Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* op.c |
79072805 | 2 | * |
bc89e66f | 3 | * Copyright (c) 1991-2001, Larry Wall |
79072805 LW |
4 | * |
5 | * You may distribute under the terms of either the GNU General Public | |
6 | * License or the Artistic License, as specified in the README file. | |
7 | * | |
a0d0e21e LW |
8 | */ |
9 | ||
10 | /* | |
11 | * "You see: Mr. Drogo, he married poor Miss Primula Brandybuck. She was | |
12 | * our Mr. Bilbo's first cousin on the mother's side (her mother being the | |
13 | * youngest of the Old Took's daughters); and Mr. Drogo was his second | |
14 | * cousin. So Mr. Frodo is his first *and* second cousin, once removed | |
15 | * either way, as the saying is, if you follow me." --the Gaffer | |
79072805 LW |
16 | */ |
17 | ||
18 | #include "EXTERN.h" | |
864dbfa3 | 19 | #define PERL_IN_OP_C |
79072805 | 20 | #include "perl.h" |
77ca0c92 | 21 | #include "keywords.h" |
79072805 | 22 | |
b7dc083c | 23 | /* #define PL_OP_SLAB_ALLOC */ |
7934575e | 24 | |
1c846c1f | 25 | #ifdef PL_OP_SLAB_ALLOC |
b7dc083c NIS |
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 | ||
1c846c1f | 35 | STATIC void * |
cea2e8a9 | 36 | S_Slab_Alloc(pTHX_ int m, size_t sz) |
1c846c1f | 37 | { |
b7dc083c NIS |
38 | Newz(m,PL_OpPtr,SLAB_SIZE,char); |
39 | PL_OpSpace = SLAB_SIZE - sz; | |
40 | return PL_OpPtr += PL_OpSpace; | |
41 | } | |
76e3520e | 42 | |
1c846c1f | 43 | #else |
b7dc083c NIS |
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 | 57 | #define PAD_MAX 999999999 |
e6438c1a | 58 | #define RETURN_UNLIMITED_NUMBER (PERL_INT_MAX / 2) |
c53d7c7d | 59 | |
76e3520e | 60 | STATIC char* |
cea2e8a9 | 61 | S_gv_ename(pTHX_ GV *gv) |
4633a7c4 | 62 | { |
2d8e6c8d | 63 | STRLEN n_a; |
4633a7c4 | 64 | SV* tmpsv = sv_newmortal(); |
46fc3d4c | 65 | gv_efullname3(tmpsv, gv, Nullch); |
2d8e6c8d | 66 | return SvPV(tmpsv,n_a); |
4633a7c4 LW |
67 | } |
68 | ||
76e3520e | 69 | STATIC OP * |
cea2e8a9 | 70 | S_no_fh_allowed(pTHX_ OP *o) |
79072805 | 71 | { |
cea2e8a9 | 72 | yyerror(Perl_form(aTHX_ "Missing comma after first argument to %s function", |
22c35a8c | 73 | PL_op_desc[o->op_type])); |
11343788 | 74 | return o; |
79072805 LW |
75 | } |
76 | ||
76e3520e | 77 | STATIC OP * |
cea2e8a9 | 78 | S_too_few_arguments(pTHX_ OP *o, char *name) |
79072805 | 79 | { |
cea2e8a9 | 80 | yyerror(Perl_form(aTHX_ "Not enough arguments for %s", name)); |
11343788 | 81 | return o; |
79072805 LW |
82 | } |
83 | ||
76e3520e | 84 | STATIC OP * |
cea2e8a9 | 85 | S_too_many_arguments(pTHX_ OP *o, char *name) |
79072805 | 86 | { |
cea2e8a9 | 87 | yyerror(Perl_form(aTHX_ "Too many arguments for %s", name)); |
11343788 | 88 | return o; |
79072805 LW |
89 | } |
90 | ||
76e3520e | 91 | STATIC void |
cea2e8a9 | 92 | S_bad_type(pTHX_ I32 n, char *t, char *name, OP *kid) |
8990e307 | 93 | { |
cea2e8a9 | 94 | yyerror(Perl_form(aTHX_ "Type of arg %d to %s must be %s (not %s)", |
22c35a8c | 95 | (int)n, name, t, PL_op_desc[kid->op_type])); |
8990e307 LW |
96 | } |
97 | ||
7a52d87a | 98 | STATIC void |
cea2e8a9 | 99 | S_no_bareword_allowed(pTHX_ OP *o) |
7a52d87a | 100 | { |
5a844595 GS |
101 | qerror(Perl_mess(aTHX_ |
102 | "Bareword \"%s\" not allowed while \"strict subs\" in use", | |
7766f137 | 103 | SvPV_nolen(cSVOPo_sv))); |
7a52d87a GS |
104 | } |
105 | ||
79072805 LW |
106 | /* "register" allocation */ |
107 | ||
108 | PADOFFSET | |
864dbfa3 | 109 | Perl_pad_allocmy(pTHX_ char *name) |
93a17b20 | 110 | { |
a0d0e21e LW |
111 | PADOFFSET off; |
112 | SV *sv; | |
113 | ||
155aba94 GS |
114 | if (!(PL_in_my == KEY_our || |
115 | isALPHA(name[1]) || | |
fd400ab9 | 116 | (PL_hints & HINT_UTF8 && UTF8_IS_START(name[1])) || |
155aba94 | 117 | (name[1] == '_' && (int)strlen(name) > 2))) |
834a4ddd | 118 | { |
c4d0567e | 119 | if (!isPRINT(name[1]) || strchr("\t\n\r\f", name[1])) { |
2b92dfce GS |
120 | /* 1999-02-27 mjd@plover.com */ |
121 | char *p; | |
122 | p = strchr(name, '\0'); | |
123 | /* The next block assumes the buffer is at least 205 chars | |
124 | long. At present, it's always at least 256 chars. */ | |
125 | if (p-name > 200) { | |
126 | strcpy(name+200, "..."); | |
127 | p = name+199; | |
128 | } | |
129 | else { | |
130 | p[1] = '\0'; | |
131 | } | |
132 | /* Move everything else down one character */ | |
133 | for (; p-name > 2; p--) | |
134 | *p = *(p-1); | |
46fc3d4c | 135 | name[2] = toCTRL(name[1]); |
136 | name[1] = '^'; | |
137 | } | |
cea2e8a9 | 138 | yyerror(Perl_form(aTHX_ "Can't use global %s in \"my\"",name)); |
a0d0e21e | 139 | } |
e476b1b5 | 140 | if (ckWARN(WARN_MISC) && AvFILLp(PL_comppad_name) >= 0) { |
3280af22 | 141 | SV **svp = AvARRAY(PL_comppad_name); |
33633739 GS |
142 | HV *ourstash = (PL_curstash ? PL_curstash : PL_defstash); |
143 | PADOFFSET top = AvFILLp(PL_comppad_name); | |
144 | for (off = top; off > PL_comppad_name_floor; off--) { | |
b1cb66bf | 145 | if ((sv = svp[off]) |
3280af22 | 146 | && sv != &PL_sv_undef |
c53d7c7d | 147 | && (SvIVX(sv) == PAD_MAX || SvIVX(sv) == 0) |
33633739 GS |
148 | && (PL_in_my != KEY_our |
149 | || ((SvFLAGS(sv) & SVpad_OUR) && GvSTASH(sv) == ourstash)) | |
b1cb66bf | 150 | && strEQ(name, SvPVX(sv))) |
151 | { | |
e476b1b5 | 152 | Perl_warner(aTHX_ WARN_MISC, |
1c846c1f | 153 | "\"%s\" variable %s masks earlier declaration in same %s", |
33633739 GS |
154 | (PL_in_my == KEY_our ? "our" : "my"), |
155 | name, | |
156 | (SvIVX(sv) == PAD_MAX ? "scope" : "statement")); | |
157 | --off; | |
158 | break; | |
159 | } | |
160 | } | |
161 | if (PL_in_my == KEY_our) { | |
635bab04 | 162 | do { |
33633739 GS |
163 | if ((sv = svp[off]) |
164 | && sv != &PL_sv_undef | |
5ce0178e | 165 | && (SvIVX(sv) == PAD_MAX || SvIVX(sv) == 0) |
33633739 GS |
166 | && ((SvFLAGS(sv) & SVpad_OUR) && GvSTASH(sv) == ourstash) |
167 | && strEQ(name, SvPVX(sv))) | |
f472eb5c | 168 | { |
e476b1b5 | 169 | Perl_warner(aTHX_ WARN_MISC, |
33633739 | 170 | "\"our\" variable %s redeclared", name); |
e476b1b5 | 171 | Perl_warner(aTHX_ WARN_MISC, |
cc507455 | 172 | "\t(Did you mean \"local\" instead of \"our\"?)\n"); |
33633739 | 173 | break; |
f472eb5c | 174 | } |
635bab04 | 175 | } while ( off-- > 0 ); |
b1cb66bf | 176 | } |
177 | } | |
a0d0e21e LW |
178 | off = pad_alloc(OP_PADSV, SVs_PADMY); |
179 | sv = NEWSV(1102,0); | |
93a17b20 LW |
180 | sv_upgrade(sv, SVt_PVNV); |
181 | sv_setpv(sv, name); | |
3280af22 | 182 | if (PL_in_my_stash) { |
c750a3ec | 183 | if (*name != '$') |
eb64745e GS |
184 | yyerror(Perl_form(aTHX_ "Can't declare class for non-scalar %s in \"%s\"", |
185 | name, PL_in_my == KEY_our ? "our" : "my")); | |
c750a3ec MB |
186 | SvOBJECT_on(sv); |
187 | (void)SvUPGRADE(sv, SVt_PVMG); | |
3280af22 NIS |
188 | SvSTASH(sv) = (HV*)SvREFCNT_inc(PL_in_my_stash); |
189 | PL_sv_objcount++; | |
c750a3ec | 190 | } |
f472eb5c GS |
191 | if (PL_in_my == KEY_our) { |
192 | (void)SvUPGRADE(sv, SVt_PVGV); | |
ef75a179 | 193 | GvSTASH(sv) = (HV*)SvREFCNT_inc(PL_curstash ? (SV*)PL_curstash : (SV*)PL_defstash); |
77ca0c92 | 194 | SvFLAGS(sv) |= SVpad_OUR; |
f472eb5c | 195 | } |
3280af22 | 196 | av_store(PL_comppad_name, off, sv); |
65202027 | 197 | SvNVX(sv) = (NV)PAD_MAX; |
8990e307 | 198 | SvIVX(sv) = 0; /* Not yet introduced--see newSTATEOP */ |
3280af22 NIS |
199 | if (!PL_min_intro_pending) |
200 | PL_min_intro_pending = off; | |
201 | PL_max_intro_pending = off; | |
93a17b20 | 202 | if (*name == '@') |
3280af22 | 203 | av_store(PL_comppad, off, (SV*)newAV()); |
93a17b20 | 204 | else if (*name == '%') |
3280af22 NIS |
205 | av_store(PL_comppad, off, (SV*)newHV()); |
206 | SvPADMY_on(PL_curpad[off]); | |
93a17b20 LW |
207 | return off; |
208 | } | |
209 | ||
94f23f41 GS |
210 | STATIC PADOFFSET |
211 | S_pad_addlex(pTHX_ SV *proto_namesv) | |
212 | { | |
213 | SV *namesv = NEWSV(1103,0); | |
214 | PADOFFSET newoff = pad_alloc(OP_PADSV, SVs_PADMY); | |
215 | sv_upgrade(namesv, SVt_PVNV); | |
216 | sv_setpv(namesv, SvPVX(proto_namesv)); | |
217 | av_store(PL_comppad_name, newoff, namesv); | |
218 | SvNVX(namesv) = (NV)PL_curcop->cop_seq; | |
219 | SvIVX(namesv) = PAD_MAX; /* A ref, intro immediately */ | |
220 | SvFAKE_on(namesv); /* A ref, not a real var */ | |
221 | if (SvFLAGS(proto_namesv) & SVpad_OUR) { /* An "our" variable */ | |
222 | SvFLAGS(namesv) |= SVpad_OUR; | |
223 | (void)SvUPGRADE(namesv, SVt_PVGV); | |
224 | GvSTASH(namesv) = (HV*)SvREFCNT_inc((SV*)GvSTASH(proto_namesv)); | |
225 | } | |
226 | if (SvOBJECT(proto_namesv)) { /* A typed var */ | |
227 | SvOBJECT_on(namesv); | |
228 | (void)SvUPGRADE(namesv, SVt_PVMG); | |
229 | SvSTASH(namesv) = (HV*)SvREFCNT_inc((SV*)SvSTASH(proto_namesv)); | |
230 | PL_sv_objcount++; | |
231 | } | |
232 | return newoff; | |
233 | } | |
234 | ||
2680586e GS |
235 | #define FINDLEX_NOSEARCH 1 /* don't search outer contexts */ |
236 | ||
76e3520e | 237 | STATIC PADOFFSET |
cea2e8a9 | 238 | S_pad_findlex(pTHX_ char *name, PADOFFSET newoff, U32 seq, CV* startcv, |
864dbfa3 | 239 | I32 cx_ix, I32 saweval, U32 flags) |
93a17b20 | 240 | { |
748a9306 | 241 | CV *cv; |
93a17b20 LW |
242 | I32 off; |
243 | SV *sv; | |
93a17b20 | 244 | register I32 i; |
c09156bb | 245 | register PERL_CONTEXT *cx; |
93a17b20 | 246 | |
748a9306 | 247 | for (cv = startcv; cv; cv = CvOUTSIDE(cv)) { |
4fdae800 | 248 | AV *curlist = CvPADLIST(cv); |
249 | SV **svp = av_fetch(curlist, 0, FALSE); | |
748a9306 | 250 | AV *curname; |
4fdae800 | 251 | |
3280af22 | 252 | if (!svp || *svp == &PL_sv_undef) |
4633a7c4 | 253 | continue; |
748a9306 LW |
254 | curname = (AV*)*svp; |
255 | svp = AvARRAY(curname); | |
93965878 | 256 | for (off = AvFILLp(curname); off > 0; off--) { |
748a9306 | 257 | if ((sv = svp[off]) && |
3280af22 | 258 | sv != &PL_sv_undef && |
748a9306 | 259 | seq <= SvIVX(sv) && |
13826f2c | 260 | seq > I_32(SvNVX(sv)) && |
748a9306 LW |
261 | strEQ(SvPVX(sv), name)) |
262 | { | |
5f05dabc | 263 | I32 depth; |
264 | AV *oldpad; | |
265 | SV *oldsv; | |
266 | ||
267 | depth = CvDEPTH(cv); | |
268 | if (!depth) { | |
9607fc9c | 269 | if (newoff) { |
270 | if (SvFAKE(sv)) | |
271 | continue; | |
4fdae800 | 272 | return 0; /* don't clone from inactive stack frame */ |
9607fc9c | 273 | } |
5f05dabc | 274 | depth = 1; |
275 | } | |
94f23f41 | 276 | oldpad = (AV*)AvARRAY(curlist)[depth]; |
5f05dabc | 277 | oldsv = *av_fetch(oldpad, off, TRUE); |
748a9306 | 278 | if (!newoff) { /* Not a mere clone operation. */ |
94f23f41 | 279 | newoff = pad_addlex(sv); |
3280af22 | 280 | if (CvANON(PL_compcv) || SvTYPE(PL_compcv) == SVt_PVFM) { |
28757baa | 281 | /* "It's closures all the way down." */ |
3280af22 | 282 | CvCLONE_on(PL_compcv); |
54310121 | 283 | if (cv == startcv) { |
3280af22 | 284 | if (CvANON(PL_compcv)) |
54310121 | 285 | oldsv = Nullsv; /* no need to keep ref */ |
286 | } | |
287 | else { | |
28757baa | 288 | CV *bcv; |
289 | for (bcv = startcv; | |
290 | bcv && bcv != cv && !CvCLONE(bcv); | |
6b35e009 GS |
291 | bcv = CvOUTSIDE(bcv)) |
292 | { | |
94f23f41 GS |
293 | if (CvANON(bcv)) { |
294 | /* install the missing pad entry in intervening | |
295 | * nested subs and mark them cloneable. | |
296 | * XXX fix pad_foo() to not use globals */ | |
297 | AV *ocomppad_name = PL_comppad_name; | |
298 | AV *ocomppad = PL_comppad; | |
299 | SV **ocurpad = PL_curpad; | |
300 | AV *padlist = CvPADLIST(bcv); | |
301 | PL_comppad_name = (AV*)AvARRAY(padlist)[0]; | |
302 | PL_comppad = (AV*)AvARRAY(padlist)[1]; | |
303 | PL_curpad = AvARRAY(PL_comppad); | |
304 | pad_addlex(sv); | |
305 | PL_comppad_name = ocomppad_name; | |
306 | PL_comppad = ocomppad; | |
307 | PL_curpad = ocurpad; | |
28757baa | 308 | CvCLONE_on(bcv); |
94f23f41 | 309 | } |
28757baa | 310 | else { |
6b35e009 GS |
311 | if (ckWARN(WARN_CLOSURE) |
312 | && !CvUNIQUE(bcv) && !CvUNIQUE(cv)) | |
313 | { | |
cea2e8a9 | 314 | Perl_warner(aTHX_ WARN_CLOSURE, |
44a8e56a | 315 | "Variable \"%s\" may be unavailable", |
28757baa | 316 | name); |
6b35e009 | 317 | } |
28757baa | 318 | break; |
319 | } | |
320 | } | |
321 | } | |
322 | } | |
3280af22 | 323 | else if (!CvUNIQUE(PL_compcv)) { |
741b6338 GS |
324 | if (ckWARN(WARN_CLOSURE) && !SvFAKE(sv) && !CvUNIQUE(cv) |
325 | && !(SvFLAGS(sv) & SVpad_OUR)) | |
326 | { | |
cea2e8a9 | 327 | Perl_warner(aTHX_ WARN_CLOSURE, |
599cee73 | 328 | "Variable \"%s\" will not stay shared", name); |
741b6338 | 329 | } |
5f05dabc | 330 | } |
748a9306 | 331 | } |
3280af22 | 332 | av_store(PL_comppad, newoff, SvREFCNT_inc(oldsv)); |
748a9306 LW |
333 | return newoff; |
334 | } | |
93a17b20 LW |
335 | } |
336 | } | |
337 | ||
2680586e GS |
338 | if (flags & FINDLEX_NOSEARCH) |
339 | return 0; | |
340 | ||
93a17b20 LW |
341 | /* Nothing in current lexical context--try eval's context, if any. |
342 | * This is necessary to let the perldb get at lexically scoped variables. | |
343 | * XXX This will also probably interact badly with eval tree caching. | |
344 | */ | |
345 | ||
748a9306 | 346 | for (i = cx_ix; i >= 0; i--) { |
93a17b20 | 347 | cx = &cxstack[i]; |
6b35e009 | 348 | switch (CxTYPE(cx)) { |
93a17b20 | 349 | default: |
748a9306 LW |
350 | if (i == 0 && saweval) { |
351 | seq = cxstack[saweval].blk_oldcop->cop_seq; | |
2680586e | 352 | return pad_findlex(name, newoff, seq, PL_main_cv, -1, saweval, 0); |
748a9306 | 353 | } |
93a17b20 LW |
354 | break; |
355 | case CXt_EVAL: | |
44a8e56a | 356 | switch (cx->blk_eval.old_op_type) { |
357 | case OP_ENTEREVAL: | |
6b35e009 GS |
358 | if (CxREALEVAL(cx)) |
359 | saweval = i; | |
44a8e56a | 360 | break; |
faa7e5bb | 361 | case OP_DOFILE: |
44a8e56a | 362 | case OP_REQUIRE: |
faa7e5bb | 363 | /* require/do must have their own scope */ |
44a8e56a | 364 | return 0; |
365 | } | |
93a17b20 | 366 | break; |
7766f137 | 367 | case CXt_FORMAT: |
93a17b20 LW |
368 | case CXt_SUB: |
369 | if (!saweval) | |
370 | return 0; | |
371 | cv = cx->blk_sub.cv; | |
3280af22 | 372 | if (PL_debstash && CvSTASH(cv) == PL_debstash) { /* ignore DB'* scope */ |
748a9306 | 373 | saweval = i; /* so we know where we were called from */ |
93a17b20 | 374 | continue; |
93a17b20 | 375 | } |
748a9306 | 376 | seq = cxstack[saweval].blk_oldcop->cop_seq; |
2680586e | 377 | return pad_findlex(name, newoff, seq, cv, i-1, saweval,FINDLEX_NOSEARCH); |
93a17b20 LW |
378 | } |
379 | } | |
380 | ||
748a9306 LW |
381 | return 0; |
382 | } | |
a0d0e21e | 383 | |
748a9306 | 384 | PADOFFSET |
864dbfa3 | 385 | Perl_pad_findmy(pTHX_ char *name) |
748a9306 LW |
386 | { |
387 | I32 off; | |
54310121 | 388 | I32 pendoff = 0; |
748a9306 | 389 | SV *sv; |
3280af22 NIS |
390 | SV **svp = AvARRAY(PL_comppad_name); |
391 | U32 seq = PL_cop_seqmax; | |
6b35e009 | 392 | PERL_CONTEXT *cx; |
33b8ce05 | 393 | CV *outside; |
748a9306 | 394 | |
11343788 MB |
395 | #ifdef USE_THREADS |
396 | /* | |
397 | * Special case to get lexical (and hence per-thread) @_. | |
398 | * XXX I need to find out how to tell at parse-time whether use | |
399 | * of @_ should refer to a lexical (from a sub) or defgv (global | |
400 | * scope and maybe weird sub-ish things like formats). See | |
401 | * startsub in perly.y. It's possible that @_ could be lexical | |
402 | * (at least from subs) even in non-threaded perl. | |
403 | */ | |
404 | if (strEQ(name, "@_")) | |
405 | return 0; /* success. (NOT_IN_PAD indicates failure) */ | |
406 | #endif /* USE_THREADS */ | |
407 | ||
748a9306 | 408 | /* The one we're looking for is probably just before comppad_name_fill. */ |
3280af22 | 409 | for (off = AvFILLp(PL_comppad_name); off > 0; off--) { |
a0d0e21e | 410 | if ((sv = svp[off]) && |
3280af22 | 411 | sv != &PL_sv_undef && |
54310121 | 412 | (!SvIVX(sv) || |
413 | (seq <= SvIVX(sv) && | |
414 | seq > I_32(SvNVX(sv)))) && | |
a0d0e21e LW |
415 | strEQ(SvPVX(sv), name)) |
416 | { | |
77ca0c92 | 417 | if (SvIVX(sv) || SvFLAGS(sv) & SVpad_OUR) |
54310121 | 418 | return (PADOFFSET)off; |
419 | pendoff = off; /* this pending def. will override import */ | |
a0d0e21e LW |
420 | } |
421 | } | |
748a9306 | 422 | |
33b8ce05 GS |
423 | outside = CvOUTSIDE(PL_compcv); |
424 | ||
425 | /* Check if if we're compiling an eval'', and adjust seq to be the | |
426 | * eval's seq number. This depends on eval'' having a non-null | |
427 | * CvOUTSIDE() while it is being compiled. The eval'' itself is | |
1aff0e91 GS |
428 | * identified by CvEVAL being true and CvGV being null. */ |
429 | if (outside && CvEVAL(PL_compcv) && !CvGV(PL_compcv) && cxstack_ix >= 0) { | |
6b35e009 GS |
430 | cx = &cxstack[cxstack_ix]; |
431 | if (CxREALEVAL(cx)) | |
432 | seq = cx->blk_oldcop->cop_seq; | |
433 | } | |
434 | ||
748a9306 | 435 | /* See if it's in a nested scope */ |
2680586e | 436 | off = pad_findlex(name, 0, seq, outside, cxstack_ix, 0, 0); |
54310121 | 437 | if (off) { |
438 | /* If there is a pending local definition, this new alias must die */ | |
439 | if (pendoff) | |
3280af22 | 440 | SvIVX(AvARRAY(PL_comppad_name)[off]) = seq; |
11343788 | 441 | return off; /* pad_findlex returns 0 for failure...*/ |
54310121 | 442 | } |
11343788 | 443 | return NOT_IN_PAD; /* ...but we return NOT_IN_PAD for failure */ |
93a17b20 LW |
444 | } |
445 | ||
446 | void | |
864dbfa3 | 447 | Perl_pad_leavemy(pTHX_ I32 fill) |
93a17b20 LW |
448 | { |
449 | I32 off; | |
3280af22 | 450 | SV **svp = AvARRAY(PL_comppad_name); |
93a17b20 | 451 | SV *sv; |
3280af22 NIS |
452 | if (PL_min_intro_pending && fill < PL_min_intro_pending) { |
453 | for (off = PL_max_intro_pending; off >= PL_min_intro_pending; off--) { | |
0453d815 PM |
454 | if ((sv = svp[off]) && sv != &PL_sv_undef && ckWARN_d(WARN_INTERNAL)) |
455 | Perl_warner(aTHX_ WARN_INTERNAL, "%s never introduced", SvPVX(sv)); | |
8990e307 LW |
456 | } |
457 | } | |
458 | /* "Deintroduce" my variables that are leaving with this scope. */ | |
3280af22 | 459 | for (off = AvFILLp(PL_comppad_name); off > fill; off--) { |
c53d7c7d | 460 | if ((sv = svp[off]) && sv != &PL_sv_undef && SvIVX(sv) == PAD_MAX) |
3280af22 | 461 | SvIVX(sv) = PL_cop_seqmax; |
93a17b20 LW |
462 | } |
463 | } | |
464 | ||
465 | PADOFFSET | |
864dbfa3 | 466 | Perl_pad_alloc(pTHX_ I32 optype, U32 tmptype) |
79072805 LW |
467 | { |
468 | SV *sv; | |
469 | I32 retval; | |
470 | ||
3280af22 | 471 | if (AvARRAY(PL_comppad) != PL_curpad) |
cea2e8a9 | 472 | Perl_croak(aTHX_ "panic: pad_alloc"); |
3280af22 | 473 | if (PL_pad_reset_pending) |
a0d0e21e | 474 | pad_reset(); |
ed6116ce | 475 | if (tmptype & SVs_PADMY) { |
79072805 | 476 | do { |
3280af22 | 477 | sv = *av_fetch(PL_comppad, AvFILLp(PL_comppad) + 1, TRUE); |
ed6116ce | 478 | } while (SvPADBUSY(sv)); /* need a fresh one */ |
3280af22 | 479 | retval = AvFILLp(PL_comppad); |
79072805 LW |
480 | } |
481 | else { | |
3280af22 NIS |
482 | SV **names = AvARRAY(PL_comppad_name); |
483 | SSize_t names_fill = AvFILLp(PL_comppad_name); | |
bbce6d69 | 484 | for (;;) { |
485 | /* | |
486 | * "foreach" index vars temporarily become aliases to non-"my" | |
487 | * values. Thus we must skip, not just pad values that are | |
488 | * marked as current pad values, but also those with names. | |
489 | */ | |
3280af22 NIS |
490 | if (++PL_padix <= names_fill && |
491 | (sv = names[PL_padix]) && sv != &PL_sv_undef) | |
bbce6d69 | 492 | continue; |
3280af22 | 493 | sv = *av_fetch(PL_comppad, PL_padix, TRUE); |
3049cdab SB |
494 | if (!(SvFLAGS(sv) & (SVs_PADTMP|SVs_PADMY)) && |
495 | !IS_PADGV(sv) && !IS_PADCONST(sv)) | |
bbce6d69 | 496 | break; |
497 | } | |
3280af22 | 498 | retval = PL_padix; |
79072805 | 499 | } |
8990e307 | 500 | SvFLAGS(sv) |= tmptype; |
3280af22 | 501 | PL_curpad = AvARRAY(PL_comppad); |
11343788 | 502 | #ifdef USE_THREADS |
b900a521 JH |
503 | DEBUG_X(PerlIO_printf(Perl_debug_log, |
504 | "0x%"UVxf" Pad 0x%"UVxf" alloc %ld for %s\n", | |
505 | PTR2UV(thr), PTR2UV(PL_curpad), | |
22c35a8c | 506 | (long) retval, PL_op_name[optype])); |
11343788 | 507 | #else |
b900a521 JH |
508 | DEBUG_X(PerlIO_printf(Perl_debug_log, |
509 | "Pad 0x%"UVxf" alloc %ld for %s\n", | |
510 | PTR2UV(PL_curpad), | |
22c35a8c | 511 | (long) retval, PL_op_name[optype])); |
11343788 | 512 | #endif /* USE_THREADS */ |
79072805 LW |
513 | return (PADOFFSET)retval; |
514 | } | |
515 | ||
516 | SV * | |
864dbfa3 | 517 | Perl_pad_sv(pTHX_ PADOFFSET po) |
79072805 | 518 | { |
11343788 | 519 | #ifdef USE_THREADS |
b900a521 | 520 | DEBUG_X(PerlIO_printf(Perl_debug_log, |
f1dbda3d JH |
521 | "0x%"UVxf" Pad 0x%"UVxf" sv %"IVdf"\n", |
522 | PTR2UV(thr), PTR2UV(PL_curpad), (IV)po)); | |
11343788 | 523 | #else |
79072805 | 524 | if (!po) |
cea2e8a9 | 525 | Perl_croak(aTHX_ "panic: pad_sv po"); |
97835f67 JH |
526 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%"UVxf" sv %"IVdf"\n", |
527 | PTR2UV(PL_curpad), (IV)po)); | |
11343788 | 528 | #endif /* USE_THREADS */ |
3280af22 | 529 | return PL_curpad[po]; /* eventually we'll turn this into a macro */ |
79072805 LW |
530 | } |
531 | ||
532 | void | |
864dbfa3 | 533 | Perl_pad_free(pTHX_ PADOFFSET po) |
79072805 | 534 | { |
3280af22 | 535 | if (!PL_curpad) |
a0d0e21e | 536 | return; |
3280af22 | 537 | if (AvARRAY(PL_comppad) != PL_curpad) |
cea2e8a9 | 538 | Perl_croak(aTHX_ "panic: pad_free curpad"); |
79072805 | 539 | if (!po) |
cea2e8a9 | 540 | Perl_croak(aTHX_ "panic: pad_free po"); |
11343788 | 541 | #ifdef USE_THREADS |
b900a521 | 542 | DEBUG_X(PerlIO_printf(Perl_debug_log, |
7766f137 | 543 | "0x%"UVxf" Pad 0x%"UVxf" free %"IVdf"\n", |
f1dbda3d | 544 | PTR2UV(thr), PTR2UV(PL_curpad), (IV)po)); |
11343788 | 545 | #else |
97835f67 JH |
546 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%"UVxf" free %"IVdf"\n", |
547 | PTR2UV(PL_curpad), (IV)po)); | |
11343788 | 548 | #endif /* USE_THREADS */ |
2aa1bedc | 549 | if (PL_curpad[po] && PL_curpad[po] != &PL_sv_undef) { |
3280af22 | 550 | SvPADTMP_off(PL_curpad[po]); |
2aa1bedc GS |
551 | #ifdef USE_ITHREADS |
552 | SvREADONLY_off(PL_curpad[po]); /* could be a freed constant */ | |
553 | #endif | |
554 | } | |
3280af22 NIS |
555 | if ((I32)po < PL_padix) |
556 | PL_padix = po - 1; | |
79072805 LW |
557 | } |
558 | ||
559 | void | |
864dbfa3 | 560 | Perl_pad_swipe(pTHX_ PADOFFSET po) |
79072805 | 561 | { |
3280af22 | 562 | if (AvARRAY(PL_comppad) != PL_curpad) |
cea2e8a9 | 563 | Perl_croak(aTHX_ "panic: pad_swipe curpad"); |
79072805 | 564 | if (!po) |
cea2e8a9 | 565 | Perl_croak(aTHX_ "panic: pad_swipe po"); |
11343788 | 566 | #ifdef USE_THREADS |
b900a521 | 567 | DEBUG_X(PerlIO_printf(Perl_debug_log, |
f1dbda3d JH |
568 | "0x%"UVxf" Pad 0x%"UVxf" swipe %"IVdf"\n", |
569 | PTR2UV(thr), PTR2UV(PL_curpad), (IV)po)); | |
11343788 | 570 | #else |
97835f67 JH |
571 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%"UVxf" swipe %"IVdf"\n", |
572 | PTR2UV(PL_curpad), (IV)po)); | |
11343788 | 573 | #endif /* USE_THREADS */ |
3280af22 NIS |
574 | SvPADTMP_off(PL_curpad[po]); |
575 | PL_curpad[po] = NEWSV(1107,0); | |
576 | SvPADTMP_on(PL_curpad[po]); | |
577 | if ((I32)po < PL_padix) | |
578 | PL_padix = po - 1; | |
79072805 LW |
579 | } |
580 | ||
d9bb4600 GS |
581 | /* XXX pad_reset() is currently disabled because it results in serious bugs. |
582 | * It causes pad temp TARGs to be shared between OPs. Since TARGs are pushed | |
583 | * on the stack by OPs that use them, there are several ways to get an alias | |
584 | * to a shared TARG. Such an alias will change randomly and unpredictably. | |
585 | * We avoid doing this until we can think of a Better Way. | |
586 | * GSAR 97-10-29 */ | |
79072805 | 587 | void |
864dbfa3 | 588 | Perl_pad_reset(pTHX) |
79072805 | 589 | { |
d9bb4600 | 590 | #ifdef USE_BROKEN_PAD_RESET |
79072805 LW |
591 | register I32 po; |
592 | ||
6b88bc9c | 593 | if (AvARRAY(PL_comppad) != PL_curpad) |
cea2e8a9 | 594 | Perl_croak(aTHX_ "panic: pad_reset curpad"); |
11343788 | 595 | #ifdef USE_THREADS |
b900a521 JH |
596 | DEBUG_X(PerlIO_printf(Perl_debug_log, |
597 | "0x%"UVxf" Pad 0x%"UVxf" reset\n", | |
598 | PTR2UV(thr), PTR2UV(PL_curpad))); | |
11343788 | 599 | #else |
b900a521 JH |
600 | DEBUG_X(PerlIO_printf(Perl_debug_log, "Pad 0x%"UVxf" reset\n", |
601 | PTR2UV(PL_curpad))); | |
11343788 | 602 | #endif /* USE_THREADS */ |
6b88bc9c GS |
603 | if (!PL_tainting) { /* Can't mix tainted and non-tainted temporaries. */ |
604 | for (po = AvMAX(PL_comppad); po > PL_padix_floor; po--) { | |
605 | if (PL_curpad[po] && !SvIMMORTAL(PL_curpad[po])) | |
606 | SvPADTMP_off(PL_curpad[po]); | |
748a9306 | 607 | } |
6b88bc9c | 608 | PL_padix = PL_padix_floor; |
79072805 | 609 | } |
d9bb4600 | 610 | #endif |
3280af22 | 611 | PL_pad_reset_pending = FALSE; |
79072805 LW |
612 | } |
613 | ||
a863c7d1 | 614 | #ifdef USE_THREADS |
54b9620d | 615 | /* find_threadsv is not reentrant */ |
a863c7d1 | 616 | PADOFFSET |
864dbfa3 | 617 | Perl_find_threadsv(pTHX_ const char *name) |
a863c7d1 | 618 | { |
a863c7d1 MB |
619 | char *p; |
620 | PADOFFSET key; | |
554b3eca | 621 | SV **svp; |
54b9620d | 622 | /* We currently only handle names of a single character */ |
533c011a | 623 | p = strchr(PL_threadsv_names, *name); |
a863c7d1 MB |
624 | if (!p) |
625 | return NOT_IN_PAD; | |
533c011a | 626 | key = p - PL_threadsv_names; |
2d8e6c8d | 627 | MUTEX_LOCK(&thr->mutex); |
54b9620d | 628 | svp = av_fetch(thr->threadsv, key, FALSE); |
2d8e6c8d GS |
629 | if (svp) |
630 | MUTEX_UNLOCK(&thr->mutex); | |
631 | else { | |
554b3eca | 632 | SV *sv = NEWSV(0, 0); |
54b9620d | 633 | av_store(thr->threadsv, key, sv); |
940cb80d | 634 | thr->threadsvp = AvARRAY(thr->threadsv); |
2d8e6c8d | 635 | MUTEX_UNLOCK(&thr->mutex); |
554b3eca MB |
636 | /* |
637 | * Some magic variables used to be automagically initialised | |
638 | * in gv_fetchpv. Those which are now per-thread magicals get | |
639 | * initialised here instead. | |
640 | */ | |
641 | switch (*name) { | |
54b9620d MB |
642 | case '_': |
643 | break; | |
554b3eca MB |
644 | case ';': |
645 | sv_setpv(sv, "\034"); | |
1c846c1f | 646 | sv_magic(sv, 0, 0, name, 1); |
554b3eca | 647 | break; |
c277df42 IZ |
648 | case '&': |
649 | case '`': | |
650 | case '\'': | |
533c011a | 651 | PL_sawampersand = TRUE; |
a3f914c5 GS |
652 | /* FALL THROUGH */ |
653 | case '1': | |
654 | case '2': | |
655 | case '3': | |
656 | case '4': | |
657 | case '5': | |
658 | case '6': | |
659 | case '7': | |
660 | case '8': | |
661 | case '9': | |
c277df42 | 662 | SvREADONLY_on(sv); |
d8b5173a | 663 | /* FALL THROUGH */ |
067391ea GS |
664 | |
665 | /* XXX %! tied to Errno.pm needs to be added here. | |
666 | * See gv_fetchpv(). */ | |
667 | /* case '!': */ | |
668 | ||
54b9620d | 669 | default: |
1c846c1f | 670 | sv_magic(sv, 0, 0, name, 1); |
554b3eca | 671 | } |
bf49b057 | 672 | DEBUG_S(PerlIO_printf(Perl_error_log, |
54b9620d | 673 | "find_threadsv: new SV %p for $%s%c\n", |
554b3eca MB |
674 | sv, (*name < 32) ? "^" : "", |
675 | (*name < 32) ? toCTRL(*name) : *name)); | |
a863c7d1 MB |
676 | } |
677 | return key; | |
678 | } | |
679 | #endif /* USE_THREADS */ | |
680 | ||
79072805 LW |
681 | /* Destructor */ |
682 | ||
683 | void | |
864dbfa3 | 684 | Perl_op_free(pTHX_ OP *o) |
79072805 | 685 | { |
85e6fe83 | 686 | register OP *kid, *nextkid; |
acb36ea4 | 687 | OPCODE type; |
79072805 | 688 | |
5dc0d613 | 689 | if (!o || o->op_seq == (U16)-1) |
79072805 LW |
690 | return; |
691 | ||
7934575e GS |
692 | if (o->op_private & OPpREFCOUNTED) { |
693 | switch (o->op_type) { | |
694 | case OP_LEAVESUB: | |
695 | case OP_LEAVESUBLV: | |
696 | case OP_LEAVEEVAL: | |
697 | case OP_LEAVE: | |
698 | case OP_SCOPE: | |
699 | case OP_LEAVEWRITE: | |
700 | OP_REFCNT_LOCK; | |
701 | if (OpREFCNT_dec(o)) { | |
702 | OP_REFCNT_UNLOCK; | |
703 | return; | |
704 | } | |
705 | OP_REFCNT_UNLOCK; | |
706 | break; | |
707 | default: | |
708 | break; | |
709 | } | |
710 | } | |
711 | ||
11343788 MB |
712 | if (o->op_flags & OPf_KIDS) { |
713 | for (kid = cUNOPo->op_first; kid; kid = nextkid) { | |
85e6fe83 | 714 | nextkid = kid->op_sibling; /* Get before next freeing kid */ |
79072805 | 715 | op_free(kid); |
85e6fe83 | 716 | } |
79072805 | 717 | } |
acb36ea4 GS |
718 | type = o->op_type; |
719 | if (type == OP_NULL) | |
720 | type = o->op_targ; | |
721 | ||
722 | /* COP* is not cleared by op_clear() so that we may track line | |
723 | * numbers etc even after null() */ | |
724 | if (type == OP_NEXTSTATE || type == OP_SETSTATE || type == OP_DBSTATE) | |
725 | cop_free((COP*)o); | |
726 | ||
727 | op_clear(o); | |
728 | ||
729 | #ifdef PL_OP_SLAB_ALLOC | |
730 | if ((char *) o == PL_OpPtr) | |
731 | { | |
732 | } | |
733 | #else | |
734 | Safefree(o); | |
735 | #endif | |
736 | } | |
79072805 | 737 | |
acb36ea4 GS |
738 | STATIC void |
739 | S_op_clear(pTHX_ OP *o) | |
740 | { | |
11343788 | 741 | switch (o->op_type) { |
acb36ea4 GS |
742 | case OP_NULL: /* Was holding old type, if any. */ |
743 | case OP_ENTEREVAL: /* Was holding hints. */ | |
744 | #ifdef USE_THREADS | |
745 | case OP_THREADSV: /* Was holding index into thr->threadsv AV. */ | |
746 | #endif | |
747 | o->op_targ = 0; | |
a0d0e21e | 748 | break; |
554b3eca | 749 | #ifdef USE_THREADS |
8dd3ba40 SM |
750 | case OP_ENTERITER: |
751 | if (!(o->op_flags & OPf_SPECIAL)) | |
752 | break; | |
753 | /* FALL THROUGH */ | |
554b3eca | 754 | #endif /* USE_THREADS */ |
a6006777 | 755 | default: |
ac4c12e7 | 756 | if (!(o->op_flags & OPf_REF) |
0b94c7bb | 757 | || (PL_check[o->op_type] != MEMBER_TO_FPTR(Perl_ck_ftst))) |
a6006777 | 758 | break; |
759 | /* FALL THROUGH */ | |
463ee0b2 | 760 | case OP_GVSV: |
79072805 | 761 | case OP_GV: |
a6006777 | 762 | case OP_AELEMFAST: |
350de78d | 763 | #ifdef USE_ITHREADS |
971a9dd3 GS |
764 | if (cPADOPo->op_padix > 0) { |
765 | if (PL_curpad) { | |
638eceb6 | 766 | GV *gv = cGVOPo_gv; |
971a9dd3 GS |
767 | pad_swipe(cPADOPo->op_padix); |
768 | /* No GvIN_PAD_off(gv) here, because other references may still | |
769 | * exist on the pad */ | |
770 | SvREFCNT_dec(gv); | |
771 | } | |
772 | cPADOPo->op_padix = 0; | |
773 | } | |
350de78d | 774 | #else |
971a9dd3 | 775 | SvREFCNT_dec(cSVOPo->op_sv); |
7934575e | 776 | cSVOPo->op_sv = Nullsv; |
350de78d | 777 | #endif |
79072805 | 778 | break; |
a1ae71d2 | 779 | case OP_METHOD_NAMED: |
79072805 | 780 | case OP_CONST: |
11343788 | 781 | SvREFCNT_dec(cSVOPo->op_sv); |
acb36ea4 | 782 | cSVOPo->op_sv = Nullsv; |
79072805 | 783 | break; |
748a9306 LW |
784 | case OP_GOTO: |
785 | case OP_NEXT: | |
786 | case OP_LAST: | |
787 | case OP_REDO: | |
11343788 | 788 | if (o->op_flags & (OPf_SPECIAL|OPf_STACKED|OPf_KIDS)) |
748a9306 LW |
789 | break; |
790 | /* FALL THROUGH */ | |
a0d0e21e | 791 | case OP_TRANS: |
acb36ea4 | 792 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { |
a0ed51b3 | 793 | SvREFCNT_dec(cSVOPo->op_sv); |
acb36ea4 GS |
794 | cSVOPo->op_sv = Nullsv; |
795 | } | |
796 | else { | |
a0ed51b3 | 797 | Safefree(cPVOPo->op_pv); |
acb36ea4 GS |
798 | cPVOPo->op_pv = Nullch; |
799 | } | |
a0d0e21e LW |
800 | break; |
801 | case OP_SUBST: | |
11343788 | 802 | op_free(cPMOPo->op_pmreplroot); |
971a9dd3 | 803 | goto clear_pmop; |
748a9306 | 804 | case OP_PUSHRE: |
971a9dd3 GS |
805 | #ifdef USE_ITHREADS |
806 | if ((PADOFFSET)cPMOPo->op_pmreplroot) { | |
807 | if (PL_curpad) { | |
808 | GV *gv = (GV*)PL_curpad[(PADOFFSET)cPMOPo->op_pmreplroot]; | |
809 | pad_swipe((PADOFFSET)cPMOPo->op_pmreplroot); | |
810 | /* No GvIN_PAD_off(gv) here, because other references may still | |
811 | * exist on the pad */ | |
812 | SvREFCNT_dec(gv); | |
813 | } | |
814 | } | |
815 | #else | |
816 | SvREFCNT_dec((SV*)cPMOPo->op_pmreplroot); | |
817 | #endif | |
818 | /* FALL THROUGH */ | |
a0d0e21e | 819 | case OP_MATCH: |
8782bef2 | 820 | case OP_QR: |
971a9dd3 | 821 | clear_pmop: |
cb55de95 JH |
822 | { |
823 | HV *pmstash = PmopSTASH(cPMOPo); | |
824 | if (pmstash && SvREFCNT(pmstash)) { | |
825 | PMOP *pmop = HvPMROOT(pmstash); | |
826 | PMOP *lastpmop = NULL; | |
827 | while (pmop) { | |
828 | if (cPMOPo == pmop) { | |
829 | if (lastpmop) | |
830 | lastpmop->op_pmnext = pmop->op_pmnext; | |
831 | else | |
832 | HvPMROOT(pmstash) = pmop->op_pmnext; | |
833 | break; | |
834 | } | |
835 | lastpmop = pmop; | |
836 | pmop = pmop->op_pmnext; | |
837 | } | |
838 | #ifdef USE_ITHREADS | |
839 | Safefree(PmopSTASHPV(cPMOPo)); | |
840 | #else | |
841 | /* NOTE: PMOP.op_pmstash is not refcounted */ | |
842 | #endif | |
843 | } | |
844 | } | |
971a9dd3 | 845 | cPMOPo->op_pmreplroot = Nullop; |
c277df42 | 846 | ReREFCNT_dec(cPMOPo->op_pmregexp); |
acb36ea4 | 847 | cPMOPo->op_pmregexp = (REGEXP*)NULL; |
a0d0e21e | 848 | break; |
79072805 LW |
849 | } |
850 | ||
743e66e6 | 851 | if (o->op_targ > 0) { |
11343788 | 852 | pad_free(o->op_targ); |
743e66e6 GS |
853 | o->op_targ = 0; |
854 | } | |
79072805 LW |
855 | } |
856 | ||
76e3520e | 857 | STATIC void |
3eb57f73 HS |
858 | S_cop_free(pTHX_ COP* cop) |
859 | { | |
860 | Safefree(cop->cop_label); | |
57843af0 | 861 | #ifdef USE_ITHREADS |
f4dd75d9 GS |
862 | Safefree(CopFILE(cop)); /* XXX share in a pvtable? */ |
863 | Safefree(CopSTASHPV(cop)); /* XXX share in a pvtable? */ | |
57843af0 | 864 | #else |
11faa288 | 865 | /* NOTE: COP.cop_stash is not refcounted */ |
