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 | } |
a9984b10 | 133 | sv_catsv_nomg(tmpstr, msv); |
131b3ad0 DM |
134 | } |
135 | SvSETMAGIC(tmpstr); | |
136 | SP = ORIGMARK; | |
137 | } | |
d4b87e75 | 138 | else { |
131b3ad0 | 139 | tmpstr = POPs; |
d4b87e75 BM |
140 | tryAMAGICregexp(tmpstr); |
141 | } | |
142 | ||
143 | #undef tryAMAGICregexp | |
513629ba | 144 | |
b3eb6a9b | 145 | if (SvROK(tmpstr)) { |
d8f6592e | 146 | SV * const sv = SvRV(tmpstr); |
5c35adbb | 147 | if (SvTYPE(sv) == SVt_REGEXP) |
d2f13c59 | 148 | re = (REGEXP*) sv; |
c277df42 | 149 | } |
d4b87e75 BM |
150 | else if (SvTYPE(tmpstr) == SVt_REGEXP) |
151 | re = (REGEXP*) tmpstr; | |
152 | ||
5c35adbb | 153 | if (re) { |
69dc4b30 FC |
154 | /* The match's LHS's get-magic might need to access this op's reg- |
155 | exp (as is sometimes the case with $'; see bug 70764). So we | |
156 | must call get-magic now before we replace the regexp. Hopeful- | |
157 | ly this hack can be replaced with the approach described at | |
158 | http://www.nntp.perl.org/group/perl.perl5.porters/2007/03 | |
159 | /msg122415.html some day. */ | |
455d9033 FC |
160 | if(pm->op_type == OP_MATCH) { |
161 | SV *lhs; | |
162 | const bool was_tainted = PL_tainted; | |
163 | if (pm->op_flags & OPf_STACKED) | |
69dc4b30 | 164 | lhs = TOPs; |
455d9033 FC |
165 | else if (pm->op_private & OPpTARGET_MY) |
166 | lhs = PAD_SV(pm->op_targ); | |
167 | else lhs = DEFSV; | |
168 | SvGETMAGIC(lhs); | |
169 | /* Restore the previous value of PL_tainted (which may have been | |
170 | modified by get-magic), to avoid incorrectly setting the | |
171 | RXf_TAINTED flag further down. */ | |
172 | PL_tainted = was_tainted; | |
173 | } | |
69dc4b30 | 174 | |
f0826785 | 175 | re = reg_temp_copy(NULL, re); |
aaa362c4 | 176 | ReREFCNT_dec(PM_GETRE(pm)); |
28d8d7f4 | 177 | PM_SETRE(pm, re); |
c277df42 IZ |
178 | } |
179 | else { | |
f3ec07c7 DM |
180 | STRLEN len = 0; |
181 | const char *t = SvOK(tmpstr) ? SvPV_nomg_const(tmpstr, len) : ""; | |
182 | ||
c737faaf | 183 | re = PM_GETRE(pm); |
14a49a24 | 184 | assert (re != (REGEXP*) &PL_sv_undef); |
c277df42 | 185 | |
20408e3c | 186 | /* Check against the last compiled regexp. */ |
a11c8683 | 187 | if (!re || !RX_PRECOMP(re) || RX_PRELEN(re) != len || |
220fc49f | 188 | memNE(RX_PRECOMP(re), t, len)) |
85aff577 | 189 | { |
07bc277f | 190 | const regexp_engine *eng = re ? RX_ENGINE(re) : NULL; |
73134a2e | 191 | U32 pm_flags = pm->op_pmflags & RXf_PMf_COMPILETIME; |
d8f6592e AL |
192 | if (re) { |
193 | ReREFCNT_dec(re); | |
14a49a24 NC |
194 | #ifdef USE_ITHREADS |
195 | PM_SETRE(pm, (REGEXP*) &PL_sv_undef); | |
196 | #else | |
4608196e | 197 | PM_SETRE(pm, NULL); /* crucial if regcomp aborts */ |
14a49a24 | 198 | #endif |
1e2e3d02 | 199 | } else if (PL_curcop->cop_hints_hash) { |
20439bc7 | 200 | SV *ptr = cop_hints_fetch_pvs(PL_curcop, "regcomp", 0); |
1e2e3d02 YO |
201 | if (ptr && SvIOK(ptr) && SvIV(ptr)) |
202 | eng = INT2PTR(regexp_engine*,SvIV(ptr)); | |
c277df42 | 203 | } |
664e119d | 204 | |
533c011a | 205 | if (PL_op->op_flags & OPf_SPECIAL) |
3280af22 | 206 | PL_reginterp_cnt = I32_MAX; /* Mark as safe. */ |
a0d0e21e | 207 | |
15d9c083 | 208 | if (!DO_UTF8(tmpstr) && SvUTF8(tmpstr)) { |
b9ad30b4 NC |
209 | /* Not doing UTF-8, despite what the SV says. Is this only if |
210 | we're trapped in use 'bytes'? */ | |
211 | /* Make a copy of the octet sequence, but without the flag on, | |
212 | as the compiler now honours the SvUTF8 flag on tmpstr. */ | |
213 | STRLEN len; | |
214 | const char *const p = SvPV(tmpstr, len); | |
215 | tmpstr = newSVpvn_flags(p, len, SVs_TEMP); | |
216 | } | |
3e102237 | 217 | else if (SvAMAGIC(tmpstr) || SvGMAGICAL(tmpstr)) { |
f3ec07c7 | 218 | /* make a copy to avoid extra stringifies */ |
0479a84a | 219 | tmpstr = newSVpvn_flags(t, len, SVs_TEMP | SvUTF8(tmpstr)); |
f3ec07c7 | 220 | } |
c737faaf | 221 | |
5a8697a7 | 222 | if (eng) |
3ab4a224 | 223 | PM_SETRE(pm, CALLREGCOMP_ENG(eng, tmpstr, pm_flags)); |
5a8697a7 | 224 | else |
3ab4a224 | 225 | PM_SETRE(pm, CALLREGCOMP(tmpstr, pm_flags)); |
c737faaf | 226 | |
f86aaa29 | 227 | PL_reginterp_cnt = 0; /* XXXX Be extra paranoid - needed |
2cd61cdb | 228 | inside tie/overload accessors. */ |
c277df42 | 229 | } |
4633a7c4 | 230 | } |
c737faaf YO |
231 | |
232 | re = PM_GETRE(pm); | |
a0d0e21e | 233 | |
72311751 | 234 | #ifndef INCOMPLETE_TAINTS |
3280af22 | 235 | if (PL_tainting) { |
9274aefd DM |
236 | if (PL_tainted) { |
237 | SvTAINTED_on((SV*)re); | |
07bc277f | 238 | RX_EXTFLAGS(re) |= RXf_TAINTED; |
9274aefd | 239 | } |
72311751 GS |
240 | } |
241 | #endif | |
242 | ||
220fc49f | 243 | if (!RX_PRELEN(PM_GETRE(pm)) && PL_curpm) |
3280af22 | 244 | pm = PL_curpm; |
a0d0e21e | 245 | |
c737faaf YO |
246 | |
247 | #if !defined(USE_ITHREADS) | |
248 | /* can't change the optree at runtime either */ | |
249 | /* PMf_KEEP is handled differently under threads to avoid these problems */ | |
a0d0e21e | 250 | if (pm->op_pmflags & PMf_KEEP) { |
c90c0ff4 | 251 | pm->op_private &= ~OPpRUNTIME; /* no point compiling again */ |
533c011a | 252 | cLOGOP->op_first->op_next = PL_op->op_next; |
a0d0e21e | 253 | } |
c737faaf | 254 | #endif |
a0d0e21e LW |
255 | RETURN; |
256 | } | |
257 | ||
258 | PP(pp_substcont) | |
259 | { | |
97aff369 | 260 | dVAR; |
39644a26 | 261 | dSP; |
c09156bb | 262 | register PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
901017d6 AL |
263 | register PMOP * const pm = (PMOP*) cLOGOP->op_other; |
264 | register SV * const dstr = cx->sb_dstr; | |
a0d0e21e LW |
265 | register char *s = cx->sb_s; |
266 | register char *m = cx->sb_m; | |
267 | char *orig = cx->sb_orig; | |
901017d6 | 268 | register REGEXP * const rx = cx->sb_rx; |
c445ea15 | 269 | SV *nsv = NULL; |
988e6e7e | 270 | REGEXP *old = PM_GETRE(pm); |
f410a211 NC |
271 | |
272 | PERL_ASYNC_CHECK(); | |
273 | ||
988e6e7e | 274 | if(old != rx) { |
bfed75c6 | 275 | if(old) |
988e6e7e | 276 | ReREFCNT_dec(old); |
d6106309 | 277 | PM_SETRE(pm,ReREFCNT_inc(rx)); |
d8f2cf8a AB |
278 | } |
279 | ||
d9f97599 | 280 | rxres_restore(&cx->sb_rxres, rx); |
01b35787 | 281 | RX_MATCH_UTF8_set(rx, DO_UTF8(cx->sb_targ)); |
c90c0ff4 | 282 | |
a0d0e21e | 283 | if (cx->sb_iters++) { |
a3b680e6 | 284 | const I32 saviters = cx->sb_iters; |
a0d0e21e | 285 | if (cx->sb_iters > cx->sb_maxiters) |
cea2e8a9 | 286 | DIE(aTHX_ "Substitution loop"); |
a0d0e21e | 287 | |
447ee134 DM |
288 | SvGETMAGIC(TOPs); /* possibly clear taint on $1 etc: #67962 */ |
289 | ||
ef07e810 | 290 | /* See "how taint works" above pp_subst() */ |
20be6587 DM |
291 | if (SvTAINTED(TOPs)) |
292 | cx->sb_rxtainted |= SUBST_TAINT_REPL; | |
447ee134 | 293 | sv_catsv_nomg(dstr, POPs); |
2c296965 YO |
294 | /* XXX: adjust for positive offsets of \G for instance s/(.)\G//g with positive pos() */ |
295 | s -= RX_GOFS(rx); | |
a0d0e21e LW |
296 | |
297 | /* Are we done */ | |
134b8cd8 NC |
298 | /* I believe that we can't set REXEC_SCREAM here if |
299 | SvSCREAM(cx->sb_targ) is true because SvPVX(cx->sb_targ) isn't always | |
300 | equal to s. [See the comment before Perl_re_intuit_start(), which is | |
301 | called from Perl_regexec_flags(), which says that it should be when | |
302 | SvSCREAM() is true.] s, cx->sb_strend and orig will be consistent | |
303 | with SvPVX(cx->sb_targ), as substconst doesn't modify cx->sb_targ | |
304 | during the match. */ | |
2c296965 YO |
305 | if (CxONCE(cx) || s < orig || |
306 | !CALLREGEXEC(rx, s, cx->sb_strend, orig, | |
307 | (s == m) + RX_GOFS(rx), cx->sb_targ, NULL, | |
308 | ((cx->sb_rflags & REXEC_COPY_STR) | |
309 | ? (REXEC_IGNOREPOS|REXEC_NOT_FIRST) | |
310 | : (REXEC_COPY_STR|REXEC_IGNOREPOS|REXEC_NOT_FIRST)))) | |
a0d0e21e | 311 | { |
8ca8a454 | 312 | SV *targ = cx->sb_targ; |
748a9306 | 313 | |
078c425b JH |
314 | assert(cx->sb_strend >= s); |
315 | if(cx->sb_strend > s) { | |
316 | if (DO_UTF8(dstr) && !SvUTF8(targ)) | |
317 | sv_catpvn_utf8_upgrade(dstr, s, cx->sb_strend - s, nsv); | |
318 | else | |
319 | sv_catpvn(dstr, s, cx->sb_strend - s); | |
320 | } | |
20be6587 DM |
321 | if (RX_MATCH_TAINTED(rx)) /* run time pattern taint, eg locale */ |
322 | cx->sb_rxtainted |= SUBST_TAINT_PAT; | |
9212bbba | 323 | |
8ca8a454 NC |
324 | if (pm->op_pmflags & PMf_NONDESTRUCT) { |
325 | PUSHs(dstr); | |
326 | /* From here on down we're using the copy, and leaving the | |
327 | original untouched. */ | |
328 | targ = dstr; | |
329 | } | |
330 | else { | |
8ca8a454 NC |
331 | if (SvIsCOW(targ)) { |
332 | sv_force_normal_flags(targ, SV_COW_DROP_PV); | |
333 | } else | |
8ca8a454 NC |
334 | { |
335 | SvPV_free(targ); | |
336 | } | |
337 | SvPV_set(targ, SvPVX(dstr)); | |
338 | SvCUR_set(targ, SvCUR(dstr)); | |
339 | SvLEN_set(targ, SvLEN(dstr)); | |
340 | if (DO_UTF8(dstr)) | |
341 | SvUTF8_on(targ); | |
342 | SvPV_set(dstr, NULL); | |
343 | ||
4f4d7508 | 344 | mPUSHi(saviters - 1); |
48c036b1 | 345 | |
8ca8a454 NC |
346 | (void)SvPOK_only_UTF8(targ); |
347 | } | |
5cd24f17 | 348 | |
20be6587 | 349 | /* update the taint state of various various variables in |
ef07e810 DM |
350 | * preparation for final exit. |
351 | * See "how taint works" above pp_subst() */ | |
20be6587 DM |
352 | if (PL_tainting) { |
353 | if ((cx->sb_rxtainted & SUBST_TAINT_PAT) || | |
354 | ((cx->sb_rxtainted & (SUBST_TAINT_STR|SUBST_TAINT_RETAINT)) | |
355 | == (SUBST_TAINT_STR|SUBST_TAINT_RETAINT)) | |
356 | ) | |
357 | (RX_MATCH_TAINTED_on(rx)); /* taint $1 et al */ | |
358 | ||
359 | if (!(cx->sb_rxtainted & SUBST_TAINT_BOOLRET) | |
360 | && (cx->sb_rxtainted & (SUBST_TAINT_STR|SUBST_TAINT_PAT)) | |
361 | ) | |
362 | SvTAINTED_on(TOPs); /* taint return value */ | |
363 | /* needed for mg_set below */ | |
364 | PL_tainted = cBOOL(cx->sb_rxtainted & | |
365 | (SUBST_TAINT_STR|SUBST_TAINT_PAT|SUBST_TAINT_REPL)); | |
366 | SvTAINT(TARG); | |
367 | } | |
368 | /* PL_tainted must be correctly set for this mg_set */ | |
369 | SvSETMAGIC(TARG); | |
370 | TAINT_NOT; | |
4633a7c4 | 371 | LEAVE_SCOPE(cx->sb_oldsave); |
a0d0e21e LW |
372 | POPSUBST(cx); |
373 | RETURNOP(pm->op_next); | |
20be6587 | 374 | /* NOTREACHED */ |
a0d0e21e | 375 | } |
8e5e9ebe | 376 | cx->sb_iters = saviters; |
a0d0e21e | 377 | } |
07bc277f | 378 | if (RX_MATCH_COPIED(rx) && RX_SUBBEG(rx) != orig) { |
a0d0e21e LW |
379 | m = s; |
380 | s = orig; | |
07bc277f | 381 | cx->sb_orig = orig = RX_SUBBEG(rx); |
a0d0e21e LW |
382 | s = orig + (m - s); |
383 | cx->sb_strend = s + (cx->sb_strend - m); | |
384 | } | |
07bc277f | 385 | cx->sb_m = m = RX_OFFS(rx)[0].start + orig; |
db79b45b | 386 | if (m > s) { |
bfed75c6 | 387 | if (DO_UTF8(dstr) && !SvUTF8(cx->sb_targ)) |
db79b45b JH |
388 | sv_catpvn_utf8_upgrade(dstr, s, m - s, nsv); |
389 | else | |
390 | sv_catpvn(dstr, s, m-s); | |
391 | } | |
07bc277f | 392 | cx->sb_s = RX_OFFS(rx)[0].end + orig; |
084916e3 | 393 | { /* Update the pos() information. */ |
8ca8a454 NC |
394 | SV * const sv |
395 | = (pm->op_pmflags & PMf_NONDESTRUCT) ? cx->sb_dstr : cx->sb_targ; | |
084916e3 | 396 | MAGIC *mg; |
7a7f3e45 | 397 | SvUPGRADE(sv, SVt_PVMG); |
14befaf4 | 398 | if (!(mg = mg_find(sv, PERL_MAGIC_regex_global))) { |
d83f0a82 | 399 | #ifdef PERL_OLD_COPY_ON_WRITE |
51a9ea20 | 400 | if (SvIsCOW(sv)) |
d83f0a82 NC |
401 | sv_force_normal_flags(sv, 0); |
402 | #endif | |
403 | mg = sv_magicext(sv, NULL, PERL_MAGIC_regex_global, &PL_vtbl_mglob, | |
404 | NULL, 0); | |
084916e3 | 405 | } |
ce474962 | 406 | mg->mg_len = m - orig; |
084916e3 | 407 | } |
988e6e7e | 408 | if (old != rx) |
d6106309 | 409 | (void)ReREFCNT_inc(rx); |
20be6587 | 410 | /* update the taint state of various various variables in preparation |
ef07e810 DM |
411 | * for calling the code block. |
412 | * See "how taint works" above pp_subst() */ | |
20be6587 DM |
413 | if (PL_tainting) { |
414 | if (RX_MATCH_TAINTED(rx)) /* run time pattern taint, eg locale */ | |
415 | cx->sb_rxtainted |= SUBST_TAINT_PAT; | |
416 | ||
417 | if ((cx->sb_rxtainted & SUBST_TAINT_PAT) || | |
418 | ((cx->sb_rxtainted & (SUBST_TAINT_STR|SUBST_TAINT_RETAINT)) | |
419 | == (SUBST_TAINT_STR|SUBST_TAINT_RETAINT)) | |
420 | ) | |
421 | (RX_MATCH_TAINTED_on(rx)); /* taint $1 et al */ | |
422 | ||
423 | if (cx->sb_iters > 1 && (cx->sb_rxtainted & | |
424 | (SUBST_TAINT_STR|SUBST_TAINT_PAT|SUBST_TAINT_REPL))) | |
8ca8a454 NC |
425 | SvTAINTED_on((pm->op_pmflags & PMf_NONDESTRUCT) |
426 | ? cx->sb_dstr : cx->sb_targ); | |
20be6587 DM |
427 | TAINT_NOT; |
428 | } | |
d9f97599 | 429 | rxres_save(&cx->sb_rxres, rx); |
af9838cc | 430 | PL_curpm = pm; |
29f2e912 | 431 | RETURNOP(pm->op_pmstashstartu.op_pmreplstart); |
a0d0e21e LW |
432 | } |
433 | ||
c90c0ff4 | 434 | void |
864dbfa3 | 435 | Perl_rxres_save(pTHX_ void **rsp, REGEXP *rx) |
c90c0ff4 | 436 | { |
437 | UV *p = (UV*)*rsp; | |
438 | U32 i; | |
7918f24d NC |
439 | |
440 | PERL_ARGS_ASSERT_RXRES_SAVE; | |
96a5add6 | 441 | PERL_UNUSED_CONTEXT; |
c90c0ff4 | 442 | |
07bc277f | 443 | if (!p || p[1] < RX_NPARENS(rx)) { |
f8c7b90f | 444 | #ifdef PERL_OLD_COPY_ON_WRITE |
07bc277f | 445 | i = 7 + RX_NPARENS(rx) * 2; |
ed252734 | 446 | #else |
07bc277f | 447 | i = 6 + RX_NPARENS(rx) * 2; |
ed252734 | 448 | #endif |
c90c0ff4 | 449 | if (!p) |
a02a5408 | 450 | Newx(p, i, UV); |
c90c0ff4 | 451 | else |
452 | Renew(p, i, UV); | |
453 | *rsp = (void*)p; | |
454 | } | |
455 | ||
07bc277f | 456 | *p++ = PTR2UV(RX_MATCH_COPIED(rx) ? RX_SUBBEG(rx) : NULL); |
cf93c79d | 457 | RX_MATCH_COPIED_off(rx); |
c90c0ff4 | 458 | |
f8c7b90f | 459 | #ifdef PERL_OLD_COPY_ON_WRITE |
bdd9a1b1 NC |
460 | *p++ = PTR2UV(RX_SAVED_COPY(rx)); |
461 | RX_SAVED_COPY(rx) = NULL; | |
ed252734 NC |
462 | #endif |
463 | ||
07bc277f | 464 | *p++ = RX_NPARENS(rx); |
c90c0ff4 | 465 | |
07bc277f NC |
466 | *p++ = PTR2UV(RX_SUBBEG(rx)); |
467 | *p++ = (UV)RX_SUBLEN(rx); | |
468 | for (i = 0; i <= RX_NPARENS(rx); ++i) { | |
469 | *p++ = (UV)RX_OFFS(rx)[i].start; | |
470 | *p++ = (UV)RX_OFFS(rx)[i].end; | |
c90c0ff4 | 471 | } |
472 | } | |
473 | ||
9c105995 NC |
474 | static void |
475 | S_rxres_restore(pTHX_ void **rsp, REGEXP *rx) | |
c90c0ff4 | 476 | { |
477 | UV *p = (UV*)*rsp; | |
478 | U32 i; | |
7918f24d NC |
479 | |
480 | PERL_ARGS_ASSERT_RXRES_RESTORE; | |
96a5add6 | 481 | PERL_UNUSED_CONTEXT; |
c90c0ff4 | 482 | |
ed252734 | 483 | RX_MATCH_COPY_FREE(rx); |
cf93c79d | 484 | RX_MATCH_COPIED_set(rx, *p); |
c90c0ff4 | 485 | *p++ = 0; |
486 | ||
f8c7b90f | 487 | #ifdef PERL_OLD_COPY_ON_WRITE |
bdd9a1b1 NC |
488 | if (RX_SAVED_COPY(rx)) |
489 | SvREFCNT_dec (RX_SAVED_COPY(rx)); | |
490 | RX_SAVED_COPY(rx) = INT2PTR(SV*,*p); | |
ed252734 NC |
491 | *p++ = 0; |
492 | #endif | |
493 | ||
07bc277f | 494 | RX_NPARENS(rx) = *p++; |
c90c0ff4 | 495 | |
07bc277f NC |
496 | RX_SUBBEG(rx) = INT2PTR(char*,*p++); |
497 | RX_SUBLEN(rx) = (I32)(*p++); | |
498 | for (i = 0; i <= RX_NPARENS(rx); ++i) { | |
499 | RX_OFFS(rx)[i].start = (I32)(*p++); | |
500 | RX_OFFS(rx)[i].end = (I32)(*p++); | |
c90c0ff4 | 501 | } |
502 | } | |
503 | ||
9c105995 NC |
504 | static void |
505 | S_rxres_free(pTHX_ void **rsp) | |
c90c0ff4 | 506 | { |
44f8325f | 507 | UV * const p = (UV*)*rsp; |
7918f24d NC |
508 | |
509 | PERL_ARGS_ASSERT_RXRES_FREE; | |
96a5add6 | 510 | PERL_UNUSED_CONTEXT; |
c90c0ff4 | 511 | |
512 | if (p) { | |
94010e71 NC |
513 | #ifdef PERL_POISON |
514 | void *tmp = INT2PTR(char*,*p); | |
515 | Safefree(tmp); | |
516 | if (*p) | |
7e337ee0 | 517 | PoisonFree(*p, 1, sizeof(*p)); |
94010e71 | 518 | #else |
56431972 | 519 | Safefree(INT2PTR(char*,*p)); |
94010e71 | 520 | #endif |
f8c7b90f | 521 | #ifdef PERL_OLD_COPY_ON_WRITE |
ed252734 NC |
522 | if (p[1]) { |
523 | SvREFCNT_dec (INT2PTR(SV*,p[1])); | |
524 | } | |
525 | #endif | |
c90c0ff4 | 526 | Safefree(p); |
