Commit | Line | Data |
---|---|---|
a0d0e21e LW |
1 | /* pp_ctl.c |
2 | * | |
1129b882 NC |
3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
4 | * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others | |
a0d0e21e LW |
5 | * |
6 | * You may distribute under the terms of either the GNU General Public | |
7 | * License or the Artistic License, as specified in the README file. | |
8 | * | |
9 | */ | |
10 | ||
11 | /* | |
4ac71550 TC |
12 | * Now far ahead the Road has gone, |
13 | * And I must follow, if I can, | |
14 | * Pursuing it with eager feet, | |
15 | * Until it joins some larger way | |
16 | * Where many paths and errands meet. | |
17 | * And whither then? I cannot say. | |
18 | * | |
19 | * [Bilbo on p.35 of _The Lord of the Rings_, I/i: "A Long-Expected Party"] | |
a0d0e21e LW |
20 | */ |
21 | ||
166f8a29 DM |
22 | /* This file contains control-oriented pp ("push/pop") functions that |
23 | * execute the opcodes that make up a perl program. A typical pp function | |
24 | * expects to find its arguments on the stack, and usually pushes its | |
25 | * results onto the stack, hence the 'pp' terminology. Each OP structure | |
26 | * contains a pointer to the relevant pp_foo() function. | |
27 | * | |
28 | * Control-oriented means things like pp_enteriter() and pp_next(), which | |
29 | * alter the flow of control of the program. | |
30 | */ | |
31 | ||
32 | ||
a0d0e21e | 33 | #include "EXTERN.h" |
864dbfa3 | 34 | #define PERL_IN_PP_CTL_C |
a0d0e21e LW |
35 | #include "perl.h" |
36 | ||
54310121 | 37 | #define DOCATCH(o) ((CATCH_GET == TRUE) ? docatch(o) : (o)) |
1e422769 | 38 | |
94fcd414 NC |
39 | #define dopoptosub(plop) dopoptosub_at(cxstack, (plop)) |
40 | ||
a0d0e21e LW |
41 | PP(pp_wantarray) |
42 | { | |
97aff369 | 43 | dVAR; |
39644a26 | 44 | dSP; |
a0d0e21e | 45 | I32 cxix; |
93f0bc49 | 46 | const PERL_CONTEXT *cx; |
a0d0e21e LW |
47 | EXTEND(SP, 1); |
48 | ||
93f0bc49 FC |
49 | if (PL_op->op_private & OPpOFFBYONE) { |
50 | if (!(cx = caller_cx(1,NULL))) RETPUSHUNDEF; | |
51 | } | |
52 | else { | |
53 | cxix = dopoptosub(cxstack_ix); | |
54 | if (cxix < 0) | |
a0d0e21e | 55 | RETPUSHUNDEF; |
93f0bc49 FC |
56 | cx = &cxstack[cxix]; |
57 | } | |
a0d0e21e | 58 | |
93f0bc49 | 59 | switch (cx->blk_gimme) { |
54310121 | 60 | case G_ARRAY: |
a0d0e21e | 61 | RETPUSHYES; |
54310121 | 62 | case G_SCALAR: |
a0d0e21e | 63 | RETPUSHNO; |
54310121 | 64 | default: |
65 | RETPUSHUNDEF; | |
66 | } | |
a0d0e21e LW |
67 | } |
68 | ||
2cd61cdb IZ |
69 | PP(pp_regcreset) |
70 | { | |
97aff369 | 71 | dVAR; |
2cd61cdb IZ |
72 | /* XXXX Should store the old value to allow for tie/overload - and |
73 | restore in regcomp, where marked with XXXX. */ | |
3280af22 | 74 | PL_reginterp_cnt = 0; |
0b4182de | 75 | TAINT_NOT; |
2cd61cdb IZ |
76 | return NORMAL; |
77 | } | |
78 | ||
b3eb6a9b GS |
79 | PP(pp_regcomp) |
80 | { | |
97aff369 | 81 | dVAR; |
39644a26 | 82 | dSP; |
a0d0e21e | 83 | register PMOP *pm = (PMOP*)cLOGOP->op_other; |
a0d0e21e | 84 | SV *tmpstr; |
84679df5 | 85 | REGEXP *re = NULL; |
bfed75c6 | 86 | |
4b5a0d1c | 87 | /* prevent recompiling under /o and ithreads. */ |
3db8f154 | 88 | #if defined(USE_ITHREADS) |
131b3ad0 DM |
89 | if (pm->op_pmflags & PMf_KEEP && PM_GETRE(pm)) { |
90 | if (PL_op->op_flags & OPf_STACKED) { | |
91 | dMARK; | |
92 | SP = MARK; | |
93 | } | |
94 | else | |
95 | (void)POPs; | |
96 | RETURN; | |
97 | } | |
513629ba | 98 | #endif |
d4b87e75 BM |
99 | |
100 | #define tryAMAGICregexp(rx) \ | |
101 | STMT_START { \ | |
6f1401dc | 102 | SvGETMAGIC(rx); \ |
d4b87e75 | 103 | if (SvROK(rx) && SvAMAGIC(rx)) { \ |
31d632c3 | 104 | SV *sv = AMG_CALLunary(rx, regexp_amg); \ |
d4b87e75 BM |
105 | if (sv) { \ |
106 | if (SvROK(sv)) \ | |
107 | sv = SvRV(sv); \ | |
108 | if (SvTYPE(sv) != SVt_REGEXP) \ | |
109 | Perl_croak(aTHX_ "Overloaded qr did not return a REGEXP"); \ | |
110 | rx = sv; \ | |
111 | } \ | |
112 | } \ | |
113 | } STMT_END | |
114 | ||
115 | ||
131b3ad0 | 116 | if (PL_op->op_flags & OPf_STACKED) { |
486ec47a | 117 | /* multiple args; concatenate them */ |
131b3ad0 DM |
118 | dMARK; dORIGMARK; |
119 | tmpstr = PAD_SV(ARGTARG); | |
76f68e9b | 120 | sv_setpvs(tmpstr, ""); |
131b3ad0 | 121 | while (++MARK <= SP) { |
d4b87e75 | 122 | SV *msv = *MARK; |
79a8d529 | 123 | SV *sv; |
d4b87e75 | 124 | |
79a8d529 | 125 | tryAMAGICregexp(msv); |
d4b87e75 | 126 | |
79a8d529 DM |
127 | if ((SvAMAGIC(tmpstr) || SvAMAGIC(msv)) && |
128 | (sv = amagic_call(tmpstr, msv, concat_amg, AMGf_assign))) | |
129 | { | |
130 | sv_setsv(tmpstr, sv); | |
131 | continue; | |
131b3ad0 | 132 | } |
37c07a4b FC |
133 | |
134 | if (SvROK(msv) && SvTYPE(SvRV(msv)) == SVt_REGEXP) { | |
135 | msv = SvRV(msv); | |
136 | PL_reginterp_cnt += | |
137 | RX_SEEN_EVALS((REGEXP *)MUTABLE_PTR(msv)); | |
138 | } | |
139 | ||
a9984b10 | 140 | sv_catsv_nomg(tmpstr, msv); |
131b3ad0 DM |
141 | } |
142 | SvSETMAGIC(tmpstr); | |
143 | SP = ORIGMARK; | |
144 | } | |
d4b87e75 | 145 | else { |
131b3ad0 | 146 | tmpstr = POPs; |
d4b87e75 BM |
147 | tryAMAGICregexp(tmpstr); |
148 | } | |
149 | ||
150 | #undef tryAMAGICregexp | |
513629ba | 151 | |
b3eb6a9b | 152 | if (SvROK(tmpstr)) { |
d8f6592e | 153 | SV * const sv = SvRV(tmpstr); |
5c35adbb | 154 | if (SvTYPE(sv) == SVt_REGEXP) |
d2f13c59 | 155 | re = (REGEXP*) sv; |
c277df42 | 156 | } |
d4b87e75 BM |
157 | else if (SvTYPE(tmpstr) == SVt_REGEXP) |
158 | re = (REGEXP*) tmpstr; | |
159 | ||
5c35adbb | 160 | if (re) { |
69dc4b30 FC |
161 | /* The match's LHS's get-magic might need to access this op's reg- |
162 | exp (as is sometimes the case with $'; see bug 70764). So we | |
163 | must call get-magic now before we replace the regexp. Hopeful- | |
164 | ly this hack can be replaced with the approach described at | |
165 | http://www.nntp.perl.org/group/perl.perl5.porters/2007/03 | |
166 | /msg122415.html some day. */ | |
455d9033 FC |
167 | if(pm->op_type == OP_MATCH) { |
168 | SV *lhs; | |
169 | const bool was_tainted = PL_tainted; | |
170 | if (pm->op_flags & OPf_STACKED) | |
69dc4b30 | 171 | lhs = TOPs; |
455d9033 FC |
172 | else if (pm->op_private & OPpTARGET_MY) |
173 | lhs = PAD_SV(pm->op_targ); | |
174 | else lhs = DEFSV; | |
175 | SvGETMAGIC(lhs); | |
176 | /* Restore the previous value of PL_tainted (which may have been | |
177 | modified by get-magic), to avoid incorrectly setting the | |
178 | RXf_TAINTED flag further down. */ | |
179 | PL_tainted = was_tainted; | |
180 | } | |
69dc4b30 | 181 | |
f0826785 | 182 | re = reg_temp_copy(NULL, re); |
aaa362c4 | 183 | ReREFCNT_dec(PM_GETRE(pm)); |
28d8d7f4 | 184 | PM_SETRE(pm, re); |
c277df42 IZ |
185 | } |
186 | else { | |
f3ec07c7 DM |
187 | STRLEN len = 0; |
188 | const char *t = SvOK(tmpstr) ? SvPV_nomg_const(tmpstr, len) : ""; | |
189 | ||
c737faaf | 190 | re = PM_GETRE(pm); |
14a49a24 | 191 | assert (re != (REGEXP*) &PL_sv_undef); |
c277df42 | 192 | |
20408e3c | 193 | /* Check against the last compiled regexp. */ |
a11c8683 | 194 | if (!re || !RX_PRECOMP(re) || RX_PRELEN(re) != len || |
220fc49f | 195 | memNE(RX_PRECOMP(re), t, len)) |
85aff577 | 196 | { |
07bc277f | 197 | const regexp_engine *eng = re ? RX_ENGINE(re) : NULL; |
73134a2e | 198 | U32 pm_flags = pm->op_pmflags & RXf_PMf_COMPILETIME; |
d8f6592e AL |
199 | if (re) { |
200 | ReREFCNT_dec(re); | |
14a49a24 NC |
201 | #ifdef USE_ITHREADS |
202 | PM_SETRE(pm, (REGEXP*) &PL_sv_undef); | |
203 | #else | |
4608196e | 204 | PM_SETRE(pm, NULL); /* crucial if regcomp aborts */ |
14a49a24 | 205 | #endif |
1e2e3d02 | 206 | } else if (PL_curcop->cop_hints_hash) { |
20439bc7 | 207 | SV *ptr = cop_hints_fetch_pvs(PL_curcop, "regcomp", 0); |
1e2e3d02 YO |
208 | if (ptr && SvIOK(ptr) && SvIV(ptr)) |
209 | eng = INT2PTR(regexp_engine*,SvIV(ptr)); | |
c277df42 | 210 | } |
664e119d | 211 | |
533c011a | 212 | if (PL_op->op_flags & OPf_SPECIAL) |
3280af22 | 213 | PL_reginterp_cnt = I32_MAX; /* Mark as safe. */ |
a0d0e21e | 214 | |
15d9c083 | 215 | if (!DO_UTF8(tmpstr) && SvUTF8(tmpstr)) { |
b9ad30b4 NC |
216 | /* Not doing UTF-8, despite what the SV says. Is this only if |
217 | we're trapped in use 'bytes'? */ | |
218 | /* Make a copy of the octet sequence, but without the flag on, | |
219 | as the compiler now honours the SvUTF8 flag on tmpstr. */ | |
220 | STRLEN len; | |
221 | const char *const p = SvPV(tmpstr, len); | |
222 | tmpstr = newSVpvn_flags(p, len, SVs_TEMP); | |
223 | } | |
3e102237 | 224 | else if (SvAMAGIC(tmpstr) || SvGMAGICAL(tmpstr)) { |
f3ec07c7 | 225 | /* make a copy to avoid extra stringifies */ |
0479a84a | 226 | tmpstr = newSVpvn_flags(t, len, SVs_TEMP | SvUTF8(tmpstr)); |
f3ec07c7 | 227 | } |
c737faaf | 228 | |
5a8697a7 | 229 | if (eng) |
3ab4a224 | 230 | PM_SETRE(pm, CALLREGCOMP_ENG(eng, tmpstr, pm_flags)); |
5a8697a7 | 231 | else |
3ab4a224 | 232 | PM_SETRE(pm, CALLREGCOMP(tmpstr, pm_flags)); |
c737faaf | 233 | |
f86aaa29 | 234 | PL_reginterp_cnt = 0; /* XXXX Be extra paranoid - needed |
2cd61cdb | 235 | inside tie/overload accessors. */ |
c277df42 | 236 | } |
4633a7c4 | 237 | } |
c737faaf YO |
238 | |
239 | re = PM_GETRE(pm); | |
a0d0e21e | 240 | |
72311751 | 241 | #ifndef INCOMPLETE_TAINTS |
3280af22 | 242 | if (PL_tainting) { |
9274aefd DM |
243 | if (PL_tainted) { |
244 | SvTAINTED_on((SV*)re); | |
07bc277f | 245 | RX_EXTFLAGS(re) |= RXf_TAINTED; |
9274aefd | 246 | } |
72311751 GS |
247 | } |
248 | #endif | |
249 | ||
220fc49f | 250 | if (!RX_PRELEN(PM_GETRE(pm)) && PL_curpm) |
3280af22 | 251 | pm = PL_curpm; |
a0d0e21e | 252 | |
c737faaf YO |
253 | |
254 | #if !defined(USE_ITHREADS) | |
255 | /* can't change the optree at runtime either */ | |
256 | /* PMf_KEEP is handled differently under threads to avoid these problems */ | |
a0d0e21e | 257 | if (pm->op_pmflags & PMf_KEEP) { |
c90c0ff4 | 258 | pm->op_private &= ~OPpRUNTIME; /* no point compiling again */ |
533c011a | 259 | cLOGOP->op_first->op_next = PL_op->op_next; |
a0d0e21e | 260 | } |
c737faaf | 261 | #endif |
a0d0e21e LW |
262 | RETURN; |
263 | } | |
264 | ||
265 | PP(pp_substcont) | |
266 | { | |
97aff369 | 267 | dVAR; |
39644a26 | 268 | dSP; |
c09156bb | 269 | register PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
901017d6 AL |
270 | register PMOP * const pm = (PMOP*) cLOGOP->op_other; |
271 | register SV * const dstr = cx->sb_dstr; | |
a0d0e21e LW |
272 | register char *s = cx->sb_s; |
273 | register char *m = cx->sb_m; | |
274 | char *orig = cx->sb_orig; | |
901017d6 | 275 | register REGEXP * const rx = cx->sb_rx; |
c445ea15 | 276 | SV *nsv = NULL; |
988e6e7e | 277 | REGEXP *old = PM_GETRE(pm); |
f410a211 NC |
278 | |
279 | PERL_ASYNC_CHECK(); | |
280 | ||
988e6e7e | 281 | if(old != rx) { |
bfed75c6 | 282 | if(old) |
988e6e7e | 283 | ReREFCNT_dec(old); |
d6106309 | 284 | PM_SETRE(pm,ReREFCNT_inc(rx)); |
d8f2cf8a AB |
285 | } |
286 | ||
d9f97599 | 287 | rxres_restore(&cx->sb_rxres, rx); |
01b35787 | 288 | RX_MATCH_UTF8_set(rx, DO_UTF8(cx->sb_targ)); |
c90c0ff4 | 289 | |
a0d0e21e | 290 | if (cx->sb_iters++) { |
a3b680e6 | 291 | const I32 saviters = cx->sb_iters; |
a0d0e21e | 292 | if (cx->sb_iters > cx->sb_maxiters) |
cea2e8a9 | 293 | DIE(aTHX_ "Substitution loop"); |
a0d0e21e | 294 | |
447ee134 DM |
295 | SvGETMAGIC(TOPs); /* possibly clear taint on $1 etc: #67962 */ |
296 | ||
ef07e810 | 297 | /* See "how taint works" above pp_subst() */ |
20be6587 DM |
298 | if (SvTAINTED(TOPs)) |
299 | cx->sb_rxtainted |= SUBST_TAINT_REPL; | |
447ee134 | 300 | sv_catsv_nomg(dstr, POPs); |
2c296965 YO |
301 | /* XXX: adjust for positive offsets of \G for instance s/(.)\G//g with positive pos() */ |
302 | s -= RX_GOFS(rx); | |
a0d0e21e LW |
303 | |
304 | /* Are we done */ | |
134b8cd8 NC |
305 | /* I believe that we can't set REXEC_SCREAM here if |
306 | SvSCREAM(cx->sb_targ) is true because SvPVX(cx->sb_targ) isn't always | |
307 | equal to s. [See the comment before Perl_re_intuit_start(), which is | |
308 | called from Perl_regexec_flags(), which says that it should be when | |
309 | SvSCREAM() is true.] s, cx->sb_strend and orig will be consistent | |
310 | with SvPVX(cx->sb_targ), as substconst doesn't modify cx->sb_targ | |
311 | during the match. */ | |
2c296965 YO |
312 | if (CxONCE(cx) || s < orig || |
313 | !CALLREGEXEC(rx, s, cx->sb_strend, orig, | |
314 | (s == m) + RX_GOFS(rx), cx->sb_targ, NULL, | |
315 | ((cx->sb_rflags & REXEC_COPY_STR) | |
316 | ? (REXEC_IGNOREPOS|REXEC_NOT_FIRST) | |
317 | : (REXEC_COPY_STR|REXEC_IGNOREPOS|REXEC_NOT_FIRST)))) | |
a0d0e21e | 318 | { |
8ca8a454 | 319 | SV *targ = cx->sb_targ; |
748a9306 | 320 | |
078c425b JH |
321 | assert(cx->sb_strend >= s); |
322 | if(cx->sb_strend > s) { | |
323 | if (DO_UTF8(dstr) && !SvUTF8(targ)) | |
324 | sv_catpvn_utf8_upgrade(dstr, s, cx->sb_strend - s, nsv); | |
325 | else | |
326 | sv_catpvn(dstr, s, cx->sb_strend - s); | |
327 | } | |
20be6587 DM |
328 | if (RX_MATCH_TAINTED(rx)) /* run time pattern taint, eg locale */ |
329 | cx->sb_rxtainted |= SUBST_TAINT_PAT; | |
9212bbba | 330 | |
8ca8a454 NC |
331 | if (pm->op_pmflags & PMf_NONDESTRUCT) { |
332 | PUSHs(dstr); | |
333 | /* From here on down we're using the copy, and leaving the | |
334 | original untouched. */ | |
335 | targ = dstr; | |
336 | } | |
337 | else { | |
8ca8a454 NC |
338 | if (SvIsCOW(targ)) { |
339 | sv_force_normal_flags(targ, SV_COW_DROP_PV); | |
340 | } else | |
8ca8a454 NC |
341 | { |
342 | SvPV_free(targ); | |
343 | } | |
344 | SvPV_set(targ, SvPVX(dstr)); | |
345 | SvCUR_set(targ, SvCUR(dstr)); | |
346 | SvLEN_set(targ, SvLEN(dstr)); | |
347 | if (DO_UTF8(dstr)) | |
348 | SvUTF8_on(targ); | |
349 | SvPV_set(dstr, NULL); | |
350 | ||
4f4d7508 | 351 | mPUSHi(saviters - 1); |
48c036b1 | 352 | |
8ca8a454 NC |
353 | (void)SvPOK_only_UTF8(targ); |
354 | } | |
5cd24f17 | 355 | |
20be6587 | 356 | /* update the taint state of various various variables in |
ef07e810 DM |
357 | * preparation for final exit. |
358 | * See "how taint works" above pp_subst() */ | |
20be6587 DM |
359 | if (PL_tainting) { |
360 | if ((cx->sb_rxtainted & SUBST_TAINT_PAT) || | |
361 | ((cx->sb_rxtainted & (SUBST_TAINT_STR|SUBST_TAINT_RETAINT)) | |
362 | == (SUBST_TAINT_STR|SUBST_TAINT_RETAINT)) | |
363 | ) | |
364 | (RX_MATCH_TAINTED_on(rx)); /* taint $1 et al */ | |
365 | ||
366 | if (!(cx->sb_rxtainted & SUBST_TAINT_BOOLRET) | |
367 | && (cx->sb_rxtainted & (SUBST_TAINT_STR|SUBST_TAINT_PAT)) | |
368 | ) | |
369 | SvTAINTED_on(TOPs); /* taint return value */ | |
370 | /* needed for mg_set below */ | |
371 | PL_tainted = cBOOL(cx->sb_rxtainted & | |
372 | (SUBST_TAINT_STR|SUBST_TAINT_PAT|SUBST_TAINT_REPL)); | |
373 | SvTAINT(TARG); | |
374 | } | |
375 | /* PL_tainted must be correctly set for this mg_set */ | |
376 | SvSETMAGIC(TARG); | |
377 | TAINT_NOT; | |
4633a7c4 | 378 | LEAVE_SCOPE(cx->sb_oldsave); |
a0d0e21e LW |
379 | POPSUBST(cx); |
380 | RETURNOP(pm->op_next); | |
20be6587 | 381 | /* NOTREACHED */ |
a0d0e21e | 382 | } |
8e5e9ebe | 383 | cx->sb_iters = saviters; |
a0d0e21e | 384 | } |
07bc277f | 385 | if (RX_MATCH_COPIED(rx) && RX_SUBBEG(rx) != orig) { |
a0d0e21e LW |
386 | m = s; |
387 | s = orig; | |
07bc277f | 388 | cx->sb_orig = orig = RX_SUBBEG(rx); |
a0d0e21e LW |
389 | s = orig + (m - s); |
390 | cx->sb_strend = s + (cx->sb_strend - m); | |
391 | } | |
07bc277f | 392 | cx->sb_m = m = RX_OFFS(rx)[0].start + orig; |
db79b45b | 393 | if (m > s) { |
bfed75c6 | 394 | if (DO_UTF8(dstr) && !SvUTF8(cx->sb_targ)) |
db79b45b JH |
395 | sv_catpvn_utf8_upgrade(dstr, s, m - s, nsv); |
396 | else | |
397 | sv_catpvn(dstr, s, m-s); | |
398 | } | |
07bc277f | 399 | cx->sb_s = RX_OFFS(rx)[0].end + orig; |
084916e3 | 400 | { /* Update the pos() information. */ |
8ca8a454 NC |
401 | SV * const sv |
402 | = (pm->op_pmflags & PMf_NONDESTRUCT) ? cx->sb_dstr : cx->sb_targ; | |
084916e3 | 403 | MAGIC *mg; |
7a7f3e45 | 404 | SvUPGRADE(sv, SVt_PVMG); |
14befaf4 | 405 | if (!(mg = mg_find(sv, PERL_MAGIC_regex_global))) { |
d83f0a82 | 406 | #ifdef PERL_OLD_COPY_ON_WRITE |
51a9ea20 | 407 | if (SvIsCOW(sv)) |
d83f0a82 NC |
408 | sv_force_normal_flags(sv, 0); |
409 | #endif | |
410 | mg = sv_magicext(sv, NULL, PERL_MAGIC_regex_global, &PL_vtbl_mglob, | |
411 | NULL, 0); | |
084916e3 | 412 | } |
ce474962 | 413 | mg->mg_len = m - orig; |
084916e3 | 414 | } |
988e6e7e | 415 | if (old != rx) |
