NCMP: | |
5823 | case OP_SCMP: | |
5824 | break; | |
5825 | default: | |
5826 | return; | |
5827 | } | |
5828 | k = kid; /* remember this node*/ | |
5829 | if (kBINOP->op_first->op_type != OP_RV2SV) | |
5830 | return; | |
5831 | kid = kBINOP->op_first; /* get past cmp */ | |
5832 | if (kUNOP->op_first->op_type != OP_GV) | |
5833 | return; | |
5834 | kid = kUNOP->op_first; /* get past rv2sv */ | |
638eceb6 | 5835 | gv = kGVOP_gv; |
350de78d | 5836 | if (GvSTASH(gv) != PL_curstash) |
9c007264 | 5837 | return; |
350de78d | 5838 | if (strEQ(GvNAME(gv), "a")) |
9c007264 | 5839 | reversed = 0; |
350de78d | 5840 | else if(strEQ(GvNAME(gv), "b")) |
9c007264 JH |
5841 | reversed = 1; |
5842 | else | |
5843 | return; | |
5844 | kid = k; /* back to cmp */ | |
5845 | if (kBINOP->op_last->op_type != OP_RV2SV) | |
5846 | return; | |
5847 | kid = kBINOP->op_last; /* down to 2nd arg */ | |
5848 | if (kUNOP->op_first->op_type != OP_GV) | |
5849 | return; | |
5850 | kid = kUNOP->op_first; /* get past rv2sv */ | |
638eceb6 | 5851 | gv = kGVOP_gv; |
350de78d | 5852 | if (GvSTASH(gv) != PL_curstash |
9c007264 | 5853 | || ( reversed |
350de78d GS |
5854 | ? strNE(GvNAME(gv), "a") |
5855 | : strNE(GvNAME(gv), "b"))) | |
9c007264 JH |
5856 | return; |
5857 | o->op_flags &= ~(OPf_STACKED | OPf_SPECIAL); | |
5858 | if (reversed) | |
5859 | o->op_private |= OPpSORT_REVERSE; | |
5860 | if (k->op_type == OP_NCMP) | |
5861 | o->op_private |= OPpSORT_NUMERIC; | |
5862 | if (k->op_type == OP_I_NCMP) | |
5863 | o->op_private |= OPpSORT_NUMERIC | OPpSORT_INTEGER; | |
e507f050 SM |
5864 | kid = cLISTOPo->op_first->op_sibling; |
5865 | cLISTOPo->op_first->op_sibling = kid->op_sibling; /* bypass old block */ | |
5866 | op_free(kid); /* then delete it */ | |
5867 | cLISTOPo->op_children--; | |
9c007264 | 5868 | } |
79072805 LW |
5869 | |
5870 | OP * | |
cea2e8a9 | 5871 | Perl_ck_split(pTHX_ OP *o) |
79072805 LW |
5872 | { |
5873 | register OP *kid; | |
aeea060c | 5874 | |
11343788 MB |
5875 | if (o->op_flags & OPf_STACKED) |
5876 | return no_fh_allowed(o); | |
79072805 | 5877 | |
11343788 | 5878 | kid = cLISTOPo->op_first; |
8990e307 | 5879 | if (kid->op_type != OP_NULL) |
cea2e8a9 | 5880 | Perl_croak(aTHX_ "panic: ck_split"); |
8990e307 | 5881 | kid = kid->op_sibling; |
11343788 MB |
5882 | op_free(cLISTOPo->op_first); |
5883 | cLISTOPo->op_first = kid; | |
85e6fe83 | 5884 | if (!kid) { |
79cb57f6 | 5885 | cLISTOPo->op_first = kid = newSVOP(OP_CONST, 0, newSVpvn(" ", 1)); |
11343788 | 5886 | cLISTOPo->op_last = kid; /* There was only one element previously */ |
85e6fe83 | 5887 | } |
79072805 LW |
5888 | |
5889 | if (kid->op_type != OP_MATCH) { | |
5890 | OP *sibl = kid->op_sibling; | |
463ee0b2 | 5891 | kid->op_sibling = 0; |