4608196e | 527 | *rsp = NULL; |
c90c0ff4 | 528 | } |
529 | } | |
530 | ||
a701009a DM |
531 | #define FORM_NUM_BLANK (1<<30) |
532 | #define FORM_NUM_POINT (1<<29) | |
533 | ||
a0d0e21e LW |
534 | PP(pp_formline) |
535 | { | |
97aff369 | 536 | dVAR; dSP; dMARK; dORIGMARK; |
823a54a3 | 537 | register SV * const tmpForm = *++MARK; |
086b26f3 DM |
538 | SV *formsv; /* contains text of original format */ |
539 | register U32 *fpc; /* format ops program counter */ | |
540 | register char *t; /* current append position in target string */ | |
541 | const char *f; /* current position in format string */ | |
a0d0e21e | 542 | register I32 arg; |
086b26f3 DM |
543 | register SV *sv = NULL; /* current item */ |
544 | const char *item = NULL;/* string value of current item */ | |
545 | I32 itemsize = 0; /* length of current item, possibly truncated */ | |
546 | I32 fieldsize = 0; /* width of current field */ | |
547 | I32 lines = 0; /* number of lines that have been output */ | |
548 | bool chopspace = (strchr(PL_chopset, ' ') != NULL); /* does $: have space */ | |
549 | const char *chophere = NULL; /* where to chop current item */ | |
f5ada144 | 550 | STRLEN linemark = 0; /* pos of start of line in output */ |
65202027 | 551 | NV value; |
086b26f3 | 552 | bool gotsome = FALSE; /* seen at least one non-blank item on this line */ |
a0d0e21e | 553 | STRLEN len; |
26e935cf | 554 | STRLEN linemax; /* estimate of output size in bytes */ |
1bd51a4c IH |
555 | bool item_is_utf8 = FALSE; |
556 | bool targ_is_utf8 = FALSE; | |
bfed75c6 | 557 | const char *fmt; |
74e0ddf7 | 558 | MAGIC *mg = NULL; |
4ff700b9 DM |
559 | U8 *source; /* source of bytes to append */ |
560 | STRLEN to_copy; /* how may bytes to append */ | |
ea60cfe8 | 561 | char trans; /* what chars to translate */ |
74e0ddf7 | 562 | |
3808a683 | 563 | mg = doparseform(tmpForm); |
a0d0e21e | 564 | |
74e0ddf7 | 565 | fpc = (U32*)mg->mg_ptr; |
3808a683 DM |
566 | /* the actual string the format was compiled from. |
567 | * with overload etc, this may not match tmpForm */ | |
568 | formsv = mg->mg_obj; | |
569 | ||
74e0ddf7 | 570 | |
3280af22 | 571 | SvPV_force(PL_formtarget, len); |
3808a683 | 572 | if (SvTAINTED(tmpForm) || SvTAINTED(formsv)) |
125b9982 | 573 | SvTAINTED_on(PL_formtarget); |
1bd51a4c IH |
574 | if (DO_UTF8(PL_formtarget)) |
575 | targ_is_utf8 = TRUE; | |
26e935cf DM |
576 | linemax = (SvCUR(formsv) * (IN_BYTES ? 1 : 3) + 1); |
577 | t = SvGROW(PL_formtarget, len + linemax + 1); | |
578 | /* XXX from now onwards, SvCUR(PL_formtarget) is invalid */ | |
a0d0e21e | 579 | t += len; |
3808a683 | 580 | f = SvPV_const(formsv, len); |
a0d0e21e LW |
581 | |
582 | for (;;) { | |
583 | DEBUG_f( { | |
bfed75c6 | 584 | const char *name = "???"; |
a0d0e21e LW |
585 | arg = -1; |
586 | switch (*fpc) { | |
587 | case FF_LITERAL: arg = fpc[1]; name = "LITERAL"; break; | |
588 | case FF_BLANK: arg = fpc[1]; name = "BLANK"; break; | |
589 | case FF_SKIP: arg = fpc[1]; name = "SKIP"; break; | |
590 | case FF_FETCH: arg = fpc[1]; name = "FETCH"; break; | |
591 | case FF_DECIMAL: arg = fpc[1]; name = "DECIMAL"; break; | |
592 | ||
593 | case FF_CHECKNL: name = "CHECKNL"; break; | |
594 | case FF_CHECKCHOP: name = "CHECKCHOP"; break; | |
595 | case FF_SPACE: name = "SPACE"; break; | |
596 | case FF_HALFSPACE: name = "HALFSPACE"; break; | |
597 | case FF_ITEM: name = "ITEM"; break; | |
598 | case FF_CHOP: name = "CHOP"; break; | |
599 | case FF_LINEGLOB: name = "LINEGLOB"; break; | |
600 | case FF_NEWLINE: name = "NEWLINE"; break; | |
601 | case FF_MORE: name = "MORE"; break; | |
602 | case FF_LINEMARK: name = "LINEMARK"; break; | |
603 | case FF_END: name = "END"; break; | |
bfed75c6 | 604 | case FF_0DECIMAL: name = "0DECIMAL"; break; |
a1b95068 | 605 | case FF_LINESNGL: name = "LINESNGL"; break; |
a0d0e21e LW |
606 | } |
607 | if (arg >= 0) | |
bf49b057 | 608 | PerlIO_printf(Perl_debug_log, "%-16s%ld\n", name, (long) arg); |
a0d0e21e | 609 | else |
bf49b057 | 610 | PerlIO_printf(Perl_debug_log, "%-16s\n", name); |
5f80b19c | 611 | } ); |
a0d0e21e LW |
612 | switch (*fpc++) { |
613 | case FF_LINEMARK: | |
f5ada144 | 614 | linemark = t - SvPVX(PL_formtarget); |
a0d0e21e LW |
615 | lines++; |
616 | gotsome = FALSE; | |
617 | break; | |
618 | ||
619 | case FF_LITERAL: | |
ea60cfe8 DM |
620 | to_copy = *fpc++; |
621 | source = (U8 *)f; | |
622 | f += to_copy; | |
623 | trans = '~'; | |
75645721 | 624 | item_is_utf8 = targ_is_utf8 ? !!DO_UTF8(formsv) : !!SvUTF8(formsv); |
ea60cfe8 | 625 | goto append; |
a0d0e21e LW |
626 | |
627 | case FF_SKIP: | |
628 | f += *fpc++; | |
629 | break; | |
630 | ||
631 | case FF_FETCH: | |
632 | arg = *fpc++; | |
633 | f += arg; | |
634 | fieldsize = arg; | |
635 | ||
636 | if (MARK < SP) | |
637 | sv = *++MARK; | |
638 | else { | |
3280af22 | 639 | sv = &PL_sv_no; |
a2a5de95 | 640 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), "Not enough format arguments"); |
a0d0e21e | 641 | } |
125b9982 NT |
642 | if (SvTAINTED(sv)) |
643 | SvTAINTED_on(PL_formtarget); | |
a0d0e21e LW |
644 | break; |
645 | ||
646 | case FF_CHECKNL: | |
5a34cab7 NC |
647 | { |
648 | const char *send; | |
649 | const char *s = item = SvPV_const(sv, len); | |
650 | itemsize = len; | |
651 | if (DO_UTF8(sv)) { | |
652 | itemsize = sv_len_utf8(sv); | |
653 | if (itemsize != (I32)len) { | |
654 | I32 itembytes; | |
655 | if (itemsize > fieldsize) { | |
656 | itemsize = fieldsize; | |
657 | itembytes = itemsize; | |
658 | sv_pos_u2b(sv, &itembytes, 0); | |
659 | } | |
660 | else | |
661 | itembytes = len; | |
662 | send = chophere = s + itembytes; | |
663 | while (s < send) { | |
664 | if (*s & ~31) | |
665 | gotsome = TRUE; | |
666 | else if (*s == '\n') | |
667 | break; | |
668 | s++; | |
669 | } | |
670 | item_is_utf8 = TRUE; | |
671 | itemsize = s - item; | |
672 | sv_pos_b2u(sv, &itemsize); | |
673 | break; | |
a0ed51b3 | 674 | } |
a0ed51b3 | 675 | } |
5a34cab7 NC |
676 | item_is_utf8 = FALSE; |
677 | if (itemsize > fieldsize) | |
678 | itemsize = fieldsize; | |
679 | send = chophere = s + itemsize; | |
680 | while (s < send) { | |
681 | if (*s & ~31) | |
682 | gotsome = TRUE; | |
683 | else if (*s == '\n') | |
684 | break; | |
685 | s++; | |
686 | } | |
687 | itemsize = s - item; | |
688 | break; | |
a0ed51b3 | 689 | } |
a0d0e21e LW |
690 | |
691 | case FF_CHECKCHOP: | |
5a34cab7 NC |
692 | { |
693 | const char *s = item = SvPV_const(sv, len); | |
694 | itemsize = len; | |
695 | if (DO_UTF8(sv)) { | |
696 | itemsize = sv_len_utf8(sv); | |
697 | if (itemsize != (I32)len) { | |
698 | I32 itembytes; | |
699 | if (itemsize <= fieldsize) { | |
700 | const char *send = chophere = s + itemsize; | |
701 | while (s < send) { | |
702 | if (*s == '\r') { | |
703 | itemsize = s - item; | |
a0ed51b3 | 704 | chophere = s; |
a0ed51b3 | 705 | break; |
5a34cab7 NC |
706 | } |
707 | if (*s++ & ~31) | |
a0ed51b3 | 708 | gotsome = TRUE; |
a0ed51b3 | 709 | } |
a0ed51b3 | 710 | } |
5a34cab7 NC |
711 | else { |
712 | const char *send; | |
713 | itemsize = fieldsize; | |
714 | itembytes = itemsize; | |
715 | sv_pos_u2b(sv, &itembytes, 0); | |
716 | send = chophere = s + itembytes; | |
717 | while (s < send || (s == send && isSPACE(*s))) { | |
718 | if (isSPACE(*s)) { | |
719 | if (chopspace) | |
720 | chophere = s; | |
721 | if (*s == '\r') | |
722 | break; | |
723 | } | |
724 | else { | |
725 | if (*s & ~31) | |
726 | gotsome = TRUE; | |
727 | if (strchr(PL_chopset, *s)) | |
728 | chophere = s + 1; | |
729 | } | |
730 | s++; | |
731 | } | |
732 | itemsize = chophere - item; | |
733 | sv_pos_b2u(sv, &itemsize); | |
734 | } | |
735 | item_is_utf8 = TRUE; | |
a0d0e21e LW |
736 | break; |
737 | } | |
a0d0e21e | 738 | } |
5a34cab7 NC |
739 | item_is_utf8 = FALSE; |
740 | if (itemsize <= fieldsize) { | |
741 | const char *const send = chophere = s + itemsize; | |
742 | while (s < send) { | |
743 | if (*s == '\r') { | |
744 | itemsize = s - item; | |
a0d0e21e | 745 | chophere = s; |
a0d0e21e | 746 | break; |
5a34cab7 NC |
747 | } |
748 | if (*s++ & ~31) | |
a0d0e21e | 749 | gotsome = TRUE; |
a0d0e21e | 750 | } |
a0d0e21e | 751 | } |
5a34cab7 NC |
752 | else { |
753 | const char *send; | |
754 | itemsize = fieldsize; | |
755 | send = chophere = s + itemsize; | |
756 | while (s < send || (s == send && isSPACE(*s))) { | |
757 | if (isSPACE(*s)) { | |
758 | if (chopspace) | |
759 | chophere = s; | |
760 | if (*s == '\r') | |
761 | break; | |
762 | } | |
763 | else { | |
764 | if (*s & ~31) | |
765 | gotsome = TRUE; | |
766 | if (strchr(PL_chopset, *s)) | |
767 | chophere = s + 1; | |
768 | } | |
769 | s++; | |
770 | } | |
771 | itemsize = chophere - item; | |
772 | } | |
773 | break; | |
a0d0e21e | 774 | } |
a0d0e21e LW |
775 | |
776 | case FF_SPACE: | |
777 | arg = fieldsize - itemsize; | |
778 | if (arg) { | |
779 | fieldsize -= arg; | |
780 | while (arg-- > 0) | |
781 | *t++ = ' '; | |
782 | } | |
783 | break; | |
784 | ||
785 | case FF_HALFSPACE: | |
786 | arg = fieldsize - itemsize; | |
787 | if (arg) { | |
788 | arg /= 2; | |
789 | fieldsize -= arg; | |
790 | while (arg-- > 0) | |
791 | *t++ = ' '; | |
792 | } | |
793 | break; | |
794 | ||
795 | case FF_ITEM: | |
8aa7beb6 DM |
796 | to_copy = itemsize; |
797 | source = (U8 *)item; | |
798 | trans = 1; | |
799 | if (item_is_utf8) { | |
800 | /* convert to_copy from chars to bytes */ | |
801 | U8 *s = source; | |
802 | while (to_copy--) | |
803 | s += UTF8SKIP(s); | |
804 | to_copy = s - source; | |
a0d0e21e | 805 | } |
8aa7beb6 | 806 | goto append; |
a0d0e21e LW |
807 | |
808 | case FF_CHOP: | |
5a34cab7 NC |
809 | { |
810 | const char *s = chophere; | |
811 | if (chopspace) { | |
af68e756 | 812 | while (isSPACE(*s)) |
5a34cab7 NC |
813 | s++; |
814 | } | |
815 | sv_chop(sv,s); | |
816 | SvSETMAGIC(sv); | |
817 | break; | |
a0d0e21e | 818 | } |
a0d0e21e | 819 | |
a1b95068 WL |
820 | case FF_LINESNGL: |
821 | chopspace = 0; | |
a0d0e21e | 822 | case FF_LINEGLOB: |
5a34cab7 | 823 | { |
e32383e2 | 824 | const bool oneline = fpc[-1] == FF_LINESNGL; |
5a34cab7 | 825 | const char *s = item = SvPV_const(sv, len); |
7440a75b | 826 | const char *const send = s + len; |
7440a75b | 827 | |
f3f2f1a3 | 828 | item_is_utf8 = DO_UTF8(sv); |
a1137ee5 | 829 | if (!len) |
7440a75b | 830 | break; |
ea60cfe8 | 831 | trans = 0; |
0d21cefe | 832 | gotsome = TRUE; |
a1137ee5 | 833 | chophere = s + len; |
4ff700b9 DM |
834 | source = (U8 *) s; |
835 | to_copy = len; | |
0d21cefe DM |
836 | while (s < send) { |
837 | if (*s++ == '\n') { | |
838 | if (oneline) { | |
839 | to_copy = s - SvPVX_const(sv) - 1; | |
840 | chophere = s; | |
841 | break; | |
842 | } else { | |
843 | if (s == send) { | |
0d21cefe DM |
844 | to_copy--; |
845 | } else | |
846 | lines++; | |
1bd51a4c | 847 | } |
a0d0e21e | 848 | } |
0d21cefe | 849 | } |
a2c0032b DM |
850 | } |
851 | ||
ea60cfe8 DM |
852 | append: |
853 | /* append to_copy bytes from source to PL_formstring. | |
854 | * item_is_utf8 implies source is utf8. | |
855 | * if trans, translate certain characters during the copy */ | |
a2c0032b DM |
856 | { |
857 | U8 *tmp = NULL; | |
26e935cf | 858 | STRLEN grow = 0; |
0325ce87 DM |
859 | |
860 | SvCUR_set(PL_formtarget, | |
861 | t - SvPVX_const(PL_formtarget)); | |
862 | ||
0d21cefe DM |
863 | if (targ_is_utf8 && !item_is_utf8) { |
864 | source = tmp = bytes_to_utf8(source, &to_copy); | |
0d21cefe DM |
865 | } else { |
866 | if (item_is_utf8 && !targ_is_utf8) { | |
f5ada144 | 867 | U8 *s; |
0d21cefe | 868 | /* Upgrade targ to UTF8, and then we reduce it to |
0325ce87 DM |
869 | a problem we have a simple solution for. |
870 | Don't need get magic. */ | |
0d21cefe | 871 | sv_utf8_upgrade_nomg(PL_formtarget); |
0325ce87 | 872 | targ_is_utf8 = TRUE; |
f5ada144 DM |
873 | /* re-calculate linemark */ |
874 | s = (U8*)SvPVX(PL_formtarget); | |
26e935cf DM |
875 | /* the bytes we initially allocated to append the |
876 | * whole line may have been gobbled up during the | |
877 | * upgrade, so allocate a whole new line's worth | |
878 | * for safety */ | |
879 | grow = linemax; | |
f5ada144 DM |
880 | while (linemark--) |
881 | s += UTF8SKIP(s); | |
882 | linemark = s - (U8*)SvPVX(PL_formtarget); | |
e8e72d41 | 883 | } |
0d21cefe DM |
884 | /* Easy. They agree. */ |
885 | assert (item_is_utf8 == targ_is_utf8); | |
886 | } | |
26e935cf DM |
887 | if (!trans) |
888 | /* @* and ^* are the only things that can exceed | |
889 | * the linemax, so grow by the output size, plus | |
890 | * a whole new form's worth in case of any further | |
891 | * output */ | |
892 | grow = linemax + to_copy; | |
893 | if (grow) | |
894 | SvGROW(PL_formtarget, SvCUR(PL_formtarget) + grow + 1); | |
0d21cefe DM |
895 | t = SvPVX(PL_formtarget) + SvCUR(PL_formtarget); |
896 | ||
897 | Copy(source, t, to_copy, char); | |
ea60cfe8 | 898 | if (trans) { |
8aa7beb6 DM |
899 | /* blank out ~ or control chars, depending on trans. |
900 | * works on bytes not chars, so relies on not | |
901 | * matching utf8 continuation bytes */ | |
ea60cfe8 DM |
902 | U8 *s = (U8*)t; |
903 | U8 *send = s + to_copy; | |
904 | while (s < send) { | |
8aa7beb6 DM |
905 | const int ch = *s; |
906 | if (trans == '~' ? (ch == '~') : | |
907 | #ifdef EBCDIC | |
908 | iscntrl(ch) | |
909 | #else | |
910 | (!(ch & ~31)) | |
911 | #endif | |
912 | ) | |
ea60cfe8 DM |
913 | *s = ' '; |
914 | s++; | |
915 | } | |
916 | } | |
917 | ||
0d21cefe DM |
918 | t += to_copy; |
919 | SvCUR_set(PL_formtarget, SvCUR(PL_formtarget) + to_copy); | |
a1137ee5 | 920 | if (tmp) |
0d21cefe | 921 | Safefree(tmp); |
5a34cab7 | 922 | break; |
a0d0e21e | 923 | } |
a0d0e21e | 924 | |
a1b95068 WL |
925 | case FF_0DECIMAL: |
926 | arg = *fpc++; | |
927 | #if defined(USE_LONG_DOUBLE) | |
10edeb5d | 928 | fmt = (const char *) |
a701009a | 929 | ((arg & FORM_NUM_POINT) ? |
10edeb5d | 930 | "%#0*.*" PERL_PRIfldbl : "%0*.*" PERL_PRIfldbl); |
a1b95068 | 931 | #else |
10edeb5d | 932 | fmt = (const char *) |
a701009a | 933 | ((arg & FORM_NUM_POINT) ? |
10edeb5d | 934 | "%#0*.*f" : "%0*.*f"); |
a1b95068 WL |
935 | #endif |
936 | goto ff_dec; | |
a0d0e21e | 937 | case FF_DECIMAL: |
a0d0e21e | 938 | arg = *fpc++; |
65202027 | 939 | #if defined(USE_LONG_DOUBLE) |
10edeb5d | 940 | fmt = (const char *) |
a701009a | 941 | ((arg & FORM_NUM_POINT) ? "%#*.*" PERL_PRIfldbl : "%*.*" PERL_PRIfldbl); |
65202027 | 942 | #else |
10edeb5d | 943 | fmt = (const char *) |
a701009a | 944 | ((arg & FORM_NUM_POINT) ? "%#*.*f" : "%*.*f"); |
65202027 | 945 | #endif |
a1b95068 | 946 | ff_dec: |
784707d5 JP |
947 | /* If the field is marked with ^ and the value is undefined, |
948 | blank it out. */ | |
a701009a | 949 | if ((arg & FORM_NUM_BLANK) && !SvOK(sv)) { |
784707d5 JP |
950 | arg = fieldsize; |
951 | while (arg--) | |
952 | *t++ = ' '; | |
953 | break; | |
954 | } | |
955 | gotsome = TRUE; | |
956 | value = SvNV(sv); | |
a1b95068 | 957 | /* overflow evidence */ |
bfed75c6 | 958 | if (num_overflow(value, fieldsize, arg)) { |
a1b95068 WL |
959 | arg = fieldsize; |
960 | while (arg--) | |
961 | *t++ = '#'; | |
962 | break; | |
963 | } | |
784707d5 JP |
964 | /* Formats aren't yet marked for locales, so assume "yes". */ |
965 | { | |
966 | STORE_NUMERIC_STANDARD_SET_LOCAL(); | |
a701009a DM |
967 | arg &= ~(FORM_NUM_POINT|FORM_NUM_BLANK); |
968 | my_snprintf(t, SvLEN(PL_formtarget) - (t - SvPVX(PL_formtarget)), fmt, (int) fieldsize, (int) arg, value); | |
784707d5 JP |
969 | RESTORE_NUMERIC_STANDARD(); |
970 | } | |
971 | t += fieldsize; | |
972 | break; | |
a1b95068 | 973 | |
a0d0e21e LW |
974 | case FF_NEWLINE: |
975 | f++; | |
f5ada144 | 976 | while (t-- > (SvPVX(PL_formtarget) + linemark) && *t == ' ') ; |
a0d0e21e LW |
977 | t++; |
978 | *t++ = '\n'; | |
979 | break; | |
