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 NIS |
23 | /* #define PL_OP_SLAB_ALLOC */ |
24 | ||
25 | #ifdef PL_OP_SLAB_ALLOC | |
26 | #define SLAB_SIZE 8192 | |
27 | static char *PL_OpPtr = NULL; | |
28 | static int PL_OpSpace = 0; | |
29 | #define NewOp(m,var,c,type) do { if ((PL_OpSpace -= c*sizeof(type)) >= 0) \ | |
30 | var = (type *)(PL_OpPtr -= c*sizeof(type)); \ | |
31 | else \ | |
32 | var = (type *) Slab_Alloc(m,c*sizeof(type)); \ | |
33 | } while (0) | |
34 | ||
864dbfa3 | 35 | STATIC void * |
cea2e8a9 | 36 | S_Slab_Alloc(pTHX_ int m, size_t sz) |
b7dc083c NIS |
37 | { |
38 | Newz(m,PL_OpPtr,SLAB_SIZE,char); | |
39 | PL_OpSpace = SLAB_SIZE - sz; | |
40 | return PL_OpPtr += PL_OpSpace; | |
41 | } | |
76e3520e | 42 | |
b7dc083c NIS |
43 | #else |
44 | #define NewOp(m, var, c, type) Newz(m, var, c, type) | |
45 | #endif | |
e50aee73 | 46 | /* |
5dc0d613 | 47 | * In the following definition, the ", Nullop" is just to make the compiler |
a5f75d66 | 48 | * think the expression is of the right type: croak actually does a Siglongjmp. |
e50aee73 | 49 | */ |
11343788 | 50 | #define CHECKOP(type,o) \ |
3280af22 | 51 | ((PL_op_mask && PL_op_mask[type]) \ |
5dc0d613 | 52 | ? ( op_free((OP*)o), \ |
cea2e8a9 | 53 | Perl_croak(aTHX_ "%s trapped by operation mask", PL_op_desc[type]), \ |
28757baa | 54 | Nullop ) \ |
fc0dc3b3 | 55 | : CALL_FPTR(PL_check[type])(aTHX_ (OP*)o)) |
e50aee73 | 56 | |
c53d7c7d HS |
57 | #define PAD_MAX 999999999 |
58 | ||
76e3520e | 59 | STATIC char* |
cea2e8a9 | 60 | S_gv_ename(pTHX_ GV *gv) |
4633a7c4 | 61 | { |
2d8e6c8d | 62 | STRLEN n_a; |
4633a7c4 | 63 | SV* tmpsv = sv_newmortal(); |
46fc3d4c | 64 | gv_efullname3(tmpsv, gv, Nullch); |
2d8e6c8d | 65 | return SvPV(tmpsv,n_a); |
4633a7c4 LW |
66 | } |
67 | ||
76e3520e | 68 | STATIC OP * |
cea2e8a9 | 69 | S_no_fh_allowed(pTHX_ OP *o) |
79072805 | 70 | { |
cea2e8a9 | 71 | yyerror(Perl_form(aTHX_ "Missing comma after first argument to %s function", |
22c35a8c | 72 | PL_op_desc[o->op_type])); |
11343788 | 73 | return o; |
79072805 LW |
74 | } |
75 | ||
76e3520e | 76 | STATIC OP * |
cea2e8a9 | 77 | S_too_few_arguments(pTHX_ OP *o, char *name) |
79072805 | 78 | { |
cea2e8a9 | 79 | yyerror(Perl_form(aTHX_ "Not enough arguments for %s", name)); |
11343788 | 80 | return o; |
79072805 LW |
81 | } |
82 | ||
76e3520e | 83 | STATIC OP * |
cea2e8a9 | 84 | S_too_many_arguments(pTHX_ OP *o, char *name) |
79072805 | 85 | { |
cea2e8a9 | 86 | yyerror(Perl_form(aTHX_ "Too many arguments for %s", name)); |
11343788 | 87 | return o; |
79072805 LW |
88 | } |
89 | ||
76e3520e | 90 | STATIC void |
cea2e8a9 | 91 | S_bad_type(pTHX_ I32 n, char *t, char *name, OP *kid) |
8990e307 | 92 | { |
cea2e8a9 | 93 | yyerror(Perl_form(aTHX_ "Type of arg %d to %s must be %s (not %s)", |
22c35a8c | 94 | (int)n, name, t, PL_op_desc[kid->op_type])); |
8990e307 LW |
95 | } |
96 | ||
7a52d87a | 97 | STATIC void |
cea2e8a9 | 98 | S_no_bareword_allowed(pTHX_ OP *o) |
7a52d87a | 99 | { |
5a844595 GS |
100 | qerror(Perl_mess(aTHX_ |
101 | "Bareword \"%s\" not allowed while \"strict subs\" in use", | |
102 | SvPV_nolen(cSVOPo->op_sv))); | |
7a52d87a GS |
103 | } |
104 | ||
79072805 LW |
105 | /* "register" allocation */ |
106 | ||
107 | PADOFFSET | |
864dbfa3 | 108 | Perl_pad_allocmy(pTHX_ char *name) |
93a17b20 | 109 | { |
11343788 | 110 | dTHR; |
a0d0e21e LW |
111 | PADOFFSET off; |
112 | SV *sv; | |
113 | ||
834a4ddd | 114 | if (!( |
77ca0c92 | 115 | PL_in_my == KEY_our || |
834a4ddd LW |
116 | isALPHA(name[1]) || |
117 | (PL_hints & HINT_UTF8 && (name[1] & 0xc0) == 0xc0) || | |
77ca0c92 | 118 | name[1] == '_' && (int)strlen(name) > 2 )) |
834a4ddd | 119 | { |
c4d0567e | 120 | if (!isPRINT(name[1]) || strchr("\t\n\r\f", name[1])) { |
2b92dfce GS |
121 | /* 1999-02-27 mjd@plover.com */ |
122 | char *p; | |
123 | p = strchr(name, '\0'); | |
124 | /* The next block assumes the buffer is at least 205 chars | |
125 | long. At present, it's always at least 256 chars. */ | |
126 | if (p-name > 200) { | |
127 | strcpy(name+200, "..."); | |
128 | p = name+199; | |
129 | } | |
130 | else { | |
131 | p[1] = '\0'; | |
132 | } | |
133 | /* Move everything else down one character */ | |
134 | for (; p-name > 2; p--) | |
135 | *p = *(p-1); | |
46fc3d4c | 136 | name[2] = toCTRL(name[1]); |
137 | name[1] = '^'; | |
138 | } | |
cea2e8a9 | 139 | yyerror(Perl_form(aTHX_ "Can't use global %s in \"my\"",name)); |
a0d0e21e | 140 | } |
599cee73 | 141 | if (ckWARN(WARN_UNSAFE) && AvFILLp(PL_comppad_name) >= 0) { |
3280af22 NIS |
142 | SV **svp = AvARRAY(PL_comppad_name); |
143 | for (off = AvFILLp(PL_comppad_name); off > PL_comppad_name_floor; off--) { | |
b1cb66bf | 144 | if ((sv = svp[off]) |
3280af22 | 145 | && sv != &PL_sv_undef |
c53d7c7d | 146 | && (SvIVX(sv) == PAD_MAX || SvIVX(sv) == 0) |
b1cb66bf | 147 | && strEQ(name, SvPVX(sv))) |
148 | { | |
cea2e8a9 | 149 | Perl_warner(aTHX_ WARN_UNSAFE, |
77ca0c92 LW |
150 | "\"%s\" variable %s masks earlier declaration in same %s", |
151 | (PL_in_my == KEY_our ? "our" : "my"), | |
152 | name, | |
153 | (SvIVX(sv) == PAD_MAX ? "scope" : "statement")); | |
b1cb66bf | 154 | break; |
155 | } | |
156 | } | |
157 | } | |
a0d0e21e LW |
158 | off = pad_alloc(OP_PADSV, SVs_PADMY); |
159 | sv = NEWSV(1102,0); | |
93a17b20 LW |
160 | sv_upgrade(sv, SVt_PVNV); |
161 | sv_setpv(sv, name); | |
3280af22 | 162 | if (PL_in_my_stash) { |
c750a3ec | 163 | if (*name != '$') |
cea2e8a9 | 164 | yyerror(Perl_form(aTHX_ "Can't declare class for non-scalar %s in \"my\"", |
dce40276 | 165 | name)); |
c750a3ec MB |
166 | SvOBJECT_on(sv); |
167 | (void)SvUPGRADE(sv, SVt_PVMG); | |
3280af22 NIS |
168 | SvSTASH(sv) = (HV*)SvREFCNT_inc(PL_in_my_stash); |
169 | PL_sv_objcount++; | |
c750a3ec | 170 | } |
77ca0c92 LW |
171 | if (PL_in_my == KEY_our) |
172 | SvFLAGS(sv) |= SVpad_OUR; | |
3280af22 | 173 | av_store(PL_comppad_name, off, sv); |
65202027 | 174 | SvNVX(sv) = (NV)PAD_MAX; |
8990e307 | 175 | SvIVX(sv) = 0; /* Not yet introduced--see newSTATEOP */ |
3280af22 NIS |
176 | if (!PL_min_intro_pending) |
177 | PL_min_intro_pending = off; | |
178 | PL_max_intro_pending = off; | |
93a17b20 | 179 | if (*name == '@') |
3280af22 | 180 | av_store(PL_comppad, off, (SV*)newAV()); |
93a17b20 | 181 | else if (*name == '%') |
3280af22 NIS |
182 | av_store(PL_comppad, off, (SV*)newHV()); |
183 | SvPADMY_on(PL_curpad[off]); | |
93a17b20 LW |
184 | return off; |
185 | } | |
186 | ||
2680586e GS |
187 | #define FINDLEX_NOSEARCH 1 /* don't search outer contexts */ |
188 | ||
76e3520e | 189 | STATIC PADOFFSET |
cea2e8a9 | 190 | S_pad_findlex(pTHX_ char *name, PADOFFSET newoff, U32 seq, CV* startcv, |
864dbfa3 | 191 | I32 cx_ix, I32 saweval, U32 flags) |
93a17b20 | 192 | { |
11343788 | 193 | dTHR; |
748a9306 | 194 | CV *cv; |
93a17b20 LW |
195 | I32 off; |
196 | SV *sv; | |
93a17b20 | 197 | register I32 i; |
c09156bb | 198 | register PERL_CONTEXT *cx; |
93a17b20 | 199 | |
748a9306 | 200 | for (cv = startcv; cv; cv = CvOUTSIDE(cv)) { |
4fdae800 | 201 | AV *curlist = CvPADLIST(cv); |
202 | SV **svp = av_fetch(curlist, 0, FALSE); | |
748a9306 | 203 | AV *curname; |
4fdae800 | 204 | |
3280af22 | 205 | if (!svp || *svp == &PL_sv_undef) |
4633a7c4 | 206 | continue; |
748a9306 LW |
207 | curname = (AV*)*svp; |
208 | svp = AvARRAY(curname); | |
93965878 | 209 | for (off = AvFILLp(curname); off > 0; off--) { |
748a9306 | 210 | if ((sv = svp[off]) && |
3280af22 | 211 | sv != &PL_sv_undef && |
748a9306 | 212 | seq <= SvIVX(sv) && |
13826f2c | 213 | seq > I_32(SvNVX(sv)) && |
748a9306 LW |
214 | strEQ(SvPVX(sv), name)) |
215 | { | |
5f05dabc | 216 | I32 depth; |
217 | AV *oldpad; | |
218 | SV *oldsv; | |
219 | ||
220 | depth = CvDEPTH(cv); | |
221 | if (!depth) { | |
9607fc9c | 222 | if (newoff) { |
223 | if (SvFAKE(sv)) | |
224 | continue; | |
4fdae800 | 225 | return 0; /* don't clone from inactive stack frame */ |
9607fc9c | 226 | } |
5f05dabc | 227 | depth = 1; |
228 | } | |
229 | oldpad = (AV*)*av_fetch(curlist, depth, FALSE); | |
230 | oldsv = *av_fetch(oldpad, off, TRUE); | |
748a9306 | 231 | if (!newoff) { /* Not a mere clone operation. */ |
9607fc9c | 232 | SV *namesv = NEWSV(1103,0); |
748a9306 | 233 | newoff = pad_alloc(OP_PADSV, SVs_PADMY); |
9607fc9c | 234 | sv_upgrade(namesv, SVt_PVNV); |
235 | sv_setpv(namesv, name); | |
3280af22 | 236 | av_store(PL_comppad_name, newoff, namesv); |
65202027 | 237 | SvNVX(namesv) = (NV)PL_curcop->cop_seq; |
c53d7c7d | 238 | SvIVX(namesv) = PAD_MAX; /* A ref, intro immediately */ |
9607fc9c | 239 | SvFAKE_on(namesv); /* A ref, not a real var */ |
77ca0c92 LW |
240 | if (SvFLAGS(sv) & SVpad_OUR)/* An "our" variable */ |
241 | SvFLAGS(namesv) |= SVpad_OUR; | |
87671ffc | 242 | if (SvOBJECT(sv)) { /* A typed var */ |
3d93dc8b GS |
243 | SvOBJECT_on(namesv); |
244 | (void)SvUPGRADE(namesv, SVt_PVMG); | |
87671ffc | 245 | SvSTASH(namesv) = (HV*)SvREFCNT_inc((SV*)SvSTASH(sv)); |
3d93dc8b GS |
246 | PL_sv_objcount++; |
247 | } | |
3280af22 | 248 | if (CvANON(PL_compcv) || SvTYPE(PL_compcv) == SVt_PVFM) { |
28757baa | 249 | /* "It's closures all the way down." */ |
3280af22 | 250 | CvCLONE_on(PL_compcv); |
54310121 | 251 | if (cv == startcv) { |
3280af22 | 252 | if (CvANON(PL_compcv)) |
54310121 | 253 | oldsv = Nullsv; /* no need to keep ref */ |
254 | } | |
255 | else { | |
28757baa | 256 | CV *bcv; |
257 | for (bcv = startcv; | |
258 | bcv && bcv != cv && !CvCLONE(bcv); | |
6b35e009 GS |
259 | bcv = CvOUTSIDE(bcv)) |
260 | { | |
28757baa | 261 | if (CvANON(bcv)) |
262 | CvCLONE_on(bcv); | |
263 | else { | |
6b35e009 GS |
264 | if (ckWARN(WARN_CLOSURE) |
265 | && !CvUNIQUE(bcv) && !CvUNIQUE(cv)) | |
266 | { | |
cea2e8a9 | 267 | Perl_warner(aTHX_ WARN_CLOSURE, |
44a8e56a | 268 | "Variable \"%s\" may be unavailable", |
28757baa | 269 | name); |
6b35e009 | 270 | } |
28757baa | 271 | break; |
272 | } | |
273 | } | |
274 | } | |
275 | } | |
3280af22 | 276 | else if (!CvUNIQUE(PL_compcv)) { |
599cee73 | 277 | if (ckWARN(WARN_CLOSURE) && !SvFAKE(sv) && !CvUNIQUE(cv)) |
cea2e8a9 | 278 | Perl_warner(aTHX_ WARN_CLOSURE, |
599cee73 | 279 | "Variable \"%s\" will not stay shared", name); |
5f05dabc | 280 | } |
748a9306 | 281 | } |
3280af22 | 282 | av_store(PL_comppad, newoff, SvREFCNT_inc(oldsv)); |
748a9306 LW |
283 | return newoff; |
284 | } | |
93a17b20 LW |
285 | } |
286 | } | |
287 | ||
2680586e GS |
288 | if (flags & FINDLEX_NOSEARCH) |
289 | return 0; | |
290 | ||
93a17b20 LW |
291 | /* Nothing in current lexical context--try eval's context, if any. |
292 | * This is necessary to let the perldb get at lexically scoped variables. | |
293 | * XXX This will also probably interact badly with eval tree caching. | |
294 | */ | |
295 | ||
748a9306 | 296 | for (i = cx_ix; i >= 0; i--) { |
93a17b20 | 297 | cx = &cxstack[i]; |
6b35e009 | 298 | switch (CxTYPE(cx)) { |
93a17b20 | 299 | default: |
748a9306 LW |
300 | if (i == 0 && saweval) { |
301 | seq = cxstack[saweval].blk_oldcop->cop_seq; | |
2680586e | 302 | return pad_findlex(name, newoff, seq, PL_main_cv, -1, saweval, 0); |
748a9306 | 303 | } |
93a17b20 LW |
304 | break; |
305 | case CXt_EVAL: | |
44a8e56a | 306 | switch (cx->blk_eval.old_op_type) { |
307 | case OP_ENTEREVAL: | |
6b35e009 GS |
308 | if (CxREALEVAL(cx)) |
309 | saweval = i; | |
44a8e56a | 310 | break; |
311 | case OP_REQUIRE: | |
312 | /* require must have its own scope */ | |
313 | return 0; | |
314 | } | |
93a17b20 LW |
315 | break; |
316 | case CXt_SUB: | |
317 | if (!saweval) | |
318 | return 0; | |
319 | cv = cx->blk_sub.cv; | |
3280af22 | 320 | if (PL_debstash && CvSTASH(cv) == PL_debstash) { /* ignore DB'* scope */ |
748a9306 | 321 | saweval = i; /* so we know where we were called from */ |
93a17b20 | 322 | continue; |
93a17b20 | 323 | } |
748a9306 | 324 | seq = cxstack[saweval].blk_oldcop->cop_seq; |
2680586e | 325 | return pad_findlex(name, newoff, seq, cv, i-1, saweval,FINDLEX_NOSEARCH); |
93a17b20 LW |
326 | } |
327 | } | |
328 | ||
748a9306 LW |
329 | return 0; |
330 | } | |
a0d0e21e | 331 | |
748a9306 | 332 | PADOFFSET |
864dbfa3 | 333 | Perl_pad_findmy(pTHX_ char *name) |
748a9306 | 334 | { |
11343788 | 335 | dTHR; |
748a9306 | 336 | I32 off; |
54310121 | 337 | I32 pendoff = 0; |
748a9306 | 338 | SV *sv; |
3280af22 NIS |
339 | SV **svp = AvARRAY(PL_comppad_name); |
340 | U32 seq = PL_cop_seqmax; | |
6b35e009 | 341 | PERL_CONTEXT *cx; |
33b8ce05 | 342 | CV *outside; |
748a9306 | 343 | |
11343788 MB |
344 | #ifdef USE_THREADS |
345 | /* | |
346 | * Special case to get lexical (and hence per-thread) @_. | |
347 | * XXX I need to find out how to tell at parse-time whether use | |
348 | * of @_ should refer to a lexical (from a sub) or defgv (global | |
349 | * scope and maybe weird sub-ish things like formats). See | |
350 | * startsub in perly.y. It's possible that @_ could be lexical | |
351 | * (at least from subs) even in non-threaded perl. | |
352 | */ | |
353 | if (strEQ(name, "@_")) | |
354 | return 0; /* success. (NOT_IN_PAD indicates failure) */ | |
355 | #endif /* USE_THREADS */ | |
356 | ||
748a9306 | 357 | /* The one we're looking for is probably just before comppad_name_fill. */ |
3280af22 | 358 | for (off = AvFILLp(PL_comppad_name); off > 0; off--) { |
a0d0e21e | 359 | if ((sv = svp[off]) && |
3280af22 | 360 | sv != &PL_sv_undef && |
54310121 | 361 | (!SvIVX(sv) || |
362 | (seq <= SvIVX(sv) && | |
363 | seq > I_32(SvNVX(sv)))) && | |
a0d0e21e LW |
364 | strEQ(SvPVX(sv), name)) |
365 | { | |
77ca0c92 | 366 | if (SvIVX(sv) || SvFLAGS(sv) & SVpad_OUR) |
54310121 | 367 | return (PADOFFSET)off; |
368 | pendoff = off; /* this pending def. will override import */ | |
a0d0e21e LW |
369 | } |
370 | } | |
748a9306 | 371 | |
33b8ce05 GS |
372 | outside = CvOUTSIDE(PL_compcv); |
373 | ||
374 | /* Check if if we're compiling an eval'', and adjust seq to be the | |
375 | * eval's seq number. This depends on eval'' having a non-null | |
376 | * CvOUTSIDE() while it is being compiled. The eval'' itself is | |
1aff0e91 GS |
377 | * identified by CvEVAL being true and CvGV being null. */ |
378 | if (outside && CvEVAL(PL_compcv) && !CvGV(PL_compcv) && cxstack_ix >= 0) { | |
6b35e009 GS |
379 | cx = &cxstack[cxstack_ix]; |
380 | if (CxREALEVAL(cx)) | |
381 | seq = cx->blk_oldcop->cop_seq; | |
382 | } | |
383 | ||
748a9306 | 384 | /* See if it's in a nested scope */ |
2680586e | 385 | off = pad_findlex(name, 0, seq, outside, cxstack_ix, 0, 0); |
54310121 | 386 | if (off) { |
387 | /* If there is a pending local definition, this new alias must die */ | |
388 | if (pendoff) | |
3280af22 | 389 | SvIVX(AvARRAY(PL_comppad_name)[off]) = seq; |
11343788 | 390 | return off; /* pad_findlex returns 0 for failure...*/ |
54310121 | 391 | } |
11343788 | 392 | return NOT_IN_PAD; /* ...but we return NOT_IN_PAD for failure */ |
93a17b20 LW |
393 | } |
394 | ||
395 | void | |
864dbfa3 | 396 | Perl_pad_leavemy(pTHX_ I32 fill) |
93a17b20 | 397 | { |
0453d815 | 398 | dTHR; |
93a17b20 | 399 | I32 off; |
3280af22 | 400 | SV **svp = AvARRAY(PL_comppad_name); |
93a17b20 | 401 | SV *sv; |
3280af22 NIS |
402 | if (PL_min_intro_pending && fill < PL_min_intro_pending) { |
403 | for (off = PL_max_intro_pending; off >= PL_min_intro_pending; off--) { | |
0453d815 PM |
404 | if ((sv = svp[off]) && sv != &PL_sv_undef && ckWARN_d(WARN_INTERNAL)) |
405 | Perl_warner(aTHX_ WARN_INTERNAL, "%s never introduced", SvPVX(sv)); | |
8990e307 LW |
406 | } |
407 | } | |
408 | /* "Deintroduce" my variables that are leaving with this scope. */ | |
3280af22 | 409 | for (off = AvFILLp(PL_comppad_name); off > fill; off--) { |
c53d7c7d | 410 | if ((sv = svp[off]) && sv != &PL_sv_undef && SvIVX(sv) == PAD_MAX) |
3280af22 | 411 | SvIVX(sv) = PL_cop_seqmax; |
93a17b20 LW |
412 | } |
413 | } | |
414 | ||
415 | PADOFFSET | |
864dbfa3 | 416 | Perl_pad_alloc(pTHX_ I32 optype, U32 tmptype) |
79072805 | 417 | { |
11343788 | 418 | dTHR; |
79072805 LW |
419 | SV *sv; |
420 | I32 retval; | |
421 | ||
3280af22 | 422 | if (AvARRAY(PL_comppad) != PL_curpad) |
cea2e8a9 | 423 | Perl_croak(aTHX_ "panic: pad_alloc"); |
3280af22 | 424 | if (PL_pad_reset_pending) |
a0d0e21e | 425 | pad_reset(); |
ed6116ce | 426 | if (tmptype & SVs_PADMY) { |
79072805 | 427 | do { |
3280af22 | 428 | sv = *av_fetch(PL_comppad, AvFILLp(PL_comppad) + 1, TRUE); |
ed6116ce | 429 | } while (SvPADBUSY(sv)); /* need a fresh one */ |
3280af22 | 430 | retval = AvFILLp(PL_comppad); |
79072805 LW |
431 | } |
432 | else { | |
3280af22 NIS |
433 | SV **names = AvARRAY(PL_comppad_name); |
434 | SSize_t names_fill = AvFILLp(PL_comppad_name); | |
bbce6d69 | 435 | for (;;) { |
436 | /* | |
437 | * "foreach" index vars temporarily become aliases to non-"my" | |
438 | * values. Thus we must skip, not just pad values that are | |
439 | * marked as current pad values, but also those with names. | |
440 | */ | |
3280af22 NIS |
441 | if (++PL_padix <= names_fill && |
442 | (sv = names[PL_padix]) && sv != &PL_sv_undef) | |
bbce6d69 | 443 | continue; |
3280af22 | 444 | sv = *av_fetch(PL_comppad, PL_padix, TRUE); |
bbce6d69 | 445 | if (!(SvFLAGS(sv) & (SVs_PADTMP|SVs_PADMY))) |
446 | break; | |
447 | } | |
3280af22 | 448 | retval = PL_padix; |
79072805 | 449 | } |
8990e307 | 450 | SvFLAGS(sv) |= tmptype; |
3280af22 | 451 | PL_curpad = AvARRAY(PL_comppad); |
11343788 | 452 | #ifdef USE_THREADS |
5dc0d613 | 453 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx alloc %ld for %s\n", |
533c011a | 454 | (unsigned long) thr, (unsigned long) PL_curpad, |
22c35a8c | 455 | (long) retval, PL_op_name[optype])); |
11343788 | 456 | #else |
d9bb4600 | 457 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx alloc %ld for %s\n", |
3280af22 | 458 | (unsigned long) PL_curpad, |
22c35a8c | 459 | (long) retval, PL_op_name[optype])); |
11343788 | 460 | #endif /* USE_THREADS */ |
79072805 LW |
461 | return (PADOFFSET)retval; |
462 | } | |
463 | ||
464 | SV * | |
864dbfa3 | 465 | Perl_pad_sv(pTHX_ PADOFFSET po) |
79072805 | 466 | { |
11343788 MB |
467 | dTHR; |
468 | #ifdef USE_THREADS | |
5dc0d613 | 469 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx sv %d\n", |
533c011a | 470 | (unsigned long) thr, (unsigned long) PL_curpad, po)); |
11343788 | 471 | #else |
79072805 | 472 | if (!po) |
cea2e8a9 | 473 | Perl_croak(aTHX_ "panic: pad_sv po"); |
d9bb4600 | 474 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx sv %d\n", |
3280af22 | 475 | (unsigned long) PL_curpad, po)); |
11343788 | 476 | #endif /* USE_THREADS */ |
3280af22 | 477 | return PL_curpad[po]; /* eventually we'll turn this into a macro */ |
79072805 LW |
478 | } |
479 | ||
480 | void | |
864dbfa3 | 481 | Perl_pad_free(pTHX_ PADOFFSET po) |
79072805 | 482 | { |
11343788 | 483 | dTHR; |
3280af22 | 484 | if (!PL_curpad) |
a0d0e21e | 485 | return; |
3280af22 | 486 | if (AvARRAY(PL_comppad) != PL_curpad) |
cea2e8a9 | 487 | Perl_croak(aTHX_ "panic: pad_free curpad"); |
79072805 | 488 | if (!po) |
cea2e8a9 | 489 | Perl_croak(aTHX_ "panic: pad_free po"); |
11343788 | 490 | #ifdef USE_THREADS |
5dc0d613 | 491 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx free %d\n", |
533c011a | 492 | (unsigned long) thr, (unsigned long) PL_curpad, po)); |
11343788 | 493 | #else |
d9bb4600 | 494 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx free %d\n", |
3280af22 | 495 | (unsigned long) PL_curpad, po)); |
11343788 | 496 | #endif /* USE_THREADS */ |
3280af22 NIS |
497 | if (PL_curpad[po] && PL_curpad[po] != &PL_sv_undef) |
498 | SvPADTMP_off(PL_curpad[po]); | |
499 | if ((I32)po < PL_padix) | |
500 | PL_padix = po - 1; | |
79072805 LW |
501 | } |
502 | ||
503 | void | |
864dbfa3 | 504 | Perl_pad_swipe(pTHX_ PADOFFSET po) |
79072805 | 505 | { |
11343788 | 506 | dTHR; |
3280af22 | 507 | if (AvARRAY(PL_comppad) != PL_curpad) |
cea2e8a9 | 508 | Perl_croak(aTHX_ "panic: pad_swipe curpad"); |
79072805 | 509 | if (!po) |
cea2e8a9 | 510 | Perl_croak(aTHX_ "panic: pad_swipe po"); |
11343788 | 511 | #ifdef USE_THREADS |
5dc0d613 | 512 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx swipe %d\n", |
533c011a | 513 | (unsigned long) thr, (unsigned long) PL_curpad, po)); |
11343788 | 514 | #else |
d9bb4600 | 515 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx swipe %d\n", |
3280af22 | 516 | (unsigned long) PL_curpad, po)); |
11343788 | 517 | #endif /* USE_THREADS */ |
3280af22 NIS |
518 | SvPADTMP_off(PL_curpad[po]); |
519 | PL_curpad[po] = NEWSV(1107,0); | |
520 | SvPADTMP_on(PL_curpad[po]); | |
521 | if ((I32)po < PL_padix) | |
522 | PL_padix = po - 1; | |
79072805 LW |
523 | } |
524 | ||
d9bb4600 GS |
525 | /* XXX pad_reset() is currently disabled because it results in serious bugs. |
526 | * It causes pad temp TARGs to be shared between OPs. Since TARGs are pushed | |
527 | * on the stack by OPs that use them, there are several ways to get an alias | |
528 | * to a shared TARG. Such an alias will change randomly and unpredictably. | |
529 | * We avoid doing this until we can think of a Better Way. | |
530 | * GSAR 97-10-29 */ | |
79072805 | 531 | void |
864dbfa3 | 532 | Perl_pad_reset(pTHX) |
79072805 | 533 | { |
d9bb4600 | 534 | #ifdef USE_BROKEN_PAD_RESET |
11343788 | 535 | dTHR; |
79072805 LW |
536 | register I32 po; |
537 | ||
6b88bc9c | 538 | if (AvARRAY(PL_comppad) != PL_curpad) |
cea2e8a9 | 539 | Perl_croak(aTHX_ "panic: pad_reset curpad"); |
11343788 | 540 | #ifdef USE_THREADS |
5dc0d613 | 541 | DEBUG_X(PerlIO_printf(Perl_debug_log, "0x%lx Pad 0x%lx reset\n", |
6b88bc9c | 542 | (unsigned long) thr, (unsigned long) PL_curpad)); |
11343788 | 543 | #else |
d9bb4600 | 544 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%lx reset\n", |
6b88bc9c | 545 | (unsigned long) PL_curpad)); |
11343788 | 546 | #endif /* USE_THREADS */ |
6b88bc9c GS |
547 | if (!PL_tainting) { /* Can't mix tainted and non-tainted temporaries. */ |
548 | for (po = AvMAX(PL_comppad); po > PL_padix_floor; po--) { | |
549 | if (PL_curpad[po] && !SvIMMORTAL(PL_curpad[po])) | |
550 | SvPADTMP_off(PL_curpad[po]); | |
748a9306 | 551 | } |
6b88bc9c | 552 | PL_padix = PL_padix_floor; |
79072805 | 553 | } |
d9bb4600 | 554 | #endif |
3280af22 | 555 | PL_pad_reset_pending = FALSE; |
79072805 LW |
556 | } |
557 | ||
a863c7d1 | 558 | #ifdef USE_THREADS |
54b9620d | 559 | /* find_threadsv is not reentrant */ |
a863c7d1 | 560 | PADOFFSET |
864dbfa3 | 561 | Perl_find_threadsv(pTHX_ const char *name) |
a863c7d1 MB |
562 | { |
563 | dTHR; | |
564 | char *p; | |
565 | PADOFFSET key; | |
554b3eca | 566 | SV **svp; |
54b9620d | 567 | /* We currently only handle names of a single character */ |
533c011a | 568 | p = strchr(PL_threadsv_names, *name); |
a863c7d1 MB |
569 | if (!p) |
570 | return NOT_IN_PAD; | |
533c011a | 571 | key = p - PL_threadsv_names; |
2d8e6c8d | 572 | MUTEX_LOCK(&thr->mutex); |
54b9620d | 573 | svp = av_fetch(thr->threadsv, key, FALSE); |
2d8e6c8d GS |
574 | if (svp) |
575 | MUTEX_UNLOCK(&thr->mutex); | |
576 | else { | |
554b3eca | 577 | SV *sv = NEWSV(0, 0); |
54b9620d | 578 | av_store(thr->threadsv, key, sv); |
940cb80d | 579 | thr->threadsvp = AvARRAY(thr->threadsv); |
2d8e6c8d | 580 | MUTEX_UNLOCK(&thr->mutex); |
554b3eca MB |
581 | /* |
582 | * Some magic variables used to be automagically initialised | |
583 | * in gv_fetchpv. Those which are now per-thread magicals get | |
584 | * initialised here instead. | |
585 | */ | |
586 | switch (*name) { | |
54b9620d MB |
587 | case '_': |
588 | break; | |
554b3eca MB |
589 | case ';': |
590 | sv_setpv(sv, "\034"); | |
54b9620d | 591 | sv_magic(sv, 0, 0, name, 1); |
554b3eca | 592 | break; |
c277df42 IZ |
593 | case '&': |
594 | case '`': | |
595 | case '\'': | |
533c011a | 596 | PL_sawampersand = TRUE; |
a3f914c5 GS |
597 | /* FALL THROUGH */ |
598 | case '1': | |
599 | case '2': | |
600 | case '3': | |
601 | case '4': | |
602 | case '5': | |
603 | case '6': | |
604 | case '7': | |
605 | case '8': | |
606 | case '9': | |
c277df42 | 607 | SvREADONLY_on(sv); |
d8b5173a | 608 | /* FALL THROUGH */ |
067391ea GS |
609 | |
610 | /* XXX %! tied to Errno.pm needs to be added here. | |
611 | * See gv_fetchpv(). */ | |
612 | /* case '!': */ | |
613 | ||
54b9620d MB |
614 | default: |
615 | sv_magic(sv, 0, 0, name, 1); | |
554b3eca | 616 | } |
bf49b057 | 617 | DEBUG_S(PerlIO_printf(Perl_error_log, |
54b9620d | 618 | "find_threadsv: new SV %p for $%s%c\n", |
554b3eca MB |
619 | sv, (*name < 32) ? "^" : "", |
620 | (*name < 32) ? toCTRL(*name) : *name)); | |
a863c7d1 MB |
621 | } |
622 | return key; | |
623 | } | |
624 | #endif /* USE_THREADS */ | |
625 | ||
79072805 LW |
626 | /* Destructor */ |
627 | ||
628 | void | |
864dbfa3 | 629 | Perl_op_free(pTHX_ OP *o) |
79072805 | 630 | { |
85e6fe83 | 631 | register OP *kid, *nextkid; |
acb36ea4 | 632 | OPCODE type; |
79072805 | 633 | |
5dc0d613 | 634 | if (!o || o->op_seq == (U16)-1) |
79072805 LW |
635 | return; |
636 | ||
11343788 MB |
637 | if (o->op_flags & OPf_KIDS) { |
638 | for (kid = cUNOPo->op_first; kid; kid = nextkid) { | |
85e6fe83 | 639 | nextkid = kid->op_sibling; /* Get before next freeing kid */ |
79072805 | 640 | op_free(kid); |
85e6fe83 | 641 | } |
79072805 | 642 | } |
acb36ea4 GS |
643 | type = o->op_type; |
644 | if (type == OP_NULL) | |
645 | type = o->op_targ; | |
646 | ||
647 | /* COP* is not cleared by op_clear() so that we may track line | |
648 | * numbers etc even after null() */ | |
649 | if (type == OP_NEXTSTATE || type == OP_SETSTATE || type == OP_DBSTATE) | |
650 | cop_free((COP*)o); | |
651 | ||
652 | op_clear(o); | |
653 | ||
654 | #ifdef PL_OP_SLAB_ALLOC | |
655 | if ((char *) o == PL_OpPtr) | |
656 | { | |
657 | } | |
658 | #else | |
659 | Safefree(o); | |
660 | #endif | |
661 | } | |
79072805 | 662 | |
acb36ea4 GS |
663 | STATIC void |
664 | S_op_clear(pTHX_ OP *o) | |
665 | { | |
11343788 | 666 | switch (o->op_type) { |
acb36ea4 GS |
667 | case OP_NULL: /* Was holding old type, if any. */ |
668 | case OP_ENTEREVAL: /* Was holding hints. */ | |
669 | #ifdef USE_THREADS | |
670 | case OP_THREADSV: /* Was holding index into thr->threadsv AV. */ | |
671 | #endif | |
672 | o->op_targ = 0; | |
a0d0e21e | 673 | break; |
554b3eca | 674 | #ifdef USE_THREADS |
8dd3ba40 SM |
675 | case OP_ENTERITER: |
676 | if (!(o->op_flags & OPf_SPECIAL)) | |
677 | break; | |
678 | /* FALL THROUGH */ | |
554b3eca | 679 | #endif /* USE_THREADS */ |
a6006777 | 680 | default: |
ac4c12e7 | 681 | if (!(o->op_flags & OPf_REF) |
0b94c7bb | 682 | || (PL_check[o->op_type] != MEMBER_TO_FPTR(Perl_ck_ftst))) |
a6006777 | 683 | break; |
684 | /* FALL THROUGH */ | |
463ee0b2 | 685 | case OP_GVSV: |
79072805 | 686 | case OP_GV: |
a6006777 | 687 | case OP_AELEMFAST: |
11343788 | 688 | SvREFCNT_dec(cGVOPo->op_gv); |
acb36ea4 | 689 | cGVOPo->op_gv = Nullgv; |
79072805 LW |
690 | break; |
691 | case OP_CONST: | |
11343788 | 692 | SvREFCNT_dec(cSVOPo->op_sv); |
acb36ea4 | 693 | cSVOPo->op_sv = Nullsv; |
79072805 | 694 | break; |
748a9306 LW |
695 | case OP_GOTO: |
696 | case OP_NEXT: | |
697 | case OP_LAST: | |
698 | case OP_REDO: | |
11343788 | 699 | if (o->op_flags & (OPf_SPECIAL|OPf_STACKED|OPf_KIDS)) |
748a9306 LW |
700 | break; |
701 | /* FALL THROUGH */ | |
a0d0e21e | 702 | case OP_TRANS: |
acb36ea4 | 703 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { |
a0ed51b3 | 704 | SvREFCNT_dec(cSVOPo->op_sv); |
acb36ea4 GS |
705 | cSVOPo->op_sv = Nullsv; |
706 | } | |
707 | else { | |
a0ed51b3 | 708 | Safefree(cPVOPo->op_pv); |
acb36ea4 GS |
709 | cPVOPo->op_pv = Nullch; |
710 | } | |
a0d0e21e LW |
711 | break; |
712 | case OP_SUBST: | |
11343788 | 713 | op_free(cPMOPo->op_pmreplroot); |
acb36ea4 | 714 | cPMOPo->op_pmreplroot = Nullop; |
a0d0e21e | 715 | /* FALL THROUGH */ |
748a9306 | 716 | case OP_PUSHRE: |
a0d0e21e | 717 | case OP_MATCH: |
8782bef2 | 718 | case OP_QR: |
c277df42 | 719 | ReREFCNT_dec(cPMOPo->op_pmregexp); |
acb36ea4 | 720 | cPMOPo->op_pmregexp = (REGEXP*)NULL; |
a0d0e21e | 721 | break; |
79072805 LW |
722 | } |
723 | ||
11343788 MB |
724 | if (o->op_targ > 0) |
725 | pad_free(o->op_targ); | |
79072805 LW |
726 | } |
727 | ||
76e3520e | 728 | STATIC void |
3eb57f73 HS |
729 | S_cop_free(pTHX_ COP* cop) |
730 | { | |
731 | Safefree(cop->cop_label); | |
732 | SvREFCNT_dec(cop->cop_filegv); | |
0453d815 | 733 | if (! specialWARN(cop->cop_warnings)) |
3eb57f73 HS |
734 | SvREFCNT_dec(cop->cop_warnings); |
735 | } | |
736 | ||
737 | STATIC void | |
cea2e8a9 | 738 | S_null(pTHX_ OP *o) |
8990e307 | 739 | { |
acb36ea4 GS |
740 | if (o->op_type == OP_NULL) |
741 | return; | |
742 | op_clear(o); | |
11343788 MB |
743 | o->op_targ = o->op_type; |
744 | o->op_type = OP_NULL; | |
22c35a8c | 745 | o->op_ppaddr = PL_ppaddr[OP_NULL]; |
8990e307 LW |
746 | } |
747 | ||
79072805 LW |