d6106309 | 416 | (void)ReREFCNT_inc(rx); |
20be6587 | 417 | /* update the taint state of various various variables in preparation |
ef07e810 DM |
418 | * for calling the code block. |
419 | * See "how taint works" above pp_subst() */ | |
20be6587 DM |
420 | if (PL_tainting) { |
421 | if (RX_MATCH_TAINTED(rx)) /* run time pattern taint, eg locale */ | |
422 | cx->sb_rxtainted |= SUBST_TAINT_PAT; | |
423 | ||
424 | if ((cx->sb_rxtainted & SUBST_TAINT_PAT) || | |
425 | ((cx->sb_rxtainted & (SUBST_TAINT_STR|SUBST_TAINT_RETAINT)) | |
426 | == (SUBST_TAINT_STR|SUBST_TAINT_RETAINT)) | |
427 | ) | |
428 | (RX_MATCH_TAINTED_on(rx)); /* taint $1 et al */ | |
429 | ||
430 | if (cx->sb_iters > 1 && (cx->sb_rxtainted & | |
431 | (SUBST_TAINT_STR|SUBST_TAINT_PAT|SUBST_TAINT_REPL))) | |
8ca8a454 NC |
432 | SvTAINTED_on((pm->op_pmflags & PMf_NONDESTRUCT) |
433 | ? cx->sb_dstr : cx->sb_targ); | |
20be6587 DM |
434 | TAINT_NOT; |
435 | } | |
d9f97599 | 436 | rxres_save(&cx->sb_rxres, rx); |
af9838cc | 437 | PL_curpm = pm; |
29f2e912 | 438 | RETURNOP(pm->op_pmstashstartu.op_pmreplstart); |
a0d0e21e LW |
439 | } |
440 | ||
c90c0ff4 | 441 | void |
864dbfa3 | 442 | Perl_rxres_save(pTHX_ void **rsp, REGEXP *rx) |
c90c0ff4 | 443 | { |
444 | UV *p = (UV*)*rsp; | |
445 | U32 i; | |
7918f24d NC |
446 | |
447 | PERL_ARGS_ASSERT_RXRES_SAVE; | |
96a5add6 | 448 | PERL_UNUSED_CONTEXT; |
c90c0ff4 | 449 | |
07bc277f | 450 | if (!p || p[1] < RX_NPARENS(rx)) { |
f8c7b90f | 451 | #ifdef PERL_OLD_COPY_ON_WRITE |
07bc277f | 452 | i = 7 + RX_NPARENS(rx) * 2; |
ed252734 | 453 | #else |
07bc277f | 454 | i = 6 + RX_NPARENS(rx) * 2; |
ed252734 | 455 | #endif |
c90c0ff4 | 456 | if (!p) |
a02a5408 | 457 | Newx(p, i, UV); |
c90c0ff4 | 458 | else |
459 | Renew(p, i, UV); | |
460 | *rsp = (void*)p; | |
461 | } | |
462 | ||
07bc277f | 463 | *p++ = PTR2UV(RX_MATCH_COPIED(rx) ? RX_SUBBEG(rx) : NULL); |
cf93c79d | 464 | RX_MATCH_COPIED_off(rx); |
c90c0ff4 | 465 | |
f8c7b90f | 466 | #ifdef PERL_OLD_COPY_ON_WRITE |
bdd9a1b1 NC |
467 | *p++ = PTR2UV(RX_SAVED_COPY(rx)); |
468 | RX_SAVED_COPY(rx) = NULL; | |
ed252734 NC |
469 | #endif |
470 | ||
07bc277f | 471 | *p++ = RX_NPARENS(rx); |
c90c0ff4 | 472 | |
07bc277f NC |
473 | *p++ = PTR2UV(RX_SUBBEG(rx)); |
474 | *p++ = (UV)RX_SUBLEN(rx); | |
475 | for (i = 0; i <= RX_NPARENS(rx); ++i) { | |
476 | *p++ = (UV)RX_OFFS(rx)[i].start; | |
477 | *p++ = (UV)RX_OFFS(rx)[i].end; | |
c90c0ff4 | 478 | } |
479 | } | |
480 | ||
9c105995 NC |
481 | static void |
482 | S_rxres_restore(pTHX_ void **rsp, REGEXP *rx) | |
c90c0ff4 | 483 | { |
484 | UV *p = (UV*)*rsp; | |
485 | U32 i; | |
7918f24d NC |
486 | |
487 | PERL_ARGS_ASSERT_RXRES_RESTORE; | |
96a5add6 | 488 | PERL_UNUSED_CONTEXT; |
c90c0ff4 | 489 | |
ed252734 | 490 | RX_MATCH_COPY_FREE(rx); |
cf93c79d | 491 | RX_MATCH_COPIED_set(rx, *p); |
c90c0ff4 | 492 | *p++ = 0; |
493 | ||
f8c7b90f | 494 | #ifdef PERL_OLD_COPY_ON_WRITE |
bdd9a1b1 NC |
495 | if (RX_SAVED_COPY(rx)) |
496 | SvREFCNT_dec (RX_SAVED_COPY(rx)); | |
497 | RX_SAVED_COPY(rx) = INT2PTR(SV*,*p); | |
ed252734 NC |
498 | *p++ = 0; |
499 | #endif | |
500 | ||
07bc277f | 501 | RX_NPARENS(rx) = *p++; |
c90c0ff4 | 502 | |
07bc277f NC |
503 | RX_SUBBEG(rx) = INT2PTR(char*,*p++); |
504 | RX_SUBLEN(rx) = (I32)(*p++); | |
505 | for (i = 0; i <= RX_NPARENS(rx); ++i) { | |
506 | RX_OFFS(rx)[i].start = (I32)(*p++); | |
507 | RX_OFFS(rx)[i].end = (I32)(*p++); | |
c90c0ff4 | 508 | } |
509 | } | |
510 | ||
9c105995 NC |
511 | static void |
512 | S_rxres_free(pTHX_ void **rsp) | |
c90c0ff4 | 513 | { |
44f8325f | 514 | UV * const p = (UV*)*rsp; |
7918f24d NC |
515 | |
516 | PERL_ARGS_ASSERT_RXRES_FREE; | |
96a5add6 | 517 | PERL_UNUSED_CONTEXT; |
c90c0ff4 | 518 | |
519 | if (p) { | |
94010e71 NC |
520 | #ifdef PERL_POISON |
521 | void *tmp = INT2PTR(char*,*p); | |
522 | Safefree(tmp); | |
523 | if (*p) | |
7e337ee0 | 524 | PoisonFree(*p, 1, sizeof(*p)); |
94010e71 | 525 | #else |
56431972 | 526 | Safefree(INT2PTR(char*,*p)); |
94010e71 | 527 | #endif |
f8c7b90f | 528 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
529 | if (p[1]) { |
530 | SvREFCNT_dec (INT2PTR(SV*,p[1])); | |
531 | } | |
532 | #endif | |
c90c0ff4 | 533 | Safefree(p); |
4608196e | 534 | *rsp = NULL; |
c90c0ff4 | 535 | } |
536 | } | |
537 | ||
a701009a DM |
538 | #define FORM_NUM_BLANK (1<<30) |
539 | #define FORM_NUM_POINT (1<<29) | |
540 | ||
a0d0e21e LW |
541 | PP(pp_formline) |
542 | { | |
97aff369 | 543 | dVAR; dSP; dMARK; dORIGMARK; |
823a54a3 | 544 | register SV * const tmpForm = *++MARK; |
086b26f3 DM |
545 | SV *formsv; /* contains text of original format */ |
546 | register U32 *fpc; /* format ops program counter */ | |
547 | register char *t; /* current append position in target string */ | |
548 | const char *f; /* current position in format string */ | |
a0d0e21e | 549 | register I32 arg; |
086b26f3 DM |
550 | register SV *sv = NULL; /* current item */ |
551 | const char *item = NULL;/* string value of current item */ | |
552 | I32 itemsize = 0; /* length of current item, possibly truncated */ | |
553 | I32 fieldsize = 0; /* width of current field */ | |
554 | I32 lines = 0; /* number of lines that have been output */ | |
555 | bool chopspace = (strchr(PL_chopset, ' ') != NULL); /* does $: have space */ | |
556 | const char *chophere = NULL; /* where to chop current item */ | |
f5ada144 | 557 | STRLEN linemark = 0; /* pos of start of line in output */ |
65202027 | 558 | NV value; |
086b26f3 | 559 | bool gotsome = FALSE; /* seen at least one non-blank item on this line */ |
a0d0e21e | 560 | STRLEN len; |
26e935cf | 561 | STRLEN linemax; /* estimate of output size in bytes */ |
1bd51a4c IH |
562 | bool item_is_utf8 = FALSE; |
563 | bool targ_is_utf8 = FALSE; | |
bfed75c6 | 564 | const char *fmt; |
74e0ddf7 | 565 | MAGIC *mg = NULL; |
4ff700b9 DM |
566 | U8 *source; /* source of bytes to append */ |
567 | STRLEN to_copy; /* how may bytes to append */ | |
ea60cfe8 | 568 | char trans; /* what chars to translate */ |
74e0ddf7 | 569 | |
3808a683 | 570 | mg = doparseform(tmpForm); |
a0d0e21e | 571 | |
74e0ddf7 | 572 | fpc = (U32*)mg->mg_ptr; |
3808a683 DM |
573 | /* the actual string the format was compiled from. |
574 | * with overload etc, this may not match tmpForm */ | |
575 | formsv = mg->mg_obj; | |
576 | ||
74e0ddf7 | 577 | |
3280af22 | 578 | SvPV_force(PL_formtarget, len); |
3808a683 | 579 | if (SvTAINTED(tmpForm) || SvTAINTED(formsv)) |
125b9982 | 580 | SvTAINTED_on(PL_formtarget); |
1bd51a4c IH |
581 | if (DO_UTF8(PL_formtarget)) |
582 | targ_is_utf8 = TRUE; | |
26e935cf DM |
583 | linemax = (SvCUR(formsv) * (IN_BYTES ? 1 : 3) + 1); |
584 | t = SvGROW(PL_formtarget, len + linemax + 1); | |
585 | /* XXX from now onwards, SvCUR(PL_formtarget) is invalid */ | |
a0d0e21e | 586 | t += len; |
3808a683 | 587 | f = SvPV_const(formsv, len); |
a0d0e21e LW |
588 | |
589 | for (;;) { | |
590 | DEBUG_f( { | |
bfed75c6 | 591 | const char *name = "???"; |
a0d0e21e LW |
592 | arg = -1; |
593 | switch (*fpc) { | |
594 | case FF_LITERAL: arg = fpc[1]; name = "LITERAL"; break; | |
595 | case FF_BLANK: arg = fpc[1]; name = "BLANK"; break; | |
596 | case FF_SKIP: arg = fpc[1]; name = "SKIP"; break; | |
597 | case FF_FETCH: arg = fpc[1]; name = "FETCH"; break; | |
598 | case FF_DECIMAL: arg = fpc[1]; name = "DECIMAL"; break; | |
599 | ||
600 | case FF_CHECKNL: name = "CHECKNL"; break; | |
601 | case FF_CHECKCHOP: name = "CHECKCHOP"; break; | |
602 | case FF_SPACE: name = "SPACE"; break; | |
603 | case FF_HALFSPACE: name = "HALFSPACE"; break; | |
604 | case FF_ITEM: name = "ITEM"; break; | |
605 | case FF_CHOP: name = "CHOP"; break; | |
606 | case FF_LINEGLOB: name = "LINEGLOB"; break; | |
607 | case FF_NEWLINE: name = "NEWLINE"; break; | |
608 | case FF_MORE: name = "MORE"; break; | |
609 | case FF_LINEMARK: name = "LINEMARK"; break; | |
610 | case FF_END: name = "END"; break; | |
bfed75c6 | 611 | case FF_0DECIMAL: name = "0DECIMAL"; break; |
a1b95068 | 612 | case FF_LINESNGL: name = "LINESNGL"; break; |
a0d0e21e LW |
613 | } |
614 | if (arg >= 0) | |
bf49b057 | 615 | PerlIO_printf(Perl_debug_log, "%-16s%ld\n", name, (long) arg); |
a0d0e21e | 616 | else |
bf49b057 | 617 | PerlIO_printf(Perl_debug_log, "%-16s\n", name); |
5f80b19c | 618 | } ); |
a0d0e21e LW |
619 | switch (*fpc++) { |
620 | case FF_LINEMARK: | |
f5ada144 | 621 | linemark = t - SvPVX(PL_formtarget); |
a0d0e21e LW |
622 | lines++; |
623 | gotsome = FALSE; | |
624 | break; | |
625 | ||
626 | case FF_LITERAL: | |
ea60cfe8 DM |
627 | to_copy = *fpc++; |
628 | source = (U8 *)f; | |
629 | f += to_copy; | |
630 | trans = '~'; | |
75645721 | 631 | item_is_utf8 = targ_is_utf8 ? !!DO_UTF8(formsv) : !!SvUTF8(formsv); |
ea60cfe8 | 632 | goto append; |
a0d0e21e LW |
633 | |
634 | case FF_SKIP: | |
635 | f += *fpc++; | |
636 | break; | |
637 | ||
638 | case FF_FETCH: | |
639 | arg = *fpc++; | |
640 | f += arg; | |
641 | fieldsize = arg; | |
642 | ||
643 | if (MARK < SP) | |
644 | sv = *++MARK; | |
645 | else { | |
3280af22 | 646 | sv = &PL_sv_no; |
a2a5de95 | 647 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), "Not enough format arguments"); |
a0d0e21e | 648 | } |
125b9982 NT |
649 | if (SvTAINTED(sv)) |
650 | SvTAINTED_on(PL_formtarget); | |
a0d0e21e LW |
651 | break; |
652 | ||
653 | case FF_CHECKNL: | |
5a34cab7 NC |
654 | { |
655 | const char *send; | |
656 | const char *s = item = SvPV_const(sv, len); | |
657 | itemsize = len; | |
658 | if (DO_UTF8(sv)) { | |
659 | itemsize = sv_len_utf8(sv); | |
660 | if (itemsize != (I32)len) { | |
661 | I32 itembytes; | |
662 | if (itemsize > fieldsize) { | |
663 | itemsize = fieldsize; | |
664 | itembytes = itemsize; | |
665 | sv_pos_u2b(sv, &itembytes, 0); | |
666 | } | |
667 | else | |
668 | itembytes = len; | |
669 | send = chophere = s + itembytes; | |
670 | while (s < send) { | |
671 | if (*s & ~31) | |
672 | gotsome = TRUE; | |
673 | else if (*s == '\n') | |
674 | break; | |
675 | s++; | |
676 | } | |
677 | item_is_utf8 = TRUE; | |
678 | itemsize = s - item; | |
679 | sv_pos_b2u(sv, &itemsize); | |
680 | break; | |
a0ed51b3 | 681 | } |
a0ed51b3 | 682 | } |
5a34cab7 NC |
683 | item_is_utf8 = FALSE; |
684 | if (itemsize > fieldsize) | |
685 | itemsize = fieldsize; | |
686 | send = chophere = s + itemsize; | |
687 | while (s < send) { | |
688 | if (*s & ~31) | |
689 | gotsome = TRUE; | |
690 | else if (*s == '\n') | |
691 | break; | |
692 | s++; | |
693 | } | |
694 | itemsize = s - item; | |
695 | break; | |
a0ed51b3 | 696 | } |
a0d0e21e LW |
697 | |
698 | case FF_CHECKCHOP: | |
5a34cab7 NC |
699 | { |
700 | const char *s = item = SvPV_const(sv, len); | |
701 | itemsize = len; | |
702 | if (DO_UTF8(sv)) { | |
703 | itemsize = sv_len_utf8(sv); | |
704 | if (itemsize != (I32)len) { | |
705 | I32 itembytes; | |
706 | if (itemsize <= fieldsize) { | |
707 | const char *send = chophere = s + itemsize; | |
708 | while (s < send) { | |
709 | if (*s == '\r') { | |
710 | itemsize = s - item; | |
a0ed51b3 | 711 | chophere = s; |
a0ed51b3 | 712 | break; |
5a34cab7 NC |
713 | } |
714 | if (*s++ & ~31) | |
a0ed51b3 | 715 | gotsome = TRUE; |
a0ed51b3 | 716 | } |
a0ed51b3 | 717 | } |
5a34cab7 NC |
718 | else { |
719 | const char *send; | |
720 | itemsize = fieldsize; | |
721 | itembytes = itemsize; | |
722 | sv_pos_u2b(sv, &itembytes, 0); | |
723 | send = chophere = s + itembytes; | |
724 | while (s < send || (s == send && isSPACE(*s))) { | |
725 | if (isSPACE(*s)) { | |
726 | if (chopspace) | |
727 | chophere = s; | |
728 | if (*s == '\r') | |
729 | break; | |
730 | } | |
731 | else { | |
732 | if (*s & ~31) | |
733 | gotsome = TRUE; | |
734 | if (strchr(PL_chopset, *s)) | |
735 | chophere = s + 1; | |
736 | } | |
737 | s++; | |
738 | } | |
739 | itemsize = chophere - item; | |
740 | sv_pos_b2u(sv, &itemsize); | |
741 | } | |
742 | item_is_utf8 = TRUE; | |
a0d0e21e LW |
743 | break; |
744 | } | |
a0d0e21e | 745 | } |
5a34cab7 NC |
746 | item_is_utf8 = FALSE; |
747 | if (itemsize <= fieldsize) { | |
748 | const char *const send = chophere = s + itemsize; | |
749 | while (s < send) { | |
750 | if (*s == '\r') { | |
751 | itemsize = s - item; | |
a0d0e21e | 752 | chophere = s; |
a0d0e21e | 753 | break; |
5a34cab7 NC |
754 | } |
755 | if (*s++ & ~31) | |
a0d0e21e | 756 | gotsome = TRUE; |
a0d0e21e | 757 | } |
a0d0e21e | 758 | } |
5a34cab7 NC |
759 | else { |
760 | const char *send; | |
761 | itemsize = fieldsize; | |
762 | send = chophere = s + itemsize; | |
763 | while (s < send || (s == send && isSPACE(*s))) { | |
764 | if (isSPACE(*s)) { | |
765 | if (chopspace) | |
766 | chophere = s; | |
767 | if (*s == '\r') | |
768 | break; | |
769 | } | |
770 | else { | |
771 | if (*s & ~31) | |
772 | gotsome = TRUE; | |
773 | if (strchr(PL_chopset, *s)) | |
774 | chophere = s + 1; | |
775 | } | |
776 | s++; | |
777 | } | |
778 | itemsize = chophere - item; | |
779 | } | |
780 | break; | |
a0d0e21e | 781 | } |
a0d0e21e LW |
782 | |
783 | case FF_SPACE: | |
784 | arg = fieldsize - itemsize; | |
785 | if (arg) { | |
786 | fieldsize -= arg; | |
787 | while (arg-- > 0) | |
788 | *t++ = ' '; | |
789 | } | |
790 | break; | |
791 | ||
792 | case FF_HALFSPACE: | |
793 | arg = fieldsize - itemsize; | |
794 | if (arg) { | |
795 | arg /= 2; | |
796 | fieldsize -= arg; | |
797 | while (arg-- > 0) | |
798 | *t++ = ' '; | |
799 | } | |
800 | break; | |
801 | ||
802 | case FF_ITEM: | |
8aa7beb6 DM |
803 | to_copy = itemsize; |
804 | source = (U8 *)item; | |
805 | trans = 1; | |
806 | if (item_is_utf8) { | |
807 | /* convert to_copy from chars to bytes */ | |
808 | U8 *s = source; | |
809 | while (to_copy--) | |
810 | s += UTF8SKIP(s); | |
811 | to_copy = s - source; | |
a0d0e21e | 812 | } |
8aa7beb6 | 813 | goto append; |
a0d0e21e LW |
814 | |
815 | case FF_CHOP: | |
5a34cab7 NC |
816 | { |
817 | const char *s = chophere; | |
818 | if (chopspace) { | |
af68e756 | 819 | while (isSPACE(*s)) |
5a34cab7 NC |
820 | s++; |
821 | } | |
822 | sv_chop(sv,s); | |
823 | SvSETMAGIC(sv); | |
824 | break; | |
a0d0e21e | 825 | } |
a0d0e21e | 826 | |
a1b95068 WL |
827 | case FF_LINESNGL: |
828 | chopspace = 0; | |
a0d0e21e | 829 | case FF_LINEGLOB: |
5a34cab7 | 830 | { |
e32383e2 | 831 | const bool oneline = fpc[-1] == FF_LINESNGL; |
5a34cab7 | 832 | const char *s = item = SvPV_const(sv, len); |
7440a75b | 833 | const char *const send = s + len; |
7440a75b | 834 | |
f3f2f1a3 | 835 | item_is_utf8 = DO_UTF8(sv); |
a1137ee5 | 836 | if (!len) |
7440a75b | 837 | break; |
ea60cfe8 | 838 | trans = 0; |
0d21cefe | 839 | gotsome = TRUE; |
a1137ee5 | 840 | chophere = s + len; |
4ff700b9 DM |
841 | source = (U8 *) s; |
842 | to_copy = len; | |
0d21cefe DM |
843 | while (s < send) { |
844 | if (*s++ == '\n') { | |
845 | if (oneline) { | |
846 | to_copy = s - SvPVX_const(sv) - 1; | |
847 | chophere = s; | |
848 | break; | |
849 | } else { | |
850 | if (s == send) { | |
0d21cefe DM |
851 | to_copy--; |
852 | } else | |
853 | lines++; | |
1bd51a4c | 854 | } |
a0d0e21e | 855 | } |
0d21cefe | 856 | } |
a2c0032b DM |
857 | } |
858 | ||
ea60cfe8 DM |
859 | append: |
860 | /* append to_copy bytes from source to PL_formstring. | |
861 | * item_is_utf8 implies source is utf8. | |
862 | * if trans, translate certain characters during the copy */ | |
a2c0032b DM |
863 | { |
864 | U8 *tmp = NULL; | |
26e935cf | 865 | STRLEN grow = 0; |
0325ce87 DM |
866 | |
867 | SvCUR_set(PL_formtarget, | |
868 | t - SvPVX_const(PL_formtarget)); | |
869 | ||
0d21cefe DM |
870 | if (targ_is_utf8 && !item_is_utf8) { |
871 | source = tmp = bytes_to_utf8(source, &to_copy); | |
0d21cefe DM |
872 | } else { |
873 | if (item_is_utf8 && !targ_is_utf8) { | |
f5ada144 | 874 | U8 *s; |
0d21cefe | 875 | /* Upgrade targ to UTF8, and then we reduce it to |
0325ce87 DM |
876 | a problem we have a simple solution for. |
877 | Don't need get magic. */ | |
0d21cefe | 878 | sv_utf8_upgrade_nomg(PL_formtarget); |
0325ce87 | 879 | targ_is_utf8 = TRUE; |
f5ada144 DM |
880 | /* re-calculate linemark */ |
881 | s = (U8*)SvPVX(PL_formtarget); | |
26e935cf DM |
882 | /* the bytes we initially allocated to append the |
883 | * whole line may have been gobbled up during the | |
884 | * upgrade, so allocate a whole new line's worth | |
885 | * for safety */ | |
886 | grow = linemax; | |
f5ada144 DM |
887 | while (linemark--) |