980 | ||
981 | case FF_BLANK: | |
982 | arg = *fpc++; | |
983 | if (gotsome) { | |
984 | if (arg) { /* repeat until fields exhausted? */ | |
11f9eeaf DM |
985 | fpc--; |
986 | goto end; | |
a0d0e21e LW |
987 | } |
988 | } | |
989 | else { | |
f5ada144 | 990 | t = SvPVX(PL_formtarget) + linemark; |
a0d0e21e LW |
991 | lines--; |
992 | } | |
993 | break; | |
994 | ||
995 | case FF_MORE: | |
5a34cab7 NC |
996 | { |
997 | const char *s = chophere; | |
998 | const char *send = item + len; | |
999 | if (chopspace) { | |
af68e756 | 1000 | while (isSPACE(*s) && (s < send)) |
5a34cab7 | 1001 | s++; |
a0d0e21e | 1002 | } |
5a34cab7 NC |
1003 | if (s < send) { |
1004 | char *s1; | |
1005 | arg = fieldsize - itemsize; | |
1006 | if (arg) { | |
1007 | fieldsize -= arg; | |
1008 | while (arg-- > 0) | |
1009 | *t++ = ' '; | |
1010 | } | |
1011 | s1 = t - 3; | |
1012 | if (strnEQ(s1," ",3)) { | |
1013 | while (s1 > SvPVX_const(PL_formtarget) && isSPACE(s1[-1])) | |
1014 | s1--; | |
1015 | } | |
1016 | *s1++ = '.'; | |
1017 | *s1++ = '.'; | |
1018 | *s1++ = '.'; | |
a0d0e21e | 1019 | } |
5a34cab7 | 1020 | break; |
a0d0e21e | 1021 | } |
a0d0e21e | 1022 | case FF_END: |
11f9eeaf | 1023 | end: |
bf2bec63 | 1024 | assert(t < SvPVX_const(PL_formtarget) + SvLEN(PL_formtarget)); |
a0d0e21e | 1025 | *t = '\0'; |
b15aece3 | 1026 | SvCUR_set(PL_formtarget, t - SvPVX_const(PL_formtarget)); |
1bd51a4c IH |
1027 | if (targ_is_utf8) |
1028 | SvUTF8_on(PL_formtarget); | |
3280af22 | 1029 | FmLINES(PL_formtarget) += lines; |
a0d0e21e | 1030 | SP = ORIGMARK; |
11f9eeaf DM |
1031 | if (fpc[-1] == FF_BLANK) |
1032 | RETURNOP(cLISTOP->op_first); | |
1033 | else | |
1034 | RETPUSHYES; | |
a0d0e21e LW |
1035 | } |
1036 | } | |
1037 | } | |
1038 | ||
1039 | PP(pp_grepstart) | |
1040 | { | |
27da23d5 | 1041 | dVAR; dSP; |
a0d0e21e LW |
1042 | SV *src; |
1043 | ||
3280af22 | 1044 | if (PL_stack_base + *PL_markstack_ptr == SP) { |
a0d0e21e | 1045 | (void)POPMARK; |
54310121 | 1046 | if (GIMME_V == G_SCALAR) |
6e449a3a | 1047 | mXPUSHi(0); |
533c011a | 1048 | RETURNOP(PL_op->op_next->op_next); |
a0d0e21e | 1049 | } |
3280af22 | 1050 | PL_stack_sp = PL_stack_base + *PL_markstack_ptr + 1; |
897d3989 NC |
1051 | Perl_pp_pushmark(aTHX); /* push dst */ |
1052 | Perl_pp_pushmark(aTHX); /* push src */ | |
d343c3ef | 1053 | ENTER_with_name("grep"); /* enter outer scope */ |
a0d0e21e LW |
1054 | |
1055 | SAVETMPS; | |
59f00321 RGS |
1056 | if (PL_op->op_private & OPpGREP_LEX) |
1057 | SAVESPTR(PAD_SVl(PL_op->op_targ)); | |
1058 | else | |
1059 | SAVE_DEFSV; | |
d343c3ef | 1060 | ENTER_with_name("grep_item"); /* enter inner scope */ |
7766f137 | 1061 | SAVEVPTR(PL_curpm); |
a0d0e21e | 1062 | |
3280af22 | 1063 | src = PL_stack_base[*PL_markstack_ptr]; |
a0d0e21e | 1064 | SvTEMP_off(src); |
59f00321 RGS |
1065 | if (PL_op->op_private & OPpGREP_LEX) |
1066 | PAD_SVl(PL_op->op_targ) = src; | |
1067 | else | |
414bf5ae | 1068 | DEFSV_set(src); |
a0d0e21e LW |
1069 | |
1070 | PUTBACK; | |
533c011a | 1071 | if (PL_op->op_type == OP_MAPSTART) |
897d3989 | 1072 | Perl_pp_pushmark(aTHX); /* push top */ |
533c011a | 1073 | return ((LOGOP*)PL_op->op_next)->op_other; |
a0d0e21e LW |
1074 | } |
1075 | ||
a0d0e21e LW |
1076 | PP(pp_mapwhile) |
1077 | { | |
27da23d5 | 1078 | dVAR; dSP; |
f54cb97a | 1079 | const I32 gimme = GIMME_V; |
544f3153 | 1080 | I32 items = (SP - PL_stack_base) - *PL_markstack_ptr; /* how many new items */ |
a0d0e21e LW |
1081 | I32 count; |
1082 | I32 shift; | |
1083 | SV** src; | |
ac27b0f5 | 1084 | SV** dst; |
a0d0e21e | 1085 | |
544f3153 | 1086 | /* first, move source pointer to the next item in the source list */ |
3280af22 | 1087 | ++PL_markstack_ptr[-1]; |
544f3153 GS |
1088 | |
1089 | /* if there are new items, push them into the destination list */ | |
4c90a460 | 1090 | if (items && gimme != G_VOID) { |
544f3153 GS |
1091 | /* might need to make room back there first */ |
1092 | if (items > PL_markstack_ptr[-1] - PL_markstack_ptr[-2]) { | |
1093 | /* XXX this implementation is very pessimal because the stack | |
1094 | * is repeatedly extended for every set of items. Is possible | |
1095 | * to do this without any stack extension or copying at all | |
1096 | * by maintaining a separate list over which the map iterates | |
18ef8bea | 1097 | * (like foreach does). --gsar */ |
544f3153 GS |
1098 | |
1099 | /* everything in the stack after the destination list moves | |
1100 | * towards the end the stack by the amount of room needed */ | |
1101 | shift = items - (PL_markstack_ptr[-1] - PL_markstack_ptr[-2]); | |
1102 | ||
1103 | /* items to shift up (accounting for the moved source pointer) */ | |
1104 | count = (SP - PL_stack_base) - (PL_markstack_ptr[-1] - 1); | |
18ef8bea BT |
1105 | |
1106 | /* This optimization is by Ben Tilly and it does | |
1107 | * things differently from what Sarathy (gsar) | |
1108 | * is describing. The downside of this optimization is | |
1109 | * that leaves "holes" (uninitialized and hopefully unused areas) | |
1110 | * to the Perl stack, but on the other hand this | |
1111 | * shouldn't be a problem. If Sarathy's idea gets | |
1112 | * implemented, this optimization should become | |
1113 | * irrelevant. --jhi */ | |
1114 | if (shift < count) | |
1115 | shift = count; /* Avoid shifting too often --Ben Tilly */ | |
bfed75c6 | 1116 | |
924508f0 GS |
1117 | EXTEND(SP,shift); |
1118 | src = SP; | |
1119 | dst = (SP += shift); | |
3280af22 NIS |
1120 | PL_markstack_ptr[-1] += shift; |
1121 | *PL_markstack_ptr += shift; | |
544f3153 | 1122 | while (count--) |
a0d0e21e LW |
1123 | *dst-- = *src--; |
1124 | } | |
544f3153 | 1125 | /* copy the new items down to the destination list */ |
ac27b0f5 | 1126 | dst = PL_stack_base + (PL_markstack_ptr[-2] += items) - 1; |
22023b26 | 1127 | if (gimme == G_ARRAY) { |
b2a2a901 DM |
1128 | /* add returned items to the collection (making mortal copies |
1129 | * if necessary), then clear the current temps stack frame | |
1130 | * *except* for those items. We do this splicing the items | |
1131 | * into the start of the tmps frame (so some items may be on | |
59d53fd6 | 1132 | * the tmps stack twice), then moving PL_tmps_floor above |
b2a2a901 DM |
1133 | * them, then freeing the frame. That way, the only tmps that |
1134 | * accumulate over iterations are the return values for map. | |
1135 | * We have to do to this way so that everything gets correctly | |
1136 | * freed if we die during the map. | |
1137 | */ | |
1138 | I32 tmpsbase; | |
1139 | I32 i = items; | |
1140 | /* make space for the slice */ | |
1141 | EXTEND_MORTAL(items); | |
1142 | tmpsbase = PL_tmps_floor + 1; | |
1143 | Move(PL_tmps_stack + tmpsbase, | |
1144 | PL_tmps_stack + tmpsbase + items, | |
1145 | PL_tmps_ix - PL_tmps_floor, | |
1146 | SV*); | |
1147 | PL_tmps_ix += items; | |
1148 | ||
1149 | while (i-- > 0) { | |
1150 | SV *sv = POPs; | |
1151 | if (!SvTEMP(sv)) | |
1152 | sv = sv_mortalcopy(sv); | |
1153 | *dst-- = sv; | |
1154 | PL_tmps_stack[tmpsbase++] = SvREFCNT_inc_simple(sv); | |
1155 | } | |
1156 | /* clear the stack frame except for the items */ | |
1157 | PL_tmps_floor += items; | |
1158 | FREETMPS; | |
1159 | /* FREETMPS may have cleared the TEMP flag on some of the items */ | |
1160 | i = items; | |
1161 | while (i-- > 0) | |
1162 | SvTEMP_on(PL_tmps_stack[--tmpsbase]); | |
22023b26 | 1163 | } |
bfed75c6 | 1164 | else { |
22023b26 TP |
1165 | /* scalar context: we don't care about which values map returns |
1166 | * (we use undef here). And so we certainly don't want to do mortal | |
1167 | * copies of meaningless values. */ | |
1168 | while (items-- > 0) { | |
b988aa42 | 1169 | (void)POPs; |
22023b26 TP |
1170 | *dst-- = &PL_sv_undef; |
1171 | } | |
b2a2a901 | 1172 | FREETMPS; |
22023b26 | 1173 | } |
a0d0e21e | 1174 | } |
b2a2a901 DM |
1175 | else { |
1176 | FREETMPS; | |
1177 | } | |
d343c3ef | 1178 | LEAVE_with_name("grep_item"); /* exit inner scope */ |
a0d0e21e LW |
1179 | |
1180 | /* All done yet? */ | |
3280af22 | 1181 | if (PL_markstack_ptr[-1] > *PL_markstack_ptr) { |
a0d0e21e LW |
1182 | |
1183 | (void)POPMARK; /* pop top */ | |
d343c3ef | 1184 | LEAVE_with_name("grep"); /* exit outer scope */ |
a0d0e21e | 1185 | (void)POPMARK; /* pop src */ |
3280af22 | 1186 | items = --*PL_markstack_ptr - PL_markstack_ptr[-1]; |
a0d0e21e | 1187 | (void)POPMARK; /* pop dst */ |
3280af22 | 1188 | SP = PL_stack_base + POPMARK; /* pop original mark */ |
54310121 | 1189 | if (gimme == G_SCALAR) { |
7cc47870 RGS |
1190 | if (PL_op->op_private & OPpGREP_LEX) { |
1191 | SV* sv = sv_newmortal(); | |
1192 | sv_setiv(sv, items); | |
1193 | PUSHs(sv); | |
1194 | } | |
1195 | else { | |
1196 | dTARGET; | |
1197 | XPUSHi(items); | |
1198 | } | |
a0d0e21e | 1199 | } |
54310121 | 1200 | else if (gimme == G_ARRAY) |
1201 | SP += items; | |
a0d0e21e LW |
1202 | RETURN; |
1203 | } | |
1204 | else { | |
1205 | SV *src; | |
1206 | ||
d343c3ef | 1207 | ENTER_with_name("grep_item"); /* enter inner scope */ |
7766f137 | 1208 | SAVEVPTR(PL_curpm); |
a0d0e21e | 1209 | |
544f3153 | 1210 | /* set $_ to the new source item */ |
3280af22 | 1211 | src = PL_stack_base[PL_markstack_ptr[-1]]; |
a0d0e21e | 1212 | SvTEMP_off(src); |
59f00321 RGS |
1213 | if (PL_op->op_private & OPpGREP_LEX) |
1214 | PAD_SVl(PL_op->op_targ) = src; | |
1215 | else | |
414bf5ae | 1216 | DEFSV_set(src); |
a0d0e21e LW |
1217 | |
1218 | RETURNOP(cLOGOP->op_other); | |
1219 | } | |
1220 | } | |
1221 | ||
a0d0e21e LW |
1222 | /* Range stuff. */ |
1223 | ||
1224 | PP(pp_range) | |
1225 | { | |
97aff369 | 1226 | dVAR; |
a0d0e21e | 1227 | if (GIMME == G_ARRAY) |
1a67a97c | 1228 | return NORMAL; |
538573f7 | 1229 | if (SvTRUEx(PAD_SV(PL_op->op_targ))) |
1a67a97c | 1230 | return cLOGOP->op_other; |
538573f7 | 1231 | else |
1a67a97c | 1232 | return NORMAL; |
a0d0e21e LW |
1233 | } |
1234 | ||
1235 | PP(pp_flip) | |
1236 | { | |
97aff369 | 1237 | dVAR; |
39644a26 | 1238 | dSP; |
a0d0e21e LW |
1239 | |
1240 | if (GIMME == G_ARRAY) { | |
1a67a97c | 1241 | RETURNOP(((LOGOP*)cUNOP->op_first)->op_other); |
a0d0e21e LW |
1242 | } |
1243 | else { | |
1244 | dTOPss; | |
44f8325f | 1245 | SV * const targ = PAD_SV(PL_op->op_targ); |
bfed75c6 | 1246 | int flip = 0; |
790090df | 1247 | |
bfed75c6 | 1248 | if (PL_op->op_private & OPpFLIP_LINENUM) { |
4e3399f9 YST |
1249 | if (GvIO(PL_last_in_gv)) { |
1250 | flip = SvIV(sv) == (IV)IoLINES(GvIOp(PL_last_in_gv)); | |
1251 | } | |
1252 | else { | |
fafc274c | 1253 | GV * const gv = gv_fetchpvs(".", GV_ADD|GV_NOTQUAL, SVt_PV); |
44f8325f AL |
1254 | if (gv && GvSV(gv)) |
1255 | flip = SvIV(sv) == SvIV(GvSV(gv)); | |
4e3399f9 | 1256 | } |
bfed75c6 AL |
1257 | } else { |
1258 | flip = SvTRUE(sv); | |
1259 | } | |
1260 | if (flip) { | |
a0d0e21e | 1261 | sv_setiv(PAD_SV(cUNOP->op_first->op_targ), 1); |
533c011a | 1262 | if (PL_op->op_flags & OPf_SPECIAL) { |
a0d0e21e | 1263 | sv_setiv(targ, 1); |
3e3baf6d | 1264 | SETs(targ); |
a0d0e21e LW |
1265 | RETURN; |
1266 | } | |
1267 | else { | |
1268 | sv_setiv(targ, 0); | |
924508f0 | 1269 | SP--; |
1a67a97c | 1270 | RETURNOP(((LOGOP*)cUNOP->op_first)->op_other); |
a0d0e21e LW |
1271 | } |
1272 | } | |
76f68e9b | 1273 | sv_setpvs(TARG, ""); |
a0d0e21e LW |
1274 | SETs(targ); |
1275 | RETURN; | |
1276 | } | |
1277 | } | |
1278 | ||
8e9bbdb9 RGS |
1279 | /* This code tries to decide if "$left .. $right" should use the |
1280 | magical string increment, or if the range is numeric (we make | |
1281 | an exception for .."0" [#18165]). AMS 20021031. */ | |
1282 | ||
1283 | #define RANGE_IS_NUMERIC(left,right) ( \ | |
b0e74086 RGS |
1284 | SvNIOKp(left) || (SvOK(left) && !SvPOKp(left)) || \ |
1285 | SvNIOKp(right) || (SvOK(right) && !SvPOKp(right)) || \ | |
e0ab1c0e | 1286 | (((!SvOK(left) && SvOK(right)) || ((!SvOK(left) || \ |
b15aece3 | 1287 | looks_like_number(left)) && SvPOKp(left) && *SvPVX_const(left) != '0')) \ |
e0ab1c0e | 1288 | && (!SvOK(right) || looks_like_number(right)))) |
8e9bbdb9 | 1289 | |
a0d0e21e LW |
1290 | PP(pp_flop) |
1291 | { | |
97aff369 | 1292 | dVAR; dSP; |
a0d0e21e LW |
1293 | |
1294 | if (GIMME == G_ARRAY) { | |
1295 | dPOPPOPssrl; | |
86cb7173 | 1296 | |
5b295bef RD |
1297 | SvGETMAGIC(left); |
1298 | SvGETMAGIC(right); | |
a0d0e21e | 1299 | |
8e9bbdb9 | 1300 | if (RANGE_IS_NUMERIC(left,right)) { |
901017d6 AL |
1301 | register IV i, j; |
1302 | IV max; | |
f52e41ad FC |
1303 | if ((SvOK(left) && SvNV_nomg(left) < IV_MIN) || |
1304 | (SvOK(right) && SvNV_nomg(right) > IV_MAX)) | |
d470f89e | 1305 | DIE(aTHX_ "Range iterator outside integer range"); |
f52e41ad FC |
1306 | i = SvIV_nomg(left); |
1307 | max = SvIV_nomg(right); | |
bbce6d69 | 1308 | if (max >= i) { |
c1ab3db2 AK |
1309 | j = max - i + 1; |
1310 | EXTEND_MORTAL(j); | |
1311 | EXTEND(SP, j); | |
bbce6d69 | 1312 | } |
c1ab3db2 AK |
1313 | else |
1314 | j = 0; | |
1315 | while (j--) { | |
901017d6 | 1316 | SV * const sv = sv_2mortal(newSViv(i++)); |
a0d0e21e LW |
1317 | PUSHs(sv); |
1318 | } | |
1319 | } | |
1320 | else { | |
3c323193 FC |
1321 | STRLEN len, llen; |
1322 | const char * const lpv = SvPV_nomg_const(left, llen); | |
f52e41ad | 1323 | const char * const tmps = SvPV_nomg_const(right, len); |
a0d0e21e | 1324 | |
3c323193 | 1325 | SV *sv = newSVpvn_flags(lpv, llen, SvUTF8(left)|SVs_TEMP); |
89ea2908 | 1326 | while (!SvNIOKp(sv) && SvCUR(sv) <= len) { |
a0d0e21e | 1327 | XPUSHs(sv); |
b15aece3 | 1328 | if (strEQ(SvPVX_const(sv),tmps)) |
89ea2908 | 1329 | break; |
a0d0e21e LW |
1330 | sv = sv_2mortal(newSVsv(sv)); |
1331 | sv_inc(sv); | |
1332 | } | |
a0d0e21e LW |
1333 | } |
1334 | } | |
1335 | else { | |
1336 | dTOPss; | |
901017d6 | 1337 | SV * const targ = PAD_SV(cUNOP->op_first->op_targ); |
4e3399f9 | 1338 | int flop = 0; |
a0d0e21e | 1339 | sv_inc(targ); |
4e3399f9 YST |
1340 | |
1341 | if (PL_op->op_private & OPpFLIP_LINENUM) { | |
1342 | if (GvIO(PL_last_in_gv)) { | |
1343 | flop = SvIV(sv) == (IV)IoLINES(GvIOp(PL_last_in_gv)); | |
1344 | } | |
1345 | else { | |
fafc274c | 1346 | GV * const gv = gv_fetchpvs(".", GV_ADD|GV_NOTQUAL, SVt_PV); |
4e3399f9 YST |
1347 | if (gv && GvSV(gv)) flop = SvIV(sv) == SvIV(GvSV(gv)); |
1348 | } | |
1349 | } | |
1350 | else { | |
1351 | flop = SvTRUE(sv); | |
1352 | } | |
1353 | ||
1354 | if (flop) { | |
a0d0e21e | 1355 | sv_setiv(PAD_SV(((UNOP*)cUNOP->op_first)->op_first->op_targ), 0); |
396482e1 | 1356 | sv_catpvs(targ, "E0"); |
a0d0e21e LW |
1357 | } |
1358 | SETs(targ); | |
1359 | } | |
1360 | ||
1361 | RETURN; | |
1362 | } | |
1363 | ||
1364 | /* Control. */ | |
1365 | ||
27da23d5 | 1366 | static const char * const context_name[] = { |
515afda2 | 1367 | "pseudo-block", |
f31522f3 | 1368 | NULL, /* CXt_WHEN never actually needs "block" */ |
76753e7f | 1369 | NULL, /* CXt_BLOCK never actually needs "block" */ |
f31522f3 | 1370 | NULL, /* CXt_GIVEN never actually needs "block" */ |
76753e7f NC |
1371 | NULL, /* CXt_LOOP_FOR never actually needs "loop" */ |
1372 | NULL, /* CXt_LOOP_PLAIN never actually needs "loop" */ | |
1373 | NULL, /* CXt_LOOP_LAZYSV never actually needs "loop" */ | |
1374 | NULL, /* CXt_LOOP_LAZYIV never actually needs "loop" */ | |
515afda2 | 1375 | "subroutine", |
76753e7f | 1376 | "format", |
515afda2 | 1377 | "eval", |
515afda2 | 1378 | "substitution", |
515afda2 NC |
1379 | }; |
1380 | ||
76e3520e | 1381 | STATIC I32 |
06b5626a | 1382 | S_dopoptolabel(pTHX_ const char *label) |
a0d0e21e | 1383 | { |
97aff369 | 1384 | dVAR; |
a0d0e21e | 1385 | register I32 i; |
a0d0e21e | 1386 | |
7918f24d NC |
1387 | PERL_ARGS_ASSERT_DOPOPTOLABEL; |
1388 | ||
a0d0e21e | 1389 | for (i = cxstack_ix; i >= 0; i--) { |
901017d6 | 1390 | register const PERL_CONTEXT * const cx = &cxstack[i]; |
6b35e009 | 1391 | switch (CxTYPE(cx)) { |