cc49e20b | 866 | SvREFCNT_dec(CopFILEGV(cop)); |
57843af0 | 867 | #endif |
0453d815 | 868 | if (! specialWARN(cop->cop_warnings)) |
3eb57f73 | 869 | SvREFCNT_dec(cop->cop_warnings); |
ac27b0f5 NIS |
870 | if (! specialCopIO(cop->cop_io)) |
871 | SvREFCNT_dec(cop->cop_io); | |
3eb57f73 HS |
872 | } |
873 | ||
874 | STATIC void | |
cea2e8a9 | 875 | S_null(pTHX_ OP *o) |
8990e307 | 876 | { |
acb36ea4 GS |
877 | if (o->op_type == OP_NULL) |
878 | return; | |
879 | op_clear(o); | |
11343788 MB |
880 | o->op_targ = o->op_type; |
881 | o->op_type = OP_NULL; | |
22c35a8c | 882 | o->op_ppaddr = PL_ppaddr[OP_NULL]; |
8990e307 LW |
883 | } |
884 | ||
79072805 LW |
885 | /* Contextualizers */ |
886 | ||
463ee0b2 | 887 | #define LINKLIST(o) ((o)->op_next ? (o)->op_next : linklist((OP*)o)) |
79072805 LW |
888 | |
889 | OP * | |
864dbfa3 | 890 | Perl_linklist(pTHX_ OP *o) |
79072805 LW |
891 | { |
892 | register OP *kid; | |
893 | ||
11343788 MB |
894 | if (o->op_next) |
895 | return o->op_next; | |
79072805 LW |
896 | |
897 | /* establish postfix order */ | |
11343788 MB |
898 | if (cUNOPo->op_first) { |
899 | o->op_next = LINKLIST(cUNOPo->op_first); | |
900 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) { | |
79072805 LW |
901 | if (kid->op_sibling) |
902 | kid->op_next = LINKLIST(kid->op_sibling); | |
903 | else | |
11343788 | 904 | kid->op_next = o; |
79072805 LW |
905 | } |
906 | } | |
907 | else | |
11343788 | 908 | o->op_next = o; |
79072805 | 909 | |
11343788 | 910 | return o->op_next; |
79072805 LW |
911 | } |
912 | ||
913 | OP * | |
864dbfa3 | 914 | Perl_scalarkids(pTHX_ OP *o) |
79072805 LW |
915 | { |
916 | OP *kid; | |
11343788 MB |
917 | if (o && o->op_flags & OPf_KIDS) { |
918 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
79072805 LW |
919 | scalar(kid); |
920 | } | |
11343788 | 921 | return o; |
79072805 LW |
922 | } |
923 | ||
76e3520e | 924 | STATIC OP * |
cea2e8a9 | 925 | S_scalarboolean(pTHX_ OP *o) |
8990e307 | 926 | { |
d008e5eb | 927 | if (o->op_type == OP_SASSIGN && cBINOPo->op_first->op_type == OP_CONST) { |
d008e5eb | 928 | if (ckWARN(WARN_SYNTAX)) { |
57843af0 | 929 | line_t oldline = CopLINE(PL_curcop); |
a0d0e21e | 930 | |
d008e5eb | 931 | if (PL_copline != NOLINE) |
57843af0 | 932 | CopLINE_set(PL_curcop, PL_copline); |
cea2e8a9 | 933 | Perl_warner(aTHX_ WARN_SYNTAX, "Found = in conditional, should be =="); |
57843af0 | 934 | CopLINE_set(PL_curcop, oldline); |
d008e5eb | 935 | } |
a0d0e21e | 936 | } |
11343788 | 937 | return scalar(o); |
8990e307 LW |
938 | } |
939 | ||
940 | OP * | |
864dbfa3 | 941 | Perl_scalar(pTHX_ OP *o) |
79072805 LW |
942 | { |
943 | OP *kid; | |
944 | ||
a0d0e21e | 945 | /* assumes no premature commitment */ |
3280af22 | 946 | if (!o || (o->op_flags & OPf_WANT) || PL_error_count |
5dc0d613 | 947 | || o->op_type == OP_RETURN) |
7e363e51 | 948 | { |
11343788 | 949 | return o; |
7e363e51 | 950 | } |
79072805 | 951 | |
5dc0d613 | 952 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_SCALAR; |
79072805 | 953 | |
11343788 | 954 | switch (o->op_type) { |
79072805 | 955 | case OP_REPEAT: |
11343788 | 956 | scalar(cBINOPo->op_first); |
8990e307 | 957 | break; |
79072805 LW |
958 | case OP_OR: |
959 | case OP_AND: | |
960 | case OP_COND_EXPR: | |
11343788 | 961 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
8990e307 | 962 | scalar(kid); |
79072805 | 963 | break; |
a0d0e21e | 964 | case OP_SPLIT: |
11343788 | 965 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e LW |
966 | if (!kPMOP->op_pmreplroot) |
967 | deprecate("implicit split to @_"); | |
968 | } | |
969 | /* FALL THROUGH */ | |
79072805 | 970 | case OP_MATCH: |
8782bef2 | 971 | case OP_QR: |
79072805 LW |
972 | case OP_SUBST: |
973 | case OP_NULL: | |
8990e307 | 974 | default: |
11343788 MB |
975 | if (o->op_flags & OPf_KIDS) { |
976 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) | |
8990e307 LW |
977 | scalar(kid); |
978 | } | |
79072805 LW |
979 | break; |
980 | case OP_LEAVE: | |
981 | case OP_LEAVETRY: | |
5dc0d613 | 982 | kid = cLISTOPo->op_first; |
54310121 | 983 | scalar(kid); |
155aba94 | 984 | while ((kid = kid->op_sibling)) { |
54310121 | 985 | if (kid->op_sibling) |
986 | scalarvoid(kid); | |
987 | else | |
988 | scalar(kid); | |
989 | } | |
3280af22 | 990 | WITH_THR(PL_curcop = &PL_compiling); |
54310121 | 991 | break; |
748a9306 | 992 | case OP_SCOPE: |
79072805 | 993 | case OP_LINESEQ: |
8990e307 | 994 | case OP_LIST: |
11343788 | 995 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
996 | if (kid->op_sibling) |
997 | scalarvoid(kid); | |
998 | else | |
999 | scalar(kid); | |
1000 | } | |
3280af22 | 1001 | WITH_THR(PL_curcop = &PL_compiling); |
79072805 LW |
1002 | break; |
1003 | } | |
11343788 | 1004 | return o; |
79072805 LW |
1005 | } |
1006 | ||
1007 | OP * | |
864dbfa3 | 1008 | Perl_scalarvoid(pTHX_ OP *o) |
79072805 LW |
1009 | { |
1010 | OP *kid; | |
8990e307 LW |
1011 | char* useless = 0; |
1012 | SV* sv; | |
2ebea0a1 GS |
1013 | U8 want; |
1014 | ||
acb36ea4 GS |
1015 | if (o->op_type == OP_NEXTSTATE |
1016 | || o->op_type == OP_SETSTATE | |
1017 | || o->op_type == OP_DBSTATE | |
1018 | || (o->op_type == OP_NULL && (o->op_targ == OP_NEXTSTATE | |
1019 | || o->op_targ == OP_SETSTATE | |
1020 | || o->op_targ == OP_DBSTATE))) | |
2ebea0a1 | 1021 | PL_curcop = (COP*)o; /* for warning below */ |
79072805 | 1022 | |
54310121 | 1023 | /* assumes no premature commitment */ |
2ebea0a1 GS |
1024 | want = o->op_flags & OPf_WANT; |
1025 | if ((want && want != OPf_WANT_SCALAR) || PL_error_count | |
5dc0d613 | 1026 | || o->op_type == OP_RETURN) |
7e363e51 | 1027 | { |
11343788 | 1028 | return o; |
7e363e51 | 1029 | } |
79072805 | 1030 | |
b162f9ea | 1031 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
1032 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
1033 | { | |
b162f9ea | 1034 | return scalar(o); /* As if inside SASSIGN */ |
7e363e51 | 1035 | } |
1c846c1f | 1036 | |
5dc0d613 | 1037 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_VOID; |
79072805 | 1038 | |
11343788 | 1039 | switch (o->op_type) { |
79072805 | 1040 | default: |
22c35a8c | 1041 | if (!(PL_opargs[o->op_type] & OA_FOLDCONST)) |
8990e307 | 1042 | break; |
36477c24 | 1043 | /* FALL THROUGH */ |
1044 | case OP_REPEAT: | |
11343788 | 1045 | if (o->op_flags & OPf_STACKED) |
8990e307 | 1046 | break; |
5d82c453 GA |
1047 | goto func_ops; |
1048 | case OP_SUBSTR: | |
1049 | if (o->op_private == 4) | |
1050 | break; | |
8990e307 LW |
1051 | /* FALL THROUGH */ |
1052 | case OP_GVSV: | |
1053 | case OP_WANTARRAY: | |
1054 | case OP_GV: | |
1055 | case OP_PADSV: | |
1056 | case OP_PADAV: | |
1057 | case OP_PADHV: | |
1058 | case OP_PADANY: | |
1059 | case OP_AV2ARYLEN: | |
8990e307 | 1060 | case OP_REF: |
a0d0e21e LW |
1061 | case OP_REFGEN: |
1062 | case OP_SREFGEN: | |
8990e307 LW |
1063 | case OP_DEFINED: |
1064 | case OP_HEX: | |
1065 | case OP_OCT: | |
1066 | case OP_LENGTH: | |
8990e307 LW |
1067 | case OP_VEC: |
1068 | case OP_INDEX: | |
1069 | case OP_RINDEX: | |
1070 | case OP_SPRINTF: | |
1071 | case OP_AELEM: | |
1072 | case OP_AELEMFAST: | |
1073 | case OP_ASLICE: | |
8990e307 LW |
1074 | case OP_HELEM: |
1075 | case OP_HSLICE: | |
1076 | case OP_UNPACK: | |
1077 | case OP_PACK: | |
8990e307 LW |
1078 | case OP_JOIN: |
1079 | case OP_LSLICE: | |
1080 | case OP_ANONLIST: | |
1081 | case OP_ANONHASH: | |
1082 | case OP_SORT: | |
1083 | case OP_REVERSE: | |
1084 | case OP_RANGE: | |
1085 | case OP_FLIP: | |
1086 | case OP_FLOP: | |
1087 | case OP_CALLER: | |
1088 | case OP_FILENO: | |
1089 | case OP_EOF: | |
1090 | case OP_TELL: | |
1091 | case OP_GETSOCKNAME: | |
1092 | case OP_GETPEERNAME: | |
1093 | case OP_READLINK: | |
1094 | case OP_TELLDIR: | |
1095 | case OP_GETPPID: | |
1096 | case OP_GETPGRP: | |
1097 | case OP_GETPRIORITY: | |
1098 | case OP_TIME: | |
1099 | case OP_TMS: | |
1100 | case OP_LOCALTIME: | |
1101 | case OP_GMTIME: | |
1102 | case OP_GHBYNAME: | |
1103 | case OP_GHBYADDR: | |
1104 | case OP_GHOSTENT: | |
1105 | case OP_GNBYNAME: | |
1106 | case OP_GNBYADDR: | |
1107 | case OP_GNETENT: | |
1108 | case OP_GPBYNAME: | |
1109 | case OP_GPBYNUMBER: | |
1110 | case OP_GPROTOENT: | |
1111 | case OP_GSBYNAME: | |
1112 | case OP_GSBYPORT: | |
1113 | case OP_GSERVENT: | |
1114 | case OP_GPWNAM: | |
1115 | case OP_GPWUID: | |
1116 | case OP_GGRNAM: | |
1117 | case OP_GGRGID: | |
1118 | case OP_GETLOGIN: | |
5d82c453 | 1119 | func_ops: |
64aac5a9 | 1120 | if (!(o->op_private & (OPpLVAL_INTRO|OPpOUR_INTRO))) |
22c35a8c | 1121 | useless = PL_op_desc[o->op_type]; |
8990e307 LW |
1122 | break; |
1123 | ||
1124 | case OP_RV2GV: | |
1125 | case OP_RV2SV: | |
1126 | case OP_RV2AV: | |
1127 | case OP_RV2HV: | |
192587c2 | 1128 | if (!(o->op_private & (OPpLVAL_INTRO|OPpOUR_INTRO)) && |
11343788 | 1129 | (!o->op_sibling || o->op_sibling->op_type != OP_READLINE)) |
8990e307 LW |
1130 | useless = "a variable"; |
1131 | break; | |
79072805 LW |
1132 | |
1133 | case OP_CONST: | |
7766f137 | 1134 | sv = cSVOPo_sv; |
7a52d87a GS |
1135 | if (cSVOPo->op_private & OPpCONST_STRICT) |
1136 | no_bareword_allowed(o); | |
1137 | else { | |
d008e5eb GS |
1138 | if (ckWARN(WARN_VOID)) { |
1139 | useless = "a constant"; | |
1140 | if (SvNIOK(sv) && (SvNV(sv) == 0.0 || SvNV(sv) == 1.0)) | |
1141 | useless = 0; | |
1142 | else if (SvPOK(sv)) { | |
a52fe3ac A |
1143 | /* perl4's way of mixing documentation and code |
1144 | (before the invention of POD) was based on a | |
1145 | trick to mix nroff and perl code. The trick was | |
1146 | built upon these three nroff macros being used in | |
1147 | void context. The pink camel has the details in | |
1148 | the script wrapman near page 319. */ | |
d008e5eb GS |
1149 | if (strnEQ(SvPVX(sv), "di", 2) || |
1150 | strnEQ(SvPVX(sv), "ds", 2) || | |
1151 | strnEQ(SvPVX(sv), "ig", 2)) | |
1152 | useless = 0; | |
1153 | } | |
8990e307 LW |
1154 | } |
1155 | } | |
acb36ea4 | 1156 | null(o); /* don't execute or even remember it */ |
79072805 LW |
1157 | break; |
1158 | ||
1159 | case OP_POSTINC: | |
11343788 | 1160 | o->op_type = OP_PREINC; /* pre-increment is faster */ |
22c35a8c | 1161 | o->op_ppaddr = PL_ppaddr[OP_PREINC]; |
79072805 LW |
1162 | break; |
1163 | ||
1164 | case OP_POSTDEC: | |
11343788 | 1165 | o->op_type = OP_PREDEC; /* pre-decrement is faster */ |
22c35a8c | 1166 | o->op_ppaddr = PL_ppaddr[OP_PREDEC]; |
79072805 LW |
1167 | break; |
1168 | ||
79072805 LW |
1169 | case OP_OR: |
1170 | case OP_AND: | |
1171 | case OP_COND_EXPR: | |
11343788 | 1172 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
1173 | scalarvoid(kid); |
1174 | break; | |
5aabfad6 | 1175 | |
a0d0e21e | 1176 | case OP_NULL: |
11343788 | 1177 | if (o->op_flags & OPf_STACKED) |
a0d0e21e | 1178 | break; |
5aabfad6 | 1179 | /* FALL THROUGH */ |
2ebea0a1 GS |
1180 | case OP_NEXTSTATE: |
1181 | case OP_DBSTATE: | |
79072805 LW |
1182 | case OP_ENTERTRY: |
1183 | case OP_ENTER: | |
11343788 | 1184 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1185 | break; |
54310121 | 1186 | /* FALL THROUGH */ |
463ee0b2 | 1187 | case OP_SCOPE: |
79072805 LW |
1188 | case OP_LEAVE: |
1189 | case OP_LEAVETRY: | |
a0d0e21e | 1190 | case OP_LEAVELOOP: |
79072805 | 1191 | case OP_LINESEQ: |
79072805 | 1192 | case OP_LIST: |
11343788 | 1193 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
79072805 LW |
1194 | scalarvoid(kid); |
1195 | break; | |
c90c0ff4 | 1196 | case OP_ENTEREVAL: |
5196be3e | 1197 | scalarkids(o); |
c90c0ff4 | 1198 | break; |
5aabfad6 | 1199 | case OP_REQUIRE: |
c90c0ff4 | 1200 | /* all requires must return a boolean value */ |
5196be3e | 1201 | o->op_flags &= ~OPf_WANT; |
d6483035 GS |
1202 | /* FALL THROUGH */ |
1203 | case OP_SCALAR: | |
5196be3e | 1204 | return scalar(o); |
a0d0e21e | 1205 | case OP_SPLIT: |
11343788 | 1206 | if ((kid = cLISTOPo->op_first) && kid->op_type == OP_PUSHRE) { |
a0d0e21e LW |
1207 | if (!kPMOP->op_pmreplroot) |
1208 | deprecate("implicit split to @_"); | |
1209 | } | |
1210 | break; | |
79072805 | 1211 | } |
411caa50 JH |
1212 | if (useless && ckWARN(WARN_VOID)) |
1213 | Perl_warner(aTHX_ WARN_VOID, "Useless use of %s in void context", useless); | |
11343788 | 1214 | return o; |
79072805 LW |
1215 | } |
1216 | ||
1217 | OP * | |
864dbfa3 | 1218 | Perl_listkids(pTHX_ OP *o) |
79072805 LW |
1219 | { |
1220 | OP *kid; | |
11343788 MB |
1221 | if (o && o->op_flags & OPf_KIDS) { |
1222 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
79072805 LW |
1223 | list(kid); |
1224 | } | |
11343788 | 1225 | return o; |
79072805 LW |
1226 | } |
1227 | ||
1228 | OP * | |
864dbfa3 | 1229 | Perl_list(pTHX_ OP *o) |
79072805 LW |
1230 | { |
1231 | OP *kid; | |
1232 | ||
a0d0e21e | 1233 | /* assumes no premature commitment */ |
3280af22 | 1234 | if (!o || (o->op_flags & OPf_WANT) || PL_error_count |
5dc0d613 | 1235 | || o->op_type == OP_RETURN) |
7e363e51 | 1236 | { |
11343788 | 1237 | return o; |
7e363e51 | 1238 | } |
79072805 | 1239 | |
b162f9ea | 1240 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
1241 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
1242 | { | |
b162f9ea | 1243 | return o; /* As if inside SASSIGN */ |
7e363e51 | 1244 | } |
1c846c1f | 1245 | |
5dc0d613 | 1246 | o->op_flags = (o->op_flags & ~OPf_WANT) | OPf_WANT_LIST; |
79072805 | 1247 | |
11343788 | 1248 | switch (o->op_type) { |
79072805 LW |
1249 | case OP_FLOP: |
1250 | case OP_REPEAT: | |
11343788 | 1251 | list(cBINOPo->op_first); |
79072805 LW |
1252 | break; |
1253 | case OP_OR: | |
1254 | case OP_AND: | |
1255 | case OP_COND_EXPR: | |
11343788 | 1256 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
79072805 LW |
1257 | list(kid); |
1258 | break; | |
1259 | default: | |
1260 | case OP_MATCH: | |
8782bef2 | 1261 | case OP_QR: |
79072805 LW |
1262 | case OP_SUBST: |
1263 | case OP_NULL: | |
11343788 | 1264 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1265 | break; |
11343788 MB |
1266 | if (!o->op_next && cUNOPo->op_first->op_type == OP_FLOP) { |
1267 | list(cBINOPo->op_first); | |
1268 | return gen_constant_list(o); | |
79072805 LW |
1269 | } |
1270 | case OP_LIST: | |
11343788 | 1271 | listkids(o); |
79072805 LW |
1272 | break; |
1273 | case OP_LEAVE: | |
1274 | case OP_LEAVETRY: | |
5dc0d613 | 1275 | kid = cLISTOPo->op_first; |
54310121 | 1276 | list(kid); |
155aba94 | 1277 | while ((kid = kid->op_sibling)) { |
54310121 | 1278 | if (kid->op_sibling) |
1279 | scalarvoid(kid); | |
1280 | else | |
1281 | list(kid); | |
1282 | } | |
3280af22 | 1283 | WITH_THR(PL_curcop = &PL_compiling); |
54310121 | 1284 | break; |
748a9306 | 1285 | case OP_SCOPE: |
79072805 | 1286 | case OP_LINESEQ: |
11343788 | 1287 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
79072805 LW |
1288 | if (kid->op_sibling) |
1289 | scalarvoid(kid); | |
1290 | else | |
1291 | list(kid); | |
1292 | } | |
3280af22 | 1293 | WITH_THR(PL_curcop = &PL_compiling); |
79072805 | 1294 | break; |
c90c0ff4 | 1295 | case OP_REQUIRE: |
1296 | /* all requires must return a boolean value */ | |
5196be3e MB |
1297 | o->op_flags &= ~OPf_WANT; |
1298 | return scalar(o); | |
79072805 | 1299 | } |
11343788 | 1300 | return o; |
79072805 LW |
1301 | } |
1302 | ||
1303 | OP * | |
864dbfa3 | 1304 | Perl_scalarseq(pTHX_ OP *o) |
79072805 LW |
1305 | { |
1306 | OP *kid; | |
1307 | ||
11343788 MB |
1308 | if (o) { |
1309 | if (o->op_type == OP_LINESEQ || | |
1310 | o->op_type == OP_SCOPE || | |
1311 | o->op_type == OP_LEAVE || | |
1312 | o->op_type == OP_LEAVETRY) | |
463ee0b2 | 1313 | { |
11343788 | 1314 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) { |
ed6116ce | 1315 | if (kid->op_sibling) { |
463ee0b2 | 1316 | scalarvoid(kid); |
ed6116ce | 1317 | } |
463ee0b2 | 1318 | } |
3280af22 | 1319 | PL_curcop = &PL_compiling; |
79072805 | 1320 | } |
11343788 | 1321 | o->op_flags &= ~OPf_PARENS; |
3280af22 | 1322 | if (PL_hints & HINT_BLOCK_SCOPE) |
11343788 | 1323 | o->op_flags |= OPf_PARENS; |
79072805 | 1324 | } |
8990e307 | 1325 | else |
11343788 MB |
1326 | o = newOP(OP_STUB, 0); |
1327 | return o; | |
79072805 LW |
1328 | } |
1329 | ||
76e3520e | 1330 | STATIC OP * |
cea2e8a9 | 1331 | S_modkids(pTHX_ OP *o, I32 type) |
79072805 LW |
1332 | { |
1333 | OP *kid; | |
11343788 MB |
1334 | if (o && o->op_flags & OPf_KIDS) { |
1335 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
463ee0b2 | 1336 | mod(kid, type); |
79072805 | 1337 | } |
11343788 | 1338 | return o; |
79072805 LW |
1339 | } |
1340 | ||
79072805 | 1341 | OP * |
864dbfa3 | 1342 | Perl_mod(pTHX_ OP *o, I32 type) |
79072805 LW |
1343 | { |
1344 | OP *kid; | |
2d8e6c8d | 1345 | STRLEN n_a; |
79072805 | 1346 | |
3280af22 | 1347 | if (!o || PL_error_count) |
11343788 | 1348 | return o; |
79072805 | 1349 | |
b162f9ea | 1350 | if ((o->op_private & OPpTARGET_MY) |
7e363e51 GS |
1351 | && (PL_opargs[o->op_type] & OA_TARGLEX))/* OPp share the meaning */ |
1352 | { | |
b162f9ea | 1353 | return o; |
7e363e51 | 1354 | } |
1c846c1f | 1355 | |
11343788 | 1356 | switch (o->op_type) { |
68dc0745 | 1357 | case OP_UNDEF: |
3280af22 | 1358 | PL_modcount++; |
5dc0d613 | 1359 | return o; |
a0d0e21e | 1360 | case OP_CONST: |
9041c2e3 | 1361 | if (o->op_private & (OPpCONST_BARE) && |
d38a0a14 SC |
1362 | !(type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN)) { |
1363 | SV *sv = ((SVOP*)o)->op_sv; | |
1364 | GV *gv; | |
1365 | ||
1366 | /* Could be a filehandle */ | |
9cbac4c7 | 1367 | if ((gv = gv_fetchpv(SvPV_nolen(sv), FALSE, SVt_PVIO))) { |
d38a0a14 SC |
1368 | OP* gvio = newUNOP(OP_RV2GV, 0, newGVOP(OP_GV, 0, gv)); |
1369 | op_free(o); | |
1370 | o = gvio; | |
1371 | } else { | |
1372 | /* OK, it's a sub */ | |
1373 | OP* enter; | |
1374 | gv = gv_fetchpv(SvPV_nolen(sv), TRUE, SVt_PVCV); | |
1375 | ||
9041c2e3 NIS |
1376 | enter = newUNOP(OP_ENTERSUB,0, |
1377 | newUNOP(OP_RV2CV, 0, | |
d38a0a14 SC |
1378 | newGVOP(OP_GV, 0, gv) |
1379 | )); | |
1380 | enter->op_private |= OPpLVAL_INTRO; | |
1381 | op_free(o); | |
1382 | o = enter; | |
1383 | } | |
1384 | break; | |
1385 | } | |
11343788 | 1386 | if (!(o->op_private & (OPpCONST_ARYBASE))) |
a0d0e21e | 1387 | goto nomod; |
3280af22 | 1388 | if (PL_eval_start && PL_eval_start->op_type == OP_CONST) { |
7766f137 | 1389 | PL_compiling.cop_arybase = (I32)SvIV(cSVOPx(PL_eval_start)->op_sv); |
3280af22 | 1390 | PL_eval_start = 0; |
a0d0e21e LW |
1391 | } |
1392 | else if (!type) { | |
3280af22 NIS |
1393 | SAVEI32(PL_compiling.cop_arybase); |
1394 | PL_compiling.cop_arybase = 0; | |
a0d0e21e LW |
1395 | } |
1396 | else if (type == OP_REFGEN) | |
1397 | goto nomod; | |
1398 | else | |
cea2e8a9 | 1399 | Perl_croak(aTHX_ "That use of $[ is unsupported"); |
a0d0e21e | 1400 | break; |
5f05dabc | 1401 | case OP_STUB: |
5196be3e | 1402 | if (o->op_flags & OPf_PARENS) |
5f05dabc | 1403 | break; |
1404 | goto nomod; | |
a0d0e21e LW |
1405 | case OP_ENTERSUB: |
1406 | if ((type == OP_UNDEF || type == OP_REFGEN) && | |
11343788 MB |
1407 | !(o->op_flags & OPf_STACKED)) { |
1408 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
22c35a8c | 1409 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 MB |
1410 | assert(cUNOPo->op_first->op_type == OP_NULL); |
1411 | null(((LISTOP*)cUNOPo->op_first)->op_first);/* disable pushmark */ | |
79072805 LW |
1412 | break; |
1413 | } | |
cd06dffe GS |
1414 | else { /* lvalue subroutine call */ |
1415 | o->op_private |= OPpLVAL_INTRO; | |
e6438c1a | 1416 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
4978d6d9 | 1417 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) { |
cd06dffe GS |
1418 | /* Backward compatibility mode: */ |
1419 | o->op_private |= OPpENTERSUB_INARGS; | |
1420 | break; | |
1421 | } | |
1422 | else { /* Compile-time error message: */ | |
1423 | OP *kid = cUNOPo->op_first; | |
1424 | CV *cv; | |
1425 | OP *okid; | |
1426 | ||
1427 | if (kid->op_type == OP_PUSHMARK) | |
1428 | goto skip_kids; | |
1429 | if (kid->op_type != OP_NULL || kid->op_targ != OP_LIST) | |
1430 | Perl_croak(aTHX_ | |
1431 | "panic: unexpected lvalue entersub " | |
1432 | "args: type/targ %ld:%ld", | |
1433 | (long)kid->op_type,kid->op_targ); | |
1434 | kid = kLISTOP->op_first; | |
1435 | skip_kids: | |
1436 | while (kid->op_sibling) | |
1437 | kid = kid->op_sibling; | |
1438 | if (!(kid->op_type == OP_NULL && kid->op_targ == OP_RV2CV)) { | |
1439 | /* Indirect call */ | |
1440 | if (kid->op_type == OP_METHOD_NAMED | |
1441 | || kid->op_type == OP_METHOD) | |
1442 | { | |
87d7fd28 | 1443 | UNOP *newop; |
cd06dffe GS |
1444 | |
1445 | if (kid->op_sibling || kid->op_next != kid) { | |
1446 | yyerror("panic: unexpected optree near method call"); | |
1447 | break; | |
1448 | } | |
1449 | ||
87d7fd28 | 1450 | NewOp(1101, newop, 1, UNOP); |
349fd7b7 GS |
1451 | newop->op_type = OP_RV2CV; |
1452 | newop->op_ppaddr = PL_ppaddr[OP_RV2CV]; | |
87d7fd28 GS |
1453 | newop->op_first = Nullop; |
1454 | newop->op_next = (OP*)newop; | |
1455 | kid->op_sibling = (OP*)newop; | |
349fd7b7 | 1456 | newop->op_private |= OPpLVAL_INTRO; |
cd06dffe GS |
1457 | break; |
1458 | } | |
1c846c1f | 1459 | |
cd06dffe GS |
1460 | if (kid->op_type != OP_RV2CV) |
1461 | Perl_croak(aTHX_ | |
1462 | "panic: unexpected lvalue entersub " | |
1463 | "entry via type/targ %ld:%ld", | |
1464 | (long)kid->op_type,kid->op_targ); | |
1465 | kid->op_private |= OPpLVAL_INTRO; | |
1466 | break; /* Postpone until runtime */ | |
1467 | } | |
1468 | ||
1469 | okid = kid; | |
1470 | kid = kUNOP->op_first; | |
1471 | if (kid->op_type == OP_NULL && kid->op_targ == OP_RV2SV) | |
1472 | kid = kUNOP->op_first; | |
1473 | if (kid->op_type == OP_NULL) | |
1474 | Perl_croak(aTHX_ | |
1475 | "Unexpected constant lvalue entersub " | |
1476 | "entry via type/targ %ld:%ld", | |
1477 | (long)kid->op_type,kid->op_targ); | |
1478 | if (kid->op_type != OP_GV) { | |
1479 | /* Restore RV2CV to check lvalueness */ | |
1480 | restore_2cv: | |
1481 | if (kid->op_next && kid->op_next != kid) { /* Happens? */ | |
1482 | okid->op_next = kid->op_next; | |
1483 | kid->op_next = okid; | |
1484 | } | |
1485 | else | |
1486 | okid->op_next = Nullop; | |
1487 | okid->op_type = OP_RV2CV; | |
1488 | okid->op_targ = 0; | |
1489 | okid->op_ppaddr = PL_ppaddr[OP_RV2CV]; | |
1490 | okid->op_private |= OPpLVAL_INTRO; | |
1491 | break; | |
1492 | } | |
1493 | ||
638eceb6 | 1494 | cv = GvCV(kGVOP_gv); |
1c846c1f | 1495 | if (!cv) |
cd06dffe GS |
1496 | goto restore_2cv; |
1497 | if (CvLVALUE(cv)) | |
1498 | break; | |
1499 | } | |
1500 | } | |
79072805 LW |
1501 | /* FALL THROUGH */ |
1502 | default: | |
a0d0e21e LW |
1503 | nomod: |
1504 | /* grep, foreach, subcalls, refgen */ | |
1505 | if (type == OP_GREPSTART || type == OP_ENTERSUB || type == OP_REFGEN) | |
1506 | break; | |
cea2e8a9 | 1507 | yyerror(Perl_form(aTHX_ "Can't modify %s in %s", |
638bc118 | 1508 | (o->op_type == OP_NULL && (o->op_flags & OPf_SPECIAL) |
cd06dffe GS |
1509 | ? "do block" |
1510 | : (o->op_type == OP_ENTERSUB | |
1511 | ? "non-lvalue subroutine call" | |
1512 | : PL_op_desc[o->op_type])), | |
22c35a8c | 1513 | type ? PL_op_desc[type] : "local")); |
11343788 | 1514 | return o; |
79072805 | 1515 | |
a0d0e21e LW |
1516 | case OP_PREINC: |
1517 | case OP_PREDEC: | |
1518 | case OP_POW: | |
1519 | case OP_MULTIPLY: | |
1520 | case OP_DIVIDE: | |
1521 | case OP_MODULO: | |
1522 | case OP_REPEAT: | |
1523 | case OP_ADD: | |
1524 | case OP_SUBTRACT: | |
1525 | case OP_CONCAT: | |
1526 | case OP_LEFT_SHIFT: | |
1527 | case OP_RIGHT_SHIFT: | |
1528 | case OP_BIT_AND: | |
1529 | case OP_BIT_XOR: | |
1530 | case OP_BIT_OR: | |
1531 | case OP_I_MULTIPLY: | |
1532 | case OP_I_DIVIDE: | |
1533 | case OP_I_MODULO: | |
1534 | case OP_I_ADD: | |
1535 | case OP_I_SUBTRACT: | |
11343788 | 1536 | if (!(o->op_flags & OPf_STACKED)) |
a0d0e21e | 1537 | goto nomod; |
3280af22 | 1538 | PL_modcount++; |
a0d0e21e LW |
1539 | break; |
1540 | ||
79072805 | 1541 | case OP_COND_EXPR: |
11343788 | 1542 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 | 1543 | mod(kid, type); |
79072805 LW |
1544 | break; |
1545 | ||
1546 | case OP_RV2AV: | |
1547 | case OP_RV2HV: | |
93af7a87 | 1548 | if (!type && cUNOPo->op_first->op_type != OP_GV) |
cea2e8a9 | 1549 | Perl_croak(aTHX_ "Can't localize through a reference"); |
11343788 | 1550 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) { |
e6438c1a | 1551 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
11343788 | 1552 | return o; /* Treat \(@foo) like ordinary list. */ |
748a9306 LW |
1553 | } |
1554 | /* FALL THROUGH */ | |
79072805 | 1555 | case OP_RV2GV: |
5dc0d613 | 1556 | if (scalar_mod_type(o, type)) |
3fe9a6f1 | 1557 | goto nomod; |
11343788 | 1558 | ref(cUNOPo->op_first, o->op_type); |
79072805 | 1559 | /* FALL THROUGH */ |
79072805 LW |
1560 | case OP_ASLICE: |
1561 | case OP_HSLICE: | |
78f9721b SM |
1562 | if (type == OP_LEAVESUBLV) |
1563 | o->op_private |= OPpMAYBE_LVSUB; | |
1564 | /* FALL THROUGH */ | |
1565 | case OP_AASSIGN: | |
93a17b20 LW |
1566 | case OP_NEXTSTATE: |
1567 | case OP_DBSTATE: | |
a0d0e21e | 1568 | case OP_CHOMP: |
e6438c1a | 1569 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
79072805 | 1570 | break; |
463ee0b2 | 1571 | case OP_RV2SV: |
11343788 | 1572 | if (!type && cUNOPo->op_first->op_type != OP_GV) |
cea2e8a9 | 1573 | Perl_croak(aTHX_ "Can't localize through a reference"); |
aeea060c | 1574 | ref(cUNOPo->op_first, o->op_type); |
463ee0b2 | 1575 | /* FALL THROUGH */ |
79072805 | 1576 | case OP_GV: |
463ee0b2 | 1577 | case OP_AV2ARYLEN: |
3280af22 | 1578 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 1579 | case OP_SASSIGN: |
bf4b1e52 GS |
1580 | case OP_ANDASSIGN: |
1581 | case OP_ORASSIGN: | |
8990e307 | 1582 | case OP_AELEMFAST: |
3280af22 | 1583 | PL_modcount++; |
8990e307 LW |
1584 | break; |
1585 | ||
748a9306 LW |
1586 | case OP_PADAV: |
1587 | case OP_PADHV: | |
e6438c1a | 1588 | PL_modcount = RETURN_UNLIMITED_NUMBER; |
5196be3e MB |
1589 | if (type == OP_REFGEN && o->op_flags & OPf_PARENS) |
1590 | return o; /* Treat \(@foo) like ordinary list. */ | |
1591 | if (scalar_mod_type(o, type)) | |
3fe9a6f1 | 1592 | goto nomod; |
78f9721b SM |
1593 | if (type == OP_LEAVESUBLV) |
1594 | o->op_private |= OPpMAYBE_LVSUB; | |
748a9306 LW |
1595 | /* FALL THROUGH */ |
1596 | case OP_PADSV: | |
3280af22 | 1597 | PL_modcount++; |
748a9306 | 1598 | if (!type) |
cea2e8a9 | 1599 | Perl_croak(aTHX_ "Can't localize lexical variable %s", |
2d8e6c8d | 1600 | SvPV(*av_fetch(PL_comppad_name, o->op_targ, 4), n_a)); |
463ee0b2 LW |
1601 | break; |
1602 | ||
554b3eca | 1603 | #ifdef USE_THREADS |
2faa37cc | 1604 | case OP_THREADSV: |
533c011a | 1605 | PL_modcount++; /* XXX ??? */ |
554b3eca MB |
1606 | break; |
1607 | #endif /* USE_THREADS */ | |
1608 | ||
748a9306 LW |
1609 | case OP_PUSHMARK: |
1610 | break; | |
a0d0e21e | 1611 | |
69969c6f SB |
1612 | case OP_KEYS: |
1613 | if (type != OP_SASSIGN) | |
1614 | goto nomod; | |
5d82c453 GA |
1615 | goto lvalue_func; |
1616 | case OP_SUBSTR: | |
1617 | if (o->op_private == 4) /* don't allow 4 arg substr as lvalue */ | |
1618 | goto nomod; | |
5f05dabc | 1619 | /* FALL THROUGH */ |
a0d0e21e | 1620 | case OP_POS: |
463ee0b2 | 1621 | case OP_VEC: |
78f9721b SM |
1622 | if (type == OP_LEAVESUBLV) |
1623 | o->op_private |= OPpMAYBE_LVSUB; | |
5d82c453 | 1624 | lvalue_func: |
11343788 MB |
1625 | pad_free(o->op_targ); |
1626 | o->op_targ = pad_alloc(o->op_type, SVs_PADMY); | |
5dc0d613 | 1627 | assert(SvTYPE(PAD_SV(o->op_targ)) == SVt_NULL); |
11343788 MB |
1628 | if (o->op_flags & OPf_KIDS) |
1629 | mod(cBINOPo->op_first->op_sibling, type); | |
463ee0b2 | 1630 | break; |
a0d0e21e | 1631 | |
463ee0b2 LW |
1632 | case OP_AELEM: |
1633 | case OP_HELEM: | |
11343788 | 1634 | ref(cBINOPo->op_first, o->op_type); |
68dc0745 | 1635 | if (type == OP_ENTERSUB && |
5dc0d613 MB |
1636 | !(o->op_private & (OPpLVAL_INTRO | OPpDEREF))) |
1637 | o->op_private |= OPpLVAL_DEFER; | |
78f9721b SM |
1638 | if (type == OP_LEAVESUBLV) |
1639 | o->op_private |= OPpMAYBE_LVSUB; | |
3280af22 | 1640 | PL_modcount++; |
463ee0b2 LW |
1641 | break; |
1642 | ||
1643 | case OP_SCOPE: | |
1644 | case OP_LEAVE: | |
1645 | case OP_ENTER: | |
78f9721b | 1646 | case OP_LINESEQ: |
11343788 MB |
1647 | if (o->op_flags & OPf_KIDS) |
1648 | mod(cLISTOPo->op_last, type); | |
a0d0e21e LW |
1649 | break; |
1650 | ||
1651 | case OP_NULL: | |
638bc118 GS |
1652 | if (o->op_flags & OPf_SPECIAL) /* do BLOCK */ |
1653 | goto nomod; | |
1654 | else if (!(o->op_flags & OPf_KIDS)) | |
463ee0b2 | 1655 | break; |
11343788 MB |
1656 | if (o->op_targ != OP_LIST) { |
1657 | mod(cBINOPo->op_first, type); | |
a0d0e21e LW |
1658 | break; |
1659 | } | |
1660 | /* FALL THROUGH */ | |
463ee0b2 | 1661 | case OP_LIST: |
11343788 | 1662 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1663 | mod(kid, type); |
1664 | break; | |
78f9721b SM |
1665 | |
1666 | case OP_RETURN: | |
1667 | if (type != OP_LEAVESUBLV) | |
1668 | goto nomod; | |
1669 | break; /* mod()ing was handled by ck_return() */ | |
463ee0b2 | 1670 | } |
78f9721b SM |
1671 | if (type != OP_LEAVESUBLV) |
1672 | o->op_flags |= OPf_MOD; | |
a0d0e21e LW |
1673 | |
1674 | if (type == OP_AASSIGN || type == OP_SASSIGN) | |
11343788 | 1675 | o->op_flags |= OPf_SPECIAL|OPf_REF; |
a0d0e21e | 1676 | else if (!type) { |
11343788 MB |
1677 | o->op_private |= OPpLVAL_INTRO; |
1678 | o->op_flags &= ~OPf_SPECIAL; | |
3280af22 | 1679 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 1680 | } |
78f9721b SM |
1681 | else if (type != OP_GREPSTART && type != OP_ENTERSUB |
1682 | && type != OP_LEAVESUBLV) | |
11343788 MB |
1683 | o->op_flags |= OPf_REF; |
1684 | return o; | |
463ee0b2 LW |
1685 | } |
1686 | ||
864dbfa3 | 1687 | STATIC bool |
cea2e8a9 | 1688 | S_scalar_mod_type(pTHX_ OP *o, I32 type) |
3fe9a6f1 | 1689 | { |
1690 | switch (type) { | |
1691 | case OP_SASSIGN: | |
5196be3e | 1692 | if (o->op_type == OP_RV2GV) |
3fe9a6f1 | 1693 | return FALSE; |
1694 | /* FALL THROUGH */ | |
1695 | case OP_PREINC: | |
1696 | case OP_PREDEC: | |
1697 | case OP_POSTINC: | |
1698 | case OP_POSTDEC: | |
1699 | case OP_I_PREINC: | |
1700 | case OP_I_PREDEC: | |
1701 | case OP_I_POSTINC: | |
1702 | case OP_I_POSTDEC: | |
1703 | case OP_POW: | |
1704 | case OP_MULTIPLY: | |
1705 | case OP_DIVIDE: | |
1706 | case OP_MODULO: | |
1707 | case OP_REPEAT: | |
1708 | case OP_ADD: | |
1709 | case OP_SUBTRACT: | |
1710 | case OP_I_MULTIPLY: | |
1711 | case OP_I_DIVIDE: | |
1712 | case OP_I_MODULO: | |
1713 | case OP_I_ADD: | |
1714 | case OP_I_SUBTRACT: | |
1715 | case OP_LEFT_SHIFT: | |
1716 | case OP_RIGHT_SHIFT: | |
1717 | case OP_BIT_AND: | |
1718 | case OP_BIT_XOR: | |
1719 | case OP_BIT_OR: | |
1720 | case OP_CONCAT: | |
1721 | case OP_SUBST: | |
1722 | case OP_TRANS: | |
49e9fbe6 GS |
1723 | case OP_READ: |
1724 | case OP_SYSREAD: | |
1725 | case OP_RECV: | |
bf4b1e52 GS |
1726 | case OP_ANDASSIGN: |
1727 | case OP_ORASSIGN: | |
3fe9a6f1 | 1728 | return TRUE; |
1729 | default: | |
1730 | return FALSE; | |
1731 | } | |
1732 | } | |
1733 | ||
35cd451c | 1734 | STATIC bool |
cea2e8a9 | 1735 | S_is_handle_constructor(pTHX_ OP *o, I32 argnum) |
35cd451c GS |
1736 | { |
1737 | switch (o->op_type) { | |
1738 | case OP_PIPE_OP: | |
1739 | case OP_SOCKPAIR: | |
1740 | if (argnum == 2) | |
1741 | return TRUE; | |
1742 | /* FALL THROUGH */ | |
1743 | case OP_SYSOPEN: | |
1744 | case OP_OPEN: | |
ded8aa31 | 1745 | case OP_SELECT: /* XXX c.f. SelectSaver.pm */ |
35cd451c GS |
1746 | case OP_SOCKET: |
1747 | case OP_OPEN_DIR: | |
1748 | case OP_ACCEPT: | |
1749 | if (argnum == 1) | |
1750 | return TRUE; | |
1751 | /* FALL THROUGH */ | |
1752 | default: | |
1753 | return FALSE; | |
1754 | } | |
1755 | } | |
1756 | ||
463ee0b2 | 1757 | OP * |
864dbfa3 | 1758 | Perl_refkids(pTHX_ OP *o, I32 type) |
463ee0b2 LW |
1759 | { |
1760 | OP *kid; | |
11343788 MB |
1761 | if (o && o->op_flags & OPf_KIDS) { |
1762 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) | |
463ee0b2 LW |
1763 | ref(kid, type); |
1764 | } | |
11343788 | 1765 | return o; |
463ee0b2 LW |
1766 | } |
1767 | ||
1768 | OP * | |
864dbfa3 | 1769 | Perl_ref(pTHX_ OP *o, I32 type) |
463ee0b2 LW |
1770 | { |
1771 | OP *kid; | |
463ee0b2 | 1772 | |
3280af22 | 1773 | if (!o || PL_error_count) |
11343788 | 1774 | return o; |
463ee0b2 | 1775 | |
11343788 | 1776 | switch (o->op_type) { |
a0d0e21e | 1777 | case OP_ENTERSUB: |
afebc493 | 1778 | if ((type == OP_EXISTS || type == OP_DEFINED || type == OP_LOCK) && |
11343788 MB |
1779 | !(o->op_flags & OPf_STACKED)) { |
1780 | o->op_type = OP_RV2CV; /* entersub => rv2cv */ | |
22c35a8c | 1781 | o->op_ppaddr = PL_ppaddr[OP_RV2CV]; |
11343788 MB |
1782 | assert(cUNOPo->op_first->op_type == OP_NULL); |
1783 | null(((LISTOP*)cUNOPo->op_first)->op_first); /* disable pushmark */ | |
1784 | o->op_flags |= OPf_SPECIAL; | |
8990e307 LW |
1785 | } |
1786 | break; | |
aeea060c | 1787 | |
463ee0b2 | 1788 | case OP_COND_EXPR: |
11343788 | 1789 | for (kid = cUNOPo->op_first->op_sibling; kid; kid = kid->op_sibling) |