79072805 | 5892 | kid = pmruntime( newPMOP(OP_MATCH, OPf_SPECIAL), kid, Nullop); |
11343788 MB |
5893 | if (cLISTOPo->op_first == cLISTOPo->op_last) |
5894 | cLISTOPo->op_last = kid; | |
5895 | cLISTOPo->op_first = kid; | |
79072805 LW |
5896 | kid->op_sibling = sibl; |
5897 | } | |
5898 | ||
5899 | kid->op_type = OP_PUSHRE; | |
22c35a8c | 5900 | kid->op_ppaddr = PL_ppaddr[OP_PUSHRE]; |
79072805 LW |
5901 | scalar(kid); |
5902 | ||
5903 | if (!kid->op_sibling) | |
54b9620d | 5904 | append_elem(OP_SPLIT, o, newDEFSVOP()); |
79072805 LW |
5905 | |
5906 | kid = kid->op_sibling; | |
5907 | scalar(kid); | |
5908 | ||
5909 | if (!kid->op_sibling) | |
11343788 | 5910 | append_elem(OP_SPLIT, o, newSVOP(OP_CONST, 0, newSViv(0))); |
79072805 LW |
5911 | |
5912 | kid = kid->op_sibling; | |
5913 | scalar(kid); | |
5914 | ||
5915 | if (kid->op_sibling) | |
22c35a8c | 5916 | return too_many_arguments(o,PL_op_desc[o->op_type]); |
79072805 | 5917 | |
11343788 | 5918 | return o; |
79072805 LW |
5919 | } |
5920 | ||
5921 | OP * | |
eb6e2d6f GS |
5922 | Perl_ck_join(pTHX_ OP *o) |
5923 | { | |
5924 | if (ckWARN(WARN_SYNTAX)) { | |
5925 | OP *kid = cLISTOPo->op_first->op_sibling; | |
5926 | if (kid && kid->op_type == OP_MATCH) { | |
5927 | char *pmstr = "STRING"; | |
5928 | if (kPMOP->op_pmregexp) | |
5929 | pmstr = kPMOP->op_pmregexp->precomp; | |
5930 | Perl_warner(aTHX_ WARN_SYNTAX, | |
5931 | "/%s/ should probably be written as \"%s\"", | |
5932 | pmstr, pmstr); | |
5933 | } | |
5934 | } | |
5935 | return ck_fun(o); | |
5936 | } | |
5937 | ||
5938 | OP * | |
cea2e8a9 | 5939 | Perl_ck_subr(pTHX_ OP *o) |
79072805 | 5940 | { |
11343788 MB |
5941 | dTHR; |
5942 | OP *prev = ((cUNOPo->op_first->op_sibling) | |
5943 | ? cUNOPo : ((UNOP*)cUNOPo->op_first))->op_first; | |
5944 | OP *o2 = prev->op_sibling; | |
4633a7c4 LW |
5945 | OP *cvop; |
5946 | char *proto = 0; | |
5947 | CV *cv = 0; | |
46fc3d4c | 5948 | GV *namegv = 0; |
4633a7c4 LW |
5949 | int optional = 0; |
5950 | I32 arg = 0; | |
2d8e6c8d | 5951 | STRLEN n_a; |
4633a7c4 | 5952 | |
d3011074 | 5953 | o->op_private |= OPpENTERSUB_HASTARG; |
11343788 | 5954 | for (cvop = o2; cvop->op_sibling; cvop = cvop->op_sibling) ; |
4633a7c4 LW |
5955 | if (cvop->op_type == OP_RV2CV) { |
5956 | SVOP* tmpop; | |
11343788 | 5957 | o->op_private |= (cvop->op_private & OPpENTERSUB_AMPER); |
4633a7c4 LW |
5958 | null(cvop); /* disable rv2cv */ |
5959 | tmpop = (SVOP*)((UNOP*)cvop)->op_first; | |
76cd736e | 5960 | if (tmpop->op_type == OP_GV && !(o->op_private & OPpENTERSUB_AMPER)) { |
638eceb6 | 5961 | GV *gv = cGVOPx_gv(tmpop); |
350de78d | 5962 | cv = GvCVu(gv); |
76cd736e GS |
5963 | if (!cv) |
5964 | tmpop->op_private |= OPpEARLY_CV; | |
5965 | else if (SvPOK(cv)) { | |
350de78d | 5966 | namegv = CvANON(cv) ? gv : CvGV(cv); |