a0d0e21e | 1392 | case CXt_SUBST: |
a0d0e21e | 1393 | case CXt_SUB: |
7766f137 | 1394 | case CXt_FORMAT: |
a0d0e21e | 1395 | case CXt_EVAL: |
0a753a76 | 1396 | case CXt_NULL: |
dcbac5bb | 1397 | /* diag_listed_as: Exiting subroutine via %s */ |
a2a5de95 NC |
1398 | Perl_ck_warner(aTHX_ packWARN(WARN_EXITING), "Exiting %s via %s", |
1399 | context_name[CxTYPE(cx)], OP_NAME(PL_op)); | |
515afda2 NC |
1400 | if (CxTYPE(cx) == CXt_NULL) |
1401 | return -1; | |
1402 | break; | |
c6fdafd0 | 1403 | case CXt_LOOP_LAZYIV: |
d01136d6 | 1404 | case CXt_LOOP_LAZYSV: |
3b719c58 NC |
1405 | case CXt_LOOP_FOR: |
1406 | case CXt_LOOP_PLAIN: | |
7e8f1eac AD |
1407 | { |
1408 | const char *cx_label = CxLABEL(cx); | |
1409 | if (!cx_label || strNE(label, cx_label) ) { | |
1c98cc53 | 1410 | DEBUG_l(Perl_deb(aTHX_ "(poptolabel(): skipping label at cx=%ld %s)\n", |
7e8f1eac | 1411 | (long)i, cx_label)); |
a0d0e21e LW |
1412 | continue; |
1413 | } | |
1c98cc53 | 1414 | DEBUG_l( Perl_deb(aTHX_ "(poptolabel(): found label at cx=%ld %s)\n", (long)i, label)); |
a0d0e21e | 1415 | return i; |
7e8f1eac | 1416 | } |
a0d0e21e LW |
1417 | } |
1418 | } | |
1419 | return i; | |
1420 | } | |
1421 | ||
0d863452 RH |
1422 | |
1423 | ||
e50aee73 | 1424 | I32 |
864dbfa3 | 1425 | Perl_dowantarray(pTHX) |
e50aee73 | 1426 | { |
97aff369 | 1427 | dVAR; |
f54cb97a | 1428 | const I32 gimme = block_gimme(); |
54310121 | 1429 | return (gimme == G_VOID) ? G_SCALAR : gimme; |
1430 | } | |
1431 | ||
1432 | I32 | |
864dbfa3 | 1433 | Perl_block_gimme(pTHX) |
54310121 | 1434 | { |
97aff369 | 1435 | dVAR; |
06b5626a | 1436 | const I32 cxix = dopoptosub(cxstack_ix); |
e50aee73 | 1437 | if (cxix < 0) |
46fc3d4c | 1438 | return G_VOID; |
e50aee73 | 1439 | |
54310121 | 1440 | switch (cxstack[cxix].blk_gimme) { |
d2719217 GS |
1441 | case G_VOID: |
1442 | return G_VOID; | |
54310121 | 1443 | case G_SCALAR: |
e50aee73 | 1444 | return G_SCALAR; |
54310121 | 1445 | case G_ARRAY: |
1446 | return G_ARRAY; | |
1447 | default: | |
cea2e8a9 | 1448 | Perl_croak(aTHX_ "panic: bad gimme: %d\n", cxstack[cxix].blk_gimme); |
d2719217 GS |
1449 | /* NOTREACHED */ |
1450 | return 0; | |
54310121 | 1451 | } |
e50aee73 AD |
1452 | } |
1453 | ||
78f9721b SM |
1454 | I32 |
1455 | Perl_is_lvalue_sub(pTHX) | |
1456 | { | |
97aff369 | 1457 | dVAR; |
06b5626a | 1458 | const I32 cxix = dopoptosub(cxstack_ix); |
78f9721b SM |
1459 | assert(cxix >= 0); /* We should only be called from inside subs */ |
1460 | ||
bafb2adc NC |
1461 | if (CxLVAL(cxstack + cxix) && CvLVALUE(cxstack[cxix].blk_sub.cv)) |
1462 | return CxLVAL(cxstack + cxix); | |
78f9721b SM |
1463 | else |
1464 | return 0; | |
1465 | } | |
1466 | ||
777d9014 FC |
1467 | /* only used by PUSHSUB */ |
1468 | I32 | |
1469 | Perl_was_lvalue_sub(pTHX) | |
1470 | { | |
1471 | dVAR; | |
1472 | const I32 cxix = dopoptosub(cxstack_ix-1); | |
1473 | assert(cxix >= 0); /* We should only be called from inside subs */ | |
1474 | ||
1475 | if (CxLVAL(cxstack + cxix) && CvLVALUE(cxstack[cxix].blk_sub.cv)) | |
1476 | return CxLVAL(cxstack + cxix); | |
1477 | else | |
1478 | return 0; | |
1479 | } | |
1480 | ||
76e3520e | 1481 | STATIC I32 |
901017d6 | 1482 | S_dopoptosub_at(pTHX_ const PERL_CONTEXT *cxstk, I32 startingblock) |
2c375eb9 | 1483 | { |
97aff369 | 1484 | dVAR; |
a0d0e21e | 1485 | I32 i; |
7918f24d NC |
1486 | |
1487 | PERL_ARGS_ASSERT_DOPOPTOSUB_AT; | |
1488 | ||
a0d0e21e | 1489 | for (i = startingblock; i >= 0; i--) { |
901017d6 | 1490 | register const PERL_CONTEXT * const cx = &cxstk[i]; |
6b35e009 | 1491 | switch (CxTYPE(cx)) { |
a0d0e21e LW |
1492 | default: |
1493 | continue; | |
1494 | case CXt_EVAL: | |
1495 | case CXt_SUB: | |
7766f137 | 1496 | case CXt_FORMAT: |
1c98cc53 | 1497 | DEBUG_l( Perl_deb(aTHX_ "(dopoptosub_at(): found sub at cx=%ld)\n", (long)i)); |
a0d0e21e LW |
1498 | return i; |
1499 | } | |
1500 | } | |
1501 | return i; | |
1502 | } | |
1503 | ||
76e3520e | 1504 | STATIC I32 |
cea2e8a9 | 1505 | S_dopoptoeval(pTHX_ I32 startingblock) |
a0d0e21e | 1506 | { |
97aff369 | 1507 | dVAR; |
a0d0e21e | 1508 | I32 i; |
a0d0e21e | 1509 | for (i = startingblock; i >= 0; i--) { |
06b5626a | 1510 | register const PERL_CONTEXT *cx = &cxstack[i]; |
6b35e009 | 1511 | switch (CxTYPE(cx)) { |
a0d0e21e LW |
1512 | default: |
1513 | continue; | |
1514 | case CXt_EVAL: | |
1c98cc53 | 1515 | DEBUG_l( Perl_deb(aTHX_ "(dopoptoeval(): found eval at cx=%ld)\n", (long)i)); |
a0d0e21e LW |
1516 | return i; |
1517 | } | |
1518 | } | |
1519 | return i; | |
1520 | } | |
1521 | ||
76e3520e | 1522 | STATIC I32 |
cea2e8a9 | 1523 | S_dopoptoloop(pTHX_ I32 startingblock) |
a0d0e21e | 1524 | { |
97aff369 | 1525 | dVAR; |
a0d0e21e | 1526 | I32 i; |
a0d0e21e | 1527 | for (i = startingblock; i >= 0; i--) { |
901017d6 | 1528 | register const PERL_CONTEXT * const cx = &cxstack[i]; |
6b35e009 | 1529 | switch (CxTYPE(cx)) { |
a0d0e21e | 1530 | case CXt_SUBST: |
a0d0e21e | 1531 | case CXt_SUB: |
7766f137 | 1532 | case CXt_FORMAT: |
a0d0e21e | 1533 | case CXt_EVAL: |
0a753a76 | 1534 | case CXt_NULL: |
dcbac5bb | 1535 | /* diag_listed_as: Exiting subroutine via %s */ |
a2a5de95 NC |
1536 | Perl_ck_warner(aTHX_ packWARN(WARN_EXITING), "Exiting %s via %s", |
1537 | context_name[CxTYPE(cx)], OP_NAME(PL_op)); | |
515afda2 NC |
1538 | if ((CxTYPE(cx)) == CXt_NULL) |
1539 | return -1; | |
1540 | break; | |
c6fdafd0 | 1541 | case CXt_LOOP_LAZYIV: |
d01136d6 | 1542 | case CXt_LOOP_LAZYSV: |
3b719c58 NC |
1543 | case CXt_LOOP_FOR: |
1544 | case CXt_LOOP_PLAIN: | |
1c98cc53 | 1545 | DEBUG_l( Perl_deb(aTHX_ "(dopoptoloop(): found loop at cx=%ld)\n", (long)i)); |
a0d0e21e LW |
1546 | return i; |
1547 | } | |
1548 | } | |
1549 | return i; | |
1550 | } | |
1551 | ||
0d863452 RH |
1552 | STATIC I32 |
1553 | S_dopoptogiven(pTHX_ I32 startingblock) | |
1554 | { | |
97aff369 | 1555 | dVAR; |
0d863452 RH |
1556 | I32 i; |
1557 | for (i = startingblock; i >= 0; i--) { | |
1558 | register const PERL_CONTEXT *cx = &cxstack[i]; | |
1559 | switch (CxTYPE(cx)) { | |
1560 | default: | |
1561 | continue; | |
1562 | case CXt_GIVEN: | |
1c98cc53 | 1563 | DEBUG_l( Perl_deb(aTHX_ "(dopoptogiven(): found given at cx=%ld)\n", (long)i)); |
0d863452 | 1564 | return i; |
3b719c58 NC |
1565 | case CXt_LOOP_PLAIN: |
1566 | assert(!CxFOREACHDEF(cx)); | |
1567 | break; | |
c6fdafd0 | 1568 | case CXt_LOOP_LAZYIV: |
d01136d6 | 1569 | case CXt_LOOP_LAZYSV: |
3b719c58 | 1570 | case CXt_LOOP_FOR: |
0d863452 | 1571 | if (CxFOREACHDEF(cx)) { |
1c98cc53 | 1572 | DEBUG_l( Perl_deb(aTHX_ "(dopoptogiven(): found foreach at cx=%ld)\n", (long)i)); |
0d863452 RH |
1573 | return i; |
1574 | } | |
1575 | } | |
1576 | } | |
1577 | return i; | |
1578 | } | |
1579 | ||
1580 | STATIC I32 | |
1581 | S_dopoptowhen(pTHX_ I32 startingblock) | |
1582 | { | |
97aff369 | 1583 | dVAR; |
0d863452 RH |
1584 | I32 i; |
1585 | for (i = startingblock; i >= 0; i--) { | |
1586 | register const PERL_CONTEXT *cx = &cxstack[i]; | |
1587 | switch (CxTYPE(cx)) { | |
1588 | default: | |
1589 | continue; | |
1590 | case CXt_WHEN: | |
1c98cc53 | 1591 | DEBUG_l( Perl_deb(aTHX_ "(dopoptowhen(): found when at cx=%ld)\n", (long)i)); |
0d863452 RH |
1592 | return i; |
1593 | } | |
1594 | } | |
1595 | return i; | |
1596 | } | |
1597 | ||
a0d0e21e | 1598 | void |
864dbfa3 | 1599 | Perl_dounwind(pTHX_ I32 cxix) |
a0d0e21e | 1600 | { |
97aff369 | 1601 | dVAR; |
a0d0e21e LW |
1602 | I32 optype; |
1603 | ||
f144f1e3 DM |
1604 | if (!PL_curstackinfo) /* can happen if die during thread cloning */ |
1605 | return; | |
1606 | ||
a0d0e21e | 1607 | while (cxstack_ix > cxix) { |
b0d9ce38 | 1608 | SV *sv; |
06b5626a | 1609 | register PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
1c98cc53 | 1610 | DEBUG_CX("UNWIND"); \ |
a0d0e21e | 1611 | /* Note: we don't need to restore the base context info till the end. */ |
6b35e009 | 1612 | switch (CxTYPE(cx)) { |
c90c0ff4 | 1613 | case CXt_SUBST: |
1614 | POPSUBST(cx); | |
1615 | continue; /* not break */ | |
a0d0e21e | 1616 | case CXt_SUB: |
b0d9ce38 GS |
1617 | POPSUB(cx,sv); |
1618 | LEAVESUB(sv); | |
a0d0e21e LW |
1619 | break; |
1620 | case CXt_EVAL: | |
1621 | POPEVAL(cx); | |
1622 | break; | |
c6fdafd0 | 1623 | case CXt_LOOP_LAZYIV: |
d01136d6 | 1624 | case CXt_LOOP_LAZYSV: |
3b719c58 NC |
1625 | case CXt_LOOP_FOR: |
1626 | case CXt_LOOP_PLAIN: | |
a0d0e21e LW |
1627 | POPLOOP(cx); |
1628 | break; | |
0a753a76 | 1629 | case CXt_NULL: |
a0d0e21e | 1630 | break; |
7766f137 GS |
1631 | case CXt_FORMAT: |
1632 | POPFORMAT(cx); | |
1633 | break; | |
a0d0e21e | 1634 | } |
c90c0ff4 | 1635 | cxstack_ix--; |
a0d0e21e | 1636 | } |
1b6737cc | 1637 | PERL_UNUSED_VAR(optype); |
a0d0e21e LW |
1638 | } |
1639 | ||
5a844595 GS |
1640 | void |
1641 | Perl_qerror(pTHX_ SV *err) | |
1642 | { | |
97aff369 | 1643 | dVAR; |
7918f24d NC |
1644 | |
1645 | PERL_ARGS_ASSERT_QERROR; | |
1646 | ||
6b2fb389 DM |
1647 | if (PL_in_eval) { |
1648 | if (PL_in_eval & EVAL_KEEPERR) { | |
ecad31f0 BF |
1649 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), "\t(in cleanup) %"SVf, |
1650 | SVfARG(err)); | |
6b2fb389 DM |
1651 | } |
1652 | else | |
1653 | sv_catsv(ERRSV, err); | |
1654 | } | |
5a844595 GS |
1655 | else if (PL_errors) |
1656 | sv_catsv(PL_errors, err); | |
1657 | else | |
be2597df | 1658 | Perl_warn(aTHX_ "%"SVf, SVfARG(err)); |
13765c85 DM |
1659 | if (PL_parser) |
1660 | ++PL_parser->error_count; | |
5a844595 GS |
1661 | } |
1662 | ||
bb4c52e0 | 1663 | void |
c5df3096 | 1664 | Perl_die_unwind(pTHX_ SV *msv) |
a0d0e21e | 1665 | { |
27da23d5 | 1666 | dVAR; |
c5df3096 | 1667 | SV *exceptsv = sv_mortalcopy(msv); |
96d9b9cd | 1668 | U8 in_eval = PL_in_eval; |
c5df3096 | 1669 | PERL_ARGS_ASSERT_DIE_UNWIND; |
87582a92 | 1670 | |
96d9b9cd | 1671 | if (in_eval) { |
a0d0e21e | 1672 | I32 cxix; |
a0d0e21e | 1673 | I32 gimme; |
a0d0e21e | 1674 | |
22a30693 Z |
1675 | /* |
1676 | * Historically, perl used to set ERRSV ($@) early in the die | |
1677 | * process and rely on it not getting clobbered during unwinding. | |
1678 | * That sucked, because it was liable to get clobbered, so the | |
1679 | * setting of ERRSV used to emit the exception from eval{} has | |
1680 | * been moved to much later, after unwinding (see just before | |
1681 | * JMPENV_JUMP below). However, some modules were relying on the | |
1682 | * early setting, by examining $@ during unwinding to use it as | |
1683 | * a flag indicating whether the current unwinding was caused by | |
1684 | * an exception. It was never a reliable flag for that purpose, | |
1685 | * being totally open to false positives even without actual | |
1686 | * clobberage, but was useful enough for production code to | |
1687 | * semantically rely on it. | |
1688 | * | |
1689 | * We'd like to have a proper introspective interface that | |
1690 | * explicitly describes the reason for whatever unwinding | |
1691 | * operations are currently in progress, so that those modules | |
1692 | * work reliably and $@ isn't further overloaded. But we don't | |
1693 | * have one yet. In its absence, as a stopgap measure, ERRSV is | |
1694 | * now *additionally* set here, before unwinding, to serve as the | |
1695 | * (unreliable) flag that it used to. | |
1696 | * | |
1697 | * This behaviour is temporary, and should be removed when a | |
1698 | * proper way to detect exceptional unwinding has been developed. | |
1699 | * As of 2010-12, the authors of modules relying on the hack | |
1700 | * are aware of the issue, because the modules failed on | |
1701 | * perls 5.13.{1..7} which had late setting of $@ without this | |
1702 | * early-setting hack. | |
1703 | */ | |
1704 | if (!(in_eval & EVAL_KEEPERR)) { | |
1705 | SvTEMP_off(exceptsv); | |
1706 | sv_setsv(ERRSV, exceptsv); | |
1707 | } | |
1708 | ||
5a844595 GS |
1709 | while ((cxix = dopoptoeval(cxstack_ix)) < 0 |
1710 | && PL_curstackinfo->si_prev) | |
1711 | { | |
bac4b2ad | 1712 | dounwind(-1); |
d3acc0f7 | 1713 | POPSTACK; |
bac4b2ad | 1714 | } |
e336de0d | 1715 | |
a0d0e21e LW |
1716 | if (cxix >= 0) { |
1717 | I32 optype; | |
b6494f15 | 1718 | SV *namesv; |
35a4481c | 1719 | register PERL_CONTEXT *cx; |
901017d6 | 1720 | SV **newsp; |
8f89e5a9 Z |
1721 | COP *oldcop; |
1722 | JMPENV *restartjmpenv; | |
1723 | OP *restartop; | |
a0d0e21e LW |
1724 | |
1725 | if (cxix < cxstack_ix) | |
1726 | dounwind(cxix); | |
1727 | ||
3280af22 | 1728 | POPBLOCK(cx,PL_curpm); |
6b35e009 | 1729 | if (CxTYPE(cx) != CXt_EVAL) { |
7d0994e0 | 1730 | STRLEN msglen; |
96d9b9cd | 1731 | const char* message = SvPVx_const(exceptsv, msglen); |
10edeb5d | 1732 | PerlIO_write(Perl_error_log, (const char *)"panic: die ", 11); |
bf49b057 | 1733 | PerlIO_write(Perl_error_log, message, msglen); |
a0d0e21e LW |
1734 | my_exit(1); |
1735 | } | |
1736 | POPEVAL(cx); | |
b6494f15 | 1737 | namesv = cx->blk_eval.old_namesv; |
8f89e5a9 Z |
1738 | oldcop = cx->blk_oldcop; |
1739 | restartjmpenv = cx->blk_eval.cur_top_env; | |
1740 | restartop = cx->blk_eval.retop; | |
a0d0e21e LW |
1741 | |
1742 | if (gimme == G_SCALAR) | |
3280af22 NIS |
1743 | *++newsp = &PL_sv_undef; |
1744 | PL_stack_sp = newsp; | |
a0d0e21e LW |
1745 | |
1746 | LEAVE; | |
748a9306 | 1747 | |
7fb6a879 GS |
1748 | /* LEAVE could clobber PL_curcop (see save_re_context()) |
1749 | * XXX it might be better to find a way to avoid messing with | |
1750 | * PL_curcop in save_re_context() instead, but this is a more | |
1751 | * minimal fix --GSAR */ | |
8f89e5a9 | 1752 | PL_curcop = oldcop; |
7fb6a879 | 1753 | |
7a2e2cd6 | 1754 | if (optype == OP_REQUIRE) { |
b6494f15 | 1755 | (void)hv_store(GvHVn(PL_incgv), |
ecad31f0 | 1756 | SvPVX_const(namesv), |
c60dbbc3 | 1757 | SvUTF8(namesv) ? -(I32)SvCUR(namesv) : (I32)SvCUR(namesv), |
27bcc0a7 | 1758 | &PL_sv_undef, 0); |
27e90453 DM |
1759 | /* note that unlike pp_entereval, pp_require isn't |
1760 | * supposed to trap errors. So now that we've popped the | |
1761 | * EVAL that pp_require pushed, and processed the error | |
1762 | * message, rethrow the error */ | |
ecad31f0 BF |
1763 | Perl_croak(aTHX_ "%"SVf"Compilation failed in require", |
1764 | SVfARG(exceptsv ? exceptsv : newSVpvs_flags("Unknown error\n", | |
1765 | SVs_TEMP))); | |
7a2e2cd6 | 1766 | } |
c5df3096 | 1767 | if (in_eval & EVAL_KEEPERR) { |
ecad31f0 BF |
1768 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), "\t(in cleanup) %"SVf, |
1769 | SVfARG(exceptsv)); | |
96d9b9cd Z |
1770 | } |
1771 | else { | |
1772 | sv_setsv(ERRSV, exceptsv); | |
1773 | } | |
8f89e5a9 Z |
1774 | PL_restartjmpenv = restartjmpenv; |
1775 | PL_restartop = restartop; | |
bb4c52e0 GG |
1776 | JMPENV_JUMP(3); |
1777 | /* NOTREACHED */ | |
a0d0e21e LW |
1778 | } |
1779 | } | |
87582a92 | 1780 | |
96d9b9cd | 1781 | write_to_stderr(exceptsv); |
f86702cc | 1782 | my_failure_exit(); |
1783 | /* NOTREACHED */ | |
a0d0e21e LW |
1784 | } |
1785 | ||
1786 | PP(pp_xor) | |
1787 | { | |
97aff369 | 1788 | dVAR; dSP; dPOPTOPssrl; |
a0d0e21e LW |
1789 | if (SvTRUE(left) != SvTRUE(right)) |
1790 | RETSETYES; | |
1791 | else | |
1792 | RETSETNO; | |
1793 | } | |
1794 | ||
8dff4fc5 BM |
1795 | /* |
1796 | =for apidoc caller_cx | |
1797 | ||
1798 | The XSUB-writer's equivalent of L<caller()|perlfunc/caller>. The | |
1799 | returned C<PERL_CONTEXT> structure can be interrogated to find all the | |
1800 | information returned to Perl by C<caller>. Note that XSUBs don't get a | |
1801 | stack frame, so C<caller_cx(0, NULL)> will return information for the | |
1802 | immediately-surrounding Perl code. | |
1803 | ||
1804 | This function skips over the automatic calls to C<&DB::sub> made on the | |
1805 | behalf of the debugger. If the stack frame requested was a sub called by | |