463ee0b2 LW |
1790 | ref(kid, type); |
1791 | break; | |
8990e307 | 1792 | case OP_RV2SV: |
35cd451c GS |
1793 | if (type == OP_DEFINED) |
1794 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
11343788 | 1795 | ref(cUNOPo->op_first, o->op_type); |
4633a7c4 LW |
1796 | /* FALL THROUGH */ |
1797 | case OP_PADSV: | |
5f05dabc | 1798 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1799 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1800 | : type == OP_RV2HV ? OPpDEREF_HV | |
1801 | : OPpDEREF_SV); | |
11343788 | 1802 | o->op_flags |= OPf_MOD; |
a0d0e21e | 1803 | } |
8990e307 | 1804 | break; |
1c846c1f | 1805 | |
2faa37cc | 1806 | case OP_THREADSV: |
a863c7d1 MB |
1807 | o->op_flags |= OPf_MOD; /* XXX ??? */ |
1808 | break; | |
1809 | ||
463ee0b2 LW |
1810 | case OP_RV2AV: |
1811 | case OP_RV2HV: | |
aeea060c | 1812 | o->op_flags |= OPf_REF; |
8990e307 | 1813 | /* FALL THROUGH */ |
463ee0b2 | 1814 | case OP_RV2GV: |
35cd451c GS |
1815 | if (type == OP_DEFINED) |
1816 | o->op_flags |= OPf_SPECIAL; /* don't create GV */ | |
11343788 | 1817 | ref(cUNOPo->op_first, o->op_type); |
463ee0b2 | 1818 | break; |
8990e307 | 1819 | |
463ee0b2 LW |
1820 | case OP_PADAV: |
1821 | case OP_PADHV: | |
aeea060c | 1822 | o->op_flags |= OPf_REF; |
79072805 | 1823 | break; |
aeea060c | 1824 | |
8990e307 | 1825 | case OP_SCALAR: |
79072805 | 1826 | case OP_NULL: |
11343788 | 1827 | if (!(o->op_flags & OPf_KIDS)) |
463ee0b2 | 1828 | break; |
11343788 | 1829 | ref(cBINOPo->op_first, type); |
79072805 LW |
1830 | break; |
1831 | case OP_AELEM: | |
1832 | case OP_HELEM: | |
11343788 | 1833 | ref(cBINOPo->op_first, o->op_type); |
5f05dabc | 1834 | if (type == OP_RV2SV || type == OP_RV2AV || type == OP_RV2HV) { |
5dc0d613 MB |
1835 | o->op_private |= (type == OP_RV2AV ? OPpDEREF_AV |
1836 | : type == OP_RV2HV ? OPpDEREF_HV | |
1837 | : OPpDEREF_SV); | |
11343788 | 1838 | o->op_flags |= OPf_MOD; |
8990e307 | 1839 | } |
79072805 LW |
1840 | break; |
1841 | ||
463ee0b2 | 1842 | case OP_SCOPE: |
79072805 LW |
1843 | case OP_LEAVE: |
1844 | case OP_ENTER: | |
8990e307 | 1845 | case OP_LIST: |
11343788 | 1846 | if (!(o->op_flags & OPf_KIDS)) |
79072805 | 1847 | break; |
11343788 | 1848 | ref(cLISTOPo->op_last, type); |
79072805 | 1849 | break; |
a0d0e21e LW |
1850 | default: |
1851 | break; | |
79072805 | 1852 | } |
11343788 | 1853 | return scalar(o); |
8990e307 | 1854 | |
79072805 LW |
1855 | } |
1856 | ||
09bef843 SB |
1857 | STATIC OP * |
1858 | S_dup_attrlist(pTHX_ OP *o) | |
1859 | { | |
1860 | OP *rop = Nullop; | |
1861 | ||
1862 | /* An attrlist is either a simple OP_CONST or an OP_LIST with kids, | |
1863 | * where the first kid is OP_PUSHMARK and the remaining ones | |
1864 | * are OP_CONST. We need to push the OP_CONST values. | |
1865 | */ | |
1866 | if (o->op_type == OP_CONST) | |
1867 | rop = newSVOP(OP_CONST, o->op_flags, SvREFCNT_inc(cSVOPo->op_sv)); | |
1868 | else { | |
1869 | assert((o->op_type == OP_LIST) && (o->op_flags & OPf_KIDS)); | |
1870 | for (o = cLISTOPo->op_first; o; o=o->op_sibling) { | |
1871 | if (o->op_type == OP_CONST) | |
1872 | rop = append_elem(OP_LIST, rop, | |
1873 | newSVOP(OP_CONST, o->op_flags, | |
1874 | SvREFCNT_inc(cSVOPo->op_sv))); | |
1875 | } | |
1876 | } | |
1877 | return rop; | |
1878 | } | |
1879 | ||
1880 | STATIC void | |
1881 | S_apply_attrs(pTHX_ HV *stash, SV *target, OP *attrs) | |
1882 | { | |
09bef843 SB |
1883 | SV *stashsv; |
1884 | ||
1885 | /* fake up C<use attributes $pkg,$rv,@attrs> */ | |
1886 | ENTER; /* need to protect against side-effects of 'use' */ | |
1887 | SAVEINT(PL_expect); | |
1888 | if (stash && HvNAME(stash)) | |
1889 | stashsv = newSVpv(HvNAME(stash), 0); | |
1890 | else | |
1891 | stashsv = &PL_sv_no; | |
e4783991 | 1892 | |
09bef843 | 1893 | #define ATTRSMODULE "attributes" |
e4783991 GS |
1894 | |
1895 | Perl_load_module(aTHX_ PERL_LOADMOD_IMPORT_OPS, | |
1896 | newSVpvn(ATTRSMODULE, sizeof(ATTRSMODULE)-1), | |
1897 | Nullsv, | |
1898 | prepend_elem(OP_LIST, | |
1899 | newSVOP(OP_CONST, 0, stashsv), | |
1900 | prepend_elem(OP_LIST, | |
1901 | newSVOP(OP_CONST, 0, | |
1902 | newRV(target)), | |
1903 | dup_attrlist(attrs)))); | |
09bef843 SB |
1904 | LEAVE; |
1905 | } | |
1906 | ||
be3174d2 GS |
1907 | void |
1908 | Perl_apply_attrs_string(pTHX_ char *stashpv, CV *cv, | |
1909 | char *attrstr, STRLEN len) | |
1910 | { | |
1911 | OP *attrs = Nullop; | |
1912 | ||
1913 | if (!len) { | |
1914 | len = strlen(attrstr); | |
1915 | } | |
1916 | ||
1917 | while (len) { | |
1918 | for (; isSPACE(*attrstr) && len; --len, ++attrstr) ; | |
1919 | if (len) { | |
1920 | char *sstr = attrstr; | |
1921 | for (; !isSPACE(*attrstr) && len; --len, ++attrstr) ; | |
1922 | attrs = append_elem(OP_LIST, attrs, | |
1923 | newSVOP(OP_CONST, 0, | |
1924 | newSVpvn(sstr, attrstr-sstr))); | |
1925 | } | |
1926 | } | |
1927 | ||
1928 | Perl_load_module(aTHX_ PERL_LOADMOD_IMPORT_OPS, | |
1929 | newSVpvn(ATTRSMODULE, sizeof(ATTRSMODULE)-1), | |
1930 | Nullsv, prepend_elem(OP_LIST, | |
1931 | newSVOP(OP_CONST, 0, newSVpv(stashpv,0)), | |
1932 | prepend_elem(OP_LIST, | |
1933 | newSVOP(OP_CONST, 0, | |
1934 | newRV((SV*)cv)), | |
1935 | attrs))); | |
1936 | } | |
1937 | ||
09bef843 SB |
1938 | STATIC OP * |
1939 | S_my_kid(pTHX_ OP *o, OP *attrs) | |
93a17b20 LW |
1940 | { |
1941 | OP *kid; | |
93a17b20 LW |
1942 | I32 type; |
1943 | ||
3280af22 | 1944 | if (!o || PL_error_count) |
11343788 | 1945 | return o; |
93a17b20 | 1946 | |
11343788 | 1947 | type = o->op_type; |
93a17b20 | 1948 | if (type == OP_LIST) { |
11343788 | 1949 | for (kid = cLISTOPo->op_first; kid; kid = kid->op_sibling) |
09bef843 | 1950 | my_kid(kid, attrs); |
dab48698 | 1951 | } else if (type == OP_UNDEF) { |
7766148a | 1952 | return o; |
77ca0c92 LW |
1953 | } else if (type == OP_RV2SV || /* "our" declaration */ |
1954 | type == OP_RV2AV || | |
1955 | type == OP_RV2HV) { /* XXX does this let anything illegal in? */ | |
0256094b DM |
1956 | if (attrs) { |
1957 | GV *gv = cGVOPx_gv(cUNOPo->op_first); | |
1958 | PL_in_my = FALSE; | |
1959 | PL_in_my_stash = Nullhv; | |
1960 | apply_attrs(GvSTASH(gv), | |
1961 | (type == OP_RV2SV ? GvSV(gv) : | |
1962 | type == OP_RV2AV ? (SV*)GvAV(gv) : | |
1963 | type == OP_RV2HV ? (SV*)GvHV(gv) : (SV*)gv), | |
1964 | attrs); | |
1965 | } | |
192587c2 | 1966 | o->op_private |= OPpOUR_INTRO; |
77ca0c92 | 1967 | return o; |
dab48698 | 1968 | } else if (type != OP_PADSV && |
93a17b20 LW |
1969 | type != OP_PADAV && |
1970 | type != OP_PADHV && | |
1971 | type != OP_PUSHMARK) | |
1972 | { | |
eb64745e GS |
1973 | yyerror(Perl_form(aTHX_ "Can't declare %s in \"%s\"", |
1974 | PL_op_desc[o->op_type], | |
1975 | PL_in_my == KEY_our ? "our" : "my")); | |
11343788 | 1976 | return o; |
93a17b20 | 1977 | } |
09bef843 SB |
1978 | else if (attrs && type != OP_PUSHMARK) { |
1979 | HV *stash; | |
1980 | SV *padsv; | |
1981 | SV **namesvp; | |
1982 | ||
eb64745e GS |
1983 | PL_in_my = FALSE; |
1984 | PL_in_my_stash = Nullhv; | |
1985 | ||
09bef843 SB |
1986 | /* check for C<my Dog $spot> when deciding package */ |
1987 | namesvp = av_fetch(PL_comppad_name, o->op_targ, FALSE); | |
1988 | if (namesvp && *namesvp && SvOBJECT(*namesvp) && HvNAME(SvSTASH(*namesvp))) | |
1989 | stash = SvSTASH(*namesvp); | |
1990 | else | |
1991 | stash = PL_curstash; | |
1992 | padsv = PAD_SV(o->op_targ); | |
1993 | apply_attrs(stash, padsv, attrs); | |
1994 | } | |
11343788 MB |
1995 | o->op_flags |= OPf_MOD; |
1996 | o->op_private |= OPpLVAL_INTRO; | |
1997 | return o; | |
93a17b20 LW |
1998 | } |
1999 | ||
2000 | OP * | |
09bef843 SB |
2001 | Perl_my_attrs(pTHX_ OP *o, OP *attrs) |
2002 | { | |
2003 | if (o->op_flags & OPf_PARENS) | |
2004 | list(o); | |
09bef843 SB |
2005 | if (attrs) |
2006 | SAVEFREEOP(attrs); | |
eb64745e GS |
2007 | o = my_kid(o, attrs); |
2008 | PL_in_my = FALSE; | |
2009 | PL_in_my_stash = Nullhv; | |
2010 | return o; | |
09bef843 SB |
2011 | } |
2012 | ||
2013 | OP * | |
2014 | Perl_my(pTHX_ OP *o) | |
2015 | { | |
2016 | return my_kid(o, Nullop); | |
2017 | } | |
2018 | ||
2019 | OP * | |
864dbfa3 | 2020 | Perl_sawparens(pTHX_ OP *o) |
79072805 LW |
2021 | { |
2022 | if (o) | |
2023 | o->op_flags |= OPf_PARENS; | |
2024 | return o; | |
2025 | } | |
2026 | ||
2027 | OP * | |
864dbfa3 | 2028 | Perl_bind_match(pTHX_ I32 type, OP *left, OP *right) |
79072805 | 2029 | { |
11343788 | 2030 | OP *o; |
79072805 | 2031 | |
e476b1b5 | 2032 | if (ckWARN(WARN_MISC) && |
599cee73 PM |
2033 | (left->op_type == OP_RV2AV || |
2034 | left->op_type == OP_RV2HV || | |
2035 | left->op_type == OP_PADAV || | |
2036 | left->op_type == OP_PADHV)) { | |
22c35a8c | 2037 | char *desc = PL_op_desc[(right->op_type == OP_SUBST || |
599cee73 PM |
2038 | right->op_type == OP_TRANS) |
2039 | ? right->op_type : OP_MATCH]; | |
dff6d3cd GS |
2040 | const char *sample = ((left->op_type == OP_RV2AV || |
2041 | left->op_type == OP_PADAV) | |
2042 | ? "@array" : "%hash"); | |
e476b1b5 | 2043 | Perl_warner(aTHX_ WARN_MISC, |
1c846c1f | 2044 | "Applying %s to %s will act on scalar(%s)", |
599cee73 | 2045 | desc, sample, sample); |
2ae324a7 | 2046 | } |
2047 | ||
de4bf5b3 MG |
2048 | if (!(right->op_flags & OPf_STACKED) && |
2049 | (right->op_type == OP_MATCH || | |
79072805 | 2050 | right->op_type == OP_SUBST || |
de4bf5b3 | 2051 | right->op_type == OP_TRANS)) { |
79072805 | 2052 | right->op_flags |= OPf_STACKED; |
d897a58d MG |
2053 | if (right->op_type != OP_MATCH && |
2054 | ! (right->op_type == OP_TRANS && | |
2055 | right->op_private & OPpTRANS_IDENTICAL)) | |
463ee0b2 | 2056 | left = mod(left, right->op_type); |
79072805 | 2057 | if (right->op_type == OP_TRANS) |
11343788 | 2058 | o = newBINOP(OP_NULL, OPf_STACKED, scalar(left), right); |
79072805 | 2059 | else |
11343788 | 2060 | o = prepend_elem(right->op_type, scalar(left), right); |
79072805 | 2061 | if (type == OP_NOT) |
11343788 MB |
2062 | return newUNOP(OP_NOT, 0, scalar(o)); |
2063 | return o; | |
79072805 LW |
2064 | } |
2065 | else | |
2066 | return bind_match(type, left, | |
2067 | pmruntime(newPMOP(OP_MATCH, 0), right, Nullop)); | |
2068 | } | |
2069 | ||
2070 | OP * | |
864dbfa3 | 2071 | Perl_invert(pTHX_ OP *o) |
79072805 | 2072 | { |
11343788 MB |
2073 | if (!o) |
2074 | return o; | |
79072805 | 2075 | /* XXX need to optimize away NOT NOT here? Or do we let optimizer do it? */ |
11343788 | 2076 | return newUNOP(OP_NOT, OPf_SPECIAL, scalar(o)); |
79072805 LW |
2077 | } |
2078 | ||
2079 | OP * | |
864dbfa3 | 2080 | Perl_scope(pTHX_ OP *o) |
79072805 LW |
2081 | { |
2082 | if (o) { | |
3280af22 | 2083 | if (o->op_flags & OPf_PARENS || PERLDB_NOOPT || PL_tainting) { |
463ee0b2 LW |
2084 | o = prepend_elem(OP_LINESEQ, newOP(OP_ENTER, 0), o); |
2085 | o->op_type = OP_LEAVE; | |
22c35a8c | 2086 | o->op_ppaddr = PL_ppaddr[OP_LEAVE]; |
463ee0b2 LW |
2087 | } |
2088 | else { | |
2089 | if (o->op_type == OP_LINESEQ) { | |
2090 | OP *kid; | |
2091 | o->op_type = OP_SCOPE; | |
22c35a8c | 2092 | o->op_ppaddr = PL_ppaddr[OP_SCOPE]; |
c3ed7a6a GS |
2093 | kid = ((LISTOP*)o)->op_first; |
2094 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) | |
2095 | null(kid); | |
463ee0b2 LW |
2096 | } |
2097 | else | |
748a9306 | 2098 | o = newLISTOP(OP_SCOPE, 0, o, Nullop); |
463ee0b2 | 2099 | } |
79072805 LW |
2100 | } |
2101 | return o; | |
2102 | } | |
2103 | ||
b3ac6de7 | 2104 | void |
864dbfa3 | 2105 | Perl_save_hints(pTHX) |
b3ac6de7 | 2106 | { |
3280af22 NIS |
2107 | SAVEI32(PL_hints); |
2108 | SAVESPTR(GvHV(PL_hintgv)); | |
2109 | GvHV(PL_hintgv) = newHVhv(GvHV(PL_hintgv)); | |
2110 | SAVEFREESV(GvHV(PL_hintgv)); | |
b3ac6de7 IZ |
2111 | } |
2112 | ||
a0d0e21e | 2113 | int |
864dbfa3 | 2114 | Perl_block_start(pTHX_ int full) |
79072805 | 2115 | { |
3280af22 | 2116 | int retval = PL_savestack_ix; |
b3ac6de7 | 2117 | |
3280af22 | 2118 | SAVEI32(PL_comppad_name_floor); |
43d4d5c6 GS |
2119 | PL_comppad_name_floor = AvFILLp(PL_comppad_name); |
2120 | if (full) | |
2121 | PL_comppad_name_fill = PL_comppad_name_floor; | |
2122 | if (PL_comppad_name_floor < 0) | |
2123 | PL_comppad_name_floor = 0; | |
3280af22 NIS |
2124 | SAVEI32(PL_min_intro_pending); |
2125 | SAVEI32(PL_max_intro_pending); | |
2126 | PL_min_intro_pending = 0; | |
2127 | SAVEI32(PL_comppad_name_fill); | |
2128 | SAVEI32(PL_padix_floor); | |
2129 | PL_padix_floor = PL_padix; | |
2130 | PL_pad_reset_pending = FALSE; | |
b3ac6de7 | 2131 | SAVEHINTS(); |
3280af22 | 2132 | PL_hints &= ~HINT_BLOCK_SCOPE; |
1c846c1f | 2133 | SAVESPTR(PL_compiling.cop_warnings); |
0453d815 | 2134 | if (! specialWARN(PL_compiling.cop_warnings)) { |
599cee73 PM |
2135 | PL_compiling.cop_warnings = newSVsv(PL_compiling.cop_warnings) ; |
2136 | SAVEFREESV(PL_compiling.cop_warnings) ; | |
2137 | } | |
ac27b0f5 NIS |
2138 | SAVESPTR(PL_compiling.cop_io); |
2139 | if (! specialCopIO(PL_compiling.cop_io)) { | |
2140 | PL_compiling.cop_io = newSVsv(PL_compiling.cop_io) ; | |
2141 | SAVEFREESV(PL_compiling.cop_io) ; | |
2142 | } | |
a0d0e21e LW |
2143 | return retval; |
2144 | } | |
2145 | ||
2146 | OP* | |
864dbfa3 | 2147 | Perl_block_end(pTHX_ I32 floor, OP *seq) |
a0d0e21e | 2148 | { |
3280af22 | 2149 | int needblockscope = PL_hints & HINT_BLOCK_SCOPE; |
a0d0e21e | 2150 | OP* retval = scalarseq(seq); |
a0d0e21e | 2151 | LEAVE_SCOPE(floor); |
3280af22 | 2152 | PL_pad_reset_pending = FALSE; |
e24b16f9 | 2153 | PL_compiling.op_private = PL_hints; |
a0d0e21e | 2154 | if (needblockscope) |
3280af22 NIS |
2155 | PL_hints |= HINT_BLOCK_SCOPE; /* propagate out */ |
2156 | pad_leavemy(PL_comppad_name_fill); | |
2157 | PL_cop_seqmax++; | |
a0d0e21e LW |
2158 | return retval; |
2159 | } | |
2160 | ||
76e3520e | 2161 | STATIC OP * |
cea2e8a9 | 2162 | S_newDEFSVOP(pTHX) |
54b9620d MB |
2163 | { |
2164 | #ifdef USE_THREADS | |
2165 | OP *o = newOP(OP_THREADSV, 0); | |
2166 | o->op_targ = find_threadsv("_"); | |
2167 | return o; | |
2168 | #else | |
3280af22 | 2169 | return newSVREF(newGVOP(OP_GV, 0, PL_defgv)); |
54b9620d MB |
2170 | #endif /* USE_THREADS */ |
2171 | } | |
2172 | ||
a0d0e21e | 2173 | void |
864dbfa3 | 2174 | Perl_newPROG(pTHX_ OP *o) |
a0d0e21e | 2175 | { |
3280af22 | 2176 | if (PL_in_eval) { |
b295d113 TH |
2177 | if (PL_eval_root) |
2178 | return; | |
faef0170 HS |
2179 | PL_eval_root = newUNOP(OP_LEAVEEVAL, |
2180 | ((PL_in_eval & EVAL_KEEPERR) | |
2181 | ? OPf_SPECIAL : 0), o); | |
3280af22 | 2182 | PL_eval_start = linklist(PL_eval_root); |
7934575e GS |
2183 | PL_eval_root->op_private |= OPpREFCOUNTED; |
2184 | OpREFCNT_set(PL_eval_root, 1); | |
3280af22 NIS |
2185 | PL_eval_root->op_next = 0; |
2186 | peep(PL_eval_start); | |
a0d0e21e LW |
2187 | } |
2188 | else { | |
5dc0d613 | 2189 | if (!o) |
a0d0e21e | 2190 | return; |
3280af22 NIS |
2191 | PL_main_root = scope(sawparens(scalarvoid(o))); |
2192 | PL_curcop = &PL_compiling; | |
2193 | PL_main_start = LINKLIST(PL_main_root); | |
7934575e GS |
2194 | PL_main_root->op_private |= OPpREFCOUNTED; |
2195 | OpREFCNT_set(PL_main_root, 1); | |
3280af22 NIS |
2196 | PL_main_root->op_next = 0; |
2197 | peep(PL_main_start); | |
2198 | PL_compcv = 0; | |
3841441e | 2199 | |
4fdae800 | 2200 | /* Register with debugger */ |
84902520 | 2201 | if (PERLDB_INTER) { |
864dbfa3 | 2202 | CV *cv = get_cv("DB::postponed", FALSE); |
3841441e CS |
2203 | if (cv) { |
2204 | dSP; | |
924508f0 | 2205 | PUSHMARK(SP); |
cc49e20b | 2206 | XPUSHs((SV*)CopFILEGV(&PL_compiling)); |
3841441e | 2207 | PUTBACK; |
864dbfa3 | 2208 | call_sv((SV*)cv, G_DISCARD); |
3841441e CS |
2209 | } |
2210 | } | |
79072805 | 2211 | } |
79072805 LW |
2212 | } |
2213 | ||
2214 | OP * | |
864dbfa3 | 2215 | Perl_localize(pTHX_ OP *o, I32 lex) |
79072805 LW |
2216 | { |
2217 | if (o->op_flags & OPf_PARENS) | |
2218 | list(o); | |
8990e307 | 2219 | else { |
599cee73 | 2220 | if (ckWARN(WARN_PARENTHESIS) && PL_bufptr > PL_oldbufptr && PL_bufptr[-1] == ',') { |
8990e307 | 2221 | char *s; |
fd400ab9 | 2222 | for (s = PL_bufptr; *s && (isALNUM(*s) || UTF8_IS_CONTINUED(*s) || strchr("@$%, ",*s)); s++) ; |
a0d0e21e | 2223 | if (*s == ';' || *s == '=') |
eb64745e GS |
2224 | Perl_warner(aTHX_ WARN_PARENTHESIS, |
2225 | "Parentheses missing around \"%s\" list", | |
2226 | lex ? (PL_in_my == KEY_our ? "our" : "my") : "local"); | |
8990e307 LW |
2227 | } |
2228 | } | |
93a17b20 | 2229 | if (lex) |
eb64745e | 2230 | o = my(o); |
93a17b20 | 2231 | else |
eb64745e GS |
2232 | o = mod(o, OP_NULL); /* a bit kludgey */ |
2233 | PL_in_my = FALSE; | |
2234 | PL_in_my_stash = Nullhv; | |
2235 | return o; | |
79072805 LW |
2236 | } |
2237 | ||
2238 | OP * | |
864dbfa3 | 2239 | Perl_jmaybe(pTHX_ OP *o) |
79072805 LW |
2240 | { |
2241 | if (o->op_type == OP_LIST) { | |
554b3eca MB |
2242 | OP *o2; |
2243 | #ifdef USE_THREADS | |
2faa37cc | 2244 | o2 = newOP(OP_THREADSV, 0); |
54b9620d | 2245 | o2->op_targ = find_threadsv(";"); |
554b3eca MB |
2246 | #else |
2247 | o2 = newSVREF(newGVOP(OP_GV, 0, gv_fetchpv(";", TRUE, SVt_PV))), | |
2248 | #endif /* USE_THREADS */ | |
2249 | o = convert(OP_JOIN, 0, prepend_elem(OP_LIST, o2, o)); | |
79072805 LW |
2250 | } |
2251 | return o; | |
2252 | } | |
2253 | ||
2254 | OP * | |
864dbfa3 | 2255 | Perl_fold_constants(pTHX_ register OP *o) |
79072805 LW |
2256 | { |
2257 | register OP *curop; | |
2258 | I32 type = o->op_type; | |
748a9306 | 2259 | SV *sv; |
79072805 | 2260 | |
22c35a8c | 2261 | if (PL_opargs[type] & OA_RETSCALAR) |
79072805 | 2262 | scalar(o); |
b162f9ea | 2263 | if (PL_opargs[type] & OA_TARGET && !o->op_targ) |
ed6116ce | 2264 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 | 2265 | |
eac055e9 GS |
2266 | /* integerize op, unless it happens to be C<-foo>. |
2267 | * XXX should pp_i_negate() do magic string negation instead? */ | |
2268 | if ((PL_opargs[type] & OA_OTHERINT) && (PL_hints & HINT_INTEGER) | |
2269 | && !(type == OP_NEGATE && cUNOPo->op_first->op_type == OP_CONST | |
2270 | && (cUNOPo->op_first->op_private & OPpCONST_BARE))) | |
2271 | { | |
22c35a8c | 2272 | o->op_ppaddr = PL_ppaddr[type = ++(o->op_type)]; |
eac055e9 | 2273 | } |
85e6fe83 | 2274 | |
22c35a8c | 2275 | if (!(PL_opargs[type] & OA_FOLDCONST)) |
79072805 LW |
2276 | goto nope; |
2277 | ||
de939608 | 2278 | switch (type) { |
7a52d87a GS |
2279 | case OP_NEGATE: |
2280 | /* XXX might want a ck_negate() for this */ | |
2281 | cUNOPo->op_first->op_private &= ~OPpCONST_STRICT; | |
2282 | break; | |
de939608 CS |
2283 | case OP_SPRINTF: |
2284 | case OP_UCFIRST: | |
2285 | case OP_LCFIRST: | |
2286 | case OP_UC: | |
2287 | case OP_LC: | |
69dcf70c MB |
2288 | case OP_SLT: |
2289 | case OP_SGT: | |
2290 | case OP_SLE: | |
2291 | case OP_SGE: | |
2292 | case OP_SCMP: | |
2293 | ||
de939608 CS |
2294 | if (o->op_private & OPpLOCALE) |
2295 | goto nope; | |
2296 | } | |
2297 | ||
3280af22 | 2298 | if (PL_error_count) |
a0d0e21e LW |
2299 | goto nope; /* Don't try to run w/ errors */ |
2300 | ||
79072805 | 2301 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
11fa937b GS |
2302 | if ((curop->op_type != OP_CONST || |
2303 | (curop->op_private & OPpCONST_BARE)) && | |
7a52d87a GS |
2304 | curop->op_type != OP_LIST && |
2305 | curop->op_type != OP_SCALAR && | |
2306 | curop->op_type != OP_NULL && | |
2307 | curop->op_type != OP_PUSHMARK) | |
2308 | { | |
79072805 LW |
2309 | goto nope; |
2310 | } | |
2311 | } | |
2312 | ||
2313 | curop = LINKLIST(o); | |
2314 | o->op_next = 0; | |
533c011a | 2315 | PL_op = curop; |
cea2e8a9 | 2316 | CALLRUNOPS(aTHX); |
3280af22 | 2317 | sv = *(PL_stack_sp--); |
748a9306 | 2318 | if (o->op_targ && sv == PAD_SV(o->op_targ)) /* grab pad temp? */ |
79072805 | 2319 | pad_swipe(o->op_targ); |
748a9306 LW |
2320 | else if (SvTEMP(sv)) { /* grab mortal temp? */ |
2321 | (void)SvREFCNT_inc(sv); | |
2322 | SvTEMP_off(sv); | |
85e6fe83 | 2323 | } |
79072805 LW |
2324 | op_free(o); |
2325 | if (type == OP_RV2GV) | |
b1cb66bf | 2326 | return newGVOP(OP_GV, 0, (GV*)sv); |
748a9306 | 2327 | else { |
ee580363 GS |
2328 | /* try to smush double to int, but don't smush -2.0 to -2 */ |
2329 | if ((SvFLAGS(sv) & (SVf_IOK|SVf_NOK|SVf_POK)) == SVf_NOK && | |
2330 | type != OP_NEGATE) | |
2331 | { | |
28e5dec8 JH |
2332 | #ifdef PERL_PRESERVE_IVUV |
2333 | /* Only bother to attempt to fold to IV if | |
2334 | most operators will benefit */ | |
2335 | SvIV_please(sv); | |
2336 | #endif | |
748a9306 LW |
2337 | } |
2338 | return newSVOP(OP_CONST, 0, sv); | |
2339 | } | |
aeea060c | 2340 | |
79072805 | 2341 | nope: |
22c35a8c | 2342 | if (!(PL_opargs[type] & OA_OTHERINT)) |
79072805 | 2343 | return o; |
79072805 | 2344 | |
3280af22 | 2345 | if (!(PL_hints & HINT_INTEGER)) { |
4bb9f687 GS |
2346 | if (type == OP_MODULO |
2347 | || type == OP_DIVIDE | |
2348 | || !(o->op_flags & OPf_KIDS)) | |
2349 | { | |
85e6fe83 | 2350 | return o; |
4bb9f687 | 2351 | } |
85e6fe83 LW |
2352 | |
2353 | for (curop = ((UNOP*)o)->op_first; curop; curop = curop->op_sibling) { | |
2354 | if (curop->op_type == OP_CONST) { | |
b1cb66bf | 2355 | if (SvIOK(((SVOP*)curop)->op_sv)) |
85e6fe83 LW |
2356 | continue; |
2357 | return o; | |
2358 | } | |
22c35a8c | 2359 | if (PL_opargs[curop->op_type] & OA_RETINTEGER) |
79072805 LW |
2360 | continue; |
2361 | return o; | |
2362 | } | |
22c35a8c | 2363 | o->op_ppaddr = PL_ppaddr[++(o->op_type)]; |
79072805 LW |
2364 | } |
2365 | ||
79072805 LW |
2366 | return o; |
2367 | } | |
2368 | ||
2369 | OP * | |
864dbfa3 | 2370 | Perl_gen_constant_list(pTHX_ register OP *o) |
79072805 LW |
2371 | { |
2372 | register OP *curop; | |
3280af22 | 2373 | I32 oldtmps_floor = PL_tmps_floor; |
79072805 | 2374 | |
a0d0e21e | 2375 | list(o); |
3280af22 | 2376 | if (PL_error_count) |
a0d0e21e LW |
2377 | return o; /* Don't attempt to run with errors */ |
2378 | ||
533c011a | 2379 | PL_op = curop = LINKLIST(o); |
a0d0e21e | 2380 | o->op_next = 0; |
7d4045d4 | 2381 | peep(curop); |
cea2e8a9 GS |
2382 | pp_pushmark(); |
2383 | CALLRUNOPS(aTHX); | |
533c011a | 2384 | PL_op = curop; |
cea2e8a9 | 2385 | pp_anonlist(); |
3280af22 | 2386 | PL_tmps_floor = oldtmps_floor; |
79072805 LW |
2387 | |
2388 | o->op_type = OP_RV2AV; | |
22c35a8c | 2389 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
79072805 | 2390 | curop = ((UNOP*)o)->op_first; |
3280af22 | 2391 | ((UNOP*)o)->op_first = newSVOP(OP_CONST, 0, SvREFCNT_inc(*PL_stack_sp--)); |
79072805 | 2392 | op_free(curop); |
79072805 LW |
2393 | linklist(o); |
2394 | return list(o); | |
2395 | } | |
2396 | ||
2397 | OP * | |
864dbfa3 | 2398 | Perl_convert(pTHX_ I32 type, I32 flags, OP *o) |
79072805 | 2399 | { |
11343788 MB |
2400 | if (!o || o->op_type != OP_LIST) |
2401 | o = newLISTOP(OP_LIST, 0, o, Nullop); | |
748a9306 | 2402 | else |
5dc0d613 | 2403 | o->op_flags &= ~OPf_WANT; |
79072805 | 2404 | |
22c35a8c | 2405 | if (!(PL_opargs[type] & OA_MARK)) |
11343788 | 2406 | null(cLISTOPo->op_first); |
8990e307 | 2407 | |
11343788 | 2408 | o->op_type = type; |
22c35a8c | 2409 | o->op_ppaddr = PL_ppaddr[type]; |
11343788 | 2410 | o->op_flags |= flags; |
79072805 | 2411 | |
11343788 MB |
2412 | o = CHECKOP(type, o); |
2413 | if (o->op_type != type) | |
2414 | return o; | |
79072805 | 2415 | |
11343788 | 2416 | return fold_constants(o); |
79072805 LW |
2417 | } |
2418 | ||
2419 | /* List constructors */ | |
2420 | ||
2421 | OP * | |
864dbfa3 | 2422 | Perl_append_elem(pTHX_ I32 type, OP *first, OP *last) |
79072805 LW |
2423 | { |
2424 | if (!first) | |
2425 | return last; | |
8990e307 LW |
2426 | |
2427 | if (!last) | |
79072805 | 2428 | return first; |
8990e307 | 2429 | |
155aba94 GS |
2430 | if (first->op_type != type |
2431 | || (type == OP_LIST && (first->op_flags & OPf_PARENS))) | |
2432 | { | |
2433 | return newLISTOP(type, 0, first, last); | |
2434 | } | |
79072805 | 2435 | |
a0d0e21e LW |
2436 | if (first->op_flags & OPf_KIDS) |
2437 | ((LISTOP*)first)->op_last->op_sibling = last; | |
2438 | else { | |
2439 | first->op_flags |= OPf_KIDS; | |
2440 | ((LISTOP*)first)->op_first = last; | |
2441 | } | |
2442 | ((LISTOP*)first)->op_last = last; | |
a0d0e21e | 2443 | return first; |
79072805 LW |
2444 | } |
2445 | ||
2446 | OP * | |
864dbfa3 | 2447 | Perl_append_list(pTHX_ I32 type, LISTOP *first, LISTOP *last) |
79072805 LW |
2448 | { |
2449 | if (!first) | |
2450 | return (OP*)last; | |
8990e307 LW |
2451 | |
2452 | if (!last) | |
79072805 | 2453 | return (OP*)first; |
8990e307 LW |
2454 | |
2455 | if (first->op_type != type) | |
79072805 | 2456 | return prepend_elem(type, (OP*)first, (OP*)last); |
8990e307 LW |
2457 | |
2458 | if (last->op_type != type) | |
79072805 LW |
2459 | return append_elem(type, (OP*)first, (OP*)last); |
2460 | ||
2461 | first->op_last->op_sibling = last->op_first; | |
2462 | first->op_last = last->op_last; | |
117dada2 | 2463 | first->op_flags |= (last->op_flags & OPf_KIDS); |
1c846c1f | 2464 | |
b7dc083c NIS |
2465 | #ifdef PL_OP_SLAB_ALLOC |
2466 | #else | |
1c846c1f | 2467 | Safefree(last); |
b7dc083c | 2468 | #endif |
79072805 LW |
2469 | return (OP*)first; |
2470 | } | |
2471 | ||
2472 | OP * | |
864dbfa3 | 2473 | Perl_prepend_elem(pTHX_ I32 type, OP *first, OP *last) |
79072805 LW |
2474 | { |
2475 | if (!first) | |
2476 | return last; | |
8990e307 LW |
2477 | |
2478 | if (!last) | |
79072805 | 2479 | return first; |
8990e307 LW |
2480 | |
2481 | if (last->op_type == type) { | |
2482 | if (type == OP_LIST) { /* already a PUSHMARK there */ | |
2483 | first->op_sibling = ((LISTOP*)last)->op_first->op_sibling; | |
2484 | ((LISTOP*)last)->op_first->op_sibling = first; | |
36a5d4ba DC |
2485 | if (!(first->op_flags & OPf_PARENS)) |
2486 | last->op_flags &= ~OPf_PARENS; | |
8990e307 LW |
2487 | } |
2488 | else { | |
2489 | if (!(last->op_flags & OPf_KIDS)) { | |
2490 | ((LISTOP*)last)->op_last = first; | |
2491 | last->op_flags |= OPf_KIDS; | |
2492 | } | |
2493 | first->op_sibling = ((LISTOP*)last)->op_first; | |
2494 | ((LISTOP*)last)->op_first = first; | |
79072805 | 2495 | } |
117dada2 | 2496 | last->op_flags |= OPf_KIDS; |
79072805 LW |
2497 | return last; |
2498 | } | |
2499 | ||
2500 | return newLISTOP(type, 0, first, last); | |
2501 | } | |
2502 | ||
2503 | /* Constructors */ | |
2504 | ||
2505 | OP * | |
864dbfa3 | 2506 | Perl_newNULLLIST(pTHX) |
79072805 | 2507 | { |
8990e307 LW |
2508 | return newOP(OP_STUB, 0); |
2509 | } | |
2510 | ||
2511 | OP * | |
864dbfa3 | 2512 | Perl_force_list(pTHX_ OP *o) |
8990e307 | 2513 | { |
11343788 MB |
2514 | if (!o || o->op_type != OP_LIST) |
2515 | o = newLISTOP(OP_LIST, 0, o, Nullop); | |
2516 | null(o); | |
2517 | return o; | |
79072805 LW |
2518 | } |
2519 | ||
2520 | OP * | |
864dbfa3 | 2521 | Perl_newLISTOP(pTHX_ I32 type, I32 flags, OP *first, OP *last) |
79072805 LW |
2522 | { |
2523 | LISTOP *listop; | |
2524 | ||
b7dc083c | 2525 | NewOp(1101, listop, 1, LISTOP); |
79072805 LW |
2526 | |
2527 | listop->op_type = type; | |
22c35a8c | 2528 | listop->op_ppaddr = PL_ppaddr[type]; |
117dada2 SM |
2529 | if (first || last) |
2530 | flags |= OPf_KIDS; | |
79072805 | 2531 | listop->op_flags = flags; |
79072805 LW |
2532 | |
2533 | if (!last && first) | |
2534 | last = first; | |
2535 | else if (!first && last) | |
2536 | first = last; | |
8990e307 LW |
2537 | else if (first) |
2538 | first->op_sibling = last; | |
79072805 LW |
2539 | listop->op_first = first; |
2540 | listop->op_last = last; | |
8990e307 LW |
2541 | if (type == OP_LIST) { |
2542 | OP* pushop; | |
2543 | pushop = newOP(OP_PUSHMARK, 0); | |
2544 | pushop->op_sibling = first; | |
2545 | listop->op_first = pushop; | |
2546 | listop->op_flags |= OPf_KIDS; | |
2547 | if (!last) | |
2548 | listop->op_last = pushop; | |
2549 | } | |
79072805 LW |
2550 | |
2551 | return (OP*)listop; | |
2552 | } | |
2553 | ||
2554 | OP * | |
864dbfa3 | 2555 | Perl_newOP(pTHX_ I32 type, I32 flags) |
79072805 | 2556 | { |
11343788 | 2557 | OP *o; |
b7dc083c | 2558 | NewOp(1101, o, 1, OP); |
11343788 | 2559 | o->op_type = type; |
22c35a8c | 2560 | o->op_ppaddr = PL_ppaddr[type]; |
11343788 | 2561 | o->op_flags = flags; |
79072805 | 2562 | |
11343788 MB |
2563 | o->op_next = o; |
2564 | o->op_private = 0 + (flags >> 8); | |
22c35a8c | 2565 | if (PL_opargs[type] & OA_RETSCALAR) |
11343788 | 2566 | scalar(o); |
22c35a8c | 2567 | if (PL_opargs[type] & OA_TARGET) |
11343788 MB |
2568 | o->op_targ = pad_alloc(type, SVs_PADTMP); |
2569 | return CHECKOP(type, o); | |
79072805 LW |
2570 | } |
2571 | ||
2572 | OP * | |
864dbfa3 | 2573 | Perl_newUNOP(pTHX_ I32 type, I32 flags, OP *first) |
79072805 LW |
2574 | { |
2575 | UNOP *unop; | |
2576 | ||
93a17b20 | 2577 | if (!first) |
aeea060c | 2578 | first = newOP(OP_STUB, 0); |
22c35a8c | 2579 | if (PL_opargs[type] & OA_MARK) |
8990e307 | 2580 | first = force_list(first); |
93a17b20 | 2581 | |
b7dc083c | 2582 | NewOp(1101, unop, 1, UNOP); |
79072805 | 2583 | unop->op_type = type; |
22c35a8c | 2584 | unop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2585 | unop->op_first = first; |
2586 | unop->op_flags = flags | OPf_KIDS; | |
c07a80fd | 2587 | unop->op_private = 1 | (flags >> 8); |
e50aee73 | 2588 | unop = (UNOP*) CHECKOP(type, unop); |
79072805 LW |
2589 | if (unop->op_next) |
2590 | return (OP*)unop; | |
2591 | ||
a0d0e21e | 2592 | return fold_constants((OP *) unop); |
79072805 LW |
2593 | } |
2594 | ||
2595 | OP * | |
864dbfa3 | 2596 | Perl_newBINOP(pTHX_ I32 type, I32 flags, OP *first, OP *last) |
79072805 LW |
2597 | { |
2598 | BINOP *binop; | |
b7dc083c | 2599 | NewOp(1101, binop, 1, BINOP); |
79072805 LW |
2600 | |
2601 | if (!first) | |
2602 | first = newOP(OP_NULL, 0); | |
2603 | ||
2604 | binop->op_type = type; | |
22c35a8c | 2605 | binop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
2606 | binop->op_first = first; |
2607 | binop->op_flags = flags | OPf_KIDS; | |
2608 | if (!last) { | |
2609 | last = first; | |
c07a80fd | 2610 | binop->op_private = 1 | (flags >> 8); |
79072805 LW |
2611 | } |
2612 | else { | |
c07a80fd | 2613 | binop->op_private = 2 | (flags >> 8); |
79072805 LW |
2614 | first->op_sibling = last; |
2615 | } | |
2616 | ||
e50aee73 | 2617 | binop = (BINOP*)CHECKOP(type, binop); |
b162f9ea | 2618 | if (binop->op_next || binop->op_type != type) |
79072805 LW |
2619 | return (OP*)binop; |
2620 | ||
7284ab6f | 2621 | binop->op_last = binop->op_first->op_sibling; |
79072805 | 2622 | |
a0d0e21e | 2623 | return fold_constants((OP *)binop); |
79072805 LW |
2624 | } |
2625 | ||
a0ed51b3 | 2626 | static int |
2b9d42f0 NIS |
2627 | uvcompare(const void *a, const void *b) |
2628 | { | |
2629 | if (*((UV *)a) < (*(UV *)b)) | |
2630 | return -1; | |
2631 | if (*((UV *)a) > (*(UV *)b)) | |
2632 | return 1; | |
2633 | if (*((UV *)a+1) < (*(UV *)b+1)) | |
2634 | return -1; | |
2635 | if (*((UV *)a+1) > (*(UV *)b+1)) | |
2636 | return 1; | |
a0ed51b3 LW |
2637 | return 0; |
2638 | } | |
2639 | ||
79072805 | 2640 | OP * |
864dbfa3 | 2641 | Perl_pmtrans(pTHX_ OP *o, OP *expr, OP *repl) |
79072805 | 2642 | { |
79072805 LW |
2643 | SV *tstr = ((SVOP*)expr)->op_sv; |
2644 | SV *rstr = ((SVOP*)repl)->op_sv; | |
463ee0b2 LW |
2645 | STRLEN tlen; |
2646 | STRLEN rlen; | |
9b877dbb IH |
2647 | U8 *t = (U8*)SvPV(tstr, tlen); |
2648 | U8 *r = (U8*)SvPV(rstr, rlen); | |
79072805 LW |
2649 | register I32 i; |
2650 | register I32 j; | |
a0ed51b3 | 2651 | I32 del; |
79072805 | 2652 | I32 complement; |
5d06d08e | 2653 | I32 squash; |
9b877dbb | 2654 | I32 grows = 0; |
79072805 LW |
2655 | register short *tbl; |
2656 | ||
800b4dc4 | 2657 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 2658 | complement = o->op_private & OPpTRANS_COMPLEMENT; |
a0ed51b3 | 2659 | del = o->op_private & OPpTRANS_DELETE; |
5d06d08e | 2660 | squash = o->op_private & OPpTRANS_SQUASH; |
1c846c1f | 2661 | |
036b4402 GS |
2662 | if (SvUTF8(tstr)) |
2663 | o->op_private |= OPpTRANS_FROM_UTF; | |
1c846c1f NIS |
2664 | |
2665 | if (SvUTF8(rstr)) | |
036b4402 | 2666 | o->op_private |= OPpTRANS_TO_UTF; |
79072805 | 2667 | |
a0ed51b3 | 2668 | if (o->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) { |
79cb57f6 | 2669 | SV* listsv = newSVpvn("# comment\n",10); |
a0ed51b3 LW |
2670 | SV* transv = 0; |
2671 | U8* tend = t + tlen; | |
2672 | U8* rend = r + rlen; | |
ba210ebe | 2673 | STRLEN ulen; |
a0ed51b3 LW |
2674 | U32 tfirst = 1; |
2675 | U32 tlast = 0; | |
2676 | I32 tdiff; | |
2677 | U32 rfirst = 1; | |
2678 | U32 rlast = 0; | |
2679 | I32 rdiff; | |
2680 | I32 diff; | |
2681 | I32 none = 0; | |
2682 | U32 max = 0; | |
2683 | I32 bits; | |
a0ed51b3 LW |
2684 | I32 havefinal = 0; |
2685 | U32 final; | |
a0ed51b3 LW |
2686 | I32 from_utf = o->op_private & OPpTRANS_FROM_UTF; |
2687 | I32 to_utf = o->op_private & OPpTRANS_TO_UTF; | |
bf4a1e57 JH |
2688 | U8* tsave = NULL; |
2689 | U8* rsave = NULL; | |
2690 | ||
2691 | if (!from_utf) { | |
2692 | STRLEN len = tlen; | |
2693 | tsave = t = bytes_to_utf8(t, &len); | |
2694 | tend = t + len; | |
2695 | } | |
2696 | if (!to_utf && rlen) { | |
2697 | STRLEN len = rlen; | |
2698 | rsave = r = bytes_to_utf8(r, &len); | |
2699 | rend = r + len; | |
2700 | } | |