2d8e6c8d | 5967 | proto = SvPV((SV*)cv, n_a); |
46fc3d4c | 5968 | } |
4633a7c4 LW |
5969 | } |
5970 | } | |
f5d5a27c | 5971 | else if (cvop->op_type == OP_METHOD || cvop->op_type == OP_METHOD_NAMED) { |
7a52d87a GS |
5972 | if (o2->op_type == OP_CONST) |
5973 | o2->op_private &= ~OPpCONST_STRICT; | |
58a40671 GS |
5974 | else if (o2->op_type == OP_LIST) { |
5975 | OP *o = ((UNOP*)o2)->op_first->op_sibling; | |
5976 | if (o && o->op_type == OP_CONST) | |
5977 | o->op_private &= ~OPpCONST_STRICT; | |
5978 | } | |
7a52d87a | 5979 | } |
3280af22 NIS |
5980 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
5981 | if (PERLDB_SUB && PL_curstash != PL_debstash) | |
11343788 MB |
5982 | o->op_private |= OPpENTERSUB_DB; |
5983 | while (o2 != cvop) { | |
4633a7c4 LW |
5984 | if (proto) { |
5985 | switch (*proto) { | |
5986 | case '\0': | |
5dc0d613 | 5987 | return too_many_arguments(o, gv_ename(namegv)); |
4633a7c4 LW |
5988 | case ';': |
5989 | optional = 1; | |
5990 | proto++; | |
5991 | continue; | |
5992 | case '$': | |
5993 | proto++; | |
5994 | arg++; | |
11343788 | 5995 | scalar(o2); |
4633a7c4 LW |
5996 | break; |
5997 | case '%': | |
5998 | case '@': | |
11343788 | 5999 | list(o2); |
4633a7c4 LW |
6000 | arg++; |
6001 | break; | |
6002 | case '&': | |
6003 | proto++; | |
6004 | arg++; | |
11343788 | 6005 | if (o2->op_type != OP_REFGEN && o2->op_type != OP_UNDEF) |
5dc0d613 | 6006 | bad_type(arg, "block", gv_ename(namegv), o2); |
4633a7c4 LW |
6007 | break; |
6008 | case '*': | |
2ba6ecf4 | 6009 | /* '*' allows any scalar type, including bareword */ |
4633a7c4 LW |
6010 | proto++; |
6011 | arg++; | |
11343788 | 6012 | if (o2->op_type == OP_RV2GV) |
2ba6ecf4 | 6013 | goto wrapref; /* autoconvert GLOB -> GLOBref */ |
7a52d87a GS |
6014 | else if (o2->op_type == OP_CONST) |
6015 | o2->op_private &= ~OPpCONST_STRICT; | |
9675f7ac GS |
6016 | else if (o2->op_type == OP_ENTERSUB) { |
6017 | /* accidental subroutine, revert to bareword */ | |
6018 | OP *gvop = ((UNOP*)o2)->op_first; | |
6019 | if (gvop && gvop->op_type == OP_NULL) { | |
6020 | gvop = ((UNOP*)gvop)->op_first; | |
6021 | if (gvop) { | |
6022 | for (; gvop->op_sibling; gvop = gvop->op_sibling) | |
6023 | ; | |
6024 | if (gvop && | |
6025 | (gvop->op_private & OPpENTERSUB_NOPAREN) && | |
6026 | (gvop = ((UNOP*)gvop)->op_first) && | |
6027 | gvop->op_type == OP_GV) | |
6028 | { | |
638eceb6 | 6029 | GV *gv = cGVOPx_gv(gvop); |
9675f7ac | 6030 | OP *sibling = o2->op_sibling; |
2692f720 | 6031 | SV *n = newSVpvn("",0); |
9675f7ac | 6032 | op_free(o2); |
2692f720 GS |
6033 | gv_fullname3(n, gv, ""); |
6034 | if (SvCUR(n)>6 && strnEQ(SvPVX(n),"main::",6)) | |
6035 | sv_chop(n, SvPVX(n)+6); | |
6036 | o2 = newSVOP(OP_CONST, 0, n); | |
9675f7ac GS |
6037 | prev->op_sibling = o2; |