1806 | C<DB::sub>, the return value will be the frame for the call to | |
1807 | C<DB::sub>, since that has the correct line number/etc. for the call | |
1808 | site. If I<dbcxp> is non-C<NULL>, it will be set to a pointer to the | |
1809 | frame for the sub call itself. | |
1810 | ||
1811 | =cut | |
1812 | */ | |
1813 | ||
1814 | const PERL_CONTEXT * | |
1815 | Perl_caller_cx(pTHX_ I32 count, const PERL_CONTEXT **dbcxp) | |
a0d0e21e | 1816 | { |
a0d0e21e | 1817 | register I32 cxix = dopoptosub(cxstack_ix); |
901017d6 AL |
1818 | register const PERL_CONTEXT *cx; |
1819 | register const PERL_CONTEXT *ccstack = cxstack; | |
1820 | const PERL_SI *top_si = PL_curstackinfo; | |
27d41816 | 1821 | |
a0d0e21e | 1822 | for (;;) { |
2c375eb9 GS |
1823 | /* we may be in a higher stacklevel, so dig down deeper */ |
1824 | while (cxix < 0 && top_si->si_type != PERLSI_MAIN) { | |
1825 | top_si = top_si->si_prev; | |
1826 | ccstack = top_si->si_cxstack; | |
1827 | cxix = dopoptosub_at(ccstack, top_si->si_cxix); | |
1828 | } | |
8dff4fc5 BM |
1829 | if (cxix < 0) |
1830 | return NULL; | |
f2a7f298 DG |
1831 | /* caller() should not report the automatic calls to &DB::sub */ |
1832 | if (PL_DBsub && GvCV(PL_DBsub) && cxix >= 0 && | |
3280af22 | 1833 | ccstack[cxix].blk_sub.cv == GvCV(PL_DBsub)) |
a0d0e21e LW |
1834 | count++; |
1835 | if (!count--) | |
1836 | break; | |
2c375eb9 | 1837 | cxix = dopoptosub_at(ccstack, cxix - 1); |
a0d0e21e | 1838 | } |
2c375eb9 GS |
1839 | |
1840 | cx = &ccstack[cxix]; | |
8dff4fc5 BM |
1841 | if (dbcxp) *dbcxp = cx; |
1842 | ||
7766f137 | 1843 | if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) { |
f54cb97a | 1844 | const I32 dbcxix = dopoptosub_at(ccstack, cxix - 1); |
2c375eb9 | 1845 | /* We expect that ccstack[dbcxix] is CXt_SUB, anyway, the |
06a5b730 | 1846 | field below is defined for any cx. */ |
f2a7f298 DG |
1847 | /* caller() should not report the automatic calls to &DB::sub */ |
1848 | if (PL_DBsub && GvCV(PL_DBsub) && dbcxix >= 0 && ccstack[dbcxix].blk_sub.cv == GvCV(PL_DBsub)) | |
2c375eb9 | 1849 | cx = &ccstack[dbcxix]; |
06a5b730 | 1850 | } |
1851 | ||
8dff4fc5 BM |
1852 | return cx; |
1853 | } | |
1854 | ||
1855 | PP(pp_caller) | |
1856 | { | |
1857 | dVAR; | |
1858 | dSP; | |
1859 | register const PERL_CONTEXT *cx; | |
1860 | const PERL_CONTEXT *dbcx; | |
1861 | I32 gimme; | |
d527ce7c | 1862 | const HEK *stash_hek; |
8dff4fc5 | 1863 | I32 count = 0; |
ce0b554b | 1864 | bool has_arg = MAXARG && TOPs; |
8dff4fc5 | 1865 | |
ce0b554b FC |
1866 | if (MAXARG) { |
1867 | if (has_arg) | |
8dff4fc5 | 1868 | count = POPi; |
ce0b554b FC |
1869 | else (void)POPs; |
1870 | } | |
8dff4fc5 | 1871 | |
ce0b554b | 1872 | cx = caller_cx(count + !!(PL_op->op_private & OPpOFFBYONE), &dbcx); |
8dff4fc5 BM |
1873 | if (!cx) { |
1874 | if (GIMME != G_ARRAY) { | |
1875 | EXTEND(SP, 1); | |
1876 | RETPUSHUNDEF; | |
1877 | } | |
1878 | RETURN; | |
1879 | } | |
1880 | ||
d527ce7c | 1881 | stash_hek = HvNAME_HEK((HV*)CopSTASH(cx->blk_oldcop)); |
a0d0e21e | 1882 | if (GIMME != G_ARRAY) { |
27d41816 | 1883 | EXTEND(SP, 1); |
d527ce7c | 1884 | if (!stash_hek) |
3280af22 | 1885 | PUSHs(&PL_sv_undef); |
49d8d3a1 MB |
1886 | else { |
1887 | dTARGET; | |
d527ce7c | 1888 | sv_sethek(TARG, stash_hek); |
49d8d3a1 MB |
1889 | PUSHs(TARG); |
1890 | } | |
a0d0e21e LW |
1891 | RETURN; |
1892 | } | |
a0d0e21e | 1893 | |
b3ca2e83 | 1894 | EXTEND(SP, 11); |
27d41816 | 1895 | |
d527ce7c | 1896 | if (!stash_hek) |
3280af22 | 1897 | PUSHs(&PL_sv_undef); |
d527ce7c BF |
1898 | else { |
1899 | dTARGET; | |
1900 | sv_sethek(TARG, stash_hek); | |
1901 | PUSHTARG; | |
1902 | } | |
6e449a3a MHM |
1903 | mPUSHs(newSVpv(OutCopFILE(cx->blk_oldcop), 0)); |
1904 | mPUSHi((I32)CopLINE(cx->blk_oldcop)); | |
ce0b554b | 1905 | if (!has_arg) |
a0d0e21e | 1906 | RETURN; |
7766f137 | 1907 | if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) { |
8dff4fc5 | 1908 | GV * const cvgv = CvGV(dbcx->blk_sub.cv); |
7766f137 | 1909 | /* So is ccstack[dbcxix]. */ |
07b8c804 | 1910 | if (isGV(cvgv)) { |
561b68a9 | 1911 | SV * const sv = newSV(0); |
c445ea15 | 1912 | gv_efullname3(sv, cvgv, NULL); |
6e449a3a | 1913 | mPUSHs(sv); |
bf38a478 | 1914 | PUSHs(boolSV(CxHASARGS(cx))); |
07b8c804 RGS |
1915 | } |
1916 | else { | |
84bafc02 | 1917 | PUSHs(newSVpvs_flags("(unknown)", SVs_TEMP)); |
bf38a478 | 1918 | PUSHs(boolSV(CxHASARGS(cx))); |
07b8c804 | 1919 | } |
a0d0e21e LW |
1920 | } |
1921 | else { | |
84bafc02 | 1922 | PUSHs(newSVpvs_flags("(eval)", SVs_TEMP)); |
6e449a3a | 1923 | mPUSHi(0); |
a0d0e21e | 1924 | } |
54310121 | 1925 | gimme = (I32)cx->blk_gimme; |
1926 | if (gimme == G_VOID) | |
3280af22 | 1927 | PUSHs(&PL_sv_undef); |
54310121 | 1928 | else |
98625aca | 1929 | PUSHs(boolSV((gimme & G_WANT) == G_ARRAY)); |
6b35e009 | 1930 | if (CxTYPE(cx) == CXt_EVAL) { |
811a4de9 | 1931 | /* eval STRING */ |
85a64632 | 1932 | if (CxOLD_OP_TYPE(cx) == OP_ENTEREVAL) { |
4633a7c4 | 1933 | PUSHs(cx->blk_eval.cur_text); |
3280af22 | 1934 | PUSHs(&PL_sv_no); |
0f79a09d | 1935 | } |
811a4de9 | 1936 | /* require */ |
0f79a09d | 1937 | else if (cx->blk_eval.old_namesv) { |
6e449a3a | 1938 | mPUSHs(newSVsv(cx->blk_eval.old_namesv)); |
3280af22 | 1939 | PUSHs(&PL_sv_yes); |
06a5b730 | 1940 | } |
811a4de9 GS |
1941 | /* eval BLOCK (try blocks have old_namesv == 0) */ |
1942 | else { | |
1943 | PUSHs(&PL_sv_undef); | |
1944 | PUSHs(&PL_sv_undef); | |
1945 | } | |
4633a7c4 | 1946 | } |
a682de96 GS |
1947 | else { |
1948 | PUSHs(&PL_sv_undef); | |
1949 | PUSHs(&PL_sv_undef); | |
1950 | } | |
bafb2adc | 1951 | if (CxTYPE(cx) == CXt_SUB && CxHASARGS(cx) |
ed094faf | 1952 | && CopSTASH_eq(PL_curcop, PL_debstash)) |
4633a7c4 | 1953 | { |
66a1b24b AL |
1954 | AV * const ary = cx->blk_sub.argarray; |
1955 | const int off = AvARRAY(ary) - AvALLOC(ary); | |
a0d0e21e | 1956 | |
e1a80902 | 1957 | Perl_init_dbargs(aTHX); |
a0d0e21e | 1958 | |
3280af22 NIS |
1959 | if (AvMAX(PL_dbargs) < AvFILLp(ary) + off) |
1960 | av_extend(PL_dbargs, AvFILLp(ary) + off); | |
1961 | Copy(AvALLOC(ary), AvARRAY(PL_dbargs), AvFILLp(ary) + 1 + off, SV*); | |
1962 | AvFILLp(PL_dbargs) = AvFILLp(ary) + off; | |
a0d0e21e | 1963 | } |
f3aa04c2 GS |
1964 | /* XXX only hints propagated via op_private are currently |
1965 | * visible (others are not easily accessible, since they | |
1966 | * use the global PL_hints) */ | |
6e449a3a | 1967 | mPUSHi(CopHINTS_get(cx->blk_oldcop)); |
e476b1b5 GS |
1968 | { |
1969 | SV * mask ; | |
72dc9ed5 | 1970 | STRLEN * const old_warnings = cx->blk_oldcop->cop_warnings ; |
114bafba | 1971 | |
ac27b0f5 | 1972 | if (old_warnings == pWARN_NONE || |
114bafba | 1973 | (old_warnings == pWARN_STD && (PL_dowarn & G_WARN_ON) == 0)) |
e476b1b5 | 1974 | mask = newSVpvn(WARN_NONEstring, WARNsize) ; |
ac27b0f5 | 1975 | else if (old_warnings == pWARN_ALL || |
75b6c4ca RGS |
1976 | (old_warnings == pWARN_STD && PL_dowarn & G_WARN_ON)) { |
1977 | /* Get the bit mask for $warnings::Bits{all}, because | |
1978 | * it could have been extended by warnings::register */ | |
1979 | SV **bits_all; | |
6673a63c | 1980 | HV * const bits = get_hv("warnings::Bits", 0); |
017a3ce5 | 1981 | if (bits && (bits_all=hv_fetchs(bits, "all", FALSE))) { |
75b6c4ca RGS |
1982 | mask = newSVsv(*bits_all); |
1983 | } | |
1984 | else { | |
1985 | mask = newSVpvn(WARN_ALLstring, WARNsize) ; | |
1986 | } | |
1987 | } | |
e476b1b5 | 1988 | else |
72dc9ed5 | 1989 | mask = newSVpvn((char *) (old_warnings + 1), old_warnings[0]); |
6e449a3a | 1990 | mPUSHs(mask); |
e476b1b5 | 1991 | } |
b3ca2e83 | 1992 | |
c28fe1ec | 1993 | PUSHs(cx->blk_oldcop->cop_hints_hash ? |
20439bc7 | 1994 | sv_2mortal(newRV_noinc(MUTABLE_SV(cop_hints_2hv(cx->blk_oldcop, 0)))) |
b3ca2e83 | 1995 | : &PL_sv_undef); |
a0d0e21e LW |
1996 | RETURN; |
1997 | } | |
1998 | ||
a0d0e21e LW |
1999 | PP(pp_reset) |
2000 | { | |
97aff369 | 2001 | dVAR; |
39644a26 | 2002 | dSP; |
f650fa72 FC |
2003 | const char * const tmps = |
2004 | (MAXARG < 1 || (!TOPs && !POPs)) ? (const char *)"" : POPpconstx; | |
11faa288 | 2005 | sv_reset(tmps, CopSTASH(PL_curcop)); |
3280af22 | 2006 | PUSHs(&PL_sv_yes); |
a0d0e21e LW |
2007 | RETURN; |
2008 | } | |
2009 | ||
dd2155a4 DM |
2010 | /* like pp_nextstate, but used instead when the debugger is active */ |
2011 | ||
a0d0e21e LW |
2012 | PP(pp_dbstate) |
2013 | { | |
27da23d5 | 2014 | dVAR; |
533c011a | 2015 | PL_curcop = (COP*)PL_op; |
a0d0e21e | 2016 | TAINT_NOT; /* Each statement is presumed innocent */ |
3280af22 | 2017 | PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp; |
a0d0e21e LW |
2018 | FREETMPS; |
2019 | ||
f410a211 NC |
2020 | PERL_ASYNC_CHECK(); |
2021 | ||
5df8de69 DM |
2022 | if (PL_op->op_flags & OPf_SPECIAL /* breakpoint */ |
2023 | || SvIV(PL_DBsingle) || SvIV(PL_DBsignal) || SvIV(PL_DBtrace)) | |
a0d0e21e | 2024 | { |
39644a26 | 2025 | dSP; |
c09156bb | 2026 | register PERL_CONTEXT *cx; |
f54cb97a | 2027 | const I32 gimme = G_ARRAY; |
eb160463 | 2028 | U8 hasargs; |
0bd48802 AL |
2029 | GV * const gv = PL_DBgv; |
2030 | register CV * const cv = GvCV(gv); | |
a0d0e21e | 2031 | |
a0d0e21e | 2032 | if (!cv) |
cea2e8a9 | 2033 | DIE(aTHX_ "No DB::DB routine defined"); |
a0d0e21e | 2034 | |
aea4f609 DM |
2035 | if (CvDEPTH(cv) >= 1 && !(PL_debug & DEBUG_DB_RECURSE_FLAG)) |
2036 | /* don't do recursive DB::DB call */ | |
a0d0e21e | 2037 | return NORMAL; |
748a9306 | 2038 | |
a57c6685 | 2039 | ENTER; |
4633a7c4 LW |
2040 | SAVETMPS; |
2041 | ||
3280af22 | 2042 | SAVEI32(PL_debug); |
55497cff | 2043 | SAVESTACK_POS(); |
3280af22 | 2044 | PL_debug = 0; |
748a9306 | 2045 | hasargs = 0; |
924508f0 | 2046 | SPAGAIN; |
748a9306 | 2047 | |
aed2304a | 2048 | if (CvISXSUB(cv)) { |
c127bd3a SF |
2049 | CvDEPTH(cv)++; |
2050 | PUSHMARK(SP); | |
2051 | (void)(*CvXSUB(cv))(aTHX_ cv); | |
2052 | CvDEPTH(cv)--; | |
2053 | FREETMPS; | |
a57c6685 | 2054 | LEAVE; |
c127bd3a SF |
2055 | return NORMAL; |
2056 | } | |
2057 | else { | |
2058 | PUSHBLOCK(cx, CXt_SUB, SP); | |
2059 | PUSHSUB_DB(cx); | |
2060 | cx->blk_sub.retop = PL_op->op_next; | |
2061 | CvDEPTH(cv)++; | |
2062 | SAVECOMPPAD(); | |
2063 | PAD_SET_CUR_NOSAVE(CvPADLIST(cv), 1); | |
2064 | RETURNOP(CvSTART(cv)); | |
2065 | } | |
a0d0e21e LW |
2066 | } |
2067 | else | |
2068 | return NORMAL; | |
2069 | } | |
2070 | ||
b9d76716 VP |
2071 | STATIC SV ** |
2072 | S_adjust_stack_on_leave(pTHX_ SV **newsp, SV **sp, SV **mark, I32 gimme, U32 flags) | |
2073 | { | |
9a214eec | 2074 | bool padtmp = 0; |
b9d76716 VP |
2075 | PERL_ARGS_ASSERT_ADJUST_STACK_ON_LEAVE; |
2076 | ||
9a214eec DM |
2077 | if (flags & SVs_PADTMP) { |
2078 | flags &= ~SVs_PADTMP; | |
2079 | padtmp = 1; | |
2080 | } | |
b9d76716 VP |
2081 | if (gimme == G_SCALAR) { |
2082 | if (MARK < SP) | |
9a214eec DM |
2083 | *++newsp = ((SvFLAGS(*SP) & flags) || (padtmp && SvPADTMP(*SP))) |
2084 | ? *SP : sv_mortalcopy(*SP); | |
b9d76716 VP |
2085 | else { |
2086 | /* MEXTEND() only updates MARK, so reuse it instead of newsp. */ | |
2087 | MARK = newsp; | |
2088 | MEXTEND(MARK, 1); | |
2089 | *++MARK = &PL_sv_undef; | |
2090 | return MARK; | |
2091 | } | |
2092 | } | |
2093 | else if (gimme == G_ARRAY) { | |
2094 | /* in case LEAVE wipes old return values */ | |
2095 | while (++MARK <= SP) { | |
9a214eec | 2096 | if ((SvFLAGS(*MARK) & flags) || (padtmp && SvPADTMP(*MARK))) |
b9d76716 VP |
2097 | *++newsp = *MARK; |
2098 | else { | |
2099 | *++newsp = sv_mortalcopy(*MARK); | |
2100 | TAINT_NOT; /* Each item is independent */ | |
2101 | } | |
2102 | } | |
2103 | /* When this function was called with MARK == newsp, we reach this | |
2104 | * point with SP == newsp. */ | |
2105 | } | |
2106 | ||
2107 | return newsp; | |
2108 | } | |
2109 | ||
2b9a6457 VP |
2110 | PP(pp_enter) |
2111 | { | |
2112 | dVAR; dSP; | |
2113 | register PERL_CONTEXT *cx; | |
7c2d9d03 | 2114 | I32 gimme = GIMME_V; |
2b9a6457 VP |
2115 | |
2116 | ENTER_with_name("block"); | |
2117 | ||
2118 | SAVETMPS; | |
2119 | PUSHBLOCK(cx, CXt_BLOCK, SP); | |
2120 | ||
2121 | RETURN; | |
2122 | } | |
2123 | ||
2124 | PP(pp_leave) | |
2125 | { | |
2126 | dVAR; dSP; | |
2127 | register PERL_CONTEXT *cx; | |
2128 | SV **newsp; | |
2129 | PMOP *newpm; | |
2130 | I32 gimme; | |
2131 | ||
2132 | if (PL_op->op_flags & OPf_SPECIAL) { | |
2133 | cx = &cxstack[cxstack_ix]; | |
2134 | cx->blk_oldpm = PL_curpm; /* fake block should preserve $1 et al */ | |
2135 | } | |
2136 | ||
2137 | POPBLOCK(cx,newpm); | |
2138 | ||
2139 | gimme = OP_GIMME(PL_op, (cxstack_ix >= 0) ? gimme : G_SCALAR); | |
2140 | ||
2141 | TAINT_NOT; | |
f02ea43c | 2142 | SP = adjust_stack_on_leave(newsp, SP, newsp, gimme, SVs_PADTMP|SVs_TEMP); |
2b9a6457 VP |
2143 | PL_curpm = newpm; /* Don't pop $1 et al till now */ |
2144 | ||
2145 | LEAVE_with_name("block"); | |
2146 | ||
2147 | RETURN; | |
2148 | } | |
2149 | ||
a0d0e21e LW |
2150 | PP(pp_enteriter) |
2151 | { | |
27da23d5 | 2152 | dVAR; dSP; dMARK; |
c09156bb | 2153 | register PERL_CONTEXT *cx; |
f54cb97a | 2154 | const I32 gimme = GIMME_V; |
df530c37 | 2155 | void *itervar; /* location of the iteration variable */ |
840fe433 | 2156 | U8 cxtype = CXt_LOOP_FOR; |
a0d0e21e | 2157 | |
d343c3ef | 2158 | ENTER_with_name("loop1"); |
4633a7c4 LW |
2159 | SAVETMPS; |
2160 | ||
aafca525 DM |
2161 | if (PL_op->op_targ) { /* "my" variable */ |
2162 | if (PL_op->op_private & OPpLVAL_INTRO) { /* for my $x (...) */ | |
14f338dc DM |
2163 | SvPADSTALE_off(PAD_SVl(PL_op->op_targ)); |
2164 | SAVESETSVFLAGS(PAD_SVl(PL_op->op_targ), | |
2165 | SVs_PADSTALE, SVs_PADSTALE); | |
2166 | } | |
09edbca0 | 2167 | SAVEPADSVANDMORTALIZE(PL_op->op_targ); |
89e00a7c | 2168 | #ifdef USE_ITHREADS |
df530c37 | 2169 | itervar = PL_comppad; |
89e00a7c | 2170 | #else |
aafca525 | 2171 | itervar = &PAD_SVl(PL_op->op_targ); |
7766f137 | 2172 | #endif |
54b9620d | 2173 | } |
aafca525 | 2174 | else { /* symbol table variable */ |
159b6efe | 2175 | GV * const gv = MUTABLE_GV(POPs); |
f83b46a0 DM |
2176 | SV** svp = &GvSV(gv); |
2177 | save_pushptrptr(gv, SvREFCNT_inc(*svp), SAVEt_GVSV); | |
561b68a9 | 2178 | *svp = newSV(0); |
df530c37 | 2179 | itervar = (void *)gv; |
54b9620d | 2180 | } |
4633a7c4 | 2181 | |
0d863452 RH |
2182 | if (PL_op->op_private & OPpITER_DEF) |
2183 | cxtype |= CXp_FOR_DEF; | |
2184 | ||
d343c3ef | 2185 | ENTER_with_name("loop2"); |
a0d0e21e | 2186 | |
7766f137 | 2187 | PUSHBLOCK(cx, cxtype, SP); |
df530c37 | 2188 | PUSHLOOP_FOR(cx, itervar, MARK); |
533c011a | 2189 | if (PL_op->op_flags & OPf_STACKED) { |
d01136d6 BS |
2190 | SV *maybe_ary = POPs; |
2191 | if (SvTYPE(maybe_ary) != SVt_PVAV) { | |
89ea2908 | 2192 | dPOPss; |
d01136d6 | 2193 | SV * const right = maybe_ary; |
984a4bea RD |
2194 | SvGETMAGIC(sv); |
2195 | SvGETMAGIC(right); | |
4fe3f0fa | 2196 | if (RANGE_IS_NUMERIC(sv,right)) { |
d01136d6 | 2197 | cx->cx_type &= ~CXTYPEMASK; |
c6fdafd0 NC |
2198 | cx->cx_type |= CXt_LOOP_LAZYIV; |
2199 | /* Make sure that no-one re-orders cop.h and breaks our | |
2200 | assumptions */ | |
2201 | assert(CxTYPE(cx) == CXt_LOOP_LAZYIV); | |
a2309040 | 2202 | #ifdef NV_PRESERVES_UV |
f52e41ad FC |
2203 | if ((SvOK(sv) && ((SvNV_nomg(sv) < (NV)IV_MIN) || |
2204 | (SvNV_nomg(sv) > (NV)IV_MAX))) | |
a2309040 | 2205 | || |
f52e41ad FC |
2206 | (SvOK(right) && ((SvNV_nomg(right) > (NV)IV_MAX) || |
2207 | (SvNV_nomg(right) < (NV)IV_MIN)))) | |
a2309040 | 2208 | #else |
f52e41ad | 2209 | if ((SvOK(sv) && ((SvNV_nomg(sv) <= (NV)IV_MIN) |
a2309040 | 2210 | || |
f52e41ad FC |
2211 | ((SvNV_nomg(sv) > 0) && |
2212 | ((SvUV_nomg(sv) > (UV)IV_MAX) || | |
2213 | (SvNV_nomg(sv) > (NV)UV_MAX))))) | |
a2309040 | 2214 | || |
f52e41ad | 2215 | (SvOK(right) && ((SvNV_nomg(right) <= (NV)IV_MIN) |
a2309040 | 2216 | || |
f52e41ad FC |