a0ed51b3 | 2701 | |
2b9d42f0 NIS |
2702 | /* There are several snags with this code on EBCDIC: |
2703 | 1. 0xFF is a legal UTF-EBCDIC byte (there are no illegal bytes). | |
2704 | 2. scan_const() in toke.c has encoded chars in native encoding which makes | |
2705 | ranges at least in EBCDIC 0..255 range the bottom odd. | |
2706 | */ | |
2707 | ||
a0ed51b3 | 2708 | if (complement) { |
ad391ad9 | 2709 | U8 tmpbuf[UTF8_MAXLEN+1]; |
2b9d42f0 | 2710 | UV *cp; |
a0ed51b3 | 2711 | UV nextmin = 0; |
2b9d42f0 | 2712 | New(1109, cp, 2*tlen, UV); |
a0ed51b3 | 2713 | i = 0; |
79cb57f6 | 2714 | transv = newSVpvn("",0); |
a0ed51b3 | 2715 | while (t < tend) { |
2b9d42f0 NIS |
2716 | cp[2*i] = utf8n_to_uvuni(t, tend-t, &ulen, 0); |
2717 | t += ulen; | |
2718 | if (t < tend && NATIVE_TO_UTF(*t) == 0xff) { | |
a0ed51b3 | 2719 | t++; |
2b9d42f0 NIS |
2720 | cp[2*i+1] = utf8n_to_uvuni(t, tend-t, &ulen, 0); |
2721 | t += ulen; | |
a0ed51b3 | 2722 | } |
2b9d42f0 NIS |
2723 | else { |
2724 | cp[2*i+1] = cp[2*i]; | |
2725 | } | |
2726 | i++; | |
a0ed51b3 | 2727 | } |
2b9d42f0 | 2728 | qsort(cp, i, 2*sizeof(UV), uvcompare); |
a0ed51b3 | 2729 | for (j = 0; j < i; j++) { |
2b9d42f0 | 2730 | UV val = cp[2*j]; |
a0ed51b3 LW |
2731 | diff = val - nextmin; |
2732 | if (diff > 0) { | |
9041c2e3 | 2733 | t = uvuni_to_utf8(tmpbuf,nextmin); |
dfe13c55 | 2734 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 | 2735 | if (diff > 1) { |
2b9d42f0 | 2736 | U8 range_mark = UTF_TO_NATIVE(0xff); |
9041c2e3 | 2737 | t = uvuni_to_utf8(tmpbuf, val - 1); |
2b9d42f0 | 2738 | sv_catpvn(transv, (char *)&range_mark, 1); |
dfe13c55 | 2739 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
a0ed51b3 LW |
2740 | } |
2741 | } | |
2b9d42f0 | 2742 | val = cp[2*j+1]; |
a0ed51b3 LW |
2743 | if (val >= nextmin) |
2744 | nextmin = val + 1; | |
2745 | } | |
9041c2e3 | 2746 | t = uvuni_to_utf8(tmpbuf,nextmin); |
dfe13c55 | 2747 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
2b9d42f0 NIS |
2748 | { |
2749 | U8 range_mark = UTF_TO_NATIVE(0xff); | |
2750 | sv_catpvn(transv, (char *)&range_mark, 1); | |
2751 | } | |
9041c2e3 | 2752 | t = uvuni_to_utf8(tmpbuf, 0x7fffffff); |
dfe13c55 GS |
2753 | sv_catpvn(transv, (char*)tmpbuf, t - tmpbuf); |
2754 | t = (U8*)SvPVX(transv); | |
a0ed51b3 LW |
2755 | tlen = SvCUR(transv); |
2756 | tend = t + tlen; | |
455d824a | 2757 | Safefree(cp); |
a0ed51b3 LW |
2758 | } |
2759 | else if (!rlen && !del) { | |
2760 | r = t; rlen = tlen; rend = tend; | |
4757a243 LW |
2761 | } |
2762 | if (!squash) { | |
05d340b8 | 2763 | if ((!rlen && !del) || t == r || |
12ae5dfc | 2764 | (tlen == rlen && memEQ((char *)t, (char *)r, tlen))) |
01ec43d0 | 2765 | { |
4757a243 | 2766 | o->op_private |= OPpTRANS_IDENTICAL; |
01ec43d0 | 2767 | } |
a0ed51b3 LW |
2768 | } |
2769 | ||
2770 | while (t < tend || tfirst <= tlast) { | |
2771 | /* see if we need more "t" chars */ | |
2772 | if (tfirst > tlast) { | |
9041c2e3 | 2773 | tfirst = (I32)utf8n_to_uvuni(t, tend - t, &ulen, 0); |
a0ed51b3 | 2774 | t += ulen; |
2b9d42f0 | 2775 | if (t < tend && NATIVE_TO_UTF(*t) == 0xff) { /* illegal utf8 val indicates range */ |
ba210ebe | 2776 | t++; |
9041c2e3 | 2777 | tlast = (I32)utf8n_to_uvuni(t, tend - t, &ulen, 0); |
a0ed51b3 LW |
2778 | t += ulen; |
2779 | } | |
2780 | else | |
2781 | tlast = tfirst; | |
2782 | } | |
2783 | ||
2784 | /* now see if we need more "r" chars */ | |
2785 | if (rfirst > rlast) { | |
2786 | if (r < rend) { | |
9041c2e3 | 2787 | rfirst = (I32)utf8n_to_uvuni(r, rend - r, &ulen, 0); |
a0ed51b3 | 2788 | r += ulen; |
2b9d42f0 | 2789 | if (r < rend && NATIVE_TO_UTF(*r) == 0xff) { /* illegal utf8 val indicates range */ |
ba210ebe | 2790 | r++; |
9041c2e3 | 2791 | rlast = (I32)utf8n_to_uvuni(r, rend - r, &ulen, 0); |
a0ed51b3 LW |
2792 | r += ulen; |
2793 | } | |
2794 | else | |
2795 | rlast = rfirst; | |
2796 | } | |
2797 | else { | |
2798 | if (!havefinal++) | |
2799 | final = rlast; | |
2800 | rfirst = rlast = 0xffffffff; | |
2801 | } | |
2802 | } | |
2803 | ||
2804 | /* now see which range will peter our first, if either. */ | |
2805 | tdiff = tlast - tfirst; | |
2806 | rdiff = rlast - rfirst; | |
2807 | ||
2808 | if (tdiff <= rdiff) | |
2809 | diff = tdiff; | |
2810 | else | |
2811 | diff = rdiff; | |
2812 | ||
2813 | if (rfirst == 0xffffffff) { | |
2814 | diff = tdiff; /* oops, pretend rdiff is infinite */ | |
2815 | if (diff > 0) | |
894356b3 GS |
2816 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t%04lx\tXXXX\n", |
2817 | (long)tfirst, (long)tlast); | |
a0ed51b3 | 2818 | else |
894356b3 | 2819 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t\tXXXX\n", (long)tfirst); |
a0ed51b3 LW |
2820 | } |
2821 | else { | |
2822 | if (diff > 0) | |
894356b3 GS |
2823 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t%04lx\t%04lx\n", |
2824 | (long)tfirst, (long)(tfirst + diff), | |
2825 | (long)rfirst); | |
a0ed51b3 | 2826 | else |
894356b3 GS |
2827 | Perl_sv_catpvf(aTHX_ listsv, "%04lx\t\t%04lx\n", |
2828 | (long)tfirst, (long)rfirst); | |
a0ed51b3 LW |
2829 | |
2830 | if (rfirst + diff > max) | |
2831 | max = rfirst + diff; | |
9b877dbb | 2832 | if (!grows) |
45005bfb JH |
2833 | grows = (tfirst < rfirst && |
2834 | UNISKIP(tfirst) < UNISKIP(rfirst + diff)); | |
2835 | rfirst += diff + 1; | |
a0ed51b3 LW |
2836 | } |
2837 | tfirst += diff + 1; | |
2838 | } | |
2839 | ||
2840 | none = ++max; | |
2841 | if (del) | |
2842 | del = ++max; | |
2843 | ||
2844 | if (max > 0xffff) | |
2845 | bits = 32; | |
2846 | else if (max > 0xff) | |
2847 | bits = 16; | |
2848 | else | |
2849 | bits = 8; | |
2850 | ||
455d824a | 2851 | Safefree(cPVOPo->op_pv); |
a0ed51b3 LW |
2852 | cSVOPo->op_sv = (SV*)swash_init("utf8", "", listsv, bits, none); |
2853 | SvREFCNT_dec(listsv); | |
2854 | if (transv) | |
2855 | SvREFCNT_dec(transv); | |
2856 | ||
45005bfb | 2857 | if (!del && havefinal && rlen) |
b448e4fe JH |
2858 | (void)hv_store((HV*)SvRV((cSVOPo->op_sv)), "FINAL", 5, |
2859 | newSVuv((UV)final), 0); | |
a0ed51b3 | 2860 | |
9b877dbb | 2861 | if (grows) |
a0ed51b3 LW |
2862 | o->op_private |= OPpTRANS_GROWS; |
2863 | ||
9b877dbb IH |
2864 | if (tsave) |
2865 | Safefree(tsave); | |
2866 | if (rsave) | |
2867 | Safefree(rsave); | |
2868 | ||
a0ed51b3 LW |
2869 | op_free(expr); |
2870 | op_free(repl); | |
2871 | return o; | |
2872 | } | |
2873 | ||
2874 | tbl = (short*)cPVOPo->op_pv; | |
79072805 LW |
2875 | if (complement) { |
2876 | Zero(tbl, 256, short); | |
2877 | for (i = 0; i < tlen; i++) | |
ec49126f | 2878 | tbl[t[i]] = -1; |
79072805 LW |
2879 | for (i = 0, j = 0; i < 256; i++) { |
2880 | if (!tbl[i]) { | |
2881 | if (j >= rlen) { | |
a0ed51b3 | 2882 | if (del) |
79072805 LW |
2883 | tbl[i] = -2; |
2884 | else if (rlen) | |
ec49126f | 2885 | tbl[i] = r[j-1]; |
79072805 LW |
2886 | else |
2887 | tbl[i] = i; | |
2888 | } | |
9b877dbb IH |
2889 | else { |
2890 | if (i < 128 && r[j] >= 128) | |
2891 | grows = 1; | |
ec49126f | 2892 | tbl[i] = r[j++]; |
9b877dbb | 2893 | } |
79072805 LW |
2894 | } |
2895 | } | |
05d340b8 JH |
2896 | if (!del) { |
2897 | if (!rlen) { | |
2898 | j = rlen; | |
2899 | if (!squash) | |
2900 | o->op_private |= OPpTRANS_IDENTICAL; | |
2901 | } | |
2902 | else if (j >= rlen) | |
2903 | j = rlen - 1; | |
2904 | else | |
2905 | cPVOPo->op_pv = (char*)Renew(tbl, 0x101+rlen-j, short); | |
8973db79 JH |
2906 | tbl[0x100] = rlen - j; |
2907 | for (i=0; i < rlen - j; i++) | |
2908 | tbl[0x101+i] = r[j+i]; | |
2909 | } | |
79072805 LW |
2910 | } |
2911 | else { | |
a0ed51b3 | 2912 | if (!rlen && !del) { |
79072805 | 2913 | r = t; rlen = tlen; |
5d06d08e | 2914 | if (!squash) |
4757a243 | 2915 | o->op_private |= OPpTRANS_IDENTICAL; |
79072805 LW |
2916 | } |
2917 | for (i = 0; i < 256; i++) | |
2918 | tbl[i] = -1; | |
2919 | for (i = 0, j = 0; i < tlen; i++,j++) { | |
2920 | if (j >= rlen) { | |
a0ed51b3 | 2921 | if (del) { |
ec49126f | 2922 | if (tbl[t[i]] == -1) |
2923 | tbl[t[i]] = -2; | |
79072805 LW |
2924 | continue; |
2925 | } | |
2926 | --j; | |
2927 | } | |
9b877dbb IH |
2928 | if (tbl[t[i]] == -1) { |
2929 | if (t[i] < 128 && r[j] >= 128) | |
2930 | grows = 1; | |
ec49126f | 2931 | tbl[t[i]] = r[j]; |
9b877dbb | 2932 | } |
79072805 LW |
2933 | } |
2934 | } | |
9b877dbb IH |
2935 | if (grows) |
2936 | o->op_private |= OPpTRANS_GROWS; | |
79072805 LW |
2937 | op_free(expr); |
2938 | op_free(repl); | |
2939 | ||
11343788 | 2940 | return o; |
79072805 LW |
2941 | } |
2942 | ||
2943 | OP * | |
864dbfa3 | 2944 | Perl_newPMOP(pTHX_ I32 type, I32 flags) |
79072805 LW |
2945 | { |
2946 | PMOP *pmop; | |
2947 | ||
b7dc083c | 2948 | NewOp(1101, pmop, 1, PMOP); |
79072805 | 2949 | pmop->op_type = type; |
22c35a8c | 2950 | pmop->op_ppaddr = PL_ppaddr[type]; |
79072805 | 2951 | pmop->op_flags = flags; |
c07a80fd | 2952 | pmop->op_private = 0 | (flags >> 8); |
79072805 | 2953 | |
3280af22 | 2954 | if (PL_hints & HINT_RE_TAINT) |
b3eb6a9b | 2955 | pmop->op_pmpermflags |= PMf_RETAINT; |
3280af22 | 2956 | if (PL_hints & HINT_LOCALE) |
b3eb6a9b GS |
2957 | pmop->op_pmpermflags |= PMf_LOCALE; |
2958 | pmop->op_pmflags = pmop->op_pmpermflags; | |
36477c24 | 2959 | |
79072805 | 2960 | /* link into pm list */ |
3280af22 NIS |
2961 | if (type != OP_TRANS && PL_curstash) { |
2962 | pmop->op_pmnext = HvPMROOT(PL_curstash); | |
2963 | HvPMROOT(PL_curstash) = pmop; | |
cb55de95 | 2964 | PmopSTASH_set(pmop,PL_curstash); |
79072805 LW |
2965 | } |
2966 | ||
2967 | return (OP*)pmop; | |
2968 | } | |
2969 | ||
2970 | OP * | |
864dbfa3 | 2971 | Perl_pmruntime(pTHX_ OP *o, OP *expr, OP *repl) |
79072805 LW |
2972 | { |
2973 | PMOP *pm; | |
2974 | LOGOP *rcop; | |
ce862d02 | 2975 | I32 repl_has_vars = 0; |
79072805 | 2976 | |
11343788 MB |
2977 | if (o->op_type == OP_TRANS) |
2978 | return pmtrans(o, expr, repl); | |
79072805 | 2979 | |
3280af22 | 2980 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 2981 | pm = (PMOP*)o; |
79072805 LW |
2982 | |
2983 | if (expr->op_type == OP_CONST) { | |
463ee0b2 | 2984 | STRLEN plen; |
79072805 | 2985 | SV *pat = ((SVOP*)expr)->op_sv; |
463ee0b2 | 2986 | char *p = SvPV(pat, plen); |
11343788 | 2987 | if ((o->op_flags & OPf_SPECIAL) && strEQ(p, " ")) { |
93a17b20 | 2988 | sv_setpvn(pat, "\\s+", 3); |
463ee0b2 | 2989 | p = SvPV(pat, plen); |
79072805 LW |
2990 | pm->op_pmflags |= PMf_SKIPWHITE; |
2991 | } | |
1fd7b382 | 2992 | if ((PL_hints & HINT_UTF8) || DO_UTF8(pat)) |
7e2040f0 | 2993 | pm->op_pmdynflags |= PMdf_UTF8; |
cea2e8a9 | 2994 | pm->op_pmregexp = CALLREGCOMP(aTHX_ p, p + plen, pm); |
aeea060c | 2995 | if (strEQ("\\s+", pm->op_pmregexp->precomp)) |
85e6fe83 | 2996 | pm->op_pmflags |= PMf_WHITE; |
79072805 LW |
2997 | op_free(expr); |
2998 | } | |
2999 | else { | |
393fec97 GS |
3000 | if (PL_hints & HINT_UTF8) |
3001 | pm->op_pmdynflags |= PMdf_UTF8; | |
3280af22 | 3002 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) |
1c846c1f | 3003 | expr = newUNOP((!(PL_hints & HINT_RE_EVAL) |
2cd61cdb IZ |
3004 | ? OP_REGCRESET |
3005 | : OP_REGCMAYBE),0,expr); | |
463ee0b2 | 3006 | |
b7dc083c | 3007 | NewOp(1101, rcop, 1, LOGOP); |
79072805 | 3008 | rcop->op_type = OP_REGCOMP; |
22c35a8c | 3009 | rcop->op_ppaddr = PL_ppaddr[OP_REGCOMP]; |
79072805 | 3010 | rcop->op_first = scalar(expr); |
1c846c1f | 3011 | rcop->op_flags |= ((PL_hints & HINT_RE_EVAL) |
2cd61cdb IZ |
3012 | ? (OPf_SPECIAL | OPf_KIDS) |
3013 | : OPf_KIDS); | |
79072805 | 3014 | rcop->op_private = 1; |
11343788 | 3015 | rcop->op_other = o; |
79072805 LW |
3016 | |
3017 | /* establish postfix order */ | |
3280af22 | 3018 | if (pm->op_pmflags & PMf_KEEP || !(PL_hints & HINT_RE_EVAL)) { |
463ee0b2 LW |
3019 | LINKLIST(expr); |
3020 | rcop->op_next = expr; | |
3021 | ((UNOP*)expr)->op_first->op_next = (OP*)rcop; | |
3022 | } | |
3023 | else { | |
3024 | rcop->op_next = LINKLIST(expr); | |
3025 | expr->op_next = (OP*)rcop; | |
3026 | } | |
79072805 | 3027 | |
11343788 | 3028 | prepend_elem(o->op_type, scalar((OP*)rcop), o); |
79072805 LW |
3029 | } |
3030 | ||
3031 | if (repl) { | |
748a9306 | 3032 | OP *curop; |
0244c3a4 | 3033 | if (pm->op_pmflags & PMf_EVAL) { |
748a9306 | 3034 | curop = 0; |
57843af0 GS |
3035 | if (CopLINE(PL_curcop) < PL_multi_end) |
3036 | CopLINE_set(PL_curcop, PL_multi_end); | |
0244c3a4 | 3037 | } |
554b3eca | 3038 | #ifdef USE_THREADS |
2faa37cc | 3039 | else if (repl->op_type == OP_THREADSV |
554b3eca | 3040 | && strchr("&`'123456789+", |
533c011a | 3041 | PL_threadsv_names[repl->op_targ])) |
554b3eca MB |
3042 | { |
3043 | curop = 0; | |
3044 | } | |
3045 | #endif /* USE_THREADS */ | |
748a9306 LW |
3046 | else if (repl->op_type == OP_CONST) |
3047 | curop = repl; | |
79072805 | 3048 | else { |
79072805 LW |
3049 | OP *lastop = 0; |
3050 | for (curop = LINKLIST(repl); curop!=repl; curop = LINKLIST(curop)) { | |
22c35a8c | 3051 | if (PL_opargs[curop->op_type] & OA_DANGEROUS) { |
554b3eca | 3052 | #ifdef USE_THREADS |
ce862d02 IZ |
3053 | if (curop->op_type == OP_THREADSV) { |
3054 | repl_has_vars = 1; | |
be949f6f | 3055 | if (strchr("&`'123456789+", curop->op_private)) |
ce862d02 | 3056 | break; |
554b3eca MB |
3057 | } |
3058 | #else | |
79072805 | 3059 | if (curop->op_type == OP_GV) { |
638eceb6 | 3060 | GV *gv = cGVOPx_gv(curop); |
ce862d02 | 3061 | repl_has_vars = 1; |
93a17b20 | 3062 | if (strchr("&`'123456789+", *GvENAME(gv))) |
79072805 LW |
3063 | break; |
3064 | } | |
554b3eca | 3065 | #endif /* USE_THREADS */ |
79072805 LW |
3066 | else if (curop->op_type == OP_RV2CV) |
3067 | break; | |
3068 | else if (curop->op_type == OP_RV2SV || | |
3069 | curop->op_type == OP_RV2AV || | |
3070 | curop->op_type == OP_RV2HV || | |
3071 | curop->op_type == OP_RV2GV) { | |
3072 | if (lastop && lastop->op_type != OP_GV) /*funny deref?*/ | |
3073 | break; | |
3074 | } | |
748a9306 LW |
3075 | else if (curop->op_type == OP_PADSV || |
3076 | curop->op_type == OP_PADAV || | |
3077 | curop->op_type == OP_PADHV || | |
554b3eca | 3078 | curop->op_type == OP_PADANY) { |
ce862d02 | 3079 | repl_has_vars = 1; |
748a9306 | 3080 | } |
1167e5da SM |
3081 | else if (curop->op_type == OP_PUSHRE) |
3082 | ; /* Okay here, dangerous in newASSIGNOP */ | |
79072805 LW |
3083 | else |
3084 | break; | |
3085 | } | |
3086 | lastop = curop; | |
3087 | } | |
748a9306 | 3088 | } |
ce862d02 | 3089 | if (curop == repl |
1c846c1f NIS |
3090 | && !(repl_has_vars |
3091 | && (!pm->op_pmregexp | |
ce862d02 | 3092 | || pm->op_pmregexp->reganch & ROPT_EVAL_SEEN))) { |
748a9306 | 3093 | pm->op_pmflags |= PMf_CONST; /* const for long enough */ |
4633a7c4 | 3094 | pm->op_pmpermflags |= PMf_CONST; /* const for long enough */ |
11343788 | 3095 | prepend_elem(o->op_type, scalar(repl), o); |
748a9306 LW |
3096 | } |
3097 | else { | |
ce862d02 IZ |
3098 | if (curop == repl && !pm->op_pmregexp) { /* Has variables. */ |
3099 | pm->op_pmflags |= PMf_MAYBE_CONST; | |
3100 | pm->op_pmpermflags |= PMf_MAYBE_CONST; | |
3101 | } | |
b7dc083c | 3102 | NewOp(1101, rcop, 1, LOGOP); |
748a9306 | 3103 | rcop->op_type = OP_SUBSTCONT; |
22c35a8c | 3104 | rcop->op_ppaddr = PL_ppaddr[OP_SUBSTCONT]; |
748a9306 LW |
3105 | rcop->op_first = scalar(repl); |
3106 | rcop->op_flags |= OPf_KIDS; | |
3107 | rcop->op_private = 1; | |
11343788 | 3108 | rcop->op_other = o; |
748a9306 LW |
3109 | |
3110 | /* establish postfix order */ | |
3111 | rcop->op_next = LINKLIST(repl); | |
3112 | repl->op_next = (OP*)rcop; | |
3113 | ||
3114 | pm->op_pmreplroot = scalar((OP*)rcop); | |
3115 | pm->op_pmreplstart = LINKLIST(rcop); | |
3116 | rcop->op_next = 0; | |
79072805 LW |
3117 | } |
3118 | } | |
3119 | ||
3120 | return (OP*)pm; | |
3121 | } | |
3122 | ||
3123 | OP * | |
864dbfa3 | 3124 | Perl_newSVOP(pTHX_ I32 type, I32 flags, SV *sv) |
79072805 LW |
3125 | { |
3126 | SVOP *svop; | |
b7dc083c | 3127 | NewOp(1101, svop, 1, SVOP); |
79072805 | 3128 | svop->op_type = type; |
22c35a8c | 3129 | svop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
3130 | svop->op_sv = sv; |
3131 | svop->op_next = (OP*)svop; | |
3132 | svop->op_flags = flags; | |
22c35a8c | 3133 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 3134 | scalar((OP*)svop); |
22c35a8c | 3135 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 3136 | svop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 3137 | return CHECKOP(type, svop); |
79072805 LW |
3138 | } |
3139 | ||
3140 | OP * | |
350de78d GS |
3141 | Perl_newPADOP(pTHX_ I32 type, I32 flags, SV *sv) |
3142 | { | |
3143 | PADOP *padop; | |
3144 | NewOp(1101, padop, 1, PADOP); | |
3145 | padop->op_type = type; | |
3146 | padop->op_ppaddr = PL_ppaddr[type]; | |
3147 | padop->op_padix = pad_alloc(type, SVs_PADTMP); | |
7766f137 | 3148 | SvREFCNT_dec(PL_curpad[padop->op_padix]); |
350de78d | 3149 | PL_curpad[padop->op_padix] = sv; |
7766f137 | 3150 | SvPADTMP_on(sv); |
350de78d GS |
3151 | padop->op_next = (OP*)padop; |
3152 | padop->op_flags = flags; | |
3153 | if (PL_opargs[type] & OA_RETSCALAR) | |
3154 | scalar((OP*)padop); | |
3155 | if (PL_opargs[type] & OA_TARGET) | |
3156 | padop->op_targ = pad_alloc(type, SVs_PADTMP); | |
3157 | return CHECKOP(type, padop); | |
3158 | } | |
3159 | ||
3160 | OP * | |
864dbfa3 | 3161 | Perl_newGVOP(pTHX_ I32 type, I32 flags, GV *gv) |
79072805 | 3162 | { |
350de78d | 3163 | #ifdef USE_ITHREADS |
743e66e6 | 3164 | GvIN_PAD_on(gv); |
350de78d GS |
3165 | return newPADOP(type, flags, SvREFCNT_inc(gv)); |
3166 | #else | |
7934575e | 3167 | return newSVOP(type, flags, SvREFCNT_inc(gv)); |
350de78d | 3168 | #endif |
79072805 LW |
3169 | } |
3170 | ||
3171 | OP * | |
864dbfa3 | 3172 | Perl_newPVOP(pTHX_ I32 type, I32 flags, char *pv) |
79072805 LW |
3173 | { |
3174 | PVOP *pvop; | |
b7dc083c | 3175 | NewOp(1101, pvop, 1, PVOP); |
79072805 | 3176 | pvop->op_type = type; |
22c35a8c | 3177 | pvop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
3178 | pvop->op_pv = pv; |
3179 | pvop->op_next = (OP*)pvop; | |
3180 | pvop->op_flags = flags; | |
22c35a8c | 3181 | if (PL_opargs[type] & OA_RETSCALAR) |
463ee0b2 | 3182 | scalar((OP*)pvop); |
22c35a8c | 3183 | if (PL_opargs[type] & OA_TARGET) |
ed6116ce | 3184 | pvop->op_targ = pad_alloc(type, SVs_PADTMP); |
e50aee73 | 3185 | return CHECKOP(type, pvop); |
79072805 LW |
3186 | } |
3187 | ||
79072805 | 3188 | void |
864dbfa3 | 3189 | Perl_package(pTHX_ OP *o) |
79072805 | 3190 | { |
93a17b20 | 3191 | SV *sv; |
79072805 | 3192 | |
3280af22 NIS |
3193 | save_hptr(&PL_curstash); |
3194 | save_item(PL_curstname); | |
11343788 | 3195 | if (o) { |
463ee0b2 LW |
3196 | STRLEN len; |
3197 | char *name; | |
11343788 | 3198 | sv = cSVOPo->op_sv; |
463ee0b2 | 3199 | name = SvPV(sv, len); |
3280af22 NIS |
3200 | PL_curstash = gv_stashpvn(name,len,TRUE); |
3201 | sv_setpvn(PL_curstname, name, len); | |
11343788 | 3202 | op_free(o); |
93a17b20 LW |
3203 | } |
3204 | else { | |
3280af22 NIS |
3205 | sv_setpv(PL_curstname,"<none>"); |
3206 | PL_curstash = Nullhv; | |
93a17b20 | 3207 | } |
7ad382f4 | 3208 | PL_hints |= HINT_BLOCK_SCOPE; |
3280af22 NIS |
3209 | PL_copline = NOLINE; |
3210 | PL_expect = XSTATE; | |
79072805 LW |
3211 | } |
3212 | ||
85e6fe83 | 3213 | void |
864dbfa3 | 3214 | Perl_utilize(pTHX_ int aver, I32 floor, OP *version, OP *id, OP *arg) |
85e6fe83 | 3215 | { |
a0d0e21e | 3216 | OP *pack; |
a0d0e21e LW |
3217 | OP *rqop; |
3218 | OP *imop; | |
b1cb66bf | 3219 | OP *veop; |
78ca652e | 3220 | GV *gv; |
85e6fe83 | 3221 | |
a0d0e21e | 3222 | if (id->op_type != OP_CONST) |
cea2e8a9 | 3223 | Perl_croak(aTHX_ "Module name must be constant"); |
85e6fe83 | 3224 | |
b1cb66bf | 3225 | veop = Nullop; |
3226 | ||
0f79a09d | 3227 | if (version != Nullop) { |
b1cb66bf | 3228 | SV *vesv = ((SVOP*)version)->op_sv; |
3229 | ||
44dcb63b | 3230 | if (arg == Nullop && !SvNIOKp(vesv)) { |
b1cb66bf | 3231 | arg = version; |
3232 | } | |
3233 | else { | |
3234 | OP *pack; | |
0f79a09d | 3235 | SV *meth; |
b1cb66bf | 3236 | |
44dcb63b | 3237 | if (version->op_type != OP_CONST || !SvNIOKp(vesv)) |
cea2e8a9 | 3238 | Perl_croak(aTHX_ "Version number must be constant number"); |
b1cb66bf | 3239 | |
3240 | /* Make copy of id so we don't free it twice */ | |
3241 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); | |
3242 | ||
3243 | /* Fake up a method call to VERSION */ | |
0f79a09d GS |
3244 | meth = newSVpvn("VERSION",7); |
3245 | sv_upgrade(meth, SVt_PVIV); | |
155aba94 | 3246 | (void)SvIOK_on(meth); |
0f79a09d | 3247 | PERL_HASH(SvUVX(meth), SvPVX(meth), SvCUR(meth)); |
b1cb66bf | 3248 | veop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, |
3249 | append_elem(OP_LIST, | |
0f79a09d GS |
3250 | prepend_elem(OP_LIST, pack, list(version)), |
3251 | newSVOP(OP_METHOD_NAMED, 0, meth))); | |
b1cb66bf | 3252 | } |
3253 | } | |
aeea060c | 3254 | |
a0d0e21e | 3255 | /* Fake up an import/unimport */ |
4633a7c4 LW |
3256 | if (arg && arg->op_type == OP_STUB) |
3257 | imop = arg; /* no import on explicit () */ | |
44dcb63b | 3258 | else if (SvNIOKp(((SVOP*)id)->op_sv)) { |
b1cb66bf | 3259 | imop = Nullop; /* use 5.0; */ |
3260 | } | |
4633a7c4 | 3261 | else { |
0f79a09d GS |
3262 | SV *meth; |
3263 | ||
4633a7c4 LW |
3264 | /* Make copy of id so we don't free it twice */ |
3265 | pack = newSVOP(OP_CONST, 0, newSVsv(((SVOP*)id)->op_sv)); | |
0f79a09d GS |
3266 | |
3267 | /* Fake up a method call to import/unimport */ | |
3268 | meth = aver ? newSVpvn("import",6) : newSVpvn("unimport", 8);; | |
3269 | sv_upgrade(meth, SVt_PVIV); | |
155aba94 | 3270 | (void)SvIOK_on(meth); |
0f79a09d | 3271 | PERL_HASH(SvUVX(meth), SvPVX(meth), SvCUR(meth)); |
4633a7c4 | 3272 | imop = convert(OP_ENTERSUB, OPf_STACKED|OPf_SPECIAL, |
0f79a09d GS |
3273 | append_elem(OP_LIST, |
3274 | prepend_elem(OP_LIST, pack, list(arg)), | |
3275 | newSVOP(OP_METHOD_NAMED, 0, meth))); | |
4633a7c4 LW |
3276 | } |
3277 | ||
78ca652e GS |
3278 | /* Fake up a require, handle override, if any */ |
3279 | gv = gv_fetchpv("require", FALSE, SVt_PVCV); | |
3280 | if (!(gv && GvIMPORTED_CV(gv))) | |
3281 | gv = gv_fetchpv("CORE::GLOBAL::require", FALSE, SVt_PVCV); | |
3282 | ||
3283 | if (gv && GvIMPORTED_CV(gv)) { | |
3284 | rqop = ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, | |
3285 | append_elem(OP_LIST, id, | |
3286 | scalar(newUNOP(OP_RV2CV, 0, | |
3287 | newGVOP(OP_GV, 0, | |
3288 | gv)))))); | |
3289 | } | |
3290 | else { | |
3291 | rqop = newUNOP(OP_REQUIRE, 0, id); | |
3292 | } | |
a0d0e21e LW |
3293 | |
3294 | /* Fake up the BEGIN {}, which does its thing immediately. */ | |
09bef843 | 3295 | newATTRSUB(floor, |
79cb57f6 | 3296 | newSVOP(OP_CONST, 0, newSVpvn("BEGIN", 5)), |
4633a7c4 | 3297 | Nullop, |
09bef843 | 3298 | Nullop, |
a0d0e21e | 3299 | append_elem(OP_LINESEQ, |
b1cb66bf | 3300 | append_elem(OP_LINESEQ, |
3301 | newSTATEOP(0, Nullch, rqop), | |
3302 | newSTATEOP(0, Nullch, veop)), | |
a0d0e21e | 3303 | newSTATEOP(0, Nullch, imop) )); |
85e6fe83 | 3304 | |
c305c6a0 | 3305 | PL_hints |= HINT_BLOCK_SCOPE; |
3280af22 NIS |
3306 | PL_copline = NOLINE; |
3307 | PL_expect = XSTATE; | |
85e6fe83 LW |
3308 | } |
3309 | ||
7d3fb230 BS |
3310 | /* |
3311 | =for apidoc load_module | |
3312 | ||
3313 | Loads the module whose name is pointed to by the string part of name. | |
3314 | Note that the actual module name, not its filename, should be given. | |
3315 | Eg, "Foo::Bar" instead of "Foo/Bar.pm". flags can be any of | |
3316 | PERL_LOADMOD_DENY, PERL_LOADMOD_NOIMPORT, or PERL_LOADMOD_IMPORT_OPS | |
3317 | (or 0 for no flags). ver, if specified, provides version semantics | |
3318 | similar to C<use Foo::Bar VERSION>. The optional trailing SV* | |
3319 | arguments can be used to specify arguments to the module's import() | |
3320 | method, similar to C<use Foo::Bar VERSION LIST>. | |
3321 | ||
3322 | =cut */ | |
3323 | ||
e4783991 GS |
3324 | void |
3325 | Perl_load_module(pTHX_ U32 flags, SV *name, SV *ver, ...) | |
3326 | { | |
3327 | va_list args; | |
3328 | va_start(args, ver); | |
3329 | vload_module(flags, name, ver, &args); | |
3330 | va_end(args); | |
3331 | } | |
3332 | ||
3333 | #ifdef PERL_IMPLICIT_CONTEXT | |
3334 | void | |
3335 | Perl_load_module_nocontext(U32 flags, SV *name, SV *ver, ...) | |
3336 | { | |
3337 | dTHX; | |
3338 | va_list args; | |
3339 | va_start(args, ver); | |
3340 | vload_module(flags, name, ver, &args); | |
3341 | va_end(args); | |
3342 | } | |
3343 | #endif | |
3344 | ||
3345 | void | |
3346 | Perl_vload_module(pTHX_ U32 flags, SV *name, SV *ver, va_list *args) | |
3347 | { | |
3348 | OP *modname, *veop, *imop; | |
3349 | ||
3350 | modname = newSVOP(OP_CONST, 0, name); | |
3351 | modname->op_private |= OPpCONST_BARE; | |
3352 | if (ver) { | |
3353 | veop = newSVOP(OP_CONST, 0, ver); | |
3354 | } | |
3355 | else | |
3356 | veop = Nullop; | |
3357 | if (flags & PERL_LOADMOD_NOIMPORT) { | |
3358 | imop = sawparens(newNULLLIST()); | |
3359 | } | |
3360 | else if (flags & PERL_LOADMOD_IMPORT_OPS) { | |
3361 | imop = va_arg(*args, OP*); | |
3362 | } | |
3363 | else { | |
3364 | SV *sv; | |
3365 | imop = Nullop; | |
3366 | sv = va_arg(*args, SV*); | |
3367 | while (sv) { | |
3368 | imop = append_elem(OP_LIST, imop, newSVOP(OP_CONST, 0, sv)); | |
3369 | sv = va_arg(*args, SV*); | |
3370 | } | |
3371 | } | |
81885997 GS |
3372 | { |
3373 | line_t ocopline = PL_copline; | |
3374 | int oexpect = PL_expect; | |
3375 | ||
3376 | utilize(!(flags & PERL_LOADMOD_DENY), start_subparse(FALSE, 0), | |
3377 | veop, modname, imop); | |
3378 | PL_expect = oexpect; | |
3379 | PL_copline = ocopline; | |
3380 | } | |
e4783991 GS |
3381 | } |
3382 | ||
79072805 | 3383 | OP * |
864dbfa3 | 3384 | Perl_dofile(pTHX_ OP *term) |
78ca652e GS |
3385 | { |
3386 | OP *doop; | |
3387 | GV *gv; | |
3388 | ||
3389 | gv = gv_fetchpv("do", FALSE, SVt_PVCV); | |
3390 | if (!(gv && GvIMPORTED_CV(gv))) | |
3391 | gv = gv_fetchpv("CORE::GLOBAL::do", FALSE, SVt_PVCV); | |
3392 | ||
3393 | if (gv && GvIMPORTED_CV(gv)) { | |
3394 | doop = ck_subr(newUNOP(OP_ENTERSUB, OPf_STACKED, | |
3395 | append_elem(OP_LIST, term, | |
3396 | scalar(newUNOP(OP_RV2CV, 0, | |
3397 | newGVOP(OP_GV, 0, | |
3398 | gv)))))); | |
3399 | } | |
3400 | else { | |
3401 | doop = newUNOP(OP_DOFILE, 0, scalar(term)); | |
3402 | } | |
3403 | return doop; | |
3404 | } | |
3405 | ||
3406 | OP * | |
864dbfa3 | 3407 | Perl_newSLICEOP(pTHX_ I32 flags, OP *subscript, OP *listval) |
79072805 LW |
3408 | { |
3409 | return newBINOP(OP_LSLICE, flags, | |
8990e307 LW |
3410 | list(force_list(subscript)), |
3411 | list(force_list(listval)) ); | |
79072805 LW |
3412 | } |
3413 | ||
76e3520e | 3414 | STATIC I32 |
cea2e8a9 | 3415 | S_list_assignment(pTHX_ register OP *o) |
79072805 | 3416 | { |
11343788 | 3417 | if (!o) |
79072805 LW |
3418 | return TRUE; |
3419 | ||
11343788 MB |
3420 | if (o->op_type == OP_NULL && o->op_flags & OPf_KIDS) |
3421 | o = cUNOPo->op_first; | |
79072805 | 3422 | |
11343788 | 3423 | if (o->op_type == OP_COND_EXPR) { |
1a67a97c SM |
3424 | I32 t = list_assignment(cLOGOPo->op_first->op_sibling); |
3425 | I32 f = list_assignment(cLOGOPo->op_first->op_sibling->op_sibling); | |
79072805 LW |
3426 | |
3427 | if (t && f) | |
3428 | return TRUE; | |
3429 | if (t || f) | |
3430 | yyerror("Assignment to both a list and a scalar"); | |
3431 | return FALSE; | |
3432 | } | |
3433 | ||
11343788 MB |
3434 | if (o->op_type == OP_LIST || o->op_flags & OPf_PARENS || |
3435 | o->op_type == OP_RV2AV || o->op_type == OP_RV2HV || | |
3436 | o->op_type == OP_ASLICE || o->op_type == OP_HSLICE) | |
79072805 LW |
3437 | return TRUE; |
3438 | ||
11343788 | 3439 | if (o->op_type == OP_PADAV || o->op_type == OP_PADHV) |
93a17b20 LW |
3440 | return TRUE; |
3441 | ||
11343788 | 3442 | if (o->op_type == OP_RV2SV) |
79072805 LW |
3443 | return FALSE; |
3444 | ||
3445 | return FALSE; | |
3446 | } | |
3447 | ||
3448 | OP * | |
864dbfa3 | 3449 | Perl_newASSIGNOP(pTHX_ I32 flags, OP *left, I32 optype, OP *right) |
79072805 | 3450 | { |
11343788 | 3451 | OP *o; |
79072805 | 3452 | |
a0d0e21e LW |
3453 | if (optype) { |
3454 | if (optype == OP_ANDASSIGN || optype == OP_ORASSIGN) { | |
3455 | return newLOGOP(optype, 0, | |
3456 | mod(scalar(left), optype), | |
3457 | newUNOP(OP_SASSIGN, 0, scalar(right))); | |
3458 | } | |
3459 | else { | |
3460 | return newBINOP(optype, OPf_STACKED, | |
3461 | mod(scalar(left), optype), scalar(right)); | |
3462 | } | |
3463 | } | |
3464 | ||
79072805 | 3465 | if (list_assignment(left)) { |
10c8fecd GS |
3466 | OP *curop; |
3467 | ||
3280af22 NIS |
3468 | PL_modcount = 0; |
3469 | PL_eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ | |
463ee0b2 | 3470 | left = mod(left, OP_AASSIGN); |
3280af22 NIS |
3471 | if (PL_eval_start) |
3472 | PL_eval_start = 0; | |
748a9306 | 3473 | else { |
a0d0e21e LW |
3474 | op_free(left); |
3475 | op_free(right); | |
3476 | return Nullop; | |
3477 | } | |
10c8fecd GS |
3478 | curop = list(force_list(left)); |
3479 | o = newBINOP(OP_AASSIGN, flags, list(force_list(right)), curop); | |
11343788 | 3480 | o->op_private = 0 | (flags >> 8); |
10c8fecd GS |
3481 | for (curop = ((LISTOP*)curop)->op_first; |
3482 | curop; curop = curop->op_sibling) | |
3483 | { | |
3484 | if (curop->op_type == OP_RV2HV && | |
3485 | ((UNOP*)curop)->op_first->op_type != OP_GV) { | |
3486 | o->op_private |= OPpASSIGN_HASH; | |
3487 | break; | |
3488 | } | |
3489 | } | |
a0d0e21e | 3490 | if (!(left->op_private & OPpLVAL_INTRO)) { |
11343788 | 3491 | OP *lastop = o; |
3280af22 | 3492 | PL_generation++; |
11343788 | 3493 | for (curop = LINKLIST(o); curop != o; curop = LINKLIST(curop)) { |
22c35a8c | 3494 | if (PL_opargs[curop->op_type] & OA_DANGEROUS) { |
79072805 | 3495 | if (curop->op_type == OP_GV) { |
638eceb6 | 3496 | GV *gv = cGVOPx_gv(curop); |
3280af22 | 3497 | if (gv == PL_defgv || SvCUR(gv) == PL_generation) |
79072805 | 3498 | break; |
3280af22 | 3499 | SvCUR(gv) = PL_generation; |
79072805 | 3500 | } |
748a9306 LW |
3501 | else if (curop->op_type == OP_PADSV || |
3502 | curop->op_type == OP_PADAV || | |
3503 | curop->op_type == OP_PADHV || | |
3504 | curop->op_type == OP_PADANY) { | |
3280af22 | 3505 | SV **svp = AvARRAY(PL_comppad_name); |
8e07c86e | 3506 | SV *sv = svp[curop->op_targ]; |
3280af22 | 3507 | if (SvCUR(sv) == PL_generation) |
748a9306 | 3508 | break; |
3280af22 | 3509 | SvCUR(sv) = PL_generation; /* (SvCUR not used any more) */ |
748a9306 | 3510 | } |
79072805 LW |
3511 | else if (curop->op_type == OP_RV2CV) |
3512 | break; | |
3513 | else if (curop->op_type == OP_RV2SV || | |
3514 | curop->op_type == OP_RV2AV || | |
3515 | curop->op_type == OP_RV2HV || | |
3516 | curop->op_type == OP_RV2GV) { | |
3517 | if (lastop->op_type != OP_GV) /* funny deref? */ | |
3518 | break; | |
3519 | } | |
1167e5da SM |
3520 | else if (curop->op_type == OP_PUSHRE) { |
3521 | if (((PMOP*)curop)->op_pmreplroot) { | |
b3f5893f GS |
3522 | #ifdef USE_ITHREADS |
3523 | GV *gv = (GV*)PL_curpad[(PADOFFSET)((PMOP*)curop)->op_pmreplroot]; | |
3524 | #else | |
1167e5da | 3525 | GV *gv = (GV*)((PMOP*)curop)->op_pmreplroot; |
b3f5893f | 3526 | #endif |
3280af22 | 3527 | if (gv == PL_defgv || SvCUR(gv) == PL_generation) |
1167e5da | 3528 | break; |
3280af22 | 3529 | SvCUR(gv) = PL_generation; |
1167e5da SM |
3530 | } |
3531 | } | |
79072805 LW |
3532 | else |
3533 | break; | |
3534 | } | |
3535 | lastop = curop; | |
3536 | } | |
11343788 | 3537 | if (curop != o) |
10c8fecd | 3538 | o->op_private |= OPpASSIGN_COMMON; |
79072805 | 3539 | } |
c07a80fd | 3540 | if (right && right->op_type == OP_SPLIT) { |
3541 | OP* tmpop; | |
3542 | if ((tmpop = ((LISTOP*)right)->op_first) && | |
3543 | tmpop->op_type == OP_PUSHRE) | |
3544 | { | |
3545 | PMOP *pm = (PMOP*)tmpop; | |
3546 | if (left->op_type == OP_RV2AV && | |
3547 | !(left->op_private & OPpLVAL_INTRO) && | |
11343788 | 3548 | !(o->op_private & OPpASSIGN_COMMON) ) |
c07a80fd | 3549 | { |
3550 | tmpop = ((UNOP*)left)->op_first; | |
3551 | if (tmpop->op_type == OP_GV && !pm->op_pmreplroot) { | |
971a9dd3 GS |
3552 | #ifdef USE_ITHREADS |
3553 | pm->op_pmreplroot = (OP*)cPADOPx(tmpop)->op_padix; | |
3554 | cPADOPx(tmpop)->op_padix = 0; /* steal it */ | |
3555 | #else | |
3556 | pm->op_pmreplroot = (OP*)cSVOPx(tmpop)->op_sv; | |
3557 | cSVOPx(tmpop)->op_sv = Nullsv; /* steal it */ | |
3558 | #endif | |
c07a80fd | 3559 | pm->op_pmflags |= PMf_ONCE; |
11343788 | 3560 | tmpop = cUNOPo->op_first; /* to list (nulled) */ |
c07a80fd | 3561 | tmpop = ((UNOP*)tmpop)->op_first; /* to pushmark */ |
3562 | tmpop->op_sibling = Nullop; /* don't free split */ | |
3563 | right->op_next = tmpop->op_next; /* fix starting loc */ | |
11343788 | 3564 | op_free(o); /* blow off assign */ |
54310121 | 3565 | right->op_flags &= ~OPf_WANT; |
a5f75d66 | 3566 | /* "I don't know and I don't care." */ |
c07a80fd | 3567 | return right; |
3568 | } | |
3569 | } | |
3570 | else { | |
e6438c1a | 3571 | if (PL_modcount < RETURN_UNLIMITED_NUMBER && |
c07a80fd | 3572 | ((LISTOP*)right)->op_last->op_type == OP_CONST) |
3573 | { | |
3574 | SV *sv = ((SVOP*)((LISTOP*)right)->op_last)->op_sv; | |
3575 | if (SvIVX(sv) == 0) | |