748 | /* Contextualizers */ |
749 | ||
463ee0b2 | 750 | #define LINKLIST(o) ((o)->op_next ? (o)->op_next : linklist((OP*)o)) |
79072805 LW |
751 | |
752 | OP * | |
864dbfa3 | 753 | Perl_linklist(pTHX_ OP *o) |
79072805 LW |
754 | { |
755 | register OP *kid; | |
756 | ||
11343788 MB |
757 | if (o->op_next) |
758 | return o->op_next; | |
79072805 LW |
759 | |
760 | /* establish postfix order */ | |
11343788 MB |
761 | if (cUNOPo->op_first) { |
762 | o->op_next = LINKLIST(cUNOPo->op_first); | |
763 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) { | |
79072805 LW |
764 | if (kid->op_sibling) |
765 | kid->op_next = LINKLIST(kid->op_sibling); | |
766 | else | |
11343788 | 767 | kid->op_next = o; |
79072805 LW |
768 | } |
769 | } | |
770 | else | |
11343788 | 771 | o->op_next = o; |
79072805 | 772 | |
11343788 | 773 | return o->op_next; |
79072805 LW |
774 | } |
775 | ||
776 | OP * | |
864dbfa3 | 777 | Perl_scalarkids(pTHX_ OP *o) |
79072805 LW |
778 | { |
779 | OP *kid; | |
11343788 MB |
780 | if (o && o->op_flags & OPf_KIDS) { |
781 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
79072805 LW |
782 | scalar(kid); |
783 | } | |
11343788 | 784 | return o; |
79072805 LW |
785 | } |
786 | ||
76e3520e | 787 | STATIC OP * |
cea2e8a9 | 788 | S_scalarboolean(pTHX_ OP *o) |
8990e307 | 789 | { |
d008e5eb | 790 | if (o->op_type == OP_SASSIGN && cBINOPo->op_first->op_type == OP_CONST) { |
0f15f207 | 791 | dTHR; |
d008e5eb GS |
792 | if (ckWARN(WARN_SYNTAX)) { |
793 | line_t oldline = PL_curcop->cop_line; | |
a0d0e21e | 794 | |
d008e5eb GS |
795 | if (PL_copline != NOLINE) |
796 | PL_curcop->cop_line = PL_copline; | |
cea2e8a9 | 797 | Perl_warner(aTHX_ WARN_SYNTAX, "Found = in conditional, should be =="); |
d008e5eb GS |
798 | PL_curcop->cop_line = oldline; |
799 | } | |
a0d0e21e | 800 | } |
11343788 | 801 | return scalar(o); |
8990e307 LW |
802 | } |
803 | ||
804 | OP * | |
864dbfa3 | 805 | Perl_scalar(pTHX_ OP *o) |
79072805 LW |
806 | { |
807 | OP *kid; | |
808 | ||
a0d0e21e | 809 | /* assumes no premature commitment */ |
3280af22 | 810 | if (!o || (o->op_flags & OPf_WANT) || PL_error_count |
5dc0d613 | 811 | || o->op_type == OP_RETURN) |
11343788 | 812 | return o; |
79072805 | 813 | |
b162f9ea IZ |
814 | if ((o->op_private & OPpTARGET_MY) |
815 | && (PL_opargs[o->op_type] & OA_TARGLEX)) /* OPp share the meaning */ | |
816 | return scalar(o); /* As if inside SASSIGN */ | |
817 | ||
5dc0d613 | 818 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_SCALAR; |
79072805 | 819 | |
11343788 | 820 | switch (o->op_type) { |
79072805 | 821 | case OP_REPEAT: |
11343788 MB |
822 | if (o->op_private & OPpREPEAT_DOLIST) |
823 | null(((LISTOP*)cBINOPo->op_first)->op_first); | |
824 | scalar(cBINOPo->op_first); | |
8990e307 | 825 | break; |
79072805 LW |
826 | case OP_OR: |
827 | case OP_AND: | |
828 | case OP_COND_EXPR: | |
11343788 | 829 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
8990e307 | 830 | scalar(kid); |
79072805 | 831 | break; |
a0d0e21e | 832 | case OP_SPLIT: |
11343788 | 833 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e LW |
834 | if (!kPMOP->op_pmreplroot) |
835 | deprecate("implicit split to @_"); | |
836 | } | |
837 | /* FALL THROUGH */ | |
79072805 | 838 | case OP_MATCH: |
8782bef2 | 839 | case OP_QR: |
79072805 LW |
840 | case OP_SUBST: |
841 | case OP_NULL: | |
8990e307 | 842 | default: |
11343788 MB |
843 | if (o->op_flags & OPf_KIDS) { |
844 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) | |
8990e307 LW |
845 | scalar(kid); |
846 | } | |
79072805 LW |
847 | break; |
848 | case OP_LEAVE: | |
849 | case OP_LEAVETRY: | |
5dc0d613 | 850 | kid = cLISTOPo->op_first; |
54310121 | 851 | scalar(kid); |
852 | while (kid = kid->op_sibling) { | |
853 | if (kid->op_sibling) | |
854 | scalarvoid(kid); | |
855 | else | |
856 | scalar(kid); | |
857 | } | |
3280af22 | 858 | WITH_THR(PL_curcop = &PL_compiling); |
54310121 | 859 | break; |
748a9306 | 860 | case OP_SCOPE: |
79072805 | 861 | case OP_LINESEQ: |
8990e307 | 862 | case OP_LIST: |
11343788 | 863 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
864 | if (kid->op_sibling) |
865 | scalarvoid(kid); | |
866 | else | |
867 | scalar(kid); | |
868 | } | |
3280af22 | 869 | WITH_THR(PL_curcop = &PL_compiling); |
79072805 LW |
870 | break; |
871 | } | |
11343788 | 872 | return o; |
79072805 LW |
873 | } |
874 | ||
875 | OP * | |
864dbfa3 | 876 | Perl_scalarvoid(pTHX_ OP *o) |
79072805 LW |
877 | { |
878 | OP *kid; | |
8990e307 LW |
879 | char* useless = 0; |
880 | SV* sv; | |
2ebea0a1 GS |
881 | U8 want; |
882 | ||
acb36ea4 GS |
883 | if (o->op_type == OP_NEXTSTATE |
884 | || o->op_type == OP_SETSTATE | |
885 | || o->op_type == OP_DBSTATE | |
886 | || (o->op_type == OP_NULL && (o->op_targ == OP_NEXTSTATE | |
887 | || o->op_targ == OP_SETSTATE | |
888 | || o->op_targ == OP_DBSTATE))) | |
2ebea0a1 GS |
889 | { |
890 | dTHR; | |
891 | PL_curcop = (COP*)o; /* for warning below */ | |
892 | } | |
79072805 | 893 | |
54310121 | 894 | /* assumes no premature commitment */ |
2ebea0a1 GS |
895 | want = o->op_flags & OPf_WANT; |
896 | if ((want && want != OPf_WANT_SCALAR) || PL_error_count | |
5dc0d613 | 897 | || o->op_type == OP_RETURN) |
11343788 | 898 | return o; |
79072805 | 899 | |
b162f9ea IZ |
900 | if ((o->op_private & OPpTARGET_MY) |
901 | && (PL_opargs[o->op_type] & OA_TARGLEX)) /* OPp share the meaning */ | |
902 | return scalar(o); /* As if inside SASSIGN */ | |
903 | ||
5dc0d613 | 904 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_VOID; |
79072805 | 905 | |
11343788 | 906 | switch (o->op_type) { |
79072805 | 907 | default: |
22c35a8c | 908 | if (!(PL_opargs[o->op_type] & OA_FOLDCONST)) |
8990e307 | 909 | break; |
36477c24 | 910 | /* FALL THROUGH */ |
911 | case OP_REPEAT: | |
11343788 | 912 | if (o->op_flags & OPf_STACKED) |
8990e307 | 913 | break; |
5d82c453 GA |
914 | goto func_ops; |
915 | case OP_SUBSTR: | |
916 | if (o->op_private == 4) | |
917 | break; | |
8990e307 LW |
918 | /* FALL THROUGH */ |
919 | case OP_GVSV: | |
920 | case OP_WANTARRAY: | |
921 | case OP_GV: | |
922 | case OP_PADSV: | |
923 | case OP_PADAV: | |
924 | case OP_PADHV: | |
925 | case OP_PADANY: | |
926 | case OP_AV2ARYLEN: | |
8990e307 | 927 | case OP_REF: |
a0d0e21e LW |
928 | case OP_REFGEN: |
929 | case OP_SREFGEN: | |
8990e307 LW |
930 | case OP_DEFINED: |
931 | case OP_HEX: | |
932 | case OP_OCT: | |
933 | case OP_LENGTH: | |
8990e307 LW |
934 | case OP_VEC: |
935 | case OP_INDEX: | |
936 | case OP_RINDEX: | |
937 | case OP_SPRINTF: | |
938 | case OP_AELEM: | |
939 | case OP_AELEMFAST: | |
940 | case OP_ASLICE: | |
8990e307 LW |
941 | case OP_HELEM: |
942 | case OP_HSLICE: | |
943 | case OP_UNPACK: | |
944 | case OP_PACK: | |
8990e307 LW |
945 | case OP_JOIN: |
946 | case OP_LSLICE: | |
947 | case OP_ANONLIST: | |
948 | case OP_ANONHASH: | |
949 | case OP_SORT: | |
950 | case OP_REVERSE: | |
951 | case OP_RANGE: | |
952 | case OP_FLIP: | |
953 | case OP_FLOP: | |
954 | case OP_CALLER: | |
955 | case OP_FILENO: | |
956 | case OP_EOF: | |
957 | case OP_TELL: | |
958 | case OP_GETSOCKNAME: | |
959 | case OP_GETPEERNAME: | |
960 | case OP_READLINK: | |
961 | case OP_TELLDIR: | |
962 | case OP_GETPPID: | |
963 | case OP_GETPGRP: | |
964 | case OP_GETPRIORITY: | |
965 | case OP_TIME: | |
966 | case OP_TMS: | |
967 | case OP_LOCALTIME: | |
968 | case OP_GMTIME: | |
969 | case OP_GHBYNAME: | |
970 | case OP_GHBYADDR: | |
971 | case OP_GHOSTENT: | |
972 | case OP_GNBYNAME: | |
973 | case OP_GNBYADDR: | |
974 | case OP_GNETENT: | |
975 | case OP_GPBYNAME: | |
976 | case OP_GPBYNUMBER: | |
977 | case OP_GPROTOENT: | |
978 | case OP_GSBYNAME: | |
979 | case OP_GSBYPORT: | |
980 | case OP_GSERVENT: | |
981 | case OP_GPWNAM: | |
982 | case OP_GPWUID: | |
983 | case OP_GGRNAM: | |
984 | case OP_GGRGID: | |
985 | case OP_GETLOGIN: | |
5d82c453 | 986 | func_ops: |
11343788 | 987 | if (!(o->op_private & OPpLVAL_INTRO)) |
22c35a8c | 988 | useless = PL_op_desc[o->op_type]; |
8990e307 LW |
989 | break; |
990 | ||
991 | case OP_RV2GV: | |
992 | case OP_RV2SV: | |
993 | case OP_RV2AV: | |
994 | case OP_RV2HV: | |
11343788 MB |
995 | if (!(o->op_private & OPpLVAL_INTRO) && |
996 | (!o->op_sibling || o->op_sibling->op_type != OP_READLINE)) | |
8990e307 LW |
997 | useless = "a variable"; |
998 | break; | |
79072805 LW |
999 | |
1000 | case OP_CONST: | |
11343788 | 1001 | sv = cSVOPo->op_sv; |
7a52d87a GS |
1002 | if (cSVOPo->op_private & OPpCONST_STRICT) |
1003 | no_bareword_allowed(o); | |
1004 | else { | |
d008e5eb GS |
1005 | dTHR; |
1006 | if (ckWARN(WARN_VOID)) { | |
1007 | useless = "a constant"; | |
1008 | if (SvNIOK(sv) && (SvNV(sv) == 0.0 || SvNV(sv) == 1.0)) | |
1009 | useless = 0; | |
1010 | else if (SvPOK(sv)) { | |
1011 | if (strnEQ(SvPVX(sv), "di", 2) || | |
1012 | strnEQ(SvPVX(sv), "ds", 2) || | |
1013 | strnEQ(SvPVX(sv), "ig", 2)) | |
1014 | useless = 0; | |
1015 | } | |
8990e307 LW |
1016 | } |
1017 | } | |
acb36ea4 | 1018 | null(o); /* don't execute or even remember it */ |
79072805 LW |
1019 | break; |
1020 | ||
1021 | case OP_POSTINC: | |
11343788 | 1022 | o->op_type = OP_PREINC; /* pre-increment is faster */ |
22c35a8c | 1023 | o->op_ppaddr = PL_ppaddr[OP_PREINC]; |
79072805 LW |
1024 | break; |
1025 | ||
1026 | case OP_POSTDEC: | |
11343788 | 1027 | o->op_type = OP_PREDEC; /* pre-decrement is faster */ |
22c35a8c | 1028 | o->op_ppaddr = PL_ppaddr[OP_PREDEC]; |
79072805 LW |
1029 | break; |
1030 | ||
79072805 LW |
1031 | case OP_OR: |
1032 | case OP_AND: | |
1033 | case OP_COND_EXPR: | |
11343788 | 1034 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
1035 | scalarvoid(kid); |
1036 | break; | |
5aabfad6 | 1037 | |
a0d0e21e | 1038 | case OP_NULL: |
11343788 | 1039 | if (o->op_flags & OPf_STACKED) |
a0d0e21e | 1040 | break; |
5aabfad6 | 1041 | /* FALL THROUGH */ |
2ebea0a1 GS |
1042 | case OP_NEXTSTATE: |
1043 | case OP_DBSTATE: | |
79072805 LW |
1044 | case OP_ENTERTRY: |
1045 | case OP_ENTER: | |
1046 | case OP_SCALAR: | |
11343788 | 1047 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1048 | break; |
54310121 | 1049 | /* FALL THROUGH */ |
463ee0b2 | 1050 | case OP_SCOPE: |
79072805 LW |
1051 | case OP_LEAVE: |
1052 | case OP_LEAVETRY: | |
a0d0e21e | 1053 | case OP_LEAVELOOP: |
79072805 | 1054 | case OP_LINESEQ: |
79072805 | 1055 | case OP_LIST: |
11343788 | 1056 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
1057 | scalarvoid(kid); |
1058 | break; | |
c90c0ff4 | 1059 | case OP_ENTEREVAL: |
5196be3e | 1060 | scalarkids(o); |
c90c0ff4 | 1061 | break; |
5aabfad6 | 1062 | case OP_REQUIRE: |
c90c0ff4 | 1063 | /* all requires must return a boolean value */ |
5196be3e MB |
1064 | o->op_flags &= ~OPf_WANT; |
1065 | return scalar(o); | |
a0d0e21e | 1066 | case OP_SPLIT: |
11343788 | 1067 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e LW |
1068 | if (!kPMOP->op_pmreplroot) |
1069 | deprecate("implicit split to @_"); | |
1070 | } | |
1071 | break; | |
79072805 | 1072 | } |
d008e5eb GS |
1073 | if (useless) { |
1074 | dTHR; | |
1075 | if (ckWARN(WARN_VOID)) | |
cea2e8a9 | 1076 | Perl_warner(aTHX_ WARN_VOID, "Useless use of %s in void context", useless); |
d008e5eb | 1077 | } |
11343788 | 1078 | return o; |
79072805 LW |
1079 | } |
1080 | ||
1081 | OP * | |
864dbfa3 | 1082 | Perl_listkids(pTHX_ OP *o) |
79072805 LW |
1083 | { |
1084 | OP *kid; | |
11343788 MB |
1085 | if (o && o->op_flags & OPf_KIDS) { |
1086 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
79072805 LW |
1087 | list(kid); |
1088 | } | |
11343788 | 1089 | return o; |
79072805 LW |
1090 | } |
1091 | ||
1092 | OP * | |
864dbfa3 | 1093 | Perl_list(pTHX_ OP *o) |
79072805 LW |
1094 | { |
1095 | OP *kid; | |
1096 | ||
a0d0e21e | 1097 | /* assumes no premature commitment */ |
3280af22 | 1098 | if (!o || (o->op_flags & OPf_WANT) || PL_error_count |
5dc0d613 | 1099 | || o->op_type == OP_RETURN) |
11343788 | 1100 | return o; |
79072805 | 1101 | |
b162f9ea IZ |
1102 | if ((o->op_private & OPpTARGET_MY) |
1103 | && (PL_opargs[o->op_type] & OA_TARGLEX)) /* OPp share the meaning */ | |
1104 | return o; /* As if inside SASSIGN */ | |
1105 | ||
5dc0d613 | 1106 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_LIST; |
79072805 | 1107 | |
11343788 | 1108 | switch (o->op_type) { |
79072805 LW |
1109 | case OP_FLOP: |
1110 | case OP_REPEAT: | |
11343788 | 1111 | list(cBINOPo->op_first); |
79072805 LW |
1112 | break; |
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 | list(kid); |
1118 | break; | |
1119 | default: | |
1120 | case OP_MATCH: | |
8782bef2 | 1121 | case OP_QR: |
79072805 LW |
1122 | case OP_SUBST: |
1123 | case OP_NULL: | |
11343788 | 1124 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1125 | break; |
11343788 MB |
1126 | if (!o->op_next && cUNOPo->op_first->op_type == OP_FLOP) { |
1127 | list(cBINOPo->op_first); | |
1128 | return gen_constant_list(o); | |
79072805 LW |
1129 | } |
1130 | case OP_LIST: | |
11343788 | 1131 | listkids(o); |
79072805 LW |
1132 | break; |
1133 | case OP_LEAVE: | |
1134 | case OP_LEAVETRY: | |
5dc0d613 | 1135 | kid = cLISTOPo->op_first; |
54310121 | 1136 | list(kid); |
1137 | while (kid = kid->op_sibling) { | |
1138 | if (kid->op_sibling) | |
1139 | scalarvoid(kid); | |
1140 | else | |
1141 | list(kid); | |
1142 | } | |
3280af22 | 1143 | WITH_THR(PL_curcop = &PL_compiling); |
54310121 | 1144 | break; |
748a9306 | 1145 | case OP_SCOPE: |
79072805 | 1146 | case OP_LINESEQ: |
11343788 | 1147 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
1148 | if (kid->op_sibling) |
1149 | scalarvoid(kid); | |
1150 | else | |
1151 | list(kid); | |
1152 | } | |
3280af22 | 1153 | WITH_THR(PL_curcop = &PL_compiling); |
79072805 | 1154 | break; |
c90c0ff4 | 1155 | case OP_REQUIRE: |
1156 | /* all requires must return a boolean value */ | |
5196be3e MB |
1157 | o->op_flags &= ~OPf_WANT; |
1158 | return scalar(o); | |
79072805 | 1159 | } |
11343788 | 1160 | return o; |
79072805 LW |
1161 | } |
1162 | ||
1163 | OP * | |
864dbfa3 | 1164 | Perl_scalarseq(pTHX_ OP *o) |
79072805 LW |
1165 | { |
1166 | OP *kid; | |
1167 | ||
11343788 MB |
1168 | if (o) { |
1169 | if (o->op_type == OP_LINESEQ || | |
1170 | o->op_type == OP_SCOPE || | |
1171 | o->op_type == OP_LEAVE || | |
1172 | o->op_type == OP_LEAVETRY) | |
463ee0b2 | 1173 | { |
0f15f207 | 1174 | dTHR; |
11343788 | 1175 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
ed6116ce | 1176 | if (kid->op_sibling) { |
463ee0b2 | 1177 | scalarvoid(kid); |
ed6116ce | 1178 | } |
463ee0b2 | 1179 | } |
3280af22 | 1180 | PL_curcop = &PL_compiling; |
79072805 | 1181 | } |
11343788 | 1182 | o->op_flags &= ~OPf_PARENS; |
3280af22 | 1183 | if (PL_hints & HINT_BLOCK_SCOPE) |
11343788 | 1184 | o->op_flags |= OPf_PARENS; |
79072805 | 1185 | } |
8990e307 | 1186 | else |
11343788 MB |
1187 | o = newOP(OP_STUB, 0); |
1188 | return o; | |
79072805 LW |
1189 | } |
1190 | ||
76e3520e | 1191 | STATIC OP * |
cea2e8a9 | 1192 | S_modkids(pTHX_ OP *o, I32 type) |
79072805 LW |
1193 | { |
1194 | OP *kid; | |
11343788 MB |
1195 | if (o && o->op_flags & OPf_KIDS) { |
1196 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
463ee0b2 | 1197 | mod(kid, type); |
79072805 | 1198 | } |
11343788 | 1199 | return o; |
79072805 LW |
1200 | } |
1201 | ||
79072805 | 1202 | OP * |
864dbfa3 | 1203 | Perl_mod(pTHX_ OP *o, I32 type) |
79072805 | 1204 | { |
11343788 | 1205 | dTHR; |
79072805 LW |
1206 | OP *kid; |
1207 | SV *sv; | |
2d8e6c8d | 1208 | STRLEN n_a; |
79072805 | 1209 | |
3280af22 | 1210 | if (!o || PL_error_count) |
11343788 | 1211 | return o; |
79072805 | 1212 | |
b162f9ea IZ |
1213 | if ((o->op_private & OPpTARGET_MY) |
1214 | && (PL_opargs[o->op_type] & OA_TARGLEX)) /* OPp share the meaning */ | |
1215 | return o; | |
1216 | ||
11343788 | 1217 | switch (o->op_type) { |
68dc0745 | 1218 | case OP_UNDEF: |
3280af22 | 1219 | PL_modcount++; |
5dc0d613 | 1220 | return o; |
a0d0e21e | 1221 | case OP_CONST: |
11343788 | 1222 | if (!(o->op_private & (OPpCONST_ARYBASE))) |
a0d0e21e | 1223 | goto nomod; |
3280af22 NIS |
1224 | if (PL_eval_start && PL_eval_start->op_type == OP_CONST) { |
1225 | PL_compiling.cop_arybase = (I32)SvIV(((SVOP*)PL_eval_start)->op_sv); | |
1226 | PL_eval_start = 0; | |
a0d0e21e LW |
1227 | } |
1228 | else if (!type) { | |
3280af22 NIS |
1229 | SAVEI32(PL_compiling.cop_arybase); |
1230 | PL_compiling.cop_arybase = 0; | |
a0d0e21e LW |
1231 | } |
1232 | else if (type == OP_REFGEN) | |
1233 | goto nomod; | |
1234 | else | |
cea2e8a9 | 1235 | Perl_croak(aTHX_ "That use of $[ is unsupported"); |
a0d0e21e | 1236 | break; |
5f05dabc | 1237 | case OP_STUB: |
5196be3e | 1238 | if (o->op_flags & OPf_PARENS) |
5f05dabc | 1239 | break; |
1240 | goto nomod; | |
a0d0e21e LW |
1241 | case OP_ENTERSUB: |
1242 | if ((type == OP_UNDEF || type == OP_REFGEN) && | |
11343788 MB |
1243 | !(o->op_flags & OPf_STACKED)) { |
1244 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
22c35a8c | 1245 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 MB |
1246 | assert(cUNOPo->op_first->op_type == OP_NULL); |
1247 | null(((LISTOP*)cUNOPo->op_first)->op_first);/* disable pushmark */ | |
79072805 LW |
1248 | break; |
1249 | } | |
cd06dffe GS |
1250 | else { /* lvalue subroutine call */ |
1251 | o->op_private |= OPpLVAL_INTRO; | |
1252 | if (type == OP_GREPSTART || type == OP_ENTERSUB) { | |
1253 | /* Backward compatibility mode: */ | |
1254 | o->op_private |= OPpENTERSUB_INARGS; | |
1255 | break; | |
1256 | } | |
1257 | else { /* Compile-time error message: */ | |
1258 | OP *kid = cUNOPo->op_first; | |
1259 | CV *cv; | |
1260 | OP *okid; | |
1261 | ||
1262 | if (kid->op_type == OP_PUSHMARK) | |
1263 | goto skip_kids; | |
1264 | if (kid->op_type != OP_NULL || kid->op_targ != OP_LIST) | |
1265 | Perl_croak(aTHX_ | |
1266 | "panic: unexpected lvalue entersub " | |
1267 | "args: type/targ %ld:%ld", | |
1268 | (long)kid->op_type,kid->op_targ); | |
1269 | kid = kLISTOP->op_first; | |
1270 | skip_kids: | |
1271 | while (kid->op_sibling) | |
1272 | kid = kid->op_sibling; | |
1273 | if (!(kid->op_type == OP_NULL && kid->op_targ == OP_RV2CV)) { | |
1274 | /* Indirect call */ | |
1275 | if (kid->op_type == OP_METHOD_NAMED | |
1276 | || kid->op_type == OP_METHOD) | |
1277 | { | |
349fd7b7 | 1278 | OP *newop; |
cd06dffe GS |
1279 | |
1280 | if (kid->op_sibling || kid->op_next != kid) { | |
1281 | yyerror("panic: unexpected optree near method call"); | |
1282 | break; | |
1283 | } | |
1284 | ||
349fd7b7 GS |
1285 | NewOp(1101, newop, 1, OP); |
1286 | newop->op_type = OP_RV2CV; | |
1287 | newop->op_ppaddr = PL_ppaddr[OP_RV2CV]; | |
1288 | newop->op_next = newop; | |
1289 | kid->op_sibling = newop; | |
1290 | newop->op_private |= OPpLVAL_INTRO; | |
cd06dffe GS |
1291 | break; |
1292 | } | |
1293 | ||
1294 | if (kid->op_type != OP_RV2CV) | |
1295 | Perl_croak(aTHX_ | |
1296 | "panic: unexpected lvalue entersub " | |
1297 | "entry via type/targ %ld:%ld", | |
1298 | (long)kid->op_type,kid->op_targ); | |
1299 | kid->op_private |= OPpLVAL_INTRO; | |
1300 | break; /* Postpone until runtime */ | |
1301 | } | |
1302 | ||
1303 | okid = kid; | |
1304 | kid = kUNOP->op_first; | |
1305 | if (kid->op_type == OP_NULL && kid->op_targ == OP_RV2SV) | |
1306 | kid = kUNOP->op_first; | |
1307 | if (kid->op_type == OP_NULL) | |
1308 | Perl_croak(aTHX_ | |
1309 | "Unexpected constant lvalue entersub " | |
1310 | "entry via type/targ %ld:%ld", | |
1311 | (long)kid->op_type,kid->op_targ); | |
1312 | if (kid->op_type != OP_GV) { | |
1313 | /* Restore RV2CV to check lvalueness */ | |
1314 | restore_2cv: | |
1315 | if (kid->op_next && kid->op_next != kid) { /* Happens? */ | |
1316 | okid->op_next = kid->op_next; | |
1317 | kid->op_next = okid; | |
1318 | } | |
1319 | else | |
1320 | okid->op_next = Nullop; | |
1321 | okid->op_type = OP_RV2CV; | |
1322 | okid->op_targ = 0; | |
1323 | okid->op_ppaddr = PL_ppaddr[OP_RV2CV]; | |
1324 | okid->op_private |= OPpLVAL_INTRO; | |
1325 | break; | |
1326 | } | |
1327 | ||
1328 | cv = GvCV(kGVOP->op_gv); | |
1329 | if (!cv) | |
1330 | goto restore_2cv; | |
1331 | if (CvLVALUE(cv)) | |
1332 | break; | |
1333 | } | |
1334 | } | |
79072805 LW |
1335 | /* FALL THROUGH */ |
1336 | default: | |
a0d0e21e LW |
1337 | nomod: |
1338 | /* grep, foreach, subcalls, refgen */ | |
1339 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) | |
1340 | break; | |
cea2e8a9 | 1341 | yyerror(Perl_form(aTHX_ "Can't modify %s in %s", |
638bc118 | 1342 | (o->op_type == OP_NULL && (o->op_flags & OPf_SPECIAL) |
cd06dffe GS |
1343 | ? "do block" |
1344 | : (o->op_type == OP_ENTERSUB | |
1345 | ? "non-lvalue subroutine call" | |
1346 | : PL_op_desc[o->op_type])), | |
22c35a8c | 1347 | type ? PL_op_desc[type] : "local")); |
11343788 | 1348 | return o; |
79072805 | 1349 | |
a0d0e21e LW |
1350 | case OP_PREINC: |
1351 | case OP_PREDEC: | |
1352 | case OP_POW: | |
1353 | case OP_MULTIPLY: | |
1354 | case OP_DIVIDE: | |
1355 | case OP_MODULO: | |
1356 | case OP_REPEAT: | |
1357 | case OP_ADD: | |
1358 | case OP_SUBTRACT: | |
1359 | case OP_CONCAT: | |
1360 | case OP_LEFT_SHIFT: | |
1361 | case OP_RIGHT_SHIFT: | |
1362 | case OP_BIT_AND: | |
1363 | case OP_BIT_XOR: | |
1364 | case OP_BIT_OR: | |
1365 | case OP_I_MULTIPLY: | |
1366 | case OP_I_DIVIDE: | |
1367 | case OP_I_MODULO: | |
1368 | case OP_I_ADD: | |
1369 | case OP_I_SUBTRACT: | |
11343788 | 1370 | if (!(o->op_flags & OPf_STACKED)) |
a0d0e21e | 1371 | goto nomod; |
3280af22 | 1372 | PL_modcount++; |
a0d0e21e LW |
1373 | break; |
1374 | ||
79072805 | 1375 | case OP_COND_EXPR: |
11343788 | 1376 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 | 1377 | mod(kid, type); |
79072805 LW |
1378 | break; |
1379 | ||
1380 | case OP_RV2AV: | |
1381 | case OP_RV2HV: | |
93af7a87 | 1382 | if (!type && cUNOPo->op_first->op_type != OP_GV) |
cea2e8a9 | 1383 | Perl_croak(aTHX_ "Can't localize through a reference"); |
11343788 | 1384 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) { |
3280af22 | 1385 | PL_modcount = 10000; |
11343788 | 1386 | return o; /* Treat \(@foo) like ordinary list. */ |
748a9306 LW |
1387 | } |
1388 | /* FALL THROUGH */ | |
79072805 | 1389 | case OP_RV2GV: |
5dc0d613 | 1390 | if (scalar_mod_type(o, type)) |
3fe9a6f1 | 1391 | goto nomod; |
11343788 | 1392 | ref(cUNOPo->op_first, o->op_type); |
79072805 LW |
1393 | /* FALL THROUGH */ |
1394 | case OP_AASSIGN: | |
1395 | case OP_ASLICE: | |
1396 | case OP_HSLICE: | |
93a17b20 LW |
1397 | case OP_NEXTSTATE: |
1398 | case OP_DBSTATE: | |
a0d0e21e LW |
1399 | case OP_REFGEN: |
1400 | case OP_CHOMP: | |
3280af22 | 1401 | PL_modcount = 10000; |
79072805 | 1402 | break; |
463ee0b2 | 1403 | case OP_RV2SV: |
11343788 | 1404 | if (!type && cUNOPo->op_first->op_type != OP_GV) |
cea2e8a9 | 1405 | Perl_croak(aTHX_ "Can't localize through a reference"); |
aeea060c | 1406 | ref(cUNOPo->op_first, o->op_type); |
463ee0b2 | 1407 | /* FALL THROUGH */ |
79072805 | 1408 | case OP_GV: |
463ee0b2 | 1409 | case OP_AV2ARYLEN: |
3280af22 | 1410 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 1411 | case OP_SASSIGN: |
bf4b1e52 GS |
1412 | case OP_ANDASSIGN: |
1413 | case OP_ORASSIGN: | |
8990e307 | 1414 | case OP_AELEMFAST: |
3280af22 | 1415 | PL_modcount++; |
8990e307 LW |
1416 | break; |
1417 | ||
748a9306 LW |
1418 | case OP_PADAV: |
1419 | case OP_PADHV: | |
3280af22 | 1420 | PL_modcount = 10000; |
5196be3e MB |
1421 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) |
1422 | return o; /* Treat \(@foo) like ordinary list. */ | |
1423 | if (scalar_mod_type(o, type)) | |
3fe9a6f1 | 1424 | goto nomod; |
748a9306 LW |
1425 | /* FALL THROUGH */ |
1426 | case OP_PADSV: | |
3280af22 | 1427 | PL_modcount++; |
748a9306 | 1428 | if (!type) |
cea2e8a9 | 1429 | Perl_croak(aTHX_ "Can't localize lexical variable %s", |
2d8e6c8d | 1430 | SvPV(*av_fetch(PL_comppad_name, o->op_targ, 4), n_a)); |
463ee0b2 LW |
1431 | break; |
1432 | ||
554b3eca | 1433 | #ifdef USE_THREADS |
2faa37cc | 1434 | case OP_THREADSV: |
533c011a | 1435 | PL_modcount++; /* XXX ??? */ |
554b3eca MB |
1436 | break; |
1437 | #endif /* USE_THREADS */ | |
1438 | ||
748a9306 LW |
1439 | case OP_PUSHMARK: |
1440 | break; | |
a0d0e21e | 1441 | |
69969c6f SB |
1442 | case OP_KEYS: |
1443 | if (type != OP_SASSIGN) | |
1444 | goto nomod; | |
5d82c453 GA |
1445 | goto lvalue_func; |
1446 | case OP_SUBSTR: | |
1447 | if (o->op_private == 4) /* don't allow 4 arg substr as lvalue */ | |
1448 | goto nomod; | |
5f05dabc | 1449 | /* FALL THROUGH */ |
a0d0e21e | 1450 | case OP_POS: |
463ee0b2 | 1451 | case OP_VEC: |
5d82c453 | 1452 | lvalue_func: |
11343788 MB |
1453 | pad_free(o->op_targ); |
1454 | o->op_targ = pad_alloc(o->op_type, SVs_PADMY); | |
5dc0d613 | 1455 | assert(SvTYPE(PAD_SV(o->op_targ)) == SVt_NULL); |
11343788 MB |
1456 | if (o->op_flags & OPf_KIDS) |
1457 | mod(cBINOPo->op_first->op_sibling, type); | |
463ee0b2 | 1458 | break; |
a0d0e21e | 1459 | |
463ee0b2 LW |
1460 | case OP_AELEM: |
1461 | case OP_HELEM: | |
11343788 | 1462 | ref(cBINOPo->op_first, o->op_type); |
68dc0745 | 1463 | if (type == OP_ENTERSUB && |
5dc0d613 MB |
1464 | !(o->op_private & (OPpLVAL_INTRO | OPpDEREF))) |
1465 | o->op_private |= OPpLVAL_DEFER; | |
3280af22 | 1466 | PL_modcount++; |
463ee0b2 LW |
1467 | break; |
1468 | ||
1469 | case OP_SCOPE: | |
1470 | case OP_LEAVE: | |
1471 | case OP_ENTER: | |
11343788 MB |
1472 | if (o->op_flags & OPf_KIDS) |
1473 | mod(cLISTOPo->op_last, type); | |
a0d0e21e LW |
1474 | break; |
1475 | ||
1476 | case OP_NULL: | |
638bc118 GS |
1477 | if (o->op_flags & OPf_SPECIAL) /* do BLOCK */ |
1478 | goto nomod; | |
1479 | else if (!(o->op_flags & OPf_KIDS)) | |
463ee0b2 | 1480 | break; |
11343788 MB |
1481 | if (o->op_targ != OP_LIST) { |
1482 | mod(cBINOPo->op_first, type); | |
a0d0e21e LW |
1483 | break; |
1484 | } | |
1485 | /* FALL THROUGH */ | |
463ee0b2 | 1486 | case OP_LIST: |
11343788 | 1487 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1488 | mod(kid, type); |
1489 | break; | |
1490 | } | |
11343788 | 1491 | o->op_flags |= OPf_MOD; |
a0d0e21e LW |
1492 | |
1493 | if (type == OP_AASSIGN || type == OP_SASSIGN) | |
11343788 | 1494 | o->op_flags |= OPf_SPECIAL|OPf_REF; |
a0d0e21e | 1495 | else if (!type) { |
11343788 MB |
1496 | o->op_private |= OPpLVAL_INTRO; |
1497 | o->op_flags &= ~OPf_SPECIAL; | |
3280af22 | 1498 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 1499 | } |
a0d0e21e | 1500 | else if (type != OP_GREPSTART && type != OP_ENTERSUB) |
11343788 MB |
1501 | o->op_flags |= OPf_REF; |
1502 | return o; | |
463ee0b2 LW |
1503 | } |
1504 | ||
864dbfa3 | 1505 | STATIC bool |
cea2e8a9 | 1506 | S_scalar_mod_type(pTHX_ OP *o, I32 type) |
3fe9a6f1 | 1507 | { |
1508 | switch (type) { | |
1509 | case OP_SASSIGN: | |
5196be3e | 1510 | if (o->op_type == OP_RV2GV) |
3fe9a6f1 | 1511 | return FALSE; |
1512 | /* FALL THROUGH */ | |
1513 | case OP_PREINC: | |
1514 | case OP_PREDEC: | |
1515 | case OP_POSTINC: | |
1516 | case OP_POSTDEC: | |
1517 | case OP_I_PREINC: | |
1518 | case OP_I_PREDEC: | |
1519 | case OP_I_POSTINC: | |
1520 | case OP_I_POSTDEC: | |
1521 | case OP_POW: | |
1522 | case OP_MULTIPLY: | |
1523 | case OP_DIVIDE: | |
1524 | case OP_MODULO: | |
1525 | case OP_REPEAT: | |
1526 | case OP_ADD: | |
1527 | case OP_SUBTRACT: | |
1528 | case OP_I_MULTIPLY: | |
1529 | case OP_I_DIVIDE: | |
1530 | case OP_I_MODULO: | |
1531 | case OP_I_ADD: | |
1532 | case OP_I_SUBTRACT: | |
1533 | case OP_LEFT_SHIFT: | |
1534 | case OP_RIGHT_SHIFT: | |
1535 | case OP_BIT_AND: | |
1536 | case OP_BIT_XOR: | |
1537 | case OP_BIT_OR: | |
1538 | case OP_CONCAT: | |
1539 | case OP_SUBST: | |
1540 | case OP_TRANS: | |
49e9fbe6 GS |
1541 | case OP_READ: |
1542 | case OP_SYSREAD: | |
1543 | case OP_RECV: | |
bf4b1e52 GS |
1544 | case OP_ANDASSIGN: |
1545 | case OP_ORASSIGN: | |
3fe9a6f1 | 1546 | return TRUE; |
1547 | default: | |
1548 | return FALSE; | |
1549 | } | |
1550 | } | |
1551 | ||
35cd451c | 1552 | STATIC bool |
cea2e8a9 | 1553 | S_is_handle_constructor(pTHX_ OP *o, I32 argnum) |
35cd451c GS |
1554 | { |
1555 | switch (o->op_type) { | |
1556 | case OP_PIPE_OP: | |
1557 | case OP_SOCKPAIR: | |
1558 | if (argnum == 2) | |
1559 | return TRUE; | |
1560 | /* FALL THROUGH */ | |
1561 | case OP_SYSOPEN: | |
1562 | case OP_OPEN: | |
ded8aa31 | 1563 | case OP_SELECT: /* XXX c.f. SelectSaver.pm */ |
35cd451c GS |
1564 | case OP_SOCKET: |
1565 | case OP_OPEN_DIR: | |
1566 | case OP_ACCEPT: | |
1567 | if (argnum == 1) | |
1568 | return TRUE; | |
1569 | /* FALL THROUGH */ | |
1570 | default: | |
1571 | return FALSE; | |
1572 | } | |
1573 | } | |
1574 | ||
463ee0b2 | 1575 | OP * |
864dbfa3 | 1576 | Perl_refkids(pTHX_ OP *o, I32 type) |
463ee0b2 LW |