888 | s += UTF8SKIP(s); | |
889 | linemark = s - (U8*)SvPVX(PL_formtarget); | |
e8e72d41 | 890 | } |
0d21cefe DM |
891 | /* Easy. They agree. */ |
892 | assert (item_is_utf8 == targ_is_utf8); | |
893 | } | |
26e935cf DM |
894 | if (!trans) |
895 | /* @* and ^* are the only things that can exceed | |
896 | * the linemax, so grow by the output size, plus | |
897 | * a whole new form's worth in case of any further | |
898 | * output */ | |
899 | grow = linemax + to_copy; | |
900 | if (grow) | |
901 | SvGROW(PL_formtarget, SvCUR(PL_formtarget) + grow + 1); | |
0d21cefe DM |
902 | t = SvPVX(PL_formtarget) + SvCUR(PL_formtarget); |
903 | ||
904 | Copy(source, t, to_copy, char); | |
ea60cfe8 | 905 | if (trans) { |
8aa7beb6 DM |
906 | /* blank out ~ or control chars, depending on trans. |
907 | * works on bytes not chars, so relies on not | |
908 | * matching utf8 continuation bytes */ | |
ea60cfe8 DM |
909 | U8 *s = (U8*)t; |
910 | U8 *send = s + to_copy; | |
911 | while (s < send) { | |
8aa7beb6 DM |
912 | const int ch = *s; |
913 | if (trans == '~' ? (ch == '~') : | |
914 | #ifdef EBCDIC | |
915 | iscntrl(ch) | |
916 | #else | |
917 | (!(ch & ~31)) | |
918 | #endif | |
919 | ) | |
ea60cfe8 DM |
920 | *s = ' '; |
921 | s++; | |
922 | } | |
923 | } | |
924 | ||
0d21cefe DM |
925 | t += to_copy; |
926 | SvCUR_set(PL_formtarget, SvCUR(PL_formtarget) + to_copy); | |
a1137ee5 | 927 | if (tmp) |
0d21cefe | 928 | Safefree(tmp); |
5a34cab7 | 929 | break; |
a0d0e21e | 930 | } |
a0d0e21e | 931 | |
a1b95068 WL |
932 | case FF_0DECIMAL: |
933 | arg = *fpc++; | |
934 | #if defined(USE_LONG_DOUBLE) | |
10edeb5d | 935 | fmt = (const char *) |
a701009a | 936 | ((arg & FORM_NUM_POINT) ? |
10edeb5d | 937 | "%#0*.*" PERL_PRIfldbl : "%0*.*" PERL_PRIfldbl); |
a1b95068 | 938 | #else |
10edeb5d | 939 | fmt = (const char *) |
a701009a | 940 | ((arg & FORM_NUM_POINT) ? |
10edeb5d | 941 | "%#0*.*f" : "%0*.*f"); |
a1b95068 WL |
942 | #endif |
943 | goto ff_dec; | |
a0d0e21e | 944 | case FF_DECIMAL: |
a0d0e21e | 945 | arg = *fpc++; |
65202027 | 946 | #if defined(USE_LONG_DOUBLE) |
10edeb5d | 947 | fmt = (const char *) |
a701009a | 948 | ((arg & FORM_NUM_POINT) ? "%#*.*" PERL_PRIfldbl : "%*.*" PERL_PRIfldbl); |
65202027 | 949 | #else |
10edeb5d | 950 | fmt = (const char *) |
a701009a | 951 | ((arg & FORM_NUM_POINT) ? "%#*.*f" : "%*.*f"); |
65202027 | 952 | #endif |
a1b95068 | 953 | ff_dec: |
784707d5 JP |
954 | /* If the field is marked with ^ and the value is undefined, |
955 | blank it out. */ | |
a701009a | 956 | if ((arg & FORM_NUM_BLANK) && !SvOK(sv)) { |
784707d5 JP |
957 | arg = fieldsize; |
958 | while (arg--) | |
959 | *t++ = ' '; | |
960 | break; | |
961 | } | |
962 | gotsome = TRUE; | |
963 | value = SvNV(sv); | |
a1b95068 | 964 | /* overflow evidence */ |
bfed75c6 | 965 | if (num_overflow(value, fieldsize, arg)) { |
a1b95068 WL |
966 | arg = fieldsize; |
967 | while (arg--) | |
968 | *t++ = '#'; | |
969 | break; | |
970 | } | |
784707d5 JP |
971 | /* Formats aren't yet marked for locales, so assume "yes". */ |
972 | { | |
973 | STORE_NUMERIC_STANDARD_SET_LOCAL(); | |
a701009a DM |
974 | arg &= ~(FORM_NUM_POINT|FORM_NUM_BLANK); |
975 | my_snprintf(t, SvLEN(PL_formtarget) - (t - SvPVX(PL_formtarget)), fmt, (int) fieldsize, (int) arg, value); | |
784707d5 JP |
976 | RESTORE_NUMERIC_STANDARD(); |
977 | } | |
978 | t += fieldsize; | |
979 | break; | |
a1b95068 | 980 | |
a0d0e21e LW |
981 | case FF_NEWLINE: |
982 | f++; | |
f5ada144 | 983 | while (t-- > (SvPVX(PL_formtarget) + linemark) && *t == ' ') ; |
a0d0e21e LW |
984 | t++; |
985 | *t++ = '\n'; | |
986 | break; | |
987 | ||
988 | case FF_BLANK: | |
989 | arg = *fpc++; | |
990 | if (gotsome) { | |
991 | if (arg) { /* repeat until fields exhausted? */ | |
11f9eeaf DM |
992 | fpc--; |
993 | goto end; | |
a0d0e21e LW |
994 | } |
995 | } | |
996 | else { | |
f5ada144 | 997 | t = SvPVX(PL_formtarget) + linemark; |
a0d0e21e LW |
998 | lines--; |
999 | } | |
1000 | break; | |
1001 | ||
1002 | case FF_MORE: | |
5a34cab7 NC |
1003 | { |
1004 | const char *s = chophere; | |
1005 | const char *send = item + len; | |
1006 | if (chopspace) { | |
af68e756 | 1007 | while (isSPACE(*s) && (s < send)) |
5a34cab7 | 1008 | s++; |
a0d0e21e | 1009 | } |
5a34cab7 NC |
1010 | if (s < send) { |
1011 | char *s1; | |
1012 | arg = fieldsize - itemsize; | |
1013 | if (arg) { | |
1014 | fieldsize -= arg; | |
1015 | while (arg-- > 0) | |
1016 | *t++ = ' '; | |
1017 | } | |
1018 | s1 = t - 3; | |
1019 | if (strnEQ(s1," ",3)) { | |
1020 | while (s1 > SvPVX_const(PL_formtarget) && isSPACE(s1[-1])) | |
1021 | s1--; | |
1022 | } | |
1023 | *s1++ = '.'; | |
1024 | *s1++ = '.'; | |
1025 | *s1++ = '.'; | |
a0d0e21e | 1026 | } |
5a34cab7 | 1027 | break; |
a0d0e21e | 1028 | } |
a0d0e21e | 1029 | case FF_END: |
11f9eeaf | 1030 | end: |
bf2bec63 | 1031 | assert(t < SvPVX_const(PL_formtarget) + SvLEN(PL_formtarget)); |
a0d0e21e | 1032 | *t = '\0'; |
b15aece3 | 1033 | SvCUR_set(PL_formtarget, t - SvPVX_const(PL_formtarget)); |
1bd51a4c IH |
1034 | if (targ_is_utf8) |
1035 | SvUTF8_on(PL_formtarget); | |
3280af22 | 1036 | FmLINES(PL_formtarget) += lines; |
a0d0e21e | 1037 | SP = ORIGMARK; |
11f9eeaf DM |
1038 | if (fpc[-1] == FF_BLANK) |
1039 | RETURNOP(cLISTOP->op_first); | |
1040 | else | |
1041 | RETPUSHYES; | |
a0d0e21e LW |
1042 | } |
1043 | } | |
1044 | } | |
1045 | ||
1046 | PP(pp_grepstart) | |
1047 | { | |
27da23d5 | 1048 | dVAR; dSP; |
a0d0e21e LW |
1049 | SV *src; |
1050 | ||
3280af22 | 1051 | if (PL_stack_base + *PL_markstack_ptr == SP) { |
a0d0e21e | 1052 | (void)POPMARK; |
54310121 | 1053 | if (GIMME_V == G_SCALAR) |
6e449a3a | 1054 | mXPUSHi(0); |
533c011a | 1055 | RETURNOP(PL_op->op_next->op_next); |
a0d0e21e | 1056 | } |
3280af22 | 1057 | PL_stack_sp = PL_stack_base + *PL_markstack_ptr + 1; |
897d3989 NC |
1058 | Perl_pp_pushmark(aTHX); /* push dst */ |
1059 | Perl_pp_pushmark(aTHX); /* push src */ | |
d343c3ef | 1060 | ENTER_with_name("grep"); /* enter outer scope */ |
a0d0e21e LW |
1061 | |
1062 | SAVETMPS; | |
59f00321 RGS |
1063 | if (PL_op->op_private & OPpGREP_LEX) |
1064 | SAVESPTR(PAD_SVl(PL_op->op_targ)); | |
1065 | else | |
1066 | SAVE_DEFSV; | |
d343c3ef | 1067 | ENTER_with_name("grep_item"); /* enter inner scope */ |
7766f137 | 1068 | SAVEVPTR(PL_curpm); |
a0d0e21e | 1069 | |
3280af22 | 1070 | src = PL_stack_base[*PL_markstack_ptr]; |
a0d0e21e | 1071 | SvTEMP_off(src); |
59f00321 RGS |
1072 | if (PL_op->op_private & OPpGREP_LEX) |
1073 | PAD_SVl(PL_op->op_targ) = src; | |
1074 | else | |
414bf5ae | 1075 | DEFSV_set(src); |
a0d0e21e LW |
1076 | |
1077 | PUTBACK; | |
533c011a | 1078 | if (PL_op->op_type == OP_MAPSTART) |
897d3989 | 1079 | Perl_pp_pushmark(aTHX); /* push top */ |
533c011a | 1080 | return ((LOGOP*)PL_op->op_next)->op_other; |
a0d0e21e LW |
1081 | } |
1082 | ||
a0d0e21e LW |
1083 | PP(pp_mapwhile) |
1084 | { | |
27da23d5 | 1085 | dVAR; dSP; |
f54cb97a | 1086 | const I32 gimme = GIMME_V; |
544f3153 | 1087 | I32 items = (SP - PL_stack_base) - *PL_markstack_ptr; /* how many new items */ |
a0d0e21e LW |
1088 | I32 count; |
1089 | I32 shift; | |
1090 | SV** src; | |
ac27b0f5 | 1091 | SV** dst; |
a0d0e21e | 1092 | |
544f3153 | 1093 | /* first, move source pointer to the next item in the source list */ |
3280af22 | 1094 | ++PL_markstack_ptr[-1]; |
544f3153 GS |
1095 | |
1096 | /* if there are new items, push them into the destination list */ | |
4c90a460 | 1097 | if (items && gimme != G_VOID) { |
544f3153 GS |
1098 | /* might need to make room back there first */ |
1099 | if (items > PL_markstack_ptr[-1] - PL_markstack_ptr[-2]) { | |
1100 | /* XXX this implementation is very pessimal because the stack | |
1101 | * is repeatedly extended for every set of items. Is possible | |
1102 | * to do this without any stack extension or copying at all | |
1103 | * by maintaining a separate list over which the map iterates | |
18ef8bea | 1104 | * (like foreach does). --gsar */ |
544f3153 GS |
1105 | |
1106 | /* everything in the stack after the destination list moves | |
1107 | * towards the end the stack by the amount of room needed */ | |
1108 | shift = items - (PL_markstack_ptr[-1] - PL_markstack_ptr[-2]); | |
1109 | ||
1110 | /* items to shift up (accounting for the moved source pointer) */ | |
1111 | count = (SP - PL_stack_base) - (PL_markstack_ptr[-1] - 1); | |
18ef8bea BT |
1112 | |
1113 | /* This optimization is by Ben Tilly and it does | |
1114 | * things differently from what Sarathy (gsar) | |
1115 | * is describing. The downside of this optimization is | |
1116 | * that leaves "holes" (uninitialized and hopefully unused areas) | |
1117 | * to the Perl stack, but on the other hand this | |
1118 | * shouldn't be a problem. If Sarathy's idea gets | |
1119 | * implemented, this optimization should become | |
1120 | * irrelevant. --jhi */ | |
1121 | if (shift < count) | |
1122 | shift = count; /* Avoid shifting too often --Ben Tilly */ | |
bfed75c6 | 1123 | |
924508f0 GS |
1124 | EXTEND(SP,shift); |
1125 | src = SP; | |
1126 | dst = (SP += shift); | |
3280af22 NIS |
1127 | PL_markstack_ptr[-1] += shift; |
1128 | *PL_markstack_ptr += shift; | |
544f3153 | 1129 | while (count--) |
a0d0e21e LW |
1130 | *dst-- = *src--; |
1131 | } | |
544f3153 | 1132 | /* copy the new items down to the destination list */ |
ac27b0f5 | 1133 | dst = PL_stack_base + (PL_markstack_ptr[-2] += items) - 1; |
22023b26 | 1134 | if (gimme == G_ARRAY) { |
b2a2a901 DM |
1135 | /* add returned items to the collection (making mortal copies |
1136 | * if necessary), then clear the current temps stack frame | |
1137 | * *except* for those items. We do this splicing the items | |
1138 | * into the start of the tmps frame (so some items may be on | |
59d53fd6 | 1139 | * the tmps stack twice), then moving PL_tmps_floor above |
b2a2a901 DM |
1140 | * them, then freeing the frame. That way, the only tmps that |
1141 | * accumulate over iterations are the return values for map. | |
1142 | * We have to do to this way so that everything gets correctly | |
1143 | * freed if we die during the map. | |
1144 | */ | |
1145 | I32 tmpsbase; | |
1146 | I32 i = items; | |
1147 | /* make space for the slice */ | |
1148 | EXTEND_MORTAL(items); | |
1149 | tmpsbase = PL_tmps_floor + 1; | |
1150 | Move(PL_tmps_stack + tmpsbase, | |
1151 | PL_tmps_stack + tmpsbase + items, | |
1152 | PL_tmps_ix - PL_tmps_floor, | |
1153 | SV*); | |
1154 | PL_tmps_ix += items; | |
1155 | ||
1156 | while (i-- > 0) { | |
1157 | SV *sv = POPs; | |
1158 | if (!SvTEMP(sv)) | |
1159 | sv = sv_mortalcopy(sv); | |
1160 | *dst-- = sv; | |
1161 | PL_tmps_stack[tmpsbase++] = SvREFCNT_inc_simple(sv); | |
1162 | } | |
1163 | /* clear the stack frame except for the items */ | |
1164 | PL_tmps_floor += items; | |
1165 | FREETMPS; | |
1166 | /* FREETMPS may have cleared the TEMP flag on some of the items */ | |
1167 | i = items; | |
1168 | while (i-- > 0) | |
1169 | SvTEMP_on(PL_tmps_stack[--tmpsbase]); | |
22023b26 | 1170 | } |
bfed75c6 | 1171 | else { |
22023b26 TP |
1172 | /* scalar context: we don't care about which values map returns |
1173 | * (we use undef here). And so we certainly don't want to do mortal | |
1174 | * copies of meaningless values. */ | |
1175 | while (items-- > 0) { | |
b988aa42 | 1176 | (void)POPs; |
22023b26 TP |
1177 | *dst-- = &PL_sv_undef; |
1178 | } | |
b2a2a901 | 1179 | FREETMPS; |
22023b26 | 1180 | } |
a0d0e21e | 1181 | } |
b2a2a901 DM |
1182 | else { |
1183 | FREETMPS; | |
1184 | } | |
d343c3ef | 1185 | LEAVE_with_name("grep_item"); /* exit inner scope */ |
a0d0e21e LW |
1186 | |
1187 | /* All done yet? */ | |
3280af22 | 1188 | if (PL_markstack_ptr[-1] > *PL_markstack_ptr) { |
a0d0e21e LW |
1189 | |
1190 | (void)POPMARK; /* pop top */ | |
d343c3ef | 1191 | LEAVE_with_name("grep"); /* exit outer scope */ |
a0d0e21e | 1192 | (void)POPMARK; /* pop src */ |
3280af22 | 1193 | items = --*PL_markstack_ptr - PL_markstack_ptr[-1]; |
a0d0e21e | 1194 | (void)POPMARK; /* pop dst */ |
3280af22 | 1195 | SP = PL_stack_base + POPMARK; /* pop original mark */ |
54310121 | 1196 | if (gimme == G_SCALAR) { |
7cc47870 RGS |
1197 | if (PL_op->op_private & OPpGREP_LEX) { |
1198 | SV* sv = sv_newmortal(); | |
1199 | sv_setiv(sv, items); | |
1200 | PUSHs(sv); | |
1201 | } | |
1202 | else { | |
1203 | dTARGET; | |
1204 | XPUSHi(items); | |
1205 | } | |
a0d0e21e | 1206 | } |
54310121 | 1207 | else if (gimme == G_ARRAY) |
1208 | SP += items; | |
a0d0e21e LW |
1209 | RETURN; |
1210 | } | |
1211 | else { | |
1212 | SV *src; | |
1213 | ||
d343c3ef | 1214 | ENTER_with_name("grep_item"); /* enter inner scope */ |
7766f137 | 1215 | SAVEVPTR(PL_curpm); |
a0d0e21e | 1216 | |
544f3153 | 1217 | /* set $_ to the new source item */ |
3280af22 | 1218 | src = PL_stack_base[PL_markstack_ptr[-1]]; |
a0d0e21e | 1219 | SvTEMP_off(src); |
59f00321 RGS |
1220 | if (PL_op->op_private & OPpGREP_LEX) |
1221 | PAD_SVl(PL_op->op_targ) = src; | |
1222 | else | |
414bf5ae | 1223 | DEFSV_set(src); |
a0d0e21e LW |
1224 | |
1225 | RETURNOP(cLOGOP->op_other); | |
1226 | } | |
1227 | } | |
1228 | ||
a0d0e21e LW |
1229 | /* Range stuff. */ |
1230 | ||
1231 | PP(pp_range) | |
1232 | { | |
97aff369 | 1233 | dVAR; |
a0d0e21e | 1234 | if (GIMME == G_ARRAY) |
1a67a97c | 1235 | return NORMAL; |
538573f7 | 1236 | if (SvTRUEx(PAD_SV(PL_op->op_targ))) |
1a67a97c | 1237 | return cLOGOP->op_other; |
538573f7 | 1238 | else |
1a67a97c | 1239 | return NORMAL; |
a0d0e21e LW |
1240 | } |
1241 | ||
1242 | PP(pp_flip) | |
1243 | { | |
97aff369 | 1244 | dVAR; |
39644a26 | 1245 | dSP; |
a0d0e21e LW |
1246 | |
1247 | if (GIMME == G_ARRAY) { | |
1a67a97c | 1248 | RETURNOP(((LOGOP*)cUNOP->op_first)->op_other); |
a0d0e21e LW |
1249 | } |
1250 | else { | |
1251 | dTOPss; | |
44f8325f | 1252 | SV * const targ = PAD_SV(PL_op->op_targ); |
bfed75c6 | 1253 | int flip = 0; |
790090df | 1254 | |
bfed75c6 | 1255 | if (PL_op->op_private & OPpFLIP_LINENUM) { |
4e3399f9 YST |
1256 | if (GvIO(PL_last_in_gv)) { |
1257 | flip = SvIV(sv) == (IV)IoLINES(GvIOp(PL_last_in_gv)); | |
1258 | } | |
1259 | else { | |
fafc274c | 1260 | GV * const gv = gv_fetchpvs(".", GV_ADD|GV_NOTQUAL, SVt_PV); |
44f8325f AL |
1261 | if (gv && GvSV(gv)) |
1262 | flip = SvIV(sv) == SvIV(GvSV(gv)); | |
4e3399f9 | 1263 | } |
bfed75c6 AL |
1264 | } else { |
1265 | flip = SvTRUE(sv); | |
1266 | } | |
1267 | if (flip) { | |
a0d0e21e | 1268 | sv_setiv(PAD_SV(cUNOP->op_first->op_targ), 1); |
533c011a | 1269 | if (PL_op->op_flags & OPf_SPECIAL) { |
a0d0e21e | 1270 | sv_setiv(targ, 1); |
3e3baf6d | 1271 | SETs(targ); |
a0d0e21e LW |
1272 | RETURN; |
1273 | } | |
1274 | else { | |
1275 | sv_setiv(targ, 0); | |
924508f0 | 1276 | SP--; |
1a67a97c | 1277 | RETURNOP(((LOGOP*)cUNOP->op_first)->op_other); |
a0d0e21e LW |
1278 | } |
1279 | } | |
76f68e9b | 1280 | sv_setpvs(TARG, ""); |
a0d0e21e LW |
1281 | SETs(targ); |
1282 | RETURN; | |
1283 | } | |
1284 | } | |
1285 | ||
8e9bbdb9 RGS |
1286 | /* This code tries to decide if "$left .. $right" should use the |
1287 | magical string increment, or if the range is numeric (we make | |
1288 | an exception for .."0" [#18165]). AMS 20021031. */ | |
1289 | ||
1290 | #define RANGE_IS_NUMERIC(left,right) ( \ | |
b0e74086 RGS |
1291 | SvNIOKp(left) || (SvOK(left) && !SvPOKp(left)) || \ |
1292 | SvNIOKp(right) || (SvOK(right) && !SvPOKp(right)) || \ | |
e0ab1c0e | 1293 | (((!SvOK(left) && SvOK(right)) || ((!SvOK(left) || \ |
b15aece3 | 1294 | looks_like_number(left)) && SvPOKp(left) && *SvPVX_const(left) != '0')) \ |
e0ab1c0e | 1295 | && (!SvOK(right) || looks_like_number(right)))) |
8e9bbdb9 | 1296 | |
a0d0e21e LW |
1297 | PP(pp_flop) |
1298 | { | |
97aff369 | 1299 | dVAR; dSP; |
a0d0e21e LW |
1300 | |
1301 | if (GIMME == G_ARRAY) { | |
1302 | dPOPPOPssrl; | |
86cb7173 | 1303 | |
5b295bef RD |
1304 | SvGETMAGIC(left); |
1305 | SvGETMAGIC(right); | |
a0d0e21e | 1306 | |
8e9bbdb9 | 1307 | if (RANGE_IS_NUMERIC(left,right)) { |
901017d6 AL |
1308 | register IV i, j; |
1309 | IV max; | |
f52e41ad FC |
1310 | if ((SvOK(left) && SvNV_nomg(left) < IV_MIN) || |
1311 | (SvOK(right) && SvNV_nomg(right) > IV_MAX)) | |
d470f89e | 1312 | DIE(aTHX_ "Range iterator outside integer range"); |
f52e41ad FC |
1313 | i = SvIV_nomg(left); |
1314 | max = SvIV_nomg(right); | |
bbce6d69 | 1315 | if (max >= i) { |