6038 | o2->op_sibling = sibling; | |
6039 | } | |
6040 | } | |
6041 | } | |
6042 | } | |
2ba6ecf4 GS |
6043 | scalar(o2); |
6044 | break; | |
4633a7c4 LW |
6045 | case '\\': |
6046 | proto++; | |
6047 | arg++; | |
6048 | switch (*proto++) { | |
6049 | case '*': | |
11343788 | 6050 | if (o2->op_type != OP_RV2GV) |
5dc0d613 | 6051 | bad_type(arg, "symbol", gv_ename(namegv), o2); |
4633a7c4 LW |
6052 | goto wrapref; |
6053 | case '&': | |
11343788 | 6054 | if (o2->op_type != OP_RV2CV) |
5dc0d613 | 6055 | bad_type(arg, "sub", gv_ename(namegv), o2); |
4633a7c4 LW |
6056 | goto wrapref; |
6057 | case '$': | |
386acf99 GS |
6058 | if (o2->op_type != OP_RV2SV |
6059 | && o2->op_type != OP_PADSV | |
1c01eb51 GS |
6060 | && o2->op_type != OP_HELEM |
6061 | && o2->op_type != OP_AELEM | |
386acf99 GS |
6062 | && o2->op_type != OP_THREADSV) |
6063 | { | |
5dc0d613 | 6064 | bad_type(arg, "scalar", gv_ename(namegv), o2); |
386acf99 | 6065 | } |
4633a7c4 LW |
6066 | goto wrapref; |
6067 | case '@': | |
11343788 | 6068 | if (o2->op_type != OP_RV2AV && o2->op_type != OP_PADAV) |
5dc0d613 | 6069 | bad_type(arg, "array", gv_ename(namegv), o2); |
4633a7c4 LW |
6070 | goto wrapref; |
6071 | case '%': | |
11343788 | 6072 | if (o2->op_type != OP_RV2HV && o2->op_type != OP_PADHV) |
5dc0d613 | 6073 | bad_type(arg, "hash", gv_ename(namegv), o2); |
4633a7c4 LW |
6074 | wrapref: |
6075 | { | |
11343788 | 6076 | OP* kid = o2; |
6fa846a0 | 6077 | OP* sib = kid->op_sibling; |
4633a7c4 | 6078 | kid->op_sibling = 0; |
6fa846a0 GS |
6079 | o2 = newUNOP(OP_REFGEN, 0, kid); |
6080 | o2->op_sibling = sib; | |
e858de61 | 6081 | prev->op_sibling = o2; |
4633a7c4 LW |
6082 | } |
6083 | break; | |
6084 | default: goto oops; | |
6085 | } | |
6086 | break; | |
b1cb66bf | 6087 | case ' ': |
6088 | proto++; | |
6089 | continue; | |
4633a7c4 LW |
6090 | default: |
6091 | oops: | |
cea2e8a9 | 6092 | Perl_croak(aTHX_ "Malformed prototype for %s: %s", |
2d8e6c8d | 6093 | gv_ename(namegv), SvPV((SV*)cv, n_a)); |
4633a7c4 LW |
6094 | } |
6095 | } | |
6096 | else | |
11343788 MB |
6097 | list(o2); |
6098 | mod(o2, OP_ENTERSUB); | |
6099 | prev = o2; | |
6100 | o2 = o2->op_sibling; | |
4633a7c4 | 6101 | } |
fb73857a | 6102 | if (proto && !optional && |
6103 | (*proto && *proto != '@' && *proto != '%' && *proto != ';')) | |
5dc0d613 | 6104 | return too_few_arguments(o, gv_ename(namegv)); |
11343788 | 6105 | return o; |
79072805 LW |
6106 | } |
6107 | ||
6108 | OP * | |
cea2e8a9 | 6109 | Perl_ck_svconst(pTHX_ OP *o) |
8990e307 | 6110 | { |
11343788 MB |
6111 | SvREADONLY_on(cSVOPo->op_sv); |
6112 | return o; | |
8990e307 LW |
6113 | } |
6114 | ||
6115 | OP * | |
cea2e8a9 | 6116 | Perl_ck_trunc(pTHX_ OP *o) |
79072805 | 6117 | { |
11343788 MB |
6118 | if (o->op_flags & OPf_KIDS) { |