1577 | { |
1578 | OP *kid; | |
11343788 MB |
1579 | if (o && o->op_flags & OPf_KIDS) { |
1580 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
463ee0b2 LW |
1581 | ref(kid, type); |
1582 | } | |
11343788 | 1583 | return o; |
463ee0b2 LW |
1584 | } |
1585 | ||
1586 | OP * | |
864dbfa3 | 1587 | Perl_ref(pTHX_ OP *o, I32 type) |
463ee0b2 LW |
1588 | { |
1589 | OP *kid; | |
463ee0b2 | 1590 | |
3280af22 | 1591 | if (!o || PL_error_count) |
11343788 | 1592 | return o; |
463ee0b2 | 1593 | |
11343788 | 1594 | switch (o->op_type) { |
a0d0e21e | 1595 | case OP_ENTERSUB: |
e55aaa0e | 1596 | if ((type == OP_DEFINED || type == OP_LOCK) && |
11343788 MB |
1597 | !(o->op_flags & OPf_STACKED)) { |
1598 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
22c35a8c | 1599 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 MB |
1600 | assert(cUNOPo->op_first->op_type == OP_NULL); |
1601 | null(((LISTOP*)cUNOPo->op_first)->op_first); /* disable pushmark */ | |
1602 | o->op_flags |= OPf_SPECIAL; | |
8990e307 LW |
1603 | } |
1604 | break; | |
aeea060c | 1605 | |
463ee0b2 | 1606 | case OP_COND_EXPR: |
11343788 | 1607 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1608 | ref(kid, type); |
1609 | break; | |
8990e307 | 1610 | case OP_RV2SV: |
35cd451c GS |
1611 | if (type == OP_DEFINED) |
1612 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
11343788 | 1613 | ref(cUNOPo->op_first, o->op_type); |
4633a7c4 LW |
1614 | /* FALL THROUGH */ |
1615 | case OP_PADSV: | |
5f05dabc | 1616 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1617 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1618 | : type == OP_RV2HV ? OPpDEREF_HV | |
1619 | : OPpDEREF_SV); | |
11343788 | 1620 | o->op_flags |= OPf_MOD; |
a0d0e21e | 1621 | } |
8990e307 LW |
1622 | break; |
1623 | ||
2faa37cc | 1624 | case OP_THREADSV: |
a863c7d1 MB |
1625 | o->op_flags |= OPf_MOD; /* XXX ??? */ |
1626 | break; | |
1627 | ||
463ee0b2 LW |
1628 | case OP_RV2AV: |
1629 | case OP_RV2HV: | |
aeea060c | 1630 | o->op_flags |= OPf_REF; |
8990e307 | 1631 | /* FALL THROUGH */ |
463ee0b2 | 1632 | case OP_RV2GV: |
35cd451c GS |
1633 | if (type == OP_DEFINED) |
1634 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
11343788 | 1635 | ref(cUNOPo->op_first, o->op_type); |
463ee0b2 | 1636 | break; |
8990e307 | 1637 | |
463ee0b2 LW |
1638 | case OP_PADAV: |
1639 | case OP_PADHV: | |
aeea060c | 1640 | o->op_flags |= OPf_REF; |
79072805 | 1641 | break; |
aeea060c | 1642 | |
8990e307 | 1643 | case OP_SCALAR: |
79072805 | 1644 | case OP_NULL: |
11343788 | 1645 | if (!(o->op_flags & OPf_KIDS)) |
463ee0b2 | 1646 | break; |
11343788 | 1647 | ref(cBINOPo->op_first, type); |
79072805 LW |
1648 | break; |
1649 | case OP_AELEM: | |
1650 | case OP_HELEM: | |
11343788 | 1651 | ref(cBINOPo->op_first, o->op_type); |
5f05dabc | 1652 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1653 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1654 | : type == OP_RV2HV ? OPpDEREF_HV | |
1655 | : OPpDEREF_SV); | |
11343788 | 1656 | o->op_flags |= OPf_MOD; |
8990e307 | 1657 | } |
79072805 LW |
1658 | break; |
1659 | ||
463ee0b2 | 1660 | case OP_SCOPE: |
79072805 LW |
1661 | case OP_LEAVE: |
1662 | case OP_ENTER: | |
8990e307 | 1663 | case OP_LIST: |
11343788 | 1664 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1665 | break; |
11343788 | 1666 | ref(cLISTOPo->op_last, type); |
79072805 | 1667 | break; |
a0d0e21e LW |
1668 | default: |
1669 | break; | |
79072805 | 1670 | } |
11343788 | 1671 | return scalar(o); |
8990e307 | 1672 | |
79072805 LW |
1673 | } |
1674 | ||
09bef843 SB |
1675 | STATIC OP * |
1676 | S_dup_attrlist(pTHX_ OP *o) | |
1677 | { | |
1678 | OP *rop = Nullop; | |
1679 | ||
1680 | /* An attrlist is either a simple OP_CONST or an OP_LIST with kids, | |
1681 | * where the first kid is OP_PUSHMARK and the remaining ones | |
1682 | * are OP_CONST. We need to push the OP_CONST values. | |
1683 | */ | |
1684 | if (o->op_type == OP_CONST) | |
1685 | rop = newSVOP(OP_CONST, o->op_flags, SvREFCNT_inc(cSVOPo->op_sv)); | |
1686 | else { | |
1687 | assert((o->op_type == OP_LIST) && (o->op_flags & OPf_KIDS)); | |
1688 | for (o = cLISTOPo->op_first; o; o=o->op_sibling) { | |
1689 | if (o->op_type == OP_CONST) | |
1690 | rop = append_elem(OP_LIST, rop, | |
1691 | newSVOP(OP_CONST, o->op_flags, | |
1692 | SvREFCNT_inc(cSVOPo->op_sv))); | |
1693 | } | |
1694 | } | |
1695 | return rop; | |
1696 | } | |
1697 | ||
1698 | STATIC void | |
1699 | S_apply_attrs(pTHX_ HV *stash, SV *target, OP *attrs) | |
1700 | { | |
1701 | OP *modname; /* for 'use' */ | |
1702 | SV *stashsv; | |
1703 | ||
1704 | /* fake up C<use attributes $pkg,$rv,@attrs> */ | |
1705 | ENTER; /* need to protect against side-effects of 'use' */ | |
1706 | SAVEINT(PL_expect); | |
1707 | if (stash && HvNAME(stash)) | |
1708 | stashsv = newSVpv(HvNAME(stash), 0); | |
1709 | else | |
1710 | stashsv = &PL_sv_no; | |
1711 | #define ATTRSMODULE "attributes" | |
1712 | modname = newSVOP(OP_CONST, 0, | |
1713 | newSVpvn(ATTRSMODULE, sizeof(ATTRSMODULE)-1)); | |
1714 | modname->op_private |= OPpCONST_BARE; | |
1715 | /* that flag is required to make 'use' work right */ | |
1716 | utilize(1, start_subparse(FALSE, 0), | |
1717 | Nullop, /* version */ | |
1718 | modname, | |
1719 | prepend_elem(OP_LIST, | |
1720 | newSVOP(OP_CONST, 0, stashsv), | |
1721 | prepend_elem(OP_LIST, | |
1722 | newSVOP(OP_CONST, 0, newRV(target)), | |
1723 | dup_attrlist(attrs)))); | |
1724 | LEAVE; | |
1725 | } | |
1726 | ||
1727 | STATIC OP * | |
1728 | S_my_kid(pTHX_ OP *o, OP *attrs) | |
93a17b20 LW |
1729 | { |
1730 | OP *kid; | |
93a17b20 LW |
1731 | I32 type; |
1732 | ||
3280af22 | 1733 | if (!o || PL_error_count) |
11343788 | 1734 | return o; |
93a17b20 | 1735 | |
11343788 | 1736 | type = o->op_type; |
93a17b20 | 1737 | if (type == OP_LIST) { |
11343788 | 1738 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
09bef843 | 1739 | my_kid(kid, attrs); |
dab48698 | 1740 | } else if (type == OP_UNDEF) { |
7766148a | 1741 | return o; |
77ca0c92 LW |
1742 | } else if (type == OP_RV2SV || /* "our" declaration */ |
1743 | type == OP_RV2AV || | |
1744 | type == OP_RV2HV) { /* XXX does this let anything illegal in? */ | |
1745 | return o; | |
dab48698 | 1746 | } else if (type != OP_PADSV && |
93a17b20 LW |
1747 | type != OP_PADAV && |
1748 | type != OP_PADHV && | |
1749 | type != OP_PUSHMARK) | |
1750 | { | |
cea2e8a9 | 1751 | yyerror(Perl_form(aTHX_ "Can't declare %s in my", PL_op_desc[o->op_type])); |
11343788 | 1752 | return o; |
93a17b20 | 1753 | } |
09bef843 SB |
1754 | else if (attrs && type != OP_PUSHMARK) { |
1755 | HV *stash; | |
1756 | SV *padsv; | |
1757 | SV **namesvp; | |
1758 | ||
1759 | /* check for C<my Dog $spot> when deciding package */ | |
1760 | namesvp = av_fetch(PL_comppad_name, o->op_targ, FALSE); | |
1761 | if (namesvp && *namesvp && SvOBJECT(*namesvp) && HvNAME(SvSTASH(*namesvp))) | |
1762 | stash = SvSTASH(*namesvp); | |
1763 | else | |
1764 | stash = PL_curstash; | |
1765 | padsv = PAD_SV(o->op_targ); | |
1766 | apply_attrs(stash, padsv, attrs); | |
1767 | } | |
11343788 MB |
1768 | o->op_flags |= OPf_MOD; |
1769 | o->op_private |= OPpLVAL_INTRO; | |
1770 | return o; | |
93a17b20 LW |
1771 | } |
1772 | ||
1773 | OP * | |
09bef843 SB |
1774 | Perl_my_attrs(pTHX_ OP *o, OP *attrs) |
1775 | { | |
1776 | if (o->op_flags & OPf_PARENS) | |
1777 | list(o); | |
1778 | PL_in_my = FALSE; | |
1779 | PL_in_my_stash = Nullhv; | |
1780 | if (attrs) | |
1781 | SAVEFREEOP(attrs); | |
1782 | return my_kid(o, attrs); | |
1783 | } | |
1784 | ||
1785 | OP * | |
1786 | Perl_my(pTHX_ OP *o) | |
1787 | { | |
1788 | return my_kid(o, Nullop); | |
1789 | } | |
1790 | ||
1791 | OP * | |
864dbfa3 | 1792 | Perl_sawparens(pTHX_ OP *o) |
79072805 LW |
1793 | { |
1794 | if (o) | |
1795 | o->op_flags |= OPf_PARENS; | |
1796 | return o; | |
1797 | } | |
1798 | ||
1799 | OP * | |
864dbfa3 | 1800 | Perl_bind_match(pTHX_ I32 type, OP *left, OP *right) |
79072805 | 1801 | { |
d008e5eb | 1802 | dTHR; |
11343788 | 1803 | OP *o; |
79072805 | 1804 | |
599cee73 PM |
1805 | if (ckWARN(WARN_UNSAFE) && |
1806 | (left->op_type == OP_RV2AV || | |
1807 | left->op_type == OP_RV2HV || | |
1808 | left->op_type == OP_PADAV || | |
1809 | left->op_type == OP_PADHV)) { | |
22c35a8c | 1810 | char *desc = PL_op_desc[(right->op_type == OP_SUBST || |
599cee73 PM |
1811 | right->op_type == OP_TRANS) |
1812 | ? right->op_type : OP_MATCH]; | |
1813 | char *sample = ((left->op_type == OP_RV2AV || | |
1814 | left->op_type == OP_PADAV) | |
1815 | ? "@array" : "%hash"); | |
cea2e8a9 | 1816 | Perl_warner(aTHX_ WARN_UNSAFE, |
599cee73 PM |
1817 | "Applying %s to %s will act on scalar(%s)", |
1818 | desc, sample, sample); | |
2ae324a7 | 1819 | } |
1820 | ||
79072805 LW |
1821 | if (right->op_type == OP_MATCH || |
1822 | right->op_type == OP_SUBST || | |
1823 | right->op_type == OP_TRANS) { | |
1824 | right->op_flags |= OPf_STACKED; | |
1825 | if (right->op_type != OP_MATCH) | |
463ee0b2 | 1826 | left = mod(left, right->op_type); |
79072805 | 1827 | if (right->op_type == OP_TRANS) |
11343788 | 1828 | o = newBINOP(OP_NULL, OPf_STACKED, scalar(left), right); |
79072805 | 1829 | else |
11343788 | 1830 | o = prepend_elem(right->op_type, scalar(left), right); |
79072805 | 1831 | if (type == OP_NOT) |
11343788 MB |
1832 | return newUNOP(OP_NOT, 0, scalar(o)); |
1833 | return o; | |
79072805 LW |
1834 | } |
1835 | else | |
1836 | return bind_match(type, left, | |
1837 | pmruntime(newPMOP(OP_MATCH, 0), right, Nullop)); | |
1838 | } | |
1839 | ||
1840 | OP * | |
864dbfa3 | 1841 | Perl_invert(pTHX_ OP *o) |
79072805 | 1842 | { |
11343788 MB |
1843 | if (!o) |
1844 | return o; | |
79072805 | 1845 | /* XXX need to optimize away NOT NOT here? Or do we let optimizer do it? */ |
11343788 | 1846 | return newUNOP(OP_NOT, OPf_SPECIAL, scalar(o)); |
79072805 LW |
1847 | } |
1848 | ||
1849 | OP * | |
864dbfa3 | 1850 | Perl_scope(pTHX_ OP *o) |
79072805 LW |
1851 | { |
1852 | if (o) { | |
3280af22 | 1853 | if (o->op_flags & OPf_PARENS || PERLDB_NOOPT || PL_tainting) { |
463ee0b2 LW |
1854 | o = prepend_elem(OP_LINESEQ, newOP(OP_ENTER, 0), o); |
1855 | o->op_type = OP_LEAVE; | |
22c35a8c | 1856 | o->op_ppaddr = PL_ppaddr[OP_LEAVE]; |
463ee0b2 LW |
1857 | } |
1858 | else { | |
1859 | if (o->op_type == OP_LINESEQ) { | |
1860 | OP *kid; | |
1861 | o->op_type = OP_SCOPE; | |
22c35a8c | 1862 | o->op_ppaddr = PL_ppaddr[OP_SCOPE]; |
c3ed7a6a GS |
1863 | kid = ((LISTOP*)o)->op_first; |
1864 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) | |
1865 | null(kid); | |
463ee0b2 LW |
1866 | } |
1867 | else | |
748a9306 | 1868 | o = newLISTOP(OP_SCOPE, 0, o, Nullop); |
463ee0b2 | 1869 | } |
79072805 LW |
1870 | } |
1871 | return o; | |
1872 | } | |
1873 | ||
b3ac6de7 | 1874 | void |
864dbfa3 | 1875 | Perl_save_hints(pTHX) |
b3ac6de7 | 1876 | { |
3280af22 NIS |
1877 | SAVEI32(PL_hints); |
1878 | SAVESPTR(GvHV(PL_hintgv)); | |
1879 | GvHV(PL_hintgv) = newHVhv(GvHV(PL_hintgv)); | |
1880 | SAVEFREESV(GvHV(PL_hintgv)); | |
b3ac6de7 IZ |
1881 | } |
1882 | ||
a0d0e21e | 1883 | int |
864dbfa3 | 1884 | Perl_block_start(pTHX_ int full) |
79072805 | 1885 | { |
11343788 | 1886 | dTHR; |
3280af22 | 1887 | int retval = PL_savestack_ix; |
b3ac6de7 | 1888 | |
3280af22 | 1889 | SAVEI32(PL_comppad_name_floor); |
55497cff | 1890 | if (full) { |
3280af22 NIS |
1891 | if ((PL_comppad_name_fill = AvFILLp(PL_comppad_name)) > 0) |
1892 | PL_comppad_name_floor = PL_comppad_name_fill; | |
55497cff | 1893 | else |
3280af22 NIS |
1894 | PL_comppad_name_floor = 0; |
1895 | } | |
1896 | SAVEI32(PL_min_intro_pending); | |
1897 | SAVEI32(PL_max_intro_pending); | |
1898 | PL_min_intro_pending = 0; | |
1899 | SAVEI32(PL_comppad_name_fill); | |
1900 | SAVEI32(PL_padix_floor); | |
1901 | PL_padix_floor = PL_padix; | |
1902 | PL_pad_reset_pending = FALSE; | |
b3ac6de7 | 1903 | SAVEHINTS(); |
3280af22 | 1904 | PL_hints &= ~HINT_BLOCK_SCOPE; |
e24b16f9 | 1905 | SAVEPPTR(PL_compiling.cop_warnings); |
0453d815 | 1906 | if (! specialWARN(PL_compiling.cop_warnings)) { |
599cee73 PM |
1907 | PL_compiling.cop_warnings = newSVsv(PL_compiling.cop_warnings) ; |
1908 | SAVEFREESV(PL_compiling.cop_warnings) ; | |
1909 | } | |
1910 | ||
1911 | ||
a0d0e21e LW |
1912 | return retval; |
1913 | } | |
1914 | ||
1915 | OP* | |
864dbfa3 | 1916 | Perl_block_end(pTHX_ I32 floor, OP *seq) |
a0d0e21e | 1917 | { |
11343788 | 1918 | dTHR; |
3280af22 | 1919 | int needblockscope = PL_hints & HINT_BLOCK_SCOPE; |
a0d0e21e | 1920 | OP* retval = scalarseq(seq); |
a0d0e21e | 1921 | LEAVE_SCOPE(floor); |
3280af22 | 1922 | PL_pad_reset_pending = FALSE; |
e24b16f9 | 1923 | PL_compiling.op_private = PL_hints; |
a0d0e21e | 1924 | if (needblockscope) |
3280af22 NIS |
1925 | PL_hints |= HINT_BLOCK_SCOPE; /* propagate out */ |
1926 | pad_leavemy(PL_comppad_name_fill); | |
1927 | PL_cop_seqmax++; | |
a0d0e21e LW |
1928 | return retval; |
1929 | } | |
1930 | ||
76e3520e | 1931 | STATIC OP * |
cea2e8a9 | 1932 | S_newDEFSVOP(pTHX) |
54b9620d MB |
1933 | { |
1934 | #ifdef USE_THREADS | |
1935 | OP *o = newOP(OP_THREADSV, 0); | |
1936 | o->op_targ = find_threadsv("_"); | |
1937 | return o; | |
1938 | #else | |
3280af22 | 1939 | return newSVREF(newGVOP(OP_GV, 0, PL_defgv)); |
54b9620d MB |
1940 | #endif /* USE_THREADS */ |
1941 | } | |
1942 | ||
a0d0e21e | 1943 | void |
864dbfa3 | 1944 | Perl_newPROG(pTHX_ OP *o) |
a0d0e21e | 1945 | { |
11343788 | 1946 | dTHR; |
3280af22 | 1947 | if (PL_in_eval) { |
b295d113 TH |
1948 | if (PL_eval_root) |
1949 | return; | |
faef0170 HS |
1950 | PL_eval_root = newUNOP(OP_LEAVEEVAL, |
1951 | ((PL_in_eval & EVAL_KEEPERR) | |
1952 | ? OPf_SPECIAL : 0), o); | |
3280af22 NIS |
1953 | PL_eval_start = linklist(PL_eval_root); |
1954 | PL_eval_root->op_next = 0; | |
1955 | peep(PL_eval_start); | |
a0d0e21e LW |
1956 | } |
1957 | else { | |
5dc0d613 | 1958 | if (!o) |
a0d0e21e | 1959 | return; |
3280af22 NIS |
1960 | PL_main_root = scope(sawparens(scalarvoid(o))); |
1961 | PL_curcop = &PL_compiling; | |
1962 | PL_main_start = LINKLIST(PL_main_root); | |
1963 | PL_main_root->op_next = 0; | |
1964 | peep(PL_main_start); | |
1965 | PL_compcv = 0; | |
3841441e | 1966 | |
4fdae800 | 1967 | /* Register with debugger */ |
84902520 | 1968 | if (PERLDB_INTER) { |
864dbfa3 | 1969 | CV *cv = get_cv("DB::postponed", FALSE); |
3841441e CS |
1970 | if (cv) { |
1971 | dSP; | |
924508f0 | 1972 | PUSHMARK(SP); |
3280af22 | 1973 | XPUSHs((SV*)PL_compiling.cop_filegv); |
3841441e | 1974 | PUTBACK; |
864dbfa3 | 1975 | call_sv((SV*)cv, G_DISCARD); |
3841441e CS |
1976 | } |
1977 | } | |
79072805 | 1978 | } |
79072805 LW |
1979 | } |
1980 | ||
1981 | OP * | |
864dbfa3 | 1982 | Perl_localize(pTHX_ OP *o, I32 lex) |
79072805 LW |
1983 | { |
1984 | if (o->op_flags & OPf_PARENS) | |
1985 | list(o); | |
8990e307 | 1986 | else { |
d008e5eb | 1987 | dTHR; |
599cee73 | 1988 | if (ckWARN(WARN_PARENTHESIS) && PL_bufptr > PL_oldbufptr && PL_bufptr[-1] == ',') { |
8990e307 | 1989 | char *s; |
834a4ddd | 1990 | for (s = PL_bufptr; *s && (isALNUM(*s) || (*s & 0x80) || strchr("@$%, ",*s)); s++) ; |
a0d0e21e | 1991 | if (*s == ';' || *s == '=') |
cea2e8a9 | 1992 | Perl_warner(aTHX_ WARN_PARENTHESIS, "Parentheses missing around \"%s\" list", |
599cee73 | 1993 | lex ? "my" : "local"); |
8990e307 LW |
1994 | } |
1995 | } | |
3280af22 NIS |
1996 | PL_in_my = FALSE; |
1997 | PL_in_my_stash = Nullhv; | |
93a17b20 LW |
1998 | if (lex) |
1999 | return my(o); | |
2000 | else | |
463ee0b2 | 2001 | return mod(o, OP_NULL); /* a bit kludgey */ |
79072805 LW |
2002 | } |
2003 | ||
2004 | OP * | |
864dbfa3 | 2005 | Perl_jmaybe(pTHX_ OP *o) |
79072805 LW |
2006 | { |
2007 | if (o->op_type == OP_LIST) { | |
554b3eca MB |
2008 | OP *o2; |
2009 | #ifdef USE_THREADS | |
2faa37cc | 2010 | o2 = newOP(OP_THREADSV, 0); |
54b9620d | 2011 | o2->op_targ = find_threadsv(";"); |
554b3eca MB |
2012 | #else |
2013 | o2 = newSVREF(newGVOP(OP_GV, 0, gv_fetchpv(";", TRUE, SVt_PV))), | |
2014 | #endif /* USE_THREADS */ | |
2015 | o = convert(OP_JOIN, 0, prepend_elem(OP_LIST, o2, o)); | |
79072805 LW |
2016 | } |
2017 | return o; | |
2018 | } | |
2019 | ||
2020 | OP * | |
864dbfa3 | 2021 | Perl_fold_constants(pTHX_ register OP *o) |
79072805 | 2022 | { |
11343788 | 2023 | dTHR; |
79072805 LW |
2024 | register OP *curop; |
2025 | I32 type = o->op_type; | |
748a9306 | 2026 | SV *sv; |
79072805 | 2027 | |
22c35a8c | 2028 | if (PL_opargs[type] & OA_RETSCALAR) |
79072805 | 2029 | scalar(o); |
b162f9ea | 2030 | if (PL_opargs[type] & OA_TARGET && !o->op_targ) |
ed6116ce | 2031 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 | 2032 | |
eac055e9 GS |
2033 | /* integerize op, unless it happens to be C<-foo>. |
2034 | * XXX should pp_i_negate() do magic string negation instead? */ | |
2035 | if ((PL_opargs[type] & OA_OTHERINT) && (PL_hints & HINT_INTEGER) | |
2036 | && !(type == OP_NEGATE && cUNOPo->op_first->op_type == OP_CONST | |
2037 | && (cUNOPo->op_first->op_private & OPpCONST_BARE))) | |
2038 | { | |
22c35a8c | 2039 | o->op_ppaddr = PL_ppaddr[type = ++(o->op_type)]; |
eac055e9 | 2040 | } |
85e6fe83 | 2041 | |
22c35a8c | 2042 | if (!(PL_opargs[type] & OA_FOLDCONST)) |
79072805 LW |
2043 | goto nope; |
2044 | ||
de939608 | 2045 | switch (type) { |
7a52d87a GS |
2046 | case OP_NEGATE: |
2047 | /* XXX might want a ck_negate() for this */ | |
2048 | cUNOPo->op_first->op_private &= ~OPpCONST_STRICT; | |
2049 | break; | |
de939608 CS |
2050 | case OP_SPRINTF: |
2051 | case OP_UCFIRST: | |
2052 | case OP_LCFIRST: | |
2053 | case OP_UC: | |
2054 | case OP_LC: | |
69dcf70c MB |
2055 | case OP_SLT: |
2056 | case OP_SGT: | |
2057 | case OP_SLE: | |
2058 | case OP_SGE: | |
2059 | case OP_SCMP: | |
2060 | ||
de939608 CS |
2061 | if (o->op_private & OPpLOCALE) |
2062 | goto nope; | |
2063 | } | |
2064 | ||
3280af22 | 2065 | if (PL_error_count) |
a0d0e21e LW |
2066 | goto nope; /* Don't try to run w/ errors */ |
2067 | ||
79072805 | 2068 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
11fa937b GS |
2069 | if ((curop->op_type != OP_CONST || |
2070 | (curop->op_private & OPpCONST_BARE)) && | |
7a52d87a GS |
2071 | curop->op_type != OP_LIST && |
2072 | curop->op_type != OP_SCALAR && | |
2073 | curop->op_type != OP_NULL && | |
2074 | curop->op_type != OP_PUSHMARK) | |
2075 | { | |
79072805 LW |
2076 | goto nope; |
2077 | } | |
2078 | } | |
2079 | ||
2080 | curop = LINKLIST(o); | |
2081 | o->op_next = 0; | |
533c011a | 2082 | PL_op = curop; |
cea2e8a9 | 2083 | CALLRUNOPS(aTHX); |
3280af22 | 2084 | sv = *(PL_stack_sp--); |
748a9306 | 2085 | if (o->op_targ && sv == PAD_SV(o->op_targ)) /* grab pad temp? */ |
79072805 | 2086 | pad_swipe(o->op_targ); |
748a9306 LW |
2087 | else if (SvTEMP(sv)) { /* grab mortal temp? */ |
2088 | (void)SvREFCNT_inc(sv); | |
2089 | SvTEMP_off(sv); | |
85e6fe83 | 2090 | } |
79072805 LW |
2091 | op_free(o); |
2092 | if (type == OP_RV2GV) | |
b1cb66bf | 2093 | return newGVOP(OP_GV, 0, (GV*)sv); |
748a9306 | 2094 | else { |
ee580363 GS |
2095 | /* try to smush double to int, but don't smush -2.0 to -2 */ |
2096 | if ((SvFLAGS(sv) & (SVf_IOK|SVf_NOK|SVf_POK)) == SVf_NOK && | |
2097 | type != OP_NEGATE) | |
2098 | { | |
748a9306 | 2099 | IV iv = SvIV(sv); |
65202027 | 2100 | if ((NV)iv == SvNV(sv)) { |
748a9306 LW |
2101 | SvREFCNT_dec(sv); |
2102 | sv = newSViv(iv); | |
2103 | } | |
b1cb66bf | 2104 | else |
2105 | SvIOK_off(sv); /* undo SvIV() damage */ | |
748a9306 LW |
2106 | } |
2107 | return newSVOP(OP_CONST, 0, sv); | |
2108 | } | |
aeea060c | 2109 | |
79072805 | 2110 | nope: |
22c35a8c | 2111 | if (!(PL_opargs[type] & OA_OTHERINT)) |
79072805 | 2112 | return o; |
79072805 | 2113 | |
3280af22 | 2114 | if (!(PL_hints & HINT_INTEGER)) { |
a0d0e21e | 2115 | if (type == OP_DIVIDE || !(o->op_flags & OPf_KIDS)) |
85e6fe83 LW |
2116 | return o; |
2117 | ||
2118 | for (curop = ((UNOP*)o)->op_first; curop; curop = curop->op_sibling) { | |
2119 | if (curop->op_type == OP_CONST) { | |
b1cb66bf | 2120 | if (SvIOK(((SVOP*)curop)->op_sv)) |
85e6fe83 LW |
2121 | continue; |
2122 | return o; | |
2123 | } | |
22c35a8c | 2124 | if (PL_opargs[curop->op_type] & OA_RETINTEGER) |
79072805 LW |
2125 | continue; |
2126 | return o; | |
2127 | } | |
22c35a8c | 2128 | o->op_ppaddr = PL_ppaddr[++(o->op_type)]; |
79072805 LW |
2129 | } |
2130 | ||
79072805 LW |
2131 | return o; |
2132 | } | |
2133 | ||
2134 | OP * | |
864dbfa3 | 2135 | Perl_gen_constant_list(pTHX_ register OP *o) |
79072805 | 2136 | { |
11343788 | 2137 | dTHR; |
79072805 | 2138 | register OP *curop; |
3280af22 | 2139 | I32 oldtmps_floor = PL_tmps_floor; |
79072805 | 2140 | |
a0d0e21e | 2141 | list(o); |
3280af22 | 2142 | if (PL_error_count) |
a0d0e21e LW |
2143 | return o; /* Don't attempt to run with errors */ |
2144 | ||
533c011a | 2145 | PL_op = curop = LINKLIST(o); |
a0d0e21e | 2146 | o->op_next = 0; |
cea2e8a9 GS |
2147 | pp_pushmark(); |
2148 | CALLRUNOPS(aTHX); | |
533c011a | 2149 | PL_op = curop; |
cea2e8a9 | 2150 | pp_anonlist(); |
3280af22 | 2151 | PL_tmps_floor = oldtmps_floor; |
79072805 LW |
2152 | |
2153 | o->op_type = OP_RV2AV; | |
22c35a8c | 2154 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
79072805 | 2155 | curop = ((UNOP*)o)->op_first; |
3280af22 | 2156 | ((UNOP*)o)->op_first = newSVOP(OP_CONST, 0, SvREFCNT_inc(*PL_stack_sp--)); |
79072805 | 2157 | op_free(curop); |
79072805 LW |
2158 | linklist(o); |
2159 | return list(o); | |
2160 | } | |
2161 | ||
2162 | OP * | |
864dbfa3 | 2163 | Perl_convert(pTHX_ I32 type, I32 flags, OP *o) |
79072805 LW |
2164 | { |
2165 | OP *kid; | |
a0d0e21e | 2166 | OP *last = 0; |
79072805 | 2167 | |
11343788 MB |
2168 | if (!o || o->op_type != OP_LIST) |
2169 | o = newLISTOP(OP_LIST, 0, o, Nullop); | |
748a9306 | 2170 | else |
5dc0d613 | 2171 | o->op_flags &= ~OPf_WANT; |
79072805 | 2172 | |
22c35a8c | 2173 | if (!(PL_opargs[type] & OA_MARK)) |
11343788 | 2174 | null(cLISTOPo->op_first); |
8990e307 | 2175 | |
11343788 | 2176 | o->op_type = type; |
22c35a8c | 2177 | o->op_ppaddr = PL_ppaddr[type]; |
11343788 | 2178 | o->op_flags |= flags; |
79072805 | 2179 | |
11343788 MB |
2180 | o = CHECKOP(type, o); |
2181 | if (o->op_type != type) | |
2182 | return o; | |
79072805 | 2183 | |
11343788 | 2184 | if (cLISTOPo->op_children < 7) { |
79072805 | 2185 | /* XXX do we really need to do this if we're done appending?? */ |
11343788 | 2186 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 | 2187 | last = kid; |
11343788 | 2188 | cLISTOPo->op_last = last; /* in case check substituted last arg */ |
79072805 LW |
2189 | } |
2190 | ||
11343788 | 2191 | return fold_constants(o); |
79072805 LW |
2192 | } |
2193 | ||
2194 | /* List constructors */ | |
2195 | ||
2196 | OP * | |
864dbfa3 | 2197 | Perl_append_elem(pTHX_ I32 type, OP *first, OP *last) |
79072805 LW |
2198 | { |
2199 | if (!first) | |
2200 | return last; | |
8990e307 LW |
2201 | |
2202 | if (!last) | |
79072805 | 2203 | return first; |
8990e307 | 2204 | |
a0d0e21e LW |
2205 | if (first->op_type != type || type==OP_LIST && first->op_flags & OPf_PARENS) |
2206 | return newLISTOP(type, 0, first, last); | |
79072805 | 2207 | |
a0d0e21e LW |
2208 | if (first->op_flags & OPf_KIDS) |
2209 | ((LISTOP*)first)->op_last->op_sibling = last; | |
2210 | else { | |
2211 | first->op_flags |= OPf_KIDS; | |
2212 | ((LISTOP*)first)->op_first = last; | |
2213 | } | |
2214 | ((LISTOP*)first)->op_last = last; | |
2215 | ((LISTOP*)first)->op_children++; | |
2216 | return first; | |
79072805 LW |
2217 | } |
2218 | ||
2219 | OP * | |
864dbfa3 | 2220 | Perl_append_list(pTHX_ I32 type, LISTOP *first, LISTOP *last) |
79072805 LW |
2221 | { |
2222 | if (!first) | |
2223 | return (OP*)last; | |
8990e307 LW |
2224 | |
2225 | if (!last) | |
79072805 | 2226 | return (OP*)first; |
8990e307 LW |
2227 | |
2228 | if (first->op_type != type) | |
79072805 | 2229 | return prepend_elem(type, (OP*)first, (OP*)last); |
8990e307 LW |
2230 | |
2231 | if (last->op_type != type) | |
79072805 LW |
2232 | return append_elem(type, (OP*)first, (OP*)last); |
2233 | ||
2234 | first->op_last->op_sibling = last->op_first; | |
2235 | first->op_last = last->op_last; | |
2236 | first->op_children += last->op_children; | |
2237 | if (first->op_children) | |
acb74605 | 2238 | first->op_flags |= OPf_KIDS; |
b7dc083c NIS |
2239 | |
2240 | #ifdef PL_OP_SLAB_ALLOC | |
2241 | #else | |
2242 | Safefree(last); | |
2243 | #endif | |
79072805 LW |
2244 | return (OP*)first; |
2245 | } | |
2246 | ||
2247 | OP * | |
864dbfa3 | 2248 | Perl_prepend_elem(pTHX_ I32 type, OP *first, OP *last) |
79072805 LW |
2249 | { |
2250 | if (!first) | |
2251 | return last; | |
8990e307 LW |
2252 | |
2253 | if (!last) | |
79072805 | 2254 | return first; |
8990e307 LW |
2255 | |
2256 | if (last->op_type == type) { | |
2257 | if (type == OP_LIST) { /* already a PUSHMARK there */ | |
2258 | first->op_sibling = ((LISTOP*)last)->op_first->op_sibling; | |
2259 | ((LISTOP*)last)->op_first->op_sibling = first; | |
2260 | } | |
2261 | else { | |
2262 | if (!(last->op_flags & OPf_KIDS)) { | |
2263 | ((LISTOP*)last)->op_last = first; | |
2264 | last->op_flags |= OPf_KIDS; | |
2265 | } | |
2266 | first->op_sibling = ((LISTOP*)last)->op_first; | |
2267 | ((LISTOP*)last)->op_first = first; | |
79072805 | 2268 | } |
79072805 LW |
2269 | ((LISTOP*)last)->op_children++; |
2270 | return last; | |
2271 | } | |
2272 | ||
2273 | return newLISTOP(type, 0, first, last); | |
2274 | } | |
2275 | ||
2276 | /* Constructors */ | |
2277 | ||
2278 | OP * | |
864dbfa3 | 2279 | Perl_newNULLLIST(pTHX) |
79072805 | 2280 | { |
8990e307 LW |
2281 | return newOP(OP_STUB, 0); |
2282 | } | |
2283 | ||
2284 | OP * | |
864dbfa3 | 2285 | Perl_force_list(pTHX_ OP *o) |
8990e307 | 2286 | { |
11343788 MB |
2287 | if (!o || o->op_type != OP_LIST) |
2288 | o = newLISTOP(OP_LIST, 0, o, Nullop); | |
2289 | null(o); | |
2290 | return o; | |
79072805 LW |
2291 | } |
2292 | ||
2293 | OP * | |
864dbfa3 | 2294 | Perl_newLISTOP(pTHX_ I32 type, I32 flags, OP *first, OP *last) |
79072805 LW |
2295 | { |
2296 | LISTOP *listop; | |
2297 | ||
b7dc083c | 2298 | NewOp(1101, listop, 1, LISTOP); |
79072805 LW |
2299 | |
2300 | listop->op_type = type; | |
22c35a8c | 2301 | listop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2302 | listop->op_children = (first != 0) + (last != 0); |
2303 | listop->op_flags = flags; | |
79072805 LW |
2304 | |
2305 | if (!last && first) | |
2306 | last = first; | |
2307 | else if (!first && last) | |
2308 | first = last; | |
8990e307 LW |
2309 | else if (first) |
2310 | first->op_sibling = last; | |
79072805 LW |
2311 | listop->op_first = first; |
2312 | listop->op_last = last; | |
8990e307 LW |
2313 | if (type == OP_LIST) { |
2314 | OP* pushop; | |
2315 | pushop = newOP(OP_PUSHMARK, 0); | |
2316 | pushop->op_sibling = first; | |
2317 | listop->op_first = pushop; | |
2318 | listop->op_flags |= OPf_KIDS; | |
2319 | if (!last) | |
2320 | listop->op_last = pushop; | |
2321 | } | |
2322 | else if (listop->op_children) | |
2323 | listop->op_flags |= OPf_KIDS; | |
79072805 LW |
2324 | |
2325 | return (OP*)listop; | |
2326 | } | |
2327 | ||
2328 | OP * | |
864dbfa3 | 2329 | Perl_newOP(pTHX_ I32 type, I32 flags) |
79072805 | 2330 | { |
11343788 | 2331 | OP *o; |
b7dc083c | 2332 | NewOp(1101, o, 1, OP); |
11343788 | 2333 | o->op_type = type; |
22c35a8c | 2334 | o->op_ppaddr = PL_ppaddr[type]; |
11343788 | 2335 | o->op_flags = flags; |
79072805 | 2336 | |
11343788 MB |
2337 | o->op_next = o; |
2338 | o->op_private = 0 + (flags >> 8); | |
22c35a8c | 2339 | if (PL_opargs[type] & OA_RETSCALAR) |
11343788 | 2340 | scalar(o); |
22c35a8c | 2341 | if (PL_opargs[type] & OA_TARGET) |
11343788 MB |
2342 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
2343 | return CHECKOP(type, o); | |
79072805 LW |
2344 | } |
2345 | ||
2346 | OP * | |
864dbfa3 | 2347 | Perl_newUNOP(pTHX_ I32 type, I32 flags, OP *first) |
79072805 LW |
2348 | { |
2349 | UNOP *unop; | |
2350 | ||
93a17b20 | 2351 | if (!first) |
aeea060c | 2352 | first = newOP(OP_STUB, 0); |
22c35a8c | 2353 | if (PL_opargs[type] & OA_MARK) |
8990e307 | 2354 | first = force_list(first); |
93a17b20 | 2355 | |
b7dc083c | 2356 | NewOp(1101, unop, 1, UNOP); |
79072805 | 2357 | unop->op_type = type; |
22c35a8c | 2358 | unop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2359 | unop->op_first = first; |
2360 | unop->op_flags = flags | OPf_KIDS; | |
c07a80fd | 2361 | unop->op_private = 1 | (flags >> 8); |
e50aee73 | 2362 | unop = (UNOP*) CHECKOP(type, unop); |
79072805 LW |
2363 | if (unop->op_next) |
2364 | return (OP*)unop; | |
2365 | ||
a0d0e21e | 2366 | return fold_constants((OP *) unop); |