3280af22 | 3576 | sv_setiv(sv, PL_modcount+1); |
c07a80fd | 3577 | } |
3578 | } | |
3579 | } | |
3580 | } | |
11343788 | 3581 | return o; |
79072805 LW |
3582 | } |
3583 | if (!right) | |
3584 | right = newOP(OP_UNDEF, 0); | |
3585 | if (right->op_type == OP_READLINE) { | |
3586 | right->op_flags |= OPf_STACKED; | |
463ee0b2 | 3587 | return newBINOP(OP_NULL, flags, mod(scalar(left), OP_SASSIGN), scalar(right)); |
79072805 | 3588 | } |
a0d0e21e | 3589 | else { |
3280af22 | 3590 | PL_eval_start = right; /* Grandfathering $[ assignment here. Bletch.*/ |
11343788 | 3591 | o = newBINOP(OP_SASSIGN, flags, |
463ee0b2 | 3592 | scalar(right), mod(scalar(left), OP_SASSIGN) ); |
3280af22 NIS |
3593 | if (PL_eval_start) |
3594 | PL_eval_start = 0; | |
748a9306 | 3595 | else { |
11343788 | 3596 | op_free(o); |
a0d0e21e LW |
3597 | return Nullop; |
3598 | } | |
3599 | } | |
11343788 | 3600 | return o; |
79072805 LW |
3601 | } |
3602 | ||
3603 | OP * | |
864dbfa3 | 3604 | Perl_newSTATEOP(pTHX_ I32 flags, char *label, OP *o) |
79072805 | 3605 | { |
bbce6d69 | 3606 | U32 seq = intro_my(); |
79072805 LW |
3607 | register COP *cop; |
3608 | ||
b7dc083c | 3609 | NewOp(1101, cop, 1, COP); |
57843af0 | 3610 | if (PERLDB_LINE && CopLINE(PL_curcop) && PL_curstash != PL_debstash) { |
8990e307 | 3611 | cop->op_type = OP_DBSTATE; |
22c35a8c | 3612 | cop->op_ppaddr = PL_ppaddr[ OP_DBSTATE ]; |
8990e307 LW |
3613 | } |
3614 | else { | |
3615 | cop->op_type = OP_NEXTSTATE; | |
22c35a8c | 3616 | cop->op_ppaddr = PL_ppaddr[ OP_NEXTSTATE ]; |
8990e307 | 3617 | } |
79072805 | 3618 | cop->op_flags = flags; |
393fec97 | 3619 | cop->op_private = (PL_hints & HINT_BYTE); |
ff0cee69 | 3620 | #ifdef NATIVE_HINTS |
3621 | cop->op_private |= NATIVE_HINTS; | |
3622 | #endif | |
e24b16f9 | 3623 | PL_compiling.op_private = cop->op_private; |
79072805 LW |
3624 | cop->op_next = (OP*)cop; |
3625 | ||
463ee0b2 LW |
3626 | if (label) { |
3627 | cop->cop_label = label; | |
3280af22 | 3628 | PL_hints |= HINT_BLOCK_SCOPE; |
463ee0b2 | 3629 | } |
bbce6d69 | 3630 | cop->cop_seq = seq; |
3280af22 | 3631 | cop->cop_arybase = PL_curcop->cop_arybase; |
0453d815 | 3632 | if (specialWARN(PL_curcop->cop_warnings)) |
599cee73 | 3633 | cop->cop_warnings = PL_curcop->cop_warnings ; |
1c846c1f | 3634 | else |
599cee73 | 3635 | cop->cop_warnings = newSVsv(PL_curcop->cop_warnings) ; |
ac27b0f5 NIS |
3636 | if (specialCopIO(PL_curcop->cop_io)) |
3637 | cop->cop_io = PL_curcop->cop_io; | |
3638 | else | |
3639 | cop->cop_io = newSVsv(PL_curcop->cop_io) ; | |
599cee73 | 3640 | |
79072805 | 3641 | |
3280af22 | 3642 | if (PL_copline == NOLINE) |
57843af0 | 3643 | CopLINE_set(cop, CopLINE(PL_curcop)); |
79072805 | 3644 | else { |
57843af0 | 3645 | CopLINE_set(cop, PL_copline); |
3280af22 | 3646 | PL_copline = NOLINE; |
79072805 | 3647 | } |
57843af0 | 3648 | #ifdef USE_ITHREADS |
f4dd75d9 | 3649 | CopFILE_set(cop, CopFILE(PL_curcop)); /* XXX share in a pvtable? */ |
57843af0 | 3650 | #else |
f4dd75d9 | 3651 | CopFILEGV_set(cop, CopFILEGV(PL_curcop)); |
57843af0 | 3652 | #endif |
11faa288 | 3653 | CopSTASH_set(cop, PL_curstash); |
79072805 | 3654 | |
3280af22 | 3655 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
cc49e20b | 3656 | SV **svp = av_fetch(CopFILEAV(PL_curcop), (I32)CopLINE(cop), FALSE); |
3280af22 | 3657 | if (svp && *svp != &PL_sv_undef && !SvIOK(*svp)) { |
a0d0e21e | 3658 | (void)SvIOK_on(*svp); |
57b2e452 | 3659 | SvIVX(*svp) = PTR2IV(cop); |
93a17b20 LW |
3660 | } |
3661 | } | |
3662 | ||
11343788 | 3663 | return prepend_elem(OP_LINESEQ, (OP*)cop, o); |
79072805 LW |
3664 | } |
3665 | ||
bbce6d69 | 3666 | /* "Introduce" my variables to visible status. */ |
3667 | U32 | |
864dbfa3 | 3668 | Perl_intro_my(pTHX) |
bbce6d69 | 3669 | { |
3670 | SV **svp; | |
3671 | SV *sv; | |
3672 | I32 i; | |
3673 | ||
3280af22 NIS |
3674 | if (! PL_min_intro_pending) |
3675 | return PL_cop_seqmax; | |
bbce6d69 | 3676 | |
3280af22 NIS |
3677 | svp = AvARRAY(PL_comppad_name); |
3678 | for (i = PL_min_intro_pending; i <= PL_max_intro_pending; i++) { | |
3679 | if ((sv = svp[i]) && sv != &PL_sv_undef && !SvIVX(sv)) { | |
c53d7c7d | 3680 | SvIVX(sv) = PAD_MAX; /* Don't know scope end yet. */ |
65202027 | 3681 | SvNVX(sv) = (NV)PL_cop_seqmax; |
bbce6d69 | 3682 | } |
3683 | } | |
3280af22 NIS |
3684 | PL_min_intro_pending = 0; |
3685 | PL_comppad_name_fill = PL_max_intro_pending; /* Needn't search higher */ | |
3686 | return PL_cop_seqmax++; | |
bbce6d69 | 3687 | } |
3688 | ||
79072805 | 3689 | OP * |
864dbfa3 | 3690 | Perl_newLOGOP(pTHX_ I32 type, I32 flags, OP *first, OP *other) |
79072805 | 3691 | { |
883ffac3 CS |
3692 | return new_logop(type, flags, &first, &other); |
3693 | } | |
3694 | ||
3bd495df | 3695 | STATIC OP * |
cea2e8a9 | 3696 | S_new_logop(pTHX_ I32 type, I32 flags, OP** firstp, OP** otherp) |
883ffac3 | 3697 | { |
79072805 | 3698 | LOGOP *logop; |
11343788 | 3699 | OP *o; |
883ffac3 CS |
3700 | OP *first = *firstp; |
3701 | OP *other = *otherp; | |
79072805 | 3702 | |
a0d0e21e LW |
3703 | if (type == OP_XOR) /* Not short circuit, but here by precedence. */ |
3704 | return newBINOP(type, flags, scalar(first), scalar(other)); | |
3705 | ||
8990e307 | 3706 | scalarboolean(first); |
79072805 LW |
3707 | /* optimize "!a && b" to "a || b", and "!a || b" to "a && b" */ |
3708 | if (first->op_type == OP_NOT && (first->op_flags & OPf_SPECIAL)) { | |
3709 | if (type == OP_AND || type == OP_OR) { | |
3710 | if (type == OP_AND) | |
3711 | type = OP_OR; | |
3712 | else | |
3713 | type = OP_AND; | |
11343788 | 3714 | o = first; |
883ffac3 | 3715 | first = *firstp = cUNOPo->op_first; |
11343788 MB |
3716 | if (o->op_next) |
3717 | first->op_next = o->op_next; | |
3718 | cUNOPo->op_first = Nullop; | |
3719 | op_free(o); | |
79072805 LW |
3720 | } |
3721 | } | |
3722 | if (first->op_type == OP_CONST) { | |
4673fc70 | 3723 | if (ckWARN(WARN_BAREWORD) && (first->op_private & OPpCONST_BARE)) |
1c846c1f | 3724 | Perl_warner(aTHX_ WARN_BAREWORD, "Bareword found in conditional"); |
79072805 LW |
3725 | if ((type == OP_AND) == (SvTRUE(((SVOP*)first)->op_sv))) { |
3726 | op_free(first); | |
883ffac3 | 3727 | *firstp = Nullop; |
79072805 LW |
3728 | return other; |
3729 | } | |
3730 | else { | |
3731 | op_free(other); | |
883ffac3 | 3732 | *otherp = Nullop; |
79072805 LW |
3733 | return first; |
3734 | } | |
3735 | } | |
3736 | else if (first->op_type == OP_WANTARRAY) { | |
3737 | if (type == OP_AND) | |
3738 | list(other); | |
3739 | else | |
3740 | scalar(other); | |
3741 | } | |
e476b1b5 | 3742 | else if (ckWARN(WARN_MISC) && (first->op_flags & OPf_KIDS)) { |
a6006777 | 3743 | OP *k1 = ((UNOP*)first)->op_first; |
3744 | OP *k2 = k1->op_sibling; | |
3745 | OPCODE warnop = 0; | |
3746 | switch (first->op_type) | |
3747 | { | |
3748 | case OP_NULL: | |
3749 | if (k2 && k2->op_type == OP_READLINE | |
3750 | && (k2->op_flags & OPf_STACKED) | |
1c846c1f | 3751 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
72b16652 | 3752 | { |
a6006777 | 3753 | warnop = k2->op_type; |
72b16652 | 3754 | } |
a6006777 | 3755 | break; |
3756 | ||
3757 | case OP_SASSIGN: | |
68dc0745 | 3758 | if (k1->op_type == OP_READDIR |
3759 | || k1->op_type == OP_GLOB | |
72b16652 | 3760 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) |
68dc0745 | 3761 | || k1->op_type == OP_EACH) |
72b16652 GS |
3762 | { |
3763 | warnop = ((k1->op_type == OP_NULL) | |
3764 | ? k1->op_targ : k1->op_type); | |
3765 | } | |
a6006777 | 3766 | break; |
3767 | } | |
8ebc5c01 | 3768 | if (warnop) { |
57843af0 GS |
3769 | line_t oldline = CopLINE(PL_curcop); |
3770 | CopLINE_set(PL_curcop, PL_copline); | |
e476b1b5 | 3771 | Perl_warner(aTHX_ WARN_MISC, |
599cee73 | 3772 | "Value of %s%s can be \"0\"; test with defined()", |
22c35a8c | 3773 | PL_op_desc[warnop], |
68dc0745 | 3774 | ((warnop == OP_READLINE || warnop == OP_GLOB) |
3775 | ? " construct" : "() operator")); | |
57843af0 | 3776 | CopLINE_set(PL_curcop, oldline); |
8ebc5c01 | 3777 | } |
a6006777 | 3778 | } |
79072805 LW |
3779 | |
3780 | if (!other) | |
3781 | return first; | |
3782 | ||
a0d0e21e LW |
3783 | if (type == OP_ANDASSIGN || type == OP_ORASSIGN) |
3784 | other->op_private |= OPpASSIGN_BACKWARDS; /* other is an OP_SASSIGN */ | |
3785 | ||
b7dc083c | 3786 | NewOp(1101, logop, 1, LOGOP); |
79072805 LW |
3787 | |
3788 | logop->op_type = type; | |
22c35a8c | 3789 | logop->op_ppaddr = PL_ppaddr[type]; |
79072805 LW |
3790 | logop->op_first = first; |
3791 | logop->op_flags = flags | OPf_KIDS; | |
3792 | logop->op_other = LINKLIST(other); | |
c07a80fd | 3793 | logop->op_private = 1 | (flags >> 8); |
79072805 LW |
3794 | |
3795 | /* establish postfix order */ | |
3796 | logop->op_next = LINKLIST(first); | |
3797 | first->op_next = (OP*)logop; | |
3798 | first->op_sibling = other; | |
3799 | ||
11343788 MB |
3800 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
3801 | other->op_next = o; | |
79072805 | 3802 | |
11343788 | 3803 | return o; |
79072805 LW |
3804 | } |
3805 | ||
3806 | OP * | |
864dbfa3 | 3807 | Perl_newCONDOP(pTHX_ I32 flags, OP *first, OP *trueop, OP *falseop) |
79072805 | 3808 | { |
1a67a97c SM |
3809 | LOGOP *logop; |
3810 | OP *start; | |
11343788 | 3811 | OP *o; |
79072805 | 3812 | |
b1cb66bf | 3813 | if (!falseop) |
3814 | return newLOGOP(OP_AND, 0, first, trueop); | |
3815 | if (!trueop) | |
3816 | return newLOGOP(OP_OR, 0, first, falseop); | |
79072805 | 3817 | |
8990e307 | 3818 | scalarboolean(first); |
79072805 LW |
3819 | if (first->op_type == OP_CONST) { |
3820 | if (SvTRUE(((SVOP*)first)->op_sv)) { | |
3821 | op_free(first); | |
b1cb66bf | 3822 | op_free(falseop); |
3823 | return trueop; | |
79072805 LW |
3824 | } |
3825 | else { | |
3826 | op_free(first); | |
b1cb66bf | 3827 | op_free(trueop); |
3828 | return falseop; | |
79072805 LW |
3829 | } |
3830 | } | |
3831 | else if (first->op_type == OP_WANTARRAY) { | |
b1cb66bf | 3832 | list(trueop); |
3833 | scalar(falseop); | |
79072805 | 3834 | } |
1a67a97c SM |
3835 | NewOp(1101, logop, 1, LOGOP); |
3836 | logop->op_type = OP_COND_EXPR; | |
3837 | logop->op_ppaddr = PL_ppaddr[OP_COND_EXPR]; | |
3838 | logop->op_first = first; | |
3839 | logop->op_flags = flags | OPf_KIDS; | |
3840 | logop->op_private = 1 | (flags >> 8); | |
3841 | logop->op_other = LINKLIST(trueop); | |
3842 | logop->op_next = LINKLIST(falseop); | |
79072805 | 3843 | |
79072805 LW |
3844 | |
3845 | /* establish postfix order */ | |
1a67a97c SM |
3846 | start = LINKLIST(first); |
3847 | first->op_next = (OP*)logop; | |
79072805 | 3848 | |
b1cb66bf | 3849 | first->op_sibling = trueop; |
3850 | trueop->op_sibling = falseop; | |
1a67a97c | 3851 | o = newUNOP(OP_NULL, 0, (OP*)logop); |
79072805 | 3852 | |
1a67a97c | 3853 | trueop->op_next = falseop->op_next = o; |
79072805 | 3854 | |
1a67a97c | 3855 | o->op_next = start; |
11343788 | 3856 | return o; |
79072805 LW |
3857 | } |
3858 | ||
3859 | OP * | |
864dbfa3 | 3860 | Perl_newRANGE(pTHX_ I32 flags, OP *left, OP *right) |
79072805 | 3861 | { |
1a67a97c | 3862 | LOGOP *range; |
79072805 LW |
3863 | OP *flip; |
3864 | OP *flop; | |
1a67a97c | 3865 | OP *leftstart; |
11343788 | 3866 | OP *o; |
79072805 | 3867 | |
1a67a97c | 3868 | NewOp(1101, range, 1, LOGOP); |
79072805 | 3869 | |
1a67a97c SM |
3870 | range->op_type = OP_RANGE; |
3871 | range->op_ppaddr = PL_ppaddr[OP_RANGE]; | |
3872 | range->op_first = left; | |
3873 | range->op_flags = OPf_KIDS; | |
3874 | leftstart = LINKLIST(left); | |
3875 | range->op_other = LINKLIST(right); | |
3876 | range->op_private = 1 | (flags >> 8); | |
79072805 LW |
3877 | |
3878 | left->op_sibling = right; | |
3879 | ||
1a67a97c SM |
3880 | range->op_next = (OP*)range; |
3881 | flip = newUNOP(OP_FLIP, flags, (OP*)range); | |
79072805 | 3882 | flop = newUNOP(OP_FLOP, 0, flip); |
11343788 | 3883 | o = newUNOP(OP_NULL, 0, flop); |
79072805 | 3884 | linklist(flop); |
1a67a97c | 3885 | range->op_next = leftstart; |
79072805 LW |
3886 | |
3887 | left->op_next = flip; | |
3888 | right->op_next = flop; | |
3889 | ||
1a67a97c SM |
3890 | range->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
3891 | sv_upgrade(PAD_SV(range->op_targ), SVt_PVNV); | |
ed6116ce | 3892 | flip->op_targ = pad_alloc(OP_RANGE, SVs_PADMY); |
79072805 LW |
3893 | sv_upgrade(PAD_SV(flip->op_targ), SVt_PVNV); |
3894 | ||
3895 | flip->op_private = left->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
3896 | flop->op_private = right->op_type == OP_CONST ? OPpFLIP_LINENUM : 0; | |
3897 | ||
11343788 | 3898 | flip->op_next = o; |
79072805 | 3899 | if (!flip->op_private || !flop->op_private) |
11343788 | 3900 | linklist(o); /* blow off optimizer unless constant */ |
79072805 | 3901 | |
11343788 | 3902 | return o; |
79072805 LW |
3903 | } |
3904 | ||
3905 | OP * | |
864dbfa3 | 3906 | Perl_newLOOPOP(pTHX_ I32 flags, I32 debuggable, OP *expr, OP *block) |
79072805 | 3907 | { |
463ee0b2 | 3908 | OP* listop; |
11343788 | 3909 | OP* o; |
463ee0b2 | 3910 | int once = block && block->op_flags & OPf_SPECIAL && |
a0d0e21e | 3911 | (block->op_type == OP_ENTERSUB || block->op_type == OP_NULL); |
93a17b20 | 3912 | |
463ee0b2 LW |
3913 | if (expr) { |
3914 | if (once && expr->op_type == OP_CONST && !SvTRUE(((SVOP*)expr)->op_sv)) | |
3915 | return block; /* do {} while 0 does once */ | |
fb73857a | 3916 | if (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB |
3917 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB)) { | |
774d564b | 3918 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 3919 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 GS |
3920 | } else if (expr->op_flags & OPf_KIDS) { |
3921 | OP *k1 = ((UNOP*)expr)->op_first; | |
3922 | OP *k2 = (k1) ? k1->op_sibling : NULL; | |
3923 | switch (expr->op_type) { | |
1c846c1f | 3924 | case OP_NULL: |
55d729e4 GS |
3925 | if (k2 && k2->op_type == OP_READLINE |
3926 | && (k2->op_flags & OPf_STACKED) | |
1c846c1f | 3927 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
55d729e4 | 3928 | expr = newUNOP(OP_DEFINED, 0, expr); |
1c846c1f | 3929 | break; |
55d729e4 GS |
3930 | |
3931 | case OP_SASSIGN: | |
3932 | if (k1->op_type == OP_READDIR | |
3933 | || k1->op_type == OP_GLOB | |
72b16652 | 3934 | || (k1->op_type == OP_NULL && k1->op_targ == OP_NULL) |
55d729e4 GS |
3935 | || k1->op_type == OP_EACH) |
3936 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3937 | break; | |
3938 | } | |
774d564b | 3939 | } |
463ee0b2 | 3940 | } |
93a17b20 | 3941 | |
8990e307 | 3942 | listop = append_elem(OP_LINESEQ, block, newOP(OP_UNSTACK, 0)); |
883ffac3 | 3943 | o = new_logop(OP_AND, 0, &expr, &listop); |
463ee0b2 | 3944 | |
883ffac3 CS |
3945 | if (listop) |
3946 | ((LISTOP*)listop)->op_last->op_next = LINKLIST(o); | |
79072805 | 3947 | |
11343788 MB |
3948 | if (once && o != listop) |
3949 | o->op_next = ((LOGOP*)cUNOPo->op_first)->op_other; | |
79072805 | 3950 | |
11343788 MB |
3951 | if (o == listop) |
3952 | o = newUNOP(OP_NULL, 0, o); /* or do {} while 1 loses outer block */ | |
748a9306 | 3953 | |
11343788 MB |
3954 | o->op_flags |= flags; |
3955 | o = scope(o); | |
3956 | o->op_flags |= OPf_SPECIAL; /* suppress POPBLOCK curpm restoration*/ | |
3957 | return o; | |
79072805 LW |
3958 | } |
3959 | ||
3960 | OP * | |
864dbfa3 | 3961 | Perl_newWHILEOP(pTHX_ I32 flags, I32 debuggable, LOOP *loop, I32 whileline, OP *expr, OP *block, OP *cont) |
79072805 LW |
3962 | { |
3963 | OP *redo; | |
3964 | OP *next = 0; | |
3965 | OP *listop; | |
11343788 | 3966 | OP *o; |
79072805 | 3967 | OP *condop; |
1ba6ee2b | 3968 | U8 loopflags = 0; |
79072805 | 3969 | |
fb73857a | 3970 | if (expr && (expr->op_type == OP_READLINE || expr->op_type == OP_GLOB |
3971 | || (expr->op_type == OP_NULL && expr->op_targ == OP_GLOB))) { | |
748a9306 | 3972 | expr = newUNOP(OP_DEFINED, 0, |
54b9620d | 3973 | newASSIGNOP(0, newDEFSVOP(), 0, expr) ); |
55d729e4 GS |
3974 | } else if (expr && (expr->op_flags & OPf_KIDS)) { |
3975 | OP *k1 = ((UNOP*)expr)->op_first; | |
3976 | OP *k2 = (k1) ? k1->op_sibling : NULL; | |
3977 | switch (expr->op_type) { | |
1c846c1f | 3978 | case OP_NULL: |
55d729e4 GS |
3979 | if (k2 && k2->op_type == OP_READLINE |
3980 | && (k2->op_flags & OPf_STACKED) | |
1c846c1f | 3981 | && ((k1->op_flags & OPf_WANT) == OPf_WANT_SCALAR)) |
55d729e4 | 3982 | expr = newUNOP(OP_DEFINED, 0, expr); |
1c846c1f | 3983 | break; |
55d729e4 GS |
3984 | |
3985 | case OP_SASSIGN: | |
3986 | if (k1->op_type == OP_READDIR | |
3987 | || k1->op_type == OP_GLOB | |
72b16652 | 3988 | || (k1->op_type == OP_NULL && k1->op_targ == OP_GLOB) |
55d729e4 GS |
3989 | || k1->op_type == OP_EACH) |
3990 | expr = newUNOP(OP_DEFINED, 0, expr); | |
3991 | break; | |
3992 | } | |
748a9306 | 3993 | } |
79072805 LW |
3994 | |
3995 | if (!block) | |
3996 | block = newOP(OP_NULL, 0); | |
87246558 GS |
3997 | else if (cont) { |
3998 | block = scope(block); | |
3999 | } | |
79072805 | 4000 | |
1ba6ee2b | 4001 | if (cont) { |
79072805 | 4002 | next = LINKLIST(cont); |
1ba6ee2b | 4003 | } |
fb73857a | 4004 | if (expr) { |
85538317 GS |
4005 | OP *unstack = newOP(OP_UNSTACK, 0); |
4006 | if (!next) | |
4007 | next = unstack; | |
4008 | cont = append_elem(OP_LINESEQ, cont, unstack); | |
fb73857a | 4009 | if ((line_t)whileline != NOLINE) { |
3280af22 | 4010 | PL_copline = whileline; |
fb73857a | 4011 | cont = append_elem(OP_LINESEQ, cont, |
4012 | newSTATEOP(0, Nullch, Nullop)); | |
4013 | } | |
4014 | } | |
79072805 | 4015 | |
463ee0b2 | 4016 | listop = append_list(OP_LINESEQ, (LISTOP*)block, (LISTOP*)cont); |
79072805 LW |
4017 | redo = LINKLIST(listop); |
4018 | ||
4019 | if (expr) { | |
3280af22 | 4020 | PL_copline = whileline; |
883ffac3 CS |
4021 | scalar(listop); |
4022 | o = new_logop(OP_AND, 0, &expr, &listop); | |
11343788 | 4023 | if (o == expr && o->op_type == OP_CONST && !SvTRUE(cSVOPo->op_sv)) { |
85e6fe83 | 4024 | op_free(expr); /* oops, it's a while (0) */ |
463ee0b2 | 4025 | op_free((OP*)loop); |
883ffac3 | 4026 | return Nullop; /* listop already freed by new_logop */ |
463ee0b2 | 4027 | } |
883ffac3 CS |
4028 | if (listop) |
4029 | ((LISTOP*)listop)->op_last->op_next = condop = | |
4030 | (o == listop ? redo : LINKLIST(o)); | |
79072805 LW |
4031 | } |
4032 | else | |
11343788 | 4033 | o = listop; |
79072805 LW |
4034 | |
4035 | if (!loop) { | |
b7dc083c | 4036 | NewOp(1101,loop,1,LOOP); |
79072805 | 4037 | loop->op_type = OP_ENTERLOOP; |
22c35a8c | 4038 | loop->op_ppaddr = PL_ppaddr[OP_ENTERLOOP]; |
79072805 LW |
4039 | loop->op_private = 0; |
4040 | loop->op_next = (OP*)loop; | |
4041 | } | |
4042 | ||
11343788 | 4043 | o = newBINOP(OP_LEAVELOOP, 0, (OP*)loop, o); |
79072805 LW |
4044 | |
4045 | loop->op_redoop = redo; | |
11343788 | 4046 | loop->op_lastop = o; |
1ba6ee2b | 4047 | o->op_private |= loopflags; |
79072805 LW |
4048 | |
4049 | if (next) | |
4050 | loop->op_nextop = next; | |
4051 | else | |
11343788 | 4052 | loop->op_nextop = o; |
79072805 | 4053 | |
11343788 MB |
4054 | o->op_flags |= flags; |
4055 | o->op_private |= (flags >> 8); | |
4056 | return o; | |
79072805 LW |
4057 | } |
4058 | ||
4059 | OP * | |
864dbfa3 | 4060 | Perl_newFOROP(pTHX_ I32 flags,char *label,line_t forline,OP *sv,OP *expr,OP *block,OP *cont) |
79072805 LW |
4061 | { |
4062 | LOOP *loop; | |
fb73857a | 4063 | OP *wop; |
85e6fe83 | 4064 | int padoff = 0; |
4633a7c4 | 4065 | I32 iterflags = 0; |
79072805 | 4066 | |
79072805 | 4067 | if (sv) { |
85e6fe83 | 4068 | if (sv->op_type == OP_RV2SV) { /* symbol table variable */ |
748a9306 | 4069 | sv->op_type = OP_RV2GV; |
22c35a8c | 4070 | sv->op_ppaddr = PL_ppaddr[OP_RV2GV]; |
79072805 | 4071 | } |
85e6fe83 LW |
4072 | else if (sv->op_type == OP_PADSV) { /* private variable */ |
4073 | padoff = sv->op_targ; | |
743e66e6 | 4074 | sv->op_targ = 0; |
85e6fe83 LW |
4075 | op_free(sv); |
4076 | sv = Nullop; | |
4077 | } | |
54b9620d MB |
4078 | else if (sv->op_type == OP_THREADSV) { /* per-thread variable */ |
4079 | padoff = sv->op_targ; | |
743e66e6 | 4080 | sv->op_targ = 0; |
54b9620d MB |
4081 | iterflags |= OPf_SPECIAL; |
4082 | op_free(sv); | |
4083 | sv = Nullop; | |
4084 | } | |
79072805 | 4085 | else |
cea2e8a9 | 4086 | Perl_croak(aTHX_ "Can't use %s for loop variable", PL_op_desc[sv->op_type]); |
79072805 LW |
4087 | } |
4088 | else { | |
54b9620d MB |
4089 | #ifdef USE_THREADS |
4090 | padoff = find_threadsv("_"); | |
4091 | iterflags |= OPf_SPECIAL; | |
4092 | #else | |
3280af22 | 4093 | sv = newGVOP(OP_GV, 0, PL_defgv); |
54b9620d | 4094 | #endif |
79072805 | 4095 | } |
5f05dabc | 4096 | if (expr->op_type == OP_RV2AV || expr->op_type == OP_PADAV) { |
89ea2908 | 4097 | expr = mod(force_list(scalar(ref(expr, OP_ITER))), OP_GREPSTART); |
4633a7c4 LW |
4098 | iterflags |= OPf_STACKED; |
4099 | } | |
89ea2908 GA |
4100 | else if (expr->op_type == OP_NULL && |
4101 | (expr->op_flags & OPf_KIDS) && | |
4102 | ((BINOP*)expr)->op_first->op_type == OP_FLOP) | |
4103 | { | |
4104 | /* Basically turn for($x..$y) into the same as for($x,$y), but we | |
4105 | * set the STACKED flag to indicate that these values are to be | |
4106 | * treated as min/max values by 'pp_iterinit'. | |
4107 | */ | |
4108 | UNOP* flip = (UNOP*)((UNOP*)((BINOP*)expr)->op_first)->op_first; | |
1a67a97c | 4109 | LOGOP* range = (LOGOP*) flip->op_first; |
89ea2908 GA |
4110 | OP* left = range->op_first; |
4111 | OP* right = left->op_sibling; | |
5152d7c7 | 4112 | LISTOP* listop; |
89ea2908 GA |
4113 | |
4114 | range->op_flags &= ~OPf_KIDS; | |
4115 | range->op_first = Nullop; | |
4116 | ||
5152d7c7 | 4117 | listop = (LISTOP*)newLISTOP(OP_LIST, 0, left, right); |
1a67a97c SM |
4118 | listop->op_first->op_next = range->op_next; |
4119 | left->op_next = range->op_other; | |
5152d7c7 GS |
4120 | right->op_next = (OP*)listop; |
4121 | listop->op_next = listop->op_first; | |
89ea2908 GA |
4122 | |
4123 | op_free(expr); | |
5152d7c7 | 4124 | expr = (OP*)(listop); |
89ea2908 GA |
4125 | null(expr); |
4126 | iterflags |= OPf_STACKED; | |
4127 | } | |
4128 | else { | |
4129 | expr = mod(force_list(expr), OP_GREPSTART); | |
4130 | } | |
4131 | ||
4132 | ||
4633a7c4 | 4133 | loop = (LOOP*)list(convert(OP_ENTERITER, iterflags, |
89ea2908 | 4134 | append_elem(OP_LIST, expr, scalar(sv)))); |
85e6fe83 | 4135 | assert(!loop->op_next); |
b7dc083c | 4136 | #ifdef PL_OP_SLAB_ALLOC |
155aba94 GS |
4137 | { |
4138 | LOOP *tmp; | |
4139 | NewOp(1234,tmp,1,LOOP); | |
4140 | Copy(loop,tmp,1,LOOP); | |
4141 | loop = tmp; | |
4142 | } | |
b7dc083c | 4143 | #else |
85e6fe83 | 4144 | Renew(loop, 1, LOOP); |
1c846c1f | 4145 | #endif |
85e6fe83 | 4146 | loop->op_targ = padoff; |
fb73857a | 4147 | wop = newWHILEOP(flags, 1, loop, forline, newOP(OP_ITER, 0), block, cont); |
3280af22 | 4148 | PL_copline = forline; |
fb73857a | 4149 | return newSTATEOP(0, label, wop); |
79072805 LW |
4150 | } |
4151 | ||
8990e307 | 4152 | OP* |
864dbfa3 | 4153 | Perl_newLOOPEX(pTHX_ I32 type, OP *label) |
8990e307 | 4154 | { |
11343788 | 4155 | OP *o; |
2d8e6c8d GS |
4156 | STRLEN n_a; |
4157 | ||
8990e307 | 4158 | if (type != OP_GOTO || label->op_type == OP_CONST) { |
cdaebead MB |
4159 | /* "last()" means "last" */ |
4160 | if (label->op_type == OP_STUB && (label->op_flags & OPf_PARENS)) | |
4161 | o = newOP(type, OPf_SPECIAL); | |
4162 | else { | |
4163 | o = newPVOP(type, 0, savepv(label->op_type == OP_CONST | |
2d8e6c8d | 4164 | ? SvPVx(((SVOP*)label)->op_sv, n_a) |
cdaebead MB |
4165 | : "")); |
4166 | } | |
8990e307 LW |
4167 | op_free(label); |
4168 | } | |
4169 | else { | |
a0d0e21e LW |
4170 | if (label->op_type == OP_ENTERSUB) |
4171 | label = newUNOP(OP_REFGEN, 0, mod(label, OP_REFGEN)); | |
11343788 | 4172 | o = newUNOP(type, OPf_STACKED, label); |
8990e307 | 4173 | } |
3280af22 | 4174 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 | 4175 | return o; |
8990e307 LW |
4176 | } |
4177 | ||
79072805 | 4178 | void |
864dbfa3 | 4179 | Perl_cv_undef(pTHX_ CV *cv) |
79072805 | 4180 | { |
11343788 | 4181 | #ifdef USE_THREADS |
e858de61 MB |
4182 | if (CvMUTEXP(cv)) { |
4183 | MUTEX_DESTROY(CvMUTEXP(cv)); | |
4184 | Safefree(CvMUTEXP(cv)); | |
4185 | CvMUTEXP(cv) = 0; | |
4186 | } | |
11343788 MB |
4187 | #endif /* USE_THREADS */ |
4188 | ||
a0d0e21e | 4189 | if (!CvXSUB(cv) && CvROOT(cv)) { |
11343788 MB |
4190 | #ifdef USE_THREADS |
4191 | if (CvDEPTH(cv) || (CvOWNER(cv) && CvOWNER(cv) != thr)) | |
cea2e8a9 | 4192 | Perl_croak(aTHX_ "Can't undef active subroutine"); |
11343788 | 4193 | #else |
a0d0e21e | 4194 | if (CvDEPTH(cv)) |
cea2e8a9 | 4195 | Perl_croak(aTHX_ "Can't undef active subroutine"); |
11343788 | 4196 | #endif /* USE_THREADS */ |
8990e307 | 4197 | ENTER; |
a0d0e21e | 4198 | |
7766f137 | 4199 | SAVEVPTR(PL_curpad); |
3280af22 | 4200 | PL_curpad = 0; |
a0d0e21e | 4201 | |
282f25c9 | 4202 | op_free(CvROOT(cv)); |
79072805 | 4203 | CvROOT(cv) = Nullop; |
8990e307 | 4204 | LEAVE; |
79072805 | 4205 | } |
1d5db326 | 4206 | SvPOK_off((SV*)cv); /* forget prototype */ |
8e07c86e | 4207 | CvGV(cv) = Nullgv; |
282f25c9 JH |
4208 | /* Since closure prototypes have the same lifetime as the containing |
4209 | * CV, they don't hold a refcount on the outside CV. This avoids | |
4210 | * the refcount loop between the outer CV (which keeps a refcount to | |
4211 | * the closure prototype in the pad entry for pp_anoncode()) and the | |
4212 | * closure prototype, and the ensuing memory leak. --GSAR */ | |
4213 | if (!CvANON(cv) || CvCLONED(cv)) | |
4214 | SvREFCNT_dec(CvOUTSIDE(cv)); | |
8e07c86e | 4215 | CvOUTSIDE(cv) = Nullcv; |
beab0874 JT |
4216 | if (CvCONST(cv)) { |
4217 | SvREFCNT_dec((SV*)CvXSUBANY(cv).any_ptr); | |
4218 | CvCONST_off(cv); | |
4219 | } | |
8e07c86e | 4220 | if (CvPADLIST(cv)) { |
8ebc5c01 | 4221 | /* may be during global destruction */ |
4222 | if (SvREFCNT(CvPADLIST(cv))) { | |
93965878 | 4223 | I32 i = AvFILLp(CvPADLIST(cv)); |
8ebc5c01 | 4224 | while (i >= 0) { |
4225 | SV** svp = av_fetch(CvPADLIST(cv), i--, FALSE); | |
46fc3d4c | 4226 | SV* sv = svp ? *svp : Nullsv; |
4227 | if (!sv) | |
4228 | continue; | |
3280af22 NIS |
4229 | if (sv == (SV*)PL_comppad_name) |
4230 | PL_comppad_name = Nullav; | |
4231 | else if (sv == (SV*)PL_comppad) { | |
4232 | PL_comppad = Nullav; | |
4233 | PL_curpad = Null(SV**); | |
46fc3d4c | 4234 | } |
4235 | SvREFCNT_dec(sv); | |
8ebc5c01 | 4236 | } |
4237 | SvREFCNT_dec((SV*)CvPADLIST(cv)); | |
8e07c86e | 4238 | } |
8e07c86e AD |
4239 | CvPADLIST(cv) = Nullav; |
4240 | } | |
a2c090b3 | 4241 | CvFLAGS(cv) = 0; |
79072805 LW |
4242 | } |
4243 | ||
9cbac4c7 | 4244 | #ifdef DEBUG_CLOSURES |
76e3520e | 4245 | STATIC void |
743e66e6 | 4246 | S_cv_dump(pTHX_ CV *cv) |
5f05dabc | 4247 | { |
62fde642 | 4248 | #ifdef DEBUGGING |
5f05dabc | 4249 | CV *outside = CvOUTSIDE(cv); |
4250 | AV* padlist = CvPADLIST(cv); | |
4fdae800 | 4251 | AV* pad_name; |
4252 | AV* pad; | |
4253 | SV** pname; | |
4254 | SV** ppad; | |
5f05dabc | 4255 | I32 ix; |
4256 | ||
b900a521 JH |
4257 | PerlIO_printf(Perl_debug_log, |
4258 | "\tCV=0x%"UVxf" (%s), OUTSIDE=0x%"UVxf" (%s)\n", | |
4259 | PTR2UV(cv), | |
ab50184a | 4260 | (CvANON(cv) ? "ANON" |
6b88bc9c | 4261 | : (cv == PL_main_cv) ? "MAIN" |
33b8ce05 | 4262 | : CvUNIQUE(cv) ? "UNIQUE" |
44a8e56a | 4263 | : CvGV(cv) ? GvNAME(CvGV(cv)) : "UNDEFINED"), |
b900a521 | 4264 | PTR2UV(outside), |
ab50184a CS |
4265 | (!outside ? "null" |
4266 | : CvANON(outside) ? "ANON" | |
6b88bc9c | 4267 | : (outside == PL_main_cv) ? "MAIN" |
07055b4c | 4268 | : CvUNIQUE(outside) ? "UNIQUE" |
44a8e56a | 4269 | : CvGV(outside) ? GvNAME(CvGV(outside)) : "UNDEFINED")); |
5f05dabc | 4270 | |
4fdae800 | 4271 | if (!padlist) |
4272 | return; | |
4273 | ||
4274 | pad_name = (AV*)*av_fetch(padlist, 0, FALSE); | |
4275 | pad = (AV*)*av_fetch(padlist, 1, FALSE); | |
4276 | pname = AvARRAY(pad_name); | |
4277 | ppad = AvARRAY(pad); | |
4278 | ||
93965878 | 4279 | for (ix = 1; ix <= AvFILLp(pad_name); ix++) { |
5f05dabc | 4280 | if (SvPOK(pname[ix])) |
b900a521 JH |
4281 | PerlIO_printf(Perl_debug_log, |
4282 | "\t%4d. 0x%"UVxf" (%s\"%s\" %"IVdf"-%"IVdf")\n", | |
894356b3 | 4283 | (int)ix, PTR2UV(ppad[ix]), |
4fdae800 | 4284 | SvFAKE(pname[ix]) ? "FAKE " : "", |
4285 | SvPVX(pname[ix]), | |
b900a521 JH |
4286 | (IV)I_32(SvNVX(pname[ix])), |
4287 | SvIVX(pname[ix])); | |
5f05dabc | 4288 | } |
743e66e6 | 4289 | #endif /* DEBUGGING */ |
62fde642 | 4290 | } |
9cbac4c7 | 4291 | #endif /* DEBUG_CLOSURES */ |
5f05dabc | 4292 | |
76e3520e | 4293 | STATIC CV * |
cea2e8a9 | 4294 | S_cv_clone2(pTHX_ CV *proto, CV *outside) |
748a9306 LW |
4295 | { |
4296 | AV* av; | |
4297 | I32 ix; | |
4298 | AV* protopadlist = CvPADLIST(proto); | |
4299 | AV* protopad_name = (AV*)*av_fetch(protopadlist, 0, FALSE); | |
4300 | AV* protopad = (AV*)*av_fetch(protopadlist, 1, FALSE); | |
5f05dabc | 4301 | SV** pname = AvARRAY(protopad_name); |
4302 | SV** ppad = AvARRAY(protopad); | |
93965878 NIS |
4303 | I32 fname = AvFILLp(protopad_name); |
4304 | I32 fpad = AvFILLp(protopad); | |
748a9306 LW |
4305 | AV* comppadlist; |
4306 | CV* cv; | |
4307 | ||
07055b4c CS |
4308 | assert(!CvUNIQUE(proto)); |
4309 | ||
748a9306 | 4310 | ENTER; |
354992b1 | 4311 | SAVECOMPPAD(); |
3280af22 NIS |
4312 | SAVESPTR(PL_comppad_name); |
4313 | SAVESPTR(PL_compcv); | |
748a9306 | 4314 | |
3280af22 | 4315 | cv = PL_compcv = (CV*)NEWSV(1104,0); |
fa83b5b6 | 4316 | sv_upgrade((SV *)cv, SvTYPE(proto)); |
a57ec3bd | 4317 | CvFLAGS(cv) = CvFLAGS(proto) & ~CVf_CLONE; |
a5f75d66 | 4318 | CvCLONED_on(cv); |
748a9306 | 4319 | |
11343788 | 4320 | #ifdef USE_THREADS |
12ca11f6 | 4321 | New(666, CvMUTEXP(cv), 1, perl_mutex); |
11343788 | 4322 | MUTEX_INIT(CvMUTEXP(cv)); |
11343788 MB |
4323 | CvOWNER(cv) = 0; |
4324 | #endif /* USE_THREADS */ | |
57843af0 | 4325 | CvFILE(cv) = CvFILE(proto); |
65c50114 | 4326 | CvGV(cv) = CvGV(proto); |
748a9306 | 4327 | CvSTASH(cv) = CvSTASH(proto); |
282f25c9 | 4328 | CvROOT(cv) = OpREFCNT_inc(CvROOT(proto)); |
748a9306 | 4329 | CvSTART(cv) = CvSTART(proto); |
5f05dabc | 4330 | if (outside) |
4331 | CvOUTSIDE(cv) = (CV*)SvREFCNT_inc(outside); | |
748a9306 | 4332 | |
68dc0745 | 4333 | if (SvPOK(proto)) |
4334 | sv_setpvn((SV*)cv, SvPVX(proto), SvCUR(proto)); | |
4335 | ||
3280af22 | 4336 | PL_comppad_name = newAV(); |
46fc3d4c | 4337 | for (ix = fname; ix >= 0; ix--) |
3280af22 | 4338 | av_store(PL_comppad_name, ix, SvREFCNT_inc(pname[ix])); |
748a9306 | 4339 | |
3280af22 | 4340 | PL_comppad = newAV(); |
748a9306 LW |
4341 | |
4342 | comppadlist = newAV(); | |
4343 | AvREAL_off(comppadlist); | |
3280af22 NIS |
4344 | av_store(comppadlist, 0, (SV*)PL_comppad_name); |
4345 | av_store(comppadlist, 1, (SV*)PL_comppad); | |
748a9306 | 4346 | CvPADLIST(cv) = comppadlist; |
3280af22 NIS |
4347 | av_fill(PL_comppad, AvFILLp(protopad)); |
4348 | PL_curpad = AvARRAY(PL_comppad); | |
748a9306 LW |
4349 | |
4350 | av = newAV(); /* will be @_ */ | |
4351 | av_extend(av, 0); | |
3280af22 | 4352 | av_store(PL_comppad, 0, (SV*)av); |
748a9306 LW |
4353 | AvFLAGS(av) = AVf_REIFY; |
4354 | ||
9607fc9c | 4355 | for (ix = fpad; ix > 0; ix--) { |
4356 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; | |
3280af22 | 4357 | if (namesv && namesv != &PL_sv_undef) { |
aa689395 | 4358 | char *name = SvPVX(namesv); /* XXX */ |
4359 | if (SvFLAGS(namesv) & SVf_FAKE) { /* lexical from outside? */ | |
4360 | I32 off = pad_findlex(name, ix, SvIVX(namesv), | |
2680586e | 4361 | CvOUTSIDE(cv), cxstack_ix, 0, 0); |
5f05dabc | 4362 | if (!off) |
3280af22 | 4363 | PL_curpad[ix] = SvREFCNT_inc(ppad[ix]); |
5f05dabc | 4364 | else if (off != ix) |
cea2e8a9 | 4365 | Perl_croak(aTHX_ "panic: cv_clone: %s", name); |
748a9306 LW |
4366 | } |
4367 | else { /* our own lexical */ | |
aa689395 | 4368 | SV* sv; |
5f05dabc | 4369 | if (*name == '&') { |
4370 | /* anon code -- we'll come back for it */ | |
4371 | sv = SvREFCNT_inc(ppad[ix]); | |
4372 | } | |
4373 | else if (*name == '@') | |
4374 | sv = (SV*)newAV(); | |
748a9306 | 4375 | else if (*name == '%') |
5f05dabc | 4376 | sv = (SV*)newHV(); |
748a9306 | 4377 | else |
5f05dabc | 4378 | sv = NEWSV(0,0); |
4379 | if (!SvPADBUSY(sv)) | |
4380 | SvPADMY_on(sv); | |
3280af22 | 4381 | PL_curpad[ix] = sv; |
748a9306 LW |
4382 | } |
4383 | } | |
7766f137 | 4384 | else if (IS_PADGV(ppad[ix]) || IS_PADCONST(ppad[ix])) { |
743e66e6 GS |
4385 | PL_curpad[ix] = SvREFCNT_inc(ppad[ix]); |
4386 | } | |
748a9306 | 4387 | else { |
aa689395 | 4388 | SV* sv = NEWSV(0,0); |
748a9306 | 4389 | SvPADTMP_on(sv); |
3280af22 | 4390 | PL_curpad[ix] = sv; |
748a9306 LW |
4391 | } |
4392 | } | |
4393 | ||
5f05dabc | 4394 | /* Now that vars are all in place, clone nested closures. */ |
4395 | ||
9607fc9c | 4396 | for (ix = fpad; ix > 0; ix--) { |
4397 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; | |
aa689395 | 4398 | if (namesv |
3280af22 | 4399 | && namesv != &PL_sv_undef |
aa689395 | 4400 | && !(SvFLAGS(namesv) & SVf_FAKE) |
4401 | && *SvPVX(namesv) == '&' | |
5f05dabc | 4402 | && CvCLONE(ppad[ix])) |
4403 | { | |
4404 | CV *kid = cv_clone2((CV*)ppad[ix], cv); | |
4405 | SvREFCNT_dec(ppad[ix]); | |