c1ab3db2 AK |
1316 | j = max - i + 1; |
1317 | EXTEND_MORTAL(j); | |
1318 | EXTEND(SP, j); | |
bbce6d69 | 1319 | } |
c1ab3db2 AK |
1320 | else |
1321 | j = 0; | |
1322 | while (j--) { | |
901017d6 | 1323 | SV * const sv = sv_2mortal(newSViv(i++)); |
a0d0e21e LW |
1324 | PUSHs(sv); |
1325 | } | |
1326 | } | |
1327 | else { | |
3c323193 FC |
1328 | STRLEN len, llen; |
1329 | const char * const lpv = SvPV_nomg_const(left, llen); | |
f52e41ad | 1330 | const char * const tmps = SvPV_nomg_const(right, len); |
a0d0e21e | 1331 | |
3c323193 | 1332 | SV *sv = newSVpvn_flags(lpv, llen, SvUTF8(left)|SVs_TEMP); |
89ea2908 | 1333 | while (!SvNIOKp(sv) && SvCUR(sv) <= len) { |
a0d0e21e | 1334 | XPUSHs(sv); |
b15aece3 | 1335 | if (strEQ(SvPVX_const(sv),tmps)) |
89ea2908 | 1336 | break; |
a0d0e21e LW |
1337 | sv = sv_2mortal(newSVsv(sv)); |
1338 | sv_inc(sv); | |
1339 | } | |
a0d0e21e LW |
1340 | } |
1341 | } | |
1342 | else { | |
1343 | dTOPss; | |
901017d6 | 1344 | SV * const targ = PAD_SV(cUNOP->op_first->op_targ); |
4e3399f9 | 1345 | int flop = 0; |
a0d0e21e | 1346 | sv_inc(targ); |
4e3399f9 YST |
1347 | |
1348 | if (PL_op->op_private & OPpFLIP_LINENUM) { | |
1349 | if (GvIO(PL_last_in_gv)) { | |
1350 | flop = SvIV(sv) == (IV)IoLINES(GvIOp(PL_last_in_gv)); | |
1351 | } | |
1352 | else { | |
fafc274c | 1353 | GV * const gv = gv_fetchpvs(".", GV_ADD|GV_NOTQUAL, SVt_PV); |
4e3399f9 YST |
1354 | if (gv && GvSV(gv)) flop = SvIV(sv) == SvIV(GvSV(gv)); |
1355 | } | |
1356 | } | |
1357 | else { | |
1358 | flop = SvTRUE(sv); | |
1359 | } | |
1360 | ||
1361 | if (flop) { | |
a0d0e21e | 1362 | sv_setiv(PAD_SV(((UNOP*)cUNOP->op_first)->op_first->op_targ), 0); |
396482e1 | 1363 | sv_catpvs(targ, "E0"); |
a0d0e21e LW |
1364 | } |
1365 | SETs(targ); | |
1366 | } | |
1367 | ||
1368 | RETURN; | |
1369 | } | |
1370 | ||
1371 | /* Control. */ | |
1372 | ||
27da23d5 | 1373 | static const char * const context_name[] = { |
515afda2 | 1374 | "pseudo-block", |
f31522f3 | 1375 | NULL, /* CXt_WHEN never actually needs "block" */ |
76753e7f | 1376 | NULL, /* CXt_BLOCK never actually needs "block" */ |
f31522f3 | 1377 | NULL, /* CXt_GIVEN never actually needs "block" */ |
76753e7f NC |
1378 | NULL, /* CXt_LOOP_FOR never actually needs "loop" */ |
1379 | NULL, /* CXt_LOOP_PLAIN never actually needs "loop" */ | |
1380 | NULL, /* CXt_LOOP_LAZYSV never actually needs "loop" */ | |
1381 | NULL, /* CXt_LOOP_LAZYIV never actually needs "loop" */ | |
515afda2 | 1382 | "subroutine", |
76753e7f | 1383 | "format", |
515afda2 | 1384 | "eval", |
515afda2 | 1385 | "substitution", |
515afda2 NC |
1386 | }; |
1387 | ||
76e3520e | 1388 | STATIC I32 |
06b5626a | 1389 | S_dopoptolabel(pTHX_ const char *label) |
a0d0e21e | 1390 | { |
97aff369 | 1391 | dVAR; |
a0d0e21e | 1392 | register I32 i; |
a0d0e21e | 1393 | |
7918f24d NC |
1394 | PERL_ARGS_ASSERT_DOPOPTOLABEL; |
1395 | ||
a0d0e21e | 1396 | for (i = cxstack_ix; i >= 0; i--) { |
901017d6 | 1397 | register const PERL_CONTEXT * const cx = &cxstack[i]; |
6b35e009 | 1398 | switch (CxTYPE(cx)) { |
a0d0e21e | 1399 | case CXt_SUBST: |
a0d0e21e | 1400 | case CXt_SUB: |
7766f137 | 1401 | case CXt_FORMAT: |
a0d0e21e | 1402 | case CXt_EVAL: |
0a753a76 | 1403 | case CXt_NULL: |
dcbac5bb | 1404 | /* diag_listed_as: Exiting subroutine via %s */ |
a2a5de95 NC |
1405 | Perl_ck_warner(aTHX_ packWARN(WARN_EXITING), "Exiting %s via %s", |
1406 | context_name[CxTYPE(cx)], OP_NAME(PL_op)); | |
515afda2 NC |
1407 | if (CxTYPE(cx) == CXt_NULL) |
1408 | return -1; | |
1409 | break; | |
c6fdafd0 | 1410 | case CXt_LOOP_LAZYIV: |
d01136d6 | 1411 | case CXt_LOOP_LAZYSV: |
3b719c58 NC |
1412 | case CXt_LOOP_FOR: |
1413 | case CXt_LOOP_PLAIN: | |
7e8f1eac AD |
1414 | { |
1415 | const char *cx_label = CxLABEL(cx); | |
1416 | if (!cx_label || strNE(label, cx_label) ) { | |
1c98cc53 | 1417 | DEBUG_l(Perl_deb(aTHX_ "(poptolabel(): skipping label at cx=%ld %s)\n", |
7e8f1eac | 1418 | (long)i, cx_label)); |
a0d0e21e LW |
1419 | continue; |
1420 | } | |
1c98cc53 | 1421 | DEBUG_l( Perl_deb(aTHX_ "(poptolabel(): found label at cx=%ld %s)\n", (long)i, label)); |
a0d0e21e | 1422 | return i; |
7e8f1eac | 1423 | } |
a0d0e21e LW |
1424 | } |
1425 | } | |
1426 | return i; | |
1427 | } | |
1428 | ||
0d863452 RH |
1429 | |
1430 | ||
e50aee73 | 1431 | I32 |
864dbfa3 | 1432 | Perl_dowantarray(pTHX) |
e50aee73 | 1433 | { |
97aff369 | 1434 | dVAR; |
f54cb97a | 1435 | const I32 gimme = block_gimme(); |
54310121 | 1436 | return (gimme == G_VOID) ? G_SCALAR : gimme; |
1437 | } | |
1438 | ||
1439 | I32 | |
864dbfa3 | 1440 | Perl_block_gimme(pTHX) |
54310121 | 1441 | { |
97aff369 | 1442 | dVAR; |
06b5626a | 1443 | const I32 cxix = dopoptosub(cxstack_ix); |
e50aee73 | 1444 | if (cxix < 0) |
46fc3d4c | 1445 | return G_VOID; |
e50aee73 | 1446 | |
54310121 | 1447 | switch (cxstack[cxix].blk_gimme) { |
d2719217 GS |
1448 | case G_VOID: |
1449 | return G_VOID; | |
54310121 | 1450 | case G_SCALAR: |
e50aee73 | 1451 | return G_SCALAR; |
54310121 | 1452 | case G_ARRAY: |
1453 | return G_ARRAY; | |
1454 | default: | |
cea2e8a9 | 1455 | Perl_croak(aTHX_ "panic: bad gimme: %d\n", cxstack[cxix].blk_gimme); |
d2719217 GS |
1456 | /* NOTREACHED */ |
1457 | return 0; | |
54310121 | 1458 | } |
e50aee73 AD |
1459 | } |
1460 | ||
78f9721b SM |
1461 | I32 |
1462 | Perl_is_lvalue_sub(pTHX) | |
1463 | { | |
97aff369 | 1464 | dVAR; |
06b5626a | 1465 | const I32 cxix = dopoptosub(cxstack_ix); |
78f9721b SM |
1466 | assert(cxix >= 0); /* We should only be called from inside subs */ |
1467 | ||
bafb2adc NC |
1468 | if (CxLVAL(cxstack + cxix) && CvLVALUE(cxstack[cxix].blk_sub.cv)) |
1469 | return CxLVAL(cxstack + cxix); | |
78f9721b SM |
1470 | else |
1471 | return 0; | |
1472 | } | |
1473 | ||
777d9014 FC |
1474 | /* only used by PUSHSUB */ |
1475 | I32 | |
1476 | Perl_was_lvalue_sub(pTHX) | |
1477 | { | |
1478 | dVAR; | |
1479 | const I32 cxix = dopoptosub(cxstack_ix-1); | |
1480 | assert(cxix >= 0); /* We should only be called from inside subs */ | |
1481 | ||
1482 | if (CxLVAL(cxstack + cxix) && CvLVALUE(cxstack[cxix].blk_sub.cv)) | |
1483 | return CxLVAL(cxstack + cxix); | |
1484 | else | |
1485 | return 0; | |
1486 | } | |
1487 | ||
76e3520e | 1488 | STATIC I32 |
901017d6 | 1489 | S_dopoptosub_at(pTHX_ const PERL_CONTEXT *cxstk, I32 startingblock) |
2c375eb9 | 1490 | { |
97aff369 | 1491 | dVAR; |
a0d0e21e | 1492 | I32 i; |
7918f24d NC |
1493 | |
1494 | PERL_ARGS_ASSERT_DOPOPTOSUB_AT; | |
1495 | ||
a0d0e21e | 1496 | for (i = startingblock; i >= 0; i--) { |
901017d6 | 1497 | register const PERL_CONTEXT * const cx = &cxstk[i]; |
6b35e009 | 1498 | switch (CxTYPE(cx)) { |
a0d0e21e LW |
1499 | default: |
1500 | continue; | |
1501 | case CXt_EVAL: | |
1502 | case CXt_SUB: | |
7766f137 | 1503 | case CXt_FORMAT: |
1c98cc53 | 1504 | DEBUG_l( Perl_deb(aTHX_ "(dopoptosub_at(): found sub at cx=%ld)\n", (long)i)); |
a0d0e21e LW |
1505 | return i; |
1506 | } | |
1507 | } | |
1508 | return i; | |
1509 | } | |
1510 | ||
76e3520e | 1511 | STATIC I32 |
cea2e8a9 | 1512 | S_dopoptoeval(pTHX_ I32 startingblock) |
a0d0e21e | 1513 | { |
97aff369 | 1514 | dVAR; |
a0d0e21e | 1515 | I32 i; |
a0d0e21e | 1516 | for (i = startingblock; i >= 0; i--) { |
06b5626a | 1517 | register const PERL_CONTEXT *cx = &cxstack[i]; |
6b35e009 | 1518 | switch (CxTYPE(cx)) { |
a0d0e21e LW |
1519 | default: |
1520 | continue; | |
1521 | case CXt_EVAL: | |
1c98cc53 | 1522 | DEBUG_l( Perl_deb(aTHX_ "(dopoptoeval(): found eval at cx=%ld)\n", (long)i)); |
a0d0e21e LW |
1523 | return i; |
1524 | } | |
1525 | } | |
1526 | return i; | |
1527 | } | |
1528 | ||
76e3520e | 1529 | STATIC I32 |
cea2e8a9 | 1530 | S_dopoptoloop(pTHX_ I32 startingblock) |
a0d0e21e | 1531 | { |
97aff369 | 1532 | dVAR; |
a0d0e21e | 1533 | I32 i; |
a0d0e21e | 1534 | for (i = startingblock; i >= 0; i--) { |
901017d6 | 1535 | register const PERL_CONTEXT * const cx = &cxstack[i]; |
6b35e009 | 1536 | switch (CxTYPE(cx)) { |
a0d0e21e | 1537 | case CXt_SUBST: |
a0d0e21e | 1538 | case CXt_SUB: |
7766f137 | 1539 | case CXt_FORMAT: |
a0d0e21e | 1540 | case CXt_EVAL: |
0a753a76 | 1541 | case CXt_NULL: |
dcbac5bb | 1542 | /* diag_listed_as: Exiting subroutine via %s */ |
a2a5de95 NC |
1543 | Perl_ck_warner(aTHX_ packWARN(WARN_EXITING), "Exiting %s via %s", |
1544 | context_name[CxTYPE(cx)], OP_NAME(PL_op)); | |
515afda2 NC |
1545 | if ((CxTYPE(cx)) == CXt_NULL) |
1546 | return -1; | |
1547 | break; | |
c6fdafd0 | 1548 | case CXt_LOOP_LAZYIV: |
d01136d6 | 1549 | case CXt_LOOP_LAZYSV: |
3b719c58 NC |
1550 | case CXt_LOOP_FOR: |
1551 | case CXt_LOOP_PLAIN: | |
1c98cc53 | 1552 | DEBUG_l( Perl_deb(aTHX_ "(dopoptoloop(): found loop at cx=%ld)\n", (long)i)); |
a0d0e21e LW |
1553 | return i; |
1554 | } | |
1555 | } | |
1556 | return i; | |
1557 | } | |
1558 | ||
0d863452 RH |
1559 | STATIC I32 |
1560 | S_dopoptogiven(pTHX_ I32 startingblock) | |
1561 | { | |
97aff369 | 1562 | dVAR; |
0d863452 RH |
1563 | I32 i; |
1564 | for (i = startingblock; i >= 0; i--) { | |
1565 | register const PERL_CONTEXT *cx = &cxstack[i]; | |
1566 | switch (CxTYPE(cx)) { | |
1567 | default: | |
1568 | continue; | |
1569 | case CXt_GIVEN: | |
1c98cc53 | 1570 | DEBUG_l( Perl_deb(aTHX_ "(dopoptogiven(): found given at cx=%ld)\n", (long)i)); |
0d863452 | 1571 | return i; |
3b719c58 NC |
1572 | case CXt_LOOP_PLAIN: |
1573 | assert(!CxFOREACHDEF(cx)); | |
1574 | break; | |
c6fdafd0 | 1575 | case CXt_LOOP_LAZYIV: |
d01136d6 | 1576 | case CXt_LOOP_LAZYSV: |
3b719c58 | 1577 | case CXt_LOOP_FOR: |
0d863452 | 1578 | if (CxFOREACHDEF(cx)) { |
1c98cc53 | 1579 | DEBUG_l( Perl_deb(aTHX_ "(dopoptogiven(): found foreach at cx=%ld)\n", (long)i)); |
0d863452 RH |
1580 | return i; |
1581 | } | |
1582 | } | |
1583 | } | |
1584 | return i; | |
1585 | } | |
1586 | ||
1587 | STATIC I32 | |
1588 | S_dopoptowhen(pTHX_ I32 startingblock) | |
1589 | { | |
97aff369 | 1590 | dVAR; |
0d863452 RH |
1591 | I32 i; |
1592 | for (i = startingblock; i >= 0; i--) { | |
1593 | register const PERL_CONTEXT *cx = &cxstack[i]; | |
1594 | switch (CxTYPE(cx)) { | |
1595 | default: | |
1596 | continue; | |
1597 | case CXt_WHEN: | |
1c98cc53 | 1598 | DEBUG_l( Perl_deb(aTHX_ "(dopoptowhen(): found when at cx=%ld)\n", (long)i)); |
0d863452 RH |
1599 | return i; |
1600 | } | |
1601 | } | |
1602 | return i; | |
1603 | } | |
1604 | ||
a0d0e21e | 1605 | void |
864dbfa3 | 1606 | Perl_dounwind(pTHX_ I32 cxix) |
a0d0e21e | 1607 | { |
97aff369 | 1608 | dVAR; |
a0d0e21e LW |
1609 | I32 optype; |
1610 | ||
f144f1e3 DM |
1611 | if (!PL_curstackinfo) /* can happen if die during thread cloning */ |
1612 | return; | |
1613 | ||
a0d0e21e | 1614 | while (cxstack_ix > cxix) { |
b0d9ce38 | 1615 | SV *sv; |
06b5626a | 1616 | register PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
1c98cc53 | 1617 | DEBUG_CX("UNWIND"); \ |
a0d0e21e | 1618 | /* Note: we don't need to restore the base context info till the end. */ |
6b35e009 | 1619 | switch (CxTYPE(cx)) { |
c90c0ff4 | 1620 | case CXt_SUBST: |
1621 | POPSUBST(cx); | |
1622 | continue; /* not break */ | |
a0d0e21e | 1623 | case CXt_SUB: |
b0d9ce38 GS |
1624 | POPSUB(cx,sv); |
1625 | LEAVESUB(sv); | |
a0d0e21e LW |
1626 | break; |
1627 | case CXt_EVAL: | |
1628 | POPEVAL(cx); | |
1629 | break; | |
c6fdafd0 | 1630 | case CXt_LOOP_LAZYIV: |
d01136d6 | 1631 | case CXt_LOOP_LAZYSV: |
3b719c58 NC |
1632 | case CXt_LOOP_FOR: |
1633 | case CXt_LOOP_PLAIN: | |
a0d0e21e LW |
1634 | POPLOOP(cx); |
1635 | break; | |
0a753a76 | 1636 | case CXt_NULL: |
a0d0e21e | 1637 | break; |
7766f137 GS |
1638 | case CXt_FORMAT: |
1639 | POPFORMAT(cx); | |
1640 | break; | |
a0d0e21e | 1641 | } |
c90c0ff4 | 1642 | cxstack_ix--; |
a0d0e21e | 1643 | } |
1b6737cc | 1644 | PERL_UNUSED_VAR(optype); |
a0d0e21e LW |
1645 | } |
1646 | ||
5a844595 GS |
1647 | void |
1648 | Perl_qerror(pTHX_ SV *err) | |
1649 | { | |
97aff369 | 1650 | dVAR; |
7918f24d NC |
1651 | |
1652 | PERL_ARGS_ASSERT_QERROR; | |
1653 | ||
6b2fb389 DM |
1654 | if (PL_in_eval) { |
1655 | if (PL_in_eval & EVAL_KEEPERR) { | |
ecad31f0 BF |
1656 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), "\t(in cleanup) %"SVf, |
1657 | SVfARG(err)); | |
6b2fb389 DM |
1658 | } |
1659 | else | |
1660 | sv_catsv(ERRSV, err); | |
1661 | } | |
5a844595 GS |
1662 | else if (PL_errors) |
1663 | sv_catsv(PL_errors, err); | |
1664 | else | |
be2597df | 1665 | Perl_warn(aTHX_ "%"SVf, SVfARG(err)); |
13765c85 DM |
1666 | if (PL_parser) |
1667 | ++PL_parser->error_count; | |
5a844595 GS |
1668 | } |
1669 | ||
bb4c52e0 | 1670 | void |
c5df3096 | 1671 | Perl_die_unwind(pTHX_ SV *msv) |
a0d0e21e | 1672 | { |
27da23d5 | 1673 | dVAR; |
c5df3096 | 1674 | SV *exceptsv = sv_mortalcopy(msv); |
96d9b9cd | 1675 | U8 in_eval = PL_in_eval; |
c5df3096 | 1676 | PERL_ARGS_ASSERT_DIE_UNWIND; |
87582a92 | 1677 | |
96d9b9cd | 1678 | if (in_eval) { |
a0d0e21e | 1679 | I32 cxix; |
a0d0e21e | 1680 | I32 gimme; |
a0d0e21e | 1681 | |
22a30693 Z |
1682 | /* |
1683 | * Historically, perl used to set ERRSV ($@) early in the die | |
1684 | * process and rely on it not getting clobbered during unwinding. | |
1685 | * That sucked, because it was liable to get clobbered, so the | |
1686 | * setting of ERRSV used to emit the exception from eval{} has | |
1687 | * been moved to much later, after unwinding (see just before | |
1688 | * JMPENV_JUMP below). However, some modules were relying on the | |
1689 | * early setting, by examining $@ during unwinding to use it as | |
1690 | * a flag indicating whether the current unwinding was caused by | |
1691 | * an exception. It was never a reliable flag for that purpose, | |
1692 | * being totally open to false positives even without actual | |
1693 | * clobberage, but was useful enough for production code to | |
1694 | * semantically rely on it. | |
1695 | * | |
1696 | * We'd like to have a proper introspective interface that | |
1697 | * explicitly describes the reason for whatever unwinding | |
1698 | * operations are currently in progress, so that those modules | |
1699 | * work reliably and $@ isn't further overloaded. But we don't | |
1700 | * have one yet. In its absence, as a stopgap measure, ERRSV is | |
1701 | * now *additionally* set here, before unwinding, to serve as the | |
1702 | * (unreliable) flag that it used to. | |
1703 | * | |
1704 | * This behaviour is temporary, and should be removed when a | |
1705 | * proper way to detect exceptional unwinding has been developed. | |
1706 | * As of 2010-12, the authors of modules relying on the hack | |
1707 | * are aware of the issue, because the modules failed on | |
1708 | * perls 5.13.{1..7} which had late setting of $@ without this | |
1709 | * early-setting hack. | |
1710 | */ | |
1711 | if (!(in_eval & EVAL_KEEPERR)) { | |
1712 | SvTEMP_off(exceptsv); | |
1713 | sv_setsv(ERRSV, exceptsv); | |
1714 | } | |
1715 | ||
5a844595 GS |
1716 | while ((cxix = dopoptoeval(cxstack_ix)) < 0 |
1717 | && PL_curstackinfo->si_prev) | |
1718 | { | |
bac4b2ad | 1719 | dounwind(-1); |
d3acc0f7 | 1720 | POPSTACK; |
bac4b2ad | 1721 | } |
e336de0d | 1722 | |
a0d0e21e LW |
1723 | if (cxix >= 0) { |
1724 | I32 optype; | |
b6494f15 | 1725 | SV *namesv; |
35a4481c | 1726 | register PERL_CONTEXT *cx; |
901017d6 | 1727 | SV **newsp; |
8f89e5a9 Z |
1728 | COP *oldcop; |
1729 | JMPENV *restartjmpenv; | |
1730 | OP *restartop; | |
a0d0e21e LW |
1731 | |
1732 | if (cxix < cxstack_ix) | |
1733 | dounwind(cxix); | |
1734 | ||
3280af22 | 1735 | POPBLOCK(cx,PL_curpm); |
6b35e009 | 1736 | if (CxTYPE(cx) != CXt_EVAL) { |
7d0994e0 | 1737 | STRLEN msglen; |
96d9b9cd | 1738 | const char* message = SvPVx_const(exceptsv, msglen); |
10edeb5d | 1739 | PerlIO_write(Perl_error_log, (const char *)"panic: die ", 11); |
bf49b057 | 1740 | PerlIO_write(Perl_error_log, message, msglen); |
a0d0e21e LW |
1741 | my_exit(1); |
1742 | } | |
1743 | POPEVAL(cx); | |
b6494f15 | 1744 | namesv = cx->blk_eval.old_namesv; |
8f89e5a9 Z |
1745 | oldcop = cx->blk_oldcop; |
1746 | restartjmpenv = cx->blk_eval.cur_top_env; | |
1747 | restartop = cx->blk_eval.retop; | |
a0d0e21e LW |
1748 | |
1749 | if (gimme == G_SCALAR) | |
3280af22 NIS |
1750 | *++newsp = &PL_sv_undef; |
1751 | PL_stack_sp = newsp; | |
a0d0e21e LW |
1752 | |
1753 | LEAVE; | |
748a9306 | 1754 | |
7fb6a879 GS |
1755 | /* LEAVE could clobber PL_curcop (see save_re_context()) |