79072805 LW |
2367 | } |
2368 | ||
2369 | OP * | |
864dbfa3 | 2370 | Perl_newBINOP(pTHX_ I32 type, I32 flags, OP *first, OP *last) |
79072805 LW |
2371 | { |
2372 | BINOP *binop; | |
b7dc083c | 2373 | NewOp(1101, binop, 1, BINOP); |
79072805 LW |
2374 | |
2375 | if (!first) | |
2376 | first = newOP(OP_NULL, 0); | |
2377 | ||
2378 | binop->op_type = type; | |
22c35a8c | 2379 | binop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2380 | binop->op_first = first; |
2381 | binop->op_flags = flags | OPf_KIDS; | |
2382 | if (!last) { | |
2383 | last = first; | |
c07a80fd | 2384 | binop->op_private = 1 | (flags >> 8); |
79072805 LW |
2385 | } |
2386 | else { | |
c07a80fd | 2387 | binop->op_private = 2 | (flags >> 8); |
79072805 LW |
2388 | first->op_sibling = last; |
2389 | } | |
2390 | ||
e50aee73 | 2391 | binop = (BINOP*)CHECKOP(type, binop); |
b162f9ea | 2392 | if (binop->op_next || binop->op_type != type) |
79072805 LW |
2393 | return (OP*)binop; |
2394 | ||
7284ab6f | 2395 | binop->op_last = binop->op_first->op_sibling; |
79072805 | 2396 | |
a0d0e21e | 2397 | return fold_constants((OP *)binop); |
79072805 LW |
2398 | } |
2399 | ||
a0ed51b3 LW |
2400 | static int |
2401 | utf8compare(const void *a, const void *b) | |
2402 | { | |
2403 | int i; | |
2404 | for (i = 0; i < 10; i++) { | |
2405 | if ((*(U8**)a)[i] < (*(U8**)b)[i]) | |
2406 | return -1; | |
2407 | if ((*(U8**)a)[i] > (*(U8**)b)[i]) | |
2408 | return 1; | |
2409 | } | |
2410 | return 0; | |
2411 | } | |
2412 | ||
79072805 | 2413 | OP * |
864dbfa3 | 2414 | Perl_pmtrans(pTHX_ OP *o, OP *expr, OP *repl) |
79072805 | 2415 | { |
79072805 LW |
2416 | SV *tstr = ((SVOP*)expr)->op_sv; |
2417 | SV *rstr = ((SVOP*)repl)->op_sv; | |
463ee0b2 LW |
2418 | STRLEN tlen; |
2419 | STRLEN rlen; | |
ec49126f | 2420 | register U8 *t = (U8*)SvPV(tstr, tlen); |
2421 | register U8 *r = (U8*)SvPV(rstr, rlen); | |
79072805 LW |
2422 | register I32 i; |
2423 | register I32 j; | |
a0ed51b3 | 2424 | I32 del; |
79072805 | 2425 | I32 complement; |
5d06d08e | 2426 | I32 squash; |
79072805 LW |
2427 | register short *tbl; |
2428 | ||
11343788 | 2429 | complement = o->op_private & OPpTRANS_COMPLEMENT; |
a0ed51b3 | 2430 | del = o->op_private & OPpTRANS_DELETE; |
5d06d08e | 2431 | squash = o->op_private & OPpTRANS_SQUASH; |
79072805 | 2432 | |
a0ed51b3 | 2433 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { |
79cb57f6 | 2434 | SV* listsv = newSVpvn("# comment\n",10); |
a0ed51b3 LW |
2435 | SV* transv = 0; |
2436 | U8* tend = t + tlen; | |
2437 | U8* rend = r + rlen; | |
2438 | I32 ulen; | |
2439 | U32 tfirst = 1; | |
2440 | U32 tlast = 0; | |
2441 | I32 tdiff; | |
2442 | U32 rfirst = 1; | |
2443 | U32 rlast = 0; | |
2444 | I32 rdiff; | |
2445 | I32 diff; | |
2446 | I32 none = 0; | |
2447 | U32 max = 0; | |
2448 | I32 bits; | |
2449 | I32 grows = 0; | |
2450 | I32 havefinal = 0; | |
2451 | U32 final; | |
2452 | HV *hv; | |
2453 | I32 from_utf = o->op_private & OPpTRANS_FROM_UTF; | |
2454 | I32 to_utf = o->op_private & OPpTRANS_TO_UTF; | |
2455 | ||
2456 | if (complement) { | |
2457 | U8 tmpbuf[10]; | |
2458 | U8** cp; | |
2459 | UV nextmin = 0; | |
2460 | New(1109, cp, tlen, U8*); | |
2461 | i = 0; | |
79cb57f6 | 2462 | transv = newSVpvn("",0); |
a0ed51b3 LW |
2463 | while (t < tend) { |
2464 | cp[i++] = t; | |
2465 | t += UTF8SKIP(t); | |
2466 | if (*t == 0xff) { | |
2467 | t++; | |
2468 | t += UTF8SKIP(t); | |
2469 | } | |
2470 | } | |
2471 | qsort(cp, i, sizeof(U8*), utf8compare); | |
2472 | for (j = 0; j < i; j++) { | |
2473 | U8 *s = cp[j]; | |
2474 | UV val = utf8_to_uv(s, &ulen); | |
2475 | s += ulen; | |
2476 | diff = val - nextmin; | |
2477 | if (diff > 0) { | |
2478 | t = uv_to_utf8(tmpbuf,nextmin); | |
dfe13c55 | 2479 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 LW |
2480 | if (diff > 1) { |
2481 | t = uv_to_utf8(tmpbuf, val - 1); | |
2482 | sv_catpvn(transv, "\377", 1); | |
dfe13c55 | 2483 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 LW |
2484 | } |
2485 | } | |
2486 | if (*s == 0xff) | |
2487 | val = utf8_to_uv(s+1, &ulen); | |
2488 | if (val >= nextmin) | |
2489 | nextmin = val + 1; | |
2490 | } | |
2491 | t = uv_to_utf8(tmpbuf,nextmin); | |
dfe13c55 | 2492 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 LW |
2493 | t = uv_to_utf8(tmpbuf, 0x7fffffff); |
2494 | sv_catpvn(transv, "\377", 1); | |
dfe13c55 GS |
2495 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
2496 | t = (U8*)SvPVX(transv); | |
a0ed51b3 LW |
2497 | tlen = SvCUR(transv); |
2498 | tend = t + tlen; | |
2499 | } | |
2500 | else if (!rlen && !del) { | |
2501 | r = t; rlen = tlen; rend = tend; | |
4757a243 LW |
2502 | } |
2503 | if (!squash) { | |
2504 | if (to_utf && from_utf) { /* only counting characters */ | |
2505 | if (t == r || (tlen == rlen && memEQ(t, r, tlen))) | |
2506 | o->op_private |= OPpTRANS_IDENTICAL; | |
2507 | } | |
2508 | else { /* straight latin-1 translation */ | |
2509 | if (tlen == 4 && memEQ(t, "\0\377\303\277", 4) && | |
2510 | rlen == 4 && memEQ(r, "\0\377\303\277", 4)) | |
2511 | o->op_private |= OPpTRANS_IDENTICAL; | |
2512 | } | |
a0ed51b3 LW |
2513 | } |
2514 | ||
2515 | while (t < tend || tfirst <= tlast) { | |
2516 | /* see if we need more "t" chars */ | |
2517 | if (tfirst > tlast) { | |
2518 | tfirst = (I32)utf8_to_uv(t, &ulen); | |
2519 | t += ulen; | |
2520 | if (t < tend && *t == 0xff) { /* illegal utf8 val indicates range */ | |
2521 | tlast = (I32)utf8_to_uv(++t, &ulen); | |
2522 | t += ulen; | |
2523 | } | |
2524 | else | |
2525 | tlast = tfirst; | |
2526 | } | |
2527 | ||
2528 | /* now see if we need more "r" chars */ | |
2529 | if (rfirst > rlast) { | |
2530 | if (r < rend) { | |
2531 | rfirst = (I32)utf8_to_uv(r, &ulen); | |
2532 | r += ulen; | |
2533 | if (r < rend && *r == 0xff) { /* illegal utf8 val indicates range */ | |
2534 | rlast = (I32)utf8_to_uv(++r, &ulen); | |
2535 | r += ulen; | |
2536 | } | |
2537 | else | |
2538 | rlast = rfirst; | |
2539 | } | |
2540 | else { | |
2541 | if (!havefinal++) | |
2542 | final = rlast; | |
2543 | rfirst = rlast = 0xffffffff; | |
2544 | } | |
2545 | } | |
2546 | ||
2547 | /* now see which range will peter our first, if either. */ | |
2548 | tdiff = tlast - tfirst; | |
2549 | rdiff = rlast - rfirst; | |
2550 | ||
2551 | if (tdiff <= rdiff) | |
2552 | diff = tdiff; | |
2553 | else | |
2554 | diff = rdiff; | |
2555 | ||
2556 | if (rfirst == 0xffffffff) { | |
2557 | diff = tdiff; /* oops, pretend rdiff is infinite */ | |
2558 | if (diff > 0) | |
cea2e8a9 | 2559 | Perl_sv_catpvf(aTHX_ listsv, "%04x\t%04x\tXXXX\n", tfirst, tlast); |
a0ed51b3 | 2560 | else |
cea2e8a9 | 2561 | Perl_sv_catpvf(aTHX_ listsv, "%04x\t\tXXXX\n", tfirst); |
a0ed51b3 LW |
2562 | } |
2563 | else { | |
2564 | if (diff > 0) | |
cea2e8a9 | 2565 | Perl_sv_catpvf(aTHX_ listsv, "%04x\t%04x\t%04x\n", tfirst, tfirst + diff, rfirst); |
a0ed51b3 | 2566 | else |
cea2e8a9 | 2567 | Perl_sv_catpvf(aTHX_ listsv, "%04x\t\t%04x\n", tfirst, rfirst); |
a0ed51b3 LW |
2568 | |
2569 | if (rfirst + diff > max) | |
2570 | max = rfirst + diff; | |
2571 | rfirst += diff + 1; | |
2572 | if (!grows) { | |
2573 | if (rfirst <= 0x80) | |
2574 | ; | |
2575 | else if (rfirst <= 0x800) | |
2576 | grows |= (tfirst < 0x80); | |
2577 | else if (rfirst <= 0x10000) | |
2578 | grows |= (tfirst < 0x800); | |
2579 | else if (rfirst <= 0x200000) | |
2580 | grows |= (tfirst < 0x10000); | |
2581 | else if (rfirst <= 0x4000000) | |
2582 | grows |= (tfirst < 0x200000); | |
2583 | else if (rfirst <= 0x80000000) | |
2584 | grows |= (tfirst < 0x4000000); | |
2585 | } | |
2586 | } | |
2587 | tfirst += diff + 1; | |
2588 | } | |
2589 | ||
2590 | none = ++max; | |
2591 | if (del) | |
2592 | del = ++max; | |
2593 | ||
2594 | if (max > 0xffff) | |
2595 | bits = 32; | |
2596 | else if (max > 0xff) | |
2597 | bits = 16; | |
2598 | else | |
2599 | bits = 8; | |
2600 | ||
2601 | cSVOPo->op_sv = (SV*)swash_init("utf8", "", listsv, bits, none); | |
2602 | SvREFCNT_dec(listsv); | |
2603 | if (transv) | |
2604 | SvREFCNT_dec(transv); | |
2605 | ||
2606 | if (!del && havefinal) | |
2607 | (void)hv_store((HV*)SvRV((cSVOPo->op_sv)), "FINAL", 5, newSViv((IV)final), 0); | |
2608 | ||
2609 | if (grows && to_utf) | |
2610 | o->op_private |= OPpTRANS_GROWS; | |
2611 | ||
2612 | op_free(expr); | |
2613 | op_free(repl); | |
2614 | return o; | |
2615 | } | |
2616 | ||
2617 | tbl = (short*)cPVOPo->op_pv; | |
79072805 LW |
2618 | if (complement) { |
2619 | Zero(tbl, 256, short); | |
2620 | for (i = 0; i < tlen; i++) | |
ec49126f | 2621 | tbl[t[i]] = -1; |
79072805 LW |
2622 | for (i = 0, j = 0; i < 256; i++) { |
2623 | if (!tbl[i]) { | |
2624 | if (j >= rlen) { | |
a0ed51b3 | 2625 | if (del) |
79072805 LW |
2626 | tbl[i] = -2; |
2627 | else if (rlen) | |
ec49126f | 2628 | tbl[i] = r[j-1]; |
79072805 LW |
2629 | else |
2630 | tbl[i] = i; | |
2631 | } | |
2632 | else | |
ec49126f | 2633 | tbl[i] = r[j++]; |
79072805 LW |
2634 | } |
2635 | } | |
2636 | } | |
2637 | else { | |
a0ed51b3 | 2638 | if (!rlen && !del) { |
79072805 | 2639 | r = t; rlen = tlen; |
5d06d08e | 2640 | if (!squash) |
4757a243 | 2641 | o->op_private |= OPpTRANS_IDENTICAL; |
79072805 LW |
2642 | } |
2643 | for (i = 0; i < 256; i++) | |
2644 | tbl[i] = -1; | |
2645 | for (i = 0, j = 0; i < tlen; i++,j++) { | |
2646 | if (j >= rlen) { | |
a0ed51b3 | 2647 | if (del) { |
ec49126f | 2648 | if (tbl[t[i]] == -1) |
2649 | tbl[t[i]] = -2; | |
79072805 LW |
2650 | continue; |
2651 | } | |
2652 | --j; | |
2653 | } | |
ec49126f | 2654 | if (tbl[t[i]] == -1) |
2655 | tbl[t[i]] = r[j]; | |
79072805 LW |
2656 | } |
2657 | } | |
2658 | op_free(expr); | |
2659 | op_free(repl); | |
2660 | ||
11343788 | 2661 | return o; |
79072805 LW |
2662 | } |
2663 | ||
2664 | OP * | |
864dbfa3 | 2665 | Perl_newPMOP(pTHX_ I32 type, I32 flags) |
79072805 | 2666 | { |
11343788 | 2667 | dTHR; |
79072805 LW |
2668 | PMOP *pmop; |
2669 | ||
b7dc083c | 2670 | NewOp(1101, pmop, 1, PMOP); |
79072805 | 2671 | pmop->op_type = type; |
22c35a8c | 2672 | pmop->op_ppaddr = PL_ppaddr[type]; |
79072805 | 2673 | pmop->op_flags = flags; |
c07a80fd | 2674 | pmop->op_private = 0 | (flags >> 8); |
79072805 | 2675 | |
3280af22 | 2676 | if (PL_hints & HINT_RE_TAINT) |
b3eb6a9b | 2677 | pmop->op_pmpermflags |= PMf_RETAINT; |
3280af22 | 2678 | if (PL_hints & HINT_LOCALE) |
b3eb6a9b GS |
2679 | pmop->op_pmpermflags |= PMf_LOCALE; |
2680 | pmop->op_pmflags = pmop->op_pmpermflags; | |
36477c24 | 2681 | |
79072805 | 2682 | /* link into pm list */ |
3280af22 NIS |
2683 | if (type != OP_TRANS && PL_curstash) { |
2684 | pmop->op_pmnext = HvPMROOT(PL_curstash); | |
2685 | HvPMROOT(PL_curstash) = pmop; | |
79072805 LW |
2686 | } |
2687 | ||
2688 | return (OP*)pmop; | |
2689 | } | |
2690 | ||
2691 | OP * | |
864dbfa3 | 2692 | Perl_pmruntime(pTHX_ OP *o, OP *expr, OP *repl) |
79072805 | 2693 | { |
5c0ca799 | 2694 | dTHR; |
79072805 LW |
2695 | PMOP *pm; |
2696 | LOGOP *rcop; | |
ce862d02 | 2697 | I32 repl_has_vars = 0; |
79072805 | 2698 | |
11343788 MB |
2699 | if (o->op_type == OP_TRANS) |
2700 | return pmtrans(o, expr, repl); | |
79072805 | 2701 | |
3280af22 | 2702 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 2703 | pm = (PMOP*)o; |
79072805 LW |
2704 | |
2705 | if (expr->op_type == OP_CONST) { | |
463ee0b2 | 2706 | STRLEN plen; |
79072805 | 2707 | SV *pat = ((SVOP*)expr)->op_sv; |
463ee0b2 | 2708 | char *p = SvPV(pat, plen); |
11343788 | 2709 | if ((o->op_flags & OPf_SPECIAL) && strEQ(p, " ")) { |
93a17b20 | 2710 | sv_setpvn(pat, "\\s+", 3); |
463ee0b2 | 2711 | p = SvPV(pat, plen); |
79072805 LW |
2712 | pm->op_pmflags |= PMf_SKIPWHITE; |
2713 | } | |
cea2e8a9 | 2714 | pm->op_pmregexp = CALLREGCOMP(aTHX_ p, p + plen, pm); |
aeea060c | 2715 | if (strEQ("\\s+", pm->op_pmregexp->precomp)) |
85e6fe83 | 2716 | pm->op_pmflags |= PMf_WHITE; |
79072805 LW |
2717 | op_free(expr); |
2718 | } | |
2719 | else { | |
3280af22 NIS |
2720 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) |
2721 | expr = newUNOP((!(PL_hints & HINT_RE_EVAL) | |
2cd61cdb IZ |
2722 | ? OP_REGCRESET |
2723 | : OP_REGCMAYBE),0,expr); | |
463ee0b2 | 2724 | |
b7dc083c | 2725 | NewOp(1101, rcop, 1, LOGOP); |
79072805 | 2726 | rcop->op_type = OP_REGCOMP; |
22c35a8c | 2727 | rcop->op_ppaddr = PL_ppaddr[OP_REGCOMP]; |
79072805 | 2728 | rcop->op_first = scalar(expr); |
3280af22 | 2729 | rcop->op_flags |= ((PL_hints & HINT_RE_EVAL) |
2cd61cdb IZ |
2730 | ? (OPf_SPECIAL | OPf_KIDS) |
2731 | : OPf_KIDS); | |
79072805 | 2732 | rcop->op_private = 1; |
11343788 | 2733 | rcop->op_other = o; |
79072805 LW |
2734 | |
2735 | /* establish postfix order */ | |
3280af22 | 2736 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) { |
463ee0b2 LW |
2737 | LINKLIST(expr); |
2738 | rcop->op_next = expr; | |
2739 | ((UNOP*)expr)->op_first->op_next = (OP*)rcop; | |
2740 | } | |
2741 | else { | |
2742 | rcop->op_next = LINKLIST(expr); | |
2743 | expr->op_next = (OP*)rcop; | |
2744 | } | |
79072805 | 2745 | |
11343788 | 2746 | prepend_elem(o->op_type, scalar((OP*)rcop), o); |
79072805 LW |
2747 | } |
2748 | ||
2749 | if (repl) { | |
748a9306 | 2750 | OP *curop; |
0244c3a4 | 2751 | if (pm->op_pmflags & PMf_EVAL) { |
748a9306 | 2752 | curop = 0; |
0244c3a4 GS |
2753 | if (PL_curcop->cop_line < PL_multi_end) |
2754 | PL_curcop->cop_line = PL_multi_end; | |
2755 | } | |
554b3eca | 2756 | #ifdef USE_THREADS |
2faa37cc | 2757 | else if (repl->op_type == OP_THREADSV |
554b3eca | 2758 | && strchr("&`'123456789+", |
533c011a | 2759 | PL_threadsv_names[repl->op_targ])) |
554b3eca MB |
2760 | { |
2761 | curop = 0; | |
2762 | } | |
2763 | #endif /* USE_THREADS */ | |
748a9306 LW |
2764 | else if (repl->op_type == OP_CONST) |
2765 | curop = repl; | |
79072805 | 2766 | else { |
79072805 LW |
2767 | OP *lastop = 0; |
2768 | for (curop = LINKLIST(repl); curop!=repl; curop = LINKLIST(curop)) { | |
22c35a8c | 2769 | if (PL_opargs[curop->op_type] & OA_DANGEROUS) { |
554b3eca | 2770 | #ifdef USE_THREADS |
ce862d02 IZ |
2771 | if (curop->op_type == OP_THREADSV) { |
2772 | repl_has_vars = 1; | |
be949f6f | 2773 | if (strchr("&`'123456789+", curop->op_private)) |
ce862d02 | 2774 | break; |
554b3eca MB |
2775 | } |
2776 | #else | |
79072805 LW |
2777 | if (curop->op_type == OP_GV) { |
2778 | GV *gv = ((GVOP*)curop)->op_gv; | |
ce862d02 | 2779 | repl_has_vars = 1; |
93a17b20 | 2780 | if (strchr("&`'123456789+", *GvENAME(gv))) |
79072805 LW |
2781 | break; |
2782 | } | |
554b3eca | 2783 | #endif /* USE_THREADS */ |
79072805 LW |
2784 | else if (curop->op_type == OP_RV2CV) |
2785 | break; | |
2786 | else if (curop->op_type == OP_RV2SV || | |
2787 | curop->op_type == OP_RV2AV || | |
2788 | curop->op_type == OP_RV2HV || | |
2789 | curop->op_type == OP_RV2GV) { | |
2790 | if (lastop && lastop->op_type != OP_GV) /*funny deref?*/ | |
2791 | break; | |
2792 | } | |
748a9306 LW |
2793 | else if (curop->op_type == OP_PADSV || |
2794 | curop->op_type == OP_PADAV || | |
2795 | curop->op_type == OP_PADHV || | |
554b3eca | 2796 | curop->op_type == OP_PADANY) { |
ce862d02 | 2797 | repl_has_vars = 1; |
748a9306 | 2798 | } |
1167e5da SM |
2799 | else if (curop->op_type == OP_PUSHRE) |
2800 | ; /* Okay here, dangerous in newASSIGNOP */ | |
79072805 LW |
2801 | else |
2802 | break; | |
2803 | } | |
2804 | lastop = curop; | |
2805 | } | |
748a9306 | 2806 | } |
ce862d02 IZ |
2807 | if (curop == repl |
2808 | && !(repl_has_vars | |
2809 | && (!pm->op_pmregexp | |
2810 | || pm->op_pmregexp->reganch & ROPT_EVAL_SEEN))) { | |
748a9306 | 2811 | pm->op_pmflags |= PMf_CONST; /* const for long enough */ |
4633a7c4 | 2812 | pm->op_pmpermflags |= PMf_CONST; /* const for long enough */ |
11343788 | 2813 | prepend_elem(o->op_type, scalar(repl), o); |
748a9306 LW |
2814 | } |
2815 | else { | |
ce862d02 IZ |
2816 | if (curop == repl && !pm->op_pmregexp) { /* Has variables. */ |
2817 | pm->op_pmflags |= PMf_MAYBE_CONST; | |
2818 | pm->op_pmpermflags |= PMf_MAYBE_CONST; | |
2819 | } | |
b7dc083c | 2820 | NewOp(1101, rcop, 1, LOGOP); |
748a9306 | 2821 | rcop->op_type = OP_SUBSTCONT; |
22c35a8c | 2822 | rcop->op_ppaddr = PL_ppaddr[OP_SUBSTCONT]; |
748a9306 LW |
2823 | rcop->op_first = scalar(repl); |
2824 | rcop->op_flags |= OPf_KIDS; | |
2825 | rcop->op_private = 1; | |
11343788 | 2826 | rcop->op_other = o; |
748a9306 LW |
2827 | |
2828 | /* establish postfix order */ | |
2829 | rcop->op_next = LINKLIST(repl); | |
2830 | repl->op_next = (OP*)rcop; | |
2831 | ||
2832 | pm->op_pmreplroot = scalar((OP*)rcop); | |
2833 | pm->op_pmreplstart = LINKLIST(rcop); | |
2834 | rcop->op_next = 0; | |
79072805 LW |
2835 | } |
2836 | } | |
2837 | ||
2838 | return (OP*)pm; | |
2839 | } | |
2840 | ||
2841 | OP * | |
864dbfa3 | 2842 | Perl_newSVOP(pTHX_ I32 type, I32 flags, SV *sv) |
79072805 LW |
2843 | { |
2844 | SVOP *svop; | |
b7dc083c | 2845 | NewOp(1101, svop, 1, SVOP); |
79072805 | 2846 | svop->op_type = type; |
22c35a8c | 2847 | svop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2848 | svop->op_sv = sv; |
2849 | svop->op_next = (OP*)svop; | |
2850 | svop->op_flags = flags; | |
22c35a8c | 2851 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 2852 | scalar((OP*)svop); |
22c35a8c | 2853 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 2854 | svop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2855 | return CHECKOP(type, svop); |
79072805 LW |
2856 | } |
2857 | ||
2858 | OP * | |
864dbfa3 | 2859 | Perl_newGVOP(pTHX_ I32 type, I32 flags, GV *gv) |
79072805 | 2860 | { |
11343788 | 2861 | dTHR; |
79072805 | 2862 | GVOP *gvop; |
b7dc083c | 2863 | NewOp(1101, gvop, 1, GVOP); |
79072805 | 2864 | gvop->op_type = type; |
22c35a8c | 2865 | gvop->op_ppaddr = PL_ppaddr[type]; |
8990e307 | 2866 | gvop->op_gv = (GV*)SvREFCNT_inc(gv); |
79072805 LW |
2867 | gvop->op_next = (OP*)gvop; |
2868 | gvop->op_flags = flags; | |
22c35a8c | 2869 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 2870 | scalar((OP*)gvop); |
22c35a8c | 2871 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 2872 | gvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2873 | return CHECKOP(type, gvop); |
79072805 LW |
2874 | } |
2875 | ||
2876 | OP * | |
864dbfa3 | 2877 | Perl_newPVOP(pTHX_ I32 type, I32 flags, char *pv) |
79072805 LW |
2878 | { |
2879 | PVOP *pvop; | |
b7dc083c | 2880 | NewOp(1101, pvop, 1, PVOP); |
79072805 | 2881 | pvop->op_type = type; |
22c35a8c | 2882 | pvop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2883 | pvop->op_pv = pv; |
2884 | pvop->op_next = (OP*)pvop; | |
2885 | pvop->op_flags = flags; | |
22c35a8c | 2886 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 2887 | scalar((OP*)pvop); |
22c35a8c | 2888 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 2889 | pvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 2890 | return CHECKOP(type, pvop); |
79072805 LW |
2891 | } |
2892 | ||
79072805 | 2893 | void |
864dbfa3 | 2894 | Perl_package(pTHX_ OP *o) |
79072805 | 2895 | { |
11343788 | 2896 | dTHR; |
93a17b20 | 2897 | SV *sv; |
79072805 | 2898 | |
3280af22 NIS |
2899 | save_hptr(&PL_curstash); |
2900 | save_item(PL_curstname); | |
11343788 | 2901 | if (o) { |
463ee0b2 LW |
2902 | STRLEN len; |
2903 | char *name; | |
11343788 | 2904 | sv = cSVOPo->op_sv; |
463ee0b2 | 2905 | name = SvPV(sv, len); |
3280af22 NIS |
2906 | PL_curstash = gv_stashpvn(name,len,TRUE); |
2907 | sv_setpvn(PL_curstname, name, len); | |
11343788 | 2908 | op_free(o); |
93a17b20 LW |
2909 | } |
2910 | else { | |
3280af22 NIS |
2911 | sv_setpv(PL_curstname,"<none>"); |
2912 | PL_curstash = Nullhv; | |
93a17b20 | 2913 | } |
7ad382f4 | 2914 | PL_hints |= HINT_BLOCK_SCOPE; |
3280af22 NIS |
2915 | PL_copline = NOLINE; |
2916 | PL_expect = XSTATE; | |
79072805 LW |
2917 | } |
2918 | ||
85e6fe83 | 2919 | void |
864dbfa3 | 2920 | Perl_utilize(pTHX_ int aver, I32 floor, OP *version, OP *id, OP *arg) |
85e6fe83 | 2921 | { |
a0d0e21e LW |
2922 | OP *pack; |
2923 | OP *meth; | |
2924 | OP *rqop; | |
2925 | OP *imop; | |
b1cb66bf | 2926 | OP *veop; |
78ca652e | 2927 | GV *gv; |
85e6fe83 | 2928 | |
a0d0e21e | 2929 | if (id->op_type != OP_CONST) |
cea2e8a9 | 2930 | Perl_croak(aTHX_ "Module name must be constant"); |
85e6fe83 | 2931 | |
b1cb66bf | 2932 | veop = Nullop; |
2933 | ||
2934 | if(version != Nullop) { | |
2935 | SV *vesv = ((SVOP*)version)->op_sv; | |
2936 | ||
2937 | if (arg == Nullop && !SvNIOK(vesv)) { | |
2938 | arg = version; | |
2939 | } | |
2940 | else { | |
2941 | OP *pack; | |
b1cb66bf | 2942 | |
2943 | if (version->op_type != OP_CONST || !SvNIOK(vesv)) | |
cea2e8a9 | 2944 | Perl_croak(aTHX_ "Version number must be constant number"); |
b1cb66bf | 2945 | |
2946 | /* Make copy of id so we don't free it twice */ | |
2947 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); | |
2948 | ||
2949 | /* Fake up a method call to VERSION */ | |
b1cb66bf | 2950 | veop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, |
2951 | append_elem(OP_LIST, | |
2952 | prepend_elem(OP_LIST, pack, list(version)), | |
f5d5a27c CS |
2953 | newSVOP(OP_METHOD_NAMED, 0, |
2954 | newSVpvn("VERSION", 7)))); | |
b1cb66bf | 2955 | } |
2956 | } | |
aeea060c | 2957 | |
a0d0e21e | 2958 | /* Fake up an import/unimport */ |
4633a7c4 LW |
2959 | if (arg && arg->op_type == OP_STUB) |
2960 | imop = arg; /* no import on explicit () */ | |
b1cb66bf | 2961 | else if(SvNIOK(((SVOP*)id)->op_sv)) { |
2962 | imop = Nullop; /* use 5.0; */ | |
2963 | } | |
4633a7c4 LW |
2964 | else { |
2965 | /* Make copy of id so we don't free it twice */ | |
2966 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); | |
4633a7c4 | 2967 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, |
a0d0e21e LW |
2968 | append_elem(OP_LIST, |
2969 | prepend_elem(OP_LIST, pack, list(arg)), | |
f5d5a27c CS |
2970 | newSVOP(OP_METHOD_NAMED, 0, |
2971 | aver ? newSVpvn("import", 6) | |
2972 | : newSVpvn("unimport", 8)))); | |
4633a7c4 LW |
2973 | } |
2974 | ||
78ca652e GS |
2975 | /* Fake up a require, handle override, if any */ |
2976 | gv = gv_fetchpv("require", FALSE, SVt_PVCV); | |
2977 | if (!(gv && GvIMPORTED_CV(gv))) | |
2978 | gv = gv_fetchpv("CORE::GLOBAL::require", FALSE, SVt_PVCV); | |
2979 | ||
2980 | if (gv && GvIMPORTED_CV(gv)) { | |
2981 | rqop = ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, | |
2982 | append_elem(OP_LIST, id, | |
2983 | scalar(newUNOP(OP_RV2CV, 0, | |
2984 | newGVOP(OP_GV, 0, | |
2985 | gv)))))); | |
2986 | } | |
2987 | else { | |
2988 | rqop = newUNOP(OP_REQUIRE, 0, id); | |
2989 | } | |
a0d0e21e LW |
2990 | |
2991 | /* Fake up the BEGIN {}, which does its thing immediately. */ | |
09bef843 | 2992 | newATTRSUB(floor, |
79cb57f6 | 2993 | newSVOP(OP_CONST, 0, newSVpvn("BEGIN", 5)), |
4633a7c4 | 2994 | Nullop, |
09bef843 | 2995 | Nullop, |
a0d0e21e | 2996 | append_elem(OP_LINESEQ, |
b1cb66bf | 2997 | append_elem(OP_LINESEQ, |
2998 | newSTATEOP(0, Nullch, rqop), | |
2999 | newSTATEOP(0, Nullch, veop)), | |
a0d0e21e | 3000 | newSTATEOP(0, Nullch, imop) )); |
85e6fe83 | 3001 | |
3280af22 NIS |
3002 | PL_copline = NOLINE; |
3003 | PL_expect = XSTATE; | |
85e6fe83 LW |
3004 | } |
3005 | ||
79072805 | 3006 | OP * |
864dbfa3 | 3007 | Perl_dofile(pTHX_ OP *term) |
78ca652e GS |
3008 | { |
3009 | OP *doop; | |
3010 | GV *gv; | |
3011 | ||
3012 | gv = gv_fetchpv("do", FALSE, SVt_PVCV); | |
3013 | if (!(gv && GvIMPORTED_CV(gv))) | |
3014 | gv = gv_fetchpv("CORE::GLOBAL::do", FALSE, SVt_PVCV); | |
3015 | ||
3016 | if (gv && GvIMPORTED_CV(gv)) { | |
3017 | doop = ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, | |
3018 | append_elem(OP_LIST, term, | |
3019 | scalar(newUNOP(OP_RV2CV, 0, | |
3020 | newGVOP(OP_GV, 0, | |
3021 | gv)))))); | |
3022 | } | |
3023 | else { | |
3024 | doop = newUNOP(OP_DOFILE, 0, scalar(term)); | |
3025 | } | |
3026 | return doop; | |
3027 | } | |
3028 | ||
3029 | OP * | |
864dbfa3 | 3030 | Perl_newSLICEOP(pTHX_ I32 flags, OP *subscript, OP *listval) |
79072805 LW |
3031 | { |
3032 | return newBINOP(OP_LSLICE, flags, | |
8990e307 LW |
3033 | list(force_list(subscript)), |
3034 | list(force_list(listval)) ); | |
79072805 LW |
3035 | } |
3036 | ||
76e3520e | 3037 | STATIC I32 |
cea2e8a9 | 3038 | S_list_assignment(pTHX_ register OP *o) |
79072805 | 3039 | { |
11343788 | 3040 | if (!o) |
79072805 LW |
3041 | return TRUE; |
3042 | ||
11343788 MB |
3043 | if (o->op_type == OP_NULL && o->op_flags & OPf_KIDS) |
3044 | o = cUNOPo->op_first; | |
79072805 | 3045 | |
11343788 | 3046 | if (o->op_type == OP_COND_EXPR) { |
1a67a97c SM |
3047 | I32 t = list_assignment(cLOGOPo->op_first->op_sibling); |
3048 | I32 f = list_assignment(cLOGOPo->op_first->op_sibling->op_sibling); | |
79072805 LW |
3049 | |
3050 | if (t && f) | |
3051 | return TRUE; | |
3052 | if (t || f) | |
3053 | yyerror("Assignment to both a list and a scalar"); | |
3054 | return FALSE; | |
3055 | } | |
3056 | ||
11343788 MB |
3057 | if (o->op_type == OP_LIST || o->op_flags & OPf_PARENS || |
3058 | o->op_type == OP_RV2AV || o->op_type == OP_RV2HV || | |
3059 | o->op_type == OP_ASLICE || o->op_type == OP_HSLICE) | |
79072805 LW |
3060 | return TRUE; |
3061 | ||
11343788 | 3062 | if (o->op_type == OP_PADAV || o->op_type == OP_PADHV) |
93a17b20 LW |
3063 | return TRUE; |
3064 | ||
11343788 | 3065 | if (o->op_type == OP_RV2SV) |
79072805 LW |
3066 | return FALSE; |
3067 | ||
3068 | return FALSE; | |
3069 | } | |
3070 | ||
3071 | OP * | |
864dbfa3 | 3072 | Perl_newASSIGNOP(pTHX_ I32 flags, OP *left, I32 optype, OP *right) |
79072805 | 3073 | { |
11343788 | 3074 | OP *o; |
79072805 | 3075 | |
a0d0e21e LW |
3076 | if (optype) { |
3077 | if (optype == OP_ANDASSIGN || optype == OP_ORASSIGN) { | |
3078 | return newLOGOP(optype, 0, | |
3079 | mod(scalar(left), optype), | |
3080 | newUNOP(OP_SASSIGN, 0, scalar(right))); | |
3081 | } | |
3082 | else { | |
3083 | return newBINOP(optype, OPf_STACKED, | |
3084 | mod(scalar(left), optype), scalar(right)); | |
3085 | } | |
3086 | } | |
3087 | ||
79072805 | 3088 | if (list_assignment(left)) { |
6ee623d5 | 3089 | dTHR; |
3280af22 NIS |
3090 | PL_modcount = 0; |
3091 | PL_eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ | |
463ee0b2 | 3092 | left = mod(left, OP_AASSIGN); |
3280af22 NIS |
3093 | if (PL_eval_start) |
3094 | PL_eval_start = 0; | |
748a9306 | 3095 | else { |
a0d0e21e LW |
3096 | op_free(left); |
3097 | op_free(right); | |
3098 | return Nullop; | |
3099 | } | |
11343788 | 3100 | o = newBINOP(OP_AASSIGN, flags, |
8990e307 LW |
3101 | list(force_list(right)), |
3102 | list(force_list(left)) ); | |
11343788 | 3103 | o->op_private = 0 | (flags >> 8); |
a0d0e21e | 3104 | if (!(left->op_private & OPpLVAL_INTRO)) { |
79072805 | 3105 | OP *curop; |
11343788 | 3106 | OP *lastop = o; |
3280af22 | 3107 | PL_generation++; |
11343788 | 3108 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
22c35a8c | 3109 | if (PL_opargs[curop->op_type] & OA_DANGEROUS) { |
79072805 LW |
3110 | if (curop->op_type == OP_GV) { |
3111 | GV *gv = ((GVOP*)curop)->op_gv; | |
3280af22 | 3112 | if (gv == PL_defgv || SvCUR(gv) == PL_generation) |
79072805 | 3113 | break; |
3280af22 | 3114 | SvCUR(gv) = PL_generation; |
79072805 | 3115 | } |
748a9306 LW |
3116 | else if (curop->op_type == OP_PADSV || |
3117 | curop->op_type == OP_PADAV || | |
3118 | curop->op_type == OP_PADHV || | |
3119 | curop->op_type == OP_PADANY) { | |
3280af22 | 3120 | SV **svp = AvARRAY(PL_comppad_name); |
8e07c86e | 3121 | SV *sv = svp[curop->op_targ]; |
3280af22 | 3122 | if (SvCUR(sv) == PL_generation) |
748a9306 | 3123 | break; |
3280af22 | 3124 | SvCUR(sv) = PL_generation; /* (SvCUR not used any more) */ |
748a9306 | 3125 | } |
79072805 LW |
3126 | else if (curop->op_type == OP_RV2CV) |
3127 | break; | |
3128 | else if (curop->op_type == OP_RV2SV || | |
3129 | curop->op_type == OP_RV2AV || | |
3130 | curop->op_type == OP_RV2HV || | |
3131 | curop->op_type == OP_RV2GV) { | |
3132 | if (lastop->op_type != OP_GV) /* funny deref? */ | |
3133 | break; | |
3134 | } | |
1167e5da SM |
3135 | else if (curop->op_type == OP_PUSHRE) { |
3136 | if (((PMOP*)curop)->op_pmreplroot) { | |
3137 | GV *gv = (GV*)((PMOP*)curop)->op_pmreplroot; | |
3280af22 | 3138 | if (gv == PL_defgv || SvCUR(gv) == PL_generation) |
1167e5da | 3139 | break; |
3280af22 | 3140 | SvCUR(gv) = PL_generation; |
1167e5da SM |
3141 | } |
3142 | } | |
79072805 LW |
3143 | else |
3144 | break; | |
3145 | } | |
3146 | lastop = curop; | |
3147 | } | |
11343788 MB |
3148 | if (curop != o) |
3149 | o->op_private = OPpASSIGN_COMMON; | |
79072805 | 3150 | } |
c07a80fd | 3151 | if (right && right->op_type == OP_SPLIT) { |
3152 | OP* tmpop; | |
3153 | if ((tmpop = ((LISTOP*)right)->op_first) && | |
3154 | tmpop->op_type == OP_PUSHRE) | |
3155 | { | |