6119 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 | 6120 | |
a0d0e21e LW |
6121 | if (kid->op_type == OP_NULL) |
6122 | kid = (SVOP*)kid->op_sibling; | |
bb53490d GS |
6123 | if (kid && kid->op_type == OP_CONST && |
6124 | (kid->op_private & OPpCONST_BARE)) | |
6125 | { | |
11343788 | 6126 | o->op_flags |= OPf_SPECIAL; |
bb53490d GS |
6127 | kid->op_private &= ~OPpCONST_STRICT; |
6128 | } | |
79072805 | 6129 | } |
11343788 | 6130 | return ck_fun(o); |
79072805 LW |
6131 | } |
6132 | ||
463ee0b2 LW |
6133 | /* A peephole optimizer. We visit the ops in the order they're to execute. */ |
6134 | ||
79072805 | 6135 | void |
864dbfa3 | 6136 | Perl_peep(pTHX_ register OP *o) |
79072805 | 6137 | { |
11343788 | 6138 | dTHR; |
79072805 | 6139 | register OP* oldop = 0; |
2d8e6c8d | 6140 | STRLEN n_a; |
cd06dffe | 6141 | OP *last_composite = Nullop; |
2d8e6c8d | 6142 | |
a0d0e21e | 6143 | if (!o || o->op_seq) |
79072805 | 6144 | return; |
a0d0e21e | 6145 | ENTER; |
462e5cf6 | 6146 | SAVEOP(); |
7766f137 | 6147 | SAVEVPTR(PL_curcop); |
a0d0e21e LW |
6148 | for (; o; o = o->op_next) { |
6149 | if (o->op_seq) | |
6150 | break; | |
3280af22 NIS |
6151 | if (!PL_op_seqmax) |
6152 | PL_op_seqmax++; | |
533c011a | 6153 | PL_op = o; |
a0d0e21e | 6154 | switch (o->op_type) { |
acb36ea4 | 6155 | case OP_SETSTATE: |
a0d0e21e LW |
6156 | case OP_NEXTSTATE: |
6157 | case OP_DBSTATE: | |
3280af22 NIS |
6158 | PL_curcop = ((COP*)o); /* for warnings */ |
6159 | o->op_seq = PL_op_seqmax++; | |
cd06dffe | 6160 | last_composite = Nullop; |
a0d0e21e LW |
6161 | break; |
6162 | ||
a0d0e21e | 6163 | case OP_CONST: |
7a52d87a GS |
6164 | if (cSVOPo->op_private & OPpCONST_STRICT) |
6165 | no_bareword_allowed(o); | |
7766f137 GS |
6166 | #ifdef USE_ITHREADS |
6167 | /* Relocate sv to the pad for thread safety. | |
6168 | * Despite being a "constant", the SV is written to, | |
6169 | * for reference counts, sv_upgrade() etc. */ | |
6170 | if (cSVOP->op_sv) { | |
6171 | PADOFFSET ix = pad_alloc(OP_CONST, SVs_PADTMP); | |
6172 | SvREFCNT_dec(PL_curpad[ix]); | |
6173 | SvPADTMP_on(cSVOPo->op_sv); | |
6174 | PL_curpad[ix] = cSVOPo->op_sv; | |
6175 | cSVOPo->op_sv = Nullsv; | |
6176 | o->op_targ = ix; | |
6177 | } | |
6178 | #endif | |
7a52d87a | 6179 | /* FALL THROUGH */ |
a0d0e21e LW |
6180 | case OP_UC: |
6181 | case OP_UCFIRST: | |
6182 | case OP_LC: | |
6183 | case OP_LCFIRST: | |
ed7ab888 GS |
6184 | case OP_CONCAT: |
6185 | case OP_JOIN: | |
a0d0e21e | 6186 | case OP_QUOTEMETA: |
b162f9ea IZ |
6187 | if (o->op_next && o->op_next->op_type == OP_STRINGIFY) { |
6188 | if (o->op_next->op_private & OPpTARGET_MY) { | |
69b47968 | 6189 | if (o->op_flags & OPf_STACKED) /* chained concats */ |
b162f9ea | 6190 | goto ignore_optimization; |
cd06dffe | 6191 | else { |