1756 | * XXX it might be better to find a way to avoid messing with | |
1757 | * PL_curcop in save_re_context() instead, but this is a more | |
1758 | * minimal fix --GSAR */ | |
8f89e5a9 | 1759 | PL_curcop = oldcop; |
7fb6a879 | 1760 | |
7a2e2cd6 | 1761 | if (optype == OP_REQUIRE) { |
b6494f15 | 1762 | (void)hv_store(GvHVn(PL_incgv), |
ecad31f0 | 1763 | SvPVX_const(namesv), |
c60dbbc3 | 1764 | SvUTF8(namesv) ? -(I32)SvCUR(namesv) : (I32)SvCUR(namesv), |
27bcc0a7 | 1765 | &PL_sv_undef, 0); |
27e90453 DM |
1766 | /* note that unlike pp_entereval, pp_require isn't |
1767 | * supposed to trap errors. So now that we've popped the | |
1768 | * EVAL that pp_require pushed, and processed the error | |
1769 | * message, rethrow the error */ | |
ecad31f0 BF |
1770 | Perl_croak(aTHX_ "%"SVf"Compilation failed in require", |
1771 | SVfARG(exceptsv ? exceptsv : newSVpvs_flags("Unknown error\n", | |
1772 | SVs_TEMP))); | |
7a2e2cd6 | 1773 | } |
c5df3096 | 1774 | if (in_eval & EVAL_KEEPERR) { |
ecad31f0 BF |
1775 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), "\t(in cleanup) %"SVf, |
1776 | SVfARG(exceptsv)); | |
96d9b9cd Z |
1777 | } |
1778 | else { | |
1779 | sv_setsv(ERRSV, exceptsv); | |
1780 | } | |
8f89e5a9 Z |
1781 | PL_restartjmpenv = restartjmpenv; |
1782 | PL_restartop = restartop; | |
bb4c52e0 GG |
1783 | JMPENV_JUMP(3); |
1784 | /* NOTREACHED */ | |
a0d0e21e LW |
1785 | } |
1786 | } | |
87582a92 | 1787 | |
96d9b9cd | 1788 | write_to_stderr(exceptsv); |
f86702cc | 1789 | my_failure_exit(); |
1790 | /* NOTREACHED */ | |
a0d0e21e LW |
1791 | } |
1792 | ||
1793 | PP(pp_xor) | |
1794 | { | |
97aff369 | 1795 | dVAR; dSP; dPOPTOPssrl; |
a0d0e21e LW |
1796 | if (SvTRUE(left) != SvTRUE(right)) |
1797 | RETSETYES; | |
1798 | else | |
1799 | RETSETNO; | |
1800 | } | |
1801 | ||
8dff4fc5 BM |
1802 | /* |
1803 | =for apidoc caller_cx | |
1804 | ||
1805 | The XSUB-writer's equivalent of L<caller()|perlfunc/caller>. The | |
1806 | returned C<PERL_CONTEXT> structure can be interrogated to find all the | |
1807 | information returned to Perl by C<caller>. Note that XSUBs don't get a | |
1808 | stack frame, so C<caller_cx(0, NULL)> will return information for the | |
1809 | immediately-surrounding Perl code. | |
1810 | ||
1811 | This function skips over the automatic calls to C<&DB::sub> made on the | |
1812 | behalf of the debugger. If the stack frame requested was a sub called by | |
1813 | C<DB::sub>, the return value will be the frame for the call to | |
1814 | C<DB::sub>, since that has the correct line number/etc. for the call | |
1815 | site. If I<dbcxp> is non-C<NULL>, it will be set to a pointer to the | |
1816 | frame for the sub call itself. | |
1817 | ||
1818 | =cut | |
1819 | */ | |
1820 | ||
1821 | const PERL_CONTEXT * | |
1822 | Perl_caller_cx(pTHX_ I32 count, const PERL_CONTEXT **dbcxp) | |
a0d0e21e | 1823 | { |
a0d0e21e | 1824 | register I32 cxix = dopoptosub(cxstack_ix); |
901017d6 AL |
1825 | register const PERL_CONTEXT *cx; |
1826 | register const PERL_CONTEXT *ccstack = cxstack; | |
1827 | const PERL_SI *top_si = PL_curstackinfo; | |
27d41816 | 1828 | |
a0d0e21e | 1829 | for (;;) { |
2c375eb9 GS |
1830 | /* we may be in a higher stacklevel, so dig down deeper */ |
1831 | while (cxix < 0 && top_si->si_type != PERLSI_MAIN) { | |
1832 | top_si = top_si->si_prev; | |
1833 | ccstack = top_si->si_cxstack; | |
1834 | cxix = dopoptosub_at(ccstack, top_si->si_cxix); | |
1835 | } | |
8dff4fc5 BM |
1836 | if (cxix < 0) |
1837 | return NULL; | |
f2a7f298 DG |
1838 | /* caller() should not report the automatic calls to &DB::sub */ |
1839 | if (PL_DBsub && GvCV(PL_DBsub) && cxix >= 0 && | |
3280af22 | 1840 | ccstack[cxix].blk_sub.cv == GvCV(PL_DBsub)) |
a0d0e21e LW |
1841 | count++; |
1842 | if (!count--) | |
1843 | break; | |
2c375eb9 | 1844 | cxix = dopoptosub_at(ccstack, cxix - 1); |
a0d0e21e | 1845 | } |
2c375eb9 GS |
1846 | |
1847 | cx = &ccstack[cxix]; | |
8dff4fc5 BM |
1848 | if (dbcxp) *dbcxp = cx; |
1849 | ||
7766f137 | 1850 | if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) { |
f54cb97a | 1851 | const I32 dbcxix = dopoptosub_at(ccstack, cxix - 1); |
2c375eb9 | 1852 | /* We expect that ccstack[dbcxix] is CXt_SUB, anyway, the |
06a5b730 | 1853 | field below is defined for any cx. */ |
f2a7f298 DG |
1854 | /* caller() should not report the automatic calls to &DB::sub */ |
1855 | if (PL_DBsub && GvCV(PL_DBsub) && dbcxix >= 0 && ccstack[dbcxix].blk_sub.cv == GvCV(PL_DBsub)) | |
2c375eb9 | 1856 | cx = &ccstack[dbcxix]; |
06a5b730 | 1857 | } |
1858 | ||
8dff4fc5 BM |
1859 | return cx; |
1860 | } | |
1861 | ||
1862 | PP(pp_caller) | |
1863 | { | |
1864 | dVAR; | |
1865 | dSP; | |
1866 | register const PERL_CONTEXT *cx; | |
1867 | const PERL_CONTEXT *dbcx; | |
1868 | I32 gimme; | |
d527ce7c | 1869 | const HEK *stash_hek; |
8dff4fc5 | 1870 | I32 count = 0; |
ce0b554b | 1871 | bool has_arg = MAXARG && TOPs; |
8dff4fc5 | 1872 | |
ce0b554b FC |
1873 | if (MAXARG) { |
1874 | if (has_arg) | |
8dff4fc5 | 1875 | count = POPi; |
ce0b554b FC |
1876 | else (void)POPs; |
1877 | } | |
8dff4fc5 | 1878 | |
ce0b554b | 1879 | cx = caller_cx(count + !!(PL_op->op_private & OPpOFFBYONE), &dbcx); |
8dff4fc5 BM |
1880 | if (!cx) { |
1881 | if (GIMME != G_ARRAY) { | |
1882 | EXTEND(SP, 1); | |
1883 | RETPUSHUNDEF; | |
1884 | } | |
1885 | RETURN; | |
1886 | } | |
1887 | ||
d527ce7c | 1888 | stash_hek = HvNAME_HEK((HV*)CopSTASH(cx->blk_oldcop)); |
a0d0e21e | 1889 | if (GIMME != G_ARRAY) { |
27d41816 | 1890 | EXTEND(SP, 1); |
d527ce7c | 1891 | if (!stash_hek) |
3280af22 | 1892 | PUSHs(&PL_sv_undef); |
49d8d3a1 MB |
1893 | else { |
1894 | dTARGET; | |
d527ce7c | 1895 | sv_sethek(TARG, stash_hek); |
49d8d3a1 MB |
1896 | PUSHs(TARG); |
1897 | } | |
a0d0e21e LW |
1898 | RETURN; |
1899 | } | |
a0d0e21e | 1900 | |
b3ca2e83 | 1901 | EXTEND(SP, 11); |
27d41816 | 1902 | |
d527ce7c | 1903 | if (!stash_hek) |
3280af22 | 1904 | PUSHs(&PL_sv_undef); |
d527ce7c BF |
1905 | else { |
1906 | dTARGET; | |
1907 | sv_sethek(TARG, stash_hek); | |
1908 | PUSHTARG; | |
1909 | } | |
6e449a3a MHM |
1910 | mPUSHs(newSVpv(OutCopFILE(cx->blk_oldcop), 0)); |
1911 | mPUSHi((I32)CopLINE(cx->blk_oldcop)); | |
ce0b554b | 1912 | if (!has_arg) |
a0d0e21e | 1913 | RETURN; |
7766f137 | 1914 | if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) { |
8dff4fc5 | 1915 | GV * const cvgv = CvGV(dbcx->blk_sub.cv); |
7766f137 | 1916 | /* So is ccstack[dbcxix]. */ |
07b8c804 | 1917 | if (isGV(cvgv)) { |
561b68a9 | 1918 | SV * const sv = newSV(0); |
c445ea15 | 1919 | gv_efullname3(sv, cvgv, NULL); |
6e449a3a | 1920 | mPUSHs(sv); |
bf38a478 | 1921 | PUSHs(boolSV(CxHASARGS(cx))); |
07b8c804 RGS |
1922 | } |
1923 | else { | |
84bafc02 | 1924 | PUSHs(newSVpvs_flags("(unknown)", SVs_TEMP)); |
bf38a478 | 1925 | PUSHs(boolSV(CxHASARGS(cx))); |
07b8c804 | 1926 | } |
a0d0e21e LW |
1927 | } |
1928 | else { | |
84bafc02 | 1929 | PUSHs(newSVpvs_flags("(eval)", SVs_TEMP)); |
6e449a3a | 1930 | mPUSHi(0); |
a0d0e21e | 1931 | } |
54310121 | 1932 | gimme = (I32)cx->blk_gimme; |
1933 | if (gimme == G_VOID) | |
3280af22 | 1934 | PUSHs(&PL_sv_undef); |
54310121 | 1935 | else |
98625aca | 1936 | PUSHs(boolSV((gimme & G_WANT) == G_ARRAY)); |
6b35e009 | 1937 | if (CxTYPE(cx) == CXt_EVAL) { |
811a4de9 | 1938 | /* eval STRING */ |
85a64632 | 1939 | if (CxOLD_OP_TYPE(cx) == OP_ENTEREVAL) { |
4633a7c4 | 1940 | PUSHs(cx->blk_eval.cur_text); |
3280af22 | 1941 | PUSHs(&PL_sv_no); |
0f79a09d | 1942 | } |
811a4de9 | 1943 | /* require */ |
0f79a09d | 1944 | else if (cx->blk_eval.old_namesv) { |
6e449a3a | 1945 | mPUSHs(newSVsv(cx->blk_eval.old_namesv)); |
3280af22 | 1946 | PUSHs(&PL_sv_yes); |
06a5b730 | 1947 | } |
811a4de9 GS |
1948 | /* eval BLOCK (try blocks have old_namesv == 0) */ |
1949 | else { | |
1950 | PUSHs(&PL_sv_undef); | |
1951 | PUSHs(&PL_sv_undef); | |
1952 | } | |
4633a7c4 | 1953 | } |
a682de96 GS |
1954 | else { |
1955 | PUSHs(&PL_sv_undef); | |
1956 | PUSHs(&PL_sv_undef); | |
1957 | } | |
bafb2adc | 1958 | if (CxTYPE(cx) == CXt_SUB && CxHASARGS(cx) |
ed094faf | 1959 | && CopSTASH_eq(PL_curcop, PL_debstash)) |
4633a7c4 | 1960 | { |
66a1b24b AL |
1961 | AV * const ary = cx->blk_sub.argarray; |
1962 | const int off = AvARRAY(ary) - AvALLOC(ary); | |
a0d0e21e | 1963 | |
e1a80902 | 1964 | Perl_init_dbargs(aTHX); |
a0d0e21e | 1965 | |
3280af22 NIS |
1966 | if (AvMAX(PL_dbargs) < AvFILLp(ary) + off) |
1967 | av_extend(PL_dbargs, AvFILLp(ary) + off); | |
1968 | Copy(AvALLOC(ary), AvARRAY(PL_dbargs), AvFILLp(ary) + 1 + off, SV*); | |
1969 | AvFILLp(PL_dbargs) = AvFILLp(ary) + off; | |
a0d0e21e | 1970 | } |
f3aa04c2 GS |
1971 | /* XXX only hints propagated via op_private are currently |
1972 | * visible (others are not easily accessible, since they | |
1973 | * use the global PL_hints) */ | |
6e449a3a | 1974 | mPUSHi(CopHINTS_get(cx->blk_oldcop)); |
e476b1b5 GS |
1975 | { |
1976 | SV * mask ; | |
72dc9ed5 | 1977 | STRLEN * const old_warnings = cx->blk_oldcop->cop_warnings ; |
114bafba | 1978 | |
ac27b0f5 | 1979 | if (old_warnings == pWARN_NONE || |
114bafba | 1980 | (old_warnings == pWARN_STD && (PL_dowarn & G_WARN_ON) == 0)) |
e476b1b5 | 1981 | mask = newSVpvn(WARN_NONEstring, WARNsize) ; |
ac27b0f5 | 1982 | else if (old_warnings == pWARN_ALL || |
75b6c4ca RGS |
1983 | (old_warnings == pWARN_STD && PL_dowarn & G_WARN_ON)) { |
1984 | /* Get the bit mask for $warnings::Bits{all}, because | |
1985 | * it could have been extended by warnings::register */ | |
1986 | SV **bits_all; | |
6673a63c | 1987 | HV * const bits = get_hv("warnings::Bits", 0); |
017a3ce5 | 1988 | if (bits && (bits_all=hv_fetchs(bits, "all", FALSE))) { |
75b6c4ca RGS |
1989 | mask = newSVsv(*bits_all); |
1990 | } | |
1991 | else { | |
1992 | mask = newSVpvn(WARN_ALLstring, WARNsize) ; | |
1993 | } | |
1994 | } | |
e476b1b5 | 1995 | else |
72dc9ed5 | 1996 | mask = newSVpvn((char *) (old_warnings + 1), old_warnings[0]); |
6e449a3a | 1997 | mPUSHs(mask); |
e476b1b5 | 1998 | } |
b3ca2e83 | 1999 | |
c28fe1ec | 2000 | PUSHs(cx->blk_oldcop->cop_hints_hash ? |
20439bc7 | 2001 | sv_2mortal(newRV_noinc(MUTABLE_SV(cop_hints_2hv(cx->blk_oldcop, 0)))) |
b3ca2e83 | 2002 | : &PL_sv_undef); |
a0d0e21e LW |
2003 | RETURN; |
2004 | } | |
2005 | ||
a0d0e21e LW |
2006 | PP(pp_reset) |
2007 | { | |
97aff369 | 2008 | dVAR; |
39644a26 | 2009 | dSP; |
f650fa72 FC |
2010 | const char * const tmps = |
2011 | (MAXARG < 1 || (!TOPs && !POPs)) ? (const char *)"" : POPpconstx; | |
11faa288 | 2012 | sv_reset(tmps, CopSTASH(PL_curcop)); |
3280af22 | 2013 | PUSHs(&PL_sv_yes); |
a0d0e21e LW |
2014 | RETURN; |
2015 | } | |
2016 | ||
dd2155a4 DM |
2017 | /* like pp_nextstate, but used instead when the debugger is active */ |
2018 | ||
a0d0e21e LW |
2019 | PP(pp_dbstate) |
2020 | { | |
27da23d5 | 2021 | dVAR; |
533c011a | 2022 | PL_curcop = (COP*)PL_op; |
a0d0e21e | 2023 | TAINT_NOT; /* Each statement is presumed innocent */ |
3280af22 | 2024 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e LW |
2025 | FREETMPS; |
2026 | ||
f410a211 NC |
2027 | PERL_ASYNC_CHECK(); |
2028 | ||
5df8de69 DM |
2029 | if (PL_op->op_flags & OPf_SPECIAL /* breakpoint */ |
2030 | || SvIV(PL_DBsingle) || SvIV(PL_DBsignal) || SvIV(PL_DBtrace)) | |
a0d0e21e | 2031 | { |
39644a26 | 2032 | dSP; |
c09156bb | 2033 | register PERL_CONTEXT *cx; |
f54cb97a | 2034 | const I32 gimme = G_ARRAY; |
eb160463 | 2035 | U8 hasargs; |
0bd48802 AL |
2036 | GV * const gv = PL_DBgv; |
2037 | register CV * const cv = GvCV(gv); | |
a0d0e21e | 2038 | |
a0d0e21e | 2039 | if (!cv) |
cea2e8a9 | 2040 | DIE(aTHX_ "No DB::DB routine defined"); |
a0d0e21e | 2041 | |
aea4f609 DM |
2042 | if (CvDEPTH(cv) >= 1 && !(PL_debug & DEBUG_DB_RECURSE_FLAG)) |
2043 | /* don't do recursive DB::DB call */ | |
a0d0e21e | 2044 | return NORMAL; |
748a9306 | 2045 | |
a57c6685 | 2046 | ENTER; |
4633a7c4 LW |
2047 | SAVETMPS; |
2048 | ||
3280af22 | 2049 | SAVEI32(PL_debug); |
55497cff | 2050 | SAVESTACK_POS(); |
3280af22 | 2051 | PL_debug = 0; |
748a9306 | 2052 | hasargs = 0; |
924508f0 | 2053 | SPAGAIN; |
748a9306 | 2054 | |
aed2304a | 2055 | if (CvISXSUB(cv)) { |
c127bd3a SF |
2056 | CvDEPTH(cv)++; |
2057 | PUSHMARK(SP); | |
2058 | (void)(*CvXSUB(cv))(aTHX_ cv); | |
2059 | CvDEPTH(cv)--; | |
2060 | FREETMPS; | |
a57c6685 | 2061 | LEAVE; |
c127bd3a SF |
2062 | return NORMAL; |
2063 | } | |
2064 | else { | |
2065 | PUSHBLOCK(cx, CXt_SUB, SP); | |
2066 | PUSHSUB_DB(cx); | |
2067 | cx->blk_sub.retop = PL_op->op_next; | |
2068 | CvDEPTH(cv)++; | |
2069 | SAVECOMPPAD(); | |
2070 | PAD_SET_CUR_NOSAVE(CvPADLIST(cv), 1); | |
2071 | RETURNOP(CvSTART(cv)); | |
2072 | } | |
a0d0e21e LW |
2073 | } |
2074 | else | |
2075 | return NORMAL; | |
2076 | } | |
2077 | ||
b9d76716 VP |
2078 | STATIC SV ** |
2079 | S_adjust_stack_on_leave(pTHX_ SV **newsp, SV **sp, SV **mark, I32 gimme, U32 flags) | |
2080 | { | |
9a214eec | 2081 | bool padtmp = 0; |
b9d76716 VP |
2082 | PERL_ARGS_ASSERT_ADJUST_STACK_ON_LEAVE; |
2083 | ||
9a214eec DM |
2084 | if (flags & SVs_PADTMP) { |
2085 | flags &= ~SVs_PADTMP; | |
2086 | padtmp = 1; | |
2087 | } | |
b9d76716 VP |
2088 | if (gimme == G_SCALAR) { |
2089 | if (MARK < SP) | |
9a214eec DM |
2090 | *++newsp = ((SvFLAGS(*SP) & flags) || (padtmp && SvPADTMP(*SP))) |
2091 | ? *SP : sv_mortalcopy(*SP); | |
b9d76716 VP |
2092 | else { |
2093 | /* MEXTEND() only updates MARK, so reuse it instead of newsp. */ | |
2094 | MARK = newsp; | |
2095 | MEXTEND(MARK, 1); | |
2096 | *++MARK = &PL_sv_undef; | |
2097 | return MARK; | |
2098 | } | |
2099 | } | |
2100 | else if (gimme == G_ARRAY) { | |
2101 | /* in case LEAVE wipes old return values */ | |
2102 | while (++MARK <= SP) { | |
9a214eec | 2103 | if ((SvFLAGS(*MARK) & flags) || (padtmp && SvPADTMP(*MARK))) |
b9d76716 VP |
2104 | *++newsp = *MARK; |
2105 | else { | |
2106 | *++newsp = sv_mortalcopy(*MARK); | |
2107 | TAINT_NOT; /* Each item is independent */ | |
2108 | } | |
2109 | } | |
2110 | /* When this function was called with MARK == newsp, we reach this | |
2111 | * point with SP == newsp. */ | |
2112 | } | |
2113 | ||
2114 | return newsp; | |
2115 | } | |
2116 | ||
2b9a6457 VP |
2117 | PP(pp_enter) |
2118 | { | |
2119 | dVAR; dSP; | |
2120 | register PERL_CONTEXT *cx; | |
7c2d9d03 | 2121 | I32 gimme = GIMME_V; |
2b9a6457 VP |
2122 | |
2123 | ENTER_with_name("block"); | |
2124 | ||
2125 | SAVETMPS; | |
2126 | PUSHBLOCK(cx, CXt_BLOCK, SP); | |
2127 | ||
2128 | RETURN; | |
2129 | } | |
2130 | ||
2131 | PP(pp_leave) | |
2132 | { | |
2133 | dVAR; dSP; | |
2134 | register PERL_CONTEXT *cx; | |
2135 | SV **newsp; | |
2136 | PMOP *newpm; | |
2137 | I32 gimme; | |
2138 | ||
2139 | if (PL_op->op_flags & OPf_SPECIAL) { | |
2140 | cx = &cxstack[cxstack_ix]; | |
2141 | cx->blk_oldpm = PL_curpm; /* fake block should preserve $1 et al */ | |
2142 | } | |
2143 | ||
2144 | POPBLOCK(cx,newpm); | |
2145 | ||
2146 | gimme = OP_GIMME(PL_op, (cxstack_ix >= 0) ? gimme : G_SCALAR); | |
2147 | ||
2148 | TAINT_NOT; | |
f02ea43c | 2149 | SP = adjust_stack_on_leave(newsp, SP, newsp, gimme, SVs_PADTMP|SVs_TEMP); |
2b9a6457 VP |
2150 | PL_curpm = newpm; /* Don't pop $1 et al till now */ |
2151 | ||
2152 | LEAVE_with_name("block"); | |
2153 | ||
2154 | RETURN; | |
2155 | } | |
2156 | ||
a0d0e21e LW |
2157 | PP(pp_enteriter) |
2158 | { | |
27da23d5 | 2159 | dVAR; dSP; dMARK; |
c09156bb | 2160 | register PERL_CONTEXT *cx; |
f54cb97a | 2161 | const I32 gimme = GIMME_V; |
df530c37 | 2162 | void *itervar; /* location of the iteration variable */ |
840fe433 | 2163 | U8 cxtype = CXt_LOOP_FOR; |
a0d0e21e | 2164 | |
d343c3ef | 2165 | ENTER_with_name("loop1"); |
4633a7c4 LW |
2166 | SAVETMPS; |
2167 | ||
aafca525 DM |
2168 | if (PL_op->op_targ) { /* "my" variable */ |
2169 | if (PL_op->op_private & OPpLVAL_INTRO) { /* for my $x (...) */ | |
14f338dc DM |
2170 | SvPADSTALE_off(PAD_SVl(PL_op->op_targ)); |
2171 | SAVESETSVFLAGS(PAD_SVl(PL_op->op_targ), | |
2172 | SVs_PADSTALE, SVs_PADSTALE); | |
2173 | } | |
09edbca0 | 2174 | SAVEPADSVANDMORTALIZE(PL_op->op_targ); |
89e00a7c | 2175 | #ifdef USE_ITHREADS |
df530c37 | 2176 | itervar = PL_comppad; |
89e00a7c | 2177 | #else |
aafca525 | 2178 | itervar = &PAD_SVl(PL_op->op_targ); |
7766f137 | 2179 | #endif |
54b9620d | 2180 | } |
aafca525 | 2181 | else { /* symbol table variable */ |