3156 | PMOP *pm = (PMOP*)tmpop; | |
3157 | if (left->op_type == OP_RV2AV && | |
3158 | !(left->op_private & OPpLVAL_INTRO) && | |
11343788 | 3159 | !(o->op_private & OPpASSIGN_COMMON) ) |
c07a80fd | 3160 | { |
3161 | tmpop = ((UNOP*)left)->op_first; | |
3162 | if (tmpop->op_type == OP_GV && !pm->op_pmreplroot) { | |
3163 | pm->op_pmreplroot = (OP*)((GVOP*)tmpop)->op_gv; | |
3164 | pm->op_pmflags |= PMf_ONCE; | |
11343788 | 3165 | tmpop = cUNOPo->op_first; /* to list (nulled) */ |
c07a80fd | 3166 | tmpop = ((UNOP*)tmpop)->op_first; /* to pushmark */ |
3167 | tmpop->op_sibling = Nullop; /* don't free split */ | |
3168 | right->op_next = tmpop->op_next; /* fix starting loc */ | |
11343788 | 3169 | op_free(o); /* blow off assign */ |
54310121 | 3170 | right->op_flags &= ~OPf_WANT; |
a5f75d66 | 3171 | /* "I don't know and I don't care." */ |
c07a80fd | 3172 | return right; |
3173 | } | |
3174 | } | |
3175 | else { | |
3280af22 | 3176 | if (PL_modcount < 10000 && |
c07a80fd | 3177 | ((LISTOP*)right)->op_last->op_type == OP_CONST) |
3178 | { | |
3179 | SV *sv = ((SVOP*)((LISTOP*)right)->op_last)->op_sv; | |
3180 | if (SvIVX(sv) == 0) | |
3280af22 | 3181 | sv_setiv(sv, PL_modcount+1); |
c07a80fd | 3182 | } |
3183 | } | |
3184 | } | |
3185 | } | |
11343788 | 3186 | return o; |
79072805 LW |
3187 | } |
3188 | if (!right) | |
3189 | right = newOP(OP_UNDEF, 0); | |
3190 | if (right->op_type == OP_READLINE) { | |
3191 | right->op_flags |= OPf_STACKED; | |
463ee0b2 | 3192 | return newBINOP(OP_NULL, flags, mod(scalar(left), OP_SASSIGN), scalar(right)); |
79072805 | 3193 | } |
a0d0e21e | 3194 | else { |
3280af22 | 3195 | PL_eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ |
11343788 | 3196 | o = newBINOP(OP_SASSIGN, flags, |
463ee0b2 | 3197 | scalar(right), mod(scalar(left), OP_SASSIGN) ); |
3280af22 NIS |
3198 | if (PL_eval_start) |
3199 | PL_eval_start = 0; | |
748a9306 | 3200 | else { |
11343788 | 3201 | op_free(o); |
a0d0e21e LW |
3202 | return Nullop; |
3203 | } | |
3204 | } | |
11343788 | 3205 | return o; |
79072805 LW |
3206 | } |
3207 | ||
3208 | OP * | |
864dbfa3 | 3209 | Perl_newSTATEOP(pTHX_ I32 flags, char *label, OP *o) |
79072805 | 3210 | { |
11343788 | 3211 | dTHR; |
bbce6d69 | 3212 | U32 seq = intro_my(); |
79072805 LW |
3213 | register COP *cop; |
3214 | ||
b7dc083c | 3215 | NewOp(1101, cop, 1, COP); |
3280af22 | 3216 | if (PERLDB_LINE && PL_curcop->cop_line && PL_curstash != PL_debstash) { |
8990e307 | 3217 | cop->op_type = OP_DBSTATE; |
22c35a8c | 3218 | cop->op_ppaddr = PL_ppaddr[ OP_DBSTATE ]; |
8990e307 LW |
3219 | } |
3220 | else { | |
3221 | cop->op_type = OP_NEXTSTATE; | |
22c35a8c | 3222 | cop->op_ppaddr = PL_ppaddr[ OP_NEXTSTATE ]; |
8990e307 | 3223 | } |
79072805 | 3224 | cop->op_flags = flags; |
a0ed51b3 | 3225 | cop->op_private = (PL_hints & HINT_UTF8); |
ff0cee69 | 3226 | #ifdef NATIVE_HINTS |
3227 | cop->op_private |= NATIVE_HINTS; | |
3228 | #endif | |
e24b16f9 | 3229 | PL_compiling.op_private = cop->op_private; |
79072805 LW |
3230 | cop->op_next = (OP*)cop; |
3231 | ||
463ee0b2 LW |
3232 | if (label) { |
3233 | cop->cop_label = label; | |
3280af22 | 3234 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 3235 | } |
bbce6d69 | 3236 | cop->cop_seq = seq; |
3280af22 | 3237 | cop->cop_arybase = PL_curcop->cop_arybase; |
0453d815 | 3238 | if (specialWARN(PL_curcop->cop_warnings)) |
599cee73 PM |
3239 | cop->cop_warnings = PL_curcop->cop_warnings ; |
3240 | else | |
3241 | cop->cop_warnings = newSVsv(PL_curcop->cop_warnings) ; | |
3242 | ||
79072805 | 3243 | |
3280af22 NIS |
3244 | if (PL_copline == NOLINE) |
3245 | cop->cop_line = PL_curcop->cop_line; | |
79072805 | 3246 | else { |
3280af22 NIS |
3247 | cop->cop_line = PL_copline; |
3248 | PL_copline = NOLINE; | |
79072805 | 3249 | } |
3280af22 NIS |
3250 | cop->cop_filegv = (GV*)SvREFCNT_inc(PL_curcop->cop_filegv); |
3251 | cop->cop_stash = PL_curstash; | |
79072805 | 3252 | |
3280af22 NIS |
3253 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
3254 | SV **svp = av_fetch(GvAV(PL_curcop->cop_filegv),(I32)cop->cop_line, FALSE); | |
3255 | if (svp && *svp != &PL_sv_undef && !SvIOK(*svp)) { | |
a0d0e21e | 3256 | (void)SvIOK_on(*svp); |
a5f75d66 | 3257 | SvIVX(*svp) = 1; |
93a17b20 LW |
3258 | SvSTASH(*svp) = (HV*)cop; |
3259 | } | |
3260 | } | |
3261 | ||
11343788 | 3262 | return prepend_elem(OP_LINESEQ, (OP*)cop, o); |
79072805 LW |
3263 | } |
3264 | ||
bbce6d69 | 3265 | /* "Introduce" my variables to visible status. */ |
3266 | U32 | |
864dbfa3 | 3267 | Perl_intro_my(pTHX) |
bbce6d69 | 3268 | { |
3269 | SV **svp; | |
3270 | SV *sv; | |
3271 | I32 i; | |
3272 | ||
3280af22 NIS |
3273 | if (! PL_min_intro_pending) |
3274 | return PL_cop_seqmax; | |
bbce6d69 | 3275 | |
3280af22 NIS |
3276 | svp = AvARRAY(PL_comppad_name); |
3277 | for (i = PL_min_intro_pending; i <= PL_max_intro_pending; i++) { | |
3278 | if ((sv = svp[i]) && sv != &PL_sv_undef && !SvIVX(sv)) { | |
c53d7c7d | 3279 | SvIVX(sv) = PAD_MAX; /* Don't know scope end yet. */ |
65202027 | 3280 | SvNVX(sv) = (NV)PL_cop_seqmax; |
bbce6d69 | 3281 | } |
3282 | } | |
3280af22 NIS |
3283 | PL_min_intro_pending = 0; |
3284 | PL_comppad_name_fill = PL_max_intro_pending; /* Needn't search higher */ | |
3285 | return PL_cop_seqmax++; | |
bbce6d69 | 3286 | } |
3287 | ||
79072805 | 3288 | OP * |
864dbfa3 | 3289 | Perl_newLOGOP(pTHX_ I32 type, I32 flags, OP *first, OP *other) |
79072805 | 3290 | { |
883ffac3 CS |
3291 | return new_logop(type, flags, &first, &other); |
3292 | } | |
3293 | ||
3bd495df | 3294 | STATIC OP * |
cea2e8a9 | 3295 | S_new_logop(pTHX_ I32 type, I32 flags, OP** firstp, OP** otherp) |
883ffac3 | 3296 | { |
11343788 | 3297 | dTHR; |
79072805 | 3298 | LOGOP *logop; |
11343788 | 3299 | OP *o; |
883ffac3 CS |
3300 | OP *first = *firstp; |
3301 | OP *other = *otherp; | |
79072805 | 3302 | |
a0d0e21e LW |
3303 | if (type == OP_XOR) /* Not short circuit, but here by precedence. */ |
3304 | return newBINOP(type, flags, scalar(first), scalar(other)); | |
3305 | ||
8990e307 | 3306 | scalarboolean(first); |
79072805 LW |
3307 | /* optimize "!a && b" to "a || b", and "!a || b" to "a && b" */ |
3308 | if (first->op_type == OP_NOT && (first->op_flags & OPf_SPECIAL)) { | |
3309 | if (type == OP_AND || type == OP_OR) { | |
3310 | if (type == OP_AND) | |
3311 | type = OP_OR; | |
3312 | else | |
3313 | type = OP_AND; | |
11343788 | 3314 | o = first; |
883ffac3 | 3315 | first = *firstp = cUNOPo->op_first; |
11343788 MB |
3316 | if (o->op_next) |
3317 | first->op_next = o->op_next; | |
3318 | cUNOPo->op_first = Nullop; | |
3319 | op_free(o); | |
79072805 LW |
3320 | } |
3321 | } | |
3322 | if (first->op_type == OP_CONST) { | |
599cee73 | 3323 | if (ckWARN(WARN_PRECEDENCE) && (first->op_private & OPpCONST_BARE)) |
cea2e8a9 | 3324 | Perl_warner(aTHX_ WARN_PRECEDENCE, "Probable precedence problem on %s", |
22c35a8c | 3325 | PL_op_desc[type]); |
79072805 LW |
3326 | if ((type == OP_AND) == (SvTRUE(((SVOP*)first)->op_sv))) { |
3327 | op_free(first); | |
883ffac3 | 3328 | *firstp = Nullop; |
79072805 LW |
3329 | return other; |
3330 | } | |
3331 | else { | |
3332 | op_free(other); | |
883ffac3 | 3333 | *otherp = Nullop; |
79072805 LW |
3334 | return first; |
3335 | } | |
3336 | } | |
3337 | else if (first->op_type == OP_WANTARRAY) { | |
3338 | if (type == OP_AND) | |
3339 | list(other); | |
3340 | else | |
3341 | scalar(other); | |
3342 | } | |
599cee73 | 3343 | else if (ckWARN(WARN_UNSAFE) && (first->op_flags & OPf_KIDS)) { |
a6006777 | 3344 | OP *k1 = ((UNOP*)first)->op_first; |
3345 | OP *k2 = k1->op_sibling; | |
3346 | OPCODE warnop = 0; | |
3347 | switch (first->op_type) | |
3348 | { | |
3349 | case OP_NULL: | |
3350 | if (k2 && k2->op_type == OP_READLINE | |
3351 | && (k2->op_flags & OPf_STACKED) | |
55d729e4 | 3352 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
a6006777 | 3353 | warnop = k2->op_type; |
3354 | break; | |
3355 | ||
3356 | case OP_SASSIGN: | |
68dc0745 | 3357 | if (k1->op_type == OP_READDIR |
3358 | || k1->op_type == OP_GLOB | |
3359 | || k1->op_type == OP_EACH) | |
a6006777 | 3360 | warnop = k1->op_type; |
3361 | break; | |
3362 | } | |
8ebc5c01 | 3363 | if (warnop) { |
3280af22 NIS |
3364 | line_t oldline = PL_curcop->cop_line; |
3365 | PL_curcop->cop_line = PL_copline; | |
cea2e8a9 | 3366 | Perl_warner(aTHX_ WARN_UNSAFE, |
599cee73 | 3367 | "Value of %s%s can be \"0\"; test with defined()", |
22c35a8c | 3368 | PL_op_desc[warnop], |
68dc0745 | 3369 | ((warnop == OP_READLINE || warnop == OP_GLOB) |
3370 | ? " construct" : "() operator")); | |
3280af22 | 3371 | PL_curcop->cop_line = oldline; |
8ebc5c01 | 3372 | } |
a6006777 | 3373 | } |
79072805 LW |
3374 | |
3375 | if (!other) | |
3376 | return first; | |
3377 | ||
a0d0e21e LW |
3378 | if (type == OP_ANDASSIGN || type == OP_ORASSIGN) |
3379 | other->op_private |= OPpASSIGN_BACKWARDS; /* other is an OP_SASSIGN */ | |
3380 | ||
b7dc083c | 3381 | NewOp(1101, logop, 1, LOGOP); |
79072805 LW |
3382 | |
3383 | logop->op_type = type; | |
22c35a8c | 3384 | logop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
3385 | logop->op_first = first; |
3386 | logop->op_flags = flags | OPf_KIDS; | |
3387 | logop->op_other = LINKLIST(other); | |
c07a80fd | 3388 | logop->op_private = 1 | (flags >> 8); |
79072805 LW |
3389 | |
3390 | /* establish postfix order */ | |
3391 | logop->op_next = LINKLIST(first); | |
3392 | first->op_next = (OP*)logop; | |
3393 | first->op_sibling = other; | |
3394 | ||
11343788 MB |
3395 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
3396 | other->op_next = o; | |
79072805 | 3397 | |
11343788 | 3398 | return o; |
79072805 LW |
3399 | } |
3400 | ||
3401 | OP * | |
864dbfa3 | 3402 | Perl_newCONDOP(pTHX_ I32 flags, OP *first, OP *trueop, OP *falseop) |
79072805 | 3403 | { |
11343788 | 3404 | dTHR; |
1a67a97c SM |
3405 | LOGOP *logop; |
3406 | OP *start; | |
11343788 | 3407 | OP *o; |
79072805 | 3408 | |
b1cb66bf | 3409 | if (!falseop) |
3410 | return newLOGOP(OP_AND, 0, first, trueop); | |
3411 | if (!trueop) | |
3412 | return newLOGOP(OP_OR, 0, first, falseop); | |
79072805 | 3413 | |
8990e307 | 3414 | scalarboolean(first); |
79072805 LW |
3415 | if (first->op_type == OP_CONST) { |
3416 | if (SvTRUE(((SVOP*)first)->op_sv)) { | |
3417 | op_free(first); | |
b1cb66bf | 3418 | op_free(falseop); |
3419 | return trueop; | |
79072805 LW |
3420 | } |
3421 | else { | |
3422 | op_free(first); | |
b1cb66bf | 3423 | op_free(trueop); |
3424 | return falseop; | |
79072805 LW |
3425 | } |
3426 | } | |
3427 | else if (first->op_type == OP_WANTARRAY) { | |
b1cb66bf | 3428 | list(trueop); |
3429 | scalar(falseop); | |
79072805 | 3430 | } |
1a67a97c SM |
3431 | NewOp(1101, logop, 1, LOGOP); |
3432 | logop->op_type = OP_COND_EXPR; | |
3433 | logop->op_ppaddr = PL_ppaddr[OP_COND_EXPR]; | |
3434 | logop->op_first = first; | |
3435 | logop->op_flags = flags | OPf_KIDS; | |
3436 | logop->op_private = 1 | (flags >> 8); | |
3437 | logop->op_other = LINKLIST(trueop); | |
3438 | logop->op_next = LINKLIST(falseop); | |
79072805 | 3439 | |
79072805 LW |
3440 | |
3441 | /* establish postfix order */ | |
1a67a97c SM |
3442 | start = LINKLIST(first); |
3443 | first->op_next = (OP*)logop; | |
79072805 | 3444 | |
b1cb66bf | 3445 | first->op_sibling = trueop; |
3446 | trueop->op_sibling = falseop; | |
1a67a97c | 3447 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
79072805 | 3448 | |
1a67a97c | 3449 | trueop->op_next = falseop->op_next = o; |
79072805 | 3450 | |
1a67a97c | 3451 | o->op_next = start; |
11343788 | 3452 | return o; |
79072805 LW |
3453 | } |
3454 | ||
3455 | OP * | |
864dbfa3 | 3456 | Perl_newRANGE(pTHX_ I32 flags, OP *left, OP *right) |
79072805 | 3457 | { |
b35b2403 | 3458 | dTHR; |
1a67a97c | 3459 | LOGOP *range; |
79072805 LW |
3460 | OP *flip; |
3461 | OP *flop; | |
1a67a97c | 3462 | OP *leftstart; |
11343788 | 3463 | OP *o; |
79072805 | 3464 | |
1a67a97c | 3465 | NewOp(1101, range, 1, LOGOP); |
79072805 | 3466 | |
1a67a97c SM |
3467 | range->op_type = OP_RANGE; |
3468 | range->op_ppaddr = PL_ppaddr[OP_RANGE]; | |
3469 | range->op_first = left; | |
3470 | range->op_flags = OPf_KIDS; | |
3471 | leftstart = LINKLIST(left); | |
3472 | range->op_other = LINKLIST(right); | |
3473 | range->op_private = 1 | (flags >> 8); | |
79072805 LW |
3474 | |
3475 | left->op_sibling = right; | |
3476 | ||
1a67a97c SM |
3477 | range->op_next = (OP*)range; |
3478 | flip = newUNOP(OP_FLIP, flags, (OP*)range); | |
79072805 | 3479 | flop = newUNOP(OP_FLOP, 0, flip); |
11343788 | 3480 | o = newUNOP(OP_NULL, 0, flop); |
79072805 | 3481 | linklist(flop); |
1a67a97c | 3482 | range->op_next = leftstart; |
79072805 LW |
3483 | |
3484 | left->op_next = flip; | |
3485 | right->op_next = flop; | |
3486 | ||
1a67a97c SM |
3487 | range->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
3488 | sv_upgrade(PAD_SV(range->op_targ), SVt_PVNV); | |
ed6116ce | 3489 | flip->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 LW |
3490 | sv_upgrade(PAD_SV(flip->op_targ), SVt_PVNV); |
3491 | ||
3492 | flip->op_private = left->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
3493 | flop->op_private = right->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
3494 | ||
11343788 | 3495 | flip->op_next = o; |
79072805 | 3496 | if (!flip->op_private || !flop->op_private) |
11343788 | 3497 | linklist(o); /* blow off optimizer unless constant */ |
79072805 | 3498 | |
11343788 | 3499 | return o; |
79072805 LW |
3500 | } |
3501 | ||
3502 | OP * | |
864dbfa3 | 3503 | Perl_newLOOPOP(pTHX_ I32 flags, I32 debuggable, OP *expr, OP *block) |
79072805 | 3504 | { |
11343788 | 3505 | dTHR; |
463ee0b2 | 3506 | OP* listop; |
11343788 | 3507 | OP* o; |
463ee0b2 | 3508 | int once = block && block->op_flags & OPf_SPECIAL && |
a0d0e21e | 3509 | (block->op_type == OP_ENTERSUB || block->op_type == OP_NULL); |
93a17b20 | 3510 | |
463ee0b2 LW |
3511 | if (expr) { |
3512 | if (once && expr->op_type == OP_CONST && !SvTRUE(((SVOP*)expr)->op_sv)) | |
3513 | return block; /* do {} while 0 does once */ | |
fb73857a | 3514 | if (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB |
3515 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB)) { | |
774d564b | 3516 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 3517 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 GS |
3518 | } else if (expr->op_flags & OPf_KIDS) { |
3519 | OP *k1 = ((UNOP*)expr)->op_first; | |
3520 | OP *k2 = (k1) ? k1->op_sibling : NULL; | |
3521 | switch (expr->op_type) { | |
3522 | case OP_NULL: | |
3523 | if (k2 && k2->op_type == OP_READLINE | |
3524 | && (k2->op_flags & OPf_STACKED) | |
3525 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) | |
3526 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3527 | break; | |
3528 | ||
3529 | case OP_SASSIGN: | |
3530 | if (k1->op_type == OP_READDIR | |
3531 | || k1->op_type == OP_GLOB | |
3532 | || k1->op_type == OP_EACH) | |
3533 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3534 | break; | |
3535 | } | |
774d564b | 3536 | } |
463ee0b2 | 3537 | } |
93a17b20 | 3538 | |
8990e307 | 3539 | listop = append_elem(OP_LINESEQ, block, newOP(OP_UNSTACK, 0)); |
883ffac3 | 3540 | o = new_logop(OP_AND, 0, &expr, &listop); |
463ee0b2 | 3541 | |
883ffac3 CS |
3542 | if (listop) |
3543 | ((LISTOP*)listop)->op_last->op_next = LINKLIST(o); | |
79072805 | 3544 | |
11343788 MB |
3545 | if (once && o != listop) |
3546 | o->op_next = ((LOGOP*)cUNOPo->op_first)->op_other; | |
79072805 | 3547 | |
11343788 MB |
3548 | if (o == listop) |
3549 | o = newUNOP(OP_NULL, 0, o); /* or do {} while 1 loses outer block */ | |
748a9306 | 3550 | |
11343788 MB |
3551 | o->op_flags |= flags; |
3552 | o = scope(o); | |
3553 | o->op_flags |= OPf_SPECIAL; /* suppress POPBLOCK curpm restoration*/ | |
3554 | return o; | |
79072805 LW |
3555 | } |
3556 | ||
3557 | OP * | |
864dbfa3 | 3558 | Perl_newWHILEOP(pTHX_ I32 flags, I32 debuggable, LOOP *loop, I32 whileline, OP *expr, OP *block, OP *cont) |
79072805 | 3559 | { |
11343788 | 3560 | dTHR; |
79072805 LW |
3561 | OP *redo; |
3562 | OP *next = 0; | |
3563 | OP *listop; | |
11343788 | 3564 | OP *o; |
79072805 LW |
3565 | OP *condop; |
3566 | ||
fb73857a | 3567 | if (expr && (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB |
3568 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB))) { | |
748a9306 | 3569 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 3570 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 GS |
3571 | } else if (expr && (expr->op_flags & OPf_KIDS)) { |
3572 | OP *k1 = ((UNOP*)expr)->op_first; | |
3573 | OP *k2 = (k1) ? k1->op_sibling : NULL; | |
3574 | switch (expr->op_type) { | |
3575 | case OP_NULL: | |
3576 | if (k2 && k2->op_type == OP_READLINE | |
3577 | && (k2->op_flags & OPf_STACKED) | |
3578 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) | |
3579 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3580 | break; | |
3581 | ||
3582 | case OP_SASSIGN: | |
3583 | if (k1->op_type == OP_READDIR | |
3584 | || k1->op_type == OP_GLOB | |
3585 | || k1->op_type == OP_EACH) | |
3586 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3587 | break; | |
3588 | } | |
748a9306 | 3589 | } |
79072805 LW |
3590 | |
3591 | if (!block) | |
3592 | block = newOP(OP_NULL, 0); | |
3593 | ||
3594 | if (cont) | |
3595 | next = LINKLIST(cont); | |
fb73857a | 3596 | if (expr) { |
79072805 | 3597 | cont = append_elem(OP_LINESEQ, cont, newOP(OP_UNSTACK, 0)); |
fb73857a | 3598 | if ((line_t)whileline != NOLINE) { |
3280af22 | 3599 | PL_copline = whileline; |
fb73857a | 3600 | cont = append_elem(OP_LINESEQ, cont, |
3601 | newSTATEOP(0, Nullch, Nullop)); | |
3602 | } | |
3603 | } | |
79072805 | 3604 | |
463ee0b2 | 3605 | listop = append_list(OP_LINESEQ, (LISTOP*)block, (LISTOP*)cont); |
79072805 LW |
3606 | redo = LINKLIST(listop); |
3607 | ||
3608 | if (expr) { | |
3280af22 | 3609 | PL_copline = whileline; |
883ffac3 CS |
3610 | scalar(listop); |
3611 | o = new_logop(OP_AND, 0, &expr, &listop); | |
11343788 | 3612 | if (o == expr && o->op_type == OP_CONST && !SvTRUE(cSVOPo->op_sv)) { |
85e6fe83 | 3613 | op_free(expr); /* oops, it's a while (0) */ |
463ee0b2 | 3614 | op_free((OP*)loop); |
883ffac3 | 3615 | return Nullop; /* listop already freed by new_logop */ |
463ee0b2 | 3616 | } |
883ffac3 CS |
3617 | if (listop) |
3618 | ((LISTOP*)listop)->op_last->op_next = condop = | |
3619 | (o == listop ? redo : LINKLIST(o)); | |
79072805 LW |
3620 | if (!next) |
3621 | next = condop; | |
3622 | } | |
3623 | else | |
11343788 | 3624 | o = listop; |
79072805 LW |
3625 | |
3626 | if (!loop) { | |
b7dc083c | 3627 | NewOp(1101,loop,1,LOOP); |
79072805 | 3628 | loop->op_type = OP_ENTERLOOP; |
22c35a8c | 3629 | loop->op_ppaddr = PL_ppaddr[OP_ENTERLOOP]; |
79072805 LW |
3630 | loop->op_private = 0; |
3631 | loop->op_next = (OP*)loop; | |
3632 | } | |
3633 | ||
11343788 | 3634 | o = newBINOP(OP_LEAVELOOP, 0, (OP*)loop, o); |
79072805 LW |
3635 | |
3636 | loop->op_redoop = redo; | |
11343788 | 3637 | loop->op_lastop = o; |
79072805 LW |
3638 | |
3639 | if (next) | |
3640 | loop->op_nextop = next; | |
3641 | else | |
11343788 | 3642 | loop->op_nextop = o; |
79072805 | 3643 | |
11343788 MB |
3644 | o->op_flags |= flags; |
3645 | o->op_private |= (flags >> 8); | |
3646 | return o; | |
79072805 LW |
3647 | } |
3648 | ||
3649 | OP * | |
864dbfa3 | 3650 | Perl_newFOROP(pTHX_ I32 flags,char *label,line_t forline,OP *sv,OP *expr,OP *block,OP *cont) |
79072805 LW |
3651 | { |
3652 | LOOP *loop; | |
b7dc083c | 3653 | LOOP *tmp; |
fb73857a | 3654 | OP *wop; |
85e6fe83 | 3655 | int padoff = 0; |
4633a7c4 | 3656 | I32 iterflags = 0; |
79072805 | 3657 | |
79072805 | 3658 | if (sv) { |
85e6fe83 | 3659 | if (sv->op_type == OP_RV2SV) { /* symbol table variable */ |
748a9306 | 3660 | sv->op_type = OP_RV2GV; |
22c35a8c | 3661 | sv->op_ppaddr = PL_ppaddr[OP_RV2GV]; |
79072805 | 3662 | } |
85e6fe83 LW |
3663 | else if (sv->op_type == OP_PADSV) { /* private variable */ |
3664 | padoff = sv->op_targ; | |
3665 | op_free(sv); | |
3666 | sv = Nullop; | |
3667 | } | |
54b9620d MB |
3668 | else if (sv->op_type == OP_THREADSV) { /* per-thread variable */ |
3669 | padoff = sv->op_targ; | |
3670 | iterflags |= OPf_SPECIAL; | |
3671 | op_free(sv); | |
3672 | sv = Nullop; | |
3673 | } | |
79072805 | 3674 | else |
cea2e8a9 | 3675 | Perl_croak(aTHX_ "Can't use %s for loop variable", PL_op_desc[sv->op_type]); |
79072805 LW |
3676 | } |
3677 | else { | |
54b9620d MB |
3678 | #ifdef USE_THREADS |
3679 | padoff = find_threadsv("_"); | |
3680 | iterflags |= OPf_SPECIAL; | |
3681 | #else | |
3280af22 | 3682 | sv = newGVOP(OP_GV, 0, PL_defgv); |
54b9620d | 3683 | #endif |
79072805 | 3684 | } |
5f05dabc | 3685 | if (expr->op_type == OP_RV2AV || expr->op_type == OP_PADAV) { |
89ea2908 | 3686 | expr = mod(force_list(scalar(ref(expr, OP_ITER))), OP_GREPSTART); |
4633a7c4 LW |
3687 | iterflags |= OPf_STACKED; |
3688 | } | |
89ea2908 GA |
3689 | else if (expr->op_type == OP_NULL && |
3690 | (expr->op_flags & OPf_KIDS) && | |
3691 | ((BINOP*)expr)->op_first->op_type == OP_FLOP) | |
3692 | { | |
3693 | /* Basically turn for($x..$y) into the same as for($x,$y), but we | |
3694 | * set the STACKED flag to indicate that these values are to be | |
3695 | * treated as min/max values by 'pp_iterinit'. | |
3696 | */ | |
3697 | UNOP* flip = (UNOP*)((UNOP*)((BINOP*)expr)->op_first)->op_first; | |
1a67a97c | 3698 | LOGOP* range = (LOGOP*) flip->op_first; |
89ea2908 GA |
3699 | OP* left = range->op_first; |
3700 | OP* right = left->op_sibling; | |
5152d7c7 | 3701 | LISTOP* listop; |
89ea2908 GA |
3702 | |
3703 | range->op_flags &= ~OPf_KIDS; | |
3704 | range->op_first = Nullop; | |
3705 | ||
5152d7c7 | 3706 | listop = (LISTOP*)newLISTOP(OP_LIST, 0, left, right); |
1a67a97c SM |
3707 | listop->op_first->op_next = range->op_next; |
3708 | left->op_next = range->op_other; | |
5152d7c7 GS |
3709 | right->op_next = (OP*)listop; |
3710 | listop->op_next = listop->op_first; | |
89ea2908 GA |
3711 | |
3712 | op_free(expr); | |
5152d7c7 | 3713 | expr = (OP*)(listop); |
89ea2908 GA |
3714 | null(expr); |
3715 | iterflags |= OPf_STACKED; | |
3716 | } | |
3717 | else { | |
3718 | expr = mod(force_list(expr), OP_GREPSTART); | |
3719 | } | |
3720 | ||
3721 | ||
4633a7c4 | 3722 | loop = (LOOP*)list(convert(OP_ENTERITER, iterflags, |
89ea2908 | 3723 | append_elem(OP_LIST, expr, scalar(sv)))); |
85e6fe83 | 3724 | assert(!loop->op_next); |
b7dc083c NIS |
3725 | #ifdef PL_OP_SLAB_ALLOC |
3726 | NewOp(1234,tmp,1,LOOP); | |
3727 | Copy(loop,tmp,1,LOOP); | |
3728 | loop = tmp; | |
3729 | #else | |
85e6fe83 | 3730 | Renew(loop, 1, LOOP); |
b7dc083c | 3731 | #endif |
85e6fe83 | 3732 | loop->op_targ = padoff; |
fb73857a | 3733 | wop = newWHILEOP(flags, 1, loop, forline, newOP(OP_ITER, 0), block, cont); |
3280af22 | 3734 | PL_copline = forline; |
fb73857a | 3735 | return newSTATEOP(0, label, wop); |
79072805 LW |
3736 | } |
3737 | ||
8990e307 | 3738 | OP* |
864dbfa3 | 3739 | Perl_newLOOPEX(pTHX_ I32 type, OP *label) |
8990e307 | 3740 | { |
11343788 MB |
3741 | dTHR; |
3742 | OP *o; | |
2d8e6c8d GS |
3743 | STRLEN n_a; |
3744 | ||
8990e307 | 3745 | if (type != OP_GOTO || label->op_type == OP_CONST) { |
cdaebead MB |
3746 | /* "last()" means "last" */ |
3747 | if (label->op_type == OP_STUB && (label->op_flags & OPf_PARENS)) | |
3748 | o = newOP(type, OPf_SPECIAL); | |
3749 | else { | |
3750 | o = newPVOP(type, 0, savepv(label->op_type == OP_CONST | |
2d8e6c8d | 3751 | ? SvPVx(((SVOP*)label)->op_sv, n_a) |
cdaebead MB |
3752 | : "")); |
3753 | } | |
8990e307 LW |
3754 | op_free(label); |
3755 | } | |
3756 | else { | |
a0d0e21e LW |
3757 | if (label->op_type == OP_ENTERSUB) |
3758 | label = newUNOP(OP_REFGEN, 0, mod(label, OP_REFGEN)); | |
11343788 | 3759 | o = newUNOP(type, OPf_STACKED, label); |
8990e307 | 3760 | } |
3280af22 | 3761 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 3762 | return o; |
8990e307 LW |
3763 | } |
3764 | ||
79072805 | 3765 | void |
864dbfa3 | 3766 | Perl_cv_undef(pTHX_ CV *cv) |
79072805 | 3767 | { |
11343788 MB |
3768 | dTHR; |
3769 | #ifdef USE_THREADS | |
e858de61 MB |
3770 | if (CvMUTEXP(cv)) { |
3771 | MUTEX_DESTROY(CvMUTEXP(cv)); | |
3772 | Safefree(CvMUTEXP(cv)); | |
3773 | CvMUTEXP(cv) = 0; | |
3774 | } | |
11343788 MB |
3775 | #endif /* USE_THREADS */ |
3776 | ||
a0d0e21e | 3777 | if (!CvXSUB(cv) && CvROOT(cv)) { |
11343788 MB |
3778 | #ifdef USE_THREADS |
3779 | if (CvDEPTH(cv) || (CvOWNER(cv) && CvOWNER(cv) != thr)) | |
cea2e8a9 | 3780 | Perl_croak(aTHX_ "Can't undef active subroutine"); |
11343788 | 3781 | #else |
a0d0e21e | 3782 | if (CvDEPTH(cv)) |
cea2e8a9 | 3783 | Perl_croak(aTHX_ "Can't undef active subroutine"); |
11343788 | 3784 | #endif /* USE_THREADS */ |
8990e307 | 3785 | ENTER; |
a0d0e21e | 3786 | |
3280af22 NIS |
3787 | SAVESPTR(PL_curpad); |
3788 | PL_curpad = 0; | |
a0d0e21e | 3789 | |
a5f75d66 | 3790 | if (!CvCLONED(cv)) |
748a9306 | 3791 | op_free(CvROOT(cv)); |
79072805 | 3792 | CvROOT(cv) = Nullop; |
8990e307 | 3793 | LEAVE; |
79072805 | 3794 | } |
1d5db326 | 3795 | SvPOK_off((SV*)cv); /* forget prototype */ |
44a8e56a | 3796 | CvFLAGS(cv) = 0; |
8e07c86e AD |
3797 | SvREFCNT_dec(CvGV(cv)); |
3798 | CvGV(cv) = Nullgv; | |
3799 | SvREFCNT_dec(CvOUTSIDE(cv)); | |
3800 | CvOUTSIDE(cv) = Nullcv; | |
3801 | if (CvPADLIST(cv)) { | |
8ebc5c01 | 3802 | /* may be during global destruction */ |
3803 | if (SvREFCNT(CvPADLIST(cv))) { | |
93965878 | 3804 | I32 i = AvFILLp(CvPADLIST(cv)); |
8ebc5c01 | 3805 | while (i >= 0) { |
3806 | SV** svp = av_fetch(CvPADLIST(cv), i--, FALSE); | |
46fc3d4c | 3807 | SV* sv = svp ? *svp : Nullsv; |
3808 | if (!sv) | |
3809 | continue; | |
3280af22 NIS |
3810 | if (sv == (SV*)PL_comppad_name) |
3811 | PL_comppad_name = Nullav; | |
3812 | else if (sv == (SV*)PL_comppad) { | |
3813 | PL_comppad = Nullav; | |
3814 | PL_curpad = Null(SV**); | |
46fc3d4c | 3815 | } |
3816 | SvREFCNT_dec(sv); | |
8ebc5c01 | 3817 | } |
3818 | SvREFCNT_dec((SV*)CvPADLIST(cv)); | |
8e07c86e | 3819 | } |
8e07c86e AD |
3820 | CvPADLIST(cv) = Nullav; |
3821 | } | |
79072805 LW |
3822 | } |
3823 | ||
5f05dabc | 3824 | #ifdef DEBUG_CLOSURES |
76e3520e | 3825 | STATIC void |
ba106d47 | 3826 | cv_dump(CV *cv) |
5f05dabc | 3827 | { |
3828 | CV *outside = CvOUTSIDE(cv); | |
3829 | AV* padlist = CvPADLIST(cv); | |
4fdae800 | 3830 | AV* pad_name; |
3831 | AV* pad; | |
3832 | SV** pname; | |
3833 | SV** ppad; | |
5f05dabc | 3834 | I32 ix; |
3835 | ||
fb73857a | 3836 | PerlIO_printf(Perl_debug_log, "\tCV=0x%lx (%s), OUTSIDE=0x%lx (%s)\n", |
ab50184a CS |
3837 | cv, |
3838 | (CvANON(cv) ? "ANON" | |
6b88bc9c | 3839 | : (cv == PL_main_cv) ? "MAIN" |
33b8ce05 | 3840 | : CvUNIQUE(cv) ? "UNIQUE" |
44a8e56a | 3841 | : CvGV(cv) ? GvNAME(CvGV(cv)) : "UNDEFINED"), |
ab50184a CS |
3842 | outside, |
3843 | (!outside ? "null" | |
3844 | : CvANON(outside) ? "ANON" | |
6b88bc9c | 3845 | : (outside == PL_main_cv) ? "MAIN" |
07055b4c | 3846 | : CvUNIQUE(outside) ? "UNIQUE" |
44a8e56a | 3847 | : CvGV(outside) ? GvNAME(CvGV(outside)) : "UNDEFINED")); |
5f05dabc | 3848 | |
4fdae800 | 3849 | if (!padlist) |
3850 | return; | |
3851 | ||
3852 | pad_name = (AV*)*av_fetch(padlist, 0, FALSE); | |
3853 | pad = (AV*)*av_fetch(padlist, 1, FALSE); | |
3854 | pname = AvARRAY(pad_name); | |
3855 | ppad = AvARRAY(pad); | |
3856 | ||
93965878 | 3857 | for (ix = 1; ix <= AvFILLp(pad_name); ix++) { |
5f05dabc | 3858 | if (SvPOK(pname[ix])) |
fb73857a | 3859 | PerlIO_printf(Perl_debug_log, "\t%4d. 0x%lx (%s\"%s\" %ld-%ld)\n", |
4fdae800 | 3860 | ix, ppad[ix], |
3861 | SvFAKE(pname[ix]) ? "FAKE " : "", | |
3862 | SvPVX(pname[ix]), | |
ab50184a CS |
3863 | (long)I_32(SvNVX(pname[ix])), |
3864 | (long)SvIVX(pname[ix])); | |
5f05dabc | 3865 | } |
3866 | } | |
3867 | #endif /* DEBUG_CLOSURES */ | |
3868 | ||
76e3520e | 3869 | STATIC CV * |
cea2e8a9 | 3870 | S_cv_clone2(pTHX_ CV *proto, CV *outside) |
748a9306 | 3871 | { |
11343788 | 3872 | dTHR; |
748a9306 LW |
3873 | AV* av; |
3874 | I32 ix; | |
3875 | AV* protopadlist = CvPADLIST(proto); | |
3876 | AV* protopad_name = (AV*)*av_fetch(protopadlist, 0, FALSE); | |
3877 | AV* protopad = (AV*)*av_fetch(protopadlist, 1, FALSE); | |
5f05dabc | 3878 | SV** pname = AvARRAY(protopad_name); |
3879 | SV** ppad = AvARRAY(protopad); | |
93965878 NIS |
3880 | I32 fname = AvFILLp(protopad_name); |
3881 | I32 fpad = AvFILLp(protopad); | |
748a9306 LW |
3882 | AV* comppadlist; |
3883 | CV* cv; | |
3884 | ||
07055b4c CS |
3885 | assert(!CvUNIQUE(proto)); |
3886 | ||
748a9306 | 3887 | ENTER; |
3280af22 NIS |
3888 | SAVESPTR(PL_curpad); |
3889 | SAVESPTR(PL_comppad); | |
3890 | SAVESPTR(PL_comppad_name); | |