2217 | ((SvNV_nomg(right) > 0) && |
2218 | ((SvUV_nomg(right) > (UV)IV_MAX) || | |
2219 | (SvNV_nomg(right) > (NV)UV_MAX)) | |
2220 | )))) | |
a2309040 | 2221 | #endif |
076d9a11 | 2222 | DIE(aTHX_ "Range iterator outside integer range"); |
f52e41ad FC |
2223 | cx->blk_loop.state_u.lazyiv.cur = SvIV_nomg(sv); |
2224 | cx->blk_loop.state_u.lazyiv.end = SvIV_nomg(right); | |
d4665a05 DM |
2225 | #ifdef DEBUGGING |
2226 | /* for correct -Dstv display */ | |
2227 | cx->blk_oldsp = sp - PL_stack_base; | |
2228 | #endif | |
89ea2908 | 2229 | } |
3f63a782 | 2230 | else { |
d01136d6 BS |
2231 | cx->cx_type &= ~CXTYPEMASK; |
2232 | cx->cx_type |= CXt_LOOP_LAZYSV; | |
2233 | /* Make sure that no-one re-orders cop.h and breaks our | |
2234 | assumptions */ | |
2235 | assert(CxTYPE(cx) == CXt_LOOP_LAZYSV); | |
2236 | cx->blk_loop.state_u.lazysv.cur = newSVsv(sv); | |
2237 | cx->blk_loop.state_u.lazysv.end = right; | |
2238 | SvREFCNT_inc(right); | |
2239 | (void) SvPV_force_nolen(cx->blk_loop.state_u.lazysv.cur); | |
267cc4a8 NC |
2240 | /* This will do the upgrade to SVt_PV, and warn if the value |
2241 | is uninitialised. */ | |
10516c54 | 2242 | (void) SvPV_nolen_const(right); |
267cc4a8 NC |
2243 | /* Doing this avoids a check every time in pp_iter in pp_hot.c |
2244 | to replace !SvOK() with a pointer to "". */ | |
2245 | if (!SvOK(right)) { | |
2246 | SvREFCNT_dec(right); | |
d01136d6 | 2247 | cx->blk_loop.state_u.lazysv.end = &PL_sv_no; |
267cc4a8 | 2248 | } |
3f63a782 | 2249 | } |
89ea2908 | 2250 | } |
d01136d6 | 2251 | else /* SvTYPE(maybe_ary) == SVt_PVAV */ { |
502c6561 | 2252 | cx->blk_loop.state_u.ary.ary = MUTABLE_AV(maybe_ary); |
d01136d6 BS |
2253 | SvREFCNT_inc(maybe_ary); |
2254 | cx->blk_loop.state_u.ary.ix = | |
2255 | (PL_op->op_private & OPpITER_REVERSED) ? | |
2256 | AvFILL(cx->blk_loop.state_u.ary.ary) + 1 : | |
2257 | -1; | |
ef3e5ea9 | 2258 | } |
89ea2908 | 2259 | } |
d01136d6 BS |
2260 | else { /* iterating over items on the stack */ |
2261 | cx->blk_loop.state_u.ary.ary = NULL; /* means to use the stack */ | |
ef3e5ea9 | 2262 | if (PL_op->op_private & OPpITER_REVERSED) { |
d01136d6 | 2263 | cx->blk_loop.state_u.ary.ix = cx->blk_oldsp + 1; |
ef3e5ea9 NC |
2264 | } |
2265 | else { | |
d01136d6 | 2266 | cx->blk_loop.state_u.ary.ix = MARK - PL_stack_base; |
ef3e5ea9 | 2267 | } |
4633a7c4 | 2268 | } |
a0d0e21e LW |
2269 | |
2270 | RETURN; | |
2271 | } | |
2272 | ||
2273 | PP(pp_enterloop) | |
2274 | { | |
27da23d5 | 2275 | dVAR; dSP; |
c09156bb | 2276 | register PERL_CONTEXT *cx; |
f54cb97a | 2277 | const I32 gimme = GIMME_V; |
a0d0e21e | 2278 | |
d343c3ef | 2279 | ENTER_with_name("loop1"); |
a0d0e21e | 2280 | SAVETMPS; |
d343c3ef | 2281 | ENTER_with_name("loop2"); |
a0d0e21e | 2282 | |
3b719c58 NC |
2283 | PUSHBLOCK(cx, CXt_LOOP_PLAIN, SP); |
2284 | PUSHLOOP_PLAIN(cx, SP); | |
a0d0e21e LW |
2285 | |
2286 | RETURN; | |
2287 | } | |
2288 | ||
2289 | PP(pp_leaveloop) | |
2290 | { | |
27da23d5 | 2291 | dVAR; dSP; |
c09156bb | 2292 | register PERL_CONTEXT *cx; |
a0d0e21e LW |
2293 | I32 gimme; |
2294 | SV **newsp; | |
2295 | PMOP *newpm; | |
2296 | SV **mark; | |
2297 | ||
2298 | POPBLOCK(cx,newpm); | |
3b719c58 | 2299 | assert(CxTYPE_is_LOOP(cx)); |
4fdae800 | 2300 | mark = newsp; |
a8bba7fa | 2301 | newsp = PL_stack_base + cx->blk_loop.resetsp; |
f86702cc | 2302 | |
a1f49e72 | 2303 | TAINT_NOT; |
b9d76716 | 2304 | SP = adjust_stack_on_leave(newsp, SP, MARK, gimme, 0); |
f86702cc | 2305 | PUTBACK; |
2306 | ||
a8bba7fa | 2307 | POPLOOP(cx); /* Stack values are safe: release loop vars ... */ |
3280af22 | 2308 | PL_curpm = newpm; /* ... and pop $1 et al */ |
f86702cc | 2309 | |
d343c3ef GG |
2310 | LEAVE_with_name("loop2"); |
2311 | LEAVE_with_name("loop1"); | |
a0d0e21e | 2312 | |
f86702cc | 2313 | return NORMAL; |
a0d0e21e LW |
2314 | } |
2315 | ||
3bdf583b FC |
2316 | STATIC void |
2317 | S_return_lvalues(pTHX_ SV **mark, SV **sp, SV **newsp, I32 gimme, | |
d25b0d7b | 2318 | PERL_CONTEXT *cx, PMOP *newpm) |
3bdf583b | 2319 | { |
80422e24 | 2320 | const bool ref = !!(CxLVAL(cx) & OPpENTERSUB_INARGS); |
3bdf583b | 2321 | if (gimme == G_SCALAR) { |
d25b0d7b FC |
2322 | if (CxLVAL(cx) && !ref) { /* Leave it as it is if we can. */ |
2323 | SV *sv; | |
001de122 | 2324 | const char *what = NULL; |
d25b0d7b FC |
2325 | if (MARK < SP) { |
2326 | assert(MARK+1 == SP); | |
2327 | if ((SvPADTMP(TOPs) || | |
2328 | (SvFLAGS(TOPs) & (SVf_READONLY | SVf_FAKE)) | |
2329 | == SVf_READONLY | |
2330 | ) && | |
2331 | !SvSMAGICAL(TOPs)) { | |
001de122 | 2332 | what = |
d25b0d7b | 2333 | SvREADONLY(TOPs) ? (TOPs == &PL_sv_undef) ? "undef" |
001de122 | 2334 | : "a readonly value" : "a temporary"; |
d25b0d7b | 2335 | } |
001de122 | 2336 | else goto copy_sv; |
d25b0d7b FC |
2337 | } |
2338 | else { | |
2339 | /* sub:lvalue{} will take us here. */ | |
001de122 | 2340 | what = "undef"; |
d25b0d7b | 2341 | } |
001de122 FC |
2342 | LEAVE; |
2343 | cxstack_ix--; | |
2344 | POPSUB(cx,sv); | |
2345 | PL_curpm = newpm; | |
2346 | LEAVESUB(sv); | |
2347 | Perl_croak(aTHX_ | |
2348 | "Can't return %s from lvalue subroutine", what | |
2349 | ); | |
d25b0d7b | 2350 | } |
93905212 | 2351 | if (MARK < SP) { |
a5ad7a5a | 2352 | copy_sv: |
3bdf583b FC |
2353 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
2354 | *++newsp = SvREFCNT_inc(*SP); | |
2355 | FREETMPS; | |
2356 | sv_2mortal(*newsp); | |
2357 | } | |
2358 | else | |
e08be60b | 2359 | *++newsp = |
e08be60b FC |
2360 | !SvTEMP(*SP) |
2361 | ? sv_2mortal(SvREFCNT_inc_simple_NN(*SP)) | |
2362 | : *SP; | |
3bdf583b | 2363 | } |
0d235c77 FC |
2364 | else { |
2365 | EXTEND(newsp,1); | |
3bdf583b | 2366 | *++newsp = &PL_sv_undef; |
0d235c77 | 2367 | } |
0e9700df | 2368 | if (CxLVAL(cx) & OPpDEREF) { |
767eda44 FC |
2369 | SvGETMAGIC(TOPs); |
2370 | if (!SvOK(TOPs)) { | |
0e9700df | 2371 | TOPs = vivify_ref(TOPs, CxLVAL(cx) & OPpDEREF); |
767eda44 FC |
2372 | } |
2373 | } | |
3bdf583b FC |
2374 | } |
2375 | else if (gimme == G_ARRAY) { | |
0e9700df | 2376 | assert (!(CxLVAL(cx) & OPpDEREF)); |
80422e24 | 2377 | if (ref || !CxLVAL(cx)) |
e08be60b FC |
2378 | while (++MARK <= SP) |
2379 | *++newsp = | |
2380 | SvTEMP(*MARK) | |
2381 | ? *MARK | |
80422e24 FC |
2382 | : ref && SvFLAGS(*MARK) & SVs_PADTMP |
2383 | ? sv_mortalcopy(*MARK) | |
2384 | : sv_2mortal(SvREFCNT_inc_simple_NN(*MARK)); | |
e08be60b | 2385 | else while (++MARK <= SP) { |
d25b0d7b FC |
2386 | if (*MARK != &PL_sv_undef |
2387 | && (SvPADTMP(*MARK) | |
2388 | || (SvFLAGS(*MARK) & (SVf_READONLY|SVf_FAKE)) | |
2389 | == SVf_READONLY | |
2390 | ) | |
2391 | ) { | |
2392 | SV *sv; | |
2393 | /* Might be flattened array after $#array = */ | |
2394 | PUTBACK; | |
2395 | LEAVE; | |
2396 | cxstack_ix--; | |
2397 | POPSUB(cx,sv); | |
2398 | PL_curpm = newpm; | |
2399 | LEAVESUB(sv); | |
ae917476 | 2400 | /* diag_listed_as: Can't return %s from lvalue subroutine */ |
d25b0d7b FC |
2401 | Perl_croak(aTHX_ |
2402 | "Can't return a %s from lvalue subroutine", | |
2403 | SvREADONLY(TOPs) ? "readonly value" : "temporary"); | |
2404 | } | |
2405 | else | |
4bee03f8 FC |
2406 | *++newsp = |
2407 | SvTEMP(*MARK) | |
2408 | ? *MARK | |
2409 | : sv_2mortal(SvREFCNT_inc_simple_NN(*MARK)); | |
3bdf583b FC |
2410 | } |
2411 | } | |
2412 | PL_stack_sp = newsp; | |
2413 | } | |
2414 | ||
a0d0e21e LW |
2415 | PP(pp_return) |
2416 | { | |
27da23d5 | 2417 | dVAR; dSP; dMARK; |
c09156bb | 2418 | register PERL_CONTEXT *cx; |
f86702cc | 2419 | bool popsub2 = FALSE; |
b45de488 | 2420 | bool clear_errsv = FALSE; |
fa1e92c4 | 2421 | bool lval = FALSE; |
a0d0e21e LW |
2422 | I32 gimme; |
2423 | SV **newsp; | |
2424 | PMOP *newpm; | |
2425 | I32 optype = 0; | |
b6494f15 | 2426 | SV *namesv; |
b0d9ce38 | 2427 | SV *sv; |
b263a1ad | 2428 | OP *retop = NULL; |
a0d0e21e | 2429 | |
0bd48802 AL |
2430 | const I32 cxix = dopoptosub(cxstack_ix); |
2431 | ||
9850bf21 RH |
2432 | if (cxix < 0) { |
2433 | if (CxMULTICALL(cxstack)) { /* In this case we must be in a | |
2434 | * sort block, which is a CXt_NULL | |
2435 | * not a CXt_SUB */ | |
2436 | dounwind(0); | |
d7507f74 RH |
2437 | PL_stack_base[1] = *PL_stack_sp; |
2438 | PL_stack_sp = PL_stack_base + 1; | |
a0d0e21e LW |
2439 | return 0; |
2440 | } | |
9850bf21 RH |
2441 | else |
2442 | DIE(aTHX_ "Can't return outside a subroutine"); | |
a0d0e21e | 2443 | } |
a0d0e21e LW |
2444 | if (cxix < cxstack_ix) |
2445 | dounwind(cxix); | |
2446 | ||
d7507f74 RH |
2447 | if (CxMULTICALL(&cxstack[cxix])) { |
2448 | gimme = cxstack[cxix].blk_gimme; | |
2449 | if (gimme == G_VOID) | |
2450 | PL_stack_sp = PL_stack_base; | |
2451 | else if (gimme == G_SCALAR) { | |
2452 | PL_stack_base[1] = *PL_stack_sp; | |
2453 | PL_stack_sp = PL_stack_base + 1; | |
2454 | } | |
9850bf21 | 2455 | return 0; |
d7507f74 | 2456 | } |
9850bf21 | 2457 | |
a0d0e21e | 2458 | POPBLOCK(cx,newpm); |
6b35e009 | 2459 | switch (CxTYPE(cx)) { |
a0d0e21e | 2460 | case CXt_SUB: |
f86702cc | 2461 | popsub2 = TRUE; |
fa1e92c4 | 2462 | lval = !!CvLVALUE(cx->blk_sub.cv); |
f39bc417 | 2463 | retop = cx->blk_sub.retop; |
5dd42e15 | 2464 | cxstack_ix++; /* preserve cx entry on stack for use by POPSUB */ |
a0d0e21e LW |
2465 | break; |
2466 | case CXt_EVAL: | |
b45de488 GS |
2467 | if (!(PL_in_eval & EVAL_KEEPERR)) |
2468 | clear_errsv = TRUE; | |
a0d0e21e | 2469 | POPEVAL(cx); |
b6494f15 | 2470 | namesv = cx->blk_eval.old_namesv; |
f39bc417 | 2471 | retop = cx->blk_eval.retop; |
1d76a5c3 GS |
2472 | if (CxTRYBLOCK(cx)) |
2473 | break; | |
748a9306 LW |
2474 | if (optype == OP_REQUIRE && |
2475 | (MARK == SP || (gimme == G_SCALAR && !SvTRUE(*SP))) ) | |
2476 | { | |
54310121 | 2477 | /* Unassume the success we assumed earlier. */ |
b6494f15 | 2478 | (void)hv_delete(GvHVn(PL_incgv), |
ecad31f0 | 2479 | SvPVX_const(namesv), |
c60dbbc3 | 2480 | SvUTF8(namesv) ? -(I32)SvCUR(namesv) : (I32)SvCUR(namesv), |
b6494f15 VP |
2481 | G_DISCARD); |
2482 | DIE(aTHX_ "%"SVf" did not return a true value", SVfARG(namesv)); | |
748a9306 | 2483 | } |
a0d0e21e | 2484 | break; |
7766f137 GS |
2485 | case CXt_FORMAT: |
2486 | POPFORMAT(cx); | |
f39bc417 | 2487 | retop = cx->blk_sub.retop; |
7766f137 | 2488 | break; |
a0d0e21e | 2489 | default: |
cea2e8a9 | 2490 | DIE(aTHX_ "panic: return"); |
a0d0e21e LW |
2491 | } |
2492 | ||
a1f49e72 | 2493 | TAINT_NOT; |
d25b0d7b | 2494 | if (lval) S_return_lvalues(aTHX_ MARK, SP, newsp, gimme, cx, newpm); |
3bdf583b FC |
2495 | else { |
2496 | if (gimme == G_SCALAR) { | |
a29cdaf0 IZ |
2497 | if (MARK < SP) { |
2498 | if (popsub2) { | |
a8bba7fa | 2499 | if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { |
6f48390a FC |
2500 | if (SvTEMP(TOPs) && SvREFCNT(TOPs) == 1 |
2501 | && !SvMAGICAL(TOPs)) { | |
a29cdaf0 IZ |
2502 | *++newsp = SvREFCNT_inc(*SP); |
2503 | FREETMPS; | |
2504 | sv_2mortal(*newsp); | |
959e3673 GS |
2505 | } |
2506 | else { | |
2507 | sv = SvREFCNT_inc(*SP); /* FREETMPS could clobber it */ | |
a29cdaf0 | 2508 | FREETMPS; |
959e3673 GS |
2509 | *++newsp = sv_mortalcopy(sv); |
2510 | SvREFCNT_dec(sv); | |
a29cdaf0 | 2511 | } |
959e3673 | 2512 | } |
6f48390a FC |
2513 | else if (SvTEMP(*SP) && SvREFCNT(*SP) == 1 |
2514 | && !SvMAGICAL(*SP)) { | |
767eda44 | 2515 | *++newsp = *SP; |
767eda44 | 2516 | } |
959e3673 | 2517 | else |
767eda44 | 2518 | *++newsp = sv_mortalcopy(*SP); |
959e3673 GS |
2519 | } |
2520 | else | |
a29cdaf0 | 2521 | *++newsp = sv_mortalcopy(*SP); |
959e3673 GS |
2522 | } |
2523 | else | |
3280af22 | 2524 | *++newsp = &PL_sv_undef; |
3bdf583b FC |
2525 | } |
2526 | else if (gimme == G_ARRAY) { | |
a1f49e72 | 2527 | while (++MARK <= SP) { |
3ed94dc0 | 2528 | *++newsp = popsub2 && SvTEMP(*MARK) && SvREFCNT(*MARK) == 1 |
6f48390a | 2529 | && !SvGMAGICAL(*MARK) |
f86702cc | 2530 | ? *MARK : sv_mortalcopy(*MARK); |
a1f49e72 CS |
2531 | TAINT_NOT; /* Each item is independent */ |
2532 | } | |
3bdf583b FC |
2533 | } |
2534 | PL_stack_sp = newsp; | |
a0d0e21e | 2535 | } |
a0d0e21e | 2536 | |
5dd42e15 | 2537 | LEAVE; |
f86702cc | 2538 | /* Stack values are safe: */ |
2539 | if (popsub2) { | |
5dd42e15 | 2540 | cxstack_ix--; |
b0d9ce38 | 2541 | POPSUB(cx,sv); /* release CV and @_ ... */ |
f86702cc | 2542 | } |
b0d9ce38 | 2543 | else |
c445ea15 | 2544 | sv = NULL; |
3280af22 | 2545 | PL_curpm = newpm; /* ... and pop $1 et al */ |
f86702cc | 2546 | |
b0d9ce38 | 2547 | LEAVESUB(sv); |
8433848b | 2548 | if (clear_errsv) { |
ab69dbc2 | 2549 | CLEAR_ERRSV(); |
8433848b | 2550 | } |
f39bc417 | 2551 | return retop; |
a0d0e21e LW |
2552 | } |
2553 | ||
4f443c3d FC |
2554 | /* This duplicates parts of pp_leavesub, so that it can share code with |
2555 | * pp_return */ | |
2556 | PP(pp_leavesublv) | |
2557 | { | |
2558 | dVAR; dSP; | |
4f443c3d FC |
2559 | SV **newsp; |
2560 | PMOP *newpm; | |
2561 | I32 gimme; | |
2562 | register PERL_CONTEXT *cx; | |
2563 | SV *sv; | |
2564 | ||
2565 | if (CxMULTICALL(&cxstack[cxstack_ix])) | |
2566 | return 0; | |
2567 | ||
2568 | POPBLOCK(cx,newpm); | |
2569 | cxstack_ix++; /* temporarily protect top context */ | |
4f443c3d FC |
2570 | |
2571 | TAINT_NOT; | |
2572 | ||
0d235c77 | 2573 | S_return_lvalues(aTHX_ newsp, SP, newsp, gimme, cx, newpm); |
4f443c3d FC |
2574 | |
2575 | LEAVE; | |
2576 | cxstack_ix--; | |
2577 | POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ | |
2578 | PL_curpm = newpm; /* ... and pop $1 et al */ | |
2579 | ||
2580 | LEAVESUB(sv); | |
2581 | return cx->blk_sub.retop; | |
2582 | } | |
2583 | ||
a0d0e21e LW |
2584 | PP(pp_last) |
2585 | { | |
27da23d5 | 2586 | dVAR; dSP; |
a0d0e21e | 2587 | I32 cxix; |
c09156bb | 2588 | register PERL_CONTEXT *cx; |
f86702cc | 2589 | I32 pop2 = 0; |
a0d0e21e | 2590 | I32 gimme; |
8772537c | 2591 | I32 optype; |
b263a1ad | 2592 | OP *nextop = NULL; |
a0d0e21e LW |
2593 | SV **newsp; |
2594 | PMOP *newpm; | |
a8bba7fa | 2595 | SV **mark; |
c445ea15 | 2596 | SV *sv = NULL; |
9d4ba2ae | 2597 | |
a0d0e21e | 2598 | |
533c011a | 2599 | if (PL_op->op_flags & OPf_SPECIAL) { |
a0d0e21e LW |
2600 | cxix = dopoptoloop(cxstack_ix); |
2601 | if (cxix < 0) | |
a651a37d | 2602 | DIE(aTHX_ "Can't \"last\" outside a loop block"); |
a0d0e21e LW |
2603 | } |
2604 | else { | |
2605 | cxix = dopoptolabel(cPVOP->op_pv); | |
2606 | if (cxix < 0) | |
cea2e8a9 | 2607 | DIE(aTHX_ "Label not found for \"last %s\"", cPVOP->op_pv); |
a0d0e21e LW |
2608 | } |
2609 | if (cxix < cxstack_ix) | |
2610 | dounwind(cxix); | |
2611 | ||
2612 | POPBLOCK(cx,newpm); | |
5dd42e15 | 2613 | cxstack_ix++; /* temporarily protect top context */ |
a8bba7fa | 2614 | mark = newsp; |
6b35e009 | 2615 | switch (CxTYPE(cx)) { |
c6fdafd0 | 2616 | case CXt_LOOP_LAZYIV: |
d01136d6 | 2617 | case CXt_LOOP_LAZYSV: |
3b719c58 NC |
2618 | case CXt_LOOP_FOR: |
2619 | case CXt_LOOP_PLAIN: | |
2620 | pop2 = CxTYPE(cx); | |
a8bba7fa | 2621 | newsp = PL_stack_base + cx->blk_loop.resetsp; |
022eaa24 | 2622 | nextop = cx->blk_loop.my_op->op_lastop->op_next; |
a0d0e21e | 2623 | break; |
f86702cc | 2624 | case CXt_SUB: |
f86702cc | 2625 | pop2 = CXt_SUB; |
f39bc417 | 2626 | nextop = cx->blk_sub.retop; |
a0d0e21e | 2627 | break; |
f86702cc | 2628 | case CXt_EVAL: |
2629 | POPEVAL(cx); | |
f39bc417 | 2630 | nextop = cx->blk_eval.retop; |
a0d0e21e | 2631 | break; |
7766f137 GS |
2632 | case CXt_FORMAT: |
2633 | POPFORMAT(cx); | |
f39bc417 | 2634 | nextop = cx->blk_sub.retop; |
7766f137 | 2635 | break; |
a0d0e21e | 2636 | default: |
cea2e8a9 | 2637 | DIE(aTHX_ "panic: last"); |
a0d0e21e LW |
2638 | } |
2639 | ||
a1f49e72 | 2640 | TAINT_NOT; |
b9d76716 VP |
2641 | SP = adjust_stack_on_leave(newsp, SP, MARK, gimme, |
2642 | pop2 == CXt_SUB ? SVs_TEMP : 0); | |
f86702cc | 2643 | PUTBACK; |
2644 | ||
5dd42e15 DM |
2645 | LEAVE; |
2646 | cxstack_ix--; | |