159b6efe | 2182 | GV * const gv = MUTABLE_GV(POPs); |
f83b46a0 DM |
2183 | SV** svp = &GvSV(gv); |
2184 | save_pushptrptr(gv, SvREFCNT_inc(*svp), SAVEt_GVSV); | |
561b68a9 | 2185 | *svp = newSV(0); |
df530c37 | 2186 | itervar = (void *)gv; |
54b9620d | 2187 | } |
4633a7c4 | 2188 | |
0d863452 RH |
2189 | if (PL_op->op_private & OPpITER_DEF) |
2190 | cxtype |= CXp_FOR_DEF; | |
2191 | ||
d343c3ef | 2192 | ENTER_with_name("loop2"); |
a0d0e21e | 2193 | |
7766f137 | 2194 | PUSHBLOCK(cx, cxtype, SP); |
df530c37 | 2195 | PUSHLOOP_FOR(cx, itervar, MARK); |
533c011a | 2196 | if (PL_op->op_flags & OPf_STACKED) { |
d01136d6 BS |
2197 | SV *maybe_ary = POPs; |
2198 | if (SvTYPE(maybe_ary) != SVt_PVAV) { | |
89ea2908 | 2199 | dPOPss; |
d01136d6 | 2200 | SV * const right = maybe_ary; |
984a4bea RD |
2201 | SvGETMAGIC(sv); |
2202 | SvGETMAGIC(right); | |
4fe3f0fa | 2203 | if (RANGE_IS_NUMERIC(sv,right)) { |
d01136d6 | 2204 | cx->cx_type &= ~CXTYPEMASK; |
c6fdafd0 NC |
2205 | cx->cx_type |= CXt_LOOP_LAZYIV; |
2206 | /* Make sure that no-one re-orders cop.h and breaks our | |
2207 | assumptions */ | |
2208 | assert(CxTYPE(cx) == CXt_LOOP_LAZYIV); | |
a2309040 | 2209 | #ifdef NV_PRESERVES_UV |
f52e41ad FC |
2210 | if ((SvOK(sv) && ((SvNV_nomg(sv) < (NV)IV_MIN) || |
2211 | (SvNV_nomg(sv) > (NV)IV_MAX))) | |
a2309040 | 2212 | || |
f52e41ad FC |
2213 | (SvOK(right) && ((SvNV_nomg(right) > (NV)IV_MAX) || |
2214 | (SvNV_nomg(right) < (NV)IV_MIN)))) | |
a2309040 | 2215 | #else |
f52e41ad | 2216 | if ((SvOK(sv) && ((SvNV_nomg(sv) <= (NV)IV_MIN) |
a2309040 | 2217 | || |
f52e41ad FC |
2218 | ((SvNV_nomg(sv) > 0) && |
2219 | ((SvUV_nomg(sv) > (UV)IV_MAX) || | |
2220 | (SvNV_nomg(sv) > (NV)UV_MAX))))) | |
a2309040 | 2221 | || |
f52e41ad | 2222 | (SvOK(right) && ((SvNV_nomg(right) <= (NV)IV_MIN) |
a2309040 | 2223 | || |
f52e41ad FC |
2224 | ((SvNV_nomg(right) > 0) && |
2225 | ((SvUV_nomg(right) > (UV)IV_MAX) || | |
2226 | (SvNV_nomg(right) > (NV)UV_MAX)) | |
2227 | )))) | |
a2309040 | 2228 | #endif |
076d9a11 | 2229 | DIE(aTHX_ "Range iterator outside integer range"); |
f52e41ad FC |
2230 | cx->blk_loop.state_u.lazyiv.cur = SvIV_nomg(sv); |
2231 | cx->blk_loop.state_u.lazyiv.end = SvIV_nomg(right); | |
d4665a05 DM |
2232 | #ifdef DEBUGGING |
2233 | /* for correct -Dstv display */ | |
2234 | cx->blk_oldsp = sp - PL_stack_base; | |
2235 | #endif | |
89ea2908 | 2236 | } |
3f63a782 | 2237 | else { |
d01136d6 BS |
2238 | cx->cx_type &= ~CXTYPEMASK; |
2239 | cx->cx_type |= CXt_LOOP_LAZYSV; | |
2240 | /* Make sure that no-one re-orders cop.h and breaks our | |
2241 | assumptions */ | |
2242 | assert(CxTYPE(cx) == CXt_LOOP_LAZYSV); | |
2243 | cx->blk_loop.state_u.lazysv.cur = newSVsv(sv); | |
2244 | cx->blk_loop.state_u.lazysv.end = right; | |
2245 | SvREFCNT_inc(right); | |
2246 | (void) SvPV_force_nolen(cx->blk_loop.state_u.lazysv.cur); | |
267cc4a8 NC |
2247 | /* This will do the upgrade to SVt_PV, and warn if the value |
2248 | is uninitialised. */ | |
10516c54 | 2249 | (void) SvPV_nolen_const(right); |
267cc4a8 NC |
2250 | /* Doing this avoids a check every time in pp_iter in pp_hot.c |
2251 | to replace !SvOK() with a pointer to "". */ | |
2252 | if (!SvOK(right)) { | |
2253 | SvREFCNT_dec(right); | |
d01136d6 | 2254 | cx->blk_loop.state_u.lazysv.end = &PL_sv_no; |
267cc4a8 | 2255 | } |
3f63a782 | 2256 | } |
89ea2908 | 2257 | } |
d01136d6 | 2258 | else /* SvTYPE(maybe_ary) == SVt_PVAV */ { |
502c6561 | 2259 | cx->blk_loop.state_u.ary.ary = MUTABLE_AV(maybe_ary); |
d01136d6 BS |
2260 | SvREFCNT_inc(maybe_ary); |
2261 | cx->blk_loop.state_u.ary.ix = | |
2262 | (PL_op->op_private & OPpITER_REVERSED) ? | |
2263 | AvFILL(cx->blk_loop.state_u.ary.ary) + 1 : | |
2264 | -1; | |
ef3e5ea9 | 2265 | } |
89ea2908 | 2266 | } |
d01136d6 BS |
2267 | else { /* iterating over items on the stack */ |
2268 | cx->blk_loop.state_u.ary.ary = NULL; /* means to use the stack */ | |
ef3e5ea9 | 2269 | if (PL_op->op_private & OPpITER_REVERSED) { |
d01136d6 | 2270 | cx->blk_loop.state_u.ary.ix = cx->blk_oldsp + 1; |
ef3e5ea9 NC |
2271 | } |
2272 | else { | |
d01136d6 | 2273 | cx->blk_loop.state_u.ary.ix = MARK - PL_stack_base; |
ef3e5ea9 | 2274 | } |
4633a7c4 | 2275 | } |
a0d0e21e LW |
2276 | |
2277 | RETURN; | |
2278 | } | |
2279 | ||
2280 | PP(pp_enterloop) | |
2281 | { | |
27da23d5 | 2282 | dVAR; dSP; |
c09156bb | 2283 | register PERL_CONTEXT *cx; |
f54cb97a | 2284 | const I32 gimme = GIMME_V; |
a0d0e21e | 2285 | |
d343c3ef | 2286 | ENTER_with_name("loop1"); |
a0d0e21e | 2287 | SAVETMPS; |
d343c3ef | 2288 | ENTER_with_name("loop2"); |
a0d0e21e | 2289 | |
3b719c58 NC |
2290 | PUSHBLOCK(cx, CXt_LOOP_PLAIN, SP); |
2291 | PUSHLOOP_PLAIN(cx, SP); | |
a0d0e21e LW |
2292 | |
2293 | RETURN; | |
2294 | } | |
2295 | ||
2296 | PP(pp_leaveloop) | |
2297 | { | |
27da23d5 | 2298 | dVAR; dSP; |
c09156bb | 2299 | register PERL_CONTEXT *cx; |
a0d0e21e LW |
2300 | I32 gimme; |
2301 | SV **newsp; | |
2302 | PMOP *newpm; | |
2303 | SV **mark; | |
2304 | ||
2305 | POPBLOCK(cx,newpm); | |
3b719c58 | 2306 | assert(CxTYPE_is_LOOP(cx)); |
4fdae800 | 2307 | mark = newsp; |
a8bba7fa | 2308 | newsp = PL_stack_base + cx->blk_loop.resetsp; |
f86702cc | 2309 | |
a1f49e72 | 2310 | TAINT_NOT; |
b9d76716 | 2311 | SP = adjust_stack_on_leave(newsp, SP, MARK, gimme, 0); |
f86702cc | 2312 | PUTBACK; |
2313 | ||
a8bba7fa | 2314 | POPLOOP(cx); /* Stack values are safe: release loop vars ... */ |
3280af22 | 2315 | PL_curpm = newpm; /* ... and pop $1 et al */ |
f86702cc | 2316 | |
d343c3ef GG |
2317 | LEAVE_with_name("loop2"); |
2318 | LEAVE_with_name("loop1"); | |
a0d0e21e | 2319 | |
f86702cc | 2320 | return NORMAL; |
a0d0e21e LW |
2321 | } |
2322 | ||
3bdf583b FC |
2323 | STATIC void |
2324 | S_return_lvalues(pTHX_ SV **mark, SV **sp, SV **newsp, I32 gimme, | |
d25b0d7b | 2325 | PERL_CONTEXT *cx, PMOP *newpm) |
3bdf583b | 2326 | { |
80422e24 | 2327 | const bool ref = !!(CxLVAL(cx) & OPpENTERSUB_INARGS); |
3bdf583b | 2328 | if (gimme == G_SCALAR) { |
d25b0d7b FC |
2329 | if (CxLVAL(cx) && !ref) { /* Leave it as it is if we can. */ |
2330 | SV *sv; | |
001de122 | 2331 | const char *what = NULL; |
d25b0d7b FC |
2332 | if (MARK < SP) { |
2333 | assert(MARK+1 == SP); | |
2334 | if ((SvPADTMP(TOPs) || | |
2335 | (SvFLAGS(TOPs) & (SVf_READONLY | SVf_FAKE)) | |
2336 | == SVf_READONLY | |
2337 | ) && | |
2338 | !SvSMAGICAL(TOPs)) { | |
001de122 | 2339 | what = |
d25b0d7b | 2340 | SvREADONLY(TOPs) ? (TOPs == &PL_sv_undef) ? "undef" |
001de122 | 2341 | : "a readonly value" : "a temporary"; |
d25b0d7b | 2342 | } |
001de122 | 2343 | else goto copy_sv; |
d25b0d7b FC |
2344 | } |
2345 | else { | |
2346 | /* sub:lvalue{} will take us here. */ | |
001de122 | 2347 | what = "undef"; |
d25b0d7b | 2348 | } |
001de122 FC |
2349 | LEAVE; |
2350 | cxstack_ix--; | |
2351 | POPSUB(cx,sv); | |
2352 | PL_curpm = newpm; | |
2353 | LEAVESUB(sv); | |
2354 | Perl_croak(aTHX_ | |
2355 | "Can't return %s from lvalue subroutine", what | |
2356 | ); | |
d25b0d7b | 2357 | } |
93905212 | 2358 | if (MARK < SP) { |
a5ad7a5a | 2359 | copy_sv: |
3bdf583b FC |
2360 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
2361 | *++newsp = SvREFCNT_inc(*SP); | |
2362 | FREETMPS; | |
2363 | sv_2mortal(*newsp); | |
2364 | } | |
2365 | else | |
e08be60b | 2366 | *++newsp = |
e08be60b FC |
2367 | !SvTEMP(*SP) |
2368 | ? sv_2mortal(SvREFCNT_inc_simple_NN(*SP)) | |
2369 | : *SP; | |
3bdf583b | 2370 | } |
0d235c77 FC |
2371 | else { |
2372 | EXTEND(newsp,1); | |
3bdf583b | 2373 | *++newsp = &PL_sv_undef; |
0d235c77 | 2374 | } |
0e9700df | 2375 | if (CxLVAL(cx) & OPpDEREF) { |
767eda44 FC |
2376 | SvGETMAGIC(TOPs); |
2377 | if (!SvOK(TOPs)) { | |
0e9700df | 2378 | TOPs = vivify_ref(TOPs, CxLVAL(cx) & OPpDEREF); |
767eda44 FC |
2379 | } |
2380 | } | |
3bdf583b FC |
2381 | } |
2382 | else if (gimme == G_ARRAY) { | |
0e9700df | 2383 | assert (!(CxLVAL(cx) & OPpDEREF)); |
80422e24 | 2384 | if (ref || !CxLVAL(cx)) |
e08be60b FC |
2385 | while (++MARK <= SP) |
2386 | *++newsp = | |
2387 | SvTEMP(*MARK) | |
2388 | ? *MARK | |
80422e24 FC |
2389 | : ref && SvFLAGS(*MARK) & SVs_PADTMP |
2390 | ? sv_mortalcopy(*MARK) | |
2391 | : sv_2mortal(SvREFCNT_inc_simple_NN(*MARK)); | |
e08be60b | 2392 | else while (++MARK <= SP) { |
d25b0d7b FC |
2393 | if (*MARK != &PL_sv_undef |
2394 | && (SvPADTMP(*MARK) | |
2395 | || (SvFLAGS(*MARK) & (SVf_READONLY|SVf_FAKE)) | |
2396 | == SVf_READONLY | |
2397 | ) | |
2398 | ) { | |
2399 | SV *sv; | |
2400 | /* Might be flattened array after $#array = */ | |
2401 | PUTBACK; | |
2402 | LEAVE; | |
2403 | cxstack_ix--; | |
2404 | POPSUB(cx,sv); | |
2405 | PL_curpm = newpm; | |
2406 | LEAVESUB(sv); | |
ae917476 | 2407 | /* diag_listed_as: Can't return %s from lvalue subroutine */ |
d25b0d7b FC |
2408 | Perl_croak(aTHX_ |
2409 | "Can't return a %s from lvalue subroutine", | |
2410 | SvREADONLY(TOPs) ? "readonly value" : "temporary"); | |
2411 | } | |
2412 | else | |
4bee03f8 FC |
2413 | *++newsp = |
2414 | SvTEMP(*MARK) | |
2415 | ? *MARK | |
2416 | : sv_2mortal(SvREFCNT_inc_simple_NN(*MARK)); | |
3bdf583b FC |
2417 | } |
2418 | } | |
2419 | PL_stack_sp = newsp; | |
2420 | } | |
2421 | ||
a0d0e21e LW |
2422 | PP(pp_return) |
2423 | { | |
27da23d5 | 2424 | dVAR; dSP; dMARK; |
c09156bb | 2425 | register PERL_CONTEXT *cx; |
f86702cc | 2426 | bool popsub2 = FALSE; |
b45de488 | 2427 | bool clear_errsv = FALSE; |
fa1e92c4 | 2428 | bool lval = FALSE; |
a0d0e21e LW |
2429 | I32 gimme; |
2430 | SV **newsp; | |
2431 | PMOP *newpm; | |
2432 | I32 optype = 0; | |
b6494f15 | 2433 | SV *namesv; |
b0d9ce38 | 2434 | SV *sv; |
b263a1ad | 2435 | OP *retop = NULL; |
a0d0e21e | 2436 | |
0bd48802 AL |
2437 | const I32 cxix = dopoptosub(cxstack_ix); |
2438 | ||
9850bf21 RH |
2439 | if (cxix < 0) { |
2440 | if (CxMULTICALL(cxstack)) { /* In this case we must be in a | |
2441 | * sort block, which is a CXt_NULL | |
2442 | * not a CXt_SUB */ | |
2443 | dounwind(0); | |
d7507f74 RH |
2444 | PL_stack_base[1] = *PL_stack_sp; |
2445 | PL_stack_sp = PL_stack_base + 1; | |
a0d0e21e LW |
2446 | return 0; |
2447 | } | |
9850bf21 RH |
2448 | else |
2449 | DIE(aTHX_ "Can't return outside a subroutine"); | |
a0d0e21e | 2450 | } |
a0d0e21e LW |
2451 | if (cxix < cxstack_ix) |
2452 | dounwind(cxix); | |
2453 | ||
d7507f74 RH |
2454 | if (CxMULTICALL(&cxstack[cxix])) { |
2455 | gimme = cxstack[cxix].blk_gimme; | |
2456 | if (gimme == G_VOID) | |
2457 | PL_stack_sp = PL_stack_base; | |
2458 | else if (gimme == G_SCALAR) { | |
2459 | PL_stack_base[1] = *PL_stack_sp; | |
2460 | PL_stack_sp = PL_stack_base + 1; | |
2461 | } | |
9850bf21 | 2462 | return 0; |
d7507f74 | 2463 | } |
9850bf21 | 2464 | |
a0d0e21e | 2465 | POPBLOCK(cx,newpm); |
6b35e009 | 2466 | switch (CxTYPE(cx)) { |
a0d0e21e | 2467 | case CXt_SUB: |
f86702cc | 2468 | popsub2 = TRUE; |
fa1e92c4 | 2469 | lval = !!CvLVALUE(cx->blk_sub.cv); |
f39bc417 | 2470 | retop = cx->blk_sub.retop; |
5dd42e15 | 2471 | cxstack_ix++; /* preserve cx entry on stack for use by POPSUB */ |
a0d0e21e LW |
2472 | break; |
2473 | case CXt_EVAL: | |
b45de488 GS |
2474 | if (!(PL_in_eval & EVAL_KEEPERR)) |
2475 | clear_errsv = TRUE; | |
a0d0e21e | 2476 | POPEVAL(cx); |
b6494f15 | 2477 | namesv = cx->blk_eval.old_namesv; |
f39bc417 | 2478 | retop = cx->blk_eval.retop; |
1d76a5c3 GS |
2479 | if (CxTRYBLOCK(cx)) |
2480 | break; | |
748a9306 LW |
2481 | if (optype == OP_REQUIRE && |
2482 | (MARK == SP || (gimme == G_SCALAR && !SvTRUE(*SP))) ) | |
2483 | { | |
54310121 | 2484 | /* Unassume the success we assumed earlier. */ |
b6494f15 | 2485 | (void)hv_delete(GvHVn(PL_incgv), |
ecad31f0 | 2486 | SvPVX_const(namesv), |
c60dbbc3 | 2487 | SvUTF8(namesv) ? -(I32)SvCUR(namesv) : (I32)SvCUR(namesv), |
b6494f15 VP |
2488 | G_DISCARD); |
2489 | DIE(aTHX_ "%"SVf" did not return a true value", SVfARG(namesv)); | |
748a9306 | 2490 | } |
a0d0e21e | 2491 | break; |
7766f137 GS |
2492 | case CXt_FORMAT: |
2493 | POPFORMAT(cx); | |
f39bc417 | 2494 | retop = cx->blk_sub.retop; |
7766f137 | 2495 | break; |
a0d0e21e | 2496 | default: |
5637ef5b | 2497 | DIE(aTHX_ "panic: return, type=%u", (unsigned) CxTYPE(cx)); |
a0d0e21e LW |
2498 | } |
2499 | ||
a1f49e72 | 2500 | TAINT_NOT; |
d25b0d7b | 2501 | if (lval) S_return_lvalues(aTHX_ MARK, SP, newsp, gimme, cx, newpm); |
3bdf583b FC |
2502 | else { |
2503 | if (gimme == G_SCALAR) { | |
a29cdaf0 IZ |
2504 | if (MARK < SP) { |
2505 | if (popsub2) { | |
a8bba7fa | 2506 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
6f48390a FC |
2507 | if (SvTEMP(TOPs) && SvREFCNT(TOPs) == 1 |
2508 | && !SvMAGICAL(TOPs)) { | |
a29cdaf0 IZ |
2509 | *++newsp = SvREFCNT_inc(*SP); |
2510 | FREETMPS; | |
2511 | sv_2mortal(*newsp); | |
959e3673 GS |
2512 | } |
2513 | else { | |
2514 | sv = SvREFCNT_inc(*SP); /* FREETMPS could clobber it */ | |
a29cdaf0 | 2515 | FREETMPS; |
959e3673 GS |
2516 | *++newsp = sv_mortalcopy(sv); |
2517 | SvREFCNT_dec(sv); | |
a29cdaf0 | 2518 | } |
959e3673 | 2519 | } |
6f48390a FC |
2520 | else if (SvTEMP(*SP) && SvREFCNT(*SP) == 1 |
2521 | && !SvMAGICAL(*SP)) { | |
767eda44 | 2522 | *++newsp = *SP; |
767eda44 | 2523 | } |
959e3673 | 2524 | else |
767eda44 | 2525 | *++newsp = sv_mortalcopy(*SP); |
959e3673 GS |
2526 | } |
2527 | else | |
a29cdaf0 | 2528 | *++newsp = sv_mortalcopy(*SP); |
959e3673 GS |
2529 | } |
2530 | else | |
3280af22 | 2531 | *++newsp = &PL_sv_undef; |
3bdf583b FC |
2532 | } |
2533 | else if (gimme == G_ARRAY) { | |
a1f49e72 | 2534 | while (++MARK <= SP) { |
3ed94dc0 | 2535 | *++newsp = popsub2 && SvTEMP(*MARK) && SvREFCNT(*MARK) == 1 |
6f48390a | 2536 | && !SvGMAGICAL(*MARK) |
f86702cc | 2537 | ? *MARK : sv_mortalcopy(*MARK); |
a1f49e72 CS |
2538 | TAINT_NOT; /* Each item is independent */ |
2539 | } | |
3bdf583b FC |
2540 | } |
2541 | PL_stack_sp = newsp; | |
a0d0e21e | 2542 | } |
a0d0e21e | 2543 | |
5dd42e15 | 2544 | LEAVE; |
f86702cc | 2545 | /* Stack values are safe: */ |
2546 | if (popsub2) { | |
5dd42e15 | 2547 | cxstack_ix--; |
b0d9ce38 | 2548 | POPSUB(cx,sv); /* release CV and @_ ... */ |
f86702cc | 2549 | } |
b0d9ce38 | 2550 | else |
c445ea15 | 2551 | sv = NULL; |
3280af22 | 2552 | PL_curpm = newpm; /* ... and pop $1 et al */ |
f86702cc | 2553 | |
b0d9ce38 | 2554 | LEAVESUB(sv); |
8433848b | 2555 | if (clear_errsv) { |
ab69dbc2 | 2556 | CLEAR_ERRSV(); |
8433848b | 2557 | } |
f39bc417 | 2558 | return retop; |
a0d0e21e LW |
2559 | } |
2560 | ||
4f443c3d FC |
2561 | /* This duplicates parts of pp_leavesub, so that it can share code with |
2562 | * pp_return */ | |
2563 | PP(pp_leavesublv) | |
2564 | { | |
2565 | dVAR; dSP; | |
4f443c3d FC |
2566 | SV **newsp; |
2567 | PMOP *newpm; | |
2568 | I32 gimme; | |
2569 | register PERL_CONTEXT *cx; | |
2570 | SV *sv; | |
2571 | ||
2572 | if (CxMULTICALL(&cxstack[cxstack_ix])) | |
2573 | return 0; | |
2574 | ||
2575 | POPBLOCK(cx,newpm); | |
2576 | cxstack_ix++; /* temporarily protect top context */ | |
4f443c3d FC |
2577 | |
2578 | TAINT_NOT; | |
2579 | ||
0d235c77 | 2580 | S_return_lvalues(aTHX_ newsp, SP, newsp, gimme, cx, newpm); |
4f443c3d FC |
2581 | |
2582 | LEAVE; | |
2583 | cxstack_ix--; | |
2584 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ | |
2585 | PL_curpm = newpm; /* ... and pop $1 et al */ | |
2586 | ||
2587 | LEAVESUB(sv); | |
2588 | return cx->blk_sub.retop; | |
2589 | } | |
2590 | ||
a0d0e21e LW |
2591 | PP(pp_last) |
2592 | { | |
27da23d5 | 2593 | dVAR; dSP; |
a0d0e21e | 2594 | I32 cxix; |
c09156bb | 2595 | register PERL_CONTEXT *cx; |
f86702cc | 2596 | I32 pop2 = 0; |
a0d0e21e | 2597 | I32 gimme; |
8772537c | 2598 | I32 optype; |
b263a1ad | 2599 | OP *nextop = NULL; |
a0d0e21e LW |
2600 | SV **newsp; |
2601 | PMOP *newpm; | |
a8bba7fa | 2602 | SV **mark; |
c445ea15 | 2603 | SV *sv = NULL; |
9d4ba2ae | 2604 | |
a0d0e21e | 2605 | |
533c011a | 2606 | if (PL_op->op_flags & OPf_SPECIAL) { |
a0d0e21e LW |
2607 | cxix = dopoptoloop(cxstack_ix); |
2608 | if (cxix < 0) | |
a651a37d | 2609 | DIE(aTHX_ "Can't \"last\" outside a loop block"); |
a0d0e21e LW |
2610 | } |
2611 | else { | |
2612 | cxix = dopoptolabel(cPVOP->op_pv); | |
2613 | if (cxix < 0) | |
cea2e8a9 | 2614 | DIE(aTHX_ "Label not found for \"last %s\"", cPVOP->op_pv); |
a0d0e21e LW |
2615 | } |
2616 | if (cxix < cxstack_ix) | |
2617 | dounwind(cxix); | |
2618 | ||