4406 | CvCLONE_on(kid); | |
4407 | SvPADMY_on(kid); | |
3280af22 | 4408 | PL_curpad[ix] = (SV*)kid; |
748a9306 LW |
4409 | } |
4410 | } | |
4411 | ||
5f05dabc | 4412 | #ifdef DEBUG_CLOSURES |
ab50184a CS |
4413 | PerlIO_printf(Perl_debug_log, "Cloned inside:\n"); |
4414 | cv_dump(outside); | |
4415 | PerlIO_printf(Perl_debug_log, " from:\n"); | |
5f05dabc | 4416 | cv_dump(proto); |
ab50184a | 4417 | PerlIO_printf(Perl_debug_log, " to:\n"); |
5f05dabc | 4418 | cv_dump(cv); |
4419 | #endif | |
4420 | ||
748a9306 | 4421 | LEAVE; |
beab0874 JT |
4422 | |
4423 | if (CvCONST(cv)) { | |
4424 | SV* const_sv = op_const_sv(CvSTART(cv), cv); | |
4425 | assert(const_sv); | |
4426 | /* constant sub () { $x } closing over $x - see lib/constant.pm */ | |
4427 | SvREFCNT_dec(cv); | |
4428 | cv = newCONSTSUB(CvSTASH(proto), 0, const_sv); | |
4429 | } | |
4430 | ||
748a9306 LW |
4431 | return cv; |
4432 | } | |
4433 | ||
4434 | CV * | |
864dbfa3 | 4435 | Perl_cv_clone(pTHX_ CV *proto) |
5f05dabc | 4436 | { |
b099ddc0 | 4437 | CV *cv; |
1feb2720 | 4438 | LOCK_CRED_MUTEX; /* XXX create separate mutex */ |
b099ddc0 | 4439 | cv = cv_clone2(proto, CvOUTSIDE(proto)); |
1feb2720 | 4440 | UNLOCK_CRED_MUTEX; /* XXX create separate mutex */ |
b099ddc0 | 4441 | return cv; |
5f05dabc | 4442 | } |
4443 | ||
3fe9a6f1 | 4444 | void |
864dbfa3 | 4445 | Perl_cv_ckproto(pTHX_ CV *cv, GV *gv, char *p) |
3fe9a6f1 | 4446 | { |
e476b1b5 | 4447 | if (((!p != !SvPOK(cv)) || (p && strNE(p, SvPVX(cv)))) && ckWARN_d(WARN_PROTOTYPE)) { |
46fc3d4c | 4448 | SV* msg = sv_newmortal(); |
3fe9a6f1 | 4449 | SV* name = Nullsv; |
4450 | ||
4451 | if (gv) | |
46fc3d4c | 4452 | gv_efullname3(name = sv_newmortal(), gv, Nullch); |
4453 | sv_setpv(msg, "Prototype mismatch:"); | |
4454 | if (name) | |
894356b3 | 4455 | Perl_sv_catpvf(aTHX_ msg, " sub %"SVf, name); |
3fe9a6f1 | 4456 | if (SvPOK(cv)) |
cea2e8a9 | 4457 | Perl_sv_catpvf(aTHX_ msg, " (%s)", SvPVX(cv)); |
46fc3d4c | 4458 | sv_catpv(msg, " vs "); |
4459 | if (p) | |
cea2e8a9 | 4460 | Perl_sv_catpvf(aTHX_ msg, "(%s)", p); |
46fc3d4c | 4461 | else |
4462 | sv_catpv(msg, "none"); | |
e476b1b5 | 4463 | Perl_warner(aTHX_ WARN_PROTOTYPE, "%"SVf, msg); |
3fe9a6f1 | 4464 | } |
4465 | } | |
4466 | ||
beab0874 JT |
4467 | static void const_sv_xsub(pTHXo_ CV* cv); |
4468 | ||
4469 | /* | |
4470 | =for apidoc cv_const_sv | |
4471 | ||
4472 | If C<cv> is a constant sub eligible for inlining. returns the constant | |
4473 | value returned by the sub. Otherwise, returns NULL. | |
4474 | ||
4475 | Constant subs can be created with C<newCONSTSUB> or as described in | |
4476 | L<perlsub/"Constant Functions">. | |
4477 | ||
4478 | =cut | |
4479 | */ | |
760ac839 | 4480 | SV * |
864dbfa3 | 4481 | Perl_cv_const_sv(pTHX_ CV *cv) |
760ac839 | 4482 | { |
beab0874 | 4483 | if (!cv || !CvCONST(cv)) |
54310121 | 4484 | return Nullsv; |
beab0874 | 4485 | return (SV*)CvXSUBANY(cv).any_ptr; |
fe5e78ed | 4486 | } |
760ac839 | 4487 | |
fe5e78ed | 4488 | SV * |
864dbfa3 | 4489 | Perl_op_const_sv(pTHX_ OP *o, CV *cv) |
fe5e78ed GS |
4490 | { |
4491 | SV *sv = Nullsv; | |
4492 | ||
0f79a09d | 4493 | if (!o) |
fe5e78ed | 4494 | return Nullsv; |
1c846c1f NIS |
4495 | |
4496 | if (o->op_type == OP_LINESEQ && cLISTOPo->op_first) | |
fe5e78ed GS |
4497 | o = cLISTOPo->op_first->op_sibling; |
4498 | ||
4499 | for (; o; o = o->op_next) { | |
54310121 | 4500 | OPCODE type = o->op_type; |
fe5e78ed | 4501 | |
1c846c1f | 4502 | if (sv && o->op_next == o) |
fe5e78ed | 4503 | return sv; |
e576b457 JT |
4504 | if (o->op_next != o) { |
4505 | if (type == OP_NEXTSTATE || type == OP_NULL || type == OP_PUSHMARK) | |
4506 | continue; | |
4507 | if (type == OP_DBSTATE) | |
4508 | continue; | |
4509 | } | |
54310121 | 4510 | if (type == OP_LEAVESUB || type == OP_RETURN) |
4511 | break; | |
4512 | if (sv) | |
4513 | return Nullsv; | |
7766f137 | 4514 | if (type == OP_CONST && cSVOPo->op_sv) |
5dc0d613 | 4515 | sv = cSVOPo->op_sv; |
7766f137 | 4516 | else if ((type == OP_PADSV || type == OP_CONST) && cv) { |
e858de61 MB |
4517 | AV* padav = (AV*)(AvARRAY(CvPADLIST(cv))[1]); |
4518 | sv = padav ? AvARRAY(padav)[o->op_targ] : Nullsv; | |
beab0874 JT |
4519 | if (!sv) |
4520 | return Nullsv; | |
4521 | if (CvCONST(cv)) { | |
4522 | /* We get here only from cv_clone2() while creating a closure. | |
4523 | Copy the const value here instead of in cv_clone2 so that | |
4524 | SvREADONLY_on doesn't lead to problems when leaving | |
4525 | scope. | |
4526 | */ | |
4527 | sv = newSVsv(sv); | |
4528 | } | |
4529 | if (!SvREADONLY(sv) && SvREFCNT(sv) > 1) | |
54310121 | 4530 | return Nullsv; |
760ac839 | 4531 | } |
54310121 | 4532 | else |
4533 | return Nullsv; | |
760ac839 | 4534 | } |
5aabfad6 | 4535 | if (sv) |
4536 | SvREADONLY_on(sv); | |
760ac839 LW |
4537 | return sv; |
4538 | } | |
4539 | ||
09bef843 SB |
4540 | void |
4541 | Perl_newMYSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, OP *block) | |
4542 | { | |
4543 | if (o) | |
4544 | SAVEFREEOP(o); | |
4545 | if (proto) | |
4546 | SAVEFREEOP(proto); | |
4547 | if (attrs) | |
4548 | SAVEFREEOP(attrs); | |
4549 | if (block) | |
4550 | SAVEFREEOP(block); | |
4551 | Perl_croak(aTHX_ "\"my sub\" not yet implemented"); | |
4552 | } | |
4553 | ||
748a9306 | 4554 | CV * |
864dbfa3 | 4555 | Perl_newSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *block) |
79072805 | 4556 | { |
09bef843 SB |
4557 | return Perl_newATTRSUB(aTHX_ floor, o, proto, Nullop, block); |
4558 | } | |
4559 | ||
4560 | CV * | |
4561 | Perl_newATTRSUB(pTHX_ I32 floor, OP *o, OP *proto, OP *attrs, OP *block) | |
4562 | { | |
2d8e6c8d | 4563 | STRLEN n_a; |
83ee9e09 GS |
4564 | char *name; |
4565 | char *aname; | |
4566 | GV *gv; | |
2d8e6c8d | 4567 | char *ps = proto ? SvPVx(((SVOP*)proto)->op_sv, n_a) : Nullch; |
a2008d6d | 4568 | register CV *cv=0; |
a0d0e21e | 4569 | I32 ix; |
beab0874 | 4570 | SV *const_sv; |
79072805 | 4571 | |
83ee9e09 GS |
4572 | name = o ? SvPVx(cSVOPo->op_sv, n_a) : Nullch; |
4573 | if (!name && PERLDB_NAMEANON && CopLINE(PL_curcop)) { | |
4574 | SV *sv = sv_newmortal(); | |
4575 | Perl_sv_setpvf(aTHX_ sv, "__ANON__[%s:%"IVdf"]", | |
4576 | CopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); | |
4577 | aname = SvPVX(sv); | |
4578 | } | |
4579 | else | |
4580 | aname = Nullch; | |
4581 | gv = gv_fetchpv(name ? name : (aname ? aname : "__ANON__"), | |
4582 | GV_ADDMULTI | ((block || attrs) ? 0 : GV_NOINIT), | |
4583 | SVt_PVCV); | |
4584 | ||
11343788 | 4585 | if (o) |
5dc0d613 | 4586 | SAVEFREEOP(o); |
3fe9a6f1 | 4587 | if (proto) |
4588 | SAVEFREEOP(proto); | |
09bef843 SB |
4589 | if (attrs) |
4590 | SAVEFREEOP(attrs); | |
3fe9a6f1 | 4591 | |
09bef843 | 4592 | if (SvTYPE(gv) != SVt_PVGV) { /* Maybe prototype now, and had at |
55d729e4 GS |
4593 | maximum a prototype before. */ |
4594 | if (SvTYPE(gv) > SVt_NULL) { | |
0453d815 | 4595 | if (!SvPOK((SV*)gv) && !(SvIOK((SV*)gv) && SvIVX((SV*)gv) == -1) |
e476b1b5 | 4596 | && ckWARN_d(WARN_PROTOTYPE)) |
f248d071 | 4597 | { |
e476b1b5 | 4598 | Perl_warner(aTHX_ WARN_PROTOTYPE, "Runaway prototype"); |
f248d071 | 4599 | } |
55d729e4 GS |
4600 | cv_ckproto((CV*)gv, NULL, ps); |
4601 | } | |
4602 | if (ps) | |
4603 | sv_setpv((SV*)gv, ps); | |
4604 | else | |
4605 | sv_setiv((SV*)gv, -1); | |
3280af22 NIS |
4606 | SvREFCNT_dec(PL_compcv); |
4607 | cv = PL_compcv = NULL; | |
4608 | PL_sub_generation++; | |
beab0874 | 4609 | goto done; |
55d729e4 GS |
4610 | } |
4611 | ||
beab0874 JT |
4612 | cv = (!name || GvCVGEN(gv)) ? Nullcv : GvCV(gv); |
4613 | ||
5bd07a3d DM |
4614 | #ifdef GV_SHARED_CHECK |
4615 | if (cv && GvSHARED(gv) && SvREADONLY(cv)) { | |
4616 | Perl_croak(aTHX_ "Can't define subroutine %s (GV is shared)", name); | |
4617 | } | |
4618 | #endif | |
4619 | ||
beab0874 JT |
4620 | if (!block || !ps || *ps || attrs) |
4621 | const_sv = Nullsv; | |
4622 | else | |
4623 | const_sv = op_const_sv(block, Nullcv); | |
4624 | ||
4625 | if (cv) { | |
60ed1d8c | 4626 | bool exists = CvROOT(cv) || CvXSUB(cv); |
5bd07a3d DM |
4627 | |
4628 | #ifdef GV_SHARED_CHECK | |
4629 | if (exists && GvSHARED(gv)) { | |
4630 | Perl_croak(aTHX_ "Can't redefine shared subroutine %s", name); | |
4631 | } | |
4632 | #endif | |
4633 | ||
60ed1d8c GS |
4634 | /* if the subroutine doesn't exist and wasn't pre-declared |
4635 | * with a prototype, assume it will be AUTOLOADed, | |
4636 | * skipping the prototype check | |
4637 | */ | |
4638 | if (exists || SvPOK(cv)) | |
01ec43d0 | 4639 | cv_ckproto(cv, gv, ps); |
68dc0745 | 4640 | /* already defined (or promised)? */ |
60ed1d8c | 4641 | if (exists || GvASSUMECV(gv)) { |
09bef843 | 4642 | if (!block && !attrs) { |
aa689395 | 4643 | /* just a "sub foo;" when &foo is already defined */ |
3280af22 | 4644 | SAVEFREESV(PL_compcv); |
aa689395 | 4645 | goto done; |
4646 | } | |
7bac28a0 | 4647 | /* ahem, death to those who redefine active sort subs */ |
3280af22 | 4648 | if (PL_curstackinfo->si_type == PERLSI_SORT && PL_sortcop == CvSTART(cv)) |
cea2e8a9 | 4649 | Perl_croak(aTHX_ "Can't redefine active sort subroutine %s", name); |
beab0874 JT |
4650 | if (block) { |
4651 | if (ckWARN(WARN_REDEFINE) | |
4652 | || (CvCONST(cv) | |
4653 | && (!const_sv || sv_cmp(cv_const_sv(cv), const_sv)))) | |
4654 | { | |
4655 | line_t oldline = CopLINE(PL_curcop); | |
4656 | CopLINE_set(PL_curcop, PL_copline); | |
4657 | Perl_warner(aTHX_ WARN_REDEFINE, | |
4658 | CvCONST(cv) ? "Constant subroutine %s redefined" | |
4659 | : "Subroutine %s redefined", name); | |
4660 | CopLINE_set(PL_curcop, oldline); | |
4661 | } | |
4662 | SvREFCNT_dec(cv); | |
4663 | cv = Nullcv; | |
79072805 | 4664 | } |
79072805 LW |
4665 | } |
4666 | } | |
beab0874 JT |
4667 | if (const_sv) { |
4668 | SvREFCNT_inc(const_sv); | |
4669 | if (cv) { | |
0768512c | 4670 | assert(!CvROOT(cv) && !CvCONST(cv)); |
beab0874 JT |
4671 | sv_setpv((SV*)cv, ""); /* prototype is "" */ |
4672 | CvXSUBANY(cv).any_ptr = const_sv; | |
4673 | CvXSUB(cv) = const_sv_xsub; | |
4674 | CvCONST_on(cv); | |
beab0874 JT |
4675 | } |
4676 | else { | |
4677 | GvCV(gv) = Nullcv; | |
4678 | cv = newCONSTSUB(NULL, name, const_sv); | |
4679 | } | |
4680 | op_free(block); | |
4681 | SvREFCNT_dec(PL_compcv); | |
4682 | PL_compcv = NULL; | |
4683 | PL_sub_generation++; | |
4684 | goto done; | |
4685 | } | |
09bef843 SB |
4686 | if (attrs) { |
4687 | HV *stash; | |
4688 | SV *rcv; | |
4689 | ||
4690 | /* Need to do a C<use attributes $stash_of_cv,\&cv,@attrs> | |
4691 | * before we clobber PL_compcv. | |
4692 | */ | |
4693 | if (cv && !block) { | |
4694 | rcv = (SV*)cv; | |
4695 | if (CvGV(cv) && GvSTASH(CvGV(cv)) && HvNAME(GvSTASH(CvGV(cv)))) | |
4696 | stash = GvSTASH(CvGV(cv)); | |
4697 | else if (CvSTASH(cv) && HvNAME(CvSTASH(cv))) | |
4698 | stash = CvSTASH(cv); | |
4699 | else | |
4700 | stash = PL_curstash; | |
4701 | } | |
4702 | else { | |
4703 | /* possibly about to re-define existing subr -- ignore old cv */ | |
4704 | rcv = (SV*)PL_compcv; | |
4705 | if (name && GvSTASH(gv) && HvNAME(GvSTASH(gv))) | |
4706 | stash = GvSTASH(gv); | |
4707 | else | |
4708 | stash = PL_curstash; | |
4709 | } | |
4710 | apply_attrs(stash, rcv, attrs); | |
4711 | } | |
a0d0e21e | 4712 | if (cv) { /* must reuse cv if autoloaded */ |
09bef843 SB |
4713 | if (!block) { |
4714 | /* got here with just attrs -- work done, so bug out */ | |
4715 | SAVEFREESV(PL_compcv); | |
4716 | goto done; | |
4717 | } | |
4633a7c4 | 4718 | cv_undef(cv); |
3280af22 NIS |
4719 | CvFLAGS(cv) = CvFLAGS(PL_compcv); |
4720 | CvOUTSIDE(cv) = CvOUTSIDE(PL_compcv); | |
4721 | CvOUTSIDE(PL_compcv) = 0; | |
4722 | CvPADLIST(cv) = CvPADLIST(PL_compcv); | |
4723 | CvPADLIST(PL_compcv) = 0; | |
282f25c9 JH |
4724 | /* inner references to PL_compcv must be fixed up ... */ |
4725 | { | |
4726 | AV *padlist = CvPADLIST(cv); | |
4727 | AV *comppad_name = (AV*)AvARRAY(padlist)[0]; | |
4728 | AV *comppad = (AV*)AvARRAY(padlist)[1]; | |
4729 | SV **namepad = AvARRAY(comppad_name); | |
4730 | SV **curpad = AvARRAY(comppad); | |
4731 | for (ix = AvFILLp(comppad_name); ix > 0; ix--) { | |
4732 | SV *namesv = namepad[ix]; | |
4733 | if (namesv && namesv != &PL_sv_undef | |
4734 | && *SvPVX(namesv) == '&') | |
4735 | { | |
4736 | CV *innercv = (CV*)curpad[ix]; | |
4737 | if (CvOUTSIDE(innercv) == PL_compcv) { | |
4738 | CvOUTSIDE(innercv) = cv; | |
4739 | if (!CvANON(innercv) || CvCLONED(innercv)) { | |
4740 | (void)SvREFCNT_inc(cv); | |
4741 | SvREFCNT_dec(PL_compcv); | |
4742 | } | |
4743 | } | |
4744 | } | |
4745 | } | |
4746 | } | |
4747 | /* ... before we throw it away */ | |
3280af22 | 4748 | SvREFCNT_dec(PL_compcv); |
a0d0e21e LW |
4749 | } |
4750 | else { | |
3280af22 | 4751 | cv = PL_compcv; |
44a8e56a | 4752 | if (name) { |
4753 | GvCV(gv) = cv; | |
4754 | GvCVGEN(gv) = 0; | |
3280af22 | 4755 | PL_sub_generation++; |
44a8e56a | 4756 | } |
a0d0e21e | 4757 | } |
65c50114 | 4758 | CvGV(cv) = gv; |
57843af0 | 4759 | CvFILE(cv) = CopFILE(PL_curcop); |
3280af22 | 4760 | CvSTASH(cv) = PL_curstash; |
11343788 MB |
4761 | #ifdef USE_THREADS |
4762 | CvOWNER(cv) = 0; | |
1cfa4ec7 | 4763 | if (!CvMUTEXP(cv)) { |
f6aaf501 | 4764 | New(666, CvMUTEXP(cv), 1, perl_mutex); |
1cfa4ec7 GS |
4765 | MUTEX_INIT(CvMUTEXP(cv)); |
4766 | } | |
11343788 | 4767 | #endif /* USE_THREADS */ |
8990e307 | 4768 | |
3fe9a6f1 | 4769 | if (ps) |
4770 | sv_setpv((SV*)cv, ps); | |
4633a7c4 | 4771 | |
3280af22 | 4772 | if (PL_error_count) { |
c07a80fd | 4773 | op_free(block); |
4774 | block = Nullop; | |
68dc0745 | 4775 | if (name) { |
4776 | char *s = strrchr(name, ':'); | |
4777 | s = s ? s+1 : name; | |
6d4c2119 CS |
4778 | if (strEQ(s, "BEGIN")) { |
4779 | char *not_safe = | |
4780 | "BEGIN not safe after errors--compilation aborted"; | |
faef0170 | 4781 | if (PL_in_eval & EVAL_KEEPERR) |
cea2e8a9 | 4782 | Perl_croak(aTHX_ not_safe); |
6d4c2119 CS |
4783 | else { |
4784 | /* force display of errors found but not reported */ | |
38a03e6e | 4785 | sv_catpv(ERRSV, not_safe); |
cea2e8a9 | 4786 | Perl_croak(aTHX_ "%s", SvPVx(ERRSV, n_a)); |
6d4c2119 CS |
4787 | } |
4788 | } | |
68dc0745 | 4789 | } |
c07a80fd | 4790 | } |
beab0874 JT |
4791 | if (!block) |
4792 | goto done; | |
a0d0e21e | 4793 | |
3280af22 NIS |
4794 | if (AvFILLp(PL_comppad_name) < AvFILLp(PL_comppad)) |
4795 | av_store(PL_comppad_name, AvFILLp(PL_comppad), Nullsv); | |
a0d0e21e | 4796 | |
7766f137 | 4797 | if (CvLVALUE(cv)) { |
78f9721b SM |
4798 | CvROOT(cv) = newUNOP(OP_LEAVESUBLV, 0, |
4799 | mod(scalarseq(block), OP_LEAVESUBLV)); | |
7766f137 GS |
4800 | } |
4801 | else { | |
4802 | CvROOT(cv) = newUNOP(OP_LEAVESUB, 0, scalarseq(block)); | |
4803 | } | |
4804 | CvROOT(cv)->op_private |= OPpREFCOUNTED; | |
4805 | OpREFCNT_set(CvROOT(cv), 1); | |
4806 | CvSTART(cv) = LINKLIST(CvROOT(cv)); | |
4807 | CvROOT(cv)->op_next = 0; | |
4808 | peep(CvSTART(cv)); | |
4809 | ||
4810 | /* now that optimizer has done its work, adjust pad values */ | |
54310121 | 4811 | if (CvCLONE(cv)) { |
3280af22 NIS |
4812 | SV **namep = AvARRAY(PL_comppad_name); |
4813 | for (ix = AvFILLp(PL_comppad); ix > 0; ix--) { | |
54310121 | 4814 | SV *namesv; |
4815 | ||
7766f137 | 4816 | if (SvIMMORTAL(PL_curpad[ix]) || IS_PADGV(PL_curpad[ix]) || IS_PADCONST(PL_curpad[ix])) |
54310121 | 4817 | continue; |
4818 | /* | |
4819 | * The only things that a clonable function needs in its | |
4820 | * pad are references to outer lexicals and anonymous subs. | |
4821 | * The rest are created anew during cloning. | |
4822 | */ | |
4823 | if (!((namesv = namep[ix]) != Nullsv && | |
3280af22 | 4824 | namesv != &PL_sv_undef && |
54310121 | 4825 | (SvFAKE(namesv) || |
4826 | *SvPVX(namesv) == '&'))) | |
4827 | { | |
3280af22 NIS |
4828 | SvREFCNT_dec(PL_curpad[ix]); |
4829 | PL_curpad[ix] = Nullsv; | |
54310121 | 4830 | } |
4831 | } | |
beab0874 JT |
4832 | assert(!CvCONST(cv)); |
4833 | if (ps && !*ps && op_const_sv(block, cv)) | |
4834 | CvCONST_on(cv); | |
a0d0e21e | 4835 | } |
54310121 | 4836 | else { |
4837 | AV *av = newAV(); /* Will be @_ */ | |
4838 | av_extend(av, 0); | |
3280af22 | 4839 | av_store(PL_comppad, 0, (SV*)av); |
54310121 | 4840 | AvFLAGS(av) = AVf_REIFY; |
79072805 | 4841 | |
3280af22 | 4842 | for (ix = AvFILLp(PL_comppad); ix > 0; ix--) { |
7766f137 | 4843 | if (SvIMMORTAL(PL_curpad[ix]) || IS_PADGV(PL_curpad[ix]) || IS_PADCONST(PL_curpad[ix])) |
54310121 | 4844 | continue; |
3280af22 NIS |
4845 | if (!SvPADMY(PL_curpad[ix])) |
4846 | SvPADTMP_on(PL_curpad[ix]); | |
54310121 | 4847 | } |
4848 | } | |
79072805 | 4849 | |
282f25c9 JH |
4850 | /* If a potential closure prototype, don't keep a refcount on outer CV. |
4851 | * This is okay as the lifetime of the prototype is tied to the | |
4852 | * lifetime of the outer CV. Avoids memory leak due to reference | |
4853 | * loop. --GSAR */ | |
4854 | if (!name) | |
4855 | SvREFCNT_dec(CvOUTSIDE(cv)); | |
4856 | ||
83ee9e09 | 4857 | if (name || aname) { |
44a8e56a | 4858 | char *s; |
83ee9e09 | 4859 | char *tname = (name ? name : aname); |
44a8e56a | 4860 | |
3280af22 | 4861 | if (PERLDB_SUBLINE && PL_curstash != PL_debstash) { |
46fc3d4c | 4862 | SV *sv = NEWSV(0,0); |
44a8e56a | 4863 | SV *tmpstr = sv_newmortal(); |
549bb64a | 4864 | GV *db_postponed = gv_fetchpv("DB::postponed", GV_ADDMULTI, SVt_PVHV); |
83ee9e09 | 4865 | CV *pcv; |
44a8e56a | 4866 | HV *hv; |
4867 | ||
ed094faf GS |
4868 | Perl_sv_setpvf(aTHX_ sv, "%s:%ld-%ld", |
4869 | CopFILE(PL_curcop), | |
cc49e20b | 4870 | (long)PL_subline, (long)CopLINE(PL_curcop)); |
44a8e56a | 4871 | gv_efullname3(tmpstr, gv, Nullch); |
3280af22 | 4872 | hv_store(GvHV(PL_DBsub), SvPVX(tmpstr), SvCUR(tmpstr), sv, 0); |
44a8e56a | 4873 | hv = GvHVn(db_postponed); |
9607fc9c | 4874 | if (HvFILL(hv) > 0 && hv_exists(hv, SvPVX(tmpstr), SvCUR(tmpstr)) |
83ee9e09 GS |
4875 | && (pcv = GvCV(db_postponed))) |
4876 | { | |
44a8e56a | 4877 | dSP; |
924508f0 | 4878 | PUSHMARK(SP); |
44a8e56a | 4879 | XPUSHs(tmpstr); |
4880 | PUTBACK; | |
83ee9e09 | 4881 | call_sv((SV*)pcv, G_DISCARD); |
44a8e56a | 4882 | } |
4883 | } | |
79072805 | 4884 | |
83ee9e09 | 4885 | if ((s = strrchr(tname,':'))) |
28757baa | 4886 | s++; |
4887 | else | |
83ee9e09 | 4888 | s = tname; |
ed094faf | 4889 | |
7d30b5c4 | 4890 | if (*s != 'B' && *s != 'E' && *s != 'C' && *s != 'I') |
ed094faf GS |
4891 | goto done; |
4892 | ||
68dc0745 | 4893 | if (strEQ(s, "BEGIN")) { |
3280af22 | 4894 | I32 oldscope = PL_scopestack_ix; |
28757baa | 4895 | ENTER; |
57843af0 GS |
4896 | SAVECOPFILE(&PL_compiling); |
4897 | SAVECOPLINE(&PL_compiling); | |
3280af22 NIS |
4898 | save_svref(&PL_rs); |
4899 | sv_setsv(PL_rs, PL_nrs); | |
28757baa | 4900 | |
3280af22 NIS |
4901 | if (!PL_beginav) |
4902 | PL_beginav = newAV(); | |
28757baa | 4903 | DEBUG_x( dump_sub(gv) ); |
ea2f84a3 GS |
4904 | av_push(PL_beginav, (SV*)cv); |
4905 | GvCV(gv) = 0; /* cv has been hijacked */ | |
3280af22 | 4906 | call_list(oldscope, PL_beginav); |
a6006777 | 4907 | |
3280af22 | 4908 | PL_curcop = &PL_compiling; |
a0ed51b3 | 4909 | PL_compiling.op_private = PL_hints; |
28757baa | 4910 | LEAVE; |
4911 | } | |
3280af22 NIS |
4912 | else if (strEQ(s, "END") && !PL_error_count) { |
4913 | if (!PL_endav) | |
4914 | PL_endav = newAV(); | |
ed094faf | 4915 | DEBUG_x( dump_sub(gv) ); |
3280af22 | 4916 | av_unshift(PL_endav, 1); |
ea2f84a3 GS |
4917 | av_store(PL_endav, 0, (SV*)cv); |
4918 | GvCV(gv) = 0; /* cv has been hijacked */ | |
28757baa | 4919 | } |
7d30b5c4 GS |
4920 | else if (strEQ(s, "CHECK") && !PL_error_count) { |
4921 | if (!PL_checkav) | |
4922 | PL_checkav = newAV(); | |
ed094faf | 4923 | DEBUG_x( dump_sub(gv) ); |
ddda08b7 GS |
4924 | if (PL_main_start && ckWARN(WARN_VOID)) |
4925 | Perl_warner(aTHX_ WARN_VOID, "Too late to run CHECK block"); | |
7d30b5c4 | 4926 | av_unshift(PL_checkav, 1); |
ea2f84a3 GS |
4927 | av_store(PL_checkav, 0, (SV*)cv); |
4928 | GvCV(gv) = 0; /* cv has been hijacked */ | |
4f25aa18 | 4929 | } |
3280af22 NIS |
4930 | else if (strEQ(s, "INIT") && !PL_error_count) { |
4931 | if (!PL_initav) | |
4932 | PL_initav = newAV(); | |
ed094faf | 4933 | DEBUG_x( dump_sub(gv) ); |
ddda08b7 GS |
4934 | if (PL_main_start && ckWARN(WARN_VOID)) |
4935 | Perl_warner(aTHX_ WARN_VOID, "Too late to run INIT block"); | |
ea2f84a3 GS |
4936 | av_push(PL_initav, (SV*)cv); |
4937 | GvCV(gv) = 0; /* cv has been hijacked */ | |
ae77835f | 4938 | } |
79072805 | 4939 | } |
a6006777 | 4940 | |
aa689395 | 4941 | done: |
3280af22 | 4942 | PL_copline = NOLINE; |
8990e307 | 4943 | LEAVE_SCOPE(floor); |
a0d0e21e | 4944 | return cv; |
79072805 LW |
4945 | } |
4946 | ||
b099ddc0 | 4947 | /* XXX unsafe for threads if eval_owner isn't held */ |
954c1994 GS |
4948 | /* |
4949 | =for apidoc newCONSTSUB | |
4950 | ||
4951 | Creates a constant sub equivalent to Perl C<sub FOO () { 123 }> which is | |
4952 | eligible for inlining at compile-time. | |
4953 | ||
4954 | =cut | |
4955 | */ | |
4956 | ||
beab0874 | 4957 | CV * |
864dbfa3 | 4958 | Perl_newCONSTSUB(pTHX_ HV *stash, char *name, SV *sv) |
5476c433 | 4959 | { |
beab0874 | 4960 | CV* cv; |
5476c433 | 4961 | |
11faa288 | 4962 | ENTER; |
11faa288 | 4963 | |
f4dd75d9 | 4964 | SAVECOPLINE(PL_curcop); |
11faa288 | 4965 | CopLINE_set(PL_curcop, PL_copline); |
f4dd75d9 GS |
4966 | |
4967 | SAVEHINTS(); | |
3280af22 | 4968 | PL_hints &= ~HINT_BLOCK_SCOPE; |
11faa288 GS |
4969 | |
4970 | if (stash) { | |
4971 | SAVESPTR(PL_curstash); | |
4972 | SAVECOPSTASH(PL_curcop); | |
4973 | PL_curstash = stash; | |
4974 | #ifdef USE_ITHREADS | |
4975 | CopSTASHPV(PL_curcop) = stash ? HvNAME(stash) : Nullch; | |
4976 | #else | |
4977 | CopSTASH(PL_curcop) = stash; | |
4978 | #endif | |
4979 | } | |
5476c433 | 4980 | |
beab0874 JT |
4981 | cv = newXS(name, const_sv_xsub, __FILE__); |
4982 | CvXSUBANY(cv).any_ptr = sv; | |
4983 | CvCONST_on(cv); | |
4984 | sv_setpv((SV*)cv, ""); /* prototype is "" */ | |
5476c433 | 4985 | |
11faa288 | 4986 | LEAVE; |
beab0874 JT |
4987 | |
4988 | return cv; | |
5476c433 JD |
4989 | } |
4990 | ||
954c1994 GS |
4991 | /* |
4992 | =for apidoc U||newXS | |
4993 | ||
4994 | Used by C<xsubpp> to hook up XSUBs as Perl subs. | |
4995 | ||
4996 | =cut | |
4997 | */ | |
4998 | ||
57d3b86d | 4999 | CV * |
864dbfa3 | 5000 | Perl_newXS(pTHX_ char *name, XSUBADDR_t subaddr, char *filename) |
a0d0e21e | 5001 | { |
44a8e56a | 5002 | GV *gv = gv_fetchpv(name ? name : "__ANON__", GV_ADDMULTI, SVt_PVCV); |
79072805 | 5003 | register CV *cv; |
44a8e56a | 5004 | |
155aba94 | 5005 | if ((cv = (name ? GvCV(gv) : Nullcv))) { |
44a8e56a | 5006 | if (GvCVGEN(gv)) { |
5007 | /* just a cached method */ | |
5008 | SvREFCNT_dec(cv); | |
5009 | cv = 0; | |
5010 | } | |
5011 | else if (CvROOT(cv) || CvXSUB(cv) || GvASSUMECV(gv)) { | |
5012 | /* already defined (or promised) */ | |
599cee73 | 5013 | if (ckWARN(WARN_REDEFINE) && !(CvGV(cv) && GvSTASH(CvGV(cv)) |
2f34f9d4 IZ |
5014 | && HvNAME(GvSTASH(CvGV(cv))) |
5015 | && strEQ(HvNAME(GvSTASH(CvGV(cv))), "autouse"))) { | |
57843af0 | 5016 | line_t oldline = CopLINE(PL_curcop); |
51f6edd3 | 5017 | if (PL_copline != NOLINE) |
57843af0 | 5018 | CopLINE_set(PL_curcop, PL_copline); |
beab0874 JT |
5019 | Perl_warner(aTHX_ WARN_REDEFINE, |
5020 | CvCONST(cv) ? "Constant subroutine %s redefined" | |
5021 | : "Subroutine %s redefined" | |
5022 | ,name); | |
57843af0 | 5023 | CopLINE_set(PL_curcop, oldline); |
a0d0e21e LW |
5024 | } |
5025 | SvREFCNT_dec(cv); | |
5026 | cv = 0; | |
79072805 | 5027 | } |
79072805 | 5028 | } |
44a8e56a | 5029 | |
5030 | if (cv) /* must reuse cv if autoloaded */ | |
5031 | cv_undef(cv); | |
a0d0e21e LW |
5032 | else { |
5033 | cv = (CV*)NEWSV(1105,0); | |
5034 | sv_upgrade((SV *)cv, SVt_PVCV); | |
44a8e56a | 5035 | if (name) { |
5036 | GvCV(gv) = cv; | |
5037 | GvCVGEN(gv) = 0; | |
3280af22 | 5038 | PL_sub_generation++; |
44a8e56a | 5039 | } |
a0d0e21e | 5040 | } |
65c50114 | 5041 | CvGV(cv) = gv; |
11343788 | 5042 | #ifdef USE_THREADS |
12ca11f6 | 5043 | New(666, CvMUTEXP(cv), 1, perl_mutex); |
11343788 | 5044 | MUTEX_INIT(CvMUTEXP(cv)); |
11343788 MB |
5045 | CvOWNER(cv) = 0; |
5046 | #endif /* USE_THREADS */ | |
b195d487 | 5047 | (void)gv_fetchfile(filename); |
57843af0 GS |
5048 | CvFILE(cv) = filename; /* NOTE: not copied, as it is expected to be |
5049 | an external constant string */ | |
a0d0e21e | 5050 | CvXSUB(cv) = subaddr; |
44a8e56a | 5051 | |
28757baa | 5052 | if (name) { |
5053 | char *s = strrchr(name,':'); | |
5054 | if (s) | |
5055 | s++; | |
5056 | else | |
5057 | s = name; | |
ed094faf | 5058 | |
7d30b5c4 | 5059 | if (*s != 'B' && *s != 'E' && *s != 'C' && *s != 'I') |
ed094faf GS |
5060 | goto done; |
5061 | ||
28757baa | 5062 | if (strEQ(s, "BEGIN")) { |
3280af22 NIS |
5063 | if (!PL_beginav) |
5064 | PL_beginav = newAV(); | |
ea2f84a3 GS |
5065 | av_push(PL_beginav, (SV*)cv); |
5066 | GvCV(gv) = 0; /* cv has been hijacked */ | |
28757baa | 5067 | } |
5068 | else if (strEQ(s, "END")) { | |
3280af22 NIS |
5069 | if (!PL_endav) |
5070 | PL_endav = newAV(); | |
5071 | av_unshift(PL_endav, 1); | |
ea2f84a3 GS |
5072 | av_store(PL_endav, 0, (SV*)cv); |
5073 | GvCV(gv) = 0; /* cv has been hijacked */ | |
28757baa | 5074 | } |
7d30b5c4 GS |
5075 | else if (strEQ(s, "CHECK")) { |
5076 | if (!PL_checkav) | |
5077 | PL_checkav = newAV(); | |
ddda08b7 GS |
5078 | if (PL_main_start && ckWARN(WARN_VOID)) |
5079 | Perl_warner(aTHX_ WARN_VOID, "Too late to run CHECK block"); | |
7d30b5c4 | 5080 | av_unshift(PL_checkav, 1); |
ea2f84a3 GS |
5081 | av_store(PL_checkav, 0, (SV*)cv); |
5082 | GvCV(gv) = 0; /* cv has been hijacked */ | |
4f25aa18 | 5083 | } |
7d07dbc2 | 5084 | else if (strEQ(s, "INIT")) { |
3280af22 NIS |
5085 | if (!PL_initav) |
5086 | PL_initav = newAV(); | |
ddda08b7 GS |
5087 | if (PL_main_start && ckWARN(WARN_VOID)) |
5088 | Perl_warner(aTHX_ WARN_VOID, "Too late to run INIT block"); | |
ea2f84a3 GS |
5089 | av_push(PL_initav, (SV*)cv); |
5090 | GvCV(gv) = 0; /* cv has been hijacked */ | |
ae77835f | 5091 | } |
28757baa | 5092 | } |
8990e307 | 5093 | else |
a5f75d66 | 5094 | CvANON_on(cv); |
44a8e56a | 5095 | |
ed094faf | 5096 | done: |
a0d0e21e | 5097 | return cv; |
79072805 LW |
5098 | } |
5099 | ||
5100 | void | |
864dbfa3 | 5101 | Perl_newFORM(pTHX_ I32 floor, OP *o, OP *block) |
79072805 LW |
5102 | { |
5103 | register CV *cv; | |
5104 | char *name; | |
5105 | GV *gv; | |
a0d0e21e | 5106 | I32 ix; |
2d8e6c8d | 5107 | STRLEN n_a; |
79072805 | 5108 | |
11343788 | 5109 | if (o) |
2d8e6c8d | 5110 | name = SvPVx(cSVOPo->op_sv, n_a); |
79072805 LW |
5111 | else |
5112 | name = "STDOUT"; | |
85e6fe83 | 5113 | gv = gv_fetchpv(name,TRUE, SVt_PVFM); |
5bd07a3d DM |
5114 | #ifdef GV_SHARED_CHECK |
5115 | if (GvSHARED(gv)) { | |
5116 | Perl_croak(aTHX_ "Bad symbol for form (GV is shared)"); | |
5117 | } | |
5118 | #endif | |
a5f75d66 | 5119 | GvMULTI_on(gv); |
155aba94 | 5120 | if ((cv = GvFORM(gv))) { |
599cee73 | 5121 | if (ckWARN(WARN_REDEFINE)) { |
57843af0 | 5122 | line_t oldline = CopLINE(PL_curcop); |
79072805 | 5123 | |
57843af0 | 5124 | CopLINE_set(PL_curcop, PL_copline); |
cea2e8a9 | 5125 | Perl_warner(aTHX_ WARN_REDEFINE, "Format %s redefined",name); |
57843af0 | 5126 | CopLINE_set(PL_curcop, oldline); |
79072805 | 5127 | } |
8990e307 | 5128 | SvREFCNT_dec(cv); |
79072805 | 5129 | } |
3280af22 | 5130 | cv = PL_compcv; |
79072805 | 5131 | GvFORM(gv) = cv; |
65c50114 | 5132 | CvGV(cv) = gv; |
57843af0 | 5133 | CvFILE(cv) = CopFILE(PL_curcop); |
79072805 | 5134 | |
3280af22 NIS |
5135 | for (ix = AvFILLp(PL_comppad); ix > 0; ix--) { |
5136 | if (!SvPADMY(PL_curpad[ix]) && !SvIMMORTAL(PL_curpad[ix])) | |
5137 | SvPADTMP_on(PL_curpad[ix]); | |
a0d0e21e LW |
5138 | } |
5139 | ||
79072805 | 5140 | CvROOT(cv) = newUNOP(OP_LEAVEWRITE, 0, scalarseq(block)); |
7934575e GS |
5141 | CvROOT(cv)->op_private |= OPpREFCOUNTED; |
5142 | OpREFCNT_set(CvROOT(cv), 1); | |
79072805 LW |
5143 | CvSTART(cv) = LINKLIST(CvROOT(cv)); |
5144 | CvROOT(cv)->op_next = 0; | |
5145 | peep(CvSTART(cv)); | |
11343788 | 5146 | op_free(o); |
3280af22 | 5147 | PL_copline = NOLINE; |
8990e307 | 5148 | LEAVE_SCOPE(floor); |
79072805 LW |
5149 | } |
5150 | ||
5151 | OP * | |
864dbfa3 | 5152 | Perl_newANONLIST(pTHX_ OP *o) |
79072805 | 5153 | { |
93a17b20 | 5154 | return newUNOP(OP_REFGEN, 0, |
11343788 | 5155 | mod(list(convert(OP_ANONLIST, 0, o)), OP_REFGEN)); |
79072805 LW |
5156 | } |
5157 | ||
5158 | OP * | |
864dbfa3 | 5159 | Perl_newANONHASH(pTHX_ OP *o) |
79072805 | 5160 | { |
93a17b20 | 5161 | return newUNOP(OP_REFGEN, 0, |
11343788 | 5162 | mod(list(convert(OP_ANONHASH, 0, o)), OP_REFGEN)); |
a0d0e21e LW |
5163 | } |
5164 | ||
5165 | OP * | |
864dbfa3 | 5166 | Perl_newANONSUB(pTHX_ I32 floor, OP *proto, OP *block) |
a0d0e21e | 5167 | { |
09bef843 SB |
5168 | return newANONATTRSUB(floor, proto, Nullop, block); |
5169 | } | |
5170 | ||
5171 | OP * | |
5172 | Perl_newANONATTRSUB(pTHX_ I32 floor, OP *proto, OP *attrs, OP *block) | |
5173 | { | |
a0d0e21e | 5174 | return newUNOP(OP_REFGEN, 0, |
09bef843 SB |
5175 | newSVOP(OP_ANONCODE, 0, |
5176 | (SV*)newATTRSUB(floor, 0, proto, attrs, block))); | |
79072805 LW |
5177 | } |
5178 | ||
5179 | OP * | |
864dbfa3 | 5180 | Perl_oopsAV(pTHX_ OP *o) |
79072805 | 5181 | { |
ed6116ce LW |
5182 | switch (o->op_type) { |
5183 | case OP_PADSV: | |
5184 | o->op_type = OP_PADAV; | |
22c35a8c | 5185 | o->op_ppaddr = PL_ppaddr[OP_PADAV]; |
51e247a3 | 5186 | return ref(o, OP_RV2AV); |
ed6116ce LW |
5187 | |
5188 | case OP_RV2SV: | |
79072805 | 5189 | o->op_type = OP_RV2AV; |
22c35a8c | 5190 | o->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
79072805 | 5191 | ref(o, OP_RV2AV); |
ed6116ce LW |
5192 | break; |
5193 | ||
5194 | default: | |
0453d815 PM |
5195 | if (ckWARN_d(WARN_INTERNAL)) |
5196 | Perl_warner(aTHX_ WARN_INTERNAL, "oops: oopsAV"); | |
ed6116ce LW |
5197 | break; |
5198 | } | |
79072805 LW |
5199 | return o; |
5200 | } | |
5201 | ||
5202 | OP * | |
864dbfa3 | 5203 | Perl_oopsHV(pTHX_ OP *o) |
79072805 | 5204 | { |
ed6116ce LW |
5205 | switch (o->op_type) { |
5206 | case OP_PADSV: | |
5207 | case OP_PADAV: | |
5208 | o->op_type = OP_PADHV; | |
22c35a8c | 5209 | o->op_ppaddr = PL_ppaddr[OP_PADHV]; |
51e247a3 | 5210 | return ref(o, OP_RV2HV); |
ed6116ce LW |
5211 | |
5212 | case OP_RV2SV: | |
5213 | case OP_RV2AV: | |
79072805 | 5214 | o->op_type = OP_RV2HV; |
22c35a8c | 5215 | o->op_ppaddr = PL_ppaddr[OP_RV2HV]; |
79072805 | 5216 | ref(o, OP_RV2HV); |
ed6116ce LW |
5217 | break; |
5218 | ||
5219 | default: | |
0453d815 PM |
5220 | if (ckWARN_d(WARN_INTERNAL)) |
5221 | Perl_warner(aTHX_ WARN_INTERNAL, "oops: oopsHV"); | |
ed6116ce LW |
5222 | break; |
5223 | } | |
79072805 LW |
5224 | return o; |
5225 | } | |
5226 | ||
5227 | OP * | |
864dbfa3 | 5228 | Perl_newAVREF(pTHX_ OP *o) |
79072805 | 5229 | { |
ed6116ce LW |
5230 | if (o->op_type == OP_PADANY) { |
5231 | o->op_type = OP_PADAV; | |
22c35a8c | 5232 | o->op_ppaddr = PL_ppaddr[OP_PADAV]; |
93a17b20 | 5233 | return o; |
ed6116ce | 5234 | } |
79072805 LW |
5235 | return newUNOP(OP_RV2AV, 0, scalar(o)); |
5236 | } | |
5237 | ||
5238 | OP * | |
864dbfa3 | 5239 | Perl_newGVREF(pTHX_ I32 type, OP *o) |
79072805 | 5240 | { |
82092f1d | 5241 | if (type == OP_MAPSTART || type == OP_GREPSTART || type == OP_SORT) |
a0d0e21e | 5242 | return newUNOP(OP_NULL, 0, o); |
748a9306 | 5243 | return ref(newUNOP(OP_RV2GV, OPf_REF, o), type); |
79072805 LW |
5244 | } |
5245 | ||
5246 | OP * | |
864dbfa3 | 5247 | Perl_newHVREF(pTHX_ OP *o) |
79072805 | 5248 | { |
ed6116ce LW |
5249 | if (o->op_type == OP_PADANY) { |
5250 | o->op_type = OP_PADHV; | |
22c35a8c | 5251 | o->op_ppaddr = PL_ppaddr[OP_PADHV]; |
93a17b20 | 5252 | return o; |
ed6116ce | 5253 | } |
79072805 LW |
5254 | return newUNOP(OP_RV2HV, 0, scalar(o)); |
5255 | } | |
5256 | ||
5257 | OP * | |
864dbfa3 | 5258 | Perl_oopsCV(pTHX_ OP *o) |
79072805 | 5259 | { |
cea2e8a9 | 5260 | Perl_croak(aTHX_ "NOT IMPL LINE %d",__LINE__); |
79072805 LW |
5261 | /* STUB */ |
5262 | return o; | |
5263 | } | |
5264 | ||
5265 | OP * | |
864dbfa3 | 5266 | Perl_newCVREF(pTHX_ I32 flags, OP *o) |
79072805 | 5267 | { |
c07a80fd | 5268 | return newUNOP(OP_RV2CV, flags, scalar(o)); |
79072805 LW |
5269 | } |
5270 | ||
5271 | OP * | |
864dbfa3 | 5272 | Perl_newSVREF(pTHX_ OP *o) |
79072805 | 5273 | { |
ed6116ce LW |
5274 | if (o->op_type == OP_PADANY) { |
5275 | o->op_type = OP_PADSV; | |
22c35a8c | 5276 | o->op_ppaddr = PL_ppaddr[OP_PADSV]; |
93a17b20 | 5277 | return o; |
ed6116ce | 5278 | } |
224a4551 MB |
5279 | else if (o->op_type == OP_THREADSV && !(o->op_flags & OPpDONE_SVREF)) { |
5280 | o->op_flags |= OPpDONE_SVREF; | |
a863c7d1 | 5281 | return o; |
224a4551 | 5282 | } |
79072805 LW |
5283 | return newUNOP(OP_RV2SV, 0, scalar(o)); |
5284 | } | |
5285 | ||
5286 | /* Check routines. */ | |
5287 | ||
5288 | OP * | |
cea2e8a9 | 5289 | Perl_ck_anoncode(pTHX_ OP *o) |
5f05dabc | 5290 | { |
178c6305 CS |
5291 | PADOFFSET ix; |
5292 | SV* name; | |
5293 | ||
5294 | name = NEWSV(1106,0); | |