3891 | SAVESPTR(PL_compcv); | |
748a9306 | 3892 | |
3280af22 | 3893 | cv = PL_compcv = (CV*)NEWSV(1104,0); |
fa83b5b6 | 3894 | sv_upgrade((SV *)cv, SvTYPE(proto)); |
a5f75d66 | 3895 | CvCLONED_on(cv); |
5f05dabc | 3896 | if (CvANON(proto)) |
3897 | CvANON_on(cv); | |
748a9306 | 3898 | |
11343788 | 3899 | #ifdef USE_THREADS |
12ca11f6 | 3900 | New(666, CvMUTEXP(cv), 1, perl_mutex); |
11343788 | 3901 | MUTEX_INIT(CvMUTEXP(cv)); |
11343788 MB |
3902 | CvOWNER(cv) = 0; |
3903 | #endif /* USE_THREADS */ | |
748a9306 | 3904 | CvFILEGV(cv) = CvFILEGV(proto); |
44a8e56a | 3905 | CvGV(cv) = (GV*)SvREFCNT_inc(CvGV(proto)); |
748a9306 LW |
3906 | CvSTASH(cv) = CvSTASH(proto); |
3907 | CvROOT(cv) = CvROOT(proto); | |
3908 | CvSTART(cv) = CvSTART(proto); | |
5f05dabc | 3909 | if (outside) |
3910 | CvOUTSIDE(cv) = (CV*)SvREFCNT_inc(outside); | |
748a9306 | 3911 | |
68dc0745 | 3912 | if (SvPOK(proto)) |
3913 | sv_setpvn((SV*)cv, SvPVX(proto), SvCUR(proto)); | |
3914 | ||
3280af22 | 3915 | PL_comppad_name = newAV(); |
46fc3d4c | 3916 | for (ix = fname; ix >= 0; ix--) |
3280af22 | 3917 | av_store(PL_comppad_name, ix, SvREFCNT_inc(pname[ix])); |
748a9306 | 3918 | |
3280af22 | 3919 | PL_comppad = newAV(); |
748a9306 LW |
3920 | |
3921 | comppadlist = newAV(); | |
3922 | AvREAL_off(comppadlist); | |
3280af22 NIS |
3923 | av_store(comppadlist, 0, (SV*)PL_comppad_name); |
3924 | av_store(comppadlist, 1, (SV*)PL_comppad); | |
748a9306 | 3925 | CvPADLIST(cv) = comppadlist; |
3280af22 NIS |
3926 | av_fill(PL_comppad, AvFILLp(protopad)); |
3927 | PL_curpad = AvARRAY(PL_comppad); | |
748a9306 LW |
3928 | |
3929 | av = newAV(); /* will be @_ */ | |
3930 | av_extend(av, 0); | |
3280af22 | 3931 | av_store(PL_comppad, 0, (SV*)av); |
748a9306 LW |
3932 | AvFLAGS(av) = AVf_REIFY; |
3933 | ||
9607fc9c | 3934 | for (ix = fpad; ix > 0; ix--) { |
3935 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; | |
3280af22 | 3936 | if (namesv && namesv != &PL_sv_undef) { |
aa689395 | 3937 | char *name = SvPVX(namesv); /* XXX */ |
3938 | if (SvFLAGS(namesv) & SVf_FAKE) { /* lexical from outside? */ | |
3939 | I32 off = pad_findlex(name, ix, SvIVX(namesv), | |
2680586e | 3940 | CvOUTSIDE(cv), cxstack_ix, 0, 0); |
5f05dabc | 3941 | if (!off) |
3280af22 | 3942 | PL_curpad[ix] = SvREFCNT_inc(ppad[ix]); |
5f05dabc | 3943 | else if (off != ix) |
cea2e8a9 | 3944 | Perl_croak(aTHX_ "panic: cv_clone: %s", name); |
748a9306 LW |
3945 | } |
3946 | else { /* our own lexical */ | |
aa689395 | 3947 | SV* sv; |
5f05dabc | 3948 | if (*name == '&') { |
3949 | /* anon code -- we'll come back for it */ | |
3950 | sv = SvREFCNT_inc(ppad[ix]); | |
3951 | } | |
3952 | else if (*name == '@') | |
3953 | sv = (SV*)newAV(); | |
748a9306 | 3954 | else if (*name == '%') |
5f05dabc | 3955 | sv = (SV*)newHV(); |
748a9306 | 3956 | else |
5f05dabc | 3957 | sv = NEWSV(0,0); |
3958 | if (!SvPADBUSY(sv)) | |
3959 | SvPADMY_on(sv); | |
3280af22 | 3960 | PL_curpad[ix] = sv; |
748a9306 LW |
3961 | } |
3962 | } | |
3963 | else { | |
aa689395 | 3964 | SV* sv = NEWSV(0,0); |
748a9306 | 3965 | SvPADTMP_on(sv); |
3280af22 | 3966 | PL_curpad[ix] = sv; |
748a9306 LW |
3967 | } |
3968 | } | |
3969 | ||
5f05dabc | 3970 | /* Now that vars are all in place, clone nested closures. */ |
3971 | ||
9607fc9c | 3972 | for (ix = fpad; ix > 0; ix--) { |
3973 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; | |
aa689395 | 3974 | if (namesv |
3280af22 | 3975 | && namesv != &PL_sv_undef |
aa689395 | 3976 | && !(SvFLAGS(namesv) & SVf_FAKE) |
3977 | && *SvPVX(namesv) == '&' | |
5f05dabc | 3978 | && CvCLONE(ppad[ix])) |
3979 | { | |
3980 | CV *kid = cv_clone2((CV*)ppad[ix], cv); | |
3981 | SvREFCNT_dec(ppad[ix]); | |
3982 | CvCLONE_on(kid); | |
3983 | SvPADMY_on(kid); | |
3280af22 | 3984 | PL_curpad[ix] = (SV*)kid; |
748a9306 LW |
3985 | } |
3986 | } | |
3987 | ||
5f05dabc | 3988 | #ifdef DEBUG_CLOSURES |
ab50184a CS |
3989 | PerlIO_printf(Perl_debug_log, "Cloned inside:\n"); |
3990 | cv_dump(outside); | |
3991 | PerlIO_printf(Perl_debug_log, " from:\n"); | |
5f05dabc | 3992 | cv_dump(proto); |
ab50184a | 3993 | PerlIO_printf(Perl_debug_log, " to:\n"); |
5f05dabc | 3994 | cv_dump(cv); |
3995 | #endif | |
3996 | ||
748a9306 LW |
3997 | LEAVE; |
3998 | return cv; | |
3999 | } | |
4000 | ||
4001 | CV * | |
864dbfa3 | 4002 | Perl_cv_clone(pTHX_ CV *proto) |
5f05dabc | 4003 | { |
b099ddc0 GS |
4004 | CV *cv; |
4005 | MUTEX_LOCK(&PL_cred_mutex); /* XXX create separate mutex */ | |
4006 | cv = cv_clone2(proto, CvOUTSIDE(proto)); | |
4007 | MUTEX_UNLOCK(&PL_cred_mutex); /* XXX create separate mutex */ | |
4008 | return cv; | |
5f05dabc | 4009 | } |
4010 | ||
3fe9a6f1 | 4011 | void |
864dbfa3 | 4012 | Perl_cv_ckproto(pTHX_ CV *cv, GV *gv, char *p) |
3fe9a6f1 | 4013 | { |
0453d815 PM |
4014 | dTHR; |
4015 | ||
f248d071 | 4016 | if (((!p != !SvPOK(cv)) || (p && strNE(p, SvPVX(cv)))) && ckWARN_d(WARN_UNSAFE)) { |
46fc3d4c | 4017 | SV* msg = sv_newmortal(); |
3fe9a6f1 | 4018 | SV* name = Nullsv; |
4019 | ||
4020 | if (gv) | |
46fc3d4c | 4021 | gv_efullname3(name = sv_newmortal(), gv, Nullch); |
4022 | sv_setpv(msg, "Prototype mismatch:"); | |
4023 | if (name) | |
cea2e8a9 | 4024 | Perl_sv_catpvf(aTHX_ msg, " sub %_", name); |
3fe9a6f1 | 4025 | if (SvPOK(cv)) |
cea2e8a9 | 4026 | Perl_sv_catpvf(aTHX_ msg, " (%s)", SvPVX(cv)); |
46fc3d4c | 4027 | sv_catpv(msg, " vs "); |
4028 | if (p) | |
cea2e8a9 | 4029 | Perl_sv_catpvf(aTHX_ msg, "(%s)", p); |
46fc3d4c | 4030 | else |
4031 | sv_catpv(msg, "none"); | |
0453d815 | 4032 | Perl_warner(aTHX_ WARN_UNSAFE, "%_", msg); |
3fe9a6f1 | 4033 | } |
4034 | } | |
4035 | ||
760ac839 | 4036 | SV * |
864dbfa3 | 4037 | Perl_cv_const_sv(pTHX_ CV *cv) |
760ac839 | 4038 | { |
54310121 | 4039 | if (!cv || !SvPOK(cv) || SvCUR(cv)) |
4040 | return Nullsv; | |
fe5e78ed GS |
4041 | return op_const_sv(CvSTART(cv), cv); |
4042 | } | |
760ac839 | 4043 | |
fe5e78ed | 4044 | SV * |
864dbfa3 | 4045 | Perl_op_const_sv(pTHX_ OP *o, CV *cv) |
fe5e78ed GS |
4046 | { |
4047 | SV *sv = Nullsv; | |
4048 | ||
4049 | if(!o) | |
4050 | return Nullsv; | |
4051 | ||
4052 | if(o->op_type == OP_LINESEQ && cLISTOPo->op_first) | |
4053 | o = cLISTOPo->op_first->op_sibling; | |
4054 | ||
4055 | for (; o; o = o->op_next) { | |
54310121 | 4056 | OPCODE type = o->op_type; |
fe5e78ed | 4057 | |
acb36ea4 | 4058 | if (sv && o->op_next == o) |
fe5e78ed | 4059 | return sv; |
54310121 | 4060 | if (type == OP_NEXTSTATE || type == OP_NULL || type == OP_PUSHMARK) |
4061 | continue; | |
4062 | if (type == OP_LEAVESUB || type == OP_RETURN) | |
4063 | break; | |
4064 | if (sv) | |
4065 | return Nullsv; | |
4066 | if (type == OP_CONST) | |
5dc0d613 | 4067 | sv = cSVOPo->op_sv; |
fe5e78ed | 4068 | else if (type == OP_PADSV && cv) { |
e858de61 MB |
4069 | AV* padav = (AV*)(AvARRAY(CvPADLIST(cv))[1]); |
4070 | sv = padav ? AvARRAY(padav)[o->op_targ] : Nullsv; | |
5aabfad6 | 4071 | if (!sv || (!SvREADONLY(sv) && SvREFCNT(sv) > 1)) |
54310121 | 4072 | return Nullsv; |
760ac839 | 4073 | } |
54310121 | 4074 | else |
4075 | return Nullsv; | |
760ac839 | 4076 | } |
5aabfad6 | 4077 | if (sv) |
4078 | SvREADONLY_on(sv); | |
760ac839 LW |
4079 | return sv; |
4080 | } | |
4081 | ||
09bef843 SB |
4082 | void |
4083 | Perl_newMYSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, OP *block) | |
4084 | { | |
4085 | if (o) | |
4086 | SAVEFREEOP(o); | |
4087 | if (proto) | |
4088 | SAVEFREEOP(proto); | |
4089 | if (attrs) | |
4090 | SAVEFREEOP(attrs); | |
4091 | if (block) | |
4092 | SAVEFREEOP(block); | |
4093 | Perl_croak(aTHX_ "\"my sub\" not yet implemented"); | |
4094 | } | |
4095 | ||
748a9306 | 4096 | CV * |
864dbfa3 | 4097 | Perl_newSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *block) |
79072805 | 4098 | { |
09bef843 SB |
4099 | return Perl_newATTRSUB(aTHX_ floor, o, proto, Nullop, block); |
4100 | } | |
4101 | ||
4102 | CV * | |
4103 | Perl_newATTRSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, OP *block) | |
4104 | { | |
11343788 | 4105 | dTHR; |
2d8e6c8d GS |
4106 | STRLEN n_a; |
4107 | char *name = o ? SvPVx(cSVOPo->op_sv, n_a) : Nullch; | |
55d729e4 | 4108 | GV *gv = gv_fetchpv(name ? name : "__ANON__", |
09bef843 SB |
4109 | GV_ADDMULTI | ((block || attrs) ? 0 : GV_NOINIT), |
4110 | SVt_PVCV); | |
2d8e6c8d | 4111 | char *ps = proto ? SvPVx(((SVOP*)proto)->op_sv, n_a) : Nullch; |
a2008d6d | 4112 | register CV *cv=0; |
a0d0e21e | 4113 | I32 ix; |
79072805 | 4114 | |
11343788 | 4115 | if (o) |
5dc0d613 | 4116 | SAVEFREEOP(o); |
3fe9a6f1 | 4117 | if (proto) |
4118 | SAVEFREEOP(proto); | |
09bef843 SB |
4119 | if (attrs) |
4120 | SAVEFREEOP(attrs); | |
3fe9a6f1 | 4121 | |
09bef843 | 4122 | if (SvTYPE(gv) != SVt_PVGV) { /* Maybe prototype now, and had at |
55d729e4 GS |
4123 | maximum a prototype before. */ |
4124 | if (SvTYPE(gv) > SVt_NULL) { | |
0453d815 | 4125 | if (!SvPOK((SV*)gv) && !(SvIOK((SV*)gv) && SvIVX((SV*)gv) == -1) |
f248d071 GS |
4126 | && ckWARN_d(WARN_UNSAFE)) |
4127 | { | |
0453d815 | 4128 | Perl_warner(aTHX_ WARN_UNSAFE, "Runaway prototype"); |
f248d071 | 4129 | } |
55d729e4 GS |
4130 | cv_ckproto((CV*)gv, NULL, ps); |
4131 | } | |
4132 | if (ps) | |
4133 | sv_setpv((SV*)gv, ps); | |
4134 | else | |
4135 | sv_setiv((SV*)gv, -1); | |
3280af22 NIS |
4136 | SvREFCNT_dec(PL_compcv); |
4137 | cv = PL_compcv = NULL; | |
4138 | PL_sub_generation++; | |
55d729e4 GS |
4139 | goto noblock; |
4140 | } | |
4141 | ||
68dc0745 | 4142 | if (!name || GvCVGEN(gv)) |
4143 | cv = Nullcv; | |
4144 | else if (cv = GvCV(gv)) { | |
3fe9a6f1 | 4145 | cv_ckproto(cv, gv, ps); |
68dc0745 | 4146 | /* already defined (or promised)? */ |
4147 | if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
4148 | SV* const_sv; | |
fe5e78ed | 4149 | bool const_changed = TRUE; |
09bef843 | 4150 | if (!block && !attrs) { |
aa689395 | 4151 | /* just a "sub foo;" when &foo is already defined */ |
3280af22 | 4152 | SAVEFREESV(PL_compcv); |
aa689395 | 4153 | goto done; |
4154 | } | |
7bac28a0 | 4155 | /* ahem, death to those who redefine active sort subs */ |
3280af22 | 4156 | if (PL_curstackinfo->si_type == PERLSI_SORT && PL_sortcop == CvSTART(cv)) |
cea2e8a9 | 4157 | Perl_croak(aTHX_ "Can't redefine active sort subroutine %s", name); |
09bef843 SB |
4158 | if (!block) |
4159 | goto withattrs; | |
fe5e78ed GS |
4160 | if(const_sv = cv_const_sv(cv)) |
4161 | const_changed = sv_cmp(const_sv, op_const_sv(block, Nullcv)); | |
599cee73 PM |
4162 | if ((const_sv && const_changed) || ckWARN(WARN_REDEFINE) |
4163 | && !(CvGV(cv) && GvSTASH(CvGV(cv)) | |
2f34f9d4 IZ |
4164 | && HvNAME(GvSTASH(CvGV(cv))) |
4165 | && strEQ(HvNAME(GvSTASH(CvGV(cv))), | |
4166 | "autouse"))) { | |
3280af22 NIS |
4167 | line_t oldline = PL_curcop->cop_line; |
4168 | PL_curcop->cop_line = PL_copline; | |
cea2e8a9 | 4169 | Perl_warner(aTHX_ WARN_REDEFINE, |
599cee73 | 4170 | const_sv ? "Constant subroutine %s redefined" |
09bef843 | 4171 | : "Subroutine %s redefined", name); |
3280af22 | 4172 | PL_curcop->cop_line = oldline; |
79072805 | 4173 | } |
8990e307 | 4174 | SvREFCNT_dec(cv); |
68dc0745 | 4175 | cv = Nullcv; |
79072805 LW |
4176 | } |
4177 | } | |
09bef843 SB |
4178 | withattrs: |
4179 | if (attrs) { | |
4180 | HV *stash; | |
4181 | SV *rcv; | |
4182 | ||
4183 | /* Need to do a C<use attributes $stash_of_cv,\&cv,@attrs> | |
4184 | * before we clobber PL_compcv. | |
4185 | */ | |
4186 | if (cv && !block) { | |
4187 | rcv = (SV*)cv; | |
4188 | if (CvGV(cv) && GvSTASH(CvGV(cv)) && HvNAME(GvSTASH(CvGV(cv)))) | |
4189 | stash = GvSTASH(CvGV(cv)); | |
4190 | else if (CvSTASH(cv) && HvNAME(CvSTASH(cv))) | |
4191 | stash = CvSTASH(cv); | |
4192 | else | |
4193 | stash = PL_curstash; | |
4194 | } | |
4195 | else { | |
4196 | /* possibly about to re-define existing subr -- ignore old cv */ | |
4197 | rcv = (SV*)PL_compcv; | |
4198 | if (name && GvSTASH(gv) && HvNAME(GvSTASH(gv))) | |
4199 | stash = GvSTASH(gv); | |
4200 | else | |
4201 | stash = PL_curstash; | |
4202 | } | |
4203 | apply_attrs(stash, rcv, attrs); | |
4204 | } | |
a0d0e21e | 4205 | if (cv) { /* must reuse cv if autoloaded */ |
09bef843 SB |
4206 | if (!block) { |
4207 | /* got here with just attrs -- work done, so bug out */ | |
4208 | SAVEFREESV(PL_compcv); | |
4209 | goto done; | |
4210 | } | |
4633a7c4 | 4211 | cv_undef(cv); |
3280af22 NIS |
4212 | CvFLAGS(cv) = CvFLAGS(PL_compcv); |
4213 | CvOUTSIDE(cv) = CvOUTSIDE(PL_compcv); | |
4214 | CvOUTSIDE(PL_compcv) = 0; | |
4215 | CvPADLIST(cv) = CvPADLIST(PL_compcv); | |
4216 | CvPADLIST(PL_compcv) = 0; | |
4217 | if (SvREFCNT(PL_compcv) > 1) /* XXX Make closures transit through stub. */ | |
4218 | CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc((SV*)cv); | |
4219 | SvREFCNT_dec(PL_compcv); | |
a0d0e21e LW |
4220 | } |
4221 | else { | |
3280af22 | 4222 | cv = PL_compcv; |
44a8e56a | 4223 | if (name) { |
4224 | GvCV(gv) = cv; | |
4225 | GvCVGEN(gv) = 0; | |
3280af22 | 4226 | PL_sub_generation++; |
44a8e56a | 4227 | } |
a0d0e21e | 4228 | } |
44a8e56a | 4229 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
3280af22 NIS |
4230 | CvFILEGV(cv) = PL_curcop->cop_filegv; |
4231 | CvSTASH(cv) = PL_curstash; | |
11343788 MB |
4232 | #ifdef USE_THREADS |
4233 | CvOWNER(cv) = 0; | |
1cfa4ec7 | 4234 | if (!CvMUTEXP(cv)) { |
f6aaf501 | 4235 | New(666, CvMUTEXP(cv), 1, perl_mutex); |
1cfa4ec7 GS |
4236 | MUTEX_INIT(CvMUTEXP(cv)); |
4237 | } | |
11343788 | 4238 | #endif /* USE_THREADS */ |
8990e307 | 4239 | |
3fe9a6f1 | 4240 | if (ps) |
4241 | sv_setpv((SV*)cv, ps); | |
4633a7c4 | 4242 | |
3280af22 | 4243 | if (PL_error_count) { |
c07a80fd | 4244 | op_free(block); |
4245 | block = Nullop; | |
68dc0745 | 4246 | if (name) { |
4247 | char *s = strrchr(name, ':'); | |
4248 | s = s ? s+1 : name; | |
6d4c2119 CS |
4249 | if (strEQ(s, "BEGIN")) { |
4250 | char *not_safe = | |
4251 | "BEGIN not safe after errors--compilation aborted"; | |
faef0170 | 4252 | if (PL_in_eval & EVAL_KEEPERR) |
cea2e8a9 | 4253 | Perl_croak(aTHX_ not_safe); |
6d4c2119 CS |
4254 | else { |
4255 | /* force display of errors found but not reported */ | |
38a03e6e | 4256 | sv_catpv(ERRSV, not_safe); |
cea2e8a9 | 4257 | Perl_croak(aTHX_ "%s", SvPVx(ERRSV, n_a)); |
6d4c2119 CS |
4258 | } |
4259 | } | |
68dc0745 | 4260 | } |
c07a80fd | 4261 | } |
a0d0e21e | 4262 | if (!block) { |
55d729e4 | 4263 | noblock: |
3280af22 | 4264 | PL_copline = NOLINE; |
a0d0e21e LW |
4265 | LEAVE_SCOPE(floor); |
4266 | return cv; | |
4267 | } | |
4268 | ||
3280af22 NIS |
4269 | if (AvFILLp(PL_comppad_name) < AvFILLp(PL_comppad)) |
4270 | av_store(PL_comppad_name, AvFILLp(PL_comppad), Nullsv); | |
a0d0e21e | 4271 | |
54310121 | 4272 | if (CvCLONE(cv)) { |
3280af22 NIS |
4273 | SV **namep = AvARRAY(PL_comppad_name); |
4274 | for (ix = AvFILLp(PL_comppad); ix > 0; ix--) { | |
54310121 | 4275 | SV *namesv; |
4276 | ||
3280af22 | 4277 | if (SvIMMORTAL(PL_curpad[ix])) |
54310121 | 4278 | continue; |
4279 | /* | |
4280 | * The only things that a clonable function needs in its | |
4281 | * pad are references to outer lexicals and anonymous subs. | |
4282 | * The rest are created anew during cloning. | |
4283 | */ | |
4284 | if (!((namesv = namep[ix]) != Nullsv && | |
3280af22 | 4285 | namesv != &PL_sv_undef && |
54310121 | 4286 | (SvFAKE(namesv) || |
4287 | *SvPVX(namesv) == '&'))) | |
4288 | { | |
3280af22 NIS |
4289 | SvREFCNT_dec(PL_curpad[ix]); |
4290 | PL_curpad[ix] = Nullsv; | |
54310121 | 4291 | } |
4292 | } | |
a0d0e21e | 4293 | } |
54310121 | 4294 | else { |
4295 | AV *av = newAV(); /* Will be @_ */ | |
4296 | av_extend(av, 0); | |
3280af22 | 4297 | av_store(PL_comppad, 0, (SV*)av); |
54310121 | 4298 | AvFLAGS(av) = AVf_REIFY; |
79072805 | 4299 | |
3280af22 NIS |
4300 | for (ix = AvFILLp(PL_comppad); ix > 0; ix--) { |
4301 | if (SvIMMORTAL(PL_curpad[ix])) | |
54310121 | 4302 | continue; |
3280af22 NIS |
4303 | if (!SvPADMY(PL_curpad[ix])) |
4304 | SvPADTMP_on(PL_curpad[ix]); | |
54310121 | 4305 | } |
4306 | } | |
79072805 | 4307 | |
cd06dffe GS |
4308 | if(CvLVALUE(cv)) { |
4309 | CvROOT(cv) = newUNOP(OP_LEAVESUBLV, 0, scalarseq(block)); | |
4310 | } | |
4311 | else { | |
4312 | CvROOT(cv) = newUNOP(OP_LEAVESUB, 0, scalarseq(block)); | |
4313 | } | |
79072805 LW |
4314 | CvSTART(cv) = LINKLIST(CvROOT(cv)); |
4315 | CvROOT(cv)->op_next = 0; | |
4316 | peep(CvSTART(cv)); | |
93a17b20 | 4317 | |
44a8e56a | 4318 | if (name) { |
4319 | char *s; | |
4320 | ||
3280af22 | 4321 | if (PERLDB_SUBLINE && PL_curstash != PL_debstash) { |
46fc3d4c | 4322 | SV *sv = NEWSV(0,0); |
44a8e56a | 4323 | SV *tmpstr = sv_newmortal(); |
549bb64a | 4324 | GV *db_postponed = gv_fetchpv("DB::postponed", GV_ADDMULTI, SVt_PVHV); |
44a8e56a | 4325 | CV *cv; |
4326 | HV *hv; | |
4327 | ||
cea2e8a9 | 4328 | Perl_sv_setpvf(aTHX_ sv, "%_:%ld-%ld", |
3280af22 NIS |
4329 | GvSV(PL_curcop->cop_filegv), |
4330 | (long)PL_subline, (long)PL_curcop->cop_line); | |
44a8e56a | 4331 | gv_efullname3(tmpstr, gv, Nullch); |
3280af22 | 4332 | hv_store(GvHV(PL_DBsub), SvPVX(tmpstr), SvCUR(tmpstr), sv, 0); |
44a8e56a | 4333 | hv = GvHVn(db_postponed); |
9607fc9c | 4334 | if (HvFILL(hv) > 0 && hv_exists(hv, SvPVX(tmpstr), SvCUR(tmpstr)) |
4335 | && (cv = GvCV(db_postponed))) { | |
44a8e56a | 4336 | dSP; |
924508f0 | 4337 | PUSHMARK(SP); |
44a8e56a | 4338 | XPUSHs(tmpstr); |
4339 | PUTBACK; | |
864dbfa3 | 4340 | call_sv((SV*)cv, G_DISCARD); |
44a8e56a | 4341 | } |
4342 | } | |
79072805 | 4343 | |
44a8e56a | 4344 | if ((s = strrchr(name,':'))) |
28757baa | 4345 | s++; |
4346 | else | |
4347 | s = name; | |
68dc0745 | 4348 | if (strEQ(s, "BEGIN")) { |
3280af22 | 4349 | I32 oldscope = PL_scopestack_ix; |
28757baa | 4350 | ENTER; |
3280af22 NIS |
4351 | SAVESPTR(PL_compiling.cop_filegv); |
4352 | SAVEI16(PL_compiling.cop_line); | |
4353 | save_svref(&PL_rs); | |
4354 | sv_setsv(PL_rs, PL_nrs); | |
28757baa | 4355 | |
3280af22 NIS |
4356 | if (!PL_beginav) |
4357 | PL_beginav = newAV(); | |
28757baa | 4358 | DEBUG_x( dump_sub(gv) ); |
3280af22 | 4359 | av_push(PL_beginav, (SV *)cv); |
28757baa | 4360 | GvCV(gv) = 0; |
3280af22 | 4361 | call_list(oldscope, PL_beginav); |
a6006777 | 4362 | |
3280af22 | 4363 | PL_curcop = &PL_compiling; |
a0ed51b3 | 4364 | PL_compiling.op_private = PL_hints; |
28757baa | 4365 | LEAVE; |
4366 | } | |
3280af22 NIS |
4367 | else if (strEQ(s, "END") && !PL_error_count) { |
4368 | if (!PL_endav) | |
4369 | PL_endav = newAV(); | |
4370 | av_unshift(PL_endav, 1); | |
4371 | av_store(PL_endav, 0, (SV *)cv); | |
28757baa | 4372 | GvCV(gv) = 0; |
4373 | } | |
3280af22 NIS |
4374 | else if (strEQ(s, "INIT") && !PL_error_count) { |
4375 | if (!PL_initav) | |
4376 | PL_initav = newAV(); | |
4377 | av_push(PL_initav, SvREFCNT_inc(cv)); | |
b7aad4fe | 4378 | GvCV(gv) = 0; |
ae77835f | 4379 | } |
79072805 | 4380 | } |
a6006777 | 4381 | |
aa689395 | 4382 | done: |
3280af22 | 4383 | PL_copline = NOLINE; |
8990e307 | 4384 | LEAVE_SCOPE(floor); |
a0d0e21e | 4385 | return cv; |
79072805 LW |
4386 | } |
4387 | ||
b099ddc0 | 4388 | /* XXX unsafe for threads if eval_owner isn't held */ |
5476c433 | 4389 | void |
864dbfa3 | 4390 | Perl_newCONSTSUB(pTHX_ HV *stash, char *name, SV *sv) |
5476c433 JD |
4391 | { |
4392 | dTHR; | |
3280af22 NIS |
4393 | U32 oldhints = PL_hints; |
4394 | HV *old_cop_stash = PL_curcop->cop_stash; | |
4395 | HV *old_curstash = PL_curstash; | |
4396 | line_t oldline = PL_curcop->cop_line; | |
4397 | PL_curcop->cop_line = PL_copline; | |
5476c433 | 4398 | |
3280af22 | 4399 | PL_hints &= ~HINT_BLOCK_SCOPE; |
5476c433 | 4400 | if(stash) |
3280af22 | 4401 | PL_curstash = PL_curcop->cop_stash = stash; |
5476c433 | 4402 | |
09bef843 | 4403 | newATTRSUB( |
be24f278 | 4404 | start_subparse(FALSE, 0), |
5476c433 | 4405 | newSVOP(OP_CONST, 0, newSVpv(name,0)), |
6b88bc9c | 4406 | newSVOP(OP_CONST, 0, &PL_sv_no), /* SvPV(&PL_sv_no) == "" -- GMB */ |
09bef843 | 4407 | Nullop, |
5476c433 JD |
4408 | newSTATEOP(0, Nullch, newSVOP(OP_CONST, 0, sv)) |
4409 | ); | |
4410 | ||
3280af22 NIS |
4411 | PL_hints = oldhints; |
4412 | PL_curcop->cop_stash = old_cop_stash; | |
4413 | PL_curstash = old_curstash; | |
4414 | PL_curcop->cop_line = oldline; | |
5476c433 JD |
4415 | } |
4416 | ||
57d3b86d | 4417 | CV * |
864dbfa3 | 4418 | Perl_newXS(pTHX_ char *name, XSUBADDR_t subaddr, char *filename) |
a0d0e21e | 4419 | { |
11343788 | 4420 | dTHR; |
44a8e56a | 4421 | GV *gv = gv_fetchpv(name ? name : "__ANON__", GV_ADDMULTI, SVt_PVCV); |
79072805 | 4422 | register CV *cv; |
44a8e56a | 4423 | |
4424 | if (cv = (name ? GvCV(gv) : Nullcv)) { | |
4425 | if (GvCVGEN(gv)) { | |
4426 | /* just a cached method */ | |
4427 | SvREFCNT_dec(cv); | |
4428 | cv = 0; | |
4429 | } | |
4430 | else if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
4431 | /* already defined (or promised) */ | |
599cee73 | 4432 | if (ckWARN(WARN_REDEFINE) && !(CvGV(cv) && GvSTASH(CvGV(cv)) |
2f34f9d4 IZ |
4433 | && HvNAME(GvSTASH(CvGV(cv))) |
4434 | && strEQ(HvNAME(GvSTASH(CvGV(cv))), "autouse"))) { | |
3280af22 | 4435 | line_t oldline = PL_curcop->cop_line; |
51f6edd3 GS |
4436 | if (PL_copline != NOLINE) |
4437 | PL_curcop->cop_line = PL_copline; | |
cea2e8a9 | 4438 | Perl_warner(aTHX_ WARN_REDEFINE, "Subroutine %s redefined",name); |
3280af22 | 4439 | PL_curcop->cop_line = oldline; |
a0d0e21e LW |
4440 | } |
4441 | SvREFCNT_dec(cv); | |
4442 | cv = 0; | |
79072805 | 4443 | } |
79072805 | 4444 | } |
44a8e56a | 4445 | |
4446 | if (cv) /* must reuse cv if autoloaded */ | |
4447 | cv_undef(cv); | |
a0d0e21e LW |
4448 | else { |
4449 | cv = (CV*)NEWSV(1105,0); | |
4450 | sv_upgrade((SV *)cv, SVt_PVCV); | |
44a8e56a | 4451 | if (name) { |
4452 | GvCV(gv) = cv; | |
4453 | GvCVGEN(gv) = 0; | |
3280af22 | 4454 | PL_sub_generation++; |
44a8e56a | 4455 | } |
a0d0e21e | 4456 | } |
5196be3e | 4457 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
11343788 | 4458 | #ifdef USE_THREADS |
12ca11f6 | 4459 | New(666, CvMUTEXP(cv), 1, perl_mutex); |
11343788 | 4460 | MUTEX_INIT(CvMUTEXP(cv)); |
11343788 MB |
4461 | CvOWNER(cv) = 0; |
4462 | #endif /* USE_THREADS */ | |
79072805 | 4463 | CvFILEGV(cv) = gv_fetchfile(filename); |
a0d0e21e | 4464 | CvXSUB(cv) = subaddr; |
44a8e56a | 4465 | |
28757baa | 4466 | if (name) { |
4467 | char *s = strrchr(name,':'); | |
4468 | if (s) | |
4469 | s++; | |
4470 | else | |
4471 | s = name; | |
4472 | if (strEQ(s, "BEGIN")) { | |
3280af22 NIS |
4473 | if (!PL_beginav) |
4474 | PL_beginav = newAV(); | |
4475 | av_push(PL_beginav, (SV *)cv); | |
44a8e56a | 4476 | GvCV(gv) = 0; |
28757baa | 4477 | } |
4478 | else if (strEQ(s, "END")) { | |
3280af22 NIS |
4479 | if (!PL_endav) |
4480 | PL_endav = newAV(); | |
4481 | av_unshift(PL_endav, 1); | |
4482 | av_store(PL_endav, 0, (SV *)cv); | |
44a8e56a | 4483 | GvCV(gv) = 0; |
28757baa | 4484 | } |
7d07dbc2 | 4485 | else if (strEQ(s, "INIT")) { |
3280af22 NIS |
4486 | if (!PL_initav) |
4487 | PL_initav = newAV(); | |
4488 | av_push(PL_initav, (SV *)cv); | |
f8f842e4 | 4489 | GvCV(gv) = 0; |
ae77835f | 4490 | } |
28757baa | 4491 | } |
8990e307 | 4492 | else |
a5f75d66 | 4493 | CvANON_on(cv); |
44a8e56a | 4494 | |
a0d0e21e | 4495 | return cv; |
79072805 LW |
4496 | } |
4497 | ||
4498 | void | |
864dbfa3 | 4499 | Perl_newFORM(pTHX_ I32 floor, OP *o, OP *block) |
79072805 | 4500 | { |
11343788 | 4501 | dTHR; |
79072805 LW |
4502 | register CV *cv; |
4503 | char *name; | |
4504 | GV *gv; | |
a0d0e21e | 4505 | I32 ix; |
2d8e6c8d | 4506 | STRLEN n_a; |
79072805 | 4507 | |
11343788 | 4508 | if (o) |
2d8e6c8d | 4509 | name = SvPVx(cSVOPo->op_sv, n_a); |
79072805 LW |
4510 | else |
4511 | name = "STDOUT"; | |
85e6fe83 | 4512 | gv = gv_fetchpv(name,TRUE, SVt_PVFM); |
a5f75d66 | 4513 | GvMULTI_on(gv); |
79072805 | 4514 | if (cv = GvFORM(gv)) { |
599cee73 | 4515 | if (ckWARN(WARN_REDEFINE)) { |
3280af22 | 4516 | line_t oldline = PL_curcop->cop_line; |
79072805 | 4517 | |
3280af22 | 4518 | PL_curcop->cop_line = PL_copline; |
cea2e8a9 | 4519 | Perl_warner(aTHX_ WARN_REDEFINE, "Format %s redefined",name); |
3280af22 | 4520 | PL_curcop->cop_line = oldline; |
79072805 | 4521 | } |
8990e307 | 4522 | SvREFCNT_dec(cv); |
79072805 | 4523 | } |
3280af22 | 4524 | cv = PL_compcv; |
79072805 | 4525 | GvFORM(gv) = cv; |
44a8e56a | 4526 | CvGV(cv) = (GV*)SvREFCNT_inc(gv); |
3280af22 | 4527 | CvFILEGV(cv) = PL_curcop->cop_filegv; |
79072805 | 4528 | |
3280af22 NIS |
4529 | for (ix = AvFILLp(PL_comppad); ix > 0; ix--) { |
4530 | if (!SvPADMY(PL_curpad[ix]) && !SvIMMORTAL(PL_curpad[ix])) | |
4531 | SvPADTMP_on(PL_curpad[ix]); | |
a0d0e21e LW |
4532 | } |
4533 | ||
79072805 LW |
4534 | CvROOT(cv) = newUNOP(OP_LEAVEWRITE, 0, scalarseq(block)); |
4535 | CvSTART(cv) = LINKLIST(CvROOT(cv)); | |
4536 | CvROOT(cv)->op_next = 0; | |
4537 | peep(CvSTART(cv)); | |
11343788 | 4538 | op_free(o); |
3280af22 | 4539 | PL_copline = NOLINE; |
8990e307 | 4540 | LEAVE_SCOPE(floor); |
79072805 LW |
4541 | } |
4542 | ||
4543 | OP * | |
864dbfa3 | 4544 | Perl_newANONLIST(pTHX_ OP *o) |
79072805 | 4545 | { |
93a17b20 | 4546 | return newUNOP(OP_REFGEN, 0, |
11343788 | 4547 | mod(list(convert(OP_ANONLIST, 0, o)), OP_REFGEN)); |
79072805 LW |
4548 | } |
4549 | ||
4550 | OP * | |
864dbfa3 | 4551 | Perl_newANONHASH(pTHX_ OP *o) |
79072805 | 4552 | { |
93a17b20 | 4553 | return newUNOP(OP_REFGEN, 0, |
11343788 | 4554 | mod(list(convert(OP_ANONHASH, 0, o)), OP_REFGEN)); |
a0d0e21e LW |
4555 | } |
4556 | ||
4557 | OP * | |
864dbfa3 | 4558 | Perl_newANONSUB(pTHX_ I32 floor, OP *proto, OP *block) |
a0d0e21e | 4559 | { |
09bef843 SB |
4560 | return newANONATTRSUB(floor, proto, Nullop, block); |
4561 | } | |
4562 | ||
4563 | OP * | |
4564 | Perl_newANONATTRSUB(pTHX_ I32 floor, OP *proto, OP *attrs, OP *block) | |
4565 | { | |
a0d0e21e | 4566 | return newUNOP(OP_REFGEN, 0, |
09bef843 SB |
4567 | newSVOP(OP_ANONCODE, 0, |
4568 | (SV*)newATTRSUB(floor, 0, proto, attrs, block))); | |
79072805 LW |
4569 | } |
4570 | ||
4571 | OP * | |
864dbfa3 | 4572 | Perl_oopsAV(pTHX_ OP *o) |
79072805 | 4573 | { |
ed6116ce LW |
4574 | switch (o->op_type) { |
4575 | case OP_PADSV: | |
4576 | o->op_type = OP_PADAV; | |
22c35a8c | 4577 | o->op_ppaddr = PL_ppaddr[OP_PADAV]; |
51e247a3 | 4578 | return ref(o, OP_RV2AV); |
ed6116ce LW |
4579 | |
4580 | case OP_RV2SV: | |
79072805 | 4581 | o->op_type = OP_RV2AV; |
22c35a8c | 4582 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
79072805 | 4583 | ref(o, OP_RV2AV); |
ed6116ce LW |
4584 | break; |
4585 | ||
4586 | default: | |
0453d815 PM |
4587 | if (ckWARN_d(WARN_INTERNAL)) |
4588 | Perl_warner(aTHX_ WARN_INTERNAL, "oops: oopsAV"); | |
ed6116ce LW |
4589 | break; |
4590 | } | |
79072805 LW |
4591 | return o; |
4592 | } | |
4593 | ||
4594 | OP * | |
864dbfa3 | 4595 | Perl_oopsHV(pTHX_ OP *o) |
79072805 | 4596 | { |
0453d815 | 4597 | dTHR; |
0453d815 | 4598 | |
ed6116ce LW |
4599 | switch (o->op_type) { |
4600 | case OP_PADSV: | |
4601 | case OP_PADAV: | |
4602 | o->op_type = OP_PADHV; | |
22c35a8c | 4603 | o->op_ppaddr = PL_ppaddr[OP_PADHV]; |
51e247a3 | 4604 | return ref(o, OP_RV2HV); |
ed6116ce LW |
4605 | |
4606 | case OP_RV2SV: | |
4607 | case OP_RV2AV: | |
79072805 | 4608 | o->op_type = OP_RV2HV; |
22c35a8c | 4609 | o->op_ppaddr = PL_ppaddr[OP_RV2HV]; |
79072805 | 4610 | ref(o, OP_RV2HV); |
ed6116ce LW |
4611 | break; |
4612 | ||
4613 | default: | |
0453d815 PM |
4614 | if (ckWARN_d(WARN_INTERNAL)) |
4615 | Perl_warner(aTHX_ WARN_INTERNAL, "oops: oopsHV"); | |
ed6116ce LW |
4616 | break; |
4617 | } | |
79072805 LW |
4618 | return o; |
4619 | } | |
4620 | ||
4621 | OP * | |
864dbfa3 | 4622 | Perl_newAVREF(pTHX_ OP *o) |
79072805 | 4623 | { |
ed6116ce LW |
4624 | if (o->op_type == OP_PADANY) { |
4625 | o->op_type = OP_PADAV; | |
22c35a8c | 4626 | o->op_ppaddr = PL_ppaddr[OP_PADAV]; |
93a17b20 | 4627 | return o; |
ed6116ce | 4628 | } |
79072805 LW |
4629 | return newUNOP(OP_RV2AV, 0, scalar(o)); |
4630 | } | |
4631 | ||
4632 | OP * | |
864dbfa3 | 4633 | Perl_newGVREF(pTHX_ I32 type, OP *o) |
79072805 | 4634 | { |
82092f1d | 4635 | if (type == OP_MAPSTART || type == OP_GREPSTART || type == OP_SORT) |
a0d0e21e | 4636 | return newUNOP(OP_NULL, 0, o); |
748a9306 | 4637 | return ref(newUNOP(OP_RV2GV, OPf_REF, o), type); |
79072805 LW |
4638 | } |
4639 | ||
4640 | OP * | |
864dbfa3 | 4641 | Perl_newHVREF(pTHX_ OP *o) |
79072805 | 4642 | { |
ed6116ce LW |
4643 | if (o->op_type == OP_PADANY) { |
4644 | o->op_type = OP_PADHV; | |
22c35a8c | 4645 | o->op_ppaddr = PL_ppaddr[OP_PADHV]; |
93a17b20 | 4646 | return o; |
ed6116ce | 4647 | } |
79072805 LW |
4648 | return newUNOP(OP_RV2HV, 0, scalar(o)); |
4649 | } | |
4650 | ||
4651 | OP * | |
864dbfa3 | 4652 | Perl_oopsCV(pTHX_ OP *o) |
79072805 | 4653 | { |