2619 | POPBLOCK(cx,newpm); | |
5dd42e15 | 2620 | cxstack_ix++; /* temporarily protect top context */ |
a8bba7fa | 2621 | mark = newsp; |
6b35e009 | 2622 | switch (CxTYPE(cx)) { |
c6fdafd0 | 2623 | case CXt_LOOP_LAZYIV: |
d01136d6 | 2624 | case CXt_LOOP_LAZYSV: |
3b719c58 NC |
2625 | case CXt_LOOP_FOR: |
2626 | case CXt_LOOP_PLAIN: | |
2627 | pop2 = CxTYPE(cx); | |
a8bba7fa | 2628 | newsp = PL_stack_base + cx->blk_loop.resetsp; |
022eaa24 | 2629 | nextop = cx->blk_loop.my_op->op_lastop->op_next; |
a0d0e21e | 2630 | break; |
f86702cc | 2631 | case CXt_SUB: |
f86702cc | 2632 | pop2 = CXt_SUB; |
f39bc417 | 2633 | nextop = cx->blk_sub.retop; |
a0d0e21e | 2634 | break; |
f86702cc | 2635 | case CXt_EVAL: |
2636 | POPEVAL(cx); | |
f39bc417 | 2637 | nextop = cx->blk_eval.retop; |
a0d0e21e | 2638 | break; |
7766f137 GS |
2639 | case CXt_FORMAT: |
2640 | POPFORMAT(cx); | |
f39bc417 | 2641 | nextop = cx->blk_sub.retop; |
7766f137 | 2642 | break; |
a0d0e21e | 2643 | default: |
5637ef5b | 2644 | DIE(aTHX_ "panic: last, type=%u", (unsigned) CxTYPE(cx)); |
a0d0e21e LW |
2645 | } |
2646 | ||
a1f49e72 | 2647 | TAINT_NOT; |
b9d76716 VP |
2648 | SP = adjust_stack_on_leave(newsp, SP, MARK, gimme, |
2649 | pop2 == CXt_SUB ? SVs_TEMP : 0); | |
f86702cc | 2650 | PUTBACK; |
2651 | ||
5dd42e15 DM |
2652 | LEAVE; |
2653 | cxstack_ix--; | |
f86702cc | 2654 | /* Stack values are safe: */ |
2655 | switch (pop2) { | |
c6fdafd0 | 2656 | case CXt_LOOP_LAZYIV: |
3b719c58 | 2657 | case CXt_LOOP_PLAIN: |
d01136d6 | 2658 | case CXt_LOOP_LAZYSV: |
3b719c58 | 2659 | case CXt_LOOP_FOR: |
a8bba7fa | 2660 | POPLOOP(cx); /* release loop vars ... */ |
4fdae800 | 2661 | LEAVE; |
f86702cc | 2662 | break; |
2663 | case CXt_SUB: | |
b0d9ce38 | 2664 | POPSUB(cx,sv); /* release CV and @_ ... */ |
f86702cc | 2665 | break; |
a0d0e21e | 2666 | } |
3280af22 | 2667 | PL_curpm = newpm; /* ... and pop $1 et al */ |
a0d0e21e | 2668 | |
b0d9ce38 | 2669 | LEAVESUB(sv); |
9d4ba2ae AL |
2670 | PERL_UNUSED_VAR(optype); |
2671 | PERL_UNUSED_VAR(gimme); | |
f86702cc | 2672 | return nextop; |
a0d0e21e LW |
2673 | } |
2674 | ||
2675 | PP(pp_next) | |
2676 | { | |
27da23d5 | 2677 | dVAR; |
a0d0e21e | 2678 | I32 cxix; |
c09156bb | 2679 | register PERL_CONTEXT *cx; |
85538317 | 2680 | I32 inner; |
a0d0e21e | 2681 | |
533c011a | 2682 | if (PL_op->op_flags & OPf_SPECIAL) { |
a0d0e21e LW |
2683 | cxix = dopoptoloop(cxstack_ix); |
2684 | if (cxix < 0) | |
a651a37d | 2685 | DIE(aTHX_ "Can't \"next\" outside a loop block"); |
a0d0e21e LW |
2686 | } |
2687 | else { | |
2688 | cxix = dopoptolabel(cPVOP->op_pv); | |
2689 | if (cxix < 0) | |
cea2e8a9 | 2690 | DIE(aTHX_ "Label not found for \"next %s\"", cPVOP->op_pv); |
a0d0e21e LW |
2691 | } |
2692 | if (cxix < cxstack_ix) | |
2693 | dounwind(cxix); | |
2694 | ||
85538317 GS |
2695 | /* clear off anything above the scope we're re-entering, but |
2696 | * save the rest until after a possible continue block */ | |
2697 | inner = PL_scopestack_ix; | |
1ba6ee2b | 2698 | TOPBLOCK(cx); |
85538317 GS |
2699 | if (PL_scopestack_ix < inner) |
2700 | leave_scope(PL_scopestack[PL_scopestack_ix]); | |
3a1b2b9e | 2701 | PL_curcop = cx->blk_oldcop; |
d57ce4df | 2702 | return (cx)->blk_loop.my_op->op_nextop; |
a0d0e21e LW |
2703 | } |
2704 | ||
2705 | PP(pp_redo) | |
2706 | { | |
27da23d5 | 2707 | dVAR; |
a0d0e21e | 2708 | I32 cxix; |
c09156bb | 2709 | register PERL_CONTEXT *cx; |
a0d0e21e | 2710 | I32 oldsave; |
a034e688 | 2711 | OP* redo_op; |
a0d0e21e | 2712 | |
533c011a | 2713 | if (PL_op->op_flags & OPf_SPECIAL) { |
a0d0e21e LW |
2714 | cxix = dopoptoloop(cxstack_ix); |
2715 | if (cxix < 0) | |
a651a37d | 2716 | DIE(aTHX_ "Can't \"redo\" outside a loop block"); |
a0d0e21e LW |
2717 | } |
2718 | else { | |
2719 | cxix = dopoptolabel(cPVOP->op_pv); | |
2720 | if (cxix < 0) | |
cea2e8a9 | 2721 | DIE(aTHX_ "Label not found for \"redo %s\"", cPVOP->op_pv); |
a0d0e21e LW |
2722 | } |
2723 | if (cxix < cxstack_ix) | |
2724 | dounwind(cxix); | |
2725 | ||
022eaa24 | 2726 | redo_op = cxstack[cxix].blk_loop.my_op->op_redoop; |
a034e688 DM |
2727 | if (redo_op->op_type == OP_ENTER) { |
2728 | /* pop one less context to avoid $x being freed in while (my $x..) */ | |
2729 | cxstack_ix++; | |
2730 | assert(CxTYPE(&cxstack[cxstack_ix]) == CXt_BLOCK); | |
2731 | redo_op = redo_op->op_next; | |
2732 | } | |
2733 | ||
a0d0e21e | 2734 | TOPBLOCK(cx); |
3280af22 | 2735 | oldsave = PL_scopestack[PL_scopestack_ix - 1]; |
a0d0e21e | 2736 | LEAVE_SCOPE(oldsave); |
936c78b5 | 2737 | FREETMPS; |
3a1b2b9e | 2738 | PL_curcop = cx->blk_oldcop; |
a034e688 | 2739 | return redo_op; |
a0d0e21e LW |
2740 | } |
2741 | ||
0824fdcb | 2742 | STATIC OP * |
bfed75c6 | 2743 | S_dofindlabel(pTHX_ OP *o, const char *label, OP **opstack, OP **oplimit) |
a0d0e21e | 2744 | { |
97aff369 | 2745 | dVAR; |
a0d0e21e | 2746 | OP **ops = opstack; |
bfed75c6 | 2747 | static const char too_deep[] = "Target of goto is too deeply nested"; |
a0d0e21e | 2748 | |
7918f24d NC |
2749 | PERL_ARGS_ASSERT_DOFINDLABEL; |
2750 | ||
fc36a67e | 2751 | if (ops >= oplimit) |
cea2e8a9 | 2752 | Perl_croak(aTHX_ too_deep); |
11343788 MB |
2753 | if (o->op_type == OP_LEAVE || |
2754 | o->op_type == OP_SCOPE || | |
2755 | o->op_type == OP_LEAVELOOP || | |
33d34e4c | 2756 | o->op_type == OP_LEAVESUB || |
11343788 | 2757 | o->op_type == OP_LEAVETRY) |
fc36a67e | 2758 | { |
5dc0d613 | 2759 | *ops++ = cUNOPo->op_first; |
fc36a67e | 2760 | if (ops >= oplimit) |
cea2e8a9 | 2761 | Perl_croak(aTHX_ too_deep); |
fc36a67e | 2762 | } |
c4aa4e48 | 2763 | *ops = 0; |
11343788 | 2764 | if (o->op_flags & OPf_KIDS) { |
aec46f14 | 2765 | OP *kid; |
a0d0e21e | 2766 | /* First try all the kids at this level, since that's likeliest. */ |
11343788 | 2767 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) { |
7e8f1eac AD |
2768 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) { |
2769 | const char *kid_label = CopLABEL(kCOP); | |
2770 | if (kid_label && strEQ(kid_label, label)) | |
2771 | return kid; | |
2772 | } | |
a0d0e21e | 2773 | } |
11343788 | 2774 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) { |
3280af22 | 2775 | if (kid == PL_lastgotoprobe) |
a0d0e21e | 2776 | continue; |
ed8d0fe2 SM |
2777 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) { |
2778 | if (ops == opstack) | |
2779 | *ops++ = kid; | |
2780 | else if (ops[-1]->op_type == OP_NEXTSTATE || | |
2781 | ops[-1]->op_type == OP_DBSTATE) | |
2782 | ops[-1] = kid; | |
2783 | else | |
2784 | *ops++ = kid; | |
2785 | } | |
155aba94 | 2786 | if ((o = dofindlabel(kid, label, ops, oplimit))) |
11343788 | 2787 | return o; |
a0d0e21e LW |
2788 | } |
2789 | } | |
c4aa4e48 | 2790 | *ops = 0; |
a0d0e21e LW |
2791 | return 0; |
2792 | } | |
2793 | ||
a0d0e21e LW |
2794 | PP(pp_goto) |
2795 | { | |
27da23d5 | 2796 | dVAR; dSP; |
cbbf8932 | 2797 | OP *retop = NULL; |
a0d0e21e | 2798 | I32 ix; |
c09156bb | 2799 | register PERL_CONTEXT *cx; |
fc36a67e | 2800 | #define GOTO_DEPTH 64 |
2801 | OP *enterops[GOTO_DEPTH]; | |
cbbf8932 | 2802 | const char *label = NULL; |
bfed75c6 AL |
2803 | const bool do_dump = (PL_op->op_type == OP_DUMP); |
2804 | static const char must_have_label[] = "goto must have label"; | |
a0d0e21e | 2805 | |
533c011a | 2806 | if (PL_op->op_flags & OPf_STACKED) { |
9d4ba2ae | 2807 | SV * const sv = POPs; |
a0d0e21e LW |
2808 | |
2809 | /* This egregious kludge implements goto &subroutine */ | |
2810 | if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVCV) { | |
2811 | I32 cxix; | |
c09156bb | 2812 | register PERL_CONTEXT *cx; |
ea726b52 | 2813 | CV *cv = MUTABLE_CV(SvRV(sv)); |
a0d0e21e LW |
2814 | SV** mark; |
2815 | I32 items = 0; | |
2816 | I32 oldsave; | |
b1464ded | 2817 | bool reified = 0; |
a0d0e21e | 2818 | |
e8f7dd13 | 2819 | retry: |
4aa0a1f7 | 2820 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
7fc63493 | 2821 | const GV * const gv = CvGV(cv); |
e8f7dd13 | 2822 | if (gv) { |
7fc63493 | 2823 | GV *autogv; |
e8f7dd13 GS |
2824 | SV *tmpstr; |
2825 | /* autoloaded stub? */ | |
2826 | if (cv != GvCV(gv) && (cv = GvCV(gv))) | |
2827 | goto retry; | |
c271df94 BF |
2828 | autogv = gv_autoload_pvn(GvSTASH(gv), GvNAME(gv), |
2829 | GvNAMELEN(gv), | |
2830 | GvNAMEUTF8(gv) ? SVf_UTF8 : 0); | |
e8f7dd13 GS |
2831 | if (autogv && (cv = GvCV(autogv))) |
2832 | goto retry; | |
2833 | tmpstr = sv_newmortal(); | |
c445ea15 | 2834 | gv_efullname3(tmpstr, gv, NULL); |
be2597df | 2835 | DIE(aTHX_ "Goto undefined subroutine &%"SVf"", SVfARG(tmpstr)); |
4aa0a1f7 | 2836 | } |
cea2e8a9 | 2837 | DIE(aTHX_ "Goto undefined subroutine"); |
4aa0a1f7 AD |
2838 | } |
2839 | ||
a0d0e21e | 2840 | /* First do some returnish stuff. */ |
b37c2d43 | 2841 | SvREFCNT_inc_simple_void(cv); /* avoid premature free during unwind */ |
71fc2216 | 2842 | FREETMPS; |
a0d0e21e LW |
2843 | cxix = dopoptosub(cxstack_ix); |
2844 | if (cxix < 0) | |
cea2e8a9 | 2845 | DIE(aTHX_ "Can't goto subroutine outside a subroutine"); |
a0d0e21e LW |
2846 | if (cxix < cxstack_ix) |
2847 | dounwind(cxix); | |
2848 | TOPBLOCK(cx); | |
2d43a17f | 2849 | SPAGAIN; |
564abe23 | 2850 | /* ban goto in eval: see <20050521150056.GC20213@iabyn.com> */ |
2d43a17f | 2851 | if (CxTYPE(cx) == CXt_EVAL) { |
c74ace89 | 2852 | if (CxREALEVAL(cx)) |
00455a92 | 2853 | /* diag_listed_as: Can't goto subroutine from an eval-%s */ |
c74ace89 DM |
2854 | DIE(aTHX_ "Can't goto subroutine from an eval-string"); |
2855 | else | |
00455a92 | 2856 | /* diag_listed_as: Can't goto subroutine from an eval-%s */ |
c74ace89 | 2857 | DIE(aTHX_ "Can't goto subroutine from an eval-block"); |
2d43a17f | 2858 | } |
9850bf21 RH |
2859 | else if (CxMULTICALL(cx)) |
2860 | DIE(aTHX_ "Can't goto subroutine from a sort sub (or similar callback)"); | |
bafb2adc | 2861 | if (CxTYPE(cx) == CXt_SUB && CxHASARGS(cx)) { |
d8b46c1b | 2862 | /* put @_ back onto stack */ |
a0d0e21e | 2863 | AV* av = cx->blk_sub.argarray; |
bfed75c6 | 2864 | |
93965878 | 2865 | items = AvFILLp(av) + 1; |
a45cdc79 DM |
2866 | EXTEND(SP, items+1); /* @_ could have been extended. */ |
2867 | Copy(AvARRAY(av), SP + 1, items, SV*); | |
3280af22 NIS |
2868 | SvREFCNT_dec(GvAV(PL_defgv)); |
2869 | GvAV(PL_defgv) = cx->blk_sub.savearray; | |
b1464ded | 2870 | CLEAR_ARGARRAY(av); |
d8b46c1b | 2871 | /* abandon @_ if it got reified */ |
62b1ebc2 | 2872 | if (AvREAL(av)) { |
b1464ded DM |
2873 | reified = 1; |
2874 | SvREFCNT_dec(av); | |
d8b46c1b GS |
2875 | av = newAV(); |
2876 | av_extend(av, items-1); | |
11ca45c0 | 2877 | AvREIFY_only(av); |
ad64d0ec | 2878 | PAD_SVl(0) = MUTABLE_SV(cx->blk_sub.argarray = av); |
62b1ebc2 | 2879 | } |
a0d0e21e | 2880 | } |
aed2304a | 2881 | else if (CvISXSUB(cv)) { /* put GvAV(defgv) back onto stack */ |
890ce7af | 2882 | AV* const av = GvAV(PL_defgv); |
1fa4e549 | 2883 | items = AvFILLp(av) + 1; |
a45cdc79 DM |
2884 | EXTEND(SP, items+1); /* @_ could have been extended. */ |
2885 | Copy(AvARRAY(av), SP + 1, items, SV*); | |
1fa4e549 | 2886 | } |
a45cdc79 DM |
2887 | mark = SP; |
2888 | SP += items; | |
6b35e009 | 2889 | if (CxTYPE(cx) == CXt_SUB && |
b150fb22 | 2890 | !(CvDEPTH(cx->blk_sub.cv) = cx->blk_sub.olddepth)) |
a0d0e21e | 2891 | SvREFCNT_dec(cx->blk_sub.cv); |
3280af22 | 2892 | oldsave = PL_scopestack[PL_scopestack_ix - 1]; |
a0d0e21e LW |
2893 | LEAVE_SCOPE(oldsave); |
2894 | ||
1d59c038 FC |
2895 | /* A destructor called during LEAVE_SCOPE could have undefined |
2896 | * our precious cv. See bug #99850. */ | |
2897 | if (!CvROOT(cv) && !CvXSUB(cv)) { | |
2898 | const GV * const gv = CvGV(cv); | |
2899 | if (gv) { | |
2900 | SV * const tmpstr = sv_newmortal(); | |
2901 | gv_efullname3(tmpstr, gv, NULL); | |
2902 | DIE(aTHX_ "Goto undefined subroutine &%"SVf"", | |
2903 | SVfARG(tmpstr)); | |
2904 | } | |
2905 | DIE(aTHX_ "Goto undefined subroutine"); | |
2906 | } | |
2907 | ||
a0d0e21e LW |
2908 | /* Now do some callish stuff. */ |
2909 | SAVETMPS; | |
5023d17a | 2910 | SAVEFREESV(cv); /* later, undo the 'avoid premature free' hack */ |
aed2304a | 2911 | if (CvISXSUB(cv)) { |
b37c2d43 | 2912 | OP* const retop = cx->blk_sub.retop; |
9d63fa07 KW |
2913 | SV **newsp PERL_UNUSED_DECL; |
2914 | I32 gimme PERL_UNUSED_DECL; | |
b1464ded DM |
2915 | if (reified) { |
2916 | I32 index; | |
2917 | for (index=0; index<items; index++) | |
2918 | sv_2mortal(SP[-index]); | |
2919 | } | |
1fa4e549 | 2920 | |
b37c2d43 AL |
2921 | /* XS subs don't have a CxSUB, so pop it */ |
2922 | POPBLOCK(cx, PL_curpm); | |
2923 | /* Push a mark for the start of arglist */ | |
2924 | PUSHMARK(mark); | |
2925 | PUTBACK; | |
2926 | (void)(*CvXSUB(cv))(aTHX_ cv); | |
a57c6685 | 2927 | LEAVE; |
5eff7df7 | 2928 | return retop; |
a0d0e21e LW |
2929 | } |
2930 | else { | |
b37c2d43 | 2931 | AV* const padlist = CvPADLIST(cv); |
6b35e009 | 2932 | if (CxTYPE(cx) == CXt_EVAL) { |
85a64632 | 2933 | PL_in_eval = CxOLD_IN_EVAL(cx); |
3280af22 | 2934 | PL_eval_root = cx->blk_eval.old_eval_root; |
b150fb22 | 2935 | cx->cx_type = CXt_SUB; |
b150fb22 | 2936 | } |
a0d0e21e | 2937 | cx->blk_sub.cv = cv; |
1a5b3db4 | 2938 | cx->blk_sub.olddepth = CvDEPTH(cv); |
dd2155a4 | 2939 | |
a0d0e21e LW |
2940 | CvDEPTH(cv)++; |
2941 | if (CvDEPTH(cv) < 2) | |
74c765eb | 2942 | SvREFCNT_inc_simple_void_NN(cv); |
dd2155a4 | 2943 | else { |
2b9dff67 | 2944 | if (CvDEPTH(cv) == PERL_SUB_DEPTH_WARN && ckWARN(WARN_RECURSION)) |
44a8e56a | 2945 | sub_crush_depth(cv); |
26019298 | 2946 | pad_push(padlist, CvDEPTH(cv)); |
a0d0e21e | 2947 | } |
426a09cd | 2948 | PL_curcop = cx->blk_oldcop; |
fd617465 DM |
2949 | SAVECOMPPAD(); |
2950 | PAD_SET_CUR_NOSAVE(padlist, CvDEPTH(cv)); | |
bafb2adc | 2951 | if (CxHASARGS(cx)) |
6d4ff0d2 | 2952 | { |
502c6561 | 2953 | AV *const av = MUTABLE_AV(PAD_SVl(0)); |
a0d0e21e | 2954 | |
3280af22 | 2955 | cx->blk_sub.savearray = GvAV(PL_defgv); |
502c6561 | 2956 | GvAV(PL_defgv) = MUTABLE_AV(SvREFCNT_inc_simple(av)); |
dd2155a4 | 2957 | CX_CURPAD_SAVE(cx->blk_sub); |
6d4ff0d2 | 2958 | cx->blk_sub.argarray = av; |
a0d0e21e LW |
2959 | |
2960 | if (items >= AvMAX(av) + 1) { | |
b37c2d43 | 2961 | SV **ary = AvALLOC(av); |
a0d0e21e LW |
2962 | if (AvARRAY(av) != ary) { |
2963 | AvMAX(av) += AvARRAY(av) - AvALLOC(av); | |
9c6bc640 | 2964 | AvARRAY(av) = ary; |
a0d0e21e LW |
2965 | } |
2966 | if (items >= AvMAX(av) + 1) { | |
2967 | AvMAX(av) = items - 1; | |
2968 | Renew(ary,items+1,SV*); | |
2969 | AvALLOC(av) = ary; | |
9c6bc640 | 2970 | AvARRAY(av) = ary; |
a0d0e21e LW |
2971 | } |
2972 | } | |
a45cdc79 | 2973 | ++mark; |
a0d0e21e | 2974 | Copy(mark,AvARRAY(av),items,SV*); |
93965878 | 2975 | AvFILLp(av) = items - 1; |
d8b46c1b | 2976 | assert(!AvREAL(av)); |
b1464ded DM |
2977 | if (reified) { |
2978 | /* transfer 'ownership' of refcnts to new @_ */ | |
2979 | AvREAL_on(av); | |
2980 | AvREIFY_off(av); | |
2981 | } | |
a0d0e21e LW |
2982 | while (items--) { |
2983 | if (*mark) | |
2984 | SvTEMP_off(*mark); | |
2985 | mark++; | |
2986 | } | |
2987 | } | |
491527d0 | 2988 | if (PERLDB_SUB) { /* Checking curstash breaks DProf. */ |
005a8a35 | 2989 | Perl_get_db_sub(aTHX_ NULL, cv); |
b37c2d43 | 2990 | if (PERLDB_GOTO) { |
b96d8cd9 | 2991 | CV * const gotocv = get_cvs("DB::goto", 0); |
b37c2d43 AL |
2992 | if (gotocv) { |
2993 | PUSHMARK( PL_stack_sp ); | |
ad64d0ec | 2994 | call_sv(MUTABLE_SV(gotocv), G_SCALAR | G_NODEBUG); |
b37c2d43 AL |
2995 | PL_stack_sp--; |
2996 | } | |
491527d0 | 2997 | } |
1ce6579f | 2998 | } |
a0d0e21e LW |
2999 | RETURNOP(CvSTART(cv)); |
3000 | } | |
3001 | } | |
1614b0e3 | 3002 | else { |
0510663f | 3003 | label = SvPV_nolen_const(sv); |
1614b0e3 | 3004 | if (!(do_dump || *label)) |
cea2e8a9 | 3005 | DIE(aTHX_ must_have_label); |
1614b0e3 | 3006 | } |
a0d0e21e | 3007 | } |
533c011a | 3008 | else if (PL_op->op_flags & OPf_SPECIAL) { |
a0d0e21e | 3009 | if (! do_dump) |
cea2e8a9 | 3010 | DIE(aTHX_ must_have_label); |
a0d0e21e LW |
3011 | } |
3012 | else | |
3013 | label = cPVOP->op_pv; | |
3014 | ||
f410a211 NC |
3015 | PERL_ASYNC_CHECK(); |
3016 | ||
a0d0e21e | 3017 | if (label && *label) { |
cbbf8932 | 3018 | OP *gotoprobe = NULL; |
3b2447bc | 3019 | bool leaving_eval = FALSE; |
33d34e4c | 3020 | bool in_block = FALSE; |
cbbf8932 | 3021 | PERL_CONTEXT *last_eval_cx = NULL; |
a0d0e21e LW |
3022 | |
3023 | /* find label */ | |
3024 | ||
d4c19fe8 | 3025 | PL_lastgotoprobe = NULL; |