5295 | sv_upgrade(name, SVt_PVNV); | |
5296 | sv_setpvn(name, "&", 1); | |
5297 | SvIVX(name) = -1; | |
5298 | SvNVX(name) = 1; | |
5dc0d613 | 5299 | ix = pad_alloc(o->op_type, SVs_PADMY); |
3280af22 NIS |
5300 | av_store(PL_comppad_name, ix, name); |
5301 | av_store(PL_comppad, ix, cSVOPo->op_sv); | |
5dc0d613 MB |
5302 | SvPADMY_on(cSVOPo->op_sv); |
5303 | cSVOPo->op_sv = Nullsv; | |
5304 | cSVOPo->op_targ = ix; | |
5305 | return o; | |
5f05dabc | 5306 | } |
5307 | ||
5308 | OP * | |
cea2e8a9 | 5309 | Perl_ck_bitop(pTHX_ OP *o) |
55497cff | 5310 | { |
3280af22 | 5311 | o->op_private = PL_hints; |
5dc0d613 | 5312 | return o; |
55497cff | 5313 | } |
5314 | ||
5315 | OP * | |
cea2e8a9 | 5316 | Perl_ck_concat(pTHX_ OP *o) |
79072805 | 5317 | { |
11343788 MB |
5318 | if (cUNOPo->op_first->op_type == OP_CONCAT) |
5319 | o->op_flags |= OPf_STACKED; | |
5320 | return o; | |
79072805 LW |
5321 | } |
5322 | ||
5323 | OP * | |
cea2e8a9 | 5324 | Perl_ck_spair(pTHX_ OP *o) |
79072805 | 5325 | { |
11343788 | 5326 | if (o->op_flags & OPf_KIDS) { |
79072805 | 5327 | OP* newop; |
a0d0e21e | 5328 | OP* kid; |
5dc0d613 MB |
5329 | OPCODE type = o->op_type; |
5330 | o = modkids(ck_fun(o), type); | |
11343788 | 5331 | kid = cUNOPo->op_first; |
a0d0e21e LW |
5332 | newop = kUNOP->op_first->op_sibling; |
5333 | if (newop && | |
5334 | (newop->op_sibling || | |
22c35a8c | 5335 | !(PL_opargs[newop->op_type] & OA_RETSCALAR) || |
a0d0e21e LW |
5336 | newop->op_type == OP_PADAV || newop->op_type == OP_PADHV || |
5337 | newop->op_type == OP_RV2AV || newop->op_type == OP_RV2HV)) { | |
aeea060c | 5338 | |
11343788 | 5339 | return o; |
a0d0e21e LW |
5340 | } |
5341 | op_free(kUNOP->op_first); | |
5342 | kUNOP->op_first = newop; | |
5343 | } | |
22c35a8c | 5344 | o->op_ppaddr = PL_ppaddr[++o->op_type]; |
11343788 | 5345 | return ck_fun(o); |
a0d0e21e LW |
5346 | } |
5347 | ||
5348 | OP * | |
cea2e8a9 | 5349 | Perl_ck_delete(pTHX_ OP *o) |
a0d0e21e | 5350 | { |
11343788 | 5351 | o = ck_fun(o); |
5dc0d613 | 5352 | o->op_private = 0; |
11343788 MB |
5353 | if (o->op_flags & OPf_KIDS) { |
5354 | OP *kid = cUNOPo->op_first; | |
01020589 GS |
5355 | switch (kid->op_type) { |
5356 | case OP_ASLICE: | |
5357 | o->op_flags |= OPf_SPECIAL; | |
5358 | /* FALL THROUGH */ | |
5359 | case OP_HSLICE: | |
5dc0d613 | 5360 | o->op_private |= OPpSLICE; |
01020589 GS |
5361 | break; |
5362 | case OP_AELEM: | |
5363 | o->op_flags |= OPf_SPECIAL; | |
5364 | /* FALL THROUGH */ | |
5365 | case OP_HELEM: | |
5366 | break; | |
5367 | default: | |
5368 | Perl_croak(aTHX_ "%s argument is not a HASH or ARRAY element or slice", | |
22c35a8c | 5369 | PL_op_desc[o->op_type]); |
01020589 | 5370 | } |
a0d0e21e | 5371 | null(kid); |
79072805 | 5372 | } |
11343788 | 5373 | return o; |
79072805 LW |
5374 | } |
5375 | ||
5376 | OP * | |
cea2e8a9 | 5377 | Perl_ck_eof(pTHX_ OP *o) |
79072805 | 5378 | { |
11343788 | 5379 | I32 type = o->op_type; |
79072805 | 5380 | |
11343788 MB |
5381 | if (o->op_flags & OPf_KIDS) { |
5382 | if (cLISTOPo->op_first->op_type == OP_STUB) { | |
5383 | op_free(o); | |
5384 | o = newUNOP(type, OPf_SPECIAL, | |
d58bf5aa | 5385 | newGVOP(OP_GV, 0, gv_fetchpv("main::ARGV", TRUE, SVt_PVAV))); |
8990e307 | 5386 | } |
11343788 | 5387 | return ck_fun(o); |
79072805 | 5388 | } |
11343788 | 5389 | return o; |
79072805 LW |
5390 | } |
5391 | ||
5392 | OP * | |
cea2e8a9 | 5393 | Perl_ck_eval(pTHX_ OP *o) |
79072805 | 5394 | { |
3280af22 | 5395 | PL_hints |= HINT_BLOCK_SCOPE; |
11343788 MB |
5396 | if (o->op_flags & OPf_KIDS) { |
5397 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 | 5398 | |
93a17b20 | 5399 | if (!kid) { |
11343788 MB |
5400 | o->op_flags &= ~OPf_KIDS; |
5401 | null(o); | |
79072805 LW |
5402 | } |
5403 | else if (kid->op_type == OP_LINESEQ) { | |
5404 | LOGOP *enter; | |
5405 | ||
11343788 MB |
5406 | kid->op_next = o->op_next; |
5407 | cUNOPo->op_first = 0; | |
5408 | op_free(o); | |
79072805 | 5409 | |
b7dc083c | 5410 | NewOp(1101, enter, 1, LOGOP); |
79072805 | 5411 | enter->op_type = OP_ENTERTRY; |
22c35a8c | 5412 | enter->op_ppaddr = PL_ppaddr[OP_ENTERTRY]; |
79072805 LW |
5413 | enter->op_private = 0; |
5414 | ||
5415 | /* establish postfix order */ | |
5416 | enter->op_next = (OP*)enter; | |
5417 | ||
11343788 MB |
5418 | o = prepend_elem(OP_LINESEQ, (OP*)enter, (OP*)kid); |
5419 | o->op_type = OP_LEAVETRY; | |
22c35a8c | 5420 | o->op_ppaddr = PL_ppaddr[OP_LEAVETRY]; |
11343788 MB |
5421 | enter->op_other = o; |
5422 | return o; | |
79072805 | 5423 | } |
c7cc6f1c | 5424 | else |
473986ff | 5425 | scalar((OP*)kid); |
79072805 LW |
5426 | } |
5427 | else { | |
11343788 | 5428 | op_free(o); |
54b9620d | 5429 | o = newUNOP(OP_ENTEREVAL, 0, newDEFSVOP()); |
79072805 | 5430 | } |
3280af22 | 5431 | o->op_targ = (PADOFFSET)PL_hints; |
11343788 | 5432 | return o; |
79072805 LW |
5433 | } |
5434 | ||
5435 | OP * | |
d98f61e7 GS |
5436 | Perl_ck_exit(pTHX_ OP *o) |
5437 | { | |
5438 | #ifdef VMS | |
5439 | HV *table = GvHV(PL_hintgv); | |
5440 | if (table) { | |
5441 | SV **svp = hv_fetch(table, "vmsish_exit", 11, FALSE); | |
5442 | if (svp && *svp && SvTRUE(*svp)) | |
5443 | o->op_private |= OPpEXIT_VMSISH; | |
5444 | } | |
5445 | #endif | |
5446 | return ck_fun(o); | |
5447 | } | |
5448 | ||
5449 | OP * | |
cea2e8a9 | 5450 | Perl_ck_exec(pTHX_ OP *o) |
79072805 LW |
5451 | { |
5452 | OP *kid; | |
11343788 MB |
5453 | if (o->op_flags & OPf_STACKED) { |
5454 | o = ck_fun(o); | |
5455 | kid = cUNOPo->op_first->op_sibling; | |
8990e307 LW |
5456 | if (kid->op_type == OP_RV2GV) |
5457 | null(kid); | |
79072805 | 5458 | } |
463ee0b2 | 5459 | else |
11343788 MB |
5460 | o = listkids(o); |
5461 | return o; | |
79072805 LW |
5462 | } |
5463 | ||
5464 | OP * | |
cea2e8a9 | 5465 | Perl_ck_exists(pTHX_ OP *o) |
5f05dabc | 5466 | { |
5196be3e MB |
5467 | o = ck_fun(o); |
5468 | if (o->op_flags & OPf_KIDS) { | |
5469 | OP *kid = cUNOPo->op_first; | |
afebc493 GS |
5470 | if (kid->op_type == OP_ENTERSUB) { |
5471 | (void) ref(kid, o->op_type); | |
5472 | if (kid->op_type != OP_RV2CV && !PL_error_count) | |
5473 | Perl_croak(aTHX_ "%s argument is not a subroutine name", | |
5474 | PL_op_desc[o->op_type]); | |
5475 | o->op_private |= OPpEXISTS_SUB; | |
5476 | } | |
5477 | else if (kid->op_type == OP_AELEM) | |
01020589 GS |
5478 | o->op_flags |= OPf_SPECIAL; |
5479 | else if (kid->op_type != OP_HELEM) | |
5480 | Perl_croak(aTHX_ "%s argument is not a HASH or ARRAY element", | |
5481 | PL_op_desc[o->op_type]); | |
5f05dabc | 5482 | null(kid); |
5483 | } | |
5196be3e | 5484 | return o; |
5f05dabc | 5485 | } |
5486 | ||
22c35a8c | 5487 | #if 0 |
5f05dabc | 5488 | OP * |
cea2e8a9 | 5489 | Perl_ck_gvconst(pTHX_ register OP *o) |
79072805 LW |
5490 | { |
5491 | o = fold_constants(o); | |
5492 | if (o->op_type == OP_CONST) | |
5493 | o->op_type = OP_GV; | |
5494 | return o; | |
5495 | } | |
22c35a8c | 5496 | #endif |
79072805 LW |
5497 | |
5498 | OP * | |
cea2e8a9 | 5499 | Perl_ck_rvconst(pTHX_ register OP *o) |
79072805 | 5500 | { |
11343788 | 5501 | SVOP *kid = (SVOP*)cUNOPo->op_first; |
85e6fe83 | 5502 | |
3280af22 | 5503 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
79072805 | 5504 | if (kid->op_type == OP_CONST) { |
44a8e56a | 5505 | char *name; |
5506 | int iscv; | |
5507 | GV *gv; | |
779c5bc9 | 5508 | SV *kidsv = kid->op_sv; |
2d8e6c8d | 5509 | STRLEN n_a; |
44a8e56a | 5510 | |
779c5bc9 GS |
5511 | /* Is it a constant from cv_const_sv()? */ |
5512 | if (SvROK(kidsv) && SvREADONLY(kidsv)) { | |
5513 | SV *rsv = SvRV(kidsv); | |
5514 | int svtype = SvTYPE(rsv); | |
5515 | char *badtype = Nullch; | |
5516 | ||
5517 | switch (o->op_type) { | |
5518 | case OP_RV2SV: | |
5519 | if (svtype > SVt_PVMG) | |
5520 | badtype = "a SCALAR"; | |
5521 | break; | |
5522 | case OP_RV2AV: | |
5523 | if (svtype != SVt_PVAV) | |
5524 | badtype = "an ARRAY"; | |
5525 | break; | |
5526 | case OP_RV2HV: | |
5527 | if (svtype != SVt_PVHV) { | |
5528 | if (svtype == SVt_PVAV) { /* pseudohash? */ | |
5529 | SV **ksv = av_fetch((AV*)rsv, 0, FALSE); | |
5530 | if (ksv && SvROK(*ksv) | |
5531 | && SvTYPE(SvRV(*ksv)) == SVt_PVHV) | |
5532 | { | |
5533 | break; | |
5534 | } | |
5535 | } | |
5536 | badtype = "a HASH"; | |
5537 | } | |
5538 | break; | |
5539 | case OP_RV2CV: | |
5540 | if (svtype != SVt_PVCV) | |
5541 | badtype = "a CODE"; | |
5542 | break; | |
5543 | } | |
5544 | if (badtype) | |
cea2e8a9 | 5545 | Perl_croak(aTHX_ "Constant is not %s reference", badtype); |
779c5bc9 GS |
5546 | return o; |
5547 | } | |
2d8e6c8d | 5548 | name = SvPV(kidsv, n_a); |
3280af22 | 5549 | if ((PL_hints & HINT_STRICT_REFS) && (kid->op_private & OPpCONST_BARE)) { |
44a8e56a | 5550 | char *badthing = Nullch; |
5dc0d613 | 5551 | switch (o->op_type) { |
44a8e56a | 5552 | case OP_RV2SV: |
5553 | badthing = "a SCALAR"; | |
5554 | break; | |
5555 | case OP_RV2AV: | |
5556 | badthing = "an ARRAY"; | |
5557 | break; | |
5558 | case OP_RV2HV: | |
5559 | badthing = "a HASH"; | |
5560 | break; | |
5561 | } | |
5562 | if (badthing) | |
1c846c1f | 5563 | Perl_croak(aTHX_ |
44a8e56a | 5564 | "Can't use bareword (\"%s\") as %s ref while \"strict refs\" in use", |
5565 | name, badthing); | |
5566 | } | |
93233ece CS |
5567 | /* |
5568 | * This is a little tricky. We only want to add the symbol if we | |
5569 | * didn't add it in the lexer. Otherwise we get duplicate strict | |
5570 | * warnings. But if we didn't add it in the lexer, we must at | |
5571 | * least pretend like we wanted to add it even if it existed before, | |
5572 | * or we get possible typo warnings. OPpCONST_ENTERED says | |
5573 | * whether the lexer already added THIS instance of this symbol. | |
5574 | */ | |
5196be3e | 5575 | iscv = (o->op_type == OP_RV2CV) * 2; |
93233ece | 5576 | do { |
44a8e56a | 5577 | gv = gv_fetchpv(name, |
748a9306 | 5578 | iscv | !(kid->op_private & OPpCONST_ENTERED), |
a0d0e21e LW |
5579 | iscv |
5580 | ? SVt_PVCV | |
11343788 | 5581 | : o->op_type == OP_RV2SV |
a0d0e21e | 5582 | ? SVt_PV |
11343788 | 5583 | : o->op_type == OP_RV2AV |
a0d0e21e | 5584 | ? SVt_PVAV |
11343788 | 5585 | : o->op_type == OP_RV2HV |
a0d0e21e LW |
5586 | ? SVt_PVHV |
5587 | : SVt_PVGV); | |
93233ece CS |
5588 | } while (!gv && !(kid->op_private & OPpCONST_ENTERED) && !iscv++); |
5589 | if (gv) { | |
5590 | kid->op_type = OP_GV; | |
5591 | SvREFCNT_dec(kid->op_sv); | |
350de78d | 5592 | #ifdef USE_ITHREADS |
638eceb6 | 5593 | /* XXX hack: dependence on sizeof(PADOP) <= sizeof(SVOP) */ |
350de78d | 5594 | kPADOP->op_padix = pad_alloc(OP_GV, SVs_PADTMP); |
63caf608 | 5595 | SvREFCNT_dec(PL_curpad[kPADOP->op_padix]); |
743e66e6 | 5596 | GvIN_PAD_on(gv); |
350de78d GS |
5597 | PL_curpad[kPADOP->op_padix] = SvREFCNT_inc(gv); |
5598 | #else | |
93233ece | 5599 | kid->op_sv = SvREFCNT_inc(gv); |
350de78d | 5600 | #endif |
23f1ca44 | 5601 | kid->op_private = 0; |
76cd736e | 5602 | kid->op_ppaddr = PL_ppaddr[OP_GV]; |
a0d0e21e | 5603 | } |
79072805 | 5604 | } |
11343788 | 5605 | return o; |
79072805 LW |
5606 | } |
5607 | ||
5608 | OP * | |
cea2e8a9 | 5609 | Perl_ck_ftst(pTHX_ OP *o) |
79072805 | 5610 | { |
11343788 | 5611 | I32 type = o->op_type; |
79072805 | 5612 | |
d0dca557 JD |
5613 | if (o->op_flags & OPf_REF) { |
5614 | /* nothing */ | |
5615 | } | |
5616 | else if (o->op_flags & OPf_KIDS && cUNOPo->op_first->op_type != OP_STUB) { | |
11343788 | 5617 | SVOP *kid = (SVOP*)cUNOPo->op_first; |
79072805 LW |
5618 | |
5619 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
2d8e6c8d | 5620 | STRLEN n_a; |
a0d0e21e | 5621 | OP *newop = newGVOP(type, OPf_REF, |
2d8e6c8d | 5622 | gv_fetchpv(SvPVx(kid->op_sv, n_a), TRUE, SVt_PVIO)); |
11343788 | 5623 | op_free(o); |
d0dca557 | 5624 | o = newop; |
79072805 LW |
5625 | } |
5626 | } | |
5627 | else { | |
11343788 | 5628 | op_free(o); |
79072805 | 5629 | if (type == OP_FTTTY) |
d0dca557 | 5630 | o = newGVOP(type, OPf_REF, gv_fetchpv("main::STDIN", TRUE, |
85e6fe83 | 5631 | SVt_PVIO)); |
79072805 | 5632 | else |
d0dca557 | 5633 | o = newUNOP(type, 0, newDEFSVOP()); |
79072805 | 5634 | } |
d0dca557 JD |
5635 | #ifdef USE_LOCALE |
5636 | if (type == OP_FTTEXT || type == OP_FTBINARY) { | |
5637 | o->op_private = 0; | |
5638 | if (PL_hints & HINT_LOCALE) | |
5639 | o->op_private |= OPpLOCALE; | |
5640 | } | |
5641 | #endif | |
11343788 | 5642 | return o; |
79072805 LW |
5643 | } |
5644 | ||
5645 | OP * | |
cea2e8a9 | 5646 | Perl_ck_fun(pTHX_ OP *o) |
79072805 LW |
5647 | { |
5648 | register OP *kid; | |
5649 | OP **tokid; | |
5650 | OP *sibl; | |
5651 | I32 numargs = 0; | |
11343788 | 5652 | int type = o->op_type; |
22c35a8c | 5653 | register I32 oa = PL_opargs[type] >> OASHIFT; |
aeea060c | 5654 | |
11343788 | 5655 | if (o->op_flags & OPf_STACKED) { |
79072805 LW |
5656 | if ((oa & OA_OPTIONAL) && (oa >> 4) && !((oa >> 4) & OA_OPTIONAL)) |
5657 | oa &= ~OA_OPTIONAL; | |
5658 | else | |
11343788 | 5659 | return no_fh_allowed(o); |
79072805 LW |
5660 | } |
5661 | ||
11343788 | 5662 | if (o->op_flags & OPf_KIDS) { |
2d8e6c8d | 5663 | STRLEN n_a; |
11343788 MB |
5664 | tokid = &cLISTOPo->op_first; |
5665 | kid = cLISTOPo->op_first; | |
8990e307 | 5666 | if (kid->op_type == OP_PUSHMARK || |
155aba94 | 5667 | (kid->op_type == OP_NULL && kid->op_targ == OP_PUSHMARK)) |
8990e307 | 5668 | { |
79072805 LW |
5669 | tokid = &kid->op_sibling; |
5670 | kid = kid->op_sibling; | |
5671 | } | |
22c35a8c | 5672 | if (!kid && PL_opargs[type] & OA_DEFGV) |
54b9620d | 5673 | *tokid = kid = newDEFSVOP(); |
79072805 LW |
5674 | |
5675 | while (oa && kid) { | |
5676 | numargs++; | |
5677 | sibl = kid->op_sibling; | |
5678 | switch (oa & 7) { | |
5679 | case OA_SCALAR: | |
62c18ce2 GS |
5680 | /* list seen where single (scalar) arg expected? */ |
5681 | if (numargs == 1 && !(oa >> 4) | |
5682 | && kid->op_type == OP_LIST && type != OP_SCALAR) | |
5683 | { | |
5684 | return too_many_arguments(o,PL_op_desc[type]); | |
5685 | } | |
79072805 LW |
5686 | scalar(kid); |
5687 | break; | |
5688 | case OA_LIST: | |
5689 | if (oa < 16) { | |
5690 | kid = 0; | |
5691 | continue; | |
5692 | } | |
5693 | else | |
5694 | list(kid); | |
5695 | break; | |
5696 | case OA_AVREF: | |
936edb8b | 5697 | if ((type == OP_PUSH || type == OP_UNSHIFT) |
f87c3213 JH |
5698 | && !kid->op_sibling && ckWARN(WARN_SYNTAX)) |
5699 | Perl_warner(aTHX_ WARN_SYNTAX, | |
de4864e4 | 5700 | "Useless use of %s with no values", |
936edb8b RH |
5701 | PL_op_desc[type]); |
5702 | ||
79072805 | 5703 | if (kid->op_type == OP_CONST && |
62c18ce2 GS |
5704 | (kid->op_private & OPpCONST_BARE)) |
5705 | { | |
2d8e6c8d | 5706 | char *name = SvPVx(((SVOP*)kid)->op_sv, n_a); |
79072805 | 5707 | OP *newop = newAVREF(newGVOP(OP_GV, 0, |
85e6fe83 | 5708 | gv_fetchpv(name, TRUE, SVt_PVAV) )); |
e476b1b5 GS |
5709 | if (ckWARN(WARN_DEPRECATED)) |
5710 | Perl_warner(aTHX_ WARN_DEPRECATED, | |
57def98f | 5711 | "Array @%s missing the @ in argument %"IVdf" of %s()", |
cf2093f6 | 5712 | name, (IV)numargs, PL_op_desc[type]); |
79072805 LW |
5713 | op_free(kid); |
5714 | kid = newop; | |
5715 | kid->op_sibling = sibl; | |
5716 | *tokid = kid; | |
5717 | } | |
8990e307 | 5718 | else if (kid->op_type != OP_RV2AV && kid->op_type != OP_PADAV) |
35cd451c | 5719 | bad_type(numargs, "array", PL_op_desc[type], kid); |
a0d0e21e | 5720 | mod(kid, type); |
79072805 LW |
5721 | break; |
5722 | case OA_HVREF: | |
5723 | if (kid->op_type == OP_CONST && | |
62c18ce2 GS |
5724 | (kid->op_private & OPpCONST_BARE)) |
5725 | { | |
2d8e6c8d | 5726 | char *name = SvPVx(((SVOP*)kid)->op_sv, n_a); |
79072805 | 5727 | OP *newop = newHVREF(newGVOP(OP_GV, 0, |
85e6fe83 | 5728 | gv_fetchpv(name, TRUE, SVt_PVHV) )); |
e476b1b5 GS |
5729 | if (ckWARN(WARN_DEPRECATED)) |
5730 | Perl_warner(aTHX_ WARN_DEPRECATED, | |
57def98f | 5731 | "Hash %%%s missing the %% in argument %"IVdf" of %s()", |
cf2093f6 | 5732 | name, (IV)numargs, PL_op_desc[type]); |
79072805 LW |
5733 | op_free(kid); |
5734 | kid = newop; | |
5735 | kid->op_sibling = sibl; | |
5736 | *tokid = kid; | |
5737 | } | |
8990e307 | 5738 | else if (kid->op_type != OP_RV2HV && kid->op_type != OP_PADHV) |
35cd451c | 5739 | bad_type(numargs, "hash", PL_op_desc[type], kid); |
a0d0e21e | 5740 | mod(kid, type); |
79072805 LW |
5741 | break; |
5742 | case OA_CVREF: | |
5743 | { | |
a0d0e21e | 5744 | OP *newop = newUNOP(OP_NULL, 0, kid); |
79072805 LW |
5745 | kid->op_sibling = 0; |
5746 | linklist(kid); | |
5747 | newop->op_next = newop; | |
5748 | kid = newop; | |
5749 | kid->op_sibling = sibl; | |
5750 | *tokid = kid; | |
5751 | } | |
5752 | break; | |
5753 | case OA_FILEREF: | |
c340be78 | 5754 | if (kid->op_type != OP_GV && kid->op_type != OP_RV2GV) { |
79072805 | 5755 | if (kid->op_type == OP_CONST && |
62c18ce2 GS |
5756 | (kid->op_private & OPpCONST_BARE)) |
5757 | { | |
79072805 | 5758 | OP *newop = newGVOP(OP_GV, 0, |
2d8e6c8d | 5759 | gv_fetchpv(SvPVx(((SVOP*)kid)->op_sv, n_a), TRUE, |
85e6fe83 | 5760 | SVt_PVIO) ); |
79072805 LW |
5761 | op_free(kid); |
5762 | kid = newop; | |
5763 | } | |
1ea32a52 GS |
5764 | else if (kid->op_type == OP_READLINE) { |
5765 | /* neophyte patrol: open(<FH>), close(<FH>) etc. */ | |
5766 | bad_type(numargs, "HANDLE", PL_op_desc[o->op_type], kid); | |
5767 | } | |
79072805 | 5768 | else { |
35cd451c | 5769 | I32 flags = OPf_SPECIAL; |
a6c40364 | 5770 | I32 priv = 0; |
2c8ac474 GS |
5771 | PADOFFSET targ = 0; |
5772 | ||
35cd451c | 5773 | /* is this op a FH constructor? */ |
853846ea | 5774 | if (is_handle_constructor(o,numargs)) { |
2c8ac474 GS |
5775 | char *name = Nullch; |
5776 | STRLEN len; | |
5777 | ||
5778 | flags = 0; | |
5779 | /* Set a flag to tell rv2gv to vivify | |
853846ea NIS |
5780 | * need to "prove" flag does not mean something |
5781 | * else already - NI-S 1999/05/07 | |
2c8ac474 GS |
5782 | */ |
5783 | priv = OPpDEREF; | |
5784 | if (kid->op_type == OP_PADSV) { | |
5785 | SV **namep = av_fetch(PL_comppad_name, | |
5786 | kid->op_targ, 4); | |
5787 | if (namep && *namep) | |
5788 | name = SvPV(*namep, len); | |
5789 | } | |
5790 | else if (kid->op_type == OP_RV2SV | |
5791 | && kUNOP->op_first->op_type == OP_GV) | |
5792 | { | |
5793 | GV *gv = cGVOPx_gv(kUNOP->op_first); | |
5794 | name = GvNAME(gv); | |
5795 | len = GvNAMELEN(gv); | |
5796 | } | |
afd1915d GS |
5797 | else if (kid->op_type == OP_AELEM |
5798 | || kid->op_type == OP_HELEM) | |
5799 | { | |
5800 | name = "__ANONIO__"; | |
5801 | len = 10; | |
5802 | mod(kid,type); | |
5803 | } | |
2c8ac474 GS |
5804 | if (name) { |
5805 | SV *namesv; | |
5806 | targ = pad_alloc(OP_RV2GV, SVs_PADTMP); | |
5807 | namesv = PL_curpad[targ]; | |
155aba94 | 5808 | (void)SvUPGRADE(namesv, SVt_PV); |
2c8ac474 GS |
5809 | if (*name != '$') |
5810 | sv_setpvn(namesv, "$", 1); | |
5811 | sv_catpvn(namesv, name, len); | |
5812 | } | |
853846ea | 5813 | } |
79072805 | 5814 | kid->op_sibling = 0; |
35cd451c | 5815 | kid = newUNOP(OP_RV2GV, flags, scalar(kid)); |
2c8ac474 GS |
5816 | kid->op_targ = targ; |
5817 | kid->op_private |= priv; | |
79072805 LW |
5818 | } |
5819 | kid->op_sibling = sibl; | |
5820 | *tokid = kid; | |
5821 | } | |
5822 | scalar(kid); | |
5823 | break; | |
5824 | case OA_SCALARREF: | |
a0d0e21e | 5825 | mod(scalar(kid), type); |
79072805 LW |
5826 | break; |
5827 | } | |
5828 | oa >>= 4; | |
5829 | tokid = &kid->op_sibling; | |
5830 | kid = kid->op_sibling; | |
5831 | } | |
11343788 | 5832 | o->op_private |= numargs; |
79072805 | 5833 | if (kid) |
22c35a8c | 5834 | return too_many_arguments(o,PL_op_desc[o->op_type]); |
11343788 | 5835 | listkids(o); |
79072805 | 5836 | } |
22c35a8c | 5837 | else if (PL_opargs[type] & OA_DEFGV) { |
11343788 | 5838 | op_free(o); |
54b9620d | 5839 | return newUNOP(type, 0, newDEFSVOP()); |
a0d0e21e LW |
5840 | } |
5841 | ||
79072805 LW |
5842 | if (oa) { |
5843 | while (oa & OA_OPTIONAL) | |
5844 | oa >>= 4; | |
5845 | if (oa && oa != OA_LIST) | |
22c35a8c | 5846 | return too_few_arguments(o,PL_op_desc[o->op_type]); |
79072805 | 5847 | } |
11343788 | 5848 | return o; |
79072805 LW |
5849 | } |
5850 | ||
5851 | OP * | |
cea2e8a9 | 5852 | Perl_ck_glob(pTHX_ OP *o) |
79072805 | 5853 | { |
fb73857a | 5854 | GV *gv; |
5855 | ||
649da076 | 5856 | o = ck_fun(o); |
1f2bfc8a | 5857 | if ((o->op_flags & OPf_KIDS) && !cLISTOPo->op_first->op_sibling) |
54b9620d | 5858 | append_elem(OP_GLOB, o, newDEFSVOP()); |
fb73857a | 5859 | |
5860 | if (!((gv = gv_fetchpv("glob", FALSE, SVt_PVCV)) && GvIMPORTED_CV(gv))) | |
5861 | gv = gv_fetchpv("CORE::GLOBAL::glob", FALSE, SVt_PVCV); | |
b1cb66bf | 5862 | |
52bb0670 | 5863 | #if !defined(PERL_EXTERNAL_GLOB) |
72b16652 GS |
5864 | /* XXX this can be tightened up and made more failsafe. */ |
5865 | if (!gv) { | |
7d3fb230 | 5866 | GV *glob_gv; |
72b16652 | 5867 | ENTER; |
7d3fb230 BS |
5868 | Perl_load_module(aTHX_ PERL_LOADMOD_NOIMPORT, newSVpvn("File::Glob", 10), Nullsv, |
5869 | Nullsv, Nullsv); | |
72b16652 | 5870 | gv = gv_fetchpv("CORE::GLOBAL::glob", FALSE, SVt_PVCV); |
7d3fb230 BS |
5871 | glob_gv = gv_fetchpv("File::Glob::csh_glob", FALSE, SVt_PVCV); |
5872 | GvCV(gv) = GvCV(glob_gv); | |
5873 | GvIMPORTED_CV_on(gv); | |
72b16652 GS |
5874 | LEAVE; |
5875 | } | |
52bb0670 | 5876 | #endif /* PERL_EXTERNAL_GLOB */ |
72b16652 | 5877 | |
b1cb66bf | 5878 | if (gv && GvIMPORTED_CV(gv)) { |
5196be3e | 5879 | append_elem(OP_GLOB, o, |
80252599 | 5880 | newSVOP(OP_CONST, 0, newSViv(PL_glob_index++))); |
1f2bfc8a | 5881 | o->op_type = OP_LIST; |
22c35a8c | 5882 | o->op_ppaddr = PL_ppaddr[OP_LIST]; |
1f2bfc8a | 5883 | cLISTOPo->op_first->op_type = OP_PUSHMARK; |
22c35a8c | 5884 | cLISTOPo->op_first->op_ppaddr = PL_ppaddr[OP_PUSHMARK]; |
1f2bfc8a | 5885 | o = newUNOP(OP_ENTERSUB, OPf_STACKED, |
aeea060c | 5886 | append_elem(OP_LIST, o, |
1f2bfc8a MB |
5887 | scalar(newUNOP(OP_RV2CV, 0, |
5888 | newGVOP(OP_GV, 0, gv))))); | |
d58bf5aa MB |
5889 | o = newUNOP(OP_NULL, 0, ck_subr(o)); |
5890 | o->op_targ = OP_GLOB; /* hint at what it used to be */ | |
5891 | return o; | |
b1cb66bf | 5892 | } |
5893 | gv = newGVgen("main"); | |
a0d0e21e | 5894 | gv_IOadd(gv); |
11343788 MB |
5895 | append_elem(OP_GLOB, o, newGVOP(OP_GV, 0, gv)); |
5896 | scalarkids(o); | |
649da076 | 5897 | return o; |
79072805 LW |
5898 | } |
5899 | ||
5900 | OP * | |
cea2e8a9 | 5901 | Perl_ck_grep(pTHX_ OP *o) |
79072805 LW |
5902 | { |
5903 | LOGOP *gwop; | |
5904 | OP *kid; | |
11343788 | 5905 | OPCODE type = o->op_type == OP_GREPSTART ? OP_GREPWHILE : OP_MAPWHILE; |
79072805 | 5906 | |
22c35a8c | 5907 | o->op_ppaddr = PL_ppaddr[OP_GREPSTART]; |
b7dc083c | 5908 | NewOp(1101, gwop, 1, LOGOP); |
aeea060c | 5909 | |
11343788 | 5910 | if (o->op_flags & OPf_STACKED) { |
a0d0e21e | 5911 | OP* k; |
11343788 MB |
5912 | o = ck_sort(o); |
5913 | kid = cLISTOPo->op_first->op_sibling; | |
5914 | for (k = cLISTOPo->op_first->op_sibling->op_next; k; k = k->op_next) { | |
a0d0e21e LW |
5915 | kid = k; |
5916 | } | |
5917 | kid->op_next = (OP*)gwop; | |
11343788 | 5918 | o->op_flags &= ~OPf_STACKED; |
93a17b20 | 5919 | } |
11343788 | 5920 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e LW |
5921 | if (type == OP_MAPWHILE) |
5922 | list(kid); | |
5923 | else | |
5924 | scalar(kid); | |
11343788 | 5925 | o = ck_fun(o); |
3280af22 | 5926 | if (PL_error_count) |
11343788 | 5927 | return o; |
aeea060c | 5928 | kid = cLISTOPo->op_first->op_sibling; |
79072805 | 5929 | if (kid->op_type != OP_NULL) |
cea2e8a9 | 5930 | Perl_croak(aTHX_ "panic: ck_grep"); |
79072805 LW |
5931 | kid = kUNOP->op_first; |
5932 | ||
a0d0e21e | 5933 | gwop->op_type = type; |
22c35a8c | 5934 | gwop->op_ppaddr = PL_ppaddr[type]; |
11343788 | 5935 | gwop->op_first = listkids(o); |
79072805 LW |
5936 | gwop->op_flags |= OPf_KIDS; |
5937 | gwop->op_private = 1; | |
5938 | gwop->op_other = LINKLIST(kid); | |
a0d0e21e | 5939 | gwop->op_targ = pad_alloc(type, SVs_PADTMP); |
79072805 LW |
5940 | kid->op_next = (OP*)gwop; |
5941 | ||
11343788 | 5942 | kid = cLISTOPo->op_first->op_sibling; |
a0d0e21e | 5943 | if (!kid || !kid->op_sibling) |
22c35a8c | 5944 | return too_few_arguments(o,PL_op_desc[o->op_type]); |
a0d0e21e LW |
5945 | for (kid = kid->op_sibling; kid; kid = kid->op_sibling) |
5946 | mod(kid, OP_GREPSTART); | |
5947 | ||
79072805 LW |
5948 | return (OP*)gwop; |
5949 | } | |
5950 | ||
5951 | OP * | |
cea2e8a9 | 5952 | Perl_ck_index(pTHX_ OP *o) |
79072805 | 5953 | { |
11343788 MB |
5954 | if (o->op_flags & OPf_KIDS) { |
5955 | OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
0b71040e LW |
5956 | if (kid) |
5957 | kid = kid->op_sibling; /* get past "big" */ | |
79072805 | 5958 | if (kid && kid->op_type == OP_CONST) |
2779dcf1 | 5959 | fbm_compile(((SVOP*)kid)->op_sv, 0); |
79072805 | 5960 | } |
11343788 | 5961 | return ck_fun(o); |
79072805 LW |
5962 | } |
5963 | ||
5964 | OP * | |
cea2e8a9 | 5965 | Perl_ck_lengthconst(pTHX_ OP *o) |
79072805 LW |
5966 | { |
5967 | /* XXX length optimization goes here */ | |
11343788 | 5968 | return ck_fun(o); |
79072805 LW |
5969 | } |
5970 | ||
5971 | OP * | |
cea2e8a9 | 5972 | Perl_ck_lfun(pTHX_ OP *o) |
79072805 | 5973 | { |
5dc0d613 MB |
5974 | OPCODE type = o->op_type; |
5975 | return modkids(ck_fun(o), type); | |
79072805 LW |
5976 | } |
5977 | ||
5978 | OP * | |
cea2e8a9 | 5979 | Perl_ck_defined(pTHX_ OP *o) /* 19990527 MJD */ |
69794302 | 5980 | { |
d0334bed GS |
5981 | if ((o->op_flags & OPf_KIDS) && ckWARN(WARN_DEPRECATED)) { |
5982 | switch (cUNOPo->op_first->op_type) { | |
5983 | case OP_RV2AV: | |
a8739d98 JH |
5984 | /* This is needed for |
5985 | if (defined %stash::) | |
5986 | to work. Do not break Tk. | |
5987 | */ | |
1c846c1f | 5988 | break; /* Globals via GV can be undef */ |
d0334bed GS |
5989 | case OP_PADAV: |
5990 | case OP_AASSIGN: /* Is this a good idea? */ | |
5991 | Perl_warner(aTHX_ WARN_DEPRECATED, | |
f10b0346 | 5992 | "defined(@array) is deprecated"); |
d0334bed | 5993 | Perl_warner(aTHX_ WARN_DEPRECATED, |
cc507455 | 5994 | "\t(Maybe you should just omit the defined()?)\n"); |
69794302 | 5995 | break; |
d0334bed | 5996 | case OP_RV2HV: |
a8739d98 JH |
5997 | /* This is needed for |
5998 | if (defined %stash::) | |
5999 | to work. Do not break Tk. | |
6000 | */ | |
1c846c1f | 6001 | break; /* Globals via GV can be undef */ |
d0334bed GS |
6002 | case OP_PADHV: |
6003 | Perl_warner(aTHX_ WARN_DEPRECATED, | |
894356b3 | 6004 | "defined(%%hash) is deprecated"); |
d0334bed | 6005 | Perl_warner(aTHX_ WARN_DEPRECATED, |
cc507455 | 6006 | "\t(Maybe you should just omit the defined()?)\n"); |
d0334bed GS |
6007 | break; |
6008 | default: | |
6009 | /* no warning */ | |
6010 | break; | |
6011 | } | |
69794302 MJD |
6012 | } |
6013 | return ck_rfun(o); | |
6014 | } | |
6015 | ||
6016 | OP * | |
cea2e8a9 | 6017 | Perl_ck_rfun(pTHX_ OP *o) |
8990e307 | 6018 | { |
5dc0d613 MB |
6019 | OPCODE type = o->op_type; |
6020 | return refkids(ck_fun(o), type); | |
8990e307 LW |
6021 | } |
6022 | ||
6023 | OP * | |
cea2e8a9 | 6024 | Perl_ck_listiob(pTHX_ OP *o) |
79072805 LW |
6025 | { |
6026 | register OP *kid; | |
aeea060c | 6027 | |
11343788 | 6028 | kid = cLISTOPo->op_first; |
79072805 | 6029 | if (!kid) { |
11343788 MB |
6030 | o = force_list(o); |
6031 | kid = cLISTOPo->op_first; | |
79072805 LW |
6032 | } |
6033 | if (kid->op_type == OP_PUSHMARK) | |
6034 | kid = kid->op_sibling; | |
11343788 | 6035 | if (kid && o->op_flags & OPf_STACKED) |
79072805 LW |
6036 | kid = kid->op_sibling; |
6037 | else if (kid && !kid->op_sibling) { /* print HANDLE; */ | |
6038 | if (kid->op_type == OP_CONST && kid->op_private & OPpCONST_BARE) { | |
11343788 | 6039 | o->op_flags |= OPf_STACKED; /* make it a filehandle */ |
748a9306 | 6040 | kid = newUNOP(OP_RV2GV, OPf_REF, scalar(kid)); |
11343788 MB |
6041 | cLISTOPo->op_first->op_sibling = kid; |
6042 | cLISTOPo->op_last = kid; | |
79072805 LW |
6043 | kid = kid->op_sibling; |
6044 | } | |
6045 | } | |
6046 | ||
6047 | if (!kid) | |
54b9620d | 6048 | append_elem(o->op_type, o, newDEFSVOP()); |
79072805 | 6049 | |
5dc0d613 | 6050 | o = listkids(o); |
bbce6d69 | 6051 | |
5dc0d613 | 6052 | o->op_private = 0; |
36477c24 | 6053 | #ifdef USE_LOCALE |
3280af22 | 6054 | if (PL_hints & HINT_LOCALE) |
5dc0d613 | 6055 | o->op_private |= OPpLOCALE; |
bbce6d69 | 6056 | #endif |
6057 | ||
5dc0d613 | 6058 | return o; |
bbce6d69 | 6059 | } |
6060 | ||
6061 | OP * | |
cea2e8a9 | 6062 | Perl_ck_fun_locale(pTHX_ OP *o) |
bbce6d69 | 6063 | { |
5dc0d613 | 6064 | o = ck_fun(o); |
bbce6d69 | 6065 | |
5dc0d613 | 6066 | o->op_private = 0; |
36477c24 | 6067 | #ifdef USE_LOCALE |
3280af22 | 6068 | if (PL_hints & HINT_LOCALE) |
5dc0d613 | 6069 | o->op_private |= OPpLOCALE; |
bbce6d69 | 6070 | #endif |
6071 | ||
5dc0d613 | 6072 | return o; |
bbce6d69 | 6073 | } |
6074 | ||
6075 | OP * | |
b162f9ea IZ |
6076 | Perl_ck_sassign(pTHX_ OP *o) |
6077 | { | |
6078 | OP *kid = cLISTOPo->op_first; | |
6079 | /* has a disposable target? */ | |
6080 | if ((PL_opargs[kid->op_type] & OA_TARGLEX) | |
6b66af17 GS |
6081 | && !(kid->op_flags & OPf_STACKED) |
6082 | /* Cannot steal the second time! */ | |
6083 | && !(kid->op_private & OPpTARGET_MY)) | |
b162f9ea IZ |
6084 | { |
6085 | OP *kkid = kid->op_sibling; | |
6086 | ||
6087 | /* Can just relocate the target. */ | |
2c2d71f5 JH |
6088 | if (kkid && kkid->op_type == OP_PADSV |
6089 | && !(kkid->op_private & OPpLVAL_INTRO)) | |
6090 | { | |
b162f9ea | 6091 | kid->op_targ = kkid->op_targ; |
743e66e6 | 6092 | kkid->op_targ = 0; |
b162f9ea IZ |
6093 | /* Now we do not need PADSV and SASSIGN. */ |
6094 | kid->op_sibling = o->op_sibling; /* NULL */ | |
6095 | cLISTOPo->op_first = NULL; | |
6096 | op_free(o); | |
6097 | op_free(kkid); | |
6098 | kid->op_private |= OPpTARGET_MY; /* Used for context settings */ | |
6099 | return kid; | |
6100 | } | |
6101 | } | |
6102 | return o; | |
6103 | } | |
6104 | ||
6105 | OP * | |
cea2e8a9 | 6106 | Perl_ck_scmp(pTHX_ OP *o) |
bbce6d69 | 6107 | { |
5dc0d613 | 6108 | o->op_private = 0; |
36477c24 | 6109 | #ifdef USE_LOCALE |
3280af22 | 6110 | if (PL_hints & HINT_LOCALE) |
5dc0d613 | 6111 | o->op_private |= OPpLOCALE; |
bbce6d69 | 6112 | #endif |
36477c24 | 6113 | |
5dc0d613 | 6114 | return o; |
79072805 LW |
6115 | } |
6116 | ||
6117 | OP * | |
cea2e8a9 | 6118 | Perl_ck_match(pTHX_ OP *o) |
79072805 | 6119 | { |
5dc0d613 | 6120 | o->op_private |= OPpRUNTIME; |
11343788 | 6121 | return o; |
79072805 LW |
6122 | } |
6123 | ||
6124 | OP * | |
f5d5a27c CS |
6125 | Perl_ck_method(pTHX_ OP *o) |
6126 | { | |
6127 | OP *kid = cUNOPo->op_first; | |
6128 | if (kid->op_type == OP_CONST) { | |
6129 | SV* sv = kSVOP->op_sv; | |
6130 | if (!(strchr(SvPVX(sv), ':') || strchr(SvPVX(sv), '\''))) { | |
6131 | OP *cmop; | |
1c846c1f NIS |
6132 | if (!SvREADONLY(sv) || !SvFAKE(sv)) { |
6133 | sv = newSVpvn_share(SvPVX(sv), SvCUR(sv), 0); | |
6134 | } | |
6135 | else { | |
6136 | kSVOP->op_sv = Nullsv; | |
6137 | } | |
f5d5a27c | 6138 | cmop = newSVOP(OP_METHOD_NAMED, 0, sv); |
f5d5a27c CS |
6139 | op_free(o); |
6140 | return cmop; | |
6141 | } | |
6142 | } | |
6143 | return o; | |
6144 | } | |
6145 | ||
6146 | OP * | |
cea2e8a9 | 6147 | Perl_ck_null(pTHX_ OP *o) |
79072805 | 6148 | { |
11343788 | 6149 | return o; |
79072805 LW |
6150 | } |
6151 | ||
6152 | OP * | |
16fe6d59 GS |
6153 | Perl_ck_open(pTHX_ OP *o) |
6154 | { | |
6155 | HV *table = GvHV(PL_hintgv); | |
6156 | if (table) { | |
6157 | SV **svp; | |
6158 | I32 mode; | |
6159 | svp = hv_fetch(table, "open_IN", 7, FALSE); | |
6160 | if (svp && *svp) { | |
6161 | mode = mode_from_discipline(*svp); | |
6162 | if (mode & O_BINARY) | |
6163 | o->op_private |= OPpOPEN_IN_RAW; | |
6164 | else if (mode & O_TEXT) | |
6165 | o->op_private |= OPpOPEN_IN_CRLF; | |
6166 | } | |
6167 | ||
6168 | svp = hv_fetch(table, "open_OUT", 8, FALSE); | |
6169 | if (svp && *svp) { | |
6170 | mode = mode_from_discipline(*svp); | |
6171 | if (mode & O_BINARY) | |
6172 | o->op_private |= OPpOPEN_OUT_RAW; | |
6173 | else if (mode & O_TEXT) | |
6174 | o->op_private |= OPpOPEN_OUT_CRLF; | |
6175 | } | |
6176 | } | |
6177 | if (o->op_type == OP_BACKTICK) | |
6178 | return o; | |
6179 | return ck_fun(o); | |
6180 | } | |
6181 | ||
6182 | OP * | |
cea2e8a9 | 6183 | Perl_ck_repeat(pTHX_ OP *o) |
79072805 | 6184 | { |
11343788 MB |
6185 | if (cBINOPo->op_first->op_flags & OPf_PARENS) { |
6186 | o->op_private |= OPpREPEAT_DOLIST; | |
6187 | cBINOPo->op_first = force_list(cBINOPo->op_first); | |
79072805 LW |
6188 | } |
6189 | else | |
11343788 MB |
6190 | scalar(o); |
6191 | return o; | |
79072805 LW |
6192 | } |
6193 | ||
6194 | OP * | |
cea2e8a9 | 6195 | Perl_ck_require(pTHX_ OP *o) |
8990e307 | 6196 | { |
11343788 MB |
6197 | if (o->op_flags & OPf_KIDS) { /* Shall we supply missing .pm? */ |
6198 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
8990e307 LW |
6199 | |
6200 | if (kid->op_type == OP_CONST && (kid->op_private & OPpCONST_BARE)) { | |
8990e307 | 6201 | char *s; |
a0d0e21e LW |
6202 | for (s = SvPVX(kid->op_sv); *s; s++) { |
6203 | if (*s == ':' && s[1] == ':') { | |
6204 | *s = '/'; | |