f86702cc | 2647 | /* Stack values are safe: */ |
2648 | switch (pop2) { | |
c6fdafd0 | 2649 | case CXt_LOOP_LAZYIV: |
3b719c58 | 2650 | case CXt_LOOP_PLAIN: |
d01136d6 | 2651 | case CXt_LOOP_LAZYSV: |
3b719c58 | 2652 | case CXt_LOOP_FOR: |
a8bba7fa | 2653 | POPLOOP(cx); /* release loop vars ... */ |
4fdae800 | 2654 | LEAVE; |
f86702cc | 2655 | break; |
2656 | case CXt_SUB: | |
b0d9ce38 | 2657 | POPSUB(cx,sv); /* release CV and @_ ... */ |
f86702cc | 2658 | break; |
a0d0e21e | 2659 | } |
3280af22 | 2660 | PL_curpm = newpm; /* ... and pop $1 et al */ |
a0d0e21e | 2661 | |
b0d9ce38 | 2662 | LEAVESUB(sv); |
9d4ba2ae AL |
2663 | PERL_UNUSED_VAR(optype); |
2664 | PERL_UNUSED_VAR(gimme); | |
f86702cc | 2665 | return nextop; |
a0d0e21e LW |
2666 | } |
2667 | ||
2668 | PP(pp_next) | |
2669 | { | |
27da23d5 | 2670 | dVAR; |
a0d0e21e | 2671 | I32 cxix; |
c09156bb | 2672 | register PERL_CONTEXT *cx; |
85538317 | 2673 | I32 inner; |
a0d0e21e | 2674 | |
533c011a | 2675 | if (PL_op->op_flags & OPf_SPECIAL) { |
a0d0e21e LW |
2676 | cxix = dopoptoloop(cxstack_ix); |
2677 | if (cxix < 0) | |
a651a37d | 2678 | DIE(aTHX_ "Can't \"next\" outside a loop block"); |
a0d0e21e LW |
2679 | } |
2680 | else { | |
2681 | cxix = dopoptolabel(cPVOP->op_pv); | |
2682 | if (cxix < 0) | |
cea2e8a9 | 2683 | DIE(aTHX_ "Label not found for \"next %s\"", cPVOP->op_pv); |
a0d0e21e LW |
2684 | } |
2685 | if (cxix < cxstack_ix) | |
2686 | dounwind(cxix); | |
2687 | ||
85538317 GS |
2688 | /* clear off anything above the scope we're re-entering, but |
2689 | * save the rest until after a possible continue block */ | |
2690 | inner = PL_scopestack_ix; | |
1ba6ee2b | 2691 | TOPBLOCK(cx); |
85538317 GS |
2692 | if (PL_scopestack_ix < inner) |
2693 | leave_scope(PL_scopestack[PL_scopestack_ix]); | |
3a1b2b9e | 2694 | PL_curcop = cx->blk_oldcop; |
d57ce4df | 2695 | return (cx)->blk_loop.my_op->op_nextop; |
a0d0e21e LW |
2696 | } |
2697 | ||
2698 | PP(pp_redo) | |
2699 | { | |
27da23d5 | 2700 | dVAR; |
a0d0e21e | 2701 | I32 cxix; |
c09156bb | 2702 | register PERL_CONTEXT *cx; |
a0d0e21e | 2703 | I32 oldsave; |
a034e688 | 2704 | OP* redo_op; |
a0d0e21e | 2705 | |
533c011a | 2706 | if (PL_op->op_flags & OPf_SPECIAL) { |
a0d0e21e LW |
2707 | cxix = dopoptoloop(cxstack_ix); |
2708 | if (cxix < 0) | |
a651a37d | 2709 | DIE(aTHX_ "Can't \"redo\" outside a loop block"); |
a0d0e21e LW |
2710 | } |
2711 | else { | |
2712 | cxix = dopoptolabel(cPVOP->op_pv); | |
2713 | if (cxix < 0) | |
cea2e8a9 | 2714 | DIE(aTHX_ "Label not found for \"redo %s\"", cPVOP->op_pv); |
a0d0e21e LW |
2715 | } |
2716 | if (cxix < cxstack_ix) | |
2717 | dounwind(cxix); | |
2718 | ||
022eaa24 | 2719 | redo_op = cxstack[cxix].blk_loop.my_op->op_redoop; |
a034e688 DM |
2720 | if (redo_op->op_type == OP_ENTER) { |
2721 | /* pop one less context to avoid $x being freed in while (my $x..) */ | |
2722 | cxstack_ix++; | |
2723 | assert(CxTYPE(&cxstack[cxstack_ix]) == CXt_BLOCK); | |
2724 | redo_op = redo_op->op_next; | |
2725 | } | |
2726 | ||
a0d0e21e | 2727 | TOPBLOCK(cx); |
3280af22 | 2728 | oldsave = PL_scopestack[PL_scopestack_ix - 1]; |
a0d0e21e | 2729 | LEAVE_SCOPE(oldsave); |
936c78b5 | 2730 | FREETMPS; |
3a1b2b9e | 2731 | PL_curcop = cx->blk_oldcop; |
a034e688 | 2732 | return redo_op; |
a0d0e21e LW |
2733 | } |
2734 | ||
0824fdcb | 2735 | STATIC OP * |
bfed75c6 | 2736 | S_dofindlabel(pTHX_ OP *o, const char *label, OP **opstack, OP **oplimit) |
a0d0e21e | 2737 | { |
97aff369 | 2738 | dVAR; |
a0d0e21e | 2739 | OP **ops = opstack; |
bfed75c6 | 2740 | static const char too_deep[] = "Target of goto is too deeply nested"; |
a0d0e21e | 2741 | |
7918f24d NC |
2742 | PERL_ARGS_ASSERT_DOFINDLABEL; |
2743 | ||
fc36a67e | 2744 | if (ops >= oplimit) |
cea2e8a9 | 2745 | Perl_croak(aTHX_ too_deep); |
11343788 MB |
2746 | if (o->op_type == OP_LEAVE || |
2747 | o->op_type == OP_SCOPE || | |
2748 | o->op_type == OP_LEAVELOOP || | |
33d34e4c | 2749 | o->op_type == OP_LEAVESUB || |
11343788 | 2750 | o->op_type == OP_LEAVETRY) |
fc36a67e | 2751 | { |
5dc0d613 | 2752 | *ops++ = cUNOPo->op_first; |
fc36a67e | 2753 | if (ops >= oplimit) |
cea2e8a9 | 2754 | Perl_croak(aTHX_ too_deep); |
fc36a67e | 2755 | } |
c4aa4e48 | 2756 | *ops = 0; |
11343788 | 2757 | if (o->op_flags & OPf_KIDS) { |
aec46f14 | 2758 | OP *kid; |
a0d0e21e | 2759 | /* First try all the kids at this level, since that's likeliest. */ |
11343788 | 2760 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) { |
7e8f1eac AD |
2761 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) { |
2762 | const char *kid_label = CopLABEL(kCOP); | |
2763 | if (kid_label && strEQ(kid_label, label)) | |
2764 | return kid; | |
2765 | } | |
a0d0e21e | 2766 | } |
11343788 | 2767 | for (kid = cUNOPo->op_first; kid; kid = kid->op_sibling) { |
3280af22 | 2768 | if (kid == PL_lastgotoprobe) |
a0d0e21e | 2769 | continue; |
ed8d0fe2 SM |
2770 | if (kid->op_type == OP_NEXTSTATE || kid->op_type == OP_DBSTATE) { |
2771 | if (ops == opstack) | |
2772 | *ops++ = kid; | |
2773 | else if (ops[-1]->op_type == OP_NEXTSTATE || | |
2774 | ops[-1]->op_type == OP_DBSTATE) | |
2775 | ops[-1] = kid; | |
2776 | else | |
2777 | *ops++ = kid; | |
2778 | } | |
155aba94 | 2779 | if ((o = dofindlabel(kid, label, ops, oplimit))) |
11343788 | 2780 | return o; |
a0d0e21e LW |
2781 | } |
2782 | } | |
c4aa4e48 | 2783 | *ops = 0; |
a0d0e21e LW |
2784 | return 0; |
2785 | } | |
2786 | ||
a0d0e21e LW |
2787 | PP(pp_goto) |
2788 | { | |
27da23d5 | 2789 | dVAR; dSP; |
cbbf8932 | 2790 | OP *retop = NULL; |
a0d0e21e | 2791 | I32 ix; |
c09156bb | 2792 | register PERL_CONTEXT *cx; |
fc36a67e | 2793 | #define GOTO_DEPTH 64 |
2794 | OP *enterops[GOTO_DEPTH]; | |
cbbf8932 | 2795 | const char *label = NULL; |
bfed75c6 AL |
2796 | const bool do_dump = (PL_op->op_type == OP_DUMP); |
2797 | static const char must_have_label[] = "goto must have label"; | |
a0d0e21e | 2798 | |
533c011a | 2799 | if (PL_op->op_flags & OPf_STACKED) { |
9d4ba2ae | 2800 | SV * const sv = POPs; |
a0d0e21e LW |
2801 | |
2802 | /* This egregious kludge implements goto &subroutine */ | |
2803 | if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVCV) { | |
2804 | I32 cxix; | |
c09156bb | 2805 | register PERL_CONTEXT *cx; |
ea726b52 | 2806 | CV *cv = MUTABLE_CV(SvRV(sv)); |
a0d0e21e LW |
2807 | SV** mark; |
2808 | I32 items = 0; | |
2809 | I32 oldsave; | |
b1464ded | 2810 | bool reified = 0; |
a0d0e21e | 2811 | |
e8f7dd13 | 2812 | retry: |
4aa0a1f7 | 2813 | if (!CvROOT(cv) && !CvXSUB(cv)) { |
7fc63493 | 2814 | const GV * const gv = CvGV(cv); |
e8f7dd13 | 2815 | if (gv) { |
7fc63493 | 2816 | GV *autogv; |
e8f7dd13 GS |
2817 | SV *tmpstr; |
2818 | /* autoloaded stub? */ | |
2819 | if (cv != GvCV(gv) && (cv = GvCV(gv))) | |
2820 | goto retry; | |
c271df94 BF |
2821 | autogv = gv_autoload_pvn(GvSTASH(gv), GvNAME(gv), |
2822 | GvNAMELEN(gv), | |
2823 | GvNAMEUTF8(gv) ? SVf_UTF8 : 0); | |
e8f7dd13 GS |
2824 | if (autogv && (cv = GvCV(autogv))) |
2825 | goto retry; | |
2826 | tmpstr = sv_newmortal(); | |
c445ea15 | 2827 | gv_efullname3(tmpstr, gv, NULL); |
be2597df | 2828 | DIE(aTHX_ "Goto undefined subroutine &%"SVf"", SVfARG(tmpstr)); |
4aa0a1f7 | 2829 | } |
cea2e8a9 | 2830 | DIE(aTHX_ "Goto undefined subroutine"); |
4aa0a1f7 AD |
2831 | } |
2832 | ||
a0d0e21e | 2833 | /* First do some returnish stuff. */ |
b37c2d43 | 2834 | SvREFCNT_inc_simple_void(cv); /* avoid premature free during unwind */ |
71fc2216 | 2835 | FREETMPS; |
a0d0e21e LW |
2836 | cxix = dopoptosub(cxstack_ix); |
2837 | if (cxix < 0) | |
cea2e8a9 | 2838 | DIE(aTHX_ "Can't goto subroutine outside a subroutine"); |
a0d0e21e LW |
2839 | if (cxix < cxstack_ix) |
2840 | dounwind(cxix); | |
2841 | TOPBLOCK(cx); | |
2d43a17f | 2842 | SPAGAIN; |
564abe23 | 2843 | /* ban goto in eval: see <20050521150056.GC20213@iabyn.com> */ |
2d43a17f | 2844 | if (CxTYPE(cx) == CXt_EVAL) { |
c74ace89 | 2845 | if (CxREALEVAL(cx)) |
00455a92 | 2846 | /* diag_listed_as: Can't goto subroutine from an eval-%s */ |
c74ace89 DM |
2847 | DIE(aTHX_ "Can't goto subroutine from an eval-string"); |
2848 | else | |
00455a92 | 2849 | /* diag_listed_as: Can't goto subroutine from an eval-%s */ |
c74ace89 | 2850 | DIE(aTHX_ "Can't goto subroutine from an eval-block"); |
2d43a17f | 2851 | } |
9850bf21 RH |
2852 | else if (CxMULTICALL(cx)) |
2853 | DIE(aTHX_ "Can't goto subroutine from a sort sub (or similar callback)"); | |
bafb2adc | 2854 | if (CxTYPE(cx) == CXt_SUB && CxHASARGS(cx)) { |
d8b46c1b | 2855 | /* put @_ back onto stack */ |
a0d0e21e | 2856 | AV* av = cx->blk_sub.argarray; |
bfed75c6 | 2857 | |
93965878 | 2858 | items = AvFILLp(av) + 1; |
a45cdc79 DM |
2859 | EXTEND(SP, items+1); /* @_ could have been extended. */ |
2860 | Copy(AvARRAY(av), SP + 1, items, SV*); | |
3280af22 NIS |
2861 | SvREFCNT_dec(GvAV(PL_defgv)); |
2862 | GvAV(PL_defgv) = cx->blk_sub.savearray; | |
b1464ded | 2863 | CLEAR_ARGARRAY(av); |
d8b46c1b | 2864 | /* abandon @_ if it got reified */ |
62b1ebc2 | 2865 | if (AvREAL(av)) { |
b1464ded DM |
2866 | reified = 1; |
2867 | SvREFCNT_dec(av); | |
d8b46c1b GS |
2868 | av = newAV(); |
2869 | av_extend(av, items-1); | |
11ca45c0 | 2870 | AvREIFY_only(av); |
ad64d0ec | 2871 | PAD_SVl(0) = MUTABLE_SV(cx->blk_sub.argarray = av); |
62b1ebc2 | 2872 | } |
a0d0e21e | 2873 | } |
aed2304a | 2874 | else if (CvISXSUB(cv)) { /* put GvAV(defgv) back onto stack */ |
890ce7af | 2875 | AV* const av = GvAV(PL_defgv); |
1fa4e549 | 2876 | items = AvFILLp(av) + 1; |
a45cdc79 DM |
2877 | EXTEND(SP, items+1); /* @_ could have been extended. */ |
2878 | Copy(AvARRAY(av), SP + 1, items, SV*); | |
1fa4e549 | 2879 | } |
a45cdc79 DM |
2880 | mark = SP; |
2881 | SP += items; | |
6b35e009 | 2882 | if (CxTYPE(cx) == CXt_SUB && |
b150fb22 | 2883 | !(CvDEPTH(cx->blk_sub.cv) = cx->blk_sub.olddepth)) |
a0d0e21e | 2884 | SvREFCNT_dec(cx->blk_sub.cv); |
3280af22 | 2885 | oldsave = PL_scopestack[PL_scopestack_ix - 1]; |
a0d0e21e LW |
2886 | LEAVE_SCOPE(oldsave); |
2887 | ||
1d59c038 FC |
2888 | /* A destructor called during LEAVE_SCOPE could have undefined |
2889 | * our precious cv. See bug #99850. */ | |
2890 | if (!CvROOT(cv) && !CvXSUB(cv)) { | |
2891 | const GV * const gv = CvGV(cv); | |
2892 | if (gv) { | |
2893 | SV * const tmpstr = sv_newmortal(); | |
2894 | gv_efullname3(tmpstr, gv, NULL); | |
2895 | DIE(aTHX_ "Goto undefined subroutine &%"SVf"", | |
2896 | SVfARG(tmpstr)); | |
2897 | } | |
2898 | DIE(aTHX_ "Goto undefined subroutine"); | |
2899 | } | |
2900 | ||
a0d0e21e LW |
2901 | /* Now do some callish stuff. */ |
2902 | SAVETMPS; | |
5023d17a | 2903 | SAVEFREESV(cv); /* later, undo the 'avoid premature free' hack */ |
aed2304a | 2904 | if (CvISXSUB(cv)) { |
b37c2d43 | 2905 | OP* const retop = cx->blk_sub.retop; |
9d63fa07 KW |
2906 | SV **newsp PERL_UNUSED_DECL; |
2907 | I32 gimme PERL_UNUSED_DECL; | |
b1464ded DM |
2908 | if (reified) { |
2909 | I32 index; | |
2910 | for (index=0; index<items; index++) | |
2911 | sv_2mortal(SP[-index]); | |
2912 | } | |
1fa4e549 | 2913 | |
b37c2d43 AL |
2914 | /* XS subs don't have a CxSUB, so pop it */ |
2915 | POPBLOCK(cx, PL_curpm); | |
2916 | /* Push a mark for the start of arglist */ | |
2917 | PUSHMARK(mark); | |
2918 | PUTBACK; | |
2919 | (void)(*CvXSUB(cv))(aTHX_ cv); | |
a57c6685 | 2920 | LEAVE; |
5eff7df7 | 2921 | return retop; |
a0d0e21e LW |
2922 | } |
2923 | else { | |
b37c2d43 | 2924 | AV* const padlist = CvPADLIST(cv); |
6b35e009 | 2925 | if (CxTYPE(cx) == CXt_EVAL) { |
85a64632 | 2926 | PL_in_eval = CxOLD_IN_EVAL(cx); |
3280af22 | 2927 | PL_eval_root = cx->blk_eval.old_eval_root; |
b150fb22 | 2928 | cx->cx_type = CXt_SUB; |
b150fb22 | 2929 | } |
a0d0e21e | 2930 | cx->blk_sub.cv = cv; |
1a5b3db4 | 2931 | cx->blk_sub.olddepth = CvDEPTH(cv); |
dd2155a4 | 2932 | |
a0d0e21e LW |
2933 | CvDEPTH(cv)++; |
2934 | if (CvDEPTH(cv) < 2) | |
74c765eb | 2935 | SvREFCNT_inc_simple_void_NN(cv); |
dd2155a4 | 2936 | else { |
2b9dff67 | 2937 | if (CvDEPTH(cv) == PERL_SUB_DEPTH_WARN && ckWARN(WARN_RECURSION)) |
44a8e56a | 2938 | sub_crush_depth(cv); |
26019298 | 2939 | pad_push(padlist, CvDEPTH(cv)); |
a0d0e21e | 2940 | } |
426a09cd | 2941 | PL_curcop = cx->blk_oldcop; |
fd617465 DM |
2942 | SAVECOMPPAD(); |
2943 | PAD_SET_CUR_NOSAVE(padlist, CvDEPTH(cv)); | |
bafb2adc | 2944 | if (CxHASARGS(cx)) |
6d4ff0d2 | 2945 | { |
502c6561 | 2946 | AV *const av = MUTABLE_AV(PAD_SVl(0)); |
a0d0e21e | 2947 | |
3280af22 | 2948 | cx->blk_sub.savearray = GvAV(PL_defgv); |
502c6561 | 2949 | GvAV(PL_defgv) = MUTABLE_AV(SvREFCNT_inc_simple(av)); |
dd2155a4 | 2950 | CX_CURPAD_SAVE(cx->blk_sub); |
6d4ff0d2 | 2951 | cx->blk_sub.argarray = av; |
a0d0e21e LW |
2952 | |
2953 | if (items >= AvMAX(av) + 1) { | |
b37c2d43 | 2954 | SV **ary = AvALLOC(av); |
a0d0e21e LW |
2955 | if (AvARRAY(av) != ary) { |
2956 | AvMAX(av) += AvARRAY(av) - AvALLOC(av); | |
9c6bc640 | 2957 | AvARRAY(av) = ary; |
a0d0e21e LW |
2958 | } |
2959 | if (items >= AvMAX(av) + 1) { | |
2960 | AvMAX(av) = items - 1; | |
2961 | Renew(ary,items+1,SV*); | |
2962 | AvALLOC(av) = ary; | |
9c6bc640 | 2963 | AvARRAY(av) = ary; |
a0d0e21e LW |
2964 | } |
2965 | } | |
a45cdc79 | 2966 | ++mark; |
a0d0e21e | 2967 | Copy(mark,AvARRAY(av),items,SV*); |
93965878 | 2968 | AvFILLp(av) = items - 1; |
d8b46c1b | 2969 | assert(!AvREAL(av)); |
b1464ded DM |
2970 | if (reified) { |
2971 | /* transfer 'ownership' of refcnts to new @_ */ | |
2972 | AvREAL_on(av); | |
2973 | AvREIFY_off(av); | |
2974 | } | |
a0d0e21e LW |
2975 | while (items--) { |
2976 | if (*mark) | |
2977 | SvTEMP_off(*mark); | |
2978 | mark++; | |
2979 | } | |
2980 | } | |
491527d0 | 2981 | if (PERLDB_SUB) { /* Checking curstash breaks DProf. */ |
005a8a35 | 2982 | Perl_get_db_sub(aTHX_ NULL, cv); |
b37c2d43 | 2983 | if (PERLDB_GOTO) { |
b96d8cd9 | 2984 | CV * const gotocv = get_cvs("DB::goto", 0); |
b37c2d43 AL |
2985 | if (gotocv) { |
2986 | PUSHMARK( PL_stack_sp ); | |
ad64d0ec | 2987 | call_sv(MUTABLE_SV(gotocv), G_SCALAR | G_NODEBUG); |
b37c2d43 AL |
2988 | PL_stack_sp--; |
2989 | } | |
491527d0 | 2990 | } |
1ce6579f | 2991 | } |
a0d0e21e LW |
2992 | RETURNOP(CvSTART(cv)); |
2993 | } | |
2994 | } | |
1614b0e3 | 2995 | else { |
0510663f | 2996 | label = SvPV_nolen_const(sv); |
1614b0e3 | 2997 | if (!(do_dump || *label)) |
cea2e8a9 | 2998 | DIE(aTHX_ must_have_label); |
1614b0e3 | 2999 | } |
a0d0e21e | 3000 | } |
533c011a | 3001 | else if (PL_op->op_flags & OPf_SPECIAL) { |
a0d0e21e | 3002 | if (! do_dump) |
cea2e8a9 | 3003 | DIE(aTHX_ must_have_label); |
a0d0e21e LW |
3004 | } |
3005 | else | |
3006 | label = cPVOP->op_pv; | |
3007 | ||
f410a211 NC |
3008 | PERL_ASYNC_CHECK(); |
3009 | ||
a0d0e21e | 3010 | if (label && *label) { |
cbbf8932 | 3011 | OP *gotoprobe = NULL; |
3b2447bc | 3012 | bool leaving_eval = FALSE; |
33d34e4c | 3013 | bool in_block = FALSE; |
cbbf8932 | 3014 | PERL_CONTEXT *last_eval_cx = NULL; |
a0d0e21e LW |
3015 | |
3016 | /* find label */ | |
3017 | ||
d4c19fe8 | 3018 | PL_lastgotoprobe = NULL; |
a0d0e21e LW |
3019 | *enterops = 0; |
3020 | for (ix = cxstack_ix; ix >= 0; ix--) { | |
3021 | cx = &cxstack[ix]; | |
6b35e009 | 3022 | switch (CxTYPE(cx)) { |
a0d0e21e | 3023 | case CXt_EVAL: |
3b2447bc | 3024 | leaving_eval = TRUE; |
971ecbe6 | 3025 | if (!CxTRYBLOCK(cx)) { |
a4f3a277 RH |
3026 | gotoprobe = (last_eval_cx ? |
3027 | last_eval_cx->blk_eval.old_eval_root : | |
3028 | PL_eval_root); | |
3029 | last_eval_cx = cx; | |
9c5794fe RH |
3030 | break; |
3031 | } | |
3032 | /* else fall through */ | |
c6fdafd0 | 3033 | case CXt_LOOP_LAZYIV: |
d01136d6 | 3034 | case CXt_LOOP_LAZYSV: |
3b719c58 NC |
3035 | case CXt_LOOP_FOR: |
3036 | case CXt_LOOP_PLAIN: | |
bb5aedc1 VP |
3037 | case CXt_GIVEN: |
3038 | case CXt_WHEN: | |
a0d0e21e LW |