b162f9ea | 6192 | o->op_targ = o->op_next->op_targ; |
743e66e6 | 6193 | o->op_next->op_targ = 0; |
2c2d71f5 | 6194 | o->op_private |= OPpTARGET_MY; |
b162f9ea IZ |
6195 | } |
6196 | } | |
a0d0e21e | 6197 | null(o->op_next); |
b162f9ea IZ |
6198 | } |
6199 | ignore_optimization: | |
3280af22 | 6200 | o->op_seq = PL_op_seqmax++; |
a0d0e21e | 6201 | break; |
8990e307 | 6202 | case OP_STUB: |
54310121 | 6203 | if ((o->op_flags & OPf_WANT) != OPf_WANT_LIST) { |
3280af22 | 6204 | o->op_seq = PL_op_seqmax++; |
54310121 | 6205 | break; /* Scalar stub must produce undef. List stub is noop */ |
8990e307 | 6206 | } |
748a9306 | 6207 | goto nothin; |
79072805 | 6208 | case OP_NULL: |
acb36ea4 GS |
6209 | if (o->op_targ == OP_NEXTSTATE |
6210 | || o->op_targ == OP_DBSTATE | |
6211 | || o->op_targ == OP_SETSTATE) | |
6212 | { | |
3280af22 | 6213 | PL_curcop = ((COP*)o); |
acb36ea4 | 6214 | } |
748a9306 | 6215 | goto nothin; |
79072805 | 6216 | case OP_SCALAR: |
93a17b20 | 6217 | case OP_LINESEQ: |
463ee0b2 | 6218 | case OP_SCOPE: |
748a9306 | 6219 | nothin: |
a0d0e21e LW |
6220 | if (oldop && o->op_next) { |
6221 | oldop->op_next = o->op_next; | |
79072805 LW |
6222 | continue; |
6223 | } | |
3280af22 | 6224 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
6225 | break; |
6226 | ||
6227 | case OP_GV: | |
a0d0e21e | 6228 | if (o->op_next->op_type == OP_RV2SV) { |
5f05dabc | 6229 | if (!(o->op_next->op_private & OPpDEREF)) { |
a0d0e21e LW |
6230 | null(o->op_next); |
6231 | o->op_private |= o->op_next->op_private & OPpLVAL_INTRO; | |
6232 | o->op_next = o->op_next->op_next; | |
6233 | o->op_type = OP_GVSV; | |
22c35a8c | 6234 | o->op_ppaddr = PL_ppaddr[OP_GVSV]; |
8990e307 LW |
6235 | } |
6236 | } | |
a0d0e21e LW |
6237 | else if (o->op_next->op_type == OP_RV2AV) { |
6238 | OP* pop = o->op_next->op_next; | |
6239 | IV i; | |
8990e307 | 6240 | if (pop->op_type == OP_CONST && |
533c011a | 6241 | (PL_op = pop->op_next) && |
8990e307 | 6242 | pop->op_next->op_type == OP_AELEM && |
a0d0e21e | 6243 | !(pop->op_next->op_private & |
68dc0745 | 6244 | (OPpLVAL_INTRO|OPpLVAL_DEFER|OPpDEREF)) && |
3280af22 | 6245 | (i = SvIV(((SVOP*)pop)->op_sv) - PL_compiling.cop_arybase) |
a0d0e21e | 6246 | <= 255 && |
8990e307 LW |
6247 | i >= 0) |
6248 | { | |
350de78d | 6249 | GV *gv; |
a0d0e21e | 6250 | null(o->op_next); |
8990e307 LW |
6251 | null(pop->op_next); |
6252 | null(pop); | |
a0d0e21e LW |
6253 | o->op_flags |= pop->op_next->op_flags & OPf_MOD; |
6254 | o->op_next = pop->op_next->op_next; | |
6255 | o->op_type = OP_AELEMFAST; | |
22c35a8c | 6256 | o->op_ppaddr = PL_ppaddr[OP_AELEMFAST]; |
a0d0e21e | 6257 | o->op_private = (U8)i; |
638eceb6 | 6258 | gv = cGVOPo_gv; |
350de78d | 6259 | GvAVn(gv); |
8990e307 | 6260 | } |
79072805 | 6261 | } |