1aef975c | 6205 | Move(s+2, s+1, strlen(s+2)+1, char); |
a0d0e21e LW |
6206 | --SvCUR(kid->op_sv); |
6207 | } | |
8990e307 | 6208 | } |
ce3b816e GS |
6209 | if (SvREADONLY(kid->op_sv)) { |
6210 | SvREADONLY_off(kid->op_sv); | |
6211 | sv_catpvn(kid->op_sv, ".pm", 3); | |
6212 | SvREADONLY_on(kid->op_sv); | |
6213 | } | |
6214 | else | |
6215 | sv_catpvn(kid->op_sv, ".pm", 3); | |
8990e307 LW |
6216 | } |
6217 | } | |
11343788 | 6218 | return ck_fun(o); |
8990e307 LW |
6219 | } |
6220 | ||
78f9721b SM |
6221 | OP * |
6222 | Perl_ck_return(pTHX_ OP *o) | |
6223 | { | |
6224 | OP *kid; | |
6225 | if (CvLVALUE(PL_compcv)) { | |
6226 | for (kid = cLISTOPo->op_first->op_sibling; kid; kid = kid->op_sibling) | |
6227 | mod(kid, OP_LEAVESUBLV); | |
6228 | } | |
6229 | return o; | |
6230 | } | |
6231 | ||
22c35a8c | 6232 | #if 0 |
8990e307 | 6233 | OP * |
cea2e8a9 | 6234 | Perl_ck_retarget(pTHX_ OP *o) |
79072805 | 6235 | { |
cea2e8a9 | 6236 | Perl_croak(aTHX_ "NOT IMPL LINE %d",__LINE__); |
79072805 | 6237 | /* STUB */ |
11343788 | 6238 | return o; |
79072805 | 6239 | } |
22c35a8c | 6240 | #endif |
79072805 LW |
6241 | |
6242 | OP * | |
cea2e8a9 | 6243 | Perl_ck_select(pTHX_ OP *o) |
79072805 | 6244 | { |
c07a80fd | 6245 | OP* kid; |
11343788 MB |
6246 | if (o->op_flags & OPf_KIDS) { |
6247 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
2304df62 | 6248 | if (kid && kid->op_sibling) { |
11343788 | 6249 | o->op_type = OP_SSELECT; |
22c35a8c | 6250 | o->op_ppaddr = PL_ppaddr[OP_SSELECT]; |
11343788 MB |
6251 | o = ck_fun(o); |
6252 | return fold_constants(o); | |
79072805 LW |
6253 | } |
6254 | } | |
11343788 MB |
6255 | o = ck_fun(o); |
6256 | kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
c07a80fd | 6257 | if (kid && kid->op_type == OP_RV2GV) |
6258 | kid->op_private &= ~HINT_STRICT_REFS; | |
11343788 | 6259 | return o; |
79072805 LW |
6260 | } |
6261 | ||
6262 | OP * | |
cea2e8a9 | 6263 | Perl_ck_shift(pTHX_ OP *o) |
79072805 | 6264 | { |
11343788 | 6265 | I32 type = o->op_type; |
79072805 | 6266 | |
11343788 | 6267 | if (!(o->op_flags & OPf_KIDS)) { |
6d4ff0d2 MB |
6268 | OP *argop; |
6269 | ||
11343788 | 6270 | op_free(o); |
6d4ff0d2 | 6271 | #ifdef USE_THREADS |
533c011a | 6272 | if (!CvUNIQUE(PL_compcv)) { |
6d4ff0d2 | 6273 | argop = newOP(OP_PADAV, OPf_REF); |
6b88bc9c | 6274 | argop->op_targ = 0; /* PL_curpad[0] is @_ */ |
6d4ff0d2 MB |
6275 | } |
6276 | else { | |
6277 | argop = newUNOP(OP_RV2AV, 0, | |
6278 | scalar(newGVOP(OP_GV, 0, | |
6279 | gv_fetchpv("ARGV", TRUE, SVt_PVAV)))); | |
6280 | } | |
6281 | #else | |
6282 | argop = newUNOP(OP_RV2AV, 0, | |
3280af22 NIS |
6283 | scalar(newGVOP(OP_GV, 0, !CvUNIQUE(PL_compcv) ? |
6284 | PL_defgv : gv_fetchpv("ARGV", TRUE, SVt_PVAV)))); | |
6d4ff0d2 MB |
6285 | #endif /* USE_THREADS */ |
6286 | return newUNOP(type, 0, scalar(argop)); | |
79072805 | 6287 | } |
11343788 | 6288 | return scalar(modkids(ck_fun(o), type)); |
79072805 LW |
6289 | } |
6290 | ||
6291 | OP * | |
cea2e8a9 | 6292 | Perl_ck_sort(pTHX_ OP *o) |
79072805 | 6293 | { |
8e3f9bdf | 6294 | OP *firstkid; |
5dc0d613 | 6295 | o->op_private = 0; |
36477c24 | 6296 | #ifdef USE_LOCALE |
3280af22 | 6297 | if (PL_hints & HINT_LOCALE) |
5dc0d613 | 6298 | o->op_private |= OPpLOCALE; |
bbce6d69 | 6299 | #endif |
6300 | ||
9ea6e965 | 6301 | if (o->op_type == OP_SORT && o->op_flags & OPf_STACKED) |
51a19bc0 | 6302 | simplify_sort(o); |
8e3f9bdf GS |
6303 | firstkid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ |
6304 | if (o->op_flags & OPf_STACKED) { /* may have been cleared */ | |
463ee0b2 | 6305 | OP *k; |
8e3f9bdf | 6306 | OP *kid = cUNOPx(firstkid)->op_first; /* get past null */ |
79072805 | 6307 | |
463ee0b2 | 6308 | if (kid->op_type == OP_SCOPE || kid->op_type == OP_LEAVE) { |
79072805 | 6309 | linklist(kid); |
463ee0b2 LW |
6310 | if (kid->op_type == OP_SCOPE) { |
6311 | k = kid->op_next; | |
6312 | kid->op_next = 0; | |
79072805 | 6313 | } |
463ee0b2 | 6314 | else if (kid->op_type == OP_LEAVE) { |
11343788 | 6315 | if (o->op_type == OP_SORT) { |
748a9306 LW |
6316 | null(kid); /* wipe out leave */ |
6317 | kid->op_next = kid; | |
463ee0b2 | 6318 | |
748a9306 LW |
6319 | for (k = kLISTOP->op_first->op_next; k; k = k->op_next) { |
6320 | if (k->op_next == kid) | |
6321 | k->op_next = 0; | |
71a29c3c GS |
6322 | /* don't descend into loops */ |
6323 | else if (k->op_type == OP_ENTERLOOP | |
6324 | || k->op_type == OP_ENTERITER) | |
6325 | { | |
6326 | k = cLOOPx(k)->op_lastop; | |
6327 | } | |
748a9306 | 6328 | } |
463ee0b2 | 6329 | } |
748a9306 LW |
6330 | else |
6331 | kid->op_next = 0; /* just disconnect the leave */ | |
a0d0e21e | 6332 | k = kLISTOP->op_first; |
463ee0b2 | 6333 | } |
a0d0e21e LW |
6334 | peep(k); |
6335 | ||
8e3f9bdf GS |
6336 | kid = firstkid; |
6337 | if (o->op_type == OP_SORT) { | |
6338 | /* provide scalar context for comparison function/block */ | |
6339 | kid = scalar(kid); | |
a0d0e21e | 6340 | kid->op_next = kid; |
8e3f9bdf | 6341 | } |
a0d0e21e LW |
6342 | else |
6343 | kid->op_next = k; | |
11343788 | 6344 | o->op_flags |= OPf_SPECIAL; |
79072805 | 6345 | } |
c6e96bcb | 6346 | else if (kid->op_type == OP_RV2SV || kid->op_type == OP_PADSV) |
8e3f9bdf GS |
6347 | null(firstkid); |
6348 | ||
6349 | firstkid = firstkid->op_sibling; | |
79072805 | 6350 | } |
bbce6d69 | 6351 | |
8e3f9bdf GS |
6352 | /* provide list context for arguments */ |
6353 | if (o->op_type == OP_SORT) | |
6354 | list(firstkid); | |
6355 | ||
11343788 | 6356 | return o; |
79072805 | 6357 | } |
bda4119b GS |
6358 | |
6359 | STATIC void | |
cea2e8a9 | 6360 | S_simplify_sort(pTHX_ OP *o) |
9c007264 JH |
6361 | { |
6362 | register OP *kid = cLISTOPo->op_first->op_sibling; /* get past pushmark */ | |
6363 | OP *k; | |
6364 | int reversed; | |
350de78d | 6365 | GV *gv; |
9c007264 JH |
6366 | if (!(o->op_flags & OPf_STACKED)) |
6367 | return; | |
1c846c1f NIS |
6368 | GvMULTI_on(gv_fetchpv("a", TRUE, SVt_PV)); |
6369 | GvMULTI_on(gv_fetchpv("b", TRUE, SVt_PV)); | |
82092f1d | 6370 | kid = kUNOP->op_first; /* get past null */ |
9c007264 JH |
6371 | if (kid->op_type != OP_SCOPE) |
6372 | return; | |
6373 | kid = kLISTOP->op_last; /* get past scope */ | |
6374 | switch(kid->op_type) { | |
6375 | case OP_NCMP: | |
6376 | case OP_I_NCMP: | |
6377 | case OP_SCMP: | |
6378 | break; | |
6379 | default: | |
6380 | return; | |
6381 | } | |
6382 | k = kid; /* remember this node*/ | |
6383 | if (kBINOP->op_first->op_type != OP_RV2SV) | |
6384 | return; | |
6385 | kid = kBINOP->op_first; /* get past cmp */ | |
6386 | if (kUNOP->op_first->op_type != OP_GV) | |
6387 | return; | |
6388 | kid = kUNOP->op_first; /* get past rv2sv */ | |
638eceb6 | 6389 | gv = kGVOP_gv; |
350de78d | 6390 | if (GvSTASH(gv) != PL_curstash) |
9c007264 | 6391 | return; |
350de78d | 6392 | if (strEQ(GvNAME(gv), "a")) |
9c007264 | 6393 | reversed = 0; |
0f79a09d | 6394 | else if (strEQ(GvNAME(gv), "b")) |
9c007264 JH |
6395 | reversed = 1; |
6396 | else | |
6397 | return; | |
6398 | kid = k; /* back to cmp */ | |
6399 | if (kBINOP->op_last->op_type != OP_RV2SV) | |
6400 | return; | |
6401 | kid = kBINOP->op_last; /* down to 2nd arg */ | |
6402 | if (kUNOP->op_first->op_type != OP_GV) | |
6403 | return; | |
6404 | kid = kUNOP->op_first; /* get past rv2sv */ | |
638eceb6 | 6405 | gv = kGVOP_gv; |
350de78d | 6406 | if (GvSTASH(gv) != PL_curstash |
9c007264 | 6407 | || ( reversed |
350de78d GS |
6408 | ? strNE(GvNAME(gv), "a") |
6409 | : strNE(GvNAME(gv), "b"))) | |
9c007264 JH |
6410 | return; |
6411 | o->op_flags &= ~(OPf_STACKED | OPf_SPECIAL); | |
6412 | if (reversed) | |
6413 | o->op_private |= OPpSORT_REVERSE; | |
6414 | if (k->op_type == OP_NCMP) | |
6415 | o->op_private |= OPpSORT_NUMERIC; | |
6416 | if (k->op_type == OP_I_NCMP) | |
6417 | o->op_private |= OPpSORT_NUMERIC | OPpSORT_INTEGER; | |
e507f050 SM |
6418 | kid = cLISTOPo->op_first->op_sibling; |
6419 | cLISTOPo->op_first->op_sibling = kid->op_sibling; /* bypass old block */ | |
6420 | op_free(kid); /* then delete it */ | |
9c007264 | 6421 | } |
79072805 LW |
6422 | |
6423 | OP * | |
cea2e8a9 | 6424 | Perl_ck_split(pTHX_ OP *o) |
79072805 LW |
6425 | { |
6426 | register OP *kid; | |
aeea060c | 6427 | |
11343788 MB |
6428 | if (o->op_flags & OPf_STACKED) |
6429 | return no_fh_allowed(o); | |
79072805 | 6430 | |
11343788 | 6431 | kid = cLISTOPo->op_first; |
8990e307 | 6432 | if (kid->op_type != OP_NULL) |
cea2e8a9 | 6433 | Perl_croak(aTHX_ "panic: ck_split"); |
8990e307 | 6434 | kid = kid->op_sibling; |
11343788 MB |
6435 | op_free(cLISTOPo->op_first); |
6436 | cLISTOPo->op_first = kid; | |
85e6fe83 | 6437 | if (!kid) { |
79cb57f6 | 6438 | cLISTOPo->op_first = kid = newSVOP(OP_CONST, 0, newSVpvn(" ", 1)); |
11343788 | 6439 | cLISTOPo->op_last = kid; /* There was only one element previously */ |
85e6fe83 | 6440 | } |
79072805 | 6441 | |
de4bf5b3 | 6442 | if (kid->op_type != OP_MATCH || kid->op_flags & OPf_STACKED) { |
79072805 | 6443 | OP *sibl = kid->op_sibling; |
463ee0b2 | 6444 | kid->op_sibling = 0; |
79072805 | 6445 | kid = pmruntime( newPMOP(OP_MATCH, OPf_SPECIAL), kid, Nullop); |
11343788 MB |
6446 | if (cLISTOPo->op_first == cLISTOPo->op_last) |
6447 | cLISTOPo->op_last = kid; | |
6448 | cLISTOPo->op_first = kid; | |
79072805 LW |
6449 | kid->op_sibling = sibl; |
6450 | } | |
6451 | ||
6452 | kid->op_type = OP_PUSHRE; | |
22c35a8c | 6453 | kid->op_ppaddr = PL_ppaddr[OP_PUSHRE]; |
79072805 LW |
6454 | scalar(kid); |
6455 | ||
6456 | if (!kid->op_sibling) | |
54b9620d | 6457 | append_elem(OP_SPLIT, o, newDEFSVOP()); |
79072805 LW |
6458 | |
6459 | kid = kid->op_sibling; | |
6460 | scalar(kid); | |
6461 | ||
6462 | if (!kid->op_sibling) | |
11343788 | 6463 | append_elem(OP_SPLIT, o, newSVOP(OP_CONST, 0, newSViv(0))); |
79072805 LW |
6464 | |
6465 | kid = kid->op_sibling; | |
6466 | scalar(kid); | |
6467 | ||
6468 | if (kid->op_sibling) | |
22c35a8c | 6469 | return too_many_arguments(o,PL_op_desc[o->op_type]); |
79072805 | 6470 | |
11343788 | 6471 | return o; |
79072805 LW |
6472 | } |
6473 | ||
6474 | OP * | |
1c846c1f | 6475 | Perl_ck_join(pTHX_ OP *o) |
eb6e2d6f GS |
6476 | { |
6477 | if (ckWARN(WARN_SYNTAX)) { | |
6478 | OP *kid = cLISTOPo->op_first->op_sibling; | |
6479 | if (kid && kid->op_type == OP_MATCH) { | |
6480 | char *pmstr = "STRING"; | |
6481 | if (kPMOP->op_pmregexp) | |
6482 | pmstr = kPMOP->op_pmregexp->precomp; | |
6483 | Perl_warner(aTHX_ WARN_SYNTAX, | |
6484 | "/%s/ should probably be written as \"%s\"", | |
6485 | pmstr, pmstr); | |
6486 | } | |
6487 | } | |
6488 | return ck_fun(o); | |
6489 | } | |
6490 | ||
6491 | OP * | |
cea2e8a9 | 6492 | Perl_ck_subr(pTHX_ OP *o) |
79072805 | 6493 | { |
11343788 MB |
6494 | OP *prev = ((cUNOPo->op_first->op_sibling) |
6495 | ? cUNOPo : ((UNOP*)cUNOPo->op_first))->op_first; | |
6496 | OP *o2 = prev->op_sibling; | |
4633a7c4 LW |
6497 | OP *cvop; |
6498 | char *proto = 0; | |
6499 | CV *cv = 0; | |
46fc3d4c | 6500 | GV *namegv = 0; |
4633a7c4 LW |
6501 | int optional = 0; |
6502 | I32 arg = 0; | |
2d8e6c8d | 6503 | STRLEN n_a; |
4633a7c4 | 6504 | |
d3011074 | 6505 | o->op_private |= OPpENTERSUB_HASTARG; |
11343788 | 6506 | for (cvop = o2; cvop->op_sibling; cvop = cvop->op_sibling) ; |
4633a7c4 LW |
6507 | if (cvop->op_type == OP_RV2CV) { |
6508 | SVOP* tmpop; | |
11343788 | 6509 | o->op_private |= (cvop->op_private & OPpENTERSUB_AMPER); |
4633a7c4 LW |
6510 | null(cvop); /* disable rv2cv */ |
6511 | tmpop = (SVOP*)((UNOP*)cvop)->op_first; | |
76cd736e | 6512 | if (tmpop->op_type == OP_GV && !(o->op_private & OPpENTERSUB_AMPER)) { |
638eceb6 | 6513 | GV *gv = cGVOPx_gv(tmpop); |
350de78d | 6514 | cv = GvCVu(gv); |
76cd736e GS |
6515 | if (!cv) |
6516 | tmpop->op_private |= OPpEARLY_CV; | |
6517 | else if (SvPOK(cv)) { | |
350de78d | 6518 | namegv = CvANON(cv) ? gv : CvGV(cv); |
2d8e6c8d | 6519 | proto = SvPV((SV*)cv, n_a); |
46fc3d4c | 6520 | } |
4633a7c4 LW |
6521 | } |
6522 | } | |
f5d5a27c | 6523 | else if (cvop->op_type == OP_METHOD || cvop->op_type == OP_METHOD_NAMED) { |
7a52d87a GS |
6524 | if (o2->op_type == OP_CONST) |
6525 | o2->op_private &= ~OPpCONST_STRICT; | |
58a40671 GS |
6526 | else if (o2->op_type == OP_LIST) { |
6527 | OP *o = ((UNOP*)o2)->op_first->op_sibling; | |
6528 | if (o && o->op_type == OP_CONST) | |
6529 | o->op_private &= ~OPpCONST_STRICT; | |
6530 | } | |
7a52d87a | 6531 | } |
3280af22 NIS |
6532 | o->op_private |= (PL_hints & HINT_STRICT_REFS); |
6533 | if (PERLDB_SUB && PL_curstash != PL_debstash) | |
11343788 MB |
6534 | o->op_private |= OPpENTERSUB_DB; |
6535 | while (o2 != cvop) { | |
4633a7c4 LW |
6536 | if (proto) { |
6537 | switch (*proto) { | |
6538 | case '\0': | |
5dc0d613 | 6539 | return too_many_arguments(o, gv_ename(namegv)); |
4633a7c4 LW |
6540 | case ';': |
6541 | optional = 1; | |
6542 | proto++; | |
6543 | continue; | |
6544 | case '$': | |
6545 | proto++; | |
6546 | arg++; | |
11343788 | 6547 | scalar(o2); |
4633a7c4 LW |
6548 | break; |
6549 | case '%': | |
6550 | case '@': | |
11343788 | 6551 | list(o2); |
4633a7c4 LW |
6552 | arg++; |
6553 | break; | |
6554 | case '&': | |
6555 | proto++; | |
6556 | arg++; | |
11343788 | 6557 | if (o2->op_type != OP_REFGEN && o2->op_type != OP_UNDEF) |
75fc29ea GS |
6558 | bad_type(arg, |
6559 | arg == 1 ? "block or sub {}" : "sub {}", | |
6560 | gv_ename(namegv), o2); | |
4633a7c4 LW |
6561 | break; |
6562 | case '*': | |
2ba6ecf4 | 6563 | /* '*' allows any scalar type, including bareword */ |
4633a7c4 LW |
6564 | proto++; |
6565 | arg++; | |
11343788 | 6566 | if (o2->op_type == OP_RV2GV) |
2ba6ecf4 | 6567 | goto wrapref; /* autoconvert GLOB -> GLOBref */ |
7a52d87a GS |
6568 | else if (o2->op_type == OP_CONST) |
6569 | o2->op_private &= ~OPpCONST_STRICT; | |
9675f7ac GS |
6570 | else if (o2->op_type == OP_ENTERSUB) { |
6571 | /* accidental subroutine, revert to bareword */ | |
6572 | OP *gvop = ((UNOP*)o2)->op_first; | |
6573 | if (gvop && gvop->op_type == OP_NULL) { | |
6574 | gvop = ((UNOP*)gvop)->op_first; | |
6575 | if (gvop) { | |
6576 | for (; gvop->op_sibling; gvop = gvop->op_sibling) | |
6577 | ; | |
6578 | if (gvop && | |
6579 | (gvop->op_private & OPpENTERSUB_NOPAREN) && | |
6580 | (gvop = ((UNOP*)gvop)->op_first) && | |
6581 | gvop->op_type == OP_GV) | |
6582 | { | |
638eceb6 | 6583 | GV *gv = cGVOPx_gv(gvop); |
9675f7ac | 6584 | OP *sibling = o2->op_sibling; |
2692f720 | 6585 | SV *n = newSVpvn("",0); |
9675f7ac | 6586 | op_free(o2); |
2692f720 GS |
6587 | gv_fullname3(n, gv, ""); |
6588 | if (SvCUR(n)>6 && strnEQ(SvPVX(n),"main::",6)) | |
6589 | sv_chop(n, SvPVX(n)+6); | |
6590 | o2 = newSVOP(OP_CONST, 0, n); | |
9675f7ac GS |
6591 | prev->op_sibling = o2; |
6592 | o2->op_sibling = sibling; | |
6593 | } | |
6594 | } | |
6595 | } | |
6596 | } | |
2ba6ecf4 GS |
6597 | scalar(o2); |
6598 | break; | |
4633a7c4 LW |
6599 | case '\\': |
6600 | proto++; | |
6601 | arg++; | |
6602 | switch (*proto++) { | |
6603 | case '*': | |
11343788 | 6604 | if (o2->op_type != OP_RV2GV) |
5dc0d613 | 6605 | bad_type(arg, "symbol", gv_ename(namegv), o2); |
4633a7c4 LW |
6606 | goto wrapref; |
6607 | case '&': | |
75fc29ea GS |
6608 | if (o2->op_type != OP_ENTERSUB) |
6609 | bad_type(arg, "subroutine entry", gv_ename(namegv), o2); | |
4633a7c4 LW |
6610 | goto wrapref; |
6611 | case '$': | |
386acf99 GS |
6612 | if (o2->op_type != OP_RV2SV |
6613 | && o2->op_type != OP_PADSV | |
1c01eb51 GS |
6614 | && o2->op_type != OP_HELEM |
6615 | && o2->op_type != OP_AELEM | |
386acf99 GS |
6616 | && o2->op_type != OP_THREADSV) |
6617 | { | |
5dc0d613 | 6618 | bad_type(arg, "scalar", gv_ename(namegv), o2); |
386acf99 | 6619 | } |
4633a7c4 LW |
6620 | goto wrapref; |
6621 | case '@': | |
11343788 | 6622 | if (o2->op_type != OP_RV2AV && o2->op_type != OP_PADAV) |
5dc0d613 | 6623 | bad_type(arg, "array", gv_ename(namegv), o2); |
4633a7c4 LW |
6624 | goto wrapref; |
6625 | case '%': | |
11343788 | 6626 | if (o2->op_type != OP_RV2HV && o2->op_type != OP_PADHV) |
5dc0d613 | 6627 | bad_type(arg, "hash", gv_ename(namegv), o2); |
4633a7c4 LW |
6628 | wrapref: |
6629 | { | |
11343788 | 6630 | OP* kid = o2; |
6fa846a0 | 6631 | OP* sib = kid->op_sibling; |
4633a7c4 | 6632 | kid->op_sibling = 0; |
6fa846a0 GS |
6633 | o2 = newUNOP(OP_REFGEN, 0, kid); |
6634 | o2->op_sibling = sib; | |
e858de61 | 6635 | prev->op_sibling = o2; |
4633a7c4 LW |
6636 | } |
6637 | break; | |
6638 | default: goto oops; | |
6639 | } | |
6640 | break; | |
b1cb66bf | 6641 | case ' ': |
6642 | proto++; | |
6643 | continue; | |
4633a7c4 LW |
6644 | default: |
6645 | oops: | |
cea2e8a9 | 6646 | Perl_croak(aTHX_ "Malformed prototype for %s: %s", |
2d8e6c8d | 6647 | gv_ename(namegv), SvPV((SV*)cv, n_a)); |
4633a7c4 LW |
6648 | } |
6649 | } | |
6650 | else | |
11343788 MB |
6651 | list(o2); |
6652 | mod(o2, OP_ENTERSUB); | |
6653 | prev = o2; | |
6654 | o2 = o2->op_sibling; | |
4633a7c4 | 6655 | } |
fb73857a | 6656 | if (proto && !optional && |
6657 | (*proto && *proto != '@' && *proto != '%' && *proto != ';')) | |
5dc0d613 | 6658 | return too_few_arguments(o, gv_ename(namegv)); |
11343788 | 6659 | return o; |
79072805 LW |
6660 | } |
6661 | ||
6662 | OP * | |
cea2e8a9 | 6663 | Perl_ck_svconst(pTHX_ OP *o) |
8990e307 | 6664 | { |
11343788 MB |
6665 | SvREADONLY_on(cSVOPo->op_sv); |
6666 | return o; | |
8990e307 LW |
6667 | } |
6668 | ||
6669 | OP * | |
cea2e8a9 | 6670 | Perl_ck_trunc(pTHX_ OP *o) |
79072805 | 6671 | { |
11343788 MB |
6672 | if (o->op_flags & OPf_KIDS) { |
6673 | SVOP *kid = (SVOP*)cUNOPo->op_first; | |
79072805 | 6674 | |
a0d0e21e LW |
6675 | if (kid->op_type == OP_NULL) |
6676 | kid = (SVOP*)kid->op_sibling; | |
bb53490d GS |
6677 | if (kid && kid->op_type == OP_CONST && |
6678 | (kid->op_private & OPpCONST_BARE)) | |
6679 | { | |
11343788 | 6680 | o->op_flags |= OPf_SPECIAL; |
bb53490d GS |
6681 | kid->op_private &= ~OPpCONST_STRICT; |
6682 | } | |
79072805 | 6683 | } |
11343788 | 6684 | return ck_fun(o); |
79072805 LW |
6685 | } |
6686 | ||
35fba0d9 RG |
6687 | OP * |
6688 | Perl_ck_substr(pTHX_ OP *o) | |
6689 | { | |
6690 | o = ck_fun(o); | |
6691 | if ((o->op_flags & OPf_KIDS) && o->op_private == 4) { | |
6692 | OP *kid = cLISTOPo->op_first; | |
6693 | ||
6694 | if (kid->op_type == OP_NULL) | |
6695 | kid = kid->op_sibling; | |
6696 | if (kid) | |
6697 | kid->op_flags |= OPf_MOD; | |
6698 | ||
6699 | } | |
6700 | return o; | |
6701 | } | |
6702 | ||
463ee0b2 LW |
6703 | /* A peephole optimizer. We visit the ops in the order they're to execute. */ |
6704 | ||
79072805 | 6705 | void |
864dbfa3 | 6706 | Perl_peep(pTHX_ register OP *o) |
79072805 LW |
6707 | { |
6708 | register OP* oldop = 0; | |
2d8e6c8d GS |
6709 | STRLEN n_a; |
6710 | ||
a0d0e21e | 6711 | if (!o || o->op_seq) |
79072805 | 6712 | return; |
a0d0e21e | 6713 | ENTER; |
462e5cf6 | 6714 | SAVEOP(); |
7766f137 | 6715 | SAVEVPTR(PL_curcop); |
a0d0e21e LW |
6716 | for (; o; o = o->op_next) { |
6717 | if (o->op_seq) | |
6718 | break; | |
3280af22 NIS |
6719 | if (!PL_op_seqmax) |
6720 | PL_op_seqmax++; | |
533c011a | 6721 | PL_op = o; |
a0d0e21e | 6722 | switch (o->op_type) { |
acb36ea4 | 6723 | case OP_SETSTATE: |
a0d0e21e LW |
6724 | case OP_NEXTSTATE: |
6725 | case OP_DBSTATE: | |
3280af22 NIS |
6726 | PL_curcop = ((COP*)o); /* for warnings */ |
6727 | o->op_seq = PL_op_seqmax++; | |
a0d0e21e LW |
6728 | break; |
6729 | ||
a0d0e21e | 6730 | case OP_CONST: |
7a52d87a GS |
6731 | if (cSVOPo->op_private & OPpCONST_STRICT) |
6732 | no_bareword_allowed(o); | |
7766f137 GS |
6733 | #ifdef USE_ITHREADS |
6734 | /* Relocate sv to the pad for thread safety. | |
6735 | * Despite being a "constant", the SV is written to, | |
6736 | * for reference counts, sv_upgrade() etc. */ | |
6737 | if (cSVOP->op_sv) { | |
6738 | PADOFFSET ix = pad_alloc(OP_CONST, SVs_PADTMP); | |
6a7129a1 GS |
6739 | if (SvPADTMP(cSVOPo->op_sv)) { |
6740 | /* If op_sv is already a PADTMP then it is being used by | |
9a049f1c | 6741 | * some pad, so make a copy. */ |
6a7129a1 GS |
6742 | sv_setsv(PL_curpad[ix],cSVOPo->op_sv); |
6743 | SvREADONLY_on(PL_curpad[ix]); | |
6744 | SvREFCNT_dec(cSVOPo->op_sv); | |
6745 | } | |
6746 | else { | |
6747 | SvREFCNT_dec(PL_curpad[ix]); | |
6748 | SvPADTMP_on(cSVOPo->op_sv); | |
6749 | PL_curpad[ix] = cSVOPo->op_sv; | |
9a049f1c JT |
6750 | /* XXX I don't know how this isn't readonly already. */ |
6751 | SvREADONLY_on(PL_curpad[ix]); | |
6a7129a1 | 6752 | } |
7766f137 GS |
6753 | cSVOPo->op_sv = Nullsv; |
6754 | o->op_targ = ix; | |
6755 | } | |
6756 | #endif | |
07447971 GS |
6757 | o->op_seq = PL_op_seqmax++; |
6758 | break; | |
6759 | ||
ed7ab888 | 6760 | case OP_CONCAT: |
b162f9ea IZ |
6761 | if (o->op_next && o->op_next->op_type == OP_STRINGIFY) { |
6762 | if (o->op_next->op_private & OPpTARGET_MY) { | |
69b47968 | 6763 | if (o->op_flags & OPf_STACKED) /* chained concats */ |
b162f9ea | 6764 | goto ignore_optimization; |
cd06dffe | 6765 | else { |
07447971 | 6766 | /* assert(PL_opargs[o->op_type] & OA_TARGLEX); */ |
b162f9ea | 6767 | o->op_targ = o->op_next->op_targ; |
743e66e6 | 6768 | o->op_next->op_targ = 0; |
2c2d71f5 | 6769 | o->op_private |= OPpTARGET_MY; |
b162f9ea IZ |
6770 | } |
6771 | } | |
a0d0e21e | 6772 | null(o->op_next); |
b162f9ea IZ |
6773 | } |
6774 | ignore_optimization: | |
3280af22 | 6775 | o->op_seq = PL_op_seqmax++; |
a0d0e21e | 6776 | break; |
8990e307 | 6777 | case OP_STUB: |
54310121 | 6778 | if ((o->op_flags & OPf_WANT) != OPf_WANT_LIST) { |
3280af22 | 6779 | o->op_seq = PL_op_seqmax++; |
54310121 | 6780 | break; /* Scalar stub must produce undef. List stub is noop */ |
8990e307 | 6781 | } |
748a9306 | 6782 | goto nothin; |
79072805 | 6783 | case OP_NULL: |
acb36ea4 GS |
6784 | if (o->op_targ == OP_NEXTSTATE |
6785 | || o->op_targ == OP_DBSTATE | |
6786 | || o->op_targ == OP_SETSTATE) | |
6787 | { | |
3280af22 | 6788 | PL_curcop = ((COP*)o); |
acb36ea4 | 6789 | } |
748a9306 | 6790 | goto nothin; |
79072805 | 6791 | case OP_SCALAR: |
93a17b20 | 6792 | case OP_LINESEQ: |
463ee0b2 | 6793 | case OP_SCOPE: |
748a9306 | 6794 | nothin: |
a0d0e21e LW |
6795 | if (oldop && o->op_next) { |
6796 | oldop->op_next = o->op_next; | |
79072805 LW |
6797 | continue; |
6798 | } | |
3280af22 | 6799 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
6800 | break; |
6801 | ||
6802 | case OP_GV: | |
a0d0e21e | 6803 | if (o->op_next->op_type == OP_RV2SV) { |
64aac5a9 | 6804 | if (!(o->op_next->op_private & OPpDEREF)) { |
ef8040b0 | 6805 | null(o->op_next); |
64aac5a9 GS |
6806 | o->op_private |= o->op_next->op_private & (OPpLVAL_INTRO |
6807 | | OPpOUR_INTRO); | |
a0d0e21e LW |
6808 | o->op_next = o->op_next->op_next; |
6809 | o->op_type = OP_GVSV; | |
22c35a8c | 6810 | o->op_ppaddr = PL_ppaddr[OP_GVSV]; |
8990e307 LW |
6811 | } |
6812 | } | |
a0d0e21e LW |
6813 | else if (o->op_next->op_type == OP_RV2AV) { |
6814 | OP* pop = o->op_next->op_next; | |
6815 | IV i; | |
8990e307 | 6816 | if (pop->op_type == OP_CONST && |
533c011a | 6817 | (PL_op = pop->op_next) && |
8990e307 | 6818 | pop->op_next->op_type == OP_AELEM && |
a0d0e21e | 6819 | !(pop->op_next->op_private & |
78f9721b | 6820 | (OPpLVAL_INTRO|OPpLVAL_DEFER|OPpDEREF|OPpMAYBE_LVSUB)) && |
b0840a2a | 6821 | (i = SvIV(((SVOP*)pop)->op_sv) - PL_curcop->cop_arybase) |
a0d0e21e | 6822 | <= 255 && |
8990e307 LW |
6823 | i >= 0) |
6824 | { | |
350de78d | 6825 | GV *gv; |
a0d0e21e | 6826 | null(o->op_next); |
8990e307 LW |
6827 | null(pop->op_next); |
6828 | null(pop); | |
a0d0e21e LW |
6829 | o->op_flags |= pop->op_next->op_flags & OPf_MOD; |
6830 | o->op_next = pop->op_next->op_next; | |
6831 | o->op_type = OP_AELEMFAST; | |
22c35a8c | 6832 | o->op_ppaddr = PL_ppaddr[OP_AELEMFAST]; |
a0d0e21e | 6833 | o->op_private = (U8)i; |
638eceb6 | 6834 | gv = cGVOPo_gv; |
350de78d | 6835 | GvAVn(gv); |
8990e307 | 6836 | } |
79072805 | 6837 | } |
e476b1b5 | 6838 | else if ((o->op_private & OPpEARLY_CV) && ckWARN(WARN_PROTOTYPE)) { |
638eceb6 | 6839 | GV *gv = cGVOPo_gv; |
76cd736e GS |
6840 | if (SvTYPE(gv) == SVt_PVGV && GvCV(gv) && SvPVX(GvCV(gv))) { |
6841 | /* XXX could check prototype here instead of just carping */ | |
6842 | SV *sv = sv_newmortal(); | |
6843 | gv_efullname3(sv, gv, Nullch); | |
e476b1b5 | 6844 | Perl_warner(aTHX_ WARN_PROTOTYPE, |
76cd736e GS |
6845 | "%s() called too early to check prototype", |
6846 | SvPV_nolen(sv)); | |
6847 | } | |
6848 | } | |
6849 | ||
3280af22 | 6850 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
6851 | break; |
6852 | ||
a0d0e21e | 6853 | case OP_MAPWHILE: |
79072805 LW |
6854 | case OP_GREPWHILE: |
6855 | case OP_AND: | |
6856 | case OP_OR: | |
2c2d71f5 JH |
6857 | case OP_ANDASSIGN: |
6858 | case OP_ORASSIGN: | |
1a67a97c SM |
6859 | case OP_COND_EXPR: |
6860 | case OP_RANGE: | |
3280af22 | 6861 | o->op_seq = PL_op_seqmax++; |
fd4d1407 IZ |
6862 | while (cLOGOP->op_other->op_type == OP_NULL) |
6863 | cLOGOP->op_other = cLOGOP->op_other->op_next; | |
79072805 LW |
6864 | peep(cLOGOP->op_other); |
6865 | break; | |
6866 | ||
79072805 | 6867 | case OP_ENTERLOOP: |
9c2ca71a | 6868 | case OP_ENTERITER: |
3280af22 | 6869 | o->op_seq = PL_op_seqmax++; |
58cccf98 SM |
6870 | while (cLOOP->op_redoop->op_type == OP_NULL) |
6871 | cLOOP->op_redoop = cLOOP->op_redoop->op_next; | |
79072805 | 6872 | peep(cLOOP->op_redoop); |
58cccf98 SM |
6873 | while (cLOOP->op_nextop->op_type == OP_NULL) |
6874 | cLOOP->op_nextop = cLOOP->op_nextop->op_next; | |
79072805 | 6875 | peep(cLOOP->op_nextop); |
58cccf98 SM |
6876 | while (cLOOP->op_lastop->op_type == OP_NULL) |
6877 | cLOOP->op_lastop = cLOOP->op_lastop->op_next; | |
79072805 LW |
6878 | peep(cLOOP->op_lastop); |
6879 | break; | |
6880 | ||
8782bef2 | 6881 | case OP_QR: |
79072805 LW |
6882 | case OP_MATCH: |
6883 | case OP_SUBST: | |
3280af22 | 6884 | o->op_seq = PL_op_seqmax++; |
9041c2e3 | 6885 | while (cPMOP->op_pmreplstart && |
58cccf98 SM |
6886 | cPMOP->op_pmreplstart->op_type == OP_NULL) |
6887 | cPMOP->op_pmreplstart = cPMOP->op_pmreplstart->op_next; | |
a0d0e21e | 6888 | peep(cPMOP->op_pmreplstart); |
79072805 LW |
6889 | break; |
6890 | ||
a0d0e21e | 6891 | case OP_EXEC: |
3280af22 | 6892 | o->op_seq = PL_op_seqmax++; |
1c846c1f | 6893 | if (ckWARN(WARN_SYNTAX) && o->op_next |
599cee73 | 6894 | && o->op_next->op_type == OP_NEXTSTATE) { |
a0d0e21e | 6895 | if (o->op_next->op_sibling && |
20408e3c GS |
6896 | o->op_next->op_sibling->op_type != OP_EXIT && |
6897 | o->op_next->op_sibling->op_type != OP_WARN && | |
a0d0e21e | 6898 | o->op_next->op_sibling->op_type != OP_DIE) { |
57843af0 | 6899 | line_t oldline = CopLINE(PL_curcop); |
a0d0e21e | 6900 | |
57843af0 | 6901 | CopLINE_set(PL_curcop, CopLINE((COP*)o->op_next)); |
eeb6a2c9 GS |
6902 | Perl_warner(aTHX_ WARN_EXEC, |
6903 | "Statement unlikely to be reached"); | |
6904 | Perl_warner(aTHX_ WARN_EXEC, | |
cc507455 | 6905 | "\t(Maybe you meant system() when you said exec()?)\n"); |
57843af0 | 6906 | CopLINE_set(PL_curcop, oldline); |
a0d0e21e LW |
6907 | } |
6908 | } | |
6909 | break; | |
aeea060c | 6910 | |
c750a3ec MB |
6911 | case OP_HELEM: { |
6912 | UNOP *rop; | |
6913 | SV *lexname; | |
6914 | GV **fields; | |
9615e741 | 6915 | SV **svp, **indsvp, *sv; |
c750a3ec | 6916 | I32 ind; |
1c846c1f | 6917 | char *key = NULL; |
c750a3ec | 6918 | STRLEN keylen; |
aeea060c | 6919 | |
9615e741 | 6920 | o->op_seq = PL_op_seqmax++; |
1c846c1f NIS |
6921 | |
6922 | if (((BINOP*)o)->op_last->op_type != OP_CONST) | |
c750a3ec | 6923 | break; |
1c846c1f NIS |
6924 | |
6925 | /* Make the CONST have a shared SV */ | |
6926 | svp = cSVOPx_svp(((BINOP*)o)->op_last); | |
3049cdab | 6927 | if ((!SvFAKE(sv = *svp) || !SvREADONLY(sv)) && !IS_PADCONST(sv)) { |
1c846c1f | 6928 | key = SvPV(sv, keylen); |
8fed10cd | 6929 | if (SvUTF8(sv)) |
c3654f1a IH |
6930 | keylen = -keylen; |
6931 | lexname = newSVpvn_share(key, keylen, 0); | |
1c846c1f NIS |
6932 | SvREFCNT_dec(sv); |
6933 | *svp = lexname; | |
6934 | } | |
6935 | ||
6936 | if ((o->op_private & (OPpLVAL_INTRO))) | |
6937 | break; | |
6938 | ||
c750a3ec MB |
6939 | rop = (UNOP*)((BINOP*)o)->op_first; |
6940 | if (rop->op_type != OP_RV2HV || rop->op_first->op_type != OP_PADSV) | |
6941 | break; | |
3280af22 | 6942 | lexname = *av_fetch(PL_comppad_name, rop->op_first->op_targ, TRUE); |
c750a3ec MB |
6943 | if (!SvOBJECT(lexname)) |
6944 | break; | |
5196be3e | 6945 | fields = (GV**)hv_fetch(SvSTASH(lexname), "FIELDS", 6, FALSE); |
c750a3ec MB |
6946 | if (!fields || !GvHV(*fields)) |
6947 | break; | |
c750a3ec | 6948 | key = SvPV(*svp, keylen); |
1aa99e6b IH |
6949 | if (SvUTF8(*svp)) |
6950 | keylen = -keylen; | |
c750a3ec MB |
6951 | indsvp = hv_fetch(GvHV(*fields), key, keylen, FALSE); |
6952 | if (!indsvp) { | |
88e9b055 | 6953 | Perl_croak(aTHX_ "No such pseudo-hash field \"%s\" in variable %s of type %s", |
2d8e6c8d | 6954 | key, SvPV(lexname, n_a), HvNAME(SvSTASH(lexname))); |
c750a3ec MB |
6955 | } |
6956 | ind = SvIV(*indsvp); | |
6957 | if (ind < 1) | |
cea2e8a9 | 6958 | Perl_croak(aTHX_ "Bad index while coercing array into hash"); |
c750a3ec | 6959 | rop->op_type = OP_RV2AV; |
22c35a8c | 6960 | rop->op_ppaddr = PL_ppaddr[OP_RV2AV]; |
c750a3ec | 6961 | o->op_type = OP_AELEM; |
22c35a8c | 6962 | o->op_ppaddr = PL_ppaddr[OP_AELEM]; |
9615e741 GS |
6963 | sv = newSViv(ind); |
6964 | if (SvREADONLY(*svp)) | |
6965 | SvREADONLY_on(sv); | |
6966 | SvFLAGS(sv) |= (SvFLAGS(*svp) | |
6967 | & (SVs_PADBUSY|SVs_PADTMP|SVs_PADMY)); | |
c750a3ec | 6968 | SvREFCNT_dec(*svp); |
9615e741 | 6969 | *svp = sv; |
c750a3ec MB |
6970 | break; |
6971 | } | |
345599ca GS |
6972 | |
6973 | case OP_HSLICE: { | |
6974 | UNOP *rop; | |
6975 | SV *lexname; | |
6976 | GV **fields; | |
9615e741 | 6977 | SV **svp, **indsvp, *sv; |
345599ca GS |
6978 | I32 ind; |
6979 | char *key; | |
6980 | STRLEN keylen; | |
6981 | SVOP *first_key_op, *key_op; | |
9615e741 GS |
6982 | |
6983 | o->op_seq = PL_op_seqmax++; | |
345599ca GS |
6984 | if ((o->op_private & (OPpLVAL_INTRO)) |
6985 | /* I bet there's always a pushmark... */ | |
6986 | || ((LISTOP*)o)->op_first->op_sibling->op_type != OP_LIST) | |
6987 | /* hmmm, no optimization if list contains only one key. */ | |
6988 | break; | |
6989 | rop = (UNOP*)((LISTOP*)o)->op_last; | |
6990 | if (rop->op_type != OP_RV2HV || rop->op_first->op_type != OP_PADSV) | |
6991 | break; | |
6992 | lexname = *av_fetch(PL_comppad_name, rop->op_first->op_targ, TRUE); | |
6993 | if (!SvOBJECT(lexname)) | |
6994 | break; | |
6995 | fields = (GV**)hv_fetch(SvSTASH(lexname), "FIELDS", 6, FALSE); | |
6996 | if (!fields || !GvHV(*fields)) | |
6997 | break; | |
6998 | /* Again guessing that the pushmark can be jumped over.... */ | |
6999 | first_key_op = (SVOP*)((LISTOP*)((LISTOP*)o)->op_first->op_sibling) | |
7000 | ->op_first->op_sibling; | |
7001 | /* Check that the key list contains only constants. */ | |
7002 | for (key_op = first_key_op; key_op; | |
7003 | key_op = (SVOP*)key_op->op_sibling) | |
7004 | if (key_op->op_type != OP_CONST) | |
7005 | break; | |
7006 | if (key_op) | |
7007 | break; | |
7008 | rop->op_type = OP_RV2AV; | |
7009 | rop->op_ppaddr = PL_ppaddr[OP_RV2AV]; | |
7010 | o->op_type = OP_ASLICE; | |
7011 | o->op_ppaddr = PL_ppaddr[OP_ASLICE]; | |
7012 | for (key_op = first_key_op; key_op; | |
7013 | key_op = (SVOP*)key_op->op_sibling) { | |
7014 | svp = cSVOPx_svp(key_op); | |
7015 | key = SvPV(*svp, keylen); | |
1aa99e6b IH |
7016 | if (SvUTF8(*svp)) |
7017 | keylen = -keylen; | |
345599ca GS |
7018 | indsvp = hv_fetch(GvHV(*fields), key, keylen, FALSE); |
7019 | if (!indsvp) { | |
9615e741 GS |
7020 | Perl_croak(aTHX_ "No such pseudo-hash field \"%s\" " |
7021 | "in variable %s of type %s", | |
345599ca GS |
7022 | key, SvPV(lexname, n_a), HvNAME(SvSTASH(lexname))); |
7023 | } | |
7024 | ind = SvIV(*indsvp); | |
7025 | if (ind < 1) | |
7026 | Perl_croak(aTHX_ "Bad index while coercing array into hash"); | |
9615e741 GS |
7027 | sv = newSViv(ind); |
7028 | if (SvREADONLY(*svp)) | |
7029 | SvREADONLY_on(sv); | |
7030 | SvFLAGS(sv) |= (SvFLAGS(*svp) | |
7031 | & (SVs_PADBUSY|SVs_PADTMP|SVs_PADMY)); | |
345599ca | 7032 | SvREFCNT_dec(*svp); |
9615e741 | 7033 | *svp = sv; |
345599ca GS |
7034 | } |
7035 | break; | |
7036 | } | |
c750a3ec | 7037 | |
79072805 | 7038 | default: |
3280af22 | 7039 | o->op_seq = PL_op_seqmax++; |
79072805 LW |
7040 | break; |
7041 | } | |
a0d0e21e | 7042 | oldop = o; |
79072805 | 7043 | } |
a0d0e21e | 7044 | LEAVE; |
79072805 | 7045 | } |
beab0874 JT |
7046 | |
7047 | #include "XSUB.h" | |
7048 | ||
7049 | /* Efficient sub that returns a constant scalar value. */ | |
7050 | static void | |
7051 | const_sv_xsub(pTHXo_ CV* cv) | |
7052 | { | |
7053 | dXSARGS; | |
9cbac4c7 DM |
7054 | if (items != 0) { |
7055 | #if 0 | |
7056 | Perl_croak(aTHX_ "usage: %s::%s()", | |
7057 | HvNAME(GvSTASH(CvGV(cv))), GvNAME(CvGV(cv))); | |
7058 | #endif | |
7059 | } | |
9a049f1c | 7060 | EXTEND(sp, 1); |
0768512c | 7061 | ST(0) = (SV*)XSANY.any_ptr; |
beab0874 JT |
7062 | XSRETURN(1); |
7063 | } | |
2b9d42f0 | 7064 |