a0d0e21e LW |
3026 | *enterops = 0; |
3027 | for (ix = cxstack_ix; ix >= 0; ix--) { | |
3028 | cx = &cxstack[ix]; | |
6b35e009 | 3029 | switch (CxTYPE(cx)) { |
a0d0e21e | 3030 | case CXt_EVAL: |
3b2447bc | 3031 | leaving_eval = TRUE; |
971ecbe6 | 3032 | if (!CxTRYBLOCK(cx)) { |
a4f3a277 RH |
3033 | gotoprobe = (last_eval_cx ? |
3034 | last_eval_cx->blk_eval.old_eval_root : | |
3035 | PL_eval_root); | |
3036 | last_eval_cx = cx; | |
9c5794fe RH |
3037 | break; |
3038 | } | |
3039 | /* else fall through */ | |
c6fdafd0 | 3040 | case CXt_LOOP_LAZYIV: |
d01136d6 | 3041 | case CXt_LOOP_LAZYSV: |
3b719c58 NC |
3042 | case CXt_LOOP_FOR: |
3043 | case CXt_LOOP_PLAIN: | |
bb5aedc1 VP |
3044 | case CXt_GIVEN: |
3045 | case CXt_WHEN: | |
a0d0e21e LW |
3046 | gotoprobe = cx->blk_oldcop->op_sibling; |
3047 | break; | |
3048 | case CXt_SUBST: | |
3049 | continue; | |
3050 | case CXt_BLOCK: | |
33d34e4c | 3051 | if (ix) { |
a0d0e21e | 3052 | gotoprobe = cx->blk_oldcop->op_sibling; |
33d34e4c AE |
3053 | in_block = TRUE; |
3054 | } else | |
3280af22 | 3055 | gotoprobe = PL_main_root; |
a0d0e21e | 3056 | break; |
b3933176 | 3057 | case CXt_SUB: |
9850bf21 | 3058 | if (CvDEPTH(cx->blk_sub.cv) && !CxMULTICALL(cx)) { |
b3933176 CS |
3059 | gotoprobe = CvROOT(cx->blk_sub.cv); |
3060 | break; | |
3061 | } | |
3062 | /* FALL THROUGH */ | |
7766f137 | 3063 | case CXt_FORMAT: |
0a753a76 | 3064 | case CXt_NULL: |
a651a37d | 3065 | DIE(aTHX_ "Can't \"goto\" out of a pseudo block"); |
a0d0e21e LW |
3066 | default: |
3067 | if (ix) | |
5637ef5b NC |
3068 | DIE(aTHX_ "panic: goto, type=%u, ix=%ld", |
3069 | CxTYPE(cx), (long) ix); | |
3280af22 | 3070 | gotoprobe = PL_main_root; |
a0d0e21e LW |
3071 | break; |
3072 | } | |
2b597662 GS |
3073 | if (gotoprobe) { |
3074 | retop = dofindlabel(gotoprobe, label, | |
3075 | enterops, enterops + GOTO_DEPTH); | |
3076 | if (retop) | |
3077 | break; | |
eae48c89 Z |
3078 | if (gotoprobe->op_sibling && |
3079 | gotoprobe->op_sibling->op_type == OP_UNSTACK && | |
3080 | gotoprobe->op_sibling->op_sibling) { | |
3081 | retop = dofindlabel(gotoprobe->op_sibling->op_sibling, | |
3082 | label, enterops, enterops + GOTO_DEPTH); | |
3083 | if (retop) | |
3084 | break; | |
3085 | } | |
2b597662 | 3086 | } |
3280af22 | 3087 | PL_lastgotoprobe = gotoprobe; |
a0d0e21e LW |
3088 | } |
3089 | if (!retop) | |
cea2e8a9 | 3090 | DIE(aTHX_ "Can't find label %s", label); |
a0d0e21e | 3091 | |
3b2447bc RH |
3092 | /* if we're leaving an eval, check before we pop any frames |
3093 | that we're not going to punt, otherwise the error | |
3094 | won't be caught */ | |
3095 | ||
3096 | if (leaving_eval && *enterops && enterops[1]) { | |
3097 | I32 i; | |
3098 | for (i = 1; enterops[i]; i++) | |
3099 | if (enterops[i]->op_type == OP_ENTERITER) | |
3100 | DIE(aTHX_ "Can't \"goto\" into the middle of a foreach loop"); | |
3101 | } | |
3102 | ||
b500e03b GG |
3103 | if (*enterops && enterops[1]) { |
3104 | I32 i = enterops[1]->op_type == OP_ENTER && in_block ? 2 : 1; | |
3105 | if (enterops[i]) | |
3106 | deprecate("\"goto\" to jump into a construct"); | |
3107 | } | |
3108 | ||
a0d0e21e LW |
3109 | /* pop unwanted frames */ |
3110 | ||
3111 | if (ix < cxstack_ix) { | |
3112 | I32 oldsave; | |
3113 | ||
3114 | if (ix < 0) | |
3115 | ix = 0; | |
3116 | dounwind(ix); | |
3117 | TOPBLOCK(cx); | |
3280af22 | 3118 | oldsave = PL_scopestack[PL_scopestack_ix]; |
a0d0e21e LW |
3119 | LEAVE_SCOPE(oldsave); |
3120 | } | |
3121 | ||
3122 | /* push wanted frames */ | |
3123 | ||
748a9306 | 3124 | if (*enterops && enterops[1]) { |
0bd48802 | 3125 | OP * const oldop = PL_op; |
33d34e4c AE |
3126 | ix = enterops[1]->op_type == OP_ENTER && in_block ? 2 : 1; |
3127 | for (; enterops[ix]; ix++) { | |
533c011a | 3128 | PL_op = enterops[ix]; |
84902520 TB |
3129 | /* Eventually we may want to stack the needed arguments |
3130 | * for each op. For now, we punt on the hard ones. */ | |
533c011a | 3131 | if (PL_op->op_type == OP_ENTERITER) |
894356b3 | 3132 | DIE(aTHX_ "Can't \"goto\" into the middle of a foreach loop"); |
16c91539 | 3133 | PL_op->op_ppaddr(aTHX); |
a0d0e21e | 3134 | } |
533c011a | 3135 | PL_op = oldop; |
a0d0e21e LW |
3136 | } |
3137 | } | |
3138 | ||
3139 | if (do_dump) { | |
a5f75d66 | 3140 | #ifdef VMS |
6b88bc9c | 3141 | if (!retop) retop = PL_main_start; |
a5f75d66 | 3142 | #endif |
3280af22 NIS |
3143 | PL_restartop = retop; |
3144 | PL_do_undump = TRUE; | |
a0d0e21e LW |
3145 | |
3146 | my_unexec(); | |
3147 | ||
3280af22 NIS |
3148 | PL_restartop = 0; /* hmm, must be GNU unexec().. */ |
3149 | PL_do_undump = FALSE; | |
a0d0e21e LW |
3150 | } |
3151 | ||
3152 | RETURNOP(retop); | |
3153 | } | |
3154 | ||
3155 | PP(pp_exit) | |
3156 | { | |
97aff369 | 3157 | dVAR; |
39644a26 | 3158 | dSP; |
a0d0e21e LW |
3159 | I32 anum; |
3160 | ||
3161 | if (MAXARG < 1) | |
3162 | anum = 0; | |
9d3c658e FC |
3163 | else if (!TOPs) { |
3164 | anum = 0; (void)POPs; | |
3165 | } | |
ff0cee69 | 3166 | else { |
a0d0e21e | 3167 | anum = SvIVx(POPs); |
d98f61e7 GS |
3168 | #ifdef VMS |
3169 | if (anum == 1 && (PL_op->op_private & OPpEXIT_VMSISH)) | |
ff0cee69 | 3170 | anum = 0; |
96e176bf | 3171 | VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH); |
ff0cee69 | 3172 | #endif |
3173 | } | |
cc3604b1 | 3174 | PL_exit_flags |= PERL_EXIT_EXPECTED; |
81d86705 NC |
3175 | #ifdef PERL_MAD |
3176 | /* KLUDGE: disable exit 0 in BEGIN blocks when we're just compiling */ | |
3177 | if (anum || !(PL_minus_c && PL_madskills)) | |
3178 | my_exit(anum); | |
3179 | #else | |
a0d0e21e | 3180 | my_exit(anum); |
81d86705 | 3181 | #endif |
3280af22 | 3182 | PUSHs(&PL_sv_undef); |
a0d0e21e LW |
3183 | RETURN; |
3184 | } | |
3185 | ||
a0d0e21e LW |
3186 | /* Eval. */ |
3187 | ||
0824fdcb | 3188 | STATIC void |
cea2e8a9 | 3189 | S_save_lines(pTHX_ AV *array, SV *sv) |
a0d0e21e | 3190 | { |
504618e9 | 3191 | const char *s = SvPVX_const(sv); |
890ce7af | 3192 | const char * const send = SvPVX_const(sv) + SvCUR(sv); |
504618e9 | 3193 | I32 line = 1; |
a0d0e21e | 3194 | |
7918f24d NC |
3195 | PERL_ARGS_ASSERT_SAVE_LINES; |
3196 | ||
a0d0e21e | 3197 | while (s && s < send) { |
f54cb97a | 3198 | const char *t; |
b9f83d2f | 3199 | SV * const tmpstr = newSV_type(SVt_PVMG); |
a0d0e21e | 3200 | |
1d963ff3 | 3201 | t = (const char *)memchr(s, '\n', send - s); |
a0d0e21e LW |
3202 | if (t) |
3203 | t++; | |
3204 | else | |
3205 | t = send; | |
3206 | ||
3207 | sv_setpvn(tmpstr, s, t - s); | |
3208 | av_store(array, line++, tmpstr); | |
3209 | s = t; | |
3210 | } | |
3211 | } | |
3212 | ||
22f16304 RU |
3213 | /* |
3214 | =for apidoc docatch | |
3215 | ||
3216 | Check for the cases 0 or 3 of cur_env.je_ret, only used inside an eval context. | |
3217 | ||
3218 | 0 is used as continue inside eval, | |
3219 | ||
3220 | 3 is used for a die caught by an inner eval - continue inner loop | |
3221 | ||
3222 | See cop.h: je_mustcatch, when set at any runlevel to TRUE, means eval ops must | |
3223 | establish a local jmpenv to handle exception traps. | |
3224 | ||
3225 | =cut | |
3226 | */ | |
0824fdcb | 3227 | STATIC OP * |
cea2e8a9 | 3228 | S_docatch(pTHX_ OP *o) |
1e422769 | 3229 | { |
97aff369 | 3230 | dVAR; |
6224f72b | 3231 | int ret; |
06b5626a | 3232 | OP * const oldop = PL_op; |
db36c5a1 | 3233 | dJMPENV; |
1e422769 | 3234 | |
1e422769 | 3235 | #ifdef DEBUGGING |
54310121 | 3236 | assert(CATCH_GET == TRUE); |
1e422769 | 3237 | #endif |
312caa8e | 3238 | PL_op = o; |
8bffa5f8 | 3239 | |
14dd3ad8 | 3240 | JMPENV_PUSH(ret); |
6224f72b | 3241 | switch (ret) { |
312caa8e | 3242 | case 0: |
abd70938 DM |
3243 | assert(cxstack_ix >= 0); |
3244 | assert(CxTYPE(&cxstack[cxstack_ix]) == CXt_EVAL); | |
3245 | cxstack[cxstack_ix].blk_eval.cur_top_env = PL_top_env; | |
14dd3ad8 | 3246 | redo_body: |
85aaa934 | 3247 | CALLRUNOPS(aTHX); |
312caa8e CS |
3248 | break; |
3249 | case 3: | |
8bffa5f8 | 3250 | /* die caught by an inner eval - continue inner loop */ |
febb3a6d Z |
3251 | if (PL_restartop && PL_restartjmpenv == PL_top_env) { |
3252 | PL_restartjmpenv = NULL; | |
312caa8e CS |
3253 | PL_op = PL_restartop; |
3254 | PL_restartop = 0; | |
3255 | goto redo_body; | |
3256 | } | |
3257 | /* FALL THROUGH */ | |
3258 | default: | |
14dd3ad8 | 3259 | JMPENV_POP; |
533c011a | 3260 | PL_op = oldop; |
6224f72b | 3261 | JMPENV_JUMP(ret); |
1e422769 | 3262 | /* NOTREACHED */ |
1e422769 | 3263 | } |
14dd3ad8 | 3264 | JMPENV_POP; |
533c011a | 3265 | PL_op = oldop; |
5f66b61c | 3266 | return NULL; |
1e422769 | 3267 | } |
3268 | ||
ee23ad3b NC |
3269 | /* James Bond: Do you expect me to talk? |
3270 | Auric Goldfinger: No, Mr. Bond. I expect you to die. | |
3271 | ||
3272 | This code is an ugly hack, doesn't work with lexicals in subroutines that are | |
3273 | called more than once, and is only used by regcomp.c, for (?{}) blocks. | |
3274 | ||
3275 | Currently it is not used outside the core code. Best if it stays that way. | |
d59a8b3e NC |
3276 | |
3277 | Hence it's now deprecated, and will be removed. | |
ee23ad3b | 3278 | */ |
c277df42 | 3279 | OP * |
bfed75c6 | 3280 | Perl_sv_compile_2op(pTHX_ SV *sv, OP** startop, const char *code, PAD** padp) |
c277df42 IZ |
3281 | /* sv Text to convert to OP tree. */ |
3282 | /* startop op_free() this to undo. */ | |
3283 | /* code Short string id of the caller. */ | |
3284 | { | |
d59a8b3e NC |
3285 | PERL_ARGS_ASSERT_SV_COMPILE_2OP; |
3286 | return Perl_sv_compile_2op_is_broken(aTHX_ sv, startop, code, padp); | |
3287 | } | |
3288 | ||
3289 | /* Don't use this. It will go away without warning once the regexp engine is | |
3290 | refactored not to use it. */ | |
3291 | OP * | |
3292 | Perl_sv_compile_2op_is_broken(pTHX_ SV *sv, OP **startop, const char *code, | |
3293 | PAD **padp) | |
3294 | { | |
27da23d5 | 3295 | dVAR; dSP; /* Make POPBLOCK work. */ |
c277df42 IZ |
3296 | PERL_CONTEXT *cx; |
3297 | SV **newsp; | |
b094c71d | 3298 | I32 gimme = G_VOID; |
c277df42 IZ |
3299 | I32 optype; |
3300 | OP dummy; | |
83ee9e09 GS |
3301 | char tbuf[TYPE_DIGITS(long) + 12 + 10]; |
3302 | char *tmpbuf = tbuf; | |
c277df42 | 3303 | char *safestr; |
a3985cdc | 3304 | int runtime; |
601f1833 | 3305 | CV* runcv = NULL; /* initialise to avoid compiler warnings */ |
f7997f86 | 3306 | STRLEN len; |
634d6919 | 3307 | bool need_catch; |
c277df42 | 3308 | |
d59a8b3e | 3309 | PERL_ARGS_ASSERT_SV_COMPILE_2OP_IS_BROKEN; |
7918f24d | 3310 | |
d343c3ef | 3311 | ENTER_with_name("eval"); |
27fcb6ee | 3312 | lex_start(sv, NULL, LEX_START_SAME_FILTER); |
c277df42 IZ |
3313 | SAVETMPS; |
3314 | /* switch to eval mode */ | |
3315 | ||
923e4eb5 | 3316 | if (IN_PERL_COMPILETIME) { |
f4dd75d9 | 3317 | SAVECOPSTASH_FREE(&PL_compiling); |
11faa288 | 3318 | CopSTASH_set(&PL_compiling, PL_curstash); |
cbce877f | 3319 | } |
83ee9e09 | 3320 | if (PERLDB_NAMEEVAL && CopLINE(PL_curcop)) { |
9d4ba2ae | 3321 | SV * const sv = sv_newmortal(); |
83ee9e09 GS |
3322 | Perl_sv_setpvf(aTHX_ sv, "_<(%.10seval %lu)[%s:%"IVdf"]", |
3323 | code, (unsigned long)++PL_evalseq, | |
3324 | CopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); | |
3325 | tmpbuf = SvPVX(sv); | |
fc009855 | 3326 | len = SvCUR(sv); |
83ee9e09 GS |
3327 | } |
3328 | else | |
d9fad198 JH |
3329 | len = my_snprintf(tmpbuf, sizeof(tbuf), "_<(%.10s_eval %lu)", code, |
3330 | (unsigned long)++PL_evalseq); | |
f4dd75d9 | 3331 | SAVECOPFILE_FREE(&PL_compiling); |
57843af0 | 3332 | CopFILE_set(&PL_compiling, tmpbuf+2); |
f4dd75d9 | 3333 | SAVECOPLINE(&PL_compiling); |
57843af0 | 3334 | CopLINE_set(&PL_compiling, 1); |
c277df42 IZ |
3335 | /* XXX For C<eval "...">s within BEGIN {} blocks, this ends up |
3336 | deleting the eval's FILEGV from the stash before gv_check() runs | |
3337 | (i.e. before run-time proper). To work around the coredump that | |
3338 | ensues, we always turn GvMULTI_on for any globals that were | |
3339 | introduced within evals. See force_ident(). GSAR 96-10-12 */ | |
f7997f86 NC |
3340 | safestr = savepvn(tmpbuf, len); |
3341 | SAVEDELETE(PL_defstash, safestr, len); | |
b3ac6de7 | 3342 | SAVEHINTS(); |
d1ca3daa | 3343 | #ifdef OP_IN_REGISTER |
6b88bc9c | 3344 | PL_opsave = op; |
d1ca3daa | 3345 | #else |
7766f137 | 3346 | SAVEVPTR(PL_op); |
d1ca3daa | 3347 | #endif |
c277df42 | 3348 | |
a3985cdc | 3349 | /* we get here either during compilation, or via pp_regcomp at runtime */ |
923e4eb5 | 3350 | runtime = IN_PERL_RUNTIME; |
a3985cdc | 3351 | if (runtime) |
558b4424 | 3352 | { |
d819b83a | 3353 | runcv = find_runcv(NULL); |
a3985cdc | 3354 | |
558b4424 FC |
3355 | /* At run time, we have to fetch the hints from PL_curcop. */ |
3356 | PL_hints = PL_curcop->cop_hints; | |
3357 | if (PL_hints & HINT_LOCALIZE_HH) { | |
3358 | /* SAVEHINTS created a new HV in PL_hintgv, which we | |
3359 | need to GC */ | |
3360 | SvREFCNT_dec(GvHV(PL_hintgv)); | |
3361 | GvHV(PL_hintgv) = | |
3362 | refcounted_he_chain_2hv(PL_curcop->cop_hints_hash, 0); | |
3363 | hv_magic(GvHV(PL_hintgv), NULL, PERL_MAGIC_hints); | |
3364 | } | |
3365 | SAVECOMPILEWARNINGS(); | |
3366 | PL_compiling.cop_warnings = DUP_WARNINGS(PL_curcop->cop_warnings); | |
3367 | cophh_free(CopHINTHASH_get(&PL_compiling)); | |
3368 | /* XXX Does this need to avoid copying a label? */ | |
3369 | PL_compiling.cop_hints_hash | |
3370 | = cophh_copy(PL_curcop->cop_hints_hash); | |
3371 | } | |
3372 | ||
533c011a | 3373 | PL_op = &dummy; |
13b51b79 | 3374 | PL_op->op_type = OP_ENTEREVAL; |
533c011a | 3375 | PL_op->op_flags = 0; /* Avoid uninit warning. */ |
923e4eb5 | 3376 | PUSHBLOCK(cx, CXt_EVAL|(IN_PERL_COMPILETIME ? 0 : CXp_REAL), SP); |
6b75f042 | 3377 | PUSHEVAL(cx, 0); |
634d6919 GG |
3378 | need_catch = CATCH_GET; |
3379 | CATCH_SET(TRUE); | |
a3985cdc DM |
3380 | |
3381 | if (runtime) | |
f45b078d | 3382 | (void) doeval(G_SCALAR, startop, runcv, PL_curcop->cop_seq, NULL); |
a3985cdc | 3383 | else |
f45b078d | 3384 | (void) doeval(G_SCALAR, startop, PL_compcv, PL_cop_seqmax, NULL); |
634d6919 | 3385 | CATCH_SET(need_catch); |
13b51b79 | 3386 | POPBLOCK(cx,PL_curpm); |
e84b9f1f | 3387 | POPEVAL(cx); |
c277df42 IZ |
3388 | |
3389 | (*startop)->op_type = OP_NULL; | |
22c35a8c | 3390 | (*startop)->op_ppaddr = PL_ppaddr[OP_NULL]; |
f3548bdc | 3391 | /* XXX DAPM do this properly one year */ |
502c6561 | 3392 | *padp = MUTABLE_AV(SvREFCNT_inc_simple(PL_comppad)); |
d343c3ef | 3393 | LEAVE_with_name("eval"); |
923e4eb5 | 3394 | if (IN_PERL_COMPILETIME) |
623e6609 | 3395 | CopHINTS_set(&PL_compiling, PL_hints); |
d1ca3daa | 3396 | #ifdef OP_IN_REGISTER |
6b88bc9c | 3397 | op = PL_opsave; |
d1ca3daa | 3398 | #endif |
9d4ba2ae AL |
3399 | PERL_UNUSED_VAR(newsp); |
3400 | PERL_UNUSED_VAR(optype); | |
3401 | ||
410be5db | 3402 | return PL_eval_start; |
c277df42 IZ |
3403 | } |
3404 | ||
a3985cdc DM |
3405 | |
3406 | /* | |
3407 | =for apidoc find_runcv | |
3408 | ||
3409 | Locate the CV corresponding to the currently executing sub or eval. | |
d819b83a DM |
3410 | If db_seqp is non_null, skip CVs that are in the DB package and populate |
3411 | *db_seqp with the cop sequence number at the point that the DB:: code was | |
3412 | entered. (allows debuggers to eval in the scope of the breakpoint rather | |
cf525c36 | 3413 | than in the scope of the debugger itself). |
a3985cdc DM |
3414 | |
3415 | =cut | |
3416 | */ | |
3417 | ||
3418 | CV* | |
d819b83a | 3419 | Perl_find_runcv(pTHX_ U32 *db_seqp) |
a3985cdc | 3420 | { |
97aff369 | 3421 | dVAR; |
a3985cdc | 3422 | PERL_SI *si; |
a3985cdc | 3423 | |
d819b83a DM |
3424 | if (db_seqp) |
3425 | *db_seqp = PL_curcop->cop_seq; | |
a3985cdc | 3426 | for (si = PL_curstackinfo; si; si = si->si_prev) { |
06b5626a | 3427 | I32 ix; |
a3985cdc | 3428 | for (ix = si->si_cxix; ix >= 0; ix--) { |
06b5626a | 3429 | const PERL_CONTEXT *cx = &(si->si_cxstack[ix]); |
d819b83a | 3430 | if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) { |
1b6737cc | 3431 | CV * const cv = cx->blk_sub.cv; |
d819b83a DM |
3432 | /* skip DB:: code */ |
3433 | if (db_seqp && PL_debstash && CvSTASH(cv) == PL_debstash) { | |
3434 | *db_seqp = cx->blk_oldcop->cop_seq; | |
3435 | continue; | |
3436 | } | |
3437 | return cv; | |
3438 | } | |
a3985cdc | 3439 | else if (CxTYPE(cx) == CXt_EVAL && !CxTRYBLOCK(cx)) |
676a678a | 3440 | return cx->blk_eval.cv; |
a3985cdc DM |
3441 | } |