cea2e8a9 | 4654 | Perl_croak(aTHX_ "NOT IMPL LINE %d",__LINE__); |
79072805 LW |
4655 | /* STUB */ |
4656 | return o; | |
4657 | } | |
4658 | ||
4659 | OP * | |
864dbfa3 | 4660 | Perl_newCVREF(pTHX_ I32 flags, OP *o) |
79072805 | 4661 | { |
c07a80fd | 4662 | return newUNOP(OP_RV2CV, flags, scalar(o)); |
79072805 LW |
4663 | } |
4664 | ||
4665 | OP * | |
864dbfa3 | 4666 | Perl_newSVREF(pTHX_ OP *o) |
79072805 | 4667 | { |
ed6116ce LW |
4668 | if (o->op_type == OP_PADANY) { |
4669 | o->op_type = OP_PADSV; | |
22c35a8c | 4670 | o->op_ppaddr = PL_ppaddr[OP_PADSV]; |
93a17b20 | 4671 | return o; |
ed6116ce | 4672 | } |
224a4551 MB |
4673 | else if (o->op_type == OP_THREADSV && !(o->op_flags & OPpDONE_SVREF)) { |
4674 | o->op_flags |= OPpDONE_SVREF; | |
a863c7d1 | 4675 | return o; |
224a4551 | 4676 | } |
79072805 LW |
4677 | return newUNOP(OP_RV2SV, 0, scalar(o)); |
4678 | } | |
4679 | ||
4680 | /* Check routines. */ | |
4681 | ||
4682 | OP * | |
cea2e8a9 | 4683 | Perl_ck_anoncode(pTHX_ OP *o) |
5f05dabc | 4684 | { |
178c6305 CS |
4685 | PADOFFSET ix; |
4686 | SV* name; | |
4687 | ||
4688 | name = NEWSV(1106,0); | |
4689 | sv_upgrade(name, SVt_PVNV); | |
4690 | sv_setpvn(name, "&", 1); | |
4691 | SvIVX(name) = -1; | |
4692 | SvNVX(name) = 1; | |
5dc0d613 | 4693 | ix = pad_alloc(o->op_type, SVs_PADMY); |
3280af22 NIS |
4694 | av_store(PL_comppad_name, ix, name); |
4695 | av_store(PL_comppad, ix, cSVOPo->op_sv); | |
5dc0d613 MB |
4696 | SvPADMY_on(cSVOPo->op_sv); |
4697 | cSVOPo->op_sv = Nullsv; | |
4698 | cSVOPo->op_targ = ix; | |
4699 | return o; | |
5f05dabc | 4700 | } |
4701 | ||
4702 | OP * | |
cea2e8a9 | 4703 | Perl_ck_bitop(pTHX_ OP *o) |
55497cff | 4704 | { |
3280af22 | 4705 | o->op_private = PL_hints; |
5dc0d613 | 4706 | return o; |
55497cff | 4707 | } |
4708 | ||
4709 | OP * | |
cea2e8a9 | 4710 | Perl_ck_concat(pTHX_ OP *o) |
79072805 | 4711 | { |
11343788 MB |
4712 | if (cUNOPo->op_first->op_type == OP_CONCAT) |
4713 | o->op_flags |= OPf_STACKED; | |
4714 | return o; | |
79072805 LW |
4715 | } |
4716 | ||
4717 | OP * | |
cea2e8a9 | 4718 | Perl_ck_spair(pTHX_ OP *o) |
79072805 | 4719 | { |
11343788 | 4720 | if (o->op_flags & OPf_KIDS) { |
79072805 | 4721 | OP* newop; |
a0d0e21e | 4722 | OP* kid; |
5dc0d613 MB |
4723 | OPCODE type = o->op_type; |
4724 | o = modkids(ck_fun(o), type); | |
11343788 | 4725 | kid = cUNOPo->op_first; |
a0d0e21e LW |
4726 | newop = kUNOP->op_first->op_sibling; |
4727 | if (newop && | |
4728 | (newop->op_sibling || | |
22c35a8c | 4729 | !(PL_opargs[newop->op_type] & OA_RETSCALAR) || |
a0d0e21e LW |
4730 | newop->op_type == OP_PADAV || newop->op_type == OP_PADHV || |
4731 | newop->op_type == OP_RV2AV || newop->op_type == OP_RV2HV)) { | |
aeea060c | 4732 | |
11343788 | 4733 | return o; |
a0d0e21e LW |
4734 | } |
4735 | op_free(kUNOP->op_first); | |
4736 | kUNOP->op_first = newop; | |
4737 | } | |
22c35a8c | 4738 | o->op_ppaddr = PL_ppaddr[++o->op_type]; |
11343788 | 4739 | return ck_fun(o); |
a0d0e21e LW |
4740 | } |
4741 | ||
4742 | OP * | |
cea2e8a9 | 4743 | Perl_ck_delete(pTHX_ OP *o) |
a0d0e21e | 4744 | { |
11343788 | 4745 | o = ck_fun(o); |
5dc0d613 | 4746 | o->op_private = 0; |
11343788 MB |
4747 | if (o->op_flags & OPf_KIDS) { |
4748 | OP *kid = cUNOPo->op_first; | |
5f05dabc | 4749 | if (kid->op_type == OP_HSLICE) |
5dc0d613 | 4750 | o->op_private |= OPpSLICE; |
5f05dabc | 4751 | else if (kid->op_type != OP_HELEM) |
cea2e8a9 | 4752 | Perl_croak(aTHX_ "%s argument is not a HASH element or slice", |
22c35a8c | 4753 | PL_op_desc[o->op_type]); |
a0d0e21e | 4754 | null(kid); |
79072805 | 4755 | } |
11343788 | 4756 | return o; |
79072805 LW |
4757 | } |
4758 | ||
4759 | OP * | |
cea2e8a9 | 4760 | Perl_ck_eof(pTHX_ OP *o) |
79072805 | 4761 | { |
11343788 | 4762 | I32 type = o->op_type; |
79072805 | 4763 | |
11343788 MB |
4764 | if (o->op_flags & OPf_KIDS) { |
4765 | if (cLISTOPo->op_first->op_type == OP_STUB) { | |
4766 | op_free(o); | |
4767 | o = newUNOP(type, OPf_SPECIAL, | |
d58bf5aa | 4768 | newGVOP(OP_GV, 0, gv_fetchpv("main::ARGV", TRUE, SVt_PVAV))); |
8990e307 | 4769 | } |
11343788 | 4770 | return ck_fun(o); |
79072805 | 4771 | } |
11343788 | 4772 | return o; |
79072805 LW |
4773 | } |
4774 | ||
4775 | OP * | |
cea2e8a9 | 4776 | Perl_ck_eval(pTHX_ OP *o) |
79072805 | 4777 | { |
3280af22 | 4778 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 MB |
4779 | if (o->op_flags & OPf_KIDS) { |
4780 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 | 4781 | |
93a17b20 | 4782 | if (!kid) { |
11343788 MB |
4783 | o->op_flags &= ~OPf_KIDS; |
4784 | null(o); | |
79072805 LW |
4785 | } |
4786 | else if (kid->op_type == OP_LINESEQ) { | |
4787 | LOGOP *enter; | |
4788 | ||
11343788 MB |
4789 | kid->op_next = o->op_next; |
4790 | cUNOPo->op_first = 0; | |
4791 | op_free(o); | |
79072805 | 4792 | |
b7dc083c | 4793 | NewOp(1101, enter, 1, LOGOP); |
79072805 | 4794 | enter->op_type = OP_ENTERTRY; |
22c35a8c | 4795 | enter->op_ppaddr = PL_ppaddr[OP_ENTERTRY]; |
79072805 LW |
4796 | enter->op_private = 0; |
4797 | ||
4798 | /* establish postfix order */ | |
4799 | enter->op_next = (OP*)enter; | |
4800 | ||
11343788 MB |
4801 | o = prepend_elem(OP_LINESEQ, (OP*)enter, (OP*)kid); |
4802 | o->op_type = OP_LEAVETRY; | |
22c35a8c | 4803 | o->op_ppaddr = PL_ppaddr[OP_LEAVETRY]; |
11343788 MB |
4804 | enter->op_other = o; |
4805 | return o; | |
79072805 | 4806 | } |
c7cc6f1c | 4807 | else |
473986ff | 4808 | scalar((OP*)kid); |
79072805 LW |
4809 | } |
4810 | else { | |
11343788 | 4811 | op_free(o); |
54b9620d | 4812 | o = newUNOP(OP_ENTEREVAL, 0, newDEFSVOP()); |
79072805 | 4813 | } |
3280af22 | 4814 | o->op_targ = (PADOFFSET)PL_hints; |
11343788 | 4815 | return o; |
79072805 LW |
4816 | } |
4817 | ||
4818 | OP * | |
cea2e8a9 | 4819 | Perl_ck_exec(pTHX_ OP *o) |
79072805 LW |
4820 | { |
4821 | OP *kid; | |
11343788 MB |
4822 | if (o->op_flags & OPf_STACKED) { |
4823 | o = ck_fun(o); | |
4824 | kid = cUNOPo->op_first->op_sibling; | |
8990e307 LW |
4825 | if (kid->op_type == OP_RV2GV) |
4826 | null(kid); | |
79072805 | 4827 | } |
463ee0b2 | 4828 | else |
11343788 MB |
4829 | o = listkids(o); |
4830 | return o; | |
79072805 LW |
4831 | } |
4832 | ||
4833 | OP * | |
cea2e8a9 | 4834 | Perl_ck_exists(pTHX_ OP *o) |
5f05dabc | 4835 | { |
5196be3e MB |
4836 | o = ck_fun(o); |
4837 | if (o->op_flags & OPf_KIDS) { | |
4838 | OP *kid = cUNOPo->op_first; | |
5f05dabc | 4839 | if (kid->op_type != OP_HELEM) |
cea2e8a9 | 4840 | Perl_croak(aTHX_ "%s argument is not a HASH element", PL_op_desc[o->op_type]); |
5f05dabc | 4841 | null(kid); |
4842 | } | |
5196be3e | 4843 | return o; |
5f05dabc | 4844 | } |
4845 | ||
22c35a8c | 4846 | #if 0 |
5f05dabc | 4847 | OP * |
cea2e8a9 | 4848 | Perl_ck_gvconst(pTHX_ register OP *o) |
79072805 LW |
4849 | { |
4850 | o = fold_constants(o); | |
4851 | if (o->op_type == OP_CONST) | |
4852 | o->op_type = OP_GV; | |
4853 | return o; | |
4854 | } | |
22c35a8c | 4855 | #endif |
79072805 LW |
4856 | |
4857 | OP * | |
cea2e8a9 | 4858 | Perl_ck_rvconst(pTHX_ register OP *o) |
79072805 | 4859 | { |
11343788 MB |
4860 | dTHR; |
4861 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
85e6fe83 | 4862 | |
3280af22 | 4863 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
79072805 | 4864 | if (kid->op_type == OP_CONST) { |
44a8e56a | 4865 | char *name; |
4866 | int iscv; | |
4867 | GV *gv; | |
779c5bc9 | 4868 | SV *kidsv = kid->op_sv; |
2d8e6c8d | 4869 | STRLEN n_a; |
44a8e56a | 4870 | |
779c5bc9 GS |
4871 | /* Is it a constant from cv_const_sv()? */ |
4872 | if (SvROK(kidsv) && SvREADONLY(kidsv)) { | |
4873 | SV *rsv = SvRV(kidsv); | |
4874 | int svtype = SvTYPE(rsv); | |
4875 | char *badtype = Nullch; | |
4876 | ||
4877 | switch (o->op_type) { | |
4878 | case OP_RV2SV: | |
4879 | if (svtype > SVt_PVMG) | |
4880 | badtype = "a SCALAR"; | |
4881 | break; | |
4882 | case OP_RV2AV: | |
4883 | if (svtype != SVt_PVAV) | |
4884 | badtype = "an ARRAY"; | |
4885 | break; | |
4886 | case OP_RV2HV: | |
4887 | if (svtype != SVt_PVHV) { | |
4888 | if (svtype == SVt_PVAV) { /* pseudohash? */ | |
4889 | SV **ksv = av_fetch((AV*)rsv, 0, FALSE); | |
4890 | if (ksv && SvROK(*ksv) | |
4891 | && SvTYPE(SvRV(*ksv)) == SVt_PVHV) | |
4892 | { | |
4893 | break; | |
4894 | } | |
4895 | } | |
4896 | badtype = "a HASH"; | |
4897 | } | |
4898 | break; | |
4899 | case OP_RV2CV: | |
4900 | if (svtype != SVt_PVCV) | |
4901 | badtype = "a CODE"; | |
4902 | break; | |
4903 | } | |
4904 | if (badtype) | |
cea2e8a9 | 4905 | Perl_croak(aTHX_ "Constant is not %s reference", badtype); |
779c5bc9 GS |
4906 | return o; |
4907 | } | |
2d8e6c8d | 4908 | name = SvPV(kidsv, n_a); |
3280af22 | 4909 | if ((PL_hints & HINT_STRICT_REFS) && (kid->op_private & OPpCONST_BARE)) { |
44a8e56a | 4910 | char *badthing = Nullch; |
5dc0d613 | 4911 | switch (o->op_type) { |
44a8e56a | 4912 | case OP_RV2SV: |
4913 | badthing = "a SCALAR"; | |
4914 | break; | |
4915 | case OP_RV2AV: | |
4916 | badthing = "an ARRAY"; | |
4917 | break; | |
4918 | case OP_RV2HV: | |
4919 | badthing = "a HASH"; | |
4920 | break; | |
4921 | } | |
4922 | if (badthing) | |
cea2e8a9 | 4923 | Perl_croak(aTHX_ |
44a8e56a | 4924 | "Can't use bareword (\"%s\") as %s ref while \"strict refs\" in use", |
4925 | name, badthing); | |
4926 | } | |
93233ece CS |
4927 | /* |
4928 | * This is a little tricky. We only want to add the symbol if we | |
4929 | * didn't add it in the lexer. Otherwise we get duplicate strict | |
4930 | * warnings. But if we didn't add it in the lexer, we must at | |
4931 | * least pretend like we wanted to add it even if it existed before, | |
4932 | * or we get possible typo warnings. OPpCONST_ENTERED says | |
4933 | * whether the lexer already added THIS instance of this symbol. | |
4934 | */ | |
5196be3e | 4935 | iscv = (o->op_type == OP_RV2CV) * 2; |
93233ece | 4936 | do { |
44a8e56a | 4937 | gv = gv_fetchpv(name, |
748a9306 | 4938 | iscv | !(kid->op_private & OPpCONST_ENTERED), |
a0d0e21e LW |
4939 | iscv |
4940 | ? SVt_PVCV | |
11343788 | 4941 | : o->op_type == OP_RV2SV |
a0d0e21e | 4942 | ? SVt_PV |
11343788 | 4943 | : o->op_type == OP_RV2AV |
a0d0e21e | 4944 | ? SVt_PVAV |
11343788 | 4945 | : o->op_type == OP_RV2HV |
a0d0e21e LW |
4946 | ? SVt_PVHV |
4947 | : SVt_PVGV); | |
93233ece CS |
4948 | } while (!gv && !(kid->op_private & OPpCONST_ENTERED) && !iscv++); |
4949 | if (gv) { | |
4950 | kid->op_type = OP_GV; | |
4951 | SvREFCNT_dec(kid->op_sv); | |
4952 | kid->op_sv = SvREFCNT_inc(gv); | |
76cd736e | 4953 | kid->op_ppaddr = PL_ppaddr[OP_GV]; |
a0d0e21e | 4954 | } |
79072805 | 4955 | } |
11343788 | 4956 | return o; |
79072805 LW |
4957 | } |
4958 | ||
4959 | OP * | |
cea2e8a9 | 4960 | Perl_ck_ftst(pTHX_ OP *o) |
79072805 | 4961 | { |
11343788 MB |
4962 | dTHR; |
4963 | I32 type = o->op_type; | |
79072805 | 4964 | |
11343788 MB |
4965 | if (o->op_flags & OPf_REF) |
4966 | return o; | |
79072805 | 4967 | |
108ed793 | 4968 | if (o->op_flags & OPf_KIDS && cUNOPo->op_first->op_type != OP_STUB) { |
11343788 | 4969 | SVOP *kid = (SVOP*)cUNOPo->op_first; |
79072805 LW |
4970 | |
4971 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
2d8e6c8d | 4972 | STRLEN n_a; |
a0d0e21e | 4973 | OP *newop = newGVOP(type, OPf_REF, |
2d8e6c8d | 4974 | gv_fetchpv(SvPVx(kid->op_sv, n_a), TRUE, SVt_PVIO)); |
11343788 | 4975 | op_free(o); |
79072805 LW |
4976 | return newop; |
4977 | } | |
4978 | } | |
4979 | else { | |
11343788 | 4980 | op_free(o); |
79072805 | 4981 | if (type == OP_FTTTY) |
fb73857a | 4982 | return newGVOP(type, OPf_REF, gv_fetchpv("main::STDIN", TRUE, |
85e6fe83 | 4983 | SVt_PVIO)); |
79072805 | 4984 | else |
54b9620d | 4985 | return newUNOP(type, 0, newDEFSVOP()); |
79072805 | 4986 | } |
11343788 | 4987 | return o; |
79072805 LW |
4988 | } |
4989 | ||
4990 | OP * | |
cea2e8a9 | 4991 | Perl_ck_fun(pTHX_ OP *o) |
79072805 | 4992 | { |
11343788 | 4993 | dTHR; |
79072805 LW |
4994 | register OP *kid; |
4995 | OP **tokid; | |
4996 | OP *sibl; | |
4997 | I32 numargs = 0; | |
11343788 | 4998 | int type = o->op_type; |
22c35a8c | 4999 | register I32 oa = PL_opargs[type] >> OASHIFT; |
aeea060c | 5000 | |
11343788 | 5001 | if (o->op_flags & OPf_STACKED) { |
79072805 LW |
5002 | if ((oa & OA_OPTIONAL) && (oa >> 4) && !((oa >> 4) & OA_OPTIONAL)) |
5003 | oa &= ~OA_OPTIONAL; | |
5004 | else | |
11343788 | 5005 | return no_fh_allowed(o); |
79072805 LW |
5006 | } |
5007 | ||
11343788 | 5008 | if (o->op_flags & OPf_KIDS) { |
2d8e6c8d | 5009 | STRLEN n_a; |
11343788 MB |
5010 | tokid = &cLISTOPo->op_first; |
5011 | kid = cLISTOPo->op_first; | |
8990e307 LW |
5012 | if (kid->op_type == OP_PUSHMARK || |
5013 | kid->op_type == OP_NULL && kid->op_targ == OP_PUSHMARK) | |
5014 | { | |
79072805 LW |
5015 | tokid = &kid->op_sibling; |
5016 | kid = kid->op_sibling; | |
5017 | } | |
22c35a8c | 5018 | if (!kid && PL_opargs[type] & OA_DEFGV) |
54b9620d | 5019 | *tokid = kid = newDEFSVOP(); |
79072805 LW |
5020 | |
5021 | while (oa && kid) { | |
5022 | numargs++; | |
5023 | sibl = kid->op_sibling; | |
5024 | switch (oa & 7) { | |
5025 | case OA_SCALAR: | |
62c18ce2 GS |
5026 | /* list seen where single (scalar) arg expected? */ |
5027 | if (numargs == 1 && !(oa >> 4) | |
5028 | && kid->op_type == OP_LIST && type != OP_SCALAR) | |
5029 | { | |
5030 | return too_many_arguments(o,PL_op_desc[type]); | |
5031 | } | |
79072805 LW |
5032 | scalar(kid); |
5033 | break; | |
5034 | case OA_LIST: | |
5035 | if (oa < 16) { | |
5036 | kid = 0; | |
5037 | continue; | |
5038 | } | |
5039 | else | |
5040 | list(kid); | |
5041 | break; | |
5042 | case OA_AVREF: | |
5043 | if (kid->op_type == OP_CONST && | |
62c18ce2 GS |
5044 | (kid->op_private & OPpCONST_BARE)) |
5045 | { | |
2d8e6c8d | 5046 | char *name = SvPVx(((SVOP*)kid)->op_sv, n_a); |
79072805 | 5047 | OP *newop = newAVREF(newGVOP(OP_GV, 0, |
85e6fe83 | 5048 | gv_fetchpv(name, TRUE, SVt_PVAV) )); |
b9c39e73 | 5049 | if (ckWARN(WARN_SYNTAX)) |
cf2093f6 | 5050 | Perl_warner(aTHX_ WARN_SYNTAX, |
57def98f | 5051 | "Array @%s missing the @ in argument %"IVdf" of %s()", |
cf2093f6 | 5052 | name, (IV)numargs, PL_op_desc[type]); |
79072805 LW |
5053 | op_free(kid); |
5054 | kid = newop; | |
5055 | kid->op_sibling = sibl; | |
5056 | *tokid = kid; | |
5057 | } | |
8990e307 | 5058 | else if (kid->op_type != OP_RV2AV && kid->op_type != OP_PADAV) |
35cd451c | 5059 | bad_type(numargs, "array", PL_op_desc[type], kid); |
a0d0e21e | 5060 | mod(kid, type); |
79072805 LW |
5061 | break; |
5062 | case OA_HVREF: | |
5063 | if (kid->op_type == OP_CONST && | |
62c18ce2 GS |
5064 | (kid->op_private & OPpCONST_BARE)) |
5065 | { | |
2d8e6c8d | 5066 | char *name = SvPVx(((SVOP*)kid)->op_sv, n_a); |
79072805 | 5067 | OP *newop = newHVREF(newGVOP(OP_GV, 0, |
85e6fe83 | 5068 | gv_fetchpv(name, TRUE, SVt_PVHV) )); |
b9c39e73 | 5069 | if (ckWARN(WARN_SYNTAX)) |
cf2093f6 | 5070 | Perl_warner(aTHX_ WARN_SYNTAX, |
57def98f | 5071 | "Hash %%%s missing the %% in argument %"IVdf" of %s()", |
cf2093f6 | 5072 | name, (IV)numargs, PL_op_desc[type]); |
79072805 LW |
5073 | op_free(kid); |
5074 | kid = newop; | |
5075 | kid->op_sibling = sibl; | |
5076 | *tokid = kid; | |
5077 | } | |
8990e307 | 5078 | else if (kid->op_type != OP_RV2HV && kid->op_type != OP_PADHV) |
35cd451c | 5079 | bad_type(numargs, "hash", PL_op_desc[type], kid); |
a0d0e21e | 5080 | mod(kid, type); |
79072805 LW |
5081 | break; |
5082 | case OA_CVREF: | |
5083 | { | |
a0d0e21e | 5084 | OP *newop = newUNOP(OP_NULL, 0, kid); |
79072805 LW |
5085 | kid->op_sibling = 0; |
5086 | linklist(kid); | |
5087 | newop->op_next = newop; | |
5088 | kid = newop; | |
5089 | kid->op_sibling = sibl; | |
5090 | *tokid = kid; | |
5091 | } | |
5092 | break; | |
5093 | case OA_FILEREF: | |
c340be78 | 5094 | if (kid->op_type != OP_GV && kid->op_type != OP_RV2GV) { |
79072805 | 5095 | if (kid->op_type == OP_CONST && |
62c18ce2 GS |
5096 | (kid->op_private & OPpCONST_BARE)) |
5097 | { | |
79072805 | 5098 | OP *newop = newGVOP(OP_GV, 0, |
2d8e6c8d | 5099 | gv_fetchpv(SvPVx(((SVOP*)kid)->op_sv, n_a), TRUE, |
85e6fe83 | 5100 | SVt_PVIO) ); |
79072805 LW |
5101 | op_free(kid); |
5102 | kid = newop; | |
5103 | } | |
1ea32a52 GS |
5104 | else if (kid->op_type == OP_READLINE) { |
5105 | /* neophyte patrol: open(<FH>), close(<FH>) etc. */ | |
5106 | bad_type(numargs, "HANDLE", PL_op_desc[o->op_type], kid); | |
5107 | } | |
79072805 | 5108 | else { |
35cd451c | 5109 | I32 flags = OPf_SPECIAL; |
a6c40364 | 5110 | I32 priv = 0; |
35cd451c | 5111 | /* is this op a FH constructor? */ |
853846ea | 5112 | if (is_handle_constructor(o,numargs)) { |
1d8d4d2a | 5113 | flags = 0; |
853846ea NIS |
5114 | /* Set a flag to tell rv2gv to vivify |
5115 | * need to "prove" flag does not mean something | |
5116 | * else already - NI-S 1999/05/07 | |
5117 | */ | |
a6c40364 | 5118 | priv = OPpDEREF; |
1d8d4d2a NIS |
5119 | #if 0 |
5120 | /* Helps with open($array[$n],...) | |
5121 | but is too simplistic - need to do selectively | |
5122 | */ | |
5123 | mod(kid,type); | |
5124 | #endif | |
853846ea | 5125 | } |
79072805 | 5126 | kid->op_sibling = 0; |
35cd451c | 5127 | kid = newUNOP(OP_RV2GV, flags, scalar(kid)); |
a6c40364 GS |
5128 | if (priv) { |
5129 | kid->op_private |= priv; | |
1d8d4d2a | 5130 | } |
79072805 LW |
5131 | } |
5132 | kid->op_sibling = sibl; | |
5133 | *tokid = kid; | |
5134 | } | |
5135 | scalar(kid); | |
5136 | break; | |
5137 | case OA_SCALARREF: | |
a0d0e21e | 5138 | mod(scalar(kid), type); |
79072805 LW |
5139 | break; |
5140 | } | |
5141 | oa >>= 4; | |
5142 | tokid = &kid->op_sibling; | |
5143 | kid = kid->op_sibling; | |
5144 | } | |
11343788 | 5145 | o->op_private |= numargs; |
79072805 | 5146 | if (kid) |
22c35a8c | 5147 | return too_many_arguments(o,PL_op_desc[o->op_type]); |
11343788 | 5148 | listkids(o); |
79072805 | 5149 | } |
22c35a8c | 5150 | else if (PL_opargs[type] & OA_DEFGV) { |
11343788 | 5151 | op_free(o); |
54b9620d | 5152 | return newUNOP(type, 0, newDEFSVOP()); |
a0d0e21e LW |
5153 | } |
5154 | ||
79072805 LW |
5155 | if (oa) { |
5156 | while (oa & OA_OPTIONAL) | |
5157 | oa >>= 4; | |
5158 | if (oa && oa != OA_LIST) | |
22c35a8c | 5159 | return too_few_arguments(o,PL_op_desc[o->op_type]); |
79072805 | 5160 | } |
11343788 | 5161 | return o; |
79072805 LW |
5162 | } |
5163 | ||
5164 | OP * | |
cea2e8a9 | 5165 | Perl_ck_glob(pTHX_ OP *o) |
79072805 | 5166 | { |
fb73857a | 5167 | GV *gv; |
5168 | ||
1f2bfc8a | 5169 | if ((o->op_flags & OPf_KIDS) && !cLISTOPo->op_first->op_sibling) |
54b9620d | 5170 | append_elem(OP_GLOB, o, newDEFSVOP()); |
fb73857a | 5171 | |
5172 | if (!((gv = gv_fetchpv("glob", FALSE, SVt_PVCV)) && GvIMPORTED_CV(gv))) | |
5173 | gv = gv_fetchpv("CORE::GLOBAL::glob", FALSE, SVt_PVCV); | |
b1cb66bf | 5174 | |
5175 | if (gv && GvIMPORTED_CV(gv)) { | |
5196be3e | 5176 | append_elem(OP_GLOB, o, |
80252599 | 5177 | newSVOP(OP_CONST, 0, newSViv(PL_glob_index++))); |
1f2bfc8a | 5178 | o->op_type = OP_LIST; |
22c35a8c | 5179 | o->op_ppaddr = PL_ppaddr[OP_LIST]; |
1f2bfc8a | 5180 | cLISTOPo->op_first->op_type = OP_PUSHMARK; |
22c35a8c | 5181 | cLISTOPo->op_first->op_ppaddr = PL_ppaddr[OP_PUSHMARK]; |
1f2bfc8a | 5182 | o = newUNOP(OP_ENTERSUB, OPf_STACKED, |
aeea060c | 5183 | append_elem(OP_LIST, o, |
1f2bfc8a MB |
5184 | scalar(newUNOP(OP_RV2CV, 0, |
5185 | newGVOP(OP_GV, 0, gv))))); | |
d58bf5aa MB |
5186 | o = newUNOP(OP_NULL, 0, ck_subr(o)); |
5187 | o->op_targ = OP_GLOB; /* hint at what it used to be */ | |
5188 | return o; | |
b1cb66bf | 5189 | } |
5190 | gv = newGVgen("main"); | |
a0d0e21e | 5191 | gv_IOadd(gv); |
11343788 MB |
5192 | append_elem(OP_GLOB, o, newGVOP(OP_GV, 0, gv)); |
5193 | scalarkids(o); | |
5194 | return ck_fun(o); | |
79072805 LW |
5195 | } |
5196 | ||
5197 | OP * | |
cea2e8a9 | 5198 | Perl_ck_grep(pTHX_ OP *o) |
79072805 LW |
5199 | { |
5200 | LOGOP *gwop; | |
5201 | OP *kid; | |
11343788 | 5202 | OPCODE type = o->op_type == OP_GREPSTART ? OP_GREPWHILE : OP_MAPWHILE; |
79072805 | 5203 | |
22c35a8c | 5204 | o->op_ppaddr = PL_ppaddr[OP_GREPSTART]; |
b7dc083c | 5205 | NewOp(1101, gwop, 1, LOGOP); |
aeea060c | 5206 | |
11343788 | 5207 | if (o->op_flags & OPf_STACKED) { |
a0d0e21e | 5208 | OP* k; |
11343788 MB |
5209 | o = ck_sort(o); |
5210 | kid = cLISTOPo->op_first->op_sibling; | |
5211 | for (k = cLISTOPo->op_first->op_sibling->op_next; k; k = k->op_next) { | |
a0d0e21e LW |
5212 | kid = k; |
5213 | } | |
5214 | kid->op_next = (OP*)gwop; | |
11343788 | 5215 | o->op_flags &= ~OPf_STACKED; |
93a17b20 | 5216 | } |
11343788 | 5217 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e LW |
5218 | if (type == OP_MAPWHILE) |
5219 | list(kid); | |
5220 | else | |
5221 | scalar(kid); | |
11343788 | 5222 | o = ck_fun(o); |
3280af22 | 5223 | if (PL_error_count) |
11343788 | 5224 | return o; |
aeea060c | 5225 | kid = cLISTOPo->op_first->op_sibling; |
79072805 | 5226 | if (kid->op_type != OP_NULL) |
cea2e8a9 | 5227 | Perl_croak(aTHX_ "panic: ck_grep"); |
79072805 LW |
5228 | kid = kUNOP->op_first; |
5229 | ||
a0d0e21e | 5230 | gwop->op_type = type; |
22c35a8c | 5231 | gwop->op_ppaddr = PL_ppaddr[type]; |
11343788 | 5232 | gwop->op_first = listkids(o); |
79072805 LW |
5233 | gwop->op_flags |= OPf_KIDS; |
5234 | gwop->op_private = 1; | |
5235 | gwop->op_other = LINKLIST(kid); | |
a0d0e21e | 5236 | gwop->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 LW |
5237 | kid->op_next = (OP*)gwop; |
5238 | ||
11343788 | 5239 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e | 5240 | if (!kid || !kid->op_sibling) |
22c35a8c | 5241 | return too_few_arguments(o,PL_op_desc[o->op_type]); |
a0d0e21e LW |
5242 | for (kid = kid->op_sibling; kid; kid = kid->op_sibling) |
5243 | mod(kid, OP_GREPSTART); | |
5244 | ||
79072805 LW |
5245 | return (OP*)gwop; |
5246 | } | |
5247 | ||
5248 | OP * | |
cea2e8a9 | 5249 | Perl_ck_index(pTHX_ OP *o) |
79072805 | 5250 | { |
11343788 MB |
5251 | if (o->op_flags & OPf_KIDS) { |
5252 | OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
0b71040e LW |
5253 | if (kid) |
5254 | kid = kid->op_sibling; /* get past "big" */ | |
79072805 | 5255 | if (kid && kid->op_type == OP_CONST) |
2779dcf1 | 5256 | fbm_compile(((SVOP*)kid)->op_sv, 0); |
79072805 | 5257 | } |
11343788 | 5258 | return ck_fun(o); |
79072805 LW |
5259 | } |
5260 | ||
5261 | OP * | |
cea2e8a9 | 5262 | Perl_ck_lengthconst(pTHX_ OP *o) |
79072805 LW |
5263 | { |
5264 | /* XXX length optimization goes here */ | |
11343788 | 5265 | return ck_fun(o); |
79072805 LW |
5266 | } |
5267 | ||
5268 | OP * | |
cea2e8a9 | 5269 | Perl_ck_lfun(pTHX_ OP *o) |
79072805 | 5270 | { |
5dc0d613 MB |
5271 | OPCODE type = o->op_type; |
5272 | return modkids(ck_fun(o), type); | |
79072805 LW |
5273 | } |
5274 | ||
5275 | OP * | |
cea2e8a9 | 5276 | Perl_ck_defined(pTHX_ OP *o) /* 19990527 MJD */ |
69794302 | 5277 | { |
20ce7b12 | 5278 | dTHR; |
d0334bed GS |
5279 | if ((o->op_flags & OPf_KIDS) && ckWARN(WARN_DEPRECATED)) { |
5280 | switch (cUNOPo->op_first->op_type) { | |
5281 | case OP_RV2AV: | |
7e291ef1 | 5282 | break; /* Globals via GV can be undef */ |
d0334bed GS |
5283 | case OP_PADAV: |
5284 | case OP_AASSIGN: /* Is this a good idea? */ | |
5285 | Perl_warner(aTHX_ WARN_DEPRECATED, | |
f10b0346 | 5286 | "defined(@array) is deprecated"); |
d0334bed GS |
5287 | Perl_warner(aTHX_ WARN_DEPRECATED, |
5288 | "(Maybe you should just omit the defined()?)\n"); | |
69794302 | 5289 | break; |
d0334bed | 5290 | case OP_RV2HV: |
7e291ef1 | 5291 | break; /* Globals via GV can be undef */ |
d0334bed GS |
5292 | case OP_PADHV: |
5293 | Perl_warner(aTHX_ WARN_DEPRECATED, | |
f10b0346 | 5294 | "defined(%hash) is deprecated"); |
d0334bed GS |
5295 | Perl_warner(aTHX_ WARN_DEPRECATED, |
5296 | "(Maybe you should just omit the defined()?)\n"); | |
5297 | break; | |
5298 | default: | |
5299 | /* no warning */ | |
5300 | break; | |
5301 | } | |
69794302 MJD |
5302 | } |
5303 | return ck_rfun(o); | |
5304 | } | |
5305 | ||
5306 | OP * | |
cea2e8a9 | 5307 | Perl_ck_rfun(pTHX_ OP *o) |
8990e307 | 5308 | { |
5dc0d613 MB |
5309 | OPCODE type = o->op_type; |
5310 | return refkids(ck_fun(o), type); | |
8990e307 LW |
5311 | } |
5312 | ||
5313 | OP * | |
cea2e8a9 | 5314 | Perl_ck_listiob(pTHX_ OP *o) |
79072805 LW |
5315 | { |
5316 | register OP *kid; | |
aeea060c | 5317 | |
11343788 | 5318 | kid = cLISTOPo->op_first; |
79072805 | 5319 | if (!kid) { |
11343788 MB |
5320 | o = force_list(o); |
5321 | kid = cLISTOPo->op_first; | |
79072805 LW |
5322 | } |
5323 | if (kid->op_type == OP_PUSHMARK) | |
5324 | kid = kid->op_sibling; | |
11343788 | 5325 | if (kid && o->op_flags & OPf_STACKED) |
79072805 LW |
5326 | kid = kid->op_sibling; |
5327 | else if (kid && !kid->op_sibling) { /* print HANDLE; */ | |
5328 | if (kid->op_type == OP_CONST && kid->op_private & OPpCONST_BARE) { | |
11343788 | 5329 | o->op_flags |= OPf_STACKED; /* make it a filehandle */ |
748a9306 | 5330 | kid = newUNOP(OP_RV2GV, OPf_REF, scalar(kid)); |
11343788 MB |
5331 | cLISTOPo->op_first->op_sibling = kid; |
5332 | cLISTOPo->op_last = kid; | |
79072805 LW |
5333 | kid = kid->op_sibling; |
5334 | } | |
5335 | } | |
5336 | ||
5337 | if (!kid) | |
54b9620d | 5338 | append_elem(o->op_type, o, newDEFSVOP()); |
79072805 | 5339 | |
5dc0d613 | 5340 | o = listkids(o); |
bbce6d69 | 5341 | |
5dc0d613 | 5342 | o->op_private = 0; |
36477c24 | 5343 | #ifdef USE_LOCALE |
3280af22 | 5344 | if (PL_hints & HINT_LOCALE) |
5dc0d613 | 5345 | o->op_private |= OPpLOCALE; |
bbce6d69 | 5346 | #endif |
5347 | ||
5dc0d613 | 5348 | return o; |
bbce6d69 | 5349 | } |
5350 | ||
5351 | OP * | |
cea2e8a9 | 5352 | Perl_ck_fun_locale(pTHX_ OP *o) |
bbce6d69 | 5353 | { |
5dc0d613 | 5354 | o = ck_fun(o); |
bbce6d69 | 5355 | |
5dc0d613 | 5356 | o->op_private = 0; |
36477c24 | 5357 | #ifdef USE_LOCALE |
3280af22 | 5358 | if (PL_hints & HINT_LOCALE) |
5dc0d613 | 5359 | o->op_private |= OPpLOCALE; |
bbce6d69 | 5360 | #endif |
5361 | ||
5dc0d613 | 5362 | return o; |
bbce6d69 | 5363 | } |
5364 | ||
5365 | OP * | |
b162f9ea IZ |
5366 | Perl_ck_sassign(pTHX_ OP *o) |
5367 | { | |
5368 | OP *kid = cLISTOPo->op_first; | |
5369 | /* has a disposable target? */ | |
5370 | if ((PL_opargs[kid->op_type] & OA_TARGLEX) | |
5371 | && !(kid->op_flags & OPf_STACKED)) | |
5372 | { | |
5373 | OP *kkid = kid->op_sibling; | |
5374 | ||
5375 | /* Can just relocate the target. */ | |
2c2d71f5 JH |
5376 | if (kkid && kkid->op_type == OP_PADSV |
5377 | && !(kkid->op_private & OPpLVAL_INTRO)) | |
5378 | { | |
b162f9ea | 5379 | /* Concat has problems if target is equal to right arg. */ |
3dbf192b IZ |
5380 | if (kid->op_type == OP_CONCAT) { |
5381 | if (kLISTOP->op_first->op_sibling->op_type == OP_PADSV | |
5382 | && kLISTOP->op_first->op_sibling->op_targ == kkid->op_targ) | |
5383 | return o; | |
b162f9ea | 5384 | } |
3dbf192b IZ |
5385 | else if (kid->op_type == OP_JOIN) { |
5386 | /* do_join has problems if the arguments coincide with target. | |
c212fd85 IZ |
5387 | In fact the second argument *can* safely coincide, |
5388 | but ignore=pessimize this rare occasion. */ | |
5389 | OP *arg = kLISTOP->op_first->op_sibling; /* Skip PUSHMARK */ | |
5390 | ||
5391 | while (arg) { | |
5392 | if (arg->op_type == OP_PADSV | |
5393 | && arg->op_targ == kkid->op_targ) | |
5394 | return o; | |
5395 | arg = arg->op_sibling; | |
5396 | } | |
5397 | } | |
3dbf192b IZ |
5398 | else if (kid->op_type == OP_QUOTEMETA) { |
5399 | /* quotemeta has problems if the argument coincides with target. */ | |
5400 | if (kLISTOP->op_first->op_type == OP_PADSV | |
5401 | && kLISTOP->op_first->op_targ == kkid->op_targ) | |
5402 | return o; | |
5403 | } | |
b162f9ea IZ |
5404 | kid->op_targ = kkid->op_targ; |
5405 | /* Now we do not need PADSV and SASSIGN. */ | |
5406 | kid->op_sibling = o->op_sibling; /* NULL */ | |
5407 | cLISTOPo->op_first = NULL; | |
5408 | op_free(o); | |
5409 | op_free(kkid); | |
5410 | kid->op_private |= OPpTARGET_MY; /* Used for context settings */ | |
5411 | return kid; | |
5412 | } | |
5413 | } | |
5414 | return o; | |
5415 | } | |
5416 | ||
5417 | OP * | |
cea2e8a9 | 5418 | Perl_ck_scmp(pTHX_ OP *o) |
bbce6d69 | 5419 | { |
5dc0d613 | 5420 | o->op_private = 0; |
36477c24 | 5421 | #ifdef USE_LOCALE |
3280af22 | 5422 | if (PL_hints & HINT_LOCALE) |
5dc0d613 | 5423 | o->op_private |= OPpLOCALE; |
bbce6d69 | 5424 | #endif |
36477c24 | 5425 | |
5dc0d613 | 5426 | return o; |
79072805 LW |
5427 | } |
5428 | ||
5429 | OP * | |
cea2e8a9 | 5430 | Perl_ck_match(pTHX_ OP *o) |
79072805 | 5431 | { |
5dc0d613 | 5432 | o->op_private |= OPpRUNTIME; |
11343788 | 5433 | return o; |
79072805 LW |
5434 | } |
5435 | ||
5436 | OP * | |
f5d5a27c CS |
5437 | Perl_ck_method(pTHX_ OP *o) |
5438 | { | |