76cd736e | 6262 | else if ((o->op_private & OPpEARLY_CV) && ckWARN(WARN_UNSAFE)) { |
638eceb6 | 6263 | GV *gv = cGVOPo_gv; |
76cd736e GS |
6264 | if (SvTYPE(gv) == SVt_PVGV && GvCV(gv) && SvPVX(GvCV(gv))) { |
6265 | /* XXX could check prototype here instead of just carping */ | |
6266 | SV *sv = sv_newmortal(); | |
6267 | gv_efullname3(sv, gv, Nullch); | |
6268 | Perl_warner(aTHX_ WARN_UNSAFE, | |
6269 | "%s() called too early to check prototype", | |
6270 | SvPV_nolen(sv)); | |
6271 | } | |
6272 | } | |
6273 | ||
3280af22 | 6274 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
6275 | break; |
6276 | ||
a0d0e21e | 6277 | case OP_MAPWHILE: |
79072805 LW |
6278 | case OP_GREPWHILE: |
6279 | case OP_AND: | |
6280 | case OP_OR: | |
2c2d71f5 JH |
6281 | case OP_ANDASSIGN: |
6282 | case OP_ORASSIGN: | |
1a67a97c SM |
6283 | case OP_COND_EXPR: |
6284 | case OP_RANGE: | |
3280af22 | 6285 | o->op_seq = PL_op_seqmax++; |
fd4d1407 IZ |
6286 | while (cLOGOP->op_other->op_type == OP_NULL) |
6287 | cLOGOP->op_other = cLOGOP->op_other->op_next; | |
79072805 LW |
6288 | peep(cLOGOP->op_other); |
6289 | break; | |
6290 | ||
79072805 | 6291 | case OP_ENTERLOOP: |
3280af22 | 6292 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
6293 | peep(cLOOP->op_redoop); |
6294 | peep(cLOOP->op_nextop); | |
6295 | peep(cLOOP->op_lastop); | |
6296 | break; | |
6297 | ||
8782bef2 | 6298 | case OP_QR: |
79072805 LW |
6299 | case OP_MATCH: |
6300 | case OP_SUBST: | |
3280af22 | 6301 | o->op_seq = PL_op_seqmax++; |
a0d0e21e | 6302 | peep(cPMOP->op_pmreplstart); |
79072805 LW |
6303 | break; |
6304 | ||
a0d0e21e | 6305 | case OP_EXEC: |
3280af22 | 6306 | o->op_seq = PL_op_seqmax++; |
599cee73 PM |
6307 | if (ckWARN(WARN_SYNTAX) && o->op_next |
6308 | && o->op_next->op_type == OP_NEXTSTATE) { | |
a0d0e21e | 6309 | if (o->op_next->op_sibling && |
20408e3c GS |
6310 | o->op_next->op_sibling->op_type != OP_EXIT && |
6311 | o->op_next->op_sibling->op_type != OP_WARN && | |
a0d0e21e | 6312 | o->op_next->op_sibling->op_type != OP_DIE) { |
57843af0 | 6313 | line_t oldline = CopLINE(PL_curcop); |
a0d0e21e | 6314 | |
57843af0 | 6315 | CopLINE_set(PL_curcop, CopLINE((COP*)o->op_next)); |
cea2e8a9 GS |
6316 | Perl_warner(aTHX_ WARN_SYNTAX, "Statement unlikely to be reached"); |
6317 | Perl_warner(aTHX_ WARN_SYNTAX, "(Maybe you meant system() when you said exec()?)\n"); | |
57843af0 | 6318 | CopLINE_set(PL_curcop, oldline); |
a0d0e21e LW |
6319 | } |
6320 | } | |
6321 | break; | |
aeea060c | 6322 | |
c750a3ec MB |
6323 | case OP_HELEM: { |
6324 | UNOP *rop; | |
6325 | SV *lexname; | |
6326 | GV **fields; | |
6327 | SV **svp, **indsvp; | |
6328 | I32 ind; | |
6329 | char *key; | |
6330 | STRLEN keylen; | |
aeea060c | 6331 | |
377b21bb | 6332 | if ((o->op_private & (OPpLVAL_INTRO)) |
c750a3ec MB |