3039 | gotoprobe = cx->blk_oldcop->op_sibling; |
3040 | break; | |
3041 | case CXt_SUBST: | |
3042 | continue; | |
3043 | case CXt_BLOCK: | |
33d34e4c | 3044 | if (ix) { |
a0d0e21e | 3045 | gotoprobe = cx->blk_oldcop->op_sibling; |
33d34e4c AE |
3046 | in_block = TRUE; |
3047 | } else | |
3280af22 | 3048 | gotoprobe = PL_main_root; |
a0d0e21e | 3049 | break; |
b3933176 | 3050 | case CXt_SUB: |
9850bf21 | 3051 | if (CvDEPTH(cx->blk_sub.cv) && !CxMULTICALL(cx)) { |
b3933176 CS |
3052 | gotoprobe = CvROOT(cx->blk_sub.cv); |
3053 | break; | |
3054 | } | |
3055 | /* FALL THROUGH */ | |
7766f137 | 3056 | case CXt_FORMAT: |
0a753a76 | 3057 | case CXt_NULL: |
a651a37d | 3058 | DIE(aTHX_ "Can't \"goto\" out of a pseudo block"); |
a0d0e21e LW |
3059 | default: |
3060 | if (ix) | |
cea2e8a9 | 3061 | DIE(aTHX_ "panic: goto"); |
3280af22 | 3062 | gotoprobe = PL_main_root; |
a0d0e21e LW |
3063 | break; |
3064 | } | |
2b597662 GS |
3065 | if (gotoprobe) { |
3066 | retop = dofindlabel(gotoprobe, label, | |
3067 | enterops, enterops + GOTO_DEPTH); | |
3068 | if (retop) | |
3069 | break; | |
eae48c89 Z |
3070 | if (gotoprobe->op_sibling && |
3071 | gotoprobe->op_sibling->op_type == OP_UNSTACK && | |
3072 | gotoprobe->op_sibling->op_sibling) { | |
3073 | retop = dofindlabel(gotoprobe->op_sibling->op_sibling, | |
3074 | label, enterops, enterops + GOTO_DEPTH); | |
3075 | if (retop) | |
3076 | break; | |
3077 | } | |
2b597662 | 3078 | } |
3280af22 | 3079 | PL_lastgotoprobe = gotoprobe; |
a0d0e21e LW |
3080 | } |
3081 | if (!retop) | |
cea2e8a9 | 3082 | DIE(aTHX_ "Can't find label %s", label); |
a0d0e21e | 3083 | |
3b2447bc RH |
3084 | /* if we're leaving an eval, check before we pop any frames |
3085 | that we're not going to punt, otherwise the error | |
3086 | won't be caught */ | |
3087 | ||
3088 | if (leaving_eval && *enterops && enterops[1]) { | |
3089 | I32 i; | |
3090 | for (i = 1; enterops[i]; i++) | |
3091 | if (enterops[i]->op_type == OP_ENTERITER) | |
3092 | DIE(aTHX_ "Can't \"goto\" into the middle of a foreach loop"); | |
3093 | } | |
3094 | ||
b500e03b GG |
3095 | if (*enterops && enterops[1]) { |
3096 | I32 i = enterops[1]->op_type == OP_ENTER && in_block ? 2 : 1; | |
3097 | if (enterops[i]) | |
3098 | deprecate("\"goto\" to jump into a construct"); | |
3099 | } | |
3100 | ||
a0d0e21e LW |
3101 | /* pop unwanted frames */ |
3102 | ||
3103 | if (ix < cxstack_ix) { | |
3104 | I32 oldsave; | |
3105 | ||
3106 | if (ix < 0) | |
3107 | ix = 0; | |
3108 | dounwind(ix); | |
3109 | TOPBLOCK(cx); | |
3280af22 | 3110 | oldsave = PL_scopestack[PL_scopestack_ix]; |
a0d0e21e LW |
3111 | LEAVE_SCOPE(oldsave); |
3112 | } | |
3113 | ||
3114 | /* push wanted frames */ | |
3115 | ||
748a9306 | 3116 | if (*enterops && enterops[1]) { |
0bd48802 | 3117 | OP * const oldop = PL_op; |
33d34e4c AE |
3118 | ix = enterops[1]->op_type == OP_ENTER && in_block ? 2 : 1; |
3119 | for (; enterops[ix]; ix++) { | |
533c011a | 3120 | PL_op = enterops[ix]; |
84902520 TB |
3121 | /* Eventually we may want to stack the needed arguments |
3122 | * for each op. For now, we punt on the hard ones. */ | |
533c011a | 3123 | if (PL_op->op_type == OP_ENTERITER) |
894356b3 | 3124 | DIE(aTHX_ "Can't \"goto\" into the middle of a foreach loop"); |
16c91539 | 3125 | PL_op->op_ppaddr(aTHX); |
a0d0e21e | 3126 | } |
533c011a | 3127 | PL_op = oldop; |
a0d0e21e LW |
3128 | } |
3129 | } | |
3130 | ||
3131 | if (do_dump) { | |
a5f75d66 | 3132 | #ifdef VMS |
6b88bc9c | 3133 | if (!retop) retop = PL_main_start; |
a5f75d66 | 3134 | #endif |
3280af22 NIS |
3135 | PL_restartop = retop; |
3136 | PL_do_undump = TRUE; | |
a0d0e21e LW |
3137 | |
3138 | my_unexec(); | |
3139 | ||
3280af22 NIS |
3140 | PL_restartop = 0; /* hmm, must be GNU unexec().. */ |
3141 | PL_do_undump = FALSE; | |
a0d0e21e LW |
3142 | } |
3143 | ||
3144 | RETURNOP(retop); | |
3145 | } | |
3146 | ||
3147 | PP(pp_exit) | |
3148 | { | |
97aff369 | 3149 | dVAR; |
39644a26 | 3150 | dSP; |
a0d0e21e LW |
3151 | I32 anum; |
3152 | ||
3153 | if (MAXARG < 1) | |
3154 | anum = 0; | |
9d3c658e FC |
3155 | else if (!TOPs) { |
3156 | anum = 0; (void)POPs; | |
3157 | } | |
ff0cee69 | 3158 | else { |
a0d0e21e | 3159 | anum = SvIVx(POPs); |
d98f61e7 GS |
3160 | #ifdef VMS |
3161 | if (anum == 1 && (PL_op->op_private & OPpEXIT_VMSISH)) | |
ff0cee69 | 3162 | anum = 0; |
96e176bf | 3163 | VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH); |
ff0cee69 | 3164 | #endif |
3165 | } | |
cc3604b1 | 3166 | PL_exit_flags |= PERL_EXIT_EXPECTED; |
81d86705 NC |
3167 | #ifdef PERL_MAD |
3168 | /* KLUDGE: disable exit 0 in BEGIN blocks when we're just compiling */ | |
3169 | if (anum || !(PL_minus_c && PL_madskills)) | |
3170 | my_exit(anum); | |
3171 | #else | |
a0d0e21e | 3172 | my_exit(anum); |
81d86705 | 3173 | #endif |
3280af22 | 3174 | PUSHs(&PL_sv_undef); |
a0d0e21e LW |
3175 | RETURN; |
3176 | } | |
3177 | ||
a0d0e21e LW |
3178 | /* Eval. */ |
3179 | ||
0824fdcb | 3180 | STATIC void |
cea2e8a9 | 3181 | S_save_lines(pTHX_ AV *array, SV *sv) |
a0d0e21e | 3182 | { |
504618e9 | 3183 | const char *s = SvPVX_const(sv); |
890ce7af | 3184 | const char * const send = SvPVX_const(sv) + SvCUR(sv); |
504618e9 | 3185 | I32 line = 1; |
a0d0e21e | 3186 | |
7918f24d NC |
3187 | PERL_ARGS_ASSERT_SAVE_LINES; |
3188 | ||
a0d0e21e | 3189 | while (s && s < send) { |
f54cb97a | 3190 | const char *t; |
b9f83d2f | 3191 | SV * const tmpstr = newSV_type(SVt_PVMG); |
a0d0e21e | 3192 | |
1d963ff3 | 3193 | t = (const char *)memchr(s, '\n', send - s); |
a0d0e21e LW |
3194 | if (t) |
3195 | t++; | |
3196 | else | |
3197 | t = send; | |
3198 | ||
3199 | sv_setpvn(tmpstr, s, t - s); | |
3200 | av_store(array, line++, tmpstr); | |
3201 | s = t; | |
3202 | } | |
3203 | } | |
3204 | ||
22f16304 RU |
3205 | /* |
3206 | =for apidoc docatch | |
3207 | ||
3208 | Check for the cases 0 or 3 of cur_env.je_ret, only used inside an eval context. | |
3209 | ||
3210 | 0 is used as continue inside eval, | |
3211 | ||
3212 | 3 is used for a die caught by an inner eval - continue inner loop | |
3213 | ||
3214 | See cop.h: je_mustcatch, when set at any runlevel to TRUE, means eval ops must | |
3215 | establish a local jmpenv to handle exception traps. | |
3216 | ||
3217 | =cut | |
3218 | */ | |
0824fdcb | 3219 | STATIC OP * |
cea2e8a9 | 3220 | S_docatch(pTHX_ OP *o) |
1e422769 | 3221 | { |
97aff369 | 3222 | dVAR; |
6224f72b | 3223 | int ret; |
06b5626a | 3224 | OP * const oldop = PL_op; |
db36c5a1 | 3225 | dJMPENV; |
1e422769 | 3226 | |
1e422769 | 3227 | #ifdef DEBUGGING |
54310121 | 3228 | assert(CATCH_GET == TRUE); |
1e422769 | 3229 | #endif |
312caa8e | 3230 | PL_op = o; |
8bffa5f8 | 3231 | |
14dd3ad8 | 3232 | JMPENV_PUSH(ret); |
6224f72b | 3233 | switch (ret) { |
312caa8e | 3234 | case 0: |
abd70938 DM |
3235 | assert(cxstack_ix >= 0); |
3236 | assert(CxTYPE(&cxstack[cxstack_ix]) == CXt_EVAL); | |
3237 | cxstack[cxstack_ix].blk_eval.cur_top_env = PL_top_env; | |
14dd3ad8 | 3238 | redo_body: |
85aaa934 | 3239 | CALLRUNOPS(aTHX); |
312caa8e CS |
3240 | break; |
3241 | case 3: | |
8bffa5f8 | 3242 | /* die caught by an inner eval - continue inner loop */ |
febb3a6d Z |
3243 | if (PL_restartop && PL_restartjmpenv == PL_top_env) { |
3244 | PL_restartjmpenv = NULL; | |
312caa8e CS |
3245 | PL_op = PL_restartop; |
3246 | PL_restartop = 0; | |
3247 | goto redo_body; | |
3248 | } | |
3249 | /* FALL THROUGH */ | |
3250 | default: | |
14dd3ad8 | 3251 | JMPENV_POP; |
533c011a | 3252 | PL_op = oldop; |
6224f72b | 3253 | JMPENV_JUMP(ret); |
1e422769 | 3254 | /* NOTREACHED */ |
1e422769 | 3255 | } |
14dd3ad8 | 3256 | JMPENV_POP; |
533c011a | 3257 | PL_op = oldop; |
5f66b61c | 3258 | return NULL; |
1e422769 | 3259 | } |
3260 | ||
ee23ad3b NC |
3261 | /* James Bond: Do you expect me to talk? |
3262 | Auric Goldfinger: No, Mr. Bond. I expect you to die. | |
3263 | ||
3264 | This code is an ugly hack, doesn't work with lexicals in subroutines that are | |
3265 | called more than once, and is only used by regcomp.c, for (?{}) blocks. | |
3266 | ||
3267 | Currently it is not used outside the core code. Best if it stays that way. | |
d59a8b3e NC |
3268 | |
3269 | Hence it's now deprecated, and will be removed. | |
ee23ad3b | 3270 | */ |
c277df42 | 3271 | OP * |
bfed75c6 | 3272 | Perl_sv_compile_2op(pTHX_ SV *sv, OP** startop, const char *code, PAD** padp) |
c277df42 IZ |
3273 | /* sv Text to convert to OP tree. */ |
3274 | /* startop op_free() this to undo. */ | |
3275 | /* code Short string id of the caller. */ | |
3276 | { | |
d59a8b3e NC |
3277 | PERL_ARGS_ASSERT_SV_COMPILE_2OP; |
3278 | return Perl_sv_compile_2op_is_broken(aTHX_ sv, startop, code, padp); | |
3279 | } | |
3280 | ||
3281 | /* Don't use this. It will go away without warning once the regexp engine is | |
3282 | refactored not to use it. */ | |
3283 | OP * | |
3284 | Perl_sv_compile_2op_is_broken(pTHX_ SV *sv, OP **startop, const char *code, | |
3285 | PAD **padp) | |
3286 | { | |
27da23d5 | 3287 | dVAR; dSP; /* Make POPBLOCK work. */ |
c277df42 IZ |
3288 | PERL_CONTEXT *cx; |
3289 | SV **newsp; | |
b094c71d | 3290 | I32 gimme = G_VOID; |
c277df42 IZ |
3291 | I32 optype; |
3292 | OP dummy; | |
83ee9e09 GS |
3293 | char tbuf[TYPE_DIGITS(long) + 12 + 10]; |
3294 | char *tmpbuf = tbuf; | |
c277df42 | 3295 | char *safestr; |
a3985cdc | 3296 | int runtime; |
601f1833 | 3297 | CV* runcv = NULL; /* initialise to avoid compiler warnings */ |
f7997f86 | 3298 | STRLEN len; |
634d6919 | 3299 | bool need_catch; |
c277df42 | 3300 | |
d59a8b3e | 3301 | PERL_ARGS_ASSERT_SV_COMPILE_2OP_IS_BROKEN; |
7918f24d | 3302 | |
d343c3ef | 3303 | ENTER_with_name("eval"); |
27fcb6ee | 3304 | lex_start(sv, NULL, LEX_START_SAME_FILTER); |
c277df42 IZ |
3305 | SAVETMPS; |
3306 | /* switch to eval mode */ | |
3307 | ||
923e4eb5 | 3308 | if (IN_PERL_COMPILETIME) { |
f4dd75d9 | 3309 | SAVECOPSTASH_FREE(&PL_compiling); |
11faa288 | 3310 | CopSTASH_set(&PL_compiling, PL_curstash); |
cbce877f | 3311 | } |
83ee9e09 | 3312 | if (PERLDB_NAMEEVAL && CopLINE(PL_curcop)) { |
9d4ba2ae | 3313 | SV * const sv = sv_newmortal(); |
83ee9e09 GS |
3314 | Perl_sv_setpvf(aTHX_ sv, "_<(%.10seval %lu)[%s:%"IVdf"]", |
3315 | code, (unsigned long)++PL_evalseq, | |
3316 | CopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); | |
3317 | tmpbuf = SvPVX(sv); | |
fc009855 | 3318 | len = SvCUR(sv); |
83ee9e09 GS |
3319 | } |
3320 | else | |
d9fad198 JH |
3321 | len = my_snprintf(tmpbuf, sizeof(tbuf), "_<(%.10s_eval %lu)", code, |
3322 | (unsigned long)++PL_evalseq); | |
f4dd75d9 | 3323 | SAVECOPFILE_FREE(&PL_compiling); |
57843af0 | 3324 | CopFILE_set(&PL_compiling, tmpbuf+2); |
f4dd75d9 | 3325 | SAVECOPLINE(&PL_compiling); |
57843af0 | 3326 | CopLINE_set(&PL_compiling, 1); |
c277df42 IZ |
3327 | /* XXX For C<eval "...">s within BEGIN {} blocks, this ends up |
3328 | deleting the eval's FILEGV from the stash before gv_check() runs | |
3329 | (i.e. before run-time proper). To work around the coredump that | |
3330 | ensues, we always turn GvMULTI_on for any globals that were | |
3331 | introduced within evals. See force_ident(). GSAR 96-10-12 */ | |
f7997f86 NC |
3332 | safestr = savepvn(tmpbuf, len); |
3333 | SAVEDELETE(PL_defstash, safestr, len); | |
b3ac6de7 | 3334 | SAVEHINTS(); |
d1ca3daa | 3335 | #ifdef OP_IN_REGISTER |
6b88bc9c | 3336 | PL_opsave = op; |
d1ca3daa | 3337 | #else |
7766f137 | 3338 | SAVEVPTR(PL_op); |
d1ca3daa | 3339 | #endif |
c277df42 | 3340 | |
a3985cdc | 3341 | /* we get here either during compilation, or via pp_regcomp at runtime */ |
923e4eb5 | 3342 | runtime = IN_PERL_RUNTIME; |
a3985cdc | 3343 | if (runtime) |
558b4424 | 3344 | { |
d819b83a | 3345 | runcv = find_runcv(NULL); |
a3985cdc | 3346 | |
558b4424 FC |
3347 | /* At run time, we have to fetch the hints from PL_curcop. */ |
3348 | PL_hints = PL_curcop->cop_hints; | |
3349 | if (PL_hints & HINT_LOCALIZE_HH) { | |
3350 | /* SAVEHINTS created a new HV in PL_hintgv, which we | |
3351 | need to GC */ | |
3352 | SvREFCNT_dec(GvHV(PL_hintgv)); | |
3353 | GvHV(PL_hintgv) = | |
3354 | refcounted_he_chain_2hv(PL_curcop->cop_hints_hash, 0); | |
3355 | hv_magic(GvHV(PL_hintgv), NULL, PERL_MAGIC_hints); | |
3356 | } | |
3357 | SAVECOMPILEWARNINGS(); | |
3358 | PL_compiling.cop_warnings = DUP_WARNINGS(PL_curcop->cop_warnings); | |
3359 | cophh_free(CopHINTHASH_get(&PL_compiling)); | |
3360 | /* XXX Does this need to avoid copying a label? */ | |
3361 | PL_compiling.cop_hints_hash | |
3362 | = cophh_copy(PL_curcop->cop_hints_hash); | |
3363 | } | |
3364 | ||
533c011a | 3365 | PL_op = &dummy; |
13b51b79 | 3366 | PL_op->op_type = OP_ENTEREVAL; |
533c011a | 3367 | PL_op->op_flags = 0; /* Avoid uninit warning. */ |
923e4eb5 | 3368 | PUSHBLOCK(cx, CXt_EVAL|(IN_PERL_COMPILETIME ? 0 : CXp_REAL), SP); |
6b75f042 | 3369 | PUSHEVAL(cx, 0); |
634d6919 GG |
3370 | need_catch = CATCH_GET; |
3371 | CATCH_SET(TRUE); | |
a3985cdc DM |
3372 | |
3373 | if (runtime) | |
f45b078d | 3374 | (void) doeval(G_SCALAR, startop, runcv, PL_curcop->cop_seq, NULL); |
a3985cdc | 3375 | else |
f45b078d | 3376 | (void) doeval(G_SCALAR, startop, PL_compcv, PL_cop_seqmax, NULL); |
634d6919 | 3377 | CATCH_SET(need_catch); |
13b51b79 | 3378 | POPBLOCK(cx,PL_curpm); |
e84b9f1f | 3379 | POPEVAL(cx); |
c277df42 IZ |
3380 | |
3381 | (*startop)->op_type = OP_NULL; | |
22c35a8c | 3382 | (*startop)->op_ppaddr = PL_ppaddr[OP_NULL]; |
f3548bdc | 3383 | /* XXX DAPM do this properly one year */ |
502c6561 | 3384 | *padp = MUTABLE_AV(SvREFCNT_inc_simple(PL_comppad)); |
d343c3ef | 3385 | LEAVE_with_name("eval"); |
923e4eb5 | 3386 | if (IN_PERL_COMPILETIME) |
623e6609 | 3387 | CopHINTS_set(&PL_compiling, PL_hints); |
d1ca3daa | 3388 | #ifdef OP_IN_REGISTER |
6b88bc9c | 3389 | op = PL_opsave; |
d1ca3daa | 3390 | #endif |
9d4ba2ae AL |
3391 | PERL_UNUSED_VAR(newsp); |
3392 | PERL_UNUSED_VAR(optype); | |
3393 | ||
410be5db | 3394 | return PL_eval_start; |
c277df42 IZ |
3395 | } |
3396 | ||
a3985cdc DM |
3397 | |
3398 | /* | |
3399 | =for apidoc find_runcv | |
3400 | ||
3401 | Locate the CV corresponding to the currently executing sub or eval. | |
d819b83a DM |
3402 | If db_seqp is non_null, skip CVs that are in the DB package and populate |
3403 | *db_seqp with the cop sequence number at the point that the DB:: code was | |
3404 | entered. (allows debuggers to eval in the scope of the breakpoint rather | |
cf525c36 | 3405 | than in the scope of the debugger itself). |
a3985cdc DM |
3406 | |
3407 | =cut | |
3408 | */ | |
3409 | ||
3410 | CV* | |
d819b83a | 3411 | Perl_find_runcv(pTHX_ U32 *db_seqp) |
a3985cdc | 3412 | { |
97aff369 | 3413 | dVAR; |
a3985cdc | 3414 | PERL_SI *si; |
a3985cdc | 3415 | |
d819b83a DM |
3416 | if (db_seqp) |
3417 | *db_seqp = PL_curcop->cop_seq; | |
a3985cdc | 3418 | for (si = PL_curstackinfo; si; si = si->si_prev) { |
06b5626a | 3419 | I32 ix; |
a3985cdc | 3420 | for (ix = si->si_cxix; ix >= 0; ix--) { |
06b5626a | 3421 | const PERL_CONTEXT *cx = &(si->si_cxstack[ix]); |
d819b83a | 3422 | if (CxTYPE(cx) == CXt_SUB || CxTYPE(cx) == CXt_FORMAT) { |
1b6737cc | 3423 | CV * const cv = cx->blk_sub.cv; |
d819b83a DM |
3424 | /* skip DB:: code */ |
3425 | if (db_seqp && PL_debstash && CvSTASH(cv) == PL_debstash) { | |
3426 | *db_seqp = cx->blk_oldcop->cop_seq; | |
3427 | continue; | |
3428 | } | |
3429 | return cv; | |
3430 | } | |
a3985cdc | 3431 | else if (CxTYPE(cx) == CXt_EVAL && !CxTRYBLOCK(cx)) |
676a678a | 3432 | return cx->blk_eval.cv; |
a3985cdc DM |
3433 | } |
3434 | } | |
3435 | return PL_main_cv; | |
3436 | } | |
3437 | ||
3438 | ||
27e90453 DM |
3439 | /* Run yyparse() in a setjmp wrapper. Returns: |
3440 | * 0: yyparse() successful | |
3441 | * 1: yyparse() failed | |
3442 | * 3: yyparse() died | |