5439 | OP *kid = cUNOPo->op_first; | |
5440 | if (kid->op_type == OP_CONST) { | |
5441 | SV* sv = kSVOP->op_sv; | |
5442 | if (!(strchr(SvPVX(sv), ':') || strchr(SvPVX(sv), '\''))) { | |
5443 | OP *cmop; | |
5444 | sv_upgrade(sv, SVt_PVIV); | |
5445 | SvIOK_on(sv); | |
5446 | PERL_HASH(SvUVX(sv), SvPVX(sv), SvCUR(sv)); | |
5447 | cmop = newSVOP(OP_METHOD_NAMED, 0, sv); | |
5448 | kSVOP->op_sv = Nullsv; | |
5449 | op_free(o); | |
5450 | return cmop; | |
5451 | } | |
5452 | } | |
5453 | return o; | |
5454 | } | |
5455 | ||
5456 | OP * | |
cea2e8a9 | 5457 | Perl_ck_null(pTHX_ OP *o) |
79072805 | 5458 | { |
11343788 | 5459 | return o; |
79072805 LW |
5460 | } |
5461 | ||
5462 | OP * | |
cea2e8a9 | 5463 | Perl_ck_repeat(pTHX_ OP *o) |
79072805 | 5464 | { |
11343788 MB |
5465 | if (cBINOPo->op_first->op_flags & OPf_PARENS) { |
5466 | o->op_private |= OPpREPEAT_DOLIST; | |
5467 | cBINOPo->op_first = force_list(cBINOPo->op_first); | |
79072805 LW |
5468 | } |
5469 | else | |
11343788 MB |
5470 | scalar(o); |
5471 | return o; | |
79072805 LW |
5472 | } |
5473 | ||
5474 | OP * | |
cea2e8a9 | 5475 | Perl_ck_require(pTHX_ OP *o) |
8990e307 | 5476 | { |
11343788 MB |
5477 | if (o->op_flags & OPf_KIDS) { /* Shall we supply missing .pm? */ |
5478 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
8990e307 LW |
5479 | |
5480 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
8990e307 | 5481 | char *s; |
a0d0e21e LW |
5482 | for (s = SvPVX(kid->op_sv); *s; s++) { |
5483 | if (*s == ':' && s[1] == ':') { | |
5484 | *s = '/'; | |
1aef975c | 5485 | Move(s+2, s+1, strlen(s+2)+1, char); |
a0d0e21e LW |
5486 | --SvCUR(kid->op_sv); |
5487 | } | |
8990e307 | 5488 | } |
a0d0e21e | 5489 | sv_catpvn(kid->op_sv, ".pm", 3); |
8990e307 LW |
5490 | } |
5491 | } | |
11343788 | 5492 | return ck_fun(o); |
8990e307 LW |
5493 | } |
5494 | ||
22c35a8c | 5495 | #if 0 |
8990e307 | 5496 | OP * |
cea2e8a9 | 5497 | Perl_ck_retarget(pTHX_ OP *o) |
79072805 | 5498 | { |
cea2e8a9 | 5499 | Perl_croak(aTHX_ "NOT IMPL LINE %d",__LINE__); |
79072805 | 5500 | /* STUB */ |
11343788 | 5501 | return o; |
79072805 | 5502 | } |
22c35a8c | 5503 | #endif |
79072805 LW |
5504 | |
5505 | OP * | |
cea2e8a9 | 5506 | Perl_ck_select(pTHX_ OP *o) |
79072805 | 5507 | { |
c07a80fd | 5508 | OP* kid; |
11343788 MB |
5509 | if (o->op_flags & OPf_KIDS) { |
5510 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
2304df62 | 5511 | if (kid && kid->op_sibling) { |
11343788 | 5512 | o->op_type = OP_SSELECT; |
22c35a8c | 5513 | o->op_ppaddr = PL_ppaddr[OP_SSELECT]; |
11343788 MB |
5514 | o = ck_fun(o); |
5515 | return fold_constants(o); | |
79072805 LW |
5516 | } |
5517 | } | |
11343788 MB |
5518 | o = ck_fun(o); |
5519 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
c07a80fd | 5520 | if (kid && kid->op_type == OP_RV2GV) |
5521 | kid->op_private &= ~HINT_STRICT_REFS; | |
11343788 | 5522 | return o; |
79072805 LW |
5523 | } |
5524 | ||
5525 | OP * | |
cea2e8a9 | 5526 | Perl_ck_shift(pTHX_ OP *o) |
79072805 | 5527 | { |
11343788 | 5528 | I32 type = o->op_type; |
79072805 | 5529 | |
11343788 | 5530 | if (!(o->op_flags & OPf_KIDS)) { |
6d4ff0d2 MB |
5531 | OP *argop; |
5532 | ||
11343788 | 5533 | op_free(o); |
6d4ff0d2 | 5534 | #ifdef USE_THREADS |
533c011a | 5535 | if (!CvUNIQUE(PL_compcv)) { |
6d4ff0d2 | 5536 | argop = newOP(OP_PADAV, OPf_REF); |
6b88bc9c | 5537 | argop->op_targ = 0; /* PL_curpad[0] is @_ */ |
6d4ff0d2 MB |
5538 | } |
5539 | else { | |
5540 | argop = newUNOP(OP_RV2AV, 0, | |
5541 | scalar(newGVOP(OP_GV, 0, | |
5542 | gv_fetchpv("ARGV", TRUE, SVt_PVAV)))); | |
5543 | } | |
5544 | #else | |
5545 | argop = newUNOP(OP_RV2AV, 0, | |
3280af22 NIS |
5546 | scalar(newGVOP(OP_GV, 0, !CvUNIQUE(PL_compcv) ? |
5547 | PL_defgv : gv_fetchpv("ARGV", TRUE, SVt_PVAV)))); | |
6d4ff0d2 MB |
5548 | #endif /* USE_THREADS */ |
5549 | return newUNOP(type, 0, scalar(argop)); | |
79072805 | 5550 | } |
11343788 | 5551 | return scalar(modkids(ck_fun(o), type)); |
79072805 LW |
5552 | } |
5553 | ||
5554 | OP * | |
cea2e8a9 | 5555 | Perl_ck_sort(pTHX_ OP *o) |
79072805 | 5556 | { |
5dc0d613 | 5557 | o->op_private = 0; |
36477c24 | 5558 | #ifdef USE_LOCALE |
3280af22 | 5559 | if (PL_hints & HINT_LOCALE) |
5dc0d613 | 5560 | o->op_private |= OPpLOCALE; |
bbce6d69 | 5561 | #endif |
5562 | ||
9ea6e965 | 5563 | if (o->op_type == OP_SORT && o->op_flags & OPf_STACKED) |
51a19bc0 | 5564 | simplify_sort(o); |
9c007264 | 5565 | if (o->op_flags & OPf_STACKED) { /* may have been cleared */ |
11343788 | 5566 | OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
463ee0b2 | 5567 | OP *k; |
82092f1d | 5568 | kid = kUNOP->op_first; /* get past null */ |
79072805 | 5569 | |
463ee0b2 | 5570 | if (kid->op_type == OP_SCOPE || kid->op_type == OP_LEAVE) { |
79072805 | 5571 | linklist(kid); |
463ee0b2 LW |
5572 | if (kid->op_type == OP_SCOPE) { |
5573 | k = kid->op_next; | |
5574 | kid->op_next = 0; | |
79072805 | 5575 | } |
463ee0b2 | 5576 | else if (kid->op_type == OP_LEAVE) { |
11343788 | 5577 | if (o->op_type == OP_SORT) { |
748a9306 LW |
5578 | null(kid); /* wipe out leave */ |
5579 | kid->op_next = kid; | |
463ee0b2 | 5580 | |
748a9306 LW |
5581 | for (k = kLISTOP->op_first->op_next; k; k = k->op_next) { |
5582 | if (k->op_next == kid) | |
5583 | k->op_next = 0; | |
5584 | } | |
463ee0b2 | 5585 | } |
748a9306 LW |
5586 | else |
5587 | kid->op_next = 0; /* just disconnect the leave */ | |
a0d0e21e | 5588 | k = kLISTOP->op_first; |
463ee0b2 | 5589 | } |
a0d0e21e LW |
5590 | peep(k); |
5591 | ||
11343788 | 5592 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
11343788 | 5593 | if (o->op_type == OP_SORT) |
a0d0e21e LW |
5594 | kid->op_next = kid; |
5595 | else | |
5596 | kid->op_next = k; | |
11343788 | 5597 | o->op_flags |= OPf_SPECIAL; |
79072805 | 5598 | } |
c6e96bcb GS |
5599 | else if (kid->op_type == OP_RV2SV || kid->op_type == OP_PADSV) |
5600 | null(cLISTOPo->op_first->op_sibling); | |
79072805 | 5601 | } |
bbce6d69 | 5602 | |
11343788 | 5603 | return o; |
79072805 | 5604 | } |
bda4119b GS |
5605 | |
5606 | STATIC void | |
cea2e8a9 | 5607 | S_simplify_sort(pTHX_ OP *o) |
9c007264 | 5608 | { |
51a19bc0 | 5609 | dTHR; |
9c007264 JH |
5610 | register OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
5611 | OP *k; | |
5612 | int reversed; | |
5613 | if (!(o->op_flags & OPf_STACKED)) | |
5614 | return; | |
9ea6e965 GS |
5615 | GvMULTI_on(gv_fetchpv("a", TRUE, SVt_PV)); |
5616 | GvMULTI_on(gv_fetchpv("b", TRUE, SVt_PV)); | |
82092f1d | 5617 | kid = kUNOP->op_first; /* get past null */ |
9c007264 JH |
5618 | if (kid->op_type != OP_SCOPE) |
5619 | return; | |
5620 | kid = kLISTOP->op_last; /* get past scope */ | |
5621 | switch(kid->op_type) { | |
5622 | case OP_NCMP: | |
5623 | case OP_I_NCMP: | |
5624 | case OP_SCMP: | |
5625 | break; | |
5626 | default: | |
5627 | return; | |
5628 | } | |
5629 | k = kid; /* remember this node*/ | |
5630 | if (kBINOP->op_first->op_type != OP_RV2SV) | |
5631 | return; | |
5632 | kid = kBINOP->op_first; /* get past cmp */ | |
5633 | if (kUNOP->op_first->op_type != OP_GV) | |
5634 | return; | |
5635 | kid = kUNOP->op_first; /* get past rv2sv */ | |
5636 | if (GvSTASH(kGVOP->op_gv) != PL_curstash) | |
5637 | return; | |
5638 | if (strEQ(GvNAME(kGVOP->op_gv), "a")) | |
5639 | reversed = 0; | |
5640 | else if(strEQ(GvNAME(kGVOP->op_gv), "b")) | |
5641 | reversed = 1; | |
5642 | else | |
5643 | return; | |
5644 | kid = k; /* back to cmp */ | |
5645 | if (kBINOP->op_last->op_type != OP_RV2SV) | |
5646 | return; | |
5647 | kid = kBINOP->op_last; /* down to 2nd arg */ | |
5648 | if (kUNOP->op_first->op_type != OP_GV) | |
5649 | return; | |
5650 | kid = kUNOP->op_first; /* get past rv2sv */ | |
5651 | if (GvSTASH(kGVOP->op_gv) != PL_curstash | |
5652 | || ( reversed | |
5653 | ? strNE(GvNAME(kGVOP->op_gv), "a") | |
5654 | : strNE(GvNAME(kGVOP->op_gv), "b"))) | |
5655 | return; | |
5656 | o->op_flags &= ~(OPf_STACKED | OPf_SPECIAL); | |
5657 | if (reversed) | |
5658 | o->op_private |= OPpSORT_REVERSE; | |
5659 | if (k->op_type == OP_NCMP) | |
5660 | o->op_private |= OPpSORT_NUMERIC; | |
5661 | if (k->op_type == OP_I_NCMP) | |
5662 | o->op_private |= OPpSORT_NUMERIC | OPpSORT_INTEGER; | |
e507f050 SM |
5663 | kid = cLISTOPo->op_first->op_sibling; |
5664 | cLISTOPo->op_first->op_sibling = kid->op_sibling; /* bypass old block */ | |
5665 | op_free(kid); /* then delete it */ | |
5666 | cLISTOPo->op_children--; | |
9c007264 | 5667 | } |
79072805 LW |
5668 | |
5669 | OP * | |
cea2e8a9 | 5670 | Perl_ck_split(pTHX_ OP *o) |
79072805 LW |
5671 | { |
5672 | register OP *kid; | |
aeea060c | 5673 | |
11343788 MB |
5674 | if (o->op_flags & OPf_STACKED) |
5675 | return no_fh_allowed(o); | |
79072805 | 5676 | |
11343788 | 5677 | kid = cLISTOPo->op_first; |
8990e307 | 5678 | if (kid->op_type != OP_NULL) |
cea2e8a9 | 5679 | Perl_croak(aTHX_ "panic: ck_split"); |
8990e307 | 5680 | kid = kid->op_sibling; |
11343788 MB |
5681 | op_free(cLISTOPo->op_first); |
5682 | cLISTOPo->op_first = kid; | |
85e6fe83 | 5683 | if (!kid) { |
79cb57f6 | 5684 | cLISTOPo->op_first = kid = newSVOP(OP_CONST, 0, newSVpvn(" ", 1)); |
11343788 | 5685 | cLISTOPo->op_last = kid; /* There was only one element previously */ |
85e6fe83 | 5686 | } |
79072805 LW |
5687 | |
5688 | if (kid->op_type != OP_MATCH) { | |
5689 | OP *sibl = kid->op_sibling; | |
463ee0b2 | 5690 | kid->op_sibling = 0; |
79072805 | 5691 | kid = pmruntime( newPMOP(OP_MATCH, OPf_SPECIAL), kid, Nullop); |
11343788 MB |
5692 | if (cLISTOPo->op_first == cLISTOPo->op_last) |
5693 | cLISTOPo->op_last = kid; | |
5694 | cLISTOPo->op_first = kid; | |
79072805 LW |
5695 | kid->op_sibling = sibl; |
5696 | } | |
5697 | ||
5698 | kid->op_type = OP_PUSHRE; | |
22c35a8c | 5699 | kid->op_ppaddr = PL_ppaddr[OP_PUSHRE]; |
79072805 LW |
5700 | scalar(kid); |
5701 | ||
5702 | if (!kid->op_sibling) | |
54b9620d | 5703 | append_elem(OP_SPLIT, o, newDEFSVOP()); |
79072805 LW |
5704 | |
5705 | kid = kid->op_sibling; | |
5706 | scalar(kid); | |
5707 | ||
5708 | if (!kid->op_sibling) | |
11343788 | 5709 | append_elem(OP_SPLIT, o, newSVOP(OP_CONST, 0, newSViv(0))); |
79072805 LW |
5710 | |
5711 | kid = kid->op_sibling; | |
5712 | scalar(kid); | |
5713 | ||
5714 | if (kid->op_sibling) | |
22c35a8c | 5715 | return too_many_arguments(o,PL_op_desc[o->op_type]); |
79072805 | 5716 | |
11343788 | 5717 | return o; |
79072805 LW |
5718 | } |
5719 | ||
5720 | OP * | |
eb6e2d6f GS |
5721 | Perl_ck_join(pTHX_ OP *o) |
5722 | { | |
5723 | if (ckWARN(WARN_SYNTAX)) { | |
5724 | OP *kid = cLISTOPo->op_first->op_sibling; | |
5725 | if (kid && kid->op_type == OP_MATCH) { | |
5726 | char *pmstr = "STRING"; | |
5727 | if (kPMOP->op_pmregexp) | |
5728 | pmstr = kPMOP->op_pmregexp->precomp; | |
5729 | Perl_warner(aTHX_ WARN_SYNTAX, | |
5730 | "/%s/ should probably be written as \"%s\"", | |
5731 | pmstr, pmstr); | |
5732 | } | |
5733 | } | |
5734 | return ck_fun(o); | |
5735 | } | |
5736 | ||
5737 | OP * | |
cea2e8a9 | 5738 | Perl_ck_subr(pTHX_ OP *o) |
79072805 | 5739 | { |
11343788 MB |
5740 | dTHR; |
5741 | OP *prev = ((cUNOPo->op_first->op_sibling) | |
5742 | ? cUNOPo : ((UNOP*)cUNOPo->op_first))->op_first; | |
5743 | OP *o2 = prev->op_sibling; | |
4633a7c4 LW |
5744 | OP *cvop; |
5745 | char *proto = 0; | |
5746 | CV *cv = 0; | |
46fc3d4c | 5747 | GV *namegv = 0; |
4633a7c4 LW |
5748 | int optional = 0; |
5749 | I32 arg = 0; | |
2d8e6c8d | 5750 | STRLEN n_a; |
4633a7c4 | 5751 | |
d3011074 | 5752 | o->op_private |= OPpENTERSUB_HASTARG; |
11343788 | 5753 | for (cvop = o2; cvop->op_sibling; cvop = cvop->op_sibling) ; |
4633a7c4 LW |
5754 | if (cvop->op_type == OP_RV2CV) { |
5755 | SVOP* tmpop; | |
11343788 | 5756 | o->op_private |= (cvop->op_private & OPpENTERSUB_AMPER); |
4633a7c4 LW |
5757 | null(cvop); /* disable rv2cv */ |
5758 | tmpop = (SVOP*)((UNOP*)cvop)->op_first; | |
76cd736e | 5759 | if (tmpop->op_type == OP_GV && !(o->op_private & OPpENTERSUB_AMPER)) { |
8ebc5c01 | 5760 | cv = GvCVu(tmpop->op_sv); |
76cd736e GS |
5761 | if (!cv) |
5762 | tmpop->op_private |= OPpEARLY_CV; | |
5763 | else if (SvPOK(cv)) { | |
46fc3d4c | 5764 | namegv = CvANON(cv) ? (GV*)tmpop->op_sv : CvGV(cv); |
2d8e6c8d | 5765 | proto = SvPV((SV*)cv, n_a); |
46fc3d4c | 5766 | } |
4633a7c4 LW |
5767 | } |
5768 | } | |
f5d5a27c | 5769 | else if (cvop->op_type == OP_METHOD || cvop->op_type == OP_METHOD_NAMED) { |
7a52d87a GS |
5770 | if (o2->op_type == OP_CONST) |
5771 | o2->op_private &= ~OPpCONST_STRICT; | |
58a40671 GS |
5772 | else if (o2->op_type == OP_LIST) { |
5773 | OP *o = ((UNOP*)o2)->op_first->op_sibling; | |
5774 | if (o && o->op_type == OP_CONST) | |
5775 | o->op_private &= ~OPpCONST_STRICT; | |
5776 | } | |
7a52d87a | 5777 | } |
3280af22 NIS |
5778 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
5779 | if (PERLDB_SUB && PL_curstash != PL_debstash) | |
11343788 MB |
5780 | o->op_private |= OPpENTERSUB_DB; |
5781 | while (o2 != cvop) { | |
4633a7c4 LW |
5782 | if (proto) { |
5783 | switch (*proto) { | |
5784 | case '\0': | |
5dc0d613 | 5785 | return too_many_arguments(o, gv_ename(namegv)); |
4633a7c4 LW |
5786 | case ';': |
5787 | optional = 1; | |
5788 | proto++; | |
5789 | continue; | |
5790 | case '$': | |
5791 | proto++; | |
5792 | arg++; | |
11343788 | 5793 | scalar(o2); |
4633a7c4 LW |
5794 | break; |
5795 | case '%': | |
5796 | case '@': | |
11343788 | 5797 | list(o2); |
4633a7c4 LW |
5798 | arg++; |
5799 | break; | |
5800 | case '&': | |
5801 | proto++; | |
5802 | arg++; | |
11343788 | 5803 | if (o2->op_type != OP_REFGEN && o2->op_type != OP_UNDEF) |
5dc0d613 | 5804 | bad_type(arg, "block", gv_ename(namegv), o2); |
4633a7c4 LW |
5805 | break; |
5806 | case '*': | |
2ba6ecf4 | 5807 | /* '*' allows any scalar type, including bareword */ |
4633a7c4 LW |
5808 | proto++; |
5809 | arg++; | |
11343788 | 5810 | if (o2->op_type == OP_RV2GV) |
2ba6ecf4 | 5811 | goto wrapref; /* autoconvert GLOB -> GLOBref */ |
7a52d87a GS |
5812 | else if (o2->op_type == OP_CONST) |
5813 | o2->op_private &= ~OPpCONST_STRICT; | |
9675f7ac GS |
5814 | else if (o2->op_type == OP_ENTERSUB) { |
5815 | /* accidental subroutine, revert to bareword */ | |
5816 | OP *gvop = ((UNOP*)o2)->op_first; | |
5817 | if (gvop && gvop->op_type == OP_NULL) { | |
5818 | gvop = ((UNOP*)gvop)->op_first; | |
5819 | if (gvop) { | |
5820 | for (; gvop->op_sibling; gvop = gvop->op_sibling) | |
5821 | ; | |
5822 | if (gvop && | |
5823 | (gvop->op_private & OPpENTERSUB_NOPAREN) && | |
5824 | (gvop = ((UNOP*)gvop)->op_first) && | |
5825 | gvop->op_type == OP_GV) | |
5826 | { | |
5827 | GV *gv = (GV*)((SVOP*)gvop)->op_sv; | |
5828 | OP *sibling = o2->op_sibling; | |
2692f720 | 5829 | SV *n = newSVpvn("",0); |
9675f7ac | 5830 | op_free(o2); |
2692f720 GS |
5831 | gv_fullname3(n, gv, ""); |
5832 | if (SvCUR(n)>6 && strnEQ(SvPVX(n),"main::",6)) | |
5833 | sv_chop(n, SvPVX(n)+6); | |
5834 | o2 = newSVOP(OP_CONST, 0, n); | |
9675f7ac GS |
5835 | prev->op_sibling = o2; |
5836 | o2->op_sibling = sibling; | |
5837 | } | |
5838 | } | |
5839 | } | |
5840 | } | |
2ba6ecf4 GS |
5841 | scalar(o2); |
5842 | break; | |
4633a7c4 LW |
5843 | case '\\': |
5844 | proto++; | |
5845 | arg++; | |
5846 | switch (*proto++) { | |
5847 | case '*': | |
11343788 | 5848 | if (o2->op_type != OP_RV2GV) |
5dc0d613 | 5849 | bad_type(arg, "symbol", gv_ename(namegv), o2); |
4633a7c4 LW |
5850 | goto wrapref; |
5851 | case '&': | |
11343788 | 5852 | if (o2->op_type != OP_RV2CV) |
5dc0d613 | 5853 | bad_type(arg, "sub", gv_ename(namegv), o2); |
4633a7c4 LW |
5854 | goto wrapref; |
5855 | case '$': | |
386acf99 GS |
5856 | if (o2->op_type != OP_RV2SV |
5857 | && o2->op_type != OP_PADSV | |
1c01eb51 GS |
5858 | && o2->op_type != OP_HELEM |
5859 | && o2->op_type != OP_AELEM | |
386acf99 GS |
5860 | && o2->op_type != OP_THREADSV) |
5861 | { | |
5dc0d613 | 5862 | bad_type(arg, "scalar", gv_ename(namegv), o2); |
386acf99 | 5863 | } |
4633a7c4 LW |
5864 | goto wrapref; |
5865 | case '@': | |
11343788 | 5866 | if (o2->op_type != OP_RV2AV && o2->op_type != OP_PADAV) |
5dc0d613 | 5867 | bad_type(arg, "array", gv_ename(namegv), o2); |
4633a7c4 LW |
5868 | goto wrapref; |
5869 | case '%': | |
11343788 | 5870 | if (o2->op_type != OP_RV2HV && o2->op_type != OP_PADHV) |
5dc0d613 | 5871 | bad_type(arg, "hash", gv_ename(namegv), o2); |
4633a7c4 LW |
5872 | wrapref: |
5873 | { | |
11343788 | 5874 | OP* kid = o2; |
6fa846a0 | 5875 | OP* sib = kid->op_sibling; |
4633a7c4 | 5876 | kid->op_sibling = 0; |
6fa846a0 GS |
5877 | o2 = newUNOP(OP_REFGEN, 0, kid); |
5878 | o2->op_sibling = sib; | |
e858de61 | 5879 | prev->op_sibling = o2; |
4633a7c4 LW |
5880 | } |
5881 | break; | |
5882 | default: goto oops; | |
5883 | } | |
5884 | break; | |
b1cb66bf | 5885 | case ' ': |
5886 | proto++; | |
5887 | continue; | |
4633a7c4 LW |
5888 | default: |
5889 | oops: | |
cea2e8a9 | 5890 | Perl_croak(aTHX_ "Malformed prototype for %s: %s", |
2d8e6c8d | 5891 | gv_ename(namegv), SvPV((SV*)cv, n_a)); |
4633a7c4 LW |
5892 | } |
5893 | } | |
5894 | else | |
11343788 MB |
5895 | list(o2); |
5896 | mod(o2, OP_ENTERSUB); | |
5897 | prev = o2; | |
5898 | o2 = o2->op_sibling; | |
4633a7c4 | 5899 | } |
fb73857a | 5900 | if (proto && !optional && |
5901 | (*proto && *proto != '@' && *proto != '%' && *proto != ';')) | |
5dc0d613 | 5902 | return too_few_arguments(o, gv_ename(namegv)); |
11343788 | 5903 | return o; |
79072805 LW |
5904 | } |
5905 | ||
5906 | OP * | |
cea2e8a9 | 5907 | Perl_ck_svconst(pTHX_ OP *o) |
8990e307 | 5908 | { |
11343788 MB |
5909 | SvREADONLY_on(cSVOPo->op_sv); |
5910 | return o; | |
8990e307 LW |
5911 | } |
5912 | ||
5913 | OP * | |
cea2e8a9 | 5914 | Perl_ck_trunc(pTHX_ OP *o) |
79072805 | 5915 | { |
11343788 MB |
5916 | if (o->op_flags & OPf_KIDS) { |
5917 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 | 5918 | |
a0d0e21e LW |
5919 | if (kid->op_type == OP_NULL) |
5920 | kid = (SVOP*)kid->op_sibling; | |
bb53490d GS |
5921 | if (kid && kid->op_type == OP_CONST && |
5922 | (kid->op_private & OPpCONST_BARE)) | |
5923 | { | |
11343788 | 5924 | o->op_flags |= OPf_SPECIAL; |
bb53490d GS |
5925 | kid->op_private &= ~OPpCONST_STRICT; |
5926 | } | |
79072805 | 5927 | } |
11343788 | 5928 | return ck_fun(o); |
79072805 LW |
5929 | } |
5930 | ||
463ee0b2 LW |
5931 | /* A peephole optimizer. We visit the ops in the order they're to execute. */ |
5932 | ||
79072805 | 5933 | void |
864dbfa3 | 5934 | Perl_peep(pTHX_ register OP *o) |
79072805 | 5935 | { |
11343788 | 5936 | dTHR; |
79072805 | 5937 | register OP* oldop = 0; |
2d8e6c8d | 5938 | STRLEN n_a; |
cd06dffe | 5939 | OP *last_composite = Nullop; |
2d8e6c8d | 5940 | |
a0d0e21e | 5941 | if (!o || o->op_seq) |
79072805 | 5942 | return; |
a0d0e21e | 5943 | ENTER; |
462e5cf6 | 5944 | SAVEOP(); |
3280af22 | 5945 | SAVESPTR(PL_curcop); |
a0d0e21e LW |
5946 | for (; o; o = o->op_next) { |
5947 | if (o->op_seq) | |
5948 | break; | |
3280af22 NIS |
5949 | if (!PL_op_seqmax) |
5950 | PL_op_seqmax++; | |
533c011a | 5951 | PL_op = o; |
a0d0e21e | 5952 | switch (o->op_type) { |
acb36ea4 | 5953 | case OP_SETSTATE: |
a0d0e21e LW |
5954 | case OP_NEXTSTATE: |
5955 | case OP_DBSTATE: | |
3280af22 NIS |
5956 | PL_curcop = ((COP*)o); /* for warnings */ |
5957 | o->op_seq = PL_op_seqmax++; | |
cd06dffe | 5958 | last_composite = Nullop; |
a0d0e21e LW |
5959 | break; |
5960 | ||
a0d0e21e | 5961 | case OP_CONST: |
7a52d87a GS |
5962 | if (cSVOPo->op_private & OPpCONST_STRICT) |
5963 | no_bareword_allowed(o); | |
5964 | /* FALL THROUGH */ | |
a0d0e21e LW |
5965 | case OP_UC: |
5966 | case OP_UCFIRST: | |
5967 | case OP_LC: | |
5968 | case OP_LCFIRST: | |
ed7ab888 GS |
5969 | if ( o->op_next && o->op_next->op_type == OP_STRINGIFY |
5970 | && !(o->op_next->op_private & OPpTARGET_MY) ) | |
5971 | null(o->op_next); | |
5972 | o->op_seq = PL_op_seqmax++; | |
5973 | break; | |
5974 | case OP_CONCAT: | |
5975 | case OP_JOIN: | |
a0d0e21e | 5976 | case OP_QUOTEMETA: |
b162f9ea IZ |
5977 | if (o->op_next && o->op_next->op_type == OP_STRINGIFY) { |
5978 | if (o->op_next->op_private & OPpTARGET_MY) { | |
ed7ab888 | 5979 | if ((o->op_flags & OPf_STACKED) /* chained concats */ |
b162f9ea IZ |
5980 | || (o->op_type == OP_CONCAT |
5981 | /* Concat has problems if target is equal to right arg. */ | |
5982 | && (((LISTOP*)o)->op_first->op_sibling->op_type | |
5983 | == OP_PADSV) | |
5984 | && (((LISTOP*)o)->op_first->op_sibling->op_targ | |
5985 | == o->op_next->op_targ))) { | |
5986 | goto ignore_optimization; | |
cd06dffe GS |
5987 | } |
5988 | else { | |
b162f9ea | 5989 | o->op_targ = o->op_next->op_targ; |
2c2d71f5 | 5990 | o->op_private |= OPpTARGET_MY; |
b162f9ea IZ |
5991 | } |
5992 | } | |
a0d0e21e | 5993 | null(o->op_next); |
b162f9ea IZ |
5994 | } |
5995 | ignore_optimization: | |
3280af22 | 5996 | o->op_seq = PL_op_seqmax++; |
a0d0e21e | 5997 | break; |
8990e307 | 5998 | case OP_STUB: |
54310121 | 5999 | if ((o->op_flags & OPf_WANT) != OPf_WANT_LIST) { |
3280af22 | 6000 | o->op_seq = PL_op_seqmax++; |
54310121 | 6001 | break; /* Scalar stub must produce undef. List stub is noop */ |
8990e307 | 6002 | } |
748a9306 | 6003 | goto nothin; |
79072805 | 6004 | case OP_NULL: |
acb36ea4 GS |
6005 | if (o->op_targ == OP_NEXTSTATE |
6006 | || o->op_targ == OP_DBSTATE | |
6007 | || o->op_targ == OP_SETSTATE) | |
6008 | { | |
3280af22 | 6009 | PL_curcop = ((COP*)o); |
acb36ea4 | 6010 | } |
748a9306 | 6011 | goto nothin; |
79072805 | 6012 | case OP_SCALAR: |
93a17b20 | 6013 | case OP_LINESEQ: |
463ee0b2 | 6014 | case OP_SCOPE: |
748a9306 | 6015 | nothin: |
a0d0e21e LW |
6016 | if (oldop && o->op_next) { |
6017 | oldop->op_next = o->op_next; | |
79072805 LW |
6018 | continue; |
6019 | } | |
3280af22 | 6020 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
6021 | break; |
6022 | ||
6023 | case OP_GV: | |
a0d0e21e | 6024 | if (o->op_next->op_type == OP_RV2SV) { |
5f05dabc | 6025 | if (!(o->op_next->op_private & OPpDEREF)) { |
a0d0e21e LW |
6026 | null(o->op_next); |
6027 | o->op_private |= o->op_next->op_private & OPpLVAL_INTRO; | |
6028 | o->op_next = o->op_next->op_next; | |
6029 | o->op_type = OP_GVSV; | |
22c35a8c | 6030 | o->op_ppaddr = PL_ppaddr[OP_GVSV]; |
8990e307 LW |
6031 | } |
6032 | } | |
a0d0e21e LW |
6033 | else if (o->op_next->op_type == OP_RV2AV) { |
6034 | OP* pop = o->op_next->op_next; | |
6035 | IV i; | |
8990e307 | 6036 | if (pop->op_type == OP_CONST && |
533c011a | 6037 | (PL_op = pop->op_next) && |
8990e307 | 6038 | pop->op_next->op_type == OP_AELEM && |
a0d0e21e | 6039 | !(pop->op_next->op_private & |
68dc0745 | 6040 | (OPpLVAL_INTRO|OPpLVAL_DEFER|OPpDEREF)) && |
3280af22 | 6041 | (i = SvIV(((SVOP*)pop)->op_sv) - PL_compiling.cop_arybase) |
a0d0e21e | 6042 | <= 255 && |
8990e307 LW |
6043 | i >= 0) |
6044 | { | |
a0d0e21e | 6045 | null(o->op_next); |
8990e307 LW |
6046 | null(pop->op_next); |
6047 | null(pop); | |
a0d0e21e LW |
6048 | o->op_flags |= pop->op_next->op_flags & OPf_MOD; |
6049 | o->op_next = pop->op_next->op_next; | |
6050 | o->op_type = OP_AELEMFAST; | |
22c35a8c | 6051 | o->op_ppaddr = PL_ppaddr[OP_AELEMFAST]; |
a0d0e21e | 6052 | o->op_private = (U8)i; |
a6006777 | 6053 | GvAVn(((GVOP*)o)->op_gv); |
8990e307 | 6054 | } |
79072805 | 6055 | } |
76cd736e GS |
6056 | else if ((o->op_private & OPpEARLY_CV) && ckWARN(WARN_UNSAFE)) { |
6057 | GV *gv = cGVOPo->op_gv; | |
6058 | if (SvTYPE(gv) == SVt_PVGV && GvCV(gv) && SvPVX(GvCV(gv))) { | |
6059 | /* XXX could check prototype here instead of just carping */ | |
6060 | SV *sv = sv_newmortal(); | |
6061 | gv_efullname3(sv, gv, Nullch); | |
6062 | Perl_warner(aTHX_ WARN_UNSAFE, | |
6063 | "%s() called too early to check prototype", | |
6064 | SvPV_nolen(sv)); | |
6065 | } | |
6066 | } | |
6067 | ||
3280af22 | 6068 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
6069 | break; |
6070 | ||
a0d0e21e | 6071 | case OP_MAPWHILE: |
79072805 LW |
6072 | case OP_GREPWHILE: |
6073 | case OP_AND: | |
6074 | case OP_OR: | |
2c2d71f5 JH |
6075 | case OP_ANDASSIGN: |
6076 | case OP_ORASSIGN: | |
1a67a97c SM |
6077 | case OP_COND_EXPR: |
6078 | case OP_RANGE: | |
3280af22 | 6079 | o->op_seq = PL_op_seqmax++; |
fd4d1407 IZ |
6080 | while (cLOGOP->op_other->op_type == OP_NULL) |
6081 | cLOGOP->op_other = cLOGOP->op_other->op_next; | |
79072805 LW |
6082 | peep(cLOGOP->op_other); |
6083 | break; | |
6084 | ||
79072805 | 6085 | case OP_ENTERLOOP: |
3280af22 | 6086 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
6087 | peep(cLOOP->op_redoop); |
6088 | peep(cLOOP->op_nextop); | |
6089 | peep(cLOOP->op_lastop); | |
6090 | break; | |
6091 | ||
8782bef2 | 6092 | case OP_QR: |
79072805 LW |
6093 | case OP_MATCH: |
6094 | case OP_SUBST: | |
3280af22 | 6095 | o->op_seq = PL_op_seqmax++; |
a0d0e21e | 6096 | peep(cPMOP->op_pmreplstart); |
79072805 LW |
6097 | break; |
6098 | ||
a0d0e21e | 6099 | case OP_EXEC: |
3280af22 | 6100 | o->op_seq = PL_op_seqmax++; |
599cee73 PM |
6101 | if (ckWARN(WARN_SYNTAX) && o->op_next |
6102 | && o->op_next->op_type == OP_NEXTSTATE) { | |
a0d0e21e | 6103 | if (o->op_next->op_sibling && |
20408e3c GS |
6104 | o->op_next->op_sibling->op_type != OP_EXIT && |
6105 | o->op_next->op_sibling->op_type != OP_WARN && | |
a0d0e21e | 6106 | o->op_next->op_sibling->op_type != OP_DIE) { |
3280af22 | 6107 | line_t oldline = PL_curcop->cop_line; |
a0d0e21e | 6108 | |
3280af22 | 6109 | PL_curcop->cop_line = ((COP*)o->op_next)->cop_line; |
cea2e8a9 GS |
6110 | Perl_warner(aTHX_ WARN_SYNTAX, "Statement unlikely to be reached"); |
6111 | Perl_warner(aTHX_ WARN_SYNTAX, "(Maybe you meant system() when you said exec()?)\n"); | |
3280af22 | 6112 | PL_curcop->cop_line = oldline; |
a0d0e21e LW |
6113 | } |
6114 | } | |
6115 | break; | |
aeea060c | 6116 | |
c750a3ec MB |
6117 | case OP_HELEM: { |
6118 | UNOP *rop; | |
6119 | SV *lexname; | |
6120 | GV **fields; | |
6121 | SV **svp, **indsvp; | |
6122 | I32 ind; | |
6123 | char *key; | |
6124 | STRLEN keylen; | |
aeea060c | 6125 | |
377b21bb | 6126 | if ((o->op_private & (OPpLVAL_INTRO)) |
c750a3ec MB |
6127 | || ((BINOP*)o)->op_last->op_type != OP_CONST) |
6128 | break; | |
6129 | rop = (UNOP*)((BINOP*)o)->op_first; | |
6130 | if (rop->op_type != OP_RV2HV || rop->op_first->op_type != OP_PADSV) | |
6131 | break; | |
3280af22 | 6132 | lexname = *av_fetch(PL_comppad_name, rop->op_first->op_targ, TRUE); |
c750a3ec MB |
6133 | if (!SvOBJECT(lexname)) |
6134 | break; | |
5196be3e | 6135 | fields = (GV**)hv_fetch(SvSTASH(lexname), "FIELDS", 6, FALSE); |
c750a3ec MB |
6136 | if (!fields || !GvHV(*fields)) |
6137 | break; | |
6138 | svp = &((SVOP*)((BINOP*)o)->op_last)->op_sv; | |
6139 | key = SvPV(*svp, keylen); | |
6140 | indsvp = hv_fetch(GvHV(*fields), key, keylen, FALSE); | |
6141 | if (!indsvp) { | |
88e9b055 | 6142 | Perl_croak(aTHX_ "No such pseudo-hash field \"%s\" in variable %s of type %s", |
2d8e6c8d | 6143 | key, SvPV(lexname, n_a), HvNAME(SvSTASH(lexname))); |
c750a3ec MB |
6144 | } |
6145 | ind = SvIV(*indsvp); | |
6146 | if (ind < 1) | |
cea2e8a9 | 6147 | Perl_croak(aTHX_ "Bad index while coercing array into hash"); |
c750a3ec | 6148 | rop->op_type = OP_RV2AV; |
22c35a8c | 6149 | rop->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
c750a3ec | 6150 | o->op_type = OP_AELEM; |
22c35a8c | 6151 | o->op_ppaddr = PL_ppaddr[OP_AELEM]; |
c750a3ec MB |
6152 | SvREFCNT_dec(*svp); |
6153 | *svp = newSViv(ind); | |
6154 | break; | |
6155 | } | |
6156 | ||
cd06dffe GS |
6157 | case OP_RV2AV: |
6158 | case OP_RV2HV: | |
6159 | if (!(o->op_flags & OPf_WANT) | |
6160 | || o->op_flags & OPf_WANT == OPf_WANT_LIST) | |
6161 | last_composite = o; | |
6162 | o->op_seq = PL_op_seqmax++; | |
6163 | break; | |
6164 | ||
6165 | case OP_RETURN: | |
6166 | if (o->op_next->op_type != OP_LEAVESUBLV) { | |
6167 | o->op_seq = PL_op_seqmax++; | |
6168 | break; | |
6169 | } | |
6170 | /* FALL THROUGH */ | |
6171 | ||
6172 | case OP_LEAVESUBLV: | |
6173 | if (last_composite) { | |
6174 | OP *r = last_composite; | |
6175 | ||
6176 | while (r->op_sibling) | |
6177 | r = r->op_sibling; | |
6178 | if (r->op_next == o | |
6179 | || (r->op_next->op_type == OP_LIST | |
6180 | && r->op_next->op_next == o)) | |
6181 | { | |
6182 | if (last_composite->op_type == OP_RV2AV) | |
6183 | yyerror("Lvalue subs returning arrays not implemented yet"); | |
6184 | else | |
6185 | yyerror("Lvalue subs returning hashes not implemented yet"); | |
6186 | ; | |
6187 | } | |
6188 | } | |
6189 | /* FALL THROUGH */ | |
6190 | ||
79072805 | 6191 | default: |
3280af22 | 6192 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
6193 | break; |
6194 | } | |
a0d0e21e | 6195 | oldop = o; |
79072805 | 6196 | } |
a0d0e21e | 6197 | LEAVE; |
79072805 | 6198 | } |