6333 | || ((BINOP*)o)->op_last->op_type != OP_CONST) |
6334 | break; | |
6335 | rop = (UNOP*)((BINOP*)o)->op_first; | |
6336 | if (rop->op_type != OP_RV2HV || rop->op_first->op_type != OP_PADSV) | |
6337 | break; | |
3280af22 | 6338 | lexname = *av_fetch(PL_comppad_name, rop->op_first->op_targ, TRUE); |
c750a3ec MB |
6339 | if (!SvOBJECT(lexname)) |
6340 | break; | |
5196be3e | 6341 | fields = (GV**)hv_fetch(SvSTASH(lexname), "FIELDS", 6, FALSE); |
c750a3ec MB |
6342 | if (!fields || !GvHV(*fields)) |
6343 | break; | |
638eceb6 | 6344 | svp = cSVOPx_svp(((BINOP*)o)->op_last); |
c750a3ec MB |
6345 | key = SvPV(*svp, keylen); |
6346 | indsvp = hv_fetch(GvHV(*fields), key, keylen, FALSE); | |
6347 | if (!indsvp) { | |
88e9b055 | 6348 | Perl_croak(aTHX_ "No such pseudo-hash field \"%s\" in variable %s of type %s", |
2d8e6c8d | 6349 | key, SvPV(lexname, n_a), HvNAME(SvSTASH(lexname))); |
c750a3ec MB |
6350 | } |
6351 | ind = SvIV(*indsvp); | |
6352 | if (ind < 1) | |
cea2e8a9 | 6353 | Perl_croak(aTHX_ "Bad index while coercing array into hash"); |
c750a3ec | 6354 | rop->op_type = OP_RV2AV; |
22c35a8c | 6355 | rop->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
c750a3ec | 6356 | o->op_type = OP_AELEM; |
22c35a8c | 6357 | o->op_ppaddr = PL_ppaddr[OP_AELEM]; |
c750a3ec MB |
6358 | SvREFCNT_dec(*svp); |
6359 | *svp = newSViv(ind); | |
6360 | break; | |
6361 | } | |
6362 | ||
cd06dffe GS |
6363 | case OP_RV2AV: |
6364 | case OP_RV2HV: | |
6365 | if (!(o->op_flags & OPf_WANT) | |
e1f15930 GS |
6366 | || (o->op_flags & OPf_WANT) == OPf_WANT_LIST) |
6367 | { | |
cd06dffe | 6368 | last_composite = o; |
e1f15930 | 6369 | } |
cd06dffe GS |
6370 | o->op_seq = PL_op_seqmax++; |
6371 | break; | |
6372 | ||
6373 | case OP_RETURN: | |
970c4905 | 6374 | if (o->op_next && o->op_next->op_type != OP_LEAVESUBLV) { |
cd06dffe GS |
6375 | o->op_seq = PL_op_seqmax++; |
6376 | break; | |
6377 | } | |
6378 | /* FALL THROUGH */ | |
6379 | ||
6380 | case OP_LEAVESUBLV: | |
6381 | if (last_composite) { | |
6382 | OP *r = last_composite; | |
6383 | ||
6384 | while (r->op_sibling) | |
6385 | r = r->op_sibling; | |
6386 | if (r->op_next == o | |
6387 | || (r->op_next->op_type == OP_LIST | |
6388 | && r->op_next->op_next == o)) | |
6389 | { | |
6390 | if (last_composite->op_type == OP_RV2AV) | |
6391 | yyerror("Lvalue subs returning arrays not implemented yet"); | |
6392 | else | |
6393 | yyerror("Lvalue subs returning hashes not implemented yet"); | |
6394 | ; | |
6395 | } | |
6396 | } | |
6397 | /* FALL THROUGH */ | |
6398 | ||
79072805 | 6399 | default: |
3280af22 | 6400 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
6401 | break; |
6402 | } | |
a0d0e21e | 6403 | oldop = o; |
79072805 | 6404 | } |
a0d0e21e | 6405 | LEAVE; |
79072805 | 6406 | } |